Annotation of src/usr.bin/mandoc/roff.c, Revision 1.152
1.152 ! schwarze 1: /* $OpenBSD: roff.c,v 1.151 2015/10/13 22:57:49 schwarze Exp $ */
1.1 schwarze 2: /*
1.139 schwarze 3: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.119 schwarze 4: * Copyright (c) 2010-2015 Ingo Schwarze <schwarze@openbsd.org>
1.1 schwarze 5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
1.16 schwarze 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.1 schwarze 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.16 schwarze 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.1 schwarze 13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
1.99 schwarze 18: #include <sys/types.h>
19:
1.1 schwarze 20: #include <assert.h>
1.3 schwarze 21: #include <ctype.h>
1.117 schwarze 22: #include <limits.h>
1.51 schwarze 23: #include <stdio.h>
1.1 schwarze 24: #include <stdlib.h>
25: #include <string.h>
26:
27: #include "mandoc.h"
1.74 schwarze 28: #include "mandoc_aux.h"
1.137 schwarze 29: #include "roff.h"
1.98 daniel 30: #include "libmandoc.h"
1.138 schwarze 31: #include "roff_int.h"
1.27 schwarze 32: #include "libroff.h"
1.2 schwarze 33:
1.43 schwarze 34: /* Maximum number of string expansions per line, to break infinite loops. */
35: #define EXPAND_LIMIT 1000
36:
1.138 schwarze 37: /* --- data types --------------------------------------------------------- */
38:
1.1 schwarze 39: enum rofft {
1.123 schwarze 40: ROFF_ab,
1.20 schwarze 41: ROFF_ad,
1.123 schwarze 42: ROFF_af,
43: ROFF_aln,
44: ROFF_als,
1.2 schwarze 45: ROFF_am,
1.123 schwarze 46: ROFF_am1,
1.2 schwarze 47: ROFF_ami,
1.123 schwarze 48: ROFF_ami1,
1.66 schwarze 49: ROFF_as,
1.123 schwarze 50: ROFF_as1,
51: ROFF_asciify,
52: ROFF_backtrace,
53: ROFF_bd,
54: ROFF_bleedat,
55: ROFF_blm,
56: ROFF_box,
57: ROFF_boxa,
58: ROFF_bp,
59: ROFF_BP,
60: /* MAN_br, MDOC_br */
61: ROFF_break,
62: ROFF_breakchar,
63: ROFF_brnl,
64: ROFF_brp,
65: ROFF_brpnl,
66: ROFF_c2,
1.48 schwarze 67: ROFF_cc,
1.67 schwarze 68: ROFF_ce,
1.123 schwarze 69: ROFF_cf,
70: ROFF_cflags,
71: ROFF_ch,
72: ROFF_char,
73: ROFF_chop,
74: ROFF_class,
75: ROFF_close,
76: ROFF_CL,
77: ROFF_color,
78: ROFF_composite,
79: ROFF_continue,
80: ROFF_cp,
81: ROFF_cropat,
82: ROFF_cs,
83: ROFF_cu,
84: ROFF_da,
85: ROFF_dch,
86: ROFF_Dd,
1.1 schwarze 87: ROFF_de,
1.123 schwarze 88: ROFF_de1,
89: ROFF_defcolor,
1.1 schwarze 90: ROFF_dei,
1.123 schwarze 91: ROFF_dei1,
92: ROFF_device,
93: ROFF_devicem,
94: ROFF_di,
95: ROFF_do,
1.2 schwarze 96: ROFF_ds,
1.123 schwarze 97: ROFF_ds1,
98: ROFF_dwh,
99: ROFF_dt,
100: ROFF_ec,
101: ROFF_ecr,
102: ROFF_ecs,
1.2 schwarze 103: ROFF_el,
1.123 schwarze 104: ROFF_em,
105: ROFF_EN,
106: ROFF_eo,
107: ROFF_EP,
108: ROFF_EQ,
109: ROFF_errprint,
110: ROFF_ev,
111: ROFF_evc,
112: ROFF_ex,
113: ROFF_fallback,
1.58 schwarze 114: ROFF_fam,
1.123 schwarze 115: ROFF_fc,
116: ROFF_fchar,
117: ROFF_fcolor,
118: ROFF_fdeferlig,
119: ROFF_feature,
120: /* MAN_fi; ignored in mdoc(7) */
121: ROFF_fkern,
122: ROFF_fl,
123: ROFF_flig,
124: ROFF_fp,
125: ROFF_fps,
126: ROFF_fschar,
127: ROFF_fspacewidth,
128: ROFF_fspecial,
129: /* MAN_ft; ignored in mdoc(7) */
130: ROFF_ftr,
131: ROFF_fzoom,
132: ROFF_gcolor,
133: ROFF_hc,
134: ROFF_hcode,
135: ROFF_hidechar,
136: ROFF_hla,
137: ROFF_hlm,
138: ROFF_hpf,
139: ROFF_hpfa,
140: ROFF_hpfcode,
1.59 schwarze 141: ROFF_hw,
1.20 schwarze 142: ROFF_hy,
1.123 schwarze 143: ROFF_hylang,
144: ROFF_hylen,
145: ROFF_hym,
146: ROFF_hypp,
147: ROFF_hys,
1.2 schwarze 148: ROFF_ie,
149: ROFF_if,
1.1 schwarze 150: ROFF_ig,
1.123 schwarze 151: /* MAN_in; ignored in mdoc(7) */
152: ROFF_index,
1.30 schwarze 153: ROFF_it,
1.123 schwarze 154: ROFF_itc,
155: ROFF_IX,
156: ROFF_kern,
157: ROFF_kernafter,
158: ROFF_kernbefore,
159: ROFF_kernpair,
160: ROFF_lc,
161: ROFF_lc_ctype,
162: ROFF_lds,
163: ROFF_length,
164: ROFF_letadj,
165: ROFF_lf,
166: ROFF_lg,
167: ROFF_lhang,
168: ROFF_linetabs,
169: /* MAN_ll, MDOC_ll */
170: ROFF_lnr,
171: ROFF_lnrf,
172: ROFF_lpfx,
173: ROFF_ls,
174: ROFF_lsm,
175: ROFF_lt,
176: ROFF_mc,
177: ROFF_mediasize,
178: ROFF_minss,
179: ROFF_mk,
180: ROFF_mso,
1.128 schwarze 181: ROFF_na,
1.20 schwarze 182: ROFF_ne,
1.123 schwarze 183: /* MAN_nf; ignored in mdoc(7) */
1.20 schwarze 184: ROFF_nh,
1.123 schwarze 185: ROFF_nhychar,
186: ROFF_nm,
187: ROFF_nn,
188: ROFF_nop,
1.14 schwarze 189: ROFF_nr,
1.123 schwarze 190: ROFF_nrf,
191: ROFF_nroff,
1.31 schwarze 192: ROFF_ns,
1.123 schwarze 193: ROFF_nx,
194: ROFF_open,
195: ROFF_opena,
196: ROFF_os,
197: ROFF_output,
198: ROFF_padj,
199: ROFF_papersize,
200: ROFF_pc,
201: ROFF_pev,
202: ROFF_pi,
203: ROFF_PI,
1.101 schwarze 204: ROFF_pl,
1.123 schwarze 205: ROFF_pm,
206: ROFF_pn,
207: ROFF_pnr,
208: ROFF_po,
1.31 schwarze 209: ROFF_ps,
1.123 schwarze 210: ROFF_psbb,
211: ROFF_pshape,
212: ROFF_pso,
213: ROFF_ptr,
214: ROFF_pvs,
215: ROFF_rchar,
216: ROFF_rd,
217: ROFF_recursionlimit,
218: ROFF_return,
219: ROFF_rfschar,
220: ROFF_rhang,
221: ROFF_rj,
1.2 schwarze 222: ROFF_rm,
1.123 schwarze 223: ROFF_rn,
224: ROFF_rnn,
1.76 schwarze 225: ROFF_rr,
1.123 schwarze 226: ROFF_rs,
227: ROFF_rt,
228: ROFF_schar,
229: ROFF_sentchar,
230: ROFF_shc,
231: ROFF_shift,
232: ROFF_sizes,
1.14 schwarze 233: ROFF_so,
1.123 schwarze 234: /* MAN_sp, MDOC_sp */
235: ROFF_spacewidth,
236: ROFF_special,
237: ROFF_spreadwarn,
238: ROFF_ss,
239: ROFF_sty,
240: ROFF_substring,
241: ROFF_sv,
242: ROFF_sy,
243: ROFF_T_,
1.31 schwarze 244: ROFF_ta,
1.123 schwarze 245: ROFF_tc,
246: ROFF_TE,
247: ROFF_TH,
248: ROFF_ti,
249: ROFF_tkf,
250: ROFF_tl,
251: ROFF_tm,
252: ROFF_tm1,
253: ROFF_tmc,
1.2 schwarze 254: ROFF_tr,
1.123 schwarze 255: ROFF_track,
256: ROFF_transchar,
257: ROFF_trf,
258: ROFF_trimat,
259: ROFF_trin,
260: ROFF_trnt,
261: ROFF_troff,
1.27 schwarze 262: ROFF_TS,
1.123 schwarze 263: ROFF_uf,
264: ROFF_ul,
265: ROFF_unformat,
266: ROFF_unwatch,
267: ROFF_unwatchn,
268: ROFF_vpt,
269: ROFF_vs,
270: ROFF_warn,
271: ROFF_warnscale,
272: ROFF_watch,
273: ROFF_watchlength,
274: ROFF_watchn,
275: ROFF_wh,
276: ROFF_while,
277: ROFF_write,
278: ROFF_writec,
279: ROFF_writem,
280: ROFF_xflag,
1.2 schwarze 281: ROFF_cblock,
1.16 schwarze 282: ROFF_USERDEF,
1.1 schwarze 283: ROFF_MAX
284: };
285:
1.41 schwarze 286: /*
1.42 schwarze 287: * An incredibly-simple string buffer.
288: */
1.8 schwarze 289: struct roffstr {
1.42 schwarze 290: char *p; /* nil-terminated buffer */
291: size_t sz; /* saved strlen(p) */
292: };
293:
294: /*
295: * A key-value roffstr pair as part of a singly-linked list.
296: */
297: struct roffkv {
298: struct roffstr key;
299: struct roffstr val;
300: struct roffkv *next; /* next in list */
1.8 schwarze 301: };
302:
1.52 schwarze 303: /*
304: * A single number register as part of a singly-linked list.
305: */
306: struct roffreg {
307: struct roffstr key;
1.53 schwarze 308: int val;
1.52 schwarze 309: struct roffreg *next;
310: };
311:
1.1 schwarze 312: struct roff {
1.35 schwarze 313: struct mparse *parse; /* parse point */
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 */
1.145 schwarze 332: int argc; /* number of args of the last macro */
1.96 schwarze 333: char control; /* control character */
1.1 schwarze 334: };
335:
336: struct roffnode {
337: enum rofft tok; /* type of node */
338: struct roffnode *parent; /* up one in stack */
339: int line; /* parse line */
340: int col; /* parse col */
1.16 schwarze 341: char *name; /* node name, e.g. macro name */
1.2 schwarze 342: char *end; /* end-rules: custom token */
343: int endspan; /* end-rules: next-line or infty */
1.71 schwarze 344: int rule; /* current evaluation rule */
1.1 schwarze 345: };
346:
347: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
348: enum rofft tok, /* tok of macro */ \
1.110 schwarze 349: struct buf *buf, /* input buffer */ \
1.1 schwarze 350: int ln, /* parse line */ \
1.2 schwarze 351: int ppos, /* original pos in buffer */ \
352: int pos, /* current pos in buffer */ \
353: int *offs /* reset offset of buffer data */
1.1 schwarze 354:
355: typedef enum rofferr (*roffproc)(ROFF_ARGS);
356:
357: struct roffmac {
358: const char *name; /* macro name */
1.2 schwarze 359: roffproc proc; /* process new macro */
360: roffproc text; /* process as child text of macro */
361: roffproc sub; /* process as child of macro */
362: int flags;
363: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.3 schwarze 364: struct roffmac *next;
1.1 schwarze 365: };
366:
1.37 schwarze 367: struct predef {
368: const char *name; /* predefined input name */
369: const char *str; /* replacement symbol */
370: };
371:
372: #define PREDEF(__name, __str) \
373: { (__name), (__str) },
374:
1.138 schwarze 375: /* --- function prototypes ------------------------------------------------ */
376:
1.42 schwarze 377: static enum rofft roffhash_find(const char *, size_t);
378: static void roffhash_init(void);
379: static void roffnode_cleanscope(struct roff *);
380: static void roffnode_pop(struct roff *);
381: static void roffnode_push(struct roff *, enum rofft,
382: const char *, int, int);
1.2 schwarze 383: static enum rofferr roff_block(ROFF_ARGS);
384: static enum rofferr roff_block_text(ROFF_ARGS);
385: static enum rofferr roff_block_sub(ROFF_ARGS);
1.123 schwarze 386: static enum rofferr roff_brp(ROFF_ARGS);
1.2 schwarze 387: static enum rofferr roff_cblock(ROFF_ARGS);
1.48 schwarze 388: static enum rofferr roff_cc(ROFF_ARGS);
1.68 schwarze 389: static void roff_ccond(struct roff *, int, int);
1.2 schwarze 390: static enum rofferr roff_cond(ROFF_ARGS);
391: static enum rofferr roff_cond_text(ROFF_ARGS);
392: static enum rofferr roff_cond_sub(ROFF_ARGS);
1.7 schwarze 393: static enum rofferr roff_ds(ROFF_ARGS);
1.110 schwarze 394: static enum rofferr roff_eqndelim(struct roff *, struct buf *, int);
1.143 schwarze 395: static int roff_evalcond(struct roff *r, int, char *, int *);
1.106 schwarze 396: static int roff_evalnum(struct roff *, int,
397: const char *, int *, int *, int);
398: static int roff_evalpar(struct roff *, int,
1.133 schwarze 399: const char *, int *, int *, int);
1.71 schwarze 400: static int roff_evalstrcond(const char *, int *);
1.42 schwarze 401: static void roff_free1(struct roff *);
1.52 schwarze 402: static void roff_freereg(struct roffreg *);
1.42 schwarze 403: static void roff_freestr(struct roffkv *);
1.85 schwarze 404: static size_t roff_getname(struct roff *, char **, int, int);
1.133 schwarze 405: static int roff_getnum(const char *, int *, int *, int);
1.56 schwarze 406: static int roff_getop(const char *, int *, char *);
1.53 schwarze 407: static int roff_getregn(const struct roff *,
408: const char *, size_t);
1.145 schwarze 409: static int roff_getregro(const struct roff *,
410: const char *name);
1.80 schwarze 411: static const char *roff_getstrn(const struct roff *,
1.8 schwarze 412: const char *, size_t);
1.143 schwarze 413: static int roff_hasregn(const struct roff *,
414: const char *, size_t);
1.123 schwarze 415: static enum rofferr roff_insec(ROFF_ARGS);
1.51 schwarze 416: static enum rofferr roff_it(ROFF_ARGS);
1.21 schwarze 417: static enum rofferr roff_line_ignore(ROFF_ARGS);
1.137 schwarze 418: static void roff_man_alloc1(struct roff_man *);
419: static void roff_man_free1(struct roff_man *);
1.6 schwarze 420: static enum rofferr roff_nr(ROFF_ARGS);
1.87 schwarze 421: static enum rofft roff_parse(struct roff *, char *, int *,
422: int, int);
1.110 schwarze 423: static enum rofferr roff_parsetext(struct buf *, int, int *);
424: static enum rofferr roff_res(struct roff *, struct buf *, int, int);
1.29 schwarze 425: static enum rofferr roff_rm(ROFF_ARGS);
1.76 schwarze 426: static enum rofferr roff_rr(ROFF_ARGS);
1.8 schwarze 427: static void roff_setstr(struct roff *,
1.16 schwarze 428: const char *, const char *, int);
1.80 schwarze 429: static void roff_setstrn(struct roffkv **, const char *,
1.42 schwarze 430: size_t, const char *, size_t, int);
1.14 schwarze 431: static enum rofferr roff_so(ROFF_ARGS);
1.42 schwarze 432: static enum rofferr roff_tr(ROFF_ARGS);
1.47 schwarze 433: static enum rofferr roff_Dd(ROFF_ARGS);
434: static enum rofferr roff_TH(ROFF_ARGS);
1.27 schwarze 435: static enum rofferr roff_TE(ROFF_ARGS);
436: static enum rofferr roff_TS(ROFF_ARGS);
1.32 schwarze 437: static enum rofferr roff_EQ(ROFF_ARGS);
438: static enum rofferr roff_EN(ROFF_ARGS);
1.27 schwarze 439: static enum rofferr roff_T_(ROFF_ARGS);
1.123 schwarze 440: static enum rofferr roff_unsupp(ROFF_ARGS);
1.16 schwarze 441: static enum rofferr roff_userdef(ROFF_ARGS);
1.1 schwarze 442:
1.138 schwarze 443: /* --- constant data ------------------------------------------------------ */
444:
1.42 schwarze 445: /* See roffhash_find() */
1.3 schwarze 446:
447: #define ASCII_HI 126
448: #define ASCII_LO 33
449: #define HASHWIDTH (ASCII_HI - ASCII_LO + 1)
450:
1.133 schwarze 451: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
452: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
453:
1.3 schwarze 454: static struct roffmac *hash[HASHWIDTH];
455:
456: static struct roffmac roffs[ROFF_MAX] = {
1.123 schwarze 457: { "ab", roff_unsupp, NULL, NULL, 0, NULL },
1.21 schwarze 458: { "ad", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 459: { "af", roff_line_ignore, NULL, NULL, 0, NULL },
460: { "aln", roff_unsupp, NULL, NULL, 0, NULL },
461: { "als", roff_unsupp, NULL, NULL, 0, NULL },
1.3 schwarze 462: { "am", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.123 schwarze 463: { "am1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.3 schwarze 464: { "ami", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.123 schwarze 465: { "ami1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.66 schwarze 466: { "as", roff_ds, NULL, NULL, 0, NULL },
1.123 schwarze 467: { "as1", roff_ds, NULL, NULL, 0, NULL },
468: { "asciify", roff_unsupp, NULL, NULL, 0, NULL },
469: { "backtrace", roff_line_ignore, NULL, NULL, 0, NULL },
470: { "bd", roff_line_ignore, NULL, NULL, 0, NULL },
471: { "bleedat", roff_line_ignore, NULL, NULL, 0, NULL },
472: { "blm", roff_unsupp, NULL, NULL, 0, NULL },
473: { "box", roff_unsupp, NULL, NULL, 0, NULL },
474: { "boxa", roff_unsupp, NULL, NULL, 0, NULL },
475: { "bp", roff_line_ignore, NULL, NULL, 0, NULL },
476: { "BP", roff_unsupp, NULL, NULL, 0, NULL },
477: { "break", roff_unsupp, NULL, NULL, 0, NULL },
478: { "breakchar", roff_line_ignore, NULL, NULL, 0, NULL },
479: { "brnl", roff_line_ignore, NULL, NULL, 0, NULL },
480: { "brp", roff_brp, NULL, NULL, 0, NULL },
481: { "brpnl", roff_line_ignore, NULL, NULL, 0, NULL },
482: { "c2", roff_unsupp, NULL, NULL, 0, NULL },
1.48 schwarze 483: { "cc", roff_cc, NULL, NULL, 0, NULL },
1.67 schwarze 484: { "ce", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 485: { "cf", roff_insec, NULL, NULL, 0, NULL },
486: { "cflags", roff_line_ignore, NULL, NULL, 0, NULL },
487: { "ch", roff_line_ignore, NULL, NULL, 0, NULL },
488: { "char", roff_unsupp, NULL, NULL, 0, NULL },
489: { "chop", roff_unsupp, NULL, NULL, 0, NULL },
490: { "class", roff_line_ignore, NULL, NULL, 0, NULL },
491: { "close", roff_insec, NULL, NULL, 0, NULL },
492: { "CL", roff_unsupp, NULL, NULL, 0, NULL },
493: { "color", roff_line_ignore, NULL, NULL, 0, NULL },
494: { "composite", roff_unsupp, NULL, NULL, 0, NULL },
495: { "continue", roff_unsupp, NULL, NULL, 0, NULL },
496: { "cp", roff_line_ignore, NULL, NULL, 0, NULL },
497: { "cropat", roff_line_ignore, NULL, NULL, 0, NULL },
498: { "cs", roff_line_ignore, NULL, NULL, 0, NULL },
499: { "cu", roff_line_ignore, NULL, NULL, 0, NULL },
500: { "da", roff_unsupp, NULL, NULL, 0, NULL },
501: { "dch", roff_unsupp, NULL, NULL, 0, NULL },
502: { "Dd", roff_Dd, NULL, NULL, 0, NULL },
1.3 schwarze 503: { "de", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.123 schwarze 504: { "de1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
505: { "defcolor", roff_line_ignore, NULL, NULL, 0, NULL },
1.3 schwarze 506: { "dei", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.123 schwarze 507: { "dei1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
508: { "device", roff_unsupp, NULL, NULL, 0, NULL },
509: { "devicem", roff_unsupp, NULL, NULL, 0, NULL },
510: { "di", roff_unsupp, NULL, NULL, 0, NULL },
511: { "do", roff_unsupp, NULL, NULL, 0, NULL },
1.7 schwarze 512: { "ds", roff_ds, NULL, NULL, 0, NULL },
1.123 schwarze 513: { "ds1", roff_ds, NULL, NULL, 0, NULL },
514: { "dwh", roff_unsupp, NULL, NULL, 0, NULL },
515: { "dt", roff_unsupp, NULL, NULL, 0, NULL },
516: { "ec", roff_unsupp, NULL, NULL, 0, NULL },
517: { "ecr", roff_unsupp, NULL, NULL, 0, NULL },
518: { "ecs", roff_unsupp, NULL, NULL, 0, NULL },
1.3 schwarze 519: { "el", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
1.123 schwarze 520: { "em", roff_unsupp, NULL, NULL, 0, NULL },
521: { "EN", roff_EN, NULL, NULL, 0, NULL },
522: { "eo", roff_unsupp, NULL, NULL, 0, NULL },
523: { "EP", roff_unsupp, NULL, NULL, 0, NULL },
524: { "EQ", roff_EQ, NULL, NULL, 0, NULL },
525: { "errprint", roff_line_ignore, NULL, NULL, 0, NULL },
526: { "ev", roff_unsupp, NULL, NULL, 0, NULL },
527: { "evc", roff_unsupp, NULL, NULL, 0, NULL },
528: { "ex", roff_unsupp, NULL, NULL, 0, NULL },
529: { "fallback", roff_line_ignore, NULL, NULL, 0, NULL },
1.58 schwarze 530: { "fam", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 531: { "fc", roff_unsupp, NULL, NULL, 0, NULL },
532: { "fchar", roff_unsupp, NULL, NULL, 0, NULL },
533: { "fcolor", roff_line_ignore, NULL, NULL, 0, NULL },
534: { "fdeferlig", roff_line_ignore, NULL, NULL, 0, NULL },
535: { "feature", roff_line_ignore, NULL, NULL, 0, NULL },
536: { "fkern", roff_line_ignore, NULL, NULL, 0, NULL },
537: { "fl", roff_line_ignore, NULL, NULL, 0, NULL },
538: { "flig", roff_line_ignore, NULL, NULL, 0, NULL },
539: { "fp", roff_line_ignore, NULL, NULL, 0, NULL },
540: { "fps", roff_line_ignore, NULL, NULL, 0, NULL },
541: { "fschar", roff_unsupp, NULL, NULL, 0, NULL },
542: { "fspacewidth", roff_line_ignore, NULL, NULL, 0, NULL },
543: { "fspecial", roff_line_ignore, NULL, NULL, 0, NULL },
544: { "ftr", roff_line_ignore, NULL, NULL, 0, NULL },
545: { "fzoom", roff_line_ignore, NULL, NULL, 0, NULL },
546: { "gcolor", roff_line_ignore, NULL, NULL, 0, NULL },
547: { "hc", roff_line_ignore, NULL, NULL, 0, NULL },
548: { "hcode", roff_line_ignore, NULL, NULL, 0, NULL },
549: { "hidechar", roff_line_ignore, NULL, NULL, 0, NULL },
550: { "hla", roff_line_ignore, NULL, NULL, 0, NULL },
551: { "hlm", roff_line_ignore, NULL, NULL, 0, NULL },
552: { "hpf", roff_line_ignore, NULL, NULL, 0, NULL },
553: { "hpfa", roff_line_ignore, NULL, NULL, 0, NULL },
554: { "hpfcode", roff_line_ignore, NULL, NULL, 0, NULL },
1.59 schwarze 555: { "hw", roff_line_ignore, NULL, NULL, 0, NULL },
1.21 schwarze 556: { "hy", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 557: { "hylang", roff_line_ignore, NULL, NULL, 0, NULL },
558: { "hylen", roff_line_ignore, NULL, NULL, 0, NULL },
559: { "hym", roff_line_ignore, NULL, NULL, 0, NULL },
560: { "hypp", roff_line_ignore, NULL, NULL, 0, NULL },
561: { "hys", roff_line_ignore, NULL, NULL, 0, NULL },
1.3 schwarze 562: { "ie", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
563: { "if", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
564: { "ig", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.123 schwarze 565: { "index", roff_unsupp, NULL, NULL, 0, NULL },
1.51 schwarze 566: { "it", roff_it, NULL, NULL, 0, NULL },
1.123 schwarze 567: { "itc", roff_unsupp, NULL, NULL, 0, NULL },
568: { "IX", roff_line_ignore, NULL, NULL, 0, NULL },
569: { "kern", roff_line_ignore, NULL, NULL, 0, NULL },
570: { "kernafter", roff_line_ignore, NULL, NULL, 0, NULL },
571: { "kernbefore", roff_line_ignore, NULL, NULL, 0, NULL },
572: { "kernpair", roff_line_ignore, NULL, NULL, 0, NULL },
573: { "lc", roff_unsupp, NULL, NULL, 0, NULL },
574: { "lc_ctype", roff_unsupp, NULL, NULL, 0, NULL },
575: { "lds", roff_unsupp, NULL, NULL, 0, NULL },
576: { "length", roff_unsupp, NULL, NULL, 0, NULL },
577: { "letadj", roff_line_ignore, NULL, NULL, 0, NULL },
578: { "lf", roff_insec, NULL, NULL, 0, NULL },
579: { "lg", roff_line_ignore, NULL, NULL, 0, NULL },
580: { "lhang", roff_line_ignore, NULL, NULL, 0, NULL },
581: { "linetabs", roff_unsupp, NULL, NULL, 0, NULL },
582: { "lnr", roff_unsupp, NULL, NULL, 0, NULL },
583: { "lnrf", roff_unsupp, NULL, NULL, 0, NULL },
584: { "lpfx", roff_unsupp, NULL, NULL, 0, NULL },
585: { "ls", roff_line_ignore, NULL, NULL, 0, NULL },
586: { "lsm", roff_unsupp, NULL, NULL, 0, NULL },
587: { "lt", roff_line_ignore, NULL, NULL, 0, NULL },
588: { "mc", roff_line_ignore, NULL, NULL, 0, NULL },
589: { "mediasize", roff_line_ignore, NULL, NULL, 0, NULL },
590: { "minss", roff_line_ignore, NULL, NULL, 0, NULL },
591: { "mk", roff_line_ignore, NULL, NULL, 0, NULL },
592: { "mso", roff_insec, NULL, NULL, 0, NULL },
1.128 schwarze 593: { "na", roff_line_ignore, NULL, NULL, 0, NULL },
1.21 schwarze 594: { "ne", roff_line_ignore, NULL, NULL, 0, NULL },
595: { "nh", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 596: { "nhychar", roff_line_ignore, NULL, NULL, 0, NULL },
597: { "nm", roff_unsupp, NULL, NULL, 0, NULL },
598: { "nn", roff_unsupp, NULL, NULL, 0, NULL },
599: { "nop", roff_unsupp, NULL, NULL, 0, NULL },
1.14 schwarze 600: { "nr", roff_nr, NULL, NULL, 0, NULL },
1.123 schwarze 601: { "nrf", roff_unsupp, NULL, NULL, 0, NULL },
602: { "nroff", roff_line_ignore, NULL, NULL, 0, NULL },
1.31 schwarze 603: { "ns", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 604: { "nx", roff_insec, NULL, NULL, 0, NULL },
605: { "open", roff_insec, NULL, NULL, 0, NULL },
606: { "opena", roff_insec, NULL, NULL, 0, NULL },
607: { "os", roff_line_ignore, NULL, NULL, 0, NULL },
608: { "output", roff_unsupp, NULL, NULL, 0, NULL },
609: { "padj", roff_line_ignore, NULL, NULL, 0, NULL },
610: { "papersize", roff_line_ignore, NULL, NULL, 0, NULL },
611: { "pc", roff_line_ignore, NULL, NULL, 0, NULL },
612: { "pev", roff_line_ignore, NULL, NULL, 0, NULL },
613: { "pi", roff_insec, NULL, NULL, 0, NULL },
614: { "PI", roff_unsupp, NULL, NULL, 0, NULL },
1.101 schwarze 615: { "pl", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 616: { "pm", roff_line_ignore, NULL, NULL, 0, NULL },
617: { "pn", roff_line_ignore, NULL, NULL, 0, NULL },
618: { "pnr", roff_line_ignore, NULL, NULL, 0, NULL },
619: { "po", roff_line_ignore, NULL, NULL, 0, NULL },
1.31 schwarze 620: { "ps", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 621: { "psbb", roff_unsupp, NULL, NULL, 0, NULL },
1.127 schwarze 622: { "pshape", roff_unsupp, NULL, NULL, 0, NULL },
1.123 schwarze 623: { "pso", roff_insec, NULL, NULL, 0, NULL },
624: { "ptr", roff_line_ignore, NULL, NULL, 0, NULL },
625: { "pvs", roff_line_ignore, NULL, NULL, 0, NULL },
626: { "rchar", roff_unsupp, NULL, NULL, 0, NULL },
627: { "rd", roff_line_ignore, NULL, NULL, 0, NULL },
628: { "recursionlimit", roff_line_ignore, NULL, NULL, 0, NULL },
629: { "return", roff_unsupp, NULL, NULL, 0, NULL },
630: { "rfschar", roff_unsupp, NULL, NULL, 0, NULL },
631: { "rhang", roff_line_ignore, NULL, NULL, 0, NULL },
632: { "rj", roff_line_ignore, NULL, NULL, 0, NULL },
1.29 schwarze 633: { "rm", roff_rm, NULL, NULL, 0, NULL },
1.123 schwarze 634: { "rn", roff_unsupp, NULL, NULL, 0, NULL },
635: { "rnn", roff_unsupp, NULL, NULL, 0, NULL },
1.76 schwarze 636: { "rr", roff_rr, NULL, NULL, 0, NULL },
1.123 schwarze 637: { "rs", roff_line_ignore, NULL, NULL, 0, NULL },
638: { "rt", roff_line_ignore, NULL, NULL, 0, NULL },
639: { "schar", roff_unsupp, NULL, NULL, 0, NULL },
640: { "sentchar", roff_line_ignore, NULL, NULL, 0, NULL },
641: { "shc", roff_line_ignore, NULL, NULL, 0, NULL },
642: { "shift", roff_unsupp, NULL, NULL, 0, NULL },
643: { "sizes", roff_line_ignore, NULL, NULL, 0, NULL },
1.14 schwarze 644: { "so", roff_so, NULL, NULL, 0, NULL },
1.123 schwarze 645: { "spacewidth", roff_line_ignore, NULL, NULL, 0, NULL },
646: { "special", roff_line_ignore, NULL, NULL, 0, NULL },
647: { "spreadwarn", roff_line_ignore, NULL, NULL, 0, NULL },
648: { "ss", roff_line_ignore, NULL, NULL, 0, NULL },
649: { "sty", roff_line_ignore, NULL, NULL, 0, NULL },
650: { "substring", roff_unsupp, NULL, NULL, 0, NULL },
651: { "sv", roff_line_ignore, NULL, NULL, 0, NULL },
652: { "sy", roff_insec, NULL, NULL, 0, NULL },
653: { "T&", roff_T_, NULL, NULL, 0, NULL },
1.127 schwarze 654: { "ta", roff_unsupp, NULL, NULL, 0, NULL },
1.123 schwarze 655: { "tc", roff_unsupp, NULL, NULL, 0, NULL },
656: { "TE", roff_TE, NULL, NULL, 0, NULL },
657: { "TH", roff_TH, NULL, NULL, 0, NULL },
1.127 schwarze 658: { "ti", roff_unsupp, NULL, NULL, 0, NULL },
1.123 schwarze 659: { "tkf", roff_line_ignore, NULL, NULL, 0, NULL },
660: { "tl", roff_unsupp, NULL, NULL, 0, NULL },
661: { "tm", roff_line_ignore, NULL, NULL, 0, NULL },
662: { "tm1", roff_line_ignore, NULL, NULL, 0, NULL },
663: { "tmc", roff_line_ignore, NULL, NULL, 0, NULL },
1.42 schwarze 664: { "tr", roff_tr, NULL, NULL, 0, NULL },
1.123 schwarze 665: { "track", roff_line_ignore, NULL, NULL, 0, NULL },
666: { "transchar", roff_line_ignore, NULL, NULL, 0, NULL },
667: { "trf", roff_insec, NULL, NULL, 0, NULL },
668: { "trimat", roff_line_ignore, NULL, NULL, 0, NULL },
669: { "trin", roff_unsupp, NULL, NULL, 0, NULL },
670: { "trnt", roff_unsupp, NULL, NULL, 0, NULL },
671: { "troff", roff_line_ignore, NULL, NULL, 0, NULL },
1.27 schwarze 672: { "TS", roff_TS, NULL, NULL, 0, NULL },
1.123 schwarze 673: { "uf", roff_line_ignore, NULL, NULL, 0, NULL },
674: { "ul", roff_line_ignore, NULL, NULL, 0, NULL },
675: { "unformat", roff_unsupp, NULL, NULL, 0, NULL },
676: { "unwatch", roff_line_ignore, NULL, NULL, 0, NULL },
677: { "unwatchn", roff_line_ignore, NULL, NULL, 0, NULL },
678: { "vpt", roff_line_ignore, NULL, NULL, 0, NULL },
679: { "vs", roff_line_ignore, NULL, NULL, 0, NULL },
680: { "warn", roff_line_ignore, NULL, NULL, 0, NULL },
681: { "warnscale", roff_line_ignore, NULL, NULL, 0, NULL },
682: { "watch", roff_line_ignore, NULL, NULL, 0, NULL },
683: { "watchlength", roff_line_ignore, NULL, NULL, 0, NULL },
684: { "watchn", roff_line_ignore, NULL, NULL, 0, NULL },
685: { "wh", roff_unsupp, NULL, NULL, 0, NULL },
686: { "while", roff_unsupp, NULL, NULL, 0, NULL },
687: { "write", roff_insec, NULL, NULL, 0, NULL },
688: { "writec", roff_insec, NULL, NULL, 0, NULL },
689: { "writem", roff_insec, NULL, NULL, 0, NULL },
690: { "xflag", roff_line_ignore, NULL, NULL, 0, NULL },
1.3 schwarze 691: { ".", roff_cblock, NULL, NULL, 0, NULL },
1.16 schwarze 692: { NULL, roff_userdef, NULL, NULL, 0, NULL },
1.1 schwarze 693: };
694:
1.73 schwarze 695: /* not currently implemented: Ds em Eq LP Me PP pp Or Rd Sf SH */
1.47 schwarze 696: const char *const __mdoc_reserved[] = {
697: "Ac", "Ad", "An", "Ao", "Ap", "Aq", "Ar", "At",
698: "Bc", "Bd", "Bf", "Bk", "Bl", "Bo", "Bq",
699: "Brc", "Bro", "Brq", "Bsx", "Bt", "Bx",
700: "Cd", "Cm", "Db", "Dc", "Dd", "Dl", "Do", "Dq",
1.73 schwarze 701: "Dt", "Dv", "Dx", "D1",
702: "Ec", "Ed", "Ef", "Ek", "El", "Em",
703: "En", "Eo", "Er", "Es", "Ev", "Ex",
1.47 schwarze 704: "Fa", "Fc", "Fd", "Fl", "Fn", "Fo", "Fr", "Ft", "Fx",
1.73 schwarze 705: "Hf", "Ic", "In", "It", "Lb", "Li", "Lk", "Lp",
706: "Ms", "Mt", "Nd", "Nm", "No", "Ns", "Nx",
1.47 schwarze 707: "Oc", "Oo", "Op", "Os", "Ot", "Ox",
1.73 schwarze 708: "Pa", "Pc", "Pf", "Po", "Pp", "Pq",
709: "Qc", "Ql", "Qo", "Qq", "Re", "Rs", "Rv",
710: "Sc", "Sh", "Sm", "So", "Sq",
1.47 schwarze 711: "Ss", "St", "Sx", "Sy",
712: "Ta", "Tn", "Ud", "Ux", "Va", "Vt", "Xc", "Xo", "Xr",
1.73 schwarze 713: "%A", "%B", "%C", "%D", "%I", "%J", "%N", "%O",
1.47 schwarze 714: "%P", "%Q", "%R", "%T", "%U", "%V",
715: NULL
716: };
717:
1.73 schwarze 718: /* not currently implemented: BT DE DS ME MT PT SY TQ YS */
1.47 schwarze 719: const char *const __man_reserved[] = {
1.73 schwarze 720: "AT", "B", "BI", "BR", "DT",
721: "EE", "EN", "EQ", "EX", "HP", "I", "IB", "IP", "IR",
722: "LP", "OP", "P", "PD", "PP",
723: "R", "RB", "RE", "RI", "RS", "SB", "SH", "SM", "SS",
724: "TE", "TH", "TP", "TS", "T&", "UC", "UE", "UR",
1.47 schwarze 725: NULL
726: };
727:
1.37 schwarze 728: /* Array of injected predefined strings. */
729: #define PREDEFS_MAX 38
730: static const struct predef predefs[PREDEFS_MAX] = {
731: #include "predefs.in"
732: };
733:
1.42 schwarze 734: /* See roffhash_find() */
1.3 schwarze 735: #define ROFF_HASH(p) (p[0] - ASCII_LO)
736:
1.51 schwarze 737: static int roffit_lines; /* number of lines to delay */
738: static char *roffit_macro; /* nil-terminated macro line */
739:
1.80 schwarze 740:
1.138 schwarze 741: /* --- request table ------------------------------------------------------ */
742:
1.3 schwarze 743: static void
1.42 schwarze 744: roffhash_init(void)
1.3 schwarze 745: {
746: struct roffmac *n;
747: int buc, i;
748:
1.16 schwarze 749: for (i = 0; i < (int)ROFF_USERDEF; i++) {
1.3 schwarze 750: assert(roffs[i].name[0] >= ASCII_LO);
751: assert(roffs[i].name[0] <= ASCII_HI);
752:
753: buc = ROFF_HASH(roffs[i].name);
754:
755: if (NULL != (n = hash[buc])) {
756: for ( ; n->next; n = n->next)
757: /* Do nothing. */ ;
758: n->next = &roffs[i];
759: } else
760: hash[buc] = &roffs[i];
761: }
762: }
763:
1.1 schwarze 764: /*
765: * Look up a roff token by its name. Returns ROFF_MAX if no macro by
766: * the nil-terminated string name could be found.
767: */
768: static enum rofft
1.42 schwarze 769: roffhash_find(const char *p, size_t s)
1.1 schwarze 770: {
1.3 schwarze 771: int buc;
772: struct roffmac *n;
1.1 schwarze 773:
1.3 schwarze 774: /*
775: * libroff has an extremely simple hashtable, for the time
776: * being, which simply keys on the first character, which must
777: * be printable, then walks a chain. It works well enough until
778: * optimised.
779: */
780:
781: if (p[0] < ASCII_LO || p[0] > ASCII_HI)
1.149 schwarze 782: return ROFF_MAX;
1.3 schwarze 783:
784: buc = ROFF_HASH(p);
785:
786: if (NULL == (n = hash[buc]))
1.149 schwarze 787: return ROFF_MAX;
1.3 schwarze 788: for ( ; n; n = n->next)
1.16 schwarze 789: if (0 == strncmp(n->name, p, s) && '\0' == n->name[(int)s])
1.149 schwarze 790: return (enum rofft)(n - roffs);
1.1 schwarze 791:
1.149 schwarze 792: return ROFF_MAX;
1.1 schwarze 793: }
794:
1.138 schwarze 795: /* --- stack of request blocks -------------------------------------------- */
796:
1.1 schwarze 797: /*
798: * Pop the current node off of the stack of roff instructions currently
799: * pending.
800: */
801: static void
802: roffnode_pop(struct roff *r)
803: {
804: struct roffnode *p;
805:
1.2 schwarze 806: assert(r->last);
1.80 schwarze 807: p = r->last;
1.2 schwarze 808:
809: r->last = r->last->parent;
1.16 schwarze 810: free(p->name);
811: free(p->end);
1.1 schwarze 812: free(p);
813: }
814:
815: /*
816: * Push a roff node onto the instruction stack. This must later be
817: * removed with roffnode_pop().
818: */
1.11 schwarze 819: static void
1.16 schwarze 820: roffnode_push(struct roff *r, enum rofft tok, const char *name,
821: int line, int col)
1.1 schwarze 822: {
823: struct roffnode *p;
824:
1.11 schwarze 825: p = mandoc_calloc(1, sizeof(struct roffnode));
1.1 schwarze 826: p->tok = tok;
1.16 schwarze 827: if (name)
828: p->name = mandoc_strdup(name);
1.1 schwarze 829: p->parent = r->last;
830: p->line = line;
831: p->col = col;
1.71 schwarze 832: p->rule = p->parent ? p->parent->rule : 0;
1.1 schwarze 833:
834: r->last = p;
835: }
836:
1.138 schwarze 837: /* --- roff parser state data management ---------------------------------- */
838:
1.1 schwarze 839: static void
840: roff_free1(struct roff *r)
841: {
1.49 schwarze 842: struct tbl_node *tbl;
1.32 schwarze 843: struct eqn_node *e;
1.42 schwarze 844: int i;
1.27 schwarze 845:
1.49 schwarze 846: while (NULL != (tbl = r->first_tbl)) {
847: r->first_tbl = tbl->next;
848: tbl_free(tbl);
1.27 schwarze 849: }
850: r->first_tbl = r->last_tbl = r->tbl = NULL;
1.1 schwarze 851:
1.32 schwarze 852: while (NULL != (e = r->first_eqn)) {
853: r->first_eqn = e->next;
854: eqn_free(e);
855: }
856: r->first_eqn = r->last_eqn = r->eqn = NULL;
857:
1.1 schwarze 858: while (r->last)
859: roffnode_pop(r);
1.27 schwarze 860:
1.96 schwarze 861: free (r->rstack);
862: r->rstack = NULL;
863: r->rstacksz = 0;
864: r->rstackpos = -1;
865:
866: roff_freereg(r->regtab);
867: r->regtab = NULL;
868:
1.42 schwarze 869: roff_freestr(r->strtab);
870: roff_freestr(r->xmbtab);
871: r->strtab = r->xmbtab = NULL;
872:
873: if (r->xtab)
874: for (i = 0; i < 128; i++)
875: free(r->xtab[i].p);
876: free(r->xtab);
877: r->xtab = NULL;
1.1 schwarze 878: }
879:
880: void
881: roff_reset(struct roff *r)
882: {
883:
884: roff_free1(r);
1.99 schwarze 885: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.48 schwarze 886: r->control = 0;
1.1 schwarze 887: }
888:
889: void
890: roff_free(struct roff *r)
891: {
892:
893: roff_free1(r);
894: free(r);
895: }
896:
897: struct roff *
1.151 schwarze 898: roff_alloc(struct mparse *parse, int options)
1.1 schwarze 899: {
900: struct roff *r;
901:
1.11 schwarze 902: r = mandoc_calloc(1, sizeof(struct roff));
1.35 schwarze 903: r->parse = parse;
1.72 schwarze 904: r->options = options;
1.99 schwarze 905: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.2 schwarze 906: r->rstackpos = -1;
1.80 schwarze 907:
1.42 schwarze 908: roffhash_init();
1.37 schwarze 909:
1.149 schwarze 910: return r;
1.137 schwarze 911: }
912:
1.138 schwarze 913: /* --- syntax tree state data management ---------------------------------- */
914:
1.137 schwarze 915: static void
916: roff_man_free1(struct roff_man *man)
917: {
918:
1.138 schwarze 919: if (man->first != NULL)
920: roff_node_delete(man, man->first);
1.137 schwarze 921: free(man->meta.msec);
922: free(man->meta.vol);
923: free(man->meta.os);
924: free(man->meta.arch);
925: free(man->meta.title);
926: free(man->meta.name);
927: free(man->meta.date);
928: }
929:
930: static void
931: roff_man_alloc1(struct roff_man *man)
932: {
933:
934: memset(&man->meta, 0, sizeof(man->meta));
935: man->first = mandoc_calloc(1, sizeof(*man->first));
936: man->first->type = ROFFT_ROOT;
937: man->last = man->first;
938: man->last_es = NULL;
939: man->flags = 0;
940: man->macroset = MACROSET_NONE;
941: man->lastsec = man->lastnamed = SEC_NONE;
942: man->next = ROFF_NEXT_CHILD;
943: }
944:
945: void
946: roff_man_reset(struct roff_man *man)
947: {
948:
949: roff_man_free1(man);
950: roff_man_alloc1(man);
951: }
952:
953: void
954: roff_man_free(struct roff_man *man)
955: {
956:
957: roff_man_free1(man);
958: free(man);
959: }
960:
961: struct roff_man *
962: roff_man_alloc(struct roff *roff, struct mparse *parse,
963: const char *defos, int quick)
964: {
965: struct roff_man *man;
966:
967: man = mandoc_calloc(1, sizeof(*man));
968: man->parse = parse;
969: man->roff = roff;
970: man->defos = defos;
971: man->quick = quick;
972: roff_man_alloc1(man);
1.149 schwarze 973: return man;
1.1 schwarze 974: }
975:
1.138 schwarze 976: /* --- syntax tree handling ----------------------------------------------- */
977:
978: struct roff_node *
979: roff_node_alloc(struct roff_man *man, int line, int pos,
980: enum roff_type type, int tok)
981: {
982: struct roff_node *n;
983:
984: n = mandoc_calloc(1, sizeof(*n));
985: n->line = line;
986: n->pos = pos;
987: n->tok = tok;
988: n->type = type;
989: n->sec = man->lastsec;
990:
991: if (man->flags & MDOC_SYNOPSIS)
992: n->flags |= MDOC_SYNPRETTY;
993: else
994: n->flags &= ~MDOC_SYNPRETTY;
995: if (man->flags & MDOC_NEWLINE)
996: n->flags |= MDOC_LINE;
997: man->flags &= ~MDOC_NEWLINE;
998:
1.149 schwarze 999: return n;
1.138 schwarze 1000: }
1001:
1002: void
1003: roff_node_append(struct roff_man *man, struct roff_node *n)
1004: {
1005:
1006: switch (man->next) {
1007: case ROFF_NEXT_SIBLING:
1008: man->last->next = n;
1009: n->prev = man->last;
1010: n->parent = man->last->parent;
1011: break;
1012: case ROFF_NEXT_CHILD:
1013: man->last->child = n;
1014: n->parent = man->last;
1015: break;
1016: default:
1017: abort();
1018: }
1019: n->parent->nchild++;
1.142 schwarze 1020: n->parent->last = n;
1.138 schwarze 1021:
1022: /*
1023: * Copy over the normalised-data pointer of our parent. Not
1024: * everybody has one, but copying a null pointer is fine.
1025: */
1026:
1027: switch (n->type) {
1028: case ROFFT_BODY:
1029: if (n->end != ENDBODY_NOT)
1030: break;
1031: /* FALLTHROUGH */
1032: case ROFFT_TAIL:
1033: case ROFFT_HEAD:
1034: n->norm = n->parent->norm;
1035: break;
1036: default:
1037: break;
1038: }
1039:
1040: if (man->macroset == MACROSET_MDOC)
1041: mdoc_valid_pre(man, n);
1042:
1043: switch (n->type) {
1044: case ROFFT_HEAD:
1045: assert(n->parent->type == ROFFT_BLOCK);
1046: n->parent->head = n;
1047: break;
1048: case ROFFT_BODY:
1049: if (n->end)
1050: break;
1051: assert(n->parent->type == ROFFT_BLOCK);
1052: n->parent->body = n;
1053: break;
1054: case ROFFT_TAIL:
1055: assert(n->parent->type == ROFFT_BLOCK);
1056: n->parent->tail = n;
1057: break;
1058: default:
1059: break;
1060: }
1061: man->last = n;
1062: }
1063:
1.139 schwarze 1064: void
1065: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
1066: {
1067: struct roff_node *n;
1068:
1069: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
1070: n->string = roff_strdup(man->roff, word);
1071: roff_node_append(man, n);
1072: if (man->macroset == MACROSET_MDOC)
1073: mdoc_valid_post(man);
1074: else
1075: man_valid_post(man);
1076: man->next = ROFF_NEXT_SIBLING;
1077: }
1078:
1079: void
1080: roff_word_append(struct roff_man *man, const char *word)
1081: {
1082: struct roff_node *n;
1083: char *addstr, *newstr;
1084:
1085: n = man->last;
1086: addstr = roff_strdup(man->roff, word);
1087: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
1088: free(addstr);
1089: free(n->string);
1090: n->string = newstr;
1091: man->next = ROFF_NEXT_SIBLING;
1.140 schwarze 1092: }
1093:
1094: void
1095: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
1096: {
1097: struct roff_node *n;
1098:
1099: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
1100: roff_node_append(man, n);
1101: man->next = ROFF_NEXT_CHILD;
1102: }
1103:
1104: struct roff_node *
1105: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
1106: {
1107: struct roff_node *n;
1108:
1109: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
1110: roff_node_append(man, n);
1111: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 1112: return n;
1.139 schwarze 1113: }
1114:
1.138 schwarze 1115: struct roff_node *
1116: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
1117: {
1118: struct roff_node *n;
1119:
1120: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
1121: roff_node_append(man, n);
1122: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 1123: return n;
1.138 schwarze 1124: }
1125:
1126: struct roff_node *
1127: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1128: {
1129: struct roff_node *n;
1130:
1131: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1132: roff_node_append(man, n);
1133: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 1134: return n;
1.139 schwarze 1135: }
1136:
1137: void
1138: roff_addeqn(struct roff_man *man, const struct eqn *eqn)
1139: {
1140: struct roff_node *n;
1141:
1142: n = roff_node_alloc(man, eqn->ln, eqn->pos, ROFFT_EQN, TOKEN_NONE);
1143: n->eqn = eqn;
1144: if (eqn->ln > man->last->line)
1145: n->flags |= MDOC_LINE;
1146: roff_node_append(man, n);
1147: man->next = ROFF_NEXT_SIBLING;
1148: }
1149:
1150: void
1151: roff_addtbl(struct roff_man *man, const struct tbl_span *tbl)
1152: {
1153: struct roff_node *n;
1154:
1155: if (man->macroset == MACROSET_MAN)
1156: man_breakscope(man, TOKEN_NONE);
1157: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
1158: n->span = tbl;
1159: roff_node_append(man, n);
1160: if (man->macroset == MACROSET_MDOC)
1161: mdoc_valid_post(man);
1162: else
1163: man_valid_post(man);
1164: man->next = ROFF_NEXT_SIBLING;
1.138 schwarze 1165: }
1166:
1167: void
1168: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1169: {
1170:
1171: /* Adjust siblings. */
1172:
1173: if (n->prev)
1174: n->prev->next = n->next;
1175: if (n->next)
1176: n->next->prev = n->prev;
1177:
1178: /* Adjust parent. */
1179:
1180: if (n->parent != NULL) {
1181: n->parent->nchild--;
1182: if (n->parent->child == n)
1183: n->parent->child = n->next;
1184: if (n->parent->last == n)
1185: n->parent->last = n->prev;
1186: }
1187:
1188: /* Adjust parse point. */
1189:
1190: if (man == NULL)
1191: return;
1192: if (man->last == n) {
1193: if (n->prev == NULL) {
1194: man->last = n->parent;
1195: man->next = ROFF_NEXT_CHILD;
1196: } else {
1197: man->last = n->prev;
1198: man->next = ROFF_NEXT_SIBLING;
1199: }
1200: }
1201: if (man->first == n)
1202: man->first = NULL;
1203: }
1204:
1205: void
1206: roff_node_free(struct roff_node *n)
1207: {
1208:
1209: if (n->args != NULL)
1210: mdoc_argv_free(n->args);
1211: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1212: free(n->norm);
1213: free(n->string);
1214: free(n);
1215: }
1216:
1217: void
1218: roff_node_delete(struct roff_man *man, struct roff_node *n)
1219: {
1220:
1221: while (n->child != NULL)
1222: roff_node_delete(man, n->child);
1223: assert(n->nchild == 0);
1224: roff_node_unlink(man, n);
1225: roff_node_free(n);
1.141 schwarze 1226: }
1227:
1228: void
1229: deroff(char **dest, const struct roff_node *n)
1230: {
1231: char *cp;
1232: size_t sz;
1233:
1234: if (n->type != ROFFT_TEXT) {
1235: for (n = n->child; n != NULL; n = n->next)
1236: deroff(dest, n);
1237: return;
1238: }
1239:
1240: /* Skip leading whitespace and escape sequences. */
1241:
1242: cp = n->string;
1243: while (*cp != '\0') {
1244: if ('\\' == *cp) {
1245: cp++;
1246: mandoc_escape((const char **)&cp, NULL, NULL);
1247: } else if (isspace((unsigned char)*cp))
1248: cp++;
1249: else
1250: break;
1251: }
1252:
1253: /* Skip trailing whitespace. */
1254:
1255: for (sz = strlen(cp); sz; sz--)
1256: if ( ! isspace((unsigned char)cp[sz-1]))
1257: break;
1258:
1259: /* Skip empty strings. */
1260:
1261: if (sz == 0)
1262: return;
1263:
1264: if (*dest == NULL) {
1265: *dest = mandoc_strndup(cp, sz);
1266: return;
1267: }
1268:
1269: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1270: free(*dest);
1271: *dest = cp;
1.138 schwarze 1272: }
1273:
1274: /* --- main functions of the roff parser ---------------------------------- */
1275:
1.8 schwarze 1276: /*
1.79 schwarze 1277: * In the current line, expand escape sequences that tend to get
1278: * used in numerical expressions and conditional requests.
1279: * Also check the syntax of the remaining escape sequences.
1.8 schwarze 1280: */
1.45 schwarze 1281: static enum rofferr
1.110 schwarze 1282: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.8 schwarze 1283: {
1.81 schwarze 1284: char ubuf[24]; /* buffer to print the number */
1.78 schwarze 1285: const char *start; /* start of the string to process */
1.82 schwarze 1286: char *stesc; /* start of an escape sequence ('\\') */
1.23 schwarze 1287: const char *stnam; /* start of the name, after "[(*" */
1288: const char *cp; /* end of the name, e.g. before ']' */
1289: const char *res; /* the string to be substituted */
1.110 schwarze 1290: char *nbuf; /* new buffer to copy buf->buf to */
1.53 schwarze 1291: size_t maxl; /* expected length of the escape name */
1292: size_t naml; /* actual length of the escape name */
1.109 schwarze 1293: enum mandoc_esc esc; /* type of the escape sequence */
1294: int inaml; /* length returned from mandoc_escape() */
1.53 schwarze 1295: int expand_count; /* to avoid infinite loops */
1.79 schwarze 1296: int npos; /* position in numeric expression */
1.91 schwarze 1297: int arg_complete; /* argument not interrupted by eol */
1.79 schwarze 1298: char term; /* character terminating the escape */
1.8 schwarze 1299:
1.43 schwarze 1300: expand_count = 0;
1.110 schwarze 1301: start = buf->buf + pos;
1.78 schwarze 1302: stesc = strchr(start, '\0') - 1;
1303: while (stesc-- > start) {
1.43 schwarze 1304:
1.78 schwarze 1305: /* Search backwards for the next backslash. */
1306:
1.110 schwarze 1307: if (*stesc != '\\')
1.78 schwarze 1308: continue;
1309:
1310: /* If it is escaped, skip it. */
1311:
1312: for (cp = stesc - 1; cp >= start; cp--)
1.110 schwarze 1313: if (*cp != '\\')
1.78 schwarze 1314: break;
1315:
1.110 schwarze 1316: if ((stesc - cp) % 2 == 0) {
1.82 schwarze 1317: stesc = (char *)cp;
1.78 schwarze 1318: continue;
1319: }
1.23 schwarze 1320:
1.79 schwarze 1321: /* Decide whether to expand or to check only. */
1.23 schwarze 1322:
1.79 schwarze 1323: term = '\0';
1.78 schwarze 1324: cp = stesc + 1;
1.53 schwarze 1325: switch (*cp) {
1.80 schwarze 1326: case '*':
1.53 schwarze 1327: res = NULL;
1328: break;
1.80 schwarze 1329: case 'B':
1330: case 'w':
1.79 schwarze 1331: term = cp[1];
1332: /* FALLTHROUGH */
1.80 schwarze 1333: case 'n':
1.53 schwarze 1334: res = ubuf;
1335: break;
1336: default:
1.109 schwarze 1337: esc = mandoc_escape(&cp, &stnam, &inaml);
1338: if (esc == ESCAPE_ERROR ||
1339: (esc == ESCAPE_SPECIAL &&
1.151 schwarze 1340: mchars_spec2cp(stnam, inaml) < 0))
1.92 schwarze 1341: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.110 schwarze 1342: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1343: "%.*s", (int)(cp - stesc), stesc);
1.78 schwarze 1344: continue;
1.42 schwarze 1345: }
1346:
1.78 schwarze 1347: if (EXPAND_LIMIT < ++expand_count) {
1348: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.110 schwarze 1349: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1350: return ROFF_IGN;
1.78 schwarze 1351: }
1.23 schwarze 1352:
1353: /*
1354: * The third character decides the length
1.53 schwarze 1355: * of the name of the string or register.
1.23 schwarze 1356: * Save a pointer to the name.
1357: */
1358:
1.110 schwarze 1359: if (term == '\0') {
1.79 schwarze 1360: switch (*++cp) {
1.80 schwarze 1361: case '\0':
1.79 schwarze 1362: maxl = 0;
1363: break;
1.80 schwarze 1364: case '(':
1.79 schwarze 1365: cp++;
1366: maxl = 2;
1367: break;
1.80 schwarze 1368: case '[':
1.79 schwarze 1369: cp++;
1370: term = ']';
1371: maxl = 0;
1372: break;
1373: default:
1374: maxl = 1;
1375: break;
1376: }
1377: } else {
1378: cp += 2;
1.8 schwarze 1379: maxl = 0;
1380: }
1.23 schwarze 1381: stnam = cp;
1.8 schwarze 1382:
1.23 schwarze 1383: /* Advance to the end of the name. */
1.8 schwarze 1384:
1.125 schwarze 1385: naml = 0;
1.91 schwarze 1386: arg_complete = 1;
1.125 schwarze 1387: while (maxl == 0 || naml < maxl) {
1.110 schwarze 1388: if (*cp == '\0') {
1.92 schwarze 1389: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 1390: ln, (int)(stesc - buf->buf), stesc);
1.91 schwarze 1391: arg_complete = 0;
1.79 schwarze 1392: break;
1.42 schwarze 1393: }
1.110 schwarze 1394: if (maxl == 0 && *cp == term) {
1.79 schwarze 1395: cp++;
1.125 schwarze 1396: break;
1397: }
1398: if (*cp++ != '\\' || stesc[1] != 'w') {
1399: naml++;
1400: continue;
1401: }
1402: switch (mandoc_escape(&cp, NULL, NULL)) {
1403: case ESCAPE_SPECIAL:
1404: case ESCAPE_UNICODE:
1405: case ESCAPE_NUMBERED:
1406: case ESCAPE_OVERSTRIKE:
1407: naml++;
1408: break;
1409: default:
1.8 schwarze 1410: break;
1.79 schwarze 1411: }
1.8 schwarze 1412: }
1413:
1.23 schwarze 1414: /*
1415: * Retrieve the replacement string; if it is
1416: * undefined, resume searching for escapes.
1417: */
1418:
1.79 schwarze 1419: switch (stesc[1]) {
1.80 schwarze 1420: case '*':
1.91 schwarze 1421: if (arg_complete)
1422: res = roff_getstrn(r, stnam, naml);
1.79 schwarze 1423: break;
1.80 schwarze 1424: case 'B':
1.79 schwarze 1425: npos = 0;
1.91 schwarze 1426: ubuf[0] = arg_complete &&
1.133 schwarze 1427: roff_evalnum(r, ln, stnam, &npos,
1428: NULL, ROFFNUM_SCALE) &&
1.91 schwarze 1429: stnam + npos + 1 == cp ? '1' : '0';
1.79 schwarze 1430: ubuf[1] = '\0';
1431: break;
1.80 schwarze 1432: case 'n':
1.91 schwarze 1433: if (arg_complete)
1434: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1435: roff_getregn(r, stnam, naml));
1436: else
1437: ubuf[0] = '\0';
1.79 schwarze 1438: break;
1.80 schwarze 1439: case 'w':
1.91 schwarze 1440: /* use even incomplete args */
1.81 schwarze 1441: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.79 schwarze 1442: 24 * (int)naml);
1443: break;
1444: }
1.8 schwarze 1445:
1.110 schwarze 1446: if (res == NULL) {
1.92 schwarze 1447: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1448: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1449: "%.*s", (int)naml, stnam);
1.37 schwarze 1450: res = "";
1.118 schwarze 1451: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1452: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1453: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1454: return ROFF_IGN;
1.8 schwarze 1455: }
1456:
1.23 schwarze 1457: /* Replace the escape sequence by the string. */
1458:
1.82 schwarze 1459: *stesc = '\0';
1.110 schwarze 1460: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1461: buf->buf, res, cp) + 1;
1.8 schwarze 1462:
1.78 schwarze 1463: /* Prepare for the next replacement. */
1.8 schwarze 1464:
1.78 schwarze 1465: start = nbuf + pos;
1.110 schwarze 1466: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1467: free(buf->buf);
1468: buf->buf = nbuf;
1.42 schwarze 1469: }
1.149 schwarze 1470: return ROFF_CONT;
1.42 schwarze 1471: }
1472:
1473: /*
1.147 schwarze 1474: * Process text streams.
1.42 schwarze 1475: */
1476: static enum rofferr
1.110 schwarze 1477: roff_parsetext(struct buf *buf, int pos, int *offs)
1.42 schwarze 1478: {
1479: size_t sz;
1480: const char *start;
1.51 schwarze 1481: char *p;
1482: int isz;
1.42 schwarze 1483: enum mandoc_esc esc;
1484:
1.147 schwarze 1485: /* Spring the input line trap. */
1486:
1487: if (roffit_lines == 1) {
1488: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1489: free(buf->buf);
1490: buf->buf = p;
1491: buf->sz = isz + 1;
1492: *offs = 0;
1493: free(roffit_macro);
1494: roffit_lines = 0;
1.149 schwarze 1495: return ROFF_REPARSE;
1.147 schwarze 1496: } else if (roffit_lines > 1)
1497: --roffit_lines;
1498:
1499: /* Convert all breakable hyphens into ASCII_HYPH. */
1500:
1.110 schwarze 1501: start = p = buf->buf + pos;
1.42 schwarze 1502:
1.110 schwarze 1503: while (*p != '\0') {
1.42 schwarze 1504: sz = strcspn(p, "-\\");
1505: p += sz;
1506:
1.110 schwarze 1507: if (*p == '\0')
1.42 schwarze 1508: break;
1509:
1.110 schwarze 1510: if (*p == '\\') {
1.42 schwarze 1511: /* Skip over escapes. */
1512: p++;
1.62 schwarze 1513: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.110 schwarze 1514: if (esc == ESCAPE_ERROR)
1.42 schwarze 1515: break;
1.136 schwarze 1516: while (*p == '-')
1517: p++;
1.42 schwarze 1518: continue;
1519: } else if (p == start) {
1520: p++;
1521: continue;
1522: }
1523:
1.44 schwarze 1524: if (isalpha((unsigned char)p[-1]) &&
1525: isalpha((unsigned char)p[1]))
1.42 schwarze 1526: *p = ASCII_HYPH;
1527: p++;
1.8 schwarze 1528: }
1.149 schwarze 1529: return ROFF_CONT;
1.8 schwarze 1530: }
1531:
1.1 schwarze 1532: enum rofferr
1.110 schwarze 1533: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.1 schwarze 1534: {
1535: enum rofft t;
1.27 schwarze 1536: enum rofferr e;
1.110 schwarze 1537: int pos; /* parse point */
1.115 schwarze 1538: int spos; /* saved parse point for messages */
1.110 schwarze 1539: int ppos; /* original offset in buf->buf */
1540: int ctl; /* macro line (boolean) */
1541:
1542: ppos = pos = *offs;
1.1 schwarze 1543:
1.102 schwarze 1544: /* Handle in-line equation delimiters. */
1545:
1.108 schwarze 1546: if (r->tbl == NULL &&
1547: r->last_eqn != NULL && r->last_eqn->delim &&
1.102 schwarze 1548: (r->eqn == NULL || r->eqn_inline)) {
1.110 schwarze 1549: e = roff_eqndelim(r, buf, pos);
1.102 schwarze 1550: if (e == ROFF_REPARSE)
1.149 schwarze 1551: return e;
1.102 schwarze 1552: assert(e == ROFF_CONT);
1553: }
1554:
1555: /* Expand some escape sequences. */
1.8 schwarze 1556:
1.110 schwarze 1557: e = roff_res(r, buf, ln, pos);
1558: if (e == ROFF_IGN)
1.149 schwarze 1559: return e;
1.110 schwarze 1560: assert(e == ROFF_CONT);
1.8 schwarze 1561:
1.110 schwarze 1562: ctl = roff_getcontrol(r, buf->buf, &pos);
1.35 schwarze 1563:
1.8 schwarze 1564: /*
1.2 schwarze 1565: * First, if a scope is open and we're not a macro, pass the
1.124 schwarze 1566: * text through the macro's filter.
1567: * Equations process all content themselves.
1568: * Tables process almost all content themselves, but we want
1569: * to warn about macros before passing it there.
1.2 schwarze 1570: */
1571:
1.124 schwarze 1572: if (r->last != NULL && ! ctl) {
1.2 schwarze 1573: t = r->last->tok;
1574: assert(roffs[t].text);
1.110 schwarze 1575: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1576: assert(e == ROFF_IGN || e == ROFF_CONT);
1577: if (e != ROFF_CONT)
1.149 schwarze 1578: return e;
1.54 schwarze 1579: }
1.124 schwarze 1580: if (r->eqn != NULL)
1.149 schwarze 1581: return eqn_read(&r->eqn, ln, buf->buf, ppos, offs);
1.124 schwarze 1582: if (r->tbl != NULL && ( ! ctl || buf->buf[pos] == '\0'))
1.149 schwarze 1583: return tbl_read(r->tbl, ln, buf->buf, ppos);
1.124 schwarze 1584: if ( ! ctl)
1.149 schwarze 1585: return roff_parsetext(buf, pos, offs);
1.100 schwarze 1586:
1587: /* Skip empty request lines. */
1588:
1.110 schwarze 1589: if (buf->buf[pos] == '"') {
1.100 schwarze 1590: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1591: ln, pos, NULL);
1.149 schwarze 1592: return ROFF_IGN;
1.110 schwarze 1593: } else if (buf->buf[pos] == '\0')
1.149 schwarze 1594: return ROFF_IGN;
1.2 schwarze 1595:
1596: /*
1597: * If a scope is open, go to the child handler for that macro,
1598: * as it may want to preprocess before doing anything with it.
1.32 schwarze 1599: * Don't do so if an equation is open.
1.2 schwarze 1600: */
1601:
1602: if (r->last) {
1.1 schwarze 1603: t = r->last->tok;
1604: assert(roffs[t].sub);
1.149 schwarze 1605: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1606: }
1607:
1.115 schwarze 1608: /* No scope is open. This is a new request or macro. */
1609:
1610: spos = pos;
1611: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1612:
1613: /* Tables ignore most macros. */
1614:
1615: if (r->tbl != NULL && (t == ROFF_MAX || t == ROFF_TS)) {
1616: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1617: ln, pos, buf->buf + spos);
1.129 schwarze 1618: if (t == ROFF_TS)
1.149 schwarze 1619: return ROFF_IGN;
1.129 schwarze 1620: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1621: pos++;
1622: while (buf->buf[pos] != '\0' && buf->buf[pos] == ' ')
1623: pos++;
1.149 schwarze 1624: return tbl_read(r->tbl, ln, buf->buf, pos);
1.115 schwarze 1625: }
1626:
1.2 schwarze 1627: /*
1.115 schwarze 1628: * This is neither a roff request nor a user-defined macro.
1629: * Let the standard macro set parsers handle it.
1.2 schwarze 1630: */
1631:
1.115 schwarze 1632: if (t == ROFF_MAX)
1.149 schwarze 1633: return ROFF_CONT;
1.115 schwarze 1634:
1635: /* Execute a roff request or a user defined macro. */
1.1 schwarze 1636:
1.2 schwarze 1637: assert(roffs[t].proc);
1.149 schwarze 1638: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1639: }
1640:
1.27 schwarze 1641: void
1.2 schwarze 1642: roff_endparse(struct roff *r)
1643: {
1.1 schwarze 1644:
1.27 schwarze 1645: if (r->last)
1.94 schwarze 1646: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1647: r->last->line, r->last->col,
1648: roffs[r->last->tok].name);
1.27 schwarze 1649:
1.32 schwarze 1650: if (r->eqn) {
1.94 schwarze 1651: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1652: r->eqn->eqn.ln, r->eqn->eqn.pos, "EQ");
1.41 schwarze 1653: eqn_end(&r->eqn);
1.32 schwarze 1654: }
1655:
1.27 schwarze 1656: if (r->tbl) {
1.94 schwarze 1657: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1658: r->tbl->line, r->tbl->pos, "TS");
1.41 schwarze 1659: tbl_end(&r->tbl);
1.27 schwarze 1660: }
1.1 schwarze 1661: }
1662:
1663: /*
1664: * Parse a roff node's type from the input buffer. This must be in the
1665: * form of ".foo xxx" in the usual way.
1666: */
1667: static enum rofft
1.87 schwarze 1668: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.1 schwarze 1669: {
1.87 schwarze 1670: char *cp;
1.16 schwarze 1671: const char *mac;
1672: size_t maclen;
1.1 schwarze 1673: enum rofft t;
1674:
1.87 schwarze 1675: cp = buf + *pos;
1676:
1677: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.149 schwarze 1678: return ROFF_MAX;
1.1 schwarze 1679:
1.87 schwarze 1680: mac = cp;
1681: maclen = roff_getname(r, &cp, ln, ppos);
1.1 schwarze 1682:
1.16 schwarze 1683: t = (r->current_string = roff_getstrn(r, mac, maclen))
1.42 schwarze 1684: ? ROFF_USERDEF : roffhash_find(mac, maclen);
1.1 schwarze 1685:
1.87 schwarze 1686: if (ROFF_MAX != t)
1687: *pos = cp - buf;
1.1 schwarze 1688:
1.149 schwarze 1689: return t;
1.1 schwarze 1690: }
1691:
1.138 schwarze 1692: /* --- handling of request blocks ----------------------------------------- */
1693:
1.1 schwarze 1694: static enum rofferr
1.2 schwarze 1695: roff_cblock(ROFF_ARGS)
1.1 schwarze 1696: {
1697:
1.2 schwarze 1698: /*
1699: * A block-close `..' should only be invoked as a child of an
1700: * ignore macro, otherwise raise a warning and just ignore it.
1701: */
1702:
1.110 schwarze 1703: if (r->last == NULL) {
1.94 schwarze 1704: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1705: ln, ppos, "..");
1.149 schwarze 1706: return ROFF_IGN;
1.2 schwarze 1707: }
1.1 schwarze 1708:
1.2 schwarze 1709: switch (r->last->tok) {
1.80 schwarze 1710: case ROFF_am:
1.93 schwarze 1711: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.80 schwarze 1712: case ROFF_ami:
1713: case ROFF_de:
1.23 schwarze 1714: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.80 schwarze 1715: case ROFF_dei:
1716: case ROFF_ig:
1.2 schwarze 1717: break;
1718: default:
1.94 schwarze 1719: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1720: ln, ppos, "..");
1.149 schwarze 1721: return ROFF_IGN;
1.2 schwarze 1722: }
1723:
1.110 schwarze 1724: if (buf->buf[pos] != '\0')
1.90 schwarze 1725: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 1726: ".. %s", buf->buf + pos);
1.2 schwarze 1727:
1728: roffnode_pop(r);
1729: roffnode_cleanscope(r);
1.149 schwarze 1730: return ROFF_IGN;
1.2 schwarze 1731:
1732: }
1.1 schwarze 1733:
1.2 schwarze 1734: static void
1735: roffnode_cleanscope(struct roff *r)
1736: {
1.1 schwarze 1737:
1.2 schwarze 1738: while (r->last) {
1.46 schwarze 1739: if (--r->last->endspan != 0)
1.2 schwarze 1740: break;
1741: roffnode_pop(r);
1742: }
1743: }
1.1 schwarze 1744:
1.68 schwarze 1745: static void
1746: roff_ccond(struct roff *r, int ln, int ppos)
1.2 schwarze 1747: {
1.1 schwarze 1748:
1.2 schwarze 1749: if (NULL == r->last) {
1.94 schwarze 1750: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1751: ln, ppos, "\\}");
1.68 schwarze 1752: return;
1.2 schwarze 1753: }
1.1 schwarze 1754:
1.2 schwarze 1755: switch (r->last->tok) {
1.80 schwarze 1756: case ROFF_el:
1757: case ROFF_ie:
1758: case ROFF_if:
1.2 schwarze 1759: break;
1760: default:
1.94 schwarze 1761: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1762: ln, ppos, "\\}");
1.68 schwarze 1763: return;
1.2 schwarze 1764: }
1.1 schwarze 1765:
1.2 schwarze 1766: if (r->last->endspan > -1) {
1.94 schwarze 1767: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1768: ln, ppos, "\\}");
1.68 schwarze 1769: return;
1.2 schwarze 1770: }
1771:
1772: roffnode_pop(r);
1773: roffnode_cleanscope(r);
1.68 schwarze 1774: return;
1.1 schwarze 1775: }
1776:
1777: static enum rofferr
1.2 schwarze 1778: roff_block(ROFF_ARGS)
1.1 schwarze 1779: {
1.93 schwarze 1780: const char *name;
1781: char *iname, *cp;
1.86 schwarze 1782: size_t namesz;
1.16 schwarze 1783:
1.93 schwarze 1784: /* Ignore groff compatibility mode for now. */
1.2 schwarze 1785:
1.110 schwarze 1786: if (tok == ROFF_de1)
1.93 schwarze 1787: tok = ROFF_de;
1.123 schwarze 1788: else if (tok == ROFF_dei1)
1789: tok = ROFF_dei;
1.110 schwarze 1790: else if (tok == ROFF_am1)
1.93 schwarze 1791: tok = ROFF_am;
1.123 schwarze 1792: else if (tok == ROFF_ami1)
1793: tok = ROFF_ami;
1.93 schwarze 1794:
1795: /* Parse the macro name argument. */
1796:
1.110 schwarze 1797: cp = buf->buf + pos;
1798: if (tok == ROFF_ig) {
1.93 schwarze 1799: iname = NULL;
1800: namesz = 0;
1801: } else {
1802: iname = cp;
1803: namesz = roff_getname(r, &cp, ln, ppos);
1804: iname[namesz] = '\0';
1805: }
1.22 schwarze 1806:
1.93 schwarze 1807: /* Resolve the macro name argument if it is indirect. */
1.22 schwarze 1808:
1.110 schwarze 1809: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1810: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.93 schwarze 1811: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1812: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1813: "%.*s", (int)namesz, iname);
1814: namesz = 0;
1815: } else
1816: namesz = strlen(name);
1817: } else
1818: name = iname;
1.22 schwarze 1819:
1.110 schwarze 1820: if (namesz == 0 && tok != ROFF_ig) {
1.93 schwarze 1821: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1822: ln, ppos, roffs[tok].name);
1.149 schwarze 1823: return ROFF_IGN;
1.93 schwarze 1824: }
1.2 schwarze 1825:
1.16 schwarze 1826: roffnode_push(r, tok, name, ln, ppos);
1827:
1828: /*
1829: * At the beginning of a `de' macro, clear the existing string
1830: * with the same name, if there is one. New content will be
1.66 schwarze 1831: * appended from roff_block_text() in multiline mode.
1.16 schwarze 1832: */
1.22 schwarze 1833:
1.110 schwarze 1834: if (tok == ROFF_de || tok == ROFF_dei)
1.86 schwarze 1835: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.2 schwarze 1836:
1.110 schwarze 1837: if (*cp == '\0')
1.149 schwarze 1838: return ROFF_IGN;
1.1 schwarze 1839:
1.93 schwarze 1840: /* Get the custom end marker. */
1.22 schwarze 1841:
1.93 schwarze 1842: iname = cp;
1.86 schwarze 1843: namesz = roff_getname(r, &cp, ln, ppos);
1.93 schwarze 1844:
1845: /* Resolve the end marker if it is indirect. */
1846:
1.110 schwarze 1847: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1848: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.93 schwarze 1849: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1850: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1851: "%.*s", (int)namesz, iname);
1852: namesz = 0;
1853: } else
1854: namesz = strlen(name);
1855: } else
1856: name = iname;
1857:
1.86 schwarze 1858: if (namesz)
1859: r->last->end = mandoc_strndup(name, namesz);
1.2 schwarze 1860:
1.110 schwarze 1861: if (*cp != '\0')
1.90 schwarze 1862: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1863: ln, pos, ".%s ... %s", roffs[tok].name, cp);
1.1 schwarze 1864:
1.149 schwarze 1865: return ROFF_IGN;
1.1 schwarze 1866: }
1867:
1868: static enum rofferr
1.2 schwarze 1869: roff_block_sub(ROFF_ARGS)
1.1 schwarze 1870: {
1.2 schwarze 1871: enum rofft t;
1872: int i, j;
1873:
1874: /*
1875: * First check whether a custom macro exists at this level. If
1876: * it does, then check against it. This is some of groff's
1877: * stranger behaviours. If we encountered a custom end-scope
1878: * tag and that tag also happens to be a "real" macro, then we
1879: * need to try interpreting it again as a real macro. If it's
1880: * not, then return ignore. Else continue.
1881: */
1882:
1883: if (r->last->end) {
1.35 schwarze 1884: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.110 schwarze 1885: if (buf->buf[i] != r->last->end[j])
1.2 schwarze 1886: break;
1.1 schwarze 1887:
1.110 schwarze 1888: if (r->last->end[j] == '\0' &&
1889: (buf->buf[i] == '\0' ||
1890: buf->buf[i] == ' ' ||
1891: buf->buf[i] == '\t')) {
1.2 schwarze 1892: roffnode_pop(r);
1893: roffnode_cleanscope(r);
1.1 schwarze 1894:
1.110 schwarze 1895: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.35 schwarze 1896: i++;
1897:
1898: pos = i;
1.110 schwarze 1899: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1900: ROFF_MAX)
1.149 schwarze 1901: return ROFF_RERUN;
1902: return ROFF_IGN;
1.2 schwarze 1903: }
1.1 schwarze 1904: }
1905:
1.2 schwarze 1906: /*
1907: * If we have no custom end-query or lookup failed, then try
1908: * pulling it out of the hashtable.
1909: */
1.1 schwarze 1910:
1.110 schwarze 1911: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.1 schwarze 1912:
1.110 schwarze 1913: if (t != ROFF_cblock) {
1914: if (tok != ROFF_ig)
1915: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.149 schwarze 1916: return ROFF_IGN;
1.16 schwarze 1917: }
1.1 schwarze 1918:
1.2 schwarze 1919: assert(roffs[t].proc);
1.149 schwarze 1920: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1921: }
1922:
1923: static enum rofferr
1924: roff_block_text(ROFF_ARGS)
1925: {
1926:
1.110 schwarze 1927: if (tok != ROFF_ig)
1928: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.16 schwarze 1929:
1.149 schwarze 1930: return ROFF_IGN;
1.2 schwarze 1931: }
1932:
1933: static enum rofferr
1934: roff_cond_sub(ROFF_ARGS)
1935: {
1936: enum rofft t;
1.37 schwarze 1937: char *ep;
1.71 schwarze 1938: int rr;
1.2 schwarze 1939:
1940: rr = r->last->rule;
1.37 schwarze 1941: roffnode_cleanscope(r);
1.110 schwarze 1942: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.2 schwarze 1943:
1.37 schwarze 1944: /*
1.50 schwarze 1945: * Fully handle known macros when they are structurally
1946: * required or when the conditional evaluated to true.
1.5 schwarze 1947: */
1948:
1.110 schwarze 1949: if ((t != ROFF_MAX) &&
1950: (rr || roffs[t].flags & ROFFMAC_STRUCT)) {
1.50 schwarze 1951: assert(roffs[t].proc);
1.149 schwarze 1952: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.50 schwarze 1953: }
1.39 schwarze 1954:
1.69 schwarze 1955: /*
1956: * If `\}' occurs on a macro line without a preceding macro,
1957: * drop the line completely.
1958: */
1959:
1.110 schwarze 1960: ep = buf->buf + pos;
1961: if (ep[0] == '\\' && ep[1] == '}')
1.71 schwarze 1962: rr = 0;
1.69 schwarze 1963:
1.50 schwarze 1964: /* Always check for the closing delimiter `\}'. */
1.39 schwarze 1965:
1.110 schwarze 1966: while ((ep = strchr(ep, '\\')) != NULL) {
1967: if (*(++ep) == '}') {
1.70 schwarze 1968: *ep = '&';
1.110 schwarze 1969: roff_ccond(r, ln, ep - buf->buf - 1);
1.70 schwarze 1970: }
1.119 schwarze 1971: if (*ep != '\0')
1972: ++ep;
1.50 schwarze 1973: }
1.149 schwarze 1974: return rr ? ROFF_CONT : ROFF_IGN;
1.2 schwarze 1975: }
1976:
1977: static enum rofferr
1978: roff_cond_text(ROFF_ARGS)
1979: {
1.37 schwarze 1980: char *ep;
1.71 schwarze 1981: int rr;
1.2 schwarze 1982:
1983: rr = r->last->rule;
1.37 schwarze 1984: roffnode_cleanscope(r);
1.1 schwarze 1985:
1.110 schwarze 1986: ep = buf->buf + pos;
1987: while ((ep = strchr(ep, '\\')) != NULL) {
1988: if (*(++ep) == '}') {
1.70 schwarze 1989: *ep = '&';
1.110 schwarze 1990: roff_ccond(r, ln, ep - buf->buf - 1);
1.70 schwarze 1991: }
1.119 schwarze 1992: if (*ep != '\0')
1993: ++ep;
1.2 schwarze 1994: }
1.149 schwarze 1995: return rr ? ROFF_CONT : ROFF_IGN;
1.2 schwarze 1996: }
1997:
1.138 schwarze 1998: /* --- handling of numeric and conditional expressions -------------------- */
1999:
1.77 schwarze 2000: /*
2001: * Parse a single signed integer number. Stop at the first non-digit.
2002: * If there is at least one digit, return success and advance the
2003: * parse point, else return failure and let the parse point unchanged.
2004: * Ignore overflows, treat them just like the C language.
2005: */
1.56 schwarze 2006: static int
1.133 schwarze 2007: roff_getnum(const char *v, int *pos, int *res, int flags)
1.56 schwarze 2008: {
1.133 schwarze 2009: int myres, scaled, n, p;
1.79 schwarze 2010:
2011: if (NULL == res)
2012: res = &myres;
1.56 schwarze 2013:
2014: p = *pos;
2015: n = v[p] == '-';
1.133 schwarze 2016: if (n || v[p] == '+')
1.56 schwarze 2017: p++;
2018:
1.133 schwarze 2019: if (flags & ROFFNUM_WHITE)
2020: while (isspace((unsigned char)v[p]))
2021: p++;
2022:
1.56 schwarze 2023: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.77 schwarze 2024: *res = 10 * *res + v[p] - '0';
1.56 schwarze 2025: if (p == *pos + n)
2026: return 0;
2027:
2028: if (n)
2029: *res = -*res;
2030:
1.126 schwarze 2031: /* Each number may be followed by one optional scaling unit. */
2032:
2033: switch (v[p]) {
2034: case 'f':
1.133 schwarze 2035: scaled = *res * 65536;
1.126 schwarze 2036: break;
2037: case 'i':
1.133 schwarze 2038: scaled = *res * 240;
1.126 schwarze 2039: break;
2040: case 'c':
1.133 schwarze 2041: scaled = *res * 240 / 2.54;
1.126 schwarze 2042: break;
2043: case 'v':
2044: case 'P':
1.133 schwarze 2045: scaled = *res * 40;
1.126 schwarze 2046: break;
2047: case 'm':
2048: case 'n':
1.133 schwarze 2049: scaled = *res * 24;
1.126 schwarze 2050: break;
2051: case 'p':
1.133 schwarze 2052: scaled = *res * 10 / 3;
1.126 schwarze 2053: break;
2054: case 'u':
1.133 schwarze 2055: scaled = *res;
1.126 schwarze 2056: break;
2057: case 'M':
1.133 schwarze 2058: scaled = *res * 6 / 25;
1.126 schwarze 2059: break;
2060: default:
1.133 schwarze 2061: scaled = *res;
1.126 schwarze 2062: p--;
2063: break;
2064: }
1.133 schwarze 2065: if (flags & ROFFNUM_SCALE)
2066: *res = scaled;
1.126 schwarze 2067:
2068: *pos = p + 1;
1.149 schwarze 2069: return 1;
1.56 schwarze 2070: }
2071:
1.71 schwarze 2072: /*
2073: * Evaluate a string comparison condition.
2074: * The first character is the delimiter.
2075: * Succeed if the string up to its second occurrence
2076: * matches the string up to its third occurence.
2077: * Advance the cursor after the third occurrence
2078: * or lacking that, to the end of the line.
2079: */
2080: static int
2081: roff_evalstrcond(const char *v, int *pos)
2082: {
2083: const char *s1, *s2, *s3;
2084: int match;
2085:
2086: match = 0;
2087: s1 = v + *pos; /* initial delimiter */
2088: s2 = s1 + 1; /* for scanning the first string */
2089: s3 = strchr(s2, *s1); /* for scanning the second string */
2090:
2091: if (NULL == s3) /* found no middle delimiter */
2092: goto out;
2093:
2094: while ('\0' != *++s3) {
2095: if (*s2 != *s3) { /* mismatch */
2096: s3 = strchr(s3, *s1);
2097: break;
2098: }
2099: if (*s3 == *s1) { /* found the final delimiter */
2100: match = 1;
2101: break;
2102: }
2103: s2++;
2104: }
2105:
2106: out:
2107: if (NULL == s3)
2108: s3 = strchr(s2, '\0');
1.114 schwarze 2109: else if (*s3 != '\0')
1.71 schwarze 2110: s3++;
2111: *pos = s3 - v;
1.149 schwarze 2112: return match;
1.71 schwarze 2113: }
2114:
1.77 schwarze 2115: /*
2116: * Evaluate an optionally negated single character, numerical,
2117: * or string condition.
2118: */
1.71 schwarze 2119: static int
1.143 schwarze 2120: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.5 schwarze 2121: {
1.143 schwarze 2122: char *cp, *name;
2123: size_t sz;
1.113 schwarze 2124: int number, savepos, wanttrue;
1.5 schwarze 2125:
1.71 schwarze 2126: if ('!' == v[*pos]) {
2127: wanttrue = 0;
2128: (*pos)++;
2129: } else
2130: wanttrue = 1;
2131:
1.5 schwarze 2132: switch (v[*pos]) {
1.112 schwarze 2133: case '\0':
1.149 schwarze 2134: return 0;
1.80 schwarze 2135: case 'n':
2136: case 'o':
1.5 schwarze 2137: (*pos)++;
1.149 schwarze 2138: return wanttrue;
1.80 schwarze 2139: case 'c':
2140: case 'd':
2141: case 'e':
2142: case 't':
1.111 schwarze 2143: case 'v':
1.5 schwarze 2144: (*pos)++;
1.149 schwarze 2145: return !wanttrue;
1.143 schwarze 2146: case 'r':
2147: cp = name = v + ++*pos;
2148: sz = roff_getname(r, &cp, ln, *pos);
2149: *pos = cp - v;
1.149 schwarze 2150: return (sz && roff_hasregn(r, name, sz)) == wanttrue;
1.5 schwarze 2151: default:
2152: break;
2153: }
2154:
1.113 schwarze 2155: savepos = *pos;
1.133 schwarze 2156: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.149 schwarze 2157: return (number > 0) == wanttrue;
1.113 schwarze 2158: else if (*pos == savepos)
1.149 schwarze 2159: return roff_evalstrcond(v, pos) == wanttrue;
1.77 schwarze 2160: else
1.149 schwarze 2161: return 0;
1.5 schwarze 2162: }
2163:
1.2 schwarze 2164: static enum rofferr
1.21 schwarze 2165: roff_line_ignore(ROFF_ARGS)
1.6 schwarze 2166: {
1.30 schwarze 2167:
1.149 schwarze 2168: return ROFF_IGN;
1.21 schwarze 2169: }
2170:
2171: static enum rofferr
1.123 schwarze 2172: roff_insec(ROFF_ARGS)
2173: {
2174:
2175: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
2176: ln, ppos, roffs[tok].name);
1.149 schwarze 2177: return ROFF_IGN;
1.123 schwarze 2178: }
2179:
2180: static enum rofferr
2181: roff_unsupp(ROFF_ARGS)
2182: {
2183:
2184: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
2185: ln, ppos, roffs[tok].name);
1.149 schwarze 2186: return ROFF_IGN;
1.123 schwarze 2187: }
2188:
2189: static enum rofferr
1.2 schwarze 2190: roff_cond(ROFF_ARGS)
2191: {
1.46 schwarze 2192:
2193: roffnode_push(r, tok, NULL, ln, ppos);
1.2 schwarze 2194:
1.80 schwarze 2195: /*
1.35 schwarze 2196: * An `.el' has no conditional body: it will consume the value
2197: * of the current rstack entry set in prior `ie' calls or
1.80 schwarze 2198: * defaults to DENY.
1.35 schwarze 2199: *
2200: * If we're not an `el', however, then evaluate the conditional.
2201: */
1.1 schwarze 2202:
1.110 schwarze 2203: r->last->rule = tok == ROFF_el ?
1.80 schwarze 2204: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.110 schwarze 2205: roff_evalcond(r, ln, buf->buf, &pos);
1.2 schwarze 2206:
1.35 schwarze 2207: /*
2208: * An if-else will put the NEGATION of the current evaluated
2209: * conditional into the stack of rules.
2210: */
2211:
1.110 schwarze 2212: if (tok == ROFF_ie) {
1.96 schwarze 2213: if (r->rstackpos + 1 == r->rstacksz) {
2214: r->rstacksz += 16;
2215: r->rstack = mandoc_reallocarray(r->rstack,
2216: r->rstacksz, sizeof(int));
1.35 schwarze 2217: }
1.71 schwarze 2218: r->rstack[++r->rstackpos] = !r->last->rule;
1.2 schwarze 2219: }
1.5 schwarze 2220:
2221: /* If the parent has false as its rule, then so do we. */
2222:
1.71 schwarze 2223: if (r->last->parent && !r->last->parent->rule)
2224: r->last->rule = 0;
1.5 schwarze 2225:
2226: /*
1.46 schwarze 2227: * Determine scope.
2228: * If there is nothing on the line after the conditional,
2229: * not even whitespace, use next-line scope.
1.5 schwarze 2230: */
1.2 schwarze 2231:
1.110 schwarze 2232: if (buf->buf[pos] == '\0') {
1.46 schwarze 2233: r->last->endspan = 2;
2234: goto out;
2235: }
2236:
1.110 schwarze 2237: while (buf->buf[pos] == ' ')
1.46 schwarze 2238: pos++;
2239:
2240: /* An opening brace requests multiline scope. */
1.2 schwarze 2241:
1.110 schwarze 2242: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.2 schwarze 2243: r->last->endspan = -1;
2244: pos += 2;
1.144 schwarze 2245: while (buf->buf[pos] == ' ')
2246: pos++;
1.46 schwarze 2247: goto out;
1.80 schwarze 2248: }
1.2 schwarze 2249:
2250: /*
1.46 schwarze 2251: * Anything else following the conditional causes
2252: * single-line scope. Warn if the scope contains
2253: * nothing but trailing whitespace.
1.2 schwarze 2254: */
2255:
1.110 schwarze 2256: if (buf->buf[pos] == '\0')
1.89 schwarze 2257: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
2258: ln, ppos, roffs[tok].name);
1.2 schwarze 2259:
1.46 schwarze 2260: r->last->endspan = 1;
1.1 schwarze 2261:
1.46 schwarze 2262: out:
1.2 schwarze 2263: *offs = pos;
1.149 schwarze 2264: return ROFF_RERUN;
1.1 schwarze 2265: }
2266:
1.2 schwarze 2267: static enum rofferr
1.7 schwarze 2268: roff_ds(ROFF_ARGS)
2269: {
1.85 schwarze 2270: char *string;
2271: const char *name;
2272: size_t namesz;
1.10 schwarze 2273:
1.123 schwarze 2274: /* Ignore groff compatibility mode for now. */
2275:
2276: if (tok == ROFF_ds1)
2277: tok = ROFF_ds;
2278: else if (tok == ROFF_as1)
2279: tok = ROFF_as;
2280:
1.10 schwarze 2281: /*
1.85 schwarze 2282: * The first word is the name of the string.
2283: * If it is empty or terminated by an escape sequence,
2284: * abort the `ds' request without defining anything.
1.10 schwarze 2285: */
1.7 schwarze 2286:
1.110 schwarze 2287: name = string = buf->buf + pos;
2288: if (*name == '\0')
1.149 schwarze 2289: return ROFF_IGN;
1.7 schwarze 2290:
1.85 schwarze 2291: namesz = roff_getname(r, &string, ln, pos);
1.110 schwarze 2292: if (name[namesz] == '\\')
1.149 schwarze 2293: return ROFF_IGN;
1.85 schwarze 2294:
2295: /* Read past the initial double-quote, if any. */
1.110 schwarze 2296: if (*string == '"')
1.7 schwarze 2297: string++;
2298:
1.10 schwarze 2299: /* The rest is the value. */
1.85 schwarze 2300: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2301: ROFF_as == tok);
1.149 schwarze 2302: return ROFF_IGN;
1.7 schwarze 2303: }
2304:
1.77 schwarze 2305: /*
2306: * Parse a single operator, one or two characters long.
2307: * If the operator is recognized, return success and advance the
2308: * parse point, else return failure and let the parse point unchanged.
2309: */
2310: static int
2311: roff_getop(const char *v, int *pos, char *res)
2312: {
2313:
2314: *res = v[*pos];
2315:
2316: switch (*res) {
1.80 schwarze 2317: case '+':
2318: case '-':
2319: case '*':
2320: case '/':
2321: case '%':
2322: case '&':
2323: case ':':
1.77 schwarze 2324: break;
2325: case '<':
2326: switch (v[*pos + 1]) {
1.80 schwarze 2327: case '=':
1.77 schwarze 2328: *res = 'l';
2329: (*pos)++;
2330: break;
1.80 schwarze 2331: case '>':
1.77 schwarze 2332: *res = '!';
2333: (*pos)++;
2334: break;
1.80 schwarze 2335: case '?':
1.77 schwarze 2336: *res = 'i';
2337: (*pos)++;
2338: break;
2339: default:
2340: break;
2341: }
2342: break;
2343: case '>':
2344: switch (v[*pos + 1]) {
1.80 schwarze 2345: case '=':
1.77 schwarze 2346: *res = 'g';
2347: (*pos)++;
2348: break;
1.80 schwarze 2349: case '?':
1.77 schwarze 2350: *res = 'a';
2351: (*pos)++;
2352: break;
2353: default:
2354: break;
2355: }
2356: break;
2357: case '=':
2358: if ('=' == v[*pos + 1])
2359: (*pos)++;
2360: break;
2361: default:
1.149 schwarze 2362: return 0;
1.77 schwarze 2363: }
2364: (*pos)++;
2365:
1.149 schwarze 2366: return *res;
1.77 schwarze 2367: }
2368:
2369: /*
2370: * Evaluate either a parenthesized numeric expression
2371: * or a single signed integer number.
2372: */
2373: static int
1.106 schwarze 2374: roff_evalpar(struct roff *r, int ln,
1.133 schwarze 2375: const char *v, int *pos, int *res, int flags)
1.77 schwarze 2376: {
2377:
2378: if ('(' != v[*pos])
1.149 schwarze 2379: return roff_getnum(v, pos, res, flags);
1.77 schwarze 2380:
2381: (*pos)++;
1.133 schwarze 2382: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.149 schwarze 2383: return 0;
1.77 schwarze 2384:
1.79 schwarze 2385: /*
2386: * Omission of the closing parenthesis
2387: * is an error in validation mode,
2388: * but ignored in evaluation mode.
2389: */
2390:
1.77 schwarze 2391: if (')' == v[*pos])
2392: (*pos)++;
1.79 schwarze 2393: else if (NULL == res)
1.149 schwarze 2394: return 0;
1.77 schwarze 2395:
1.149 schwarze 2396: return 1;
1.77 schwarze 2397: }
2398:
2399: /*
2400: * Evaluate a complete numeric expression.
2401: * Proceed left to right, there is no concept of precedence.
2402: */
2403: static int
1.106 schwarze 2404: roff_evalnum(struct roff *r, int ln, const char *v,
1.133 schwarze 2405: int *pos, int *res, int flags)
1.77 schwarze 2406: {
2407: int mypos, operand2;
2408: char operator;
2409:
2410: if (NULL == pos) {
2411: mypos = 0;
2412: pos = &mypos;
2413: }
2414:
1.133 schwarze 2415: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2416: while (isspace((unsigned char)v[*pos]))
2417: (*pos)++;
2418:
1.133 schwarze 2419: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.149 schwarze 2420: return 0;
1.77 schwarze 2421:
2422: while (1) {
1.133 schwarze 2423: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2424: while (isspace((unsigned char)v[*pos]))
2425: (*pos)++;
2426:
2427: if ( ! roff_getop(v, pos, &operator))
2428: break;
2429:
1.133 schwarze 2430: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2431: while (isspace((unsigned char)v[*pos]))
2432: (*pos)++;
2433:
1.133 schwarze 2434: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.149 schwarze 2435: return 0;
1.77 schwarze 2436:
1.133 schwarze 2437: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2438: while (isspace((unsigned char)v[*pos]))
2439: (*pos)++;
1.79 schwarze 2440:
2441: if (NULL == res)
2442: continue;
1.77 schwarze 2443:
2444: switch (operator) {
1.80 schwarze 2445: case '+':
1.77 schwarze 2446: *res += operand2;
2447: break;
1.80 schwarze 2448: case '-':
1.77 schwarze 2449: *res -= operand2;
2450: break;
1.80 schwarze 2451: case '*':
1.77 schwarze 2452: *res *= operand2;
2453: break;
1.80 schwarze 2454: case '/':
1.116 schwarze 2455: if (operand2 == 0) {
1.106 schwarze 2456: mandoc_msg(MANDOCERR_DIVZERO,
2457: r->parse, ln, *pos, v);
2458: *res = 0;
2459: break;
2460: }
1.77 schwarze 2461: *res /= operand2;
2462: break;
1.80 schwarze 2463: case '%':
1.116 schwarze 2464: if (operand2 == 0) {
2465: mandoc_msg(MANDOCERR_DIVZERO,
2466: r->parse, ln, *pos, v);
2467: *res = 0;
2468: break;
2469: }
1.77 schwarze 2470: *res %= operand2;
2471: break;
1.80 schwarze 2472: case '<':
1.77 schwarze 2473: *res = *res < operand2;
2474: break;
1.80 schwarze 2475: case '>':
1.77 schwarze 2476: *res = *res > operand2;
2477: break;
1.80 schwarze 2478: case 'l':
1.77 schwarze 2479: *res = *res <= operand2;
2480: break;
1.80 schwarze 2481: case 'g':
1.77 schwarze 2482: *res = *res >= operand2;
2483: break;
1.80 schwarze 2484: case '=':
1.77 schwarze 2485: *res = *res == operand2;
2486: break;
1.80 schwarze 2487: case '!':
1.77 schwarze 2488: *res = *res != operand2;
2489: break;
1.80 schwarze 2490: case '&':
1.77 schwarze 2491: *res = *res && operand2;
2492: break;
1.80 schwarze 2493: case ':':
1.77 schwarze 2494: *res = *res || operand2;
2495: break;
1.80 schwarze 2496: case 'i':
1.77 schwarze 2497: if (operand2 < *res)
2498: *res = operand2;
2499: break;
1.80 schwarze 2500: case 'a':
1.77 schwarze 2501: if (operand2 > *res)
2502: *res = operand2;
2503: break;
2504: default:
2505: abort();
2506: }
2507: }
1.149 schwarze 2508: return 1;
1.77 schwarze 2509: }
2510:
1.138 schwarze 2511: /* --- register management ------------------------------------------------ */
2512:
1.52 schwarze 2513: void
1.60 schwarze 2514: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.41 schwarze 2515: {
1.52 schwarze 2516: struct roffreg *reg;
2517:
2518: /* Search for an existing register with the same name. */
2519: reg = r->regtab;
2520:
2521: while (reg && strcmp(name, reg->key.p))
2522: reg = reg->next;
1.41 schwarze 2523:
1.52 schwarze 2524: if (NULL == reg) {
2525: /* Create a new register. */
2526: reg = mandoc_malloc(sizeof(struct roffreg));
2527: reg->key.p = mandoc_strdup(name);
2528: reg->key.sz = strlen(name);
1.60 schwarze 2529: reg->val = 0;
1.52 schwarze 2530: reg->next = r->regtab;
2531: r->regtab = reg;
2532: }
2533:
1.60 schwarze 2534: if ('+' == sign)
2535: reg->val += val;
2536: else if ('-' == sign)
2537: reg->val -= val;
2538: else
2539: reg->val = val;
1.41 schwarze 2540: }
2541:
1.65 schwarze 2542: /*
2543: * Handle some predefined read-only number registers.
2544: * For now, return -1 if the requested register is not predefined;
2545: * in case a predefined read-only register having the value -1
2546: * were to turn up, another special value would have to be chosen.
2547: */
2548: static int
1.145 schwarze 2549: roff_getregro(const struct roff *r, const char *name)
1.65 schwarze 2550: {
2551:
2552: switch (*name) {
1.145 schwarze 2553: case '$': /* Number of arguments of the last macro evaluated. */
1.149 schwarze 2554: return r->argc;
1.80 schwarze 2555: case 'A': /* ASCII approximation mode is always off. */
1.149 schwarze 2556: return 0;
1.80 schwarze 2557: case 'g': /* Groff compatibility mode is always on. */
1.149 schwarze 2558: return 1;
1.80 schwarze 2559: case 'H': /* Fixed horizontal resolution. */
1.149 schwarze 2560: return 24;
1.80 schwarze 2561: case 'j': /* Always adjust left margin only. */
1.149 schwarze 2562: return 0;
1.80 schwarze 2563: case 'T': /* Some output device is always defined. */
1.149 schwarze 2564: return 1;
1.80 schwarze 2565: case 'V': /* Fixed vertical resolution. */
1.149 schwarze 2566: return 40;
1.65 schwarze 2567: default:
1.149 schwarze 2568: return -1;
1.65 schwarze 2569: }
2570: }
2571:
1.53 schwarze 2572: int
1.52 schwarze 2573: roff_getreg(const struct roff *r, const char *name)
1.41 schwarze 2574: {
1.52 schwarze 2575: struct roffreg *reg;
1.65 schwarze 2576: int val;
2577:
2578: if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) {
1.145 schwarze 2579: val = roff_getregro(r, name + 1);
1.65 schwarze 2580: if (-1 != val)
1.149 schwarze 2581: return val;
1.65 schwarze 2582: }
1.52 schwarze 2583:
2584: for (reg = r->regtab; reg; reg = reg->next)
2585: if (0 == strcmp(name, reg->key.p))
1.149 schwarze 2586: return reg->val;
1.53 schwarze 2587:
1.149 schwarze 2588: return 0;
1.53 schwarze 2589: }
2590:
2591: static int
2592: roff_getregn(const struct roff *r, const char *name, size_t len)
2593: {
2594: struct roffreg *reg;
1.65 schwarze 2595: int val;
2596:
2597: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2598: val = roff_getregro(r, name + 1);
1.65 schwarze 2599: if (-1 != val)
1.149 schwarze 2600: return val;
1.65 schwarze 2601: }
1.53 schwarze 2602:
2603: for (reg = r->regtab; reg; reg = reg->next)
2604: if (len == reg->key.sz &&
2605: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 2606: return reg->val;
1.143 schwarze 2607:
1.149 schwarze 2608: return 0;
1.143 schwarze 2609: }
2610:
2611: static int
2612: roff_hasregn(const struct roff *r, const char *name, size_t len)
2613: {
2614: struct roffreg *reg;
2615: int val;
2616:
2617: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2618: val = roff_getregro(r, name + 1);
1.143 schwarze 2619: if (-1 != val)
1.149 schwarze 2620: return 1;
1.143 schwarze 2621: }
2622:
2623: for (reg = r->regtab; reg; reg = reg->next)
2624: if (len == reg->key.sz &&
2625: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 2626: return 1;
1.41 schwarze 2627:
1.149 schwarze 2628: return 0;
1.41 schwarze 2629: }
2630:
1.52 schwarze 2631: static void
2632: roff_freereg(struct roffreg *reg)
1.41 schwarze 2633: {
1.52 schwarze 2634: struct roffreg *old_reg;
1.41 schwarze 2635:
1.52 schwarze 2636: while (NULL != reg) {
2637: free(reg->key.p);
2638: old_reg = reg;
2639: reg = reg->next;
2640: free(old_reg);
2641: }
1.41 schwarze 2642: }
1.7 schwarze 2643:
2644: static enum rofferr
1.6 schwarze 2645: roff_nr(ROFF_ARGS)
1.1 schwarze 2646: {
1.85 schwarze 2647: char *key, *val;
2648: size_t keysz;
1.37 schwarze 2649: int iv;
1.60 schwarze 2650: char sign;
1.6 schwarze 2651:
1.110 schwarze 2652: key = val = buf->buf + pos;
2653: if (*key == '\0')
1.149 schwarze 2654: return ROFF_IGN;
1.85 schwarze 2655:
2656: keysz = roff_getname(r, &val, ln, pos);
1.110 schwarze 2657: if (key[keysz] == '\\')
1.149 schwarze 2658: return ROFF_IGN;
1.85 schwarze 2659: key[keysz] = '\0';
1.6 schwarze 2660:
1.60 schwarze 2661: sign = *val;
1.110 schwarze 2662: if (sign == '+' || sign == '-')
1.60 schwarze 2663: val++;
2664:
1.133 schwarze 2665: if (roff_evalnum(r, ln, val, NULL, &iv, ROFFNUM_SCALE))
1.77 schwarze 2666: roff_setreg(r, key, iv, sign);
1.1 schwarze 2667:
1.149 schwarze 2668: return ROFF_IGN;
1.76 schwarze 2669: }
2670:
2671: static enum rofferr
2672: roff_rr(ROFF_ARGS)
2673: {
2674: struct roffreg *reg, **prev;
1.85 schwarze 2675: char *name, *cp;
2676: size_t namesz;
1.76 schwarze 2677:
1.110 schwarze 2678: name = cp = buf->buf + pos;
2679: if (*name == '\0')
1.149 schwarze 2680: return ROFF_IGN;
1.85 schwarze 2681: namesz = roff_getname(r, &cp, ln, pos);
2682: name[namesz] = '\0';
1.76 schwarze 2683:
2684: prev = &r->regtab;
2685: while (1) {
2686: reg = *prev;
1.110 schwarze 2687: if (reg == NULL || !strcmp(name, reg->key.p))
1.76 schwarze 2688: break;
2689: prev = ®->next;
2690: }
1.110 schwarze 2691: if (reg != NULL) {
1.76 schwarze 2692: *prev = reg->next;
2693: free(reg->key.p);
2694: free(reg);
2695: }
1.149 schwarze 2696: return ROFF_IGN;
1.29 schwarze 2697: }
2698:
1.138 schwarze 2699: /* --- handler functions for roff requests -------------------------------- */
2700:
1.29 schwarze 2701: static enum rofferr
2702: roff_rm(ROFF_ARGS)
2703: {
2704: const char *name;
2705: char *cp;
1.85 schwarze 2706: size_t namesz;
1.29 schwarze 2707:
1.110 schwarze 2708: cp = buf->buf + pos;
2709: while (*cp != '\0') {
1.85 schwarze 2710: name = cp;
1.110 schwarze 2711: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.85 schwarze 2712: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.110 schwarze 2713: if (name[namesz] == '\\')
1.85 schwarze 2714: break;
1.29 schwarze 2715: }
1.149 schwarze 2716: return ROFF_IGN;
1.51 schwarze 2717: }
2718:
2719: static enum rofferr
2720: roff_it(ROFF_ARGS)
2721: {
2722: int iv;
2723:
2724: /* Parse the number of lines. */
1.133 schwarze 2725:
2726: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.95 schwarze 2727: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.110 schwarze 2728: ln, ppos, buf->buf + 1);
1.149 schwarze 2729: return ROFF_IGN;
1.51 schwarze 2730: }
2731:
1.134 schwarze 2732: while (isspace((unsigned char)buf->buf[pos]))
2733: pos++;
2734:
2735: /*
2736: * Arm the input line trap.
2737: * Special-casing "an-trap" is an ugly workaround to cope
2738: * with DocBook stupidly fiddling with man(7) internals.
2739: */
1.133 schwarze 2740:
1.51 schwarze 2741: roffit_lines = iv;
1.134 schwarze 2742: roffit_macro = mandoc_strdup(iv != 1 ||
2743: strcmp(buf->buf + pos, "an-trap") ?
2744: buf->buf + pos : "br");
1.149 schwarze 2745: return ROFF_IGN;
1.47 schwarze 2746: }
2747:
2748: static enum rofferr
2749: roff_Dd(ROFF_ARGS)
2750: {
2751: const char *const *cp;
2752:
1.99 schwarze 2753: if ((r->options & (MPARSE_MDOC | MPARSE_QUICK)) == 0)
1.47 schwarze 2754: for (cp = __mdoc_reserved; *cp; cp++)
2755: roff_setstr(r, *cp, NULL, 0);
2756:
1.99 schwarze 2757: if (r->format == 0)
2758: r->format = MPARSE_MDOC;
2759:
1.149 schwarze 2760: return ROFF_CONT;
1.47 schwarze 2761: }
2762:
2763: static enum rofferr
2764: roff_TH(ROFF_ARGS)
2765: {
2766: const char *const *cp;
2767:
1.99 schwarze 2768: if ((r->options & MPARSE_QUICK) == 0)
1.47 schwarze 2769: for (cp = __man_reserved; *cp; cp++)
2770: roff_setstr(r, *cp, NULL, 0);
2771:
1.99 schwarze 2772: if (r->format == 0)
2773: r->format = MPARSE_MAN;
2774:
1.149 schwarze 2775: return ROFF_CONT;
1.14 schwarze 2776: }
2777:
2778: static enum rofferr
1.27 schwarze 2779: roff_TE(ROFF_ARGS)
2780: {
2781:
2782: if (NULL == r->tbl)
1.94 schwarze 2783: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2784: ln, ppos, "TE");
1.130 schwarze 2785: else if ( ! tbl_end(&r->tbl)) {
2786: free(buf->buf);
2787: buf->buf = mandoc_strdup(".sp");
2788: buf->sz = 4;
1.149 schwarze 2789: return ROFF_REPARSE;
1.130 schwarze 2790: }
1.149 schwarze 2791: return ROFF_IGN;
1.27 schwarze 2792: }
2793:
2794: static enum rofferr
2795: roff_T_(ROFF_ARGS)
2796: {
2797:
2798: if (NULL == r->tbl)
1.94 schwarze 2799: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2800: ln, ppos, "T&");
1.27 schwarze 2801: else
2802: tbl_restart(ppos, ln, r->tbl);
2803:
1.149 schwarze 2804: return ROFF_IGN;
1.27 schwarze 2805: }
2806:
1.102 schwarze 2807: /*
2808: * Handle in-line equation delimiters.
2809: */
2810: static enum rofferr
1.110 schwarze 2811: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.41 schwarze 2812: {
1.105 schwarze 2813: char *cp1, *cp2;
2814: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.41 schwarze 2815:
1.102 schwarze 2816: /*
2817: * Outside equations, look for an opening delimiter.
2818: * If we are inside an equation, we already know it is
2819: * in-line, or this function wouldn't have been called;
2820: * so look for a closing delimiter.
2821: */
2822:
1.110 schwarze 2823: cp1 = buf->buf + pos;
1.102 schwarze 2824: cp2 = strchr(cp1, r->eqn == NULL ?
2825: r->last_eqn->odelim : r->last_eqn->cdelim);
2826: if (cp2 == NULL)
1.149 schwarze 2827: return ROFF_CONT;
1.102 schwarze 2828:
1.105 schwarze 2829: *cp2++ = '\0';
2830: bef_pr = bef_nl = aft_nl = aft_pr = "";
2831:
2832: /* Handle preceding text, protecting whitespace. */
2833:
1.110 schwarze 2834: if (*buf->buf != '\0') {
1.105 schwarze 2835: if (r->eqn == NULL)
2836: bef_pr = "\\&";
2837: bef_nl = "\n";
2838: }
2839:
2840: /*
2841: * Prepare replacing the delimiter with an equation macro
2842: * and drop leading white space from the equation.
2843: */
1.102 schwarze 2844:
1.105 schwarze 2845: if (r->eqn == NULL) {
2846: while (*cp2 == ' ')
2847: cp2++;
2848: mac = ".EQ";
2849: } else
2850: mac = ".EN";
2851:
2852: /* Handle following text, protecting whitespace. */
2853:
2854: if (*cp2 != '\0') {
2855: aft_nl = "\n";
2856: if (r->eqn != NULL)
2857: aft_pr = "\\&";
2858: }
2859:
2860: /* Do the actual replacement. */
2861:
1.110 schwarze 2862: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.105 schwarze 2863: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.110 schwarze 2864: free(buf->buf);
2865: buf->buf = cp1;
1.102 schwarze 2866:
2867: /* Toggle the in-line state of the eqn subsystem. */
2868:
2869: r->eqn_inline = r->eqn == NULL;
1.149 schwarze 2870: return ROFF_REPARSE;
1.41 schwarze 2871: }
2872:
1.107 schwarze 2873: static enum rofferr
2874: roff_EQ(ROFF_ARGS)
1.32 schwarze 2875: {
1.41 schwarze 2876: struct eqn_node *e;
1.32 schwarze 2877:
1.110 schwarze 2878: assert(r->eqn == NULL);
1.107 schwarze 2879: e = eqn_alloc(ppos, ln, r->parse);
1.32 schwarze 2880:
1.102 schwarze 2881: if (r->last_eqn) {
1.32 schwarze 2882: r->last_eqn->next = e;
1.102 schwarze 2883: e->delim = r->last_eqn->delim;
2884: e->odelim = r->last_eqn->odelim;
2885: e->cdelim = r->last_eqn->cdelim;
2886: } else
1.32 schwarze 2887: r->first_eqn = r->last_eqn = e;
2888:
2889: r->eqn = r->last_eqn = e;
1.41 schwarze 2890:
1.110 schwarze 2891: if (buf->buf[pos] != '\0')
1.107 schwarze 2892: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 2893: ".EQ %s", buf->buf + pos);
1.41 schwarze 2894:
1.149 schwarze 2895: return ROFF_IGN;
1.32 schwarze 2896: }
2897:
2898: static enum rofferr
2899: roff_EN(ROFF_ARGS)
2900: {
2901:
1.94 schwarze 2902: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
1.149 schwarze 2903: return ROFF_IGN;
1.32 schwarze 2904: }
2905:
2906: static enum rofferr
1.27 schwarze 2907: roff_TS(ROFF_ARGS)
2908: {
1.49 schwarze 2909: struct tbl_node *tbl;
1.27 schwarze 2910:
2911: if (r->tbl) {
1.94 schwarze 2912: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
2913: ln, ppos, "TS breaks TS");
1.41 schwarze 2914: tbl_end(&r->tbl);
1.27 schwarze 2915: }
2916:
1.49 schwarze 2917: tbl = tbl_alloc(ppos, ln, r->parse);
1.27 schwarze 2918:
2919: if (r->last_tbl)
1.49 schwarze 2920: r->last_tbl->next = tbl;
1.27 schwarze 2921: else
1.49 schwarze 2922: r->first_tbl = r->last_tbl = tbl;
1.27 schwarze 2923:
1.49 schwarze 2924: r->tbl = r->last_tbl = tbl;
1.149 schwarze 2925: return ROFF_IGN;
1.123 schwarze 2926: }
2927:
2928: static enum rofferr
2929: roff_brp(ROFF_ARGS)
2930: {
2931:
2932: buf->buf[pos - 1] = '\0';
1.149 schwarze 2933: return ROFF_CONT;
1.27 schwarze 2934: }
2935:
2936: static enum rofferr
1.48 schwarze 2937: roff_cc(ROFF_ARGS)
2938: {
2939: const char *p;
2940:
1.110 schwarze 2941: p = buf->buf + pos;
1.48 schwarze 2942:
1.110 schwarze 2943: if (*p == '\0' || (r->control = *p++) == '.')
1.48 schwarze 2944: r->control = 0;
2945:
1.110 schwarze 2946: if (*p != '\0')
1.132 schwarze 2947: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
2948: ln, p - buf->buf, "cc ... %s", p);
1.48 schwarze 2949:
1.149 schwarze 2950: return ROFF_IGN;
1.48 schwarze 2951: }
2952:
2953: static enum rofferr
1.42 schwarze 2954: roff_tr(ROFF_ARGS)
2955: {
2956: const char *p, *first, *second;
2957: size_t fsz, ssz;
2958: enum mandoc_esc esc;
2959:
1.110 schwarze 2960: p = buf->buf + pos;
1.42 schwarze 2961:
1.110 schwarze 2962: if (*p == '\0') {
1.132 schwarze 2963: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.149 schwarze 2964: return ROFF_IGN;
1.42 schwarze 2965: }
2966:
1.110 schwarze 2967: while (*p != '\0') {
1.42 schwarze 2968: fsz = ssz = 1;
2969:
2970: first = p++;
1.110 schwarze 2971: if (*first == '\\') {
1.42 schwarze 2972: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 2973: if (esc == ESCAPE_ERROR) {
1.92 schwarze 2974: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 2975: ln, (int)(p - buf->buf), first);
1.149 schwarze 2976: return ROFF_IGN;
1.42 schwarze 2977: }
2978: fsz = (size_t)(p - first);
2979: }
2980:
2981: second = p++;
1.110 schwarze 2982: if (*second == '\\') {
1.42 schwarze 2983: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 2984: if (esc == ESCAPE_ERROR) {
1.92 schwarze 2985: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 2986: ln, (int)(p - buf->buf), second);
1.149 schwarze 2987: return ROFF_IGN;
1.42 schwarze 2988: }
2989: ssz = (size_t)(p - second);
1.110 schwarze 2990: } else if (*second == '\0') {
1.132 schwarze 2991: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
2992: ln, first - buf->buf, "tr %s", first);
1.42 schwarze 2993: second = " ";
2994: p--;
2995: }
2996:
2997: if (fsz > 1) {
1.80 schwarze 2998: roff_setstrn(&r->xmbtab, first, fsz,
2999: second, ssz, 0);
1.42 schwarze 3000: continue;
3001: }
3002:
1.110 schwarze 3003: if (r->xtab == NULL)
1.80 schwarze 3004: r->xtab = mandoc_calloc(128,
3005: sizeof(struct roffstr));
1.42 schwarze 3006:
3007: free(r->xtab[(int)*first].p);
3008: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3009: r->xtab[(int)*first].sz = ssz;
3010: }
3011:
1.149 schwarze 3012: return ROFF_IGN;
1.42 schwarze 3013: }
3014:
3015: static enum rofferr
1.14 schwarze 3016: roff_so(ROFF_ARGS)
3017: {
1.121 schwarze 3018: char *name, *cp;
1.15 schwarze 3019:
1.110 schwarze 3020: name = buf->buf + pos;
1.97 schwarze 3021: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.14 schwarze 3022:
1.22 schwarze 3023: /*
3024: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3025: * opening anything that's not in our cwd or anything beneath
3026: * it. Thus, explicitly disallow traversing up the file-system
3027: * or using absolute paths.
3028: */
3029:
1.110 schwarze 3030: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.83 schwarze 3031: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
3032: ".so %s", name);
1.121 schwarze 3033: buf->sz = mandoc_asprintf(&cp,
3034: ".sp\nSee the file %s.\n.sp", name) + 1;
3035: free(buf->buf);
3036: buf->buf = cp;
3037: *offs = 0;
1.149 schwarze 3038: return ROFF_REPARSE;
1.14 schwarze 3039: }
3040:
3041: *offs = pos;
1.149 schwarze 3042: return ROFF_SO;
1.7 schwarze 3043: }
3044:
1.138 schwarze 3045: /* --- user defined strings and macros ------------------------------------ */
3046:
1.16 schwarze 3047: static enum rofferr
3048: roff_userdef(ROFF_ARGS)
1.12 schwarze 3049: {
1.135 schwarze 3050: const char *arg[9], *ap;
1.16 schwarze 3051: char *cp, *n1, *n2;
1.146 schwarze 3052: int i, ib, ie;
1.135 schwarze 3053: size_t asz, rsz;
1.12 schwarze 3054:
1.16 schwarze 3055: /*
3056: * Collect pointers to macro argument strings
1.61 schwarze 3057: * and NUL-terminate them.
1.16 schwarze 3058: */
1.135 schwarze 3059:
1.145 schwarze 3060: r->argc = 0;
1.110 schwarze 3061: cp = buf->buf + pos;
1.145 schwarze 3062: for (i = 0; i < 9; i++) {
3063: if (*cp == '\0')
3064: arg[i] = "";
3065: else {
3066: arg[i] = mandoc_getarg(r->parse, &cp, ln, &pos);
3067: r->argc = i + 1;
3068: }
3069: }
1.16 schwarze 3070:
3071: /*
3072: * Expand macro arguments.
1.12 schwarze 3073: */
1.135 schwarze 3074:
3075: buf->sz = strlen(r->current_string) + 1;
3076: n1 = cp = mandoc_malloc(buf->sz);
3077: memcpy(n1, r->current_string, buf->sz);
3078: while (*cp != '\0') {
3079:
3080: /* Scan ahead for the next argument invocation. */
3081:
3082: if (*cp++ != '\\')
3083: continue;
3084: if (*cp++ != '$')
3085: continue;
1.146 schwarze 3086: if (*cp == '*') { /* \\$* inserts all arguments */
3087: ib = 0;
3088: ie = r->argc - 1;
3089: } else { /* \\$1 .. \\$9 insert one argument */
3090: ib = ie = *cp - '1';
3091: if (ib < 0 || ib > 8)
3092: continue;
3093: }
1.135 schwarze 3094: cp -= 2;
3095:
3096: /*
3097: * Determine the size of the expanded argument,
3098: * taking escaping of quotes into account.
3099: */
3100:
1.146 schwarze 3101: asz = ie > ib ? ie - ib : 0; /* for blanks */
3102: for (i = ib; i <= ie; i++) {
3103: for (ap = arg[i]; *ap != '\0'; ap++) {
3104: asz++;
3105: if (*ap == '"')
3106: asz += 3;
3107: }
1.135 schwarze 3108: }
3109: if (asz != 3) {
3110:
3111: /*
3112: * Determine the size of the rest of the
3113: * unexpanded macro, including the NUL.
3114: */
3115:
3116: rsz = buf->sz - (cp - n1) - 3;
3117:
3118: /*
3119: * When shrinking, move before
3120: * releasing the storage.
3121: */
3122:
3123: if (asz < 3)
3124: memmove(cp + asz, cp + 3, rsz);
3125:
3126: /*
3127: * Resize the storage for the macro
3128: * and readjust the parse pointer.
3129: */
3130:
3131: buf->sz += asz - 3;
3132: n2 = mandoc_realloc(n1, buf->sz);
3133: cp = n2 + (cp - n1);
3134: n1 = n2;
3135:
3136: /*
3137: * When growing, make room
3138: * for the expanded argument.
3139: */
3140:
3141: if (asz > 3)
3142: memmove(cp + asz, cp + 3, rsz);
3143: }
3144:
3145: /* Copy the expanded argument, escaping quotes. */
3146:
3147: n2 = cp;
1.146 schwarze 3148: for (i = ib; i <= ie; i++) {
3149: for (ap = arg[i]; *ap != '\0'; ap++) {
3150: if (*ap == '"') {
3151: memcpy(n2, "\\(dq", 4);
3152: n2 += 4;
3153: } else
3154: *n2++ = *ap;
3155: }
3156: if (i < ie)
3157: *n2++ = ' ';
1.16 schwarze 3158: }
1.12 schwarze 3159: }
3160:
1.16 schwarze 3161: /*
3162: * Replace the macro invocation
3163: * by the expanded macro.
3164: */
1.135 schwarze 3165:
1.110 schwarze 3166: free(buf->buf);
3167: buf->buf = n1;
1.120 schwarze 3168: *offs = 0;
1.16 schwarze 3169:
1.149 schwarze 3170: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
3171: ROFF_REPARSE : ROFF_APPEND;
1.12 schwarze 3172: }
1.28 schwarze 3173:
1.85 schwarze 3174: static size_t
1.28 schwarze 3175: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3176: {
3177: char *name, *cp;
1.85 schwarze 3178: size_t namesz;
1.28 schwarze 3179:
3180: name = *cpp;
3181: if ('\0' == *name)
1.149 schwarze 3182: return 0;
1.28 schwarze 3183:
1.85 schwarze 3184: /* Read until end of name and terminate it with NUL. */
3185: for (cp = name; 1; cp++) {
3186: if ('\0' == *cp || ' ' == *cp) {
3187: namesz = cp - name;
3188: break;
3189: }
1.28 schwarze 3190: if ('\\' != *cp)
3191: continue;
1.88 schwarze 3192: namesz = cp - name;
3193: if ('{' == cp[1] || '}' == cp[1])
3194: break;
1.28 schwarze 3195: cp++;
3196: if ('\\' == *cp)
3197: continue;
1.97 schwarze 3198: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3199: "%.*s", (int)(cp - name + 1), name);
1.85 schwarze 3200: mandoc_escape((const char **)&cp, NULL, NULL);
3201: break;
1.28 schwarze 3202: }
3203:
3204: /* Read past spaces. */
3205: while (' ' == *cp)
3206: cp++;
3207:
3208: *cpp = cp;
1.149 schwarze 3209: return namesz;
1.28 schwarze 3210: }
3211:
1.16 schwarze 3212: /*
3213: * Store *string into the user-defined string called *name.
3214: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.66 schwarze 3215: * append == 0: replace mode
3216: * append == 1: single-line append mode
3217: * append == 2: multiline append mode, append '\n' after each call
1.16 schwarze 3218: */
1.8 schwarze 3219: static void
1.16 schwarze 3220: roff_setstr(struct roff *r, const char *name, const char *string,
1.66 schwarze 3221: int append)
1.7 schwarze 3222: {
1.42 schwarze 3223:
3224: roff_setstrn(&r->strtab, name, strlen(name), string,
1.80 schwarze 3225: string ? strlen(string) : 0, append);
1.42 schwarze 3226: }
3227:
3228: static void
3229: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.66 schwarze 3230: const char *string, size_t stringsz, int append)
1.42 schwarze 3231: {
3232: struct roffkv *n;
3233: char *c;
3234: int i;
3235: size_t oldch, newch;
1.7 schwarze 3236:
1.16 schwarze 3237: /* Search for an existing string with the same name. */
1.42 schwarze 3238: n = *r;
3239:
1.84 schwarze 3240: while (n && (namesz != n->key.sz ||
3241: strncmp(n->key.p, name, namesz)))
1.7 schwarze 3242: n = n->next;
1.8 schwarze 3243:
3244: if (NULL == n) {
1.16 schwarze 3245: /* Create a new string table entry. */
1.42 schwarze 3246: n = mandoc_malloc(sizeof(struct roffkv));
3247: n->key.p = mandoc_strndup(name, namesz);
3248: n->key.sz = namesz;
3249: n->val.p = NULL;
3250: n->val.sz = 0;
3251: n->next = *r;
3252: *r = n;
1.66 schwarze 3253: } else if (0 == append) {
1.42 schwarze 3254: free(n->val.p);
3255: n->val.p = NULL;
3256: n->val.sz = 0;
1.16 schwarze 3257: }
3258:
3259: if (NULL == string)
3260: return;
3261:
3262: /*
3263: * One additional byte for the '\n' in multiline mode,
3264: * and one for the terminating '\0'.
3265: */
1.66 schwarze 3266: newch = stringsz + (1 < append ? 2u : 1u);
1.42 schwarze 3267:
3268: if (NULL == n->val.p) {
3269: n->val.p = mandoc_malloc(newch);
3270: *n->val.p = '\0';
1.16 schwarze 3271: oldch = 0;
3272: } else {
1.42 schwarze 3273: oldch = n->val.sz;
3274: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.16 schwarze 3275: }
3276:
3277: /* Skip existing content in the destination buffer. */
1.42 schwarze 3278: c = n->val.p + (int)oldch;
1.16 schwarze 3279:
3280: /* Append new content to the destination buffer. */
1.42 schwarze 3281: i = 0;
3282: while (i < (int)stringsz) {
1.16 schwarze 3283: /*
3284: * Rudimentary roff copy mode:
3285: * Handle escaped backslashes.
3286: */
1.42 schwarze 3287: if ('\\' == string[i] && '\\' == string[i + 1])
3288: i++;
3289: *c++ = string[i++];
1.16 schwarze 3290: }
1.8 schwarze 3291:
1.16 schwarze 3292: /* Append terminating bytes. */
1.66 schwarze 3293: if (1 < append)
1.16 schwarze 3294: *c++ = '\n';
1.42 schwarze 3295:
1.16 schwarze 3296: *c = '\0';
1.42 schwarze 3297: n->val.sz = (int)(c - n->val.p);
1.7 schwarze 3298: }
3299:
1.8 schwarze 3300: static const char *
3301: roff_getstrn(const struct roff *r, const char *name, size_t len)
1.7 schwarze 3302: {
1.42 schwarze 3303: const struct roffkv *n;
1.64 schwarze 3304: int i;
1.7 schwarze 3305:
1.42 schwarze 3306: for (n = r->strtab; n; n = n->next)
1.80 schwarze 3307: if (0 == strncmp(name, n->key.p, len) &&
3308: '\0' == n->key.p[(int)len])
1.149 schwarze 3309: return n->val.p;
1.64 schwarze 3310:
3311: for (i = 0; i < PREDEFS_MAX; i++)
3312: if (0 == strncmp(name, predefs[i].name, len) &&
3313: '\0' == predefs[i].name[(int)len])
1.149 schwarze 3314: return predefs[i].str;
1.8 schwarze 3315:
1.149 schwarze 3316: return NULL;
1.7 schwarze 3317: }
3318:
1.8 schwarze 3319: static void
1.42 schwarze 3320: roff_freestr(struct roffkv *r)
1.7 schwarze 3321: {
1.42 schwarze 3322: struct roffkv *n, *nn;
1.7 schwarze 3323:
1.42 schwarze 3324: for (n = r; n; n = nn) {
3325: free(n->key.p);
3326: free(n->val.p);
1.7 schwarze 3327: nn = n->next;
3328: free(n);
3329: }
1.27 schwarze 3330: }
1.138 schwarze 3331:
3332: /* --- accessors and utility functions ------------------------------------ */
1.27 schwarze 3333:
3334: const struct tbl_span *
3335: roff_span(const struct roff *r)
3336: {
1.80 schwarze 3337:
1.149 schwarze 3338: return r->tbl ? tbl_span(r->tbl) : NULL;
1.32 schwarze 3339: }
3340:
3341: const struct eqn *
3342: roff_eqn(const struct roff *r)
3343: {
1.80 schwarze 3344:
1.149 schwarze 3345: return r->last_eqn ? &r->last_eqn->eqn : NULL;
1.42 schwarze 3346: }
3347:
3348: /*
3349: * Duplicate an input string, making the appropriate character
3350: * conversations (as stipulated by `tr') along the way.
3351: * Returns a heap-allocated string with all the replacements made.
3352: */
3353: char *
3354: roff_strdup(const struct roff *r, const char *p)
3355: {
3356: const struct roffkv *cp;
3357: char *res;
3358: const char *pp;
3359: size_t ssz, sz;
3360: enum mandoc_esc esc;
3361:
3362: if (NULL == r->xmbtab && NULL == r->xtab)
1.149 schwarze 3363: return mandoc_strdup(p);
1.42 schwarze 3364: else if ('\0' == *p)
1.149 schwarze 3365: return mandoc_strdup("");
1.42 schwarze 3366:
3367: /*
3368: * Step through each character looking for term matches
3369: * (remember that a `tr' can be invoked with an escape, which is
3370: * a glyph but the escape is multi-character).
3371: * We only do this if the character hash has been initialised
3372: * and the string is >0 length.
3373: */
3374:
3375: res = NULL;
3376: ssz = 0;
3377:
3378: while ('\0' != *p) {
3379: if ('\\' != *p && r->xtab && r->xtab[(int)*p].p) {
3380: sz = r->xtab[(int)*p].sz;
3381: res = mandoc_realloc(res, ssz + sz + 1);
3382: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3383: ssz += sz;
3384: p++;
3385: continue;
3386: } else if ('\\' != *p) {
3387: res = mandoc_realloc(res, ssz + 2);
3388: res[ssz++] = *p++;
3389: continue;
3390: }
3391:
3392: /* Search for term matches. */
3393: for (cp = r->xmbtab; cp; cp = cp->next)
3394: if (0 == strncmp(p, cp->key.p, cp->key.sz))
3395: break;
3396:
3397: if (NULL != cp) {
3398: /*
3399: * A match has been found.
3400: * Append the match to the array and move
3401: * forward by its keysize.
3402: */
1.80 schwarze 3403: res = mandoc_realloc(res,
3404: ssz + cp->val.sz + 1);
1.42 schwarze 3405: memcpy(res + ssz, cp->val.p, cp->val.sz);
3406: ssz += cp->val.sz;
3407: p += (int)cp->key.sz;
3408: continue;
3409: }
3410:
3411: /*
3412: * Handle escapes carefully: we need to copy
3413: * over just the escape itself, or else we might
3414: * do replacements within the escape itself.
3415: * Make sure to pass along the bogus string.
3416: */
3417: pp = p++;
3418: esc = mandoc_escape(&p, NULL, NULL);
3419: if (ESCAPE_ERROR == esc) {
3420: sz = strlen(pp);
3421: res = mandoc_realloc(res, ssz + sz + 1);
3422: memcpy(res + ssz, pp, sz);
3423: break;
3424: }
1.80 schwarze 3425: /*
3426: * We bail out on bad escapes.
1.42 schwarze 3427: * No need to warn: we already did so when
3428: * roff_res() was called.
3429: */
3430: sz = (int)(p - pp);
3431: res = mandoc_realloc(res, ssz + sz + 1);
3432: memcpy(res + ssz, pp, sz);
3433: ssz += sz;
3434: }
3435:
3436: res[(int)ssz] = '\0';
1.149 schwarze 3437: return res;
1.99 schwarze 3438: }
3439:
3440: int
3441: roff_getformat(const struct roff *r)
3442: {
3443:
1.149 schwarze 3444: return r->format;
1.48 schwarze 3445: }
3446:
3447: /*
1.80 schwarze 3448: * Find out whether a line is a macro line or not.
1.48 schwarze 3449: * If it is, adjust the current position and return one; if it isn't,
3450: * return zero and don't change the current position.
3451: * If the control character has been set with `.cc', then let that grain
3452: * precedence.
3453: * This is slighly contrary to groff, where using the non-breaking
3454: * control character when `cc' has been invoked will cause the
3455: * non-breaking macro contents to be printed verbatim.
3456: */
3457: int
3458: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
3459: {
3460: int pos;
3461:
3462: pos = *ppos;
3463:
3464: if (0 != r->control && cp[pos] == r->control)
3465: pos++;
3466: else if (0 != r->control)
1.149 schwarze 3467: return 0;
1.48 schwarze 3468: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
3469: pos += 2;
3470: else if ('.' == cp[pos] || '\'' == cp[pos])
3471: pos++;
3472: else
1.149 schwarze 3473: return 0;
1.48 schwarze 3474:
3475: while (' ' == cp[pos] || '\t' == cp[pos])
3476: pos++;
3477:
3478: *ppos = pos;
1.149 schwarze 3479: return 1;
1.1 schwarze 3480: }