Annotation of src/usr.bin/mandoc/roff.c, Revision 1.141
1.141 ! schwarze 1: /* $OpenBSD: roff.c,v 1.140 2015/04/19 14:57:16 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 */
1.96 schwarze 336: char control; /* control character */
1.1 schwarze 337: };
338:
339: struct roffnode {
340: enum rofft tok; /* type of node */
341: struct roffnode *parent; /* up one in stack */
342: int line; /* parse line */
343: int col; /* parse col */
1.16 schwarze 344: char *name; /* node name, e.g. macro name */
1.2 schwarze 345: char *end; /* end-rules: custom token */
346: int endspan; /* end-rules: next-line or infty */
1.71 schwarze 347: int rule; /* current evaluation rule */
1.1 schwarze 348: };
349:
350: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
351: enum rofft tok, /* tok of macro */ \
1.110 schwarze 352: struct buf *buf, /* input buffer */ \
1.1 schwarze 353: int ln, /* parse line */ \
1.2 schwarze 354: int ppos, /* original pos in buffer */ \
355: int pos, /* current pos in buffer */ \
356: int *offs /* reset offset of buffer data */
1.1 schwarze 357:
358: typedef enum rofferr (*roffproc)(ROFF_ARGS);
359:
360: struct roffmac {
361: const char *name; /* macro name */
1.2 schwarze 362: roffproc proc; /* process new macro */
363: roffproc text; /* process as child text of macro */
364: roffproc sub; /* process as child of macro */
365: int flags;
366: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.3 schwarze 367: struct roffmac *next;
1.1 schwarze 368: };
369:
1.37 schwarze 370: struct predef {
371: const char *name; /* predefined input name */
372: const char *str; /* replacement symbol */
373: };
374:
375: #define PREDEF(__name, __str) \
376: { (__name), (__str) },
377:
1.138 schwarze 378: /* --- function prototypes ------------------------------------------------ */
379:
1.42 schwarze 380: static enum rofft roffhash_find(const char *, size_t);
381: static void roffhash_init(void);
382: static void roffnode_cleanscope(struct roff *);
383: static void roffnode_pop(struct roff *);
384: static void roffnode_push(struct roff *, enum rofft,
385: const char *, int, int);
1.2 schwarze 386: static enum rofferr roff_block(ROFF_ARGS);
387: static enum rofferr roff_block_text(ROFF_ARGS);
388: static enum rofferr roff_block_sub(ROFF_ARGS);
1.123 schwarze 389: static enum rofferr roff_brp(ROFF_ARGS);
1.2 schwarze 390: static enum rofferr roff_cblock(ROFF_ARGS);
1.48 schwarze 391: static enum rofferr roff_cc(ROFF_ARGS);
1.68 schwarze 392: static void roff_ccond(struct roff *, int, int);
1.2 schwarze 393: static enum rofferr roff_cond(ROFF_ARGS);
394: static enum rofferr roff_cond_text(ROFF_ARGS);
395: static enum rofferr roff_cond_sub(ROFF_ARGS);
1.7 schwarze 396: static enum rofferr roff_ds(ROFF_ARGS);
1.110 schwarze 397: static enum rofferr roff_eqndelim(struct roff *, struct buf *, int);
1.106 schwarze 398: static int roff_evalcond(struct roff *r, int,
399: const char *, int *);
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);
1.65 schwarze 413: static int roff_getregro(const char *name);
1.80 schwarze 414: static const char *roff_getstrn(const struct roff *,
1.8 schwarze 415: const char *, size_t);
1.123 schwarze 416: static enum rofferr roff_insec(ROFF_ARGS);
1.51 schwarze 417: static enum rofferr roff_it(ROFF_ARGS);
1.21 schwarze 418: static enum rofferr roff_line_ignore(ROFF_ARGS);
1.137 schwarze 419: static void roff_man_alloc1(struct roff_man *);
420: static void roff_man_free1(struct roff_man *);
1.6 schwarze 421: static enum rofferr roff_nr(ROFF_ARGS);
1.87 schwarze 422: static enum rofft roff_parse(struct roff *, char *, int *,
423: int, int);
1.110 schwarze 424: static enum rofferr roff_parsetext(struct buf *, int, int *);
425: static enum rofferr roff_res(struct roff *, struct buf *, int, int);
1.29 schwarze 426: static enum rofferr roff_rm(ROFF_ARGS);
1.76 schwarze 427: static enum rofferr roff_rr(ROFF_ARGS);
1.8 schwarze 428: static void roff_setstr(struct roff *,
1.16 schwarze 429: const char *, const char *, int);
1.80 schwarze 430: static void roff_setstrn(struct roffkv **, const char *,
1.42 schwarze 431: size_t, const char *, size_t, int);
1.14 schwarze 432: static enum rofferr roff_so(ROFF_ARGS);
1.42 schwarze 433: static enum rofferr roff_tr(ROFF_ARGS);
1.47 schwarze 434: static enum rofferr roff_Dd(ROFF_ARGS);
435: static enum rofferr roff_TH(ROFF_ARGS);
1.27 schwarze 436: static enum rofferr roff_TE(ROFF_ARGS);
437: static enum rofferr roff_TS(ROFF_ARGS);
1.32 schwarze 438: static enum rofferr roff_EQ(ROFF_ARGS);
439: static enum rofferr roff_EN(ROFF_ARGS);
1.27 schwarze 440: static enum rofferr roff_T_(ROFF_ARGS);
1.123 schwarze 441: static enum rofferr roff_unsupp(ROFF_ARGS);
1.16 schwarze 442: static enum rofferr roff_userdef(ROFF_ARGS);
1.1 schwarze 443:
1.138 schwarze 444: /* --- constant data ------------------------------------------------------ */
445:
1.42 schwarze 446: /* See roffhash_find() */
1.3 schwarze 447:
448: #define ASCII_HI 126
449: #define ASCII_LO 33
450: #define HASHWIDTH (ASCII_HI - ASCII_LO + 1)
451:
1.133 schwarze 452: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
453: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
454:
1.3 schwarze 455: static struct roffmac *hash[HASHWIDTH];
456:
457: static struct roffmac roffs[ROFF_MAX] = {
1.123 schwarze 458: { "ab", roff_unsupp, NULL, NULL, 0, NULL },
1.21 schwarze 459: { "ad", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 460: { "af", roff_line_ignore, NULL, NULL, 0, NULL },
461: { "aln", roff_unsupp, NULL, NULL, 0, NULL },
462: { "als", roff_unsupp, NULL, NULL, 0, NULL },
1.3 schwarze 463: { "am", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.123 schwarze 464: { "am1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.3 schwarze 465: { "ami", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.123 schwarze 466: { "ami1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.66 schwarze 467: { "as", roff_ds, NULL, NULL, 0, NULL },
1.123 schwarze 468: { "as1", roff_ds, NULL, NULL, 0, NULL },
469: { "asciify", roff_unsupp, NULL, NULL, 0, NULL },
470: { "backtrace", roff_line_ignore, NULL, NULL, 0, NULL },
471: { "bd", roff_line_ignore, NULL, NULL, 0, NULL },
472: { "bleedat", roff_line_ignore, NULL, NULL, 0, NULL },
473: { "blm", roff_unsupp, NULL, NULL, 0, NULL },
474: { "box", roff_unsupp, NULL, NULL, 0, NULL },
475: { "boxa", roff_unsupp, NULL, NULL, 0, NULL },
476: { "bp", roff_line_ignore, NULL, NULL, 0, NULL },
477: { "BP", roff_unsupp, NULL, NULL, 0, NULL },
478: { "break", roff_unsupp, NULL, NULL, 0, NULL },
479: { "breakchar", roff_line_ignore, NULL, NULL, 0, NULL },
480: { "brnl", roff_line_ignore, NULL, NULL, 0, NULL },
481: { "brp", roff_brp, NULL, NULL, 0, NULL },
482: { "brpnl", roff_line_ignore, NULL, NULL, 0, NULL },
483: { "c2", roff_unsupp, NULL, NULL, 0, NULL },
1.48 schwarze 484: { "cc", roff_cc, NULL, NULL, 0, NULL },
1.67 schwarze 485: { "ce", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 486: { "cf", roff_insec, NULL, NULL, 0, NULL },
487: { "cflags", roff_line_ignore, NULL, NULL, 0, NULL },
488: { "ch", roff_line_ignore, NULL, NULL, 0, NULL },
489: { "char", roff_unsupp, NULL, NULL, 0, NULL },
490: { "chop", roff_unsupp, NULL, NULL, 0, NULL },
491: { "class", roff_line_ignore, NULL, NULL, 0, NULL },
492: { "close", roff_insec, NULL, NULL, 0, NULL },
493: { "CL", roff_unsupp, NULL, NULL, 0, NULL },
494: { "color", roff_line_ignore, NULL, NULL, 0, NULL },
495: { "composite", roff_unsupp, NULL, NULL, 0, NULL },
496: { "continue", roff_unsupp, NULL, NULL, 0, NULL },
497: { "cp", roff_line_ignore, NULL, NULL, 0, NULL },
498: { "cropat", roff_line_ignore, NULL, NULL, 0, NULL },
499: { "cs", roff_line_ignore, NULL, NULL, 0, NULL },
500: { "cu", roff_line_ignore, NULL, NULL, 0, NULL },
501: { "da", roff_unsupp, NULL, NULL, 0, NULL },
502: { "dch", roff_unsupp, NULL, NULL, 0, NULL },
503: { "Dd", roff_Dd, NULL, NULL, 0, NULL },
1.3 schwarze 504: { "de", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.123 schwarze 505: { "de1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
506: { "defcolor", roff_line_ignore, NULL, NULL, 0, NULL },
1.3 schwarze 507: { "dei", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.123 schwarze 508: { "dei1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
509: { "device", roff_unsupp, NULL, NULL, 0, NULL },
510: { "devicem", roff_unsupp, NULL, NULL, 0, NULL },
511: { "di", roff_unsupp, NULL, NULL, 0, NULL },
512: { "do", roff_unsupp, NULL, NULL, 0, NULL },
1.7 schwarze 513: { "ds", roff_ds, NULL, NULL, 0, NULL },
1.123 schwarze 514: { "ds1", roff_ds, NULL, NULL, 0, NULL },
515: { "dwh", roff_unsupp, NULL, NULL, 0, NULL },
516: { "dt", roff_unsupp, NULL, NULL, 0, NULL },
517: { "ec", roff_unsupp, NULL, NULL, 0, NULL },
518: { "ecr", roff_unsupp, NULL, NULL, 0, NULL },
519: { "ecs", roff_unsupp, NULL, NULL, 0, NULL },
1.3 schwarze 520: { "el", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
1.123 schwarze 521: { "em", roff_unsupp, NULL, NULL, 0, NULL },
522: { "EN", roff_EN, NULL, NULL, 0, NULL },
523: { "eo", roff_unsupp, NULL, NULL, 0, NULL },
524: { "EP", roff_unsupp, NULL, NULL, 0, NULL },
525: { "EQ", roff_EQ, NULL, NULL, 0, NULL },
526: { "errprint", roff_line_ignore, NULL, NULL, 0, NULL },
527: { "ev", roff_unsupp, NULL, NULL, 0, NULL },
528: { "evc", roff_unsupp, NULL, NULL, 0, NULL },
529: { "ex", roff_unsupp, NULL, NULL, 0, NULL },
530: { "fallback", roff_line_ignore, NULL, NULL, 0, NULL },
1.58 schwarze 531: { "fam", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 532: { "fc", roff_unsupp, NULL, NULL, 0, NULL },
533: { "fchar", roff_unsupp, NULL, NULL, 0, NULL },
534: { "fcolor", roff_line_ignore, NULL, NULL, 0, NULL },
535: { "fdeferlig", roff_line_ignore, NULL, NULL, 0, NULL },
536: { "feature", roff_line_ignore, NULL, NULL, 0, NULL },
537: { "fkern", roff_line_ignore, NULL, NULL, 0, NULL },
538: { "fl", roff_line_ignore, NULL, NULL, 0, NULL },
539: { "flig", roff_line_ignore, NULL, NULL, 0, NULL },
540: { "fp", roff_line_ignore, NULL, NULL, 0, NULL },
541: { "fps", roff_line_ignore, NULL, NULL, 0, NULL },
542: { "fschar", roff_unsupp, NULL, NULL, 0, NULL },
543: { "fspacewidth", roff_line_ignore, NULL, NULL, 0, NULL },
544: { "fspecial", roff_line_ignore, NULL, NULL, 0, NULL },
545: { "ftr", roff_line_ignore, NULL, NULL, 0, NULL },
546: { "fzoom", roff_line_ignore, NULL, NULL, 0, NULL },
547: { "gcolor", roff_line_ignore, NULL, NULL, 0, NULL },
548: { "hc", roff_line_ignore, NULL, NULL, 0, NULL },
549: { "hcode", roff_line_ignore, NULL, NULL, 0, NULL },
550: { "hidechar", roff_line_ignore, NULL, NULL, 0, NULL },
551: { "hla", roff_line_ignore, NULL, NULL, 0, NULL },
552: { "hlm", roff_line_ignore, NULL, NULL, 0, NULL },
553: { "hpf", roff_line_ignore, NULL, NULL, 0, NULL },
554: { "hpfa", roff_line_ignore, NULL, NULL, 0, NULL },
555: { "hpfcode", roff_line_ignore, NULL, NULL, 0, NULL },
1.59 schwarze 556: { "hw", roff_line_ignore, NULL, NULL, 0, NULL },
1.21 schwarze 557: { "hy", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 558: { "hylang", roff_line_ignore, NULL, NULL, 0, NULL },
559: { "hylen", roff_line_ignore, NULL, NULL, 0, NULL },
560: { "hym", roff_line_ignore, NULL, NULL, 0, NULL },
561: { "hypp", roff_line_ignore, NULL, NULL, 0, NULL },
562: { "hys", roff_line_ignore, NULL, NULL, 0, NULL },
1.3 schwarze 563: { "ie", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
564: { "if", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
565: { "ig", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.123 schwarze 566: { "index", roff_unsupp, NULL, NULL, 0, NULL },
1.51 schwarze 567: { "it", roff_it, NULL, NULL, 0, NULL },
1.123 schwarze 568: { "itc", roff_unsupp, NULL, NULL, 0, NULL },
569: { "IX", roff_line_ignore, NULL, NULL, 0, NULL },
570: { "kern", roff_line_ignore, NULL, NULL, 0, NULL },
571: { "kernafter", roff_line_ignore, NULL, NULL, 0, NULL },
572: { "kernbefore", roff_line_ignore, NULL, NULL, 0, NULL },
573: { "kernpair", roff_line_ignore, NULL, NULL, 0, NULL },
574: { "lc", roff_unsupp, NULL, NULL, 0, NULL },
575: { "lc_ctype", roff_unsupp, NULL, NULL, 0, NULL },
576: { "lds", roff_unsupp, NULL, NULL, 0, NULL },
577: { "length", roff_unsupp, NULL, NULL, 0, NULL },
578: { "letadj", roff_line_ignore, NULL, NULL, 0, NULL },
579: { "lf", roff_insec, NULL, NULL, 0, NULL },
580: { "lg", roff_line_ignore, NULL, NULL, 0, NULL },
581: { "lhang", roff_line_ignore, NULL, NULL, 0, NULL },
582: { "linetabs", roff_unsupp, NULL, NULL, 0, NULL },
583: { "lnr", roff_unsupp, NULL, NULL, 0, NULL },
584: { "lnrf", roff_unsupp, NULL, NULL, 0, NULL },
585: { "lpfx", roff_unsupp, NULL, NULL, 0, NULL },
586: { "ls", roff_line_ignore, NULL, NULL, 0, NULL },
587: { "lsm", roff_unsupp, NULL, NULL, 0, NULL },
588: { "lt", roff_line_ignore, NULL, NULL, 0, NULL },
589: { "mc", roff_line_ignore, NULL, NULL, 0, NULL },
590: { "mediasize", roff_line_ignore, NULL, NULL, 0, NULL },
591: { "minss", roff_line_ignore, NULL, NULL, 0, NULL },
592: { "mk", roff_line_ignore, NULL, NULL, 0, NULL },
593: { "mso", roff_insec, NULL, NULL, 0, NULL },
1.128 schwarze 594: { "na", roff_line_ignore, NULL, NULL, 0, NULL },
1.21 schwarze 595: { "ne", roff_line_ignore, NULL, NULL, 0, NULL },
596: { "nh", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 597: { "nhychar", roff_line_ignore, NULL, NULL, 0, NULL },
598: { "nm", roff_unsupp, NULL, NULL, 0, NULL },
599: { "nn", roff_unsupp, NULL, NULL, 0, NULL },
600: { "nop", roff_unsupp, NULL, NULL, 0, NULL },
1.14 schwarze 601: { "nr", roff_nr, NULL, NULL, 0, NULL },
1.123 schwarze 602: { "nrf", roff_unsupp, NULL, NULL, 0, NULL },
603: { "nroff", roff_line_ignore, NULL, NULL, 0, NULL },
1.31 schwarze 604: { "ns", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 605: { "nx", roff_insec, NULL, NULL, 0, NULL },
606: { "open", roff_insec, NULL, NULL, 0, NULL },
607: { "opena", roff_insec, NULL, NULL, 0, NULL },
608: { "os", roff_line_ignore, NULL, NULL, 0, NULL },
609: { "output", roff_unsupp, NULL, NULL, 0, NULL },
610: { "padj", roff_line_ignore, NULL, NULL, 0, NULL },
611: { "papersize", roff_line_ignore, NULL, NULL, 0, NULL },
612: { "pc", roff_line_ignore, NULL, NULL, 0, NULL },
613: { "pev", roff_line_ignore, NULL, NULL, 0, NULL },
614: { "pi", roff_insec, NULL, NULL, 0, NULL },
615: { "PI", roff_unsupp, NULL, NULL, 0, NULL },
1.101 schwarze 616: { "pl", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 617: { "pm", roff_line_ignore, NULL, NULL, 0, NULL },
618: { "pn", roff_line_ignore, NULL, NULL, 0, NULL },
619: { "pnr", roff_line_ignore, NULL, NULL, 0, NULL },
620: { "po", roff_line_ignore, NULL, NULL, 0, NULL },
1.31 schwarze 621: { "ps", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 622: { "psbb", roff_unsupp, NULL, NULL, 0, NULL },
1.127 schwarze 623: { "pshape", roff_unsupp, NULL, NULL, 0, NULL },
1.123 schwarze 624: { "pso", roff_insec, NULL, NULL, 0, NULL },
625: { "ptr", roff_line_ignore, NULL, NULL, 0, NULL },
626: { "pvs", roff_line_ignore, NULL, NULL, 0, NULL },
627: { "rchar", roff_unsupp, NULL, NULL, 0, NULL },
628: { "rd", roff_line_ignore, NULL, NULL, 0, NULL },
629: { "recursionlimit", roff_line_ignore, NULL, NULL, 0, NULL },
630: { "return", roff_unsupp, NULL, NULL, 0, NULL },
631: { "rfschar", roff_unsupp, NULL, NULL, 0, NULL },
632: { "rhang", roff_line_ignore, NULL, NULL, 0, NULL },
633: { "rj", roff_line_ignore, NULL, NULL, 0, NULL },
1.29 schwarze 634: { "rm", roff_rm, NULL, NULL, 0, NULL },
1.123 schwarze 635: { "rn", roff_unsupp, NULL, NULL, 0, NULL },
636: { "rnn", roff_unsupp, NULL, NULL, 0, NULL },
1.76 schwarze 637: { "rr", roff_rr, NULL, NULL, 0, NULL },
1.123 schwarze 638: { "rs", roff_line_ignore, NULL, NULL, 0, NULL },
639: { "rt", roff_line_ignore, NULL, NULL, 0, NULL },
640: { "schar", roff_unsupp, NULL, NULL, 0, NULL },
641: { "sentchar", roff_line_ignore, NULL, NULL, 0, NULL },
642: { "shc", roff_line_ignore, NULL, NULL, 0, NULL },
643: { "shift", roff_unsupp, NULL, NULL, 0, NULL },
644: { "sizes", roff_line_ignore, NULL, NULL, 0, NULL },
1.14 schwarze 645: { "so", roff_so, NULL, NULL, 0, NULL },
1.123 schwarze 646: { "spacewidth", roff_line_ignore, NULL, NULL, 0, NULL },
647: { "special", roff_line_ignore, NULL, NULL, 0, NULL },
648: { "spreadwarn", roff_line_ignore, NULL, NULL, 0, NULL },
649: { "ss", roff_line_ignore, NULL, NULL, 0, NULL },
650: { "sty", roff_line_ignore, NULL, NULL, 0, NULL },
651: { "substring", roff_unsupp, NULL, NULL, 0, NULL },
652: { "sv", roff_line_ignore, NULL, NULL, 0, NULL },
653: { "sy", roff_insec, NULL, NULL, 0, NULL },
654: { "T&", roff_T_, NULL, NULL, 0, NULL },
1.127 schwarze 655: { "ta", roff_unsupp, NULL, NULL, 0, NULL },
1.123 schwarze 656: { "tc", roff_unsupp, NULL, NULL, 0, NULL },
657: { "TE", roff_TE, NULL, NULL, 0, NULL },
658: { "TH", roff_TH, NULL, NULL, 0, NULL },
1.127 schwarze 659: { "ti", roff_unsupp, NULL, NULL, 0, NULL },
1.123 schwarze 660: { "tkf", roff_line_ignore, NULL, NULL, 0, NULL },
661: { "tl", roff_unsupp, NULL, NULL, 0, NULL },
662: { "tm", roff_line_ignore, NULL, NULL, 0, NULL },
663: { "tm1", roff_line_ignore, NULL, NULL, 0, NULL },
664: { "tmc", roff_line_ignore, NULL, NULL, 0, NULL },
1.42 schwarze 665: { "tr", roff_tr, NULL, NULL, 0, NULL },
1.123 schwarze 666: { "track", roff_line_ignore, NULL, NULL, 0, NULL },
667: { "transchar", roff_line_ignore, NULL, NULL, 0, NULL },
668: { "trf", roff_insec, NULL, NULL, 0, NULL },
669: { "trimat", roff_line_ignore, NULL, NULL, 0, NULL },
670: { "trin", roff_unsupp, NULL, NULL, 0, NULL },
671: { "trnt", roff_unsupp, NULL, NULL, 0, NULL },
672: { "troff", roff_line_ignore, NULL, NULL, 0, NULL },
1.27 schwarze 673: { "TS", roff_TS, NULL, NULL, 0, NULL },
1.123 schwarze 674: { "uf", roff_line_ignore, NULL, NULL, 0, NULL },
675: { "ul", roff_line_ignore, NULL, NULL, 0, NULL },
676: { "unformat", roff_unsupp, NULL, NULL, 0, NULL },
677: { "unwatch", roff_line_ignore, NULL, NULL, 0, NULL },
678: { "unwatchn", roff_line_ignore, NULL, NULL, 0, NULL },
679: { "vpt", roff_line_ignore, NULL, NULL, 0, NULL },
680: { "vs", roff_line_ignore, NULL, NULL, 0, NULL },
681: { "warn", roff_line_ignore, NULL, NULL, 0, NULL },
682: { "warnscale", roff_line_ignore, NULL, NULL, 0, NULL },
683: { "watch", roff_line_ignore, NULL, NULL, 0, NULL },
684: { "watchlength", roff_line_ignore, NULL, NULL, 0, NULL },
685: { "watchn", roff_line_ignore, NULL, NULL, 0, NULL },
686: { "wh", roff_unsupp, NULL, NULL, 0, NULL },
687: { "while", roff_unsupp, NULL, NULL, 0, NULL },
688: { "write", roff_insec, NULL, NULL, 0, NULL },
689: { "writec", roff_insec, NULL, NULL, 0, NULL },
690: { "writem", roff_insec, NULL, NULL, 0, NULL },
691: { "xflag", roff_line_ignore, NULL, NULL, 0, NULL },
1.3 schwarze 692: { ".", roff_cblock, NULL, NULL, 0, NULL },
1.16 schwarze 693: { NULL, roff_userdef, NULL, NULL, 0, NULL },
1.1 schwarze 694: };
695:
1.73 schwarze 696: /* not currently implemented: Ds em Eq LP Me PP pp Or Rd Sf SH */
1.47 schwarze 697: const char *const __mdoc_reserved[] = {
698: "Ac", "Ad", "An", "Ao", "Ap", "Aq", "Ar", "At",
699: "Bc", "Bd", "Bf", "Bk", "Bl", "Bo", "Bq",
700: "Brc", "Bro", "Brq", "Bsx", "Bt", "Bx",
701: "Cd", "Cm", "Db", "Dc", "Dd", "Dl", "Do", "Dq",
1.73 schwarze 702: "Dt", "Dv", "Dx", "D1",
703: "Ec", "Ed", "Ef", "Ek", "El", "Em",
704: "En", "Eo", "Er", "Es", "Ev", "Ex",
1.47 schwarze 705: "Fa", "Fc", "Fd", "Fl", "Fn", "Fo", "Fr", "Ft", "Fx",
1.73 schwarze 706: "Hf", "Ic", "In", "It", "Lb", "Li", "Lk", "Lp",
707: "Ms", "Mt", "Nd", "Nm", "No", "Ns", "Nx",
1.47 schwarze 708: "Oc", "Oo", "Op", "Os", "Ot", "Ox",
1.73 schwarze 709: "Pa", "Pc", "Pf", "Po", "Pp", "Pq",
710: "Qc", "Ql", "Qo", "Qq", "Re", "Rs", "Rv",
711: "Sc", "Sh", "Sm", "So", "Sq",
1.47 schwarze 712: "Ss", "St", "Sx", "Sy",
713: "Ta", "Tn", "Ud", "Ux", "Va", "Vt", "Xc", "Xo", "Xr",
1.73 schwarze 714: "%A", "%B", "%C", "%D", "%I", "%J", "%N", "%O",
1.47 schwarze 715: "%P", "%Q", "%R", "%T", "%U", "%V",
716: NULL
717: };
718:
1.73 schwarze 719: /* not currently implemented: BT DE DS ME MT PT SY TQ YS */
1.47 schwarze 720: const char *const __man_reserved[] = {
1.73 schwarze 721: "AT", "B", "BI", "BR", "DT",
722: "EE", "EN", "EQ", "EX", "HP", "I", "IB", "IP", "IR",
723: "LP", "OP", "P", "PD", "PP",
724: "R", "RB", "RE", "RI", "RS", "SB", "SH", "SM", "SS",
725: "TE", "TH", "TP", "TS", "T&", "UC", "UE", "UR",
1.47 schwarze 726: NULL
727: };
728:
1.37 schwarze 729: /* Array of injected predefined strings. */
730: #define PREDEFS_MAX 38
731: static const struct predef predefs[PREDEFS_MAX] = {
732: #include "predefs.in"
733: };
734:
1.42 schwarze 735: /* See roffhash_find() */
1.3 schwarze 736: #define ROFF_HASH(p) (p[0] - ASCII_LO)
737:
1.51 schwarze 738: static int roffit_lines; /* number of lines to delay */
739: static char *roffit_macro; /* nil-terminated macro line */
740:
1.80 schwarze 741:
1.138 schwarze 742: /* --- request table ------------------------------------------------------ */
743:
1.3 schwarze 744: static void
1.42 schwarze 745: roffhash_init(void)
1.3 schwarze 746: {
747: struct roffmac *n;
748: int buc, i;
749:
1.16 schwarze 750: for (i = 0; i < (int)ROFF_USERDEF; i++) {
1.3 schwarze 751: assert(roffs[i].name[0] >= ASCII_LO);
752: assert(roffs[i].name[0] <= ASCII_HI);
753:
754: buc = ROFF_HASH(roffs[i].name);
755:
756: if (NULL != (n = hash[buc])) {
757: for ( ; n->next; n = n->next)
758: /* Do nothing. */ ;
759: n->next = &roffs[i];
760: } else
761: hash[buc] = &roffs[i];
762: }
763: }
764:
1.1 schwarze 765: /*
766: * Look up a roff token by its name. Returns ROFF_MAX if no macro by
767: * the nil-terminated string name could be found.
768: */
769: static enum rofft
1.42 schwarze 770: roffhash_find(const char *p, size_t s)
1.1 schwarze 771: {
1.3 schwarze 772: int buc;
773: struct roffmac *n;
1.1 schwarze 774:
1.3 schwarze 775: /*
776: * libroff has an extremely simple hashtable, for the time
777: * being, which simply keys on the first character, which must
778: * be printable, then walks a chain. It works well enough until
779: * optimised.
780: */
781:
782: if (p[0] < ASCII_LO || p[0] > ASCII_HI)
783: return(ROFF_MAX);
784:
785: buc = ROFF_HASH(p);
786:
787: if (NULL == (n = hash[buc]))
788: return(ROFF_MAX);
789: for ( ; n; n = n->next)
1.16 schwarze 790: if (0 == strncmp(n->name, p, s) && '\0' == n->name[(int)s])
1.3 schwarze 791: return((enum rofft)(n - roffs));
1.1 schwarze 792:
793: return(ROFF_MAX);
794: }
795:
1.138 schwarze 796: /* --- stack of request blocks -------------------------------------------- */
797:
1.1 schwarze 798: /*
799: * Pop the current node off of the stack of roff instructions currently
800: * pending.
801: */
802: static void
803: roffnode_pop(struct roff *r)
804: {
805: struct roffnode *p;
806:
1.2 schwarze 807: assert(r->last);
1.80 schwarze 808: p = r->last;
1.2 schwarze 809:
810: r->last = r->last->parent;
1.16 schwarze 811: free(p->name);
812: free(p->end);
1.1 schwarze 813: free(p);
814: }
815:
816: /*
817: * Push a roff node onto the instruction stack. This must later be
818: * removed with roffnode_pop().
819: */
1.11 schwarze 820: static void
1.16 schwarze 821: roffnode_push(struct roff *r, enum rofft tok, const char *name,
822: int line, int col)
1.1 schwarze 823: {
824: struct roffnode *p;
825:
1.11 schwarze 826: p = mandoc_calloc(1, sizeof(struct roffnode));
1.1 schwarze 827: p->tok = tok;
1.16 schwarze 828: if (name)
829: p->name = mandoc_strdup(name);
1.1 schwarze 830: p->parent = r->last;
831: p->line = line;
832: p->col = col;
1.71 schwarze 833: p->rule = p->parent ? p->parent->rule : 0;
1.1 schwarze 834:
835: r->last = p;
836: }
837:
1.138 schwarze 838: /* --- roff parser state data management ---------------------------------- */
839:
1.1 schwarze 840: static void
841: roff_free1(struct roff *r)
842: {
1.49 schwarze 843: struct tbl_node *tbl;
1.32 schwarze 844: struct eqn_node *e;
1.42 schwarze 845: int i;
1.27 schwarze 846:
1.49 schwarze 847: while (NULL != (tbl = r->first_tbl)) {
848: r->first_tbl = tbl->next;
849: tbl_free(tbl);
1.27 schwarze 850: }
851: r->first_tbl = r->last_tbl = r->tbl = NULL;
1.1 schwarze 852:
1.32 schwarze 853: while (NULL != (e = r->first_eqn)) {
854: r->first_eqn = e->next;
855: eqn_free(e);
856: }
857: r->first_eqn = r->last_eqn = r->eqn = NULL;
858:
1.1 schwarze 859: while (r->last)
860: roffnode_pop(r);
1.27 schwarze 861:
1.96 schwarze 862: free (r->rstack);
863: r->rstack = NULL;
864: r->rstacksz = 0;
865: r->rstackpos = -1;
866:
867: roff_freereg(r->regtab);
868: r->regtab = NULL;
869:
1.42 schwarze 870: roff_freestr(r->strtab);
871: roff_freestr(r->xmbtab);
872: r->strtab = r->xmbtab = NULL;
873:
874: if (r->xtab)
875: for (i = 0; i < 128; i++)
876: free(r->xtab[i].p);
877: free(r->xtab);
878: r->xtab = NULL;
1.1 schwarze 879: }
880:
881: void
882: roff_reset(struct roff *r)
883: {
884:
885: roff_free1(r);
1.99 schwarze 886: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.48 schwarze 887: r->control = 0;
1.1 schwarze 888: }
889:
890: void
891: roff_free(struct roff *r)
892: {
893:
894: roff_free1(r);
895: free(r);
896: }
897:
898: struct roff *
1.109 schwarze 899: roff_alloc(struct mparse *parse, const struct mchars *mchars, int options)
1.1 schwarze 900: {
901: struct roff *r;
902:
1.11 schwarze 903: r = mandoc_calloc(1, sizeof(struct roff));
1.35 schwarze 904: r->parse = parse;
1.109 schwarze 905: r->mchars = mchars;
1.72 schwarze 906: r->options = options;
1.99 schwarze 907: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.2 schwarze 908: r->rstackpos = -1;
1.80 schwarze 909:
1.42 schwarze 910: roffhash_init();
1.37 schwarze 911:
1.1 schwarze 912: return(r);
1.137 schwarze 913: }
914:
1.138 schwarze 915: /* --- syntax tree state data management ---------------------------------- */
916:
1.137 schwarze 917: static void
918: roff_man_free1(struct roff_man *man)
919: {
920:
1.138 schwarze 921: if (man->first != NULL)
922: roff_node_delete(man, man->first);
1.137 schwarze 923: free(man->meta.msec);
924: free(man->meta.vol);
925: free(man->meta.os);
926: free(man->meta.arch);
927: free(man->meta.title);
928: free(man->meta.name);
929: free(man->meta.date);
930: }
931:
932: static void
933: roff_man_alloc1(struct roff_man *man)
934: {
935:
936: memset(&man->meta, 0, sizeof(man->meta));
937: man->first = mandoc_calloc(1, sizeof(*man->first));
938: man->first->type = ROFFT_ROOT;
939: man->last = man->first;
940: man->last_es = NULL;
941: man->flags = 0;
942: man->macroset = MACROSET_NONE;
943: man->lastsec = man->lastnamed = SEC_NONE;
944: man->next = ROFF_NEXT_CHILD;
945: }
946:
947: void
948: roff_man_reset(struct roff_man *man)
949: {
950:
951: roff_man_free1(man);
952: roff_man_alloc1(man);
953: }
954:
955: void
956: roff_man_free(struct roff_man *man)
957: {
958:
959: roff_man_free1(man);
960: free(man);
961: }
962:
963: struct roff_man *
964: roff_man_alloc(struct roff *roff, struct mparse *parse,
965: const char *defos, int quick)
966: {
967: struct roff_man *man;
968:
969: man = mandoc_calloc(1, sizeof(*man));
970: man->parse = parse;
971: man->roff = roff;
972: man->defos = defos;
973: man->quick = quick;
974: roff_man_alloc1(man);
975: return(man);
1.1 schwarze 976: }
977:
1.138 schwarze 978: /* --- syntax tree handling ----------------------------------------------- */
979:
980: struct roff_node *
981: roff_node_alloc(struct roff_man *man, int line, int pos,
982: enum roff_type type, int tok)
983: {
984: struct roff_node *n;
985:
986: n = mandoc_calloc(1, sizeof(*n));
987: n->line = line;
988: n->pos = pos;
989: n->tok = tok;
990: n->type = type;
991: n->sec = man->lastsec;
992:
993: if (man->flags & MDOC_SYNOPSIS)
994: n->flags |= MDOC_SYNPRETTY;
995: else
996: n->flags &= ~MDOC_SYNPRETTY;
997: if (man->flags & MDOC_NEWLINE)
998: n->flags |= MDOC_LINE;
999: man->flags &= ~MDOC_NEWLINE;
1000:
1001: return(n);
1002: }
1003:
1004: void
1005: roff_node_append(struct roff_man *man, struct roff_node *n)
1006: {
1007:
1008: switch (man->next) {
1009: case ROFF_NEXT_SIBLING:
1010: man->last->next = n;
1011: n->prev = man->last;
1012: n->parent = man->last->parent;
1013: break;
1014: case ROFF_NEXT_CHILD:
1015: man->last->child = n;
1016: n->parent = man->last;
1017: break;
1018: default:
1019: abort();
1020: /* NOTREACHED */
1021: }
1022: n->parent->nchild++;
1023:
1024: /*
1025: * Copy over the normalised-data pointer of our parent. Not
1026: * everybody has one, but copying a null pointer is fine.
1027: */
1028:
1029: switch (n->type) {
1030: case ROFFT_BODY:
1031: if (n->end != ENDBODY_NOT)
1032: break;
1033: /* FALLTHROUGH */
1034: case ROFFT_TAIL:
1035: /* FALLTHROUGH */
1036: case ROFFT_HEAD:
1037: n->norm = n->parent->norm;
1038: break;
1039: default:
1040: break;
1041: }
1042:
1043: if (man->macroset == MACROSET_MDOC)
1044: mdoc_valid_pre(man, n);
1045:
1046: switch (n->type) {
1047: case ROFFT_HEAD:
1048: assert(n->parent->type == ROFFT_BLOCK);
1049: n->parent->head = n;
1050: break;
1051: case ROFFT_BODY:
1052: if (n->end)
1053: break;
1054: assert(n->parent->type == ROFFT_BLOCK);
1055: n->parent->body = n;
1056: break;
1057: case ROFFT_TAIL:
1058: assert(n->parent->type == ROFFT_BLOCK);
1059: n->parent->tail = n;
1060: break;
1061: default:
1062: break;
1063: }
1064: man->last = n;
1065: }
1066:
1.139 schwarze 1067: void
1068: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
1069: {
1070: struct roff_node *n;
1071:
1072: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
1073: n->string = roff_strdup(man->roff, word);
1074: roff_node_append(man, n);
1075: if (man->macroset == MACROSET_MDOC)
1076: mdoc_valid_post(man);
1077: else
1078: man_valid_post(man);
1079: man->next = ROFF_NEXT_SIBLING;
1080: }
1081:
1082: void
1083: roff_word_append(struct roff_man *man, const char *word)
1084: {
1085: struct roff_node *n;
1086: char *addstr, *newstr;
1087:
1088: n = man->last;
1089: addstr = roff_strdup(man->roff, word);
1090: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
1091: free(addstr);
1092: free(n->string);
1093: n->string = newstr;
1094: man->next = ROFF_NEXT_SIBLING;
1.140 schwarze 1095: }
1096:
1097: void
1098: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
1099: {
1100: struct roff_node *n;
1101:
1102: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
1103: roff_node_append(man, n);
1104: man->next = ROFF_NEXT_CHILD;
1105: }
1106:
1107: struct roff_node *
1108: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
1109: {
1110: struct roff_node *n;
1111:
1112: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
1113: roff_node_append(man, n);
1114: man->next = ROFF_NEXT_CHILD;
1115: return(n);
1.139 schwarze 1116: }
1117:
1.138 schwarze 1118: struct roff_node *
1119: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
1120: {
1121: struct roff_node *n;
1122:
1123: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
1124: roff_node_append(man, n);
1125: man->next = ROFF_NEXT_CHILD;
1126: return(n);
1127: }
1128:
1129: struct roff_node *
1130: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1131: {
1132: struct roff_node *n;
1133:
1134: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1135: roff_node_append(man, n);
1136: man->next = ROFF_NEXT_CHILD;
1137: return(n);
1.139 schwarze 1138: }
1139:
1140: void
1141: roff_addeqn(struct roff_man *man, const struct eqn *eqn)
1142: {
1143: struct roff_node *n;
1144:
1145: n = roff_node_alloc(man, eqn->ln, eqn->pos, ROFFT_EQN, TOKEN_NONE);
1146: n->eqn = eqn;
1147: if (eqn->ln > man->last->line)
1148: n->flags |= MDOC_LINE;
1149: roff_node_append(man, n);
1150: man->next = ROFF_NEXT_SIBLING;
1151: }
1152:
1153: void
1154: roff_addtbl(struct roff_man *man, const struct tbl_span *tbl)
1155: {
1156: struct roff_node *n;
1157:
1158: if (man->macroset == MACROSET_MAN)
1159: man_breakscope(man, TOKEN_NONE);
1160: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
1161: n->span = tbl;
1162: roff_node_append(man, n);
1163: if (man->macroset == MACROSET_MDOC)
1164: mdoc_valid_post(man);
1165: else
1166: man_valid_post(man);
1167: man->next = ROFF_NEXT_SIBLING;
1.138 schwarze 1168: }
1169:
1170: void
1171: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1172: {
1173:
1174: /* Adjust siblings. */
1175:
1176: if (n->prev)
1177: n->prev->next = n->next;
1178: if (n->next)
1179: n->next->prev = n->prev;
1180:
1181: /* Adjust parent. */
1182:
1183: if (n->parent != NULL) {
1184: n->parent->nchild--;
1185: if (n->parent->child == n)
1186: n->parent->child = n->next;
1187: if (n->parent->last == n)
1188: n->parent->last = n->prev;
1189: }
1190:
1191: /* Adjust parse point. */
1192:
1193: if (man == NULL)
1194: return;
1195: if (man->last == n) {
1196: if (n->prev == NULL) {
1197: man->last = n->parent;
1198: man->next = ROFF_NEXT_CHILD;
1199: } else {
1200: man->last = n->prev;
1201: man->next = ROFF_NEXT_SIBLING;
1202: }
1203: }
1204: if (man->first == n)
1205: man->first = NULL;
1206: }
1207:
1208: void
1209: roff_node_free(struct roff_node *n)
1210: {
1211:
1212: if (n->args != NULL)
1213: mdoc_argv_free(n->args);
1214: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1215: free(n->norm);
1216: free(n->string);
1217: free(n);
1218: }
1219:
1220: void
1221: roff_node_delete(struct roff_man *man, struct roff_node *n)
1222: {
1223:
1224: while (n->child != NULL)
1225: roff_node_delete(man, n->child);
1226: assert(n->nchild == 0);
1227: roff_node_unlink(man, n);
1228: roff_node_free(n);
1.141 ! schwarze 1229: }
! 1230:
! 1231: void
! 1232: deroff(char **dest, const struct roff_node *n)
! 1233: {
! 1234: char *cp;
! 1235: size_t sz;
! 1236:
! 1237: if (n->type != ROFFT_TEXT) {
! 1238: for (n = n->child; n != NULL; n = n->next)
! 1239: deroff(dest, n);
! 1240: return;
! 1241: }
! 1242:
! 1243: /* Skip leading whitespace and escape sequences. */
! 1244:
! 1245: cp = n->string;
! 1246: while (*cp != '\0') {
! 1247: if ('\\' == *cp) {
! 1248: cp++;
! 1249: mandoc_escape((const char **)&cp, NULL, NULL);
! 1250: } else if (isspace((unsigned char)*cp))
! 1251: cp++;
! 1252: else
! 1253: break;
! 1254: }
! 1255:
! 1256: /* Skip trailing whitespace. */
! 1257:
! 1258: for (sz = strlen(cp); sz; sz--)
! 1259: if ( ! isspace((unsigned char)cp[sz-1]))
! 1260: break;
! 1261:
! 1262: /* Skip empty strings. */
! 1263:
! 1264: if (sz == 0)
! 1265: return;
! 1266:
! 1267: if (*dest == NULL) {
! 1268: *dest = mandoc_strndup(cp, sz);
! 1269: return;
! 1270: }
! 1271:
! 1272: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
! 1273: free(*dest);
! 1274: *dest = cp;
1.138 schwarze 1275: }
1276:
1277: /* --- main functions of the roff parser ---------------------------------- */
1278:
1.8 schwarze 1279: /*
1.79 schwarze 1280: * In the current line, expand escape sequences that tend to get
1281: * used in numerical expressions and conditional requests.
1282: * Also check the syntax of the remaining escape sequences.
1.8 schwarze 1283: */
1.45 schwarze 1284: static enum rofferr
1.110 schwarze 1285: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.8 schwarze 1286: {
1.81 schwarze 1287: char ubuf[24]; /* buffer to print the number */
1.78 schwarze 1288: const char *start; /* start of the string to process */
1.82 schwarze 1289: char *stesc; /* start of an escape sequence ('\\') */
1.23 schwarze 1290: const char *stnam; /* start of the name, after "[(*" */
1291: const char *cp; /* end of the name, e.g. before ']' */
1292: const char *res; /* the string to be substituted */
1.110 schwarze 1293: char *nbuf; /* new buffer to copy buf->buf to */
1.53 schwarze 1294: size_t maxl; /* expected length of the escape name */
1295: size_t naml; /* actual length of the escape name */
1.109 schwarze 1296: enum mandoc_esc esc; /* type of the escape sequence */
1297: int inaml; /* length returned from mandoc_escape() */
1.53 schwarze 1298: int expand_count; /* to avoid infinite loops */
1.79 schwarze 1299: int npos; /* position in numeric expression */
1.91 schwarze 1300: int arg_complete; /* argument not interrupted by eol */
1.79 schwarze 1301: char term; /* character terminating the escape */
1.8 schwarze 1302:
1.43 schwarze 1303: expand_count = 0;
1.110 schwarze 1304: start = buf->buf + pos;
1.78 schwarze 1305: stesc = strchr(start, '\0') - 1;
1306: while (stesc-- > start) {
1.43 schwarze 1307:
1.78 schwarze 1308: /* Search backwards for the next backslash. */
1309:
1.110 schwarze 1310: if (*stesc != '\\')
1.78 schwarze 1311: continue;
1312:
1313: /* If it is escaped, skip it. */
1314:
1315: for (cp = stesc - 1; cp >= start; cp--)
1.110 schwarze 1316: if (*cp != '\\')
1.78 schwarze 1317: break;
1318:
1.110 schwarze 1319: if ((stesc - cp) % 2 == 0) {
1.82 schwarze 1320: stesc = (char *)cp;
1.78 schwarze 1321: continue;
1322: }
1.23 schwarze 1323:
1.79 schwarze 1324: /* Decide whether to expand or to check only. */
1.23 schwarze 1325:
1.79 schwarze 1326: term = '\0';
1.78 schwarze 1327: cp = stesc + 1;
1.53 schwarze 1328: switch (*cp) {
1.80 schwarze 1329: case '*':
1.53 schwarze 1330: res = NULL;
1331: break;
1.80 schwarze 1332: case 'B':
1.79 schwarze 1333: /* FALLTHROUGH */
1.80 schwarze 1334: case 'w':
1.79 schwarze 1335: term = cp[1];
1336: /* FALLTHROUGH */
1.80 schwarze 1337: case 'n':
1.53 schwarze 1338: res = ubuf;
1339: break;
1340: default:
1.109 schwarze 1341: esc = mandoc_escape(&cp, &stnam, &inaml);
1342: if (esc == ESCAPE_ERROR ||
1343: (esc == ESCAPE_SPECIAL &&
1344: mchars_spec2cp(r->mchars, stnam, inaml) < 0))
1.92 schwarze 1345: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.110 schwarze 1346: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1347: "%.*s", (int)(cp - stesc), stesc);
1.78 schwarze 1348: continue;
1.42 schwarze 1349: }
1350:
1.78 schwarze 1351: if (EXPAND_LIMIT < ++expand_count) {
1352: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.110 schwarze 1353: ln, (int)(stesc - buf->buf), NULL);
1.78 schwarze 1354: return(ROFF_IGN);
1355: }
1.23 schwarze 1356:
1357: /*
1358: * The third character decides the length
1.53 schwarze 1359: * of the name of the string or register.
1.23 schwarze 1360: * Save a pointer to the name.
1361: */
1362:
1.110 schwarze 1363: if (term == '\0') {
1.79 schwarze 1364: switch (*++cp) {
1.80 schwarze 1365: case '\0':
1.79 schwarze 1366: maxl = 0;
1367: break;
1.80 schwarze 1368: case '(':
1.79 schwarze 1369: cp++;
1370: maxl = 2;
1371: break;
1.80 schwarze 1372: case '[':
1.79 schwarze 1373: cp++;
1374: term = ']';
1375: maxl = 0;
1376: break;
1377: default:
1378: maxl = 1;
1379: break;
1380: }
1381: } else {
1382: cp += 2;
1.8 schwarze 1383: maxl = 0;
1384: }
1.23 schwarze 1385: stnam = cp;
1.8 schwarze 1386:
1.23 schwarze 1387: /* Advance to the end of the name. */
1.8 schwarze 1388:
1.125 schwarze 1389: naml = 0;
1.91 schwarze 1390: arg_complete = 1;
1.125 schwarze 1391: while (maxl == 0 || naml < maxl) {
1.110 schwarze 1392: if (*cp == '\0') {
1.92 schwarze 1393: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 1394: ln, (int)(stesc - buf->buf), stesc);
1.91 schwarze 1395: arg_complete = 0;
1.79 schwarze 1396: break;
1.42 schwarze 1397: }
1.110 schwarze 1398: if (maxl == 0 && *cp == term) {
1.79 schwarze 1399: cp++;
1.125 schwarze 1400: break;
1401: }
1402: if (*cp++ != '\\' || stesc[1] != 'w') {
1403: naml++;
1404: continue;
1405: }
1406: switch (mandoc_escape(&cp, NULL, NULL)) {
1407: case ESCAPE_SPECIAL:
1408: /* FALLTHROUGH */
1409: case ESCAPE_UNICODE:
1410: /* FALLTHROUGH */
1411: case ESCAPE_NUMBERED:
1412: /* FALLTHROUGH */
1413: case ESCAPE_OVERSTRIKE:
1414: naml++;
1415: break;
1416: default:
1.8 schwarze 1417: break;
1.79 schwarze 1418: }
1.8 schwarze 1419: }
1420:
1.23 schwarze 1421: /*
1422: * Retrieve the replacement string; if it is
1423: * undefined, resume searching for escapes.
1424: */
1425:
1.79 schwarze 1426: switch (stesc[1]) {
1.80 schwarze 1427: case '*':
1.91 schwarze 1428: if (arg_complete)
1429: res = roff_getstrn(r, stnam, naml);
1.79 schwarze 1430: break;
1.80 schwarze 1431: case 'B':
1.79 schwarze 1432: npos = 0;
1.91 schwarze 1433: ubuf[0] = arg_complete &&
1.133 schwarze 1434: roff_evalnum(r, ln, stnam, &npos,
1435: NULL, ROFFNUM_SCALE) &&
1.91 schwarze 1436: stnam + npos + 1 == cp ? '1' : '0';
1.79 schwarze 1437: ubuf[1] = '\0';
1438: break;
1.80 schwarze 1439: case 'n':
1.91 schwarze 1440: if (arg_complete)
1441: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1442: roff_getregn(r, stnam, naml));
1443: else
1444: ubuf[0] = '\0';
1.79 schwarze 1445: break;
1.80 schwarze 1446: case 'w':
1.91 schwarze 1447: /* use even incomplete args */
1.81 schwarze 1448: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.79 schwarze 1449: 24 * (int)naml);
1450: break;
1451: }
1.8 schwarze 1452:
1.110 schwarze 1453: if (res == NULL) {
1.92 schwarze 1454: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1455: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1456: "%.*s", (int)naml, stnam);
1.37 schwarze 1457: res = "";
1.118 schwarze 1458: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1459: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1460: ln, (int)(stesc - buf->buf), NULL);
1461: return(ROFF_IGN);
1.8 schwarze 1462: }
1463:
1.23 schwarze 1464: /* Replace the escape sequence by the string. */
1465:
1.82 schwarze 1466: *stesc = '\0';
1.110 schwarze 1467: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1468: buf->buf, res, cp) + 1;
1.8 schwarze 1469:
1.78 schwarze 1470: /* Prepare for the next replacement. */
1.8 schwarze 1471:
1.78 schwarze 1472: start = nbuf + pos;
1.110 schwarze 1473: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1474: free(buf->buf);
1475: buf->buf = nbuf;
1.42 schwarze 1476: }
1.45 schwarze 1477: return(ROFF_CONT);
1.42 schwarze 1478: }
1479:
1480: /*
1.51 schwarze 1481: * Process text streams:
1482: * Convert all breakable hyphens into ASCII_HYPH.
1483: * Decrement and spring input line trap.
1.42 schwarze 1484: */
1485: static enum rofferr
1.110 schwarze 1486: roff_parsetext(struct buf *buf, int pos, int *offs)
1.42 schwarze 1487: {
1488: size_t sz;
1489: const char *start;
1.51 schwarze 1490: char *p;
1491: int isz;
1.42 schwarze 1492: enum mandoc_esc esc;
1493:
1.110 schwarze 1494: start = p = buf->buf + pos;
1.42 schwarze 1495:
1.110 schwarze 1496: while (*p != '\0') {
1.42 schwarze 1497: sz = strcspn(p, "-\\");
1498: p += sz;
1499:
1.110 schwarze 1500: if (*p == '\0')
1.42 schwarze 1501: break;
1502:
1.110 schwarze 1503: if (*p == '\\') {
1.42 schwarze 1504: /* Skip over escapes. */
1505: p++;
1.62 schwarze 1506: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.110 schwarze 1507: if (esc == ESCAPE_ERROR)
1.42 schwarze 1508: break;
1.136 schwarze 1509: while (*p == '-')
1510: p++;
1.42 schwarze 1511: continue;
1512: } else if (p == start) {
1513: p++;
1514: continue;
1515: }
1516:
1.44 schwarze 1517: if (isalpha((unsigned char)p[-1]) &&
1518: isalpha((unsigned char)p[1]))
1.42 schwarze 1519: *p = ASCII_HYPH;
1520: p++;
1.8 schwarze 1521: }
1522:
1.51 schwarze 1523: /* Spring the input line trap. */
1.110 schwarze 1524: if (roffit_lines == 1) {
1525: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1526: free(buf->buf);
1527: buf->buf = p;
1528: buf->sz = isz + 1;
1.51 schwarze 1529: *offs = 0;
1530: free(roffit_macro);
1531: roffit_lines = 0;
1532: return(ROFF_REPARSE);
1.110 schwarze 1533: } else if (roffit_lines > 1)
1.51 schwarze 1534: --roffit_lines;
1.42 schwarze 1535: return(ROFF_CONT);
1.8 schwarze 1536: }
1537:
1.1 schwarze 1538: enum rofferr
1.110 schwarze 1539: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.1 schwarze 1540: {
1541: enum rofft t;
1.27 schwarze 1542: enum rofferr e;
1.110 schwarze 1543: int pos; /* parse point */
1.115 schwarze 1544: int spos; /* saved parse point for messages */
1.110 schwarze 1545: int ppos; /* original offset in buf->buf */
1546: int ctl; /* macro line (boolean) */
1547:
1548: ppos = pos = *offs;
1.1 schwarze 1549:
1.102 schwarze 1550: /* Handle in-line equation delimiters. */
1551:
1.108 schwarze 1552: if (r->tbl == NULL &&
1553: r->last_eqn != NULL && r->last_eqn->delim &&
1.102 schwarze 1554: (r->eqn == NULL || r->eqn_inline)) {
1.110 schwarze 1555: e = roff_eqndelim(r, buf, pos);
1.102 schwarze 1556: if (e == ROFF_REPARSE)
1557: return(e);
1558: assert(e == ROFF_CONT);
1559: }
1560:
1561: /* Expand some escape sequences. */
1.8 schwarze 1562:
1.110 schwarze 1563: e = roff_res(r, buf, ln, pos);
1564: if (e == ROFF_IGN)
1.45 schwarze 1565: return(e);
1.110 schwarze 1566: assert(e == ROFF_CONT);
1.8 schwarze 1567:
1.110 schwarze 1568: ctl = roff_getcontrol(r, buf->buf, &pos);
1.35 schwarze 1569:
1.8 schwarze 1570: /*
1.2 schwarze 1571: * First, if a scope is open and we're not a macro, pass the
1.124 schwarze 1572: * text through the macro's filter.
1573: * Equations process all content themselves.
1574: * Tables process almost all content themselves, but we want
1575: * to warn about macros before passing it there.
1.2 schwarze 1576: */
1577:
1.124 schwarze 1578: if (r->last != NULL && ! ctl) {
1.2 schwarze 1579: t = r->last->tok;
1580: assert(roffs[t].text);
1.110 schwarze 1581: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1582: assert(e == ROFF_IGN || e == ROFF_CONT);
1583: if (e != ROFF_CONT)
1.32 schwarze 1584: return(e);
1.54 schwarze 1585: }
1.124 schwarze 1586: if (r->eqn != NULL)
1.110 schwarze 1587: return(eqn_read(&r->eqn, ln, buf->buf, ppos, offs));
1.124 schwarze 1588: if (r->tbl != NULL && ( ! ctl || buf->buf[pos] == '\0'))
1.131 schwarze 1589: return(tbl_read(r->tbl, ln, buf->buf, ppos));
1.124 schwarze 1590: if ( ! ctl)
1.110 schwarze 1591: return(roff_parsetext(buf, pos, offs));
1.100 schwarze 1592:
1593: /* Skip empty request lines. */
1594:
1.110 schwarze 1595: if (buf->buf[pos] == '"') {
1.100 schwarze 1596: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1597: ln, pos, NULL);
1598: return(ROFF_IGN);
1.110 schwarze 1599: } else if (buf->buf[pos] == '\0')
1.100 schwarze 1600: return(ROFF_IGN);
1.2 schwarze 1601:
1602: /*
1603: * If a scope is open, go to the child handler for that macro,
1604: * as it may want to preprocess before doing anything with it.
1.32 schwarze 1605: * Don't do so if an equation is open.
1.2 schwarze 1606: */
1607:
1608: if (r->last) {
1.1 schwarze 1609: t = r->last->tok;
1610: assert(roffs[t].sub);
1.110 schwarze 1611: return((*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs));
1.2 schwarze 1612: }
1613:
1.115 schwarze 1614: /* No scope is open. This is a new request or macro. */
1615:
1616: spos = pos;
1617: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1618:
1619: /* Tables ignore most macros. */
1620:
1621: if (r->tbl != NULL && (t == ROFF_MAX || t == ROFF_TS)) {
1622: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1623: ln, pos, buf->buf + spos);
1.129 schwarze 1624: if (t == ROFF_TS)
1625: return(ROFF_IGN);
1626: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1627: pos++;
1628: while (buf->buf[pos] != '\0' && buf->buf[pos] == ' ')
1629: pos++;
1630: return(tbl_read(r->tbl, ln, buf->buf, pos));
1.115 schwarze 1631: }
1632:
1.2 schwarze 1633: /*
1.115 schwarze 1634: * This is neither a roff request nor a user-defined macro.
1635: * Let the standard macro set parsers handle it.
1.2 schwarze 1636: */
1637:
1.115 schwarze 1638: if (t == ROFF_MAX)
1.1 schwarze 1639: return(ROFF_CONT);
1.115 schwarze 1640:
1641: /* Execute a roff request or a user defined macro. */
1.1 schwarze 1642:
1.2 schwarze 1643: assert(roffs[t].proc);
1.110 schwarze 1644: return((*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs));
1.2 schwarze 1645: }
1646:
1.27 schwarze 1647: void
1.2 schwarze 1648: roff_endparse(struct roff *r)
1649: {
1.1 schwarze 1650:
1.27 schwarze 1651: if (r->last)
1.94 schwarze 1652: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1653: r->last->line, r->last->col,
1654: roffs[r->last->tok].name);
1.27 schwarze 1655:
1.32 schwarze 1656: if (r->eqn) {
1.94 schwarze 1657: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1658: r->eqn->eqn.ln, r->eqn->eqn.pos, "EQ");
1.41 schwarze 1659: eqn_end(&r->eqn);
1.32 schwarze 1660: }
1661:
1.27 schwarze 1662: if (r->tbl) {
1.94 schwarze 1663: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1664: r->tbl->line, r->tbl->pos, "TS");
1.41 schwarze 1665: tbl_end(&r->tbl);
1.27 schwarze 1666: }
1.1 schwarze 1667: }
1668:
1669: /*
1670: * Parse a roff node's type from the input buffer. This must be in the
1671: * form of ".foo xxx" in the usual way.
1672: */
1673: static enum rofft
1.87 schwarze 1674: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.1 schwarze 1675: {
1.87 schwarze 1676: char *cp;
1.16 schwarze 1677: const char *mac;
1678: size_t maclen;
1.1 schwarze 1679: enum rofft t;
1680:
1.87 schwarze 1681: cp = buf + *pos;
1682:
1683: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.1 schwarze 1684: return(ROFF_MAX);
1685:
1.87 schwarze 1686: mac = cp;
1687: maclen = roff_getname(r, &cp, ln, ppos);
1.1 schwarze 1688:
1.16 schwarze 1689: t = (r->current_string = roff_getstrn(r, mac, maclen))
1.42 schwarze 1690: ? ROFF_USERDEF : roffhash_find(mac, maclen);
1.1 schwarze 1691:
1.87 schwarze 1692: if (ROFF_MAX != t)
1693: *pos = cp - buf;
1.1 schwarze 1694:
1695: return(t);
1696: }
1697:
1.138 schwarze 1698: /* --- handling of request blocks ----------------------------------------- */
1699:
1.1 schwarze 1700: static enum rofferr
1.2 schwarze 1701: roff_cblock(ROFF_ARGS)
1.1 schwarze 1702: {
1703:
1.2 schwarze 1704: /*
1705: * A block-close `..' should only be invoked as a child of an
1706: * ignore macro, otherwise raise a warning and just ignore it.
1707: */
1708:
1.110 schwarze 1709: if (r->last == NULL) {
1.94 schwarze 1710: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1711: ln, ppos, "..");
1.2 schwarze 1712: return(ROFF_IGN);
1713: }
1.1 schwarze 1714:
1.2 schwarze 1715: switch (r->last->tok) {
1.80 schwarze 1716: case ROFF_am:
1.93 schwarze 1717: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.2 schwarze 1718: /* FALLTHROUGH */
1.80 schwarze 1719: case ROFF_ami:
1.2 schwarze 1720: /* FALLTHROUGH */
1.80 schwarze 1721: case ROFF_de:
1.23 schwarze 1722: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.2 schwarze 1723: /* FALLTHROUGH */
1.80 schwarze 1724: case ROFF_dei:
1.2 schwarze 1725: /* FALLTHROUGH */
1.80 schwarze 1726: case ROFF_ig:
1.2 schwarze 1727: break;
1728: default:
1.94 schwarze 1729: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1730: ln, ppos, "..");
1.1 schwarze 1731: return(ROFF_IGN);
1.2 schwarze 1732: }
1733:
1.110 schwarze 1734: if (buf->buf[pos] != '\0')
1.90 schwarze 1735: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 1736: ".. %s", buf->buf + pos);
1.2 schwarze 1737:
1738: roffnode_pop(r);
1739: roffnode_cleanscope(r);
1740: return(ROFF_IGN);
1741:
1742: }
1.1 schwarze 1743:
1.2 schwarze 1744: static void
1745: roffnode_cleanscope(struct roff *r)
1746: {
1.1 schwarze 1747:
1.2 schwarze 1748: while (r->last) {
1.46 schwarze 1749: if (--r->last->endspan != 0)
1.2 schwarze 1750: break;
1751: roffnode_pop(r);
1752: }
1753: }
1.1 schwarze 1754:
1.68 schwarze 1755: static void
1756: roff_ccond(struct roff *r, int ln, int ppos)
1.2 schwarze 1757: {
1.1 schwarze 1758:
1.2 schwarze 1759: if (NULL == r->last) {
1.94 schwarze 1760: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1761: ln, ppos, "\\}");
1.68 schwarze 1762: return;
1.2 schwarze 1763: }
1.1 schwarze 1764:
1.2 schwarze 1765: switch (r->last->tok) {
1.80 schwarze 1766: case ROFF_el:
1.2 schwarze 1767: /* FALLTHROUGH */
1.80 schwarze 1768: case ROFF_ie:
1.2 schwarze 1769: /* FALLTHROUGH */
1.80 schwarze 1770: case ROFF_if:
1.2 schwarze 1771: break;
1772: default:
1.94 schwarze 1773: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1774: ln, ppos, "\\}");
1.68 schwarze 1775: return;
1.2 schwarze 1776: }
1.1 schwarze 1777:
1.2 schwarze 1778: if (r->last->endspan > -1) {
1.94 schwarze 1779: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1780: ln, ppos, "\\}");
1.68 schwarze 1781: return;
1.2 schwarze 1782: }
1783:
1784: roffnode_pop(r);
1785: roffnode_cleanscope(r);
1.68 schwarze 1786: return;
1.1 schwarze 1787: }
1788:
1789: static enum rofferr
1.2 schwarze 1790: roff_block(ROFF_ARGS)
1.1 schwarze 1791: {
1.93 schwarze 1792: const char *name;
1793: char *iname, *cp;
1.86 schwarze 1794: size_t namesz;
1.16 schwarze 1795:
1.93 schwarze 1796: /* Ignore groff compatibility mode for now. */
1.2 schwarze 1797:
1.110 schwarze 1798: if (tok == ROFF_de1)
1.93 schwarze 1799: tok = ROFF_de;
1.123 schwarze 1800: else if (tok == ROFF_dei1)
1801: tok = ROFF_dei;
1.110 schwarze 1802: else if (tok == ROFF_am1)
1.93 schwarze 1803: tok = ROFF_am;
1.123 schwarze 1804: else if (tok == ROFF_ami1)
1805: tok = ROFF_ami;
1.93 schwarze 1806:
1807: /* Parse the macro name argument. */
1808:
1.110 schwarze 1809: cp = buf->buf + pos;
1810: if (tok == ROFF_ig) {
1.93 schwarze 1811: iname = NULL;
1812: namesz = 0;
1813: } else {
1814: iname = cp;
1815: namesz = roff_getname(r, &cp, ln, ppos);
1816: iname[namesz] = '\0';
1817: }
1.22 schwarze 1818:
1.93 schwarze 1819: /* Resolve the macro name argument if it is indirect. */
1.22 schwarze 1820:
1.110 schwarze 1821: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1822: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.93 schwarze 1823: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1824: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1825: "%.*s", (int)namesz, iname);
1826: namesz = 0;
1827: } else
1828: namesz = strlen(name);
1829: } else
1830: name = iname;
1.22 schwarze 1831:
1.110 schwarze 1832: if (namesz == 0 && tok != ROFF_ig) {
1.93 schwarze 1833: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1834: ln, ppos, roffs[tok].name);
1835: return(ROFF_IGN);
1836: }
1.2 schwarze 1837:
1.16 schwarze 1838: roffnode_push(r, tok, name, ln, ppos);
1839:
1840: /*
1841: * At the beginning of a `de' macro, clear the existing string
1842: * with the same name, if there is one. New content will be
1.66 schwarze 1843: * appended from roff_block_text() in multiline mode.
1.16 schwarze 1844: */
1.22 schwarze 1845:
1.110 schwarze 1846: if (tok == ROFF_de || tok == ROFF_dei)
1.86 schwarze 1847: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.2 schwarze 1848:
1.110 schwarze 1849: if (*cp == '\0')
1.2 schwarze 1850: return(ROFF_IGN);
1.1 schwarze 1851:
1.93 schwarze 1852: /* Get the custom end marker. */
1.22 schwarze 1853:
1.93 schwarze 1854: iname = cp;
1.86 schwarze 1855: namesz = roff_getname(r, &cp, ln, ppos);
1.93 schwarze 1856:
1857: /* Resolve the end marker if it is indirect. */
1858:
1.110 schwarze 1859: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1860: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.93 schwarze 1861: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1862: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1863: "%.*s", (int)namesz, iname);
1864: namesz = 0;
1865: } else
1866: namesz = strlen(name);
1867: } else
1868: name = iname;
1869:
1.86 schwarze 1870: if (namesz)
1871: r->last->end = mandoc_strndup(name, namesz);
1.2 schwarze 1872:
1.110 schwarze 1873: if (*cp != '\0')
1.90 schwarze 1874: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1875: ln, pos, ".%s ... %s", roffs[tok].name, cp);
1.1 schwarze 1876:
1877: return(ROFF_IGN);
1878: }
1879:
1880: static enum rofferr
1.2 schwarze 1881: roff_block_sub(ROFF_ARGS)
1.1 schwarze 1882: {
1.2 schwarze 1883: enum rofft t;
1884: int i, j;
1885:
1886: /*
1887: * First check whether a custom macro exists at this level. If
1888: * it does, then check against it. This is some of groff's
1889: * stranger behaviours. If we encountered a custom end-scope
1890: * tag and that tag also happens to be a "real" macro, then we
1891: * need to try interpreting it again as a real macro. If it's
1892: * not, then return ignore. Else continue.
1893: */
1894:
1895: if (r->last->end) {
1.35 schwarze 1896: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.110 schwarze 1897: if (buf->buf[i] != r->last->end[j])
1.2 schwarze 1898: break;
1.1 schwarze 1899:
1.110 schwarze 1900: if (r->last->end[j] == '\0' &&
1901: (buf->buf[i] == '\0' ||
1902: buf->buf[i] == ' ' ||
1903: buf->buf[i] == '\t')) {
1.2 schwarze 1904: roffnode_pop(r);
1905: roffnode_cleanscope(r);
1.1 schwarze 1906:
1.110 schwarze 1907: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.35 schwarze 1908: i++;
1909:
1910: pos = i;
1.110 schwarze 1911: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1912: ROFF_MAX)
1.2 schwarze 1913: return(ROFF_RERUN);
1914: return(ROFF_IGN);
1915: }
1.1 schwarze 1916: }
1917:
1.2 schwarze 1918: /*
1919: * If we have no custom end-query or lookup failed, then try
1920: * pulling it out of the hashtable.
1921: */
1.1 schwarze 1922:
1.110 schwarze 1923: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.1 schwarze 1924:
1.110 schwarze 1925: if (t != ROFF_cblock) {
1926: if (tok != ROFF_ig)
1927: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.1 schwarze 1928: return(ROFF_IGN);
1.16 schwarze 1929: }
1.1 schwarze 1930:
1.2 schwarze 1931: assert(roffs[t].proc);
1.110 schwarze 1932: return((*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs));
1.2 schwarze 1933: }
1934:
1935: static enum rofferr
1936: roff_block_text(ROFF_ARGS)
1937: {
1938:
1.110 schwarze 1939: if (tok != ROFF_ig)
1940: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.16 schwarze 1941:
1.2 schwarze 1942: return(ROFF_IGN);
1943: }
1944:
1945: static enum rofferr
1946: roff_cond_sub(ROFF_ARGS)
1947: {
1948: enum rofft t;
1.37 schwarze 1949: char *ep;
1.71 schwarze 1950: int rr;
1.2 schwarze 1951:
1952: rr = r->last->rule;
1.37 schwarze 1953: roffnode_cleanscope(r);
1.110 schwarze 1954: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.2 schwarze 1955:
1.37 schwarze 1956: /*
1.50 schwarze 1957: * Fully handle known macros when they are structurally
1958: * required or when the conditional evaluated to true.
1.5 schwarze 1959: */
1960:
1.110 schwarze 1961: if ((t != ROFF_MAX) &&
1962: (rr || roffs[t].flags & ROFFMAC_STRUCT)) {
1.50 schwarze 1963: assert(roffs[t].proc);
1.110 schwarze 1964: return((*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs));
1.50 schwarze 1965: }
1.39 schwarze 1966:
1.69 schwarze 1967: /*
1968: * If `\}' occurs on a macro line without a preceding macro,
1969: * drop the line completely.
1970: */
1971:
1.110 schwarze 1972: ep = buf->buf + pos;
1973: if (ep[0] == '\\' && ep[1] == '}')
1.71 schwarze 1974: rr = 0;
1.69 schwarze 1975:
1.50 schwarze 1976: /* Always check for the closing delimiter `\}'. */
1.39 schwarze 1977:
1.110 schwarze 1978: while ((ep = strchr(ep, '\\')) != NULL) {
1979: if (*(++ep) == '}') {
1.70 schwarze 1980: *ep = '&';
1.110 schwarze 1981: roff_ccond(r, ln, ep - buf->buf - 1);
1.70 schwarze 1982: }
1.119 schwarze 1983: if (*ep != '\0')
1984: ++ep;
1.50 schwarze 1985: }
1.71 schwarze 1986: return(rr ? ROFF_CONT : ROFF_IGN);
1.2 schwarze 1987: }
1988:
1989: static enum rofferr
1990: roff_cond_text(ROFF_ARGS)
1991: {
1.37 schwarze 1992: char *ep;
1.71 schwarze 1993: int rr;
1.2 schwarze 1994:
1995: rr = r->last->rule;
1.37 schwarze 1996: roffnode_cleanscope(r);
1.1 schwarze 1997:
1.110 schwarze 1998: ep = buf->buf + pos;
1999: while ((ep = strchr(ep, '\\')) != NULL) {
2000: if (*(++ep) == '}') {
1.70 schwarze 2001: *ep = '&';
1.110 schwarze 2002: roff_ccond(r, ln, ep - buf->buf - 1);
1.70 schwarze 2003: }
1.119 schwarze 2004: if (*ep != '\0')
2005: ++ep;
1.2 schwarze 2006: }
1.71 schwarze 2007: return(rr ? ROFF_CONT : ROFF_IGN);
1.2 schwarze 2008: }
2009:
1.138 schwarze 2010: /* --- handling of numeric and conditional expressions -------------------- */
2011:
1.77 schwarze 2012: /*
2013: * Parse a single signed integer number. Stop at the first non-digit.
2014: * If there is at least one digit, return success and advance the
2015: * parse point, else return failure and let the parse point unchanged.
2016: * Ignore overflows, treat them just like the C language.
2017: */
1.56 schwarze 2018: static int
1.133 schwarze 2019: roff_getnum(const char *v, int *pos, int *res, int flags)
1.56 schwarze 2020: {
1.133 schwarze 2021: int myres, scaled, n, p;
1.79 schwarze 2022:
2023: if (NULL == res)
2024: res = &myres;
1.56 schwarze 2025:
2026: p = *pos;
2027: n = v[p] == '-';
1.133 schwarze 2028: if (n || v[p] == '+')
1.56 schwarze 2029: p++;
2030:
1.133 schwarze 2031: if (flags & ROFFNUM_WHITE)
2032: while (isspace((unsigned char)v[p]))
2033: p++;
2034:
1.56 schwarze 2035: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.77 schwarze 2036: *res = 10 * *res + v[p] - '0';
1.56 schwarze 2037: if (p == *pos + n)
2038: return 0;
2039:
2040: if (n)
2041: *res = -*res;
2042:
1.126 schwarze 2043: /* Each number may be followed by one optional scaling unit. */
2044:
2045: switch (v[p]) {
2046: case 'f':
1.133 schwarze 2047: scaled = *res * 65536;
1.126 schwarze 2048: break;
2049: case 'i':
1.133 schwarze 2050: scaled = *res * 240;
1.126 schwarze 2051: break;
2052: case 'c':
1.133 schwarze 2053: scaled = *res * 240 / 2.54;
1.126 schwarze 2054: break;
2055: case 'v':
2056: /* FALLTROUGH */
2057: case 'P':
1.133 schwarze 2058: scaled = *res * 40;
1.126 schwarze 2059: break;
2060: case 'm':
2061: /* FALLTROUGH */
2062: case 'n':
1.133 schwarze 2063: scaled = *res * 24;
1.126 schwarze 2064: break;
2065: case 'p':
1.133 schwarze 2066: scaled = *res * 10 / 3;
1.126 schwarze 2067: break;
2068: case 'u':
1.133 schwarze 2069: scaled = *res;
1.126 schwarze 2070: break;
2071: case 'M':
1.133 schwarze 2072: scaled = *res * 6 / 25;
1.126 schwarze 2073: break;
2074: default:
1.133 schwarze 2075: scaled = *res;
1.126 schwarze 2076: p--;
2077: break;
2078: }
1.133 schwarze 2079: if (flags & ROFFNUM_SCALE)
2080: *res = scaled;
1.126 schwarze 2081:
2082: *pos = p + 1;
2083: return(1);
1.56 schwarze 2084: }
2085:
1.71 schwarze 2086: /*
2087: * Evaluate a string comparison condition.
2088: * The first character is the delimiter.
2089: * Succeed if the string up to its second occurrence
2090: * matches the string up to its third occurence.
2091: * Advance the cursor after the third occurrence
2092: * or lacking that, to the end of the line.
2093: */
2094: static int
2095: roff_evalstrcond(const char *v, int *pos)
2096: {
2097: const char *s1, *s2, *s3;
2098: int match;
2099:
2100: match = 0;
2101: s1 = v + *pos; /* initial delimiter */
2102: s2 = s1 + 1; /* for scanning the first string */
2103: s3 = strchr(s2, *s1); /* for scanning the second string */
2104:
2105: if (NULL == s3) /* found no middle delimiter */
2106: goto out;
2107:
2108: while ('\0' != *++s3) {
2109: if (*s2 != *s3) { /* mismatch */
2110: s3 = strchr(s3, *s1);
2111: break;
2112: }
2113: if (*s3 == *s1) { /* found the final delimiter */
2114: match = 1;
2115: break;
2116: }
2117: s2++;
2118: }
2119:
2120: out:
2121: if (NULL == s3)
2122: s3 = strchr(s2, '\0');
1.114 schwarze 2123: else if (*s3 != '\0')
1.71 schwarze 2124: s3++;
2125: *pos = s3 - v;
2126: return(match);
2127: }
2128:
1.77 schwarze 2129: /*
2130: * Evaluate an optionally negated single character, numerical,
2131: * or string condition.
2132: */
1.71 schwarze 2133: static int
1.106 schwarze 2134: roff_evalcond(struct roff *r, int ln, const char *v, int *pos)
1.5 schwarze 2135: {
1.113 schwarze 2136: int number, savepos, wanttrue;
1.5 schwarze 2137:
1.71 schwarze 2138: if ('!' == v[*pos]) {
2139: wanttrue = 0;
2140: (*pos)++;
2141: } else
2142: wanttrue = 1;
2143:
1.5 schwarze 2144: switch (v[*pos]) {
1.112 schwarze 2145: case '\0':
2146: return(0);
1.80 schwarze 2147: case 'n':
1.71 schwarze 2148: /* FALLTHROUGH */
1.80 schwarze 2149: case 'o':
1.5 schwarze 2150: (*pos)++;
1.71 schwarze 2151: return(wanttrue);
1.80 schwarze 2152: case 'c':
1.71 schwarze 2153: /* FALLTHROUGH */
1.80 schwarze 2154: case 'd':
1.71 schwarze 2155: /* FALLTHROUGH */
1.80 schwarze 2156: case 'e':
1.5 schwarze 2157: /* FALLTHROUGH */
1.80 schwarze 2158: case 'r':
1.5 schwarze 2159: /* FALLTHROUGH */
1.80 schwarze 2160: case 't':
1.111 schwarze 2161: /* FALLTHROUGH */
2162: case 'v':
1.5 schwarze 2163: (*pos)++;
1.71 schwarze 2164: return(!wanttrue);
1.5 schwarze 2165: default:
2166: break;
2167: }
2168:
1.113 schwarze 2169: savepos = *pos;
1.133 schwarze 2170: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.77 schwarze 2171: return((number > 0) == wanttrue);
1.113 schwarze 2172: else if (*pos == savepos)
2173: return(roff_evalstrcond(v, pos) == wanttrue);
1.77 schwarze 2174: else
1.113 schwarze 2175: return (0);
1.5 schwarze 2176: }
2177:
1.2 schwarze 2178: static enum rofferr
1.21 schwarze 2179: roff_line_ignore(ROFF_ARGS)
1.6 schwarze 2180: {
1.30 schwarze 2181:
1.21 schwarze 2182: return(ROFF_IGN);
2183: }
2184:
2185: static enum rofferr
1.123 schwarze 2186: roff_insec(ROFF_ARGS)
2187: {
2188:
2189: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
2190: ln, ppos, roffs[tok].name);
2191: return(ROFF_IGN);
2192: }
2193:
2194: static enum rofferr
2195: roff_unsupp(ROFF_ARGS)
2196: {
2197:
2198: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
2199: ln, ppos, roffs[tok].name);
2200: return(ROFF_IGN);
2201: }
2202:
2203: static enum rofferr
1.2 schwarze 2204: roff_cond(ROFF_ARGS)
2205: {
1.46 schwarze 2206:
2207: roffnode_push(r, tok, NULL, ln, ppos);
1.2 schwarze 2208:
1.80 schwarze 2209: /*
1.35 schwarze 2210: * An `.el' has no conditional body: it will consume the value
2211: * of the current rstack entry set in prior `ie' calls or
1.80 schwarze 2212: * defaults to DENY.
1.35 schwarze 2213: *
2214: * If we're not an `el', however, then evaluate the conditional.
2215: */
1.1 schwarze 2216:
1.110 schwarze 2217: r->last->rule = tok == ROFF_el ?
1.80 schwarze 2218: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.110 schwarze 2219: roff_evalcond(r, ln, buf->buf, &pos);
1.2 schwarze 2220:
1.35 schwarze 2221: /*
2222: * An if-else will put the NEGATION of the current evaluated
2223: * conditional into the stack of rules.
2224: */
2225:
1.110 schwarze 2226: if (tok == ROFF_ie) {
1.96 schwarze 2227: if (r->rstackpos + 1 == r->rstacksz) {
2228: r->rstacksz += 16;
2229: r->rstack = mandoc_reallocarray(r->rstack,
2230: r->rstacksz, sizeof(int));
1.35 schwarze 2231: }
1.71 schwarze 2232: r->rstack[++r->rstackpos] = !r->last->rule;
1.2 schwarze 2233: }
1.5 schwarze 2234:
2235: /* If the parent has false as its rule, then so do we. */
2236:
1.71 schwarze 2237: if (r->last->parent && !r->last->parent->rule)
2238: r->last->rule = 0;
1.5 schwarze 2239:
2240: /*
1.46 schwarze 2241: * Determine scope.
2242: * If there is nothing on the line after the conditional,
2243: * not even whitespace, use next-line scope.
1.5 schwarze 2244: */
1.2 schwarze 2245:
1.110 schwarze 2246: if (buf->buf[pos] == '\0') {
1.46 schwarze 2247: r->last->endspan = 2;
2248: goto out;
2249: }
2250:
1.110 schwarze 2251: while (buf->buf[pos] == ' ')
1.46 schwarze 2252: pos++;
2253:
2254: /* An opening brace requests multiline scope. */
1.2 schwarze 2255:
1.110 schwarze 2256: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.2 schwarze 2257: r->last->endspan = -1;
2258: pos += 2;
1.46 schwarze 2259: goto out;
1.80 schwarze 2260: }
1.2 schwarze 2261:
2262: /*
1.46 schwarze 2263: * Anything else following the conditional causes
2264: * single-line scope. Warn if the scope contains
2265: * nothing but trailing whitespace.
1.2 schwarze 2266: */
2267:
1.110 schwarze 2268: if (buf->buf[pos] == '\0')
1.89 schwarze 2269: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
2270: ln, ppos, roffs[tok].name);
1.2 schwarze 2271:
1.46 schwarze 2272: r->last->endspan = 1;
1.1 schwarze 2273:
1.46 schwarze 2274: out:
1.2 schwarze 2275: *offs = pos;
2276: return(ROFF_RERUN);
1.1 schwarze 2277: }
2278:
1.2 schwarze 2279: static enum rofferr
1.7 schwarze 2280: roff_ds(ROFF_ARGS)
2281: {
1.85 schwarze 2282: char *string;
2283: const char *name;
2284: size_t namesz;
1.10 schwarze 2285:
1.123 schwarze 2286: /* Ignore groff compatibility mode for now. */
2287:
2288: if (tok == ROFF_ds1)
2289: tok = ROFF_ds;
2290: else if (tok == ROFF_as1)
2291: tok = ROFF_as;
2292:
1.10 schwarze 2293: /*
1.85 schwarze 2294: * The first word is the name of the string.
2295: * If it is empty or terminated by an escape sequence,
2296: * abort the `ds' request without defining anything.
1.10 schwarze 2297: */
1.7 schwarze 2298:
1.110 schwarze 2299: name = string = buf->buf + pos;
2300: if (*name == '\0')
1.7 schwarze 2301: return(ROFF_IGN);
2302:
1.85 schwarze 2303: namesz = roff_getname(r, &string, ln, pos);
1.110 schwarze 2304: if (name[namesz] == '\\')
1.85 schwarze 2305: return(ROFF_IGN);
2306:
2307: /* Read past the initial double-quote, if any. */
1.110 schwarze 2308: if (*string == '"')
1.7 schwarze 2309: string++;
2310:
1.10 schwarze 2311: /* The rest is the value. */
1.85 schwarze 2312: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2313: ROFF_as == tok);
1.7 schwarze 2314: return(ROFF_IGN);
2315: }
2316:
1.77 schwarze 2317: /*
2318: * Parse a single operator, one or two characters long.
2319: * If the operator is recognized, return success and advance the
2320: * parse point, else return failure and let the parse point unchanged.
2321: */
2322: static int
2323: roff_getop(const char *v, int *pos, char *res)
2324: {
2325:
2326: *res = v[*pos];
2327:
2328: switch (*res) {
1.80 schwarze 2329: case '+':
1.77 schwarze 2330: /* FALLTHROUGH */
1.80 schwarze 2331: case '-':
1.77 schwarze 2332: /* FALLTHROUGH */
1.80 schwarze 2333: case '*':
1.77 schwarze 2334: /* FALLTHROUGH */
1.80 schwarze 2335: case '/':
1.77 schwarze 2336: /* FALLTHROUGH */
1.80 schwarze 2337: case '%':
1.77 schwarze 2338: /* FALLTHROUGH */
1.80 schwarze 2339: case '&':
1.77 schwarze 2340: /* FALLTHROUGH */
1.80 schwarze 2341: case ':':
1.77 schwarze 2342: break;
2343: case '<':
2344: switch (v[*pos + 1]) {
1.80 schwarze 2345: case '=':
1.77 schwarze 2346: *res = 'l';
2347: (*pos)++;
2348: break;
1.80 schwarze 2349: case '>':
1.77 schwarze 2350: *res = '!';
2351: (*pos)++;
2352: break;
1.80 schwarze 2353: case '?':
1.77 schwarze 2354: *res = 'i';
2355: (*pos)++;
2356: break;
2357: default:
2358: break;
2359: }
2360: break;
2361: case '>':
2362: switch (v[*pos + 1]) {
1.80 schwarze 2363: case '=':
1.77 schwarze 2364: *res = 'g';
2365: (*pos)++;
2366: break;
1.80 schwarze 2367: case '?':
1.77 schwarze 2368: *res = 'a';
2369: (*pos)++;
2370: break;
2371: default:
2372: break;
2373: }
2374: break;
2375: case '=':
2376: if ('=' == v[*pos + 1])
2377: (*pos)++;
2378: break;
2379: default:
2380: return(0);
2381: }
2382: (*pos)++;
2383:
2384: return(*res);
2385: }
2386:
2387: /*
2388: * Evaluate either a parenthesized numeric expression
2389: * or a single signed integer number.
2390: */
2391: static int
1.106 schwarze 2392: roff_evalpar(struct roff *r, int ln,
1.133 schwarze 2393: const char *v, int *pos, int *res, int flags)
1.77 schwarze 2394: {
2395:
2396: if ('(' != v[*pos])
1.133 schwarze 2397: return(roff_getnum(v, pos, res, flags));
1.77 schwarze 2398:
2399: (*pos)++;
1.133 schwarze 2400: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.77 schwarze 2401: return(0);
2402:
1.79 schwarze 2403: /*
2404: * Omission of the closing parenthesis
2405: * is an error in validation mode,
2406: * but ignored in evaluation mode.
2407: */
2408:
1.77 schwarze 2409: if (')' == v[*pos])
2410: (*pos)++;
1.79 schwarze 2411: else if (NULL == res)
2412: return(0);
1.77 schwarze 2413:
2414: return(1);
2415: }
2416:
2417: /*
2418: * Evaluate a complete numeric expression.
2419: * Proceed left to right, there is no concept of precedence.
2420: */
2421: static int
1.106 schwarze 2422: roff_evalnum(struct roff *r, int ln, const char *v,
1.133 schwarze 2423: int *pos, int *res, int flags)
1.77 schwarze 2424: {
2425: int mypos, operand2;
2426: char operator;
2427:
2428: if (NULL == pos) {
2429: mypos = 0;
2430: pos = &mypos;
2431: }
2432:
1.133 schwarze 2433: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2434: while (isspace((unsigned char)v[*pos]))
2435: (*pos)++;
2436:
1.133 schwarze 2437: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.77 schwarze 2438: return(0);
2439:
2440: while (1) {
1.133 schwarze 2441: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2442: while (isspace((unsigned char)v[*pos]))
2443: (*pos)++;
2444:
2445: if ( ! roff_getop(v, pos, &operator))
2446: break;
2447:
1.133 schwarze 2448: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2449: while (isspace((unsigned char)v[*pos]))
2450: (*pos)++;
2451:
1.133 schwarze 2452: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.77 schwarze 2453: return(0);
2454:
1.133 schwarze 2455: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2456: while (isspace((unsigned char)v[*pos]))
2457: (*pos)++;
1.79 schwarze 2458:
2459: if (NULL == res)
2460: continue;
1.77 schwarze 2461:
2462: switch (operator) {
1.80 schwarze 2463: case '+':
1.77 schwarze 2464: *res += operand2;
2465: break;
1.80 schwarze 2466: case '-':
1.77 schwarze 2467: *res -= operand2;
2468: break;
1.80 schwarze 2469: case '*':
1.77 schwarze 2470: *res *= operand2;
2471: break;
1.80 schwarze 2472: case '/':
1.116 schwarze 2473: if (operand2 == 0) {
1.106 schwarze 2474: mandoc_msg(MANDOCERR_DIVZERO,
2475: r->parse, ln, *pos, v);
2476: *res = 0;
2477: break;
2478: }
1.77 schwarze 2479: *res /= operand2;
2480: break;
1.80 schwarze 2481: case '%':
1.116 schwarze 2482: if (operand2 == 0) {
2483: mandoc_msg(MANDOCERR_DIVZERO,
2484: r->parse, ln, *pos, v);
2485: *res = 0;
2486: break;
2487: }
1.77 schwarze 2488: *res %= operand2;
2489: break;
1.80 schwarze 2490: case '<':
1.77 schwarze 2491: *res = *res < operand2;
2492: break;
1.80 schwarze 2493: case '>':
1.77 schwarze 2494: *res = *res > operand2;
2495: break;
1.80 schwarze 2496: case 'l':
1.77 schwarze 2497: *res = *res <= operand2;
2498: break;
1.80 schwarze 2499: case 'g':
1.77 schwarze 2500: *res = *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 '&':
1.77 schwarze 2509: *res = *res && operand2;
2510: break;
1.80 schwarze 2511: case ':':
1.77 schwarze 2512: *res = *res || operand2;
2513: break;
1.80 schwarze 2514: case 'i':
1.77 schwarze 2515: if (operand2 < *res)
2516: *res = operand2;
2517: break;
1.80 schwarze 2518: case 'a':
1.77 schwarze 2519: if (operand2 > *res)
2520: *res = operand2;
2521: break;
2522: default:
2523: abort();
2524: }
2525: }
2526: return(1);
2527: }
2528:
1.138 schwarze 2529: /* --- register management ------------------------------------------------ */
2530:
1.52 schwarze 2531: void
1.60 schwarze 2532: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.41 schwarze 2533: {
1.52 schwarze 2534: struct roffreg *reg;
2535:
2536: /* Search for an existing register with the same name. */
2537: reg = r->regtab;
2538:
2539: while (reg && strcmp(name, reg->key.p))
2540: reg = reg->next;
1.41 schwarze 2541:
1.52 schwarze 2542: if (NULL == reg) {
2543: /* Create a new register. */
2544: reg = mandoc_malloc(sizeof(struct roffreg));
2545: reg->key.p = mandoc_strdup(name);
2546: reg->key.sz = strlen(name);
1.60 schwarze 2547: reg->val = 0;
1.52 schwarze 2548: reg->next = r->regtab;
2549: r->regtab = reg;
2550: }
2551:
1.60 schwarze 2552: if ('+' == sign)
2553: reg->val += val;
2554: else if ('-' == sign)
2555: reg->val -= val;
2556: else
2557: reg->val = val;
1.41 schwarze 2558: }
2559:
1.65 schwarze 2560: /*
2561: * Handle some predefined read-only number registers.
2562: * For now, return -1 if the requested register is not predefined;
2563: * in case a predefined read-only register having the value -1
2564: * were to turn up, another special value would have to be chosen.
2565: */
2566: static int
2567: roff_getregro(const char *name)
2568: {
2569:
2570: switch (*name) {
1.80 schwarze 2571: case 'A': /* ASCII approximation mode is always off. */
1.65 schwarze 2572: return(0);
1.80 schwarze 2573: case 'g': /* Groff compatibility mode is always on. */
1.65 schwarze 2574: return(1);
1.80 schwarze 2575: case 'H': /* Fixed horizontal resolution. */
1.65 schwarze 2576: return (24);
1.80 schwarze 2577: case 'j': /* Always adjust left margin only. */
1.65 schwarze 2578: return(0);
1.80 schwarze 2579: case 'T': /* Some output device is always defined. */
1.65 schwarze 2580: return(1);
1.80 schwarze 2581: case 'V': /* Fixed vertical resolution. */
1.65 schwarze 2582: return (40);
2583: default:
2584: return (-1);
2585: }
2586: }
2587:
1.53 schwarze 2588: int
1.52 schwarze 2589: roff_getreg(const struct roff *r, const char *name)
1.41 schwarze 2590: {
1.52 schwarze 2591: struct roffreg *reg;
1.65 schwarze 2592: int val;
2593:
2594: if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) {
2595: val = roff_getregro(name + 1);
2596: if (-1 != val)
2597: return (val);
2598: }
1.52 schwarze 2599:
2600: for (reg = r->regtab; reg; reg = reg->next)
2601: if (0 == strcmp(name, reg->key.p))
1.53 schwarze 2602: return(reg->val);
2603:
2604: return(0);
2605: }
2606:
2607: static int
2608: roff_getregn(const struct roff *r, const char *name, size_t len)
2609: {
2610: struct roffreg *reg;
1.65 schwarze 2611: int val;
2612:
2613: if ('.' == name[0] && 2 == len) {
2614: val = roff_getregro(name + 1);
2615: if (-1 != val)
2616: return (val);
2617: }
1.53 schwarze 2618:
2619: for (reg = r->regtab; reg; reg = reg->next)
2620: if (len == reg->key.sz &&
2621: 0 == strncmp(name, reg->key.p, len))
2622: return(reg->val);
1.41 schwarze 2623:
1.52 schwarze 2624: return(0);
1.41 schwarze 2625: }
2626:
1.52 schwarze 2627: static void
2628: roff_freereg(struct roffreg *reg)
1.41 schwarze 2629: {
1.52 schwarze 2630: struct roffreg *old_reg;
1.41 schwarze 2631:
1.52 schwarze 2632: while (NULL != reg) {
2633: free(reg->key.p);
2634: old_reg = reg;
2635: reg = reg->next;
2636: free(old_reg);
2637: }
1.41 schwarze 2638: }
1.7 schwarze 2639:
2640: static enum rofferr
1.6 schwarze 2641: roff_nr(ROFF_ARGS)
1.1 schwarze 2642: {
1.85 schwarze 2643: char *key, *val;
2644: size_t keysz;
1.37 schwarze 2645: int iv;
1.60 schwarze 2646: char sign;
1.6 schwarze 2647:
1.110 schwarze 2648: key = val = buf->buf + pos;
2649: if (*key == '\0')
1.85 schwarze 2650: return(ROFF_IGN);
2651:
2652: keysz = roff_getname(r, &val, ln, pos);
1.110 schwarze 2653: if (key[keysz] == '\\')
1.85 schwarze 2654: return(ROFF_IGN);
2655: key[keysz] = '\0';
1.6 schwarze 2656:
1.60 schwarze 2657: sign = *val;
1.110 schwarze 2658: if (sign == '+' || sign == '-')
1.60 schwarze 2659: val++;
2660:
1.133 schwarze 2661: if (roff_evalnum(r, ln, val, NULL, &iv, ROFFNUM_SCALE))
1.77 schwarze 2662: roff_setreg(r, key, iv, sign);
1.1 schwarze 2663:
1.76 schwarze 2664: return(ROFF_IGN);
2665: }
2666:
2667: static enum rofferr
2668: roff_rr(ROFF_ARGS)
2669: {
2670: struct roffreg *reg, **prev;
1.85 schwarze 2671: char *name, *cp;
2672: size_t namesz;
1.76 schwarze 2673:
1.110 schwarze 2674: name = cp = buf->buf + pos;
2675: if (*name == '\0')
1.85 schwarze 2676: return(ROFF_IGN);
2677: namesz = roff_getname(r, &cp, ln, pos);
2678: name[namesz] = '\0';
1.76 schwarze 2679:
2680: prev = &r->regtab;
2681: while (1) {
2682: reg = *prev;
1.110 schwarze 2683: if (reg == NULL || !strcmp(name, reg->key.p))
1.76 schwarze 2684: break;
2685: prev = ®->next;
2686: }
1.110 schwarze 2687: if (reg != NULL) {
1.76 schwarze 2688: *prev = reg->next;
2689: free(reg->key.p);
2690: free(reg);
2691: }
1.29 schwarze 2692: return(ROFF_IGN);
2693: }
2694:
1.138 schwarze 2695: /* --- handler functions for roff requests -------------------------------- */
2696:
1.29 schwarze 2697: static enum rofferr
2698: roff_rm(ROFF_ARGS)
2699: {
2700: const char *name;
2701: char *cp;
1.85 schwarze 2702: size_t namesz;
1.29 schwarze 2703:
1.110 schwarze 2704: cp = buf->buf + pos;
2705: while (*cp != '\0') {
1.85 schwarze 2706: name = cp;
1.110 schwarze 2707: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.85 schwarze 2708: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.110 schwarze 2709: if (name[namesz] == '\\')
1.85 schwarze 2710: break;
1.29 schwarze 2711: }
1.51 schwarze 2712: return(ROFF_IGN);
2713: }
2714:
2715: static enum rofferr
2716: roff_it(ROFF_ARGS)
2717: {
2718: int iv;
2719:
2720: /* Parse the number of lines. */
1.133 schwarze 2721:
2722: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.95 schwarze 2723: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.110 schwarze 2724: ln, ppos, buf->buf + 1);
1.51 schwarze 2725: return(ROFF_IGN);
2726: }
2727:
1.134 schwarze 2728: while (isspace((unsigned char)buf->buf[pos]))
2729: pos++;
2730:
2731: /*
2732: * Arm the input line trap.
2733: * Special-casing "an-trap" is an ugly workaround to cope
2734: * with DocBook stupidly fiddling with man(7) internals.
2735: */
1.133 schwarze 2736:
1.51 schwarze 2737: roffit_lines = iv;
1.134 schwarze 2738: roffit_macro = mandoc_strdup(iv != 1 ||
2739: strcmp(buf->buf + pos, "an-trap") ?
2740: buf->buf + pos : "br");
1.2 schwarze 2741: return(ROFF_IGN);
1.47 schwarze 2742: }
2743:
2744: static enum rofferr
2745: roff_Dd(ROFF_ARGS)
2746: {
2747: const char *const *cp;
2748:
1.99 schwarze 2749: if ((r->options & (MPARSE_MDOC | MPARSE_QUICK)) == 0)
1.47 schwarze 2750: for (cp = __mdoc_reserved; *cp; cp++)
2751: roff_setstr(r, *cp, NULL, 0);
2752:
1.99 schwarze 2753: if (r->format == 0)
2754: r->format = MPARSE_MDOC;
2755:
1.47 schwarze 2756: return(ROFF_CONT);
2757: }
2758:
2759: static enum rofferr
2760: roff_TH(ROFF_ARGS)
2761: {
2762: const char *const *cp;
2763:
1.99 schwarze 2764: if ((r->options & MPARSE_QUICK) == 0)
1.47 schwarze 2765: for (cp = __man_reserved; *cp; cp++)
2766: roff_setstr(r, *cp, NULL, 0);
2767:
1.99 schwarze 2768: if (r->format == 0)
2769: r->format = MPARSE_MAN;
2770:
1.47 schwarze 2771: return(ROFF_CONT);
1.14 schwarze 2772: }
2773:
2774: static enum rofferr
1.27 schwarze 2775: roff_TE(ROFF_ARGS)
2776: {
2777:
2778: if (NULL == r->tbl)
1.94 schwarze 2779: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2780: ln, ppos, "TE");
1.130 schwarze 2781: else if ( ! tbl_end(&r->tbl)) {
2782: free(buf->buf);
2783: buf->buf = mandoc_strdup(".sp");
2784: buf->sz = 4;
2785: return(ROFF_REPARSE);
2786: }
1.27 schwarze 2787: return(ROFF_IGN);
2788: }
2789:
2790: static enum rofferr
2791: roff_T_(ROFF_ARGS)
2792: {
2793:
2794: if (NULL == r->tbl)
1.94 schwarze 2795: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2796: ln, ppos, "T&");
1.27 schwarze 2797: else
2798: tbl_restart(ppos, ln, r->tbl);
2799:
2800: return(ROFF_IGN);
2801: }
2802:
1.102 schwarze 2803: /*
2804: * Handle in-line equation delimiters.
2805: */
2806: static enum rofferr
1.110 schwarze 2807: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.41 schwarze 2808: {
1.105 schwarze 2809: char *cp1, *cp2;
2810: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.41 schwarze 2811:
1.102 schwarze 2812: /*
2813: * Outside equations, look for an opening delimiter.
2814: * If we are inside an equation, we already know it is
2815: * in-line, or this function wouldn't have been called;
2816: * so look for a closing delimiter.
2817: */
2818:
1.110 schwarze 2819: cp1 = buf->buf + pos;
1.102 schwarze 2820: cp2 = strchr(cp1, r->eqn == NULL ?
2821: r->last_eqn->odelim : r->last_eqn->cdelim);
2822: if (cp2 == NULL)
2823: return(ROFF_CONT);
2824:
1.105 schwarze 2825: *cp2++ = '\0';
2826: bef_pr = bef_nl = aft_nl = aft_pr = "";
2827:
2828: /* Handle preceding text, protecting whitespace. */
2829:
1.110 schwarze 2830: if (*buf->buf != '\0') {
1.105 schwarze 2831: if (r->eqn == NULL)
2832: bef_pr = "\\&";
2833: bef_nl = "\n";
2834: }
2835:
2836: /*
2837: * Prepare replacing the delimiter with an equation macro
2838: * and drop leading white space from the equation.
2839: */
1.102 schwarze 2840:
1.105 schwarze 2841: if (r->eqn == NULL) {
2842: while (*cp2 == ' ')
2843: cp2++;
2844: mac = ".EQ";
2845: } else
2846: mac = ".EN";
2847:
2848: /* Handle following text, protecting whitespace. */
2849:
2850: if (*cp2 != '\0') {
2851: aft_nl = "\n";
2852: if (r->eqn != NULL)
2853: aft_pr = "\\&";
2854: }
2855:
2856: /* Do the actual replacement. */
2857:
1.110 schwarze 2858: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.105 schwarze 2859: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.110 schwarze 2860: free(buf->buf);
2861: buf->buf = cp1;
1.102 schwarze 2862:
2863: /* Toggle the in-line state of the eqn subsystem. */
2864:
2865: r->eqn_inline = r->eqn == NULL;
2866: return(ROFF_REPARSE);
1.41 schwarze 2867: }
2868:
1.107 schwarze 2869: static enum rofferr
2870: roff_EQ(ROFF_ARGS)
1.32 schwarze 2871: {
1.41 schwarze 2872: struct eqn_node *e;
1.32 schwarze 2873:
1.110 schwarze 2874: assert(r->eqn == NULL);
1.107 schwarze 2875: e = eqn_alloc(ppos, ln, r->parse);
1.32 schwarze 2876:
1.102 schwarze 2877: if (r->last_eqn) {
1.32 schwarze 2878: r->last_eqn->next = e;
1.102 schwarze 2879: e->delim = r->last_eqn->delim;
2880: e->odelim = r->last_eqn->odelim;
2881: e->cdelim = r->last_eqn->cdelim;
2882: } else
1.32 schwarze 2883: r->first_eqn = r->last_eqn = e;
2884:
2885: r->eqn = r->last_eqn = e;
1.41 schwarze 2886:
1.110 schwarze 2887: if (buf->buf[pos] != '\0')
1.107 schwarze 2888: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 2889: ".EQ %s", buf->buf + pos);
1.41 schwarze 2890:
1.32 schwarze 2891: return(ROFF_IGN);
2892: }
2893:
2894: static enum rofferr
2895: roff_EN(ROFF_ARGS)
2896: {
2897:
1.94 schwarze 2898: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
1.32 schwarze 2899: return(ROFF_IGN);
2900: }
2901:
2902: static enum rofferr
1.27 schwarze 2903: roff_TS(ROFF_ARGS)
2904: {
1.49 schwarze 2905: struct tbl_node *tbl;
1.27 schwarze 2906:
2907: if (r->tbl) {
1.94 schwarze 2908: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
2909: ln, ppos, "TS breaks TS");
1.41 schwarze 2910: tbl_end(&r->tbl);
1.27 schwarze 2911: }
2912:
1.49 schwarze 2913: tbl = tbl_alloc(ppos, ln, r->parse);
1.27 schwarze 2914:
2915: if (r->last_tbl)
1.49 schwarze 2916: r->last_tbl->next = tbl;
1.27 schwarze 2917: else
1.49 schwarze 2918: r->first_tbl = r->last_tbl = tbl;
1.27 schwarze 2919:
1.49 schwarze 2920: r->tbl = r->last_tbl = tbl;
1.27 schwarze 2921: return(ROFF_IGN);
1.123 schwarze 2922: }
2923:
2924: static enum rofferr
2925: roff_brp(ROFF_ARGS)
2926: {
2927:
2928: buf->buf[pos - 1] = '\0';
2929: return(ROFF_CONT);
1.27 schwarze 2930: }
2931:
2932: static enum rofferr
1.48 schwarze 2933: roff_cc(ROFF_ARGS)
2934: {
2935: const char *p;
2936:
1.110 schwarze 2937: p = buf->buf + pos;
1.48 schwarze 2938:
1.110 schwarze 2939: if (*p == '\0' || (r->control = *p++) == '.')
1.48 schwarze 2940: r->control = 0;
2941:
1.110 schwarze 2942: if (*p != '\0')
1.132 schwarze 2943: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
2944: ln, p - buf->buf, "cc ... %s", p);
1.48 schwarze 2945:
2946: return(ROFF_IGN);
2947: }
2948:
2949: static enum rofferr
1.42 schwarze 2950: roff_tr(ROFF_ARGS)
2951: {
2952: const char *p, *first, *second;
2953: size_t fsz, ssz;
2954: enum mandoc_esc esc;
2955:
1.110 schwarze 2956: p = buf->buf + pos;
1.42 schwarze 2957:
1.110 schwarze 2958: if (*p == '\0') {
1.132 schwarze 2959: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.42 schwarze 2960: return(ROFF_IGN);
2961: }
2962:
1.110 schwarze 2963: while (*p != '\0') {
1.42 schwarze 2964: fsz = ssz = 1;
2965:
2966: first = p++;
1.110 schwarze 2967: if (*first == '\\') {
1.42 schwarze 2968: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 2969: if (esc == ESCAPE_ERROR) {
1.92 schwarze 2970: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 2971: ln, (int)(p - buf->buf), first);
1.42 schwarze 2972: return(ROFF_IGN);
2973: }
2974: fsz = (size_t)(p - first);
2975: }
2976:
2977: second = p++;
1.110 schwarze 2978: if (*second == '\\') {
1.42 schwarze 2979: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 2980: if (esc == ESCAPE_ERROR) {
1.92 schwarze 2981: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 2982: ln, (int)(p - buf->buf), second);
1.42 schwarze 2983: return(ROFF_IGN);
2984: }
2985: ssz = (size_t)(p - second);
1.110 schwarze 2986: } else if (*second == '\0') {
1.132 schwarze 2987: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
2988: ln, first - buf->buf, "tr %s", first);
1.42 schwarze 2989: second = " ";
2990: p--;
2991: }
2992:
2993: if (fsz > 1) {
1.80 schwarze 2994: roff_setstrn(&r->xmbtab, first, fsz,
2995: second, ssz, 0);
1.42 schwarze 2996: continue;
2997: }
2998:
1.110 schwarze 2999: if (r->xtab == NULL)
1.80 schwarze 3000: r->xtab = mandoc_calloc(128,
3001: sizeof(struct roffstr));
1.42 schwarze 3002:
3003: free(r->xtab[(int)*first].p);
3004: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3005: r->xtab[(int)*first].sz = ssz;
3006: }
3007:
3008: return(ROFF_IGN);
3009: }
3010:
3011: static enum rofferr
1.14 schwarze 3012: roff_so(ROFF_ARGS)
3013: {
1.121 schwarze 3014: char *name, *cp;
1.15 schwarze 3015:
1.110 schwarze 3016: name = buf->buf + pos;
1.97 schwarze 3017: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.14 schwarze 3018:
1.22 schwarze 3019: /*
3020: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3021: * opening anything that's not in our cwd or anything beneath
3022: * it. Thus, explicitly disallow traversing up the file-system
3023: * or using absolute paths.
3024: */
3025:
1.110 schwarze 3026: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.83 schwarze 3027: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
3028: ".so %s", name);
1.121 schwarze 3029: buf->sz = mandoc_asprintf(&cp,
3030: ".sp\nSee the file %s.\n.sp", name) + 1;
3031: free(buf->buf);
3032: buf->buf = cp;
3033: *offs = 0;
3034: return(ROFF_REPARSE);
1.14 schwarze 3035: }
3036:
3037: *offs = pos;
3038: return(ROFF_SO);
1.7 schwarze 3039: }
3040:
1.138 schwarze 3041: /* --- user defined strings and macros ------------------------------------ */
3042:
1.16 schwarze 3043: static enum rofferr
3044: roff_userdef(ROFF_ARGS)
1.12 schwarze 3045: {
1.135 schwarze 3046: const char *arg[9], *ap;
1.16 schwarze 3047: char *cp, *n1, *n2;
1.25 schwarze 3048: int i;
1.135 schwarze 3049: size_t asz, rsz;
1.12 schwarze 3050:
1.16 schwarze 3051: /*
3052: * Collect pointers to macro argument strings
1.61 schwarze 3053: * and NUL-terminate them.
1.16 schwarze 3054: */
1.135 schwarze 3055:
1.110 schwarze 3056: cp = buf->buf + pos;
1.25 schwarze 3057: for (i = 0; i < 9; i++)
1.110 schwarze 3058: arg[i] = *cp == '\0' ? "" :
1.35 schwarze 3059: mandoc_getarg(r->parse, &cp, ln, &pos);
1.16 schwarze 3060:
3061: /*
3062: * Expand macro arguments.
1.12 schwarze 3063: */
1.135 schwarze 3064:
3065: buf->sz = strlen(r->current_string) + 1;
3066: n1 = cp = mandoc_malloc(buf->sz);
3067: memcpy(n1, r->current_string, buf->sz);
3068: while (*cp != '\0') {
3069:
3070: /* Scan ahead for the next argument invocation. */
3071:
3072: if (*cp++ != '\\')
3073: continue;
3074: if (*cp++ != '$')
3075: continue;
3076: i = *cp - '1';
3077: if (0 > i || 8 < i)
1.16 schwarze 3078: continue;
1.135 schwarze 3079: cp -= 2;
3080:
3081: /*
3082: * Determine the size of the expanded argument,
3083: * taking escaping of quotes into account.
3084: */
3085:
3086: asz = 0;
3087: for (ap = arg[i]; *ap != '\0'; ap++) {
3088: asz++;
3089: if (*ap == '"')
3090: asz += 3;
3091: }
3092: if (asz != 3) {
3093:
3094: /*
3095: * Determine the size of the rest of the
3096: * unexpanded macro, including the NUL.
3097: */
3098:
3099: rsz = buf->sz - (cp - n1) - 3;
3100:
3101: /*
3102: * When shrinking, move before
3103: * releasing the storage.
3104: */
3105:
3106: if (asz < 3)
3107: memmove(cp + asz, cp + 3, rsz);
3108:
3109: /*
3110: * Resize the storage for the macro
3111: * and readjust the parse pointer.
3112: */
3113:
3114: buf->sz += asz - 3;
3115: n2 = mandoc_realloc(n1, buf->sz);
3116: cp = n2 + (cp - n1);
3117: n1 = n2;
3118:
3119: /*
3120: * When growing, make room
3121: * for the expanded argument.
3122: */
3123:
3124: if (asz > 3)
3125: memmove(cp + asz, cp + 3, rsz);
3126: }
3127:
3128: /* Copy the expanded argument, escaping quotes. */
3129:
3130: n2 = cp;
3131: for (ap = arg[i]; *ap != '\0'; ap++) {
3132: if (*ap == '"') {
3133: memcpy(n2, "\\(dq", 4);
3134: n2 += 4;
3135: } else
3136: *n2++ = *ap;
1.16 schwarze 3137: }
1.12 schwarze 3138: }
3139:
1.16 schwarze 3140: /*
3141: * Replace the macro invocation
3142: * by the expanded macro.
3143: */
1.135 schwarze 3144:
1.110 schwarze 3145: free(buf->buf);
3146: buf->buf = n1;
1.120 schwarze 3147: *offs = 0;
1.16 schwarze 3148:
1.110 schwarze 3149: return(buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
1.16 schwarze 3150: ROFF_REPARSE : ROFF_APPEND);
1.12 schwarze 3151: }
1.28 schwarze 3152:
1.85 schwarze 3153: static size_t
1.28 schwarze 3154: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3155: {
3156: char *name, *cp;
1.85 schwarze 3157: size_t namesz;
1.28 schwarze 3158:
3159: name = *cpp;
3160: if ('\0' == *name)
1.85 schwarze 3161: return(0);
1.28 schwarze 3162:
1.85 schwarze 3163: /* Read until end of name and terminate it with NUL. */
3164: for (cp = name; 1; cp++) {
3165: if ('\0' == *cp || ' ' == *cp) {
3166: namesz = cp - name;
3167: break;
3168: }
1.28 schwarze 3169: if ('\\' != *cp)
3170: continue;
1.88 schwarze 3171: namesz = cp - name;
3172: if ('{' == cp[1] || '}' == cp[1])
3173: break;
1.28 schwarze 3174: cp++;
3175: if ('\\' == *cp)
3176: continue;
1.97 schwarze 3177: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3178: "%.*s", (int)(cp - name + 1), name);
1.85 schwarze 3179: mandoc_escape((const char **)&cp, NULL, NULL);
3180: break;
1.28 schwarze 3181: }
3182:
3183: /* Read past spaces. */
3184: while (' ' == *cp)
3185: cp++;
3186:
3187: *cpp = cp;
1.85 schwarze 3188: return(namesz);
1.28 schwarze 3189: }
3190:
1.16 schwarze 3191: /*
3192: * Store *string into the user-defined string called *name.
3193: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.66 schwarze 3194: * append == 0: replace mode
3195: * append == 1: single-line append mode
3196: * append == 2: multiline append mode, append '\n' after each call
1.16 schwarze 3197: */
1.8 schwarze 3198: static void
1.16 schwarze 3199: roff_setstr(struct roff *r, const char *name, const char *string,
1.66 schwarze 3200: int append)
1.7 schwarze 3201: {
1.42 schwarze 3202:
3203: roff_setstrn(&r->strtab, name, strlen(name), string,
1.80 schwarze 3204: string ? strlen(string) : 0, append);
1.42 schwarze 3205: }
3206:
3207: static void
3208: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.66 schwarze 3209: const char *string, size_t stringsz, int append)
1.42 schwarze 3210: {
3211: struct roffkv *n;
3212: char *c;
3213: int i;
3214: size_t oldch, newch;
1.7 schwarze 3215:
1.16 schwarze 3216: /* Search for an existing string with the same name. */
1.42 schwarze 3217: n = *r;
3218:
1.84 schwarze 3219: while (n && (namesz != n->key.sz ||
3220: strncmp(n->key.p, name, namesz)))
1.7 schwarze 3221: n = n->next;
1.8 schwarze 3222:
3223: if (NULL == n) {
1.16 schwarze 3224: /* Create a new string table entry. */
1.42 schwarze 3225: n = mandoc_malloc(sizeof(struct roffkv));
3226: n->key.p = mandoc_strndup(name, namesz);
3227: n->key.sz = namesz;
3228: n->val.p = NULL;
3229: n->val.sz = 0;
3230: n->next = *r;
3231: *r = n;
1.66 schwarze 3232: } else if (0 == append) {
1.42 schwarze 3233: free(n->val.p);
3234: n->val.p = NULL;
3235: n->val.sz = 0;
1.16 schwarze 3236: }
3237:
3238: if (NULL == string)
3239: return;
3240:
3241: /*
3242: * One additional byte for the '\n' in multiline mode,
3243: * and one for the terminating '\0'.
3244: */
1.66 schwarze 3245: newch = stringsz + (1 < append ? 2u : 1u);
1.42 schwarze 3246:
3247: if (NULL == n->val.p) {
3248: n->val.p = mandoc_malloc(newch);
3249: *n->val.p = '\0';
1.16 schwarze 3250: oldch = 0;
3251: } else {
1.42 schwarze 3252: oldch = n->val.sz;
3253: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.16 schwarze 3254: }
3255:
3256: /* Skip existing content in the destination buffer. */
1.42 schwarze 3257: c = n->val.p + (int)oldch;
1.16 schwarze 3258:
3259: /* Append new content to the destination buffer. */
1.42 schwarze 3260: i = 0;
3261: while (i < (int)stringsz) {
1.16 schwarze 3262: /*
3263: * Rudimentary roff copy mode:
3264: * Handle escaped backslashes.
3265: */
1.42 schwarze 3266: if ('\\' == string[i] && '\\' == string[i + 1])
3267: i++;
3268: *c++ = string[i++];
1.16 schwarze 3269: }
1.8 schwarze 3270:
1.16 schwarze 3271: /* Append terminating bytes. */
1.66 schwarze 3272: if (1 < append)
1.16 schwarze 3273: *c++ = '\n';
1.42 schwarze 3274:
1.16 schwarze 3275: *c = '\0';
1.42 schwarze 3276: n->val.sz = (int)(c - n->val.p);
1.7 schwarze 3277: }
3278:
1.8 schwarze 3279: static const char *
3280: roff_getstrn(const struct roff *r, const char *name, size_t len)
1.7 schwarze 3281: {
1.42 schwarze 3282: const struct roffkv *n;
1.64 schwarze 3283: int i;
1.7 schwarze 3284:
1.42 schwarze 3285: for (n = r->strtab; n; n = n->next)
1.80 schwarze 3286: if (0 == strncmp(name, n->key.p, len) &&
3287: '\0' == n->key.p[(int)len])
1.42 schwarze 3288: return(n->val.p);
1.64 schwarze 3289:
3290: for (i = 0; i < PREDEFS_MAX; i++)
3291: if (0 == strncmp(name, predefs[i].name, len) &&
3292: '\0' == predefs[i].name[(int)len])
3293: return(predefs[i].str);
1.8 schwarze 3294:
1.42 schwarze 3295: return(NULL);
1.7 schwarze 3296: }
3297:
1.8 schwarze 3298: static void
1.42 schwarze 3299: roff_freestr(struct roffkv *r)
1.7 schwarze 3300: {
1.42 schwarze 3301: struct roffkv *n, *nn;
1.7 schwarze 3302:
1.42 schwarze 3303: for (n = r; n; n = nn) {
3304: free(n->key.p);
3305: free(n->val.p);
1.7 schwarze 3306: nn = n->next;
3307: free(n);
3308: }
1.27 schwarze 3309: }
1.138 schwarze 3310:
3311: /* --- accessors and utility functions ------------------------------------ */
1.27 schwarze 3312:
3313: const struct tbl_span *
3314: roff_span(const struct roff *r)
3315: {
1.80 schwarze 3316:
1.27 schwarze 3317: return(r->tbl ? tbl_span(r->tbl) : NULL);
1.32 schwarze 3318: }
3319:
3320: const struct eqn *
3321: roff_eqn(const struct roff *r)
3322: {
1.80 schwarze 3323:
1.32 schwarze 3324: return(r->last_eqn ? &r->last_eqn->eqn : NULL);
1.42 schwarze 3325: }
3326:
3327: /*
3328: * Duplicate an input string, making the appropriate character
3329: * conversations (as stipulated by `tr') along the way.
3330: * Returns a heap-allocated string with all the replacements made.
3331: */
3332: char *
3333: roff_strdup(const struct roff *r, const char *p)
3334: {
3335: const struct roffkv *cp;
3336: char *res;
3337: const char *pp;
3338: size_t ssz, sz;
3339: enum mandoc_esc esc;
3340:
3341: if (NULL == r->xmbtab && NULL == r->xtab)
3342: return(mandoc_strdup(p));
3343: else if ('\0' == *p)
3344: return(mandoc_strdup(""));
3345:
3346: /*
3347: * Step through each character looking for term matches
3348: * (remember that a `tr' can be invoked with an escape, which is
3349: * a glyph but the escape is multi-character).
3350: * We only do this if the character hash has been initialised
3351: * and the string is >0 length.
3352: */
3353:
3354: res = NULL;
3355: ssz = 0;
3356:
3357: while ('\0' != *p) {
3358: if ('\\' != *p && r->xtab && r->xtab[(int)*p].p) {
3359: sz = r->xtab[(int)*p].sz;
3360: res = mandoc_realloc(res, ssz + sz + 1);
3361: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3362: ssz += sz;
3363: p++;
3364: continue;
3365: } else if ('\\' != *p) {
3366: res = mandoc_realloc(res, ssz + 2);
3367: res[ssz++] = *p++;
3368: continue;
3369: }
3370:
3371: /* Search for term matches. */
3372: for (cp = r->xmbtab; cp; cp = cp->next)
3373: if (0 == strncmp(p, cp->key.p, cp->key.sz))
3374: break;
3375:
3376: if (NULL != cp) {
3377: /*
3378: * A match has been found.
3379: * Append the match to the array and move
3380: * forward by its keysize.
3381: */
1.80 schwarze 3382: res = mandoc_realloc(res,
3383: ssz + cp->val.sz + 1);
1.42 schwarze 3384: memcpy(res + ssz, cp->val.p, cp->val.sz);
3385: ssz += cp->val.sz;
3386: p += (int)cp->key.sz;
3387: continue;
3388: }
3389:
3390: /*
3391: * Handle escapes carefully: we need to copy
3392: * over just the escape itself, or else we might
3393: * do replacements within the escape itself.
3394: * Make sure to pass along the bogus string.
3395: */
3396: pp = p++;
3397: esc = mandoc_escape(&p, NULL, NULL);
3398: if (ESCAPE_ERROR == esc) {
3399: sz = strlen(pp);
3400: res = mandoc_realloc(res, ssz + sz + 1);
3401: memcpy(res + ssz, pp, sz);
3402: break;
3403: }
1.80 schwarze 3404: /*
3405: * We bail out on bad escapes.
1.42 schwarze 3406: * No need to warn: we already did so when
3407: * roff_res() was called.
3408: */
3409: sz = (int)(p - pp);
3410: res = mandoc_realloc(res, ssz + sz + 1);
3411: memcpy(res + ssz, pp, sz);
3412: ssz += sz;
3413: }
3414:
3415: res[(int)ssz] = '\0';
3416: return(res);
1.99 schwarze 3417: }
3418:
3419: int
3420: roff_getformat(const struct roff *r)
3421: {
3422:
3423: return(r->format);
1.48 schwarze 3424: }
3425:
3426: /*
1.80 schwarze 3427: * Find out whether a line is a macro line or not.
1.48 schwarze 3428: * If it is, adjust the current position and return one; if it isn't,
3429: * return zero and don't change the current position.
3430: * If the control character has been set with `.cc', then let that grain
3431: * precedence.
3432: * This is slighly contrary to groff, where using the non-breaking
3433: * control character when `cc' has been invoked will cause the
3434: * non-breaking macro contents to be printed verbatim.
3435: */
3436: int
3437: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
3438: {
3439: int pos;
3440:
3441: pos = *ppos;
3442:
3443: if (0 != r->control && cp[pos] == r->control)
3444: pos++;
3445: else if (0 != r->control)
3446: return(0);
3447: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
3448: pos += 2;
3449: else if ('.' == cp[pos] || '\'' == cp[pos])
3450: pos++;
3451: else
3452: return(0);
3453:
3454: while (' ' == cp[pos] || '\t' == cp[pos])
3455: pos++;
3456:
3457: *ppos = pos;
3458: return(1);
1.1 schwarze 3459: }
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