Annotation of src/usr.bin/mandoc/roff.c, Revision 1.143
1.143 ! schwarze 1: /* $OpenBSD: roff.c,v 1.142 2015/05/01 16:01:53 schwarze Exp $ */
1.1 schwarze 2: /*
1.139 schwarze 3: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.119 schwarze 4: * Copyright (c) 2010-2015 Ingo Schwarze <schwarze@openbsd.org>
1.1 schwarze 5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
1.16 schwarze 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.1 schwarze 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.16 schwarze 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.1 schwarze 13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
1.99 schwarze 18: #include <sys/types.h>
19:
1.1 schwarze 20: #include <assert.h>
1.3 schwarze 21: #include <ctype.h>
1.117 schwarze 22: #include <limits.h>
1.51 schwarze 23: #include <stdio.h>
1.1 schwarze 24: #include <stdlib.h>
25: #include <string.h>
26:
27: #include "mandoc.h"
1.74 schwarze 28: #include "mandoc_aux.h"
1.137 schwarze 29: #include "roff.h"
1.98 daniel 30: #include "libmandoc.h"
1.138 schwarze 31: #include "roff_int.h"
1.27 schwarze 32: #include "libroff.h"
1.1 schwarze 33:
1.37 schwarze 34: /* Maximum number of nested if-else conditionals. */
1.2 schwarze 35: #define RSTACK_MAX 128
36:
1.43 schwarze 37: /* Maximum number of string expansions per line, to break infinite loops. */
38: #define EXPAND_LIMIT 1000
39:
1.138 schwarze 40: /* --- data types --------------------------------------------------------- */
41:
1.1 schwarze 42: enum rofft {
1.123 schwarze 43: ROFF_ab,
1.20 schwarze 44: ROFF_ad,
1.123 schwarze 45: ROFF_af,
46: ROFF_aln,
47: ROFF_als,
1.2 schwarze 48: ROFF_am,
1.123 schwarze 49: ROFF_am1,
1.2 schwarze 50: ROFF_ami,
1.123 schwarze 51: ROFF_ami1,
1.66 schwarze 52: ROFF_as,
1.123 schwarze 53: ROFF_as1,
54: ROFF_asciify,
55: ROFF_backtrace,
56: ROFF_bd,
57: ROFF_bleedat,
58: ROFF_blm,
59: ROFF_box,
60: ROFF_boxa,
61: ROFF_bp,
62: ROFF_BP,
63: /* MAN_br, MDOC_br */
64: ROFF_break,
65: ROFF_breakchar,
66: ROFF_brnl,
67: ROFF_brp,
68: ROFF_brpnl,
69: ROFF_c2,
1.48 schwarze 70: ROFF_cc,
1.67 schwarze 71: ROFF_ce,
1.123 schwarze 72: ROFF_cf,
73: ROFF_cflags,
74: ROFF_ch,
75: ROFF_char,
76: ROFF_chop,
77: ROFF_class,
78: ROFF_close,
79: ROFF_CL,
80: ROFF_color,
81: ROFF_composite,
82: ROFF_continue,
83: ROFF_cp,
84: ROFF_cropat,
85: ROFF_cs,
86: ROFF_cu,
87: ROFF_da,
88: ROFF_dch,
89: ROFF_Dd,
1.1 schwarze 90: ROFF_de,
1.123 schwarze 91: ROFF_de1,
92: ROFF_defcolor,
1.1 schwarze 93: ROFF_dei,
1.123 schwarze 94: ROFF_dei1,
95: ROFF_device,
96: ROFF_devicem,
97: ROFF_di,
98: ROFF_do,
1.2 schwarze 99: ROFF_ds,
1.123 schwarze 100: ROFF_ds1,
101: ROFF_dwh,
102: ROFF_dt,
103: ROFF_ec,
104: ROFF_ecr,
105: ROFF_ecs,
1.2 schwarze 106: ROFF_el,
1.123 schwarze 107: ROFF_em,
108: ROFF_EN,
109: ROFF_eo,
110: ROFF_EP,
111: ROFF_EQ,
112: ROFF_errprint,
113: ROFF_ev,
114: ROFF_evc,
115: ROFF_ex,
116: ROFF_fallback,
1.58 schwarze 117: ROFF_fam,
1.123 schwarze 118: ROFF_fc,
119: ROFF_fchar,
120: ROFF_fcolor,
121: ROFF_fdeferlig,
122: ROFF_feature,
123: /* MAN_fi; ignored in mdoc(7) */
124: ROFF_fkern,
125: ROFF_fl,
126: ROFF_flig,
127: ROFF_fp,
128: ROFF_fps,
129: ROFF_fschar,
130: ROFF_fspacewidth,
131: ROFF_fspecial,
132: /* MAN_ft; ignored in mdoc(7) */
133: ROFF_ftr,
134: ROFF_fzoom,
135: ROFF_gcolor,
136: ROFF_hc,
137: ROFF_hcode,
138: ROFF_hidechar,
139: ROFF_hla,
140: ROFF_hlm,
141: ROFF_hpf,
142: ROFF_hpfa,
143: ROFF_hpfcode,
1.59 schwarze 144: ROFF_hw,
1.20 schwarze 145: ROFF_hy,
1.123 schwarze 146: ROFF_hylang,
147: ROFF_hylen,
148: ROFF_hym,
149: ROFF_hypp,
150: ROFF_hys,
1.2 schwarze 151: ROFF_ie,
152: ROFF_if,
1.1 schwarze 153: ROFF_ig,
1.123 schwarze 154: /* MAN_in; ignored in mdoc(7) */
155: ROFF_index,
1.30 schwarze 156: ROFF_it,
1.123 schwarze 157: ROFF_itc,
158: ROFF_IX,
159: ROFF_kern,
160: ROFF_kernafter,
161: ROFF_kernbefore,
162: ROFF_kernpair,
163: ROFF_lc,
164: ROFF_lc_ctype,
165: ROFF_lds,
166: ROFF_length,
167: ROFF_letadj,
168: ROFF_lf,
169: ROFF_lg,
170: ROFF_lhang,
171: ROFF_linetabs,
172: /* MAN_ll, MDOC_ll */
173: ROFF_lnr,
174: ROFF_lnrf,
175: ROFF_lpfx,
176: ROFF_ls,
177: ROFF_lsm,
178: ROFF_lt,
179: ROFF_mc,
180: ROFF_mediasize,
181: ROFF_minss,
182: ROFF_mk,
183: ROFF_mso,
1.128 schwarze 184: ROFF_na,
1.20 schwarze 185: ROFF_ne,
1.123 schwarze 186: /* MAN_nf; ignored in mdoc(7) */
1.20 schwarze 187: ROFF_nh,
1.123 schwarze 188: ROFF_nhychar,
189: ROFF_nm,
190: ROFF_nn,
191: ROFF_nop,
1.14 schwarze 192: ROFF_nr,
1.123 schwarze 193: ROFF_nrf,
194: ROFF_nroff,
1.31 schwarze 195: ROFF_ns,
1.123 schwarze 196: ROFF_nx,
197: ROFF_open,
198: ROFF_opena,
199: ROFF_os,
200: ROFF_output,
201: ROFF_padj,
202: ROFF_papersize,
203: ROFF_pc,
204: ROFF_pev,
205: ROFF_pi,
206: ROFF_PI,
1.101 schwarze 207: ROFF_pl,
1.123 schwarze 208: ROFF_pm,
209: ROFF_pn,
210: ROFF_pnr,
211: ROFF_po,
1.31 schwarze 212: ROFF_ps,
1.123 schwarze 213: ROFF_psbb,
214: ROFF_pshape,
215: ROFF_pso,
216: ROFF_ptr,
217: ROFF_pvs,
218: ROFF_rchar,
219: ROFF_rd,
220: ROFF_recursionlimit,
221: ROFF_return,
222: ROFF_rfschar,
223: ROFF_rhang,
224: ROFF_rj,
1.2 schwarze 225: ROFF_rm,
1.123 schwarze 226: ROFF_rn,
227: ROFF_rnn,
1.76 schwarze 228: ROFF_rr,
1.123 schwarze 229: ROFF_rs,
230: ROFF_rt,
231: ROFF_schar,
232: ROFF_sentchar,
233: ROFF_shc,
234: ROFF_shift,
235: ROFF_sizes,
1.14 schwarze 236: ROFF_so,
1.123 schwarze 237: /* MAN_sp, MDOC_sp */
238: ROFF_spacewidth,
239: ROFF_special,
240: ROFF_spreadwarn,
241: ROFF_ss,
242: ROFF_sty,
243: ROFF_substring,
244: ROFF_sv,
245: ROFF_sy,
246: ROFF_T_,
1.31 schwarze 247: ROFF_ta,
1.123 schwarze 248: ROFF_tc,
249: ROFF_TE,
250: ROFF_TH,
251: ROFF_ti,
252: ROFF_tkf,
253: ROFF_tl,
254: ROFF_tm,
255: ROFF_tm1,
256: ROFF_tmc,
1.2 schwarze 257: ROFF_tr,
1.123 schwarze 258: ROFF_track,
259: ROFF_transchar,
260: ROFF_trf,
261: ROFF_trimat,
262: ROFF_trin,
263: ROFF_trnt,
264: ROFF_troff,
1.27 schwarze 265: ROFF_TS,
1.123 schwarze 266: ROFF_uf,
267: ROFF_ul,
268: ROFF_unformat,
269: ROFF_unwatch,
270: ROFF_unwatchn,
271: ROFF_vpt,
272: ROFF_vs,
273: ROFF_warn,
274: ROFF_warnscale,
275: ROFF_watch,
276: ROFF_watchlength,
277: ROFF_watchn,
278: ROFF_wh,
279: ROFF_while,
280: ROFF_write,
281: ROFF_writec,
282: ROFF_writem,
283: ROFF_xflag,
1.2 schwarze 284: ROFF_cblock,
1.16 schwarze 285: ROFF_USERDEF,
1.1 schwarze 286: ROFF_MAX
287: };
288:
1.41 schwarze 289: /*
1.42 schwarze 290: * An incredibly-simple string buffer.
291: */
1.8 schwarze 292: struct roffstr {
1.42 schwarze 293: char *p; /* nil-terminated buffer */
294: size_t sz; /* saved strlen(p) */
295: };
296:
297: /*
298: * A key-value roffstr pair as part of a singly-linked list.
299: */
300: struct roffkv {
301: struct roffstr key;
302: struct roffstr val;
303: struct roffkv *next; /* next in list */
1.8 schwarze 304: };
305:
1.52 schwarze 306: /*
307: * A single number register as part of a singly-linked list.
308: */
309: struct roffreg {
310: struct roffstr key;
1.53 schwarze 311: int val;
1.52 schwarze 312: struct roffreg *next;
313: };
314:
1.1 schwarze 315: struct roff {
1.35 schwarze 316: struct mparse *parse; /* parse point */
1.109 schwarze 317: const struct mchars *mchars; /* character table */
1.1 schwarze 318: struct roffnode *last; /* leaf of stack */
1.96 schwarze 319: int *rstack; /* stack of inverted `ie' values */
1.52 schwarze 320: struct roffreg *regtab; /* number registers */
1.42 schwarze 321: struct roffkv *strtab; /* user-defined strings & macros */
322: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
323: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.16 schwarze 324: const char *current_string; /* value of last called user macro */
1.27 schwarze 325: struct tbl_node *first_tbl; /* first table parsed */
326: struct tbl_node *last_tbl; /* last table parsed */
327: struct tbl_node *tbl; /* current table being parsed */
1.32 schwarze 328: struct eqn_node *last_eqn; /* last equation parsed */
329: struct eqn_node *first_eqn; /* first equation parsed */
330: struct eqn_node *eqn; /* current equation being parsed */
1.102 schwarze 331: int eqn_inline; /* current equation is inline */
1.96 schwarze 332: int options; /* parse options */
333: int rstacksz; /* current size limit of rstack */
334: int rstackpos; /* position in rstack */
1.99 schwarze 335: int format; /* current file in mdoc or man format */
1.96 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);
1.143 ! schwarze 398: static int roff_evalcond(struct roff *r, int, char *, int *);
1.106 schwarze 399: static int roff_evalnum(struct roff *, int,
400: const char *, int *, int *, int);
401: static int roff_evalpar(struct roff *, int,
1.133 schwarze 402: const char *, int *, int *, int);
1.71 schwarze 403: static int roff_evalstrcond(const char *, int *);
1.42 schwarze 404: static void roff_free1(struct roff *);
1.52 schwarze 405: static void roff_freereg(struct roffreg *);
1.42 schwarze 406: static void roff_freestr(struct roffkv *);
1.85 schwarze 407: static size_t roff_getname(struct roff *, char **, int, int);
1.133 schwarze 408: static int roff_getnum(const char *, int *, int *, int);
1.56 schwarze 409: static int roff_getop(const char *, int *, char *);
1.53 schwarze 410: static int roff_getregn(const struct roff *,
411: const char *, size_t);
1.65 schwarze 412: static int roff_getregro(const char *name);
1.80 schwarze 413: static const char *roff_getstrn(const struct roff *,
1.8 schwarze 414: const char *, size_t);
1.143 ! schwarze 415: static int roff_hasregn(const struct roff *,
! 416: const char *, size_t);
1.123 schwarze 417: static enum rofferr roff_insec(ROFF_ARGS);
1.51 schwarze 418: static enum rofferr roff_it(ROFF_ARGS);
1.21 schwarze 419: static enum rofferr roff_line_ignore(ROFF_ARGS);
1.137 schwarze 420: static void roff_man_alloc1(struct roff_man *);
421: static void roff_man_free1(struct roff_man *);
1.6 schwarze 422: static enum rofferr roff_nr(ROFF_ARGS);
1.87 schwarze 423: static enum rofft roff_parse(struct roff *, char *, int *,
424: int, int);
1.110 schwarze 425: static enum rofferr roff_parsetext(struct buf *, int, int *);
426: static enum rofferr roff_res(struct roff *, struct buf *, int, int);
1.29 schwarze 427: static enum rofferr roff_rm(ROFF_ARGS);
1.76 schwarze 428: static enum rofferr roff_rr(ROFF_ARGS);
1.8 schwarze 429: static void roff_setstr(struct roff *,
1.16 schwarze 430: const char *, const char *, int);
1.80 schwarze 431: static void roff_setstrn(struct roffkv **, const char *,
1.42 schwarze 432: size_t, const char *, size_t, int);
1.14 schwarze 433: static enum rofferr roff_so(ROFF_ARGS);
1.42 schwarze 434: static enum rofferr roff_tr(ROFF_ARGS);
1.47 schwarze 435: static enum rofferr roff_Dd(ROFF_ARGS);
436: static enum rofferr roff_TH(ROFF_ARGS);
1.27 schwarze 437: static enum rofferr roff_TE(ROFF_ARGS);
438: static enum rofferr roff_TS(ROFF_ARGS);
1.32 schwarze 439: static enum rofferr roff_EQ(ROFF_ARGS);
440: static enum rofferr roff_EN(ROFF_ARGS);
1.27 schwarze 441: static enum rofferr roff_T_(ROFF_ARGS);
1.123 schwarze 442: static enum rofferr roff_unsupp(ROFF_ARGS);
1.16 schwarze 443: static enum rofferr roff_userdef(ROFF_ARGS);
1.1 schwarze 444:
1.138 schwarze 445: /* --- constant data ------------------------------------------------------ */
446:
1.42 schwarze 447: /* See roffhash_find() */
1.3 schwarze 448:
449: #define ASCII_HI 126
450: #define ASCII_LO 33
451: #define HASHWIDTH (ASCII_HI - ASCII_LO + 1)
452:
1.133 schwarze 453: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
454: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
455:
1.3 schwarze 456: static struct roffmac *hash[HASHWIDTH];
457:
458: static struct roffmac roffs[ROFF_MAX] = {
1.123 schwarze 459: { "ab", roff_unsupp, NULL, NULL, 0, NULL },
1.21 schwarze 460: { "ad", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 461: { "af", roff_line_ignore, NULL, NULL, 0, NULL },
462: { "aln", roff_unsupp, NULL, NULL, 0, NULL },
463: { "als", roff_unsupp, NULL, NULL, 0, NULL },
1.3 schwarze 464: { "am", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.123 schwarze 465: { "am1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.3 schwarze 466: { "ami", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.123 schwarze 467: { "ami1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.66 schwarze 468: { "as", roff_ds, NULL, NULL, 0, NULL },
1.123 schwarze 469: { "as1", roff_ds, NULL, NULL, 0, NULL },
470: { "asciify", roff_unsupp, NULL, NULL, 0, NULL },
471: { "backtrace", roff_line_ignore, NULL, NULL, 0, NULL },
472: { "bd", roff_line_ignore, NULL, NULL, 0, NULL },
473: { "bleedat", roff_line_ignore, NULL, NULL, 0, NULL },
474: { "blm", roff_unsupp, NULL, NULL, 0, NULL },
475: { "box", roff_unsupp, NULL, NULL, 0, NULL },
476: { "boxa", roff_unsupp, NULL, NULL, 0, NULL },
477: { "bp", roff_line_ignore, NULL, NULL, 0, NULL },
478: { "BP", roff_unsupp, NULL, NULL, 0, NULL },
479: { "break", roff_unsupp, NULL, NULL, 0, NULL },
480: { "breakchar", roff_line_ignore, NULL, NULL, 0, NULL },
481: { "brnl", roff_line_ignore, NULL, NULL, 0, NULL },
482: { "brp", roff_brp, NULL, NULL, 0, NULL },
483: { "brpnl", roff_line_ignore, NULL, NULL, 0, NULL },
484: { "c2", roff_unsupp, NULL, NULL, 0, NULL },
1.48 schwarze 485: { "cc", roff_cc, NULL, NULL, 0, NULL },
1.67 schwarze 486: { "ce", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 487: { "cf", roff_insec, NULL, NULL, 0, NULL },
488: { "cflags", roff_line_ignore, NULL, NULL, 0, NULL },
489: { "ch", roff_line_ignore, NULL, NULL, 0, NULL },
490: { "char", roff_unsupp, NULL, NULL, 0, NULL },
491: { "chop", roff_unsupp, NULL, NULL, 0, NULL },
492: { "class", roff_line_ignore, NULL, NULL, 0, NULL },
493: { "close", roff_insec, NULL, NULL, 0, NULL },
494: { "CL", roff_unsupp, NULL, NULL, 0, NULL },
495: { "color", roff_line_ignore, NULL, NULL, 0, NULL },
496: { "composite", roff_unsupp, NULL, NULL, 0, NULL },
497: { "continue", roff_unsupp, NULL, NULL, 0, NULL },
498: { "cp", roff_line_ignore, NULL, NULL, 0, NULL },
499: { "cropat", roff_line_ignore, NULL, NULL, 0, NULL },
500: { "cs", roff_line_ignore, NULL, NULL, 0, NULL },
501: { "cu", roff_line_ignore, NULL, NULL, 0, NULL },
502: { "da", roff_unsupp, NULL, NULL, 0, NULL },
503: { "dch", roff_unsupp, NULL, NULL, 0, NULL },
504: { "Dd", roff_Dd, NULL, NULL, 0, NULL },
1.3 schwarze 505: { "de", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.123 schwarze 506: { "de1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
507: { "defcolor", roff_line_ignore, NULL, NULL, 0, NULL },
1.3 schwarze 508: { "dei", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.123 schwarze 509: { "dei1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
510: { "device", roff_unsupp, NULL, NULL, 0, NULL },
511: { "devicem", roff_unsupp, NULL, NULL, 0, NULL },
512: { "di", roff_unsupp, NULL, NULL, 0, NULL },
513: { "do", roff_unsupp, NULL, NULL, 0, NULL },
1.7 schwarze 514: { "ds", roff_ds, NULL, NULL, 0, NULL },
1.123 schwarze 515: { "ds1", roff_ds, NULL, NULL, 0, NULL },
516: { "dwh", roff_unsupp, NULL, NULL, 0, NULL },
517: { "dt", roff_unsupp, NULL, NULL, 0, NULL },
518: { "ec", roff_unsupp, NULL, NULL, 0, NULL },
519: { "ecr", roff_unsupp, NULL, NULL, 0, NULL },
520: { "ecs", roff_unsupp, NULL, NULL, 0, NULL },
1.3 schwarze 521: { "el", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
1.123 schwarze 522: { "em", roff_unsupp, NULL, NULL, 0, NULL },
523: { "EN", roff_EN, NULL, NULL, 0, NULL },
524: { "eo", roff_unsupp, NULL, NULL, 0, NULL },
525: { "EP", roff_unsupp, NULL, NULL, 0, NULL },
526: { "EQ", roff_EQ, NULL, NULL, 0, NULL },
527: { "errprint", roff_line_ignore, NULL, NULL, 0, NULL },
528: { "ev", roff_unsupp, NULL, NULL, 0, NULL },
529: { "evc", roff_unsupp, NULL, NULL, 0, NULL },
530: { "ex", roff_unsupp, NULL, NULL, 0, NULL },
531: { "fallback", roff_line_ignore, NULL, NULL, 0, NULL },
1.58 schwarze 532: { "fam", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 533: { "fc", roff_unsupp, NULL, NULL, 0, NULL },
534: { "fchar", roff_unsupp, NULL, NULL, 0, NULL },
535: { "fcolor", roff_line_ignore, NULL, NULL, 0, NULL },
536: { "fdeferlig", roff_line_ignore, NULL, NULL, 0, NULL },
537: { "feature", roff_line_ignore, NULL, NULL, 0, NULL },
538: { "fkern", roff_line_ignore, NULL, NULL, 0, NULL },
539: { "fl", roff_line_ignore, NULL, NULL, 0, NULL },
540: { "flig", roff_line_ignore, NULL, NULL, 0, NULL },
541: { "fp", roff_line_ignore, NULL, NULL, 0, NULL },
542: { "fps", roff_line_ignore, NULL, NULL, 0, NULL },
543: { "fschar", roff_unsupp, NULL, NULL, 0, NULL },
544: { "fspacewidth", roff_line_ignore, NULL, NULL, 0, NULL },
545: { "fspecial", roff_line_ignore, NULL, NULL, 0, NULL },
546: { "ftr", roff_line_ignore, NULL, NULL, 0, NULL },
547: { "fzoom", roff_line_ignore, NULL, NULL, 0, NULL },
548: { "gcolor", roff_line_ignore, NULL, NULL, 0, NULL },
549: { "hc", roff_line_ignore, NULL, NULL, 0, NULL },
550: { "hcode", roff_line_ignore, NULL, NULL, 0, NULL },
551: { "hidechar", roff_line_ignore, NULL, NULL, 0, NULL },
552: { "hla", roff_line_ignore, NULL, NULL, 0, NULL },
553: { "hlm", roff_line_ignore, NULL, NULL, 0, NULL },
554: { "hpf", roff_line_ignore, NULL, NULL, 0, NULL },
555: { "hpfa", roff_line_ignore, NULL, NULL, 0, NULL },
556: { "hpfcode", roff_line_ignore, NULL, NULL, 0, NULL },
1.59 schwarze 557: { "hw", roff_line_ignore, NULL, NULL, 0, NULL },
1.21 schwarze 558: { "hy", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 559: { "hylang", roff_line_ignore, NULL, NULL, 0, NULL },
560: { "hylen", roff_line_ignore, NULL, NULL, 0, NULL },
561: { "hym", roff_line_ignore, NULL, NULL, 0, NULL },
562: { "hypp", roff_line_ignore, NULL, NULL, 0, NULL },
563: { "hys", roff_line_ignore, NULL, NULL, 0, NULL },
1.3 schwarze 564: { "ie", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
565: { "if", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
566: { "ig", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.123 schwarze 567: { "index", roff_unsupp, NULL, NULL, 0, NULL },
1.51 schwarze 568: { "it", roff_it, NULL, NULL, 0, NULL },
1.123 schwarze 569: { "itc", roff_unsupp, NULL, NULL, 0, NULL },
570: { "IX", roff_line_ignore, NULL, NULL, 0, NULL },
571: { "kern", roff_line_ignore, NULL, NULL, 0, NULL },
572: { "kernafter", roff_line_ignore, NULL, NULL, 0, NULL },
573: { "kernbefore", roff_line_ignore, NULL, NULL, 0, NULL },
574: { "kernpair", roff_line_ignore, NULL, NULL, 0, NULL },
575: { "lc", roff_unsupp, NULL, NULL, 0, NULL },
576: { "lc_ctype", roff_unsupp, NULL, NULL, 0, NULL },
577: { "lds", roff_unsupp, NULL, NULL, 0, NULL },
578: { "length", roff_unsupp, NULL, NULL, 0, NULL },
579: { "letadj", roff_line_ignore, NULL, NULL, 0, NULL },
580: { "lf", roff_insec, NULL, NULL, 0, NULL },
581: { "lg", roff_line_ignore, NULL, NULL, 0, NULL },
582: { "lhang", roff_line_ignore, NULL, NULL, 0, NULL },
583: { "linetabs", roff_unsupp, NULL, NULL, 0, NULL },
584: { "lnr", roff_unsupp, NULL, NULL, 0, NULL },
585: { "lnrf", roff_unsupp, NULL, NULL, 0, NULL },
586: { "lpfx", roff_unsupp, NULL, NULL, 0, NULL },
587: { "ls", roff_line_ignore, NULL, NULL, 0, NULL },
588: { "lsm", roff_unsupp, NULL, NULL, 0, NULL },
589: { "lt", roff_line_ignore, NULL, NULL, 0, NULL },
590: { "mc", roff_line_ignore, NULL, NULL, 0, NULL },
591: { "mediasize", roff_line_ignore, NULL, NULL, 0, NULL },
592: { "minss", roff_line_ignore, NULL, NULL, 0, NULL },
593: { "mk", roff_line_ignore, NULL, NULL, 0, NULL },
594: { "mso", roff_insec, NULL, NULL, 0, NULL },
1.128 schwarze 595: { "na", roff_line_ignore, NULL, NULL, 0, NULL },
1.21 schwarze 596: { "ne", roff_line_ignore, NULL, NULL, 0, NULL },
597: { "nh", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 598: { "nhychar", roff_line_ignore, NULL, NULL, 0, NULL },
599: { "nm", roff_unsupp, NULL, NULL, 0, NULL },
600: { "nn", roff_unsupp, NULL, NULL, 0, NULL },
601: { "nop", roff_unsupp, NULL, NULL, 0, NULL },
1.14 schwarze 602: { "nr", roff_nr, NULL, NULL, 0, NULL },
1.123 schwarze 603: { "nrf", roff_unsupp, NULL, NULL, 0, NULL },
604: { "nroff", roff_line_ignore, NULL, NULL, 0, NULL },
1.31 schwarze 605: { "ns", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 606: { "nx", roff_insec, NULL, NULL, 0, NULL },
607: { "open", roff_insec, NULL, NULL, 0, NULL },
608: { "opena", roff_insec, NULL, NULL, 0, NULL },
609: { "os", roff_line_ignore, NULL, NULL, 0, NULL },
610: { "output", roff_unsupp, NULL, NULL, 0, NULL },
611: { "padj", roff_line_ignore, NULL, NULL, 0, NULL },
612: { "papersize", roff_line_ignore, NULL, NULL, 0, NULL },
613: { "pc", roff_line_ignore, NULL, NULL, 0, NULL },
614: { "pev", roff_line_ignore, NULL, NULL, 0, NULL },
615: { "pi", roff_insec, NULL, NULL, 0, NULL },
616: { "PI", roff_unsupp, NULL, NULL, 0, NULL },
1.101 schwarze 617: { "pl", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 618: { "pm", roff_line_ignore, NULL, NULL, 0, NULL },
619: { "pn", roff_line_ignore, NULL, NULL, 0, NULL },
620: { "pnr", roff_line_ignore, NULL, NULL, 0, NULL },
621: { "po", roff_line_ignore, NULL, NULL, 0, NULL },
1.31 schwarze 622: { "ps", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 623: { "psbb", roff_unsupp, NULL, NULL, 0, NULL },
1.127 schwarze 624: { "pshape", roff_unsupp, NULL, NULL, 0, NULL },
1.123 schwarze 625: { "pso", roff_insec, NULL, NULL, 0, NULL },
626: { "ptr", roff_line_ignore, NULL, NULL, 0, NULL },
627: { "pvs", roff_line_ignore, NULL, NULL, 0, NULL },
628: { "rchar", roff_unsupp, NULL, NULL, 0, NULL },
629: { "rd", roff_line_ignore, NULL, NULL, 0, NULL },
630: { "recursionlimit", roff_line_ignore, NULL, NULL, 0, NULL },
631: { "return", roff_unsupp, NULL, NULL, 0, NULL },
632: { "rfschar", roff_unsupp, NULL, NULL, 0, NULL },
633: { "rhang", roff_line_ignore, NULL, NULL, 0, NULL },
634: { "rj", roff_line_ignore, NULL, NULL, 0, NULL },
1.29 schwarze 635: { "rm", roff_rm, NULL, NULL, 0, NULL },
1.123 schwarze 636: { "rn", roff_unsupp, NULL, NULL, 0, NULL },
637: { "rnn", roff_unsupp, NULL, NULL, 0, NULL },
1.76 schwarze 638: { "rr", roff_rr, NULL, NULL, 0, NULL },
1.123 schwarze 639: { "rs", roff_line_ignore, NULL, NULL, 0, NULL },
640: { "rt", roff_line_ignore, NULL, NULL, 0, NULL },
641: { "schar", roff_unsupp, NULL, NULL, 0, NULL },
642: { "sentchar", roff_line_ignore, NULL, NULL, 0, NULL },
643: { "shc", roff_line_ignore, NULL, NULL, 0, NULL },
644: { "shift", roff_unsupp, NULL, NULL, 0, NULL },
645: { "sizes", roff_line_ignore, NULL, NULL, 0, NULL },
1.14 schwarze 646: { "so", roff_so, NULL, NULL, 0, NULL },
1.123 schwarze 647: { "spacewidth", roff_line_ignore, NULL, NULL, 0, NULL },
648: { "special", roff_line_ignore, NULL, NULL, 0, NULL },
649: { "spreadwarn", roff_line_ignore, NULL, NULL, 0, NULL },
650: { "ss", roff_line_ignore, NULL, NULL, 0, NULL },
651: { "sty", roff_line_ignore, NULL, NULL, 0, NULL },
652: { "substring", roff_unsupp, NULL, NULL, 0, NULL },
653: { "sv", roff_line_ignore, NULL, NULL, 0, NULL },
654: { "sy", roff_insec, NULL, NULL, 0, NULL },
655: { "T&", roff_T_, NULL, NULL, 0, NULL },
1.127 schwarze 656: { "ta", roff_unsupp, NULL, NULL, 0, NULL },
1.123 schwarze 657: { "tc", roff_unsupp, NULL, NULL, 0, NULL },
658: { "TE", roff_TE, NULL, NULL, 0, NULL },
659: { "TH", roff_TH, NULL, NULL, 0, NULL },
1.127 schwarze 660: { "ti", roff_unsupp, NULL, NULL, 0, NULL },
1.123 schwarze 661: { "tkf", roff_line_ignore, NULL, NULL, 0, NULL },
662: { "tl", roff_unsupp, NULL, NULL, 0, NULL },
663: { "tm", roff_line_ignore, NULL, NULL, 0, NULL },
664: { "tm1", roff_line_ignore, NULL, NULL, 0, NULL },
665: { "tmc", roff_line_ignore, NULL, NULL, 0, NULL },
1.42 schwarze 666: { "tr", roff_tr, NULL, NULL, 0, NULL },
1.123 schwarze 667: { "track", roff_line_ignore, NULL, NULL, 0, NULL },
668: { "transchar", roff_line_ignore, NULL, NULL, 0, NULL },
669: { "trf", roff_insec, NULL, NULL, 0, NULL },
670: { "trimat", roff_line_ignore, NULL, NULL, 0, NULL },
671: { "trin", roff_unsupp, NULL, NULL, 0, NULL },
672: { "trnt", roff_unsupp, NULL, NULL, 0, NULL },
673: { "troff", roff_line_ignore, NULL, NULL, 0, NULL },
1.27 schwarze 674: { "TS", roff_TS, NULL, NULL, 0, NULL },
1.123 schwarze 675: { "uf", roff_line_ignore, NULL, NULL, 0, NULL },
676: { "ul", roff_line_ignore, NULL, NULL, 0, NULL },
677: { "unformat", roff_unsupp, NULL, NULL, 0, NULL },
678: { "unwatch", roff_line_ignore, NULL, NULL, 0, NULL },
679: { "unwatchn", roff_line_ignore, NULL, NULL, 0, NULL },
680: { "vpt", roff_line_ignore, NULL, NULL, 0, NULL },
681: { "vs", roff_line_ignore, NULL, NULL, 0, NULL },
682: { "warn", roff_line_ignore, NULL, NULL, 0, NULL },
683: { "warnscale", roff_line_ignore, NULL, NULL, 0, NULL },
684: { "watch", roff_line_ignore, NULL, NULL, 0, NULL },
685: { "watchlength", roff_line_ignore, NULL, NULL, 0, NULL },
686: { "watchn", roff_line_ignore, NULL, NULL, 0, NULL },
687: { "wh", roff_unsupp, NULL, NULL, 0, NULL },
688: { "while", roff_unsupp, NULL, NULL, 0, NULL },
689: { "write", roff_insec, NULL, NULL, 0, NULL },
690: { "writec", roff_insec, NULL, NULL, 0, NULL },
691: { "writem", roff_insec, NULL, NULL, 0, NULL },
692: { "xflag", roff_line_ignore, NULL, NULL, 0, NULL },
1.3 schwarze 693: { ".", roff_cblock, NULL, NULL, 0, NULL },
1.16 schwarze 694: { NULL, roff_userdef, NULL, NULL, 0, NULL },
1.1 schwarze 695: };
696:
1.73 schwarze 697: /* not currently implemented: Ds em Eq LP Me PP pp Or Rd Sf SH */
1.47 schwarze 698: const char *const __mdoc_reserved[] = {
699: "Ac", "Ad", "An", "Ao", "Ap", "Aq", "Ar", "At",
700: "Bc", "Bd", "Bf", "Bk", "Bl", "Bo", "Bq",
701: "Brc", "Bro", "Brq", "Bsx", "Bt", "Bx",
702: "Cd", "Cm", "Db", "Dc", "Dd", "Dl", "Do", "Dq",
1.73 schwarze 703: "Dt", "Dv", "Dx", "D1",
704: "Ec", "Ed", "Ef", "Ek", "El", "Em",
705: "En", "Eo", "Er", "Es", "Ev", "Ex",
1.47 schwarze 706: "Fa", "Fc", "Fd", "Fl", "Fn", "Fo", "Fr", "Ft", "Fx",
1.73 schwarze 707: "Hf", "Ic", "In", "It", "Lb", "Li", "Lk", "Lp",
708: "Ms", "Mt", "Nd", "Nm", "No", "Ns", "Nx",
1.47 schwarze 709: "Oc", "Oo", "Op", "Os", "Ot", "Ox",
1.73 schwarze 710: "Pa", "Pc", "Pf", "Po", "Pp", "Pq",
711: "Qc", "Ql", "Qo", "Qq", "Re", "Rs", "Rv",
712: "Sc", "Sh", "Sm", "So", "Sq",
1.47 schwarze 713: "Ss", "St", "Sx", "Sy",
714: "Ta", "Tn", "Ud", "Ux", "Va", "Vt", "Xc", "Xo", "Xr",
1.73 schwarze 715: "%A", "%B", "%C", "%D", "%I", "%J", "%N", "%O",
1.47 schwarze 716: "%P", "%Q", "%R", "%T", "%U", "%V",
717: NULL
718: };
719:
1.73 schwarze 720: /* not currently implemented: BT DE DS ME MT PT SY TQ YS */
1.47 schwarze 721: const char *const __man_reserved[] = {
1.73 schwarze 722: "AT", "B", "BI", "BR", "DT",
723: "EE", "EN", "EQ", "EX", "HP", "I", "IB", "IP", "IR",
724: "LP", "OP", "P", "PD", "PP",
725: "R", "RB", "RE", "RI", "RS", "SB", "SH", "SM", "SS",
726: "TE", "TH", "TP", "TS", "T&", "UC", "UE", "UR",
1.47 schwarze 727: NULL
728: };
729:
1.37 schwarze 730: /* Array of injected predefined strings. */
731: #define PREDEFS_MAX 38
732: static const struct predef predefs[PREDEFS_MAX] = {
733: #include "predefs.in"
734: };
735:
1.42 schwarze 736: /* See roffhash_find() */
1.3 schwarze 737: #define ROFF_HASH(p) (p[0] - ASCII_LO)
738:
1.51 schwarze 739: static int roffit_lines; /* number of lines to delay */
740: static char *roffit_macro; /* nil-terminated macro line */
741:
1.80 schwarze 742:
1.138 schwarze 743: /* --- request table ------------------------------------------------------ */
744:
1.3 schwarze 745: static void
1.42 schwarze 746: roffhash_init(void)
1.3 schwarze 747: {
748: struct roffmac *n;
749: int buc, i;
750:
1.16 schwarze 751: for (i = 0; i < (int)ROFF_USERDEF; i++) {
1.3 schwarze 752: assert(roffs[i].name[0] >= ASCII_LO);
753: assert(roffs[i].name[0] <= ASCII_HI);
754:
755: buc = ROFF_HASH(roffs[i].name);
756:
757: if (NULL != (n = hash[buc])) {
758: for ( ; n->next; n = n->next)
759: /* Do nothing. */ ;
760: n->next = &roffs[i];
761: } else
762: hash[buc] = &roffs[i];
763: }
764: }
765:
1.1 schwarze 766: /*
767: * Look up a roff token by its name. Returns ROFF_MAX if no macro by
768: * the nil-terminated string name could be found.
769: */
770: static enum rofft
1.42 schwarze 771: roffhash_find(const char *p, size_t s)
1.1 schwarze 772: {
1.3 schwarze 773: int buc;
774: struct roffmac *n;
1.1 schwarze 775:
1.3 schwarze 776: /*
777: * libroff has an extremely simple hashtable, for the time
778: * being, which simply keys on the first character, which must
779: * be printable, then walks a chain. It works well enough until
780: * optimised.
781: */
782:
783: if (p[0] < ASCII_LO || p[0] > ASCII_HI)
784: return(ROFF_MAX);
785:
786: buc = ROFF_HASH(p);
787:
788: if (NULL == (n = hash[buc]))
789: return(ROFF_MAX);
790: for ( ; n; n = n->next)
1.16 schwarze 791: if (0 == strncmp(n->name, p, s) && '\0' == n->name[(int)s])
1.3 schwarze 792: return((enum rofft)(n - roffs));
1.1 schwarze 793:
794: return(ROFF_MAX);
795: }
796:
1.138 schwarze 797: /* --- stack of request blocks -------------------------------------------- */
798:
1.1 schwarze 799: /*
800: * Pop the current node off of the stack of roff instructions currently
801: * pending.
802: */
803: static void
804: roffnode_pop(struct roff *r)
805: {
806: struct roffnode *p;
807:
1.2 schwarze 808: assert(r->last);
1.80 schwarze 809: p = r->last;
1.2 schwarze 810:
811: r->last = r->last->parent;
1.16 schwarze 812: free(p->name);
813: free(p->end);
1.1 schwarze 814: free(p);
815: }
816:
817: /*
818: * Push a roff node onto the instruction stack. This must later be
819: * removed with roffnode_pop().
820: */
1.11 schwarze 821: static void
1.16 schwarze 822: roffnode_push(struct roff *r, enum rofft tok, const char *name,
823: int line, int col)
1.1 schwarze 824: {
825: struct roffnode *p;
826:
1.11 schwarze 827: p = mandoc_calloc(1, sizeof(struct roffnode));
1.1 schwarze 828: p->tok = tok;
1.16 schwarze 829: if (name)
830: p->name = mandoc_strdup(name);
1.1 schwarze 831: p->parent = r->last;
832: p->line = line;
833: p->col = col;
1.71 schwarze 834: p->rule = p->parent ? p->parent->rule : 0;
1.1 schwarze 835:
836: r->last = p;
837: }
838:
1.138 schwarze 839: /* --- roff parser state data management ---------------------------------- */
840:
1.1 schwarze 841: static void
842: roff_free1(struct roff *r)
843: {
1.49 schwarze 844: struct tbl_node *tbl;
1.32 schwarze 845: struct eqn_node *e;
1.42 schwarze 846: int i;
1.27 schwarze 847:
1.49 schwarze 848: while (NULL != (tbl = r->first_tbl)) {
849: r->first_tbl = tbl->next;
850: tbl_free(tbl);
1.27 schwarze 851: }
852: r->first_tbl = r->last_tbl = r->tbl = NULL;
1.1 schwarze 853:
1.32 schwarze 854: while (NULL != (e = r->first_eqn)) {
855: r->first_eqn = e->next;
856: eqn_free(e);
857: }
858: r->first_eqn = r->last_eqn = r->eqn = NULL;
859:
1.1 schwarze 860: while (r->last)
861: roffnode_pop(r);
1.27 schwarze 862:
1.96 schwarze 863: free (r->rstack);
864: r->rstack = NULL;
865: r->rstacksz = 0;
866: r->rstackpos = -1;
867:
868: roff_freereg(r->regtab);
869: r->regtab = NULL;
870:
1.42 schwarze 871: roff_freestr(r->strtab);
872: roff_freestr(r->xmbtab);
873: r->strtab = r->xmbtab = NULL;
874:
875: if (r->xtab)
876: for (i = 0; i < 128; i++)
877: free(r->xtab[i].p);
878: free(r->xtab);
879: r->xtab = NULL;
1.1 schwarze 880: }
881:
882: void
883: roff_reset(struct roff *r)
884: {
885:
886: roff_free1(r);
1.99 schwarze 887: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.48 schwarze 888: r->control = 0;
1.1 schwarze 889: }
890:
891: void
892: roff_free(struct roff *r)
893: {
894:
895: roff_free1(r);
896: free(r);
897: }
898:
899: struct roff *
1.109 schwarze 900: roff_alloc(struct mparse *parse, const struct mchars *mchars, int options)
1.1 schwarze 901: {
902: struct roff *r;
903:
1.11 schwarze 904: r = mandoc_calloc(1, sizeof(struct roff));
1.35 schwarze 905: r->parse = parse;
1.109 schwarze 906: r->mchars = mchars;
1.72 schwarze 907: r->options = options;
1.99 schwarze 908: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.2 schwarze 909: r->rstackpos = -1;
1.80 schwarze 910:
1.42 schwarze 911: roffhash_init();
1.37 schwarze 912:
1.1 schwarze 913: return(r);
1.137 schwarze 914: }
915:
1.138 schwarze 916: /* --- syntax tree state data management ---------------------------------- */
917:
1.137 schwarze 918: static void
919: roff_man_free1(struct roff_man *man)
920: {
921:
1.138 schwarze 922: if (man->first != NULL)
923: roff_node_delete(man, man->first);
1.137 schwarze 924: free(man->meta.msec);
925: free(man->meta.vol);
926: free(man->meta.os);
927: free(man->meta.arch);
928: free(man->meta.title);
929: free(man->meta.name);
930: free(man->meta.date);
931: }
932:
933: static void
934: roff_man_alloc1(struct roff_man *man)
935: {
936:
937: memset(&man->meta, 0, sizeof(man->meta));
938: man->first = mandoc_calloc(1, sizeof(*man->first));
939: man->first->type = ROFFT_ROOT;
940: man->last = man->first;
941: man->last_es = NULL;
942: man->flags = 0;
943: man->macroset = MACROSET_NONE;
944: man->lastsec = man->lastnamed = SEC_NONE;
945: man->next = ROFF_NEXT_CHILD;
946: }
947:
948: void
949: roff_man_reset(struct roff_man *man)
950: {
951:
952: roff_man_free1(man);
953: roff_man_alloc1(man);
954: }
955:
956: void
957: roff_man_free(struct roff_man *man)
958: {
959:
960: roff_man_free1(man);
961: free(man);
962: }
963:
964: struct roff_man *
965: roff_man_alloc(struct roff *roff, struct mparse *parse,
966: const char *defos, int quick)
967: {
968: struct roff_man *man;
969:
970: man = mandoc_calloc(1, sizeof(*man));
971: man->parse = parse;
972: man->roff = roff;
973: man->defos = defos;
974: man->quick = quick;
975: roff_man_alloc1(man);
976: return(man);
1.1 schwarze 977: }
978:
1.138 schwarze 979: /* --- syntax tree handling ----------------------------------------------- */
980:
981: struct roff_node *
982: roff_node_alloc(struct roff_man *man, int line, int pos,
983: enum roff_type type, int tok)
984: {
985: struct roff_node *n;
986:
987: n = mandoc_calloc(1, sizeof(*n));
988: n->line = line;
989: n->pos = pos;
990: n->tok = tok;
991: n->type = type;
992: n->sec = man->lastsec;
993:
994: if (man->flags & MDOC_SYNOPSIS)
995: n->flags |= MDOC_SYNPRETTY;
996: else
997: n->flags &= ~MDOC_SYNPRETTY;
998: if (man->flags & MDOC_NEWLINE)
999: n->flags |= MDOC_LINE;
1000: man->flags &= ~MDOC_NEWLINE;
1001:
1002: return(n);
1003: }
1004:
1005: void
1006: roff_node_append(struct roff_man *man, struct roff_node *n)
1007: {
1008:
1009: switch (man->next) {
1010: case ROFF_NEXT_SIBLING:
1011: man->last->next = n;
1012: n->prev = man->last;
1013: n->parent = man->last->parent;
1014: break;
1015: case ROFF_NEXT_CHILD:
1016: man->last->child = n;
1017: n->parent = man->last;
1018: break;
1019: default:
1020: abort();
1021: /* NOTREACHED */
1022: }
1023: n->parent->nchild++;
1.142 schwarze 1024: n->parent->last = n;
1.138 schwarze 1025:
1026: /*
1027: * Copy over the normalised-data pointer of our parent. Not
1028: * everybody has one, but copying a null pointer is fine.
1029: */
1030:
1031: switch (n->type) {
1032: case ROFFT_BODY:
1033: if (n->end != ENDBODY_NOT)
1034: break;
1035: /* FALLTHROUGH */
1036: case ROFFT_TAIL:
1037: /* FALLTHROUGH */
1038: case ROFFT_HEAD:
1039: n->norm = n->parent->norm;
1040: break;
1041: default:
1042: break;
1043: }
1044:
1045: if (man->macroset == MACROSET_MDOC)
1046: mdoc_valid_pre(man, n);
1047:
1048: switch (n->type) {
1049: case ROFFT_HEAD:
1050: assert(n->parent->type == ROFFT_BLOCK);
1051: n->parent->head = n;
1052: break;
1053: case ROFFT_BODY:
1054: if (n->end)
1055: break;
1056: assert(n->parent->type == ROFFT_BLOCK);
1057: n->parent->body = n;
1058: break;
1059: case ROFFT_TAIL:
1060: assert(n->parent->type == ROFFT_BLOCK);
1061: n->parent->tail = n;
1062: break;
1063: default:
1064: break;
1065: }
1066: man->last = n;
1067: }
1068:
1.139 schwarze 1069: void
1070: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
1071: {
1072: struct roff_node *n;
1073:
1074: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
1075: n->string = roff_strdup(man->roff, word);
1076: roff_node_append(man, n);
1077: if (man->macroset == MACROSET_MDOC)
1078: mdoc_valid_post(man);
1079: else
1080: man_valid_post(man);
1081: man->next = ROFF_NEXT_SIBLING;
1082: }
1083:
1084: void
1085: roff_word_append(struct roff_man *man, const char *word)
1086: {
1087: struct roff_node *n;
1088: char *addstr, *newstr;
1089:
1090: n = man->last;
1091: addstr = roff_strdup(man->roff, word);
1092: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
1093: free(addstr);
1094: free(n->string);
1095: n->string = newstr;
1096: man->next = ROFF_NEXT_SIBLING;
1.140 schwarze 1097: }
1098:
1099: void
1100: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
1101: {
1102: struct roff_node *n;
1103:
1104: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
1105: roff_node_append(man, n);
1106: man->next = ROFF_NEXT_CHILD;
1107: }
1108:
1109: struct roff_node *
1110: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
1111: {
1112: struct roff_node *n;
1113:
1114: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
1115: roff_node_append(man, n);
1116: man->next = ROFF_NEXT_CHILD;
1117: return(n);
1.139 schwarze 1118: }
1119:
1.138 schwarze 1120: struct roff_node *
1121: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
1122: {
1123: struct roff_node *n;
1124:
1125: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
1126: roff_node_append(man, n);
1127: man->next = ROFF_NEXT_CHILD;
1128: return(n);
1129: }
1130:
1131: struct roff_node *
1132: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1133: {
1134: struct roff_node *n;
1135:
1136: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1137: roff_node_append(man, n);
1138: man->next = ROFF_NEXT_CHILD;
1139: return(n);
1.139 schwarze 1140: }
1141:
1142: void
1143: roff_addeqn(struct roff_man *man, const struct eqn *eqn)
1144: {
1145: struct roff_node *n;
1146:
1147: n = roff_node_alloc(man, eqn->ln, eqn->pos, ROFFT_EQN, TOKEN_NONE);
1148: n->eqn = eqn;
1149: if (eqn->ln > man->last->line)
1150: n->flags |= MDOC_LINE;
1151: roff_node_append(man, n);
1152: man->next = ROFF_NEXT_SIBLING;
1153: }
1154:
1155: void
1156: roff_addtbl(struct roff_man *man, const struct tbl_span *tbl)
1157: {
1158: struct roff_node *n;
1159:
1160: if (man->macroset == MACROSET_MAN)
1161: man_breakscope(man, TOKEN_NONE);
1162: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
1163: n->span = tbl;
1164: roff_node_append(man, n);
1165: if (man->macroset == MACROSET_MDOC)
1166: mdoc_valid_post(man);
1167: else
1168: man_valid_post(man);
1169: man->next = ROFF_NEXT_SIBLING;
1.138 schwarze 1170: }
1171:
1172: void
1173: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1174: {
1175:
1176: /* Adjust siblings. */
1177:
1178: if (n->prev)
1179: n->prev->next = n->next;
1180: if (n->next)
1181: n->next->prev = n->prev;
1182:
1183: /* Adjust parent. */
1184:
1185: if (n->parent != NULL) {
1186: n->parent->nchild--;
1187: if (n->parent->child == n)
1188: n->parent->child = n->next;
1189: if (n->parent->last == n)
1190: n->parent->last = n->prev;
1191: }
1192:
1193: /* Adjust parse point. */
1194:
1195: if (man == NULL)
1196: return;
1197: if (man->last == n) {
1198: if (n->prev == NULL) {
1199: man->last = n->parent;
1200: man->next = ROFF_NEXT_CHILD;
1201: } else {
1202: man->last = n->prev;
1203: man->next = ROFF_NEXT_SIBLING;
1204: }
1205: }
1206: if (man->first == n)
1207: man->first = NULL;
1208: }
1209:
1210: void
1211: roff_node_free(struct roff_node *n)
1212: {
1213:
1214: if (n->args != NULL)
1215: mdoc_argv_free(n->args);
1216: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1217: free(n->norm);
1218: free(n->string);
1219: free(n);
1220: }
1221:
1222: void
1223: roff_node_delete(struct roff_man *man, struct roff_node *n)
1224: {
1225:
1226: while (n->child != NULL)
1227: roff_node_delete(man, n->child);
1228: assert(n->nchild == 0);
1229: roff_node_unlink(man, n);
1230: roff_node_free(n);
1.141 schwarze 1231: }
1232:
1233: void
1234: deroff(char **dest, const struct roff_node *n)
1235: {
1236: char *cp;
1237: size_t sz;
1238:
1239: if (n->type != ROFFT_TEXT) {
1240: for (n = n->child; n != NULL; n = n->next)
1241: deroff(dest, n);
1242: return;
1243: }
1244:
1245: /* Skip leading whitespace and escape sequences. */
1246:
1247: cp = n->string;
1248: while (*cp != '\0') {
1249: if ('\\' == *cp) {
1250: cp++;
1251: mandoc_escape((const char **)&cp, NULL, NULL);
1252: } else if (isspace((unsigned char)*cp))
1253: cp++;
1254: else
1255: break;
1256: }
1257:
1258: /* Skip trailing whitespace. */
1259:
1260: for (sz = strlen(cp); sz; sz--)
1261: if ( ! isspace((unsigned char)cp[sz-1]))
1262: break;
1263:
1264: /* Skip empty strings. */
1265:
1266: if (sz == 0)
1267: return;
1268:
1269: if (*dest == NULL) {
1270: *dest = mandoc_strndup(cp, sz);
1271: return;
1272: }
1273:
1274: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1275: free(*dest);
1276: *dest = cp;
1.138 schwarze 1277: }
1278:
1279: /* --- main functions of the roff parser ---------------------------------- */
1280:
1.8 schwarze 1281: /*
1.79 schwarze 1282: * In the current line, expand escape sequences that tend to get
1283: * used in numerical expressions and conditional requests.
1284: * Also check the syntax of the remaining escape sequences.
1.8 schwarze 1285: */
1.45 schwarze 1286: static enum rofferr
1.110 schwarze 1287: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.8 schwarze 1288: {
1.81 schwarze 1289: char ubuf[24]; /* buffer to print the number */
1.78 schwarze 1290: const char *start; /* start of the string to process */
1.82 schwarze 1291: char *stesc; /* start of an escape sequence ('\\') */
1.23 schwarze 1292: const char *stnam; /* start of the name, after "[(*" */
1293: const char *cp; /* end of the name, e.g. before ']' */
1294: const char *res; /* the string to be substituted */
1.110 schwarze 1295: char *nbuf; /* new buffer to copy buf->buf to */
1.53 schwarze 1296: size_t maxl; /* expected length of the escape name */
1297: size_t naml; /* actual length of the escape name */
1.109 schwarze 1298: enum mandoc_esc esc; /* type of the escape sequence */
1299: int inaml; /* length returned from mandoc_escape() */
1.53 schwarze 1300: int expand_count; /* to avoid infinite loops */
1.79 schwarze 1301: int npos; /* position in numeric expression */
1.91 schwarze 1302: int arg_complete; /* argument not interrupted by eol */
1.79 schwarze 1303: char term; /* character terminating the escape */
1.8 schwarze 1304:
1.43 schwarze 1305: expand_count = 0;
1.110 schwarze 1306: start = buf->buf + pos;
1.78 schwarze 1307: stesc = strchr(start, '\0') - 1;
1308: while (stesc-- > start) {
1.43 schwarze 1309:
1.78 schwarze 1310: /* Search backwards for the next backslash. */
1311:
1.110 schwarze 1312: if (*stesc != '\\')
1.78 schwarze 1313: continue;
1314:
1315: /* If it is escaped, skip it. */
1316:
1317: for (cp = stesc - 1; cp >= start; cp--)
1.110 schwarze 1318: if (*cp != '\\')
1.78 schwarze 1319: break;
1320:
1.110 schwarze 1321: if ((stesc - cp) % 2 == 0) {
1.82 schwarze 1322: stesc = (char *)cp;
1.78 schwarze 1323: continue;
1324: }
1.23 schwarze 1325:
1.79 schwarze 1326: /* Decide whether to expand or to check only. */
1.23 schwarze 1327:
1.79 schwarze 1328: term = '\0';
1.78 schwarze 1329: cp = stesc + 1;
1.53 schwarze 1330: switch (*cp) {
1.80 schwarze 1331: case '*':
1.53 schwarze 1332: res = NULL;
1333: break;
1.80 schwarze 1334: case 'B':
1.79 schwarze 1335: /* FALLTHROUGH */
1.80 schwarze 1336: case 'w':
1.79 schwarze 1337: term = cp[1];
1338: /* FALLTHROUGH */
1.80 schwarze 1339: case 'n':
1.53 schwarze 1340: res = ubuf;
1341: break;
1342: default:
1.109 schwarze 1343: esc = mandoc_escape(&cp, &stnam, &inaml);
1344: if (esc == ESCAPE_ERROR ||
1345: (esc == ESCAPE_SPECIAL &&
1346: mchars_spec2cp(r->mchars, stnam, inaml) < 0))
1.92 schwarze 1347: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.110 schwarze 1348: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1349: "%.*s", (int)(cp - stesc), stesc);
1.78 schwarze 1350: continue;
1.42 schwarze 1351: }
1352:
1.78 schwarze 1353: if (EXPAND_LIMIT < ++expand_count) {
1354: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.110 schwarze 1355: ln, (int)(stesc - buf->buf), NULL);
1.78 schwarze 1356: return(ROFF_IGN);
1357: }
1.23 schwarze 1358:
1359: /*
1360: * The third character decides the length
1.53 schwarze 1361: * of the name of the string or register.
1.23 schwarze 1362: * Save a pointer to the name.
1363: */
1364:
1.110 schwarze 1365: if (term == '\0') {
1.79 schwarze 1366: switch (*++cp) {
1.80 schwarze 1367: case '\0':
1.79 schwarze 1368: maxl = 0;
1369: break;
1.80 schwarze 1370: case '(':
1.79 schwarze 1371: cp++;
1372: maxl = 2;
1373: break;
1.80 schwarze 1374: case '[':
1.79 schwarze 1375: cp++;
1376: term = ']';
1377: maxl = 0;
1378: break;
1379: default:
1380: maxl = 1;
1381: break;
1382: }
1383: } else {
1384: cp += 2;
1.8 schwarze 1385: maxl = 0;
1386: }
1.23 schwarze 1387: stnam = cp;
1.8 schwarze 1388:
1.23 schwarze 1389: /* Advance to the end of the name. */
1.8 schwarze 1390:
1.125 schwarze 1391: naml = 0;
1.91 schwarze 1392: arg_complete = 1;
1.125 schwarze 1393: while (maxl == 0 || naml < maxl) {
1.110 schwarze 1394: if (*cp == '\0') {
1.92 schwarze 1395: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 1396: ln, (int)(stesc - buf->buf), stesc);
1.91 schwarze 1397: arg_complete = 0;
1.79 schwarze 1398: break;
1.42 schwarze 1399: }
1.110 schwarze 1400: if (maxl == 0 && *cp == term) {
1.79 schwarze 1401: cp++;
1.125 schwarze 1402: break;
1403: }
1404: if (*cp++ != '\\' || stesc[1] != 'w') {
1405: naml++;
1406: continue;
1407: }
1408: switch (mandoc_escape(&cp, NULL, NULL)) {
1409: case ESCAPE_SPECIAL:
1410: /* FALLTHROUGH */
1411: case ESCAPE_UNICODE:
1412: /* FALLTHROUGH */
1413: case ESCAPE_NUMBERED:
1414: /* FALLTHROUGH */
1415: case ESCAPE_OVERSTRIKE:
1416: naml++;
1417: break;
1418: default:
1.8 schwarze 1419: break;
1.79 schwarze 1420: }
1.8 schwarze 1421: }
1422:
1.23 schwarze 1423: /*
1424: * Retrieve the replacement string; if it is
1425: * undefined, resume searching for escapes.
1426: */
1427:
1.79 schwarze 1428: switch (stesc[1]) {
1.80 schwarze 1429: case '*':
1.91 schwarze 1430: if (arg_complete)
1431: res = roff_getstrn(r, stnam, naml);
1.79 schwarze 1432: break;
1.80 schwarze 1433: case 'B':
1.79 schwarze 1434: npos = 0;
1.91 schwarze 1435: ubuf[0] = arg_complete &&
1.133 schwarze 1436: roff_evalnum(r, ln, stnam, &npos,
1437: NULL, ROFFNUM_SCALE) &&
1.91 schwarze 1438: stnam + npos + 1 == cp ? '1' : '0';
1.79 schwarze 1439: ubuf[1] = '\0';
1440: break;
1.80 schwarze 1441: case 'n':
1.91 schwarze 1442: if (arg_complete)
1443: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1444: roff_getregn(r, stnam, naml));
1445: else
1446: ubuf[0] = '\0';
1.79 schwarze 1447: break;
1.80 schwarze 1448: case 'w':
1.91 schwarze 1449: /* use even incomplete args */
1.81 schwarze 1450: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.79 schwarze 1451: 24 * (int)naml);
1452: break;
1453: }
1.8 schwarze 1454:
1.110 schwarze 1455: if (res == NULL) {
1.92 schwarze 1456: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1457: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1458: "%.*s", (int)naml, stnam);
1.37 schwarze 1459: res = "";
1.118 schwarze 1460: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1461: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1462: ln, (int)(stesc - buf->buf), NULL);
1463: return(ROFF_IGN);
1.8 schwarze 1464: }
1465:
1.23 schwarze 1466: /* Replace the escape sequence by the string. */
1467:
1.82 schwarze 1468: *stesc = '\0';
1.110 schwarze 1469: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1470: buf->buf, res, cp) + 1;
1.8 schwarze 1471:
1.78 schwarze 1472: /* Prepare for the next replacement. */
1.8 schwarze 1473:
1.78 schwarze 1474: start = nbuf + pos;
1.110 schwarze 1475: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1476: free(buf->buf);
1477: buf->buf = nbuf;
1.42 schwarze 1478: }
1.45 schwarze 1479: return(ROFF_CONT);
1.42 schwarze 1480: }
1481:
1482: /*
1.51 schwarze 1483: * Process text streams:
1484: * Convert all breakable hyphens into ASCII_HYPH.
1485: * Decrement and spring input line trap.
1.42 schwarze 1486: */
1487: static enum rofferr
1.110 schwarze 1488: roff_parsetext(struct buf *buf, int pos, int *offs)
1.42 schwarze 1489: {
1490: size_t sz;
1491: const char *start;
1.51 schwarze 1492: char *p;
1493: int isz;
1.42 schwarze 1494: enum mandoc_esc esc;
1495:
1.110 schwarze 1496: start = p = buf->buf + pos;
1.42 schwarze 1497:
1.110 schwarze 1498: while (*p != '\0') {
1.42 schwarze 1499: sz = strcspn(p, "-\\");
1500: p += sz;
1501:
1.110 schwarze 1502: if (*p == '\0')
1.42 schwarze 1503: break;
1504:
1.110 schwarze 1505: if (*p == '\\') {
1.42 schwarze 1506: /* Skip over escapes. */
1507: p++;
1.62 schwarze 1508: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.110 schwarze 1509: if (esc == ESCAPE_ERROR)
1.42 schwarze 1510: break;
1.136 schwarze 1511: while (*p == '-')
1512: p++;
1.42 schwarze 1513: continue;
1514: } else if (p == start) {
1515: p++;
1516: continue;
1517: }
1518:
1.44 schwarze 1519: if (isalpha((unsigned char)p[-1]) &&
1520: isalpha((unsigned char)p[1]))
1.42 schwarze 1521: *p = ASCII_HYPH;
1522: p++;
1.8 schwarze 1523: }
1524:
1.51 schwarze 1525: /* Spring the input line trap. */
1.110 schwarze 1526: if (roffit_lines == 1) {
1527: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1528: free(buf->buf);
1529: buf->buf = p;
1530: buf->sz = isz + 1;
1.51 schwarze 1531: *offs = 0;
1532: free(roffit_macro);
1533: roffit_lines = 0;
1534: return(ROFF_REPARSE);
1.110 schwarze 1535: } else if (roffit_lines > 1)
1.51 schwarze 1536: --roffit_lines;
1.42 schwarze 1537: return(ROFF_CONT);
1.8 schwarze 1538: }
1539:
1.1 schwarze 1540: enum rofferr
1.110 schwarze 1541: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.1 schwarze 1542: {
1543: enum rofft t;
1.27 schwarze 1544: enum rofferr e;
1.110 schwarze 1545: int pos; /* parse point */
1.115 schwarze 1546: int spos; /* saved parse point for messages */
1.110 schwarze 1547: int ppos; /* original offset in buf->buf */
1548: int ctl; /* macro line (boolean) */
1549:
1550: ppos = pos = *offs;
1.1 schwarze 1551:
1.102 schwarze 1552: /* Handle in-line equation delimiters. */
1553:
1.108 schwarze 1554: if (r->tbl == NULL &&
1555: r->last_eqn != NULL && r->last_eqn->delim &&
1.102 schwarze 1556: (r->eqn == NULL || r->eqn_inline)) {
1.110 schwarze 1557: e = roff_eqndelim(r, buf, pos);
1.102 schwarze 1558: if (e == ROFF_REPARSE)
1559: return(e);
1560: assert(e == ROFF_CONT);
1561: }
1562:
1563: /* Expand some escape sequences. */
1.8 schwarze 1564:
1.110 schwarze 1565: e = roff_res(r, buf, ln, pos);
1566: if (e == ROFF_IGN)
1.45 schwarze 1567: return(e);
1.110 schwarze 1568: assert(e == ROFF_CONT);
1.8 schwarze 1569:
1.110 schwarze 1570: ctl = roff_getcontrol(r, buf->buf, &pos);
1.35 schwarze 1571:
1.8 schwarze 1572: /*
1.2 schwarze 1573: * First, if a scope is open and we're not a macro, pass the
1.124 schwarze 1574: * text through the macro's filter.
1575: * Equations process all content themselves.
1576: * Tables process almost all content themselves, but we want
1577: * to warn about macros before passing it there.
1.2 schwarze 1578: */
1579:
1.124 schwarze 1580: if (r->last != NULL && ! ctl) {
1.2 schwarze 1581: t = r->last->tok;
1582: assert(roffs[t].text);
1.110 schwarze 1583: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1584: assert(e == ROFF_IGN || e == ROFF_CONT);
1585: if (e != ROFF_CONT)
1.32 schwarze 1586: return(e);
1.54 schwarze 1587: }
1.124 schwarze 1588: if (r->eqn != NULL)
1.110 schwarze 1589: return(eqn_read(&r->eqn, ln, buf->buf, ppos, offs));
1.124 schwarze 1590: if (r->tbl != NULL && ( ! ctl || buf->buf[pos] == '\0'))
1.131 schwarze 1591: return(tbl_read(r->tbl, ln, buf->buf, ppos));
1.124 schwarze 1592: if ( ! ctl)
1.110 schwarze 1593: return(roff_parsetext(buf, pos, offs));
1.100 schwarze 1594:
1595: /* Skip empty request lines. */
1596:
1.110 schwarze 1597: if (buf->buf[pos] == '"') {
1.100 schwarze 1598: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1599: ln, pos, NULL);
1600: return(ROFF_IGN);
1.110 schwarze 1601: } else if (buf->buf[pos] == '\0')
1.100 schwarze 1602: return(ROFF_IGN);
1.2 schwarze 1603:
1604: /*
1605: * If a scope is open, go to the child handler for that macro,
1606: * as it may want to preprocess before doing anything with it.
1.32 schwarze 1607: * Don't do so if an equation is open.
1.2 schwarze 1608: */
1609:
1610: if (r->last) {
1.1 schwarze 1611: t = r->last->tok;
1612: assert(roffs[t].sub);
1.110 schwarze 1613: return((*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs));
1.2 schwarze 1614: }
1615:
1.115 schwarze 1616: /* No scope is open. This is a new request or macro. */
1617:
1618: spos = pos;
1619: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1620:
1621: /* Tables ignore most macros. */
1622:
1623: if (r->tbl != NULL && (t == ROFF_MAX || t == ROFF_TS)) {
1624: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1625: ln, pos, buf->buf + spos);
1.129 schwarze 1626: if (t == ROFF_TS)
1627: return(ROFF_IGN);
1628: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1629: pos++;
1630: while (buf->buf[pos] != '\0' && buf->buf[pos] == ' ')
1631: pos++;
1632: return(tbl_read(r->tbl, ln, buf->buf, pos));
1.115 schwarze 1633: }
1634:
1.2 schwarze 1635: /*
1.115 schwarze 1636: * This is neither a roff request nor a user-defined macro.
1637: * Let the standard macro set parsers handle it.
1.2 schwarze 1638: */
1639:
1.115 schwarze 1640: if (t == ROFF_MAX)
1.1 schwarze 1641: return(ROFF_CONT);
1.115 schwarze 1642:
1643: /* Execute a roff request or a user defined macro. */
1.1 schwarze 1644:
1.2 schwarze 1645: assert(roffs[t].proc);
1.110 schwarze 1646: return((*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs));
1.2 schwarze 1647: }
1648:
1.27 schwarze 1649: void
1.2 schwarze 1650: roff_endparse(struct roff *r)
1651: {
1.1 schwarze 1652:
1.27 schwarze 1653: if (r->last)
1.94 schwarze 1654: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1655: r->last->line, r->last->col,
1656: roffs[r->last->tok].name);
1.27 schwarze 1657:
1.32 schwarze 1658: if (r->eqn) {
1.94 schwarze 1659: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1660: r->eqn->eqn.ln, r->eqn->eqn.pos, "EQ");
1.41 schwarze 1661: eqn_end(&r->eqn);
1.32 schwarze 1662: }
1663:
1.27 schwarze 1664: if (r->tbl) {
1.94 schwarze 1665: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1666: r->tbl->line, r->tbl->pos, "TS");
1.41 schwarze 1667: tbl_end(&r->tbl);
1.27 schwarze 1668: }
1.1 schwarze 1669: }
1670:
1671: /*
1672: * Parse a roff node's type from the input buffer. This must be in the
1673: * form of ".foo xxx" in the usual way.
1674: */
1675: static enum rofft
1.87 schwarze 1676: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.1 schwarze 1677: {
1.87 schwarze 1678: char *cp;
1.16 schwarze 1679: const char *mac;
1680: size_t maclen;
1.1 schwarze 1681: enum rofft t;
1682:
1.87 schwarze 1683: cp = buf + *pos;
1684:
1685: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.1 schwarze 1686: return(ROFF_MAX);
1687:
1.87 schwarze 1688: mac = cp;
1689: maclen = roff_getname(r, &cp, ln, ppos);
1.1 schwarze 1690:
1.16 schwarze 1691: t = (r->current_string = roff_getstrn(r, mac, maclen))
1.42 schwarze 1692: ? ROFF_USERDEF : roffhash_find(mac, maclen);
1.1 schwarze 1693:
1.87 schwarze 1694: if (ROFF_MAX != t)
1695: *pos = cp - buf;
1.1 schwarze 1696:
1697: return(t);
1698: }
1699:
1.138 schwarze 1700: /* --- handling of request blocks ----------------------------------------- */
1701:
1.1 schwarze 1702: static enum rofferr
1.2 schwarze 1703: roff_cblock(ROFF_ARGS)
1.1 schwarze 1704: {
1705:
1.2 schwarze 1706: /*
1707: * A block-close `..' should only be invoked as a child of an
1708: * ignore macro, otherwise raise a warning and just ignore it.
1709: */
1710:
1.110 schwarze 1711: if (r->last == NULL) {
1.94 schwarze 1712: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1713: ln, ppos, "..");
1.2 schwarze 1714: return(ROFF_IGN);
1715: }
1.1 schwarze 1716:
1.2 schwarze 1717: switch (r->last->tok) {
1.80 schwarze 1718: case ROFF_am:
1.93 schwarze 1719: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.2 schwarze 1720: /* FALLTHROUGH */
1.80 schwarze 1721: case ROFF_ami:
1.2 schwarze 1722: /* FALLTHROUGH */
1.80 schwarze 1723: case ROFF_de:
1.23 schwarze 1724: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.2 schwarze 1725: /* FALLTHROUGH */
1.80 schwarze 1726: case ROFF_dei:
1.2 schwarze 1727: /* FALLTHROUGH */
1.80 schwarze 1728: case ROFF_ig:
1.2 schwarze 1729: break;
1730: default:
1.94 schwarze 1731: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1732: ln, ppos, "..");
1.1 schwarze 1733: return(ROFF_IGN);
1.2 schwarze 1734: }
1735:
1.110 schwarze 1736: if (buf->buf[pos] != '\0')
1.90 schwarze 1737: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 1738: ".. %s", buf->buf + pos);
1.2 schwarze 1739:
1740: roffnode_pop(r);
1741: roffnode_cleanscope(r);
1742: return(ROFF_IGN);
1743:
1744: }
1.1 schwarze 1745:
1.2 schwarze 1746: static void
1747: roffnode_cleanscope(struct roff *r)
1748: {
1.1 schwarze 1749:
1.2 schwarze 1750: while (r->last) {
1.46 schwarze 1751: if (--r->last->endspan != 0)
1.2 schwarze 1752: break;
1753: roffnode_pop(r);
1754: }
1755: }
1.1 schwarze 1756:
1.68 schwarze 1757: static void
1758: roff_ccond(struct roff *r, int ln, int ppos)
1.2 schwarze 1759: {
1.1 schwarze 1760:
1.2 schwarze 1761: if (NULL == r->last) {
1.94 schwarze 1762: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1763: ln, ppos, "\\}");
1.68 schwarze 1764: return;
1.2 schwarze 1765: }
1.1 schwarze 1766:
1.2 schwarze 1767: switch (r->last->tok) {
1.80 schwarze 1768: case ROFF_el:
1.2 schwarze 1769: /* FALLTHROUGH */
1.80 schwarze 1770: case ROFF_ie:
1.2 schwarze 1771: /* FALLTHROUGH */
1.80 schwarze 1772: case ROFF_if:
1.2 schwarze 1773: break;
1774: default:
1.94 schwarze 1775: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1776: ln, ppos, "\\}");
1.68 schwarze 1777: return;
1.2 schwarze 1778: }
1.1 schwarze 1779:
1.2 schwarze 1780: if (r->last->endspan > -1) {
1.94 schwarze 1781: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1782: ln, ppos, "\\}");
1.68 schwarze 1783: return;
1.2 schwarze 1784: }
1785:
1786: roffnode_pop(r);
1787: roffnode_cleanscope(r);
1.68 schwarze 1788: return;
1.1 schwarze 1789: }
1790:
1791: static enum rofferr
1.2 schwarze 1792: roff_block(ROFF_ARGS)
1.1 schwarze 1793: {
1.93 schwarze 1794: const char *name;
1795: char *iname, *cp;
1.86 schwarze 1796: size_t namesz;
1.16 schwarze 1797:
1.93 schwarze 1798: /* Ignore groff compatibility mode for now. */
1.2 schwarze 1799:
1.110 schwarze 1800: if (tok == ROFF_de1)
1.93 schwarze 1801: tok = ROFF_de;
1.123 schwarze 1802: else if (tok == ROFF_dei1)
1803: tok = ROFF_dei;
1.110 schwarze 1804: else if (tok == ROFF_am1)
1.93 schwarze 1805: tok = ROFF_am;
1.123 schwarze 1806: else if (tok == ROFF_ami1)
1807: tok = ROFF_ami;
1.93 schwarze 1808:
1809: /* Parse the macro name argument. */
1810:
1.110 schwarze 1811: cp = buf->buf + pos;
1812: if (tok == ROFF_ig) {
1.93 schwarze 1813: iname = NULL;
1814: namesz = 0;
1815: } else {
1816: iname = cp;
1817: namesz = roff_getname(r, &cp, ln, ppos);
1818: iname[namesz] = '\0';
1819: }
1.22 schwarze 1820:
1.93 schwarze 1821: /* Resolve the macro name argument if it is indirect. */
1.22 schwarze 1822:
1.110 schwarze 1823: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1824: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.93 schwarze 1825: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1826: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1827: "%.*s", (int)namesz, iname);
1828: namesz = 0;
1829: } else
1830: namesz = strlen(name);
1831: } else
1832: name = iname;
1.22 schwarze 1833:
1.110 schwarze 1834: if (namesz == 0 && tok != ROFF_ig) {
1.93 schwarze 1835: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1836: ln, ppos, roffs[tok].name);
1837: return(ROFF_IGN);
1838: }
1.2 schwarze 1839:
1.16 schwarze 1840: roffnode_push(r, tok, name, ln, ppos);
1841:
1842: /*
1843: * At the beginning of a `de' macro, clear the existing string
1844: * with the same name, if there is one. New content will be
1.66 schwarze 1845: * appended from roff_block_text() in multiline mode.
1.16 schwarze 1846: */
1.22 schwarze 1847:
1.110 schwarze 1848: if (tok == ROFF_de || tok == ROFF_dei)
1.86 schwarze 1849: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.2 schwarze 1850:
1.110 schwarze 1851: if (*cp == '\0')
1.2 schwarze 1852: return(ROFF_IGN);
1.1 schwarze 1853:
1.93 schwarze 1854: /* Get the custom end marker. */
1.22 schwarze 1855:
1.93 schwarze 1856: iname = cp;
1.86 schwarze 1857: namesz = roff_getname(r, &cp, ln, ppos);
1.93 schwarze 1858:
1859: /* Resolve the end marker if it is indirect. */
1860:
1.110 schwarze 1861: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1862: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.93 schwarze 1863: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1864: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1865: "%.*s", (int)namesz, iname);
1866: namesz = 0;
1867: } else
1868: namesz = strlen(name);
1869: } else
1870: name = iname;
1871:
1.86 schwarze 1872: if (namesz)
1873: r->last->end = mandoc_strndup(name, namesz);
1.2 schwarze 1874:
1.110 schwarze 1875: if (*cp != '\0')
1.90 schwarze 1876: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1877: ln, pos, ".%s ... %s", roffs[tok].name, cp);
1.1 schwarze 1878:
1879: return(ROFF_IGN);
1880: }
1881:
1882: static enum rofferr
1.2 schwarze 1883: roff_block_sub(ROFF_ARGS)
1.1 schwarze 1884: {
1.2 schwarze 1885: enum rofft t;
1886: int i, j;
1887:
1888: /*
1889: * First check whether a custom macro exists at this level. If
1890: * it does, then check against it. This is some of groff's
1891: * stranger behaviours. If we encountered a custom end-scope
1892: * tag and that tag also happens to be a "real" macro, then we
1893: * need to try interpreting it again as a real macro. If it's
1894: * not, then return ignore. Else continue.
1895: */
1896:
1897: if (r->last->end) {
1.35 schwarze 1898: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.110 schwarze 1899: if (buf->buf[i] != r->last->end[j])
1.2 schwarze 1900: break;
1.1 schwarze 1901:
1.110 schwarze 1902: if (r->last->end[j] == '\0' &&
1903: (buf->buf[i] == '\0' ||
1904: buf->buf[i] == ' ' ||
1905: buf->buf[i] == '\t')) {
1.2 schwarze 1906: roffnode_pop(r);
1907: roffnode_cleanscope(r);
1.1 schwarze 1908:
1.110 schwarze 1909: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.35 schwarze 1910: i++;
1911:
1912: pos = i;
1.110 schwarze 1913: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1914: ROFF_MAX)
1.2 schwarze 1915: return(ROFF_RERUN);
1916: return(ROFF_IGN);
1917: }
1.1 schwarze 1918: }
1919:
1.2 schwarze 1920: /*
1921: * If we have no custom end-query or lookup failed, then try
1922: * pulling it out of the hashtable.
1923: */
1.1 schwarze 1924:
1.110 schwarze 1925: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.1 schwarze 1926:
1.110 schwarze 1927: if (t != ROFF_cblock) {
1928: if (tok != ROFF_ig)
1929: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.1 schwarze 1930: return(ROFF_IGN);
1.16 schwarze 1931: }
1.1 schwarze 1932:
1.2 schwarze 1933: assert(roffs[t].proc);
1.110 schwarze 1934: return((*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs));
1.2 schwarze 1935: }
1936:
1937: static enum rofferr
1938: roff_block_text(ROFF_ARGS)
1939: {
1940:
1.110 schwarze 1941: if (tok != ROFF_ig)
1942: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.16 schwarze 1943:
1.2 schwarze 1944: return(ROFF_IGN);
1945: }
1946:
1947: static enum rofferr
1948: roff_cond_sub(ROFF_ARGS)
1949: {
1950: enum rofft t;
1.37 schwarze 1951: char *ep;
1.71 schwarze 1952: int rr;
1.2 schwarze 1953:
1954: rr = r->last->rule;
1.37 schwarze 1955: roffnode_cleanscope(r);
1.110 schwarze 1956: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.2 schwarze 1957:
1.37 schwarze 1958: /*
1.50 schwarze 1959: * Fully handle known macros when they are structurally
1960: * required or when the conditional evaluated to true.
1.5 schwarze 1961: */
1962:
1.110 schwarze 1963: if ((t != ROFF_MAX) &&
1964: (rr || roffs[t].flags & ROFFMAC_STRUCT)) {
1.50 schwarze 1965: assert(roffs[t].proc);
1.110 schwarze 1966: return((*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs));
1.50 schwarze 1967: }
1.39 schwarze 1968:
1.69 schwarze 1969: /*
1970: * If `\}' occurs on a macro line without a preceding macro,
1971: * drop the line completely.
1972: */
1973:
1.110 schwarze 1974: ep = buf->buf + pos;
1975: if (ep[0] == '\\' && ep[1] == '}')
1.71 schwarze 1976: rr = 0;
1.69 schwarze 1977:
1.50 schwarze 1978: /* Always check for the closing delimiter `\}'. */
1.39 schwarze 1979:
1.110 schwarze 1980: while ((ep = strchr(ep, '\\')) != NULL) {
1981: if (*(++ep) == '}') {
1.70 schwarze 1982: *ep = '&';
1.110 schwarze 1983: roff_ccond(r, ln, ep - buf->buf - 1);
1.70 schwarze 1984: }
1.119 schwarze 1985: if (*ep != '\0')
1986: ++ep;
1.50 schwarze 1987: }
1.71 schwarze 1988: return(rr ? ROFF_CONT : ROFF_IGN);
1.2 schwarze 1989: }
1990:
1991: static enum rofferr
1992: roff_cond_text(ROFF_ARGS)
1993: {
1.37 schwarze 1994: char *ep;
1.71 schwarze 1995: int rr;
1.2 schwarze 1996:
1997: rr = r->last->rule;
1.37 schwarze 1998: roffnode_cleanscope(r);
1.1 schwarze 1999:
1.110 schwarze 2000: ep = buf->buf + pos;
2001: while ((ep = strchr(ep, '\\')) != NULL) {
2002: if (*(++ep) == '}') {
1.70 schwarze 2003: *ep = '&';
1.110 schwarze 2004: roff_ccond(r, ln, ep - buf->buf - 1);
1.70 schwarze 2005: }
1.119 schwarze 2006: if (*ep != '\0')
2007: ++ep;
1.2 schwarze 2008: }
1.71 schwarze 2009: return(rr ? ROFF_CONT : ROFF_IGN);
1.2 schwarze 2010: }
2011:
1.138 schwarze 2012: /* --- handling of numeric and conditional expressions -------------------- */
2013:
1.77 schwarze 2014: /*
2015: * Parse a single signed integer number. Stop at the first non-digit.
2016: * If there is at least one digit, return success and advance the
2017: * parse point, else return failure and let the parse point unchanged.
2018: * Ignore overflows, treat them just like the C language.
2019: */
1.56 schwarze 2020: static int
1.133 schwarze 2021: roff_getnum(const char *v, int *pos, int *res, int flags)
1.56 schwarze 2022: {
1.133 schwarze 2023: int myres, scaled, n, p;
1.79 schwarze 2024:
2025: if (NULL == res)
2026: res = &myres;
1.56 schwarze 2027:
2028: p = *pos;
2029: n = v[p] == '-';
1.133 schwarze 2030: if (n || v[p] == '+')
1.56 schwarze 2031: p++;
2032:
1.133 schwarze 2033: if (flags & ROFFNUM_WHITE)
2034: while (isspace((unsigned char)v[p]))
2035: p++;
2036:
1.56 schwarze 2037: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.77 schwarze 2038: *res = 10 * *res + v[p] - '0';
1.56 schwarze 2039: if (p == *pos + n)
2040: return 0;
2041:
2042: if (n)
2043: *res = -*res;
2044:
1.126 schwarze 2045: /* Each number may be followed by one optional scaling unit. */
2046:
2047: switch (v[p]) {
2048: case 'f':
1.133 schwarze 2049: scaled = *res * 65536;
1.126 schwarze 2050: break;
2051: case 'i':
1.133 schwarze 2052: scaled = *res * 240;
1.126 schwarze 2053: break;
2054: case 'c':
1.133 schwarze 2055: scaled = *res * 240 / 2.54;
1.126 schwarze 2056: break;
2057: case 'v':
2058: /* FALLTROUGH */
2059: case 'P':
1.133 schwarze 2060: scaled = *res * 40;
1.126 schwarze 2061: break;
2062: case 'm':
2063: /* FALLTROUGH */
2064: case 'n':
1.133 schwarze 2065: scaled = *res * 24;
1.126 schwarze 2066: break;
2067: case 'p':
1.133 schwarze 2068: scaled = *res * 10 / 3;
1.126 schwarze 2069: break;
2070: case 'u':
1.133 schwarze 2071: scaled = *res;
1.126 schwarze 2072: break;
2073: case 'M':
1.133 schwarze 2074: scaled = *res * 6 / 25;
1.126 schwarze 2075: break;
2076: default:
1.133 schwarze 2077: scaled = *res;
1.126 schwarze 2078: p--;
2079: break;
2080: }
1.133 schwarze 2081: if (flags & ROFFNUM_SCALE)
2082: *res = scaled;
1.126 schwarze 2083:
2084: *pos = p + 1;
2085: return(1);
1.56 schwarze 2086: }
2087:
1.71 schwarze 2088: /*
2089: * Evaluate a string comparison condition.
2090: * The first character is the delimiter.
2091: * Succeed if the string up to its second occurrence
2092: * matches the string up to its third occurence.
2093: * Advance the cursor after the third occurrence
2094: * or lacking that, to the end of the line.
2095: */
2096: static int
2097: roff_evalstrcond(const char *v, int *pos)
2098: {
2099: const char *s1, *s2, *s3;
2100: int match;
2101:
2102: match = 0;
2103: s1 = v + *pos; /* initial delimiter */
2104: s2 = s1 + 1; /* for scanning the first string */
2105: s3 = strchr(s2, *s1); /* for scanning the second string */
2106:
2107: if (NULL == s3) /* found no middle delimiter */
2108: goto out;
2109:
2110: while ('\0' != *++s3) {
2111: if (*s2 != *s3) { /* mismatch */
2112: s3 = strchr(s3, *s1);
2113: break;
2114: }
2115: if (*s3 == *s1) { /* found the final delimiter */
2116: match = 1;
2117: break;
2118: }
2119: s2++;
2120: }
2121:
2122: out:
2123: if (NULL == s3)
2124: s3 = strchr(s2, '\0');
1.114 schwarze 2125: else if (*s3 != '\0')
1.71 schwarze 2126: s3++;
2127: *pos = s3 - v;
2128: return(match);
2129: }
2130:
1.77 schwarze 2131: /*
2132: * Evaluate an optionally negated single character, numerical,
2133: * or string condition.
2134: */
1.71 schwarze 2135: static int
1.143 ! schwarze 2136: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.5 schwarze 2137: {
1.143 ! schwarze 2138: char *cp, *name;
! 2139: size_t sz;
1.113 schwarze 2140: int number, savepos, wanttrue;
1.5 schwarze 2141:
1.71 schwarze 2142: if ('!' == v[*pos]) {
2143: wanttrue = 0;
2144: (*pos)++;
2145: } else
2146: wanttrue = 1;
2147:
1.5 schwarze 2148: switch (v[*pos]) {
1.112 schwarze 2149: case '\0':
2150: return(0);
1.80 schwarze 2151: case 'n':
1.71 schwarze 2152: /* FALLTHROUGH */
1.80 schwarze 2153: case 'o':
1.5 schwarze 2154: (*pos)++;
1.71 schwarze 2155: return(wanttrue);
1.80 schwarze 2156: case 'c':
1.71 schwarze 2157: /* FALLTHROUGH */
1.80 schwarze 2158: case 'd':
1.71 schwarze 2159: /* FALLTHROUGH */
1.80 schwarze 2160: case 'e':
1.5 schwarze 2161: /* FALLTHROUGH */
1.80 schwarze 2162: case 't':
1.111 schwarze 2163: /* FALLTHROUGH */
2164: case 'v':
1.5 schwarze 2165: (*pos)++;
1.71 schwarze 2166: return(!wanttrue);
1.143 ! schwarze 2167: case 'r':
! 2168: cp = name = v + ++*pos;
! 2169: sz = roff_getname(r, &cp, ln, *pos);
! 2170: *pos = cp - v;
! 2171: return((sz && roff_hasregn(r, name, sz)) == wanttrue);
1.5 schwarze 2172: default:
2173: break;
2174: }
2175:
1.113 schwarze 2176: savepos = *pos;
1.133 schwarze 2177: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.77 schwarze 2178: return((number > 0) == wanttrue);
1.113 schwarze 2179: else if (*pos == savepos)
2180: return(roff_evalstrcond(v, pos) == wanttrue);
1.77 schwarze 2181: else
1.113 schwarze 2182: return (0);
1.5 schwarze 2183: }
2184:
1.2 schwarze 2185: static enum rofferr
1.21 schwarze 2186: roff_line_ignore(ROFF_ARGS)
1.6 schwarze 2187: {
1.30 schwarze 2188:
1.21 schwarze 2189: return(ROFF_IGN);
2190: }
2191:
2192: static enum rofferr
1.123 schwarze 2193: roff_insec(ROFF_ARGS)
2194: {
2195:
2196: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
2197: ln, ppos, roffs[tok].name);
2198: return(ROFF_IGN);
2199: }
2200:
2201: static enum rofferr
2202: roff_unsupp(ROFF_ARGS)
2203: {
2204:
2205: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
2206: ln, ppos, roffs[tok].name);
2207: return(ROFF_IGN);
2208: }
2209:
2210: static enum rofferr
1.2 schwarze 2211: roff_cond(ROFF_ARGS)
2212: {
1.46 schwarze 2213:
2214: roffnode_push(r, tok, NULL, ln, ppos);
1.2 schwarze 2215:
1.80 schwarze 2216: /*
1.35 schwarze 2217: * An `.el' has no conditional body: it will consume the value
2218: * of the current rstack entry set in prior `ie' calls or
1.80 schwarze 2219: * defaults to DENY.
1.35 schwarze 2220: *
2221: * If we're not an `el', however, then evaluate the conditional.
2222: */
1.1 schwarze 2223:
1.110 schwarze 2224: r->last->rule = tok == ROFF_el ?
1.80 schwarze 2225: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.110 schwarze 2226: roff_evalcond(r, ln, buf->buf, &pos);
1.2 schwarze 2227:
1.35 schwarze 2228: /*
2229: * An if-else will put the NEGATION of the current evaluated
2230: * conditional into the stack of rules.
2231: */
2232:
1.110 schwarze 2233: if (tok == ROFF_ie) {
1.96 schwarze 2234: if (r->rstackpos + 1 == r->rstacksz) {
2235: r->rstacksz += 16;
2236: r->rstack = mandoc_reallocarray(r->rstack,
2237: r->rstacksz, sizeof(int));
1.35 schwarze 2238: }
1.71 schwarze 2239: r->rstack[++r->rstackpos] = !r->last->rule;
1.2 schwarze 2240: }
1.5 schwarze 2241:
2242: /* If the parent has false as its rule, then so do we. */
2243:
1.71 schwarze 2244: if (r->last->parent && !r->last->parent->rule)
2245: r->last->rule = 0;
1.5 schwarze 2246:
2247: /*
1.46 schwarze 2248: * Determine scope.
2249: * If there is nothing on the line after the conditional,
2250: * not even whitespace, use next-line scope.
1.5 schwarze 2251: */
1.2 schwarze 2252:
1.110 schwarze 2253: if (buf->buf[pos] == '\0') {
1.46 schwarze 2254: r->last->endspan = 2;
2255: goto out;
2256: }
2257:
1.110 schwarze 2258: while (buf->buf[pos] == ' ')
1.46 schwarze 2259: pos++;
2260:
2261: /* An opening brace requests multiline scope. */
1.2 schwarze 2262:
1.110 schwarze 2263: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.2 schwarze 2264: r->last->endspan = -1;
2265: pos += 2;
1.46 schwarze 2266: goto out;
1.80 schwarze 2267: }
1.2 schwarze 2268:
2269: /*
1.46 schwarze 2270: * Anything else following the conditional causes
2271: * single-line scope. Warn if the scope contains
2272: * nothing but trailing whitespace.
1.2 schwarze 2273: */
2274:
1.110 schwarze 2275: if (buf->buf[pos] == '\0')
1.89 schwarze 2276: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
2277: ln, ppos, roffs[tok].name);
1.2 schwarze 2278:
1.46 schwarze 2279: r->last->endspan = 1;
1.1 schwarze 2280:
1.46 schwarze 2281: out:
1.2 schwarze 2282: *offs = pos;
2283: return(ROFF_RERUN);
1.1 schwarze 2284: }
2285:
1.2 schwarze 2286: static enum rofferr
1.7 schwarze 2287: roff_ds(ROFF_ARGS)
2288: {
1.85 schwarze 2289: char *string;
2290: const char *name;
2291: size_t namesz;
1.10 schwarze 2292:
1.123 schwarze 2293: /* Ignore groff compatibility mode for now. */
2294:
2295: if (tok == ROFF_ds1)
2296: tok = ROFF_ds;
2297: else if (tok == ROFF_as1)
2298: tok = ROFF_as;
2299:
1.10 schwarze 2300: /*
1.85 schwarze 2301: * The first word is the name of the string.
2302: * If it is empty or terminated by an escape sequence,
2303: * abort the `ds' request without defining anything.
1.10 schwarze 2304: */
1.7 schwarze 2305:
1.110 schwarze 2306: name = string = buf->buf + pos;
2307: if (*name == '\0')
1.7 schwarze 2308: return(ROFF_IGN);
2309:
1.85 schwarze 2310: namesz = roff_getname(r, &string, ln, pos);
1.110 schwarze 2311: if (name[namesz] == '\\')
1.85 schwarze 2312: return(ROFF_IGN);
2313:
2314: /* Read past the initial double-quote, if any. */
1.110 schwarze 2315: if (*string == '"')
1.7 schwarze 2316: string++;
2317:
1.10 schwarze 2318: /* The rest is the value. */
1.85 schwarze 2319: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2320: ROFF_as == tok);
1.7 schwarze 2321: return(ROFF_IGN);
2322: }
2323:
1.77 schwarze 2324: /*
2325: * Parse a single operator, one or two characters long.
2326: * If the operator is recognized, return success and advance the
2327: * parse point, else return failure and let the parse point unchanged.
2328: */
2329: static int
2330: roff_getop(const char *v, int *pos, char *res)
2331: {
2332:
2333: *res = v[*pos];
2334:
2335: switch (*res) {
1.80 schwarze 2336: case '+':
1.77 schwarze 2337: /* FALLTHROUGH */
1.80 schwarze 2338: case '-':
1.77 schwarze 2339: /* FALLTHROUGH */
1.80 schwarze 2340: case '*':
1.77 schwarze 2341: /* FALLTHROUGH */
1.80 schwarze 2342: case '/':
1.77 schwarze 2343: /* FALLTHROUGH */
1.80 schwarze 2344: case '%':
1.77 schwarze 2345: /* FALLTHROUGH */
1.80 schwarze 2346: case '&':
1.77 schwarze 2347: /* FALLTHROUGH */
1.80 schwarze 2348: case ':':
1.77 schwarze 2349: break;
2350: case '<':
2351: switch (v[*pos + 1]) {
1.80 schwarze 2352: case '=':
1.77 schwarze 2353: *res = 'l';
2354: (*pos)++;
2355: break;
1.80 schwarze 2356: case '>':
1.77 schwarze 2357: *res = '!';
2358: (*pos)++;
2359: break;
1.80 schwarze 2360: case '?':
1.77 schwarze 2361: *res = 'i';
2362: (*pos)++;
2363: break;
2364: default:
2365: break;
2366: }
2367: break;
2368: case '>':
2369: switch (v[*pos + 1]) {
1.80 schwarze 2370: case '=':
1.77 schwarze 2371: *res = 'g';
2372: (*pos)++;
2373: break;
1.80 schwarze 2374: case '?':
1.77 schwarze 2375: *res = 'a';
2376: (*pos)++;
2377: break;
2378: default:
2379: break;
2380: }
2381: break;
2382: case '=':
2383: if ('=' == v[*pos + 1])
2384: (*pos)++;
2385: break;
2386: default:
2387: return(0);
2388: }
2389: (*pos)++;
2390:
2391: return(*res);
2392: }
2393:
2394: /*
2395: * Evaluate either a parenthesized numeric expression
2396: * or a single signed integer number.
2397: */
2398: static int
1.106 schwarze 2399: roff_evalpar(struct roff *r, int ln,
1.133 schwarze 2400: const char *v, int *pos, int *res, int flags)
1.77 schwarze 2401: {
2402:
2403: if ('(' != v[*pos])
1.133 schwarze 2404: return(roff_getnum(v, pos, res, flags));
1.77 schwarze 2405:
2406: (*pos)++;
1.133 schwarze 2407: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.77 schwarze 2408: return(0);
2409:
1.79 schwarze 2410: /*
2411: * Omission of the closing parenthesis
2412: * is an error in validation mode,
2413: * but ignored in evaluation mode.
2414: */
2415:
1.77 schwarze 2416: if (')' == v[*pos])
2417: (*pos)++;
1.79 schwarze 2418: else if (NULL == res)
2419: return(0);
1.77 schwarze 2420:
2421: return(1);
2422: }
2423:
2424: /*
2425: * Evaluate a complete numeric expression.
2426: * Proceed left to right, there is no concept of precedence.
2427: */
2428: static int
1.106 schwarze 2429: roff_evalnum(struct roff *r, int ln, const char *v,
1.133 schwarze 2430: int *pos, int *res, int flags)
1.77 schwarze 2431: {
2432: int mypos, operand2;
2433: char operator;
2434:
2435: if (NULL == pos) {
2436: mypos = 0;
2437: pos = &mypos;
2438: }
2439:
1.133 schwarze 2440: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2441: while (isspace((unsigned char)v[*pos]))
2442: (*pos)++;
2443:
1.133 schwarze 2444: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.77 schwarze 2445: return(0);
2446:
2447: while (1) {
1.133 schwarze 2448: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2449: while (isspace((unsigned char)v[*pos]))
2450: (*pos)++;
2451:
2452: if ( ! roff_getop(v, pos, &operator))
2453: break;
2454:
1.133 schwarze 2455: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2456: while (isspace((unsigned char)v[*pos]))
2457: (*pos)++;
2458:
1.133 schwarze 2459: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.77 schwarze 2460: return(0);
2461:
1.133 schwarze 2462: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2463: while (isspace((unsigned char)v[*pos]))
2464: (*pos)++;
1.79 schwarze 2465:
2466: if (NULL == res)
2467: continue;
1.77 schwarze 2468:
2469: switch (operator) {
1.80 schwarze 2470: case '+':
1.77 schwarze 2471: *res += operand2;
2472: break;
1.80 schwarze 2473: case '-':
1.77 schwarze 2474: *res -= operand2;
2475: break;
1.80 schwarze 2476: case '*':
1.77 schwarze 2477: *res *= operand2;
2478: break;
1.80 schwarze 2479: case '/':
1.116 schwarze 2480: if (operand2 == 0) {
1.106 schwarze 2481: mandoc_msg(MANDOCERR_DIVZERO,
2482: r->parse, ln, *pos, v);
2483: *res = 0;
2484: break;
2485: }
1.77 schwarze 2486: *res /= operand2;
2487: break;
1.80 schwarze 2488: case '%':
1.116 schwarze 2489: if (operand2 == 0) {
2490: mandoc_msg(MANDOCERR_DIVZERO,
2491: r->parse, ln, *pos, v);
2492: *res = 0;
2493: break;
2494: }
1.77 schwarze 2495: *res %= operand2;
2496: break;
1.80 schwarze 2497: case '<':
1.77 schwarze 2498: *res = *res < operand2;
2499: break;
1.80 schwarze 2500: case '>':
1.77 schwarze 2501: *res = *res > operand2;
2502: break;
1.80 schwarze 2503: case 'l':
1.77 schwarze 2504: *res = *res <= operand2;
2505: break;
1.80 schwarze 2506: case 'g':
1.77 schwarze 2507: *res = *res >= operand2;
2508: break;
1.80 schwarze 2509: case '=':
1.77 schwarze 2510: *res = *res == operand2;
2511: break;
1.80 schwarze 2512: case '!':
1.77 schwarze 2513: *res = *res != operand2;
2514: break;
1.80 schwarze 2515: case '&':
1.77 schwarze 2516: *res = *res && operand2;
2517: break;
1.80 schwarze 2518: case ':':
1.77 schwarze 2519: *res = *res || operand2;
2520: break;
1.80 schwarze 2521: case 'i':
1.77 schwarze 2522: if (operand2 < *res)
2523: *res = operand2;
2524: break;
1.80 schwarze 2525: case 'a':
1.77 schwarze 2526: if (operand2 > *res)
2527: *res = operand2;
2528: break;
2529: default:
2530: abort();
2531: }
2532: }
2533: return(1);
2534: }
2535:
1.138 schwarze 2536: /* --- register management ------------------------------------------------ */
2537:
1.52 schwarze 2538: void
1.60 schwarze 2539: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.41 schwarze 2540: {
1.52 schwarze 2541: struct roffreg *reg;
2542:
2543: /* Search for an existing register with the same name. */
2544: reg = r->regtab;
2545:
2546: while (reg && strcmp(name, reg->key.p))
2547: reg = reg->next;
1.41 schwarze 2548:
1.52 schwarze 2549: if (NULL == reg) {
2550: /* Create a new register. */
2551: reg = mandoc_malloc(sizeof(struct roffreg));
2552: reg->key.p = mandoc_strdup(name);
2553: reg->key.sz = strlen(name);
1.60 schwarze 2554: reg->val = 0;
1.52 schwarze 2555: reg->next = r->regtab;
2556: r->regtab = reg;
2557: }
2558:
1.60 schwarze 2559: if ('+' == sign)
2560: reg->val += val;
2561: else if ('-' == sign)
2562: reg->val -= val;
2563: else
2564: reg->val = val;
1.41 schwarze 2565: }
2566:
1.65 schwarze 2567: /*
2568: * Handle some predefined read-only number registers.
2569: * For now, return -1 if the requested register is not predefined;
2570: * in case a predefined read-only register having the value -1
2571: * were to turn up, another special value would have to be chosen.
2572: */
2573: static int
2574: roff_getregro(const char *name)
2575: {
2576:
2577: switch (*name) {
1.80 schwarze 2578: case 'A': /* ASCII approximation mode is always off. */
1.65 schwarze 2579: return(0);
1.80 schwarze 2580: case 'g': /* Groff compatibility mode is always on. */
1.65 schwarze 2581: return(1);
1.80 schwarze 2582: case 'H': /* Fixed horizontal resolution. */
1.65 schwarze 2583: return (24);
1.80 schwarze 2584: case 'j': /* Always adjust left margin only. */
1.65 schwarze 2585: return(0);
1.80 schwarze 2586: case 'T': /* Some output device is always defined. */
1.65 schwarze 2587: return(1);
1.80 schwarze 2588: case 'V': /* Fixed vertical resolution. */
1.65 schwarze 2589: return (40);
2590: default:
2591: return (-1);
2592: }
2593: }
2594:
1.53 schwarze 2595: int
1.52 schwarze 2596: roff_getreg(const struct roff *r, const char *name)
1.41 schwarze 2597: {
1.52 schwarze 2598: struct roffreg *reg;
1.65 schwarze 2599: int val;
2600:
2601: if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) {
2602: val = roff_getregro(name + 1);
2603: if (-1 != val)
2604: return (val);
2605: }
1.52 schwarze 2606:
2607: for (reg = r->regtab; reg; reg = reg->next)
2608: if (0 == strcmp(name, reg->key.p))
1.53 schwarze 2609: return(reg->val);
2610:
2611: return(0);
2612: }
2613:
2614: static int
2615: roff_getregn(const struct roff *r, const char *name, size_t len)
2616: {
2617: struct roffreg *reg;
1.65 schwarze 2618: int val;
2619:
2620: if ('.' == name[0] && 2 == len) {
2621: val = roff_getregro(name + 1);
2622: if (-1 != val)
2623: return (val);
2624: }
1.53 schwarze 2625:
2626: for (reg = r->regtab; reg; reg = reg->next)
2627: if (len == reg->key.sz &&
2628: 0 == strncmp(name, reg->key.p, len))
2629: return(reg->val);
1.143 ! schwarze 2630:
! 2631: return(0);
! 2632: }
! 2633:
! 2634: static int
! 2635: roff_hasregn(const struct roff *r, const char *name, size_t len)
! 2636: {
! 2637: struct roffreg *reg;
! 2638: int val;
! 2639:
! 2640: if ('.' == name[0] && 2 == len) {
! 2641: val = roff_getregro(name + 1);
! 2642: if (-1 != val)
! 2643: return(1);
! 2644: }
! 2645:
! 2646: for (reg = r->regtab; reg; reg = reg->next)
! 2647: if (len == reg->key.sz &&
! 2648: 0 == strncmp(name, reg->key.p, len))
! 2649: return(1);
1.41 schwarze 2650:
1.52 schwarze 2651: return(0);
1.41 schwarze 2652: }
2653:
1.52 schwarze 2654: static void
2655: roff_freereg(struct roffreg *reg)
1.41 schwarze 2656: {
1.52 schwarze 2657: struct roffreg *old_reg;
1.41 schwarze 2658:
1.52 schwarze 2659: while (NULL != reg) {
2660: free(reg->key.p);
2661: old_reg = reg;
2662: reg = reg->next;
2663: free(old_reg);
2664: }
1.41 schwarze 2665: }
1.7 schwarze 2666:
2667: static enum rofferr
1.6 schwarze 2668: roff_nr(ROFF_ARGS)
1.1 schwarze 2669: {
1.85 schwarze 2670: char *key, *val;
2671: size_t keysz;
1.37 schwarze 2672: int iv;
1.60 schwarze 2673: char sign;
1.6 schwarze 2674:
1.110 schwarze 2675: key = val = buf->buf + pos;
2676: if (*key == '\0')
1.85 schwarze 2677: return(ROFF_IGN);
2678:
2679: keysz = roff_getname(r, &val, ln, pos);
1.110 schwarze 2680: if (key[keysz] == '\\')
1.85 schwarze 2681: return(ROFF_IGN);
2682: key[keysz] = '\0';
1.6 schwarze 2683:
1.60 schwarze 2684: sign = *val;
1.110 schwarze 2685: if (sign == '+' || sign == '-')
1.60 schwarze 2686: val++;
2687:
1.133 schwarze 2688: if (roff_evalnum(r, ln, val, NULL, &iv, ROFFNUM_SCALE))
1.77 schwarze 2689: roff_setreg(r, key, iv, sign);
1.1 schwarze 2690:
1.76 schwarze 2691: return(ROFF_IGN);
2692: }
2693:
2694: static enum rofferr
2695: roff_rr(ROFF_ARGS)
2696: {
2697: struct roffreg *reg, **prev;
1.85 schwarze 2698: char *name, *cp;
2699: size_t namesz;
1.76 schwarze 2700:
1.110 schwarze 2701: name = cp = buf->buf + pos;
2702: if (*name == '\0')
1.85 schwarze 2703: return(ROFF_IGN);
2704: namesz = roff_getname(r, &cp, ln, pos);
2705: name[namesz] = '\0';
1.76 schwarze 2706:
2707: prev = &r->regtab;
2708: while (1) {
2709: reg = *prev;
1.110 schwarze 2710: if (reg == NULL || !strcmp(name, reg->key.p))
1.76 schwarze 2711: break;
2712: prev = ®->next;
2713: }
1.110 schwarze 2714: if (reg != NULL) {
1.76 schwarze 2715: *prev = reg->next;
2716: free(reg->key.p);
2717: free(reg);
2718: }
1.29 schwarze 2719: return(ROFF_IGN);
2720: }
2721:
1.138 schwarze 2722: /* --- handler functions for roff requests -------------------------------- */
2723:
1.29 schwarze 2724: static enum rofferr
2725: roff_rm(ROFF_ARGS)
2726: {
2727: const char *name;
2728: char *cp;
1.85 schwarze 2729: size_t namesz;
1.29 schwarze 2730:
1.110 schwarze 2731: cp = buf->buf + pos;
2732: while (*cp != '\0') {
1.85 schwarze 2733: name = cp;
1.110 schwarze 2734: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.85 schwarze 2735: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.110 schwarze 2736: if (name[namesz] == '\\')
1.85 schwarze 2737: break;
1.29 schwarze 2738: }
1.51 schwarze 2739: return(ROFF_IGN);
2740: }
2741:
2742: static enum rofferr
2743: roff_it(ROFF_ARGS)
2744: {
2745: int iv;
2746:
2747: /* Parse the number of lines. */
1.133 schwarze 2748:
2749: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.95 schwarze 2750: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.110 schwarze 2751: ln, ppos, buf->buf + 1);
1.51 schwarze 2752: return(ROFF_IGN);
2753: }
2754:
1.134 schwarze 2755: while (isspace((unsigned char)buf->buf[pos]))
2756: pos++;
2757:
2758: /*
2759: * Arm the input line trap.
2760: * Special-casing "an-trap" is an ugly workaround to cope
2761: * with DocBook stupidly fiddling with man(7) internals.
2762: */
1.133 schwarze 2763:
1.51 schwarze 2764: roffit_lines = iv;
1.134 schwarze 2765: roffit_macro = mandoc_strdup(iv != 1 ||
2766: strcmp(buf->buf + pos, "an-trap") ?
2767: buf->buf + pos : "br");
1.2 schwarze 2768: return(ROFF_IGN);
1.47 schwarze 2769: }
2770:
2771: static enum rofferr
2772: roff_Dd(ROFF_ARGS)
2773: {
2774: const char *const *cp;
2775:
1.99 schwarze 2776: if ((r->options & (MPARSE_MDOC | MPARSE_QUICK)) == 0)
1.47 schwarze 2777: for (cp = __mdoc_reserved; *cp; cp++)
2778: roff_setstr(r, *cp, NULL, 0);
2779:
1.99 schwarze 2780: if (r->format == 0)
2781: r->format = MPARSE_MDOC;
2782:
1.47 schwarze 2783: return(ROFF_CONT);
2784: }
2785:
2786: static enum rofferr
2787: roff_TH(ROFF_ARGS)
2788: {
2789: const char *const *cp;
2790:
1.99 schwarze 2791: if ((r->options & MPARSE_QUICK) == 0)
1.47 schwarze 2792: for (cp = __man_reserved; *cp; cp++)
2793: roff_setstr(r, *cp, NULL, 0);
2794:
1.99 schwarze 2795: if (r->format == 0)
2796: r->format = MPARSE_MAN;
2797:
1.47 schwarze 2798: return(ROFF_CONT);
1.14 schwarze 2799: }
2800:
2801: static enum rofferr
1.27 schwarze 2802: roff_TE(ROFF_ARGS)
2803: {
2804:
2805: if (NULL == r->tbl)
1.94 schwarze 2806: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2807: ln, ppos, "TE");
1.130 schwarze 2808: else if ( ! tbl_end(&r->tbl)) {
2809: free(buf->buf);
2810: buf->buf = mandoc_strdup(".sp");
2811: buf->sz = 4;
2812: return(ROFF_REPARSE);
2813: }
1.27 schwarze 2814: return(ROFF_IGN);
2815: }
2816:
2817: static enum rofferr
2818: roff_T_(ROFF_ARGS)
2819: {
2820:
2821: if (NULL == r->tbl)
1.94 schwarze 2822: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2823: ln, ppos, "T&");
1.27 schwarze 2824: else
2825: tbl_restart(ppos, ln, r->tbl);
2826:
2827: return(ROFF_IGN);
2828: }
2829:
1.102 schwarze 2830: /*
2831: * Handle in-line equation delimiters.
2832: */
2833: static enum rofferr
1.110 schwarze 2834: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.41 schwarze 2835: {
1.105 schwarze 2836: char *cp1, *cp2;
2837: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.41 schwarze 2838:
1.102 schwarze 2839: /*
2840: * Outside equations, look for an opening delimiter.
2841: * If we are inside an equation, we already know it is
2842: * in-line, or this function wouldn't have been called;
2843: * so look for a closing delimiter.
2844: */
2845:
1.110 schwarze 2846: cp1 = buf->buf + pos;
1.102 schwarze 2847: cp2 = strchr(cp1, r->eqn == NULL ?
2848: r->last_eqn->odelim : r->last_eqn->cdelim);
2849: if (cp2 == NULL)
2850: return(ROFF_CONT);
2851:
1.105 schwarze 2852: *cp2++ = '\0';
2853: bef_pr = bef_nl = aft_nl = aft_pr = "";
2854:
2855: /* Handle preceding text, protecting whitespace. */
2856:
1.110 schwarze 2857: if (*buf->buf != '\0') {
1.105 schwarze 2858: if (r->eqn == NULL)
2859: bef_pr = "\\&";
2860: bef_nl = "\n";
2861: }
2862:
2863: /*
2864: * Prepare replacing the delimiter with an equation macro
2865: * and drop leading white space from the equation.
2866: */
1.102 schwarze 2867:
1.105 schwarze 2868: if (r->eqn == NULL) {
2869: while (*cp2 == ' ')
2870: cp2++;
2871: mac = ".EQ";
2872: } else
2873: mac = ".EN";
2874:
2875: /* Handle following text, protecting whitespace. */
2876:
2877: if (*cp2 != '\0') {
2878: aft_nl = "\n";
2879: if (r->eqn != NULL)
2880: aft_pr = "\\&";
2881: }
2882:
2883: /* Do the actual replacement. */
2884:
1.110 schwarze 2885: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.105 schwarze 2886: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.110 schwarze 2887: free(buf->buf);
2888: buf->buf = cp1;
1.102 schwarze 2889:
2890: /* Toggle the in-line state of the eqn subsystem. */
2891:
2892: r->eqn_inline = r->eqn == NULL;
2893: return(ROFF_REPARSE);
1.41 schwarze 2894: }
2895:
1.107 schwarze 2896: static enum rofferr
2897: roff_EQ(ROFF_ARGS)
1.32 schwarze 2898: {
1.41 schwarze 2899: struct eqn_node *e;
1.32 schwarze 2900:
1.110 schwarze 2901: assert(r->eqn == NULL);
1.107 schwarze 2902: e = eqn_alloc(ppos, ln, r->parse);
1.32 schwarze 2903:
1.102 schwarze 2904: if (r->last_eqn) {
1.32 schwarze 2905: r->last_eqn->next = e;
1.102 schwarze 2906: e->delim = r->last_eqn->delim;
2907: e->odelim = r->last_eqn->odelim;
2908: e->cdelim = r->last_eqn->cdelim;
2909: } else
1.32 schwarze 2910: r->first_eqn = r->last_eqn = e;
2911:
2912: r->eqn = r->last_eqn = e;
1.41 schwarze 2913:
1.110 schwarze 2914: if (buf->buf[pos] != '\0')
1.107 schwarze 2915: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 2916: ".EQ %s", buf->buf + pos);
1.41 schwarze 2917:
1.32 schwarze 2918: return(ROFF_IGN);
2919: }
2920:
2921: static enum rofferr
2922: roff_EN(ROFF_ARGS)
2923: {
2924:
1.94 schwarze 2925: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
1.32 schwarze 2926: return(ROFF_IGN);
2927: }
2928:
2929: static enum rofferr
1.27 schwarze 2930: roff_TS(ROFF_ARGS)
2931: {
1.49 schwarze 2932: struct tbl_node *tbl;
1.27 schwarze 2933:
2934: if (r->tbl) {
1.94 schwarze 2935: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
2936: ln, ppos, "TS breaks TS");
1.41 schwarze 2937: tbl_end(&r->tbl);
1.27 schwarze 2938: }
2939:
1.49 schwarze 2940: tbl = tbl_alloc(ppos, ln, r->parse);
1.27 schwarze 2941:
2942: if (r->last_tbl)
1.49 schwarze 2943: r->last_tbl->next = tbl;
1.27 schwarze 2944: else
1.49 schwarze 2945: r->first_tbl = r->last_tbl = tbl;
1.27 schwarze 2946:
1.49 schwarze 2947: r->tbl = r->last_tbl = tbl;
1.27 schwarze 2948: return(ROFF_IGN);
1.123 schwarze 2949: }
2950:
2951: static enum rofferr
2952: roff_brp(ROFF_ARGS)
2953: {
2954:
2955: buf->buf[pos - 1] = '\0';
2956: return(ROFF_CONT);
1.27 schwarze 2957: }
2958:
2959: static enum rofferr
1.48 schwarze 2960: roff_cc(ROFF_ARGS)
2961: {
2962: const char *p;
2963:
1.110 schwarze 2964: p = buf->buf + pos;
1.48 schwarze 2965:
1.110 schwarze 2966: if (*p == '\0' || (r->control = *p++) == '.')
1.48 schwarze 2967: r->control = 0;
2968:
1.110 schwarze 2969: if (*p != '\0')
1.132 schwarze 2970: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
2971: ln, p - buf->buf, "cc ... %s", p);
1.48 schwarze 2972:
2973: return(ROFF_IGN);
2974: }
2975:
2976: static enum rofferr
1.42 schwarze 2977: roff_tr(ROFF_ARGS)
2978: {
2979: const char *p, *first, *second;
2980: size_t fsz, ssz;
2981: enum mandoc_esc esc;
2982:
1.110 schwarze 2983: p = buf->buf + pos;
1.42 schwarze 2984:
1.110 schwarze 2985: if (*p == '\0') {
1.132 schwarze 2986: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.42 schwarze 2987: return(ROFF_IGN);
2988: }
2989:
1.110 schwarze 2990: while (*p != '\0') {
1.42 schwarze 2991: fsz = ssz = 1;
2992:
2993: first = p++;
1.110 schwarze 2994: if (*first == '\\') {
1.42 schwarze 2995: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 2996: if (esc == ESCAPE_ERROR) {
1.92 schwarze 2997: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 2998: ln, (int)(p - buf->buf), first);
1.42 schwarze 2999: return(ROFF_IGN);
3000: }
3001: fsz = (size_t)(p - first);
3002: }
3003:
3004: second = p++;
1.110 schwarze 3005: if (*second == '\\') {
1.42 schwarze 3006: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3007: if (esc == ESCAPE_ERROR) {
1.92 schwarze 3008: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 3009: ln, (int)(p - buf->buf), second);
1.42 schwarze 3010: return(ROFF_IGN);
3011: }
3012: ssz = (size_t)(p - second);
1.110 schwarze 3013: } else if (*second == '\0') {
1.132 schwarze 3014: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
3015: ln, first - buf->buf, "tr %s", first);
1.42 schwarze 3016: second = " ";
3017: p--;
3018: }
3019:
3020: if (fsz > 1) {
1.80 schwarze 3021: roff_setstrn(&r->xmbtab, first, fsz,
3022: second, ssz, 0);
1.42 schwarze 3023: continue;
3024: }
3025:
1.110 schwarze 3026: if (r->xtab == NULL)
1.80 schwarze 3027: r->xtab = mandoc_calloc(128,
3028: sizeof(struct roffstr));
1.42 schwarze 3029:
3030: free(r->xtab[(int)*first].p);
3031: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3032: r->xtab[(int)*first].sz = ssz;
3033: }
3034:
3035: return(ROFF_IGN);
3036: }
3037:
3038: static enum rofferr
1.14 schwarze 3039: roff_so(ROFF_ARGS)
3040: {
1.121 schwarze 3041: char *name, *cp;
1.15 schwarze 3042:
1.110 schwarze 3043: name = buf->buf + pos;
1.97 schwarze 3044: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.14 schwarze 3045:
1.22 schwarze 3046: /*
3047: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3048: * opening anything that's not in our cwd or anything beneath
3049: * it. Thus, explicitly disallow traversing up the file-system
3050: * or using absolute paths.
3051: */
3052:
1.110 schwarze 3053: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.83 schwarze 3054: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
3055: ".so %s", name);
1.121 schwarze 3056: buf->sz = mandoc_asprintf(&cp,
3057: ".sp\nSee the file %s.\n.sp", name) + 1;
3058: free(buf->buf);
3059: buf->buf = cp;
3060: *offs = 0;
3061: return(ROFF_REPARSE);
1.14 schwarze 3062: }
3063:
3064: *offs = pos;
3065: return(ROFF_SO);
1.7 schwarze 3066: }
3067:
1.138 schwarze 3068: /* --- user defined strings and macros ------------------------------------ */
3069:
1.16 schwarze 3070: static enum rofferr
3071: roff_userdef(ROFF_ARGS)
1.12 schwarze 3072: {
1.135 schwarze 3073: const char *arg[9], *ap;
1.16 schwarze 3074: char *cp, *n1, *n2;
1.25 schwarze 3075: int i;
1.135 schwarze 3076: size_t asz, rsz;
1.12 schwarze 3077:
1.16 schwarze 3078: /*
3079: * Collect pointers to macro argument strings
1.61 schwarze 3080: * and NUL-terminate them.
1.16 schwarze 3081: */
1.135 schwarze 3082:
1.110 schwarze 3083: cp = buf->buf + pos;
1.25 schwarze 3084: for (i = 0; i < 9; i++)
1.110 schwarze 3085: arg[i] = *cp == '\0' ? "" :
1.35 schwarze 3086: mandoc_getarg(r->parse, &cp, ln, &pos);
1.16 schwarze 3087:
3088: /*
3089: * Expand macro arguments.
1.12 schwarze 3090: */
1.135 schwarze 3091:
3092: buf->sz = strlen(r->current_string) + 1;
3093: n1 = cp = mandoc_malloc(buf->sz);
3094: memcpy(n1, r->current_string, buf->sz);
3095: while (*cp != '\0') {
3096:
3097: /* Scan ahead for the next argument invocation. */
3098:
3099: if (*cp++ != '\\')
3100: continue;
3101: if (*cp++ != '$')
3102: continue;
3103: i = *cp - '1';
3104: if (0 > i || 8 < i)
1.16 schwarze 3105: continue;
1.135 schwarze 3106: cp -= 2;
3107:
3108: /*
3109: * Determine the size of the expanded argument,
3110: * taking escaping of quotes into account.
3111: */
3112:
3113: asz = 0;
3114: for (ap = arg[i]; *ap != '\0'; ap++) {
3115: asz++;
3116: if (*ap == '"')
3117: asz += 3;
3118: }
3119: if (asz != 3) {
3120:
3121: /*
3122: * Determine the size of the rest of the
3123: * unexpanded macro, including the NUL.
3124: */
3125:
3126: rsz = buf->sz - (cp - n1) - 3;
3127:
3128: /*
3129: * When shrinking, move before
3130: * releasing the storage.
3131: */
3132:
3133: if (asz < 3)
3134: memmove(cp + asz, cp + 3, rsz);
3135:
3136: /*
3137: * Resize the storage for the macro
3138: * and readjust the parse pointer.
3139: */
3140:
3141: buf->sz += asz - 3;
3142: n2 = mandoc_realloc(n1, buf->sz);
3143: cp = n2 + (cp - n1);
3144: n1 = n2;
3145:
3146: /*
3147: * When growing, make room
3148: * for the expanded argument.
3149: */
3150:
3151: if (asz > 3)
3152: memmove(cp + asz, cp + 3, rsz);
3153: }
3154:
3155: /* Copy the expanded argument, escaping quotes. */
3156:
3157: n2 = cp;
3158: for (ap = arg[i]; *ap != '\0'; ap++) {
3159: if (*ap == '"') {
3160: memcpy(n2, "\\(dq", 4);
3161: n2 += 4;
3162: } else
3163: *n2++ = *ap;
1.16 schwarze 3164: }
1.12 schwarze 3165: }
3166:
1.16 schwarze 3167: /*
3168: * Replace the macro invocation
3169: * by the expanded macro.
3170: */
1.135 schwarze 3171:
1.110 schwarze 3172: free(buf->buf);
3173: buf->buf = n1;
1.120 schwarze 3174: *offs = 0;
1.16 schwarze 3175:
1.110 schwarze 3176: return(buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
1.16 schwarze 3177: ROFF_REPARSE : ROFF_APPEND);
1.12 schwarze 3178: }
1.28 schwarze 3179:
1.85 schwarze 3180: static size_t
1.28 schwarze 3181: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3182: {
3183: char *name, *cp;
1.85 schwarze 3184: size_t namesz;
1.28 schwarze 3185:
3186: name = *cpp;
3187: if ('\0' == *name)
1.85 schwarze 3188: return(0);
1.28 schwarze 3189:
1.85 schwarze 3190: /* Read until end of name and terminate it with NUL. */
3191: for (cp = name; 1; cp++) {
3192: if ('\0' == *cp || ' ' == *cp) {
3193: namesz = cp - name;
3194: break;
3195: }
1.28 schwarze 3196: if ('\\' != *cp)
3197: continue;
1.88 schwarze 3198: namesz = cp - name;
3199: if ('{' == cp[1] || '}' == cp[1])
3200: break;
1.28 schwarze 3201: cp++;
3202: if ('\\' == *cp)
3203: continue;
1.97 schwarze 3204: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3205: "%.*s", (int)(cp - name + 1), name);
1.85 schwarze 3206: mandoc_escape((const char **)&cp, NULL, NULL);
3207: break;
1.28 schwarze 3208: }
3209:
3210: /* Read past spaces. */
3211: while (' ' == *cp)
3212: cp++;
3213:
3214: *cpp = cp;
1.85 schwarze 3215: return(namesz);
1.28 schwarze 3216: }
3217:
1.16 schwarze 3218: /*
3219: * Store *string into the user-defined string called *name.
3220: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.66 schwarze 3221: * append == 0: replace mode
3222: * append == 1: single-line append mode
3223: * append == 2: multiline append mode, append '\n' after each call
1.16 schwarze 3224: */
1.8 schwarze 3225: static void
1.16 schwarze 3226: roff_setstr(struct roff *r, const char *name, const char *string,
1.66 schwarze 3227: int append)
1.7 schwarze 3228: {
1.42 schwarze 3229:
3230: roff_setstrn(&r->strtab, name, strlen(name), string,
1.80 schwarze 3231: string ? strlen(string) : 0, append);
1.42 schwarze 3232: }
3233:
3234: static void
3235: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.66 schwarze 3236: const char *string, size_t stringsz, int append)
1.42 schwarze 3237: {
3238: struct roffkv *n;
3239: char *c;
3240: int i;
3241: size_t oldch, newch;
1.7 schwarze 3242:
1.16 schwarze 3243: /* Search for an existing string with the same name. */
1.42 schwarze 3244: n = *r;
3245:
1.84 schwarze 3246: while (n && (namesz != n->key.sz ||
3247: strncmp(n->key.p, name, namesz)))
1.7 schwarze 3248: n = n->next;
1.8 schwarze 3249:
3250: if (NULL == n) {
1.16 schwarze 3251: /* Create a new string table entry. */
1.42 schwarze 3252: n = mandoc_malloc(sizeof(struct roffkv));
3253: n->key.p = mandoc_strndup(name, namesz);
3254: n->key.sz = namesz;
3255: n->val.p = NULL;
3256: n->val.sz = 0;
3257: n->next = *r;
3258: *r = n;
1.66 schwarze 3259: } else if (0 == append) {
1.42 schwarze 3260: free(n->val.p);
3261: n->val.p = NULL;
3262: n->val.sz = 0;
1.16 schwarze 3263: }
3264:
3265: if (NULL == string)
3266: return;
3267:
3268: /*
3269: * One additional byte for the '\n' in multiline mode,
3270: * and one for the terminating '\0'.
3271: */
1.66 schwarze 3272: newch = stringsz + (1 < append ? 2u : 1u);
1.42 schwarze 3273:
3274: if (NULL == n->val.p) {
3275: n->val.p = mandoc_malloc(newch);
3276: *n->val.p = '\0';
1.16 schwarze 3277: oldch = 0;
3278: } else {
1.42 schwarze 3279: oldch = n->val.sz;
3280: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.16 schwarze 3281: }
3282:
3283: /* Skip existing content in the destination buffer. */
1.42 schwarze 3284: c = n->val.p + (int)oldch;
1.16 schwarze 3285:
3286: /* Append new content to the destination buffer. */
1.42 schwarze 3287: i = 0;
3288: while (i < (int)stringsz) {
1.16 schwarze 3289: /*
3290: * Rudimentary roff copy mode:
3291: * Handle escaped backslashes.
3292: */
1.42 schwarze 3293: if ('\\' == string[i] && '\\' == string[i + 1])
3294: i++;
3295: *c++ = string[i++];
1.16 schwarze 3296: }
1.8 schwarze 3297:
1.16 schwarze 3298: /* Append terminating bytes. */
1.66 schwarze 3299: if (1 < append)
1.16 schwarze 3300: *c++ = '\n';
1.42 schwarze 3301:
1.16 schwarze 3302: *c = '\0';
1.42 schwarze 3303: n->val.sz = (int)(c - n->val.p);
1.7 schwarze 3304: }
3305:
1.8 schwarze 3306: static const char *
3307: roff_getstrn(const struct roff *r, const char *name, size_t len)
1.7 schwarze 3308: {
1.42 schwarze 3309: const struct roffkv *n;
1.64 schwarze 3310: int i;
1.7 schwarze 3311:
1.42 schwarze 3312: for (n = r->strtab; n; n = n->next)
1.80 schwarze 3313: if (0 == strncmp(name, n->key.p, len) &&
3314: '\0' == n->key.p[(int)len])
1.42 schwarze 3315: return(n->val.p);
1.64 schwarze 3316:
3317: for (i = 0; i < PREDEFS_MAX; i++)
3318: if (0 == strncmp(name, predefs[i].name, len) &&
3319: '\0' == predefs[i].name[(int)len])
3320: return(predefs[i].str);
1.8 schwarze 3321:
1.42 schwarze 3322: return(NULL);
1.7 schwarze 3323: }
3324:
1.8 schwarze 3325: static void
1.42 schwarze 3326: roff_freestr(struct roffkv *r)
1.7 schwarze 3327: {
1.42 schwarze 3328: struct roffkv *n, *nn;
1.7 schwarze 3329:
1.42 schwarze 3330: for (n = r; n; n = nn) {
3331: free(n->key.p);
3332: free(n->val.p);
1.7 schwarze 3333: nn = n->next;
3334: free(n);
3335: }
1.27 schwarze 3336: }
1.138 schwarze 3337:
3338: /* --- accessors and utility functions ------------------------------------ */
1.27 schwarze 3339:
3340: const struct tbl_span *
3341: roff_span(const struct roff *r)
3342: {
1.80 schwarze 3343:
1.27 schwarze 3344: return(r->tbl ? tbl_span(r->tbl) : NULL);
1.32 schwarze 3345: }
3346:
3347: const struct eqn *
3348: roff_eqn(const struct roff *r)
3349: {
1.80 schwarze 3350:
1.32 schwarze 3351: return(r->last_eqn ? &r->last_eqn->eqn : NULL);
1.42 schwarze 3352: }
3353:
3354: /*
3355: * Duplicate an input string, making the appropriate character
3356: * conversations (as stipulated by `tr') along the way.
3357: * Returns a heap-allocated string with all the replacements made.
3358: */
3359: char *
3360: roff_strdup(const struct roff *r, const char *p)
3361: {
3362: const struct roffkv *cp;
3363: char *res;
3364: const char *pp;
3365: size_t ssz, sz;
3366: enum mandoc_esc esc;
3367:
3368: if (NULL == r->xmbtab && NULL == r->xtab)
3369: return(mandoc_strdup(p));
3370: else if ('\0' == *p)
3371: return(mandoc_strdup(""));
3372:
3373: /*
3374: * Step through each character looking for term matches
3375: * (remember that a `tr' can be invoked with an escape, which is
3376: * a glyph but the escape is multi-character).
3377: * We only do this if the character hash has been initialised
3378: * and the string is >0 length.
3379: */
3380:
3381: res = NULL;
3382: ssz = 0;
3383:
3384: while ('\0' != *p) {
3385: if ('\\' != *p && r->xtab && r->xtab[(int)*p].p) {
3386: sz = r->xtab[(int)*p].sz;
3387: res = mandoc_realloc(res, ssz + sz + 1);
3388: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3389: ssz += sz;
3390: p++;
3391: continue;
3392: } else if ('\\' != *p) {
3393: res = mandoc_realloc(res, ssz + 2);
3394: res[ssz++] = *p++;
3395: continue;
3396: }
3397:
3398: /* Search for term matches. */
3399: for (cp = r->xmbtab; cp; cp = cp->next)
3400: if (0 == strncmp(p, cp->key.p, cp->key.sz))
3401: break;
3402:
3403: if (NULL != cp) {
3404: /*
3405: * A match has been found.
3406: * Append the match to the array and move
3407: * forward by its keysize.
3408: */
1.80 schwarze 3409: res = mandoc_realloc(res,
3410: ssz + cp->val.sz + 1);
1.42 schwarze 3411: memcpy(res + ssz, cp->val.p, cp->val.sz);
3412: ssz += cp->val.sz;
3413: p += (int)cp->key.sz;
3414: continue;
3415: }
3416:
3417: /*
3418: * Handle escapes carefully: we need to copy
3419: * over just the escape itself, or else we might
3420: * do replacements within the escape itself.
3421: * Make sure to pass along the bogus string.
3422: */
3423: pp = p++;
3424: esc = mandoc_escape(&p, NULL, NULL);
3425: if (ESCAPE_ERROR == esc) {
3426: sz = strlen(pp);
3427: res = mandoc_realloc(res, ssz + sz + 1);
3428: memcpy(res + ssz, pp, sz);
3429: break;
3430: }
1.80 schwarze 3431: /*
3432: * We bail out on bad escapes.
1.42 schwarze 3433: * No need to warn: we already did so when
3434: * roff_res() was called.
3435: */
3436: sz = (int)(p - pp);
3437: res = mandoc_realloc(res, ssz + sz + 1);
3438: memcpy(res + ssz, pp, sz);
3439: ssz += sz;
3440: }
3441:
3442: res[(int)ssz] = '\0';
3443: return(res);
1.99 schwarze 3444: }
3445:
3446: int
3447: roff_getformat(const struct roff *r)
3448: {
3449:
3450: return(r->format);
1.48 schwarze 3451: }
3452:
3453: /*
1.80 schwarze 3454: * Find out whether a line is a macro line or not.
1.48 schwarze 3455: * If it is, adjust the current position and return one; if it isn't,
3456: * return zero and don't change the current position.
3457: * If the control character has been set with `.cc', then let that grain
3458: * precedence.
3459: * This is slighly contrary to groff, where using the non-breaking
3460: * control character when `cc' has been invoked will cause the
3461: * non-breaking macro contents to be printed verbatim.
3462: */
3463: int
3464: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
3465: {
3466: int pos;
3467:
3468: pos = *ppos;
3469:
3470: if (0 != r->control && cp[pos] == r->control)
3471: pos++;
3472: else if (0 != r->control)
3473: return(0);
3474: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
3475: pos += 2;
3476: else if ('.' == cp[pos] || '\'' == cp[pos])
3477: pos++;
3478: else
3479: return(0);
3480:
3481: while (' ' == cp[pos] || '\t' == cp[pos])
3482: pos++;
3483:
3484: *ppos = pos;
3485: return(1);
1.1 schwarze 3486: }
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