Annotation of mandoc/roff.c, Revision 1.400
1.400 ! schwarze 1: /* $Id: roff.c,v 1.399 2023/10/23 20:25:02 schwarze Exp $ */
1.1 kristaps 2: /*
1.399 schwarze 3: * Copyright (c) 2010-2015, 2017-2023 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",
1.400 ! schwarze 370: "UE", "MT", "ME", "MR",
! 371: NULL
1.294 schwarze 372: };
373: const char *const *roff_name = __roff_name;
374:
375: static struct roffmac roffs[TOKEN_NONE] = {
1.358 schwarze 376: { roff_noarg, NULL, NULL, 0 }, /* br */
1.305 schwarze 377: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.358 schwarze 378: { roff_noarg, NULL, NULL, 0 }, /* fi */
1.297 schwarze 379: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.298 schwarze 380: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.384 schwarze 381: { roff_mc, NULL, NULL, 0 }, /* mc */
1.358 schwarze 382: { roff_noarg, NULL, NULL, 0 }, /* nf */
1.312 schwarze 383: { roff_onearg, NULL, NULL, 0 }, /* po */
1.309 schwarze 384: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.299 schwarze 385: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.300 schwarze 386: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.301 schwarze 387: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.296 schwarze 388: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.295 schwarze 389: { roff_unsupp, NULL, NULL, 0 }, /* ab */
390: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
391: { roff_line_ignore, NULL, NULL, 0 }, /* af */
392: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.311 schwarze 393: { roff_als, NULL, NULL, 0 }, /* als */
1.295 schwarze 394: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
395: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
396: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
397: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
398: { roff_ds, NULL, NULL, 0 }, /* as */
399: { roff_ds, NULL, NULL, 0 }, /* as1 */
400: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
401: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
402: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
403: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
404: { roff_unsupp, NULL, NULL, 0 }, /* blm */
405: { roff_unsupp, NULL, NULL, 0 }, /* box */
406: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
407: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
408: { roff_unsupp, NULL, NULL, 0 }, /* BP */
1.364 schwarze 409: { roff_break, NULL, NULL, 0 }, /* break */
1.295 schwarze 410: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
411: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.358 schwarze 412: { roff_noarg, NULL, NULL, 0 }, /* brp */
1.295 schwarze 413: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
414: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
415: { roff_cc, NULL, NULL, 0 }, /* cc */
416: { roff_insec, NULL, NULL, 0 }, /* cf */
417: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
418: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
1.341 schwarze 419: { roff_char, NULL, NULL, 0 }, /* char */
1.295 schwarze 420: { roff_unsupp, NULL, NULL, 0 }, /* chop */
421: { roff_line_ignore, NULL, NULL, 0 }, /* class */
422: { roff_insec, NULL, NULL, 0 }, /* close */
423: { roff_unsupp, NULL, NULL, 0 }, /* CL */
424: { roff_line_ignore, NULL, NULL, 0 }, /* color */
425: { roff_unsupp, NULL, NULL, 0 }, /* composite */
426: { roff_unsupp, NULL, NULL, 0 }, /* continue */
427: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
428: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
429: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
430: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
431: { roff_unsupp, NULL, NULL, 0 }, /* da */
432: { roff_unsupp, NULL, NULL, 0 }, /* dch */
433: { roff_Dd, NULL, NULL, 0 }, /* Dd */
434: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
435: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
436: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
437: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
438: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
439: { roff_unsupp, NULL, NULL, 0 }, /* device */
440: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
441: { roff_unsupp, NULL, NULL, 0 }, /* di */
442: { roff_unsupp, NULL, NULL, 0 }, /* do */
443: { roff_ds, NULL, NULL, 0 }, /* ds */
444: { roff_ds, NULL, NULL, 0 }, /* ds1 */
445: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
446: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.303 schwarze 447: { roff_ec, NULL, NULL, 0 }, /* ec */
1.295 schwarze 448: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
449: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
450: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
451: { roff_unsupp, NULL, NULL, 0 }, /* em */
452: { roff_EN, NULL, NULL, 0 }, /* EN */
1.303 schwarze 453: { roff_eo, NULL, NULL, 0 }, /* eo */
1.295 schwarze 454: { roff_unsupp, NULL, NULL, 0 }, /* EP */
455: { roff_EQ, NULL, NULL, 0 }, /* EQ */
456: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
457: { roff_unsupp, NULL, NULL, 0 }, /* ev */
458: { roff_unsupp, NULL, NULL, 0 }, /* evc */
459: { roff_unsupp, NULL, NULL, 0 }, /* ex */
460: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
461: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
462: { roff_unsupp, NULL, NULL, 0 }, /* fc */
463: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
464: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
465: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
466: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
467: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
468: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
469: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
470: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
471: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
472: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
473: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
474: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
475: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
476: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
477: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
478: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
479: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
480: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
481: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
482: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
483: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
484: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
485: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
486: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
487: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
488: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
489: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
490: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
491: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
492: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
493: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
494: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
495: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
496: { roff_unsupp, NULL, NULL, 0 }, /* index */
497: { roff_it, NULL, NULL, 0 }, /* it */
498: { roff_unsupp, NULL, NULL, 0 }, /* itc */
499: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
500: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
501: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
502: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
503: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
504: { roff_unsupp, NULL, NULL, 0 }, /* lc */
505: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
506: { roff_unsupp, NULL, NULL, 0 }, /* lds */
507: { roff_unsupp, NULL, NULL, 0 }, /* length */
508: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
509: { roff_insec, NULL, NULL, 0 }, /* lf */
510: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
511: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
512: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
513: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
514: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
515: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
516: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
517: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
518: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
519: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
520: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
521: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
522: { roff_insec, NULL, NULL, 0 }, /* mso */
523: { roff_line_ignore, NULL, NULL, 0 }, /* na */
524: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
525: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
526: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
527: { roff_unsupp, NULL, NULL, 0 }, /* nm */
528: { roff_unsupp, NULL, NULL, 0 }, /* nn */
1.330 schwarze 529: { roff_nop, NULL, NULL, 0 }, /* nop */
1.295 schwarze 530: { roff_nr, NULL, NULL, 0 }, /* nr */
531: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
532: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
533: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
534: { roff_insec, NULL, NULL, 0 }, /* nx */
535: { roff_insec, NULL, NULL, 0 }, /* open */
536: { roff_insec, NULL, NULL, 0 }, /* opena */
537: { roff_line_ignore, NULL, NULL, 0 }, /* os */
538: { roff_unsupp, NULL, NULL, 0 }, /* output */
539: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
540: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
541: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
542: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
543: { roff_insec, NULL, NULL, 0 }, /* pi */
544: { roff_unsupp, NULL, NULL, 0 }, /* PI */
545: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
546: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
547: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
548: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
549: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
550: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
551: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
552: { roff_insec, NULL, NULL, 0 }, /* pso */
553: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
554: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
555: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
556: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
557: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
1.339 schwarze 558: { roff_return, NULL, NULL, 0 }, /* return */
1.295 schwarze 559: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
560: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
561: { roff_rm, NULL, NULL, 0 }, /* rm */
1.306 schwarze 562: { roff_rn, NULL, NULL, 0 }, /* rn */
1.295 schwarze 563: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
564: { roff_rr, NULL, NULL, 0 }, /* rr */
565: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
566: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
567: { roff_unsupp, NULL, NULL, 0 }, /* schar */
568: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
569: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
1.339 schwarze 570: { roff_shift, NULL, NULL, 0 }, /* shift */
1.295 schwarze 571: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
572: { roff_so, NULL, NULL, 0 }, /* so */
573: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
574: { roff_line_ignore, NULL, NULL, 0 }, /* special */
575: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
576: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
577: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
578: { roff_unsupp, NULL, NULL, 0 }, /* substring */
579: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
580: { roff_insec, NULL, NULL, 0 }, /* sy */
581: { roff_T_, NULL, NULL, 0 }, /* T& */
582: { roff_unsupp, NULL, NULL, 0 }, /* tc */
583: { roff_TE, NULL, NULL, 0 }, /* TE */
1.315 schwarze 584: { roff_Dd, NULL, NULL, 0 }, /* TH */
1.295 schwarze 585: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
586: { roff_unsupp, NULL, NULL, 0 }, /* tl */
587: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
588: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
589: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
590: { roff_tr, NULL, NULL, 0 }, /* tr */
591: { roff_line_ignore, NULL, NULL, 0 }, /* track */
592: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
593: { roff_insec, NULL, NULL, 0 }, /* trf */
594: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
595: { roff_unsupp, NULL, NULL, 0 }, /* trin */
596: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
597: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
598: { roff_TS, NULL, NULL, 0 }, /* TS */
599: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
600: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
601: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
602: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
603: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
604: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
605: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
606: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
607: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
608: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
609: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
610: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
611: { roff_unsupp, NULL, NULL, 0 }, /* wh */
1.340 schwarze 612: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /*while*/
1.295 schwarze 613: { roff_insec, NULL, NULL, 0 }, /* write */
614: { roff_insec, NULL, NULL, 0 }, /* writec */
615: { roff_insec, NULL, NULL, 0 }, /* writem */
616: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
617: { roff_cblock, NULL, NULL, 0 }, /* . */
1.306 schwarze 618: { roff_renamed, NULL, NULL, 0 },
1.295 schwarze 619: { roff_userdef, NULL, NULL, 0 }
1.67 kristaps 620: };
621:
1.141 kristaps 622: /* Array of injected predefined strings. */
623: #define PREDEFS_MAX 38
624: static const struct predef predefs[PREDEFS_MAX] = {
625: #include "predefs.in"
626: };
627:
1.305 schwarze 628: static int roffce_lines; /* number of input lines to center */
629: static struct roff_node *roffce_node; /* active request */
1.178 schwarze 630: static int roffit_lines; /* number of lines to delay */
631: static char *roffit_macro; /* nil-terminated macro line */
632:
1.207 schwarze 633:
1.266 schwarze 634: /* --- request table ------------------------------------------------------ */
635:
1.295 schwarze 636: struct ohash *
637: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.85 kristaps 638: {
1.295 schwarze 639: struct ohash *htab;
640: struct roffreq *req;
641: enum roff_tok tok;
642: size_t sz;
643: unsigned int slot;
1.85 kristaps 644:
1.295 schwarze 645: htab = mandoc_malloc(sizeof(*htab));
646: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.85 kristaps 647:
1.295 schwarze 648: for (tok = mintok; tok < maxtok; tok++) {
1.296 schwarze 649: if (roff_name[tok] == NULL)
650: continue;
1.295 schwarze 651: sz = strlen(roff_name[tok]);
652: req = mandoc_malloc(sizeof(*req) + sz + 1);
653: req->tok = tok;
654: memcpy(req->name, roff_name[tok], sz + 1);
655: slot = ohash_qlookup(htab, req->name);
656: ohash_insert(htab, slot, req);
1.85 kristaps 657: }
1.295 schwarze 658: return htab;
1.85 kristaps 659: }
660:
1.295 schwarze 661: void
662: roffhash_free(struct ohash *htab)
1.67 kristaps 663: {
1.295 schwarze 664: struct roffreq *req;
665: unsigned int slot;
1.67 kristaps 666:
1.295 schwarze 667: if (htab == NULL)
668: return;
669: for (req = ohash_first(htab, &slot); req != NULL;
670: req = ohash_next(htab, &slot))
671: free(req);
672: ohash_delete(htab);
673: free(htab);
674: }
675:
676: enum roff_tok
677: roffhash_find(struct ohash *htab, const char *name, size_t sz)
678: {
679: struct roffreq *req;
680: const char *end;
681:
682: if (sz) {
683: end = name + sz;
684: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
685: } else
686: req = ohash_find(htab, ohash_qlookup(htab, name));
687: return req == NULL ? TOKEN_NONE : req->tok;
1.67 kristaps 688: }
689:
1.266 schwarze 690: /* --- stack of request blocks -------------------------------------------- */
691:
1.67 kristaps 692: /*
693: * Pop the current node off of the stack of roff instructions currently
1.364 schwarze 694: * pending. Return 1 if it is a loop or 0 otherwise.
1.67 kristaps 695: */
1.340 schwarze 696: static int
1.67 kristaps 697: roffnode_pop(struct roff *r)
698: {
699: struct roffnode *p;
1.340 schwarze 700: int inloop;
1.67 kristaps 701:
1.207 schwarze 702: p = r->last;
1.340 schwarze 703: inloop = p->tok == ROFF_while;
704: r->last = p->parent;
1.106 kristaps 705: free(p->name);
706: free(p->end);
1.67 kristaps 707: free(p);
1.340 schwarze 708: return inloop;
1.67 kristaps 709: }
710:
711: /*
712: * Push a roff node onto the instruction stack. This must later be
713: * removed with roffnode_pop().
714: */
1.98 schwarze 715: static void
1.294 schwarze 716: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.106 kristaps 717: int line, int col)
1.67 kristaps 718: {
719: struct roffnode *p;
720:
1.98 schwarze 721: p = mandoc_calloc(1, sizeof(struct roffnode));
1.67 kristaps 722: p->tok = tok;
1.106 kristaps 723: if (name)
724: p->name = mandoc_strdup(name);
1.67 kristaps 725: p->parent = r->last;
726: p->line = line;
727: p->col = col;
1.198 schwarze 728: p->rule = p->parent ? p->parent->rule : 0;
1.67 kristaps 729:
730: r->last = p;
731: }
732:
1.266 schwarze 733: /* --- roff parser state data management ---------------------------------- */
734:
1.67 kristaps 735: static void
736: roff_free1(struct roff *r)
737: {
1.167 kristaps 738: int i;
1.67 kristaps 739:
1.346 schwarze 740: tbl_free(r->first_tbl);
1.113 kristaps 741: r->first_tbl = r->last_tbl = r->tbl = NULL;
742:
1.347 schwarze 743: eqn_free(r->last_eqn);
1.319 schwarze 744: r->last_eqn = r->eqn = NULL;
1.125 kristaps 745:
1.339 schwarze 746: while (r->mstackpos >= 0)
747: roff_userret(r);
748:
1.67 kristaps 749: while (r->last)
750: roffnode_pop(r);
1.109 kristaps 751:
1.223 schwarze 752: free (r->rstack);
753: r->rstack = NULL;
754: r->rstacksz = 0;
755: r->rstackpos = -1;
756:
757: roff_freereg(r->regtab);
758: r->regtab = NULL;
759:
1.167 kristaps 760: roff_freestr(r->strtab);
1.306 schwarze 761: roff_freestr(r->rentab);
1.167 kristaps 762: roff_freestr(r->xmbtab);
1.306 schwarze 763: r->strtab = r->rentab = r->xmbtab = NULL;
1.167 kristaps 764:
765: if (r->xtab)
766: for (i = 0; i < 128; i++)
767: free(r->xtab[i].p);
768: free(r->xtab);
769: r->xtab = NULL;
1.67 kristaps 770: }
771:
772: void
773: roff_reset(struct roff *r)
774: {
775: roff_free1(r);
1.367 schwarze 776: r->options |= MPARSE_COMMENT;
1.227 schwarze 777: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.303 schwarze 778: r->control = '\0';
779: r->escape = '\\';
1.307 schwarze 780: roffce_lines = 0;
781: roffce_node = NULL;
782: roffit_lines = 0;
783: roffit_macro = NULL;
1.67 kristaps 784: }
785:
786: void
787: roff_free(struct roff *r)
788: {
1.366 schwarze 789: int i;
1.339 schwarze 790:
1.67 kristaps 791: roff_free1(r);
1.339 schwarze 792: for (i = 0; i < r->mstacksz; i++)
793: free(r->mstack[i].argv);
794: free(r->mstack);
1.295 schwarze 795: roffhash_free(r->reqtab);
1.67 kristaps 796: free(r);
797: }
798:
799: struct roff *
1.351 schwarze 800: roff_alloc(int options)
1.67 kristaps 801: {
802: struct roff *r;
803:
1.98 schwarze 804: r = mandoc_calloc(1, sizeof(struct roff));
1.328 schwarze 805: r->reqtab = roffhash_alloc(0, ROFF_RENAMED);
1.367 schwarze 806: r->options = options | MPARSE_COMMENT;
1.227 schwarze 807: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.339 schwarze 808: r->mstackpos = -1;
1.82 kristaps 809: r->rstackpos = -1;
1.303 schwarze 810: r->escape = '\\';
1.277 schwarze 811: return r;
1.265 schwarze 812: }
813:
1.266 schwarze 814: /* --- syntax tree state data management ---------------------------------- */
815:
1.265 schwarze 816: static void
817: roff_man_free1(struct roff_man *man)
818: {
1.356 schwarze 819: if (man->meta.first != NULL)
820: roff_node_delete(man, man->meta.first);
1.265 schwarze 821: free(man->meta.msec);
822: free(man->meta.vol);
823: free(man->meta.os);
824: free(man->meta.arch);
825: free(man->meta.title);
826: free(man->meta.name);
827: free(man->meta.date);
1.356 schwarze 828: free(man->meta.sodest);
1.265 schwarze 829: }
830:
1.357 schwarze 831: void
832: roff_state_reset(struct roff_man *man)
833: {
834: man->last = man->meta.first;
835: man->last_es = NULL;
836: man->flags = 0;
837: man->lastsec = man->lastnamed = SEC_NONE;
838: man->next = ROFF_NEXT_CHILD;
839: roff_setreg(man->roff, "nS", 0, '=');
840: }
841:
1.265 schwarze 842: static void
843: roff_man_alloc1(struct roff_man *man)
844: {
845: memset(&man->meta, 0, sizeof(man->meta));
1.356 schwarze 846: man->meta.first = mandoc_calloc(1, sizeof(*man->meta.first));
847: man->meta.first->type = ROFFT_ROOT;
848: man->meta.macroset = MACROSET_NONE;
1.357 schwarze 849: roff_state_reset(man);
1.265 schwarze 850: }
851:
852: void
853: roff_man_reset(struct roff_man *man)
854: {
855: roff_man_free1(man);
856: roff_man_alloc1(man);
857: }
858:
859: void
860: roff_man_free(struct roff_man *man)
861: {
862: roff_man_free1(man);
1.380 schwarze 863: free(man->os_r);
1.265 schwarze 864: free(man);
865: }
866:
867: struct roff_man *
1.351 schwarze 868: roff_man_alloc(struct roff *roff, const char *os_s, int quick)
1.265 schwarze 869: {
870: struct roff_man *man;
871:
872: man = mandoc_calloc(1, sizeof(*man));
873: man->roff = roff;
1.316 schwarze 874: man->os_s = os_s;
1.265 schwarze 875: man->quick = quick;
876: roff_man_alloc1(man);
1.296 schwarze 877: roff->man = man;
1.277 schwarze 878: return man;
1.67 kristaps 879: }
880:
1.266 schwarze 881: /* --- syntax tree handling ----------------------------------------------- */
882:
883: struct roff_node *
884: roff_node_alloc(struct roff_man *man, int line, int pos,
885: enum roff_type type, int tok)
886: {
887: struct roff_node *n;
888:
889: n = mandoc_calloc(1, sizeof(*n));
890: n->line = line;
891: n->pos = pos;
892: n->tok = tok;
893: n->type = type;
894: n->sec = man->lastsec;
895:
896: if (man->flags & MDOC_SYNOPSIS)
1.285 schwarze 897: n->flags |= NODE_SYNPRETTY;
1.266 schwarze 898: else
1.285 schwarze 899: n->flags &= ~NODE_SYNPRETTY;
1.360 schwarze 900: if ((man->flags & (ROFF_NOFILL | ROFF_NONOFILL)) == ROFF_NOFILL)
1.359 schwarze 901: n->flags |= NODE_NOFILL;
902: else
903: n->flags &= ~NODE_NOFILL;
1.266 schwarze 904: if (man->flags & MDOC_NEWLINE)
1.285 schwarze 905: n->flags |= NODE_LINE;
1.266 schwarze 906: man->flags &= ~MDOC_NEWLINE;
907:
1.277 schwarze 908: return n;
1.266 schwarze 909: }
910:
911: void
912: roff_node_append(struct roff_man *man, struct roff_node *n)
913: {
914:
915: switch (man->next) {
916: case ROFF_NEXT_SIBLING:
1.281 schwarze 917: if (man->last->next != NULL) {
918: n->next = man->last->next;
919: man->last->next->prev = n;
920: } else
921: man->last->parent->last = n;
1.266 schwarze 922: man->last->next = n;
923: n->prev = man->last;
924: n->parent = man->last->parent;
925: break;
926: case ROFF_NEXT_CHILD:
1.287 schwarze 927: if (man->last->child != NULL) {
928: n->next = man->last->child;
929: man->last->child->prev = n;
930: } else
931: man->last->last = n;
1.266 schwarze 932: man->last->child = n;
933: n->parent = man->last;
934: break;
935: default:
936: abort();
937: }
1.282 schwarze 938: man->last = n;
1.266 schwarze 939:
940: switch (n->type) {
941: case ROFFT_HEAD:
942: n->parent->head = n;
943: break;
944: case ROFFT_BODY:
1.282 schwarze 945: if (n->end != ENDBODY_NOT)
946: return;
1.266 schwarze 947: n->parent->body = n;
948: break;
949: case ROFFT_TAIL:
950: n->parent->tail = n;
951: break;
952: default:
1.282 schwarze 953: return;
1.266 schwarze 954: }
1.282 schwarze 955:
956: /*
957: * Copy over the normalised-data pointer of our parent. Not
958: * everybody has one, but copying a null pointer is fine.
959: */
960:
961: n->norm = n->parent->norm;
962: assert(n->parent->type == ROFFT_BLOCK);
1.266 schwarze 963: }
964:
1.267 schwarze 965: void
966: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
967: {
968: struct roff_node *n;
969:
970: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
971: n->string = roff_strdup(man->roff, word);
972: roff_node_append(man, n);
1.286 schwarze 973: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 974: man->next = ROFF_NEXT_SIBLING;
975: }
976:
977: void
978: roff_word_append(struct roff_man *man, const char *word)
979: {
980: struct roff_node *n;
981: char *addstr, *newstr;
982:
983: n = man->last;
984: addstr = roff_strdup(man->roff, word);
985: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
986: free(addstr);
987: free(n->string);
988: n->string = newstr;
989: man->next = ROFF_NEXT_SIBLING;
1.268 schwarze 990: }
991:
992: void
993: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
994: {
995: struct roff_node *n;
996:
997: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
998: roff_node_append(man, n);
999: man->next = ROFF_NEXT_CHILD;
1000: }
1001:
1002: struct roff_node *
1003: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
1004: {
1005: struct roff_node *n;
1006:
1007: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
1008: roff_node_append(man, n);
1009: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1010: return n;
1.267 schwarze 1011: }
1012:
1.266 schwarze 1013: struct roff_node *
1014: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
1015: {
1016: struct roff_node *n;
1017:
1018: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
1019: roff_node_append(man, n);
1020: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1021: return n;
1.266 schwarze 1022: }
1023:
1024: struct roff_node *
1025: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1026: {
1027: struct roff_node *n;
1028:
1029: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1030: roff_node_append(man, n);
1031: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1032: return n;
1.267 schwarze 1033: }
1034:
1.321 schwarze 1035: static void
1.346 schwarze 1036: roff_addtbl(struct roff_man *man, int line, struct tbl_node *tbl)
1.267 schwarze 1037: {
1038: struct roff_node *n;
1.346 schwarze 1039: struct tbl_span *span;
1.267 schwarze 1040:
1.356 schwarze 1041: if (man->meta.macroset == MACROSET_MAN)
1.302 schwarze 1042: man_breakscope(man, ROFF_TS);
1.321 schwarze 1043: while ((span = tbl_span(tbl)) != NULL) {
1.346 schwarze 1044: n = roff_node_alloc(man, line, 0, ROFFT_TBL, TOKEN_NONE);
1.321 schwarze 1045: n->span = span;
1046: roff_node_append(man, n);
1047: n->flags |= NODE_VALID | NODE_ENDED;
1048: man->next = ROFF_NEXT_SIBLING;
1049: }
1.266 schwarze 1050: }
1051:
1052: void
1053: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1054: {
1055:
1056: /* Adjust siblings. */
1057:
1058: if (n->prev)
1059: n->prev->next = n->next;
1060: if (n->next)
1061: n->next->prev = n->prev;
1062:
1063: /* Adjust parent. */
1064:
1065: if (n->parent != NULL) {
1066: if (n->parent->child == n)
1067: n->parent->child = n->next;
1068: if (n->parent->last == n)
1069: n->parent->last = n->prev;
1070: }
1071:
1072: /* Adjust parse point. */
1073:
1074: if (man == NULL)
1075: return;
1076: if (man->last == n) {
1077: if (n->prev == NULL) {
1078: man->last = n->parent;
1079: man->next = ROFF_NEXT_CHILD;
1080: } else {
1081: man->last = n->prev;
1082: man->next = ROFF_NEXT_SIBLING;
1083: }
1084: }
1.356 schwarze 1085: if (man->meta.first == n)
1086: man->meta.first = NULL;
1.344 schwarze 1087: }
1088:
1089: void
1090: roff_node_relink(struct roff_man *man, struct roff_node *n)
1091: {
1092: roff_node_unlink(man, n);
1093: n->prev = n->next = NULL;
1094: roff_node_append(man, n);
1.266 schwarze 1095: }
1096:
1097: void
1098: roff_node_free(struct roff_node *n)
1099: {
1100:
1101: if (n->args != NULL)
1102: mdoc_argv_free(n->args);
1103: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1104: free(n->norm);
1.347 schwarze 1105: eqn_box_free(n->eqn);
1.266 schwarze 1106: free(n->string);
1.374 schwarze 1107: free(n->tag);
1.266 schwarze 1108: free(n);
1109: }
1110:
1111: void
1112: roff_node_delete(struct roff_man *man, struct roff_node *n)
1113: {
1114:
1115: while (n->child != NULL)
1116: roff_node_delete(man, n->child);
1117: roff_node_unlink(man, n);
1118: roff_node_free(n);
1.370 schwarze 1119: }
1120:
1121: int
1122: roff_node_transparent(struct roff_node *n)
1123: {
1124: if (n == NULL)
1125: return 0;
1126: if (n->type == ROFFT_COMMENT || n->flags & NODE_NOPRT)
1127: return 1;
1.373 schwarze 1128: return roff_tok_transparent(n->tok);
1129: }
1130:
1131: int
1132: roff_tok_transparent(enum roff_tok tok)
1133: {
1134: switch (tok) {
1.370 schwarze 1135: case ROFF_ft:
1136: case ROFF_ll:
1137: case ROFF_mc:
1138: case ROFF_po:
1139: case ROFF_ta:
1140: case MDOC_Db:
1141: case MDOC_Es:
1142: case MDOC_Sm:
1143: case MDOC_Tg:
1144: case MAN_DT:
1145: case MAN_UC:
1146: case MAN_PD:
1147: case MAN_AT:
1148: return 1;
1149: default:
1150: return 0;
1151: }
1152: }
1153:
1154: struct roff_node *
1155: roff_node_child(struct roff_node *n)
1156: {
1157: for (n = n->child; roff_node_transparent(n); n = n->next)
1158: continue;
1159: return n;
1160: }
1161:
1162: struct roff_node *
1163: roff_node_prev(struct roff_node *n)
1164: {
1165: do {
1166: n = n->prev;
1167: } while (roff_node_transparent(n));
1168: return n;
1169: }
1170:
1171: struct roff_node *
1172: roff_node_next(struct roff_node *n)
1173: {
1174: do {
1175: n = n->next;
1176: } while (roff_node_transparent(n));
1177: return n;
1.269 schwarze 1178: }
1179:
1180: void
1181: deroff(char **dest, const struct roff_node *n)
1182: {
1183: char *cp;
1184: size_t sz;
1185:
1.371 schwarze 1186: if (n->string == NULL) {
1.269 schwarze 1187: for (n = n->child; n != NULL; n = n->next)
1188: deroff(dest, n);
1189: return;
1190: }
1191:
1.288 schwarze 1192: /* Skip leading whitespace. */
1.269 schwarze 1193:
1.288 schwarze 1194: for (cp = n->string; *cp != '\0'; cp++) {
1.289 schwarze 1195: if (cp[0] == '\\' && cp[1] != '\0' &&
1196: strchr(" %&0^|~", cp[1]) != NULL)
1.269 schwarze 1197: cp++;
1.288 schwarze 1198: else if ( ! isspace((unsigned char)*cp))
1.269 schwarze 1199: break;
1200: }
1201:
1.289 schwarze 1202: /* Skip trailing backslash. */
1203:
1204: sz = strlen(cp);
1.290 schwarze 1205: if (sz > 0 && cp[sz - 1] == '\\')
1.289 schwarze 1206: sz--;
1207:
1.269 schwarze 1208: /* Skip trailing whitespace. */
1209:
1.289 schwarze 1210: for (; sz; sz--)
1.269 schwarze 1211: if ( ! isspace((unsigned char)cp[sz-1]))
1212: break;
1213:
1214: /* Skip empty strings. */
1215:
1216: if (sz == 0)
1217: return;
1218:
1219: if (*dest == NULL) {
1220: *dest = mandoc_strndup(cp, sz);
1221: return;
1222: }
1223:
1224: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1225: free(*dest);
1226: *dest = cp;
1.266 schwarze 1227: }
1228:
1229: /* --- main functions of the roff parser ---------------------------------- */
1230:
1.388 schwarze 1231: /*
1232: * Save comments preceding the title macro, for example in order to
1233: * preserve Copyright and license headers in HTML output,
1234: * provide diagnostics about RCS ids and trailing whitespace in comments,
1235: * then discard comments including preceding whitespace.
1236: * This function also handles input line continuation.
1237: */
1.387 schwarze 1238: static int
1.388 schwarze 1239: roff_parse_comment(struct roff *r, struct buf *buf, int ln, int pos, char ec)
1.387 schwarze 1240: {
1241: struct roff_node *n; /* used for header comments */
1242: const char *start; /* start of the string to process */
1243: const char *cp; /* for RCS id parsing */
1244: char *stesc; /* start of an escape sequence ('\\') */
1245: char *ep; /* end of comment string */
1246: int rcsid; /* kind of RCS id seen */
1247:
1248: for (start = stesc = buf->buf + pos;; stesc++) {
1.388 schwarze 1249: /*
1250: * XXX Ugly hack: Remove the newline character that
1251: * mparse_buf_r() appended to mark the end of input
1252: * if it is not preceded by an escape character.
1253: */
1254: if (stesc[0] == '\n') {
1255: assert(stesc[1] == '\0');
1256: stesc[0] = '\0';
1257: }
1258:
1.387 schwarze 1259: /* The line ends without continuation or comment. */
1260: if (stesc[0] == '\0')
1261: return ROFF_CONT;
1262:
1263: /* Unescaped byte: skip it. */
1.388 schwarze 1264: if (stesc[0] != ec)
1.387 schwarze 1265: continue;
1266:
1.388 schwarze 1267: /*
1268: * XXX Ugly hack: Do not attempt to append another line
1269: * if the function mparse_buf_r() appended a newline
1270: * character to indicate the end of input.
1271: */
1272: if (stesc[1] == '\n') {
1273: assert(stesc[2] == '\0');
1274: stesc[0] = '\0';
1275: return ROFF_CONT;
1276: }
1277:
1278: /*
1279: * An escape character at the end of an input line
1280: * requests line continuation.
1281: */
1.387 schwarze 1282: if (stesc[1] == '\0') {
1283: stesc[0] = '\0';
1284: return ROFF_IGN | ROFF_APPEND;
1285: }
1286:
1287: /* Found a comment: process it. */
1288: if (stesc[1] == '"' || stesc[1] == '#')
1289: break;
1290:
1291: /* Escaped escape character: skip them both. */
1.388 schwarze 1292: if (stesc[1] == ec)
1.387 schwarze 1293: stesc++;
1294: }
1295:
1296: /* Look for an RCS id in the comment. */
1297:
1298: rcsid = 0;
1299: if ((cp = strstr(stesc + 2, "$" "OpenBSD")) != NULL) {
1300: rcsid = 1 << MANDOC_OS_OPENBSD;
1301: cp += 8;
1302: } else if ((cp = strstr(stesc + 2, "$" "NetBSD")) != NULL) {
1303: rcsid = 1 << MANDOC_OS_NETBSD;
1304: cp += 7;
1305: }
1306: if (cp != NULL && isalnum((unsigned char)*cp) == 0 &&
1307: strchr(cp, '$') != NULL) {
1308: if (r->man->meta.rcsids & rcsid)
1309: mandoc_msg(MANDOCERR_RCS_REP, ln,
1310: (int)(stesc - buf->buf) + 2, "%s", stesc + 1);
1311: r->man->meta.rcsids |= rcsid;
1312: }
1313:
1314: /* Warn about trailing whitespace at the end of the comment. */
1315:
1316: ep = strchr(stesc + 2, '\0') - 1;
1317: if (*ep == '\n')
1318: *ep-- = '\0';
1319: if (*ep == ' ' || *ep == '\t')
1320: mandoc_msg(MANDOCERR_SPACE_EOL,
1321: ln, (int)(ep - buf->buf), NULL);
1322:
1323: /* Save comments preceding the title macro in the syntax tree. */
1324:
1325: if (r->options & MPARSE_COMMENT) {
1326: while (*ep == ' ' || *ep == '\t')
1327: ep--;
1328: ep[1] = '\0';
1329: n = roff_node_alloc(r->man, ln, stesc + 1 - buf->buf,
1330: ROFFT_COMMENT, TOKEN_NONE);
1331: n->string = mandoc_strdup(stesc + 2);
1332: roff_node_append(r->man, n);
1333: n->flags |= NODE_VALID | NODE_ENDED;
1334: r->man->next = ROFF_NEXT_SIBLING;
1335: }
1336:
1337: /* The comment requests line continuation. */
1338:
1339: if (stesc[1] == '#') {
1340: *stesc = '\0';
1341: return ROFF_IGN | ROFF_APPEND;
1342: }
1343:
1344: /* Discard the comment including preceding whitespace. */
1345:
1346: while (stesc > start && stesc[-1] == ' ' &&
1347: (stesc == start + 1 || stesc[-2] != '\\'))
1348: stesc--;
1349: *stesc = '\0';
1350: return ROFF_CONT;
1351: }
1352:
1.94 kristaps 1353: /*
1.355 schwarze 1354: * In the current line, expand escape sequences that produce parsable
1355: * input text. Also check the syntax of the remaining escape sequences,
1356: * which typically produce output glyphs or change formatter state.
1.154 kristaps 1357: */
1.340 schwarze 1358: static int
1.388 schwarze 1359: roff_expand(struct roff *r, struct buf *buf, int ln, int pos, char ec)
1.94 kristaps 1360: {
1.388 schwarze 1361: char ubuf[24]; /* buffer to print a number */
1362: struct mctx *ctx; /* current macro call context */
1363: const char *res; /* the string to be pasted */
1364: const char *src; /* source for copying */
1365: char *dst; /* destination for copying */
1.399 schwarze 1366: enum mandoc_esc subtype; /* return value from roff_escape */
1.388 schwarze 1367: int iesc; /* index of leading escape char */
1368: int inam; /* index of the escape name */
1369: int iarg; /* index beginning the argument */
1370: int iendarg; /* index right after the argument */
1371: int iend; /* index right after the sequence */
1.393 schwarze 1372: int isrc, idst; /* to reduce \\ and \. in names */
1.388 schwarze 1373: int deftype; /* type of definition to paste */
1374: int argi; /* macro argument index */
1375: int quote_args; /* true for \\$@, false for \\$* */
1376: int asz; /* length of the replacement */
1377: int rsz; /* length of the rest of the string */
1378: int npos; /* position in numeric expression */
1.181 schwarze 1379: int expand_count; /* to avoid infinite loops */
1.303 schwarze 1380:
1.170 schwarze 1381: expand_count = 0;
1.388 schwarze 1382: while (buf->buf[pos] != '\0') {
1.170 schwarze 1383:
1.388 schwarze 1384: /*
1385: * Skip plain ASCII characters.
1386: * If we have a non-standard escape character,
1387: * escape literal backslashes because all processing in
1388: * subsequent functions uses the standard escaping rules.
1389: */
1.205 schwarze 1390:
1.388 schwarze 1391: if (buf->buf[pos] != ec) {
1.397 schwarze 1392: if (buf->buf[pos] == '\\') {
1.388 schwarze 1393: roff_expand_patch(buf, pos, "\\e", pos + 1);
1394: pos++;
1.303 schwarze 1395: }
1.388 schwarze 1396: pos++;
1.205 schwarze 1397: continue;
1.303 schwarze 1398: }
1.205 schwarze 1399:
1.388 schwarze 1400: /*
1401: * Parse escape sequences,
1402: * issue diagnostic messages when appropriate,
1403: * and skip sequences that do not need expansion.
1404: * If we have a non-standard escape character, translate
1405: * it to backslashes and translate backslashes to \e.
1406: */
1.205 schwarze 1407:
1.392 schwarze 1408: if (roff_escape(buf->buf, ln, pos, &iesc, &inam,
1409: &iarg, &iendarg, &iend) != ESCAPE_EXPAND) {
1.388 schwarze 1410: while (pos < iend) {
1411: if (buf->buf[pos] == ec) {
1412: buf->buf[pos] = '\\';
1413: if (pos + 1 < iend)
1414: pos++;
1415: } else if (buf->buf[pos] == '\\') {
1416: roff_expand_patch(buf,
1417: pos, "\\e", pos + 1);
1418: pos++;
1419: iend++;
1420: }
1421: pos++;
1.352 schwarze 1422: }
1.205 schwarze 1423: continue;
1.152 kristaps 1424: }
1.388 schwarze 1425:
1.393 schwarze 1426: /* Reduce \\ and \. in names. */
1427:
1428: if (buf->buf[inam] == '*' || buf->buf[inam] == 'n') {
1429: isrc = idst = iarg;
1430: while (isrc < iendarg) {
1431: if (isrc + 1 < iendarg &&
1432: buf->buf[isrc] == '\\' &&
1433: (buf->buf[isrc + 1] == '\\' ||
1434: buf->buf[isrc + 1] == '.'))
1435: isrc++;
1436: buf->buf[idst++] = buf->buf[isrc++];
1437: }
1438: iendarg -= isrc - idst;
1439: }
1440:
1.388 schwarze 1441: /* Handle expansion. */
1442:
1443: res = NULL;
1444: switch (buf->buf[inam]) {
1445: case '*':
1446: if (iendarg == iarg)
1.206 schwarze 1447: break;
1.388 schwarze 1448: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1449: if ((res = roff_getstrn(r, buf->buf + iarg,
1450: iendarg - iarg, &deftype)) != NULL)
1.206 schwarze 1451: break;
1.94 kristaps 1452:
1.388 schwarze 1453: /*
1.396 schwarze 1454: * If not overridden,
1.388 schwarze 1455: * let \*(.T through to the formatters.
1456: */
1.94 kristaps 1457:
1.388 schwarze 1458: if (iendarg - iarg == 2 &&
1459: buf->buf[iarg] == '.' &&
1460: buf->buf[iarg + 1] == 'T') {
1461: roff_setstrn(&r->strtab, ".T", 2, NULL, 0, 0);
1462: pos = iend;
1.253 schwarze 1463: continue;
1464: }
1.94 kristaps 1465:
1.388 schwarze 1466: mandoc_msg(MANDOCERR_STR_UNDEF, ln, iesc,
1467: "%.*s", iendarg - iarg, buf->buf + iarg);
1468: break;
1.108 schwarze 1469:
1.339 schwarze 1470: case '$':
1471: if (r->mstackpos < 0) {
1.388 schwarze 1472: mandoc_msg(MANDOCERR_ARG_UNDEF, ln, iesc,
1473: "%.*s", iend - iesc, buf->buf + iesc);
1.339 schwarze 1474: break;
1475: }
1476: ctx = r->mstack + r->mstackpos;
1.388 schwarze 1477: argi = buf->buf[iarg] - '1';
1478: if (argi >= 0 && argi <= 8) {
1479: if (argi < ctx->argc)
1480: res = ctx->argv[argi];
1.339 schwarze 1481: break;
1482: }
1.388 schwarze 1483: if (buf->buf[iarg] == '*')
1.339 schwarze 1484: quote_args = 0;
1.388 schwarze 1485: else if (buf->buf[iarg] == '@')
1.339 schwarze 1486: quote_args = 1;
1487: else {
1.388 schwarze 1488: mandoc_msg(MANDOCERR_ARG_NONUM, ln, iesc,
1489: "%.*s", iend - iesc, buf->buf + iesc);
1.339 schwarze 1490: break;
1491: }
1492: asz = 0;
1.388 schwarze 1493: for (argi = 0; argi < ctx->argc; argi++) {
1494: if (argi)
1.339 schwarze 1495: asz++; /* blank */
1496: if (quote_args)
1497: asz += 2; /* quotes */
1.388 schwarze 1498: asz += strlen(ctx->argv[argi]);
1.339 schwarze 1499: }
1.388 schwarze 1500: if (asz != iend - iesc) {
1501: rsz = buf->sz - iend;
1502: if (asz < iend - iesc)
1503: memmove(buf->buf + iesc + asz,
1504: buf->buf + iend, rsz);
1505: buf->sz = iesc + asz + rsz;
1506: buf->buf = mandoc_realloc(buf->buf, buf->sz);
1507: if (asz > iend - iesc)
1508: memmove(buf->buf + iesc + asz,
1509: buf->buf + iend, rsz);
1.339 schwarze 1510: }
1.388 schwarze 1511: dst = buf->buf + iesc;
1512: for (argi = 0; argi < ctx->argc; argi++) {
1513: if (argi)
1514: *dst++ = ' ';
1.339 schwarze 1515: if (quote_args)
1.388 schwarze 1516: *dst++ = '"';
1517: src = ctx->argv[argi];
1518: while (*src != '\0')
1519: *dst++ = *src++;
1.339 schwarze 1520: if (quote_args)
1.388 schwarze 1521: *dst++ = '"';
1.339 schwarze 1522: }
1523: continue;
1.391 schwarze 1524: case 'A':
1525: ubuf[0] = iendarg > iarg ? '1' : '0';
1526: ubuf[1] = '\0';
1527: res = ubuf;
1528: break;
1.207 schwarze 1529: case 'B':
1.206 schwarze 1530: npos = 0;
1.388 schwarze 1531: ubuf[0] = iendarg > iarg && iend > iendarg &&
1532: roff_evalnum(r, ln, buf->buf + iarg, &npos,
1533: NULL, ROFFNUM_SCALE) &&
1534: npos == iendarg - iarg ? '1' : '0';
1.206 schwarze 1535: ubuf[1] = '\0';
1.388 schwarze 1536: res = ubuf;
1.206 schwarze 1537: break;
1.389 schwarze 1538: case 'V':
1539: mandoc_msg(MANDOCERR_UNSUPP, ln, iesc,
1540: "%.*s", iend - iesc, buf->buf + iesc);
1541: roff_expand_patch(buf, iendarg, "}", iend);
1542: roff_expand_patch(buf, iesc, "${", iarg);
1543: continue;
1.390 schwarze 1544: case 'g':
1545: break;
1.207 schwarze 1546: case 'n':
1.388 schwarze 1547: if (iendarg > iarg)
1.218 schwarze 1548: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.388 schwarze 1549: roff_getregn(r, buf->buf + iarg,
1550: iendarg - iarg, buf->buf[inam + 1]));
1.218 schwarze 1551: else
1552: ubuf[0] = '\0';
1.388 schwarze 1553: res = ubuf;
1.206 schwarze 1554: break;
1.207 schwarze 1555: case 'w':
1.399 schwarze 1556: rsz = 0;
1557: subtype = ESCAPE_UNDEF;
1558: while (iarg < iendarg) {
1559: asz = subtype == ESCAPE_SKIPCHAR ? 0 : 1;
1560: if (buf->buf[iarg] != '\\') {
1561: rsz += asz;
1562: iarg++;
1563: continue;
1564: }
1565: switch ((subtype = roff_escape(buf->buf, 0,
1566: iarg, NULL, NULL, NULL, NULL, &iarg))) {
1567: case ESCAPE_SPECIAL:
1568: case ESCAPE_NUMBERED:
1569: case ESCAPE_UNICODE:
1570: case ESCAPE_OVERSTRIKE:
1571: case ESCAPE_UNDEF:
1572: break;
1573: case ESCAPE_DEVICE:
1574: asz *= 8;
1575: break;
1576: case ESCAPE_EXPAND:
1577: abort();
1578: default:
1579: continue;
1580: }
1581: rsz += asz;
1582: }
1583: (void)snprintf(ubuf, sizeof(ubuf), "%d", rsz * 24);
1.388 schwarze 1584: res = ubuf;
1585: break;
1586: default:
1.206 schwarze 1587: break;
1588: }
1.388 schwarze 1589: if (res == NULL)
1.142 kristaps 1590: res = "";
1.388 schwarze 1591: if (++expand_count > EXPAND_LIMIT ||
1592: buf->sz + strlen(res) > SHRT_MAX) {
1593: mandoc_msg(MANDOCERR_ROFFLOOP, ln, iesc, NULL);
1.277 schwarze 1594: return ROFF_IGN;
1.94 kristaps 1595: }
1.388 schwarze 1596: roff_expand_patch(buf, iesc, res, iend);
1597: }
1598: return ROFF_CONT;
1599: }
1.94 kristaps 1600:
1.388 schwarze 1601: /*
1602: * Replace the substring from the start position (inclusive)
1603: * to end position (exclusive) with the repl(acement) string.
1604: */
1605: static void
1606: roff_expand_patch(struct buf *buf, int start, const char *repl, int end)
1607: {
1608: char *nbuf;
1.108 schwarze 1609:
1.389 schwarze 1610: buf->sz = mandoc_asprintf(&nbuf, "%.*s%s%s", start, buf->buf,
1611: repl, buf->buf + end) + 1;
1.388 schwarze 1612: free(buf->buf);
1613: buf->buf = nbuf;
1.154 kristaps 1614: }
1.353 schwarze 1615:
1616: /*
1617: * Parse a quoted or unquoted roff-style request or macro argument.
1618: * Return a pointer to the parsed argument, which is either the original
1619: * pointer or advanced by one byte in case the argument is quoted.
1620: * NUL-terminate the argument in place.
1621: * Collapse pairs of quotes inside quoted arguments.
1622: * Advance the argument pointer to the next argument,
1623: * or to the NUL byte terminating the argument line.
1624: */
1625: char *
1.355 schwarze 1626: roff_getarg(struct roff *r, char **cpp, int ln, int *pos)
1.353 schwarze 1627: {
1.355 schwarze 1628: struct buf buf;
1.366 schwarze 1629: char *cp, *start;
1.355 schwarze 1630: int newesc, pairs, quoted, white;
1.353 schwarze 1631:
1632: /* Quoting can only start with a new word. */
1633: start = *cpp;
1634: quoted = 0;
1635: if ('"' == *start) {
1636: quoted = 1;
1637: start++;
1638: }
1639:
1.355 schwarze 1640: newesc = pairs = white = 0;
1.353 schwarze 1641: for (cp = start; '\0' != *cp; cp++) {
1642:
1643: /*
1644: * Move the following text left
1645: * after quoted quotes and after "\\" and "\t".
1646: */
1647: if (pairs)
1648: cp[-pairs] = cp[0];
1649:
1650: if ('\\' == cp[0]) {
1651: /*
1652: * In copy mode, translate double to single
1653: * backslashes and backslash-t to literal tabs.
1654: */
1655: switch (cp[1]) {
1656: case 'a':
1657: case 't':
1.354 schwarze 1658: cp[-pairs] = '\t';
1.355 schwarze 1659: pairs++;
1660: cp++;
1661: break;
1.353 schwarze 1662: case '\\':
1.397 schwarze 1663: cp[-pairs] = '\\';
1.355 schwarze 1664: newesc = 1;
1.353 schwarze 1665: pairs++;
1666: cp++;
1667: break;
1668: case ' ':
1669: /* Skip escaped blanks. */
1670: if (0 == quoted)
1671: cp++;
1672: break;
1673: default:
1674: break;
1675: }
1676: } else if (0 == quoted) {
1677: if (' ' == cp[0]) {
1678: /* Unescaped blanks end unquoted args. */
1679: white = 1;
1680: break;
1681: }
1682: } else if ('"' == cp[0]) {
1683: if ('"' == cp[1]) {
1684: /* Quoted quotes collapse. */
1685: pairs++;
1686: cp++;
1687: } else {
1688: /* Unquoted quotes end quoted args. */
1689: quoted = 2;
1690: break;
1691: }
1692: }
1693: }
1694:
1695: /* Quoted argument without a closing quote. */
1696: if (1 == quoted)
1697: mandoc_msg(MANDOCERR_ARG_QUOTE, ln, *pos, NULL);
1698:
1699: /* NUL-terminate this argument and move to the next one. */
1700: if (pairs)
1701: cp[-pairs] = '\0';
1702: if ('\0' != *cp) {
1703: *cp++ = '\0';
1704: while (' ' == *cp)
1705: cp++;
1706: }
1707: *pos += (int)(cp - start) + (quoted ? 1 : 0);
1708: *cpp = cp;
1709:
1710: if ('\0' == *cp && (white || ' ' == cp[-1]))
1711: mandoc_msg(MANDOCERR_SPACE_EOL, ln, *pos, NULL);
1712:
1.355 schwarze 1713: start = mandoc_strdup(start);
1714: if (newesc == 0)
1715: return start;
1716:
1717: buf.buf = start;
1718: buf.sz = strlen(start) + 1;
1719: buf.next = NULL;
1.398 schwarze 1720: if (roff_expand(r, &buf, ln, 0, '\\') == ROFF_IGN) {
1.355 schwarze 1721: free(buf.buf);
1722: buf.buf = mandoc_strdup("");
1723: }
1724: return buf.buf;
1.353 schwarze 1725: }
1726:
1.154 kristaps 1727:
1728: /*
1.275 schwarze 1729: * Process text streams.
1.154 kristaps 1730: */
1.340 schwarze 1731: static int
1.305 schwarze 1732: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.154 kristaps 1733: {
1734: size_t sz;
1735: const char *start;
1.178 schwarze 1736: char *p;
1737: int isz;
1.154 kristaps 1738: enum mandoc_esc esc;
1739:
1.275 schwarze 1740: /* Spring the input line trap. */
1741:
1742: if (roffit_lines == 1) {
1743: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1744: free(buf->buf);
1745: buf->buf = p;
1746: buf->sz = isz + 1;
1747: *offs = 0;
1748: free(roffit_macro);
1749: roffit_lines = 0;
1.277 schwarze 1750: return ROFF_REPARSE;
1.275 schwarze 1751: } else if (roffit_lines > 1)
1752: --roffit_lines;
1753:
1.305 schwarze 1754: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1755: if (roffce_lines < 1) {
1756: r->man->last = roffce_node;
1757: r->man->next = ROFF_NEXT_SIBLING;
1758: roffce_lines = 0;
1759: roffce_node = NULL;
1760: } else
1761: roffce_lines--;
1762: }
1763:
1.275 schwarze 1764: /* Convert all breakable hyphens into ASCII_HYPH. */
1765:
1.238 schwarze 1766: start = p = buf->buf + pos;
1.154 kristaps 1767:
1.238 schwarze 1768: while (*p != '\0') {
1.154 kristaps 1769: sz = strcspn(p, "-\\");
1770: p += sz;
1771:
1.238 schwarze 1772: if (*p == '\0')
1.159 kristaps 1773: break;
1774:
1.238 schwarze 1775: if (*p == '\\') {
1.154 kristaps 1776: /* Skip over escapes. */
1777: p++;
1.189 schwarze 1778: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.238 schwarze 1779: if (esc == ESCAPE_ERROR)
1.154 kristaps 1780: break;
1.264 schwarze 1781: while (*p == '-')
1782: p++;
1.155 kristaps 1783: continue;
1.159 kristaps 1784: } else if (p == start) {
1.158 kristaps 1785: p++;
1.155 kristaps 1786: continue;
1.158 kristaps 1787: }
1.155 kristaps 1788:
1.171 schwarze 1789: if (isalpha((unsigned char)p[-1]) &&
1790: isalpha((unsigned char)p[1]))
1.155 kristaps 1791: *p = ASCII_HYPH;
1792: p++;
1.94 kristaps 1793: }
1.277 schwarze 1794: return ROFF_CONT;
1.94 kristaps 1795: }
1796:
1.340 schwarze 1797: int
1.377 schwarze 1798: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs, size_t len)
1.67 kristaps 1799: {
1.294 schwarze 1800: enum roff_tok t;
1.340 schwarze 1801: int e;
1.238 schwarze 1802: int pos; /* parse point */
1.243 schwarze 1803: int spos; /* saved parse point for messages */
1.238 schwarze 1804: int ppos; /* original offset in buf->buf */
1805: int ctl; /* macro line (boolean) */
1806:
1807: ppos = pos = *offs;
1.377 schwarze 1808:
1809: if (len > 80 && r->tbl == NULL && r->eqn == NULL &&
1810: (r->man->flags & ROFF_NOFILL) == 0 &&
1811: strchr(" .\\", buf->buf[pos]) == NULL &&
1812: buf->buf[pos] != r->control &&
1813: strcspn(buf->buf, " ") < 80)
1814: mandoc_msg(MANDOCERR_TEXT_LONG, ln, (int)len - 1,
1815: "%.20s...", buf->buf + pos);
1.79 kristaps 1816:
1.230 schwarze 1817: /* Handle in-line equation delimiters. */
1818:
1.236 schwarze 1819: if (r->tbl == NULL &&
1820: r->last_eqn != NULL && r->last_eqn->delim &&
1.230 schwarze 1821: (r->eqn == NULL || r->eqn_inline)) {
1.238 schwarze 1822: e = roff_eqndelim(r, buf, pos);
1.230 schwarze 1823: if (e == ROFF_REPARSE)
1.277 schwarze 1824: return e;
1.230 schwarze 1825: assert(e == ROFF_CONT);
1826: }
1827:
1.387 schwarze 1828: /* Handle comments and escape sequences. */
1829:
1830: e = roff_parse_comment(r, buf, ln, pos, r->escape);
1831: if ((e & ROFF_MASK) == ROFF_IGN)
1832: return e;
1833: assert(e == ROFF_CONT);
1.94 kristaps 1834:
1.355 schwarze 1835: e = roff_expand(r, buf, ln, pos, r->escape);
1.340 schwarze 1836: if ((e & ROFF_MASK) == ROFF_IGN)
1.277 schwarze 1837: return e;
1.238 schwarze 1838: assert(e == ROFF_CONT);
1.94 kristaps 1839:
1.238 schwarze 1840: ctl = roff_getcontrol(r, buf->buf, &pos);
1.130 kristaps 1841:
1.94 kristaps 1842: /*
1.79 kristaps 1843: * First, if a scope is open and we're not a macro, pass the
1.252 schwarze 1844: * text through the macro's filter.
1845: * Equations process all content themselves.
1846: * Tables process almost all content themselves, but we want
1847: * to warn about macros before passing it there.
1.79 kristaps 1848: */
1.74 kristaps 1849:
1.252 schwarze 1850: if (r->last != NULL && ! ctl) {
1.78 kristaps 1851: t = r->last->tok;
1.238 schwarze 1852: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.340 schwarze 1853: if ((e & ROFF_MASK) == ROFF_IGN)
1.277 schwarze 1854: return e;
1.340 schwarze 1855: e &= ~ROFF_MASK;
1856: } else
1857: e = ROFF_IGN;
1.319 schwarze 1858: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1859: eqn_read(r->eqn, buf->buf + ppos);
1.340 schwarze 1860: return e;
1.319 schwarze 1861: }
1.321 schwarze 1862: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1863: tbl_read(r->tbl, ln, buf->buf, ppos);
1.346 schwarze 1864: roff_addtbl(r->man, ln, r->tbl);
1.340 schwarze 1865: return e;
1.321 schwarze 1866: }
1.367 schwarze 1867: if ( ! ctl) {
1868: r->options &= ~MPARSE_COMMENT;
1.340 schwarze 1869: return roff_parsetext(r, buf, pos, offs) | e;
1.367 schwarze 1870: }
1.228 schwarze 1871:
1872: /* Skip empty request lines. */
1873:
1.238 schwarze 1874: if (buf->buf[pos] == '"') {
1.350 schwarze 1875: mandoc_msg(MANDOCERR_COMMENT_BAD, ln, pos, NULL);
1.277 schwarze 1876: return ROFF_IGN;
1.238 schwarze 1877: } else if (buf->buf[pos] == '\0')
1.277 schwarze 1878: return ROFF_IGN;
1.67 kristaps 1879:
1.79 kristaps 1880: /*
1881: * If a scope is open, go to the child handler for that macro,
1882: * as it may want to preprocess before doing anything with it.
1883: */
1.78 kristaps 1884:
1.79 kristaps 1885: if (r->last) {
1886: t = r->last->tok;
1.277 schwarze 1887: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1888: }
1.78 kristaps 1889:
1.367 schwarze 1890: r->options &= ~MPARSE_COMMENT;
1.243 schwarze 1891: spos = pos;
1892: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.386 schwarze 1893: return roff_req_or_macro(r, t, buf, ln, spos, pos, offs);
1894: }
1895:
1896: /*
1897: * Handle a new request or macro.
1898: * May be called outside any scope or from inside a conditional scope.
1899: */
1900: static int
1901: roff_req_or_macro(ROFF_ARGS) {
1.243 schwarze 1902:
1.386 schwarze 1903: /* For now, tables ignore most macros and some request. */
1.243 schwarze 1904:
1.386 schwarze 1905: if (r->tbl != NULL && (tok == TOKEN_NONE || tok == ROFF_TS ||
1906: tok == ROFF_br || tok == ROFF_ce || tok == ROFF_rj ||
1907: tok == ROFF_sp)) {
1.350 schwarze 1908: mandoc_msg(MANDOCERR_TBLMACRO,
1.386 schwarze 1909: ln, ppos, "%s", buf->buf + ppos);
1910: if (tok != TOKEN_NONE)
1.277 schwarze 1911: return ROFF_IGN;
1.257 schwarze 1912: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1913: pos++;
1.291 schwarze 1914: while (buf->buf[pos] == ' ')
1.257 schwarze 1915: pos++;
1.321 schwarze 1916: tbl_read(r->tbl, ln, buf->buf, pos);
1.346 schwarze 1917: roff_addtbl(r->man, ln, r->tbl);
1.321 schwarze 1918: return ROFF_IGN;
1.243 schwarze 1919: }
1920:
1.305 schwarze 1921: /* For now, let high level macros abort .ce mode. */
1922:
1.386 schwarze 1923: if (roffce_node != NULL &&
1924: (tok == TOKEN_NONE || tok == ROFF_Dd || tok == ROFF_EQ ||
1925: tok == ROFF_TH || tok == ROFF_TS)) {
1.305 schwarze 1926: r->man->last = roffce_node;
1927: r->man->next = ROFF_NEXT_SIBLING;
1928: roffce_lines = 0;
1929: roffce_node = NULL;
1930: }
1931:
1.79 kristaps 1932: /*
1.243 schwarze 1933: * This is neither a roff request nor a user-defined macro.
1934: * Let the standard macro set parsers handle it.
1.79 kristaps 1935: */
1.67 kristaps 1936:
1.386 schwarze 1937: if (tok == TOKEN_NONE)
1.277 schwarze 1938: return ROFF_CONT;
1.243 schwarze 1939:
1.386 schwarze 1940: /* Execute a roff request or a user-defined macro. */
1.67 kristaps 1941:
1.386 schwarze 1942: return (*roffs[tok].proc)(r, tok, buf, ln, ppos, pos, offs);
1.74 kristaps 1943: }
1944:
1.339 schwarze 1945: /*
1946: * Internal interface function to tell the roff parser that execution
1947: * of the current macro ended. This is required because macro
1948: * definitions usually do not end with a .return request.
1949: */
1950: void
1951: roff_userret(struct roff *r)
1952: {
1953: struct mctx *ctx;
1954: int i;
1955:
1956: assert(r->mstackpos >= 0);
1957: ctx = r->mstack + r->mstackpos;
1958: for (i = 0; i < ctx->argc; i++)
1959: free(ctx->argv[i]);
1960: ctx->argc = 0;
1961: r->mstackpos--;
1962: }
1963:
1.117 kristaps 1964: void
1.74 kristaps 1965: roff_endparse(struct roff *r)
1966: {
1.321 schwarze 1967: if (r->last != NULL)
1.350 schwarze 1968: mandoc_msg(MANDOCERR_BLK_NOEND, r->last->line,
1969: r->last->col, "%s", roff_name[r->last->tok]);
1.117 kristaps 1970:
1.321 schwarze 1971: if (r->eqn != NULL) {
1.350 schwarze 1972: mandoc_msg(MANDOCERR_BLK_NOEND,
1.319 schwarze 1973: r->eqn->node->line, r->eqn->node->pos, "EQ");
1974: eqn_parse(r->eqn);
1975: r->eqn = NULL;
1.125 kristaps 1976: }
1977:
1.321 schwarze 1978: if (r->tbl != NULL) {
1.346 schwarze 1979: tbl_end(r->tbl, 1);
1.321 schwarze 1980: r->tbl = NULL;
1.117 kristaps 1981: }
1.67 kristaps 1982: }
1983:
1984: /*
1.386 schwarze 1985: * Parse the request or macro name at buf[*pos].
1986: * Return ROFF_RENAMED, ROFF_USERDEF, or a ROFF_* token value.
1987: * For empty, undefined, mdoc(7), and man(7) macros, return TOKEN_NONE.
1988: * As a side effect, set r->current_string to the definition or to NULL.
1.67 kristaps 1989: */
1.294 schwarze 1990: static enum roff_tok
1.214 schwarze 1991: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.67 kristaps 1992: {
1.214 schwarze 1993: char *cp;
1.106 kristaps 1994: const char *mac;
1995: size_t maclen;
1.315 schwarze 1996: int deftype;
1.294 schwarze 1997: enum roff_tok t;
1.67 kristaps 1998:
1.214 schwarze 1999: cp = buf + *pos;
2000:
2001: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.294 schwarze 2002: return TOKEN_NONE;
1.67 kristaps 2003:
1.214 schwarze 2004: mac = cp;
2005: maclen = roff_getname(r, &cp, ln, ppos);
1.67 kristaps 2006:
1.315 schwarze 2007: deftype = ROFFDEF_USER | ROFFDEF_REN;
2008: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
2009: switch (deftype) {
2010: case ROFFDEF_USER:
2011: t = ROFF_USERDEF;
2012: break;
2013: case ROFFDEF_REN:
2014: t = ROFF_RENAMED;
2015: break;
2016: default:
2017: t = roffhash_find(r->reqtab, mac, maclen);
2018: break;
2019: }
1.294 schwarze 2020: if (t != TOKEN_NONE)
1.214 schwarze 2021: *pos = cp - buf;
1.325 schwarze 2022: else if (deftype == ROFFDEF_UNDEF) {
2023: /* Using an undefined macro defines it to be empty. */
2024: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
2025: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
2026: }
1.277 schwarze 2027: return t;
1.67 kristaps 2028: }
2029:
1.266 schwarze 2030: /* --- handling of request blocks ----------------------------------------- */
2031:
1.375 schwarze 2032: /*
2033: * Close a macro definition block or an "ignore" block.
2034: */
1.340 schwarze 2035: static int
1.76 kristaps 2036: roff_cblock(ROFF_ARGS)
1.67 kristaps 2037: {
1.375 schwarze 2038: int rr;
1.79 kristaps 2039:
1.238 schwarze 2040: if (r->last == NULL) {
1.350 schwarze 2041: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.277 schwarze 2042: return ROFF_IGN;
1.76 kristaps 2043: }
1.67 kristaps 2044:
1.81 kristaps 2045: switch (r->last->tok) {
1.207 schwarze 2046: case ROFF_am:
2047: case ROFF_ami:
2048: case ROFF_de:
2049: case ROFF_dei:
2050: case ROFF_ig:
1.81 kristaps 2051: break;
1.375 schwarze 2052: case ROFF_am1:
2053: case ROFF_de1:
2054: /* Remapped in roff_block(). */
2055: abort();
1.81 kristaps 2056: default:
1.350 schwarze 2057: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.277 schwarze 2058: return ROFF_IGN;
1.76 kristaps 2059: }
1.67 kristaps 2060:
1.375 schwarze 2061: roffnode_pop(r);
2062: roffnode_cleanscope(r);
2063:
2064: /*
2065: * If a conditional block with braces is still open,
2066: * check for "\}" block end markers.
2067: */
2068:
2069: if (r->last != NULL && r->last->endspan < 0) {
2070: rr = 1; /* If arguments follow "\}", warn about them. */
2071: roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
2072: }
2073:
1.238 schwarze 2074: if (buf->buf[pos] != '\0')
1.350 schwarze 2075: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.238 schwarze 2076: ".. %s", buf->buf + pos);
1.71 kristaps 2077:
1.277 schwarze 2078: return ROFF_IGN;
1.67 kristaps 2079: }
2080:
1.364 schwarze 2081: /*
2082: * Pop all nodes ending at the end of the current input line.
2083: * Return the number of loops ended.
2084: */
1.340 schwarze 2085: static int
1.76 kristaps 2086: roffnode_cleanscope(struct roff *r)
1.67 kristaps 2087: {
1.340 schwarze 2088: int inloop;
1.67 kristaps 2089:
1.340 schwarze 2090: inloop = 0;
1.375 schwarze 2091: while (r->last != NULL && r->last->endspan > 0) {
1.173 schwarze 2092: if (--r->last->endspan != 0)
1.76 kristaps 2093: break;
1.340 schwarze 2094: inloop += roffnode_pop(r);
1.76 kristaps 2095: }
1.340 schwarze 2096: return inloop;
1.67 kristaps 2097: }
2098:
1.364 schwarze 2099: /*
1.375 schwarze 2100: * Handle the closing "\}" of a conditional block.
1.364 schwarze 2101: * Apart from generating warnings, this only pops nodes.
2102: * Return the number of loops ended.
2103: */
1.340 schwarze 2104: static int
1.195 schwarze 2105: roff_ccond(struct roff *r, int ln, int ppos)
1.74 kristaps 2106: {
1.76 kristaps 2107: if (NULL == r->last) {
1.350 schwarze 2108: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 2109: return 0;
1.76 kristaps 2110: }
2111:
1.82 kristaps 2112: switch (r->last->tok) {
1.207 schwarze 2113: case ROFF_el:
2114: case ROFF_ie:
2115: case ROFF_if:
1.340 schwarze 2116: case ROFF_while:
1.82 kristaps 2117: break;
2118: default:
1.350 schwarze 2119: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 2120: return 0;
1.75 kristaps 2121: }
2122:
1.76 kristaps 2123: if (r->last->endspan > -1) {
1.350 schwarze 2124: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 2125: return 0;
1.76 kristaps 2126: }
2127:
1.340 schwarze 2128: return roffnode_pop(r) + roffnode_cleanscope(r);
1.76 kristaps 2129: }
2130:
1.340 schwarze 2131: static int
1.80 kristaps 2132: roff_block(ROFF_ARGS)
1.76 kristaps 2133: {
1.315 schwarze 2134: const char *name, *value;
2135: char *call, *cp, *iname, *rname;
2136: size_t csz, namesz, rsz;
2137: int deftype;
1.106 kristaps 2138:
1.220 schwarze 2139: /* Ignore groff compatibility mode for now. */
1.76 kristaps 2140:
1.238 schwarze 2141: if (tok == ROFF_de1)
1.220 schwarze 2142: tok = ROFF_de;
1.251 schwarze 2143: else if (tok == ROFF_dei1)
2144: tok = ROFF_dei;
1.238 schwarze 2145: else if (tok == ROFF_am1)
1.220 schwarze 2146: tok = ROFF_am;
1.251 schwarze 2147: else if (tok == ROFF_ami1)
2148: tok = ROFF_ami;
1.220 schwarze 2149:
2150: /* Parse the macro name argument. */
2151:
1.238 schwarze 2152: cp = buf->buf + pos;
2153: if (tok == ROFF_ig) {
1.220 schwarze 2154: iname = NULL;
2155: namesz = 0;
2156: } else {
2157: iname = cp;
2158: namesz = roff_getname(r, &cp, ln, ppos);
2159: iname[namesz] = '\0';
2160: }
1.107 kristaps 2161:
1.220 schwarze 2162: /* Resolve the macro name argument if it is indirect. */
1.107 kristaps 2163:
1.238 schwarze 2164: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 2165: deftype = ROFFDEF_USER;
2166: name = roff_getstrn(r, iname, namesz, &deftype);
2167: if (name == NULL) {
1.350 schwarze 2168: mandoc_msg(MANDOCERR_STR_UNDEF,
2169: ln, (int)(iname - buf->buf),
1.220 schwarze 2170: "%.*s", (int)namesz, iname);
2171: namesz = 0;
2172: } else
2173: namesz = strlen(name);
2174: } else
2175: name = iname;
1.107 kristaps 2176:
1.238 schwarze 2177: if (namesz == 0 && tok != ROFF_ig) {
1.350 schwarze 2178: mandoc_msg(MANDOCERR_REQ_EMPTY,
2179: ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2180: return ROFF_IGN;
1.220 schwarze 2181: }
1.80 kristaps 2182:
1.106 kristaps 2183: roffnode_push(r, tok, name, ln, ppos);
2184:
2185: /*
2186: * At the beginning of a `de' macro, clear the existing string
2187: * with the same name, if there is one. New content will be
1.193 schwarze 2188: * appended from roff_block_text() in multiline mode.
1.106 kristaps 2189: */
1.107 kristaps 2190:
1.311 schwarze 2191: if (tok == ROFF_de || tok == ROFF_dei) {
1.213 schwarze 2192: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.311 schwarze 2193: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.315 schwarze 2194: } else if (tok == ROFF_am || tok == ROFF_ami) {
2195: deftype = ROFFDEF_ANY;
2196: value = roff_getstrn(r, iname, namesz, &deftype);
2197: switch (deftype) { /* Before appending, ... */
2198: case ROFFDEF_PRE: /* copy predefined to user-defined. */
2199: roff_setstrn(&r->strtab, name, namesz,
2200: value, strlen(value), 0);
2201: break;
2202: case ROFFDEF_REN: /* call original standard macro. */
2203: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2204: (int)strlen(value), value);
2205: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2206: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
2207: free(call);
2208: break;
2209: case ROFFDEF_STD: /* rename and call standard macro. */
2210: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
2211: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
2212: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2213: (int)rsz, rname);
2214: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2215: free(call);
2216: free(rname);
2217: break;
2218: default:
2219: break;
2220: }
1.311 schwarze 2221: }
1.76 kristaps 2222:
1.238 schwarze 2223: if (*cp == '\0')
1.277 schwarze 2224: return ROFF_IGN;
1.78 kristaps 2225:
1.220 schwarze 2226: /* Get the custom end marker. */
1.107 kristaps 2227:
1.220 schwarze 2228: iname = cp;
1.213 schwarze 2229: namesz = roff_getname(r, &cp, ln, ppos);
1.220 schwarze 2230:
2231: /* Resolve the end marker if it is indirect. */
2232:
1.238 schwarze 2233: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 2234: deftype = ROFFDEF_USER;
2235: name = roff_getstrn(r, iname, namesz, &deftype);
2236: if (name == NULL) {
1.350 schwarze 2237: mandoc_msg(MANDOCERR_STR_UNDEF,
2238: ln, (int)(iname - buf->buf),
1.220 schwarze 2239: "%.*s", (int)namesz, iname);
2240: namesz = 0;
2241: } else
2242: namesz = strlen(name);
2243: } else
2244: name = iname;
2245:
1.213 schwarze 2246: if (namesz)
2247: r->last->end = mandoc_strndup(name, namesz);
1.78 kristaps 2248:
1.238 schwarze 2249: if (*cp != '\0')
1.350 schwarze 2250: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.295 schwarze 2251: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.74 kristaps 2252:
1.277 schwarze 2253: return ROFF_IGN;
1.78 kristaps 2254: }
2255:
1.340 schwarze 2256: static int
1.80 kristaps 2257: roff_block_sub(ROFF_ARGS)
1.79 kristaps 2258: {
1.294 schwarze 2259: enum roff_tok t;
1.79 kristaps 2260: int i, j;
2261:
2262: /*
1.385 schwarze 2263: * If a custom end marker is a user-defined or predefined macro
2264: * or a request, interpret it.
1.79 kristaps 2265: */
2266:
2267: if (r->last->end) {
1.130 kristaps 2268: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.238 schwarze 2269: if (buf->buf[i] != r->last->end[j])
1.79 kristaps 2270: break;
2271:
1.238 schwarze 2272: if (r->last->end[j] == '\0' &&
2273: (buf->buf[i] == '\0' ||
2274: buf->buf[i] == ' ' ||
2275: buf->buf[i] == '\t')) {
1.79 kristaps 2276: roffnode_pop(r);
2277: roffnode_cleanscope(r);
2278:
1.238 schwarze 2279: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.130 kristaps 2280: i++;
2281:
2282: pos = i;
1.238 schwarze 2283: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.294 schwarze 2284: TOKEN_NONE)
1.277 schwarze 2285: return ROFF_RERUN;
2286: return ROFF_IGN;
1.79 kristaps 2287: }
2288: }
2289:
1.385 schwarze 2290: /* Handle the standard end marker. */
1.79 kristaps 2291:
1.238 schwarze 2292: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.385 schwarze 2293: if (t == ROFF_cblock)
2294: return roff_cblock(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 2295:
1.385 schwarze 2296: /* Not an end marker, so append the line to the block. */
1.79 kristaps 2297:
1.385 schwarze 2298: if (tok != ROFF_ig)
2299: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
2300: return ROFF_IGN;
1.79 kristaps 2301: }
2302:
1.340 schwarze 2303: static int
1.80 kristaps 2304: roff_block_text(ROFF_ARGS)
1.78 kristaps 2305: {
2306:
1.238 schwarze 2307: if (tok != ROFF_ig)
2308: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.106 kristaps 2309:
1.277 schwarze 2310: return ROFF_IGN;
1.78 kristaps 2311: }
2312:
1.375 schwarze 2313: /*
2314: * Check for a closing "\}" and handle it.
2315: * In this function, the final "int *offs" argument is used for
2316: * different purposes than elsewhere:
2317: * Input: *offs == 0: caller wants to discard arguments following \}
2318: * *offs == 1: caller wants to preserve text following \}
2319: * Output: *offs = 0: tell caller to discard input line
2320: * *offs = 1: tell caller to use input line
2321: */
1.340 schwarze 2322: static int
1.375 schwarze 2323: roff_cond_checkend(ROFF_ARGS)
1.82 kristaps 2324: {
1.340 schwarze 2325: char *ep;
2326: int endloop, irc, rr;
1.82 kristaps 2327:
1.340 schwarze 2328: irc = ROFF_IGN;
1.82 kristaps 2329: rr = r->last->rule;
1.340 schwarze 2330: endloop = tok != ROFF_while ? ROFF_IGN :
2331: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2332: if (roffnode_cleanscope(r))
2333: irc |= endloop;
1.144 kristaps 2334:
1.196 schwarze 2335: /*
1.375 schwarze 2336: * If "\}" occurs on a macro line without a preceding macro or
2337: * a text line contains nothing else, drop the line completely.
1.196 schwarze 2338: */
2339:
1.238 schwarze 2340: ep = buf->buf + pos;
1.375 schwarze 2341: if (ep[0] == '\\' && ep[1] == '}' && (ep[2] == '\0' || *offs == 0))
1.198 schwarze 2342: rr = 0;
1.196 schwarze 2343:
1.343 schwarze 2344: /*
1.375 schwarze 2345: * The closing delimiter "\}" rewinds the conditional scope
1.343 schwarze 2346: * but is otherwise ignored when interpreting the line.
2347: */
1.144 kristaps 2348:
1.238 schwarze 2349: while ((ep = strchr(ep, '\\')) != NULL) {
1.318 schwarze 2350: switch (ep[1]) {
2351: case '}':
1.376 schwarze 2352: if (ep[2] == '\0')
2353: ep[0] = '\0';
2354: else if (rr)
1.375 schwarze 2355: ep[1] = '&';
2356: else
2357: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1.340 schwarze 2358: if (roff_ccond(r, ln, ep - buf->buf))
2359: irc |= endloop;
1.318 schwarze 2360: break;
2361: case '\0':
2362: ++ep;
2363: break;
2364: default:
2365: ep += 2;
2366: break;
1.197 schwarze 2367: }
1.177 schwarze 2368: }
1.375 schwarze 2369: *offs = rr;
2370: return irc;
2371: }
1.318 schwarze 2372:
1.375 schwarze 2373: /*
2374: * Parse and process a request or macro line in conditional scope.
2375: */
2376: static int
2377: roff_cond_sub(ROFF_ARGS)
2378: {
2379: struct roffnode *bl;
1.386 schwarze 2380: int irc, rr, spos;
1.375 schwarze 2381: enum roff_tok t;
2382:
2383: rr = 0; /* If arguments follow "\}", skip them. */
2384: irc = roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
1.386 schwarze 2385: spos = pos;
1.368 schwarze 2386: t = roff_parse(r, buf->buf, &pos, ln, ppos);
2387:
1.318 schwarze 2388: /*
1.386 schwarze 2389: * Handle requests and macros if the conditional evaluated
2390: * to true or if they are structurally required.
2391: * The .break request is always handled specially.
1.318 schwarze 2392: */
2393:
1.364 schwarze 2394: if (t == ROFF_break) {
2395: if (irc & ROFF_LOOPMASK)
2396: irc = ROFF_IGN | ROFF_LOOPEXIT;
2397: else if (rr) {
2398: for (bl = r->last; bl != NULL; bl = bl->parent) {
2399: bl->rule = 0;
2400: if (bl->tok == ROFF_while)
2401: break;
2402: }
2403: }
1.386 schwarze 2404: } else if (rr || (t < TOKEN_NONE && roffs[t].flags & ROFFMAC_STRUCT)) {
2405: irc |= roff_req_or_macro(r, t, buf, ln, spos, pos, offs);
1.383 schwarze 2406: if (irc & ROFF_WHILE)
2407: irc &= ~(ROFF_LOOPCONT | ROFF_LOOPEXIT);
1.386 schwarze 2408: }
1.340 schwarze 2409: return irc;
1.82 kristaps 2410: }
2411:
1.375 schwarze 2412: /*
2413: * Parse and process a text line in conditional scope.
2414: */
1.340 schwarze 2415: static int
1.82 kristaps 2416: roff_cond_text(ROFF_ARGS)
1.78 kristaps 2417: {
1.375 schwarze 2418: int irc, rr;
1.343 schwarze 2419:
1.375 schwarze 2420: rr = 1; /* If arguments follow "\}", preserve them. */
2421: irc = roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
1.340 schwarze 2422: if (rr)
2423: irc |= ROFF_CONT;
2424: return irc;
1.74 kristaps 2425: }
2426:
1.266 schwarze 2427: /* --- handling of numeric and conditional expressions -------------------- */
2428:
1.204 schwarze 2429: /*
2430: * Parse a single signed integer number. Stop at the first non-digit.
2431: * If there is at least one digit, return success and advance the
2432: * parse point, else return failure and let the parse point unchanged.
2433: * Ignore overflows, treat them just like the C language.
2434: */
1.184 schwarze 2435: static int
1.261 schwarze 2436: roff_getnum(const char *v, int *pos, int *res, int flags)
1.184 schwarze 2437: {
1.261 schwarze 2438: int myres, scaled, n, p;
1.206 schwarze 2439:
2440: if (NULL == res)
2441: res = &myres;
1.184 schwarze 2442:
2443: p = *pos;
2444: n = v[p] == '-';
1.261 schwarze 2445: if (n || v[p] == '+')
1.184 schwarze 2446: p++;
2447:
1.261 schwarze 2448: if (flags & ROFFNUM_WHITE)
2449: while (isspace((unsigned char)v[p]))
2450: p++;
2451:
1.184 schwarze 2452: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.204 schwarze 2453: *res = 10 * *res + v[p] - '0';
1.184 schwarze 2454: if (p == *pos + n)
2455: return 0;
2456:
2457: if (n)
2458: *res = -*res;
2459:
1.254 schwarze 2460: /* Each number may be followed by one optional scaling unit. */
2461:
2462: switch (v[p]) {
2463: case 'f':
1.261 schwarze 2464: scaled = *res * 65536;
1.254 schwarze 2465: break;
2466: case 'i':
1.261 schwarze 2467: scaled = *res * 240;
1.254 schwarze 2468: break;
2469: case 'c':
1.261 schwarze 2470: scaled = *res * 240 / 2.54;
1.254 schwarze 2471: break;
2472: case 'v':
2473: case 'P':
1.261 schwarze 2474: scaled = *res * 40;
1.254 schwarze 2475: break;
2476: case 'm':
2477: case 'n':
1.261 schwarze 2478: scaled = *res * 24;
1.254 schwarze 2479: break;
2480: case 'p':
1.261 schwarze 2481: scaled = *res * 10 / 3;
1.254 schwarze 2482: break;
2483: case 'u':
1.261 schwarze 2484: scaled = *res;
1.254 schwarze 2485: break;
2486: case 'M':
1.261 schwarze 2487: scaled = *res * 6 / 25;
1.254 schwarze 2488: break;
2489: default:
1.261 schwarze 2490: scaled = *res;
1.254 schwarze 2491: p--;
2492: break;
2493: }
1.261 schwarze 2494: if (flags & ROFFNUM_SCALE)
2495: *res = scaled;
1.254 schwarze 2496:
2497: *pos = p + 1;
1.277 schwarze 2498: return 1;
1.184 schwarze 2499: }
2500:
1.198 schwarze 2501: /*
2502: * Evaluate a string comparison condition.
2503: * The first character is the delimiter.
2504: * Succeed if the string up to its second occurrence
1.396 schwarze 2505: * matches the string up to its third occurrence.
1.198 schwarze 2506: * Advance the cursor after the third occurrence
2507: * or lacking that, to the end of the line.
2508: */
2509: static int
2510: roff_evalstrcond(const char *v, int *pos)
2511: {
2512: const char *s1, *s2, *s3;
2513: int match;
2514:
2515: match = 0;
2516: s1 = v + *pos; /* initial delimiter */
2517: s2 = s1 + 1; /* for scanning the first string */
2518: s3 = strchr(s2, *s1); /* for scanning the second string */
2519:
2520: if (NULL == s3) /* found no middle delimiter */
2521: goto out;
2522:
2523: while ('\0' != *++s3) {
2524: if (*s2 != *s3) { /* mismatch */
2525: s3 = strchr(s3, *s1);
2526: break;
2527: }
2528: if (*s3 == *s1) { /* found the final delimiter */
2529: match = 1;
2530: break;
2531: }
2532: s2++;
2533: }
2534:
2535: out:
2536: if (NULL == s3)
2537: s3 = strchr(s2, '\0');
1.242 schwarze 2538: else if (*s3 != '\0')
1.198 schwarze 2539: s3++;
2540: *pos = s3 - v;
1.277 schwarze 2541: return match;
1.198 schwarze 2542: }
2543:
1.204 schwarze 2544: /*
2545: * Evaluate an optionally negated single character, numerical,
2546: * or string condition.
2547: */
1.198 schwarze 2548: static int
1.271 schwarze 2549: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.88 kristaps 2550: {
1.336 schwarze 2551: const char *start, *end;
2552: char *cp, *name;
2553: size_t sz;
2554: int deftype, len, number, savepos, istrue, wanttrue;
1.88 kristaps 2555:
1.198 schwarze 2556: if ('!' == v[*pos]) {
2557: wanttrue = 0;
2558: (*pos)++;
2559: } else
2560: wanttrue = 1;
2561:
1.88 kristaps 2562: switch (v[*pos]) {
1.240 schwarze 2563: case '\0':
1.277 schwarze 2564: return 0;
1.207 schwarze 2565: case 'n':
2566: case 'o':
1.88 kristaps 2567: (*pos)++;
1.277 schwarze 2568: return wanttrue;
1.207 schwarze 2569: case 'e':
2570: case 't':
1.239 schwarze 2571: case 'v':
1.88 kristaps 2572: (*pos)++;
1.277 schwarze 2573: return !wanttrue;
1.336 schwarze 2574: case 'c':
2575: do {
2576: (*pos)++;
2577: } while (v[*pos] == ' ');
2578:
2579: /*
2580: * Quirk for groff compatibility:
2581: * The horizontal tab is neither available nor unavailable.
2582: */
2583:
2584: if (v[*pos] == '\t') {
2585: (*pos)++;
2586: return 0;
2587: }
2588:
2589: /* Printable ASCII characters are available. */
2590:
2591: if (v[*pos] != '\\') {
2592: (*pos)++;
2593: return wanttrue;
2594: }
2595:
2596: end = v + ++*pos;
2597: switch (mandoc_escape(&end, &start, &len)) {
2598: case ESCAPE_SPECIAL:
2599: istrue = mchars_spec2cp(start, len) != -1;
2600: break;
2601: case ESCAPE_UNICODE:
2602: istrue = 1;
2603: break;
2604: case ESCAPE_NUMBERED:
2605: istrue = mchars_num2char(start, len) != -1;
2606: break;
2607: default:
2608: istrue = !wanttrue;
2609: break;
2610: }
2611: *pos = end - v;
2612: return istrue == wanttrue;
1.310 schwarze 2613: case 'd':
1.271 schwarze 2614: case 'r':
1.310 schwarze 2615: cp = v + *pos + 1;
2616: while (*cp == ' ')
2617: cp++;
2618: name = cp;
2619: sz = roff_getname(r, &cp, ln, cp - v);
1.315 schwarze 2620: if (sz == 0)
2621: istrue = 0;
2622: else if (v[*pos] == 'r')
2623: istrue = roff_hasregn(r, name, sz);
2624: else {
2625: deftype = ROFFDEF_ANY;
2626: roff_getstrn(r, name, sz, &deftype);
2627: istrue = !!deftype;
2628: }
1.363 schwarze 2629: *pos = (name + sz) - v;
1.310 schwarze 2630: return istrue == wanttrue;
1.88 kristaps 2631: default:
2632: break;
2633: }
2634:
1.241 schwarze 2635: savepos = *pos;
1.261 schwarze 2636: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.277 schwarze 2637: return (number > 0) == wanttrue;
1.241 schwarze 2638: else if (*pos == savepos)
1.277 schwarze 2639: return roff_evalstrcond(v, pos) == wanttrue;
1.204 schwarze 2640: else
1.277 schwarze 2641: return 0;
1.88 kristaps 2642: }
2643:
1.340 schwarze 2644: static int
1.103 kristaps 2645: roff_line_ignore(ROFF_ARGS)
1.89 kristaps 2646: {
1.123 schwarze 2647:
1.277 schwarze 2648: return ROFF_IGN;
1.89 kristaps 2649: }
2650:
1.340 schwarze 2651: static int
1.251 schwarze 2652: roff_insec(ROFF_ARGS)
2653: {
2654:
1.350 schwarze 2655: mandoc_msg(MANDOCERR_REQ_INSEC, ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2656: return ROFF_IGN;
1.251 schwarze 2657: }
2658:
1.340 schwarze 2659: static int
1.251 schwarze 2660: roff_unsupp(ROFF_ARGS)
2661: {
2662:
1.350 schwarze 2663: mandoc_msg(MANDOCERR_REQ_UNSUPP, ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2664: return ROFF_IGN;
1.251 schwarze 2665: }
2666:
1.340 schwarze 2667: static int
1.82 kristaps 2668: roff_cond(ROFF_ARGS)
1.74 kristaps 2669: {
1.340 schwarze 2670: int irc;
1.173 schwarze 2671:
2672: roffnode_push(r, tok, NULL, ln, ppos);
1.74 kristaps 2673:
1.207 schwarze 2674: /*
1.134 kristaps 2675: * An `.el' has no conditional body: it will consume the value
2676: * of the current rstack entry set in prior `ie' calls or
1.207 schwarze 2677: * defaults to DENY.
1.134 kristaps 2678: *
2679: * If we're not an `el', however, then evaluate the conditional.
2680: */
1.133 kristaps 2681:
1.238 schwarze 2682: r->last->rule = tok == ROFF_el ?
1.207 schwarze 2683: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.238 schwarze 2684: roff_evalcond(r, ln, buf->buf, &pos);
1.77 kristaps 2685:
1.134 kristaps 2686: /*
2687: * An if-else will put the NEGATION of the current evaluated
2688: * conditional into the stack of rules.
2689: */
2690:
1.238 schwarze 2691: if (tok == ROFF_ie) {
1.223 schwarze 2692: if (r->rstackpos + 1 == r->rstacksz) {
2693: r->rstacksz += 16;
2694: r->rstack = mandoc_reallocarray(r->rstack,
2695: r->rstacksz, sizeof(int));
1.134 kristaps 2696: }
1.198 schwarze 2697: r->rstack[++r->rstackpos] = !r->last->rule;
1.82 kristaps 2698: }
1.88 kristaps 2699:
2700: /* If the parent has false as its rule, then so do we. */
2701:
1.198 schwarze 2702: if (r->last->parent && !r->last->parent->rule)
2703: r->last->rule = 0;
1.88 kristaps 2704:
2705: /*
1.173 schwarze 2706: * Determine scope.
2707: * If there is nothing on the line after the conditional,
2708: * not even whitespace, use next-line scope.
1.340 schwarze 2709: * Except that .while does not support next-line scope.
1.88 kristaps 2710: */
1.74 kristaps 2711:
1.340 schwarze 2712: if (buf->buf[pos] == '\0' && tok != ROFF_while) {
1.173 schwarze 2713: r->last->endspan = 2;
2714: goto out;
2715: }
2716:
1.238 schwarze 2717: while (buf->buf[pos] == ' ')
1.173 schwarze 2718: pos++;
2719:
2720: /* An opening brace requests multiline scope. */
1.75 kristaps 2721:
1.238 schwarze 2722: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.75 kristaps 2723: r->last->endspan = -1;
2724: pos += 2;
1.272 schwarze 2725: while (buf->buf[pos] == ' ')
2726: pos++;
1.173 schwarze 2727: goto out;
1.207 schwarze 2728: }
1.74 kristaps 2729:
1.77 kristaps 2730: /*
1.173 schwarze 2731: * Anything else following the conditional causes
2732: * single-line scope. Warn if the scope contains
2733: * nothing but trailing whitespace.
1.77 kristaps 2734: */
2735:
1.238 schwarze 2736: if (buf->buf[pos] == '\0')
1.350 schwarze 2737: mandoc_msg(MANDOCERR_COND_EMPTY,
2738: ln, ppos, "%s", roff_name[tok]);
1.77 kristaps 2739:
1.173 schwarze 2740: r->last->endspan = 1;
1.74 kristaps 2741:
1.173 schwarze 2742: out:
1.75 kristaps 2743: *offs = pos;
1.340 schwarze 2744: irc = ROFF_RERUN;
2745: if (tok == ROFF_while)
2746: irc |= ROFF_WHILE;
2747: return irc;
1.83 schwarze 2748: }
2749:
1.340 schwarze 2750: static int
1.92 schwarze 2751: roff_ds(ROFF_ARGS)
2752: {
1.212 schwarze 2753: char *string;
2754: const char *name;
2755: size_t namesz;
1.96 kristaps 2756:
1.251 schwarze 2757: /* Ignore groff compatibility mode for now. */
2758:
2759: if (tok == ROFF_ds1)
2760: tok = ROFF_ds;
2761: else if (tok == ROFF_as1)
2762: tok = ROFF_as;
2763:
1.96 kristaps 2764: /*
1.212 schwarze 2765: * The first word is the name of the string.
2766: * If it is empty or terminated by an escape sequence,
2767: * abort the `ds' request without defining anything.
1.96 kristaps 2768: */
1.92 schwarze 2769:
1.238 schwarze 2770: name = string = buf->buf + pos;
2771: if (*name == '\0')
1.277 schwarze 2772: return ROFF_IGN;
1.92 schwarze 2773:
1.212 schwarze 2774: namesz = roff_getname(r, &string, ln, pos);
1.363 schwarze 2775: switch (name[namesz]) {
2776: case '\\':
1.277 schwarze 2777: return ROFF_IGN;
1.363 schwarze 2778: case '\t':
2779: string = buf->buf + pos + namesz;
2780: break;
2781: default:
2782: break;
2783: }
1.212 schwarze 2784:
2785: /* Read past the initial double-quote, if any. */
1.238 schwarze 2786: if (*string == '"')
1.92 schwarze 2787: string++;
2788:
1.96 kristaps 2789: /* The rest is the value. */
1.212 schwarze 2790: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2791: ROFF_as == tok);
1.311 schwarze 2792: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.277 schwarze 2793: return ROFF_IGN;
1.92 schwarze 2794: }
2795:
1.204 schwarze 2796: /*
2797: * Parse a single operator, one or two characters long.
2798: * If the operator is recognized, return success and advance the
2799: * parse point, else return failure and let the parse point unchanged.
2800: */
2801: static int
2802: roff_getop(const char *v, int *pos, char *res)
2803: {
2804:
2805: *res = v[*pos];
2806:
2807: switch (*res) {
1.207 schwarze 2808: case '+':
2809: case '-':
2810: case '*':
2811: case '/':
2812: case '%':
2813: case '&':
2814: case ':':
1.204 schwarze 2815: break;
2816: case '<':
2817: switch (v[*pos + 1]) {
1.207 schwarze 2818: case '=':
1.204 schwarze 2819: *res = 'l';
2820: (*pos)++;
2821: break;
1.207 schwarze 2822: case '>':
1.204 schwarze 2823: *res = '!';
2824: (*pos)++;
2825: break;
1.207 schwarze 2826: case '?':
1.204 schwarze 2827: *res = 'i';
2828: (*pos)++;
2829: break;
2830: default:
2831: break;
2832: }
2833: break;
2834: case '>':
2835: switch (v[*pos + 1]) {
1.207 schwarze 2836: case '=':
1.204 schwarze 2837: *res = 'g';
2838: (*pos)++;
2839: break;
1.207 schwarze 2840: case '?':
1.204 schwarze 2841: *res = 'a';
2842: (*pos)++;
2843: break;
2844: default:
2845: break;
2846: }
2847: break;
2848: case '=':
2849: if ('=' == v[*pos + 1])
2850: (*pos)++;
2851: break;
2852: default:
1.277 schwarze 2853: return 0;
1.204 schwarze 2854: }
2855: (*pos)++;
2856:
1.277 schwarze 2857: return *res;
1.204 schwarze 2858: }
2859:
2860: /*
2861: * Evaluate either a parenthesized numeric expression
2862: * or a single signed integer number.
2863: */
2864: static int
1.235 schwarze 2865: roff_evalpar(struct roff *r, int ln,
1.261 schwarze 2866: const char *v, int *pos, int *res, int flags)
1.204 schwarze 2867: {
2868:
2869: if ('(' != v[*pos])
1.277 schwarze 2870: return roff_getnum(v, pos, res, flags);
1.204 schwarze 2871:
2872: (*pos)++;
1.261 schwarze 2873: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.277 schwarze 2874: return 0;
1.204 schwarze 2875:
1.206 schwarze 2876: /*
2877: * Omission of the closing parenthesis
2878: * is an error in validation mode,
2879: * but ignored in evaluation mode.
2880: */
2881:
1.204 schwarze 2882: if (')' == v[*pos])
2883: (*pos)++;
1.206 schwarze 2884: else if (NULL == res)
1.277 schwarze 2885: return 0;
1.204 schwarze 2886:
1.277 schwarze 2887: return 1;
1.204 schwarze 2888: }
2889:
2890: /*
2891: * Evaluate a complete numeric expression.
2892: * Proceed left to right, there is no concept of precedence.
2893: */
2894: static int
1.235 schwarze 2895: roff_evalnum(struct roff *r, int ln, const char *v,
1.261 schwarze 2896: int *pos, int *res, int flags)
1.204 schwarze 2897: {
2898: int mypos, operand2;
2899: char operator;
2900:
2901: if (NULL == pos) {
2902: mypos = 0;
2903: pos = &mypos;
2904: }
2905:
1.261 schwarze 2906: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2907: while (isspace((unsigned char)v[*pos]))
2908: (*pos)++;
2909:
1.261 schwarze 2910: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.277 schwarze 2911: return 0;
1.204 schwarze 2912:
2913: while (1) {
1.261 schwarze 2914: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2915: while (isspace((unsigned char)v[*pos]))
2916: (*pos)++;
2917:
2918: if ( ! roff_getop(v, pos, &operator))
2919: break;
2920:
1.261 schwarze 2921: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2922: while (isspace((unsigned char)v[*pos]))
2923: (*pos)++;
2924:
1.261 schwarze 2925: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.277 schwarze 2926: return 0;
1.204 schwarze 2927:
1.261 schwarze 2928: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2929: while (isspace((unsigned char)v[*pos]))
2930: (*pos)++;
1.206 schwarze 2931:
2932: if (NULL == res)
2933: continue;
1.204 schwarze 2934:
2935: switch (operator) {
1.207 schwarze 2936: case '+':
1.204 schwarze 2937: *res += operand2;
2938: break;
1.207 schwarze 2939: case '-':
1.204 schwarze 2940: *res -= operand2;
2941: break;
1.207 schwarze 2942: case '*':
1.204 schwarze 2943: *res *= operand2;
2944: break;
1.207 schwarze 2945: case '/':
1.244 schwarze 2946: if (operand2 == 0) {
1.235 schwarze 2947: mandoc_msg(MANDOCERR_DIVZERO,
1.350 schwarze 2948: ln, *pos, "%s", v);
1.234 kristaps 2949: *res = 0;
2950: break;
2951: }
1.204 schwarze 2952: *res /= operand2;
2953: break;
1.207 schwarze 2954: case '%':
1.244 schwarze 2955: if (operand2 == 0) {
2956: mandoc_msg(MANDOCERR_DIVZERO,
1.350 schwarze 2957: ln, *pos, "%s", v);
1.244 schwarze 2958: *res = 0;
2959: break;
2960: }
1.204 schwarze 2961: *res %= operand2;
2962: break;
1.207 schwarze 2963: case '<':
1.204 schwarze 2964: *res = *res < operand2;
2965: break;
1.207 schwarze 2966: case '>':
1.204 schwarze 2967: *res = *res > operand2;
2968: break;
1.207 schwarze 2969: case 'l':
1.204 schwarze 2970: *res = *res <= operand2;
2971: break;
1.207 schwarze 2972: case 'g':
1.204 schwarze 2973: *res = *res >= operand2;
2974: break;
1.207 schwarze 2975: case '=':
1.204 schwarze 2976: *res = *res == operand2;
2977: break;
1.207 schwarze 2978: case '!':
1.204 schwarze 2979: *res = *res != operand2;
2980: break;
1.207 schwarze 2981: case '&':
1.204 schwarze 2982: *res = *res && operand2;
2983: break;
1.207 schwarze 2984: case ':':
1.204 schwarze 2985: *res = *res || operand2;
2986: break;
1.207 schwarze 2987: case 'i':
1.204 schwarze 2988: if (operand2 < *res)
2989: *res = operand2;
2990: break;
1.207 schwarze 2991: case 'a':
1.204 schwarze 2992: if (operand2 > *res)
2993: *res = operand2;
2994: break;
2995: default:
2996: abort();
2997: }
2998: }
1.277 schwarze 2999: return 1;
1.204 schwarze 3000: }
3001:
1.266 schwarze 3002: /* --- register management ------------------------------------------------ */
3003:
1.180 schwarze 3004: void
1.187 schwarze 3005: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.147 kristaps 3006: {
1.327 schwarze 3007: roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
1.326 schwarze 3008: }
3009:
3010: static void
3011: roff_setregn(struct roff *r, const char *name, size_t len,
1.327 schwarze 3012: int val, char sign, int step)
1.326 schwarze 3013: {
1.180 schwarze 3014: struct roffreg *reg;
3015:
3016: /* Search for an existing register with the same name. */
3017: reg = r->regtab;
3018:
1.326 schwarze 3019: while (reg != NULL && (reg->key.sz != len ||
3020: strncmp(reg->key.p, name, len) != 0))
1.180 schwarze 3021: reg = reg->next;
1.147 kristaps 3022:
1.180 schwarze 3023: if (NULL == reg) {
3024: /* Create a new register. */
3025: reg = mandoc_malloc(sizeof(struct roffreg));
1.326 schwarze 3026: reg->key.p = mandoc_strndup(name, len);
3027: reg->key.sz = len;
1.187 schwarze 3028: reg->val = 0;
1.327 schwarze 3029: reg->step = 0;
1.180 schwarze 3030: reg->next = r->regtab;
3031: r->regtab = reg;
3032: }
3033:
1.187 schwarze 3034: if ('+' == sign)
3035: reg->val += val;
3036: else if ('-' == sign)
3037: reg->val -= val;
3038: else
3039: reg->val = val;
1.327 schwarze 3040: if (step != INT_MIN)
3041: reg->step = step;
1.147 kristaps 3042: }
3043:
1.192 schwarze 3044: /*
3045: * Handle some predefined read-only number registers.
3046: * For now, return -1 if the requested register is not predefined;
3047: * in case a predefined read-only register having the value -1
3048: * were to turn up, another special value would have to be chosen.
3049: */
3050: static int
1.273 schwarze 3051: roff_getregro(const struct roff *r, const char *name)
1.192 schwarze 3052: {
3053:
3054: switch (*name) {
1.273 schwarze 3055: case '$': /* Number of arguments of the last macro evaluated. */
1.339 schwarze 3056: return r->mstackpos < 0 ? 0 : r->mstack[r->mstackpos].argc;
1.207 schwarze 3057: case 'A': /* ASCII approximation mode is always off. */
1.277 schwarze 3058: return 0;
1.207 schwarze 3059: case 'g': /* Groff compatibility mode is always on. */
1.277 schwarze 3060: return 1;
1.207 schwarze 3061: case 'H': /* Fixed horizontal resolution. */
1.277 schwarze 3062: return 24;
1.207 schwarze 3063: case 'j': /* Always adjust left margin only. */
1.277 schwarze 3064: return 0;
1.207 schwarze 3065: case 'T': /* Some output device is always defined. */
1.277 schwarze 3066: return 1;
1.207 schwarze 3067: case 'V': /* Fixed vertical resolution. */
1.277 schwarze 3068: return 40;
1.192 schwarze 3069: default:
1.277 schwarze 3070: return -1;
1.192 schwarze 3071: }
3072: }
3073:
1.181 schwarze 3074: int
1.326 schwarze 3075: roff_getreg(struct roff *r, const char *name)
1.147 kristaps 3076: {
1.327 schwarze 3077: return roff_getregn(r, name, strlen(name), '\0');
1.181 schwarze 3078: }
3079:
3080: static int
1.327 schwarze 3081: roff_getregn(struct roff *r, const char *name, size_t len, char sign)
1.181 schwarze 3082: {
3083: struct roffreg *reg;
1.192 schwarze 3084: int val;
3085:
3086: if ('.' == name[0] && 2 == len) {
1.273 schwarze 3087: val = roff_getregro(r, name + 1);
1.192 schwarze 3088: if (-1 != val)
1.277 schwarze 3089: return val;
1.192 schwarze 3090: }
1.181 schwarze 3091:
1.327 schwarze 3092: for (reg = r->regtab; reg; reg = reg->next) {
1.181 schwarze 3093: if (len == reg->key.sz &&
1.327 schwarze 3094: 0 == strncmp(name, reg->key.p, len)) {
3095: switch (sign) {
3096: case '+':
3097: reg->val += reg->step;
3098: break;
3099: case '-':
3100: reg->val -= reg->step;
3101: break;
3102: default:
3103: break;
3104: }
1.277 schwarze 3105: return reg->val;
1.327 schwarze 3106: }
3107: }
1.271 schwarze 3108:
1.327 schwarze 3109: roff_setregn(r, name, len, 0, '\0', INT_MIN);
1.277 schwarze 3110: return 0;
1.271 schwarze 3111: }
3112:
3113: static int
3114: roff_hasregn(const struct roff *r, const char *name, size_t len)
3115: {
3116: struct roffreg *reg;
3117: int val;
3118:
3119: if ('.' == name[0] && 2 == len) {
1.273 schwarze 3120: val = roff_getregro(r, name + 1);
1.271 schwarze 3121: if (-1 != val)
1.277 schwarze 3122: return 1;
1.271 schwarze 3123: }
3124:
3125: for (reg = r->regtab; reg; reg = reg->next)
3126: if (len == reg->key.sz &&
3127: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 3128: return 1;
1.147 kristaps 3129:
1.277 schwarze 3130: return 0;
1.147 kristaps 3131: }
3132:
1.180 schwarze 3133: static void
3134: roff_freereg(struct roffreg *reg)
1.147 kristaps 3135: {
1.180 schwarze 3136: struct roffreg *old_reg;
1.147 kristaps 3137:
1.180 schwarze 3138: while (NULL != reg) {
3139: free(reg->key.p);
3140: old_reg = reg;
3141: reg = reg->next;
3142: free(old_reg);
3143: }
1.147 kristaps 3144: }
1.92 schwarze 3145:
1.340 schwarze 3146: static int
1.89 kristaps 3147: roff_nr(ROFF_ARGS)
1.83 schwarze 3148: {
1.327 schwarze 3149: char *key, *val, *step;
1.212 schwarze 3150: size_t keysz;
1.327 schwarze 3151: int iv, is, len;
1.187 schwarze 3152: char sign;
1.89 kristaps 3153:
1.238 schwarze 3154: key = val = buf->buf + pos;
3155: if (*key == '\0')
1.277 schwarze 3156: return ROFF_IGN;
1.212 schwarze 3157:
3158: keysz = roff_getname(r, &val, ln, pos);
1.363 schwarze 3159: if (key[keysz] == '\\' || key[keysz] == '\t')
1.277 schwarze 3160: return ROFF_IGN;
1.89 kristaps 3161:
1.187 schwarze 3162: sign = *val;
1.238 schwarze 3163: if (sign == '+' || sign == '-')
1.187 schwarze 3164: val++;
3165:
1.327 schwarze 3166: len = 0;
3167: if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
3168: return ROFF_IGN;
3169:
3170: step = val + len;
3171: while (isspace((unsigned char)*step))
3172: step++;
3173: if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)
3174: is = INT_MIN;
1.109 kristaps 3175:
1.327 schwarze 3176: roff_setregn(r, key, keysz, iv, sign, is);
1.277 schwarze 3177: return ROFF_IGN;
1.203 schwarze 3178: }
3179:
1.340 schwarze 3180: static int
1.203 schwarze 3181: roff_rr(ROFF_ARGS)
3182: {
3183: struct roffreg *reg, **prev;
1.212 schwarze 3184: char *name, *cp;
3185: size_t namesz;
1.203 schwarze 3186:
1.238 schwarze 3187: name = cp = buf->buf + pos;
3188: if (*name == '\0')
1.277 schwarze 3189: return ROFF_IGN;
1.212 schwarze 3190: namesz = roff_getname(r, &cp, ln, pos);
3191: name[namesz] = '\0';
1.203 schwarze 3192:
3193: prev = &r->regtab;
3194: while (1) {
3195: reg = *prev;
1.238 schwarze 3196: if (reg == NULL || !strcmp(name, reg->key.p))
1.203 schwarze 3197: break;
3198: prev = ®->next;
3199: }
1.238 schwarze 3200: if (reg != NULL) {
1.203 schwarze 3201: *prev = reg->next;
3202: free(reg->key.p);
3203: free(reg);
3204: }
1.277 schwarze 3205: return ROFF_IGN;
1.122 schwarze 3206: }
3207:
1.266 schwarze 3208: /* --- handler functions for roff requests -------------------------------- */
3209:
1.340 schwarze 3210: static int
1.122 schwarze 3211: roff_rm(ROFF_ARGS)
3212: {
3213: const char *name;
3214: char *cp;
1.212 schwarze 3215: size_t namesz;
1.122 schwarze 3216:
1.238 schwarze 3217: cp = buf->buf + pos;
3218: while (*cp != '\0') {
1.212 schwarze 3219: name = cp;
1.238 schwarze 3220: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.212 schwarze 3221: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.311 schwarze 3222: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.363 schwarze 3223: if (name[namesz] == '\\' || name[namesz] == '\t')
1.212 schwarze 3224: break;
1.122 schwarze 3225: }
1.277 schwarze 3226: return ROFF_IGN;
1.178 schwarze 3227: }
3228:
1.340 schwarze 3229: static int
1.178 schwarze 3230: roff_it(ROFF_ARGS)
3231: {
3232: int iv;
3233:
3234: /* Parse the number of lines. */
1.261 schwarze 3235:
3236: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.350 schwarze 3237: mandoc_msg(MANDOCERR_IT_NONUM,
3238: ln, ppos, "%s", buf->buf + 1);
1.277 schwarze 3239: return ROFF_IGN;
1.178 schwarze 3240: }
3241:
1.262 schwarze 3242: while (isspace((unsigned char)buf->buf[pos]))
3243: pos++;
3244:
3245: /*
3246: * Arm the input line trap.
3247: * Special-casing "an-trap" is an ugly workaround to cope
3248: * with DocBook stupidly fiddling with man(7) internals.
3249: */
1.261 schwarze 3250:
1.178 schwarze 3251: roffit_lines = iv;
1.262 schwarze 3252: roffit_macro = mandoc_strdup(iv != 1 ||
3253: strcmp(buf->buf + pos, "an-trap") ?
3254: buf->buf + pos : "br");
1.277 schwarze 3255: return ROFF_IGN;
1.175 schwarze 3256: }
3257:
1.340 schwarze 3258: static int
1.175 schwarze 3259: roff_Dd(ROFF_ARGS)
3260: {
1.315 schwarze 3261: int mask;
3262: enum roff_tok t, te;
1.227 schwarze 3263:
1.315 schwarze 3264: switch (tok) {
3265: case ROFF_Dd:
3266: tok = MDOC_Dd;
3267: te = MDOC_MAX;
3268: if (r->format == 0)
3269: r->format = MPARSE_MDOC;
3270: mask = MPARSE_MDOC | MPARSE_QUICK;
3271: break;
3272: case ROFF_TH:
3273: tok = MAN_TH;
3274: te = MAN_MAX;
3275: if (r->format == 0)
3276: r->format = MPARSE_MAN;
3277: mask = MPARSE_QUICK;
3278: break;
3279: default:
3280: abort();
3281: }
3282: if ((r->options & mask) == 0)
3283: for (t = tok; t < te; t++)
3284: roff_setstr(r, roff_name[t], NULL, 0);
1.277 schwarze 3285: return ROFF_CONT;
1.109 kristaps 3286: }
3287:
1.340 schwarze 3288: static int
1.109 kristaps 3289: roff_TE(ROFF_ARGS)
3290: {
1.361 schwarze 3291: r->man->flags &= ~ROFF_NONOFILL;
1.321 schwarze 3292: if (r->tbl == NULL) {
1.350 schwarze 3293: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "TE");
1.321 schwarze 3294: return ROFF_IGN;
3295: }
1.346 schwarze 3296: if (tbl_end(r->tbl, 0) == 0) {
1.321 schwarze 3297: r->tbl = NULL;
1.258 schwarze 3298: free(buf->buf);
3299: buf->buf = mandoc_strdup(".sp");
3300: buf->sz = 4;
1.329 schwarze 3301: *offs = 0;
1.277 schwarze 3302: return ROFF_REPARSE;
1.258 schwarze 3303: }
1.321 schwarze 3304: r->tbl = NULL;
1.277 schwarze 3305: return ROFF_IGN;
1.112 kristaps 3306: }
3307:
1.340 schwarze 3308: static int
1.112 kristaps 3309: roff_T_(ROFF_ARGS)
3310: {
3311:
3312: if (NULL == r->tbl)
1.350 schwarze 3313: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "T&");
1.112 kristaps 3314: else
1.296 schwarze 3315: tbl_restart(ln, ppos, r->tbl);
1.112 kristaps 3316:
1.277 schwarze 3317: return ROFF_IGN;
1.109 kristaps 3318: }
3319:
1.230 schwarze 3320: /*
3321: * Handle in-line equation delimiters.
3322: */
1.340 schwarze 3323: static int
1.238 schwarze 3324: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.151 kristaps 3325: {
1.233 schwarze 3326: char *cp1, *cp2;
3327: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.151 kristaps 3328:
1.230 schwarze 3329: /*
3330: * Outside equations, look for an opening delimiter.
3331: * If we are inside an equation, we already know it is
3332: * in-line, or this function wouldn't have been called;
3333: * so look for a closing delimiter.
3334: */
3335:
1.238 schwarze 3336: cp1 = buf->buf + pos;
1.230 schwarze 3337: cp2 = strchr(cp1, r->eqn == NULL ?
3338: r->last_eqn->odelim : r->last_eqn->cdelim);
3339: if (cp2 == NULL)
1.277 schwarze 3340: return ROFF_CONT;
1.230 schwarze 3341:
1.233 schwarze 3342: *cp2++ = '\0';
3343: bef_pr = bef_nl = aft_nl = aft_pr = "";
3344:
3345: /* Handle preceding text, protecting whitespace. */
3346:
1.238 schwarze 3347: if (*buf->buf != '\0') {
1.233 schwarze 3348: if (r->eqn == NULL)
3349: bef_pr = "\\&";
3350: bef_nl = "\n";
3351: }
3352:
3353: /*
3354: * Prepare replacing the delimiter with an equation macro
3355: * and drop leading white space from the equation.
3356: */
1.230 schwarze 3357:
1.233 schwarze 3358: if (r->eqn == NULL) {
3359: while (*cp2 == ' ')
3360: cp2++;
3361: mac = ".EQ";
3362: } else
3363: mac = ".EN";
3364:
3365: /* Handle following text, protecting whitespace. */
3366:
3367: if (*cp2 != '\0') {
3368: aft_nl = "\n";
3369: if (r->eqn != NULL)
3370: aft_pr = "\\&";
3371: }
3372:
3373: /* Do the actual replacement. */
3374:
1.238 schwarze 3375: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.233 schwarze 3376: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.238 schwarze 3377: free(buf->buf);
3378: buf->buf = cp1;
1.230 schwarze 3379:
3380: /* Toggle the in-line state of the eqn subsystem. */
3381:
3382: r->eqn_inline = r->eqn == NULL;
1.277 schwarze 3383: return ROFF_REPARSE;
1.151 kristaps 3384: }
3385:
1.340 schwarze 3386: static int
1.235 schwarze 3387: roff_EQ(ROFF_ARGS)
1.125 kristaps 3388: {
1.319 schwarze 3389: struct roff_node *n;
3390:
1.356 schwarze 3391: if (r->man->meta.macroset == MACROSET_MAN)
1.322 schwarze 3392: man_breakscope(r->man, ROFF_EQ);
1.319 schwarze 3393: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
3394: if (ln > r->man->last->line)
3395: n->flags |= NODE_LINE;
1.348 schwarze 3396: n->eqn = eqn_box_new();
1.319 schwarze 3397: roff_node_append(r->man, n);
3398: r->man->next = ROFF_NEXT_SIBLING;
1.125 kristaps 3399:
1.238 schwarze 3400: assert(r->eqn == NULL);
1.319 schwarze 3401: if (r->last_eqn == NULL)
1.351 schwarze 3402: r->last_eqn = eqn_alloc();
1.319 schwarze 3403: else
3404: eqn_reset(r->last_eqn);
3405: r->eqn = r->last_eqn;
3406: r->eqn->node = n;
1.151 kristaps 3407:
1.238 schwarze 3408: if (buf->buf[pos] != '\0')
1.350 schwarze 3409: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.238 schwarze 3410: ".EQ %s", buf->buf + pos);
1.151 kristaps 3411:
1.277 schwarze 3412: return ROFF_IGN;
1.125 kristaps 3413: }
3414:
1.340 schwarze 3415: static int
1.125 kristaps 3416: roff_EN(ROFF_ARGS)
3417: {
1.319 schwarze 3418: if (r->eqn != NULL) {
3419: eqn_parse(r->eqn);
3420: r->eqn = NULL;
3421: } else
1.350 schwarze 3422: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "EN");
1.319 schwarze 3423: if (buf->buf[pos] != '\0')
1.350 schwarze 3424: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.319 schwarze 3425: "EN %s", buf->buf + pos);
1.277 schwarze 3426: return ROFF_IGN;
1.125 kristaps 3427: }
3428:
1.340 schwarze 3429: static int
1.109 kristaps 3430: roff_TS(ROFF_ARGS)
3431: {
1.321 schwarze 3432: if (r->tbl != NULL) {
1.350 schwarze 3433: mandoc_msg(MANDOCERR_BLK_BROKEN, ln, ppos, "TS breaks TS");
1.346 schwarze 3434: tbl_end(r->tbl, 0);
1.115 kristaps 3435: }
1.361 schwarze 3436: r->man->flags |= ROFF_NONOFILL;
1.351 schwarze 3437: r->tbl = tbl_alloc(ppos, ln, r->last_tbl);
1.346 schwarze 3438: if (r->last_tbl == NULL)
1.321 schwarze 3439: r->first_tbl = r->tbl;
3440: r->last_tbl = r->tbl;
1.297 schwarze 3441: return ROFF_IGN;
3442: }
3443:
1.340 schwarze 3444: static int
1.358 schwarze 3445: roff_noarg(ROFF_ARGS)
3446: {
3447: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3448: man_breakscope(r->man, tok);
3449: if (tok == ROFF_brp)
3450: tok = ROFF_br;
3451: roff_elem_alloc(r->man, ln, ppos, tok);
3452: if (buf->buf[pos] != '\0')
3453: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
3454: "%s %s", roff_name[tok], buf->buf + pos);
3455: if (tok == ROFF_nf)
3456: r->man->flags |= ROFF_NOFILL;
3457: else if (tok == ROFF_fi)
3458: r->man->flags &= ~ROFF_NOFILL;
3459: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3460: r->man->next = ROFF_NEXT_SIBLING;
3461: return ROFF_IGN;
3462: }
3463:
3464: static int
1.297 schwarze 3465: roff_onearg(ROFF_ARGS)
3466: {
3467: struct roff_node *n;
3468: char *cp;
1.305 schwarze 3469: int npos;
1.297 schwarze 3470:
1.302 schwarze 3471: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.320 schwarze 3472: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
3473: tok == ROFF_ti))
1.302 schwarze 3474: man_breakscope(r->man, tok);
3475:
1.309 schwarze 3476: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.305 schwarze 3477: r->man->last = roffce_node;
3478: r->man->next = ROFF_NEXT_SIBLING;
3479: }
3480:
1.297 schwarze 3481: roff_elem_alloc(r->man, ln, ppos, tok);
3482: n = r->man->last;
3483:
3484: cp = buf->buf + pos;
3485: if (*cp != '\0') {
3486: while (*cp != '\0' && *cp != ' ')
3487: cp++;
3488: while (*cp == ' ')
3489: *cp++ = '\0';
3490: if (*cp != '\0')
1.350 schwarze 3491: mandoc_msg(MANDOCERR_ARG_EXCESS,
3492: ln, (int)(cp - buf->buf),
1.297 schwarze 3493: "%s ... %s", roff_name[tok], cp);
3494: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.300 schwarze 3495: }
3496:
1.309 schwarze 3497: if (tok == ROFF_ce || tok == ROFF_rj) {
3498: if (r->man->last->type == ROFFT_ELEM) {
1.305 schwarze 3499: roff_word_alloc(r->man, ln, pos, "1");
3500: r->man->last->flags |= NODE_NOSRC;
3501: }
3502: npos = 0;
3503: if (roff_evalnum(r, ln, r->man->last->string, &npos,
3504: &roffce_lines, 0) == 0) {
1.350 schwarze 3505: mandoc_msg(MANDOCERR_CE_NONUM,
3506: ln, pos, "ce %s", buf->buf + pos);
1.305 schwarze 3507: roffce_lines = 1;
3508: }
3509: if (roffce_lines < 1) {
3510: r->man->last = r->man->last->parent;
3511: roffce_node = NULL;
3512: roffce_lines = 0;
3513: } else
3514: roffce_node = r->man->last->parent;
3515: } else {
3516: n->flags |= NODE_VALID | NODE_ENDED;
3517: r->man->last = n;
3518: }
3519: n->flags |= NODE_LINE;
1.300 schwarze 3520: r->man->next = ROFF_NEXT_SIBLING;
3521: return ROFF_IGN;
3522: }
3523:
1.340 schwarze 3524: static int
1.300 schwarze 3525: roff_manyarg(ROFF_ARGS)
3526: {
3527: struct roff_node *n;
3528: char *sp, *ep;
3529:
3530: roff_elem_alloc(r->man, ln, ppos, tok);
3531: n = r->man->last;
3532:
3533: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3534: while (*ep != '\0' && *ep != ' ')
3535: ep++;
3536: while (*ep == ' ')
3537: *ep++ = '\0';
3538: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.297 schwarze 3539: }
3540:
3541: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3542: r->man->last = n;
3543: r->man->next = ROFF_NEXT_SIBLING;
1.277 schwarze 3544: return ROFF_IGN;
1.251 schwarze 3545: }
3546:
1.340 schwarze 3547: static int
1.311 schwarze 3548: roff_als(ROFF_ARGS)
3549: {
3550: char *oldn, *newn, *end, *value;
3551: size_t oldsz, newsz, valsz;
3552:
3553: newn = oldn = buf->buf + pos;
3554: if (*newn == '\0')
3555: return ROFF_IGN;
3556:
3557: newsz = roff_getname(r, &oldn, ln, pos);
1.363 schwarze 3558: if (newn[newsz] == '\\' || newn[newsz] == '\t' || *oldn == '\0')
1.311 schwarze 3559: return ROFF_IGN;
3560:
3561: end = oldn;
3562: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3563: if (oldsz == 0)
3564: return ROFF_IGN;
3565:
1.338 schwarze 3566: valsz = mandoc_asprintf(&value, ".%.*s \\$@\\\"\n",
1.315 schwarze 3567: (int)oldsz, oldn);
1.311 schwarze 3568: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3569: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3570: free(value);
1.364 schwarze 3571: return ROFF_IGN;
3572: }
3573:
3574: /*
3575: * The .break request only makes sense inside conditionals,
3576: * and that case is already handled in roff_cond_sub().
3577: */
3578: static int
3579: roff_break(ROFF_ARGS)
3580: {
3581: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, pos, "break");
1.296 schwarze 3582: return ROFF_IGN;
1.92 schwarze 3583: }
3584:
1.340 schwarze 3585: static int
1.174 kristaps 3586: roff_cc(ROFF_ARGS)
3587: {
3588: const char *p;
3589:
1.238 schwarze 3590: p = buf->buf + pos;
1.174 kristaps 3591:
1.238 schwarze 3592: if (*p == '\0' || (r->control = *p++) == '.')
1.303 schwarze 3593: r->control = '\0';
1.174 kristaps 3594:
1.238 schwarze 3595: if (*p != '\0')
1.350 schwarze 3596: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.260 schwarze 3597: ln, p - buf->buf, "cc ... %s", p);
1.174 kristaps 3598:
1.341 schwarze 3599: return ROFF_IGN;
3600: }
3601:
3602: static int
3603: roff_char(ROFF_ARGS)
3604: {
3605: const char *p, *kp, *vp;
3606: size_t ksz, vsz;
3607: int font;
3608:
3609: /* Parse the character to be replaced. */
3610:
3611: kp = buf->buf + pos;
3612: p = kp + 1;
3613: if (*kp == '\0' || (*kp == '\\' &&
3614: mandoc_escape(&p, NULL, NULL) != ESCAPE_SPECIAL) ||
3615: (*p != ' ' && *p != '\0')) {
1.350 schwarze 3616: mandoc_msg(MANDOCERR_CHAR_ARG, ln, pos, "char %s", kp);
1.341 schwarze 3617: return ROFF_IGN;
3618: }
3619: ksz = p - kp;
3620: while (*p == ' ')
3621: p++;
3622:
3623: /*
3624: * If the replacement string contains a font escape sequence,
3625: * we have to restore the font at the end.
3626: */
3627:
3628: vp = p;
3629: vsz = strlen(p);
3630: font = 0;
3631: while (*p != '\0') {
3632: if (*p++ != '\\')
3633: continue;
3634: switch (mandoc_escape(&p, NULL, NULL)) {
3635: case ESCAPE_FONT:
3636: case ESCAPE_FONTROMAN:
3637: case ESCAPE_FONTITALIC:
3638: case ESCAPE_FONTBOLD:
3639: case ESCAPE_FONTBI:
1.378 schwarze 3640: case ESCAPE_FONTCR:
3641: case ESCAPE_FONTCB:
3642: case ESCAPE_FONTCI:
1.341 schwarze 3643: case ESCAPE_FONTPREV:
3644: font++;
3645: break;
3646: default:
3647: break;
3648: }
3649: }
3650: if (font > 1)
1.350 schwarze 3651: mandoc_msg(MANDOCERR_CHAR_FONT,
3652: ln, (int)(vp - buf->buf), "%s", vp);
1.341 schwarze 3653:
3654: /*
3655: * Approximate the effect of .char using the .tr tables.
3656: * XXX In groff, .char and .tr interact differently.
3657: */
3658:
3659: if (ksz == 1) {
3660: if (r->xtab == NULL)
3661: r->xtab = mandoc_calloc(128, sizeof(*r->xtab));
3662: assert((unsigned int)*kp < 128);
3663: free(r->xtab[(int)*kp].p);
3664: r->xtab[(int)*kp].sz = mandoc_asprintf(&r->xtab[(int)*kp].p,
3665: "%s%s", vp, font ? "\fP" : "");
3666: } else {
3667: roff_setstrn(&r->xmbtab, kp, ksz, vp, vsz, 0);
3668: if (font)
3669: roff_setstrn(&r->xmbtab, kp, ksz, "\\fP", 3, 1);
3670: }
1.277 schwarze 3671: return ROFF_IGN;
1.174 kristaps 3672: }
3673:
1.340 schwarze 3674: static int
1.303 schwarze 3675: roff_ec(ROFF_ARGS)
3676: {
3677: const char *p;
3678:
3679: p = buf->buf + pos;
3680: if (*p == '\0')
3681: r->escape = '\\';
3682: else {
3683: r->escape = *p;
3684: if (*++p != '\0')
1.350 schwarze 3685: mandoc_msg(MANDOCERR_ARG_EXCESS, ln,
3686: (int)(p - buf->buf), "ec ... %s", p);
1.303 schwarze 3687: }
3688: return ROFF_IGN;
3689: }
3690:
1.340 schwarze 3691: static int
1.303 schwarze 3692: roff_eo(ROFF_ARGS)
3693: {
3694: r->escape = '\0';
3695: if (buf->buf[pos] != '\0')
1.350 schwarze 3696: mandoc_msg(MANDOCERR_ARG_SKIP,
1.303 schwarze 3697: ln, pos, "eo %s", buf->buf + pos);
1.384 schwarze 3698: return ROFF_IGN;
3699: }
3700:
3701: static int
3702: roff_mc(ROFF_ARGS)
3703: {
3704: struct roff_node *n;
3705: char *cp;
3706:
3707: /* Parse the first argument. */
3708:
3709: cp = buf->buf + pos;
3710: if (*cp != '\0')
3711: cp++;
3712: if (buf->buf[pos] == '\\') {
3713: switch (mandoc_escape((const char **)&cp, NULL, NULL)) {
3714: case ESCAPE_SPECIAL:
3715: case ESCAPE_UNICODE:
3716: case ESCAPE_NUMBERED:
3717: break;
3718: default:
3719: *cp = '\0';
3720: mandoc_msg(MANDOCERR_MC_ESC, ln, pos,
3721: "mc %s", buf->buf + pos);
3722: buf->buf[pos] = '\0';
3723: break;
3724: }
3725: }
3726:
3727: /* Ignore additional arguments. */
3728:
3729: while (*cp == ' ')
3730: *cp++ = '\0';
3731: if (*cp != '\0') {
3732: mandoc_msg(MANDOCERR_MC_DIST, ln, (int)(cp - buf->buf),
3733: "mc ... %s", cp);
3734: *cp = '\0';
3735: }
3736:
3737: /* Create the .mc node. */
3738:
3739: roff_elem_alloc(r->man, ln, ppos, tok);
3740: n = r->man->last;
3741: if (buf->buf[pos] != '\0')
3742: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
3743: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3744: r->man->last = n;
3745: r->man->next = ROFF_NEXT_SIBLING;
1.303 schwarze 3746: return ROFF_IGN;
1.330 schwarze 3747: }
3748:
1.340 schwarze 3749: static int
1.330 schwarze 3750: roff_nop(ROFF_ARGS)
3751: {
3752: while (buf->buf[pos] == ' ')
3753: pos++;
3754: *offs = pos;
3755: return ROFF_RERUN;
1.303 schwarze 3756: }
3757:
1.340 schwarze 3758: static int
1.164 kristaps 3759: roff_tr(ROFF_ARGS)
3760: {
3761: const char *p, *first, *second;
3762: size_t fsz, ssz;
3763:
1.238 schwarze 3764: p = buf->buf + pos;
1.164 kristaps 3765:
1.238 schwarze 3766: if (*p == '\0') {
1.350 schwarze 3767: mandoc_msg(MANDOCERR_REQ_EMPTY, ln, ppos, "tr");
1.277 schwarze 3768: return ROFF_IGN;
1.164 kristaps 3769: }
3770:
1.238 schwarze 3771: while (*p != '\0') {
1.164 kristaps 3772: fsz = ssz = 1;
3773:
3774: first = p++;
1.238 schwarze 3775: if (*first == '\\') {
1.394 schwarze 3776: if (mandoc_escape(&p, NULL, NULL) == ESCAPE_ERROR)
1.277 schwarze 3777: return ROFF_IGN;
1.164 kristaps 3778: fsz = (size_t)(p - first);
3779: }
3780:
3781: second = p++;
1.238 schwarze 3782: if (*second == '\\') {
1.394 schwarze 3783: if (mandoc_escape(&p, NULL, NULL) == ESCAPE_ERROR)
1.277 schwarze 3784: return ROFF_IGN;
1.164 kristaps 3785: ssz = (size_t)(p - second);
1.238 schwarze 3786: } else if (*second == '\0') {
1.350 schwarze 3787: mandoc_msg(MANDOCERR_TR_ODD, ln,
3788: (int)(first - buf->buf), "tr %s", first);
1.164 kristaps 3789: second = " ";
1.165 kristaps 3790: p--;
1.164 kristaps 3791: }
3792:
1.167 kristaps 3793: if (fsz > 1) {
1.207 schwarze 3794: roff_setstrn(&r->xmbtab, first, fsz,
3795: second, ssz, 0);
1.167 kristaps 3796: continue;
3797: }
3798:
1.238 schwarze 3799: if (r->xtab == NULL)
1.207 schwarze 3800: r->xtab = mandoc_calloc(128,
3801: sizeof(struct roffstr));
1.167 kristaps 3802:
3803: free(r->xtab[(int)*first].p);
3804: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3805: r->xtab[(int)*first].sz = ssz;
1.164 kristaps 3806: }
3807:
1.277 schwarze 3808: return ROFF_IGN;
1.164 kristaps 3809: }
3810:
1.339 schwarze 3811: /*
3812: * Implementation of the .return request.
3813: * There is no need to call roff_userret() from here.
3814: * The read module will call that after rewinding the reader stack
3815: * to the place from where the current macro was called.
3816: */
1.340 schwarze 3817: static int
1.339 schwarze 3818: roff_return(ROFF_ARGS)
3819: {
3820: if (r->mstackpos >= 0)
1.340 schwarze 3821: return ROFF_IGN | ROFF_USERRET;
1.339 schwarze 3822:
1.350 schwarze 3823: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "return");
1.339 schwarze 3824: return ROFF_IGN;
3825: }
3826:
1.340 schwarze 3827: static int
1.306 schwarze 3828: roff_rn(ROFF_ARGS)
3829: {
3830: const char *value;
3831: char *oldn, *newn, *end;
3832: size_t oldsz, newsz;
1.315 schwarze 3833: int deftype;
1.306 schwarze 3834:
3835: oldn = newn = buf->buf + pos;
3836: if (*oldn == '\0')
3837: return ROFF_IGN;
3838:
3839: oldsz = roff_getname(r, &newn, ln, pos);
1.363 schwarze 3840: if (oldn[oldsz] == '\\' || oldn[oldsz] == '\t' || *newn == '\0')
1.306 schwarze 3841: return ROFF_IGN;
3842:
3843: end = newn;
3844: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3845: if (newsz == 0)
3846: return ROFF_IGN;
3847:
1.315 schwarze 3848: deftype = ROFFDEF_ANY;
3849: value = roff_getstrn(r, oldn, oldsz, &deftype);
3850: switch (deftype) {
3851: case ROFFDEF_USER:
1.306 schwarze 3852: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3853: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3854: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.315 schwarze 3855: break;
3856: case ROFFDEF_PRE:
3857: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3858: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3859: break;
3860: case ROFFDEF_REN:
1.306 schwarze 3861: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3862: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.315 schwarze 3863: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3864: break;
3865: case ROFFDEF_STD:
1.306 schwarze 3866: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.315 schwarze 3867: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3868: break;
3869: default:
3870: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3871: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3872: break;
3873: }
1.306 schwarze 3874: return ROFF_IGN;
3875: }
3876:
1.340 schwarze 3877: static int
1.339 schwarze 3878: roff_shift(ROFF_ARGS)
3879: {
3880: struct mctx *ctx;
1.382 schwarze 3881: int argpos, levels, i;
1.339 schwarze 3882:
1.382 schwarze 3883: argpos = pos;
1.339 schwarze 3884: levels = 1;
3885: if (buf->buf[pos] != '\0' &&
3886: roff_evalnum(r, ln, buf->buf, &pos, &levels, 0) == 0) {
1.350 schwarze 3887: mandoc_msg(MANDOCERR_CE_NONUM,
1.339 schwarze 3888: ln, pos, "shift %s", buf->buf + pos);
3889: levels = 1;
3890: }
3891: if (r->mstackpos < 0) {
1.350 schwarze 3892: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "shift");
1.339 schwarze 3893: return ROFF_IGN;
3894: }
3895: ctx = r->mstack + r->mstackpos;
3896: if (levels > ctx->argc) {
1.350 schwarze 3897: mandoc_msg(MANDOCERR_SHIFT,
1.382 schwarze 3898: ln, argpos, "%d, but max is %d", levels, ctx->argc);
1.339 schwarze 3899: levels = ctx->argc;
1.382 schwarze 3900: }
3901: if (levels < 0) {
3902: mandoc_msg(MANDOCERR_ARG_NEG, ln, argpos, "shift %d", levels);
3903: levels = 0;
1.339 schwarze 3904: }
3905: if (levels == 0)
3906: return ROFF_IGN;
3907: for (i = 0; i < levels; i++)
3908: free(ctx->argv[i]);
3909: ctx->argc -= levels;
3910: for (i = 0; i < ctx->argc; i++)
3911: ctx->argv[i] = ctx->argv[i + levels];
3912: return ROFF_IGN;
3913: }
3914:
1.340 schwarze 3915: static int
1.105 kristaps 3916: roff_so(ROFF_ARGS)
3917: {
1.249 schwarze 3918: char *name, *cp;
1.105 kristaps 3919:
1.238 schwarze 3920: name = buf->buf + pos;
1.350 schwarze 3921: mandoc_msg(MANDOCERR_SO, ln, ppos, "so %s", name);
1.105 kristaps 3922:
3923: /*
3924: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3925: * opening anything that's not in our cwd or anything beneath
3926: * it. Thus, explicitly disallow traversing up the file-system
3927: * or using absolute paths.
3928: */
3929:
1.238 schwarze 3930: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.350 schwarze 3931: mandoc_msg(MANDOCERR_SO_PATH, ln, ppos, ".so %s", name);
1.249 schwarze 3932: buf->sz = mandoc_asprintf(&cp,
3933: ".sp\nSee the file %s.\n.sp", name) + 1;
3934: free(buf->buf);
3935: buf->buf = cp;
3936: *offs = 0;
1.277 schwarze 3937: return ROFF_REPARSE;
1.105 kristaps 3938: }
3939:
3940: *offs = pos;
1.277 schwarze 3941: return ROFF_SO;
1.105 kristaps 3942: }
1.92 schwarze 3943:
1.266 schwarze 3944: /* --- user defined strings and macros ------------------------------------ */
3945:
1.340 schwarze 3946: static int
1.106 kristaps 3947: roff_userdef(ROFF_ARGS)
1.99 kristaps 3948: {
1.339 schwarze 3949: struct mctx *ctx;
3950: char *arg, *ap, *dst, *src;
3951: size_t sz;
3952:
1.365 schwarze 3953: /* If the macro is empty, ignore it altogether. */
3954:
3955: if (*r->current_string == '\0')
3956: return ROFF_IGN;
3957:
1.339 schwarze 3958: /* Initialize a new macro stack context. */
3959:
3960: if (++r->mstackpos == r->mstacksz) {
3961: r->mstack = mandoc_recallocarray(r->mstack,
3962: r->mstacksz, r->mstacksz + 8, sizeof(*r->mstack));
3963: r->mstacksz += 8;
3964: }
3965: ctx = r->mstack + r->mstackpos;
3966: ctx->argc = 0;
3967:
3968: /*
3969: * Collect pointers to macro argument strings,
3970: * NUL-terminating them and escaping quotes.
3971: */
3972:
3973: src = buf->buf + pos;
3974: while (*src != '\0') {
3975: if (ctx->argc == ctx->argsz) {
3976: ctx->argsz += 8;
3977: ctx->argv = mandoc_reallocarray(ctx->argv,
3978: ctx->argsz, sizeof(*ctx->argv));
3979: }
1.355 schwarze 3980: arg = roff_getarg(r, &src, ln, &pos);
1.339 schwarze 3981: sz = 1; /* For the terminating NUL. */
3982: for (ap = arg; *ap != '\0'; ap++)
3983: sz += *ap == '"' ? 4 : 1;
3984: ctx->argv[ctx->argc++] = dst = mandoc_malloc(sz);
3985: for (ap = arg; *ap != '\0'; ap++) {
3986: if (*ap == '"') {
3987: memcpy(dst, "\\(dq", 4);
3988: dst += 4;
3989: } else
3990: *dst++ = *ap;
1.106 kristaps 3991: }
1.339 schwarze 3992: *dst = '\0';
1.355 schwarze 3993: free(arg);
1.337 schwarze 3994: }
3995:
1.339 schwarze 3996: /* Replace the macro invocation by the macro definition. */
1.263 schwarze 3997:
1.238 schwarze 3998: free(buf->buf);
1.339 schwarze 3999: buf->buf = mandoc_strdup(r->current_string);
4000: buf->sz = strlen(buf->buf) + 1;
1.248 schwarze 4001: *offs = 0;
1.106 kristaps 4002:
1.365 schwarze 4003: return buf->buf[buf->sz - 2] == '\n' ?
1.340 schwarze 4004: ROFF_REPARSE | ROFF_USERCALL : ROFF_IGN | ROFF_APPEND;
1.99 kristaps 4005: }
1.121 schwarze 4006:
1.306 schwarze 4007: /*
4008: * Calling a high-level macro that was renamed with .rn.
4009: * r->current_string has already been set up by roff_parse().
4010: */
1.340 schwarze 4011: static int
1.306 schwarze 4012: roff_renamed(ROFF_ARGS)
4013: {
4014: char *nbuf;
4015:
1.315 schwarze 4016: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
4017: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.306 schwarze 4018: free(buf->buf);
4019: buf->buf = nbuf;
1.329 schwarze 4020: *offs = 0;
1.306 schwarze 4021: return ROFF_CONT;
4022: }
4023:
1.362 schwarze 4024: /*
4025: * Measure the length in bytes of the roff identifier at *cpp
4026: * and advance the pointer to the next word.
4027: */
1.212 schwarze 4028: static size_t
1.121 schwarze 4029: roff_getname(struct roff *r, char **cpp, int ln, int pos)
4030: {
4031: char *name, *cp;
1.393 schwarze 4032: int namesz, inam, iend;
1.121 schwarze 4033:
4034: name = *cpp;
1.362 schwarze 4035: if (*name == '\0')
1.277 schwarze 4036: return 0;
1.121 schwarze 4037:
1.362 schwarze 4038: /* Advance cp to the byte after the end of the name. */
4039:
1.393 schwarze 4040: cp = name;
4041: namesz = 0;
4042: for (;;) {
1.363 schwarze 4043: if (*cp == '\0')
1.212 schwarze 4044: break;
1.363 schwarze 4045: if (*cp == ' ' || *cp == '\t') {
4046: cp++;
4047: break;
4048: }
1.393 schwarze 4049: if (*cp != '\\') {
4050: if (name + namesz < cp) {
4051: name[namesz] = *cp;
4052: *cp = ' ';
4053: }
4054: namesz++;
4055: cp++;
1.121 schwarze 4056: continue;
1.393 schwarze 4057: }
1.362 schwarze 4058: if (cp[1] == '{' || cp[1] == '}')
1.215 schwarze 4059: break;
1.393 schwarze 4060: if (roff_escape(cp, 0, 0, NULL, &inam,
4061: NULL, NULL, &iend) != ESCAPE_UNDEF) {
4062: mandoc_msg(MANDOCERR_NAMESC, ln, pos,
4063: "%.*s%.*s", namesz, name, iend, cp);
4064: cp += iend;
4065: break;
4066: }
4067:
4068: /*
4069: * In an identifier, \\, \., \G and so on
4070: * are reduced to \, ., G and so on,
4071: * vaguely similar to copy mode.
4072: */
4073:
4074: name[namesz++] = cp[inam];
4075: while (iend--) {
4076: if (cp >= name + namesz)
4077: *cp = ' ';
4078: cp++;
4079: }
1.121 schwarze 4080: }
4081:
4082: /* Read past spaces. */
1.362 schwarze 4083:
4084: while (*cp == ' ')
1.121 schwarze 4085: cp++;
4086:
4087: *cpp = cp;
1.277 schwarze 4088: return namesz;
1.121 schwarze 4089: }
4090:
1.106 kristaps 4091: /*
4092: * Store *string into the user-defined string called *name.
4093: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.193 schwarze 4094: * append == 0: replace mode
4095: * append == 1: single-line append mode
4096: * append == 2: multiline append mode, append '\n' after each call
1.106 kristaps 4097: */
1.94 kristaps 4098: static void
1.106 kristaps 4099: roff_setstr(struct roff *r, const char *name, const char *string,
1.193 schwarze 4100: int append)
1.92 schwarze 4101: {
1.315 schwarze 4102: size_t namesz;
1.164 kristaps 4103:
1.315 schwarze 4104: namesz = strlen(name);
4105: roff_setstrn(&r->strtab, name, namesz, string,
1.207 schwarze 4106: string ? strlen(string) : 0, append);
1.315 schwarze 4107: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.164 kristaps 4108: }
4109:
4110: static void
1.166 kristaps 4111: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.193 schwarze 4112: const char *string, size_t stringsz, int append)
1.164 kristaps 4113: {
1.166 kristaps 4114: struct roffkv *n;
1.164 kristaps 4115: char *c;
4116: int i;
4117: size_t oldch, newch;
1.92 schwarze 4118:
1.106 kristaps 4119: /* Search for an existing string with the same name. */
1.164 kristaps 4120: n = *r;
4121:
1.211 schwarze 4122: while (n && (namesz != n->key.sz ||
4123: strncmp(n->key.p, name, namesz)))
1.92 schwarze 4124: n = n->next;
1.94 kristaps 4125:
4126: if (NULL == n) {
1.106 kristaps 4127: /* Create a new string table entry. */
1.166 kristaps 4128: n = mandoc_malloc(sizeof(struct roffkv));
4129: n->key.p = mandoc_strndup(name, namesz);
4130: n->key.sz = namesz;
4131: n->val.p = NULL;
4132: n->val.sz = 0;
1.164 kristaps 4133: n->next = *r;
4134: *r = n;
1.193 schwarze 4135: } else if (0 == append) {
1.166 kristaps 4136: free(n->val.p);
4137: n->val.p = NULL;
4138: n->val.sz = 0;
1.106 kristaps 4139: }
4140:
4141: if (NULL == string)
4142: return;
4143:
4144: /*
4145: * One additional byte for the '\n' in multiline mode,
4146: * and one for the terminating '\0'.
4147: */
1.193 schwarze 4148: newch = stringsz + (1 < append ? 2u : 1u);
1.164 kristaps 4149:
1.166 kristaps 4150: if (NULL == n->val.p) {
4151: n->val.p = mandoc_malloc(newch);
4152: *n->val.p = '\0';
1.106 kristaps 4153: oldch = 0;
4154: } else {
1.166 kristaps 4155: oldch = n->val.sz;
4156: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.106 kristaps 4157: }
4158:
4159: /* Skip existing content in the destination buffer. */
1.166 kristaps 4160: c = n->val.p + (int)oldch;
1.106 kristaps 4161:
4162: /* Append new content to the destination buffer. */
1.164 kristaps 4163: i = 0;
4164: while (i < (int)stringsz) {
1.106 kristaps 4165: /*
4166: * Rudimentary roff copy mode:
4167: * Handle escaped backslashes.
4168: */
1.164 kristaps 4169: if ('\\' == string[i] && '\\' == string[i + 1])
4170: i++;
4171: *c++ = string[i++];
1.106 kristaps 4172: }
1.94 kristaps 4173:
1.106 kristaps 4174: /* Append terminating bytes. */
1.193 schwarze 4175: if (1 < append)
1.106 kristaps 4176: *c++ = '\n';
1.163 kristaps 4177:
1.106 kristaps 4178: *c = '\0';
1.166 kristaps 4179: n->val.sz = (int)(c - n->val.p);
1.92 schwarze 4180: }
4181:
1.94 kristaps 4182: static const char *
1.325 schwarze 4183: roff_getstrn(struct roff *r, const char *name, size_t len,
1.315 schwarze 4184: int *deftype)
1.92 schwarze 4185: {
1.315 schwarze 4186: const struct roffkv *n;
1.325 schwarze 4187: int found, i;
1.315 schwarze 4188: enum roff_tok tok;
4189:
1.325 schwarze 4190: found = 0;
4191: for (n = r->strtab; n != NULL; n = n->next) {
4192: if (strncmp(name, n->key.p, len) != 0 ||
4193: n->key.p[len] != '\0' || n->val.p == NULL)
4194: continue;
4195: if (*deftype & ROFFDEF_USER) {
4196: *deftype = ROFFDEF_USER;
4197: return n->val.p;
4198: } else {
4199: found = 1;
4200: break;
4201: }
4202: }
4203: for (n = r->rentab; n != NULL; n = n->next) {
4204: if (strncmp(name, n->key.p, len) != 0 ||
4205: n->key.p[len] != '\0' || n->val.p == NULL)
4206: continue;
4207: if (*deftype & ROFFDEF_REN) {
4208: *deftype = ROFFDEF_REN;
4209: return n->val.p;
4210: } else {
4211: found = 1;
4212: break;
1.315 schwarze 4213: }
4214: }
1.325 schwarze 4215: for (i = 0; i < PREDEFS_MAX; i++) {
4216: if (strncmp(name, predefs[i].name, len) != 0 ||
4217: predefs[i].name[len] != '\0')
4218: continue;
4219: if (*deftype & ROFFDEF_PRE) {
4220: *deftype = ROFFDEF_PRE;
4221: return predefs[i].str;
4222: } else {
4223: found = 1;
4224: break;
1.315 schwarze 4225: }
4226: }
1.356 schwarze 4227: if (r->man->meta.macroset != MACROSET_MAN) {
1.325 schwarze 4228: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
4229: if (strncmp(name, roff_name[tok], len) != 0 ||
4230: roff_name[tok][len] != '\0')
4231: continue;
4232: if (*deftype & ROFFDEF_STD) {
4233: *deftype = ROFFDEF_STD;
4234: return NULL;
4235: } else {
4236: found = 1;
4237: break;
1.315 schwarze 4238: }
4239: }
4240: }
1.356 schwarze 4241: if (r->man->meta.macroset != MACROSET_MDOC) {
1.325 schwarze 4242: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
4243: if (strncmp(name, roff_name[tok], len) != 0 ||
4244: roff_name[tok][len] != '\0')
4245: continue;
4246: if (*deftype & ROFFDEF_STD) {
4247: *deftype = ROFFDEF_STD;
4248: return NULL;
4249: } else {
4250: found = 1;
4251: break;
1.315 schwarze 4252: }
4253: }
1.325 schwarze 4254: }
4255:
4256: if (found == 0 && *deftype != ROFFDEF_ANY) {
4257: if (*deftype & ROFFDEF_REN) {
4258: /*
4259: * This might still be a request,
4260: * so do not treat it as undefined yet.
4261: */
4262: *deftype = ROFFDEF_UNDEF;
4263: return NULL;
1.315 schwarze 4264: }
1.325 schwarze 4265:
4266: /* Using an undefined string defines it to be empty. */
4267:
4268: roff_setstrn(&r->strtab, name, len, "", 0, 0);
4269: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.315 schwarze 4270: }
1.325 schwarze 4271:
1.315 schwarze 4272: *deftype = 0;
1.277 schwarze 4273: return NULL;
1.92 schwarze 4274: }
4275:
1.94 kristaps 4276: static void
1.167 kristaps 4277: roff_freestr(struct roffkv *r)
1.92 schwarze 4278: {
1.166 kristaps 4279: struct roffkv *n, *nn;
1.92 schwarze 4280:
1.167 kristaps 4281: for (n = r; n; n = nn) {
1.166 kristaps 4282: free(n->key.p);
4283: free(n->val.p);
1.92 schwarze 4284: nn = n->next;
4285: free(n);
4286: }
1.114 kristaps 4287: }
1.266 schwarze 4288:
4289: /* --- accessors and utility functions ------------------------------------ */
1.164 kristaps 4290:
4291: /*
4292: * Duplicate an input string, making the appropriate character
4293: * conversations (as stipulated by `tr') along the way.
4294: * Returns a heap-allocated string with all the replacements made.
4295: */
4296: char *
4297: roff_strdup(const struct roff *r, const char *p)
4298: {
1.166 kristaps 4299: const struct roffkv *cp;
1.164 kristaps 4300: char *res;
4301: const char *pp;
4302: size_t ssz, sz;
4303: enum mandoc_esc esc;
4304:
1.167 kristaps 4305: if (NULL == r->xmbtab && NULL == r->xtab)
1.277 schwarze 4306: return mandoc_strdup(p);
1.164 kristaps 4307: else if ('\0' == *p)
1.277 schwarze 4308: return mandoc_strdup("");
1.164 kristaps 4309:
4310: /*
4311: * Step through each character looking for term matches
4312: * (remember that a `tr' can be invoked with an escape, which is
4313: * a glyph but the escape is multi-character).
4314: * We only do this if the character hash has been initialised
4315: * and the string is >0 length.
4316: */
4317:
4318: res = NULL;
4319: ssz = 0;
4320:
4321: while ('\0' != *p) {
1.289 schwarze 4322: assert((unsigned int)*p < 128);
4323: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.167 kristaps 4324: sz = r->xtab[(int)*p].sz;
4325: res = mandoc_realloc(res, ssz + sz + 1);
4326: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
4327: ssz += sz;
4328: p++;
4329: continue;
4330: } else if ('\\' != *p) {
4331: res = mandoc_realloc(res, ssz + 2);
4332: res[ssz++] = *p++;
4333: continue;
4334: }
4335:
1.164 kristaps 4336: /* Search for term matches. */
1.167 kristaps 4337: for (cp = r->xmbtab; cp; cp = cp->next)
1.166 kristaps 4338: if (0 == strncmp(p, cp->key.p, cp->key.sz))
1.164 kristaps 4339: break;
4340:
4341: if (NULL != cp) {
4342: /*
4343: * A match has been found.
4344: * Append the match to the array and move
4345: * forward by its keysize.
4346: */
1.207 schwarze 4347: res = mandoc_realloc(res,
4348: ssz + cp->val.sz + 1);
1.166 kristaps 4349: memcpy(res + ssz, cp->val.p, cp->val.sz);
4350: ssz += cp->val.sz;
4351: p += (int)cp->key.sz;
1.164 kristaps 4352: continue;
4353: }
4354:
1.167 kristaps 4355: /*
4356: * Handle escapes carefully: we need to copy
4357: * over just the escape itself, or else we might
4358: * do replacements within the escape itself.
4359: * Make sure to pass along the bogus string.
4360: */
4361: pp = p++;
4362: esc = mandoc_escape(&p, NULL, NULL);
4363: if (ESCAPE_ERROR == esc) {
4364: sz = strlen(pp);
1.164 kristaps 4365: res = mandoc_realloc(res, ssz + sz + 1);
4366: memcpy(res + ssz, pp, sz);
1.167 kristaps 4367: break;
1.164 kristaps 4368: }
1.207 schwarze 4369: /*
4370: * We bail out on bad escapes.
1.167 kristaps 4371: * No need to warn: we already did so when
1.355 schwarze 4372: * roff_expand() was called.
1.167 kristaps 4373: */
4374: sz = (int)(p - pp);
4375: res = mandoc_realloc(res, ssz + sz + 1);
4376: memcpy(res + ssz, pp, sz);
4377: ssz += sz;
1.164 kristaps 4378: }
4379:
4380: res[(int)ssz] = '\0';
1.277 schwarze 4381: return res;
1.227 schwarze 4382: }
4383:
4384: int
4385: roff_getformat(const struct roff *r)
4386: {
4387:
1.277 schwarze 4388: return r->format;
1.174 kristaps 4389: }
4390:
4391: /*
1.207 schwarze 4392: * Find out whether a line is a macro line or not.
1.174 kristaps 4393: * If it is, adjust the current position and return one; if it isn't,
4394: * return zero and don't change the current position.
4395: * If the control character has been set with `.cc', then let that grain
4396: * precedence.
1.396 schwarze 4397: * This is slightly contrary to groff, where using the non-breaking
1.174 kristaps 4398: * control character when `cc' has been invoked will cause the
4399: * non-breaking macro contents to be printed verbatim.
4400: */
4401: int
4402: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
4403: {
4404: int pos;
4405:
4406: pos = *ppos;
4407:
1.303 schwarze 4408: if (r->control != '\0' && cp[pos] == r->control)
1.174 kristaps 4409: pos++;
1.303 schwarze 4410: else if (r->control != '\0')
1.277 schwarze 4411: return 0;
1.174 kristaps 4412: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
4413: pos += 2;
4414: else if ('.' == cp[pos] || '\'' == cp[pos])
4415: pos++;
4416: else
1.277 schwarze 4417: return 0;
1.174 kristaps 4418:
4419: while (' ' == cp[pos] || '\t' == cp[pos])
4420: pos++;
4421:
4422: *ppos = pos;
1.277 schwarze 4423: return 1;
1.74 kristaps 4424: }
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