Annotation of mandoc/roff.c, Revision 1.398
1.398 ! schwarze 1: /* $Id: roff.c,v 1.397 2023/10/21 17:10:18 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:
1.170 schwarze 43: /* Maximum number of string expansions per line, to break infinite loops. */
44: #define EXPAND_LIMIT 1000
45:
1.315 schwarze 46: /* Types of definitions of macros and strings. */
47: #define ROFFDEF_USER (1 << 1) /* User-defined. */
48: #define ROFFDEF_PRE (1 << 2) /* Predefined. */
49: #define ROFFDEF_REN (1 << 3) /* Renamed standard macro. */
50: #define ROFFDEF_STD (1 << 4) /* mdoc(7) or man(7) macro. */
51: #define ROFFDEF_ANY (ROFFDEF_USER | ROFFDEF_PRE | \
52: ROFFDEF_REN | ROFFDEF_STD)
1.325 schwarze 53: #define ROFFDEF_UNDEF (1 << 5) /* Completely undefined. */
1.315 schwarze 54:
1.266 schwarze 55: /* --- data types --------------------------------------------------------- */
56:
1.147 kristaps 57: /*
1.167 kristaps 58: * An incredibly-simple string buffer.
59: */
1.94 kristaps 60: struct roffstr {
1.167 kristaps 61: char *p; /* nil-terminated buffer */
62: size_t sz; /* saved strlen(p) */
1.166 kristaps 63: };
64:
65: /*
1.167 kristaps 66: * A key-value roffstr pair as part of a singly-linked list.
1.166 kristaps 67: */
68: struct roffkv {
69: struct roffstr key;
70: struct roffstr val;
71: struct roffkv *next; /* next in list */
1.94 kristaps 72: };
73:
1.180 schwarze 74: /*
75: * A single number register as part of a singly-linked list.
76: */
77: struct roffreg {
78: struct roffstr key;
1.181 schwarze 79: int val;
1.327 schwarze 80: int step;
1.180 schwarze 81: struct roffreg *next;
82: };
83:
1.295 schwarze 84: /*
85: * Association of request and macro names with token IDs.
86: */
87: struct roffreq {
88: enum roff_tok tok;
89: char name[];
90: };
91:
1.339 schwarze 92: /*
93: * A macro processing context.
94: * More than one is needed when macro calls are nested.
95: */
96: struct mctx {
97: char **argv;
98: int argc;
99: int argsz;
100: };
101:
1.67 kristaps 102: struct roff {
1.296 schwarze 103: struct roff_man *man; /* mdoc or man parser */
1.67 kristaps 104: struct roffnode *last; /* leaf of stack */
1.339 schwarze 105: struct mctx *mstack; /* stack of macro contexts */
1.223 schwarze 106: int *rstack; /* stack of inverted `ie' values */
1.295 schwarze 107: struct ohash *reqtab; /* request lookup table */
1.180 schwarze 108: struct roffreg *regtab; /* number registers */
1.166 kristaps 109: struct roffkv *strtab; /* user-defined strings & macros */
1.306 schwarze 110: struct roffkv *rentab; /* renamed strings & macros */
1.167 kristaps 111: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
112: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.106 kristaps 113: const char *current_string; /* value of last called user macro */
1.118 kristaps 114: struct tbl_node *first_tbl; /* first table parsed */
115: struct tbl_node *last_tbl; /* last table parsed */
116: struct tbl_node *tbl; /* current table being parsed */
1.319 schwarze 117: struct eqn_node *last_eqn; /* equation parser */
118: struct eqn_node *eqn; /* active equation parser */
1.230 schwarze 119: int eqn_inline; /* current equation is inline */
1.223 schwarze 120: int options; /* parse options */
1.339 schwarze 121: int mstacksz; /* current size of mstack */
122: int mstackpos; /* position in mstack */
1.223 schwarze 123: int rstacksz; /* current size limit of rstack */
124: int rstackpos; /* position in rstack */
1.227 schwarze 125: int format; /* current file in mdoc or man format */
1.223 schwarze 126: char control; /* control character */
1.303 schwarze 127: char escape; /* escape character */
1.79 kristaps 128: };
129:
1.364 schwarze 130: /*
131: * A macro definition, condition, or ignored block.
132: */
1.67 kristaps 133: struct roffnode {
1.294 schwarze 134: enum roff_tok tok; /* type of node */
1.67 kristaps 135: struct roffnode *parent; /* up one in stack */
136: int line; /* parse line */
137: int col; /* parse col */
1.106 kristaps 138: char *name; /* node name, e.g. macro name */
1.364 schwarze 139: char *end; /* custom end macro of the block */
140: int endspan; /* scope to: 1=eol 2=next line -1=\} */
141: int rule; /* content is: 1=evaluated 0=skipped */
1.67 kristaps 142: };
143:
144: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.294 schwarze 145: enum roff_tok tok, /* tok of macro */ \
1.238 schwarze 146: struct buf *buf, /* input buffer */ \
1.67 kristaps 147: int ln, /* parse line */ \
1.75 kristaps 148: int ppos, /* original pos in buffer */ \
149: int pos, /* current pos in buffer */ \
1.74 kristaps 150: int *offs /* reset offset of buffer data */
1.67 kristaps 151:
1.340 schwarze 152: typedef int (*roffproc)(ROFF_ARGS);
1.67 kristaps 153:
154: struct roffmac {
1.79 kristaps 155: roffproc proc; /* process new macro */
156: roffproc text; /* process as child text of macro */
157: roffproc sub; /* process as child of macro */
158: int flags;
159: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.67 kristaps 160: };
161:
1.141 kristaps 162: struct predef {
163: const char *name; /* predefined input name */
164: const char *str; /* replacement symbol */
165: };
166:
167: #define PREDEF(__name, __str) \
168: { (__name), (__str) },
169:
1.266 schwarze 170: /* --- function prototypes ------------------------------------------------ */
171:
1.340 schwarze 172: static int roffnode_cleanscope(struct roff *);
173: static int roffnode_pop(struct roff *);
1.294 schwarze 174: static void roffnode_push(struct roff *, enum roff_tok,
1.155 kristaps 175: const char *, int, int);
1.346 schwarze 176: static void roff_addtbl(struct roff_man *, int, struct tbl_node *);
1.340 schwarze 177: static int roff_als(ROFF_ARGS);
178: static int roff_block(ROFF_ARGS);
179: static int roff_block_text(ROFF_ARGS);
180: static int roff_block_sub(ROFF_ARGS);
1.364 schwarze 181: static int roff_break(ROFF_ARGS);
1.340 schwarze 182: static int roff_cblock(ROFF_ARGS);
183: static int roff_cc(ROFF_ARGS);
184: static int roff_ccond(struct roff *, int, int);
1.341 schwarze 185: static int roff_char(ROFF_ARGS);
1.340 schwarze 186: static int roff_cond(ROFF_ARGS);
1.375 schwarze 187: static int roff_cond_checkend(ROFF_ARGS);
1.340 schwarze 188: static int roff_cond_text(ROFF_ARGS);
189: static int roff_cond_sub(ROFF_ARGS);
190: static int roff_ds(ROFF_ARGS);
191: static int roff_ec(ROFF_ARGS);
192: static int roff_eo(ROFF_ARGS);
193: static int roff_eqndelim(struct roff *, struct buf *, int);
1.372 schwarze 194: static int roff_evalcond(struct roff *, int, char *, int *);
1.234 kristaps 195: static int roff_evalnum(struct roff *, int,
196: const char *, int *, int *, int);
197: static int roff_evalpar(struct roff *, int,
1.261 schwarze 198: const char *, int *, int *, int);
1.198 schwarze 199: static int roff_evalstrcond(const char *, int *);
1.355 schwarze 200: static int roff_expand(struct roff *, struct buf *,
201: int, int, char);
1.388 schwarze 202: static void roff_expand_patch(struct buf *, int,
203: const char *, int);
1.155 kristaps 204: static void roff_free1(struct roff *);
1.180 schwarze 205: static void roff_freereg(struct roffreg *);
1.167 kristaps 206: static void roff_freestr(struct roffkv *);
1.212 schwarze 207: static size_t roff_getname(struct roff *, char **, int, int);
1.261 schwarze 208: static int roff_getnum(const char *, int *, int *, int);
1.184 schwarze 209: static int roff_getop(const char *, int *, char *);
1.327 schwarze 210: static int roff_getregn(struct roff *,
211: const char *, size_t, char);
1.273 schwarze 212: static int roff_getregro(const struct roff *,
213: const char *name);
1.325 schwarze 214: static const char *roff_getstrn(struct roff *,
1.315 schwarze 215: const char *, size_t, int *);
1.271 schwarze 216: static int roff_hasregn(const struct roff *,
217: const char *, size_t);
1.340 schwarze 218: static int roff_insec(ROFF_ARGS);
219: static int roff_it(ROFF_ARGS);
220: static int roff_line_ignore(ROFF_ARGS);
1.265 schwarze 221: static void roff_man_alloc1(struct roff_man *);
222: static void roff_man_free1(struct roff_man *);
1.340 schwarze 223: static int roff_manyarg(ROFF_ARGS);
1.384 schwarze 224: static int roff_mc(ROFF_ARGS);
1.358 schwarze 225: static int roff_noarg(ROFF_ARGS);
1.340 schwarze 226: static int roff_nop(ROFF_ARGS);
227: static int roff_nr(ROFF_ARGS);
228: static int roff_onearg(ROFF_ARGS);
1.294 schwarze 229: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.214 schwarze 230: int, int);
1.387 schwarze 231: static int roff_parse_comment(struct roff *, struct buf *,
232: int, int, char);
1.340 schwarze 233: static int roff_parsetext(struct roff *, struct buf *,
1.305 schwarze 234: int, int *);
1.340 schwarze 235: static int roff_renamed(ROFF_ARGS);
1.386 schwarze 236: static int roff_req_or_macro(ROFF_ARGS);
1.340 schwarze 237: static int roff_return(ROFF_ARGS);
238: static int roff_rm(ROFF_ARGS);
239: static int roff_rn(ROFF_ARGS);
240: static int roff_rr(ROFF_ARGS);
1.326 schwarze 241: static void roff_setregn(struct roff *, const char *,
1.327 schwarze 242: size_t, int, char, int);
1.94 kristaps 243: static void roff_setstr(struct roff *,
1.106 kristaps 244: const char *, const char *, int);
1.207 schwarze 245: static void roff_setstrn(struct roffkv **, const char *,
1.164 kristaps 246: size_t, const char *, size_t, int);
1.340 schwarze 247: static int roff_shift(ROFF_ARGS);
248: static int roff_so(ROFF_ARGS);
249: static int roff_tr(ROFF_ARGS);
250: static int roff_Dd(ROFF_ARGS);
251: static int roff_TE(ROFF_ARGS);
252: static int roff_TS(ROFF_ARGS);
253: static int roff_EQ(ROFF_ARGS);
254: static int roff_EN(ROFF_ARGS);
255: static int roff_T_(ROFF_ARGS);
256: static int roff_unsupp(ROFF_ARGS);
257: static int roff_userdef(ROFF_ARGS);
1.67 kristaps 258:
1.266 schwarze 259: /* --- constant data ------------------------------------------------------ */
260:
1.261 schwarze 261: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
262: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
263:
1.294 schwarze 264: const char *__roff_name[MAN_MAX + 1] = {
1.358 schwarze 265: "br", "ce", "fi", "ft",
266: "ll", "mc", "nf",
267: "po", "rj", "sp",
1.312 schwarze 268: "ta", "ti", NULL,
1.294 schwarze 269: "ab", "ad", "af", "aln",
270: "als", "am", "am1", "ami",
271: "ami1", "as", "as1", "asciify",
272: "backtrace", "bd", "bleedat", "blm",
273: "box", "boxa", "bp", "BP",
274: "break", "breakchar", "brnl", "brp",
1.305 schwarze 275: "brpnl", "c2", "cc",
1.294 schwarze 276: "cf", "cflags", "ch", "char",
277: "chop", "class", "close", "CL",
278: "color", "composite", "continue", "cp",
279: "cropat", "cs", "cu", "da",
280: "dch", "Dd", "de", "de1",
281: "defcolor", "dei", "dei1", "device",
282: "devicem", "di", "do", "ds",
283: "ds1", "dwh", "dt", "ec",
284: "ecr", "ecs", "el", "em",
285: "EN", "eo", "EP", "EQ",
286: "errprint", "ev", "evc", "ex",
287: "fallback", "fam", "fc", "fchar",
288: "fcolor", "fdeferlig", "feature", "fkern",
289: "fl", "flig", "fp", "fps",
290: "fschar", "fspacewidth", "fspecial", "ftr",
291: "fzoom", "gcolor", "hc", "hcode",
292: "hidechar", "hla", "hlm", "hpf",
293: "hpfa", "hpfcode", "hw", "hy",
294: "hylang", "hylen", "hym", "hypp",
295: "hys", "ie", "if", "ig",
296: "index", "it", "itc", "IX",
297: "kern", "kernafter", "kernbefore", "kernpair",
298: "lc", "lc_ctype", "lds", "length",
299: "letadj", "lf", "lg", "lhang",
300: "linetabs", "lnr", "lnrf", "lpfx",
1.304 schwarze 301: "ls", "lsm", "lt",
1.294 schwarze 302: "mediasize", "minss", "mk", "mso",
303: "na", "ne", "nh", "nhychar",
304: "nm", "nn", "nop", "nr",
305: "nrf", "nroff", "ns", "nx",
306: "open", "opena", "os", "output",
307: "padj", "papersize", "pc", "pev",
308: "pi", "PI", "pl", "pm",
1.312 schwarze 309: "pn", "pnr", "ps",
1.294 schwarze 310: "psbb", "pshape", "pso", "ptr",
311: "pvs", "rchar", "rd", "recursionlimit",
1.309 schwarze 312: "return", "rfschar", "rhang",
1.294 schwarze 313: "rm", "rn", "rnn", "rr",
314: "rs", "rt", "schar", "sentchar",
315: "shc", "shift", "sizes", "so",
316: "spacewidth", "special", "spreadwarn", "ss",
317: "sty", "substring", "sv", "sy",
1.300 schwarze 318: "T&", "tc", "TE",
1.301 schwarze 319: "TH", "tkf", "tl",
1.294 schwarze 320: "tm", "tm1", "tmc", "tr",
321: "track", "transchar", "trf", "trimat",
322: "trin", "trnt", "troff", "TS",
323: "uf", "ul", "unformat", "unwatch",
324: "unwatchn", "vpt", "vs", "warn",
325: "warnscale", "watch", "watchlength", "watchn",
326: "wh", "while", "write", "writec",
327: "writem", "xflag", ".", NULL,
1.306 schwarze 328: NULL, "text",
1.294 schwarze 329: "Dd", "Dt", "Os", "Sh",
330: "Ss", "Pp", "D1", "Dl",
331: "Bd", "Ed", "Bl", "El",
332: "It", "Ad", "An", "Ap",
333: "Ar", "Cd", "Cm", "Dv",
334: "Er", "Ev", "Ex", "Fa",
335: "Fd", "Fl", "Fn", "Ft",
336: "Ic", "In", "Li", "Nd",
337: "Nm", "Op", "Ot", "Pa",
338: "Rv", "St", "Va", "Vt",
339: "Xr", "%A", "%B", "%D",
340: "%I", "%J", "%N", "%O",
341: "%P", "%R", "%T", "%V",
342: "Ac", "Ao", "Aq", "At",
343: "Bc", "Bf", "Bo", "Bq",
344: "Bsx", "Bx", "Db", "Dc",
345: "Do", "Dq", "Ec", "Ef",
346: "Em", "Eo", "Fx", "Ms",
347: "No", "Ns", "Nx", "Ox",
348: "Pc", "Pf", "Po", "Pq",
349: "Qc", "Ql", "Qo", "Qq",
350: "Re", "Rs", "Sc", "So",
351: "Sq", "Sm", "Sx", "Sy",
352: "Tn", "Ux", "Xc", "Xo",
353: "Fo", "Fc", "Oo", "Oc",
354: "Bk", "Ek", "Bt", "Hf",
355: "Fr", "Ud", "Lb", "Lp",
356: "Lk", "Mt", "Brq", "Bro",
357: "Brc", "%C", "Es", "En",
1.299 schwarze 358: "Dx", "%Q", "%U", "Ta",
1.369 schwarze 359: "Tg", NULL,
1.294 schwarze 360: "TH", "SH", "SS", "TP",
1.332 schwarze 361: "TQ",
1.294 schwarze 362: "LP", "PP", "P", "IP",
363: "HP", "SM", "SB", "BI",
364: "IB", "BR", "RB", "R",
365: "B", "I", "IR", "RI",
366: "RE", "RS", "DT", "UC",
1.297 schwarze 367: "PD", "AT", "in",
1.333 schwarze 368: "SY", "YS", "OP",
369: "EX", "EE", "UR",
1.317 schwarze 370: "UE", "MT", "ME", NULL
1.294 schwarze 371: };
372: const char *const *roff_name = __roff_name;
373:
374: static struct roffmac roffs[TOKEN_NONE] = {
1.358 schwarze 375: { roff_noarg, NULL, NULL, 0 }, /* br */
1.305 schwarze 376: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.358 schwarze 377: { roff_noarg, NULL, NULL, 0 }, /* fi */
1.297 schwarze 378: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.298 schwarze 379: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.384 schwarze 380: { roff_mc, NULL, NULL, 0 }, /* mc */
1.358 schwarze 381: { roff_noarg, NULL, NULL, 0 }, /* nf */
1.312 schwarze 382: { roff_onearg, NULL, NULL, 0 }, /* po */
1.309 schwarze 383: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.299 schwarze 384: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.300 schwarze 385: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.301 schwarze 386: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.296 schwarze 387: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.295 schwarze 388: { roff_unsupp, NULL, NULL, 0 }, /* ab */
389: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
390: { roff_line_ignore, NULL, NULL, 0 }, /* af */
391: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.311 schwarze 392: { roff_als, NULL, NULL, 0 }, /* als */
1.295 schwarze 393: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
394: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
395: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
396: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
397: { roff_ds, NULL, NULL, 0 }, /* as */
398: { roff_ds, NULL, NULL, 0 }, /* as1 */
399: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
400: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
401: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
402: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
403: { roff_unsupp, NULL, NULL, 0 }, /* blm */
404: { roff_unsupp, NULL, NULL, 0 }, /* box */
405: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
406: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
407: { roff_unsupp, NULL, NULL, 0 }, /* BP */
1.364 schwarze 408: { roff_break, NULL, NULL, 0 }, /* break */
1.295 schwarze 409: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
410: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.358 schwarze 411: { roff_noarg, NULL, NULL, 0 }, /* brp */
1.295 schwarze 412: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
413: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
414: { roff_cc, NULL, NULL, 0 }, /* cc */
415: { roff_insec, NULL, NULL, 0 }, /* cf */
416: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
417: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
1.341 schwarze 418: { roff_char, NULL, NULL, 0 }, /* char */
1.295 schwarze 419: { roff_unsupp, NULL, NULL, 0 }, /* chop */
420: { roff_line_ignore, NULL, NULL, 0 }, /* class */
421: { roff_insec, NULL, NULL, 0 }, /* close */
422: { roff_unsupp, NULL, NULL, 0 }, /* CL */
423: { roff_line_ignore, NULL, NULL, 0 }, /* color */
424: { roff_unsupp, NULL, NULL, 0 }, /* composite */
425: { roff_unsupp, NULL, NULL, 0 }, /* continue */
426: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
427: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
428: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
429: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
430: { roff_unsupp, NULL, NULL, 0 }, /* da */
431: { roff_unsupp, NULL, NULL, 0 }, /* dch */
432: { roff_Dd, NULL, NULL, 0 }, /* Dd */
433: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
434: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
435: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
436: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
437: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
438: { roff_unsupp, NULL, NULL, 0 }, /* device */
439: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
440: { roff_unsupp, NULL, NULL, 0 }, /* di */
441: { roff_unsupp, NULL, NULL, 0 }, /* do */
442: { roff_ds, NULL, NULL, 0 }, /* ds */
443: { roff_ds, NULL, NULL, 0 }, /* ds1 */
444: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
445: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.303 schwarze 446: { roff_ec, NULL, NULL, 0 }, /* ec */
1.295 schwarze 447: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
448: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
449: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
450: { roff_unsupp, NULL, NULL, 0 }, /* em */
451: { roff_EN, NULL, NULL, 0 }, /* EN */
1.303 schwarze 452: { roff_eo, NULL, NULL, 0 }, /* eo */
1.295 schwarze 453: { roff_unsupp, NULL, NULL, 0 }, /* EP */
454: { roff_EQ, NULL, NULL, 0 }, /* EQ */
455: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
456: { roff_unsupp, NULL, NULL, 0 }, /* ev */
457: { roff_unsupp, NULL, NULL, 0 }, /* evc */
458: { roff_unsupp, NULL, NULL, 0 }, /* ex */
459: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
460: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
461: { roff_unsupp, NULL, NULL, 0 }, /* fc */
462: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
463: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
464: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
465: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
466: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
467: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
468: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
469: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
470: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
471: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
472: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
473: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
474: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
475: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
476: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
477: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
478: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
479: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
480: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
481: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
482: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
483: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
484: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
485: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
486: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
487: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
488: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
489: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
490: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
491: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
492: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
493: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
494: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
495: { roff_unsupp, NULL, NULL, 0 }, /* index */
496: { roff_it, NULL, NULL, 0 }, /* it */
497: { roff_unsupp, NULL, NULL, 0 }, /* itc */
498: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
499: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
500: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
501: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
502: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
503: { roff_unsupp, NULL, NULL, 0 }, /* lc */
504: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
505: { roff_unsupp, NULL, NULL, 0 }, /* lds */
506: { roff_unsupp, NULL, NULL, 0 }, /* length */
507: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
508: { roff_insec, NULL, NULL, 0 }, /* lf */
509: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
510: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
511: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
512: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
513: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
514: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
515: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
516: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
517: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
518: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
519: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
520: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
521: { roff_insec, NULL, NULL, 0 }, /* mso */
522: { roff_line_ignore, NULL, NULL, 0 }, /* na */
523: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
524: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
525: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
526: { roff_unsupp, NULL, NULL, 0 }, /* nm */
527: { roff_unsupp, NULL, NULL, 0 }, /* nn */
1.330 schwarze 528: { roff_nop, NULL, NULL, 0 }, /* nop */
1.295 schwarze 529: { roff_nr, NULL, NULL, 0 }, /* nr */
530: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
531: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
532: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
533: { roff_insec, NULL, NULL, 0 }, /* nx */
534: { roff_insec, NULL, NULL, 0 }, /* open */
535: { roff_insec, NULL, NULL, 0 }, /* opena */
536: { roff_line_ignore, NULL, NULL, 0 }, /* os */
537: { roff_unsupp, NULL, NULL, 0 }, /* output */
538: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
539: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
540: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
541: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
542: { roff_insec, NULL, NULL, 0 }, /* pi */
543: { roff_unsupp, NULL, NULL, 0 }, /* PI */
544: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
545: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
546: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
547: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
548: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
549: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
550: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
551: { roff_insec, NULL, NULL, 0 }, /* pso */
552: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
553: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
554: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
555: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
556: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
1.339 schwarze 557: { roff_return, NULL, NULL, 0 }, /* return */
1.295 schwarze 558: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
559: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
560: { roff_rm, NULL, NULL, 0 }, /* rm */
1.306 schwarze 561: { roff_rn, NULL, NULL, 0 }, /* rn */
1.295 schwarze 562: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
563: { roff_rr, NULL, NULL, 0 }, /* rr */
564: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
565: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
566: { roff_unsupp, NULL, NULL, 0 }, /* schar */
567: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
568: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
1.339 schwarze 569: { roff_shift, NULL, NULL, 0 }, /* shift */
1.295 schwarze 570: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
571: { roff_so, NULL, NULL, 0 }, /* so */
572: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
573: { roff_line_ignore, NULL, NULL, 0 }, /* special */
574: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
575: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
576: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
577: { roff_unsupp, NULL, NULL, 0 }, /* substring */
578: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
579: { roff_insec, NULL, NULL, 0 }, /* sy */
580: { roff_T_, NULL, NULL, 0 }, /* T& */
581: { roff_unsupp, NULL, NULL, 0 }, /* tc */
582: { roff_TE, NULL, NULL, 0 }, /* TE */
1.315 schwarze 583: { roff_Dd, NULL, NULL, 0 }, /* TH */
1.295 schwarze 584: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
585: { roff_unsupp, NULL, NULL, 0 }, /* tl */
586: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
587: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
588: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
589: { roff_tr, NULL, NULL, 0 }, /* tr */
590: { roff_line_ignore, NULL, NULL, 0 }, /* track */
591: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
592: { roff_insec, NULL, NULL, 0 }, /* trf */
593: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
594: { roff_unsupp, NULL, NULL, 0 }, /* trin */
595: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
596: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
597: { roff_TS, NULL, NULL, 0 }, /* TS */
598: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
599: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
600: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
601: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
602: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
603: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
604: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
605: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
606: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
607: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
608: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
609: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
610: { roff_unsupp, NULL, NULL, 0 }, /* wh */
1.340 schwarze 611: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /*while*/
1.295 schwarze 612: { roff_insec, NULL, NULL, 0 }, /* write */
613: { roff_insec, NULL, NULL, 0 }, /* writec */
614: { roff_insec, NULL, NULL, 0 }, /* writem */
615: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
616: { roff_cblock, NULL, NULL, 0 }, /* . */
1.306 schwarze 617: { roff_renamed, NULL, NULL, 0 },
1.295 schwarze 618: { roff_userdef, NULL, NULL, 0 }
1.67 kristaps 619: };
620:
1.141 kristaps 621: /* Array of injected predefined strings. */
622: #define PREDEFS_MAX 38
623: static const struct predef predefs[PREDEFS_MAX] = {
624: #include "predefs.in"
625: };
626:
1.305 schwarze 627: static int roffce_lines; /* number of input lines to center */
628: static struct roff_node *roffce_node; /* active request */
1.178 schwarze 629: static int roffit_lines; /* number of lines to delay */
630: static char *roffit_macro; /* nil-terminated macro line */
631:
1.207 schwarze 632:
1.266 schwarze 633: /* --- request table ------------------------------------------------------ */
634:
1.295 schwarze 635: struct ohash *
636: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.85 kristaps 637: {
1.295 schwarze 638: struct ohash *htab;
639: struct roffreq *req;
640: enum roff_tok tok;
641: size_t sz;
642: unsigned int slot;
1.85 kristaps 643:
1.295 schwarze 644: htab = mandoc_malloc(sizeof(*htab));
645: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.85 kristaps 646:
1.295 schwarze 647: for (tok = mintok; tok < maxtok; tok++) {
1.296 schwarze 648: if (roff_name[tok] == NULL)
649: continue;
1.295 schwarze 650: sz = strlen(roff_name[tok]);
651: req = mandoc_malloc(sizeof(*req) + sz + 1);
652: req->tok = tok;
653: memcpy(req->name, roff_name[tok], sz + 1);
654: slot = ohash_qlookup(htab, req->name);
655: ohash_insert(htab, slot, req);
1.85 kristaps 656: }
1.295 schwarze 657: return htab;
1.85 kristaps 658: }
659:
1.295 schwarze 660: void
661: roffhash_free(struct ohash *htab)
1.67 kristaps 662: {
1.295 schwarze 663: struct roffreq *req;
664: unsigned int slot;
1.67 kristaps 665:
1.295 schwarze 666: if (htab == NULL)
667: return;
668: for (req = ohash_first(htab, &slot); req != NULL;
669: req = ohash_next(htab, &slot))
670: free(req);
671: ohash_delete(htab);
672: free(htab);
673: }
674:
675: enum roff_tok
676: roffhash_find(struct ohash *htab, const char *name, size_t sz)
677: {
678: struct roffreq *req;
679: const char *end;
680:
681: if (sz) {
682: end = name + sz;
683: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
684: } else
685: req = ohash_find(htab, ohash_qlookup(htab, name));
686: return req == NULL ? TOKEN_NONE : req->tok;
1.67 kristaps 687: }
688:
1.266 schwarze 689: /* --- stack of request blocks -------------------------------------------- */
690:
1.67 kristaps 691: /*
692: * Pop the current node off of the stack of roff instructions currently
1.364 schwarze 693: * pending. Return 1 if it is a loop or 0 otherwise.
1.67 kristaps 694: */
1.340 schwarze 695: static int
1.67 kristaps 696: roffnode_pop(struct roff *r)
697: {
698: struct roffnode *p;
1.340 schwarze 699: int inloop;
1.67 kristaps 700:
1.207 schwarze 701: p = r->last;
1.340 schwarze 702: inloop = p->tok == ROFF_while;
703: r->last = p->parent;
1.106 kristaps 704: free(p->name);
705: free(p->end);
1.67 kristaps 706: free(p);
1.340 schwarze 707: return inloop;
1.67 kristaps 708: }
709:
710: /*
711: * Push a roff node onto the instruction stack. This must later be
712: * removed with roffnode_pop().
713: */
1.98 schwarze 714: static void
1.294 schwarze 715: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.106 kristaps 716: int line, int col)
1.67 kristaps 717: {
718: struct roffnode *p;
719:
1.98 schwarze 720: p = mandoc_calloc(1, sizeof(struct roffnode));
1.67 kristaps 721: p->tok = tok;
1.106 kristaps 722: if (name)
723: p->name = mandoc_strdup(name);
1.67 kristaps 724: p->parent = r->last;
725: p->line = line;
726: p->col = col;
1.198 schwarze 727: p->rule = p->parent ? p->parent->rule : 0;
1.67 kristaps 728:
729: r->last = p;
730: }
731:
1.266 schwarze 732: /* --- roff parser state data management ---------------------------------- */
733:
1.67 kristaps 734: static void
735: roff_free1(struct roff *r)
736: {
1.167 kristaps 737: int i;
1.67 kristaps 738:
1.346 schwarze 739: tbl_free(r->first_tbl);
1.113 kristaps 740: r->first_tbl = r->last_tbl = r->tbl = NULL;
741:
1.347 schwarze 742: eqn_free(r->last_eqn);
1.319 schwarze 743: r->last_eqn = r->eqn = NULL;
1.125 kristaps 744:
1.339 schwarze 745: while (r->mstackpos >= 0)
746: roff_userret(r);
747:
1.67 kristaps 748: while (r->last)
749: roffnode_pop(r);
1.109 kristaps 750:
1.223 schwarze 751: free (r->rstack);
752: r->rstack = NULL;
753: r->rstacksz = 0;
754: r->rstackpos = -1;
755:
756: roff_freereg(r->regtab);
757: r->regtab = NULL;
758:
1.167 kristaps 759: roff_freestr(r->strtab);
1.306 schwarze 760: roff_freestr(r->rentab);
1.167 kristaps 761: roff_freestr(r->xmbtab);
1.306 schwarze 762: r->strtab = r->rentab = r->xmbtab = NULL;
1.167 kristaps 763:
764: if (r->xtab)
765: for (i = 0; i < 128; i++)
766: free(r->xtab[i].p);
767: free(r->xtab);
768: r->xtab = NULL;
1.67 kristaps 769: }
770:
771: void
772: roff_reset(struct roff *r)
773: {
774: roff_free1(r);
1.367 schwarze 775: r->options |= MPARSE_COMMENT;
1.227 schwarze 776: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.303 schwarze 777: r->control = '\0';
778: r->escape = '\\';
1.307 schwarze 779: roffce_lines = 0;
780: roffce_node = NULL;
781: roffit_lines = 0;
782: roffit_macro = NULL;
1.67 kristaps 783: }
784:
785: void
786: roff_free(struct roff *r)
787: {
1.366 schwarze 788: int i;
1.339 schwarze 789:
1.67 kristaps 790: roff_free1(r);
1.339 schwarze 791: for (i = 0; i < r->mstacksz; i++)
792: free(r->mstack[i].argv);
793: free(r->mstack);
1.295 schwarze 794: roffhash_free(r->reqtab);
1.67 kristaps 795: free(r);
796: }
797:
798: struct roff *
1.351 schwarze 799: roff_alloc(int options)
1.67 kristaps 800: {
801: struct roff *r;
802:
1.98 schwarze 803: r = mandoc_calloc(1, sizeof(struct roff));
1.328 schwarze 804: r->reqtab = roffhash_alloc(0, ROFF_RENAMED);
1.367 schwarze 805: r->options = options | MPARSE_COMMENT;
1.227 schwarze 806: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.339 schwarze 807: r->mstackpos = -1;
1.82 kristaps 808: r->rstackpos = -1;
1.303 schwarze 809: r->escape = '\\';
1.277 schwarze 810: return r;
1.265 schwarze 811: }
812:
1.266 schwarze 813: /* --- syntax tree state data management ---------------------------------- */
814:
1.265 schwarze 815: static void
816: roff_man_free1(struct roff_man *man)
817: {
1.356 schwarze 818: if (man->meta.first != NULL)
819: roff_node_delete(man, man->meta.first);
1.265 schwarze 820: free(man->meta.msec);
821: free(man->meta.vol);
822: free(man->meta.os);
823: free(man->meta.arch);
824: free(man->meta.title);
825: free(man->meta.name);
826: free(man->meta.date);
1.356 schwarze 827: free(man->meta.sodest);
1.265 schwarze 828: }
829:
1.357 schwarze 830: void
831: roff_state_reset(struct roff_man *man)
832: {
833: man->last = man->meta.first;
834: man->last_es = NULL;
835: man->flags = 0;
836: man->lastsec = man->lastnamed = SEC_NONE;
837: man->next = ROFF_NEXT_CHILD;
838: roff_setreg(man->roff, "nS", 0, '=');
839: }
840:
1.265 schwarze 841: static void
842: roff_man_alloc1(struct roff_man *man)
843: {
844: memset(&man->meta, 0, sizeof(man->meta));
1.356 schwarze 845: man->meta.first = mandoc_calloc(1, sizeof(*man->meta.first));
846: man->meta.first->type = ROFFT_ROOT;
847: man->meta.macroset = MACROSET_NONE;
1.357 schwarze 848: roff_state_reset(man);
1.265 schwarze 849: }
850:
851: void
852: roff_man_reset(struct roff_man *man)
853: {
854: roff_man_free1(man);
855: roff_man_alloc1(man);
856: }
857:
858: void
859: roff_man_free(struct roff_man *man)
860: {
861: roff_man_free1(man);
1.380 schwarze 862: free(man->os_r);
1.265 schwarze 863: free(man);
864: }
865:
866: struct roff_man *
1.351 schwarze 867: roff_man_alloc(struct roff *roff, const char *os_s, int quick)
1.265 schwarze 868: {
869: struct roff_man *man;
870:
871: man = mandoc_calloc(1, sizeof(*man));
872: man->roff = roff;
1.316 schwarze 873: man->os_s = os_s;
1.265 schwarze 874: man->quick = quick;
875: roff_man_alloc1(man);
1.296 schwarze 876: roff->man = man;
1.277 schwarze 877: return man;
1.67 kristaps 878: }
879:
1.266 schwarze 880: /* --- syntax tree handling ----------------------------------------------- */
881:
882: struct roff_node *
883: roff_node_alloc(struct roff_man *man, int line, int pos,
884: enum roff_type type, int tok)
885: {
886: struct roff_node *n;
887:
888: n = mandoc_calloc(1, sizeof(*n));
889: n->line = line;
890: n->pos = pos;
891: n->tok = tok;
892: n->type = type;
893: n->sec = man->lastsec;
894:
895: if (man->flags & MDOC_SYNOPSIS)
1.285 schwarze 896: n->flags |= NODE_SYNPRETTY;
1.266 schwarze 897: else
1.285 schwarze 898: n->flags &= ~NODE_SYNPRETTY;
1.360 schwarze 899: if ((man->flags & (ROFF_NOFILL | ROFF_NONOFILL)) == ROFF_NOFILL)
1.359 schwarze 900: n->flags |= NODE_NOFILL;
901: else
902: n->flags &= ~NODE_NOFILL;
1.266 schwarze 903: if (man->flags & MDOC_NEWLINE)
1.285 schwarze 904: n->flags |= NODE_LINE;
1.266 schwarze 905: man->flags &= ~MDOC_NEWLINE;
906:
1.277 schwarze 907: return n;
1.266 schwarze 908: }
909:
910: void
911: roff_node_append(struct roff_man *man, struct roff_node *n)
912: {
913:
914: switch (man->next) {
915: case ROFF_NEXT_SIBLING:
1.281 schwarze 916: if (man->last->next != NULL) {
917: n->next = man->last->next;
918: man->last->next->prev = n;
919: } else
920: man->last->parent->last = n;
1.266 schwarze 921: man->last->next = n;
922: n->prev = man->last;
923: n->parent = man->last->parent;
924: break;
925: case ROFF_NEXT_CHILD:
1.287 schwarze 926: if (man->last->child != NULL) {
927: n->next = man->last->child;
928: man->last->child->prev = n;
929: } else
930: man->last->last = n;
1.266 schwarze 931: man->last->child = n;
932: n->parent = man->last;
933: break;
934: default:
935: abort();
936: }
1.282 schwarze 937: man->last = n;
1.266 schwarze 938:
939: switch (n->type) {
940: case ROFFT_HEAD:
941: n->parent->head = n;
942: break;
943: case ROFFT_BODY:
1.282 schwarze 944: if (n->end != ENDBODY_NOT)
945: return;
1.266 schwarze 946: n->parent->body = n;
947: break;
948: case ROFFT_TAIL:
949: n->parent->tail = n;
950: break;
951: default:
1.282 schwarze 952: return;
1.266 schwarze 953: }
1.282 schwarze 954:
955: /*
956: * Copy over the normalised-data pointer of our parent. Not
957: * everybody has one, but copying a null pointer is fine.
958: */
959:
960: n->norm = n->parent->norm;
961: assert(n->parent->type == ROFFT_BLOCK);
1.266 schwarze 962: }
963:
1.267 schwarze 964: void
965: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
966: {
967: struct roff_node *n;
968:
969: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
970: n->string = roff_strdup(man->roff, word);
971: roff_node_append(man, n);
1.286 schwarze 972: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 973: man->next = ROFF_NEXT_SIBLING;
974: }
975:
976: void
977: roff_word_append(struct roff_man *man, const char *word)
978: {
979: struct roff_node *n;
980: char *addstr, *newstr;
981:
982: n = man->last;
983: addstr = roff_strdup(man->roff, word);
984: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
985: free(addstr);
986: free(n->string);
987: n->string = newstr;
988: man->next = ROFF_NEXT_SIBLING;
1.268 schwarze 989: }
990:
991: void
992: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
993: {
994: struct roff_node *n;
995:
996: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
997: roff_node_append(man, n);
998: man->next = ROFF_NEXT_CHILD;
999: }
1000:
1001: struct roff_node *
1002: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
1003: {
1004: struct roff_node *n;
1005:
1006: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
1007: roff_node_append(man, n);
1008: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1009: return n;
1.267 schwarze 1010: }
1011:
1.266 schwarze 1012: struct roff_node *
1013: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
1014: {
1015: struct roff_node *n;
1016:
1017: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
1018: roff_node_append(man, n);
1019: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1020: return n;
1.266 schwarze 1021: }
1022:
1023: struct roff_node *
1024: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1025: {
1026: struct roff_node *n;
1027:
1028: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1029: roff_node_append(man, n);
1030: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1031: return n;
1.267 schwarze 1032: }
1033:
1.321 schwarze 1034: static void
1.346 schwarze 1035: roff_addtbl(struct roff_man *man, int line, struct tbl_node *tbl)
1.267 schwarze 1036: {
1037: struct roff_node *n;
1.346 schwarze 1038: struct tbl_span *span;
1.267 schwarze 1039:
1.356 schwarze 1040: if (man->meta.macroset == MACROSET_MAN)
1.302 schwarze 1041: man_breakscope(man, ROFF_TS);
1.321 schwarze 1042: while ((span = tbl_span(tbl)) != NULL) {
1.346 schwarze 1043: n = roff_node_alloc(man, line, 0, ROFFT_TBL, TOKEN_NONE);
1.321 schwarze 1044: n->span = span;
1045: roff_node_append(man, n);
1046: n->flags |= NODE_VALID | NODE_ENDED;
1047: man->next = ROFF_NEXT_SIBLING;
1048: }
1.266 schwarze 1049: }
1050:
1051: void
1052: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1053: {
1054:
1055: /* Adjust siblings. */
1056:
1057: if (n->prev)
1058: n->prev->next = n->next;
1059: if (n->next)
1060: n->next->prev = n->prev;
1061:
1062: /* Adjust parent. */
1063:
1064: if (n->parent != NULL) {
1065: if (n->parent->child == n)
1066: n->parent->child = n->next;
1067: if (n->parent->last == n)
1068: n->parent->last = n->prev;
1069: }
1070:
1071: /* Adjust parse point. */
1072:
1073: if (man == NULL)
1074: return;
1075: if (man->last == n) {
1076: if (n->prev == NULL) {
1077: man->last = n->parent;
1078: man->next = ROFF_NEXT_CHILD;
1079: } else {
1080: man->last = n->prev;
1081: man->next = ROFF_NEXT_SIBLING;
1082: }
1083: }
1.356 schwarze 1084: if (man->meta.first == n)
1085: man->meta.first = NULL;
1.344 schwarze 1086: }
1087:
1088: void
1089: roff_node_relink(struct roff_man *man, struct roff_node *n)
1090: {
1091: roff_node_unlink(man, n);
1092: n->prev = n->next = NULL;
1093: roff_node_append(man, n);
1.266 schwarze 1094: }
1095:
1096: void
1097: roff_node_free(struct roff_node *n)
1098: {
1099:
1100: if (n->args != NULL)
1101: mdoc_argv_free(n->args);
1102: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1103: free(n->norm);
1.347 schwarze 1104: eqn_box_free(n->eqn);
1.266 schwarze 1105: free(n->string);
1.374 schwarze 1106: free(n->tag);
1.266 schwarze 1107: free(n);
1108: }
1109:
1110: void
1111: roff_node_delete(struct roff_man *man, struct roff_node *n)
1112: {
1113:
1114: while (n->child != NULL)
1115: roff_node_delete(man, n->child);
1116: roff_node_unlink(man, n);
1117: roff_node_free(n);
1.370 schwarze 1118: }
1119:
1120: int
1121: roff_node_transparent(struct roff_node *n)
1122: {
1123: if (n == NULL)
1124: return 0;
1125: if (n->type == ROFFT_COMMENT || n->flags & NODE_NOPRT)
1126: return 1;
1.373 schwarze 1127: return roff_tok_transparent(n->tok);
1128: }
1129:
1130: int
1131: roff_tok_transparent(enum roff_tok tok)
1132: {
1133: switch (tok) {
1.370 schwarze 1134: case ROFF_ft:
1135: case ROFF_ll:
1136: case ROFF_mc:
1137: case ROFF_po:
1138: case ROFF_ta:
1139: case MDOC_Db:
1140: case MDOC_Es:
1141: case MDOC_Sm:
1142: case MDOC_Tg:
1143: case MAN_DT:
1144: case MAN_UC:
1145: case MAN_PD:
1146: case MAN_AT:
1147: return 1;
1148: default:
1149: return 0;
1150: }
1151: }
1152:
1153: struct roff_node *
1154: roff_node_child(struct roff_node *n)
1155: {
1156: for (n = n->child; roff_node_transparent(n); n = n->next)
1157: continue;
1158: return n;
1159: }
1160:
1161: struct roff_node *
1162: roff_node_prev(struct roff_node *n)
1163: {
1164: do {
1165: n = n->prev;
1166: } while (roff_node_transparent(n));
1167: return n;
1168: }
1169:
1170: struct roff_node *
1171: roff_node_next(struct roff_node *n)
1172: {
1173: do {
1174: n = n->next;
1175: } while (roff_node_transparent(n));
1176: return n;
1.269 schwarze 1177: }
1178:
1179: void
1180: deroff(char **dest, const struct roff_node *n)
1181: {
1182: char *cp;
1183: size_t sz;
1184:
1.371 schwarze 1185: if (n->string == NULL) {
1.269 schwarze 1186: for (n = n->child; n != NULL; n = n->next)
1187: deroff(dest, n);
1188: return;
1189: }
1190:
1.288 schwarze 1191: /* Skip leading whitespace. */
1.269 schwarze 1192:
1.288 schwarze 1193: for (cp = n->string; *cp != '\0'; cp++) {
1.289 schwarze 1194: if (cp[0] == '\\' && cp[1] != '\0' &&
1195: strchr(" %&0^|~", cp[1]) != NULL)
1.269 schwarze 1196: cp++;
1.288 schwarze 1197: else if ( ! isspace((unsigned char)*cp))
1.269 schwarze 1198: break;
1199: }
1200:
1.289 schwarze 1201: /* Skip trailing backslash. */
1202:
1203: sz = strlen(cp);
1.290 schwarze 1204: if (sz > 0 && cp[sz - 1] == '\\')
1.289 schwarze 1205: sz--;
1206:
1.269 schwarze 1207: /* Skip trailing whitespace. */
1208:
1.289 schwarze 1209: for (; sz; sz--)
1.269 schwarze 1210: if ( ! isspace((unsigned char)cp[sz-1]))
1211: break;
1212:
1213: /* Skip empty strings. */
1214:
1215: if (sz == 0)
1216: return;
1217:
1218: if (*dest == NULL) {
1219: *dest = mandoc_strndup(cp, sz);
1220: return;
1221: }
1222:
1223: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1224: free(*dest);
1225: *dest = cp;
1.266 schwarze 1226: }
1227:
1228: /* --- main functions of the roff parser ---------------------------------- */
1229:
1.388 schwarze 1230: /*
1231: * Save comments preceding the title macro, for example in order to
1232: * preserve Copyright and license headers in HTML output,
1233: * provide diagnostics about RCS ids and trailing whitespace in comments,
1234: * then discard comments including preceding whitespace.
1235: * This function also handles input line continuation.
1236: */
1.387 schwarze 1237: static int
1.388 schwarze 1238: roff_parse_comment(struct roff *r, struct buf *buf, int ln, int pos, char ec)
1.387 schwarze 1239: {
1240: struct roff_node *n; /* used for header comments */
1241: const char *start; /* start of the string to process */
1242: const char *cp; /* for RCS id parsing */
1243: char *stesc; /* start of an escape sequence ('\\') */
1244: char *ep; /* end of comment string */
1245: int rcsid; /* kind of RCS id seen */
1246:
1247: for (start = stesc = buf->buf + pos;; stesc++) {
1.388 schwarze 1248: /*
1249: * XXX Ugly hack: Remove the newline character that
1250: * mparse_buf_r() appended to mark the end of input
1251: * if it is not preceded by an escape character.
1252: */
1253: if (stesc[0] == '\n') {
1254: assert(stesc[1] == '\0');
1255: stesc[0] = '\0';
1256: }
1257:
1.387 schwarze 1258: /* The line ends without continuation or comment. */
1259: if (stesc[0] == '\0')
1260: return ROFF_CONT;
1261:
1262: /* Unescaped byte: skip it. */
1.388 schwarze 1263: if (stesc[0] != ec)
1.387 schwarze 1264: continue;
1265:
1.388 schwarze 1266: /*
1267: * XXX Ugly hack: Do not attempt to append another line
1268: * if the function mparse_buf_r() appended a newline
1269: * character to indicate the end of input.
1270: */
1271: if (stesc[1] == '\n') {
1272: assert(stesc[2] == '\0');
1273: stesc[0] = '\0';
1274: return ROFF_CONT;
1275: }
1276:
1277: /*
1278: * An escape character at the end of an input line
1279: * requests line continuation.
1280: */
1.387 schwarze 1281: if (stesc[1] == '\0') {
1282: stesc[0] = '\0';
1283: return ROFF_IGN | ROFF_APPEND;
1284: }
1285:
1286: /* Found a comment: process it. */
1287: if (stesc[1] == '"' || stesc[1] == '#')
1288: break;
1289:
1290: /* Escaped escape character: skip them both. */
1.388 schwarze 1291: if (stesc[1] == ec)
1.387 schwarze 1292: stesc++;
1293: }
1294:
1295: /* Look for an RCS id in the comment. */
1296:
1297: rcsid = 0;
1298: if ((cp = strstr(stesc + 2, "$" "OpenBSD")) != NULL) {
1299: rcsid = 1 << MANDOC_OS_OPENBSD;
1300: cp += 8;
1301: } else if ((cp = strstr(stesc + 2, "$" "NetBSD")) != NULL) {
1302: rcsid = 1 << MANDOC_OS_NETBSD;
1303: cp += 7;
1304: }
1305: if (cp != NULL && isalnum((unsigned char)*cp) == 0 &&
1306: strchr(cp, '$') != NULL) {
1307: if (r->man->meta.rcsids & rcsid)
1308: mandoc_msg(MANDOCERR_RCS_REP, ln,
1309: (int)(stesc - buf->buf) + 2, "%s", stesc + 1);
1310: r->man->meta.rcsids |= rcsid;
1311: }
1312:
1313: /* Warn about trailing whitespace at the end of the comment. */
1314:
1315: ep = strchr(stesc + 2, '\0') - 1;
1316: if (*ep == '\n')
1317: *ep-- = '\0';
1318: if (*ep == ' ' || *ep == '\t')
1319: mandoc_msg(MANDOCERR_SPACE_EOL,
1320: ln, (int)(ep - buf->buf), NULL);
1321:
1322: /* Save comments preceding the title macro in the syntax tree. */
1323:
1324: if (r->options & MPARSE_COMMENT) {
1325: while (*ep == ' ' || *ep == '\t')
1326: ep--;
1327: ep[1] = '\0';
1328: n = roff_node_alloc(r->man, ln, stesc + 1 - buf->buf,
1329: ROFFT_COMMENT, TOKEN_NONE);
1330: n->string = mandoc_strdup(stesc + 2);
1331: roff_node_append(r->man, n);
1332: n->flags |= NODE_VALID | NODE_ENDED;
1333: r->man->next = ROFF_NEXT_SIBLING;
1334: }
1335:
1336: /* The comment requests line continuation. */
1337:
1338: if (stesc[1] == '#') {
1339: *stesc = '\0';
1340: return ROFF_IGN | ROFF_APPEND;
1341: }
1342:
1343: /* Discard the comment including preceding whitespace. */
1344:
1345: while (stesc > start && stesc[-1] == ' ' &&
1346: (stesc == start + 1 || stesc[-2] != '\\'))
1347: stesc--;
1348: *stesc = '\0';
1349: return ROFF_CONT;
1350: }
1351:
1.94 kristaps 1352: /*
1.355 schwarze 1353: * In the current line, expand escape sequences that produce parsable
1354: * input text. Also check the syntax of the remaining escape sequences,
1355: * which typically produce output glyphs or change formatter state.
1.154 kristaps 1356: */
1.340 schwarze 1357: static int
1.388 schwarze 1358: roff_expand(struct roff *r, struct buf *buf, int ln, int pos, char ec)
1.94 kristaps 1359: {
1.388 schwarze 1360: char ubuf[24]; /* buffer to print a number */
1361: struct mctx *ctx; /* current macro call context */
1362: const char *res; /* the string to be pasted */
1363: const char *src; /* source for copying */
1364: char *dst; /* destination for copying */
1365: int iesc; /* index of leading escape char */
1366: int inam; /* index of the escape name */
1367: int iarg; /* index beginning the argument */
1368: int iendarg; /* index right after the argument */
1369: int iend; /* index right after the sequence */
1.393 schwarze 1370: int isrc, idst; /* to reduce \\ and \. in names */
1.388 schwarze 1371: int deftype; /* type of definition to paste */
1372: int argi; /* macro argument index */
1373: int quote_args; /* true for \\$@, false for \\$* */
1374: int asz; /* length of the replacement */
1375: int rsz; /* length of the rest of the string */
1376: int npos; /* position in numeric expression */
1.181 schwarze 1377: int expand_count; /* to avoid infinite loops */
1.303 schwarze 1378:
1.170 schwarze 1379: expand_count = 0;
1.388 schwarze 1380: while (buf->buf[pos] != '\0') {
1.170 schwarze 1381:
1.388 schwarze 1382: /*
1383: * Skip plain ASCII characters.
1384: * If we have a non-standard escape character,
1385: * escape literal backslashes because all processing in
1386: * subsequent functions uses the standard escaping rules.
1387: */
1.205 schwarze 1388:
1.388 schwarze 1389: if (buf->buf[pos] != ec) {
1.397 schwarze 1390: if (buf->buf[pos] == '\\') {
1.388 schwarze 1391: roff_expand_patch(buf, pos, "\\e", pos + 1);
1392: pos++;
1.303 schwarze 1393: }
1.388 schwarze 1394: pos++;
1.205 schwarze 1395: continue;
1.303 schwarze 1396: }
1.205 schwarze 1397:
1.388 schwarze 1398: /*
1399: * Parse escape sequences,
1400: * issue diagnostic messages when appropriate,
1401: * and skip sequences that do not need expansion.
1402: * If we have a non-standard escape character, translate
1403: * it to backslashes and translate backslashes to \e.
1404: */
1.205 schwarze 1405:
1.392 schwarze 1406: if (roff_escape(buf->buf, ln, pos, &iesc, &inam,
1407: &iarg, &iendarg, &iend) != ESCAPE_EXPAND) {
1.388 schwarze 1408: while (pos < iend) {
1409: if (buf->buf[pos] == ec) {
1410: buf->buf[pos] = '\\';
1411: if (pos + 1 < iend)
1412: pos++;
1413: } else if (buf->buf[pos] == '\\') {
1414: roff_expand_patch(buf,
1415: pos, "\\e", pos + 1);
1416: pos++;
1417: iend++;
1418: }
1419: pos++;
1.352 schwarze 1420: }
1.205 schwarze 1421: continue;
1.152 kristaps 1422: }
1.388 schwarze 1423:
1.393 schwarze 1424: /* Reduce \\ and \. in names. */
1425:
1426: if (buf->buf[inam] == '*' || buf->buf[inam] == 'n') {
1427: isrc = idst = iarg;
1428: while (isrc < iendarg) {
1429: if (isrc + 1 < iendarg &&
1430: buf->buf[isrc] == '\\' &&
1431: (buf->buf[isrc + 1] == '\\' ||
1432: buf->buf[isrc + 1] == '.'))
1433: isrc++;
1434: buf->buf[idst++] = buf->buf[isrc++];
1435: }
1436: iendarg -= isrc - idst;
1437: }
1438:
1.388 schwarze 1439: /* Handle expansion. */
1440:
1441: res = NULL;
1442: switch (buf->buf[inam]) {
1443: case '*':
1444: if (iendarg == iarg)
1.206 schwarze 1445: break;
1.388 schwarze 1446: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1447: if ((res = roff_getstrn(r, buf->buf + iarg,
1448: iendarg - iarg, &deftype)) != NULL)
1.206 schwarze 1449: break;
1.94 kristaps 1450:
1.388 schwarze 1451: /*
1.396 schwarze 1452: * If not overridden,
1.388 schwarze 1453: * let \*(.T through to the formatters.
1454: */
1.94 kristaps 1455:
1.388 schwarze 1456: if (iendarg - iarg == 2 &&
1457: buf->buf[iarg] == '.' &&
1458: buf->buf[iarg + 1] == 'T') {
1459: roff_setstrn(&r->strtab, ".T", 2, NULL, 0, 0);
1460: pos = iend;
1.253 schwarze 1461: continue;
1462: }
1.94 kristaps 1463:
1.388 schwarze 1464: mandoc_msg(MANDOCERR_STR_UNDEF, ln, iesc,
1465: "%.*s", iendarg - iarg, buf->buf + iarg);
1466: break;
1.108 schwarze 1467:
1.339 schwarze 1468: case '$':
1469: if (r->mstackpos < 0) {
1.388 schwarze 1470: mandoc_msg(MANDOCERR_ARG_UNDEF, ln, iesc,
1471: "%.*s", iend - iesc, buf->buf + iesc);
1.339 schwarze 1472: break;
1473: }
1474: ctx = r->mstack + r->mstackpos;
1.388 schwarze 1475: argi = buf->buf[iarg] - '1';
1476: if (argi >= 0 && argi <= 8) {
1477: if (argi < ctx->argc)
1478: res = ctx->argv[argi];
1.339 schwarze 1479: break;
1480: }
1.388 schwarze 1481: if (buf->buf[iarg] == '*')
1.339 schwarze 1482: quote_args = 0;
1.388 schwarze 1483: else if (buf->buf[iarg] == '@')
1.339 schwarze 1484: quote_args = 1;
1485: else {
1.388 schwarze 1486: mandoc_msg(MANDOCERR_ARG_NONUM, ln, iesc,
1487: "%.*s", iend - iesc, buf->buf + iesc);
1.339 schwarze 1488: break;
1489: }
1490: asz = 0;
1.388 schwarze 1491: for (argi = 0; argi < ctx->argc; argi++) {
1492: if (argi)
1.339 schwarze 1493: asz++; /* blank */
1494: if (quote_args)
1495: asz += 2; /* quotes */
1.388 schwarze 1496: asz += strlen(ctx->argv[argi]);
1.339 schwarze 1497: }
1.388 schwarze 1498: if (asz != iend - iesc) {
1499: rsz = buf->sz - iend;
1500: if (asz < iend - iesc)
1501: memmove(buf->buf + iesc + asz,
1502: buf->buf + iend, rsz);
1503: buf->sz = iesc + asz + rsz;
1504: buf->buf = mandoc_realloc(buf->buf, buf->sz);
1505: if (asz > iend - iesc)
1506: memmove(buf->buf + iesc + asz,
1507: buf->buf + iend, rsz);
1.339 schwarze 1508: }
1.388 schwarze 1509: dst = buf->buf + iesc;
1510: for (argi = 0; argi < ctx->argc; argi++) {
1511: if (argi)
1512: *dst++ = ' ';
1.339 schwarze 1513: if (quote_args)
1.388 schwarze 1514: *dst++ = '"';
1515: src = ctx->argv[argi];
1516: while (*src != '\0')
1517: *dst++ = *src++;
1.339 schwarze 1518: if (quote_args)
1.388 schwarze 1519: *dst++ = '"';
1.339 schwarze 1520: }
1521: continue;
1.391 schwarze 1522: case 'A':
1523: ubuf[0] = iendarg > iarg ? '1' : '0';
1524: ubuf[1] = '\0';
1525: res = ubuf;
1526: break;
1.207 schwarze 1527: case 'B':
1.206 schwarze 1528: npos = 0;
1.388 schwarze 1529: ubuf[0] = iendarg > iarg && iend > iendarg &&
1530: roff_evalnum(r, ln, buf->buf + iarg, &npos,
1531: NULL, ROFFNUM_SCALE) &&
1532: npos == iendarg - iarg ? '1' : '0';
1.206 schwarze 1533: ubuf[1] = '\0';
1.388 schwarze 1534: res = ubuf;
1.206 schwarze 1535: break;
1.389 schwarze 1536: case 'V':
1537: mandoc_msg(MANDOCERR_UNSUPP, ln, iesc,
1538: "%.*s", iend - iesc, buf->buf + iesc);
1539: roff_expand_patch(buf, iendarg, "}", iend);
1540: roff_expand_patch(buf, iesc, "${", iarg);
1541: continue;
1.390 schwarze 1542: case 'g':
1543: break;
1.207 schwarze 1544: case 'n':
1.388 schwarze 1545: if (iendarg > iarg)
1.218 schwarze 1546: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.388 schwarze 1547: roff_getregn(r, buf->buf + iarg,
1548: iendarg - iarg, buf->buf[inam + 1]));
1.218 schwarze 1549: else
1550: ubuf[0] = '\0';
1.388 schwarze 1551: res = ubuf;
1.206 schwarze 1552: break;
1.207 schwarze 1553: case 'w':
1.388 schwarze 1554: (void)snprintf(ubuf, sizeof(ubuf),
1555: "%d", (iendarg - iarg) * 24);
1556: res = ubuf;
1557: break;
1558: default:
1.206 schwarze 1559: break;
1560: }
1.388 schwarze 1561: if (res == NULL)
1.142 kristaps 1562: res = "";
1.388 schwarze 1563: if (++expand_count > EXPAND_LIMIT ||
1564: buf->sz + strlen(res) > SHRT_MAX) {
1565: mandoc_msg(MANDOCERR_ROFFLOOP, ln, iesc, NULL);
1.277 schwarze 1566: return ROFF_IGN;
1.94 kristaps 1567: }
1.388 schwarze 1568: roff_expand_patch(buf, iesc, res, iend);
1569: }
1570: return ROFF_CONT;
1571: }
1.94 kristaps 1572:
1.388 schwarze 1573: /*
1574: * Replace the substring from the start position (inclusive)
1575: * to end position (exclusive) with the repl(acement) string.
1576: */
1577: static void
1578: roff_expand_patch(struct buf *buf, int start, const char *repl, int end)
1579: {
1580: char *nbuf;
1.108 schwarze 1581:
1.389 schwarze 1582: buf->sz = mandoc_asprintf(&nbuf, "%.*s%s%s", start, buf->buf,
1583: repl, buf->buf + end) + 1;
1.388 schwarze 1584: free(buf->buf);
1585: buf->buf = nbuf;
1.154 kristaps 1586: }
1.353 schwarze 1587:
1588: /*
1589: * Parse a quoted or unquoted roff-style request or macro argument.
1590: * Return a pointer to the parsed argument, which is either the original
1591: * pointer or advanced by one byte in case the argument is quoted.
1592: * NUL-terminate the argument in place.
1593: * Collapse pairs of quotes inside quoted arguments.
1594: * Advance the argument pointer to the next argument,
1595: * or to the NUL byte terminating the argument line.
1596: */
1597: char *
1.355 schwarze 1598: roff_getarg(struct roff *r, char **cpp, int ln, int *pos)
1.353 schwarze 1599: {
1.355 schwarze 1600: struct buf buf;
1.366 schwarze 1601: char *cp, *start;
1.355 schwarze 1602: int newesc, pairs, quoted, white;
1.353 schwarze 1603:
1604: /* Quoting can only start with a new word. */
1605: start = *cpp;
1606: quoted = 0;
1607: if ('"' == *start) {
1608: quoted = 1;
1609: start++;
1610: }
1611:
1.355 schwarze 1612: newesc = pairs = white = 0;
1.353 schwarze 1613: for (cp = start; '\0' != *cp; cp++) {
1614:
1615: /*
1616: * Move the following text left
1617: * after quoted quotes and after "\\" and "\t".
1618: */
1619: if (pairs)
1620: cp[-pairs] = cp[0];
1621:
1622: if ('\\' == cp[0]) {
1623: /*
1624: * In copy mode, translate double to single
1625: * backslashes and backslash-t to literal tabs.
1626: */
1627: switch (cp[1]) {
1628: case 'a':
1629: case 't':
1.354 schwarze 1630: cp[-pairs] = '\t';
1.355 schwarze 1631: pairs++;
1632: cp++;
1633: break;
1.353 schwarze 1634: case '\\':
1.397 schwarze 1635: cp[-pairs] = '\\';
1.355 schwarze 1636: newesc = 1;
1.353 schwarze 1637: pairs++;
1638: cp++;
1639: break;
1640: case ' ':
1641: /* Skip escaped blanks. */
1642: if (0 == quoted)
1643: cp++;
1644: break;
1645: default:
1646: break;
1647: }
1648: } else if (0 == quoted) {
1649: if (' ' == cp[0]) {
1650: /* Unescaped blanks end unquoted args. */
1651: white = 1;
1652: break;
1653: }
1654: } else if ('"' == cp[0]) {
1655: if ('"' == cp[1]) {
1656: /* Quoted quotes collapse. */
1657: pairs++;
1658: cp++;
1659: } else {
1660: /* Unquoted quotes end quoted args. */
1661: quoted = 2;
1662: break;
1663: }
1664: }
1665: }
1666:
1667: /* Quoted argument without a closing quote. */
1668: if (1 == quoted)
1669: mandoc_msg(MANDOCERR_ARG_QUOTE, ln, *pos, NULL);
1670:
1671: /* NUL-terminate this argument and move to the next one. */
1672: if (pairs)
1673: cp[-pairs] = '\0';
1674: if ('\0' != *cp) {
1675: *cp++ = '\0';
1676: while (' ' == *cp)
1677: cp++;
1678: }
1679: *pos += (int)(cp - start) + (quoted ? 1 : 0);
1680: *cpp = cp;
1681:
1682: if ('\0' == *cp && (white || ' ' == cp[-1]))
1683: mandoc_msg(MANDOCERR_SPACE_EOL, ln, *pos, NULL);
1684:
1.355 schwarze 1685: start = mandoc_strdup(start);
1686: if (newesc == 0)
1687: return start;
1688:
1689: buf.buf = start;
1690: buf.sz = strlen(start) + 1;
1691: buf.next = NULL;
1.398 ! schwarze 1692: if (roff_expand(r, &buf, ln, 0, '\\') == ROFF_IGN) {
1.355 schwarze 1693: free(buf.buf);
1694: buf.buf = mandoc_strdup("");
1695: }
1696: return buf.buf;
1.353 schwarze 1697: }
1698:
1.154 kristaps 1699:
1700: /*
1.275 schwarze 1701: * Process text streams.
1.154 kristaps 1702: */
1.340 schwarze 1703: static int
1.305 schwarze 1704: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.154 kristaps 1705: {
1706: size_t sz;
1707: const char *start;
1.178 schwarze 1708: char *p;
1709: int isz;
1.154 kristaps 1710: enum mandoc_esc esc;
1711:
1.275 schwarze 1712: /* Spring the input line trap. */
1713:
1714: if (roffit_lines == 1) {
1715: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1716: free(buf->buf);
1717: buf->buf = p;
1718: buf->sz = isz + 1;
1719: *offs = 0;
1720: free(roffit_macro);
1721: roffit_lines = 0;
1.277 schwarze 1722: return ROFF_REPARSE;
1.275 schwarze 1723: } else if (roffit_lines > 1)
1724: --roffit_lines;
1725:
1.305 schwarze 1726: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1727: if (roffce_lines < 1) {
1728: r->man->last = roffce_node;
1729: r->man->next = ROFF_NEXT_SIBLING;
1730: roffce_lines = 0;
1731: roffce_node = NULL;
1732: } else
1733: roffce_lines--;
1734: }
1735:
1.275 schwarze 1736: /* Convert all breakable hyphens into ASCII_HYPH. */
1737:
1.238 schwarze 1738: start = p = buf->buf + pos;
1.154 kristaps 1739:
1.238 schwarze 1740: while (*p != '\0') {
1.154 kristaps 1741: sz = strcspn(p, "-\\");
1742: p += sz;
1743:
1.238 schwarze 1744: if (*p == '\0')
1.159 kristaps 1745: break;
1746:
1.238 schwarze 1747: if (*p == '\\') {
1.154 kristaps 1748: /* Skip over escapes. */
1749: p++;
1.189 schwarze 1750: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.238 schwarze 1751: if (esc == ESCAPE_ERROR)
1.154 kristaps 1752: break;
1.264 schwarze 1753: while (*p == '-')
1754: p++;
1.155 kristaps 1755: continue;
1.159 kristaps 1756: } else if (p == start) {
1.158 kristaps 1757: p++;
1.155 kristaps 1758: continue;
1.158 kristaps 1759: }
1.155 kristaps 1760:
1.171 schwarze 1761: if (isalpha((unsigned char)p[-1]) &&
1762: isalpha((unsigned char)p[1]))
1.155 kristaps 1763: *p = ASCII_HYPH;
1764: p++;
1.94 kristaps 1765: }
1.277 schwarze 1766: return ROFF_CONT;
1.94 kristaps 1767: }
1768:
1.340 schwarze 1769: int
1.377 schwarze 1770: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs, size_t len)
1.67 kristaps 1771: {
1.294 schwarze 1772: enum roff_tok t;
1.340 schwarze 1773: int e;
1.238 schwarze 1774: int pos; /* parse point */
1.243 schwarze 1775: int spos; /* saved parse point for messages */
1.238 schwarze 1776: int ppos; /* original offset in buf->buf */
1777: int ctl; /* macro line (boolean) */
1778:
1779: ppos = pos = *offs;
1.377 schwarze 1780:
1781: if (len > 80 && r->tbl == NULL && r->eqn == NULL &&
1782: (r->man->flags & ROFF_NOFILL) == 0 &&
1783: strchr(" .\\", buf->buf[pos]) == NULL &&
1784: buf->buf[pos] != r->control &&
1785: strcspn(buf->buf, " ") < 80)
1786: mandoc_msg(MANDOCERR_TEXT_LONG, ln, (int)len - 1,
1787: "%.20s...", buf->buf + pos);
1.79 kristaps 1788:
1.230 schwarze 1789: /* Handle in-line equation delimiters. */
1790:
1.236 schwarze 1791: if (r->tbl == NULL &&
1792: r->last_eqn != NULL && r->last_eqn->delim &&
1.230 schwarze 1793: (r->eqn == NULL || r->eqn_inline)) {
1.238 schwarze 1794: e = roff_eqndelim(r, buf, pos);
1.230 schwarze 1795: if (e == ROFF_REPARSE)
1.277 schwarze 1796: return e;
1.230 schwarze 1797: assert(e == ROFF_CONT);
1798: }
1799:
1.387 schwarze 1800: /* Handle comments and escape sequences. */
1801:
1802: e = roff_parse_comment(r, buf, ln, pos, r->escape);
1803: if ((e & ROFF_MASK) == ROFF_IGN)
1804: return e;
1805: assert(e == ROFF_CONT);
1.94 kristaps 1806:
1.355 schwarze 1807: e = roff_expand(r, buf, ln, pos, r->escape);
1.340 schwarze 1808: if ((e & ROFF_MASK) == ROFF_IGN)
1.277 schwarze 1809: return e;
1.238 schwarze 1810: assert(e == ROFF_CONT);
1.94 kristaps 1811:
1.238 schwarze 1812: ctl = roff_getcontrol(r, buf->buf, &pos);
1.130 kristaps 1813:
1.94 kristaps 1814: /*
1.79 kristaps 1815: * First, if a scope is open and we're not a macro, pass the
1.252 schwarze 1816: * text through the macro's filter.
1817: * Equations process all content themselves.
1818: * Tables process almost all content themselves, but we want
1819: * to warn about macros before passing it there.
1.79 kristaps 1820: */
1.74 kristaps 1821:
1.252 schwarze 1822: if (r->last != NULL && ! ctl) {
1.78 kristaps 1823: t = r->last->tok;
1.238 schwarze 1824: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.340 schwarze 1825: if ((e & ROFF_MASK) == ROFF_IGN)
1.277 schwarze 1826: return e;
1.340 schwarze 1827: e &= ~ROFF_MASK;
1828: } else
1829: e = ROFF_IGN;
1.319 schwarze 1830: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1831: eqn_read(r->eqn, buf->buf + ppos);
1.340 schwarze 1832: return e;
1.319 schwarze 1833: }
1.321 schwarze 1834: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1835: tbl_read(r->tbl, ln, buf->buf, ppos);
1.346 schwarze 1836: roff_addtbl(r->man, ln, r->tbl);
1.340 schwarze 1837: return e;
1.321 schwarze 1838: }
1.367 schwarze 1839: if ( ! ctl) {
1840: r->options &= ~MPARSE_COMMENT;
1.340 schwarze 1841: return roff_parsetext(r, buf, pos, offs) | e;
1.367 schwarze 1842: }
1.228 schwarze 1843:
1844: /* Skip empty request lines. */
1845:
1.238 schwarze 1846: if (buf->buf[pos] == '"') {
1.350 schwarze 1847: mandoc_msg(MANDOCERR_COMMENT_BAD, ln, pos, NULL);
1.277 schwarze 1848: return ROFF_IGN;
1.238 schwarze 1849: } else if (buf->buf[pos] == '\0')
1.277 schwarze 1850: return ROFF_IGN;
1.67 kristaps 1851:
1.79 kristaps 1852: /*
1853: * If a scope is open, go to the child handler for that macro,
1854: * as it may want to preprocess before doing anything with it.
1855: */
1.78 kristaps 1856:
1.79 kristaps 1857: if (r->last) {
1858: t = r->last->tok;
1.277 schwarze 1859: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1860: }
1.78 kristaps 1861:
1.367 schwarze 1862: r->options &= ~MPARSE_COMMENT;
1.243 schwarze 1863: spos = pos;
1864: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.386 schwarze 1865: return roff_req_or_macro(r, t, buf, ln, spos, pos, offs);
1866: }
1867:
1868: /*
1869: * Handle a new request or macro.
1870: * May be called outside any scope or from inside a conditional scope.
1871: */
1872: static int
1873: roff_req_or_macro(ROFF_ARGS) {
1.243 schwarze 1874:
1.386 schwarze 1875: /* For now, tables ignore most macros and some request. */
1.243 schwarze 1876:
1.386 schwarze 1877: if (r->tbl != NULL && (tok == TOKEN_NONE || tok == ROFF_TS ||
1878: tok == ROFF_br || tok == ROFF_ce || tok == ROFF_rj ||
1879: tok == ROFF_sp)) {
1.350 schwarze 1880: mandoc_msg(MANDOCERR_TBLMACRO,
1.386 schwarze 1881: ln, ppos, "%s", buf->buf + ppos);
1882: if (tok != TOKEN_NONE)
1.277 schwarze 1883: return ROFF_IGN;
1.257 schwarze 1884: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1885: pos++;
1.291 schwarze 1886: while (buf->buf[pos] == ' ')
1.257 schwarze 1887: pos++;
1.321 schwarze 1888: tbl_read(r->tbl, ln, buf->buf, pos);
1.346 schwarze 1889: roff_addtbl(r->man, ln, r->tbl);
1.321 schwarze 1890: return ROFF_IGN;
1.243 schwarze 1891: }
1892:
1.305 schwarze 1893: /* For now, let high level macros abort .ce mode. */
1894:
1.386 schwarze 1895: if (roffce_node != NULL &&
1896: (tok == TOKEN_NONE || tok == ROFF_Dd || tok == ROFF_EQ ||
1897: tok == ROFF_TH || tok == ROFF_TS)) {
1.305 schwarze 1898: r->man->last = roffce_node;
1899: r->man->next = ROFF_NEXT_SIBLING;
1900: roffce_lines = 0;
1901: roffce_node = NULL;
1902: }
1903:
1.79 kristaps 1904: /*
1.243 schwarze 1905: * This is neither a roff request nor a user-defined macro.
1906: * Let the standard macro set parsers handle it.
1.79 kristaps 1907: */
1.67 kristaps 1908:
1.386 schwarze 1909: if (tok == TOKEN_NONE)
1.277 schwarze 1910: return ROFF_CONT;
1.243 schwarze 1911:
1.386 schwarze 1912: /* Execute a roff request or a user-defined macro. */
1.67 kristaps 1913:
1.386 schwarze 1914: return (*roffs[tok].proc)(r, tok, buf, ln, ppos, pos, offs);
1.74 kristaps 1915: }
1916:
1.339 schwarze 1917: /*
1918: * Internal interface function to tell the roff parser that execution
1919: * of the current macro ended. This is required because macro
1920: * definitions usually do not end with a .return request.
1921: */
1922: void
1923: roff_userret(struct roff *r)
1924: {
1925: struct mctx *ctx;
1926: int i;
1927:
1928: assert(r->mstackpos >= 0);
1929: ctx = r->mstack + r->mstackpos;
1930: for (i = 0; i < ctx->argc; i++)
1931: free(ctx->argv[i]);
1932: ctx->argc = 0;
1933: r->mstackpos--;
1934: }
1935:
1.117 kristaps 1936: void
1.74 kristaps 1937: roff_endparse(struct roff *r)
1938: {
1.321 schwarze 1939: if (r->last != NULL)
1.350 schwarze 1940: mandoc_msg(MANDOCERR_BLK_NOEND, r->last->line,
1941: r->last->col, "%s", roff_name[r->last->tok]);
1.117 kristaps 1942:
1.321 schwarze 1943: if (r->eqn != NULL) {
1.350 schwarze 1944: mandoc_msg(MANDOCERR_BLK_NOEND,
1.319 schwarze 1945: r->eqn->node->line, r->eqn->node->pos, "EQ");
1946: eqn_parse(r->eqn);
1947: r->eqn = NULL;
1.125 kristaps 1948: }
1949:
1.321 schwarze 1950: if (r->tbl != NULL) {
1.346 schwarze 1951: tbl_end(r->tbl, 1);
1.321 schwarze 1952: r->tbl = NULL;
1.117 kristaps 1953: }
1.67 kristaps 1954: }
1955:
1956: /*
1.386 schwarze 1957: * Parse the request or macro name at buf[*pos].
1958: * Return ROFF_RENAMED, ROFF_USERDEF, or a ROFF_* token value.
1959: * For empty, undefined, mdoc(7), and man(7) macros, return TOKEN_NONE.
1960: * As a side effect, set r->current_string to the definition or to NULL.
1.67 kristaps 1961: */
1.294 schwarze 1962: static enum roff_tok
1.214 schwarze 1963: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.67 kristaps 1964: {
1.214 schwarze 1965: char *cp;
1.106 kristaps 1966: const char *mac;
1967: size_t maclen;
1.315 schwarze 1968: int deftype;
1.294 schwarze 1969: enum roff_tok t;
1.67 kristaps 1970:
1.214 schwarze 1971: cp = buf + *pos;
1972:
1973: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.294 schwarze 1974: return TOKEN_NONE;
1.67 kristaps 1975:
1.214 schwarze 1976: mac = cp;
1977: maclen = roff_getname(r, &cp, ln, ppos);
1.67 kristaps 1978:
1.315 schwarze 1979: deftype = ROFFDEF_USER | ROFFDEF_REN;
1980: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
1981: switch (deftype) {
1982: case ROFFDEF_USER:
1983: t = ROFF_USERDEF;
1984: break;
1985: case ROFFDEF_REN:
1986: t = ROFF_RENAMED;
1987: break;
1988: default:
1989: t = roffhash_find(r->reqtab, mac, maclen);
1990: break;
1991: }
1.294 schwarze 1992: if (t != TOKEN_NONE)
1.214 schwarze 1993: *pos = cp - buf;
1.325 schwarze 1994: else if (deftype == ROFFDEF_UNDEF) {
1995: /* Using an undefined macro defines it to be empty. */
1996: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
1997: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
1998: }
1.277 schwarze 1999: return t;
1.67 kristaps 2000: }
2001:
1.266 schwarze 2002: /* --- handling of request blocks ----------------------------------------- */
2003:
1.375 schwarze 2004: /*
2005: * Close a macro definition block or an "ignore" block.
2006: */
1.340 schwarze 2007: static int
1.76 kristaps 2008: roff_cblock(ROFF_ARGS)
1.67 kristaps 2009: {
1.375 schwarze 2010: int rr;
1.79 kristaps 2011:
1.238 schwarze 2012: if (r->last == NULL) {
1.350 schwarze 2013: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.277 schwarze 2014: return ROFF_IGN;
1.76 kristaps 2015: }
1.67 kristaps 2016:
1.81 kristaps 2017: switch (r->last->tok) {
1.207 schwarze 2018: case ROFF_am:
2019: case ROFF_ami:
2020: case ROFF_de:
2021: case ROFF_dei:
2022: case ROFF_ig:
1.81 kristaps 2023: break;
1.375 schwarze 2024: case ROFF_am1:
2025: case ROFF_de1:
2026: /* Remapped in roff_block(). */
2027: abort();
1.81 kristaps 2028: default:
1.350 schwarze 2029: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.277 schwarze 2030: return ROFF_IGN;
1.76 kristaps 2031: }
1.67 kristaps 2032:
1.375 schwarze 2033: roffnode_pop(r);
2034: roffnode_cleanscope(r);
2035:
2036: /*
2037: * If a conditional block with braces is still open,
2038: * check for "\}" block end markers.
2039: */
2040:
2041: if (r->last != NULL && r->last->endspan < 0) {
2042: rr = 1; /* If arguments follow "\}", warn about them. */
2043: roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
2044: }
2045:
1.238 schwarze 2046: if (buf->buf[pos] != '\0')
1.350 schwarze 2047: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.238 schwarze 2048: ".. %s", buf->buf + pos);
1.71 kristaps 2049:
1.277 schwarze 2050: return ROFF_IGN;
1.67 kristaps 2051: }
2052:
1.364 schwarze 2053: /*
2054: * Pop all nodes ending at the end of the current input line.
2055: * Return the number of loops ended.
2056: */
1.340 schwarze 2057: static int
1.76 kristaps 2058: roffnode_cleanscope(struct roff *r)
1.67 kristaps 2059: {
1.340 schwarze 2060: int inloop;
1.67 kristaps 2061:
1.340 schwarze 2062: inloop = 0;
1.375 schwarze 2063: while (r->last != NULL && r->last->endspan > 0) {
1.173 schwarze 2064: if (--r->last->endspan != 0)
1.76 kristaps 2065: break;
1.340 schwarze 2066: inloop += roffnode_pop(r);
1.76 kristaps 2067: }
1.340 schwarze 2068: return inloop;
1.67 kristaps 2069: }
2070:
1.364 schwarze 2071: /*
1.375 schwarze 2072: * Handle the closing "\}" of a conditional block.
1.364 schwarze 2073: * Apart from generating warnings, this only pops nodes.
2074: * Return the number of loops ended.
2075: */
1.340 schwarze 2076: static int
1.195 schwarze 2077: roff_ccond(struct roff *r, int ln, int ppos)
1.74 kristaps 2078: {
1.76 kristaps 2079: if (NULL == r->last) {
1.350 schwarze 2080: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 2081: return 0;
1.76 kristaps 2082: }
2083:
1.82 kristaps 2084: switch (r->last->tok) {
1.207 schwarze 2085: case ROFF_el:
2086: case ROFF_ie:
2087: case ROFF_if:
1.340 schwarze 2088: case ROFF_while:
1.82 kristaps 2089: break;
2090: default:
1.350 schwarze 2091: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 2092: return 0;
1.75 kristaps 2093: }
2094:
1.76 kristaps 2095: if (r->last->endspan > -1) {
1.350 schwarze 2096: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 2097: return 0;
1.76 kristaps 2098: }
2099:
1.340 schwarze 2100: return roffnode_pop(r) + roffnode_cleanscope(r);
1.76 kristaps 2101: }
2102:
1.340 schwarze 2103: static int
1.80 kristaps 2104: roff_block(ROFF_ARGS)
1.76 kristaps 2105: {
1.315 schwarze 2106: const char *name, *value;
2107: char *call, *cp, *iname, *rname;
2108: size_t csz, namesz, rsz;
2109: int deftype;
1.106 kristaps 2110:
1.220 schwarze 2111: /* Ignore groff compatibility mode for now. */
1.76 kristaps 2112:
1.238 schwarze 2113: if (tok == ROFF_de1)
1.220 schwarze 2114: tok = ROFF_de;
1.251 schwarze 2115: else if (tok == ROFF_dei1)
2116: tok = ROFF_dei;
1.238 schwarze 2117: else if (tok == ROFF_am1)
1.220 schwarze 2118: tok = ROFF_am;
1.251 schwarze 2119: else if (tok == ROFF_ami1)
2120: tok = ROFF_ami;
1.220 schwarze 2121:
2122: /* Parse the macro name argument. */
2123:
1.238 schwarze 2124: cp = buf->buf + pos;
2125: if (tok == ROFF_ig) {
1.220 schwarze 2126: iname = NULL;
2127: namesz = 0;
2128: } else {
2129: iname = cp;
2130: namesz = roff_getname(r, &cp, ln, ppos);
2131: iname[namesz] = '\0';
2132: }
1.107 kristaps 2133:
1.220 schwarze 2134: /* Resolve the macro name argument if it is indirect. */
1.107 kristaps 2135:
1.238 schwarze 2136: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 2137: deftype = ROFFDEF_USER;
2138: name = roff_getstrn(r, iname, namesz, &deftype);
2139: if (name == NULL) {
1.350 schwarze 2140: mandoc_msg(MANDOCERR_STR_UNDEF,
2141: ln, (int)(iname - buf->buf),
1.220 schwarze 2142: "%.*s", (int)namesz, iname);
2143: namesz = 0;
2144: } else
2145: namesz = strlen(name);
2146: } else
2147: name = iname;
1.107 kristaps 2148:
1.238 schwarze 2149: if (namesz == 0 && tok != ROFF_ig) {
1.350 schwarze 2150: mandoc_msg(MANDOCERR_REQ_EMPTY,
2151: ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2152: return ROFF_IGN;
1.220 schwarze 2153: }
1.80 kristaps 2154:
1.106 kristaps 2155: roffnode_push(r, tok, name, ln, ppos);
2156:
2157: /*
2158: * At the beginning of a `de' macro, clear the existing string
2159: * with the same name, if there is one. New content will be
1.193 schwarze 2160: * appended from roff_block_text() in multiline mode.
1.106 kristaps 2161: */
1.107 kristaps 2162:
1.311 schwarze 2163: if (tok == ROFF_de || tok == ROFF_dei) {
1.213 schwarze 2164: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.311 schwarze 2165: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.315 schwarze 2166: } else if (tok == ROFF_am || tok == ROFF_ami) {
2167: deftype = ROFFDEF_ANY;
2168: value = roff_getstrn(r, iname, namesz, &deftype);
2169: switch (deftype) { /* Before appending, ... */
2170: case ROFFDEF_PRE: /* copy predefined to user-defined. */
2171: roff_setstrn(&r->strtab, name, namesz,
2172: value, strlen(value), 0);
2173: break;
2174: case ROFFDEF_REN: /* call original standard macro. */
2175: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2176: (int)strlen(value), value);
2177: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2178: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
2179: free(call);
2180: break;
2181: case ROFFDEF_STD: /* rename and call standard macro. */
2182: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
2183: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
2184: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2185: (int)rsz, rname);
2186: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2187: free(call);
2188: free(rname);
2189: break;
2190: default:
2191: break;
2192: }
1.311 schwarze 2193: }
1.76 kristaps 2194:
1.238 schwarze 2195: if (*cp == '\0')
1.277 schwarze 2196: return ROFF_IGN;
1.78 kristaps 2197:
1.220 schwarze 2198: /* Get the custom end marker. */
1.107 kristaps 2199:
1.220 schwarze 2200: iname = cp;
1.213 schwarze 2201: namesz = roff_getname(r, &cp, ln, ppos);
1.220 schwarze 2202:
2203: /* Resolve the end marker if it is indirect. */
2204:
1.238 schwarze 2205: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 2206: deftype = ROFFDEF_USER;
2207: name = roff_getstrn(r, iname, namesz, &deftype);
2208: if (name == NULL) {
1.350 schwarze 2209: mandoc_msg(MANDOCERR_STR_UNDEF,
2210: ln, (int)(iname - buf->buf),
1.220 schwarze 2211: "%.*s", (int)namesz, iname);
2212: namesz = 0;
2213: } else
2214: namesz = strlen(name);
2215: } else
2216: name = iname;
2217:
1.213 schwarze 2218: if (namesz)
2219: r->last->end = mandoc_strndup(name, namesz);
1.78 kristaps 2220:
1.238 schwarze 2221: if (*cp != '\0')
1.350 schwarze 2222: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.295 schwarze 2223: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.74 kristaps 2224:
1.277 schwarze 2225: return ROFF_IGN;
1.78 kristaps 2226: }
2227:
1.340 schwarze 2228: static int
1.80 kristaps 2229: roff_block_sub(ROFF_ARGS)
1.79 kristaps 2230: {
1.294 schwarze 2231: enum roff_tok t;
1.79 kristaps 2232: int i, j;
2233:
2234: /*
1.385 schwarze 2235: * If a custom end marker is a user-defined or predefined macro
2236: * or a request, interpret it.
1.79 kristaps 2237: */
2238:
2239: if (r->last->end) {
1.130 kristaps 2240: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.238 schwarze 2241: if (buf->buf[i] != r->last->end[j])
1.79 kristaps 2242: break;
2243:
1.238 schwarze 2244: if (r->last->end[j] == '\0' &&
2245: (buf->buf[i] == '\0' ||
2246: buf->buf[i] == ' ' ||
2247: buf->buf[i] == '\t')) {
1.79 kristaps 2248: roffnode_pop(r);
2249: roffnode_cleanscope(r);
2250:
1.238 schwarze 2251: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.130 kristaps 2252: i++;
2253:
2254: pos = i;
1.238 schwarze 2255: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.294 schwarze 2256: TOKEN_NONE)
1.277 schwarze 2257: return ROFF_RERUN;
2258: return ROFF_IGN;
1.79 kristaps 2259: }
2260: }
2261:
1.385 schwarze 2262: /* Handle the standard end marker. */
1.79 kristaps 2263:
1.238 schwarze 2264: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.385 schwarze 2265: if (t == ROFF_cblock)
2266: return roff_cblock(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 2267:
1.385 schwarze 2268: /* Not an end marker, so append the line to the block. */
1.79 kristaps 2269:
1.385 schwarze 2270: if (tok != ROFF_ig)
2271: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
2272: return ROFF_IGN;
1.79 kristaps 2273: }
2274:
1.340 schwarze 2275: static int
1.80 kristaps 2276: roff_block_text(ROFF_ARGS)
1.78 kristaps 2277: {
2278:
1.238 schwarze 2279: if (tok != ROFF_ig)
2280: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.106 kristaps 2281:
1.277 schwarze 2282: return ROFF_IGN;
1.78 kristaps 2283: }
2284:
1.375 schwarze 2285: /*
2286: * Check for a closing "\}" and handle it.
2287: * In this function, the final "int *offs" argument is used for
2288: * different purposes than elsewhere:
2289: * Input: *offs == 0: caller wants to discard arguments following \}
2290: * *offs == 1: caller wants to preserve text following \}
2291: * Output: *offs = 0: tell caller to discard input line
2292: * *offs = 1: tell caller to use input line
2293: */
1.340 schwarze 2294: static int
1.375 schwarze 2295: roff_cond_checkend(ROFF_ARGS)
1.82 kristaps 2296: {
1.340 schwarze 2297: char *ep;
2298: int endloop, irc, rr;
1.82 kristaps 2299:
1.340 schwarze 2300: irc = ROFF_IGN;
1.82 kristaps 2301: rr = r->last->rule;
1.340 schwarze 2302: endloop = tok != ROFF_while ? ROFF_IGN :
2303: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2304: if (roffnode_cleanscope(r))
2305: irc |= endloop;
1.144 kristaps 2306:
1.196 schwarze 2307: /*
1.375 schwarze 2308: * If "\}" occurs on a macro line without a preceding macro or
2309: * a text line contains nothing else, drop the line completely.
1.196 schwarze 2310: */
2311:
1.238 schwarze 2312: ep = buf->buf + pos;
1.375 schwarze 2313: if (ep[0] == '\\' && ep[1] == '}' && (ep[2] == '\0' || *offs == 0))
1.198 schwarze 2314: rr = 0;
1.196 schwarze 2315:
1.343 schwarze 2316: /*
1.375 schwarze 2317: * The closing delimiter "\}" rewinds the conditional scope
1.343 schwarze 2318: * but is otherwise ignored when interpreting the line.
2319: */
1.144 kristaps 2320:
1.238 schwarze 2321: while ((ep = strchr(ep, '\\')) != NULL) {
1.318 schwarze 2322: switch (ep[1]) {
2323: case '}':
1.376 schwarze 2324: if (ep[2] == '\0')
2325: ep[0] = '\0';
2326: else if (rr)
1.375 schwarze 2327: ep[1] = '&';
2328: else
2329: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1.340 schwarze 2330: if (roff_ccond(r, ln, ep - buf->buf))
2331: irc |= endloop;
1.318 schwarze 2332: break;
2333: case '\0':
2334: ++ep;
2335: break;
2336: default:
2337: ep += 2;
2338: break;
1.197 schwarze 2339: }
1.177 schwarze 2340: }
1.375 schwarze 2341: *offs = rr;
2342: return irc;
2343: }
1.318 schwarze 2344:
1.375 schwarze 2345: /*
2346: * Parse and process a request or macro line in conditional scope.
2347: */
2348: static int
2349: roff_cond_sub(ROFF_ARGS)
2350: {
2351: struct roffnode *bl;
1.386 schwarze 2352: int irc, rr, spos;
1.375 schwarze 2353: enum roff_tok t;
2354:
2355: rr = 0; /* If arguments follow "\}", skip them. */
2356: irc = roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
1.386 schwarze 2357: spos = pos;
1.368 schwarze 2358: t = roff_parse(r, buf->buf, &pos, ln, ppos);
2359:
1.318 schwarze 2360: /*
1.386 schwarze 2361: * Handle requests and macros if the conditional evaluated
2362: * to true or if they are structurally required.
2363: * The .break request is always handled specially.
1.318 schwarze 2364: */
2365:
1.364 schwarze 2366: if (t == ROFF_break) {
2367: if (irc & ROFF_LOOPMASK)
2368: irc = ROFF_IGN | ROFF_LOOPEXIT;
2369: else if (rr) {
2370: for (bl = r->last; bl != NULL; bl = bl->parent) {
2371: bl->rule = 0;
2372: if (bl->tok == ROFF_while)
2373: break;
2374: }
2375: }
1.386 schwarze 2376: } else if (rr || (t < TOKEN_NONE && roffs[t].flags & ROFFMAC_STRUCT)) {
2377: irc |= roff_req_or_macro(r, t, buf, ln, spos, pos, offs);
1.383 schwarze 2378: if (irc & ROFF_WHILE)
2379: irc &= ~(ROFF_LOOPCONT | ROFF_LOOPEXIT);
1.386 schwarze 2380: }
1.340 schwarze 2381: return irc;
1.82 kristaps 2382: }
2383:
1.375 schwarze 2384: /*
2385: * Parse and process a text line in conditional scope.
2386: */
1.340 schwarze 2387: static int
1.82 kristaps 2388: roff_cond_text(ROFF_ARGS)
1.78 kristaps 2389: {
1.375 schwarze 2390: int irc, rr;
1.343 schwarze 2391:
1.375 schwarze 2392: rr = 1; /* If arguments follow "\}", preserve them. */
2393: irc = roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
1.340 schwarze 2394: if (rr)
2395: irc |= ROFF_CONT;
2396: return irc;
1.74 kristaps 2397: }
2398:
1.266 schwarze 2399: /* --- handling of numeric and conditional expressions -------------------- */
2400:
1.204 schwarze 2401: /*
2402: * Parse a single signed integer number. Stop at the first non-digit.
2403: * If there is at least one digit, return success and advance the
2404: * parse point, else return failure and let the parse point unchanged.
2405: * Ignore overflows, treat them just like the C language.
2406: */
1.184 schwarze 2407: static int
1.261 schwarze 2408: roff_getnum(const char *v, int *pos, int *res, int flags)
1.184 schwarze 2409: {
1.261 schwarze 2410: int myres, scaled, n, p;
1.206 schwarze 2411:
2412: if (NULL == res)
2413: res = &myres;
1.184 schwarze 2414:
2415: p = *pos;
2416: n = v[p] == '-';
1.261 schwarze 2417: if (n || v[p] == '+')
1.184 schwarze 2418: p++;
2419:
1.261 schwarze 2420: if (flags & ROFFNUM_WHITE)
2421: while (isspace((unsigned char)v[p]))
2422: p++;
2423:
1.184 schwarze 2424: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.204 schwarze 2425: *res = 10 * *res + v[p] - '0';
1.184 schwarze 2426: if (p == *pos + n)
2427: return 0;
2428:
2429: if (n)
2430: *res = -*res;
2431:
1.254 schwarze 2432: /* Each number may be followed by one optional scaling unit. */
2433:
2434: switch (v[p]) {
2435: case 'f':
1.261 schwarze 2436: scaled = *res * 65536;
1.254 schwarze 2437: break;
2438: case 'i':
1.261 schwarze 2439: scaled = *res * 240;
1.254 schwarze 2440: break;
2441: case 'c':
1.261 schwarze 2442: scaled = *res * 240 / 2.54;
1.254 schwarze 2443: break;
2444: case 'v':
2445: case 'P':
1.261 schwarze 2446: scaled = *res * 40;
1.254 schwarze 2447: break;
2448: case 'm':
2449: case 'n':
1.261 schwarze 2450: scaled = *res * 24;
1.254 schwarze 2451: break;
2452: case 'p':
1.261 schwarze 2453: scaled = *res * 10 / 3;
1.254 schwarze 2454: break;
2455: case 'u':
1.261 schwarze 2456: scaled = *res;
1.254 schwarze 2457: break;
2458: case 'M':
1.261 schwarze 2459: scaled = *res * 6 / 25;
1.254 schwarze 2460: break;
2461: default:
1.261 schwarze 2462: scaled = *res;
1.254 schwarze 2463: p--;
2464: break;
2465: }
1.261 schwarze 2466: if (flags & ROFFNUM_SCALE)
2467: *res = scaled;
1.254 schwarze 2468:
2469: *pos = p + 1;
1.277 schwarze 2470: return 1;
1.184 schwarze 2471: }
2472:
1.198 schwarze 2473: /*
2474: * Evaluate a string comparison condition.
2475: * The first character is the delimiter.
2476: * Succeed if the string up to its second occurrence
1.396 schwarze 2477: * matches the string up to its third occurrence.
1.198 schwarze 2478: * Advance the cursor after the third occurrence
2479: * or lacking that, to the end of the line.
2480: */
2481: static int
2482: roff_evalstrcond(const char *v, int *pos)
2483: {
2484: const char *s1, *s2, *s3;
2485: int match;
2486:
2487: match = 0;
2488: s1 = v + *pos; /* initial delimiter */
2489: s2 = s1 + 1; /* for scanning the first string */
2490: s3 = strchr(s2, *s1); /* for scanning the second string */
2491:
2492: if (NULL == s3) /* found no middle delimiter */
2493: goto out;
2494:
2495: while ('\0' != *++s3) {
2496: if (*s2 != *s3) { /* mismatch */
2497: s3 = strchr(s3, *s1);
2498: break;
2499: }
2500: if (*s3 == *s1) { /* found the final delimiter */
2501: match = 1;
2502: break;
2503: }
2504: s2++;
2505: }
2506:
2507: out:
2508: if (NULL == s3)
2509: s3 = strchr(s2, '\0');
1.242 schwarze 2510: else if (*s3 != '\0')
1.198 schwarze 2511: s3++;
2512: *pos = s3 - v;
1.277 schwarze 2513: return match;
1.198 schwarze 2514: }
2515:
1.204 schwarze 2516: /*
2517: * Evaluate an optionally negated single character, numerical,
2518: * or string condition.
2519: */
1.198 schwarze 2520: static int
1.271 schwarze 2521: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.88 kristaps 2522: {
1.336 schwarze 2523: const char *start, *end;
2524: char *cp, *name;
2525: size_t sz;
2526: int deftype, len, number, savepos, istrue, wanttrue;
1.88 kristaps 2527:
1.198 schwarze 2528: if ('!' == v[*pos]) {
2529: wanttrue = 0;
2530: (*pos)++;
2531: } else
2532: wanttrue = 1;
2533:
1.88 kristaps 2534: switch (v[*pos]) {
1.240 schwarze 2535: case '\0':
1.277 schwarze 2536: return 0;
1.207 schwarze 2537: case 'n':
2538: case 'o':
1.88 kristaps 2539: (*pos)++;
1.277 schwarze 2540: return wanttrue;
1.207 schwarze 2541: case 'e':
2542: case 't':
1.239 schwarze 2543: case 'v':
1.88 kristaps 2544: (*pos)++;
1.277 schwarze 2545: return !wanttrue;
1.336 schwarze 2546: case 'c':
2547: do {
2548: (*pos)++;
2549: } while (v[*pos] == ' ');
2550:
2551: /*
2552: * Quirk for groff compatibility:
2553: * The horizontal tab is neither available nor unavailable.
2554: */
2555:
2556: if (v[*pos] == '\t') {
2557: (*pos)++;
2558: return 0;
2559: }
2560:
2561: /* Printable ASCII characters are available. */
2562:
2563: if (v[*pos] != '\\') {
2564: (*pos)++;
2565: return wanttrue;
2566: }
2567:
2568: end = v + ++*pos;
2569: switch (mandoc_escape(&end, &start, &len)) {
2570: case ESCAPE_SPECIAL:
2571: istrue = mchars_spec2cp(start, len) != -1;
2572: break;
2573: case ESCAPE_UNICODE:
2574: istrue = 1;
2575: break;
2576: case ESCAPE_NUMBERED:
2577: istrue = mchars_num2char(start, len) != -1;
2578: break;
2579: default:
2580: istrue = !wanttrue;
2581: break;
2582: }
2583: *pos = end - v;
2584: return istrue == wanttrue;
1.310 schwarze 2585: case 'd':
1.271 schwarze 2586: case 'r':
1.310 schwarze 2587: cp = v + *pos + 1;
2588: while (*cp == ' ')
2589: cp++;
2590: name = cp;
2591: sz = roff_getname(r, &cp, ln, cp - v);
1.315 schwarze 2592: if (sz == 0)
2593: istrue = 0;
2594: else if (v[*pos] == 'r')
2595: istrue = roff_hasregn(r, name, sz);
2596: else {
2597: deftype = ROFFDEF_ANY;
2598: roff_getstrn(r, name, sz, &deftype);
2599: istrue = !!deftype;
2600: }
1.363 schwarze 2601: *pos = (name + sz) - v;
1.310 schwarze 2602: return istrue == wanttrue;
1.88 kristaps 2603: default:
2604: break;
2605: }
2606:
1.241 schwarze 2607: savepos = *pos;
1.261 schwarze 2608: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.277 schwarze 2609: return (number > 0) == wanttrue;
1.241 schwarze 2610: else if (*pos == savepos)
1.277 schwarze 2611: return roff_evalstrcond(v, pos) == wanttrue;
1.204 schwarze 2612: else
1.277 schwarze 2613: return 0;
1.88 kristaps 2614: }
2615:
1.340 schwarze 2616: static int
1.103 kristaps 2617: roff_line_ignore(ROFF_ARGS)
1.89 kristaps 2618: {
1.123 schwarze 2619:
1.277 schwarze 2620: return ROFF_IGN;
1.89 kristaps 2621: }
2622:
1.340 schwarze 2623: static int
1.251 schwarze 2624: roff_insec(ROFF_ARGS)
2625: {
2626:
1.350 schwarze 2627: mandoc_msg(MANDOCERR_REQ_INSEC, ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2628: return ROFF_IGN;
1.251 schwarze 2629: }
2630:
1.340 schwarze 2631: static int
1.251 schwarze 2632: roff_unsupp(ROFF_ARGS)
2633: {
2634:
1.350 schwarze 2635: mandoc_msg(MANDOCERR_REQ_UNSUPP, ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2636: return ROFF_IGN;
1.251 schwarze 2637: }
2638:
1.340 schwarze 2639: static int
1.82 kristaps 2640: roff_cond(ROFF_ARGS)
1.74 kristaps 2641: {
1.340 schwarze 2642: int irc;
1.173 schwarze 2643:
2644: roffnode_push(r, tok, NULL, ln, ppos);
1.74 kristaps 2645:
1.207 schwarze 2646: /*
1.134 kristaps 2647: * An `.el' has no conditional body: it will consume the value
2648: * of the current rstack entry set in prior `ie' calls or
1.207 schwarze 2649: * defaults to DENY.
1.134 kristaps 2650: *
2651: * If we're not an `el', however, then evaluate the conditional.
2652: */
1.133 kristaps 2653:
1.238 schwarze 2654: r->last->rule = tok == ROFF_el ?
1.207 schwarze 2655: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.238 schwarze 2656: roff_evalcond(r, ln, buf->buf, &pos);
1.77 kristaps 2657:
1.134 kristaps 2658: /*
2659: * An if-else will put the NEGATION of the current evaluated
2660: * conditional into the stack of rules.
2661: */
2662:
1.238 schwarze 2663: if (tok == ROFF_ie) {
1.223 schwarze 2664: if (r->rstackpos + 1 == r->rstacksz) {
2665: r->rstacksz += 16;
2666: r->rstack = mandoc_reallocarray(r->rstack,
2667: r->rstacksz, sizeof(int));
1.134 kristaps 2668: }
1.198 schwarze 2669: r->rstack[++r->rstackpos] = !r->last->rule;
1.82 kristaps 2670: }
1.88 kristaps 2671:
2672: /* If the parent has false as its rule, then so do we. */
2673:
1.198 schwarze 2674: if (r->last->parent && !r->last->parent->rule)
2675: r->last->rule = 0;
1.88 kristaps 2676:
2677: /*
1.173 schwarze 2678: * Determine scope.
2679: * If there is nothing on the line after the conditional,
2680: * not even whitespace, use next-line scope.
1.340 schwarze 2681: * Except that .while does not support next-line scope.
1.88 kristaps 2682: */
1.74 kristaps 2683:
1.340 schwarze 2684: if (buf->buf[pos] == '\0' && tok != ROFF_while) {
1.173 schwarze 2685: r->last->endspan = 2;
2686: goto out;
2687: }
2688:
1.238 schwarze 2689: while (buf->buf[pos] == ' ')
1.173 schwarze 2690: pos++;
2691:
2692: /* An opening brace requests multiline scope. */
1.75 kristaps 2693:
1.238 schwarze 2694: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.75 kristaps 2695: r->last->endspan = -1;
2696: pos += 2;
1.272 schwarze 2697: while (buf->buf[pos] == ' ')
2698: pos++;
1.173 schwarze 2699: goto out;
1.207 schwarze 2700: }
1.74 kristaps 2701:
1.77 kristaps 2702: /*
1.173 schwarze 2703: * Anything else following the conditional causes
2704: * single-line scope. Warn if the scope contains
2705: * nothing but trailing whitespace.
1.77 kristaps 2706: */
2707:
1.238 schwarze 2708: if (buf->buf[pos] == '\0')
1.350 schwarze 2709: mandoc_msg(MANDOCERR_COND_EMPTY,
2710: ln, ppos, "%s", roff_name[tok]);
1.77 kristaps 2711:
1.173 schwarze 2712: r->last->endspan = 1;
1.74 kristaps 2713:
1.173 schwarze 2714: out:
1.75 kristaps 2715: *offs = pos;
1.340 schwarze 2716: irc = ROFF_RERUN;
2717: if (tok == ROFF_while)
2718: irc |= ROFF_WHILE;
2719: return irc;
1.83 schwarze 2720: }
2721:
1.340 schwarze 2722: static int
1.92 schwarze 2723: roff_ds(ROFF_ARGS)
2724: {
1.212 schwarze 2725: char *string;
2726: const char *name;
2727: size_t namesz;
1.96 kristaps 2728:
1.251 schwarze 2729: /* Ignore groff compatibility mode for now. */
2730:
2731: if (tok == ROFF_ds1)
2732: tok = ROFF_ds;
2733: else if (tok == ROFF_as1)
2734: tok = ROFF_as;
2735:
1.96 kristaps 2736: /*
1.212 schwarze 2737: * The first word is the name of the string.
2738: * If it is empty or terminated by an escape sequence,
2739: * abort the `ds' request without defining anything.
1.96 kristaps 2740: */
1.92 schwarze 2741:
1.238 schwarze 2742: name = string = buf->buf + pos;
2743: if (*name == '\0')
1.277 schwarze 2744: return ROFF_IGN;
1.92 schwarze 2745:
1.212 schwarze 2746: namesz = roff_getname(r, &string, ln, pos);
1.363 schwarze 2747: switch (name[namesz]) {
2748: case '\\':
1.277 schwarze 2749: return ROFF_IGN;
1.363 schwarze 2750: case '\t':
2751: string = buf->buf + pos + namesz;
2752: break;
2753: default:
2754: break;
2755: }
1.212 schwarze 2756:
2757: /* Read past the initial double-quote, if any. */
1.238 schwarze 2758: if (*string == '"')
1.92 schwarze 2759: string++;
2760:
1.96 kristaps 2761: /* The rest is the value. */
1.212 schwarze 2762: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2763: ROFF_as == tok);
1.311 schwarze 2764: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.277 schwarze 2765: return ROFF_IGN;
1.92 schwarze 2766: }
2767:
1.204 schwarze 2768: /*
2769: * Parse a single operator, one or two characters long.
2770: * If the operator is recognized, return success and advance the
2771: * parse point, else return failure and let the parse point unchanged.
2772: */
2773: static int
2774: roff_getop(const char *v, int *pos, char *res)
2775: {
2776:
2777: *res = v[*pos];
2778:
2779: switch (*res) {
1.207 schwarze 2780: case '+':
2781: case '-':
2782: case '*':
2783: case '/':
2784: case '%':
2785: case '&':
2786: case ':':
1.204 schwarze 2787: break;
2788: case '<':
2789: switch (v[*pos + 1]) {
1.207 schwarze 2790: case '=':
1.204 schwarze 2791: *res = 'l';
2792: (*pos)++;
2793: break;
1.207 schwarze 2794: case '>':
1.204 schwarze 2795: *res = '!';
2796: (*pos)++;
2797: break;
1.207 schwarze 2798: case '?':
1.204 schwarze 2799: *res = 'i';
2800: (*pos)++;
2801: break;
2802: default:
2803: break;
2804: }
2805: break;
2806: case '>':
2807: switch (v[*pos + 1]) {
1.207 schwarze 2808: case '=':
1.204 schwarze 2809: *res = 'g';
2810: (*pos)++;
2811: break;
1.207 schwarze 2812: case '?':
1.204 schwarze 2813: *res = 'a';
2814: (*pos)++;
2815: break;
2816: default:
2817: break;
2818: }
2819: break;
2820: case '=':
2821: if ('=' == v[*pos + 1])
2822: (*pos)++;
2823: break;
2824: default:
1.277 schwarze 2825: return 0;
1.204 schwarze 2826: }
2827: (*pos)++;
2828:
1.277 schwarze 2829: return *res;
1.204 schwarze 2830: }
2831:
2832: /*
2833: * Evaluate either a parenthesized numeric expression
2834: * or a single signed integer number.
2835: */
2836: static int
1.235 schwarze 2837: roff_evalpar(struct roff *r, int ln,
1.261 schwarze 2838: const char *v, int *pos, int *res, int flags)
1.204 schwarze 2839: {
2840:
2841: if ('(' != v[*pos])
1.277 schwarze 2842: return roff_getnum(v, pos, res, flags);
1.204 schwarze 2843:
2844: (*pos)++;
1.261 schwarze 2845: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.277 schwarze 2846: return 0;
1.204 schwarze 2847:
1.206 schwarze 2848: /*
2849: * Omission of the closing parenthesis
2850: * is an error in validation mode,
2851: * but ignored in evaluation mode.
2852: */
2853:
1.204 schwarze 2854: if (')' == v[*pos])
2855: (*pos)++;
1.206 schwarze 2856: else if (NULL == res)
1.277 schwarze 2857: return 0;
1.204 schwarze 2858:
1.277 schwarze 2859: return 1;
1.204 schwarze 2860: }
2861:
2862: /*
2863: * Evaluate a complete numeric expression.
2864: * Proceed left to right, there is no concept of precedence.
2865: */
2866: static int
1.235 schwarze 2867: roff_evalnum(struct roff *r, int ln, const char *v,
1.261 schwarze 2868: int *pos, int *res, int flags)
1.204 schwarze 2869: {
2870: int mypos, operand2;
2871: char operator;
2872:
2873: if (NULL == pos) {
2874: mypos = 0;
2875: pos = &mypos;
2876: }
2877:
1.261 schwarze 2878: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2879: while (isspace((unsigned char)v[*pos]))
2880: (*pos)++;
2881:
1.261 schwarze 2882: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.277 schwarze 2883: return 0;
1.204 schwarze 2884:
2885: while (1) {
1.261 schwarze 2886: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2887: while (isspace((unsigned char)v[*pos]))
2888: (*pos)++;
2889:
2890: if ( ! roff_getop(v, pos, &operator))
2891: break;
2892:
1.261 schwarze 2893: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2894: while (isspace((unsigned char)v[*pos]))
2895: (*pos)++;
2896:
1.261 schwarze 2897: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.277 schwarze 2898: return 0;
1.204 schwarze 2899:
1.261 schwarze 2900: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2901: while (isspace((unsigned char)v[*pos]))
2902: (*pos)++;
1.206 schwarze 2903:
2904: if (NULL == res)
2905: continue;
1.204 schwarze 2906:
2907: switch (operator) {
1.207 schwarze 2908: case '+':
1.204 schwarze 2909: *res += operand2;
2910: break;
1.207 schwarze 2911: case '-':
1.204 schwarze 2912: *res -= operand2;
2913: break;
1.207 schwarze 2914: case '*':
1.204 schwarze 2915: *res *= operand2;
2916: break;
1.207 schwarze 2917: case '/':
1.244 schwarze 2918: if (operand2 == 0) {
1.235 schwarze 2919: mandoc_msg(MANDOCERR_DIVZERO,
1.350 schwarze 2920: ln, *pos, "%s", v);
1.234 kristaps 2921: *res = 0;
2922: break;
2923: }
1.204 schwarze 2924: *res /= operand2;
2925: break;
1.207 schwarze 2926: case '%':
1.244 schwarze 2927: if (operand2 == 0) {
2928: mandoc_msg(MANDOCERR_DIVZERO,
1.350 schwarze 2929: ln, *pos, "%s", v);
1.244 schwarze 2930: *res = 0;
2931: break;
2932: }
1.204 schwarze 2933: *res %= operand2;
2934: break;
1.207 schwarze 2935: case '<':
1.204 schwarze 2936: *res = *res < operand2;
2937: break;
1.207 schwarze 2938: case '>':
1.204 schwarze 2939: *res = *res > operand2;
2940: break;
1.207 schwarze 2941: case 'l':
1.204 schwarze 2942: *res = *res <= operand2;
2943: break;
1.207 schwarze 2944: case 'g':
1.204 schwarze 2945: *res = *res >= operand2;
2946: break;
1.207 schwarze 2947: case '=':
1.204 schwarze 2948: *res = *res == operand2;
2949: break;
1.207 schwarze 2950: case '!':
1.204 schwarze 2951: *res = *res != operand2;
2952: break;
1.207 schwarze 2953: case '&':
1.204 schwarze 2954: *res = *res && operand2;
2955: break;
1.207 schwarze 2956: case ':':
1.204 schwarze 2957: *res = *res || operand2;
2958: break;
1.207 schwarze 2959: case 'i':
1.204 schwarze 2960: if (operand2 < *res)
2961: *res = operand2;
2962: break;
1.207 schwarze 2963: case 'a':
1.204 schwarze 2964: if (operand2 > *res)
2965: *res = operand2;
2966: break;
2967: default:
2968: abort();
2969: }
2970: }
1.277 schwarze 2971: return 1;
1.204 schwarze 2972: }
2973:
1.266 schwarze 2974: /* --- register management ------------------------------------------------ */
2975:
1.180 schwarze 2976: void
1.187 schwarze 2977: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.147 kristaps 2978: {
1.327 schwarze 2979: roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
1.326 schwarze 2980: }
2981:
2982: static void
2983: roff_setregn(struct roff *r, const char *name, size_t len,
1.327 schwarze 2984: int val, char sign, int step)
1.326 schwarze 2985: {
1.180 schwarze 2986: struct roffreg *reg;
2987:
2988: /* Search for an existing register with the same name. */
2989: reg = r->regtab;
2990:
1.326 schwarze 2991: while (reg != NULL && (reg->key.sz != len ||
2992: strncmp(reg->key.p, name, len) != 0))
1.180 schwarze 2993: reg = reg->next;
1.147 kristaps 2994:
1.180 schwarze 2995: if (NULL == reg) {
2996: /* Create a new register. */
2997: reg = mandoc_malloc(sizeof(struct roffreg));
1.326 schwarze 2998: reg->key.p = mandoc_strndup(name, len);
2999: reg->key.sz = len;
1.187 schwarze 3000: reg->val = 0;
1.327 schwarze 3001: reg->step = 0;
1.180 schwarze 3002: reg->next = r->regtab;
3003: r->regtab = reg;
3004: }
3005:
1.187 schwarze 3006: if ('+' == sign)
3007: reg->val += val;
3008: else if ('-' == sign)
3009: reg->val -= val;
3010: else
3011: reg->val = val;
1.327 schwarze 3012: if (step != INT_MIN)
3013: reg->step = step;
1.147 kristaps 3014: }
3015:
1.192 schwarze 3016: /*
3017: * Handle some predefined read-only number registers.
3018: * For now, return -1 if the requested register is not predefined;
3019: * in case a predefined read-only register having the value -1
3020: * were to turn up, another special value would have to be chosen.
3021: */
3022: static int
1.273 schwarze 3023: roff_getregro(const struct roff *r, const char *name)
1.192 schwarze 3024: {
3025:
3026: switch (*name) {
1.273 schwarze 3027: case '$': /* Number of arguments of the last macro evaluated. */
1.339 schwarze 3028: return r->mstackpos < 0 ? 0 : r->mstack[r->mstackpos].argc;
1.207 schwarze 3029: case 'A': /* ASCII approximation mode is always off. */
1.277 schwarze 3030: return 0;
1.207 schwarze 3031: case 'g': /* Groff compatibility mode is always on. */
1.277 schwarze 3032: return 1;
1.207 schwarze 3033: case 'H': /* Fixed horizontal resolution. */
1.277 schwarze 3034: return 24;
1.207 schwarze 3035: case 'j': /* Always adjust left margin only. */
1.277 schwarze 3036: return 0;
1.207 schwarze 3037: case 'T': /* Some output device is always defined. */
1.277 schwarze 3038: return 1;
1.207 schwarze 3039: case 'V': /* Fixed vertical resolution. */
1.277 schwarze 3040: return 40;
1.192 schwarze 3041: default:
1.277 schwarze 3042: return -1;
1.192 schwarze 3043: }
3044: }
3045:
1.181 schwarze 3046: int
1.326 schwarze 3047: roff_getreg(struct roff *r, const char *name)
1.147 kristaps 3048: {
1.327 schwarze 3049: return roff_getregn(r, name, strlen(name), '\0');
1.181 schwarze 3050: }
3051:
3052: static int
1.327 schwarze 3053: roff_getregn(struct roff *r, const char *name, size_t len, char sign)
1.181 schwarze 3054: {
3055: struct roffreg *reg;
1.192 schwarze 3056: int val;
3057:
3058: if ('.' == name[0] && 2 == len) {
1.273 schwarze 3059: val = roff_getregro(r, name + 1);
1.192 schwarze 3060: if (-1 != val)
1.277 schwarze 3061: return val;
1.192 schwarze 3062: }
1.181 schwarze 3063:
1.327 schwarze 3064: for (reg = r->regtab; reg; reg = reg->next) {
1.181 schwarze 3065: if (len == reg->key.sz &&
1.327 schwarze 3066: 0 == strncmp(name, reg->key.p, len)) {
3067: switch (sign) {
3068: case '+':
3069: reg->val += reg->step;
3070: break;
3071: case '-':
3072: reg->val -= reg->step;
3073: break;
3074: default:
3075: break;
3076: }
1.277 schwarze 3077: return reg->val;
1.327 schwarze 3078: }
3079: }
1.271 schwarze 3080:
1.327 schwarze 3081: roff_setregn(r, name, len, 0, '\0', INT_MIN);
1.277 schwarze 3082: return 0;
1.271 schwarze 3083: }
3084:
3085: static int
3086: roff_hasregn(const struct roff *r, const char *name, size_t len)
3087: {
3088: struct roffreg *reg;
3089: int val;
3090:
3091: if ('.' == name[0] && 2 == len) {
1.273 schwarze 3092: val = roff_getregro(r, name + 1);
1.271 schwarze 3093: if (-1 != val)
1.277 schwarze 3094: return 1;
1.271 schwarze 3095: }
3096:
3097: for (reg = r->regtab; reg; reg = reg->next)
3098: if (len == reg->key.sz &&
3099: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 3100: return 1;
1.147 kristaps 3101:
1.277 schwarze 3102: return 0;
1.147 kristaps 3103: }
3104:
1.180 schwarze 3105: static void
3106: roff_freereg(struct roffreg *reg)
1.147 kristaps 3107: {
1.180 schwarze 3108: struct roffreg *old_reg;
1.147 kristaps 3109:
1.180 schwarze 3110: while (NULL != reg) {
3111: free(reg->key.p);
3112: old_reg = reg;
3113: reg = reg->next;
3114: free(old_reg);
3115: }
1.147 kristaps 3116: }
1.92 schwarze 3117:
1.340 schwarze 3118: static int
1.89 kristaps 3119: roff_nr(ROFF_ARGS)
1.83 schwarze 3120: {
1.327 schwarze 3121: char *key, *val, *step;
1.212 schwarze 3122: size_t keysz;
1.327 schwarze 3123: int iv, is, len;
1.187 schwarze 3124: char sign;
1.89 kristaps 3125:
1.238 schwarze 3126: key = val = buf->buf + pos;
3127: if (*key == '\0')
1.277 schwarze 3128: return ROFF_IGN;
1.212 schwarze 3129:
3130: keysz = roff_getname(r, &val, ln, pos);
1.363 schwarze 3131: if (key[keysz] == '\\' || key[keysz] == '\t')
1.277 schwarze 3132: return ROFF_IGN;
1.89 kristaps 3133:
1.187 schwarze 3134: sign = *val;
1.238 schwarze 3135: if (sign == '+' || sign == '-')
1.187 schwarze 3136: val++;
3137:
1.327 schwarze 3138: len = 0;
3139: if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
3140: return ROFF_IGN;
3141:
3142: step = val + len;
3143: while (isspace((unsigned char)*step))
3144: step++;
3145: if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)
3146: is = INT_MIN;
1.109 kristaps 3147:
1.327 schwarze 3148: roff_setregn(r, key, keysz, iv, sign, is);
1.277 schwarze 3149: return ROFF_IGN;
1.203 schwarze 3150: }
3151:
1.340 schwarze 3152: static int
1.203 schwarze 3153: roff_rr(ROFF_ARGS)
3154: {
3155: struct roffreg *reg, **prev;
1.212 schwarze 3156: char *name, *cp;
3157: size_t namesz;
1.203 schwarze 3158:
1.238 schwarze 3159: name = cp = buf->buf + pos;
3160: if (*name == '\0')
1.277 schwarze 3161: return ROFF_IGN;
1.212 schwarze 3162: namesz = roff_getname(r, &cp, ln, pos);
3163: name[namesz] = '\0';
1.203 schwarze 3164:
3165: prev = &r->regtab;
3166: while (1) {
3167: reg = *prev;
1.238 schwarze 3168: if (reg == NULL || !strcmp(name, reg->key.p))
1.203 schwarze 3169: break;
3170: prev = ®->next;
3171: }
1.238 schwarze 3172: if (reg != NULL) {
1.203 schwarze 3173: *prev = reg->next;
3174: free(reg->key.p);
3175: free(reg);
3176: }
1.277 schwarze 3177: return ROFF_IGN;
1.122 schwarze 3178: }
3179:
1.266 schwarze 3180: /* --- handler functions for roff requests -------------------------------- */
3181:
1.340 schwarze 3182: static int
1.122 schwarze 3183: roff_rm(ROFF_ARGS)
3184: {
3185: const char *name;
3186: char *cp;
1.212 schwarze 3187: size_t namesz;
1.122 schwarze 3188:
1.238 schwarze 3189: cp = buf->buf + pos;
3190: while (*cp != '\0') {
1.212 schwarze 3191: name = cp;
1.238 schwarze 3192: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.212 schwarze 3193: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.311 schwarze 3194: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.363 schwarze 3195: if (name[namesz] == '\\' || name[namesz] == '\t')
1.212 schwarze 3196: break;
1.122 schwarze 3197: }
1.277 schwarze 3198: return ROFF_IGN;
1.178 schwarze 3199: }
3200:
1.340 schwarze 3201: static int
1.178 schwarze 3202: roff_it(ROFF_ARGS)
3203: {
3204: int iv;
3205:
3206: /* Parse the number of lines. */
1.261 schwarze 3207:
3208: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.350 schwarze 3209: mandoc_msg(MANDOCERR_IT_NONUM,
3210: ln, ppos, "%s", buf->buf + 1);
1.277 schwarze 3211: return ROFF_IGN;
1.178 schwarze 3212: }
3213:
1.262 schwarze 3214: while (isspace((unsigned char)buf->buf[pos]))
3215: pos++;
3216:
3217: /*
3218: * Arm the input line trap.
3219: * Special-casing "an-trap" is an ugly workaround to cope
3220: * with DocBook stupidly fiddling with man(7) internals.
3221: */
1.261 schwarze 3222:
1.178 schwarze 3223: roffit_lines = iv;
1.262 schwarze 3224: roffit_macro = mandoc_strdup(iv != 1 ||
3225: strcmp(buf->buf + pos, "an-trap") ?
3226: buf->buf + pos : "br");
1.277 schwarze 3227: return ROFF_IGN;
1.175 schwarze 3228: }
3229:
1.340 schwarze 3230: static int
1.175 schwarze 3231: roff_Dd(ROFF_ARGS)
3232: {
1.315 schwarze 3233: int mask;
3234: enum roff_tok t, te;
1.227 schwarze 3235:
1.315 schwarze 3236: switch (tok) {
3237: case ROFF_Dd:
3238: tok = MDOC_Dd;
3239: te = MDOC_MAX;
3240: if (r->format == 0)
3241: r->format = MPARSE_MDOC;
3242: mask = MPARSE_MDOC | MPARSE_QUICK;
3243: break;
3244: case ROFF_TH:
3245: tok = MAN_TH;
3246: te = MAN_MAX;
3247: if (r->format == 0)
3248: r->format = MPARSE_MAN;
3249: mask = MPARSE_QUICK;
3250: break;
3251: default:
3252: abort();
3253: }
3254: if ((r->options & mask) == 0)
3255: for (t = tok; t < te; t++)
3256: roff_setstr(r, roff_name[t], NULL, 0);
1.277 schwarze 3257: return ROFF_CONT;
1.109 kristaps 3258: }
3259:
1.340 schwarze 3260: static int
1.109 kristaps 3261: roff_TE(ROFF_ARGS)
3262: {
1.361 schwarze 3263: r->man->flags &= ~ROFF_NONOFILL;
1.321 schwarze 3264: if (r->tbl == NULL) {
1.350 schwarze 3265: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "TE");
1.321 schwarze 3266: return ROFF_IGN;
3267: }
1.346 schwarze 3268: if (tbl_end(r->tbl, 0) == 0) {
1.321 schwarze 3269: r->tbl = NULL;
1.258 schwarze 3270: free(buf->buf);
3271: buf->buf = mandoc_strdup(".sp");
3272: buf->sz = 4;
1.329 schwarze 3273: *offs = 0;
1.277 schwarze 3274: return ROFF_REPARSE;
1.258 schwarze 3275: }
1.321 schwarze 3276: r->tbl = NULL;
1.277 schwarze 3277: return ROFF_IGN;
1.112 kristaps 3278: }
3279:
1.340 schwarze 3280: static int
1.112 kristaps 3281: roff_T_(ROFF_ARGS)
3282: {
3283:
3284: if (NULL == r->tbl)
1.350 schwarze 3285: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "T&");
1.112 kristaps 3286: else
1.296 schwarze 3287: tbl_restart(ln, ppos, r->tbl);
1.112 kristaps 3288:
1.277 schwarze 3289: return ROFF_IGN;
1.109 kristaps 3290: }
3291:
1.230 schwarze 3292: /*
3293: * Handle in-line equation delimiters.
3294: */
1.340 schwarze 3295: static int
1.238 schwarze 3296: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.151 kristaps 3297: {
1.233 schwarze 3298: char *cp1, *cp2;
3299: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.151 kristaps 3300:
1.230 schwarze 3301: /*
3302: * Outside equations, look for an opening delimiter.
3303: * If we are inside an equation, we already know it is
3304: * in-line, or this function wouldn't have been called;
3305: * so look for a closing delimiter.
3306: */
3307:
1.238 schwarze 3308: cp1 = buf->buf + pos;
1.230 schwarze 3309: cp2 = strchr(cp1, r->eqn == NULL ?
3310: r->last_eqn->odelim : r->last_eqn->cdelim);
3311: if (cp2 == NULL)
1.277 schwarze 3312: return ROFF_CONT;
1.230 schwarze 3313:
1.233 schwarze 3314: *cp2++ = '\0';
3315: bef_pr = bef_nl = aft_nl = aft_pr = "";
3316:
3317: /* Handle preceding text, protecting whitespace. */
3318:
1.238 schwarze 3319: if (*buf->buf != '\0') {
1.233 schwarze 3320: if (r->eqn == NULL)
3321: bef_pr = "\\&";
3322: bef_nl = "\n";
3323: }
3324:
3325: /*
3326: * Prepare replacing the delimiter with an equation macro
3327: * and drop leading white space from the equation.
3328: */
1.230 schwarze 3329:
1.233 schwarze 3330: if (r->eqn == NULL) {
3331: while (*cp2 == ' ')
3332: cp2++;
3333: mac = ".EQ";
3334: } else
3335: mac = ".EN";
3336:
3337: /* Handle following text, protecting whitespace. */
3338:
3339: if (*cp2 != '\0') {
3340: aft_nl = "\n";
3341: if (r->eqn != NULL)
3342: aft_pr = "\\&";
3343: }
3344:
3345: /* Do the actual replacement. */
3346:
1.238 schwarze 3347: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.233 schwarze 3348: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.238 schwarze 3349: free(buf->buf);
3350: buf->buf = cp1;
1.230 schwarze 3351:
3352: /* Toggle the in-line state of the eqn subsystem. */
3353:
3354: r->eqn_inline = r->eqn == NULL;
1.277 schwarze 3355: return ROFF_REPARSE;
1.151 kristaps 3356: }
3357:
1.340 schwarze 3358: static int
1.235 schwarze 3359: roff_EQ(ROFF_ARGS)
1.125 kristaps 3360: {
1.319 schwarze 3361: struct roff_node *n;
3362:
1.356 schwarze 3363: if (r->man->meta.macroset == MACROSET_MAN)
1.322 schwarze 3364: man_breakscope(r->man, ROFF_EQ);
1.319 schwarze 3365: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
3366: if (ln > r->man->last->line)
3367: n->flags |= NODE_LINE;
1.348 schwarze 3368: n->eqn = eqn_box_new();
1.319 schwarze 3369: roff_node_append(r->man, n);
3370: r->man->next = ROFF_NEXT_SIBLING;
1.125 kristaps 3371:
1.238 schwarze 3372: assert(r->eqn == NULL);
1.319 schwarze 3373: if (r->last_eqn == NULL)
1.351 schwarze 3374: r->last_eqn = eqn_alloc();
1.319 schwarze 3375: else
3376: eqn_reset(r->last_eqn);
3377: r->eqn = r->last_eqn;
3378: r->eqn->node = n;
1.151 kristaps 3379:
1.238 schwarze 3380: if (buf->buf[pos] != '\0')
1.350 schwarze 3381: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.238 schwarze 3382: ".EQ %s", buf->buf + pos);
1.151 kristaps 3383:
1.277 schwarze 3384: return ROFF_IGN;
1.125 kristaps 3385: }
3386:
1.340 schwarze 3387: static int
1.125 kristaps 3388: roff_EN(ROFF_ARGS)
3389: {
1.319 schwarze 3390: if (r->eqn != NULL) {
3391: eqn_parse(r->eqn);
3392: r->eqn = NULL;
3393: } else
1.350 schwarze 3394: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "EN");
1.319 schwarze 3395: if (buf->buf[pos] != '\0')
1.350 schwarze 3396: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.319 schwarze 3397: "EN %s", buf->buf + pos);
1.277 schwarze 3398: return ROFF_IGN;
1.125 kristaps 3399: }
3400:
1.340 schwarze 3401: static int
1.109 kristaps 3402: roff_TS(ROFF_ARGS)
3403: {
1.321 schwarze 3404: if (r->tbl != NULL) {
1.350 schwarze 3405: mandoc_msg(MANDOCERR_BLK_BROKEN, ln, ppos, "TS breaks TS");
1.346 schwarze 3406: tbl_end(r->tbl, 0);
1.115 kristaps 3407: }
1.361 schwarze 3408: r->man->flags |= ROFF_NONOFILL;
1.351 schwarze 3409: r->tbl = tbl_alloc(ppos, ln, r->last_tbl);
1.346 schwarze 3410: if (r->last_tbl == NULL)
1.321 schwarze 3411: r->first_tbl = r->tbl;
3412: r->last_tbl = r->tbl;
1.297 schwarze 3413: return ROFF_IGN;
3414: }
3415:
1.340 schwarze 3416: static int
1.358 schwarze 3417: roff_noarg(ROFF_ARGS)
3418: {
3419: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3420: man_breakscope(r->man, tok);
3421: if (tok == ROFF_brp)
3422: tok = ROFF_br;
3423: roff_elem_alloc(r->man, ln, ppos, tok);
3424: if (buf->buf[pos] != '\0')
3425: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
3426: "%s %s", roff_name[tok], buf->buf + pos);
3427: if (tok == ROFF_nf)
3428: r->man->flags |= ROFF_NOFILL;
3429: else if (tok == ROFF_fi)
3430: r->man->flags &= ~ROFF_NOFILL;
3431: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3432: r->man->next = ROFF_NEXT_SIBLING;
3433: return ROFF_IGN;
3434: }
3435:
3436: static int
1.297 schwarze 3437: roff_onearg(ROFF_ARGS)
3438: {
3439: struct roff_node *n;
3440: char *cp;
1.305 schwarze 3441: int npos;
1.297 schwarze 3442:
1.302 schwarze 3443: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.320 schwarze 3444: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
3445: tok == ROFF_ti))
1.302 schwarze 3446: man_breakscope(r->man, tok);
3447:
1.309 schwarze 3448: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.305 schwarze 3449: r->man->last = roffce_node;
3450: r->man->next = ROFF_NEXT_SIBLING;
3451: }
3452:
1.297 schwarze 3453: roff_elem_alloc(r->man, ln, ppos, tok);
3454: n = r->man->last;
3455:
3456: cp = buf->buf + pos;
3457: if (*cp != '\0') {
3458: while (*cp != '\0' && *cp != ' ')
3459: cp++;
3460: while (*cp == ' ')
3461: *cp++ = '\0';
3462: if (*cp != '\0')
1.350 schwarze 3463: mandoc_msg(MANDOCERR_ARG_EXCESS,
3464: ln, (int)(cp - buf->buf),
1.297 schwarze 3465: "%s ... %s", roff_name[tok], cp);
3466: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.300 schwarze 3467: }
3468:
1.309 schwarze 3469: if (tok == ROFF_ce || tok == ROFF_rj) {
3470: if (r->man->last->type == ROFFT_ELEM) {
1.305 schwarze 3471: roff_word_alloc(r->man, ln, pos, "1");
3472: r->man->last->flags |= NODE_NOSRC;
3473: }
3474: npos = 0;
3475: if (roff_evalnum(r, ln, r->man->last->string, &npos,
3476: &roffce_lines, 0) == 0) {
1.350 schwarze 3477: mandoc_msg(MANDOCERR_CE_NONUM,
3478: ln, pos, "ce %s", buf->buf + pos);
1.305 schwarze 3479: roffce_lines = 1;
3480: }
3481: if (roffce_lines < 1) {
3482: r->man->last = r->man->last->parent;
3483: roffce_node = NULL;
3484: roffce_lines = 0;
3485: } else
3486: roffce_node = r->man->last->parent;
3487: } else {
3488: n->flags |= NODE_VALID | NODE_ENDED;
3489: r->man->last = n;
3490: }
3491: n->flags |= NODE_LINE;
1.300 schwarze 3492: r->man->next = ROFF_NEXT_SIBLING;
3493: return ROFF_IGN;
3494: }
3495:
1.340 schwarze 3496: static int
1.300 schwarze 3497: roff_manyarg(ROFF_ARGS)
3498: {
3499: struct roff_node *n;
3500: char *sp, *ep;
3501:
3502: roff_elem_alloc(r->man, ln, ppos, tok);
3503: n = r->man->last;
3504:
3505: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3506: while (*ep != '\0' && *ep != ' ')
3507: ep++;
3508: while (*ep == ' ')
3509: *ep++ = '\0';
3510: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.297 schwarze 3511: }
3512:
3513: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3514: r->man->last = n;
3515: r->man->next = ROFF_NEXT_SIBLING;
1.277 schwarze 3516: return ROFF_IGN;
1.251 schwarze 3517: }
3518:
1.340 schwarze 3519: static int
1.311 schwarze 3520: roff_als(ROFF_ARGS)
3521: {
3522: char *oldn, *newn, *end, *value;
3523: size_t oldsz, newsz, valsz;
3524:
3525: newn = oldn = buf->buf + pos;
3526: if (*newn == '\0')
3527: return ROFF_IGN;
3528:
3529: newsz = roff_getname(r, &oldn, ln, pos);
1.363 schwarze 3530: if (newn[newsz] == '\\' || newn[newsz] == '\t' || *oldn == '\0')
1.311 schwarze 3531: return ROFF_IGN;
3532:
3533: end = oldn;
3534: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3535: if (oldsz == 0)
3536: return ROFF_IGN;
3537:
1.338 schwarze 3538: valsz = mandoc_asprintf(&value, ".%.*s \\$@\\\"\n",
1.315 schwarze 3539: (int)oldsz, oldn);
1.311 schwarze 3540: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3541: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3542: free(value);
1.364 schwarze 3543: return ROFF_IGN;
3544: }
3545:
3546: /*
3547: * The .break request only makes sense inside conditionals,
3548: * and that case is already handled in roff_cond_sub().
3549: */
3550: static int
3551: roff_break(ROFF_ARGS)
3552: {
3553: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, pos, "break");
1.296 schwarze 3554: return ROFF_IGN;
1.92 schwarze 3555: }
3556:
1.340 schwarze 3557: static int
1.174 kristaps 3558: roff_cc(ROFF_ARGS)
3559: {
3560: const char *p;
3561:
1.238 schwarze 3562: p = buf->buf + pos;
1.174 kristaps 3563:
1.238 schwarze 3564: if (*p == '\0' || (r->control = *p++) == '.')
1.303 schwarze 3565: r->control = '\0';
1.174 kristaps 3566:
1.238 schwarze 3567: if (*p != '\0')
1.350 schwarze 3568: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.260 schwarze 3569: ln, p - buf->buf, "cc ... %s", p);
1.174 kristaps 3570:
1.341 schwarze 3571: return ROFF_IGN;
3572: }
3573:
3574: static int
3575: roff_char(ROFF_ARGS)
3576: {
3577: const char *p, *kp, *vp;
3578: size_t ksz, vsz;
3579: int font;
3580:
3581: /* Parse the character to be replaced. */
3582:
3583: kp = buf->buf + pos;
3584: p = kp + 1;
3585: if (*kp == '\0' || (*kp == '\\' &&
3586: mandoc_escape(&p, NULL, NULL) != ESCAPE_SPECIAL) ||
3587: (*p != ' ' && *p != '\0')) {
1.350 schwarze 3588: mandoc_msg(MANDOCERR_CHAR_ARG, ln, pos, "char %s", kp);
1.341 schwarze 3589: return ROFF_IGN;
3590: }
3591: ksz = p - kp;
3592: while (*p == ' ')
3593: p++;
3594:
3595: /*
3596: * If the replacement string contains a font escape sequence,
3597: * we have to restore the font at the end.
3598: */
3599:
3600: vp = p;
3601: vsz = strlen(p);
3602: font = 0;
3603: while (*p != '\0') {
3604: if (*p++ != '\\')
3605: continue;
3606: switch (mandoc_escape(&p, NULL, NULL)) {
3607: case ESCAPE_FONT:
3608: case ESCAPE_FONTROMAN:
3609: case ESCAPE_FONTITALIC:
3610: case ESCAPE_FONTBOLD:
3611: case ESCAPE_FONTBI:
1.378 schwarze 3612: case ESCAPE_FONTCR:
3613: case ESCAPE_FONTCB:
3614: case ESCAPE_FONTCI:
1.341 schwarze 3615: case ESCAPE_FONTPREV:
3616: font++;
3617: break;
3618: default:
3619: break;
3620: }
3621: }
3622: if (font > 1)
1.350 schwarze 3623: mandoc_msg(MANDOCERR_CHAR_FONT,
3624: ln, (int)(vp - buf->buf), "%s", vp);
1.341 schwarze 3625:
3626: /*
3627: * Approximate the effect of .char using the .tr tables.
3628: * XXX In groff, .char and .tr interact differently.
3629: */
3630:
3631: if (ksz == 1) {
3632: if (r->xtab == NULL)
3633: r->xtab = mandoc_calloc(128, sizeof(*r->xtab));
3634: assert((unsigned int)*kp < 128);
3635: free(r->xtab[(int)*kp].p);
3636: r->xtab[(int)*kp].sz = mandoc_asprintf(&r->xtab[(int)*kp].p,
3637: "%s%s", vp, font ? "\fP" : "");
3638: } else {
3639: roff_setstrn(&r->xmbtab, kp, ksz, vp, vsz, 0);
3640: if (font)
3641: roff_setstrn(&r->xmbtab, kp, ksz, "\\fP", 3, 1);
3642: }
1.277 schwarze 3643: return ROFF_IGN;
1.174 kristaps 3644: }
3645:
1.340 schwarze 3646: static int
1.303 schwarze 3647: roff_ec(ROFF_ARGS)
3648: {
3649: const char *p;
3650:
3651: p = buf->buf + pos;
3652: if (*p == '\0')
3653: r->escape = '\\';
3654: else {
3655: r->escape = *p;
3656: if (*++p != '\0')
1.350 schwarze 3657: mandoc_msg(MANDOCERR_ARG_EXCESS, ln,
3658: (int)(p - buf->buf), "ec ... %s", p);
1.303 schwarze 3659: }
3660: return ROFF_IGN;
3661: }
3662:
1.340 schwarze 3663: static int
1.303 schwarze 3664: roff_eo(ROFF_ARGS)
3665: {
3666: r->escape = '\0';
3667: if (buf->buf[pos] != '\0')
1.350 schwarze 3668: mandoc_msg(MANDOCERR_ARG_SKIP,
1.303 schwarze 3669: ln, pos, "eo %s", buf->buf + pos);
1.384 schwarze 3670: return ROFF_IGN;
3671: }
3672:
3673: static int
3674: roff_mc(ROFF_ARGS)
3675: {
3676: struct roff_node *n;
3677: char *cp;
3678:
3679: /* Parse the first argument. */
3680:
3681: cp = buf->buf + pos;
3682: if (*cp != '\0')
3683: cp++;
3684: if (buf->buf[pos] == '\\') {
3685: switch (mandoc_escape((const char **)&cp, NULL, NULL)) {
3686: case ESCAPE_SPECIAL:
3687: case ESCAPE_UNICODE:
3688: case ESCAPE_NUMBERED:
3689: break;
3690: default:
3691: *cp = '\0';
3692: mandoc_msg(MANDOCERR_MC_ESC, ln, pos,
3693: "mc %s", buf->buf + pos);
3694: buf->buf[pos] = '\0';
3695: break;
3696: }
3697: }
3698:
3699: /* Ignore additional arguments. */
3700:
3701: while (*cp == ' ')
3702: *cp++ = '\0';
3703: if (*cp != '\0') {
3704: mandoc_msg(MANDOCERR_MC_DIST, ln, (int)(cp - buf->buf),
3705: "mc ... %s", cp);
3706: *cp = '\0';
3707: }
3708:
3709: /* Create the .mc node. */
3710:
3711: roff_elem_alloc(r->man, ln, ppos, tok);
3712: n = r->man->last;
3713: if (buf->buf[pos] != '\0')
3714: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
3715: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3716: r->man->last = n;
3717: r->man->next = ROFF_NEXT_SIBLING;
1.303 schwarze 3718: return ROFF_IGN;
1.330 schwarze 3719: }
3720:
1.340 schwarze 3721: static int
1.330 schwarze 3722: roff_nop(ROFF_ARGS)
3723: {
3724: while (buf->buf[pos] == ' ')
3725: pos++;
3726: *offs = pos;
3727: return ROFF_RERUN;
1.303 schwarze 3728: }
3729:
1.340 schwarze 3730: static int
1.164 kristaps 3731: roff_tr(ROFF_ARGS)
3732: {
3733: const char *p, *first, *second;
3734: size_t fsz, ssz;
3735:
1.238 schwarze 3736: p = buf->buf + pos;
1.164 kristaps 3737:
1.238 schwarze 3738: if (*p == '\0') {
1.350 schwarze 3739: mandoc_msg(MANDOCERR_REQ_EMPTY, ln, ppos, "tr");
1.277 schwarze 3740: return ROFF_IGN;
1.164 kristaps 3741: }
3742:
1.238 schwarze 3743: while (*p != '\0') {
1.164 kristaps 3744: fsz = ssz = 1;
3745:
3746: first = p++;
1.238 schwarze 3747: if (*first == '\\') {
1.394 schwarze 3748: if (mandoc_escape(&p, NULL, NULL) == ESCAPE_ERROR)
1.277 schwarze 3749: return ROFF_IGN;
1.164 kristaps 3750: fsz = (size_t)(p - first);
3751: }
3752:
3753: second = p++;
1.238 schwarze 3754: if (*second == '\\') {
1.394 schwarze 3755: if (mandoc_escape(&p, NULL, NULL) == ESCAPE_ERROR)
1.277 schwarze 3756: return ROFF_IGN;
1.164 kristaps 3757: ssz = (size_t)(p - second);
1.238 schwarze 3758: } else if (*second == '\0') {
1.350 schwarze 3759: mandoc_msg(MANDOCERR_TR_ODD, ln,
3760: (int)(first - buf->buf), "tr %s", first);
1.164 kristaps 3761: second = " ";
1.165 kristaps 3762: p--;
1.164 kristaps 3763: }
3764:
1.167 kristaps 3765: if (fsz > 1) {
1.207 schwarze 3766: roff_setstrn(&r->xmbtab, first, fsz,
3767: second, ssz, 0);
1.167 kristaps 3768: continue;
3769: }
3770:
1.238 schwarze 3771: if (r->xtab == NULL)
1.207 schwarze 3772: r->xtab = mandoc_calloc(128,
3773: sizeof(struct roffstr));
1.167 kristaps 3774:
3775: free(r->xtab[(int)*first].p);
3776: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3777: r->xtab[(int)*first].sz = ssz;
1.164 kristaps 3778: }
3779:
1.277 schwarze 3780: return ROFF_IGN;
1.164 kristaps 3781: }
3782:
1.339 schwarze 3783: /*
3784: * Implementation of the .return request.
3785: * There is no need to call roff_userret() from here.
3786: * The read module will call that after rewinding the reader stack
3787: * to the place from where the current macro was called.
3788: */
1.340 schwarze 3789: static int
1.339 schwarze 3790: roff_return(ROFF_ARGS)
3791: {
3792: if (r->mstackpos >= 0)
1.340 schwarze 3793: return ROFF_IGN | ROFF_USERRET;
1.339 schwarze 3794:
1.350 schwarze 3795: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "return");
1.339 schwarze 3796: return ROFF_IGN;
3797: }
3798:
1.340 schwarze 3799: static int
1.306 schwarze 3800: roff_rn(ROFF_ARGS)
3801: {
3802: const char *value;
3803: char *oldn, *newn, *end;
3804: size_t oldsz, newsz;
1.315 schwarze 3805: int deftype;
1.306 schwarze 3806:
3807: oldn = newn = buf->buf + pos;
3808: if (*oldn == '\0')
3809: return ROFF_IGN;
3810:
3811: oldsz = roff_getname(r, &newn, ln, pos);
1.363 schwarze 3812: if (oldn[oldsz] == '\\' || oldn[oldsz] == '\t' || *newn == '\0')
1.306 schwarze 3813: return ROFF_IGN;
3814:
3815: end = newn;
3816: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3817: if (newsz == 0)
3818: return ROFF_IGN;
3819:
1.315 schwarze 3820: deftype = ROFFDEF_ANY;
3821: value = roff_getstrn(r, oldn, oldsz, &deftype);
3822: switch (deftype) {
3823: case ROFFDEF_USER:
1.306 schwarze 3824: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3825: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3826: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.315 schwarze 3827: break;
3828: case ROFFDEF_PRE:
3829: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3830: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3831: break;
3832: case ROFFDEF_REN:
1.306 schwarze 3833: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3834: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.315 schwarze 3835: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3836: break;
3837: case ROFFDEF_STD:
1.306 schwarze 3838: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.315 schwarze 3839: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3840: break;
3841: default:
3842: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3843: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3844: break;
3845: }
1.306 schwarze 3846: return ROFF_IGN;
3847: }
3848:
1.340 schwarze 3849: static int
1.339 schwarze 3850: roff_shift(ROFF_ARGS)
3851: {
3852: struct mctx *ctx;
1.382 schwarze 3853: int argpos, levels, i;
1.339 schwarze 3854:
1.382 schwarze 3855: argpos = pos;
1.339 schwarze 3856: levels = 1;
3857: if (buf->buf[pos] != '\0' &&
3858: roff_evalnum(r, ln, buf->buf, &pos, &levels, 0) == 0) {
1.350 schwarze 3859: mandoc_msg(MANDOCERR_CE_NONUM,
1.339 schwarze 3860: ln, pos, "shift %s", buf->buf + pos);
3861: levels = 1;
3862: }
3863: if (r->mstackpos < 0) {
1.350 schwarze 3864: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "shift");
1.339 schwarze 3865: return ROFF_IGN;
3866: }
3867: ctx = r->mstack + r->mstackpos;
3868: if (levels > ctx->argc) {
1.350 schwarze 3869: mandoc_msg(MANDOCERR_SHIFT,
1.382 schwarze 3870: ln, argpos, "%d, but max is %d", levels, ctx->argc);
1.339 schwarze 3871: levels = ctx->argc;
1.382 schwarze 3872: }
3873: if (levels < 0) {
3874: mandoc_msg(MANDOCERR_ARG_NEG, ln, argpos, "shift %d", levels);
3875: levels = 0;
1.339 schwarze 3876: }
3877: if (levels == 0)
3878: return ROFF_IGN;
3879: for (i = 0; i < levels; i++)
3880: free(ctx->argv[i]);
3881: ctx->argc -= levels;
3882: for (i = 0; i < ctx->argc; i++)
3883: ctx->argv[i] = ctx->argv[i + levels];
3884: return ROFF_IGN;
3885: }
3886:
1.340 schwarze 3887: static int
1.105 kristaps 3888: roff_so(ROFF_ARGS)
3889: {
1.249 schwarze 3890: char *name, *cp;
1.105 kristaps 3891:
1.238 schwarze 3892: name = buf->buf + pos;
1.350 schwarze 3893: mandoc_msg(MANDOCERR_SO, ln, ppos, "so %s", name);
1.105 kristaps 3894:
3895: /*
3896: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3897: * opening anything that's not in our cwd or anything beneath
3898: * it. Thus, explicitly disallow traversing up the file-system
3899: * or using absolute paths.
3900: */
3901:
1.238 schwarze 3902: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.350 schwarze 3903: mandoc_msg(MANDOCERR_SO_PATH, ln, ppos, ".so %s", name);
1.249 schwarze 3904: buf->sz = mandoc_asprintf(&cp,
3905: ".sp\nSee the file %s.\n.sp", name) + 1;
3906: free(buf->buf);
3907: buf->buf = cp;
3908: *offs = 0;
1.277 schwarze 3909: return ROFF_REPARSE;
1.105 kristaps 3910: }
3911:
3912: *offs = pos;
1.277 schwarze 3913: return ROFF_SO;
1.105 kristaps 3914: }
1.92 schwarze 3915:
1.266 schwarze 3916: /* --- user defined strings and macros ------------------------------------ */
3917:
1.340 schwarze 3918: static int
1.106 kristaps 3919: roff_userdef(ROFF_ARGS)
1.99 kristaps 3920: {
1.339 schwarze 3921: struct mctx *ctx;
3922: char *arg, *ap, *dst, *src;
3923: size_t sz;
3924:
1.365 schwarze 3925: /* If the macro is empty, ignore it altogether. */
3926:
3927: if (*r->current_string == '\0')
3928: return ROFF_IGN;
3929:
1.339 schwarze 3930: /* Initialize a new macro stack context. */
3931:
3932: if (++r->mstackpos == r->mstacksz) {
3933: r->mstack = mandoc_recallocarray(r->mstack,
3934: r->mstacksz, r->mstacksz + 8, sizeof(*r->mstack));
3935: r->mstacksz += 8;
3936: }
3937: ctx = r->mstack + r->mstackpos;
3938: ctx->argc = 0;
3939:
3940: /*
3941: * Collect pointers to macro argument strings,
3942: * NUL-terminating them and escaping quotes.
3943: */
3944:
3945: src = buf->buf + pos;
3946: while (*src != '\0') {
3947: if (ctx->argc == ctx->argsz) {
3948: ctx->argsz += 8;
3949: ctx->argv = mandoc_reallocarray(ctx->argv,
3950: ctx->argsz, sizeof(*ctx->argv));
3951: }
1.355 schwarze 3952: arg = roff_getarg(r, &src, ln, &pos);
1.339 schwarze 3953: sz = 1; /* For the terminating NUL. */
3954: for (ap = arg; *ap != '\0'; ap++)
3955: sz += *ap == '"' ? 4 : 1;
3956: ctx->argv[ctx->argc++] = dst = mandoc_malloc(sz);
3957: for (ap = arg; *ap != '\0'; ap++) {
3958: if (*ap == '"') {
3959: memcpy(dst, "\\(dq", 4);
3960: dst += 4;
3961: } else
3962: *dst++ = *ap;
1.106 kristaps 3963: }
1.339 schwarze 3964: *dst = '\0';
1.355 schwarze 3965: free(arg);
1.337 schwarze 3966: }
3967:
1.339 schwarze 3968: /* Replace the macro invocation by the macro definition. */
1.263 schwarze 3969:
1.238 schwarze 3970: free(buf->buf);
1.339 schwarze 3971: buf->buf = mandoc_strdup(r->current_string);
3972: buf->sz = strlen(buf->buf) + 1;
1.248 schwarze 3973: *offs = 0;
1.106 kristaps 3974:
1.365 schwarze 3975: return buf->buf[buf->sz - 2] == '\n' ?
1.340 schwarze 3976: ROFF_REPARSE | ROFF_USERCALL : ROFF_IGN | ROFF_APPEND;
1.99 kristaps 3977: }
1.121 schwarze 3978:
1.306 schwarze 3979: /*
3980: * Calling a high-level macro that was renamed with .rn.
3981: * r->current_string has already been set up by roff_parse().
3982: */
1.340 schwarze 3983: static int
1.306 schwarze 3984: roff_renamed(ROFF_ARGS)
3985: {
3986: char *nbuf;
3987:
1.315 schwarze 3988: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
3989: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.306 schwarze 3990: free(buf->buf);
3991: buf->buf = nbuf;
1.329 schwarze 3992: *offs = 0;
1.306 schwarze 3993: return ROFF_CONT;
3994: }
3995:
1.362 schwarze 3996: /*
3997: * Measure the length in bytes of the roff identifier at *cpp
3998: * and advance the pointer to the next word.
3999: */
1.212 schwarze 4000: static size_t
1.121 schwarze 4001: roff_getname(struct roff *r, char **cpp, int ln, int pos)
4002: {
4003: char *name, *cp;
1.393 schwarze 4004: int namesz, inam, iend;
1.121 schwarze 4005:
4006: name = *cpp;
1.362 schwarze 4007: if (*name == '\0')
1.277 schwarze 4008: return 0;
1.121 schwarze 4009:
1.362 schwarze 4010: /* Advance cp to the byte after the end of the name. */
4011:
1.393 schwarze 4012: cp = name;
4013: namesz = 0;
4014: for (;;) {
1.363 schwarze 4015: if (*cp == '\0')
1.212 schwarze 4016: break;
1.363 schwarze 4017: if (*cp == ' ' || *cp == '\t') {
4018: cp++;
4019: break;
4020: }
1.393 schwarze 4021: if (*cp != '\\') {
4022: if (name + namesz < cp) {
4023: name[namesz] = *cp;
4024: *cp = ' ';
4025: }
4026: namesz++;
4027: cp++;
1.121 schwarze 4028: continue;
1.393 schwarze 4029: }
1.362 schwarze 4030: if (cp[1] == '{' || cp[1] == '}')
1.215 schwarze 4031: break;
1.393 schwarze 4032: if (roff_escape(cp, 0, 0, NULL, &inam,
4033: NULL, NULL, &iend) != ESCAPE_UNDEF) {
4034: mandoc_msg(MANDOCERR_NAMESC, ln, pos,
4035: "%.*s%.*s", namesz, name, iend, cp);
4036: cp += iend;
4037: break;
4038: }
4039:
4040: /*
4041: * In an identifier, \\, \., \G and so on
4042: * are reduced to \, ., G and so on,
4043: * vaguely similar to copy mode.
4044: */
4045:
4046: name[namesz++] = cp[inam];
4047: while (iend--) {
4048: if (cp >= name + namesz)
4049: *cp = ' ';
4050: cp++;
4051: }
1.121 schwarze 4052: }
4053:
4054: /* Read past spaces. */
1.362 schwarze 4055:
4056: while (*cp == ' ')
1.121 schwarze 4057: cp++;
4058:
4059: *cpp = cp;
1.277 schwarze 4060: return namesz;
1.121 schwarze 4061: }
4062:
1.106 kristaps 4063: /*
4064: * Store *string into the user-defined string called *name.
4065: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.193 schwarze 4066: * append == 0: replace mode
4067: * append == 1: single-line append mode
4068: * append == 2: multiline append mode, append '\n' after each call
1.106 kristaps 4069: */
1.94 kristaps 4070: static void
1.106 kristaps 4071: roff_setstr(struct roff *r, const char *name, const char *string,
1.193 schwarze 4072: int append)
1.92 schwarze 4073: {
1.315 schwarze 4074: size_t namesz;
1.164 kristaps 4075:
1.315 schwarze 4076: namesz = strlen(name);
4077: roff_setstrn(&r->strtab, name, namesz, string,
1.207 schwarze 4078: string ? strlen(string) : 0, append);
1.315 schwarze 4079: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.164 kristaps 4080: }
4081:
4082: static void
1.166 kristaps 4083: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.193 schwarze 4084: const char *string, size_t stringsz, int append)
1.164 kristaps 4085: {
1.166 kristaps 4086: struct roffkv *n;
1.164 kristaps 4087: char *c;
4088: int i;
4089: size_t oldch, newch;
1.92 schwarze 4090:
1.106 kristaps 4091: /* Search for an existing string with the same name. */
1.164 kristaps 4092: n = *r;
4093:
1.211 schwarze 4094: while (n && (namesz != n->key.sz ||
4095: strncmp(n->key.p, name, namesz)))
1.92 schwarze 4096: n = n->next;
1.94 kristaps 4097:
4098: if (NULL == n) {
1.106 kristaps 4099: /* Create a new string table entry. */
1.166 kristaps 4100: n = mandoc_malloc(sizeof(struct roffkv));
4101: n->key.p = mandoc_strndup(name, namesz);
4102: n->key.sz = namesz;
4103: n->val.p = NULL;
4104: n->val.sz = 0;
1.164 kristaps 4105: n->next = *r;
4106: *r = n;
1.193 schwarze 4107: } else if (0 == append) {
1.166 kristaps 4108: free(n->val.p);
4109: n->val.p = NULL;
4110: n->val.sz = 0;
1.106 kristaps 4111: }
4112:
4113: if (NULL == string)
4114: return;
4115:
4116: /*
4117: * One additional byte for the '\n' in multiline mode,
4118: * and one for the terminating '\0'.
4119: */
1.193 schwarze 4120: newch = stringsz + (1 < append ? 2u : 1u);
1.164 kristaps 4121:
1.166 kristaps 4122: if (NULL == n->val.p) {
4123: n->val.p = mandoc_malloc(newch);
4124: *n->val.p = '\0';
1.106 kristaps 4125: oldch = 0;
4126: } else {
1.166 kristaps 4127: oldch = n->val.sz;
4128: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.106 kristaps 4129: }
4130:
4131: /* Skip existing content in the destination buffer. */
1.166 kristaps 4132: c = n->val.p + (int)oldch;
1.106 kristaps 4133:
4134: /* Append new content to the destination buffer. */
1.164 kristaps 4135: i = 0;
4136: while (i < (int)stringsz) {
1.106 kristaps 4137: /*
4138: * Rudimentary roff copy mode:
4139: * Handle escaped backslashes.
4140: */
1.164 kristaps 4141: if ('\\' == string[i] && '\\' == string[i + 1])
4142: i++;
4143: *c++ = string[i++];
1.106 kristaps 4144: }
1.94 kristaps 4145:
1.106 kristaps 4146: /* Append terminating bytes. */
1.193 schwarze 4147: if (1 < append)
1.106 kristaps 4148: *c++ = '\n';
1.163 kristaps 4149:
1.106 kristaps 4150: *c = '\0';
1.166 kristaps 4151: n->val.sz = (int)(c - n->val.p);
1.92 schwarze 4152: }
4153:
1.94 kristaps 4154: static const char *
1.325 schwarze 4155: roff_getstrn(struct roff *r, const char *name, size_t len,
1.315 schwarze 4156: int *deftype)
1.92 schwarze 4157: {
1.315 schwarze 4158: const struct roffkv *n;
1.325 schwarze 4159: int found, i;
1.315 schwarze 4160: enum roff_tok tok;
4161:
1.325 schwarze 4162: found = 0;
4163: for (n = r->strtab; n != NULL; n = n->next) {
4164: if (strncmp(name, n->key.p, len) != 0 ||
4165: n->key.p[len] != '\0' || n->val.p == NULL)
4166: continue;
4167: if (*deftype & ROFFDEF_USER) {
4168: *deftype = ROFFDEF_USER;
4169: return n->val.p;
4170: } else {
4171: found = 1;
4172: break;
4173: }
4174: }
4175: for (n = r->rentab; n != NULL; n = n->next) {
4176: if (strncmp(name, n->key.p, len) != 0 ||
4177: n->key.p[len] != '\0' || n->val.p == NULL)
4178: continue;
4179: if (*deftype & ROFFDEF_REN) {
4180: *deftype = ROFFDEF_REN;
4181: return n->val.p;
4182: } else {
4183: found = 1;
4184: break;
1.315 schwarze 4185: }
4186: }
1.325 schwarze 4187: for (i = 0; i < PREDEFS_MAX; i++) {
4188: if (strncmp(name, predefs[i].name, len) != 0 ||
4189: predefs[i].name[len] != '\0')
4190: continue;
4191: if (*deftype & ROFFDEF_PRE) {
4192: *deftype = ROFFDEF_PRE;
4193: return predefs[i].str;
4194: } else {
4195: found = 1;
4196: break;
1.315 schwarze 4197: }
4198: }
1.356 schwarze 4199: if (r->man->meta.macroset != MACROSET_MAN) {
1.325 schwarze 4200: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
4201: if (strncmp(name, roff_name[tok], len) != 0 ||
4202: roff_name[tok][len] != '\0')
4203: continue;
4204: if (*deftype & ROFFDEF_STD) {
4205: *deftype = ROFFDEF_STD;
4206: return NULL;
4207: } else {
4208: found = 1;
4209: break;
1.315 schwarze 4210: }
4211: }
4212: }
1.356 schwarze 4213: if (r->man->meta.macroset != MACROSET_MDOC) {
1.325 schwarze 4214: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
4215: if (strncmp(name, roff_name[tok], len) != 0 ||
4216: roff_name[tok][len] != '\0')
4217: continue;
4218: if (*deftype & ROFFDEF_STD) {
4219: *deftype = ROFFDEF_STD;
4220: return NULL;
4221: } else {
4222: found = 1;
4223: break;
1.315 schwarze 4224: }
4225: }
1.325 schwarze 4226: }
4227:
4228: if (found == 0 && *deftype != ROFFDEF_ANY) {
4229: if (*deftype & ROFFDEF_REN) {
4230: /*
4231: * This might still be a request,
4232: * so do not treat it as undefined yet.
4233: */
4234: *deftype = ROFFDEF_UNDEF;
4235: return NULL;
1.315 schwarze 4236: }
1.325 schwarze 4237:
4238: /* Using an undefined string defines it to be empty. */
4239:
4240: roff_setstrn(&r->strtab, name, len, "", 0, 0);
4241: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.315 schwarze 4242: }
1.325 schwarze 4243:
1.315 schwarze 4244: *deftype = 0;
1.277 schwarze 4245: return NULL;
1.92 schwarze 4246: }
4247:
1.94 kristaps 4248: static void
1.167 kristaps 4249: roff_freestr(struct roffkv *r)
1.92 schwarze 4250: {
1.166 kristaps 4251: struct roffkv *n, *nn;
1.92 schwarze 4252:
1.167 kristaps 4253: for (n = r; n; n = nn) {
1.166 kristaps 4254: free(n->key.p);
4255: free(n->val.p);
1.92 schwarze 4256: nn = n->next;
4257: free(n);
4258: }
1.114 kristaps 4259: }
1.266 schwarze 4260:
4261: /* --- accessors and utility functions ------------------------------------ */
1.164 kristaps 4262:
4263: /*
4264: * Duplicate an input string, making the appropriate character
4265: * conversations (as stipulated by `tr') along the way.
4266: * Returns a heap-allocated string with all the replacements made.
4267: */
4268: char *
4269: roff_strdup(const struct roff *r, const char *p)
4270: {
1.166 kristaps 4271: const struct roffkv *cp;
1.164 kristaps 4272: char *res;
4273: const char *pp;
4274: size_t ssz, sz;
4275: enum mandoc_esc esc;
4276:
1.167 kristaps 4277: if (NULL == r->xmbtab && NULL == r->xtab)
1.277 schwarze 4278: return mandoc_strdup(p);
1.164 kristaps 4279: else if ('\0' == *p)
1.277 schwarze 4280: return mandoc_strdup("");
1.164 kristaps 4281:
4282: /*
4283: * Step through each character looking for term matches
4284: * (remember that a `tr' can be invoked with an escape, which is
4285: * a glyph but the escape is multi-character).
4286: * We only do this if the character hash has been initialised
4287: * and the string is >0 length.
4288: */
4289:
4290: res = NULL;
4291: ssz = 0;
4292:
4293: while ('\0' != *p) {
1.289 schwarze 4294: assert((unsigned int)*p < 128);
4295: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.167 kristaps 4296: sz = r->xtab[(int)*p].sz;
4297: res = mandoc_realloc(res, ssz + sz + 1);
4298: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
4299: ssz += sz;
4300: p++;
4301: continue;
4302: } else if ('\\' != *p) {
4303: res = mandoc_realloc(res, ssz + 2);
4304: res[ssz++] = *p++;
4305: continue;
4306: }
4307:
1.164 kristaps 4308: /* Search for term matches. */
1.167 kristaps 4309: for (cp = r->xmbtab; cp; cp = cp->next)
1.166 kristaps 4310: if (0 == strncmp(p, cp->key.p, cp->key.sz))
1.164 kristaps 4311: break;
4312:
4313: if (NULL != cp) {
4314: /*
4315: * A match has been found.
4316: * Append the match to the array and move
4317: * forward by its keysize.
4318: */
1.207 schwarze 4319: res = mandoc_realloc(res,
4320: ssz + cp->val.sz + 1);
1.166 kristaps 4321: memcpy(res + ssz, cp->val.p, cp->val.sz);
4322: ssz += cp->val.sz;
4323: p += (int)cp->key.sz;
1.164 kristaps 4324: continue;
4325: }
4326:
1.167 kristaps 4327: /*
4328: * Handle escapes carefully: we need to copy
4329: * over just the escape itself, or else we might
4330: * do replacements within the escape itself.
4331: * Make sure to pass along the bogus string.
4332: */
4333: pp = p++;
4334: esc = mandoc_escape(&p, NULL, NULL);
4335: if (ESCAPE_ERROR == esc) {
4336: sz = strlen(pp);
1.164 kristaps 4337: res = mandoc_realloc(res, ssz + sz + 1);
4338: memcpy(res + ssz, pp, sz);
1.167 kristaps 4339: break;
1.164 kristaps 4340: }
1.207 schwarze 4341: /*
4342: * We bail out on bad escapes.
1.167 kristaps 4343: * No need to warn: we already did so when
1.355 schwarze 4344: * roff_expand() was called.
1.167 kristaps 4345: */
4346: sz = (int)(p - pp);
4347: res = mandoc_realloc(res, ssz + sz + 1);
4348: memcpy(res + ssz, pp, sz);
4349: ssz += sz;
1.164 kristaps 4350: }
4351:
4352: res[(int)ssz] = '\0';
1.277 schwarze 4353: return res;
1.227 schwarze 4354: }
4355:
4356: int
4357: roff_getformat(const struct roff *r)
4358: {
4359:
1.277 schwarze 4360: return r->format;
1.174 kristaps 4361: }
4362:
4363: /*
1.207 schwarze 4364: * Find out whether a line is a macro line or not.
1.174 kristaps 4365: * If it is, adjust the current position and return one; if it isn't,
4366: * return zero and don't change the current position.
4367: * If the control character has been set with `.cc', then let that grain
4368: * precedence.
1.396 schwarze 4369: * This is slightly contrary to groff, where using the non-breaking
1.174 kristaps 4370: * control character when `cc' has been invoked will cause the
4371: * non-breaking macro contents to be printed verbatim.
4372: */
4373: int
4374: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
4375: {
4376: int pos;
4377:
4378: pos = *ppos;
4379:
1.303 schwarze 4380: if (r->control != '\0' && cp[pos] == r->control)
1.174 kristaps 4381: pos++;
1.303 schwarze 4382: else if (r->control != '\0')
1.277 schwarze 4383: return 0;
1.174 kristaps 4384: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
4385: pos += 2;
4386: else if ('.' == cp[pos] || '\'' == cp[pos])
4387: pos++;
4388: else
1.277 schwarze 4389: return 0;
1.174 kristaps 4390:
4391: while (' ' == cp[pos] || '\t' == cp[pos])
4392: pos++;
4393:
4394: *ppos = pos;
1.277 schwarze 4395: return 1;
1.74 kristaps 4396: }
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