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