Annotation of src/usr.bin/mandoc/roff.c, Revision 1.158
1.158 ! schwarze 1: /* $OpenBSD: roff.c,v 1.157 2017/01/10 13:46:53 schwarze Exp $ */
1.1 schwarze 2: /*
1.139 schwarze 3: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.119 schwarze 4: * Copyright (c) 2010-2015 Ingo Schwarze <schwarze@openbsd.org>
1.1 schwarze 5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
1.16 schwarze 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.1 schwarze 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.16 schwarze 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.1 schwarze 13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
1.99 schwarze 18: #include <sys/types.h>
19:
1.1 schwarze 20: #include <assert.h>
1.3 schwarze 21: #include <ctype.h>
1.117 schwarze 22: #include <limits.h>
1.51 schwarze 23: #include <stdio.h>
1.1 schwarze 24: #include <stdlib.h>
25: #include <string.h>
26:
27: #include "mandoc.h"
1.74 schwarze 28: #include "mandoc_aux.h"
1.137 schwarze 29: #include "roff.h"
1.98 daniel 30: #include "libmandoc.h"
1.138 schwarze 31: #include "roff_int.h"
1.27 schwarze 32: #include "libroff.h"
1.2 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)
1.157 schwarze 992: n->flags |= NODE_SYNPRETTY;
1.138 schwarze 993: else
1.157 schwarze 994: n->flags &= ~NODE_SYNPRETTY;
1.138 schwarze 995: if (man->flags & MDOC_NEWLINE)
1.157 schwarze 996: n->flags |= NODE_LINE;
1.138 schwarze 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:
1.153 schwarze 1008: if (man->last->next != NULL) {
1009: n->next = man->last->next;
1010: man->last->next->prev = n;
1011: } else
1012: man->last->parent->last = n;
1.138 schwarze 1013: man->last->next = n;
1014: n->prev = man->last;
1015: n->parent = man->last->parent;
1016: break;
1017: case ROFF_NEXT_CHILD:
1018: man->last->child = n;
1019: n->parent = man->last;
1.153 schwarze 1020: n->parent->last = n;
1.138 schwarze 1021: break;
1022: default:
1023: abort();
1024: }
1.154 schwarze 1025: man->last = n;
1.138 schwarze 1026:
1027: switch (n->type) {
1028: case ROFFT_HEAD:
1029: n->parent->head = n;
1030: break;
1031: case ROFFT_BODY:
1.154 schwarze 1032: if (n->end != ENDBODY_NOT)
1033: return;
1.138 schwarze 1034: n->parent->body = n;
1035: break;
1036: case ROFFT_TAIL:
1037: n->parent->tail = n;
1038: break;
1039: default:
1.154 schwarze 1040: return;
1.138 schwarze 1041: }
1.154 schwarze 1042:
1043: /*
1044: * Copy over the normalised-data pointer of our parent. Not
1045: * everybody has one, but copying a null pointer is fine.
1046: */
1047:
1048: n->norm = n->parent->norm;
1049: assert(n->parent->type == ROFFT_BLOCK);
1.138 schwarze 1050: }
1051:
1.139 schwarze 1052: void
1053: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
1054: {
1055: struct roff_node *n;
1056:
1057: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
1058: n->string = roff_strdup(man->roff, word);
1059: roff_node_append(man, n);
1.158 ! schwarze 1060: n->flags |= NODE_VALID | NODE_ENDED;
1.139 schwarze 1061: man->next = ROFF_NEXT_SIBLING;
1062: }
1063:
1064: void
1065: roff_word_append(struct roff_man *man, const char *word)
1066: {
1067: struct roff_node *n;
1068: char *addstr, *newstr;
1069:
1070: n = man->last;
1071: addstr = roff_strdup(man->roff, word);
1072: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
1073: free(addstr);
1074: free(n->string);
1075: n->string = newstr;
1076: man->next = ROFF_NEXT_SIBLING;
1.140 schwarze 1077: }
1078:
1079: void
1080: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
1081: {
1082: struct roff_node *n;
1083:
1084: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
1085: roff_node_append(man, n);
1086: man->next = ROFF_NEXT_CHILD;
1087: }
1088:
1089: struct roff_node *
1090: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
1091: {
1092: struct roff_node *n;
1093:
1094: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
1095: roff_node_append(man, n);
1096: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 1097: return n;
1.139 schwarze 1098: }
1099:
1.138 schwarze 1100: struct roff_node *
1101: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
1102: {
1103: struct roff_node *n;
1104:
1105: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
1106: roff_node_append(man, n);
1107: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 1108: return n;
1.138 schwarze 1109: }
1110:
1111: struct roff_node *
1112: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1113: {
1114: struct roff_node *n;
1115:
1116: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1117: roff_node_append(man, n);
1118: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 1119: return n;
1.139 schwarze 1120: }
1121:
1122: void
1123: roff_addeqn(struct roff_man *man, const struct eqn *eqn)
1124: {
1125: struct roff_node *n;
1126:
1127: n = roff_node_alloc(man, eqn->ln, eqn->pos, ROFFT_EQN, TOKEN_NONE);
1128: n->eqn = eqn;
1129: if (eqn->ln > man->last->line)
1.157 schwarze 1130: n->flags |= NODE_LINE;
1.139 schwarze 1131: roff_node_append(man, n);
1132: man->next = ROFF_NEXT_SIBLING;
1133: }
1134:
1135: void
1136: roff_addtbl(struct roff_man *man, const struct tbl_span *tbl)
1137: {
1138: struct roff_node *n;
1139:
1140: if (man->macroset == MACROSET_MAN)
1141: man_breakscope(man, TOKEN_NONE);
1142: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
1143: n->span = tbl;
1144: roff_node_append(man, n);
1.158 ! schwarze 1145: n->flags |= NODE_VALID | NODE_ENDED;
1.139 schwarze 1146: man->next = ROFF_NEXT_SIBLING;
1.138 schwarze 1147: }
1148:
1149: void
1150: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1151: {
1152:
1153: /* Adjust siblings. */
1154:
1155: if (n->prev)
1156: n->prev->next = n->next;
1157: if (n->next)
1158: n->next->prev = n->prev;
1159:
1160: /* Adjust parent. */
1161:
1162: if (n->parent != NULL) {
1163: if (n->parent->child == n)
1164: n->parent->child = n->next;
1165: if (n->parent->last == n)
1166: n->parent->last = n->prev;
1167: }
1168:
1169: /* Adjust parse point. */
1170:
1171: if (man == NULL)
1172: return;
1173: if (man->last == n) {
1174: if (n->prev == NULL) {
1175: man->last = n->parent;
1176: man->next = ROFF_NEXT_CHILD;
1177: } else {
1178: man->last = n->prev;
1179: man->next = ROFF_NEXT_SIBLING;
1180: }
1181: }
1182: if (man->first == n)
1183: man->first = NULL;
1184: }
1185:
1186: void
1187: roff_node_free(struct roff_node *n)
1188: {
1189:
1190: if (n->args != NULL)
1191: mdoc_argv_free(n->args);
1192: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1193: free(n->norm);
1194: free(n->string);
1195: free(n);
1196: }
1197:
1198: void
1199: roff_node_delete(struct roff_man *man, struct roff_node *n)
1200: {
1201:
1202: while (n->child != NULL)
1203: roff_node_delete(man, n->child);
1204: roff_node_unlink(man, n);
1205: roff_node_free(n);
1.141 schwarze 1206: }
1207:
1208: void
1209: deroff(char **dest, const struct roff_node *n)
1210: {
1211: char *cp;
1212: size_t sz;
1213:
1214: if (n->type != ROFFT_TEXT) {
1215: for (n = n->child; n != NULL; n = n->next)
1216: deroff(dest, n);
1217: return;
1218: }
1219:
1220: /* Skip leading whitespace and escape sequences. */
1221:
1222: cp = n->string;
1223: while (*cp != '\0') {
1224: if ('\\' == *cp) {
1225: cp++;
1226: mandoc_escape((const char **)&cp, NULL, NULL);
1227: } else if (isspace((unsigned char)*cp))
1228: cp++;
1229: else
1230: break;
1231: }
1232:
1233: /* Skip trailing whitespace. */
1234:
1235: for (sz = strlen(cp); sz; sz--)
1236: if ( ! isspace((unsigned char)cp[sz-1]))
1237: break;
1238:
1239: /* Skip empty strings. */
1240:
1241: if (sz == 0)
1242: return;
1243:
1244: if (*dest == NULL) {
1245: *dest = mandoc_strndup(cp, sz);
1246: return;
1247: }
1248:
1249: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1250: free(*dest);
1251: *dest = cp;
1.138 schwarze 1252: }
1253:
1254: /* --- main functions of the roff parser ---------------------------------- */
1255:
1.8 schwarze 1256: /*
1.79 schwarze 1257: * In the current line, expand escape sequences that tend to get
1258: * used in numerical expressions and conditional requests.
1259: * Also check the syntax of the remaining escape sequences.
1.8 schwarze 1260: */
1.45 schwarze 1261: static enum rofferr
1.110 schwarze 1262: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.8 schwarze 1263: {
1.81 schwarze 1264: char ubuf[24]; /* buffer to print the number */
1.78 schwarze 1265: const char *start; /* start of the string to process */
1.82 schwarze 1266: char *stesc; /* start of an escape sequence ('\\') */
1.23 schwarze 1267: const char *stnam; /* start of the name, after "[(*" */
1268: const char *cp; /* end of the name, e.g. before ']' */
1269: const char *res; /* the string to be substituted */
1.110 schwarze 1270: char *nbuf; /* new buffer to copy buf->buf to */
1.53 schwarze 1271: size_t maxl; /* expected length of the escape name */
1272: size_t naml; /* actual length of the escape name */
1.109 schwarze 1273: enum mandoc_esc esc; /* type of the escape sequence */
1274: int inaml; /* length returned from mandoc_escape() */
1.53 schwarze 1275: int expand_count; /* to avoid infinite loops */
1.79 schwarze 1276: int npos; /* position in numeric expression */
1.91 schwarze 1277: int arg_complete; /* argument not interrupted by eol */
1.79 schwarze 1278: char term; /* character terminating the escape */
1.8 schwarze 1279:
1.43 schwarze 1280: expand_count = 0;
1.110 schwarze 1281: start = buf->buf + pos;
1.78 schwarze 1282: stesc = strchr(start, '\0') - 1;
1283: while (stesc-- > start) {
1.43 schwarze 1284:
1.78 schwarze 1285: /* Search backwards for the next backslash. */
1286:
1.110 schwarze 1287: if (*stesc != '\\')
1.78 schwarze 1288: continue;
1289:
1290: /* If it is escaped, skip it. */
1291:
1292: for (cp = stesc - 1; cp >= start; cp--)
1.110 schwarze 1293: if (*cp != '\\')
1.78 schwarze 1294: break;
1295:
1.110 schwarze 1296: if ((stesc - cp) % 2 == 0) {
1.82 schwarze 1297: stesc = (char *)cp;
1.78 schwarze 1298: continue;
1299: }
1.23 schwarze 1300:
1.79 schwarze 1301: /* Decide whether to expand or to check only. */
1.23 schwarze 1302:
1.79 schwarze 1303: term = '\0';
1.78 schwarze 1304: cp = stesc + 1;
1.53 schwarze 1305: switch (*cp) {
1.80 schwarze 1306: case '*':
1.53 schwarze 1307: res = NULL;
1308: break;
1.80 schwarze 1309: case 'B':
1310: case 'w':
1.79 schwarze 1311: term = cp[1];
1312: /* FALLTHROUGH */
1.80 schwarze 1313: case 'n':
1.53 schwarze 1314: res = ubuf;
1315: break;
1316: default:
1.109 schwarze 1317: esc = mandoc_escape(&cp, &stnam, &inaml);
1318: if (esc == ESCAPE_ERROR ||
1319: (esc == ESCAPE_SPECIAL &&
1.151 schwarze 1320: mchars_spec2cp(stnam, inaml) < 0))
1.92 schwarze 1321: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.110 schwarze 1322: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1323: "%.*s", (int)(cp - stesc), stesc);
1.78 schwarze 1324: continue;
1.42 schwarze 1325: }
1326:
1.78 schwarze 1327: if (EXPAND_LIMIT < ++expand_count) {
1328: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.110 schwarze 1329: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1330: return ROFF_IGN;
1.78 schwarze 1331: }
1.23 schwarze 1332:
1333: /*
1334: * The third character decides the length
1.53 schwarze 1335: * of the name of the string or register.
1.23 schwarze 1336: * Save a pointer to the name.
1337: */
1338:
1.110 schwarze 1339: if (term == '\0') {
1.79 schwarze 1340: switch (*++cp) {
1.80 schwarze 1341: case '\0':
1.79 schwarze 1342: maxl = 0;
1343: break;
1.80 schwarze 1344: case '(':
1.79 schwarze 1345: cp++;
1346: maxl = 2;
1347: break;
1.80 schwarze 1348: case '[':
1.79 schwarze 1349: cp++;
1350: term = ']';
1351: maxl = 0;
1352: break;
1353: default:
1354: maxl = 1;
1355: break;
1356: }
1357: } else {
1358: cp += 2;
1.8 schwarze 1359: maxl = 0;
1360: }
1.23 schwarze 1361: stnam = cp;
1.8 schwarze 1362:
1.23 schwarze 1363: /* Advance to the end of the name. */
1.8 schwarze 1364:
1.125 schwarze 1365: naml = 0;
1.91 schwarze 1366: arg_complete = 1;
1.125 schwarze 1367: while (maxl == 0 || naml < maxl) {
1.110 schwarze 1368: if (*cp == '\0') {
1.92 schwarze 1369: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 1370: ln, (int)(stesc - buf->buf), stesc);
1.91 schwarze 1371: arg_complete = 0;
1.79 schwarze 1372: break;
1.42 schwarze 1373: }
1.110 schwarze 1374: if (maxl == 0 && *cp == term) {
1.79 schwarze 1375: cp++;
1.125 schwarze 1376: break;
1377: }
1378: if (*cp++ != '\\' || stesc[1] != 'w') {
1379: naml++;
1380: continue;
1381: }
1382: switch (mandoc_escape(&cp, NULL, NULL)) {
1383: case ESCAPE_SPECIAL:
1384: case ESCAPE_UNICODE:
1385: case ESCAPE_NUMBERED:
1386: case ESCAPE_OVERSTRIKE:
1387: naml++;
1388: break;
1389: default:
1.8 schwarze 1390: break;
1.79 schwarze 1391: }
1.8 schwarze 1392: }
1393:
1.23 schwarze 1394: /*
1395: * Retrieve the replacement string; if it is
1396: * undefined, resume searching for escapes.
1397: */
1398:
1.79 schwarze 1399: switch (stesc[1]) {
1.80 schwarze 1400: case '*':
1.91 schwarze 1401: if (arg_complete)
1402: res = roff_getstrn(r, stnam, naml);
1.79 schwarze 1403: break;
1.80 schwarze 1404: case 'B':
1.79 schwarze 1405: npos = 0;
1.91 schwarze 1406: ubuf[0] = arg_complete &&
1.133 schwarze 1407: roff_evalnum(r, ln, stnam, &npos,
1408: NULL, ROFFNUM_SCALE) &&
1.91 schwarze 1409: stnam + npos + 1 == cp ? '1' : '0';
1.79 schwarze 1410: ubuf[1] = '\0';
1411: break;
1.80 schwarze 1412: case 'n':
1.91 schwarze 1413: if (arg_complete)
1414: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1415: roff_getregn(r, stnam, naml));
1416: else
1417: ubuf[0] = '\0';
1.79 schwarze 1418: break;
1.80 schwarze 1419: case 'w':
1.91 schwarze 1420: /* use even incomplete args */
1.81 schwarze 1421: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.79 schwarze 1422: 24 * (int)naml);
1423: break;
1424: }
1.8 schwarze 1425:
1.110 schwarze 1426: if (res == NULL) {
1.92 schwarze 1427: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1428: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1429: "%.*s", (int)naml, stnam);
1.37 schwarze 1430: res = "";
1.118 schwarze 1431: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1432: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1433: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1434: return ROFF_IGN;
1.8 schwarze 1435: }
1436:
1.23 schwarze 1437: /* Replace the escape sequence by the string. */
1438:
1.82 schwarze 1439: *stesc = '\0';
1.110 schwarze 1440: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1441: buf->buf, res, cp) + 1;
1.8 schwarze 1442:
1.78 schwarze 1443: /* Prepare for the next replacement. */
1.8 schwarze 1444:
1.78 schwarze 1445: start = nbuf + pos;
1.110 schwarze 1446: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1447: free(buf->buf);
1448: buf->buf = nbuf;
1.42 schwarze 1449: }
1.149 schwarze 1450: return ROFF_CONT;
1.42 schwarze 1451: }
1452:
1453: /*
1.147 schwarze 1454: * Process text streams.
1.42 schwarze 1455: */
1456: static enum rofferr
1.110 schwarze 1457: roff_parsetext(struct buf *buf, int pos, int *offs)
1.42 schwarze 1458: {
1459: size_t sz;
1460: const char *start;
1.51 schwarze 1461: char *p;
1462: int isz;
1.42 schwarze 1463: enum mandoc_esc esc;
1464:
1.147 schwarze 1465: /* Spring the input line trap. */
1466:
1467: if (roffit_lines == 1) {
1468: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1469: free(buf->buf);
1470: buf->buf = p;
1471: buf->sz = isz + 1;
1472: *offs = 0;
1473: free(roffit_macro);
1474: roffit_lines = 0;
1.149 schwarze 1475: return ROFF_REPARSE;
1.147 schwarze 1476: } else if (roffit_lines > 1)
1477: --roffit_lines;
1478:
1479: /* Convert all breakable hyphens into ASCII_HYPH. */
1480:
1.110 schwarze 1481: start = p = buf->buf + pos;
1.42 schwarze 1482:
1.110 schwarze 1483: while (*p != '\0') {
1.42 schwarze 1484: sz = strcspn(p, "-\\");
1485: p += sz;
1486:
1.110 schwarze 1487: if (*p == '\0')
1.42 schwarze 1488: break;
1489:
1.110 schwarze 1490: if (*p == '\\') {
1.42 schwarze 1491: /* Skip over escapes. */
1492: p++;
1.62 schwarze 1493: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.110 schwarze 1494: if (esc == ESCAPE_ERROR)
1.42 schwarze 1495: break;
1.136 schwarze 1496: while (*p == '-')
1497: p++;
1.42 schwarze 1498: continue;
1499: } else if (p == start) {
1500: p++;
1501: continue;
1502: }
1503:
1.44 schwarze 1504: if (isalpha((unsigned char)p[-1]) &&
1505: isalpha((unsigned char)p[1]))
1.42 schwarze 1506: *p = ASCII_HYPH;
1507: p++;
1.8 schwarze 1508: }
1.149 schwarze 1509: return ROFF_CONT;
1.8 schwarze 1510: }
1511:
1.1 schwarze 1512: enum rofferr
1.110 schwarze 1513: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.1 schwarze 1514: {
1515: enum rofft t;
1.27 schwarze 1516: enum rofferr e;
1.110 schwarze 1517: int pos; /* parse point */
1.115 schwarze 1518: int spos; /* saved parse point for messages */
1.110 schwarze 1519: int ppos; /* original offset in buf->buf */
1520: int ctl; /* macro line (boolean) */
1521:
1522: ppos = pos = *offs;
1.1 schwarze 1523:
1.102 schwarze 1524: /* Handle in-line equation delimiters. */
1525:
1.108 schwarze 1526: if (r->tbl == NULL &&
1527: r->last_eqn != NULL && r->last_eqn->delim &&
1.102 schwarze 1528: (r->eqn == NULL || r->eqn_inline)) {
1.110 schwarze 1529: e = roff_eqndelim(r, buf, pos);
1.102 schwarze 1530: if (e == ROFF_REPARSE)
1.149 schwarze 1531: return e;
1.102 schwarze 1532: assert(e == ROFF_CONT);
1533: }
1534:
1535: /* Expand some escape sequences. */
1.8 schwarze 1536:
1.110 schwarze 1537: e = roff_res(r, buf, ln, pos);
1538: if (e == ROFF_IGN)
1.149 schwarze 1539: return e;
1.110 schwarze 1540: assert(e == ROFF_CONT);
1.8 schwarze 1541:
1.110 schwarze 1542: ctl = roff_getcontrol(r, buf->buf, &pos);
1.35 schwarze 1543:
1.8 schwarze 1544: /*
1.2 schwarze 1545: * First, if a scope is open and we're not a macro, pass the
1.124 schwarze 1546: * text through the macro's filter.
1547: * Equations process all content themselves.
1548: * Tables process almost all content themselves, but we want
1549: * to warn about macros before passing it there.
1.2 schwarze 1550: */
1551:
1.124 schwarze 1552: if (r->last != NULL && ! ctl) {
1.2 schwarze 1553: t = r->last->tok;
1554: assert(roffs[t].text);
1.110 schwarze 1555: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1556: assert(e == ROFF_IGN || e == ROFF_CONT);
1557: if (e != ROFF_CONT)
1.149 schwarze 1558: return e;
1.54 schwarze 1559: }
1.124 schwarze 1560: if (r->eqn != NULL)
1.149 schwarze 1561: return eqn_read(&r->eqn, ln, buf->buf, ppos, offs);
1.124 schwarze 1562: if (r->tbl != NULL && ( ! ctl || buf->buf[pos] == '\0'))
1.149 schwarze 1563: return tbl_read(r->tbl, ln, buf->buf, ppos);
1.124 schwarze 1564: if ( ! ctl)
1.149 schwarze 1565: return roff_parsetext(buf, pos, offs);
1.100 schwarze 1566:
1567: /* Skip empty request lines. */
1568:
1.110 schwarze 1569: if (buf->buf[pos] == '"') {
1.100 schwarze 1570: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1571: ln, pos, NULL);
1.149 schwarze 1572: return ROFF_IGN;
1.110 schwarze 1573: } else if (buf->buf[pos] == '\0')
1.149 schwarze 1574: return ROFF_IGN;
1.2 schwarze 1575:
1576: /*
1577: * If a scope is open, go to the child handler for that macro,
1578: * as it may want to preprocess before doing anything with it.
1.32 schwarze 1579: * Don't do so if an equation is open.
1.2 schwarze 1580: */
1581:
1582: if (r->last) {
1.1 schwarze 1583: t = r->last->tok;
1584: assert(roffs[t].sub);
1.149 schwarze 1585: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1586: }
1587:
1.115 schwarze 1588: /* No scope is open. This is a new request or macro. */
1589:
1590: spos = pos;
1591: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1592:
1593: /* Tables ignore most macros. */
1594:
1595: if (r->tbl != NULL && (t == ROFF_MAX || t == ROFF_TS)) {
1596: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1597: ln, pos, buf->buf + spos);
1.129 schwarze 1598: if (t == ROFF_TS)
1.149 schwarze 1599: return ROFF_IGN;
1.129 schwarze 1600: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1601: pos++;
1602: while (buf->buf[pos] != '\0' && buf->buf[pos] == ' ')
1603: pos++;
1.149 schwarze 1604: return tbl_read(r->tbl, ln, buf->buf, pos);
1.115 schwarze 1605: }
1606:
1.2 schwarze 1607: /*
1.115 schwarze 1608: * This is neither a roff request nor a user-defined macro.
1609: * Let the standard macro set parsers handle it.
1.2 schwarze 1610: */
1611:
1.115 schwarze 1612: if (t == ROFF_MAX)
1.149 schwarze 1613: return ROFF_CONT;
1.115 schwarze 1614:
1615: /* Execute a roff request or a user defined macro. */
1.1 schwarze 1616:
1.2 schwarze 1617: assert(roffs[t].proc);
1.149 schwarze 1618: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1619: }
1620:
1.27 schwarze 1621: void
1.2 schwarze 1622: roff_endparse(struct roff *r)
1623: {
1.1 schwarze 1624:
1.27 schwarze 1625: if (r->last)
1.94 schwarze 1626: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1627: r->last->line, r->last->col,
1628: roffs[r->last->tok].name);
1.27 schwarze 1629:
1.32 schwarze 1630: if (r->eqn) {
1.94 schwarze 1631: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1632: r->eqn->eqn.ln, r->eqn->eqn.pos, "EQ");
1.41 schwarze 1633: eqn_end(&r->eqn);
1.32 schwarze 1634: }
1635:
1.27 schwarze 1636: if (r->tbl) {
1.94 schwarze 1637: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1638: r->tbl->line, r->tbl->pos, "TS");
1.41 schwarze 1639: tbl_end(&r->tbl);
1.27 schwarze 1640: }
1.1 schwarze 1641: }
1642:
1643: /*
1644: * Parse a roff node's type from the input buffer. This must be in the
1645: * form of ".foo xxx" in the usual way.
1646: */
1647: static enum rofft
1.87 schwarze 1648: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.1 schwarze 1649: {
1.87 schwarze 1650: char *cp;
1.16 schwarze 1651: const char *mac;
1652: size_t maclen;
1.1 schwarze 1653: enum rofft t;
1654:
1.87 schwarze 1655: cp = buf + *pos;
1656:
1657: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.149 schwarze 1658: return ROFF_MAX;
1.1 schwarze 1659:
1.87 schwarze 1660: mac = cp;
1661: maclen = roff_getname(r, &cp, ln, ppos);
1.1 schwarze 1662:
1.16 schwarze 1663: t = (r->current_string = roff_getstrn(r, mac, maclen))
1.42 schwarze 1664: ? ROFF_USERDEF : roffhash_find(mac, maclen);
1.1 schwarze 1665:
1.87 schwarze 1666: if (ROFF_MAX != t)
1667: *pos = cp - buf;
1.1 schwarze 1668:
1.149 schwarze 1669: return t;
1.1 schwarze 1670: }
1671:
1.138 schwarze 1672: /* --- handling of request blocks ----------------------------------------- */
1673:
1.1 schwarze 1674: static enum rofferr
1.2 schwarze 1675: roff_cblock(ROFF_ARGS)
1.1 schwarze 1676: {
1677:
1.2 schwarze 1678: /*
1679: * A block-close `..' should only be invoked as a child of an
1680: * ignore macro, otherwise raise a warning and just ignore it.
1681: */
1682:
1.110 schwarze 1683: if (r->last == NULL) {
1.94 schwarze 1684: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1685: ln, ppos, "..");
1.149 schwarze 1686: return ROFF_IGN;
1.2 schwarze 1687: }
1.1 schwarze 1688:
1.2 schwarze 1689: switch (r->last->tok) {
1.80 schwarze 1690: case ROFF_am:
1.93 schwarze 1691: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.80 schwarze 1692: case ROFF_ami:
1693: case ROFF_de:
1.23 schwarze 1694: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.80 schwarze 1695: case ROFF_dei:
1696: case ROFF_ig:
1.2 schwarze 1697: break;
1698: default:
1.94 schwarze 1699: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1700: ln, ppos, "..");
1.149 schwarze 1701: return ROFF_IGN;
1.2 schwarze 1702: }
1703:
1.110 schwarze 1704: if (buf->buf[pos] != '\0')
1.90 schwarze 1705: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 1706: ".. %s", buf->buf + pos);
1.2 schwarze 1707:
1708: roffnode_pop(r);
1709: roffnode_cleanscope(r);
1.149 schwarze 1710: return ROFF_IGN;
1.2 schwarze 1711:
1712: }
1.1 schwarze 1713:
1.2 schwarze 1714: static void
1715: roffnode_cleanscope(struct roff *r)
1716: {
1.1 schwarze 1717:
1.2 schwarze 1718: while (r->last) {
1.46 schwarze 1719: if (--r->last->endspan != 0)
1.2 schwarze 1720: break;
1721: roffnode_pop(r);
1722: }
1723: }
1.1 schwarze 1724:
1.68 schwarze 1725: static void
1726: roff_ccond(struct roff *r, int ln, int ppos)
1.2 schwarze 1727: {
1.1 schwarze 1728:
1.2 schwarze 1729: if (NULL == r->last) {
1.94 schwarze 1730: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1731: ln, ppos, "\\}");
1.68 schwarze 1732: return;
1.2 schwarze 1733: }
1.1 schwarze 1734:
1.2 schwarze 1735: switch (r->last->tok) {
1.80 schwarze 1736: case ROFF_el:
1737: case ROFF_ie:
1738: case ROFF_if:
1.2 schwarze 1739: break;
1740: default:
1.94 schwarze 1741: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1742: ln, ppos, "\\}");
1.68 schwarze 1743: return;
1.2 schwarze 1744: }
1.1 schwarze 1745:
1.2 schwarze 1746: if (r->last->endspan > -1) {
1.94 schwarze 1747: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1748: ln, ppos, "\\}");
1.68 schwarze 1749: return;
1.2 schwarze 1750: }
1751:
1752: roffnode_pop(r);
1753: roffnode_cleanscope(r);
1.68 schwarze 1754: return;
1.1 schwarze 1755: }
1756:
1757: static enum rofferr
1.2 schwarze 1758: roff_block(ROFF_ARGS)
1.1 schwarze 1759: {
1.93 schwarze 1760: const char *name;
1761: char *iname, *cp;
1.86 schwarze 1762: size_t namesz;
1.16 schwarze 1763:
1.93 schwarze 1764: /* Ignore groff compatibility mode for now. */
1.2 schwarze 1765:
1.110 schwarze 1766: if (tok == ROFF_de1)
1.93 schwarze 1767: tok = ROFF_de;
1.123 schwarze 1768: else if (tok == ROFF_dei1)
1769: tok = ROFF_dei;
1.110 schwarze 1770: else if (tok == ROFF_am1)
1.93 schwarze 1771: tok = ROFF_am;
1.123 schwarze 1772: else if (tok == ROFF_ami1)
1773: tok = ROFF_ami;
1.93 schwarze 1774:
1775: /* Parse the macro name argument. */
1776:
1.110 schwarze 1777: cp = buf->buf + pos;
1778: if (tok == ROFF_ig) {
1.93 schwarze 1779: iname = NULL;
1780: namesz = 0;
1781: } else {
1782: iname = cp;
1783: namesz = roff_getname(r, &cp, ln, ppos);
1784: iname[namesz] = '\0';
1785: }
1.22 schwarze 1786:
1.93 schwarze 1787: /* Resolve the macro name argument if it is indirect. */
1.22 schwarze 1788:
1.110 schwarze 1789: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1790: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.93 schwarze 1791: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1792: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1793: "%.*s", (int)namesz, iname);
1794: namesz = 0;
1795: } else
1796: namesz = strlen(name);
1797: } else
1798: name = iname;
1.22 schwarze 1799:
1.110 schwarze 1800: if (namesz == 0 && tok != ROFF_ig) {
1.93 schwarze 1801: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1802: ln, ppos, roffs[tok].name);
1.149 schwarze 1803: return ROFF_IGN;
1.93 schwarze 1804: }
1.2 schwarze 1805:
1.16 schwarze 1806: roffnode_push(r, tok, name, ln, ppos);
1807:
1808: /*
1809: * At the beginning of a `de' macro, clear the existing string
1810: * with the same name, if there is one. New content will be
1.66 schwarze 1811: * appended from roff_block_text() in multiline mode.
1.16 schwarze 1812: */
1.22 schwarze 1813:
1.110 schwarze 1814: if (tok == ROFF_de || tok == ROFF_dei)
1.86 schwarze 1815: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.2 schwarze 1816:
1.110 schwarze 1817: if (*cp == '\0')
1.149 schwarze 1818: return ROFF_IGN;
1.1 schwarze 1819:
1.93 schwarze 1820: /* Get the custom end marker. */
1.22 schwarze 1821:
1.93 schwarze 1822: iname = cp;
1.86 schwarze 1823: namesz = roff_getname(r, &cp, ln, ppos);
1.93 schwarze 1824:
1825: /* Resolve the end marker if it is indirect. */
1826:
1.110 schwarze 1827: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1828: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.93 schwarze 1829: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1830: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1831: "%.*s", (int)namesz, iname);
1832: namesz = 0;
1833: } else
1834: namesz = strlen(name);
1835: } else
1836: name = iname;
1837:
1.86 schwarze 1838: if (namesz)
1839: r->last->end = mandoc_strndup(name, namesz);
1.2 schwarze 1840:
1.110 schwarze 1841: if (*cp != '\0')
1.90 schwarze 1842: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1843: ln, pos, ".%s ... %s", roffs[tok].name, cp);
1.1 schwarze 1844:
1.149 schwarze 1845: return ROFF_IGN;
1.1 schwarze 1846: }
1847:
1848: static enum rofferr
1.2 schwarze 1849: roff_block_sub(ROFF_ARGS)
1.1 schwarze 1850: {
1.2 schwarze 1851: enum rofft t;
1852: int i, j;
1853:
1854: /*
1855: * First check whether a custom macro exists at this level. If
1856: * it does, then check against it. This is some of groff's
1857: * stranger behaviours. If we encountered a custom end-scope
1858: * tag and that tag also happens to be a "real" macro, then we
1859: * need to try interpreting it again as a real macro. If it's
1860: * not, then return ignore. Else continue.
1861: */
1862:
1863: if (r->last->end) {
1.35 schwarze 1864: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.110 schwarze 1865: if (buf->buf[i] != r->last->end[j])
1.2 schwarze 1866: break;
1.1 schwarze 1867:
1.110 schwarze 1868: if (r->last->end[j] == '\0' &&
1869: (buf->buf[i] == '\0' ||
1870: buf->buf[i] == ' ' ||
1871: buf->buf[i] == '\t')) {
1.2 schwarze 1872: roffnode_pop(r);
1873: roffnode_cleanscope(r);
1.1 schwarze 1874:
1.110 schwarze 1875: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.35 schwarze 1876: i++;
1877:
1878: pos = i;
1.110 schwarze 1879: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1880: ROFF_MAX)
1.149 schwarze 1881: return ROFF_RERUN;
1882: return ROFF_IGN;
1.2 schwarze 1883: }
1.1 schwarze 1884: }
1885:
1.2 schwarze 1886: /*
1887: * If we have no custom end-query or lookup failed, then try
1888: * pulling it out of the hashtable.
1889: */
1.1 schwarze 1890:
1.110 schwarze 1891: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.1 schwarze 1892:
1.110 schwarze 1893: if (t != ROFF_cblock) {
1894: if (tok != ROFF_ig)
1895: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.149 schwarze 1896: return ROFF_IGN;
1.16 schwarze 1897: }
1.1 schwarze 1898:
1.2 schwarze 1899: assert(roffs[t].proc);
1.149 schwarze 1900: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1901: }
1902:
1903: static enum rofferr
1904: roff_block_text(ROFF_ARGS)
1905: {
1906:
1.110 schwarze 1907: if (tok != ROFF_ig)
1908: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.16 schwarze 1909:
1.149 schwarze 1910: return ROFF_IGN;
1.2 schwarze 1911: }
1912:
1913: static enum rofferr
1914: roff_cond_sub(ROFF_ARGS)
1915: {
1916: enum rofft t;
1.37 schwarze 1917: char *ep;
1.71 schwarze 1918: int rr;
1.2 schwarze 1919:
1920: rr = r->last->rule;
1.37 schwarze 1921: roffnode_cleanscope(r);
1.110 schwarze 1922: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.2 schwarze 1923:
1.37 schwarze 1924: /*
1.50 schwarze 1925: * Fully handle known macros when they are structurally
1926: * required or when the conditional evaluated to true.
1.5 schwarze 1927: */
1928:
1.110 schwarze 1929: if ((t != ROFF_MAX) &&
1930: (rr || roffs[t].flags & ROFFMAC_STRUCT)) {
1.50 schwarze 1931: assert(roffs[t].proc);
1.149 schwarze 1932: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.50 schwarze 1933: }
1.39 schwarze 1934:
1.69 schwarze 1935: /*
1936: * If `\}' occurs on a macro line without a preceding macro,
1937: * drop the line completely.
1938: */
1939:
1.110 schwarze 1940: ep = buf->buf + pos;
1941: if (ep[0] == '\\' && ep[1] == '}')
1.71 schwarze 1942: rr = 0;
1.69 schwarze 1943:
1.50 schwarze 1944: /* Always check for the closing delimiter `\}'. */
1.39 schwarze 1945:
1.110 schwarze 1946: while ((ep = strchr(ep, '\\')) != NULL) {
1947: if (*(++ep) == '}') {
1.70 schwarze 1948: *ep = '&';
1.110 schwarze 1949: roff_ccond(r, ln, ep - buf->buf - 1);
1.70 schwarze 1950: }
1.119 schwarze 1951: if (*ep != '\0')
1952: ++ep;
1.50 schwarze 1953: }
1.149 schwarze 1954: return rr ? ROFF_CONT : ROFF_IGN;
1.2 schwarze 1955: }
1956:
1957: static enum rofferr
1958: roff_cond_text(ROFF_ARGS)
1959: {
1.37 schwarze 1960: char *ep;
1.71 schwarze 1961: int rr;
1.2 schwarze 1962:
1963: rr = r->last->rule;
1.37 schwarze 1964: roffnode_cleanscope(r);
1.1 schwarze 1965:
1.110 schwarze 1966: ep = buf->buf + pos;
1967: while ((ep = strchr(ep, '\\')) != NULL) {
1968: if (*(++ep) == '}') {
1.70 schwarze 1969: *ep = '&';
1.110 schwarze 1970: roff_ccond(r, ln, ep - buf->buf - 1);
1.70 schwarze 1971: }
1.119 schwarze 1972: if (*ep != '\0')
1973: ++ep;
1.2 schwarze 1974: }
1.149 schwarze 1975: return rr ? ROFF_CONT : ROFF_IGN;
1.2 schwarze 1976: }
1977:
1.138 schwarze 1978: /* --- handling of numeric and conditional expressions -------------------- */
1979:
1.77 schwarze 1980: /*
1981: * Parse a single signed integer number. Stop at the first non-digit.
1982: * If there is at least one digit, return success and advance the
1983: * parse point, else return failure and let the parse point unchanged.
1984: * Ignore overflows, treat them just like the C language.
1985: */
1.56 schwarze 1986: static int
1.133 schwarze 1987: roff_getnum(const char *v, int *pos, int *res, int flags)
1.56 schwarze 1988: {
1.133 schwarze 1989: int myres, scaled, n, p;
1.79 schwarze 1990:
1991: if (NULL == res)
1992: res = &myres;
1.56 schwarze 1993:
1994: p = *pos;
1995: n = v[p] == '-';
1.133 schwarze 1996: if (n || v[p] == '+')
1.56 schwarze 1997: p++;
1998:
1.133 schwarze 1999: if (flags & ROFFNUM_WHITE)
2000: while (isspace((unsigned char)v[p]))
2001: p++;
2002:
1.56 schwarze 2003: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.77 schwarze 2004: *res = 10 * *res + v[p] - '0';
1.56 schwarze 2005: if (p == *pos + n)
2006: return 0;
2007:
2008: if (n)
2009: *res = -*res;
2010:
1.126 schwarze 2011: /* Each number may be followed by one optional scaling unit. */
2012:
2013: switch (v[p]) {
2014: case 'f':
1.133 schwarze 2015: scaled = *res * 65536;
1.126 schwarze 2016: break;
2017: case 'i':
1.133 schwarze 2018: scaled = *res * 240;
1.126 schwarze 2019: break;
2020: case 'c':
1.133 schwarze 2021: scaled = *res * 240 / 2.54;
1.126 schwarze 2022: break;
2023: case 'v':
2024: case 'P':
1.133 schwarze 2025: scaled = *res * 40;
1.126 schwarze 2026: break;
2027: case 'm':
2028: case 'n':
1.133 schwarze 2029: scaled = *res * 24;
1.126 schwarze 2030: break;
2031: case 'p':
1.133 schwarze 2032: scaled = *res * 10 / 3;
1.126 schwarze 2033: break;
2034: case 'u':
1.133 schwarze 2035: scaled = *res;
1.126 schwarze 2036: break;
2037: case 'M':
1.133 schwarze 2038: scaled = *res * 6 / 25;
1.126 schwarze 2039: break;
2040: default:
1.133 schwarze 2041: scaled = *res;
1.126 schwarze 2042: p--;
2043: break;
2044: }
1.133 schwarze 2045: if (flags & ROFFNUM_SCALE)
2046: *res = scaled;
1.126 schwarze 2047:
2048: *pos = p + 1;
1.149 schwarze 2049: return 1;
1.56 schwarze 2050: }
2051:
1.71 schwarze 2052: /*
2053: * Evaluate a string comparison condition.
2054: * The first character is the delimiter.
2055: * Succeed if the string up to its second occurrence
2056: * matches the string up to its third occurence.
2057: * Advance the cursor after the third occurrence
2058: * or lacking that, to the end of the line.
2059: */
2060: static int
2061: roff_evalstrcond(const char *v, int *pos)
2062: {
2063: const char *s1, *s2, *s3;
2064: int match;
2065:
2066: match = 0;
2067: s1 = v + *pos; /* initial delimiter */
2068: s2 = s1 + 1; /* for scanning the first string */
2069: s3 = strchr(s2, *s1); /* for scanning the second string */
2070:
2071: if (NULL == s3) /* found no middle delimiter */
2072: goto out;
2073:
2074: while ('\0' != *++s3) {
2075: if (*s2 != *s3) { /* mismatch */
2076: s3 = strchr(s3, *s1);
2077: break;
2078: }
2079: if (*s3 == *s1) { /* found the final delimiter */
2080: match = 1;
2081: break;
2082: }
2083: s2++;
2084: }
2085:
2086: out:
2087: if (NULL == s3)
2088: s3 = strchr(s2, '\0');
1.114 schwarze 2089: else if (*s3 != '\0')
1.71 schwarze 2090: s3++;
2091: *pos = s3 - v;
1.149 schwarze 2092: return match;
1.71 schwarze 2093: }
2094:
1.77 schwarze 2095: /*
2096: * Evaluate an optionally negated single character, numerical,
2097: * or string condition.
2098: */
1.71 schwarze 2099: static int
1.143 schwarze 2100: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.5 schwarze 2101: {
1.143 schwarze 2102: char *cp, *name;
2103: size_t sz;
1.113 schwarze 2104: int number, savepos, wanttrue;
1.5 schwarze 2105:
1.71 schwarze 2106: if ('!' == v[*pos]) {
2107: wanttrue = 0;
2108: (*pos)++;
2109: } else
2110: wanttrue = 1;
2111:
1.5 schwarze 2112: switch (v[*pos]) {
1.112 schwarze 2113: case '\0':
1.149 schwarze 2114: return 0;
1.80 schwarze 2115: case 'n':
2116: case 'o':
1.5 schwarze 2117: (*pos)++;
1.149 schwarze 2118: return wanttrue;
1.80 schwarze 2119: case 'c':
2120: case 'd':
2121: case 'e':
2122: case 't':
1.111 schwarze 2123: case 'v':
1.5 schwarze 2124: (*pos)++;
1.149 schwarze 2125: return !wanttrue;
1.143 schwarze 2126: case 'r':
2127: cp = name = v + ++*pos;
2128: sz = roff_getname(r, &cp, ln, *pos);
2129: *pos = cp - v;
1.149 schwarze 2130: return (sz && roff_hasregn(r, name, sz)) == wanttrue;
1.5 schwarze 2131: default:
2132: break;
2133: }
2134:
1.113 schwarze 2135: savepos = *pos;
1.133 schwarze 2136: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.149 schwarze 2137: return (number > 0) == wanttrue;
1.113 schwarze 2138: else if (*pos == savepos)
1.149 schwarze 2139: return roff_evalstrcond(v, pos) == wanttrue;
1.77 schwarze 2140: else
1.149 schwarze 2141: return 0;
1.5 schwarze 2142: }
2143:
1.2 schwarze 2144: static enum rofferr
1.21 schwarze 2145: roff_line_ignore(ROFF_ARGS)
1.6 schwarze 2146: {
1.30 schwarze 2147:
1.149 schwarze 2148: return ROFF_IGN;
1.21 schwarze 2149: }
2150:
2151: static enum rofferr
1.123 schwarze 2152: roff_insec(ROFF_ARGS)
2153: {
2154:
2155: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
2156: ln, ppos, roffs[tok].name);
1.149 schwarze 2157: return ROFF_IGN;
1.123 schwarze 2158: }
2159:
2160: static enum rofferr
2161: roff_unsupp(ROFF_ARGS)
2162: {
2163:
2164: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
2165: ln, ppos, roffs[tok].name);
1.149 schwarze 2166: return ROFF_IGN;
1.123 schwarze 2167: }
2168:
2169: static enum rofferr
1.2 schwarze 2170: roff_cond(ROFF_ARGS)
2171: {
1.46 schwarze 2172:
2173: roffnode_push(r, tok, NULL, ln, ppos);
1.2 schwarze 2174:
1.80 schwarze 2175: /*
1.35 schwarze 2176: * An `.el' has no conditional body: it will consume the value
2177: * of the current rstack entry set in prior `ie' calls or
1.80 schwarze 2178: * defaults to DENY.
1.35 schwarze 2179: *
2180: * If we're not an `el', however, then evaluate the conditional.
2181: */
1.1 schwarze 2182:
1.110 schwarze 2183: r->last->rule = tok == ROFF_el ?
1.80 schwarze 2184: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.110 schwarze 2185: roff_evalcond(r, ln, buf->buf, &pos);
1.2 schwarze 2186:
1.35 schwarze 2187: /*
2188: * An if-else will put the NEGATION of the current evaluated
2189: * conditional into the stack of rules.
2190: */
2191:
1.110 schwarze 2192: if (tok == ROFF_ie) {
1.96 schwarze 2193: if (r->rstackpos + 1 == r->rstacksz) {
2194: r->rstacksz += 16;
2195: r->rstack = mandoc_reallocarray(r->rstack,
2196: r->rstacksz, sizeof(int));
1.35 schwarze 2197: }
1.71 schwarze 2198: r->rstack[++r->rstackpos] = !r->last->rule;
1.2 schwarze 2199: }
1.5 schwarze 2200:
2201: /* If the parent has false as its rule, then so do we. */
2202:
1.71 schwarze 2203: if (r->last->parent && !r->last->parent->rule)
2204: r->last->rule = 0;
1.5 schwarze 2205:
2206: /*
1.46 schwarze 2207: * Determine scope.
2208: * If there is nothing on the line after the conditional,
2209: * not even whitespace, use next-line scope.
1.5 schwarze 2210: */
1.2 schwarze 2211:
1.110 schwarze 2212: if (buf->buf[pos] == '\0') {
1.46 schwarze 2213: r->last->endspan = 2;
2214: goto out;
2215: }
2216:
1.110 schwarze 2217: while (buf->buf[pos] == ' ')
1.46 schwarze 2218: pos++;
2219:
2220: /* An opening brace requests multiline scope. */
1.2 schwarze 2221:
1.110 schwarze 2222: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.2 schwarze 2223: r->last->endspan = -1;
2224: pos += 2;
1.144 schwarze 2225: while (buf->buf[pos] == ' ')
2226: pos++;
1.46 schwarze 2227: goto out;
1.80 schwarze 2228: }
1.2 schwarze 2229:
2230: /*
1.46 schwarze 2231: * Anything else following the conditional causes
2232: * single-line scope. Warn if the scope contains
2233: * nothing but trailing whitespace.
1.2 schwarze 2234: */
2235:
1.110 schwarze 2236: if (buf->buf[pos] == '\0')
1.89 schwarze 2237: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
2238: ln, ppos, roffs[tok].name);
1.2 schwarze 2239:
1.46 schwarze 2240: r->last->endspan = 1;
1.1 schwarze 2241:
1.46 schwarze 2242: out:
1.2 schwarze 2243: *offs = pos;
1.149 schwarze 2244: return ROFF_RERUN;
1.1 schwarze 2245: }
2246:
1.2 schwarze 2247: static enum rofferr
1.7 schwarze 2248: roff_ds(ROFF_ARGS)
2249: {
1.85 schwarze 2250: char *string;
2251: const char *name;
2252: size_t namesz;
1.10 schwarze 2253:
1.123 schwarze 2254: /* Ignore groff compatibility mode for now. */
2255:
2256: if (tok == ROFF_ds1)
2257: tok = ROFF_ds;
2258: else if (tok == ROFF_as1)
2259: tok = ROFF_as;
2260:
1.10 schwarze 2261: /*
1.85 schwarze 2262: * The first word is the name of the string.
2263: * If it is empty or terminated by an escape sequence,
2264: * abort the `ds' request without defining anything.
1.10 schwarze 2265: */
1.7 schwarze 2266:
1.110 schwarze 2267: name = string = buf->buf + pos;
2268: if (*name == '\0')
1.149 schwarze 2269: return ROFF_IGN;
1.7 schwarze 2270:
1.85 schwarze 2271: namesz = roff_getname(r, &string, ln, pos);
1.110 schwarze 2272: if (name[namesz] == '\\')
1.149 schwarze 2273: return ROFF_IGN;
1.85 schwarze 2274:
2275: /* Read past the initial double-quote, if any. */
1.110 schwarze 2276: if (*string == '"')
1.7 schwarze 2277: string++;
2278:
1.10 schwarze 2279: /* The rest is the value. */
1.85 schwarze 2280: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2281: ROFF_as == tok);
1.149 schwarze 2282: return ROFF_IGN;
1.7 schwarze 2283: }
2284:
1.77 schwarze 2285: /*
2286: * Parse a single operator, one or two characters long.
2287: * If the operator is recognized, return success and advance the
2288: * parse point, else return failure and let the parse point unchanged.
2289: */
2290: static int
2291: roff_getop(const char *v, int *pos, char *res)
2292: {
2293:
2294: *res = v[*pos];
2295:
2296: switch (*res) {
1.80 schwarze 2297: case '+':
2298: case '-':
2299: case '*':
2300: case '/':
2301: case '%':
2302: case '&':
2303: case ':':
1.77 schwarze 2304: break;
2305: case '<':
2306: switch (v[*pos + 1]) {
1.80 schwarze 2307: case '=':
1.77 schwarze 2308: *res = 'l';
2309: (*pos)++;
2310: break;
1.80 schwarze 2311: case '>':
1.77 schwarze 2312: *res = '!';
2313: (*pos)++;
2314: break;
1.80 schwarze 2315: case '?':
1.77 schwarze 2316: *res = 'i';
2317: (*pos)++;
2318: break;
2319: default:
2320: break;
2321: }
2322: break;
2323: case '>':
2324: switch (v[*pos + 1]) {
1.80 schwarze 2325: case '=':
1.77 schwarze 2326: *res = 'g';
2327: (*pos)++;
2328: break;
1.80 schwarze 2329: case '?':
1.77 schwarze 2330: *res = 'a';
2331: (*pos)++;
2332: break;
2333: default:
2334: break;
2335: }
2336: break;
2337: case '=':
2338: if ('=' == v[*pos + 1])
2339: (*pos)++;
2340: break;
2341: default:
1.149 schwarze 2342: return 0;
1.77 schwarze 2343: }
2344: (*pos)++;
2345:
1.149 schwarze 2346: return *res;
1.77 schwarze 2347: }
2348:
2349: /*
2350: * Evaluate either a parenthesized numeric expression
2351: * or a single signed integer number.
2352: */
2353: static int
1.106 schwarze 2354: roff_evalpar(struct roff *r, int ln,
1.133 schwarze 2355: const char *v, int *pos, int *res, int flags)
1.77 schwarze 2356: {
2357:
2358: if ('(' != v[*pos])
1.149 schwarze 2359: return roff_getnum(v, pos, res, flags);
1.77 schwarze 2360:
2361: (*pos)++;
1.133 schwarze 2362: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.149 schwarze 2363: return 0;
1.77 schwarze 2364:
1.79 schwarze 2365: /*
2366: * Omission of the closing parenthesis
2367: * is an error in validation mode,
2368: * but ignored in evaluation mode.
2369: */
2370:
1.77 schwarze 2371: if (')' == v[*pos])
2372: (*pos)++;
1.79 schwarze 2373: else if (NULL == res)
1.149 schwarze 2374: return 0;
1.77 schwarze 2375:
1.149 schwarze 2376: return 1;
1.77 schwarze 2377: }
2378:
2379: /*
2380: * Evaluate a complete numeric expression.
2381: * Proceed left to right, there is no concept of precedence.
2382: */
2383: static int
1.106 schwarze 2384: roff_evalnum(struct roff *r, int ln, const char *v,
1.133 schwarze 2385: int *pos, int *res, int flags)
1.77 schwarze 2386: {
2387: int mypos, operand2;
2388: char operator;
2389:
2390: if (NULL == pos) {
2391: mypos = 0;
2392: pos = &mypos;
2393: }
2394:
1.133 schwarze 2395: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2396: while (isspace((unsigned char)v[*pos]))
2397: (*pos)++;
2398:
1.133 schwarze 2399: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.149 schwarze 2400: return 0;
1.77 schwarze 2401:
2402: while (1) {
1.133 schwarze 2403: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2404: while (isspace((unsigned char)v[*pos]))
2405: (*pos)++;
2406:
2407: if ( ! roff_getop(v, pos, &operator))
2408: break;
2409:
1.133 schwarze 2410: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2411: while (isspace((unsigned char)v[*pos]))
2412: (*pos)++;
2413:
1.133 schwarze 2414: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.149 schwarze 2415: return 0;
1.77 schwarze 2416:
1.133 schwarze 2417: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2418: while (isspace((unsigned char)v[*pos]))
2419: (*pos)++;
1.79 schwarze 2420:
2421: if (NULL == res)
2422: continue;
1.77 schwarze 2423:
2424: switch (operator) {
1.80 schwarze 2425: case '+':
1.77 schwarze 2426: *res += operand2;
2427: break;
1.80 schwarze 2428: case '-':
1.77 schwarze 2429: *res -= operand2;
2430: break;
1.80 schwarze 2431: case '*':
1.77 schwarze 2432: *res *= operand2;
2433: break;
1.80 schwarze 2434: case '/':
1.116 schwarze 2435: if (operand2 == 0) {
1.106 schwarze 2436: mandoc_msg(MANDOCERR_DIVZERO,
2437: r->parse, ln, *pos, v);
2438: *res = 0;
2439: break;
2440: }
1.77 schwarze 2441: *res /= operand2;
2442: break;
1.80 schwarze 2443: case '%':
1.116 schwarze 2444: if (operand2 == 0) {
2445: mandoc_msg(MANDOCERR_DIVZERO,
2446: r->parse, ln, *pos, v);
2447: *res = 0;
2448: break;
2449: }
1.77 schwarze 2450: *res %= operand2;
2451: break;
1.80 schwarze 2452: case '<':
1.77 schwarze 2453: *res = *res < operand2;
2454: break;
1.80 schwarze 2455: case '>':
1.77 schwarze 2456: *res = *res > operand2;
2457: break;
1.80 schwarze 2458: case 'l':
1.77 schwarze 2459: *res = *res <= operand2;
2460: break;
1.80 schwarze 2461: case 'g':
1.77 schwarze 2462: *res = *res >= operand2;
2463: break;
1.80 schwarze 2464: case '=':
1.77 schwarze 2465: *res = *res == operand2;
2466: break;
1.80 schwarze 2467: case '!':
1.77 schwarze 2468: *res = *res != operand2;
2469: break;
1.80 schwarze 2470: case '&':
1.77 schwarze 2471: *res = *res && operand2;
2472: break;
1.80 schwarze 2473: case ':':
1.77 schwarze 2474: *res = *res || operand2;
2475: break;
1.80 schwarze 2476: case 'i':
1.77 schwarze 2477: if (operand2 < *res)
2478: *res = operand2;
2479: break;
1.80 schwarze 2480: case 'a':
1.77 schwarze 2481: if (operand2 > *res)
2482: *res = operand2;
2483: break;
2484: default:
2485: abort();
2486: }
2487: }
1.149 schwarze 2488: return 1;
1.77 schwarze 2489: }
2490:
1.138 schwarze 2491: /* --- register management ------------------------------------------------ */
2492:
1.52 schwarze 2493: void
1.60 schwarze 2494: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.41 schwarze 2495: {
1.52 schwarze 2496: struct roffreg *reg;
2497:
2498: /* Search for an existing register with the same name. */
2499: reg = r->regtab;
2500:
2501: while (reg && strcmp(name, reg->key.p))
2502: reg = reg->next;
1.41 schwarze 2503:
1.52 schwarze 2504: if (NULL == reg) {
2505: /* Create a new register. */
2506: reg = mandoc_malloc(sizeof(struct roffreg));
2507: reg->key.p = mandoc_strdup(name);
2508: reg->key.sz = strlen(name);
1.60 schwarze 2509: reg->val = 0;
1.52 schwarze 2510: reg->next = r->regtab;
2511: r->regtab = reg;
2512: }
2513:
1.60 schwarze 2514: if ('+' == sign)
2515: reg->val += val;
2516: else if ('-' == sign)
2517: reg->val -= val;
2518: else
2519: reg->val = val;
1.41 schwarze 2520: }
2521:
1.65 schwarze 2522: /*
2523: * Handle some predefined read-only number registers.
2524: * For now, return -1 if the requested register is not predefined;
2525: * in case a predefined read-only register having the value -1
2526: * were to turn up, another special value would have to be chosen.
2527: */
2528: static int
1.145 schwarze 2529: roff_getregro(const struct roff *r, const char *name)
1.65 schwarze 2530: {
2531:
2532: switch (*name) {
1.145 schwarze 2533: case '$': /* Number of arguments of the last macro evaluated. */
1.149 schwarze 2534: return r->argc;
1.80 schwarze 2535: case 'A': /* ASCII approximation mode is always off. */
1.149 schwarze 2536: return 0;
1.80 schwarze 2537: case 'g': /* Groff compatibility mode is always on. */
1.149 schwarze 2538: return 1;
1.80 schwarze 2539: case 'H': /* Fixed horizontal resolution. */
1.149 schwarze 2540: return 24;
1.80 schwarze 2541: case 'j': /* Always adjust left margin only. */
1.149 schwarze 2542: return 0;
1.80 schwarze 2543: case 'T': /* Some output device is always defined. */
1.149 schwarze 2544: return 1;
1.80 schwarze 2545: case 'V': /* Fixed vertical resolution. */
1.149 schwarze 2546: return 40;
1.65 schwarze 2547: default:
1.149 schwarze 2548: return -1;
1.65 schwarze 2549: }
2550: }
2551:
1.53 schwarze 2552: int
1.52 schwarze 2553: roff_getreg(const struct roff *r, const char *name)
1.41 schwarze 2554: {
1.52 schwarze 2555: struct roffreg *reg;
1.65 schwarze 2556: int val;
2557:
2558: if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) {
1.145 schwarze 2559: val = roff_getregro(r, name + 1);
1.65 schwarze 2560: if (-1 != val)
1.149 schwarze 2561: return val;
1.65 schwarze 2562: }
1.52 schwarze 2563:
2564: for (reg = r->regtab; reg; reg = reg->next)
2565: if (0 == strcmp(name, reg->key.p))
1.149 schwarze 2566: return reg->val;
1.53 schwarze 2567:
1.149 schwarze 2568: return 0;
1.53 schwarze 2569: }
2570:
2571: static int
2572: roff_getregn(const struct roff *r, const char *name, size_t len)
2573: {
2574: struct roffreg *reg;
1.65 schwarze 2575: int val;
2576:
2577: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2578: val = roff_getregro(r, name + 1);
1.65 schwarze 2579: if (-1 != val)
1.149 schwarze 2580: return val;
1.65 schwarze 2581: }
1.53 schwarze 2582:
2583: for (reg = r->regtab; reg; reg = reg->next)
2584: if (len == reg->key.sz &&
2585: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 2586: return reg->val;
1.143 schwarze 2587:
1.149 schwarze 2588: return 0;
1.143 schwarze 2589: }
2590:
2591: static int
2592: roff_hasregn(const struct roff *r, const char *name, size_t len)
2593: {
2594: struct roffreg *reg;
2595: int val;
2596:
2597: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2598: val = roff_getregro(r, name + 1);
1.143 schwarze 2599: if (-1 != val)
1.149 schwarze 2600: return 1;
1.143 schwarze 2601: }
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 1;
1.41 schwarze 2607:
1.149 schwarze 2608: return 0;
1.41 schwarze 2609: }
2610:
1.52 schwarze 2611: static void
2612: roff_freereg(struct roffreg *reg)
1.41 schwarze 2613: {
1.52 schwarze 2614: struct roffreg *old_reg;
1.41 schwarze 2615:
1.52 schwarze 2616: while (NULL != reg) {
2617: free(reg->key.p);
2618: old_reg = reg;
2619: reg = reg->next;
2620: free(old_reg);
2621: }
1.41 schwarze 2622: }
1.7 schwarze 2623:
2624: static enum rofferr
1.6 schwarze 2625: roff_nr(ROFF_ARGS)
1.1 schwarze 2626: {
1.85 schwarze 2627: char *key, *val;
2628: size_t keysz;
1.37 schwarze 2629: int iv;
1.60 schwarze 2630: char sign;
1.6 schwarze 2631:
1.110 schwarze 2632: key = val = buf->buf + pos;
2633: if (*key == '\0')
1.149 schwarze 2634: return ROFF_IGN;
1.85 schwarze 2635:
2636: keysz = roff_getname(r, &val, ln, pos);
1.110 schwarze 2637: if (key[keysz] == '\\')
1.149 schwarze 2638: return ROFF_IGN;
1.85 schwarze 2639: key[keysz] = '\0';
1.6 schwarze 2640:
1.60 schwarze 2641: sign = *val;
1.110 schwarze 2642: if (sign == '+' || sign == '-')
1.60 schwarze 2643: val++;
2644:
1.133 schwarze 2645: if (roff_evalnum(r, ln, val, NULL, &iv, ROFFNUM_SCALE))
1.77 schwarze 2646: roff_setreg(r, key, iv, sign);
1.1 schwarze 2647:
1.149 schwarze 2648: return ROFF_IGN;
1.76 schwarze 2649: }
2650:
2651: static enum rofferr
2652: roff_rr(ROFF_ARGS)
2653: {
2654: struct roffreg *reg, **prev;
1.85 schwarze 2655: char *name, *cp;
2656: size_t namesz;
1.76 schwarze 2657:
1.110 schwarze 2658: name = cp = buf->buf + pos;
2659: if (*name == '\0')
1.149 schwarze 2660: return ROFF_IGN;
1.85 schwarze 2661: namesz = roff_getname(r, &cp, ln, pos);
2662: name[namesz] = '\0';
1.76 schwarze 2663:
2664: prev = &r->regtab;
2665: while (1) {
2666: reg = *prev;
1.110 schwarze 2667: if (reg == NULL || !strcmp(name, reg->key.p))
1.76 schwarze 2668: break;
2669: prev = ®->next;
2670: }
1.110 schwarze 2671: if (reg != NULL) {
1.76 schwarze 2672: *prev = reg->next;
2673: free(reg->key.p);
2674: free(reg);
2675: }
1.149 schwarze 2676: return ROFF_IGN;
1.29 schwarze 2677: }
2678:
1.138 schwarze 2679: /* --- handler functions for roff requests -------------------------------- */
2680:
1.29 schwarze 2681: static enum rofferr
2682: roff_rm(ROFF_ARGS)
2683: {
2684: const char *name;
2685: char *cp;
1.85 schwarze 2686: size_t namesz;
1.29 schwarze 2687:
1.110 schwarze 2688: cp = buf->buf + pos;
2689: while (*cp != '\0') {
1.85 schwarze 2690: name = cp;
1.110 schwarze 2691: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.85 schwarze 2692: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.110 schwarze 2693: if (name[namesz] == '\\')
1.85 schwarze 2694: break;
1.29 schwarze 2695: }
1.149 schwarze 2696: return ROFF_IGN;
1.51 schwarze 2697: }
2698:
2699: static enum rofferr
2700: roff_it(ROFF_ARGS)
2701: {
2702: int iv;
2703:
2704: /* Parse the number of lines. */
1.133 schwarze 2705:
2706: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.95 schwarze 2707: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.110 schwarze 2708: ln, ppos, buf->buf + 1);
1.149 schwarze 2709: return ROFF_IGN;
1.51 schwarze 2710: }
2711:
1.134 schwarze 2712: while (isspace((unsigned char)buf->buf[pos]))
2713: pos++;
2714:
2715: /*
2716: * Arm the input line trap.
2717: * Special-casing "an-trap" is an ugly workaround to cope
2718: * with DocBook stupidly fiddling with man(7) internals.
2719: */
1.133 schwarze 2720:
1.51 schwarze 2721: roffit_lines = iv;
1.134 schwarze 2722: roffit_macro = mandoc_strdup(iv != 1 ||
2723: strcmp(buf->buf + pos, "an-trap") ?
2724: buf->buf + pos : "br");
1.149 schwarze 2725: return ROFF_IGN;
1.47 schwarze 2726: }
2727:
2728: static enum rofferr
2729: roff_Dd(ROFF_ARGS)
2730: {
2731: const char *const *cp;
2732:
1.99 schwarze 2733: if ((r->options & (MPARSE_MDOC | MPARSE_QUICK)) == 0)
1.47 schwarze 2734: for (cp = __mdoc_reserved; *cp; cp++)
2735: roff_setstr(r, *cp, NULL, 0);
2736:
1.99 schwarze 2737: if (r->format == 0)
2738: r->format = MPARSE_MDOC;
2739:
1.149 schwarze 2740: return ROFF_CONT;
1.47 schwarze 2741: }
2742:
2743: static enum rofferr
2744: roff_TH(ROFF_ARGS)
2745: {
2746: const char *const *cp;
2747:
1.99 schwarze 2748: if ((r->options & MPARSE_QUICK) == 0)
1.47 schwarze 2749: for (cp = __man_reserved; *cp; cp++)
2750: roff_setstr(r, *cp, NULL, 0);
2751:
1.99 schwarze 2752: if (r->format == 0)
2753: r->format = MPARSE_MAN;
2754:
1.149 schwarze 2755: return ROFF_CONT;
1.14 schwarze 2756: }
2757:
2758: static enum rofferr
1.27 schwarze 2759: roff_TE(ROFF_ARGS)
2760: {
2761:
2762: if (NULL == r->tbl)
1.94 schwarze 2763: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2764: ln, ppos, "TE");
1.130 schwarze 2765: else if ( ! tbl_end(&r->tbl)) {
2766: free(buf->buf);
2767: buf->buf = mandoc_strdup(".sp");
2768: buf->sz = 4;
1.149 schwarze 2769: return ROFF_REPARSE;
1.130 schwarze 2770: }
1.149 schwarze 2771: return ROFF_IGN;
1.27 schwarze 2772: }
2773:
2774: static enum rofferr
2775: roff_T_(ROFF_ARGS)
2776: {
2777:
2778: if (NULL == r->tbl)
1.94 schwarze 2779: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2780: ln, ppos, "T&");
1.27 schwarze 2781: else
2782: tbl_restart(ppos, ln, r->tbl);
2783:
1.149 schwarze 2784: return ROFF_IGN;
1.27 schwarze 2785: }
2786:
1.102 schwarze 2787: /*
2788: * Handle in-line equation delimiters.
2789: */
2790: static enum rofferr
1.110 schwarze 2791: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.41 schwarze 2792: {
1.105 schwarze 2793: char *cp1, *cp2;
2794: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.41 schwarze 2795:
1.102 schwarze 2796: /*
2797: * Outside equations, look for an opening delimiter.
2798: * If we are inside an equation, we already know it is
2799: * in-line, or this function wouldn't have been called;
2800: * so look for a closing delimiter.
2801: */
2802:
1.110 schwarze 2803: cp1 = buf->buf + pos;
1.102 schwarze 2804: cp2 = strchr(cp1, r->eqn == NULL ?
2805: r->last_eqn->odelim : r->last_eqn->cdelim);
2806: if (cp2 == NULL)
1.149 schwarze 2807: return ROFF_CONT;
1.102 schwarze 2808:
1.105 schwarze 2809: *cp2++ = '\0';
2810: bef_pr = bef_nl = aft_nl = aft_pr = "";
2811:
2812: /* Handle preceding text, protecting whitespace. */
2813:
1.110 schwarze 2814: if (*buf->buf != '\0') {
1.105 schwarze 2815: if (r->eqn == NULL)
2816: bef_pr = "\\&";
2817: bef_nl = "\n";
2818: }
2819:
2820: /*
2821: * Prepare replacing the delimiter with an equation macro
2822: * and drop leading white space from the equation.
2823: */
1.102 schwarze 2824:
1.105 schwarze 2825: if (r->eqn == NULL) {
2826: while (*cp2 == ' ')
2827: cp2++;
2828: mac = ".EQ";
2829: } else
2830: mac = ".EN";
2831:
2832: /* Handle following text, protecting whitespace. */
2833:
2834: if (*cp2 != '\0') {
2835: aft_nl = "\n";
2836: if (r->eqn != NULL)
2837: aft_pr = "\\&";
2838: }
2839:
2840: /* Do the actual replacement. */
2841:
1.110 schwarze 2842: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.105 schwarze 2843: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.110 schwarze 2844: free(buf->buf);
2845: buf->buf = cp1;
1.102 schwarze 2846:
2847: /* Toggle the in-line state of the eqn subsystem. */
2848:
2849: r->eqn_inline = r->eqn == NULL;
1.149 schwarze 2850: return ROFF_REPARSE;
1.41 schwarze 2851: }
2852:
1.107 schwarze 2853: static enum rofferr
2854: roff_EQ(ROFF_ARGS)
1.32 schwarze 2855: {
1.41 schwarze 2856: struct eqn_node *e;
1.32 schwarze 2857:
1.110 schwarze 2858: assert(r->eqn == NULL);
1.107 schwarze 2859: e = eqn_alloc(ppos, ln, r->parse);
1.32 schwarze 2860:
1.102 schwarze 2861: if (r->last_eqn) {
1.32 schwarze 2862: r->last_eqn->next = e;
1.102 schwarze 2863: e->delim = r->last_eqn->delim;
2864: e->odelim = r->last_eqn->odelim;
2865: e->cdelim = r->last_eqn->cdelim;
2866: } else
1.32 schwarze 2867: r->first_eqn = r->last_eqn = e;
2868:
2869: r->eqn = r->last_eqn = e;
1.41 schwarze 2870:
1.110 schwarze 2871: if (buf->buf[pos] != '\0')
1.107 schwarze 2872: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 2873: ".EQ %s", buf->buf + pos);
1.41 schwarze 2874:
1.149 schwarze 2875: return ROFF_IGN;
1.32 schwarze 2876: }
2877:
2878: static enum rofferr
2879: roff_EN(ROFF_ARGS)
2880: {
2881:
1.94 schwarze 2882: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
1.149 schwarze 2883: return ROFF_IGN;
1.32 schwarze 2884: }
2885:
2886: static enum rofferr
1.27 schwarze 2887: roff_TS(ROFF_ARGS)
2888: {
1.49 schwarze 2889: struct tbl_node *tbl;
1.27 schwarze 2890:
2891: if (r->tbl) {
1.94 schwarze 2892: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
2893: ln, ppos, "TS breaks TS");
1.41 schwarze 2894: tbl_end(&r->tbl);
1.27 schwarze 2895: }
2896:
1.49 schwarze 2897: tbl = tbl_alloc(ppos, ln, r->parse);
1.27 schwarze 2898:
2899: if (r->last_tbl)
1.49 schwarze 2900: r->last_tbl->next = tbl;
1.27 schwarze 2901: else
1.49 schwarze 2902: r->first_tbl = r->last_tbl = tbl;
1.27 schwarze 2903:
1.49 schwarze 2904: r->tbl = r->last_tbl = tbl;
1.149 schwarze 2905: return ROFF_IGN;
1.123 schwarze 2906: }
2907:
2908: static enum rofferr
2909: roff_brp(ROFF_ARGS)
2910: {
2911:
2912: buf->buf[pos - 1] = '\0';
1.149 schwarze 2913: return ROFF_CONT;
1.27 schwarze 2914: }
2915:
2916: static enum rofferr
1.48 schwarze 2917: roff_cc(ROFF_ARGS)
2918: {
2919: const char *p;
2920:
1.110 schwarze 2921: p = buf->buf + pos;
1.48 schwarze 2922:
1.110 schwarze 2923: if (*p == '\0' || (r->control = *p++) == '.')
1.48 schwarze 2924: r->control = 0;
2925:
1.110 schwarze 2926: if (*p != '\0')
1.132 schwarze 2927: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
2928: ln, p - buf->buf, "cc ... %s", p);
1.48 schwarze 2929:
1.149 schwarze 2930: return ROFF_IGN;
1.48 schwarze 2931: }
2932:
2933: static enum rofferr
1.42 schwarze 2934: roff_tr(ROFF_ARGS)
2935: {
2936: const char *p, *first, *second;
2937: size_t fsz, ssz;
2938: enum mandoc_esc esc;
2939:
1.110 schwarze 2940: p = buf->buf + pos;
1.42 schwarze 2941:
1.110 schwarze 2942: if (*p == '\0') {
1.132 schwarze 2943: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.149 schwarze 2944: return ROFF_IGN;
1.42 schwarze 2945: }
2946:
1.110 schwarze 2947: while (*p != '\0') {
1.42 schwarze 2948: fsz = ssz = 1;
2949:
2950: first = p++;
1.110 schwarze 2951: if (*first == '\\') {
1.42 schwarze 2952: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 2953: if (esc == ESCAPE_ERROR) {
1.92 schwarze 2954: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 2955: ln, (int)(p - buf->buf), first);
1.149 schwarze 2956: return ROFF_IGN;
1.42 schwarze 2957: }
2958: fsz = (size_t)(p - first);
2959: }
2960:
2961: second = p++;
1.110 schwarze 2962: if (*second == '\\') {
1.42 schwarze 2963: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 2964: if (esc == ESCAPE_ERROR) {
1.92 schwarze 2965: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 2966: ln, (int)(p - buf->buf), second);
1.149 schwarze 2967: return ROFF_IGN;
1.42 schwarze 2968: }
2969: ssz = (size_t)(p - second);
1.110 schwarze 2970: } else if (*second == '\0') {
1.132 schwarze 2971: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
2972: ln, first - buf->buf, "tr %s", first);
1.42 schwarze 2973: second = " ";
2974: p--;
2975: }
2976:
2977: if (fsz > 1) {
1.80 schwarze 2978: roff_setstrn(&r->xmbtab, first, fsz,
2979: second, ssz, 0);
1.42 schwarze 2980: continue;
2981: }
2982:
1.110 schwarze 2983: if (r->xtab == NULL)
1.80 schwarze 2984: r->xtab = mandoc_calloc(128,
2985: sizeof(struct roffstr));
1.42 schwarze 2986:
2987: free(r->xtab[(int)*first].p);
2988: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
2989: r->xtab[(int)*first].sz = ssz;
2990: }
2991:
1.149 schwarze 2992: return ROFF_IGN;
1.42 schwarze 2993: }
2994:
2995: static enum rofferr
1.14 schwarze 2996: roff_so(ROFF_ARGS)
2997: {
1.121 schwarze 2998: char *name, *cp;
1.15 schwarze 2999:
1.110 schwarze 3000: name = buf->buf + pos;
1.97 schwarze 3001: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.14 schwarze 3002:
1.22 schwarze 3003: /*
3004: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3005: * opening anything that's not in our cwd or anything beneath
3006: * it. Thus, explicitly disallow traversing up the file-system
3007: * or using absolute paths.
3008: */
3009:
1.110 schwarze 3010: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.83 schwarze 3011: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
3012: ".so %s", name);
1.121 schwarze 3013: buf->sz = mandoc_asprintf(&cp,
3014: ".sp\nSee the file %s.\n.sp", name) + 1;
3015: free(buf->buf);
3016: buf->buf = cp;
3017: *offs = 0;
1.149 schwarze 3018: return ROFF_REPARSE;
1.14 schwarze 3019: }
3020:
3021: *offs = pos;
1.149 schwarze 3022: return ROFF_SO;
1.7 schwarze 3023: }
3024:
1.138 schwarze 3025: /* --- user defined strings and macros ------------------------------------ */
3026:
1.16 schwarze 3027: static enum rofferr
3028: roff_userdef(ROFF_ARGS)
1.12 schwarze 3029: {
1.135 schwarze 3030: const char *arg[9], *ap;
1.16 schwarze 3031: char *cp, *n1, *n2;
1.146 schwarze 3032: int i, ib, ie;
1.135 schwarze 3033: size_t asz, rsz;
1.12 schwarze 3034:
1.16 schwarze 3035: /*
3036: * Collect pointers to macro argument strings
1.61 schwarze 3037: * and NUL-terminate them.
1.16 schwarze 3038: */
1.135 schwarze 3039:
1.145 schwarze 3040: r->argc = 0;
1.110 schwarze 3041: cp = buf->buf + pos;
1.145 schwarze 3042: for (i = 0; i < 9; i++) {
3043: if (*cp == '\0')
3044: arg[i] = "";
3045: else {
3046: arg[i] = mandoc_getarg(r->parse, &cp, ln, &pos);
3047: r->argc = i + 1;
3048: }
3049: }
1.16 schwarze 3050:
3051: /*
3052: * Expand macro arguments.
1.12 schwarze 3053: */
1.135 schwarze 3054:
3055: buf->sz = strlen(r->current_string) + 1;
3056: n1 = cp = mandoc_malloc(buf->sz);
3057: memcpy(n1, r->current_string, buf->sz);
3058: while (*cp != '\0') {
3059:
3060: /* Scan ahead for the next argument invocation. */
3061:
3062: if (*cp++ != '\\')
3063: continue;
3064: if (*cp++ != '$')
3065: continue;
1.146 schwarze 3066: if (*cp == '*') { /* \\$* inserts all arguments */
3067: ib = 0;
3068: ie = r->argc - 1;
3069: } else { /* \\$1 .. \\$9 insert one argument */
3070: ib = ie = *cp - '1';
3071: if (ib < 0 || ib > 8)
3072: continue;
3073: }
1.135 schwarze 3074: cp -= 2;
3075:
3076: /*
3077: * Determine the size of the expanded argument,
3078: * taking escaping of quotes into account.
3079: */
3080:
1.146 schwarze 3081: asz = ie > ib ? ie - ib : 0; /* for blanks */
3082: for (i = ib; i <= ie; i++) {
3083: for (ap = arg[i]; *ap != '\0'; ap++) {
3084: asz++;
3085: if (*ap == '"')
3086: asz += 3;
3087: }
1.135 schwarze 3088: }
3089: if (asz != 3) {
3090:
3091: /*
3092: * Determine the size of the rest of the
3093: * unexpanded macro, including the NUL.
3094: */
3095:
3096: rsz = buf->sz - (cp - n1) - 3;
3097:
3098: /*
3099: * When shrinking, move before
3100: * releasing the storage.
3101: */
3102:
3103: if (asz < 3)
3104: memmove(cp + asz, cp + 3, rsz);
3105:
3106: /*
3107: * Resize the storage for the macro
3108: * and readjust the parse pointer.
3109: */
3110:
3111: buf->sz += asz - 3;
3112: n2 = mandoc_realloc(n1, buf->sz);
3113: cp = n2 + (cp - n1);
3114: n1 = n2;
3115:
3116: /*
3117: * When growing, make room
3118: * for the expanded argument.
3119: */
3120:
3121: if (asz > 3)
3122: memmove(cp + asz, cp + 3, rsz);
3123: }
3124:
3125: /* Copy the expanded argument, escaping quotes. */
3126:
3127: n2 = cp;
1.146 schwarze 3128: for (i = ib; i <= ie; i++) {
3129: for (ap = arg[i]; *ap != '\0'; ap++) {
3130: if (*ap == '"') {
3131: memcpy(n2, "\\(dq", 4);
3132: n2 += 4;
3133: } else
3134: *n2++ = *ap;
3135: }
3136: if (i < ie)
3137: *n2++ = ' ';
1.16 schwarze 3138: }
1.12 schwarze 3139: }
3140:
1.16 schwarze 3141: /*
3142: * Replace the macro invocation
3143: * by the expanded macro.
3144: */
1.135 schwarze 3145:
1.110 schwarze 3146: free(buf->buf);
3147: buf->buf = n1;
1.120 schwarze 3148: *offs = 0;
1.16 schwarze 3149:
1.149 schwarze 3150: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
3151: ROFF_REPARSE : ROFF_APPEND;
1.12 schwarze 3152: }
1.28 schwarze 3153:
1.85 schwarze 3154: static size_t
1.28 schwarze 3155: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3156: {
3157: char *name, *cp;
1.85 schwarze 3158: size_t namesz;
1.28 schwarze 3159:
3160: name = *cpp;
3161: if ('\0' == *name)
1.149 schwarze 3162: return 0;
1.28 schwarze 3163:
1.85 schwarze 3164: /* Read until end of name and terminate it with NUL. */
3165: for (cp = name; 1; cp++) {
3166: if ('\0' == *cp || ' ' == *cp) {
3167: namesz = cp - name;
3168: break;
3169: }
1.28 schwarze 3170: if ('\\' != *cp)
3171: continue;
1.88 schwarze 3172: namesz = cp - name;
3173: if ('{' == cp[1] || '}' == cp[1])
3174: break;
1.28 schwarze 3175: cp++;
3176: if ('\\' == *cp)
3177: continue;
1.97 schwarze 3178: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3179: "%.*s", (int)(cp - name + 1), name);
1.85 schwarze 3180: mandoc_escape((const char **)&cp, NULL, NULL);
3181: break;
1.28 schwarze 3182: }
3183:
3184: /* Read past spaces. */
3185: while (' ' == *cp)
3186: cp++;
3187:
3188: *cpp = cp;
1.149 schwarze 3189: return namesz;
1.28 schwarze 3190: }
3191:
1.16 schwarze 3192: /*
3193: * Store *string into the user-defined string called *name.
3194: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.66 schwarze 3195: * append == 0: replace mode
3196: * append == 1: single-line append mode
3197: * append == 2: multiline append mode, append '\n' after each call
1.16 schwarze 3198: */
1.8 schwarze 3199: static void
1.16 schwarze 3200: roff_setstr(struct roff *r, const char *name, const char *string,
1.66 schwarze 3201: int append)
1.7 schwarze 3202: {
1.42 schwarze 3203:
3204: roff_setstrn(&r->strtab, name, strlen(name), string,
1.80 schwarze 3205: string ? strlen(string) : 0, append);
1.42 schwarze 3206: }
3207:
3208: static void
3209: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.66 schwarze 3210: const char *string, size_t stringsz, int append)
1.42 schwarze 3211: {
3212: struct roffkv *n;
3213: char *c;
3214: int i;
3215: size_t oldch, newch;
1.7 schwarze 3216:
1.16 schwarze 3217: /* Search for an existing string with the same name. */
1.42 schwarze 3218: n = *r;
3219:
1.84 schwarze 3220: while (n && (namesz != n->key.sz ||
3221: strncmp(n->key.p, name, namesz)))
1.7 schwarze 3222: n = n->next;
1.8 schwarze 3223:
3224: if (NULL == n) {
1.16 schwarze 3225: /* Create a new string table entry. */
1.42 schwarze 3226: n = mandoc_malloc(sizeof(struct roffkv));
3227: n->key.p = mandoc_strndup(name, namesz);
3228: n->key.sz = namesz;
3229: n->val.p = NULL;
3230: n->val.sz = 0;
3231: n->next = *r;
3232: *r = n;
1.66 schwarze 3233: } else if (0 == append) {
1.42 schwarze 3234: free(n->val.p);
3235: n->val.p = NULL;
3236: n->val.sz = 0;
1.16 schwarze 3237: }
3238:
3239: if (NULL == string)
3240: return;
3241:
3242: /*
3243: * One additional byte for the '\n' in multiline mode,
3244: * and one for the terminating '\0'.
3245: */
1.66 schwarze 3246: newch = stringsz + (1 < append ? 2u : 1u);
1.42 schwarze 3247:
3248: if (NULL == n->val.p) {
3249: n->val.p = mandoc_malloc(newch);
3250: *n->val.p = '\0';
1.16 schwarze 3251: oldch = 0;
3252: } else {
1.42 schwarze 3253: oldch = n->val.sz;
3254: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.16 schwarze 3255: }
3256:
3257: /* Skip existing content in the destination buffer. */
1.42 schwarze 3258: c = n->val.p + (int)oldch;
1.16 schwarze 3259:
3260: /* Append new content to the destination buffer. */
1.42 schwarze 3261: i = 0;
3262: while (i < (int)stringsz) {
1.16 schwarze 3263: /*
3264: * Rudimentary roff copy mode:
3265: * Handle escaped backslashes.
3266: */
1.42 schwarze 3267: if ('\\' == string[i] && '\\' == string[i + 1])
3268: i++;
3269: *c++ = string[i++];
1.16 schwarze 3270: }
1.8 schwarze 3271:
1.16 schwarze 3272: /* Append terminating bytes. */
1.66 schwarze 3273: if (1 < append)
1.16 schwarze 3274: *c++ = '\n';
1.42 schwarze 3275:
1.16 schwarze 3276: *c = '\0';
1.42 schwarze 3277: n->val.sz = (int)(c - n->val.p);
1.7 schwarze 3278: }
3279:
1.8 schwarze 3280: static const char *
3281: roff_getstrn(const struct roff *r, const char *name, size_t len)
1.7 schwarze 3282: {
1.42 schwarze 3283: const struct roffkv *n;
1.64 schwarze 3284: int i;
1.7 schwarze 3285:
1.42 schwarze 3286: for (n = r->strtab; n; n = n->next)
1.80 schwarze 3287: if (0 == strncmp(name, n->key.p, len) &&
3288: '\0' == n->key.p[(int)len])
1.149 schwarze 3289: return n->val.p;
1.64 schwarze 3290:
3291: for (i = 0; i < PREDEFS_MAX; i++)
3292: if (0 == strncmp(name, predefs[i].name, len) &&
3293: '\0' == predefs[i].name[(int)len])
1.149 schwarze 3294: return predefs[i].str;
1.8 schwarze 3295:
1.149 schwarze 3296: return NULL;
1.7 schwarze 3297: }
3298:
1.8 schwarze 3299: static void
1.42 schwarze 3300: roff_freestr(struct roffkv *r)
1.7 schwarze 3301: {
1.42 schwarze 3302: struct roffkv *n, *nn;
1.7 schwarze 3303:
1.42 schwarze 3304: for (n = r; n; n = nn) {
3305: free(n->key.p);
3306: free(n->val.p);
1.7 schwarze 3307: nn = n->next;
3308: free(n);
3309: }
1.27 schwarze 3310: }
1.138 schwarze 3311:
3312: /* --- accessors and utility functions ------------------------------------ */
1.27 schwarze 3313:
3314: const struct tbl_span *
3315: roff_span(const struct roff *r)
3316: {
1.80 schwarze 3317:
1.149 schwarze 3318: return r->tbl ? tbl_span(r->tbl) : NULL;
1.32 schwarze 3319: }
3320:
3321: const struct eqn *
3322: roff_eqn(const struct roff *r)
3323: {
1.80 schwarze 3324:
1.149 schwarze 3325: return r->last_eqn ? &r->last_eqn->eqn : NULL;
1.42 schwarze 3326: }
3327:
3328: /*
3329: * Duplicate an input string, making the appropriate character
3330: * conversations (as stipulated by `tr') along the way.
3331: * Returns a heap-allocated string with all the replacements made.
3332: */
3333: char *
3334: roff_strdup(const struct roff *r, const char *p)
3335: {
3336: const struct roffkv *cp;
3337: char *res;
3338: const char *pp;
3339: size_t ssz, sz;
3340: enum mandoc_esc esc;
3341:
3342: if (NULL == r->xmbtab && NULL == r->xtab)
1.149 schwarze 3343: return mandoc_strdup(p);
1.42 schwarze 3344: else if ('\0' == *p)
1.149 schwarze 3345: return mandoc_strdup("");
1.42 schwarze 3346:
3347: /*
3348: * Step through each character looking for term matches
3349: * (remember that a `tr' can be invoked with an escape, which is
3350: * a glyph but the escape is multi-character).
3351: * We only do this if the character hash has been initialised
3352: * and the string is >0 length.
3353: */
3354:
3355: res = NULL;
3356: ssz = 0;
3357:
3358: while ('\0' != *p) {
3359: if ('\\' != *p && r->xtab && r->xtab[(int)*p].p) {
3360: sz = r->xtab[(int)*p].sz;
3361: res = mandoc_realloc(res, ssz + sz + 1);
3362: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3363: ssz += sz;
3364: p++;
3365: continue;
3366: } else if ('\\' != *p) {
3367: res = mandoc_realloc(res, ssz + 2);
3368: res[ssz++] = *p++;
3369: continue;
3370: }
3371:
3372: /* Search for term matches. */
3373: for (cp = r->xmbtab; cp; cp = cp->next)
3374: if (0 == strncmp(p, cp->key.p, cp->key.sz))
3375: break;
3376:
3377: if (NULL != cp) {
3378: /*
3379: * A match has been found.
3380: * Append the match to the array and move
3381: * forward by its keysize.
3382: */
1.80 schwarze 3383: res = mandoc_realloc(res,
3384: ssz + cp->val.sz + 1);
1.42 schwarze 3385: memcpy(res + ssz, cp->val.p, cp->val.sz);
3386: ssz += cp->val.sz;
3387: p += (int)cp->key.sz;
3388: continue;
3389: }
3390:
3391: /*
3392: * Handle escapes carefully: we need to copy
3393: * over just the escape itself, or else we might
3394: * do replacements within the escape itself.
3395: * Make sure to pass along the bogus string.
3396: */
3397: pp = p++;
3398: esc = mandoc_escape(&p, NULL, NULL);
3399: if (ESCAPE_ERROR == esc) {
3400: sz = strlen(pp);
3401: res = mandoc_realloc(res, ssz + sz + 1);
3402: memcpy(res + ssz, pp, sz);
3403: break;
3404: }
1.80 schwarze 3405: /*
3406: * We bail out on bad escapes.
1.42 schwarze 3407: * No need to warn: we already did so when
3408: * roff_res() was called.
3409: */
3410: sz = (int)(p - pp);
3411: res = mandoc_realloc(res, ssz + sz + 1);
3412: memcpy(res + ssz, pp, sz);
3413: ssz += sz;
3414: }
3415:
3416: res[(int)ssz] = '\0';
1.149 schwarze 3417: return res;
1.99 schwarze 3418: }
3419:
3420: int
3421: roff_getformat(const struct roff *r)
3422: {
3423:
1.149 schwarze 3424: return r->format;
1.48 schwarze 3425: }
3426:
3427: /*
1.80 schwarze 3428: * Find out whether a line is a macro line or not.
1.48 schwarze 3429: * If it is, adjust the current position and return one; if it isn't,
3430: * return zero and don't change the current position.
3431: * If the control character has been set with `.cc', then let that grain
3432: * precedence.
3433: * This is slighly contrary to groff, where using the non-breaking
3434: * control character when `cc' has been invoked will cause the
3435: * non-breaking macro contents to be printed verbatim.
3436: */
3437: int
3438: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
3439: {
3440: int pos;
3441:
3442: pos = *ppos;
3443:
3444: if (0 != r->control && cp[pos] == r->control)
3445: pos++;
3446: else if (0 != r->control)
1.149 schwarze 3447: return 0;
1.48 schwarze 3448: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
3449: pos += 2;
3450: else if ('.' == cp[pos] || '\'' == cp[pos])
3451: pos++;
3452: else
1.149 schwarze 3453: return 0;
1.48 schwarze 3454:
3455: while (' ' == cp[pos] || '\t' == cp[pos])
3456: pos++;
3457:
3458: *ppos = pos;
1.149 schwarze 3459: return 1;
1.1 schwarze 3460: }
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