Annotation of src/usr.bin/mandoc/roff.c, Revision 1.124
1.124 ! schwarze 1: /* $OpenBSD: roff.c,v 1.123 2015/01/20 21:12:46 schwarze Exp $ */
1.1 schwarze 2: /*
1.119 schwarze 3: * Copyright (c) 2010, 2011, 2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
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"
1.98 daniel 29: #include "libmandoc.h"
1.27 schwarze 30: #include "libroff.h"
1.1 schwarze 31:
1.37 schwarze 32: /* Maximum number of nested if-else conditionals. */
1.2 schwarze 33: #define RSTACK_MAX 128
34:
1.43 schwarze 35: /* Maximum number of string expansions per line, to break infinite loops. */
36: #define EXPAND_LIMIT 1000
37:
1.1 schwarze 38: enum rofft {
1.123 schwarze 39: ROFF_ab,
1.20 schwarze 40: ROFF_ad,
1.123 schwarze 41: ROFF_af,
42: ROFF_aln,
43: ROFF_als,
1.2 schwarze 44: ROFF_am,
1.123 schwarze 45: ROFF_am1,
1.2 schwarze 46: ROFF_ami,
1.123 schwarze 47: ROFF_ami1,
1.66 schwarze 48: ROFF_as,
1.123 schwarze 49: ROFF_as1,
50: ROFF_asciify,
51: ROFF_backtrace,
52: ROFF_bd,
53: ROFF_bleedat,
54: ROFF_blm,
55: ROFF_box,
56: ROFF_boxa,
57: ROFF_bp,
58: ROFF_BP,
59: /* MAN_br, MDOC_br */
60: ROFF_break,
61: ROFF_breakchar,
62: ROFF_brnl,
63: ROFF_brp,
64: ROFF_brpnl,
65: ROFF_c2,
1.48 schwarze 66: ROFF_cc,
1.67 schwarze 67: ROFF_ce,
1.123 schwarze 68: ROFF_cf,
69: ROFF_cflags,
70: ROFF_ch,
71: ROFF_char,
72: ROFF_chop,
73: ROFF_class,
74: ROFF_close,
75: ROFF_CL,
76: ROFF_color,
77: ROFF_composite,
78: ROFF_continue,
79: ROFF_cp,
80: ROFF_cropat,
81: ROFF_cs,
82: ROFF_cu,
83: ROFF_da,
84: ROFF_dch,
85: ROFF_Dd,
1.1 schwarze 86: ROFF_de,
1.123 schwarze 87: ROFF_de1,
88: ROFF_defcolor,
1.1 schwarze 89: ROFF_dei,
1.123 schwarze 90: ROFF_dei1,
91: ROFF_device,
92: ROFF_devicem,
93: ROFF_di,
94: ROFF_do,
1.2 schwarze 95: ROFF_ds,
1.123 schwarze 96: ROFF_ds1,
97: ROFF_dwh,
98: ROFF_dt,
99: ROFF_ec,
100: ROFF_ecr,
101: ROFF_ecs,
1.2 schwarze 102: ROFF_el,
1.123 schwarze 103: ROFF_em,
104: ROFF_EN,
105: ROFF_eo,
106: ROFF_EP,
107: ROFF_EQ,
108: ROFF_errprint,
109: ROFF_ev,
110: ROFF_evc,
111: ROFF_ex,
112: ROFF_fallback,
1.58 schwarze 113: ROFF_fam,
1.123 schwarze 114: ROFF_fc,
115: ROFF_fchar,
116: ROFF_fcolor,
117: ROFF_fdeferlig,
118: ROFF_feature,
119: /* MAN_fi; ignored in mdoc(7) */
120: ROFF_fkern,
121: ROFF_fl,
122: ROFF_flig,
123: ROFF_fp,
124: ROFF_fps,
125: ROFF_fschar,
126: ROFF_fspacewidth,
127: ROFF_fspecial,
128: /* MAN_ft; ignored in mdoc(7) */
129: ROFF_ftr,
130: ROFF_fzoom,
131: ROFF_gcolor,
132: ROFF_hc,
133: ROFF_hcode,
134: ROFF_hidechar,
135: ROFF_hla,
136: ROFF_hlm,
137: ROFF_hpf,
138: ROFF_hpfa,
139: ROFF_hpfcode,
1.59 schwarze 140: ROFF_hw,
1.20 schwarze 141: ROFF_hy,
1.123 schwarze 142: ROFF_hylang,
143: ROFF_hylen,
144: ROFF_hym,
145: ROFF_hypp,
146: ROFF_hys,
1.2 schwarze 147: ROFF_ie,
148: ROFF_if,
1.1 schwarze 149: ROFF_ig,
1.123 schwarze 150: /* MAN_in; ignored in mdoc(7) */
151: ROFF_index,
1.30 schwarze 152: ROFF_it,
1.123 schwarze 153: ROFF_itc,
154: ROFF_IX,
155: ROFF_kern,
156: ROFF_kernafter,
157: ROFF_kernbefore,
158: ROFF_kernpair,
159: ROFF_lc,
160: ROFF_lc_ctype,
161: ROFF_lds,
162: ROFF_length,
163: ROFF_letadj,
164: ROFF_lf,
165: ROFF_lg,
166: ROFF_lhang,
167: ROFF_linetabs,
168: /* MAN_ll, MDOC_ll */
169: ROFF_lnr,
170: ROFF_lnrf,
171: ROFF_lpfx,
172: ROFF_ls,
173: ROFF_lsm,
174: ROFF_lt,
175: ROFF_mc,
176: ROFF_mediasize,
177: ROFF_minss,
178: ROFF_mk,
179: ROFF_mso,
180: /* MAN_na; ignored in mdoc(7) */
1.20 schwarze 181: ROFF_ne,
1.123 schwarze 182: /* MAN_nf; ignored in mdoc(7) */
1.20 schwarze 183: ROFF_nh,
1.123 schwarze 184: ROFF_nhychar,
185: ROFF_nm,
186: ROFF_nn,
187: ROFF_nop,
1.14 schwarze 188: ROFF_nr,
1.123 schwarze 189: ROFF_nrf,
190: ROFF_nroff,
1.31 schwarze 191: ROFF_ns,
1.123 schwarze 192: ROFF_nx,
193: ROFF_open,
194: ROFF_opena,
195: ROFF_os,
196: ROFF_output,
197: ROFF_padj,
198: ROFF_papersize,
199: ROFF_pc,
200: ROFF_pev,
201: ROFF_pi,
202: ROFF_PI,
1.101 schwarze 203: ROFF_pl,
1.123 schwarze 204: ROFF_pm,
205: ROFF_pn,
206: ROFF_pnr,
207: ROFF_po,
1.31 schwarze 208: ROFF_ps,
1.123 schwarze 209: ROFF_psbb,
210: ROFF_pshape,
211: ROFF_pso,
212: ROFF_ptr,
213: ROFF_pvs,
214: ROFF_rchar,
215: ROFF_rd,
216: ROFF_recursionlimit,
217: ROFF_return,
218: ROFF_rfschar,
219: ROFF_rhang,
220: ROFF_rj,
1.2 schwarze 221: ROFF_rm,
1.123 schwarze 222: ROFF_rn,
223: ROFF_rnn,
1.76 schwarze 224: ROFF_rr,
1.123 schwarze 225: ROFF_rs,
226: ROFF_rt,
227: ROFF_schar,
228: ROFF_sentchar,
229: ROFF_shc,
230: ROFF_shift,
231: ROFF_sizes,
1.14 schwarze 232: ROFF_so,
1.123 schwarze 233: /* MAN_sp, MDOC_sp */
234: ROFF_spacewidth,
235: ROFF_special,
236: ROFF_spreadwarn,
237: ROFF_ss,
238: ROFF_sty,
239: ROFF_substring,
240: ROFF_sv,
241: ROFF_sy,
242: ROFF_T_,
1.31 schwarze 243: ROFF_ta,
1.123 schwarze 244: ROFF_tc,
245: ROFF_TE,
246: ROFF_TH,
247: ROFF_ti,
248: ROFF_tkf,
249: ROFF_tl,
250: ROFF_tm,
251: ROFF_tm1,
252: ROFF_tmc,
1.2 schwarze 253: ROFF_tr,
1.123 schwarze 254: ROFF_track,
255: ROFF_transchar,
256: ROFF_trf,
257: ROFF_trimat,
258: ROFF_trin,
259: ROFF_trnt,
260: ROFF_troff,
1.27 schwarze 261: ROFF_TS,
1.123 schwarze 262: ROFF_uf,
263: ROFF_ul,
264: ROFF_unformat,
265: ROFF_unwatch,
266: ROFF_unwatchn,
267: ROFF_vpt,
268: ROFF_vs,
269: ROFF_warn,
270: ROFF_warnscale,
271: ROFF_watch,
272: ROFF_watchlength,
273: ROFF_watchn,
274: ROFF_wh,
275: ROFF_while,
276: ROFF_write,
277: ROFF_writec,
278: ROFF_writem,
279: ROFF_xflag,
1.2 schwarze 280: ROFF_cblock,
1.16 schwarze 281: ROFF_USERDEF,
1.1 schwarze 282: ROFF_MAX
283: };
284:
1.41 schwarze 285: /*
1.42 schwarze 286: * An incredibly-simple string buffer.
287: */
1.8 schwarze 288: struct roffstr {
1.42 schwarze 289: char *p; /* nil-terminated buffer */
290: size_t sz; /* saved strlen(p) */
291: };
292:
293: /*
294: * A key-value roffstr pair as part of a singly-linked list.
295: */
296: struct roffkv {
297: struct roffstr key;
298: struct roffstr val;
299: struct roffkv *next; /* next in list */
1.8 schwarze 300: };
301:
1.52 schwarze 302: /*
303: * A single number register as part of a singly-linked list.
304: */
305: struct roffreg {
306: struct roffstr key;
1.53 schwarze 307: int val;
1.52 schwarze 308: struct roffreg *next;
309: };
310:
1.1 schwarze 311: struct roff {
1.35 schwarze 312: struct mparse *parse; /* parse point */
1.109 schwarze 313: const struct mchars *mchars; /* character table */
1.1 schwarze 314: struct roffnode *last; /* leaf of stack */
1.96 schwarze 315: int *rstack; /* stack of inverted `ie' values */
1.52 schwarze 316: struct roffreg *regtab; /* number registers */
1.42 schwarze 317: struct roffkv *strtab; /* user-defined strings & macros */
318: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
319: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.16 schwarze 320: const char *current_string; /* value of last called user macro */
1.27 schwarze 321: struct tbl_node *first_tbl; /* first table parsed */
322: struct tbl_node *last_tbl; /* last table parsed */
323: struct tbl_node *tbl; /* current table being parsed */
1.32 schwarze 324: struct eqn_node *last_eqn; /* last equation parsed */
325: struct eqn_node *first_eqn; /* first equation parsed */
326: struct eqn_node *eqn; /* current equation being parsed */
1.102 schwarze 327: int eqn_inline; /* current equation is inline */
1.96 schwarze 328: int options; /* parse options */
329: int rstacksz; /* current size limit of rstack */
330: int rstackpos; /* position in rstack */
1.99 schwarze 331: int format; /* current file in mdoc or man format */
1.96 schwarze 332: char control; /* control character */
1.1 schwarze 333: };
334:
335: struct roffnode {
336: enum rofft tok; /* type of node */
337: struct roffnode *parent; /* up one in stack */
338: int line; /* parse line */
339: int col; /* parse col */
1.16 schwarze 340: char *name; /* node name, e.g. macro name */
1.2 schwarze 341: char *end; /* end-rules: custom token */
342: int endspan; /* end-rules: next-line or infty */
1.71 schwarze 343: int rule; /* current evaluation rule */
1.1 schwarze 344: };
345:
346: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
347: enum rofft tok, /* tok of macro */ \
1.110 schwarze 348: struct buf *buf, /* input buffer */ \
1.1 schwarze 349: int ln, /* parse line */ \
1.2 schwarze 350: int ppos, /* original pos in buffer */ \
351: int pos, /* current pos in buffer */ \
352: int *offs /* reset offset of buffer data */
1.1 schwarze 353:
354: typedef enum rofferr (*roffproc)(ROFF_ARGS);
355:
356: struct roffmac {
357: const char *name; /* macro name */
1.2 schwarze 358: roffproc proc; /* process new macro */
359: roffproc text; /* process as child text of macro */
360: roffproc sub; /* process as child of macro */
361: int flags;
362: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.3 schwarze 363: struct roffmac *next;
1.1 schwarze 364: };
365:
1.37 schwarze 366: struct predef {
367: const char *name; /* predefined input name */
368: const char *str; /* replacement symbol */
369: };
370:
371: #define PREDEF(__name, __str) \
372: { (__name), (__str) },
373:
1.42 schwarze 374: static enum rofft roffhash_find(const char *, size_t);
375: static void roffhash_init(void);
376: static void roffnode_cleanscope(struct roff *);
377: static void roffnode_pop(struct roff *);
378: static void roffnode_push(struct roff *, enum rofft,
379: const char *, int, int);
1.2 schwarze 380: static enum rofferr roff_block(ROFF_ARGS);
381: static enum rofferr roff_block_text(ROFF_ARGS);
382: static enum rofferr roff_block_sub(ROFF_ARGS);
1.123 schwarze 383: static enum rofferr roff_brp(ROFF_ARGS);
1.2 schwarze 384: static enum rofferr roff_cblock(ROFF_ARGS);
1.48 schwarze 385: static enum rofferr roff_cc(ROFF_ARGS);
1.68 schwarze 386: static void roff_ccond(struct roff *, int, int);
1.2 schwarze 387: static enum rofferr roff_cond(ROFF_ARGS);
388: static enum rofferr roff_cond_text(ROFF_ARGS);
389: static enum rofferr roff_cond_sub(ROFF_ARGS);
1.7 schwarze 390: static enum rofferr roff_ds(ROFF_ARGS);
1.110 schwarze 391: static enum rofferr roff_eqndelim(struct roff *, struct buf *, int);
1.106 schwarze 392: static int roff_evalcond(struct roff *r, int,
393: const char *, int *);
394: static int roff_evalnum(struct roff *, int,
395: const char *, int *, int *, int);
396: static int roff_evalpar(struct roff *, int,
397: const char *, int *, int *);
1.71 schwarze 398: static int roff_evalstrcond(const char *, int *);
1.42 schwarze 399: static void roff_free1(struct roff *);
1.52 schwarze 400: static void roff_freereg(struct roffreg *);
1.42 schwarze 401: static void roff_freestr(struct roffkv *);
1.85 schwarze 402: static size_t roff_getname(struct roff *, char **, int, int);
1.56 schwarze 403: static int roff_getnum(const char *, int *, int *);
404: static int roff_getop(const char *, int *, char *);
1.53 schwarze 405: static int roff_getregn(const struct roff *,
406: const char *, size_t);
1.65 schwarze 407: static int roff_getregro(const char *name);
1.80 schwarze 408: static const char *roff_getstrn(const struct roff *,
1.8 schwarze 409: const char *, size_t);
1.123 schwarze 410: static enum rofferr roff_insec(ROFF_ARGS);
1.51 schwarze 411: static enum rofferr roff_it(ROFF_ARGS);
1.21 schwarze 412: static enum rofferr roff_line_ignore(ROFF_ARGS);
1.6 schwarze 413: static enum rofferr roff_nr(ROFF_ARGS);
1.87 schwarze 414: static enum rofft roff_parse(struct roff *, char *, int *,
415: int, int);
1.110 schwarze 416: static enum rofferr roff_parsetext(struct buf *, int, int *);
417: static enum rofferr roff_res(struct roff *, struct buf *, int, int);
1.29 schwarze 418: static enum rofferr roff_rm(ROFF_ARGS);
1.76 schwarze 419: static enum rofferr roff_rr(ROFF_ARGS);
1.8 schwarze 420: static void roff_setstr(struct roff *,
1.16 schwarze 421: const char *, const char *, int);
1.80 schwarze 422: static void roff_setstrn(struct roffkv **, const char *,
1.42 schwarze 423: size_t, const char *, size_t, int);
1.14 schwarze 424: static enum rofferr roff_so(ROFF_ARGS);
1.42 schwarze 425: static enum rofferr roff_tr(ROFF_ARGS);
1.47 schwarze 426: static enum rofferr roff_Dd(ROFF_ARGS);
427: static enum rofferr roff_TH(ROFF_ARGS);
1.27 schwarze 428: static enum rofferr roff_TE(ROFF_ARGS);
429: static enum rofferr roff_TS(ROFF_ARGS);
1.32 schwarze 430: static enum rofferr roff_EQ(ROFF_ARGS);
431: static enum rofferr roff_EN(ROFF_ARGS);
1.27 schwarze 432: static enum rofferr roff_T_(ROFF_ARGS);
1.123 schwarze 433: static enum rofferr roff_unsupp(ROFF_ARGS);
1.16 schwarze 434: static enum rofferr roff_userdef(ROFF_ARGS);
1.1 schwarze 435:
1.42 schwarze 436: /* See roffhash_find() */
1.3 schwarze 437:
438: #define ASCII_HI 126
439: #define ASCII_LO 33
440: #define HASHWIDTH (ASCII_HI - ASCII_LO + 1)
441:
442: static struct roffmac *hash[HASHWIDTH];
443:
444: static struct roffmac roffs[ROFF_MAX] = {
1.123 schwarze 445: { "ab", roff_unsupp, NULL, NULL, 0, NULL },
1.21 schwarze 446: { "ad", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 447: { "af", roff_line_ignore, NULL, NULL, 0, NULL },
448: { "aln", roff_unsupp, NULL, NULL, 0, NULL },
449: { "als", roff_unsupp, NULL, NULL, 0, NULL },
1.3 schwarze 450: { "am", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.123 schwarze 451: { "am1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.3 schwarze 452: { "ami", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.123 schwarze 453: { "ami1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.66 schwarze 454: { "as", roff_ds, NULL, NULL, 0, NULL },
1.123 schwarze 455: { "as1", roff_ds, NULL, NULL, 0, NULL },
456: { "asciify", roff_unsupp, NULL, NULL, 0, NULL },
457: { "backtrace", roff_line_ignore, NULL, NULL, 0, NULL },
458: { "bd", roff_line_ignore, NULL, NULL, 0, NULL },
459: { "bleedat", roff_line_ignore, NULL, NULL, 0, NULL },
460: { "blm", roff_unsupp, NULL, NULL, 0, NULL },
461: { "box", roff_unsupp, NULL, NULL, 0, NULL },
462: { "boxa", roff_unsupp, NULL, NULL, 0, NULL },
463: { "bp", roff_line_ignore, NULL, NULL, 0, NULL },
464: { "BP", roff_unsupp, NULL, NULL, 0, NULL },
465: { "break", roff_unsupp, NULL, NULL, 0, NULL },
466: { "breakchar", roff_line_ignore, NULL, NULL, 0, NULL },
467: { "brnl", roff_line_ignore, NULL, NULL, 0, NULL },
468: { "brp", roff_brp, NULL, NULL, 0, NULL },
469: { "brpnl", roff_line_ignore, NULL, NULL, 0, NULL },
470: { "c2", roff_unsupp, NULL, NULL, 0, NULL },
1.48 schwarze 471: { "cc", roff_cc, NULL, NULL, 0, NULL },
1.67 schwarze 472: { "ce", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 473: { "cf", roff_insec, NULL, NULL, 0, NULL },
474: { "cflags", roff_line_ignore, NULL, NULL, 0, NULL },
475: { "ch", roff_line_ignore, NULL, NULL, 0, NULL },
476: { "char", roff_unsupp, NULL, NULL, 0, NULL },
477: { "chop", roff_unsupp, NULL, NULL, 0, NULL },
478: { "class", roff_line_ignore, NULL, NULL, 0, NULL },
479: { "close", roff_insec, NULL, NULL, 0, NULL },
480: { "CL", roff_unsupp, NULL, NULL, 0, NULL },
481: { "color", roff_line_ignore, NULL, NULL, 0, NULL },
482: { "composite", roff_unsupp, NULL, NULL, 0, NULL },
483: { "continue", roff_unsupp, NULL, NULL, 0, NULL },
484: { "cp", roff_line_ignore, NULL, NULL, 0, NULL },
485: { "cropat", roff_line_ignore, NULL, NULL, 0, NULL },
486: { "cs", roff_line_ignore, NULL, NULL, 0, NULL },
487: { "cu", roff_line_ignore, NULL, NULL, 0, NULL },
488: { "da", roff_unsupp, NULL, NULL, 0, NULL },
489: { "dch", roff_unsupp, NULL, NULL, 0, NULL },
490: { "Dd", roff_Dd, NULL, NULL, 0, NULL },
1.3 schwarze 491: { "de", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.123 schwarze 492: { "de1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
493: { "defcolor", roff_line_ignore, NULL, NULL, 0, NULL },
1.3 schwarze 494: { "dei", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.123 schwarze 495: { "dei1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
496: { "device", roff_unsupp, NULL, NULL, 0, NULL },
497: { "devicem", roff_unsupp, NULL, NULL, 0, NULL },
498: { "di", roff_unsupp, NULL, NULL, 0, NULL },
499: { "do", roff_unsupp, NULL, NULL, 0, NULL },
1.7 schwarze 500: { "ds", roff_ds, NULL, NULL, 0, NULL },
1.123 schwarze 501: { "ds1", roff_ds, NULL, NULL, 0, NULL },
502: { "dwh", roff_unsupp, NULL, NULL, 0, NULL },
503: { "dt", roff_unsupp, NULL, NULL, 0, NULL },
504: { "ec", roff_unsupp, NULL, NULL, 0, NULL },
505: { "ecr", roff_unsupp, NULL, NULL, 0, NULL },
506: { "ecs", roff_unsupp, NULL, NULL, 0, NULL },
1.3 schwarze 507: { "el", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
1.123 schwarze 508: { "em", roff_unsupp, NULL, NULL, 0, NULL },
509: { "EN", roff_EN, NULL, NULL, 0, NULL },
510: { "eo", roff_unsupp, NULL, NULL, 0, NULL },
511: { "EP", roff_unsupp, NULL, NULL, 0, NULL },
512: { "EQ", roff_EQ, NULL, NULL, 0, NULL },
513: { "errprint", roff_line_ignore, NULL, NULL, 0, NULL },
514: { "ev", roff_unsupp, NULL, NULL, 0, NULL },
515: { "evc", roff_unsupp, NULL, NULL, 0, NULL },
516: { "ex", roff_unsupp, NULL, NULL, 0, NULL },
517: { "fallback", roff_line_ignore, NULL, NULL, 0, NULL },
1.58 schwarze 518: { "fam", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 519: { "fc", roff_unsupp, NULL, NULL, 0, NULL },
520: { "fchar", roff_unsupp, NULL, NULL, 0, NULL },
521: { "fcolor", roff_line_ignore, NULL, NULL, 0, NULL },
522: { "fdeferlig", roff_line_ignore, NULL, NULL, 0, NULL },
523: { "feature", roff_line_ignore, NULL, NULL, 0, NULL },
524: { "fkern", roff_line_ignore, NULL, NULL, 0, NULL },
525: { "fl", roff_line_ignore, NULL, NULL, 0, NULL },
526: { "flig", roff_line_ignore, NULL, NULL, 0, NULL },
527: { "fp", roff_line_ignore, NULL, NULL, 0, NULL },
528: { "fps", roff_line_ignore, NULL, NULL, 0, NULL },
529: { "fschar", roff_unsupp, NULL, NULL, 0, NULL },
530: { "fspacewidth", roff_line_ignore, NULL, NULL, 0, NULL },
531: { "fspecial", roff_line_ignore, NULL, NULL, 0, NULL },
532: { "ftr", roff_line_ignore, NULL, NULL, 0, NULL },
533: { "fzoom", roff_line_ignore, NULL, NULL, 0, NULL },
534: { "gcolor", roff_line_ignore, NULL, NULL, 0, NULL },
535: { "hc", roff_line_ignore, NULL, NULL, 0, NULL },
536: { "hcode", roff_line_ignore, NULL, NULL, 0, NULL },
537: { "hidechar", roff_line_ignore, NULL, NULL, 0, NULL },
538: { "hla", roff_line_ignore, NULL, NULL, 0, NULL },
539: { "hlm", roff_line_ignore, NULL, NULL, 0, NULL },
540: { "hpf", roff_line_ignore, NULL, NULL, 0, NULL },
541: { "hpfa", roff_line_ignore, NULL, NULL, 0, NULL },
542: { "hpfcode", roff_line_ignore, NULL, NULL, 0, NULL },
1.59 schwarze 543: { "hw", roff_line_ignore, NULL, NULL, 0, NULL },
1.21 schwarze 544: { "hy", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 545: { "hylang", roff_line_ignore, NULL, NULL, 0, NULL },
546: { "hylen", roff_line_ignore, NULL, NULL, 0, NULL },
547: { "hym", roff_line_ignore, NULL, NULL, 0, NULL },
548: { "hypp", roff_line_ignore, NULL, NULL, 0, NULL },
549: { "hys", roff_line_ignore, NULL, NULL, 0, NULL },
1.3 schwarze 550: { "ie", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
551: { "if", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
552: { "ig", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.123 schwarze 553: { "index", roff_unsupp, NULL, NULL, 0, NULL },
1.51 schwarze 554: { "it", roff_it, NULL, NULL, 0, NULL },
1.123 schwarze 555: { "itc", roff_unsupp, NULL, NULL, 0, NULL },
556: { "IX", roff_line_ignore, NULL, NULL, 0, NULL },
557: { "kern", roff_line_ignore, NULL, NULL, 0, NULL },
558: { "kernafter", roff_line_ignore, NULL, NULL, 0, NULL },
559: { "kernbefore", roff_line_ignore, NULL, NULL, 0, NULL },
560: { "kernpair", roff_line_ignore, NULL, NULL, 0, NULL },
561: { "lc", roff_unsupp, NULL, NULL, 0, NULL },
562: { "lc_ctype", roff_unsupp, NULL, NULL, 0, NULL },
563: { "lds", roff_unsupp, NULL, NULL, 0, NULL },
564: { "length", roff_unsupp, NULL, NULL, 0, NULL },
565: { "letadj", roff_line_ignore, NULL, NULL, 0, NULL },
566: { "lf", roff_insec, NULL, NULL, 0, NULL },
567: { "lg", roff_line_ignore, NULL, NULL, 0, NULL },
568: { "lhang", roff_line_ignore, NULL, NULL, 0, NULL },
569: { "linetabs", roff_unsupp, NULL, NULL, 0, NULL },
570: { "lnr", roff_unsupp, NULL, NULL, 0, NULL },
571: { "lnrf", roff_unsupp, NULL, NULL, 0, NULL },
572: { "lpfx", roff_unsupp, NULL, NULL, 0, NULL },
573: { "ls", roff_line_ignore, NULL, NULL, 0, NULL },
574: { "lsm", roff_unsupp, NULL, NULL, 0, NULL },
575: { "lt", roff_line_ignore, NULL, NULL, 0, NULL },
576: { "mc", roff_line_ignore, NULL, NULL, 0, NULL },
577: { "mediasize", roff_line_ignore, NULL, NULL, 0, NULL },
578: { "minss", roff_line_ignore, NULL, NULL, 0, NULL },
579: { "mk", roff_line_ignore, NULL, NULL, 0, NULL },
580: { "mso", roff_insec, NULL, NULL, 0, NULL },
1.21 schwarze 581: { "ne", roff_line_ignore, NULL, NULL, 0, NULL },
582: { "nh", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 583: { "nhychar", roff_line_ignore, NULL, NULL, 0, NULL },
584: { "nm", roff_unsupp, NULL, NULL, 0, NULL },
585: { "nn", roff_unsupp, NULL, NULL, 0, NULL },
586: { "nop", roff_unsupp, NULL, NULL, 0, NULL },
1.14 schwarze 587: { "nr", roff_nr, NULL, NULL, 0, NULL },
1.123 schwarze 588: { "nrf", roff_unsupp, NULL, NULL, 0, NULL },
589: { "nroff", roff_line_ignore, NULL, NULL, 0, NULL },
1.31 schwarze 590: { "ns", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 591: { "nx", roff_insec, NULL, NULL, 0, NULL },
592: { "open", roff_insec, NULL, NULL, 0, NULL },
593: { "opena", roff_insec, NULL, NULL, 0, NULL },
594: { "os", roff_line_ignore, NULL, NULL, 0, NULL },
595: { "output", roff_unsupp, NULL, NULL, 0, NULL },
596: { "padj", roff_line_ignore, NULL, NULL, 0, NULL },
597: { "papersize", roff_line_ignore, NULL, NULL, 0, NULL },
598: { "pc", roff_line_ignore, NULL, NULL, 0, NULL },
599: { "pev", roff_line_ignore, NULL, NULL, 0, NULL },
600: { "pi", roff_insec, NULL, NULL, 0, NULL },
601: { "PI", roff_unsupp, NULL, NULL, 0, NULL },
1.101 schwarze 602: { "pl", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 603: { "pm", roff_line_ignore, NULL, NULL, 0, NULL },
604: { "pn", roff_line_ignore, NULL, NULL, 0, NULL },
605: { "pnr", roff_line_ignore, NULL, NULL, 0, NULL },
606: { "po", roff_line_ignore, NULL, NULL, 0, NULL },
1.31 schwarze 607: { "ps", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 608: { "psbb", roff_unsupp, NULL, NULL, 0, NULL },
609: { "pshape", roff_line_ignore, NULL, NULL, 0, NULL },
610: { "pso", roff_insec, NULL, NULL, 0, NULL },
611: { "ptr", roff_line_ignore, NULL, NULL, 0, NULL },
612: { "pvs", roff_line_ignore, NULL, NULL, 0, NULL },
613: { "rchar", roff_unsupp, NULL, NULL, 0, NULL },
614: { "rd", roff_line_ignore, NULL, NULL, 0, NULL },
615: { "recursionlimit", roff_line_ignore, NULL, NULL, 0, NULL },
616: { "return", roff_unsupp, NULL, NULL, 0, NULL },
617: { "rfschar", roff_unsupp, NULL, NULL, 0, NULL },
618: { "rhang", roff_line_ignore, NULL, NULL, 0, NULL },
619: { "rj", roff_line_ignore, NULL, NULL, 0, NULL },
1.29 schwarze 620: { "rm", roff_rm, NULL, NULL, 0, NULL },
1.123 schwarze 621: { "rn", roff_unsupp, NULL, NULL, 0, NULL },
622: { "rnn", roff_unsupp, NULL, NULL, 0, NULL },
1.76 schwarze 623: { "rr", roff_rr, NULL, NULL, 0, NULL },
1.123 schwarze 624: { "rs", roff_line_ignore, NULL, NULL, 0, NULL },
625: { "rt", roff_line_ignore, NULL, NULL, 0, NULL },
626: { "schar", roff_unsupp, NULL, NULL, 0, NULL },
627: { "sentchar", roff_line_ignore, NULL, NULL, 0, NULL },
628: { "shc", roff_line_ignore, NULL, NULL, 0, NULL },
629: { "shift", roff_unsupp, NULL, NULL, 0, NULL },
630: { "sizes", roff_line_ignore, NULL, NULL, 0, NULL },
1.14 schwarze 631: { "so", roff_so, NULL, NULL, 0, NULL },
1.123 schwarze 632: { "spacewidth", roff_line_ignore, NULL, NULL, 0, NULL },
633: { "special", roff_line_ignore, NULL, NULL, 0, NULL },
634: { "spreadwarn", roff_line_ignore, NULL, NULL, 0, NULL },
635: { "ss", roff_line_ignore, NULL, NULL, 0, NULL },
636: { "sty", roff_line_ignore, NULL, NULL, 0, NULL },
637: { "substring", roff_unsupp, NULL, NULL, 0, NULL },
638: { "sv", roff_line_ignore, NULL, NULL, 0, NULL },
639: { "sy", roff_insec, NULL, NULL, 0, NULL },
640: { "T&", roff_T_, NULL, NULL, 0, NULL },
1.31 schwarze 641: { "ta", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 642: { "tc", roff_unsupp, NULL, NULL, 0, NULL },
643: { "TE", roff_TE, NULL, NULL, 0, NULL },
644: { "TH", roff_TH, NULL, NULL, 0, NULL },
645: { "ti", roff_line_ignore, NULL, NULL, 0, NULL },
646: { "tkf", roff_line_ignore, NULL, NULL, 0, NULL },
647: { "tl", roff_unsupp, NULL, NULL, 0, NULL },
648: { "tm", roff_line_ignore, NULL, NULL, 0, NULL },
649: { "tm1", roff_line_ignore, NULL, NULL, 0, NULL },
650: { "tmc", roff_line_ignore, NULL, NULL, 0, NULL },
1.42 schwarze 651: { "tr", roff_tr, NULL, NULL, 0, NULL },
1.123 schwarze 652: { "track", roff_line_ignore, NULL, NULL, 0, NULL },
653: { "transchar", roff_line_ignore, NULL, NULL, 0, NULL },
654: { "trf", roff_insec, NULL, NULL, 0, NULL },
655: { "trimat", roff_line_ignore, NULL, NULL, 0, NULL },
656: { "trin", roff_unsupp, NULL, NULL, 0, NULL },
657: { "trnt", roff_unsupp, NULL, NULL, 0, NULL },
658: { "troff", roff_line_ignore, NULL, NULL, 0, NULL },
1.27 schwarze 659: { "TS", roff_TS, NULL, NULL, 0, NULL },
1.123 schwarze 660: { "uf", roff_line_ignore, NULL, NULL, 0, NULL },
661: { "ul", roff_line_ignore, NULL, NULL, 0, NULL },
662: { "unformat", roff_unsupp, NULL, NULL, 0, NULL },
663: { "unwatch", roff_line_ignore, NULL, NULL, 0, NULL },
664: { "unwatchn", roff_line_ignore, NULL, NULL, 0, NULL },
665: { "vpt", roff_line_ignore, NULL, NULL, 0, NULL },
666: { "vs", roff_line_ignore, NULL, NULL, 0, NULL },
667: { "warn", roff_line_ignore, NULL, NULL, 0, NULL },
668: { "warnscale", roff_line_ignore, NULL, NULL, 0, NULL },
669: { "watch", roff_line_ignore, NULL, NULL, 0, NULL },
670: { "watchlength", roff_line_ignore, NULL, NULL, 0, NULL },
671: { "watchn", roff_line_ignore, NULL, NULL, 0, NULL },
672: { "wh", roff_unsupp, NULL, NULL, 0, NULL },
673: { "while", roff_unsupp, NULL, NULL, 0, NULL },
674: { "write", roff_insec, NULL, NULL, 0, NULL },
675: { "writec", roff_insec, NULL, NULL, 0, NULL },
676: { "writem", roff_insec, NULL, NULL, 0, NULL },
677: { "xflag", roff_line_ignore, NULL, NULL, 0, NULL },
1.3 schwarze 678: { ".", roff_cblock, NULL, NULL, 0, NULL },
1.16 schwarze 679: { NULL, roff_userdef, NULL, NULL, 0, NULL },
1.1 schwarze 680: };
681:
1.73 schwarze 682: /* not currently implemented: Ds em Eq LP Me PP pp Or Rd Sf SH */
1.47 schwarze 683: const char *const __mdoc_reserved[] = {
684: "Ac", "Ad", "An", "Ao", "Ap", "Aq", "Ar", "At",
685: "Bc", "Bd", "Bf", "Bk", "Bl", "Bo", "Bq",
686: "Brc", "Bro", "Brq", "Bsx", "Bt", "Bx",
687: "Cd", "Cm", "Db", "Dc", "Dd", "Dl", "Do", "Dq",
1.73 schwarze 688: "Dt", "Dv", "Dx", "D1",
689: "Ec", "Ed", "Ef", "Ek", "El", "Em",
690: "En", "Eo", "Er", "Es", "Ev", "Ex",
1.47 schwarze 691: "Fa", "Fc", "Fd", "Fl", "Fn", "Fo", "Fr", "Ft", "Fx",
1.73 schwarze 692: "Hf", "Ic", "In", "It", "Lb", "Li", "Lk", "Lp",
693: "Ms", "Mt", "Nd", "Nm", "No", "Ns", "Nx",
1.47 schwarze 694: "Oc", "Oo", "Op", "Os", "Ot", "Ox",
1.73 schwarze 695: "Pa", "Pc", "Pf", "Po", "Pp", "Pq",
696: "Qc", "Ql", "Qo", "Qq", "Re", "Rs", "Rv",
697: "Sc", "Sh", "Sm", "So", "Sq",
1.47 schwarze 698: "Ss", "St", "Sx", "Sy",
699: "Ta", "Tn", "Ud", "Ux", "Va", "Vt", "Xc", "Xo", "Xr",
1.73 schwarze 700: "%A", "%B", "%C", "%D", "%I", "%J", "%N", "%O",
1.47 schwarze 701: "%P", "%Q", "%R", "%T", "%U", "%V",
702: NULL
703: };
704:
1.73 schwarze 705: /* not currently implemented: BT DE DS ME MT PT SY TQ YS */
1.47 schwarze 706: const char *const __man_reserved[] = {
1.73 schwarze 707: "AT", "B", "BI", "BR", "DT",
708: "EE", "EN", "EQ", "EX", "HP", "I", "IB", "IP", "IR",
709: "LP", "OP", "P", "PD", "PP",
710: "R", "RB", "RE", "RI", "RS", "SB", "SH", "SM", "SS",
711: "TE", "TH", "TP", "TS", "T&", "UC", "UE", "UR",
1.47 schwarze 712: NULL
713: };
714:
1.37 schwarze 715: /* Array of injected predefined strings. */
716: #define PREDEFS_MAX 38
717: static const struct predef predefs[PREDEFS_MAX] = {
718: #include "predefs.in"
719: };
720:
1.42 schwarze 721: /* See roffhash_find() */
1.3 schwarze 722: #define ROFF_HASH(p) (p[0] - ASCII_LO)
723:
1.51 schwarze 724: static int roffit_lines; /* number of lines to delay */
725: static char *roffit_macro; /* nil-terminated macro line */
726:
1.80 schwarze 727:
1.3 schwarze 728: static void
1.42 schwarze 729: roffhash_init(void)
1.3 schwarze 730: {
731: struct roffmac *n;
732: int buc, i;
733:
1.16 schwarze 734: for (i = 0; i < (int)ROFF_USERDEF; i++) {
1.3 schwarze 735: assert(roffs[i].name[0] >= ASCII_LO);
736: assert(roffs[i].name[0] <= ASCII_HI);
737:
738: buc = ROFF_HASH(roffs[i].name);
739:
740: if (NULL != (n = hash[buc])) {
741: for ( ; n->next; n = n->next)
742: /* Do nothing. */ ;
743: n->next = &roffs[i];
744: } else
745: hash[buc] = &roffs[i];
746: }
747: }
748:
1.1 schwarze 749: /*
750: * Look up a roff token by its name. Returns ROFF_MAX if no macro by
751: * the nil-terminated string name could be found.
752: */
753: static enum rofft
1.42 schwarze 754: roffhash_find(const char *p, size_t s)
1.1 schwarze 755: {
1.3 schwarze 756: int buc;
757: struct roffmac *n;
1.1 schwarze 758:
1.3 schwarze 759: /*
760: * libroff has an extremely simple hashtable, for the time
761: * being, which simply keys on the first character, which must
762: * be printable, then walks a chain. It works well enough until
763: * optimised.
764: */
765:
766: if (p[0] < ASCII_LO || p[0] > ASCII_HI)
767: return(ROFF_MAX);
768:
769: buc = ROFF_HASH(p);
770:
771: if (NULL == (n = hash[buc]))
772: return(ROFF_MAX);
773: for ( ; n; n = n->next)
1.16 schwarze 774: if (0 == strncmp(n->name, p, s) && '\0' == n->name[(int)s])
1.3 schwarze 775: return((enum rofft)(n - roffs));
1.1 schwarze 776:
777: return(ROFF_MAX);
778: }
779:
780: /*
781: * Pop the current node off of the stack of roff instructions currently
782: * pending.
783: */
784: static void
785: roffnode_pop(struct roff *r)
786: {
787: struct roffnode *p;
788:
1.2 schwarze 789: assert(r->last);
1.80 schwarze 790: p = r->last;
1.2 schwarze 791:
792: r->last = r->last->parent;
1.16 schwarze 793: free(p->name);
794: free(p->end);
1.1 schwarze 795: free(p);
796: }
797:
798: /*
799: * Push a roff node onto the instruction stack. This must later be
800: * removed with roffnode_pop().
801: */
1.11 schwarze 802: static void
1.16 schwarze 803: roffnode_push(struct roff *r, enum rofft tok, const char *name,
804: int line, int col)
1.1 schwarze 805: {
806: struct roffnode *p;
807:
1.11 schwarze 808: p = mandoc_calloc(1, sizeof(struct roffnode));
1.1 schwarze 809: p->tok = tok;
1.16 schwarze 810: if (name)
811: p->name = mandoc_strdup(name);
1.1 schwarze 812: p->parent = r->last;
813: p->line = line;
814: p->col = col;
1.71 schwarze 815: p->rule = p->parent ? p->parent->rule : 0;
1.1 schwarze 816:
817: r->last = p;
818: }
819:
820: static void
821: roff_free1(struct roff *r)
822: {
1.49 schwarze 823: struct tbl_node *tbl;
1.32 schwarze 824: struct eqn_node *e;
1.42 schwarze 825: int i;
1.27 schwarze 826:
1.49 schwarze 827: while (NULL != (tbl = r->first_tbl)) {
828: r->first_tbl = tbl->next;
829: tbl_free(tbl);
1.27 schwarze 830: }
831: r->first_tbl = r->last_tbl = r->tbl = NULL;
1.1 schwarze 832:
1.32 schwarze 833: while (NULL != (e = r->first_eqn)) {
834: r->first_eqn = e->next;
835: eqn_free(e);
836: }
837: r->first_eqn = r->last_eqn = r->eqn = NULL;
838:
1.1 schwarze 839: while (r->last)
840: roffnode_pop(r);
1.27 schwarze 841:
1.96 schwarze 842: free (r->rstack);
843: r->rstack = NULL;
844: r->rstacksz = 0;
845: r->rstackpos = -1;
846:
847: roff_freereg(r->regtab);
848: r->regtab = NULL;
849:
1.42 schwarze 850: roff_freestr(r->strtab);
851: roff_freestr(r->xmbtab);
852: r->strtab = r->xmbtab = NULL;
853:
854: if (r->xtab)
855: for (i = 0; i < 128; i++)
856: free(r->xtab[i].p);
857: free(r->xtab);
858: r->xtab = NULL;
1.1 schwarze 859: }
860:
861: void
862: roff_reset(struct roff *r)
863: {
864:
865: roff_free1(r);
1.99 schwarze 866: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.48 schwarze 867: r->control = 0;
1.1 schwarze 868: }
869:
870: void
871: roff_free(struct roff *r)
872: {
873:
874: roff_free1(r);
875: free(r);
876: }
877:
878: struct roff *
1.109 schwarze 879: roff_alloc(struct mparse *parse, const struct mchars *mchars, int options)
1.1 schwarze 880: {
881: struct roff *r;
882:
1.11 schwarze 883: r = mandoc_calloc(1, sizeof(struct roff));
1.35 schwarze 884: r->parse = parse;
1.109 schwarze 885: r->mchars = mchars;
1.72 schwarze 886: r->options = options;
1.99 schwarze 887: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.2 schwarze 888: r->rstackpos = -1;
1.80 schwarze 889:
1.42 schwarze 890: roffhash_init();
1.37 schwarze 891:
1.1 schwarze 892: return(r);
893: }
894:
1.8 schwarze 895: /*
1.79 schwarze 896: * In the current line, expand escape sequences that tend to get
897: * used in numerical expressions and conditional requests.
898: * Also check the syntax of the remaining escape sequences.
1.8 schwarze 899: */
1.45 schwarze 900: static enum rofferr
1.110 schwarze 901: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.8 schwarze 902: {
1.81 schwarze 903: char ubuf[24]; /* buffer to print the number */
1.78 schwarze 904: const char *start; /* start of the string to process */
1.82 schwarze 905: char *stesc; /* start of an escape sequence ('\\') */
1.23 schwarze 906: const char *stnam; /* start of the name, after "[(*" */
907: const char *cp; /* end of the name, e.g. before ']' */
908: const char *res; /* the string to be substituted */
1.110 schwarze 909: char *nbuf; /* new buffer to copy buf->buf to */
1.53 schwarze 910: size_t maxl; /* expected length of the escape name */
911: size_t naml; /* actual length of the escape name */
1.109 schwarze 912: enum mandoc_esc esc; /* type of the escape sequence */
913: int inaml; /* length returned from mandoc_escape() */
1.53 schwarze 914: int expand_count; /* to avoid infinite loops */
1.79 schwarze 915: int npos; /* position in numeric expression */
1.91 schwarze 916: int arg_complete; /* argument not interrupted by eol */
1.79 schwarze 917: char term; /* character terminating the escape */
1.8 schwarze 918:
1.43 schwarze 919: expand_count = 0;
1.110 schwarze 920: start = buf->buf + pos;
1.78 schwarze 921: stesc = strchr(start, '\0') - 1;
922: while (stesc-- > start) {
1.43 schwarze 923:
1.78 schwarze 924: /* Search backwards for the next backslash. */
925:
1.110 schwarze 926: if (*stesc != '\\')
1.78 schwarze 927: continue;
928:
929: /* If it is escaped, skip it. */
930:
931: for (cp = stesc - 1; cp >= start; cp--)
1.110 schwarze 932: if (*cp != '\\')
1.78 schwarze 933: break;
934:
1.110 schwarze 935: if ((stesc - cp) % 2 == 0) {
1.82 schwarze 936: stesc = (char *)cp;
1.78 schwarze 937: continue;
938: }
1.23 schwarze 939:
1.79 schwarze 940: /* Decide whether to expand or to check only. */
1.23 schwarze 941:
1.79 schwarze 942: term = '\0';
1.78 schwarze 943: cp = stesc + 1;
1.53 schwarze 944: switch (*cp) {
1.80 schwarze 945: case '*':
1.53 schwarze 946: res = NULL;
947: break;
1.80 schwarze 948: case 'B':
1.79 schwarze 949: /* FALLTHROUGH */
1.80 schwarze 950: case 'w':
1.79 schwarze 951: term = cp[1];
952: /* FALLTHROUGH */
1.80 schwarze 953: case 'n':
1.53 schwarze 954: res = ubuf;
955: break;
956: default:
1.109 schwarze 957: esc = mandoc_escape(&cp, &stnam, &inaml);
958: if (esc == ESCAPE_ERROR ||
959: (esc == ESCAPE_SPECIAL &&
960: mchars_spec2cp(r->mchars, stnam, inaml) < 0))
1.92 schwarze 961: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.110 schwarze 962: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 963: "%.*s", (int)(cp - stesc), stesc);
1.78 schwarze 964: continue;
1.42 schwarze 965: }
966:
1.78 schwarze 967: if (EXPAND_LIMIT < ++expand_count) {
968: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.110 schwarze 969: ln, (int)(stesc - buf->buf), NULL);
1.78 schwarze 970: return(ROFF_IGN);
971: }
1.23 schwarze 972:
973: /*
974: * The third character decides the length
1.53 schwarze 975: * of the name of the string or register.
1.23 schwarze 976: * Save a pointer to the name.
977: */
978:
1.110 schwarze 979: if (term == '\0') {
1.79 schwarze 980: switch (*++cp) {
1.80 schwarze 981: case '\0':
1.79 schwarze 982: maxl = 0;
983: break;
1.80 schwarze 984: case '(':
1.79 schwarze 985: cp++;
986: maxl = 2;
987: break;
1.80 schwarze 988: case '[':
1.79 schwarze 989: cp++;
990: term = ']';
991: maxl = 0;
992: break;
993: default:
994: maxl = 1;
995: break;
996: }
997: } else {
998: cp += 2;
1.8 schwarze 999: maxl = 0;
1000: }
1.23 schwarze 1001: stnam = cp;
1.8 schwarze 1002:
1.23 schwarze 1003: /* Advance to the end of the name. */
1.8 schwarze 1004:
1.91 schwarze 1005: arg_complete = 1;
1.110 schwarze 1006: for (naml = 0; maxl == 0 || naml < maxl; naml++, cp++) {
1007: if (*cp == '\0') {
1.92 schwarze 1008: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 1009: ln, (int)(stesc - buf->buf), stesc);
1.91 schwarze 1010: arg_complete = 0;
1.79 schwarze 1011: break;
1.42 schwarze 1012: }
1.110 schwarze 1013: if (maxl == 0 && *cp == term) {
1.79 schwarze 1014: cp++;
1.8 schwarze 1015: break;
1.79 schwarze 1016: }
1.8 schwarze 1017: }
1018:
1.23 schwarze 1019: /*
1020: * Retrieve the replacement string; if it is
1021: * undefined, resume searching for escapes.
1022: */
1023:
1.79 schwarze 1024: switch (stesc[1]) {
1.80 schwarze 1025: case '*':
1.91 schwarze 1026: if (arg_complete)
1027: res = roff_getstrn(r, stnam, naml);
1.79 schwarze 1028: break;
1.80 schwarze 1029: case 'B':
1.79 schwarze 1030: npos = 0;
1.91 schwarze 1031: ubuf[0] = arg_complete &&
1.106 schwarze 1032: roff_evalnum(r, ln, stnam, &npos, NULL, 0) &&
1.91 schwarze 1033: stnam + npos + 1 == cp ? '1' : '0';
1.79 schwarze 1034: ubuf[1] = '\0';
1035: break;
1.80 schwarze 1036: case 'n':
1.91 schwarze 1037: if (arg_complete)
1038: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1039: roff_getregn(r, stnam, naml));
1040: else
1041: ubuf[0] = '\0';
1.79 schwarze 1042: break;
1.80 schwarze 1043: case 'w':
1.91 schwarze 1044: /* use even incomplete args */
1.81 schwarze 1045: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.79 schwarze 1046: 24 * (int)naml);
1047: break;
1048: }
1.8 schwarze 1049:
1.110 schwarze 1050: if (res == NULL) {
1.92 schwarze 1051: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1052: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1053: "%.*s", (int)naml, stnam);
1.37 schwarze 1054: res = "";
1.118 schwarze 1055: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1056: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1057: ln, (int)(stesc - buf->buf), NULL);
1058: return(ROFF_IGN);
1.8 schwarze 1059: }
1060:
1.23 schwarze 1061: /* Replace the escape sequence by the string. */
1062:
1.82 schwarze 1063: *stesc = '\0';
1.110 schwarze 1064: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1065: buf->buf, res, cp) + 1;
1.8 schwarze 1066:
1.78 schwarze 1067: /* Prepare for the next replacement. */
1.8 schwarze 1068:
1.78 schwarze 1069: start = nbuf + pos;
1.110 schwarze 1070: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1071: free(buf->buf);
1072: buf->buf = nbuf;
1.42 schwarze 1073: }
1.45 schwarze 1074: return(ROFF_CONT);
1.42 schwarze 1075: }
1076:
1077: /*
1.51 schwarze 1078: * Process text streams:
1079: * Convert all breakable hyphens into ASCII_HYPH.
1080: * Decrement and spring input line trap.
1.42 schwarze 1081: */
1082: static enum rofferr
1.110 schwarze 1083: roff_parsetext(struct buf *buf, int pos, int *offs)
1.42 schwarze 1084: {
1085: size_t sz;
1086: const char *start;
1.51 schwarze 1087: char *p;
1088: int isz;
1.42 schwarze 1089: enum mandoc_esc esc;
1090:
1.110 schwarze 1091: start = p = buf->buf + pos;
1.42 schwarze 1092:
1.110 schwarze 1093: while (*p != '\0') {
1.42 schwarze 1094: sz = strcspn(p, "-\\");
1095: p += sz;
1096:
1.110 schwarze 1097: if (*p == '\0')
1.42 schwarze 1098: break;
1099:
1.110 schwarze 1100: if (*p == '\\') {
1.42 schwarze 1101: /* Skip over escapes. */
1102: p++;
1.62 schwarze 1103: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.110 schwarze 1104: if (esc == ESCAPE_ERROR)
1.42 schwarze 1105: break;
1106: continue;
1107: } else if (p == start) {
1108: p++;
1109: continue;
1110: }
1111:
1.44 schwarze 1112: if (isalpha((unsigned char)p[-1]) &&
1113: isalpha((unsigned char)p[1]))
1.42 schwarze 1114: *p = ASCII_HYPH;
1115: p++;
1.8 schwarze 1116: }
1117:
1.51 schwarze 1118: /* Spring the input line trap. */
1.110 schwarze 1119: if (roffit_lines == 1) {
1120: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1121: free(buf->buf);
1122: buf->buf = p;
1123: buf->sz = isz + 1;
1.51 schwarze 1124: *offs = 0;
1125: free(roffit_macro);
1126: roffit_lines = 0;
1127: return(ROFF_REPARSE);
1.110 schwarze 1128: } else if (roffit_lines > 1)
1.51 schwarze 1129: --roffit_lines;
1.42 schwarze 1130: return(ROFF_CONT);
1.8 schwarze 1131: }
1132:
1.1 schwarze 1133: enum rofferr
1.110 schwarze 1134: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.1 schwarze 1135: {
1136: enum rofft t;
1.27 schwarze 1137: enum rofferr e;
1.110 schwarze 1138: int pos; /* parse point */
1.115 schwarze 1139: int spos; /* saved parse point for messages */
1.110 schwarze 1140: int ppos; /* original offset in buf->buf */
1141: int ctl; /* macro line (boolean) */
1142:
1143: ppos = pos = *offs;
1.1 schwarze 1144:
1.102 schwarze 1145: /* Handle in-line equation delimiters. */
1146:
1.108 schwarze 1147: if (r->tbl == NULL &&
1148: r->last_eqn != NULL && r->last_eqn->delim &&
1.102 schwarze 1149: (r->eqn == NULL || r->eqn_inline)) {
1.110 schwarze 1150: e = roff_eqndelim(r, buf, pos);
1.102 schwarze 1151: if (e == ROFF_REPARSE)
1152: return(e);
1153: assert(e == ROFF_CONT);
1154: }
1155:
1156: /* Expand some escape sequences. */
1.8 schwarze 1157:
1.110 schwarze 1158: e = roff_res(r, buf, ln, pos);
1159: if (e == ROFF_IGN)
1.45 schwarze 1160: return(e);
1.110 schwarze 1161: assert(e == ROFF_CONT);
1.8 schwarze 1162:
1.110 schwarze 1163: ctl = roff_getcontrol(r, buf->buf, &pos);
1.35 schwarze 1164:
1.8 schwarze 1165: /*
1.2 schwarze 1166: * First, if a scope is open and we're not a macro, pass the
1.124 ! schwarze 1167: * text through the macro's filter.
! 1168: * Equations process all content themselves.
! 1169: * Tables process almost all content themselves, but we want
! 1170: * to warn about macros before passing it there.
1.2 schwarze 1171: */
1172:
1.124 ! schwarze 1173: if (r->last != NULL && ! ctl) {
1.2 schwarze 1174: t = r->last->tok;
1175: assert(roffs[t].text);
1.110 schwarze 1176: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1177: assert(e == ROFF_IGN || e == ROFF_CONT);
1178: if (e != ROFF_CONT)
1.32 schwarze 1179: return(e);
1.54 schwarze 1180: }
1.124 ! schwarze 1181: if (r->eqn != NULL)
1.110 schwarze 1182: return(eqn_read(&r->eqn, ln, buf->buf, ppos, offs));
1.124 ! schwarze 1183: if (r->tbl != NULL && ( ! ctl || buf->buf[pos] == '\0'))
! 1184: return(tbl_read(r->tbl, ln, buf->buf, pos));
! 1185: if ( ! ctl)
1.110 schwarze 1186: return(roff_parsetext(buf, pos, offs));
1.100 schwarze 1187:
1188: /* Skip empty request lines. */
1189:
1.110 schwarze 1190: if (buf->buf[pos] == '"') {
1.100 schwarze 1191: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1192: ln, pos, NULL);
1193: return(ROFF_IGN);
1.110 schwarze 1194: } else if (buf->buf[pos] == '\0')
1.100 schwarze 1195: return(ROFF_IGN);
1.2 schwarze 1196:
1197: /*
1198: * If a scope is open, go to the child handler for that macro,
1199: * as it may want to preprocess before doing anything with it.
1.32 schwarze 1200: * Don't do so if an equation is open.
1.2 schwarze 1201: */
1202:
1203: if (r->last) {
1.1 schwarze 1204: t = r->last->tok;
1205: assert(roffs[t].sub);
1.110 schwarze 1206: return((*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs));
1.2 schwarze 1207: }
1208:
1.115 schwarze 1209: /* No scope is open. This is a new request or macro. */
1210:
1211: spos = pos;
1212: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1213:
1214: /* Tables ignore most macros. */
1215:
1216: if (r->tbl != NULL && (t == ROFF_MAX || t == ROFF_TS)) {
1217: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1218: ln, pos, buf->buf + spos);
1219: return(ROFF_IGN);
1220: }
1221:
1.2 schwarze 1222: /*
1.115 schwarze 1223: * This is neither a roff request nor a user-defined macro.
1224: * Let the standard macro set parsers handle it.
1.2 schwarze 1225: */
1226:
1.115 schwarze 1227: if (t == ROFF_MAX)
1.1 schwarze 1228: return(ROFF_CONT);
1.115 schwarze 1229:
1230: /* Execute a roff request or a user defined macro. */
1.1 schwarze 1231:
1.2 schwarze 1232: assert(roffs[t].proc);
1.110 schwarze 1233: return((*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs));
1.2 schwarze 1234: }
1235:
1.27 schwarze 1236: void
1.2 schwarze 1237: roff_endparse(struct roff *r)
1238: {
1.1 schwarze 1239:
1.27 schwarze 1240: if (r->last)
1.94 schwarze 1241: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1242: r->last->line, r->last->col,
1243: roffs[r->last->tok].name);
1.27 schwarze 1244:
1.32 schwarze 1245: if (r->eqn) {
1.94 schwarze 1246: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1247: r->eqn->eqn.ln, r->eqn->eqn.pos, "EQ");
1.41 schwarze 1248: eqn_end(&r->eqn);
1.32 schwarze 1249: }
1250:
1.27 schwarze 1251: if (r->tbl) {
1.94 schwarze 1252: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1253: r->tbl->line, r->tbl->pos, "TS");
1.41 schwarze 1254: tbl_end(&r->tbl);
1.27 schwarze 1255: }
1.1 schwarze 1256: }
1257:
1258: /*
1259: * Parse a roff node's type from the input buffer. This must be in the
1260: * form of ".foo xxx" in the usual way.
1261: */
1262: static enum rofft
1.87 schwarze 1263: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.1 schwarze 1264: {
1.87 schwarze 1265: char *cp;
1.16 schwarze 1266: const char *mac;
1267: size_t maclen;
1.1 schwarze 1268: enum rofft t;
1269:
1.87 schwarze 1270: cp = buf + *pos;
1271:
1272: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.1 schwarze 1273: return(ROFF_MAX);
1274:
1.87 schwarze 1275: mac = cp;
1276: maclen = roff_getname(r, &cp, ln, ppos);
1.1 schwarze 1277:
1.16 schwarze 1278: t = (r->current_string = roff_getstrn(r, mac, maclen))
1.42 schwarze 1279: ? ROFF_USERDEF : roffhash_find(mac, maclen);
1.1 schwarze 1280:
1.87 schwarze 1281: if (ROFF_MAX != t)
1282: *pos = cp - buf;
1.1 schwarze 1283:
1284: return(t);
1285: }
1286:
1287: static enum rofferr
1.2 schwarze 1288: roff_cblock(ROFF_ARGS)
1.1 schwarze 1289: {
1290:
1.2 schwarze 1291: /*
1292: * A block-close `..' should only be invoked as a child of an
1293: * ignore macro, otherwise raise a warning and just ignore it.
1294: */
1295:
1.110 schwarze 1296: if (r->last == NULL) {
1.94 schwarze 1297: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1298: ln, ppos, "..");
1.2 schwarze 1299: return(ROFF_IGN);
1300: }
1.1 schwarze 1301:
1.2 schwarze 1302: switch (r->last->tok) {
1.80 schwarze 1303: case ROFF_am:
1.93 schwarze 1304: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.2 schwarze 1305: /* FALLTHROUGH */
1.80 schwarze 1306: case ROFF_ami:
1.2 schwarze 1307: /* FALLTHROUGH */
1.80 schwarze 1308: case ROFF_de:
1.23 schwarze 1309: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.2 schwarze 1310: /* FALLTHROUGH */
1.80 schwarze 1311: case ROFF_dei:
1.2 schwarze 1312: /* FALLTHROUGH */
1.80 schwarze 1313: case ROFF_ig:
1.2 schwarze 1314: break;
1315: default:
1.94 schwarze 1316: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1317: ln, ppos, "..");
1.1 schwarze 1318: return(ROFF_IGN);
1.2 schwarze 1319: }
1320:
1.110 schwarze 1321: if (buf->buf[pos] != '\0')
1.90 schwarze 1322: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 1323: ".. %s", buf->buf + pos);
1.2 schwarze 1324:
1325: roffnode_pop(r);
1326: roffnode_cleanscope(r);
1327: return(ROFF_IGN);
1328:
1329: }
1.1 schwarze 1330:
1.2 schwarze 1331: static void
1332: roffnode_cleanscope(struct roff *r)
1333: {
1.1 schwarze 1334:
1.2 schwarze 1335: while (r->last) {
1.46 schwarze 1336: if (--r->last->endspan != 0)
1.2 schwarze 1337: break;
1338: roffnode_pop(r);
1339: }
1340: }
1.1 schwarze 1341:
1.68 schwarze 1342: static void
1343: roff_ccond(struct roff *r, int ln, int ppos)
1.2 schwarze 1344: {
1.1 schwarze 1345:
1.2 schwarze 1346: if (NULL == r->last) {
1.94 schwarze 1347: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1348: ln, ppos, "\\}");
1.68 schwarze 1349: return;
1.2 schwarze 1350: }
1.1 schwarze 1351:
1.2 schwarze 1352: switch (r->last->tok) {
1.80 schwarze 1353: case ROFF_el:
1.2 schwarze 1354: /* FALLTHROUGH */
1.80 schwarze 1355: case ROFF_ie:
1.2 schwarze 1356: /* FALLTHROUGH */
1.80 schwarze 1357: case ROFF_if:
1.2 schwarze 1358: break;
1359: default:
1.94 schwarze 1360: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1361: ln, ppos, "\\}");
1.68 schwarze 1362: return;
1.2 schwarze 1363: }
1.1 schwarze 1364:
1.2 schwarze 1365: if (r->last->endspan > -1) {
1.94 schwarze 1366: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1367: ln, ppos, "\\}");
1.68 schwarze 1368: return;
1.2 schwarze 1369: }
1370:
1371: roffnode_pop(r);
1372: roffnode_cleanscope(r);
1.68 schwarze 1373: return;
1.1 schwarze 1374: }
1375:
1376: static enum rofferr
1.2 schwarze 1377: roff_block(ROFF_ARGS)
1.1 schwarze 1378: {
1.93 schwarze 1379: const char *name;
1380: char *iname, *cp;
1.86 schwarze 1381: size_t namesz;
1.16 schwarze 1382:
1.93 schwarze 1383: /* Ignore groff compatibility mode for now. */
1.2 schwarze 1384:
1.110 schwarze 1385: if (tok == ROFF_de1)
1.93 schwarze 1386: tok = ROFF_de;
1.123 schwarze 1387: else if (tok == ROFF_dei1)
1388: tok = ROFF_dei;
1.110 schwarze 1389: else if (tok == ROFF_am1)
1.93 schwarze 1390: tok = ROFF_am;
1.123 schwarze 1391: else if (tok == ROFF_ami1)
1392: tok = ROFF_ami;
1.93 schwarze 1393:
1394: /* Parse the macro name argument. */
1395:
1.110 schwarze 1396: cp = buf->buf + pos;
1397: if (tok == ROFF_ig) {
1.93 schwarze 1398: iname = NULL;
1399: namesz = 0;
1400: } else {
1401: iname = cp;
1402: namesz = roff_getname(r, &cp, ln, ppos);
1403: iname[namesz] = '\0';
1404: }
1.22 schwarze 1405:
1.93 schwarze 1406: /* Resolve the macro name argument if it is indirect. */
1.22 schwarze 1407:
1.110 schwarze 1408: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1409: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.93 schwarze 1410: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1411: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1412: "%.*s", (int)namesz, iname);
1413: namesz = 0;
1414: } else
1415: namesz = strlen(name);
1416: } else
1417: name = iname;
1.22 schwarze 1418:
1.110 schwarze 1419: if (namesz == 0 && tok != ROFF_ig) {
1.93 schwarze 1420: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1421: ln, ppos, roffs[tok].name);
1422: return(ROFF_IGN);
1423: }
1.2 schwarze 1424:
1.16 schwarze 1425: roffnode_push(r, tok, name, ln, ppos);
1426:
1427: /*
1428: * At the beginning of a `de' macro, clear the existing string
1429: * with the same name, if there is one. New content will be
1.66 schwarze 1430: * appended from roff_block_text() in multiline mode.
1.16 schwarze 1431: */
1.22 schwarze 1432:
1.110 schwarze 1433: if (tok == ROFF_de || tok == ROFF_dei)
1.86 schwarze 1434: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.2 schwarze 1435:
1.110 schwarze 1436: if (*cp == '\0')
1.2 schwarze 1437: return(ROFF_IGN);
1.1 schwarze 1438:
1.93 schwarze 1439: /* Get the custom end marker. */
1.22 schwarze 1440:
1.93 schwarze 1441: iname = cp;
1.86 schwarze 1442: namesz = roff_getname(r, &cp, ln, ppos);
1.93 schwarze 1443:
1444: /* Resolve the end marker if it is indirect. */
1445:
1.110 schwarze 1446: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1447: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.93 schwarze 1448: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1449: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1450: "%.*s", (int)namesz, iname);
1451: namesz = 0;
1452: } else
1453: namesz = strlen(name);
1454: } else
1455: name = iname;
1456:
1.86 schwarze 1457: if (namesz)
1458: r->last->end = mandoc_strndup(name, namesz);
1.2 schwarze 1459:
1.110 schwarze 1460: if (*cp != '\0')
1.90 schwarze 1461: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1462: ln, pos, ".%s ... %s", roffs[tok].name, cp);
1.1 schwarze 1463:
1464: return(ROFF_IGN);
1465: }
1466:
1467: static enum rofferr
1.2 schwarze 1468: roff_block_sub(ROFF_ARGS)
1.1 schwarze 1469: {
1.2 schwarze 1470: enum rofft t;
1471: int i, j;
1472:
1473: /*
1474: * First check whether a custom macro exists at this level. If
1475: * it does, then check against it. This is some of groff's
1476: * stranger behaviours. If we encountered a custom end-scope
1477: * tag and that tag also happens to be a "real" macro, then we
1478: * need to try interpreting it again as a real macro. If it's
1479: * not, then return ignore. Else continue.
1480: */
1481:
1482: if (r->last->end) {
1.35 schwarze 1483: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.110 schwarze 1484: if (buf->buf[i] != r->last->end[j])
1.2 schwarze 1485: break;
1.1 schwarze 1486:
1.110 schwarze 1487: if (r->last->end[j] == '\0' &&
1488: (buf->buf[i] == '\0' ||
1489: buf->buf[i] == ' ' ||
1490: buf->buf[i] == '\t')) {
1.2 schwarze 1491: roffnode_pop(r);
1492: roffnode_cleanscope(r);
1.1 schwarze 1493:
1.110 schwarze 1494: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.35 schwarze 1495: i++;
1496:
1497: pos = i;
1.110 schwarze 1498: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1499: ROFF_MAX)
1.2 schwarze 1500: return(ROFF_RERUN);
1501: return(ROFF_IGN);
1502: }
1.1 schwarze 1503: }
1504:
1.2 schwarze 1505: /*
1506: * If we have no custom end-query or lookup failed, then try
1507: * pulling it out of the hashtable.
1508: */
1.1 schwarze 1509:
1.110 schwarze 1510: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.1 schwarze 1511:
1.110 schwarze 1512: if (t != ROFF_cblock) {
1513: if (tok != ROFF_ig)
1514: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.1 schwarze 1515: return(ROFF_IGN);
1.16 schwarze 1516: }
1.1 schwarze 1517:
1.2 schwarze 1518: assert(roffs[t].proc);
1.110 schwarze 1519: return((*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs));
1.2 schwarze 1520: }
1521:
1522: static enum rofferr
1523: roff_block_text(ROFF_ARGS)
1524: {
1525:
1.110 schwarze 1526: if (tok != ROFF_ig)
1527: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.16 schwarze 1528:
1.2 schwarze 1529: return(ROFF_IGN);
1530: }
1531:
1532: static enum rofferr
1533: roff_cond_sub(ROFF_ARGS)
1534: {
1535: enum rofft t;
1.37 schwarze 1536: char *ep;
1.71 schwarze 1537: int rr;
1.2 schwarze 1538:
1539: rr = r->last->rule;
1.37 schwarze 1540: roffnode_cleanscope(r);
1.110 schwarze 1541: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.2 schwarze 1542:
1.37 schwarze 1543: /*
1.50 schwarze 1544: * Fully handle known macros when they are structurally
1545: * required or when the conditional evaluated to true.
1.5 schwarze 1546: */
1547:
1.110 schwarze 1548: if ((t != ROFF_MAX) &&
1549: (rr || roffs[t].flags & ROFFMAC_STRUCT)) {
1.50 schwarze 1550: assert(roffs[t].proc);
1.110 schwarze 1551: return((*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs));
1.50 schwarze 1552: }
1.39 schwarze 1553:
1.69 schwarze 1554: /*
1555: * If `\}' occurs on a macro line without a preceding macro,
1556: * drop the line completely.
1557: */
1558:
1.110 schwarze 1559: ep = buf->buf + pos;
1560: if (ep[0] == '\\' && ep[1] == '}')
1.71 schwarze 1561: rr = 0;
1.69 schwarze 1562:
1.50 schwarze 1563: /* Always check for the closing delimiter `\}'. */
1.39 schwarze 1564:
1.110 schwarze 1565: while ((ep = strchr(ep, '\\')) != NULL) {
1566: if (*(++ep) == '}') {
1.70 schwarze 1567: *ep = '&';
1.110 schwarze 1568: roff_ccond(r, ln, ep - buf->buf - 1);
1.70 schwarze 1569: }
1.119 schwarze 1570: if (*ep != '\0')
1571: ++ep;
1.50 schwarze 1572: }
1.71 schwarze 1573: return(rr ? ROFF_CONT : ROFF_IGN);
1.2 schwarze 1574: }
1575:
1576: static enum rofferr
1577: roff_cond_text(ROFF_ARGS)
1578: {
1.37 schwarze 1579: char *ep;
1.71 schwarze 1580: int rr;
1.2 schwarze 1581:
1582: rr = r->last->rule;
1.37 schwarze 1583: roffnode_cleanscope(r);
1.1 schwarze 1584:
1.110 schwarze 1585: ep = buf->buf + pos;
1586: while ((ep = strchr(ep, '\\')) != NULL) {
1587: if (*(++ep) == '}') {
1.70 schwarze 1588: *ep = '&';
1.110 schwarze 1589: roff_ccond(r, ln, ep - buf->buf - 1);
1.70 schwarze 1590: }
1.119 schwarze 1591: if (*ep != '\0')
1592: ++ep;
1.2 schwarze 1593: }
1.71 schwarze 1594: return(rr ? ROFF_CONT : ROFF_IGN);
1.2 schwarze 1595: }
1596:
1.77 schwarze 1597: /*
1598: * Parse a single signed integer number. Stop at the first non-digit.
1599: * If there is at least one digit, return success and advance the
1600: * parse point, else return failure and let the parse point unchanged.
1601: * Ignore overflows, treat them just like the C language.
1602: */
1.56 schwarze 1603: static int
1604: roff_getnum(const char *v, int *pos, int *res)
1605: {
1.79 schwarze 1606: int myres, n, p;
1607:
1608: if (NULL == res)
1609: res = &myres;
1.56 schwarze 1610:
1611: p = *pos;
1612: n = v[p] == '-';
1613: if (n)
1614: p++;
1615:
1616: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.77 schwarze 1617: *res = 10 * *res + v[p] - '0';
1.56 schwarze 1618: if (p == *pos + n)
1619: return 0;
1620:
1621: if (n)
1622: *res = -*res;
1623:
1624: *pos = p;
1625: return 1;
1626: }
1627:
1.71 schwarze 1628: /*
1629: * Evaluate a string comparison condition.
1630: * The first character is the delimiter.
1631: * Succeed if the string up to its second occurrence
1632: * matches the string up to its third occurence.
1633: * Advance the cursor after the third occurrence
1634: * or lacking that, to the end of the line.
1635: */
1636: static int
1637: roff_evalstrcond(const char *v, int *pos)
1638: {
1639: const char *s1, *s2, *s3;
1640: int match;
1641:
1642: match = 0;
1643: s1 = v + *pos; /* initial delimiter */
1644: s2 = s1 + 1; /* for scanning the first string */
1645: s3 = strchr(s2, *s1); /* for scanning the second string */
1646:
1647: if (NULL == s3) /* found no middle delimiter */
1648: goto out;
1649:
1650: while ('\0' != *++s3) {
1651: if (*s2 != *s3) { /* mismatch */
1652: s3 = strchr(s3, *s1);
1653: break;
1654: }
1655: if (*s3 == *s1) { /* found the final delimiter */
1656: match = 1;
1657: break;
1658: }
1659: s2++;
1660: }
1661:
1662: out:
1663: if (NULL == s3)
1664: s3 = strchr(s2, '\0');
1.114 schwarze 1665: else if (*s3 != '\0')
1.71 schwarze 1666: s3++;
1667: *pos = s3 - v;
1668: return(match);
1669: }
1670:
1.77 schwarze 1671: /*
1672: * Evaluate an optionally negated single character, numerical,
1673: * or string condition.
1674: */
1.71 schwarze 1675: static int
1.106 schwarze 1676: roff_evalcond(struct roff *r, int ln, const char *v, int *pos)
1.5 schwarze 1677: {
1.113 schwarze 1678: int number, savepos, wanttrue;
1.5 schwarze 1679:
1.71 schwarze 1680: if ('!' == v[*pos]) {
1681: wanttrue = 0;
1682: (*pos)++;
1683: } else
1684: wanttrue = 1;
1685:
1.5 schwarze 1686: switch (v[*pos]) {
1.112 schwarze 1687: case '\0':
1688: return(0);
1.80 schwarze 1689: case 'n':
1.71 schwarze 1690: /* FALLTHROUGH */
1.80 schwarze 1691: case 'o':
1.5 schwarze 1692: (*pos)++;
1.71 schwarze 1693: return(wanttrue);
1.80 schwarze 1694: case 'c':
1.71 schwarze 1695: /* FALLTHROUGH */
1.80 schwarze 1696: case 'd':
1.71 schwarze 1697: /* FALLTHROUGH */
1.80 schwarze 1698: case 'e':
1.5 schwarze 1699: /* FALLTHROUGH */
1.80 schwarze 1700: case 'r':
1.5 schwarze 1701: /* FALLTHROUGH */
1.80 schwarze 1702: case 't':
1.111 schwarze 1703: /* FALLTHROUGH */
1704: case 'v':
1.5 schwarze 1705: (*pos)++;
1.71 schwarze 1706: return(!wanttrue);
1.5 schwarze 1707: default:
1708: break;
1709: }
1710:
1.113 schwarze 1711: savepos = *pos;
1.106 schwarze 1712: if (roff_evalnum(r, ln, v, pos, &number, 0))
1.77 schwarze 1713: return((number > 0) == wanttrue);
1.113 schwarze 1714: else if (*pos == savepos)
1715: return(roff_evalstrcond(v, pos) == wanttrue);
1.77 schwarze 1716: else
1.113 schwarze 1717: return (0);
1.5 schwarze 1718: }
1719:
1.2 schwarze 1720: static enum rofferr
1.21 schwarze 1721: roff_line_ignore(ROFF_ARGS)
1.6 schwarze 1722: {
1.30 schwarze 1723:
1.21 schwarze 1724: return(ROFF_IGN);
1725: }
1726:
1727: static enum rofferr
1.123 schwarze 1728: roff_insec(ROFF_ARGS)
1729: {
1730:
1731: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
1732: ln, ppos, roffs[tok].name);
1733: return(ROFF_IGN);
1734: }
1735:
1736: static enum rofferr
1737: roff_unsupp(ROFF_ARGS)
1738: {
1739:
1740: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
1741: ln, ppos, roffs[tok].name);
1742: return(ROFF_IGN);
1743: }
1744:
1745: static enum rofferr
1.2 schwarze 1746: roff_cond(ROFF_ARGS)
1747: {
1.46 schwarze 1748:
1749: roffnode_push(r, tok, NULL, ln, ppos);
1.2 schwarze 1750:
1.80 schwarze 1751: /*
1.35 schwarze 1752: * An `.el' has no conditional body: it will consume the value
1753: * of the current rstack entry set in prior `ie' calls or
1.80 schwarze 1754: * defaults to DENY.
1.35 schwarze 1755: *
1756: * If we're not an `el', however, then evaluate the conditional.
1757: */
1.1 schwarze 1758:
1.110 schwarze 1759: r->last->rule = tok == ROFF_el ?
1.80 schwarze 1760: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.110 schwarze 1761: roff_evalcond(r, ln, buf->buf, &pos);
1.2 schwarze 1762:
1.35 schwarze 1763: /*
1764: * An if-else will put the NEGATION of the current evaluated
1765: * conditional into the stack of rules.
1766: */
1767:
1.110 schwarze 1768: if (tok == ROFF_ie) {
1.96 schwarze 1769: if (r->rstackpos + 1 == r->rstacksz) {
1770: r->rstacksz += 16;
1771: r->rstack = mandoc_reallocarray(r->rstack,
1772: r->rstacksz, sizeof(int));
1.35 schwarze 1773: }
1.71 schwarze 1774: r->rstack[++r->rstackpos] = !r->last->rule;
1.2 schwarze 1775: }
1.5 schwarze 1776:
1777: /* If the parent has false as its rule, then so do we. */
1778:
1.71 schwarze 1779: if (r->last->parent && !r->last->parent->rule)
1780: r->last->rule = 0;
1.5 schwarze 1781:
1782: /*
1.46 schwarze 1783: * Determine scope.
1784: * If there is nothing on the line after the conditional,
1785: * not even whitespace, use next-line scope.
1.5 schwarze 1786: */
1.2 schwarze 1787:
1.110 schwarze 1788: if (buf->buf[pos] == '\0') {
1.46 schwarze 1789: r->last->endspan = 2;
1790: goto out;
1791: }
1792:
1.110 schwarze 1793: while (buf->buf[pos] == ' ')
1.46 schwarze 1794: pos++;
1795:
1796: /* An opening brace requests multiline scope. */
1.2 schwarze 1797:
1.110 schwarze 1798: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.2 schwarze 1799: r->last->endspan = -1;
1800: pos += 2;
1.46 schwarze 1801: goto out;
1.80 schwarze 1802: }
1.2 schwarze 1803:
1804: /*
1.46 schwarze 1805: * Anything else following the conditional causes
1806: * single-line scope. Warn if the scope contains
1807: * nothing but trailing whitespace.
1.2 schwarze 1808: */
1809:
1.110 schwarze 1810: if (buf->buf[pos] == '\0')
1.89 schwarze 1811: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
1812: ln, ppos, roffs[tok].name);
1.2 schwarze 1813:
1.46 schwarze 1814: r->last->endspan = 1;
1.1 schwarze 1815:
1.46 schwarze 1816: out:
1.2 schwarze 1817: *offs = pos;
1818: return(ROFF_RERUN);
1.1 schwarze 1819: }
1820:
1.2 schwarze 1821: static enum rofferr
1.7 schwarze 1822: roff_ds(ROFF_ARGS)
1823: {
1.85 schwarze 1824: char *string;
1825: const char *name;
1826: size_t namesz;
1.10 schwarze 1827:
1.123 schwarze 1828: /* Ignore groff compatibility mode for now. */
1829:
1830: if (tok == ROFF_ds1)
1831: tok = ROFF_ds;
1832: else if (tok == ROFF_as1)
1833: tok = ROFF_as;
1834:
1.10 schwarze 1835: /*
1.85 schwarze 1836: * The first word is the name of the string.
1837: * If it is empty or terminated by an escape sequence,
1838: * abort the `ds' request without defining anything.
1.10 schwarze 1839: */
1.7 schwarze 1840:
1.110 schwarze 1841: name = string = buf->buf + pos;
1842: if (*name == '\0')
1.7 schwarze 1843: return(ROFF_IGN);
1844:
1.85 schwarze 1845: namesz = roff_getname(r, &string, ln, pos);
1.110 schwarze 1846: if (name[namesz] == '\\')
1.85 schwarze 1847: return(ROFF_IGN);
1848:
1849: /* Read past the initial double-quote, if any. */
1.110 schwarze 1850: if (*string == '"')
1.7 schwarze 1851: string++;
1852:
1.10 schwarze 1853: /* The rest is the value. */
1.85 schwarze 1854: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
1855: ROFF_as == tok);
1.7 schwarze 1856: return(ROFF_IGN);
1857: }
1858:
1.77 schwarze 1859: /*
1860: * Parse a single operator, one or two characters long.
1861: * If the operator is recognized, return success and advance the
1862: * parse point, else return failure and let the parse point unchanged.
1863: */
1864: static int
1865: roff_getop(const char *v, int *pos, char *res)
1866: {
1867:
1868: *res = v[*pos];
1869:
1870: switch (*res) {
1.80 schwarze 1871: case '+':
1.77 schwarze 1872: /* FALLTHROUGH */
1.80 schwarze 1873: case '-':
1.77 schwarze 1874: /* FALLTHROUGH */
1.80 schwarze 1875: case '*':
1.77 schwarze 1876: /* FALLTHROUGH */
1.80 schwarze 1877: case '/':
1.77 schwarze 1878: /* FALLTHROUGH */
1.80 schwarze 1879: case '%':
1.77 schwarze 1880: /* FALLTHROUGH */
1.80 schwarze 1881: case '&':
1.77 schwarze 1882: /* FALLTHROUGH */
1.80 schwarze 1883: case ':':
1.77 schwarze 1884: break;
1885: case '<':
1886: switch (v[*pos + 1]) {
1.80 schwarze 1887: case '=':
1.77 schwarze 1888: *res = 'l';
1889: (*pos)++;
1890: break;
1.80 schwarze 1891: case '>':
1.77 schwarze 1892: *res = '!';
1893: (*pos)++;
1894: break;
1.80 schwarze 1895: case '?':
1.77 schwarze 1896: *res = 'i';
1897: (*pos)++;
1898: break;
1899: default:
1900: break;
1901: }
1902: break;
1903: case '>':
1904: switch (v[*pos + 1]) {
1.80 schwarze 1905: case '=':
1.77 schwarze 1906: *res = 'g';
1907: (*pos)++;
1908: break;
1.80 schwarze 1909: case '?':
1.77 schwarze 1910: *res = 'a';
1911: (*pos)++;
1912: break;
1913: default:
1914: break;
1915: }
1916: break;
1917: case '=':
1918: if ('=' == v[*pos + 1])
1919: (*pos)++;
1920: break;
1921: default:
1922: return(0);
1923: }
1924: (*pos)++;
1925:
1926: return(*res);
1927: }
1928:
1929: /*
1930: * Evaluate either a parenthesized numeric expression
1931: * or a single signed integer number.
1932: */
1933: static int
1.106 schwarze 1934: roff_evalpar(struct roff *r, int ln,
1935: const char *v, int *pos, int *res)
1.77 schwarze 1936: {
1937:
1938: if ('(' != v[*pos])
1939: return(roff_getnum(v, pos, res));
1940:
1941: (*pos)++;
1.106 schwarze 1942: if ( ! roff_evalnum(r, ln, v, pos, res, 1))
1.77 schwarze 1943: return(0);
1944:
1.79 schwarze 1945: /*
1946: * Omission of the closing parenthesis
1947: * is an error in validation mode,
1948: * but ignored in evaluation mode.
1949: */
1950:
1.77 schwarze 1951: if (')' == v[*pos])
1952: (*pos)++;
1.79 schwarze 1953: else if (NULL == res)
1954: return(0);
1.77 schwarze 1955:
1956: return(1);
1957: }
1958:
1959: /*
1960: * Evaluate a complete numeric expression.
1961: * Proceed left to right, there is no concept of precedence.
1962: */
1963: static int
1.106 schwarze 1964: roff_evalnum(struct roff *r, int ln, const char *v,
1965: int *pos, int *res, int skipwhite)
1.77 schwarze 1966: {
1967: int mypos, operand2;
1968: char operator;
1969:
1970: if (NULL == pos) {
1971: mypos = 0;
1972: pos = &mypos;
1973: }
1974:
1975: if (skipwhite)
1976: while (isspace((unsigned char)v[*pos]))
1977: (*pos)++;
1978:
1.106 schwarze 1979: if ( ! roff_evalpar(r, ln, v, pos, res))
1.77 schwarze 1980: return(0);
1981:
1982: while (1) {
1983: if (skipwhite)
1984: while (isspace((unsigned char)v[*pos]))
1985: (*pos)++;
1986:
1987: if ( ! roff_getop(v, pos, &operator))
1988: break;
1989:
1990: if (skipwhite)
1991: while (isspace((unsigned char)v[*pos]))
1992: (*pos)++;
1993:
1.106 schwarze 1994: if ( ! roff_evalpar(r, ln, v, pos, &operand2))
1.77 schwarze 1995: return(0);
1996:
1997: if (skipwhite)
1998: while (isspace((unsigned char)v[*pos]))
1999: (*pos)++;
1.79 schwarze 2000:
2001: if (NULL == res)
2002: continue;
1.77 schwarze 2003:
2004: switch (operator) {
1.80 schwarze 2005: case '+':
1.77 schwarze 2006: *res += operand2;
2007: break;
1.80 schwarze 2008: case '-':
1.77 schwarze 2009: *res -= operand2;
2010: break;
1.80 schwarze 2011: case '*':
1.77 schwarze 2012: *res *= operand2;
2013: break;
1.80 schwarze 2014: case '/':
1.116 schwarze 2015: if (operand2 == 0) {
1.106 schwarze 2016: mandoc_msg(MANDOCERR_DIVZERO,
2017: r->parse, ln, *pos, v);
2018: *res = 0;
2019: break;
2020: }
1.77 schwarze 2021: *res /= operand2;
2022: break;
1.80 schwarze 2023: case '%':
1.116 schwarze 2024: if (operand2 == 0) {
2025: mandoc_msg(MANDOCERR_DIVZERO,
2026: r->parse, ln, *pos, v);
2027: *res = 0;
2028: break;
2029: }
1.77 schwarze 2030: *res %= operand2;
2031: break;
1.80 schwarze 2032: case '<':
1.77 schwarze 2033: *res = *res < operand2;
2034: break;
1.80 schwarze 2035: case '>':
1.77 schwarze 2036: *res = *res > operand2;
2037: break;
1.80 schwarze 2038: case 'l':
1.77 schwarze 2039: *res = *res <= operand2;
2040: break;
1.80 schwarze 2041: case 'g':
1.77 schwarze 2042: *res = *res >= operand2;
2043: break;
1.80 schwarze 2044: case '=':
1.77 schwarze 2045: *res = *res == operand2;
2046: break;
1.80 schwarze 2047: case '!':
1.77 schwarze 2048: *res = *res != operand2;
2049: break;
1.80 schwarze 2050: case '&':
1.77 schwarze 2051: *res = *res && operand2;
2052: break;
1.80 schwarze 2053: case ':':
1.77 schwarze 2054: *res = *res || operand2;
2055: break;
1.80 schwarze 2056: case 'i':
1.77 schwarze 2057: if (operand2 < *res)
2058: *res = operand2;
2059: break;
1.80 schwarze 2060: case 'a':
1.77 schwarze 2061: if (operand2 > *res)
2062: *res = operand2;
2063: break;
2064: default:
2065: abort();
2066: }
2067: }
2068: return(1);
2069: }
2070:
1.52 schwarze 2071: void
1.60 schwarze 2072: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.41 schwarze 2073: {
1.52 schwarze 2074: struct roffreg *reg;
2075:
2076: /* Search for an existing register with the same name. */
2077: reg = r->regtab;
2078:
2079: while (reg && strcmp(name, reg->key.p))
2080: reg = reg->next;
1.41 schwarze 2081:
1.52 schwarze 2082: if (NULL == reg) {
2083: /* Create a new register. */
2084: reg = mandoc_malloc(sizeof(struct roffreg));
2085: reg->key.p = mandoc_strdup(name);
2086: reg->key.sz = strlen(name);
1.60 schwarze 2087: reg->val = 0;
1.52 schwarze 2088: reg->next = r->regtab;
2089: r->regtab = reg;
2090: }
2091:
1.60 schwarze 2092: if ('+' == sign)
2093: reg->val += val;
2094: else if ('-' == sign)
2095: reg->val -= val;
2096: else
2097: reg->val = val;
1.41 schwarze 2098: }
2099:
1.65 schwarze 2100: /*
2101: * Handle some predefined read-only number registers.
2102: * For now, return -1 if the requested register is not predefined;
2103: * in case a predefined read-only register having the value -1
2104: * were to turn up, another special value would have to be chosen.
2105: */
2106: static int
2107: roff_getregro(const char *name)
2108: {
2109:
2110: switch (*name) {
1.80 schwarze 2111: case 'A': /* ASCII approximation mode is always off. */
1.65 schwarze 2112: return(0);
1.80 schwarze 2113: case 'g': /* Groff compatibility mode is always on. */
1.65 schwarze 2114: return(1);
1.80 schwarze 2115: case 'H': /* Fixed horizontal resolution. */
1.65 schwarze 2116: return (24);
1.80 schwarze 2117: case 'j': /* Always adjust left margin only. */
1.65 schwarze 2118: return(0);
1.80 schwarze 2119: case 'T': /* Some output device is always defined. */
1.65 schwarze 2120: return(1);
1.80 schwarze 2121: case 'V': /* Fixed vertical resolution. */
1.65 schwarze 2122: return (40);
2123: default:
2124: return (-1);
2125: }
2126: }
2127:
1.53 schwarze 2128: int
1.52 schwarze 2129: roff_getreg(const struct roff *r, const char *name)
1.41 schwarze 2130: {
1.52 schwarze 2131: struct roffreg *reg;
1.65 schwarze 2132: int val;
2133:
2134: if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) {
2135: val = roff_getregro(name + 1);
2136: if (-1 != val)
2137: return (val);
2138: }
1.52 schwarze 2139:
2140: for (reg = r->regtab; reg; reg = reg->next)
2141: if (0 == strcmp(name, reg->key.p))
1.53 schwarze 2142: return(reg->val);
2143:
2144: return(0);
2145: }
2146:
2147: static int
2148: roff_getregn(const struct roff *r, const char *name, size_t len)
2149: {
2150: struct roffreg *reg;
1.65 schwarze 2151: int val;
2152:
2153: if ('.' == name[0] && 2 == len) {
2154: val = roff_getregro(name + 1);
2155: if (-1 != val)
2156: return (val);
2157: }
1.53 schwarze 2158:
2159: for (reg = r->regtab; reg; reg = reg->next)
2160: if (len == reg->key.sz &&
2161: 0 == strncmp(name, reg->key.p, len))
2162: return(reg->val);
1.41 schwarze 2163:
1.52 schwarze 2164: return(0);
1.41 schwarze 2165: }
2166:
1.52 schwarze 2167: static void
2168: roff_freereg(struct roffreg *reg)
1.41 schwarze 2169: {
1.52 schwarze 2170: struct roffreg *old_reg;
1.41 schwarze 2171:
1.52 schwarze 2172: while (NULL != reg) {
2173: free(reg->key.p);
2174: old_reg = reg;
2175: reg = reg->next;
2176: free(old_reg);
2177: }
1.41 schwarze 2178: }
1.7 schwarze 2179:
2180: static enum rofferr
1.6 schwarze 2181: roff_nr(ROFF_ARGS)
1.1 schwarze 2182: {
1.85 schwarze 2183: char *key, *val;
2184: size_t keysz;
1.37 schwarze 2185: int iv;
1.60 schwarze 2186: char sign;
1.6 schwarze 2187:
1.110 schwarze 2188: key = val = buf->buf + pos;
2189: if (*key == '\0')
1.85 schwarze 2190: return(ROFF_IGN);
2191:
2192: keysz = roff_getname(r, &val, ln, pos);
1.110 schwarze 2193: if (key[keysz] == '\\')
1.85 schwarze 2194: return(ROFF_IGN);
2195: key[keysz] = '\0';
1.6 schwarze 2196:
1.60 schwarze 2197: sign = *val;
1.110 schwarze 2198: if (sign == '+' || sign == '-')
1.60 schwarze 2199: val++;
2200:
1.106 schwarze 2201: if (roff_evalnum(r, ln, val, NULL, &iv, 0))
1.77 schwarze 2202: roff_setreg(r, key, iv, sign);
1.1 schwarze 2203:
1.76 schwarze 2204: return(ROFF_IGN);
2205: }
2206:
2207: static enum rofferr
2208: roff_rr(ROFF_ARGS)
2209: {
2210: struct roffreg *reg, **prev;
1.85 schwarze 2211: char *name, *cp;
2212: size_t namesz;
1.76 schwarze 2213:
1.110 schwarze 2214: name = cp = buf->buf + pos;
2215: if (*name == '\0')
1.85 schwarze 2216: return(ROFF_IGN);
2217: namesz = roff_getname(r, &cp, ln, pos);
2218: name[namesz] = '\0';
1.76 schwarze 2219:
2220: prev = &r->regtab;
2221: while (1) {
2222: reg = *prev;
1.110 schwarze 2223: if (reg == NULL || !strcmp(name, reg->key.p))
1.76 schwarze 2224: break;
2225: prev = ®->next;
2226: }
1.110 schwarze 2227: if (reg != NULL) {
1.76 schwarze 2228: *prev = reg->next;
2229: free(reg->key.p);
2230: free(reg);
2231: }
1.29 schwarze 2232: return(ROFF_IGN);
2233: }
2234:
2235: static enum rofferr
2236: roff_rm(ROFF_ARGS)
2237: {
2238: const char *name;
2239: char *cp;
1.85 schwarze 2240: size_t namesz;
1.29 schwarze 2241:
1.110 schwarze 2242: cp = buf->buf + pos;
2243: while (*cp != '\0') {
1.85 schwarze 2244: name = cp;
1.110 schwarze 2245: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.85 schwarze 2246: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.110 schwarze 2247: if (name[namesz] == '\\')
1.85 schwarze 2248: break;
1.29 schwarze 2249: }
1.51 schwarze 2250: return(ROFF_IGN);
2251: }
2252:
2253: static enum rofferr
2254: roff_it(ROFF_ARGS)
2255: {
2256: char *cp;
2257: size_t len;
2258: int iv;
2259:
2260: /* Parse the number of lines. */
1.110 schwarze 2261: cp = buf->buf + pos;
1.51 schwarze 2262: len = strcspn(cp, " \t");
2263: cp[len] = '\0';
2264: if ((iv = mandoc_strntoi(cp, len, 10)) <= 0) {
1.95 schwarze 2265: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.110 schwarze 2266: ln, ppos, buf->buf + 1);
1.51 schwarze 2267: return(ROFF_IGN);
2268: }
2269: cp += len + 1;
2270:
2271: /* Arm the input line trap. */
2272: roffit_lines = iv;
2273: roffit_macro = mandoc_strdup(cp);
1.2 schwarze 2274: return(ROFF_IGN);
1.47 schwarze 2275: }
2276:
2277: static enum rofferr
2278: roff_Dd(ROFF_ARGS)
2279: {
2280: const char *const *cp;
2281:
1.99 schwarze 2282: if ((r->options & (MPARSE_MDOC | MPARSE_QUICK)) == 0)
1.47 schwarze 2283: for (cp = __mdoc_reserved; *cp; cp++)
2284: roff_setstr(r, *cp, NULL, 0);
2285:
1.99 schwarze 2286: if (r->format == 0)
2287: r->format = MPARSE_MDOC;
2288:
1.47 schwarze 2289: return(ROFF_CONT);
2290: }
2291:
2292: static enum rofferr
2293: roff_TH(ROFF_ARGS)
2294: {
2295: const char *const *cp;
2296:
1.99 schwarze 2297: if ((r->options & MPARSE_QUICK) == 0)
1.47 schwarze 2298: for (cp = __man_reserved; *cp; cp++)
2299: roff_setstr(r, *cp, NULL, 0);
2300:
1.99 schwarze 2301: if (r->format == 0)
2302: r->format = MPARSE_MAN;
2303:
1.47 schwarze 2304: return(ROFF_CONT);
1.14 schwarze 2305: }
2306:
2307: static enum rofferr
1.27 schwarze 2308: roff_TE(ROFF_ARGS)
2309: {
2310:
2311: if (NULL == r->tbl)
1.94 schwarze 2312: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2313: ln, ppos, "TE");
1.27 schwarze 2314: else
1.41 schwarze 2315: tbl_end(&r->tbl);
1.27 schwarze 2316:
2317: return(ROFF_IGN);
2318: }
2319:
2320: static enum rofferr
2321: roff_T_(ROFF_ARGS)
2322: {
2323:
2324: if (NULL == r->tbl)
1.94 schwarze 2325: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2326: ln, ppos, "T&");
1.27 schwarze 2327: else
2328: tbl_restart(ppos, ln, r->tbl);
2329:
2330: return(ROFF_IGN);
2331: }
2332:
1.102 schwarze 2333: /*
2334: * Handle in-line equation delimiters.
2335: */
2336: static enum rofferr
1.110 schwarze 2337: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.41 schwarze 2338: {
1.105 schwarze 2339: char *cp1, *cp2;
2340: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.41 schwarze 2341:
1.102 schwarze 2342: /*
2343: * Outside equations, look for an opening delimiter.
2344: * If we are inside an equation, we already know it is
2345: * in-line, or this function wouldn't have been called;
2346: * so look for a closing delimiter.
2347: */
2348:
1.110 schwarze 2349: cp1 = buf->buf + pos;
1.102 schwarze 2350: cp2 = strchr(cp1, r->eqn == NULL ?
2351: r->last_eqn->odelim : r->last_eqn->cdelim);
2352: if (cp2 == NULL)
2353: return(ROFF_CONT);
2354:
1.105 schwarze 2355: *cp2++ = '\0';
2356: bef_pr = bef_nl = aft_nl = aft_pr = "";
2357:
2358: /* Handle preceding text, protecting whitespace. */
2359:
1.110 schwarze 2360: if (*buf->buf != '\0') {
1.105 schwarze 2361: if (r->eqn == NULL)
2362: bef_pr = "\\&";
2363: bef_nl = "\n";
2364: }
2365:
2366: /*
2367: * Prepare replacing the delimiter with an equation macro
2368: * and drop leading white space from the equation.
2369: */
1.102 schwarze 2370:
1.105 schwarze 2371: if (r->eqn == NULL) {
2372: while (*cp2 == ' ')
2373: cp2++;
2374: mac = ".EQ";
2375: } else
2376: mac = ".EN";
2377:
2378: /* Handle following text, protecting whitespace. */
2379:
2380: if (*cp2 != '\0') {
2381: aft_nl = "\n";
2382: if (r->eqn != NULL)
2383: aft_pr = "\\&";
2384: }
2385:
2386: /* Do the actual replacement. */
2387:
1.110 schwarze 2388: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.105 schwarze 2389: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.110 schwarze 2390: free(buf->buf);
2391: buf->buf = cp1;
1.102 schwarze 2392:
2393: /* Toggle the in-line state of the eqn subsystem. */
2394:
2395: r->eqn_inline = r->eqn == NULL;
2396: return(ROFF_REPARSE);
1.41 schwarze 2397: }
2398:
1.107 schwarze 2399: static enum rofferr
2400: roff_EQ(ROFF_ARGS)
1.32 schwarze 2401: {
1.41 schwarze 2402: struct eqn_node *e;
1.32 schwarze 2403:
1.110 schwarze 2404: assert(r->eqn == NULL);
1.107 schwarze 2405: e = eqn_alloc(ppos, ln, r->parse);
1.32 schwarze 2406:
1.102 schwarze 2407: if (r->last_eqn) {
1.32 schwarze 2408: r->last_eqn->next = e;
1.102 schwarze 2409: e->delim = r->last_eqn->delim;
2410: e->odelim = r->last_eqn->odelim;
2411: e->cdelim = r->last_eqn->cdelim;
2412: } else
1.32 schwarze 2413: r->first_eqn = r->last_eqn = e;
2414:
2415: r->eqn = r->last_eqn = e;
1.41 schwarze 2416:
1.110 schwarze 2417: if (buf->buf[pos] != '\0')
1.107 schwarze 2418: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 2419: ".EQ %s", buf->buf + pos);
1.41 schwarze 2420:
1.32 schwarze 2421: return(ROFF_IGN);
2422: }
2423:
2424: static enum rofferr
2425: roff_EN(ROFF_ARGS)
2426: {
2427:
1.94 schwarze 2428: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
1.32 schwarze 2429: return(ROFF_IGN);
2430: }
2431:
2432: static enum rofferr
1.27 schwarze 2433: roff_TS(ROFF_ARGS)
2434: {
1.49 schwarze 2435: struct tbl_node *tbl;
1.27 schwarze 2436:
2437: if (r->tbl) {
1.94 schwarze 2438: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
2439: ln, ppos, "TS breaks TS");
1.41 schwarze 2440: tbl_end(&r->tbl);
1.27 schwarze 2441: }
2442:
1.49 schwarze 2443: tbl = tbl_alloc(ppos, ln, r->parse);
1.27 schwarze 2444:
2445: if (r->last_tbl)
1.49 schwarze 2446: r->last_tbl->next = tbl;
1.27 schwarze 2447: else
1.49 schwarze 2448: r->first_tbl = r->last_tbl = tbl;
1.27 schwarze 2449:
1.49 schwarze 2450: r->tbl = r->last_tbl = tbl;
1.27 schwarze 2451: return(ROFF_IGN);
1.123 schwarze 2452: }
2453:
2454: static enum rofferr
2455: roff_brp(ROFF_ARGS)
2456: {
2457:
2458: buf->buf[pos - 1] = '\0';
2459: return(ROFF_CONT);
1.27 schwarze 2460: }
2461:
2462: static enum rofferr
1.48 schwarze 2463: roff_cc(ROFF_ARGS)
2464: {
2465: const char *p;
2466:
1.110 schwarze 2467: p = buf->buf + pos;
1.48 schwarze 2468:
1.110 schwarze 2469: if (*p == '\0' || (r->control = *p++) == '.')
1.48 schwarze 2470: r->control = 0;
2471:
1.110 schwarze 2472: if (*p != '\0')
1.48 schwarze 2473: mandoc_msg(MANDOCERR_ARGCOUNT, r->parse, ln, ppos, NULL);
2474:
2475: return(ROFF_IGN);
2476: }
2477:
2478: static enum rofferr
1.42 schwarze 2479: roff_tr(ROFF_ARGS)
2480: {
2481: const char *p, *first, *second;
2482: size_t fsz, ssz;
2483: enum mandoc_esc esc;
2484:
1.110 schwarze 2485: p = buf->buf + pos;
1.42 schwarze 2486:
1.110 schwarze 2487: if (*p == '\0') {
1.42 schwarze 2488: mandoc_msg(MANDOCERR_ARGCOUNT, r->parse, ln, ppos, NULL);
2489: return(ROFF_IGN);
2490: }
2491:
1.110 schwarze 2492: while (*p != '\0') {
1.42 schwarze 2493: fsz = ssz = 1;
2494:
2495: first = p++;
1.110 schwarze 2496: if (*first == '\\') {
1.42 schwarze 2497: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 2498: if (esc == ESCAPE_ERROR) {
1.92 schwarze 2499: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 2500: ln, (int)(p - buf->buf), first);
1.42 schwarze 2501: return(ROFF_IGN);
2502: }
2503: fsz = (size_t)(p - first);
2504: }
2505:
2506: second = p++;
1.110 schwarze 2507: if (*second == '\\') {
1.42 schwarze 2508: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 2509: if (esc == ESCAPE_ERROR) {
1.92 schwarze 2510: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 2511: ln, (int)(p - buf->buf), second);
1.42 schwarze 2512: return(ROFF_IGN);
2513: }
2514: ssz = (size_t)(p - second);
1.110 schwarze 2515: } else if (*second == '\0') {
1.80 schwarze 2516: mandoc_msg(MANDOCERR_ARGCOUNT, r->parse,
1.110 schwarze 2517: ln, (int)(p - buf->buf), NULL);
1.42 schwarze 2518: second = " ";
2519: p--;
2520: }
2521:
2522: if (fsz > 1) {
1.80 schwarze 2523: roff_setstrn(&r->xmbtab, first, fsz,
2524: second, ssz, 0);
1.42 schwarze 2525: continue;
2526: }
2527:
1.110 schwarze 2528: if (r->xtab == NULL)
1.80 schwarze 2529: r->xtab = mandoc_calloc(128,
2530: sizeof(struct roffstr));
1.42 schwarze 2531:
2532: free(r->xtab[(int)*first].p);
2533: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
2534: r->xtab[(int)*first].sz = ssz;
2535: }
2536:
2537: return(ROFF_IGN);
2538: }
2539:
2540: static enum rofferr
1.14 schwarze 2541: roff_so(ROFF_ARGS)
2542: {
1.121 schwarze 2543: char *name, *cp;
1.15 schwarze 2544:
1.110 schwarze 2545: name = buf->buf + pos;
1.97 schwarze 2546: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.14 schwarze 2547:
1.22 schwarze 2548: /*
2549: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
2550: * opening anything that's not in our cwd or anything beneath
2551: * it. Thus, explicitly disallow traversing up the file-system
2552: * or using absolute paths.
2553: */
2554:
1.110 schwarze 2555: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.83 schwarze 2556: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
2557: ".so %s", name);
1.121 schwarze 2558: buf->sz = mandoc_asprintf(&cp,
2559: ".sp\nSee the file %s.\n.sp", name) + 1;
2560: free(buf->buf);
2561: buf->buf = cp;
2562: *offs = 0;
2563: return(ROFF_REPARSE);
1.14 schwarze 2564: }
2565:
2566: *offs = pos;
2567: return(ROFF_SO);
1.7 schwarze 2568: }
2569:
1.16 schwarze 2570: static enum rofferr
2571: roff_userdef(ROFF_ARGS)
1.12 schwarze 2572: {
1.16 schwarze 2573: const char *arg[9];
2574: char *cp, *n1, *n2;
1.25 schwarze 2575: int i;
1.12 schwarze 2576:
1.16 schwarze 2577: /*
2578: * Collect pointers to macro argument strings
1.61 schwarze 2579: * and NUL-terminate them.
1.16 schwarze 2580: */
1.110 schwarze 2581: cp = buf->buf + pos;
1.25 schwarze 2582: for (i = 0; i < 9; i++)
1.110 schwarze 2583: arg[i] = *cp == '\0' ? "" :
1.35 schwarze 2584: mandoc_getarg(r->parse, &cp, ln, &pos);
1.16 schwarze 2585:
2586: /*
2587: * Expand macro arguments.
1.12 schwarze 2588: */
1.110 schwarze 2589: buf->sz = 0;
1.16 schwarze 2590: n1 = cp = mandoc_strdup(r->current_string);
1.110 schwarze 2591: while ((cp = strstr(cp, "\\$")) != NULL) {
1.16 schwarze 2592: i = cp[2] - '1';
2593: if (0 > i || 8 < i) {
2594: /* Not an argument invocation. */
2595: cp += 2;
2596: continue;
2597: }
1.82 schwarze 2598: *cp = '\0';
1.110 schwarze 2599: buf->sz = mandoc_asprintf(&n2, "%s%s%s",
1.82 schwarze 2600: n1, arg[i], cp + 3) + 1;
1.16 schwarze 2601: cp = n2 + (cp - n1);
2602: free(n1);
2603: n1 = n2;
1.12 schwarze 2604: }
2605:
1.16 schwarze 2606: /*
2607: * Replace the macro invocation
2608: * by the expanded macro.
2609: */
1.110 schwarze 2610: free(buf->buf);
2611: buf->buf = n1;
2612: if (buf->sz == 0)
2613: buf->sz = strlen(buf->buf) + 1;
1.120 schwarze 2614: *offs = 0;
1.16 schwarze 2615:
1.110 schwarze 2616: return(buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
1.16 schwarze 2617: ROFF_REPARSE : ROFF_APPEND);
1.12 schwarze 2618: }
1.28 schwarze 2619:
1.85 schwarze 2620: static size_t
1.28 schwarze 2621: roff_getname(struct roff *r, char **cpp, int ln, int pos)
2622: {
2623: char *name, *cp;
1.85 schwarze 2624: size_t namesz;
1.28 schwarze 2625:
2626: name = *cpp;
2627: if ('\0' == *name)
1.85 schwarze 2628: return(0);
1.28 schwarze 2629:
1.85 schwarze 2630: /* Read until end of name and terminate it with NUL. */
2631: for (cp = name; 1; cp++) {
2632: if ('\0' == *cp || ' ' == *cp) {
2633: namesz = cp - name;
2634: break;
2635: }
1.28 schwarze 2636: if ('\\' != *cp)
2637: continue;
1.88 schwarze 2638: namesz = cp - name;
2639: if ('{' == cp[1] || '}' == cp[1])
2640: break;
1.28 schwarze 2641: cp++;
2642: if ('\\' == *cp)
2643: continue;
1.97 schwarze 2644: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
2645: "%.*s", (int)(cp - name + 1), name);
1.85 schwarze 2646: mandoc_escape((const char **)&cp, NULL, NULL);
2647: break;
1.28 schwarze 2648: }
2649:
2650: /* Read past spaces. */
2651: while (' ' == *cp)
2652: cp++;
2653:
2654: *cpp = cp;
1.85 schwarze 2655: return(namesz);
1.28 schwarze 2656: }
2657:
1.16 schwarze 2658: /*
2659: * Store *string into the user-defined string called *name.
2660: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.66 schwarze 2661: * append == 0: replace mode
2662: * append == 1: single-line append mode
2663: * append == 2: multiline append mode, append '\n' after each call
1.16 schwarze 2664: */
1.8 schwarze 2665: static void
1.16 schwarze 2666: roff_setstr(struct roff *r, const char *name, const char *string,
1.66 schwarze 2667: int append)
1.7 schwarze 2668: {
1.42 schwarze 2669:
2670: roff_setstrn(&r->strtab, name, strlen(name), string,
1.80 schwarze 2671: string ? strlen(string) : 0, append);
1.42 schwarze 2672: }
2673:
2674: static void
2675: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.66 schwarze 2676: const char *string, size_t stringsz, int append)
1.42 schwarze 2677: {
2678: struct roffkv *n;
2679: char *c;
2680: int i;
2681: size_t oldch, newch;
1.7 schwarze 2682:
1.16 schwarze 2683: /* Search for an existing string with the same name. */
1.42 schwarze 2684: n = *r;
2685:
1.84 schwarze 2686: while (n && (namesz != n->key.sz ||
2687: strncmp(n->key.p, name, namesz)))
1.7 schwarze 2688: n = n->next;
1.8 schwarze 2689:
2690: if (NULL == n) {
1.16 schwarze 2691: /* Create a new string table entry. */
1.42 schwarze 2692: n = mandoc_malloc(sizeof(struct roffkv));
2693: n->key.p = mandoc_strndup(name, namesz);
2694: n->key.sz = namesz;
2695: n->val.p = NULL;
2696: n->val.sz = 0;
2697: n->next = *r;
2698: *r = n;
1.66 schwarze 2699: } else if (0 == append) {
1.42 schwarze 2700: free(n->val.p);
2701: n->val.p = NULL;
2702: n->val.sz = 0;
1.16 schwarze 2703: }
2704:
2705: if (NULL == string)
2706: return;
2707:
2708: /*
2709: * One additional byte for the '\n' in multiline mode,
2710: * and one for the terminating '\0'.
2711: */
1.66 schwarze 2712: newch = stringsz + (1 < append ? 2u : 1u);
1.42 schwarze 2713:
2714: if (NULL == n->val.p) {
2715: n->val.p = mandoc_malloc(newch);
2716: *n->val.p = '\0';
1.16 schwarze 2717: oldch = 0;
2718: } else {
1.42 schwarze 2719: oldch = n->val.sz;
2720: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.16 schwarze 2721: }
2722:
2723: /* Skip existing content in the destination buffer. */
1.42 schwarze 2724: c = n->val.p + (int)oldch;
1.16 schwarze 2725:
2726: /* Append new content to the destination buffer. */
1.42 schwarze 2727: i = 0;
2728: while (i < (int)stringsz) {
1.16 schwarze 2729: /*
2730: * Rudimentary roff copy mode:
2731: * Handle escaped backslashes.
2732: */
1.42 schwarze 2733: if ('\\' == string[i] && '\\' == string[i + 1])
2734: i++;
2735: *c++ = string[i++];
1.16 schwarze 2736: }
1.8 schwarze 2737:
1.16 schwarze 2738: /* Append terminating bytes. */
1.66 schwarze 2739: if (1 < append)
1.16 schwarze 2740: *c++ = '\n';
1.42 schwarze 2741:
1.16 schwarze 2742: *c = '\0';
1.42 schwarze 2743: n->val.sz = (int)(c - n->val.p);
1.7 schwarze 2744: }
2745:
1.8 schwarze 2746: static const char *
2747: roff_getstrn(const struct roff *r, const char *name, size_t len)
1.7 schwarze 2748: {
1.42 schwarze 2749: const struct roffkv *n;
1.64 schwarze 2750: int i;
1.7 schwarze 2751:
1.42 schwarze 2752: for (n = r->strtab; n; n = n->next)
1.80 schwarze 2753: if (0 == strncmp(name, n->key.p, len) &&
2754: '\0' == n->key.p[(int)len])
1.42 schwarze 2755: return(n->val.p);
1.64 schwarze 2756:
2757: for (i = 0; i < PREDEFS_MAX; i++)
2758: if (0 == strncmp(name, predefs[i].name, len) &&
2759: '\0' == predefs[i].name[(int)len])
2760: return(predefs[i].str);
1.8 schwarze 2761:
1.42 schwarze 2762: return(NULL);
1.7 schwarze 2763: }
2764:
1.8 schwarze 2765: static void
1.42 schwarze 2766: roff_freestr(struct roffkv *r)
1.7 schwarze 2767: {
1.42 schwarze 2768: struct roffkv *n, *nn;
1.7 schwarze 2769:
1.42 schwarze 2770: for (n = r; n; n = nn) {
2771: free(n->key.p);
2772: free(n->val.p);
1.7 schwarze 2773: nn = n->next;
2774: free(n);
2775: }
1.27 schwarze 2776: }
2777:
2778: const struct tbl_span *
2779: roff_span(const struct roff *r)
2780: {
1.80 schwarze 2781:
1.27 schwarze 2782: return(r->tbl ? tbl_span(r->tbl) : NULL);
1.32 schwarze 2783: }
2784:
2785: const struct eqn *
2786: roff_eqn(const struct roff *r)
2787: {
1.80 schwarze 2788:
1.32 schwarze 2789: return(r->last_eqn ? &r->last_eqn->eqn : NULL);
1.42 schwarze 2790: }
2791:
2792: /*
2793: * Duplicate an input string, making the appropriate character
2794: * conversations (as stipulated by `tr') along the way.
2795: * Returns a heap-allocated string with all the replacements made.
2796: */
2797: char *
2798: roff_strdup(const struct roff *r, const char *p)
2799: {
2800: const struct roffkv *cp;
2801: char *res;
2802: const char *pp;
2803: size_t ssz, sz;
2804: enum mandoc_esc esc;
2805:
2806: if (NULL == r->xmbtab && NULL == r->xtab)
2807: return(mandoc_strdup(p));
2808: else if ('\0' == *p)
2809: return(mandoc_strdup(""));
2810:
2811: /*
2812: * Step through each character looking for term matches
2813: * (remember that a `tr' can be invoked with an escape, which is
2814: * a glyph but the escape is multi-character).
2815: * We only do this if the character hash has been initialised
2816: * and the string is >0 length.
2817: */
2818:
2819: res = NULL;
2820: ssz = 0;
2821:
2822: while ('\0' != *p) {
2823: if ('\\' != *p && r->xtab && r->xtab[(int)*p].p) {
2824: sz = r->xtab[(int)*p].sz;
2825: res = mandoc_realloc(res, ssz + sz + 1);
2826: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
2827: ssz += sz;
2828: p++;
2829: continue;
2830: } else if ('\\' != *p) {
2831: res = mandoc_realloc(res, ssz + 2);
2832: res[ssz++] = *p++;
2833: continue;
2834: }
2835:
2836: /* Search for term matches. */
2837: for (cp = r->xmbtab; cp; cp = cp->next)
2838: if (0 == strncmp(p, cp->key.p, cp->key.sz))
2839: break;
2840:
2841: if (NULL != cp) {
2842: /*
2843: * A match has been found.
2844: * Append the match to the array and move
2845: * forward by its keysize.
2846: */
1.80 schwarze 2847: res = mandoc_realloc(res,
2848: ssz + cp->val.sz + 1);
1.42 schwarze 2849: memcpy(res + ssz, cp->val.p, cp->val.sz);
2850: ssz += cp->val.sz;
2851: p += (int)cp->key.sz;
2852: continue;
2853: }
2854:
2855: /*
2856: * Handle escapes carefully: we need to copy
2857: * over just the escape itself, or else we might
2858: * do replacements within the escape itself.
2859: * Make sure to pass along the bogus string.
2860: */
2861: pp = p++;
2862: esc = mandoc_escape(&p, NULL, NULL);
2863: if (ESCAPE_ERROR == esc) {
2864: sz = strlen(pp);
2865: res = mandoc_realloc(res, ssz + sz + 1);
2866: memcpy(res + ssz, pp, sz);
2867: break;
2868: }
1.80 schwarze 2869: /*
2870: * We bail out on bad escapes.
1.42 schwarze 2871: * No need to warn: we already did so when
2872: * roff_res() was called.
2873: */
2874: sz = (int)(p - pp);
2875: res = mandoc_realloc(res, ssz + sz + 1);
2876: memcpy(res + ssz, pp, sz);
2877: ssz += sz;
2878: }
2879:
2880: res[(int)ssz] = '\0';
2881: return(res);
1.99 schwarze 2882: }
2883:
2884: int
2885: roff_getformat(const struct roff *r)
2886: {
2887:
2888: return(r->format);
1.48 schwarze 2889: }
2890:
2891: /*
1.80 schwarze 2892: * Find out whether a line is a macro line or not.
1.48 schwarze 2893: * If it is, adjust the current position and return one; if it isn't,
2894: * return zero and don't change the current position.
2895: * If the control character has been set with `.cc', then let that grain
2896: * precedence.
2897: * This is slighly contrary to groff, where using the non-breaking
2898: * control character when `cc' has been invoked will cause the
2899: * non-breaking macro contents to be printed verbatim.
2900: */
2901: int
2902: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
2903: {
2904: int pos;
2905:
2906: pos = *ppos;
2907:
2908: if (0 != r->control && cp[pos] == r->control)
2909: pos++;
2910: else if (0 != r->control)
2911: return(0);
2912: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
2913: pos += 2;
2914: else if ('.' == cp[pos] || '\'' == cp[pos])
2915: pos++;
2916: else
2917: return(0);
2918:
2919: while (' ' == cp[pos] || '\t' == cp[pos])
2920: pos++;
2921:
2922: *ppos = pos;
2923: return(1);
1.1 schwarze 2924: }
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