Annotation of src/usr.bin/mandoc/roff.c, Revision 1.148
1.148 ! schwarze 1: /* $OpenBSD: roff.c,v 1.147 2015/08/29 23:55:53 schwarze Exp $ */
1.1 schwarze 2: /*
1.139 schwarze 3: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.119 schwarze 4: * Copyright (c) 2010-2015 Ingo Schwarze <schwarze@openbsd.org>
1.1 schwarze 5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
1.16 schwarze 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.1 schwarze 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.16 schwarze 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.1 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.
17: */
1.99 schwarze 18: #include <sys/types.h>
19:
1.1 schwarze 20: #include <assert.h>
1.3 schwarze 21: #include <ctype.h>
1.117 schwarze 22: #include <limits.h>
1.51 schwarze 23: #include <stdio.h>
1.1 schwarze 24: #include <stdlib.h>
25: #include <string.h>
26:
27: #include "mandoc.h"
1.74 schwarze 28: #include "mandoc_aux.h"
1.137 schwarze 29: #include "roff.h"
1.98 daniel 30: #include "libmandoc.h"
1.138 schwarze 31: #include "roff_int.h"
1.27 schwarze 32: #include "libroff.h"
1.1 schwarze 33:
1.37 schwarze 34: /* Maximum number of nested if-else conditionals. */
1.2 schwarze 35: #define RSTACK_MAX 128
36:
1.43 schwarze 37: /* Maximum number of string expansions per line, to break infinite loops. */
38: #define EXPAND_LIMIT 1000
39:
1.138 schwarze 40: /* --- data types --------------------------------------------------------- */
41:
1.1 schwarze 42: enum rofft {
1.123 schwarze 43: ROFF_ab,
1.20 schwarze 44: ROFF_ad,
1.123 schwarze 45: ROFF_af,
46: ROFF_aln,
47: ROFF_als,
1.2 schwarze 48: ROFF_am,
1.123 schwarze 49: ROFF_am1,
1.2 schwarze 50: ROFF_ami,
1.123 schwarze 51: ROFF_ami1,
1.66 schwarze 52: ROFF_as,
1.123 schwarze 53: ROFF_as1,
54: ROFF_asciify,
55: ROFF_backtrace,
56: ROFF_bd,
57: ROFF_bleedat,
58: ROFF_blm,
59: ROFF_box,
60: ROFF_boxa,
61: ROFF_bp,
62: ROFF_BP,
63: /* MAN_br, MDOC_br */
64: ROFF_break,
65: ROFF_breakchar,
66: ROFF_brnl,
67: ROFF_brp,
68: ROFF_brpnl,
69: ROFF_c2,
1.48 schwarze 70: ROFF_cc,
1.67 schwarze 71: ROFF_ce,
1.123 schwarze 72: ROFF_cf,
73: ROFF_cflags,
74: ROFF_ch,
75: ROFF_char,
76: ROFF_chop,
77: ROFF_class,
78: ROFF_close,
79: ROFF_CL,
80: ROFF_color,
81: ROFF_composite,
82: ROFF_continue,
83: ROFF_cp,
84: ROFF_cropat,
85: ROFF_cs,
86: ROFF_cu,
87: ROFF_da,
88: ROFF_dch,
89: ROFF_Dd,
1.1 schwarze 90: ROFF_de,
1.123 schwarze 91: ROFF_de1,
92: ROFF_defcolor,
1.1 schwarze 93: ROFF_dei,
1.123 schwarze 94: ROFF_dei1,
95: ROFF_device,
96: ROFF_devicem,
97: ROFF_di,
98: ROFF_do,
1.2 schwarze 99: ROFF_ds,
1.123 schwarze 100: ROFF_ds1,
101: ROFF_dwh,
102: ROFF_dt,
103: ROFF_ec,
104: ROFF_ecr,
105: ROFF_ecs,
1.2 schwarze 106: ROFF_el,
1.123 schwarze 107: ROFF_em,
108: ROFF_EN,
109: ROFF_eo,
110: ROFF_EP,
111: ROFF_EQ,
112: ROFF_errprint,
113: ROFF_ev,
114: ROFF_evc,
115: ROFF_ex,
116: ROFF_fallback,
1.58 schwarze 117: ROFF_fam,
1.123 schwarze 118: ROFF_fc,
119: ROFF_fchar,
120: ROFF_fcolor,
121: ROFF_fdeferlig,
122: ROFF_feature,
123: /* MAN_fi; ignored in mdoc(7) */
124: ROFF_fkern,
125: ROFF_fl,
126: ROFF_flig,
127: ROFF_fp,
128: ROFF_fps,
129: ROFF_fschar,
130: ROFF_fspacewidth,
131: ROFF_fspecial,
132: /* MAN_ft; ignored in mdoc(7) */
133: ROFF_ftr,
134: ROFF_fzoom,
135: ROFF_gcolor,
136: ROFF_hc,
137: ROFF_hcode,
138: ROFF_hidechar,
139: ROFF_hla,
140: ROFF_hlm,
141: ROFF_hpf,
142: ROFF_hpfa,
143: ROFF_hpfcode,
1.59 schwarze 144: ROFF_hw,
1.20 schwarze 145: ROFF_hy,
1.123 schwarze 146: ROFF_hylang,
147: ROFF_hylen,
148: ROFF_hym,
149: ROFF_hypp,
150: ROFF_hys,
1.2 schwarze 151: ROFF_ie,
152: ROFF_if,
1.1 schwarze 153: ROFF_ig,
1.123 schwarze 154: /* MAN_in; ignored in mdoc(7) */
155: ROFF_index,
1.30 schwarze 156: ROFF_it,
1.123 schwarze 157: ROFF_itc,
158: ROFF_IX,
159: ROFF_kern,
160: ROFF_kernafter,
161: ROFF_kernbefore,
162: ROFF_kernpair,
163: ROFF_lc,
164: ROFF_lc_ctype,
165: ROFF_lds,
166: ROFF_length,
167: ROFF_letadj,
168: ROFF_lf,
169: ROFF_lg,
170: ROFF_lhang,
171: ROFF_linetabs,
172: /* MAN_ll, MDOC_ll */
173: ROFF_lnr,
174: ROFF_lnrf,
175: ROFF_lpfx,
176: ROFF_ls,
177: ROFF_lsm,
178: ROFF_lt,
179: ROFF_mc,
180: ROFF_mediasize,
181: ROFF_minss,
182: ROFF_mk,
183: ROFF_mso,
1.128 schwarze 184: ROFF_na,
1.20 schwarze 185: ROFF_ne,
1.123 schwarze 186: /* MAN_nf; ignored in mdoc(7) */
1.20 schwarze 187: ROFF_nh,
1.123 schwarze 188: ROFF_nhychar,
189: ROFF_nm,
190: ROFF_nn,
191: ROFF_nop,
1.14 schwarze 192: ROFF_nr,
1.123 schwarze 193: ROFF_nrf,
194: ROFF_nroff,
1.31 schwarze 195: ROFF_ns,
1.123 schwarze 196: ROFF_nx,
197: ROFF_open,
198: ROFF_opena,
199: ROFF_os,
200: ROFF_output,
201: ROFF_padj,
202: ROFF_papersize,
203: ROFF_pc,
204: ROFF_pev,
205: ROFF_pi,
206: ROFF_PI,
1.101 schwarze 207: ROFF_pl,
1.123 schwarze 208: ROFF_pm,
209: ROFF_pn,
210: ROFF_pnr,
211: ROFF_po,
1.31 schwarze 212: ROFF_ps,
1.123 schwarze 213: ROFF_psbb,
214: ROFF_pshape,
215: ROFF_pso,
216: ROFF_ptr,
217: ROFF_pvs,
218: ROFF_rchar,
219: ROFF_rd,
220: ROFF_recursionlimit,
221: ROFF_return,
222: ROFF_rfschar,
223: ROFF_rhang,
224: ROFF_rj,
1.2 schwarze 225: ROFF_rm,
1.123 schwarze 226: ROFF_rn,
227: ROFF_rnn,
1.76 schwarze 228: ROFF_rr,
1.123 schwarze 229: ROFF_rs,
230: ROFF_rt,
231: ROFF_schar,
232: ROFF_sentchar,
233: ROFF_shc,
234: ROFF_shift,
235: ROFF_sizes,
1.14 schwarze 236: ROFF_so,
1.123 schwarze 237: /* MAN_sp, MDOC_sp */
238: ROFF_spacewidth,
239: ROFF_special,
240: ROFF_spreadwarn,
241: ROFF_ss,
242: ROFF_sty,
243: ROFF_substring,
244: ROFF_sv,
245: ROFF_sy,
246: ROFF_T_,
1.31 schwarze 247: ROFF_ta,
1.123 schwarze 248: ROFF_tc,
249: ROFF_TE,
250: ROFF_TH,
251: ROFF_ti,
252: ROFF_tkf,
253: ROFF_tl,
254: ROFF_tm,
255: ROFF_tm1,
256: ROFF_tmc,
1.2 schwarze 257: ROFF_tr,
1.123 schwarze 258: ROFF_track,
259: ROFF_transchar,
260: ROFF_trf,
261: ROFF_trimat,
262: ROFF_trin,
263: ROFF_trnt,
264: ROFF_troff,
1.27 schwarze 265: ROFF_TS,
1.123 schwarze 266: ROFF_uf,
267: ROFF_ul,
268: ROFF_unformat,
269: ROFF_unwatch,
270: ROFF_unwatchn,
271: ROFF_vpt,
272: ROFF_vs,
273: ROFF_warn,
274: ROFF_warnscale,
275: ROFF_watch,
276: ROFF_watchlength,
277: ROFF_watchn,
278: ROFF_wh,
279: ROFF_while,
280: ROFF_write,
281: ROFF_writec,
282: ROFF_writem,
283: ROFF_xflag,
1.2 schwarze 284: ROFF_cblock,
1.16 schwarze 285: ROFF_USERDEF,
1.1 schwarze 286: ROFF_MAX
287: };
288:
1.41 schwarze 289: /*
1.42 schwarze 290: * An incredibly-simple string buffer.
291: */
1.8 schwarze 292: struct roffstr {
1.42 schwarze 293: char *p; /* nil-terminated buffer */
294: size_t sz; /* saved strlen(p) */
295: };
296:
297: /*
298: * A key-value roffstr pair as part of a singly-linked list.
299: */
300: struct roffkv {
301: struct roffstr key;
302: struct roffstr val;
303: struct roffkv *next; /* next in list */
1.8 schwarze 304: };
305:
1.52 schwarze 306: /*
307: * A single number register as part of a singly-linked list.
308: */
309: struct roffreg {
310: struct roffstr key;
1.53 schwarze 311: int val;
1.52 schwarze 312: struct roffreg *next;
313: };
314:
1.1 schwarze 315: struct roff {
1.35 schwarze 316: struct mparse *parse; /* parse point */
1.109 schwarze 317: const struct mchars *mchars; /* character table */
1.1 schwarze 318: struct roffnode *last; /* leaf of stack */
1.96 schwarze 319: int *rstack; /* stack of inverted `ie' values */
1.52 schwarze 320: struct roffreg *regtab; /* number registers */
1.42 schwarze 321: struct roffkv *strtab; /* user-defined strings & macros */
322: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
323: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.16 schwarze 324: const char *current_string; /* value of last called user macro */
1.27 schwarze 325: struct tbl_node *first_tbl; /* first table parsed */
326: struct tbl_node *last_tbl; /* last table parsed */
327: struct tbl_node *tbl; /* current table being parsed */
1.32 schwarze 328: struct eqn_node *last_eqn; /* last equation parsed */
329: struct eqn_node *first_eqn; /* first equation parsed */
330: struct eqn_node *eqn; /* current equation being parsed */
1.102 schwarze 331: int eqn_inline; /* current equation is inline */
1.96 schwarze 332: int options; /* parse options */
333: int rstacksz; /* current size limit of rstack */
334: int rstackpos; /* position in rstack */
1.99 schwarze 335: int format; /* current file in mdoc or man format */
1.145 schwarze 336: int argc; /* number of args of the last macro */
1.96 schwarze 337: char control; /* control character */
1.1 schwarze 338: };
339:
340: struct roffnode {
341: enum rofft tok; /* type of node */
342: struct roffnode *parent; /* up one in stack */
343: int line; /* parse line */
344: int col; /* parse col */
1.16 schwarze 345: char *name; /* node name, e.g. macro name */
1.2 schwarze 346: char *end; /* end-rules: custom token */
347: int endspan; /* end-rules: next-line or infty */
1.71 schwarze 348: int rule; /* current evaluation rule */
1.1 schwarze 349: };
350:
351: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
352: enum rofft tok, /* tok of macro */ \
1.110 schwarze 353: struct buf *buf, /* input buffer */ \
1.1 schwarze 354: int ln, /* parse line */ \
1.2 schwarze 355: int ppos, /* original pos in buffer */ \
356: int pos, /* current pos in buffer */ \
357: int *offs /* reset offset of buffer data */
1.1 schwarze 358:
359: typedef enum rofferr (*roffproc)(ROFF_ARGS);
360:
361: struct roffmac {
362: const char *name; /* macro name */
1.2 schwarze 363: roffproc proc; /* process new macro */
364: roffproc text; /* process as child text of macro */
365: roffproc sub; /* process as child of macro */
366: int flags;
367: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.3 schwarze 368: struct roffmac *next;
1.1 schwarze 369: };
370:
1.37 schwarze 371: struct predef {
372: const char *name; /* predefined input name */
373: const char *str; /* replacement symbol */
374: };
375:
376: #define PREDEF(__name, __str) \
377: { (__name), (__str) },
378:
1.138 schwarze 379: /* --- function prototypes ------------------------------------------------ */
380:
1.42 schwarze 381: static enum rofft roffhash_find(const char *, size_t);
382: static void roffhash_init(void);
383: static void roffnode_cleanscope(struct roff *);
384: static void roffnode_pop(struct roff *);
385: static void roffnode_push(struct roff *, enum rofft,
386: const char *, int, int);
1.2 schwarze 387: static enum rofferr roff_block(ROFF_ARGS);
388: static enum rofferr roff_block_text(ROFF_ARGS);
389: static enum rofferr roff_block_sub(ROFF_ARGS);
1.123 schwarze 390: static enum rofferr roff_brp(ROFF_ARGS);
1.2 schwarze 391: static enum rofferr roff_cblock(ROFF_ARGS);
1.48 schwarze 392: static enum rofferr roff_cc(ROFF_ARGS);
1.68 schwarze 393: static void roff_ccond(struct roff *, int, int);
1.2 schwarze 394: static enum rofferr roff_cond(ROFF_ARGS);
395: static enum rofferr roff_cond_text(ROFF_ARGS);
396: static enum rofferr roff_cond_sub(ROFF_ARGS);
1.7 schwarze 397: static enum rofferr roff_ds(ROFF_ARGS);
1.110 schwarze 398: static enum rofferr roff_eqndelim(struct roff *, struct buf *, int);
1.143 schwarze 399: static int roff_evalcond(struct roff *r, int, char *, int *);
1.106 schwarze 400: static int roff_evalnum(struct roff *, int,
401: const char *, int *, int *, int);
402: static int roff_evalpar(struct roff *, int,
1.133 schwarze 403: const char *, int *, int *, int);
1.71 schwarze 404: static int roff_evalstrcond(const char *, int *);
1.42 schwarze 405: static void roff_free1(struct roff *);
1.52 schwarze 406: static void roff_freereg(struct roffreg *);
1.42 schwarze 407: static void roff_freestr(struct roffkv *);
1.85 schwarze 408: static size_t roff_getname(struct roff *, char **, int, int);
1.133 schwarze 409: static int roff_getnum(const char *, int *, int *, int);
1.56 schwarze 410: static int roff_getop(const char *, int *, char *);
1.53 schwarze 411: static int roff_getregn(const struct roff *,
412: const char *, size_t);
1.145 schwarze 413: static int roff_getregro(const struct roff *,
414: const char *name);
1.80 schwarze 415: static const char *roff_getstrn(const struct roff *,
1.8 schwarze 416: const char *, size_t);
1.143 schwarze 417: static int roff_hasregn(const struct roff *,
418: const char *, size_t);
1.123 schwarze 419: static enum rofferr roff_insec(ROFF_ARGS);
1.51 schwarze 420: static enum rofferr roff_it(ROFF_ARGS);
1.21 schwarze 421: static enum rofferr roff_line_ignore(ROFF_ARGS);
1.137 schwarze 422: static void roff_man_alloc1(struct roff_man *);
423: static void roff_man_free1(struct roff_man *);
1.6 schwarze 424: static enum rofferr roff_nr(ROFF_ARGS);
1.87 schwarze 425: static enum rofft roff_parse(struct roff *, char *, int *,
426: int, int);
1.110 schwarze 427: static enum rofferr roff_parsetext(struct buf *, int, int *);
428: static enum rofferr roff_res(struct roff *, struct buf *, int, int);
1.29 schwarze 429: static enum rofferr roff_rm(ROFF_ARGS);
1.76 schwarze 430: static enum rofferr roff_rr(ROFF_ARGS);
1.8 schwarze 431: static void roff_setstr(struct roff *,
1.16 schwarze 432: const char *, const char *, int);
1.80 schwarze 433: static void roff_setstrn(struct roffkv **, const char *,
1.42 schwarze 434: size_t, const char *, size_t, int);
1.14 schwarze 435: static enum rofferr roff_so(ROFF_ARGS);
1.42 schwarze 436: static enum rofferr roff_tr(ROFF_ARGS);
1.47 schwarze 437: static enum rofferr roff_Dd(ROFF_ARGS);
438: static enum rofferr roff_TH(ROFF_ARGS);
1.27 schwarze 439: static enum rofferr roff_TE(ROFF_ARGS);
440: static enum rofferr roff_TS(ROFF_ARGS);
1.32 schwarze 441: static enum rofferr roff_EQ(ROFF_ARGS);
442: static enum rofferr roff_EN(ROFF_ARGS);
1.27 schwarze 443: static enum rofferr roff_T_(ROFF_ARGS);
1.123 schwarze 444: static enum rofferr roff_unsupp(ROFF_ARGS);
1.16 schwarze 445: static enum rofferr roff_userdef(ROFF_ARGS);
1.1 schwarze 446:
1.138 schwarze 447: /* --- constant data ------------------------------------------------------ */
448:
1.42 schwarze 449: /* See roffhash_find() */
1.3 schwarze 450:
451: #define ASCII_HI 126
452: #define ASCII_LO 33
453: #define HASHWIDTH (ASCII_HI - ASCII_LO + 1)
454:
1.133 schwarze 455: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
456: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
457:
1.3 schwarze 458: static struct roffmac *hash[HASHWIDTH];
459:
460: static struct roffmac roffs[ROFF_MAX] = {
1.123 schwarze 461: { "ab", roff_unsupp, NULL, NULL, 0, NULL },
1.21 schwarze 462: { "ad", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 463: { "af", roff_line_ignore, NULL, NULL, 0, NULL },
464: { "aln", roff_unsupp, NULL, NULL, 0, NULL },
465: { "als", roff_unsupp, NULL, NULL, 0, NULL },
1.3 schwarze 466: { "am", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.123 schwarze 467: { "am1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.3 schwarze 468: { "ami", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.123 schwarze 469: { "ami1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.66 schwarze 470: { "as", roff_ds, NULL, NULL, 0, NULL },
1.123 schwarze 471: { "as1", roff_ds, NULL, NULL, 0, NULL },
472: { "asciify", roff_unsupp, NULL, NULL, 0, NULL },
473: { "backtrace", roff_line_ignore, NULL, NULL, 0, NULL },
474: { "bd", roff_line_ignore, NULL, NULL, 0, NULL },
475: { "bleedat", roff_line_ignore, NULL, NULL, 0, NULL },
476: { "blm", roff_unsupp, NULL, NULL, 0, NULL },
477: { "box", roff_unsupp, NULL, NULL, 0, NULL },
478: { "boxa", roff_unsupp, NULL, NULL, 0, NULL },
479: { "bp", roff_line_ignore, NULL, NULL, 0, NULL },
480: { "BP", roff_unsupp, NULL, NULL, 0, NULL },
481: { "break", roff_unsupp, NULL, NULL, 0, NULL },
482: { "breakchar", roff_line_ignore, NULL, NULL, 0, NULL },
483: { "brnl", roff_line_ignore, NULL, NULL, 0, NULL },
484: { "brp", roff_brp, NULL, NULL, 0, NULL },
485: { "brpnl", roff_line_ignore, NULL, NULL, 0, NULL },
486: { "c2", roff_unsupp, NULL, NULL, 0, NULL },
1.48 schwarze 487: { "cc", roff_cc, NULL, NULL, 0, NULL },
1.67 schwarze 488: { "ce", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 489: { "cf", roff_insec, NULL, NULL, 0, NULL },
490: { "cflags", roff_line_ignore, NULL, NULL, 0, NULL },
491: { "ch", roff_line_ignore, NULL, NULL, 0, NULL },
492: { "char", roff_unsupp, NULL, NULL, 0, NULL },
493: { "chop", roff_unsupp, NULL, NULL, 0, NULL },
494: { "class", roff_line_ignore, NULL, NULL, 0, NULL },
495: { "close", roff_insec, NULL, NULL, 0, NULL },
496: { "CL", roff_unsupp, NULL, NULL, 0, NULL },
497: { "color", roff_line_ignore, NULL, NULL, 0, NULL },
498: { "composite", roff_unsupp, NULL, NULL, 0, NULL },
499: { "continue", roff_unsupp, NULL, NULL, 0, NULL },
500: { "cp", roff_line_ignore, NULL, NULL, 0, NULL },
501: { "cropat", roff_line_ignore, NULL, NULL, 0, NULL },
502: { "cs", roff_line_ignore, NULL, NULL, 0, NULL },
503: { "cu", roff_line_ignore, NULL, NULL, 0, NULL },
504: { "da", roff_unsupp, NULL, NULL, 0, NULL },
505: { "dch", roff_unsupp, NULL, NULL, 0, NULL },
506: { "Dd", roff_Dd, NULL, NULL, 0, NULL },
1.3 schwarze 507: { "de", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.123 schwarze 508: { "de1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
509: { "defcolor", roff_line_ignore, NULL, NULL, 0, NULL },
1.3 schwarze 510: { "dei", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.123 schwarze 511: { "dei1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
512: { "device", roff_unsupp, NULL, NULL, 0, NULL },
513: { "devicem", roff_unsupp, NULL, NULL, 0, NULL },
514: { "di", roff_unsupp, NULL, NULL, 0, NULL },
515: { "do", roff_unsupp, NULL, NULL, 0, NULL },
1.7 schwarze 516: { "ds", roff_ds, NULL, NULL, 0, NULL },
1.123 schwarze 517: { "ds1", roff_ds, NULL, NULL, 0, NULL },
518: { "dwh", roff_unsupp, NULL, NULL, 0, NULL },
519: { "dt", roff_unsupp, NULL, NULL, 0, NULL },
520: { "ec", roff_unsupp, NULL, NULL, 0, NULL },
521: { "ecr", roff_unsupp, NULL, NULL, 0, NULL },
522: { "ecs", roff_unsupp, NULL, NULL, 0, NULL },
1.3 schwarze 523: { "el", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
1.123 schwarze 524: { "em", roff_unsupp, NULL, NULL, 0, NULL },
525: { "EN", roff_EN, NULL, NULL, 0, NULL },
526: { "eo", roff_unsupp, NULL, NULL, 0, NULL },
527: { "EP", roff_unsupp, NULL, NULL, 0, NULL },
528: { "EQ", roff_EQ, NULL, NULL, 0, NULL },
529: { "errprint", roff_line_ignore, NULL, NULL, 0, NULL },
530: { "ev", roff_unsupp, NULL, NULL, 0, NULL },
531: { "evc", roff_unsupp, NULL, NULL, 0, NULL },
532: { "ex", roff_unsupp, NULL, NULL, 0, NULL },
533: { "fallback", roff_line_ignore, NULL, NULL, 0, NULL },
1.58 schwarze 534: { "fam", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 535: { "fc", roff_unsupp, NULL, NULL, 0, NULL },
536: { "fchar", roff_unsupp, NULL, NULL, 0, NULL },
537: { "fcolor", roff_line_ignore, NULL, NULL, 0, NULL },
538: { "fdeferlig", roff_line_ignore, NULL, NULL, 0, NULL },
539: { "feature", roff_line_ignore, NULL, NULL, 0, NULL },
540: { "fkern", roff_line_ignore, NULL, NULL, 0, NULL },
541: { "fl", roff_line_ignore, NULL, NULL, 0, NULL },
542: { "flig", roff_line_ignore, NULL, NULL, 0, NULL },
543: { "fp", roff_line_ignore, NULL, NULL, 0, NULL },
544: { "fps", roff_line_ignore, NULL, NULL, 0, NULL },
545: { "fschar", roff_unsupp, NULL, NULL, 0, NULL },
546: { "fspacewidth", roff_line_ignore, NULL, NULL, 0, NULL },
547: { "fspecial", roff_line_ignore, NULL, NULL, 0, NULL },
548: { "ftr", roff_line_ignore, NULL, NULL, 0, NULL },
549: { "fzoom", roff_line_ignore, NULL, NULL, 0, NULL },
550: { "gcolor", roff_line_ignore, NULL, NULL, 0, NULL },
551: { "hc", roff_line_ignore, NULL, NULL, 0, NULL },
552: { "hcode", roff_line_ignore, NULL, NULL, 0, NULL },
553: { "hidechar", roff_line_ignore, NULL, NULL, 0, NULL },
554: { "hla", roff_line_ignore, NULL, NULL, 0, NULL },
555: { "hlm", roff_line_ignore, NULL, NULL, 0, NULL },
556: { "hpf", roff_line_ignore, NULL, NULL, 0, NULL },
557: { "hpfa", roff_line_ignore, NULL, NULL, 0, NULL },
558: { "hpfcode", roff_line_ignore, NULL, NULL, 0, NULL },
1.59 schwarze 559: { "hw", roff_line_ignore, NULL, NULL, 0, NULL },
1.21 schwarze 560: { "hy", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 561: { "hylang", roff_line_ignore, NULL, NULL, 0, NULL },
562: { "hylen", roff_line_ignore, NULL, NULL, 0, NULL },
563: { "hym", roff_line_ignore, NULL, NULL, 0, NULL },
564: { "hypp", roff_line_ignore, NULL, NULL, 0, NULL },
565: { "hys", roff_line_ignore, NULL, NULL, 0, NULL },
1.3 schwarze 566: { "ie", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
567: { "if", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
568: { "ig", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.123 schwarze 569: { "index", roff_unsupp, NULL, NULL, 0, NULL },
1.51 schwarze 570: { "it", roff_it, NULL, NULL, 0, NULL },
1.123 schwarze 571: { "itc", roff_unsupp, NULL, NULL, 0, NULL },
572: { "IX", roff_line_ignore, NULL, NULL, 0, NULL },
573: { "kern", roff_line_ignore, NULL, NULL, 0, NULL },
574: { "kernafter", roff_line_ignore, NULL, NULL, 0, NULL },
575: { "kernbefore", roff_line_ignore, NULL, NULL, 0, NULL },
576: { "kernpair", roff_line_ignore, NULL, NULL, 0, NULL },
577: { "lc", roff_unsupp, NULL, NULL, 0, NULL },
578: { "lc_ctype", roff_unsupp, NULL, NULL, 0, NULL },
579: { "lds", roff_unsupp, NULL, NULL, 0, NULL },
580: { "length", roff_unsupp, NULL, NULL, 0, NULL },
581: { "letadj", roff_line_ignore, NULL, NULL, 0, NULL },
582: { "lf", roff_insec, NULL, NULL, 0, NULL },
583: { "lg", roff_line_ignore, NULL, NULL, 0, NULL },
584: { "lhang", roff_line_ignore, NULL, NULL, 0, NULL },
585: { "linetabs", roff_unsupp, NULL, NULL, 0, NULL },
586: { "lnr", roff_unsupp, NULL, NULL, 0, NULL },
587: { "lnrf", roff_unsupp, NULL, NULL, 0, NULL },
588: { "lpfx", roff_unsupp, NULL, NULL, 0, NULL },
589: { "ls", roff_line_ignore, NULL, NULL, 0, NULL },
590: { "lsm", roff_unsupp, NULL, NULL, 0, NULL },
591: { "lt", roff_line_ignore, NULL, NULL, 0, NULL },
592: { "mc", roff_line_ignore, NULL, NULL, 0, NULL },
593: { "mediasize", roff_line_ignore, NULL, NULL, 0, NULL },
594: { "minss", roff_line_ignore, NULL, NULL, 0, NULL },
595: { "mk", roff_line_ignore, NULL, NULL, 0, NULL },
596: { "mso", roff_insec, NULL, NULL, 0, NULL },
1.128 schwarze 597: { "na", roff_line_ignore, NULL, NULL, 0, NULL },
1.21 schwarze 598: { "ne", roff_line_ignore, NULL, NULL, 0, NULL },
599: { "nh", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 600: { "nhychar", roff_line_ignore, NULL, NULL, 0, NULL },
601: { "nm", roff_unsupp, NULL, NULL, 0, NULL },
602: { "nn", roff_unsupp, NULL, NULL, 0, NULL },
603: { "nop", roff_unsupp, NULL, NULL, 0, NULL },
1.14 schwarze 604: { "nr", roff_nr, NULL, NULL, 0, NULL },
1.123 schwarze 605: { "nrf", roff_unsupp, NULL, NULL, 0, NULL },
606: { "nroff", roff_line_ignore, NULL, NULL, 0, NULL },
1.31 schwarze 607: { "ns", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 608: { "nx", roff_insec, NULL, NULL, 0, NULL },
609: { "open", roff_insec, NULL, NULL, 0, NULL },
610: { "opena", roff_insec, NULL, NULL, 0, NULL },
611: { "os", roff_line_ignore, NULL, NULL, 0, NULL },
612: { "output", roff_unsupp, NULL, NULL, 0, NULL },
613: { "padj", roff_line_ignore, NULL, NULL, 0, NULL },
614: { "papersize", roff_line_ignore, NULL, NULL, 0, NULL },
615: { "pc", roff_line_ignore, NULL, NULL, 0, NULL },
616: { "pev", roff_line_ignore, NULL, NULL, 0, NULL },
617: { "pi", roff_insec, NULL, NULL, 0, NULL },
618: { "PI", roff_unsupp, NULL, NULL, 0, NULL },
1.101 schwarze 619: { "pl", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 620: { "pm", roff_line_ignore, NULL, NULL, 0, NULL },
621: { "pn", roff_line_ignore, NULL, NULL, 0, NULL },
622: { "pnr", roff_line_ignore, NULL, NULL, 0, NULL },
623: { "po", roff_line_ignore, NULL, NULL, 0, NULL },
1.31 schwarze 624: { "ps", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 625: { "psbb", roff_unsupp, NULL, NULL, 0, NULL },
1.127 schwarze 626: { "pshape", roff_unsupp, NULL, NULL, 0, NULL },
1.123 schwarze 627: { "pso", roff_insec, NULL, NULL, 0, NULL },
628: { "ptr", roff_line_ignore, NULL, NULL, 0, NULL },
629: { "pvs", roff_line_ignore, NULL, NULL, 0, NULL },
630: { "rchar", roff_unsupp, NULL, NULL, 0, NULL },
631: { "rd", roff_line_ignore, NULL, NULL, 0, NULL },
632: { "recursionlimit", roff_line_ignore, NULL, NULL, 0, NULL },
633: { "return", roff_unsupp, NULL, NULL, 0, NULL },
634: { "rfschar", roff_unsupp, NULL, NULL, 0, NULL },
635: { "rhang", roff_line_ignore, NULL, NULL, 0, NULL },
636: { "rj", roff_line_ignore, NULL, NULL, 0, NULL },
1.29 schwarze 637: { "rm", roff_rm, NULL, NULL, 0, NULL },
1.123 schwarze 638: { "rn", roff_unsupp, NULL, NULL, 0, NULL },
639: { "rnn", roff_unsupp, NULL, NULL, 0, NULL },
1.76 schwarze 640: { "rr", roff_rr, NULL, NULL, 0, NULL },
1.123 schwarze 641: { "rs", roff_line_ignore, NULL, NULL, 0, NULL },
642: { "rt", roff_line_ignore, NULL, NULL, 0, NULL },
643: { "schar", roff_unsupp, NULL, NULL, 0, NULL },
644: { "sentchar", roff_line_ignore, NULL, NULL, 0, NULL },
645: { "shc", roff_line_ignore, NULL, NULL, 0, NULL },
646: { "shift", roff_unsupp, NULL, NULL, 0, NULL },
647: { "sizes", roff_line_ignore, NULL, NULL, 0, NULL },
1.14 schwarze 648: { "so", roff_so, NULL, NULL, 0, NULL },
1.123 schwarze 649: { "spacewidth", roff_line_ignore, NULL, NULL, 0, NULL },
650: { "special", roff_line_ignore, NULL, NULL, 0, NULL },
651: { "spreadwarn", roff_line_ignore, NULL, NULL, 0, NULL },
652: { "ss", roff_line_ignore, NULL, NULL, 0, NULL },
653: { "sty", roff_line_ignore, NULL, NULL, 0, NULL },
654: { "substring", roff_unsupp, NULL, NULL, 0, NULL },
655: { "sv", roff_line_ignore, NULL, NULL, 0, NULL },
656: { "sy", roff_insec, NULL, NULL, 0, NULL },
657: { "T&", roff_T_, NULL, NULL, 0, NULL },
1.127 schwarze 658: { "ta", roff_unsupp, NULL, NULL, 0, NULL },
1.123 schwarze 659: { "tc", roff_unsupp, NULL, NULL, 0, NULL },
660: { "TE", roff_TE, NULL, NULL, 0, NULL },
661: { "TH", roff_TH, NULL, NULL, 0, NULL },
1.127 schwarze 662: { "ti", roff_unsupp, NULL, NULL, 0, NULL },
1.123 schwarze 663: { "tkf", roff_line_ignore, NULL, NULL, 0, NULL },
664: { "tl", roff_unsupp, NULL, NULL, 0, NULL },
665: { "tm", roff_line_ignore, NULL, NULL, 0, NULL },
666: { "tm1", roff_line_ignore, NULL, NULL, 0, NULL },
667: { "tmc", roff_line_ignore, NULL, NULL, 0, NULL },
1.42 schwarze 668: { "tr", roff_tr, NULL, NULL, 0, NULL },
1.123 schwarze 669: { "track", roff_line_ignore, NULL, NULL, 0, NULL },
670: { "transchar", roff_line_ignore, NULL, NULL, 0, NULL },
671: { "trf", roff_insec, NULL, NULL, 0, NULL },
672: { "trimat", roff_line_ignore, NULL, NULL, 0, NULL },
673: { "trin", roff_unsupp, NULL, NULL, 0, NULL },
674: { "trnt", roff_unsupp, NULL, NULL, 0, NULL },
675: { "troff", roff_line_ignore, NULL, NULL, 0, NULL },
1.27 schwarze 676: { "TS", roff_TS, NULL, NULL, 0, NULL },
1.123 schwarze 677: { "uf", roff_line_ignore, NULL, NULL, 0, NULL },
678: { "ul", roff_line_ignore, NULL, NULL, 0, NULL },
679: { "unformat", roff_unsupp, NULL, NULL, 0, NULL },
680: { "unwatch", roff_line_ignore, NULL, NULL, 0, NULL },
681: { "unwatchn", roff_line_ignore, NULL, NULL, 0, NULL },
682: { "vpt", roff_line_ignore, NULL, NULL, 0, NULL },
683: { "vs", roff_line_ignore, NULL, NULL, 0, NULL },
684: { "warn", roff_line_ignore, NULL, NULL, 0, NULL },
685: { "warnscale", roff_line_ignore, NULL, NULL, 0, NULL },
686: { "watch", roff_line_ignore, NULL, NULL, 0, NULL },
687: { "watchlength", roff_line_ignore, NULL, NULL, 0, NULL },
688: { "watchn", roff_line_ignore, NULL, NULL, 0, NULL },
689: { "wh", roff_unsupp, NULL, NULL, 0, NULL },
690: { "while", roff_unsupp, NULL, NULL, 0, NULL },
691: { "write", roff_insec, NULL, NULL, 0, NULL },
692: { "writec", roff_insec, NULL, NULL, 0, NULL },
693: { "writem", roff_insec, NULL, NULL, 0, NULL },
694: { "xflag", roff_line_ignore, NULL, NULL, 0, NULL },
1.3 schwarze 695: { ".", roff_cblock, NULL, NULL, 0, NULL },
1.16 schwarze 696: { NULL, roff_userdef, NULL, NULL, 0, NULL },
1.1 schwarze 697: };
698:
1.73 schwarze 699: /* not currently implemented: Ds em Eq LP Me PP pp Or Rd Sf SH */
1.47 schwarze 700: const char *const __mdoc_reserved[] = {
701: "Ac", "Ad", "An", "Ao", "Ap", "Aq", "Ar", "At",
702: "Bc", "Bd", "Bf", "Bk", "Bl", "Bo", "Bq",
703: "Brc", "Bro", "Brq", "Bsx", "Bt", "Bx",
704: "Cd", "Cm", "Db", "Dc", "Dd", "Dl", "Do", "Dq",
1.73 schwarze 705: "Dt", "Dv", "Dx", "D1",
706: "Ec", "Ed", "Ef", "Ek", "El", "Em",
707: "En", "Eo", "Er", "Es", "Ev", "Ex",
1.47 schwarze 708: "Fa", "Fc", "Fd", "Fl", "Fn", "Fo", "Fr", "Ft", "Fx",
1.73 schwarze 709: "Hf", "Ic", "In", "It", "Lb", "Li", "Lk", "Lp",
710: "Ms", "Mt", "Nd", "Nm", "No", "Ns", "Nx",
1.47 schwarze 711: "Oc", "Oo", "Op", "Os", "Ot", "Ox",
1.73 schwarze 712: "Pa", "Pc", "Pf", "Po", "Pp", "Pq",
713: "Qc", "Ql", "Qo", "Qq", "Re", "Rs", "Rv",
714: "Sc", "Sh", "Sm", "So", "Sq",
1.47 schwarze 715: "Ss", "St", "Sx", "Sy",
716: "Ta", "Tn", "Ud", "Ux", "Va", "Vt", "Xc", "Xo", "Xr",
1.73 schwarze 717: "%A", "%B", "%C", "%D", "%I", "%J", "%N", "%O",
1.47 schwarze 718: "%P", "%Q", "%R", "%T", "%U", "%V",
719: NULL
720: };
721:
1.73 schwarze 722: /* not currently implemented: BT DE DS ME MT PT SY TQ YS */
1.47 schwarze 723: const char *const __man_reserved[] = {
1.73 schwarze 724: "AT", "B", "BI", "BR", "DT",
725: "EE", "EN", "EQ", "EX", "HP", "I", "IB", "IP", "IR",
726: "LP", "OP", "P", "PD", "PP",
727: "R", "RB", "RE", "RI", "RS", "SB", "SH", "SM", "SS",
728: "TE", "TH", "TP", "TS", "T&", "UC", "UE", "UR",
1.47 schwarze 729: NULL
730: };
731:
1.37 schwarze 732: /* Array of injected predefined strings. */
733: #define PREDEFS_MAX 38
734: static const struct predef predefs[PREDEFS_MAX] = {
735: #include "predefs.in"
736: };
737:
1.42 schwarze 738: /* See roffhash_find() */
1.3 schwarze 739: #define ROFF_HASH(p) (p[0] - ASCII_LO)
740:
1.51 schwarze 741: static int roffit_lines; /* number of lines to delay */
742: static char *roffit_macro; /* nil-terminated macro line */
743:
1.80 schwarze 744:
1.138 schwarze 745: /* --- request table ------------------------------------------------------ */
746:
1.3 schwarze 747: static void
1.42 schwarze 748: roffhash_init(void)
1.3 schwarze 749: {
750: struct roffmac *n;
751: int buc, i;
752:
1.16 schwarze 753: for (i = 0; i < (int)ROFF_USERDEF; i++) {
1.3 schwarze 754: assert(roffs[i].name[0] >= ASCII_LO);
755: assert(roffs[i].name[0] <= ASCII_HI);
756:
757: buc = ROFF_HASH(roffs[i].name);
758:
759: if (NULL != (n = hash[buc])) {
760: for ( ; n->next; n = n->next)
761: /* Do nothing. */ ;
762: n->next = &roffs[i];
763: } else
764: hash[buc] = &roffs[i];
765: }
766: }
767:
1.1 schwarze 768: /*
769: * Look up a roff token by its name. Returns ROFF_MAX if no macro by
770: * the nil-terminated string name could be found.
771: */
772: static enum rofft
1.42 schwarze 773: roffhash_find(const char *p, size_t s)
1.1 schwarze 774: {
1.3 schwarze 775: int buc;
776: struct roffmac *n;
1.1 schwarze 777:
1.3 schwarze 778: /*
779: * libroff has an extremely simple hashtable, for the time
780: * being, which simply keys on the first character, which must
781: * be printable, then walks a chain. It works well enough until
782: * optimised.
783: */
784:
785: if (p[0] < ASCII_LO || p[0] > ASCII_HI)
786: return(ROFF_MAX);
787:
788: buc = ROFF_HASH(p);
789:
790: if (NULL == (n = hash[buc]))
791: return(ROFF_MAX);
792: for ( ; n; n = n->next)
1.16 schwarze 793: if (0 == strncmp(n->name, p, s) && '\0' == n->name[(int)s])
1.3 schwarze 794: return((enum rofft)(n - roffs));
1.1 schwarze 795:
796: return(ROFF_MAX);
797: }
798:
1.138 schwarze 799: /* --- stack of request blocks -------------------------------------------- */
800:
1.1 schwarze 801: /*
802: * Pop the current node off of the stack of roff instructions currently
803: * pending.
804: */
805: static void
806: roffnode_pop(struct roff *r)
807: {
808: struct roffnode *p;
809:
1.2 schwarze 810: assert(r->last);
1.80 schwarze 811: p = r->last;
1.2 schwarze 812:
813: r->last = r->last->parent;
1.16 schwarze 814: free(p->name);
815: free(p->end);
1.1 schwarze 816: free(p);
817: }
818:
819: /*
820: * Push a roff node onto the instruction stack. This must later be
821: * removed with roffnode_pop().
822: */
1.11 schwarze 823: static void
1.16 schwarze 824: roffnode_push(struct roff *r, enum rofft tok, const char *name,
825: int line, int col)
1.1 schwarze 826: {
827: struct roffnode *p;
828:
1.11 schwarze 829: p = mandoc_calloc(1, sizeof(struct roffnode));
1.1 schwarze 830: p->tok = tok;
1.16 schwarze 831: if (name)
832: p->name = mandoc_strdup(name);
1.1 schwarze 833: p->parent = r->last;
834: p->line = line;
835: p->col = col;
1.71 schwarze 836: p->rule = p->parent ? p->parent->rule : 0;
1.1 schwarze 837:
838: r->last = p;
839: }
840:
1.138 schwarze 841: /* --- roff parser state data management ---------------------------------- */
842:
1.1 schwarze 843: static void
844: roff_free1(struct roff *r)
845: {
1.49 schwarze 846: struct tbl_node *tbl;
1.32 schwarze 847: struct eqn_node *e;
1.42 schwarze 848: int i;
1.27 schwarze 849:
1.49 schwarze 850: while (NULL != (tbl = r->first_tbl)) {
851: r->first_tbl = tbl->next;
852: tbl_free(tbl);
1.27 schwarze 853: }
854: r->first_tbl = r->last_tbl = r->tbl = NULL;
1.1 schwarze 855:
1.32 schwarze 856: while (NULL != (e = r->first_eqn)) {
857: r->first_eqn = e->next;
858: eqn_free(e);
859: }
860: r->first_eqn = r->last_eqn = r->eqn = NULL;
861:
1.1 schwarze 862: while (r->last)
863: roffnode_pop(r);
1.27 schwarze 864:
1.96 schwarze 865: free (r->rstack);
866: r->rstack = NULL;
867: r->rstacksz = 0;
868: r->rstackpos = -1;
869:
870: roff_freereg(r->regtab);
871: r->regtab = NULL;
872:
1.42 schwarze 873: roff_freestr(r->strtab);
874: roff_freestr(r->xmbtab);
875: r->strtab = r->xmbtab = NULL;
876:
877: if (r->xtab)
878: for (i = 0; i < 128; i++)
879: free(r->xtab[i].p);
880: free(r->xtab);
881: r->xtab = NULL;
1.1 schwarze 882: }
883:
884: void
885: roff_reset(struct roff *r)
886: {
887:
888: roff_free1(r);
1.99 schwarze 889: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.48 schwarze 890: r->control = 0;
1.1 schwarze 891: }
892:
893: void
894: roff_free(struct roff *r)
895: {
896:
897: roff_free1(r);
898: free(r);
899: }
900:
901: struct roff *
1.109 schwarze 902: roff_alloc(struct mparse *parse, const struct mchars *mchars, int options)
1.1 schwarze 903: {
904: struct roff *r;
905:
1.11 schwarze 906: r = mandoc_calloc(1, sizeof(struct roff));
1.35 schwarze 907: r->parse = parse;
1.109 schwarze 908: r->mchars = mchars;
1.72 schwarze 909: r->options = options;
1.99 schwarze 910: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.2 schwarze 911: r->rstackpos = -1;
1.80 schwarze 912:
1.42 schwarze 913: roffhash_init();
1.37 schwarze 914:
1.1 schwarze 915: return(r);
1.137 schwarze 916: }
917:
1.138 schwarze 918: /* --- syntax tree state data management ---------------------------------- */
919:
1.137 schwarze 920: static void
921: roff_man_free1(struct roff_man *man)
922: {
923:
1.138 schwarze 924: if (man->first != NULL)
925: roff_node_delete(man, man->first);
1.137 schwarze 926: free(man->meta.msec);
927: free(man->meta.vol);
928: free(man->meta.os);
929: free(man->meta.arch);
930: free(man->meta.title);
931: free(man->meta.name);
932: free(man->meta.date);
933: }
934:
935: static void
936: roff_man_alloc1(struct roff_man *man)
937: {
938:
939: memset(&man->meta, 0, sizeof(man->meta));
940: man->first = mandoc_calloc(1, sizeof(*man->first));
941: man->first->type = ROFFT_ROOT;
942: man->last = man->first;
943: man->last_es = NULL;
944: man->flags = 0;
945: man->macroset = MACROSET_NONE;
946: man->lastsec = man->lastnamed = SEC_NONE;
947: man->next = ROFF_NEXT_CHILD;
948: }
949:
950: void
951: roff_man_reset(struct roff_man *man)
952: {
953:
954: roff_man_free1(man);
955: roff_man_alloc1(man);
956: }
957:
958: void
959: roff_man_free(struct roff_man *man)
960: {
961:
962: roff_man_free1(man);
963: free(man);
964: }
965:
966: struct roff_man *
967: roff_man_alloc(struct roff *roff, struct mparse *parse,
968: const char *defos, int quick)
969: {
970: struct roff_man *man;
971:
972: man = mandoc_calloc(1, sizeof(*man));
973: man->parse = parse;
974: man->roff = roff;
975: man->defos = defos;
976: man->quick = quick;
977: roff_man_alloc1(man);
978: return(man);
1.1 schwarze 979: }
980:
1.138 schwarze 981: /* --- syntax tree handling ----------------------------------------------- */
982:
983: struct roff_node *
984: roff_node_alloc(struct roff_man *man, int line, int pos,
985: enum roff_type type, int tok)
986: {
987: struct roff_node *n;
988:
989: n = mandoc_calloc(1, sizeof(*n));
990: n->line = line;
991: n->pos = pos;
992: n->tok = tok;
993: n->type = type;
994: n->sec = man->lastsec;
995:
996: if (man->flags & MDOC_SYNOPSIS)
997: n->flags |= MDOC_SYNPRETTY;
998: else
999: n->flags &= ~MDOC_SYNPRETTY;
1000: if (man->flags & MDOC_NEWLINE)
1001: n->flags |= MDOC_LINE;
1002: man->flags &= ~MDOC_NEWLINE;
1003:
1004: return(n);
1005: }
1006:
1007: void
1008: roff_node_append(struct roff_man *man, struct roff_node *n)
1009: {
1010:
1011: switch (man->next) {
1012: case ROFF_NEXT_SIBLING:
1013: man->last->next = n;
1014: n->prev = man->last;
1015: n->parent = man->last->parent;
1016: break;
1017: case ROFF_NEXT_CHILD:
1018: man->last->child = n;
1019: n->parent = man->last;
1020: break;
1021: default:
1022: abort();
1023: }
1024: n->parent->nchild++;
1.142 schwarze 1025: n->parent->last = n;
1.138 schwarze 1026:
1027: /*
1028: * Copy over the normalised-data pointer of our parent. Not
1029: * everybody has one, but copying a null pointer is fine.
1030: */
1031:
1032: switch (n->type) {
1033: case ROFFT_BODY:
1034: if (n->end != ENDBODY_NOT)
1035: break;
1036: /* FALLTHROUGH */
1037: case ROFFT_TAIL:
1038: /* FALLTHROUGH */
1039: case ROFFT_HEAD:
1040: n->norm = n->parent->norm;
1041: break;
1042: default:
1043: break;
1044: }
1045:
1046: if (man->macroset == MACROSET_MDOC)
1047: mdoc_valid_pre(man, n);
1048:
1049: switch (n->type) {
1050: case ROFFT_HEAD:
1051: assert(n->parent->type == ROFFT_BLOCK);
1052: n->parent->head = n;
1053: break;
1054: case ROFFT_BODY:
1055: if (n->end)
1056: break;
1057: assert(n->parent->type == ROFFT_BLOCK);
1058: n->parent->body = n;
1059: break;
1060: case ROFFT_TAIL:
1061: assert(n->parent->type == ROFFT_BLOCK);
1062: n->parent->tail = n;
1063: break;
1064: default:
1065: break;
1066: }
1067: man->last = n;
1068: }
1069:
1.139 schwarze 1070: void
1071: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
1072: {
1073: struct roff_node *n;
1074:
1075: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
1076: n->string = roff_strdup(man->roff, word);
1077: roff_node_append(man, n);
1078: if (man->macroset == MACROSET_MDOC)
1079: mdoc_valid_post(man);
1080: else
1081: man_valid_post(man);
1082: man->next = ROFF_NEXT_SIBLING;
1083: }
1084:
1085: void
1086: roff_word_append(struct roff_man *man, const char *word)
1087: {
1088: struct roff_node *n;
1089: char *addstr, *newstr;
1090:
1091: n = man->last;
1092: addstr = roff_strdup(man->roff, word);
1093: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
1094: free(addstr);
1095: free(n->string);
1096: n->string = newstr;
1097: man->next = ROFF_NEXT_SIBLING;
1.140 schwarze 1098: }
1099:
1100: void
1101: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
1102: {
1103: struct roff_node *n;
1104:
1105: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
1106: roff_node_append(man, n);
1107: man->next = ROFF_NEXT_CHILD;
1108: }
1109:
1110: struct roff_node *
1111: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
1112: {
1113: struct roff_node *n;
1114:
1115: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
1116: roff_node_append(man, n);
1117: man->next = ROFF_NEXT_CHILD;
1118: return(n);
1.139 schwarze 1119: }
1120:
1.138 schwarze 1121: struct roff_node *
1122: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
1123: {
1124: struct roff_node *n;
1125:
1126: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
1127: roff_node_append(man, n);
1128: man->next = ROFF_NEXT_CHILD;
1129: return(n);
1130: }
1131:
1132: struct roff_node *
1133: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1134: {
1135: struct roff_node *n;
1136:
1137: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1138: roff_node_append(man, n);
1139: man->next = ROFF_NEXT_CHILD;
1140: return(n);
1.139 schwarze 1141: }
1142:
1143: void
1144: roff_addeqn(struct roff_man *man, const struct eqn *eqn)
1145: {
1146: struct roff_node *n;
1147:
1148: n = roff_node_alloc(man, eqn->ln, eqn->pos, ROFFT_EQN, TOKEN_NONE);
1149: n->eqn = eqn;
1150: if (eqn->ln > man->last->line)
1151: n->flags |= MDOC_LINE;
1152: roff_node_append(man, n);
1153: man->next = ROFF_NEXT_SIBLING;
1154: }
1155:
1156: void
1157: roff_addtbl(struct roff_man *man, const struct tbl_span *tbl)
1158: {
1159: struct roff_node *n;
1160:
1161: if (man->macroset == MACROSET_MAN)
1162: man_breakscope(man, TOKEN_NONE);
1163: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
1164: n->span = tbl;
1165: roff_node_append(man, n);
1166: if (man->macroset == MACROSET_MDOC)
1167: mdoc_valid_post(man);
1168: else
1169: man_valid_post(man);
1170: man->next = ROFF_NEXT_SIBLING;
1.138 schwarze 1171: }
1172:
1173: void
1174: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1175: {
1176:
1177: /* Adjust siblings. */
1178:
1179: if (n->prev)
1180: n->prev->next = n->next;
1181: if (n->next)
1182: n->next->prev = n->prev;
1183:
1184: /* Adjust parent. */
1185:
1186: if (n->parent != NULL) {
1187: n->parent->nchild--;
1188: if (n->parent->child == n)
1189: n->parent->child = n->next;
1190: if (n->parent->last == n)
1191: n->parent->last = n->prev;
1192: }
1193:
1194: /* Adjust parse point. */
1195:
1196: if (man == NULL)
1197: return;
1198: if (man->last == n) {
1199: if (n->prev == NULL) {
1200: man->last = n->parent;
1201: man->next = ROFF_NEXT_CHILD;
1202: } else {
1203: man->last = n->prev;
1204: man->next = ROFF_NEXT_SIBLING;
1205: }
1206: }
1207: if (man->first == n)
1208: man->first = NULL;
1209: }
1210:
1211: void
1212: roff_node_free(struct roff_node *n)
1213: {
1214:
1215: if (n->args != NULL)
1216: mdoc_argv_free(n->args);
1217: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1218: free(n->norm);
1219: free(n->string);
1220: free(n);
1221: }
1222:
1223: void
1224: roff_node_delete(struct roff_man *man, struct roff_node *n)
1225: {
1226:
1227: while (n->child != NULL)
1228: roff_node_delete(man, n->child);
1229: assert(n->nchild == 0);
1230: roff_node_unlink(man, n);
1231: roff_node_free(n);
1.141 schwarze 1232: }
1233:
1234: void
1235: deroff(char **dest, const struct roff_node *n)
1236: {
1237: char *cp;
1238: size_t sz;
1239:
1240: if (n->type != ROFFT_TEXT) {
1241: for (n = n->child; n != NULL; n = n->next)
1242: deroff(dest, n);
1243: return;
1244: }
1245:
1246: /* Skip leading whitespace and escape sequences. */
1247:
1248: cp = n->string;
1249: while (*cp != '\0') {
1250: if ('\\' == *cp) {
1251: cp++;
1252: mandoc_escape((const char **)&cp, NULL, NULL);
1253: } else if (isspace((unsigned char)*cp))
1254: cp++;
1255: else
1256: break;
1257: }
1258:
1259: /* Skip trailing whitespace. */
1260:
1261: for (sz = strlen(cp); sz; sz--)
1262: if ( ! isspace((unsigned char)cp[sz-1]))
1263: break;
1264:
1265: /* Skip empty strings. */
1266:
1267: if (sz == 0)
1268: return;
1269:
1270: if (*dest == NULL) {
1271: *dest = mandoc_strndup(cp, sz);
1272: return;
1273: }
1274:
1275: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1276: free(*dest);
1277: *dest = cp;
1.138 schwarze 1278: }
1279:
1280: /* --- main functions of the roff parser ---------------------------------- */
1281:
1.8 schwarze 1282: /*
1.79 schwarze 1283: * In the current line, expand escape sequences that tend to get
1284: * used in numerical expressions and conditional requests.
1285: * Also check the syntax of the remaining escape sequences.
1.8 schwarze 1286: */
1.45 schwarze 1287: static enum rofferr
1.110 schwarze 1288: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.8 schwarze 1289: {
1.81 schwarze 1290: char ubuf[24]; /* buffer to print the number */
1.78 schwarze 1291: const char *start; /* start of the string to process */
1.82 schwarze 1292: char *stesc; /* start of an escape sequence ('\\') */
1.23 schwarze 1293: const char *stnam; /* start of the name, after "[(*" */
1294: const char *cp; /* end of the name, e.g. before ']' */
1295: const char *res; /* the string to be substituted */
1.110 schwarze 1296: char *nbuf; /* new buffer to copy buf->buf to */
1.53 schwarze 1297: size_t maxl; /* expected length of the escape name */
1298: size_t naml; /* actual length of the escape name */
1.109 schwarze 1299: enum mandoc_esc esc; /* type of the escape sequence */
1300: int inaml; /* length returned from mandoc_escape() */
1.53 schwarze 1301: int expand_count; /* to avoid infinite loops */
1.79 schwarze 1302: int npos; /* position in numeric expression */
1.91 schwarze 1303: int arg_complete; /* argument not interrupted by eol */
1.79 schwarze 1304: char term; /* character terminating the escape */
1.8 schwarze 1305:
1.43 schwarze 1306: expand_count = 0;
1.110 schwarze 1307: start = buf->buf + pos;
1.78 schwarze 1308: stesc = strchr(start, '\0') - 1;
1309: while (stesc-- > start) {
1.43 schwarze 1310:
1.78 schwarze 1311: /* Search backwards for the next backslash. */
1312:
1.110 schwarze 1313: if (*stesc != '\\')
1.78 schwarze 1314: continue;
1315:
1316: /* If it is escaped, skip it. */
1317:
1318: for (cp = stesc - 1; cp >= start; cp--)
1.110 schwarze 1319: if (*cp != '\\')
1.78 schwarze 1320: break;
1321:
1.110 schwarze 1322: if ((stesc - cp) % 2 == 0) {
1.82 schwarze 1323: stesc = (char *)cp;
1.78 schwarze 1324: continue;
1325: }
1.23 schwarze 1326:
1.79 schwarze 1327: /* Decide whether to expand or to check only. */
1.23 schwarze 1328:
1.79 schwarze 1329: term = '\0';
1.78 schwarze 1330: cp = stesc + 1;
1.53 schwarze 1331: switch (*cp) {
1.80 schwarze 1332: case '*':
1.53 schwarze 1333: res = NULL;
1334: break;
1.80 schwarze 1335: case 'B':
1.79 schwarze 1336: /* FALLTHROUGH */
1.80 schwarze 1337: case 'w':
1.79 schwarze 1338: term = cp[1];
1339: /* FALLTHROUGH */
1.80 schwarze 1340: case 'n':
1.53 schwarze 1341: res = ubuf;
1342: break;
1343: default:
1.109 schwarze 1344: esc = mandoc_escape(&cp, &stnam, &inaml);
1345: if (esc == ESCAPE_ERROR ||
1346: (esc == ESCAPE_SPECIAL &&
1347: mchars_spec2cp(r->mchars, stnam, inaml) < 0))
1.92 schwarze 1348: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.110 schwarze 1349: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1350: "%.*s", (int)(cp - stesc), stesc);
1.78 schwarze 1351: continue;
1.42 schwarze 1352: }
1353:
1.78 schwarze 1354: if (EXPAND_LIMIT < ++expand_count) {
1355: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.110 schwarze 1356: ln, (int)(stesc - buf->buf), NULL);
1.78 schwarze 1357: return(ROFF_IGN);
1358: }
1.23 schwarze 1359:
1360: /*
1361: * The third character decides the length
1.53 schwarze 1362: * of the name of the string or register.
1.23 schwarze 1363: * Save a pointer to the name.
1364: */
1365:
1.110 schwarze 1366: if (term == '\0') {
1.79 schwarze 1367: switch (*++cp) {
1.80 schwarze 1368: case '\0':
1.79 schwarze 1369: maxl = 0;
1370: break;
1.80 schwarze 1371: case '(':
1.79 schwarze 1372: cp++;
1373: maxl = 2;
1374: break;
1.80 schwarze 1375: case '[':
1.79 schwarze 1376: cp++;
1377: term = ']';
1378: maxl = 0;
1379: break;
1380: default:
1381: maxl = 1;
1382: break;
1383: }
1384: } else {
1385: cp += 2;
1.8 schwarze 1386: maxl = 0;
1387: }
1.23 schwarze 1388: stnam = cp;
1.8 schwarze 1389:
1.23 schwarze 1390: /* Advance to the end of the name. */
1.8 schwarze 1391:
1.125 schwarze 1392: naml = 0;
1.91 schwarze 1393: arg_complete = 1;
1.125 schwarze 1394: while (maxl == 0 || naml < maxl) {
1.110 schwarze 1395: if (*cp == '\0') {
1.92 schwarze 1396: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 1397: ln, (int)(stesc - buf->buf), stesc);
1.91 schwarze 1398: arg_complete = 0;
1.79 schwarze 1399: break;
1.42 schwarze 1400: }
1.110 schwarze 1401: if (maxl == 0 && *cp == term) {
1.79 schwarze 1402: cp++;
1.125 schwarze 1403: break;
1404: }
1405: if (*cp++ != '\\' || stesc[1] != 'w') {
1406: naml++;
1407: continue;
1408: }
1409: switch (mandoc_escape(&cp, NULL, NULL)) {
1410: case ESCAPE_SPECIAL:
1411: /* FALLTHROUGH */
1412: case ESCAPE_UNICODE:
1413: /* FALLTHROUGH */
1414: case ESCAPE_NUMBERED:
1415: /* FALLTHROUGH */
1416: case ESCAPE_OVERSTRIKE:
1417: naml++;
1418: break;
1419: default:
1.8 schwarze 1420: break;
1.79 schwarze 1421: }
1.8 schwarze 1422: }
1423:
1.23 schwarze 1424: /*
1425: * Retrieve the replacement string; if it is
1426: * undefined, resume searching for escapes.
1427: */
1428:
1.79 schwarze 1429: switch (stesc[1]) {
1.80 schwarze 1430: case '*':
1.91 schwarze 1431: if (arg_complete)
1432: res = roff_getstrn(r, stnam, naml);
1.79 schwarze 1433: break;
1.80 schwarze 1434: case 'B':
1.79 schwarze 1435: npos = 0;
1.91 schwarze 1436: ubuf[0] = arg_complete &&
1.133 schwarze 1437: roff_evalnum(r, ln, stnam, &npos,
1438: NULL, ROFFNUM_SCALE) &&
1.91 schwarze 1439: stnam + npos + 1 == cp ? '1' : '0';
1.79 schwarze 1440: ubuf[1] = '\0';
1441: break;
1.80 schwarze 1442: case 'n':
1.91 schwarze 1443: if (arg_complete)
1444: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1445: roff_getregn(r, stnam, naml));
1446: else
1447: ubuf[0] = '\0';
1.79 schwarze 1448: break;
1.80 schwarze 1449: case 'w':
1.91 schwarze 1450: /* use even incomplete args */
1.81 schwarze 1451: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.79 schwarze 1452: 24 * (int)naml);
1453: break;
1454: }
1.8 schwarze 1455:
1.110 schwarze 1456: if (res == NULL) {
1.92 schwarze 1457: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1458: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1459: "%.*s", (int)naml, stnam);
1.37 schwarze 1460: res = "";
1.118 schwarze 1461: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1462: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1463: ln, (int)(stesc - buf->buf), NULL);
1464: return(ROFF_IGN);
1.8 schwarze 1465: }
1466:
1.23 schwarze 1467: /* Replace the escape sequence by the string. */
1468:
1.82 schwarze 1469: *stesc = '\0';
1.110 schwarze 1470: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1471: buf->buf, res, cp) + 1;
1.8 schwarze 1472:
1.78 schwarze 1473: /* Prepare for the next replacement. */
1.8 schwarze 1474:
1.78 schwarze 1475: start = nbuf + pos;
1.110 schwarze 1476: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1477: free(buf->buf);
1478: buf->buf = nbuf;
1.42 schwarze 1479: }
1.45 schwarze 1480: return(ROFF_CONT);
1.42 schwarze 1481: }
1482:
1483: /*
1.147 schwarze 1484: * Process text streams.
1.42 schwarze 1485: */
1486: static enum rofferr
1.110 schwarze 1487: roff_parsetext(struct buf *buf, int pos, int *offs)
1.42 schwarze 1488: {
1489: size_t sz;
1490: const char *start;
1.51 schwarze 1491: char *p;
1492: int isz;
1.42 schwarze 1493: enum mandoc_esc esc;
1494:
1.147 schwarze 1495: /* Spring the input line trap. */
1496:
1497: if (roffit_lines == 1) {
1498: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1499: free(buf->buf);
1500: buf->buf = p;
1501: buf->sz = isz + 1;
1502: *offs = 0;
1503: free(roffit_macro);
1504: roffit_lines = 0;
1505: return(ROFF_REPARSE);
1506: } else if (roffit_lines > 1)
1507: --roffit_lines;
1508:
1509: /* Convert all breakable hyphens into ASCII_HYPH. */
1510:
1.110 schwarze 1511: start = p = buf->buf + pos;
1.42 schwarze 1512:
1.110 schwarze 1513: while (*p != '\0') {
1.42 schwarze 1514: sz = strcspn(p, "-\\");
1515: p += sz;
1516:
1.110 schwarze 1517: if (*p == '\0')
1.42 schwarze 1518: break;
1519:
1.110 schwarze 1520: if (*p == '\\') {
1.42 schwarze 1521: /* Skip over escapes. */
1522: p++;
1.62 schwarze 1523: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.110 schwarze 1524: if (esc == ESCAPE_ERROR)
1.42 schwarze 1525: break;
1.136 schwarze 1526: while (*p == '-')
1527: p++;
1.42 schwarze 1528: continue;
1529: } else if (p == start) {
1530: p++;
1531: continue;
1532: }
1533:
1.44 schwarze 1534: if (isalpha((unsigned char)p[-1]) &&
1535: isalpha((unsigned char)p[1]))
1.42 schwarze 1536: *p = ASCII_HYPH;
1537: p++;
1.8 schwarze 1538: }
1.42 schwarze 1539: return(ROFF_CONT);
1.8 schwarze 1540: }
1541:
1.1 schwarze 1542: enum rofferr
1.110 schwarze 1543: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.1 schwarze 1544: {
1545: enum rofft t;
1.27 schwarze 1546: enum rofferr e;
1.110 schwarze 1547: int pos; /* parse point */
1.115 schwarze 1548: int spos; /* saved parse point for messages */
1.110 schwarze 1549: int ppos; /* original offset in buf->buf */
1550: int ctl; /* macro line (boolean) */
1551:
1552: ppos = pos = *offs;
1.1 schwarze 1553:
1.102 schwarze 1554: /* Handle in-line equation delimiters. */
1555:
1.108 schwarze 1556: if (r->tbl == NULL &&
1557: r->last_eqn != NULL && r->last_eqn->delim &&
1.102 schwarze 1558: (r->eqn == NULL || r->eqn_inline)) {
1.110 schwarze 1559: e = roff_eqndelim(r, buf, pos);
1.102 schwarze 1560: if (e == ROFF_REPARSE)
1561: return(e);
1562: assert(e == ROFF_CONT);
1563: }
1564:
1565: /* Expand some escape sequences. */
1.8 schwarze 1566:
1.110 schwarze 1567: e = roff_res(r, buf, ln, pos);
1568: if (e == ROFF_IGN)
1.45 schwarze 1569: return(e);
1.110 schwarze 1570: assert(e == ROFF_CONT);
1.8 schwarze 1571:
1.110 schwarze 1572: ctl = roff_getcontrol(r, buf->buf, &pos);
1.35 schwarze 1573:
1.8 schwarze 1574: /*
1.2 schwarze 1575: * First, if a scope is open and we're not a macro, pass the
1.124 schwarze 1576: * text through the macro's filter.
1577: * Equations process all content themselves.
1578: * Tables process almost all content themselves, but we want
1579: * to warn about macros before passing it there.
1.2 schwarze 1580: */
1581:
1.124 schwarze 1582: if (r->last != NULL && ! ctl) {
1.2 schwarze 1583: t = r->last->tok;
1584: assert(roffs[t].text);
1.110 schwarze 1585: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1586: assert(e == ROFF_IGN || e == ROFF_CONT);
1587: if (e != ROFF_CONT)
1.32 schwarze 1588: return(e);
1.54 schwarze 1589: }
1.124 schwarze 1590: if (r->eqn != NULL)
1.110 schwarze 1591: return(eqn_read(&r->eqn, ln, buf->buf, ppos, offs));
1.124 schwarze 1592: if (r->tbl != NULL && ( ! ctl || buf->buf[pos] == '\0'))
1.131 schwarze 1593: return(tbl_read(r->tbl, ln, buf->buf, ppos));
1.124 schwarze 1594: if ( ! ctl)
1.110 schwarze 1595: return(roff_parsetext(buf, pos, offs));
1.100 schwarze 1596:
1597: /* Skip empty request lines. */
1598:
1.110 schwarze 1599: if (buf->buf[pos] == '"') {
1.100 schwarze 1600: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1601: ln, pos, NULL);
1602: return(ROFF_IGN);
1.110 schwarze 1603: } else if (buf->buf[pos] == '\0')
1.100 schwarze 1604: return(ROFF_IGN);
1.2 schwarze 1605:
1606: /*
1607: * If a scope is open, go to the child handler for that macro,
1608: * as it may want to preprocess before doing anything with it.
1.32 schwarze 1609: * Don't do so if an equation is open.
1.2 schwarze 1610: */
1611:
1612: if (r->last) {
1.1 schwarze 1613: t = r->last->tok;
1614: assert(roffs[t].sub);
1.110 schwarze 1615: return((*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs));
1.2 schwarze 1616: }
1617:
1.115 schwarze 1618: /* No scope is open. This is a new request or macro. */
1619:
1620: spos = pos;
1621: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1622:
1623: /* Tables ignore most macros. */
1624:
1625: if (r->tbl != NULL && (t == ROFF_MAX || t == ROFF_TS)) {
1626: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1627: ln, pos, buf->buf + spos);
1.129 schwarze 1628: if (t == ROFF_TS)
1629: return(ROFF_IGN);
1630: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1631: pos++;
1632: while (buf->buf[pos] != '\0' && buf->buf[pos] == ' ')
1633: pos++;
1634: return(tbl_read(r->tbl, ln, buf->buf, pos));
1.115 schwarze 1635: }
1636:
1.2 schwarze 1637: /*
1.115 schwarze 1638: * This is neither a roff request nor a user-defined macro.
1639: * Let the standard macro set parsers handle it.
1.2 schwarze 1640: */
1641:
1.115 schwarze 1642: if (t == ROFF_MAX)
1.1 schwarze 1643: return(ROFF_CONT);
1.115 schwarze 1644:
1645: /* Execute a roff request or a user defined macro. */
1.1 schwarze 1646:
1.2 schwarze 1647: assert(roffs[t].proc);
1.110 schwarze 1648: return((*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs));
1.2 schwarze 1649: }
1650:
1.27 schwarze 1651: void
1.2 schwarze 1652: roff_endparse(struct roff *r)
1653: {
1.1 schwarze 1654:
1.27 schwarze 1655: if (r->last)
1.94 schwarze 1656: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1657: r->last->line, r->last->col,
1658: roffs[r->last->tok].name);
1.27 schwarze 1659:
1.32 schwarze 1660: if (r->eqn) {
1.94 schwarze 1661: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1662: r->eqn->eqn.ln, r->eqn->eqn.pos, "EQ");
1.41 schwarze 1663: eqn_end(&r->eqn);
1.32 schwarze 1664: }
1665:
1.27 schwarze 1666: if (r->tbl) {
1.94 schwarze 1667: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1668: r->tbl->line, r->tbl->pos, "TS");
1.41 schwarze 1669: tbl_end(&r->tbl);
1.27 schwarze 1670: }
1.1 schwarze 1671: }
1672:
1673: /*
1674: * Parse a roff node's type from the input buffer. This must be in the
1675: * form of ".foo xxx" in the usual way.
1676: */
1677: static enum rofft
1.87 schwarze 1678: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.1 schwarze 1679: {
1.87 schwarze 1680: char *cp;
1.16 schwarze 1681: const char *mac;
1682: size_t maclen;
1.1 schwarze 1683: enum rofft t;
1684:
1.87 schwarze 1685: cp = buf + *pos;
1686:
1687: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.1 schwarze 1688: return(ROFF_MAX);
1689:
1.87 schwarze 1690: mac = cp;
1691: maclen = roff_getname(r, &cp, ln, ppos);
1.1 schwarze 1692:
1.16 schwarze 1693: t = (r->current_string = roff_getstrn(r, mac, maclen))
1.42 schwarze 1694: ? ROFF_USERDEF : roffhash_find(mac, maclen);
1.1 schwarze 1695:
1.87 schwarze 1696: if (ROFF_MAX != t)
1697: *pos = cp - buf;
1.1 schwarze 1698:
1699: return(t);
1700: }
1701:
1.138 schwarze 1702: /* --- handling of request blocks ----------------------------------------- */
1703:
1.1 schwarze 1704: static enum rofferr
1.2 schwarze 1705: roff_cblock(ROFF_ARGS)
1.1 schwarze 1706: {
1707:
1.2 schwarze 1708: /*
1709: * A block-close `..' should only be invoked as a child of an
1710: * ignore macro, otherwise raise a warning and just ignore it.
1711: */
1712:
1.110 schwarze 1713: if (r->last == NULL) {
1.94 schwarze 1714: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1715: ln, ppos, "..");
1.2 schwarze 1716: return(ROFF_IGN);
1717: }
1.1 schwarze 1718:
1.2 schwarze 1719: switch (r->last->tok) {
1.80 schwarze 1720: case ROFF_am:
1.93 schwarze 1721: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.2 schwarze 1722: /* FALLTHROUGH */
1.80 schwarze 1723: case ROFF_ami:
1.2 schwarze 1724: /* FALLTHROUGH */
1.80 schwarze 1725: case ROFF_de:
1.23 schwarze 1726: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.2 schwarze 1727: /* FALLTHROUGH */
1.80 schwarze 1728: case ROFF_dei:
1.2 schwarze 1729: /* FALLTHROUGH */
1.80 schwarze 1730: case ROFF_ig:
1.2 schwarze 1731: break;
1732: default:
1.94 schwarze 1733: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1734: ln, ppos, "..");
1.1 schwarze 1735: return(ROFF_IGN);
1.2 schwarze 1736: }
1737:
1.110 schwarze 1738: if (buf->buf[pos] != '\0')
1.90 schwarze 1739: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 1740: ".. %s", buf->buf + pos);
1.2 schwarze 1741:
1742: roffnode_pop(r);
1743: roffnode_cleanscope(r);
1744: return(ROFF_IGN);
1745:
1746: }
1.1 schwarze 1747:
1.2 schwarze 1748: static void
1749: roffnode_cleanscope(struct roff *r)
1750: {
1.1 schwarze 1751:
1.2 schwarze 1752: while (r->last) {
1.46 schwarze 1753: if (--r->last->endspan != 0)
1.2 schwarze 1754: break;
1755: roffnode_pop(r);
1756: }
1757: }
1.1 schwarze 1758:
1.68 schwarze 1759: static void
1760: roff_ccond(struct roff *r, int ln, int ppos)
1.2 schwarze 1761: {
1.1 schwarze 1762:
1.2 schwarze 1763: if (NULL == r->last) {
1.94 schwarze 1764: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1765: ln, ppos, "\\}");
1.68 schwarze 1766: return;
1.2 schwarze 1767: }
1.1 schwarze 1768:
1.2 schwarze 1769: switch (r->last->tok) {
1.80 schwarze 1770: case ROFF_el:
1.2 schwarze 1771: /* FALLTHROUGH */
1.80 schwarze 1772: case ROFF_ie:
1.2 schwarze 1773: /* FALLTHROUGH */
1.80 schwarze 1774: case ROFF_if:
1.2 schwarze 1775: break;
1776: default:
1.94 schwarze 1777: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1778: ln, ppos, "\\}");
1.68 schwarze 1779: return;
1.2 schwarze 1780: }
1.1 schwarze 1781:
1.2 schwarze 1782: if (r->last->endspan > -1) {
1.94 schwarze 1783: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1784: ln, ppos, "\\}");
1.68 schwarze 1785: return;
1.2 schwarze 1786: }
1787:
1788: roffnode_pop(r);
1789: roffnode_cleanscope(r);
1.68 schwarze 1790: return;
1.1 schwarze 1791: }
1792:
1793: static enum rofferr
1.2 schwarze 1794: roff_block(ROFF_ARGS)
1.1 schwarze 1795: {
1.93 schwarze 1796: const char *name;
1797: char *iname, *cp;
1.86 schwarze 1798: size_t namesz;
1.16 schwarze 1799:
1.93 schwarze 1800: /* Ignore groff compatibility mode for now. */
1.2 schwarze 1801:
1.110 schwarze 1802: if (tok == ROFF_de1)
1.93 schwarze 1803: tok = ROFF_de;
1.123 schwarze 1804: else if (tok == ROFF_dei1)
1805: tok = ROFF_dei;
1.110 schwarze 1806: else if (tok == ROFF_am1)
1.93 schwarze 1807: tok = ROFF_am;
1.123 schwarze 1808: else if (tok == ROFF_ami1)
1809: tok = ROFF_ami;
1.93 schwarze 1810:
1811: /* Parse the macro name argument. */
1812:
1.110 schwarze 1813: cp = buf->buf + pos;
1814: if (tok == ROFF_ig) {
1.93 schwarze 1815: iname = NULL;
1816: namesz = 0;
1817: } else {
1818: iname = cp;
1819: namesz = roff_getname(r, &cp, ln, ppos);
1820: iname[namesz] = '\0';
1821: }
1.22 schwarze 1822:
1.93 schwarze 1823: /* Resolve the macro name argument if it is indirect. */
1.22 schwarze 1824:
1.110 schwarze 1825: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1826: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.93 schwarze 1827: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1828: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1829: "%.*s", (int)namesz, iname);
1830: namesz = 0;
1831: } else
1832: namesz = strlen(name);
1833: } else
1834: name = iname;
1.22 schwarze 1835:
1.110 schwarze 1836: if (namesz == 0 && tok != ROFF_ig) {
1.93 schwarze 1837: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1838: ln, ppos, roffs[tok].name);
1839: return(ROFF_IGN);
1840: }
1.2 schwarze 1841:
1.16 schwarze 1842: roffnode_push(r, tok, name, ln, ppos);
1843:
1844: /*
1845: * At the beginning of a `de' macro, clear the existing string
1846: * with the same name, if there is one. New content will be
1.66 schwarze 1847: * appended from roff_block_text() in multiline mode.
1.16 schwarze 1848: */
1.22 schwarze 1849:
1.110 schwarze 1850: if (tok == ROFF_de || tok == ROFF_dei)
1.86 schwarze 1851: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.2 schwarze 1852:
1.110 schwarze 1853: if (*cp == '\0')
1.2 schwarze 1854: return(ROFF_IGN);
1.1 schwarze 1855:
1.93 schwarze 1856: /* Get the custom end marker. */
1.22 schwarze 1857:
1.93 schwarze 1858: iname = cp;
1.86 schwarze 1859: namesz = roff_getname(r, &cp, ln, ppos);
1.93 schwarze 1860:
1861: /* Resolve the end marker if it is indirect. */
1862:
1.110 schwarze 1863: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1864: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.93 schwarze 1865: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1866: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1867: "%.*s", (int)namesz, iname);
1868: namesz = 0;
1869: } else
1870: namesz = strlen(name);
1871: } else
1872: name = iname;
1873:
1.86 schwarze 1874: if (namesz)
1875: r->last->end = mandoc_strndup(name, namesz);
1.2 schwarze 1876:
1.110 schwarze 1877: if (*cp != '\0')
1.90 schwarze 1878: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1879: ln, pos, ".%s ... %s", roffs[tok].name, cp);
1.1 schwarze 1880:
1881: return(ROFF_IGN);
1882: }
1883:
1884: static enum rofferr
1.2 schwarze 1885: roff_block_sub(ROFF_ARGS)
1.1 schwarze 1886: {
1.2 schwarze 1887: enum rofft t;
1888: int i, j;
1889:
1890: /*
1891: * First check whether a custom macro exists at this level. If
1892: * it does, then check against it. This is some of groff's
1893: * stranger behaviours. If we encountered a custom end-scope
1894: * tag and that tag also happens to be a "real" macro, then we
1895: * need to try interpreting it again as a real macro. If it's
1896: * not, then return ignore. Else continue.
1897: */
1898:
1899: if (r->last->end) {
1.35 schwarze 1900: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.110 schwarze 1901: if (buf->buf[i] != r->last->end[j])
1.2 schwarze 1902: break;
1.1 schwarze 1903:
1.110 schwarze 1904: if (r->last->end[j] == '\0' &&
1905: (buf->buf[i] == '\0' ||
1906: buf->buf[i] == ' ' ||
1907: buf->buf[i] == '\t')) {
1.2 schwarze 1908: roffnode_pop(r);
1909: roffnode_cleanscope(r);
1.1 schwarze 1910:
1.110 schwarze 1911: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.35 schwarze 1912: i++;
1913:
1914: pos = i;
1.110 schwarze 1915: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1916: ROFF_MAX)
1.2 schwarze 1917: return(ROFF_RERUN);
1918: return(ROFF_IGN);
1919: }
1.1 schwarze 1920: }
1921:
1.2 schwarze 1922: /*
1923: * If we have no custom end-query or lookup failed, then try
1924: * pulling it out of the hashtable.
1925: */
1.1 schwarze 1926:
1.110 schwarze 1927: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.1 schwarze 1928:
1.110 schwarze 1929: if (t != ROFF_cblock) {
1930: if (tok != ROFF_ig)
1931: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.1 schwarze 1932: return(ROFF_IGN);
1.16 schwarze 1933: }
1.1 schwarze 1934:
1.2 schwarze 1935: assert(roffs[t].proc);
1.110 schwarze 1936: return((*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs));
1.2 schwarze 1937: }
1938:
1939: static enum rofferr
1940: roff_block_text(ROFF_ARGS)
1941: {
1942:
1.110 schwarze 1943: if (tok != ROFF_ig)
1944: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.16 schwarze 1945:
1.2 schwarze 1946: return(ROFF_IGN);
1947: }
1948:
1949: static enum rofferr
1950: roff_cond_sub(ROFF_ARGS)
1951: {
1952: enum rofft t;
1.37 schwarze 1953: char *ep;
1.71 schwarze 1954: int rr;
1.2 schwarze 1955:
1956: rr = r->last->rule;
1.37 schwarze 1957: roffnode_cleanscope(r);
1.110 schwarze 1958: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.2 schwarze 1959:
1.37 schwarze 1960: /*
1.50 schwarze 1961: * Fully handle known macros when they are structurally
1962: * required or when the conditional evaluated to true.
1.5 schwarze 1963: */
1964:
1.110 schwarze 1965: if ((t != ROFF_MAX) &&
1966: (rr || roffs[t].flags & ROFFMAC_STRUCT)) {
1.50 schwarze 1967: assert(roffs[t].proc);
1.110 schwarze 1968: return((*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs));
1.50 schwarze 1969: }
1.39 schwarze 1970:
1.69 schwarze 1971: /*
1972: * If `\}' occurs on a macro line without a preceding macro,
1973: * drop the line completely.
1974: */
1975:
1.110 schwarze 1976: ep = buf->buf + pos;
1977: if (ep[0] == '\\' && ep[1] == '}')
1.71 schwarze 1978: rr = 0;
1.69 schwarze 1979:
1.50 schwarze 1980: /* Always check for the closing delimiter `\}'. */
1.39 schwarze 1981:
1.110 schwarze 1982: while ((ep = strchr(ep, '\\')) != NULL) {
1983: if (*(++ep) == '}') {
1.70 schwarze 1984: *ep = '&';
1.110 schwarze 1985: roff_ccond(r, ln, ep - buf->buf - 1);
1.70 schwarze 1986: }
1.119 schwarze 1987: if (*ep != '\0')
1988: ++ep;
1.50 schwarze 1989: }
1.71 schwarze 1990: return(rr ? ROFF_CONT : ROFF_IGN);
1.2 schwarze 1991: }
1992:
1993: static enum rofferr
1994: roff_cond_text(ROFF_ARGS)
1995: {
1.37 schwarze 1996: char *ep;
1.71 schwarze 1997: int rr;
1.2 schwarze 1998:
1999: rr = r->last->rule;
1.37 schwarze 2000: roffnode_cleanscope(r);
1.1 schwarze 2001:
1.110 schwarze 2002: ep = buf->buf + pos;
2003: while ((ep = strchr(ep, '\\')) != NULL) {
2004: if (*(++ep) == '}') {
1.70 schwarze 2005: *ep = '&';
1.110 schwarze 2006: roff_ccond(r, ln, ep - buf->buf - 1);
1.70 schwarze 2007: }
1.119 schwarze 2008: if (*ep != '\0')
2009: ++ep;
1.2 schwarze 2010: }
1.71 schwarze 2011: return(rr ? ROFF_CONT : ROFF_IGN);
1.2 schwarze 2012: }
2013:
1.138 schwarze 2014: /* --- handling of numeric and conditional expressions -------------------- */
2015:
1.77 schwarze 2016: /*
2017: * Parse a single signed integer number. Stop at the first non-digit.
2018: * If there is at least one digit, return success and advance the
2019: * parse point, else return failure and let the parse point unchanged.
2020: * Ignore overflows, treat them just like the C language.
2021: */
1.56 schwarze 2022: static int
1.133 schwarze 2023: roff_getnum(const char *v, int *pos, int *res, int flags)
1.56 schwarze 2024: {
1.133 schwarze 2025: int myres, scaled, n, p;
1.79 schwarze 2026:
2027: if (NULL == res)
2028: res = &myres;
1.56 schwarze 2029:
2030: p = *pos;
2031: n = v[p] == '-';
1.133 schwarze 2032: if (n || v[p] == '+')
1.56 schwarze 2033: p++;
2034:
1.133 schwarze 2035: if (flags & ROFFNUM_WHITE)
2036: while (isspace((unsigned char)v[p]))
2037: p++;
2038:
1.56 schwarze 2039: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.77 schwarze 2040: *res = 10 * *res + v[p] - '0';
1.56 schwarze 2041: if (p == *pos + n)
2042: return 0;
2043:
2044: if (n)
2045: *res = -*res;
2046:
1.126 schwarze 2047: /* Each number may be followed by one optional scaling unit. */
2048:
2049: switch (v[p]) {
2050: case 'f':
1.133 schwarze 2051: scaled = *res * 65536;
1.126 schwarze 2052: break;
2053: case 'i':
1.133 schwarze 2054: scaled = *res * 240;
1.126 schwarze 2055: break;
2056: case 'c':
1.133 schwarze 2057: scaled = *res * 240 / 2.54;
1.126 schwarze 2058: break;
2059: case 'v':
1.148 ! schwarze 2060: /* FALLTHROUGH */
1.126 schwarze 2061: case 'P':
1.133 schwarze 2062: scaled = *res * 40;
1.126 schwarze 2063: break;
2064: case 'm':
1.148 ! schwarze 2065: /* FALLTHROUGH */
1.126 schwarze 2066: case 'n':
1.133 schwarze 2067: scaled = *res * 24;
1.126 schwarze 2068: break;
2069: case 'p':
1.133 schwarze 2070: scaled = *res * 10 / 3;
1.126 schwarze 2071: break;
2072: case 'u':
1.133 schwarze 2073: scaled = *res;
1.126 schwarze 2074: break;
2075: case 'M':
1.133 schwarze 2076: scaled = *res * 6 / 25;
1.126 schwarze 2077: break;
2078: default:
1.133 schwarze 2079: scaled = *res;
1.126 schwarze 2080: p--;
2081: break;
2082: }
1.133 schwarze 2083: if (flags & ROFFNUM_SCALE)
2084: *res = scaled;
1.126 schwarze 2085:
2086: *pos = p + 1;
2087: return(1);
1.56 schwarze 2088: }
2089:
1.71 schwarze 2090: /*
2091: * Evaluate a string comparison condition.
2092: * The first character is the delimiter.
2093: * Succeed if the string up to its second occurrence
2094: * matches the string up to its third occurence.
2095: * Advance the cursor after the third occurrence
2096: * or lacking that, to the end of the line.
2097: */
2098: static int
2099: roff_evalstrcond(const char *v, int *pos)
2100: {
2101: const char *s1, *s2, *s3;
2102: int match;
2103:
2104: match = 0;
2105: s1 = v + *pos; /* initial delimiter */
2106: s2 = s1 + 1; /* for scanning the first string */
2107: s3 = strchr(s2, *s1); /* for scanning the second string */
2108:
2109: if (NULL == s3) /* found no middle delimiter */
2110: goto out;
2111:
2112: while ('\0' != *++s3) {
2113: if (*s2 != *s3) { /* mismatch */
2114: s3 = strchr(s3, *s1);
2115: break;
2116: }
2117: if (*s3 == *s1) { /* found the final delimiter */
2118: match = 1;
2119: break;
2120: }
2121: s2++;
2122: }
2123:
2124: out:
2125: if (NULL == s3)
2126: s3 = strchr(s2, '\0');
1.114 schwarze 2127: else if (*s3 != '\0')
1.71 schwarze 2128: s3++;
2129: *pos = s3 - v;
2130: return(match);
2131: }
2132:
1.77 schwarze 2133: /*
2134: * Evaluate an optionally negated single character, numerical,
2135: * or string condition.
2136: */
1.71 schwarze 2137: static int
1.143 schwarze 2138: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.5 schwarze 2139: {
1.143 schwarze 2140: char *cp, *name;
2141: size_t sz;
1.113 schwarze 2142: int number, savepos, wanttrue;
1.5 schwarze 2143:
1.71 schwarze 2144: if ('!' == v[*pos]) {
2145: wanttrue = 0;
2146: (*pos)++;
2147: } else
2148: wanttrue = 1;
2149:
1.5 schwarze 2150: switch (v[*pos]) {
1.112 schwarze 2151: case '\0':
2152: return(0);
1.80 schwarze 2153: case 'n':
1.71 schwarze 2154: /* FALLTHROUGH */
1.80 schwarze 2155: case 'o':
1.5 schwarze 2156: (*pos)++;
1.71 schwarze 2157: return(wanttrue);
1.80 schwarze 2158: case 'c':
1.71 schwarze 2159: /* FALLTHROUGH */
1.80 schwarze 2160: case 'd':
1.71 schwarze 2161: /* FALLTHROUGH */
1.80 schwarze 2162: case 'e':
1.5 schwarze 2163: /* FALLTHROUGH */
1.80 schwarze 2164: case 't':
1.111 schwarze 2165: /* FALLTHROUGH */
2166: case 'v':
1.5 schwarze 2167: (*pos)++;
1.71 schwarze 2168: return(!wanttrue);
1.143 schwarze 2169: case 'r':
2170: cp = name = v + ++*pos;
2171: sz = roff_getname(r, &cp, ln, *pos);
2172: *pos = cp - v;
2173: return((sz && roff_hasregn(r, name, sz)) == wanttrue);
1.5 schwarze 2174: default:
2175: break;
2176: }
2177:
1.113 schwarze 2178: savepos = *pos;
1.133 schwarze 2179: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.77 schwarze 2180: return((number > 0) == wanttrue);
1.113 schwarze 2181: else if (*pos == savepos)
2182: return(roff_evalstrcond(v, pos) == wanttrue);
1.77 schwarze 2183: else
1.113 schwarze 2184: return (0);
1.5 schwarze 2185: }
2186:
1.2 schwarze 2187: static enum rofferr
1.21 schwarze 2188: roff_line_ignore(ROFF_ARGS)
1.6 schwarze 2189: {
1.30 schwarze 2190:
1.21 schwarze 2191: return(ROFF_IGN);
2192: }
2193:
2194: static enum rofferr
1.123 schwarze 2195: roff_insec(ROFF_ARGS)
2196: {
2197:
2198: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
2199: ln, ppos, roffs[tok].name);
2200: return(ROFF_IGN);
2201: }
2202:
2203: static enum rofferr
2204: roff_unsupp(ROFF_ARGS)
2205: {
2206:
2207: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
2208: ln, ppos, roffs[tok].name);
2209: return(ROFF_IGN);
2210: }
2211:
2212: static enum rofferr
1.2 schwarze 2213: roff_cond(ROFF_ARGS)
2214: {
1.46 schwarze 2215:
2216: roffnode_push(r, tok, NULL, ln, ppos);
1.2 schwarze 2217:
1.80 schwarze 2218: /*
1.35 schwarze 2219: * An `.el' has no conditional body: it will consume the value
2220: * of the current rstack entry set in prior `ie' calls or
1.80 schwarze 2221: * defaults to DENY.
1.35 schwarze 2222: *
2223: * If we're not an `el', however, then evaluate the conditional.
2224: */
1.1 schwarze 2225:
1.110 schwarze 2226: r->last->rule = tok == ROFF_el ?
1.80 schwarze 2227: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.110 schwarze 2228: roff_evalcond(r, ln, buf->buf, &pos);
1.2 schwarze 2229:
1.35 schwarze 2230: /*
2231: * An if-else will put the NEGATION of the current evaluated
2232: * conditional into the stack of rules.
2233: */
2234:
1.110 schwarze 2235: if (tok == ROFF_ie) {
1.96 schwarze 2236: if (r->rstackpos + 1 == r->rstacksz) {
2237: r->rstacksz += 16;
2238: r->rstack = mandoc_reallocarray(r->rstack,
2239: r->rstacksz, sizeof(int));
1.35 schwarze 2240: }
1.71 schwarze 2241: r->rstack[++r->rstackpos] = !r->last->rule;
1.2 schwarze 2242: }
1.5 schwarze 2243:
2244: /* If the parent has false as its rule, then so do we. */
2245:
1.71 schwarze 2246: if (r->last->parent && !r->last->parent->rule)
2247: r->last->rule = 0;
1.5 schwarze 2248:
2249: /*
1.46 schwarze 2250: * Determine scope.
2251: * If there is nothing on the line after the conditional,
2252: * not even whitespace, use next-line scope.
1.5 schwarze 2253: */
1.2 schwarze 2254:
1.110 schwarze 2255: if (buf->buf[pos] == '\0') {
1.46 schwarze 2256: r->last->endspan = 2;
2257: goto out;
2258: }
2259:
1.110 schwarze 2260: while (buf->buf[pos] == ' ')
1.46 schwarze 2261: pos++;
2262:
2263: /* An opening brace requests multiline scope. */
1.2 schwarze 2264:
1.110 schwarze 2265: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.2 schwarze 2266: r->last->endspan = -1;
2267: pos += 2;
1.144 schwarze 2268: while (buf->buf[pos] == ' ')
2269: pos++;
1.46 schwarze 2270: goto out;
1.80 schwarze 2271: }
1.2 schwarze 2272:
2273: /*
1.46 schwarze 2274: * Anything else following the conditional causes
2275: * single-line scope. Warn if the scope contains
2276: * nothing but trailing whitespace.
1.2 schwarze 2277: */
2278:
1.110 schwarze 2279: if (buf->buf[pos] == '\0')
1.89 schwarze 2280: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
2281: ln, ppos, roffs[tok].name);
1.2 schwarze 2282:
1.46 schwarze 2283: r->last->endspan = 1;
1.1 schwarze 2284:
1.46 schwarze 2285: out:
1.2 schwarze 2286: *offs = pos;
2287: return(ROFF_RERUN);
1.1 schwarze 2288: }
2289:
1.2 schwarze 2290: static enum rofferr
1.7 schwarze 2291: roff_ds(ROFF_ARGS)
2292: {
1.85 schwarze 2293: char *string;
2294: const char *name;
2295: size_t namesz;
1.10 schwarze 2296:
1.123 schwarze 2297: /* Ignore groff compatibility mode for now. */
2298:
2299: if (tok == ROFF_ds1)
2300: tok = ROFF_ds;
2301: else if (tok == ROFF_as1)
2302: tok = ROFF_as;
2303:
1.10 schwarze 2304: /*
1.85 schwarze 2305: * The first word is the name of the string.
2306: * If it is empty or terminated by an escape sequence,
2307: * abort the `ds' request without defining anything.
1.10 schwarze 2308: */
1.7 schwarze 2309:
1.110 schwarze 2310: name = string = buf->buf + pos;
2311: if (*name == '\0')
1.7 schwarze 2312: return(ROFF_IGN);
2313:
1.85 schwarze 2314: namesz = roff_getname(r, &string, ln, pos);
1.110 schwarze 2315: if (name[namesz] == '\\')
1.85 schwarze 2316: return(ROFF_IGN);
2317:
2318: /* Read past the initial double-quote, if any. */
1.110 schwarze 2319: if (*string == '"')
1.7 schwarze 2320: string++;
2321:
1.10 schwarze 2322: /* The rest is the value. */
1.85 schwarze 2323: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2324: ROFF_as == tok);
1.7 schwarze 2325: return(ROFF_IGN);
2326: }
2327:
1.77 schwarze 2328: /*
2329: * Parse a single operator, one or two characters long.
2330: * If the operator is recognized, return success and advance the
2331: * parse point, else return failure and let the parse point unchanged.
2332: */
2333: static int
2334: roff_getop(const char *v, int *pos, char *res)
2335: {
2336:
2337: *res = v[*pos];
2338:
2339: switch (*res) {
1.80 schwarze 2340: case '+':
1.77 schwarze 2341: /* FALLTHROUGH */
1.80 schwarze 2342: case '-':
1.77 schwarze 2343: /* FALLTHROUGH */
1.80 schwarze 2344: case '*':
1.77 schwarze 2345: /* FALLTHROUGH */
1.80 schwarze 2346: case '/':
1.77 schwarze 2347: /* FALLTHROUGH */
1.80 schwarze 2348: case '%':
1.77 schwarze 2349: /* FALLTHROUGH */
1.80 schwarze 2350: case '&':
1.77 schwarze 2351: /* FALLTHROUGH */
1.80 schwarze 2352: case ':':
1.77 schwarze 2353: break;
2354: case '<':
2355: switch (v[*pos + 1]) {
1.80 schwarze 2356: case '=':
1.77 schwarze 2357: *res = 'l';
2358: (*pos)++;
2359: break;
1.80 schwarze 2360: case '>':
1.77 schwarze 2361: *res = '!';
2362: (*pos)++;
2363: break;
1.80 schwarze 2364: case '?':
1.77 schwarze 2365: *res = 'i';
2366: (*pos)++;
2367: break;
2368: default:
2369: break;
2370: }
2371: break;
2372: case '>':
2373: switch (v[*pos + 1]) {
1.80 schwarze 2374: case '=':
1.77 schwarze 2375: *res = 'g';
2376: (*pos)++;
2377: break;
1.80 schwarze 2378: case '?':
1.77 schwarze 2379: *res = 'a';
2380: (*pos)++;
2381: break;
2382: default:
2383: break;
2384: }
2385: break;
2386: case '=':
2387: if ('=' == v[*pos + 1])
2388: (*pos)++;
2389: break;
2390: default:
2391: return(0);
2392: }
2393: (*pos)++;
2394:
2395: return(*res);
2396: }
2397:
2398: /*
2399: * Evaluate either a parenthesized numeric expression
2400: * or a single signed integer number.
2401: */
2402: static int
1.106 schwarze 2403: roff_evalpar(struct roff *r, int ln,
1.133 schwarze 2404: const char *v, int *pos, int *res, int flags)
1.77 schwarze 2405: {
2406:
2407: if ('(' != v[*pos])
1.133 schwarze 2408: return(roff_getnum(v, pos, res, flags));
1.77 schwarze 2409:
2410: (*pos)++;
1.133 schwarze 2411: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.77 schwarze 2412: return(0);
2413:
1.79 schwarze 2414: /*
2415: * Omission of the closing parenthesis
2416: * is an error in validation mode,
2417: * but ignored in evaluation mode.
2418: */
2419:
1.77 schwarze 2420: if (')' == v[*pos])
2421: (*pos)++;
1.79 schwarze 2422: else if (NULL == res)
2423: return(0);
1.77 schwarze 2424:
2425: return(1);
2426: }
2427:
2428: /*
2429: * Evaluate a complete numeric expression.
2430: * Proceed left to right, there is no concept of precedence.
2431: */
2432: static int
1.106 schwarze 2433: roff_evalnum(struct roff *r, int ln, const char *v,
1.133 schwarze 2434: int *pos, int *res, int flags)
1.77 schwarze 2435: {
2436: int mypos, operand2;
2437: char operator;
2438:
2439: if (NULL == pos) {
2440: mypos = 0;
2441: pos = &mypos;
2442: }
2443:
1.133 schwarze 2444: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2445: while (isspace((unsigned char)v[*pos]))
2446: (*pos)++;
2447:
1.133 schwarze 2448: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.77 schwarze 2449: return(0);
2450:
2451: while (1) {
1.133 schwarze 2452: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2453: while (isspace((unsigned char)v[*pos]))
2454: (*pos)++;
2455:
2456: if ( ! roff_getop(v, pos, &operator))
2457: break;
2458:
1.133 schwarze 2459: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2460: while (isspace((unsigned char)v[*pos]))
2461: (*pos)++;
2462:
1.133 schwarze 2463: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.77 schwarze 2464: return(0);
2465:
1.133 schwarze 2466: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2467: while (isspace((unsigned char)v[*pos]))
2468: (*pos)++;
1.79 schwarze 2469:
2470: if (NULL == res)
2471: continue;
1.77 schwarze 2472:
2473: switch (operator) {
1.80 schwarze 2474: case '+':
1.77 schwarze 2475: *res += operand2;
2476: break;
1.80 schwarze 2477: case '-':
1.77 schwarze 2478: *res -= operand2;
2479: break;
1.80 schwarze 2480: case '*':
1.77 schwarze 2481: *res *= operand2;
2482: break;
1.80 schwarze 2483: case '/':
1.116 schwarze 2484: if (operand2 == 0) {
1.106 schwarze 2485: mandoc_msg(MANDOCERR_DIVZERO,
2486: r->parse, ln, *pos, v);
2487: *res = 0;
2488: break;
2489: }
1.77 schwarze 2490: *res /= operand2;
2491: break;
1.80 schwarze 2492: case '%':
1.116 schwarze 2493: if (operand2 == 0) {
2494: mandoc_msg(MANDOCERR_DIVZERO,
2495: r->parse, ln, *pos, v);
2496: *res = 0;
2497: break;
2498: }
1.77 schwarze 2499: *res %= operand2;
2500: break;
1.80 schwarze 2501: case '<':
1.77 schwarze 2502: *res = *res < operand2;
2503: break;
1.80 schwarze 2504: case '>':
1.77 schwarze 2505: *res = *res > operand2;
2506: break;
1.80 schwarze 2507: case 'l':
1.77 schwarze 2508: *res = *res <= operand2;
2509: break;
1.80 schwarze 2510: case 'g':
1.77 schwarze 2511: *res = *res >= operand2;
2512: break;
1.80 schwarze 2513: case '=':
1.77 schwarze 2514: *res = *res == operand2;
2515: break;
1.80 schwarze 2516: case '!':
1.77 schwarze 2517: *res = *res != operand2;
2518: break;
1.80 schwarze 2519: case '&':
1.77 schwarze 2520: *res = *res && operand2;
2521: break;
1.80 schwarze 2522: case ':':
1.77 schwarze 2523: *res = *res || operand2;
2524: break;
1.80 schwarze 2525: case 'i':
1.77 schwarze 2526: if (operand2 < *res)
2527: *res = operand2;
2528: break;
1.80 schwarze 2529: case 'a':
1.77 schwarze 2530: if (operand2 > *res)
2531: *res = operand2;
2532: break;
2533: default:
2534: abort();
2535: }
2536: }
2537: return(1);
2538: }
2539:
1.138 schwarze 2540: /* --- register management ------------------------------------------------ */
2541:
1.52 schwarze 2542: void
1.60 schwarze 2543: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.41 schwarze 2544: {
1.52 schwarze 2545: struct roffreg *reg;
2546:
2547: /* Search for an existing register with the same name. */
2548: reg = r->regtab;
2549:
2550: while (reg && strcmp(name, reg->key.p))
2551: reg = reg->next;
1.41 schwarze 2552:
1.52 schwarze 2553: if (NULL == reg) {
2554: /* Create a new register. */
2555: reg = mandoc_malloc(sizeof(struct roffreg));
2556: reg->key.p = mandoc_strdup(name);
2557: reg->key.sz = strlen(name);
1.60 schwarze 2558: reg->val = 0;
1.52 schwarze 2559: reg->next = r->regtab;
2560: r->regtab = reg;
2561: }
2562:
1.60 schwarze 2563: if ('+' == sign)
2564: reg->val += val;
2565: else if ('-' == sign)
2566: reg->val -= val;
2567: else
2568: reg->val = val;
1.41 schwarze 2569: }
2570:
1.65 schwarze 2571: /*
2572: * Handle some predefined read-only number registers.
2573: * For now, return -1 if the requested register is not predefined;
2574: * in case a predefined read-only register having the value -1
2575: * were to turn up, another special value would have to be chosen.
2576: */
2577: static int
1.145 schwarze 2578: roff_getregro(const struct roff *r, const char *name)
1.65 schwarze 2579: {
2580:
2581: switch (*name) {
1.145 schwarze 2582: case '$': /* Number of arguments of the last macro evaluated. */
2583: return(r->argc);
1.80 schwarze 2584: case 'A': /* ASCII approximation mode is always off. */
1.65 schwarze 2585: return(0);
1.80 schwarze 2586: case 'g': /* Groff compatibility mode is always on. */
1.65 schwarze 2587: return(1);
1.80 schwarze 2588: case 'H': /* Fixed horizontal resolution. */
1.65 schwarze 2589: return (24);
1.80 schwarze 2590: case 'j': /* Always adjust left margin only. */
1.65 schwarze 2591: return(0);
1.80 schwarze 2592: case 'T': /* Some output device is always defined. */
1.65 schwarze 2593: return(1);
1.80 schwarze 2594: case 'V': /* Fixed vertical resolution. */
1.65 schwarze 2595: return (40);
2596: default:
2597: return (-1);
2598: }
2599: }
2600:
1.53 schwarze 2601: int
1.52 schwarze 2602: roff_getreg(const struct roff *r, const char *name)
1.41 schwarze 2603: {
1.52 schwarze 2604: struct roffreg *reg;
1.65 schwarze 2605: int val;
2606:
2607: if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) {
1.145 schwarze 2608: val = roff_getregro(r, name + 1);
1.65 schwarze 2609: if (-1 != val)
2610: return (val);
2611: }
1.52 schwarze 2612:
2613: for (reg = r->regtab; reg; reg = reg->next)
2614: if (0 == strcmp(name, reg->key.p))
1.53 schwarze 2615: return(reg->val);
2616:
2617: return(0);
2618: }
2619:
2620: static int
2621: roff_getregn(const struct roff *r, const char *name, size_t len)
2622: {
2623: struct roffreg *reg;
1.65 schwarze 2624: int val;
2625:
2626: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2627: val = roff_getregro(r, name + 1);
1.65 schwarze 2628: if (-1 != val)
2629: return (val);
2630: }
1.53 schwarze 2631:
2632: for (reg = r->regtab; reg; reg = reg->next)
2633: if (len == reg->key.sz &&
2634: 0 == strncmp(name, reg->key.p, len))
2635: return(reg->val);
1.143 schwarze 2636:
2637: return(0);
2638: }
2639:
2640: static int
2641: roff_hasregn(const struct roff *r, const char *name, size_t len)
2642: {
2643: struct roffreg *reg;
2644: int val;
2645:
2646: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2647: val = roff_getregro(r, name + 1);
1.143 schwarze 2648: if (-1 != val)
2649: return(1);
2650: }
2651:
2652: for (reg = r->regtab; reg; reg = reg->next)
2653: if (len == reg->key.sz &&
2654: 0 == strncmp(name, reg->key.p, len))
2655: return(1);
1.41 schwarze 2656:
1.52 schwarze 2657: return(0);
1.41 schwarze 2658: }
2659:
1.52 schwarze 2660: static void
2661: roff_freereg(struct roffreg *reg)
1.41 schwarze 2662: {
1.52 schwarze 2663: struct roffreg *old_reg;
1.41 schwarze 2664:
1.52 schwarze 2665: while (NULL != reg) {
2666: free(reg->key.p);
2667: old_reg = reg;
2668: reg = reg->next;
2669: free(old_reg);
2670: }
1.41 schwarze 2671: }
1.7 schwarze 2672:
2673: static enum rofferr
1.6 schwarze 2674: roff_nr(ROFF_ARGS)
1.1 schwarze 2675: {
1.85 schwarze 2676: char *key, *val;
2677: size_t keysz;
1.37 schwarze 2678: int iv;
1.60 schwarze 2679: char sign;
1.6 schwarze 2680:
1.110 schwarze 2681: key = val = buf->buf + pos;
2682: if (*key == '\0')
1.85 schwarze 2683: return(ROFF_IGN);
2684:
2685: keysz = roff_getname(r, &val, ln, pos);
1.110 schwarze 2686: if (key[keysz] == '\\')
1.85 schwarze 2687: return(ROFF_IGN);
2688: key[keysz] = '\0';
1.6 schwarze 2689:
1.60 schwarze 2690: sign = *val;
1.110 schwarze 2691: if (sign == '+' || sign == '-')
1.60 schwarze 2692: val++;
2693:
1.133 schwarze 2694: if (roff_evalnum(r, ln, val, NULL, &iv, ROFFNUM_SCALE))
1.77 schwarze 2695: roff_setreg(r, key, iv, sign);
1.1 schwarze 2696:
1.76 schwarze 2697: return(ROFF_IGN);
2698: }
2699:
2700: static enum rofferr
2701: roff_rr(ROFF_ARGS)
2702: {
2703: struct roffreg *reg, **prev;
1.85 schwarze 2704: char *name, *cp;
2705: size_t namesz;
1.76 schwarze 2706:
1.110 schwarze 2707: name = cp = buf->buf + pos;
2708: if (*name == '\0')
1.85 schwarze 2709: return(ROFF_IGN);
2710: namesz = roff_getname(r, &cp, ln, pos);
2711: name[namesz] = '\0';
1.76 schwarze 2712:
2713: prev = &r->regtab;
2714: while (1) {
2715: reg = *prev;
1.110 schwarze 2716: if (reg == NULL || !strcmp(name, reg->key.p))
1.76 schwarze 2717: break;
2718: prev = ®->next;
2719: }
1.110 schwarze 2720: if (reg != NULL) {
1.76 schwarze 2721: *prev = reg->next;
2722: free(reg->key.p);
2723: free(reg);
2724: }
1.29 schwarze 2725: return(ROFF_IGN);
2726: }
2727:
1.138 schwarze 2728: /* --- handler functions for roff requests -------------------------------- */
2729:
1.29 schwarze 2730: static enum rofferr
2731: roff_rm(ROFF_ARGS)
2732: {
2733: const char *name;
2734: char *cp;
1.85 schwarze 2735: size_t namesz;
1.29 schwarze 2736:
1.110 schwarze 2737: cp = buf->buf + pos;
2738: while (*cp != '\0') {
1.85 schwarze 2739: name = cp;
1.110 schwarze 2740: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.85 schwarze 2741: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.110 schwarze 2742: if (name[namesz] == '\\')
1.85 schwarze 2743: break;
1.29 schwarze 2744: }
1.51 schwarze 2745: return(ROFF_IGN);
2746: }
2747:
2748: static enum rofferr
2749: roff_it(ROFF_ARGS)
2750: {
2751: int iv;
2752:
2753: /* Parse the number of lines. */
1.133 schwarze 2754:
2755: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.95 schwarze 2756: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.110 schwarze 2757: ln, ppos, buf->buf + 1);
1.51 schwarze 2758: return(ROFF_IGN);
2759: }
2760:
1.134 schwarze 2761: while (isspace((unsigned char)buf->buf[pos]))
2762: pos++;
2763:
2764: /*
2765: * Arm the input line trap.
2766: * Special-casing "an-trap" is an ugly workaround to cope
2767: * with DocBook stupidly fiddling with man(7) internals.
2768: */
1.133 schwarze 2769:
1.51 schwarze 2770: roffit_lines = iv;
1.134 schwarze 2771: roffit_macro = mandoc_strdup(iv != 1 ||
2772: strcmp(buf->buf + pos, "an-trap") ?
2773: buf->buf + pos : "br");
1.2 schwarze 2774: return(ROFF_IGN);
1.47 schwarze 2775: }
2776:
2777: static enum rofferr
2778: roff_Dd(ROFF_ARGS)
2779: {
2780: const char *const *cp;
2781:
1.99 schwarze 2782: if ((r->options & (MPARSE_MDOC | MPARSE_QUICK)) == 0)
1.47 schwarze 2783: for (cp = __mdoc_reserved; *cp; cp++)
2784: roff_setstr(r, *cp, NULL, 0);
2785:
1.99 schwarze 2786: if (r->format == 0)
2787: r->format = MPARSE_MDOC;
2788:
1.47 schwarze 2789: return(ROFF_CONT);
2790: }
2791:
2792: static enum rofferr
2793: roff_TH(ROFF_ARGS)
2794: {
2795: const char *const *cp;
2796:
1.99 schwarze 2797: if ((r->options & MPARSE_QUICK) == 0)
1.47 schwarze 2798: for (cp = __man_reserved; *cp; cp++)
2799: roff_setstr(r, *cp, NULL, 0);
2800:
1.99 schwarze 2801: if (r->format == 0)
2802: r->format = MPARSE_MAN;
2803:
1.47 schwarze 2804: return(ROFF_CONT);
1.14 schwarze 2805: }
2806:
2807: static enum rofferr
1.27 schwarze 2808: roff_TE(ROFF_ARGS)
2809: {
2810:
2811: if (NULL == r->tbl)
1.94 schwarze 2812: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2813: ln, ppos, "TE");
1.130 schwarze 2814: else if ( ! tbl_end(&r->tbl)) {
2815: free(buf->buf);
2816: buf->buf = mandoc_strdup(".sp");
2817: buf->sz = 4;
2818: return(ROFF_REPARSE);
2819: }
1.27 schwarze 2820: return(ROFF_IGN);
2821: }
2822:
2823: static enum rofferr
2824: roff_T_(ROFF_ARGS)
2825: {
2826:
2827: if (NULL == r->tbl)
1.94 schwarze 2828: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2829: ln, ppos, "T&");
1.27 schwarze 2830: else
2831: tbl_restart(ppos, ln, r->tbl);
2832:
2833: return(ROFF_IGN);
2834: }
2835:
1.102 schwarze 2836: /*
2837: * Handle in-line equation delimiters.
2838: */
2839: static enum rofferr
1.110 schwarze 2840: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.41 schwarze 2841: {
1.105 schwarze 2842: char *cp1, *cp2;
2843: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.41 schwarze 2844:
1.102 schwarze 2845: /*
2846: * Outside equations, look for an opening delimiter.
2847: * If we are inside an equation, we already know it is
2848: * in-line, or this function wouldn't have been called;
2849: * so look for a closing delimiter.
2850: */
2851:
1.110 schwarze 2852: cp1 = buf->buf + pos;
1.102 schwarze 2853: cp2 = strchr(cp1, r->eqn == NULL ?
2854: r->last_eqn->odelim : r->last_eqn->cdelim);
2855: if (cp2 == NULL)
2856: return(ROFF_CONT);
2857:
1.105 schwarze 2858: *cp2++ = '\0';
2859: bef_pr = bef_nl = aft_nl = aft_pr = "";
2860:
2861: /* Handle preceding text, protecting whitespace. */
2862:
1.110 schwarze 2863: if (*buf->buf != '\0') {
1.105 schwarze 2864: if (r->eqn == NULL)
2865: bef_pr = "\\&";
2866: bef_nl = "\n";
2867: }
2868:
2869: /*
2870: * Prepare replacing the delimiter with an equation macro
2871: * and drop leading white space from the equation.
2872: */
1.102 schwarze 2873:
1.105 schwarze 2874: if (r->eqn == NULL) {
2875: while (*cp2 == ' ')
2876: cp2++;
2877: mac = ".EQ";
2878: } else
2879: mac = ".EN";
2880:
2881: /* Handle following text, protecting whitespace. */
2882:
2883: if (*cp2 != '\0') {
2884: aft_nl = "\n";
2885: if (r->eqn != NULL)
2886: aft_pr = "\\&";
2887: }
2888:
2889: /* Do the actual replacement. */
2890:
1.110 schwarze 2891: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.105 schwarze 2892: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.110 schwarze 2893: free(buf->buf);
2894: buf->buf = cp1;
1.102 schwarze 2895:
2896: /* Toggle the in-line state of the eqn subsystem. */
2897:
2898: r->eqn_inline = r->eqn == NULL;
2899: return(ROFF_REPARSE);
1.41 schwarze 2900: }
2901:
1.107 schwarze 2902: static enum rofferr
2903: roff_EQ(ROFF_ARGS)
1.32 schwarze 2904: {
1.41 schwarze 2905: struct eqn_node *e;
1.32 schwarze 2906:
1.110 schwarze 2907: assert(r->eqn == NULL);
1.107 schwarze 2908: e = eqn_alloc(ppos, ln, r->parse);
1.32 schwarze 2909:
1.102 schwarze 2910: if (r->last_eqn) {
1.32 schwarze 2911: r->last_eqn->next = e;
1.102 schwarze 2912: e->delim = r->last_eqn->delim;
2913: e->odelim = r->last_eqn->odelim;
2914: e->cdelim = r->last_eqn->cdelim;
2915: } else
1.32 schwarze 2916: r->first_eqn = r->last_eqn = e;
2917:
2918: r->eqn = r->last_eqn = e;
1.41 schwarze 2919:
1.110 schwarze 2920: if (buf->buf[pos] != '\0')
1.107 schwarze 2921: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 2922: ".EQ %s", buf->buf + pos);
1.41 schwarze 2923:
1.32 schwarze 2924: return(ROFF_IGN);
2925: }
2926:
2927: static enum rofferr
2928: roff_EN(ROFF_ARGS)
2929: {
2930:
1.94 schwarze 2931: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
1.32 schwarze 2932: return(ROFF_IGN);
2933: }
2934:
2935: static enum rofferr
1.27 schwarze 2936: roff_TS(ROFF_ARGS)
2937: {
1.49 schwarze 2938: struct tbl_node *tbl;
1.27 schwarze 2939:
2940: if (r->tbl) {
1.94 schwarze 2941: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
2942: ln, ppos, "TS breaks TS");
1.41 schwarze 2943: tbl_end(&r->tbl);
1.27 schwarze 2944: }
2945:
1.49 schwarze 2946: tbl = tbl_alloc(ppos, ln, r->parse);
1.27 schwarze 2947:
2948: if (r->last_tbl)
1.49 schwarze 2949: r->last_tbl->next = tbl;
1.27 schwarze 2950: else
1.49 schwarze 2951: r->first_tbl = r->last_tbl = tbl;
1.27 schwarze 2952:
1.49 schwarze 2953: r->tbl = r->last_tbl = tbl;
1.27 schwarze 2954: return(ROFF_IGN);
1.123 schwarze 2955: }
2956:
2957: static enum rofferr
2958: roff_brp(ROFF_ARGS)
2959: {
2960:
2961: buf->buf[pos - 1] = '\0';
2962: return(ROFF_CONT);
1.27 schwarze 2963: }
2964:
2965: static enum rofferr
1.48 schwarze 2966: roff_cc(ROFF_ARGS)
2967: {
2968: const char *p;
2969:
1.110 schwarze 2970: p = buf->buf + pos;
1.48 schwarze 2971:
1.110 schwarze 2972: if (*p == '\0' || (r->control = *p++) == '.')
1.48 schwarze 2973: r->control = 0;
2974:
1.110 schwarze 2975: if (*p != '\0')
1.132 schwarze 2976: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
2977: ln, p - buf->buf, "cc ... %s", p);
1.48 schwarze 2978:
2979: return(ROFF_IGN);
2980: }
2981:
2982: static enum rofferr
1.42 schwarze 2983: roff_tr(ROFF_ARGS)
2984: {
2985: const char *p, *first, *second;
2986: size_t fsz, ssz;
2987: enum mandoc_esc esc;
2988:
1.110 schwarze 2989: p = buf->buf + pos;
1.42 schwarze 2990:
1.110 schwarze 2991: if (*p == '\0') {
1.132 schwarze 2992: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.42 schwarze 2993: return(ROFF_IGN);
2994: }
2995:
1.110 schwarze 2996: while (*p != '\0') {
1.42 schwarze 2997: fsz = ssz = 1;
2998:
2999: first = p++;
1.110 schwarze 3000: if (*first == '\\') {
1.42 schwarze 3001: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3002: if (esc == ESCAPE_ERROR) {
1.92 schwarze 3003: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 3004: ln, (int)(p - buf->buf), first);
1.42 schwarze 3005: return(ROFF_IGN);
3006: }
3007: fsz = (size_t)(p - first);
3008: }
3009:
3010: second = p++;
1.110 schwarze 3011: if (*second == '\\') {
1.42 schwarze 3012: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3013: if (esc == ESCAPE_ERROR) {
1.92 schwarze 3014: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 3015: ln, (int)(p - buf->buf), second);
1.42 schwarze 3016: return(ROFF_IGN);
3017: }
3018: ssz = (size_t)(p - second);
1.110 schwarze 3019: } else if (*second == '\0') {
1.132 schwarze 3020: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
3021: ln, first - buf->buf, "tr %s", first);
1.42 schwarze 3022: second = " ";
3023: p--;
3024: }
3025:
3026: if (fsz > 1) {
1.80 schwarze 3027: roff_setstrn(&r->xmbtab, first, fsz,
3028: second, ssz, 0);
1.42 schwarze 3029: continue;
3030: }
3031:
1.110 schwarze 3032: if (r->xtab == NULL)
1.80 schwarze 3033: r->xtab = mandoc_calloc(128,
3034: sizeof(struct roffstr));
1.42 schwarze 3035:
3036: free(r->xtab[(int)*first].p);
3037: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3038: r->xtab[(int)*first].sz = ssz;
3039: }
3040:
3041: return(ROFF_IGN);
3042: }
3043:
3044: static enum rofferr
1.14 schwarze 3045: roff_so(ROFF_ARGS)
3046: {
1.121 schwarze 3047: char *name, *cp;
1.15 schwarze 3048:
1.110 schwarze 3049: name = buf->buf + pos;
1.97 schwarze 3050: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.14 schwarze 3051:
1.22 schwarze 3052: /*
3053: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3054: * opening anything that's not in our cwd or anything beneath
3055: * it. Thus, explicitly disallow traversing up the file-system
3056: * or using absolute paths.
3057: */
3058:
1.110 schwarze 3059: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.83 schwarze 3060: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
3061: ".so %s", name);
1.121 schwarze 3062: buf->sz = mandoc_asprintf(&cp,
3063: ".sp\nSee the file %s.\n.sp", name) + 1;
3064: free(buf->buf);
3065: buf->buf = cp;
3066: *offs = 0;
3067: return(ROFF_REPARSE);
1.14 schwarze 3068: }
3069:
3070: *offs = pos;
3071: return(ROFF_SO);
1.7 schwarze 3072: }
3073:
1.138 schwarze 3074: /* --- user defined strings and macros ------------------------------------ */
3075:
1.16 schwarze 3076: static enum rofferr
3077: roff_userdef(ROFF_ARGS)
1.12 schwarze 3078: {
1.135 schwarze 3079: const char *arg[9], *ap;
1.16 schwarze 3080: char *cp, *n1, *n2;
1.146 schwarze 3081: int i, ib, ie;
1.135 schwarze 3082: size_t asz, rsz;
1.12 schwarze 3083:
1.16 schwarze 3084: /*
3085: * Collect pointers to macro argument strings
1.61 schwarze 3086: * and NUL-terminate them.
1.16 schwarze 3087: */
1.135 schwarze 3088:
1.145 schwarze 3089: r->argc = 0;
1.110 schwarze 3090: cp = buf->buf + pos;
1.145 schwarze 3091: for (i = 0; i < 9; i++) {
3092: if (*cp == '\0')
3093: arg[i] = "";
3094: else {
3095: arg[i] = mandoc_getarg(r->parse, &cp, ln, &pos);
3096: r->argc = i + 1;
3097: }
3098: }
1.16 schwarze 3099:
3100: /*
3101: * Expand macro arguments.
1.12 schwarze 3102: */
1.135 schwarze 3103:
3104: buf->sz = strlen(r->current_string) + 1;
3105: n1 = cp = mandoc_malloc(buf->sz);
3106: memcpy(n1, r->current_string, buf->sz);
3107: while (*cp != '\0') {
3108:
3109: /* Scan ahead for the next argument invocation. */
3110:
3111: if (*cp++ != '\\')
3112: continue;
3113: if (*cp++ != '$')
3114: continue;
1.146 schwarze 3115: if (*cp == '*') { /* \\$* inserts all arguments */
3116: ib = 0;
3117: ie = r->argc - 1;
3118: } else { /* \\$1 .. \\$9 insert one argument */
3119: ib = ie = *cp - '1';
3120: if (ib < 0 || ib > 8)
3121: continue;
3122: }
1.135 schwarze 3123: cp -= 2;
3124:
3125: /*
3126: * Determine the size of the expanded argument,
3127: * taking escaping of quotes into account.
3128: */
3129:
1.146 schwarze 3130: asz = ie > ib ? ie - ib : 0; /* for blanks */
3131: for (i = ib; i <= ie; i++) {
3132: for (ap = arg[i]; *ap != '\0'; ap++) {
3133: asz++;
3134: if (*ap == '"')
3135: asz += 3;
3136: }
1.135 schwarze 3137: }
3138: if (asz != 3) {
3139:
3140: /*
3141: * Determine the size of the rest of the
3142: * unexpanded macro, including the NUL.
3143: */
3144:
3145: rsz = buf->sz - (cp - n1) - 3;
3146:
3147: /*
3148: * When shrinking, move before
3149: * releasing the storage.
3150: */
3151:
3152: if (asz < 3)
3153: memmove(cp + asz, cp + 3, rsz);
3154:
3155: /*
3156: * Resize the storage for the macro
3157: * and readjust the parse pointer.
3158: */
3159:
3160: buf->sz += asz - 3;
3161: n2 = mandoc_realloc(n1, buf->sz);
3162: cp = n2 + (cp - n1);
3163: n1 = n2;
3164:
3165: /*
3166: * When growing, make room
3167: * for the expanded argument.
3168: */
3169:
3170: if (asz > 3)
3171: memmove(cp + asz, cp + 3, rsz);
3172: }
3173:
3174: /* Copy the expanded argument, escaping quotes. */
3175:
3176: n2 = cp;
1.146 schwarze 3177: for (i = ib; i <= ie; i++) {
3178: for (ap = arg[i]; *ap != '\0'; ap++) {
3179: if (*ap == '"') {
3180: memcpy(n2, "\\(dq", 4);
3181: n2 += 4;
3182: } else
3183: *n2++ = *ap;
3184: }
3185: if (i < ie)
3186: *n2++ = ' ';
1.16 schwarze 3187: }
1.12 schwarze 3188: }
3189:
1.16 schwarze 3190: /*
3191: * Replace the macro invocation
3192: * by the expanded macro.
3193: */
1.135 schwarze 3194:
1.110 schwarze 3195: free(buf->buf);
3196: buf->buf = n1;
1.120 schwarze 3197: *offs = 0;
1.16 schwarze 3198:
1.110 schwarze 3199: return(buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
1.16 schwarze 3200: ROFF_REPARSE : ROFF_APPEND);
1.12 schwarze 3201: }
1.28 schwarze 3202:
1.85 schwarze 3203: static size_t
1.28 schwarze 3204: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3205: {
3206: char *name, *cp;
1.85 schwarze 3207: size_t namesz;
1.28 schwarze 3208:
3209: name = *cpp;
3210: if ('\0' == *name)
1.85 schwarze 3211: return(0);
1.28 schwarze 3212:
1.85 schwarze 3213: /* Read until end of name and terminate it with NUL. */
3214: for (cp = name; 1; cp++) {
3215: if ('\0' == *cp || ' ' == *cp) {
3216: namesz = cp - name;
3217: break;
3218: }
1.28 schwarze 3219: if ('\\' != *cp)
3220: continue;
1.88 schwarze 3221: namesz = cp - name;
3222: if ('{' == cp[1] || '}' == cp[1])
3223: break;
1.28 schwarze 3224: cp++;
3225: if ('\\' == *cp)
3226: continue;
1.97 schwarze 3227: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3228: "%.*s", (int)(cp - name + 1), name);
1.85 schwarze 3229: mandoc_escape((const char **)&cp, NULL, NULL);
3230: break;
1.28 schwarze 3231: }
3232:
3233: /* Read past spaces. */
3234: while (' ' == *cp)
3235: cp++;
3236:
3237: *cpp = cp;
1.85 schwarze 3238: return(namesz);
1.28 schwarze 3239: }
3240:
1.16 schwarze 3241: /*
3242: * Store *string into the user-defined string called *name.
3243: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.66 schwarze 3244: * append == 0: replace mode
3245: * append == 1: single-line append mode
3246: * append == 2: multiline append mode, append '\n' after each call
1.16 schwarze 3247: */
1.8 schwarze 3248: static void
1.16 schwarze 3249: roff_setstr(struct roff *r, const char *name, const char *string,
1.66 schwarze 3250: int append)
1.7 schwarze 3251: {
1.42 schwarze 3252:
3253: roff_setstrn(&r->strtab, name, strlen(name), string,
1.80 schwarze 3254: string ? strlen(string) : 0, append);
1.42 schwarze 3255: }
3256:
3257: static void
3258: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.66 schwarze 3259: const char *string, size_t stringsz, int append)
1.42 schwarze 3260: {
3261: struct roffkv *n;
3262: char *c;
3263: int i;
3264: size_t oldch, newch;
1.7 schwarze 3265:
1.16 schwarze 3266: /* Search for an existing string with the same name. */
1.42 schwarze 3267: n = *r;
3268:
1.84 schwarze 3269: while (n && (namesz != n->key.sz ||
3270: strncmp(n->key.p, name, namesz)))
1.7 schwarze 3271: n = n->next;
1.8 schwarze 3272:
3273: if (NULL == n) {
1.16 schwarze 3274: /* Create a new string table entry. */
1.42 schwarze 3275: n = mandoc_malloc(sizeof(struct roffkv));
3276: n->key.p = mandoc_strndup(name, namesz);
3277: n->key.sz = namesz;
3278: n->val.p = NULL;
3279: n->val.sz = 0;
3280: n->next = *r;
3281: *r = n;
1.66 schwarze 3282: } else if (0 == append) {
1.42 schwarze 3283: free(n->val.p);
3284: n->val.p = NULL;
3285: n->val.sz = 0;
1.16 schwarze 3286: }
3287:
3288: if (NULL == string)
3289: return;
3290:
3291: /*
3292: * One additional byte for the '\n' in multiline mode,
3293: * and one for the terminating '\0'.
3294: */
1.66 schwarze 3295: newch = stringsz + (1 < append ? 2u : 1u);
1.42 schwarze 3296:
3297: if (NULL == n->val.p) {
3298: n->val.p = mandoc_malloc(newch);
3299: *n->val.p = '\0';
1.16 schwarze 3300: oldch = 0;
3301: } else {
1.42 schwarze 3302: oldch = n->val.sz;
3303: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.16 schwarze 3304: }
3305:
3306: /* Skip existing content in the destination buffer. */
1.42 schwarze 3307: c = n->val.p + (int)oldch;
1.16 schwarze 3308:
3309: /* Append new content to the destination buffer. */
1.42 schwarze 3310: i = 0;
3311: while (i < (int)stringsz) {
1.16 schwarze 3312: /*
3313: * Rudimentary roff copy mode:
3314: * Handle escaped backslashes.
3315: */
1.42 schwarze 3316: if ('\\' == string[i] && '\\' == string[i + 1])
3317: i++;
3318: *c++ = string[i++];
1.16 schwarze 3319: }
1.8 schwarze 3320:
1.16 schwarze 3321: /* Append terminating bytes. */
1.66 schwarze 3322: if (1 < append)
1.16 schwarze 3323: *c++ = '\n';
1.42 schwarze 3324:
1.16 schwarze 3325: *c = '\0';
1.42 schwarze 3326: n->val.sz = (int)(c - n->val.p);
1.7 schwarze 3327: }
3328:
1.8 schwarze 3329: static const char *
3330: roff_getstrn(const struct roff *r, const char *name, size_t len)
1.7 schwarze 3331: {
1.42 schwarze 3332: const struct roffkv *n;
1.64 schwarze 3333: int i;
1.7 schwarze 3334:
1.42 schwarze 3335: for (n = r->strtab; n; n = n->next)
1.80 schwarze 3336: if (0 == strncmp(name, n->key.p, len) &&
3337: '\0' == n->key.p[(int)len])
1.42 schwarze 3338: return(n->val.p);
1.64 schwarze 3339:
3340: for (i = 0; i < PREDEFS_MAX; i++)
3341: if (0 == strncmp(name, predefs[i].name, len) &&
3342: '\0' == predefs[i].name[(int)len])
3343: return(predefs[i].str);
1.8 schwarze 3344:
1.42 schwarze 3345: return(NULL);
1.7 schwarze 3346: }
3347:
1.8 schwarze 3348: static void
1.42 schwarze 3349: roff_freestr(struct roffkv *r)
1.7 schwarze 3350: {
1.42 schwarze 3351: struct roffkv *n, *nn;
1.7 schwarze 3352:
1.42 schwarze 3353: for (n = r; n; n = nn) {
3354: free(n->key.p);
3355: free(n->val.p);
1.7 schwarze 3356: nn = n->next;
3357: free(n);
3358: }
1.27 schwarze 3359: }
1.138 schwarze 3360:
3361: /* --- accessors and utility functions ------------------------------------ */
1.27 schwarze 3362:
3363: const struct tbl_span *
3364: roff_span(const struct roff *r)
3365: {
1.80 schwarze 3366:
1.27 schwarze 3367: return(r->tbl ? tbl_span(r->tbl) : NULL);
1.32 schwarze 3368: }
3369:
3370: const struct eqn *
3371: roff_eqn(const struct roff *r)
3372: {
1.80 schwarze 3373:
1.32 schwarze 3374: return(r->last_eqn ? &r->last_eqn->eqn : NULL);
1.42 schwarze 3375: }
3376:
3377: /*
3378: * Duplicate an input string, making the appropriate character
3379: * conversations (as stipulated by `tr') along the way.
3380: * Returns a heap-allocated string with all the replacements made.
3381: */
3382: char *
3383: roff_strdup(const struct roff *r, const char *p)
3384: {
3385: const struct roffkv *cp;
3386: char *res;
3387: const char *pp;
3388: size_t ssz, sz;
3389: enum mandoc_esc esc;
3390:
3391: if (NULL == r->xmbtab && NULL == r->xtab)
3392: return(mandoc_strdup(p));
3393: else if ('\0' == *p)
3394: return(mandoc_strdup(""));
3395:
3396: /*
3397: * Step through each character looking for term matches
3398: * (remember that a `tr' can be invoked with an escape, which is
3399: * a glyph but the escape is multi-character).
3400: * We only do this if the character hash has been initialised
3401: * and the string is >0 length.
3402: */
3403:
3404: res = NULL;
3405: ssz = 0;
3406:
3407: while ('\0' != *p) {
3408: if ('\\' != *p && r->xtab && r->xtab[(int)*p].p) {
3409: sz = r->xtab[(int)*p].sz;
3410: res = mandoc_realloc(res, ssz + sz + 1);
3411: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3412: ssz += sz;
3413: p++;
3414: continue;
3415: } else if ('\\' != *p) {
3416: res = mandoc_realloc(res, ssz + 2);
3417: res[ssz++] = *p++;
3418: continue;
3419: }
3420:
3421: /* Search for term matches. */
3422: for (cp = r->xmbtab; cp; cp = cp->next)
3423: if (0 == strncmp(p, cp->key.p, cp->key.sz))
3424: break;
3425:
3426: if (NULL != cp) {
3427: /*
3428: * A match has been found.
3429: * Append the match to the array and move
3430: * forward by its keysize.
3431: */
1.80 schwarze 3432: res = mandoc_realloc(res,
3433: ssz + cp->val.sz + 1);
1.42 schwarze 3434: memcpy(res + ssz, cp->val.p, cp->val.sz);
3435: ssz += cp->val.sz;
3436: p += (int)cp->key.sz;
3437: continue;
3438: }
3439:
3440: /*
3441: * Handle escapes carefully: we need to copy
3442: * over just the escape itself, or else we might
3443: * do replacements within the escape itself.
3444: * Make sure to pass along the bogus string.
3445: */
3446: pp = p++;
3447: esc = mandoc_escape(&p, NULL, NULL);
3448: if (ESCAPE_ERROR == esc) {
3449: sz = strlen(pp);
3450: res = mandoc_realloc(res, ssz + sz + 1);
3451: memcpy(res + ssz, pp, sz);
3452: break;
3453: }
1.80 schwarze 3454: /*
3455: * We bail out on bad escapes.
1.42 schwarze 3456: * No need to warn: we already did so when
3457: * roff_res() was called.
3458: */
3459: sz = (int)(p - pp);
3460: res = mandoc_realloc(res, ssz + sz + 1);
3461: memcpy(res + ssz, pp, sz);
3462: ssz += sz;
3463: }
3464:
3465: res[(int)ssz] = '\0';
3466: return(res);
1.99 schwarze 3467: }
3468:
3469: int
3470: roff_getformat(const struct roff *r)
3471: {
3472:
3473: return(r->format);
1.48 schwarze 3474: }
3475:
3476: /*
1.80 schwarze 3477: * Find out whether a line is a macro line or not.
1.48 schwarze 3478: * If it is, adjust the current position and return one; if it isn't,
3479: * return zero and don't change the current position.
3480: * If the control character has been set with `.cc', then let that grain
3481: * precedence.
3482: * This is slighly contrary to groff, where using the non-breaking
3483: * control character when `cc' has been invoked will cause the
3484: * non-breaking macro contents to be printed verbatim.
3485: */
3486: int
3487: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
3488: {
3489: int pos;
3490:
3491: pos = *ppos;
3492:
3493: if (0 != r->control && cp[pos] == r->control)
3494: pos++;
3495: else if (0 != r->control)
3496: return(0);
3497: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
3498: pos += 2;
3499: else if ('.' == cp[pos] || '\'' == cp[pos])
3500: pos++;
3501: else
3502: return(0);
3503:
3504: while (' ' == cp[pos] || '\t' == cp[pos])
3505: pos++;
3506:
3507: *ppos = pos;
3508: return(1);
1.1 schwarze 3509: }