Annotation of mandoc/roff.c, Revision 1.395
1.395 ! schwarze 1: /* $Id: roff.c,v 1.394 2022/06/07 09:41:59 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) {
1390: if (ec != ASCII_ESC && buf->buf[pos] == '\\') {
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: /*
1452: * If not overriden,
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 '\\':
1.395 ! schwarze 1635: /*
! 1636: * Signal to roff_expand() that an escape
! 1637: * sequence resulted from copy-in processing
! 1638: * and needs to be checked or interpolated.
! 1639: */
! 1640: cp[-pairs] = ASCII_ESC;
1.355 schwarze 1641: newesc = 1;
1.353 schwarze 1642: pairs++;
1643: cp++;
1644: break;
1645: case ' ':
1646: /* Skip escaped blanks. */
1647: if (0 == quoted)
1648: cp++;
1649: break;
1650: default:
1651: break;
1652: }
1653: } else if (0 == quoted) {
1654: if (' ' == cp[0]) {
1655: /* Unescaped blanks end unquoted args. */
1656: white = 1;
1657: break;
1658: }
1659: } else if ('"' == cp[0]) {
1660: if ('"' == cp[1]) {
1661: /* Quoted quotes collapse. */
1662: pairs++;
1663: cp++;
1664: } else {
1665: /* Unquoted quotes end quoted args. */
1666: quoted = 2;
1667: break;
1668: }
1669: }
1670: }
1671:
1672: /* Quoted argument without a closing quote. */
1673: if (1 == quoted)
1674: mandoc_msg(MANDOCERR_ARG_QUOTE, ln, *pos, NULL);
1675:
1676: /* NUL-terminate this argument and move to the next one. */
1677: if (pairs)
1678: cp[-pairs] = '\0';
1679: if ('\0' != *cp) {
1680: *cp++ = '\0';
1681: while (' ' == *cp)
1682: cp++;
1683: }
1684: *pos += (int)(cp - start) + (quoted ? 1 : 0);
1685: *cpp = cp;
1686:
1687: if ('\0' == *cp && (white || ' ' == cp[-1]))
1688: mandoc_msg(MANDOCERR_SPACE_EOL, ln, *pos, NULL);
1689:
1.355 schwarze 1690: start = mandoc_strdup(start);
1691: if (newesc == 0)
1692: return start;
1693:
1694: buf.buf = start;
1695: buf.sz = strlen(start) + 1;
1696: buf.next = NULL;
1697: if (roff_expand(r, &buf, ln, 0, ASCII_ESC) & ROFF_IGN) {
1698: free(buf.buf);
1699: buf.buf = mandoc_strdup("");
1700: }
1701: return buf.buf;
1.353 schwarze 1702: }
1703:
1.154 kristaps 1704:
1705: /*
1.275 schwarze 1706: * Process text streams.
1.154 kristaps 1707: */
1.340 schwarze 1708: static int
1.305 schwarze 1709: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.154 kristaps 1710: {
1711: size_t sz;
1712: const char *start;
1.178 schwarze 1713: char *p;
1714: int isz;
1.154 kristaps 1715: enum mandoc_esc esc;
1716:
1.275 schwarze 1717: /* Spring the input line trap. */
1718:
1719: if (roffit_lines == 1) {
1720: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1721: free(buf->buf);
1722: buf->buf = p;
1723: buf->sz = isz + 1;
1724: *offs = 0;
1725: free(roffit_macro);
1726: roffit_lines = 0;
1.277 schwarze 1727: return ROFF_REPARSE;
1.275 schwarze 1728: } else if (roffit_lines > 1)
1729: --roffit_lines;
1730:
1.305 schwarze 1731: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1732: if (roffce_lines < 1) {
1733: r->man->last = roffce_node;
1734: r->man->next = ROFF_NEXT_SIBLING;
1735: roffce_lines = 0;
1736: roffce_node = NULL;
1737: } else
1738: roffce_lines--;
1739: }
1740:
1.275 schwarze 1741: /* Convert all breakable hyphens into ASCII_HYPH. */
1742:
1.238 schwarze 1743: start = p = buf->buf + pos;
1.154 kristaps 1744:
1.238 schwarze 1745: while (*p != '\0') {
1.154 kristaps 1746: sz = strcspn(p, "-\\");
1747: p += sz;
1748:
1.238 schwarze 1749: if (*p == '\0')
1.159 kristaps 1750: break;
1751:
1.238 schwarze 1752: if (*p == '\\') {
1.154 kristaps 1753: /* Skip over escapes. */
1754: p++;
1.189 schwarze 1755: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.238 schwarze 1756: if (esc == ESCAPE_ERROR)
1.154 kristaps 1757: break;
1.264 schwarze 1758: while (*p == '-')
1759: p++;
1.155 kristaps 1760: continue;
1.159 kristaps 1761: } else if (p == start) {
1.158 kristaps 1762: p++;
1.155 kristaps 1763: continue;
1.158 kristaps 1764: }
1.155 kristaps 1765:
1.171 schwarze 1766: if (isalpha((unsigned char)p[-1]) &&
1767: isalpha((unsigned char)p[1]))
1.155 kristaps 1768: *p = ASCII_HYPH;
1769: p++;
1.94 kristaps 1770: }
1.277 schwarze 1771: return ROFF_CONT;
1.94 kristaps 1772: }
1773:
1.340 schwarze 1774: int
1.377 schwarze 1775: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs, size_t len)
1.67 kristaps 1776: {
1.294 schwarze 1777: enum roff_tok t;
1.340 schwarze 1778: int e;
1.238 schwarze 1779: int pos; /* parse point */
1.243 schwarze 1780: int spos; /* saved parse point for messages */
1.238 schwarze 1781: int ppos; /* original offset in buf->buf */
1782: int ctl; /* macro line (boolean) */
1783:
1784: ppos = pos = *offs;
1.377 schwarze 1785:
1786: if (len > 80 && r->tbl == NULL && r->eqn == NULL &&
1787: (r->man->flags & ROFF_NOFILL) == 0 &&
1788: strchr(" .\\", buf->buf[pos]) == NULL &&
1789: buf->buf[pos] != r->control &&
1790: strcspn(buf->buf, " ") < 80)
1791: mandoc_msg(MANDOCERR_TEXT_LONG, ln, (int)len - 1,
1792: "%.20s...", buf->buf + pos);
1.79 kristaps 1793:
1.230 schwarze 1794: /* Handle in-line equation delimiters. */
1795:
1.236 schwarze 1796: if (r->tbl == NULL &&
1797: r->last_eqn != NULL && r->last_eqn->delim &&
1.230 schwarze 1798: (r->eqn == NULL || r->eqn_inline)) {
1.238 schwarze 1799: e = roff_eqndelim(r, buf, pos);
1.230 schwarze 1800: if (e == ROFF_REPARSE)
1.277 schwarze 1801: return e;
1.230 schwarze 1802: assert(e == ROFF_CONT);
1803: }
1804:
1.387 schwarze 1805: /* Handle comments and escape sequences. */
1806:
1807: e = roff_parse_comment(r, buf, ln, pos, r->escape);
1808: if ((e & ROFF_MASK) == ROFF_IGN)
1809: return e;
1810: assert(e == ROFF_CONT);
1.94 kristaps 1811:
1.355 schwarze 1812: e = roff_expand(r, buf, ln, pos, r->escape);
1.340 schwarze 1813: if ((e & ROFF_MASK) == ROFF_IGN)
1.277 schwarze 1814: return e;
1.238 schwarze 1815: assert(e == ROFF_CONT);
1.94 kristaps 1816:
1.238 schwarze 1817: ctl = roff_getcontrol(r, buf->buf, &pos);
1.130 kristaps 1818:
1.94 kristaps 1819: /*
1.79 kristaps 1820: * First, if a scope is open and we're not a macro, pass the
1.252 schwarze 1821: * text through the macro's filter.
1822: * Equations process all content themselves.
1823: * Tables process almost all content themselves, but we want
1824: * to warn about macros before passing it there.
1.79 kristaps 1825: */
1.74 kristaps 1826:
1.252 schwarze 1827: if (r->last != NULL && ! ctl) {
1.78 kristaps 1828: t = r->last->tok;
1.238 schwarze 1829: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.340 schwarze 1830: if ((e & ROFF_MASK) == ROFF_IGN)
1.277 schwarze 1831: return e;
1.340 schwarze 1832: e &= ~ROFF_MASK;
1833: } else
1834: e = ROFF_IGN;
1.319 schwarze 1835: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1836: eqn_read(r->eqn, buf->buf + ppos);
1.340 schwarze 1837: return e;
1.319 schwarze 1838: }
1.321 schwarze 1839: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1840: tbl_read(r->tbl, ln, buf->buf, ppos);
1.346 schwarze 1841: roff_addtbl(r->man, ln, r->tbl);
1.340 schwarze 1842: return e;
1.321 schwarze 1843: }
1.367 schwarze 1844: if ( ! ctl) {
1845: r->options &= ~MPARSE_COMMENT;
1.340 schwarze 1846: return roff_parsetext(r, buf, pos, offs) | e;
1.367 schwarze 1847: }
1.228 schwarze 1848:
1849: /* Skip empty request lines. */
1850:
1.238 schwarze 1851: if (buf->buf[pos] == '"') {
1.350 schwarze 1852: mandoc_msg(MANDOCERR_COMMENT_BAD, ln, pos, NULL);
1.277 schwarze 1853: return ROFF_IGN;
1.238 schwarze 1854: } else if (buf->buf[pos] == '\0')
1.277 schwarze 1855: return ROFF_IGN;
1.67 kristaps 1856:
1.79 kristaps 1857: /*
1858: * If a scope is open, go to the child handler for that macro,
1859: * as it may want to preprocess before doing anything with it.
1860: */
1.78 kristaps 1861:
1.79 kristaps 1862: if (r->last) {
1863: t = r->last->tok;
1.277 schwarze 1864: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1865: }
1.78 kristaps 1866:
1.367 schwarze 1867: r->options &= ~MPARSE_COMMENT;
1.243 schwarze 1868: spos = pos;
1869: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.386 schwarze 1870: return roff_req_or_macro(r, t, buf, ln, spos, pos, offs);
1871: }
1872:
1873: /*
1874: * Handle a new request or macro.
1875: * May be called outside any scope or from inside a conditional scope.
1876: */
1877: static int
1878: roff_req_or_macro(ROFF_ARGS) {
1.243 schwarze 1879:
1.386 schwarze 1880: /* For now, tables ignore most macros and some request. */
1.243 schwarze 1881:
1.386 schwarze 1882: if (r->tbl != NULL && (tok == TOKEN_NONE || tok == ROFF_TS ||
1883: tok == ROFF_br || tok == ROFF_ce || tok == ROFF_rj ||
1884: tok == ROFF_sp)) {
1.350 schwarze 1885: mandoc_msg(MANDOCERR_TBLMACRO,
1.386 schwarze 1886: ln, ppos, "%s", buf->buf + ppos);
1887: if (tok != TOKEN_NONE)
1.277 schwarze 1888: return ROFF_IGN;
1.257 schwarze 1889: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1890: pos++;
1.291 schwarze 1891: while (buf->buf[pos] == ' ')
1.257 schwarze 1892: pos++;
1.321 schwarze 1893: tbl_read(r->tbl, ln, buf->buf, pos);
1.346 schwarze 1894: roff_addtbl(r->man, ln, r->tbl);
1.321 schwarze 1895: return ROFF_IGN;
1.243 schwarze 1896: }
1897:
1.305 schwarze 1898: /* For now, let high level macros abort .ce mode. */
1899:
1.386 schwarze 1900: if (roffce_node != NULL &&
1901: (tok == TOKEN_NONE || tok == ROFF_Dd || tok == ROFF_EQ ||
1902: tok == ROFF_TH || tok == ROFF_TS)) {
1.305 schwarze 1903: r->man->last = roffce_node;
1904: r->man->next = ROFF_NEXT_SIBLING;
1905: roffce_lines = 0;
1906: roffce_node = NULL;
1907: }
1908:
1.79 kristaps 1909: /*
1.243 schwarze 1910: * This is neither a roff request nor a user-defined macro.
1911: * Let the standard macro set parsers handle it.
1.79 kristaps 1912: */
1.67 kristaps 1913:
1.386 schwarze 1914: if (tok == TOKEN_NONE)
1.277 schwarze 1915: return ROFF_CONT;
1.243 schwarze 1916:
1.386 schwarze 1917: /* Execute a roff request or a user-defined macro. */
1.67 kristaps 1918:
1.386 schwarze 1919: return (*roffs[tok].proc)(r, tok, buf, ln, ppos, pos, offs);
1.74 kristaps 1920: }
1921:
1.339 schwarze 1922: /*
1923: * Internal interface function to tell the roff parser that execution
1924: * of the current macro ended. This is required because macro
1925: * definitions usually do not end with a .return request.
1926: */
1927: void
1928: roff_userret(struct roff *r)
1929: {
1930: struct mctx *ctx;
1931: int i;
1932:
1933: assert(r->mstackpos >= 0);
1934: ctx = r->mstack + r->mstackpos;
1935: for (i = 0; i < ctx->argc; i++)
1936: free(ctx->argv[i]);
1937: ctx->argc = 0;
1938: r->mstackpos--;
1939: }
1940:
1.117 kristaps 1941: void
1.74 kristaps 1942: roff_endparse(struct roff *r)
1943: {
1.321 schwarze 1944: if (r->last != NULL)
1.350 schwarze 1945: mandoc_msg(MANDOCERR_BLK_NOEND, r->last->line,
1946: r->last->col, "%s", roff_name[r->last->tok]);
1.117 kristaps 1947:
1.321 schwarze 1948: if (r->eqn != NULL) {
1.350 schwarze 1949: mandoc_msg(MANDOCERR_BLK_NOEND,
1.319 schwarze 1950: r->eqn->node->line, r->eqn->node->pos, "EQ");
1951: eqn_parse(r->eqn);
1952: r->eqn = NULL;
1.125 kristaps 1953: }
1954:
1.321 schwarze 1955: if (r->tbl != NULL) {
1.346 schwarze 1956: tbl_end(r->tbl, 1);
1.321 schwarze 1957: r->tbl = NULL;
1.117 kristaps 1958: }
1.67 kristaps 1959: }
1960:
1961: /*
1.386 schwarze 1962: * Parse the request or macro name at buf[*pos].
1963: * Return ROFF_RENAMED, ROFF_USERDEF, or a ROFF_* token value.
1964: * For empty, undefined, mdoc(7), and man(7) macros, return TOKEN_NONE.
1965: * As a side effect, set r->current_string to the definition or to NULL.
1.67 kristaps 1966: */
1.294 schwarze 1967: static enum roff_tok
1.214 schwarze 1968: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.67 kristaps 1969: {
1.214 schwarze 1970: char *cp;
1.106 kristaps 1971: const char *mac;
1972: size_t maclen;
1.315 schwarze 1973: int deftype;
1.294 schwarze 1974: enum roff_tok t;
1.67 kristaps 1975:
1.214 schwarze 1976: cp = buf + *pos;
1977:
1978: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.294 schwarze 1979: return TOKEN_NONE;
1.67 kristaps 1980:
1.214 schwarze 1981: mac = cp;
1982: maclen = roff_getname(r, &cp, ln, ppos);
1.67 kristaps 1983:
1.315 schwarze 1984: deftype = ROFFDEF_USER | ROFFDEF_REN;
1985: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
1986: switch (deftype) {
1987: case ROFFDEF_USER:
1988: t = ROFF_USERDEF;
1989: break;
1990: case ROFFDEF_REN:
1991: t = ROFF_RENAMED;
1992: break;
1993: default:
1994: t = roffhash_find(r->reqtab, mac, maclen);
1995: break;
1996: }
1.294 schwarze 1997: if (t != TOKEN_NONE)
1.214 schwarze 1998: *pos = cp - buf;
1.325 schwarze 1999: else if (deftype == ROFFDEF_UNDEF) {
2000: /* Using an undefined macro defines it to be empty. */
2001: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
2002: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
2003: }
1.277 schwarze 2004: return t;
1.67 kristaps 2005: }
2006:
1.266 schwarze 2007: /* --- handling of request blocks ----------------------------------------- */
2008:
1.375 schwarze 2009: /*
2010: * Close a macro definition block or an "ignore" block.
2011: */
1.340 schwarze 2012: static int
1.76 kristaps 2013: roff_cblock(ROFF_ARGS)
1.67 kristaps 2014: {
1.375 schwarze 2015: int rr;
1.79 kristaps 2016:
1.238 schwarze 2017: if (r->last == NULL) {
1.350 schwarze 2018: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.277 schwarze 2019: return ROFF_IGN;
1.76 kristaps 2020: }
1.67 kristaps 2021:
1.81 kristaps 2022: switch (r->last->tok) {
1.207 schwarze 2023: case ROFF_am:
2024: case ROFF_ami:
2025: case ROFF_de:
2026: case ROFF_dei:
2027: case ROFF_ig:
1.81 kristaps 2028: break;
1.375 schwarze 2029: case ROFF_am1:
2030: case ROFF_de1:
2031: /* Remapped in roff_block(). */
2032: abort();
1.81 kristaps 2033: default:
1.350 schwarze 2034: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.277 schwarze 2035: return ROFF_IGN;
1.76 kristaps 2036: }
1.67 kristaps 2037:
1.375 schwarze 2038: roffnode_pop(r);
2039: roffnode_cleanscope(r);
2040:
2041: /*
2042: * If a conditional block with braces is still open,
2043: * check for "\}" block end markers.
2044: */
2045:
2046: if (r->last != NULL && r->last->endspan < 0) {
2047: rr = 1; /* If arguments follow "\}", warn about them. */
2048: roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
2049: }
2050:
1.238 schwarze 2051: if (buf->buf[pos] != '\0')
1.350 schwarze 2052: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.238 schwarze 2053: ".. %s", buf->buf + pos);
1.71 kristaps 2054:
1.277 schwarze 2055: return ROFF_IGN;
1.67 kristaps 2056: }
2057:
1.364 schwarze 2058: /*
2059: * Pop all nodes ending at the end of the current input line.
2060: * Return the number of loops ended.
2061: */
1.340 schwarze 2062: static int
1.76 kristaps 2063: roffnode_cleanscope(struct roff *r)
1.67 kristaps 2064: {
1.340 schwarze 2065: int inloop;
1.67 kristaps 2066:
1.340 schwarze 2067: inloop = 0;
1.375 schwarze 2068: while (r->last != NULL && r->last->endspan > 0) {
1.173 schwarze 2069: if (--r->last->endspan != 0)
1.76 kristaps 2070: break;
1.340 schwarze 2071: inloop += roffnode_pop(r);
1.76 kristaps 2072: }
1.340 schwarze 2073: return inloop;
1.67 kristaps 2074: }
2075:
1.364 schwarze 2076: /*
1.375 schwarze 2077: * Handle the closing "\}" of a conditional block.
1.364 schwarze 2078: * Apart from generating warnings, this only pops nodes.
2079: * Return the number of loops ended.
2080: */
1.340 schwarze 2081: static int
1.195 schwarze 2082: roff_ccond(struct roff *r, int ln, int ppos)
1.74 kristaps 2083: {
1.76 kristaps 2084: if (NULL == r->last) {
1.350 schwarze 2085: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 2086: return 0;
1.76 kristaps 2087: }
2088:
1.82 kristaps 2089: switch (r->last->tok) {
1.207 schwarze 2090: case ROFF_el:
2091: case ROFF_ie:
2092: case ROFF_if:
1.340 schwarze 2093: case ROFF_while:
1.82 kristaps 2094: break;
2095: default:
1.350 schwarze 2096: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 2097: return 0;
1.75 kristaps 2098: }
2099:
1.76 kristaps 2100: if (r->last->endspan > -1) {
1.350 schwarze 2101: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 2102: return 0;
1.76 kristaps 2103: }
2104:
1.340 schwarze 2105: return roffnode_pop(r) + roffnode_cleanscope(r);
1.76 kristaps 2106: }
2107:
1.340 schwarze 2108: static int
1.80 kristaps 2109: roff_block(ROFF_ARGS)
1.76 kristaps 2110: {
1.315 schwarze 2111: const char *name, *value;
2112: char *call, *cp, *iname, *rname;
2113: size_t csz, namesz, rsz;
2114: int deftype;
1.106 kristaps 2115:
1.220 schwarze 2116: /* Ignore groff compatibility mode for now. */
1.76 kristaps 2117:
1.238 schwarze 2118: if (tok == ROFF_de1)
1.220 schwarze 2119: tok = ROFF_de;
1.251 schwarze 2120: else if (tok == ROFF_dei1)
2121: tok = ROFF_dei;
1.238 schwarze 2122: else if (tok == ROFF_am1)
1.220 schwarze 2123: tok = ROFF_am;
1.251 schwarze 2124: else if (tok == ROFF_ami1)
2125: tok = ROFF_ami;
1.220 schwarze 2126:
2127: /* Parse the macro name argument. */
2128:
1.238 schwarze 2129: cp = buf->buf + pos;
2130: if (tok == ROFF_ig) {
1.220 schwarze 2131: iname = NULL;
2132: namesz = 0;
2133: } else {
2134: iname = cp;
2135: namesz = roff_getname(r, &cp, ln, ppos);
2136: iname[namesz] = '\0';
2137: }
1.107 kristaps 2138:
1.220 schwarze 2139: /* Resolve the macro name argument if it is indirect. */
1.107 kristaps 2140:
1.238 schwarze 2141: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 2142: deftype = ROFFDEF_USER;
2143: name = roff_getstrn(r, iname, namesz, &deftype);
2144: if (name == NULL) {
1.350 schwarze 2145: mandoc_msg(MANDOCERR_STR_UNDEF,
2146: ln, (int)(iname - buf->buf),
1.220 schwarze 2147: "%.*s", (int)namesz, iname);
2148: namesz = 0;
2149: } else
2150: namesz = strlen(name);
2151: } else
2152: name = iname;
1.107 kristaps 2153:
1.238 schwarze 2154: if (namesz == 0 && tok != ROFF_ig) {
1.350 schwarze 2155: mandoc_msg(MANDOCERR_REQ_EMPTY,
2156: ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2157: return ROFF_IGN;
1.220 schwarze 2158: }
1.80 kristaps 2159:
1.106 kristaps 2160: roffnode_push(r, tok, name, ln, ppos);
2161:
2162: /*
2163: * At the beginning of a `de' macro, clear the existing string
2164: * with the same name, if there is one. New content will be
1.193 schwarze 2165: * appended from roff_block_text() in multiline mode.
1.106 kristaps 2166: */
1.107 kristaps 2167:
1.311 schwarze 2168: if (tok == ROFF_de || tok == ROFF_dei) {
1.213 schwarze 2169: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.311 schwarze 2170: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.315 schwarze 2171: } else if (tok == ROFF_am || tok == ROFF_ami) {
2172: deftype = ROFFDEF_ANY;
2173: value = roff_getstrn(r, iname, namesz, &deftype);
2174: switch (deftype) { /* Before appending, ... */
2175: case ROFFDEF_PRE: /* copy predefined to user-defined. */
2176: roff_setstrn(&r->strtab, name, namesz,
2177: value, strlen(value), 0);
2178: break;
2179: case ROFFDEF_REN: /* call original standard macro. */
2180: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2181: (int)strlen(value), value);
2182: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2183: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
2184: free(call);
2185: break;
2186: case ROFFDEF_STD: /* rename and call standard macro. */
2187: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
2188: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
2189: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2190: (int)rsz, rname);
2191: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2192: free(call);
2193: free(rname);
2194: break;
2195: default:
2196: break;
2197: }
1.311 schwarze 2198: }
1.76 kristaps 2199:
1.238 schwarze 2200: if (*cp == '\0')
1.277 schwarze 2201: return ROFF_IGN;
1.78 kristaps 2202:
1.220 schwarze 2203: /* Get the custom end marker. */
1.107 kristaps 2204:
1.220 schwarze 2205: iname = cp;
1.213 schwarze 2206: namesz = roff_getname(r, &cp, ln, ppos);
1.220 schwarze 2207:
2208: /* Resolve the end marker if it is indirect. */
2209:
1.238 schwarze 2210: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 2211: deftype = ROFFDEF_USER;
2212: name = roff_getstrn(r, iname, namesz, &deftype);
2213: if (name == NULL) {
1.350 schwarze 2214: mandoc_msg(MANDOCERR_STR_UNDEF,
2215: ln, (int)(iname - buf->buf),
1.220 schwarze 2216: "%.*s", (int)namesz, iname);
2217: namesz = 0;
2218: } else
2219: namesz = strlen(name);
2220: } else
2221: name = iname;
2222:
1.213 schwarze 2223: if (namesz)
2224: r->last->end = mandoc_strndup(name, namesz);
1.78 kristaps 2225:
1.238 schwarze 2226: if (*cp != '\0')
1.350 schwarze 2227: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.295 schwarze 2228: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.74 kristaps 2229:
1.277 schwarze 2230: return ROFF_IGN;
1.78 kristaps 2231: }
2232:
1.340 schwarze 2233: static int
1.80 kristaps 2234: roff_block_sub(ROFF_ARGS)
1.79 kristaps 2235: {
1.294 schwarze 2236: enum roff_tok t;
1.79 kristaps 2237: int i, j;
2238:
2239: /*
1.385 schwarze 2240: * If a custom end marker is a user-defined or predefined macro
2241: * or a request, interpret it.
1.79 kristaps 2242: */
2243:
2244: if (r->last->end) {
1.130 kristaps 2245: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.238 schwarze 2246: if (buf->buf[i] != r->last->end[j])
1.79 kristaps 2247: break;
2248:
1.238 schwarze 2249: if (r->last->end[j] == '\0' &&
2250: (buf->buf[i] == '\0' ||
2251: buf->buf[i] == ' ' ||
2252: buf->buf[i] == '\t')) {
1.79 kristaps 2253: roffnode_pop(r);
2254: roffnode_cleanscope(r);
2255:
1.238 schwarze 2256: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.130 kristaps 2257: i++;
2258:
2259: pos = i;
1.238 schwarze 2260: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.294 schwarze 2261: TOKEN_NONE)
1.277 schwarze 2262: return ROFF_RERUN;
2263: return ROFF_IGN;
1.79 kristaps 2264: }
2265: }
2266:
1.385 schwarze 2267: /* Handle the standard end marker. */
1.79 kristaps 2268:
1.238 schwarze 2269: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.385 schwarze 2270: if (t == ROFF_cblock)
2271: return roff_cblock(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 2272:
1.385 schwarze 2273: /* Not an end marker, so append the line to the block. */
1.79 kristaps 2274:
1.385 schwarze 2275: if (tok != ROFF_ig)
2276: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
2277: return ROFF_IGN;
1.79 kristaps 2278: }
2279:
1.340 schwarze 2280: static int
1.80 kristaps 2281: roff_block_text(ROFF_ARGS)
1.78 kristaps 2282: {
2283:
1.238 schwarze 2284: if (tok != ROFF_ig)
2285: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.106 kristaps 2286:
1.277 schwarze 2287: return ROFF_IGN;
1.78 kristaps 2288: }
2289:
1.375 schwarze 2290: /*
2291: * Check for a closing "\}" and handle it.
2292: * In this function, the final "int *offs" argument is used for
2293: * different purposes than elsewhere:
2294: * Input: *offs == 0: caller wants to discard arguments following \}
2295: * *offs == 1: caller wants to preserve text following \}
2296: * Output: *offs = 0: tell caller to discard input line
2297: * *offs = 1: tell caller to use input line
2298: */
1.340 schwarze 2299: static int
1.375 schwarze 2300: roff_cond_checkend(ROFF_ARGS)
1.82 kristaps 2301: {
1.340 schwarze 2302: char *ep;
2303: int endloop, irc, rr;
1.82 kristaps 2304:
1.340 schwarze 2305: irc = ROFF_IGN;
1.82 kristaps 2306: rr = r->last->rule;
1.340 schwarze 2307: endloop = tok != ROFF_while ? ROFF_IGN :
2308: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2309: if (roffnode_cleanscope(r))
2310: irc |= endloop;
1.144 kristaps 2311:
1.196 schwarze 2312: /*
1.375 schwarze 2313: * If "\}" occurs on a macro line without a preceding macro or
2314: * a text line contains nothing else, drop the line completely.
1.196 schwarze 2315: */
2316:
1.238 schwarze 2317: ep = buf->buf + pos;
1.375 schwarze 2318: if (ep[0] == '\\' && ep[1] == '}' && (ep[2] == '\0' || *offs == 0))
1.198 schwarze 2319: rr = 0;
1.196 schwarze 2320:
1.343 schwarze 2321: /*
1.375 schwarze 2322: * The closing delimiter "\}" rewinds the conditional scope
1.343 schwarze 2323: * but is otherwise ignored when interpreting the line.
2324: */
1.144 kristaps 2325:
1.238 schwarze 2326: while ((ep = strchr(ep, '\\')) != NULL) {
1.318 schwarze 2327: switch (ep[1]) {
2328: case '}':
1.376 schwarze 2329: if (ep[2] == '\0')
2330: ep[0] = '\0';
2331: else if (rr)
1.375 schwarze 2332: ep[1] = '&';
2333: else
2334: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1.340 schwarze 2335: if (roff_ccond(r, ln, ep - buf->buf))
2336: irc |= endloop;
1.318 schwarze 2337: break;
2338: case '\0':
2339: ++ep;
2340: break;
2341: default:
2342: ep += 2;
2343: break;
1.197 schwarze 2344: }
1.177 schwarze 2345: }
1.375 schwarze 2346: *offs = rr;
2347: return irc;
2348: }
1.318 schwarze 2349:
1.375 schwarze 2350: /*
2351: * Parse and process a request or macro line in conditional scope.
2352: */
2353: static int
2354: roff_cond_sub(ROFF_ARGS)
2355: {
2356: struct roffnode *bl;
1.386 schwarze 2357: int irc, rr, spos;
1.375 schwarze 2358: enum roff_tok t;
2359:
2360: rr = 0; /* If arguments follow "\}", skip them. */
2361: irc = roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
1.386 schwarze 2362: spos = pos;
1.368 schwarze 2363: t = roff_parse(r, buf->buf, &pos, ln, ppos);
2364:
1.318 schwarze 2365: /*
1.386 schwarze 2366: * Handle requests and macros if the conditional evaluated
2367: * to true or if they are structurally required.
2368: * The .break request is always handled specially.
1.318 schwarze 2369: */
2370:
1.364 schwarze 2371: if (t == ROFF_break) {
2372: if (irc & ROFF_LOOPMASK)
2373: irc = ROFF_IGN | ROFF_LOOPEXIT;
2374: else if (rr) {
2375: for (bl = r->last; bl != NULL; bl = bl->parent) {
2376: bl->rule = 0;
2377: if (bl->tok == ROFF_while)
2378: break;
2379: }
2380: }
1.386 schwarze 2381: } else if (rr || (t < TOKEN_NONE && roffs[t].flags & ROFFMAC_STRUCT)) {
2382: irc |= roff_req_or_macro(r, t, buf, ln, spos, pos, offs);
1.383 schwarze 2383: if (irc & ROFF_WHILE)
2384: irc &= ~(ROFF_LOOPCONT | ROFF_LOOPEXIT);
1.386 schwarze 2385: }
1.340 schwarze 2386: return irc;
1.82 kristaps 2387: }
2388:
1.375 schwarze 2389: /*
2390: * Parse and process a text line in conditional scope.
2391: */
1.340 schwarze 2392: static int
1.82 kristaps 2393: roff_cond_text(ROFF_ARGS)
1.78 kristaps 2394: {
1.375 schwarze 2395: int irc, rr;
1.343 schwarze 2396:
1.375 schwarze 2397: rr = 1; /* If arguments follow "\}", preserve them. */
2398: irc = roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
1.340 schwarze 2399: if (rr)
2400: irc |= ROFF_CONT;
2401: return irc;
1.74 kristaps 2402: }
2403:
1.266 schwarze 2404: /* --- handling of numeric and conditional expressions -------------------- */
2405:
1.204 schwarze 2406: /*
2407: * Parse a single signed integer number. Stop at the first non-digit.
2408: * If there is at least one digit, return success and advance the
2409: * parse point, else return failure and let the parse point unchanged.
2410: * Ignore overflows, treat them just like the C language.
2411: */
1.184 schwarze 2412: static int
1.261 schwarze 2413: roff_getnum(const char *v, int *pos, int *res, int flags)
1.184 schwarze 2414: {
1.261 schwarze 2415: int myres, scaled, n, p;
1.206 schwarze 2416:
2417: if (NULL == res)
2418: res = &myres;
1.184 schwarze 2419:
2420: p = *pos;
2421: n = v[p] == '-';
1.261 schwarze 2422: if (n || v[p] == '+')
1.184 schwarze 2423: p++;
2424:
1.261 schwarze 2425: if (flags & ROFFNUM_WHITE)
2426: while (isspace((unsigned char)v[p]))
2427: p++;
2428:
1.184 schwarze 2429: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.204 schwarze 2430: *res = 10 * *res + v[p] - '0';
1.184 schwarze 2431: if (p == *pos + n)
2432: return 0;
2433:
2434: if (n)
2435: *res = -*res;
2436:
1.254 schwarze 2437: /* Each number may be followed by one optional scaling unit. */
2438:
2439: switch (v[p]) {
2440: case 'f':
1.261 schwarze 2441: scaled = *res * 65536;
1.254 schwarze 2442: break;
2443: case 'i':
1.261 schwarze 2444: scaled = *res * 240;
1.254 schwarze 2445: break;
2446: case 'c':
1.261 schwarze 2447: scaled = *res * 240 / 2.54;
1.254 schwarze 2448: break;
2449: case 'v':
2450: case 'P':
1.261 schwarze 2451: scaled = *res * 40;
1.254 schwarze 2452: break;
2453: case 'm':
2454: case 'n':
1.261 schwarze 2455: scaled = *res * 24;
1.254 schwarze 2456: break;
2457: case 'p':
1.261 schwarze 2458: scaled = *res * 10 / 3;
1.254 schwarze 2459: break;
2460: case 'u':
1.261 schwarze 2461: scaled = *res;
1.254 schwarze 2462: break;
2463: case 'M':
1.261 schwarze 2464: scaled = *res * 6 / 25;
1.254 schwarze 2465: break;
2466: default:
1.261 schwarze 2467: scaled = *res;
1.254 schwarze 2468: p--;
2469: break;
2470: }
1.261 schwarze 2471: if (flags & ROFFNUM_SCALE)
2472: *res = scaled;
1.254 schwarze 2473:
2474: *pos = p + 1;
1.277 schwarze 2475: return 1;
1.184 schwarze 2476: }
2477:
1.198 schwarze 2478: /*
2479: * Evaluate a string comparison condition.
2480: * The first character is the delimiter.
2481: * Succeed if the string up to its second occurrence
2482: * matches the string up to its third occurence.
2483: * Advance the cursor after the third occurrence
2484: * or lacking that, to the end of the line.
2485: */
2486: static int
2487: roff_evalstrcond(const char *v, int *pos)
2488: {
2489: const char *s1, *s2, *s3;
2490: int match;
2491:
2492: match = 0;
2493: s1 = v + *pos; /* initial delimiter */
2494: s2 = s1 + 1; /* for scanning the first string */
2495: s3 = strchr(s2, *s1); /* for scanning the second string */
2496:
2497: if (NULL == s3) /* found no middle delimiter */
2498: goto out;
2499:
2500: while ('\0' != *++s3) {
2501: if (*s2 != *s3) { /* mismatch */
2502: s3 = strchr(s3, *s1);
2503: break;
2504: }
2505: if (*s3 == *s1) { /* found the final delimiter */
2506: match = 1;
2507: break;
2508: }
2509: s2++;
2510: }
2511:
2512: out:
2513: if (NULL == s3)
2514: s3 = strchr(s2, '\0');
1.242 schwarze 2515: else if (*s3 != '\0')
1.198 schwarze 2516: s3++;
2517: *pos = s3 - v;
1.277 schwarze 2518: return match;
1.198 schwarze 2519: }
2520:
1.204 schwarze 2521: /*
2522: * Evaluate an optionally negated single character, numerical,
2523: * or string condition.
2524: */
1.198 schwarze 2525: static int
1.271 schwarze 2526: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.88 kristaps 2527: {
1.336 schwarze 2528: const char *start, *end;
2529: char *cp, *name;
2530: size_t sz;
2531: int deftype, len, number, savepos, istrue, wanttrue;
1.88 kristaps 2532:
1.198 schwarze 2533: if ('!' == v[*pos]) {
2534: wanttrue = 0;
2535: (*pos)++;
2536: } else
2537: wanttrue = 1;
2538:
1.88 kristaps 2539: switch (v[*pos]) {
1.240 schwarze 2540: case '\0':
1.277 schwarze 2541: return 0;
1.207 schwarze 2542: case 'n':
2543: case 'o':
1.88 kristaps 2544: (*pos)++;
1.277 schwarze 2545: return wanttrue;
1.207 schwarze 2546: case 'e':
2547: case 't':
1.239 schwarze 2548: case 'v':
1.88 kristaps 2549: (*pos)++;
1.277 schwarze 2550: return !wanttrue;
1.336 schwarze 2551: case 'c':
2552: do {
2553: (*pos)++;
2554: } while (v[*pos] == ' ');
2555:
2556: /*
2557: * Quirk for groff compatibility:
2558: * The horizontal tab is neither available nor unavailable.
2559: */
2560:
2561: if (v[*pos] == '\t') {
2562: (*pos)++;
2563: return 0;
2564: }
2565:
2566: /* Printable ASCII characters are available. */
2567:
2568: if (v[*pos] != '\\') {
2569: (*pos)++;
2570: return wanttrue;
2571: }
2572:
2573: end = v + ++*pos;
2574: switch (mandoc_escape(&end, &start, &len)) {
2575: case ESCAPE_SPECIAL:
2576: istrue = mchars_spec2cp(start, len) != -1;
2577: break;
2578: case ESCAPE_UNICODE:
2579: istrue = 1;
2580: break;
2581: case ESCAPE_NUMBERED:
2582: istrue = mchars_num2char(start, len) != -1;
2583: break;
2584: default:
2585: istrue = !wanttrue;
2586: break;
2587: }
2588: *pos = end - v;
2589: return istrue == wanttrue;
1.310 schwarze 2590: case 'd':
1.271 schwarze 2591: case 'r':
1.310 schwarze 2592: cp = v + *pos + 1;
2593: while (*cp == ' ')
2594: cp++;
2595: name = cp;
2596: sz = roff_getname(r, &cp, ln, cp - v);
1.315 schwarze 2597: if (sz == 0)
2598: istrue = 0;
2599: else if (v[*pos] == 'r')
2600: istrue = roff_hasregn(r, name, sz);
2601: else {
2602: deftype = ROFFDEF_ANY;
2603: roff_getstrn(r, name, sz, &deftype);
2604: istrue = !!deftype;
2605: }
1.363 schwarze 2606: *pos = (name + sz) - v;
1.310 schwarze 2607: return istrue == wanttrue;
1.88 kristaps 2608: default:
2609: break;
2610: }
2611:
1.241 schwarze 2612: savepos = *pos;
1.261 schwarze 2613: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.277 schwarze 2614: return (number > 0) == wanttrue;
1.241 schwarze 2615: else if (*pos == savepos)
1.277 schwarze 2616: return roff_evalstrcond(v, pos) == wanttrue;
1.204 schwarze 2617: else
1.277 schwarze 2618: return 0;
1.88 kristaps 2619: }
2620:
1.340 schwarze 2621: static int
1.103 kristaps 2622: roff_line_ignore(ROFF_ARGS)
1.89 kristaps 2623: {
1.123 schwarze 2624:
1.277 schwarze 2625: return ROFF_IGN;
1.89 kristaps 2626: }
2627:
1.340 schwarze 2628: static int
1.251 schwarze 2629: roff_insec(ROFF_ARGS)
2630: {
2631:
1.350 schwarze 2632: mandoc_msg(MANDOCERR_REQ_INSEC, ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2633: return ROFF_IGN;
1.251 schwarze 2634: }
2635:
1.340 schwarze 2636: static int
1.251 schwarze 2637: roff_unsupp(ROFF_ARGS)
2638: {
2639:
1.350 schwarze 2640: mandoc_msg(MANDOCERR_REQ_UNSUPP, ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2641: return ROFF_IGN;
1.251 schwarze 2642: }
2643:
1.340 schwarze 2644: static int
1.82 kristaps 2645: roff_cond(ROFF_ARGS)
1.74 kristaps 2646: {
1.340 schwarze 2647: int irc;
1.173 schwarze 2648:
2649: roffnode_push(r, tok, NULL, ln, ppos);
1.74 kristaps 2650:
1.207 schwarze 2651: /*
1.134 kristaps 2652: * An `.el' has no conditional body: it will consume the value
2653: * of the current rstack entry set in prior `ie' calls or
1.207 schwarze 2654: * defaults to DENY.
1.134 kristaps 2655: *
2656: * If we're not an `el', however, then evaluate the conditional.
2657: */
1.133 kristaps 2658:
1.238 schwarze 2659: r->last->rule = tok == ROFF_el ?
1.207 schwarze 2660: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.238 schwarze 2661: roff_evalcond(r, ln, buf->buf, &pos);
1.77 kristaps 2662:
1.134 kristaps 2663: /*
2664: * An if-else will put the NEGATION of the current evaluated
2665: * conditional into the stack of rules.
2666: */
2667:
1.238 schwarze 2668: if (tok == ROFF_ie) {
1.223 schwarze 2669: if (r->rstackpos + 1 == r->rstacksz) {
2670: r->rstacksz += 16;
2671: r->rstack = mandoc_reallocarray(r->rstack,
2672: r->rstacksz, sizeof(int));
1.134 kristaps 2673: }
1.198 schwarze 2674: r->rstack[++r->rstackpos] = !r->last->rule;
1.82 kristaps 2675: }
1.88 kristaps 2676:
2677: /* If the parent has false as its rule, then so do we. */
2678:
1.198 schwarze 2679: if (r->last->parent && !r->last->parent->rule)
2680: r->last->rule = 0;
1.88 kristaps 2681:
2682: /*
1.173 schwarze 2683: * Determine scope.
2684: * If there is nothing on the line after the conditional,
2685: * not even whitespace, use next-line scope.
1.340 schwarze 2686: * Except that .while does not support next-line scope.
1.88 kristaps 2687: */
1.74 kristaps 2688:
1.340 schwarze 2689: if (buf->buf[pos] == '\0' && tok != ROFF_while) {
1.173 schwarze 2690: r->last->endspan = 2;
2691: goto out;
2692: }
2693:
1.238 schwarze 2694: while (buf->buf[pos] == ' ')
1.173 schwarze 2695: pos++;
2696:
2697: /* An opening brace requests multiline scope. */
1.75 kristaps 2698:
1.238 schwarze 2699: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.75 kristaps 2700: r->last->endspan = -1;
2701: pos += 2;
1.272 schwarze 2702: while (buf->buf[pos] == ' ')
2703: pos++;
1.173 schwarze 2704: goto out;
1.207 schwarze 2705: }
1.74 kristaps 2706:
1.77 kristaps 2707: /*
1.173 schwarze 2708: * Anything else following the conditional causes
2709: * single-line scope. Warn if the scope contains
2710: * nothing but trailing whitespace.
1.77 kristaps 2711: */
2712:
1.238 schwarze 2713: if (buf->buf[pos] == '\0')
1.350 schwarze 2714: mandoc_msg(MANDOCERR_COND_EMPTY,
2715: ln, ppos, "%s", roff_name[tok]);
1.77 kristaps 2716:
1.173 schwarze 2717: r->last->endspan = 1;
1.74 kristaps 2718:
1.173 schwarze 2719: out:
1.75 kristaps 2720: *offs = pos;
1.340 schwarze 2721: irc = ROFF_RERUN;
2722: if (tok == ROFF_while)
2723: irc |= ROFF_WHILE;
2724: return irc;
1.83 schwarze 2725: }
2726:
1.340 schwarze 2727: static int
1.92 schwarze 2728: roff_ds(ROFF_ARGS)
2729: {
1.212 schwarze 2730: char *string;
2731: const char *name;
2732: size_t namesz;
1.96 kristaps 2733:
1.251 schwarze 2734: /* Ignore groff compatibility mode for now. */
2735:
2736: if (tok == ROFF_ds1)
2737: tok = ROFF_ds;
2738: else if (tok == ROFF_as1)
2739: tok = ROFF_as;
2740:
1.96 kristaps 2741: /*
1.212 schwarze 2742: * The first word is the name of the string.
2743: * If it is empty or terminated by an escape sequence,
2744: * abort the `ds' request without defining anything.
1.96 kristaps 2745: */
1.92 schwarze 2746:
1.238 schwarze 2747: name = string = buf->buf + pos;
2748: if (*name == '\0')
1.277 schwarze 2749: return ROFF_IGN;
1.92 schwarze 2750:
1.212 schwarze 2751: namesz = roff_getname(r, &string, ln, pos);
1.363 schwarze 2752: switch (name[namesz]) {
2753: case '\\':
1.277 schwarze 2754: return ROFF_IGN;
1.363 schwarze 2755: case '\t':
2756: string = buf->buf + pos + namesz;
2757: break;
2758: default:
2759: break;
2760: }
1.212 schwarze 2761:
2762: /* Read past the initial double-quote, if any. */
1.238 schwarze 2763: if (*string == '"')
1.92 schwarze 2764: string++;
2765:
1.96 kristaps 2766: /* The rest is the value. */
1.212 schwarze 2767: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2768: ROFF_as == tok);
1.311 schwarze 2769: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.277 schwarze 2770: return ROFF_IGN;
1.92 schwarze 2771: }
2772:
1.204 schwarze 2773: /*
2774: * Parse a single operator, one or two characters long.
2775: * If the operator is recognized, return success and advance the
2776: * parse point, else return failure and let the parse point unchanged.
2777: */
2778: static int
2779: roff_getop(const char *v, int *pos, char *res)
2780: {
2781:
2782: *res = v[*pos];
2783:
2784: switch (*res) {
1.207 schwarze 2785: case '+':
2786: case '-':
2787: case '*':
2788: case '/':
2789: case '%':
2790: case '&':
2791: case ':':
1.204 schwarze 2792: break;
2793: case '<':
2794: switch (v[*pos + 1]) {
1.207 schwarze 2795: case '=':
1.204 schwarze 2796: *res = 'l';
2797: (*pos)++;
2798: break;
1.207 schwarze 2799: case '>':
1.204 schwarze 2800: *res = '!';
2801: (*pos)++;
2802: break;
1.207 schwarze 2803: case '?':
1.204 schwarze 2804: *res = 'i';
2805: (*pos)++;
2806: break;
2807: default:
2808: break;
2809: }
2810: break;
2811: case '>':
2812: switch (v[*pos + 1]) {
1.207 schwarze 2813: case '=':
1.204 schwarze 2814: *res = 'g';
2815: (*pos)++;
2816: break;
1.207 schwarze 2817: case '?':
1.204 schwarze 2818: *res = 'a';
2819: (*pos)++;
2820: break;
2821: default:
2822: break;
2823: }
2824: break;
2825: case '=':
2826: if ('=' == v[*pos + 1])
2827: (*pos)++;
2828: break;
2829: default:
1.277 schwarze 2830: return 0;
1.204 schwarze 2831: }
2832: (*pos)++;
2833:
1.277 schwarze 2834: return *res;
1.204 schwarze 2835: }
2836:
2837: /*
2838: * Evaluate either a parenthesized numeric expression
2839: * or a single signed integer number.
2840: */
2841: static int
1.235 schwarze 2842: roff_evalpar(struct roff *r, int ln,
1.261 schwarze 2843: const char *v, int *pos, int *res, int flags)
1.204 schwarze 2844: {
2845:
2846: if ('(' != v[*pos])
1.277 schwarze 2847: return roff_getnum(v, pos, res, flags);
1.204 schwarze 2848:
2849: (*pos)++;
1.261 schwarze 2850: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.277 schwarze 2851: return 0;
1.204 schwarze 2852:
1.206 schwarze 2853: /*
2854: * Omission of the closing parenthesis
2855: * is an error in validation mode,
2856: * but ignored in evaluation mode.
2857: */
2858:
1.204 schwarze 2859: if (')' == v[*pos])
2860: (*pos)++;
1.206 schwarze 2861: else if (NULL == res)
1.277 schwarze 2862: return 0;
1.204 schwarze 2863:
1.277 schwarze 2864: return 1;
1.204 schwarze 2865: }
2866:
2867: /*
2868: * Evaluate a complete numeric expression.
2869: * Proceed left to right, there is no concept of precedence.
2870: */
2871: static int
1.235 schwarze 2872: roff_evalnum(struct roff *r, int ln, const char *v,
1.261 schwarze 2873: int *pos, int *res, int flags)
1.204 schwarze 2874: {
2875: int mypos, operand2;
2876: char operator;
2877:
2878: if (NULL == pos) {
2879: mypos = 0;
2880: pos = &mypos;
2881: }
2882:
1.261 schwarze 2883: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2884: while (isspace((unsigned char)v[*pos]))
2885: (*pos)++;
2886:
1.261 schwarze 2887: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.277 schwarze 2888: return 0;
1.204 schwarze 2889:
2890: while (1) {
1.261 schwarze 2891: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2892: while (isspace((unsigned char)v[*pos]))
2893: (*pos)++;
2894:
2895: if ( ! roff_getop(v, pos, &operator))
2896: break;
2897:
1.261 schwarze 2898: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2899: while (isspace((unsigned char)v[*pos]))
2900: (*pos)++;
2901:
1.261 schwarze 2902: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.277 schwarze 2903: return 0;
1.204 schwarze 2904:
1.261 schwarze 2905: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2906: while (isspace((unsigned char)v[*pos]))
2907: (*pos)++;
1.206 schwarze 2908:
2909: if (NULL == res)
2910: continue;
1.204 schwarze 2911:
2912: switch (operator) {
1.207 schwarze 2913: case '+':
1.204 schwarze 2914: *res += operand2;
2915: break;
1.207 schwarze 2916: case '-':
1.204 schwarze 2917: *res -= operand2;
2918: break;
1.207 schwarze 2919: case '*':
1.204 schwarze 2920: *res *= operand2;
2921: break;
1.207 schwarze 2922: case '/':
1.244 schwarze 2923: if (operand2 == 0) {
1.235 schwarze 2924: mandoc_msg(MANDOCERR_DIVZERO,
1.350 schwarze 2925: ln, *pos, "%s", v);
1.234 kristaps 2926: *res = 0;
2927: break;
2928: }
1.204 schwarze 2929: *res /= operand2;
2930: break;
1.207 schwarze 2931: case '%':
1.244 schwarze 2932: if (operand2 == 0) {
2933: mandoc_msg(MANDOCERR_DIVZERO,
1.350 schwarze 2934: ln, *pos, "%s", v);
1.244 schwarze 2935: *res = 0;
2936: break;
2937: }
1.204 schwarze 2938: *res %= operand2;
2939: break;
1.207 schwarze 2940: case '<':
1.204 schwarze 2941: *res = *res < operand2;
2942: break;
1.207 schwarze 2943: case '>':
1.204 schwarze 2944: *res = *res > operand2;
2945: break;
1.207 schwarze 2946: case 'l':
1.204 schwarze 2947: *res = *res <= operand2;
2948: break;
1.207 schwarze 2949: case 'g':
1.204 schwarze 2950: *res = *res >= operand2;
2951: break;
1.207 schwarze 2952: case '=':
1.204 schwarze 2953: *res = *res == operand2;
2954: break;
1.207 schwarze 2955: case '!':
1.204 schwarze 2956: *res = *res != operand2;
2957: break;
1.207 schwarze 2958: case '&':
1.204 schwarze 2959: *res = *res && operand2;
2960: break;
1.207 schwarze 2961: case ':':
1.204 schwarze 2962: *res = *res || operand2;
2963: break;
1.207 schwarze 2964: case 'i':
1.204 schwarze 2965: if (operand2 < *res)
2966: *res = operand2;
2967: break;
1.207 schwarze 2968: case 'a':
1.204 schwarze 2969: if (operand2 > *res)
2970: *res = operand2;
2971: break;
2972: default:
2973: abort();
2974: }
2975: }
1.277 schwarze 2976: return 1;
1.204 schwarze 2977: }
2978:
1.266 schwarze 2979: /* --- register management ------------------------------------------------ */
2980:
1.180 schwarze 2981: void
1.187 schwarze 2982: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.147 kristaps 2983: {
1.327 schwarze 2984: roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
1.326 schwarze 2985: }
2986:
2987: static void
2988: roff_setregn(struct roff *r, const char *name, size_t len,
1.327 schwarze 2989: int val, char sign, int step)
1.326 schwarze 2990: {
1.180 schwarze 2991: struct roffreg *reg;
2992:
2993: /* Search for an existing register with the same name. */
2994: reg = r->regtab;
2995:
1.326 schwarze 2996: while (reg != NULL && (reg->key.sz != len ||
2997: strncmp(reg->key.p, name, len) != 0))
1.180 schwarze 2998: reg = reg->next;
1.147 kristaps 2999:
1.180 schwarze 3000: if (NULL == reg) {
3001: /* Create a new register. */
3002: reg = mandoc_malloc(sizeof(struct roffreg));
1.326 schwarze 3003: reg->key.p = mandoc_strndup(name, len);
3004: reg->key.sz = len;
1.187 schwarze 3005: reg->val = 0;
1.327 schwarze 3006: reg->step = 0;
1.180 schwarze 3007: reg->next = r->regtab;
3008: r->regtab = reg;
3009: }
3010:
1.187 schwarze 3011: if ('+' == sign)
3012: reg->val += val;
3013: else if ('-' == sign)
3014: reg->val -= val;
3015: else
3016: reg->val = val;
1.327 schwarze 3017: if (step != INT_MIN)
3018: reg->step = step;
1.147 kristaps 3019: }
3020:
1.192 schwarze 3021: /*
3022: * Handle some predefined read-only number registers.
3023: * For now, return -1 if the requested register is not predefined;
3024: * in case a predefined read-only register having the value -1
3025: * were to turn up, another special value would have to be chosen.
3026: */
3027: static int
1.273 schwarze 3028: roff_getregro(const struct roff *r, const char *name)
1.192 schwarze 3029: {
3030:
3031: switch (*name) {
1.273 schwarze 3032: case '$': /* Number of arguments of the last macro evaluated. */
1.339 schwarze 3033: return r->mstackpos < 0 ? 0 : r->mstack[r->mstackpos].argc;
1.207 schwarze 3034: case 'A': /* ASCII approximation mode is always off. */
1.277 schwarze 3035: return 0;
1.207 schwarze 3036: case 'g': /* Groff compatibility mode is always on. */
1.277 schwarze 3037: return 1;
1.207 schwarze 3038: case 'H': /* Fixed horizontal resolution. */
1.277 schwarze 3039: return 24;
1.207 schwarze 3040: case 'j': /* Always adjust left margin only. */
1.277 schwarze 3041: return 0;
1.207 schwarze 3042: case 'T': /* Some output device is always defined. */
1.277 schwarze 3043: return 1;
1.207 schwarze 3044: case 'V': /* Fixed vertical resolution. */
1.277 schwarze 3045: return 40;
1.192 schwarze 3046: default:
1.277 schwarze 3047: return -1;
1.192 schwarze 3048: }
3049: }
3050:
1.181 schwarze 3051: int
1.326 schwarze 3052: roff_getreg(struct roff *r, const char *name)
1.147 kristaps 3053: {
1.327 schwarze 3054: return roff_getregn(r, name, strlen(name), '\0');
1.181 schwarze 3055: }
3056:
3057: static int
1.327 schwarze 3058: roff_getregn(struct roff *r, const char *name, size_t len, char sign)
1.181 schwarze 3059: {
3060: struct roffreg *reg;
1.192 schwarze 3061: int val;
3062:
3063: if ('.' == name[0] && 2 == len) {
1.273 schwarze 3064: val = roff_getregro(r, name + 1);
1.192 schwarze 3065: if (-1 != val)
1.277 schwarze 3066: return val;
1.192 schwarze 3067: }
1.181 schwarze 3068:
1.327 schwarze 3069: for (reg = r->regtab; reg; reg = reg->next) {
1.181 schwarze 3070: if (len == reg->key.sz &&
1.327 schwarze 3071: 0 == strncmp(name, reg->key.p, len)) {
3072: switch (sign) {
3073: case '+':
3074: reg->val += reg->step;
3075: break;
3076: case '-':
3077: reg->val -= reg->step;
3078: break;
3079: default:
3080: break;
3081: }
1.277 schwarze 3082: return reg->val;
1.327 schwarze 3083: }
3084: }
1.271 schwarze 3085:
1.327 schwarze 3086: roff_setregn(r, name, len, 0, '\0', INT_MIN);
1.277 schwarze 3087: return 0;
1.271 schwarze 3088: }
3089:
3090: static int
3091: roff_hasregn(const struct roff *r, const char *name, size_t len)
3092: {
3093: struct roffreg *reg;
3094: int val;
3095:
3096: if ('.' == name[0] && 2 == len) {
1.273 schwarze 3097: val = roff_getregro(r, name + 1);
1.271 schwarze 3098: if (-1 != val)
1.277 schwarze 3099: return 1;
1.271 schwarze 3100: }
3101:
3102: for (reg = r->regtab; reg; reg = reg->next)
3103: if (len == reg->key.sz &&
3104: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 3105: return 1;
1.147 kristaps 3106:
1.277 schwarze 3107: return 0;
1.147 kristaps 3108: }
3109:
1.180 schwarze 3110: static void
3111: roff_freereg(struct roffreg *reg)
1.147 kristaps 3112: {
1.180 schwarze 3113: struct roffreg *old_reg;
1.147 kristaps 3114:
1.180 schwarze 3115: while (NULL != reg) {
3116: free(reg->key.p);
3117: old_reg = reg;
3118: reg = reg->next;
3119: free(old_reg);
3120: }
1.147 kristaps 3121: }
1.92 schwarze 3122:
1.340 schwarze 3123: static int
1.89 kristaps 3124: roff_nr(ROFF_ARGS)
1.83 schwarze 3125: {
1.327 schwarze 3126: char *key, *val, *step;
1.212 schwarze 3127: size_t keysz;
1.327 schwarze 3128: int iv, is, len;
1.187 schwarze 3129: char sign;
1.89 kristaps 3130:
1.238 schwarze 3131: key = val = buf->buf + pos;
3132: if (*key == '\0')
1.277 schwarze 3133: return ROFF_IGN;
1.212 schwarze 3134:
3135: keysz = roff_getname(r, &val, ln, pos);
1.363 schwarze 3136: if (key[keysz] == '\\' || key[keysz] == '\t')
1.277 schwarze 3137: return ROFF_IGN;
1.89 kristaps 3138:
1.187 schwarze 3139: sign = *val;
1.238 schwarze 3140: if (sign == '+' || sign == '-')
1.187 schwarze 3141: val++;
3142:
1.327 schwarze 3143: len = 0;
3144: if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
3145: return ROFF_IGN;
3146:
3147: step = val + len;
3148: while (isspace((unsigned char)*step))
3149: step++;
3150: if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)
3151: is = INT_MIN;
1.109 kristaps 3152:
1.327 schwarze 3153: roff_setregn(r, key, keysz, iv, sign, is);
1.277 schwarze 3154: return ROFF_IGN;
1.203 schwarze 3155: }
3156:
1.340 schwarze 3157: static int
1.203 schwarze 3158: roff_rr(ROFF_ARGS)
3159: {
3160: struct roffreg *reg, **prev;
1.212 schwarze 3161: char *name, *cp;
3162: size_t namesz;
1.203 schwarze 3163:
1.238 schwarze 3164: name = cp = buf->buf + pos;
3165: if (*name == '\0')
1.277 schwarze 3166: return ROFF_IGN;
1.212 schwarze 3167: namesz = roff_getname(r, &cp, ln, pos);
3168: name[namesz] = '\0';
1.203 schwarze 3169:
3170: prev = &r->regtab;
3171: while (1) {
3172: reg = *prev;
1.238 schwarze 3173: if (reg == NULL || !strcmp(name, reg->key.p))
1.203 schwarze 3174: break;
3175: prev = ®->next;
3176: }
1.238 schwarze 3177: if (reg != NULL) {
1.203 schwarze 3178: *prev = reg->next;
3179: free(reg->key.p);
3180: free(reg);
3181: }
1.277 schwarze 3182: return ROFF_IGN;
1.122 schwarze 3183: }
3184:
1.266 schwarze 3185: /* --- handler functions for roff requests -------------------------------- */
3186:
1.340 schwarze 3187: static int
1.122 schwarze 3188: roff_rm(ROFF_ARGS)
3189: {
3190: const char *name;
3191: char *cp;
1.212 schwarze 3192: size_t namesz;
1.122 schwarze 3193:
1.238 schwarze 3194: cp = buf->buf + pos;
3195: while (*cp != '\0') {
1.212 schwarze 3196: name = cp;
1.238 schwarze 3197: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.212 schwarze 3198: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.311 schwarze 3199: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.363 schwarze 3200: if (name[namesz] == '\\' || name[namesz] == '\t')
1.212 schwarze 3201: break;
1.122 schwarze 3202: }
1.277 schwarze 3203: return ROFF_IGN;
1.178 schwarze 3204: }
3205:
1.340 schwarze 3206: static int
1.178 schwarze 3207: roff_it(ROFF_ARGS)
3208: {
3209: int iv;
3210:
3211: /* Parse the number of lines. */
1.261 schwarze 3212:
3213: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.350 schwarze 3214: mandoc_msg(MANDOCERR_IT_NONUM,
3215: ln, ppos, "%s", buf->buf + 1);
1.277 schwarze 3216: return ROFF_IGN;
1.178 schwarze 3217: }
3218:
1.262 schwarze 3219: while (isspace((unsigned char)buf->buf[pos]))
3220: pos++;
3221:
3222: /*
3223: * Arm the input line trap.
3224: * Special-casing "an-trap" is an ugly workaround to cope
3225: * with DocBook stupidly fiddling with man(7) internals.
3226: */
1.261 schwarze 3227:
1.178 schwarze 3228: roffit_lines = iv;
1.262 schwarze 3229: roffit_macro = mandoc_strdup(iv != 1 ||
3230: strcmp(buf->buf + pos, "an-trap") ?
3231: buf->buf + pos : "br");
1.277 schwarze 3232: return ROFF_IGN;
1.175 schwarze 3233: }
3234:
1.340 schwarze 3235: static int
1.175 schwarze 3236: roff_Dd(ROFF_ARGS)
3237: {
1.315 schwarze 3238: int mask;
3239: enum roff_tok t, te;
1.227 schwarze 3240:
1.315 schwarze 3241: switch (tok) {
3242: case ROFF_Dd:
3243: tok = MDOC_Dd;
3244: te = MDOC_MAX;
3245: if (r->format == 0)
3246: r->format = MPARSE_MDOC;
3247: mask = MPARSE_MDOC | MPARSE_QUICK;
3248: break;
3249: case ROFF_TH:
3250: tok = MAN_TH;
3251: te = MAN_MAX;
3252: if (r->format == 0)
3253: r->format = MPARSE_MAN;
3254: mask = MPARSE_QUICK;
3255: break;
3256: default:
3257: abort();
3258: }
3259: if ((r->options & mask) == 0)
3260: for (t = tok; t < te; t++)
3261: roff_setstr(r, roff_name[t], NULL, 0);
1.277 schwarze 3262: return ROFF_CONT;
1.109 kristaps 3263: }
3264:
1.340 schwarze 3265: static int
1.109 kristaps 3266: roff_TE(ROFF_ARGS)
3267: {
1.361 schwarze 3268: r->man->flags &= ~ROFF_NONOFILL;
1.321 schwarze 3269: if (r->tbl == NULL) {
1.350 schwarze 3270: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "TE");
1.321 schwarze 3271: return ROFF_IGN;
3272: }
1.346 schwarze 3273: if (tbl_end(r->tbl, 0) == 0) {
1.321 schwarze 3274: r->tbl = NULL;
1.258 schwarze 3275: free(buf->buf);
3276: buf->buf = mandoc_strdup(".sp");
3277: buf->sz = 4;
1.329 schwarze 3278: *offs = 0;
1.277 schwarze 3279: return ROFF_REPARSE;
1.258 schwarze 3280: }
1.321 schwarze 3281: r->tbl = NULL;
1.277 schwarze 3282: return ROFF_IGN;
1.112 kristaps 3283: }
3284:
1.340 schwarze 3285: static int
1.112 kristaps 3286: roff_T_(ROFF_ARGS)
3287: {
3288:
3289: if (NULL == r->tbl)
1.350 schwarze 3290: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "T&");
1.112 kristaps 3291: else
1.296 schwarze 3292: tbl_restart(ln, ppos, r->tbl);
1.112 kristaps 3293:
1.277 schwarze 3294: return ROFF_IGN;
1.109 kristaps 3295: }
3296:
1.230 schwarze 3297: /*
3298: * Handle in-line equation delimiters.
3299: */
1.340 schwarze 3300: static int
1.238 schwarze 3301: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.151 kristaps 3302: {
1.233 schwarze 3303: char *cp1, *cp2;
3304: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.151 kristaps 3305:
1.230 schwarze 3306: /*
3307: * Outside equations, look for an opening delimiter.
3308: * If we are inside an equation, we already know it is
3309: * in-line, or this function wouldn't have been called;
3310: * so look for a closing delimiter.
3311: */
3312:
1.238 schwarze 3313: cp1 = buf->buf + pos;
1.230 schwarze 3314: cp2 = strchr(cp1, r->eqn == NULL ?
3315: r->last_eqn->odelim : r->last_eqn->cdelim);
3316: if (cp2 == NULL)
1.277 schwarze 3317: return ROFF_CONT;
1.230 schwarze 3318:
1.233 schwarze 3319: *cp2++ = '\0';
3320: bef_pr = bef_nl = aft_nl = aft_pr = "";
3321:
3322: /* Handle preceding text, protecting whitespace. */
3323:
1.238 schwarze 3324: if (*buf->buf != '\0') {
1.233 schwarze 3325: if (r->eqn == NULL)
3326: bef_pr = "\\&";
3327: bef_nl = "\n";
3328: }
3329:
3330: /*
3331: * Prepare replacing the delimiter with an equation macro
3332: * and drop leading white space from the equation.
3333: */
1.230 schwarze 3334:
1.233 schwarze 3335: if (r->eqn == NULL) {
3336: while (*cp2 == ' ')
3337: cp2++;
3338: mac = ".EQ";
3339: } else
3340: mac = ".EN";
3341:
3342: /* Handle following text, protecting whitespace. */
3343:
3344: if (*cp2 != '\0') {
3345: aft_nl = "\n";
3346: if (r->eqn != NULL)
3347: aft_pr = "\\&";
3348: }
3349:
3350: /* Do the actual replacement. */
3351:
1.238 schwarze 3352: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.233 schwarze 3353: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.238 schwarze 3354: free(buf->buf);
3355: buf->buf = cp1;
1.230 schwarze 3356:
3357: /* Toggle the in-line state of the eqn subsystem. */
3358:
3359: r->eqn_inline = r->eqn == NULL;
1.277 schwarze 3360: return ROFF_REPARSE;
1.151 kristaps 3361: }
3362:
1.340 schwarze 3363: static int
1.235 schwarze 3364: roff_EQ(ROFF_ARGS)
1.125 kristaps 3365: {
1.319 schwarze 3366: struct roff_node *n;
3367:
1.356 schwarze 3368: if (r->man->meta.macroset == MACROSET_MAN)
1.322 schwarze 3369: man_breakscope(r->man, ROFF_EQ);
1.319 schwarze 3370: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
3371: if (ln > r->man->last->line)
3372: n->flags |= NODE_LINE;
1.348 schwarze 3373: n->eqn = eqn_box_new();
1.319 schwarze 3374: roff_node_append(r->man, n);
3375: r->man->next = ROFF_NEXT_SIBLING;
1.125 kristaps 3376:
1.238 schwarze 3377: assert(r->eqn == NULL);
1.319 schwarze 3378: if (r->last_eqn == NULL)
1.351 schwarze 3379: r->last_eqn = eqn_alloc();
1.319 schwarze 3380: else
3381: eqn_reset(r->last_eqn);
3382: r->eqn = r->last_eqn;
3383: r->eqn->node = n;
1.151 kristaps 3384:
1.238 schwarze 3385: if (buf->buf[pos] != '\0')
1.350 schwarze 3386: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.238 schwarze 3387: ".EQ %s", buf->buf + pos);
1.151 kristaps 3388:
1.277 schwarze 3389: return ROFF_IGN;
1.125 kristaps 3390: }
3391:
1.340 schwarze 3392: static int
1.125 kristaps 3393: roff_EN(ROFF_ARGS)
3394: {
1.319 schwarze 3395: if (r->eqn != NULL) {
3396: eqn_parse(r->eqn);
3397: r->eqn = NULL;
3398: } else
1.350 schwarze 3399: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "EN");
1.319 schwarze 3400: if (buf->buf[pos] != '\0')
1.350 schwarze 3401: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.319 schwarze 3402: "EN %s", buf->buf + pos);
1.277 schwarze 3403: return ROFF_IGN;
1.125 kristaps 3404: }
3405:
1.340 schwarze 3406: static int
1.109 kristaps 3407: roff_TS(ROFF_ARGS)
3408: {
1.321 schwarze 3409: if (r->tbl != NULL) {
1.350 schwarze 3410: mandoc_msg(MANDOCERR_BLK_BROKEN, ln, ppos, "TS breaks TS");
1.346 schwarze 3411: tbl_end(r->tbl, 0);
1.115 kristaps 3412: }
1.361 schwarze 3413: r->man->flags |= ROFF_NONOFILL;
1.351 schwarze 3414: r->tbl = tbl_alloc(ppos, ln, r->last_tbl);
1.346 schwarze 3415: if (r->last_tbl == NULL)
1.321 schwarze 3416: r->first_tbl = r->tbl;
3417: r->last_tbl = r->tbl;
1.297 schwarze 3418: return ROFF_IGN;
3419: }
3420:
1.340 schwarze 3421: static int
1.358 schwarze 3422: roff_noarg(ROFF_ARGS)
3423: {
3424: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3425: man_breakscope(r->man, tok);
3426: if (tok == ROFF_brp)
3427: tok = ROFF_br;
3428: roff_elem_alloc(r->man, ln, ppos, tok);
3429: if (buf->buf[pos] != '\0')
3430: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
3431: "%s %s", roff_name[tok], buf->buf + pos);
3432: if (tok == ROFF_nf)
3433: r->man->flags |= ROFF_NOFILL;
3434: else if (tok == ROFF_fi)
3435: r->man->flags &= ~ROFF_NOFILL;
3436: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3437: r->man->next = ROFF_NEXT_SIBLING;
3438: return ROFF_IGN;
3439: }
3440:
3441: static int
1.297 schwarze 3442: roff_onearg(ROFF_ARGS)
3443: {
3444: struct roff_node *n;
3445: char *cp;
1.305 schwarze 3446: int npos;
1.297 schwarze 3447:
1.302 schwarze 3448: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.320 schwarze 3449: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
3450: tok == ROFF_ti))
1.302 schwarze 3451: man_breakscope(r->man, tok);
3452:
1.309 schwarze 3453: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.305 schwarze 3454: r->man->last = roffce_node;
3455: r->man->next = ROFF_NEXT_SIBLING;
3456: }
3457:
1.297 schwarze 3458: roff_elem_alloc(r->man, ln, ppos, tok);
3459: n = r->man->last;
3460:
3461: cp = buf->buf + pos;
3462: if (*cp != '\0') {
3463: while (*cp != '\0' && *cp != ' ')
3464: cp++;
3465: while (*cp == ' ')
3466: *cp++ = '\0';
3467: if (*cp != '\0')
1.350 schwarze 3468: mandoc_msg(MANDOCERR_ARG_EXCESS,
3469: ln, (int)(cp - buf->buf),
1.297 schwarze 3470: "%s ... %s", roff_name[tok], cp);
3471: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.300 schwarze 3472: }
3473:
1.309 schwarze 3474: if (tok == ROFF_ce || tok == ROFF_rj) {
3475: if (r->man->last->type == ROFFT_ELEM) {
1.305 schwarze 3476: roff_word_alloc(r->man, ln, pos, "1");
3477: r->man->last->flags |= NODE_NOSRC;
3478: }
3479: npos = 0;
3480: if (roff_evalnum(r, ln, r->man->last->string, &npos,
3481: &roffce_lines, 0) == 0) {
1.350 schwarze 3482: mandoc_msg(MANDOCERR_CE_NONUM,
3483: ln, pos, "ce %s", buf->buf + pos);
1.305 schwarze 3484: roffce_lines = 1;
3485: }
3486: if (roffce_lines < 1) {
3487: r->man->last = r->man->last->parent;
3488: roffce_node = NULL;
3489: roffce_lines = 0;
3490: } else
3491: roffce_node = r->man->last->parent;
3492: } else {
3493: n->flags |= NODE_VALID | NODE_ENDED;
3494: r->man->last = n;
3495: }
3496: n->flags |= NODE_LINE;
1.300 schwarze 3497: r->man->next = ROFF_NEXT_SIBLING;
3498: return ROFF_IGN;
3499: }
3500:
1.340 schwarze 3501: static int
1.300 schwarze 3502: roff_manyarg(ROFF_ARGS)
3503: {
3504: struct roff_node *n;
3505: char *sp, *ep;
3506:
3507: roff_elem_alloc(r->man, ln, ppos, tok);
3508: n = r->man->last;
3509:
3510: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3511: while (*ep != '\0' && *ep != ' ')
3512: ep++;
3513: while (*ep == ' ')
3514: *ep++ = '\0';
3515: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.297 schwarze 3516: }
3517:
3518: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3519: r->man->last = n;
3520: r->man->next = ROFF_NEXT_SIBLING;
1.277 schwarze 3521: return ROFF_IGN;
1.251 schwarze 3522: }
3523:
1.340 schwarze 3524: static int
1.311 schwarze 3525: roff_als(ROFF_ARGS)
3526: {
3527: char *oldn, *newn, *end, *value;
3528: size_t oldsz, newsz, valsz;
3529:
3530: newn = oldn = buf->buf + pos;
3531: if (*newn == '\0')
3532: return ROFF_IGN;
3533:
3534: newsz = roff_getname(r, &oldn, ln, pos);
1.363 schwarze 3535: if (newn[newsz] == '\\' || newn[newsz] == '\t' || *oldn == '\0')
1.311 schwarze 3536: return ROFF_IGN;
3537:
3538: end = oldn;
3539: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3540: if (oldsz == 0)
3541: return ROFF_IGN;
3542:
1.338 schwarze 3543: valsz = mandoc_asprintf(&value, ".%.*s \\$@\\\"\n",
1.315 schwarze 3544: (int)oldsz, oldn);
1.311 schwarze 3545: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3546: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3547: free(value);
1.364 schwarze 3548: return ROFF_IGN;
3549: }
3550:
3551: /*
3552: * The .break request only makes sense inside conditionals,
3553: * and that case is already handled in roff_cond_sub().
3554: */
3555: static int
3556: roff_break(ROFF_ARGS)
3557: {
3558: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, pos, "break");
1.296 schwarze 3559: return ROFF_IGN;
1.92 schwarze 3560: }
3561:
1.340 schwarze 3562: static int
1.174 kristaps 3563: roff_cc(ROFF_ARGS)
3564: {
3565: const char *p;
3566:
1.238 schwarze 3567: p = buf->buf + pos;
1.174 kristaps 3568:
1.238 schwarze 3569: if (*p == '\0' || (r->control = *p++) == '.')
1.303 schwarze 3570: r->control = '\0';
1.174 kristaps 3571:
1.238 schwarze 3572: if (*p != '\0')
1.350 schwarze 3573: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.260 schwarze 3574: ln, p - buf->buf, "cc ... %s", p);
1.174 kristaps 3575:
1.341 schwarze 3576: return ROFF_IGN;
3577: }
3578:
3579: static int
3580: roff_char(ROFF_ARGS)
3581: {
3582: const char *p, *kp, *vp;
3583: size_t ksz, vsz;
3584: int font;
3585:
3586: /* Parse the character to be replaced. */
3587:
3588: kp = buf->buf + pos;
3589: p = kp + 1;
3590: if (*kp == '\0' || (*kp == '\\' &&
3591: mandoc_escape(&p, NULL, NULL) != ESCAPE_SPECIAL) ||
3592: (*p != ' ' && *p != '\0')) {
1.350 schwarze 3593: mandoc_msg(MANDOCERR_CHAR_ARG, ln, pos, "char %s", kp);
1.341 schwarze 3594: return ROFF_IGN;
3595: }
3596: ksz = p - kp;
3597: while (*p == ' ')
3598: p++;
3599:
3600: /*
3601: * If the replacement string contains a font escape sequence,
3602: * we have to restore the font at the end.
3603: */
3604:
3605: vp = p;
3606: vsz = strlen(p);
3607: font = 0;
3608: while (*p != '\0') {
3609: if (*p++ != '\\')
3610: continue;
3611: switch (mandoc_escape(&p, NULL, NULL)) {
3612: case ESCAPE_FONT:
3613: case ESCAPE_FONTROMAN:
3614: case ESCAPE_FONTITALIC:
3615: case ESCAPE_FONTBOLD:
3616: case ESCAPE_FONTBI:
1.378 schwarze 3617: case ESCAPE_FONTCR:
3618: case ESCAPE_FONTCB:
3619: case ESCAPE_FONTCI:
1.341 schwarze 3620: case ESCAPE_FONTPREV:
3621: font++;
3622: break;
3623: default:
3624: break;
3625: }
3626: }
3627: if (font > 1)
1.350 schwarze 3628: mandoc_msg(MANDOCERR_CHAR_FONT,
3629: ln, (int)(vp - buf->buf), "%s", vp);
1.341 schwarze 3630:
3631: /*
3632: * Approximate the effect of .char using the .tr tables.
3633: * XXX In groff, .char and .tr interact differently.
3634: */
3635:
3636: if (ksz == 1) {
3637: if (r->xtab == NULL)
3638: r->xtab = mandoc_calloc(128, sizeof(*r->xtab));
3639: assert((unsigned int)*kp < 128);
3640: free(r->xtab[(int)*kp].p);
3641: r->xtab[(int)*kp].sz = mandoc_asprintf(&r->xtab[(int)*kp].p,
3642: "%s%s", vp, font ? "\fP" : "");
3643: } else {
3644: roff_setstrn(&r->xmbtab, kp, ksz, vp, vsz, 0);
3645: if (font)
3646: roff_setstrn(&r->xmbtab, kp, ksz, "\\fP", 3, 1);
3647: }
1.277 schwarze 3648: return ROFF_IGN;
1.174 kristaps 3649: }
3650:
1.340 schwarze 3651: static int
1.303 schwarze 3652: roff_ec(ROFF_ARGS)
3653: {
3654: const char *p;
3655:
3656: p = buf->buf + pos;
3657: if (*p == '\0')
3658: r->escape = '\\';
3659: else {
3660: r->escape = *p;
3661: if (*++p != '\0')
1.350 schwarze 3662: mandoc_msg(MANDOCERR_ARG_EXCESS, ln,
3663: (int)(p - buf->buf), "ec ... %s", p);
1.303 schwarze 3664: }
3665: return ROFF_IGN;
3666: }
3667:
1.340 schwarze 3668: static int
1.303 schwarze 3669: roff_eo(ROFF_ARGS)
3670: {
3671: r->escape = '\0';
3672: if (buf->buf[pos] != '\0')
1.350 schwarze 3673: mandoc_msg(MANDOCERR_ARG_SKIP,
1.303 schwarze 3674: ln, pos, "eo %s", buf->buf + pos);
1.384 schwarze 3675: return ROFF_IGN;
3676: }
3677:
3678: static int
3679: roff_mc(ROFF_ARGS)
3680: {
3681: struct roff_node *n;
3682: char *cp;
3683:
3684: /* Parse the first argument. */
3685:
3686: cp = buf->buf + pos;
3687: if (*cp != '\0')
3688: cp++;
3689: if (buf->buf[pos] == '\\') {
3690: switch (mandoc_escape((const char **)&cp, NULL, NULL)) {
3691: case ESCAPE_SPECIAL:
3692: case ESCAPE_UNICODE:
3693: case ESCAPE_NUMBERED:
3694: break;
3695: default:
3696: *cp = '\0';
3697: mandoc_msg(MANDOCERR_MC_ESC, ln, pos,
3698: "mc %s", buf->buf + pos);
3699: buf->buf[pos] = '\0';
3700: break;
3701: }
3702: }
3703:
3704: /* Ignore additional arguments. */
3705:
3706: while (*cp == ' ')
3707: *cp++ = '\0';
3708: if (*cp != '\0') {
3709: mandoc_msg(MANDOCERR_MC_DIST, ln, (int)(cp - buf->buf),
3710: "mc ... %s", cp);
3711: *cp = '\0';
3712: }
3713:
3714: /* Create the .mc node. */
3715:
3716: roff_elem_alloc(r->man, ln, ppos, tok);
3717: n = r->man->last;
3718: if (buf->buf[pos] != '\0')
3719: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
3720: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3721: r->man->last = n;
3722: r->man->next = ROFF_NEXT_SIBLING;
1.303 schwarze 3723: return ROFF_IGN;
1.330 schwarze 3724: }
3725:
1.340 schwarze 3726: static int
1.330 schwarze 3727: roff_nop(ROFF_ARGS)
3728: {
3729: while (buf->buf[pos] == ' ')
3730: pos++;
3731: *offs = pos;
3732: return ROFF_RERUN;
1.303 schwarze 3733: }
3734:
1.340 schwarze 3735: static int
1.164 kristaps 3736: roff_tr(ROFF_ARGS)
3737: {
3738: const char *p, *first, *second;
3739: size_t fsz, ssz;
3740:
1.238 schwarze 3741: p = buf->buf + pos;
1.164 kristaps 3742:
1.238 schwarze 3743: if (*p == '\0') {
1.350 schwarze 3744: mandoc_msg(MANDOCERR_REQ_EMPTY, ln, ppos, "tr");
1.277 schwarze 3745: return ROFF_IGN;
1.164 kristaps 3746: }
3747:
1.238 schwarze 3748: while (*p != '\0') {
1.164 kristaps 3749: fsz = ssz = 1;
3750:
3751: first = p++;
1.238 schwarze 3752: if (*first == '\\') {
1.394 schwarze 3753: if (mandoc_escape(&p, NULL, NULL) == ESCAPE_ERROR)
1.277 schwarze 3754: return ROFF_IGN;
1.164 kristaps 3755: fsz = (size_t)(p - first);
3756: }
3757:
3758: second = p++;
1.238 schwarze 3759: if (*second == '\\') {
1.394 schwarze 3760: if (mandoc_escape(&p, NULL, NULL) == ESCAPE_ERROR)
1.277 schwarze 3761: return ROFF_IGN;
1.164 kristaps 3762: ssz = (size_t)(p - second);
1.238 schwarze 3763: } else if (*second == '\0') {
1.350 schwarze 3764: mandoc_msg(MANDOCERR_TR_ODD, ln,
3765: (int)(first - buf->buf), "tr %s", first);
1.164 kristaps 3766: second = " ";
1.165 kristaps 3767: p--;
1.164 kristaps 3768: }
3769:
1.167 kristaps 3770: if (fsz > 1) {
1.207 schwarze 3771: roff_setstrn(&r->xmbtab, first, fsz,
3772: second, ssz, 0);
1.167 kristaps 3773: continue;
3774: }
3775:
1.238 schwarze 3776: if (r->xtab == NULL)
1.207 schwarze 3777: r->xtab = mandoc_calloc(128,
3778: sizeof(struct roffstr));
1.167 kristaps 3779:
3780: free(r->xtab[(int)*first].p);
3781: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3782: r->xtab[(int)*first].sz = ssz;
1.164 kristaps 3783: }
3784:
1.277 schwarze 3785: return ROFF_IGN;
1.164 kristaps 3786: }
3787:
1.339 schwarze 3788: /*
3789: * Implementation of the .return request.
3790: * There is no need to call roff_userret() from here.
3791: * The read module will call that after rewinding the reader stack
3792: * to the place from where the current macro was called.
3793: */
1.340 schwarze 3794: static int
1.339 schwarze 3795: roff_return(ROFF_ARGS)
3796: {
3797: if (r->mstackpos >= 0)
1.340 schwarze 3798: return ROFF_IGN | ROFF_USERRET;
1.339 schwarze 3799:
1.350 schwarze 3800: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "return");
1.339 schwarze 3801: return ROFF_IGN;
3802: }
3803:
1.340 schwarze 3804: static int
1.306 schwarze 3805: roff_rn(ROFF_ARGS)
3806: {
3807: const char *value;
3808: char *oldn, *newn, *end;
3809: size_t oldsz, newsz;
1.315 schwarze 3810: int deftype;
1.306 schwarze 3811:
3812: oldn = newn = buf->buf + pos;
3813: if (*oldn == '\0')
3814: return ROFF_IGN;
3815:
3816: oldsz = roff_getname(r, &newn, ln, pos);
1.363 schwarze 3817: if (oldn[oldsz] == '\\' || oldn[oldsz] == '\t' || *newn == '\0')
1.306 schwarze 3818: return ROFF_IGN;
3819:
3820: end = newn;
3821: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3822: if (newsz == 0)
3823: return ROFF_IGN;
3824:
1.315 schwarze 3825: deftype = ROFFDEF_ANY;
3826: value = roff_getstrn(r, oldn, oldsz, &deftype);
3827: switch (deftype) {
3828: case ROFFDEF_USER:
1.306 schwarze 3829: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3830: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3831: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.315 schwarze 3832: break;
3833: case ROFFDEF_PRE:
3834: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3835: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3836: break;
3837: case ROFFDEF_REN:
1.306 schwarze 3838: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3839: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.315 schwarze 3840: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3841: break;
3842: case ROFFDEF_STD:
1.306 schwarze 3843: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.315 schwarze 3844: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3845: break;
3846: default:
3847: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3848: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3849: break;
3850: }
1.306 schwarze 3851: return ROFF_IGN;
3852: }
3853:
1.340 schwarze 3854: static int
1.339 schwarze 3855: roff_shift(ROFF_ARGS)
3856: {
3857: struct mctx *ctx;
1.382 schwarze 3858: int argpos, levels, i;
1.339 schwarze 3859:
1.382 schwarze 3860: argpos = pos;
1.339 schwarze 3861: levels = 1;
3862: if (buf->buf[pos] != '\0' &&
3863: roff_evalnum(r, ln, buf->buf, &pos, &levels, 0) == 0) {
1.350 schwarze 3864: mandoc_msg(MANDOCERR_CE_NONUM,
1.339 schwarze 3865: ln, pos, "shift %s", buf->buf + pos);
3866: levels = 1;
3867: }
3868: if (r->mstackpos < 0) {
1.350 schwarze 3869: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "shift");
1.339 schwarze 3870: return ROFF_IGN;
3871: }
3872: ctx = r->mstack + r->mstackpos;
3873: if (levels > ctx->argc) {
1.350 schwarze 3874: mandoc_msg(MANDOCERR_SHIFT,
1.382 schwarze 3875: ln, argpos, "%d, but max is %d", levels, ctx->argc);
1.339 schwarze 3876: levels = ctx->argc;
1.382 schwarze 3877: }
3878: if (levels < 0) {
3879: mandoc_msg(MANDOCERR_ARG_NEG, ln, argpos, "shift %d", levels);
3880: levels = 0;
1.339 schwarze 3881: }
3882: if (levels == 0)
3883: return ROFF_IGN;
3884: for (i = 0; i < levels; i++)
3885: free(ctx->argv[i]);
3886: ctx->argc -= levels;
3887: for (i = 0; i < ctx->argc; i++)
3888: ctx->argv[i] = ctx->argv[i + levels];
3889: return ROFF_IGN;
3890: }
3891:
1.340 schwarze 3892: static int
1.105 kristaps 3893: roff_so(ROFF_ARGS)
3894: {
1.249 schwarze 3895: char *name, *cp;
1.105 kristaps 3896:
1.238 schwarze 3897: name = buf->buf + pos;
1.350 schwarze 3898: mandoc_msg(MANDOCERR_SO, ln, ppos, "so %s", name);
1.105 kristaps 3899:
3900: /*
3901: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3902: * opening anything that's not in our cwd or anything beneath
3903: * it. Thus, explicitly disallow traversing up the file-system
3904: * or using absolute paths.
3905: */
3906:
1.238 schwarze 3907: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.350 schwarze 3908: mandoc_msg(MANDOCERR_SO_PATH, ln, ppos, ".so %s", name);
1.249 schwarze 3909: buf->sz = mandoc_asprintf(&cp,
3910: ".sp\nSee the file %s.\n.sp", name) + 1;
3911: free(buf->buf);
3912: buf->buf = cp;
3913: *offs = 0;
1.277 schwarze 3914: return ROFF_REPARSE;
1.105 kristaps 3915: }
3916:
3917: *offs = pos;
1.277 schwarze 3918: return ROFF_SO;
1.105 kristaps 3919: }
1.92 schwarze 3920:
1.266 schwarze 3921: /* --- user defined strings and macros ------------------------------------ */
3922:
1.340 schwarze 3923: static int
1.106 kristaps 3924: roff_userdef(ROFF_ARGS)
1.99 kristaps 3925: {
1.339 schwarze 3926: struct mctx *ctx;
3927: char *arg, *ap, *dst, *src;
3928: size_t sz;
3929:
1.365 schwarze 3930: /* If the macro is empty, ignore it altogether. */
3931:
3932: if (*r->current_string == '\0')
3933: return ROFF_IGN;
3934:
1.339 schwarze 3935: /* Initialize a new macro stack context. */
3936:
3937: if (++r->mstackpos == r->mstacksz) {
3938: r->mstack = mandoc_recallocarray(r->mstack,
3939: r->mstacksz, r->mstacksz + 8, sizeof(*r->mstack));
3940: r->mstacksz += 8;
3941: }
3942: ctx = r->mstack + r->mstackpos;
3943: ctx->argc = 0;
3944:
3945: /*
3946: * Collect pointers to macro argument strings,
3947: * NUL-terminating them and escaping quotes.
3948: */
3949:
3950: src = buf->buf + pos;
3951: while (*src != '\0') {
3952: if (ctx->argc == ctx->argsz) {
3953: ctx->argsz += 8;
3954: ctx->argv = mandoc_reallocarray(ctx->argv,
3955: ctx->argsz, sizeof(*ctx->argv));
3956: }
1.355 schwarze 3957: arg = roff_getarg(r, &src, ln, &pos);
1.339 schwarze 3958: sz = 1; /* For the terminating NUL. */
3959: for (ap = arg; *ap != '\0'; ap++)
3960: sz += *ap == '"' ? 4 : 1;
3961: ctx->argv[ctx->argc++] = dst = mandoc_malloc(sz);
3962: for (ap = arg; *ap != '\0'; ap++) {
3963: if (*ap == '"') {
3964: memcpy(dst, "\\(dq", 4);
3965: dst += 4;
3966: } else
3967: *dst++ = *ap;
1.106 kristaps 3968: }
1.339 schwarze 3969: *dst = '\0';
1.355 schwarze 3970: free(arg);
1.337 schwarze 3971: }
3972:
1.339 schwarze 3973: /* Replace the macro invocation by the macro definition. */
1.263 schwarze 3974:
1.238 schwarze 3975: free(buf->buf);
1.339 schwarze 3976: buf->buf = mandoc_strdup(r->current_string);
3977: buf->sz = strlen(buf->buf) + 1;
1.248 schwarze 3978: *offs = 0;
1.106 kristaps 3979:
1.365 schwarze 3980: return buf->buf[buf->sz - 2] == '\n' ?
1.340 schwarze 3981: ROFF_REPARSE | ROFF_USERCALL : ROFF_IGN | ROFF_APPEND;
1.99 kristaps 3982: }
1.121 schwarze 3983:
1.306 schwarze 3984: /*
3985: * Calling a high-level macro that was renamed with .rn.
3986: * r->current_string has already been set up by roff_parse().
3987: */
1.340 schwarze 3988: static int
1.306 schwarze 3989: roff_renamed(ROFF_ARGS)
3990: {
3991: char *nbuf;
3992:
1.315 schwarze 3993: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
3994: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.306 schwarze 3995: free(buf->buf);
3996: buf->buf = nbuf;
1.329 schwarze 3997: *offs = 0;
1.306 schwarze 3998: return ROFF_CONT;
3999: }
4000:
1.362 schwarze 4001: /*
4002: * Measure the length in bytes of the roff identifier at *cpp
4003: * and advance the pointer to the next word.
4004: */
1.212 schwarze 4005: static size_t
1.121 schwarze 4006: roff_getname(struct roff *r, char **cpp, int ln, int pos)
4007: {
4008: char *name, *cp;
1.393 schwarze 4009: int namesz, inam, iend;
1.121 schwarze 4010:
4011: name = *cpp;
1.362 schwarze 4012: if (*name == '\0')
1.277 schwarze 4013: return 0;
1.121 schwarze 4014:
1.362 schwarze 4015: /* Advance cp to the byte after the end of the name. */
4016:
1.393 schwarze 4017: cp = name;
4018: namesz = 0;
4019: for (;;) {
1.363 schwarze 4020: if (*cp == '\0')
1.212 schwarze 4021: break;
1.363 schwarze 4022: if (*cp == ' ' || *cp == '\t') {
4023: cp++;
4024: break;
4025: }
1.393 schwarze 4026: if (*cp != '\\') {
4027: if (name + namesz < cp) {
4028: name[namesz] = *cp;
4029: *cp = ' ';
4030: }
4031: namesz++;
4032: cp++;
1.121 schwarze 4033: continue;
1.393 schwarze 4034: }
1.362 schwarze 4035: if (cp[1] == '{' || cp[1] == '}')
1.215 schwarze 4036: break;
1.393 schwarze 4037: if (roff_escape(cp, 0, 0, NULL, &inam,
4038: NULL, NULL, &iend) != ESCAPE_UNDEF) {
4039: mandoc_msg(MANDOCERR_NAMESC, ln, pos,
4040: "%.*s%.*s", namesz, name, iend, cp);
4041: cp += iend;
4042: break;
4043: }
4044:
4045: /*
4046: * In an identifier, \\, \., \G and so on
4047: * are reduced to \, ., G and so on,
4048: * vaguely similar to copy mode.
4049: */
4050:
4051: name[namesz++] = cp[inam];
4052: while (iend--) {
4053: if (cp >= name + namesz)
4054: *cp = ' ';
4055: cp++;
4056: }
1.121 schwarze 4057: }
4058:
4059: /* Read past spaces. */
1.362 schwarze 4060:
4061: while (*cp == ' ')
1.121 schwarze 4062: cp++;
4063:
4064: *cpp = cp;
1.277 schwarze 4065: return namesz;
1.121 schwarze 4066: }
4067:
1.106 kristaps 4068: /*
4069: * Store *string into the user-defined string called *name.
4070: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.193 schwarze 4071: * append == 0: replace mode
4072: * append == 1: single-line append mode
4073: * append == 2: multiline append mode, append '\n' after each call
1.106 kristaps 4074: */
1.94 kristaps 4075: static void
1.106 kristaps 4076: roff_setstr(struct roff *r, const char *name, const char *string,
1.193 schwarze 4077: int append)
1.92 schwarze 4078: {
1.315 schwarze 4079: size_t namesz;
1.164 kristaps 4080:
1.315 schwarze 4081: namesz = strlen(name);
4082: roff_setstrn(&r->strtab, name, namesz, string,
1.207 schwarze 4083: string ? strlen(string) : 0, append);
1.315 schwarze 4084: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.164 kristaps 4085: }
4086:
4087: static void
1.166 kristaps 4088: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.193 schwarze 4089: const char *string, size_t stringsz, int append)
1.164 kristaps 4090: {
1.166 kristaps 4091: struct roffkv *n;
1.164 kristaps 4092: char *c;
4093: int i;
4094: size_t oldch, newch;
1.92 schwarze 4095:
1.106 kristaps 4096: /* Search for an existing string with the same name. */
1.164 kristaps 4097: n = *r;
4098:
1.211 schwarze 4099: while (n && (namesz != n->key.sz ||
4100: strncmp(n->key.p, name, namesz)))
1.92 schwarze 4101: n = n->next;
1.94 kristaps 4102:
4103: if (NULL == n) {
1.106 kristaps 4104: /* Create a new string table entry. */
1.166 kristaps 4105: n = mandoc_malloc(sizeof(struct roffkv));
4106: n->key.p = mandoc_strndup(name, namesz);
4107: n->key.sz = namesz;
4108: n->val.p = NULL;
4109: n->val.sz = 0;
1.164 kristaps 4110: n->next = *r;
4111: *r = n;
1.193 schwarze 4112: } else if (0 == append) {
1.166 kristaps 4113: free(n->val.p);
4114: n->val.p = NULL;
4115: n->val.sz = 0;
1.106 kristaps 4116: }
4117:
4118: if (NULL == string)
4119: return;
4120:
4121: /*
4122: * One additional byte for the '\n' in multiline mode,
4123: * and one for the terminating '\0'.
4124: */
1.193 schwarze 4125: newch = stringsz + (1 < append ? 2u : 1u);
1.164 kristaps 4126:
1.166 kristaps 4127: if (NULL == n->val.p) {
4128: n->val.p = mandoc_malloc(newch);
4129: *n->val.p = '\0';
1.106 kristaps 4130: oldch = 0;
4131: } else {
1.166 kristaps 4132: oldch = n->val.sz;
4133: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.106 kristaps 4134: }
4135:
4136: /* Skip existing content in the destination buffer. */
1.166 kristaps 4137: c = n->val.p + (int)oldch;
1.106 kristaps 4138:
4139: /* Append new content to the destination buffer. */
1.164 kristaps 4140: i = 0;
4141: while (i < (int)stringsz) {
1.106 kristaps 4142: /*
4143: * Rudimentary roff copy mode:
4144: * Handle escaped backslashes.
4145: */
1.164 kristaps 4146: if ('\\' == string[i] && '\\' == string[i + 1])
4147: i++;
4148: *c++ = string[i++];
1.106 kristaps 4149: }
1.94 kristaps 4150:
1.106 kristaps 4151: /* Append terminating bytes. */
1.193 schwarze 4152: if (1 < append)
1.106 kristaps 4153: *c++ = '\n';
1.163 kristaps 4154:
1.106 kristaps 4155: *c = '\0';
1.166 kristaps 4156: n->val.sz = (int)(c - n->val.p);
1.92 schwarze 4157: }
4158:
1.94 kristaps 4159: static const char *
1.325 schwarze 4160: roff_getstrn(struct roff *r, const char *name, size_t len,
1.315 schwarze 4161: int *deftype)
1.92 schwarze 4162: {
1.315 schwarze 4163: const struct roffkv *n;
1.325 schwarze 4164: int found, i;
1.315 schwarze 4165: enum roff_tok tok;
4166:
1.325 schwarze 4167: found = 0;
4168: for (n = r->strtab; n != NULL; n = n->next) {
4169: if (strncmp(name, n->key.p, len) != 0 ||
4170: n->key.p[len] != '\0' || n->val.p == NULL)
4171: continue;
4172: if (*deftype & ROFFDEF_USER) {
4173: *deftype = ROFFDEF_USER;
4174: return n->val.p;
4175: } else {
4176: found = 1;
4177: break;
4178: }
4179: }
4180: for (n = r->rentab; n != NULL; n = n->next) {
4181: if (strncmp(name, n->key.p, len) != 0 ||
4182: n->key.p[len] != '\0' || n->val.p == NULL)
4183: continue;
4184: if (*deftype & ROFFDEF_REN) {
4185: *deftype = ROFFDEF_REN;
4186: return n->val.p;
4187: } else {
4188: found = 1;
4189: break;
1.315 schwarze 4190: }
4191: }
1.325 schwarze 4192: for (i = 0; i < PREDEFS_MAX; i++) {
4193: if (strncmp(name, predefs[i].name, len) != 0 ||
4194: predefs[i].name[len] != '\0')
4195: continue;
4196: if (*deftype & ROFFDEF_PRE) {
4197: *deftype = ROFFDEF_PRE;
4198: return predefs[i].str;
4199: } else {
4200: found = 1;
4201: break;
1.315 schwarze 4202: }
4203: }
1.356 schwarze 4204: if (r->man->meta.macroset != MACROSET_MAN) {
1.325 schwarze 4205: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
4206: if (strncmp(name, roff_name[tok], len) != 0 ||
4207: roff_name[tok][len] != '\0')
4208: continue;
4209: if (*deftype & ROFFDEF_STD) {
4210: *deftype = ROFFDEF_STD;
4211: return NULL;
4212: } else {
4213: found = 1;
4214: break;
1.315 schwarze 4215: }
4216: }
4217: }
1.356 schwarze 4218: if (r->man->meta.macroset != MACROSET_MDOC) {
1.325 schwarze 4219: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
4220: if (strncmp(name, roff_name[tok], len) != 0 ||
4221: roff_name[tok][len] != '\0')
4222: continue;
4223: if (*deftype & ROFFDEF_STD) {
4224: *deftype = ROFFDEF_STD;
4225: return NULL;
4226: } else {
4227: found = 1;
4228: break;
1.315 schwarze 4229: }
4230: }
1.325 schwarze 4231: }
4232:
4233: if (found == 0 && *deftype != ROFFDEF_ANY) {
4234: if (*deftype & ROFFDEF_REN) {
4235: /*
4236: * This might still be a request,
4237: * so do not treat it as undefined yet.
4238: */
4239: *deftype = ROFFDEF_UNDEF;
4240: return NULL;
1.315 schwarze 4241: }
1.325 schwarze 4242:
4243: /* Using an undefined string defines it to be empty. */
4244:
4245: roff_setstrn(&r->strtab, name, len, "", 0, 0);
4246: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.315 schwarze 4247: }
1.325 schwarze 4248:
1.315 schwarze 4249: *deftype = 0;
1.277 schwarze 4250: return NULL;
1.92 schwarze 4251: }
4252:
1.94 kristaps 4253: static void
1.167 kristaps 4254: roff_freestr(struct roffkv *r)
1.92 schwarze 4255: {
1.166 kristaps 4256: struct roffkv *n, *nn;
1.92 schwarze 4257:
1.167 kristaps 4258: for (n = r; n; n = nn) {
1.166 kristaps 4259: free(n->key.p);
4260: free(n->val.p);
1.92 schwarze 4261: nn = n->next;
4262: free(n);
4263: }
1.114 kristaps 4264: }
1.266 schwarze 4265:
4266: /* --- accessors and utility functions ------------------------------------ */
1.164 kristaps 4267:
4268: /*
4269: * Duplicate an input string, making the appropriate character
4270: * conversations (as stipulated by `tr') along the way.
4271: * Returns a heap-allocated string with all the replacements made.
4272: */
4273: char *
4274: roff_strdup(const struct roff *r, const char *p)
4275: {
1.166 kristaps 4276: const struct roffkv *cp;
1.164 kristaps 4277: char *res;
4278: const char *pp;
4279: size_t ssz, sz;
4280: enum mandoc_esc esc;
4281:
1.167 kristaps 4282: if (NULL == r->xmbtab && NULL == r->xtab)
1.277 schwarze 4283: return mandoc_strdup(p);
1.164 kristaps 4284: else if ('\0' == *p)
1.277 schwarze 4285: return mandoc_strdup("");
1.164 kristaps 4286:
4287: /*
4288: * Step through each character looking for term matches
4289: * (remember that a `tr' can be invoked with an escape, which is
4290: * a glyph but the escape is multi-character).
4291: * We only do this if the character hash has been initialised
4292: * and the string is >0 length.
4293: */
4294:
4295: res = NULL;
4296: ssz = 0;
4297:
4298: while ('\0' != *p) {
1.289 schwarze 4299: assert((unsigned int)*p < 128);
4300: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.167 kristaps 4301: sz = r->xtab[(int)*p].sz;
4302: res = mandoc_realloc(res, ssz + sz + 1);
4303: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
4304: ssz += sz;
4305: p++;
4306: continue;
4307: } else if ('\\' != *p) {
4308: res = mandoc_realloc(res, ssz + 2);
4309: res[ssz++] = *p++;
4310: continue;
4311: }
4312:
1.164 kristaps 4313: /* Search for term matches. */
1.167 kristaps 4314: for (cp = r->xmbtab; cp; cp = cp->next)
1.166 kristaps 4315: if (0 == strncmp(p, cp->key.p, cp->key.sz))
1.164 kristaps 4316: break;
4317:
4318: if (NULL != cp) {
4319: /*
4320: * A match has been found.
4321: * Append the match to the array and move
4322: * forward by its keysize.
4323: */
1.207 schwarze 4324: res = mandoc_realloc(res,
4325: ssz + cp->val.sz + 1);
1.166 kristaps 4326: memcpy(res + ssz, cp->val.p, cp->val.sz);
4327: ssz += cp->val.sz;
4328: p += (int)cp->key.sz;
1.164 kristaps 4329: continue;
4330: }
4331:
1.167 kristaps 4332: /*
4333: * Handle escapes carefully: we need to copy
4334: * over just the escape itself, or else we might
4335: * do replacements within the escape itself.
4336: * Make sure to pass along the bogus string.
4337: */
4338: pp = p++;
4339: esc = mandoc_escape(&p, NULL, NULL);
4340: if (ESCAPE_ERROR == esc) {
4341: sz = strlen(pp);
1.164 kristaps 4342: res = mandoc_realloc(res, ssz + sz + 1);
4343: memcpy(res + ssz, pp, sz);
1.167 kristaps 4344: break;
1.164 kristaps 4345: }
1.207 schwarze 4346: /*
4347: * We bail out on bad escapes.
1.167 kristaps 4348: * No need to warn: we already did so when
1.355 schwarze 4349: * roff_expand() was called.
1.167 kristaps 4350: */
4351: sz = (int)(p - pp);
4352: res = mandoc_realloc(res, ssz + sz + 1);
4353: memcpy(res + ssz, pp, sz);
4354: ssz += sz;
1.164 kristaps 4355: }
4356:
4357: res[(int)ssz] = '\0';
1.277 schwarze 4358: return res;
1.227 schwarze 4359: }
4360:
4361: int
4362: roff_getformat(const struct roff *r)
4363: {
4364:
1.277 schwarze 4365: return r->format;
1.174 kristaps 4366: }
4367:
4368: /*
1.207 schwarze 4369: * Find out whether a line is a macro line or not.
1.174 kristaps 4370: * If it is, adjust the current position and return one; if it isn't,
4371: * return zero and don't change the current position.
4372: * If the control character has been set with `.cc', then let that grain
4373: * precedence.
4374: * This is slighly contrary to groff, where using the non-breaking
4375: * control character when `cc' has been invoked will cause the
4376: * non-breaking macro contents to be printed verbatim.
4377: */
4378: int
4379: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
4380: {
4381: int pos;
4382:
4383: pos = *ppos;
4384:
1.303 schwarze 4385: if (r->control != '\0' && cp[pos] == r->control)
1.174 kristaps 4386: pos++;
1.303 schwarze 4387: else if (r->control != '\0')
1.277 schwarze 4388: return 0;
1.174 kristaps 4389: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
4390: pos += 2;
4391: else if ('.' == cp[pos] || '\'' == cp[pos])
4392: pos++;
4393: else
1.277 schwarze 4394: return 0;
1.174 kristaps 4395:
4396: while (' ' == cp[pos] || '\t' == cp[pos])
4397: pos++;
4398:
4399: *ppos = pos;
1.277 schwarze 4400: return 1;
1.74 kristaps 4401: }
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