Annotation of mandoc/roff.c, Revision 1.399
1.399 ! schwarze 1: /* $Id: roff.c,v 1.398 2023/10/22 16:02:01 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",
1.317 schwarze 370: "UE", "MT", "ME", NULL
1.294 schwarze 371: };
372: const char *const *roff_name = __roff_name;
373:
374: static struct roffmac roffs[TOKEN_NONE] = {
1.358 schwarze 375: { roff_noarg, NULL, NULL, 0 }, /* br */
1.305 schwarze 376: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.358 schwarze 377: { roff_noarg, NULL, NULL, 0 }, /* fi */
1.297 schwarze 378: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.298 schwarze 379: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.384 schwarze 380: { roff_mc, NULL, NULL, 0 }, /* mc */
1.358 schwarze 381: { roff_noarg, NULL, NULL, 0 }, /* nf */
1.312 schwarze 382: { roff_onearg, NULL, NULL, 0 }, /* po */
1.309 schwarze 383: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.299 schwarze 384: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.300 schwarze 385: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.301 schwarze 386: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.296 schwarze 387: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.295 schwarze 388: { roff_unsupp, NULL, NULL, 0 }, /* ab */
389: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
390: { roff_line_ignore, NULL, NULL, 0 }, /* af */
391: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.311 schwarze 392: { roff_als, NULL, NULL, 0 }, /* als */
1.295 schwarze 393: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
394: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
395: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
396: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
397: { roff_ds, NULL, NULL, 0 }, /* as */
398: { roff_ds, NULL, NULL, 0 }, /* as1 */
399: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
400: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
401: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
402: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
403: { roff_unsupp, NULL, NULL, 0 }, /* blm */
404: { roff_unsupp, NULL, NULL, 0 }, /* box */
405: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
406: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
407: { roff_unsupp, NULL, NULL, 0 }, /* BP */
1.364 schwarze 408: { roff_break, NULL, NULL, 0 }, /* break */
1.295 schwarze 409: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
410: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.358 schwarze 411: { roff_noarg, NULL, NULL, 0 }, /* brp */
1.295 schwarze 412: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
413: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
414: { roff_cc, NULL, NULL, 0 }, /* cc */
415: { roff_insec, NULL, NULL, 0 }, /* cf */
416: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
417: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
1.341 schwarze 418: { roff_char, NULL, NULL, 0 }, /* char */
1.295 schwarze 419: { roff_unsupp, NULL, NULL, 0 }, /* chop */
420: { roff_line_ignore, NULL, NULL, 0 }, /* class */
421: { roff_insec, NULL, NULL, 0 }, /* close */
422: { roff_unsupp, NULL, NULL, 0 }, /* CL */
423: { roff_line_ignore, NULL, NULL, 0 }, /* color */
424: { roff_unsupp, NULL, NULL, 0 }, /* composite */
425: { roff_unsupp, NULL, NULL, 0 }, /* continue */
426: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
427: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
428: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
429: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
430: { roff_unsupp, NULL, NULL, 0 }, /* da */
431: { roff_unsupp, NULL, NULL, 0 }, /* dch */
432: { roff_Dd, NULL, NULL, 0 }, /* Dd */
433: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
434: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
435: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
436: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
437: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
438: { roff_unsupp, NULL, NULL, 0 }, /* device */
439: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
440: { roff_unsupp, NULL, NULL, 0 }, /* di */
441: { roff_unsupp, NULL, NULL, 0 }, /* do */
442: { roff_ds, NULL, NULL, 0 }, /* ds */
443: { roff_ds, NULL, NULL, 0 }, /* ds1 */
444: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
445: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.303 schwarze 446: { roff_ec, NULL, NULL, 0 }, /* ec */
1.295 schwarze 447: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
448: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
449: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
450: { roff_unsupp, NULL, NULL, 0 }, /* em */
451: { roff_EN, NULL, NULL, 0 }, /* EN */
1.303 schwarze 452: { roff_eo, NULL, NULL, 0 }, /* eo */
1.295 schwarze 453: { roff_unsupp, NULL, NULL, 0 }, /* EP */
454: { roff_EQ, NULL, NULL, 0 }, /* EQ */
455: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
456: { roff_unsupp, NULL, NULL, 0 }, /* ev */
457: { roff_unsupp, NULL, NULL, 0 }, /* evc */
458: { roff_unsupp, NULL, NULL, 0 }, /* ex */
459: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
460: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
461: { roff_unsupp, NULL, NULL, 0 }, /* fc */
462: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
463: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
464: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
465: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
466: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
467: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
468: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
469: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
470: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
471: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
472: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
473: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
474: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
475: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
476: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
477: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
478: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
479: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
480: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
481: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
482: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
483: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
484: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
485: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
486: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
487: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
488: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
489: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
490: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
491: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
492: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
493: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
494: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
495: { roff_unsupp, NULL, NULL, 0 }, /* index */
496: { roff_it, NULL, NULL, 0 }, /* it */
497: { roff_unsupp, NULL, NULL, 0 }, /* itc */
498: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
499: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
500: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
501: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
502: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
503: { roff_unsupp, NULL, NULL, 0 }, /* lc */
504: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
505: { roff_unsupp, NULL, NULL, 0 }, /* lds */
506: { roff_unsupp, NULL, NULL, 0 }, /* length */
507: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
508: { roff_insec, NULL, NULL, 0 }, /* lf */
509: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
510: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
511: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
512: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
513: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
514: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
515: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
516: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
517: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
518: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
519: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
520: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
521: { roff_insec, NULL, NULL, 0 }, /* mso */
522: { roff_line_ignore, NULL, NULL, 0 }, /* na */
523: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
524: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
525: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
526: { roff_unsupp, NULL, NULL, 0 }, /* nm */
527: { roff_unsupp, NULL, NULL, 0 }, /* nn */
1.330 schwarze 528: { roff_nop, NULL, NULL, 0 }, /* nop */
1.295 schwarze 529: { roff_nr, NULL, NULL, 0 }, /* nr */
530: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
531: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
532: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
533: { roff_insec, NULL, NULL, 0 }, /* nx */
534: { roff_insec, NULL, NULL, 0 }, /* open */
535: { roff_insec, NULL, NULL, 0 }, /* opena */
536: { roff_line_ignore, NULL, NULL, 0 }, /* os */
537: { roff_unsupp, NULL, NULL, 0 }, /* output */
538: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
539: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
540: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
541: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
542: { roff_insec, NULL, NULL, 0 }, /* pi */
543: { roff_unsupp, NULL, NULL, 0 }, /* PI */
544: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
545: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
546: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
547: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
548: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
549: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
550: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
551: { roff_insec, NULL, NULL, 0 }, /* pso */
552: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
553: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
554: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
555: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
556: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
1.339 schwarze 557: { roff_return, NULL, NULL, 0 }, /* return */
1.295 schwarze 558: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
559: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
560: { roff_rm, NULL, NULL, 0 }, /* rm */
1.306 schwarze 561: { roff_rn, NULL, NULL, 0 }, /* rn */
1.295 schwarze 562: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
563: { roff_rr, NULL, NULL, 0 }, /* rr */
564: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
565: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
566: { roff_unsupp, NULL, NULL, 0 }, /* schar */
567: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
568: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
1.339 schwarze 569: { roff_shift, NULL, NULL, 0 }, /* shift */
1.295 schwarze 570: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
571: { roff_so, NULL, NULL, 0 }, /* so */
572: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
573: { roff_line_ignore, NULL, NULL, 0 }, /* special */
574: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
575: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
576: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
577: { roff_unsupp, NULL, NULL, 0 }, /* substring */
578: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
579: { roff_insec, NULL, NULL, 0 }, /* sy */
580: { roff_T_, NULL, NULL, 0 }, /* T& */
581: { roff_unsupp, NULL, NULL, 0 }, /* tc */
582: { roff_TE, NULL, NULL, 0 }, /* TE */
1.315 schwarze 583: { roff_Dd, NULL, NULL, 0 }, /* TH */
1.295 schwarze 584: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
585: { roff_unsupp, NULL, NULL, 0 }, /* tl */
586: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
587: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
588: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
589: { roff_tr, NULL, NULL, 0 }, /* tr */
590: { roff_line_ignore, NULL, NULL, 0 }, /* track */
591: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
592: { roff_insec, NULL, NULL, 0 }, /* trf */
593: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
594: { roff_unsupp, NULL, NULL, 0 }, /* trin */
595: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
596: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
597: { roff_TS, NULL, NULL, 0 }, /* TS */
598: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
599: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
600: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
601: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
602: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
603: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
604: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
605: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
606: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
607: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
608: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
609: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
610: { roff_unsupp, NULL, NULL, 0 }, /* wh */
1.340 schwarze 611: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /*while*/
1.295 schwarze 612: { roff_insec, NULL, NULL, 0 }, /* write */
613: { roff_insec, NULL, NULL, 0 }, /* writec */
614: { roff_insec, NULL, NULL, 0 }, /* writem */
615: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
616: { roff_cblock, NULL, NULL, 0 }, /* . */
1.306 schwarze 617: { roff_renamed, NULL, NULL, 0 },
1.295 schwarze 618: { roff_userdef, NULL, NULL, 0 }
1.67 kristaps 619: };
620:
1.141 kristaps 621: /* Array of injected predefined strings. */
622: #define PREDEFS_MAX 38
623: static const struct predef predefs[PREDEFS_MAX] = {
624: #include "predefs.in"
625: };
626:
1.305 schwarze 627: static int roffce_lines; /* number of input lines to center */
628: static struct roff_node *roffce_node; /* active request */
1.178 schwarze 629: static int roffit_lines; /* number of lines to delay */
630: static char *roffit_macro; /* nil-terminated macro line */
631:
1.207 schwarze 632:
1.266 schwarze 633: /* --- request table ------------------------------------------------------ */
634:
1.295 schwarze 635: struct ohash *
636: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.85 kristaps 637: {
1.295 schwarze 638: struct ohash *htab;
639: struct roffreq *req;
640: enum roff_tok tok;
641: size_t sz;
642: unsigned int slot;
1.85 kristaps 643:
1.295 schwarze 644: htab = mandoc_malloc(sizeof(*htab));
645: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.85 kristaps 646:
1.295 schwarze 647: for (tok = mintok; tok < maxtok; tok++) {
1.296 schwarze 648: if (roff_name[tok] == NULL)
649: continue;
1.295 schwarze 650: sz = strlen(roff_name[tok]);
651: req = mandoc_malloc(sizeof(*req) + sz + 1);
652: req->tok = tok;
653: memcpy(req->name, roff_name[tok], sz + 1);
654: slot = ohash_qlookup(htab, req->name);
655: ohash_insert(htab, slot, req);
1.85 kristaps 656: }
1.295 schwarze 657: return htab;
1.85 kristaps 658: }
659:
1.295 schwarze 660: void
661: roffhash_free(struct ohash *htab)
1.67 kristaps 662: {
1.295 schwarze 663: struct roffreq *req;
664: unsigned int slot;
1.67 kristaps 665:
1.295 schwarze 666: if (htab == NULL)
667: return;
668: for (req = ohash_first(htab, &slot); req != NULL;
669: req = ohash_next(htab, &slot))
670: free(req);
671: ohash_delete(htab);
672: free(htab);
673: }
674:
675: enum roff_tok
676: roffhash_find(struct ohash *htab, const char *name, size_t sz)
677: {
678: struct roffreq *req;
679: const char *end;
680:
681: if (sz) {
682: end = name + sz;
683: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
684: } else
685: req = ohash_find(htab, ohash_qlookup(htab, name));
686: return req == NULL ? TOKEN_NONE : req->tok;
1.67 kristaps 687: }
688:
1.266 schwarze 689: /* --- stack of request blocks -------------------------------------------- */
690:
1.67 kristaps 691: /*
692: * Pop the current node off of the stack of roff instructions currently
1.364 schwarze 693: * pending. Return 1 if it is a loop or 0 otherwise.
1.67 kristaps 694: */
1.340 schwarze 695: static int
1.67 kristaps 696: roffnode_pop(struct roff *r)
697: {
698: struct roffnode *p;
1.340 schwarze 699: int inloop;
1.67 kristaps 700:
1.207 schwarze 701: p = r->last;
1.340 schwarze 702: inloop = p->tok == ROFF_while;
703: r->last = p->parent;
1.106 kristaps 704: free(p->name);
705: free(p->end);
1.67 kristaps 706: free(p);
1.340 schwarze 707: return inloop;
1.67 kristaps 708: }
709:
710: /*
711: * Push a roff node onto the instruction stack. This must later be
712: * removed with roffnode_pop().
713: */
1.98 schwarze 714: static void
1.294 schwarze 715: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.106 kristaps 716: int line, int col)
1.67 kristaps 717: {
718: struct roffnode *p;
719:
1.98 schwarze 720: p = mandoc_calloc(1, sizeof(struct roffnode));
1.67 kristaps 721: p->tok = tok;
1.106 kristaps 722: if (name)
723: p->name = mandoc_strdup(name);
1.67 kristaps 724: p->parent = r->last;
725: p->line = line;
726: p->col = col;
1.198 schwarze 727: p->rule = p->parent ? p->parent->rule : 0;
1.67 kristaps 728:
729: r->last = p;
730: }
731:
1.266 schwarze 732: /* --- roff parser state data management ---------------------------------- */
733:
1.67 kristaps 734: static void
735: roff_free1(struct roff *r)
736: {
1.167 kristaps 737: int i;
1.67 kristaps 738:
1.346 schwarze 739: tbl_free(r->first_tbl);
1.113 kristaps 740: r->first_tbl = r->last_tbl = r->tbl = NULL;
741:
1.347 schwarze 742: eqn_free(r->last_eqn);
1.319 schwarze 743: r->last_eqn = r->eqn = NULL;
1.125 kristaps 744:
1.339 schwarze 745: while (r->mstackpos >= 0)
746: roff_userret(r);
747:
1.67 kristaps 748: while (r->last)
749: roffnode_pop(r);
1.109 kristaps 750:
1.223 schwarze 751: free (r->rstack);
752: r->rstack = NULL;
753: r->rstacksz = 0;
754: r->rstackpos = -1;
755:
756: roff_freereg(r->regtab);
757: r->regtab = NULL;
758:
1.167 kristaps 759: roff_freestr(r->strtab);
1.306 schwarze 760: roff_freestr(r->rentab);
1.167 kristaps 761: roff_freestr(r->xmbtab);
1.306 schwarze 762: r->strtab = r->rentab = r->xmbtab = NULL;
1.167 kristaps 763:
764: if (r->xtab)
765: for (i = 0; i < 128; i++)
766: free(r->xtab[i].p);
767: free(r->xtab);
768: r->xtab = NULL;
1.67 kristaps 769: }
770:
771: void
772: roff_reset(struct roff *r)
773: {
774: roff_free1(r);
1.367 schwarze 775: r->options |= MPARSE_COMMENT;
1.227 schwarze 776: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.303 schwarze 777: r->control = '\0';
778: r->escape = '\\';
1.307 schwarze 779: roffce_lines = 0;
780: roffce_node = NULL;
781: roffit_lines = 0;
782: roffit_macro = NULL;
1.67 kristaps 783: }
784:
785: void
786: roff_free(struct roff *r)
787: {
1.366 schwarze 788: int i;
1.339 schwarze 789:
1.67 kristaps 790: roff_free1(r);
1.339 schwarze 791: for (i = 0; i < r->mstacksz; i++)
792: free(r->mstack[i].argv);
793: free(r->mstack);
1.295 schwarze 794: roffhash_free(r->reqtab);
1.67 kristaps 795: free(r);
796: }
797:
798: struct roff *
1.351 schwarze 799: roff_alloc(int options)
1.67 kristaps 800: {
801: struct roff *r;
802:
1.98 schwarze 803: r = mandoc_calloc(1, sizeof(struct roff));
1.328 schwarze 804: r->reqtab = roffhash_alloc(0, ROFF_RENAMED);
1.367 schwarze 805: r->options = options | MPARSE_COMMENT;
1.227 schwarze 806: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.339 schwarze 807: r->mstackpos = -1;
1.82 kristaps 808: r->rstackpos = -1;
1.303 schwarze 809: r->escape = '\\';
1.277 schwarze 810: return r;
1.265 schwarze 811: }
812:
1.266 schwarze 813: /* --- syntax tree state data management ---------------------------------- */
814:
1.265 schwarze 815: static void
816: roff_man_free1(struct roff_man *man)
817: {
1.356 schwarze 818: if (man->meta.first != NULL)
819: roff_node_delete(man, man->meta.first);
1.265 schwarze 820: free(man->meta.msec);
821: free(man->meta.vol);
822: free(man->meta.os);
823: free(man->meta.arch);
824: free(man->meta.title);
825: free(man->meta.name);
826: free(man->meta.date);
1.356 schwarze 827: free(man->meta.sodest);
1.265 schwarze 828: }
829:
1.357 schwarze 830: void
831: roff_state_reset(struct roff_man *man)
832: {
833: man->last = man->meta.first;
834: man->last_es = NULL;
835: man->flags = 0;
836: man->lastsec = man->lastnamed = SEC_NONE;
837: man->next = ROFF_NEXT_CHILD;
838: roff_setreg(man->roff, "nS", 0, '=');
839: }
840:
1.265 schwarze 841: static void
842: roff_man_alloc1(struct roff_man *man)
843: {
844: memset(&man->meta, 0, sizeof(man->meta));
1.356 schwarze 845: man->meta.first = mandoc_calloc(1, sizeof(*man->meta.first));
846: man->meta.first->type = ROFFT_ROOT;
847: man->meta.macroset = MACROSET_NONE;
1.357 schwarze 848: roff_state_reset(man);
1.265 schwarze 849: }
850:
851: void
852: roff_man_reset(struct roff_man *man)
853: {
854: roff_man_free1(man);
855: roff_man_alloc1(man);
856: }
857:
858: void
859: roff_man_free(struct roff_man *man)
860: {
861: roff_man_free1(man);
1.380 schwarze 862: free(man->os_r);
1.265 schwarze 863: free(man);
864: }
865:
866: struct roff_man *
1.351 schwarze 867: roff_man_alloc(struct roff *roff, const char *os_s, int quick)
1.265 schwarze 868: {
869: struct roff_man *man;
870:
871: man = mandoc_calloc(1, sizeof(*man));
872: man->roff = roff;
1.316 schwarze 873: man->os_s = os_s;
1.265 schwarze 874: man->quick = quick;
875: roff_man_alloc1(man);
1.296 schwarze 876: roff->man = man;
1.277 schwarze 877: return man;
1.67 kristaps 878: }
879:
1.266 schwarze 880: /* --- syntax tree handling ----------------------------------------------- */
881:
882: struct roff_node *
883: roff_node_alloc(struct roff_man *man, int line, int pos,
884: enum roff_type type, int tok)
885: {
886: struct roff_node *n;
887:
888: n = mandoc_calloc(1, sizeof(*n));
889: n->line = line;
890: n->pos = pos;
891: n->tok = tok;
892: n->type = type;
893: n->sec = man->lastsec;
894:
895: if (man->flags & MDOC_SYNOPSIS)
1.285 schwarze 896: n->flags |= NODE_SYNPRETTY;
1.266 schwarze 897: else
1.285 schwarze 898: n->flags &= ~NODE_SYNPRETTY;
1.360 schwarze 899: if ((man->flags & (ROFF_NOFILL | ROFF_NONOFILL)) == ROFF_NOFILL)
1.359 schwarze 900: n->flags |= NODE_NOFILL;
901: else
902: n->flags &= ~NODE_NOFILL;
1.266 schwarze 903: if (man->flags & MDOC_NEWLINE)
1.285 schwarze 904: n->flags |= NODE_LINE;
1.266 schwarze 905: man->flags &= ~MDOC_NEWLINE;
906:
1.277 schwarze 907: return n;
1.266 schwarze 908: }
909:
910: void
911: roff_node_append(struct roff_man *man, struct roff_node *n)
912: {
913:
914: switch (man->next) {
915: case ROFF_NEXT_SIBLING:
1.281 schwarze 916: if (man->last->next != NULL) {
917: n->next = man->last->next;
918: man->last->next->prev = n;
919: } else
920: man->last->parent->last = n;
1.266 schwarze 921: man->last->next = n;
922: n->prev = man->last;
923: n->parent = man->last->parent;
924: break;
925: case ROFF_NEXT_CHILD:
1.287 schwarze 926: if (man->last->child != NULL) {
927: n->next = man->last->child;
928: man->last->child->prev = n;
929: } else
930: man->last->last = n;
1.266 schwarze 931: man->last->child = n;
932: n->parent = man->last;
933: break;
934: default:
935: abort();
936: }
1.282 schwarze 937: man->last = n;
1.266 schwarze 938:
939: switch (n->type) {
940: case ROFFT_HEAD:
941: n->parent->head = n;
942: break;
943: case ROFFT_BODY:
1.282 schwarze 944: if (n->end != ENDBODY_NOT)
945: return;
1.266 schwarze 946: n->parent->body = n;
947: break;
948: case ROFFT_TAIL:
949: n->parent->tail = n;
950: break;
951: default:
1.282 schwarze 952: return;
1.266 schwarze 953: }
1.282 schwarze 954:
955: /*
956: * Copy over the normalised-data pointer of our parent. Not
957: * everybody has one, but copying a null pointer is fine.
958: */
959:
960: n->norm = n->parent->norm;
961: assert(n->parent->type == ROFFT_BLOCK);
1.266 schwarze 962: }
963:
1.267 schwarze 964: void
965: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
966: {
967: struct roff_node *n;
968:
969: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
970: n->string = roff_strdup(man->roff, word);
971: roff_node_append(man, n);
1.286 schwarze 972: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 973: man->next = ROFF_NEXT_SIBLING;
974: }
975:
976: void
977: roff_word_append(struct roff_man *man, const char *word)
978: {
979: struct roff_node *n;
980: char *addstr, *newstr;
981:
982: n = man->last;
983: addstr = roff_strdup(man->roff, word);
984: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
985: free(addstr);
986: free(n->string);
987: n->string = newstr;
988: man->next = ROFF_NEXT_SIBLING;
1.268 schwarze 989: }
990:
991: void
992: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
993: {
994: struct roff_node *n;
995:
996: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
997: roff_node_append(man, n);
998: man->next = ROFF_NEXT_CHILD;
999: }
1000:
1001: struct roff_node *
1002: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
1003: {
1004: struct roff_node *n;
1005:
1006: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
1007: roff_node_append(man, n);
1008: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1009: return n;
1.267 schwarze 1010: }
1011:
1.266 schwarze 1012: struct roff_node *
1013: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
1014: {
1015: struct roff_node *n;
1016:
1017: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
1018: roff_node_append(man, n);
1019: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1020: return n;
1.266 schwarze 1021: }
1022:
1023: struct roff_node *
1024: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1025: {
1026: struct roff_node *n;
1027:
1028: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1029: roff_node_append(man, n);
1030: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1031: return n;
1.267 schwarze 1032: }
1033:
1.321 schwarze 1034: static void
1.346 schwarze 1035: roff_addtbl(struct roff_man *man, int line, struct tbl_node *tbl)
1.267 schwarze 1036: {
1037: struct roff_node *n;
1.346 schwarze 1038: struct tbl_span *span;
1.267 schwarze 1039:
1.356 schwarze 1040: if (man->meta.macroset == MACROSET_MAN)
1.302 schwarze 1041: man_breakscope(man, ROFF_TS);
1.321 schwarze 1042: while ((span = tbl_span(tbl)) != NULL) {
1.346 schwarze 1043: n = roff_node_alloc(man, line, 0, ROFFT_TBL, TOKEN_NONE);
1.321 schwarze 1044: n->span = span;
1045: roff_node_append(man, n);
1046: n->flags |= NODE_VALID | NODE_ENDED;
1047: man->next = ROFF_NEXT_SIBLING;
1048: }
1.266 schwarze 1049: }
1050:
1051: void
1052: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1053: {
1054:
1055: /* Adjust siblings. */
1056:
1057: if (n->prev)
1058: n->prev->next = n->next;
1059: if (n->next)
1060: n->next->prev = n->prev;
1061:
1062: /* Adjust parent. */
1063:
1064: if (n->parent != NULL) {
1065: if (n->parent->child == n)
1066: n->parent->child = n->next;
1067: if (n->parent->last == n)
1068: n->parent->last = n->prev;
1069: }
1070:
1071: /* Adjust parse point. */
1072:
1073: if (man == NULL)
1074: return;
1075: if (man->last == n) {
1076: if (n->prev == NULL) {
1077: man->last = n->parent;
1078: man->next = ROFF_NEXT_CHILD;
1079: } else {
1080: man->last = n->prev;
1081: man->next = ROFF_NEXT_SIBLING;
1082: }
1083: }
1.356 schwarze 1084: if (man->meta.first == n)
1085: man->meta.first = NULL;
1.344 schwarze 1086: }
1087:
1088: void
1089: roff_node_relink(struct roff_man *man, struct roff_node *n)
1090: {
1091: roff_node_unlink(man, n);
1092: n->prev = n->next = NULL;
1093: roff_node_append(man, n);
1.266 schwarze 1094: }
1095:
1096: void
1097: roff_node_free(struct roff_node *n)
1098: {
1099:
1100: if (n->args != NULL)
1101: mdoc_argv_free(n->args);
1102: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1103: free(n->norm);
1.347 schwarze 1104: eqn_box_free(n->eqn);
1.266 schwarze 1105: free(n->string);
1.374 schwarze 1106: free(n->tag);
1.266 schwarze 1107: free(n);
1108: }
1109:
1110: void
1111: roff_node_delete(struct roff_man *man, struct roff_node *n)
1112: {
1113:
1114: while (n->child != NULL)
1115: roff_node_delete(man, n->child);
1116: roff_node_unlink(man, n);
1117: roff_node_free(n);
1.370 schwarze 1118: }
1119:
1120: int
1121: roff_node_transparent(struct roff_node *n)
1122: {
1123: if (n == NULL)
1124: return 0;
1125: if (n->type == ROFFT_COMMENT || n->flags & NODE_NOPRT)
1126: return 1;
1.373 schwarze 1127: return roff_tok_transparent(n->tok);
1128: }
1129:
1130: int
1131: roff_tok_transparent(enum roff_tok tok)
1132: {
1133: switch (tok) {
1.370 schwarze 1134: case ROFF_ft:
1135: case ROFF_ll:
1136: case ROFF_mc:
1137: case ROFF_po:
1138: case ROFF_ta:
1139: case MDOC_Db:
1140: case MDOC_Es:
1141: case MDOC_Sm:
1142: case MDOC_Tg:
1143: case MAN_DT:
1144: case MAN_UC:
1145: case MAN_PD:
1146: case MAN_AT:
1147: return 1;
1148: default:
1149: return 0;
1150: }
1151: }
1152:
1153: struct roff_node *
1154: roff_node_child(struct roff_node *n)
1155: {
1156: for (n = n->child; roff_node_transparent(n); n = n->next)
1157: continue;
1158: return n;
1159: }
1160:
1161: struct roff_node *
1162: roff_node_prev(struct roff_node *n)
1163: {
1164: do {
1165: n = n->prev;
1166: } while (roff_node_transparent(n));
1167: return n;
1168: }
1169:
1170: struct roff_node *
1171: roff_node_next(struct roff_node *n)
1172: {
1173: do {
1174: n = n->next;
1175: } while (roff_node_transparent(n));
1176: return n;
1.269 schwarze 1177: }
1178:
1179: void
1180: deroff(char **dest, const struct roff_node *n)
1181: {
1182: char *cp;
1183: size_t sz;
1184:
1.371 schwarze 1185: if (n->string == NULL) {
1.269 schwarze 1186: for (n = n->child; n != NULL; n = n->next)
1187: deroff(dest, n);
1188: return;
1189: }
1190:
1.288 schwarze 1191: /* Skip leading whitespace. */
1.269 schwarze 1192:
1.288 schwarze 1193: for (cp = n->string; *cp != '\0'; cp++) {
1.289 schwarze 1194: if (cp[0] == '\\' && cp[1] != '\0' &&
1195: strchr(" %&0^|~", cp[1]) != NULL)
1.269 schwarze 1196: cp++;
1.288 schwarze 1197: else if ( ! isspace((unsigned char)*cp))
1.269 schwarze 1198: break;
1199: }
1200:
1.289 schwarze 1201: /* Skip trailing backslash. */
1202:
1203: sz = strlen(cp);
1.290 schwarze 1204: if (sz > 0 && cp[sz - 1] == '\\')
1.289 schwarze 1205: sz--;
1206:
1.269 schwarze 1207: /* Skip trailing whitespace. */
1208:
1.289 schwarze 1209: for (; sz; sz--)
1.269 schwarze 1210: if ( ! isspace((unsigned char)cp[sz-1]))
1211: break;
1212:
1213: /* Skip empty strings. */
1214:
1215: if (sz == 0)
1216: return;
1217:
1218: if (*dest == NULL) {
1219: *dest = mandoc_strndup(cp, sz);
1220: return;
1221: }
1222:
1223: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1224: free(*dest);
1225: *dest = cp;
1.266 schwarze 1226: }
1227:
1228: /* --- main functions of the roff parser ---------------------------------- */
1229:
1.388 schwarze 1230: /*
1231: * Save comments preceding the title macro, for example in order to
1232: * preserve Copyright and license headers in HTML output,
1233: * provide diagnostics about RCS ids and trailing whitespace in comments,
1234: * then discard comments including preceding whitespace.
1235: * This function also handles input line continuation.
1236: */
1.387 schwarze 1237: static int
1.388 schwarze 1238: roff_parse_comment(struct roff *r, struct buf *buf, int ln, int pos, char ec)
1.387 schwarze 1239: {
1240: struct roff_node *n; /* used for header comments */
1241: const char *start; /* start of the string to process */
1242: const char *cp; /* for RCS id parsing */
1243: char *stesc; /* start of an escape sequence ('\\') */
1244: char *ep; /* end of comment string */
1245: int rcsid; /* kind of RCS id seen */
1246:
1247: for (start = stesc = buf->buf + pos;; stesc++) {
1.388 schwarze 1248: /*
1249: * XXX Ugly hack: Remove the newline character that
1250: * mparse_buf_r() appended to mark the end of input
1251: * if it is not preceded by an escape character.
1252: */
1253: if (stesc[0] == '\n') {
1254: assert(stesc[1] == '\0');
1255: stesc[0] = '\0';
1256: }
1257:
1.387 schwarze 1258: /* The line ends without continuation or comment. */
1259: if (stesc[0] == '\0')
1260: return ROFF_CONT;
1261:
1262: /* Unescaped byte: skip it. */
1.388 schwarze 1263: if (stesc[0] != ec)
1.387 schwarze 1264: continue;
1265:
1.388 schwarze 1266: /*
1267: * XXX Ugly hack: Do not attempt to append another line
1268: * if the function mparse_buf_r() appended a newline
1269: * character to indicate the end of input.
1270: */
1271: if (stesc[1] == '\n') {
1272: assert(stesc[2] == '\0');
1273: stesc[0] = '\0';
1274: return ROFF_CONT;
1275: }
1276:
1277: /*
1278: * An escape character at the end of an input line
1279: * requests line continuation.
1280: */
1.387 schwarze 1281: if (stesc[1] == '\0') {
1282: stesc[0] = '\0';
1283: return ROFF_IGN | ROFF_APPEND;
1284: }
1285:
1286: /* Found a comment: process it. */
1287: if (stesc[1] == '"' || stesc[1] == '#')
1288: break;
1289:
1290: /* Escaped escape character: skip them both. */
1.388 schwarze 1291: if (stesc[1] == ec)
1.387 schwarze 1292: stesc++;
1293: }
1294:
1295: /* Look for an RCS id in the comment. */
1296:
1297: rcsid = 0;
1298: if ((cp = strstr(stesc + 2, "$" "OpenBSD")) != NULL) {
1299: rcsid = 1 << MANDOC_OS_OPENBSD;
1300: cp += 8;
1301: } else if ((cp = strstr(stesc + 2, "$" "NetBSD")) != NULL) {
1302: rcsid = 1 << MANDOC_OS_NETBSD;
1303: cp += 7;
1304: }
1305: if (cp != NULL && isalnum((unsigned char)*cp) == 0 &&
1306: strchr(cp, '$') != NULL) {
1307: if (r->man->meta.rcsids & rcsid)
1308: mandoc_msg(MANDOCERR_RCS_REP, ln,
1309: (int)(stesc - buf->buf) + 2, "%s", stesc + 1);
1310: r->man->meta.rcsids |= rcsid;
1311: }
1312:
1313: /* Warn about trailing whitespace at the end of the comment. */
1314:
1315: ep = strchr(stesc + 2, '\0') - 1;
1316: if (*ep == '\n')
1317: *ep-- = '\0';
1318: if (*ep == ' ' || *ep == '\t')
1319: mandoc_msg(MANDOCERR_SPACE_EOL,
1320: ln, (int)(ep - buf->buf), NULL);
1321:
1322: /* Save comments preceding the title macro in the syntax tree. */
1323:
1324: if (r->options & MPARSE_COMMENT) {
1325: while (*ep == ' ' || *ep == '\t')
1326: ep--;
1327: ep[1] = '\0';
1328: n = roff_node_alloc(r->man, ln, stesc + 1 - buf->buf,
1329: ROFFT_COMMENT, TOKEN_NONE);
1330: n->string = mandoc_strdup(stesc + 2);
1331: roff_node_append(r->man, n);
1332: n->flags |= NODE_VALID | NODE_ENDED;
1333: r->man->next = ROFF_NEXT_SIBLING;
1334: }
1335:
1336: /* The comment requests line continuation. */
1337:
1338: if (stesc[1] == '#') {
1339: *stesc = '\0';
1340: return ROFF_IGN | ROFF_APPEND;
1341: }
1342:
1343: /* Discard the comment including preceding whitespace. */
1344:
1345: while (stesc > start && stesc[-1] == ' ' &&
1346: (stesc == start + 1 || stesc[-2] != '\\'))
1347: stesc--;
1348: *stesc = '\0';
1349: return ROFF_CONT;
1350: }
1351:
1.94 kristaps 1352: /*
1.355 schwarze 1353: * In the current line, expand escape sequences that produce parsable
1354: * input text. Also check the syntax of the remaining escape sequences,
1355: * which typically produce output glyphs or change formatter state.
1.154 kristaps 1356: */
1.340 schwarze 1357: static int
1.388 schwarze 1358: roff_expand(struct roff *r, struct buf *buf, int ln, int pos, char ec)
1.94 kristaps 1359: {
1.388 schwarze 1360: char ubuf[24]; /* buffer to print a number */
1361: struct mctx *ctx; /* current macro call context */
1362: const char *res; /* the string to be pasted */
1363: const char *src; /* source for copying */
1364: char *dst; /* destination for copying */
1.399 ! schwarze 1365: enum mandoc_esc subtype; /* return value from roff_escape */
1.388 schwarze 1366: int iesc; /* index of leading escape char */
1367: int inam; /* index of the escape name */
1368: int iarg; /* index beginning the argument */
1369: int iendarg; /* index right after the argument */
1370: int iend; /* index right after the sequence */
1.393 schwarze 1371: int isrc, idst; /* to reduce \\ and \. in names */
1.388 schwarze 1372: int deftype; /* type of definition to paste */
1373: int argi; /* macro argument index */
1374: int quote_args; /* true for \\$@, false for \\$* */
1375: int asz; /* length of the replacement */
1376: int rsz; /* length of the rest of the string */
1377: int npos; /* position in numeric expression */
1.181 schwarze 1378: int expand_count; /* to avoid infinite loops */
1.303 schwarze 1379:
1.170 schwarze 1380: expand_count = 0;
1.388 schwarze 1381: while (buf->buf[pos] != '\0') {
1.170 schwarze 1382:
1.388 schwarze 1383: /*
1384: * Skip plain ASCII characters.
1385: * If we have a non-standard escape character,
1386: * escape literal backslashes because all processing in
1387: * subsequent functions uses the standard escaping rules.
1388: */
1.205 schwarze 1389:
1.388 schwarze 1390: if (buf->buf[pos] != ec) {
1.397 schwarze 1391: if (buf->buf[pos] == '\\') {
1.388 schwarze 1392: roff_expand_patch(buf, pos, "\\e", pos + 1);
1393: pos++;
1.303 schwarze 1394: }
1.388 schwarze 1395: pos++;
1.205 schwarze 1396: continue;
1.303 schwarze 1397: }
1.205 schwarze 1398:
1.388 schwarze 1399: /*
1400: * Parse escape sequences,
1401: * issue diagnostic messages when appropriate,
1402: * and skip sequences that do not need expansion.
1403: * If we have a non-standard escape character, translate
1404: * it to backslashes and translate backslashes to \e.
1405: */
1.205 schwarze 1406:
1.392 schwarze 1407: if (roff_escape(buf->buf, ln, pos, &iesc, &inam,
1408: &iarg, &iendarg, &iend) != ESCAPE_EXPAND) {
1.388 schwarze 1409: while (pos < iend) {
1410: if (buf->buf[pos] == ec) {
1411: buf->buf[pos] = '\\';
1412: if (pos + 1 < iend)
1413: pos++;
1414: } else if (buf->buf[pos] == '\\') {
1415: roff_expand_patch(buf,
1416: pos, "\\e", pos + 1);
1417: pos++;
1418: iend++;
1419: }
1420: pos++;
1.352 schwarze 1421: }
1.205 schwarze 1422: continue;
1.152 kristaps 1423: }
1.388 schwarze 1424:
1.393 schwarze 1425: /* Reduce \\ and \. in names. */
1426:
1427: if (buf->buf[inam] == '*' || buf->buf[inam] == 'n') {
1428: isrc = idst = iarg;
1429: while (isrc < iendarg) {
1430: if (isrc + 1 < iendarg &&
1431: buf->buf[isrc] == '\\' &&
1432: (buf->buf[isrc + 1] == '\\' ||
1433: buf->buf[isrc + 1] == '.'))
1434: isrc++;
1435: buf->buf[idst++] = buf->buf[isrc++];
1436: }
1437: iendarg -= isrc - idst;
1438: }
1439:
1.388 schwarze 1440: /* Handle expansion. */
1441:
1442: res = NULL;
1443: switch (buf->buf[inam]) {
1444: case '*':
1445: if (iendarg == iarg)
1.206 schwarze 1446: break;
1.388 schwarze 1447: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1448: if ((res = roff_getstrn(r, buf->buf + iarg,
1449: iendarg - iarg, &deftype)) != NULL)
1.206 schwarze 1450: break;
1.94 kristaps 1451:
1.388 schwarze 1452: /*
1.396 schwarze 1453: * If not overridden,
1.388 schwarze 1454: * let \*(.T through to the formatters.
1455: */
1.94 kristaps 1456:
1.388 schwarze 1457: if (iendarg - iarg == 2 &&
1458: buf->buf[iarg] == '.' &&
1459: buf->buf[iarg + 1] == 'T') {
1460: roff_setstrn(&r->strtab, ".T", 2, NULL, 0, 0);
1461: pos = iend;
1.253 schwarze 1462: continue;
1463: }
1.94 kristaps 1464:
1.388 schwarze 1465: mandoc_msg(MANDOCERR_STR_UNDEF, ln, iesc,
1466: "%.*s", iendarg - iarg, buf->buf + iarg);
1467: break;
1.108 schwarze 1468:
1.339 schwarze 1469: case '$':
1470: if (r->mstackpos < 0) {
1.388 schwarze 1471: mandoc_msg(MANDOCERR_ARG_UNDEF, ln, iesc,
1472: "%.*s", iend - iesc, buf->buf + iesc);
1.339 schwarze 1473: break;
1474: }
1475: ctx = r->mstack + r->mstackpos;
1.388 schwarze 1476: argi = buf->buf[iarg] - '1';
1477: if (argi >= 0 && argi <= 8) {
1478: if (argi < ctx->argc)
1479: res = ctx->argv[argi];
1.339 schwarze 1480: break;
1481: }
1.388 schwarze 1482: if (buf->buf[iarg] == '*')
1.339 schwarze 1483: quote_args = 0;
1.388 schwarze 1484: else if (buf->buf[iarg] == '@')
1.339 schwarze 1485: quote_args = 1;
1486: else {
1.388 schwarze 1487: mandoc_msg(MANDOCERR_ARG_NONUM, ln, iesc,
1488: "%.*s", iend - iesc, buf->buf + iesc);
1.339 schwarze 1489: break;
1490: }
1491: asz = 0;
1.388 schwarze 1492: for (argi = 0; argi < ctx->argc; argi++) {
1493: if (argi)
1.339 schwarze 1494: asz++; /* blank */
1495: if (quote_args)
1496: asz += 2; /* quotes */
1.388 schwarze 1497: asz += strlen(ctx->argv[argi]);
1.339 schwarze 1498: }
1.388 schwarze 1499: if (asz != iend - iesc) {
1500: rsz = buf->sz - iend;
1501: if (asz < iend - iesc)
1502: memmove(buf->buf + iesc + asz,
1503: buf->buf + iend, rsz);
1504: buf->sz = iesc + asz + rsz;
1505: buf->buf = mandoc_realloc(buf->buf, buf->sz);
1506: if (asz > iend - iesc)
1507: memmove(buf->buf + iesc + asz,
1508: buf->buf + iend, rsz);
1.339 schwarze 1509: }
1.388 schwarze 1510: dst = buf->buf + iesc;
1511: for (argi = 0; argi < ctx->argc; argi++) {
1512: if (argi)
1513: *dst++ = ' ';
1.339 schwarze 1514: if (quote_args)
1.388 schwarze 1515: *dst++ = '"';
1516: src = ctx->argv[argi];
1517: while (*src != '\0')
1518: *dst++ = *src++;
1.339 schwarze 1519: if (quote_args)
1.388 schwarze 1520: *dst++ = '"';
1.339 schwarze 1521: }
1522: continue;
1.391 schwarze 1523: case 'A':
1524: ubuf[0] = iendarg > iarg ? '1' : '0';
1525: ubuf[1] = '\0';
1526: res = ubuf;
1527: break;
1.207 schwarze 1528: case 'B':
1.206 schwarze 1529: npos = 0;
1.388 schwarze 1530: ubuf[0] = iendarg > iarg && iend > iendarg &&
1531: roff_evalnum(r, ln, buf->buf + iarg, &npos,
1532: NULL, ROFFNUM_SCALE) &&
1533: npos == iendarg - iarg ? '1' : '0';
1.206 schwarze 1534: ubuf[1] = '\0';
1.388 schwarze 1535: res = ubuf;
1.206 schwarze 1536: break;
1.389 schwarze 1537: case 'V':
1538: mandoc_msg(MANDOCERR_UNSUPP, ln, iesc,
1539: "%.*s", iend - iesc, buf->buf + iesc);
1540: roff_expand_patch(buf, iendarg, "}", iend);
1541: roff_expand_patch(buf, iesc, "${", iarg);
1542: continue;
1.390 schwarze 1543: case 'g':
1544: break;
1.207 schwarze 1545: case 'n':
1.388 schwarze 1546: if (iendarg > iarg)
1.218 schwarze 1547: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.388 schwarze 1548: roff_getregn(r, buf->buf + iarg,
1549: iendarg - iarg, buf->buf[inam + 1]));
1.218 schwarze 1550: else
1551: ubuf[0] = '\0';
1.388 schwarze 1552: res = ubuf;
1.206 schwarze 1553: break;
1.207 schwarze 1554: case 'w':
1.399 ! schwarze 1555: rsz = 0;
! 1556: subtype = ESCAPE_UNDEF;
! 1557: while (iarg < iendarg) {
! 1558: asz = subtype == ESCAPE_SKIPCHAR ? 0 : 1;
! 1559: if (buf->buf[iarg] != '\\') {
! 1560: rsz += asz;
! 1561: iarg++;
! 1562: continue;
! 1563: }
! 1564: switch ((subtype = roff_escape(buf->buf, 0,
! 1565: iarg, NULL, NULL, NULL, NULL, &iarg))) {
! 1566: case ESCAPE_SPECIAL:
! 1567: case ESCAPE_NUMBERED:
! 1568: case ESCAPE_UNICODE:
! 1569: case ESCAPE_OVERSTRIKE:
! 1570: case ESCAPE_UNDEF:
! 1571: break;
! 1572: case ESCAPE_DEVICE:
! 1573: asz *= 8;
! 1574: break;
! 1575: case ESCAPE_EXPAND:
! 1576: abort();
! 1577: default:
! 1578: continue;
! 1579: }
! 1580: rsz += asz;
! 1581: }
! 1582: (void)snprintf(ubuf, sizeof(ubuf), "%d", rsz * 24);
1.388 schwarze 1583: res = ubuf;
1584: break;
1585: default:
1.206 schwarze 1586: break;
1587: }
1.388 schwarze 1588: if (res == NULL)
1.142 kristaps 1589: res = "";
1.388 schwarze 1590: if (++expand_count > EXPAND_LIMIT ||
1591: buf->sz + strlen(res) > SHRT_MAX) {
1592: mandoc_msg(MANDOCERR_ROFFLOOP, ln, iesc, NULL);
1.277 schwarze 1593: return ROFF_IGN;
1.94 kristaps 1594: }
1.388 schwarze 1595: roff_expand_patch(buf, iesc, res, iend);
1596: }
1597: return ROFF_CONT;
1598: }
1.94 kristaps 1599:
1.388 schwarze 1600: /*
1601: * Replace the substring from the start position (inclusive)
1602: * to end position (exclusive) with the repl(acement) string.
1603: */
1604: static void
1605: roff_expand_patch(struct buf *buf, int start, const char *repl, int end)
1606: {
1607: char *nbuf;
1.108 schwarze 1608:
1.389 schwarze 1609: buf->sz = mandoc_asprintf(&nbuf, "%.*s%s%s", start, buf->buf,
1610: repl, buf->buf + end) + 1;
1.388 schwarze 1611: free(buf->buf);
1612: buf->buf = nbuf;
1.154 kristaps 1613: }
1.353 schwarze 1614:
1615: /*
1616: * Parse a quoted or unquoted roff-style request or macro argument.
1617: * Return a pointer to the parsed argument, which is either the original
1618: * pointer or advanced by one byte in case the argument is quoted.
1619: * NUL-terminate the argument in place.
1620: * Collapse pairs of quotes inside quoted arguments.
1621: * Advance the argument pointer to the next argument,
1622: * or to the NUL byte terminating the argument line.
1623: */
1624: char *
1.355 schwarze 1625: roff_getarg(struct roff *r, char **cpp, int ln, int *pos)
1.353 schwarze 1626: {
1.355 schwarze 1627: struct buf buf;
1.366 schwarze 1628: char *cp, *start;
1.355 schwarze 1629: int newesc, pairs, quoted, white;
1.353 schwarze 1630:
1631: /* Quoting can only start with a new word. */
1632: start = *cpp;
1633: quoted = 0;
1634: if ('"' == *start) {
1635: quoted = 1;
1636: start++;
1637: }
1638:
1.355 schwarze 1639: newesc = pairs = white = 0;
1.353 schwarze 1640: for (cp = start; '\0' != *cp; cp++) {
1641:
1642: /*
1643: * Move the following text left
1644: * after quoted quotes and after "\\" and "\t".
1645: */
1646: if (pairs)
1647: cp[-pairs] = cp[0];
1648:
1649: if ('\\' == cp[0]) {
1650: /*
1651: * In copy mode, translate double to single
1652: * backslashes and backslash-t to literal tabs.
1653: */
1654: switch (cp[1]) {
1655: case 'a':
1656: case 't':
1.354 schwarze 1657: cp[-pairs] = '\t';
1.355 schwarze 1658: pairs++;
1659: cp++;
1660: break;
1.353 schwarze 1661: case '\\':
1.397 schwarze 1662: cp[-pairs] = '\\';
1.355 schwarze 1663: newesc = 1;
1.353 schwarze 1664: pairs++;
1665: cp++;
1666: break;
1667: case ' ':
1668: /* Skip escaped blanks. */
1669: if (0 == quoted)
1670: cp++;
1671: break;
1672: default:
1673: break;
1674: }
1675: } else if (0 == quoted) {
1676: if (' ' == cp[0]) {
1677: /* Unescaped blanks end unquoted args. */
1678: white = 1;
1679: break;
1680: }
1681: } else if ('"' == cp[0]) {
1682: if ('"' == cp[1]) {
1683: /* Quoted quotes collapse. */
1684: pairs++;
1685: cp++;
1686: } else {
1687: /* Unquoted quotes end quoted args. */
1688: quoted = 2;
1689: break;
1690: }
1691: }
1692: }
1693:
1694: /* Quoted argument without a closing quote. */
1695: if (1 == quoted)
1696: mandoc_msg(MANDOCERR_ARG_QUOTE, ln, *pos, NULL);
1697:
1698: /* NUL-terminate this argument and move to the next one. */
1699: if (pairs)
1700: cp[-pairs] = '\0';
1701: if ('\0' != *cp) {
1702: *cp++ = '\0';
1703: while (' ' == *cp)
1704: cp++;
1705: }
1706: *pos += (int)(cp - start) + (quoted ? 1 : 0);
1707: *cpp = cp;
1708:
1709: if ('\0' == *cp && (white || ' ' == cp[-1]))
1710: mandoc_msg(MANDOCERR_SPACE_EOL, ln, *pos, NULL);
1711:
1.355 schwarze 1712: start = mandoc_strdup(start);
1713: if (newesc == 0)
1714: return start;
1715:
1716: buf.buf = start;
1717: buf.sz = strlen(start) + 1;
1718: buf.next = NULL;
1.398 schwarze 1719: if (roff_expand(r, &buf, ln, 0, '\\') == ROFF_IGN) {
1.355 schwarze 1720: free(buf.buf);
1721: buf.buf = mandoc_strdup("");
1722: }
1723: return buf.buf;
1.353 schwarze 1724: }
1725:
1.154 kristaps 1726:
1727: /*
1.275 schwarze 1728: * Process text streams.
1.154 kristaps 1729: */
1.340 schwarze 1730: static int
1.305 schwarze 1731: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.154 kristaps 1732: {
1733: size_t sz;
1734: const char *start;
1.178 schwarze 1735: char *p;
1736: int isz;
1.154 kristaps 1737: enum mandoc_esc esc;
1738:
1.275 schwarze 1739: /* Spring the input line trap. */
1740:
1741: if (roffit_lines == 1) {
1742: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1743: free(buf->buf);
1744: buf->buf = p;
1745: buf->sz = isz + 1;
1746: *offs = 0;
1747: free(roffit_macro);
1748: roffit_lines = 0;
1.277 schwarze 1749: return ROFF_REPARSE;
1.275 schwarze 1750: } else if (roffit_lines > 1)
1751: --roffit_lines;
1752:
1.305 schwarze 1753: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1754: if (roffce_lines < 1) {
1755: r->man->last = roffce_node;
1756: r->man->next = ROFF_NEXT_SIBLING;
1757: roffce_lines = 0;
1758: roffce_node = NULL;
1759: } else
1760: roffce_lines--;
1761: }
1762:
1.275 schwarze 1763: /* Convert all breakable hyphens into ASCII_HYPH. */
1764:
1.238 schwarze 1765: start = p = buf->buf + pos;
1.154 kristaps 1766:
1.238 schwarze 1767: while (*p != '\0') {
1.154 kristaps 1768: sz = strcspn(p, "-\\");
1769: p += sz;
1770:
1.238 schwarze 1771: if (*p == '\0')
1.159 kristaps 1772: break;
1773:
1.238 schwarze 1774: if (*p == '\\') {
1.154 kristaps 1775: /* Skip over escapes. */
1776: p++;
1.189 schwarze 1777: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.238 schwarze 1778: if (esc == ESCAPE_ERROR)
1.154 kristaps 1779: break;
1.264 schwarze 1780: while (*p == '-')
1781: p++;
1.155 kristaps 1782: continue;
1.159 kristaps 1783: } else if (p == start) {
1.158 kristaps 1784: p++;
1.155 kristaps 1785: continue;
1.158 kristaps 1786: }
1.155 kristaps 1787:
1.171 schwarze 1788: if (isalpha((unsigned char)p[-1]) &&
1789: isalpha((unsigned char)p[1]))
1.155 kristaps 1790: *p = ASCII_HYPH;
1791: p++;
1.94 kristaps 1792: }
1.277 schwarze 1793: return ROFF_CONT;
1.94 kristaps 1794: }
1795:
1.340 schwarze 1796: int
1.377 schwarze 1797: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs, size_t len)
1.67 kristaps 1798: {
1.294 schwarze 1799: enum roff_tok t;
1.340 schwarze 1800: int e;
1.238 schwarze 1801: int pos; /* parse point */
1.243 schwarze 1802: int spos; /* saved parse point for messages */
1.238 schwarze 1803: int ppos; /* original offset in buf->buf */
1804: int ctl; /* macro line (boolean) */
1805:
1806: ppos = pos = *offs;
1.377 schwarze 1807:
1808: if (len > 80 && r->tbl == NULL && r->eqn == NULL &&
1809: (r->man->flags & ROFF_NOFILL) == 0 &&
1810: strchr(" .\\", buf->buf[pos]) == NULL &&
1811: buf->buf[pos] != r->control &&
1812: strcspn(buf->buf, " ") < 80)
1813: mandoc_msg(MANDOCERR_TEXT_LONG, ln, (int)len - 1,
1814: "%.20s...", buf->buf + pos);
1.79 kristaps 1815:
1.230 schwarze 1816: /* Handle in-line equation delimiters. */
1817:
1.236 schwarze 1818: if (r->tbl == NULL &&
1819: r->last_eqn != NULL && r->last_eqn->delim &&
1.230 schwarze 1820: (r->eqn == NULL || r->eqn_inline)) {
1.238 schwarze 1821: e = roff_eqndelim(r, buf, pos);
1.230 schwarze 1822: if (e == ROFF_REPARSE)
1.277 schwarze 1823: return e;
1.230 schwarze 1824: assert(e == ROFF_CONT);
1825: }
1826:
1.387 schwarze 1827: /* Handle comments and escape sequences. */
1828:
1829: e = roff_parse_comment(r, buf, ln, pos, r->escape);
1830: if ((e & ROFF_MASK) == ROFF_IGN)
1831: return e;
1832: assert(e == ROFF_CONT);
1.94 kristaps 1833:
1.355 schwarze 1834: e = roff_expand(r, buf, ln, pos, r->escape);
1.340 schwarze 1835: if ((e & ROFF_MASK) == ROFF_IGN)
1.277 schwarze 1836: return e;
1.238 schwarze 1837: assert(e == ROFF_CONT);
1.94 kristaps 1838:
1.238 schwarze 1839: ctl = roff_getcontrol(r, buf->buf, &pos);
1.130 kristaps 1840:
1.94 kristaps 1841: /*
1.79 kristaps 1842: * First, if a scope is open and we're not a macro, pass the
1.252 schwarze 1843: * text through the macro's filter.
1844: * Equations process all content themselves.
1845: * Tables process almost all content themselves, but we want
1846: * to warn about macros before passing it there.
1.79 kristaps 1847: */
1.74 kristaps 1848:
1.252 schwarze 1849: if (r->last != NULL && ! ctl) {
1.78 kristaps 1850: t = r->last->tok;
1.238 schwarze 1851: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.340 schwarze 1852: if ((e & ROFF_MASK) == ROFF_IGN)
1.277 schwarze 1853: return e;
1.340 schwarze 1854: e &= ~ROFF_MASK;
1855: } else
1856: e = ROFF_IGN;
1.319 schwarze 1857: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1858: eqn_read(r->eqn, buf->buf + ppos);
1.340 schwarze 1859: return e;
1.319 schwarze 1860: }
1.321 schwarze 1861: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1862: tbl_read(r->tbl, ln, buf->buf, ppos);
1.346 schwarze 1863: roff_addtbl(r->man, ln, r->tbl);
1.340 schwarze 1864: return e;
1.321 schwarze 1865: }
1.367 schwarze 1866: if ( ! ctl) {
1867: r->options &= ~MPARSE_COMMENT;
1.340 schwarze 1868: return roff_parsetext(r, buf, pos, offs) | e;
1.367 schwarze 1869: }
1.228 schwarze 1870:
1871: /* Skip empty request lines. */
1872:
1.238 schwarze 1873: if (buf->buf[pos] == '"') {
1.350 schwarze 1874: mandoc_msg(MANDOCERR_COMMENT_BAD, ln, pos, NULL);
1.277 schwarze 1875: return ROFF_IGN;
1.238 schwarze 1876: } else if (buf->buf[pos] == '\0')
1.277 schwarze 1877: return ROFF_IGN;
1.67 kristaps 1878:
1.79 kristaps 1879: /*
1880: * If a scope is open, go to the child handler for that macro,
1881: * as it may want to preprocess before doing anything with it.
1882: */
1.78 kristaps 1883:
1.79 kristaps 1884: if (r->last) {
1885: t = r->last->tok;
1.277 schwarze 1886: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1887: }
1.78 kristaps 1888:
1.367 schwarze 1889: r->options &= ~MPARSE_COMMENT;
1.243 schwarze 1890: spos = pos;
1891: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.386 schwarze 1892: return roff_req_or_macro(r, t, buf, ln, spos, pos, offs);
1893: }
1894:
1895: /*
1896: * Handle a new request or macro.
1897: * May be called outside any scope or from inside a conditional scope.
1898: */
1899: static int
1900: roff_req_or_macro(ROFF_ARGS) {
1.243 schwarze 1901:
1.386 schwarze 1902: /* For now, tables ignore most macros and some request. */
1.243 schwarze 1903:
1.386 schwarze 1904: if (r->tbl != NULL && (tok == TOKEN_NONE || tok == ROFF_TS ||
1905: tok == ROFF_br || tok == ROFF_ce || tok == ROFF_rj ||
1906: tok == ROFF_sp)) {
1.350 schwarze 1907: mandoc_msg(MANDOCERR_TBLMACRO,
1.386 schwarze 1908: ln, ppos, "%s", buf->buf + ppos);
1909: if (tok != TOKEN_NONE)
1.277 schwarze 1910: return ROFF_IGN;
1.257 schwarze 1911: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1912: pos++;
1.291 schwarze 1913: while (buf->buf[pos] == ' ')
1.257 schwarze 1914: pos++;
1.321 schwarze 1915: tbl_read(r->tbl, ln, buf->buf, pos);
1.346 schwarze 1916: roff_addtbl(r->man, ln, r->tbl);
1.321 schwarze 1917: return ROFF_IGN;
1.243 schwarze 1918: }
1919:
1.305 schwarze 1920: /* For now, let high level macros abort .ce mode. */
1921:
1.386 schwarze 1922: if (roffce_node != NULL &&
1923: (tok == TOKEN_NONE || tok == ROFF_Dd || tok == ROFF_EQ ||
1924: tok == ROFF_TH || tok == ROFF_TS)) {
1.305 schwarze 1925: r->man->last = roffce_node;
1926: r->man->next = ROFF_NEXT_SIBLING;
1927: roffce_lines = 0;
1928: roffce_node = NULL;
1929: }
1930:
1.79 kristaps 1931: /*
1.243 schwarze 1932: * This is neither a roff request nor a user-defined macro.
1933: * Let the standard macro set parsers handle it.
1.79 kristaps 1934: */
1.67 kristaps 1935:
1.386 schwarze 1936: if (tok == TOKEN_NONE)
1.277 schwarze 1937: return ROFF_CONT;
1.243 schwarze 1938:
1.386 schwarze 1939: /* Execute a roff request or a user-defined macro. */
1.67 kristaps 1940:
1.386 schwarze 1941: return (*roffs[tok].proc)(r, tok, buf, ln, ppos, pos, offs);
1.74 kristaps 1942: }
1943:
1.339 schwarze 1944: /*
1945: * Internal interface function to tell the roff parser that execution
1946: * of the current macro ended. This is required because macro
1947: * definitions usually do not end with a .return request.
1948: */
1949: void
1950: roff_userret(struct roff *r)
1951: {
1952: struct mctx *ctx;
1953: int i;
1954:
1955: assert(r->mstackpos >= 0);
1956: ctx = r->mstack + r->mstackpos;
1957: for (i = 0; i < ctx->argc; i++)
1958: free(ctx->argv[i]);
1959: ctx->argc = 0;
1960: r->mstackpos--;
1961: }
1962:
1.117 kristaps 1963: void
1.74 kristaps 1964: roff_endparse(struct roff *r)
1965: {
1.321 schwarze 1966: if (r->last != NULL)
1.350 schwarze 1967: mandoc_msg(MANDOCERR_BLK_NOEND, r->last->line,
1968: r->last->col, "%s", roff_name[r->last->tok]);
1.117 kristaps 1969:
1.321 schwarze 1970: if (r->eqn != NULL) {
1.350 schwarze 1971: mandoc_msg(MANDOCERR_BLK_NOEND,
1.319 schwarze 1972: r->eqn->node->line, r->eqn->node->pos, "EQ");
1973: eqn_parse(r->eqn);
1974: r->eqn = NULL;
1.125 kristaps 1975: }
1976:
1.321 schwarze 1977: if (r->tbl != NULL) {
1.346 schwarze 1978: tbl_end(r->tbl, 1);
1.321 schwarze 1979: r->tbl = NULL;
1.117 kristaps 1980: }
1.67 kristaps 1981: }
1982:
1983: /*
1.386 schwarze 1984: * Parse the request or macro name at buf[*pos].
1985: * Return ROFF_RENAMED, ROFF_USERDEF, or a ROFF_* token value.
1986: * For empty, undefined, mdoc(7), and man(7) macros, return TOKEN_NONE.
1987: * As a side effect, set r->current_string to the definition or to NULL.
1.67 kristaps 1988: */
1.294 schwarze 1989: static enum roff_tok
1.214 schwarze 1990: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.67 kristaps 1991: {
1.214 schwarze 1992: char *cp;
1.106 kristaps 1993: const char *mac;
1994: size_t maclen;
1.315 schwarze 1995: int deftype;
1.294 schwarze 1996: enum roff_tok t;
1.67 kristaps 1997:
1.214 schwarze 1998: cp = buf + *pos;
1999:
2000: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.294 schwarze 2001: return TOKEN_NONE;
1.67 kristaps 2002:
1.214 schwarze 2003: mac = cp;
2004: maclen = roff_getname(r, &cp, ln, ppos);
1.67 kristaps 2005:
1.315 schwarze 2006: deftype = ROFFDEF_USER | ROFFDEF_REN;
2007: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
2008: switch (deftype) {
2009: case ROFFDEF_USER:
2010: t = ROFF_USERDEF;
2011: break;
2012: case ROFFDEF_REN:
2013: t = ROFF_RENAMED;
2014: break;
2015: default:
2016: t = roffhash_find(r->reqtab, mac, maclen);
2017: break;
2018: }
1.294 schwarze 2019: if (t != TOKEN_NONE)
1.214 schwarze 2020: *pos = cp - buf;
1.325 schwarze 2021: else if (deftype == ROFFDEF_UNDEF) {
2022: /* Using an undefined macro defines it to be empty. */
2023: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
2024: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
2025: }
1.277 schwarze 2026: return t;
1.67 kristaps 2027: }
2028:
1.266 schwarze 2029: /* --- handling of request blocks ----------------------------------------- */
2030:
1.375 schwarze 2031: /*
2032: * Close a macro definition block or an "ignore" block.
2033: */
1.340 schwarze 2034: static int
1.76 kristaps 2035: roff_cblock(ROFF_ARGS)
1.67 kristaps 2036: {
1.375 schwarze 2037: int rr;
1.79 kristaps 2038:
1.238 schwarze 2039: if (r->last == NULL) {
1.350 schwarze 2040: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.277 schwarze 2041: return ROFF_IGN;
1.76 kristaps 2042: }
1.67 kristaps 2043:
1.81 kristaps 2044: switch (r->last->tok) {
1.207 schwarze 2045: case ROFF_am:
2046: case ROFF_ami:
2047: case ROFF_de:
2048: case ROFF_dei:
2049: case ROFF_ig:
1.81 kristaps 2050: break;
1.375 schwarze 2051: case ROFF_am1:
2052: case ROFF_de1:
2053: /* Remapped in roff_block(). */
2054: abort();
1.81 kristaps 2055: default:
1.350 schwarze 2056: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.277 schwarze 2057: return ROFF_IGN;
1.76 kristaps 2058: }
1.67 kristaps 2059:
1.375 schwarze 2060: roffnode_pop(r);
2061: roffnode_cleanscope(r);
2062:
2063: /*
2064: * If a conditional block with braces is still open,
2065: * check for "\}" block end markers.
2066: */
2067:
2068: if (r->last != NULL && r->last->endspan < 0) {
2069: rr = 1; /* If arguments follow "\}", warn about them. */
2070: roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
2071: }
2072:
1.238 schwarze 2073: if (buf->buf[pos] != '\0')
1.350 schwarze 2074: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.238 schwarze 2075: ".. %s", buf->buf + pos);
1.71 kristaps 2076:
1.277 schwarze 2077: return ROFF_IGN;
1.67 kristaps 2078: }
2079:
1.364 schwarze 2080: /*
2081: * Pop all nodes ending at the end of the current input line.
2082: * Return the number of loops ended.
2083: */
1.340 schwarze 2084: static int
1.76 kristaps 2085: roffnode_cleanscope(struct roff *r)
1.67 kristaps 2086: {
1.340 schwarze 2087: int inloop;
1.67 kristaps 2088:
1.340 schwarze 2089: inloop = 0;
1.375 schwarze 2090: while (r->last != NULL && r->last->endspan > 0) {
1.173 schwarze 2091: if (--r->last->endspan != 0)
1.76 kristaps 2092: break;
1.340 schwarze 2093: inloop += roffnode_pop(r);
1.76 kristaps 2094: }
1.340 schwarze 2095: return inloop;
1.67 kristaps 2096: }
2097:
1.364 schwarze 2098: /*
1.375 schwarze 2099: * Handle the closing "\}" of a conditional block.
1.364 schwarze 2100: * Apart from generating warnings, this only pops nodes.
2101: * Return the number of loops ended.
2102: */
1.340 schwarze 2103: static int
1.195 schwarze 2104: roff_ccond(struct roff *r, int ln, int ppos)
1.74 kristaps 2105: {
1.76 kristaps 2106: if (NULL == r->last) {
1.350 schwarze 2107: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 2108: return 0;
1.76 kristaps 2109: }
2110:
1.82 kristaps 2111: switch (r->last->tok) {
1.207 schwarze 2112: case ROFF_el:
2113: case ROFF_ie:
2114: case ROFF_if:
1.340 schwarze 2115: case ROFF_while:
1.82 kristaps 2116: break;
2117: default:
1.350 schwarze 2118: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 2119: return 0;
1.75 kristaps 2120: }
2121:
1.76 kristaps 2122: if (r->last->endspan > -1) {
1.350 schwarze 2123: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 2124: return 0;
1.76 kristaps 2125: }
2126:
1.340 schwarze 2127: return roffnode_pop(r) + roffnode_cleanscope(r);
1.76 kristaps 2128: }
2129:
1.340 schwarze 2130: static int
1.80 kristaps 2131: roff_block(ROFF_ARGS)
1.76 kristaps 2132: {
1.315 schwarze 2133: const char *name, *value;
2134: char *call, *cp, *iname, *rname;
2135: size_t csz, namesz, rsz;
2136: int deftype;
1.106 kristaps 2137:
1.220 schwarze 2138: /* Ignore groff compatibility mode for now. */
1.76 kristaps 2139:
1.238 schwarze 2140: if (tok == ROFF_de1)
1.220 schwarze 2141: tok = ROFF_de;
1.251 schwarze 2142: else if (tok == ROFF_dei1)
2143: tok = ROFF_dei;
1.238 schwarze 2144: else if (tok == ROFF_am1)
1.220 schwarze 2145: tok = ROFF_am;
1.251 schwarze 2146: else if (tok == ROFF_ami1)
2147: tok = ROFF_ami;
1.220 schwarze 2148:
2149: /* Parse the macro name argument. */
2150:
1.238 schwarze 2151: cp = buf->buf + pos;
2152: if (tok == ROFF_ig) {
1.220 schwarze 2153: iname = NULL;
2154: namesz = 0;
2155: } else {
2156: iname = cp;
2157: namesz = roff_getname(r, &cp, ln, ppos);
2158: iname[namesz] = '\0';
2159: }
1.107 kristaps 2160:
1.220 schwarze 2161: /* Resolve the macro name argument if it is indirect. */
1.107 kristaps 2162:
1.238 schwarze 2163: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 2164: deftype = ROFFDEF_USER;
2165: name = roff_getstrn(r, iname, namesz, &deftype);
2166: if (name == NULL) {
1.350 schwarze 2167: mandoc_msg(MANDOCERR_STR_UNDEF,
2168: ln, (int)(iname - buf->buf),
1.220 schwarze 2169: "%.*s", (int)namesz, iname);
2170: namesz = 0;
2171: } else
2172: namesz = strlen(name);
2173: } else
2174: name = iname;
1.107 kristaps 2175:
1.238 schwarze 2176: if (namesz == 0 && tok != ROFF_ig) {
1.350 schwarze 2177: mandoc_msg(MANDOCERR_REQ_EMPTY,
2178: ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2179: return ROFF_IGN;
1.220 schwarze 2180: }
1.80 kristaps 2181:
1.106 kristaps 2182: roffnode_push(r, tok, name, ln, ppos);
2183:
2184: /*
2185: * At the beginning of a `de' macro, clear the existing string
2186: * with the same name, if there is one. New content will be
1.193 schwarze 2187: * appended from roff_block_text() in multiline mode.
1.106 kristaps 2188: */
1.107 kristaps 2189:
1.311 schwarze 2190: if (tok == ROFF_de || tok == ROFF_dei) {
1.213 schwarze 2191: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.311 schwarze 2192: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.315 schwarze 2193: } else if (tok == ROFF_am || tok == ROFF_ami) {
2194: deftype = ROFFDEF_ANY;
2195: value = roff_getstrn(r, iname, namesz, &deftype);
2196: switch (deftype) { /* Before appending, ... */
2197: case ROFFDEF_PRE: /* copy predefined to user-defined. */
2198: roff_setstrn(&r->strtab, name, namesz,
2199: value, strlen(value), 0);
2200: break;
2201: case ROFFDEF_REN: /* call original standard macro. */
2202: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2203: (int)strlen(value), value);
2204: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2205: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
2206: free(call);
2207: break;
2208: case ROFFDEF_STD: /* rename and call standard macro. */
2209: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
2210: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
2211: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2212: (int)rsz, rname);
2213: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2214: free(call);
2215: free(rname);
2216: break;
2217: default:
2218: break;
2219: }
1.311 schwarze 2220: }
1.76 kristaps 2221:
1.238 schwarze 2222: if (*cp == '\0')
1.277 schwarze 2223: return ROFF_IGN;
1.78 kristaps 2224:
1.220 schwarze 2225: /* Get the custom end marker. */
1.107 kristaps 2226:
1.220 schwarze 2227: iname = cp;
1.213 schwarze 2228: namesz = roff_getname(r, &cp, ln, ppos);
1.220 schwarze 2229:
2230: /* Resolve the end marker if it is indirect. */
2231:
1.238 schwarze 2232: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 2233: deftype = ROFFDEF_USER;
2234: name = roff_getstrn(r, iname, namesz, &deftype);
2235: if (name == NULL) {
1.350 schwarze 2236: mandoc_msg(MANDOCERR_STR_UNDEF,
2237: ln, (int)(iname - buf->buf),
1.220 schwarze 2238: "%.*s", (int)namesz, iname);
2239: namesz = 0;
2240: } else
2241: namesz = strlen(name);
2242: } else
2243: name = iname;
2244:
1.213 schwarze 2245: if (namesz)
2246: r->last->end = mandoc_strndup(name, namesz);
1.78 kristaps 2247:
1.238 schwarze 2248: if (*cp != '\0')
1.350 schwarze 2249: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.295 schwarze 2250: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.74 kristaps 2251:
1.277 schwarze 2252: return ROFF_IGN;
1.78 kristaps 2253: }
2254:
1.340 schwarze 2255: static int
1.80 kristaps 2256: roff_block_sub(ROFF_ARGS)
1.79 kristaps 2257: {
1.294 schwarze 2258: enum roff_tok t;
1.79 kristaps 2259: int i, j;
2260:
2261: /*
1.385 schwarze 2262: * If a custom end marker is a user-defined or predefined macro
2263: * or a request, interpret it.
1.79 kristaps 2264: */
2265:
2266: if (r->last->end) {
1.130 kristaps 2267: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.238 schwarze 2268: if (buf->buf[i] != r->last->end[j])
1.79 kristaps 2269: break;
2270:
1.238 schwarze 2271: if (r->last->end[j] == '\0' &&
2272: (buf->buf[i] == '\0' ||
2273: buf->buf[i] == ' ' ||
2274: buf->buf[i] == '\t')) {
1.79 kristaps 2275: roffnode_pop(r);
2276: roffnode_cleanscope(r);
2277:
1.238 schwarze 2278: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.130 kristaps 2279: i++;
2280:
2281: pos = i;
1.238 schwarze 2282: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.294 schwarze 2283: TOKEN_NONE)
1.277 schwarze 2284: return ROFF_RERUN;
2285: return ROFF_IGN;
1.79 kristaps 2286: }
2287: }
2288:
1.385 schwarze 2289: /* Handle the standard end marker. */
1.79 kristaps 2290:
1.238 schwarze 2291: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.385 schwarze 2292: if (t == ROFF_cblock)
2293: return roff_cblock(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 2294:
1.385 schwarze 2295: /* Not an end marker, so append the line to the block. */
1.79 kristaps 2296:
1.385 schwarze 2297: if (tok != ROFF_ig)
2298: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
2299: return ROFF_IGN;
1.79 kristaps 2300: }
2301:
1.340 schwarze 2302: static int
1.80 kristaps 2303: roff_block_text(ROFF_ARGS)
1.78 kristaps 2304: {
2305:
1.238 schwarze 2306: if (tok != ROFF_ig)
2307: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.106 kristaps 2308:
1.277 schwarze 2309: return ROFF_IGN;
1.78 kristaps 2310: }
2311:
1.375 schwarze 2312: /*
2313: * Check for a closing "\}" and handle it.
2314: * In this function, the final "int *offs" argument is used for
2315: * different purposes than elsewhere:
2316: * Input: *offs == 0: caller wants to discard arguments following \}
2317: * *offs == 1: caller wants to preserve text following \}
2318: * Output: *offs = 0: tell caller to discard input line
2319: * *offs = 1: tell caller to use input line
2320: */
1.340 schwarze 2321: static int
1.375 schwarze 2322: roff_cond_checkend(ROFF_ARGS)
1.82 kristaps 2323: {
1.340 schwarze 2324: char *ep;
2325: int endloop, irc, rr;
1.82 kristaps 2326:
1.340 schwarze 2327: irc = ROFF_IGN;
1.82 kristaps 2328: rr = r->last->rule;
1.340 schwarze 2329: endloop = tok != ROFF_while ? ROFF_IGN :
2330: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2331: if (roffnode_cleanscope(r))
2332: irc |= endloop;
1.144 kristaps 2333:
1.196 schwarze 2334: /*
1.375 schwarze 2335: * If "\}" occurs on a macro line without a preceding macro or
2336: * a text line contains nothing else, drop the line completely.
1.196 schwarze 2337: */
2338:
1.238 schwarze 2339: ep = buf->buf + pos;
1.375 schwarze 2340: if (ep[0] == '\\' && ep[1] == '}' && (ep[2] == '\0' || *offs == 0))
1.198 schwarze 2341: rr = 0;
1.196 schwarze 2342:
1.343 schwarze 2343: /*
1.375 schwarze 2344: * The closing delimiter "\}" rewinds the conditional scope
1.343 schwarze 2345: * but is otherwise ignored when interpreting the line.
2346: */
1.144 kristaps 2347:
1.238 schwarze 2348: while ((ep = strchr(ep, '\\')) != NULL) {
1.318 schwarze 2349: switch (ep[1]) {
2350: case '}':
1.376 schwarze 2351: if (ep[2] == '\0')
2352: ep[0] = '\0';
2353: else if (rr)
1.375 schwarze 2354: ep[1] = '&';
2355: else
2356: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1.340 schwarze 2357: if (roff_ccond(r, ln, ep - buf->buf))
2358: irc |= endloop;
1.318 schwarze 2359: break;
2360: case '\0':
2361: ++ep;
2362: break;
2363: default:
2364: ep += 2;
2365: break;
1.197 schwarze 2366: }
1.177 schwarze 2367: }
1.375 schwarze 2368: *offs = rr;
2369: return irc;
2370: }
1.318 schwarze 2371:
1.375 schwarze 2372: /*
2373: * Parse and process a request or macro line in conditional scope.
2374: */
2375: static int
2376: roff_cond_sub(ROFF_ARGS)
2377: {
2378: struct roffnode *bl;
1.386 schwarze 2379: int irc, rr, spos;
1.375 schwarze 2380: enum roff_tok t;
2381:
2382: rr = 0; /* If arguments follow "\}", skip them. */
2383: irc = roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
1.386 schwarze 2384: spos = pos;
1.368 schwarze 2385: t = roff_parse(r, buf->buf, &pos, ln, ppos);
2386:
1.318 schwarze 2387: /*
1.386 schwarze 2388: * Handle requests and macros if the conditional evaluated
2389: * to true or if they are structurally required.
2390: * The .break request is always handled specially.
1.318 schwarze 2391: */
2392:
1.364 schwarze 2393: if (t == ROFF_break) {
2394: if (irc & ROFF_LOOPMASK)
2395: irc = ROFF_IGN | ROFF_LOOPEXIT;
2396: else if (rr) {
2397: for (bl = r->last; bl != NULL; bl = bl->parent) {
2398: bl->rule = 0;
2399: if (bl->tok == ROFF_while)
2400: break;
2401: }
2402: }
1.386 schwarze 2403: } else if (rr || (t < TOKEN_NONE && roffs[t].flags & ROFFMAC_STRUCT)) {
2404: irc |= roff_req_or_macro(r, t, buf, ln, spos, pos, offs);
1.383 schwarze 2405: if (irc & ROFF_WHILE)
2406: irc &= ~(ROFF_LOOPCONT | ROFF_LOOPEXIT);
1.386 schwarze 2407: }
1.340 schwarze 2408: return irc;
1.82 kristaps 2409: }
2410:
1.375 schwarze 2411: /*
2412: * Parse and process a text line in conditional scope.
2413: */
1.340 schwarze 2414: static int
1.82 kristaps 2415: roff_cond_text(ROFF_ARGS)
1.78 kristaps 2416: {
1.375 schwarze 2417: int irc, rr;
1.343 schwarze 2418:
1.375 schwarze 2419: rr = 1; /* If arguments follow "\}", preserve them. */
2420: irc = roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
1.340 schwarze 2421: if (rr)
2422: irc |= ROFF_CONT;
2423: return irc;
1.74 kristaps 2424: }
2425:
1.266 schwarze 2426: /* --- handling of numeric and conditional expressions -------------------- */
2427:
1.204 schwarze 2428: /*
2429: * Parse a single signed integer number. Stop at the first non-digit.
2430: * If there is at least one digit, return success and advance the
2431: * parse point, else return failure and let the parse point unchanged.
2432: * Ignore overflows, treat them just like the C language.
2433: */
1.184 schwarze 2434: static int
1.261 schwarze 2435: roff_getnum(const char *v, int *pos, int *res, int flags)
1.184 schwarze 2436: {
1.261 schwarze 2437: int myres, scaled, n, p;
1.206 schwarze 2438:
2439: if (NULL == res)
2440: res = &myres;
1.184 schwarze 2441:
2442: p = *pos;
2443: n = v[p] == '-';
1.261 schwarze 2444: if (n || v[p] == '+')
1.184 schwarze 2445: p++;
2446:
1.261 schwarze 2447: if (flags & ROFFNUM_WHITE)
2448: while (isspace((unsigned char)v[p]))
2449: p++;
2450:
1.184 schwarze 2451: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.204 schwarze 2452: *res = 10 * *res + v[p] - '0';
1.184 schwarze 2453: if (p == *pos + n)
2454: return 0;
2455:
2456: if (n)
2457: *res = -*res;
2458:
1.254 schwarze 2459: /* Each number may be followed by one optional scaling unit. */
2460:
2461: switch (v[p]) {
2462: case 'f':
1.261 schwarze 2463: scaled = *res * 65536;
1.254 schwarze 2464: break;
2465: case 'i':
1.261 schwarze 2466: scaled = *res * 240;
1.254 schwarze 2467: break;
2468: case 'c':
1.261 schwarze 2469: scaled = *res * 240 / 2.54;
1.254 schwarze 2470: break;
2471: case 'v':
2472: case 'P':
1.261 schwarze 2473: scaled = *res * 40;
1.254 schwarze 2474: break;
2475: case 'm':
2476: case 'n':
1.261 schwarze 2477: scaled = *res * 24;
1.254 schwarze 2478: break;
2479: case 'p':
1.261 schwarze 2480: scaled = *res * 10 / 3;
1.254 schwarze 2481: break;
2482: case 'u':
1.261 schwarze 2483: scaled = *res;
1.254 schwarze 2484: break;
2485: case 'M':
1.261 schwarze 2486: scaled = *res * 6 / 25;
1.254 schwarze 2487: break;
2488: default:
1.261 schwarze 2489: scaled = *res;
1.254 schwarze 2490: p--;
2491: break;
2492: }
1.261 schwarze 2493: if (flags & ROFFNUM_SCALE)
2494: *res = scaled;
1.254 schwarze 2495:
2496: *pos = p + 1;
1.277 schwarze 2497: return 1;
1.184 schwarze 2498: }
2499:
1.198 schwarze 2500: /*
2501: * Evaluate a string comparison condition.
2502: * The first character is the delimiter.
2503: * Succeed if the string up to its second occurrence
1.396 schwarze 2504: * matches the string up to its third occurrence.
1.198 schwarze 2505: * Advance the cursor after the third occurrence
2506: * or lacking that, to the end of the line.
2507: */
2508: static int
2509: roff_evalstrcond(const char *v, int *pos)
2510: {
2511: const char *s1, *s2, *s3;
2512: int match;
2513:
2514: match = 0;
2515: s1 = v + *pos; /* initial delimiter */
2516: s2 = s1 + 1; /* for scanning the first string */
2517: s3 = strchr(s2, *s1); /* for scanning the second string */
2518:
2519: if (NULL == s3) /* found no middle delimiter */
2520: goto out;
2521:
2522: while ('\0' != *++s3) {
2523: if (*s2 != *s3) { /* mismatch */
2524: s3 = strchr(s3, *s1);
2525: break;
2526: }
2527: if (*s3 == *s1) { /* found the final delimiter */
2528: match = 1;
2529: break;
2530: }
2531: s2++;
2532: }
2533:
2534: out:
2535: if (NULL == s3)
2536: s3 = strchr(s2, '\0');
1.242 schwarze 2537: else if (*s3 != '\0')
1.198 schwarze 2538: s3++;
2539: *pos = s3 - v;
1.277 schwarze 2540: return match;
1.198 schwarze 2541: }
2542:
1.204 schwarze 2543: /*
2544: * Evaluate an optionally negated single character, numerical,
2545: * or string condition.
2546: */
1.198 schwarze 2547: static int
1.271 schwarze 2548: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.88 kristaps 2549: {
1.336 schwarze 2550: const char *start, *end;
2551: char *cp, *name;
2552: size_t sz;
2553: int deftype, len, number, savepos, istrue, wanttrue;
1.88 kristaps 2554:
1.198 schwarze 2555: if ('!' == v[*pos]) {
2556: wanttrue = 0;
2557: (*pos)++;
2558: } else
2559: wanttrue = 1;
2560:
1.88 kristaps 2561: switch (v[*pos]) {
1.240 schwarze 2562: case '\0':
1.277 schwarze 2563: return 0;
1.207 schwarze 2564: case 'n':
2565: case 'o':
1.88 kristaps 2566: (*pos)++;
1.277 schwarze 2567: return wanttrue;
1.207 schwarze 2568: case 'e':
2569: case 't':
1.239 schwarze 2570: case 'v':
1.88 kristaps 2571: (*pos)++;
1.277 schwarze 2572: return !wanttrue;
1.336 schwarze 2573: case 'c':
2574: do {
2575: (*pos)++;
2576: } while (v[*pos] == ' ');
2577:
2578: /*
2579: * Quirk for groff compatibility:
2580: * The horizontal tab is neither available nor unavailable.
2581: */
2582:
2583: if (v[*pos] == '\t') {
2584: (*pos)++;
2585: return 0;
2586: }
2587:
2588: /* Printable ASCII characters are available. */
2589:
2590: if (v[*pos] != '\\') {
2591: (*pos)++;
2592: return wanttrue;
2593: }
2594:
2595: end = v + ++*pos;
2596: switch (mandoc_escape(&end, &start, &len)) {
2597: case ESCAPE_SPECIAL:
2598: istrue = mchars_spec2cp(start, len) != -1;
2599: break;
2600: case ESCAPE_UNICODE:
2601: istrue = 1;
2602: break;
2603: case ESCAPE_NUMBERED:
2604: istrue = mchars_num2char(start, len) != -1;
2605: break;
2606: default:
2607: istrue = !wanttrue;
2608: break;
2609: }
2610: *pos = end - v;
2611: return istrue == wanttrue;
1.310 schwarze 2612: case 'd':
1.271 schwarze 2613: case 'r':
1.310 schwarze 2614: cp = v + *pos + 1;
2615: while (*cp == ' ')
2616: cp++;
2617: name = cp;
2618: sz = roff_getname(r, &cp, ln, cp - v);
1.315 schwarze 2619: if (sz == 0)
2620: istrue = 0;
2621: else if (v[*pos] == 'r')
2622: istrue = roff_hasregn(r, name, sz);
2623: else {
2624: deftype = ROFFDEF_ANY;
2625: roff_getstrn(r, name, sz, &deftype);
2626: istrue = !!deftype;
2627: }
1.363 schwarze 2628: *pos = (name + sz) - v;
1.310 schwarze 2629: return istrue == wanttrue;
1.88 kristaps 2630: default:
2631: break;
2632: }
2633:
1.241 schwarze 2634: savepos = *pos;
1.261 schwarze 2635: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.277 schwarze 2636: return (number > 0) == wanttrue;
1.241 schwarze 2637: else if (*pos == savepos)
1.277 schwarze 2638: return roff_evalstrcond(v, pos) == wanttrue;
1.204 schwarze 2639: else
1.277 schwarze 2640: return 0;
1.88 kristaps 2641: }
2642:
1.340 schwarze 2643: static int
1.103 kristaps 2644: roff_line_ignore(ROFF_ARGS)
1.89 kristaps 2645: {
1.123 schwarze 2646:
1.277 schwarze 2647: return ROFF_IGN;
1.89 kristaps 2648: }
2649:
1.340 schwarze 2650: static int
1.251 schwarze 2651: roff_insec(ROFF_ARGS)
2652: {
2653:
1.350 schwarze 2654: mandoc_msg(MANDOCERR_REQ_INSEC, ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2655: return ROFF_IGN;
1.251 schwarze 2656: }
2657:
1.340 schwarze 2658: static int
1.251 schwarze 2659: roff_unsupp(ROFF_ARGS)
2660: {
2661:
1.350 schwarze 2662: mandoc_msg(MANDOCERR_REQ_UNSUPP, ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2663: return ROFF_IGN;
1.251 schwarze 2664: }
2665:
1.340 schwarze 2666: static int
1.82 kristaps 2667: roff_cond(ROFF_ARGS)
1.74 kristaps 2668: {
1.340 schwarze 2669: int irc;
1.173 schwarze 2670:
2671: roffnode_push(r, tok, NULL, ln, ppos);
1.74 kristaps 2672:
1.207 schwarze 2673: /*
1.134 kristaps 2674: * An `.el' has no conditional body: it will consume the value
2675: * of the current rstack entry set in prior `ie' calls or
1.207 schwarze 2676: * defaults to DENY.
1.134 kristaps 2677: *
2678: * If we're not an `el', however, then evaluate the conditional.
2679: */
1.133 kristaps 2680:
1.238 schwarze 2681: r->last->rule = tok == ROFF_el ?
1.207 schwarze 2682: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.238 schwarze 2683: roff_evalcond(r, ln, buf->buf, &pos);
1.77 kristaps 2684:
1.134 kristaps 2685: /*
2686: * An if-else will put the NEGATION of the current evaluated
2687: * conditional into the stack of rules.
2688: */
2689:
1.238 schwarze 2690: if (tok == ROFF_ie) {
1.223 schwarze 2691: if (r->rstackpos + 1 == r->rstacksz) {
2692: r->rstacksz += 16;
2693: r->rstack = mandoc_reallocarray(r->rstack,
2694: r->rstacksz, sizeof(int));
1.134 kristaps 2695: }
1.198 schwarze 2696: r->rstack[++r->rstackpos] = !r->last->rule;
1.82 kristaps 2697: }
1.88 kristaps 2698:
2699: /* If the parent has false as its rule, then so do we. */
2700:
1.198 schwarze 2701: if (r->last->parent && !r->last->parent->rule)
2702: r->last->rule = 0;
1.88 kristaps 2703:
2704: /*
1.173 schwarze 2705: * Determine scope.
2706: * If there is nothing on the line after the conditional,
2707: * not even whitespace, use next-line scope.
1.340 schwarze 2708: * Except that .while does not support next-line scope.
1.88 kristaps 2709: */
1.74 kristaps 2710:
1.340 schwarze 2711: if (buf->buf[pos] == '\0' && tok != ROFF_while) {
1.173 schwarze 2712: r->last->endspan = 2;
2713: goto out;
2714: }
2715:
1.238 schwarze 2716: while (buf->buf[pos] == ' ')
1.173 schwarze 2717: pos++;
2718:
2719: /* An opening brace requests multiline scope. */
1.75 kristaps 2720:
1.238 schwarze 2721: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.75 kristaps 2722: r->last->endspan = -1;
2723: pos += 2;
1.272 schwarze 2724: while (buf->buf[pos] == ' ')
2725: pos++;
1.173 schwarze 2726: goto out;
1.207 schwarze 2727: }
1.74 kristaps 2728:
1.77 kristaps 2729: /*
1.173 schwarze 2730: * Anything else following the conditional causes
2731: * single-line scope. Warn if the scope contains
2732: * nothing but trailing whitespace.
1.77 kristaps 2733: */
2734:
1.238 schwarze 2735: if (buf->buf[pos] == '\0')
1.350 schwarze 2736: mandoc_msg(MANDOCERR_COND_EMPTY,
2737: ln, ppos, "%s", roff_name[tok]);
1.77 kristaps 2738:
1.173 schwarze 2739: r->last->endspan = 1;
1.74 kristaps 2740:
1.173 schwarze 2741: out:
1.75 kristaps 2742: *offs = pos;
1.340 schwarze 2743: irc = ROFF_RERUN;
2744: if (tok == ROFF_while)
2745: irc |= ROFF_WHILE;
2746: return irc;
1.83 schwarze 2747: }
2748:
1.340 schwarze 2749: static int
1.92 schwarze 2750: roff_ds(ROFF_ARGS)
2751: {
1.212 schwarze 2752: char *string;
2753: const char *name;
2754: size_t namesz;
1.96 kristaps 2755:
1.251 schwarze 2756: /* Ignore groff compatibility mode for now. */
2757:
2758: if (tok == ROFF_ds1)
2759: tok = ROFF_ds;
2760: else if (tok == ROFF_as1)
2761: tok = ROFF_as;
2762:
1.96 kristaps 2763: /*
1.212 schwarze 2764: * The first word is the name of the string.
2765: * If it is empty or terminated by an escape sequence,
2766: * abort the `ds' request without defining anything.
1.96 kristaps 2767: */
1.92 schwarze 2768:
1.238 schwarze 2769: name = string = buf->buf + pos;
2770: if (*name == '\0')
1.277 schwarze 2771: return ROFF_IGN;
1.92 schwarze 2772:
1.212 schwarze 2773: namesz = roff_getname(r, &string, ln, pos);
1.363 schwarze 2774: switch (name[namesz]) {
2775: case '\\':
1.277 schwarze 2776: return ROFF_IGN;
1.363 schwarze 2777: case '\t':
2778: string = buf->buf + pos + namesz;
2779: break;
2780: default:
2781: break;
2782: }
1.212 schwarze 2783:
2784: /* Read past the initial double-quote, if any. */
1.238 schwarze 2785: if (*string == '"')
1.92 schwarze 2786: string++;
2787:
1.96 kristaps 2788: /* The rest is the value. */
1.212 schwarze 2789: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2790: ROFF_as == tok);
1.311 schwarze 2791: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.277 schwarze 2792: return ROFF_IGN;
1.92 schwarze 2793: }
2794:
1.204 schwarze 2795: /*
2796: * Parse a single operator, one or two characters long.
2797: * If the operator is recognized, return success and advance the
2798: * parse point, else return failure and let the parse point unchanged.
2799: */
2800: static int
2801: roff_getop(const char *v, int *pos, char *res)
2802: {
2803:
2804: *res = v[*pos];
2805:
2806: switch (*res) {
1.207 schwarze 2807: case '+':
2808: case '-':
2809: case '*':
2810: case '/':
2811: case '%':
2812: case '&':
2813: case ':':
1.204 schwarze 2814: break;
2815: case '<':
2816: switch (v[*pos + 1]) {
1.207 schwarze 2817: case '=':
1.204 schwarze 2818: *res = 'l';
2819: (*pos)++;
2820: break;
1.207 schwarze 2821: case '>':
1.204 schwarze 2822: *res = '!';
2823: (*pos)++;
2824: break;
1.207 schwarze 2825: case '?':
1.204 schwarze 2826: *res = 'i';
2827: (*pos)++;
2828: break;
2829: default:
2830: break;
2831: }
2832: break;
2833: case '>':
2834: switch (v[*pos + 1]) {
1.207 schwarze 2835: case '=':
1.204 schwarze 2836: *res = 'g';
2837: (*pos)++;
2838: break;
1.207 schwarze 2839: case '?':
1.204 schwarze 2840: *res = 'a';
2841: (*pos)++;
2842: break;
2843: default:
2844: break;
2845: }
2846: break;
2847: case '=':
2848: if ('=' == v[*pos + 1])
2849: (*pos)++;
2850: break;
2851: default:
1.277 schwarze 2852: return 0;
1.204 schwarze 2853: }
2854: (*pos)++;
2855:
1.277 schwarze 2856: return *res;
1.204 schwarze 2857: }
2858:
2859: /*
2860: * Evaluate either a parenthesized numeric expression
2861: * or a single signed integer number.
2862: */
2863: static int
1.235 schwarze 2864: roff_evalpar(struct roff *r, int ln,
1.261 schwarze 2865: const char *v, int *pos, int *res, int flags)
1.204 schwarze 2866: {
2867:
2868: if ('(' != v[*pos])
1.277 schwarze 2869: return roff_getnum(v, pos, res, flags);
1.204 schwarze 2870:
2871: (*pos)++;
1.261 schwarze 2872: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.277 schwarze 2873: return 0;
1.204 schwarze 2874:
1.206 schwarze 2875: /*
2876: * Omission of the closing parenthesis
2877: * is an error in validation mode,
2878: * but ignored in evaluation mode.
2879: */
2880:
1.204 schwarze 2881: if (')' == v[*pos])
2882: (*pos)++;
1.206 schwarze 2883: else if (NULL == res)
1.277 schwarze 2884: return 0;
1.204 schwarze 2885:
1.277 schwarze 2886: return 1;
1.204 schwarze 2887: }
2888:
2889: /*
2890: * Evaluate a complete numeric expression.
2891: * Proceed left to right, there is no concept of precedence.
2892: */
2893: static int
1.235 schwarze 2894: roff_evalnum(struct roff *r, int ln, const char *v,
1.261 schwarze 2895: int *pos, int *res, int flags)
1.204 schwarze 2896: {
2897: int mypos, operand2;
2898: char operator;
2899:
2900: if (NULL == pos) {
2901: mypos = 0;
2902: pos = &mypos;
2903: }
2904:
1.261 schwarze 2905: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2906: while (isspace((unsigned char)v[*pos]))
2907: (*pos)++;
2908:
1.261 schwarze 2909: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.277 schwarze 2910: return 0;
1.204 schwarze 2911:
2912: while (1) {
1.261 schwarze 2913: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2914: while (isspace((unsigned char)v[*pos]))
2915: (*pos)++;
2916:
2917: if ( ! roff_getop(v, pos, &operator))
2918: break;
2919:
1.261 schwarze 2920: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2921: while (isspace((unsigned char)v[*pos]))
2922: (*pos)++;
2923:
1.261 schwarze 2924: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.277 schwarze 2925: return 0;
1.204 schwarze 2926:
1.261 schwarze 2927: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2928: while (isspace((unsigned char)v[*pos]))
2929: (*pos)++;
1.206 schwarze 2930:
2931: if (NULL == res)
2932: continue;
1.204 schwarze 2933:
2934: switch (operator) {
1.207 schwarze 2935: case '+':
1.204 schwarze 2936: *res += operand2;
2937: break;
1.207 schwarze 2938: case '-':
1.204 schwarze 2939: *res -= operand2;
2940: break;
1.207 schwarze 2941: case '*':
1.204 schwarze 2942: *res *= operand2;
2943: break;
1.207 schwarze 2944: case '/':
1.244 schwarze 2945: if (operand2 == 0) {
1.235 schwarze 2946: mandoc_msg(MANDOCERR_DIVZERO,
1.350 schwarze 2947: ln, *pos, "%s", v);
1.234 kristaps 2948: *res = 0;
2949: break;
2950: }
1.204 schwarze 2951: *res /= operand2;
2952: break;
1.207 schwarze 2953: case '%':
1.244 schwarze 2954: if (operand2 == 0) {
2955: mandoc_msg(MANDOCERR_DIVZERO,
1.350 schwarze 2956: ln, *pos, "%s", v);
1.244 schwarze 2957: *res = 0;
2958: break;
2959: }
1.204 schwarze 2960: *res %= operand2;
2961: break;
1.207 schwarze 2962: case '<':
1.204 schwarze 2963: *res = *res < operand2;
2964: break;
1.207 schwarze 2965: case '>':
1.204 schwarze 2966: *res = *res > operand2;
2967: break;
1.207 schwarze 2968: case 'l':
1.204 schwarze 2969: *res = *res <= operand2;
2970: break;
1.207 schwarze 2971: case 'g':
1.204 schwarze 2972: *res = *res >= operand2;
2973: break;
1.207 schwarze 2974: case '=':
1.204 schwarze 2975: *res = *res == operand2;
2976: break;
1.207 schwarze 2977: case '!':
1.204 schwarze 2978: *res = *res != operand2;
2979: break;
1.207 schwarze 2980: case '&':
1.204 schwarze 2981: *res = *res && operand2;
2982: break;
1.207 schwarze 2983: case ':':
1.204 schwarze 2984: *res = *res || operand2;
2985: break;
1.207 schwarze 2986: case 'i':
1.204 schwarze 2987: if (operand2 < *res)
2988: *res = operand2;
2989: break;
1.207 schwarze 2990: case 'a':
1.204 schwarze 2991: if (operand2 > *res)
2992: *res = operand2;
2993: break;
2994: default:
2995: abort();
2996: }
2997: }
1.277 schwarze 2998: return 1;
1.204 schwarze 2999: }
3000:
1.266 schwarze 3001: /* --- register management ------------------------------------------------ */
3002:
1.180 schwarze 3003: void
1.187 schwarze 3004: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.147 kristaps 3005: {
1.327 schwarze 3006: roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
1.326 schwarze 3007: }
3008:
3009: static void
3010: roff_setregn(struct roff *r, const char *name, size_t len,
1.327 schwarze 3011: int val, char sign, int step)
1.326 schwarze 3012: {
1.180 schwarze 3013: struct roffreg *reg;
3014:
3015: /* Search for an existing register with the same name. */
3016: reg = r->regtab;
3017:
1.326 schwarze 3018: while (reg != NULL && (reg->key.sz != len ||
3019: strncmp(reg->key.p, name, len) != 0))
1.180 schwarze 3020: reg = reg->next;
1.147 kristaps 3021:
1.180 schwarze 3022: if (NULL == reg) {
3023: /* Create a new register. */
3024: reg = mandoc_malloc(sizeof(struct roffreg));
1.326 schwarze 3025: reg->key.p = mandoc_strndup(name, len);
3026: reg->key.sz = len;
1.187 schwarze 3027: reg->val = 0;
1.327 schwarze 3028: reg->step = 0;
1.180 schwarze 3029: reg->next = r->regtab;
3030: r->regtab = reg;
3031: }
3032:
1.187 schwarze 3033: if ('+' == sign)
3034: reg->val += val;
3035: else if ('-' == sign)
3036: reg->val -= val;
3037: else
3038: reg->val = val;
1.327 schwarze 3039: if (step != INT_MIN)
3040: reg->step = step;
1.147 kristaps 3041: }
3042:
1.192 schwarze 3043: /*
3044: * Handle some predefined read-only number registers.
3045: * For now, return -1 if the requested register is not predefined;
3046: * in case a predefined read-only register having the value -1
3047: * were to turn up, another special value would have to be chosen.
3048: */
3049: static int
1.273 schwarze 3050: roff_getregro(const struct roff *r, const char *name)
1.192 schwarze 3051: {
3052:
3053: switch (*name) {
1.273 schwarze 3054: case '$': /* Number of arguments of the last macro evaluated. */
1.339 schwarze 3055: return r->mstackpos < 0 ? 0 : r->mstack[r->mstackpos].argc;
1.207 schwarze 3056: case 'A': /* ASCII approximation mode is always off. */
1.277 schwarze 3057: return 0;
1.207 schwarze 3058: case 'g': /* Groff compatibility mode is always on. */
1.277 schwarze 3059: return 1;
1.207 schwarze 3060: case 'H': /* Fixed horizontal resolution. */
1.277 schwarze 3061: return 24;
1.207 schwarze 3062: case 'j': /* Always adjust left margin only. */
1.277 schwarze 3063: return 0;
1.207 schwarze 3064: case 'T': /* Some output device is always defined. */
1.277 schwarze 3065: return 1;
1.207 schwarze 3066: case 'V': /* Fixed vertical resolution. */
1.277 schwarze 3067: return 40;
1.192 schwarze 3068: default:
1.277 schwarze 3069: return -1;
1.192 schwarze 3070: }
3071: }
3072:
1.181 schwarze 3073: int
1.326 schwarze 3074: roff_getreg(struct roff *r, const char *name)
1.147 kristaps 3075: {
1.327 schwarze 3076: return roff_getregn(r, name, strlen(name), '\0');
1.181 schwarze 3077: }
3078:
3079: static int
1.327 schwarze 3080: roff_getregn(struct roff *r, const char *name, size_t len, char sign)
1.181 schwarze 3081: {
3082: struct roffreg *reg;
1.192 schwarze 3083: int val;
3084:
3085: if ('.' == name[0] && 2 == len) {
1.273 schwarze 3086: val = roff_getregro(r, name + 1);
1.192 schwarze 3087: if (-1 != val)
1.277 schwarze 3088: return val;
1.192 schwarze 3089: }
1.181 schwarze 3090:
1.327 schwarze 3091: for (reg = r->regtab; reg; reg = reg->next) {
1.181 schwarze 3092: if (len == reg->key.sz &&
1.327 schwarze 3093: 0 == strncmp(name, reg->key.p, len)) {
3094: switch (sign) {
3095: case '+':
3096: reg->val += reg->step;
3097: break;
3098: case '-':
3099: reg->val -= reg->step;
3100: break;
3101: default:
3102: break;
3103: }
1.277 schwarze 3104: return reg->val;
1.327 schwarze 3105: }
3106: }
1.271 schwarze 3107:
1.327 schwarze 3108: roff_setregn(r, name, len, 0, '\0', INT_MIN);
1.277 schwarze 3109: return 0;
1.271 schwarze 3110: }
3111:
3112: static int
3113: roff_hasregn(const struct roff *r, const char *name, size_t len)
3114: {
3115: struct roffreg *reg;
3116: int val;
3117:
3118: if ('.' == name[0] && 2 == len) {
1.273 schwarze 3119: val = roff_getregro(r, name + 1);
1.271 schwarze 3120: if (-1 != val)
1.277 schwarze 3121: return 1;
1.271 schwarze 3122: }
3123:
3124: for (reg = r->regtab; reg; reg = reg->next)
3125: if (len == reg->key.sz &&
3126: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 3127: return 1;
1.147 kristaps 3128:
1.277 schwarze 3129: return 0;
1.147 kristaps 3130: }
3131:
1.180 schwarze 3132: static void
3133: roff_freereg(struct roffreg *reg)
1.147 kristaps 3134: {
1.180 schwarze 3135: struct roffreg *old_reg;
1.147 kristaps 3136:
1.180 schwarze 3137: while (NULL != reg) {
3138: free(reg->key.p);
3139: old_reg = reg;
3140: reg = reg->next;
3141: free(old_reg);
3142: }
1.147 kristaps 3143: }
1.92 schwarze 3144:
1.340 schwarze 3145: static int
1.89 kristaps 3146: roff_nr(ROFF_ARGS)
1.83 schwarze 3147: {
1.327 schwarze 3148: char *key, *val, *step;
1.212 schwarze 3149: size_t keysz;
1.327 schwarze 3150: int iv, is, len;
1.187 schwarze 3151: char sign;
1.89 kristaps 3152:
1.238 schwarze 3153: key = val = buf->buf + pos;
3154: if (*key == '\0')
1.277 schwarze 3155: return ROFF_IGN;
1.212 schwarze 3156:
3157: keysz = roff_getname(r, &val, ln, pos);
1.363 schwarze 3158: if (key[keysz] == '\\' || key[keysz] == '\t')
1.277 schwarze 3159: return ROFF_IGN;
1.89 kristaps 3160:
1.187 schwarze 3161: sign = *val;
1.238 schwarze 3162: if (sign == '+' || sign == '-')
1.187 schwarze 3163: val++;
3164:
1.327 schwarze 3165: len = 0;
3166: if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
3167: return ROFF_IGN;
3168:
3169: step = val + len;
3170: while (isspace((unsigned char)*step))
3171: step++;
3172: if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)
3173: is = INT_MIN;
1.109 kristaps 3174:
1.327 schwarze 3175: roff_setregn(r, key, keysz, iv, sign, is);
1.277 schwarze 3176: return ROFF_IGN;
1.203 schwarze 3177: }
3178:
1.340 schwarze 3179: static int
1.203 schwarze 3180: roff_rr(ROFF_ARGS)
3181: {
3182: struct roffreg *reg, **prev;
1.212 schwarze 3183: char *name, *cp;
3184: size_t namesz;
1.203 schwarze 3185:
1.238 schwarze 3186: name = cp = buf->buf + pos;
3187: if (*name == '\0')
1.277 schwarze 3188: return ROFF_IGN;
1.212 schwarze 3189: namesz = roff_getname(r, &cp, ln, pos);
3190: name[namesz] = '\0';
1.203 schwarze 3191:
3192: prev = &r->regtab;
3193: while (1) {
3194: reg = *prev;
1.238 schwarze 3195: if (reg == NULL || !strcmp(name, reg->key.p))
1.203 schwarze 3196: break;
3197: prev = ®->next;
3198: }
1.238 schwarze 3199: if (reg != NULL) {
1.203 schwarze 3200: *prev = reg->next;
3201: free(reg->key.p);
3202: free(reg);
3203: }
1.277 schwarze 3204: return ROFF_IGN;
1.122 schwarze 3205: }
3206:
1.266 schwarze 3207: /* --- handler functions for roff requests -------------------------------- */
3208:
1.340 schwarze 3209: static int
1.122 schwarze 3210: roff_rm(ROFF_ARGS)
3211: {
3212: const char *name;
3213: char *cp;
1.212 schwarze 3214: size_t namesz;
1.122 schwarze 3215:
1.238 schwarze 3216: cp = buf->buf + pos;
3217: while (*cp != '\0') {
1.212 schwarze 3218: name = cp;
1.238 schwarze 3219: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.212 schwarze 3220: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.311 schwarze 3221: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.363 schwarze 3222: if (name[namesz] == '\\' || name[namesz] == '\t')
1.212 schwarze 3223: break;
1.122 schwarze 3224: }
1.277 schwarze 3225: return ROFF_IGN;
1.178 schwarze 3226: }
3227:
1.340 schwarze 3228: static int
1.178 schwarze 3229: roff_it(ROFF_ARGS)
3230: {
3231: int iv;
3232:
3233: /* Parse the number of lines. */
1.261 schwarze 3234:
3235: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.350 schwarze 3236: mandoc_msg(MANDOCERR_IT_NONUM,
3237: ln, ppos, "%s", buf->buf + 1);
1.277 schwarze 3238: return ROFF_IGN;
1.178 schwarze 3239: }
3240:
1.262 schwarze 3241: while (isspace((unsigned char)buf->buf[pos]))
3242: pos++;
3243:
3244: /*
3245: * Arm the input line trap.
3246: * Special-casing "an-trap" is an ugly workaround to cope
3247: * with DocBook stupidly fiddling with man(7) internals.
3248: */
1.261 schwarze 3249:
1.178 schwarze 3250: roffit_lines = iv;
1.262 schwarze 3251: roffit_macro = mandoc_strdup(iv != 1 ||
3252: strcmp(buf->buf + pos, "an-trap") ?
3253: buf->buf + pos : "br");
1.277 schwarze 3254: return ROFF_IGN;
1.175 schwarze 3255: }
3256:
1.340 schwarze 3257: static int
1.175 schwarze 3258: roff_Dd(ROFF_ARGS)
3259: {
1.315 schwarze 3260: int mask;
3261: enum roff_tok t, te;
1.227 schwarze 3262:
1.315 schwarze 3263: switch (tok) {
3264: case ROFF_Dd:
3265: tok = MDOC_Dd;
3266: te = MDOC_MAX;
3267: if (r->format == 0)
3268: r->format = MPARSE_MDOC;
3269: mask = MPARSE_MDOC | MPARSE_QUICK;
3270: break;
3271: case ROFF_TH:
3272: tok = MAN_TH;
3273: te = MAN_MAX;
3274: if (r->format == 0)
3275: r->format = MPARSE_MAN;
3276: mask = MPARSE_QUICK;
3277: break;
3278: default:
3279: abort();
3280: }
3281: if ((r->options & mask) == 0)
3282: for (t = tok; t < te; t++)
3283: roff_setstr(r, roff_name[t], NULL, 0);
1.277 schwarze 3284: return ROFF_CONT;
1.109 kristaps 3285: }
3286:
1.340 schwarze 3287: static int
1.109 kristaps 3288: roff_TE(ROFF_ARGS)
3289: {
1.361 schwarze 3290: r->man->flags &= ~ROFF_NONOFILL;
1.321 schwarze 3291: if (r->tbl == NULL) {
1.350 schwarze 3292: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "TE");
1.321 schwarze 3293: return ROFF_IGN;
3294: }
1.346 schwarze 3295: if (tbl_end(r->tbl, 0) == 0) {
1.321 schwarze 3296: r->tbl = NULL;
1.258 schwarze 3297: free(buf->buf);
3298: buf->buf = mandoc_strdup(".sp");
3299: buf->sz = 4;
1.329 schwarze 3300: *offs = 0;
1.277 schwarze 3301: return ROFF_REPARSE;
1.258 schwarze 3302: }
1.321 schwarze 3303: r->tbl = NULL;
1.277 schwarze 3304: return ROFF_IGN;
1.112 kristaps 3305: }
3306:
1.340 schwarze 3307: static int
1.112 kristaps 3308: roff_T_(ROFF_ARGS)
3309: {
3310:
3311: if (NULL == r->tbl)
1.350 schwarze 3312: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "T&");
1.112 kristaps 3313: else
1.296 schwarze 3314: tbl_restart(ln, ppos, r->tbl);
1.112 kristaps 3315:
1.277 schwarze 3316: return ROFF_IGN;
1.109 kristaps 3317: }
3318:
1.230 schwarze 3319: /*
3320: * Handle in-line equation delimiters.
3321: */
1.340 schwarze 3322: static int
1.238 schwarze 3323: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.151 kristaps 3324: {
1.233 schwarze 3325: char *cp1, *cp2;
3326: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.151 kristaps 3327:
1.230 schwarze 3328: /*
3329: * Outside equations, look for an opening delimiter.
3330: * If we are inside an equation, we already know it is
3331: * in-line, or this function wouldn't have been called;
3332: * so look for a closing delimiter.
3333: */
3334:
1.238 schwarze 3335: cp1 = buf->buf + pos;
1.230 schwarze 3336: cp2 = strchr(cp1, r->eqn == NULL ?
3337: r->last_eqn->odelim : r->last_eqn->cdelim);
3338: if (cp2 == NULL)
1.277 schwarze 3339: return ROFF_CONT;
1.230 schwarze 3340:
1.233 schwarze 3341: *cp2++ = '\0';
3342: bef_pr = bef_nl = aft_nl = aft_pr = "";
3343:
3344: /* Handle preceding text, protecting whitespace. */
3345:
1.238 schwarze 3346: if (*buf->buf != '\0') {
1.233 schwarze 3347: if (r->eqn == NULL)
3348: bef_pr = "\\&";
3349: bef_nl = "\n";
3350: }
3351:
3352: /*
3353: * Prepare replacing the delimiter with an equation macro
3354: * and drop leading white space from the equation.
3355: */
1.230 schwarze 3356:
1.233 schwarze 3357: if (r->eqn == NULL) {
3358: while (*cp2 == ' ')
3359: cp2++;
3360: mac = ".EQ";
3361: } else
3362: mac = ".EN";
3363:
3364: /* Handle following text, protecting whitespace. */
3365:
3366: if (*cp2 != '\0') {
3367: aft_nl = "\n";
3368: if (r->eqn != NULL)
3369: aft_pr = "\\&";
3370: }
3371:
3372: /* Do the actual replacement. */
3373:
1.238 schwarze 3374: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.233 schwarze 3375: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.238 schwarze 3376: free(buf->buf);
3377: buf->buf = cp1;
1.230 schwarze 3378:
3379: /* Toggle the in-line state of the eqn subsystem. */
3380:
3381: r->eqn_inline = r->eqn == NULL;
1.277 schwarze 3382: return ROFF_REPARSE;
1.151 kristaps 3383: }
3384:
1.340 schwarze 3385: static int
1.235 schwarze 3386: roff_EQ(ROFF_ARGS)
1.125 kristaps 3387: {
1.319 schwarze 3388: struct roff_node *n;
3389:
1.356 schwarze 3390: if (r->man->meta.macroset == MACROSET_MAN)
1.322 schwarze 3391: man_breakscope(r->man, ROFF_EQ);
1.319 schwarze 3392: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
3393: if (ln > r->man->last->line)
3394: n->flags |= NODE_LINE;
1.348 schwarze 3395: n->eqn = eqn_box_new();
1.319 schwarze 3396: roff_node_append(r->man, n);
3397: r->man->next = ROFF_NEXT_SIBLING;
1.125 kristaps 3398:
1.238 schwarze 3399: assert(r->eqn == NULL);
1.319 schwarze 3400: if (r->last_eqn == NULL)
1.351 schwarze 3401: r->last_eqn = eqn_alloc();
1.319 schwarze 3402: else
3403: eqn_reset(r->last_eqn);
3404: r->eqn = r->last_eqn;
3405: r->eqn->node = n;
1.151 kristaps 3406:
1.238 schwarze 3407: if (buf->buf[pos] != '\0')
1.350 schwarze 3408: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.238 schwarze 3409: ".EQ %s", buf->buf + pos);
1.151 kristaps 3410:
1.277 schwarze 3411: return ROFF_IGN;
1.125 kristaps 3412: }
3413:
1.340 schwarze 3414: static int
1.125 kristaps 3415: roff_EN(ROFF_ARGS)
3416: {
1.319 schwarze 3417: if (r->eqn != NULL) {
3418: eqn_parse(r->eqn);
3419: r->eqn = NULL;
3420: } else
1.350 schwarze 3421: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "EN");
1.319 schwarze 3422: if (buf->buf[pos] != '\0')
1.350 schwarze 3423: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.319 schwarze 3424: "EN %s", buf->buf + pos);
1.277 schwarze 3425: return ROFF_IGN;
1.125 kristaps 3426: }
3427:
1.340 schwarze 3428: static int
1.109 kristaps 3429: roff_TS(ROFF_ARGS)
3430: {
1.321 schwarze 3431: if (r->tbl != NULL) {
1.350 schwarze 3432: mandoc_msg(MANDOCERR_BLK_BROKEN, ln, ppos, "TS breaks TS");
1.346 schwarze 3433: tbl_end(r->tbl, 0);
1.115 kristaps 3434: }
1.361 schwarze 3435: r->man->flags |= ROFF_NONOFILL;
1.351 schwarze 3436: r->tbl = tbl_alloc(ppos, ln, r->last_tbl);
1.346 schwarze 3437: if (r->last_tbl == NULL)
1.321 schwarze 3438: r->first_tbl = r->tbl;
3439: r->last_tbl = r->tbl;
1.297 schwarze 3440: return ROFF_IGN;
3441: }
3442:
1.340 schwarze 3443: static int
1.358 schwarze 3444: roff_noarg(ROFF_ARGS)
3445: {
3446: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3447: man_breakscope(r->man, tok);
3448: if (tok == ROFF_brp)
3449: tok = ROFF_br;
3450: roff_elem_alloc(r->man, ln, ppos, tok);
3451: if (buf->buf[pos] != '\0')
3452: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
3453: "%s %s", roff_name[tok], buf->buf + pos);
3454: if (tok == ROFF_nf)
3455: r->man->flags |= ROFF_NOFILL;
3456: else if (tok == ROFF_fi)
3457: r->man->flags &= ~ROFF_NOFILL;
3458: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3459: r->man->next = ROFF_NEXT_SIBLING;
3460: return ROFF_IGN;
3461: }
3462:
3463: static int
1.297 schwarze 3464: roff_onearg(ROFF_ARGS)
3465: {
3466: struct roff_node *n;
3467: char *cp;
1.305 schwarze 3468: int npos;
1.297 schwarze 3469:
1.302 schwarze 3470: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.320 schwarze 3471: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
3472: tok == ROFF_ti))
1.302 schwarze 3473: man_breakscope(r->man, tok);
3474:
1.309 schwarze 3475: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.305 schwarze 3476: r->man->last = roffce_node;
3477: r->man->next = ROFF_NEXT_SIBLING;
3478: }
3479:
1.297 schwarze 3480: roff_elem_alloc(r->man, ln, ppos, tok);
3481: n = r->man->last;
3482:
3483: cp = buf->buf + pos;
3484: if (*cp != '\0') {
3485: while (*cp != '\0' && *cp != ' ')
3486: cp++;
3487: while (*cp == ' ')
3488: *cp++ = '\0';
3489: if (*cp != '\0')
1.350 schwarze 3490: mandoc_msg(MANDOCERR_ARG_EXCESS,
3491: ln, (int)(cp - buf->buf),
1.297 schwarze 3492: "%s ... %s", roff_name[tok], cp);
3493: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.300 schwarze 3494: }
3495:
1.309 schwarze 3496: if (tok == ROFF_ce || tok == ROFF_rj) {
3497: if (r->man->last->type == ROFFT_ELEM) {
1.305 schwarze 3498: roff_word_alloc(r->man, ln, pos, "1");
3499: r->man->last->flags |= NODE_NOSRC;
3500: }
3501: npos = 0;
3502: if (roff_evalnum(r, ln, r->man->last->string, &npos,
3503: &roffce_lines, 0) == 0) {
1.350 schwarze 3504: mandoc_msg(MANDOCERR_CE_NONUM,
3505: ln, pos, "ce %s", buf->buf + pos);
1.305 schwarze 3506: roffce_lines = 1;
3507: }
3508: if (roffce_lines < 1) {
3509: r->man->last = r->man->last->parent;
3510: roffce_node = NULL;
3511: roffce_lines = 0;
3512: } else
3513: roffce_node = r->man->last->parent;
3514: } else {
3515: n->flags |= NODE_VALID | NODE_ENDED;
3516: r->man->last = n;
3517: }
3518: n->flags |= NODE_LINE;
1.300 schwarze 3519: r->man->next = ROFF_NEXT_SIBLING;
3520: return ROFF_IGN;
3521: }
3522:
1.340 schwarze 3523: static int
1.300 schwarze 3524: roff_manyarg(ROFF_ARGS)
3525: {
3526: struct roff_node *n;
3527: char *sp, *ep;
3528:
3529: roff_elem_alloc(r->man, ln, ppos, tok);
3530: n = r->man->last;
3531:
3532: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3533: while (*ep != '\0' && *ep != ' ')
3534: ep++;
3535: while (*ep == ' ')
3536: *ep++ = '\0';
3537: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.297 schwarze 3538: }
3539:
3540: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3541: r->man->last = n;
3542: r->man->next = ROFF_NEXT_SIBLING;
1.277 schwarze 3543: return ROFF_IGN;
1.251 schwarze 3544: }
3545:
1.340 schwarze 3546: static int
1.311 schwarze 3547: roff_als(ROFF_ARGS)
3548: {
3549: char *oldn, *newn, *end, *value;
3550: size_t oldsz, newsz, valsz;
3551:
3552: newn = oldn = buf->buf + pos;
3553: if (*newn == '\0')
3554: return ROFF_IGN;
3555:
3556: newsz = roff_getname(r, &oldn, ln, pos);
1.363 schwarze 3557: if (newn[newsz] == '\\' || newn[newsz] == '\t' || *oldn == '\0')
1.311 schwarze 3558: return ROFF_IGN;
3559:
3560: end = oldn;
3561: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3562: if (oldsz == 0)
3563: return ROFF_IGN;
3564:
1.338 schwarze 3565: valsz = mandoc_asprintf(&value, ".%.*s \\$@\\\"\n",
1.315 schwarze 3566: (int)oldsz, oldn);
1.311 schwarze 3567: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3568: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3569: free(value);
1.364 schwarze 3570: return ROFF_IGN;
3571: }
3572:
3573: /*
3574: * The .break request only makes sense inside conditionals,
3575: * and that case is already handled in roff_cond_sub().
3576: */
3577: static int
3578: roff_break(ROFF_ARGS)
3579: {
3580: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, pos, "break");
1.296 schwarze 3581: return ROFF_IGN;
1.92 schwarze 3582: }
3583:
1.340 schwarze 3584: static int
1.174 kristaps 3585: roff_cc(ROFF_ARGS)
3586: {
3587: const char *p;
3588:
1.238 schwarze 3589: p = buf->buf + pos;
1.174 kristaps 3590:
1.238 schwarze 3591: if (*p == '\0' || (r->control = *p++) == '.')
1.303 schwarze 3592: r->control = '\0';
1.174 kristaps 3593:
1.238 schwarze 3594: if (*p != '\0')
1.350 schwarze 3595: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.260 schwarze 3596: ln, p - buf->buf, "cc ... %s", p);
1.174 kristaps 3597:
1.341 schwarze 3598: return ROFF_IGN;
3599: }
3600:
3601: static int
3602: roff_char(ROFF_ARGS)
3603: {
3604: const char *p, *kp, *vp;
3605: size_t ksz, vsz;
3606: int font;
3607:
3608: /* Parse the character to be replaced. */
3609:
3610: kp = buf->buf + pos;
3611: p = kp + 1;
3612: if (*kp == '\0' || (*kp == '\\' &&
3613: mandoc_escape(&p, NULL, NULL) != ESCAPE_SPECIAL) ||
3614: (*p != ' ' && *p != '\0')) {
1.350 schwarze 3615: mandoc_msg(MANDOCERR_CHAR_ARG, ln, pos, "char %s", kp);
1.341 schwarze 3616: return ROFF_IGN;
3617: }
3618: ksz = p - kp;
3619: while (*p == ' ')
3620: p++;
3621:
3622: /*
3623: * If the replacement string contains a font escape sequence,
3624: * we have to restore the font at the end.
3625: */
3626:
3627: vp = p;
3628: vsz = strlen(p);
3629: font = 0;
3630: while (*p != '\0') {
3631: if (*p++ != '\\')
3632: continue;
3633: switch (mandoc_escape(&p, NULL, NULL)) {
3634: case ESCAPE_FONT:
3635: case ESCAPE_FONTROMAN:
3636: case ESCAPE_FONTITALIC:
3637: case ESCAPE_FONTBOLD:
3638: case ESCAPE_FONTBI:
1.378 schwarze 3639: case ESCAPE_FONTCR:
3640: case ESCAPE_FONTCB:
3641: case ESCAPE_FONTCI:
1.341 schwarze 3642: case ESCAPE_FONTPREV:
3643: font++;
3644: break;
3645: default:
3646: break;
3647: }
3648: }
3649: if (font > 1)
1.350 schwarze 3650: mandoc_msg(MANDOCERR_CHAR_FONT,
3651: ln, (int)(vp - buf->buf), "%s", vp);
1.341 schwarze 3652:
3653: /*
3654: * Approximate the effect of .char using the .tr tables.
3655: * XXX In groff, .char and .tr interact differently.
3656: */
3657:
3658: if (ksz == 1) {
3659: if (r->xtab == NULL)
3660: r->xtab = mandoc_calloc(128, sizeof(*r->xtab));
3661: assert((unsigned int)*kp < 128);
3662: free(r->xtab[(int)*kp].p);
3663: r->xtab[(int)*kp].sz = mandoc_asprintf(&r->xtab[(int)*kp].p,
3664: "%s%s", vp, font ? "\fP" : "");
3665: } else {
3666: roff_setstrn(&r->xmbtab, kp, ksz, vp, vsz, 0);
3667: if (font)
3668: roff_setstrn(&r->xmbtab, kp, ksz, "\\fP", 3, 1);
3669: }
1.277 schwarze 3670: return ROFF_IGN;
1.174 kristaps 3671: }
3672:
1.340 schwarze 3673: static int
1.303 schwarze 3674: roff_ec(ROFF_ARGS)
3675: {
3676: const char *p;
3677:
3678: p = buf->buf + pos;
3679: if (*p == '\0')
3680: r->escape = '\\';
3681: else {
3682: r->escape = *p;
3683: if (*++p != '\0')
1.350 schwarze 3684: mandoc_msg(MANDOCERR_ARG_EXCESS, ln,
3685: (int)(p - buf->buf), "ec ... %s", p);
1.303 schwarze 3686: }
3687: return ROFF_IGN;
3688: }
3689:
1.340 schwarze 3690: static int
1.303 schwarze 3691: roff_eo(ROFF_ARGS)
3692: {
3693: r->escape = '\0';
3694: if (buf->buf[pos] != '\0')
1.350 schwarze 3695: mandoc_msg(MANDOCERR_ARG_SKIP,
1.303 schwarze 3696: ln, pos, "eo %s", buf->buf + pos);
1.384 schwarze 3697: return ROFF_IGN;
3698: }
3699:
3700: static int
3701: roff_mc(ROFF_ARGS)
3702: {
3703: struct roff_node *n;
3704: char *cp;
3705:
3706: /* Parse the first argument. */
3707:
3708: cp = buf->buf + pos;
3709: if (*cp != '\0')
3710: cp++;
3711: if (buf->buf[pos] == '\\') {
3712: switch (mandoc_escape((const char **)&cp, NULL, NULL)) {
3713: case ESCAPE_SPECIAL:
3714: case ESCAPE_UNICODE:
3715: case ESCAPE_NUMBERED:
3716: break;
3717: default:
3718: *cp = '\0';
3719: mandoc_msg(MANDOCERR_MC_ESC, ln, pos,
3720: "mc %s", buf->buf + pos);
3721: buf->buf[pos] = '\0';
3722: break;
3723: }
3724: }
3725:
3726: /* Ignore additional arguments. */
3727:
3728: while (*cp == ' ')
3729: *cp++ = '\0';
3730: if (*cp != '\0') {
3731: mandoc_msg(MANDOCERR_MC_DIST, ln, (int)(cp - buf->buf),
3732: "mc ... %s", cp);
3733: *cp = '\0';
3734: }
3735:
3736: /* Create the .mc node. */
3737:
3738: roff_elem_alloc(r->man, ln, ppos, tok);
3739: n = r->man->last;
3740: if (buf->buf[pos] != '\0')
3741: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
3742: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3743: r->man->last = n;
3744: r->man->next = ROFF_NEXT_SIBLING;
1.303 schwarze 3745: return ROFF_IGN;
1.330 schwarze 3746: }
3747:
1.340 schwarze 3748: static int
1.330 schwarze 3749: roff_nop(ROFF_ARGS)
3750: {
3751: while (buf->buf[pos] == ' ')
3752: pos++;
3753: *offs = pos;
3754: return ROFF_RERUN;
1.303 schwarze 3755: }
3756:
1.340 schwarze 3757: static int
1.164 kristaps 3758: roff_tr(ROFF_ARGS)
3759: {
3760: const char *p, *first, *second;
3761: size_t fsz, ssz;
3762:
1.238 schwarze 3763: p = buf->buf + pos;
1.164 kristaps 3764:
1.238 schwarze 3765: if (*p == '\0') {
1.350 schwarze 3766: mandoc_msg(MANDOCERR_REQ_EMPTY, ln, ppos, "tr");
1.277 schwarze 3767: return ROFF_IGN;
1.164 kristaps 3768: }
3769:
1.238 schwarze 3770: while (*p != '\0') {
1.164 kristaps 3771: fsz = ssz = 1;
3772:
3773: first = p++;
1.238 schwarze 3774: if (*first == '\\') {
1.394 schwarze 3775: if (mandoc_escape(&p, NULL, NULL) == ESCAPE_ERROR)
1.277 schwarze 3776: return ROFF_IGN;
1.164 kristaps 3777: fsz = (size_t)(p - first);
3778: }
3779:
3780: second = p++;
1.238 schwarze 3781: if (*second == '\\') {
1.394 schwarze 3782: if (mandoc_escape(&p, NULL, NULL) == ESCAPE_ERROR)
1.277 schwarze 3783: return ROFF_IGN;
1.164 kristaps 3784: ssz = (size_t)(p - second);
1.238 schwarze 3785: } else if (*second == '\0') {
1.350 schwarze 3786: mandoc_msg(MANDOCERR_TR_ODD, ln,
3787: (int)(first - buf->buf), "tr %s", first);
1.164 kristaps 3788: second = " ";
1.165 kristaps 3789: p--;
1.164 kristaps 3790: }
3791:
1.167 kristaps 3792: if (fsz > 1) {
1.207 schwarze 3793: roff_setstrn(&r->xmbtab, first, fsz,
3794: second, ssz, 0);
1.167 kristaps 3795: continue;
3796: }
3797:
1.238 schwarze 3798: if (r->xtab == NULL)
1.207 schwarze 3799: r->xtab = mandoc_calloc(128,
3800: sizeof(struct roffstr));
1.167 kristaps 3801:
3802: free(r->xtab[(int)*first].p);
3803: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3804: r->xtab[(int)*first].sz = ssz;
1.164 kristaps 3805: }
3806:
1.277 schwarze 3807: return ROFF_IGN;
1.164 kristaps 3808: }
3809:
1.339 schwarze 3810: /*
3811: * Implementation of the .return request.
3812: * There is no need to call roff_userret() from here.
3813: * The read module will call that after rewinding the reader stack
3814: * to the place from where the current macro was called.
3815: */
1.340 schwarze 3816: static int
1.339 schwarze 3817: roff_return(ROFF_ARGS)
3818: {
3819: if (r->mstackpos >= 0)
1.340 schwarze 3820: return ROFF_IGN | ROFF_USERRET;
1.339 schwarze 3821:
1.350 schwarze 3822: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "return");
1.339 schwarze 3823: return ROFF_IGN;
3824: }
3825:
1.340 schwarze 3826: static int
1.306 schwarze 3827: roff_rn(ROFF_ARGS)
3828: {
3829: const char *value;
3830: char *oldn, *newn, *end;
3831: size_t oldsz, newsz;
1.315 schwarze 3832: int deftype;
1.306 schwarze 3833:
3834: oldn = newn = buf->buf + pos;
3835: if (*oldn == '\0')
3836: return ROFF_IGN;
3837:
3838: oldsz = roff_getname(r, &newn, ln, pos);
1.363 schwarze 3839: if (oldn[oldsz] == '\\' || oldn[oldsz] == '\t' || *newn == '\0')
1.306 schwarze 3840: return ROFF_IGN;
3841:
3842: end = newn;
3843: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3844: if (newsz == 0)
3845: return ROFF_IGN;
3846:
1.315 schwarze 3847: deftype = ROFFDEF_ANY;
3848: value = roff_getstrn(r, oldn, oldsz, &deftype);
3849: switch (deftype) {
3850: case ROFFDEF_USER:
1.306 schwarze 3851: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3852: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3853: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.315 schwarze 3854: break;
3855: case ROFFDEF_PRE:
3856: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3857: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3858: break;
3859: case ROFFDEF_REN:
1.306 schwarze 3860: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3861: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.315 schwarze 3862: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3863: break;
3864: case ROFFDEF_STD:
1.306 schwarze 3865: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.315 schwarze 3866: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3867: break;
3868: default:
3869: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3870: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3871: break;
3872: }
1.306 schwarze 3873: return ROFF_IGN;
3874: }
3875:
1.340 schwarze 3876: static int
1.339 schwarze 3877: roff_shift(ROFF_ARGS)
3878: {
3879: struct mctx *ctx;
1.382 schwarze 3880: int argpos, levels, i;
1.339 schwarze 3881:
1.382 schwarze 3882: argpos = pos;
1.339 schwarze 3883: levels = 1;
3884: if (buf->buf[pos] != '\0' &&
3885: roff_evalnum(r, ln, buf->buf, &pos, &levels, 0) == 0) {
1.350 schwarze 3886: mandoc_msg(MANDOCERR_CE_NONUM,
1.339 schwarze 3887: ln, pos, "shift %s", buf->buf + pos);
3888: levels = 1;
3889: }
3890: if (r->mstackpos < 0) {
1.350 schwarze 3891: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "shift");
1.339 schwarze 3892: return ROFF_IGN;
3893: }
3894: ctx = r->mstack + r->mstackpos;
3895: if (levels > ctx->argc) {
1.350 schwarze 3896: mandoc_msg(MANDOCERR_SHIFT,
1.382 schwarze 3897: ln, argpos, "%d, but max is %d", levels, ctx->argc);
1.339 schwarze 3898: levels = ctx->argc;
1.382 schwarze 3899: }
3900: if (levels < 0) {
3901: mandoc_msg(MANDOCERR_ARG_NEG, ln, argpos, "shift %d", levels);
3902: levels = 0;
1.339 schwarze 3903: }
3904: if (levels == 0)
3905: return ROFF_IGN;
3906: for (i = 0; i < levels; i++)
3907: free(ctx->argv[i]);
3908: ctx->argc -= levels;
3909: for (i = 0; i < ctx->argc; i++)
3910: ctx->argv[i] = ctx->argv[i + levels];
3911: return ROFF_IGN;
3912: }
3913:
1.340 schwarze 3914: static int
1.105 kristaps 3915: roff_so(ROFF_ARGS)
3916: {
1.249 schwarze 3917: char *name, *cp;
1.105 kristaps 3918:
1.238 schwarze 3919: name = buf->buf + pos;
1.350 schwarze 3920: mandoc_msg(MANDOCERR_SO, ln, ppos, "so %s", name);
1.105 kristaps 3921:
3922: /*
3923: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3924: * opening anything that's not in our cwd or anything beneath
3925: * it. Thus, explicitly disallow traversing up the file-system
3926: * or using absolute paths.
3927: */
3928:
1.238 schwarze 3929: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.350 schwarze 3930: mandoc_msg(MANDOCERR_SO_PATH, ln, ppos, ".so %s", name);
1.249 schwarze 3931: buf->sz = mandoc_asprintf(&cp,
3932: ".sp\nSee the file %s.\n.sp", name) + 1;
3933: free(buf->buf);
3934: buf->buf = cp;
3935: *offs = 0;
1.277 schwarze 3936: return ROFF_REPARSE;
1.105 kristaps 3937: }
3938:
3939: *offs = pos;
1.277 schwarze 3940: return ROFF_SO;
1.105 kristaps 3941: }
1.92 schwarze 3942:
1.266 schwarze 3943: /* --- user defined strings and macros ------------------------------------ */
3944:
1.340 schwarze 3945: static int
1.106 kristaps 3946: roff_userdef(ROFF_ARGS)
1.99 kristaps 3947: {
1.339 schwarze 3948: struct mctx *ctx;
3949: char *arg, *ap, *dst, *src;
3950: size_t sz;
3951:
1.365 schwarze 3952: /* If the macro is empty, ignore it altogether. */
3953:
3954: if (*r->current_string == '\0')
3955: return ROFF_IGN;
3956:
1.339 schwarze 3957: /* Initialize a new macro stack context. */
3958:
3959: if (++r->mstackpos == r->mstacksz) {
3960: r->mstack = mandoc_recallocarray(r->mstack,
3961: r->mstacksz, r->mstacksz + 8, sizeof(*r->mstack));
3962: r->mstacksz += 8;
3963: }
3964: ctx = r->mstack + r->mstackpos;
3965: ctx->argc = 0;
3966:
3967: /*
3968: * Collect pointers to macro argument strings,
3969: * NUL-terminating them and escaping quotes.
3970: */
3971:
3972: src = buf->buf + pos;
3973: while (*src != '\0') {
3974: if (ctx->argc == ctx->argsz) {
3975: ctx->argsz += 8;
3976: ctx->argv = mandoc_reallocarray(ctx->argv,
3977: ctx->argsz, sizeof(*ctx->argv));
3978: }
1.355 schwarze 3979: arg = roff_getarg(r, &src, ln, &pos);
1.339 schwarze 3980: sz = 1; /* For the terminating NUL. */
3981: for (ap = arg; *ap != '\0'; ap++)
3982: sz += *ap == '"' ? 4 : 1;
3983: ctx->argv[ctx->argc++] = dst = mandoc_malloc(sz);
3984: for (ap = arg; *ap != '\0'; ap++) {
3985: if (*ap == '"') {
3986: memcpy(dst, "\\(dq", 4);
3987: dst += 4;
3988: } else
3989: *dst++ = *ap;
1.106 kristaps 3990: }
1.339 schwarze 3991: *dst = '\0';
1.355 schwarze 3992: free(arg);
1.337 schwarze 3993: }
3994:
1.339 schwarze 3995: /* Replace the macro invocation by the macro definition. */
1.263 schwarze 3996:
1.238 schwarze 3997: free(buf->buf);
1.339 schwarze 3998: buf->buf = mandoc_strdup(r->current_string);
3999: buf->sz = strlen(buf->buf) + 1;
1.248 schwarze 4000: *offs = 0;
1.106 kristaps 4001:
1.365 schwarze 4002: return buf->buf[buf->sz - 2] == '\n' ?
1.340 schwarze 4003: ROFF_REPARSE | ROFF_USERCALL : ROFF_IGN | ROFF_APPEND;
1.99 kristaps 4004: }
1.121 schwarze 4005:
1.306 schwarze 4006: /*
4007: * Calling a high-level macro that was renamed with .rn.
4008: * r->current_string has already been set up by roff_parse().
4009: */
1.340 schwarze 4010: static int
1.306 schwarze 4011: roff_renamed(ROFF_ARGS)
4012: {
4013: char *nbuf;
4014:
1.315 schwarze 4015: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
4016: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.306 schwarze 4017: free(buf->buf);
4018: buf->buf = nbuf;
1.329 schwarze 4019: *offs = 0;
1.306 schwarze 4020: return ROFF_CONT;
4021: }
4022:
1.362 schwarze 4023: /*
4024: * Measure the length in bytes of the roff identifier at *cpp
4025: * and advance the pointer to the next word.
4026: */
1.212 schwarze 4027: static size_t
1.121 schwarze 4028: roff_getname(struct roff *r, char **cpp, int ln, int pos)
4029: {
4030: char *name, *cp;
1.393 schwarze 4031: int namesz, inam, iend;
1.121 schwarze 4032:
4033: name = *cpp;
1.362 schwarze 4034: if (*name == '\0')
1.277 schwarze 4035: return 0;
1.121 schwarze 4036:
1.362 schwarze 4037: /* Advance cp to the byte after the end of the name. */
4038:
1.393 schwarze 4039: cp = name;
4040: namesz = 0;
4041: for (;;) {
1.363 schwarze 4042: if (*cp == '\0')
1.212 schwarze 4043: break;
1.363 schwarze 4044: if (*cp == ' ' || *cp == '\t') {
4045: cp++;
4046: break;
4047: }
1.393 schwarze 4048: if (*cp != '\\') {
4049: if (name + namesz < cp) {
4050: name[namesz] = *cp;
4051: *cp = ' ';
4052: }
4053: namesz++;
4054: cp++;
1.121 schwarze 4055: continue;
1.393 schwarze 4056: }
1.362 schwarze 4057: if (cp[1] == '{' || cp[1] == '}')
1.215 schwarze 4058: break;
1.393 schwarze 4059: if (roff_escape(cp, 0, 0, NULL, &inam,
4060: NULL, NULL, &iend) != ESCAPE_UNDEF) {
4061: mandoc_msg(MANDOCERR_NAMESC, ln, pos,
4062: "%.*s%.*s", namesz, name, iend, cp);
4063: cp += iend;
4064: break;
4065: }
4066:
4067: /*
4068: * In an identifier, \\, \., \G and so on
4069: * are reduced to \, ., G and so on,
4070: * vaguely similar to copy mode.
4071: */
4072:
4073: name[namesz++] = cp[inam];
4074: while (iend--) {
4075: if (cp >= name + namesz)
4076: *cp = ' ';
4077: cp++;
4078: }
1.121 schwarze 4079: }
4080:
4081: /* Read past spaces. */
1.362 schwarze 4082:
4083: while (*cp == ' ')
1.121 schwarze 4084: cp++;
4085:
4086: *cpp = cp;
1.277 schwarze 4087: return namesz;
1.121 schwarze 4088: }
4089:
1.106 kristaps 4090: /*
4091: * Store *string into the user-defined string called *name.
4092: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.193 schwarze 4093: * append == 0: replace mode
4094: * append == 1: single-line append mode
4095: * append == 2: multiline append mode, append '\n' after each call
1.106 kristaps 4096: */
1.94 kristaps 4097: static void
1.106 kristaps 4098: roff_setstr(struct roff *r, const char *name, const char *string,
1.193 schwarze 4099: int append)
1.92 schwarze 4100: {
1.315 schwarze 4101: size_t namesz;
1.164 kristaps 4102:
1.315 schwarze 4103: namesz = strlen(name);
4104: roff_setstrn(&r->strtab, name, namesz, string,
1.207 schwarze 4105: string ? strlen(string) : 0, append);
1.315 schwarze 4106: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.164 kristaps 4107: }
4108:
4109: static void
1.166 kristaps 4110: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.193 schwarze 4111: const char *string, size_t stringsz, int append)
1.164 kristaps 4112: {
1.166 kristaps 4113: struct roffkv *n;
1.164 kristaps 4114: char *c;
4115: int i;
4116: size_t oldch, newch;
1.92 schwarze 4117:
1.106 kristaps 4118: /* Search for an existing string with the same name. */
1.164 kristaps 4119: n = *r;
4120:
1.211 schwarze 4121: while (n && (namesz != n->key.sz ||
4122: strncmp(n->key.p, name, namesz)))
1.92 schwarze 4123: n = n->next;
1.94 kristaps 4124:
4125: if (NULL == n) {
1.106 kristaps 4126: /* Create a new string table entry. */
1.166 kristaps 4127: n = mandoc_malloc(sizeof(struct roffkv));
4128: n->key.p = mandoc_strndup(name, namesz);
4129: n->key.sz = namesz;
4130: n->val.p = NULL;
4131: n->val.sz = 0;
1.164 kristaps 4132: n->next = *r;
4133: *r = n;
1.193 schwarze 4134: } else if (0 == append) {
1.166 kristaps 4135: free(n->val.p);
4136: n->val.p = NULL;
4137: n->val.sz = 0;
1.106 kristaps 4138: }
4139:
4140: if (NULL == string)
4141: return;
4142:
4143: /*
4144: * One additional byte for the '\n' in multiline mode,
4145: * and one for the terminating '\0'.
4146: */
1.193 schwarze 4147: newch = stringsz + (1 < append ? 2u : 1u);
1.164 kristaps 4148:
1.166 kristaps 4149: if (NULL == n->val.p) {
4150: n->val.p = mandoc_malloc(newch);
4151: *n->val.p = '\0';
1.106 kristaps 4152: oldch = 0;
4153: } else {
1.166 kristaps 4154: oldch = n->val.sz;
4155: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.106 kristaps 4156: }
4157:
4158: /* Skip existing content in the destination buffer. */
1.166 kristaps 4159: c = n->val.p + (int)oldch;
1.106 kristaps 4160:
4161: /* Append new content to the destination buffer. */
1.164 kristaps 4162: i = 0;
4163: while (i < (int)stringsz) {
1.106 kristaps 4164: /*
4165: * Rudimentary roff copy mode:
4166: * Handle escaped backslashes.
4167: */
1.164 kristaps 4168: if ('\\' == string[i] && '\\' == string[i + 1])
4169: i++;
4170: *c++ = string[i++];
1.106 kristaps 4171: }
1.94 kristaps 4172:
1.106 kristaps 4173: /* Append terminating bytes. */
1.193 schwarze 4174: if (1 < append)
1.106 kristaps 4175: *c++ = '\n';
1.163 kristaps 4176:
1.106 kristaps 4177: *c = '\0';
1.166 kristaps 4178: n->val.sz = (int)(c - n->val.p);
1.92 schwarze 4179: }
4180:
1.94 kristaps 4181: static const char *
1.325 schwarze 4182: roff_getstrn(struct roff *r, const char *name, size_t len,
1.315 schwarze 4183: int *deftype)
1.92 schwarze 4184: {
1.315 schwarze 4185: const struct roffkv *n;
1.325 schwarze 4186: int found, i;
1.315 schwarze 4187: enum roff_tok tok;
4188:
1.325 schwarze 4189: found = 0;
4190: for (n = r->strtab; n != NULL; n = n->next) {
4191: if (strncmp(name, n->key.p, len) != 0 ||
4192: n->key.p[len] != '\0' || n->val.p == NULL)
4193: continue;
4194: if (*deftype & ROFFDEF_USER) {
4195: *deftype = ROFFDEF_USER;
4196: return n->val.p;
4197: } else {
4198: found = 1;
4199: break;
4200: }
4201: }
4202: for (n = r->rentab; n != NULL; n = n->next) {
4203: if (strncmp(name, n->key.p, len) != 0 ||
4204: n->key.p[len] != '\0' || n->val.p == NULL)
4205: continue;
4206: if (*deftype & ROFFDEF_REN) {
4207: *deftype = ROFFDEF_REN;
4208: return n->val.p;
4209: } else {
4210: found = 1;
4211: break;
1.315 schwarze 4212: }
4213: }
1.325 schwarze 4214: for (i = 0; i < PREDEFS_MAX; i++) {
4215: if (strncmp(name, predefs[i].name, len) != 0 ||
4216: predefs[i].name[len] != '\0')
4217: continue;
4218: if (*deftype & ROFFDEF_PRE) {
4219: *deftype = ROFFDEF_PRE;
4220: return predefs[i].str;
4221: } else {
4222: found = 1;
4223: break;
1.315 schwarze 4224: }
4225: }
1.356 schwarze 4226: if (r->man->meta.macroset != MACROSET_MAN) {
1.325 schwarze 4227: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
4228: if (strncmp(name, roff_name[tok], len) != 0 ||
4229: roff_name[tok][len] != '\0')
4230: continue;
4231: if (*deftype & ROFFDEF_STD) {
4232: *deftype = ROFFDEF_STD;
4233: return NULL;
4234: } else {
4235: found = 1;
4236: break;
1.315 schwarze 4237: }
4238: }
4239: }
1.356 schwarze 4240: if (r->man->meta.macroset != MACROSET_MDOC) {
1.325 schwarze 4241: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
4242: if (strncmp(name, roff_name[tok], len) != 0 ||
4243: roff_name[tok][len] != '\0')
4244: continue;
4245: if (*deftype & ROFFDEF_STD) {
4246: *deftype = ROFFDEF_STD;
4247: return NULL;
4248: } else {
4249: found = 1;
4250: break;
1.315 schwarze 4251: }
4252: }
1.325 schwarze 4253: }
4254:
4255: if (found == 0 && *deftype != ROFFDEF_ANY) {
4256: if (*deftype & ROFFDEF_REN) {
4257: /*
4258: * This might still be a request,
4259: * so do not treat it as undefined yet.
4260: */
4261: *deftype = ROFFDEF_UNDEF;
4262: return NULL;
1.315 schwarze 4263: }
1.325 schwarze 4264:
4265: /* Using an undefined string defines it to be empty. */
4266:
4267: roff_setstrn(&r->strtab, name, len, "", 0, 0);
4268: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.315 schwarze 4269: }
1.325 schwarze 4270:
1.315 schwarze 4271: *deftype = 0;
1.277 schwarze 4272: return NULL;
1.92 schwarze 4273: }
4274:
1.94 kristaps 4275: static void
1.167 kristaps 4276: roff_freestr(struct roffkv *r)
1.92 schwarze 4277: {
1.166 kristaps 4278: struct roffkv *n, *nn;
1.92 schwarze 4279:
1.167 kristaps 4280: for (n = r; n; n = nn) {
1.166 kristaps 4281: free(n->key.p);
4282: free(n->val.p);
1.92 schwarze 4283: nn = n->next;
4284: free(n);
4285: }
1.114 kristaps 4286: }
1.266 schwarze 4287:
4288: /* --- accessors and utility functions ------------------------------------ */
1.164 kristaps 4289:
4290: /*
4291: * Duplicate an input string, making the appropriate character
4292: * conversations (as stipulated by `tr') along the way.
4293: * Returns a heap-allocated string with all the replacements made.
4294: */
4295: char *
4296: roff_strdup(const struct roff *r, const char *p)
4297: {
1.166 kristaps 4298: const struct roffkv *cp;
1.164 kristaps 4299: char *res;
4300: const char *pp;
4301: size_t ssz, sz;
4302: enum mandoc_esc esc;
4303:
1.167 kristaps 4304: if (NULL == r->xmbtab && NULL == r->xtab)
1.277 schwarze 4305: return mandoc_strdup(p);
1.164 kristaps 4306: else if ('\0' == *p)
1.277 schwarze 4307: return mandoc_strdup("");
1.164 kristaps 4308:
4309: /*
4310: * Step through each character looking for term matches
4311: * (remember that a `tr' can be invoked with an escape, which is
4312: * a glyph but the escape is multi-character).
4313: * We only do this if the character hash has been initialised
4314: * and the string is >0 length.
4315: */
4316:
4317: res = NULL;
4318: ssz = 0;
4319:
4320: while ('\0' != *p) {
1.289 schwarze 4321: assert((unsigned int)*p < 128);
4322: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.167 kristaps 4323: sz = r->xtab[(int)*p].sz;
4324: res = mandoc_realloc(res, ssz + sz + 1);
4325: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
4326: ssz += sz;
4327: p++;
4328: continue;
4329: } else if ('\\' != *p) {
4330: res = mandoc_realloc(res, ssz + 2);
4331: res[ssz++] = *p++;
4332: continue;
4333: }
4334:
1.164 kristaps 4335: /* Search for term matches. */
1.167 kristaps 4336: for (cp = r->xmbtab; cp; cp = cp->next)
1.166 kristaps 4337: if (0 == strncmp(p, cp->key.p, cp->key.sz))
1.164 kristaps 4338: break;
4339:
4340: if (NULL != cp) {
4341: /*
4342: * A match has been found.
4343: * Append the match to the array and move
4344: * forward by its keysize.
4345: */
1.207 schwarze 4346: res = mandoc_realloc(res,
4347: ssz + cp->val.sz + 1);
1.166 kristaps 4348: memcpy(res + ssz, cp->val.p, cp->val.sz);
4349: ssz += cp->val.sz;
4350: p += (int)cp->key.sz;
1.164 kristaps 4351: continue;
4352: }
4353:
1.167 kristaps 4354: /*
4355: * Handle escapes carefully: we need to copy
4356: * over just the escape itself, or else we might
4357: * do replacements within the escape itself.
4358: * Make sure to pass along the bogus string.
4359: */
4360: pp = p++;
4361: esc = mandoc_escape(&p, NULL, NULL);
4362: if (ESCAPE_ERROR == esc) {
4363: sz = strlen(pp);
1.164 kristaps 4364: res = mandoc_realloc(res, ssz + sz + 1);
4365: memcpy(res + ssz, pp, sz);
1.167 kristaps 4366: break;
1.164 kristaps 4367: }
1.207 schwarze 4368: /*
4369: * We bail out on bad escapes.
1.167 kristaps 4370: * No need to warn: we already did so when
1.355 schwarze 4371: * roff_expand() was called.
1.167 kristaps 4372: */
4373: sz = (int)(p - pp);
4374: res = mandoc_realloc(res, ssz + sz + 1);
4375: memcpy(res + ssz, pp, sz);
4376: ssz += sz;
1.164 kristaps 4377: }
4378:
4379: res[(int)ssz] = '\0';
1.277 schwarze 4380: return res;
1.227 schwarze 4381: }
4382:
4383: int
4384: roff_getformat(const struct roff *r)
4385: {
4386:
1.277 schwarze 4387: return r->format;
1.174 kristaps 4388: }
4389:
4390: /*
1.207 schwarze 4391: * Find out whether a line is a macro line or not.
1.174 kristaps 4392: * If it is, adjust the current position and return one; if it isn't,
4393: * return zero and don't change the current position.
4394: * If the control character has been set with `.cc', then let that grain
4395: * precedence.
1.396 schwarze 4396: * This is slightly contrary to groff, where using the non-breaking
1.174 kristaps 4397: * control character when `cc' has been invoked will cause the
4398: * non-breaking macro contents to be printed verbatim.
4399: */
4400: int
4401: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
4402: {
4403: int pos;
4404:
4405: pos = *ppos;
4406:
1.303 schwarze 4407: if (r->control != '\0' && cp[pos] == r->control)
1.174 kristaps 4408: pos++;
1.303 schwarze 4409: else if (r->control != '\0')
1.277 schwarze 4410: return 0;
1.174 kristaps 4411: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
4412: pos += 2;
4413: else if ('.' == cp[pos] || '\'' == cp[pos])
4414: pos++;
4415: else
1.277 schwarze 4416: return 0;
1.174 kristaps 4417:
4418: while (' ' == cp[pos] || '\t' == cp[pos])
4419: pos++;
4420:
4421: *ppos = pos;
1.277 schwarze 4422: return 1;
1.74 kristaps 4423: }
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