Annotation of mandoc/roff.c, Revision 1.386
1.386 ! schwarze 1: /* $Id: roff.c,v 1.385 2022/04/30 11:32:42 schwarze Exp $ */
1.1 kristaps 2: /*
1.381 schwarze 3: * Copyright (c) 2010-2015, 2017-2022 Ingo Schwarze <schwarze@openbsd.org>
1.267 schwarze 4: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.1 kristaps 5: *
6: * Permission to use, copy, modify, and distribute this software for any
1.66 kristaps 7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
1.1 kristaps 9: *
1.106 kristaps 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.66 kristaps 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.106 kristaps 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.66 kristaps 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.
1.372 schwarze 17: *
18: * Implementation of the roff(7) parser for mandoc(1).
1.1 kristaps 19: */
1.66 kristaps 20: #include "config.h"
1.225 schwarze 21:
22: #include <sys/types.h>
1.30 kristaps 23:
1.67 kristaps 24: #include <assert.h>
1.85 kristaps 25: #include <ctype.h>
1.245 schwarze 26: #include <limits.h>
1.295 schwarze 27: #include <stddef.h>
28: #include <stdint.h>
1.178 schwarze 29: #include <stdio.h>
1.1 kristaps 30: #include <stdlib.h>
1.67 kristaps 31: #include <string.h>
1.1 kristaps 32:
1.201 schwarze 33: #include "mandoc_aux.h"
1.295 schwarze 34: #include "mandoc_ohash.h"
1.345 schwarze 35: #include "mandoc.h"
1.265 schwarze 36: #include "roff.h"
1.349 schwarze 37: #include "mandoc_parse.h"
1.226 schwarze 38: #include "libmandoc.h"
1.266 schwarze 39: #include "roff_int.h"
1.346 schwarze 40: #include "tbl_parse.h"
1.347 schwarze 41: #include "eqn_parse.h"
1.82 kristaps 42:
1.355 schwarze 43: /*
44: * ASCII_ESC is used to signal from roff_getarg() to roff_expand()
45: * that an escape sequence resulted from copy-in processing and
46: * needs to be checked or interpolated. As it is used nowhere
47: * else, it is defined here rather than in a header file.
48: */
49: #define ASCII_ESC 27
50:
1.170 schwarze 51: /* Maximum number of string expansions per line, to break infinite loops. */
52: #define EXPAND_LIMIT 1000
53:
1.315 schwarze 54: /* Types of definitions of macros and strings. */
55: #define ROFFDEF_USER (1 << 1) /* User-defined. */
56: #define ROFFDEF_PRE (1 << 2) /* Predefined. */
57: #define ROFFDEF_REN (1 << 3) /* Renamed standard macro. */
58: #define ROFFDEF_STD (1 << 4) /* mdoc(7) or man(7) macro. */
59: #define ROFFDEF_ANY (ROFFDEF_USER | ROFFDEF_PRE | \
60: ROFFDEF_REN | ROFFDEF_STD)
1.325 schwarze 61: #define ROFFDEF_UNDEF (1 << 5) /* Completely undefined. */
1.315 schwarze 62:
1.266 schwarze 63: /* --- data types --------------------------------------------------------- */
64:
1.147 kristaps 65: /*
1.167 kristaps 66: * An incredibly-simple string buffer.
67: */
1.94 kristaps 68: struct roffstr {
1.167 kristaps 69: char *p; /* nil-terminated buffer */
70: size_t sz; /* saved strlen(p) */
1.166 kristaps 71: };
72:
73: /*
1.167 kristaps 74: * A key-value roffstr pair as part of a singly-linked list.
1.166 kristaps 75: */
76: struct roffkv {
77: struct roffstr key;
78: struct roffstr val;
79: struct roffkv *next; /* next in list */
1.94 kristaps 80: };
81:
1.180 schwarze 82: /*
83: * A single number register as part of a singly-linked list.
84: */
85: struct roffreg {
86: struct roffstr key;
1.181 schwarze 87: int val;
1.327 schwarze 88: int step;
1.180 schwarze 89: struct roffreg *next;
90: };
91:
1.295 schwarze 92: /*
93: * Association of request and macro names with token IDs.
94: */
95: struct roffreq {
96: enum roff_tok tok;
97: char name[];
98: };
99:
1.339 schwarze 100: /*
101: * A macro processing context.
102: * More than one is needed when macro calls are nested.
103: */
104: struct mctx {
105: char **argv;
106: int argc;
107: int argsz;
108: };
109:
1.67 kristaps 110: struct roff {
1.296 schwarze 111: struct roff_man *man; /* mdoc or man parser */
1.67 kristaps 112: struct roffnode *last; /* leaf of stack */
1.339 schwarze 113: struct mctx *mstack; /* stack of macro contexts */
1.223 schwarze 114: int *rstack; /* stack of inverted `ie' values */
1.295 schwarze 115: struct ohash *reqtab; /* request lookup table */
1.180 schwarze 116: struct roffreg *regtab; /* number registers */
1.166 kristaps 117: struct roffkv *strtab; /* user-defined strings & macros */
1.306 schwarze 118: struct roffkv *rentab; /* renamed strings & macros */
1.167 kristaps 119: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
120: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.106 kristaps 121: const char *current_string; /* value of last called user macro */
1.118 kristaps 122: struct tbl_node *first_tbl; /* first table parsed */
123: struct tbl_node *last_tbl; /* last table parsed */
124: struct tbl_node *tbl; /* current table being parsed */
1.319 schwarze 125: struct eqn_node *last_eqn; /* equation parser */
126: struct eqn_node *eqn; /* active equation parser */
1.230 schwarze 127: int eqn_inline; /* current equation is inline */
1.223 schwarze 128: int options; /* parse options */
1.339 schwarze 129: int mstacksz; /* current size of mstack */
130: int mstackpos; /* position in mstack */
1.223 schwarze 131: int rstacksz; /* current size limit of rstack */
132: int rstackpos; /* position in rstack */
1.227 schwarze 133: int format; /* current file in mdoc or man format */
1.223 schwarze 134: char control; /* control character */
1.303 schwarze 135: char escape; /* escape character */
1.79 kristaps 136: };
137:
1.364 schwarze 138: /*
139: * A macro definition, condition, or ignored block.
140: */
1.67 kristaps 141: struct roffnode {
1.294 schwarze 142: enum roff_tok tok; /* type of node */
1.67 kristaps 143: struct roffnode *parent; /* up one in stack */
144: int line; /* parse line */
145: int col; /* parse col */
1.106 kristaps 146: char *name; /* node name, e.g. macro name */
1.364 schwarze 147: char *end; /* custom end macro of the block */
148: int endspan; /* scope to: 1=eol 2=next line -1=\} */
149: int rule; /* content is: 1=evaluated 0=skipped */
1.67 kristaps 150: };
151:
152: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.294 schwarze 153: enum roff_tok tok, /* tok of macro */ \
1.238 schwarze 154: struct buf *buf, /* input buffer */ \
1.67 kristaps 155: int ln, /* parse line */ \
1.75 kristaps 156: int ppos, /* original pos in buffer */ \
157: int pos, /* current pos in buffer */ \
1.74 kristaps 158: int *offs /* reset offset of buffer data */
1.67 kristaps 159:
1.340 schwarze 160: typedef int (*roffproc)(ROFF_ARGS);
1.67 kristaps 161:
162: struct roffmac {
1.79 kristaps 163: roffproc proc; /* process new macro */
164: roffproc text; /* process as child text of macro */
165: roffproc sub; /* process as child of macro */
166: int flags;
167: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.67 kristaps 168: };
169:
1.141 kristaps 170: struct predef {
171: const char *name; /* predefined input name */
172: const char *str; /* replacement symbol */
173: };
174:
175: #define PREDEF(__name, __str) \
176: { (__name), (__str) },
177:
1.266 schwarze 178: /* --- function prototypes ------------------------------------------------ */
179:
1.340 schwarze 180: static int roffnode_cleanscope(struct roff *);
181: static int roffnode_pop(struct roff *);
1.294 schwarze 182: static void roffnode_push(struct roff *, enum roff_tok,
1.155 kristaps 183: const char *, int, int);
1.346 schwarze 184: static void roff_addtbl(struct roff_man *, int, struct tbl_node *);
1.340 schwarze 185: static int roff_als(ROFF_ARGS);
186: static int roff_block(ROFF_ARGS);
187: static int roff_block_text(ROFF_ARGS);
188: static int roff_block_sub(ROFF_ARGS);
1.364 schwarze 189: static int roff_break(ROFF_ARGS);
1.340 schwarze 190: static int roff_cblock(ROFF_ARGS);
191: static int roff_cc(ROFF_ARGS);
192: static int roff_ccond(struct roff *, int, int);
1.341 schwarze 193: static int roff_char(ROFF_ARGS);
1.340 schwarze 194: static int roff_cond(ROFF_ARGS);
1.375 schwarze 195: static int roff_cond_checkend(ROFF_ARGS);
1.340 schwarze 196: static int roff_cond_text(ROFF_ARGS);
197: static int roff_cond_sub(ROFF_ARGS);
198: static int roff_ds(ROFF_ARGS);
199: static int roff_ec(ROFF_ARGS);
200: static int roff_eo(ROFF_ARGS);
201: static int roff_eqndelim(struct roff *, struct buf *, int);
1.372 schwarze 202: static int roff_evalcond(struct roff *, int, char *, int *);
1.234 kristaps 203: static int roff_evalnum(struct roff *, int,
204: const char *, int *, int *, int);
205: static int roff_evalpar(struct roff *, int,
1.261 schwarze 206: const char *, int *, int *, int);
1.198 schwarze 207: static int roff_evalstrcond(const char *, int *);
1.355 schwarze 208: static int roff_expand(struct roff *, struct buf *,
209: int, int, char);
1.155 kristaps 210: static void roff_free1(struct roff *);
1.180 schwarze 211: static void roff_freereg(struct roffreg *);
1.167 kristaps 212: static void roff_freestr(struct roffkv *);
1.212 schwarze 213: static size_t roff_getname(struct roff *, char **, int, int);
1.261 schwarze 214: static int roff_getnum(const char *, int *, int *, int);
1.184 schwarze 215: static int roff_getop(const char *, int *, char *);
1.327 schwarze 216: static int roff_getregn(struct roff *,
217: const char *, size_t, char);
1.273 schwarze 218: static int roff_getregro(const struct roff *,
219: const char *name);
1.325 schwarze 220: static const char *roff_getstrn(struct roff *,
1.315 schwarze 221: const char *, size_t, int *);
1.271 schwarze 222: static int roff_hasregn(const struct roff *,
223: const char *, size_t);
1.340 schwarze 224: static int roff_insec(ROFF_ARGS);
225: static int roff_it(ROFF_ARGS);
226: static int roff_line_ignore(ROFF_ARGS);
1.265 schwarze 227: static void roff_man_alloc1(struct roff_man *);
228: static void roff_man_free1(struct roff_man *);
1.340 schwarze 229: static int roff_manyarg(ROFF_ARGS);
1.384 schwarze 230: static int roff_mc(ROFF_ARGS);
1.358 schwarze 231: static int roff_noarg(ROFF_ARGS);
1.340 schwarze 232: static int roff_nop(ROFF_ARGS);
233: static int roff_nr(ROFF_ARGS);
234: static int roff_onearg(ROFF_ARGS);
1.294 schwarze 235: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.214 schwarze 236: int, int);
1.340 schwarze 237: static int roff_parsetext(struct roff *, struct buf *,
1.305 schwarze 238: int, int *);
1.340 schwarze 239: static int roff_renamed(ROFF_ARGS);
1.386 ! schwarze 240: static int roff_req_or_macro(ROFF_ARGS);
1.340 schwarze 241: static int roff_return(ROFF_ARGS);
242: static int roff_rm(ROFF_ARGS);
243: static int roff_rn(ROFF_ARGS);
244: static int roff_rr(ROFF_ARGS);
1.326 schwarze 245: static void roff_setregn(struct roff *, const char *,
1.327 schwarze 246: size_t, int, char, int);
1.94 kristaps 247: static void roff_setstr(struct roff *,
1.106 kristaps 248: const char *, const char *, int);
1.207 schwarze 249: static void roff_setstrn(struct roffkv **, const char *,
1.164 kristaps 250: size_t, const char *, size_t, int);
1.340 schwarze 251: static int roff_shift(ROFF_ARGS);
252: static int roff_so(ROFF_ARGS);
253: static int roff_tr(ROFF_ARGS);
254: static int roff_Dd(ROFF_ARGS);
255: static int roff_TE(ROFF_ARGS);
256: static int roff_TS(ROFF_ARGS);
257: static int roff_EQ(ROFF_ARGS);
258: static int roff_EN(ROFF_ARGS);
259: static int roff_T_(ROFF_ARGS);
260: static int roff_unsupp(ROFF_ARGS);
261: static int roff_userdef(ROFF_ARGS);
1.67 kristaps 262:
1.266 schwarze 263: /* --- constant data ------------------------------------------------------ */
264:
1.261 schwarze 265: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
266: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
267:
1.294 schwarze 268: const char *__roff_name[MAN_MAX + 1] = {
1.358 schwarze 269: "br", "ce", "fi", "ft",
270: "ll", "mc", "nf",
271: "po", "rj", "sp",
1.312 schwarze 272: "ta", "ti", NULL,
1.294 schwarze 273: "ab", "ad", "af", "aln",
274: "als", "am", "am1", "ami",
275: "ami1", "as", "as1", "asciify",
276: "backtrace", "bd", "bleedat", "blm",
277: "box", "boxa", "bp", "BP",
278: "break", "breakchar", "brnl", "brp",
1.305 schwarze 279: "brpnl", "c2", "cc",
1.294 schwarze 280: "cf", "cflags", "ch", "char",
281: "chop", "class", "close", "CL",
282: "color", "composite", "continue", "cp",
283: "cropat", "cs", "cu", "da",
284: "dch", "Dd", "de", "de1",
285: "defcolor", "dei", "dei1", "device",
286: "devicem", "di", "do", "ds",
287: "ds1", "dwh", "dt", "ec",
288: "ecr", "ecs", "el", "em",
289: "EN", "eo", "EP", "EQ",
290: "errprint", "ev", "evc", "ex",
291: "fallback", "fam", "fc", "fchar",
292: "fcolor", "fdeferlig", "feature", "fkern",
293: "fl", "flig", "fp", "fps",
294: "fschar", "fspacewidth", "fspecial", "ftr",
295: "fzoom", "gcolor", "hc", "hcode",
296: "hidechar", "hla", "hlm", "hpf",
297: "hpfa", "hpfcode", "hw", "hy",
298: "hylang", "hylen", "hym", "hypp",
299: "hys", "ie", "if", "ig",
300: "index", "it", "itc", "IX",
301: "kern", "kernafter", "kernbefore", "kernpair",
302: "lc", "lc_ctype", "lds", "length",
303: "letadj", "lf", "lg", "lhang",
304: "linetabs", "lnr", "lnrf", "lpfx",
1.304 schwarze 305: "ls", "lsm", "lt",
1.294 schwarze 306: "mediasize", "minss", "mk", "mso",
307: "na", "ne", "nh", "nhychar",
308: "nm", "nn", "nop", "nr",
309: "nrf", "nroff", "ns", "nx",
310: "open", "opena", "os", "output",
311: "padj", "papersize", "pc", "pev",
312: "pi", "PI", "pl", "pm",
1.312 schwarze 313: "pn", "pnr", "ps",
1.294 schwarze 314: "psbb", "pshape", "pso", "ptr",
315: "pvs", "rchar", "rd", "recursionlimit",
1.309 schwarze 316: "return", "rfschar", "rhang",
1.294 schwarze 317: "rm", "rn", "rnn", "rr",
318: "rs", "rt", "schar", "sentchar",
319: "shc", "shift", "sizes", "so",
320: "spacewidth", "special", "spreadwarn", "ss",
321: "sty", "substring", "sv", "sy",
1.300 schwarze 322: "T&", "tc", "TE",
1.301 schwarze 323: "TH", "tkf", "tl",
1.294 schwarze 324: "tm", "tm1", "tmc", "tr",
325: "track", "transchar", "trf", "trimat",
326: "trin", "trnt", "troff", "TS",
327: "uf", "ul", "unformat", "unwatch",
328: "unwatchn", "vpt", "vs", "warn",
329: "warnscale", "watch", "watchlength", "watchn",
330: "wh", "while", "write", "writec",
331: "writem", "xflag", ".", NULL,
1.306 schwarze 332: NULL, "text",
1.294 schwarze 333: "Dd", "Dt", "Os", "Sh",
334: "Ss", "Pp", "D1", "Dl",
335: "Bd", "Ed", "Bl", "El",
336: "It", "Ad", "An", "Ap",
337: "Ar", "Cd", "Cm", "Dv",
338: "Er", "Ev", "Ex", "Fa",
339: "Fd", "Fl", "Fn", "Ft",
340: "Ic", "In", "Li", "Nd",
341: "Nm", "Op", "Ot", "Pa",
342: "Rv", "St", "Va", "Vt",
343: "Xr", "%A", "%B", "%D",
344: "%I", "%J", "%N", "%O",
345: "%P", "%R", "%T", "%V",
346: "Ac", "Ao", "Aq", "At",
347: "Bc", "Bf", "Bo", "Bq",
348: "Bsx", "Bx", "Db", "Dc",
349: "Do", "Dq", "Ec", "Ef",
350: "Em", "Eo", "Fx", "Ms",
351: "No", "Ns", "Nx", "Ox",
352: "Pc", "Pf", "Po", "Pq",
353: "Qc", "Ql", "Qo", "Qq",
354: "Re", "Rs", "Sc", "So",
355: "Sq", "Sm", "Sx", "Sy",
356: "Tn", "Ux", "Xc", "Xo",
357: "Fo", "Fc", "Oo", "Oc",
358: "Bk", "Ek", "Bt", "Hf",
359: "Fr", "Ud", "Lb", "Lp",
360: "Lk", "Mt", "Brq", "Bro",
361: "Brc", "%C", "Es", "En",
1.299 schwarze 362: "Dx", "%Q", "%U", "Ta",
1.369 schwarze 363: "Tg", NULL,
1.294 schwarze 364: "TH", "SH", "SS", "TP",
1.332 schwarze 365: "TQ",
1.294 schwarze 366: "LP", "PP", "P", "IP",
367: "HP", "SM", "SB", "BI",
368: "IB", "BR", "RB", "R",
369: "B", "I", "IR", "RI",
370: "RE", "RS", "DT", "UC",
1.297 schwarze 371: "PD", "AT", "in",
1.333 schwarze 372: "SY", "YS", "OP",
373: "EX", "EE", "UR",
1.317 schwarze 374: "UE", "MT", "ME", NULL
1.294 schwarze 375: };
376: const char *const *roff_name = __roff_name;
377:
378: static struct roffmac roffs[TOKEN_NONE] = {
1.358 schwarze 379: { roff_noarg, NULL, NULL, 0 }, /* br */
1.305 schwarze 380: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.358 schwarze 381: { roff_noarg, NULL, NULL, 0 }, /* fi */
1.297 schwarze 382: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.298 schwarze 383: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.384 schwarze 384: { roff_mc, NULL, NULL, 0 }, /* mc */
1.358 schwarze 385: { roff_noarg, NULL, NULL, 0 }, /* nf */
1.312 schwarze 386: { roff_onearg, NULL, NULL, 0 }, /* po */
1.309 schwarze 387: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.299 schwarze 388: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.300 schwarze 389: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.301 schwarze 390: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.296 schwarze 391: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.295 schwarze 392: { roff_unsupp, NULL, NULL, 0 }, /* ab */
393: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
394: { roff_line_ignore, NULL, NULL, 0 }, /* af */
395: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.311 schwarze 396: { roff_als, NULL, NULL, 0 }, /* als */
1.295 schwarze 397: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
398: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
399: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
400: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
401: { roff_ds, NULL, NULL, 0 }, /* as */
402: { roff_ds, NULL, NULL, 0 }, /* as1 */
403: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
404: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
405: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
406: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
407: { roff_unsupp, NULL, NULL, 0 }, /* blm */
408: { roff_unsupp, NULL, NULL, 0 }, /* box */
409: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
410: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
411: { roff_unsupp, NULL, NULL, 0 }, /* BP */
1.364 schwarze 412: { roff_break, NULL, NULL, 0 }, /* break */
1.295 schwarze 413: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
414: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.358 schwarze 415: { roff_noarg, NULL, NULL, 0 }, /* brp */
1.295 schwarze 416: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
417: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
418: { roff_cc, NULL, NULL, 0 }, /* cc */
419: { roff_insec, NULL, NULL, 0 }, /* cf */
420: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
421: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
1.341 schwarze 422: { roff_char, NULL, NULL, 0 }, /* char */
1.295 schwarze 423: { roff_unsupp, NULL, NULL, 0 }, /* chop */
424: { roff_line_ignore, NULL, NULL, 0 }, /* class */
425: { roff_insec, NULL, NULL, 0 }, /* close */
426: { roff_unsupp, NULL, NULL, 0 }, /* CL */
427: { roff_line_ignore, NULL, NULL, 0 }, /* color */
428: { roff_unsupp, NULL, NULL, 0 }, /* composite */
429: { roff_unsupp, NULL, NULL, 0 }, /* continue */
430: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
431: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
432: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
433: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
434: { roff_unsupp, NULL, NULL, 0 }, /* da */
435: { roff_unsupp, NULL, NULL, 0 }, /* dch */
436: { roff_Dd, NULL, NULL, 0 }, /* Dd */
437: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
438: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
439: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
440: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
441: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
442: { roff_unsupp, NULL, NULL, 0 }, /* device */
443: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
444: { roff_unsupp, NULL, NULL, 0 }, /* di */
445: { roff_unsupp, NULL, NULL, 0 }, /* do */
446: { roff_ds, NULL, NULL, 0 }, /* ds */
447: { roff_ds, NULL, NULL, 0 }, /* ds1 */
448: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
449: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.303 schwarze 450: { roff_ec, NULL, NULL, 0 }, /* ec */
1.295 schwarze 451: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
452: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
453: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
454: { roff_unsupp, NULL, NULL, 0 }, /* em */
455: { roff_EN, NULL, NULL, 0 }, /* EN */
1.303 schwarze 456: { roff_eo, NULL, NULL, 0 }, /* eo */
1.295 schwarze 457: { roff_unsupp, NULL, NULL, 0 }, /* EP */
458: { roff_EQ, NULL, NULL, 0 }, /* EQ */
459: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
460: { roff_unsupp, NULL, NULL, 0 }, /* ev */
461: { roff_unsupp, NULL, NULL, 0 }, /* evc */
462: { roff_unsupp, NULL, NULL, 0 }, /* ex */
463: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
464: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
465: { roff_unsupp, NULL, NULL, 0 }, /* fc */
466: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
467: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
468: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
469: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
470: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
471: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
472: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
473: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
474: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
475: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
476: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
477: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
478: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
479: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
480: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
481: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
482: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
483: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
484: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
485: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
486: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
487: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
488: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
489: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
490: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
491: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
492: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
493: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
494: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
495: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
496: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
497: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
498: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
499: { roff_unsupp, NULL, NULL, 0 }, /* index */
500: { roff_it, NULL, NULL, 0 }, /* it */
501: { roff_unsupp, NULL, NULL, 0 }, /* itc */
502: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
503: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
504: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
505: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
506: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
507: { roff_unsupp, NULL, NULL, 0 }, /* lc */
508: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
509: { roff_unsupp, NULL, NULL, 0 }, /* lds */
510: { roff_unsupp, NULL, NULL, 0 }, /* length */
511: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
512: { roff_insec, NULL, NULL, 0 }, /* lf */
513: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
514: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
515: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
516: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
517: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
518: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
519: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
520: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
521: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
522: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
523: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
524: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
525: { roff_insec, NULL, NULL, 0 }, /* mso */
526: { roff_line_ignore, NULL, NULL, 0 }, /* na */
527: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
528: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
529: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
530: { roff_unsupp, NULL, NULL, 0 }, /* nm */
531: { roff_unsupp, NULL, NULL, 0 }, /* nn */
1.330 schwarze 532: { roff_nop, NULL, NULL, 0 }, /* nop */
1.295 schwarze 533: { roff_nr, NULL, NULL, 0 }, /* nr */
534: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
535: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
536: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
537: { roff_insec, NULL, NULL, 0 }, /* nx */
538: { roff_insec, NULL, NULL, 0 }, /* open */
539: { roff_insec, NULL, NULL, 0 }, /* opena */
540: { roff_line_ignore, NULL, NULL, 0 }, /* os */
541: { roff_unsupp, NULL, NULL, 0 }, /* output */
542: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
543: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
544: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
545: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
546: { roff_insec, NULL, NULL, 0 }, /* pi */
547: { roff_unsupp, NULL, NULL, 0 }, /* PI */
548: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
549: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
550: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
551: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
552: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
553: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
554: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
555: { roff_insec, NULL, NULL, 0 }, /* pso */
556: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
557: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
558: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
559: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
560: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
1.339 schwarze 561: { roff_return, NULL, NULL, 0 }, /* return */
1.295 schwarze 562: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
563: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
564: { roff_rm, NULL, NULL, 0 }, /* rm */
1.306 schwarze 565: { roff_rn, NULL, NULL, 0 }, /* rn */
1.295 schwarze 566: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
567: { roff_rr, NULL, NULL, 0 }, /* rr */
568: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
569: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
570: { roff_unsupp, NULL, NULL, 0 }, /* schar */
571: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
572: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
1.339 schwarze 573: { roff_shift, NULL, NULL, 0 }, /* shift */
1.295 schwarze 574: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
575: { roff_so, NULL, NULL, 0 }, /* so */
576: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
577: { roff_line_ignore, NULL, NULL, 0 }, /* special */
578: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
579: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
580: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
581: { roff_unsupp, NULL, NULL, 0 }, /* substring */
582: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
583: { roff_insec, NULL, NULL, 0 }, /* sy */
584: { roff_T_, NULL, NULL, 0 }, /* T& */
585: { roff_unsupp, NULL, NULL, 0 }, /* tc */
586: { roff_TE, NULL, NULL, 0 }, /* TE */
1.315 schwarze 587: { roff_Dd, NULL, NULL, 0 }, /* TH */
1.295 schwarze 588: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
589: { roff_unsupp, NULL, NULL, 0 }, /* tl */
590: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
591: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
592: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
593: { roff_tr, NULL, NULL, 0 }, /* tr */
594: { roff_line_ignore, NULL, NULL, 0 }, /* track */
595: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
596: { roff_insec, NULL, NULL, 0 }, /* trf */
597: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
598: { roff_unsupp, NULL, NULL, 0 }, /* trin */
599: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
600: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
601: { roff_TS, NULL, NULL, 0 }, /* TS */
602: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
603: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
604: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
605: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
606: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
607: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
608: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
609: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
610: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
611: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
612: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
613: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
614: { roff_unsupp, NULL, NULL, 0 }, /* wh */
1.340 schwarze 615: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /*while*/
1.295 schwarze 616: { roff_insec, NULL, NULL, 0 }, /* write */
617: { roff_insec, NULL, NULL, 0 }, /* writec */
618: { roff_insec, NULL, NULL, 0 }, /* writem */
619: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
620: { roff_cblock, NULL, NULL, 0 }, /* . */
1.306 schwarze 621: { roff_renamed, NULL, NULL, 0 },
1.295 schwarze 622: { roff_userdef, NULL, NULL, 0 }
1.67 kristaps 623: };
624:
1.141 kristaps 625: /* Array of injected predefined strings. */
626: #define PREDEFS_MAX 38
627: static const struct predef predefs[PREDEFS_MAX] = {
628: #include "predefs.in"
629: };
630:
1.305 schwarze 631: static int roffce_lines; /* number of input lines to center */
632: static struct roff_node *roffce_node; /* active request */
1.178 schwarze 633: static int roffit_lines; /* number of lines to delay */
634: static char *roffit_macro; /* nil-terminated macro line */
635:
1.207 schwarze 636:
1.266 schwarze 637: /* --- request table ------------------------------------------------------ */
638:
1.295 schwarze 639: struct ohash *
640: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.85 kristaps 641: {
1.295 schwarze 642: struct ohash *htab;
643: struct roffreq *req;
644: enum roff_tok tok;
645: size_t sz;
646: unsigned int slot;
1.85 kristaps 647:
1.295 schwarze 648: htab = mandoc_malloc(sizeof(*htab));
649: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.85 kristaps 650:
1.295 schwarze 651: for (tok = mintok; tok < maxtok; tok++) {
1.296 schwarze 652: if (roff_name[tok] == NULL)
653: continue;
1.295 schwarze 654: sz = strlen(roff_name[tok]);
655: req = mandoc_malloc(sizeof(*req) + sz + 1);
656: req->tok = tok;
657: memcpy(req->name, roff_name[tok], sz + 1);
658: slot = ohash_qlookup(htab, req->name);
659: ohash_insert(htab, slot, req);
1.85 kristaps 660: }
1.295 schwarze 661: return htab;
1.85 kristaps 662: }
663:
1.295 schwarze 664: void
665: roffhash_free(struct ohash *htab)
1.67 kristaps 666: {
1.295 schwarze 667: struct roffreq *req;
668: unsigned int slot;
1.67 kristaps 669:
1.295 schwarze 670: if (htab == NULL)
671: return;
672: for (req = ohash_first(htab, &slot); req != NULL;
673: req = ohash_next(htab, &slot))
674: free(req);
675: ohash_delete(htab);
676: free(htab);
677: }
678:
679: enum roff_tok
680: roffhash_find(struct ohash *htab, const char *name, size_t sz)
681: {
682: struct roffreq *req;
683: const char *end;
684:
685: if (sz) {
686: end = name + sz;
687: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
688: } else
689: req = ohash_find(htab, ohash_qlookup(htab, name));
690: return req == NULL ? TOKEN_NONE : req->tok;
1.67 kristaps 691: }
692:
1.266 schwarze 693: /* --- stack of request blocks -------------------------------------------- */
694:
1.67 kristaps 695: /*
696: * Pop the current node off of the stack of roff instructions currently
1.364 schwarze 697: * pending. Return 1 if it is a loop or 0 otherwise.
1.67 kristaps 698: */
1.340 schwarze 699: static int
1.67 kristaps 700: roffnode_pop(struct roff *r)
701: {
702: struct roffnode *p;
1.340 schwarze 703: int inloop;
1.67 kristaps 704:
1.207 schwarze 705: p = r->last;
1.340 schwarze 706: inloop = p->tok == ROFF_while;
707: r->last = p->parent;
1.106 kristaps 708: free(p->name);
709: free(p->end);
1.67 kristaps 710: free(p);
1.340 schwarze 711: return inloop;
1.67 kristaps 712: }
713:
714: /*
715: * Push a roff node onto the instruction stack. This must later be
716: * removed with roffnode_pop().
717: */
1.98 schwarze 718: static void
1.294 schwarze 719: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.106 kristaps 720: int line, int col)
1.67 kristaps 721: {
722: struct roffnode *p;
723:
1.98 schwarze 724: p = mandoc_calloc(1, sizeof(struct roffnode));
1.67 kristaps 725: p->tok = tok;
1.106 kristaps 726: if (name)
727: p->name = mandoc_strdup(name);
1.67 kristaps 728: p->parent = r->last;
729: p->line = line;
730: p->col = col;
1.198 schwarze 731: p->rule = p->parent ? p->parent->rule : 0;
1.67 kristaps 732:
733: r->last = p;
734: }
735:
1.266 schwarze 736: /* --- roff parser state data management ---------------------------------- */
737:
1.67 kristaps 738: static void
739: roff_free1(struct roff *r)
740: {
1.167 kristaps 741: int i;
1.67 kristaps 742:
1.346 schwarze 743: tbl_free(r->first_tbl);
1.113 kristaps 744: r->first_tbl = r->last_tbl = r->tbl = NULL;
745:
1.347 schwarze 746: eqn_free(r->last_eqn);
1.319 schwarze 747: r->last_eqn = r->eqn = NULL;
1.125 kristaps 748:
1.339 schwarze 749: while (r->mstackpos >= 0)
750: roff_userret(r);
751:
1.67 kristaps 752: while (r->last)
753: roffnode_pop(r);
1.109 kristaps 754:
1.223 schwarze 755: free (r->rstack);
756: r->rstack = NULL;
757: r->rstacksz = 0;
758: r->rstackpos = -1;
759:
760: roff_freereg(r->regtab);
761: r->regtab = NULL;
762:
1.167 kristaps 763: roff_freestr(r->strtab);
1.306 schwarze 764: roff_freestr(r->rentab);
1.167 kristaps 765: roff_freestr(r->xmbtab);
1.306 schwarze 766: r->strtab = r->rentab = r->xmbtab = NULL;
1.167 kristaps 767:
768: if (r->xtab)
769: for (i = 0; i < 128; i++)
770: free(r->xtab[i].p);
771: free(r->xtab);
772: r->xtab = NULL;
1.67 kristaps 773: }
774:
775: void
776: roff_reset(struct roff *r)
777: {
778: roff_free1(r);
1.367 schwarze 779: r->options |= MPARSE_COMMENT;
1.227 schwarze 780: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.303 schwarze 781: r->control = '\0';
782: r->escape = '\\';
1.307 schwarze 783: roffce_lines = 0;
784: roffce_node = NULL;
785: roffit_lines = 0;
786: roffit_macro = NULL;
1.67 kristaps 787: }
788:
789: void
790: roff_free(struct roff *r)
791: {
1.366 schwarze 792: int i;
1.339 schwarze 793:
1.67 kristaps 794: roff_free1(r);
1.339 schwarze 795: for (i = 0; i < r->mstacksz; i++)
796: free(r->mstack[i].argv);
797: free(r->mstack);
1.295 schwarze 798: roffhash_free(r->reqtab);
1.67 kristaps 799: free(r);
800: }
801:
802: struct roff *
1.351 schwarze 803: roff_alloc(int options)
1.67 kristaps 804: {
805: struct roff *r;
806:
1.98 schwarze 807: r = mandoc_calloc(1, sizeof(struct roff));
1.328 schwarze 808: r->reqtab = roffhash_alloc(0, ROFF_RENAMED);
1.367 schwarze 809: r->options = options | MPARSE_COMMENT;
1.227 schwarze 810: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.339 schwarze 811: r->mstackpos = -1;
1.82 kristaps 812: r->rstackpos = -1;
1.303 schwarze 813: r->escape = '\\';
1.277 schwarze 814: return r;
1.265 schwarze 815: }
816:
1.266 schwarze 817: /* --- syntax tree state data management ---------------------------------- */
818:
1.265 schwarze 819: static void
820: roff_man_free1(struct roff_man *man)
821: {
1.356 schwarze 822: if (man->meta.first != NULL)
823: roff_node_delete(man, man->meta.first);
1.265 schwarze 824: free(man->meta.msec);
825: free(man->meta.vol);
826: free(man->meta.os);
827: free(man->meta.arch);
828: free(man->meta.title);
829: free(man->meta.name);
830: free(man->meta.date);
1.356 schwarze 831: free(man->meta.sodest);
1.265 schwarze 832: }
833:
1.357 schwarze 834: void
835: roff_state_reset(struct roff_man *man)
836: {
837: man->last = man->meta.first;
838: man->last_es = NULL;
839: man->flags = 0;
840: man->lastsec = man->lastnamed = SEC_NONE;
841: man->next = ROFF_NEXT_CHILD;
842: roff_setreg(man->roff, "nS", 0, '=');
843: }
844:
1.265 schwarze 845: static void
846: roff_man_alloc1(struct roff_man *man)
847: {
848: memset(&man->meta, 0, sizeof(man->meta));
1.356 schwarze 849: man->meta.first = mandoc_calloc(1, sizeof(*man->meta.first));
850: man->meta.first->type = ROFFT_ROOT;
851: man->meta.macroset = MACROSET_NONE;
1.357 schwarze 852: roff_state_reset(man);
1.265 schwarze 853: }
854:
855: void
856: roff_man_reset(struct roff_man *man)
857: {
858: roff_man_free1(man);
859: roff_man_alloc1(man);
860: }
861:
862: void
863: roff_man_free(struct roff_man *man)
864: {
865: roff_man_free1(man);
1.380 schwarze 866: free(man->os_r);
1.265 schwarze 867: free(man);
868: }
869:
870: struct roff_man *
1.351 schwarze 871: roff_man_alloc(struct roff *roff, const char *os_s, int quick)
1.265 schwarze 872: {
873: struct roff_man *man;
874:
875: man = mandoc_calloc(1, sizeof(*man));
876: man->roff = roff;
1.316 schwarze 877: man->os_s = os_s;
1.265 schwarze 878: man->quick = quick;
879: roff_man_alloc1(man);
1.296 schwarze 880: roff->man = man;
1.277 schwarze 881: return man;
1.67 kristaps 882: }
883:
1.266 schwarze 884: /* --- syntax tree handling ----------------------------------------------- */
885:
886: struct roff_node *
887: roff_node_alloc(struct roff_man *man, int line, int pos,
888: enum roff_type type, int tok)
889: {
890: struct roff_node *n;
891:
892: n = mandoc_calloc(1, sizeof(*n));
893: n->line = line;
894: n->pos = pos;
895: n->tok = tok;
896: n->type = type;
897: n->sec = man->lastsec;
898:
899: if (man->flags & MDOC_SYNOPSIS)
1.285 schwarze 900: n->flags |= NODE_SYNPRETTY;
1.266 schwarze 901: else
1.285 schwarze 902: n->flags &= ~NODE_SYNPRETTY;
1.360 schwarze 903: if ((man->flags & (ROFF_NOFILL | ROFF_NONOFILL)) == ROFF_NOFILL)
1.359 schwarze 904: n->flags |= NODE_NOFILL;
905: else
906: n->flags &= ~NODE_NOFILL;
1.266 schwarze 907: if (man->flags & MDOC_NEWLINE)
1.285 schwarze 908: n->flags |= NODE_LINE;
1.266 schwarze 909: man->flags &= ~MDOC_NEWLINE;
910:
1.277 schwarze 911: return n;
1.266 schwarze 912: }
913:
914: void
915: roff_node_append(struct roff_man *man, struct roff_node *n)
916: {
917:
918: switch (man->next) {
919: case ROFF_NEXT_SIBLING:
1.281 schwarze 920: if (man->last->next != NULL) {
921: n->next = man->last->next;
922: man->last->next->prev = n;
923: } else
924: man->last->parent->last = n;
1.266 schwarze 925: man->last->next = n;
926: n->prev = man->last;
927: n->parent = man->last->parent;
928: break;
929: case ROFF_NEXT_CHILD:
1.287 schwarze 930: if (man->last->child != NULL) {
931: n->next = man->last->child;
932: man->last->child->prev = n;
933: } else
934: man->last->last = n;
1.266 schwarze 935: man->last->child = n;
936: n->parent = man->last;
937: break;
938: default:
939: abort();
940: }
1.282 schwarze 941: man->last = n;
1.266 schwarze 942:
943: switch (n->type) {
944: case ROFFT_HEAD:
945: n->parent->head = n;
946: break;
947: case ROFFT_BODY:
1.282 schwarze 948: if (n->end != ENDBODY_NOT)
949: return;
1.266 schwarze 950: n->parent->body = n;
951: break;
952: case ROFFT_TAIL:
953: n->parent->tail = n;
954: break;
955: default:
1.282 schwarze 956: return;
1.266 schwarze 957: }
1.282 schwarze 958:
959: /*
960: * Copy over the normalised-data pointer of our parent. Not
961: * everybody has one, but copying a null pointer is fine.
962: */
963:
964: n->norm = n->parent->norm;
965: assert(n->parent->type == ROFFT_BLOCK);
1.266 schwarze 966: }
967:
1.267 schwarze 968: void
969: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
970: {
971: struct roff_node *n;
972:
973: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
974: n->string = roff_strdup(man->roff, word);
975: roff_node_append(man, n);
1.286 schwarze 976: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 977: man->next = ROFF_NEXT_SIBLING;
978: }
979:
980: void
981: roff_word_append(struct roff_man *man, const char *word)
982: {
983: struct roff_node *n;
984: char *addstr, *newstr;
985:
986: n = man->last;
987: addstr = roff_strdup(man->roff, word);
988: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
989: free(addstr);
990: free(n->string);
991: n->string = newstr;
992: man->next = ROFF_NEXT_SIBLING;
1.268 schwarze 993: }
994:
995: void
996: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
997: {
998: struct roff_node *n;
999:
1000: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
1001: roff_node_append(man, n);
1002: man->next = ROFF_NEXT_CHILD;
1003: }
1004:
1005: struct roff_node *
1006: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
1007: {
1008: struct roff_node *n;
1009:
1010: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
1011: roff_node_append(man, n);
1012: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1013: return n;
1.267 schwarze 1014: }
1015:
1.266 schwarze 1016: struct roff_node *
1017: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
1018: {
1019: struct roff_node *n;
1020:
1021: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
1022: roff_node_append(man, n);
1023: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1024: return n;
1.266 schwarze 1025: }
1026:
1027: struct roff_node *
1028: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1029: {
1030: struct roff_node *n;
1031:
1032: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1033: roff_node_append(man, n);
1034: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1035: return n;
1.267 schwarze 1036: }
1037:
1.321 schwarze 1038: static void
1.346 schwarze 1039: roff_addtbl(struct roff_man *man, int line, struct tbl_node *tbl)
1.267 schwarze 1040: {
1041: struct roff_node *n;
1.346 schwarze 1042: struct tbl_span *span;
1.267 schwarze 1043:
1.356 schwarze 1044: if (man->meta.macroset == MACROSET_MAN)
1.302 schwarze 1045: man_breakscope(man, ROFF_TS);
1.321 schwarze 1046: while ((span = tbl_span(tbl)) != NULL) {
1.346 schwarze 1047: n = roff_node_alloc(man, line, 0, ROFFT_TBL, TOKEN_NONE);
1.321 schwarze 1048: n->span = span;
1049: roff_node_append(man, n);
1050: n->flags |= NODE_VALID | NODE_ENDED;
1051: man->next = ROFF_NEXT_SIBLING;
1052: }
1.266 schwarze 1053: }
1054:
1055: void
1056: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1057: {
1058:
1059: /* Adjust siblings. */
1060:
1061: if (n->prev)
1062: n->prev->next = n->next;
1063: if (n->next)
1064: n->next->prev = n->prev;
1065:
1066: /* Adjust parent. */
1067:
1068: if (n->parent != NULL) {
1069: if (n->parent->child == n)
1070: n->parent->child = n->next;
1071: if (n->parent->last == n)
1072: n->parent->last = n->prev;
1073: }
1074:
1075: /* Adjust parse point. */
1076:
1077: if (man == NULL)
1078: return;
1079: if (man->last == n) {
1080: if (n->prev == NULL) {
1081: man->last = n->parent;
1082: man->next = ROFF_NEXT_CHILD;
1083: } else {
1084: man->last = n->prev;
1085: man->next = ROFF_NEXT_SIBLING;
1086: }
1087: }
1.356 schwarze 1088: if (man->meta.first == n)
1089: man->meta.first = NULL;
1.344 schwarze 1090: }
1091:
1092: void
1093: roff_node_relink(struct roff_man *man, struct roff_node *n)
1094: {
1095: roff_node_unlink(man, n);
1096: n->prev = n->next = NULL;
1097: roff_node_append(man, n);
1.266 schwarze 1098: }
1099:
1100: void
1101: roff_node_free(struct roff_node *n)
1102: {
1103:
1104: if (n->args != NULL)
1105: mdoc_argv_free(n->args);
1106: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1107: free(n->norm);
1.347 schwarze 1108: eqn_box_free(n->eqn);
1.266 schwarze 1109: free(n->string);
1.374 schwarze 1110: free(n->tag);
1.266 schwarze 1111: free(n);
1112: }
1113:
1114: void
1115: roff_node_delete(struct roff_man *man, struct roff_node *n)
1116: {
1117:
1118: while (n->child != NULL)
1119: roff_node_delete(man, n->child);
1120: roff_node_unlink(man, n);
1121: roff_node_free(n);
1.370 schwarze 1122: }
1123:
1124: int
1125: roff_node_transparent(struct roff_node *n)
1126: {
1127: if (n == NULL)
1128: return 0;
1129: if (n->type == ROFFT_COMMENT || n->flags & NODE_NOPRT)
1130: return 1;
1.373 schwarze 1131: return roff_tok_transparent(n->tok);
1132: }
1133:
1134: int
1135: roff_tok_transparent(enum roff_tok tok)
1136: {
1137: switch (tok) {
1.370 schwarze 1138: case ROFF_ft:
1139: case ROFF_ll:
1140: case ROFF_mc:
1141: case ROFF_po:
1142: case ROFF_ta:
1143: case MDOC_Db:
1144: case MDOC_Es:
1145: case MDOC_Sm:
1146: case MDOC_Tg:
1147: case MAN_DT:
1148: case MAN_UC:
1149: case MAN_PD:
1150: case MAN_AT:
1151: return 1;
1152: default:
1153: return 0;
1154: }
1155: }
1156:
1157: struct roff_node *
1158: roff_node_child(struct roff_node *n)
1159: {
1160: for (n = n->child; roff_node_transparent(n); n = n->next)
1161: continue;
1162: return n;
1163: }
1164:
1165: struct roff_node *
1166: roff_node_prev(struct roff_node *n)
1167: {
1168: do {
1169: n = n->prev;
1170: } while (roff_node_transparent(n));
1171: return n;
1172: }
1173:
1174: struct roff_node *
1175: roff_node_next(struct roff_node *n)
1176: {
1177: do {
1178: n = n->next;
1179: } while (roff_node_transparent(n));
1180: return n;
1.269 schwarze 1181: }
1182:
1183: void
1184: deroff(char **dest, const struct roff_node *n)
1185: {
1186: char *cp;
1187: size_t sz;
1188:
1.371 schwarze 1189: if (n->string == NULL) {
1.269 schwarze 1190: for (n = n->child; n != NULL; n = n->next)
1191: deroff(dest, n);
1192: return;
1193: }
1194:
1.288 schwarze 1195: /* Skip leading whitespace. */
1.269 schwarze 1196:
1.288 schwarze 1197: for (cp = n->string; *cp != '\0'; cp++) {
1.289 schwarze 1198: if (cp[0] == '\\' && cp[1] != '\0' &&
1199: strchr(" %&0^|~", cp[1]) != NULL)
1.269 schwarze 1200: cp++;
1.288 schwarze 1201: else if ( ! isspace((unsigned char)*cp))
1.269 schwarze 1202: break;
1203: }
1204:
1.289 schwarze 1205: /* Skip trailing backslash. */
1206:
1207: sz = strlen(cp);
1.290 schwarze 1208: if (sz > 0 && cp[sz - 1] == '\\')
1.289 schwarze 1209: sz--;
1210:
1.269 schwarze 1211: /* Skip trailing whitespace. */
1212:
1.289 schwarze 1213: for (; sz; sz--)
1.269 schwarze 1214: if ( ! isspace((unsigned char)cp[sz-1]))
1215: break;
1216:
1217: /* Skip empty strings. */
1218:
1219: if (sz == 0)
1220: return;
1221:
1222: if (*dest == NULL) {
1223: *dest = mandoc_strndup(cp, sz);
1224: return;
1225: }
1226:
1227: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1228: free(*dest);
1229: *dest = cp;
1.266 schwarze 1230: }
1231:
1232: /* --- main functions of the roff parser ---------------------------------- */
1233:
1.94 kristaps 1234: /*
1.355 schwarze 1235: * In the current line, expand escape sequences that produce parsable
1236: * input text. Also check the syntax of the remaining escape sequences,
1237: * which typically produce output glyphs or change formatter state.
1.154 kristaps 1238: */
1.340 schwarze 1239: static int
1.355 schwarze 1240: roff_expand(struct roff *r, struct buf *buf, int ln, int pos, char newesc)
1.94 kristaps 1241: {
1.339 schwarze 1242: struct mctx *ctx; /* current macro call context */
1.208 schwarze 1243: char ubuf[24]; /* buffer to print the number */
1.328 schwarze 1244: struct roff_node *n; /* used for header comments */
1.205 schwarze 1245: const char *start; /* start of the string to process */
1.209 schwarze 1246: char *stesc; /* start of an escape sequence ('\\') */
1.352 schwarze 1247: const char *esct; /* type of esccape sequence */
1.328 schwarze 1248: char *ep; /* end of comment string */
1.108 schwarze 1249: const char *stnam; /* start of the name, after "[(*" */
1250: const char *cp; /* end of the name, e.g. before ']' */
1251: const char *res; /* the string to be substituted */
1.238 schwarze 1252: char *nbuf; /* new buffer to copy buf->buf to */
1.181 schwarze 1253: size_t maxl; /* expected length of the escape name */
1254: size_t naml; /* actual length of the escape name */
1.339 schwarze 1255: size_t asz; /* length of the replacement */
1256: size_t rsz; /* length of the rest of the string */
1.237 schwarze 1257: int inaml; /* length returned from mandoc_escape() */
1.181 schwarze 1258: int expand_count; /* to avoid infinite loops */
1.206 schwarze 1259: int npos; /* position in numeric expression */
1.218 schwarze 1260: int arg_complete; /* argument not interrupted by eol */
1.339 schwarze 1261: int quote_args; /* true for \\$@, false for \\$* */
1.303 schwarze 1262: int done; /* no more input available */
1.315 schwarze 1263: int deftype; /* type of definition to paste */
1.323 schwarze 1264: int rcsid; /* kind of RCS id seen */
1.352 schwarze 1265: enum mandocerr err; /* for escape sequence problems */
1.327 schwarze 1266: char sign; /* increment number register */
1.206 schwarze 1267: char term; /* character terminating the escape */
1.94 kristaps 1268:
1.303 schwarze 1269: /* Search forward for comments. */
1270:
1271: done = 0;
1272: start = buf->buf + pos;
1273: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1.355 schwarze 1274: if (stesc[0] != newesc || stesc[1] == '\0')
1.303 schwarze 1275: continue;
1276: stesc++;
1277: if (*stesc != '"' && *stesc != '#')
1278: continue;
1.313 schwarze 1279:
1280: /* Comment found, look for RCS id. */
1281:
1.323 schwarze 1282: rcsid = 0;
1.313 schwarze 1283: if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
1.323 schwarze 1284: rcsid = 1 << MANDOC_OS_OPENBSD;
1.313 schwarze 1285: cp += 8;
1286: } else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
1.323 schwarze 1287: rcsid = 1 << MANDOC_OS_NETBSD;
1.313 schwarze 1288: cp += 7;
1289: }
1290: if (cp != NULL &&
1291: isalnum((unsigned char)*cp) == 0 &&
1.314 schwarze 1292: strchr(cp, '$') != NULL) {
1.323 schwarze 1293: if (r->man->meta.rcsids & rcsid)
1.350 schwarze 1294: mandoc_msg(MANDOCERR_RCS_REP, ln,
1295: (int)(stesc - buf->buf) + 1,
1296: "%s", stesc + 1);
1.323 schwarze 1297: r->man->meta.rcsids |= rcsid;
1.314 schwarze 1298: }
1.313 schwarze 1299:
1300: /* Handle trailing whitespace. */
1301:
1.328 schwarze 1302: ep = strchr(stesc--, '\0') - 1;
1303: if (*ep == '\n') {
1.303 schwarze 1304: done = 1;
1.328 schwarze 1305: ep--;
1.303 schwarze 1306: }
1.328 schwarze 1307: if (*ep == ' ' || *ep == '\t')
1.350 schwarze 1308: mandoc_msg(MANDOCERR_SPACE_EOL,
1309: ln, (int)(ep - buf->buf), NULL);
1.328 schwarze 1310:
1311: /*
1312: * Save comments preceding the title macro
1313: * in the syntax tree.
1314: */
1315:
1.367 schwarze 1316: if (newesc != ASCII_ESC && r->options & MPARSE_COMMENT) {
1.328 schwarze 1317: while (*ep == ' ' || *ep == '\t')
1318: ep--;
1319: ep[1] = '\0';
1320: n = roff_node_alloc(r->man,
1321: ln, stesc + 1 - buf->buf,
1322: ROFFT_COMMENT, TOKEN_NONE);
1323: n->string = mandoc_strdup(stesc + 2);
1324: roff_node_append(r->man, n);
1325: n->flags |= NODE_VALID | NODE_ENDED;
1326: r->man->next = ROFF_NEXT_SIBLING;
1327: }
1328:
1.334 schwarze 1329: /* Line continuation with comment. */
1330:
1331: if (stesc[1] == '#') {
1332: *stesc = '\0';
1.340 schwarze 1333: return ROFF_IGN | ROFF_APPEND;
1.334 schwarze 1334: }
1335:
1336: /* Discard normal comments. */
1.328 schwarze 1337:
1.335 schwarze 1338: while (stesc > start && stesc[-1] == ' ' &&
1339: (stesc == start + 1 || stesc[-2] != '\\'))
1.303 schwarze 1340: stesc--;
1341: *stesc = '\0';
1342: break;
1343: }
1344: if (stesc == start)
1345: return ROFF_CONT;
1346: stesc--;
1347:
1348: /* Notice the end of the input. */
1349:
1350: if (*stesc == '\n') {
1351: *stesc-- = '\0';
1352: done = 1;
1353: }
1354:
1.170 schwarze 1355: expand_count = 0;
1.303 schwarze 1356: while (stesc >= start) {
1.355 schwarze 1357: if (*stesc != newesc) {
1.170 schwarze 1358:
1.355 schwarze 1359: /*
1360: * If we have a non-standard escape character,
1361: * escape literal backslashes because all
1362: * processing in subsequent functions uses
1363: * the standard escaping rules.
1364: */
1.205 schwarze 1365:
1.355 schwarze 1366: if (newesc != ASCII_ESC && *stesc == '\\') {
1.303 schwarze 1367: *stesc = '\0';
1368: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1369: buf->buf, stesc + 1) + 1;
1370: start = nbuf + pos;
1371: stesc = nbuf + (stesc - buf->buf);
1372: free(buf->buf);
1373: buf->buf = nbuf;
1374: }
1.355 schwarze 1375:
1376: /* Search backwards for the next escape. */
1377:
1.303 schwarze 1378: stesc--;
1.205 schwarze 1379: continue;
1.303 schwarze 1380: }
1.205 schwarze 1381:
1382: /* If it is escaped, skip it. */
1383:
1384: for (cp = stesc - 1; cp >= start; cp--)
1.303 schwarze 1385: if (*cp != r->escape)
1.205 schwarze 1386: break;
1387:
1.238 schwarze 1388: if ((stesc - cp) % 2 == 0) {
1.303 schwarze 1389: while (stesc > cp)
1390: *stesc-- = '\\';
1.205 schwarze 1391: continue;
1.303 schwarze 1392: } else if (stesc[1] != '\0') {
1393: *stesc = '\\';
1394: } else {
1395: *stesc-- = '\0';
1396: if (done)
1397: continue;
1398: else
1.340 schwarze 1399: return ROFF_IGN | ROFF_APPEND;
1.205 schwarze 1400: }
1.108 schwarze 1401:
1.206 schwarze 1402: /* Decide whether to expand or to check only. */
1.108 schwarze 1403:
1.206 schwarze 1404: term = '\0';
1.205 schwarze 1405: cp = stesc + 1;
1.381 schwarze 1406: while (*cp == 'E')
1.352 schwarze 1407: cp++;
1408: esct = cp;
1409: switch (*esct) {
1.207 schwarze 1410: case '*':
1.339 schwarze 1411: case '$':
1.181 schwarze 1412: res = NULL;
1413: break;
1.207 schwarze 1414: case 'B':
1415: case 'w':
1.206 schwarze 1416: term = cp[1];
1417: /* FALLTHROUGH */
1.207 schwarze 1418: case 'n':
1.327 schwarze 1419: sign = cp[1];
1420: if (sign == '+' || sign == '-')
1421: cp++;
1.181 schwarze 1422: res = ubuf;
1423: break;
1424: default:
1.352 schwarze 1425: err = MANDOCERR_OK;
1426: switch(mandoc_escape(&cp, &stnam, &inaml)) {
1427: case ESCAPE_SPECIAL:
1428: if (mchars_spec2cp(stnam, inaml) >= 0)
1429: break;
1430: /* FALLTHROUGH */
1431: case ESCAPE_ERROR:
1432: err = MANDOCERR_ESC_BAD;
1433: break;
1434: case ESCAPE_UNDEF:
1435: err = MANDOCERR_ESC_UNDEF;
1436: break;
1437: case ESCAPE_UNSUPP:
1438: err = MANDOCERR_ESC_UNSUPP;
1439: break;
1440: default:
1441: break;
1442: }
1443: if (err != MANDOCERR_OK)
1444: mandoc_msg(err, ln, (int)(stesc - buf->buf),
1.219 schwarze 1445: "%.*s", (int)(cp - stesc), stesc);
1.303 schwarze 1446: stesc--;
1.205 schwarze 1447: continue;
1.152 kristaps 1448: }
1449:
1.205 schwarze 1450: if (EXPAND_LIMIT < ++expand_count) {
1.350 schwarze 1451: mandoc_msg(MANDOCERR_ROFFLOOP,
1.238 schwarze 1452: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1453: return ROFF_IGN;
1.205 schwarze 1454: }
1.108 schwarze 1455:
1456: /*
1457: * The third character decides the length
1.181 schwarze 1458: * of the name of the string or register.
1.108 schwarze 1459: * Save a pointer to the name.
1460: */
1461:
1.238 schwarze 1462: if (term == '\0') {
1.206 schwarze 1463: switch (*++cp) {
1.207 schwarze 1464: case '\0':
1.206 schwarze 1465: maxl = 0;
1466: break;
1.207 schwarze 1467: case '(':
1.206 schwarze 1468: cp++;
1469: maxl = 2;
1470: break;
1.207 schwarze 1471: case '[':
1.206 schwarze 1472: cp++;
1473: term = ']';
1474: maxl = 0;
1475: break;
1476: default:
1477: maxl = 1;
1478: break;
1479: }
1480: } else {
1481: cp += 2;
1.94 kristaps 1482: maxl = 0;
1483: }
1.108 schwarze 1484: stnam = cp;
1.94 kristaps 1485:
1.108 schwarze 1486: /* Advance to the end of the name. */
1.94 kristaps 1487:
1.253 schwarze 1488: naml = 0;
1.218 schwarze 1489: arg_complete = 1;
1.253 schwarze 1490: while (maxl == 0 || naml < maxl) {
1.238 schwarze 1491: if (*cp == '\0') {
1.350 schwarze 1492: mandoc_msg(MANDOCERR_ESC_BAD, ln,
1493: (int)(stesc - buf->buf), "%s", stesc);
1.218 schwarze 1494: arg_complete = 0;
1.206 schwarze 1495: break;
1.153 kristaps 1496: }
1.238 schwarze 1497: if (maxl == 0 && *cp == term) {
1.206 schwarze 1498: cp++;
1.253 schwarze 1499: break;
1500: }
1.352 schwarze 1501: if (*cp++ != '\\' || *esct != 'w') {
1.253 schwarze 1502: naml++;
1503: continue;
1504: }
1505: switch (mandoc_escape(&cp, NULL, NULL)) {
1506: case ESCAPE_SPECIAL:
1507: case ESCAPE_UNICODE:
1508: case ESCAPE_NUMBERED:
1.352 schwarze 1509: case ESCAPE_UNDEF:
1.253 schwarze 1510: case ESCAPE_OVERSTRIKE:
1511: naml++;
1512: break;
1513: default:
1.94 kristaps 1514: break;
1.206 schwarze 1515: }
1.94 kristaps 1516: }
1517:
1.108 schwarze 1518: /*
1519: * Retrieve the replacement string; if it is
1520: * undefined, resume searching for escapes.
1521: */
1522:
1.352 schwarze 1523: switch (*esct) {
1.207 schwarze 1524: case '*':
1.315 schwarze 1525: if (arg_complete) {
1526: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1527: res = roff_getstrn(r, stnam, naml, &deftype);
1.331 schwarze 1528:
1529: /*
1530: * If not overriden, let \*(.T
1531: * through to the formatters.
1532: */
1533:
1534: if (res == NULL && naml == 2 &&
1535: stnam[0] == '.' && stnam[1] == 'T') {
1536: roff_setstrn(&r->strtab,
1537: ".T", 2, NULL, 0, 0);
1538: stesc--;
1539: continue;
1540: }
1.315 schwarze 1541: }
1.206 schwarze 1542: break;
1.339 schwarze 1543: case '$':
1544: if (r->mstackpos < 0) {
1.350 schwarze 1545: mandoc_msg(MANDOCERR_ARG_UNDEF, ln,
1546: (int)(stesc - buf->buf), "%.3s", stesc);
1.339 schwarze 1547: break;
1548: }
1549: ctx = r->mstack + r->mstackpos;
1.352 schwarze 1550: npos = esct[1] - '1';
1.339 schwarze 1551: if (npos >= 0 && npos <= 8) {
1552: res = npos < ctx->argc ?
1553: ctx->argv[npos] : "";
1554: break;
1555: }
1.352 schwarze 1556: if (esct[1] == '*')
1.339 schwarze 1557: quote_args = 0;
1.352 schwarze 1558: else if (esct[1] == '@')
1.339 schwarze 1559: quote_args = 1;
1560: else {
1.350 schwarze 1561: mandoc_msg(MANDOCERR_ARG_NONUM, ln,
1562: (int)(stesc - buf->buf), "%.3s", stesc);
1.339 schwarze 1563: break;
1564: }
1565: asz = 0;
1566: for (npos = 0; npos < ctx->argc; npos++) {
1567: if (npos)
1568: asz++; /* blank */
1569: if (quote_args)
1570: asz += 2; /* quotes */
1571: asz += strlen(ctx->argv[npos]);
1572: }
1573: if (asz != 3) {
1574: rsz = buf->sz - (stesc - buf->buf) - 3;
1575: if (asz < 3)
1576: memmove(stesc + asz, stesc + 3, rsz);
1577: buf->sz += asz - 3;
1578: nbuf = mandoc_realloc(buf->buf, buf->sz);
1579: start = nbuf + pos;
1580: stesc = nbuf + (stesc - buf->buf);
1581: buf->buf = nbuf;
1582: if (asz > 3)
1583: memmove(stesc + asz, stesc + 3, rsz);
1584: }
1585: for (npos = 0; npos < ctx->argc; npos++) {
1586: if (npos)
1587: *stesc++ = ' ';
1588: if (quote_args)
1589: *stesc++ = '"';
1590: cp = ctx->argv[npos];
1591: while (*cp != '\0')
1592: *stesc++ = *cp++;
1593: if (quote_args)
1594: *stesc++ = '"';
1595: }
1596: continue;
1.207 schwarze 1597: case 'B':
1.206 schwarze 1598: npos = 0;
1.218 schwarze 1599: ubuf[0] = arg_complete &&
1.261 schwarze 1600: roff_evalnum(r, ln, stnam, &npos,
1601: NULL, ROFFNUM_SCALE) &&
1.218 schwarze 1602: stnam + npos + 1 == cp ? '1' : '0';
1.206 schwarze 1603: ubuf[1] = '\0';
1604: break;
1.207 schwarze 1605: case 'n':
1.218 schwarze 1606: if (arg_complete)
1607: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.327 schwarze 1608: roff_getregn(r, stnam, naml, sign));
1.218 schwarze 1609: else
1610: ubuf[0] = '\0';
1.206 schwarze 1611: break;
1.207 schwarze 1612: case 'w':
1.218 schwarze 1613: /* use even incomplete args */
1.208 schwarze 1614: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.206 schwarze 1615: 24 * (int)naml);
1616: break;
1617: }
1.94 kristaps 1618:
1.238 schwarze 1619: if (res == NULL) {
1.352 schwarze 1620: if (*esct == '*')
1.350 schwarze 1621: mandoc_msg(MANDOCERR_STR_UNDEF,
1622: ln, (int)(stesc - buf->buf),
1.339 schwarze 1623: "%.*s", (int)naml, stnam);
1.142 kristaps 1624: res = "";
1.246 schwarze 1625: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1.350 schwarze 1626: mandoc_msg(MANDOCERR_ROFFLOOP,
1.246 schwarze 1627: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1628: return ROFF_IGN;
1.94 kristaps 1629: }
1630:
1.108 schwarze 1631: /* Replace the escape sequence by the string. */
1632:
1.209 schwarze 1633: *stesc = '\0';
1.238 schwarze 1634: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1635: buf->buf, res, cp) + 1;
1.94 kristaps 1636:
1.205 schwarze 1637: /* Prepare for the next replacement. */
1.94 kristaps 1638:
1.205 schwarze 1639: start = nbuf + pos;
1.238 schwarze 1640: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1641: free(buf->buf);
1642: buf->buf = nbuf;
1.154 kristaps 1643: }
1.277 schwarze 1644: return ROFF_CONT;
1.154 kristaps 1645: }
1.353 schwarze 1646:
1647: /*
1648: * Parse a quoted or unquoted roff-style request or macro argument.
1649: * Return a pointer to the parsed argument, which is either the original
1650: * pointer or advanced by one byte in case the argument is quoted.
1651: * NUL-terminate the argument in place.
1652: * Collapse pairs of quotes inside quoted arguments.
1653: * Advance the argument pointer to the next argument,
1654: * or to the NUL byte terminating the argument line.
1655: */
1656: char *
1.355 schwarze 1657: roff_getarg(struct roff *r, char **cpp, int ln, int *pos)
1.353 schwarze 1658: {
1.355 schwarze 1659: struct buf buf;
1.366 schwarze 1660: char *cp, *start;
1.355 schwarze 1661: int newesc, pairs, quoted, white;
1.353 schwarze 1662:
1663: /* Quoting can only start with a new word. */
1664: start = *cpp;
1665: quoted = 0;
1666: if ('"' == *start) {
1667: quoted = 1;
1668: start++;
1669: }
1670:
1.355 schwarze 1671: newesc = pairs = white = 0;
1.353 schwarze 1672: for (cp = start; '\0' != *cp; cp++) {
1673:
1674: /*
1675: * Move the following text left
1676: * after quoted quotes and after "\\" and "\t".
1677: */
1678: if (pairs)
1679: cp[-pairs] = cp[0];
1680:
1681: if ('\\' == cp[0]) {
1682: /*
1683: * In copy mode, translate double to single
1684: * backslashes and backslash-t to literal tabs.
1685: */
1686: switch (cp[1]) {
1687: case 'a':
1688: case 't':
1.354 schwarze 1689: cp[-pairs] = '\t';
1.355 schwarze 1690: pairs++;
1691: cp++;
1692: break;
1.353 schwarze 1693: case '\\':
1.355 schwarze 1694: newesc = 1;
1695: cp[-pairs] = ASCII_ESC;
1.353 schwarze 1696: pairs++;
1697: cp++;
1698: break;
1699: case ' ':
1700: /* Skip escaped blanks. */
1701: if (0 == quoted)
1702: cp++;
1703: break;
1704: default:
1705: break;
1706: }
1707: } else if (0 == quoted) {
1708: if (' ' == cp[0]) {
1709: /* Unescaped blanks end unquoted args. */
1710: white = 1;
1711: break;
1712: }
1713: } else if ('"' == cp[0]) {
1714: if ('"' == cp[1]) {
1715: /* Quoted quotes collapse. */
1716: pairs++;
1717: cp++;
1718: } else {
1719: /* Unquoted quotes end quoted args. */
1720: quoted = 2;
1721: break;
1722: }
1723: }
1724: }
1725:
1726: /* Quoted argument without a closing quote. */
1727: if (1 == quoted)
1728: mandoc_msg(MANDOCERR_ARG_QUOTE, ln, *pos, NULL);
1729:
1730: /* NUL-terminate this argument and move to the next one. */
1731: if (pairs)
1732: cp[-pairs] = '\0';
1733: if ('\0' != *cp) {
1734: *cp++ = '\0';
1735: while (' ' == *cp)
1736: cp++;
1737: }
1738: *pos += (int)(cp - start) + (quoted ? 1 : 0);
1739: *cpp = cp;
1740:
1741: if ('\0' == *cp && (white || ' ' == cp[-1]))
1742: mandoc_msg(MANDOCERR_SPACE_EOL, ln, *pos, NULL);
1743:
1.355 schwarze 1744: start = mandoc_strdup(start);
1745: if (newesc == 0)
1746: return start;
1747:
1748: buf.buf = start;
1749: buf.sz = strlen(start) + 1;
1750: buf.next = NULL;
1751: if (roff_expand(r, &buf, ln, 0, ASCII_ESC) & ROFF_IGN) {
1752: free(buf.buf);
1753: buf.buf = mandoc_strdup("");
1754: }
1755: return buf.buf;
1.353 schwarze 1756: }
1757:
1.154 kristaps 1758:
1759: /*
1.275 schwarze 1760: * Process text streams.
1.154 kristaps 1761: */
1.340 schwarze 1762: static int
1.305 schwarze 1763: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.154 kristaps 1764: {
1765: size_t sz;
1766: const char *start;
1.178 schwarze 1767: char *p;
1768: int isz;
1.154 kristaps 1769: enum mandoc_esc esc;
1770:
1.275 schwarze 1771: /* Spring the input line trap. */
1772:
1773: if (roffit_lines == 1) {
1774: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1775: free(buf->buf);
1776: buf->buf = p;
1777: buf->sz = isz + 1;
1778: *offs = 0;
1779: free(roffit_macro);
1780: roffit_lines = 0;
1.277 schwarze 1781: return ROFF_REPARSE;
1.275 schwarze 1782: } else if (roffit_lines > 1)
1783: --roffit_lines;
1784:
1.305 schwarze 1785: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1786: if (roffce_lines < 1) {
1787: r->man->last = roffce_node;
1788: r->man->next = ROFF_NEXT_SIBLING;
1789: roffce_lines = 0;
1790: roffce_node = NULL;
1791: } else
1792: roffce_lines--;
1793: }
1794:
1.275 schwarze 1795: /* Convert all breakable hyphens into ASCII_HYPH. */
1796:
1.238 schwarze 1797: start = p = buf->buf + pos;
1.154 kristaps 1798:
1.238 schwarze 1799: while (*p != '\0') {
1.154 kristaps 1800: sz = strcspn(p, "-\\");
1801: p += sz;
1802:
1.238 schwarze 1803: if (*p == '\0')
1.159 kristaps 1804: break;
1805:
1.238 schwarze 1806: if (*p == '\\') {
1.154 kristaps 1807: /* Skip over escapes. */
1808: p++;
1.189 schwarze 1809: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.238 schwarze 1810: if (esc == ESCAPE_ERROR)
1.154 kristaps 1811: break;
1.264 schwarze 1812: while (*p == '-')
1813: p++;
1.155 kristaps 1814: continue;
1.159 kristaps 1815: } else if (p == start) {
1.158 kristaps 1816: p++;
1.155 kristaps 1817: continue;
1.158 kristaps 1818: }
1.155 kristaps 1819:
1.171 schwarze 1820: if (isalpha((unsigned char)p[-1]) &&
1821: isalpha((unsigned char)p[1]))
1.155 kristaps 1822: *p = ASCII_HYPH;
1823: p++;
1.94 kristaps 1824: }
1.277 schwarze 1825: return ROFF_CONT;
1.94 kristaps 1826: }
1827:
1.340 schwarze 1828: int
1.377 schwarze 1829: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs, size_t len)
1.67 kristaps 1830: {
1.294 schwarze 1831: enum roff_tok t;
1.340 schwarze 1832: int e;
1.238 schwarze 1833: int pos; /* parse point */
1.243 schwarze 1834: int spos; /* saved parse point for messages */
1.238 schwarze 1835: int ppos; /* original offset in buf->buf */
1836: int ctl; /* macro line (boolean) */
1837:
1838: ppos = pos = *offs;
1.377 schwarze 1839:
1840: if (len > 80 && r->tbl == NULL && r->eqn == NULL &&
1841: (r->man->flags & ROFF_NOFILL) == 0 &&
1842: strchr(" .\\", buf->buf[pos]) == NULL &&
1843: buf->buf[pos] != r->control &&
1844: strcspn(buf->buf, " ") < 80)
1845: mandoc_msg(MANDOCERR_TEXT_LONG, ln, (int)len - 1,
1846: "%.20s...", buf->buf + pos);
1.79 kristaps 1847:
1.230 schwarze 1848: /* Handle in-line equation delimiters. */
1849:
1.236 schwarze 1850: if (r->tbl == NULL &&
1851: r->last_eqn != NULL && r->last_eqn->delim &&
1.230 schwarze 1852: (r->eqn == NULL || r->eqn_inline)) {
1.238 schwarze 1853: e = roff_eqndelim(r, buf, pos);
1.230 schwarze 1854: if (e == ROFF_REPARSE)
1.277 schwarze 1855: return e;
1.230 schwarze 1856: assert(e == ROFF_CONT);
1857: }
1858:
1859: /* Expand some escape sequences. */
1.94 kristaps 1860:
1.355 schwarze 1861: e = roff_expand(r, buf, ln, pos, r->escape);
1.340 schwarze 1862: if ((e & ROFF_MASK) == ROFF_IGN)
1.277 schwarze 1863: return e;
1.238 schwarze 1864: assert(e == ROFF_CONT);
1.94 kristaps 1865:
1.238 schwarze 1866: ctl = roff_getcontrol(r, buf->buf, &pos);
1.130 kristaps 1867:
1.94 kristaps 1868: /*
1.79 kristaps 1869: * First, if a scope is open and we're not a macro, pass the
1.252 schwarze 1870: * text through the macro's filter.
1871: * Equations process all content themselves.
1872: * Tables process almost all content themselves, but we want
1873: * to warn about macros before passing it there.
1.79 kristaps 1874: */
1.74 kristaps 1875:
1.252 schwarze 1876: if (r->last != NULL && ! ctl) {
1.78 kristaps 1877: t = r->last->tok;
1.238 schwarze 1878: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.340 schwarze 1879: if ((e & ROFF_MASK) == ROFF_IGN)
1.277 schwarze 1880: return e;
1.340 schwarze 1881: e &= ~ROFF_MASK;
1882: } else
1883: e = ROFF_IGN;
1.319 schwarze 1884: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1885: eqn_read(r->eqn, buf->buf + ppos);
1.340 schwarze 1886: return e;
1.319 schwarze 1887: }
1.321 schwarze 1888: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1889: tbl_read(r->tbl, ln, buf->buf, ppos);
1.346 schwarze 1890: roff_addtbl(r->man, ln, r->tbl);
1.340 schwarze 1891: return e;
1.321 schwarze 1892: }
1.367 schwarze 1893: if ( ! ctl) {
1894: r->options &= ~MPARSE_COMMENT;
1.340 schwarze 1895: return roff_parsetext(r, buf, pos, offs) | e;
1.367 schwarze 1896: }
1.228 schwarze 1897:
1898: /* Skip empty request lines. */
1899:
1.238 schwarze 1900: if (buf->buf[pos] == '"') {
1.350 schwarze 1901: mandoc_msg(MANDOCERR_COMMENT_BAD, ln, pos, NULL);
1.277 schwarze 1902: return ROFF_IGN;
1.238 schwarze 1903: } else if (buf->buf[pos] == '\0')
1.277 schwarze 1904: return ROFF_IGN;
1.67 kristaps 1905:
1.79 kristaps 1906: /*
1907: * If a scope is open, go to the child handler for that macro,
1908: * as it may want to preprocess before doing anything with it.
1909: */
1.78 kristaps 1910:
1.79 kristaps 1911: if (r->last) {
1912: t = r->last->tok;
1.277 schwarze 1913: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1914: }
1.78 kristaps 1915:
1.367 schwarze 1916: r->options &= ~MPARSE_COMMENT;
1.243 schwarze 1917: spos = pos;
1918: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.386 ! schwarze 1919: return roff_req_or_macro(r, t, buf, ln, spos, pos, offs);
! 1920: }
! 1921:
! 1922: /*
! 1923: * Handle a new request or macro.
! 1924: * May be called outside any scope or from inside a conditional scope.
! 1925: */
! 1926: static int
! 1927: roff_req_or_macro(ROFF_ARGS) {
1.243 schwarze 1928:
1.386 ! schwarze 1929: /* For now, tables ignore most macros and some request. */
1.243 schwarze 1930:
1.386 ! schwarze 1931: if (r->tbl != NULL && (tok == TOKEN_NONE || tok == ROFF_TS ||
! 1932: tok == ROFF_br || tok == ROFF_ce || tok == ROFF_rj ||
! 1933: tok == ROFF_sp)) {
1.350 schwarze 1934: mandoc_msg(MANDOCERR_TBLMACRO,
1.386 ! schwarze 1935: ln, ppos, "%s", buf->buf + ppos);
! 1936: if (tok != TOKEN_NONE)
1.277 schwarze 1937: return ROFF_IGN;
1.257 schwarze 1938: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1939: pos++;
1.291 schwarze 1940: while (buf->buf[pos] == ' ')
1.257 schwarze 1941: pos++;
1.321 schwarze 1942: tbl_read(r->tbl, ln, buf->buf, pos);
1.346 schwarze 1943: roff_addtbl(r->man, ln, r->tbl);
1.321 schwarze 1944: return ROFF_IGN;
1.243 schwarze 1945: }
1946:
1.305 schwarze 1947: /* For now, let high level macros abort .ce mode. */
1948:
1.386 ! schwarze 1949: if (roffce_node != NULL &&
! 1950: (tok == TOKEN_NONE || tok == ROFF_Dd || tok == ROFF_EQ ||
! 1951: tok == ROFF_TH || tok == ROFF_TS)) {
1.305 schwarze 1952: r->man->last = roffce_node;
1953: r->man->next = ROFF_NEXT_SIBLING;
1954: roffce_lines = 0;
1955: roffce_node = NULL;
1956: }
1957:
1.79 kristaps 1958: /*
1.243 schwarze 1959: * This is neither a roff request nor a user-defined macro.
1960: * Let the standard macro set parsers handle it.
1.79 kristaps 1961: */
1.67 kristaps 1962:
1.386 ! schwarze 1963: if (tok == TOKEN_NONE)
1.277 schwarze 1964: return ROFF_CONT;
1.243 schwarze 1965:
1.386 ! schwarze 1966: /* Execute a roff request or a user-defined macro. */
1.67 kristaps 1967:
1.386 ! schwarze 1968: return (*roffs[tok].proc)(r, tok, buf, ln, ppos, pos, offs);
1.74 kristaps 1969: }
1970:
1.339 schwarze 1971: /*
1972: * Internal interface function to tell the roff parser that execution
1973: * of the current macro ended. This is required because macro
1974: * definitions usually do not end with a .return request.
1975: */
1976: void
1977: roff_userret(struct roff *r)
1978: {
1979: struct mctx *ctx;
1980: int i;
1981:
1982: assert(r->mstackpos >= 0);
1983: ctx = r->mstack + r->mstackpos;
1984: for (i = 0; i < ctx->argc; i++)
1985: free(ctx->argv[i]);
1986: ctx->argc = 0;
1987: r->mstackpos--;
1988: }
1989:
1.117 kristaps 1990: void
1.74 kristaps 1991: roff_endparse(struct roff *r)
1992: {
1.321 schwarze 1993: if (r->last != NULL)
1.350 schwarze 1994: mandoc_msg(MANDOCERR_BLK_NOEND, r->last->line,
1995: r->last->col, "%s", roff_name[r->last->tok]);
1.117 kristaps 1996:
1.321 schwarze 1997: if (r->eqn != NULL) {
1.350 schwarze 1998: mandoc_msg(MANDOCERR_BLK_NOEND,
1.319 schwarze 1999: r->eqn->node->line, r->eqn->node->pos, "EQ");
2000: eqn_parse(r->eqn);
2001: r->eqn = NULL;
1.125 kristaps 2002: }
2003:
1.321 schwarze 2004: if (r->tbl != NULL) {
1.346 schwarze 2005: tbl_end(r->tbl, 1);
1.321 schwarze 2006: r->tbl = NULL;
1.117 kristaps 2007: }
1.67 kristaps 2008: }
2009:
2010: /*
1.386 ! schwarze 2011: * Parse the request or macro name at buf[*pos].
! 2012: * Return ROFF_RENAMED, ROFF_USERDEF, or a ROFF_* token value.
! 2013: * For empty, undefined, mdoc(7), and man(7) macros, return TOKEN_NONE.
! 2014: * As a side effect, set r->current_string to the definition or to NULL.
1.67 kristaps 2015: */
1.294 schwarze 2016: static enum roff_tok
1.214 schwarze 2017: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.67 kristaps 2018: {
1.214 schwarze 2019: char *cp;
1.106 kristaps 2020: const char *mac;
2021: size_t maclen;
1.315 schwarze 2022: int deftype;
1.294 schwarze 2023: enum roff_tok t;
1.67 kristaps 2024:
1.214 schwarze 2025: cp = buf + *pos;
2026:
2027: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.294 schwarze 2028: return TOKEN_NONE;
1.67 kristaps 2029:
1.214 schwarze 2030: mac = cp;
2031: maclen = roff_getname(r, &cp, ln, ppos);
1.67 kristaps 2032:
1.315 schwarze 2033: deftype = ROFFDEF_USER | ROFFDEF_REN;
2034: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
2035: switch (deftype) {
2036: case ROFFDEF_USER:
2037: t = ROFF_USERDEF;
2038: break;
2039: case ROFFDEF_REN:
2040: t = ROFF_RENAMED;
2041: break;
2042: default:
2043: t = roffhash_find(r->reqtab, mac, maclen);
2044: break;
2045: }
1.294 schwarze 2046: if (t != TOKEN_NONE)
1.214 schwarze 2047: *pos = cp - buf;
1.325 schwarze 2048: else if (deftype == ROFFDEF_UNDEF) {
2049: /* Using an undefined macro defines it to be empty. */
2050: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
2051: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
2052: }
1.277 schwarze 2053: return t;
1.67 kristaps 2054: }
2055:
1.266 schwarze 2056: /* --- handling of request blocks ----------------------------------------- */
2057:
1.375 schwarze 2058: /*
2059: * Close a macro definition block or an "ignore" block.
2060: */
1.340 schwarze 2061: static int
1.76 kristaps 2062: roff_cblock(ROFF_ARGS)
1.67 kristaps 2063: {
1.375 schwarze 2064: int rr;
1.79 kristaps 2065:
1.238 schwarze 2066: if (r->last == NULL) {
1.350 schwarze 2067: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.277 schwarze 2068: return ROFF_IGN;
1.76 kristaps 2069: }
1.67 kristaps 2070:
1.81 kristaps 2071: switch (r->last->tok) {
1.207 schwarze 2072: case ROFF_am:
2073: case ROFF_ami:
2074: case ROFF_de:
2075: case ROFF_dei:
2076: case ROFF_ig:
1.81 kristaps 2077: break;
1.375 schwarze 2078: case ROFF_am1:
2079: case ROFF_de1:
2080: /* Remapped in roff_block(). */
2081: abort();
1.81 kristaps 2082: default:
1.350 schwarze 2083: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.277 schwarze 2084: return ROFF_IGN;
1.76 kristaps 2085: }
1.67 kristaps 2086:
1.375 schwarze 2087: roffnode_pop(r);
2088: roffnode_cleanscope(r);
2089:
2090: /*
2091: * If a conditional block with braces is still open,
2092: * check for "\}" block end markers.
2093: */
2094:
2095: if (r->last != NULL && r->last->endspan < 0) {
2096: rr = 1; /* If arguments follow "\}", warn about them. */
2097: roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
2098: }
2099:
1.238 schwarze 2100: if (buf->buf[pos] != '\0')
1.350 schwarze 2101: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.238 schwarze 2102: ".. %s", buf->buf + pos);
1.71 kristaps 2103:
1.277 schwarze 2104: return ROFF_IGN;
1.67 kristaps 2105: }
2106:
1.364 schwarze 2107: /*
2108: * Pop all nodes ending at the end of the current input line.
2109: * Return the number of loops ended.
2110: */
1.340 schwarze 2111: static int
1.76 kristaps 2112: roffnode_cleanscope(struct roff *r)
1.67 kristaps 2113: {
1.340 schwarze 2114: int inloop;
1.67 kristaps 2115:
1.340 schwarze 2116: inloop = 0;
1.375 schwarze 2117: while (r->last != NULL && r->last->endspan > 0) {
1.173 schwarze 2118: if (--r->last->endspan != 0)
1.76 kristaps 2119: break;
1.340 schwarze 2120: inloop += roffnode_pop(r);
1.76 kristaps 2121: }
1.340 schwarze 2122: return inloop;
1.67 kristaps 2123: }
2124:
1.364 schwarze 2125: /*
1.375 schwarze 2126: * Handle the closing "\}" of a conditional block.
1.364 schwarze 2127: * Apart from generating warnings, this only pops nodes.
2128: * Return the number of loops ended.
2129: */
1.340 schwarze 2130: static int
1.195 schwarze 2131: roff_ccond(struct roff *r, int ln, int ppos)
1.74 kristaps 2132: {
1.76 kristaps 2133: if (NULL == r->last) {
1.350 schwarze 2134: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 2135: return 0;
1.76 kristaps 2136: }
2137:
1.82 kristaps 2138: switch (r->last->tok) {
1.207 schwarze 2139: case ROFF_el:
2140: case ROFF_ie:
2141: case ROFF_if:
1.340 schwarze 2142: case ROFF_while:
1.82 kristaps 2143: break;
2144: default:
1.350 schwarze 2145: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 2146: return 0;
1.75 kristaps 2147: }
2148:
1.76 kristaps 2149: if (r->last->endspan > -1) {
1.350 schwarze 2150: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 2151: return 0;
1.76 kristaps 2152: }
2153:
1.340 schwarze 2154: return roffnode_pop(r) + roffnode_cleanscope(r);
1.76 kristaps 2155: }
2156:
1.340 schwarze 2157: static int
1.80 kristaps 2158: roff_block(ROFF_ARGS)
1.76 kristaps 2159: {
1.315 schwarze 2160: const char *name, *value;
2161: char *call, *cp, *iname, *rname;
2162: size_t csz, namesz, rsz;
2163: int deftype;
1.106 kristaps 2164:
1.220 schwarze 2165: /* Ignore groff compatibility mode for now. */
1.76 kristaps 2166:
1.238 schwarze 2167: if (tok == ROFF_de1)
1.220 schwarze 2168: tok = ROFF_de;
1.251 schwarze 2169: else if (tok == ROFF_dei1)
2170: tok = ROFF_dei;
1.238 schwarze 2171: else if (tok == ROFF_am1)
1.220 schwarze 2172: tok = ROFF_am;
1.251 schwarze 2173: else if (tok == ROFF_ami1)
2174: tok = ROFF_ami;
1.220 schwarze 2175:
2176: /* Parse the macro name argument. */
2177:
1.238 schwarze 2178: cp = buf->buf + pos;
2179: if (tok == ROFF_ig) {
1.220 schwarze 2180: iname = NULL;
2181: namesz = 0;
2182: } else {
2183: iname = cp;
2184: namesz = roff_getname(r, &cp, ln, ppos);
2185: iname[namesz] = '\0';
2186: }
1.107 kristaps 2187:
1.220 schwarze 2188: /* Resolve the macro name argument if it is indirect. */
1.107 kristaps 2189:
1.238 schwarze 2190: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 2191: deftype = ROFFDEF_USER;
2192: name = roff_getstrn(r, iname, namesz, &deftype);
2193: if (name == NULL) {
1.350 schwarze 2194: mandoc_msg(MANDOCERR_STR_UNDEF,
2195: ln, (int)(iname - buf->buf),
1.220 schwarze 2196: "%.*s", (int)namesz, iname);
2197: namesz = 0;
2198: } else
2199: namesz = strlen(name);
2200: } else
2201: name = iname;
1.107 kristaps 2202:
1.238 schwarze 2203: if (namesz == 0 && tok != ROFF_ig) {
1.350 schwarze 2204: mandoc_msg(MANDOCERR_REQ_EMPTY,
2205: ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2206: return ROFF_IGN;
1.220 schwarze 2207: }
1.80 kristaps 2208:
1.106 kristaps 2209: roffnode_push(r, tok, name, ln, ppos);
2210:
2211: /*
2212: * At the beginning of a `de' macro, clear the existing string
2213: * with the same name, if there is one. New content will be
1.193 schwarze 2214: * appended from roff_block_text() in multiline mode.
1.106 kristaps 2215: */
1.107 kristaps 2216:
1.311 schwarze 2217: if (tok == ROFF_de || tok == ROFF_dei) {
1.213 schwarze 2218: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.311 schwarze 2219: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.315 schwarze 2220: } else if (tok == ROFF_am || tok == ROFF_ami) {
2221: deftype = ROFFDEF_ANY;
2222: value = roff_getstrn(r, iname, namesz, &deftype);
2223: switch (deftype) { /* Before appending, ... */
2224: case ROFFDEF_PRE: /* copy predefined to user-defined. */
2225: roff_setstrn(&r->strtab, name, namesz,
2226: value, strlen(value), 0);
2227: break;
2228: case ROFFDEF_REN: /* call original standard macro. */
2229: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2230: (int)strlen(value), value);
2231: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2232: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
2233: free(call);
2234: break;
2235: case ROFFDEF_STD: /* rename and call standard macro. */
2236: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
2237: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
2238: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2239: (int)rsz, rname);
2240: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2241: free(call);
2242: free(rname);
2243: break;
2244: default:
2245: break;
2246: }
1.311 schwarze 2247: }
1.76 kristaps 2248:
1.238 schwarze 2249: if (*cp == '\0')
1.277 schwarze 2250: return ROFF_IGN;
1.78 kristaps 2251:
1.220 schwarze 2252: /* Get the custom end marker. */
1.107 kristaps 2253:
1.220 schwarze 2254: iname = cp;
1.213 schwarze 2255: namesz = roff_getname(r, &cp, ln, ppos);
1.220 schwarze 2256:
2257: /* Resolve the end marker if it is indirect. */
2258:
1.238 schwarze 2259: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 2260: deftype = ROFFDEF_USER;
2261: name = roff_getstrn(r, iname, namesz, &deftype);
2262: if (name == NULL) {
1.350 schwarze 2263: mandoc_msg(MANDOCERR_STR_UNDEF,
2264: ln, (int)(iname - buf->buf),
1.220 schwarze 2265: "%.*s", (int)namesz, iname);
2266: namesz = 0;
2267: } else
2268: namesz = strlen(name);
2269: } else
2270: name = iname;
2271:
1.213 schwarze 2272: if (namesz)
2273: r->last->end = mandoc_strndup(name, namesz);
1.78 kristaps 2274:
1.238 schwarze 2275: if (*cp != '\0')
1.350 schwarze 2276: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.295 schwarze 2277: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.74 kristaps 2278:
1.277 schwarze 2279: return ROFF_IGN;
1.78 kristaps 2280: }
2281:
1.340 schwarze 2282: static int
1.80 kristaps 2283: roff_block_sub(ROFF_ARGS)
1.79 kristaps 2284: {
1.294 schwarze 2285: enum roff_tok t;
1.79 kristaps 2286: int i, j;
2287:
2288: /*
1.385 schwarze 2289: * If a custom end marker is a user-defined or predefined macro
2290: * or a request, interpret it.
1.79 kristaps 2291: */
2292:
2293: if (r->last->end) {
1.130 kristaps 2294: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.238 schwarze 2295: if (buf->buf[i] != r->last->end[j])
1.79 kristaps 2296: break;
2297:
1.238 schwarze 2298: if (r->last->end[j] == '\0' &&
2299: (buf->buf[i] == '\0' ||
2300: buf->buf[i] == ' ' ||
2301: buf->buf[i] == '\t')) {
1.79 kristaps 2302: roffnode_pop(r);
2303: roffnode_cleanscope(r);
2304:
1.238 schwarze 2305: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.130 kristaps 2306: i++;
2307:
2308: pos = i;
1.238 schwarze 2309: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.294 schwarze 2310: TOKEN_NONE)
1.277 schwarze 2311: return ROFF_RERUN;
2312: return ROFF_IGN;
1.79 kristaps 2313: }
2314: }
2315:
1.385 schwarze 2316: /* Handle the standard end marker. */
1.79 kristaps 2317:
1.238 schwarze 2318: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.385 schwarze 2319: if (t == ROFF_cblock)
2320: return roff_cblock(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 2321:
1.385 schwarze 2322: /* Not an end marker, so append the line to the block. */
1.79 kristaps 2323:
1.385 schwarze 2324: if (tok != ROFF_ig)
2325: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
2326: return ROFF_IGN;
1.79 kristaps 2327: }
2328:
1.340 schwarze 2329: static int
1.80 kristaps 2330: roff_block_text(ROFF_ARGS)
1.78 kristaps 2331: {
2332:
1.238 schwarze 2333: if (tok != ROFF_ig)
2334: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.106 kristaps 2335:
1.277 schwarze 2336: return ROFF_IGN;
1.78 kristaps 2337: }
2338:
1.375 schwarze 2339: /*
2340: * Check for a closing "\}" and handle it.
2341: * In this function, the final "int *offs" argument is used for
2342: * different purposes than elsewhere:
2343: * Input: *offs == 0: caller wants to discard arguments following \}
2344: * *offs == 1: caller wants to preserve text following \}
2345: * Output: *offs = 0: tell caller to discard input line
2346: * *offs = 1: tell caller to use input line
2347: */
1.340 schwarze 2348: static int
1.375 schwarze 2349: roff_cond_checkend(ROFF_ARGS)
1.82 kristaps 2350: {
1.340 schwarze 2351: char *ep;
2352: int endloop, irc, rr;
1.82 kristaps 2353:
1.340 schwarze 2354: irc = ROFF_IGN;
1.82 kristaps 2355: rr = r->last->rule;
1.340 schwarze 2356: endloop = tok != ROFF_while ? ROFF_IGN :
2357: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2358: if (roffnode_cleanscope(r))
2359: irc |= endloop;
1.144 kristaps 2360:
1.196 schwarze 2361: /*
1.375 schwarze 2362: * If "\}" occurs on a macro line without a preceding macro or
2363: * a text line contains nothing else, drop the line completely.
1.196 schwarze 2364: */
2365:
1.238 schwarze 2366: ep = buf->buf + pos;
1.375 schwarze 2367: if (ep[0] == '\\' && ep[1] == '}' && (ep[2] == '\0' || *offs == 0))
1.198 schwarze 2368: rr = 0;
1.196 schwarze 2369:
1.343 schwarze 2370: /*
1.375 schwarze 2371: * The closing delimiter "\}" rewinds the conditional scope
1.343 schwarze 2372: * but is otherwise ignored when interpreting the line.
2373: */
1.144 kristaps 2374:
1.238 schwarze 2375: while ((ep = strchr(ep, '\\')) != NULL) {
1.318 schwarze 2376: switch (ep[1]) {
2377: case '}':
1.376 schwarze 2378: if (ep[2] == '\0')
2379: ep[0] = '\0';
2380: else if (rr)
1.375 schwarze 2381: ep[1] = '&';
2382: else
2383: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1.340 schwarze 2384: if (roff_ccond(r, ln, ep - buf->buf))
2385: irc |= endloop;
1.318 schwarze 2386: break;
2387: case '\0':
2388: ++ep;
2389: break;
2390: default:
2391: ep += 2;
2392: break;
1.197 schwarze 2393: }
1.177 schwarze 2394: }
1.375 schwarze 2395: *offs = rr;
2396: return irc;
2397: }
1.318 schwarze 2398:
1.375 schwarze 2399: /*
2400: * Parse and process a request or macro line in conditional scope.
2401: */
2402: static int
2403: roff_cond_sub(ROFF_ARGS)
2404: {
2405: struct roffnode *bl;
1.386 ! schwarze 2406: int irc, rr, spos;
1.375 schwarze 2407: enum roff_tok t;
2408:
2409: rr = 0; /* If arguments follow "\}", skip them. */
2410: irc = roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
1.386 ! schwarze 2411: spos = pos;
1.368 schwarze 2412: t = roff_parse(r, buf->buf, &pos, ln, ppos);
2413:
1.318 schwarze 2414: /*
1.386 ! schwarze 2415: * Handle requests and macros if the conditional evaluated
! 2416: * to true or if they are structurally required.
! 2417: * The .break request is always handled specially.
1.318 schwarze 2418: */
2419:
1.364 schwarze 2420: if (t == ROFF_break) {
2421: if (irc & ROFF_LOOPMASK)
2422: irc = ROFF_IGN | ROFF_LOOPEXIT;
2423: else if (rr) {
2424: for (bl = r->last; bl != NULL; bl = bl->parent) {
2425: bl->rule = 0;
2426: if (bl->tok == ROFF_while)
2427: break;
2428: }
2429: }
1.386 ! schwarze 2430: } else if (rr || (t < TOKEN_NONE && roffs[t].flags & ROFFMAC_STRUCT)) {
! 2431: irc |= roff_req_or_macro(r, t, buf, ln, spos, pos, offs);
1.383 schwarze 2432: if (irc & ROFF_WHILE)
2433: irc &= ~(ROFF_LOOPCONT | ROFF_LOOPEXIT);
1.386 ! schwarze 2434: }
1.340 schwarze 2435: return irc;
1.82 kristaps 2436: }
2437:
1.375 schwarze 2438: /*
2439: * Parse and process a text line in conditional scope.
2440: */
1.340 schwarze 2441: static int
1.82 kristaps 2442: roff_cond_text(ROFF_ARGS)
1.78 kristaps 2443: {
1.375 schwarze 2444: int irc, rr;
1.343 schwarze 2445:
1.375 schwarze 2446: rr = 1; /* If arguments follow "\}", preserve them. */
2447: irc = roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
1.340 schwarze 2448: if (rr)
2449: irc |= ROFF_CONT;
2450: return irc;
1.74 kristaps 2451: }
2452:
1.266 schwarze 2453: /* --- handling of numeric and conditional expressions -------------------- */
2454:
1.204 schwarze 2455: /*
2456: * Parse a single signed integer number. Stop at the first non-digit.
2457: * If there is at least one digit, return success and advance the
2458: * parse point, else return failure and let the parse point unchanged.
2459: * Ignore overflows, treat them just like the C language.
2460: */
1.184 schwarze 2461: static int
1.261 schwarze 2462: roff_getnum(const char *v, int *pos, int *res, int flags)
1.184 schwarze 2463: {
1.261 schwarze 2464: int myres, scaled, n, p;
1.206 schwarze 2465:
2466: if (NULL == res)
2467: res = &myres;
1.184 schwarze 2468:
2469: p = *pos;
2470: n = v[p] == '-';
1.261 schwarze 2471: if (n || v[p] == '+')
1.184 schwarze 2472: p++;
2473:
1.261 schwarze 2474: if (flags & ROFFNUM_WHITE)
2475: while (isspace((unsigned char)v[p]))
2476: p++;
2477:
1.184 schwarze 2478: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.204 schwarze 2479: *res = 10 * *res + v[p] - '0';
1.184 schwarze 2480: if (p == *pos + n)
2481: return 0;
2482:
2483: if (n)
2484: *res = -*res;
2485:
1.254 schwarze 2486: /* Each number may be followed by one optional scaling unit. */
2487:
2488: switch (v[p]) {
2489: case 'f':
1.261 schwarze 2490: scaled = *res * 65536;
1.254 schwarze 2491: break;
2492: case 'i':
1.261 schwarze 2493: scaled = *res * 240;
1.254 schwarze 2494: break;
2495: case 'c':
1.261 schwarze 2496: scaled = *res * 240 / 2.54;
1.254 schwarze 2497: break;
2498: case 'v':
2499: case 'P':
1.261 schwarze 2500: scaled = *res * 40;
1.254 schwarze 2501: break;
2502: case 'm':
2503: case 'n':
1.261 schwarze 2504: scaled = *res * 24;
1.254 schwarze 2505: break;
2506: case 'p':
1.261 schwarze 2507: scaled = *res * 10 / 3;
1.254 schwarze 2508: break;
2509: case 'u':
1.261 schwarze 2510: scaled = *res;
1.254 schwarze 2511: break;
2512: case 'M':
1.261 schwarze 2513: scaled = *res * 6 / 25;
1.254 schwarze 2514: break;
2515: default:
1.261 schwarze 2516: scaled = *res;
1.254 schwarze 2517: p--;
2518: break;
2519: }
1.261 schwarze 2520: if (flags & ROFFNUM_SCALE)
2521: *res = scaled;
1.254 schwarze 2522:
2523: *pos = p + 1;
1.277 schwarze 2524: return 1;
1.184 schwarze 2525: }
2526:
1.198 schwarze 2527: /*
2528: * Evaluate a string comparison condition.
2529: * The first character is the delimiter.
2530: * Succeed if the string up to its second occurrence
2531: * matches the string up to its third occurence.
2532: * Advance the cursor after the third occurrence
2533: * or lacking that, to the end of the line.
2534: */
2535: static int
2536: roff_evalstrcond(const char *v, int *pos)
2537: {
2538: const char *s1, *s2, *s3;
2539: int match;
2540:
2541: match = 0;
2542: s1 = v + *pos; /* initial delimiter */
2543: s2 = s1 + 1; /* for scanning the first string */
2544: s3 = strchr(s2, *s1); /* for scanning the second string */
2545:
2546: if (NULL == s3) /* found no middle delimiter */
2547: goto out;
2548:
2549: while ('\0' != *++s3) {
2550: if (*s2 != *s3) { /* mismatch */
2551: s3 = strchr(s3, *s1);
2552: break;
2553: }
2554: if (*s3 == *s1) { /* found the final delimiter */
2555: match = 1;
2556: break;
2557: }
2558: s2++;
2559: }
2560:
2561: out:
2562: if (NULL == s3)
2563: s3 = strchr(s2, '\0');
1.242 schwarze 2564: else if (*s3 != '\0')
1.198 schwarze 2565: s3++;
2566: *pos = s3 - v;
1.277 schwarze 2567: return match;
1.198 schwarze 2568: }
2569:
1.204 schwarze 2570: /*
2571: * Evaluate an optionally negated single character, numerical,
2572: * or string condition.
2573: */
1.198 schwarze 2574: static int
1.271 schwarze 2575: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.88 kristaps 2576: {
1.336 schwarze 2577: const char *start, *end;
2578: char *cp, *name;
2579: size_t sz;
2580: int deftype, len, number, savepos, istrue, wanttrue;
1.88 kristaps 2581:
1.198 schwarze 2582: if ('!' == v[*pos]) {
2583: wanttrue = 0;
2584: (*pos)++;
2585: } else
2586: wanttrue = 1;
2587:
1.88 kristaps 2588: switch (v[*pos]) {
1.240 schwarze 2589: case '\0':
1.277 schwarze 2590: return 0;
1.207 schwarze 2591: case 'n':
2592: case 'o':
1.88 kristaps 2593: (*pos)++;
1.277 schwarze 2594: return wanttrue;
1.207 schwarze 2595: case 'e':
2596: case 't':
1.239 schwarze 2597: case 'v':
1.88 kristaps 2598: (*pos)++;
1.277 schwarze 2599: return !wanttrue;
1.336 schwarze 2600: case 'c':
2601: do {
2602: (*pos)++;
2603: } while (v[*pos] == ' ');
2604:
2605: /*
2606: * Quirk for groff compatibility:
2607: * The horizontal tab is neither available nor unavailable.
2608: */
2609:
2610: if (v[*pos] == '\t') {
2611: (*pos)++;
2612: return 0;
2613: }
2614:
2615: /* Printable ASCII characters are available. */
2616:
2617: if (v[*pos] != '\\') {
2618: (*pos)++;
2619: return wanttrue;
2620: }
2621:
2622: end = v + ++*pos;
2623: switch (mandoc_escape(&end, &start, &len)) {
2624: case ESCAPE_SPECIAL:
2625: istrue = mchars_spec2cp(start, len) != -1;
2626: break;
2627: case ESCAPE_UNICODE:
2628: istrue = 1;
2629: break;
2630: case ESCAPE_NUMBERED:
2631: istrue = mchars_num2char(start, len) != -1;
2632: break;
2633: default:
2634: istrue = !wanttrue;
2635: break;
2636: }
2637: *pos = end - v;
2638: return istrue == wanttrue;
1.310 schwarze 2639: case 'd':
1.271 schwarze 2640: case 'r':
1.310 schwarze 2641: cp = v + *pos + 1;
2642: while (*cp == ' ')
2643: cp++;
2644: name = cp;
2645: sz = roff_getname(r, &cp, ln, cp - v);
1.315 schwarze 2646: if (sz == 0)
2647: istrue = 0;
2648: else if (v[*pos] == 'r')
2649: istrue = roff_hasregn(r, name, sz);
2650: else {
2651: deftype = ROFFDEF_ANY;
2652: roff_getstrn(r, name, sz, &deftype);
2653: istrue = !!deftype;
2654: }
1.363 schwarze 2655: *pos = (name + sz) - v;
1.310 schwarze 2656: return istrue == wanttrue;
1.88 kristaps 2657: default:
2658: break;
2659: }
2660:
1.241 schwarze 2661: savepos = *pos;
1.261 schwarze 2662: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.277 schwarze 2663: return (number > 0) == wanttrue;
1.241 schwarze 2664: else if (*pos == savepos)
1.277 schwarze 2665: return roff_evalstrcond(v, pos) == wanttrue;
1.204 schwarze 2666: else
1.277 schwarze 2667: return 0;
1.88 kristaps 2668: }
2669:
1.340 schwarze 2670: static int
1.103 kristaps 2671: roff_line_ignore(ROFF_ARGS)
1.89 kristaps 2672: {
1.123 schwarze 2673:
1.277 schwarze 2674: return ROFF_IGN;
1.89 kristaps 2675: }
2676:
1.340 schwarze 2677: static int
1.251 schwarze 2678: roff_insec(ROFF_ARGS)
2679: {
2680:
1.350 schwarze 2681: mandoc_msg(MANDOCERR_REQ_INSEC, ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2682: return ROFF_IGN;
1.251 schwarze 2683: }
2684:
1.340 schwarze 2685: static int
1.251 schwarze 2686: roff_unsupp(ROFF_ARGS)
2687: {
2688:
1.350 schwarze 2689: mandoc_msg(MANDOCERR_REQ_UNSUPP, ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2690: return ROFF_IGN;
1.251 schwarze 2691: }
2692:
1.340 schwarze 2693: static int
1.82 kristaps 2694: roff_cond(ROFF_ARGS)
1.74 kristaps 2695: {
1.340 schwarze 2696: int irc;
1.173 schwarze 2697:
2698: roffnode_push(r, tok, NULL, ln, ppos);
1.74 kristaps 2699:
1.207 schwarze 2700: /*
1.134 kristaps 2701: * An `.el' has no conditional body: it will consume the value
2702: * of the current rstack entry set in prior `ie' calls or
1.207 schwarze 2703: * defaults to DENY.
1.134 kristaps 2704: *
2705: * If we're not an `el', however, then evaluate the conditional.
2706: */
1.133 kristaps 2707:
1.238 schwarze 2708: r->last->rule = tok == ROFF_el ?
1.207 schwarze 2709: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.238 schwarze 2710: roff_evalcond(r, ln, buf->buf, &pos);
1.77 kristaps 2711:
1.134 kristaps 2712: /*
2713: * An if-else will put the NEGATION of the current evaluated
2714: * conditional into the stack of rules.
2715: */
2716:
1.238 schwarze 2717: if (tok == ROFF_ie) {
1.223 schwarze 2718: if (r->rstackpos + 1 == r->rstacksz) {
2719: r->rstacksz += 16;
2720: r->rstack = mandoc_reallocarray(r->rstack,
2721: r->rstacksz, sizeof(int));
1.134 kristaps 2722: }
1.198 schwarze 2723: r->rstack[++r->rstackpos] = !r->last->rule;
1.82 kristaps 2724: }
1.88 kristaps 2725:
2726: /* If the parent has false as its rule, then so do we. */
2727:
1.198 schwarze 2728: if (r->last->parent && !r->last->parent->rule)
2729: r->last->rule = 0;
1.88 kristaps 2730:
2731: /*
1.173 schwarze 2732: * Determine scope.
2733: * If there is nothing on the line after the conditional,
2734: * not even whitespace, use next-line scope.
1.340 schwarze 2735: * Except that .while does not support next-line scope.
1.88 kristaps 2736: */
1.74 kristaps 2737:
1.340 schwarze 2738: if (buf->buf[pos] == '\0' && tok != ROFF_while) {
1.173 schwarze 2739: r->last->endspan = 2;
2740: goto out;
2741: }
2742:
1.238 schwarze 2743: while (buf->buf[pos] == ' ')
1.173 schwarze 2744: pos++;
2745:
2746: /* An opening brace requests multiline scope. */
1.75 kristaps 2747:
1.238 schwarze 2748: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.75 kristaps 2749: r->last->endspan = -1;
2750: pos += 2;
1.272 schwarze 2751: while (buf->buf[pos] == ' ')
2752: pos++;
1.173 schwarze 2753: goto out;
1.207 schwarze 2754: }
1.74 kristaps 2755:
1.77 kristaps 2756: /*
1.173 schwarze 2757: * Anything else following the conditional causes
2758: * single-line scope. Warn if the scope contains
2759: * nothing but trailing whitespace.
1.77 kristaps 2760: */
2761:
1.238 schwarze 2762: if (buf->buf[pos] == '\0')
1.350 schwarze 2763: mandoc_msg(MANDOCERR_COND_EMPTY,
2764: ln, ppos, "%s", roff_name[tok]);
1.77 kristaps 2765:
1.173 schwarze 2766: r->last->endspan = 1;
1.74 kristaps 2767:
1.173 schwarze 2768: out:
1.75 kristaps 2769: *offs = pos;
1.340 schwarze 2770: irc = ROFF_RERUN;
2771: if (tok == ROFF_while)
2772: irc |= ROFF_WHILE;
2773: return irc;
1.83 schwarze 2774: }
2775:
1.340 schwarze 2776: static int
1.92 schwarze 2777: roff_ds(ROFF_ARGS)
2778: {
1.212 schwarze 2779: char *string;
2780: const char *name;
2781: size_t namesz;
1.96 kristaps 2782:
1.251 schwarze 2783: /* Ignore groff compatibility mode for now. */
2784:
2785: if (tok == ROFF_ds1)
2786: tok = ROFF_ds;
2787: else if (tok == ROFF_as1)
2788: tok = ROFF_as;
2789:
1.96 kristaps 2790: /*
1.212 schwarze 2791: * The first word is the name of the string.
2792: * If it is empty or terminated by an escape sequence,
2793: * abort the `ds' request without defining anything.
1.96 kristaps 2794: */
1.92 schwarze 2795:
1.238 schwarze 2796: name = string = buf->buf + pos;
2797: if (*name == '\0')
1.277 schwarze 2798: return ROFF_IGN;
1.92 schwarze 2799:
1.212 schwarze 2800: namesz = roff_getname(r, &string, ln, pos);
1.363 schwarze 2801: switch (name[namesz]) {
2802: case '\\':
1.277 schwarze 2803: return ROFF_IGN;
1.363 schwarze 2804: case '\t':
2805: string = buf->buf + pos + namesz;
2806: break;
2807: default:
2808: break;
2809: }
1.212 schwarze 2810:
2811: /* Read past the initial double-quote, if any. */
1.238 schwarze 2812: if (*string == '"')
1.92 schwarze 2813: string++;
2814:
1.96 kristaps 2815: /* The rest is the value. */
1.212 schwarze 2816: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2817: ROFF_as == tok);
1.311 schwarze 2818: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.277 schwarze 2819: return ROFF_IGN;
1.92 schwarze 2820: }
2821:
1.204 schwarze 2822: /*
2823: * Parse a single operator, one or two characters long.
2824: * If the operator is recognized, return success and advance the
2825: * parse point, else return failure and let the parse point unchanged.
2826: */
2827: static int
2828: roff_getop(const char *v, int *pos, char *res)
2829: {
2830:
2831: *res = v[*pos];
2832:
2833: switch (*res) {
1.207 schwarze 2834: case '+':
2835: case '-':
2836: case '*':
2837: case '/':
2838: case '%':
2839: case '&':
2840: case ':':
1.204 schwarze 2841: break;
2842: case '<':
2843: switch (v[*pos + 1]) {
1.207 schwarze 2844: case '=':
1.204 schwarze 2845: *res = 'l';
2846: (*pos)++;
2847: break;
1.207 schwarze 2848: case '>':
1.204 schwarze 2849: *res = '!';
2850: (*pos)++;
2851: break;
1.207 schwarze 2852: case '?':
1.204 schwarze 2853: *res = 'i';
2854: (*pos)++;
2855: break;
2856: default:
2857: break;
2858: }
2859: break;
2860: case '>':
2861: switch (v[*pos + 1]) {
1.207 schwarze 2862: case '=':
1.204 schwarze 2863: *res = 'g';
2864: (*pos)++;
2865: break;
1.207 schwarze 2866: case '?':
1.204 schwarze 2867: *res = 'a';
2868: (*pos)++;
2869: break;
2870: default:
2871: break;
2872: }
2873: break;
2874: case '=':
2875: if ('=' == v[*pos + 1])
2876: (*pos)++;
2877: break;
2878: default:
1.277 schwarze 2879: return 0;
1.204 schwarze 2880: }
2881: (*pos)++;
2882:
1.277 schwarze 2883: return *res;
1.204 schwarze 2884: }
2885:
2886: /*
2887: * Evaluate either a parenthesized numeric expression
2888: * or a single signed integer number.
2889: */
2890: static int
1.235 schwarze 2891: roff_evalpar(struct roff *r, int ln,
1.261 schwarze 2892: const char *v, int *pos, int *res, int flags)
1.204 schwarze 2893: {
2894:
2895: if ('(' != v[*pos])
1.277 schwarze 2896: return roff_getnum(v, pos, res, flags);
1.204 schwarze 2897:
2898: (*pos)++;
1.261 schwarze 2899: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.277 schwarze 2900: return 0;
1.204 schwarze 2901:
1.206 schwarze 2902: /*
2903: * Omission of the closing parenthesis
2904: * is an error in validation mode,
2905: * but ignored in evaluation mode.
2906: */
2907:
1.204 schwarze 2908: if (')' == v[*pos])
2909: (*pos)++;
1.206 schwarze 2910: else if (NULL == res)
1.277 schwarze 2911: return 0;
1.204 schwarze 2912:
1.277 schwarze 2913: return 1;
1.204 schwarze 2914: }
2915:
2916: /*
2917: * Evaluate a complete numeric expression.
2918: * Proceed left to right, there is no concept of precedence.
2919: */
2920: static int
1.235 schwarze 2921: roff_evalnum(struct roff *r, int ln, const char *v,
1.261 schwarze 2922: int *pos, int *res, int flags)
1.204 schwarze 2923: {
2924: int mypos, operand2;
2925: char operator;
2926:
2927: if (NULL == pos) {
2928: mypos = 0;
2929: pos = &mypos;
2930: }
2931:
1.261 schwarze 2932: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2933: while (isspace((unsigned char)v[*pos]))
2934: (*pos)++;
2935:
1.261 schwarze 2936: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.277 schwarze 2937: return 0;
1.204 schwarze 2938:
2939: while (1) {
1.261 schwarze 2940: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2941: while (isspace((unsigned char)v[*pos]))
2942: (*pos)++;
2943:
2944: if ( ! roff_getop(v, pos, &operator))
2945: break;
2946:
1.261 schwarze 2947: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2948: while (isspace((unsigned char)v[*pos]))
2949: (*pos)++;
2950:
1.261 schwarze 2951: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.277 schwarze 2952: return 0;
1.204 schwarze 2953:
1.261 schwarze 2954: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2955: while (isspace((unsigned char)v[*pos]))
2956: (*pos)++;
1.206 schwarze 2957:
2958: if (NULL == res)
2959: continue;
1.204 schwarze 2960:
2961: switch (operator) {
1.207 schwarze 2962: case '+':
1.204 schwarze 2963: *res += operand2;
2964: break;
1.207 schwarze 2965: case '-':
1.204 schwarze 2966: *res -= operand2;
2967: break;
1.207 schwarze 2968: case '*':
1.204 schwarze 2969: *res *= operand2;
2970: break;
1.207 schwarze 2971: case '/':
1.244 schwarze 2972: if (operand2 == 0) {
1.235 schwarze 2973: mandoc_msg(MANDOCERR_DIVZERO,
1.350 schwarze 2974: ln, *pos, "%s", v);
1.234 kristaps 2975: *res = 0;
2976: break;
2977: }
1.204 schwarze 2978: *res /= operand2;
2979: break;
1.207 schwarze 2980: case '%':
1.244 schwarze 2981: if (operand2 == 0) {
2982: mandoc_msg(MANDOCERR_DIVZERO,
1.350 schwarze 2983: ln, *pos, "%s", v);
1.244 schwarze 2984: *res = 0;
2985: break;
2986: }
1.204 schwarze 2987: *res %= operand2;
2988: break;
1.207 schwarze 2989: case '<':
1.204 schwarze 2990: *res = *res < operand2;
2991: break;
1.207 schwarze 2992: case '>':
1.204 schwarze 2993: *res = *res > operand2;
2994: break;
1.207 schwarze 2995: case 'l':
1.204 schwarze 2996: *res = *res <= operand2;
2997: break;
1.207 schwarze 2998: case 'g':
1.204 schwarze 2999: *res = *res >= operand2;
3000: break;
1.207 schwarze 3001: case '=':
1.204 schwarze 3002: *res = *res == operand2;
3003: break;
1.207 schwarze 3004: case '!':
1.204 schwarze 3005: *res = *res != operand2;
3006: break;
1.207 schwarze 3007: case '&':
1.204 schwarze 3008: *res = *res && operand2;
3009: break;
1.207 schwarze 3010: case ':':
1.204 schwarze 3011: *res = *res || operand2;
3012: break;
1.207 schwarze 3013: case 'i':
1.204 schwarze 3014: if (operand2 < *res)
3015: *res = operand2;
3016: break;
1.207 schwarze 3017: case 'a':
1.204 schwarze 3018: if (operand2 > *res)
3019: *res = operand2;
3020: break;
3021: default:
3022: abort();
3023: }
3024: }
1.277 schwarze 3025: return 1;
1.204 schwarze 3026: }
3027:
1.266 schwarze 3028: /* --- register management ------------------------------------------------ */
3029:
1.180 schwarze 3030: void
1.187 schwarze 3031: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.147 kristaps 3032: {
1.327 schwarze 3033: roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
1.326 schwarze 3034: }
3035:
3036: static void
3037: roff_setregn(struct roff *r, const char *name, size_t len,
1.327 schwarze 3038: int val, char sign, int step)
1.326 schwarze 3039: {
1.180 schwarze 3040: struct roffreg *reg;
3041:
3042: /* Search for an existing register with the same name. */
3043: reg = r->regtab;
3044:
1.326 schwarze 3045: while (reg != NULL && (reg->key.sz != len ||
3046: strncmp(reg->key.p, name, len) != 0))
1.180 schwarze 3047: reg = reg->next;
1.147 kristaps 3048:
1.180 schwarze 3049: if (NULL == reg) {
3050: /* Create a new register. */
3051: reg = mandoc_malloc(sizeof(struct roffreg));
1.326 schwarze 3052: reg->key.p = mandoc_strndup(name, len);
3053: reg->key.sz = len;
1.187 schwarze 3054: reg->val = 0;
1.327 schwarze 3055: reg->step = 0;
1.180 schwarze 3056: reg->next = r->regtab;
3057: r->regtab = reg;
3058: }
3059:
1.187 schwarze 3060: if ('+' == sign)
3061: reg->val += val;
3062: else if ('-' == sign)
3063: reg->val -= val;
3064: else
3065: reg->val = val;
1.327 schwarze 3066: if (step != INT_MIN)
3067: reg->step = step;
1.147 kristaps 3068: }
3069:
1.192 schwarze 3070: /*
3071: * Handle some predefined read-only number registers.
3072: * For now, return -1 if the requested register is not predefined;
3073: * in case a predefined read-only register having the value -1
3074: * were to turn up, another special value would have to be chosen.
3075: */
3076: static int
1.273 schwarze 3077: roff_getregro(const struct roff *r, const char *name)
1.192 schwarze 3078: {
3079:
3080: switch (*name) {
1.273 schwarze 3081: case '$': /* Number of arguments of the last macro evaluated. */
1.339 schwarze 3082: return r->mstackpos < 0 ? 0 : r->mstack[r->mstackpos].argc;
1.207 schwarze 3083: case 'A': /* ASCII approximation mode is always off. */
1.277 schwarze 3084: return 0;
1.207 schwarze 3085: case 'g': /* Groff compatibility mode is always on. */
1.277 schwarze 3086: return 1;
1.207 schwarze 3087: case 'H': /* Fixed horizontal resolution. */
1.277 schwarze 3088: return 24;
1.207 schwarze 3089: case 'j': /* Always adjust left margin only. */
1.277 schwarze 3090: return 0;
1.207 schwarze 3091: case 'T': /* Some output device is always defined. */
1.277 schwarze 3092: return 1;
1.207 schwarze 3093: case 'V': /* Fixed vertical resolution. */
1.277 schwarze 3094: return 40;
1.192 schwarze 3095: default:
1.277 schwarze 3096: return -1;
1.192 schwarze 3097: }
3098: }
3099:
1.181 schwarze 3100: int
1.326 schwarze 3101: roff_getreg(struct roff *r, const char *name)
1.147 kristaps 3102: {
1.327 schwarze 3103: return roff_getregn(r, name, strlen(name), '\0');
1.181 schwarze 3104: }
3105:
3106: static int
1.327 schwarze 3107: roff_getregn(struct roff *r, const char *name, size_t len, char sign)
1.181 schwarze 3108: {
3109: struct roffreg *reg;
1.192 schwarze 3110: int val;
3111:
3112: if ('.' == name[0] && 2 == len) {
1.273 schwarze 3113: val = roff_getregro(r, name + 1);
1.192 schwarze 3114: if (-1 != val)
1.277 schwarze 3115: return val;
1.192 schwarze 3116: }
1.181 schwarze 3117:
1.327 schwarze 3118: for (reg = r->regtab; reg; reg = reg->next) {
1.181 schwarze 3119: if (len == reg->key.sz &&
1.327 schwarze 3120: 0 == strncmp(name, reg->key.p, len)) {
3121: switch (sign) {
3122: case '+':
3123: reg->val += reg->step;
3124: break;
3125: case '-':
3126: reg->val -= reg->step;
3127: break;
3128: default:
3129: break;
3130: }
1.277 schwarze 3131: return reg->val;
1.327 schwarze 3132: }
3133: }
1.271 schwarze 3134:
1.327 schwarze 3135: roff_setregn(r, name, len, 0, '\0', INT_MIN);
1.277 schwarze 3136: return 0;
1.271 schwarze 3137: }
3138:
3139: static int
3140: roff_hasregn(const struct roff *r, const char *name, size_t len)
3141: {
3142: struct roffreg *reg;
3143: int val;
3144:
3145: if ('.' == name[0] && 2 == len) {
1.273 schwarze 3146: val = roff_getregro(r, name + 1);
1.271 schwarze 3147: if (-1 != val)
1.277 schwarze 3148: return 1;
1.271 schwarze 3149: }
3150:
3151: for (reg = r->regtab; reg; reg = reg->next)
3152: if (len == reg->key.sz &&
3153: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 3154: return 1;
1.147 kristaps 3155:
1.277 schwarze 3156: return 0;
1.147 kristaps 3157: }
3158:
1.180 schwarze 3159: static void
3160: roff_freereg(struct roffreg *reg)
1.147 kristaps 3161: {
1.180 schwarze 3162: struct roffreg *old_reg;
1.147 kristaps 3163:
1.180 schwarze 3164: while (NULL != reg) {
3165: free(reg->key.p);
3166: old_reg = reg;
3167: reg = reg->next;
3168: free(old_reg);
3169: }
1.147 kristaps 3170: }
1.92 schwarze 3171:
1.340 schwarze 3172: static int
1.89 kristaps 3173: roff_nr(ROFF_ARGS)
1.83 schwarze 3174: {
1.327 schwarze 3175: char *key, *val, *step;
1.212 schwarze 3176: size_t keysz;
1.327 schwarze 3177: int iv, is, len;
1.187 schwarze 3178: char sign;
1.89 kristaps 3179:
1.238 schwarze 3180: key = val = buf->buf + pos;
3181: if (*key == '\0')
1.277 schwarze 3182: return ROFF_IGN;
1.212 schwarze 3183:
3184: keysz = roff_getname(r, &val, ln, pos);
1.363 schwarze 3185: if (key[keysz] == '\\' || key[keysz] == '\t')
1.277 schwarze 3186: return ROFF_IGN;
1.89 kristaps 3187:
1.187 schwarze 3188: sign = *val;
1.238 schwarze 3189: if (sign == '+' || sign == '-')
1.187 schwarze 3190: val++;
3191:
1.327 schwarze 3192: len = 0;
3193: if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
3194: return ROFF_IGN;
3195:
3196: step = val + len;
3197: while (isspace((unsigned char)*step))
3198: step++;
3199: if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)
3200: is = INT_MIN;
1.109 kristaps 3201:
1.327 schwarze 3202: roff_setregn(r, key, keysz, iv, sign, is);
1.277 schwarze 3203: return ROFF_IGN;
1.203 schwarze 3204: }
3205:
1.340 schwarze 3206: static int
1.203 schwarze 3207: roff_rr(ROFF_ARGS)
3208: {
3209: struct roffreg *reg, **prev;
1.212 schwarze 3210: char *name, *cp;
3211: size_t namesz;
1.203 schwarze 3212:
1.238 schwarze 3213: name = cp = buf->buf + pos;
3214: if (*name == '\0')
1.277 schwarze 3215: return ROFF_IGN;
1.212 schwarze 3216: namesz = roff_getname(r, &cp, ln, pos);
3217: name[namesz] = '\0';
1.203 schwarze 3218:
3219: prev = &r->regtab;
3220: while (1) {
3221: reg = *prev;
1.238 schwarze 3222: if (reg == NULL || !strcmp(name, reg->key.p))
1.203 schwarze 3223: break;
3224: prev = ®->next;
3225: }
1.238 schwarze 3226: if (reg != NULL) {
1.203 schwarze 3227: *prev = reg->next;
3228: free(reg->key.p);
3229: free(reg);
3230: }
1.277 schwarze 3231: return ROFF_IGN;
1.122 schwarze 3232: }
3233:
1.266 schwarze 3234: /* --- handler functions for roff requests -------------------------------- */
3235:
1.340 schwarze 3236: static int
1.122 schwarze 3237: roff_rm(ROFF_ARGS)
3238: {
3239: const char *name;
3240: char *cp;
1.212 schwarze 3241: size_t namesz;
1.122 schwarze 3242:
1.238 schwarze 3243: cp = buf->buf + pos;
3244: while (*cp != '\0') {
1.212 schwarze 3245: name = cp;
1.238 schwarze 3246: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.212 schwarze 3247: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.311 schwarze 3248: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.363 schwarze 3249: if (name[namesz] == '\\' || name[namesz] == '\t')
1.212 schwarze 3250: break;
1.122 schwarze 3251: }
1.277 schwarze 3252: return ROFF_IGN;
1.178 schwarze 3253: }
3254:
1.340 schwarze 3255: static int
1.178 schwarze 3256: roff_it(ROFF_ARGS)
3257: {
3258: int iv;
3259:
3260: /* Parse the number of lines. */
1.261 schwarze 3261:
3262: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.350 schwarze 3263: mandoc_msg(MANDOCERR_IT_NONUM,
3264: ln, ppos, "%s", buf->buf + 1);
1.277 schwarze 3265: return ROFF_IGN;
1.178 schwarze 3266: }
3267:
1.262 schwarze 3268: while (isspace((unsigned char)buf->buf[pos]))
3269: pos++;
3270:
3271: /*
3272: * Arm the input line trap.
3273: * Special-casing "an-trap" is an ugly workaround to cope
3274: * with DocBook stupidly fiddling with man(7) internals.
3275: */
1.261 schwarze 3276:
1.178 schwarze 3277: roffit_lines = iv;
1.262 schwarze 3278: roffit_macro = mandoc_strdup(iv != 1 ||
3279: strcmp(buf->buf + pos, "an-trap") ?
3280: buf->buf + pos : "br");
1.277 schwarze 3281: return ROFF_IGN;
1.175 schwarze 3282: }
3283:
1.340 schwarze 3284: static int
1.175 schwarze 3285: roff_Dd(ROFF_ARGS)
3286: {
1.315 schwarze 3287: int mask;
3288: enum roff_tok t, te;
1.227 schwarze 3289:
1.315 schwarze 3290: switch (tok) {
3291: case ROFF_Dd:
3292: tok = MDOC_Dd;
3293: te = MDOC_MAX;
3294: if (r->format == 0)
3295: r->format = MPARSE_MDOC;
3296: mask = MPARSE_MDOC | MPARSE_QUICK;
3297: break;
3298: case ROFF_TH:
3299: tok = MAN_TH;
3300: te = MAN_MAX;
3301: if (r->format == 0)
3302: r->format = MPARSE_MAN;
3303: mask = MPARSE_QUICK;
3304: break;
3305: default:
3306: abort();
3307: }
3308: if ((r->options & mask) == 0)
3309: for (t = tok; t < te; t++)
3310: roff_setstr(r, roff_name[t], NULL, 0);
1.277 schwarze 3311: return ROFF_CONT;
1.109 kristaps 3312: }
3313:
1.340 schwarze 3314: static int
1.109 kristaps 3315: roff_TE(ROFF_ARGS)
3316: {
1.361 schwarze 3317: r->man->flags &= ~ROFF_NONOFILL;
1.321 schwarze 3318: if (r->tbl == NULL) {
1.350 schwarze 3319: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "TE");
1.321 schwarze 3320: return ROFF_IGN;
3321: }
1.346 schwarze 3322: if (tbl_end(r->tbl, 0) == 0) {
1.321 schwarze 3323: r->tbl = NULL;
1.258 schwarze 3324: free(buf->buf);
3325: buf->buf = mandoc_strdup(".sp");
3326: buf->sz = 4;
1.329 schwarze 3327: *offs = 0;
1.277 schwarze 3328: return ROFF_REPARSE;
1.258 schwarze 3329: }
1.321 schwarze 3330: r->tbl = NULL;
1.277 schwarze 3331: return ROFF_IGN;
1.112 kristaps 3332: }
3333:
1.340 schwarze 3334: static int
1.112 kristaps 3335: roff_T_(ROFF_ARGS)
3336: {
3337:
3338: if (NULL == r->tbl)
1.350 schwarze 3339: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "T&");
1.112 kristaps 3340: else
1.296 schwarze 3341: tbl_restart(ln, ppos, r->tbl);
1.112 kristaps 3342:
1.277 schwarze 3343: return ROFF_IGN;
1.109 kristaps 3344: }
3345:
1.230 schwarze 3346: /*
3347: * Handle in-line equation delimiters.
3348: */
1.340 schwarze 3349: static int
1.238 schwarze 3350: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.151 kristaps 3351: {
1.233 schwarze 3352: char *cp1, *cp2;
3353: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.151 kristaps 3354:
1.230 schwarze 3355: /*
3356: * Outside equations, look for an opening delimiter.
3357: * If we are inside an equation, we already know it is
3358: * in-line, or this function wouldn't have been called;
3359: * so look for a closing delimiter.
3360: */
3361:
1.238 schwarze 3362: cp1 = buf->buf + pos;
1.230 schwarze 3363: cp2 = strchr(cp1, r->eqn == NULL ?
3364: r->last_eqn->odelim : r->last_eqn->cdelim);
3365: if (cp2 == NULL)
1.277 schwarze 3366: return ROFF_CONT;
1.230 schwarze 3367:
1.233 schwarze 3368: *cp2++ = '\0';
3369: bef_pr = bef_nl = aft_nl = aft_pr = "";
3370:
3371: /* Handle preceding text, protecting whitespace. */
3372:
1.238 schwarze 3373: if (*buf->buf != '\0') {
1.233 schwarze 3374: if (r->eqn == NULL)
3375: bef_pr = "\\&";
3376: bef_nl = "\n";
3377: }
3378:
3379: /*
3380: * Prepare replacing the delimiter with an equation macro
3381: * and drop leading white space from the equation.
3382: */
1.230 schwarze 3383:
1.233 schwarze 3384: if (r->eqn == NULL) {
3385: while (*cp2 == ' ')
3386: cp2++;
3387: mac = ".EQ";
3388: } else
3389: mac = ".EN";
3390:
3391: /* Handle following text, protecting whitespace. */
3392:
3393: if (*cp2 != '\0') {
3394: aft_nl = "\n";
3395: if (r->eqn != NULL)
3396: aft_pr = "\\&";
3397: }
3398:
3399: /* Do the actual replacement. */
3400:
1.238 schwarze 3401: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.233 schwarze 3402: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.238 schwarze 3403: free(buf->buf);
3404: buf->buf = cp1;
1.230 schwarze 3405:
3406: /* Toggle the in-line state of the eqn subsystem. */
3407:
3408: r->eqn_inline = r->eqn == NULL;
1.277 schwarze 3409: return ROFF_REPARSE;
1.151 kristaps 3410: }
3411:
1.340 schwarze 3412: static int
1.235 schwarze 3413: roff_EQ(ROFF_ARGS)
1.125 kristaps 3414: {
1.319 schwarze 3415: struct roff_node *n;
3416:
1.356 schwarze 3417: if (r->man->meta.macroset == MACROSET_MAN)
1.322 schwarze 3418: man_breakscope(r->man, ROFF_EQ);
1.319 schwarze 3419: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
3420: if (ln > r->man->last->line)
3421: n->flags |= NODE_LINE;
1.348 schwarze 3422: n->eqn = eqn_box_new();
1.319 schwarze 3423: roff_node_append(r->man, n);
3424: r->man->next = ROFF_NEXT_SIBLING;
1.125 kristaps 3425:
1.238 schwarze 3426: assert(r->eqn == NULL);
1.319 schwarze 3427: if (r->last_eqn == NULL)
1.351 schwarze 3428: r->last_eqn = eqn_alloc();
1.319 schwarze 3429: else
3430: eqn_reset(r->last_eqn);
3431: r->eqn = r->last_eqn;
3432: r->eqn->node = n;
1.151 kristaps 3433:
1.238 schwarze 3434: if (buf->buf[pos] != '\0')
1.350 schwarze 3435: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.238 schwarze 3436: ".EQ %s", buf->buf + pos);
1.151 kristaps 3437:
1.277 schwarze 3438: return ROFF_IGN;
1.125 kristaps 3439: }
3440:
1.340 schwarze 3441: static int
1.125 kristaps 3442: roff_EN(ROFF_ARGS)
3443: {
1.319 schwarze 3444: if (r->eqn != NULL) {
3445: eqn_parse(r->eqn);
3446: r->eqn = NULL;
3447: } else
1.350 schwarze 3448: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "EN");
1.319 schwarze 3449: if (buf->buf[pos] != '\0')
1.350 schwarze 3450: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.319 schwarze 3451: "EN %s", buf->buf + pos);
1.277 schwarze 3452: return ROFF_IGN;
1.125 kristaps 3453: }
3454:
1.340 schwarze 3455: static int
1.109 kristaps 3456: roff_TS(ROFF_ARGS)
3457: {
1.321 schwarze 3458: if (r->tbl != NULL) {
1.350 schwarze 3459: mandoc_msg(MANDOCERR_BLK_BROKEN, ln, ppos, "TS breaks TS");
1.346 schwarze 3460: tbl_end(r->tbl, 0);
1.115 kristaps 3461: }
1.361 schwarze 3462: r->man->flags |= ROFF_NONOFILL;
1.351 schwarze 3463: r->tbl = tbl_alloc(ppos, ln, r->last_tbl);
1.346 schwarze 3464: if (r->last_tbl == NULL)
1.321 schwarze 3465: r->first_tbl = r->tbl;
3466: r->last_tbl = r->tbl;
1.297 schwarze 3467: return ROFF_IGN;
3468: }
3469:
1.340 schwarze 3470: static int
1.358 schwarze 3471: roff_noarg(ROFF_ARGS)
3472: {
3473: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3474: man_breakscope(r->man, tok);
3475: if (tok == ROFF_brp)
3476: tok = ROFF_br;
3477: roff_elem_alloc(r->man, ln, ppos, tok);
3478: if (buf->buf[pos] != '\0')
3479: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
3480: "%s %s", roff_name[tok], buf->buf + pos);
3481: if (tok == ROFF_nf)
3482: r->man->flags |= ROFF_NOFILL;
3483: else if (tok == ROFF_fi)
3484: r->man->flags &= ~ROFF_NOFILL;
3485: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3486: r->man->next = ROFF_NEXT_SIBLING;
3487: return ROFF_IGN;
3488: }
3489:
3490: static int
1.297 schwarze 3491: roff_onearg(ROFF_ARGS)
3492: {
3493: struct roff_node *n;
3494: char *cp;
1.305 schwarze 3495: int npos;
1.297 schwarze 3496:
1.302 schwarze 3497: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.320 schwarze 3498: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
3499: tok == ROFF_ti))
1.302 schwarze 3500: man_breakscope(r->man, tok);
3501:
1.309 schwarze 3502: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.305 schwarze 3503: r->man->last = roffce_node;
3504: r->man->next = ROFF_NEXT_SIBLING;
3505: }
3506:
1.297 schwarze 3507: roff_elem_alloc(r->man, ln, ppos, tok);
3508: n = r->man->last;
3509:
3510: cp = buf->buf + pos;
3511: if (*cp != '\0') {
3512: while (*cp != '\0' && *cp != ' ')
3513: cp++;
3514: while (*cp == ' ')
3515: *cp++ = '\0';
3516: if (*cp != '\0')
1.350 schwarze 3517: mandoc_msg(MANDOCERR_ARG_EXCESS,
3518: ln, (int)(cp - buf->buf),
1.297 schwarze 3519: "%s ... %s", roff_name[tok], cp);
3520: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.300 schwarze 3521: }
3522:
1.309 schwarze 3523: if (tok == ROFF_ce || tok == ROFF_rj) {
3524: if (r->man->last->type == ROFFT_ELEM) {
1.305 schwarze 3525: roff_word_alloc(r->man, ln, pos, "1");
3526: r->man->last->flags |= NODE_NOSRC;
3527: }
3528: npos = 0;
3529: if (roff_evalnum(r, ln, r->man->last->string, &npos,
3530: &roffce_lines, 0) == 0) {
1.350 schwarze 3531: mandoc_msg(MANDOCERR_CE_NONUM,
3532: ln, pos, "ce %s", buf->buf + pos);
1.305 schwarze 3533: roffce_lines = 1;
3534: }
3535: if (roffce_lines < 1) {
3536: r->man->last = r->man->last->parent;
3537: roffce_node = NULL;
3538: roffce_lines = 0;
3539: } else
3540: roffce_node = r->man->last->parent;
3541: } else {
3542: n->flags |= NODE_VALID | NODE_ENDED;
3543: r->man->last = n;
3544: }
3545: n->flags |= NODE_LINE;
1.300 schwarze 3546: r->man->next = ROFF_NEXT_SIBLING;
3547: return ROFF_IGN;
3548: }
3549:
1.340 schwarze 3550: static int
1.300 schwarze 3551: roff_manyarg(ROFF_ARGS)
3552: {
3553: struct roff_node *n;
3554: char *sp, *ep;
3555:
3556: roff_elem_alloc(r->man, ln, ppos, tok);
3557: n = r->man->last;
3558:
3559: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3560: while (*ep != '\0' && *ep != ' ')
3561: ep++;
3562: while (*ep == ' ')
3563: *ep++ = '\0';
3564: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.297 schwarze 3565: }
3566:
3567: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3568: r->man->last = n;
3569: r->man->next = ROFF_NEXT_SIBLING;
1.277 schwarze 3570: return ROFF_IGN;
1.251 schwarze 3571: }
3572:
1.340 schwarze 3573: static int
1.311 schwarze 3574: roff_als(ROFF_ARGS)
3575: {
3576: char *oldn, *newn, *end, *value;
3577: size_t oldsz, newsz, valsz;
3578:
3579: newn = oldn = buf->buf + pos;
3580: if (*newn == '\0')
3581: return ROFF_IGN;
3582:
3583: newsz = roff_getname(r, &oldn, ln, pos);
1.363 schwarze 3584: if (newn[newsz] == '\\' || newn[newsz] == '\t' || *oldn == '\0')
1.311 schwarze 3585: return ROFF_IGN;
3586:
3587: end = oldn;
3588: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3589: if (oldsz == 0)
3590: return ROFF_IGN;
3591:
1.338 schwarze 3592: valsz = mandoc_asprintf(&value, ".%.*s \\$@\\\"\n",
1.315 schwarze 3593: (int)oldsz, oldn);
1.311 schwarze 3594: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3595: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3596: free(value);
1.364 schwarze 3597: return ROFF_IGN;
3598: }
3599:
3600: /*
3601: * The .break request only makes sense inside conditionals,
3602: * and that case is already handled in roff_cond_sub().
3603: */
3604: static int
3605: roff_break(ROFF_ARGS)
3606: {
3607: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, pos, "break");
1.296 schwarze 3608: return ROFF_IGN;
1.92 schwarze 3609: }
3610:
1.340 schwarze 3611: static int
1.174 kristaps 3612: roff_cc(ROFF_ARGS)
3613: {
3614: const char *p;
3615:
1.238 schwarze 3616: p = buf->buf + pos;
1.174 kristaps 3617:
1.238 schwarze 3618: if (*p == '\0' || (r->control = *p++) == '.')
1.303 schwarze 3619: r->control = '\0';
1.174 kristaps 3620:
1.238 schwarze 3621: if (*p != '\0')
1.350 schwarze 3622: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.260 schwarze 3623: ln, p - buf->buf, "cc ... %s", p);
1.174 kristaps 3624:
1.341 schwarze 3625: return ROFF_IGN;
3626: }
3627:
3628: static int
3629: roff_char(ROFF_ARGS)
3630: {
3631: const char *p, *kp, *vp;
3632: size_t ksz, vsz;
3633: int font;
3634:
3635: /* Parse the character to be replaced. */
3636:
3637: kp = buf->buf + pos;
3638: p = kp + 1;
3639: if (*kp == '\0' || (*kp == '\\' &&
3640: mandoc_escape(&p, NULL, NULL) != ESCAPE_SPECIAL) ||
3641: (*p != ' ' && *p != '\0')) {
1.350 schwarze 3642: mandoc_msg(MANDOCERR_CHAR_ARG, ln, pos, "char %s", kp);
1.341 schwarze 3643: return ROFF_IGN;
3644: }
3645: ksz = p - kp;
3646: while (*p == ' ')
3647: p++;
3648:
3649: /*
3650: * If the replacement string contains a font escape sequence,
3651: * we have to restore the font at the end.
3652: */
3653:
3654: vp = p;
3655: vsz = strlen(p);
3656: font = 0;
3657: while (*p != '\0') {
3658: if (*p++ != '\\')
3659: continue;
3660: switch (mandoc_escape(&p, NULL, NULL)) {
3661: case ESCAPE_FONT:
3662: case ESCAPE_FONTROMAN:
3663: case ESCAPE_FONTITALIC:
3664: case ESCAPE_FONTBOLD:
3665: case ESCAPE_FONTBI:
1.378 schwarze 3666: case ESCAPE_FONTCR:
3667: case ESCAPE_FONTCB:
3668: case ESCAPE_FONTCI:
1.341 schwarze 3669: case ESCAPE_FONTPREV:
3670: font++;
3671: break;
3672: default:
3673: break;
3674: }
3675: }
3676: if (font > 1)
1.350 schwarze 3677: mandoc_msg(MANDOCERR_CHAR_FONT,
3678: ln, (int)(vp - buf->buf), "%s", vp);
1.341 schwarze 3679:
3680: /*
3681: * Approximate the effect of .char using the .tr tables.
3682: * XXX In groff, .char and .tr interact differently.
3683: */
3684:
3685: if (ksz == 1) {
3686: if (r->xtab == NULL)
3687: r->xtab = mandoc_calloc(128, sizeof(*r->xtab));
3688: assert((unsigned int)*kp < 128);
3689: free(r->xtab[(int)*kp].p);
3690: r->xtab[(int)*kp].sz = mandoc_asprintf(&r->xtab[(int)*kp].p,
3691: "%s%s", vp, font ? "\fP" : "");
3692: } else {
3693: roff_setstrn(&r->xmbtab, kp, ksz, vp, vsz, 0);
3694: if (font)
3695: roff_setstrn(&r->xmbtab, kp, ksz, "\\fP", 3, 1);
3696: }
1.277 schwarze 3697: return ROFF_IGN;
1.174 kristaps 3698: }
3699:
1.340 schwarze 3700: static int
1.303 schwarze 3701: roff_ec(ROFF_ARGS)
3702: {
3703: const char *p;
3704:
3705: p = buf->buf + pos;
3706: if (*p == '\0')
3707: r->escape = '\\';
3708: else {
3709: r->escape = *p;
3710: if (*++p != '\0')
1.350 schwarze 3711: mandoc_msg(MANDOCERR_ARG_EXCESS, ln,
3712: (int)(p - buf->buf), "ec ... %s", p);
1.303 schwarze 3713: }
3714: return ROFF_IGN;
3715: }
3716:
1.340 schwarze 3717: static int
1.303 schwarze 3718: roff_eo(ROFF_ARGS)
3719: {
3720: r->escape = '\0';
3721: if (buf->buf[pos] != '\0')
1.350 schwarze 3722: mandoc_msg(MANDOCERR_ARG_SKIP,
1.303 schwarze 3723: ln, pos, "eo %s", buf->buf + pos);
1.384 schwarze 3724: return ROFF_IGN;
3725: }
3726:
3727: static int
3728: roff_mc(ROFF_ARGS)
3729: {
3730: struct roff_node *n;
3731: char *cp;
3732:
3733: /* Parse the first argument. */
3734:
3735: cp = buf->buf + pos;
3736: if (*cp != '\0')
3737: cp++;
3738: if (buf->buf[pos] == '\\') {
3739: switch (mandoc_escape((const char **)&cp, NULL, NULL)) {
3740: case ESCAPE_SPECIAL:
3741: case ESCAPE_UNICODE:
3742: case ESCAPE_NUMBERED:
3743: break;
3744: default:
3745: *cp = '\0';
3746: mandoc_msg(MANDOCERR_MC_ESC, ln, pos,
3747: "mc %s", buf->buf + pos);
3748: buf->buf[pos] = '\0';
3749: break;
3750: }
3751: }
3752:
3753: /* Ignore additional arguments. */
3754:
3755: while (*cp == ' ')
3756: *cp++ = '\0';
3757: if (*cp != '\0') {
3758: mandoc_msg(MANDOCERR_MC_DIST, ln, (int)(cp - buf->buf),
3759: "mc ... %s", cp);
3760: *cp = '\0';
3761: }
3762:
3763: /* Create the .mc node. */
3764:
3765: roff_elem_alloc(r->man, ln, ppos, tok);
3766: n = r->man->last;
3767: if (buf->buf[pos] != '\0')
3768: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
3769: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3770: r->man->last = n;
3771: r->man->next = ROFF_NEXT_SIBLING;
1.303 schwarze 3772: return ROFF_IGN;
1.330 schwarze 3773: }
3774:
1.340 schwarze 3775: static int
1.330 schwarze 3776: roff_nop(ROFF_ARGS)
3777: {
3778: while (buf->buf[pos] == ' ')
3779: pos++;
3780: *offs = pos;
3781: return ROFF_RERUN;
1.303 schwarze 3782: }
3783:
1.340 schwarze 3784: static int
1.164 kristaps 3785: roff_tr(ROFF_ARGS)
3786: {
3787: const char *p, *first, *second;
3788: size_t fsz, ssz;
3789: enum mandoc_esc esc;
3790:
1.238 schwarze 3791: p = buf->buf + pos;
1.164 kristaps 3792:
1.238 schwarze 3793: if (*p == '\0') {
1.350 schwarze 3794: mandoc_msg(MANDOCERR_REQ_EMPTY, ln, ppos, "tr");
1.277 schwarze 3795: return ROFF_IGN;
1.164 kristaps 3796: }
3797:
1.238 schwarze 3798: while (*p != '\0') {
1.164 kristaps 3799: fsz = ssz = 1;
3800:
3801: first = p++;
1.238 schwarze 3802: if (*first == '\\') {
1.164 kristaps 3803: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3804: if (esc == ESCAPE_ERROR) {
1.350 schwarze 3805: mandoc_msg(MANDOCERR_ESC_BAD, ln,
3806: (int)(p - buf->buf), "%s", first);
1.277 schwarze 3807: return ROFF_IGN;
1.164 kristaps 3808: }
3809: fsz = (size_t)(p - first);
3810: }
3811:
3812: second = p++;
1.238 schwarze 3813: if (*second == '\\') {
1.164 kristaps 3814: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3815: if (esc == ESCAPE_ERROR) {
1.350 schwarze 3816: mandoc_msg(MANDOCERR_ESC_BAD, ln,
3817: (int)(p - buf->buf), "%s", second);
1.277 schwarze 3818: return ROFF_IGN;
1.164 kristaps 3819: }
3820: ssz = (size_t)(p - second);
1.238 schwarze 3821: } else if (*second == '\0') {
1.350 schwarze 3822: mandoc_msg(MANDOCERR_TR_ODD, ln,
3823: (int)(first - buf->buf), "tr %s", first);
1.164 kristaps 3824: second = " ";
1.165 kristaps 3825: p--;
1.164 kristaps 3826: }
3827:
1.167 kristaps 3828: if (fsz > 1) {
1.207 schwarze 3829: roff_setstrn(&r->xmbtab, first, fsz,
3830: second, ssz, 0);
1.167 kristaps 3831: continue;
3832: }
3833:
1.238 schwarze 3834: if (r->xtab == NULL)
1.207 schwarze 3835: r->xtab = mandoc_calloc(128,
3836: sizeof(struct roffstr));
1.167 kristaps 3837:
3838: free(r->xtab[(int)*first].p);
3839: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3840: r->xtab[(int)*first].sz = ssz;
1.164 kristaps 3841: }
3842:
1.277 schwarze 3843: return ROFF_IGN;
1.164 kristaps 3844: }
3845:
1.339 schwarze 3846: /*
3847: * Implementation of the .return request.
3848: * There is no need to call roff_userret() from here.
3849: * The read module will call that after rewinding the reader stack
3850: * to the place from where the current macro was called.
3851: */
1.340 schwarze 3852: static int
1.339 schwarze 3853: roff_return(ROFF_ARGS)
3854: {
3855: if (r->mstackpos >= 0)
1.340 schwarze 3856: return ROFF_IGN | ROFF_USERRET;
1.339 schwarze 3857:
1.350 schwarze 3858: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "return");
1.339 schwarze 3859: return ROFF_IGN;
3860: }
3861:
1.340 schwarze 3862: static int
1.306 schwarze 3863: roff_rn(ROFF_ARGS)
3864: {
3865: const char *value;
3866: char *oldn, *newn, *end;
3867: size_t oldsz, newsz;
1.315 schwarze 3868: int deftype;
1.306 schwarze 3869:
3870: oldn = newn = buf->buf + pos;
3871: if (*oldn == '\0')
3872: return ROFF_IGN;
3873:
3874: oldsz = roff_getname(r, &newn, ln, pos);
1.363 schwarze 3875: if (oldn[oldsz] == '\\' || oldn[oldsz] == '\t' || *newn == '\0')
1.306 schwarze 3876: return ROFF_IGN;
3877:
3878: end = newn;
3879: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3880: if (newsz == 0)
3881: return ROFF_IGN;
3882:
1.315 schwarze 3883: deftype = ROFFDEF_ANY;
3884: value = roff_getstrn(r, oldn, oldsz, &deftype);
3885: switch (deftype) {
3886: case ROFFDEF_USER:
1.306 schwarze 3887: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3888: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3889: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.315 schwarze 3890: break;
3891: case ROFFDEF_PRE:
3892: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3893: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3894: break;
3895: case ROFFDEF_REN:
1.306 schwarze 3896: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3897: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.315 schwarze 3898: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3899: break;
3900: case ROFFDEF_STD:
1.306 schwarze 3901: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.315 schwarze 3902: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3903: break;
3904: default:
3905: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3906: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3907: break;
3908: }
1.306 schwarze 3909: return ROFF_IGN;
3910: }
3911:
1.340 schwarze 3912: static int
1.339 schwarze 3913: roff_shift(ROFF_ARGS)
3914: {
3915: struct mctx *ctx;
1.382 schwarze 3916: int argpos, levels, i;
1.339 schwarze 3917:
1.382 schwarze 3918: argpos = pos;
1.339 schwarze 3919: levels = 1;
3920: if (buf->buf[pos] != '\0' &&
3921: roff_evalnum(r, ln, buf->buf, &pos, &levels, 0) == 0) {
1.350 schwarze 3922: mandoc_msg(MANDOCERR_CE_NONUM,
1.339 schwarze 3923: ln, pos, "shift %s", buf->buf + pos);
3924: levels = 1;
3925: }
3926: if (r->mstackpos < 0) {
1.350 schwarze 3927: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "shift");
1.339 schwarze 3928: return ROFF_IGN;
3929: }
3930: ctx = r->mstack + r->mstackpos;
3931: if (levels > ctx->argc) {
1.350 schwarze 3932: mandoc_msg(MANDOCERR_SHIFT,
1.382 schwarze 3933: ln, argpos, "%d, but max is %d", levels, ctx->argc);
1.339 schwarze 3934: levels = ctx->argc;
1.382 schwarze 3935: }
3936: if (levels < 0) {
3937: mandoc_msg(MANDOCERR_ARG_NEG, ln, argpos, "shift %d", levels);
3938: levels = 0;
1.339 schwarze 3939: }
3940: if (levels == 0)
3941: return ROFF_IGN;
3942: for (i = 0; i < levels; i++)
3943: free(ctx->argv[i]);
3944: ctx->argc -= levels;
3945: for (i = 0; i < ctx->argc; i++)
3946: ctx->argv[i] = ctx->argv[i + levels];
3947: return ROFF_IGN;
3948: }
3949:
1.340 schwarze 3950: static int
1.105 kristaps 3951: roff_so(ROFF_ARGS)
3952: {
1.249 schwarze 3953: char *name, *cp;
1.105 kristaps 3954:
1.238 schwarze 3955: name = buf->buf + pos;
1.350 schwarze 3956: mandoc_msg(MANDOCERR_SO, ln, ppos, "so %s", name);
1.105 kristaps 3957:
3958: /*
3959: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3960: * opening anything that's not in our cwd or anything beneath
3961: * it. Thus, explicitly disallow traversing up the file-system
3962: * or using absolute paths.
3963: */
3964:
1.238 schwarze 3965: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.350 schwarze 3966: mandoc_msg(MANDOCERR_SO_PATH, ln, ppos, ".so %s", name);
1.249 schwarze 3967: buf->sz = mandoc_asprintf(&cp,
3968: ".sp\nSee the file %s.\n.sp", name) + 1;
3969: free(buf->buf);
3970: buf->buf = cp;
3971: *offs = 0;
1.277 schwarze 3972: return ROFF_REPARSE;
1.105 kristaps 3973: }
3974:
3975: *offs = pos;
1.277 schwarze 3976: return ROFF_SO;
1.105 kristaps 3977: }
1.92 schwarze 3978:
1.266 schwarze 3979: /* --- user defined strings and macros ------------------------------------ */
3980:
1.340 schwarze 3981: static int
1.106 kristaps 3982: roff_userdef(ROFF_ARGS)
1.99 kristaps 3983: {
1.339 schwarze 3984: struct mctx *ctx;
3985: char *arg, *ap, *dst, *src;
3986: size_t sz;
3987:
1.365 schwarze 3988: /* If the macro is empty, ignore it altogether. */
3989:
3990: if (*r->current_string == '\0')
3991: return ROFF_IGN;
3992:
1.339 schwarze 3993: /* Initialize a new macro stack context. */
3994:
3995: if (++r->mstackpos == r->mstacksz) {
3996: r->mstack = mandoc_recallocarray(r->mstack,
3997: r->mstacksz, r->mstacksz + 8, sizeof(*r->mstack));
3998: r->mstacksz += 8;
3999: }
4000: ctx = r->mstack + r->mstackpos;
4001: ctx->argc = 0;
4002:
4003: /*
4004: * Collect pointers to macro argument strings,
4005: * NUL-terminating them and escaping quotes.
4006: */
4007:
4008: src = buf->buf + pos;
4009: while (*src != '\0') {
4010: if (ctx->argc == ctx->argsz) {
4011: ctx->argsz += 8;
4012: ctx->argv = mandoc_reallocarray(ctx->argv,
4013: ctx->argsz, sizeof(*ctx->argv));
4014: }
1.355 schwarze 4015: arg = roff_getarg(r, &src, ln, &pos);
1.339 schwarze 4016: sz = 1; /* For the terminating NUL. */
4017: for (ap = arg; *ap != '\0'; ap++)
4018: sz += *ap == '"' ? 4 : 1;
4019: ctx->argv[ctx->argc++] = dst = mandoc_malloc(sz);
4020: for (ap = arg; *ap != '\0'; ap++) {
4021: if (*ap == '"') {
4022: memcpy(dst, "\\(dq", 4);
4023: dst += 4;
4024: } else
4025: *dst++ = *ap;
1.106 kristaps 4026: }
1.339 schwarze 4027: *dst = '\0';
1.355 schwarze 4028: free(arg);
1.337 schwarze 4029: }
4030:
1.339 schwarze 4031: /* Replace the macro invocation by the macro definition. */
1.263 schwarze 4032:
1.238 schwarze 4033: free(buf->buf);
1.339 schwarze 4034: buf->buf = mandoc_strdup(r->current_string);
4035: buf->sz = strlen(buf->buf) + 1;
1.248 schwarze 4036: *offs = 0;
1.106 kristaps 4037:
1.365 schwarze 4038: return buf->buf[buf->sz - 2] == '\n' ?
1.340 schwarze 4039: ROFF_REPARSE | ROFF_USERCALL : ROFF_IGN | ROFF_APPEND;
1.99 kristaps 4040: }
1.121 schwarze 4041:
1.306 schwarze 4042: /*
4043: * Calling a high-level macro that was renamed with .rn.
4044: * r->current_string has already been set up by roff_parse().
4045: */
1.340 schwarze 4046: static int
1.306 schwarze 4047: roff_renamed(ROFF_ARGS)
4048: {
4049: char *nbuf;
4050:
1.315 schwarze 4051: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
4052: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.306 schwarze 4053: free(buf->buf);
4054: buf->buf = nbuf;
1.329 schwarze 4055: *offs = 0;
1.306 schwarze 4056: return ROFF_CONT;
4057: }
4058:
1.362 schwarze 4059: /*
4060: * Measure the length in bytes of the roff identifier at *cpp
4061: * and advance the pointer to the next word.
4062: */
1.212 schwarze 4063: static size_t
1.121 schwarze 4064: roff_getname(struct roff *r, char **cpp, int ln, int pos)
4065: {
4066: char *name, *cp;
1.212 schwarze 4067: size_t namesz;
1.121 schwarze 4068:
4069: name = *cpp;
1.362 schwarze 4070: if (*name == '\0')
1.277 schwarze 4071: return 0;
1.121 schwarze 4072:
1.362 schwarze 4073: /* Advance cp to the byte after the end of the name. */
4074:
1.212 schwarze 4075: for (cp = name; 1; cp++) {
1.362 schwarze 4076: namesz = cp - name;
1.363 schwarze 4077: if (*cp == '\0')
1.212 schwarze 4078: break;
1.363 schwarze 4079: if (*cp == ' ' || *cp == '\t') {
4080: cp++;
4081: break;
4082: }
1.362 schwarze 4083: if (*cp != '\\')
1.121 schwarze 4084: continue;
1.362 schwarze 4085: if (cp[1] == '{' || cp[1] == '}')
1.215 schwarze 4086: break;
1.362 schwarze 4087: if (*++cp == '\\')
1.121 schwarze 4088: continue;
1.350 schwarze 4089: mandoc_msg(MANDOCERR_NAMESC, ln, pos,
1.224 schwarze 4090: "%.*s", (int)(cp - name + 1), name);
1.212 schwarze 4091: mandoc_escape((const char **)&cp, NULL, NULL);
4092: break;
1.121 schwarze 4093: }
4094:
4095: /* Read past spaces. */
1.362 schwarze 4096:
4097: while (*cp == ' ')
1.121 schwarze 4098: cp++;
4099:
4100: *cpp = cp;
1.277 schwarze 4101: return namesz;
1.121 schwarze 4102: }
4103:
1.106 kristaps 4104: /*
4105: * Store *string into the user-defined string called *name.
4106: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.193 schwarze 4107: * append == 0: replace mode
4108: * append == 1: single-line append mode
4109: * append == 2: multiline append mode, append '\n' after each call
1.106 kristaps 4110: */
1.94 kristaps 4111: static void
1.106 kristaps 4112: roff_setstr(struct roff *r, const char *name, const char *string,
1.193 schwarze 4113: int append)
1.92 schwarze 4114: {
1.315 schwarze 4115: size_t namesz;
1.164 kristaps 4116:
1.315 schwarze 4117: namesz = strlen(name);
4118: roff_setstrn(&r->strtab, name, namesz, string,
1.207 schwarze 4119: string ? strlen(string) : 0, append);
1.315 schwarze 4120: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.164 kristaps 4121: }
4122:
4123: static void
1.166 kristaps 4124: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.193 schwarze 4125: const char *string, size_t stringsz, int append)
1.164 kristaps 4126: {
1.166 kristaps 4127: struct roffkv *n;
1.164 kristaps 4128: char *c;
4129: int i;
4130: size_t oldch, newch;
1.92 schwarze 4131:
1.106 kristaps 4132: /* Search for an existing string with the same name. */
1.164 kristaps 4133: n = *r;
4134:
1.211 schwarze 4135: while (n && (namesz != n->key.sz ||
4136: strncmp(n->key.p, name, namesz)))
1.92 schwarze 4137: n = n->next;
1.94 kristaps 4138:
4139: if (NULL == n) {
1.106 kristaps 4140: /* Create a new string table entry. */
1.166 kristaps 4141: n = mandoc_malloc(sizeof(struct roffkv));
4142: n->key.p = mandoc_strndup(name, namesz);
4143: n->key.sz = namesz;
4144: n->val.p = NULL;
4145: n->val.sz = 0;
1.164 kristaps 4146: n->next = *r;
4147: *r = n;
1.193 schwarze 4148: } else if (0 == append) {
1.166 kristaps 4149: free(n->val.p);
4150: n->val.p = NULL;
4151: n->val.sz = 0;
1.106 kristaps 4152: }
4153:
4154: if (NULL == string)
4155: return;
4156:
4157: /*
4158: * One additional byte for the '\n' in multiline mode,
4159: * and one for the terminating '\0'.
4160: */
1.193 schwarze 4161: newch = stringsz + (1 < append ? 2u : 1u);
1.164 kristaps 4162:
1.166 kristaps 4163: if (NULL == n->val.p) {
4164: n->val.p = mandoc_malloc(newch);
4165: *n->val.p = '\0';
1.106 kristaps 4166: oldch = 0;
4167: } else {
1.166 kristaps 4168: oldch = n->val.sz;
4169: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.106 kristaps 4170: }
4171:
4172: /* Skip existing content in the destination buffer. */
1.166 kristaps 4173: c = n->val.p + (int)oldch;
1.106 kristaps 4174:
4175: /* Append new content to the destination buffer. */
1.164 kristaps 4176: i = 0;
4177: while (i < (int)stringsz) {
1.106 kristaps 4178: /*
4179: * Rudimentary roff copy mode:
4180: * Handle escaped backslashes.
4181: */
1.164 kristaps 4182: if ('\\' == string[i] && '\\' == string[i + 1])
4183: i++;
4184: *c++ = string[i++];
1.106 kristaps 4185: }
1.94 kristaps 4186:
1.106 kristaps 4187: /* Append terminating bytes. */
1.193 schwarze 4188: if (1 < append)
1.106 kristaps 4189: *c++ = '\n';
1.163 kristaps 4190:
1.106 kristaps 4191: *c = '\0';
1.166 kristaps 4192: n->val.sz = (int)(c - n->val.p);
1.92 schwarze 4193: }
4194:
1.94 kristaps 4195: static const char *
1.325 schwarze 4196: roff_getstrn(struct roff *r, const char *name, size_t len,
1.315 schwarze 4197: int *deftype)
1.92 schwarze 4198: {
1.315 schwarze 4199: const struct roffkv *n;
1.325 schwarze 4200: int found, i;
1.315 schwarze 4201: enum roff_tok tok;
4202:
1.325 schwarze 4203: found = 0;
4204: for (n = r->strtab; n != NULL; n = n->next) {
4205: if (strncmp(name, n->key.p, len) != 0 ||
4206: n->key.p[len] != '\0' || n->val.p == NULL)
4207: continue;
4208: if (*deftype & ROFFDEF_USER) {
4209: *deftype = ROFFDEF_USER;
4210: return n->val.p;
4211: } else {
4212: found = 1;
4213: break;
4214: }
4215: }
4216: for (n = r->rentab; n != NULL; n = n->next) {
4217: if (strncmp(name, n->key.p, len) != 0 ||
4218: n->key.p[len] != '\0' || n->val.p == NULL)
4219: continue;
4220: if (*deftype & ROFFDEF_REN) {
4221: *deftype = ROFFDEF_REN;
4222: return n->val.p;
4223: } else {
4224: found = 1;
4225: break;
1.315 schwarze 4226: }
4227: }
1.325 schwarze 4228: for (i = 0; i < PREDEFS_MAX; i++) {
4229: if (strncmp(name, predefs[i].name, len) != 0 ||
4230: predefs[i].name[len] != '\0')
4231: continue;
4232: if (*deftype & ROFFDEF_PRE) {
4233: *deftype = ROFFDEF_PRE;
4234: return predefs[i].str;
4235: } else {
4236: found = 1;
4237: break;
1.315 schwarze 4238: }
4239: }
1.356 schwarze 4240: if (r->man->meta.macroset != MACROSET_MAN) {
1.325 schwarze 4241: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
4242: if (strncmp(name, roff_name[tok], len) != 0 ||
4243: roff_name[tok][len] != '\0')
4244: continue;
4245: if (*deftype & ROFFDEF_STD) {
4246: *deftype = ROFFDEF_STD;
4247: return NULL;
4248: } else {
4249: found = 1;
4250: break;
1.315 schwarze 4251: }
4252: }
4253: }
1.356 schwarze 4254: if (r->man->meta.macroset != MACROSET_MDOC) {
1.325 schwarze 4255: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
4256: if (strncmp(name, roff_name[tok], len) != 0 ||
4257: roff_name[tok][len] != '\0')
4258: continue;
4259: if (*deftype & ROFFDEF_STD) {
4260: *deftype = ROFFDEF_STD;
4261: return NULL;
4262: } else {
4263: found = 1;
4264: break;
1.315 schwarze 4265: }
4266: }
1.325 schwarze 4267: }
4268:
4269: if (found == 0 && *deftype != ROFFDEF_ANY) {
4270: if (*deftype & ROFFDEF_REN) {
4271: /*
4272: * This might still be a request,
4273: * so do not treat it as undefined yet.
4274: */
4275: *deftype = ROFFDEF_UNDEF;
4276: return NULL;
1.315 schwarze 4277: }
1.325 schwarze 4278:
4279: /* Using an undefined string defines it to be empty. */
4280:
4281: roff_setstrn(&r->strtab, name, len, "", 0, 0);
4282: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.315 schwarze 4283: }
1.325 schwarze 4284:
1.315 schwarze 4285: *deftype = 0;
1.277 schwarze 4286: return NULL;
1.92 schwarze 4287: }
4288:
1.94 kristaps 4289: static void
1.167 kristaps 4290: roff_freestr(struct roffkv *r)
1.92 schwarze 4291: {
1.166 kristaps 4292: struct roffkv *n, *nn;
1.92 schwarze 4293:
1.167 kristaps 4294: for (n = r; n; n = nn) {
1.166 kristaps 4295: free(n->key.p);
4296: free(n->val.p);
1.92 schwarze 4297: nn = n->next;
4298: free(n);
4299: }
1.114 kristaps 4300: }
1.266 schwarze 4301:
4302: /* --- accessors and utility functions ------------------------------------ */
1.164 kristaps 4303:
4304: /*
4305: * Duplicate an input string, making the appropriate character
4306: * conversations (as stipulated by `tr') along the way.
4307: * Returns a heap-allocated string with all the replacements made.
4308: */
4309: char *
4310: roff_strdup(const struct roff *r, const char *p)
4311: {
1.166 kristaps 4312: const struct roffkv *cp;
1.164 kristaps 4313: char *res;
4314: const char *pp;
4315: size_t ssz, sz;
4316: enum mandoc_esc esc;
4317:
1.167 kristaps 4318: if (NULL == r->xmbtab && NULL == r->xtab)
1.277 schwarze 4319: return mandoc_strdup(p);
1.164 kristaps 4320: else if ('\0' == *p)
1.277 schwarze 4321: return mandoc_strdup("");
1.164 kristaps 4322:
4323: /*
4324: * Step through each character looking for term matches
4325: * (remember that a `tr' can be invoked with an escape, which is
4326: * a glyph but the escape is multi-character).
4327: * We only do this if the character hash has been initialised
4328: * and the string is >0 length.
4329: */
4330:
4331: res = NULL;
4332: ssz = 0;
4333:
4334: while ('\0' != *p) {
1.289 schwarze 4335: assert((unsigned int)*p < 128);
4336: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.167 kristaps 4337: sz = r->xtab[(int)*p].sz;
4338: res = mandoc_realloc(res, ssz + sz + 1);
4339: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
4340: ssz += sz;
4341: p++;
4342: continue;
4343: } else if ('\\' != *p) {
4344: res = mandoc_realloc(res, ssz + 2);
4345: res[ssz++] = *p++;
4346: continue;
4347: }
4348:
1.164 kristaps 4349: /* Search for term matches. */
1.167 kristaps 4350: for (cp = r->xmbtab; cp; cp = cp->next)
1.166 kristaps 4351: if (0 == strncmp(p, cp->key.p, cp->key.sz))
1.164 kristaps 4352: break;
4353:
4354: if (NULL != cp) {
4355: /*
4356: * A match has been found.
4357: * Append the match to the array and move
4358: * forward by its keysize.
4359: */
1.207 schwarze 4360: res = mandoc_realloc(res,
4361: ssz + cp->val.sz + 1);
1.166 kristaps 4362: memcpy(res + ssz, cp->val.p, cp->val.sz);
4363: ssz += cp->val.sz;
4364: p += (int)cp->key.sz;
1.164 kristaps 4365: continue;
4366: }
4367:
1.167 kristaps 4368: /*
4369: * Handle escapes carefully: we need to copy
4370: * over just the escape itself, or else we might
4371: * do replacements within the escape itself.
4372: * Make sure to pass along the bogus string.
4373: */
4374: pp = p++;
4375: esc = mandoc_escape(&p, NULL, NULL);
4376: if (ESCAPE_ERROR == esc) {
4377: sz = strlen(pp);
1.164 kristaps 4378: res = mandoc_realloc(res, ssz + sz + 1);
4379: memcpy(res + ssz, pp, sz);
1.167 kristaps 4380: break;
1.164 kristaps 4381: }
1.207 schwarze 4382: /*
4383: * We bail out on bad escapes.
1.167 kristaps 4384: * No need to warn: we already did so when
1.355 schwarze 4385: * roff_expand() was called.
1.167 kristaps 4386: */
4387: sz = (int)(p - pp);
4388: res = mandoc_realloc(res, ssz + sz + 1);
4389: memcpy(res + ssz, pp, sz);
4390: ssz += sz;
1.164 kristaps 4391: }
4392:
4393: res[(int)ssz] = '\0';
1.277 schwarze 4394: return res;
1.227 schwarze 4395: }
4396:
4397: int
4398: roff_getformat(const struct roff *r)
4399: {
4400:
1.277 schwarze 4401: return r->format;
1.174 kristaps 4402: }
4403:
4404: /*
1.207 schwarze 4405: * Find out whether a line is a macro line or not.
1.174 kristaps 4406: * If it is, adjust the current position and return one; if it isn't,
4407: * return zero and don't change the current position.
4408: * If the control character has been set with `.cc', then let that grain
4409: * precedence.
4410: * This is slighly contrary to groff, where using the non-breaking
4411: * control character when `cc' has been invoked will cause the
4412: * non-breaking macro contents to be printed verbatim.
4413: */
4414: int
4415: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
4416: {
4417: int pos;
4418:
4419: pos = *ppos;
4420:
1.303 schwarze 4421: if (r->control != '\0' && cp[pos] == r->control)
1.174 kristaps 4422: pos++;
1.303 schwarze 4423: else if (r->control != '\0')
1.277 schwarze 4424: return 0;
1.174 kristaps 4425: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
4426: pos += 2;
4427: else if ('.' == cp[pos] || '\'' == cp[pos])
4428: pos++;
4429: else
1.277 schwarze 4430: return 0;
1.174 kristaps 4431:
4432: while (' ' == cp[pos] || '\t' == cp[pos])
4433: pos++;
4434:
4435: *ppos = pos;
1.277 schwarze 4436: return 1;
1.74 kristaps 4437: }
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