Annotation of src/usr.bin/mandoc/mdoc_argv.c, Revision 1.76
1.76 ! schwarze 1: /* $OpenBSD: mdoc_argv.c,v 1.75 2018/12/21 16:58:49 schwarze Exp $ */
1.1 kristaps 2: /*
1.36 schwarze 3: * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
1.76 ! schwarze 4: * Copyright (c) 2012, 2014-2019 Ingo Schwarze <schwarze@openbsd.org>
1.1 kristaps 5: *
6: * Permission to use, copy, modify, and distribute this software for any
1.2 schwarze 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: *
1.57 schwarze 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.2 schwarze 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.57 schwarze 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.2 schwarze 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.
1.1 kristaps 17: */
18: #include <sys/types.h>
19:
20: #include <assert.h>
21: #include <stdlib.h>
22: #include <stdio.h>
23: #include <string.h>
24:
1.57 schwarze 25: #include "mandoc_aux.h"
26: #include "mandoc.h"
27: #include "roff.h"
1.37 schwarze 28: #include "mdoc.h"
1.57 schwarze 29: #include "libmandoc.h"
1.64 schwarze 30: #include "roff_int.h"
1.1 kristaps 31: #include "libmdoc.h"
32:
1.36 schwarze 33: #define MULTI_STEP 5 /* pre-allocate argument values */
1.49 schwarze 34: #define DELIMSZ 6 /* max possible size of a delimiter */
1.38 schwarze 35:
36: enum argsflag {
37: ARGSFL_NONE = 0,
38: ARGSFL_DELIM, /* handle delimiters of [[::delim::][ ]+]+ */
39: ARGSFL_TABSEP /* handle tab/`Ta' separated phrases */
40: };
41:
42: enum argvflag {
43: ARGV_NONE, /* no args to flag (e.g., -split) */
44: ARGV_SINGLE, /* one arg to flag (e.g., -file xxx) */
1.40 schwarze 45: ARGV_MULTI /* multiple args (e.g., -column xxx yyy) */
1.38 schwarze 46: };
1.1 kristaps 47:
1.39 schwarze 48: struct mdocarg {
49: enum argsflag flags;
50: const enum mdocargt *argvs;
51: };
52:
53: static void argn_free(struct mdoc_arg *, int);
1.59 schwarze 54: static enum margserr args(struct roff_man *, int, int *,
1.38 schwarze 55: char *, enum argsflag, char **);
56: static int args_checkpunct(const char *, int);
1.59 schwarze 57: static void argv_multi(struct roff_man *, int,
1.1 kristaps 58: struct mdoc_argv *, int *, char *);
1.59 schwarze 59: static void argv_single(struct roff_man *, int,
1.1 kristaps 60: struct mdoc_argv *, int *, char *);
61:
1.36 schwarze 62: static const enum argvflag argvflags[MDOC_ARG_MAX] = {
1.1 kristaps 63: ARGV_NONE, /* MDOC_Split */
64: ARGV_NONE, /* MDOC_Nosplit */
65: ARGV_NONE, /* MDOC_Ragged */
66: ARGV_NONE, /* MDOC_Unfilled */
67: ARGV_NONE, /* MDOC_Literal */
1.17 schwarze 68: ARGV_SINGLE, /* MDOC_File */
1.40 schwarze 69: ARGV_SINGLE, /* MDOC_Offset */
1.1 kristaps 70: ARGV_NONE, /* MDOC_Bullet */
71: ARGV_NONE, /* MDOC_Dash */
72: ARGV_NONE, /* MDOC_Hyphen */
73: ARGV_NONE, /* MDOC_Item */
74: ARGV_NONE, /* MDOC_Enum */
75: ARGV_NONE, /* MDOC_Tag */
76: ARGV_NONE, /* MDOC_Diag */
77: ARGV_NONE, /* MDOC_Hang */
78: ARGV_NONE, /* MDOC_Ohang */
79: ARGV_NONE, /* MDOC_Inset */
80: ARGV_MULTI, /* MDOC_Column */
81: ARGV_SINGLE, /* MDOC_Width */
82: ARGV_NONE, /* MDOC_Compact */
1.14 schwarze 83: ARGV_NONE, /* MDOC_Std */
1.1 kristaps 84: ARGV_NONE, /* MDOC_Filled */
85: ARGV_NONE, /* MDOC_Words */
86: ARGV_NONE, /* MDOC_Emphasis */
87: ARGV_NONE, /* MDOC_Symbolic */
88: ARGV_NONE /* MDOC_Symbolic */
89: };
90:
1.37 schwarze 91: static const enum mdocargt args_Ex[] = {
92: MDOC_Std,
93: MDOC_ARG_MAX
94: };
95:
96: static const enum mdocargt args_An[] = {
97: MDOC_Split,
98: MDOC_Nosplit,
99: MDOC_ARG_MAX
100: };
101:
102: static const enum mdocargt args_Bd[] = {
103: MDOC_Ragged,
104: MDOC_Unfilled,
105: MDOC_Filled,
106: MDOC_Literal,
107: MDOC_File,
108: MDOC_Offset,
109: MDOC_Compact,
110: MDOC_Centred,
111: MDOC_ARG_MAX
112: };
113:
114: static const enum mdocargt args_Bf[] = {
115: MDOC_Emphasis,
116: MDOC_Literal,
117: MDOC_Symbolic,
118: MDOC_ARG_MAX
119: };
120:
121: static const enum mdocargt args_Bk[] = {
122: MDOC_Words,
123: MDOC_ARG_MAX
124: };
125:
126: static const enum mdocargt args_Bl[] = {
127: MDOC_Bullet,
128: MDOC_Dash,
129: MDOC_Hyphen,
130: MDOC_Item,
131: MDOC_Enum,
132: MDOC_Tag,
133: MDOC_Diag,
134: MDOC_Hang,
135: MDOC_Ohang,
136: MDOC_Inset,
137: MDOC_Column,
138: MDOC_Width,
139: MDOC_Offset,
140: MDOC_Compact,
141: MDOC_Nested,
142: MDOC_ARG_MAX
143: };
144:
1.72 schwarze 145: static const struct mdocarg mdocargs[MDOC_MAX - MDOC_Dd] = {
1.39 schwarze 146: { ARGSFL_NONE, NULL }, /* Dd */
147: { ARGSFL_NONE, NULL }, /* Dt */
148: { ARGSFL_NONE, NULL }, /* Os */
149: { ARGSFL_NONE, NULL }, /* Sh */
1.49 schwarze 150: { ARGSFL_NONE, NULL }, /* Ss */
151: { ARGSFL_NONE, NULL }, /* Pp */
1.39 schwarze 152: { ARGSFL_DELIM, NULL }, /* D1 */
153: { ARGSFL_DELIM, NULL }, /* Dl */
154: { ARGSFL_NONE, args_Bd }, /* Bd */
155: { ARGSFL_NONE, NULL }, /* Ed */
156: { ARGSFL_NONE, args_Bl }, /* Bl */
157: { ARGSFL_NONE, NULL }, /* El */
158: { ARGSFL_NONE, NULL }, /* It */
1.49 schwarze 159: { ARGSFL_DELIM, NULL }, /* Ad */
1.39 schwarze 160: { ARGSFL_DELIM, args_An }, /* An */
1.67 schwarze 161: { ARGSFL_DELIM, NULL }, /* Ap */
1.39 schwarze 162: { ARGSFL_DELIM, NULL }, /* Ar */
1.43 schwarze 163: { ARGSFL_DELIM, NULL }, /* Cd */
1.39 schwarze 164: { ARGSFL_DELIM, NULL }, /* Cm */
1.49 schwarze 165: { ARGSFL_DELIM, NULL }, /* Dv */
166: { ARGSFL_DELIM, NULL }, /* Er */
167: { ARGSFL_DELIM, NULL }, /* Ev */
1.39 schwarze 168: { ARGSFL_NONE, args_Ex }, /* Ex */
1.49 schwarze 169: { ARGSFL_DELIM, NULL }, /* Fa */
170: { ARGSFL_NONE, NULL }, /* Fd */
1.39 schwarze 171: { ARGSFL_DELIM, NULL }, /* Fl */
1.49 schwarze 172: { ARGSFL_DELIM, NULL }, /* Fn */
173: { ARGSFL_DELIM, NULL }, /* Ft */
174: { ARGSFL_DELIM, NULL }, /* Ic */
175: { ARGSFL_DELIM, NULL }, /* In */
1.39 schwarze 176: { ARGSFL_DELIM, NULL }, /* Li */
1.49 schwarze 177: { ARGSFL_NONE, NULL }, /* Nd */
178: { ARGSFL_DELIM, NULL }, /* Nm */
1.39 schwarze 179: { ARGSFL_DELIM, NULL }, /* Op */
1.51 schwarze 180: { ARGSFL_DELIM, NULL }, /* Ot */
1.39 schwarze 181: { ARGSFL_DELIM, NULL }, /* Pa */
182: { ARGSFL_NONE, args_Ex }, /* Rv */
1.49 schwarze 183: { ARGSFL_DELIM, NULL }, /* St */
1.39 schwarze 184: { ARGSFL_DELIM, NULL }, /* Va */
1.49 schwarze 185: { ARGSFL_DELIM, NULL }, /* Vt */
1.39 schwarze 186: { ARGSFL_DELIM, NULL }, /* Xr */
187: { ARGSFL_NONE, NULL }, /* %A */
188: { ARGSFL_NONE, NULL }, /* %B */
189: { ARGSFL_NONE, NULL }, /* %D */
190: { ARGSFL_NONE, NULL }, /* %I */
191: { ARGSFL_NONE, NULL }, /* %J */
192: { ARGSFL_NONE, NULL }, /* %N */
193: { ARGSFL_NONE, NULL }, /* %O */
194: { ARGSFL_NONE, NULL }, /* %P */
195: { ARGSFL_NONE, NULL }, /* %R */
196: { ARGSFL_NONE, NULL }, /* %T */
197: { ARGSFL_NONE, NULL }, /* %V */
198: { ARGSFL_DELIM, NULL }, /* Ac */
199: { ARGSFL_NONE, NULL }, /* Ao */
200: { ARGSFL_DELIM, NULL }, /* Aq */
201: { ARGSFL_DELIM, NULL }, /* At */
202: { ARGSFL_DELIM, NULL }, /* Bc */
1.49 schwarze 203: { ARGSFL_NONE, args_Bf }, /* Bf */
1.39 schwarze 204: { ARGSFL_NONE, NULL }, /* Bo */
205: { ARGSFL_DELIM, NULL }, /* Bq */
206: { ARGSFL_DELIM, NULL }, /* Bsx */
207: { ARGSFL_DELIM, NULL }, /* Bx */
208: { ARGSFL_NONE, NULL }, /* Db */
209: { ARGSFL_DELIM, NULL }, /* Dc */
210: { ARGSFL_NONE, NULL }, /* Do */
211: { ARGSFL_DELIM, NULL }, /* Dq */
212: { ARGSFL_DELIM, NULL }, /* Ec */
213: { ARGSFL_NONE, NULL }, /* Ef */
1.49 schwarze 214: { ARGSFL_DELIM, NULL }, /* Em */
1.39 schwarze 215: { ARGSFL_NONE, NULL }, /* Eo */
216: { ARGSFL_DELIM, NULL }, /* Fx */
217: { ARGSFL_DELIM, NULL }, /* Ms */
218: { ARGSFL_DELIM, NULL }, /* No */
219: { ARGSFL_DELIM, NULL }, /* Ns */
220: { ARGSFL_DELIM, NULL }, /* Nx */
221: { ARGSFL_DELIM, NULL }, /* Ox */
222: { ARGSFL_DELIM, NULL }, /* Pc */
223: { ARGSFL_DELIM, NULL }, /* Pf */
224: { ARGSFL_NONE, NULL }, /* Po */
225: { ARGSFL_DELIM, NULL }, /* Pq */
226: { ARGSFL_DELIM, NULL }, /* Qc */
227: { ARGSFL_DELIM, NULL }, /* Ql */
228: { ARGSFL_NONE, NULL }, /* Qo */
229: { ARGSFL_DELIM, NULL }, /* Qq */
230: { ARGSFL_NONE, NULL }, /* Re */
231: { ARGSFL_NONE, NULL }, /* Rs */
232: { ARGSFL_DELIM, NULL }, /* Sc */
233: { ARGSFL_NONE, NULL }, /* So */
234: { ARGSFL_DELIM, NULL }, /* Sq */
235: { ARGSFL_NONE, NULL }, /* Sm */
236: { ARGSFL_DELIM, NULL }, /* Sx */
237: { ARGSFL_DELIM, NULL }, /* Sy */
238: { ARGSFL_DELIM, NULL }, /* Tn */
239: { ARGSFL_DELIM, NULL }, /* Ux */
240: { ARGSFL_DELIM, NULL }, /* Xc */
241: { ARGSFL_NONE, NULL }, /* Xo */
1.49 schwarze 242: { ARGSFL_NONE, NULL }, /* Fo */
243: { ARGSFL_DELIM, NULL }, /* Fc */
1.39 schwarze 244: { ARGSFL_NONE, NULL }, /* Oo */
245: { ARGSFL_DELIM, NULL }, /* Oc */
246: { ARGSFL_NONE, args_Bk }, /* Bk */
247: { ARGSFL_NONE, NULL }, /* Ek */
248: { ARGSFL_NONE, NULL }, /* Bt */
249: { ARGSFL_NONE, NULL }, /* Hf */
1.51 schwarze 250: { ARGSFL_DELIM, NULL }, /* Fr */
1.39 schwarze 251: { ARGSFL_NONE, NULL }, /* Ud */
1.43 schwarze 252: { ARGSFL_DELIM, NULL }, /* Lb */
1.39 schwarze 253: { ARGSFL_NONE, NULL }, /* Lp */
254: { ARGSFL_DELIM, NULL }, /* Lk */
255: { ARGSFL_DELIM, NULL }, /* Mt */
256: { ARGSFL_DELIM, NULL }, /* Brq */
257: { ARGSFL_NONE, NULL }, /* Bro */
258: { ARGSFL_DELIM, NULL }, /* Brc */
259: { ARGSFL_NONE, NULL }, /* %C */
260: { ARGSFL_NONE, NULL }, /* Es */
1.51 schwarze 261: { ARGSFL_DELIM, NULL }, /* En */
1.45 schwarze 262: { ARGSFL_DELIM, NULL }, /* Dx */
1.39 schwarze 263: { ARGSFL_NONE, NULL }, /* %Q */
264: { ARGSFL_NONE, NULL }, /* %U */
265: { ARGSFL_NONE, NULL }, /* Ta */
266: };
267:
268:
1.1 kristaps 269: /*
1.54 schwarze 270: * Parse flags and their arguments from the input line.
271: * These come in the form -flag [argument ...].
272: * Some flags take no argument, some one, some multiple.
1.1 kristaps 273: */
1.54 schwarze 274: void
1.67 schwarze 275: mdoc_argv(struct roff_man *mdoc, int line, enum roff_tok tok,
1.54 schwarze 276: struct mdoc_arg **reta, int *pos, char *buf)
1.1 kristaps 277: {
1.54 schwarze 278: struct mdoc_argv tmpv;
279: struct mdoc_argv **retv;
280: const enum mdocargt *argtable;
281: char *argname;
282: int ipos, retc;
283: char savechar;
1.1 kristaps 284:
1.54 schwarze 285: *reta = NULL;
1.1 kristaps 286:
1.54 schwarze 287: /* Which flags does this macro support? */
1.1 kristaps 288:
1.67 schwarze 289: assert(tok >= MDOC_Dd && tok < MDOC_MAX);
1.72 schwarze 290: argtable = mdocargs[tok - MDOC_Dd].argvs;
1.54 schwarze 291: if (argtable == NULL)
292: return;
1.1 kristaps 293:
1.54 schwarze 294: /* Loop over the flags on the input line. */
295:
296: ipos = *pos;
297: while (buf[ipos] == '-') {
298:
299: /* Seek to the first unescaped space. */
1.1 kristaps 300:
1.54 schwarze 301: for (argname = buf + ++ipos; buf[ipos] != '\0'; ipos++)
302: if (buf[ipos] == ' ' && buf[ipos - 1] != '\\')
303: break;
1.1 kristaps 304:
1.54 schwarze 305: /*
306: * We want to nil-terminate the word to look it up.
307: * But we may not have a flag, in which case we need
308: * to restore the line as-is. So keep around the
309: * stray byte, which we'll reset upon exiting.
310: */
311:
312: if ((savechar = buf[ipos]) != '\0')
313: buf[ipos++] = '\0';
1.1 kristaps 314:
1.49 schwarze 315: /*
1.54 schwarze 316: * Now look up the word as a flag. Use temporary
317: * storage that we'll copy into the node's flags.
1.39 schwarze 318: */
1.1 kristaps 319:
1.54 schwarze 320: while ((tmpv.arg = *argtable++) != MDOC_ARG_MAX)
321: if ( ! strcmp(argname, mdoc_argnames[tmpv.arg]))
322: break;
323:
324: /* If it isn't a flag, restore the saved byte. */
325:
326: if (tmpv.arg == MDOC_ARG_MAX) {
327: if (savechar != '\0')
328: buf[ipos - 1] = savechar;
329: break;
330: }
331:
332: /* Read to the next word (the first argument). */
333:
334: while (buf[ipos] == ' ')
335: ipos++;
336:
337: /* Parse the arguments of the flag. */
1.39 schwarze 338:
1.54 schwarze 339: tmpv.line = line;
1.56 schwarze 340: tmpv.pos = *pos;
1.54 schwarze 341: tmpv.sz = 0;
342: tmpv.value = NULL;
1.1 kristaps 343:
1.54 schwarze 344: switch (argvflags[tmpv.arg]) {
345: case ARGV_SINGLE:
346: argv_single(mdoc, line, &tmpv, &ipos, buf);
347: break;
348: case ARGV_MULTI:
349: argv_multi(mdoc, line, &tmpv, &ipos, buf);
350: break;
351: case ARGV_NONE:
352: break;
353: }
354:
355: /* Append to the return values. */
1.1 kristaps 356:
1.54 schwarze 357: if (*reta == NULL)
358: *reta = mandoc_calloc(1, sizeof(**reta));
1.1 kristaps 359:
1.54 schwarze 360: retc = ++(*reta)->argc;
361: retv = &(*reta)->argv;
362: *retv = mandoc_reallocarray(*retv, retc, sizeof(**retv));
363: memcpy(*retv + retc - 1, &tmpv, sizeof(**retv));
1.1 kristaps 364:
1.54 schwarze 365: /* Prepare for parsing the next flag. */
1.1 kristaps 366:
1.54 schwarze 367: *pos = ipos;
1.72 schwarze 368: argtable = mdocargs[tok - MDOC_Dd].argvs;
1.54 schwarze 369: }
1.1 kristaps 370: }
371:
372: void
373: mdoc_argv_free(struct mdoc_arg *p)
374: {
1.23 schwarze 375: int i;
1.1 kristaps 376:
377: if (NULL == p)
378: return;
379:
380: if (p->refcnt) {
381: --(p->refcnt);
382: if (p->refcnt)
383: return;
384: }
385: assert(p->argc);
386:
1.24 schwarze 387: for (i = (int)p->argc - 1; i >= 0; i--)
1.37 schwarze 388: argn_free(p, i);
1.23 schwarze 389:
390: free(p->argv);
391: free(p);
392: }
393:
1.37 schwarze 394: static void
395: argn_free(struct mdoc_arg *p, int iarg)
1.23 schwarze 396: {
1.33 schwarze 397: struct mdoc_argv *arg;
1.23 schwarze 398: int j;
1.1 kristaps 399:
1.33 schwarze 400: arg = &p->argv[iarg];
401:
1.23 schwarze 402: if (arg->sz && arg->value) {
1.49 schwarze 403: for (j = (int)arg->sz - 1; j >= 0; j--)
1.23 schwarze 404: free(arg->value[j]);
405: free(arg->value);
1.1 kristaps 406: }
407:
1.23 schwarze 408: for (--p->argc; iarg < (int)p->argc; iarg++)
409: p->argv[iarg] = p->argv[iarg+1];
1.1 kristaps 410: }
411:
1.24 schwarze 412: enum margserr
1.59 schwarze 413: mdoc_args(struct roff_man *mdoc, int line, int *pos,
1.67 schwarze 414: char *buf, enum roff_tok tok, char **v)
1.1 kristaps 415: {
1.58 schwarze 416: struct roff_node *n;
1.38 schwarze 417: enum argsflag fl;
1.1 kristaps 418:
1.72 schwarze 419: fl = tok == TOKEN_NONE ? ARGSFL_NONE : mdocargs[tok - MDOC_Dd].flags;
1.12 schwarze 420:
1.30 schwarze 421: /*
422: * We know that we're in an `It', so it's reasonable to expect
423: * us to be sitting in a `Bl'. Someday this may not be the case
424: * (if we allow random `It's sitting out there), so provide a
425: * safe fall-back into the default behaviour.
1.1 kristaps 426: */
427:
1.66 schwarze 428: if (tok == MDOC_It) {
429: for (n = mdoc->last; n != NULL; n = n->parent) {
430: if (n->tok != MDOC_Bl)
431: continue;
432: if (n->norm->Bl.type == LIST_column)
1.38 schwarze 433: fl = ARGSFL_TABSEP;
1.66 schwarze 434: break;
435: }
436: }
1.1 kristaps 437:
1.61 schwarze 438: return args(mdoc, line, pos, buf, fl, v);
1.1 kristaps 439: }
440:
1.24 schwarze 441: static enum margserr
1.59 schwarze 442: args(struct roff_man *mdoc, int line, int *pos,
1.38 schwarze 443: char *buf, enum argsflag fl, char **v)
1.1 kristaps 444: {
1.62 schwarze 445: char *p;
1.75 schwarze 446: char *v_local;
1.44 schwarze 447: int pairs;
1.1 kristaps 448:
1.62 schwarze 449: if (buf[*pos] == '\0') {
450: if (mdoc->flags & MDOC_PHRASELIT &&
1.63 schwarze 451: ! (mdoc->flags & MDOC_PHRASE)) {
1.73 schwarze 452: mandoc_msg(MANDOCERR_ARG_QUOTE, line, *pos, NULL);
1.62 schwarze 453: mdoc->flags &= ~MDOC_PHRASELIT;
454: }
1.76 ! schwarze 455: mdoc->flags &= ~MDOC_PHRASEQL;
1.61 schwarze 456: return ARGS_EOLN;
1.28 schwarze 457: }
1.1 kristaps 458:
1.75 schwarze 459: if (v == NULL)
460: v = &v_local;
1.62 schwarze 461: *v = buf + *pos;
1.1 kristaps 462:
1.62 schwarze 463: if (fl == ARGSFL_DELIM && args_checkpunct(buf, *pos))
464: return ARGS_PUNCT;
1.1 kristaps 465:
1.12 schwarze 466: /*
1.62 schwarze 467: * Tabs in `It' lines in `Bl -column' can't be escaped.
468: * Phrases are reparsed for `Ta' and other macros later.
1.12 schwarze 469: */
470:
1.62 schwarze 471: if (fl == ARGSFL_TABSEP) {
472: if ((p = strchr(*v, '\t')) != NULL) {
1.63 schwarze 473:
474: /*
475: * Words right before and right after
476: * tab characters are not parsed,
477: * unless there is a blank in between.
478: */
479:
1.65 schwarze 480: if (p > buf && p[-1] != ' ')
1.63 schwarze 481: mdoc->flags |= MDOC_PHRASEQL;
482: if (p[1] != ' ')
483: mdoc->flags |= MDOC_PHRASEQN;
484:
485: /*
486: * One or more blanks after a tab cause
487: * one leading blank in the next column.
488: * So skip all but one of them.
489: */
490:
1.62 schwarze 491: *pos += (int)(p - *v) + 1;
1.63 schwarze 492: while (buf[*pos] == ' ' && buf[*pos + 1] == ' ')
1.62 schwarze 493: (*pos)++;
1.63 schwarze 494:
495: /*
496: * A tab at the end of an input line
497: * switches to the next column.
498: */
499:
500: if (buf[*pos] == '\0' || buf[*pos + 1] == '\0')
501: mdoc->flags |= MDOC_PHRASEQN;
1.25 schwarze 502: } else {
1.62 schwarze 503: p = strchr(*v, '\0');
504: if (p[-1] == ' ')
505: mandoc_msg(MANDOCERR_SPACE_EOL,
1.73 schwarze 506: line, *pos, NULL);
1.62 schwarze 507: *pos += (int)(p - *v);
1.12 schwarze 508: }
1.1 kristaps 509:
1.62 schwarze 510: /* Skip any trailing blank characters. */
511: while (p > *v && p[-1] == ' ' &&
512: (p - 1 == *v || p[-2] != '\\'))
513: p--;
514: *p = '\0';
1.1 kristaps 515:
1.63 schwarze 516: return ARGS_PHRASE;
1.46 schwarze 517: }
1.1 kristaps 518:
1.46 schwarze 519: /*
1.12 schwarze 520: * Process a quoted literal. A quote begins with a double-quote
521: * and ends with a double-quote NOT preceded by a double-quote.
1.46 schwarze 522: * NUL-terminate the literal in place.
1.44 schwarze 523: * Collapse pairs of quotes inside quoted literals.
1.12 schwarze 524: * Whitespace is NOT involved in literal termination.
525: */
1.1 kristaps 526:
1.75 schwarze 527: if (mdoc->flags & MDOC_PHRASELIT ||
528: (mdoc->flags & MDOC_PHRASE && buf[*pos] == '\"')) {
529: if ((mdoc->flags & MDOC_PHRASELIT) == 0) {
1.28 schwarze 530: *v = &buf[++(*pos)];
1.42 schwarze 531: mdoc->flags |= MDOC_PHRASELIT;
1.75 schwarze 532: }
1.44 schwarze 533: pairs = 0;
1.12 schwarze 534: for ( ; buf[*pos]; (*pos)++) {
1.44 schwarze 535: /* Move following text left after quoted quotes. */
536: if (pairs)
537: buf[*pos - pairs] = buf[*pos];
1.12 schwarze 538: if ('\"' != buf[*pos])
539: continue;
1.44 schwarze 540: /* Unquoted quotes end quoted args. */
1.12 schwarze 541: if ('\"' != buf[*pos + 1])
542: break;
1.44 schwarze 543: /* Quoted quotes collapse. */
544: pairs++;
1.12 schwarze 545: (*pos)++;
546: }
1.44 schwarze 547: if (pairs)
548: buf[*pos - pairs] = '\0';
1.1 kristaps 549:
1.63 schwarze 550: if (buf[*pos] == '\0') {
551: if ( ! (mdoc->flags & MDOC_PHRASE))
552: mandoc_msg(MANDOCERR_ARG_QUOTE,
1.73 schwarze 553: line, *pos, NULL);
1.71 schwarze 554: return ARGS_WORD;
1.12 schwarze 555: }
1.1 kristaps 556:
1.42 schwarze 557: mdoc->flags &= ~MDOC_PHRASELIT;
1.28 schwarze 558: buf[(*pos)++] = '\0';
1.1 kristaps 559:
1.28 schwarze 560: if ('\0' == buf[*pos])
1.71 schwarze 561: return ARGS_WORD;
1.1 kristaps 562:
1.12 schwarze 563: while (' ' == buf[*pos])
564: (*pos)++;
1.1 kristaps 565:
1.38 schwarze 566: if ('\0' == buf[*pos])
1.73 schwarze 567: mandoc_msg(MANDOCERR_SPACE_EOL, line, *pos, NULL);
1.1 kristaps 568:
1.71 schwarze 569: return ARGS_WORD;
1.1 kristaps 570: }
571:
1.38 schwarze 572: p = &buf[*pos];
1.75 schwarze 573: *v = roff_getarg(mdoc->roff, &p, line, pos);
574: if (v == &v_local)
575: free(*v);
1.1 kristaps 576:
1.63 schwarze 577: /*
578: * After parsing the last word in this phrase,
579: * tell lookup() whether or not to interpret it.
580: */
581:
582: if (*p == '\0' && mdoc->flags & MDOC_PHRASEQL) {
583: mdoc->flags &= ~MDOC_PHRASEQL;
584: mdoc->flags |= MDOC_PHRASEQF;
585: }
1.75 schwarze 586: return ARGS_ALLOC;
1.1 kristaps 587: }
588:
1.49 schwarze 589: /*
1.36 schwarze 590: * Check if the string consists only of space-separated closing
591: * delimiters. This is a bit of a dance: the first must be a close
592: * delimiter, but it may be followed by middle delimiters. Arbitrary
593: * whitespace may separate these tokens.
594: */
595: static int
1.38 schwarze 596: args_checkpunct(const char *buf, int i)
1.36 schwarze 597: {
1.38 schwarze 598: int j;
599: char dbuf[DELIMSZ];
1.36 schwarze 600: enum mdelim d;
601:
602: /* First token must be a close-delimiter. */
603:
1.38 schwarze 604: for (j = 0; buf[i] && ' ' != buf[i] && j < DELIMSZ; j++, i++)
605: dbuf[j] = buf[i];
1.1 kristaps 606:
1.36 schwarze 607: if (DELIMSZ == j)
1.61 schwarze 608: return 0;
1.36 schwarze 609:
1.38 schwarze 610: dbuf[j] = '\0';
611: if (DELIM_CLOSE != mdoc_isdelim(dbuf))
1.61 schwarze 612: return 0;
1.36 schwarze 613:
1.38 schwarze 614: while (' ' == buf[i])
1.36 schwarze 615: i++;
616:
617: /* Remaining must NOT be open/none. */
1.49 schwarze 618:
1.38 schwarze 619: while (buf[i]) {
1.36 schwarze 620: j = 0;
1.38 schwarze 621: while (buf[i] && ' ' != buf[i] && j < DELIMSZ)
622: dbuf[j++] = buf[i++];
1.36 schwarze 623:
624: if (DELIMSZ == j)
1.61 schwarze 625: return 0;
1.36 schwarze 626:
1.38 schwarze 627: dbuf[j] = '\0';
628: d = mdoc_isdelim(dbuf);
1.36 schwarze 629: if (DELIM_NONE == d || DELIM_OPEN == d)
1.61 schwarze 630: return 0;
1.36 schwarze 631:
1.38 schwarze 632: while (' ' == buf[i])
1.36 schwarze 633: i++;
634: }
635:
1.61 schwarze 636: return '\0' == buf[i];
1.36 schwarze 637: }
638:
1.53 schwarze 639: static void
1.59 schwarze 640: argv_multi(struct roff_man *mdoc, int line,
1.1 kristaps 641: struct mdoc_argv *v, int *pos, char *buf)
642: {
1.24 schwarze 643: enum margserr ac;
1.1 kristaps 644: char *p;
645:
646: for (v->sz = 0; ; v->sz++) {
1.53 schwarze 647: if (buf[*pos] == '-')
1.1 kristaps 648: break;
1.42 schwarze 649: ac = args(mdoc, line, pos, buf, ARGSFL_NONE, &p);
1.53 schwarze 650: if (ac == ARGS_EOLN)
1.1 kristaps 651: break;
652:
1.53 schwarze 653: if (v->sz % MULTI_STEP == 0)
1.50 schwarze 654: v->value = mandoc_reallocarray(v->value,
655: v->sz + MULTI_STEP, sizeof(char *));
1.19 schwarze 656:
1.75 schwarze 657: if (ac != ARGS_ALLOC)
658: p = mandoc_strdup(p);
659: v->value[(int)v->sz] = p;
1.1 kristaps 660: }
661: }
662:
1.53 schwarze 663: static void
1.59 schwarze 664: argv_single(struct roff_man *mdoc, int line,
1.1 kristaps 665: struct mdoc_argv *v, int *pos, char *buf)
666: {
1.24 schwarze 667: enum margserr ac;
1.1 kristaps 668: char *p;
669:
1.42 schwarze 670: ac = args(mdoc, line, pos, buf, ARGSFL_NONE, &p);
1.53 schwarze 671: if (ac == ARGS_EOLN)
672: return;
1.1 kristaps 673:
1.75 schwarze 674: if (ac != ARGS_ALLOC)
675: p = mandoc_strdup(p);
676:
1.1 kristaps 677: v->sz = 1;
1.19 schwarze 678: v->value = mandoc_malloc(sizeof(char *));
1.75 schwarze 679: v->value[0] = p;
1.1 kristaps 680: }
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