Annotation of src/usr.bin/mandoc/roff.c, Revision 1.135
1.135 ! schwarze 1: /* $OpenBSD: roff.c,v 1.134 2015/02/17 17:55:12 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,
1.128 schwarze 180: ROFF_na,
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,
1.133 schwarze 397: const char *, int *, 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);
1.133 schwarze 403: static int roff_getnum(const char *, int *, int *, int);
1.56 schwarze 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:
1.133 schwarze 442: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
443: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
444:
1.3 schwarze 445: static struct roffmac *hash[HASHWIDTH];
446:
447: static struct roffmac roffs[ROFF_MAX] = {
1.123 schwarze 448: { "ab", roff_unsupp, NULL, NULL, 0, NULL },
1.21 schwarze 449: { "ad", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 450: { "af", roff_line_ignore, NULL, NULL, 0, NULL },
451: { "aln", roff_unsupp, NULL, NULL, 0, NULL },
452: { "als", roff_unsupp, NULL, NULL, 0, NULL },
1.3 schwarze 453: { "am", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.123 schwarze 454: { "am1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.3 schwarze 455: { "ami", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.123 schwarze 456: { "ami1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.66 schwarze 457: { "as", roff_ds, NULL, NULL, 0, NULL },
1.123 schwarze 458: { "as1", roff_ds, NULL, NULL, 0, NULL },
459: { "asciify", roff_unsupp, NULL, NULL, 0, NULL },
460: { "backtrace", roff_line_ignore, NULL, NULL, 0, NULL },
461: { "bd", roff_line_ignore, NULL, NULL, 0, NULL },
462: { "bleedat", roff_line_ignore, NULL, NULL, 0, NULL },
463: { "blm", roff_unsupp, NULL, NULL, 0, NULL },
464: { "box", roff_unsupp, NULL, NULL, 0, NULL },
465: { "boxa", roff_unsupp, NULL, NULL, 0, NULL },
466: { "bp", roff_line_ignore, NULL, NULL, 0, NULL },
467: { "BP", roff_unsupp, NULL, NULL, 0, NULL },
468: { "break", roff_unsupp, NULL, NULL, 0, NULL },
469: { "breakchar", roff_line_ignore, NULL, NULL, 0, NULL },
470: { "brnl", roff_line_ignore, NULL, NULL, 0, NULL },
471: { "brp", roff_brp, NULL, NULL, 0, NULL },
472: { "brpnl", roff_line_ignore, NULL, NULL, 0, NULL },
473: { "c2", roff_unsupp, NULL, NULL, 0, NULL },
1.48 schwarze 474: { "cc", roff_cc, NULL, NULL, 0, NULL },
1.67 schwarze 475: { "ce", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 476: { "cf", roff_insec, NULL, NULL, 0, NULL },
477: { "cflags", roff_line_ignore, NULL, NULL, 0, NULL },
478: { "ch", roff_line_ignore, NULL, NULL, 0, NULL },
479: { "char", roff_unsupp, NULL, NULL, 0, NULL },
480: { "chop", roff_unsupp, NULL, NULL, 0, NULL },
481: { "class", roff_line_ignore, NULL, NULL, 0, NULL },
482: { "close", roff_insec, NULL, NULL, 0, NULL },
483: { "CL", roff_unsupp, NULL, NULL, 0, NULL },
484: { "color", roff_line_ignore, NULL, NULL, 0, NULL },
485: { "composite", roff_unsupp, NULL, NULL, 0, NULL },
486: { "continue", roff_unsupp, NULL, NULL, 0, NULL },
487: { "cp", roff_line_ignore, NULL, NULL, 0, NULL },
488: { "cropat", roff_line_ignore, NULL, NULL, 0, NULL },
489: { "cs", roff_line_ignore, NULL, NULL, 0, NULL },
490: { "cu", roff_line_ignore, NULL, NULL, 0, NULL },
491: { "da", roff_unsupp, NULL, NULL, 0, NULL },
492: { "dch", roff_unsupp, NULL, NULL, 0, NULL },
493: { "Dd", roff_Dd, NULL, NULL, 0, NULL },
1.3 schwarze 494: { "de", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.123 schwarze 495: { "de1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
496: { "defcolor", roff_line_ignore, NULL, NULL, 0, NULL },
1.3 schwarze 497: { "dei", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.123 schwarze 498: { "dei1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
499: { "device", roff_unsupp, NULL, NULL, 0, NULL },
500: { "devicem", roff_unsupp, NULL, NULL, 0, NULL },
501: { "di", roff_unsupp, NULL, NULL, 0, NULL },
502: { "do", roff_unsupp, NULL, NULL, 0, NULL },
1.7 schwarze 503: { "ds", roff_ds, NULL, NULL, 0, NULL },
1.123 schwarze 504: { "ds1", roff_ds, NULL, NULL, 0, NULL },
505: { "dwh", roff_unsupp, NULL, NULL, 0, NULL },
506: { "dt", roff_unsupp, NULL, NULL, 0, NULL },
507: { "ec", roff_unsupp, NULL, NULL, 0, NULL },
508: { "ecr", roff_unsupp, NULL, NULL, 0, NULL },
509: { "ecs", roff_unsupp, NULL, NULL, 0, NULL },
1.3 schwarze 510: { "el", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
1.123 schwarze 511: { "em", roff_unsupp, NULL, NULL, 0, NULL },
512: { "EN", roff_EN, NULL, NULL, 0, NULL },
513: { "eo", roff_unsupp, NULL, NULL, 0, NULL },
514: { "EP", roff_unsupp, NULL, NULL, 0, NULL },
515: { "EQ", roff_EQ, NULL, NULL, 0, NULL },
516: { "errprint", roff_line_ignore, NULL, NULL, 0, NULL },
517: { "ev", roff_unsupp, NULL, NULL, 0, NULL },
518: { "evc", roff_unsupp, NULL, NULL, 0, NULL },
519: { "ex", roff_unsupp, NULL, NULL, 0, NULL },
520: { "fallback", roff_line_ignore, NULL, NULL, 0, NULL },
1.58 schwarze 521: { "fam", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 522: { "fc", roff_unsupp, NULL, NULL, 0, NULL },
523: { "fchar", roff_unsupp, NULL, NULL, 0, NULL },
524: { "fcolor", roff_line_ignore, NULL, NULL, 0, NULL },
525: { "fdeferlig", roff_line_ignore, NULL, NULL, 0, NULL },
526: { "feature", roff_line_ignore, NULL, NULL, 0, NULL },
527: { "fkern", roff_line_ignore, NULL, NULL, 0, NULL },
528: { "fl", roff_line_ignore, NULL, NULL, 0, NULL },
529: { "flig", roff_line_ignore, NULL, NULL, 0, NULL },
530: { "fp", roff_line_ignore, NULL, NULL, 0, NULL },
531: { "fps", roff_line_ignore, NULL, NULL, 0, NULL },
532: { "fschar", roff_unsupp, NULL, NULL, 0, NULL },
533: { "fspacewidth", roff_line_ignore, NULL, NULL, 0, NULL },
534: { "fspecial", roff_line_ignore, NULL, NULL, 0, NULL },
535: { "ftr", roff_line_ignore, NULL, NULL, 0, NULL },
536: { "fzoom", roff_line_ignore, NULL, NULL, 0, NULL },
537: { "gcolor", roff_line_ignore, NULL, NULL, 0, NULL },
538: { "hc", roff_line_ignore, NULL, NULL, 0, NULL },
539: { "hcode", roff_line_ignore, NULL, NULL, 0, NULL },
540: { "hidechar", roff_line_ignore, NULL, NULL, 0, NULL },
541: { "hla", roff_line_ignore, NULL, NULL, 0, NULL },
542: { "hlm", roff_line_ignore, NULL, NULL, 0, NULL },
543: { "hpf", roff_line_ignore, NULL, NULL, 0, NULL },
544: { "hpfa", roff_line_ignore, NULL, NULL, 0, NULL },
545: { "hpfcode", roff_line_ignore, NULL, NULL, 0, NULL },
1.59 schwarze 546: { "hw", roff_line_ignore, NULL, NULL, 0, NULL },
1.21 schwarze 547: { "hy", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 548: { "hylang", roff_line_ignore, NULL, NULL, 0, NULL },
549: { "hylen", roff_line_ignore, NULL, NULL, 0, NULL },
550: { "hym", roff_line_ignore, NULL, NULL, 0, NULL },
551: { "hypp", roff_line_ignore, NULL, NULL, 0, NULL },
552: { "hys", roff_line_ignore, NULL, NULL, 0, NULL },
1.3 schwarze 553: { "ie", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
554: { "if", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
555: { "ig", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.123 schwarze 556: { "index", roff_unsupp, NULL, NULL, 0, NULL },
1.51 schwarze 557: { "it", roff_it, NULL, NULL, 0, NULL },
1.123 schwarze 558: { "itc", roff_unsupp, NULL, NULL, 0, NULL },
559: { "IX", roff_line_ignore, NULL, NULL, 0, NULL },
560: { "kern", roff_line_ignore, NULL, NULL, 0, NULL },
561: { "kernafter", roff_line_ignore, NULL, NULL, 0, NULL },
562: { "kernbefore", roff_line_ignore, NULL, NULL, 0, NULL },
563: { "kernpair", roff_line_ignore, NULL, NULL, 0, NULL },
564: { "lc", roff_unsupp, NULL, NULL, 0, NULL },
565: { "lc_ctype", roff_unsupp, NULL, NULL, 0, NULL },
566: { "lds", roff_unsupp, NULL, NULL, 0, NULL },
567: { "length", roff_unsupp, NULL, NULL, 0, NULL },
568: { "letadj", roff_line_ignore, NULL, NULL, 0, NULL },
569: { "lf", roff_insec, NULL, NULL, 0, NULL },
570: { "lg", roff_line_ignore, NULL, NULL, 0, NULL },
571: { "lhang", roff_line_ignore, NULL, NULL, 0, NULL },
572: { "linetabs", roff_unsupp, NULL, NULL, 0, NULL },
573: { "lnr", roff_unsupp, NULL, NULL, 0, NULL },
574: { "lnrf", roff_unsupp, NULL, NULL, 0, NULL },
575: { "lpfx", roff_unsupp, NULL, NULL, 0, NULL },
576: { "ls", roff_line_ignore, NULL, NULL, 0, NULL },
577: { "lsm", roff_unsupp, NULL, NULL, 0, NULL },
578: { "lt", roff_line_ignore, NULL, NULL, 0, NULL },
579: { "mc", roff_line_ignore, NULL, NULL, 0, NULL },
580: { "mediasize", roff_line_ignore, NULL, NULL, 0, NULL },
581: { "minss", roff_line_ignore, NULL, NULL, 0, NULL },
582: { "mk", roff_line_ignore, NULL, NULL, 0, NULL },
583: { "mso", roff_insec, NULL, NULL, 0, NULL },
1.128 schwarze 584: { "na", roff_line_ignore, NULL, NULL, 0, NULL },
1.21 schwarze 585: { "ne", roff_line_ignore, NULL, NULL, 0, NULL },
586: { "nh", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 587: { "nhychar", roff_line_ignore, NULL, NULL, 0, NULL },
588: { "nm", roff_unsupp, NULL, NULL, 0, NULL },
589: { "nn", roff_unsupp, NULL, NULL, 0, NULL },
590: { "nop", roff_unsupp, NULL, NULL, 0, NULL },
1.14 schwarze 591: { "nr", roff_nr, NULL, NULL, 0, NULL },
1.123 schwarze 592: { "nrf", roff_unsupp, NULL, NULL, 0, NULL },
593: { "nroff", roff_line_ignore, NULL, NULL, 0, NULL },
1.31 schwarze 594: { "ns", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 595: { "nx", roff_insec, NULL, NULL, 0, NULL },
596: { "open", roff_insec, NULL, NULL, 0, NULL },
597: { "opena", roff_insec, NULL, NULL, 0, NULL },
598: { "os", roff_line_ignore, NULL, NULL, 0, NULL },
599: { "output", roff_unsupp, NULL, NULL, 0, NULL },
600: { "padj", roff_line_ignore, NULL, NULL, 0, NULL },
601: { "papersize", roff_line_ignore, NULL, NULL, 0, NULL },
602: { "pc", roff_line_ignore, NULL, NULL, 0, NULL },
603: { "pev", roff_line_ignore, NULL, NULL, 0, NULL },
604: { "pi", roff_insec, NULL, NULL, 0, NULL },
605: { "PI", roff_unsupp, NULL, NULL, 0, NULL },
1.101 schwarze 606: { "pl", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 607: { "pm", roff_line_ignore, NULL, NULL, 0, NULL },
608: { "pn", roff_line_ignore, NULL, NULL, 0, NULL },
609: { "pnr", roff_line_ignore, NULL, NULL, 0, NULL },
610: { "po", roff_line_ignore, NULL, NULL, 0, NULL },
1.31 schwarze 611: { "ps", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 612: { "psbb", roff_unsupp, NULL, NULL, 0, NULL },
1.127 schwarze 613: { "pshape", roff_unsupp, NULL, NULL, 0, NULL },
1.123 schwarze 614: { "pso", roff_insec, NULL, NULL, 0, NULL },
615: { "ptr", roff_line_ignore, NULL, NULL, 0, NULL },
616: { "pvs", roff_line_ignore, NULL, NULL, 0, NULL },
617: { "rchar", roff_unsupp, NULL, NULL, 0, NULL },
618: { "rd", roff_line_ignore, NULL, NULL, 0, NULL },
619: { "recursionlimit", roff_line_ignore, NULL, NULL, 0, NULL },
620: { "return", roff_unsupp, NULL, NULL, 0, NULL },
621: { "rfschar", roff_unsupp, NULL, NULL, 0, NULL },
622: { "rhang", roff_line_ignore, NULL, NULL, 0, NULL },
623: { "rj", roff_line_ignore, NULL, NULL, 0, NULL },
1.29 schwarze 624: { "rm", roff_rm, NULL, NULL, 0, NULL },
1.123 schwarze 625: { "rn", roff_unsupp, NULL, NULL, 0, NULL },
626: { "rnn", roff_unsupp, NULL, NULL, 0, NULL },
1.76 schwarze 627: { "rr", roff_rr, NULL, NULL, 0, NULL },
1.123 schwarze 628: { "rs", roff_line_ignore, NULL, NULL, 0, NULL },
629: { "rt", roff_line_ignore, NULL, NULL, 0, NULL },
630: { "schar", roff_unsupp, NULL, NULL, 0, NULL },
631: { "sentchar", roff_line_ignore, NULL, NULL, 0, NULL },
632: { "shc", roff_line_ignore, NULL, NULL, 0, NULL },
633: { "shift", roff_unsupp, NULL, NULL, 0, NULL },
634: { "sizes", roff_line_ignore, NULL, NULL, 0, NULL },
1.14 schwarze 635: { "so", roff_so, NULL, NULL, 0, NULL },
1.123 schwarze 636: { "spacewidth", roff_line_ignore, NULL, NULL, 0, NULL },
637: { "special", roff_line_ignore, NULL, NULL, 0, NULL },
638: { "spreadwarn", roff_line_ignore, NULL, NULL, 0, NULL },
639: { "ss", roff_line_ignore, NULL, NULL, 0, NULL },
640: { "sty", roff_line_ignore, NULL, NULL, 0, NULL },
641: { "substring", roff_unsupp, NULL, NULL, 0, NULL },
642: { "sv", roff_line_ignore, NULL, NULL, 0, NULL },
643: { "sy", roff_insec, NULL, NULL, 0, NULL },
644: { "T&", roff_T_, NULL, NULL, 0, NULL },
1.127 schwarze 645: { "ta", roff_unsupp, NULL, NULL, 0, NULL },
1.123 schwarze 646: { "tc", roff_unsupp, NULL, NULL, 0, NULL },
647: { "TE", roff_TE, NULL, NULL, 0, NULL },
648: { "TH", roff_TH, NULL, NULL, 0, NULL },
1.127 schwarze 649: { "ti", roff_unsupp, NULL, NULL, 0, NULL },
1.123 schwarze 650: { "tkf", roff_line_ignore, NULL, NULL, 0, NULL },
651: { "tl", roff_unsupp, NULL, NULL, 0, NULL },
652: { "tm", roff_line_ignore, NULL, NULL, 0, NULL },
653: { "tm1", roff_line_ignore, NULL, NULL, 0, NULL },
654: { "tmc", roff_line_ignore, NULL, NULL, 0, NULL },
1.42 schwarze 655: { "tr", roff_tr, NULL, NULL, 0, NULL },
1.123 schwarze 656: { "track", roff_line_ignore, NULL, NULL, 0, NULL },
657: { "transchar", roff_line_ignore, NULL, NULL, 0, NULL },
658: { "trf", roff_insec, NULL, NULL, 0, NULL },
659: { "trimat", roff_line_ignore, NULL, NULL, 0, NULL },
660: { "trin", roff_unsupp, NULL, NULL, 0, NULL },
661: { "trnt", roff_unsupp, NULL, NULL, 0, NULL },
662: { "troff", roff_line_ignore, NULL, NULL, 0, NULL },
1.27 schwarze 663: { "TS", roff_TS, NULL, NULL, 0, NULL },
1.123 schwarze 664: { "uf", roff_line_ignore, NULL, NULL, 0, NULL },
665: { "ul", roff_line_ignore, NULL, NULL, 0, NULL },
666: { "unformat", roff_unsupp, NULL, NULL, 0, NULL },
667: { "unwatch", roff_line_ignore, NULL, NULL, 0, NULL },
668: { "unwatchn", roff_line_ignore, NULL, NULL, 0, NULL },
669: { "vpt", roff_line_ignore, NULL, NULL, 0, NULL },
670: { "vs", roff_line_ignore, NULL, NULL, 0, NULL },
671: { "warn", roff_line_ignore, NULL, NULL, 0, NULL },
672: { "warnscale", roff_line_ignore, NULL, NULL, 0, NULL },
673: { "watch", roff_line_ignore, NULL, NULL, 0, NULL },
674: { "watchlength", roff_line_ignore, NULL, NULL, 0, NULL },
675: { "watchn", roff_line_ignore, NULL, NULL, 0, NULL },
676: { "wh", roff_unsupp, NULL, NULL, 0, NULL },
677: { "while", roff_unsupp, NULL, NULL, 0, NULL },
678: { "write", roff_insec, NULL, NULL, 0, NULL },
679: { "writec", roff_insec, NULL, NULL, 0, NULL },
680: { "writem", roff_insec, NULL, NULL, 0, NULL },
681: { "xflag", roff_line_ignore, NULL, NULL, 0, NULL },
1.3 schwarze 682: { ".", roff_cblock, NULL, NULL, 0, NULL },
1.16 schwarze 683: { NULL, roff_userdef, NULL, NULL, 0, NULL },
1.1 schwarze 684: };
685:
1.73 schwarze 686: /* not currently implemented: Ds em Eq LP Me PP pp Or Rd Sf SH */
1.47 schwarze 687: const char *const __mdoc_reserved[] = {
688: "Ac", "Ad", "An", "Ao", "Ap", "Aq", "Ar", "At",
689: "Bc", "Bd", "Bf", "Bk", "Bl", "Bo", "Bq",
690: "Brc", "Bro", "Brq", "Bsx", "Bt", "Bx",
691: "Cd", "Cm", "Db", "Dc", "Dd", "Dl", "Do", "Dq",
1.73 schwarze 692: "Dt", "Dv", "Dx", "D1",
693: "Ec", "Ed", "Ef", "Ek", "El", "Em",
694: "En", "Eo", "Er", "Es", "Ev", "Ex",
1.47 schwarze 695: "Fa", "Fc", "Fd", "Fl", "Fn", "Fo", "Fr", "Ft", "Fx",
1.73 schwarze 696: "Hf", "Ic", "In", "It", "Lb", "Li", "Lk", "Lp",
697: "Ms", "Mt", "Nd", "Nm", "No", "Ns", "Nx",
1.47 schwarze 698: "Oc", "Oo", "Op", "Os", "Ot", "Ox",
1.73 schwarze 699: "Pa", "Pc", "Pf", "Po", "Pp", "Pq",
700: "Qc", "Ql", "Qo", "Qq", "Re", "Rs", "Rv",
701: "Sc", "Sh", "Sm", "So", "Sq",
1.47 schwarze 702: "Ss", "St", "Sx", "Sy",
703: "Ta", "Tn", "Ud", "Ux", "Va", "Vt", "Xc", "Xo", "Xr",
1.73 schwarze 704: "%A", "%B", "%C", "%D", "%I", "%J", "%N", "%O",
1.47 schwarze 705: "%P", "%Q", "%R", "%T", "%U", "%V",
706: NULL
707: };
708:
1.73 schwarze 709: /* not currently implemented: BT DE DS ME MT PT SY TQ YS */
1.47 schwarze 710: const char *const __man_reserved[] = {
1.73 schwarze 711: "AT", "B", "BI", "BR", "DT",
712: "EE", "EN", "EQ", "EX", "HP", "I", "IB", "IP", "IR",
713: "LP", "OP", "P", "PD", "PP",
714: "R", "RB", "RE", "RI", "RS", "SB", "SH", "SM", "SS",
715: "TE", "TH", "TP", "TS", "T&", "UC", "UE", "UR",
1.47 schwarze 716: NULL
717: };
718:
1.37 schwarze 719: /* Array of injected predefined strings. */
720: #define PREDEFS_MAX 38
721: static const struct predef predefs[PREDEFS_MAX] = {
722: #include "predefs.in"
723: };
724:
1.42 schwarze 725: /* See roffhash_find() */
1.3 schwarze 726: #define ROFF_HASH(p) (p[0] - ASCII_LO)
727:
1.51 schwarze 728: static int roffit_lines; /* number of lines to delay */
729: static char *roffit_macro; /* nil-terminated macro line */
730:
1.80 schwarze 731:
1.3 schwarze 732: static void
1.42 schwarze 733: roffhash_init(void)
1.3 schwarze 734: {
735: struct roffmac *n;
736: int buc, i;
737:
1.16 schwarze 738: for (i = 0; i < (int)ROFF_USERDEF; i++) {
1.3 schwarze 739: assert(roffs[i].name[0] >= ASCII_LO);
740: assert(roffs[i].name[0] <= ASCII_HI);
741:
742: buc = ROFF_HASH(roffs[i].name);
743:
744: if (NULL != (n = hash[buc])) {
745: for ( ; n->next; n = n->next)
746: /* Do nothing. */ ;
747: n->next = &roffs[i];
748: } else
749: hash[buc] = &roffs[i];
750: }
751: }
752:
1.1 schwarze 753: /*
754: * Look up a roff token by its name. Returns ROFF_MAX if no macro by
755: * the nil-terminated string name could be found.
756: */
757: static enum rofft
1.42 schwarze 758: roffhash_find(const char *p, size_t s)
1.1 schwarze 759: {
1.3 schwarze 760: int buc;
761: struct roffmac *n;
1.1 schwarze 762:
1.3 schwarze 763: /*
764: * libroff has an extremely simple hashtable, for the time
765: * being, which simply keys on the first character, which must
766: * be printable, then walks a chain. It works well enough until
767: * optimised.
768: */
769:
770: if (p[0] < ASCII_LO || p[0] > ASCII_HI)
771: return(ROFF_MAX);
772:
773: buc = ROFF_HASH(p);
774:
775: if (NULL == (n = hash[buc]))
776: return(ROFF_MAX);
777: for ( ; n; n = n->next)
1.16 schwarze 778: if (0 == strncmp(n->name, p, s) && '\0' == n->name[(int)s])
1.3 schwarze 779: return((enum rofft)(n - roffs));
1.1 schwarze 780:
781: return(ROFF_MAX);
782: }
783:
784: /*
785: * Pop the current node off of the stack of roff instructions currently
786: * pending.
787: */
788: static void
789: roffnode_pop(struct roff *r)
790: {
791: struct roffnode *p;
792:
1.2 schwarze 793: assert(r->last);
1.80 schwarze 794: p = r->last;
1.2 schwarze 795:
796: r->last = r->last->parent;
1.16 schwarze 797: free(p->name);
798: free(p->end);
1.1 schwarze 799: free(p);
800: }
801:
802: /*
803: * Push a roff node onto the instruction stack. This must later be
804: * removed with roffnode_pop().
805: */
1.11 schwarze 806: static void
1.16 schwarze 807: roffnode_push(struct roff *r, enum rofft tok, const char *name,
808: int line, int col)
1.1 schwarze 809: {
810: struct roffnode *p;
811:
1.11 schwarze 812: p = mandoc_calloc(1, sizeof(struct roffnode));
1.1 schwarze 813: p->tok = tok;
1.16 schwarze 814: if (name)
815: p->name = mandoc_strdup(name);
1.1 schwarze 816: p->parent = r->last;
817: p->line = line;
818: p->col = col;
1.71 schwarze 819: p->rule = p->parent ? p->parent->rule : 0;
1.1 schwarze 820:
821: r->last = p;
822: }
823:
824: static void
825: roff_free1(struct roff *r)
826: {
1.49 schwarze 827: struct tbl_node *tbl;
1.32 schwarze 828: struct eqn_node *e;
1.42 schwarze 829: int i;
1.27 schwarze 830:
1.49 schwarze 831: while (NULL != (tbl = r->first_tbl)) {
832: r->first_tbl = tbl->next;
833: tbl_free(tbl);
1.27 schwarze 834: }
835: r->first_tbl = r->last_tbl = r->tbl = NULL;
1.1 schwarze 836:
1.32 schwarze 837: while (NULL != (e = r->first_eqn)) {
838: r->first_eqn = e->next;
839: eqn_free(e);
840: }
841: r->first_eqn = r->last_eqn = r->eqn = NULL;
842:
1.1 schwarze 843: while (r->last)
844: roffnode_pop(r);
1.27 schwarze 845:
1.96 schwarze 846: free (r->rstack);
847: r->rstack = NULL;
848: r->rstacksz = 0;
849: r->rstackpos = -1;
850:
851: roff_freereg(r->regtab);
852: r->regtab = NULL;
853:
1.42 schwarze 854: roff_freestr(r->strtab);
855: roff_freestr(r->xmbtab);
856: r->strtab = r->xmbtab = NULL;
857:
858: if (r->xtab)
859: for (i = 0; i < 128; i++)
860: free(r->xtab[i].p);
861: free(r->xtab);
862: r->xtab = NULL;
1.1 schwarze 863: }
864:
865: void
866: roff_reset(struct roff *r)
867: {
868:
869: roff_free1(r);
1.99 schwarze 870: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.48 schwarze 871: r->control = 0;
1.1 schwarze 872: }
873:
874: void
875: roff_free(struct roff *r)
876: {
877:
878: roff_free1(r);
879: free(r);
880: }
881:
882: struct roff *
1.109 schwarze 883: roff_alloc(struct mparse *parse, const struct mchars *mchars, int options)
1.1 schwarze 884: {
885: struct roff *r;
886:
1.11 schwarze 887: r = mandoc_calloc(1, sizeof(struct roff));
1.35 schwarze 888: r->parse = parse;
1.109 schwarze 889: r->mchars = mchars;
1.72 schwarze 890: r->options = options;
1.99 schwarze 891: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.2 schwarze 892: r->rstackpos = -1;
1.80 schwarze 893:
1.42 schwarze 894: roffhash_init();
1.37 schwarze 895:
1.1 schwarze 896: return(r);
897: }
898:
1.8 schwarze 899: /*
1.79 schwarze 900: * In the current line, expand escape sequences that tend to get
901: * used in numerical expressions and conditional requests.
902: * Also check the syntax of the remaining escape sequences.
1.8 schwarze 903: */
1.45 schwarze 904: static enum rofferr
1.110 schwarze 905: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.8 schwarze 906: {
1.81 schwarze 907: char ubuf[24]; /* buffer to print the number */
1.78 schwarze 908: const char *start; /* start of the string to process */
1.82 schwarze 909: char *stesc; /* start of an escape sequence ('\\') */
1.23 schwarze 910: const char *stnam; /* start of the name, after "[(*" */
911: const char *cp; /* end of the name, e.g. before ']' */
912: const char *res; /* the string to be substituted */
1.110 schwarze 913: char *nbuf; /* new buffer to copy buf->buf to */
1.53 schwarze 914: size_t maxl; /* expected length of the escape name */
915: size_t naml; /* actual length of the escape name */
1.109 schwarze 916: enum mandoc_esc esc; /* type of the escape sequence */
917: int inaml; /* length returned from mandoc_escape() */
1.53 schwarze 918: int expand_count; /* to avoid infinite loops */
1.79 schwarze 919: int npos; /* position in numeric expression */
1.91 schwarze 920: int arg_complete; /* argument not interrupted by eol */
1.79 schwarze 921: char term; /* character terminating the escape */
1.8 schwarze 922:
1.43 schwarze 923: expand_count = 0;
1.110 schwarze 924: start = buf->buf + pos;
1.78 schwarze 925: stesc = strchr(start, '\0') - 1;
926: while (stesc-- > start) {
1.43 schwarze 927:
1.78 schwarze 928: /* Search backwards for the next backslash. */
929:
1.110 schwarze 930: if (*stesc != '\\')
1.78 schwarze 931: continue;
932:
933: /* If it is escaped, skip it. */
934:
935: for (cp = stesc - 1; cp >= start; cp--)
1.110 schwarze 936: if (*cp != '\\')
1.78 schwarze 937: break;
938:
1.110 schwarze 939: if ((stesc - cp) % 2 == 0) {
1.82 schwarze 940: stesc = (char *)cp;
1.78 schwarze 941: continue;
942: }
1.23 schwarze 943:
1.79 schwarze 944: /* Decide whether to expand or to check only. */
1.23 schwarze 945:
1.79 schwarze 946: term = '\0';
1.78 schwarze 947: cp = stesc + 1;
1.53 schwarze 948: switch (*cp) {
1.80 schwarze 949: case '*':
1.53 schwarze 950: res = NULL;
951: break;
1.80 schwarze 952: case 'B':
1.79 schwarze 953: /* FALLTHROUGH */
1.80 schwarze 954: case 'w':
1.79 schwarze 955: term = cp[1];
956: /* FALLTHROUGH */
1.80 schwarze 957: case 'n':
1.53 schwarze 958: res = ubuf;
959: break;
960: default:
1.109 schwarze 961: esc = mandoc_escape(&cp, &stnam, &inaml);
962: if (esc == ESCAPE_ERROR ||
963: (esc == ESCAPE_SPECIAL &&
964: mchars_spec2cp(r->mchars, stnam, inaml) < 0))
1.92 schwarze 965: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.110 schwarze 966: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 967: "%.*s", (int)(cp - stesc), stesc);
1.78 schwarze 968: continue;
1.42 schwarze 969: }
970:
1.78 schwarze 971: if (EXPAND_LIMIT < ++expand_count) {
972: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.110 schwarze 973: ln, (int)(stesc - buf->buf), NULL);
1.78 schwarze 974: return(ROFF_IGN);
975: }
1.23 schwarze 976:
977: /*
978: * The third character decides the length
1.53 schwarze 979: * of the name of the string or register.
1.23 schwarze 980: * Save a pointer to the name.
981: */
982:
1.110 schwarze 983: if (term == '\0') {
1.79 schwarze 984: switch (*++cp) {
1.80 schwarze 985: case '\0':
1.79 schwarze 986: maxl = 0;
987: break;
1.80 schwarze 988: case '(':
1.79 schwarze 989: cp++;
990: maxl = 2;
991: break;
1.80 schwarze 992: case '[':
1.79 schwarze 993: cp++;
994: term = ']';
995: maxl = 0;
996: break;
997: default:
998: maxl = 1;
999: break;
1000: }
1001: } else {
1002: cp += 2;
1.8 schwarze 1003: maxl = 0;
1004: }
1.23 schwarze 1005: stnam = cp;
1.8 schwarze 1006:
1.23 schwarze 1007: /* Advance to the end of the name. */
1.8 schwarze 1008:
1.125 schwarze 1009: naml = 0;
1.91 schwarze 1010: arg_complete = 1;
1.125 schwarze 1011: while (maxl == 0 || naml < maxl) {
1.110 schwarze 1012: if (*cp == '\0') {
1.92 schwarze 1013: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 1014: ln, (int)(stesc - buf->buf), stesc);
1.91 schwarze 1015: arg_complete = 0;
1.79 schwarze 1016: break;
1.42 schwarze 1017: }
1.110 schwarze 1018: if (maxl == 0 && *cp == term) {
1.79 schwarze 1019: cp++;
1.125 schwarze 1020: break;
1021: }
1022: if (*cp++ != '\\' || stesc[1] != 'w') {
1023: naml++;
1024: continue;
1025: }
1026: switch (mandoc_escape(&cp, NULL, NULL)) {
1027: case ESCAPE_SPECIAL:
1028: /* FALLTHROUGH */
1029: case ESCAPE_UNICODE:
1030: /* FALLTHROUGH */
1031: case ESCAPE_NUMBERED:
1032: /* FALLTHROUGH */
1033: case ESCAPE_OVERSTRIKE:
1034: naml++;
1035: break;
1036: default:
1.8 schwarze 1037: break;
1.79 schwarze 1038: }
1.8 schwarze 1039: }
1040:
1.23 schwarze 1041: /*
1042: * Retrieve the replacement string; if it is
1043: * undefined, resume searching for escapes.
1044: */
1045:
1.79 schwarze 1046: switch (stesc[1]) {
1.80 schwarze 1047: case '*':
1.91 schwarze 1048: if (arg_complete)
1049: res = roff_getstrn(r, stnam, naml);
1.79 schwarze 1050: break;
1.80 schwarze 1051: case 'B':
1.79 schwarze 1052: npos = 0;
1.91 schwarze 1053: ubuf[0] = arg_complete &&
1.133 schwarze 1054: roff_evalnum(r, ln, stnam, &npos,
1055: NULL, ROFFNUM_SCALE) &&
1.91 schwarze 1056: stnam + npos + 1 == cp ? '1' : '0';
1.79 schwarze 1057: ubuf[1] = '\0';
1058: break;
1.80 schwarze 1059: case 'n':
1.91 schwarze 1060: if (arg_complete)
1061: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1062: roff_getregn(r, stnam, naml));
1063: else
1064: ubuf[0] = '\0';
1.79 schwarze 1065: break;
1.80 schwarze 1066: case 'w':
1.91 schwarze 1067: /* use even incomplete args */
1.81 schwarze 1068: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.79 schwarze 1069: 24 * (int)naml);
1070: break;
1071: }
1.8 schwarze 1072:
1.110 schwarze 1073: if (res == NULL) {
1.92 schwarze 1074: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1075: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1076: "%.*s", (int)naml, stnam);
1.37 schwarze 1077: res = "";
1.118 schwarze 1078: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1079: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1080: ln, (int)(stesc - buf->buf), NULL);
1081: return(ROFF_IGN);
1.8 schwarze 1082: }
1083:
1.23 schwarze 1084: /* Replace the escape sequence by the string. */
1085:
1.82 schwarze 1086: *stesc = '\0';
1.110 schwarze 1087: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1088: buf->buf, res, cp) + 1;
1.8 schwarze 1089:
1.78 schwarze 1090: /* Prepare for the next replacement. */
1.8 schwarze 1091:
1.78 schwarze 1092: start = nbuf + pos;
1.110 schwarze 1093: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1094: free(buf->buf);
1095: buf->buf = nbuf;
1.42 schwarze 1096: }
1.45 schwarze 1097: return(ROFF_CONT);
1.42 schwarze 1098: }
1099:
1100: /*
1.51 schwarze 1101: * Process text streams:
1102: * Convert all breakable hyphens into ASCII_HYPH.
1103: * Decrement and spring input line trap.
1.42 schwarze 1104: */
1105: static enum rofferr
1.110 schwarze 1106: roff_parsetext(struct buf *buf, int pos, int *offs)
1.42 schwarze 1107: {
1108: size_t sz;
1109: const char *start;
1.51 schwarze 1110: char *p;
1111: int isz;
1.42 schwarze 1112: enum mandoc_esc esc;
1113:
1.110 schwarze 1114: start = p = buf->buf + pos;
1.42 schwarze 1115:
1.110 schwarze 1116: while (*p != '\0') {
1.42 schwarze 1117: sz = strcspn(p, "-\\");
1118: p += sz;
1119:
1.110 schwarze 1120: if (*p == '\0')
1.42 schwarze 1121: break;
1122:
1.110 schwarze 1123: if (*p == '\\') {
1.42 schwarze 1124: /* Skip over escapes. */
1125: p++;
1.62 schwarze 1126: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.110 schwarze 1127: if (esc == ESCAPE_ERROR)
1.42 schwarze 1128: break;
1129: continue;
1130: } else if (p == start) {
1131: p++;
1132: continue;
1133: }
1134:
1.44 schwarze 1135: if (isalpha((unsigned char)p[-1]) &&
1136: isalpha((unsigned char)p[1]))
1.42 schwarze 1137: *p = ASCII_HYPH;
1138: p++;
1.8 schwarze 1139: }
1140:
1.51 schwarze 1141: /* Spring the input line trap. */
1.110 schwarze 1142: if (roffit_lines == 1) {
1143: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1144: free(buf->buf);
1145: buf->buf = p;
1146: buf->sz = isz + 1;
1.51 schwarze 1147: *offs = 0;
1148: free(roffit_macro);
1149: roffit_lines = 0;
1150: return(ROFF_REPARSE);
1.110 schwarze 1151: } else if (roffit_lines > 1)
1.51 schwarze 1152: --roffit_lines;
1.42 schwarze 1153: return(ROFF_CONT);
1.8 schwarze 1154: }
1155:
1.1 schwarze 1156: enum rofferr
1.110 schwarze 1157: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.1 schwarze 1158: {
1159: enum rofft t;
1.27 schwarze 1160: enum rofferr e;
1.110 schwarze 1161: int pos; /* parse point */
1.115 schwarze 1162: int spos; /* saved parse point for messages */
1.110 schwarze 1163: int ppos; /* original offset in buf->buf */
1164: int ctl; /* macro line (boolean) */
1165:
1166: ppos = pos = *offs;
1.1 schwarze 1167:
1.102 schwarze 1168: /* Handle in-line equation delimiters. */
1169:
1.108 schwarze 1170: if (r->tbl == NULL &&
1171: r->last_eqn != NULL && r->last_eqn->delim &&
1.102 schwarze 1172: (r->eqn == NULL || r->eqn_inline)) {
1.110 schwarze 1173: e = roff_eqndelim(r, buf, pos);
1.102 schwarze 1174: if (e == ROFF_REPARSE)
1175: return(e);
1176: assert(e == ROFF_CONT);
1177: }
1178:
1179: /* Expand some escape sequences. */
1.8 schwarze 1180:
1.110 schwarze 1181: e = roff_res(r, buf, ln, pos);
1182: if (e == ROFF_IGN)
1.45 schwarze 1183: return(e);
1.110 schwarze 1184: assert(e == ROFF_CONT);
1.8 schwarze 1185:
1.110 schwarze 1186: ctl = roff_getcontrol(r, buf->buf, &pos);
1.35 schwarze 1187:
1.8 schwarze 1188: /*
1.2 schwarze 1189: * First, if a scope is open and we're not a macro, pass the
1.124 schwarze 1190: * text through the macro's filter.
1191: * Equations process all content themselves.
1192: * Tables process almost all content themselves, but we want
1193: * to warn about macros before passing it there.
1.2 schwarze 1194: */
1195:
1.124 schwarze 1196: if (r->last != NULL && ! ctl) {
1.2 schwarze 1197: t = r->last->tok;
1198: assert(roffs[t].text);
1.110 schwarze 1199: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1200: assert(e == ROFF_IGN || e == ROFF_CONT);
1201: if (e != ROFF_CONT)
1.32 schwarze 1202: return(e);
1.54 schwarze 1203: }
1.124 schwarze 1204: if (r->eqn != NULL)
1.110 schwarze 1205: return(eqn_read(&r->eqn, ln, buf->buf, ppos, offs));
1.124 schwarze 1206: if (r->tbl != NULL && ( ! ctl || buf->buf[pos] == '\0'))
1.131 schwarze 1207: return(tbl_read(r->tbl, ln, buf->buf, ppos));
1.124 schwarze 1208: if ( ! ctl)
1.110 schwarze 1209: return(roff_parsetext(buf, pos, offs));
1.100 schwarze 1210:
1211: /* Skip empty request lines. */
1212:
1.110 schwarze 1213: if (buf->buf[pos] == '"') {
1.100 schwarze 1214: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1215: ln, pos, NULL);
1216: return(ROFF_IGN);
1.110 schwarze 1217: } else if (buf->buf[pos] == '\0')
1.100 schwarze 1218: return(ROFF_IGN);
1.2 schwarze 1219:
1220: /*
1221: * If a scope is open, go to the child handler for that macro,
1222: * as it may want to preprocess before doing anything with it.
1.32 schwarze 1223: * Don't do so if an equation is open.
1.2 schwarze 1224: */
1225:
1226: if (r->last) {
1.1 schwarze 1227: t = r->last->tok;
1228: assert(roffs[t].sub);
1.110 schwarze 1229: return((*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs));
1.2 schwarze 1230: }
1231:
1.115 schwarze 1232: /* No scope is open. This is a new request or macro. */
1233:
1234: spos = pos;
1235: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1236:
1237: /* Tables ignore most macros. */
1238:
1239: if (r->tbl != NULL && (t == ROFF_MAX || t == ROFF_TS)) {
1240: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1241: ln, pos, buf->buf + spos);
1.129 schwarze 1242: if (t == ROFF_TS)
1243: return(ROFF_IGN);
1244: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1245: pos++;
1246: while (buf->buf[pos] != '\0' && buf->buf[pos] == ' ')
1247: pos++;
1248: return(tbl_read(r->tbl, ln, buf->buf, pos));
1.115 schwarze 1249: }
1250:
1.2 schwarze 1251: /*
1.115 schwarze 1252: * This is neither a roff request nor a user-defined macro.
1253: * Let the standard macro set parsers handle it.
1.2 schwarze 1254: */
1255:
1.115 schwarze 1256: if (t == ROFF_MAX)
1.1 schwarze 1257: return(ROFF_CONT);
1.115 schwarze 1258:
1259: /* Execute a roff request or a user defined macro. */
1.1 schwarze 1260:
1.2 schwarze 1261: assert(roffs[t].proc);
1.110 schwarze 1262: return((*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs));
1.2 schwarze 1263: }
1264:
1.27 schwarze 1265: void
1.2 schwarze 1266: roff_endparse(struct roff *r)
1267: {
1.1 schwarze 1268:
1.27 schwarze 1269: if (r->last)
1.94 schwarze 1270: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1271: r->last->line, r->last->col,
1272: roffs[r->last->tok].name);
1.27 schwarze 1273:
1.32 schwarze 1274: if (r->eqn) {
1.94 schwarze 1275: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1276: r->eqn->eqn.ln, r->eqn->eqn.pos, "EQ");
1.41 schwarze 1277: eqn_end(&r->eqn);
1.32 schwarze 1278: }
1279:
1.27 schwarze 1280: if (r->tbl) {
1.94 schwarze 1281: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1282: r->tbl->line, r->tbl->pos, "TS");
1.41 schwarze 1283: tbl_end(&r->tbl);
1.27 schwarze 1284: }
1.1 schwarze 1285: }
1286:
1287: /*
1288: * Parse a roff node's type from the input buffer. This must be in the
1289: * form of ".foo xxx" in the usual way.
1290: */
1291: static enum rofft
1.87 schwarze 1292: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.1 schwarze 1293: {
1.87 schwarze 1294: char *cp;
1.16 schwarze 1295: const char *mac;
1296: size_t maclen;
1.1 schwarze 1297: enum rofft t;
1298:
1.87 schwarze 1299: cp = buf + *pos;
1300:
1301: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.1 schwarze 1302: return(ROFF_MAX);
1303:
1.87 schwarze 1304: mac = cp;
1305: maclen = roff_getname(r, &cp, ln, ppos);
1.1 schwarze 1306:
1.16 schwarze 1307: t = (r->current_string = roff_getstrn(r, mac, maclen))
1.42 schwarze 1308: ? ROFF_USERDEF : roffhash_find(mac, maclen);
1.1 schwarze 1309:
1.87 schwarze 1310: if (ROFF_MAX != t)
1311: *pos = cp - buf;
1.1 schwarze 1312:
1313: return(t);
1314: }
1315:
1316: static enum rofferr
1.2 schwarze 1317: roff_cblock(ROFF_ARGS)
1.1 schwarze 1318: {
1319:
1.2 schwarze 1320: /*
1321: * A block-close `..' should only be invoked as a child of an
1322: * ignore macro, otherwise raise a warning and just ignore it.
1323: */
1324:
1.110 schwarze 1325: if (r->last == NULL) {
1.94 schwarze 1326: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1327: ln, ppos, "..");
1.2 schwarze 1328: return(ROFF_IGN);
1329: }
1.1 schwarze 1330:
1.2 schwarze 1331: switch (r->last->tok) {
1.80 schwarze 1332: case ROFF_am:
1.93 schwarze 1333: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.2 schwarze 1334: /* FALLTHROUGH */
1.80 schwarze 1335: case ROFF_ami:
1.2 schwarze 1336: /* FALLTHROUGH */
1.80 schwarze 1337: case ROFF_de:
1.23 schwarze 1338: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.2 schwarze 1339: /* FALLTHROUGH */
1.80 schwarze 1340: case ROFF_dei:
1.2 schwarze 1341: /* FALLTHROUGH */
1.80 schwarze 1342: case ROFF_ig:
1.2 schwarze 1343: break;
1344: default:
1.94 schwarze 1345: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1346: ln, ppos, "..");
1.1 schwarze 1347: return(ROFF_IGN);
1.2 schwarze 1348: }
1349:
1.110 schwarze 1350: if (buf->buf[pos] != '\0')
1.90 schwarze 1351: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 1352: ".. %s", buf->buf + pos);
1.2 schwarze 1353:
1354: roffnode_pop(r);
1355: roffnode_cleanscope(r);
1356: return(ROFF_IGN);
1357:
1358: }
1.1 schwarze 1359:
1.2 schwarze 1360: static void
1361: roffnode_cleanscope(struct roff *r)
1362: {
1.1 schwarze 1363:
1.2 schwarze 1364: while (r->last) {
1.46 schwarze 1365: if (--r->last->endspan != 0)
1.2 schwarze 1366: break;
1367: roffnode_pop(r);
1368: }
1369: }
1.1 schwarze 1370:
1.68 schwarze 1371: static void
1372: roff_ccond(struct roff *r, int ln, int ppos)
1.2 schwarze 1373: {
1.1 schwarze 1374:
1.2 schwarze 1375: if (NULL == r->last) {
1.94 schwarze 1376: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1377: ln, ppos, "\\}");
1.68 schwarze 1378: return;
1.2 schwarze 1379: }
1.1 schwarze 1380:
1.2 schwarze 1381: switch (r->last->tok) {
1.80 schwarze 1382: case ROFF_el:
1.2 schwarze 1383: /* FALLTHROUGH */
1.80 schwarze 1384: case ROFF_ie:
1.2 schwarze 1385: /* FALLTHROUGH */
1.80 schwarze 1386: case ROFF_if:
1.2 schwarze 1387: break;
1388: default:
1.94 schwarze 1389: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1390: ln, ppos, "\\}");
1.68 schwarze 1391: return;
1.2 schwarze 1392: }
1.1 schwarze 1393:
1.2 schwarze 1394: if (r->last->endspan > -1) {
1.94 schwarze 1395: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1396: ln, ppos, "\\}");
1.68 schwarze 1397: return;
1.2 schwarze 1398: }
1399:
1400: roffnode_pop(r);
1401: roffnode_cleanscope(r);
1.68 schwarze 1402: return;
1.1 schwarze 1403: }
1404:
1405: static enum rofferr
1.2 schwarze 1406: roff_block(ROFF_ARGS)
1.1 schwarze 1407: {
1.93 schwarze 1408: const char *name;
1409: char *iname, *cp;
1.86 schwarze 1410: size_t namesz;
1.16 schwarze 1411:
1.93 schwarze 1412: /* Ignore groff compatibility mode for now. */
1.2 schwarze 1413:
1.110 schwarze 1414: if (tok == ROFF_de1)
1.93 schwarze 1415: tok = ROFF_de;
1.123 schwarze 1416: else if (tok == ROFF_dei1)
1417: tok = ROFF_dei;
1.110 schwarze 1418: else if (tok == ROFF_am1)
1.93 schwarze 1419: tok = ROFF_am;
1.123 schwarze 1420: else if (tok == ROFF_ami1)
1421: tok = ROFF_ami;
1.93 schwarze 1422:
1423: /* Parse the macro name argument. */
1424:
1.110 schwarze 1425: cp = buf->buf + pos;
1426: if (tok == ROFF_ig) {
1.93 schwarze 1427: iname = NULL;
1428: namesz = 0;
1429: } else {
1430: iname = cp;
1431: namesz = roff_getname(r, &cp, ln, ppos);
1432: iname[namesz] = '\0';
1433: }
1.22 schwarze 1434:
1.93 schwarze 1435: /* Resolve the macro name argument if it is indirect. */
1.22 schwarze 1436:
1.110 schwarze 1437: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1438: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.93 schwarze 1439: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1440: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1441: "%.*s", (int)namesz, iname);
1442: namesz = 0;
1443: } else
1444: namesz = strlen(name);
1445: } else
1446: name = iname;
1.22 schwarze 1447:
1.110 schwarze 1448: if (namesz == 0 && tok != ROFF_ig) {
1.93 schwarze 1449: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1450: ln, ppos, roffs[tok].name);
1451: return(ROFF_IGN);
1452: }
1.2 schwarze 1453:
1.16 schwarze 1454: roffnode_push(r, tok, name, ln, ppos);
1455:
1456: /*
1457: * At the beginning of a `de' macro, clear the existing string
1458: * with the same name, if there is one. New content will be
1.66 schwarze 1459: * appended from roff_block_text() in multiline mode.
1.16 schwarze 1460: */
1.22 schwarze 1461:
1.110 schwarze 1462: if (tok == ROFF_de || tok == ROFF_dei)
1.86 schwarze 1463: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.2 schwarze 1464:
1.110 schwarze 1465: if (*cp == '\0')
1.2 schwarze 1466: return(ROFF_IGN);
1.1 schwarze 1467:
1.93 schwarze 1468: /* Get the custom end marker. */
1.22 schwarze 1469:
1.93 schwarze 1470: iname = cp;
1.86 schwarze 1471: namesz = roff_getname(r, &cp, ln, ppos);
1.93 schwarze 1472:
1473: /* Resolve the end marker if it is indirect. */
1474:
1.110 schwarze 1475: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1476: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.93 schwarze 1477: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1478: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1479: "%.*s", (int)namesz, iname);
1480: namesz = 0;
1481: } else
1482: namesz = strlen(name);
1483: } else
1484: name = iname;
1485:
1.86 schwarze 1486: if (namesz)
1487: r->last->end = mandoc_strndup(name, namesz);
1.2 schwarze 1488:
1.110 schwarze 1489: if (*cp != '\0')
1.90 schwarze 1490: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1491: ln, pos, ".%s ... %s", roffs[tok].name, cp);
1.1 schwarze 1492:
1493: return(ROFF_IGN);
1494: }
1495:
1496: static enum rofferr
1.2 schwarze 1497: roff_block_sub(ROFF_ARGS)
1.1 schwarze 1498: {
1.2 schwarze 1499: enum rofft t;
1500: int i, j;
1501:
1502: /*
1503: * First check whether a custom macro exists at this level. If
1504: * it does, then check against it. This is some of groff's
1505: * stranger behaviours. If we encountered a custom end-scope
1506: * tag and that tag also happens to be a "real" macro, then we
1507: * need to try interpreting it again as a real macro. If it's
1508: * not, then return ignore. Else continue.
1509: */
1510:
1511: if (r->last->end) {
1.35 schwarze 1512: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.110 schwarze 1513: if (buf->buf[i] != r->last->end[j])
1.2 schwarze 1514: break;
1.1 schwarze 1515:
1.110 schwarze 1516: if (r->last->end[j] == '\0' &&
1517: (buf->buf[i] == '\0' ||
1518: buf->buf[i] == ' ' ||
1519: buf->buf[i] == '\t')) {
1.2 schwarze 1520: roffnode_pop(r);
1521: roffnode_cleanscope(r);
1.1 schwarze 1522:
1.110 schwarze 1523: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.35 schwarze 1524: i++;
1525:
1526: pos = i;
1.110 schwarze 1527: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1528: ROFF_MAX)
1.2 schwarze 1529: return(ROFF_RERUN);
1530: return(ROFF_IGN);
1531: }
1.1 schwarze 1532: }
1533:
1.2 schwarze 1534: /*
1535: * If we have no custom end-query or lookup failed, then try
1536: * pulling it out of the hashtable.
1537: */
1.1 schwarze 1538:
1.110 schwarze 1539: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.1 schwarze 1540:
1.110 schwarze 1541: if (t != ROFF_cblock) {
1542: if (tok != ROFF_ig)
1543: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.1 schwarze 1544: return(ROFF_IGN);
1.16 schwarze 1545: }
1.1 schwarze 1546:
1.2 schwarze 1547: assert(roffs[t].proc);
1.110 schwarze 1548: return((*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs));
1.2 schwarze 1549: }
1550:
1551: static enum rofferr
1552: roff_block_text(ROFF_ARGS)
1553: {
1554:
1.110 schwarze 1555: if (tok != ROFF_ig)
1556: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.16 schwarze 1557:
1.2 schwarze 1558: return(ROFF_IGN);
1559: }
1560:
1561: static enum rofferr
1562: roff_cond_sub(ROFF_ARGS)
1563: {
1564: enum rofft t;
1.37 schwarze 1565: char *ep;
1.71 schwarze 1566: int rr;
1.2 schwarze 1567:
1568: rr = r->last->rule;
1.37 schwarze 1569: roffnode_cleanscope(r);
1.110 schwarze 1570: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.2 schwarze 1571:
1.37 schwarze 1572: /*
1.50 schwarze 1573: * Fully handle known macros when they are structurally
1574: * required or when the conditional evaluated to true.
1.5 schwarze 1575: */
1576:
1.110 schwarze 1577: if ((t != ROFF_MAX) &&
1578: (rr || roffs[t].flags & ROFFMAC_STRUCT)) {
1.50 schwarze 1579: assert(roffs[t].proc);
1.110 schwarze 1580: return((*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs));
1.50 schwarze 1581: }
1.39 schwarze 1582:
1.69 schwarze 1583: /*
1584: * If `\}' occurs on a macro line without a preceding macro,
1585: * drop the line completely.
1586: */
1587:
1.110 schwarze 1588: ep = buf->buf + pos;
1589: if (ep[0] == '\\' && ep[1] == '}')
1.71 schwarze 1590: rr = 0;
1.69 schwarze 1591:
1.50 schwarze 1592: /* Always check for the closing delimiter `\}'. */
1.39 schwarze 1593:
1.110 schwarze 1594: while ((ep = strchr(ep, '\\')) != NULL) {
1595: if (*(++ep) == '}') {
1.70 schwarze 1596: *ep = '&';
1.110 schwarze 1597: roff_ccond(r, ln, ep - buf->buf - 1);
1.70 schwarze 1598: }
1.119 schwarze 1599: if (*ep != '\0')
1600: ++ep;
1.50 schwarze 1601: }
1.71 schwarze 1602: return(rr ? ROFF_CONT : ROFF_IGN);
1.2 schwarze 1603: }
1604:
1605: static enum rofferr
1606: roff_cond_text(ROFF_ARGS)
1607: {
1.37 schwarze 1608: char *ep;
1.71 schwarze 1609: int rr;
1.2 schwarze 1610:
1611: rr = r->last->rule;
1.37 schwarze 1612: roffnode_cleanscope(r);
1.1 schwarze 1613:
1.110 schwarze 1614: ep = buf->buf + pos;
1615: while ((ep = strchr(ep, '\\')) != NULL) {
1616: if (*(++ep) == '}') {
1.70 schwarze 1617: *ep = '&';
1.110 schwarze 1618: roff_ccond(r, ln, ep - buf->buf - 1);
1.70 schwarze 1619: }
1.119 schwarze 1620: if (*ep != '\0')
1621: ++ep;
1.2 schwarze 1622: }
1.71 schwarze 1623: return(rr ? ROFF_CONT : ROFF_IGN);
1.2 schwarze 1624: }
1625:
1.77 schwarze 1626: /*
1627: * Parse a single signed integer number. Stop at the first non-digit.
1628: * If there is at least one digit, return success and advance the
1629: * parse point, else return failure and let the parse point unchanged.
1630: * Ignore overflows, treat them just like the C language.
1631: */
1.56 schwarze 1632: static int
1.133 schwarze 1633: roff_getnum(const char *v, int *pos, int *res, int flags)
1.56 schwarze 1634: {
1.133 schwarze 1635: int myres, scaled, n, p;
1.79 schwarze 1636:
1637: if (NULL == res)
1638: res = &myres;
1.56 schwarze 1639:
1640: p = *pos;
1641: n = v[p] == '-';
1.133 schwarze 1642: if (n || v[p] == '+')
1.56 schwarze 1643: p++;
1644:
1.133 schwarze 1645: if (flags & ROFFNUM_WHITE)
1646: while (isspace((unsigned char)v[p]))
1647: p++;
1648:
1.56 schwarze 1649: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.77 schwarze 1650: *res = 10 * *res + v[p] - '0';
1.56 schwarze 1651: if (p == *pos + n)
1652: return 0;
1653:
1654: if (n)
1655: *res = -*res;
1656:
1.126 schwarze 1657: /* Each number may be followed by one optional scaling unit. */
1658:
1659: switch (v[p]) {
1660: case 'f':
1.133 schwarze 1661: scaled = *res * 65536;
1.126 schwarze 1662: break;
1663: case 'i':
1.133 schwarze 1664: scaled = *res * 240;
1.126 schwarze 1665: break;
1666: case 'c':
1.133 schwarze 1667: scaled = *res * 240 / 2.54;
1.126 schwarze 1668: break;
1669: case 'v':
1670: /* FALLTROUGH */
1671: case 'P':
1.133 schwarze 1672: scaled = *res * 40;
1.126 schwarze 1673: break;
1674: case 'm':
1675: /* FALLTROUGH */
1676: case 'n':
1.133 schwarze 1677: scaled = *res * 24;
1.126 schwarze 1678: break;
1679: case 'p':
1.133 schwarze 1680: scaled = *res * 10 / 3;
1.126 schwarze 1681: break;
1682: case 'u':
1.133 schwarze 1683: scaled = *res;
1.126 schwarze 1684: break;
1685: case 'M':
1.133 schwarze 1686: scaled = *res * 6 / 25;
1.126 schwarze 1687: break;
1688: default:
1.133 schwarze 1689: scaled = *res;
1.126 schwarze 1690: p--;
1691: break;
1692: }
1.133 schwarze 1693: if (flags & ROFFNUM_SCALE)
1694: *res = scaled;
1.126 schwarze 1695:
1696: *pos = p + 1;
1697: return(1);
1.56 schwarze 1698: }
1699:
1.71 schwarze 1700: /*
1701: * Evaluate a string comparison condition.
1702: * The first character is the delimiter.
1703: * Succeed if the string up to its second occurrence
1704: * matches the string up to its third occurence.
1705: * Advance the cursor after the third occurrence
1706: * or lacking that, to the end of the line.
1707: */
1708: static int
1709: roff_evalstrcond(const char *v, int *pos)
1710: {
1711: const char *s1, *s2, *s3;
1712: int match;
1713:
1714: match = 0;
1715: s1 = v + *pos; /* initial delimiter */
1716: s2 = s1 + 1; /* for scanning the first string */
1717: s3 = strchr(s2, *s1); /* for scanning the second string */
1718:
1719: if (NULL == s3) /* found no middle delimiter */
1720: goto out;
1721:
1722: while ('\0' != *++s3) {
1723: if (*s2 != *s3) { /* mismatch */
1724: s3 = strchr(s3, *s1);
1725: break;
1726: }
1727: if (*s3 == *s1) { /* found the final delimiter */
1728: match = 1;
1729: break;
1730: }
1731: s2++;
1732: }
1733:
1734: out:
1735: if (NULL == s3)
1736: s3 = strchr(s2, '\0');
1.114 schwarze 1737: else if (*s3 != '\0')
1.71 schwarze 1738: s3++;
1739: *pos = s3 - v;
1740: return(match);
1741: }
1742:
1.77 schwarze 1743: /*
1744: * Evaluate an optionally negated single character, numerical,
1745: * or string condition.
1746: */
1.71 schwarze 1747: static int
1.106 schwarze 1748: roff_evalcond(struct roff *r, int ln, const char *v, int *pos)
1.5 schwarze 1749: {
1.113 schwarze 1750: int number, savepos, wanttrue;
1.5 schwarze 1751:
1.71 schwarze 1752: if ('!' == v[*pos]) {
1753: wanttrue = 0;
1754: (*pos)++;
1755: } else
1756: wanttrue = 1;
1757:
1.5 schwarze 1758: switch (v[*pos]) {
1.112 schwarze 1759: case '\0':
1760: return(0);
1.80 schwarze 1761: case 'n':
1.71 schwarze 1762: /* FALLTHROUGH */
1.80 schwarze 1763: case 'o':
1.5 schwarze 1764: (*pos)++;
1.71 schwarze 1765: return(wanttrue);
1.80 schwarze 1766: case 'c':
1.71 schwarze 1767: /* FALLTHROUGH */
1.80 schwarze 1768: case 'd':
1.71 schwarze 1769: /* FALLTHROUGH */
1.80 schwarze 1770: case 'e':
1.5 schwarze 1771: /* FALLTHROUGH */
1.80 schwarze 1772: case 'r':
1.5 schwarze 1773: /* FALLTHROUGH */
1.80 schwarze 1774: case 't':
1.111 schwarze 1775: /* FALLTHROUGH */
1776: case 'v':
1.5 schwarze 1777: (*pos)++;
1.71 schwarze 1778: return(!wanttrue);
1.5 schwarze 1779: default:
1780: break;
1781: }
1782:
1.113 schwarze 1783: savepos = *pos;
1.133 schwarze 1784: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.77 schwarze 1785: return((number > 0) == wanttrue);
1.113 schwarze 1786: else if (*pos == savepos)
1787: return(roff_evalstrcond(v, pos) == wanttrue);
1.77 schwarze 1788: else
1.113 schwarze 1789: return (0);
1.5 schwarze 1790: }
1791:
1.2 schwarze 1792: static enum rofferr
1.21 schwarze 1793: roff_line_ignore(ROFF_ARGS)
1.6 schwarze 1794: {
1.30 schwarze 1795:
1.21 schwarze 1796: return(ROFF_IGN);
1797: }
1798:
1799: static enum rofferr
1.123 schwarze 1800: roff_insec(ROFF_ARGS)
1801: {
1802:
1803: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
1804: ln, ppos, roffs[tok].name);
1805: return(ROFF_IGN);
1806: }
1807:
1808: static enum rofferr
1809: roff_unsupp(ROFF_ARGS)
1810: {
1811:
1812: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
1813: ln, ppos, roffs[tok].name);
1814: return(ROFF_IGN);
1815: }
1816:
1817: static enum rofferr
1.2 schwarze 1818: roff_cond(ROFF_ARGS)
1819: {
1.46 schwarze 1820:
1821: roffnode_push(r, tok, NULL, ln, ppos);
1.2 schwarze 1822:
1.80 schwarze 1823: /*
1.35 schwarze 1824: * An `.el' has no conditional body: it will consume the value
1825: * of the current rstack entry set in prior `ie' calls or
1.80 schwarze 1826: * defaults to DENY.
1.35 schwarze 1827: *
1828: * If we're not an `el', however, then evaluate the conditional.
1829: */
1.1 schwarze 1830:
1.110 schwarze 1831: r->last->rule = tok == ROFF_el ?
1.80 schwarze 1832: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.110 schwarze 1833: roff_evalcond(r, ln, buf->buf, &pos);
1.2 schwarze 1834:
1.35 schwarze 1835: /*
1836: * An if-else will put the NEGATION of the current evaluated
1837: * conditional into the stack of rules.
1838: */
1839:
1.110 schwarze 1840: if (tok == ROFF_ie) {
1.96 schwarze 1841: if (r->rstackpos + 1 == r->rstacksz) {
1842: r->rstacksz += 16;
1843: r->rstack = mandoc_reallocarray(r->rstack,
1844: r->rstacksz, sizeof(int));
1.35 schwarze 1845: }
1.71 schwarze 1846: r->rstack[++r->rstackpos] = !r->last->rule;
1.2 schwarze 1847: }
1.5 schwarze 1848:
1849: /* If the parent has false as its rule, then so do we. */
1850:
1.71 schwarze 1851: if (r->last->parent && !r->last->parent->rule)
1852: r->last->rule = 0;
1.5 schwarze 1853:
1854: /*
1.46 schwarze 1855: * Determine scope.
1856: * If there is nothing on the line after the conditional,
1857: * not even whitespace, use next-line scope.
1.5 schwarze 1858: */
1.2 schwarze 1859:
1.110 schwarze 1860: if (buf->buf[pos] == '\0') {
1.46 schwarze 1861: r->last->endspan = 2;
1862: goto out;
1863: }
1864:
1.110 schwarze 1865: while (buf->buf[pos] == ' ')
1.46 schwarze 1866: pos++;
1867:
1868: /* An opening brace requests multiline scope. */
1.2 schwarze 1869:
1.110 schwarze 1870: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.2 schwarze 1871: r->last->endspan = -1;
1872: pos += 2;
1.46 schwarze 1873: goto out;
1.80 schwarze 1874: }
1.2 schwarze 1875:
1876: /*
1.46 schwarze 1877: * Anything else following the conditional causes
1878: * single-line scope. Warn if the scope contains
1879: * nothing but trailing whitespace.
1.2 schwarze 1880: */
1881:
1.110 schwarze 1882: if (buf->buf[pos] == '\0')
1.89 schwarze 1883: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
1884: ln, ppos, roffs[tok].name);
1.2 schwarze 1885:
1.46 schwarze 1886: r->last->endspan = 1;
1.1 schwarze 1887:
1.46 schwarze 1888: out:
1.2 schwarze 1889: *offs = pos;
1890: return(ROFF_RERUN);
1.1 schwarze 1891: }
1892:
1.2 schwarze 1893: static enum rofferr
1.7 schwarze 1894: roff_ds(ROFF_ARGS)
1895: {
1.85 schwarze 1896: char *string;
1897: const char *name;
1898: size_t namesz;
1.10 schwarze 1899:
1.123 schwarze 1900: /* Ignore groff compatibility mode for now. */
1901:
1902: if (tok == ROFF_ds1)
1903: tok = ROFF_ds;
1904: else if (tok == ROFF_as1)
1905: tok = ROFF_as;
1906:
1.10 schwarze 1907: /*
1.85 schwarze 1908: * The first word is the name of the string.
1909: * If it is empty or terminated by an escape sequence,
1910: * abort the `ds' request without defining anything.
1.10 schwarze 1911: */
1.7 schwarze 1912:
1.110 schwarze 1913: name = string = buf->buf + pos;
1914: if (*name == '\0')
1.7 schwarze 1915: return(ROFF_IGN);
1916:
1.85 schwarze 1917: namesz = roff_getname(r, &string, ln, pos);
1.110 schwarze 1918: if (name[namesz] == '\\')
1.85 schwarze 1919: return(ROFF_IGN);
1920:
1921: /* Read past the initial double-quote, if any. */
1.110 schwarze 1922: if (*string == '"')
1.7 schwarze 1923: string++;
1924:
1.10 schwarze 1925: /* The rest is the value. */
1.85 schwarze 1926: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
1927: ROFF_as == tok);
1.7 schwarze 1928: return(ROFF_IGN);
1929: }
1930:
1.77 schwarze 1931: /*
1932: * Parse a single operator, one or two characters long.
1933: * If the operator is recognized, return success and advance the
1934: * parse point, else return failure and let the parse point unchanged.
1935: */
1936: static int
1937: roff_getop(const char *v, int *pos, char *res)
1938: {
1939:
1940: *res = v[*pos];
1941:
1942: switch (*res) {
1.80 schwarze 1943: case '+':
1.77 schwarze 1944: /* FALLTHROUGH */
1.80 schwarze 1945: case '-':
1.77 schwarze 1946: /* FALLTHROUGH */
1.80 schwarze 1947: case '*':
1.77 schwarze 1948: /* FALLTHROUGH */
1.80 schwarze 1949: case '/':
1.77 schwarze 1950: /* FALLTHROUGH */
1.80 schwarze 1951: case '%':
1.77 schwarze 1952: /* FALLTHROUGH */
1.80 schwarze 1953: case '&':
1.77 schwarze 1954: /* FALLTHROUGH */
1.80 schwarze 1955: case ':':
1.77 schwarze 1956: break;
1957: case '<':
1958: switch (v[*pos + 1]) {
1.80 schwarze 1959: case '=':
1.77 schwarze 1960: *res = 'l';
1961: (*pos)++;
1962: break;
1.80 schwarze 1963: case '>':
1.77 schwarze 1964: *res = '!';
1965: (*pos)++;
1966: break;
1.80 schwarze 1967: case '?':
1.77 schwarze 1968: *res = 'i';
1969: (*pos)++;
1970: break;
1971: default:
1972: break;
1973: }
1974: break;
1975: case '>':
1976: switch (v[*pos + 1]) {
1.80 schwarze 1977: case '=':
1.77 schwarze 1978: *res = 'g';
1979: (*pos)++;
1980: break;
1.80 schwarze 1981: case '?':
1.77 schwarze 1982: *res = 'a';
1983: (*pos)++;
1984: break;
1985: default:
1986: break;
1987: }
1988: break;
1989: case '=':
1990: if ('=' == v[*pos + 1])
1991: (*pos)++;
1992: break;
1993: default:
1994: return(0);
1995: }
1996: (*pos)++;
1997:
1998: return(*res);
1999: }
2000:
2001: /*
2002: * Evaluate either a parenthesized numeric expression
2003: * or a single signed integer number.
2004: */
2005: static int
1.106 schwarze 2006: roff_evalpar(struct roff *r, int ln,
1.133 schwarze 2007: const char *v, int *pos, int *res, int flags)
1.77 schwarze 2008: {
2009:
2010: if ('(' != v[*pos])
1.133 schwarze 2011: return(roff_getnum(v, pos, res, flags));
1.77 schwarze 2012:
2013: (*pos)++;
1.133 schwarze 2014: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.77 schwarze 2015: return(0);
2016:
1.79 schwarze 2017: /*
2018: * Omission of the closing parenthesis
2019: * is an error in validation mode,
2020: * but ignored in evaluation mode.
2021: */
2022:
1.77 schwarze 2023: if (')' == v[*pos])
2024: (*pos)++;
1.79 schwarze 2025: else if (NULL == res)
2026: return(0);
1.77 schwarze 2027:
2028: return(1);
2029: }
2030:
2031: /*
2032: * Evaluate a complete numeric expression.
2033: * Proceed left to right, there is no concept of precedence.
2034: */
2035: static int
1.106 schwarze 2036: roff_evalnum(struct roff *r, int ln, const char *v,
1.133 schwarze 2037: int *pos, int *res, int flags)
1.77 schwarze 2038: {
2039: int mypos, operand2;
2040: char operator;
2041:
2042: if (NULL == pos) {
2043: mypos = 0;
2044: pos = &mypos;
2045: }
2046:
1.133 schwarze 2047: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2048: while (isspace((unsigned char)v[*pos]))
2049: (*pos)++;
2050:
1.133 schwarze 2051: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.77 schwarze 2052: return(0);
2053:
2054: while (1) {
1.133 schwarze 2055: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2056: while (isspace((unsigned char)v[*pos]))
2057: (*pos)++;
2058:
2059: if ( ! roff_getop(v, pos, &operator))
2060: break;
2061:
1.133 schwarze 2062: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2063: while (isspace((unsigned char)v[*pos]))
2064: (*pos)++;
2065:
1.133 schwarze 2066: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.77 schwarze 2067: return(0);
2068:
1.133 schwarze 2069: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2070: while (isspace((unsigned char)v[*pos]))
2071: (*pos)++;
1.79 schwarze 2072:
2073: if (NULL == res)
2074: continue;
1.77 schwarze 2075:
2076: switch (operator) {
1.80 schwarze 2077: case '+':
1.77 schwarze 2078: *res += operand2;
2079: break;
1.80 schwarze 2080: case '-':
1.77 schwarze 2081: *res -= operand2;
2082: break;
1.80 schwarze 2083: case '*':
1.77 schwarze 2084: *res *= operand2;
2085: break;
1.80 schwarze 2086: case '/':
1.116 schwarze 2087: if (operand2 == 0) {
1.106 schwarze 2088: mandoc_msg(MANDOCERR_DIVZERO,
2089: r->parse, ln, *pos, v);
2090: *res = 0;
2091: break;
2092: }
1.77 schwarze 2093: *res /= operand2;
2094: break;
1.80 schwarze 2095: case '%':
1.116 schwarze 2096: if (operand2 == 0) {
2097: mandoc_msg(MANDOCERR_DIVZERO,
2098: r->parse, ln, *pos, v);
2099: *res = 0;
2100: break;
2101: }
1.77 schwarze 2102: *res %= operand2;
2103: break;
1.80 schwarze 2104: case '<':
1.77 schwarze 2105: *res = *res < operand2;
2106: break;
1.80 schwarze 2107: case '>':
1.77 schwarze 2108: *res = *res > operand2;
2109: break;
1.80 schwarze 2110: case 'l':
1.77 schwarze 2111: *res = *res <= operand2;
2112: break;
1.80 schwarze 2113: case 'g':
1.77 schwarze 2114: *res = *res >= operand2;
2115: break;
1.80 schwarze 2116: case '=':
1.77 schwarze 2117: *res = *res == operand2;
2118: break;
1.80 schwarze 2119: case '!':
1.77 schwarze 2120: *res = *res != operand2;
2121: break;
1.80 schwarze 2122: case '&':
1.77 schwarze 2123: *res = *res && operand2;
2124: break;
1.80 schwarze 2125: case ':':
1.77 schwarze 2126: *res = *res || operand2;
2127: break;
1.80 schwarze 2128: case 'i':
1.77 schwarze 2129: if (operand2 < *res)
2130: *res = operand2;
2131: break;
1.80 schwarze 2132: case 'a':
1.77 schwarze 2133: if (operand2 > *res)
2134: *res = operand2;
2135: break;
2136: default:
2137: abort();
2138: }
2139: }
2140: return(1);
2141: }
2142:
1.52 schwarze 2143: void
1.60 schwarze 2144: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.41 schwarze 2145: {
1.52 schwarze 2146: struct roffreg *reg;
2147:
2148: /* Search for an existing register with the same name. */
2149: reg = r->regtab;
2150:
2151: while (reg && strcmp(name, reg->key.p))
2152: reg = reg->next;
1.41 schwarze 2153:
1.52 schwarze 2154: if (NULL == reg) {
2155: /* Create a new register. */
2156: reg = mandoc_malloc(sizeof(struct roffreg));
2157: reg->key.p = mandoc_strdup(name);
2158: reg->key.sz = strlen(name);
1.60 schwarze 2159: reg->val = 0;
1.52 schwarze 2160: reg->next = r->regtab;
2161: r->regtab = reg;
2162: }
2163:
1.60 schwarze 2164: if ('+' == sign)
2165: reg->val += val;
2166: else if ('-' == sign)
2167: reg->val -= val;
2168: else
2169: reg->val = val;
1.41 schwarze 2170: }
2171:
1.65 schwarze 2172: /*
2173: * Handle some predefined read-only number registers.
2174: * For now, return -1 if the requested register is not predefined;
2175: * in case a predefined read-only register having the value -1
2176: * were to turn up, another special value would have to be chosen.
2177: */
2178: static int
2179: roff_getregro(const char *name)
2180: {
2181:
2182: switch (*name) {
1.80 schwarze 2183: case 'A': /* ASCII approximation mode is always off. */
1.65 schwarze 2184: return(0);
1.80 schwarze 2185: case 'g': /* Groff compatibility mode is always on. */
1.65 schwarze 2186: return(1);
1.80 schwarze 2187: case 'H': /* Fixed horizontal resolution. */
1.65 schwarze 2188: return (24);
1.80 schwarze 2189: case 'j': /* Always adjust left margin only. */
1.65 schwarze 2190: return(0);
1.80 schwarze 2191: case 'T': /* Some output device is always defined. */
1.65 schwarze 2192: return(1);
1.80 schwarze 2193: case 'V': /* Fixed vertical resolution. */
1.65 schwarze 2194: return (40);
2195: default:
2196: return (-1);
2197: }
2198: }
2199:
1.53 schwarze 2200: int
1.52 schwarze 2201: roff_getreg(const struct roff *r, const char *name)
1.41 schwarze 2202: {
1.52 schwarze 2203: struct roffreg *reg;
1.65 schwarze 2204: int val;
2205:
2206: if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) {
2207: val = roff_getregro(name + 1);
2208: if (-1 != val)
2209: return (val);
2210: }
1.52 schwarze 2211:
2212: for (reg = r->regtab; reg; reg = reg->next)
2213: if (0 == strcmp(name, reg->key.p))
1.53 schwarze 2214: return(reg->val);
2215:
2216: return(0);
2217: }
2218:
2219: static int
2220: roff_getregn(const struct roff *r, const char *name, size_t len)
2221: {
2222: struct roffreg *reg;
1.65 schwarze 2223: int val;
2224:
2225: if ('.' == name[0] && 2 == len) {
2226: val = roff_getregro(name + 1);
2227: if (-1 != val)
2228: return (val);
2229: }
1.53 schwarze 2230:
2231: for (reg = r->regtab; reg; reg = reg->next)
2232: if (len == reg->key.sz &&
2233: 0 == strncmp(name, reg->key.p, len))
2234: return(reg->val);
1.41 schwarze 2235:
1.52 schwarze 2236: return(0);
1.41 schwarze 2237: }
2238:
1.52 schwarze 2239: static void
2240: roff_freereg(struct roffreg *reg)
1.41 schwarze 2241: {
1.52 schwarze 2242: struct roffreg *old_reg;
1.41 schwarze 2243:
1.52 schwarze 2244: while (NULL != reg) {
2245: free(reg->key.p);
2246: old_reg = reg;
2247: reg = reg->next;
2248: free(old_reg);
2249: }
1.41 schwarze 2250: }
1.7 schwarze 2251:
2252: static enum rofferr
1.6 schwarze 2253: roff_nr(ROFF_ARGS)
1.1 schwarze 2254: {
1.85 schwarze 2255: char *key, *val;
2256: size_t keysz;
1.37 schwarze 2257: int iv;
1.60 schwarze 2258: char sign;
1.6 schwarze 2259:
1.110 schwarze 2260: key = val = buf->buf + pos;
2261: if (*key == '\0')
1.85 schwarze 2262: return(ROFF_IGN);
2263:
2264: keysz = roff_getname(r, &val, ln, pos);
1.110 schwarze 2265: if (key[keysz] == '\\')
1.85 schwarze 2266: return(ROFF_IGN);
2267: key[keysz] = '\0';
1.6 schwarze 2268:
1.60 schwarze 2269: sign = *val;
1.110 schwarze 2270: if (sign == '+' || sign == '-')
1.60 schwarze 2271: val++;
2272:
1.133 schwarze 2273: if (roff_evalnum(r, ln, val, NULL, &iv, ROFFNUM_SCALE))
1.77 schwarze 2274: roff_setreg(r, key, iv, sign);
1.1 schwarze 2275:
1.76 schwarze 2276: return(ROFF_IGN);
2277: }
2278:
2279: static enum rofferr
2280: roff_rr(ROFF_ARGS)
2281: {
2282: struct roffreg *reg, **prev;
1.85 schwarze 2283: char *name, *cp;
2284: size_t namesz;
1.76 schwarze 2285:
1.110 schwarze 2286: name = cp = buf->buf + pos;
2287: if (*name == '\0')
1.85 schwarze 2288: return(ROFF_IGN);
2289: namesz = roff_getname(r, &cp, ln, pos);
2290: name[namesz] = '\0';
1.76 schwarze 2291:
2292: prev = &r->regtab;
2293: while (1) {
2294: reg = *prev;
1.110 schwarze 2295: if (reg == NULL || !strcmp(name, reg->key.p))
1.76 schwarze 2296: break;
2297: prev = ®->next;
2298: }
1.110 schwarze 2299: if (reg != NULL) {
1.76 schwarze 2300: *prev = reg->next;
2301: free(reg->key.p);
2302: free(reg);
2303: }
1.29 schwarze 2304: return(ROFF_IGN);
2305: }
2306:
2307: static enum rofferr
2308: roff_rm(ROFF_ARGS)
2309: {
2310: const char *name;
2311: char *cp;
1.85 schwarze 2312: size_t namesz;
1.29 schwarze 2313:
1.110 schwarze 2314: cp = buf->buf + pos;
2315: while (*cp != '\0') {
1.85 schwarze 2316: name = cp;
1.110 schwarze 2317: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.85 schwarze 2318: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.110 schwarze 2319: if (name[namesz] == '\\')
1.85 schwarze 2320: break;
1.29 schwarze 2321: }
1.51 schwarze 2322: return(ROFF_IGN);
2323: }
2324:
2325: static enum rofferr
2326: roff_it(ROFF_ARGS)
2327: {
2328: int iv;
2329:
2330: /* Parse the number of lines. */
1.133 schwarze 2331:
2332: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.95 schwarze 2333: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.110 schwarze 2334: ln, ppos, buf->buf + 1);
1.51 schwarze 2335: return(ROFF_IGN);
2336: }
2337:
1.134 schwarze 2338: while (isspace((unsigned char)buf->buf[pos]))
2339: pos++;
2340:
2341: /*
2342: * Arm the input line trap.
2343: * Special-casing "an-trap" is an ugly workaround to cope
2344: * with DocBook stupidly fiddling with man(7) internals.
2345: */
1.133 schwarze 2346:
1.51 schwarze 2347: roffit_lines = iv;
1.134 schwarze 2348: roffit_macro = mandoc_strdup(iv != 1 ||
2349: strcmp(buf->buf + pos, "an-trap") ?
2350: buf->buf + pos : "br");
1.2 schwarze 2351: return(ROFF_IGN);
1.47 schwarze 2352: }
2353:
2354: static enum rofferr
2355: roff_Dd(ROFF_ARGS)
2356: {
2357: const char *const *cp;
2358:
1.99 schwarze 2359: if ((r->options & (MPARSE_MDOC | MPARSE_QUICK)) == 0)
1.47 schwarze 2360: for (cp = __mdoc_reserved; *cp; cp++)
2361: roff_setstr(r, *cp, NULL, 0);
2362:
1.99 schwarze 2363: if (r->format == 0)
2364: r->format = MPARSE_MDOC;
2365:
1.47 schwarze 2366: return(ROFF_CONT);
2367: }
2368:
2369: static enum rofferr
2370: roff_TH(ROFF_ARGS)
2371: {
2372: const char *const *cp;
2373:
1.99 schwarze 2374: if ((r->options & MPARSE_QUICK) == 0)
1.47 schwarze 2375: for (cp = __man_reserved; *cp; cp++)
2376: roff_setstr(r, *cp, NULL, 0);
2377:
1.99 schwarze 2378: if (r->format == 0)
2379: r->format = MPARSE_MAN;
2380:
1.47 schwarze 2381: return(ROFF_CONT);
1.14 schwarze 2382: }
2383:
2384: static enum rofferr
1.27 schwarze 2385: roff_TE(ROFF_ARGS)
2386: {
2387:
2388: if (NULL == r->tbl)
1.94 schwarze 2389: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2390: ln, ppos, "TE");
1.130 schwarze 2391: else if ( ! tbl_end(&r->tbl)) {
2392: free(buf->buf);
2393: buf->buf = mandoc_strdup(".sp");
2394: buf->sz = 4;
2395: return(ROFF_REPARSE);
2396: }
1.27 schwarze 2397: return(ROFF_IGN);
2398: }
2399:
2400: static enum rofferr
2401: roff_T_(ROFF_ARGS)
2402: {
2403:
2404: if (NULL == r->tbl)
1.94 schwarze 2405: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2406: ln, ppos, "T&");
1.27 schwarze 2407: else
2408: tbl_restart(ppos, ln, r->tbl);
2409:
2410: return(ROFF_IGN);
2411: }
2412:
1.102 schwarze 2413: /*
2414: * Handle in-line equation delimiters.
2415: */
2416: static enum rofferr
1.110 schwarze 2417: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.41 schwarze 2418: {
1.105 schwarze 2419: char *cp1, *cp2;
2420: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.41 schwarze 2421:
1.102 schwarze 2422: /*
2423: * Outside equations, look for an opening delimiter.
2424: * If we are inside an equation, we already know it is
2425: * in-line, or this function wouldn't have been called;
2426: * so look for a closing delimiter.
2427: */
2428:
1.110 schwarze 2429: cp1 = buf->buf + pos;
1.102 schwarze 2430: cp2 = strchr(cp1, r->eqn == NULL ?
2431: r->last_eqn->odelim : r->last_eqn->cdelim);
2432: if (cp2 == NULL)
2433: return(ROFF_CONT);
2434:
1.105 schwarze 2435: *cp2++ = '\0';
2436: bef_pr = bef_nl = aft_nl = aft_pr = "";
2437:
2438: /* Handle preceding text, protecting whitespace. */
2439:
1.110 schwarze 2440: if (*buf->buf != '\0') {
1.105 schwarze 2441: if (r->eqn == NULL)
2442: bef_pr = "\\&";
2443: bef_nl = "\n";
2444: }
2445:
2446: /*
2447: * Prepare replacing the delimiter with an equation macro
2448: * and drop leading white space from the equation.
2449: */
1.102 schwarze 2450:
1.105 schwarze 2451: if (r->eqn == NULL) {
2452: while (*cp2 == ' ')
2453: cp2++;
2454: mac = ".EQ";
2455: } else
2456: mac = ".EN";
2457:
2458: /* Handle following text, protecting whitespace. */
2459:
2460: if (*cp2 != '\0') {
2461: aft_nl = "\n";
2462: if (r->eqn != NULL)
2463: aft_pr = "\\&";
2464: }
2465:
2466: /* Do the actual replacement. */
2467:
1.110 schwarze 2468: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.105 schwarze 2469: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.110 schwarze 2470: free(buf->buf);
2471: buf->buf = cp1;
1.102 schwarze 2472:
2473: /* Toggle the in-line state of the eqn subsystem. */
2474:
2475: r->eqn_inline = r->eqn == NULL;
2476: return(ROFF_REPARSE);
1.41 schwarze 2477: }
2478:
1.107 schwarze 2479: static enum rofferr
2480: roff_EQ(ROFF_ARGS)
1.32 schwarze 2481: {
1.41 schwarze 2482: struct eqn_node *e;
1.32 schwarze 2483:
1.110 schwarze 2484: assert(r->eqn == NULL);
1.107 schwarze 2485: e = eqn_alloc(ppos, ln, r->parse);
1.32 schwarze 2486:
1.102 schwarze 2487: if (r->last_eqn) {
1.32 schwarze 2488: r->last_eqn->next = e;
1.102 schwarze 2489: e->delim = r->last_eqn->delim;
2490: e->odelim = r->last_eqn->odelim;
2491: e->cdelim = r->last_eqn->cdelim;
2492: } else
1.32 schwarze 2493: r->first_eqn = r->last_eqn = e;
2494:
2495: r->eqn = r->last_eqn = e;
1.41 schwarze 2496:
1.110 schwarze 2497: if (buf->buf[pos] != '\0')
1.107 schwarze 2498: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 2499: ".EQ %s", buf->buf + pos);
1.41 schwarze 2500:
1.32 schwarze 2501: return(ROFF_IGN);
2502: }
2503:
2504: static enum rofferr
2505: roff_EN(ROFF_ARGS)
2506: {
2507:
1.94 schwarze 2508: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
1.32 schwarze 2509: return(ROFF_IGN);
2510: }
2511:
2512: static enum rofferr
1.27 schwarze 2513: roff_TS(ROFF_ARGS)
2514: {
1.49 schwarze 2515: struct tbl_node *tbl;
1.27 schwarze 2516:
2517: if (r->tbl) {
1.94 schwarze 2518: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
2519: ln, ppos, "TS breaks TS");
1.41 schwarze 2520: tbl_end(&r->tbl);
1.27 schwarze 2521: }
2522:
1.49 schwarze 2523: tbl = tbl_alloc(ppos, ln, r->parse);
1.27 schwarze 2524:
2525: if (r->last_tbl)
1.49 schwarze 2526: r->last_tbl->next = tbl;
1.27 schwarze 2527: else
1.49 schwarze 2528: r->first_tbl = r->last_tbl = tbl;
1.27 schwarze 2529:
1.49 schwarze 2530: r->tbl = r->last_tbl = tbl;
1.27 schwarze 2531: return(ROFF_IGN);
1.123 schwarze 2532: }
2533:
2534: static enum rofferr
2535: roff_brp(ROFF_ARGS)
2536: {
2537:
2538: buf->buf[pos - 1] = '\0';
2539: return(ROFF_CONT);
1.27 schwarze 2540: }
2541:
2542: static enum rofferr
1.48 schwarze 2543: roff_cc(ROFF_ARGS)
2544: {
2545: const char *p;
2546:
1.110 schwarze 2547: p = buf->buf + pos;
1.48 schwarze 2548:
1.110 schwarze 2549: if (*p == '\0' || (r->control = *p++) == '.')
1.48 schwarze 2550: r->control = 0;
2551:
1.110 schwarze 2552: if (*p != '\0')
1.132 schwarze 2553: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
2554: ln, p - buf->buf, "cc ... %s", p);
1.48 schwarze 2555:
2556: return(ROFF_IGN);
2557: }
2558:
2559: static enum rofferr
1.42 schwarze 2560: roff_tr(ROFF_ARGS)
2561: {
2562: const char *p, *first, *second;
2563: size_t fsz, ssz;
2564: enum mandoc_esc esc;
2565:
1.110 schwarze 2566: p = buf->buf + pos;
1.42 schwarze 2567:
1.110 schwarze 2568: if (*p == '\0') {
1.132 schwarze 2569: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.42 schwarze 2570: return(ROFF_IGN);
2571: }
2572:
1.110 schwarze 2573: while (*p != '\0') {
1.42 schwarze 2574: fsz = ssz = 1;
2575:
2576: first = p++;
1.110 schwarze 2577: if (*first == '\\') {
1.42 schwarze 2578: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 2579: if (esc == ESCAPE_ERROR) {
1.92 schwarze 2580: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 2581: ln, (int)(p - buf->buf), first);
1.42 schwarze 2582: return(ROFF_IGN);
2583: }
2584: fsz = (size_t)(p - first);
2585: }
2586:
2587: second = p++;
1.110 schwarze 2588: if (*second == '\\') {
1.42 schwarze 2589: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 2590: if (esc == ESCAPE_ERROR) {
1.92 schwarze 2591: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 2592: ln, (int)(p - buf->buf), second);
1.42 schwarze 2593: return(ROFF_IGN);
2594: }
2595: ssz = (size_t)(p - second);
1.110 schwarze 2596: } else if (*second == '\0') {
1.132 schwarze 2597: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
2598: ln, first - buf->buf, "tr %s", first);
1.42 schwarze 2599: second = " ";
2600: p--;
2601: }
2602:
2603: if (fsz > 1) {
1.80 schwarze 2604: roff_setstrn(&r->xmbtab, first, fsz,
2605: second, ssz, 0);
1.42 schwarze 2606: continue;
2607: }
2608:
1.110 schwarze 2609: if (r->xtab == NULL)
1.80 schwarze 2610: r->xtab = mandoc_calloc(128,
2611: sizeof(struct roffstr));
1.42 schwarze 2612:
2613: free(r->xtab[(int)*first].p);
2614: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
2615: r->xtab[(int)*first].sz = ssz;
2616: }
2617:
2618: return(ROFF_IGN);
2619: }
2620:
2621: static enum rofferr
1.14 schwarze 2622: roff_so(ROFF_ARGS)
2623: {
1.121 schwarze 2624: char *name, *cp;
1.15 schwarze 2625:
1.110 schwarze 2626: name = buf->buf + pos;
1.97 schwarze 2627: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.14 schwarze 2628:
1.22 schwarze 2629: /*
2630: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
2631: * opening anything that's not in our cwd or anything beneath
2632: * it. Thus, explicitly disallow traversing up the file-system
2633: * or using absolute paths.
2634: */
2635:
1.110 schwarze 2636: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.83 schwarze 2637: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
2638: ".so %s", name);
1.121 schwarze 2639: buf->sz = mandoc_asprintf(&cp,
2640: ".sp\nSee the file %s.\n.sp", name) + 1;
2641: free(buf->buf);
2642: buf->buf = cp;
2643: *offs = 0;
2644: return(ROFF_REPARSE);
1.14 schwarze 2645: }
2646:
2647: *offs = pos;
2648: return(ROFF_SO);
1.7 schwarze 2649: }
2650:
1.16 schwarze 2651: static enum rofferr
2652: roff_userdef(ROFF_ARGS)
1.12 schwarze 2653: {
1.135 ! schwarze 2654: const char *arg[9], *ap;
1.16 schwarze 2655: char *cp, *n1, *n2;
1.25 schwarze 2656: int i;
1.135 ! schwarze 2657: size_t asz, rsz;
1.12 schwarze 2658:
1.16 schwarze 2659: /*
2660: * Collect pointers to macro argument strings
1.61 schwarze 2661: * and NUL-terminate them.
1.16 schwarze 2662: */
1.135 ! schwarze 2663:
1.110 schwarze 2664: cp = buf->buf + pos;
1.25 schwarze 2665: for (i = 0; i < 9; i++)
1.110 schwarze 2666: arg[i] = *cp == '\0' ? "" :
1.35 schwarze 2667: mandoc_getarg(r->parse, &cp, ln, &pos);
1.16 schwarze 2668:
2669: /*
2670: * Expand macro arguments.
1.12 schwarze 2671: */
1.135 ! schwarze 2672:
! 2673: buf->sz = strlen(r->current_string) + 1;
! 2674: n1 = cp = mandoc_malloc(buf->sz);
! 2675: memcpy(n1, r->current_string, buf->sz);
! 2676: while (*cp != '\0') {
! 2677:
! 2678: /* Scan ahead for the next argument invocation. */
! 2679:
! 2680: if (*cp++ != '\\')
! 2681: continue;
! 2682: if (*cp++ != '$')
! 2683: continue;
! 2684: i = *cp - '1';
! 2685: if (0 > i || 8 < i)
1.16 schwarze 2686: continue;
1.135 ! schwarze 2687: cp -= 2;
! 2688:
! 2689: /*
! 2690: * Determine the size of the expanded argument,
! 2691: * taking escaping of quotes into account.
! 2692: */
! 2693:
! 2694: asz = 0;
! 2695: for (ap = arg[i]; *ap != '\0'; ap++) {
! 2696: asz++;
! 2697: if (*ap == '"')
! 2698: asz += 3;
! 2699: }
! 2700: if (asz != 3) {
! 2701:
! 2702: /*
! 2703: * Determine the size of the rest of the
! 2704: * unexpanded macro, including the NUL.
! 2705: */
! 2706:
! 2707: rsz = buf->sz - (cp - n1) - 3;
! 2708:
! 2709: /*
! 2710: * When shrinking, move before
! 2711: * releasing the storage.
! 2712: */
! 2713:
! 2714: if (asz < 3)
! 2715: memmove(cp + asz, cp + 3, rsz);
! 2716:
! 2717: /*
! 2718: * Resize the storage for the macro
! 2719: * and readjust the parse pointer.
! 2720: */
! 2721:
! 2722: buf->sz += asz - 3;
! 2723: n2 = mandoc_realloc(n1, buf->sz);
! 2724: cp = n2 + (cp - n1);
! 2725: n1 = n2;
! 2726:
! 2727: /*
! 2728: * When growing, make room
! 2729: * for the expanded argument.
! 2730: */
! 2731:
! 2732: if (asz > 3)
! 2733: memmove(cp + asz, cp + 3, rsz);
! 2734: }
! 2735:
! 2736: /* Copy the expanded argument, escaping quotes. */
! 2737:
! 2738: n2 = cp;
! 2739: for (ap = arg[i]; *ap != '\0'; ap++) {
! 2740: if (*ap == '"') {
! 2741: memcpy(n2, "\\(dq", 4);
! 2742: n2 += 4;
! 2743: } else
! 2744: *n2++ = *ap;
1.16 schwarze 2745: }
1.12 schwarze 2746: }
2747:
1.16 schwarze 2748: /*
2749: * Replace the macro invocation
2750: * by the expanded macro.
2751: */
1.135 ! schwarze 2752:
1.110 schwarze 2753: free(buf->buf);
2754: buf->buf = n1;
1.120 schwarze 2755: *offs = 0;
1.16 schwarze 2756:
1.110 schwarze 2757: return(buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
1.16 schwarze 2758: ROFF_REPARSE : ROFF_APPEND);
1.12 schwarze 2759: }
1.28 schwarze 2760:
1.85 schwarze 2761: static size_t
1.28 schwarze 2762: roff_getname(struct roff *r, char **cpp, int ln, int pos)
2763: {
2764: char *name, *cp;
1.85 schwarze 2765: size_t namesz;
1.28 schwarze 2766:
2767: name = *cpp;
2768: if ('\0' == *name)
1.85 schwarze 2769: return(0);
1.28 schwarze 2770:
1.85 schwarze 2771: /* Read until end of name and terminate it with NUL. */
2772: for (cp = name; 1; cp++) {
2773: if ('\0' == *cp || ' ' == *cp) {
2774: namesz = cp - name;
2775: break;
2776: }
1.28 schwarze 2777: if ('\\' != *cp)
2778: continue;
1.88 schwarze 2779: namesz = cp - name;
2780: if ('{' == cp[1] || '}' == cp[1])
2781: break;
1.28 schwarze 2782: cp++;
2783: if ('\\' == *cp)
2784: continue;
1.97 schwarze 2785: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
2786: "%.*s", (int)(cp - name + 1), name);
1.85 schwarze 2787: mandoc_escape((const char **)&cp, NULL, NULL);
2788: break;
1.28 schwarze 2789: }
2790:
2791: /* Read past spaces. */
2792: while (' ' == *cp)
2793: cp++;
2794:
2795: *cpp = cp;
1.85 schwarze 2796: return(namesz);
1.28 schwarze 2797: }
2798:
1.16 schwarze 2799: /*
2800: * Store *string into the user-defined string called *name.
2801: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.66 schwarze 2802: * append == 0: replace mode
2803: * append == 1: single-line append mode
2804: * append == 2: multiline append mode, append '\n' after each call
1.16 schwarze 2805: */
1.8 schwarze 2806: static void
1.16 schwarze 2807: roff_setstr(struct roff *r, const char *name, const char *string,
1.66 schwarze 2808: int append)
1.7 schwarze 2809: {
1.42 schwarze 2810:
2811: roff_setstrn(&r->strtab, name, strlen(name), string,
1.80 schwarze 2812: string ? strlen(string) : 0, append);
1.42 schwarze 2813: }
2814:
2815: static void
2816: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.66 schwarze 2817: const char *string, size_t stringsz, int append)
1.42 schwarze 2818: {
2819: struct roffkv *n;
2820: char *c;
2821: int i;
2822: size_t oldch, newch;
1.7 schwarze 2823:
1.16 schwarze 2824: /* Search for an existing string with the same name. */
1.42 schwarze 2825: n = *r;
2826:
1.84 schwarze 2827: while (n && (namesz != n->key.sz ||
2828: strncmp(n->key.p, name, namesz)))
1.7 schwarze 2829: n = n->next;
1.8 schwarze 2830:
2831: if (NULL == n) {
1.16 schwarze 2832: /* Create a new string table entry. */
1.42 schwarze 2833: n = mandoc_malloc(sizeof(struct roffkv));
2834: n->key.p = mandoc_strndup(name, namesz);
2835: n->key.sz = namesz;
2836: n->val.p = NULL;
2837: n->val.sz = 0;
2838: n->next = *r;
2839: *r = n;
1.66 schwarze 2840: } else if (0 == append) {
1.42 schwarze 2841: free(n->val.p);
2842: n->val.p = NULL;
2843: n->val.sz = 0;
1.16 schwarze 2844: }
2845:
2846: if (NULL == string)
2847: return;
2848:
2849: /*
2850: * One additional byte for the '\n' in multiline mode,
2851: * and one for the terminating '\0'.
2852: */
1.66 schwarze 2853: newch = stringsz + (1 < append ? 2u : 1u);
1.42 schwarze 2854:
2855: if (NULL == n->val.p) {
2856: n->val.p = mandoc_malloc(newch);
2857: *n->val.p = '\0';
1.16 schwarze 2858: oldch = 0;
2859: } else {
1.42 schwarze 2860: oldch = n->val.sz;
2861: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.16 schwarze 2862: }
2863:
2864: /* Skip existing content in the destination buffer. */
1.42 schwarze 2865: c = n->val.p + (int)oldch;
1.16 schwarze 2866:
2867: /* Append new content to the destination buffer. */
1.42 schwarze 2868: i = 0;
2869: while (i < (int)stringsz) {
1.16 schwarze 2870: /*
2871: * Rudimentary roff copy mode:
2872: * Handle escaped backslashes.
2873: */
1.42 schwarze 2874: if ('\\' == string[i] && '\\' == string[i + 1])
2875: i++;
2876: *c++ = string[i++];
1.16 schwarze 2877: }
1.8 schwarze 2878:
1.16 schwarze 2879: /* Append terminating bytes. */
1.66 schwarze 2880: if (1 < append)
1.16 schwarze 2881: *c++ = '\n';
1.42 schwarze 2882:
1.16 schwarze 2883: *c = '\0';
1.42 schwarze 2884: n->val.sz = (int)(c - n->val.p);
1.7 schwarze 2885: }
2886:
1.8 schwarze 2887: static const char *
2888: roff_getstrn(const struct roff *r, const char *name, size_t len)
1.7 schwarze 2889: {
1.42 schwarze 2890: const struct roffkv *n;
1.64 schwarze 2891: int i;
1.7 schwarze 2892:
1.42 schwarze 2893: for (n = r->strtab; n; n = n->next)
1.80 schwarze 2894: if (0 == strncmp(name, n->key.p, len) &&
2895: '\0' == n->key.p[(int)len])
1.42 schwarze 2896: return(n->val.p);
1.64 schwarze 2897:
2898: for (i = 0; i < PREDEFS_MAX; i++)
2899: if (0 == strncmp(name, predefs[i].name, len) &&
2900: '\0' == predefs[i].name[(int)len])
2901: return(predefs[i].str);
1.8 schwarze 2902:
1.42 schwarze 2903: return(NULL);
1.7 schwarze 2904: }
2905:
1.8 schwarze 2906: static void
1.42 schwarze 2907: roff_freestr(struct roffkv *r)
1.7 schwarze 2908: {
1.42 schwarze 2909: struct roffkv *n, *nn;
1.7 schwarze 2910:
1.42 schwarze 2911: for (n = r; n; n = nn) {
2912: free(n->key.p);
2913: free(n->val.p);
1.7 schwarze 2914: nn = n->next;
2915: free(n);
2916: }
1.27 schwarze 2917: }
2918:
2919: const struct tbl_span *
2920: roff_span(const struct roff *r)
2921: {
1.80 schwarze 2922:
1.27 schwarze 2923: return(r->tbl ? tbl_span(r->tbl) : NULL);
1.32 schwarze 2924: }
2925:
2926: const struct eqn *
2927: roff_eqn(const struct roff *r)
2928: {
1.80 schwarze 2929:
1.32 schwarze 2930: return(r->last_eqn ? &r->last_eqn->eqn : NULL);
1.42 schwarze 2931: }
2932:
2933: /*
2934: * Duplicate an input string, making the appropriate character
2935: * conversations (as stipulated by `tr') along the way.
2936: * Returns a heap-allocated string with all the replacements made.
2937: */
2938: char *
2939: roff_strdup(const struct roff *r, const char *p)
2940: {
2941: const struct roffkv *cp;
2942: char *res;
2943: const char *pp;
2944: size_t ssz, sz;
2945: enum mandoc_esc esc;
2946:
2947: if (NULL == r->xmbtab && NULL == r->xtab)
2948: return(mandoc_strdup(p));
2949: else if ('\0' == *p)
2950: return(mandoc_strdup(""));
2951:
2952: /*
2953: * Step through each character looking for term matches
2954: * (remember that a `tr' can be invoked with an escape, which is
2955: * a glyph but the escape is multi-character).
2956: * We only do this if the character hash has been initialised
2957: * and the string is >0 length.
2958: */
2959:
2960: res = NULL;
2961: ssz = 0;
2962:
2963: while ('\0' != *p) {
2964: if ('\\' != *p && r->xtab && r->xtab[(int)*p].p) {
2965: sz = r->xtab[(int)*p].sz;
2966: res = mandoc_realloc(res, ssz + sz + 1);
2967: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
2968: ssz += sz;
2969: p++;
2970: continue;
2971: } else if ('\\' != *p) {
2972: res = mandoc_realloc(res, ssz + 2);
2973: res[ssz++] = *p++;
2974: continue;
2975: }
2976:
2977: /* Search for term matches. */
2978: for (cp = r->xmbtab; cp; cp = cp->next)
2979: if (0 == strncmp(p, cp->key.p, cp->key.sz))
2980: break;
2981:
2982: if (NULL != cp) {
2983: /*
2984: * A match has been found.
2985: * Append the match to the array and move
2986: * forward by its keysize.
2987: */
1.80 schwarze 2988: res = mandoc_realloc(res,
2989: ssz + cp->val.sz + 1);
1.42 schwarze 2990: memcpy(res + ssz, cp->val.p, cp->val.sz);
2991: ssz += cp->val.sz;
2992: p += (int)cp->key.sz;
2993: continue;
2994: }
2995:
2996: /*
2997: * Handle escapes carefully: we need to copy
2998: * over just the escape itself, or else we might
2999: * do replacements within the escape itself.
3000: * Make sure to pass along the bogus string.
3001: */
3002: pp = p++;
3003: esc = mandoc_escape(&p, NULL, NULL);
3004: if (ESCAPE_ERROR == esc) {
3005: sz = strlen(pp);
3006: res = mandoc_realloc(res, ssz + sz + 1);
3007: memcpy(res + ssz, pp, sz);
3008: break;
3009: }
1.80 schwarze 3010: /*
3011: * We bail out on bad escapes.
1.42 schwarze 3012: * No need to warn: we already did so when
3013: * roff_res() was called.
3014: */
3015: sz = (int)(p - pp);
3016: res = mandoc_realloc(res, ssz + sz + 1);
3017: memcpy(res + ssz, pp, sz);
3018: ssz += sz;
3019: }
3020:
3021: res[(int)ssz] = '\0';
3022: return(res);
1.99 schwarze 3023: }
3024:
3025: int
3026: roff_getformat(const struct roff *r)
3027: {
3028:
3029: return(r->format);
1.48 schwarze 3030: }
3031:
3032: /*
1.80 schwarze 3033: * Find out whether a line is a macro line or not.
1.48 schwarze 3034: * If it is, adjust the current position and return one; if it isn't,
3035: * return zero and don't change the current position.
3036: * If the control character has been set with `.cc', then let that grain
3037: * precedence.
3038: * This is slighly contrary to groff, where using the non-breaking
3039: * control character when `cc' has been invoked will cause the
3040: * non-breaking macro contents to be printed verbatim.
3041: */
3042: int
3043: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
3044: {
3045: int pos;
3046:
3047: pos = *ppos;
3048:
3049: if (0 != r->control && cp[pos] == r->control)
3050: pos++;
3051: else if (0 != r->control)
3052: return(0);
3053: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
3054: pos += 2;
3055: else if ('.' == cp[pos] || '\'' == cp[pos])
3056: pos++;
3057: else
3058: return(0);
3059:
3060: while (' ' == cp[pos] || '\t' == cp[pos])
3061: pos++;
3062:
3063: *ppos = pos;
3064: return(1);
1.1 schwarze 3065: }