Annotation of src/usr.bin/mandoc/roff.c, Revision 1.251
1.251 ! schwarze 1: /* $OpenBSD: roff.c,v 1.250 2021/08/10 12:36:42 schwarze Exp $ */
1.1 schwarze 2: /*
1.244 schwarze 3: * Copyright (c) 2010-2015, 2017-2020 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);
1.230 schwarze 228: static int roff_noarg(ROFF_ARGS);
1.212 schwarze 229: static int roff_nop(ROFF_ARGS);
230: static int roff_nr(ROFF_ARGS);
231: static int roff_onearg(ROFF_ARGS);
1.166 schwarze 232: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.87 schwarze 233: int, int);
1.212 schwarze 234: static int roff_parsetext(struct roff *, struct buf *,
1.177 schwarze 235: int, int *);
1.212 schwarze 236: static int roff_renamed(ROFF_ARGS);
237: static int roff_return(ROFF_ARGS);
238: static int roff_rm(ROFF_ARGS);
239: static int roff_rn(ROFF_ARGS);
240: static int roff_rr(ROFF_ARGS);
1.198 schwarze 241: static void roff_setregn(struct roff *, const char *,
1.199 schwarze 242: size_t, int, char, int);
1.8 schwarze 243: static void roff_setstr(struct roff *,
1.16 schwarze 244: const char *, const char *, int);
1.80 schwarze 245: static void roff_setstrn(struct roffkv **, const char *,
1.42 schwarze 246: size_t, const char *, size_t, int);
1.212 schwarze 247: static int roff_shift(ROFF_ARGS);
248: static int roff_so(ROFF_ARGS);
249: static int roff_tr(ROFF_ARGS);
250: static int roff_Dd(ROFF_ARGS);
251: static int roff_TE(ROFF_ARGS);
252: static int roff_TS(ROFF_ARGS);
253: static int roff_EQ(ROFF_ARGS);
254: static int roff_EN(ROFF_ARGS);
255: static int roff_T_(ROFF_ARGS);
256: static int roff_unsupp(ROFF_ARGS);
257: static int roff_userdef(ROFF_ARGS);
1.1 schwarze 258:
1.138 schwarze 259: /* --- constant data ------------------------------------------------------ */
260:
1.133 schwarze 261: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
262: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
263:
1.166 schwarze 264: const char *__roff_name[MAN_MAX + 1] = {
1.230 schwarze 265: "br", "ce", "fi", "ft",
266: "ll", "mc", "nf",
267: "po", "rj", "sp",
1.184 schwarze 268: "ta", "ti", NULL,
1.166 schwarze 269: "ab", "ad", "af", "aln",
270: "als", "am", "am1", "ami",
271: "ami1", "as", "as1", "asciify",
272: "backtrace", "bd", "bleedat", "blm",
273: "box", "boxa", "bp", "BP",
274: "break", "breakchar", "brnl", "brp",
1.177 schwarze 275: "brpnl", "c2", "cc",
1.166 schwarze 276: "cf", "cflags", "ch", "char",
277: "chop", "class", "close", "CL",
278: "color", "composite", "continue", "cp",
279: "cropat", "cs", "cu", "da",
280: "dch", "Dd", "de", "de1",
281: "defcolor", "dei", "dei1", "device",
282: "devicem", "di", "do", "ds",
283: "ds1", "dwh", "dt", "ec",
284: "ecr", "ecs", "el", "em",
285: "EN", "eo", "EP", "EQ",
286: "errprint", "ev", "evc", "ex",
287: "fallback", "fam", "fc", "fchar",
288: "fcolor", "fdeferlig", "feature", "fkern",
289: "fl", "flig", "fp", "fps",
290: "fschar", "fspacewidth", "fspecial", "ftr",
291: "fzoom", "gcolor", "hc", "hcode",
292: "hidechar", "hla", "hlm", "hpf",
293: "hpfa", "hpfcode", "hw", "hy",
294: "hylang", "hylen", "hym", "hypp",
295: "hys", "ie", "if", "ig",
296: "index", "it", "itc", "IX",
297: "kern", "kernafter", "kernbefore", "kernpair",
298: "lc", "lc_ctype", "lds", "length",
299: "letadj", "lf", "lg", "lhang",
300: "linetabs", "lnr", "lnrf", "lpfx",
1.176 schwarze 301: "ls", "lsm", "lt",
1.166 schwarze 302: "mediasize", "minss", "mk", "mso",
303: "na", "ne", "nh", "nhychar",
304: "nm", "nn", "nop", "nr",
305: "nrf", "nroff", "ns", "nx",
306: "open", "opena", "os", "output",
307: "padj", "papersize", "pc", "pev",
308: "pi", "PI", "pl", "pm",
1.184 schwarze 309: "pn", "pnr", "ps",
1.166 schwarze 310: "psbb", "pshape", "pso", "ptr",
311: "pvs", "rchar", "rd", "recursionlimit",
1.181 schwarze 312: "return", "rfschar", "rhang",
1.166 schwarze 313: "rm", "rn", "rnn", "rr",
314: "rs", "rt", "schar", "sentchar",
315: "shc", "shift", "sizes", "so",
316: "spacewidth", "special", "spreadwarn", "ss",
317: "sty", "substring", "sv", "sy",
1.172 schwarze 318: "T&", "tc", "TE",
1.173 schwarze 319: "TH", "tkf", "tl",
1.166 schwarze 320: "tm", "tm1", "tmc", "tr",
321: "track", "transchar", "trf", "trimat",
322: "trin", "trnt", "troff", "TS",
323: "uf", "ul", "unformat", "unwatch",
324: "unwatchn", "vpt", "vs", "warn",
325: "warnscale", "watch", "watchlength", "watchn",
326: "wh", "while", "write", "writec",
327: "writem", "xflag", ".", NULL,
1.178 schwarze 328: NULL, "text",
1.166 schwarze 329: "Dd", "Dt", "Os", "Sh",
330: "Ss", "Pp", "D1", "Dl",
331: "Bd", "Ed", "Bl", "El",
332: "It", "Ad", "An", "Ap",
333: "Ar", "Cd", "Cm", "Dv",
334: "Er", "Ev", "Ex", "Fa",
335: "Fd", "Fl", "Fn", "Ft",
336: "Ic", "In", "Li", "Nd",
337: "Nm", "Op", "Ot", "Pa",
338: "Rv", "St", "Va", "Vt",
339: "Xr", "%A", "%B", "%D",
340: "%I", "%J", "%N", "%O",
341: "%P", "%R", "%T", "%V",
342: "Ac", "Ao", "Aq", "At",
343: "Bc", "Bf", "Bo", "Bq",
344: "Bsx", "Bx", "Db", "Dc",
345: "Do", "Dq", "Ec", "Ef",
346: "Em", "Eo", "Fx", "Ms",
347: "No", "Ns", "Nx", "Ox",
348: "Pc", "Pf", "Po", "Pq",
349: "Qc", "Ql", "Qo", "Qq",
350: "Re", "Rs", "Sc", "So",
351: "Sq", "Sm", "Sx", "Sy",
352: "Tn", "Ux", "Xc", "Xo",
353: "Fo", "Fc", "Oo", "Oc",
354: "Bk", "Ek", "Bt", "Hf",
355: "Fr", "Ud", "Lb", "Lp",
356: "Lk", "Mt", "Brq", "Bro",
357: "Brc", "%C", "Es", "En",
1.171 schwarze 358: "Dx", "%Q", "%U", "Ta",
1.241 schwarze 359: "Tg", NULL,
1.166 schwarze 360: "TH", "SH", "SS", "TP",
1.204 schwarze 361: "TQ",
1.166 schwarze 362: "LP", "PP", "P", "IP",
363: "HP", "SM", "SB", "BI",
364: "IB", "BR", "RB", "R",
365: "B", "I", "IR", "RI",
366: "RE", "RS", "DT", "UC",
1.169 schwarze 367: "PD", "AT", "in",
1.205 schwarze 368: "SY", "YS", "OP",
369: "EX", "EE", "UR",
1.189 bentley 370: "UE", "MT", "ME", NULL
1.166 schwarze 371: };
372: const char *const *roff_name = __roff_name;
373:
374: static struct roffmac roffs[TOKEN_NONE] = {
1.230 schwarze 375: { roff_noarg, NULL, NULL, 0 }, /* br */
1.177 schwarze 376: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.230 schwarze 377: { roff_noarg, NULL, NULL, 0 }, /* fi */
1.169 schwarze 378: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.170 schwarze 379: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.176 schwarze 380: { roff_onearg, NULL, NULL, 0 }, /* mc */
1.230 schwarze 381: { roff_noarg, NULL, NULL, 0 }, /* nf */
1.184 schwarze 382: { roff_onearg, NULL, NULL, 0 }, /* po */
1.181 schwarze 383: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.171 schwarze 384: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.172 schwarze 385: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.173 schwarze 386: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.168 schwarze 387: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.167 schwarze 388: { roff_unsupp, NULL, NULL, 0 }, /* ab */
389: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
390: { roff_line_ignore, NULL, NULL, 0 }, /* af */
391: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.183 schwarze 392: { roff_als, NULL, NULL, 0 }, /* als */
1.167 schwarze 393: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
394: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
395: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
396: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
397: { roff_ds, NULL, NULL, 0 }, /* as */
398: { roff_ds, NULL, NULL, 0 }, /* as1 */
399: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
400: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
401: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
402: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
403: { roff_unsupp, NULL, NULL, 0 }, /* blm */
404: { roff_unsupp, NULL, NULL, 0 }, /* box */
405: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
406: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
407: { roff_unsupp, NULL, NULL, 0 }, /* BP */
1.236 schwarze 408: { roff_break, NULL, NULL, 0 }, /* break */
1.167 schwarze 409: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
410: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.230 schwarze 411: { roff_noarg, NULL, NULL, 0 }, /* brp */
1.167 schwarze 412: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
413: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
414: { roff_cc, NULL, NULL, 0 }, /* cc */
415: { roff_insec, NULL, NULL, 0 }, /* cf */
416: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
417: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
1.213 schwarze 418: { roff_char, NULL, NULL, 0 }, /* char */
1.167 schwarze 419: { roff_unsupp, NULL, NULL, 0 }, /* chop */
420: { roff_line_ignore, NULL, NULL, 0 }, /* class */
421: { roff_insec, NULL, NULL, 0 }, /* close */
422: { roff_unsupp, NULL, NULL, 0 }, /* CL */
423: { roff_line_ignore, NULL, NULL, 0 }, /* color */
424: { roff_unsupp, NULL, NULL, 0 }, /* composite */
425: { roff_unsupp, NULL, NULL, 0 }, /* continue */
426: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
427: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
428: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
429: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
430: { roff_unsupp, NULL, NULL, 0 }, /* da */
431: { roff_unsupp, NULL, NULL, 0 }, /* dch */
432: { roff_Dd, NULL, NULL, 0 }, /* Dd */
433: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
434: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
435: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
436: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
437: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
438: { roff_unsupp, NULL, NULL, 0 }, /* device */
439: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
440: { roff_unsupp, NULL, NULL, 0 }, /* di */
441: { roff_unsupp, NULL, NULL, 0 }, /* do */
442: { roff_ds, NULL, NULL, 0 }, /* ds */
443: { roff_ds, NULL, NULL, 0 }, /* ds1 */
444: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
445: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.175 schwarze 446: { roff_ec, NULL, NULL, 0 }, /* ec */
1.167 schwarze 447: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
448: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
449: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
450: { roff_unsupp, NULL, NULL, 0 }, /* em */
451: { roff_EN, NULL, NULL, 0 }, /* EN */
1.175 schwarze 452: { roff_eo, NULL, NULL, 0 }, /* eo */
1.167 schwarze 453: { roff_unsupp, NULL, NULL, 0 }, /* EP */
454: { roff_EQ, NULL, NULL, 0 }, /* EQ */
455: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
456: { roff_unsupp, NULL, NULL, 0 }, /* ev */
457: { roff_unsupp, NULL, NULL, 0 }, /* evc */
458: { roff_unsupp, NULL, NULL, 0 }, /* ex */
459: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
460: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
461: { roff_unsupp, NULL, NULL, 0 }, /* fc */
462: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
463: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
464: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
465: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
466: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
467: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
468: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
469: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
470: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
471: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
472: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
473: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
474: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
475: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
476: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
477: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
478: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
479: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
480: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
481: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
482: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
483: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
484: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
485: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
486: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
487: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
488: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
489: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
490: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
491: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
492: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
493: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
494: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
495: { roff_unsupp, NULL, NULL, 0 }, /* index */
496: { roff_it, NULL, NULL, 0 }, /* it */
497: { roff_unsupp, NULL, NULL, 0 }, /* itc */
498: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
499: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
500: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
501: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
502: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
503: { roff_unsupp, NULL, NULL, 0 }, /* lc */
504: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
505: { roff_unsupp, NULL, NULL, 0 }, /* lds */
506: { roff_unsupp, NULL, NULL, 0 }, /* length */
507: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
508: { roff_insec, NULL, NULL, 0 }, /* lf */
509: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
510: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
511: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
512: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
513: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
514: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
515: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
516: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
517: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
518: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
519: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
520: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
521: { roff_insec, NULL, NULL, 0 }, /* mso */
522: { roff_line_ignore, NULL, NULL, 0 }, /* na */
523: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
524: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
525: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
526: { roff_unsupp, NULL, NULL, 0 }, /* nm */
527: { roff_unsupp, NULL, NULL, 0 }, /* nn */
1.202 schwarze 528: { roff_nop, NULL, NULL, 0 }, /* nop */
1.167 schwarze 529: { roff_nr, NULL, NULL, 0 }, /* nr */
530: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
531: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
532: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
533: { roff_insec, NULL, NULL, 0 }, /* nx */
534: { roff_insec, NULL, NULL, 0 }, /* open */
535: { roff_insec, NULL, NULL, 0 }, /* opena */
536: { roff_line_ignore, NULL, NULL, 0 }, /* os */
537: { roff_unsupp, NULL, NULL, 0 }, /* output */
538: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
539: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
540: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
541: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
542: { roff_insec, NULL, NULL, 0 }, /* pi */
543: { roff_unsupp, NULL, NULL, 0 }, /* PI */
544: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
545: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
546: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
547: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
548: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
549: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
550: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
551: { roff_insec, NULL, NULL, 0 }, /* pso */
552: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
553: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
554: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
555: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
556: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
1.211 schwarze 557: { roff_return, NULL, NULL, 0 }, /* return */
1.167 schwarze 558: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
559: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
560: { roff_rm, NULL, NULL, 0 }, /* rm */
1.178 schwarze 561: { roff_rn, NULL, NULL, 0 }, /* rn */
1.167 schwarze 562: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
563: { roff_rr, NULL, NULL, 0 }, /* rr */
564: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
565: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
566: { roff_unsupp, NULL, NULL, 0 }, /* schar */
567: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
568: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
1.211 schwarze 569: { roff_shift, NULL, NULL, 0 }, /* shift */
1.167 schwarze 570: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
571: { roff_so, NULL, NULL, 0 }, /* so */
572: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
573: { roff_line_ignore, NULL, NULL, 0 }, /* special */
574: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
575: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
576: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
577: { roff_unsupp, NULL, NULL, 0 }, /* substring */
578: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
579: { roff_insec, NULL, NULL, 0 }, /* sy */
580: { roff_T_, NULL, NULL, 0 }, /* T& */
581: { roff_unsupp, NULL, NULL, 0 }, /* tc */
582: { roff_TE, NULL, NULL, 0 }, /* TE */
1.187 schwarze 583: { roff_Dd, NULL, NULL, 0 }, /* TH */
1.167 schwarze 584: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
585: { roff_unsupp, NULL, NULL, 0 }, /* tl */
586: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
587: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
588: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
589: { roff_tr, NULL, NULL, 0 }, /* tr */
590: { roff_line_ignore, NULL, NULL, 0 }, /* track */
591: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
592: { roff_insec, NULL, NULL, 0 }, /* trf */
593: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
594: { roff_unsupp, NULL, NULL, 0 }, /* trin */
595: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
596: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
597: { roff_TS, NULL, NULL, 0 }, /* TS */
598: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
599: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
600: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
601: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
602: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
603: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
604: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
605: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
606: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
607: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
608: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
609: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
610: { roff_unsupp, NULL, NULL, 0 }, /* wh */
1.212 schwarze 611: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /*while*/
1.167 schwarze 612: { roff_insec, NULL, NULL, 0 }, /* write */
613: { roff_insec, NULL, NULL, 0 }, /* writec */
614: { roff_insec, NULL, NULL, 0 }, /* writem */
615: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
616: { roff_cblock, NULL, NULL, 0 }, /* . */
1.178 schwarze 617: { roff_renamed, NULL, NULL, 0 },
1.167 schwarze 618: { roff_userdef, NULL, NULL, 0 }
1.1 schwarze 619: };
620:
1.37 schwarze 621: /* Array of injected predefined strings. */
622: #define PREDEFS_MAX 38
623: static const struct predef predefs[PREDEFS_MAX] = {
624: #include "predefs.in"
625: };
626:
1.177 schwarze 627: static int roffce_lines; /* number of input lines to center */
628: static struct roff_node *roffce_node; /* active request */
1.51 schwarze 629: static int roffit_lines; /* number of lines to delay */
630: static char *roffit_macro; /* nil-terminated macro line */
631:
1.80 schwarze 632:
1.138 schwarze 633: /* --- request table ------------------------------------------------------ */
634:
1.167 schwarze 635: struct ohash *
636: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.3 schwarze 637: {
1.167 schwarze 638: struct ohash *htab;
639: struct roffreq *req;
640: enum roff_tok tok;
641: size_t sz;
642: unsigned int slot;
1.3 schwarze 643:
1.167 schwarze 644: htab = mandoc_malloc(sizeof(*htab));
645: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.3 schwarze 646:
1.167 schwarze 647: for (tok = mintok; tok < maxtok; tok++) {
1.168 schwarze 648: if (roff_name[tok] == NULL)
649: continue;
1.167 schwarze 650: sz = strlen(roff_name[tok]);
651: req = mandoc_malloc(sizeof(*req) + sz + 1);
652: req->tok = tok;
653: memcpy(req->name, roff_name[tok], sz + 1);
654: slot = ohash_qlookup(htab, req->name);
655: ohash_insert(htab, slot, req);
1.3 schwarze 656: }
1.167 schwarze 657: return htab;
1.3 schwarze 658: }
659:
1.167 schwarze 660: void
661: roffhash_free(struct ohash *htab)
1.1 schwarze 662: {
1.167 schwarze 663: struct roffreq *req;
664: unsigned int slot;
1.1 schwarze 665:
1.167 schwarze 666: if (htab == NULL)
667: return;
668: for (req = ohash_first(htab, &slot); req != NULL;
669: req = ohash_next(htab, &slot))
670: free(req);
671: ohash_delete(htab);
672: free(htab);
673: }
674:
675: enum roff_tok
676: roffhash_find(struct ohash *htab, const char *name, size_t sz)
677: {
678: struct roffreq *req;
679: const char *end;
680:
681: if (sz) {
682: end = name + sz;
683: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
684: } else
685: req = ohash_find(htab, ohash_qlookup(htab, name));
686: return req == NULL ? TOKEN_NONE : req->tok;
1.1 schwarze 687: }
688:
1.138 schwarze 689: /* --- stack of request blocks -------------------------------------------- */
690:
1.1 schwarze 691: /*
692: * Pop the current node off of the stack of roff instructions currently
1.236 schwarze 693: * pending. Return 1 if it is a loop or 0 otherwise.
1.1 schwarze 694: */
1.212 schwarze 695: static int
1.1 schwarze 696: roffnode_pop(struct roff *r)
697: {
698: struct roffnode *p;
1.212 schwarze 699: int inloop;
1.1 schwarze 700:
1.80 schwarze 701: p = r->last;
1.212 schwarze 702: inloop = p->tok == ROFF_while;
703: r->last = p->parent;
1.16 schwarze 704: free(p->name);
705: free(p->end);
1.1 schwarze 706: free(p);
1.212 schwarze 707: return inloop;
1.1 schwarze 708: }
709:
710: /*
711: * Push a roff node onto the instruction stack. This must later be
712: * removed with roffnode_pop().
713: */
1.11 schwarze 714: static void
1.166 schwarze 715: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.16 schwarze 716: int line, int col)
1.1 schwarze 717: {
718: struct roffnode *p;
719:
1.11 schwarze 720: p = mandoc_calloc(1, sizeof(struct roffnode));
1.1 schwarze 721: p->tok = tok;
1.16 schwarze 722: if (name)
723: p->name = mandoc_strdup(name);
1.1 schwarze 724: p->parent = r->last;
725: p->line = line;
726: p->col = col;
1.71 schwarze 727: p->rule = p->parent ? p->parent->rule : 0;
1.1 schwarze 728:
729: r->last = p;
730: }
731:
1.138 schwarze 732: /* --- roff parser state data management ---------------------------------- */
733:
1.1 schwarze 734: static void
735: roff_free1(struct roff *r)
736: {
1.42 schwarze 737: int i;
1.27 schwarze 738:
1.218 schwarze 739: tbl_free(r->first_tbl);
1.27 schwarze 740: r->first_tbl = r->last_tbl = r->tbl = NULL;
1.1 schwarze 741:
1.219 schwarze 742: eqn_free(r->last_eqn);
1.191 schwarze 743: r->last_eqn = r->eqn = NULL;
1.32 schwarze 744:
1.211 schwarze 745: while (r->mstackpos >= 0)
746: roff_userret(r);
747:
1.1 schwarze 748: while (r->last)
749: roffnode_pop(r);
1.27 schwarze 750:
1.96 schwarze 751: free (r->rstack);
752: r->rstack = NULL;
753: r->rstacksz = 0;
754: r->rstackpos = -1;
755:
756: roff_freereg(r->regtab);
757: r->regtab = NULL;
758:
1.42 schwarze 759: roff_freestr(r->strtab);
1.178 schwarze 760: roff_freestr(r->rentab);
1.42 schwarze 761: roff_freestr(r->xmbtab);
1.178 schwarze 762: r->strtab = r->rentab = r->xmbtab = NULL;
1.42 schwarze 763:
764: if (r->xtab)
765: for (i = 0; i < 128; i++)
766: free(r->xtab[i].p);
767: free(r->xtab);
768: r->xtab = NULL;
1.1 schwarze 769: }
770:
771: void
772: roff_reset(struct roff *r)
773: {
774: roff_free1(r);
1.239 schwarze 775: r->options |= MPARSE_COMMENT;
1.99 schwarze 776: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.175 schwarze 777: r->control = '\0';
778: r->escape = '\\';
1.179 schwarze 779: roffce_lines = 0;
780: roffce_node = NULL;
781: roffit_lines = 0;
782: roffit_macro = NULL;
1.1 schwarze 783: }
784:
785: void
786: roff_free(struct roff *r)
787: {
1.238 schwarze 788: int i;
1.211 schwarze 789:
1.1 schwarze 790: roff_free1(r);
1.211 schwarze 791: for (i = 0; i < r->mstacksz; i++)
792: free(r->mstack[i].argv);
793: free(r->mstack);
1.167 schwarze 794: roffhash_free(r->reqtab);
1.1 schwarze 795: free(r);
796: }
797:
798: struct roff *
1.223 schwarze 799: roff_alloc(int options)
1.1 schwarze 800: {
801: struct roff *r;
802:
1.11 schwarze 803: r = mandoc_calloc(1, sizeof(struct roff));
1.200 schwarze 804: r->reqtab = roffhash_alloc(0, ROFF_RENAMED);
1.239 schwarze 805: r->options = options | MPARSE_COMMENT;
1.99 schwarze 806: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.211 schwarze 807: r->mstackpos = -1;
1.2 schwarze 808: r->rstackpos = -1;
1.175 schwarze 809: r->escape = '\\';
1.149 schwarze 810: return r;
1.137 schwarze 811: }
812:
1.138 schwarze 813: /* --- syntax tree state data management ---------------------------------- */
814:
1.137 schwarze 815: static void
816: roff_man_free1(struct roff_man *man)
817: {
1.228 schwarze 818: if (man->meta.first != NULL)
819: roff_node_delete(man, man->meta.first);
1.137 schwarze 820: free(man->meta.msec);
821: free(man->meta.vol);
822: free(man->meta.os);
823: free(man->meta.arch);
824: free(man->meta.title);
825: free(man->meta.name);
826: free(man->meta.date);
1.228 schwarze 827: free(man->meta.sodest);
1.137 schwarze 828: }
829:
1.229 schwarze 830: void
831: roff_state_reset(struct roff_man *man)
832: {
833: man->last = man->meta.first;
834: man->last_es = NULL;
835: man->flags = 0;
836: man->lastsec = man->lastnamed = SEC_NONE;
837: man->next = ROFF_NEXT_CHILD;
838: roff_setreg(man->roff, "nS", 0, '=');
839: }
840:
1.137 schwarze 841: static void
842: roff_man_alloc1(struct roff_man *man)
843: {
844: memset(&man->meta, 0, sizeof(man->meta));
1.228 schwarze 845: man->meta.first = mandoc_calloc(1, sizeof(*man->meta.first));
846: man->meta.first->type = ROFFT_ROOT;
847: man->meta.macroset = MACROSET_NONE;
1.229 schwarze 848: roff_state_reset(man);
1.137 schwarze 849: }
850:
851: void
852: roff_man_reset(struct roff_man *man)
853: {
854: roff_man_free1(man);
855: roff_man_alloc1(man);
856: }
857:
858: void
859: roff_man_free(struct roff_man *man)
860: {
861: roff_man_free1(man);
862: free(man);
863: }
864:
865: struct roff_man *
1.223 schwarze 866: roff_man_alloc(struct roff *roff, const char *os_s, int quick)
1.137 schwarze 867: {
868: struct roff_man *man;
869:
870: man = mandoc_calloc(1, sizeof(*man));
871: man->roff = roff;
1.188 schwarze 872: man->os_s = os_s;
1.137 schwarze 873: man->quick = quick;
874: roff_man_alloc1(man);
1.168 schwarze 875: roff->man = man;
1.149 schwarze 876: return man;
1.1 schwarze 877: }
878:
1.138 schwarze 879: /* --- syntax tree handling ----------------------------------------------- */
880:
881: struct roff_node *
882: roff_node_alloc(struct roff_man *man, int line, int pos,
883: enum roff_type type, int tok)
884: {
885: struct roff_node *n;
886:
887: n = mandoc_calloc(1, sizeof(*n));
888: n->line = line;
889: n->pos = pos;
890: n->tok = tok;
891: n->type = type;
892: n->sec = man->lastsec;
893:
894: if (man->flags & MDOC_SYNOPSIS)
1.157 schwarze 895: n->flags |= NODE_SYNPRETTY;
1.138 schwarze 896: else
1.157 schwarze 897: n->flags &= ~NODE_SYNPRETTY;
1.232 schwarze 898: if ((man->flags & (ROFF_NOFILL | ROFF_NONOFILL)) == ROFF_NOFILL)
1.231 schwarze 899: n->flags |= NODE_NOFILL;
900: else
901: n->flags &= ~NODE_NOFILL;
1.138 schwarze 902: if (man->flags & MDOC_NEWLINE)
1.157 schwarze 903: n->flags |= NODE_LINE;
1.138 schwarze 904: man->flags &= ~MDOC_NEWLINE;
905:
1.149 schwarze 906: return n;
1.138 schwarze 907: }
908:
909: void
910: roff_node_append(struct roff_man *man, struct roff_node *n)
911: {
912:
913: switch (man->next) {
914: case ROFF_NEXT_SIBLING:
1.153 schwarze 915: if (man->last->next != NULL) {
916: n->next = man->last->next;
917: man->last->next->prev = n;
918: } else
919: man->last->parent->last = n;
1.138 schwarze 920: man->last->next = n;
921: n->prev = man->last;
922: n->parent = man->last->parent;
923: break;
924: case ROFF_NEXT_CHILD:
1.159 schwarze 925: if (man->last->child != NULL) {
926: n->next = man->last->child;
927: man->last->child->prev = n;
928: } else
929: man->last->last = n;
1.138 schwarze 930: man->last->child = n;
931: n->parent = man->last;
932: break;
933: default:
934: abort();
935: }
1.154 schwarze 936: man->last = n;
1.138 schwarze 937:
938: switch (n->type) {
939: case ROFFT_HEAD:
940: n->parent->head = n;
941: break;
942: case ROFFT_BODY:
1.154 schwarze 943: if (n->end != ENDBODY_NOT)
944: return;
1.138 schwarze 945: n->parent->body = n;
946: break;
947: case ROFFT_TAIL:
948: n->parent->tail = n;
949: break;
950: default:
1.154 schwarze 951: return;
1.138 schwarze 952: }
1.154 schwarze 953:
954: /*
955: * Copy over the normalised-data pointer of our parent. Not
956: * everybody has one, but copying a null pointer is fine.
957: */
958:
959: n->norm = n->parent->norm;
960: assert(n->parent->type == ROFFT_BLOCK);
1.138 schwarze 961: }
962:
1.139 schwarze 963: void
964: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
965: {
966: struct roff_node *n;
967:
968: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
969: n->string = roff_strdup(man->roff, word);
970: roff_node_append(man, n);
1.158 schwarze 971: n->flags |= NODE_VALID | NODE_ENDED;
1.139 schwarze 972: man->next = ROFF_NEXT_SIBLING;
973: }
974:
975: void
976: roff_word_append(struct roff_man *man, const char *word)
977: {
978: struct roff_node *n;
979: char *addstr, *newstr;
980:
981: n = man->last;
982: addstr = roff_strdup(man->roff, word);
983: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
984: free(addstr);
985: free(n->string);
986: n->string = newstr;
987: man->next = ROFF_NEXT_SIBLING;
1.140 schwarze 988: }
989:
990: void
991: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
992: {
993: struct roff_node *n;
994:
995: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
996: roff_node_append(man, n);
997: man->next = ROFF_NEXT_CHILD;
998: }
999:
1000: struct roff_node *
1001: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
1002: {
1003: struct roff_node *n;
1004:
1005: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
1006: roff_node_append(man, n);
1007: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 1008: return n;
1.139 schwarze 1009: }
1010:
1.138 schwarze 1011: struct roff_node *
1012: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
1013: {
1014: struct roff_node *n;
1015:
1016: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
1017: roff_node_append(man, n);
1018: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 1019: return n;
1.138 schwarze 1020: }
1021:
1022: struct roff_node *
1023: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1024: {
1025: struct roff_node *n;
1026:
1027: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1028: roff_node_append(man, n);
1029: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 1030: return n;
1.139 schwarze 1031: }
1032:
1.193 schwarze 1033: static void
1.218 schwarze 1034: roff_addtbl(struct roff_man *man, int line, struct tbl_node *tbl)
1.139 schwarze 1035: {
1036: struct roff_node *n;
1.218 schwarze 1037: struct tbl_span *span;
1.139 schwarze 1038:
1.228 schwarze 1039: if (man->meta.macroset == MACROSET_MAN)
1.174 schwarze 1040: man_breakscope(man, ROFF_TS);
1.193 schwarze 1041: while ((span = tbl_span(tbl)) != NULL) {
1.218 schwarze 1042: n = roff_node_alloc(man, line, 0, ROFFT_TBL, TOKEN_NONE);
1.193 schwarze 1043: n->span = span;
1044: roff_node_append(man, n);
1045: n->flags |= NODE_VALID | NODE_ENDED;
1046: man->next = ROFF_NEXT_SIBLING;
1047: }
1.138 schwarze 1048: }
1049:
1050: void
1051: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1052: {
1053:
1054: /* Adjust siblings. */
1055:
1056: if (n->prev)
1057: n->prev->next = n->next;
1058: if (n->next)
1059: n->next->prev = n->prev;
1060:
1061: /* Adjust parent. */
1062:
1063: if (n->parent != NULL) {
1064: if (n->parent->child == n)
1065: n->parent->child = n->next;
1066: if (n->parent->last == n)
1067: n->parent->last = n->prev;
1068: }
1069:
1070: /* Adjust parse point. */
1071:
1072: if (man == NULL)
1073: return;
1074: if (man->last == n) {
1075: if (n->prev == NULL) {
1076: man->last = n->parent;
1077: man->next = ROFF_NEXT_CHILD;
1078: } else {
1079: man->last = n->prev;
1080: man->next = ROFF_NEXT_SIBLING;
1081: }
1082: }
1.228 schwarze 1083: if (man->meta.first == n)
1084: man->meta.first = NULL;
1.216 schwarze 1085: }
1086:
1087: void
1088: roff_node_relink(struct roff_man *man, struct roff_node *n)
1089: {
1090: roff_node_unlink(man, n);
1091: n->prev = n->next = NULL;
1092: roff_node_append(man, n);
1.138 schwarze 1093: }
1094:
1095: void
1096: roff_node_free(struct roff_node *n)
1097: {
1098:
1099: if (n->args != NULL)
1100: mdoc_argv_free(n->args);
1101: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1102: free(n->norm);
1.219 schwarze 1103: eqn_box_free(n->eqn);
1.138 schwarze 1104: free(n->string);
1.246 schwarze 1105: free(n->tag);
1.138 schwarze 1106: free(n);
1107: }
1108:
1109: void
1110: roff_node_delete(struct roff_man *man, struct roff_node *n)
1111: {
1112:
1113: while (n->child != NULL)
1114: roff_node_delete(man, n->child);
1115: roff_node_unlink(man, n);
1116: roff_node_free(n);
1.242 schwarze 1117: }
1118:
1119: int
1120: roff_node_transparent(struct roff_node *n)
1121: {
1122: if (n == NULL)
1123: return 0;
1124: if (n->type == ROFFT_COMMENT || n->flags & NODE_NOPRT)
1125: return 1;
1.245 schwarze 1126: return roff_tok_transparent(n->tok);
1127: }
1128:
1129: int
1130: roff_tok_transparent(enum roff_tok tok)
1131: {
1132: switch (tok) {
1.242 schwarze 1133: case ROFF_ft:
1134: case ROFF_ll:
1135: case ROFF_mc:
1136: case ROFF_po:
1137: case ROFF_ta:
1138: case MDOC_Db:
1139: case MDOC_Es:
1140: case MDOC_Sm:
1141: case MDOC_Tg:
1142: case MAN_DT:
1143: case MAN_UC:
1144: case MAN_PD:
1145: case MAN_AT:
1146: return 1;
1147: default:
1148: return 0;
1149: }
1150: }
1151:
1152: struct roff_node *
1153: roff_node_child(struct roff_node *n)
1154: {
1155: for (n = n->child; roff_node_transparent(n); n = n->next)
1156: continue;
1157: return n;
1158: }
1159:
1160: struct roff_node *
1161: roff_node_prev(struct roff_node *n)
1162: {
1163: do {
1164: n = n->prev;
1165: } while (roff_node_transparent(n));
1166: return n;
1167: }
1168:
1169: struct roff_node *
1170: roff_node_next(struct roff_node *n)
1171: {
1172: do {
1173: n = n->next;
1174: } while (roff_node_transparent(n));
1175: return n;
1.141 schwarze 1176: }
1177:
1178: void
1179: deroff(char **dest, const struct roff_node *n)
1180: {
1181: char *cp;
1182: size_t sz;
1183:
1.243 schwarze 1184: if (n->string == NULL) {
1.141 schwarze 1185: for (n = n->child; n != NULL; n = n->next)
1186: deroff(dest, n);
1187: return;
1188: }
1189:
1.160 schwarze 1190: /* Skip leading whitespace. */
1.141 schwarze 1191:
1.160 schwarze 1192: for (cp = n->string; *cp != '\0'; cp++) {
1.161 schwarze 1193: if (cp[0] == '\\' && cp[1] != '\0' &&
1194: strchr(" %&0^|~", cp[1]) != NULL)
1.141 schwarze 1195: cp++;
1.160 schwarze 1196: else if ( ! isspace((unsigned char)*cp))
1.141 schwarze 1197: break;
1198: }
1199:
1.161 schwarze 1200: /* Skip trailing backslash. */
1201:
1202: sz = strlen(cp);
1.162 schwarze 1203: if (sz > 0 && cp[sz - 1] == '\\')
1.161 schwarze 1204: sz--;
1205:
1.141 schwarze 1206: /* Skip trailing whitespace. */
1207:
1.161 schwarze 1208: for (; sz; sz--)
1.141 schwarze 1209: if ( ! isspace((unsigned char)cp[sz-1]))
1210: break;
1211:
1212: /* Skip empty strings. */
1213:
1214: if (sz == 0)
1215: return;
1216:
1217: if (*dest == NULL) {
1218: *dest = mandoc_strndup(cp, sz);
1219: return;
1220: }
1221:
1222: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1223: free(*dest);
1224: *dest = cp;
1.138 schwarze 1225: }
1226:
1227: /* --- main functions of the roff parser ---------------------------------- */
1228:
1.8 schwarze 1229: /*
1.227 schwarze 1230: * In the current line, expand escape sequences that produce parsable
1231: * input text. Also check the syntax of the remaining escape sequences,
1232: * which typically produce output glyphs or change formatter state.
1.8 schwarze 1233: */
1.212 schwarze 1234: static int
1.227 schwarze 1235: roff_expand(struct roff *r, struct buf *buf, int ln, int pos, char newesc)
1.8 schwarze 1236: {
1.211 schwarze 1237: struct mctx *ctx; /* current macro call context */
1.81 schwarze 1238: char ubuf[24]; /* buffer to print the number */
1.200 schwarze 1239: struct roff_node *n; /* used for header comments */
1.78 schwarze 1240: const char *start; /* start of the string to process */
1.82 schwarze 1241: char *stesc; /* start of an escape sequence ('\\') */
1.224 schwarze 1242: const char *esct; /* type of esccape sequence */
1.200 schwarze 1243: char *ep; /* end of comment string */
1.23 schwarze 1244: const char *stnam; /* start of the name, after "[(*" */
1245: const char *cp; /* end of the name, e.g. before ']' */
1246: const char *res; /* the string to be substituted */
1.110 schwarze 1247: char *nbuf; /* new buffer to copy buf->buf to */
1.53 schwarze 1248: size_t maxl; /* expected length of the escape name */
1249: size_t naml; /* actual length of the escape name */
1.211 schwarze 1250: size_t asz; /* length of the replacement */
1251: size_t rsz; /* length of the rest of the string */
1.109 schwarze 1252: int inaml; /* length returned from mandoc_escape() */
1.53 schwarze 1253: int expand_count; /* to avoid infinite loops */
1.79 schwarze 1254: int npos; /* position in numeric expression */
1.91 schwarze 1255: int arg_complete; /* argument not interrupted by eol */
1.211 schwarze 1256: int quote_args; /* true for \\$@, false for \\$* */
1.175 schwarze 1257: int done; /* no more input available */
1.187 schwarze 1258: int deftype; /* type of definition to paste */
1.195 schwarze 1259: int rcsid; /* kind of RCS id seen */
1.224 schwarze 1260: enum mandocerr err; /* for escape sequence problems */
1.199 schwarze 1261: char sign; /* increment number register */
1.79 schwarze 1262: char term; /* character terminating the escape */
1.8 schwarze 1263:
1.175 schwarze 1264: /* Search forward for comments. */
1265:
1266: done = 0;
1267: start = buf->buf + pos;
1268: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1.227 schwarze 1269: if (stesc[0] != newesc || stesc[1] == '\0')
1.175 schwarze 1270: continue;
1271: stesc++;
1272: if (*stesc != '"' && *stesc != '#')
1273: continue;
1.185 schwarze 1274:
1275: /* Comment found, look for RCS id. */
1276:
1.195 schwarze 1277: rcsid = 0;
1.185 schwarze 1278: if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
1.195 schwarze 1279: rcsid = 1 << MANDOC_OS_OPENBSD;
1.185 schwarze 1280: cp += 8;
1281: } else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
1.195 schwarze 1282: rcsid = 1 << MANDOC_OS_NETBSD;
1.185 schwarze 1283: cp += 7;
1284: }
1285: if (cp != NULL &&
1286: isalnum((unsigned char)*cp) == 0 &&
1.186 schwarze 1287: strchr(cp, '$') != NULL) {
1.195 schwarze 1288: if (r->man->meta.rcsids & rcsid)
1.222 schwarze 1289: mandoc_msg(MANDOCERR_RCS_REP, ln,
1290: (int)(stesc - buf->buf) + 1,
1291: "%s", stesc + 1);
1.195 schwarze 1292: r->man->meta.rcsids |= rcsid;
1.186 schwarze 1293: }
1.185 schwarze 1294:
1295: /* Handle trailing whitespace. */
1296:
1.200 schwarze 1297: ep = strchr(stesc--, '\0') - 1;
1298: if (*ep == '\n') {
1.175 schwarze 1299: done = 1;
1.200 schwarze 1300: ep--;
1.175 schwarze 1301: }
1.200 schwarze 1302: if (*ep == ' ' || *ep == '\t')
1.222 schwarze 1303: mandoc_msg(MANDOCERR_SPACE_EOL,
1304: ln, (int)(ep - buf->buf), NULL);
1.200 schwarze 1305:
1306: /*
1307: * Save comments preceding the title macro
1308: * in the syntax tree.
1309: */
1310:
1.239 schwarze 1311: if (newesc != ASCII_ESC && r->options & MPARSE_COMMENT) {
1.200 schwarze 1312: while (*ep == ' ' || *ep == '\t')
1313: ep--;
1314: ep[1] = '\0';
1315: n = roff_node_alloc(r->man,
1316: ln, stesc + 1 - buf->buf,
1317: ROFFT_COMMENT, TOKEN_NONE);
1318: n->string = mandoc_strdup(stesc + 2);
1319: roff_node_append(r->man, n);
1320: n->flags |= NODE_VALID | NODE_ENDED;
1321: r->man->next = ROFF_NEXT_SIBLING;
1322: }
1323:
1.206 schwarze 1324: /* Line continuation with comment. */
1325:
1326: if (stesc[1] == '#') {
1327: *stesc = '\0';
1.212 schwarze 1328: return ROFF_IGN | ROFF_APPEND;
1.206 schwarze 1329: }
1330:
1331: /* Discard normal comments. */
1.200 schwarze 1332:
1.207 schwarze 1333: while (stesc > start && stesc[-1] == ' ' &&
1334: (stesc == start + 1 || stesc[-2] != '\\'))
1.175 schwarze 1335: stesc--;
1336: *stesc = '\0';
1337: break;
1338: }
1339: if (stesc == start)
1340: return ROFF_CONT;
1341: stesc--;
1342:
1343: /* Notice the end of the input. */
1344:
1345: if (*stesc == '\n') {
1346: *stesc-- = '\0';
1347: done = 1;
1348: }
1349:
1.43 schwarze 1350: expand_count = 0;
1.175 schwarze 1351: while (stesc >= start) {
1.227 schwarze 1352: if (*stesc != newesc) {
1.43 schwarze 1353:
1.227 schwarze 1354: /*
1355: * If we have a non-standard escape character,
1356: * escape literal backslashes because all
1357: * processing in subsequent functions uses
1358: * the standard escaping rules.
1359: */
1.78 schwarze 1360:
1.227 schwarze 1361: if (newesc != ASCII_ESC && *stesc == '\\') {
1.175 schwarze 1362: *stesc = '\0';
1363: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1364: buf->buf, stesc + 1) + 1;
1365: start = nbuf + pos;
1366: stesc = nbuf + (stesc - buf->buf);
1367: free(buf->buf);
1368: buf->buf = nbuf;
1369: }
1.227 schwarze 1370:
1371: /* Search backwards for the next escape. */
1372:
1.175 schwarze 1373: stesc--;
1.78 schwarze 1374: continue;
1.175 schwarze 1375: }
1.78 schwarze 1376:
1377: /* If it is escaped, skip it. */
1378:
1379: for (cp = stesc - 1; cp >= start; cp--)
1.175 schwarze 1380: if (*cp != r->escape)
1.78 schwarze 1381: break;
1382:
1.110 schwarze 1383: if ((stesc - cp) % 2 == 0) {
1.175 schwarze 1384: while (stesc > cp)
1385: *stesc-- = '\\';
1.78 schwarze 1386: continue;
1.175 schwarze 1387: } else if (stesc[1] != '\0') {
1388: *stesc = '\\';
1389: } else {
1390: *stesc-- = '\0';
1391: if (done)
1392: continue;
1393: else
1.212 schwarze 1394: return ROFF_IGN | ROFF_APPEND;
1.78 schwarze 1395: }
1.23 schwarze 1396:
1.79 schwarze 1397: /* Decide whether to expand or to check only. */
1.23 schwarze 1398:
1.79 schwarze 1399: term = '\0';
1.78 schwarze 1400: cp = stesc + 1;
1.224 schwarze 1401: if (*cp == 'E')
1402: cp++;
1403: esct = cp;
1404: switch (*esct) {
1.80 schwarze 1405: case '*':
1.211 schwarze 1406: case '$':
1.53 schwarze 1407: res = NULL;
1408: break;
1.80 schwarze 1409: case 'B':
1410: case 'w':
1.79 schwarze 1411: term = cp[1];
1412: /* FALLTHROUGH */
1.80 schwarze 1413: case 'n':
1.199 schwarze 1414: sign = cp[1];
1415: if (sign == '+' || sign == '-')
1416: cp++;
1.53 schwarze 1417: res = ubuf;
1418: break;
1419: default:
1.224 schwarze 1420: err = MANDOCERR_OK;
1421: switch(mandoc_escape(&cp, &stnam, &inaml)) {
1422: case ESCAPE_SPECIAL:
1423: if (mchars_spec2cp(stnam, inaml) >= 0)
1424: break;
1425: /* FALLTHROUGH */
1426: case ESCAPE_ERROR:
1427: err = MANDOCERR_ESC_BAD;
1428: break;
1429: case ESCAPE_UNDEF:
1430: err = MANDOCERR_ESC_UNDEF;
1431: break;
1432: case ESCAPE_UNSUPP:
1433: err = MANDOCERR_ESC_UNSUPP;
1434: break;
1435: default:
1436: break;
1437: }
1438: if (err != MANDOCERR_OK)
1439: mandoc_msg(err, ln, (int)(stesc - buf->buf),
1.92 schwarze 1440: "%.*s", (int)(cp - stesc), stesc);
1.175 schwarze 1441: stesc--;
1.78 schwarze 1442: continue;
1.42 schwarze 1443: }
1444:
1.78 schwarze 1445: if (EXPAND_LIMIT < ++expand_count) {
1.222 schwarze 1446: mandoc_msg(MANDOCERR_ROFFLOOP,
1.110 schwarze 1447: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1448: return ROFF_IGN;
1.78 schwarze 1449: }
1.23 schwarze 1450:
1451: /*
1452: * The third character decides the length
1.53 schwarze 1453: * of the name of the string or register.
1.23 schwarze 1454: * Save a pointer to the name.
1455: */
1456:
1.110 schwarze 1457: if (term == '\0') {
1.79 schwarze 1458: switch (*++cp) {
1.80 schwarze 1459: case '\0':
1.79 schwarze 1460: maxl = 0;
1461: break;
1.80 schwarze 1462: case '(':
1.79 schwarze 1463: cp++;
1464: maxl = 2;
1465: break;
1.80 schwarze 1466: case '[':
1.79 schwarze 1467: cp++;
1468: term = ']';
1469: maxl = 0;
1470: break;
1471: default:
1472: maxl = 1;
1473: break;
1474: }
1475: } else {
1476: cp += 2;
1.8 schwarze 1477: maxl = 0;
1478: }
1.23 schwarze 1479: stnam = cp;
1.8 schwarze 1480:
1.23 schwarze 1481: /* Advance to the end of the name. */
1.8 schwarze 1482:
1.125 schwarze 1483: naml = 0;
1.91 schwarze 1484: arg_complete = 1;
1.125 schwarze 1485: while (maxl == 0 || naml < maxl) {
1.110 schwarze 1486: if (*cp == '\0') {
1.222 schwarze 1487: mandoc_msg(MANDOCERR_ESC_BAD, ln,
1488: (int)(stesc - buf->buf), "%s", stesc);
1.91 schwarze 1489: arg_complete = 0;
1.79 schwarze 1490: break;
1.42 schwarze 1491: }
1.110 schwarze 1492: if (maxl == 0 && *cp == term) {
1.79 schwarze 1493: cp++;
1.125 schwarze 1494: break;
1495: }
1.224 schwarze 1496: if (*cp++ != '\\' || *esct != 'w') {
1.125 schwarze 1497: naml++;
1498: continue;
1499: }
1500: switch (mandoc_escape(&cp, NULL, NULL)) {
1501: case ESCAPE_SPECIAL:
1502: case ESCAPE_UNICODE:
1503: case ESCAPE_NUMBERED:
1.224 schwarze 1504: case ESCAPE_UNDEF:
1.125 schwarze 1505: case ESCAPE_OVERSTRIKE:
1506: naml++;
1507: break;
1508: default:
1.8 schwarze 1509: break;
1.79 schwarze 1510: }
1.8 schwarze 1511: }
1512:
1.23 schwarze 1513: /*
1514: * Retrieve the replacement string; if it is
1515: * undefined, resume searching for escapes.
1516: */
1517:
1.224 schwarze 1518: switch (*esct) {
1.80 schwarze 1519: case '*':
1.187 schwarze 1520: if (arg_complete) {
1521: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1522: res = roff_getstrn(r, stnam, naml, &deftype);
1.203 schwarze 1523:
1524: /*
1525: * If not overriden, let \*(.T
1526: * through to the formatters.
1527: */
1528:
1529: if (res == NULL && naml == 2 &&
1530: stnam[0] == '.' && stnam[1] == 'T') {
1531: roff_setstrn(&r->strtab,
1532: ".T", 2, NULL, 0, 0);
1533: stesc--;
1534: continue;
1535: }
1.187 schwarze 1536: }
1.79 schwarze 1537: break;
1.211 schwarze 1538: case '$':
1539: if (r->mstackpos < 0) {
1.222 schwarze 1540: mandoc_msg(MANDOCERR_ARG_UNDEF, ln,
1541: (int)(stesc - buf->buf), "%.3s", stesc);
1.211 schwarze 1542: break;
1543: }
1544: ctx = r->mstack + r->mstackpos;
1.224 schwarze 1545: npos = esct[1] - '1';
1.211 schwarze 1546: if (npos >= 0 && npos <= 8) {
1547: res = npos < ctx->argc ?
1548: ctx->argv[npos] : "";
1549: break;
1550: }
1.224 schwarze 1551: if (esct[1] == '*')
1.211 schwarze 1552: quote_args = 0;
1.224 schwarze 1553: else if (esct[1] == '@')
1.211 schwarze 1554: quote_args = 1;
1555: else {
1.222 schwarze 1556: mandoc_msg(MANDOCERR_ARG_NONUM, ln,
1557: (int)(stesc - buf->buf), "%.3s", stesc);
1.211 schwarze 1558: break;
1559: }
1560: asz = 0;
1561: for (npos = 0; npos < ctx->argc; npos++) {
1562: if (npos)
1563: asz++; /* blank */
1564: if (quote_args)
1565: asz += 2; /* quotes */
1566: asz += strlen(ctx->argv[npos]);
1567: }
1568: if (asz != 3) {
1569: rsz = buf->sz - (stesc - buf->buf) - 3;
1570: if (asz < 3)
1571: memmove(stesc + asz, stesc + 3, rsz);
1572: buf->sz += asz - 3;
1573: nbuf = mandoc_realloc(buf->buf, buf->sz);
1574: start = nbuf + pos;
1575: stesc = nbuf + (stesc - buf->buf);
1576: buf->buf = nbuf;
1577: if (asz > 3)
1578: memmove(stesc + asz, stesc + 3, rsz);
1579: }
1580: for (npos = 0; npos < ctx->argc; npos++) {
1581: if (npos)
1582: *stesc++ = ' ';
1583: if (quote_args)
1584: *stesc++ = '"';
1585: cp = ctx->argv[npos];
1586: while (*cp != '\0')
1587: *stesc++ = *cp++;
1588: if (quote_args)
1589: *stesc++ = '"';
1590: }
1591: continue;
1.80 schwarze 1592: case 'B':
1.79 schwarze 1593: npos = 0;
1.91 schwarze 1594: ubuf[0] = arg_complete &&
1.133 schwarze 1595: roff_evalnum(r, ln, stnam, &npos,
1596: NULL, ROFFNUM_SCALE) &&
1.91 schwarze 1597: stnam + npos + 1 == cp ? '1' : '0';
1.79 schwarze 1598: ubuf[1] = '\0';
1599: break;
1.80 schwarze 1600: case 'n':
1.91 schwarze 1601: if (arg_complete)
1602: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.199 schwarze 1603: roff_getregn(r, stnam, naml, sign));
1.91 schwarze 1604: else
1605: ubuf[0] = '\0';
1.79 schwarze 1606: break;
1.80 schwarze 1607: case 'w':
1.91 schwarze 1608: /* use even incomplete args */
1.81 schwarze 1609: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.79 schwarze 1610: 24 * (int)naml);
1611: break;
1612: }
1.8 schwarze 1613:
1.110 schwarze 1614: if (res == NULL) {
1.224 schwarze 1615: if (*esct == '*')
1.222 schwarze 1616: mandoc_msg(MANDOCERR_STR_UNDEF,
1617: ln, (int)(stesc - buf->buf),
1.211 schwarze 1618: "%.*s", (int)naml, stnam);
1.37 schwarze 1619: res = "";
1.118 schwarze 1620: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1.222 schwarze 1621: mandoc_msg(MANDOCERR_ROFFLOOP,
1.118 schwarze 1622: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1623: return ROFF_IGN;
1.8 schwarze 1624: }
1625:
1.23 schwarze 1626: /* Replace the escape sequence by the string. */
1627:
1.82 schwarze 1628: *stesc = '\0';
1.110 schwarze 1629: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1630: buf->buf, res, cp) + 1;
1.8 schwarze 1631:
1.78 schwarze 1632: /* Prepare for the next replacement. */
1.8 schwarze 1633:
1.78 schwarze 1634: start = nbuf + pos;
1.110 schwarze 1635: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1636: free(buf->buf);
1637: buf->buf = nbuf;
1.42 schwarze 1638: }
1.149 schwarze 1639: return ROFF_CONT;
1.42 schwarze 1640: }
1.225 schwarze 1641:
1642: /*
1643: * Parse a quoted or unquoted roff-style request or macro argument.
1644: * Return a pointer to the parsed argument, which is either the original
1645: * pointer or advanced by one byte in case the argument is quoted.
1646: * NUL-terminate the argument in place.
1647: * Collapse pairs of quotes inside quoted arguments.
1648: * Advance the argument pointer to the next argument,
1649: * or to the NUL byte terminating the argument line.
1650: */
1651: char *
1.227 schwarze 1652: roff_getarg(struct roff *r, char **cpp, int ln, int *pos)
1.225 schwarze 1653: {
1.227 schwarze 1654: struct buf buf;
1.238 schwarze 1655: char *cp, *start;
1.227 schwarze 1656: int newesc, pairs, quoted, white;
1.225 schwarze 1657:
1658: /* Quoting can only start with a new word. */
1659: start = *cpp;
1660: quoted = 0;
1661: if ('"' == *start) {
1662: quoted = 1;
1663: start++;
1664: }
1665:
1.227 schwarze 1666: newesc = pairs = white = 0;
1.225 schwarze 1667: for (cp = start; '\0' != *cp; cp++) {
1668:
1669: /*
1670: * Move the following text left
1671: * after quoted quotes and after "\\" and "\t".
1672: */
1673: if (pairs)
1674: cp[-pairs] = cp[0];
1675:
1676: if ('\\' == cp[0]) {
1677: /*
1678: * In copy mode, translate double to single
1679: * backslashes and backslash-t to literal tabs.
1680: */
1681: switch (cp[1]) {
1682: case 'a':
1683: case 't':
1.226 schwarze 1684: cp[-pairs] = '\t';
1.227 schwarze 1685: pairs++;
1686: cp++;
1687: break;
1.225 schwarze 1688: case '\\':
1.227 schwarze 1689: newesc = 1;
1690: cp[-pairs] = ASCII_ESC;
1.225 schwarze 1691: pairs++;
1692: cp++;
1693: break;
1694: case ' ':
1695: /* Skip escaped blanks. */
1696: if (0 == quoted)
1697: cp++;
1698: break;
1699: default:
1700: break;
1701: }
1702: } else if (0 == quoted) {
1703: if (' ' == cp[0]) {
1704: /* Unescaped blanks end unquoted args. */
1705: white = 1;
1706: break;
1707: }
1708: } else if ('"' == cp[0]) {
1709: if ('"' == cp[1]) {
1710: /* Quoted quotes collapse. */
1711: pairs++;
1712: cp++;
1713: } else {
1714: /* Unquoted quotes end quoted args. */
1715: quoted = 2;
1716: break;
1717: }
1718: }
1719: }
1720:
1721: /* Quoted argument without a closing quote. */
1722: if (1 == quoted)
1723: mandoc_msg(MANDOCERR_ARG_QUOTE, ln, *pos, NULL);
1724:
1725: /* NUL-terminate this argument and move to the next one. */
1726: if (pairs)
1727: cp[-pairs] = '\0';
1728: if ('\0' != *cp) {
1729: *cp++ = '\0';
1730: while (' ' == *cp)
1731: cp++;
1732: }
1733: *pos += (int)(cp - start) + (quoted ? 1 : 0);
1734: *cpp = cp;
1735:
1736: if ('\0' == *cp && (white || ' ' == cp[-1]))
1737: mandoc_msg(MANDOCERR_SPACE_EOL, ln, *pos, NULL);
1738:
1.227 schwarze 1739: start = mandoc_strdup(start);
1740: if (newesc == 0)
1741: return start;
1742:
1743: buf.buf = start;
1744: buf.sz = strlen(start) + 1;
1745: buf.next = NULL;
1746: if (roff_expand(r, &buf, ln, 0, ASCII_ESC) & ROFF_IGN) {
1747: free(buf.buf);
1748: buf.buf = mandoc_strdup("");
1749: }
1750: return buf.buf;
1.225 schwarze 1751: }
1752:
1.42 schwarze 1753:
1754: /*
1.147 schwarze 1755: * Process text streams.
1.42 schwarze 1756: */
1.212 schwarze 1757: static int
1.177 schwarze 1758: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.42 schwarze 1759: {
1760: size_t sz;
1761: const char *start;
1.51 schwarze 1762: char *p;
1763: int isz;
1.42 schwarze 1764: enum mandoc_esc esc;
1765:
1.147 schwarze 1766: /* Spring the input line trap. */
1767:
1768: if (roffit_lines == 1) {
1769: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1770: free(buf->buf);
1771: buf->buf = p;
1772: buf->sz = isz + 1;
1773: *offs = 0;
1774: free(roffit_macro);
1775: roffit_lines = 0;
1.149 schwarze 1776: return ROFF_REPARSE;
1.147 schwarze 1777: } else if (roffit_lines > 1)
1778: --roffit_lines;
1779:
1.177 schwarze 1780: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1781: if (roffce_lines < 1) {
1782: r->man->last = roffce_node;
1783: r->man->next = ROFF_NEXT_SIBLING;
1784: roffce_lines = 0;
1785: roffce_node = NULL;
1786: } else
1787: roffce_lines--;
1788: }
1789:
1.147 schwarze 1790: /* Convert all breakable hyphens into ASCII_HYPH. */
1791:
1.110 schwarze 1792: start = p = buf->buf + pos;
1.42 schwarze 1793:
1.110 schwarze 1794: while (*p != '\0') {
1.42 schwarze 1795: sz = strcspn(p, "-\\");
1796: p += sz;
1797:
1.110 schwarze 1798: if (*p == '\0')
1.42 schwarze 1799: break;
1800:
1.110 schwarze 1801: if (*p == '\\') {
1.42 schwarze 1802: /* Skip over escapes. */
1803: p++;
1.62 schwarze 1804: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.110 schwarze 1805: if (esc == ESCAPE_ERROR)
1.42 schwarze 1806: break;
1.136 schwarze 1807: while (*p == '-')
1808: p++;
1.42 schwarze 1809: continue;
1810: } else if (p == start) {
1811: p++;
1812: continue;
1813: }
1814:
1.44 schwarze 1815: if (isalpha((unsigned char)p[-1]) &&
1816: isalpha((unsigned char)p[1]))
1.42 schwarze 1817: *p = ASCII_HYPH;
1818: p++;
1.8 schwarze 1819: }
1.149 schwarze 1820: return ROFF_CONT;
1.8 schwarze 1821: }
1822:
1.212 schwarze 1823: int
1.249 schwarze 1824: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs, size_t len)
1.1 schwarze 1825: {
1.166 schwarze 1826: enum roff_tok t;
1.212 schwarze 1827: int e;
1.110 schwarze 1828: int pos; /* parse point */
1.115 schwarze 1829: int spos; /* saved parse point for messages */
1.110 schwarze 1830: int ppos; /* original offset in buf->buf */
1831: int ctl; /* macro line (boolean) */
1832:
1833: ppos = pos = *offs;
1.249 schwarze 1834:
1835: if (len > 80 && r->tbl == NULL && r->eqn == NULL &&
1836: (r->man->flags & ROFF_NOFILL) == 0 &&
1837: strchr(" .\\", buf->buf[pos]) == NULL &&
1838: buf->buf[pos] != r->control &&
1839: strcspn(buf->buf, " ") < 80)
1840: mandoc_msg(MANDOCERR_TEXT_LONG, ln, (int)len - 1,
1841: "%.20s...", buf->buf + pos);
1.1 schwarze 1842:
1.102 schwarze 1843: /* Handle in-line equation delimiters. */
1844:
1.108 schwarze 1845: if (r->tbl == NULL &&
1846: r->last_eqn != NULL && r->last_eqn->delim &&
1.102 schwarze 1847: (r->eqn == NULL || r->eqn_inline)) {
1.110 schwarze 1848: e = roff_eqndelim(r, buf, pos);
1.102 schwarze 1849: if (e == ROFF_REPARSE)
1.149 schwarze 1850: return e;
1.102 schwarze 1851: assert(e == ROFF_CONT);
1852: }
1853:
1854: /* Expand some escape sequences. */
1.8 schwarze 1855:
1.227 schwarze 1856: e = roff_expand(r, buf, ln, pos, r->escape);
1.212 schwarze 1857: if ((e & ROFF_MASK) == ROFF_IGN)
1.149 schwarze 1858: return e;
1.110 schwarze 1859: assert(e == ROFF_CONT);
1.8 schwarze 1860:
1.110 schwarze 1861: ctl = roff_getcontrol(r, buf->buf, &pos);
1.35 schwarze 1862:
1.8 schwarze 1863: /*
1.2 schwarze 1864: * First, if a scope is open and we're not a macro, pass the
1.124 schwarze 1865: * text through the macro's filter.
1866: * Equations process all content themselves.
1867: * Tables process almost all content themselves, but we want
1868: * to warn about macros before passing it there.
1.2 schwarze 1869: */
1870:
1.124 schwarze 1871: if (r->last != NULL && ! ctl) {
1.2 schwarze 1872: t = r->last->tok;
1.110 schwarze 1873: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.212 schwarze 1874: if ((e & ROFF_MASK) == ROFF_IGN)
1.149 schwarze 1875: return e;
1.212 schwarze 1876: e &= ~ROFF_MASK;
1877: } else
1878: e = ROFF_IGN;
1.191 schwarze 1879: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1880: eqn_read(r->eqn, buf->buf + ppos);
1.212 schwarze 1881: return e;
1.191 schwarze 1882: }
1.193 schwarze 1883: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1884: tbl_read(r->tbl, ln, buf->buf, ppos);
1.218 schwarze 1885: roff_addtbl(r->man, ln, r->tbl);
1.212 schwarze 1886: return e;
1.193 schwarze 1887: }
1.239 schwarze 1888: if ( ! ctl) {
1889: r->options &= ~MPARSE_COMMENT;
1.212 schwarze 1890: return roff_parsetext(r, buf, pos, offs) | e;
1.239 schwarze 1891: }
1.100 schwarze 1892:
1893: /* Skip empty request lines. */
1894:
1.110 schwarze 1895: if (buf->buf[pos] == '"') {
1.222 schwarze 1896: mandoc_msg(MANDOCERR_COMMENT_BAD, ln, pos, NULL);
1.149 schwarze 1897: return ROFF_IGN;
1.110 schwarze 1898: } else if (buf->buf[pos] == '\0')
1.149 schwarze 1899: return ROFF_IGN;
1.2 schwarze 1900:
1901: /*
1902: * If a scope is open, go to the child handler for that macro,
1903: * as it may want to preprocess before doing anything with it.
1.32 schwarze 1904: * Don't do so if an equation is open.
1.2 schwarze 1905: */
1906:
1907: if (r->last) {
1.1 schwarze 1908: t = r->last->tok;
1.149 schwarze 1909: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1910: }
1911:
1.115 schwarze 1912: /* No scope is open. This is a new request or macro. */
1913:
1.239 schwarze 1914: r->options &= ~MPARSE_COMMENT;
1.115 schwarze 1915: spos = pos;
1916: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1917:
1918: /* Tables ignore most macros. */
1919:
1.180 schwarze 1920: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.181 schwarze 1921: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.222 schwarze 1922: mandoc_msg(MANDOCERR_TBLMACRO,
1923: ln, pos, "%s", buf->buf + spos);
1.180 schwarze 1924: if (t != TOKEN_NONE)
1.149 schwarze 1925: return ROFF_IGN;
1.129 schwarze 1926: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1927: pos++;
1.163 schwarze 1928: while (buf->buf[pos] == ' ')
1.129 schwarze 1929: pos++;
1.193 schwarze 1930: tbl_read(r->tbl, ln, buf->buf, pos);
1.218 schwarze 1931: roff_addtbl(r->man, ln, r->tbl);
1.193 schwarze 1932: return ROFF_IGN;
1.115 schwarze 1933: }
1934:
1.177 schwarze 1935: /* For now, let high level macros abort .ce mode. */
1936:
1937: if (ctl && roffce_node != NULL &&
1.196 schwarze 1938: (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
1939: t == ROFF_TH || t == ROFF_TS)) {
1.177 schwarze 1940: r->man->last = roffce_node;
1941: r->man->next = ROFF_NEXT_SIBLING;
1942: roffce_lines = 0;
1943: roffce_node = NULL;
1944: }
1945:
1.2 schwarze 1946: /*
1.115 schwarze 1947: * This is neither a roff request nor a user-defined macro.
1948: * Let the standard macro set parsers handle it.
1.2 schwarze 1949: */
1950:
1.166 schwarze 1951: if (t == TOKEN_NONE)
1.149 schwarze 1952: return ROFF_CONT;
1.115 schwarze 1953:
1954: /* Execute a roff request or a user defined macro. */
1.1 schwarze 1955:
1.168 schwarze 1956: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.2 schwarze 1957: }
1958:
1.211 schwarze 1959: /*
1960: * Internal interface function to tell the roff parser that execution
1961: * of the current macro ended. This is required because macro
1962: * definitions usually do not end with a .return request.
1963: */
1964: void
1965: roff_userret(struct roff *r)
1966: {
1967: struct mctx *ctx;
1968: int i;
1969:
1970: assert(r->mstackpos >= 0);
1971: ctx = r->mstack + r->mstackpos;
1972: for (i = 0; i < ctx->argc; i++)
1973: free(ctx->argv[i]);
1974: ctx->argc = 0;
1975: r->mstackpos--;
1976: }
1977:
1.27 schwarze 1978: void
1.2 schwarze 1979: roff_endparse(struct roff *r)
1980: {
1.193 schwarze 1981: if (r->last != NULL)
1.222 schwarze 1982: mandoc_msg(MANDOCERR_BLK_NOEND, r->last->line,
1983: r->last->col, "%s", roff_name[r->last->tok]);
1.27 schwarze 1984:
1.193 schwarze 1985: if (r->eqn != NULL) {
1.222 schwarze 1986: mandoc_msg(MANDOCERR_BLK_NOEND,
1.191 schwarze 1987: r->eqn->node->line, r->eqn->node->pos, "EQ");
1988: eqn_parse(r->eqn);
1989: r->eqn = NULL;
1.32 schwarze 1990: }
1991:
1.193 schwarze 1992: if (r->tbl != NULL) {
1.218 schwarze 1993: tbl_end(r->tbl, 1);
1.193 schwarze 1994: r->tbl = NULL;
1.27 schwarze 1995: }
1.1 schwarze 1996: }
1997:
1998: /*
1999: * Parse a roff node's type from the input buffer. This must be in the
2000: * form of ".foo xxx" in the usual way.
2001: */
1.166 schwarze 2002: static enum roff_tok
1.87 schwarze 2003: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.1 schwarze 2004: {
1.87 schwarze 2005: char *cp;
1.16 schwarze 2006: const char *mac;
2007: size_t maclen;
1.187 schwarze 2008: int deftype;
1.166 schwarze 2009: enum roff_tok t;
1.1 schwarze 2010:
1.87 schwarze 2011: cp = buf + *pos;
2012:
2013: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.166 schwarze 2014: return TOKEN_NONE;
1.1 schwarze 2015:
1.87 schwarze 2016: mac = cp;
2017: maclen = roff_getname(r, &cp, ln, ppos);
1.1 schwarze 2018:
1.187 schwarze 2019: deftype = ROFFDEF_USER | ROFFDEF_REN;
2020: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
2021: switch (deftype) {
2022: case ROFFDEF_USER:
2023: t = ROFF_USERDEF;
2024: break;
2025: case ROFFDEF_REN:
2026: t = ROFF_RENAMED;
2027: break;
2028: default:
2029: t = roffhash_find(r->reqtab, mac, maclen);
2030: break;
2031: }
1.166 schwarze 2032: if (t != TOKEN_NONE)
1.87 schwarze 2033: *pos = cp - buf;
1.197 schwarze 2034: else if (deftype == ROFFDEF_UNDEF) {
2035: /* Using an undefined macro defines it to be empty. */
2036: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
2037: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
2038: }
1.149 schwarze 2039: return t;
1.1 schwarze 2040: }
2041:
1.138 schwarze 2042: /* --- handling of request blocks ----------------------------------------- */
2043:
1.247 schwarze 2044: /*
2045: * Close a macro definition block or an "ignore" block.
2046: */
1.212 schwarze 2047: static int
1.2 schwarze 2048: roff_cblock(ROFF_ARGS)
1.1 schwarze 2049: {
1.247 schwarze 2050: int rr;
1.2 schwarze 2051:
1.110 schwarze 2052: if (r->last == NULL) {
1.222 schwarze 2053: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.149 schwarze 2054: return ROFF_IGN;
1.2 schwarze 2055: }
1.1 schwarze 2056:
1.2 schwarze 2057: switch (r->last->tok) {
1.80 schwarze 2058: case ROFF_am:
2059: case ROFF_ami:
2060: case ROFF_de:
2061: case ROFF_dei:
2062: case ROFF_ig:
1.2 schwarze 2063: break;
1.247 schwarze 2064: case ROFF_am1:
2065: case ROFF_de1:
2066: /* Remapped in roff_block(). */
2067: abort();
1.2 schwarze 2068: default:
1.222 schwarze 2069: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.149 schwarze 2070: return ROFF_IGN;
1.2 schwarze 2071: }
2072:
1.247 schwarze 2073: roffnode_pop(r);
2074: roffnode_cleanscope(r);
2075:
2076: /*
2077: * If a conditional block with braces is still open,
2078: * check for "\}" block end markers.
2079: */
2080:
2081: if (r->last != NULL && r->last->endspan < 0) {
2082: rr = 1; /* If arguments follow "\}", warn about them. */
2083: roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
2084: }
2085:
1.110 schwarze 2086: if (buf->buf[pos] != '\0')
1.222 schwarze 2087: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.110 schwarze 2088: ".. %s", buf->buf + pos);
1.2 schwarze 2089:
1.149 schwarze 2090: return ROFF_IGN;
1.2 schwarze 2091: }
1.1 schwarze 2092:
1.236 schwarze 2093: /*
2094: * Pop all nodes ending at the end of the current input line.
2095: * Return the number of loops ended.
2096: */
1.212 schwarze 2097: static int
1.2 schwarze 2098: roffnode_cleanscope(struct roff *r)
2099: {
1.212 schwarze 2100: int inloop;
1.1 schwarze 2101:
1.212 schwarze 2102: inloop = 0;
1.247 schwarze 2103: while (r->last != NULL && r->last->endspan > 0) {
1.46 schwarze 2104: if (--r->last->endspan != 0)
1.2 schwarze 2105: break;
1.212 schwarze 2106: inloop += roffnode_pop(r);
1.2 schwarze 2107: }
1.212 schwarze 2108: return inloop;
1.2 schwarze 2109: }
1.1 schwarze 2110:
1.236 schwarze 2111: /*
1.247 schwarze 2112: * Handle the closing "\}" of a conditional block.
1.236 schwarze 2113: * Apart from generating warnings, this only pops nodes.
2114: * Return the number of loops ended.
2115: */
1.212 schwarze 2116: static int
1.68 schwarze 2117: roff_ccond(struct roff *r, int ln, int ppos)
1.2 schwarze 2118: {
2119: if (NULL == r->last) {
1.222 schwarze 2120: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.212 schwarze 2121: return 0;
1.2 schwarze 2122: }
1.1 schwarze 2123:
1.2 schwarze 2124: switch (r->last->tok) {
1.80 schwarze 2125: case ROFF_el:
2126: case ROFF_ie:
2127: case ROFF_if:
1.212 schwarze 2128: case ROFF_while:
1.2 schwarze 2129: break;
2130: default:
1.222 schwarze 2131: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.212 schwarze 2132: return 0;
1.2 schwarze 2133: }
1.1 schwarze 2134:
1.2 schwarze 2135: if (r->last->endspan > -1) {
1.222 schwarze 2136: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.212 schwarze 2137: return 0;
1.2 schwarze 2138: }
2139:
1.212 schwarze 2140: return roffnode_pop(r) + roffnode_cleanscope(r);
1.1 schwarze 2141: }
2142:
1.212 schwarze 2143: static int
1.2 schwarze 2144: roff_block(ROFF_ARGS)
1.1 schwarze 2145: {
1.187 schwarze 2146: const char *name, *value;
2147: char *call, *cp, *iname, *rname;
2148: size_t csz, namesz, rsz;
2149: int deftype;
1.16 schwarze 2150:
1.93 schwarze 2151: /* Ignore groff compatibility mode for now. */
1.2 schwarze 2152:
1.110 schwarze 2153: if (tok == ROFF_de1)
1.93 schwarze 2154: tok = ROFF_de;
1.123 schwarze 2155: else if (tok == ROFF_dei1)
2156: tok = ROFF_dei;
1.110 schwarze 2157: else if (tok == ROFF_am1)
1.93 schwarze 2158: tok = ROFF_am;
1.123 schwarze 2159: else if (tok == ROFF_ami1)
2160: tok = ROFF_ami;
1.93 schwarze 2161:
2162: /* Parse the macro name argument. */
2163:
1.110 schwarze 2164: cp = buf->buf + pos;
2165: if (tok == ROFF_ig) {
1.93 schwarze 2166: iname = NULL;
2167: namesz = 0;
2168: } else {
2169: iname = cp;
2170: namesz = roff_getname(r, &cp, ln, ppos);
2171: iname[namesz] = '\0';
2172: }
1.22 schwarze 2173:
1.93 schwarze 2174: /* Resolve the macro name argument if it is indirect. */
1.22 schwarze 2175:
1.110 schwarze 2176: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.187 schwarze 2177: deftype = ROFFDEF_USER;
2178: name = roff_getstrn(r, iname, namesz, &deftype);
2179: if (name == NULL) {
1.222 schwarze 2180: mandoc_msg(MANDOCERR_STR_UNDEF,
2181: ln, (int)(iname - buf->buf),
1.93 schwarze 2182: "%.*s", (int)namesz, iname);
2183: namesz = 0;
2184: } else
2185: namesz = strlen(name);
2186: } else
2187: name = iname;
1.22 schwarze 2188:
1.110 schwarze 2189: if (namesz == 0 && tok != ROFF_ig) {
1.222 schwarze 2190: mandoc_msg(MANDOCERR_REQ_EMPTY,
2191: ln, ppos, "%s", roff_name[tok]);
1.149 schwarze 2192: return ROFF_IGN;
1.93 schwarze 2193: }
1.2 schwarze 2194:
1.16 schwarze 2195: roffnode_push(r, tok, name, ln, ppos);
2196:
2197: /*
2198: * At the beginning of a `de' macro, clear the existing string
2199: * with the same name, if there is one. New content will be
1.66 schwarze 2200: * appended from roff_block_text() in multiline mode.
1.16 schwarze 2201: */
1.22 schwarze 2202:
1.183 schwarze 2203: if (tok == ROFF_de || tok == ROFF_dei) {
1.86 schwarze 2204: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.183 schwarze 2205: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.187 schwarze 2206: } else if (tok == ROFF_am || tok == ROFF_ami) {
2207: deftype = ROFFDEF_ANY;
2208: value = roff_getstrn(r, iname, namesz, &deftype);
2209: switch (deftype) { /* Before appending, ... */
2210: case ROFFDEF_PRE: /* copy predefined to user-defined. */
2211: roff_setstrn(&r->strtab, name, namesz,
2212: value, strlen(value), 0);
2213: break;
2214: case ROFFDEF_REN: /* call original standard macro. */
2215: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2216: (int)strlen(value), value);
2217: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2218: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
2219: free(call);
2220: break;
2221: case ROFFDEF_STD: /* rename and call standard macro. */
2222: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
2223: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
2224: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2225: (int)rsz, rname);
2226: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2227: free(call);
2228: free(rname);
2229: break;
2230: default:
2231: break;
2232: }
1.183 schwarze 2233: }
1.2 schwarze 2234:
1.110 schwarze 2235: if (*cp == '\0')
1.149 schwarze 2236: return ROFF_IGN;
1.1 schwarze 2237:
1.93 schwarze 2238: /* Get the custom end marker. */
1.22 schwarze 2239:
1.93 schwarze 2240: iname = cp;
1.86 schwarze 2241: namesz = roff_getname(r, &cp, ln, ppos);
1.93 schwarze 2242:
2243: /* Resolve the end marker if it is indirect. */
2244:
1.110 schwarze 2245: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.187 schwarze 2246: deftype = ROFFDEF_USER;
2247: name = roff_getstrn(r, iname, namesz, &deftype);
2248: if (name == NULL) {
1.222 schwarze 2249: mandoc_msg(MANDOCERR_STR_UNDEF,
2250: ln, (int)(iname - buf->buf),
1.93 schwarze 2251: "%.*s", (int)namesz, iname);
2252: namesz = 0;
2253: } else
2254: namesz = strlen(name);
2255: } else
2256: name = iname;
2257:
1.86 schwarze 2258: if (namesz)
2259: r->last->end = mandoc_strndup(name, namesz);
1.2 schwarze 2260:
1.110 schwarze 2261: if (*cp != '\0')
1.222 schwarze 2262: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.167 schwarze 2263: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.1 schwarze 2264:
1.149 schwarze 2265: return ROFF_IGN;
1.1 schwarze 2266: }
2267:
1.212 schwarze 2268: static int
1.2 schwarze 2269: roff_block_sub(ROFF_ARGS)
1.1 schwarze 2270: {
1.166 schwarze 2271: enum roff_tok t;
1.2 schwarze 2272: int i, j;
2273:
2274: /*
2275: * First check whether a custom macro exists at this level. If
2276: * it does, then check against it. This is some of groff's
2277: * stranger behaviours. If we encountered a custom end-scope
2278: * tag and that tag also happens to be a "real" macro, then we
2279: * need to try interpreting it again as a real macro. If it's
2280: * not, then return ignore. Else continue.
2281: */
2282:
2283: if (r->last->end) {
1.35 schwarze 2284: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.110 schwarze 2285: if (buf->buf[i] != r->last->end[j])
1.2 schwarze 2286: break;
1.1 schwarze 2287:
1.110 schwarze 2288: if (r->last->end[j] == '\0' &&
2289: (buf->buf[i] == '\0' ||
2290: buf->buf[i] == ' ' ||
2291: buf->buf[i] == '\t')) {
1.2 schwarze 2292: roffnode_pop(r);
2293: roffnode_cleanscope(r);
1.1 schwarze 2294:
1.110 schwarze 2295: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.35 schwarze 2296: i++;
2297:
2298: pos = i;
1.110 schwarze 2299: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.166 schwarze 2300: TOKEN_NONE)
1.149 schwarze 2301: return ROFF_RERUN;
2302: return ROFF_IGN;
1.2 schwarze 2303: }
1.1 schwarze 2304: }
2305:
1.2 schwarze 2306: /*
2307: * If we have no custom end-query or lookup failed, then try
2308: * pulling it out of the hashtable.
2309: */
1.1 schwarze 2310:
1.110 schwarze 2311: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.1 schwarze 2312:
1.110 schwarze 2313: if (t != ROFF_cblock) {
2314: if (tok != ROFF_ig)
2315: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.149 schwarze 2316: return ROFF_IGN;
1.16 schwarze 2317: }
1.1 schwarze 2318:
1.149 schwarze 2319: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 2320: }
2321:
1.212 schwarze 2322: static int
1.2 schwarze 2323: roff_block_text(ROFF_ARGS)
2324: {
2325:
1.110 schwarze 2326: if (tok != ROFF_ig)
2327: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.16 schwarze 2328:
1.149 schwarze 2329: return ROFF_IGN;
1.2 schwarze 2330: }
2331:
1.247 schwarze 2332: /*
2333: * Check for a closing "\}" and handle it.
2334: * In this function, the final "int *offs" argument is used for
2335: * different purposes than elsewhere:
2336: * Input: *offs == 0: caller wants to discard arguments following \}
2337: * *offs == 1: caller wants to preserve text following \}
2338: * Output: *offs = 0: tell caller to discard input line
2339: * *offs = 1: tell caller to use input line
2340: */
1.212 schwarze 2341: static int
1.247 schwarze 2342: roff_cond_checkend(ROFF_ARGS)
1.2 schwarze 2343: {
1.212 schwarze 2344: char *ep;
2345: int endloop, irc, rr;
1.2 schwarze 2346:
1.212 schwarze 2347: irc = ROFF_IGN;
1.2 schwarze 2348: rr = r->last->rule;
1.212 schwarze 2349: endloop = tok != ROFF_while ? ROFF_IGN :
2350: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2351: if (roffnode_cleanscope(r))
2352: irc |= endloop;
1.39 schwarze 2353:
1.69 schwarze 2354: /*
1.247 schwarze 2355: * If "\}" occurs on a macro line without a preceding macro or
2356: * a text line contains nothing else, drop the line completely.
1.69 schwarze 2357: */
2358:
1.110 schwarze 2359: ep = buf->buf + pos;
1.247 schwarze 2360: if (ep[0] == '\\' && ep[1] == '}' && (ep[2] == '\0' || *offs == 0))
1.71 schwarze 2361: rr = 0;
1.69 schwarze 2362:
1.215 schwarze 2363: /*
1.247 schwarze 2364: * The closing delimiter "\}" rewinds the conditional scope
1.215 schwarze 2365: * but is otherwise ignored when interpreting the line.
2366: */
1.39 schwarze 2367:
1.110 schwarze 2368: while ((ep = strchr(ep, '\\')) != NULL) {
1.190 schwarze 2369: switch (ep[1]) {
2370: case '}':
1.248 schwarze 2371: if (ep[2] == '\0')
2372: ep[0] = '\0';
2373: else if (rr)
1.247 schwarze 2374: ep[1] = '&';
2375: else
2376: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1.212 schwarze 2377: if (roff_ccond(r, ln, ep - buf->buf))
2378: irc |= endloop;
1.190 schwarze 2379: break;
2380: case '\0':
2381: ++ep;
2382: break;
2383: default:
2384: ep += 2;
2385: break;
1.70 schwarze 2386: }
1.50 schwarze 2387: }
1.247 schwarze 2388: *offs = rr;
2389: return irc;
2390: }
1.190 schwarze 2391:
1.247 schwarze 2392: /*
2393: * Parse and process a request or macro line in conditional scope.
2394: */
2395: static int
2396: roff_cond_sub(ROFF_ARGS)
2397: {
2398: struct roffnode *bl;
2399: int irc, rr;
2400: enum roff_tok t;
2401:
2402: rr = 0; /* If arguments follow "\}", skip them. */
2403: irc = roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
1.240 schwarze 2404: t = roff_parse(r, buf->buf, &pos, ln, ppos);
2405:
2406: /* For now, let high level macros abort .ce mode. */
2407:
2408: if (roffce_node != NULL &&
2409: (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
2410: t == ROFF_TH || t == ROFF_TS)) {
2411: r->man->last = roffce_node;
2412: r->man->next = ROFF_NEXT_SIBLING;
2413: roffce_lines = 0;
2414: roffce_node = NULL;
2415: }
2416:
1.190 schwarze 2417: /*
2418: * Fully handle known macros when they are structurally
2419: * required or when the conditional evaluated to true.
2420: */
2421:
1.236 schwarze 2422: if (t == ROFF_break) {
2423: if (irc & ROFF_LOOPMASK)
2424: irc = ROFF_IGN | ROFF_LOOPEXIT;
2425: else if (rr) {
2426: for (bl = r->last; bl != NULL; bl = bl->parent) {
2427: bl->rule = 0;
2428: if (bl->tok == ROFF_while)
2429: break;
2430: }
2431: }
2432: } else if (t != TOKEN_NONE &&
2433: (rr || roffs[t].flags & ROFFMAC_STRUCT))
2434: irc |= (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
2435: else
2436: irc |= rr ? ROFF_CONT : ROFF_IGN;
1.212 schwarze 2437: return irc;
1.2 schwarze 2438: }
2439:
1.247 schwarze 2440: /*
2441: * Parse and process a text line in conditional scope.
2442: */
1.212 schwarze 2443: static int
1.2 schwarze 2444: roff_cond_text(ROFF_ARGS)
2445: {
1.247 schwarze 2446: int irc, rr;
1.215 schwarze 2447:
1.247 schwarze 2448: rr = 1; /* If arguments follow "\}", preserve them. */
2449: irc = roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
1.212 schwarze 2450: if (rr)
2451: irc |= ROFF_CONT;
2452: return irc;
1.2 schwarze 2453: }
2454:
1.138 schwarze 2455: /* --- handling of numeric and conditional expressions -------------------- */
2456:
1.77 schwarze 2457: /*
2458: * Parse a single signed integer number. Stop at the first non-digit.
2459: * If there is at least one digit, return success and advance the
2460: * parse point, else return failure and let the parse point unchanged.
2461: * Ignore overflows, treat them just like the C language.
2462: */
1.56 schwarze 2463: static int
1.133 schwarze 2464: roff_getnum(const char *v, int *pos, int *res, int flags)
1.56 schwarze 2465: {
1.133 schwarze 2466: int myres, scaled, n, p;
1.79 schwarze 2467:
2468: if (NULL == res)
2469: res = &myres;
1.56 schwarze 2470:
2471: p = *pos;
2472: n = v[p] == '-';
1.133 schwarze 2473: if (n || v[p] == '+')
1.56 schwarze 2474: p++;
2475:
1.133 schwarze 2476: if (flags & ROFFNUM_WHITE)
2477: while (isspace((unsigned char)v[p]))
2478: p++;
2479:
1.56 schwarze 2480: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.77 schwarze 2481: *res = 10 * *res + v[p] - '0';
1.56 schwarze 2482: if (p == *pos + n)
2483: return 0;
2484:
2485: if (n)
2486: *res = -*res;
2487:
1.126 schwarze 2488: /* Each number may be followed by one optional scaling unit. */
2489:
2490: switch (v[p]) {
2491: case 'f':
1.133 schwarze 2492: scaled = *res * 65536;
1.126 schwarze 2493: break;
2494: case 'i':
1.133 schwarze 2495: scaled = *res * 240;
1.126 schwarze 2496: break;
2497: case 'c':
1.133 schwarze 2498: scaled = *res * 240 / 2.54;
1.126 schwarze 2499: break;
2500: case 'v':
2501: case 'P':
1.133 schwarze 2502: scaled = *res * 40;
1.126 schwarze 2503: break;
2504: case 'm':
2505: case 'n':
1.133 schwarze 2506: scaled = *res * 24;
1.126 schwarze 2507: break;
2508: case 'p':
1.133 schwarze 2509: scaled = *res * 10 / 3;
1.126 schwarze 2510: break;
2511: case 'u':
1.133 schwarze 2512: scaled = *res;
1.126 schwarze 2513: break;
2514: case 'M':
1.133 schwarze 2515: scaled = *res * 6 / 25;
1.126 schwarze 2516: break;
2517: default:
1.133 schwarze 2518: scaled = *res;
1.126 schwarze 2519: p--;
2520: break;
2521: }
1.133 schwarze 2522: if (flags & ROFFNUM_SCALE)
2523: *res = scaled;
1.126 schwarze 2524:
2525: *pos = p + 1;
1.149 schwarze 2526: return 1;
1.56 schwarze 2527: }
2528:
1.71 schwarze 2529: /*
2530: * Evaluate a string comparison condition.
2531: * The first character is the delimiter.
2532: * Succeed if the string up to its second occurrence
2533: * matches the string up to its third occurence.
2534: * Advance the cursor after the third occurrence
2535: * or lacking that, to the end of the line.
2536: */
2537: static int
2538: roff_evalstrcond(const char *v, int *pos)
2539: {
2540: const char *s1, *s2, *s3;
2541: int match;
2542:
2543: match = 0;
2544: s1 = v + *pos; /* initial delimiter */
2545: s2 = s1 + 1; /* for scanning the first string */
2546: s3 = strchr(s2, *s1); /* for scanning the second string */
2547:
2548: if (NULL == s3) /* found no middle delimiter */
2549: goto out;
2550:
2551: while ('\0' != *++s3) {
2552: if (*s2 != *s3) { /* mismatch */
2553: s3 = strchr(s3, *s1);
2554: break;
2555: }
2556: if (*s3 == *s1) { /* found the final delimiter */
2557: match = 1;
2558: break;
2559: }
2560: s2++;
2561: }
2562:
2563: out:
2564: if (NULL == s3)
2565: s3 = strchr(s2, '\0');
1.114 schwarze 2566: else if (*s3 != '\0')
1.71 schwarze 2567: s3++;
2568: *pos = s3 - v;
1.149 schwarze 2569: return match;
1.71 schwarze 2570: }
2571:
1.77 schwarze 2572: /*
2573: * Evaluate an optionally negated single character, numerical,
2574: * or string condition.
2575: */
1.71 schwarze 2576: static int
1.143 schwarze 2577: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.5 schwarze 2578: {
1.208 schwarze 2579: const char *start, *end;
2580: char *cp, *name;
2581: size_t sz;
2582: int deftype, len, number, savepos, istrue, wanttrue;
1.5 schwarze 2583:
1.71 schwarze 2584: if ('!' == v[*pos]) {
2585: wanttrue = 0;
2586: (*pos)++;
2587: } else
2588: wanttrue = 1;
2589:
1.5 schwarze 2590: switch (v[*pos]) {
1.112 schwarze 2591: case '\0':
1.149 schwarze 2592: return 0;
1.80 schwarze 2593: case 'n':
2594: case 'o':
1.5 schwarze 2595: (*pos)++;
1.149 schwarze 2596: return wanttrue;
1.80 schwarze 2597: case 'e':
2598: case 't':
1.111 schwarze 2599: case 'v':
1.5 schwarze 2600: (*pos)++;
1.149 schwarze 2601: return !wanttrue;
1.208 schwarze 2602: case 'c':
2603: do {
2604: (*pos)++;
2605: } while (v[*pos] == ' ');
2606:
2607: /*
2608: * Quirk for groff compatibility:
2609: * The horizontal tab is neither available nor unavailable.
2610: */
2611:
2612: if (v[*pos] == '\t') {
2613: (*pos)++;
2614: return 0;
2615: }
2616:
2617: /* Printable ASCII characters are available. */
2618:
2619: if (v[*pos] != '\\') {
2620: (*pos)++;
2621: return wanttrue;
2622: }
2623:
2624: end = v + ++*pos;
2625: switch (mandoc_escape(&end, &start, &len)) {
2626: case ESCAPE_SPECIAL:
2627: istrue = mchars_spec2cp(start, len) != -1;
2628: break;
2629: case ESCAPE_UNICODE:
2630: istrue = 1;
2631: break;
2632: case ESCAPE_NUMBERED:
2633: istrue = mchars_num2char(start, len) != -1;
2634: break;
2635: default:
2636: istrue = !wanttrue;
2637: break;
2638: }
2639: *pos = end - v;
2640: return istrue == wanttrue;
1.182 schwarze 2641: case 'd':
1.143 schwarze 2642: case 'r':
1.182 schwarze 2643: cp = v + *pos + 1;
2644: while (*cp == ' ')
2645: cp++;
2646: name = cp;
2647: sz = roff_getname(r, &cp, ln, cp - v);
1.187 schwarze 2648: if (sz == 0)
2649: istrue = 0;
2650: else if (v[*pos] == 'r')
2651: istrue = roff_hasregn(r, name, sz);
2652: else {
2653: deftype = ROFFDEF_ANY;
2654: roff_getstrn(r, name, sz, &deftype);
2655: istrue = !!deftype;
2656: }
1.235 schwarze 2657: *pos = (name + sz) - v;
1.182 schwarze 2658: return istrue == wanttrue;
1.5 schwarze 2659: default:
2660: break;
2661: }
2662:
1.113 schwarze 2663: savepos = *pos;
1.133 schwarze 2664: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.149 schwarze 2665: return (number > 0) == wanttrue;
1.113 schwarze 2666: else if (*pos == savepos)
1.149 schwarze 2667: return roff_evalstrcond(v, pos) == wanttrue;
1.77 schwarze 2668: else
1.149 schwarze 2669: return 0;
1.5 schwarze 2670: }
2671:
1.212 schwarze 2672: static int
1.21 schwarze 2673: roff_line_ignore(ROFF_ARGS)
1.6 schwarze 2674: {
1.30 schwarze 2675:
1.149 schwarze 2676: return ROFF_IGN;
1.21 schwarze 2677: }
2678:
1.212 schwarze 2679: static int
1.123 schwarze 2680: roff_insec(ROFF_ARGS)
2681: {
2682:
1.222 schwarze 2683: mandoc_msg(MANDOCERR_REQ_INSEC, ln, ppos, "%s", roff_name[tok]);
1.149 schwarze 2684: return ROFF_IGN;
1.123 schwarze 2685: }
2686:
1.212 schwarze 2687: static int
1.123 schwarze 2688: roff_unsupp(ROFF_ARGS)
2689: {
2690:
1.222 schwarze 2691: mandoc_msg(MANDOCERR_REQ_UNSUPP, ln, ppos, "%s", roff_name[tok]);
1.149 schwarze 2692: return ROFF_IGN;
1.123 schwarze 2693: }
2694:
1.212 schwarze 2695: static int
1.2 schwarze 2696: roff_cond(ROFF_ARGS)
2697: {
1.212 schwarze 2698: int irc;
1.46 schwarze 2699:
2700: roffnode_push(r, tok, NULL, ln, ppos);
1.2 schwarze 2701:
1.80 schwarze 2702: /*
1.35 schwarze 2703: * An `.el' has no conditional body: it will consume the value
2704: * of the current rstack entry set in prior `ie' calls or
1.80 schwarze 2705: * defaults to DENY.
1.35 schwarze 2706: *
2707: * If we're not an `el', however, then evaluate the conditional.
2708: */
1.1 schwarze 2709:
1.110 schwarze 2710: r->last->rule = tok == ROFF_el ?
1.80 schwarze 2711: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.110 schwarze 2712: roff_evalcond(r, ln, buf->buf, &pos);
1.2 schwarze 2713:
1.35 schwarze 2714: /*
2715: * An if-else will put the NEGATION of the current evaluated
2716: * conditional into the stack of rules.
2717: */
2718:
1.110 schwarze 2719: if (tok == ROFF_ie) {
1.96 schwarze 2720: if (r->rstackpos + 1 == r->rstacksz) {
2721: r->rstacksz += 16;
2722: r->rstack = mandoc_reallocarray(r->rstack,
2723: r->rstacksz, sizeof(int));
1.35 schwarze 2724: }
1.71 schwarze 2725: r->rstack[++r->rstackpos] = !r->last->rule;
1.2 schwarze 2726: }
1.5 schwarze 2727:
2728: /* If the parent has false as its rule, then so do we. */
2729:
1.71 schwarze 2730: if (r->last->parent && !r->last->parent->rule)
2731: r->last->rule = 0;
1.5 schwarze 2732:
2733: /*
1.46 schwarze 2734: * Determine scope.
2735: * If there is nothing on the line after the conditional,
2736: * not even whitespace, use next-line scope.
1.212 schwarze 2737: * Except that .while does not support next-line scope.
1.5 schwarze 2738: */
1.2 schwarze 2739:
1.212 schwarze 2740: if (buf->buf[pos] == '\0' && tok != ROFF_while) {
1.46 schwarze 2741: r->last->endspan = 2;
2742: goto out;
2743: }
2744:
1.110 schwarze 2745: while (buf->buf[pos] == ' ')
1.46 schwarze 2746: pos++;
2747:
2748: /* An opening brace requests multiline scope. */
1.2 schwarze 2749:
1.110 schwarze 2750: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.2 schwarze 2751: r->last->endspan = -1;
2752: pos += 2;
1.144 schwarze 2753: while (buf->buf[pos] == ' ')
2754: pos++;
1.46 schwarze 2755: goto out;
1.80 schwarze 2756: }
1.2 schwarze 2757:
2758: /*
1.46 schwarze 2759: * Anything else following the conditional causes
2760: * single-line scope. Warn if the scope contains
2761: * nothing but trailing whitespace.
1.2 schwarze 2762: */
2763:
1.110 schwarze 2764: if (buf->buf[pos] == '\0')
1.222 schwarze 2765: mandoc_msg(MANDOCERR_COND_EMPTY,
2766: ln, ppos, "%s", roff_name[tok]);
1.2 schwarze 2767:
1.46 schwarze 2768: r->last->endspan = 1;
1.1 schwarze 2769:
1.46 schwarze 2770: out:
1.2 schwarze 2771: *offs = pos;
1.212 schwarze 2772: irc = ROFF_RERUN;
2773: if (tok == ROFF_while)
2774: irc |= ROFF_WHILE;
2775: return irc;
1.1 schwarze 2776: }
2777:
1.212 schwarze 2778: static int
1.7 schwarze 2779: roff_ds(ROFF_ARGS)
2780: {
1.85 schwarze 2781: char *string;
2782: const char *name;
2783: size_t namesz;
1.10 schwarze 2784:
1.123 schwarze 2785: /* Ignore groff compatibility mode for now. */
2786:
2787: if (tok == ROFF_ds1)
2788: tok = ROFF_ds;
2789: else if (tok == ROFF_as1)
2790: tok = ROFF_as;
2791:
1.10 schwarze 2792: /*
1.85 schwarze 2793: * The first word is the name of the string.
2794: * If it is empty or terminated by an escape sequence,
2795: * abort the `ds' request without defining anything.
1.10 schwarze 2796: */
1.7 schwarze 2797:
1.110 schwarze 2798: name = string = buf->buf + pos;
2799: if (*name == '\0')
1.149 schwarze 2800: return ROFF_IGN;
1.7 schwarze 2801:
1.85 schwarze 2802: namesz = roff_getname(r, &string, ln, pos);
1.235 schwarze 2803: switch (name[namesz]) {
2804: case '\\':
1.149 schwarze 2805: return ROFF_IGN;
1.235 schwarze 2806: case '\t':
2807: string = buf->buf + pos + namesz;
2808: break;
2809: default:
2810: break;
2811: }
1.85 schwarze 2812:
2813: /* Read past the initial double-quote, if any. */
1.110 schwarze 2814: if (*string == '"')
1.7 schwarze 2815: string++;
2816:
1.10 schwarze 2817: /* The rest is the value. */
1.85 schwarze 2818: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2819: ROFF_as == tok);
1.183 schwarze 2820: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.149 schwarze 2821: return ROFF_IGN;
1.7 schwarze 2822: }
2823:
1.77 schwarze 2824: /*
2825: * Parse a single operator, one or two characters long.
2826: * If the operator is recognized, return success and advance the
2827: * parse point, else return failure and let the parse point unchanged.
2828: */
2829: static int
2830: roff_getop(const char *v, int *pos, char *res)
2831: {
2832:
2833: *res = v[*pos];
2834:
2835: switch (*res) {
1.80 schwarze 2836: case '+':
2837: case '-':
2838: case '*':
2839: case '/':
2840: case '%':
2841: case '&':
2842: case ':':
1.77 schwarze 2843: break;
2844: case '<':
2845: switch (v[*pos + 1]) {
1.80 schwarze 2846: case '=':
1.77 schwarze 2847: *res = 'l';
2848: (*pos)++;
2849: break;
1.80 schwarze 2850: case '>':
1.77 schwarze 2851: *res = '!';
2852: (*pos)++;
2853: break;
1.80 schwarze 2854: case '?':
1.77 schwarze 2855: *res = 'i';
2856: (*pos)++;
2857: break;
2858: default:
2859: break;
2860: }
2861: break;
2862: case '>':
2863: switch (v[*pos + 1]) {
1.80 schwarze 2864: case '=':
1.77 schwarze 2865: *res = 'g';
2866: (*pos)++;
2867: break;
1.80 schwarze 2868: case '?':
1.77 schwarze 2869: *res = 'a';
2870: (*pos)++;
2871: break;
2872: default:
2873: break;
2874: }
2875: break;
2876: case '=':
2877: if ('=' == v[*pos + 1])
2878: (*pos)++;
2879: break;
2880: default:
1.149 schwarze 2881: return 0;
1.77 schwarze 2882: }
2883: (*pos)++;
2884:
1.149 schwarze 2885: return *res;
1.77 schwarze 2886: }
2887:
2888: /*
2889: * Evaluate either a parenthesized numeric expression
2890: * or a single signed integer number.
2891: */
2892: static int
1.106 schwarze 2893: roff_evalpar(struct roff *r, int ln,
1.133 schwarze 2894: const char *v, int *pos, int *res, int flags)
1.77 schwarze 2895: {
2896:
2897: if ('(' != v[*pos])
1.149 schwarze 2898: return roff_getnum(v, pos, res, flags);
1.77 schwarze 2899:
2900: (*pos)++;
1.133 schwarze 2901: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.149 schwarze 2902: return 0;
1.77 schwarze 2903:
1.79 schwarze 2904: /*
2905: * Omission of the closing parenthesis
2906: * is an error in validation mode,
2907: * but ignored in evaluation mode.
2908: */
2909:
1.77 schwarze 2910: if (')' == v[*pos])
2911: (*pos)++;
1.79 schwarze 2912: else if (NULL == res)
1.149 schwarze 2913: return 0;
1.77 schwarze 2914:
1.149 schwarze 2915: return 1;
1.77 schwarze 2916: }
2917:
2918: /*
2919: * Evaluate a complete numeric expression.
2920: * Proceed left to right, there is no concept of precedence.
2921: */
2922: static int
1.106 schwarze 2923: roff_evalnum(struct roff *r, int ln, const char *v,
1.133 schwarze 2924: int *pos, int *res, int flags)
1.77 schwarze 2925: {
2926: int mypos, operand2;
2927: char operator;
2928:
2929: if (NULL == pos) {
2930: mypos = 0;
2931: pos = &mypos;
2932: }
2933:
1.133 schwarze 2934: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2935: while (isspace((unsigned char)v[*pos]))
2936: (*pos)++;
2937:
1.133 schwarze 2938: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.149 schwarze 2939: return 0;
1.77 schwarze 2940:
2941: while (1) {
1.133 schwarze 2942: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2943: while (isspace((unsigned char)v[*pos]))
2944: (*pos)++;
2945:
2946: if ( ! roff_getop(v, pos, &operator))
2947: break;
2948:
1.133 schwarze 2949: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2950: while (isspace((unsigned char)v[*pos]))
2951: (*pos)++;
2952:
1.133 schwarze 2953: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.149 schwarze 2954: return 0;
1.77 schwarze 2955:
1.133 schwarze 2956: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2957: while (isspace((unsigned char)v[*pos]))
2958: (*pos)++;
1.79 schwarze 2959:
2960: if (NULL == res)
2961: continue;
1.77 schwarze 2962:
2963: switch (operator) {
1.80 schwarze 2964: case '+':
1.77 schwarze 2965: *res += operand2;
2966: break;
1.80 schwarze 2967: case '-':
1.77 schwarze 2968: *res -= operand2;
2969: break;
1.80 schwarze 2970: case '*':
1.77 schwarze 2971: *res *= operand2;
2972: break;
1.80 schwarze 2973: case '/':
1.116 schwarze 2974: if (operand2 == 0) {
1.106 schwarze 2975: mandoc_msg(MANDOCERR_DIVZERO,
1.222 schwarze 2976: ln, *pos, "%s", v);
1.106 schwarze 2977: *res = 0;
2978: break;
2979: }
1.77 schwarze 2980: *res /= operand2;
2981: break;
1.80 schwarze 2982: case '%':
1.116 schwarze 2983: if (operand2 == 0) {
2984: mandoc_msg(MANDOCERR_DIVZERO,
1.222 schwarze 2985: ln, *pos, "%s", v);
1.116 schwarze 2986: *res = 0;
2987: break;
2988: }
1.77 schwarze 2989: *res %= operand2;
2990: break;
1.80 schwarze 2991: case '<':
1.77 schwarze 2992: *res = *res < operand2;
2993: break;
1.80 schwarze 2994: case '>':
1.77 schwarze 2995: *res = *res > operand2;
2996: break;
1.80 schwarze 2997: case 'l':
1.77 schwarze 2998: *res = *res <= operand2;
2999: break;
1.80 schwarze 3000: case 'g':
1.77 schwarze 3001: *res = *res >= operand2;
3002: break;
1.80 schwarze 3003: case '=':
1.77 schwarze 3004: *res = *res == operand2;
3005: break;
1.80 schwarze 3006: case '!':
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 'i':
1.77 schwarze 3016: if (operand2 < *res)
3017: *res = operand2;
3018: break;
1.80 schwarze 3019: case 'a':
1.77 schwarze 3020: if (operand2 > *res)
3021: *res = operand2;
3022: break;
3023: default:
3024: abort();
3025: }
3026: }
1.149 schwarze 3027: return 1;
1.77 schwarze 3028: }
3029:
1.138 schwarze 3030: /* --- register management ------------------------------------------------ */
3031:
1.52 schwarze 3032: void
1.60 schwarze 3033: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.41 schwarze 3034: {
1.199 schwarze 3035: roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
1.198 schwarze 3036: }
3037:
3038: static void
3039: roff_setregn(struct roff *r, const char *name, size_t len,
1.199 schwarze 3040: int val, char sign, int step)
1.198 schwarze 3041: {
1.52 schwarze 3042: struct roffreg *reg;
3043:
3044: /* Search for an existing register with the same name. */
3045: reg = r->regtab;
3046:
1.198 schwarze 3047: while (reg != NULL && (reg->key.sz != len ||
3048: strncmp(reg->key.p, name, len) != 0))
1.52 schwarze 3049: reg = reg->next;
1.41 schwarze 3050:
1.52 schwarze 3051: if (NULL == reg) {
3052: /* Create a new register. */
3053: reg = mandoc_malloc(sizeof(struct roffreg));
1.198 schwarze 3054: reg->key.p = mandoc_strndup(name, len);
3055: reg->key.sz = len;
1.60 schwarze 3056: reg->val = 0;
1.199 schwarze 3057: reg->step = 0;
1.52 schwarze 3058: reg->next = r->regtab;
3059: r->regtab = reg;
3060: }
3061:
1.60 schwarze 3062: if ('+' == sign)
3063: reg->val += val;
3064: else if ('-' == sign)
3065: reg->val -= val;
3066: else
3067: reg->val = val;
1.199 schwarze 3068: if (step != INT_MIN)
3069: reg->step = step;
1.41 schwarze 3070: }
3071:
1.65 schwarze 3072: /*
3073: * Handle some predefined read-only number registers.
3074: * For now, return -1 if the requested register is not predefined;
3075: * in case a predefined read-only register having the value -1
3076: * were to turn up, another special value would have to be chosen.
3077: */
3078: static int
1.145 schwarze 3079: roff_getregro(const struct roff *r, const char *name)
1.65 schwarze 3080: {
3081:
3082: switch (*name) {
1.145 schwarze 3083: case '$': /* Number of arguments of the last macro evaluated. */
1.211 schwarze 3084: return r->mstackpos < 0 ? 0 : r->mstack[r->mstackpos].argc;
1.80 schwarze 3085: case 'A': /* ASCII approximation mode is always off. */
1.149 schwarze 3086: return 0;
1.80 schwarze 3087: case 'g': /* Groff compatibility mode is always on. */
1.149 schwarze 3088: return 1;
1.80 schwarze 3089: case 'H': /* Fixed horizontal resolution. */
1.149 schwarze 3090: return 24;
1.80 schwarze 3091: case 'j': /* Always adjust left margin only. */
1.149 schwarze 3092: return 0;
1.80 schwarze 3093: case 'T': /* Some output device is always defined. */
1.149 schwarze 3094: return 1;
1.80 schwarze 3095: case 'V': /* Fixed vertical resolution. */
1.149 schwarze 3096: return 40;
1.65 schwarze 3097: default:
1.149 schwarze 3098: return -1;
1.65 schwarze 3099: }
3100: }
3101:
1.53 schwarze 3102: int
1.198 schwarze 3103: roff_getreg(struct roff *r, const char *name)
1.41 schwarze 3104: {
1.199 schwarze 3105: return roff_getregn(r, name, strlen(name), '\0');
1.53 schwarze 3106: }
3107:
3108: static int
1.199 schwarze 3109: roff_getregn(struct roff *r, const char *name, size_t len, char sign)
1.53 schwarze 3110: {
3111: struct roffreg *reg;
1.65 schwarze 3112: int val;
3113:
3114: if ('.' == name[0] && 2 == len) {
1.145 schwarze 3115: val = roff_getregro(r, name + 1);
1.65 schwarze 3116: if (-1 != val)
1.149 schwarze 3117: return val;
1.65 schwarze 3118: }
1.53 schwarze 3119:
1.199 schwarze 3120: for (reg = r->regtab; reg; reg = reg->next) {
1.53 schwarze 3121: if (len == reg->key.sz &&
1.199 schwarze 3122: 0 == strncmp(name, reg->key.p, len)) {
3123: switch (sign) {
3124: case '+':
3125: reg->val += reg->step;
3126: break;
3127: case '-':
3128: reg->val -= reg->step;
3129: break;
3130: default:
3131: break;
3132: }
1.149 schwarze 3133: return reg->val;
1.199 schwarze 3134: }
3135: }
1.143 schwarze 3136:
1.199 schwarze 3137: roff_setregn(r, name, len, 0, '\0', INT_MIN);
1.149 schwarze 3138: return 0;
1.143 schwarze 3139: }
3140:
3141: static int
3142: roff_hasregn(const struct roff *r, const char *name, size_t len)
3143: {
3144: struct roffreg *reg;
3145: int val;
3146:
3147: if ('.' == name[0] && 2 == len) {
1.145 schwarze 3148: val = roff_getregro(r, name + 1);
1.143 schwarze 3149: if (-1 != val)
1.149 schwarze 3150: return 1;
1.143 schwarze 3151: }
3152:
3153: for (reg = r->regtab; reg; reg = reg->next)
3154: if (len == reg->key.sz &&
3155: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 3156: return 1;
1.41 schwarze 3157:
1.149 schwarze 3158: return 0;
1.41 schwarze 3159: }
3160:
1.52 schwarze 3161: static void
3162: roff_freereg(struct roffreg *reg)
1.41 schwarze 3163: {
1.52 schwarze 3164: struct roffreg *old_reg;
1.41 schwarze 3165:
1.52 schwarze 3166: while (NULL != reg) {
3167: free(reg->key.p);
3168: old_reg = reg;
3169: reg = reg->next;
3170: free(old_reg);
3171: }
1.41 schwarze 3172: }
1.7 schwarze 3173:
1.212 schwarze 3174: static int
1.6 schwarze 3175: roff_nr(ROFF_ARGS)
1.1 schwarze 3176: {
1.199 schwarze 3177: char *key, *val, *step;
1.85 schwarze 3178: size_t keysz;
1.199 schwarze 3179: int iv, is, len;
1.60 schwarze 3180: char sign;
1.6 schwarze 3181:
1.110 schwarze 3182: key = val = buf->buf + pos;
3183: if (*key == '\0')
1.149 schwarze 3184: return ROFF_IGN;
1.85 schwarze 3185:
3186: keysz = roff_getname(r, &val, ln, pos);
1.235 schwarze 3187: if (key[keysz] == '\\' || key[keysz] == '\t')
1.149 schwarze 3188: return ROFF_IGN;
1.6 schwarze 3189:
1.60 schwarze 3190: sign = *val;
1.110 schwarze 3191: if (sign == '+' || sign == '-')
1.60 schwarze 3192: val++;
3193:
1.199 schwarze 3194: len = 0;
3195: if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
3196: return ROFF_IGN;
3197:
3198: step = val + len;
3199: while (isspace((unsigned char)*step))
3200: step++;
3201: if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)
3202: is = INT_MIN;
1.1 schwarze 3203:
1.199 schwarze 3204: roff_setregn(r, key, keysz, iv, sign, is);
1.149 schwarze 3205: return ROFF_IGN;
1.76 schwarze 3206: }
3207:
1.212 schwarze 3208: static int
1.76 schwarze 3209: roff_rr(ROFF_ARGS)
3210: {
3211: struct roffreg *reg, **prev;
1.85 schwarze 3212: char *name, *cp;
3213: size_t namesz;
1.76 schwarze 3214:
1.110 schwarze 3215: name = cp = buf->buf + pos;
3216: if (*name == '\0')
1.149 schwarze 3217: return ROFF_IGN;
1.85 schwarze 3218: namesz = roff_getname(r, &cp, ln, pos);
3219: name[namesz] = '\0';
1.76 schwarze 3220:
3221: prev = &r->regtab;
3222: while (1) {
3223: reg = *prev;
1.110 schwarze 3224: if (reg == NULL || !strcmp(name, reg->key.p))
1.76 schwarze 3225: break;
3226: prev = ®->next;
3227: }
1.110 schwarze 3228: if (reg != NULL) {
1.76 schwarze 3229: *prev = reg->next;
3230: free(reg->key.p);
3231: free(reg);
3232: }
1.149 schwarze 3233: return ROFF_IGN;
1.29 schwarze 3234: }
3235:
1.138 schwarze 3236: /* --- handler functions for roff requests -------------------------------- */
3237:
1.212 schwarze 3238: static int
1.29 schwarze 3239: roff_rm(ROFF_ARGS)
3240: {
3241: const char *name;
3242: char *cp;
1.85 schwarze 3243: size_t namesz;
1.29 schwarze 3244:
1.110 schwarze 3245: cp = buf->buf + pos;
3246: while (*cp != '\0') {
1.85 schwarze 3247: name = cp;
1.110 schwarze 3248: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.85 schwarze 3249: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.183 schwarze 3250: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.235 schwarze 3251: if (name[namesz] == '\\' || name[namesz] == '\t')
1.85 schwarze 3252: break;
1.29 schwarze 3253: }
1.149 schwarze 3254: return ROFF_IGN;
1.51 schwarze 3255: }
3256:
1.212 schwarze 3257: static int
1.51 schwarze 3258: roff_it(ROFF_ARGS)
3259: {
3260: int iv;
3261:
3262: /* Parse the number of lines. */
1.133 schwarze 3263:
3264: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.222 schwarze 3265: mandoc_msg(MANDOCERR_IT_NONUM,
3266: ln, ppos, "%s", buf->buf + 1);
1.149 schwarze 3267: return ROFF_IGN;
1.51 schwarze 3268: }
3269:
1.134 schwarze 3270: while (isspace((unsigned char)buf->buf[pos]))
3271: pos++;
3272:
3273: /*
3274: * Arm the input line trap.
3275: * Special-casing "an-trap" is an ugly workaround to cope
3276: * with DocBook stupidly fiddling with man(7) internals.
3277: */
1.133 schwarze 3278:
1.51 schwarze 3279: roffit_lines = iv;
1.134 schwarze 3280: roffit_macro = mandoc_strdup(iv != 1 ||
3281: strcmp(buf->buf + pos, "an-trap") ?
3282: buf->buf + pos : "br");
1.149 schwarze 3283: return ROFF_IGN;
1.47 schwarze 3284: }
3285:
1.212 schwarze 3286: static int
1.47 schwarze 3287: roff_Dd(ROFF_ARGS)
3288: {
1.187 schwarze 3289: int mask;
3290: enum roff_tok t, te;
1.99 schwarze 3291:
1.187 schwarze 3292: switch (tok) {
3293: case ROFF_Dd:
3294: tok = MDOC_Dd;
3295: te = MDOC_MAX;
3296: if (r->format == 0)
3297: r->format = MPARSE_MDOC;
3298: mask = MPARSE_MDOC | MPARSE_QUICK;
3299: break;
3300: case ROFF_TH:
3301: tok = MAN_TH;
3302: te = MAN_MAX;
3303: if (r->format == 0)
3304: r->format = MPARSE_MAN;
3305: mask = MPARSE_QUICK;
3306: break;
3307: default:
3308: abort();
3309: }
3310: if ((r->options & mask) == 0)
3311: for (t = tok; t < te; t++)
3312: roff_setstr(r, roff_name[t], NULL, 0);
1.149 schwarze 3313: return ROFF_CONT;
1.14 schwarze 3314: }
3315:
1.212 schwarze 3316: static int
1.27 schwarze 3317: roff_TE(ROFF_ARGS)
3318: {
1.233 schwarze 3319: r->man->flags &= ~ROFF_NONOFILL;
1.193 schwarze 3320: if (r->tbl == NULL) {
1.222 schwarze 3321: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "TE");
1.193 schwarze 3322: return ROFF_IGN;
3323: }
1.218 schwarze 3324: if (tbl_end(r->tbl, 0) == 0) {
1.193 schwarze 3325: r->tbl = NULL;
1.130 schwarze 3326: free(buf->buf);
3327: buf->buf = mandoc_strdup(".sp");
3328: buf->sz = 4;
1.201 schwarze 3329: *offs = 0;
1.149 schwarze 3330: return ROFF_REPARSE;
1.130 schwarze 3331: }
1.193 schwarze 3332: r->tbl = NULL;
1.149 schwarze 3333: return ROFF_IGN;
1.27 schwarze 3334: }
3335:
1.212 schwarze 3336: static int
1.27 schwarze 3337: roff_T_(ROFF_ARGS)
3338: {
3339:
3340: if (NULL == r->tbl)
1.222 schwarze 3341: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "T&");
1.27 schwarze 3342: else
1.168 schwarze 3343: tbl_restart(ln, ppos, r->tbl);
1.27 schwarze 3344:
1.149 schwarze 3345: return ROFF_IGN;
1.27 schwarze 3346: }
3347:
1.102 schwarze 3348: /*
3349: * Handle in-line equation delimiters.
3350: */
1.212 schwarze 3351: static int
1.110 schwarze 3352: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.41 schwarze 3353: {
1.105 schwarze 3354: char *cp1, *cp2;
3355: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.41 schwarze 3356:
1.102 schwarze 3357: /*
3358: * Outside equations, look for an opening delimiter.
3359: * If we are inside an equation, we already know it is
3360: * in-line, or this function wouldn't have been called;
3361: * so look for a closing delimiter.
3362: */
3363:
1.110 schwarze 3364: cp1 = buf->buf + pos;
1.102 schwarze 3365: cp2 = strchr(cp1, r->eqn == NULL ?
3366: r->last_eqn->odelim : r->last_eqn->cdelim);
3367: if (cp2 == NULL)
1.149 schwarze 3368: return ROFF_CONT;
1.102 schwarze 3369:
1.105 schwarze 3370: *cp2++ = '\0';
3371: bef_pr = bef_nl = aft_nl = aft_pr = "";
3372:
3373: /* Handle preceding text, protecting whitespace. */
3374:
1.110 schwarze 3375: if (*buf->buf != '\0') {
1.105 schwarze 3376: if (r->eqn == NULL)
3377: bef_pr = "\\&";
3378: bef_nl = "\n";
3379: }
3380:
3381: /*
3382: * Prepare replacing the delimiter with an equation macro
3383: * and drop leading white space from the equation.
3384: */
1.102 schwarze 3385:
1.105 schwarze 3386: if (r->eqn == NULL) {
3387: while (*cp2 == ' ')
3388: cp2++;
3389: mac = ".EQ";
3390: } else
3391: mac = ".EN";
3392:
3393: /* Handle following text, protecting whitespace. */
3394:
3395: if (*cp2 != '\0') {
3396: aft_nl = "\n";
3397: if (r->eqn != NULL)
3398: aft_pr = "\\&";
3399: }
3400:
3401: /* Do the actual replacement. */
3402:
1.110 schwarze 3403: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.105 schwarze 3404: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.110 schwarze 3405: free(buf->buf);
3406: buf->buf = cp1;
1.102 schwarze 3407:
3408: /* Toggle the in-line state of the eqn subsystem. */
3409:
3410: r->eqn_inline = r->eqn == NULL;
1.149 schwarze 3411: return ROFF_REPARSE;
1.41 schwarze 3412: }
3413:
1.212 schwarze 3414: static int
1.107 schwarze 3415: roff_EQ(ROFF_ARGS)
1.32 schwarze 3416: {
1.191 schwarze 3417: struct roff_node *n;
3418:
1.228 schwarze 3419: if (r->man->meta.macroset == MACROSET_MAN)
1.194 schwarze 3420: man_breakscope(r->man, ROFF_EQ);
1.191 schwarze 3421: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
3422: if (ln > r->man->last->line)
3423: n->flags |= NODE_LINE;
1.220 schwarze 3424: n->eqn = eqn_box_new();
1.191 schwarze 3425: roff_node_append(r->man, n);
3426: r->man->next = ROFF_NEXT_SIBLING;
1.32 schwarze 3427:
1.110 schwarze 3428: assert(r->eqn == NULL);
1.191 schwarze 3429: if (r->last_eqn == NULL)
1.223 schwarze 3430: r->last_eqn = eqn_alloc();
1.191 schwarze 3431: else
3432: eqn_reset(r->last_eqn);
3433: r->eqn = r->last_eqn;
3434: r->eqn->node = n;
1.41 schwarze 3435:
1.110 schwarze 3436: if (buf->buf[pos] != '\0')
1.222 schwarze 3437: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.110 schwarze 3438: ".EQ %s", buf->buf + pos);
1.41 schwarze 3439:
1.149 schwarze 3440: return ROFF_IGN;
1.32 schwarze 3441: }
3442:
1.212 schwarze 3443: static int
1.32 schwarze 3444: roff_EN(ROFF_ARGS)
3445: {
1.191 schwarze 3446: if (r->eqn != NULL) {
3447: eqn_parse(r->eqn);
3448: r->eqn = NULL;
3449: } else
1.222 schwarze 3450: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "EN");
1.191 schwarze 3451: if (buf->buf[pos] != '\0')
1.222 schwarze 3452: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.191 schwarze 3453: "EN %s", buf->buf + pos);
1.149 schwarze 3454: return ROFF_IGN;
1.32 schwarze 3455: }
3456:
1.212 schwarze 3457: static int
1.27 schwarze 3458: roff_TS(ROFF_ARGS)
3459: {
1.193 schwarze 3460: if (r->tbl != NULL) {
1.222 schwarze 3461: mandoc_msg(MANDOCERR_BLK_BROKEN, ln, ppos, "TS breaks TS");
1.218 schwarze 3462: tbl_end(r->tbl, 0);
1.27 schwarze 3463: }
1.233 schwarze 3464: r->man->flags |= ROFF_NONOFILL;
1.223 schwarze 3465: r->tbl = tbl_alloc(ppos, ln, r->last_tbl);
1.218 schwarze 3466: if (r->last_tbl == NULL)
1.193 schwarze 3467: r->first_tbl = r->tbl;
3468: r->last_tbl = r->tbl;
1.169 schwarze 3469: return ROFF_IGN;
3470: }
3471:
1.212 schwarze 3472: static int
1.230 schwarze 3473: roff_noarg(ROFF_ARGS)
3474: {
3475: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3476: man_breakscope(r->man, tok);
3477: if (tok == ROFF_brp)
3478: tok = ROFF_br;
3479: roff_elem_alloc(r->man, ln, ppos, tok);
3480: if (buf->buf[pos] != '\0')
3481: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
3482: "%s %s", roff_name[tok], buf->buf + pos);
3483: if (tok == ROFF_nf)
3484: r->man->flags |= ROFF_NOFILL;
3485: else if (tok == ROFF_fi)
3486: r->man->flags &= ~ROFF_NOFILL;
3487: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3488: r->man->next = ROFF_NEXT_SIBLING;
3489: return ROFF_IGN;
3490: }
3491:
3492: static int
1.169 schwarze 3493: roff_onearg(ROFF_ARGS)
3494: {
3495: struct roff_node *n;
3496: char *cp;
1.177 schwarze 3497: int npos;
1.169 schwarze 3498:
1.174 schwarze 3499: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.192 schwarze 3500: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
3501: tok == ROFF_ti))
1.174 schwarze 3502: man_breakscope(r->man, tok);
3503:
1.181 schwarze 3504: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.177 schwarze 3505: r->man->last = roffce_node;
3506: r->man->next = ROFF_NEXT_SIBLING;
3507: }
3508:
1.169 schwarze 3509: roff_elem_alloc(r->man, ln, ppos, tok);
3510: n = r->man->last;
3511:
3512: cp = buf->buf + pos;
3513: if (*cp != '\0') {
3514: while (*cp != '\0' && *cp != ' ')
3515: cp++;
3516: while (*cp == ' ')
3517: *cp++ = '\0';
3518: if (*cp != '\0')
1.222 schwarze 3519: mandoc_msg(MANDOCERR_ARG_EXCESS,
3520: ln, (int)(cp - buf->buf),
1.169 schwarze 3521: "%s ... %s", roff_name[tok], cp);
3522: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.172 schwarze 3523: }
3524:
1.181 schwarze 3525: if (tok == ROFF_ce || tok == ROFF_rj) {
3526: if (r->man->last->type == ROFFT_ELEM) {
1.177 schwarze 3527: roff_word_alloc(r->man, ln, pos, "1");
3528: r->man->last->flags |= NODE_NOSRC;
3529: }
3530: npos = 0;
3531: if (roff_evalnum(r, ln, r->man->last->string, &npos,
3532: &roffce_lines, 0) == 0) {
1.222 schwarze 3533: mandoc_msg(MANDOCERR_CE_NONUM,
3534: ln, pos, "ce %s", buf->buf + pos);
1.177 schwarze 3535: roffce_lines = 1;
3536: }
3537: if (roffce_lines < 1) {
3538: r->man->last = r->man->last->parent;
3539: roffce_node = NULL;
3540: roffce_lines = 0;
3541: } else
3542: roffce_node = r->man->last->parent;
3543: } else {
3544: n->flags |= NODE_VALID | NODE_ENDED;
3545: r->man->last = n;
3546: }
3547: n->flags |= NODE_LINE;
1.172 schwarze 3548: r->man->next = ROFF_NEXT_SIBLING;
3549: return ROFF_IGN;
3550: }
3551:
1.212 schwarze 3552: static int
1.172 schwarze 3553: roff_manyarg(ROFF_ARGS)
3554: {
3555: struct roff_node *n;
3556: char *sp, *ep;
3557:
3558: roff_elem_alloc(r->man, ln, ppos, tok);
3559: n = r->man->last;
3560:
3561: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3562: while (*ep != '\0' && *ep != ' ')
3563: ep++;
3564: while (*ep == ' ')
3565: *ep++ = '\0';
3566: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.169 schwarze 3567: }
3568:
3569: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3570: r->man->last = n;
3571: r->man->next = ROFF_NEXT_SIBLING;
1.149 schwarze 3572: return ROFF_IGN;
1.123 schwarze 3573: }
3574:
1.212 schwarze 3575: static int
1.183 schwarze 3576: roff_als(ROFF_ARGS)
3577: {
3578: char *oldn, *newn, *end, *value;
3579: size_t oldsz, newsz, valsz;
3580:
3581: newn = oldn = buf->buf + pos;
3582: if (*newn == '\0')
3583: return ROFF_IGN;
3584:
3585: newsz = roff_getname(r, &oldn, ln, pos);
1.235 schwarze 3586: if (newn[newsz] == '\\' || newn[newsz] == '\t' || *oldn == '\0')
1.183 schwarze 3587: return ROFF_IGN;
3588:
3589: end = oldn;
3590: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3591: if (oldsz == 0)
3592: return ROFF_IGN;
3593:
1.210 schwarze 3594: valsz = mandoc_asprintf(&value, ".%.*s \\$@\\\"\n",
1.187 schwarze 3595: (int)oldsz, oldn);
1.183 schwarze 3596: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3597: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3598: free(value);
1.236 schwarze 3599: return ROFF_IGN;
3600: }
3601:
3602: /*
3603: * The .break request only makes sense inside conditionals,
3604: * and that case is already handled in roff_cond_sub().
3605: */
3606: static int
3607: roff_break(ROFF_ARGS)
3608: {
3609: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, pos, "break");
1.168 schwarze 3610: return ROFF_IGN;
1.27 schwarze 3611: }
3612:
1.212 schwarze 3613: static int
1.48 schwarze 3614: roff_cc(ROFF_ARGS)
3615: {
3616: const char *p;
3617:
1.110 schwarze 3618: p = buf->buf + pos;
1.48 schwarze 3619:
1.110 schwarze 3620: if (*p == '\0' || (r->control = *p++) == '.')
1.175 schwarze 3621: r->control = '\0';
1.48 schwarze 3622:
1.110 schwarze 3623: if (*p != '\0')
1.222 schwarze 3624: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.132 schwarze 3625: ln, p - buf->buf, "cc ... %s", p);
1.48 schwarze 3626:
1.213 schwarze 3627: return ROFF_IGN;
3628: }
3629:
3630: static int
3631: roff_char(ROFF_ARGS)
3632: {
3633: const char *p, *kp, *vp;
3634: size_t ksz, vsz;
3635: int font;
3636:
3637: /* Parse the character to be replaced. */
3638:
3639: kp = buf->buf + pos;
3640: p = kp + 1;
3641: if (*kp == '\0' || (*kp == '\\' &&
3642: mandoc_escape(&p, NULL, NULL) != ESCAPE_SPECIAL) ||
3643: (*p != ' ' && *p != '\0')) {
1.222 schwarze 3644: mandoc_msg(MANDOCERR_CHAR_ARG, ln, pos, "char %s", kp);
1.213 schwarze 3645: return ROFF_IGN;
3646: }
3647: ksz = p - kp;
3648: while (*p == ' ')
3649: p++;
3650:
3651: /*
3652: * If the replacement string contains a font escape sequence,
3653: * we have to restore the font at the end.
3654: */
3655:
3656: vp = p;
3657: vsz = strlen(p);
3658: font = 0;
3659: while (*p != '\0') {
3660: if (*p++ != '\\')
3661: continue;
3662: switch (mandoc_escape(&p, NULL, NULL)) {
3663: case ESCAPE_FONT:
3664: case ESCAPE_FONTROMAN:
3665: case ESCAPE_FONTITALIC:
3666: case ESCAPE_FONTBOLD:
3667: case ESCAPE_FONTBI:
1.250 schwarze 3668: case ESCAPE_FONTCR:
3669: case ESCAPE_FONTCB:
3670: case ESCAPE_FONTCI:
1.213 schwarze 3671: case ESCAPE_FONTPREV:
3672: font++;
3673: break;
3674: default:
3675: break;
3676: }
3677: }
3678: if (font > 1)
1.222 schwarze 3679: mandoc_msg(MANDOCERR_CHAR_FONT,
3680: ln, (int)(vp - buf->buf), "%s", vp);
1.213 schwarze 3681:
3682: /*
3683: * Approximate the effect of .char using the .tr tables.
3684: * XXX In groff, .char and .tr interact differently.
3685: */
3686:
3687: if (ksz == 1) {
3688: if (r->xtab == NULL)
3689: r->xtab = mandoc_calloc(128, sizeof(*r->xtab));
3690: assert((unsigned int)*kp < 128);
3691: free(r->xtab[(int)*kp].p);
3692: r->xtab[(int)*kp].sz = mandoc_asprintf(&r->xtab[(int)*kp].p,
3693: "%s%s", vp, font ? "\fP" : "");
3694: } else {
3695: roff_setstrn(&r->xmbtab, kp, ksz, vp, vsz, 0);
3696: if (font)
3697: roff_setstrn(&r->xmbtab, kp, ksz, "\\fP", 3, 1);
3698: }
1.149 schwarze 3699: return ROFF_IGN;
1.48 schwarze 3700: }
3701:
1.212 schwarze 3702: static int
1.175 schwarze 3703: roff_ec(ROFF_ARGS)
3704: {
3705: const char *p;
3706:
3707: p = buf->buf + pos;
3708: if (*p == '\0')
3709: r->escape = '\\';
3710: else {
3711: r->escape = *p;
3712: if (*++p != '\0')
1.222 schwarze 3713: mandoc_msg(MANDOCERR_ARG_EXCESS, ln,
3714: (int)(p - buf->buf), "ec ... %s", p);
1.175 schwarze 3715: }
3716: return ROFF_IGN;
3717: }
3718:
1.212 schwarze 3719: static int
1.175 schwarze 3720: roff_eo(ROFF_ARGS)
3721: {
3722: r->escape = '\0';
3723: if (buf->buf[pos] != '\0')
1.222 schwarze 3724: mandoc_msg(MANDOCERR_ARG_SKIP,
1.175 schwarze 3725: ln, pos, "eo %s", buf->buf + pos);
3726: return ROFF_IGN;
1.202 schwarze 3727: }
3728:
1.212 schwarze 3729: static int
1.202 schwarze 3730: roff_nop(ROFF_ARGS)
3731: {
3732: while (buf->buf[pos] == ' ')
3733: pos++;
3734: *offs = pos;
3735: return ROFF_RERUN;
1.175 schwarze 3736: }
3737:
1.212 schwarze 3738: static int
1.42 schwarze 3739: roff_tr(ROFF_ARGS)
3740: {
3741: const char *p, *first, *second;
3742: size_t fsz, ssz;
3743: enum mandoc_esc esc;
3744:
1.110 schwarze 3745: p = buf->buf + pos;
1.42 schwarze 3746:
1.110 schwarze 3747: if (*p == '\0') {
1.222 schwarze 3748: mandoc_msg(MANDOCERR_REQ_EMPTY, ln, ppos, "tr");
1.149 schwarze 3749: return ROFF_IGN;
1.42 schwarze 3750: }
3751:
1.110 schwarze 3752: while (*p != '\0') {
1.42 schwarze 3753: fsz = ssz = 1;
3754:
3755: first = p++;
1.110 schwarze 3756: if (*first == '\\') {
1.42 schwarze 3757: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3758: if (esc == ESCAPE_ERROR) {
1.222 schwarze 3759: mandoc_msg(MANDOCERR_ESC_BAD, ln,
3760: (int)(p - buf->buf), "%s", first);
1.149 schwarze 3761: return ROFF_IGN;
1.42 schwarze 3762: }
3763: fsz = (size_t)(p - first);
3764: }
3765:
3766: second = p++;
1.110 schwarze 3767: if (*second == '\\') {
1.42 schwarze 3768: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3769: if (esc == ESCAPE_ERROR) {
1.222 schwarze 3770: mandoc_msg(MANDOCERR_ESC_BAD, ln,
3771: (int)(p - buf->buf), "%s", second);
1.149 schwarze 3772: return ROFF_IGN;
1.42 schwarze 3773: }
3774: ssz = (size_t)(p - second);
1.110 schwarze 3775: } else if (*second == '\0') {
1.222 schwarze 3776: mandoc_msg(MANDOCERR_TR_ODD, ln,
3777: (int)(first - buf->buf), "tr %s", first);
1.42 schwarze 3778: second = " ";
3779: p--;
3780: }
3781:
3782: if (fsz > 1) {
1.80 schwarze 3783: roff_setstrn(&r->xmbtab, first, fsz,
3784: second, ssz, 0);
1.42 schwarze 3785: continue;
3786: }
3787:
1.110 schwarze 3788: if (r->xtab == NULL)
1.80 schwarze 3789: r->xtab = mandoc_calloc(128,
3790: sizeof(struct roffstr));
1.42 schwarze 3791:
3792: free(r->xtab[(int)*first].p);
3793: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3794: r->xtab[(int)*first].sz = ssz;
3795: }
3796:
1.149 schwarze 3797: return ROFF_IGN;
1.42 schwarze 3798: }
3799:
1.211 schwarze 3800: /*
3801: * Implementation of the .return request.
3802: * There is no need to call roff_userret() from here.
3803: * The read module will call that after rewinding the reader stack
3804: * to the place from where the current macro was called.
3805: */
1.212 schwarze 3806: static int
1.211 schwarze 3807: roff_return(ROFF_ARGS)
3808: {
3809: if (r->mstackpos >= 0)
1.212 schwarze 3810: return ROFF_IGN | ROFF_USERRET;
1.211 schwarze 3811:
1.222 schwarze 3812: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "return");
1.211 schwarze 3813: return ROFF_IGN;
3814: }
3815:
1.212 schwarze 3816: static int
1.178 schwarze 3817: roff_rn(ROFF_ARGS)
3818: {
3819: const char *value;
3820: char *oldn, *newn, *end;
3821: size_t oldsz, newsz;
1.187 schwarze 3822: int deftype;
1.178 schwarze 3823:
3824: oldn = newn = buf->buf + pos;
3825: if (*oldn == '\0')
3826: return ROFF_IGN;
3827:
3828: oldsz = roff_getname(r, &newn, ln, pos);
1.235 schwarze 3829: if (oldn[oldsz] == '\\' || oldn[oldsz] == '\t' || *newn == '\0')
1.178 schwarze 3830: return ROFF_IGN;
3831:
3832: end = newn;
3833: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3834: if (newsz == 0)
3835: return ROFF_IGN;
3836:
1.187 schwarze 3837: deftype = ROFFDEF_ANY;
3838: value = roff_getstrn(r, oldn, oldsz, &deftype);
3839: switch (deftype) {
3840: case ROFFDEF_USER:
1.178 schwarze 3841: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3842: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3843: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.187 schwarze 3844: break;
3845: case ROFFDEF_PRE:
3846: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3847: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3848: break;
3849: case ROFFDEF_REN:
1.178 schwarze 3850: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3851: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.187 schwarze 3852: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3853: break;
3854: case ROFFDEF_STD:
1.178 schwarze 3855: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.187 schwarze 3856: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3857: break;
3858: default:
3859: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3860: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3861: break;
3862: }
1.178 schwarze 3863: return ROFF_IGN;
3864: }
3865:
1.212 schwarze 3866: static int
1.211 schwarze 3867: roff_shift(ROFF_ARGS)
3868: {
3869: struct mctx *ctx;
3870: int levels, i;
3871:
3872: levels = 1;
3873: if (buf->buf[pos] != '\0' &&
3874: roff_evalnum(r, ln, buf->buf, &pos, &levels, 0) == 0) {
1.222 schwarze 3875: mandoc_msg(MANDOCERR_CE_NONUM,
1.211 schwarze 3876: ln, pos, "shift %s", buf->buf + pos);
3877: levels = 1;
3878: }
3879: if (r->mstackpos < 0) {
1.222 schwarze 3880: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "shift");
1.211 schwarze 3881: return ROFF_IGN;
3882: }
3883: ctx = r->mstack + r->mstackpos;
3884: if (levels > ctx->argc) {
1.222 schwarze 3885: mandoc_msg(MANDOCERR_SHIFT,
1.211 schwarze 3886: ln, pos, "%d, but max is %d", levels, ctx->argc);
3887: levels = ctx->argc;
3888: }
3889: if (levels == 0)
3890: return ROFF_IGN;
3891: for (i = 0; i < levels; i++)
3892: free(ctx->argv[i]);
3893: ctx->argc -= levels;
3894: for (i = 0; i < ctx->argc; i++)
3895: ctx->argv[i] = ctx->argv[i + levels];
3896: return ROFF_IGN;
3897: }
3898:
1.212 schwarze 3899: static int
1.14 schwarze 3900: roff_so(ROFF_ARGS)
3901: {
1.121 schwarze 3902: char *name, *cp;
1.15 schwarze 3903:
1.110 schwarze 3904: name = buf->buf + pos;
1.222 schwarze 3905: mandoc_msg(MANDOCERR_SO, ln, ppos, "so %s", name);
1.14 schwarze 3906:
1.22 schwarze 3907: /*
3908: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3909: * opening anything that's not in our cwd or anything beneath
3910: * it. Thus, explicitly disallow traversing up the file-system
3911: * or using absolute paths.
3912: */
3913:
1.110 schwarze 3914: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.222 schwarze 3915: mandoc_msg(MANDOCERR_SO_PATH, ln, ppos, ".so %s", name);
1.121 schwarze 3916: buf->sz = mandoc_asprintf(&cp,
3917: ".sp\nSee the file %s.\n.sp", name) + 1;
3918: free(buf->buf);
3919: buf->buf = cp;
3920: *offs = 0;
1.149 schwarze 3921: return ROFF_REPARSE;
1.14 schwarze 3922: }
3923:
3924: *offs = pos;
1.149 schwarze 3925: return ROFF_SO;
1.7 schwarze 3926: }
3927:
1.138 schwarze 3928: /* --- user defined strings and macros ------------------------------------ */
3929:
1.212 schwarze 3930: static int
1.16 schwarze 3931: roff_userdef(ROFF_ARGS)
1.12 schwarze 3932: {
1.211 schwarze 3933: struct mctx *ctx;
3934: char *arg, *ap, *dst, *src;
3935: size_t sz;
3936:
1.237 schwarze 3937: /* If the macro is empty, ignore it altogether. */
3938:
3939: if (*r->current_string == '\0')
3940: return ROFF_IGN;
3941:
1.211 schwarze 3942: /* Initialize a new macro stack context. */
3943:
3944: if (++r->mstackpos == r->mstacksz) {
3945: r->mstack = mandoc_recallocarray(r->mstack,
3946: r->mstacksz, r->mstacksz + 8, sizeof(*r->mstack));
3947: r->mstacksz += 8;
3948: }
3949: ctx = r->mstack + r->mstackpos;
3950: ctx->argc = 0;
3951:
3952: /*
3953: * Collect pointers to macro argument strings,
3954: * NUL-terminating them and escaping quotes.
3955: */
3956:
3957: src = buf->buf + pos;
3958: while (*src != '\0') {
3959: if (ctx->argc == ctx->argsz) {
3960: ctx->argsz += 8;
3961: ctx->argv = mandoc_reallocarray(ctx->argv,
3962: ctx->argsz, sizeof(*ctx->argv));
3963: }
1.227 schwarze 3964: arg = roff_getarg(r, &src, ln, &pos);
1.211 schwarze 3965: sz = 1; /* For the terminating NUL. */
3966: for (ap = arg; *ap != '\0'; ap++)
3967: sz += *ap == '"' ? 4 : 1;
3968: ctx->argv[ctx->argc++] = dst = mandoc_malloc(sz);
3969: for (ap = arg; *ap != '\0'; ap++) {
3970: if (*ap == '"') {
3971: memcpy(dst, "\\(dq", 4);
3972: dst += 4;
3973: } else
3974: *dst++ = *ap;
1.16 schwarze 3975: }
1.211 schwarze 3976: *dst = '\0';
1.227 schwarze 3977: free(arg);
1.209 schwarze 3978: }
3979:
1.211 schwarze 3980: /* Replace the macro invocation by the macro definition. */
1.135 schwarze 3981:
1.110 schwarze 3982: free(buf->buf);
1.211 schwarze 3983: buf->buf = mandoc_strdup(r->current_string);
3984: buf->sz = strlen(buf->buf) + 1;
1.120 schwarze 3985: *offs = 0;
1.16 schwarze 3986:
1.237 schwarze 3987: return buf->buf[buf->sz - 2] == '\n' ?
1.212 schwarze 3988: ROFF_REPARSE | ROFF_USERCALL : ROFF_IGN | ROFF_APPEND;
1.12 schwarze 3989: }
1.28 schwarze 3990:
1.178 schwarze 3991: /*
3992: * Calling a high-level macro that was renamed with .rn.
3993: * r->current_string has already been set up by roff_parse().
3994: */
1.212 schwarze 3995: static int
1.178 schwarze 3996: roff_renamed(ROFF_ARGS)
3997: {
3998: char *nbuf;
3999:
1.187 schwarze 4000: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
4001: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.178 schwarze 4002: free(buf->buf);
4003: buf->buf = nbuf;
1.201 schwarze 4004: *offs = 0;
1.178 schwarze 4005: return ROFF_CONT;
4006: }
4007:
1.234 schwarze 4008: /*
4009: * Measure the length in bytes of the roff identifier at *cpp
4010: * and advance the pointer to the next word.
4011: */
1.85 schwarze 4012: static size_t
1.28 schwarze 4013: roff_getname(struct roff *r, char **cpp, int ln, int pos)
4014: {
4015: char *name, *cp;
1.85 schwarze 4016: size_t namesz;
1.28 schwarze 4017:
4018: name = *cpp;
1.234 schwarze 4019: if (*name == '\0')
1.149 schwarze 4020: return 0;
1.28 schwarze 4021:
1.234 schwarze 4022: /* Advance cp to the byte after the end of the name. */
4023:
1.85 schwarze 4024: for (cp = name; 1; cp++) {
1.234 schwarze 4025: namesz = cp - name;
1.235 schwarze 4026: if (*cp == '\0')
1.85 schwarze 4027: break;
1.235 schwarze 4028: if (*cp == ' ' || *cp == '\t') {
4029: cp++;
4030: break;
4031: }
1.234 schwarze 4032: if (*cp != '\\')
1.28 schwarze 4033: continue;
1.234 schwarze 4034: if (cp[1] == '{' || cp[1] == '}')
1.88 schwarze 4035: break;
1.234 schwarze 4036: if (*++cp == '\\')
1.28 schwarze 4037: continue;
1.222 schwarze 4038: mandoc_msg(MANDOCERR_NAMESC, ln, pos,
1.97 schwarze 4039: "%.*s", (int)(cp - name + 1), name);
1.85 schwarze 4040: mandoc_escape((const char **)&cp, NULL, NULL);
4041: break;
1.28 schwarze 4042: }
4043:
4044: /* Read past spaces. */
1.234 schwarze 4045:
4046: while (*cp == ' ')
1.28 schwarze 4047: cp++;
4048:
4049: *cpp = cp;
1.149 schwarze 4050: return namesz;
1.28 schwarze 4051: }
4052:
1.16 schwarze 4053: /*
4054: * Store *string into the user-defined string called *name.
4055: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.66 schwarze 4056: * append == 0: replace mode
4057: * append == 1: single-line append mode
4058: * append == 2: multiline append mode, append '\n' after each call
1.16 schwarze 4059: */
1.8 schwarze 4060: static void
1.16 schwarze 4061: roff_setstr(struct roff *r, const char *name, const char *string,
1.66 schwarze 4062: int append)
1.7 schwarze 4063: {
1.187 schwarze 4064: size_t namesz;
1.42 schwarze 4065:
1.187 schwarze 4066: namesz = strlen(name);
4067: roff_setstrn(&r->strtab, name, namesz, string,
1.80 schwarze 4068: string ? strlen(string) : 0, append);
1.187 schwarze 4069: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.42 schwarze 4070: }
4071:
4072: static void
4073: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.66 schwarze 4074: const char *string, size_t stringsz, int append)
1.42 schwarze 4075: {
4076: struct roffkv *n;
4077: char *c;
4078: int i;
4079: size_t oldch, newch;
1.7 schwarze 4080:
1.16 schwarze 4081: /* Search for an existing string with the same name. */
1.42 schwarze 4082: n = *r;
4083:
1.84 schwarze 4084: while (n && (namesz != n->key.sz ||
4085: strncmp(n->key.p, name, namesz)))
1.7 schwarze 4086: n = n->next;
1.8 schwarze 4087:
4088: if (NULL == n) {
1.16 schwarze 4089: /* Create a new string table entry. */
1.42 schwarze 4090: n = mandoc_malloc(sizeof(struct roffkv));
4091: n->key.p = mandoc_strndup(name, namesz);
4092: n->key.sz = namesz;
4093: n->val.p = NULL;
4094: n->val.sz = 0;
4095: n->next = *r;
4096: *r = n;
1.66 schwarze 4097: } else if (0 == append) {
1.42 schwarze 4098: free(n->val.p);
4099: n->val.p = NULL;
4100: n->val.sz = 0;
1.16 schwarze 4101: }
4102:
4103: if (NULL == string)
4104: return;
4105:
4106: /*
4107: * One additional byte for the '\n' in multiline mode,
4108: * and one for the terminating '\0'.
4109: */
1.66 schwarze 4110: newch = stringsz + (1 < append ? 2u : 1u);
1.42 schwarze 4111:
4112: if (NULL == n->val.p) {
4113: n->val.p = mandoc_malloc(newch);
4114: *n->val.p = '\0';
1.16 schwarze 4115: oldch = 0;
4116: } else {
1.42 schwarze 4117: oldch = n->val.sz;
4118: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.16 schwarze 4119: }
4120:
4121: /* Skip existing content in the destination buffer. */
1.42 schwarze 4122: c = n->val.p + (int)oldch;
1.16 schwarze 4123:
4124: /* Append new content to the destination buffer. */
1.42 schwarze 4125: i = 0;
4126: while (i < (int)stringsz) {
1.16 schwarze 4127: /*
4128: * Rudimentary roff copy mode:
4129: * Handle escaped backslashes.
4130: */
1.42 schwarze 4131: if ('\\' == string[i] && '\\' == string[i + 1])
4132: i++;
4133: *c++ = string[i++];
1.16 schwarze 4134: }
1.8 schwarze 4135:
1.16 schwarze 4136: /* Append terminating bytes. */
1.66 schwarze 4137: if (1 < append)
1.16 schwarze 4138: *c++ = '\n';
1.42 schwarze 4139:
1.16 schwarze 4140: *c = '\0';
1.42 schwarze 4141: n->val.sz = (int)(c - n->val.p);
1.7 schwarze 4142: }
4143:
1.8 schwarze 4144: static const char *
1.197 schwarze 4145: roff_getstrn(struct roff *r, const char *name, size_t len,
1.187 schwarze 4146: int *deftype)
1.7 schwarze 4147: {
1.187 schwarze 4148: const struct roffkv *n;
1.197 schwarze 4149: int found, i;
1.187 schwarze 4150: enum roff_tok tok;
4151:
1.197 schwarze 4152: found = 0;
4153: for (n = r->strtab; n != NULL; n = n->next) {
4154: if (strncmp(name, n->key.p, len) != 0 ||
4155: n->key.p[len] != '\0' || n->val.p == NULL)
4156: continue;
4157: if (*deftype & ROFFDEF_USER) {
4158: *deftype = ROFFDEF_USER;
4159: return n->val.p;
4160: } else {
4161: found = 1;
4162: break;
4163: }
4164: }
4165: for (n = r->rentab; n != NULL; n = n->next) {
4166: if (strncmp(name, n->key.p, len) != 0 ||
4167: n->key.p[len] != '\0' || n->val.p == NULL)
4168: continue;
4169: if (*deftype & ROFFDEF_REN) {
4170: *deftype = ROFFDEF_REN;
4171: return n->val.p;
4172: } else {
4173: found = 1;
4174: break;
1.187 schwarze 4175: }
4176: }
1.197 schwarze 4177: for (i = 0; i < PREDEFS_MAX; i++) {
4178: if (strncmp(name, predefs[i].name, len) != 0 ||
4179: predefs[i].name[len] != '\0')
4180: continue;
4181: if (*deftype & ROFFDEF_PRE) {
4182: *deftype = ROFFDEF_PRE;
4183: return predefs[i].str;
4184: } else {
4185: found = 1;
4186: break;
1.187 schwarze 4187: }
4188: }
1.228 schwarze 4189: if (r->man->meta.macroset != MACROSET_MAN) {
1.197 schwarze 4190: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
4191: if (strncmp(name, roff_name[tok], len) != 0 ||
4192: roff_name[tok][len] != '\0')
4193: continue;
4194: if (*deftype & ROFFDEF_STD) {
4195: *deftype = ROFFDEF_STD;
4196: return NULL;
4197: } else {
4198: found = 1;
4199: break;
1.187 schwarze 4200: }
4201: }
4202: }
1.228 schwarze 4203: if (r->man->meta.macroset != MACROSET_MDOC) {
1.197 schwarze 4204: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
4205: if (strncmp(name, roff_name[tok], len) != 0 ||
4206: roff_name[tok][len] != '\0')
4207: continue;
4208: if (*deftype & ROFFDEF_STD) {
4209: *deftype = ROFFDEF_STD;
4210: return NULL;
4211: } else {
4212: found = 1;
4213: break;
1.187 schwarze 4214: }
4215: }
1.197 schwarze 4216: }
4217:
4218: if (found == 0 && *deftype != ROFFDEF_ANY) {
4219: if (*deftype & ROFFDEF_REN) {
4220: /*
4221: * This might still be a request,
4222: * so do not treat it as undefined yet.
4223: */
4224: *deftype = ROFFDEF_UNDEF;
4225: return NULL;
1.187 schwarze 4226: }
1.197 schwarze 4227:
4228: /* Using an undefined string defines it to be empty. */
4229:
4230: roff_setstrn(&r->strtab, name, len, "", 0, 0);
4231: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.187 schwarze 4232: }
1.197 schwarze 4233:
1.187 schwarze 4234: *deftype = 0;
1.149 schwarze 4235: return NULL;
1.7 schwarze 4236: }
4237:
1.8 schwarze 4238: static void
1.42 schwarze 4239: roff_freestr(struct roffkv *r)
1.7 schwarze 4240: {
1.42 schwarze 4241: struct roffkv *n, *nn;
1.7 schwarze 4242:
1.42 schwarze 4243: for (n = r; n; n = nn) {
4244: free(n->key.p);
4245: free(n->val.p);
1.7 schwarze 4246: nn = n->next;
4247: free(n);
4248: }
1.27 schwarze 4249: }
1.138 schwarze 4250:
4251: /* --- accessors and utility functions ------------------------------------ */
1.42 schwarze 4252:
4253: /*
4254: * Duplicate an input string, making the appropriate character
4255: * conversations (as stipulated by `tr') along the way.
4256: * Returns a heap-allocated string with all the replacements made.
4257: */
4258: char *
4259: roff_strdup(const struct roff *r, const char *p)
4260: {
4261: const struct roffkv *cp;
4262: char *res;
4263: const char *pp;
4264: size_t ssz, sz;
4265: enum mandoc_esc esc;
4266:
4267: if (NULL == r->xmbtab && NULL == r->xtab)
1.149 schwarze 4268: return mandoc_strdup(p);
1.42 schwarze 4269: else if ('\0' == *p)
1.149 schwarze 4270: return mandoc_strdup("");
1.42 schwarze 4271:
4272: /*
4273: * Step through each character looking for term matches
4274: * (remember that a `tr' can be invoked with an escape, which is
4275: * a glyph but the escape is multi-character).
4276: * We only do this if the character hash has been initialised
4277: * and the string is >0 length.
4278: */
4279:
4280: res = NULL;
4281: ssz = 0;
4282:
4283: while ('\0' != *p) {
1.161 schwarze 4284: assert((unsigned int)*p < 128);
4285: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.42 schwarze 4286: sz = r->xtab[(int)*p].sz;
4287: res = mandoc_realloc(res, ssz + sz + 1);
4288: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
4289: ssz += sz;
4290: p++;
4291: continue;
4292: } else if ('\\' != *p) {
4293: res = mandoc_realloc(res, ssz + 2);
4294: res[ssz++] = *p++;
4295: continue;
4296: }
4297:
4298: /* Search for term matches. */
4299: for (cp = r->xmbtab; cp; cp = cp->next)
4300: if (0 == strncmp(p, cp->key.p, cp->key.sz))
4301: break;
4302:
4303: if (NULL != cp) {
4304: /*
4305: * A match has been found.
4306: * Append the match to the array and move
4307: * forward by its keysize.
4308: */
1.80 schwarze 4309: res = mandoc_realloc(res,
4310: ssz + cp->val.sz + 1);
1.42 schwarze 4311: memcpy(res + ssz, cp->val.p, cp->val.sz);
4312: ssz += cp->val.sz;
4313: p += (int)cp->key.sz;
4314: continue;
4315: }
4316:
4317: /*
4318: * Handle escapes carefully: we need to copy
4319: * over just the escape itself, or else we might
4320: * do replacements within the escape itself.
4321: * Make sure to pass along the bogus string.
4322: */
4323: pp = p++;
4324: esc = mandoc_escape(&p, NULL, NULL);
4325: if (ESCAPE_ERROR == esc) {
4326: sz = strlen(pp);
4327: res = mandoc_realloc(res, ssz + sz + 1);
4328: memcpy(res + ssz, pp, sz);
4329: break;
4330: }
1.80 schwarze 4331: /*
4332: * We bail out on bad escapes.
1.42 schwarze 4333: * No need to warn: we already did so when
1.227 schwarze 4334: * roff_expand() was called.
1.42 schwarze 4335: */
4336: sz = (int)(p - pp);
4337: res = mandoc_realloc(res, ssz + sz + 1);
4338: memcpy(res + ssz, pp, sz);
4339: ssz += sz;
4340: }
4341:
4342: res[(int)ssz] = '\0';
1.149 schwarze 4343: return res;
1.99 schwarze 4344: }
4345:
4346: int
4347: roff_getformat(const struct roff *r)
4348: {
4349:
1.149 schwarze 4350: return r->format;
1.48 schwarze 4351: }
4352:
4353: /*
1.80 schwarze 4354: * Find out whether a line is a macro line or not.
1.48 schwarze 4355: * If it is, adjust the current position and return one; if it isn't,
4356: * return zero and don't change the current position.
4357: * If the control character has been set with `.cc', then let that grain
4358: * precedence.
4359: * This is slighly contrary to groff, where using the non-breaking
4360: * control character when `cc' has been invoked will cause the
4361: * non-breaking macro contents to be printed verbatim.
4362: */
4363: int
4364: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
4365: {
4366: int pos;
4367:
4368: pos = *ppos;
4369:
1.175 schwarze 4370: if (r->control != '\0' && cp[pos] == r->control)
1.48 schwarze 4371: pos++;
1.175 schwarze 4372: else if (r->control != '\0')
1.149 schwarze 4373: return 0;
1.48 schwarze 4374: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
4375: pos += 2;
4376: else if ('.' == cp[pos] || '\'' == cp[pos])
4377: pos++;
4378: else
1.149 schwarze 4379: return 0;
1.48 schwarze 4380:
4381: while (' ' == cp[pos] || '\t' == cp[pos])
4382: pos++;
4383:
4384: *ppos = pos;
1.149 schwarze 4385: return 1;
1.1 schwarze 4386: }
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