Annotation of src/usr.bin/mandoc/roff.c, Revision 1.259
1.259 ! schwarze 1: /* $OpenBSD: roff.c,v 1.258 2022/04/30 18:46:16 schwarze Exp $ */
1.1 schwarze 2: /*
1.253 schwarze 3: * Copyright (c) 2010-2015, 2017-2022 Ingo Schwarze <schwarze@openbsd.org>
1.139 schwarze 4: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.1 schwarze 5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
1.16 schwarze 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.1 schwarze 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.16 schwarze 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.1 schwarze 13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.244 schwarze 17: *
18: * Implementation of the roff(7) parser for mandoc(1).
1.1 schwarze 19: */
1.99 schwarze 20: #include <sys/types.h>
21:
1.1 schwarze 22: #include <assert.h>
1.3 schwarze 23: #include <ctype.h>
1.117 schwarze 24: #include <limits.h>
1.167 schwarze 25: #include <stddef.h>
26: #include <stdint.h>
1.51 schwarze 27: #include <stdio.h>
1.1 schwarze 28: #include <stdlib.h>
29: #include <string.h>
30:
1.74 schwarze 31: #include "mandoc_aux.h"
1.167 schwarze 32: #include "mandoc_ohash.h"
1.217 schwarze 33: #include "mandoc.h"
1.137 schwarze 34: #include "roff.h"
1.221 schwarze 35: #include "mandoc_parse.h"
1.98 daniel 36: #include "libmandoc.h"
1.138 schwarze 37: #include "roff_int.h"
1.218 schwarze 38: #include "tbl_parse.h"
1.219 schwarze 39: #include "eqn_parse.h"
1.2 schwarze 40:
1.227 schwarze 41: /*
42: * ASCII_ESC is used to signal from roff_getarg() to roff_expand()
43: * that an escape sequence resulted from copy-in processing and
44: * needs to be checked or interpolated. As it is used nowhere
45: * else, it is defined here rather than in a header file.
46: */
47: #define ASCII_ESC 27
48:
1.43 schwarze 49: /* Maximum number of string expansions per line, to break infinite loops. */
50: #define EXPAND_LIMIT 1000
51:
1.187 schwarze 52: /* Types of definitions of macros and strings. */
53: #define ROFFDEF_USER (1 << 1) /* User-defined. */
54: #define ROFFDEF_PRE (1 << 2) /* Predefined. */
55: #define ROFFDEF_REN (1 << 3) /* Renamed standard macro. */
56: #define ROFFDEF_STD (1 << 4) /* mdoc(7) or man(7) macro. */
57: #define ROFFDEF_ANY (ROFFDEF_USER | ROFFDEF_PRE | \
58: ROFFDEF_REN | ROFFDEF_STD)
1.197 schwarze 59: #define ROFFDEF_UNDEF (1 << 5) /* Completely undefined. */
1.187 schwarze 60:
1.138 schwarze 61: /* --- data types --------------------------------------------------------- */
62:
1.41 schwarze 63: /*
1.42 schwarze 64: * An incredibly-simple string buffer.
65: */
1.8 schwarze 66: struct roffstr {
1.42 schwarze 67: char *p; /* nil-terminated buffer */
68: size_t sz; /* saved strlen(p) */
69: };
70:
71: /*
72: * A key-value roffstr pair as part of a singly-linked list.
73: */
74: struct roffkv {
75: struct roffstr key;
76: struct roffstr val;
77: struct roffkv *next; /* next in list */
1.8 schwarze 78: };
79:
1.52 schwarze 80: /*
81: * A single number register as part of a singly-linked list.
82: */
83: struct roffreg {
84: struct roffstr key;
1.53 schwarze 85: int val;
1.199 schwarze 86: int step;
1.52 schwarze 87: struct roffreg *next;
88: };
89:
1.167 schwarze 90: /*
91: * Association of request and macro names with token IDs.
92: */
93: struct roffreq {
94: enum roff_tok tok;
95: char name[];
96: };
97:
1.211 schwarze 98: /*
99: * A macro processing context.
100: * More than one is needed when macro calls are nested.
101: */
102: struct mctx {
103: char **argv;
104: int argc;
105: int argsz;
106: };
107:
1.1 schwarze 108: struct roff {
1.168 schwarze 109: struct roff_man *man; /* mdoc or man parser */
1.1 schwarze 110: struct roffnode *last; /* leaf of stack */
1.211 schwarze 111: struct mctx *mstack; /* stack of macro contexts */
1.96 schwarze 112: int *rstack; /* stack of inverted `ie' values */
1.167 schwarze 113: struct ohash *reqtab; /* request lookup table */
1.52 schwarze 114: struct roffreg *regtab; /* number registers */
1.42 schwarze 115: struct roffkv *strtab; /* user-defined strings & macros */
1.178 schwarze 116: struct roffkv *rentab; /* renamed strings & macros */
1.42 schwarze 117: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
118: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.16 schwarze 119: const char *current_string; /* value of last called user macro */
1.27 schwarze 120: struct tbl_node *first_tbl; /* first table parsed */
121: struct tbl_node *last_tbl; /* last table parsed */
122: struct tbl_node *tbl; /* current table being parsed */
1.191 schwarze 123: struct eqn_node *last_eqn; /* equation parser */
124: struct eqn_node *eqn; /* active equation parser */
1.102 schwarze 125: int eqn_inline; /* current equation is inline */
1.96 schwarze 126: int options; /* parse options */
1.211 schwarze 127: int mstacksz; /* current size of mstack */
128: int mstackpos; /* position in mstack */
1.96 schwarze 129: int rstacksz; /* current size limit of rstack */
130: int rstackpos; /* position in rstack */
1.99 schwarze 131: int format; /* current file in mdoc or man format */
1.96 schwarze 132: char control; /* control character */
1.175 schwarze 133: char escape; /* escape character */
1.1 schwarze 134: };
135:
1.236 schwarze 136: /*
137: * A macro definition, condition, or ignored block.
138: */
1.1 schwarze 139: struct roffnode {
1.166 schwarze 140: enum roff_tok tok; /* type of node */
1.1 schwarze 141: struct roffnode *parent; /* up one in stack */
142: int line; /* parse line */
143: int col; /* parse col */
1.16 schwarze 144: char *name; /* node name, e.g. macro name */
1.236 schwarze 145: char *end; /* custom end macro of the block */
146: int endspan; /* scope to: 1=eol 2=next line -1=\} */
147: int rule; /* content is: 1=evaluated 0=skipped */
1.1 schwarze 148: };
149:
150: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.166 schwarze 151: enum roff_tok tok, /* tok of macro */ \
1.110 schwarze 152: struct buf *buf, /* input buffer */ \
1.1 schwarze 153: int ln, /* parse line */ \
1.2 schwarze 154: int ppos, /* original pos in buffer */ \
155: int pos, /* current pos in buffer */ \
156: int *offs /* reset offset of buffer data */
1.1 schwarze 157:
1.212 schwarze 158: typedef int (*roffproc)(ROFF_ARGS);
1.1 schwarze 159:
160: struct roffmac {
1.2 schwarze 161: roffproc proc; /* process new macro */
162: roffproc text; /* process as child text of macro */
163: roffproc sub; /* process as child of macro */
164: int flags;
165: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.1 schwarze 166: };
167:
1.37 schwarze 168: struct predef {
169: const char *name; /* predefined input name */
170: const char *str; /* replacement symbol */
171: };
172:
173: #define PREDEF(__name, __str) \
174: { (__name), (__str) },
175:
1.138 schwarze 176: /* --- function prototypes ------------------------------------------------ */
177:
1.212 schwarze 178: static int roffnode_cleanscope(struct roff *);
179: static int roffnode_pop(struct roff *);
1.166 schwarze 180: static void roffnode_push(struct roff *, enum roff_tok,
1.42 schwarze 181: const char *, int, int);
1.218 schwarze 182: static void roff_addtbl(struct roff_man *, int, struct tbl_node *);
1.212 schwarze 183: static int roff_als(ROFF_ARGS);
184: static int roff_block(ROFF_ARGS);
185: static int roff_block_text(ROFF_ARGS);
186: static int roff_block_sub(ROFF_ARGS);
1.236 schwarze 187: static int roff_break(ROFF_ARGS);
1.212 schwarze 188: static int roff_cblock(ROFF_ARGS);
189: static int roff_cc(ROFF_ARGS);
190: static int roff_ccond(struct roff *, int, int);
1.213 schwarze 191: static int roff_char(ROFF_ARGS);
1.212 schwarze 192: static int roff_cond(ROFF_ARGS);
1.247 schwarze 193: static int roff_cond_checkend(ROFF_ARGS);
1.212 schwarze 194: static int roff_cond_text(ROFF_ARGS);
195: static int roff_cond_sub(ROFF_ARGS);
196: static int roff_ds(ROFF_ARGS);
197: static int roff_ec(ROFF_ARGS);
198: static int roff_eo(ROFF_ARGS);
199: static int roff_eqndelim(struct roff *, struct buf *, int);
1.244 schwarze 200: static int roff_evalcond(struct roff *, int, char *, int *);
1.106 schwarze 201: static int roff_evalnum(struct roff *, int,
202: const char *, int *, int *, int);
203: static int roff_evalpar(struct roff *, int,
1.133 schwarze 204: const char *, int *, int *, int);
1.71 schwarze 205: static int roff_evalstrcond(const char *, int *);
1.227 schwarze 206: static int roff_expand(struct roff *, struct buf *,
207: int, int, char);
1.42 schwarze 208: static void roff_free1(struct roff *);
1.52 schwarze 209: static void roff_freereg(struct roffreg *);
1.42 schwarze 210: static void roff_freestr(struct roffkv *);
1.85 schwarze 211: static size_t roff_getname(struct roff *, char **, int, int);
1.133 schwarze 212: static int roff_getnum(const char *, int *, int *, int);
1.56 schwarze 213: static int roff_getop(const char *, int *, char *);
1.199 schwarze 214: static int roff_getregn(struct roff *,
215: const char *, size_t, char);
1.145 schwarze 216: static int roff_getregro(const struct roff *,
217: const char *name);
1.197 schwarze 218: static const char *roff_getstrn(struct roff *,
1.187 schwarze 219: const char *, size_t, int *);
1.143 schwarze 220: static int roff_hasregn(const struct roff *,
221: const char *, size_t);
1.212 schwarze 222: static int roff_insec(ROFF_ARGS);
223: static int roff_it(ROFF_ARGS);
224: static int roff_line_ignore(ROFF_ARGS);
1.137 schwarze 225: static void roff_man_alloc1(struct roff_man *);
226: static void roff_man_free1(struct roff_man *);
1.212 schwarze 227: static int roff_manyarg(ROFF_ARGS);
1.256 schwarze 228: static int roff_mc(ROFF_ARGS);
1.230 schwarze 229: static int roff_noarg(ROFF_ARGS);
1.212 schwarze 230: static int roff_nop(ROFF_ARGS);
231: static int roff_nr(ROFF_ARGS);
232: static int roff_onearg(ROFF_ARGS);
1.166 schwarze 233: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.87 schwarze 234: int, int);
1.259 ! schwarze 235: static int roff_parse_comment(struct roff *, struct buf *,
! 236: int, int, char);
1.212 schwarze 237: static int roff_parsetext(struct roff *, struct buf *,
1.177 schwarze 238: int, int *);
1.212 schwarze 239: static int roff_renamed(ROFF_ARGS);
1.258 schwarze 240: static int roff_req_or_macro(ROFF_ARGS);
1.212 schwarze 241: static int roff_return(ROFF_ARGS);
242: static int roff_rm(ROFF_ARGS);
243: static int roff_rn(ROFF_ARGS);
244: static int roff_rr(ROFF_ARGS);
1.198 schwarze 245: static void roff_setregn(struct roff *, const char *,
1.199 schwarze 246: size_t, int, char, int);
1.8 schwarze 247: static void roff_setstr(struct roff *,
1.16 schwarze 248: const char *, const char *, int);
1.80 schwarze 249: static void roff_setstrn(struct roffkv **, const char *,
1.42 schwarze 250: size_t, const char *, size_t, int);
1.212 schwarze 251: static int roff_shift(ROFF_ARGS);
252: static int roff_so(ROFF_ARGS);
253: static int roff_tr(ROFF_ARGS);
254: static int roff_Dd(ROFF_ARGS);
255: static int roff_TE(ROFF_ARGS);
256: static int roff_TS(ROFF_ARGS);
257: static int roff_EQ(ROFF_ARGS);
258: static int roff_EN(ROFF_ARGS);
259: static int roff_T_(ROFF_ARGS);
260: static int roff_unsupp(ROFF_ARGS);
261: static int roff_userdef(ROFF_ARGS);
1.1 schwarze 262:
1.138 schwarze 263: /* --- constant data ------------------------------------------------------ */
264:
1.133 schwarze 265: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
266: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
267:
1.166 schwarze 268: const char *__roff_name[MAN_MAX + 1] = {
1.230 schwarze 269: "br", "ce", "fi", "ft",
270: "ll", "mc", "nf",
271: "po", "rj", "sp",
1.184 schwarze 272: "ta", "ti", NULL,
1.166 schwarze 273: "ab", "ad", "af", "aln",
274: "als", "am", "am1", "ami",
275: "ami1", "as", "as1", "asciify",
276: "backtrace", "bd", "bleedat", "blm",
277: "box", "boxa", "bp", "BP",
278: "break", "breakchar", "brnl", "brp",
1.177 schwarze 279: "brpnl", "c2", "cc",
1.166 schwarze 280: "cf", "cflags", "ch", "char",
281: "chop", "class", "close", "CL",
282: "color", "composite", "continue", "cp",
283: "cropat", "cs", "cu", "da",
284: "dch", "Dd", "de", "de1",
285: "defcolor", "dei", "dei1", "device",
286: "devicem", "di", "do", "ds",
287: "ds1", "dwh", "dt", "ec",
288: "ecr", "ecs", "el", "em",
289: "EN", "eo", "EP", "EQ",
290: "errprint", "ev", "evc", "ex",
291: "fallback", "fam", "fc", "fchar",
292: "fcolor", "fdeferlig", "feature", "fkern",
293: "fl", "flig", "fp", "fps",
294: "fschar", "fspacewidth", "fspecial", "ftr",
295: "fzoom", "gcolor", "hc", "hcode",
296: "hidechar", "hla", "hlm", "hpf",
297: "hpfa", "hpfcode", "hw", "hy",
298: "hylang", "hylen", "hym", "hypp",
299: "hys", "ie", "if", "ig",
300: "index", "it", "itc", "IX",
301: "kern", "kernafter", "kernbefore", "kernpair",
302: "lc", "lc_ctype", "lds", "length",
303: "letadj", "lf", "lg", "lhang",
304: "linetabs", "lnr", "lnrf", "lpfx",
1.176 schwarze 305: "ls", "lsm", "lt",
1.166 schwarze 306: "mediasize", "minss", "mk", "mso",
307: "na", "ne", "nh", "nhychar",
308: "nm", "nn", "nop", "nr",
309: "nrf", "nroff", "ns", "nx",
310: "open", "opena", "os", "output",
311: "padj", "papersize", "pc", "pev",
312: "pi", "PI", "pl", "pm",
1.184 schwarze 313: "pn", "pnr", "ps",
1.166 schwarze 314: "psbb", "pshape", "pso", "ptr",
315: "pvs", "rchar", "rd", "recursionlimit",
1.181 schwarze 316: "return", "rfschar", "rhang",
1.166 schwarze 317: "rm", "rn", "rnn", "rr",
318: "rs", "rt", "schar", "sentchar",
319: "shc", "shift", "sizes", "so",
320: "spacewidth", "special", "spreadwarn", "ss",
321: "sty", "substring", "sv", "sy",
1.172 schwarze 322: "T&", "tc", "TE",
1.173 schwarze 323: "TH", "tkf", "tl",
1.166 schwarze 324: "tm", "tm1", "tmc", "tr",
325: "track", "transchar", "trf", "trimat",
326: "trin", "trnt", "troff", "TS",
327: "uf", "ul", "unformat", "unwatch",
328: "unwatchn", "vpt", "vs", "warn",
329: "warnscale", "watch", "watchlength", "watchn",
330: "wh", "while", "write", "writec",
331: "writem", "xflag", ".", NULL,
1.178 schwarze 332: NULL, "text",
1.166 schwarze 333: "Dd", "Dt", "Os", "Sh",
334: "Ss", "Pp", "D1", "Dl",
335: "Bd", "Ed", "Bl", "El",
336: "It", "Ad", "An", "Ap",
337: "Ar", "Cd", "Cm", "Dv",
338: "Er", "Ev", "Ex", "Fa",
339: "Fd", "Fl", "Fn", "Ft",
340: "Ic", "In", "Li", "Nd",
341: "Nm", "Op", "Ot", "Pa",
342: "Rv", "St", "Va", "Vt",
343: "Xr", "%A", "%B", "%D",
344: "%I", "%J", "%N", "%O",
345: "%P", "%R", "%T", "%V",
346: "Ac", "Ao", "Aq", "At",
347: "Bc", "Bf", "Bo", "Bq",
348: "Bsx", "Bx", "Db", "Dc",
349: "Do", "Dq", "Ec", "Ef",
350: "Em", "Eo", "Fx", "Ms",
351: "No", "Ns", "Nx", "Ox",
352: "Pc", "Pf", "Po", "Pq",
353: "Qc", "Ql", "Qo", "Qq",
354: "Re", "Rs", "Sc", "So",
355: "Sq", "Sm", "Sx", "Sy",
356: "Tn", "Ux", "Xc", "Xo",
357: "Fo", "Fc", "Oo", "Oc",
358: "Bk", "Ek", "Bt", "Hf",
359: "Fr", "Ud", "Lb", "Lp",
360: "Lk", "Mt", "Brq", "Bro",
361: "Brc", "%C", "Es", "En",
1.171 schwarze 362: "Dx", "%Q", "%U", "Ta",
1.241 schwarze 363: "Tg", NULL,
1.166 schwarze 364: "TH", "SH", "SS", "TP",
1.204 schwarze 365: "TQ",
1.166 schwarze 366: "LP", "PP", "P", "IP",
367: "HP", "SM", "SB", "BI",
368: "IB", "BR", "RB", "R",
369: "B", "I", "IR", "RI",
370: "RE", "RS", "DT", "UC",
1.169 schwarze 371: "PD", "AT", "in",
1.205 schwarze 372: "SY", "YS", "OP",
373: "EX", "EE", "UR",
1.189 bentley 374: "UE", "MT", "ME", NULL
1.166 schwarze 375: };
376: const char *const *roff_name = __roff_name;
377:
378: static struct roffmac roffs[TOKEN_NONE] = {
1.230 schwarze 379: { roff_noarg, NULL, NULL, 0 }, /* br */
1.177 schwarze 380: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.230 schwarze 381: { roff_noarg, NULL, NULL, 0 }, /* fi */
1.169 schwarze 382: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.170 schwarze 383: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.256 schwarze 384: { roff_mc, NULL, NULL, 0 }, /* mc */
1.230 schwarze 385: { roff_noarg, NULL, NULL, 0 }, /* nf */
1.184 schwarze 386: { roff_onearg, NULL, NULL, 0 }, /* po */
1.181 schwarze 387: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.171 schwarze 388: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.172 schwarze 389: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.173 schwarze 390: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.168 schwarze 391: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.167 schwarze 392: { roff_unsupp, NULL, NULL, 0 }, /* ab */
393: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
394: { roff_line_ignore, NULL, NULL, 0 }, /* af */
395: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.183 schwarze 396: { roff_als, NULL, NULL, 0 }, /* als */
1.167 schwarze 397: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
398: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
399: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
400: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
401: { roff_ds, NULL, NULL, 0 }, /* as */
402: { roff_ds, NULL, NULL, 0 }, /* as1 */
403: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
404: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
405: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
406: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
407: { roff_unsupp, NULL, NULL, 0 }, /* blm */
408: { roff_unsupp, NULL, NULL, 0 }, /* box */
409: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
410: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
411: { roff_unsupp, NULL, NULL, 0 }, /* BP */
1.236 schwarze 412: { roff_break, NULL, NULL, 0 }, /* break */
1.167 schwarze 413: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
414: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.230 schwarze 415: { roff_noarg, NULL, NULL, 0 }, /* brp */
1.167 schwarze 416: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
417: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
418: { roff_cc, NULL, NULL, 0 }, /* cc */
419: { roff_insec, NULL, NULL, 0 }, /* cf */
420: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
421: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
1.213 schwarze 422: { roff_char, NULL, NULL, 0 }, /* char */
1.167 schwarze 423: { roff_unsupp, NULL, NULL, 0 }, /* chop */
424: { roff_line_ignore, NULL, NULL, 0 }, /* class */
425: { roff_insec, NULL, NULL, 0 }, /* close */
426: { roff_unsupp, NULL, NULL, 0 }, /* CL */
427: { roff_line_ignore, NULL, NULL, 0 }, /* color */
428: { roff_unsupp, NULL, NULL, 0 }, /* composite */
429: { roff_unsupp, NULL, NULL, 0 }, /* continue */
430: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
431: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
432: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
433: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
434: { roff_unsupp, NULL, NULL, 0 }, /* da */
435: { roff_unsupp, NULL, NULL, 0 }, /* dch */
436: { roff_Dd, NULL, NULL, 0 }, /* Dd */
437: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
438: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
439: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
440: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
441: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
442: { roff_unsupp, NULL, NULL, 0 }, /* device */
443: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
444: { roff_unsupp, NULL, NULL, 0 }, /* di */
445: { roff_unsupp, NULL, NULL, 0 }, /* do */
446: { roff_ds, NULL, NULL, 0 }, /* ds */
447: { roff_ds, NULL, NULL, 0 }, /* ds1 */
448: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
449: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.175 schwarze 450: { roff_ec, NULL, NULL, 0 }, /* ec */
1.167 schwarze 451: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
452: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
453: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
454: { roff_unsupp, NULL, NULL, 0 }, /* em */
455: { roff_EN, NULL, NULL, 0 }, /* EN */
1.175 schwarze 456: { roff_eo, NULL, NULL, 0 }, /* eo */
1.167 schwarze 457: { roff_unsupp, NULL, NULL, 0 }, /* EP */
458: { roff_EQ, NULL, NULL, 0 }, /* EQ */
459: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
460: { roff_unsupp, NULL, NULL, 0 }, /* ev */
461: { roff_unsupp, NULL, NULL, 0 }, /* evc */
462: { roff_unsupp, NULL, NULL, 0 }, /* ex */
463: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
464: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
465: { roff_unsupp, NULL, NULL, 0 }, /* fc */
466: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
467: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
468: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
469: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
470: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
471: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
472: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
473: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
474: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
475: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
476: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
477: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
478: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
479: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
480: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
481: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
482: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
483: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
484: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
485: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
486: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
487: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
488: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
489: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
490: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
491: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
492: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
493: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
494: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
495: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
496: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
497: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
498: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
499: { roff_unsupp, NULL, NULL, 0 }, /* index */
500: { roff_it, NULL, NULL, 0 }, /* it */
501: { roff_unsupp, NULL, NULL, 0 }, /* itc */
502: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
503: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
504: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
505: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
506: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
507: { roff_unsupp, NULL, NULL, 0 }, /* lc */
508: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
509: { roff_unsupp, NULL, NULL, 0 }, /* lds */
510: { roff_unsupp, NULL, NULL, 0 }, /* length */
511: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
512: { roff_insec, NULL, NULL, 0 }, /* lf */
513: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
514: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
515: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
516: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
517: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
518: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
519: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
520: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
521: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
522: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
523: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
524: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
525: { roff_insec, NULL, NULL, 0 }, /* mso */
526: { roff_line_ignore, NULL, NULL, 0 }, /* na */
527: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
528: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
529: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
530: { roff_unsupp, NULL, NULL, 0 }, /* nm */
531: { roff_unsupp, NULL, NULL, 0 }, /* nn */
1.202 schwarze 532: { roff_nop, NULL, NULL, 0 }, /* nop */
1.167 schwarze 533: { roff_nr, NULL, NULL, 0 }, /* nr */
534: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
535: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
536: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
537: { roff_insec, NULL, NULL, 0 }, /* nx */
538: { roff_insec, NULL, NULL, 0 }, /* open */
539: { roff_insec, NULL, NULL, 0 }, /* opena */
540: { roff_line_ignore, NULL, NULL, 0 }, /* os */
541: { roff_unsupp, NULL, NULL, 0 }, /* output */
542: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
543: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
544: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
545: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
546: { roff_insec, NULL, NULL, 0 }, /* pi */
547: { roff_unsupp, NULL, NULL, 0 }, /* PI */
548: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
549: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
550: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
551: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
552: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
553: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
554: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
555: { roff_insec, NULL, NULL, 0 }, /* pso */
556: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
557: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
558: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
559: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
560: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
1.211 schwarze 561: { roff_return, NULL, NULL, 0 }, /* return */
1.167 schwarze 562: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
563: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
564: { roff_rm, NULL, NULL, 0 }, /* rm */
1.178 schwarze 565: { roff_rn, NULL, NULL, 0 }, /* rn */
1.167 schwarze 566: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
567: { roff_rr, NULL, NULL, 0 }, /* rr */
568: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
569: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
570: { roff_unsupp, NULL, NULL, 0 }, /* schar */
571: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
572: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
1.211 schwarze 573: { roff_shift, NULL, NULL, 0 }, /* shift */
1.167 schwarze 574: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
575: { roff_so, NULL, NULL, 0 }, /* so */
576: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
577: { roff_line_ignore, NULL, NULL, 0 }, /* special */
578: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
579: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
580: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
581: { roff_unsupp, NULL, NULL, 0 }, /* substring */
582: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
583: { roff_insec, NULL, NULL, 0 }, /* sy */
584: { roff_T_, NULL, NULL, 0 }, /* T& */
585: { roff_unsupp, NULL, NULL, 0 }, /* tc */
586: { roff_TE, NULL, NULL, 0 }, /* TE */
1.187 schwarze 587: { roff_Dd, NULL, NULL, 0 }, /* TH */
1.167 schwarze 588: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
589: { roff_unsupp, NULL, NULL, 0 }, /* tl */
590: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
591: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
592: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
593: { roff_tr, NULL, NULL, 0 }, /* tr */
594: { roff_line_ignore, NULL, NULL, 0 }, /* track */
595: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
596: { roff_insec, NULL, NULL, 0 }, /* trf */
597: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
598: { roff_unsupp, NULL, NULL, 0 }, /* trin */
599: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
600: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
601: { roff_TS, NULL, NULL, 0 }, /* TS */
602: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
603: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
604: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
605: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
606: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
607: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
608: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
609: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
610: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
611: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
612: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
613: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
614: { roff_unsupp, NULL, NULL, 0 }, /* wh */
1.212 schwarze 615: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /*while*/
1.167 schwarze 616: { roff_insec, NULL, NULL, 0 }, /* write */
617: { roff_insec, NULL, NULL, 0 }, /* writec */
618: { roff_insec, NULL, NULL, 0 }, /* writem */
619: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
620: { roff_cblock, NULL, NULL, 0 }, /* . */
1.178 schwarze 621: { roff_renamed, NULL, NULL, 0 },
1.167 schwarze 622: { roff_userdef, NULL, NULL, 0 }
1.1 schwarze 623: };
624:
1.37 schwarze 625: /* Array of injected predefined strings. */
626: #define PREDEFS_MAX 38
627: static const struct predef predefs[PREDEFS_MAX] = {
628: #include "predefs.in"
629: };
630:
1.177 schwarze 631: static int roffce_lines; /* number of input lines to center */
632: static struct roff_node *roffce_node; /* active request */
1.51 schwarze 633: static int roffit_lines; /* number of lines to delay */
634: static char *roffit_macro; /* nil-terminated macro line */
635:
1.80 schwarze 636:
1.138 schwarze 637: /* --- request table ------------------------------------------------------ */
638:
1.167 schwarze 639: struct ohash *
640: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.3 schwarze 641: {
1.167 schwarze 642: struct ohash *htab;
643: struct roffreq *req;
644: enum roff_tok tok;
645: size_t sz;
646: unsigned int slot;
1.3 schwarze 647:
1.167 schwarze 648: htab = mandoc_malloc(sizeof(*htab));
649: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.3 schwarze 650:
1.167 schwarze 651: for (tok = mintok; tok < maxtok; tok++) {
1.168 schwarze 652: if (roff_name[tok] == NULL)
653: continue;
1.167 schwarze 654: sz = strlen(roff_name[tok]);
655: req = mandoc_malloc(sizeof(*req) + sz + 1);
656: req->tok = tok;
657: memcpy(req->name, roff_name[tok], sz + 1);
658: slot = ohash_qlookup(htab, req->name);
659: ohash_insert(htab, slot, req);
1.3 schwarze 660: }
1.167 schwarze 661: return htab;
1.3 schwarze 662: }
663:
1.167 schwarze 664: void
665: roffhash_free(struct ohash *htab)
1.1 schwarze 666: {
1.167 schwarze 667: struct roffreq *req;
668: unsigned int slot;
1.1 schwarze 669:
1.167 schwarze 670: if (htab == NULL)
671: return;
672: for (req = ohash_first(htab, &slot); req != NULL;
673: req = ohash_next(htab, &slot))
674: free(req);
675: ohash_delete(htab);
676: free(htab);
677: }
678:
679: enum roff_tok
680: roffhash_find(struct ohash *htab, const char *name, size_t sz)
681: {
682: struct roffreq *req;
683: const char *end;
684:
685: if (sz) {
686: end = name + sz;
687: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
688: } else
689: req = ohash_find(htab, ohash_qlookup(htab, name));
690: return req == NULL ? TOKEN_NONE : req->tok;
1.1 schwarze 691: }
692:
1.138 schwarze 693: /* --- stack of request blocks -------------------------------------------- */
694:
1.1 schwarze 695: /*
696: * Pop the current node off of the stack of roff instructions currently
1.236 schwarze 697: * pending. Return 1 if it is a loop or 0 otherwise.
1.1 schwarze 698: */
1.212 schwarze 699: static int
1.1 schwarze 700: roffnode_pop(struct roff *r)
701: {
702: struct roffnode *p;
1.212 schwarze 703: int inloop;
1.1 schwarze 704:
1.80 schwarze 705: p = r->last;
1.212 schwarze 706: inloop = p->tok == ROFF_while;
707: r->last = p->parent;
1.16 schwarze 708: free(p->name);
709: free(p->end);
1.1 schwarze 710: free(p);
1.212 schwarze 711: return inloop;
1.1 schwarze 712: }
713:
714: /*
715: * Push a roff node onto the instruction stack. This must later be
716: * removed with roffnode_pop().
717: */
1.11 schwarze 718: static void
1.166 schwarze 719: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.16 schwarze 720: int line, int col)
1.1 schwarze 721: {
722: struct roffnode *p;
723:
1.11 schwarze 724: p = mandoc_calloc(1, sizeof(struct roffnode));
1.1 schwarze 725: p->tok = tok;
1.16 schwarze 726: if (name)
727: p->name = mandoc_strdup(name);
1.1 schwarze 728: p->parent = r->last;
729: p->line = line;
730: p->col = col;
1.71 schwarze 731: p->rule = p->parent ? p->parent->rule : 0;
1.1 schwarze 732:
733: r->last = p;
734: }
735:
1.138 schwarze 736: /* --- roff parser state data management ---------------------------------- */
737:
1.1 schwarze 738: static void
739: roff_free1(struct roff *r)
740: {
1.42 schwarze 741: int i;
1.27 schwarze 742:
1.218 schwarze 743: tbl_free(r->first_tbl);
1.27 schwarze 744: r->first_tbl = r->last_tbl = r->tbl = NULL;
1.1 schwarze 745:
1.219 schwarze 746: eqn_free(r->last_eqn);
1.191 schwarze 747: r->last_eqn = r->eqn = NULL;
1.32 schwarze 748:
1.211 schwarze 749: while (r->mstackpos >= 0)
750: roff_userret(r);
751:
1.1 schwarze 752: while (r->last)
753: roffnode_pop(r);
1.27 schwarze 754:
1.96 schwarze 755: free (r->rstack);
756: r->rstack = NULL;
757: r->rstacksz = 0;
758: r->rstackpos = -1;
759:
760: roff_freereg(r->regtab);
761: r->regtab = NULL;
762:
1.42 schwarze 763: roff_freestr(r->strtab);
1.178 schwarze 764: roff_freestr(r->rentab);
1.42 schwarze 765: roff_freestr(r->xmbtab);
1.178 schwarze 766: r->strtab = r->rentab = r->xmbtab = NULL;
1.42 schwarze 767:
768: if (r->xtab)
769: for (i = 0; i < 128; i++)
770: free(r->xtab[i].p);
771: free(r->xtab);
772: r->xtab = NULL;
1.1 schwarze 773: }
774:
775: void
776: roff_reset(struct roff *r)
777: {
778: roff_free1(r);
1.239 schwarze 779: r->options |= MPARSE_COMMENT;
1.99 schwarze 780: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.175 schwarze 781: r->control = '\0';
782: r->escape = '\\';
1.179 schwarze 783: roffce_lines = 0;
784: roffce_node = NULL;
785: roffit_lines = 0;
786: roffit_macro = NULL;
1.1 schwarze 787: }
788:
789: void
790: roff_free(struct roff *r)
791: {
1.238 schwarze 792: int i;
1.211 schwarze 793:
1.1 schwarze 794: roff_free1(r);
1.211 schwarze 795: for (i = 0; i < r->mstacksz; i++)
796: free(r->mstack[i].argv);
797: free(r->mstack);
1.167 schwarze 798: roffhash_free(r->reqtab);
1.1 schwarze 799: free(r);
800: }
801:
802: struct roff *
1.223 schwarze 803: roff_alloc(int options)
1.1 schwarze 804: {
805: struct roff *r;
806:
1.11 schwarze 807: r = mandoc_calloc(1, sizeof(struct roff));
1.200 schwarze 808: r->reqtab = roffhash_alloc(0, ROFF_RENAMED);
1.239 schwarze 809: r->options = options | MPARSE_COMMENT;
1.99 schwarze 810: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.211 schwarze 811: r->mstackpos = -1;
1.2 schwarze 812: r->rstackpos = -1;
1.175 schwarze 813: r->escape = '\\';
1.149 schwarze 814: return r;
1.137 schwarze 815: }
816:
1.138 schwarze 817: /* --- syntax tree state data management ---------------------------------- */
818:
1.137 schwarze 819: static void
820: roff_man_free1(struct roff_man *man)
821: {
1.228 schwarze 822: if (man->meta.first != NULL)
823: roff_node_delete(man, man->meta.first);
1.137 schwarze 824: free(man->meta.msec);
825: free(man->meta.vol);
826: free(man->meta.os);
827: free(man->meta.arch);
828: free(man->meta.title);
829: free(man->meta.name);
830: free(man->meta.date);
1.228 schwarze 831: free(man->meta.sodest);
1.137 schwarze 832: }
833:
1.229 schwarze 834: void
835: roff_state_reset(struct roff_man *man)
836: {
837: man->last = man->meta.first;
838: man->last_es = NULL;
839: man->flags = 0;
840: man->lastsec = man->lastnamed = SEC_NONE;
841: man->next = ROFF_NEXT_CHILD;
842: roff_setreg(man->roff, "nS", 0, '=');
843: }
844:
1.137 schwarze 845: static void
846: roff_man_alloc1(struct roff_man *man)
847: {
848: memset(&man->meta, 0, sizeof(man->meta));
1.228 schwarze 849: man->meta.first = mandoc_calloc(1, sizeof(*man->meta.first));
850: man->meta.first->type = ROFFT_ROOT;
851: man->meta.macroset = MACROSET_NONE;
1.229 schwarze 852: roff_state_reset(man);
1.137 schwarze 853: }
854:
855: void
856: roff_man_reset(struct roff_man *man)
857: {
858: roff_man_free1(man);
859: roff_man_alloc1(man);
860: }
861:
862: void
863: roff_man_free(struct roff_man *man)
864: {
865: roff_man_free1(man);
1.252 schwarze 866: free(man->os_r);
1.137 schwarze 867: free(man);
868: }
869:
870: struct roff_man *
1.223 schwarze 871: roff_man_alloc(struct roff *roff, const char *os_s, int quick)
1.137 schwarze 872: {
873: struct roff_man *man;
874:
875: man = mandoc_calloc(1, sizeof(*man));
876: man->roff = roff;
1.188 schwarze 877: man->os_s = os_s;
1.137 schwarze 878: man->quick = quick;
879: roff_man_alloc1(man);
1.168 schwarze 880: roff->man = man;
1.149 schwarze 881: return man;
1.1 schwarze 882: }
883:
1.138 schwarze 884: /* --- syntax tree handling ----------------------------------------------- */
885:
886: struct roff_node *
887: roff_node_alloc(struct roff_man *man, int line, int pos,
888: enum roff_type type, int tok)
889: {
890: struct roff_node *n;
891:
892: n = mandoc_calloc(1, sizeof(*n));
893: n->line = line;
894: n->pos = pos;
895: n->tok = tok;
896: n->type = type;
897: n->sec = man->lastsec;
898:
899: if (man->flags & MDOC_SYNOPSIS)
1.157 schwarze 900: n->flags |= NODE_SYNPRETTY;
1.138 schwarze 901: else
1.157 schwarze 902: n->flags &= ~NODE_SYNPRETTY;
1.232 schwarze 903: if ((man->flags & (ROFF_NOFILL | ROFF_NONOFILL)) == ROFF_NOFILL)
1.231 schwarze 904: n->flags |= NODE_NOFILL;
905: else
906: n->flags &= ~NODE_NOFILL;
1.138 schwarze 907: if (man->flags & MDOC_NEWLINE)
1.157 schwarze 908: n->flags |= NODE_LINE;
1.138 schwarze 909: man->flags &= ~MDOC_NEWLINE;
910:
1.149 schwarze 911: return n;
1.138 schwarze 912: }
913:
914: void
915: roff_node_append(struct roff_man *man, struct roff_node *n)
916: {
917:
918: switch (man->next) {
919: case ROFF_NEXT_SIBLING:
1.153 schwarze 920: if (man->last->next != NULL) {
921: n->next = man->last->next;
922: man->last->next->prev = n;
923: } else
924: man->last->parent->last = n;
1.138 schwarze 925: man->last->next = n;
926: n->prev = man->last;
927: n->parent = man->last->parent;
928: break;
929: case ROFF_NEXT_CHILD:
1.159 schwarze 930: if (man->last->child != NULL) {
931: n->next = man->last->child;
932: man->last->child->prev = n;
933: } else
934: man->last->last = n;
1.138 schwarze 935: man->last->child = n;
936: n->parent = man->last;
937: break;
938: default:
939: abort();
940: }
1.154 schwarze 941: man->last = n;
1.138 schwarze 942:
943: switch (n->type) {
944: case ROFFT_HEAD:
945: n->parent->head = n;
946: break;
947: case ROFFT_BODY:
1.154 schwarze 948: if (n->end != ENDBODY_NOT)
949: return;
1.138 schwarze 950: n->parent->body = n;
951: break;
952: case ROFFT_TAIL:
953: n->parent->tail = n;
954: break;
955: default:
1.154 schwarze 956: return;
1.138 schwarze 957: }
1.154 schwarze 958:
959: /*
960: * Copy over the normalised-data pointer of our parent. Not
961: * everybody has one, but copying a null pointer is fine.
962: */
963:
964: n->norm = n->parent->norm;
965: assert(n->parent->type == ROFFT_BLOCK);
1.138 schwarze 966: }
967:
1.139 schwarze 968: void
969: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
970: {
971: struct roff_node *n;
972:
973: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
974: n->string = roff_strdup(man->roff, word);
975: roff_node_append(man, n);
1.158 schwarze 976: n->flags |= NODE_VALID | NODE_ENDED;
1.139 schwarze 977: man->next = ROFF_NEXT_SIBLING;
978: }
979:
980: void
981: roff_word_append(struct roff_man *man, const char *word)
982: {
983: struct roff_node *n;
984: char *addstr, *newstr;
985:
986: n = man->last;
987: addstr = roff_strdup(man->roff, word);
988: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
989: free(addstr);
990: free(n->string);
991: n->string = newstr;
992: man->next = ROFF_NEXT_SIBLING;
1.140 schwarze 993: }
994:
995: void
996: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
997: {
998: struct roff_node *n;
999:
1000: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
1001: roff_node_append(man, n);
1002: man->next = ROFF_NEXT_CHILD;
1003: }
1004:
1005: struct roff_node *
1006: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
1007: {
1008: struct roff_node *n;
1009:
1010: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
1011: roff_node_append(man, n);
1012: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 1013: return n;
1.139 schwarze 1014: }
1015:
1.138 schwarze 1016: struct roff_node *
1017: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
1018: {
1019: struct roff_node *n;
1020:
1021: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
1022: roff_node_append(man, n);
1023: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 1024: return n;
1.138 schwarze 1025: }
1026:
1027: struct roff_node *
1028: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1029: {
1030: struct roff_node *n;
1031:
1032: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1033: roff_node_append(man, n);
1034: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 1035: return n;
1.139 schwarze 1036: }
1037:
1.193 schwarze 1038: static void
1.218 schwarze 1039: roff_addtbl(struct roff_man *man, int line, struct tbl_node *tbl)
1.139 schwarze 1040: {
1041: struct roff_node *n;
1.218 schwarze 1042: struct tbl_span *span;
1.139 schwarze 1043:
1.228 schwarze 1044: if (man->meta.macroset == MACROSET_MAN)
1.174 schwarze 1045: man_breakscope(man, ROFF_TS);
1.193 schwarze 1046: while ((span = tbl_span(tbl)) != NULL) {
1.218 schwarze 1047: n = roff_node_alloc(man, line, 0, ROFFT_TBL, TOKEN_NONE);
1.193 schwarze 1048: n->span = span;
1049: roff_node_append(man, n);
1050: n->flags |= NODE_VALID | NODE_ENDED;
1051: man->next = ROFF_NEXT_SIBLING;
1052: }
1.138 schwarze 1053: }
1054:
1055: void
1056: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1057: {
1058:
1059: /* Adjust siblings. */
1060:
1061: if (n->prev)
1062: n->prev->next = n->next;
1063: if (n->next)
1064: n->next->prev = n->prev;
1065:
1066: /* Adjust parent. */
1067:
1068: if (n->parent != NULL) {
1069: if (n->parent->child == n)
1070: n->parent->child = n->next;
1071: if (n->parent->last == n)
1072: n->parent->last = n->prev;
1073: }
1074:
1075: /* Adjust parse point. */
1076:
1077: if (man == NULL)
1078: return;
1079: if (man->last == n) {
1080: if (n->prev == NULL) {
1081: man->last = n->parent;
1082: man->next = ROFF_NEXT_CHILD;
1083: } else {
1084: man->last = n->prev;
1085: man->next = ROFF_NEXT_SIBLING;
1086: }
1087: }
1.228 schwarze 1088: if (man->meta.first == n)
1089: man->meta.first = NULL;
1.216 schwarze 1090: }
1091:
1092: void
1093: roff_node_relink(struct roff_man *man, struct roff_node *n)
1094: {
1095: roff_node_unlink(man, n);
1096: n->prev = n->next = NULL;
1097: roff_node_append(man, n);
1.138 schwarze 1098: }
1099:
1100: void
1101: roff_node_free(struct roff_node *n)
1102: {
1103:
1104: if (n->args != NULL)
1105: mdoc_argv_free(n->args);
1106: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1107: free(n->norm);
1.219 schwarze 1108: eqn_box_free(n->eqn);
1.138 schwarze 1109: free(n->string);
1.246 schwarze 1110: free(n->tag);
1.138 schwarze 1111: free(n);
1112: }
1113:
1114: void
1115: roff_node_delete(struct roff_man *man, struct roff_node *n)
1116: {
1117:
1118: while (n->child != NULL)
1119: roff_node_delete(man, n->child);
1120: roff_node_unlink(man, n);
1121: roff_node_free(n);
1.242 schwarze 1122: }
1123:
1124: int
1125: roff_node_transparent(struct roff_node *n)
1126: {
1127: if (n == NULL)
1128: return 0;
1129: if (n->type == ROFFT_COMMENT || n->flags & NODE_NOPRT)
1130: return 1;
1.245 schwarze 1131: return roff_tok_transparent(n->tok);
1132: }
1133:
1134: int
1135: roff_tok_transparent(enum roff_tok tok)
1136: {
1137: switch (tok) {
1.242 schwarze 1138: case ROFF_ft:
1139: case ROFF_ll:
1140: case ROFF_mc:
1141: case ROFF_po:
1142: case ROFF_ta:
1143: case MDOC_Db:
1144: case MDOC_Es:
1145: case MDOC_Sm:
1146: case MDOC_Tg:
1147: case MAN_DT:
1148: case MAN_UC:
1149: case MAN_PD:
1150: case MAN_AT:
1151: return 1;
1152: default:
1153: return 0;
1154: }
1155: }
1156:
1157: struct roff_node *
1158: roff_node_child(struct roff_node *n)
1159: {
1160: for (n = n->child; roff_node_transparent(n); n = n->next)
1161: continue;
1162: return n;
1163: }
1164:
1165: struct roff_node *
1166: roff_node_prev(struct roff_node *n)
1167: {
1168: do {
1169: n = n->prev;
1170: } while (roff_node_transparent(n));
1171: return n;
1172: }
1173:
1174: struct roff_node *
1175: roff_node_next(struct roff_node *n)
1176: {
1177: do {
1178: n = n->next;
1179: } while (roff_node_transparent(n));
1180: return n;
1.141 schwarze 1181: }
1182:
1183: void
1184: deroff(char **dest, const struct roff_node *n)
1185: {
1186: char *cp;
1187: size_t sz;
1188:
1.243 schwarze 1189: if (n->string == NULL) {
1.141 schwarze 1190: for (n = n->child; n != NULL; n = n->next)
1191: deroff(dest, n);
1192: return;
1193: }
1194:
1.160 schwarze 1195: /* Skip leading whitespace. */
1.141 schwarze 1196:
1.160 schwarze 1197: for (cp = n->string; *cp != '\0'; cp++) {
1.161 schwarze 1198: if (cp[0] == '\\' && cp[1] != '\0' &&
1199: strchr(" %&0^|~", cp[1]) != NULL)
1.141 schwarze 1200: cp++;
1.160 schwarze 1201: else if ( ! isspace((unsigned char)*cp))
1.141 schwarze 1202: break;
1203: }
1204:
1.161 schwarze 1205: /* Skip trailing backslash. */
1206:
1207: sz = strlen(cp);
1.162 schwarze 1208: if (sz > 0 && cp[sz - 1] == '\\')
1.161 schwarze 1209: sz--;
1210:
1.141 schwarze 1211: /* Skip trailing whitespace. */
1212:
1.161 schwarze 1213: for (; sz; sz--)
1.141 schwarze 1214: if ( ! isspace((unsigned char)cp[sz-1]))
1215: break;
1216:
1217: /* Skip empty strings. */
1218:
1219: if (sz == 0)
1220: return;
1221:
1222: if (*dest == NULL) {
1223: *dest = mandoc_strndup(cp, sz);
1224: return;
1225: }
1226:
1227: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1228: free(*dest);
1229: *dest = cp;
1.138 schwarze 1230: }
1231:
1232: /* --- main functions of the roff parser ---------------------------------- */
1233:
1.259 ! schwarze 1234: static int
! 1235: roff_parse_comment(struct roff *r, struct buf *buf, int ln, int pos,
! 1236: char newesc)
! 1237: {
! 1238: struct roff_node *n; /* used for header comments */
! 1239: const char *start; /* start of the string to process */
! 1240: const char *cp; /* for RCS id parsing */
! 1241: char *stesc; /* start of an escape sequence ('\\') */
! 1242: char *ep; /* end of comment string */
! 1243: int rcsid; /* kind of RCS id seen */
! 1244:
! 1245: for (start = stesc = buf->buf + pos;; stesc++) {
! 1246: /* The line ends without continuation or comment. */
! 1247: if (stesc[0] == '\0')
! 1248: return ROFF_CONT;
! 1249:
! 1250: /* Unescaped byte: skip it. */
! 1251: if (stesc[0] != newesc)
! 1252: continue;
! 1253:
! 1254: /* Backslash at end of line requests line continuation. */
! 1255: if (stesc[1] == '\0') {
! 1256: stesc[0] = '\0';
! 1257: return ROFF_IGN | ROFF_APPEND;
! 1258: }
! 1259:
! 1260: /* Found a comment: process it. */
! 1261: if (stesc[1] == '"' || stesc[1] == '#')
! 1262: break;
! 1263:
! 1264: /* Escaped escape character: skip them both. */
! 1265: if (stesc[1] == newesc)
! 1266: stesc++;
! 1267: }
! 1268:
! 1269: /* Look for an RCS id in the comment. */
! 1270:
! 1271: rcsid = 0;
! 1272: if ((cp = strstr(stesc + 2, "$" "OpenBSD")) != NULL) {
! 1273: rcsid = 1 << MANDOC_OS_OPENBSD;
! 1274: cp += 8;
! 1275: } else if ((cp = strstr(stesc + 2, "$" "NetBSD")) != NULL) {
! 1276: rcsid = 1 << MANDOC_OS_NETBSD;
! 1277: cp += 7;
! 1278: }
! 1279: if (cp != NULL && isalnum((unsigned char)*cp) == 0 &&
! 1280: strchr(cp, '$') != NULL) {
! 1281: if (r->man->meta.rcsids & rcsid)
! 1282: mandoc_msg(MANDOCERR_RCS_REP, ln,
! 1283: (int)(stesc - buf->buf) + 2, "%s", stesc + 1);
! 1284: r->man->meta.rcsids |= rcsid;
! 1285: }
! 1286:
! 1287: /* Warn about trailing whitespace at the end of the comment. */
! 1288:
! 1289: ep = strchr(stesc + 2, '\0') - 1;
! 1290: if (*ep == '\n')
! 1291: *ep-- = '\0';
! 1292: if (*ep == ' ' || *ep == '\t')
! 1293: mandoc_msg(MANDOCERR_SPACE_EOL,
! 1294: ln, (int)(ep - buf->buf), NULL);
! 1295:
! 1296: /* Save comments preceding the title macro in the syntax tree. */
! 1297:
! 1298: if (r->options & MPARSE_COMMENT) {
! 1299: while (*ep == ' ' || *ep == '\t')
! 1300: ep--;
! 1301: ep[1] = '\0';
! 1302: n = roff_node_alloc(r->man, ln, stesc + 1 - buf->buf,
! 1303: ROFFT_COMMENT, TOKEN_NONE);
! 1304: n->string = mandoc_strdup(stesc + 2);
! 1305: roff_node_append(r->man, n);
! 1306: n->flags |= NODE_VALID | NODE_ENDED;
! 1307: r->man->next = ROFF_NEXT_SIBLING;
! 1308: }
! 1309:
! 1310: /* The comment requests line continuation. */
! 1311:
! 1312: if (stesc[1] == '#') {
! 1313: *stesc = '\0';
! 1314: return ROFF_IGN | ROFF_APPEND;
! 1315: }
! 1316:
! 1317: /* Discard the comment including preceding whitespace. */
! 1318:
! 1319: while (stesc > start && stesc[-1] == ' ' &&
! 1320: (stesc == start + 1 || stesc[-2] != '\\'))
! 1321: stesc--;
! 1322: *stesc = '\0';
! 1323: return ROFF_CONT;
! 1324: }
! 1325:
1.8 schwarze 1326: /*
1.227 schwarze 1327: * In the current line, expand escape sequences that produce parsable
1328: * input text. Also check the syntax of the remaining escape sequences,
1329: * which typically produce output glyphs or change formatter state.
1.8 schwarze 1330: */
1.212 schwarze 1331: static int
1.227 schwarze 1332: roff_expand(struct roff *r, struct buf *buf, int ln, int pos, char newesc)
1.8 schwarze 1333: {
1.211 schwarze 1334: struct mctx *ctx; /* current macro call context */
1.81 schwarze 1335: char ubuf[24]; /* buffer to print the number */
1.78 schwarze 1336: const char *start; /* start of the string to process */
1.82 schwarze 1337: char *stesc; /* start of an escape sequence ('\\') */
1.224 schwarze 1338: const char *esct; /* type of esccape sequence */
1.23 schwarze 1339: const char *stnam; /* start of the name, after "[(*" */
1340: const char *cp; /* end of the name, e.g. before ']' */
1341: const char *res; /* the string to be substituted */
1.110 schwarze 1342: char *nbuf; /* new buffer to copy buf->buf to */
1.53 schwarze 1343: size_t maxl; /* expected length of the escape name */
1344: size_t naml; /* actual length of the escape name */
1.211 schwarze 1345: size_t asz; /* length of the replacement */
1346: size_t rsz; /* length of the rest of the string */
1.109 schwarze 1347: int inaml; /* length returned from mandoc_escape() */
1.53 schwarze 1348: int expand_count; /* to avoid infinite loops */
1.79 schwarze 1349: int npos; /* position in numeric expression */
1.91 schwarze 1350: int arg_complete; /* argument not interrupted by eol */
1.211 schwarze 1351: int quote_args; /* true for \\$@, false for \\$* */
1.187 schwarze 1352: int deftype; /* type of definition to paste */
1.224 schwarze 1353: enum mandocerr err; /* for escape sequence problems */
1.199 schwarze 1354: char sign; /* increment number register */
1.79 schwarze 1355: char term; /* character terminating the escape */
1.8 schwarze 1356:
1.175 schwarze 1357: start = buf->buf + pos;
1.259 ! schwarze 1358: stesc = strchr(start, '\0') - 1;
! 1359: if (stesc >= start && *stesc == '\n')
1.175 schwarze 1360: *stesc-- = '\0';
1361:
1.43 schwarze 1362: expand_count = 0;
1.175 schwarze 1363: while (stesc >= start) {
1.227 schwarze 1364: if (*stesc != newesc) {
1.43 schwarze 1365:
1.227 schwarze 1366: /*
1367: * If we have a non-standard escape character,
1368: * escape literal backslashes because all
1369: * processing in subsequent functions uses
1370: * the standard escaping rules.
1371: */
1.78 schwarze 1372:
1.227 schwarze 1373: if (newesc != ASCII_ESC && *stesc == '\\') {
1.175 schwarze 1374: *stesc = '\0';
1375: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1376: buf->buf, stesc + 1) + 1;
1377: start = nbuf + pos;
1378: stesc = nbuf + (stesc - buf->buf);
1379: free(buf->buf);
1380: buf->buf = nbuf;
1381: }
1.227 schwarze 1382:
1383: /* Search backwards for the next escape. */
1384:
1.175 schwarze 1385: stesc--;
1.78 schwarze 1386: continue;
1.175 schwarze 1387: }
1.78 schwarze 1388:
1389: /* If it is escaped, skip it. */
1390:
1391: for (cp = stesc - 1; cp >= start; cp--)
1.175 schwarze 1392: if (*cp != r->escape)
1.78 schwarze 1393: break;
1394:
1.110 schwarze 1395: if ((stesc - cp) % 2 == 0) {
1.175 schwarze 1396: while (stesc > cp)
1397: *stesc-- = '\\';
1.78 schwarze 1398: continue;
1.259 ! schwarze 1399: } else if (stesc[1] == '\0') {
! 1400: *stesc-- = '\0';
! 1401: continue;
! 1402: } else
1.175 schwarze 1403: *stesc = '\\';
1.23 schwarze 1404:
1.79 schwarze 1405: /* Decide whether to expand or to check only. */
1.23 schwarze 1406:
1.79 schwarze 1407: term = '\0';
1.78 schwarze 1408: cp = stesc + 1;
1.253 schwarze 1409: while (*cp == 'E')
1.224 schwarze 1410: cp++;
1411: esct = cp;
1412: switch (*esct) {
1.80 schwarze 1413: case '*':
1.211 schwarze 1414: case '$':
1.53 schwarze 1415: res = NULL;
1416: break;
1.80 schwarze 1417: case 'B':
1418: case 'w':
1.79 schwarze 1419: term = cp[1];
1420: /* FALLTHROUGH */
1.80 schwarze 1421: case 'n':
1.199 schwarze 1422: sign = cp[1];
1423: if (sign == '+' || sign == '-')
1424: cp++;
1.53 schwarze 1425: res = ubuf;
1426: break;
1427: default:
1.224 schwarze 1428: err = MANDOCERR_OK;
1429: switch(mandoc_escape(&cp, &stnam, &inaml)) {
1430: case ESCAPE_SPECIAL:
1431: if (mchars_spec2cp(stnam, inaml) >= 0)
1432: break;
1433: /* FALLTHROUGH */
1434: case ESCAPE_ERROR:
1435: err = MANDOCERR_ESC_BAD;
1436: break;
1437: case ESCAPE_UNDEF:
1438: err = MANDOCERR_ESC_UNDEF;
1439: break;
1440: case ESCAPE_UNSUPP:
1441: err = MANDOCERR_ESC_UNSUPP;
1442: break;
1443: default:
1444: break;
1445: }
1446: if (err != MANDOCERR_OK)
1447: mandoc_msg(err, ln, (int)(stesc - buf->buf),
1.92 schwarze 1448: "%.*s", (int)(cp - stesc), stesc);
1.175 schwarze 1449: stesc--;
1.78 schwarze 1450: continue;
1.42 schwarze 1451: }
1452:
1.78 schwarze 1453: if (EXPAND_LIMIT < ++expand_count) {
1.222 schwarze 1454: mandoc_msg(MANDOCERR_ROFFLOOP,
1.110 schwarze 1455: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1456: return ROFF_IGN;
1.78 schwarze 1457: }
1.23 schwarze 1458:
1459: /*
1460: * The third character decides the length
1.53 schwarze 1461: * of the name of the string or register.
1.23 schwarze 1462: * Save a pointer to the name.
1463: */
1464:
1.110 schwarze 1465: if (term == '\0') {
1.79 schwarze 1466: switch (*++cp) {
1.80 schwarze 1467: case '\0':
1.79 schwarze 1468: maxl = 0;
1469: break;
1.80 schwarze 1470: case '(':
1.79 schwarze 1471: cp++;
1472: maxl = 2;
1473: break;
1.80 schwarze 1474: case '[':
1.79 schwarze 1475: cp++;
1476: term = ']';
1477: maxl = 0;
1478: break;
1479: default:
1480: maxl = 1;
1481: break;
1482: }
1483: } else {
1484: cp += 2;
1.8 schwarze 1485: maxl = 0;
1486: }
1.23 schwarze 1487: stnam = cp;
1.8 schwarze 1488:
1.23 schwarze 1489: /* Advance to the end of the name. */
1.8 schwarze 1490:
1.125 schwarze 1491: naml = 0;
1.91 schwarze 1492: arg_complete = 1;
1.125 schwarze 1493: while (maxl == 0 || naml < maxl) {
1.110 schwarze 1494: if (*cp == '\0') {
1.222 schwarze 1495: mandoc_msg(MANDOCERR_ESC_BAD, ln,
1496: (int)(stesc - buf->buf), "%s", stesc);
1.91 schwarze 1497: arg_complete = 0;
1.79 schwarze 1498: break;
1.42 schwarze 1499: }
1.110 schwarze 1500: if (maxl == 0 && *cp == term) {
1.79 schwarze 1501: cp++;
1.125 schwarze 1502: break;
1503: }
1.224 schwarze 1504: if (*cp++ != '\\' || *esct != 'w') {
1.125 schwarze 1505: naml++;
1506: continue;
1507: }
1508: switch (mandoc_escape(&cp, NULL, NULL)) {
1509: case ESCAPE_SPECIAL:
1510: case ESCAPE_UNICODE:
1511: case ESCAPE_NUMBERED:
1.224 schwarze 1512: case ESCAPE_UNDEF:
1.125 schwarze 1513: case ESCAPE_OVERSTRIKE:
1514: naml++;
1515: break;
1516: default:
1.8 schwarze 1517: break;
1.79 schwarze 1518: }
1.8 schwarze 1519: }
1520:
1.23 schwarze 1521: /*
1522: * Retrieve the replacement string; if it is
1523: * undefined, resume searching for escapes.
1524: */
1525:
1.224 schwarze 1526: switch (*esct) {
1.80 schwarze 1527: case '*':
1.187 schwarze 1528: if (arg_complete) {
1529: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1530: res = roff_getstrn(r, stnam, naml, &deftype);
1.203 schwarze 1531:
1532: /*
1533: * If not overriden, let \*(.T
1534: * through to the formatters.
1535: */
1536:
1537: if (res == NULL && naml == 2 &&
1538: stnam[0] == '.' && stnam[1] == 'T') {
1539: roff_setstrn(&r->strtab,
1540: ".T", 2, NULL, 0, 0);
1541: stesc--;
1542: continue;
1543: }
1.187 schwarze 1544: }
1.79 schwarze 1545: break;
1.211 schwarze 1546: case '$':
1547: if (r->mstackpos < 0) {
1.222 schwarze 1548: mandoc_msg(MANDOCERR_ARG_UNDEF, ln,
1549: (int)(stesc - buf->buf), "%.3s", stesc);
1.211 schwarze 1550: break;
1551: }
1552: ctx = r->mstack + r->mstackpos;
1.224 schwarze 1553: npos = esct[1] - '1';
1.211 schwarze 1554: if (npos >= 0 && npos <= 8) {
1555: res = npos < ctx->argc ?
1556: ctx->argv[npos] : "";
1557: break;
1558: }
1.224 schwarze 1559: if (esct[1] == '*')
1.211 schwarze 1560: quote_args = 0;
1.224 schwarze 1561: else if (esct[1] == '@')
1.211 schwarze 1562: quote_args = 1;
1563: else {
1.222 schwarze 1564: mandoc_msg(MANDOCERR_ARG_NONUM, ln,
1565: (int)(stesc - buf->buf), "%.3s", stesc);
1.211 schwarze 1566: break;
1567: }
1568: asz = 0;
1569: for (npos = 0; npos < ctx->argc; npos++) {
1570: if (npos)
1571: asz++; /* blank */
1572: if (quote_args)
1573: asz += 2; /* quotes */
1574: asz += strlen(ctx->argv[npos]);
1575: }
1576: if (asz != 3) {
1577: rsz = buf->sz - (stesc - buf->buf) - 3;
1578: if (asz < 3)
1579: memmove(stesc + asz, stesc + 3, rsz);
1580: buf->sz += asz - 3;
1581: nbuf = mandoc_realloc(buf->buf, buf->sz);
1582: start = nbuf + pos;
1583: stesc = nbuf + (stesc - buf->buf);
1584: buf->buf = nbuf;
1585: if (asz > 3)
1586: memmove(stesc + asz, stesc + 3, rsz);
1587: }
1588: for (npos = 0; npos < ctx->argc; npos++) {
1589: if (npos)
1590: *stesc++ = ' ';
1591: if (quote_args)
1592: *stesc++ = '"';
1593: cp = ctx->argv[npos];
1594: while (*cp != '\0')
1595: *stesc++ = *cp++;
1596: if (quote_args)
1597: *stesc++ = '"';
1598: }
1599: continue;
1.80 schwarze 1600: case 'B':
1.79 schwarze 1601: npos = 0;
1.91 schwarze 1602: ubuf[0] = arg_complete &&
1.133 schwarze 1603: roff_evalnum(r, ln, stnam, &npos,
1604: NULL, ROFFNUM_SCALE) &&
1.91 schwarze 1605: stnam + npos + 1 == cp ? '1' : '0';
1.79 schwarze 1606: ubuf[1] = '\0';
1607: break;
1.80 schwarze 1608: case 'n':
1.91 schwarze 1609: if (arg_complete)
1610: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.199 schwarze 1611: roff_getregn(r, stnam, naml, sign));
1.91 schwarze 1612: else
1613: ubuf[0] = '\0';
1.79 schwarze 1614: break;
1.80 schwarze 1615: case 'w':
1.91 schwarze 1616: /* use even incomplete args */
1.81 schwarze 1617: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.79 schwarze 1618: 24 * (int)naml);
1619: break;
1620: }
1.8 schwarze 1621:
1.110 schwarze 1622: if (res == NULL) {
1.224 schwarze 1623: if (*esct == '*')
1.222 schwarze 1624: mandoc_msg(MANDOCERR_STR_UNDEF,
1625: ln, (int)(stesc - buf->buf),
1.211 schwarze 1626: "%.*s", (int)naml, stnam);
1.37 schwarze 1627: res = "";
1.118 schwarze 1628: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1.222 schwarze 1629: mandoc_msg(MANDOCERR_ROFFLOOP,
1.118 schwarze 1630: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1631: return ROFF_IGN;
1.8 schwarze 1632: }
1633:
1.23 schwarze 1634: /* Replace the escape sequence by the string. */
1635:
1.82 schwarze 1636: *stesc = '\0';
1.110 schwarze 1637: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1638: buf->buf, res, cp) + 1;
1.8 schwarze 1639:
1.78 schwarze 1640: /* Prepare for the next replacement. */
1.8 schwarze 1641:
1.78 schwarze 1642: start = nbuf + pos;
1.110 schwarze 1643: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1644: free(buf->buf);
1645: buf->buf = nbuf;
1.42 schwarze 1646: }
1.149 schwarze 1647: return ROFF_CONT;
1.42 schwarze 1648: }
1.225 schwarze 1649:
1650: /*
1651: * Parse a quoted or unquoted roff-style request or macro argument.
1652: * Return a pointer to the parsed argument, which is either the original
1653: * pointer or advanced by one byte in case the argument is quoted.
1654: * NUL-terminate the argument in place.
1655: * Collapse pairs of quotes inside quoted arguments.
1656: * Advance the argument pointer to the next argument,
1657: * or to the NUL byte terminating the argument line.
1658: */
1659: char *
1.227 schwarze 1660: roff_getarg(struct roff *r, char **cpp, int ln, int *pos)
1.225 schwarze 1661: {
1.227 schwarze 1662: struct buf buf;
1.238 schwarze 1663: char *cp, *start;
1.227 schwarze 1664: int newesc, pairs, quoted, white;
1.225 schwarze 1665:
1666: /* Quoting can only start with a new word. */
1667: start = *cpp;
1668: quoted = 0;
1669: if ('"' == *start) {
1670: quoted = 1;
1671: start++;
1672: }
1673:
1.227 schwarze 1674: newesc = pairs = white = 0;
1.225 schwarze 1675: for (cp = start; '\0' != *cp; cp++) {
1676:
1677: /*
1678: * Move the following text left
1679: * after quoted quotes and after "\\" and "\t".
1680: */
1681: if (pairs)
1682: cp[-pairs] = cp[0];
1683:
1684: if ('\\' == cp[0]) {
1685: /*
1686: * In copy mode, translate double to single
1687: * backslashes and backslash-t to literal tabs.
1688: */
1689: switch (cp[1]) {
1690: case 'a':
1691: case 't':
1.226 schwarze 1692: cp[-pairs] = '\t';
1.227 schwarze 1693: pairs++;
1694: cp++;
1695: break;
1.225 schwarze 1696: case '\\':
1.227 schwarze 1697: newesc = 1;
1698: cp[-pairs] = ASCII_ESC;
1.225 schwarze 1699: pairs++;
1700: cp++;
1701: break;
1702: case ' ':
1703: /* Skip escaped blanks. */
1704: if (0 == quoted)
1705: cp++;
1706: break;
1707: default:
1708: break;
1709: }
1710: } else if (0 == quoted) {
1711: if (' ' == cp[0]) {
1712: /* Unescaped blanks end unquoted args. */
1713: white = 1;
1714: break;
1715: }
1716: } else if ('"' == cp[0]) {
1717: if ('"' == cp[1]) {
1718: /* Quoted quotes collapse. */
1719: pairs++;
1720: cp++;
1721: } else {
1722: /* Unquoted quotes end quoted args. */
1723: quoted = 2;
1724: break;
1725: }
1726: }
1727: }
1728:
1729: /* Quoted argument without a closing quote. */
1730: if (1 == quoted)
1731: mandoc_msg(MANDOCERR_ARG_QUOTE, ln, *pos, NULL);
1732:
1733: /* NUL-terminate this argument and move to the next one. */
1734: if (pairs)
1735: cp[-pairs] = '\0';
1736: if ('\0' != *cp) {
1737: *cp++ = '\0';
1738: while (' ' == *cp)
1739: cp++;
1740: }
1741: *pos += (int)(cp - start) + (quoted ? 1 : 0);
1742: *cpp = cp;
1743:
1744: if ('\0' == *cp && (white || ' ' == cp[-1]))
1745: mandoc_msg(MANDOCERR_SPACE_EOL, ln, *pos, NULL);
1746:
1.227 schwarze 1747: start = mandoc_strdup(start);
1748: if (newesc == 0)
1749: return start;
1750:
1751: buf.buf = start;
1752: buf.sz = strlen(start) + 1;
1753: buf.next = NULL;
1754: if (roff_expand(r, &buf, ln, 0, ASCII_ESC) & ROFF_IGN) {
1755: free(buf.buf);
1756: buf.buf = mandoc_strdup("");
1757: }
1758: return buf.buf;
1.225 schwarze 1759: }
1760:
1.42 schwarze 1761:
1762: /*
1.147 schwarze 1763: * Process text streams.
1.42 schwarze 1764: */
1.212 schwarze 1765: static int
1.177 schwarze 1766: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.42 schwarze 1767: {
1768: size_t sz;
1769: const char *start;
1.51 schwarze 1770: char *p;
1771: int isz;
1.42 schwarze 1772: enum mandoc_esc esc;
1773:
1.147 schwarze 1774: /* Spring the input line trap. */
1775:
1776: if (roffit_lines == 1) {
1777: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1778: free(buf->buf);
1779: buf->buf = p;
1780: buf->sz = isz + 1;
1781: *offs = 0;
1782: free(roffit_macro);
1783: roffit_lines = 0;
1.149 schwarze 1784: return ROFF_REPARSE;
1.147 schwarze 1785: } else if (roffit_lines > 1)
1786: --roffit_lines;
1787:
1.177 schwarze 1788: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1789: if (roffce_lines < 1) {
1790: r->man->last = roffce_node;
1791: r->man->next = ROFF_NEXT_SIBLING;
1792: roffce_lines = 0;
1793: roffce_node = NULL;
1794: } else
1795: roffce_lines--;
1796: }
1797:
1.147 schwarze 1798: /* Convert all breakable hyphens into ASCII_HYPH. */
1799:
1.110 schwarze 1800: start = p = buf->buf + pos;
1.42 schwarze 1801:
1.110 schwarze 1802: while (*p != '\0') {
1.42 schwarze 1803: sz = strcspn(p, "-\\");
1804: p += sz;
1805:
1.110 schwarze 1806: if (*p == '\0')
1.42 schwarze 1807: break;
1808:
1.110 schwarze 1809: if (*p == '\\') {
1.42 schwarze 1810: /* Skip over escapes. */
1811: p++;
1.62 schwarze 1812: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.110 schwarze 1813: if (esc == ESCAPE_ERROR)
1.42 schwarze 1814: break;
1.136 schwarze 1815: while (*p == '-')
1816: p++;
1.42 schwarze 1817: continue;
1818: } else if (p == start) {
1819: p++;
1820: continue;
1821: }
1822:
1.44 schwarze 1823: if (isalpha((unsigned char)p[-1]) &&
1824: isalpha((unsigned char)p[1]))
1.42 schwarze 1825: *p = ASCII_HYPH;
1826: p++;
1.8 schwarze 1827: }
1.149 schwarze 1828: return ROFF_CONT;
1.8 schwarze 1829: }
1830:
1.212 schwarze 1831: int
1.249 schwarze 1832: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs, size_t len)
1.1 schwarze 1833: {
1.166 schwarze 1834: enum roff_tok t;
1.212 schwarze 1835: int e;
1.110 schwarze 1836: int pos; /* parse point */
1.115 schwarze 1837: int spos; /* saved parse point for messages */
1.110 schwarze 1838: int ppos; /* original offset in buf->buf */
1839: int ctl; /* macro line (boolean) */
1840:
1841: ppos = pos = *offs;
1.249 schwarze 1842:
1843: if (len > 80 && r->tbl == NULL && r->eqn == NULL &&
1844: (r->man->flags & ROFF_NOFILL) == 0 &&
1845: strchr(" .\\", buf->buf[pos]) == NULL &&
1846: buf->buf[pos] != r->control &&
1847: strcspn(buf->buf, " ") < 80)
1848: mandoc_msg(MANDOCERR_TEXT_LONG, ln, (int)len - 1,
1849: "%.20s...", buf->buf + pos);
1.1 schwarze 1850:
1.102 schwarze 1851: /* Handle in-line equation delimiters. */
1852:
1.108 schwarze 1853: if (r->tbl == NULL &&
1854: r->last_eqn != NULL && r->last_eqn->delim &&
1.102 schwarze 1855: (r->eqn == NULL || r->eqn_inline)) {
1.110 schwarze 1856: e = roff_eqndelim(r, buf, pos);
1.102 schwarze 1857: if (e == ROFF_REPARSE)
1.149 schwarze 1858: return e;
1.102 schwarze 1859: assert(e == ROFF_CONT);
1860: }
1861:
1.259 ! schwarze 1862: /* Handle comments and escape sequences. */
! 1863:
! 1864: e = roff_parse_comment(r, buf, ln, pos, r->escape);
! 1865: if ((e & ROFF_MASK) == ROFF_IGN)
! 1866: return e;
! 1867: assert(e == ROFF_CONT);
1.8 schwarze 1868:
1.227 schwarze 1869: e = roff_expand(r, buf, ln, pos, r->escape);
1.212 schwarze 1870: if ((e & ROFF_MASK) == ROFF_IGN)
1.149 schwarze 1871: return e;
1.110 schwarze 1872: assert(e == ROFF_CONT);
1.8 schwarze 1873:
1.110 schwarze 1874: ctl = roff_getcontrol(r, buf->buf, &pos);
1.35 schwarze 1875:
1.8 schwarze 1876: /*
1.2 schwarze 1877: * First, if a scope is open and we're not a macro, pass the
1.124 schwarze 1878: * text through the macro's filter.
1879: * Equations process all content themselves.
1880: * Tables process almost all content themselves, but we want
1881: * to warn about macros before passing it there.
1.2 schwarze 1882: */
1883:
1.124 schwarze 1884: if (r->last != NULL && ! ctl) {
1.2 schwarze 1885: t = r->last->tok;
1.110 schwarze 1886: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.212 schwarze 1887: if ((e & ROFF_MASK) == ROFF_IGN)
1.149 schwarze 1888: return e;
1.212 schwarze 1889: e &= ~ROFF_MASK;
1890: } else
1891: e = ROFF_IGN;
1.191 schwarze 1892: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1893: eqn_read(r->eqn, buf->buf + ppos);
1.212 schwarze 1894: return e;
1.191 schwarze 1895: }
1.193 schwarze 1896: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1897: tbl_read(r->tbl, ln, buf->buf, ppos);
1.218 schwarze 1898: roff_addtbl(r->man, ln, r->tbl);
1.212 schwarze 1899: return e;
1.193 schwarze 1900: }
1.239 schwarze 1901: if ( ! ctl) {
1902: r->options &= ~MPARSE_COMMENT;
1.212 schwarze 1903: return roff_parsetext(r, buf, pos, offs) | e;
1.239 schwarze 1904: }
1.100 schwarze 1905:
1906: /* Skip empty request lines. */
1907:
1.110 schwarze 1908: if (buf->buf[pos] == '"') {
1.222 schwarze 1909: mandoc_msg(MANDOCERR_COMMENT_BAD, ln, pos, NULL);
1.149 schwarze 1910: return ROFF_IGN;
1.110 schwarze 1911: } else if (buf->buf[pos] == '\0')
1.149 schwarze 1912: return ROFF_IGN;
1.2 schwarze 1913:
1914: /*
1915: * If a scope is open, go to the child handler for that macro,
1916: * as it may want to preprocess before doing anything with it.
1917: */
1918:
1919: if (r->last) {
1.1 schwarze 1920: t = r->last->tok;
1.149 schwarze 1921: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1922: }
1923:
1.239 schwarze 1924: r->options &= ~MPARSE_COMMENT;
1.115 schwarze 1925: spos = pos;
1926: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.258 schwarze 1927: return roff_req_or_macro(r, t, buf, ln, spos, pos, offs);
1928: }
1929:
1930: /*
1931: * Handle a new request or macro.
1932: * May be called outside any scope or from inside a conditional scope.
1933: */
1934: static int
1935: roff_req_or_macro(ROFF_ARGS) {
1.115 schwarze 1936:
1.258 schwarze 1937: /* For now, tables ignore most macros and some request. */
1.115 schwarze 1938:
1.258 schwarze 1939: if (r->tbl != NULL && (tok == TOKEN_NONE || tok == ROFF_TS ||
1940: tok == ROFF_br || tok == ROFF_ce || tok == ROFF_rj ||
1941: tok == ROFF_sp)) {
1.222 schwarze 1942: mandoc_msg(MANDOCERR_TBLMACRO,
1.258 schwarze 1943: ln, ppos, "%s", buf->buf + ppos);
1944: if (tok != TOKEN_NONE)
1.149 schwarze 1945: return ROFF_IGN;
1.129 schwarze 1946: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1947: pos++;
1.163 schwarze 1948: while (buf->buf[pos] == ' ')
1.129 schwarze 1949: pos++;
1.193 schwarze 1950: tbl_read(r->tbl, ln, buf->buf, pos);
1.218 schwarze 1951: roff_addtbl(r->man, ln, r->tbl);
1.193 schwarze 1952: return ROFF_IGN;
1.115 schwarze 1953: }
1954:
1.177 schwarze 1955: /* For now, let high level macros abort .ce mode. */
1956:
1.258 schwarze 1957: if (roffce_node != NULL &&
1958: (tok == TOKEN_NONE || tok == ROFF_Dd || tok == ROFF_EQ ||
1959: tok == ROFF_TH || tok == ROFF_TS)) {
1.177 schwarze 1960: r->man->last = roffce_node;
1961: r->man->next = ROFF_NEXT_SIBLING;
1962: roffce_lines = 0;
1963: roffce_node = NULL;
1964: }
1965:
1.2 schwarze 1966: /*
1.115 schwarze 1967: * This is neither a roff request nor a user-defined macro.
1968: * Let the standard macro set parsers handle it.
1.2 schwarze 1969: */
1970:
1.258 schwarze 1971: if (tok == TOKEN_NONE)
1.149 schwarze 1972: return ROFF_CONT;
1.115 schwarze 1973:
1.258 schwarze 1974: /* Execute a roff request or a user-defined macro. */
1.1 schwarze 1975:
1.258 schwarze 1976: return (*roffs[tok].proc)(r, tok, buf, ln, ppos, pos, offs);
1.2 schwarze 1977: }
1978:
1.211 schwarze 1979: /*
1980: * Internal interface function to tell the roff parser that execution
1981: * of the current macro ended. This is required because macro
1982: * definitions usually do not end with a .return request.
1983: */
1984: void
1985: roff_userret(struct roff *r)
1986: {
1987: struct mctx *ctx;
1988: int i;
1989:
1990: assert(r->mstackpos >= 0);
1991: ctx = r->mstack + r->mstackpos;
1992: for (i = 0; i < ctx->argc; i++)
1993: free(ctx->argv[i]);
1994: ctx->argc = 0;
1995: r->mstackpos--;
1996: }
1997:
1.27 schwarze 1998: void
1.2 schwarze 1999: roff_endparse(struct roff *r)
2000: {
1.193 schwarze 2001: if (r->last != NULL)
1.222 schwarze 2002: mandoc_msg(MANDOCERR_BLK_NOEND, r->last->line,
2003: r->last->col, "%s", roff_name[r->last->tok]);
1.27 schwarze 2004:
1.193 schwarze 2005: if (r->eqn != NULL) {
1.222 schwarze 2006: mandoc_msg(MANDOCERR_BLK_NOEND,
1.191 schwarze 2007: r->eqn->node->line, r->eqn->node->pos, "EQ");
2008: eqn_parse(r->eqn);
2009: r->eqn = NULL;
1.32 schwarze 2010: }
2011:
1.193 schwarze 2012: if (r->tbl != NULL) {
1.218 schwarze 2013: tbl_end(r->tbl, 1);
1.193 schwarze 2014: r->tbl = NULL;
1.27 schwarze 2015: }
1.1 schwarze 2016: }
2017:
2018: /*
1.258 schwarze 2019: * Parse the request or macro name at buf[*pos].
2020: * Return ROFF_RENAMED, ROFF_USERDEF, or a ROFF_* token value.
2021: * For empty, undefined, mdoc(7), and man(7) macros, return TOKEN_NONE.
2022: * As a side effect, set r->current_string to the definition or to NULL.
1.1 schwarze 2023: */
1.166 schwarze 2024: static enum roff_tok
1.87 schwarze 2025: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.1 schwarze 2026: {
1.87 schwarze 2027: char *cp;
1.16 schwarze 2028: const char *mac;
2029: size_t maclen;
1.187 schwarze 2030: int deftype;
1.166 schwarze 2031: enum roff_tok t;
1.1 schwarze 2032:
1.87 schwarze 2033: cp = buf + *pos;
2034:
2035: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.166 schwarze 2036: return TOKEN_NONE;
1.1 schwarze 2037:
1.87 schwarze 2038: mac = cp;
2039: maclen = roff_getname(r, &cp, ln, ppos);
1.1 schwarze 2040:
1.187 schwarze 2041: deftype = ROFFDEF_USER | ROFFDEF_REN;
2042: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
2043: switch (deftype) {
2044: case ROFFDEF_USER:
2045: t = ROFF_USERDEF;
2046: break;
2047: case ROFFDEF_REN:
2048: t = ROFF_RENAMED;
2049: break;
2050: default:
2051: t = roffhash_find(r->reqtab, mac, maclen);
2052: break;
2053: }
1.166 schwarze 2054: if (t != TOKEN_NONE)
1.87 schwarze 2055: *pos = cp - buf;
1.197 schwarze 2056: else if (deftype == ROFFDEF_UNDEF) {
2057: /* Using an undefined macro defines it to be empty. */
2058: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
2059: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
2060: }
1.149 schwarze 2061: return t;
1.1 schwarze 2062: }
2063:
1.138 schwarze 2064: /* --- handling of request blocks ----------------------------------------- */
2065:
1.247 schwarze 2066: /*
2067: * Close a macro definition block or an "ignore" block.
2068: */
1.212 schwarze 2069: static int
1.2 schwarze 2070: roff_cblock(ROFF_ARGS)
1.1 schwarze 2071: {
1.247 schwarze 2072: int rr;
1.2 schwarze 2073:
1.110 schwarze 2074: if (r->last == NULL) {
1.222 schwarze 2075: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.149 schwarze 2076: return ROFF_IGN;
1.2 schwarze 2077: }
1.1 schwarze 2078:
1.2 schwarze 2079: switch (r->last->tok) {
1.80 schwarze 2080: case ROFF_am:
2081: case ROFF_ami:
2082: case ROFF_de:
2083: case ROFF_dei:
2084: case ROFF_ig:
1.2 schwarze 2085: break;
1.247 schwarze 2086: case ROFF_am1:
2087: case ROFF_de1:
2088: /* Remapped in roff_block(). */
2089: abort();
1.2 schwarze 2090: default:
1.222 schwarze 2091: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.149 schwarze 2092: return ROFF_IGN;
1.2 schwarze 2093: }
2094:
1.247 schwarze 2095: roffnode_pop(r);
2096: roffnode_cleanscope(r);
2097:
2098: /*
2099: * If a conditional block with braces is still open,
2100: * check for "\}" block end markers.
2101: */
2102:
2103: if (r->last != NULL && r->last->endspan < 0) {
2104: rr = 1; /* If arguments follow "\}", warn about them. */
2105: roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
2106: }
2107:
1.110 schwarze 2108: if (buf->buf[pos] != '\0')
1.222 schwarze 2109: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.110 schwarze 2110: ".. %s", buf->buf + pos);
1.2 schwarze 2111:
1.149 schwarze 2112: return ROFF_IGN;
1.2 schwarze 2113: }
1.1 schwarze 2114:
1.236 schwarze 2115: /*
2116: * Pop all nodes ending at the end of the current input line.
2117: * Return the number of loops ended.
2118: */
1.212 schwarze 2119: static int
1.2 schwarze 2120: roffnode_cleanscope(struct roff *r)
2121: {
1.212 schwarze 2122: int inloop;
1.1 schwarze 2123:
1.212 schwarze 2124: inloop = 0;
1.247 schwarze 2125: while (r->last != NULL && r->last->endspan > 0) {
1.46 schwarze 2126: if (--r->last->endspan != 0)
1.2 schwarze 2127: break;
1.212 schwarze 2128: inloop += roffnode_pop(r);
1.2 schwarze 2129: }
1.212 schwarze 2130: return inloop;
1.2 schwarze 2131: }
1.1 schwarze 2132:
1.236 schwarze 2133: /*
1.247 schwarze 2134: * Handle the closing "\}" of a conditional block.
1.236 schwarze 2135: * Apart from generating warnings, this only pops nodes.
2136: * Return the number of loops ended.
2137: */
1.212 schwarze 2138: static int
1.68 schwarze 2139: roff_ccond(struct roff *r, int ln, int ppos)
1.2 schwarze 2140: {
2141: if (NULL == r->last) {
1.222 schwarze 2142: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.212 schwarze 2143: return 0;
1.2 schwarze 2144: }
1.1 schwarze 2145:
1.2 schwarze 2146: switch (r->last->tok) {
1.80 schwarze 2147: case ROFF_el:
2148: case ROFF_ie:
2149: case ROFF_if:
1.212 schwarze 2150: case ROFF_while:
1.2 schwarze 2151: break;
2152: default:
1.222 schwarze 2153: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.212 schwarze 2154: return 0;
1.2 schwarze 2155: }
1.1 schwarze 2156:
1.2 schwarze 2157: if (r->last->endspan > -1) {
1.222 schwarze 2158: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.212 schwarze 2159: return 0;
1.2 schwarze 2160: }
2161:
1.212 schwarze 2162: return roffnode_pop(r) + roffnode_cleanscope(r);
1.1 schwarze 2163: }
2164:
1.212 schwarze 2165: static int
1.2 schwarze 2166: roff_block(ROFF_ARGS)
1.1 schwarze 2167: {
1.187 schwarze 2168: const char *name, *value;
2169: char *call, *cp, *iname, *rname;
2170: size_t csz, namesz, rsz;
2171: int deftype;
1.16 schwarze 2172:
1.93 schwarze 2173: /* Ignore groff compatibility mode for now. */
1.2 schwarze 2174:
1.110 schwarze 2175: if (tok == ROFF_de1)
1.93 schwarze 2176: tok = ROFF_de;
1.123 schwarze 2177: else if (tok == ROFF_dei1)
2178: tok = ROFF_dei;
1.110 schwarze 2179: else if (tok == ROFF_am1)
1.93 schwarze 2180: tok = ROFF_am;
1.123 schwarze 2181: else if (tok == ROFF_ami1)
2182: tok = ROFF_ami;
1.93 schwarze 2183:
2184: /* Parse the macro name argument. */
2185:
1.110 schwarze 2186: cp = buf->buf + pos;
2187: if (tok == ROFF_ig) {
1.93 schwarze 2188: iname = NULL;
2189: namesz = 0;
2190: } else {
2191: iname = cp;
2192: namesz = roff_getname(r, &cp, ln, ppos);
2193: iname[namesz] = '\0';
2194: }
1.22 schwarze 2195:
1.93 schwarze 2196: /* Resolve the macro name argument if it is indirect. */
1.22 schwarze 2197:
1.110 schwarze 2198: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.187 schwarze 2199: deftype = ROFFDEF_USER;
2200: name = roff_getstrn(r, iname, namesz, &deftype);
2201: if (name == NULL) {
1.222 schwarze 2202: mandoc_msg(MANDOCERR_STR_UNDEF,
2203: ln, (int)(iname - buf->buf),
1.93 schwarze 2204: "%.*s", (int)namesz, iname);
2205: namesz = 0;
2206: } else
2207: namesz = strlen(name);
2208: } else
2209: name = iname;
1.22 schwarze 2210:
1.110 schwarze 2211: if (namesz == 0 && tok != ROFF_ig) {
1.222 schwarze 2212: mandoc_msg(MANDOCERR_REQ_EMPTY,
2213: ln, ppos, "%s", roff_name[tok]);
1.149 schwarze 2214: return ROFF_IGN;
1.93 schwarze 2215: }
1.2 schwarze 2216:
1.16 schwarze 2217: roffnode_push(r, tok, name, ln, ppos);
2218:
2219: /*
2220: * At the beginning of a `de' macro, clear the existing string
2221: * with the same name, if there is one. New content will be
1.66 schwarze 2222: * appended from roff_block_text() in multiline mode.
1.16 schwarze 2223: */
1.22 schwarze 2224:
1.183 schwarze 2225: if (tok == ROFF_de || tok == ROFF_dei) {
1.86 schwarze 2226: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.183 schwarze 2227: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.187 schwarze 2228: } else if (tok == ROFF_am || tok == ROFF_ami) {
2229: deftype = ROFFDEF_ANY;
2230: value = roff_getstrn(r, iname, namesz, &deftype);
2231: switch (deftype) { /* Before appending, ... */
2232: case ROFFDEF_PRE: /* copy predefined to user-defined. */
2233: roff_setstrn(&r->strtab, name, namesz,
2234: value, strlen(value), 0);
2235: break;
2236: case ROFFDEF_REN: /* call original standard macro. */
2237: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2238: (int)strlen(value), value);
2239: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2240: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
2241: free(call);
2242: break;
2243: case ROFFDEF_STD: /* rename and call standard macro. */
2244: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
2245: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
2246: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2247: (int)rsz, rname);
2248: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2249: free(call);
2250: free(rname);
2251: break;
2252: default:
2253: break;
2254: }
1.183 schwarze 2255: }
1.2 schwarze 2256:
1.110 schwarze 2257: if (*cp == '\0')
1.149 schwarze 2258: return ROFF_IGN;
1.1 schwarze 2259:
1.93 schwarze 2260: /* Get the custom end marker. */
1.22 schwarze 2261:
1.93 schwarze 2262: iname = cp;
1.86 schwarze 2263: namesz = roff_getname(r, &cp, ln, ppos);
1.93 schwarze 2264:
2265: /* Resolve the end marker if it is indirect. */
2266:
1.110 schwarze 2267: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.187 schwarze 2268: deftype = ROFFDEF_USER;
2269: name = roff_getstrn(r, iname, namesz, &deftype);
2270: if (name == NULL) {
1.222 schwarze 2271: mandoc_msg(MANDOCERR_STR_UNDEF,
2272: ln, (int)(iname - buf->buf),
1.93 schwarze 2273: "%.*s", (int)namesz, iname);
2274: namesz = 0;
2275: } else
2276: namesz = strlen(name);
2277: } else
2278: name = iname;
2279:
1.86 schwarze 2280: if (namesz)
2281: r->last->end = mandoc_strndup(name, namesz);
1.2 schwarze 2282:
1.110 schwarze 2283: if (*cp != '\0')
1.222 schwarze 2284: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.167 schwarze 2285: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.1 schwarze 2286:
1.149 schwarze 2287: return ROFF_IGN;
1.1 schwarze 2288: }
2289:
1.212 schwarze 2290: static int
1.2 schwarze 2291: roff_block_sub(ROFF_ARGS)
1.1 schwarze 2292: {
1.166 schwarze 2293: enum roff_tok t;
1.2 schwarze 2294: int i, j;
2295:
2296: /*
1.257 schwarze 2297: * If a custom end marker is a user-defined or predefined macro
2298: * or a request, interpret it.
1.2 schwarze 2299: */
2300:
2301: if (r->last->end) {
1.35 schwarze 2302: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.110 schwarze 2303: if (buf->buf[i] != r->last->end[j])
1.2 schwarze 2304: break;
1.1 schwarze 2305:
1.110 schwarze 2306: if (r->last->end[j] == '\0' &&
2307: (buf->buf[i] == '\0' ||
2308: buf->buf[i] == ' ' ||
2309: buf->buf[i] == '\t')) {
1.2 schwarze 2310: roffnode_pop(r);
2311: roffnode_cleanscope(r);
1.1 schwarze 2312:
1.110 schwarze 2313: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.35 schwarze 2314: i++;
2315:
2316: pos = i;
1.110 schwarze 2317: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.166 schwarze 2318: TOKEN_NONE)
1.149 schwarze 2319: return ROFF_RERUN;
2320: return ROFF_IGN;
1.2 schwarze 2321: }
1.1 schwarze 2322: }
2323:
1.257 schwarze 2324: /* Handle the standard end marker. */
1.1 schwarze 2325:
1.110 schwarze 2326: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.257 schwarze 2327: if (t == ROFF_cblock)
2328: return roff_cblock(r, t, buf, ln, ppos, pos, offs);
1.1 schwarze 2329:
1.257 schwarze 2330: /* Not an end marker, so append the line to the block. */
1.1 schwarze 2331:
1.257 schwarze 2332: if (tok != ROFF_ig)
2333: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
2334: return ROFF_IGN;
1.2 schwarze 2335: }
2336:
1.212 schwarze 2337: static int
1.2 schwarze 2338: roff_block_text(ROFF_ARGS)
2339: {
2340:
1.110 schwarze 2341: if (tok != ROFF_ig)
2342: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.16 schwarze 2343:
1.149 schwarze 2344: return ROFF_IGN;
1.2 schwarze 2345: }
2346:
1.247 schwarze 2347: /*
2348: * Check for a closing "\}" and handle it.
2349: * In this function, the final "int *offs" argument is used for
2350: * different purposes than elsewhere:
2351: * Input: *offs == 0: caller wants to discard arguments following \}
2352: * *offs == 1: caller wants to preserve text following \}
2353: * Output: *offs = 0: tell caller to discard input line
2354: * *offs = 1: tell caller to use input line
2355: */
1.212 schwarze 2356: static int
1.247 schwarze 2357: roff_cond_checkend(ROFF_ARGS)
1.2 schwarze 2358: {
1.212 schwarze 2359: char *ep;
2360: int endloop, irc, rr;
1.2 schwarze 2361:
1.212 schwarze 2362: irc = ROFF_IGN;
1.2 schwarze 2363: rr = r->last->rule;
1.212 schwarze 2364: endloop = tok != ROFF_while ? ROFF_IGN :
2365: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2366: if (roffnode_cleanscope(r))
2367: irc |= endloop;
1.39 schwarze 2368:
1.69 schwarze 2369: /*
1.247 schwarze 2370: * If "\}" occurs on a macro line without a preceding macro or
2371: * a text line contains nothing else, drop the line completely.
1.69 schwarze 2372: */
2373:
1.110 schwarze 2374: ep = buf->buf + pos;
1.247 schwarze 2375: if (ep[0] == '\\' && ep[1] == '}' && (ep[2] == '\0' || *offs == 0))
1.71 schwarze 2376: rr = 0;
1.69 schwarze 2377:
1.215 schwarze 2378: /*
1.247 schwarze 2379: * The closing delimiter "\}" rewinds the conditional scope
1.215 schwarze 2380: * but is otherwise ignored when interpreting the line.
2381: */
1.39 schwarze 2382:
1.110 schwarze 2383: while ((ep = strchr(ep, '\\')) != NULL) {
1.190 schwarze 2384: switch (ep[1]) {
2385: case '}':
1.248 schwarze 2386: if (ep[2] == '\0')
2387: ep[0] = '\0';
2388: else if (rr)
1.247 schwarze 2389: ep[1] = '&';
2390: else
2391: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1.212 schwarze 2392: if (roff_ccond(r, ln, ep - buf->buf))
2393: irc |= endloop;
1.190 schwarze 2394: break;
2395: case '\0':
2396: ++ep;
2397: break;
2398: default:
2399: ep += 2;
2400: break;
1.70 schwarze 2401: }
1.50 schwarze 2402: }
1.247 schwarze 2403: *offs = rr;
2404: return irc;
2405: }
1.190 schwarze 2406:
1.247 schwarze 2407: /*
2408: * Parse and process a request or macro line in conditional scope.
2409: */
2410: static int
2411: roff_cond_sub(ROFF_ARGS)
2412: {
2413: struct roffnode *bl;
1.258 schwarze 2414: int irc, rr, spos;
1.247 schwarze 2415: enum roff_tok t;
2416:
2417: rr = 0; /* If arguments follow "\}", skip them. */
2418: irc = roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
1.258 schwarze 2419: spos = pos;
1.240 schwarze 2420: t = roff_parse(r, buf->buf, &pos, ln, ppos);
2421:
1.190 schwarze 2422: /*
1.258 schwarze 2423: * Handle requests and macros if the conditional evaluated
2424: * to true or if they are structurally required.
2425: * The .break request is always handled specially.
1.190 schwarze 2426: */
2427:
1.236 schwarze 2428: if (t == ROFF_break) {
2429: if (irc & ROFF_LOOPMASK)
2430: irc = ROFF_IGN | ROFF_LOOPEXIT;
2431: else if (rr) {
2432: for (bl = r->last; bl != NULL; bl = bl->parent) {
2433: bl->rule = 0;
2434: if (bl->tok == ROFF_while)
2435: break;
2436: }
2437: }
1.258 schwarze 2438: } else if (rr || (t < TOKEN_NONE && roffs[t].flags & ROFFMAC_STRUCT)) {
2439: irc |= roff_req_or_macro(r, t, buf, ln, spos, pos, offs);
1.255 schwarze 2440: if (irc & ROFF_WHILE)
2441: irc &= ~(ROFF_LOOPCONT | ROFF_LOOPEXIT);
1.258 schwarze 2442: }
1.212 schwarze 2443: return irc;
1.2 schwarze 2444: }
2445:
1.247 schwarze 2446: /*
2447: * Parse and process a text line in conditional scope.
2448: */
1.212 schwarze 2449: static int
1.2 schwarze 2450: roff_cond_text(ROFF_ARGS)
2451: {
1.247 schwarze 2452: int irc, rr;
1.215 schwarze 2453:
1.247 schwarze 2454: rr = 1; /* If arguments follow "\}", preserve them. */
2455: irc = roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
1.212 schwarze 2456: if (rr)
2457: irc |= ROFF_CONT;
2458: return irc;
1.2 schwarze 2459: }
2460:
1.138 schwarze 2461: /* --- handling of numeric and conditional expressions -------------------- */
2462:
1.77 schwarze 2463: /*
2464: * Parse a single signed integer number. Stop at the first non-digit.
2465: * If there is at least one digit, return success and advance the
2466: * parse point, else return failure and let the parse point unchanged.
2467: * Ignore overflows, treat them just like the C language.
2468: */
1.56 schwarze 2469: static int
1.133 schwarze 2470: roff_getnum(const char *v, int *pos, int *res, int flags)
1.56 schwarze 2471: {
1.133 schwarze 2472: int myres, scaled, n, p;
1.79 schwarze 2473:
2474: if (NULL == res)
2475: res = &myres;
1.56 schwarze 2476:
2477: p = *pos;
2478: n = v[p] == '-';
1.133 schwarze 2479: if (n || v[p] == '+')
1.56 schwarze 2480: p++;
2481:
1.133 schwarze 2482: if (flags & ROFFNUM_WHITE)
2483: while (isspace((unsigned char)v[p]))
2484: p++;
2485:
1.56 schwarze 2486: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.77 schwarze 2487: *res = 10 * *res + v[p] - '0';
1.56 schwarze 2488: if (p == *pos + n)
2489: return 0;
2490:
2491: if (n)
2492: *res = -*res;
2493:
1.126 schwarze 2494: /* Each number may be followed by one optional scaling unit. */
2495:
2496: switch (v[p]) {
2497: case 'f':
1.133 schwarze 2498: scaled = *res * 65536;
1.126 schwarze 2499: break;
2500: case 'i':
1.133 schwarze 2501: scaled = *res * 240;
1.126 schwarze 2502: break;
2503: case 'c':
1.133 schwarze 2504: scaled = *res * 240 / 2.54;
1.126 schwarze 2505: break;
2506: case 'v':
2507: case 'P':
1.133 schwarze 2508: scaled = *res * 40;
1.126 schwarze 2509: break;
2510: case 'm':
2511: case 'n':
1.133 schwarze 2512: scaled = *res * 24;
1.126 schwarze 2513: break;
2514: case 'p':
1.133 schwarze 2515: scaled = *res * 10 / 3;
1.126 schwarze 2516: break;
2517: case 'u':
1.133 schwarze 2518: scaled = *res;
1.126 schwarze 2519: break;
2520: case 'M':
1.133 schwarze 2521: scaled = *res * 6 / 25;
1.126 schwarze 2522: break;
2523: default:
1.133 schwarze 2524: scaled = *res;
1.126 schwarze 2525: p--;
2526: break;
2527: }
1.133 schwarze 2528: if (flags & ROFFNUM_SCALE)
2529: *res = scaled;
1.126 schwarze 2530:
2531: *pos = p + 1;
1.149 schwarze 2532: return 1;
1.56 schwarze 2533: }
2534:
1.71 schwarze 2535: /*
2536: * Evaluate a string comparison condition.
2537: * The first character is the delimiter.
2538: * Succeed if the string up to its second occurrence
2539: * matches the string up to its third occurence.
2540: * Advance the cursor after the third occurrence
2541: * or lacking that, to the end of the line.
2542: */
2543: static int
2544: roff_evalstrcond(const char *v, int *pos)
2545: {
2546: const char *s1, *s2, *s3;
2547: int match;
2548:
2549: match = 0;
2550: s1 = v + *pos; /* initial delimiter */
2551: s2 = s1 + 1; /* for scanning the first string */
2552: s3 = strchr(s2, *s1); /* for scanning the second string */
2553:
2554: if (NULL == s3) /* found no middle delimiter */
2555: goto out;
2556:
2557: while ('\0' != *++s3) {
2558: if (*s2 != *s3) { /* mismatch */
2559: s3 = strchr(s3, *s1);
2560: break;
2561: }
2562: if (*s3 == *s1) { /* found the final delimiter */
2563: match = 1;
2564: break;
2565: }
2566: s2++;
2567: }
2568:
2569: out:
2570: if (NULL == s3)
2571: s3 = strchr(s2, '\0');
1.114 schwarze 2572: else if (*s3 != '\0')
1.71 schwarze 2573: s3++;
2574: *pos = s3 - v;
1.149 schwarze 2575: return match;
1.71 schwarze 2576: }
2577:
1.77 schwarze 2578: /*
2579: * Evaluate an optionally negated single character, numerical,
2580: * or string condition.
2581: */
1.71 schwarze 2582: static int
1.143 schwarze 2583: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.5 schwarze 2584: {
1.208 schwarze 2585: const char *start, *end;
2586: char *cp, *name;
2587: size_t sz;
2588: int deftype, len, number, savepos, istrue, wanttrue;
1.5 schwarze 2589:
1.71 schwarze 2590: if ('!' == v[*pos]) {
2591: wanttrue = 0;
2592: (*pos)++;
2593: } else
2594: wanttrue = 1;
2595:
1.5 schwarze 2596: switch (v[*pos]) {
1.112 schwarze 2597: case '\0':
1.149 schwarze 2598: return 0;
1.80 schwarze 2599: case 'n':
2600: case 'o':
1.5 schwarze 2601: (*pos)++;
1.149 schwarze 2602: return wanttrue;
1.80 schwarze 2603: case 'e':
2604: case 't':
1.111 schwarze 2605: case 'v':
1.5 schwarze 2606: (*pos)++;
1.149 schwarze 2607: return !wanttrue;
1.208 schwarze 2608: case 'c':
2609: do {
2610: (*pos)++;
2611: } while (v[*pos] == ' ');
2612:
2613: /*
2614: * Quirk for groff compatibility:
2615: * The horizontal tab is neither available nor unavailable.
2616: */
2617:
2618: if (v[*pos] == '\t') {
2619: (*pos)++;
2620: return 0;
2621: }
2622:
2623: /* Printable ASCII characters are available. */
2624:
2625: if (v[*pos] != '\\') {
2626: (*pos)++;
2627: return wanttrue;
2628: }
2629:
2630: end = v + ++*pos;
2631: switch (mandoc_escape(&end, &start, &len)) {
2632: case ESCAPE_SPECIAL:
2633: istrue = mchars_spec2cp(start, len) != -1;
2634: break;
2635: case ESCAPE_UNICODE:
2636: istrue = 1;
2637: break;
2638: case ESCAPE_NUMBERED:
2639: istrue = mchars_num2char(start, len) != -1;
2640: break;
2641: default:
2642: istrue = !wanttrue;
2643: break;
2644: }
2645: *pos = end - v;
2646: return istrue == wanttrue;
1.182 schwarze 2647: case 'd':
1.143 schwarze 2648: case 'r':
1.182 schwarze 2649: cp = v + *pos + 1;
2650: while (*cp == ' ')
2651: cp++;
2652: name = cp;
2653: sz = roff_getname(r, &cp, ln, cp - v);
1.187 schwarze 2654: if (sz == 0)
2655: istrue = 0;
2656: else if (v[*pos] == 'r')
2657: istrue = roff_hasregn(r, name, sz);
2658: else {
2659: deftype = ROFFDEF_ANY;
2660: roff_getstrn(r, name, sz, &deftype);
2661: istrue = !!deftype;
2662: }
1.235 schwarze 2663: *pos = (name + sz) - v;
1.182 schwarze 2664: return istrue == wanttrue;
1.5 schwarze 2665: default:
2666: break;
2667: }
2668:
1.113 schwarze 2669: savepos = *pos;
1.133 schwarze 2670: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.149 schwarze 2671: return (number > 0) == wanttrue;
1.113 schwarze 2672: else if (*pos == savepos)
1.149 schwarze 2673: return roff_evalstrcond(v, pos) == wanttrue;
1.77 schwarze 2674: else
1.149 schwarze 2675: return 0;
1.5 schwarze 2676: }
2677:
1.212 schwarze 2678: static int
1.21 schwarze 2679: roff_line_ignore(ROFF_ARGS)
1.6 schwarze 2680: {
1.30 schwarze 2681:
1.149 schwarze 2682: return ROFF_IGN;
1.21 schwarze 2683: }
2684:
1.212 schwarze 2685: static int
1.123 schwarze 2686: roff_insec(ROFF_ARGS)
2687: {
2688:
1.222 schwarze 2689: mandoc_msg(MANDOCERR_REQ_INSEC, ln, ppos, "%s", roff_name[tok]);
1.149 schwarze 2690: return ROFF_IGN;
1.123 schwarze 2691: }
2692:
1.212 schwarze 2693: static int
1.123 schwarze 2694: roff_unsupp(ROFF_ARGS)
2695: {
2696:
1.222 schwarze 2697: mandoc_msg(MANDOCERR_REQ_UNSUPP, ln, ppos, "%s", roff_name[tok]);
1.149 schwarze 2698: return ROFF_IGN;
1.123 schwarze 2699: }
2700:
1.212 schwarze 2701: static int
1.2 schwarze 2702: roff_cond(ROFF_ARGS)
2703: {
1.212 schwarze 2704: int irc;
1.46 schwarze 2705:
2706: roffnode_push(r, tok, NULL, ln, ppos);
1.2 schwarze 2707:
1.80 schwarze 2708: /*
1.35 schwarze 2709: * An `.el' has no conditional body: it will consume the value
2710: * of the current rstack entry set in prior `ie' calls or
1.80 schwarze 2711: * defaults to DENY.
1.35 schwarze 2712: *
2713: * If we're not an `el', however, then evaluate the conditional.
2714: */
1.1 schwarze 2715:
1.110 schwarze 2716: r->last->rule = tok == ROFF_el ?
1.80 schwarze 2717: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.110 schwarze 2718: roff_evalcond(r, ln, buf->buf, &pos);
1.2 schwarze 2719:
1.35 schwarze 2720: /*
2721: * An if-else will put the NEGATION of the current evaluated
2722: * conditional into the stack of rules.
2723: */
2724:
1.110 schwarze 2725: if (tok == ROFF_ie) {
1.96 schwarze 2726: if (r->rstackpos + 1 == r->rstacksz) {
2727: r->rstacksz += 16;
2728: r->rstack = mandoc_reallocarray(r->rstack,
2729: r->rstacksz, sizeof(int));
1.35 schwarze 2730: }
1.71 schwarze 2731: r->rstack[++r->rstackpos] = !r->last->rule;
1.2 schwarze 2732: }
1.5 schwarze 2733:
2734: /* If the parent has false as its rule, then so do we. */
2735:
1.71 schwarze 2736: if (r->last->parent && !r->last->parent->rule)
2737: r->last->rule = 0;
1.5 schwarze 2738:
2739: /*
1.46 schwarze 2740: * Determine scope.
2741: * If there is nothing on the line after the conditional,
2742: * not even whitespace, use next-line scope.
1.212 schwarze 2743: * Except that .while does not support next-line scope.
1.5 schwarze 2744: */
1.2 schwarze 2745:
1.212 schwarze 2746: if (buf->buf[pos] == '\0' && tok != ROFF_while) {
1.46 schwarze 2747: r->last->endspan = 2;
2748: goto out;
2749: }
2750:
1.110 schwarze 2751: while (buf->buf[pos] == ' ')
1.46 schwarze 2752: pos++;
2753:
2754: /* An opening brace requests multiline scope. */
1.2 schwarze 2755:
1.110 schwarze 2756: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.2 schwarze 2757: r->last->endspan = -1;
2758: pos += 2;
1.144 schwarze 2759: while (buf->buf[pos] == ' ')
2760: pos++;
1.46 schwarze 2761: goto out;
1.80 schwarze 2762: }
1.2 schwarze 2763:
2764: /*
1.46 schwarze 2765: * Anything else following the conditional causes
2766: * single-line scope. Warn if the scope contains
2767: * nothing but trailing whitespace.
1.2 schwarze 2768: */
2769:
1.110 schwarze 2770: if (buf->buf[pos] == '\0')
1.222 schwarze 2771: mandoc_msg(MANDOCERR_COND_EMPTY,
2772: ln, ppos, "%s", roff_name[tok]);
1.2 schwarze 2773:
1.46 schwarze 2774: r->last->endspan = 1;
1.1 schwarze 2775:
1.46 schwarze 2776: out:
1.2 schwarze 2777: *offs = pos;
1.212 schwarze 2778: irc = ROFF_RERUN;
2779: if (tok == ROFF_while)
2780: irc |= ROFF_WHILE;
2781: return irc;
1.1 schwarze 2782: }
2783:
1.212 schwarze 2784: static int
1.7 schwarze 2785: roff_ds(ROFF_ARGS)
2786: {
1.85 schwarze 2787: char *string;
2788: const char *name;
2789: size_t namesz;
1.10 schwarze 2790:
1.123 schwarze 2791: /* Ignore groff compatibility mode for now. */
2792:
2793: if (tok == ROFF_ds1)
2794: tok = ROFF_ds;
2795: else if (tok == ROFF_as1)
2796: tok = ROFF_as;
2797:
1.10 schwarze 2798: /*
1.85 schwarze 2799: * The first word is the name of the string.
2800: * If it is empty or terminated by an escape sequence,
2801: * abort the `ds' request without defining anything.
1.10 schwarze 2802: */
1.7 schwarze 2803:
1.110 schwarze 2804: name = string = buf->buf + pos;
2805: if (*name == '\0')
1.149 schwarze 2806: return ROFF_IGN;
1.7 schwarze 2807:
1.85 schwarze 2808: namesz = roff_getname(r, &string, ln, pos);
1.235 schwarze 2809: switch (name[namesz]) {
2810: case '\\':
1.149 schwarze 2811: return ROFF_IGN;
1.235 schwarze 2812: case '\t':
2813: string = buf->buf + pos + namesz;
2814: break;
2815: default:
2816: break;
2817: }
1.85 schwarze 2818:
2819: /* Read past the initial double-quote, if any. */
1.110 schwarze 2820: if (*string == '"')
1.7 schwarze 2821: string++;
2822:
1.10 schwarze 2823: /* The rest is the value. */
1.85 schwarze 2824: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2825: ROFF_as == tok);
1.183 schwarze 2826: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.149 schwarze 2827: return ROFF_IGN;
1.7 schwarze 2828: }
2829:
1.77 schwarze 2830: /*
2831: * Parse a single operator, one or two characters long.
2832: * If the operator is recognized, return success and advance the
2833: * parse point, else return failure and let the parse point unchanged.
2834: */
2835: static int
2836: roff_getop(const char *v, int *pos, char *res)
2837: {
2838:
2839: *res = v[*pos];
2840:
2841: switch (*res) {
1.80 schwarze 2842: case '+':
2843: case '-':
2844: case '*':
2845: case '/':
2846: case '%':
2847: case '&':
2848: case ':':
1.77 schwarze 2849: break;
2850: case '<':
2851: switch (v[*pos + 1]) {
1.80 schwarze 2852: case '=':
1.77 schwarze 2853: *res = 'l';
2854: (*pos)++;
2855: break;
1.80 schwarze 2856: case '>':
1.77 schwarze 2857: *res = '!';
2858: (*pos)++;
2859: break;
1.80 schwarze 2860: case '?':
1.77 schwarze 2861: *res = 'i';
2862: (*pos)++;
2863: break;
2864: default:
2865: break;
2866: }
2867: break;
2868: case '>':
2869: switch (v[*pos + 1]) {
1.80 schwarze 2870: case '=':
1.77 schwarze 2871: *res = 'g';
2872: (*pos)++;
2873: break;
1.80 schwarze 2874: case '?':
1.77 schwarze 2875: *res = 'a';
2876: (*pos)++;
2877: break;
2878: default:
2879: break;
2880: }
2881: break;
2882: case '=':
2883: if ('=' == v[*pos + 1])
2884: (*pos)++;
2885: break;
2886: default:
1.149 schwarze 2887: return 0;
1.77 schwarze 2888: }
2889: (*pos)++;
2890:
1.149 schwarze 2891: return *res;
1.77 schwarze 2892: }
2893:
2894: /*
2895: * Evaluate either a parenthesized numeric expression
2896: * or a single signed integer number.
2897: */
2898: static int
1.106 schwarze 2899: roff_evalpar(struct roff *r, int ln,
1.133 schwarze 2900: const char *v, int *pos, int *res, int flags)
1.77 schwarze 2901: {
2902:
2903: if ('(' != v[*pos])
1.149 schwarze 2904: return roff_getnum(v, pos, res, flags);
1.77 schwarze 2905:
2906: (*pos)++;
1.133 schwarze 2907: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.149 schwarze 2908: return 0;
1.77 schwarze 2909:
1.79 schwarze 2910: /*
2911: * Omission of the closing parenthesis
2912: * is an error in validation mode,
2913: * but ignored in evaluation mode.
2914: */
2915:
1.77 schwarze 2916: if (')' == v[*pos])
2917: (*pos)++;
1.79 schwarze 2918: else if (NULL == res)
1.149 schwarze 2919: return 0;
1.77 schwarze 2920:
1.149 schwarze 2921: return 1;
1.77 schwarze 2922: }
2923:
2924: /*
2925: * Evaluate a complete numeric expression.
2926: * Proceed left to right, there is no concept of precedence.
2927: */
2928: static int
1.106 schwarze 2929: roff_evalnum(struct roff *r, int ln, const char *v,
1.133 schwarze 2930: int *pos, int *res, int flags)
1.77 schwarze 2931: {
2932: int mypos, operand2;
2933: char operator;
2934:
2935: if (NULL == pos) {
2936: mypos = 0;
2937: pos = &mypos;
2938: }
2939:
1.133 schwarze 2940: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2941: while (isspace((unsigned char)v[*pos]))
2942: (*pos)++;
2943:
1.133 schwarze 2944: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.149 schwarze 2945: return 0;
1.77 schwarze 2946:
2947: while (1) {
1.133 schwarze 2948: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2949: while (isspace((unsigned char)v[*pos]))
2950: (*pos)++;
2951:
2952: if ( ! roff_getop(v, pos, &operator))
2953: break;
2954:
1.133 schwarze 2955: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2956: while (isspace((unsigned char)v[*pos]))
2957: (*pos)++;
2958:
1.133 schwarze 2959: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.149 schwarze 2960: return 0;
1.77 schwarze 2961:
1.133 schwarze 2962: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2963: while (isspace((unsigned char)v[*pos]))
2964: (*pos)++;
1.79 schwarze 2965:
2966: if (NULL == res)
2967: continue;
1.77 schwarze 2968:
2969: switch (operator) {
1.80 schwarze 2970: case '+':
1.77 schwarze 2971: *res += operand2;
2972: break;
1.80 schwarze 2973: case '-':
1.77 schwarze 2974: *res -= operand2;
2975: break;
1.80 schwarze 2976: case '*':
1.77 schwarze 2977: *res *= operand2;
2978: break;
1.80 schwarze 2979: case '/':
1.116 schwarze 2980: if (operand2 == 0) {
1.106 schwarze 2981: mandoc_msg(MANDOCERR_DIVZERO,
1.222 schwarze 2982: ln, *pos, "%s", v);
1.106 schwarze 2983: *res = 0;
2984: break;
2985: }
1.77 schwarze 2986: *res /= operand2;
2987: break;
1.80 schwarze 2988: case '%':
1.116 schwarze 2989: if (operand2 == 0) {
2990: mandoc_msg(MANDOCERR_DIVZERO,
1.222 schwarze 2991: ln, *pos, "%s", v);
1.116 schwarze 2992: *res = 0;
2993: break;
2994: }
1.77 schwarze 2995: *res %= operand2;
2996: break;
1.80 schwarze 2997: case '<':
1.77 schwarze 2998: *res = *res < operand2;
2999: break;
1.80 schwarze 3000: case '>':
1.77 schwarze 3001: *res = *res > operand2;
3002: break;
1.80 schwarze 3003: case 'l':
1.77 schwarze 3004: *res = *res <= operand2;
3005: break;
1.80 schwarze 3006: case 'g':
1.77 schwarze 3007: *res = *res >= operand2;
3008: break;
1.80 schwarze 3009: case '=':
1.77 schwarze 3010: *res = *res == operand2;
3011: break;
1.80 schwarze 3012: case '!':
1.77 schwarze 3013: *res = *res != operand2;
3014: break;
1.80 schwarze 3015: case '&':
1.77 schwarze 3016: *res = *res && operand2;
3017: break;
1.80 schwarze 3018: case ':':
1.77 schwarze 3019: *res = *res || operand2;
3020: break;
1.80 schwarze 3021: case 'i':
1.77 schwarze 3022: if (operand2 < *res)
3023: *res = operand2;
3024: break;
1.80 schwarze 3025: case 'a':
1.77 schwarze 3026: if (operand2 > *res)
3027: *res = operand2;
3028: break;
3029: default:
3030: abort();
3031: }
3032: }
1.149 schwarze 3033: return 1;
1.77 schwarze 3034: }
3035:
1.138 schwarze 3036: /* --- register management ------------------------------------------------ */
3037:
1.52 schwarze 3038: void
1.60 schwarze 3039: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.41 schwarze 3040: {
1.199 schwarze 3041: roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
1.198 schwarze 3042: }
3043:
3044: static void
3045: roff_setregn(struct roff *r, const char *name, size_t len,
1.199 schwarze 3046: int val, char sign, int step)
1.198 schwarze 3047: {
1.52 schwarze 3048: struct roffreg *reg;
3049:
3050: /* Search for an existing register with the same name. */
3051: reg = r->regtab;
3052:
1.198 schwarze 3053: while (reg != NULL && (reg->key.sz != len ||
3054: strncmp(reg->key.p, name, len) != 0))
1.52 schwarze 3055: reg = reg->next;
1.41 schwarze 3056:
1.52 schwarze 3057: if (NULL == reg) {
3058: /* Create a new register. */
3059: reg = mandoc_malloc(sizeof(struct roffreg));
1.198 schwarze 3060: reg->key.p = mandoc_strndup(name, len);
3061: reg->key.sz = len;
1.60 schwarze 3062: reg->val = 0;
1.199 schwarze 3063: reg->step = 0;
1.52 schwarze 3064: reg->next = r->regtab;
3065: r->regtab = reg;
3066: }
3067:
1.60 schwarze 3068: if ('+' == sign)
3069: reg->val += val;
3070: else if ('-' == sign)
3071: reg->val -= val;
3072: else
3073: reg->val = val;
1.199 schwarze 3074: if (step != INT_MIN)
3075: reg->step = step;
1.41 schwarze 3076: }
3077:
1.65 schwarze 3078: /*
3079: * Handle some predefined read-only number registers.
3080: * For now, return -1 if the requested register is not predefined;
3081: * in case a predefined read-only register having the value -1
3082: * were to turn up, another special value would have to be chosen.
3083: */
3084: static int
1.145 schwarze 3085: roff_getregro(const struct roff *r, const char *name)
1.65 schwarze 3086: {
3087:
3088: switch (*name) {
1.145 schwarze 3089: case '$': /* Number of arguments of the last macro evaluated. */
1.211 schwarze 3090: return r->mstackpos < 0 ? 0 : r->mstack[r->mstackpos].argc;
1.80 schwarze 3091: case 'A': /* ASCII approximation mode is always off. */
1.149 schwarze 3092: return 0;
1.80 schwarze 3093: case 'g': /* Groff compatibility mode is always on. */
1.149 schwarze 3094: return 1;
1.80 schwarze 3095: case 'H': /* Fixed horizontal resolution. */
1.149 schwarze 3096: return 24;
1.80 schwarze 3097: case 'j': /* Always adjust left margin only. */
1.149 schwarze 3098: return 0;
1.80 schwarze 3099: case 'T': /* Some output device is always defined. */
1.149 schwarze 3100: return 1;
1.80 schwarze 3101: case 'V': /* Fixed vertical resolution. */
1.149 schwarze 3102: return 40;
1.65 schwarze 3103: default:
1.149 schwarze 3104: return -1;
1.65 schwarze 3105: }
3106: }
3107:
1.53 schwarze 3108: int
1.198 schwarze 3109: roff_getreg(struct roff *r, const char *name)
1.41 schwarze 3110: {
1.199 schwarze 3111: return roff_getregn(r, name, strlen(name), '\0');
1.53 schwarze 3112: }
3113:
3114: static int
1.199 schwarze 3115: roff_getregn(struct roff *r, const char *name, size_t len, char sign)
1.53 schwarze 3116: {
3117: struct roffreg *reg;
1.65 schwarze 3118: int val;
3119:
3120: if ('.' == name[0] && 2 == len) {
1.145 schwarze 3121: val = roff_getregro(r, name + 1);
1.65 schwarze 3122: if (-1 != val)
1.149 schwarze 3123: return val;
1.65 schwarze 3124: }
1.53 schwarze 3125:
1.199 schwarze 3126: for (reg = r->regtab; reg; reg = reg->next) {
1.53 schwarze 3127: if (len == reg->key.sz &&
1.199 schwarze 3128: 0 == strncmp(name, reg->key.p, len)) {
3129: switch (sign) {
3130: case '+':
3131: reg->val += reg->step;
3132: break;
3133: case '-':
3134: reg->val -= reg->step;
3135: break;
3136: default:
3137: break;
3138: }
1.149 schwarze 3139: return reg->val;
1.199 schwarze 3140: }
3141: }
1.143 schwarze 3142:
1.199 schwarze 3143: roff_setregn(r, name, len, 0, '\0', INT_MIN);
1.149 schwarze 3144: return 0;
1.143 schwarze 3145: }
3146:
3147: static int
3148: roff_hasregn(const struct roff *r, const char *name, size_t len)
3149: {
3150: struct roffreg *reg;
3151: int val;
3152:
3153: if ('.' == name[0] && 2 == len) {
1.145 schwarze 3154: val = roff_getregro(r, name + 1);
1.143 schwarze 3155: if (-1 != val)
1.149 schwarze 3156: return 1;
1.143 schwarze 3157: }
3158:
3159: for (reg = r->regtab; reg; reg = reg->next)
3160: if (len == reg->key.sz &&
3161: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 3162: return 1;
1.41 schwarze 3163:
1.149 schwarze 3164: return 0;
1.41 schwarze 3165: }
3166:
1.52 schwarze 3167: static void
3168: roff_freereg(struct roffreg *reg)
1.41 schwarze 3169: {
1.52 schwarze 3170: struct roffreg *old_reg;
1.41 schwarze 3171:
1.52 schwarze 3172: while (NULL != reg) {
3173: free(reg->key.p);
3174: old_reg = reg;
3175: reg = reg->next;
3176: free(old_reg);
3177: }
1.41 schwarze 3178: }
1.7 schwarze 3179:
1.212 schwarze 3180: static int
1.6 schwarze 3181: roff_nr(ROFF_ARGS)
1.1 schwarze 3182: {
1.199 schwarze 3183: char *key, *val, *step;
1.85 schwarze 3184: size_t keysz;
1.199 schwarze 3185: int iv, is, len;
1.60 schwarze 3186: char sign;
1.6 schwarze 3187:
1.110 schwarze 3188: key = val = buf->buf + pos;
3189: if (*key == '\0')
1.149 schwarze 3190: return ROFF_IGN;
1.85 schwarze 3191:
3192: keysz = roff_getname(r, &val, ln, pos);
1.235 schwarze 3193: if (key[keysz] == '\\' || key[keysz] == '\t')
1.149 schwarze 3194: return ROFF_IGN;
1.6 schwarze 3195:
1.60 schwarze 3196: sign = *val;
1.110 schwarze 3197: if (sign == '+' || sign == '-')
1.60 schwarze 3198: val++;
3199:
1.199 schwarze 3200: len = 0;
3201: if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
3202: return ROFF_IGN;
3203:
3204: step = val + len;
3205: while (isspace((unsigned char)*step))
3206: step++;
3207: if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)
3208: is = INT_MIN;
1.1 schwarze 3209:
1.199 schwarze 3210: roff_setregn(r, key, keysz, iv, sign, is);
1.149 schwarze 3211: return ROFF_IGN;
1.76 schwarze 3212: }
3213:
1.212 schwarze 3214: static int
1.76 schwarze 3215: roff_rr(ROFF_ARGS)
3216: {
3217: struct roffreg *reg, **prev;
1.85 schwarze 3218: char *name, *cp;
3219: size_t namesz;
1.76 schwarze 3220:
1.110 schwarze 3221: name = cp = buf->buf + pos;
3222: if (*name == '\0')
1.149 schwarze 3223: return ROFF_IGN;
1.85 schwarze 3224: namesz = roff_getname(r, &cp, ln, pos);
3225: name[namesz] = '\0';
1.76 schwarze 3226:
3227: prev = &r->regtab;
3228: while (1) {
3229: reg = *prev;
1.110 schwarze 3230: if (reg == NULL || !strcmp(name, reg->key.p))
1.76 schwarze 3231: break;
3232: prev = ®->next;
3233: }
1.110 schwarze 3234: if (reg != NULL) {
1.76 schwarze 3235: *prev = reg->next;
3236: free(reg->key.p);
3237: free(reg);
3238: }
1.149 schwarze 3239: return ROFF_IGN;
1.29 schwarze 3240: }
3241:
1.138 schwarze 3242: /* --- handler functions for roff requests -------------------------------- */
3243:
1.212 schwarze 3244: static int
1.29 schwarze 3245: roff_rm(ROFF_ARGS)
3246: {
3247: const char *name;
3248: char *cp;
1.85 schwarze 3249: size_t namesz;
1.29 schwarze 3250:
1.110 schwarze 3251: cp = buf->buf + pos;
3252: while (*cp != '\0') {
1.85 schwarze 3253: name = cp;
1.110 schwarze 3254: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.85 schwarze 3255: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.183 schwarze 3256: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.235 schwarze 3257: if (name[namesz] == '\\' || name[namesz] == '\t')
1.85 schwarze 3258: break;
1.29 schwarze 3259: }
1.149 schwarze 3260: return ROFF_IGN;
1.51 schwarze 3261: }
3262:
1.212 schwarze 3263: static int
1.51 schwarze 3264: roff_it(ROFF_ARGS)
3265: {
3266: int iv;
3267:
3268: /* Parse the number of lines. */
1.133 schwarze 3269:
3270: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.222 schwarze 3271: mandoc_msg(MANDOCERR_IT_NONUM,
3272: ln, ppos, "%s", buf->buf + 1);
1.149 schwarze 3273: return ROFF_IGN;
1.51 schwarze 3274: }
3275:
1.134 schwarze 3276: while (isspace((unsigned char)buf->buf[pos]))
3277: pos++;
3278:
3279: /*
3280: * Arm the input line trap.
3281: * Special-casing "an-trap" is an ugly workaround to cope
3282: * with DocBook stupidly fiddling with man(7) internals.
3283: */
1.133 schwarze 3284:
1.51 schwarze 3285: roffit_lines = iv;
1.134 schwarze 3286: roffit_macro = mandoc_strdup(iv != 1 ||
3287: strcmp(buf->buf + pos, "an-trap") ?
3288: buf->buf + pos : "br");
1.149 schwarze 3289: return ROFF_IGN;
1.47 schwarze 3290: }
3291:
1.212 schwarze 3292: static int
1.47 schwarze 3293: roff_Dd(ROFF_ARGS)
3294: {
1.187 schwarze 3295: int mask;
3296: enum roff_tok t, te;
1.99 schwarze 3297:
1.187 schwarze 3298: switch (tok) {
3299: case ROFF_Dd:
3300: tok = MDOC_Dd;
3301: te = MDOC_MAX;
3302: if (r->format == 0)
3303: r->format = MPARSE_MDOC;
3304: mask = MPARSE_MDOC | MPARSE_QUICK;
3305: break;
3306: case ROFF_TH:
3307: tok = MAN_TH;
3308: te = MAN_MAX;
3309: if (r->format == 0)
3310: r->format = MPARSE_MAN;
3311: mask = MPARSE_QUICK;
3312: break;
3313: default:
3314: abort();
3315: }
3316: if ((r->options & mask) == 0)
3317: for (t = tok; t < te; t++)
3318: roff_setstr(r, roff_name[t], NULL, 0);
1.149 schwarze 3319: return ROFF_CONT;
1.14 schwarze 3320: }
3321:
1.212 schwarze 3322: static int
1.27 schwarze 3323: roff_TE(ROFF_ARGS)
3324: {
1.233 schwarze 3325: r->man->flags &= ~ROFF_NONOFILL;
1.193 schwarze 3326: if (r->tbl == NULL) {
1.222 schwarze 3327: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "TE");
1.193 schwarze 3328: return ROFF_IGN;
3329: }
1.218 schwarze 3330: if (tbl_end(r->tbl, 0) == 0) {
1.193 schwarze 3331: r->tbl = NULL;
1.130 schwarze 3332: free(buf->buf);
3333: buf->buf = mandoc_strdup(".sp");
3334: buf->sz = 4;
1.201 schwarze 3335: *offs = 0;
1.149 schwarze 3336: return ROFF_REPARSE;
1.130 schwarze 3337: }
1.193 schwarze 3338: r->tbl = NULL;
1.149 schwarze 3339: return ROFF_IGN;
1.27 schwarze 3340: }
3341:
1.212 schwarze 3342: static int
1.27 schwarze 3343: roff_T_(ROFF_ARGS)
3344: {
3345:
3346: if (NULL == r->tbl)
1.222 schwarze 3347: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "T&");
1.27 schwarze 3348: else
1.168 schwarze 3349: tbl_restart(ln, ppos, r->tbl);
1.27 schwarze 3350:
1.149 schwarze 3351: return ROFF_IGN;
1.27 schwarze 3352: }
3353:
1.102 schwarze 3354: /*
3355: * Handle in-line equation delimiters.
3356: */
1.212 schwarze 3357: static int
1.110 schwarze 3358: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.41 schwarze 3359: {
1.105 schwarze 3360: char *cp1, *cp2;
3361: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.41 schwarze 3362:
1.102 schwarze 3363: /*
3364: * Outside equations, look for an opening delimiter.
3365: * If we are inside an equation, we already know it is
3366: * in-line, or this function wouldn't have been called;
3367: * so look for a closing delimiter.
3368: */
3369:
1.110 schwarze 3370: cp1 = buf->buf + pos;
1.102 schwarze 3371: cp2 = strchr(cp1, r->eqn == NULL ?
3372: r->last_eqn->odelim : r->last_eqn->cdelim);
3373: if (cp2 == NULL)
1.149 schwarze 3374: return ROFF_CONT;
1.102 schwarze 3375:
1.105 schwarze 3376: *cp2++ = '\0';
3377: bef_pr = bef_nl = aft_nl = aft_pr = "";
3378:
3379: /* Handle preceding text, protecting whitespace. */
3380:
1.110 schwarze 3381: if (*buf->buf != '\0') {
1.105 schwarze 3382: if (r->eqn == NULL)
3383: bef_pr = "\\&";
3384: bef_nl = "\n";
3385: }
3386:
3387: /*
3388: * Prepare replacing the delimiter with an equation macro
3389: * and drop leading white space from the equation.
3390: */
1.102 schwarze 3391:
1.105 schwarze 3392: if (r->eqn == NULL) {
3393: while (*cp2 == ' ')
3394: cp2++;
3395: mac = ".EQ";
3396: } else
3397: mac = ".EN";
3398:
3399: /* Handle following text, protecting whitespace. */
3400:
3401: if (*cp2 != '\0') {
3402: aft_nl = "\n";
3403: if (r->eqn != NULL)
3404: aft_pr = "\\&";
3405: }
3406:
3407: /* Do the actual replacement. */
3408:
1.110 schwarze 3409: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.105 schwarze 3410: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.110 schwarze 3411: free(buf->buf);
3412: buf->buf = cp1;
1.102 schwarze 3413:
3414: /* Toggle the in-line state of the eqn subsystem. */
3415:
3416: r->eqn_inline = r->eqn == NULL;
1.149 schwarze 3417: return ROFF_REPARSE;
1.41 schwarze 3418: }
3419:
1.212 schwarze 3420: static int
1.107 schwarze 3421: roff_EQ(ROFF_ARGS)
1.32 schwarze 3422: {
1.191 schwarze 3423: struct roff_node *n;
3424:
1.228 schwarze 3425: if (r->man->meta.macroset == MACROSET_MAN)
1.194 schwarze 3426: man_breakscope(r->man, ROFF_EQ);
1.191 schwarze 3427: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
3428: if (ln > r->man->last->line)
3429: n->flags |= NODE_LINE;
1.220 schwarze 3430: n->eqn = eqn_box_new();
1.191 schwarze 3431: roff_node_append(r->man, n);
3432: r->man->next = ROFF_NEXT_SIBLING;
1.32 schwarze 3433:
1.110 schwarze 3434: assert(r->eqn == NULL);
1.191 schwarze 3435: if (r->last_eqn == NULL)
1.223 schwarze 3436: r->last_eqn = eqn_alloc();
1.191 schwarze 3437: else
3438: eqn_reset(r->last_eqn);
3439: r->eqn = r->last_eqn;
3440: r->eqn->node = n;
1.41 schwarze 3441:
1.110 schwarze 3442: if (buf->buf[pos] != '\0')
1.222 schwarze 3443: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.110 schwarze 3444: ".EQ %s", buf->buf + pos);
1.41 schwarze 3445:
1.149 schwarze 3446: return ROFF_IGN;
1.32 schwarze 3447: }
3448:
1.212 schwarze 3449: static int
1.32 schwarze 3450: roff_EN(ROFF_ARGS)
3451: {
1.191 schwarze 3452: if (r->eqn != NULL) {
3453: eqn_parse(r->eqn);
3454: r->eqn = NULL;
3455: } else
1.222 schwarze 3456: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "EN");
1.191 schwarze 3457: if (buf->buf[pos] != '\0')
1.222 schwarze 3458: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.191 schwarze 3459: "EN %s", buf->buf + pos);
1.149 schwarze 3460: return ROFF_IGN;
1.32 schwarze 3461: }
3462:
1.212 schwarze 3463: static int
1.27 schwarze 3464: roff_TS(ROFF_ARGS)
3465: {
1.193 schwarze 3466: if (r->tbl != NULL) {
1.222 schwarze 3467: mandoc_msg(MANDOCERR_BLK_BROKEN, ln, ppos, "TS breaks TS");
1.218 schwarze 3468: tbl_end(r->tbl, 0);
1.27 schwarze 3469: }
1.233 schwarze 3470: r->man->flags |= ROFF_NONOFILL;
1.223 schwarze 3471: r->tbl = tbl_alloc(ppos, ln, r->last_tbl);
1.218 schwarze 3472: if (r->last_tbl == NULL)
1.193 schwarze 3473: r->first_tbl = r->tbl;
3474: r->last_tbl = r->tbl;
1.169 schwarze 3475: return ROFF_IGN;
3476: }
3477:
1.212 schwarze 3478: static int
1.230 schwarze 3479: roff_noarg(ROFF_ARGS)
3480: {
3481: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3482: man_breakscope(r->man, tok);
3483: if (tok == ROFF_brp)
3484: tok = ROFF_br;
3485: roff_elem_alloc(r->man, ln, ppos, tok);
3486: if (buf->buf[pos] != '\0')
3487: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
3488: "%s %s", roff_name[tok], buf->buf + pos);
3489: if (tok == ROFF_nf)
3490: r->man->flags |= ROFF_NOFILL;
3491: else if (tok == ROFF_fi)
3492: r->man->flags &= ~ROFF_NOFILL;
3493: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3494: r->man->next = ROFF_NEXT_SIBLING;
3495: return ROFF_IGN;
3496: }
3497:
3498: static int
1.169 schwarze 3499: roff_onearg(ROFF_ARGS)
3500: {
3501: struct roff_node *n;
3502: char *cp;
1.177 schwarze 3503: int npos;
1.169 schwarze 3504:
1.174 schwarze 3505: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.192 schwarze 3506: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
3507: tok == ROFF_ti))
1.174 schwarze 3508: man_breakscope(r->man, tok);
3509:
1.181 schwarze 3510: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.177 schwarze 3511: r->man->last = roffce_node;
3512: r->man->next = ROFF_NEXT_SIBLING;
3513: }
3514:
1.169 schwarze 3515: roff_elem_alloc(r->man, ln, ppos, tok);
3516: n = r->man->last;
3517:
3518: cp = buf->buf + pos;
3519: if (*cp != '\0') {
3520: while (*cp != '\0' && *cp != ' ')
3521: cp++;
3522: while (*cp == ' ')
3523: *cp++ = '\0';
3524: if (*cp != '\0')
1.222 schwarze 3525: mandoc_msg(MANDOCERR_ARG_EXCESS,
3526: ln, (int)(cp - buf->buf),
1.169 schwarze 3527: "%s ... %s", roff_name[tok], cp);
3528: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.172 schwarze 3529: }
3530:
1.181 schwarze 3531: if (tok == ROFF_ce || tok == ROFF_rj) {
3532: if (r->man->last->type == ROFFT_ELEM) {
1.177 schwarze 3533: roff_word_alloc(r->man, ln, pos, "1");
3534: r->man->last->flags |= NODE_NOSRC;
3535: }
3536: npos = 0;
3537: if (roff_evalnum(r, ln, r->man->last->string, &npos,
3538: &roffce_lines, 0) == 0) {
1.222 schwarze 3539: mandoc_msg(MANDOCERR_CE_NONUM,
3540: ln, pos, "ce %s", buf->buf + pos);
1.177 schwarze 3541: roffce_lines = 1;
3542: }
3543: if (roffce_lines < 1) {
3544: r->man->last = r->man->last->parent;
3545: roffce_node = NULL;
3546: roffce_lines = 0;
3547: } else
3548: roffce_node = r->man->last->parent;
3549: } else {
3550: n->flags |= NODE_VALID | NODE_ENDED;
3551: r->man->last = n;
3552: }
3553: n->flags |= NODE_LINE;
1.172 schwarze 3554: r->man->next = ROFF_NEXT_SIBLING;
3555: return ROFF_IGN;
3556: }
3557:
1.212 schwarze 3558: static int
1.172 schwarze 3559: roff_manyarg(ROFF_ARGS)
3560: {
3561: struct roff_node *n;
3562: char *sp, *ep;
3563:
3564: roff_elem_alloc(r->man, ln, ppos, tok);
3565: n = r->man->last;
3566:
3567: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3568: while (*ep != '\0' && *ep != ' ')
3569: ep++;
3570: while (*ep == ' ')
3571: *ep++ = '\0';
3572: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.169 schwarze 3573: }
3574:
3575: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3576: r->man->last = n;
3577: r->man->next = ROFF_NEXT_SIBLING;
1.149 schwarze 3578: return ROFF_IGN;
1.123 schwarze 3579: }
3580:
1.212 schwarze 3581: static int
1.183 schwarze 3582: roff_als(ROFF_ARGS)
3583: {
3584: char *oldn, *newn, *end, *value;
3585: size_t oldsz, newsz, valsz;
3586:
3587: newn = oldn = buf->buf + pos;
3588: if (*newn == '\0')
3589: return ROFF_IGN;
3590:
3591: newsz = roff_getname(r, &oldn, ln, pos);
1.235 schwarze 3592: if (newn[newsz] == '\\' || newn[newsz] == '\t' || *oldn == '\0')
1.183 schwarze 3593: return ROFF_IGN;
3594:
3595: end = oldn;
3596: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3597: if (oldsz == 0)
3598: return ROFF_IGN;
3599:
1.210 schwarze 3600: valsz = mandoc_asprintf(&value, ".%.*s \\$@\\\"\n",
1.187 schwarze 3601: (int)oldsz, oldn);
1.183 schwarze 3602: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3603: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3604: free(value);
1.236 schwarze 3605: return ROFF_IGN;
3606: }
3607:
3608: /*
3609: * The .break request only makes sense inside conditionals,
3610: * and that case is already handled in roff_cond_sub().
3611: */
3612: static int
3613: roff_break(ROFF_ARGS)
3614: {
3615: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, pos, "break");
1.168 schwarze 3616: return ROFF_IGN;
1.27 schwarze 3617: }
3618:
1.212 schwarze 3619: static int
1.48 schwarze 3620: roff_cc(ROFF_ARGS)
3621: {
3622: const char *p;
3623:
1.110 schwarze 3624: p = buf->buf + pos;
1.48 schwarze 3625:
1.110 schwarze 3626: if (*p == '\0' || (r->control = *p++) == '.')
1.175 schwarze 3627: r->control = '\0';
1.48 schwarze 3628:
1.110 schwarze 3629: if (*p != '\0')
1.222 schwarze 3630: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.132 schwarze 3631: ln, p - buf->buf, "cc ... %s", p);
1.48 schwarze 3632:
1.213 schwarze 3633: return ROFF_IGN;
3634: }
3635:
3636: static int
3637: roff_char(ROFF_ARGS)
3638: {
3639: const char *p, *kp, *vp;
3640: size_t ksz, vsz;
3641: int font;
3642:
3643: /* Parse the character to be replaced. */
3644:
3645: kp = buf->buf + pos;
3646: p = kp + 1;
3647: if (*kp == '\0' || (*kp == '\\' &&
3648: mandoc_escape(&p, NULL, NULL) != ESCAPE_SPECIAL) ||
3649: (*p != ' ' && *p != '\0')) {
1.222 schwarze 3650: mandoc_msg(MANDOCERR_CHAR_ARG, ln, pos, "char %s", kp);
1.213 schwarze 3651: return ROFF_IGN;
3652: }
3653: ksz = p - kp;
3654: while (*p == ' ')
3655: p++;
3656:
3657: /*
3658: * If the replacement string contains a font escape sequence,
3659: * we have to restore the font at the end.
3660: */
3661:
3662: vp = p;
3663: vsz = strlen(p);
3664: font = 0;
3665: while (*p != '\0') {
3666: if (*p++ != '\\')
3667: continue;
3668: switch (mandoc_escape(&p, NULL, NULL)) {
3669: case ESCAPE_FONT:
3670: case ESCAPE_FONTROMAN:
3671: case ESCAPE_FONTITALIC:
3672: case ESCAPE_FONTBOLD:
3673: case ESCAPE_FONTBI:
1.250 schwarze 3674: case ESCAPE_FONTCR:
3675: case ESCAPE_FONTCB:
3676: case ESCAPE_FONTCI:
1.213 schwarze 3677: case ESCAPE_FONTPREV:
3678: font++;
3679: break;
3680: default:
3681: break;
3682: }
3683: }
3684: if (font > 1)
1.222 schwarze 3685: mandoc_msg(MANDOCERR_CHAR_FONT,
3686: ln, (int)(vp - buf->buf), "%s", vp);
1.213 schwarze 3687:
3688: /*
3689: * Approximate the effect of .char using the .tr tables.
3690: * XXX In groff, .char and .tr interact differently.
3691: */
3692:
3693: if (ksz == 1) {
3694: if (r->xtab == NULL)
3695: r->xtab = mandoc_calloc(128, sizeof(*r->xtab));
3696: assert((unsigned int)*kp < 128);
3697: free(r->xtab[(int)*kp].p);
3698: r->xtab[(int)*kp].sz = mandoc_asprintf(&r->xtab[(int)*kp].p,
3699: "%s%s", vp, font ? "\fP" : "");
3700: } else {
3701: roff_setstrn(&r->xmbtab, kp, ksz, vp, vsz, 0);
3702: if (font)
3703: roff_setstrn(&r->xmbtab, kp, ksz, "\\fP", 3, 1);
3704: }
1.149 schwarze 3705: return ROFF_IGN;
1.48 schwarze 3706: }
3707:
1.212 schwarze 3708: static int
1.175 schwarze 3709: roff_ec(ROFF_ARGS)
3710: {
3711: const char *p;
3712:
3713: p = buf->buf + pos;
3714: if (*p == '\0')
3715: r->escape = '\\';
3716: else {
3717: r->escape = *p;
3718: if (*++p != '\0')
1.222 schwarze 3719: mandoc_msg(MANDOCERR_ARG_EXCESS, ln,
3720: (int)(p - buf->buf), "ec ... %s", p);
1.175 schwarze 3721: }
3722: return ROFF_IGN;
3723: }
3724:
1.212 schwarze 3725: static int
1.175 schwarze 3726: roff_eo(ROFF_ARGS)
3727: {
3728: r->escape = '\0';
3729: if (buf->buf[pos] != '\0')
1.222 schwarze 3730: mandoc_msg(MANDOCERR_ARG_SKIP,
1.175 schwarze 3731: ln, pos, "eo %s", buf->buf + pos);
1.256 schwarze 3732: return ROFF_IGN;
3733: }
3734:
3735: static int
3736: roff_mc(ROFF_ARGS)
3737: {
3738: struct roff_node *n;
3739: char *cp;
3740:
3741: /* Parse the first argument. */
3742:
3743: cp = buf->buf + pos;
3744: if (*cp != '\0')
3745: cp++;
3746: if (buf->buf[pos] == '\\') {
3747: switch (mandoc_escape((const char **)&cp, NULL, NULL)) {
3748: case ESCAPE_SPECIAL:
3749: case ESCAPE_UNICODE:
3750: case ESCAPE_NUMBERED:
3751: break;
3752: default:
3753: *cp = '\0';
3754: mandoc_msg(MANDOCERR_MC_ESC, ln, pos,
3755: "mc %s", buf->buf + pos);
3756: buf->buf[pos] = '\0';
3757: break;
3758: }
3759: }
3760:
3761: /* Ignore additional arguments. */
3762:
3763: while (*cp == ' ')
3764: *cp++ = '\0';
3765: if (*cp != '\0') {
3766: mandoc_msg(MANDOCERR_MC_DIST, ln, (int)(cp - buf->buf),
3767: "mc ... %s", cp);
3768: *cp = '\0';
3769: }
3770:
3771: /* Create the .mc node. */
3772:
3773: roff_elem_alloc(r->man, ln, ppos, tok);
3774: n = r->man->last;
3775: if (buf->buf[pos] != '\0')
3776: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
3777: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3778: r->man->last = n;
3779: r->man->next = ROFF_NEXT_SIBLING;
1.175 schwarze 3780: return ROFF_IGN;
1.202 schwarze 3781: }
3782:
1.212 schwarze 3783: static int
1.202 schwarze 3784: roff_nop(ROFF_ARGS)
3785: {
3786: while (buf->buf[pos] == ' ')
3787: pos++;
3788: *offs = pos;
3789: return ROFF_RERUN;
1.175 schwarze 3790: }
3791:
1.212 schwarze 3792: static int
1.42 schwarze 3793: roff_tr(ROFF_ARGS)
3794: {
3795: const char *p, *first, *second;
3796: size_t fsz, ssz;
3797: enum mandoc_esc esc;
3798:
1.110 schwarze 3799: p = buf->buf + pos;
1.42 schwarze 3800:
1.110 schwarze 3801: if (*p == '\0') {
1.222 schwarze 3802: mandoc_msg(MANDOCERR_REQ_EMPTY, ln, ppos, "tr");
1.149 schwarze 3803: return ROFF_IGN;
1.42 schwarze 3804: }
3805:
1.110 schwarze 3806: while (*p != '\0') {
1.42 schwarze 3807: fsz = ssz = 1;
3808:
3809: first = p++;
1.110 schwarze 3810: if (*first == '\\') {
1.42 schwarze 3811: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3812: if (esc == ESCAPE_ERROR) {
1.222 schwarze 3813: mandoc_msg(MANDOCERR_ESC_BAD, ln,
3814: (int)(p - buf->buf), "%s", first);
1.149 schwarze 3815: return ROFF_IGN;
1.42 schwarze 3816: }
3817: fsz = (size_t)(p - first);
3818: }
3819:
3820: second = p++;
1.110 schwarze 3821: if (*second == '\\') {
1.42 schwarze 3822: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3823: if (esc == ESCAPE_ERROR) {
1.222 schwarze 3824: mandoc_msg(MANDOCERR_ESC_BAD, ln,
3825: (int)(p - buf->buf), "%s", second);
1.149 schwarze 3826: return ROFF_IGN;
1.42 schwarze 3827: }
3828: ssz = (size_t)(p - second);
1.110 schwarze 3829: } else if (*second == '\0') {
1.222 schwarze 3830: mandoc_msg(MANDOCERR_TR_ODD, ln,
3831: (int)(first - buf->buf), "tr %s", first);
1.42 schwarze 3832: second = " ";
3833: p--;
3834: }
3835:
3836: if (fsz > 1) {
1.80 schwarze 3837: roff_setstrn(&r->xmbtab, first, fsz,
3838: second, ssz, 0);
1.42 schwarze 3839: continue;
3840: }
3841:
1.110 schwarze 3842: if (r->xtab == NULL)
1.80 schwarze 3843: r->xtab = mandoc_calloc(128,
3844: sizeof(struct roffstr));
1.42 schwarze 3845:
3846: free(r->xtab[(int)*first].p);
3847: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3848: r->xtab[(int)*first].sz = ssz;
3849: }
3850:
1.149 schwarze 3851: return ROFF_IGN;
1.42 schwarze 3852: }
3853:
1.211 schwarze 3854: /*
3855: * Implementation of the .return request.
3856: * There is no need to call roff_userret() from here.
3857: * The read module will call that after rewinding the reader stack
3858: * to the place from where the current macro was called.
3859: */
1.212 schwarze 3860: static int
1.211 schwarze 3861: roff_return(ROFF_ARGS)
3862: {
3863: if (r->mstackpos >= 0)
1.212 schwarze 3864: return ROFF_IGN | ROFF_USERRET;
1.211 schwarze 3865:
1.222 schwarze 3866: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "return");
1.211 schwarze 3867: return ROFF_IGN;
3868: }
3869:
1.212 schwarze 3870: static int
1.178 schwarze 3871: roff_rn(ROFF_ARGS)
3872: {
3873: const char *value;
3874: char *oldn, *newn, *end;
3875: size_t oldsz, newsz;
1.187 schwarze 3876: int deftype;
1.178 schwarze 3877:
3878: oldn = newn = buf->buf + pos;
3879: if (*oldn == '\0')
3880: return ROFF_IGN;
3881:
3882: oldsz = roff_getname(r, &newn, ln, pos);
1.235 schwarze 3883: if (oldn[oldsz] == '\\' || oldn[oldsz] == '\t' || *newn == '\0')
1.178 schwarze 3884: return ROFF_IGN;
3885:
3886: end = newn;
3887: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3888: if (newsz == 0)
3889: return ROFF_IGN;
3890:
1.187 schwarze 3891: deftype = ROFFDEF_ANY;
3892: value = roff_getstrn(r, oldn, oldsz, &deftype);
3893: switch (deftype) {
3894: case ROFFDEF_USER:
1.178 schwarze 3895: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3896: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3897: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.187 schwarze 3898: break;
3899: case ROFFDEF_PRE:
3900: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3901: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3902: break;
3903: case ROFFDEF_REN:
1.178 schwarze 3904: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3905: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.187 schwarze 3906: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3907: break;
3908: case ROFFDEF_STD:
1.178 schwarze 3909: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.187 schwarze 3910: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3911: break;
3912: default:
3913: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3914: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3915: break;
3916: }
1.178 schwarze 3917: return ROFF_IGN;
3918: }
3919:
1.212 schwarze 3920: static int
1.211 schwarze 3921: roff_shift(ROFF_ARGS)
3922: {
3923: struct mctx *ctx;
1.254 schwarze 3924: int argpos, levels, i;
1.211 schwarze 3925:
1.254 schwarze 3926: argpos = pos;
1.211 schwarze 3927: levels = 1;
3928: if (buf->buf[pos] != '\0' &&
3929: roff_evalnum(r, ln, buf->buf, &pos, &levels, 0) == 0) {
1.222 schwarze 3930: mandoc_msg(MANDOCERR_CE_NONUM,
1.211 schwarze 3931: ln, pos, "shift %s", buf->buf + pos);
3932: levels = 1;
3933: }
3934: if (r->mstackpos < 0) {
1.222 schwarze 3935: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "shift");
1.211 schwarze 3936: return ROFF_IGN;
3937: }
3938: ctx = r->mstack + r->mstackpos;
3939: if (levels > ctx->argc) {
1.222 schwarze 3940: mandoc_msg(MANDOCERR_SHIFT,
1.254 schwarze 3941: ln, argpos, "%d, but max is %d", levels, ctx->argc);
1.211 schwarze 3942: levels = ctx->argc;
1.254 schwarze 3943: }
3944: if (levels < 0) {
3945: mandoc_msg(MANDOCERR_ARG_NEG, ln, argpos, "shift %d", levels);
3946: levels = 0;
1.211 schwarze 3947: }
3948: if (levels == 0)
3949: return ROFF_IGN;
3950: for (i = 0; i < levels; i++)
3951: free(ctx->argv[i]);
3952: ctx->argc -= levels;
3953: for (i = 0; i < ctx->argc; i++)
3954: ctx->argv[i] = ctx->argv[i + levels];
3955: return ROFF_IGN;
3956: }
3957:
1.212 schwarze 3958: static int
1.14 schwarze 3959: roff_so(ROFF_ARGS)
3960: {
1.121 schwarze 3961: char *name, *cp;
1.15 schwarze 3962:
1.110 schwarze 3963: name = buf->buf + pos;
1.222 schwarze 3964: mandoc_msg(MANDOCERR_SO, ln, ppos, "so %s", name);
1.14 schwarze 3965:
1.22 schwarze 3966: /*
3967: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3968: * opening anything that's not in our cwd or anything beneath
3969: * it. Thus, explicitly disallow traversing up the file-system
3970: * or using absolute paths.
3971: */
3972:
1.110 schwarze 3973: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.222 schwarze 3974: mandoc_msg(MANDOCERR_SO_PATH, ln, ppos, ".so %s", name);
1.121 schwarze 3975: buf->sz = mandoc_asprintf(&cp,
3976: ".sp\nSee the file %s.\n.sp", name) + 1;
3977: free(buf->buf);
3978: buf->buf = cp;
3979: *offs = 0;
1.149 schwarze 3980: return ROFF_REPARSE;
1.14 schwarze 3981: }
3982:
3983: *offs = pos;
1.149 schwarze 3984: return ROFF_SO;
1.7 schwarze 3985: }
3986:
1.138 schwarze 3987: /* --- user defined strings and macros ------------------------------------ */
3988:
1.212 schwarze 3989: static int
1.16 schwarze 3990: roff_userdef(ROFF_ARGS)
1.12 schwarze 3991: {
1.211 schwarze 3992: struct mctx *ctx;
3993: char *arg, *ap, *dst, *src;
3994: size_t sz;
3995:
1.237 schwarze 3996: /* If the macro is empty, ignore it altogether. */
3997:
3998: if (*r->current_string == '\0')
3999: return ROFF_IGN;
4000:
1.211 schwarze 4001: /* Initialize a new macro stack context. */
4002:
4003: if (++r->mstackpos == r->mstacksz) {
4004: r->mstack = mandoc_recallocarray(r->mstack,
4005: r->mstacksz, r->mstacksz + 8, sizeof(*r->mstack));
4006: r->mstacksz += 8;
4007: }
4008: ctx = r->mstack + r->mstackpos;
4009: ctx->argc = 0;
4010:
4011: /*
4012: * Collect pointers to macro argument strings,
4013: * NUL-terminating them and escaping quotes.
4014: */
4015:
4016: src = buf->buf + pos;
4017: while (*src != '\0') {
4018: if (ctx->argc == ctx->argsz) {
4019: ctx->argsz += 8;
4020: ctx->argv = mandoc_reallocarray(ctx->argv,
4021: ctx->argsz, sizeof(*ctx->argv));
4022: }
1.227 schwarze 4023: arg = roff_getarg(r, &src, ln, &pos);
1.211 schwarze 4024: sz = 1; /* For the terminating NUL. */
4025: for (ap = arg; *ap != '\0'; ap++)
4026: sz += *ap == '"' ? 4 : 1;
4027: ctx->argv[ctx->argc++] = dst = mandoc_malloc(sz);
4028: for (ap = arg; *ap != '\0'; ap++) {
4029: if (*ap == '"') {
4030: memcpy(dst, "\\(dq", 4);
4031: dst += 4;
4032: } else
4033: *dst++ = *ap;
1.16 schwarze 4034: }
1.211 schwarze 4035: *dst = '\0';
1.227 schwarze 4036: free(arg);
1.209 schwarze 4037: }
4038:
1.211 schwarze 4039: /* Replace the macro invocation by the macro definition. */
1.135 schwarze 4040:
1.110 schwarze 4041: free(buf->buf);
1.211 schwarze 4042: buf->buf = mandoc_strdup(r->current_string);
4043: buf->sz = strlen(buf->buf) + 1;
1.120 schwarze 4044: *offs = 0;
1.16 schwarze 4045:
1.237 schwarze 4046: return buf->buf[buf->sz - 2] == '\n' ?
1.212 schwarze 4047: ROFF_REPARSE | ROFF_USERCALL : ROFF_IGN | ROFF_APPEND;
1.12 schwarze 4048: }
1.28 schwarze 4049:
1.178 schwarze 4050: /*
4051: * Calling a high-level macro that was renamed with .rn.
4052: * r->current_string has already been set up by roff_parse().
4053: */
1.212 schwarze 4054: static int
1.178 schwarze 4055: roff_renamed(ROFF_ARGS)
4056: {
4057: char *nbuf;
4058:
1.187 schwarze 4059: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
4060: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.178 schwarze 4061: free(buf->buf);
4062: buf->buf = nbuf;
1.201 schwarze 4063: *offs = 0;
1.178 schwarze 4064: return ROFF_CONT;
4065: }
4066:
1.234 schwarze 4067: /*
4068: * Measure the length in bytes of the roff identifier at *cpp
4069: * and advance the pointer to the next word.
4070: */
1.85 schwarze 4071: static size_t
1.28 schwarze 4072: roff_getname(struct roff *r, char **cpp, int ln, int pos)
4073: {
4074: char *name, *cp;
1.85 schwarze 4075: size_t namesz;
1.28 schwarze 4076:
4077: name = *cpp;
1.234 schwarze 4078: if (*name == '\0')
1.149 schwarze 4079: return 0;
1.28 schwarze 4080:
1.234 schwarze 4081: /* Advance cp to the byte after the end of the name. */
4082:
1.85 schwarze 4083: for (cp = name; 1; cp++) {
1.234 schwarze 4084: namesz = cp - name;
1.235 schwarze 4085: if (*cp == '\0')
1.85 schwarze 4086: break;
1.235 schwarze 4087: if (*cp == ' ' || *cp == '\t') {
4088: cp++;
4089: break;
4090: }
1.234 schwarze 4091: if (*cp != '\\')
1.28 schwarze 4092: continue;
1.234 schwarze 4093: if (cp[1] == '{' || cp[1] == '}')
1.88 schwarze 4094: break;
1.234 schwarze 4095: if (*++cp == '\\')
1.28 schwarze 4096: continue;
1.222 schwarze 4097: mandoc_msg(MANDOCERR_NAMESC, ln, pos,
1.97 schwarze 4098: "%.*s", (int)(cp - name + 1), name);
1.85 schwarze 4099: mandoc_escape((const char **)&cp, NULL, NULL);
4100: break;
1.28 schwarze 4101: }
4102:
4103: /* Read past spaces. */
1.234 schwarze 4104:
4105: while (*cp == ' ')
1.28 schwarze 4106: cp++;
4107:
4108: *cpp = cp;
1.149 schwarze 4109: return namesz;
1.28 schwarze 4110: }
4111:
1.16 schwarze 4112: /*
4113: * Store *string into the user-defined string called *name.
4114: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.66 schwarze 4115: * append == 0: replace mode
4116: * append == 1: single-line append mode
4117: * append == 2: multiline append mode, append '\n' after each call
1.16 schwarze 4118: */
1.8 schwarze 4119: static void
1.16 schwarze 4120: roff_setstr(struct roff *r, const char *name, const char *string,
1.66 schwarze 4121: int append)
1.7 schwarze 4122: {
1.187 schwarze 4123: size_t namesz;
1.42 schwarze 4124:
1.187 schwarze 4125: namesz = strlen(name);
4126: roff_setstrn(&r->strtab, name, namesz, string,
1.80 schwarze 4127: string ? strlen(string) : 0, append);
1.187 schwarze 4128: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.42 schwarze 4129: }
4130:
4131: static void
4132: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.66 schwarze 4133: const char *string, size_t stringsz, int append)
1.42 schwarze 4134: {
4135: struct roffkv *n;
4136: char *c;
4137: int i;
4138: size_t oldch, newch;
1.7 schwarze 4139:
1.16 schwarze 4140: /* Search for an existing string with the same name. */
1.42 schwarze 4141: n = *r;
4142:
1.84 schwarze 4143: while (n && (namesz != n->key.sz ||
4144: strncmp(n->key.p, name, namesz)))
1.7 schwarze 4145: n = n->next;
1.8 schwarze 4146:
4147: if (NULL == n) {
1.16 schwarze 4148: /* Create a new string table entry. */
1.42 schwarze 4149: n = mandoc_malloc(sizeof(struct roffkv));
4150: n->key.p = mandoc_strndup(name, namesz);
4151: n->key.sz = namesz;
4152: n->val.p = NULL;
4153: n->val.sz = 0;
4154: n->next = *r;
4155: *r = n;
1.66 schwarze 4156: } else if (0 == append) {
1.42 schwarze 4157: free(n->val.p);
4158: n->val.p = NULL;
4159: n->val.sz = 0;
1.16 schwarze 4160: }
4161:
4162: if (NULL == string)
4163: return;
4164:
4165: /*
4166: * One additional byte for the '\n' in multiline mode,
4167: * and one for the terminating '\0'.
4168: */
1.66 schwarze 4169: newch = stringsz + (1 < append ? 2u : 1u);
1.42 schwarze 4170:
4171: if (NULL == n->val.p) {
4172: n->val.p = mandoc_malloc(newch);
4173: *n->val.p = '\0';
1.16 schwarze 4174: oldch = 0;
4175: } else {
1.42 schwarze 4176: oldch = n->val.sz;
4177: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.16 schwarze 4178: }
4179:
4180: /* Skip existing content in the destination buffer. */
1.42 schwarze 4181: c = n->val.p + (int)oldch;
1.16 schwarze 4182:
4183: /* Append new content to the destination buffer. */
1.42 schwarze 4184: i = 0;
4185: while (i < (int)stringsz) {
1.16 schwarze 4186: /*
4187: * Rudimentary roff copy mode:
4188: * Handle escaped backslashes.
4189: */
1.42 schwarze 4190: if ('\\' == string[i] && '\\' == string[i + 1])
4191: i++;
4192: *c++ = string[i++];
1.16 schwarze 4193: }
1.8 schwarze 4194:
1.16 schwarze 4195: /* Append terminating bytes. */
1.66 schwarze 4196: if (1 < append)
1.16 schwarze 4197: *c++ = '\n';
1.42 schwarze 4198:
1.16 schwarze 4199: *c = '\0';
1.42 schwarze 4200: n->val.sz = (int)(c - n->val.p);
1.7 schwarze 4201: }
4202:
1.8 schwarze 4203: static const char *
1.197 schwarze 4204: roff_getstrn(struct roff *r, const char *name, size_t len,
1.187 schwarze 4205: int *deftype)
1.7 schwarze 4206: {
1.187 schwarze 4207: const struct roffkv *n;
1.197 schwarze 4208: int found, i;
1.187 schwarze 4209: enum roff_tok tok;
4210:
1.197 schwarze 4211: found = 0;
4212: for (n = r->strtab; n != NULL; n = n->next) {
4213: if (strncmp(name, n->key.p, len) != 0 ||
4214: n->key.p[len] != '\0' || n->val.p == NULL)
4215: continue;
4216: if (*deftype & ROFFDEF_USER) {
4217: *deftype = ROFFDEF_USER;
4218: return n->val.p;
4219: } else {
4220: found = 1;
4221: break;
4222: }
4223: }
4224: for (n = r->rentab; n != NULL; n = n->next) {
4225: if (strncmp(name, n->key.p, len) != 0 ||
4226: n->key.p[len] != '\0' || n->val.p == NULL)
4227: continue;
4228: if (*deftype & ROFFDEF_REN) {
4229: *deftype = ROFFDEF_REN;
4230: return n->val.p;
4231: } else {
4232: found = 1;
4233: break;
1.187 schwarze 4234: }
4235: }
1.197 schwarze 4236: for (i = 0; i < PREDEFS_MAX; i++) {
4237: if (strncmp(name, predefs[i].name, len) != 0 ||
4238: predefs[i].name[len] != '\0')
4239: continue;
4240: if (*deftype & ROFFDEF_PRE) {
4241: *deftype = ROFFDEF_PRE;
4242: return predefs[i].str;
4243: } else {
4244: found = 1;
4245: break;
1.187 schwarze 4246: }
4247: }
1.228 schwarze 4248: if (r->man->meta.macroset != MACROSET_MAN) {
1.197 schwarze 4249: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
4250: if (strncmp(name, roff_name[tok], len) != 0 ||
4251: roff_name[tok][len] != '\0')
4252: continue;
4253: if (*deftype & ROFFDEF_STD) {
4254: *deftype = ROFFDEF_STD;
4255: return NULL;
4256: } else {
4257: found = 1;
4258: break;
1.187 schwarze 4259: }
4260: }
4261: }
1.228 schwarze 4262: if (r->man->meta.macroset != MACROSET_MDOC) {
1.197 schwarze 4263: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
4264: if (strncmp(name, roff_name[tok], len) != 0 ||
4265: roff_name[tok][len] != '\0')
4266: continue;
4267: if (*deftype & ROFFDEF_STD) {
4268: *deftype = ROFFDEF_STD;
4269: return NULL;
4270: } else {
4271: found = 1;
4272: break;
1.187 schwarze 4273: }
4274: }
1.197 schwarze 4275: }
4276:
4277: if (found == 0 && *deftype != ROFFDEF_ANY) {
4278: if (*deftype & ROFFDEF_REN) {
4279: /*
4280: * This might still be a request,
4281: * so do not treat it as undefined yet.
4282: */
4283: *deftype = ROFFDEF_UNDEF;
4284: return NULL;
1.187 schwarze 4285: }
1.197 schwarze 4286:
4287: /* Using an undefined string defines it to be empty. */
4288:
4289: roff_setstrn(&r->strtab, name, len, "", 0, 0);
4290: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.187 schwarze 4291: }
1.197 schwarze 4292:
1.187 schwarze 4293: *deftype = 0;
1.149 schwarze 4294: return NULL;
1.7 schwarze 4295: }
4296:
1.8 schwarze 4297: static void
1.42 schwarze 4298: roff_freestr(struct roffkv *r)
1.7 schwarze 4299: {
1.42 schwarze 4300: struct roffkv *n, *nn;
1.7 schwarze 4301:
1.42 schwarze 4302: for (n = r; n; n = nn) {
4303: free(n->key.p);
4304: free(n->val.p);
1.7 schwarze 4305: nn = n->next;
4306: free(n);
4307: }
1.27 schwarze 4308: }
1.138 schwarze 4309:
4310: /* --- accessors and utility functions ------------------------------------ */
1.42 schwarze 4311:
4312: /*
4313: * Duplicate an input string, making the appropriate character
4314: * conversations (as stipulated by `tr') along the way.
4315: * Returns a heap-allocated string with all the replacements made.
4316: */
4317: char *
4318: roff_strdup(const struct roff *r, const char *p)
4319: {
4320: const struct roffkv *cp;
4321: char *res;
4322: const char *pp;
4323: size_t ssz, sz;
4324: enum mandoc_esc esc;
4325:
4326: if (NULL == r->xmbtab && NULL == r->xtab)
1.149 schwarze 4327: return mandoc_strdup(p);
1.42 schwarze 4328: else if ('\0' == *p)
1.149 schwarze 4329: return mandoc_strdup("");
1.42 schwarze 4330:
4331: /*
4332: * Step through each character looking for term matches
4333: * (remember that a `tr' can be invoked with an escape, which is
4334: * a glyph but the escape is multi-character).
4335: * We only do this if the character hash has been initialised
4336: * and the string is >0 length.
4337: */
4338:
4339: res = NULL;
4340: ssz = 0;
4341:
4342: while ('\0' != *p) {
1.161 schwarze 4343: assert((unsigned int)*p < 128);
4344: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.42 schwarze 4345: sz = r->xtab[(int)*p].sz;
4346: res = mandoc_realloc(res, ssz + sz + 1);
4347: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
4348: ssz += sz;
4349: p++;
4350: continue;
4351: } else if ('\\' != *p) {
4352: res = mandoc_realloc(res, ssz + 2);
4353: res[ssz++] = *p++;
4354: continue;
4355: }
4356:
4357: /* Search for term matches. */
4358: for (cp = r->xmbtab; cp; cp = cp->next)
4359: if (0 == strncmp(p, cp->key.p, cp->key.sz))
4360: break;
4361:
4362: if (NULL != cp) {
4363: /*
4364: * A match has been found.
4365: * Append the match to the array and move
4366: * forward by its keysize.
4367: */
1.80 schwarze 4368: res = mandoc_realloc(res,
4369: ssz + cp->val.sz + 1);
1.42 schwarze 4370: memcpy(res + ssz, cp->val.p, cp->val.sz);
4371: ssz += cp->val.sz;
4372: p += (int)cp->key.sz;
4373: continue;
4374: }
4375:
4376: /*
4377: * Handle escapes carefully: we need to copy
4378: * over just the escape itself, or else we might
4379: * do replacements within the escape itself.
4380: * Make sure to pass along the bogus string.
4381: */
4382: pp = p++;
4383: esc = mandoc_escape(&p, NULL, NULL);
4384: if (ESCAPE_ERROR == esc) {
4385: sz = strlen(pp);
4386: res = mandoc_realloc(res, ssz + sz + 1);
4387: memcpy(res + ssz, pp, sz);
4388: break;
4389: }
1.80 schwarze 4390: /*
4391: * We bail out on bad escapes.
1.42 schwarze 4392: * No need to warn: we already did so when
1.227 schwarze 4393: * roff_expand() was called.
1.42 schwarze 4394: */
4395: sz = (int)(p - pp);
4396: res = mandoc_realloc(res, ssz + sz + 1);
4397: memcpy(res + ssz, pp, sz);
4398: ssz += sz;
4399: }
4400:
4401: res[(int)ssz] = '\0';
1.149 schwarze 4402: return res;
1.99 schwarze 4403: }
4404:
4405: int
4406: roff_getformat(const struct roff *r)
4407: {
4408:
1.149 schwarze 4409: return r->format;
1.48 schwarze 4410: }
4411:
4412: /*
1.80 schwarze 4413: * Find out whether a line is a macro line or not.
1.48 schwarze 4414: * If it is, adjust the current position and return one; if it isn't,
4415: * return zero and don't change the current position.
4416: * If the control character has been set with `.cc', then let that grain
4417: * precedence.
4418: * This is slighly contrary to groff, where using the non-breaking
4419: * control character when `cc' has been invoked will cause the
4420: * non-breaking macro contents to be printed verbatim.
4421: */
4422: int
4423: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
4424: {
4425: int pos;
4426:
4427: pos = *ppos;
4428:
1.175 schwarze 4429: if (r->control != '\0' && cp[pos] == r->control)
1.48 schwarze 4430: pos++;
1.175 schwarze 4431: else if (r->control != '\0')
1.149 schwarze 4432: return 0;
1.48 schwarze 4433: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
4434: pos += 2;
4435: else if ('.' == cp[pos] || '\'' == cp[pos])
4436: pos++;
4437: else
1.149 schwarze 4438: return 0;
1.48 schwarze 4439:
4440: while (' ' == cp[pos] || '\t' == cp[pos])
4441: pos++;
4442:
4443: *ppos = pos;
1.149 schwarze 4444: return 1;
1.1 schwarze 4445: }
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