Annotation of mandoc/roff.c, Revision 1.283
1.283 ! schwarze 1: /* $Id: roff.c,v 1.282 2015/10/21 23:51:11 schwarze Exp $ */
1.1 kristaps 2: /*
1.267 schwarze 3: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.247 schwarze 4: * Copyright (c) 2010-2015 Ingo Schwarze <schwarze@openbsd.org>
1.1 kristaps 5: *
6: * Permission to use, copy, modify, and distribute this software for any
1.66 kristaps 7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
1.1 kristaps 9: *
1.106 kristaps 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.66 kristaps 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.106 kristaps 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.66 kristaps 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.
1.1 kristaps 17: */
1.66 kristaps 18: #include "config.h"
1.225 schwarze 19:
20: #include <sys/types.h>
1.30 kristaps 21:
1.67 kristaps 22: #include <assert.h>
1.85 kristaps 23: #include <ctype.h>
1.245 schwarze 24: #include <limits.h>
1.178 schwarze 25: #include <stdio.h>
1.1 kristaps 26: #include <stdlib.h>
1.67 kristaps 27: #include <string.h>
1.1 kristaps 28:
1.67 kristaps 29: #include "mandoc.h"
1.201 schwarze 30: #include "mandoc_aux.h"
1.265 schwarze 31: #include "roff.h"
1.226 schwarze 32: #include "libmandoc.h"
1.266 schwarze 33: #include "roff_int.h"
1.109 kristaps 34: #include "libroff.h"
1.82 kristaps 35:
1.170 schwarze 36: /* Maximum number of string expansions per line, to break infinite loops. */
37: #define EXPAND_LIMIT 1000
38:
1.266 schwarze 39: /* --- data types --------------------------------------------------------- */
40:
1.67 kristaps 41: enum rofft {
1.251 schwarze 42: ROFF_ab,
1.103 kristaps 43: ROFF_ad,
1.251 schwarze 44: ROFF_af,
45: ROFF_aln,
46: ROFF_als,
1.80 kristaps 47: ROFF_am,
1.251 schwarze 48: ROFF_am1,
1.80 kristaps 49: ROFF_ami,
1.251 schwarze 50: ROFF_ami1,
1.193 schwarze 51: ROFF_as,
1.251 schwarze 52: ROFF_as1,
53: ROFF_asciify,
54: ROFF_backtrace,
55: ROFF_bd,
56: ROFF_bleedat,
57: ROFF_blm,
58: ROFF_box,
59: ROFF_boxa,
60: ROFF_bp,
61: ROFF_BP,
62: /* MAN_br, MDOC_br */
63: ROFF_break,
64: ROFF_breakchar,
65: ROFF_brnl,
66: ROFF_brp,
67: ROFF_brpnl,
68: ROFF_c2,
1.174 kristaps 69: ROFF_cc,
1.194 schwarze 70: ROFF_ce,
1.251 schwarze 71: ROFF_cf,
72: ROFF_cflags,
73: ROFF_ch,
74: ROFF_char,
75: ROFF_chop,
76: ROFF_class,
77: ROFF_close,
78: ROFF_CL,
79: ROFF_color,
80: ROFF_composite,
81: ROFF_continue,
82: ROFF_cp,
83: ROFF_cropat,
84: ROFF_cs,
85: ROFF_cu,
86: ROFF_da,
87: ROFF_dch,
88: ROFF_Dd,
1.80 kristaps 89: ROFF_de,
1.251 schwarze 90: ROFF_de1,
91: ROFF_defcolor,
1.80 kristaps 92: ROFF_dei,
1.251 schwarze 93: ROFF_dei1,
94: ROFF_device,
95: ROFF_devicem,
96: ROFF_di,
97: ROFF_do,
1.83 schwarze 98: ROFF_ds,
1.251 schwarze 99: ROFF_ds1,
100: ROFF_dwh,
101: ROFF_dt,
102: ROFF_ec,
103: ROFF_ecr,
104: ROFF_ecs,
1.82 kristaps 105: ROFF_el,
1.251 schwarze 106: ROFF_em,
107: ROFF_EN,
108: ROFF_eo,
109: ROFF_EP,
110: ROFF_EQ,
111: ROFF_errprint,
112: ROFF_ev,
113: ROFF_evc,
114: ROFF_ex,
115: ROFF_fallback,
1.185 schwarze 116: ROFF_fam,
1.251 schwarze 117: ROFF_fc,
118: ROFF_fchar,
119: ROFF_fcolor,
120: ROFF_fdeferlig,
121: ROFF_feature,
122: /* MAN_fi; ignored in mdoc(7) */
123: ROFF_fkern,
124: ROFF_fl,
125: ROFF_flig,
126: ROFF_fp,
127: ROFF_fps,
128: ROFF_fschar,
129: ROFF_fspacewidth,
130: ROFF_fspecial,
131: /* MAN_ft; ignored in mdoc(7) */
132: ROFF_ftr,
133: ROFF_fzoom,
134: ROFF_gcolor,
135: ROFF_hc,
136: ROFF_hcode,
137: ROFF_hidechar,
138: ROFF_hla,
139: ROFF_hlm,
140: ROFF_hpf,
141: ROFF_hpfa,
142: ROFF_hpfcode,
1.186 schwarze 143: ROFF_hw,
1.103 kristaps 144: ROFF_hy,
1.251 schwarze 145: ROFF_hylang,
146: ROFF_hylen,
147: ROFF_hym,
148: ROFF_hypp,
149: ROFF_hys,
1.82 kristaps 150: ROFF_ie,
1.75 kristaps 151: ROFF_if,
1.76 kristaps 152: ROFF_ig,
1.251 schwarze 153: /* MAN_in; ignored in mdoc(7) */
154: ROFF_index,
1.123 schwarze 155: ROFF_it,
1.251 schwarze 156: ROFF_itc,
157: ROFF_IX,
158: ROFF_kern,
159: ROFF_kernafter,
160: ROFF_kernbefore,
161: ROFF_kernpair,
162: ROFF_lc,
163: ROFF_lc_ctype,
164: ROFF_lds,
165: ROFF_length,
166: ROFF_letadj,
167: ROFF_lf,
168: ROFF_lg,
169: ROFF_lhang,
170: ROFF_linetabs,
171: /* MAN_ll, MDOC_ll */
172: ROFF_lnr,
173: ROFF_lnrf,
174: ROFF_lpfx,
175: ROFF_ls,
176: ROFF_lsm,
177: ROFF_lt,
178: ROFF_mc,
179: ROFF_mediasize,
180: ROFF_minss,
181: ROFF_mk,
182: ROFF_mso,
1.256 schwarze 183: ROFF_na,
1.103 kristaps 184: ROFF_ne,
1.251 schwarze 185: /* MAN_nf; ignored in mdoc(7) */
1.103 kristaps 186: ROFF_nh,
1.251 schwarze 187: ROFF_nhychar,
188: ROFF_nm,
189: ROFF_nn,
190: ROFF_nop,
1.104 kristaps 191: ROFF_nr,
1.251 schwarze 192: ROFF_nrf,
193: ROFF_nroff,
1.124 schwarze 194: ROFF_ns,
1.251 schwarze 195: ROFF_nx,
196: ROFF_open,
197: ROFF_opena,
198: ROFF_os,
199: ROFF_output,
200: ROFF_padj,
201: ROFF_papersize,
202: ROFF_pc,
203: ROFF_pev,
204: ROFF_pi,
205: ROFF_PI,
1.229 schwarze 206: ROFF_pl,
1.251 schwarze 207: ROFF_pm,
208: ROFF_pn,
209: ROFF_pnr,
210: ROFF_po,
1.124 schwarze 211: ROFF_ps,
1.251 schwarze 212: ROFF_psbb,
213: ROFF_pshape,
214: ROFF_pso,
215: ROFF_ptr,
216: ROFF_pvs,
217: ROFF_rchar,
218: ROFF_rd,
219: ROFF_recursionlimit,
220: ROFF_return,
221: ROFF_rfschar,
222: ROFF_rhang,
223: ROFF_rj,
1.83 schwarze 224: ROFF_rm,
1.251 schwarze 225: ROFF_rn,
226: ROFF_rnn,
1.203 schwarze 227: ROFF_rr,
1.251 schwarze 228: ROFF_rs,
229: ROFF_rt,
230: ROFF_schar,
231: ROFF_sentchar,
232: ROFF_shc,
233: ROFF_shift,
234: ROFF_sizes,
1.105 kristaps 235: ROFF_so,
1.251 schwarze 236: /* MAN_sp, MDOC_sp */
237: ROFF_spacewidth,
238: ROFF_special,
239: ROFF_spreadwarn,
240: ROFF_ss,
241: ROFF_sty,
242: ROFF_substring,
243: ROFF_sv,
244: ROFF_sy,
245: ROFF_T_,
1.124 schwarze 246: ROFF_ta,
1.251 schwarze 247: ROFF_tc,
248: ROFF_TE,
249: ROFF_TH,
250: ROFF_ti,
251: ROFF_tkf,
252: ROFF_tl,
253: ROFF_tm,
254: ROFF_tm1,
255: ROFF_tmc,
1.83 schwarze 256: ROFF_tr,
1.251 schwarze 257: ROFF_track,
258: ROFF_transchar,
259: ROFF_trf,
260: ROFF_trimat,
261: ROFF_trin,
262: ROFF_trnt,
263: ROFF_troff,
1.109 kristaps 264: ROFF_TS,
1.251 schwarze 265: ROFF_uf,
266: ROFF_ul,
267: ROFF_unformat,
268: ROFF_unwatch,
269: ROFF_unwatchn,
270: ROFF_vpt,
271: ROFF_vs,
272: ROFF_warn,
273: ROFF_warnscale,
274: ROFF_watch,
275: ROFF_watchlength,
276: ROFF_watchn,
277: ROFF_wh,
278: ROFF_while,
279: ROFF_write,
280: ROFF_writec,
281: ROFF_writem,
282: ROFF_xflag,
1.76 kristaps 283: ROFF_cblock,
1.106 kristaps 284: ROFF_USERDEF,
1.67 kristaps 285: ROFF_MAX
286: };
287:
1.147 kristaps 288: /*
1.167 kristaps 289: * An incredibly-simple string buffer.
290: */
1.94 kristaps 291: struct roffstr {
1.167 kristaps 292: char *p; /* nil-terminated buffer */
293: size_t sz; /* saved strlen(p) */
1.166 kristaps 294: };
295:
296: /*
1.167 kristaps 297: * A key-value roffstr pair as part of a singly-linked list.
1.166 kristaps 298: */
299: struct roffkv {
300: struct roffstr key;
301: struct roffstr val;
302: struct roffkv *next; /* next in list */
1.94 kristaps 303: };
304:
1.180 schwarze 305: /*
306: * A single number register as part of a singly-linked list.
307: */
308: struct roffreg {
309: struct roffstr key;
1.181 schwarze 310: int val;
1.180 schwarze 311: struct roffreg *next;
312: };
313:
1.67 kristaps 314: struct roff {
1.128 kristaps 315: struct mparse *parse; /* parse point */
1.67 kristaps 316: struct roffnode *last; /* leaf of stack */
1.223 schwarze 317: int *rstack; /* stack of inverted `ie' values */
1.180 schwarze 318: struct roffreg *regtab; /* number registers */
1.166 kristaps 319: struct roffkv *strtab; /* user-defined strings & macros */
1.167 kristaps 320: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
321: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.106 kristaps 322: const char *current_string; /* value of last called user macro */
1.118 kristaps 323: struct tbl_node *first_tbl; /* first table parsed */
324: struct tbl_node *last_tbl; /* last table parsed */
325: struct tbl_node *tbl; /* current table being parsed */
1.125 kristaps 326: struct eqn_node *last_eqn; /* last equation parsed */
327: struct eqn_node *first_eqn; /* first equation parsed */
328: struct eqn_node *eqn; /* current equation being parsed */
1.230 schwarze 329: int eqn_inline; /* current equation is inline */
1.223 schwarze 330: int options; /* parse options */
331: int rstacksz; /* current size limit of rstack */
332: int rstackpos; /* position in rstack */
1.227 schwarze 333: int format; /* current file in mdoc or man format */
1.273 schwarze 334: int argc; /* number of args of the last macro */
1.223 schwarze 335: char control; /* control character */
1.79 kristaps 336: };
337:
1.67 kristaps 338: struct roffnode {
339: enum rofft tok; /* type of node */
340: struct roffnode *parent; /* up one in stack */
341: int line; /* parse line */
342: int col; /* parse col */
1.106 kristaps 343: char *name; /* node name, e.g. macro name */
1.79 kristaps 344: char *end; /* end-rules: custom token */
345: int endspan; /* end-rules: next-line or infty */
1.198 schwarze 346: int rule; /* current evaluation rule */
1.67 kristaps 347: };
348:
349: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.72 kristaps 350: enum rofft tok, /* tok of macro */ \
1.238 schwarze 351: struct buf *buf, /* input buffer */ \
1.67 kristaps 352: int ln, /* parse line */ \
1.75 kristaps 353: int ppos, /* original pos in buffer */ \
354: int pos, /* current pos in buffer */ \
1.74 kristaps 355: int *offs /* reset offset of buffer data */
1.67 kristaps 356:
357: typedef enum rofferr (*roffproc)(ROFF_ARGS);
358:
359: struct roffmac {
360: const char *name; /* macro name */
1.79 kristaps 361: roffproc proc; /* process new macro */
362: roffproc text; /* process as child text of macro */
363: roffproc sub; /* process as child of macro */
364: int flags;
365: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.85 kristaps 366: struct roffmac *next;
1.67 kristaps 367: };
368:
1.141 kristaps 369: struct predef {
370: const char *name; /* predefined input name */
371: const char *str; /* replacement symbol */
372: };
373:
374: #define PREDEF(__name, __str) \
375: { (__name), (__str) },
376:
1.266 schwarze 377: /* --- function prototypes ------------------------------------------------ */
378:
1.155 kristaps 379: static enum rofft roffhash_find(const char *, size_t);
380: static void roffhash_init(void);
381: static void roffnode_cleanscope(struct roff *);
382: static void roffnode_pop(struct roff *);
383: static void roffnode_push(struct roff *, enum rofft,
384: const char *, int, int);
1.80 kristaps 385: static enum rofferr roff_block(ROFF_ARGS);
386: static enum rofferr roff_block_text(ROFF_ARGS);
387: static enum rofferr roff_block_sub(ROFF_ARGS);
1.251 schwarze 388: static enum rofferr roff_brp(ROFF_ARGS);
1.80 kristaps 389: static enum rofferr roff_cblock(ROFF_ARGS);
1.174 kristaps 390: static enum rofferr roff_cc(ROFF_ARGS);
1.195 schwarze 391: static void roff_ccond(struct roff *, int, int);
1.82 kristaps 392: static enum rofferr roff_cond(ROFF_ARGS);
393: static enum rofferr roff_cond_text(ROFF_ARGS);
394: static enum rofferr roff_cond_sub(ROFF_ARGS);
1.92 schwarze 395: static enum rofferr roff_ds(ROFF_ARGS);
1.238 schwarze 396: static enum rofferr roff_eqndelim(struct roff *, struct buf *, int);
1.271 schwarze 397: static int roff_evalcond(struct roff *r, int, char *, int *);
1.234 kristaps 398: static int roff_evalnum(struct roff *, int,
399: const char *, int *, int *, int);
400: static int roff_evalpar(struct roff *, int,
1.261 schwarze 401: const char *, int *, int *, int);
1.198 schwarze 402: static int roff_evalstrcond(const char *, int *);
1.155 kristaps 403: static void roff_free1(struct roff *);
1.180 schwarze 404: static void roff_freereg(struct roffreg *);
1.167 kristaps 405: static void roff_freestr(struct roffkv *);
1.212 schwarze 406: static size_t roff_getname(struct roff *, char **, int, int);
1.261 schwarze 407: static int roff_getnum(const char *, int *, int *, int);
1.184 schwarze 408: static int roff_getop(const char *, int *, char *);
1.181 schwarze 409: static int roff_getregn(const struct roff *,
410: const char *, size_t);
1.273 schwarze 411: static int roff_getregro(const struct roff *,
412: const char *name);
1.207 schwarze 413: static const char *roff_getstrn(const struct roff *,
1.94 kristaps 414: const char *, size_t);
1.271 schwarze 415: static int roff_hasregn(const struct roff *,
416: const char *, size_t);
1.251 schwarze 417: static enum rofferr roff_insec(ROFF_ARGS);
1.178 schwarze 418: static enum rofferr roff_it(ROFF_ARGS);
1.103 kristaps 419: static enum rofferr roff_line_ignore(ROFF_ARGS);
1.265 schwarze 420: static void roff_man_alloc1(struct roff_man *);
421: static void roff_man_free1(struct roff_man *);
1.89 kristaps 422: static enum rofferr roff_nr(ROFF_ARGS);
1.214 schwarze 423: static enum rofft roff_parse(struct roff *, char *, int *,
424: int, int);
1.238 schwarze 425: static enum rofferr roff_parsetext(struct buf *, int, int *);
426: static enum rofferr roff_res(struct roff *, struct buf *, int, int);
1.122 schwarze 427: static enum rofferr roff_rm(ROFF_ARGS);
1.203 schwarze 428: static enum rofferr roff_rr(ROFF_ARGS);
1.94 kristaps 429: static void roff_setstr(struct roff *,
1.106 kristaps 430: const char *, const char *, int);
1.207 schwarze 431: static void roff_setstrn(struct roffkv **, const char *,
1.164 kristaps 432: size_t, const char *, size_t, int);
1.105 kristaps 433: static enum rofferr roff_so(ROFF_ARGS);
1.164 kristaps 434: static enum rofferr roff_tr(ROFF_ARGS);
1.175 schwarze 435: static enum rofferr roff_Dd(ROFF_ARGS);
436: static enum rofferr roff_TH(ROFF_ARGS);
1.109 kristaps 437: static enum rofferr roff_TE(ROFF_ARGS);
438: static enum rofferr roff_TS(ROFF_ARGS);
1.125 kristaps 439: static enum rofferr roff_EQ(ROFF_ARGS);
440: static enum rofferr roff_EN(ROFF_ARGS);
1.112 kristaps 441: static enum rofferr roff_T_(ROFF_ARGS);
1.251 schwarze 442: static enum rofferr roff_unsupp(ROFF_ARGS);
1.106 kristaps 443: static enum rofferr roff_userdef(ROFF_ARGS);
1.67 kristaps 444:
1.266 schwarze 445: /* --- constant data ------------------------------------------------------ */
446:
1.155 kristaps 447: /* See roffhash_find() */
1.85 kristaps 448:
449: #define ASCII_HI 126
450: #define ASCII_LO 33
451: #define HASHWIDTH (ASCII_HI - ASCII_LO + 1)
452:
1.261 schwarze 453: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
454: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
455:
1.85 kristaps 456: static struct roffmac *hash[HASHWIDTH];
457:
458: static struct roffmac roffs[ROFF_MAX] = {
1.251 schwarze 459: { "ab", roff_unsupp, NULL, NULL, 0, NULL },
1.103 kristaps 460: { "ad", roff_line_ignore, NULL, NULL, 0, NULL },
1.251 schwarze 461: { "af", roff_line_ignore, NULL, NULL, 0, NULL },
462: { "aln", roff_unsupp, NULL, NULL, 0, NULL },
463: { "als", roff_unsupp, NULL, NULL, 0, NULL },
1.85 kristaps 464: { "am", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.251 schwarze 465: { "am1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.85 kristaps 466: { "ami", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.251 schwarze 467: { "ami1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.193 schwarze 468: { "as", roff_ds, NULL, NULL, 0, NULL },
1.251 schwarze 469: { "as1", roff_ds, NULL, NULL, 0, NULL },
470: { "asciify", roff_unsupp, NULL, NULL, 0, NULL },
471: { "backtrace", roff_line_ignore, NULL, NULL, 0, NULL },
472: { "bd", roff_line_ignore, NULL, NULL, 0, NULL },
473: { "bleedat", roff_line_ignore, NULL, NULL, 0, NULL },
474: { "blm", roff_unsupp, NULL, NULL, 0, NULL },
475: { "box", roff_unsupp, NULL, NULL, 0, NULL },
476: { "boxa", roff_unsupp, NULL, NULL, 0, NULL },
477: { "bp", roff_line_ignore, NULL, NULL, 0, NULL },
478: { "BP", roff_unsupp, NULL, NULL, 0, NULL },
479: { "break", roff_unsupp, NULL, NULL, 0, NULL },
480: { "breakchar", roff_line_ignore, NULL, NULL, 0, NULL },
481: { "brnl", roff_line_ignore, NULL, NULL, 0, NULL },
482: { "brp", roff_brp, NULL, NULL, 0, NULL },
483: { "brpnl", roff_line_ignore, NULL, NULL, 0, NULL },
484: { "c2", roff_unsupp, NULL, NULL, 0, NULL },
1.174 kristaps 485: { "cc", roff_cc, NULL, NULL, 0, NULL },
1.194 schwarze 486: { "ce", roff_line_ignore, NULL, NULL, 0, NULL },
1.251 schwarze 487: { "cf", roff_insec, NULL, NULL, 0, NULL },
488: { "cflags", roff_line_ignore, NULL, NULL, 0, NULL },
489: { "ch", roff_line_ignore, NULL, NULL, 0, NULL },
490: { "char", roff_unsupp, NULL, NULL, 0, NULL },
491: { "chop", roff_unsupp, NULL, NULL, 0, NULL },
492: { "class", roff_line_ignore, NULL, NULL, 0, NULL },
493: { "close", roff_insec, NULL, NULL, 0, NULL },
494: { "CL", roff_unsupp, NULL, NULL, 0, NULL },
495: { "color", roff_line_ignore, NULL, NULL, 0, NULL },
496: { "composite", roff_unsupp, NULL, NULL, 0, NULL },
497: { "continue", roff_unsupp, NULL, NULL, 0, NULL },
498: { "cp", roff_line_ignore, NULL, NULL, 0, NULL },
499: { "cropat", roff_line_ignore, NULL, NULL, 0, NULL },
500: { "cs", roff_line_ignore, NULL, NULL, 0, NULL },
501: { "cu", roff_line_ignore, NULL, NULL, 0, NULL },
502: { "da", roff_unsupp, NULL, NULL, 0, NULL },
503: { "dch", roff_unsupp, NULL, NULL, 0, NULL },
504: { "Dd", roff_Dd, NULL, NULL, 0, NULL },
1.85 kristaps 505: { "de", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.251 schwarze 506: { "de1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
507: { "defcolor", roff_line_ignore, NULL, NULL, 0, NULL },
1.85 kristaps 508: { "dei", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.251 schwarze 509: { "dei1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
510: { "device", roff_unsupp, NULL, NULL, 0, NULL },
511: { "devicem", roff_unsupp, NULL, NULL, 0, NULL },
512: { "di", roff_unsupp, NULL, NULL, 0, NULL },
513: { "do", roff_unsupp, NULL, NULL, 0, NULL },
1.92 schwarze 514: { "ds", roff_ds, NULL, NULL, 0, NULL },
1.251 schwarze 515: { "ds1", roff_ds, NULL, NULL, 0, NULL },
516: { "dwh", roff_unsupp, NULL, NULL, 0, NULL },
517: { "dt", roff_unsupp, NULL, NULL, 0, NULL },
518: { "ec", roff_unsupp, NULL, NULL, 0, NULL },
519: { "ecr", roff_unsupp, NULL, NULL, 0, NULL },
520: { "ecs", roff_unsupp, NULL, NULL, 0, NULL },
1.85 kristaps 521: { "el", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
1.251 schwarze 522: { "em", roff_unsupp, NULL, NULL, 0, NULL },
523: { "EN", roff_EN, NULL, NULL, 0, NULL },
524: { "eo", roff_unsupp, NULL, NULL, 0, NULL },
525: { "EP", roff_unsupp, NULL, NULL, 0, NULL },
526: { "EQ", roff_EQ, NULL, NULL, 0, NULL },
527: { "errprint", roff_line_ignore, NULL, NULL, 0, NULL },
528: { "ev", roff_unsupp, NULL, NULL, 0, NULL },
529: { "evc", roff_unsupp, NULL, NULL, 0, NULL },
530: { "ex", roff_unsupp, NULL, NULL, 0, NULL },
531: { "fallback", roff_line_ignore, NULL, NULL, 0, NULL },
1.185 schwarze 532: { "fam", roff_line_ignore, NULL, NULL, 0, NULL },
1.251 schwarze 533: { "fc", roff_unsupp, NULL, NULL, 0, NULL },
534: { "fchar", roff_unsupp, NULL, NULL, 0, NULL },
535: { "fcolor", roff_line_ignore, NULL, NULL, 0, NULL },
536: { "fdeferlig", roff_line_ignore, NULL, NULL, 0, NULL },
537: { "feature", roff_line_ignore, NULL, NULL, 0, NULL },
538: { "fkern", roff_line_ignore, NULL, NULL, 0, NULL },
539: { "fl", roff_line_ignore, NULL, NULL, 0, NULL },
540: { "flig", roff_line_ignore, NULL, NULL, 0, NULL },
541: { "fp", roff_line_ignore, NULL, NULL, 0, NULL },
542: { "fps", roff_line_ignore, NULL, NULL, 0, NULL },
543: { "fschar", roff_unsupp, NULL, NULL, 0, NULL },
544: { "fspacewidth", roff_line_ignore, NULL, NULL, 0, NULL },
545: { "fspecial", roff_line_ignore, NULL, NULL, 0, NULL },
546: { "ftr", roff_line_ignore, NULL, NULL, 0, NULL },
547: { "fzoom", roff_line_ignore, NULL, NULL, 0, NULL },
548: { "gcolor", roff_line_ignore, NULL, NULL, 0, NULL },
549: { "hc", roff_line_ignore, NULL, NULL, 0, NULL },
550: { "hcode", roff_line_ignore, NULL, NULL, 0, NULL },
551: { "hidechar", roff_line_ignore, NULL, NULL, 0, NULL },
552: { "hla", roff_line_ignore, NULL, NULL, 0, NULL },
553: { "hlm", roff_line_ignore, NULL, NULL, 0, NULL },
554: { "hpf", roff_line_ignore, NULL, NULL, 0, NULL },
555: { "hpfa", roff_line_ignore, NULL, NULL, 0, NULL },
556: { "hpfcode", roff_line_ignore, NULL, NULL, 0, NULL },
1.186 schwarze 557: { "hw", roff_line_ignore, NULL, NULL, 0, NULL },
1.103 kristaps 558: { "hy", roff_line_ignore, NULL, NULL, 0, NULL },
1.251 schwarze 559: { "hylang", roff_line_ignore, NULL, NULL, 0, NULL },
560: { "hylen", roff_line_ignore, NULL, NULL, 0, NULL },
561: { "hym", roff_line_ignore, NULL, NULL, 0, NULL },
562: { "hypp", roff_line_ignore, NULL, NULL, 0, NULL },
563: { "hys", roff_line_ignore, NULL, NULL, 0, NULL },
1.85 kristaps 564: { "ie", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
565: { "if", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
566: { "ig", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.251 schwarze 567: { "index", roff_unsupp, NULL, NULL, 0, NULL },
1.178 schwarze 568: { "it", roff_it, NULL, NULL, 0, NULL },
1.251 schwarze 569: { "itc", roff_unsupp, NULL, NULL, 0, NULL },
570: { "IX", roff_line_ignore, NULL, NULL, 0, NULL },
571: { "kern", roff_line_ignore, NULL, NULL, 0, NULL },
572: { "kernafter", roff_line_ignore, NULL, NULL, 0, NULL },
573: { "kernbefore", roff_line_ignore, NULL, NULL, 0, NULL },
574: { "kernpair", roff_line_ignore, NULL, NULL, 0, NULL },
575: { "lc", roff_unsupp, NULL, NULL, 0, NULL },
576: { "lc_ctype", roff_unsupp, NULL, NULL, 0, NULL },
577: { "lds", roff_unsupp, NULL, NULL, 0, NULL },
578: { "length", roff_unsupp, NULL, NULL, 0, NULL },
579: { "letadj", roff_line_ignore, NULL, NULL, 0, NULL },
580: { "lf", roff_insec, NULL, NULL, 0, NULL },
581: { "lg", roff_line_ignore, NULL, NULL, 0, NULL },
582: { "lhang", roff_line_ignore, NULL, NULL, 0, NULL },
583: { "linetabs", roff_unsupp, NULL, NULL, 0, NULL },
584: { "lnr", roff_unsupp, NULL, NULL, 0, NULL },
585: { "lnrf", roff_unsupp, NULL, NULL, 0, NULL },
586: { "lpfx", roff_unsupp, NULL, NULL, 0, NULL },
587: { "ls", roff_line_ignore, NULL, NULL, 0, NULL },
588: { "lsm", roff_unsupp, NULL, NULL, 0, NULL },
589: { "lt", roff_line_ignore, NULL, NULL, 0, NULL },
590: { "mc", roff_line_ignore, NULL, NULL, 0, NULL },
591: { "mediasize", roff_line_ignore, NULL, NULL, 0, NULL },
592: { "minss", roff_line_ignore, NULL, NULL, 0, NULL },
593: { "mk", roff_line_ignore, NULL, NULL, 0, NULL },
594: { "mso", roff_insec, NULL, NULL, 0, NULL },
1.256 schwarze 595: { "na", roff_line_ignore, NULL, NULL, 0, NULL },
1.103 kristaps 596: { "ne", roff_line_ignore, NULL, NULL, 0, NULL },
597: { "nh", roff_line_ignore, NULL, NULL, 0, NULL },
1.251 schwarze 598: { "nhychar", roff_line_ignore, NULL, NULL, 0, NULL },
599: { "nm", roff_unsupp, NULL, NULL, 0, NULL },
600: { "nn", roff_unsupp, NULL, NULL, 0, NULL },
601: { "nop", roff_unsupp, NULL, NULL, 0, NULL },
1.104 kristaps 602: { "nr", roff_nr, NULL, NULL, 0, NULL },
1.251 schwarze 603: { "nrf", roff_unsupp, NULL, NULL, 0, NULL },
604: { "nroff", roff_line_ignore, NULL, NULL, 0, NULL },
1.124 schwarze 605: { "ns", roff_line_ignore, NULL, NULL, 0, NULL },
1.251 schwarze 606: { "nx", roff_insec, NULL, NULL, 0, NULL },
607: { "open", roff_insec, NULL, NULL, 0, NULL },
608: { "opena", roff_insec, NULL, NULL, 0, NULL },
609: { "os", roff_line_ignore, NULL, NULL, 0, NULL },
610: { "output", roff_unsupp, NULL, NULL, 0, NULL },
611: { "padj", roff_line_ignore, NULL, NULL, 0, NULL },
612: { "papersize", roff_line_ignore, NULL, NULL, 0, NULL },
613: { "pc", roff_line_ignore, NULL, NULL, 0, NULL },
614: { "pev", roff_line_ignore, NULL, NULL, 0, NULL },
615: { "pi", roff_insec, NULL, NULL, 0, NULL },
616: { "PI", roff_unsupp, NULL, NULL, 0, NULL },
1.229 schwarze 617: { "pl", roff_line_ignore, NULL, NULL, 0, NULL },
1.251 schwarze 618: { "pm", roff_line_ignore, NULL, NULL, 0, NULL },
619: { "pn", roff_line_ignore, NULL, NULL, 0, NULL },
620: { "pnr", roff_line_ignore, NULL, NULL, 0, NULL },
621: { "po", roff_line_ignore, NULL, NULL, 0, NULL },
1.124 schwarze 622: { "ps", roff_line_ignore, NULL, NULL, 0, NULL },
1.251 schwarze 623: { "psbb", roff_unsupp, NULL, NULL, 0, NULL },
1.255 schwarze 624: { "pshape", roff_unsupp, NULL, NULL, 0, NULL },
1.251 schwarze 625: { "pso", roff_insec, NULL, NULL, 0, NULL },
626: { "ptr", roff_line_ignore, NULL, NULL, 0, NULL },
627: { "pvs", roff_line_ignore, NULL, NULL, 0, NULL },
628: { "rchar", roff_unsupp, NULL, NULL, 0, NULL },
629: { "rd", roff_line_ignore, NULL, NULL, 0, NULL },
630: { "recursionlimit", roff_line_ignore, NULL, NULL, 0, NULL },
631: { "return", roff_unsupp, NULL, NULL, 0, NULL },
632: { "rfschar", roff_unsupp, NULL, NULL, 0, NULL },
633: { "rhang", roff_line_ignore, NULL, NULL, 0, NULL },
634: { "rj", roff_line_ignore, NULL, NULL, 0, NULL },
1.122 schwarze 635: { "rm", roff_rm, NULL, NULL, 0, NULL },
1.251 schwarze 636: { "rn", roff_unsupp, NULL, NULL, 0, NULL },
637: { "rnn", roff_unsupp, NULL, NULL, 0, NULL },
1.203 schwarze 638: { "rr", roff_rr, NULL, NULL, 0, NULL },
1.251 schwarze 639: { "rs", roff_line_ignore, NULL, NULL, 0, NULL },
640: { "rt", roff_line_ignore, NULL, NULL, 0, NULL },
641: { "schar", roff_unsupp, NULL, NULL, 0, NULL },
642: { "sentchar", roff_line_ignore, NULL, NULL, 0, NULL },
643: { "shc", roff_line_ignore, NULL, NULL, 0, NULL },
644: { "shift", roff_unsupp, NULL, NULL, 0, NULL },
645: { "sizes", roff_line_ignore, NULL, NULL, 0, NULL },
1.105 kristaps 646: { "so", roff_so, NULL, NULL, 0, NULL },
1.251 schwarze 647: { "spacewidth", roff_line_ignore, NULL, NULL, 0, NULL },
648: { "special", roff_line_ignore, NULL, NULL, 0, NULL },
649: { "spreadwarn", roff_line_ignore, NULL, NULL, 0, NULL },
650: { "ss", roff_line_ignore, NULL, NULL, 0, NULL },
651: { "sty", roff_line_ignore, NULL, NULL, 0, NULL },
652: { "substring", roff_unsupp, NULL, NULL, 0, NULL },
653: { "sv", roff_line_ignore, NULL, NULL, 0, NULL },
654: { "sy", roff_insec, NULL, NULL, 0, NULL },
655: { "T&", roff_T_, NULL, NULL, 0, NULL },
1.255 schwarze 656: { "ta", roff_unsupp, NULL, NULL, 0, NULL },
1.251 schwarze 657: { "tc", roff_unsupp, NULL, NULL, 0, NULL },
658: { "TE", roff_TE, NULL, NULL, 0, NULL },
659: { "TH", roff_TH, NULL, NULL, 0, NULL },
1.255 schwarze 660: { "ti", roff_unsupp, NULL, NULL, 0, NULL },
1.251 schwarze 661: { "tkf", roff_line_ignore, NULL, NULL, 0, NULL },
662: { "tl", roff_unsupp, NULL, NULL, 0, NULL },
663: { "tm", roff_line_ignore, NULL, NULL, 0, NULL },
664: { "tm1", roff_line_ignore, NULL, NULL, 0, NULL },
665: { "tmc", roff_line_ignore, NULL, NULL, 0, NULL },
1.164 kristaps 666: { "tr", roff_tr, NULL, NULL, 0, NULL },
1.251 schwarze 667: { "track", roff_line_ignore, NULL, NULL, 0, NULL },
668: { "transchar", roff_line_ignore, NULL, NULL, 0, NULL },
669: { "trf", roff_insec, NULL, NULL, 0, NULL },
670: { "trimat", roff_line_ignore, NULL, NULL, 0, NULL },
671: { "trin", roff_unsupp, NULL, NULL, 0, NULL },
672: { "trnt", roff_unsupp, NULL, NULL, 0, NULL },
673: { "troff", roff_line_ignore, NULL, NULL, 0, NULL },
1.109 kristaps 674: { "TS", roff_TS, NULL, NULL, 0, NULL },
1.251 schwarze 675: { "uf", roff_line_ignore, NULL, NULL, 0, NULL },
676: { "ul", roff_line_ignore, NULL, NULL, 0, NULL },
677: { "unformat", roff_unsupp, NULL, NULL, 0, NULL },
678: { "unwatch", roff_line_ignore, NULL, NULL, 0, NULL },
679: { "unwatchn", roff_line_ignore, NULL, NULL, 0, NULL },
680: { "vpt", roff_line_ignore, NULL, NULL, 0, NULL },
681: { "vs", roff_line_ignore, NULL, NULL, 0, NULL },
682: { "warn", roff_line_ignore, NULL, NULL, 0, NULL },
683: { "warnscale", roff_line_ignore, NULL, NULL, 0, NULL },
684: { "watch", roff_line_ignore, NULL, NULL, 0, NULL },
685: { "watchlength", roff_line_ignore, NULL, NULL, 0, NULL },
686: { "watchn", roff_line_ignore, NULL, NULL, 0, NULL },
687: { "wh", roff_unsupp, NULL, NULL, 0, NULL },
688: { "while", roff_unsupp, NULL, NULL, 0, NULL },
689: { "write", roff_insec, NULL, NULL, 0, NULL },
690: { "writec", roff_insec, NULL, NULL, 0, NULL },
691: { "writem", roff_insec, NULL, NULL, 0, NULL },
692: { "xflag", roff_line_ignore, NULL, NULL, 0, NULL },
1.85 kristaps 693: { ".", roff_cblock, NULL, NULL, 0, NULL },
1.106 kristaps 694: { NULL, roff_userdef, NULL, NULL, 0, NULL },
1.67 kristaps 695: };
696:
1.200 schwarze 697: /* not currently implemented: Ds em Eq LP Me PP pp Or Rd Sf SH */
1.175 schwarze 698: const char *const __mdoc_reserved[] = {
699: "Ac", "Ad", "An", "Ao", "Ap", "Aq", "Ar", "At",
700: "Bc", "Bd", "Bf", "Bk", "Bl", "Bo", "Bq",
701: "Brc", "Bro", "Brq", "Bsx", "Bt", "Bx",
702: "Cd", "Cm", "Db", "Dc", "Dd", "Dl", "Do", "Dq",
1.200 schwarze 703: "Dt", "Dv", "Dx", "D1",
704: "Ec", "Ed", "Ef", "Ek", "El", "Em",
705: "En", "Eo", "Er", "Es", "Ev", "Ex",
1.175 schwarze 706: "Fa", "Fc", "Fd", "Fl", "Fn", "Fo", "Fr", "Ft", "Fx",
1.200 schwarze 707: "Hf", "Ic", "In", "It", "Lb", "Li", "Lk", "Lp",
708: "Ms", "Mt", "Nd", "Nm", "No", "Ns", "Nx",
1.175 schwarze 709: "Oc", "Oo", "Op", "Os", "Ot", "Ox",
1.200 schwarze 710: "Pa", "Pc", "Pf", "Po", "Pp", "Pq",
711: "Qc", "Ql", "Qo", "Qq", "Re", "Rs", "Rv",
712: "Sc", "Sh", "Sm", "So", "Sq",
1.175 schwarze 713: "Ss", "St", "Sx", "Sy",
714: "Ta", "Tn", "Ud", "Ux", "Va", "Vt", "Xc", "Xo", "Xr",
1.200 schwarze 715: "%A", "%B", "%C", "%D", "%I", "%J", "%N", "%O",
1.175 schwarze 716: "%P", "%Q", "%R", "%T", "%U", "%V",
717: NULL
718: };
719:
1.200 schwarze 720: /* not currently implemented: BT DE DS ME MT PT SY TQ YS */
1.175 schwarze 721: const char *const __man_reserved[] = {
1.200 schwarze 722: "AT", "B", "BI", "BR", "DT",
723: "EE", "EN", "EQ", "EX", "HP", "I", "IB", "IP", "IR",
724: "LP", "OP", "P", "PD", "PP",
725: "R", "RB", "RE", "RI", "RS", "SB", "SH", "SM", "SS",
726: "TE", "TH", "TP", "TS", "T&", "UC", "UE", "UR",
1.175 schwarze 727: NULL
728: };
729:
1.141 kristaps 730: /* Array of injected predefined strings. */
731: #define PREDEFS_MAX 38
732: static const struct predef predefs[PREDEFS_MAX] = {
733: #include "predefs.in"
734: };
735:
1.155 kristaps 736: /* See roffhash_find() */
1.85 kristaps 737: #define ROFF_HASH(p) (p[0] - ASCII_LO)
738:
1.178 schwarze 739: static int roffit_lines; /* number of lines to delay */
740: static char *roffit_macro; /* nil-terminated macro line */
741:
1.207 schwarze 742:
1.266 schwarze 743: /* --- request table ------------------------------------------------------ */
744:
1.85 kristaps 745: static void
1.155 kristaps 746: roffhash_init(void)
1.85 kristaps 747: {
748: struct roffmac *n;
749: int buc, i;
750:
1.106 kristaps 751: for (i = 0; i < (int)ROFF_USERDEF; i++) {
1.85 kristaps 752: assert(roffs[i].name[0] >= ASCII_LO);
753: assert(roffs[i].name[0] <= ASCII_HI);
754:
755: buc = ROFF_HASH(roffs[i].name);
756:
757: if (NULL != (n = hash[buc])) {
758: for ( ; n->next; n = n->next)
759: /* Do nothing. */ ;
760: n->next = &roffs[i];
761: } else
762: hash[buc] = &roffs[i];
763: }
764: }
765:
1.67 kristaps 766: /*
767: * Look up a roff token by its name. Returns ROFF_MAX if no macro by
768: * the nil-terminated string name could be found.
769: */
770: static enum rofft
1.155 kristaps 771: roffhash_find(const char *p, size_t s)
1.67 kristaps 772: {
1.85 kristaps 773: int buc;
774: struct roffmac *n;
1.67 kristaps 775:
1.85 kristaps 776: /*
777: * libroff has an extremely simple hashtable, for the time
778: * being, which simply keys on the first character, which must
779: * be printable, then walks a chain. It works well enough until
780: * optimised.
781: */
782:
783: if (p[0] < ASCII_LO || p[0] > ASCII_HI)
1.277 schwarze 784: return ROFF_MAX;
1.85 kristaps 785:
786: buc = ROFF_HASH(p);
787:
788: if (NULL == (n = hash[buc]))
1.277 schwarze 789: return ROFF_MAX;
1.85 kristaps 790: for ( ; n; n = n->next)
1.106 kristaps 791: if (0 == strncmp(n->name, p, s) && '\0' == n->name[(int)s])
1.277 schwarze 792: return (enum rofft)(n - roffs);
1.67 kristaps 793:
1.277 schwarze 794: return ROFF_MAX;
1.67 kristaps 795: }
796:
1.266 schwarze 797: /* --- stack of request blocks -------------------------------------------- */
798:
1.67 kristaps 799: /*
800: * Pop the current node off of the stack of roff instructions currently
801: * pending.
802: */
803: static void
804: roffnode_pop(struct roff *r)
805: {
806: struct roffnode *p;
807:
1.75 kristaps 808: assert(r->last);
1.207 schwarze 809: p = r->last;
1.82 kristaps 810:
1.75 kristaps 811: r->last = r->last->parent;
1.106 kristaps 812: free(p->name);
813: free(p->end);
1.67 kristaps 814: free(p);
815: }
816:
817: /*
818: * Push a roff node onto the instruction stack. This must later be
819: * removed with roffnode_pop().
820: */
1.98 schwarze 821: static void
1.106 kristaps 822: roffnode_push(struct roff *r, enum rofft tok, const char *name,
823: int line, int col)
1.67 kristaps 824: {
825: struct roffnode *p;
826:
1.98 schwarze 827: p = mandoc_calloc(1, sizeof(struct roffnode));
1.67 kristaps 828: p->tok = tok;
1.106 kristaps 829: if (name)
830: p->name = mandoc_strdup(name);
1.67 kristaps 831: p->parent = r->last;
832: p->line = line;
833: p->col = col;
1.198 schwarze 834: p->rule = p->parent ? p->parent->rule : 0;
1.67 kristaps 835:
836: r->last = p;
837: }
838:
1.266 schwarze 839: /* --- roff parser state data management ---------------------------------- */
840:
1.67 kristaps 841: static void
842: roff_free1(struct roff *r)
843: {
1.176 schwarze 844: struct tbl_node *tbl;
1.125 kristaps 845: struct eqn_node *e;
1.167 kristaps 846: int i;
1.67 kristaps 847:
1.176 schwarze 848: while (NULL != (tbl = r->first_tbl)) {
849: r->first_tbl = tbl->next;
850: tbl_free(tbl);
1.109 kristaps 851: }
1.113 kristaps 852: r->first_tbl = r->last_tbl = r->tbl = NULL;
853:
1.125 kristaps 854: while (NULL != (e = r->first_eqn)) {
855: r->first_eqn = e->next;
856: eqn_free(e);
857: }
858: r->first_eqn = r->last_eqn = r->eqn = NULL;
859:
1.67 kristaps 860: while (r->last)
861: roffnode_pop(r);
1.109 kristaps 862:
1.223 schwarze 863: free (r->rstack);
864: r->rstack = NULL;
865: r->rstacksz = 0;
866: r->rstackpos = -1;
867:
868: roff_freereg(r->regtab);
869: r->regtab = NULL;
870:
1.167 kristaps 871: roff_freestr(r->strtab);
872: roff_freestr(r->xmbtab);
873: r->strtab = r->xmbtab = NULL;
874:
875: if (r->xtab)
876: for (i = 0; i < 128; i++)
877: free(r->xtab[i].p);
878: free(r->xtab);
879: r->xtab = NULL;
1.67 kristaps 880: }
881:
882: void
883: roff_reset(struct roff *r)
884: {
885:
886: roff_free1(r);
1.227 schwarze 887: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.174 kristaps 888: r->control = 0;
1.67 kristaps 889: }
890:
891: void
892: roff_free(struct roff *r)
893: {
894:
895: roff_free1(r);
896: free(r);
897: }
898:
899: struct roff *
1.279 schwarze 900: roff_alloc(struct mparse *parse, int options)
1.67 kristaps 901: {
902: struct roff *r;
903:
1.98 schwarze 904: r = mandoc_calloc(1, sizeof(struct roff));
1.128 kristaps 905: r->parse = parse;
1.199 schwarze 906: r->options = options;
1.227 schwarze 907: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.82 kristaps 908: r->rstackpos = -1;
1.207 schwarze 909:
1.155 kristaps 910: roffhash_init();
1.141 kristaps 911:
1.277 schwarze 912: return r;
1.265 schwarze 913: }
914:
1.266 schwarze 915: /* --- syntax tree state data management ---------------------------------- */
916:
1.265 schwarze 917: static void
918: roff_man_free1(struct roff_man *man)
919: {
920:
1.266 schwarze 921: if (man->first != NULL)
922: roff_node_delete(man, man->first);
1.265 schwarze 923: free(man->meta.msec);
924: free(man->meta.vol);
925: free(man->meta.os);
926: free(man->meta.arch);
927: free(man->meta.title);
928: free(man->meta.name);
929: free(man->meta.date);
930: }
931:
932: static void
933: roff_man_alloc1(struct roff_man *man)
934: {
935:
936: memset(&man->meta, 0, sizeof(man->meta));
937: man->first = mandoc_calloc(1, sizeof(*man->first));
938: man->first->type = ROFFT_ROOT;
939: man->last = man->first;
940: man->last_es = NULL;
941: man->flags = 0;
942: man->macroset = MACROSET_NONE;
943: man->lastsec = man->lastnamed = SEC_NONE;
944: man->next = ROFF_NEXT_CHILD;
945: }
946:
947: void
948: roff_man_reset(struct roff_man *man)
949: {
950:
951: roff_man_free1(man);
952: roff_man_alloc1(man);
953: }
954:
955: void
956: roff_man_free(struct roff_man *man)
957: {
958:
959: roff_man_free1(man);
960: free(man);
961: }
962:
963: struct roff_man *
964: roff_man_alloc(struct roff *roff, struct mparse *parse,
965: const char *defos, int quick)
966: {
967: struct roff_man *man;
968:
969: man = mandoc_calloc(1, sizeof(*man));
970: man->parse = parse;
971: man->roff = roff;
972: man->defos = defos;
973: man->quick = quick;
974: roff_man_alloc1(man);
1.277 schwarze 975: return man;
1.67 kristaps 976: }
977:
1.266 schwarze 978: /* --- syntax tree handling ----------------------------------------------- */
979:
980: struct roff_node *
981: roff_node_alloc(struct roff_man *man, int line, int pos,
982: enum roff_type type, int tok)
983: {
984: struct roff_node *n;
985:
986: n = mandoc_calloc(1, sizeof(*n));
987: n->line = line;
988: n->pos = pos;
989: n->tok = tok;
990: n->type = type;
991: n->sec = man->lastsec;
992:
993: if (man->flags & MDOC_SYNOPSIS)
994: n->flags |= MDOC_SYNPRETTY;
995: else
996: n->flags &= ~MDOC_SYNPRETTY;
997: if (man->flags & MDOC_NEWLINE)
998: n->flags |= MDOC_LINE;
999: man->flags &= ~MDOC_NEWLINE;
1000:
1.277 schwarze 1001: return n;
1.266 schwarze 1002: }
1003:
1004: void
1005: roff_node_append(struct roff_man *man, struct roff_node *n)
1006: {
1007:
1008: switch (man->next) {
1009: case ROFF_NEXT_SIBLING:
1.281 schwarze 1010: if (man->last->next != NULL) {
1011: n->next = man->last->next;
1012: man->last->next->prev = n;
1013: } else
1014: man->last->parent->last = n;
1.266 schwarze 1015: man->last->next = n;
1016: n->prev = man->last;
1017: n->parent = man->last->parent;
1018: break;
1019: case ROFF_NEXT_CHILD:
1020: man->last->child = n;
1021: n->parent = man->last;
1.281 schwarze 1022: n->parent->last = n;
1.266 schwarze 1023: break;
1024: default:
1025: abort();
1026: }
1027: n->parent->nchild++;
1.282 schwarze 1028: man->last = n;
1.266 schwarze 1029:
1030: switch (n->type) {
1031: case ROFFT_HEAD:
1032: n->parent->head = n;
1033: break;
1034: case ROFFT_BODY:
1.282 schwarze 1035: if (n->end != ENDBODY_NOT)
1036: return;
1.266 schwarze 1037: n->parent->body = n;
1038: break;
1039: case ROFFT_TAIL:
1040: n->parent->tail = n;
1041: break;
1042: default:
1.282 schwarze 1043: return;
1.266 schwarze 1044: }
1.282 schwarze 1045:
1046: /*
1047: * Copy over the normalised-data pointer of our parent. Not
1048: * everybody has one, but copying a null pointer is fine.
1049: */
1050:
1051: n->norm = n->parent->norm;
1052: assert(n->parent->type == ROFFT_BLOCK);
1.266 schwarze 1053: }
1054:
1.267 schwarze 1055: void
1056: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
1057: {
1058: struct roff_node *n;
1059:
1060: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
1061: n->string = roff_strdup(man->roff, word);
1062: roff_node_append(man, n);
1063: if (man->macroset == MACROSET_MDOC)
1.281 schwarze 1064: n->flags |= MDOC_VALID | MDOC_ENDED;
1.267 schwarze 1065: else
1.283 ! schwarze 1066: n->flags |= MAN_VALID;
1.267 schwarze 1067: man->next = ROFF_NEXT_SIBLING;
1068: }
1069:
1070: void
1071: roff_word_append(struct roff_man *man, const char *word)
1072: {
1073: struct roff_node *n;
1074: char *addstr, *newstr;
1075:
1076: n = man->last;
1077: addstr = roff_strdup(man->roff, word);
1078: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
1079: free(addstr);
1080: free(n->string);
1081: n->string = newstr;
1082: man->next = ROFF_NEXT_SIBLING;
1.268 schwarze 1083: }
1084:
1085: void
1086: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
1087: {
1088: struct roff_node *n;
1089:
1090: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
1091: roff_node_append(man, n);
1092: man->next = ROFF_NEXT_CHILD;
1093: }
1094:
1095: struct roff_node *
1096: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
1097: {
1098: struct roff_node *n;
1099:
1100: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
1101: roff_node_append(man, n);
1102: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1103: return n;
1.267 schwarze 1104: }
1105:
1.266 schwarze 1106: struct roff_node *
1107: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
1108: {
1109: struct roff_node *n;
1110:
1111: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
1112: roff_node_append(man, n);
1113: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1114: return n;
1.266 schwarze 1115: }
1116:
1117: struct roff_node *
1118: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1119: {
1120: struct roff_node *n;
1121:
1122: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1123: roff_node_append(man, n);
1124: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1125: return n;
1.267 schwarze 1126: }
1127:
1128: void
1129: roff_addeqn(struct roff_man *man, const struct eqn *eqn)
1130: {
1131: struct roff_node *n;
1132:
1133: n = roff_node_alloc(man, eqn->ln, eqn->pos, ROFFT_EQN, TOKEN_NONE);
1134: n->eqn = eqn;
1135: if (eqn->ln > man->last->line)
1136: n->flags |= MDOC_LINE;
1137: roff_node_append(man, n);
1138: man->next = ROFF_NEXT_SIBLING;
1139: }
1140:
1141: void
1142: roff_addtbl(struct roff_man *man, const struct tbl_span *tbl)
1143: {
1144: struct roff_node *n;
1145:
1146: if (man->macroset == MACROSET_MAN)
1147: man_breakscope(man, TOKEN_NONE);
1148: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
1149: n->span = tbl;
1150: roff_node_append(man, n);
1151: if (man->macroset == MACROSET_MDOC)
1.281 schwarze 1152: n->flags |= MDOC_VALID | MDOC_ENDED;
1.267 schwarze 1153: else
1.283 ! schwarze 1154: n->flags |= MAN_VALID;
1.267 schwarze 1155: man->next = ROFF_NEXT_SIBLING;
1.266 schwarze 1156: }
1157:
1158: void
1159: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1160: {
1161:
1162: /* Adjust siblings. */
1163:
1164: if (n->prev)
1165: n->prev->next = n->next;
1166: if (n->next)
1167: n->next->prev = n->prev;
1168:
1169: /* Adjust parent. */
1170:
1171: if (n->parent != NULL) {
1172: n->parent->nchild--;
1173: if (n->parent->child == n)
1174: n->parent->child = n->next;
1175: if (n->parent->last == n)
1176: n->parent->last = n->prev;
1177: }
1178:
1179: /* Adjust parse point. */
1180:
1181: if (man == NULL)
1182: return;
1183: if (man->last == n) {
1184: if (n->prev == NULL) {
1185: man->last = n->parent;
1186: man->next = ROFF_NEXT_CHILD;
1187: } else {
1188: man->last = n->prev;
1189: man->next = ROFF_NEXT_SIBLING;
1190: }
1191: }
1192: if (man->first == n)
1193: man->first = NULL;
1194: }
1195:
1196: void
1197: roff_node_free(struct roff_node *n)
1198: {
1199:
1200: if (n->args != NULL)
1201: mdoc_argv_free(n->args);
1202: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1203: free(n->norm);
1204: free(n->string);
1205: free(n);
1206: }
1207:
1208: void
1209: roff_node_delete(struct roff_man *man, struct roff_node *n)
1210: {
1211:
1212: while (n->child != NULL)
1213: roff_node_delete(man, n->child);
1214: assert(n->nchild == 0);
1215: roff_node_unlink(man, n);
1216: roff_node_free(n);
1.269 schwarze 1217: }
1218:
1219: void
1220: deroff(char **dest, const struct roff_node *n)
1221: {
1222: char *cp;
1223: size_t sz;
1224:
1225: if (n->type != ROFFT_TEXT) {
1226: for (n = n->child; n != NULL; n = n->next)
1227: deroff(dest, n);
1228: return;
1229: }
1230:
1231: /* Skip leading whitespace and escape sequences. */
1232:
1233: cp = n->string;
1234: while (*cp != '\0') {
1235: if ('\\' == *cp) {
1236: cp++;
1237: mandoc_escape((const char **)&cp, NULL, NULL);
1238: } else if (isspace((unsigned char)*cp))
1239: cp++;
1240: else
1241: break;
1242: }
1243:
1244: /* Skip trailing whitespace. */
1245:
1246: for (sz = strlen(cp); sz; sz--)
1247: if ( ! isspace((unsigned char)cp[sz-1]))
1248: break;
1249:
1250: /* Skip empty strings. */
1251:
1252: if (sz == 0)
1253: return;
1254:
1255: if (*dest == NULL) {
1256: *dest = mandoc_strndup(cp, sz);
1257: return;
1258: }
1259:
1260: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1261: free(*dest);
1262: *dest = cp;
1.266 schwarze 1263: }
1264:
1265: /* --- main functions of the roff parser ---------------------------------- */
1266:
1.94 kristaps 1267: /*
1.206 schwarze 1268: * In the current line, expand escape sequences that tend to get
1269: * used in numerical expressions and conditional requests.
1270: * Also check the syntax of the remaining escape sequences.
1.154 kristaps 1271: */
1.172 schwarze 1272: static enum rofferr
1.238 schwarze 1273: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.94 kristaps 1274: {
1.208 schwarze 1275: char ubuf[24]; /* buffer to print the number */
1.205 schwarze 1276: const char *start; /* start of the string to process */
1.209 schwarze 1277: char *stesc; /* start of an escape sequence ('\\') */
1.108 schwarze 1278: const char *stnam; /* start of the name, after "[(*" */
1279: const char *cp; /* end of the name, e.g. before ']' */
1280: const char *res; /* the string to be substituted */
1.238 schwarze 1281: char *nbuf; /* new buffer to copy buf->buf to */
1.181 schwarze 1282: size_t maxl; /* expected length of the escape name */
1283: size_t naml; /* actual length of the escape name */
1.237 schwarze 1284: enum mandoc_esc esc; /* type of the escape sequence */
1285: int inaml; /* length returned from mandoc_escape() */
1.181 schwarze 1286: int expand_count; /* to avoid infinite loops */
1.206 schwarze 1287: int npos; /* position in numeric expression */
1.218 schwarze 1288: int arg_complete; /* argument not interrupted by eol */
1.206 schwarze 1289: char term; /* character terminating the escape */
1.94 kristaps 1290:
1.170 schwarze 1291: expand_count = 0;
1.238 schwarze 1292: start = buf->buf + pos;
1.205 schwarze 1293: stesc = strchr(start, '\0') - 1;
1294: while (stesc-- > start) {
1.170 schwarze 1295:
1.205 schwarze 1296: /* Search backwards for the next backslash. */
1297:
1.238 schwarze 1298: if (*stesc != '\\')
1.205 schwarze 1299: continue;
1300:
1301: /* If it is escaped, skip it. */
1302:
1303: for (cp = stesc - 1; cp >= start; cp--)
1.238 schwarze 1304: if (*cp != '\\')
1.205 schwarze 1305: break;
1306:
1.238 schwarze 1307: if ((stesc - cp) % 2 == 0) {
1.209 schwarze 1308: stesc = (char *)cp;
1.205 schwarze 1309: continue;
1310: }
1.108 schwarze 1311:
1.206 schwarze 1312: /* Decide whether to expand or to check only. */
1.108 schwarze 1313:
1.206 schwarze 1314: term = '\0';
1.205 schwarze 1315: cp = stesc + 1;
1.181 schwarze 1316: switch (*cp) {
1.207 schwarze 1317: case '*':
1.181 schwarze 1318: res = NULL;
1319: break;
1.207 schwarze 1320: case 'B':
1321: case 'w':
1.206 schwarze 1322: term = cp[1];
1323: /* FALLTHROUGH */
1.207 schwarze 1324: case 'n':
1.181 schwarze 1325: res = ubuf;
1326: break;
1327: default:
1.237 schwarze 1328: esc = mandoc_escape(&cp, &stnam, &inaml);
1329: if (esc == ESCAPE_ERROR ||
1330: (esc == ESCAPE_SPECIAL &&
1.279 schwarze 1331: mchars_spec2cp(stnam, inaml) < 0))
1.219 schwarze 1332: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.238 schwarze 1333: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1334: "%.*s", (int)(cp - stesc), stesc);
1.205 schwarze 1335: continue;
1.152 kristaps 1336: }
1337:
1.205 schwarze 1338: if (EXPAND_LIMIT < ++expand_count) {
1339: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.238 schwarze 1340: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1341: return ROFF_IGN;
1.205 schwarze 1342: }
1.108 schwarze 1343:
1344: /*
1345: * The third character decides the length
1.181 schwarze 1346: * of the name of the string or register.
1.108 schwarze 1347: * Save a pointer to the name.
1348: */
1349:
1.238 schwarze 1350: if (term == '\0') {
1.206 schwarze 1351: switch (*++cp) {
1.207 schwarze 1352: case '\0':
1.206 schwarze 1353: maxl = 0;
1354: break;
1.207 schwarze 1355: case '(':
1.206 schwarze 1356: cp++;
1357: maxl = 2;
1358: break;
1.207 schwarze 1359: case '[':
1.206 schwarze 1360: cp++;
1361: term = ']';
1362: maxl = 0;
1363: break;
1364: default:
1365: maxl = 1;
1366: break;
1367: }
1368: } else {
1369: cp += 2;
1.94 kristaps 1370: maxl = 0;
1371: }
1.108 schwarze 1372: stnam = cp;
1.94 kristaps 1373:
1.108 schwarze 1374: /* Advance to the end of the name. */
1.94 kristaps 1375:
1.253 schwarze 1376: naml = 0;
1.218 schwarze 1377: arg_complete = 1;
1.253 schwarze 1378: while (maxl == 0 || naml < maxl) {
1.238 schwarze 1379: if (*cp == '\0') {
1.219 schwarze 1380: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 1381: ln, (int)(stesc - buf->buf), stesc);
1.218 schwarze 1382: arg_complete = 0;
1.206 schwarze 1383: break;
1.153 kristaps 1384: }
1.238 schwarze 1385: if (maxl == 0 && *cp == term) {
1.206 schwarze 1386: cp++;
1.253 schwarze 1387: break;
1388: }
1389: if (*cp++ != '\\' || stesc[1] != 'w') {
1390: naml++;
1391: continue;
1392: }
1393: switch (mandoc_escape(&cp, NULL, NULL)) {
1394: case ESCAPE_SPECIAL:
1395: case ESCAPE_UNICODE:
1396: case ESCAPE_NUMBERED:
1397: case ESCAPE_OVERSTRIKE:
1398: naml++;
1399: break;
1400: default:
1.94 kristaps 1401: break;
1.206 schwarze 1402: }
1.94 kristaps 1403: }
1404:
1.108 schwarze 1405: /*
1406: * Retrieve the replacement string; if it is
1407: * undefined, resume searching for escapes.
1408: */
1409:
1.206 schwarze 1410: switch (stesc[1]) {
1.207 schwarze 1411: case '*':
1.218 schwarze 1412: if (arg_complete)
1413: res = roff_getstrn(r, stnam, naml);
1.206 schwarze 1414: break;
1.207 schwarze 1415: case 'B':
1.206 schwarze 1416: npos = 0;
1.218 schwarze 1417: ubuf[0] = arg_complete &&
1.261 schwarze 1418: roff_evalnum(r, ln, stnam, &npos,
1419: NULL, ROFFNUM_SCALE) &&
1.218 schwarze 1420: stnam + npos + 1 == cp ? '1' : '0';
1.206 schwarze 1421: ubuf[1] = '\0';
1422: break;
1.207 schwarze 1423: case 'n':
1.218 schwarze 1424: if (arg_complete)
1425: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1426: roff_getregn(r, stnam, naml));
1427: else
1428: ubuf[0] = '\0';
1.206 schwarze 1429: break;
1.207 schwarze 1430: case 'w':
1.218 schwarze 1431: /* use even incomplete args */
1.208 schwarze 1432: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.206 schwarze 1433: 24 * (int)naml);
1434: break;
1435: }
1.94 kristaps 1436:
1.238 schwarze 1437: if (res == NULL) {
1.219 schwarze 1438: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1439: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1440: "%.*s", (int)naml, stnam);
1.142 kristaps 1441: res = "";
1.246 schwarze 1442: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1443: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1444: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1445: return ROFF_IGN;
1.94 kristaps 1446: }
1447:
1.108 schwarze 1448: /* Replace the escape sequence by the string. */
1449:
1.209 schwarze 1450: *stesc = '\0';
1.238 schwarze 1451: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1452: buf->buf, res, cp) + 1;
1.94 kristaps 1453:
1.205 schwarze 1454: /* Prepare for the next replacement. */
1.94 kristaps 1455:
1.205 schwarze 1456: start = nbuf + pos;
1.238 schwarze 1457: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1458: free(buf->buf);
1459: buf->buf = nbuf;
1.154 kristaps 1460: }
1.277 schwarze 1461: return ROFF_CONT;
1.154 kristaps 1462: }
1463:
1464: /*
1.275 schwarze 1465: * Process text streams.
1.154 kristaps 1466: */
1467: static enum rofferr
1.238 schwarze 1468: roff_parsetext(struct buf *buf, int pos, int *offs)
1.154 kristaps 1469: {
1470: size_t sz;
1471: const char *start;
1.178 schwarze 1472: char *p;
1473: int isz;
1.154 kristaps 1474: enum mandoc_esc esc;
1475:
1.275 schwarze 1476: /* Spring the input line trap. */
1477:
1478: if (roffit_lines == 1) {
1479: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1480: free(buf->buf);
1481: buf->buf = p;
1482: buf->sz = isz + 1;
1483: *offs = 0;
1484: free(roffit_macro);
1485: roffit_lines = 0;
1.277 schwarze 1486: return ROFF_REPARSE;
1.275 schwarze 1487: } else if (roffit_lines > 1)
1488: --roffit_lines;
1489:
1490: /* Convert all breakable hyphens into ASCII_HYPH. */
1491:
1.238 schwarze 1492: start = p = buf->buf + pos;
1.154 kristaps 1493:
1.238 schwarze 1494: while (*p != '\0') {
1.154 kristaps 1495: sz = strcspn(p, "-\\");
1496: p += sz;
1497:
1.238 schwarze 1498: if (*p == '\0')
1.159 kristaps 1499: break;
1500:
1.238 schwarze 1501: if (*p == '\\') {
1.154 kristaps 1502: /* Skip over escapes. */
1503: p++;
1.189 schwarze 1504: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.238 schwarze 1505: if (esc == ESCAPE_ERROR)
1.154 kristaps 1506: break;
1.264 schwarze 1507: while (*p == '-')
1508: p++;
1.155 kristaps 1509: continue;
1.159 kristaps 1510: } else if (p == start) {
1.158 kristaps 1511: p++;
1.155 kristaps 1512: continue;
1.158 kristaps 1513: }
1.155 kristaps 1514:
1.171 schwarze 1515: if (isalpha((unsigned char)p[-1]) &&
1516: isalpha((unsigned char)p[1]))
1.155 kristaps 1517: *p = ASCII_HYPH;
1518: p++;
1.94 kristaps 1519: }
1.277 schwarze 1520: return ROFF_CONT;
1.94 kristaps 1521: }
1522:
1.67 kristaps 1523: enum rofferr
1.238 schwarze 1524: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.67 kristaps 1525: {
1526: enum rofft t;
1.109 kristaps 1527: enum rofferr e;
1.238 schwarze 1528: int pos; /* parse point */
1.243 schwarze 1529: int spos; /* saved parse point for messages */
1.238 schwarze 1530: int ppos; /* original offset in buf->buf */
1531: int ctl; /* macro line (boolean) */
1532:
1533: ppos = pos = *offs;
1.79 kristaps 1534:
1.230 schwarze 1535: /* Handle in-line equation delimiters. */
1536:
1.236 schwarze 1537: if (r->tbl == NULL &&
1538: r->last_eqn != NULL && r->last_eqn->delim &&
1.230 schwarze 1539: (r->eqn == NULL || r->eqn_inline)) {
1.238 schwarze 1540: e = roff_eqndelim(r, buf, pos);
1.230 schwarze 1541: if (e == ROFF_REPARSE)
1.277 schwarze 1542: return e;
1.230 schwarze 1543: assert(e == ROFF_CONT);
1544: }
1545:
1546: /* Expand some escape sequences. */
1.94 kristaps 1547:
1.238 schwarze 1548: e = roff_res(r, buf, ln, pos);
1549: if (e == ROFF_IGN)
1.277 schwarze 1550: return e;
1.238 schwarze 1551: assert(e == ROFF_CONT);
1.94 kristaps 1552:
1.238 schwarze 1553: ctl = roff_getcontrol(r, buf->buf, &pos);
1.130 kristaps 1554:
1.94 kristaps 1555: /*
1.79 kristaps 1556: * First, if a scope is open and we're not a macro, pass the
1.252 schwarze 1557: * text through the macro's filter.
1558: * Equations process all content themselves.
1559: * Tables process almost all content themselves, but we want
1560: * to warn about macros before passing it there.
1.79 kristaps 1561: */
1.74 kristaps 1562:
1.252 schwarze 1563: if (r->last != NULL && ! ctl) {
1.78 kristaps 1564: t = r->last->tok;
1565: assert(roffs[t].text);
1.238 schwarze 1566: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1567: assert(e == ROFF_IGN || e == ROFF_CONT);
1568: if (e != ROFF_CONT)
1.277 schwarze 1569: return e;
1.182 schwarze 1570: }
1.252 schwarze 1571: if (r->eqn != NULL)
1.277 schwarze 1572: return eqn_read(&r->eqn, ln, buf->buf, ppos, offs);
1.252 schwarze 1573: if (r->tbl != NULL && ( ! ctl || buf->buf[pos] == '\0'))
1.277 schwarze 1574: return tbl_read(r->tbl, ln, buf->buf, ppos);
1.252 schwarze 1575: if ( ! ctl)
1.277 schwarze 1576: return roff_parsetext(buf, pos, offs);
1.228 schwarze 1577:
1578: /* Skip empty request lines. */
1579:
1.238 schwarze 1580: if (buf->buf[pos] == '"') {
1.228 schwarze 1581: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1582: ln, pos, NULL);
1.277 schwarze 1583: return ROFF_IGN;
1.238 schwarze 1584: } else if (buf->buf[pos] == '\0')
1.277 schwarze 1585: return ROFF_IGN;
1.67 kristaps 1586:
1.79 kristaps 1587: /*
1588: * If a scope is open, go to the child handler for that macro,
1589: * as it may want to preprocess before doing anything with it.
1.125 kristaps 1590: * Don't do so if an equation is open.
1.79 kristaps 1591: */
1.78 kristaps 1592:
1.79 kristaps 1593: if (r->last) {
1594: t = r->last->tok;
1595: assert(roffs[t].sub);
1.277 schwarze 1596: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1597: }
1.78 kristaps 1598:
1.243 schwarze 1599: /* No scope is open. This is a new request or macro. */
1600:
1601: spos = pos;
1602: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1603:
1604: /* Tables ignore most macros. */
1605:
1606: if (r->tbl != NULL && (t == ROFF_MAX || t == ROFF_TS)) {
1607: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1608: ln, pos, buf->buf + spos);
1.257 schwarze 1609: if (t == ROFF_TS)
1.277 schwarze 1610: return ROFF_IGN;
1.257 schwarze 1611: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1612: pos++;
1613: while (buf->buf[pos] != '\0' && buf->buf[pos] == ' ')
1614: pos++;
1.277 schwarze 1615: return tbl_read(r->tbl, ln, buf->buf, pos);
1.243 schwarze 1616: }
1617:
1.79 kristaps 1618: /*
1.243 schwarze 1619: * This is neither a roff request nor a user-defined macro.
1620: * Let the standard macro set parsers handle it.
1.79 kristaps 1621: */
1.67 kristaps 1622:
1.243 schwarze 1623: if (t == ROFF_MAX)
1.277 schwarze 1624: return ROFF_CONT;
1.243 schwarze 1625:
1626: /* Execute a roff request or a user defined macro. */
1.67 kristaps 1627:
1.75 kristaps 1628: assert(roffs[t].proc);
1.277 schwarze 1629: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.74 kristaps 1630: }
1631:
1.117 kristaps 1632: void
1.74 kristaps 1633: roff_endparse(struct roff *r)
1634: {
1635:
1.110 kristaps 1636: if (r->last)
1.221 schwarze 1637: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1638: r->last->line, r->last->col,
1639: roffs[r->last->tok].name);
1.117 kristaps 1640:
1.125 kristaps 1641: if (r->eqn) {
1.221 schwarze 1642: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1643: r->eqn->eqn.ln, r->eqn->eqn.pos, "EQ");
1.151 kristaps 1644: eqn_end(&r->eqn);
1.125 kristaps 1645: }
1646:
1.117 kristaps 1647: if (r->tbl) {
1.221 schwarze 1648: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1649: r->tbl->line, r->tbl->pos, "TS");
1.151 kristaps 1650: tbl_end(&r->tbl);
1.117 kristaps 1651: }
1.67 kristaps 1652: }
1653:
1654: /*
1655: * Parse a roff node's type from the input buffer. This must be in the
1656: * form of ".foo xxx" in the usual way.
1657: */
1658: static enum rofft
1.214 schwarze 1659: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.67 kristaps 1660: {
1.214 schwarze 1661: char *cp;
1.106 kristaps 1662: const char *mac;
1663: size_t maclen;
1.67 kristaps 1664: enum rofft t;
1665:
1.214 schwarze 1666: cp = buf + *pos;
1667:
1668: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.277 schwarze 1669: return ROFF_MAX;
1.67 kristaps 1670:
1.214 schwarze 1671: mac = cp;
1672: maclen = roff_getname(r, &cp, ln, ppos);
1.67 kristaps 1673:
1.106 kristaps 1674: t = (r->current_string = roff_getstrn(r, mac, maclen))
1.155 kristaps 1675: ? ROFF_USERDEF : roffhash_find(mac, maclen);
1.67 kristaps 1676:
1.214 schwarze 1677: if (ROFF_MAX != t)
1678: *pos = cp - buf;
1.67 kristaps 1679:
1.277 schwarze 1680: return t;
1.67 kristaps 1681: }
1682:
1.266 schwarze 1683: /* --- handling of request blocks ----------------------------------------- */
1684:
1.67 kristaps 1685: static enum rofferr
1.76 kristaps 1686: roff_cblock(ROFF_ARGS)
1.67 kristaps 1687: {
1688:
1.79 kristaps 1689: /*
1690: * A block-close `..' should only be invoked as a child of an
1691: * ignore macro, otherwise raise a warning and just ignore it.
1692: */
1693:
1.238 schwarze 1694: if (r->last == NULL) {
1.221 schwarze 1695: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1696: ln, ppos, "..");
1.277 schwarze 1697: return ROFF_IGN;
1.76 kristaps 1698: }
1.67 kristaps 1699:
1.81 kristaps 1700: switch (r->last->tok) {
1.207 schwarze 1701: case ROFF_am:
1.220 schwarze 1702: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.207 schwarze 1703: case ROFF_ami:
1704: case ROFF_de:
1.108 schwarze 1705: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.207 schwarze 1706: case ROFF_dei:
1707: case ROFF_ig:
1.81 kristaps 1708: break;
1709: default:
1.221 schwarze 1710: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1711: ln, ppos, "..");
1.277 schwarze 1712: return ROFF_IGN;
1.76 kristaps 1713: }
1.67 kristaps 1714:
1.238 schwarze 1715: if (buf->buf[pos] != '\0')
1.217 schwarze 1716: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 1717: ".. %s", buf->buf + pos);
1.71 kristaps 1718:
1719: roffnode_pop(r);
1.76 kristaps 1720: roffnode_cleanscope(r);
1.277 schwarze 1721: return ROFF_IGN;
1.71 kristaps 1722:
1.67 kristaps 1723: }
1724:
1.76 kristaps 1725: static void
1726: roffnode_cleanscope(struct roff *r)
1.67 kristaps 1727: {
1728:
1.76 kristaps 1729: while (r->last) {
1.173 schwarze 1730: if (--r->last->endspan != 0)
1.76 kristaps 1731: break;
1732: roffnode_pop(r);
1733: }
1.67 kristaps 1734: }
1735:
1.195 schwarze 1736: static void
1737: roff_ccond(struct roff *r, int ln, int ppos)
1.74 kristaps 1738: {
1739:
1.76 kristaps 1740: if (NULL == r->last) {
1.221 schwarze 1741: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1742: ln, ppos, "\\}");
1.195 schwarze 1743: return;
1.76 kristaps 1744: }
1745:
1.82 kristaps 1746: switch (r->last->tok) {
1.207 schwarze 1747: case ROFF_el:
1748: case ROFF_ie:
1749: case ROFF_if:
1.82 kristaps 1750: break;
1751: default:
1.221 schwarze 1752: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1753: ln, ppos, "\\}");
1.195 schwarze 1754: return;
1.75 kristaps 1755: }
1756:
1.76 kristaps 1757: if (r->last->endspan > -1) {
1.221 schwarze 1758: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1759: ln, ppos, "\\}");
1.195 schwarze 1760: return;
1.76 kristaps 1761: }
1762:
1.75 kristaps 1763: roffnode_pop(r);
1.76 kristaps 1764: roffnode_cleanscope(r);
1.195 schwarze 1765: return;
1.76 kristaps 1766: }
1767:
1768: static enum rofferr
1.80 kristaps 1769: roff_block(ROFF_ARGS)
1.76 kristaps 1770: {
1.220 schwarze 1771: const char *name;
1772: char *iname, *cp;
1.213 schwarze 1773: size_t namesz;
1.106 kristaps 1774:
1.220 schwarze 1775: /* Ignore groff compatibility mode for now. */
1.76 kristaps 1776:
1.238 schwarze 1777: if (tok == ROFF_de1)
1.220 schwarze 1778: tok = ROFF_de;
1.251 schwarze 1779: else if (tok == ROFF_dei1)
1780: tok = ROFF_dei;
1.238 schwarze 1781: else if (tok == ROFF_am1)
1.220 schwarze 1782: tok = ROFF_am;
1.251 schwarze 1783: else if (tok == ROFF_ami1)
1784: tok = ROFF_ami;
1.220 schwarze 1785:
1786: /* Parse the macro name argument. */
1787:
1.238 schwarze 1788: cp = buf->buf + pos;
1789: if (tok == ROFF_ig) {
1.220 schwarze 1790: iname = NULL;
1791: namesz = 0;
1792: } else {
1793: iname = cp;
1794: namesz = roff_getname(r, &cp, ln, ppos);
1795: iname[namesz] = '\0';
1796: }
1.107 kristaps 1797:
1.220 schwarze 1798: /* Resolve the macro name argument if it is indirect. */
1.107 kristaps 1799:
1.238 schwarze 1800: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1801: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.220 schwarze 1802: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1803: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1804: "%.*s", (int)namesz, iname);
1805: namesz = 0;
1806: } else
1807: namesz = strlen(name);
1808: } else
1809: name = iname;
1.107 kristaps 1810:
1.238 schwarze 1811: if (namesz == 0 && tok != ROFF_ig) {
1.220 schwarze 1812: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1813: ln, ppos, roffs[tok].name);
1.277 schwarze 1814: return ROFF_IGN;
1.220 schwarze 1815: }
1.80 kristaps 1816:
1.106 kristaps 1817: roffnode_push(r, tok, name, ln, ppos);
1818:
1819: /*
1820: * At the beginning of a `de' macro, clear the existing string
1821: * with the same name, if there is one. New content will be
1.193 schwarze 1822: * appended from roff_block_text() in multiline mode.
1.106 kristaps 1823: */
1.107 kristaps 1824:
1.238 schwarze 1825: if (tok == ROFF_de || tok == ROFF_dei)
1.213 schwarze 1826: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.76 kristaps 1827:
1.238 schwarze 1828: if (*cp == '\0')
1.277 schwarze 1829: return ROFF_IGN;
1.78 kristaps 1830:
1.220 schwarze 1831: /* Get the custom end marker. */
1.107 kristaps 1832:
1.220 schwarze 1833: iname = cp;
1.213 schwarze 1834: namesz = roff_getname(r, &cp, ln, ppos);
1.220 schwarze 1835:
1836: /* Resolve the end marker if it is indirect. */
1837:
1.238 schwarze 1838: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1839: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.220 schwarze 1840: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1841: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1842: "%.*s", (int)namesz, iname);
1843: namesz = 0;
1844: } else
1845: namesz = strlen(name);
1846: } else
1847: name = iname;
1848:
1.213 schwarze 1849: if (namesz)
1850: r->last->end = mandoc_strndup(name, namesz);
1.78 kristaps 1851:
1.238 schwarze 1852: if (*cp != '\0')
1.217 schwarze 1853: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1854: ln, pos, ".%s ... %s", roffs[tok].name, cp);
1.74 kristaps 1855:
1.277 schwarze 1856: return ROFF_IGN;
1.78 kristaps 1857: }
1858:
1859: static enum rofferr
1.80 kristaps 1860: roff_block_sub(ROFF_ARGS)
1.79 kristaps 1861: {
1862: enum rofft t;
1863: int i, j;
1864:
1865: /*
1866: * First check whether a custom macro exists at this level. If
1867: * it does, then check against it. This is some of groff's
1868: * stranger behaviours. If we encountered a custom end-scope
1869: * tag and that tag also happens to be a "real" macro, then we
1870: * need to try interpreting it again as a real macro. If it's
1871: * not, then return ignore. Else continue.
1872: */
1873:
1874: if (r->last->end) {
1.130 kristaps 1875: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.238 schwarze 1876: if (buf->buf[i] != r->last->end[j])
1.79 kristaps 1877: break;
1878:
1.238 schwarze 1879: if (r->last->end[j] == '\0' &&
1880: (buf->buf[i] == '\0' ||
1881: buf->buf[i] == ' ' ||
1882: buf->buf[i] == '\t')) {
1.79 kristaps 1883: roffnode_pop(r);
1884: roffnode_cleanscope(r);
1885:
1.238 schwarze 1886: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.130 kristaps 1887: i++;
1888:
1889: pos = i;
1.238 schwarze 1890: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1891: ROFF_MAX)
1.277 schwarze 1892: return ROFF_RERUN;
1893: return ROFF_IGN;
1.79 kristaps 1894: }
1895: }
1896:
1897: /*
1898: * If we have no custom end-query or lookup failed, then try
1899: * pulling it out of the hashtable.
1900: */
1901:
1.238 schwarze 1902: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.79 kristaps 1903:
1.238 schwarze 1904: if (t != ROFF_cblock) {
1905: if (tok != ROFF_ig)
1906: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.277 schwarze 1907: return ROFF_IGN;
1.106 kristaps 1908: }
1.79 kristaps 1909:
1910: assert(roffs[t].proc);
1.277 schwarze 1911: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1912: }
1913:
1914: static enum rofferr
1.80 kristaps 1915: roff_block_text(ROFF_ARGS)
1.78 kristaps 1916: {
1917:
1.238 schwarze 1918: if (tok != ROFF_ig)
1919: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.106 kristaps 1920:
1.277 schwarze 1921: return ROFF_IGN;
1.78 kristaps 1922: }
1923:
1924: static enum rofferr
1.82 kristaps 1925: roff_cond_sub(ROFF_ARGS)
1926: {
1927: enum rofft t;
1.139 kristaps 1928: char *ep;
1.198 schwarze 1929: int rr;
1.82 kristaps 1930:
1931: rr = r->last->rule;
1.139 kristaps 1932: roffnode_cleanscope(r);
1.238 schwarze 1933: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.82 kristaps 1934:
1.139 kristaps 1935: /*
1.177 schwarze 1936: * Fully handle known macros when they are structurally
1937: * required or when the conditional evaluated to true.
1.87 kristaps 1938: */
1939:
1.238 schwarze 1940: if ((t != ROFF_MAX) &&
1941: (rr || roffs[t].flags & ROFFMAC_STRUCT)) {
1.177 schwarze 1942: assert(roffs[t].proc);
1.277 schwarze 1943: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.177 schwarze 1944: }
1.144 kristaps 1945:
1.196 schwarze 1946: /*
1947: * If `\}' occurs on a macro line without a preceding macro,
1948: * drop the line completely.
1949: */
1950:
1.238 schwarze 1951: ep = buf->buf + pos;
1952: if (ep[0] == '\\' && ep[1] == '}')
1.198 schwarze 1953: rr = 0;
1.196 schwarze 1954:
1.177 schwarze 1955: /* Always check for the closing delimiter `\}'. */
1.144 kristaps 1956:
1.238 schwarze 1957: while ((ep = strchr(ep, '\\')) != NULL) {
1958: if (*(++ep) == '}') {
1.197 schwarze 1959: *ep = '&';
1.238 schwarze 1960: roff_ccond(r, ln, ep - buf->buf - 1);
1.197 schwarze 1961: }
1.247 schwarze 1962: if (*ep != '\0')
1963: ++ep;
1.177 schwarze 1964: }
1.277 schwarze 1965: return rr ? ROFF_CONT : ROFF_IGN;
1.82 kristaps 1966: }
1967:
1968: static enum rofferr
1969: roff_cond_text(ROFF_ARGS)
1.78 kristaps 1970: {
1.140 kristaps 1971: char *ep;
1.198 schwarze 1972: int rr;
1.82 kristaps 1973:
1974: rr = r->last->rule;
1.140 kristaps 1975: roffnode_cleanscope(r);
1.82 kristaps 1976:
1.238 schwarze 1977: ep = buf->buf + pos;
1978: while ((ep = strchr(ep, '\\')) != NULL) {
1979: if (*(++ep) == '}') {
1.197 schwarze 1980: *ep = '&';
1.238 schwarze 1981: roff_ccond(r, ln, ep - buf->buf - 1);
1.197 schwarze 1982: }
1.247 schwarze 1983: if (*ep != '\0')
1984: ++ep;
1.78 kristaps 1985: }
1.277 schwarze 1986: return rr ? ROFF_CONT : ROFF_IGN;
1.74 kristaps 1987: }
1988:
1.266 schwarze 1989: /* --- handling of numeric and conditional expressions -------------------- */
1990:
1.204 schwarze 1991: /*
1992: * Parse a single signed integer number. Stop at the first non-digit.
1993: * If there is at least one digit, return success and advance the
1994: * parse point, else return failure and let the parse point unchanged.
1995: * Ignore overflows, treat them just like the C language.
1996: */
1.184 schwarze 1997: static int
1.261 schwarze 1998: roff_getnum(const char *v, int *pos, int *res, int flags)
1.184 schwarze 1999: {
1.261 schwarze 2000: int myres, scaled, n, p;
1.206 schwarze 2001:
2002: if (NULL == res)
2003: res = &myres;
1.184 schwarze 2004:
2005: p = *pos;
2006: n = v[p] == '-';
1.261 schwarze 2007: if (n || v[p] == '+')
1.184 schwarze 2008: p++;
2009:
1.261 schwarze 2010: if (flags & ROFFNUM_WHITE)
2011: while (isspace((unsigned char)v[p]))
2012: p++;
2013:
1.184 schwarze 2014: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.204 schwarze 2015: *res = 10 * *res + v[p] - '0';
1.184 schwarze 2016: if (p == *pos + n)
2017: return 0;
2018:
2019: if (n)
2020: *res = -*res;
2021:
1.254 schwarze 2022: /* Each number may be followed by one optional scaling unit. */
2023:
2024: switch (v[p]) {
2025: case 'f':
1.261 schwarze 2026: scaled = *res * 65536;
1.254 schwarze 2027: break;
2028: case 'i':
1.261 schwarze 2029: scaled = *res * 240;
1.254 schwarze 2030: break;
2031: case 'c':
1.261 schwarze 2032: scaled = *res * 240 / 2.54;
1.254 schwarze 2033: break;
2034: case 'v':
2035: case 'P':
1.261 schwarze 2036: scaled = *res * 40;
1.254 schwarze 2037: break;
2038: case 'm':
2039: case 'n':
1.261 schwarze 2040: scaled = *res * 24;
1.254 schwarze 2041: break;
2042: case 'p':
1.261 schwarze 2043: scaled = *res * 10 / 3;
1.254 schwarze 2044: break;
2045: case 'u':
1.261 schwarze 2046: scaled = *res;
1.254 schwarze 2047: break;
2048: case 'M':
1.261 schwarze 2049: scaled = *res * 6 / 25;
1.254 schwarze 2050: break;
2051: default:
1.261 schwarze 2052: scaled = *res;
1.254 schwarze 2053: p--;
2054: break;
2055: }
1.261 schwarze 2056: if (flags & ROFFNUM_SCALE)
2057: *res = scaled;
1.254 schwarze 2058:
2059: *pos = p + 1;
1.277 schwarze 2060: return 1;
1.184 schwarze 2061: }
2062:
1.198 schwarze 2063: /*
2064: * Evaluate a string comparison condition.
2065: * The first character is the delimiter.
2066: * Succeed if the string up to its second occurrence
2067: * matches the string up to its third occurence.
2068: * Advance the cursor after the third occurrence
2069: * or lacking that, to the end of the line.
2070: */
2071: static int
2072: roff_evalstrcond(const char *v, int *pos)
2073: {
2074: const char *s1, *s2, *s3;
2075: int match;
2076:
2077: match = 0;
2078: s1 = v + *pos; /* initial delimiter */
2079: s2 = s1 + 1; /* for scanning the first string */
2080: s3 = strchr(s2, *s1); /* for scanning the second string */
2081:
2082: if (NULL == s3) /* found no middle delimiter */
2083: goto out;
2084:
2085: while ('\0' != *++s3) {
2086: if (*s2 != *s3) { /* mismatch */
2087: s3 = strchr(s3, *s1);
2088: break;
2089: }
2090: if (*s3 == *s1) { /* found the final delimiter */
2091: match = 1;
2092: break;
2093: }
2094: s2++;
2095: }
2096:
2097: out:
2098: if (NULL == s3)
2099: s3 = strchr(s2, '\0');
1.242 schwarze 2100: else if (*s3 != '\0')
1.198 schwarze 2101: s3++;
2102: *pos = s3 - v;
1.277 schwarze 2103: return match;
1.198 schwarze 2104: }
2105:
1.204 schwarze 2106: /*
2107: * Evaluate an optionally negated single character, numerical,
2108: * or string condition.
2109: */
1.198 schwarze 2110: static int
1.271 schwarze 2111: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.88 kristaps 2112: {
1.271 schwarze 2113: char *cp, *name;
2114: size_t sz;
1.241 schwarze 2115: int number, savepos, wanttrue;
1.88 kristaps 2116:
1.198 schwarze 2117: if ('!' == v[*pos]) {
2118: wanttrue = 0;
2119: (*pos)++;
2120: } else
2121: wanttrue = 1;
2122:
1.88 kristaps 2123: switch (v[*pos]) {
1.240 schwarze 2124: case '\0':
1.277 schwarze 2125: return 0;
1.207 schwarze 2126: case 'n':
2127: case 'o':
1.88 kristaps 2128: (*pos)++;
1.277 schwarze 2129: return wanttrue;
1.207 schwarze 2130: case 'c':
2131: case 'd':
2132: case 'e':
2133: case 't':
1.239 schwarze 2134: case 'v':
1.88 kristaps 2135: (*pos)++;
1.277 schwarze 2136: return !wanttrue;
1.271 schwarze 2137: case 'r':
2138: cp = name = v + ++*pos;
2139: sz = roff_getname(r, &cp, ln, *pos);
2140: *pos = cp - v;
1.277 schwarze 2141: return (sz && roff_hasregn(r, name, sz)) == wanttrue;
1.88 kristaps 2142: default:
2143: break;
2144: }
2145:
1.241 schwarze 2146: savepos = *pos;
1.261 schwarze 2147: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.277 schwarze 2148: return (number > 0) == wanttrue;
1.241 schwarze 2149: else if (*pos == savepos)
1.277 schwarze 2150: return roff_evalstrcond(v, pos) == wanttrue;
1.204 schwarze 2151: else
1.277 schwarze 2152: return 0;
1.88 kristaps 2153: }
2154:
1.74 kristaps 2155: static enum rofferr
1.103 kristaps 2156: roff_line_ignore(ROFF_ARGS)
1.89 kristaps 2157: {
1.123 schwarze 2158:
1.277 schwarze 2159: return ROFF_IGN;
1.89 kristaps 2160: }
2161:
1.104 kristaps 2162: static enum rofferr
1.251 schwarze 2163: roff_insec(ROFF_ARGS)
2164: {
2165:
2166: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
2167: ln, ppos, roffs[tok].name);
1.277 schwarze 2168: return ROFF_IGN;
1.251 schwarze 2169: }
2170:
2171: static enum rofferr
2172: roff_unsupp(ROFF_ARGS)
2173: {
2174:
2175: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
2176: ln, ppos, roffs[tok].name);
1.277 schwarze 2177: return ROFF_IGN;
1.251 schwarze 2178: }
2179:
2180: static enum rofferr
1.82 kristaps 2181: roff_cond(ROFF_ARGS)
1.74 kristaps 2182: {
1.173 schwarze 2183:
2184: roffnode_push(r, tok, NULL, ln, ppos);
1.74 kristaps 2185:
1.207 schwarze 2186: /*
1.134 kristaps 2187: * An `.el' has no conditional body: it will consume the value
2188: * of the current rstack entry set in prior `ie' calls or
1.207 schwarze 2189: * defaults to DENY.
1.134 kristaps 2190: *
2191: * If we're not an `el', however, then evaluate the conditional.
2192: */
1.133 kristaps 2193:
1.238 schwarze 2194: r->last->rule = tok == ROFF_el ?
1.207 schwarze 2195: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.238 schwarze 2196: roff_evalcond(r, ln, buf->buf, &pos);
1.77 kristaps 2197:
1.134 kristaps 2198: /*
2199: * An if-else will put the NEGATION of the current evaluated
2200: * conditional into the stack of rules.
2201: */
2202:
1.238 schwarze 2203: if (tok == ROFF_ie) {
1.223 schwarze 2204: if (r->rstackpos + 1 == r->rstacksz) {
2205: r->rstacksz += 16;
2206: r->rstack = mandoc_reallocarray(r->rstack,
2207: r->rstacksz, sizeof(int));
1.134 kristaps 2208: }
1.198 schwarze 2209: r->rstack[++r->rstackpos] = !r->last->rule;
1.82 kristaps 2210: }
1.88 kristaps 2211:
2212: /* If the parent has false as its rule, then so do we. */
2213:
1.198 schwarze 2214: if (r->last->parent && !r->last->parent->rule)
2215: r->last->rule = 0;
1.88 kristaps 2216:
2217: /*
1.173 schwarze 2218: * Determine scope.
2219: * If there is nothing on the line after the conditional,
2220: * not even whitespace, use next-line scope.
1.88 kristaps 2221: */
1.74 kristaps 2222:
1.238 schwarze 2223: if (buf->buf[pos] == '\0') {
1.173 schwarze 2224: r->last->endspan = 2;
2225: goto out;
2226: }
2227:
1.238 schwarze 2228: while (buf->buf[pos] == ' ')
1.173 schwarze 2229: pos++;
2230:
2231: /* An opening brace requests multiline scope. */
1.75 kristaps 2232:
1.238 schwarze 2233: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.75 kristaps 2234: r->last->endspan = -1;
2235: pos += 2;
1.272 schwarze 2236: while (buf->buf[pos] == ' ')
2237: pos++;
1.173 schwarze 2238: goto out;
1.207 schwarze 2239: }
1.74 kristaps 2240:
1.77 kristaps 2241: /*
1.173 schwarze 2242: * Anything else following the conditional causes
2243: * single-line scope. Warn if the scope contains
2244: * nothing but trailing whitespace.
1.77 kristaps 2245: */
2246:
1.238 schwarze 2247: if (buf->buf[pos] == '\0')
1.216 schwarze 2248: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
2249: ln, ppos, roffs[tok].name);
1.77 kristaps 2250:
1.173 schwarze 2251: r->last->endspan = 1;
1.74 kristaps 2252:
1.173 schwarze 2253: out:
1.75 kristaps 2254: *offs = pos;
1.277 schwarze 2255: return ROFF_RERUN;
1.83 schwarze 2256: }
2257:
2258: static enum rofferr
1.92 schwarze 2259: roff_ds(ROFF_ARGS)
2260: {
1.212 schwarze 2261: char *string;
2262: const char *name;
2263: size_t namesz;
1.96 kristaps 2264:
1.251 schwarze 2265: /* Ignore groff compatibility mode for now. */
2266:
2267: if (tok == ROFF_ds1)
2268: tok = ROFF_ds;
2269: else if (tok == ROFF_as1)
2270: tok = ROFF_as;
2271:
1.96 kristaps 2272: /*
1.212 schwarze 2273: * The first word is the name of the string.
2274: * If it is empty or terminated by an escape sequence,
2275: * abort the `ds' request without defining anything.
1.96 kristaps 2276: */
1.92 schwarze 2277:
1.238 schwarze 2278: name = string = buf->buf + pos;
2279: if (*name == '\0')
1.277 schwarze 2280: return ROFF_IGN;
1.92 schwarze 2281:
1.212 schwarze 2282: namesz = roff_getname(r, &string, ln, pos);
1.238 schwarze 2283: if (name[namesz] == '\\')
1.277 schwarze 2284: return ROFF_IGN;
1.212 schwarze 2285:
2286: /* Read past the initial double-quote, if any. */
1.238 schwarze 2287: if (*string == '"')
1.92 schwarze 2288: string++;
2289:
1.96 kristaps 2290: /* The rest is the value. */
1.212 schwarze 2291: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2292: ROFF_as == tok);
1.277 schwarze 2293: return ROFF_IGN;
1.92 schwarze 2294: }
2295:
1.204 schwarze 2296: /*
2297: * Parse a single operator, one or two characters long.
2298: * If the operator is recognized, return success and advance the
2299: * parse point, else return failure and let the parse point unchanged.
2300: */
2301: static int
2302: roff_getop(const char *v, int *pos, char *res)
2303: {
2304:
2305: *res = v[*pos];
2306:
2307: switch (*res) {
1.207 schwarze 2308: case '+':
2309: case '-':
2310: case '*':
2311: case '/':
2312: case '%':
2313: case '&':
2314: case ':':
1.204 schwarze 2315: break;
2316: case '<':
2317: switch (v[*pos + 1]) {
1.207 schwarze 2318: case '=':
1.204 schwarze 2319: *res = 'l';
2320: (*pos)++;
2321: break;
1.207 schwarze 2322: case '>':
1.204 schwarze 2323: *res = '!';
2324: (*pos)++;
2325: break;
1.207 schwarze 2326: case '?':
1.204 schwarze 2327: *res = 'i';
2328: (*pos)++;
2329: break;
2330: default:
2331: break;
2332: }
2333: break;
2334: case '>':
2335: switch (v[*pos + 1]) {
1.207 schwarze 2336: case '=':
1.204 schwarze 2337: *res = 'g';
2338: (*pos)++;
2339: break;
1.207 schwarze 2340: case '?':
1.204 schwarze 2341: *res = 'a';
2342: (*pos)++;
2343: break;
2344: default:
2345: break;
2346: }
2347: break;
2348: case '=':
2349: if ('=' == v[*pos + 1])
2350: (*pos)++;
2351: break;
2352: default:
1.277 schwarze 2353: return 0;
1.204 schwarze 2354: }
2355: (*pos)++;
2356:
1.277 schwarze 2357: return *res;
1.204 schwarze 2358: }
2359:
2360: /*
2361: * Evaluate either a parenthesized numeric expression
2362: * or a single signed integer number.
2363: */
2364: static int
1.235 schwarze 2365: roff_evalpar(struct roff *r, int ln,
1.261 schwarze 2366: const char *v, int *pos, int *res, int flags)
1.204 schwarze 2367: {
2368:
2369: if ('(' != v[*pos])
1.277 schwarze 2370: return roff_getnum(v, pos, res, flags);
1.204 schwarze 2371:
2372: (*pos)++;
1.261 schwarze 2373: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.277 schwarze 2374: return 0;
1.204 schwarze 2375:
1.206 schwarze 2376: /*
2377: * Omission of the closing parenthesis
2378: * is an error in validation mode,
2379: * but ignored in evaluation mode.
2380: */
2381:
1.204 schwarze 2382: if (')' == v[*pos])
2383: (*pos)++;
1.206 schwarze 2384: else if (NULL == res)
1.277 schwarze 2385: return 0;
1.204 schwarze 2386:
1.277 schwarze 2387: return 1;
1.204 schwarze 2388: }
2389:
2390: /*
2391: * Evaluate a complete numeric expression.
2392: * Proceed left to right, there is no concept of precedence.
2393: */
2394: static int
1.235 schwarze 2395: roff_evalnum(struct roff *r, int ln, const char *v,
1.261 schwarze 2396: int *pos, int *res, int flags)
1.204 schwarze 2397: {
2398: int mypos, operand2;
2399: char operator;
2400:
2401: if (NULL == pos) {
2402: mypos = 0;
2403: pos = &mypos;
2404: }
2405:
1.261 schwarze 2406: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2407: while (isspace((unsigned char)v[*pos]))
2408: (*pos)++;
2409:
1.261 schwarze 2410: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.277 schwarze 2411: return 0;
1.204 schwarze 2412:
2413: while (1) {
1.261 schwarze 2414: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2415: while (isspace((unsigned char)v[*pos]))
2416: (*pos)++;
2417:
2418: if ( ! roff_getop(v, pos, &operator))
2419: break;
2420:
1.261 schwarze 2421: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2422: while (isspace((unsigned char)v[*pos]))
2423: (*pos)++;
2424:
1.261 schwarze 2425: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.277 schwarze 2426: return 0;
1.204 schwarze 2427:
1.261 schwarze 2428: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2429: while (isspace((unsigned char)v[*pos]))
2430: (*pos)++;
1.206 schwarze 2431:
2432: if (NULL == res)
2433: continue;
1.204 schwarze 2434:
2435: switch (operator) {
1.207 schwarze 2436: case '+':
1.204 schwarze 2437: *res += operand2;
2438: break;
1.207 schwarze 2439: case '-':
1.204 schwarze 2440: *res -= operand2;
2441: break;
1.207 schwarze 2442: case '*':
1.204 schwarze 2443: *res *= operand2;
2444: break;
1.207 schwarze 2445: case '/':
1.244 schwarze 2446: if (operand2 == 0) {
1.235 schwarze 2447: mandoc_msg(MANDOCERR_DIVZERO,
1.234 kristaps 2448: r->parse, ln, *pos, v);
2449: *res = 0;
2450: break;
2451: }
1.204 schwarze 2452: *res /= operand2;
2453: break;
1.207 schwarze 2454: case '%':
1.244 schwarze 2455: if (operand2 == 0) {
2456: mandoc_msg(MANDOCERR_DIVZERO,
2457: r->parse, ln, *pos, v);
2458: *res = 0;
2459: break;
2460: }
1.204 schwarze 2461: *res %= operand2;
2462: break;
1.207 schwarze 2463: case '<':
1.204 schwarze 2464: *res = *res < operand2;
2465: break;
1.207 schwarze 2466: case '>':
1.204 schwarze 2467: *res = *res > operand2;
2468: break;
1.207 schwarze 2469: case 'l':
1.204 schwarze 2470: *res = *res <= operand2;
2471: break;
1.207 schwarze 2472: case 'g':
1.204 schwarze 2473: *res = *res >= operand2;
2474: break;
1.207 schwarze 2475: case '=':
1.204 schwarze 2476: *res = *res == operand2;
2477: break;
1.207 schwarze 2478: case '!':
1.204 schwarze 2479: *res = *res != operand2;
2480: break;
1.207 schwarze 2481: case '&':
1.204 schwarze 2482: *res = *res && operand2;
2483: break;
1.207 schwarze 2484: case ':':
1.204 schwarze 2485: *res = *res || operand2;
2486: break;
1.207 schwarze 2487: case 'i':
1.204 schwarze 2488: if (operand2 < *res)
2489: *res = operand2;
2490: break;
1.207 schwarze 2491: case 'a':
1.204 schwarze 2492: if (operand2 > *res)
2493: *res = operand2;
2494: break;
2495: default:
2496: abort();
2497: }
2498: }
1.277 schwarze 2499: return 1;
1.204 schwarze 2500: }
2501:
1.266 schwarze 2502: /* --- register management ------------------------------------------------ */
2503:
1.180 schwarze 2504: void
1.187 schwarze 2505: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.147 kristaps 2506: {
1.180 schwarze 2507: struct roffreg *reg;
2508:
2509: /* Search for an existing register with the same name. */
2510: reg = r->regtab;
2511:
2512: while (reg && strcmp(name, reg->key.p))
2513: reg = reg->next;
1.147 kristaps 2514:
1.180 schwarze 2515: if (NULL == reg) {
2516: /* Create a new register. */
2517: reg = mandoc_malloc(sizeof(struct roffreg));
2518: reg->key.p = mandoc_strdup(name);
2519: reg->key.sz = strlen(name);
1.187 schwarze 2520: reg->val = 0;
1.180 schwarze 2521: reg->next = r->regtab;
2522: r->regtab = reg;
2523: }
2524:
1.187 schwarze 2525: if ('+' == sign)
2526: reg->val += val;
2527: else if ('-' == sign)
2528: reg->val -= val;
2529: else
2530: reg->val = val;
1.147 kristaps 2531: }
2532:
1.192 schwarze 2533: /*
2534: * Handle some predefined read-only number registers.
2535: * For now, return -1 if the requested register is not predefined;
2536: * in case a predefined read-only register having the value -1
2537: * were to turn up, another special value would have to be chosen.
2538: */
2539: static int
1.273 schwarze 2540: roff_getregro(const struct roff *r, const char *name)
1.192 schwarze 2541: {
2542:
2543: switch (*name) {
1.273 schwarze 2544: case '$': /* Number of arguments of the last macro evaluated. */
1.277 schwarze 2545: return r->argc;
1.207 schwarze 2546: case 'A': /* ASCII approximation mode is always off. */
1.277 schwarze 2547: return 0;
1.207 schwarze 2548: case 'g': /* Groff compatibility mode is always on. */
1.277 schwarze 2549: return 1;
1.207 schwarze 2550: case 'H': /* Fixed horizontal resolution. */
1.277 schwarze 2551: return 24;
1.207 schwarze 2552: case 'j': /* Always adjust left margin only. */
1.277 schwarze 2553: return 0;
1.207 schwarze 2554: case 'T': /* Some output device is always defined. */
1.277 schwarze 2555: return 1;
1.207 schwarze 2556: case 'V': /* Fixed vertical resolution. */
1.277 schwarze 2557: return 40;
1.192 schwarze 2558: default:
1.277 schwarze 2559: return -1;
1.192 schwarze 2560: }
2561: }
2562:
1.181 schwarze 2563: int
1.180 schwarze 2564: roff_getreg(const struct roff *r, const char *name)
1.147 kristaps 2565: {
1.180 schwarze 2566: struct roffreg *reg;
1.192 schwarze 2567: int val;
2568:
2569: if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) {
1.273 schwarze 2570: val = roff_getregro(r, name + 1);
1.192 schwarze 2571: if (-1 != val)
1.277 schwarze 2572: return val;
1.192 schwarze 2573: }
1.180 schwarze 2574:
2575: for (reg = r->regtab; reg; reg = reg->next)
2576: if (0 == strcmp(name, reg->key.p))
1.277 schwarze 2577: return reg->val;
1.181 schwarze 2578:
1.277 schwarze 2579: return 0;
1.181 schwarze 2580: }
2581:
2582: static int
2583: roff_getregn(const struct roff *r, const char *name, size_t len)
2584: {
2585: struct roffreg *reg;
1.192 schwarze 2586: int val;
2587:
2588: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2589: val = roff_getregro(r, name + 1);
1.192 schwarze 2590: if (-1 != val)
1.277 schwarze 2591: return val;
1.192 schwarze 2592: }
1.181 schwarze 2593:
2594: for (reg = r->regtab; reg; reg = reg->next)
2595: if (len == reg->key.sz &&
2596: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2597: return reg->val;
1.271 schwarze 2598:
1.277 schwarze 2599: return 0;
1.271 schwarze 2600: }
2601:
2602: static int
2603: roff_hasregn(const struct roff *r, const char *name, size_t len)
2604: {
2605: struct roffreg *reg;
2606: int val;
2607:
2608: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2609: val = roff_getregro(r, name + 1);
1.271 schwarze 2610: if (-1 != val)
1.277 schwarze 2611: return 1;
1.271 schwarze 2612: }
2613:
2614: for (reg = r->regtab; reg; reg = reg->next)
2615: if (len == reg->key.sz &&
2616: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2617: return 1;
1.147 kristaps 2618:
1.277 schwarze 2619: return 0;
1.147 kristaps 2620: }
2621:
1.180 schwarze 2622: static void
2623: roff_freereg(struct roffreg *reg)
1.147 kristaps 2624: {
1.180 schwarze 2625: struct roffreg *old_reg;
1.147 kristaps 2626:
1.180 schwarze 2627: while (NULL != reg) {
2628: free(reg->key.p);
2629: old_reg = reg;
2630: reg = reg->next;
2631: free(old_reg);
2632: }
1.147 kristaps 2633: }
1.92 schwarze 2634:
2635: static enum rofferr
1.89 kristaps 2636: roff_nr(ROFF_ARGS)
1.83 schwarze 2637: {
1.212 schwarze 2638: char *key, *val;
2639: size_t keysz;
1.138 kristaps 2640: int iv;
1.187 schwarze 2641: char sign;
1.89 kristaps 2642:
1.238 schwarze 2643: key = val = buf->buf + pos;
2644: if (*key == '\0')
1.277 schwarze 2645: return ROFF_IGN;
1.212 schwarze 2646:
2647: keysz = roff_getname(r, &val, ln, pos);
1.238 schwarze 2648: if (key[keysz] == '\\')
1.277 schwarze 2649: return ROFF_IGN;
1.212 schwarze 2650: key[keysz] = '\0';
1.89 kristaps 2651:
1.187 schwarze 2652: sign = *val;
1.238 schwarze 2653: if (sign == '+' || sign == '-')
1.187 schwarze 2654: val++;
2655:
1.261 schwarze 2656: if (roff_evalnum(r, ln, val, NULL, &iv, ROFFNUM_SCALE))
1.204 schwarze 2657: roff_setreg(r, key, iv, sign);
1.109 kristaps 2658:
1.277 schwarze 2659: return ROFF_IGN;
1.203 schwarze 2660: }
2661:
2662: static enum rofferr
2663: roff_rr(ROFF_ARGS)
2664: {
2665: struct roffreg *reg, **prev;
1.212 schwarze 2666: char *name, *cp;
2667: size_t namesz;
1.203 schwarze 2668:
1.238 schwarze 2669: name = cp = buf->buf + pos;
2670: if (*name == '\0')
1.277 schwarze 2671: return ROFF_IGN;
1.212 schwarze 2672: namesz = roff_getname(r, &cp, ln, pos);
2673: name[namesz] = '\0';
1.203 schwarze 2674:
2675: prev = &r->regtab;
2676: while (1) {
2677: reg = *prev;
1.238 schwarze 2678: if (reg == NULL || !strcmp(name, reg->key.p))
1.203 schwarze 2679: break;
2680: prev = ®->next;
2681: }
1.238 schwarze 2682: if (reg != NULL) {
1.203 schwarze 2683: *prev = reg->next;
2684: free(reg->key.p);
2685: free(reg);
2686: }
1.277 schwarze 2687: return ROFF_IGN;
1.122 schwarze 2688: }
2689:
1.266 schwarze 2690: /* --- handler functions for roff requests -------------------------------- */
2691:
1.122 schwarze 2692: static enum rofferr
2693: roff_rm(ROFF_ARGS)
2694: {
2695: const char *name;
2696: char *cp;
1.212 schwarze 2697: size_t namesz;
1.122 schwarze 2698:
1.238 schwarze 2699: cp = buf->buf + pos;
2700: while (*cp != '\0') {
1.212 schwarze 2701: name = cp;
1.238 schwarze 2702: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.212 schwarze 2703: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.238 schwarze 2704: if (name[namesz] == '\\')
1.212 schwarze 2705: break;
1.122 schwarze 2706: }
1.277 schwarze 2707: return ROFF_IGN;
1.178 schwarze 2708: }
2709:
2710: static enum rofferr
2711: roff_it(ROFF_ARGS)
2712: {
2713: int iv;
2714:
2715: /* Parse the number of lines. */
1.261 schwarze 2716:
2717: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.222 schwarze 2718: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.238 schwarze 2719: ln, ppos, buf->buf + 1);
1.277 schwarze 2720: return ROFF_IGN;
1.178 schwarze 2721: }
2722:
1.262 schwarze 2723: while (isspace((unsigned char)buf->buf[pos]))
2724: pos++;
2725:
2726: /*
2727: * Arm the input line trap.
2728: * Special-casing "an-trap" is an ugly workaround to cope
2729: * with DocBook stupidly fiddling with man(7) internals.
2730: */
1.261 schwarze 2731:
1.178 schwarze 2732: roffit_lines = iv;
1.262 schwarze 2733: roffit_macro = mandoc_strdup(iv != 1 ||
2734: strcmp(buf->buf + pos, "an-trap") ?
2735: buf->buf + pos : "br");
1.277 schwarze 2736: return ROFF_IGN;
1.175 schwarze 2737: }
2738:
2739: static enum rofferr
2740: roff_Dd(ROFF_ARGS)
2741: {
2742: const char *const *cp;
2743:
1.227 schwarze 2744: if ((r->options & (MPARSE_MDOC | MPARSE_QUICK)) == 0)
1.175 schwarze 2745: for (cp = __mdoc_reserved; *cp; cp++)
2746: roff_setstr(r, *cp, NULL, 0);
2747:
1.227 schwarze 2748: if (r->format == 0)
2749: r->format = MPARSE_MDOC;
2750:
1.277 schwarze 2751: return ROFF_CONT;
1.175 schwarze 2752: }
2753:
2754: static enum rofferr
2755: roff_TH(ROFF_ARGS)
2756: {
2757: const char *const *cp;
2758:
1.227 schwarze 2759: if ((r->options & MPARSE_QUICK) == 0)
1.175 schwarze 2760: for (cp = __man_reserved; *cp; cp++)
2761: roff_setstr(r, *cp, NULL, 0);
2762:
1.227 schwarze 2763: if (r->format == 0)
2764: r->format = MPARSE_MAN;
2765:
1.277 schwarze 2766: return ROFF_CONT;
1.109 kristaps 2767: }
2768:
2769: static enum rofferr
2770: roff_TE(ROFF_ARGS)
2771: {
2772:
2773: if (NULL == r->tbl)
1.221 schwarze 2774: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2775: ln, ppos, "TE");
1.258 schwarze 2776: else if ( ! tbl_end(&r->tbl)) {
2777: free(buf->buf);
2778: buf->buf = mandoc_strdup(".sp");
2779: buf->sz = 4;
1.277 schwarze 2780: return ROFF_REPARSE;
1.258 schwarze 2781: }
1.277 schwarze 2782: return ROFF_IGN;
1.112 kristaps 2783: }
2784:
2785: static enum rofferr
2786: roff_T_(ROFF_ARGS)
2787: {
2788:
2789: if (NULL == r->tbl)
1.221 schwarze 2790: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2791: ln, ppos, "T&");
1.112 kristaps 2792: else
1.116 kristaps 2793: tbl_restart(ppos, ln, r->tbl);
1.112 kristaps 2794:
1.277 schwarze 2795: return ROFF_IGN;
1.109 kristaps 2796: }
2797:
1.230 schwarze 2798: /*
2799: * Handle in-line equation delimiters.
2800: */
2801: static enum rofferr
1.238 schwarze 2802: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.151 kristaps 2803: {
1.233 schwarze 2804: char *cp1, *cp2;
2805: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.151 kristaps 2806:
1.230 schwarze 2807: /*
2808: * Outside equations, look for an opening delimiter.
2809: * If we are inside an equation, we already know it is
2810: * in-line, or this function wouldn't have been called;
2811: * so look for a closing delimiter.
2812: */
2813:
1.238 schwarze 2814: cp1 = buf->buf + pos;
1.230 schwarze 2815: cp2 = strchr(cp1, r->eqn == NULL ?
2816: r->last_eqn->odelim : r->last_eqn->cdelim);
2817: if (cp2 == NULL)
1.277 schwarze 2818: return ROFF_CONT;
1.230 schwarze 2819:
1.233 schwarze 2820: *cp2++ = '\0';
2821: bef_pr = bef_nl = aft_nl = aft_pr = "";
2822:
2823: /* Handle preceding text, protecting whitespace. */
2824:
1.238 schwarze 2825: if (*buf->buf != '\0') {
1.233 schwarze 2826: if (r->eqn == NULL)
2827: bef_pr = "\\&";
2828: bef_nl = "\n";
2829: }
2830:
2831: /*
2832: * Prepare replacing the delimiter with an equation macro
2833: * and drop leading white space from the equation.
2834: */
1.230 schwarze 2835:
1.233 schwarze 2836: if (r->eqn == NULL) {
2837: while (*cp2 == ' ')
2838: cp2++;
2839: mac = ".EQ";
2840: } else
2841: mac = ".EN";
2842:
2843: /* Handle following text, protecting whitespace. */
2844:
2845: if (*cp2 != '\0') {
2846: aft_nl = "\n";
2847: if (r->eqn != NULL)
2848: aft_pr = "\\&";
2849: }
2850:
2851: /* Do the actual replacement. */
2852:
1.238 schwarze 2853: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.233 schwarze 2854: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.238 schwarze 2855: free(buf->buf);
2856: buf->buf = cp1;
1.230 schwarze 2857:
2858: /* Toggle the in-line state of the eqn subsystem. */
2859:
2860: r->eqn_inline = r->eqn == NULL;
1.277 schwarze 2861: return ROFF_REPARSE;
1.151 kristaps 2862: }
2863:
1.235 schwarze 2864: static enum rofferr
2865: roff_EQ(ROFF_ARGS)
1.125 kristaps 2866: {
1.151 kristaps 2867: struct eqn_node *e;
1.125 kristaps 2868:
1.238 schwarze 2869: assert(r->eqn == NULL);
1.235 schwarze 2870: e = eqn_alloc(ppos, ln, r->parse);
1.125 kristaps 2871:
1.230 schwarze 2872: if (r->last_eqn) {
1.125 kristaps 2873: r->last_eqn->next = e;
1.230 schwarze 2874: e->delim = r->last_eqn->delim;
2875: e->odelim = r->last_eqn->odelim;
2876: e->cdelim = r->last_eqn->cdelim;
2877: } else
1.125 kristaps 2878: r->first_eqn = r->last_eqn = e;
2879:
2880: r->eqn = r->last_eqn = e;
1.151 kristaps 2881:
1.238 schwarze 2882: if (buf->buf[pos] != '\0')
1.235 schwarze 2883: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 2884: ".EQ %s", buf->buf + pos);
1.151 kristaps 2885:
1.277 schwarze 2886: return ROFF_IGN;
1.125 kristaps 2887: }
2888:
2889: static enum rofferr
2890: roff_EN(ROFF_ARGS)
2891: {
2892:
1.221 schwarze 2893: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
1.277 schwarze 2894: return ROFF_IGN;
1.125 kristaps 2895: }
2896:
2897: static enum rofferr
1.109 kristaps 2898: roff_TS(ROFF_ARGS)
2899: {
1.176 schwarze 2900: struct tbl_node *tbl;
1.89 kristaps 2901:
1.115 kristaps 2902: if (r->tbl) {
1.221 schwarze 2903: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
2904: ln, ppos, "TS breaks TS");
1.151 kristaps 2905: tbl_end(&r->tbl);
1.115 kristaps 2906: }
1.83 schwarze 2907:
1.176 schwarze 2908: tbl = tbl_alloc(ppos, ln, r->parse);
1.113 kristaps 2909:
2910: if (r->last_tbl)
1.176 schwarze 2911: r->last_tbl->next = tbl;
1.113 kristaps 2912: else
1.176 schwarze 2913: r->first_tbl = r->last_tbl = tbl;
1.113 kristaps 2914:
1.176 schwarze 2915: r->tbl = r->last_tbl = tbl;
1.277 schwarze 2916: return ROFF_IGN;
1.251 schwarze 2917: }
2918:
2919: static enum rofferr
2920: roff_brp(ROFF_ARGS)
2921: {
2922:
2923: buf->buf[pos - 1] = '\0';
1.277 schwarze 2924: return ROFF_CONT;
1.92 schwarze 2925: }
2926:
1.105 kristaps 2927: static enum rofferr
1.174 kristaps 2928: roff_cc(ROFF_ARGS)
2929: {
2930: const char *p;
2931:
1.238 schwarze 2932: p = buf->buf + pos;
1.174 kristaps 2933:
1.238 schwarze 2934: if (*p == '\0' || (r->control = *p++) == '.')
1.174 kristaps 2935: r->control = 0;
2936:
1.238 schwarze 2937: if (*p != '\0')
1.260 schwarze 2938: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
2939: ln, p - buf->buf, "cc ... %s", p);
1.174 kristaps 2940:
1.277 schwarze 2941: return ROFF_IGN;
1.174 kristaps 2942: }
2943:
2944: static enum rofferr
1.164 kristaps 2945: roff_tr(ROFF_ARGS)
2946: {
2947: const char *p, *first, *second;
2948: size_t fsz, ssz;
2949: enum mandoc_esc esc;
2950:
1.238 schwarze 2951: p = buf->buf + pos;
1.164 kristaps 2952:
1.238 schwarze 2953: if (*p == '\0') {
1.260 schwarze 2954: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.277 schwarze 2955: return ROFF_IGN;
1.164 kristaps 2956: }
2957:
1.238 schwarze 2958: while (*p != '\0') {
1.164 kristaps 2959: fsz = ssz = 1;
2960:
2961: first = p++;
1.238 schwarze 2962: if (*first == '\\') {
1.164 kristaps 2963: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 2964: if (esc == ESCAPE_ERROR) {
1.219 schwarze 2965: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 2966: ln, (int)(p - buf->buf), first);
1.277 schwarze 2967: return ROFF_IGN;
1.164 kristaps 2968: }
2969: fsz = (size_t)(p - first);
2970: }
2971:
2972: second = p++;
1.238 schwarze 2973: if (*second == '\\') {
1.164 kristaps 2974: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 2975: if (esc == ESCAPE_ERROR) {
1.219 schwarze 2976: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 2977: ln, (int)(p - buf->buf), second);
1.277 schwarze 2978: return ROFF_IGN;
1.164 kristaps 2979: }
2980: ssz = (size_t)(p - second);
1.238 schwarze 2981: } else if (*second == '\0') {
1.260 schwarze 2982: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
2983: ln, first - buf->buf, "tr %s", first);
1.164 kristaps 2984: second = " ";
1.165 kristaps 2985: p--;
1.164 kristaps 2986: }
2987:
1.167 kristaps 2988: if (fsz > 1) {
1.207 schwarze 2989: roff_setstrn(&r->xmbtab, first, fsz,
2990: second, ssz, 0);
1.167 kristaps 2991: continue;
2992: }
2993:
1.238 schwarze 2994: if (r->xtab == NULL)
1.207 schwarze 2995: r->xtab = mandoc_calloc(128,
2996: sizeof(struct roffstr));
1.167 kristaps 2997:
2998: free(r->xtab[(int)*first].p);
2999: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3000: r->xtab[(int)*first].sz = ssz;
1.164 kristaps 3001: }
3002:
1.277 schwarze 3003: return ROFF_IGN;
1.164 kristaps 3004: }
3005:
3006: static enum rofferr
1.105 kristaps 3007: roff_so(ROFF_ARGS)
3008: {
1.249 schwarze 3009: char *name, *cp;
1.105 kristaps 3010:
1.238 schwarze 3011: name = buf->buf + pos;
1.224 schwarze 3012: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.105 kristaps 3013:
3014: /*
3015: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3016: * opening anything that's not in our cwd or anything beneath
3017: * it. Thus, explicitly disallow traversing up the file-system
3018: * or using absolute paths.
3019: */
3020:
1.238 schwarze 3021: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.210 schwarze 3022: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
3023: ".so %s", name);
1.249 schwarze 3024: buf->sz = mandoc_asprintf(&cp,
3025: ".sp\nSee the file %s.\n.sp", name) + 1;
3026: free(buf->buf);
3027: buf->buf = cp;
3028: *offs = 0;
1.277 schwarze 3029: return ROFF_REPARSE;
1.105 kristaps 3030: }
3031:
3032: *offs = pos;
1.277 schwarze 3033: return ROFF_SO;
1.105 kristaps 3034: }
1.92 schwarze 3035:
1.266 schwarze 3036: /* --- user defined strings and macros ------------------------------------ */
3037:
1.106 kristaps 3038: static enum rofferr
3039: roff_userdef(ROFF_ARGS)
1.99 kristaps 3040: {
1.263 schwarze 3041: const char *arg[9], *ap;
1.106 kristaps 3042: char *cp, *n1, *n2;
1.274 schwarze 3043: int i, ib, ie;
1.263 schwarze 3044: size_t asz, rsz;
1.106 kristaps 3045:
3046: /*
3047: * Collect pointers to macro argument strings
1.188 schwarze 3048: * and NUL-terminate them.
1.106 kristaps 3049: */
1.263 schwarze 3050:
1.273 schwarze 3051: r->argc = 0;
1.238 schwarze 3052: cp = buf->buf + pos;
1.273 schwarze 3053: for (i = 0; i < 9; i++) {
3054: if (*cp == '\0')
3055: arg[i] = "";
3056: else {
3057: arg[i] = mandoc_getarg(r->parse, &cp, ln, &pos);
3058: r->argc = i + 1;
3059: }
3060: }
1.99 kristaps 3061:
1.106 kristaps 3062: /*
3063: * Expand macro arguments.
1.99 kristaps 3064: */
1.263 schwarze 3065:
3066: buf->sz = strlen(r->current_string) + 1;
3067: n1 = cp = mandoc_malloc(buf->sz);
3068: memcpy(n1, r->current_string, buf->sz);
3069: while (*cp != '\0') {
3070:
3071: /* Scan ahead for the next argument invocation. */
3072:
3073: if (*cp++ != '\\')
3074: continue;
3075: if (*cp++ != '$')
3076: continue;
1.274 schwarze 3077: if (*cp == '*') { /* \\$* inserts all arguments */
3078: ib = 0;
3079: ie = r->argc - 1;
3080: } else { /* \\$1 .. \\$9 insert one argument */
3081: ib = ie = *cp - '1';
3082: if (ib < 0 || ib > 8)
3083: continue;
3084: }
1.263 schwarze 3085: cp -= 2;
3086:
3087: /*
3088: * Determine the size of the expanded argument,
3089: * taking escaping of quotes into account.
3090: */
3091:
1.274 schwarze 3092: asz = ie > ib ? ie - ib : 0; /* for blanks */
3093: for (i = ib; i <= ie; i++) {
3094: for (ap = arg[i]; *ap != '\0'; ap++) {
3095: asz++;
3096: if (*ap == '"')
3097: asz += 3;
3098: }
1.263 schwarze 3099: }
3100: if (asz != 3) {
3101:
3102: /*
3103: * Determine the size of the rest of the
3104: * unexpanded macro, including the NUL.
3105: */
3106:
3107: rsz = buf->sz - (cp - n1) - 3;
3108:
3109: /*
3110: * When shrinking, move before
3111: * releasing the storage.
3112: */
3113:
3114: if (asz < 3)
3115: memmove(cp + asz, cp + 3, rsz);
3116:
3117: /*
3118: * Resize the storage for the macro
3119: * and readjust the parse pointer.
3120: */
3121:
3122: buf->sz += asz - 3;
3123: n2 = mandoc_realloc(n1, buf->sz);
3124: cp = n2 + (cp - n1);
3125: n1 = n2;
3126:
3127: /*
3128: * When growing, make room
3129: * for the expanded argument.
3130: */
3131:
3132: if (asz > 3)
3133: memmove(cp + asz, cp + 3, rsz);
3134: }
3135:
3136: /* Copy the expanded argument, escaping quotes. */
3137:
3138: n2 = cp;
1.274 schwarze 3139: for (i = ib; i <= ie; i++) {
3140: for (ap = arg[i]; *ap != '\0'; ap++) {
3141: if (*ap == '"') {
3142: memcpy(n2, "\\(dq", 4);
3143: n2 += 4;
3144: } else
3145: *n2++ = *ap;
3146: }
3147: if (i < ie)
3148: *n2++ = ' ';
1.106 kristaps 3149: }
1.99 kristaps 3150: }
3151:
1.106 kristaps 3152: /*
3153: * Replace the macro invocation
3154: * by the expanded macro.
3155: */
1.263 schwarze 3156:
1.238 schwarze 3157: free(buf->buf);
3158: buf->buf = n1;
1.248 schwarze 3159: *offs = 0;
1.106 kristaps 3160:
1.277 schwarze 3161: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
3162: ROFF_REPARSE : ROFF_APPEND;
1.99 kristaps 3163: }
1.121 schwarze 3164:
1.212 schwarze 3165: static size_t
1.121 schwarze 3166: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3167: {
3168: char *name, *cp;
1.212 schwarze 3169: size_t namesz;
1.121 schwarze 3170:
3171: name = *cpp;
3172: if ('\0' == *name)
1.277 schwarze 3173: return 0;
1.121 schwarze 3174:
1.212 schwarze 3175: /* Read until end of name and terminate it with NUL. */
3176: for (cp = name; 1; cp++) {
3177: if ('\0' == *cp || ' ' == *cp) {
3178: namesz = cp - name;
3179: break;
3180: }
1.121 schwarze 3181: if ('\\' != *cp)
3182: continue;
1.215 schwarze 3183: namesz = cp - name;
3184: if ('{' == cp[1] || '}' == cp[1])
3185: break;
1.121 schwarze 3186: cp++;
3187: if ('\\' == *cp)
3188: continue;
1.224 schwarze 3189: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3190: "%.*s", (int)(cp - name + 1), name);
1.212 schwarze 3191: mandoc_escape((const char **)&cp, NULL, NULL);
3192: break;
1.121 schwarze 3193: }
3194:
3195: /* Read past spaces. */
3196: while (' ' == *cp)
3197: cp++;
3198:
3199: *cpp = cp;
1.277 schwarze 3200: return namesz;
1.121 schwarze 3201: }
3202:
1.106 kristaps 3203: /*
3204: * Store *string into the user-defined string called *name.
3205: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.193 schwarze 3206: * append == 0: replace mode
3207: * append == 1: single-line append mode
3208: * append == 2: multiline append mode, append '\n' after each call
1.106 kristaps 3209: */
1.94 kristaps 3210: static void
1.106 kristaps 3211: roff_setstr(struct roff *r, const char *name, const char *string,
1.193 schwarze 3212: int append)
1.92 schwarze 3213: {
1.164 kristaps 3214:
3215: roff_setstrn(&r->strtab, name, strlen(name), string,
1.207 schwarze 3216: string ? strlen(string) : 0, append);
1.164 kristaps 3217: }
3218:
3219: static void
1.166 kristaps 3220: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.193 schwarze 3221: const char *string, size_t stringsz, int append)
1.164 kristaps 3222: {
1.166 kristaps 3223: struct roffkv *n;
1.164 kristaps 3224: char *c;
3225: int i;
3226: size_t oldch, newch;
1.92 schwarze 3227:
1.106 kristaps 3228: /* Search for an existing string with the same name. */
1.164 kristaps 3229: n = *r;
3230:
1.211 schwarze 3231: while (n && (namesz != n->key.sz ||
3232: strncmp(n->key.p, name, namesz)))
1.92 schwarze 3233: n = n->next;
1.94 kristaps 3234:
3235: if (NULL == n) {
1.106 kristaps 3236: /* Create a new string table entry. */
1.166 kristaps 3237: n = mandoc_malloc(sizeof(struct roffkv));
3238: n->key.p = mandoc_strndup(name, namesz);
3239: n->key.sz = namesz;
3240: n->val.p = NULL;
3241: n->val.sz = 0;
1.164 kristaps 3242: n->next = *r;
3243: *r = n;
1.193 schwarze 3244: } else if (0 == append) {
1.166 kristaps 3245: free(n->val.p);
3246: n->val.p = NULL;
3247: n->val.sz = 0;
1.106 kristaps 3248: }
3249:
3250: if (NULL == string)
3251: return;
3252:
3253: /*
3254: * One additional byte for the '\n' in multiline mode,
3255: * and one for the terminating '\0'.
3256: */
1.193 schwarze 3257: newch = stringsz + (1 < append ? 2u : 1u);
1.164 kristaps 3258:
1.166 kristaps 3259: if (NULL == n->val.p) {
3260: n->val.p = mandoc_malloc(newch);
3261: *n->val.p = '\0';
1.106 kristaps 3262: oldch = 0;
3263: } else {
1.166 kristaps 3264: oldch = n->val.sz;
3265: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.106 kristaps 3266: }
3267:
3268: /* Skip existing content in the destination buffer. */
1.166 kristaps 3269: c = n->val.p + (int)oldch;
1.106 kristaps 3270:
3271: /* Append new content to the destination buffer. */
1.164 kristaps 3272: i = 0;
3273: while (i < (int)stringsz) {
1.106 kristaps 3274: /*
3275: * Rudimentary roff copy mode:
3276: * Handle escaped backslashes.
3277: */
1.164 kristaps 3278: if ('\\' == string[i] && '\\' == string[i + 1])
3279: i++;
3280: *c++ = string[i++];
1.106 kristaps 3281: }
1.94 kristaps 3282:
1.106 kristaps 3283: /* Append terminating bytes. */
1.193 schwarze 3284: if (1 < append)
1.106 kristaps 3285: *c++ = '\n';
1.163 kristaps 3286:
1.106 kristaps 3287: *c = '\0';
1.166 kristaps 3288: n->val.sz = (int)(c - n->val.p);
1.92 schwarze 3289: }
3290:
1.94 kristaps 3291: static const char *
3292: roff_getstrn(const struct roff *r, const char *name, size_t len)
1.92 schwarze 3293: {
1.166 kristaps 3294: const struct roffkv *n;
1.191 schwarze 3295: int i;
1.92 schwarze 3296:
1.164 kristaps 3297: for (n = r->strtab; n; n = n->next)
1.207 schwarze 3298: if (0 == strncmp(name, n->key.p, len) &&
3299: '\0' == n->key.p[(int)len])
1.277 schwarze 3300: return n->val.p;
1.191 schwarze 3301:
3302: for (i = 0; i < PREDEFS_MAX; i++)
3303: if (0 == strncmp(name, predefs[i].name, len) &&
3304: '\0' == predefs[i].name[(int)len])
1.277 schwarze 3305: return predefs[i].str;
1.94 kristaps 3306:
1.277 schwarze 3307: return NULL;
1.92 schwarze 3308: }
3309:
1.94 kristaps 3310: static void
1.167 kristaps 3311: roff_freestr(struct roffkv *r)
1.92 schwarze 3312: {
1.166 kristaps 3313: struct roffkv *n, *nn;
1.92 schwarze 3314:
1.167 kristaps 3315: for (n = r; n; n = nn) {
1.166 kristaps 3316: free(n->key.p);
3317: free(n->val.p);
1.92 schwarze 3318: nn = n->next;
3319: free(n);
3320: }
1.114 kristaps 3321: }
1.266 schwarze 3322:
3323: /* --- accessors and utility functions ------------------------------------ */
1.114 kristaps 3324:
3325: const struct tbl_span *
3326: roff_span(const struct roff *r)
3327: {
1.207 schwarze 3328:
1.277 schwarze 3329: return r->tbl ? tbl_span(r->tbl) : NULL;
1.125 kristaps 3330: }
3331:
3332: const struct eqn *
3333: roff_eqn(const struct roff *r)
3334: {
1.207 schwarze 3335:
1.277 schwarze 3336: return r->last_eqn ? &r->last_eqn->eqn : NULL;
1.164 kristaps 3337: }
3338:
3339: /*
3340: * Duplicate an input string, making the appropriate character
3341: * conversations (as stipulated by `tr') along the way.
3342: * Returns a heap-allocated string with all the replacements made.
3343: */
3344: char *
3345: roff_strdup(const struct roff *r, const char *p)
3346: {
1.166 kristaps 3347: const struct roffkv *cp;
1.164 kristaps 3348: char *res;
3349: const char *pp;
3350: size_t ssz, sz;
3351: enum mandoc_esc esc;
3352:
1.167 kristaps 3353: if (NULL == r->xmbtab && NULL == r->xtab)
1.277 schwarze 3354: return mandoc_strdup(p);
1.164 kristaps 3355: else if ('\0' == *p)
1.277 schwarze 3356: return mandoc_strdup("");
1.164 kristaps 3357:
3358: /*
3359: * Step through each character looking for term matches
3360: * (remember that a `tr' can be invoked with an escape, which is
3361: * a glyph but the escape is multi-character).
3362: * We only do this if the character hash has been initialised
3363: * and the string is >0 length.
3364: */
3365:
3366: res = NULL;
3367: ssz = 0;
3368:
3369: while ('\0' != *p) {
1.167 kristaps 3370: if ('\\' != *p && r->xtab && r->xtab[(int)*p].p) {
3371: sz = r->xtab[(int)*p].sz;
3372: res = mandoc_realloc(res, ssz + sz + 1);
3373: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3374: ssz += sz;
3375: p++;
3376: continue;
3377: } else if ('\\' != *p) {
3378: res = mandoc_realloc(res, ssz + 2);
3379: res[ssz++] = *p++;
3380: continue;
3381: }
3382:
1.164 kristaps 3383: /* Search for term matches. */
1.167 kristaps 3384: for (cp = r->xmbtab; cp; cp = cp->next)
1.166 kristaps 3385: if (0 == strncmp(p, cp->key.p, cp->key.sz))
1.164 kristaps 3386: break;
3387:
3388: if (NULL != cp) {
3389: /*
3390: * A match has been found.
3391: * Append the match to the array and move
3392: * forward by its keysize.
3393: */
1.207 schwarze 3394: res = mandoc_realloc(res,
3395: ssz + cp->val.sz + 1);
1.166 kristaps 3396: memcpy(res + ssz, cp->val.p, cp->val.sz);
3397: ssz += cp->val.sz;
3398: p += (int)cp->key.sz;
1.164 kristaps 3399: continue;
3400: }
3401:
1.167 kristaps 3402: /*
3403: * Handle escapes carefully: we need to copy
3404: * over just the escape itself, or else we might
3405: * do replacements within the escape itself.
3406: * Make sure to pass along the bogus string.
3407: */
3408: pp = p++;
3409: esc = mandoc_escape(&p, NULL, NULL);
3410: if (ESCAPE_ERROR == esc) {
3411: sz = strlen(pp);
1.164 kristaps 3412: res = mandoc_realloc(res, ssz + sz + 1);
3413: memcpy(res + ssz, pp, sz);
1.167 kristaps 3414: break;
1.164 kristaps 3415: }
1.207 schwarze 3416: /*
3417: * We bail out on bad escapes.
1.167 kristaps 3418: * No need to warn: we already did so when
3419: * roff_res() was called.
3420: */
3421: sz = (int)(p - pp);
3422: res = mandoc_realloc(res, ssz + sz + 1);
3423: memcpy(res + ssz, pp, sz);
3424: ssz += sz;
1.164 kristaps 3425: }
3426:
3427: res[(int)ssz] = '\0';
1.277 schwarze 3428: return res;
1.227 schwarze 3429: }
3430:
3431: int
3432: roff_getformat(const struct roff *r)
3433: {
3434:
1.277 schwarze 3435: return r->format;
1.174 kristaps 3436: }
3437:
3438: /*
1.207 schwarze 3439: * Find out whether a line is a macro line or not.
1.174 kristaps 3440: * If it is, adjust the current position and return one; if it isn't,
3441: * return zero and don't change the current position.
3442: * If the control character has been set with `.cc', then let that grain
3443: * precedence.
3444: * This is slighly contrary to groff, where using the non-breaking
3445: * control character when `cc' has been invoked will cause the
3446: * non-breaking macro contents to be printed verbatim.
3447: */
3448: int
3449: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
3450: {
3451: int pos;
3452:
3453: pos = *ppos;
3454:
3455: if (0 != r->control && cp[pos] == r->control)
3456: pos++;
3457: else if (0 != r->control)
1.277 schwarze 3458: return 0;
1.174 kristaps 3459: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
3460: pos += 2;
3461: else if ('.' == cp[pos] || '\'' == cp[pos])
3462: pos++;
3463: else
1.277 schwarze 3464: return 0;
1.174 kristaps 3465:
3466: while (' ' == cp[pos] || '\t' == cp[pos])
3467: pos++;
3468:
3469: *ppos = pos;
1.277 schwarze 3470: return 1;
1.74 kristaps 3471: }
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