Annotation of src/usr.bin/mandoc/roff.c, Revision 1.147
1.147 ! schwarze 1: /* $OpenBSD: roff.c,v 1.146 2015/08/29 21:37:11 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: /* NOTREACHED */
1024: }
1025: n->parent->nchild++;
1.142 schwarze 1026: n->parent->last = n;
1.138 schwarze 1027:
1028: /*
1029: * Copy over the normalised-data pointer of our parent. Not
1030: * everybody has one, but copying a null pointer is fine.
1031: */
1032:
1033: switch (n->type) {
1034: case ROFFT_BODY:
1035: if (n->end != ENDBODY_NOT)
1036: break;
1037: /* FALLTHROUGH */
1038: case ROFFT_TAIL:
1039: /* FALLTHROUGH */
1040: case ROFFT_HEAD:
1041: n->norm = n->parent->norm;
1042: break;
1043: default:
1044: break;
1045: }
1046:
1047: if (man->macroset == MACROSET_MDOC)
1048: mdoc_valid_pre(man, n);
1049:
1050: switch (n->type) {
1051: case ROFFT_HEAD:
1052: assert(n->parent->type == ROFFT_BLOCK);
1053: n->parent->head = n;
1054: break;
1055: case ROFFT_BODY:
1056: if (n->end)
1057: break;
1058: assert(n->parent->type == ROFFT_BLOCK);
1059: n->parent->body = n;
1060: break;
1061: case ROFFT_TAIL:
1062: assert(n->parent->type == ROFFT_BLOCK);
1063: n->parent->tail = n;
1064: break;
1065: default:
1066: break;
1067: }
1068: man->last = n;
1069: }
1070:
1.139 schwarze 1071: void
1072: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
1073: {
1074: struct roff_node *n;
1075:
1076: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
1077: n->string = roff_strdup(man->roff, word);
1078: roff_node_append(man, n);
1079: if (man->macroset == MACROSET_MDOC)
1080: mdoc_valid_post(man);
1081: else
1082: man_valid_post(man);
1083: man->next = ROFF_NEXT_SIBLING;
1084: }
1085:
1086: void
1087: roff_word_append(struct roff_man *man, const char *word)
1088: {
1089: struct roff_node *n;
1090: char *addstr, *newstr;
1091:
1092: n = man->last;
1093: addstr = roff_strdup(man->roff, word);
1094: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
1095: free(addstr);
1096: free(n->string);
1097: n->string = newstr;
1098: man->next = ROFF_NEXT_SIBLING;
1.140 schwarze 1099: }
1100:
1101: void
1102: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
1103: {
1104: struct roff_node *n;
1105:
1106: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
1107: roff_node_append(man, n);
1108: man->next = ROFF_NEXT_CHILD;
1109: }
1110:
1111: struct roff_node *
1112: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
1113: {
1114: struct roff_node *n;
1115:
1116: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
1117: roff_node_append(man, n);
1118: man->next = ROFF_NEXT_CHILD;
1119: return(n);
1.139 schwarze 1120: }
1121:
1.138 schwarze 1122: struct roff_node *
1123: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
1124: {
1125: struct roff_node *n;
1126:
1127: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
1128: roff_node_append(man, n);
1129: man->next = ROFF_NEXT_CHILD;
1130: return(n);
1131: }
1132:
1133: struct roff_node *
1134: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1135: {
1136: struct roff_node *n;
1137:
1138: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1139: roff_node_append(man, n);
1140: man->next = ROFF_NEXT_CHILD;
1141: return(n);
1.139 schwarze 1142: }
1143:
1144: void
1145: roff_addeqn(struct roff_man *man, const struct eqn *eqn)
1146: {
1147: struct roff_node *n;
1148:
1149: n = roff_node_alloc(man, eqn->ln, eqn->pos, ROFFT_EQN, TOKEN_NONE);
1150: n->eqn = eqn;
1151: if (eqn->ln > man->last->line)
1152: n->flags |= MDOC_LINE;
1153: roff_node_append(man, n);
1154: man->next = ROFF_NEXT_SIBLING;
1155: }
1156:
1157: void
1158: roff_addtbl(struct roff_man *man, const struct tbl_span *tbl)
1159: {
1160: struct roff_node *n;
1161:
1162: if (man->macroset == MACROSET_MAN)
1163: man_breakscope(man, TOKEN_NONE);
1164: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
1165: n->span = tbl;
1166: roff_node_append(man, n);
1167: if (man->macroset == MACROSET_MDOC)
1168: mdoc_valid_post(man);
1169: else
1170: man_valid_post(man);
1171: man->next = ROFF_NEXT_SIBLING;
1.138 schwarze 1172: }
1173:
1174: void
1175: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1176: {
1177:
1178: /* Adjust siblings. */
1179:
1180: if (n->prev)
1181: n->prev->next = n->next;
1182: if (n->next)
1183: n->next->prev = n->prev;
1184:
1185: /* Adjust parent. */
1186:
1187: if (n->parent != NULL) {
1188: n->parent->nchild--;
1189: if (n->parent->child == n)
1190: n->parent->child = n->next;
1191: if (n->parent->last == n)
1192: n->parent->last = n->prev;
1193: }
1194:
1195: /* Adjust parse point. */
1196:
1197: if (man == NULL)
1198: return;
1199: if (man->last == n) {
1200: if (n->prev == NULL) {
1201: man->last = n->parent;
1202: man->next = ROFF_NEXT_CHILD;
1203: } else {
1204: man->last = n->prev;
1205: man->next = ROFF_NEXT_SIBLING;
1206: }
1207: }
1208: if (man->first == n)
1209: man->first = NULL;
1210: }
1211:
1212: void
1213: roff_node_free(struct roff_node *n)
1214: {
1215:
1216: if (n->args != NULL)
1217: mdoc_argv_free(n->args);
1218: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1219: free(n->norm);
1220: free(n->string);
1221: free(n);
1222: }
1223:
1224: void
1225: roff_node_delete(struct roff_man *man, struct roff_node *n)
1226: {
1227:
1228: while (n->child != NULL)
1229: roff_node_delete(man, n->child);
1230: assert(n->nchild == 0);
1231: roff_node_unlink(man, n);
1232: roff_node_free(n);
1.141 schwarze 1233: }
1234:
1235: void
1236: deroff(char **dest, const struct roff_node *n)
1237: {
1238: char *cp;
1239: size_t sz;
1240:
1241: if (n->type != ROFFT_TEXT) {
1242: for (n = n->child; n != NULL; n = n->next)
1243: deroff(dest, n);
1244: return;
1245: }
1246:
1247: /* Skip leading whitespace and escape sequences. */
1248:
1249: cp = n->string;
1250: while (*cp != '\0') {
1251: if ('\\' == *cp) {
1252: cp++;
1253: mandoc_escape((const char **)&cp, NULL, NULL);
1254: } else if (isspace((unsigned char)*cp))
1255: cp++;
1256: else
1257: break;
1258: }
1259:
1260: /* Skip trailing whitespace. */
1261:
1262: for (sz = strlen(cp); sz; sz--)
1263: if ( ! isspace((unsigned char)cp[sz-1]))
1264: break;
1265:
1266: /* Skip empty strings. */
1267:
1268: if (sz == 0)
1269: return;
1270:
1271: if (*dest == NULL) {
1272: *dest = mandoc_strndup(cp, sz);
1273: return;
1274: }
1275:
1276: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1277: free(*dest);
1278: *dest = cp;
1.138 schwarze 1279: }
1280:
1281: /* --- main functions of the roff parser ---------------------------------- */
1282:
1.8 schwarze 1283: /*
1.79 schwarze 1284: * In the current line, expand escape sequences that tend to get
1285: * used in numerical expressions and conditional requests.
1286: * Also check the syntax of the remaining escape sequences.
1.8 schwarze 1287: */
1.45 schwarze 1288: static enum rofferr
1.110 schwarze 1289: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.8 schwarze 1290: {
1.81 schwarze 1291: char ubuf[24]; /* buffer to print the number */
1.78 schwarze 1292: const char *start; /* start of the string to process */
1.82 schwarze 1293: char *stesc; /* start of an escape sequence ('\\') */
1.23 schwarze 1294: const char *stnam; /* start of the name, after "[(*" */
1295: const char *cp; /* end of the name, e.g. before ']' */
1296: const char *res; /* the string to be substituted */
1.110 schwarze 1297: char *nbuf; /* new buffer to copy buf->buf to */
1.53 schwarze 1298: size_t maxl; /* expected length of the escape name */
1299: size_t naml; /* actual length of the escape name */
1.109 schwarze 1300: enum mandoc_esc esc; /* type of the escape sequence */
1301: int inaml; /* length returned from mandoc_escape() */
1.53 schwarze 1302: int expand_count; /* to avoid infinite loops */
1.79 schwarze 1303: int npos; /* position in numeric expression */
1.91 schwarze 1304: int arg_complete; /* argument not interrupted by eol */
1.79 schwarze 1305: char term; /* character terminating the escape */
1.8 schwarze 1306:
1.43 schwarze 1307: expand_count = 0;
1.110 schwarze 1308: start = buf->buf + pos;
1.78 schwarze 1309: stesc = strchr(start, '\0') - 1;
1310: while (stesc-- > start) {
1.43 schwarze 1311:
1.78 schwarze 1312: /* Search backwards for the next backslash. */
1313:
1.110 schwarze 1314: if (*stesc != '\\')
1.78 schwarze 1315: continue;
1316:
1317: /* If it is escaped, skip it. */
1318:
1319: for (cp = stesc - 1; cp >= start; cp--)
1.110 schwarze 1320: if (*cp != '\\')
1.78 schwarze 1321: break;
1322:
1.110 schwarze 1323: if ((stesc - cp) % 2 == 0) {
1.82 schwarze 1324: stesc = (char *)cp;
1.78 schwarze 1325: continue;
1326: }
1.23 schwarze 1327:
1.79 schwarze 1328: /* Decide whether to expand or to check only. */
1.23 schwarze 1329:
1.79 schwarze 1330: term = '\0';
1.78 schwarze 1331: cp = stesc + 1;
1.53 schwarze 1332: switch (*cp) {
1.80 schwarze 1333: case '*':
1.53 schwarze 1334: res = NULL;
1335: break;
1.80 schwarze 1336: case 'B':
1.79 schwarze 1337: /* FALLTHROUGH */
1.80 schwarze 1338: case 'w':
1.79 schwarze 1339: term = cp[1];
1340: /* FALLTHROUGH */
1.80 schwarze 1341: case 'n':
1.53 schwarze 1342: res = ubuf;
1343: break;
1344: default:
1.109 schwarze 1345: esc = mandoc_escape(&cp, &stnam, &inaml);
1346: if (esc == ESCAPE_ERROR ||
1347: (esc == ESCAPE_SPECIAL &&
1348: mchars_spec2cp(r->mchars, stnam, inaml) < 0))
1.92 schwarze 1349: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.110 schwarze 1350: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1351: "%.*s", (int)(cp - stesc), stesc);
1.78 schwarze 1352: continue;
1.42 schwarze 1353: }
1354:
1.78 schwarze 1355: if (EXPAND_LIMIT < ++expand_count) {
1356: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.110 schwarze 1357: ln, (int)(stesc - buf->buf), NULL);
1.78 schwarze 1358: return(ROFF_IGN);
1359: }
1.23 schwarze 1360:
1361: /*
1362: * The third character decides the length
1.53 schwarze 1363: * of the name of the string or register.
1.23 schwarze 1364: * Save a pointer to the name.
1365: */
1366:
1.110 schwarze 1367: if (term == '\0') {
1.79 schwarze 1368: switch (*++cp) {
1.80 schwarze 1369: case '\0':
1.79 schwarze 1370: maxl = 0;
1371: break;
1.80 schwarze 1372: case '(':
1.79 schwarze 1373: cp++;
1374: maxl = 2;
1375: break;
1.80 schwarze 1376: case '[':
1.79 schwarze 1377: cp++;
1378: term = ']';
1379: maxl = 0;
1380: break;
1381: default:
1382: maxl = 1;
1383: break;
1384: }
1385: } else {
1386: cp += 2;
1.8 schwarze 1387: maxl = 0;
1388: }
1.23 schwarze 1389: stnam = cp;
1.8 schwarze 1390:
1.23 schwarze 1391: /* Advance to the end of the name. */
1.8 schwarze 1392:
1.125 schwarze 1393: naml = 0;
1.91 schwarze 1394: arg_complete = 1;
1.125 schwarze 1395: while (maxl == 0 || naml < maxl) {
1.110 schwarze 1396: if (*cp == '\0') {
1.92 schwarze 1397: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 1398: ln, (int)(stesc - buf->buf), stesc);
1.91 schwarze 1399: arg_complete = 0;
1.79 schwarze 1400: break;
1.42 schwarze 1401: }
1.110 schwarze 1402: if (maxl == 0 && *cp == term) {
1.79 schwarze 1403: cp++;
1.125 schwarze 1404: break;
1405: }
1406: if (*cp++ != '\\' || stesc[1] != 'w') {
1407: naml++;
1408: continue;
1409: }
1410: switch (mandoc_escape(&cp, NULL, NULL)) {
1411: case ESCAPE_SPECIAL:
1412: /* FALLTHROUGH */
1413: case ESCAPE_UNICODE:
1414: /* FALLTHROUGH */
1415: case ESCAPE_NUMBERED:
1416: /* FALLTHROUGH */
1417: case ESCAPE_OVERSTRIKE:
1418: naml++;
1419: break;
1420: default:
1.8 schwarze 1421: break;
1.79 schwarze 1422: }
1.8 schwarze 1423: }
1424:
1.23 schwarze 1425: /*
1426: * Retrieve the replacement string; if it is
1427: * undefined, resume searching for escapes.
1428: */
1429:
1.79 schwarze 1430: switch (stesc[1]) {
1.80 schwarze 1431: case '*':
1.91 schwarze 1432: if (arg_complete)
1433: res = roff_getstrn(r, stnam, naml);
1.79 schwarze 1434: break;
1.80 schwarze 1435: case 'B':
1.79 schwarze 1436: npos = 0;
1.91 schwarze 1437: ubuf[0] = arg_complete &&
1.133 schwarze 1438: roff_evalnum(r, ln, stnam, &npos,
1439: NULL, ROFFNUM_SCALE) &&
1.91 schwarze 1440: stnam + npos + 1 == cp ? '1' : '0';
1.79 schwarze 1441: ubuf[1] = '\0';
1442: break;
1.80 schwarze 1443: case 'n':
1.91 schwarze 1444: if (arg_complete)
1445: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1446: roff_getregn(r, stnam, naml));
1447: else
1448: ubuf[0] = '\0';
1.79 schwarze 1449: break;
1.80 schwarze 1450: case 'w':
1.91 schwarze 1451: /* use even incomplete args */
1.81 schwarze 1452: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.79 schwarze 1453: 24 * (int)naml);
1454: break;
1455: }
1.8 schwarze 1456:
1.110 schwarze 1457: if (res == NULL) {
1.92 schwarze 1458: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1459: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1460: "%.*s", (int)naml, stnam);
1.37 schwarze 1461: res = "";
1.118 schwarze 1462: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1463: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1464: ln, (int)(stesc - buf->buf), NULL);
1465: return(ROFF_IGN);
1.8 schwarze 1466: }
1467:
1.23 schwarze 1468: /* Replace the escape sequence by the string. */
1469:
1.82 schwarze 1470: *stesc = '\0';
1.110 schwarze 1471: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1472: buf->buf, res, cp) + 1;
1.8 schwarze 1473:
1.78 schwarze 1474: /* Prepare for the next replacement. */
1.8 schwarze 1475:
1.78 schwarze 1476: start = nbuf + pos;
1.110 schwarze 1477: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1478: free(buf->buf);
1479: buf->buf = nbuf;
1.42 schwarze 1480: }
1.45 schwarze 1481: return(ROFF_CONT);
1.42 schwarze 1482: }
1483:
1484: /*
1.147 ! schwarze 1485: * Process text streams.
1.42 schwarze 1486: */
1487: static enum rofferr
1.110 schwarze 1488: roff_parsetext(struct buf *buf, int pos, int *offs)
1.42 schwarze 1489: {
1490: size_t sz;
1491: const char *start;
1.51 schwarze 1492: char *p;
1493: int isz;
1.42 schwarze 1494: enum mandoc_esc esc;
1495:
1.147 ! schwarze 1496: /* Spring the input line trap. */
! 1497:
! 1498: if (roffit_lines == 1) {
! 1499: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
! 1500: free(buf->buf);
! 1501: buf->buf = p;
! 1502: buf->sz = isz + 1;
! 1503: *offs = 0;
! 1504: free(roffit_macro);
! 1505: roffit_lines = 0;
! 1506: return(ROFF_REPARSE);
! 1507: } else if (roffit_lines > 1)
! 1508: --roffit_lines;
! 1509:
! 1510: /* Convert all breakable hyphens into ASCII_HYPH. */
! 1511:
1.110 schwarze 1512: start = p = buf->buf + pos;
1.42 schwarze 1513:
1.110 schwarze 1514: while (*p != '\0') {
1.42 schwarze 1515: sz = strcspn(p, "-\\");
1516: p += sz;
1517:
1.110 schwarze 1518: if (*p == '\0')
1.42 schwarze 1519: break;
1520:
1.110 schwarze 1521: if (*p == '\\') {
1.42 schwarze 1522: /* Skip over escapes. */
1523: p++;
1.62 schwarze 1524: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.110 schwarze 1525: if (esc == ESCAPE_ERROR)
1.42 schwarze 1526: break;
1.136 schwarze 1527: while (*p == '-')
1528: p++;
1.42 schwarze 1529: continue;
1530: } else if (p == start) {
1531: p++;
1532: continue;
1533: }
1534:
1.44 schwarze 1535: if (isalpha((unsigned char)p[-1]) &&
1536: isalpha((unsigned char)p[1]))
1.42 schwarze 1537: *p = ASCII_HYPH;
1538: p++;
1.8 schwarze 1539: }
1.42 schwarze 1540: return(ROFF_CONT);
1.8 schwarze 1541: }
1542:
1.1 schwarze 1543: enum rofferr
1.110 schwarze 1544: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.1 schwarze 1545: {
1546: enum rofft t;
1.27 schwarze 1547: enum rofferr e;
1.110 schwarze 1548: int pos; /* parse point */
1.115 schwarze 1549: int spos; /* saved parse point for messages */
1.110 schwarze 1550: int ppos; /* original offset in buf->buf */
1551: int ctl; /* macro line (boolean) */
1552:
1553: ppos = pos = *offs;
1.1 schwarze 1554:
1.102 schwarze 1555: /* Handle in-line equation delimiters. */
1556:
1.108 schwarze 1557: if (r->tbl == NULL &&
1558: r->last_eqn != NULL && r->last_eqn->delim &&
1.102 schwarze 1559: (r->eqn == NULL || r->eqn_inline)) {
1.110 schwarze 1560: e = roff_eqndelim(r, buf, pos);
1.102 schwarze 1561: if (e == ROFF_REPARSE)
1562: return(e);
1563: assert(e == ROFF_CONT);
1564: }
1565:
1566: /* Expand some escape sequences. */
1.8 schwarze 1567:
1.110 schwarze 1568: e = roff_res(r, buf, ln, pos);
1569: if (e == ROFF_IGN)
1.45 schwarze 1570: return(e);
1.110 schwarze 1571: assert(e == ROFF_CONT);
1.8 schwarze 1572:
1.110 schwarze 1573: ctl = roff_getcontrol(r, buf->buf, &pos);
1.35 schwarze 1574:
1.8 schwarze 1575: /*
1.2 schwarze 1576: * First, if a scope is open and we're not a macro, pass the
1.124 schwarze 1577: * text through the macro's filter.
1578: * Equations process all content themselves.
1579: * Tables process almost all content themselves, but we want
1580: * to warn about macros before passing it there.
1.2 schwarze 1581: */
1582:
1.124 schwarze 1583: if (r->last != NULL && ! ctl) {
1.2 schwarze 1584: t = r->last->tok;
1585: assert(roffs[t].text);
1.110 schwarze 1586: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1587: assert(e == ROFF_IGN || e == ROFF_CONT);
1588: if (e != ROFF_CONT)
1.32 schwarze 1589: return(e);
1.54 schwarze 1590: }
1.124 schwarze 1591: if (r->eqn != NULL)
1.110 schwarze 1592: return(eqn_read(&r->eqn, ln, buf->buf, ppos, offs));
1.124 schwarze 1593: if (r->tbl != NULL && ( ! ctl || buf->buf[pos] == '\0'))
1.131 schwarze 1594: return(tbl_read(r->tbl, ln, buf->buf, ppos));
1.124 schwarze 1595: if ( ! ctl)
1.110 schwarze 1596: return(roff_parsetext(buf, pos, offs));
1.100 schwarze 1597:
1598: /* Skip empty request lines. */
1599:
1.110 schwarze 1600: if (buf->buf[pos] == '"') {
1.100 schwarze 1601: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1602: ln, pos, NULL);
1603: return(ROFF_IGN);
1.110 schwarze 1604: } else if (buf->buf[pos] == '\0')
1.100 schwarze 1605: return(ROFF_IGN);
1.2 schwarze 1606:
1607: /*
1608: * If a scope is open, go to the child handler for that macro,
1609: * as it may want to preprocess before doing anything with it.
1.32 schwarze 1610: * Don't do so if an equation is open.
1.2 schwarze 1611: */
1612:
1613: if (r->last) {
1.1 schwarze 1614: t = r->last->tok;
1615: assert(roffs[t].sub);
1.110 schwarze 1616: return((*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs));
1.2 schwarze 1617: }
1618:
1.115 schwarze 1619: /* No scope is open. This is a new request or macro. */
1620:
1621: spos = pos;
1622: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1623:
1624: /* Tables ignore most macros. */
1625:
1626: if (r->tbl != NULL && (t == ROFF_MAX || t == ROFF_TS)) {
1627: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1628: ln, pos, buf->buf + spos);
1.129 schwarze 1629: if (t == ROFF_TS)
1630: return(ROFF_IGN);
1631: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1632: pos++;
1633: while (buf->buf[pos] != '\0' && buf->buf[pos] == ' ')
1634: pos++;
1635: return(tbl_read(r->tbl, ln, buf->buf, pos));
1.115 schwarze 1636: }
1637:
1.2 schwarze 1638: /*
1.115 schwarze 1639: * This is neither a roff request nor a user-defined macro.
1640: * Let the standard macro set parsers handle it.
1.2 schwarze 1641: */
1642:
1.115 schwarze 1643: if (t == ROFF_MAX)
1.1 schwarze 1644: return(ROFF_CONT);
1.115 schwarze 1645:
1646: /* Execute a roff request or a user defined macro. */
1.1 schwarze 1647:
1.2 schwarze 1648: assert(roffs[t].proc);
1.110 schwarze 1649: return((*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs));
1.2 schwarze 1650: }
1651:
1.27 schwarze 1652: void
1.2 schwarze 1653: roff_endparse(struct roff *r)
1654: {
1.1 schwarze 1655:
1.27 schwarze 1656: if (r->last)
1.94 schwarze 1657: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1658: r->last->line, r->last->col,
1659: roffs[r->last->tok].name);
1.27 schwarze 1660:
1.32 schwarze 1661: if (r->eqn) {
1.94 schwarze 1662: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1663: r->eqn->eqn.ln, r->eqn->eqn.pos, "EQ");
1.41 schwarze 1664: eqn_end(&r->eqn);
1.32 schwarze 1665: }
1666:
1.27 schwarze 1667: if (r->tbl) {
1.94 schwarze 1668: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1669: r->tbl->line, r->tbl->pos, "TS");
1.41 schwarze 1670: tbl_end(&r->tbl);
1.27 schwarze 1671: }
1.1 schwarze 1672: }
1673:
1674: /*
1675: * Parse a roff node's type from the input buffer. This must be in the
1676: * form of ".foo xxx" in the usual way.
1677: */
1678: static enum rofft
1.87 schwarze 1679: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.1 schwarze 1680: {
1.87 schwarze 1681: char *cp;
1.16 schwarze 1682: const char *mac;
1683: size_t maclen;
1.1 schwarze 1684: enum rofft t;
1685:
1.87 schwarze 1686: cp = buf + *pos;
1687:
1688: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.1 schwarze 1689: return(ROFF_MAX);
1690:
1.87 schwarze 1691: mac = cp;
1692: maclen = roff_getname(r, &cp, ln, ppos);
1.1 schwarze 1693:
1.16 schwarze 1694: t = (r->current_string = roff_getstrn(r, mac, maclen))
1.42 schwarze 1695: ? ROFF_USERDEF : roffhash_find(mac, maclen);
1.1 schwarze 1696:
1.87 schwarze 1697: if (ROFF_MAX != t)
1698: *pos = cp - buf;
1.1 schwarze 1699:
1700: return(t);
1701: }
1702:
1.138 schwarze 1703: /* --- handling of request blocks ----------------------------------------- */
1704:
1.1 schwarze 1705: static enum rofferr
1.2 schwarze 1706: roff_cblock(ROFF_ARGS)
1.1 schwarze 1707: {
1708:
1.2 schwarze 1709: /*
1710: * A block-close `..' should only be invoked as a child of an
1711: * ignore macro, otherwise raise a warning and just ignore it.
1712: */
1713:
1.110 schwarze 1714: if (r->last == NULL) {
1.94 schwarze 1715: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1716: ln, ppos, "..");
1.2 schwarze 1717: return(ROFF_IGN);
1718: }
1.1 schwarze 1719:
1.2 schwarze 1720: switch (r->last->tok) {
1.80 schwarze 1721: case ROFF_am:
1.93 schwarze 1722: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.2 schwarze 1723: /* FALLTHROUGH */
1.80 schwarze 1724: case ROFF_ami:
1.2 schwarze 1725: /* FALLTHROUGH */
1.80 schwarze 1726: case ROFF_de:
1.23 schwarze 1727: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.2 schwarze 1728: /* FALLTHROUGH */
1.80 schwarze 1729: case ROFF_dei:
1.2 schwarze 1730: /* FALLTHROUGH */
1.80 schwarze 1731: case ROFF_ig:
1.2 schwarze 1732: break;
1733: default:
1.94 schwarze 1734: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1735: ln, ppos, "..");
1.1 schwarze 1736: return(ROFF_IGN);
1.2 schwarze 1737: }
1738:
1.110 schwarze 1739: if (buf->buf[pos] != '\0')
1.90 schwarze 1740: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 1741: ".. %s", buf->buf + pos);
1.2 schwarze 1742:
1743: roffnode_pop(r);
1744: roffnode_cleanscope(r);
1745: return(ROFF_IGN);
1746:
1747: }
1.1 schwarze 1748:
1.2 schwarze 1749: static void
1750: roffnode_cleanscope(struct roff *r)
1751: {
1.1 schwarze 1752:
1.2 schwarze 1753: while (r->last) {
1.46 schwarze 1754: if (--r->last->endspan != 0)
1.2 schwarze 1755: break;
1756: roffnode_pop(r);
1757: }
1758: }
1.1 schwarze 1759:
1.68 schwarze 1760: static void
1761: roff_ccond(struct roff *r, int ln, int ppos)
1.2 schwarze 1762: {
1.1 schwarze 1763:
1.2 schwarze 1764: if (NULL == r->last) {
1.94 schwarze 1765: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1766: ln, ppos, "\\}");
1.68 schwarze 1767: return;
1.2 schwarze 1768: }
1.1 schwarze 1769:
1.2 schwarze 1770: switch (r->last->tok) {
1.80 schwarze 1771: case ROFF_el:
1.2 schwarze 1772: /* FALLTHROUGH */
1.80 schwarze 1773: case ROFF_ie:
1.2 schwarze 1774: /* FALLTHROUGH */
1.80 schwarze 1775: case ROFF_if:
1.2 schwarze 1776: break;
1777: default:
1.94 schwarze 1778: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1779: ln, ppos, "\\}");
1.68 schwarze 1780: return;
1.2 schwarze 1781: }
1.1 schwarze 1782:
1.2 schwarze 1783: if (r->last->endspan > -1) {
1.94 schwarze 1784: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1785: ln, ppos, "\\}");
1.68 schwarze 1786: return;
1.2 schwarze 1787: }
1788:
1789: roffnode_pop(r);
1790: roffnode_cleanscope(r);
1.68 schwarze 1791: return;
1.1 schwarze 1792: }
1793:
1794: static enum rofferr
1.2 schwarze 1795: roff_block(ROFF_ARGS)
1.1 schwarze 1796: {
1.93 schwarze 1797: const char *name;
1798: char *iname, *cp;
1.86 schwarze 1799: size_t namesz;
1.16 schwarze 1800:
1.93 schwarze 1801: /* Ignore groff compatibility mode for now. */
1.2 schwarze 1802:
1.110 schwarze 1803: if (tok == ROFF_de1)
1.93 schwarze 1804: tok = ROFF_de;
1.123 schwarze 1805: else if (tok == ROFF_dei1)
1806: tok = ROFF_dei;
1.110 schwarze 1807: else if (tok == ROFF_am1)
1.93 schwarze 1808: tok = ROFF_am;
1.123 schwarze 1809: else if (tok == ROFF_ami1)
1810: tok = ROFF_ami;
1.93 schwarze 1811:
1812: /* Parse the macro name argument. */
1813:
1.110 schwarze 1814: cp = buf->buf + pos;
1815: if (tok == ROFF_ig) {
1.93 schwarze 1816: iname = NULL;
1817: namesz = 0;
1818: } else {
1819: iname = cp;
1820: namesz = roff_getname(r, &cp, ln, ppos);
1821: iname[namesz] = '\0';
1822: }
1.22 schwarze 1823:
1.93 schwarze 1824: /* Resolve the macro name argument if it is indirect. */
1.22 schwarze 1825:
1.110 schwarze 1826: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1827: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.93 schwarze 1828: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1829: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1830: "%.*s", (int)namesz, iname);
1831: namesz = 0;
1832: } else
1833: namesz = strlen(name);
1834: } else
1835: name = iname;
1.22 schwarze 1836:
1.110 schwarze 1837: if (namesz == 0 && tok != ROFF_ig) {
1.93 schwarze 1838: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1839: ln, ppos, roffs[tok].name);
1840: return(ROFF_IGN);
1841: }
1.2 schwarze 1842:
1.16 schwarze 1843: roffnode_push(r, tok, name, ln, ppos);
1844:
1845: /*
1846: * At the beginning of a `de' macro, clear the existing string
1847: * with the same name, if there is one. New content will be
1.66 schwarze 1848: * appended from roff_block_text() in multiline mode.
1.16 schwarze 1849: */
1.22 schwarze 1850:
1.110 schwarze 1851: if (tok == ROFF_de || tok == ROFF_dei)
1.86 schwarze 1852: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.2 schwarze 1853:
1.110 schwarze 1854: if (*cp == '\0')
1.2 schwarze 1855: return(ROFF_IGN);
1.1 schwarze 1856:
1.93 schwarze 1857: /* Get the custom end marker. */
1.22 schwarze 1858:
1.93 schwarze 1859: iname = cp;
1.86 schwarze 1860: namesz = roff_getname(r, &cp, ln, ppos);
1.93 schwarze 1861:
1862: /* Resolve the end marker if it is indirect. */
1863:
1.110 schwarze 1864: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1865: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.93 schwarze 1866: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1867: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1868: "%.*s", (int)namesz, iname);
1869: namesz = 0;
1870: } else
1871: namesz = strlen(name);
1872: } else
1873: name = iname;
1874:
1.86 schwarze 1875: if (namesz)
1876: r->last->end = mandoc_strndup(name, namesz);
1.2 schwarze 1877:
1.110 schwarze 1878: if (*cp != '\0')
1.90 schwarze 1879: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1880: ln, pos, ".%s ... %s", roffs[tok].name, cp);
1.1 schwarze 1881:
1882: return(ROFF_IGN);
1883: }
1884:
1885: static enum rofferr
1.2 schwarze 1886: roff_block_sub(ROFF_ARGS)
1.1 schwarze 1887: {
1.2 schwarze 1888: enum rofft t;
1889: int i, j;
1890:
1891: /*
1892: * First check whether a custom macro exists at this level. If
1893: * it does, then check against it. This is some of groff's
1894: * stranger behaviours. If we encountered a custom end-scope
1895: * tag and that tag also happens to be a "real" macro, then we
1896: * need to try interpreting it again as a real macro. If it's
1897: * not, then return ignore. Else continue.
1898: */
1899:
1900: if (r->last->end) {
1.35 schwarze 1901: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.110 schwarze 1902: if (buf->buf[i] != r->last->end[j])
1.2 schwarze 1903: break;
1.1 schwarze 1904:
1.110 schwarze 1905: if (r->last->end[j] == '\0' &&
1906: (buf->buf[i] == '\0' ||
1907: buf->buf[i] == ' ' ||
1908: buf->buf[i] == '\t')) {
1.2 schwarze 1909: roffnode_pop(r);
1910: roffnode_cleanscope(r);
1.1 schwarze 1911:
1.110 schwarze 1912: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.35 schwarze 1913: i++;
1914:
1915: pos = i;
1.110 schwarze 1916: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1917: ROFF_MAX)
1.2 schwarze 1918: return(ROFF_RERUN);
1919: return(ROFF_IGN);
1920: }
1.1 schwarze 1921: }
1922:
1.2 schwarze 1923: /*
1924: * If we have no custom end-query or lookup failed, then try
1925: * pulling it out of the hashtable.
1926: */
1.1 schwarze 1927:
1.110 schwarze 1928: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.1 schwarze 1929:
1.110 schwarze 1930: if (t != ROFF_cblock) {
1931: if (tok != ROFF_ig)
1932: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.1 schwarze 1933: return(ROFF_IGN);
1.16 schwarze 1934: }
1.1 schwarze 1935:
1.2 schwarze 1936: assert(roffs[t].proc);
1.110 schwarze 1937: return((*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs));
1.2 schwarze 1938: }
1939:
1940: static enum rofferr
1941: roff_block_text(ROFF_ARGS)
1942: {
1943:
1.110 schwarze 1944: if (tok != ROFF_ig)
1945: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.16 schwarze 1946:
1.2 schwarze 1947: return(ROFF_IGN);
1948: }
1949:
1950: static enum rofferr
1951: roff_cond_sub(ROFF_ARGS)
1952: {
1953: enum rofft t;
1.37 schwarze 1954: char *ep;
1.71 schwarze 1955: int rr;
1.2 schwarze 1956:
1957: rr = r->last->rule;
1.37 schwarze 1958: roffnode_cleanscope(r);
1.110 schwarze 1959: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.2 schwarze 1960:
1.37 schwarze 1961: /*
1.50 schwarze 1962: * Fully handle known macros when they are structurally
1963: * required or when the conditional evaluated to true.
1.5 schwarze 1964: */
1965:
1.110 schwarze 1966: if ((t != ROFF_MAX) &&
1967: (rr || roffs[t].flags & ROFFMAC_STRUCT)) {
1.50 schwarze 1968: assert(roffs[t].proc);
1.110 schwarze 1969: return((*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs));
1.50 schwarze 1970: }
1.39 schwarze 1971:
1.69 schwarze 1972: /*
1973: * If `\}' occurs on a macro line without a preceding macro,
1974: * drop the line completely.
1975: */
1976:
1.110 schwarze 1977: ep = buf->buf + pos;
1978: if (ep[0] == '\\' && ep[1] == '}')
1.71 schwarze 1979: rr = 0;
1.69 schwarze 1980:
1.50 schwarze 1981: /* Always check for the closing delimiter `\}'. */
1.39 schwarze 1982:
1.110 schwarze 1983: while ((ep = strchr(ep, '\\')) != NULL) {
1984: if (*(++ep) == '}') {
1.70 schwarze 1985: *ep = '&';
1.110 schwarze 1986: roff_ccond(r, ln, ep - buf->buf - 1);
1.70 schwarze 1987: }
1.119 schwarze 1988: if (*ep != '\0')
1989: ++ep;
1.50 schwarze 1990: }
1.71 schwarze 1991: return(rr ? ROFF_CONT : ROFF_IGN);
1.2 schwarze 1992: }
1993:
1994: static enum rofferr
1995: roff_cond_text(ROFF_ARGS)
1996: {
1.37 schwarze 1997: char *ep;
1.71 schwarze 1998: int rr;
1.2 schwarze 1999:
2000: rr = r->last->rule;
1.37 schwarze 2001: roffnode_cleanscope(r);
1.1 schwarze 2002:
1.110 schwarze 2003: ep = buf->buf + pos;
2004: while ((ep = strchr(ep, '\\')) != NULL) {
2005: if (*(++ep) == '}') {
1.70 schwarze 2006: *ep = '&';
1.110 schwarze 2007: roff_ccond(r, ln, ep - buf->buf - 1);
1.70 schwarze 2008: }
1.119 schwarze 2009: if (*ep != '\0')
2010: ++ep;
1.2 schwarze 2011: }
1.71 schwarze 2012: return(rr ? ROFF_CONT : ROFF_IGN);
1.2 schwarze 2013: }
2014:
1.138 schwarze 2015: /* --- handling of numeric and conditional expressions -------------------- */
2016:
1.77 schwarze 2017: /*
2018: * Parse a single signed integer number. Stop at the first non-digit.
2019: * If there is at least one digit, return success and advance the
2020: * parse point, else return failure and let the parse point unchanged.
2021: * Ignore overflows, treat them just like the C language.
2022: */
1.56 schwarze 2023: static int
1.133 schwarze 2024: roff_getnum(const char *v, int *pos, int *res, int flags)
1.56 schwarze 2025: {
1.133 schwarze 2026: int myres, scaled, n, p;
1.79 schwarze 2027:
2028: if (NULL == res)
2029: res = &myres;
1.56 schwarze 2030:
2031: p = *pos;
2032: n = v[p] == '-';
1.133 schwarze 2033: if (n || v[p] == '+')
1.56 schwarze 2034: p++;
2035:
1.133 schwarze 2036: if (flags & ROFFNUM_WHITE)
2037: while (isspace((unsigned char)v[p]))
2038: p++;
2039:
1.56 schwarze 2040: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.77 schwarze 2041: *res = 10 * *res + v[p] - '0';
1.56 schwarze 2042: if (p == *pos + n)
2043: return 0;
2044:
2045: if (n)
2046: *res = -*res;
2047:
1.126 schwarze 2048: /* Each number may be followed by one optional scaling unit. */
2049:
2050: switch (v[p]) {
2051: case 'f':
1.133 schwarze 2052: scaled = *res * 65536;
1.126 schwarze 2053: break;
2054: case 'i':
1.133 schwarze 2055: scaled = *res * 240;
1.126 schwarze 2056: break;
2057: case 'c':
1.133 schwarze 2058: scaled = *res * 240 / 2.54;
1.126 schwarze 2059: break;
2060: case 'v':
2061: /* FALLTROUGH */
2062: case 'P':
1.133 schwarze 2063: scaled = *res * 40;
1.126 schwarze 2064: break;
2065: case 'm':
2066: /* FALLTROUGH */
2067: case 'n':
1.133 schwarze 2068: scaled = *res * 24;
1.126 schwarze 2069: break;
2070: case 'p':
1.133 schwarze 2071: scaled = *res * 10 / 3;
1.126 schwarze 2072: break;
2073: case 'u':
1.133 schwarze 2074: scaled = *res;
1.126 schwarze 2075: break;
2076: case 'M':
1.133 schwarze 2077: scaled = *res * 6 / 25;
1.126 schwarze 2078: break;
2079: default:
1.133 schwarze 2080: scaled = *res;
1.126 schwarze 2081: p--;
2082: break;
2083: }
1.133 schwarze 2084: if (flags & ROFFNUM_SCALE)
2085: *res = scaled;
1.126 schwarze 2086:
2087: *pos = p + 1;
2088: return(1);
1.56 schwarze 2089: }
2090:
1.71 schwarze 2091: /*
2092: * Evaluate a string comparison condition.
2093: * The first character is the delimiter.
2094: * Succeed if the string up to its second occurrence
2095: * matches the string up to its third occurence.
2096: * Advance the cursor after the third occurrence
2097: * or lacking that, to the end of the line.
2098: */
2099: static int
2100: roff_evalstrcond(const char *v, int *pos)
2101: {
2102: const char *s1, *s2, *s3;
2103: int match;
2104:
2105: match = 0;
2106: s1 = v + *pos; /* initial delimiter */
2107: s2 = s1 + 1; /* for scanning the first string */
2108: s3 = strchr(s2, *s1); /* for scanning the second string */
2109:
2110: if (NULL == s3) /* found no middle delimiter */
2111: goto out;
2112:
2113: while ('\0' != *++s3) {
2114: if (*s2 != *s3) { /* mismatch */
2115: s3 = strchr(s3, *s1);
2116: break;
2117: }
2118: if (*s3 == *s1) { /* found the final delimiter */
2119: match = 1;
2120: break;
2121: }
2122: s2++;
2123: }
2124:
2125: out:
2126: if (NULL == s3)
2127: s3 = strchr(s2, '\0');
1.114 schwarze 2128: else if (*s3 != '\0')
1.71 schwarze 2129: s3++;
2130: *pos = s3 - v;
2131: return(match);
2132: }
2133:
1.77 schwarze 2134: /*
2135: * Evaluate an optionally negated single character, numerical,
2136: * or string condition.
2137: */
1.71 schwarze 2138: static int
1.143 schwarze 2139: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.5 schwarze 2140: {
1.143 schwarze 2141: char *cp, *name;
2142: size_t sz;
1.113 schwarze 2143: int number, savepos, wanttrue;
1.5 schwarze 2144:
1.71 schwarze 2145: if ('!' == v[*pos]) {
2146: wanttrue = 0;
2147: (*pos)++;
2148: } else
2149: wanttrue = 1;
2150:
1.5 schwarze 2151: switch (v[*pos]) {
1.112 schwarze 2152: case '\0':
2153: return(0);
1.80 schwarze 2154: case 'n':
1.71 schwarze 2155: /* FALLTHROUGH */
1.80 schwarze 2156: case 'o':
1.5 schwarze 2157: (*pos)++;
1.71 schwarze 2158: return(wanttrue);
1.80 schwarze 2159: case 'c':
1.71 schwarze 2160: /* FALLTHROUGH */
1.80 schwarze 2161: case 'd':
1.71 schwarze 2162: /* FALLTHROUGH */
1.80 schwarze 2163: case 'e':
1.5 schwarze 2164: /* FALLTHROUGH */
1.80 schwarze 2165: case 't':
1.111 schwarze 2166: /* FALLTHROUGH */
2167: case 'v':
1.5 schwarze 2168: (*pos)++;
1.71 schwarze 2169: return(!wanttrue);
1.143 schwarze 2170: case 'r':
2171: cp = name = v + ++*pos;
2172: sz = roff_getname(r, &cp, ln, *pos);
2173: *pos = cp - v;
2174: return((sz && roff_hasregn(r, name, sz)) == wanttrue);
1.5 schwarze 2175: default:
2176: break;
2177: }
2178:
1.113 schwarze 2179: savepos = *pos;
1.133 schwarze 2180: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.77 schwarze 2181: return((number > 0) == wanttrue);
1.113 schwarze 2182: else if (*pos == savepos)
2183: return(roff_evalstrcond(v, pos) == wanttrue);
1.77 schwarze 2184: else
1.113 schwarze 2185: return (0);
1.5 schwarze 2186: }
2187:
1.2 schwarze 2188: static enum rofferr
1.21 schwarze 2189: roff_line_ignore(ROFF_ARGS)
1.6 schwarze 2190: {
1.30 schwarze 2191:
1.21 schwarze 2192: return(ROFF_IGN);
2193: }
2194:
2195: static enum rofferr
1.123 schwarze 2196: roff_insec(ROFF_ARGS)
2197: {
2198:
2199: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
2200: ln, ppos, roffs[tok].name);
2201: return(ROFF_IGN);
2202: }
2203:
2204: static enum rofferr
2205: roff_unsupp(ROFF_ARGS)
2206: {
2207:
2208: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
2209: ln, ppos, roffs[tok].name);
2210: return(ROFF_IGN);
2211: }
2212:
2213: static enum rofferr
1.2 schwarze 2214: roff_cond(ROFF_ARGS)
2215: {
1.46 schwarze 2216:
2217: roffnode_push(r, tok, NULL, ln, ppos);
1.2 schwarze 2218:
1.80 schwarze 2219: /*
1.35 schwarze 2220: * An `.el' has no conditional body: it will consume the value
2221: * of the current rstack entry set in prior `ie' calls or
1.80 schwarze 2222: * defaults to DENY.
1.35 schwarze 2223: *
2224: * If we're not an `el', however, then evaluate the conditional.
2225: */
1.1 schwarze 2226:
1.110 schwarze 2227: r->last->rule = tok == ROFF_el ?
1.80 schwarze 2228: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.110 schwarze 2229: roff_evalcond(r, ln, buf->buf, &pos);
1.2 schwarze 2230:
1.35 schwarze 2231: /*
2232: * An if-else will put the NEGATION of the current evaluated
2233: * conditional into the stack of rules.
2234: */
2235:
1.110 schwarze 2236: if (tok == ROFF_ie) {
1.96 schwarze 2237: if (r->rstackpos + 1 == r->rstacksz) {
2238: r->rstacksz += 16;
2239: r->rstack = mandoc_reallocarray(r->rstack,
2240: r->rstacksz, sizeof(int));
1.35 schwarze 2241: }
1.71 schwarze 2242: r->rstack[++r->rstackpos] = !r->last->rule;
1.2 schwarze 2243: }
1.5 schwarze 2244:
2245: /* If the parent has false as its rule, then so do we. */
2246:
1.71 schwarze 2247: if (r->last->parent && !r->last->parent->rule)
2248: r->last->rule = 0;
1.5 schwarze 2249:
2250: /*
1.46 schwarze 2251: * Determine scope.
2252: * If there is nothing on the line after the conditional,
2253: * not even whitespace, use next-line scope.
1.5 schwarze 2254: */
1.2 schwarze 2255:
1.110 schwarze 2256: if (buf->buf[pos] == '\0') {
1.46 schwarze 2257: r->last->endspan = 2;
2258: goto out;
2259: }
2260:
1.110 schwarze 2261: while (buf->buf[pos] == ' ')
1.46 schwarze 2262: pos++;
2263:
2264: /* An opening brace requests multiline scope. */
1.2 schwarze 2265:
1.110 schwarze 2266: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.2 schwarze 2267: r->last->endspan = -1;
2268: pos += 2;
1.144 schwarze 2269: while (buf->buf[pos] == ' ')
2270: pos++;
1.46 schwarze 2271: goto out;
1.80 schwarze 2272: }
1.2 schwarze 2273:
2274: /*
1.46 schwarze 2275: * Anything else following the conditional causes
2276: * single-line scope. Warn if the scope contains
2277: * nothing but trailing whitespace.
1.2 schwarze 2278: */
2279:
1.110 schwarze 2280: if (buf->buf[pos] == '\0')
1.89 schwarze 2281: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
2282: ln, ppos, roffs[tok].name);
1.2 schwarze 2283:
1.46 schwarze 2284: r->last->endspan = 1;
1.1 schwarze 2285:
1.46 schwarze 2286: out:
1.2 schwarze 2287: *offs = pos;
2288: return(ROFF_RERUN);
1.1 schwarze 2289: }
2290:
1.2 schwarze 2291: static enum rofferr
1.7 schwarze 2292: roff_ds(ROFF_ARGS)
2293: {
1.85 schwarze 2294: char *string;
2295: const char *name;
2296: size_t namesz;
1.10 schwarze 2297:
1.123 schwarze 2298: /* Ignore groff compatibility mode for now. */
2299:
2300: if (tok == ROFF_ds1)
2301: tok = ROFF_ds;
2302: else if (tok == ROFF_as1)
2303: tok = ROFF_as;
2304:
1.10 schwarze 2305: /*
1.85 schwarze 2306: * The first word is the name of the string.
2307: * If it is empty or terminated by an escape sequence,
2308: * abort the `ds' request without defining anything.
1.10 schwarze 2309: */
1.7 schwarze 2310:
1.110 schwarze 2311: name = string = buf->buf + pos;
2312: if (*name == '\0')
1.7 schwarze 2313: return(ROFF_IGN);
2314:
1.85 schwarze 2315: namesz = roff_getname(r, &string, ln, pos);
1.110 schwarze 2316: if (name[namesz] == '\\')
1.85 schwarze 2317: return(ROFF_IGN);
2318:
2319: /* Read past the initial double-quote, if any. */
1.110 schwarze 2320: if (*string == '"')
1.7 schwarze 2321: string++;
2322:
1.10 schwarze 2323: /* The rest is the value. */
1.85 schwarze 2324: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2325: ROFF_as == tok);
1.7 schwarze 2326: return(ROFF_IGN);
2327: }
2328:
1.77 schwarze 2329: /*
2330: * Parse a single operator, one or two characters long.
2331: * If the operator is recognized, return success and advance the
2332: * parse point, else return failure and let the parse point unchanged.
2333: */
2334: static int
2335: roff_getop(const char *v, int *pos, char *res)
2336: {
2337:
2338: *res = v[*pos];
2339:
2340: switch (*res) {
1.80 schwarze 2341: case '+':
1.77 schwarze 2342: /* FALLTHROUGH */
1.80 schwarze 2343: case '-':
1.77 schwarze 2344: /* FALLTHROUGH */
1.80 schwarze 2345: case '*':
1.77 schwarze 2346: /* FALLTHROUGH */
1.80 schwarze 2347: case '/':
1.77 schwarze 2348: /* FALLTHROUGH */
1.80 schwarze 2349: case '%':
1.77 schwarze 2350: /* FALLTHROUGH */
1.80 schwarze 2351: case '&':
1.77 schwarze 2352: /* FALLTHROUGH */
1.80 schwarze 2353: case ':':
1.77 schwarze 2354: break;
2355: case '<':
2356: switch (v[*pos + 1]) {
1.80 schwarze 2357: case '=':
1.77 schwarze 2358: *res = 'l';
2359: (*pos)++;
2360: break;
1.80 schwarze 2361: case '>':
1.77 schwarze 2362: *res = '!';
2363: (*pos)++;
2364: break;
1.80 schwarze 2365: case '?':
1.77 schwarze 2366: *res = 'i';
2367: (*pos)++;
2368: break;
2369: default:
2370: break;
2371: }
2372: break;
2373: case '>':
2374: switch (v[*pos + 1]) {
1.80 schwarze 2375: case '=':
1.77 schwarze 2376: *res = 'g';
2377: (*pos)++;
2378: break;
1.80 schwarze 2379: case '?':
1.77 schwarze 2380: *res = 'a';
2381: (*pos)++;
2382: break;
2383: default:
2384: break;
2385: }
2386: break;
2387: case '=':
2388: if ('=' == v[*pos + 1])
2389: (*pos)++;
2390: break;
2391: default:
2392: return(0);
2393: }
2394: (*pos)++;
2395:
2396: return(*res);
2397: }
2398:
2399: /*
2400: * Evaluate either a parenthesized numeric expression
2401: * or a single signed integer number.
2402: */
2403: static int
1.106 schwarze 2404: roff_evalpar(struct roff *r, int ln,
1.133 schwarze 2405: const char *v, int *pos, int *res, int flags)
1.77 schwarze 2406: {
2407:
2408: if ('(' != v[*pos])
1.133 schwarze 2409: return(roff_getnum(v, pos, res, flags));
1.77 schwarze 2410:
2411: (*pos)++;
1.133 schwarze 2412: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.77 schwarze 2413: return(0);
2414:
1.79 schwarze 2415: /*
2416: * Omission of the closing parenthesis
2417: * is an error in validation mode,
2418: * but ignored in evaluation mode.
2419: */
2420:
1.77 schwarze 2421: if (')' == v[*pos])
2422: (*pos)++;
1.79 schwarze 2423: else if (NULL == res)
2424: return(0);
1.77 schwarze 2425:
2426: return(1);
2427: }
2428:
2429: /*
2430: * Evaluate a complete numeric expression.
2431: * Proceed left to right, there is no concept of precedence.
2432: */
2433: static int
1.106 schwarze 2434: roff_evalnum(struct roff *r, int ln, const char *v,
1.133 schwarze 2435: int *pos, int *res, int flags)
1.77 schwarze 2436: {
2437: int mypos, operand2;
2438: char operator;
2439:
2440: if (NULL == pos) {
2441: mypos = 0;
2442: pos = &mypos;
2443: }
2444:
1.133 schwarze 2445: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2446: while (isspace((unsigned char)v[*pos]))
2447: (*pos)++;
2448:
1.133 schwarze 2449: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.77 schwarze 2450: return(0);
2451:
2452: while (1) {
1.133 schwarze 2453: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2454: while (isspace((unsigned char)v[*pos]))
2455: (*pos)++;
2456:
2457: if ( ! roff_getop(v, pos, &operator))
2458: break;
2459:
1.133 schwarze 2460: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2461: while (isspace((unsigned char)v[*pos]))
2462: (*pos)++;
2463:
1.133 schwarze 2464: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.77 schwarze 2465: return(0);
2466:
1.133 schwarze 2467: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2468: while (isspace((unsigned char)v[*pos]))
2469: (*pos)++;
1.79 schwarze 2470:
2471: if (NULL == res)
2472: continue;
1.77 schwarze 2473:
2474: switch (operator) {
1.80 schwarze 2475: case '+':
1.77 schwarze 2476: *res += operand2;
2477: break;
1.80 schwarze 2478: case '-':
1.77 schwarze 2479: *res -= operand2;
2480: break;
1.80 schwarze 2481: case '*':
1.77 schwarze 2482: *res *= operand2;
2483: break;
1.80 schwarze 2484: case '/':
1.116 schwarze 2485: if (operand2 == 0) {
1.106 schwarze 2486: mandoc_msg(MANDOCERR_DIVZERO,
2487: r->parse, ln, *pos, v);
2488: *res = 0;
2489: break;
2490: }
1.77 schwarze 2491: *res /= operand2;
2492: break;
1.80 schwarze 2493: case '%':
1.116 schwarze 2494: if (operand2 == 0) {
2495: mandoc_msg(MANDOCERR_DIVZERO,
2496: r->parse, ln, *pos, v);
2497: *res = 0;
2498: break;
2499: }
1.77 schwarze 2500: *res %= operand2;
2501: break;
1.80 schwarze 2502: case '<':
1.77 schwarze 2503: *res = *res < operand2;
2504: break;
1.80 schwarze 2505: case '>':
1.77 schwarze 2506: *res = *res > operand2;
2507: break;
1.80 schwarze 2508: case 'l':
1.77 schwarze 2509: *res = *res <= operand2;
2510: break;
1.80 schwarze 2511: case 'g':
1.77 schwarze 2512: *res = *res >= operand2;
2513: break;
1.80 schwarze 2514: case '=':
1.77 schwarze 2515: *res = *res == operand2;
2516: break;
1.80 schwarze 2517: case '!':
1.77 schwarze 2518: *res = *res != operand2;
2519: break;
1.80 schwarze 2520: case '&':
1.77 schwarze 2521: *res = *res && operand2;
2522: break;
1.80 schwarze 2523: case ':':
1.77 schwarze 2524: *res = *res || operand2;
2525: break;
1.80 schwarze 2526: case 'i':
1.77 schwarze 2527: if (operand2 < *res)
2528: *res = operand2;
2529: break;
1.80 schwarze 2530: case 'a':
1.77 schwarze 2531: if (operand2 > *res)
2532: *res = operand2;
2533: break;
2534: default:
2535: abort();
2536: }
2537: }
2538: return(1);
2539: }
2540:
1.138 schwarze 2541: /* --- register management ------------------------------------------------ */
2542:
1.52 schwarze 2543: void
1.60 schwarze 2544: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.41 schwarze 2545: {
1.52 schwarze 2546: struct roffreg *reg;
2547:
2548: /* Search for an existing register with the same name. */
2549: reg = r->regtab;
2550:
2551: while (reg && strcmp(name, reg->key.p))
2552: reg = reg->next;
1.41 schwarze 2553:
1.52 schwarze 2554: if (NULL == reg) {
2555: /* Create a new register. */
2556: reg = mandoc_malloc(sizeof(struct roffreg));
2557: reg->key.p = mandoc_strdup(name);
2558: reg->key.sz = strlen(name);
1.60 schwarze 2559: reg->val = 0;
1.52 schwarze 2560: reg->next = r->regtab;
2561: r->regtab = reg;
2562: }
2563:
1.60 schwarze 2564: if ('+' == sign)
2565: reg->val += val;
2566: else if ('-' == sign)
2567: reg->val -= val;
2568: else
2569: reg->val = val;
1.41 schwarze 2570: }
2571:
1.65 schwarze 2572: /*
2573: * Handle some predefined read-only number registers.
2574: * For now, return -1 if the requested register is not predefined;
2575: * in case a predefined read-only register having the value -1
2576: * were to turn up, another special value would have to be chosen.
2577: */
2578: static int
1.145 schwarze 2579: roff_getregro(const struct roff *r, const char *name)
1.65 schwarze 2580: {
2581:
2582: switch (*name) {
1.145 schwarze 2583: case '$': /* Number of arguments of the last macro evaluated. */
2584: return(r->argc);
1.80 schwarze 2585: case 'A': /* ASCII approximation mode is always off. */
1.65 schwarze 2586: return(0);
1.80 schwarze 2587: case 'g': /* Groff compatibility mode is always on. */
1.65 schwarze 2588: return(1);
1.80 schwarze 2589: case 'H': /* Fixed horizontal resolution. */
1.65 schwarze 2590: return (24);
1.80 schwarze 2591: case 'j': /* Always adjust left margin only. */
1.65 schwarze 2592: return(0);
1.80 schwarze 2593: case 'T': /* Some output device is always defined. */
1.65 schwarze 2594: return(1);
1.80 schwarze 2595: case 'V': /* Fixed vertical resolution. */
1.65 schwarze 2596: return (40);
2597: default:
2598: return (-1);
2599: }
2600: }
2601:
1.53 schwarze 2602: int
1.52 schwarze 2603: roff_getreg(const struct roff *r, const char *name)
1.41 schwarze 2604: {
1.52 schwarze 2605: struct roffreg *reg;
1.65 schwarze 2606: int val;
2607:
2608: if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) {
1.145 schwarze 2609: val = roff_getregro(r, name + 1);
1.65 schwarze 2610: if (-1 != val)
2611: return (val);
2612: }
1.52 schwarze 2613:
2614: for (reg = r->regtab; reg; reg = reg->next)
2615: if (0 == strcmp(name, reg->key.p))
1.53 schwarze 2616: return(reg->val);
2617:
2618: return(0);
2619: }
2620:
2621: static int
2622: roff_getregn(const struct roff *r, const char *name, size_t len)
2623: {
2624: struct roffreg *reg;
1.65 schwarze 2625: int val;
2626:
2627: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2628: val = roff_getregro(r, name + 1);
1.65 schwarze 2629: if (-1 != val)
2630: return (val);
2631: }
1.53 schwarze 2632:
2633: for (reg = r->regtab; reg; reg = reg->next)
2634: if (len == reg->key.sz &&
2635: 0 == strncmp(name, reg->key.p, len))
2636: return(reg->val);
1.143 schwarze 2637:
2638: return(0);
2639: }
2640:
2641: static int
2642: roff_hasregn(const struct roff *r, const char *name, size_t len)
2643: {
2644: struct roffreg *reg;
2645: int val;
2646:
2647: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2648: val = roff_getregro(r, name + 1);
1.143 schwarze 2649: if (-1 != val)
2650: return(1);
2651: }
2652:
2653: for (reg = r->regtab; reg; reg = reg->next)
2654: if (len == reg->key.sz &&
2655: 0 == strncmp(name, reg->key.p, len))
2656: return(1);
1.41 schwarze 2657:
1.52 schwarze 2658: return(0);
1.41 schwarze 2659: }
2660:
1.52 schwarze 2661: static void
2662: roff_freereg(struct roffreg *reg)
1.41 schwarze 2663: {
1.52 schwarze 2664: struct roffreg *old_reg;
1.41 schwarze 2665:
1.52 schwarze 2666: while (NULL != reg) {
2667: free(reg->key.p);
2668: old_reg = reg;
2669: reg = reg->next;
2670: free(old_reg);
2671: }
1.41 schwarze 2672: }
1.7 schwarze 2673:
2674: static enum rofferr
1.6 schwarze 2675: roff_nr(ROFF_ARGS)
1.1 schwarze 2676: {
1.85 schwarze 2677: char *key, *val;
2678: size_t keysz;
1.37 schwarze 2679: int iv;
1.60 schwarze 2680: char sign;
1.6 schwarze 2681:
1.110 schwarze 2682: key = val = buf->buf + pos;
2683: if (*key == '\0')
1.85 schwarze 2684: return(ROFF_IGN);
2685:
2686: keysz = roff_getname(r, &val, ln, pos);
1.110 schwarze 2687: if (key[keysz] == '\\')
1.85 schwarze 2688: return(ROFF_IGN);
2689: key[keysz] = '\0';
1.6 schwarze 2690:
1.60 schwarze 2691: sign = *val;
1.110 schwarze 2692: if (sign == '+' || sign == '-')
1.60 schwarze 2693: val++;
2694:
1.133 schwarze 2695: if (roff_evalnum(r, ln, val, NULL, &iv, ROFFNUM_SCALE))
1.77 schwarze 2696: roff_setreg(r, key, iv, sign);
1.1 schwarze 2697:
1.76 schwarze 2698: return(ROFF_IGN);
2699: }
2700:
2701: static enum rofferr
2702: roff_rr(ROFF_ARGS)
2703: {
2704: struct roffreg *reg, **prev;
1.85 schwarze 2705: char *name, *cp;
2706: size_t namesz;
1.76 schwarze 2707:
1.110 schwarze 2708: name = cp = buf->buf + pos;
2709: if (*name == '\0')
1.85 schwarze 2710: return(ROFF_IGN);
2711: namesz = roff_getname(r, &cp, ln, pos);
2712: name[namesz] = '\0';
1.76 schwarze 2713:
2714: prev = &r->regtab;
2715: while (1) {
2716: reg = *prev;
1.110 schwarze 2717: if (reg == NULL || !strcmp(name, reg->key.p))
1.76 schwarze 2718: break;
2719: prev = ®->next;
2720: }
1.110 schwarze 2721: if (reg != NULL) {
1.76 schwarze 2722: *prev = reg->next;
2723: free(reg->key.p);
2724: free(reg);
2725: }
1.29 schwarze 2726: return(ROFF_IGN);
2727: }
2728:
1.138 schwarze 2729: /* --- handler functions for roff requests -------------------------------- */
2730:
1.29 schwarze 2731: static enum rofferr
2732: roff_rm(ROFF_ARGS)
2733: {
2734: const char *name;
2735: char *cp;
1.85 schwarze 2736: size_t namesz;
1.29 schwarze 2737:
1.110 schwarze 2738: cp = buf->buf + pos;
2739: while (*cp != '\0') {
1.85 schwarze 2740: name = cp;
1.110 schwarze 2741: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.85 schwarze 2742: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.110 schwarze 2743: if (name[namesz] == '\\')
1.85 schwarze 2744: break;
1.29 schwarze 2745: }
1.51 schwarze 2746: return(ROFF_IGN);
2747: }
2748:
2749: static enum rofferr
2750: roff_it(ROFF_ARGS)
2751: {
2752: int iv;
2753:
2754: /* Parse the number of lines. */
1.133 schwarze 2755:
2756: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.95 schwarze 2757: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.110 schwarze 2758: ln, ppos, buf->buf + 1);
1.51 schwarze 2759: return(ROFF_IGN);
2760: }
2761:
1.134 schwarze 2762: while (isspace((unsigned char)buf->buf[pos]))
2763: pos++;
2764:
2765: /*
2766: * Arm the input line trap.
2767: * Special-casing "an-trap" is an ugly workaround to cope
2768: * with DocBook stupidly fiddling with man(7) internals.
2769: */
1.133 schwarze 2770:
1.51 schwarze 2771: roffit_lines = iv;
1.134 schwarze 2772: roffit_macro = mandoc_strdup(iv != 1 ||
2773: strcmp(buf->buf + pos, "an-trap") ?
2774: buf->buf + pos : "br");
1.2 schwarze 2775: return(ROFF_IGN);
1.47 schwarze 2776: }
2777:
2778: static enum rofferr
2779: roff_Dd(ROFF_ARGS)
2780: {
2781: const char *const *cp;
2782:
1.99 schwarze 2783: if ((r->options & (MPARSE_MDOC | MPARSE_QUICK)) == 0)
1.47 schwarze 2784: for (cp = __mdoc_reserved; *cp; cp++)
2785: roff_setstr(r, *cp, NULL, 0);
2786:
1.99 schwarze 2787: if (r->format == 0)
2788: r->format = MPARSE_MDOC;
2789:
1.47 schwarze 2790: return(ROFF_CONT);
2791: }
2792:
2793: static enum rofferr
2794: roff_TH(ROFF_ARGS)
2795: {
2796: const char *const *cp;
2797:
1.99 schwarze 2798: if ((r->options & MPARSE_QUICK) == 0)
1.47 schwarze 2799: for (cp = __man_reserved; *cp; cp++)
2800: roff_setstr(r, *cp, NULL, 0);
2801:
1.99 schwarze 2802: if (r->format == 0)
2803: r->format = MPARSE_MAN;
2804:
1.47 schwarze 2805: return(ROFF_CONT);
1.14 schwarze 2806: }
2807:
2808: static enum rofferr
1.27 schwarze 2809: roff_TE(ROFF_ARGS)
2810: {
2811:
2812: if (NULL == r->tbl)
1.94 schwarze 2813: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2814: ln, ppos, "TE");
1.130 schwarze 2815: else if ( ! tbl_end(&r->tbl)) {
2816: free(buf->buf);
2817: buf->buf = mandoc_strdup(".sp");
2818: buf->sz = 4;
2819: return(ROFF_REPARSE);
2820: }
1.27 schwarze 2821: return(ROFF_IGN);
2822: }
2823:
2824: static enum rofferr
2825: roff_T_(ROFF_ARGS)
2826: {
2827:
2828: if (NULL == r->tbl)
1.94 schwarze 2829: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2830: ln, ppos, "T&");
1.27 schwarze 2831: else
2832: tbl_restart(ppos, ln, r->tbl);
2833:
2834: return(ROFF_IGN);
2835: }
2836:
1.102 schwarze 2837: /*
2838: * Handle in-line equation delimiters.
2839: */
2840: static enum rofferr
1.110 schwarze 2841: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.41 schwarze 2842: {
1.105 schwarze 2843: char *cp1, *cp2;
2844: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.41 schwarze 2845:
1.102 schwarze 2846: /*
2847: * Outside equations, look for an opening delimiter.
2848: * If we are inside an equation, we already know it is
2849: * in-line, or this function wouldn't have been called;
2850: * so look for a closing delimiter.
2851: */
2852:
1.110 schwarze 2853: cp1 = buf->buf + pos;
1.102 schwarze 2854: cp2 = strchr(cp1, r->eqn == NULL ?
2855: r->last_eqn->odelim : r->last_eqn->cdelim);
2856: if (cp2 == NULL)
2857: return(ROFF_CONT);
2858:
1.105 schwarze 2859: *cp2++ = '\0';
2860: bef_pr = bef_nl = aft_nl = aft_pr = "";
2861:
2862: /* Handle preceding text, protecting whitespace. */
2863:
1.110 schwarze 2864: if (*buf->buf != '\0') {
1.105 schwarze 2865: if (r->eqn == NULL)
2866: bef_pr = "\\&";
2867: bef_nl = "\n";
2868: }
2869:
2870: /*
2871: * Prepare replacing the delimiter with an equation macro
2872: * and drop leading white space from the equation.
2873: */
1.102 schwarze 2874:
1.105 schwarze 2875: if (r->eqn == NULL) {
2876: while (*cp2 == ' ')
2877: cp2++;
2878: mac = ".EQ";
2879: } else
2880: mac = ".EN";
2881:
2882: /* Handle following text, protecting whitespace. */
2883:
2884: if (*cp2 != '\0') {
2885: aft_nl = "\n";
2886: if (r->eqn != NULL)
2887: aft_pr = "\\&";
2888: }
2889:
2890: /* Do the actual replacement. */
2891:
1.110 schwarze 2892: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.105 schwarze 2893: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.110 schwarze 2894: free(buf->buf);
2895: buf->buf = cp1;
1.102 schwarze 2896:
2897: /* Toggle the in-line state of the eqn subsystem. */
2898:
2899: r->eqn_inline = r->eqn == NULL;
2900: return(ROFF_REPARSE);
1.41 schwarze 2901: }
2902:
1.107 schwarze 2903: static enum rofferr
2904: roff_EQ(ROFF_ARGS)
1.32 schwarze 2905: {
1.41 schwarze 2906: struct eqn_node *e;
1.32 schwarze 2907:
1.110 schwarze 2908: assert(r->eqn == NULL);
1.107 schwarze 2909: e = eqn_alloc(ppos, ln, r->parse);
1.32 schwarze 2910:
1.102 schwarze 2911: if (r->last_eqn) {
1.32 schwarze 2912: r->last_eqn->next = e;
1.102 schwarze 2913: e->delim = r->last_eqn->delim;
2914: e->odelim = r->last_eqn->odelim;
2915: e->cdelim = r->last_eqn->cdelim;
2916: } else
1.32 schwarze 2917: r->first_eqn = r->last_eqn = e;
2918:
2919: r->eqn = r->last_eqn = e;
1.41 schwarze 2920:
1.110 schwarze 2921: if (buf->buf[pos] != '\0')
1.107 schwarze 2922: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 2923: ".EQ %s", buf->buf + pos);
1.41 schwarze 2924:
1.32 schwarze 2925: return(ROFF_IGN);
2926: }
2927:
2928: static enum rofferr
2929: roff_EN(ROFF_ARGS)
2930: {
2931:
1.94 schwarze 2932: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
1.32 schwarze 2933: return(ROFF_IGN);
2934: }
2935:
2936: static enum rofferr
1.27 schwarze 2937: roff_TS(ROFF_ARGS)
2938: {
1.49 schwarze 2939: struct tbl_node *tbl;
1.27 schwarze 2940:
2941: if (r->tbl) {
1.94 schwarze 2942: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
2943: ln, ppos, "TS breaks TS");
1.41 schwarze 2944: tbl_end(&r->tbl);
1.27 schwarze 2945: }
2946:
1.49 schwarze 2947: tbl = tbl_alloc(ppos, ln, r->parse);
1.27 schwarze 2948:
2949: if (r->last_tbl)
1.49 schwarze 2950: r->last_tbl->next = tbl;
1.27 schwarze 2951: else
1.49 schwarze 2952: r->first_tbl = r->last_tbl = tbl;
1.27 schwarze 2953:
1.49 schwarze 2954: r->tbl = r->last_tbl = tbl;
1.27 schwarze 2955: return(ROFF_IGN);
1.123 schwarze 2956: }
2957:
2958: static enum rofferr
2959: roff_brp(ROFF_ARGS)
2960: {
2961:
2962: buf->buf[pos - 1] = '\0';
2963: return(ROFF_CONT);
1.27 schwarze 2964: }
2965:
2966: static enum rofferr
1.48 schwarze 2967: roff_cc(ROFF_ARGS)
2968: {
2969: const char *p;
2970:
1.110 schwarze 2971: p = buf->buf + pos;
1.48 schwarze 2972:
1.110 schwarze 2973: if (*p == '\0' || (r->control = *p++) == '.')
1.48 schwarze 2974: r->control = 0;
2975:
1.110 schwarze 2976: if (*p != '\0')
1.132 schwarze 2977: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
2978: ln, p - buf->buf, "cc ... %s", p);
1.48 schwarze 2979:
2980: return(ROFF_IGN);
2981: }
2982:
2983: static enum rofferr
1.42 schwarze 2984: roff_tr(ROFF_ARGS)
2985: {
2986: const char *p, *first, *second;
2987: size_t fsz, ssz;
2988: enum mandoc_esc esc;
2989:
1.110 schwarze 2990: p = buf->buf + pos;
1.42 schwarze 2991:
1.110 schwarze 2992: if (*p == '\0') {
1.132 schwarze 2993: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.42 schwarze 2994: return(ROFF_IGN);
2995: }
2996:
1.110 schwarze 2997: while (*p != '\0') {
1.42 schwarze 2998: fsz = ssz = 1;
2999:
3000: first = p++;
1.110 schwarze 3001: if (*first == '\\') {
1.42 schwarze 3002: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3003: if (esc == ESCAPE_ERROR) {
1.92 schwarze 3004: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 3005: ln, (int)(p - buf->buf), first);
1.42 schwarze 3006: return(ROFF_IGN);
3007: }
3008: fsz = (size_t)(p - first);
3009: }
3010:
3011: second = p++;
1.110 schwarze 3012: if (*second == '\\') {
1.42 schwarze 3013: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3014: if (esc == ESCAPE_ERROR) {
1.92 schwarze 3015: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 3016: ln, (int)(p - buf->buf), second);
1.42 schwarze 3017: return(ROFF_IGN);
3018: }
3019: ssz = (size_t)(p - second);
1.110 schwarze 3020: } else if (*second == '\0') {
1.132 schwarze 3021: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
3022: ln, first - buf->buf, "tr %s", first);
1.42 schwarze 3023: second = " ";
3024: p--;
3025: }
3026:
3027: if (fsz > 1) {
1.80 schwarze 3028: roff_setstrn(&r->xmbtab, first, fsz,
3029: second, ssz, 0);
1.42 schwarze 3030: continue;
3031: }
3032:
1.110 schwarze 3033: if (r->xtab == NULL)
1.80 schwarze 3034: r->xtab = mandoc_calloc(128,
3035: sizeof(struct roffstr));
1.42 schwarze 3036:
3037: free(r->xtab[(int)*first].p);
3038: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3039: r->xtab[(int)*first].sz = ssz;
3040: }
3041:
3042: return(ROFF_IGN);
3043: }
3044:
3045: static enum rofferr
1.14 schwarze 3046: roff_so(ROFF_ARGS)
3047: {
1.121 schwarze 3048: char *name, *cp;
1.15 schwarze 3049:
1.110 schwarze 3050: name = buf->buf + pos;
1.97 schwarze 3051: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.14 schwarze 3052:
1.22 schwarze 3053: /*
3054: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3055: * opening anything that's not in our cwd or anything beneath
3056: * it. Thus, explicitly disallow traversing up the file-system
3057: * or using absolute paths.
3058: */
3059:
1.110 schwarze 3060: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.83 schwarze 3061: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
3062: ".so %s", name);
1.121 schwarze 3063: buf->sz = mandoc_asprintf(&cp,
3064: ".sp\nSee the file %s.\n.sp", name) + 1;
3065: free(buf->buf);
3066: buf->buf = cp;
3067: *offs = 0;
3068: return(ROFF_REPARSE);
1.14 schwarze 3069: }
3070:
3071: *offs = pos;
3072: return(ROFF_SO);
1.7 schwarze 3073: }
3074:
1.138 schwarze 3075: /* --- user defined strings and macros ------------------------------------ */
3076:
1.16 schwarze 3077: static enum rofferr
3078: roff_userdef(ROFF_ARGS)
1.12 schwarze 3079: {
1.135 schwarze 3080: const char *arg[9], *ap;
1.16 schwarze 3081: char *cp, *n1, *n2;
1.146 schwarze 3082: int i, ib, ie;
1.135 schwarze 3083: size_t asz, rsz;
1.12 schwarze 3084:
1.16 schwarze 3085: /*
3086: * Collect pointers to macro argument strings
1.61 schwarze 3087: * and NUL-terminate them.
1.16 schwarze 3088: */
1.135 schwarze 3089:
1.145 schwarze 3090: r->argc = 0;
1.110 schwarze 3091: cp = buf->buf + pos;
1.145 schwarze 3092: for (i = 0; i < 9; i++) {
3093: if (*cp == '\0')
3094: arg[i] = "";
3095: else {
3096: arg[i] = mandoc_getarg(r->parse, &cp, ln, &pos);
3097: r->argc = i + 1;
3098: }
3099: }
1.16 schwarze 3100:
3101: /*
3102: * Expand macro arguments.
1.12 schwarze 3103: */
1.135 schwarze 3104:
3105: buf->sz = strlen(r->current_string) + 1;
3106: n1 = cp = mandoc_malloc(buf->sz);
3107: memcpy(n1, r->current_string, buf->sz);
3108: while (*cp != '\0') {
3109:
3110: /* Scan ahead for the next argument invocation. */
3111:
3112: if (*cp++ != '\\')
3113: continue;
3114: if (*cp++ != '$')
3115: continue;
1.146 schwarze 3116: if (*cp == '*') { /* \\$* inserts all arguments */
3117: ib = 0;
3118: ie = r->argc - 1;
3119: } else { /* \\$1 .. \\$9 insert one argument */
3120: ib = ie = *cp - '1';
3121: if (ib < 0 || ib > 8)
3122: continue;
3123: }
1.135 schwarze 3124: cp -= 2;
3125:
3126: /*
3127: * Determine the size of the expanded argument,
3128: * taking escaping of quotes into account.
3129: */
3130:
1.146 schwarze 3131: asz = ie > ib ? ie - ib : 0; /* for blanks */
3132: for (i = ib; i <= ie; i++) {
3133: for (ap = arg[i]; *ap != '\0'; ap++) {
3134: asz++;
3135: if (*ap == '"')
3136: asz += 3;
3137: }
1.135 schwarze 3138: }
3139: if (asz != 3) {
3140:
3141: /*
3142: * Determine the size of the rest of the
3143: * unexpanded macro, including the NUL.
3144: */
3145:
3146: rsz = buf->sz - (cp - n1) - 3;
3147:
3148: /*
3149: * When shrinking, move before
3150: * releasing the storage.
3151: */
3152:
3153: if (asz < 3)
3154: memmove(cp + asz, cp + 3, rsz);
3155:
3156: /*
3157: * Resize the storage for the macro
3158: * and readjust the parse pointer.
3159: */
3160:
3161: buf->sz += asz - 3;
3162: n2 = mandoc_realloc(n1, buf->sz);
3163: cp = n2 + (cp - n1);
3164: n1 = n2;
3165:
3166: /*
3167: * When growing, make room
3168: * for the expanded argument.
3169: */
3170:
3171: if (asz > 3)
3172: memmove(cp + asz, cp + 3, rsz);
3173: }
3174:
3175: /* Copy the expanded argument, escaping quotes. */
3176:
3177: n2 = cp;
1.146 schwarze 3178: for (i = ib; i <= ie; i++) {
3179: for (ap = arg[i]; *ap != '\0'; ap++) {
3180: if (*ap == '"') {
3181: memcpy(n2, "\\(dq", 4);
3182: n2 += 4;
3183: } else
3184: *n2++ = *ap;
3185: }
3186: if (i < ie)
3187: *n2++ = ' ';
1.16 schwarze 3188: }
1.12 schwarze 3189: }
3190:
1.16 schwarze 3191: /*
3192: * Replace the macro invocation
3193: * by the expanded macro.
3194: */
1.135 schwarze 3195:
1.110 schwarze 3196: free(buf->buf);
3197: buf->buf = n1;
1.120 schwarze 3198: *offs = 0;
1.16 schwarze 3199:
1.110 schwarze 3200: return(buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
1.16 schwarze 3201: ROFF_REPARSE : ROFF_APPEND);
1.12 schwarze 3202: }
1.28 schwarze 3203:
1.85 schwarze 3204: static size_t
1.28 schwarze 3205: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3206: {
3207: char *name, *cp;
1.85 schwarze 3208: size_t namesz;
1.28 schwarze 3209:
3210: name = *cpp;
3211: if ('\0' == *name)
1.85 schwarze 3212: return(0);
1.28 schwarze 3213:
1.85 schwarze 3214: /* Read until end of name and terminate it with NUL. */
3215: for (cp = name; 1; cp++) {
3216: if ('\0' == *cp || ' ' == *cp) {
3217: namesz = cp - name;
3218: break;
3219: }
1.28 schwarze 3220: if ('\\' != *cp)
3221: continue;
1.88 schwarze 3222: namesz = cp - name;
3223: if ('{' == cp[1] || '}' == cp[1])
3224: break;
1.28 schwarze 3225: cp++;
3226: if ('\\' == *cp)
3227: continue;
1.97 schwarze 3228: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3229: "%.*s", (int)(cp - name + 1), name);
1.85 schwarze 3230: mandoc_escape((const char **)&cp, NULL, NULL);
3231: break;
1.28 schwarze 3232: }
3233:
3234: /* Read past spaces. */
3235: while (' ' == *cp)
3236: cp++;
3237:
3238: *cpp = cp;
1.85 schwarze 3239: return(namesz);
1.28 schwarze 3240: }
3241:
1.16 schwarze 3242: /*
3243: * Store *string into the user-defined string called *name.
3244: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.66 schwarze 3245: * append == 0: replace mode
3246: * append == 1: single-line append mode
3247: * append == 2: multiline append mode, append '\n' after each call
1.16 schwarze 3248: */
1.8 schwarze 3249: static void
1.16 schwarze 3250: roff_setstr(struct roff *r, const char *name, const char *string,
1.66 schwarze 3251: int append)
1.7 schwarze 3252: {
1.42 schwarze 3253:
3254: roff_setstrn(&r->strtab, name, strlen(name), string,
1.80 schwarze 3255: string ? strlen(string) : 0, append);
1.42 schwarze 3256: }
3257:
3258: static void
3259: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.66 schwarze 3260: const char *string, size_t stringsz, int append)
1.42 schwarze 3261: {
3262: struct roffkv *n;
3263: char *c;
3264: int i;
3265: size_t oldch, newch;
1.7 schwarze 3266:
1.16 schwarze 3267: /* Search for an existing string with the same name. */
1.42 schwarze 3268: n = *r;
3269:
1.84 schwarze 3270: while (n && (namesz != n->key.sz ||
3271: strncmp(n->key.p, name, namesz)))
1.7 schwarze 3272: n = n->next;
1.8 schwarze 3273:
3274: if (NULL == n) {
1.16 schwarze 3275: /* Create a new string table entry. */
1.42 schwarze 3276: n = mandoc_malloc(sizeof(struct roffkv));
3277: n->key.p = mandoc_strndup(name, namesz);
3278: n->key.sz = namesz;
3279: n->val.p = NULL;
3280: n->val.sz = 0;
3281: n->next = *r;
3282: *r = n;
1.66 schwarze 3283: } else if (0 == append) {
1.42 schwarze 3284: free(n->val.p);
3285: n->val.p = NULL;
3286: n->val.sz = 0;
1.16 schwarze 3287: }
3288:
3289: if (NULL == string)
3290: return;
3291:
3292: /*
3293: * One additional byte for the '\n' in multiline mode,
3294: * and one for the terminating '\0'.
3295: */
1.66 schwarze 3296: newch = stringsz + (1 < append ? 2u : 1u);
1.42 schwarze 3297:
3298: if (NULL == n->val.p) {
3299: n->val.p = mandoc_malloc(newch);
3300: *n->val.p = '\0';
1.16 schwarze 3301: oldch = 0;
3302: } else {
1.42 schwarze 3303: oldch = n->val.sz;
3304: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.16 schwarze 3305: }
3306:
3307: /* Skip existing content in the destination buffer. */
1.42 schwarze 3308: c = n->val.p + (int)oldch;
1.16 schwarze 3309:
3310: /* Append new content to the destination buffer. */
1.42 schwarze 3311: i = 0;
3312: while (i < (int)stringsz) {
1.16 schwarze 3313: /*
3314: * Rudimentary roff copy mode:
3315: * Handle escaped backslashes.
3316: */
1.42 schwarze 3317: if ('\\' == string[i] && '\\' == string[i + 1])
3318: i++;
3319: *c++ = string[i++];
1.16 schwarze 3320: }
1.8 schwarze 3321:
1.16 schwarze 3322: /* Append terminating bytes. */
1.66 schwarze 3323: if (1 < append)
1.16 schwarze 3324: *c++ = '\n';
1.42 schwarze 3325:
1.16 schwarze 3326: *c = '\0';
1.42 schwarze 3327: n->val.sz = (int)(c - n->val.p);
1.7 schwarze 3328: }
3329:
1.8 schwarze 3330: static const char *
3331: roff_getstrn(const struct roff *r, const char *name, size_t len)
1.7 schwarze 3332: {
1.42 schwarze 3333: const struct roffkv *n;
1.64 schwarze 3334: int i;
1.7 schwarze 3335:
1.42 schwarze 3336: for (n = r->strtab; n; n = n->next)
1.80 schwarze 3337: if (0 == strncmp(name, n->key.p, len) &&
3338: '\0' == n->key.p[(int)len])
1.42 schwarze 3339: return(n->val.p);
1.64 schwarze 3340:
3341: for (i = 0; i < PREDEFS_MAX; i++)
3342: if (0 == strncmp(name, predefs[i].name, len) &&
3343: '\0' == predefs[i].name[(int)len])
3344: return(predefs[i].str);
1.8 schwarze 3345:
1.42 schwarze 3346: return(NULL);
1.7 schwarze 3347: }
3348:
1.8 schwarze 3349: static void
1.42 schwarze 3350: roff_freestr(struct roffkv *r)
1.7 schwarze 3351: {
1.42 schwarze 3352: struct roffkv *n, *nn;
1.7 schwarze 3353:
1.42 schwarze 3354: for (n = r; n; n = nn) {
3355: free(n->key.p);
3356: free(n->val.p);
1.7 schwarze 3357: nn = n->next;
3358: free(n);
3359: }
1.27 schwarze 3360: }
1.138 schwarze 3361:
3362: /* --- accessors and utility functions ------------------------------------ */
1.27 schwarze 3363:
3364: const struct tbl_span *
3365: roff_span(const struct roff *r)
3366: {
1.80 schwarze 3367:
1.27 schwarze 3368: return(r->tbl ? tbl_span(r->tbl) : NULL);
1.32 schwarze 3369: }
3370:
3371: const struct eqn *
3372: roff_eqn(const struct roff *r)
3373: {
1.80 schwarze 3374:
1.32 schwarze 3375: return(r->last_eqn ? &r->last_eqn->eqn : NULL);
1.42 schwarze 3376: }
3377:
3378: /*
3379: * Duplicate an input string, making the appropriate character
3380: * conversations (as stipulated by `tr') along the way.
3381: * Returns a heap-allocated string with all the replacements made.
3382: */
3383: char *
3384: roff_strdup(const struct roff *r, const char *p)
3385: {
3386: const struct roffkv *cp;
3387: char *res;
3388: const char *pp;
3389: size_t ssz, sz;
3390: enum mandoc_esc esc;
3391:
3392: if (NULL == r->xmbtab && NULL == r->xtab)
3393: return(mandoc_strdup(p));
3394: else if ('\0' == *p)
3395: return(mandoc_strdup(""));
3396:
3397: /*
3398: * Step through each character looking for term matches
3399: * (remember that a `tr' can be invoked with an escape, which is
3400: * a glyph but the escape is multi-character).
3401: * We only do this if the character hash has been initialised
3402: * and the string is >0 length.
3403: */
3404:
3405: res = NULL;
3406: ssz = 0;
3407:
3408: while ('\0' != *p) {
3409: if ('\\' != *p && r->xtab && r->xtab[(int)*p].p) {
3410: sz = r->xtab[(int)*p].sz;
3411: res = mandoc_realloc(res, ssz + sz + 1);
3412: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3413: ssz += sz;
3414: p++;
3415: continue;
3416: } else if ('\\' != *p) {
3417: res = mandoc_realloc(res, ssz + 2);
3418: res[ssz++] = *p++;
3419: continue;
3420: }
3421:
3422: /* Search for term matches. */
3423: for (cp = r->xmbtab; cp; cp = cp->next)
3424: if (0 == strncmp(p, cp->key.p, cp->key.sz))
3425: break;
3426:
3427: if (NULL != cp) {
3428: /*
3429: * A match has been found.
3430: * Append the match to the array and move
3431: * forward by its keysize.
3432: */
1.80 schwarze 3433: res = mandoc_realloc(res,
3434: ssz + cp->val.sz + 1);
1.42 schwarze 3435: memcpy(res + ssz, cp->val.p, cp->val.sz);
3436: ssz += cp->val.sz;
3437: p += (int)cp->key.sz;
3438: continue;
3439: }
3440:
3441: /*
3442: * Handle escapes carefully: we need to copy
3443: * over just the escape itself, or else we might
3444: * do replacements within the escape itself.
3445: * Make sure to pass along the bogus string.
3446: */
3447: pp = p++;
3448: esc = mandoc_escape(&p, NULL, NULL);
3449: if (ESCAPE_ERROR == esc) {
3450: sz = strlen(pp);
3451: res = mandoc_realloc(res, ssz + sz + 1);
3452: memcpy(res + ssz, pp, sz);
3453: break;
3454: }
1.80 schwarze 3455: /*
3456: * We bail out on bad escapes.
1.42 schwarze 3457: * No need to warn: we already did so when
3458: * roff_res() was called.
3459: */
3460: sz = (int)(p - pp);
3461: res = mandoc_realloc(res, ssz + sz + 1);
3462: memcpy(res + ssz, pp, sz);
3463: ssz += sz;
3464: }
3465:
3466: res[(int)ssz] = '\0';
3467: return(res);
1.99 schwarze 3468: }
3469:
3470: int
3471: roff_getformat(const struct roff *r)
3472: {
3473:
3474: return(r->format);
1.48 schwarze 3475: }
3476:
3477: /*
1.80 schwarze 3478: * Find out whether a line is a macro line or not.
1.48 schwarze 3479: * If it is, adjust the current position and return one; if it isn't,
3480: * return zero and don't change the current position.
3481: * If the control character has been set with `.cc', then let that grain
3482: * precedence.
3483: * This is slighly contrary to groff, where using the non-breaking
3484: * control character when `cc' has been invoked will cause the
3485: * non-breaking macro contents to be printed verbatim.
3486: */
3487: int
3488: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
3489: {
3490: int pos;
3491:
3492: pos = *ppos;
3493:
3494: if (0 != r->control && cp[pos] == r->control)
3495: pos++;
3496: else if (0 != r->control)
3497: return(0);
3498: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
3499: pos += 2;
3500: else if ('.' == cp[pos] || '\'' == cp[pos])
3501: pos++;
3502: else
3503: return(0);
3504:
3505: while (' ' == cp[pos] || '\t' == cp[pos])
3506: pos++;
3507:
3508: *ppos = pos;
3509: return(1);
1.1 schwarze 3510: }