Annotation of mandoc/roff.c, Revision 1.275
1.275 ! schwarze 1: /* $Id: roff.c,v 1.274 2015/08/29 21:37:20 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"
1.33 kristaps 35:
1.141 kristaps 36: /* Maximum number of nested if-else conditionals. */
1.82 kristaps 37: #define RSTACK_MAX 128
38:
1.170 schwarze 39: /* Maximum number of string expansions per line, to break infinite loops. */
40: #define EXPAND_LIMIT 1000
41:
1.266 schwarze 42: /* --- data types --------------------------------------------------------- */
43:
1.67 kristaps 44: enum rofft {
1.251 schwarze 45: ROFF_ab,
1.103 kristaps 46: ROFF_ad,
1.251 schwarze 47: ROFF_af,
48: ROFF_aln,
49: ROFF_als,
1.80 kristaps 50: ROFF_am,
1.251 schwarze 51: ROFF_am1,
1.80 kristaps 52: ROFF_ami,
1.251 schwarze 53: ROFF_ami1,
1.193 schwarze 54: ROFF_as,
1.251 schwarze 55: ROFF_as1,
56: ROFF_asciify,
57: ROFF_backtrace,
58: ROFF_bd,
59: ROFF_bleedat,
60: ROFF_blm,
61: ROFF_box,
62: ROFF_boxa,
63: ROFF_bp,
64: ROFF_BP,
65: /* MAN_br, MDOC_br */
66: ROFF_break,
67: ROFF_breakchar,
68: ROFF_brnl,
69: ROFF_brp,
70: ROFF_brpnl,
71: ROFF_c2,
1.174 kristaps 72: ROFF_cc,
1.194 schwarze 73: ROFF_ce,
1.251 schwarze 74: ROFF_cf,
75: ROFF_cflags,
76: ROFF_ch,
77: ROFF_char,
78: ROFF_chop,
79: ROFF_class,
80: ROFF_close,
81: ROFF_CL,
82: ROFF_color,
83: ROFF_composite,
84: ROFF_continue,
85: ROFF_cp,
86: ROFF_cropat,
87: ROFF_cs,
88: ROFF_cu,
89: ROFF_da,
90: ROFF_dch,
91: ROFF_Dd,
1.80 kristaps 92: ROFF_de,
1.251 schwarze 93: ROFF_de1,
94: ROFF_defcolor,
1.80 kristaps 95: ROFF_dei,
1.251 schwarze 96: ROFF_dei1,
97: ROFF_device,
98: ROFF_devicem,
99: ROFF_di,
100: ROFF_do,
1.83 schwarze 101: ROFF_ds,
1.251 schwarze 102: ROFF_ds1,
103: ROFF_dwh,
104: ROFF_dt,
105: ROFF_ec,
106: ROFF_ecr,
107: ROFF_ecs,
1.82 kristaps 108: ROFF_el,
1.251 schwarze 109: ROFF_em,
110: ROFF_EN,
111: ROFF_eo,
112: ROFF_EP,
113: ROFF_EQ,
114: ROFF_errprint,
115: ROFF_ev,
116: ROFF_evc,
117: ROFF_ex,
118: ROFF_fallback,
1.185 schwarze 119: ROFF_fam,
1.251 schwarze 120: ROFF_fc,
121: ROFF_fchar,
122: ROFF_fcolor,
123: ROFF_fdeferlig,
124: ROFF_feature,
125: /* MAN_fi; ignored in mdoc(7) */
126: ROFF_fkern,
127: ROFF_fl,
128: ROFF_flig,
129: ROFF_fp,
130: ROFF_fps,
131: ROFF_fschar,
132: ROFF_fspacewidth,
133: ROFF_fspecial,
134: /* MAN_ft; ignored in mdoc(7) */
135: ROFF_ftr,
136: ROFF_fzoom,
137: ROFF_gcolor,
138: ROFF_hc,
139: ROFF_hcode,
140: ROFF_hidechar,
141: ROFF_hla,
142: ROFF_hlm,
143: ROFF_hpf,
144: ROFF_hpfa,
145: ROFF_hpfcode,
1.186 schwarze 146: ROFF_hw,
1.103 kristaps 147: ROFF_hy,
1.251 schwarze 148: ROFF_hylang,
149: ROFF_hylen,
150: ROFF_hym,
151: ROFF_hypp,
152: ROFF_hys,
1.82 kristaps 153: ROFF_ie,
1.75 kristaps 154: ROFF_if,
1.76 kristaps 155: ROFF_ig,
1.251 schwarze 156: /* MAN_in; ignored in mdoc(7) */
157: ROFF_index,
1.123 schwarze 158: ROFF_it,
1.251 schwarze 159: ROFF_itc,
160: ROFF_IX,
161: ROFF_kern,
162: ROFF_kernafter,
163: ROFF_kernbefore,
164: ROFF_kernpair,
165: ROFF_lc,
166: ROFF_lc_ctype,
167: ROFF_lds,
168: ROFF_length,
169: ROFF_letadj,
170: ROFF_lf,
171: ROFF_lg,
172: ROFF_lhang,
173: ROFF_linetabs,
174: /* MAN_ll, MDOC_ll */
175: ROFF_lnr,
176: ROFF_lnrf,
177: ROFF_lpfx,
178: ROFF_ls,
179: ROFF_lsm,
180: ROFF_lt,
181: ROFF_mc,
182: ROFF_mediasize,
183: ROFF_minss,
184: ROFF_mk,
185: ROFF_mso,
1.256 schwarze 186: ROFF_na,
1.103 kristaps 187: ROFF_ne,
1.251 schwarze 188: /* MAN_nf; ignored in mdoc(7) */
1.103 kristaps 189: ROFF_nh,
1.251 schwarze 190: ROFF_nhychar,
191: ROFF_nm,
192: ROFF_nn,
193: ROFF_nop,
1.104 kristaps 194: ROFF_nr,
1.251 schwarze 195: ROFF_nrf,
196: ROFF_nroff,
1.124 schwarze 197: ROFF_ns,
1.251 schwarze 198: ROFF_nx,
199: ROFF_open,
200: ROFF_opena,
201: ROFF_os,
202: ROFF_output,
203: ROFF_padj,
204: ROFF_papersize,
205: ROFF_pc,
206: ROFF_pev,
207: ROFF_pi,
208: ROFF_PI,
1.229 schwarze 209: ROFF_pl,
1.251 schwarze 210: ROFF_pm,
211: ROFF_pn,
212: ROFF_pnr,
213: ROFF_po,
1.124 schwarze 214: ROFF_ps,
1.251 schwarze 215: ROFF_psbb,
216: ROFF_pshape,
217: ROFF_pso,
218: ROFF_ptr,
219: ROFF_pvs,
220: ROFF_rchar,
221: ROFF_rd,
222: ROFF_recursionlimit,
223: ROFF_return,
224: ROFF_rfschar,
225: ROFF_rhang,
226: ROFF_rj,
1.83 schwarze 227: ROFF_rm,
1.251 schwarze 228: ROFF_rn,
229: ROFF_rnn,
1.203 schwarze 230: ROFF_rr,
1.251 schwarze 231: ROFF_rs,
232: ROFF_rt,
233: ROFF_schar,
234: ROFF_sentchar,
235: ROFF_shc,
236: ROFF_shift,
237: ROFF_sizes,
1.105 kristaps 238: ROFF_so,
1.251 schwarze 239: /* MAN_sp, MDOC_sp */
240: ROFF_spacewidth,
241: ROFF_special,
242: ROFF_spreadwarn,
243: ROFF_ss,
244: ROFF_sty,
245: ROFF_substring,
246: ROFF_sv,
247: ROFF_sy,
248: ROFF_T_,
1.124 schwarze 249: ROFF_ta,
1.251 schwarze 250: ROFF_tc,
251: ROFF_TE,
252: ROFF_TH,
253: ROFF_ti,
254: ROFF_tkf,
255: ROFF_tl,
256: ROFF_tm,
257: ROFF_tm1,
258: ROFF_tmc,
1.83 schwarze 259: ROFF_tr,
1.251 schwarze 260: ROFF_track,
261: ROFF_transchar,
262: ROFF_trf,
263: ROFF_trimat,
264: ROFF_trin,
265: ROFF_trnt,
266: ROFF_troff,
1.109 kristaps 267: ROFF_TS,
1.251 schwarze 268: ROFF_uf,
269: ROFF_ul,
270: ROFF_unformat,
271: ROFF_unwatch,
272: ROFF_unwatchn,
273: ROFF_vpt,
274: ROFF_vs,
275: ROFF_warn,
276: ROFF_warnscale,
277: ROFF_watch,
278: ROFF_watchlength,
279: ROFF_watchn,
280: ROFF_wh,
281: ROFF_while,
282: ROFF_write,
283: ROFF_writec,
284: ROFF_writem,
285: ROFF_xflag,
1.76 kristaps 286: ROFF_cblock,
1.106 kristaps 287: ROFF_USERDEF,
1.67 kristaps 288: ROFF_MAX
289: };
290:
1.147 kristaps 291: /*
1.167 kristaps 292: * An incredibly-simple string buffer.
293: */
1.94 kristaps 294: struct roffstr {
1.167 kristaps 295: char *p; /* nil-terminated buffer */
296: size_t sz; /* saved strlen(p) */
1.166 kristaps 297: };
298:
299: /*
1.167 kristaps 300: * A key-value roffstr pair as part of a singly-linked list.
1.166 kristaps 301: */
302: struct roffkv {
303: struct roffstr key;
304: struct roffstr val;
305: struct roffkv *next; /* next in list */
1.94 kristaps 306: };
307:
1.180 schwarze 308: /*
309: * A single number register as part of a singly-linked list.
310: */
311: struct roffreg {
312: struct roffstr key;
1.181 schwarze 313: int val;
1.180 schwarze 314: struct roffreg *next;
315: };
316:
1.67 kristaps 317: struct roff {
1.128 kristaps 318: struct mparse *parse; /* parse point */
1.237 schwarze 319: const struct mchars *mchars; /* character table */
1.67 kristaps 320: struct roffnode *last; /* leaf of stack */
1.223 schwarze 321: int *rstack; /* stack of inverted `ie' values */
1.180 schwarze 322: struct roffreg *regtab; /* number registers */
1.166 kristaps 323: struct roffkv *strtab; /* user-defined strings & macros */
1.167 kristaps 324: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
325: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.106 kristaps 326: const char *current_string; /* value of last called user macro */
1.118 kristaps 327: struct tbl_node *first_tbl; /* first table parsed */
328: struct tbl_node *last_tbl; /* last table parsed */
329: struct tbl_node *tbl; /* current table being parsed */
1.125 kristaps 330: struct eqn_node *last_eqn; /* last equation parsed */
331: struct eqn_node *first_eqn; /* first equation parsed */
332: struct eqn_node *eqn; /* current equation being parsed */
1.230 schwarze 333: int eqn_inline; /* current equation is inline */
1.223 schwarze 334: int options; /* parse options */
335: int rstacksz; /* current size limit of rstack */
336: int rstackpos; /* position in rstack */
1.227 schwarze 337: int format; /* current file in mdoc or man format */
1.273 schwarze 338: int argc; /* number of args of the last macro */
1.223 schwarze 339: char control; /* control character */
1.79 kristaps 340: };
341:
1.67 kristaps 342: struct roffnode {
343: enum rofft tok; /* type of node */
344: struct roffnode *parent; /* up one in stack */
345: int line; /* parse line */
346: int col; /* parse col */
1.106 kristaps 347: char *name; /* node name, e.g. macro name */
1.79 kristaps 348: char *end; /* end-rules: custom token */
349: int endspan; /* end-rules: next-line or infty */
1.198 schwarze 350: int rule; /* current evaluation rule */
1.67 kristaps 351: };
352:
353: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.72 kristaps 354: enum rofft tok, /* tok of macro */ \
1.238 schwarze 355: struct buf *buf, /* input buffer */ \
1.67 kristaps 356: int ln, /* parse line */ \
1.75 kristaps 357: int ppos, /* original pos in buffer */ \
358: int pos, /* current pos in buffer */ \
1.74 kristaps 359: int *offs /* reset offset of buffer data */
1.67 kristaps 360:
361: typedef enum rofferr (*roffproc)(ROFF_ARGS);
362:
363: struct roffmac {
364: const char *name; /* macro name */
1.79 kristaps 365: roffproc proc; /* process new macro */
366: roffproc text; /* process as child text of macro */
367: roffproc sub; /* process as child of macro */
368: int flags;
369: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.85 kristaps 370: struct roffmac *next;
1.67 kristaps 371: };
372:
1.141 kristaps 373: struct predef {
374: const char *name; /* predefined input name */
375: const char *str; /* replacement symbol */
376: };
377:
378: #define PREDEF(__name, __str) \
379: { (__name), (__str) },
380:
1.266 schwarze 381: /* --- function prototypes ------------------------------------------------ */
382:
1.155 kristaps 383: static enum rofft roffhash_find(const char *, size_t);
384: static void roffhash_init(void);
385: static void roffnode_cleanscope(struct roff *);
386: static void roffnode_pop(struct roff *);
387: static void roffnode_push(struct roff *, enum rofft,
388: const char *, int, int);
1.80 kristaps 389: static enum rofferr roff_block(ROFF_ARGS);
390: static enum rofferr roff_block_text(ROFF_ARGS);
391: static enum rofferr roff_block_sub(ROFF_ARGS);
1.251 schwarze 392: static enum rofferr roff_brp(ROFF_ARGS);
1.80 kristaps 393: static enum rofferr roff_cblock(ROFF_ARGS);
1.174 kristaps 394: static enum rofferr roff_cc(ROFF_ARGS);
1.195 schwarze 395: static void roff_ccond(struct roff *, int, int);
1.82 kristaps 396: static enum rofferr roff_cond(ROFF_ARGS);
397: static enum rofferr roff_cond_text(ROFF_ARGS);
398: static enum rofferr roff_cond_sub(ROFF_ARGS);
1.92 schwarze 399: static enum rofferr roff_ds(ROFF_ARGS);
1.238 schwarze 400: static enum rofferr roff_eqndelim(struct roff *, struct buf *, int);
1.271 schwarze 401: static int roff_evalcond(struct roff *r, int, char *, int *);
1.234 kristaps 402: static int roff_evalnum(struct roff *, int,
403: const char *, int *, int *, int);
404: static int roff_evalpar(struct roff *, int,
1.261 schwarze 405: const char *, int *, int *, int);
1.198 schwarze 406: static int roff_evalstrcond(const char *, int *);
1.155 kristaps 407: static void roff_free1(struct roff *);
1.180 schwarze 408: static void roff_freereg(struct roffreg *);
1.167 kristaps 409: static void roff_freestr(struct roffkv *);
1.212 schwarze 410: static size_t roff_getname(struct roff *, char **, int, int);
1.261 schwarze 411: static int roff_getnum(const char *, int *, int *, int);
1.184 schwarze 412: static int roff_getop(const char *, int *, char *);
1.181 schwarze 413: static int roff_getregn(const struct roff *,
414: const char *, size_t);
1.273 schwarze 415: static int roff_getregro(const struct roff *,
416: const char *name);
1.207 schwarze 417: static const char *roff_getstrn(const struct roff *,
1.94 kristaps 418: const char *, size_t);
1.271 schwarze 419: static int roff_hasregn(const struct roff *,
420: const char *, size_t);
1.251 schwarze 421: static enum rofferr roff_insec(ROFF_ARGS);
1.178 schwarze 422: static enum rofferr roff_it(ROFF_ARGS);
1.103 kristaps 423: static enum rofferr roff_line_ignore(ROFF_ARGS);
1.265 schwarze 424: static void roff_man_alloc1(struct roff_man *);
425: static void roff_man_free1(struct roff_man *);
1.89 kristaps 426: static enum rofferr roff_nr(ROFF_ARGS);
1.214 schwarze 427: static enum rofft roff_parse(struct roff *, char *, int *,
428: int, int);
1.238 schwarze 429: static enum rofferr roff_parsetext(struct buf *, int, int *);
430: static enum rofferr roff_res(struct roff *, struct buf *, int, int);
1.122 schwarze 431: static enum rofferr roff_rm(ROFF_ARGS);
1.203 schwarze 432: static enum rofferr roff_rr(ROFF_ARGS);
1.94 kristaps 433: static void roff_setstr(struct roff *,
1.106 kristaps 434: const char *, const char *, int);
1.207 schwarze 435: static void roff_setstrn(struct roffkv **, const char *,
1.164 kristaps 436: size_t, const char *, size_t, int);
1.105 kristaps 437: static enum rofferr roff_so(ROFF_ARGS);
1.164 kristaps 438: static enum rofferr roff_tr(ROFF_ARGS);
1.175 schwarze 439: static enum rofferr roff_Dd(ROFF_ARGS);
440: static enum rofferr roff_TH(ROFF_ARGS);
1.109 kristaps 441: static enum rofferr roff_TE(ROFF_ARGS);
442: static enum rofferr roff_TS(ROFF_ARGS);
1.125 kristaps 443: static enum rofferr roff_EQ(ROFF_ARGS);
444: static enum rofferr roff_EN(ROFF_ARGS);
1.112 kristaps 445: static enum rofferr roff_T_(ROFF_ARGS);
1.251 schwarze 446: static enum rofferr roff_unsupp(ROFF_ARGS);
1.106 kristaps 447: static enum rofferr roff_userdef(ROFF_ARGS);
1.67 kristaps 448:
1.266 schwarze 449: /* --- constant data ------------------------------------------------------ */
450:
1.155 kristaps 451: /* See roffhash_find() */
1.85 kristaps 452:
453: #define ASCII_HI 126
454: #define ASCII_LO 33
455: #define HASHWIDTH (ASCII_HI - ASCII_LO + 1)
456:
1.261 schwarze 457: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
458: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
459:
1.85 kristaps 460: static struct roffmac *hash[HASHWIDTH];
461:
462: static struct roffmac roffs[ROFF_MAX] = {
1.251 schwarze 463: { "ab", roff_unsupp, NULL, NULL, 0, NULL },
1.103 kristaps 464: { "ad", roff_line_ignore, NULL, NULL, 0, NULL },
1.251 schwarze 465: { "af", roff_line_ignore, NULL, NULL, 0, NULL },
466: { "aln", roff_unsupp, NULL, NULL, 0, NULL },
467: { "als", roff_unsupp, NULL, NULL, 0, NULL },
1.85 kristaps 468: { "am", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.251 schwarze 469: { "am1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.85 kristaps 470: { "ami", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.251 schwarze 471: { "ami1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.193 schwarze 472: { "as", roff_ds, NULL, NULL, 0, NULL },
1.251 schwarze 473: { "as1", roff_ds, NULL, NULL, 0, NULL },
474: { "asciify", roff_unsupp, NULL, NULL, 0, NULL },
475: { "backtrace", roff_line_ignore, NULL, NULL, 0, NULL },
476: { "bd", roff_line_ignore, NULL, NULL, 0, NULL },
477: { "bleedat", roff_line_ignore, NULL, NULL, 0, NULL },
478: { "blm", roff_unsupp, NULL, NULL, 0, NULL },
479: { "box", roff_unsupp, NULL, NULL, 0, NULL },
480: { "boxa", roff_unsupp, NULL, NULL, 0, NULL },
481: { "bp", roff_line_ignore, NULL, NULL, 0, NULL },
482: { "BP", roff_unsupp, NULL, NULL, 0, NULL },
483: { "break", roff_unsupp, NULL, NULL, 0, NULL },
484: { "breakchar", roff_line_ignore, NULL, NULL, 0, NULL },
485: { "brnl", roff_line_ignore, NULL, NULL, 0, NULL },
486: { "brp", roff_brp, NULL, NULL, 0, NULL },
487: { "brpnl", roff_line_ignore, NULL, NULL, 0, NULL },
488: { "c2", roff_unsupp, NULL, NULL, 0, NULL },
1.174 kristaps 489: { "cc", roff_cc, NULL, NULL, 0, NULL },
1.194 schwarze 490: { "ce", roff_line_ignore, NULL, NULL, 0, NULL },
1.251 schwarze 491: { "cf", roff_insec, NULL, NULL, 0, NULL },
492: { "cflags", roff_line_ignore, NULL, NULL, 0, NULL },
493: { "ch", roff_line_ignore, NULL, NULL, 0, NULL },
494: { "char", roff_unsupp, NULL, NULL, 0, NULL },
495: { "chop", roff_unsupp, NULL, NULL, 0, NULL },
496: { "class", roff_line_ignore, NULL, NULL, 0, NULL },
497: { "close", roff_insec, NULL, NULL, 0, NULL },
498: { "CL", roff_unsupp, NULL, NULL, 0, NULL },
499: { "color", roff_line_ignore, NULL, NULL, 0, NULL },
500: { "composite", roff_unsupp, NULL, NULL, 0, NULL },
501: { "continue", roff_unsupp, NULL, NULL, 0, NULL },
502: { "cp", roff_line_ignore, NULL, NULL, 0, NULL },
503: { "cropat", roff_line_ignore, NULL, NULL, 0, NULL },
504: { "cs", roff_line_ignore, NULL, NULL, 0, NULL },
505: { "cu", roff_line_ignore, NULL, NULL, 0, NULL },
506: { "da", roff_unsupp, NULL, NULL, 0, NULL },
507: { "dch", roff_unsupp, NULL, NULL, 0, NULL },
508: { "Dd", roff_Dd, NULL, NULL, 0, NULL },
1.85 kristaps 509: { "de", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.251 schwarze 510: { "de1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
511: { "defcolor", roff_line_ignore, NULL, NULL, 0, NULL },
1.85 kristaps 512: { "dei", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.251 schwarze 513: { "dei1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
514: { "device", roff_unsupp, NULL, NULL, 0, NULL },
515: { "devicem", roff_unsupp, NULL, NULL, 0, NULL },
516: { "di", roff_unsupp, NULL, NULL, 0, NULL },
517: { "do", roff_unsupp, NULL, NULL, 0, NULL },
1.92 schwarze 518: { "ds", roff_ds, NULL, NULL, 0, NULL },
1.251 schwarze 519: { "ds1", roff_ds, NULL, NULL, 0, NULL },
520: { "dwh", roff_unsupp, NULL, NULL, 0, NULL },
521: { "dt", roff_unsupp, NULL, NULL, 0, NULL },
522: { "ec", roff_unsupp, NULL, NULL, 0, NULL },
523: { "ecr", roff_unsupp, NULL, NULL, 0, NULL },
524: { "ecs", roff_unsupp, NULL, NULL, 0, NULL },
1.85 kristaps 525: { "el", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
1.251 schwarze 526: { "em", roff_unsupp, NULL, NULL, 0, NULL },
527: { "EN", roff_EN, NULL, NULL, 0, NULL },
528: { "eo", roff_unsupp, NULL, NULL, 0, NULL },
529: { "EP", roff_unsupp, NULL, NULL, 0, NULL },
530: { "EQ", roff_EQ, NULL, NULL, 0, NULL },
531: { "errprint", roff_line_ignore, NULL, NULL, 0, NULL },
532: { "ev", roff_unsupp, NULL, NULL, 0, NULL },
533: { "evc", roff_unsupp, NULL, NULL, 0, NULL },
534: { "ex", roff_unsupp, NULL, NULL, 0, NULL },
535: { "fallback", roff_line_ignore, NULL, NULL, 0, NULL },
1.185 schwarze 536: { "fam", roff_line_ignore, NULL, NULL, 0, NULL },
1.251 schwarze 537: { "fc", roff_unsupp, NULL, NULL, 0, NULL },
538: { "fchar", roff_unsupp, NULL, NULL, 0, NULL },
539: { "fcolor", roff_line_ignore, NULL, NULL, 0, NULL },
540: { "fdeferlig", roff_line_ignore, NULL, NULL, 0, NULL },
541: { "feature", roff_line_ignore, NULL, NULL, 0, NULL },
542: { "fkern", roff_line_ignore, NULL, NULL, 0, NULL },
543: { "fl", roff_line_ignore, NULL, NULL, 0, NULL },
544: { "flig", roff_line_ignore, NULL, NULL, 0, NULL },
545: { "fp", roff_line_ignore, NULL, NULL, 0, NULL },
546: { "fps", roff_line_ignore, NULL, NULL, 0, NULL },
547: { "fschar", roff_unsupp, NULL, NULL, 0, NULL },
548: { "fspacewidth", roff_line_ignore, NULL, NULL, 0, NULL },
549: { "fspecial", roff_line_ignore, NULL, NULL, 0, NULL },
550: { "ftr", roff_line_ignore, NULL, NULL, 0, NULL },
551: { "fzoom", roff_line_ignore, NULL, NULL, 0, NULL },
552: { "gcolor", roff_line_ignore, NULL, NULL, 0, NULL },
553: { "hc", roff_line_ignore, NULL, NULL, 0, NULL },
554: { "hcode", roff_line_ignore, NULL, NULL, 0, NULL },
555: { "hidechar", roff_line_ignore, NULL, NULL, 0, NULL },
556: { "hla", roff_line_ignore, NULL, NULL, 0, NULL },
557: { "hlm", roff_line_ignore, NULL, NULL, 0, NULL },
558: { "hpf", roff_line_ignore, NULL, NULL, 0, NULL },
559: { "hpfa", roff_line_ignore, NULL, NULL, 0, NULL },
560: { "hpfcode", roff_line_ignore, NULL, NULL, 0, NULL },
1.186 schwarze 561: { "hw", roff_line_ignore, NULL, NULL, 0, NULL },
1.103 kristaps 562: { "hy", roff_line_ignore, NULL, NULL, 0, NULL },
1.251 schwarze 563: { "hylang", roff_line_ignore, NULL, NULL, 0, NULL },
564: { "hylen", roff_line_ignore, NULL, NULL, 0, NULL },
565: { "hym", roff_line_ignore, NULL, NULL, 0, NULL },
566: { "hypp", roff_line_ignore, NULL, NULL, 0, NULL },
567: { "hys", roff_line_ignore, NULL, NULL, 0, NULL },
1.85 kristaps 568: { "ie", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
569: { "if", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
570: { "ig", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.251 schwarze 571: { "index", roff_unsupp, NULL, NULL, 0, NULL },
1.178 schwarze 572: { "it", roff_it, NULL, NULL, 0, NULL },
1.251 schwarze 573: { "itc", roff_unsupp, NULL, NULL, 0, NULL },
574: { "IX", roff_line_ignore, NULL, NULL, 0, NULL },
575: { "kern", roff_line_ignore, NULL, NULL, 0, NULL },
576: { "kernafter", roff_line_ignore, NULL, NULL, 0, NULL },
577: { "kernbefore", roff_line_ignore, NULL, NULL, 0, NULL },
578: { "kernpair", roff_line_ignore, NULL, NULL, 0, NULL },
579: { "lc", roff_unsupp, NULL, NULL, 0, NULL },
580: { "lc_ctype", roff_unsupp, NULL, NULL, 0, NULL },
581: { "lds", roff_unsupp, NULL, NULL, 0, NULL },
582: { "length", roff_unsupp, NULL, NULL, 0, NULL },
583: { "letadj", roff_line_ignore, NULL, NULL, 0, NULL },
584: { "lf", roff_insec, NULL, NULL, 0, NULL },
585: { "lg", roff_line_ignore, NULL, NULL, 0, NULL },
586: { "lhang", roff_line_ignore, NULL, NULL, 0, NULL },
587: { "linetabs", roff_unsupp, NULL, NULL, 0, NULL },
588: { "lnr", roff_unsupp, NULL, NULL, 0, NULL },
589: { "lnrf", roff_unsupp, NULL, NULL, 0, NULL },
590: { "lpfx", roff_unsupp, NULL, NULL, 0, NULL },
591: { "ls", roff_line_ignore, NULL, NULL, 0, NULL },
592: { "lsm", roff_unsupp, NULL, NULL, 0, NULL },
593: { "lt", roff_line_ignore, NULL, NULL, 0, NULL },
594: { "mc", roff_line_ignore, NULL, NULL, 0, NULL },
595: { "mediasize", roff_line_ignore, NULL, NULL, 0, NULL },
596: { "minss", roff_line_ignore, NULL, NULL, 0, NULL },
597: { "mk", roff_line_ignore, NULL, NULL, 0, NULL },
598: { "mso", roff_insec, NULL, NULL, 0, NULL },
1.256 schwarze 599: { "na", roff_line_ignore, NULL, NULL, 0, NULL },
1.103 kristaps 600: { "ne", roff_line_ignore, NULL, NULL, 0, NULL },
601: { "nh", roff_line_ignore, NULL, NULL, 0, NULL },
1.251 schwarze 602: { "nhychar", roff_line_ignore, NULL, NULL, 0, NULL },
603: { "nm", roff_unsupp, NULL, NULL, 0, NULL },
604: { "nn", roff_unsupp, NULL, NULL, 0, NULL },
605: { "nop", roff_unsupp, NULL, NULL, 0, NULL },
1.104 kristaps 606: { "nr", roff_nr, NULL, NULL, 0, NULL },
1.251 schwarze 607: { "nrf", roff_unsupp, NULL, NULL, 0, NULL },
608: { "nroff", roff_line_ignore, NULL, NULL, 0, NULL },
1.124 schwarze 609: { "ns", roff_line_ignore, NULL, NULL, 0, NULL },
1.251 schwarze 610: { "nx", roff_insec, NULL, NULL, 0, NULL },
611: { "open", roff_insec, NULL, NULL, 0, NULL },
612: { "opena", roff_insec, NULL, NULL, 0, NULL },
613: { "os", roff_line_ignore, NULL, NULL, 0, NULL },
614: { "output", roff_unsupp, NULL, NULL, 0, NULL },
615: { "padj", roff_line_ignore, NULL, NULL, 0, NULL },
616: { "papersize", roff_line_ignore, NULL, NULL, 0, NULL },
617: { "pc", roff_line_ignore, NULL, NULL, 0, NULL },
618: { "pev", roff_line_ignore, NULL, NULL, 0, NULL },
619: { "pi", roff_insec, NULL, NULL, 0, NULL },
620: { "PI", roff_unsupp, NULL, NULL, 0, NULL },
1.229 schwarze 621: { "pl", roff_line_ignore, NULL, NULL, 0, NULL },
1.251 schwarze 622: { "pm", roff_line_ignore, NULL, NULL, 0, NULL },
623: { "pn", roff_line_ignore, NULL, NULL, 0, NULL },
624: { "pnr", roff_line_ignore, NULL, NULL, 0, NULL },
625: { "po", roff_line_ignore, NULL, NULL, 0, NULL },
1.124 schwarze 626: { "ps", roff_line_ignore, NULL, NULL, 0, NULL },
1.251 schwarze 627: { "psbb", roff_unsupp, NULL, NULL, 0, NULL },
1.255 schwarze 628: { "pshape", roff_unsupp, NULL, NULL, 0, NULL },
1.251 schwarze 629: { "pso", roff_insec, NULL, NULL, 0, NULL },
630: { "ptr", roff_line_ignore, NULL, NULL, 0, NULL },
631: { "pvs", roff_line_ignore, NULL, NULL, 0, NULL },
632: { "rchar", roff_unsupp, NULL, NULL, 0, NULL },
633: { "rd", roff_line_ignore, NULL, NULL, 0, NULL },
634: { "recursionlimit", roff_line_ignore, NULL, NULL, 0, NULL },
635: { "return", roff_unsupp, NULL, NULL, 0, NULL },
636: { "rfschar", roff_unsupp, NULL, NULL, 0, NULL },
637: { "rhang", roff_line_ignore, NULL, NULL, 0, NULL },
638: { "rj", roff_line_ignore, NULL, NULL, 0, NULL },
1.122 schwarze 639: { "rm", roff_rm, NULL, NULL, 0, NULL },
1.251 schwarze 640: { "rn", roff_unsupp, NULL, NULL, 0, NULL },
641: { "rnn", roff_unsupp, NULL, NULL, 0, NULL },
1.203 schwarze 642: { "rr", roff_rr, NULL, NULL, 0, NULL },
1.251 schwarze 643: { "rs", roff_line_ignore, NULL, NULL, 0, NULL },
644: { "rt", roff_line_ignore, NULL, NULL, 0, NULL },
645: { "schar", roff_unsupp, NULL, NULL, 0, NULL },
646: { "sentchar", roff_line_ignore, NULL, NULL, 0, NULL },
647: { "shc", roff_line_ignore, NULL, NULL, 0, NULL },
648: { "shift", roff_unsupp, NULL, NULL, 0, NULL },
649: { "sizes", roff_line_ignore, NULL, NULL, 0, NULL },
1.105 kristaps 650: { "so", roff_so, NULL, NULL, 0, NULL },
1.251 schwarze 651: { "spacewidth", roff_line_ignore, NULL, NULL, 0, NULL },
652: { "special", roff_line_ignore, NULL, NULL, 0, NULL },
653: { "spreadwarn", roff_line_ignore, NULL, NULL, 0, NULL },
654: { "ss", roff_line_ignore, NULL, NULL, 0, NULL },
655: { "sty", roff_line_ignore, NULL, NULL, 0, NULL },
656: { "substring", roff_unsupp, NULL, NULL, 0, NULL },
657: { "sv", roff_line_ignore, NULL, NULL, 0, NULL },
658: { "sy", roff_insec, NULL, NULL, 0, NULL },
659: { "T&", roff_T_, NULL, NULL, 0, NULL },
1.255 schwarze 660: { "ta", roff_unsupp, NULL, NULL, 0, NULL },
1.251 schwarze 661: { "tc", roff_unsupp, NULL, NULL, 0, NULL },
662: { "TE", roff_TE, NULL, NULL, 0, NULL },
663: { "TH", roff_TH, NULL, NULL, 0, NULL },
1.255 schwarze 664: { "ti", roff_unsupp, NULL, NULL, 0, NULL },
1.251 schwarze 665: { "tkf", roff_line_ignore, NULL, NULL, 0, NULL },
666: { "tl", roff_unsupp, NULL, NULL, 0, NULL },
667: { "tm", roff_line_ignore, NULL, NULL, 0, NULL },
668: { "tm1", roff_line_ignore, NULL, NULL, 0, NULL },
669: { "tmc", roff_line_ignore, NULL, NULL, 0, NULL },
1.164 kristaps 670: { "tr", roff_tr, NULL, NULL, 0, NULL },
1.251 schwarze 671: { "track", roff_line_ignore, NULL, NULL, 0, NULL },
672: { "transchar", roff_line_ignore, NULL, NULL, 0, NULL },
673: { "trf", roff_insec, NULL, NULL, 0, NULL },
674: { "trimat", roff_line_ignore, NULL, NULL, 0, NULL },
675: { "trin", roff_unsupp, NULL, NULL, 0, NULL },
676: { "trnt", roff_unsupp, NULL, NULL, 0, NULL },
677: { "troff", roff_line_ignore, NULL, NULL, 0, NULL },
1.109 kristaps 678: { "TS", roff_TS, NULL, NULL, 0, NULL },
1.251 schwarze 679: { "uf", roff_line_ignore, NULL, NULL, 0, NULL },
680: { "ul", roff_line_ignore, NULL, NULL, 0, NULL },
681: { "unformat", roff_unsupp, NULL, NULL, 0, NULL },
682: { "unwatch", roff_line_ignore, NULL, NULL, 0, NULL },
683: { "unwatchn", roff_line_ignore, NULL, NULL, 0, NULL },
684: { "vpt", roff_line_ignore, NULL, NULL, 0, NULL },
685: { "vs", roff_line_ignore, NULL, NULL, 0, NULL },
686: { "warn", roff_line_ignore, NULL, NULL, 0, NULL },
687: { "warnscale", roff_line_ignore, NULL, NULL, 0, NULL },
688: { "watch", roff_line_ignore, NULL, NULL, 0, NULL },
689: { "watchlength", roff_line_ignore, NULL, NULL, 0, NULL },
690: { "watchn", roff_line_ignore, NULL, NULL, 0, NULL },
691: { "wh", roff_unsupp, NULL, NULL, 0, NULL },
692: { "while", roff_unsupp, NULL, NULL, 0, NULL },
693: { "write", roff_insec, NULL, NULL, 0, NULL },
694: { "writec", roff_insec, NULL, NULL, 0, NULL },
695: { "writem", roff_insec, NULL, NULL, 0, NULL },
696: { "xflag", roff_line_ignore, NULL, NULL, 0, NULL },
1.85 kristaps 697: { ".", roff_cblock, NULL, NULL, 0, NULL },
1.106 kristaps 698: { NULL, roff_userdef, NULL, NULL, 0, NULL },
1.67 kristaps 699: };
700:
1.200 schwarze 701: /* not currently implemented: Ds em Eq LP Me PP pp Or Rd Sf SH */
1.175 schwarze 702: const char *const __mdoc_reserved[] = {
703: "Ac", "Ad", "An", "Ao", "Ap", "Aq", "Ar", "At",
704: "Bc", "Bd", "Bf", "Bk", "Bl", "Bo", "Bq",
705: "Brc", "Bro", "Brq", "Bsx", "Bt", "Bx",
706: "Cd", "Cm", "Db", "Dc", "Dd", "Dl", "Do", "Dq",
1.200 schwarze 707: "Dt", "Dv", "Dx", "D1",
708: "Ec", "Ed", "Ef", "Ek", "El", "Em",
709: "En", "Eo", "Er", "Es", "Ev", "Ex",
1.175 schwarze 710: "Fa", "Fc", "Fd", "Fl", "Fn", "Fo", "Fr", "Ft", "Fx",
1.200 schwarze 711: "Hf", "Ic", "In", "It", "Lb", "Li", "Lk", "Lp",
712: "Ms", "Mt", "Nd", "Nm", "No", "Ns", "Nx",
1.175 schwarze 713: "Oc", "Oo", "Op", "Os", "Ot", "Ox",
1.200 schwarze 714: "Pa", "Pc", "Pf", "Po", "Pp", "Pq",
715: "Qc", "Ql", "Qo", "Qq", "Re", "Rs", "Rv",
716: "Sc", "Sh", "Sm", "So", "Sq",
1.175 schwarze 717: "Ss", "St", "Sx", "Sy",
718: "Ta", "Tn", "Ud", "Ux", "Va", "Vt", "Xc", "Xo", "Xr",
1.200 schwarze 719: "%A", "%B", "%C", "%D", "%I", "%J", "%N", "%O",
1.175 schwarze 720: "%P", "%Q", "%R", "%T", "%U", "%V",
721: NULL
722: };
723:
1.200 schwarze 724: /* not currently implemented: BT DE DS ME MT PT SY TQ YS */
1.175 schwarze 725: const char *const __man_reserved[] = {
1.200 schwarze 726: "AT", "B", "BI", "BR", "DT",
727: "EE", "EN", "EQ", "EX", "HP", "I", "IB", "IP", "IR",
728: "LP", "OP", "P", "PD", "PP",
729: "R", "RB", "RE", "RI", "RS", "SB", "SH", "SM", "SS",
730: "TE", "TH", "TP", "TS", "T&", "UC", "UE", "UR",
1.175 schwarze 731: NULL
732: };
733:
1.141 kristaps 734: /* Array of injected predefined strings. */
735: #define PREDEFS_MAX 38
736: static const struct predef predefs[PREDEFS_MAX] = {
737: #include "predefs.in"
738: };
739:
1.155 kristaps 740: /* See roffhash_find() */
1.85 kristaps 741: #define ROFF_HASH(p) (p[0] - ASCII_LO)
742:
1.178 schwarze 743: static int roffit_lines; /* number of lines to delay */
744: static char *roffit_macro; /* nil-terminated macro line */
745:
1.207 schwarze 746:
1.266 schwarze 747: /* --- request table ------------------------------------------------------ */
748:
1.85 kristaps 749: static void
1.155 kristaps 750: roffhash_init(void)
1.85 kristaps 751: {
752: struct roffmac *n;
753: int buc, i;
754:
1.106 kristaps 755: for (i = 0; i < (int)ROFF_USERDEF; i++) {
1.85 kristaps 756: assert(roffs[i].name[0] >= ASCII_LO);
757: assert(roffs[i].name[0] <= ASCII_HI);
758:
759: buc = ROFF_HASH(roffs[i].name);
760:
761: if (NULL != (n = hash[buc])) {
762: for ( ; n->next; n = n->next)
763: /* Do nothing. */ ;
764: n->next = &roffs[i];
765: } else
766: hash[buc] = &roffs[i];
767: }
768: }
769:
1.67 kristaps 770: /*
771: * Look up a roff token by its name. Returns ROFF_MAX if no macro by
772: * the nil-terminated string name could be found.
773: */
774: static enum rofft
1.155 kristaps 775: roffhash_find(const char *p, size_t s)
1.67 kristaps 776: {
1.85 kristaps 777: int buc;
778: struct roffmac *n;
1.67 kristaps 779:
1.85 kristaps 780: /*
781: * libroff has an extremely simple hashtable, for the time
782: * being, which simply keys on the first character, which must
783: * be printable, then walks a chain. It works well enough until
784: * optimised.
785: */
786:
787: if (p[0] < ASCII_LO || p[0] > ASCII_HI)
788: return(ROFF_MAX);
789:
790: buc = ROFF_HASH(p);
791:
792: if (NULL == (n = hash[buc]))
793: return(ROFF_MAX);
794: for ( ; n; n = n->next)
1.106 kristaps 795: if (0 == strncmp(n->name, p, s) && '\0' == n->name[(int)s])
1.85 kristaps 796: return((enum rofft)(n - roffs));
1.67 kristaps 797:
798: return(ROFF_MAX);
799: }
800:
1.266 schwarze 801: /* --- stack of request blocks -------------------------------------------- */
802:
1.67 kristaps 803: /*
804: * Pop the current node off of the stack of roff instructions currently
805: * pending.
806: */
807: static void
808: roffnode_pop(struct roff *r)
809: {
810: struct roffnode *p;
811:
1.75 kristaps 812: assert(r->last);
1.207 schwarze 813: p = r->last;
1.82 kristaps 814:
1.75 kristaps 815: r->last = r->last->parent;
1.106 kristaps 816: free(p->name);
817: free(p->end);
1.67 kristaps 818: free(p);
819: }
820:
821: /*
822: * Push a roff node onto the instruction stack. This must later be
823: * removed with roffnode_pop().
824: */
1.98 schwarze 825: static void
1.106 kristaps 826: roffnode_push(struct roff *r, enum rofft tok, const char *name,
827: int line, int col)
1.67 kristaps 828: {
829: struct roffnode *p;
830:
1.98 schwarze 831: p = mandoc_calloc(1, sizeof(struct roffnode));
1.67 kristaps 832: p->tok = tok;
1.106 kristaps 833: if (name)
834: p->name = mandoc_strdup(name);
1.67 kristaps 835: p->parent = r->last;
836: p->line = line;
837: p->col = col;
1.198 schwarze 838: p->rule = p->parent ? p->parent->rule : 0;
1.67 kristaps 839:
840: r->last = p;
841: }
842:
1.266 schwarze 843: /* --- roff parser state data management ---------------------------------- */
844:
1.67 kristaps 845: static void
846: roff_free1(struct roff *r)
847: {
1.176 schwarze 848: struct tbl_node *tbl;
1.125 kristaps 849: struct eqn_node *e;
1.167 kristaps 850: int i;
1.67 kristaps 851:
1.176 schwarze 852: while (NULL != (tbl = r->first_tbl)) {
853: r->first_tbl = tbl->next;
854: tbl_free(tbl);
1.109 kristaps 855: }
1.113 kristaps 856: r->first_tbl = r->last_tbl = r->tbl = NULL;
857:
1.125 kristaps 858: while (NULL != (e = r->first_eqn)) {
859: r->first_eqn = e->next;
860: eqn_free(e);
861: }
862: r->first_eqn = r->last_eqn = r->eqn = NULL;
863:
1.67 kristaps 864: while (r->last)
865: roffnode_pop(r);
1.109 kristaps 866:
1.223 schwarze 867: free (r->rstack);
868: r->rstack = NULL;
869: r->rstacksz = 0;
870: r->rstackpos = -1;
871:
872: roff_freereg(r->regtab);
873: r->regtab = NULL;
874:
1.167 kristaps 875: roff_freestr(r->strtab);
876: roff_freestr(r->xmbtab);
877: r->strtab = r->xmbtab = NULL;
878:
879: if (r->xtab)
880: for (i = 0; i < 128; i++)
881: free(r->xtab[i].p);
882: free(r->xtab);
883: r->xtab = NULL;
1.67 kristaps 884: }
885:
886: void
887: roff_reset(struct roff *r)
888: {
889:
890: roff_free1(r);
1.227 schwarze 891: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.174 kristaps 892: r->control = 0;
1.67 kristaps 893: }
894:
895: void
896: roff_free(struct roff *r)
897: {
898:
899: roff_free1(r);
900: free(r);
901: }
902:
903: struct roff *
1.237 schwarze 904: roff_alloc(struct mparse *parse, const struct mchars *mchars, int options)
1.67 kristaps 905: {
906: struct roff *r;
907:
1.98 schwarze 908: r = mandoc_calloc(1, sizeof(struct roff));
1.128 kristaps 909: r->parse = parse;
1.237 schwarze 910: r->mchars = mchars;
1.199 schwarze 911: r->options = options;
1.227 schwarze 912: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.82 kristaps 913: r->rstackpos = -1;
1.207 schwarze 914:
1.155 kristaps 915: roffhash_init();
1.141 kristaps 916:
1.67 kristaps 917: return(r);
1.265 schwarze 918: }
919:
1.266 schwarze 920: /* --- syntax tree state data management ---------------------------------- */
921:
1.265 schwarze 922: static void
923: roff_man_free1(struct roff_man *man)
924: {
925:
1.266 schwarze 926: if (man->first != NULL)
927: roff_node_delete(man, man->first);
1.265 schwarze 928: free(man->meta.msec);
929: free(man->meta.vol);
930: free(man->meta.os);
931: free(man->meta.arch);
932: free(man->meta.title);
933: free(man->meta.name);
934: free(man->meta.date);
935: }
936:
937: static void
938: roff_man_alloc1(struct roff_man *man)
939: {
940:
941: memset(&man->meta, 0, sizeof(man->meta));
942: man->first = mandoc_calloc(1, sizeof(*man->first));
943: man->first->type = ROFFT_ROOT;
944: man->last = man->first;
945: man->last_es = NULL;
946: man->flags = 0;
947: man->macroset = MACROSET_NONE;
948: man->lastsec = man->lastnamed = SEC_NONE;
949: man->next = ROFF_NEXT_CHILD;
950: }
951:
952: void
953: roff_man_reset(struct roff_man *man)
954: {
955:
956: roff_man_free1(man);
957: roff_man_alloc1(man);
958: }
959:
960: void
961: roff_man_free(struct roff_man *man)
962: {
963:
964: roff_man_free1(man);
965: free(man);
966: }
967:
968: struct roff_man *
969: roff_man_alloc(struct roff *roff, struct mparse *parse,
970: const char *defos, int quick)
971: {
972: struct roff_man *man;
973:
974: man = mandoc_calloc(1, sizeof(*man));
975: man->parse = parse;
976: man->roff = roff;
977: man->defos = defos;
978: man->quick = quick;
979: roff_man_alloc1(man);
980: return(man);
1.67 kristaps 981: }
982:
1.266 schwarze 983: /* --- syntax tree handling ----------------------------------------------- */
984:
985: struct roff_node *
986: roff_node_alloc(struct roff_man *man, int line, int pos,
987: enum roff_type type, int tok)
988: {
989: struct roff_node *n;
990:
991: n = mandoc_calloc(1, sizeof(*n));
992: n->line = line;
993: n->pos = pos;
994: n->tok = tok;
995: n->type = type;
996: n->sec = man->lastsec;
997:
998: if (man->flags & MDOC_SYNOPSIS)
999: n->flags |= MDOC_SYNPRETTY;
1000: else
1001: n->flags &= ~MDOC_SYNPRETTY;
1002: if (man->flags & MDOC_NEWLINE)
1003: n->flags |= MDOC_LINE;
1004: man->flags &= ~MDOC_NEWLINE;
1005:
1006: return(n);
1007: }
1008:
1009: void
1010: roff_node_append(struct roff_man *man, struct roff_node *n)
1011: {
1012:
1013: switch (man->next) {
1014: case ROFF_NEXT_SIBLING:
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;
1022: break;
1023: default:
1024: abort();
1025: /* NOTREACHED */
1026: }
1027: n->parent->nchild++;
1.270 schwarze 1028: n->parent->last = n;
1.266 schwarze 1029:
1030: /*
1031: * Copy over the normalised-data pointer of our parent. Not
1032: * everybody has one, but copying a null pointer is fine.
1033: */
1034:
1035: switch (n->type) {
1036: case ROFFT_BODY:
1037: if (n->end != ENDBODY_NOT)
1038: break;
1039: /* FALLTHROUGH */
1040: case ROFFT_TAIL:
1041: /* FALLTHROUGH */
1042: case ROFFT_HEAD:
1043: n->norm = n->parent->norm;
1044: break;
1045: default:
1046: break;
1047: }
1048:
1049: if (man->macroset == MACROSET_MDOC)
1050: mdoc_valid_pre(man, n);
1051:
1052: switch (n->type) {
1053: case ROFFT_HEAD:
1054: assert(n->parent->type == ROFFT_BLOCK);
1055: n->parent->head = n;
1056: break;
1057: case ROFFT_BODY:
1058: if (n->end)
1059: break;
1060: assert(n->parent->type == ROFFT_BLOCK);
1061: n->parent->body = n;
1062: break;
1063: case ROFFT_TAIL:
1064: assert(n->parent->type == ROFFT_BLOCK);
1065: n->parent->tail = n;
1066: break;
1067: default:
1068: break;
1069: }
1070: man->last = n;
1071: }
1072:
1.267 schwarze 1073: void
1074: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
1075: {
1076: struct roff_node *n;
1077:
1078: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
1079: n->string = roff_strdup(man->roff, word);
1080: roff_node_append(man, n);
1081: if (man->macroset == MACROSET_MDOC)
1082: mdoc_valid_post(man);
1083: else
1084: man_valid_post(man);
1085: man->next = ROFF_NEXT_SIBLING;
1086: }
1087:
1088: void
1089: roff_word_append(struct roff_man *man, const char *word)
1090: {
1091: struct roff_node *n;
1092: char *addstr, *newstr;
1093:
1094: n = man->last;
1095: addstr = roff_strdup(man->roff, word);
1096: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
1097: free(addstr);
1098: free(n->string);
1099: n->string = newstr;
1100: man->next = ROFF_NEXT_SIBLING;
1.268 schwarze 1101: }
1102:
1103: void
1104: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
1105: {
1106: struct roff_node *n;
1107:
1108: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
1109: roff_node_append(man, n);
1110: man->next = ROFF_NEXT_CHILD;
1111: }
1112:
1113: struct roff_node *
1114: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
1115: {
1116: struct roff_node *n;
1117:
1118: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
1119: roff_node_append(man, n);
1120: man->next = ROFF_NEXT_CHILD;
1121: return(n);
1.267 schwarze 1122: }
1123:
1.266 schwarze 1124: struct roff_node *
1125: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
1126: {
1127: struct roff_node *n;
1128:
1129: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
1130: roff_node_append(man, n);
1131: man->next = ROFF_NEXT_CHILD;
1132: return(n);
1133: }
1134:
1135: struct roff_node *
1136: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1137: {
1138: struct roff_node *n;
1139:
1140: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1141: roff_node_append(man, n);
1142: man->next = ROFF_NEXT_CHILD;
1143: return(n);
1.267 schwarze 1144: }
1145:
1146: void
1147: roff_addeqn(struct roff_man *man, const struct eqn *eqn)
1148: {
1149: struct roff_node *n;
1150:
1151: n = roff_node_alloc(man, eqn->ln, eqn->pos, ROFFT_EQN, TOKEN_NONE);
1152: n->eqn = eqn;
1153: if (eqn->ln > man->last->line)
1154: n->flags |= MDOC_LINE;
1155: roff_node_append(man, n);
1156: man->next = ROFF_NEXT_SIBLING;
1157: }
1158:
1159: void
1160: roff_addtbl(struct roff_man *man, const struct tbl_span *tbl)
1161: {
1162: struct roff_node *n;
1163:
1164: if (man->macroset == MACROSET_MAN)
1165: man_breakscope(man, TOKEN_NONE);
1166: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
1167: n->span = tbl;
1168: roff_node_append(man, n);
1169: if (man->macroset == MACROSET_MDOC)
1170: mdoc_valid_post(man);
1171: else
1172: man_valid_post(man);
1173: man->next = ROFF_NEXT_SIBLING;
1.266 schwarze 1174: }
1175:
1176: void
1177: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1178: {
1179:
1180: /* Adjust siblings. */
1181:
1182: if (n->prev)
1183: n->prev->next = n->next;
1184: if (n->next)
1185: n->next->prev = n->prev;
1186:
1187: /* Adjust parent. */
1188:
1189: if (n->parent != NULL) {
1190: n->parent->nchild--;
1191: if (n->parent->child == n)
1192: n->parent->child = n->next;
1193: if (n->parent->last == n)
1194: n->parent->last = n->prev;
1195: }
1196:
1197: /* Adjust parse point. */
1198:
1199: if (man == NULL)
1200: return;
1201: if (man->last == n) {
1202: if (n->prev == NULL) {
1203: man->last = n->parent;
1204: man->next = ROFF_NEXT_CHILD;
1205: } else {
1206: man->last = n->prev;
1207: man->next = ROFF_NEXT_SIBLING;
1208: }
1209: }
1210: if (man->first == n)
1211: man->first = NULL;
1212: }
1213:
1214: void
1215: roff_node_free(struct roff_node *n)
1216: {
1217:
1218: if (n->args != NULL)
1219: mdoc_argv_free(n->args);
1220: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1221: free(n->norm);
1222: free(n->string);
1223: free(n);
1224: }
1225:
1226: void
1227: roff_node_delete(struct roff_man *man, struct roff_node *n)
1228: {
1229:
1230: while (n->child != NULL)
1231: roff_node_delete(man, n->child);
1232: assert(n->nchild == 0);
1233: roff_node_unlink(man, n);
1234: roff_node_free(n);
1.269 schwarze 1235: }
1236:
1237: void
1238: deroff(char **dest, const struct roff_node *n)
1239: {
1240: char *cp;
1241: size_t sz;
1242:
1243: if (n->type != ROFFT_TEXT) {
1244: for (n = n->child; n != NULL; n = n->next)
1245: deroff(dest, n);
1246: return;
1247: }
1248:
1249: /* Skip leading whitespace and escape sequences. */
1250:
1251: cp = n->string;
1252: while (*cp != '\0') {
1253: if ('\\' == *cp) {
1254: cp++;
1255: mandoc_escape((const char **)&cp, NULL, NULL);
1256: } else if (isspace((unsigned char)*cp))
1257: cp++;
1258: else
1259: break;
1260: }
1261:
1262: /* Skip trailing whitespace. */
1263:
1264: for (sz = strlen(cp); sz; sz--)
1265: if ( ! isspace((unsigned char)cp[sz-1]))
1266: break;
1267:
1268: /* Skip empty strings. */
1269:
1270: if (sz == 0)
1271: return;
1272:
1273: if (*dest == NULL) {
1274: *dest = mandoc_strndup(cp, sz);
1275: return;
1276: }
1277:
1278: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1279: free(*dest);
1280: *dest = cp;
1.266 schwarze 1281: }
1282:
1283: /* --- main functions of the roff parser ---------------------------------- */
1284:
1.94 kristaps 1285: /*
1.206 schwarze 1286: * In the current line, expand escape sequences that tend to get
1287: * used in numerical expressions and conditional requests.
1288: * Also check the syntax of the remaining escape sequences.
1.154 kristaps 1289: */
1.172 schwarze 1290: static enum rofferr
1.238 schwarze 1291: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.94 kristaps 1292: {
1.208 schwarze 1293: char ubuf[24]; /* buffer to print the number */
1.205 schwarze 1294: const char *start; /* start of the string to process */
1.209 schwarze 1295: char *stesc; /* start of an escape sequence ('\\') */
1.108 schwarze 1296: const char *stnam; /* start of the name, after "[(*" */
1297: const char *cp; /* end of the name, e.g. before ']' */
1298: const char *res; /* the string to be substituted */
1.238 schwarze 1299: char *nbuf; /* new buffer to copy buf->buf to */
1.181 schwarze 1300: size_t maxl; /* expected length of the escape name */
1301: size_t naml; /* actual length of the escape name */
1.237 schwarze 1302: enum mandoc_esc esc; /* type of the escape sequence */
1303: int inaml; /* length returned from mandoc_escape() */
1.181 schwarze 1304: int expand_count; /* to avoid infinite loops */
1.206 schwarze 1305: int npos; /* position in numeric expression */
1.218 schwarze 1306: int arg_complete; /* argument not interrupted by eol */
1.206 schwarze 1307: char term; /* character terminating the escape */
1.94 kristaps 1308:
1.170 schwarze 1309: expand_count = 0;
1.238 schwarze 1310: start = buf->buf + pos;
1.205 schwarze 1311: stesc = strchr(start, '\0') - 1;
1312: while (stesc-- > start) {
1.170 schwarze 1313:
1.205 schwarze 1314: /* Search backwards for the next backslash. */
1315:
1.238 schwarze 1316: if (*stesc != '\\')
1.205 schwarze 1317: continue;
1318:
1319: /* If it is escaped, skip it. */
1320:
1321: for (cp = stesc - 1; cp >= start; cp--)
1.238 schwarze 1322: if (*cp != '\\')
1.205 schwarze 1323: break;
1324:
1.238 schwarze 1325: if ((stesc - cp) % 2 == 0) {
1.209 schwarze 1326: stesc = (char *)cp;
1.205 schwarze 1327: continue;
1328: }
1.108 schwarze 1329:
1.206 schwarze 1330: /* Decide whether to expand or to check only. */
1.108 schwarze 1331:
1.206 schwarze 1332: term = '\0';
1.205 schwarze 1333: cp = stesc + 1;
1.181 schwarze 1334: switch (*cp) {
1.207 schwarze 1335: case '*':
1.181 schwarze 1336: res = NULL;
1337: break;
1.207 schwarze 1338: case 'B':
1.206 schwarze 1339: /* FALLTHROUGH */
1.207 schwarze 1340: case 'w':
1.206 schwarze 1341: term = cp[1];
1342: /* FALLTHROUGH */
1.207 schwarze 1343: case 'n':
1.181 schwarze 1344: res = ubuf;
1345: break;
1346: default:
1.237 schwarze 1347: esc = mandoc_escape(&cp, &stnam, &inaml);
1348: if (esc == ESCAPE_ERROR ||
1349: (esc == ESCAPE_SPECIAL &&
1350: mchars_spec2cp(r->mchars, stnam, inaml) < 0))
1.219 schwarze 1351: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.238 schwarze 1352: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1353: "%.*s", (int)(cp - stesc), stesc);
1.205 schwarze 1354: continue;
1.152 kristaps 1355: }
1356:
1.205 schwarze 1357: if (EXPAND_LIMIT < ++expand_count) {
1358: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.238 schwarze 1359: ln, (int)(stesc - buf->buf), NULL);
1.205 schwarze 1360: return(ROFF_IGN);
1361: }
1.108 schwarze 1362:
1363: /*
1364: * The third character decides the length
1.181 schwarze 1365: * of the name of the string or register.
1.108 schwarze 1366: * Save a pointer to the name.
1367: */
1368:
1.238 schwarze 1369: if (term == '\0') {
1.206 schwarze 1370: switch (*++cp) {
1.207 schwarze 1371: case '\0':
1.206 schwarze 1372: maxl = 0;
1373: break;
1.207 schwarze 1374: case '(':
1.206 schwarze 1375: cp++;
1376: maxl = 2;
1377: break;
1.207 schwarze 1378: case '[':
1.206 schwarze 1379: cp++;
1380: term = ']';
1381: maxl = 0;
1382: break;
1383: default:
1384: maxl = 1;
1385: break;
1386: }
1387: } else {
1388: cp += 2;
1.94 kristaps 1389: maxl = 0;
1390: }
1.108 schwarze 1391: stnam = cp;
1.94 kristaps 1392:
1.108 schwarze 1393: /* Advance to the end of the name. */
1.94 kristaps 1394:
1.253 schwarze 1395: naml = 0;
1.218 schwarze 1396: arg_complete = 1;
1.253 schwarze 1397: while (maxl == 0 || naml < maxl) {
1.238 schwarze 1398: if (*cp == '\0') {
1.219 schwarze 1399: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 1400: ln, (int)(stesc - buf->buf), stesc);
1.218 schwarze 1401: arg_complete = 0;
1.206 schwarze 1402: break;
1.153 kristaps 1403: }
1.238 schwarze 1404: if (maxl == 0 && *cp == term) {
1.206 schwarze 1405: cp++;
1.253 schwarze 1406: break;
1407: }
1408: if (*cp++ != '\\' || stesc[1] != 'w') {
1409: naml++;
1410: continue;
1411: }
1412: switch (mandoc_escape(&cp, NULL, NULL)) {
1413: case ESCAPE_SPECIAL:
1414: /* FALLTHROUGH */
1415: case ESCAPE_UNICODE:
1416: /* FALLTHROUGH */
1417: case ESCAPE_NUMBERED:
1418: /* FALLTHROUGH */
1419: case ESCAPE_OVERSTRIKE:
1420: naml++;
1421: break;
1422: default:
1.94 kristaps 1423: break;
1.206 schwarze 1424: }
1.94 kristaps 1425: }
1426:
1.108 schwarze 1427: /*
1428: * Retrieve the replacement string; if it is
1429: * undefined, resume searching for escapes.
1430: */
1431:
1.206 schwarze 1432: switch (stesc[1]) {
1.207 schwarze 1433: case '*':
1.218 schwarze 1434: if (arg_complete)
1435: res = roff_getstrn(r, stnam, naml);
1.206 schwarze 1436: break;
1.207 schwarze 1437: case 'B':
1.206 schwarze 1438: npos = 0;
1.218 schwarze 1439: ubuf[0] = arg_complete &&
1.261 schwarze 1440: roff_evalnum(r, ln, stnam, &npos,
1441: NULL, ROFFNUM_SCALE) &&
1.218 schwarze 1442: stnam + npos + 1 == cp ? '1' : '0';
1.206 schwarze 1443: ubuf[1] = '\0';
1444: break;
1.207 schwarze 1445: case 'n':
1.218 schwarze 1446: if (arg_complete)
1447: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1448: roff_getregn(r, stnam, naml));
1449: else
1450: ubuf[0] = '\0';
1.206 schwarze 1451: break;
1.207 schwarze 1452: case 'w':
1.218 schwarze 1453: /* use even incomplete args */
1.208 schwarze 1454: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.206 schwarze 1455: 24 * (int)naml);
1456: break;
1457: }
1.94 kristaps 1458:
1.238 schwarze 1459: if (res == NULL) {
1.219 schwarze 1460: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1461: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1462: "%.*s", (int)naml, stnam);
1.142 kristaps 1463: res = "";
1.246 schwarze 1464: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1465: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1466: ln, (int)(stesc - buf->buf), NULL);
1467: return(ROFF_IGN);
1.94 kristaps 1468: }
1469:
1.108 schwarze 1470: /* Replace the escape sequence by the string. */
1471:
1.209 schwarze 1472: *stesc = '\0';
1.238 schwarze 1473: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1474: buf->buf, res, cp) + 1;
1.94 kristaps 1475:
1.205 schwarze 1476: /* Prepare for the next replacement. */
1.94 kristaps 1477:
1.205 schwarze 1478: start = nbuf + pos;
1.238 schwarze 1479: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1480: free(buf->buf);
1481: buf->buf = nbuf;
1.154 kristaps 1482: }
1.172 schwarze 1483: return(ROFF_CONT);
1.154 kristaps 1484: }
1485:
1486: /*
1.275 ! schwarze 1487: * Process text streams.
1.154 kristaps 1488: */
1489: static enum rofferr
1.238 schwarze 1490: roff_parsetext(struct buf *buf, int pos, int *offs)
1.154 kristaps 1491: {
1492: size_t sz;
1493: const char *start;
1.178 schwarze 1494: char *p;
1495: int isz;
1.154 kristaps 1496: enum mandoc_esc esc;
1497:
1.275 ! schwarze 1498: /* Spring the input line trap. */
! 1499:
! 1500: if (roffit_lines == 1) {
! 1501: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
! 1502: free(buf->buf);
! 1503: buf->buf = p;
! 1504: buf->sz = isz + 1;
! 1505: *offs = 0;
! 1506: free(roffit_macro);
! 1507: roffit_lines = 0;
! 1508: return(ROFF_REPARSE);
! 1509: } else if (roffit_lines > 1)
! 1510: --roffit_lines;
! 1511:
! 1512: /* Convert all breakable hyphens into ASCII_HYPH. */
! 1513:
1.238 schwarze 1514: start = p = buf->buf + pos;
1.154 kristaps 1515:
1.238 schwarze 1516: while (*p != '\0') {
1.154 kristaps 1517: sz = strcspn(p, "-\\");
1518: p += sz;
1519:
1.238 schwarze 1520: if (*p == '\0')
1.159 kristaps 1521: break;
1522:
1.238 schwarze 1523: if (*p == '\\') {
1.154 kristaps 1524: /* Skip over escapes. */
1525: p++;
1.189 schwarze 1526: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.238 schwarze 1527: if (esc == ESCAPE_ERROR)
1.154 kristaps 1528: break;
1.264 schwarze 1529: while (*p == '-')
1530: p++;
1.155 kristaps 1531: continue;
1.159 kristaps 1532: } else if (p == start) {
1.158 kristaps 1533: p++;
1.155 kristaps 1534: continue;
1.158 kristaps 1535: }
1.155 kristaps 1536:
1.171 schwarze 1537: if (isalpha((unsigned char)p[-1]) &&
1538: isalpha((unsigned char)p[1]))
1.155 kristaps 1539: *p = ASCII_HYPH;
1540: p++;
1.94 kristaps 1541: }
1.154 kristaps 1542: return(ROFF_CONT);
1.94 kristaps 1543: }
1544:
1.67 kristaps 1545: enum rofferr
1.238 schwarze 1546: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.67 kristaps 1547: {
1548: enum rofft t;
1.109 kristaps 1549: enum rofferr e;
1.238 schwarze 1550: int pos; /* parse point */
1.243 schwarze 1551: int spos; /* saved parse point for messages */
1.238 schwarze 1552: int ppos; /* original offset in buf->buf */
1553: int ctl; /* macro line (boolean) */
1554:
1555: ppos = pos = *offs;
1.79 kristaps 1556:
1.230 schwarze 1557: /* Handle in-line equation delimiters. */
1558:
1.236 schwarze 1559: if (r->tbl == NULL &&
1560: r->last_eqn != NULL && r->last_eqn->delim &&
1.230 schwarze 1561: (r->eqn == NULL || r->eqn_inline)) {
1.238 schwarze 1562: e = roff_eqndelim(r, buf, pos);
1.230 schwarze 1563: if (e == ROFF_REPARSE)
1564: return(e);
1565: assert(e == ROFF_CONT);
1566: }
1567:
1568: /* Expand some escape sequences. */
1.94 kristaps 1569:
1.238 schwarze 1570: e = roff_res(r, buf, ln, pos);
1571: if (e == ROFF_IGN)
1.172 schwarze 1572: return(e);
1.238 schwarze 1573: assert(e == ROFF_CONT);
1.94 kristaps 1574:
1.238 schwarze 1575: ctl = roff_getcontrol(r, buf->buf, &pos);
1.130 kristaps 1576:
1.94 kristaps 1577: /*
1.79 kristaps 1578: * First, if a scope is open and we're not a macro, pass the
1.252 schwarze 1579: * text through the macro's filter.
1580: * Equations process all content themselves.
1581: * Tables process almost all content themselves, but we want
1582: * to warn about macros before passing it there.
1.79 kristaps 1583: */
1.74 kristaps 1584:
1.252 schwarze 1585: if (r->last != NULL && ! ctl) {
1.78 kristaps 1586: t = r->last->tok;
1587: assert(roffs[t].text);
1.238 schwarze 1588: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1589: assert(e == ROFF_IGN || e == ROFF_CONT);
1590: if (e != ROFF_CONT)
1.125 kristaps 1591: return(e);
1.182 schwarze 1592: }
1.252 schwarze 1593: if (r->eqn != NULL)
1.238 schwarze 1594: return(eqn_read(&r->eqn, ln, buf->buf, ppos, offs));
1.252 schwarze 1595: if (r->tbl != NULL && ( ! ctl || buf->buf[pos] == '\0'))
1.259 schwarze 1596: return(tbl_read(r->tbl, ln, buf->buf, ppos));
1.252 schwarze 1597: if ( ! ctl)
1.238 schwarze 1598: return(roff_parsetext(buf, pos, offs));
1.228 schwarze 1599:
1600: /* Skip empty request lines. */
1601:
1.238 schwarze 1602: if (buf->buf[pos] == '"') {
1.228 schwarze 1603: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1604: ln, pos, NULL);
1605: return(ROFF_IGN);
1.238 schwarze 1606: } else if (buf->buf[pos] == '\0')
1.228 schwarze 1607: return(ROFF_IGN);
1.67 kristaps 1608:
1.79 kristaps 1609: /*
1610: * If a scope is open, go to the child handler for that macro,
1611: * as it may want to preprocess before doing anything with it.
1.125 kristaps 1612: * Don't do so if an equation is open.
1.79 kristaps 1613: */
1.78 kristaps 1614:
1.79 kristaps 1615: if (r->last) {
1616: t = r->last->tok;
1617: assert(roffs[t].sub);
1.238 schwarze 1618: return((*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs));
1.79 kristaps 1619: }
1.78 kristaps 1620:
1.243 schwarze 1621: /* No scope is open. This is a new request or macro. */
1622:
1623: spos = pos;
1624: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1625:
1626: /* Tables ignore most macros. */
1627:
1628: if (r->tbl != NULL && (t == ROFF_MAX || t == ROFF_TS)) {
1629: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1630: ln, pos, buf->buf + spos);
1.257 schwarze 1631: if (t == ROFF_TS)
1632: return(ROFF_IGN);
1633: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1634: pos++;
1635: while (buf->buf[pos] != '\0' && buf->buf[pos] == ' ')
1636: pos++;
1637: return(tbl_read(r->tbl, ln, buf->buf, pos));
1.243 schwarze 1638: }
1639:
1.79 kristaps 1640: /*
1.243 schwarze 1641: * This is neither a roff request nor a user-defined macro.
1642: * Let the standard macro set parsers handle it.
1.79 kristaps 1643: */
1.67 kristaps 1644:
1.243 schwarze 1645: if (t == ROFF_MAX)
1.79 kristaps 1646: return(ROFF_CONT);
1.243 schwarze 1647:
1648: /* Execute a roff request or a user defined macro. */
1.67 kristaps 1649:
1.75 kristaps 1650: assert(roffs[t].proc);
1.238 schwarze 1651: return((*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs));
1.74 kristaps 1652: }
1653:
1.117 kristaps 1654: void
1.74 kristaps 1655: roff_endparse(struct roff *r)
1656: {
1657:
1.110 kristaps 1658: if (r->last)
1.221 schwarze 1659: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1660: r->last->line, r->last->col,
1661: roffs[r->last->tok].name);
1.117 kristaps 1662:
1.125 kristaps 1663: if (r->eqn) {
1.221 schwarze 1664: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1665: r->eqn->eqn.ln, r->eqn->eqn.pos, "EQ");
1.151 kristaps 1666: eqn_end(&r->eqn);
1.125 kristaps 1667: }
1668:
1.117 kristaps 1669: if (r->tbl) {
1.221 schwarze 1670: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1671: r->tbl->line, r->tbl->pos, "TS");
1.151 kristaps 1672: tbl_end(&r->tbl);
1.117 kristaps 1673: }
1.67 kristaps 1674: }
1675:
1676: /*
1677: * Parse a roff node's type from the input buffer. This must be in the
1678: * form of ".foo xxx" in the usual way.
1679: */
1680: static enum rofft
1.214 schwarze 1681: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.67 kristaps 1682: {
1.214 schwarze 1683: char *cp;
1.106 kristaps 1684: const char *mac;
1685: size_t maclen;
1.67 kristaps 1686: enum rofft t;
1687:
1.214 schwarze 1688: cp = buf + *pos;
1689:
1690: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.67 kristaps 1691: return(ROFF_MAX);
1692:
1.214 schwarze 1693: mac = cp;
1694: maclen = roff_getname(r, &cp, ln, ppos);
1.67 kristaps 1695:
1.106 kristaps 1696: t = (r->current_string = roff_getstrn(r, mac, maclen))
1.155 kristaps 1697: ? ROFF_USERDEF : roffhash_find(mac, maclen);
1.67 kristaps 1698:
1.214 schwarze 1699: if (ROFF_MAX != t)
1700: *pos = cp - buf;
1.67 kristaps 1701:
1702: return(t);
1703: }
1704:
1.266 schwarze 1705: /* --- handling of request blocks ----------------------------------------- */
1706:
1.67 kristaps 1707: static enum rofferr
1.76 kristaps 1708: roff_cblock(ROFF_ARGS)
1.67 kristaps 1709: {
1710:
1.79 kristaps 1711: /*
1712: * A block-close `..' should only be invoked as a child of an
1713: * ignore macro, otherwise raise a warning and just ignore it.
1714: */
1715:
1.238 schwarze 1716: if (r->last == NULL) {
1.221 schwarze 1717: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1718: ln, ppos, "..");
1.76 kristaps 1719: return(ROFF_IGN);
1720: }
1.67 kristaps 1721:
1.81 kristaps 1722: switch (r->last->tok) {
1.207 schwarze 1723: case ROFF_am:
1.220 schwarze 1724: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.81 kristaps 1725: /* FALLTHROUGH */
1.207 schwarze 1726: case ROFF_ami:
1.81 kristaps 1727: /* FALLTHROUGH */
1.207 schwarze 1728: case ROFF_de:
1.108 schwarze 1729: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.81 kristaps 1730: /* FALLTHROUGH */
1.207 schwarze 1731: case ROFF_dei:
1.81 kristaps 1732: /* FALLTHROUGH */
1.207 schwarze 1733: case ROFF_ig:
1.81 kristaps 1734: break;
1735: default:
1.221 schwarze 1736: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1737: ln, ppos, "..");
1.67 kristaps 1738: return(ROFF_IGN);
1.76 kristaps 1739: }
1.67 kristaps 1740:
1.238 schwarze 1741: if (buf->buf[pos] != '\0')
1.217 schwarze 1742: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 1743: ".. %s", buf->buf + pos);
1.71 kristaps 1744:
1745: roffnode_pop(r);
1.76 kristaps 1746: roffnode_cleanscope(r);
1747: return(ROFF_IGN);
1.71 kristaps 1748:
1.67 kristaps 1749: }
1750:
1.76 kristaps 1751: static void
1752: roffnode_cleanscope(struct roff *r)
1.67 kristaps 1753: {
1754:
1.76 kristaps 1755: while (r->last) {
1.173 schwarze 1756: if (--r->last->endspan != 0)
1.76 kristaps 1757: break;
1758: roffnode_pop(r);
1759: }
1.67 kristaps 1760: }
1761:
1.195 schwarze 1762: static void
1763: roff_ccond(struct roff *r, int ln, int ppos)
1.74 kristaps 1764: {
1765:
1.76 kristaps 1766: if (NULL == r->last) {
1.221 schwarze 1767: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1768: ln, ppos, "\\}");
1.195 schwarze 1769: return;
1.76 kristaps 1770: }
1771:
1.82 kristaps 1772: switch (r->last->tok) {
1.207 schwarze 1773: case ROFF_el:
1.82 kristaps 1774: /* FALLTHROUGH */
1.207 schwarze 1775: case ROFF_ie:
1.82 kristaps 1776: /* FALLTHROUGH */
1.207 schwarze 1777: case ROFF_if:
1.82 kristaps 1778: break;
1779: default:
1.221 schwarze 1780: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1781: ln, ppos, "\\}");
1.195 schwarze 1782: return;
1.75 kristaps 1783: }
1784:
1.76 kristaps 1785: if (r->last->endspan > -1) {
1.221 schwarze 1786: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1787: ln, ppos, "\\}");
1.195 schwarze 1788: return;
1.76 kristaps 1789: }
1790:
1.75 kristaps 1791: roffnode_pop(r);
1.76 kristaps 1792: roffnode_cleanscope(r);
1.195 schwarze 1793: return;
1.76 kristaps 1794: }
1795:
1796: static enum rofferr
1.80 kristaps 1797: roff_block(ROFF_ARGS)
1.76 kristaps 1798: {
1.220 schwarze 1799: const char *name;
1800: char *iname, *cp;
1.213 schwarze 1801: size_t namesz;
1.106 kristaps 1802:
1.220 schwarze 1803: /* Ignore groff compatibility mode for now. */
1.76 kristaps 1804:
1.238 schwarze 1805: if (tok == ROFF_de1)
1.220 schwarze 1806: tok = ROFF_de;
1.251 schwarze 1807: else if (tok == ROFF_dei1)
1808: tok = ROFF_dei;
1.238 schwarze 1809: else if (tok == ROFF_am1)
1.220 schwarze 1810: tok = ROFF_am;
1.251 schwarze 1811: else if (tok == ROFF_ami1)
1812: tok = ROFF_ami;
1.220 schwarze 1813:
1814: /* Parse the macro name argument. */
1815:
1.238 schwarze 1816: cp = buf->buf + pos;
1817: if (tok == ROFF_ig) {
1.220 schwarze 1818: iname = NULL;
1819: namesz = 0;
1820: } else {
1821: iname = cp;
1822: namesz = roff_getname(r, &cp, ln, ppos);
1823: iname[namesz] = '\0';
1824: }
1.107 kristaps 1825:
1.220 schwarze 1826: /* Resolve the macro name argument if it is indirect. */
1.107 kristaps 1827:
1.238 schwarze 1828: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1829: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.220 schwarze 1830: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1831: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1832: "%.*s", (int)namesz, iname);
1833: namesz = 0;
1834: } else
1835: namesz = strlen(name);
1836: } else
1837: name = iname;
1.107 kristaps 1838:
1.238 schwarze 1839: if (namesz == 0 && tok != ROFF_ig) {
1.220 schwarze 1840: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1841: ln, ppos, roffs[tok].name);
1842: return(ROFF_IGN);
1843: }
1.80 kristaps 1844:
1.106 kristaps 1845: roffnode_push(r, tok, name, ln, ppos);
1846:
1847: /*
1848: * At the beginning of a `de' macro, clear the existing string
1849: * with the same name, if there is one. New content will be
1.193 schwarze 1850: * appended from roff_block_text() in multiline mode.
1.106 kristaps 1851: */
1.107 kristaps 1852:
1.238 schwarze 1853: if (tok == ROFF_de || tok == ROFF_dei)
1.213 schwarze 1854: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.76 kristaps 1855:
1.238 schwarze 1856: if (*cp == '\0')
1.78 kristaps 1857: return(ROFF_IGN);
1858:
1.220 schwarze 1859: /* Get the custom end marker. */
1.107 kristaps 1860:
1.220 schwarze 1861: iname = cp;
1.213 schwarze 1862: namesz = roff_getname(r, &cp, ln, ppos);
1.220 schwarze 1863:
1864: /* Resolve the end marker if it is indirect. */
1865:
1.238 schwarze 1866: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1867: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.220 schwarze 1868: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1869: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1870: "%.*s", (int)namesz, iname);
1871: namesz = 0;
1872: } else
1873: namesz = strlen(name);
1874: } else
1875: name = iname;
1876:
1.213 schwarze 1877: if (namesz)
1878: r->last->end = mandoc_strndup(name, namesz);
1.78 kristaps 1879:
1.238 schwarze 1880: if (*cp != '\0')
1.217 schwarze 1881: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1882: ln, pos, ".%s ... %s", roffs[tok].name, cp);
1.74 kristaps 1883:
1.78 kristaps 1884: return(ROFF_IGN);
1885: }
1886:
1887: static enum rofferr
1.80 kristaps 1888: roff_block_sub(ROFF_ARGS)
1.79 kristaps 1889: {
1890: enum rofft t;
1891: int i, j;
1892:
1893: /*
1894: * First check whether a custom macro exists at this level. If
1895: * it does, then check against it. This is some of groff's
1896: * stranger behaviours. If we encountered a custom end-scope
1897: * tag and that tag also happens to be a "real" macro, then we
1898: * need to try interpreting it again as a real macro. If it's
1899: * not, then return ignore. Else continue.
1900: */
1901:
1902: if (r->last->end) {
1.130 kristaps 1903: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.238 schwarze 1904: if (buf->buf[i] != r->last->end[j])
1.79 kristaps 1905: break;
1906:
1.238 schwarze 1907: if (r->last->end[j] == '\0' &&
1908: (buf->buf[i] == '\0' ||
1909: buf->buf[i] == ' ' ||
1910: buf->buf[i] == '\t')) {
1.79 kristaps 1911: roffnode_pop(r);
1912: roffnode_cleanscope(r);
1913:
1.238 schwarze 1914: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.130 kristaps 1915: i++;
1916:
1917: pos = i;
1.238 schwarze 1918: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1919: ROFF_MAX)
1.79 kristaps 1920: return(ROFF_RERUN);
1921: return(ROFF_IGN);
1922: }
1923: }
1924:
1925: /*
1926: * If we have no custom end-query or lookup failed, then try
1927: * pulling it out of the hashtable.
1928: */
1929:
1.238 schwarze 1930: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.79 kristaps 1931:
1.238 schwarze 1932: if (t != ROFF_cblock) {
1933: if (tok != ROFF_ig)
1934: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.79 kristaps 1935: return(ROFF_IGN);
1.106 kristaps 1936: }
1.79 kristaps 1937:
1938: assert(roffs[t].proc);
1.238 schwarze 1939: return((*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs));
1.79 kristaps 1940: }
1941:
1942: static enum rofferr
1.80 kristaps 1943: roff_block_text(ROFF_ARGS)
1.78 kristaps 1944: {
1945:
1.238 schwarze 1946: if (tok != ROFF_ig)
1947: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.106 kristaps 1948:
1.78 kristaps 1949: return(ROFF_IGN);
1950: }
1951:
1952: static enum rofferr
1.82 kristaps 1953: roff_cond_sub(ROFF_ARGS)
1954: {
1955: enum rofft t;
1.139 kristaps 1956: char *ep;
1.198 schwarze 1957: int rr;
1.82 kristaps 1958:
1959: rr = r->last->rule;
1.139 kristaps 1960: roffnode_cleanscope(r);
1.238 schwarze 1961: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.82 kristaps 1962:
1.139 kristaps 1963: /*
1.177 schwarze 1964: * Fully handle known macros when they are structurally
1965: * required or when the conditional evaluated to true.
1.87 kristaps 1966: */
1967:
1.238 schwarze 1968: if ((t != ROFF_MAX) &&
1969: (rr || roffs[t].flags & ROFFMAC_STRUCT)) {
1.177 schwarze 1970: assert(roffs[t].proc);
1.238 schwarze 1971: return((*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs));
1.177 schwarze 1972: }
1.144 kristaps 1973:
1.196 schwarze 1974: /*
1975: * If `\}' occurs on a macro line without a preceding macro,
1976: * drop the line completely.
1977: */
1978:
1.238 schwarze 1979: ep = buf->buf + pos;
1980: if (ep[0] == '\\' && ep[1] == '}')
1.198 schwarze 1981: rr = 0;
1.196 schwarze 1982:
1.177 schwarze 1983: /* Always check for the closing delimiter `\}'. */
1.144 kristaps 1984:
1.238 schwarze 1985: while ((ep = strchr(ep, '\\')) != NULL) {
1986: if (*(++ep) == '}') {
1.197 schwarze 1987: *ep = '&';
1.238 schwarze 1988: roff_ccond(r, ln, ep - buf->buf - 1);
1.197 schwarze 1989: }
1.247 schwarze 1990: if (*ep != '\0')
1991: ++ep;
1.177 schwarze 1992: }
1.198 schwarze 1993: return(rr ? ROFF_CONT : ROFF_IGN);
1.82 kristaps 1994: }
1995:
1996: static enum rofferr
1997: roff_cond_text(ROFF_ARGS)
1.78 kristaps 1998: {
1.140 kristaps 1999: char *ep;
1.198 schwarze 2000: int rr;
1.82 kristaps 2001:
2002: rr = r->last->rule;
1.140 kristaps 2003: roffnode_cleanscope(r);
1.82 kristaps 2004:
1.238 schwarze 2005: ep = buf->buf + pos;
2006: while ((ep = strchr(ep, '\\')) != NULL) {
2007: if (*(++ep) == '}') {
1.197 schwarze 2008: *ep = '&';
1.238 schwarze 2009: roff_ccond(r, ln, ep - buf->buf - 1);
1.197 schwarze 2010: }
1.247 schwarze 2011: if (*ep != '\0')
2012: ++ep;
1.78 kristaps 2013: }
1.198 schwarze 2014: return(rr ? ROFF_CONT : ROFF_IGN);
1.74 kristaps 2015: }
2016:
1.266 schwarze 2017: /* --- handling of numeric and conditional expressions -------------------- */
2018:
1.204 schwarze 2019: /*
2020: * Parse a single signed integer number. Stop at the first non-digit.
2021: * If there is at least one digit, return success and advance the
2022: * parse point, else return failure and let the parse point unchanged.
2023: * Ignore overflows, treat them just like the C language.
2024: */
1.184 schwarze 2025: static int
1.261 schwarze 2026: roff_getnum(const char *v, int *pos, int *res, int flags)
1.184 schwarze 2027: {
1.261 schwarze 2028: int myres, scaled, n, p;
1.206 schwarze 2029:
2030: if (NULL == res)
2031: res = &myres;
1.184 schwarze 2032:
2033: p = *pos;
2034: n = v[p] == '-';
1.261 schwarze 2035: if (n || v[p] == '+')
1.184 schwarze 2036: p++;
2037:
1.261 schwarze 2038: if (flags & ROFFNUM_WHITE)
2039: while (isspace((unsigned char)v[p]))
2040: p++;
2041:
1.184 schwarze 2042: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.204 schwarze 2043: *res = 10 * *res + v[p] - '0';
1.184 schwarze 2044: if (p == *pos + n)
2045: return 0;
2046:
2047: if (n)
2048: *res = -*res;
2049:
1.254 schwarze 2050: /* Each number may be followed by one optional scaling unit. */
2051:
2052: switch (v[p]) {
2053: case 'f':
1.261 schwarze 2054: scaled = *res * 65536;
1.254 schwarze 2055: break;
2056: case 'i':
1.261 schwarze 2057: scaled = *res * 240;
1.254 schwarze 2058: break;
2059: case 'c':
1.261 schwarze 2060: scaled = *res * 240 / 2.54;
1.254 schwarze 2061: break;
2062: case 'v':
2063: /* FALLTROUGH */
2064: case 'P':
1.261 schwarze 2065: scaled = *res * 40;
1.254 schwarze 2066: break;
2067: case 'm':
2068: /* FALLTROUGH */
2069: case 'n':
1.261 schwarze 2070: scaled = *res * 24;
1.254 schwarze 2071: break;
2072: case 'p':
1.261 schwarze 2073: scaled = *res * 10 / 3;
1.254 schwarze 2074: break;
2075: case 'u':
1.261 schwarze 2076: scaled = *res;
1.254 schwarze 2077: break;
2078: case 'M':
1.261 schwarze 2079: scaled = *res * 6 / 25;
1.254 schwarze 2080: break;
2081: default:
1.261 schwarze 2082: scaled = *res;
1.254 schwarze 2083: p--;
2084: break;
2085: }
1.261 schwarze 2086: if (flags & ROFFNUM_SCALE)
2087: *res = scaled;
1.254 schwarze 2088:
2089: *pos = p + 1;
2090: return(1);
1.184 schwarze 2091: }
2092:
1.198 schwarze 2093: /*
2094: * Evaluate a string comparison condition.
2095: * The first character is the delimiter.
2096: * Succeed if the string up to its second occurrence
2097: * matches the string up to its third occurence.
2098: * Advance the cursor after the third occurrence
2099: * or lacking that, to the end of the line.
2100: */
2101: static int
2102: roff_evalstrcond(const char *v, int *pos)
2103: {
2104: const char *s1, *s2, *s3;
2105: int match;
2106:
2107: match = 0;
2108: s1 = v + *pos; /* initial delimiter */
2109: s2 = s1 + 1; /* for scanning the first string */
2110: s3 = strchr(s2, *s1); /* for scanning the second string */
2111:
2112: if (NULL == s3) /* found no middle delimiter */
2113: goto out;
2114:
2115: while ('\0' != *++s3) {
2116: if (*s2 != *s3) { /* mismatch */
2117: s3 = strchr(s3, *s1);
2118: break;
2119: }
2120: if (*s3 == *s1) { /* found the final delimiter */
2121: match = 1;
2122: break;
2123: }
2124: s2++;
2125: }
2126:
2127: out:
2128: if (NULL == s3)
2129: s3 = strchr(s2, '\0');
1.242 schwarze 2130: else if (*s3 != '\0')
1.198 schwarze 2131: s3++;
2132: *pos = s3 - v;
2133: return(match);
2134: }
2135:
1.204 schwarze 2136: /*
2137: * Evaluate an optionally negated single character, numerical,
2138: * or string condition.
2139: */
1.198 schwarze 2140: static int
1.271 schwarze 2141: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.88 kristaps 2142: {
1.271 schwarze 2143: char *cp, *name;
2144: size_t sz;
1.241 schwarze 2145: int number, savepos, wanttrue;
1.88 kristaps 2146:
1.198 schwarze 2147: if ('!' == v[*pos]) {
2148: wanttrue = 0;
2149: (*pos)++;
2150: } else
2151: wanttrue = 1;
2152:
1.88 kristaps 2153: switch (v[*pos]) {
1.240 schwarze 2154: case '\0':
2155: return(0);
1.207 schwarze 2156: case 'n':
1.198 schwarze 2157: /* FALLTHROUGH */
1.207 schwarze 2158: case 'o':
1.88 kristaps 2159: (*pos)++;
1.198 schwarze 2160: return(wanttrue);
1.207 schwarze 2161: case 'c':
1.198 schwarze 2162: /* FALLTHROUGH */
1.207 schwarze 2163: case 'd':
1.198 schwarze 2164: /* FALLTHROUGH */
1.207 schwarze 2165: case 'e':
1.88 kristaps 2166: /* FALLTHROUGH */
1.207 schwarze 2167: case 't':
1.239 schwarze 2168: /* FALLTHROUGH */
2169: case 'v':
1.88 kristaps 2170: (*pos)++;
1.198 schwarze 2171: return(!wanttrue);
1.271 schwarze 2172: case 'r':
2173: cp = name = v + ++*pos;
2174: sz = roff_getname(r, &cp, ln, *pos);
2175: *pos = cp - v;
2176: return((sz && roff_hasregn(r, name, sz)) == wanttrue);
1.88 kristaps 2177: default:
2178: break;
2179: }
2180:
1.241 schwarze 2181: savepos = *pos;
1.261 schwarze 2182: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.204 schwarze 2183: return((number > 0) == wanttrue);
1.241 schwarze 2184: else if (*pos == savepos)
2185: return(roff_evalstrcond(v, pos) == wanttrue);
1.204 schwarze 2186: else
1.241 schwarze 2187: return (0);
1.88 kristaps 2188: }
2189:
1.74 kristaps 2190: static enum rofferr
1.103 kristaps 2191: roff_line_ignore(ROFF_ARGS)
1.89 kristaps 2192: {
1.123 schwarze 2193:
1.89 kristaps 2194: return(ROFF_IGN);
2195: }
2196:
1.104 kristaps 2197: static enum rofferr
1.251 schwarze 2198: roff_insec(ROFF_ARGS)
2199: {
2200:
2201: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
2202: ln, ppos, roffs[tok].name);
2203: return(ROFF_IGN);
2204: }
2205:
2206: static enum rofferr
2207: roff_unsupp(ROFF_ARGS)
2208: {
2209:
2210: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
2211: ln, ppos, roffs[tok].name);
2212: return(ROFF_IGN);
2213: }
2214:
2215: static enum rofferr
1.82 kristaps 2216: roff_cond(ROFF_ARGS)
1.74 kristaps 2217: {
1.173 schwarze 2218:
2219: roffnode_push(r, tok, NULL, ln, ppos);
1.74 kristaps 2220:
1.207 schwarze 2221: /*
1.134 kristaps 2222: * An `.el' has no conditional body: it will consume the value
2223: * of the current rstack entry set in prior `ie' calls or
1.207 schwarze 2224: * defaults to DENY.
1.134 kristaps 2225: *
2226: * If we're not an `el', however, then evaluate the conditional.
2227: */
1.133 kristaps 2228:
1.238 schwarze 2229: r->last->rule = tok == ROFF_el ?
1.207 schwarze 2230: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.238 schwarze 2231: roff_evalcond(r, ln, buf->buf, &pos);
1.77 kristaps 2232:
1.134 kristaps 2233: /*
2234: * An if-else will put the NEGATION of the current evaluated
2235: * conditional into the stack of rules.
2236: */
2237:
1.238 schwarze 2238: if (tok == ROFF_ie) {
1.223 schwarze 2239: if (r->rstackpos + 1 == r->rstacksz) {
2240: r->rstacksz += 16;
2241: r->rstack = mandoc_reallocarray(r->rstack,
2242: r->rstacksz, sizeof(int));
1.134 kristaps 2243: }
1.198 schwarze 2244: r->rstack[++r->rstackpos] = !r->last->rule;
1.82 kristaps 2245: }
1.88 kristaps 2246:
2247: /* If the parent has false as its rule, then so do we. */
2248:
1.198 schwarze 2249: if (r->last->parent && !r->last->parent->rule)
2250: r->last->rule = 0;
1.88 kristaps 2251:
2252: /*
1.173 schwarze 2253: * Determine scope.
2254: * If there is nothing on the line after the conditional,
2255: * not even whitespace, use next-line scope.
1.88 kristaps 2256: */
1.74 kristaps 2257:
1.238 schwarze 2258: if (buf->buf[pos] == '\0') {
1.173 schwarze 2259: r->last->endspan = 2;
2260: goto out;
2261: }
2262:
1.238 schwarze 2263: while (buf->buf[pos] == ' ')
1.173 schwarze 2264: pos++;
2265:
2266: /* An opening brace requests multiline scope. */
1.75 kristaps 2267:
1.238 schwarze 2268: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.75 kristaps 2269: r->last->endspan = -1;
2270: pos += 2;
1.272 schwarze 2271: while (buf->buf[pos] == ' ')
2272: pos++;
1.173 schwarze 2273: goto out;
1.207 schwarze 2274: }
1.74 kristaps 2275:
1.77 kristaps 2276: /*
1.173 schwarze 2277: * Anything else following the conditional causes
2278: * single-line scope. Warn if the scope contains
2279: * nothing but trailing whitespace.
1.77 kristaps 2280: */
2281:
1.238 schwarze 2282: if (buf->buf[pos] == '\0')
1.216 schwarze 2283: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
2284: ln, ppos, roffs[tok].name);
1.77 kristaps 2285:
1.173 schwarze 2286: r->last->endspan = 1;
1.74 kristaps 2287:
1.173 schwarze 2288: out:
1.75 kristaps 2289: *offs = pos;
2290: return(ROFF_RERUN);
1.83 schwarze 2291: }
2292:
2293: static enum rofferr
1.92 schwarze 2294: roff_ds(ROFF_ARGS)
2295: {
1.212 schwarze 2296: char *string;
2297: const char *name;
2298: size_t namesz;
1.96 kristaps 2299:
1.251 schwarze 2300: /* Ignore groff compatibility mode for now. */
2301:
2302: if (tok == ROFF_ds1)
2303: tok = ROFF_ds;
2304: else if (tok == ROFF_as1)
2305: tok = ROFF_as;
2306:
1.96 kristaps 2307: /*
1.212 schwarze 2308: * The first word is the name of the string.
2309: * If it is empty or terminated by an escape sequence,
2310: * abort the `ds' request without defining anything.
1.96 kristaps 2311: */
1.92 schwarze 2312:
1.238 schwarze 2313: name = string = buf->buf + pos;
2314: if (*name == '\0')
1.92 schwarze 2315: return(ROFF_IGN);
2316:
1.212 schwarze 2317: namesz = roff_getname(r, &string, ln, pos);
1.238 schwarze 2318: if (name[namesz] == '\\')
1.212 schwarze 2319: return(ROFF_IGN);
2320:
2321: /* Read past the initial double-quote, if any. */
1.238 schwarze 2322: if (*string == '"')
1.92 schwarze 2323: string++;
2324:
1.96 kristaps 2325: /* The rest is the value. */
1.212 schwarze 2326: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2327: ROFF_as == tok);
1.92 schwarze 2328: return(ROFF_IGN);
2329: }
2330:
1.204 schwarze 2331: /*
2332: * Parse a single operator, one or two characters long.
2333: * If the operator is recognized, return success and advance the
2334: * parse point, else return failure and let the parse point unchanged.
2335: */
2336: static int
2337: roff_getop(const char *v, int *pos, char *res)
2338: {
2339:
2340: *res = v[*pos];
2341:
2342: switch (*res) {
1.207 schwarze 2343: case '+':
1.204 schwarze 2344: /* FALLTHROUGH */
1.207 schwarze 2345: case '-':
1.204 schwarze 2346: /* FALLTHROUGH */
1.207 schwarze 2347: case '*':
1.204 schwarze 2348: /* FALLTHROUGH */
1.207 schwarze 2349: case '/':
1.204 schwarze 2350: /* FALLTHROUGH */
1.207 schwarze 2351: case '%':
1.204 schwarze 2352: /* FALLTHROUGH */
1.207 schwarze 2353: case '&':
1.204 schwarze 2354: /* FALLTHROUGH */
1.207 schwarze 2355: case ':':
1.204 schwarze 2356: break;
2357: case '<':
2358: switch (v[*pos + 1]) {
1.207 schwarze 2359: case '=':
1.204 schwarze 2360: *res = 'l';
2361: (*pos)++;
2362: break;
1.207 schwarze 2363: case '>':
1.204 schwarze 2364: *res = '!';
2365: (*pos)++;
2366: break;
1.207 schwarze 2367: case '?':
1.204 schwarze 2368: *res = 'i';
2369: (*pos)++;
2370: break;
2371: default:
2372: break;
2373: }
2374: break;
2375: case '>':
2376: switch (v[*pos + 1]) {
1.207 schwarze 2377: case '=':
1.204 schwarze 2378: *res = 'g';
2379: (*pos)++;
2380: break;
1.207 schwarze 2381: case '?':
1.204 schwarze 2382: *res = 'a';
2383: (*pos)++;
2384: break;
2385: default:
2386: break;
2387: }
2388: break;
2389: case '=':
2390: if ('=' == v[*pos + 1])
2391: (*pos)++;
2392: break;
2393: default:
2394: return(0);
2395: }
2396: (*pos)++;
2397:
2398: return(*res);
2399: }
2400:
2401: /*
2402: * Evaluate either a parenthesized numeric expression
2403: * or a single signed integer number.
2404: */
2405: static int
1.235 schwarze 2406: roff_evalpar(struct roff *r, int ln,
1.261 schwarze 2407: const char *v, int *pos, int *res, int flags)
1.204 schwarze 2408: {
2409:
2410: if ('(' != v[*pos])
1.261 schwarze 2411: return(roff_getnum(v, pos, res, flags));
1.204 schwarze 2412:
2413: (*pos)++;
1.261 schwarze 2414: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.204 schwarze 2415: return(0);
2416:
1.206 schwarze 2417: /*
2418: * Omission of the closing parenthesis
2419: * is an error in validation mode,
2420: * but ignored in evaluation mode.
2421: */
2422:
1.204 schwarze 2423: if (')' == v[*pos])
2424: (*pos)++;
1.206 schwarze 2425: else if (NULL == res)
2426: return(0);
1.204 schwarze 2427:
2428: return(1);
2429: }
2430:
2431: /*
2432: * Evaluate a complete numeric expression.
2433: * Proceed left to right, there is no concept of precedence.
2434: */
2435: static int
1.235 schwarze 2436: roff_evalnum(struct roff *r, int ln, const char *v,
1.261 schwarze 2437: int *pos, int *res, int flags)
1.204 schwarze 2438: {
2439: int mypos, operand2;
2440: char operator;
2441:
2442: if (NULL == pos) {
2443: mypos = 0;
2444: pos = &mypos;
2445: }
2446:
1.261 schwarze 2447: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2448: while (isspace((unsigned char)v[*pos]))
2449: (*pos)++;
2450:
1.261 schwarze 2451: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.204 schwarze 2452: return(0);
2453:
2454: while (1) {
1.261 schwarze 2455: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2456: while (isspace((unsigned char)v[*pos]))
2457: (*pos)++;
2458:
2459: if ( ! roff_getop(v, pos, &operator))
2460: break;
2461:
1.261 schwarze 2462: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2463: while (isspace((unsigned char)v[*pos]))
2464: (*pos)++;
2465:
1.261 schwarze 2466: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.204 schwarze 2467: return(0);
2468:
1.261 schwarze 2469: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2470: while (isspace((unsigned char)v[*pos]))
2471: (*pos)++;
1.206 schwarze 2472:
2473: if (NULL == res)
2474: continue;
1.204 schwarze 2475:
2476: switch (operator) {
1.207 schwarze 2477: case '+':
1.204 schwarze 2478: *res += operand2;
2479: break;
1.207 schwarze 2480: case '-':
1.204 schwarze 2481: *res -= operand2;
2482: break;
1.207 schwarze 2483: case '*':
1.204 schwarze 2484: *res *= operand2;
2485: break;
1.207 schwarze 2486: case '/':
1.244 schwarze 2487: if (operand2 == 0) {
1.235 schwarze 2488: mandoc_msg(MANDOCERR_DIVZERO,
1.234 kristaps 2489: r->parse, ln, *pos, v);
2490: *res = 0;
2491: break;
2492: }
1.204 schwarze 2493: *res /= operand2;
2494: break;
1.207 schwarze 2495: case '%':
1.244 schwarze 2496: if (operand2 == 0) {
2497: mandoc_msg(MANDOCERR_DIVZERO,
2498: r->parse, ln, *pos, v);
2499: *res = 0;
2500: break;
2501: }
1.204 schwarze 2502: *res %= operand2;
2503: break;
1.207 schwarze 2504: case '<':
1.204 schwarze 2505: *res = *res < operand2;
2506: break;
1.207 schwarze 2507: case '>':
1.204 schwarze 2508: *res = *res > operand2;
2509: break;
1.207 schwarze 2510: case 'l':
1.204 schwarze 2511: *res = *res <= operand2;
2512: break;
1.207 schwarze 2513: case 'g':
1.204 schwarze 2514: *res = *res >= operand2;
2515: break;
1.207 schwarze 2516: case '=':
1.204 schwarze 2517: *res = *res == operand2;
2518: break;
1.207 schwarze 2519: case '!':
1.204 schwarze 2520: *res = *res != operand2;
2521: break;
1.207 schwarze 2522: case '&':
1.204 schwarze 2523: *res = *res && operand2;
2524: break;
1.207 schwarze 2525: case ':':
1.204 schwarze 2526: *res = *res || operand2;
2527: break;
1.207 schwarze 2528: case 'i':
1.204 schwarze 2529: if (operand2 < *res)
2530: *res = operand2;
2531: break;
1.207 schwarze 2532: case 'a':
1.204 schwarze 2533: if (operand2 > *res)
2534: *res = operand2;
2535: break;
2536: default:
2537: abort();
2538: }
2539: }
2540: return(1);
2541: }
2542:
1.266 schwarze 2543: /* --- register management ------------------------------------------------ */
2544:
1.180 schwarze 2545: void
1.187 schwarze 2546: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.147 kristaps 2547: {
1.180 schwarze 2548: struct roffreg *reg;
2549:
2550: /* Search for an existing register with the same name. */
2551: reg = r->regtab;
2552:
2553: while (reg && strcmp(name, reg->key.p))
2554: reg = reg->next;
1.147 kristaps 2555:
1.180 schwarze 2556: if (NULL == reg) {
2557: /* Create a new register. */
2558: reg = mandoc_malloc(sizeof(struct roffreg));
2559: reg->key.p = mandoc_strdup(name);
2560: reg->key.sz = strlen(name);
1.187 schwarze 2561: reg->val = 0;
1.180 schwarze 2562: reg->next = r->regtab;
2563: r->regtab = reg;
2564: }
2565:
1.187 schwarze 2566: if ('+' == sign)
2567: reg->val += val;
2568: else if ('-' == sign)
2569: reg->val -= val;
2570: else
2571: reg->val = val;
1.147 kristaps 2572: }
2573:
1.192 schwarze 2574: /*
2575: * Handle some predefined read-only number registers.
2576: * For now, return -1 if the requested register is not predefined;
2577: * in case a predefined read-only register having the value -1
2578: * were to turn up, another special value would have to be chosen.
2579: */
2580: static int
1.273 schwarze 2581: roff_getregro(const struct roff *r, const char *name)
1.192 schwarze 2582: {
2583:
2584: switch (*name) {
1.273 schwarze 2585: case '$': /* Number of arguments of the last macro evaluated. */
2586: return(r->argc);
1.207 schwarze 2587: case 'A': /* ASCII approximation mode is always off. */
1.192 schwarze 2588: return(0);
1.207 schwarze 2589: case 'g': /* Groff compatibility mode is always on. */
1.192 schwarze 2590: return(1);
1.207 schwarze 2591: case 'H': /* Fixed horizontal resolution. */
1.192 schwarze 2592: return (24);
1.207 schwarze 2593: case 'j': /* Always adjust left margin only. */
1.192 schwarze 2594: return(0);
1.207 schwarze 2595: case 'T': /* Some output device is always defined. */
1.192 schwarze 2596: return(1);
1.207 schwarze 2597: case 'V': /* Fixed vertical resolution. */
1.192 schwarze 2598: return (40);
2599: default:
2600: return (-1);
2601: }
2602: }
2603:
1.181 schwarze 2604: int
1.180 schwarze 2605: roff_getreg(const struct roff *r, const char *name)
1.147 kristaps 2606: {
1.180 schwarze 2607: struct roffreg *reg;
1.192 schwarze 2608: int val;
2609:
2610: if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) {
1.273 schwarze 2611: val = roff_getregro(r, name + 1);
1.192 schwarze 2612: if (-1 != val)
2613: return (val);
2614: }
1.180 schwarze 2615:
2616: for (reg = r->regtab; reg; reg = reg->next)
2617: if (0 == strcmp(name, reg->key.p))
1.181 schwarze 2618: return(reg->val);
2619:
2620: return(0);
2621: }
2622:
2623: static int
2624: roff_getregn(const struct roff *r, const char *name, size_t len)
2625: {
2626: struct roffreg *reg;
1.192 schwarze 2627: int val;
2628:
2629: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2630: val = roff_getregro(r, name + 1);
1.192 schwarze 2631: if (-1 != val)
2632: return (val);
2633: }
1.181 schwarze 2634:
2635: for (reg = r->regtab; reg; reg = reg->next)
2636: if (len == reg->key.sz &&
2637: 0 == strncmp(name, reg->key.p, len))
2638: return(reg->val);
1.271 schwarze 2639:
2640: return(0);
2641: }
2642:
2643: static int
2644: roff_hasregn(const struct roff *r, const char *name, size_t len)
2645: {
2646: struct roffreg *reg;
2647: int val;
2648:
2649: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2650: val = roff_getregro(r, name + 1);
1.271 schwarze 2651: if (-1 != val)
2652: return(1);
2653: }
2654:
2655: for (reg = r->regtab; reg; reg = reg->next)
2656: if (len == reg->key.sz &&
2657: 0 == strncmp(name, reg->key.p, len))
2658: return(1);
1.147 kristaps 2659:
1.180 schwarze 2660: return(0);
1.147 kristaps 2661: }
2662:
1.180 schwarze 2663: static void
2664: roff_freereg(struct roffreg *reg)
1.147 kristaps 2665: {
1.180 schwarze 2666: struct roffreg *old_reg;
1.147 kristaps 2667:
1.180 schwarze 2668: while (NULL != reg) {
2669: free(reg->key.p);
2670: old_reg = reg;
2671: reg = reg->next;
2672: free(old_reg);
2673: }
1.147 kristaps 2674: }
1.92 schwarze 2675:
2676: static enum rofferr
1.89 kristaps 2677: roff_nr(ROFF_ARGS)
1.83 schwarze 2678: {
1.212 schwarze 2679: char *key, *val;
2680: size_t keysz;
1.138 kristaps 2681: int iv;
1.187 schwarze 2682: char sign;
1.89 kristaps 2683:
1.238 schwarze 2684: key = val = buf->buf + pos;
2685: if (*key == '\0')
1.212 schwarze 2686: return(ROFF_IGN);
2687:
2688: keysz = roff_getname(r, &val, ln, pos);
1.238 schwarze 2689: if (key[keysz] == '\\')
1.212 schwarze 2690: return(ROFF_IGN);
2691: key[keysz] = '\0';
1.89 kristaps 2692:
1.187 schwarze 2693: sign = *val;
1.238 schwarze 2694: if (sign == '+' || sign == '-')
1.187 schwarze 2695: val++;
2696:
1.261 schwarze 2697: if (roff_evalnum(r, ln, val, NULL, &iv, ROFFNUM_SCALE))
1.204 schwarze 2698: roff_setreg(r, key, iv, sign);
1.109 kristaps 2699:
1.203 schwarze 2700: return(ROFF_IGN);
2701: }
2702:
2703: static enum rofferr
2704: roff_rr(ROFF_ARGS)
2705: {
2706: struct roffreg *reg, **prev;
1.212 schwarze 2707: char *name, *cp;
2708: size_t namesz;
1.203 schwarze 2709:
1.238 schwarze 2710: name = cp = buf->buf + pos;
2711: if (*name == '\0')
1.212 schwarze 2712: return(ROFF_IGN);
2713: namesz = roff_getname(r, &cp, ln, pos);
2714: name[namesz] = '\0';
1.203 schwarze 2715:
2716: prev = &r->regtab;
2717: while (1) {
2718: reg = *prev;
1.238 schwarze 2719: if (reg == NULL || !strcmp(name, reg->key.p))
1.203 schwarze 2720: break;
2721: prev = ®->next;
2722: }
1.238 schwarze 2723: if (reg != NULL) {
1.203 schwarze 2724: *prev = reg->next;
2725: free(reg->key.p);
2726: free(reg);
2727: }
1.122 schwarze 2728: return(ROFF_IGN);
2729: }
2730:
1.266 schwarze 2731: /* --- handler functions for roff requests -------------------------------- */
2732:
1.122 schwarze 2733: static enum rofferr
2734: roff_rm(ROFF_ARGS)
2735: {
2736: const char *name;
2737: char *cp;
1.212 schwarze 2738: size_t namesz;
1.122 schwarze 2739:
1.238 schwarze 2740: cp = buf->buf + pos;
2741: while (*cp != '\0') {
1.212 schwarze 2742: name = cp;
1.238 schwarze 2743: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.212 schwarze 2744: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.238 schwarze 2745: if (name[namesz] == '\\')
1.212 schwarze 2746: break;
1.122 schwarze 2747: }
1.178 schwarze 2748: return(ROFF_IGN);
2749: }
2750:
2751: static enum rofferr
2752: roff_it(ROFF_ARGS)
2753: {
2754: int iv;
2755:
2756: /* Parse the number of lines. */
1.261 schwarze 2757:
2758: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.222 schwarze 2759: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.238 schwarze 2760: ln, ppos, buf->buf + 1);
1.178 schwarze 2761: return(ROFF_IGN);
2762: }
2763:
1.262 schwarze 2764: while (isspace((unsigned char)buf->buf[pos]))
2765: pos++;
2766:
2767: /*
2768: * Arm the input line trap.
2769: * Special-casing "an-trap" is an ugly workaround to cope
2770: * with DocBook stupidly fiddling with man(7) internals.
2771: */
1.261 schwarze 2772:
1.178 schwarze 2773: roffit_lines = iv;
1.262 schwarze 2774: roffit_macro = mandoc_strdup(iv != 1 ||
2775: strcmp(buf->buf + pos, "an-trap") ?
2776: buf->buf + pos : "br");
1.109 kristaps 2777: return(ROFF_IGN);
1.175 schwarze 2778: }
2779:
2780: static enum rofferr
2781: roff_Dd(ROFF_ARGS)
2782: {
2783: const char *const *cp;
2784:
1.227 schwarze 2785: if ((r->options & (MPARSE_MDOC | MPARSE_QUICK)) == 0)
1.175 schwarze 2786: for (cp = __mdoc_reserved; *cp; cp++)
2787: roff_setstr(r, *cp, NULL, 0);
2788:
1.227 schwarze 2789: if (r->format == 0)
2790: r->format = MPARSE_MDOC;
2791:
1.175 schwarze 2792: return(ROFF_CONT);
2793: }
2794:
2795: static enum rofferr
2796: roff_TH(ROFF_ARGS)
2797: {
2798: const char *const *cp;
2799:
1.227 schwarze 2800: if ((r->options & MPARSE_QUICK) == 0)
1.175 schwarze 2801: for (cp = __man_reserved; *cp; cp++)
2802: roff_setstr(r, *cp, NULL, 0);
2803:
1.227 schwarze 2804: if (r->format == 0)
2805: r->format = MPARSE_MAN;
2806:
1.175 schwarze 2807: return(ROFF_CONT);
1.109 kristaps 2808: }
2809:
2810: static enum rofferr
2811: roff_TE(ROFF_ARGS)
2812: {
2813:
2814: if (NULL == r->tbl)
1.221 schwarze 2815: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2816: ln, ppos, "TE");
1.258 schwarze 2817: else if ( ! tbl_end(&r->tbl)) {
2818: free(buf->buf);
2819: buf->buf = mandoc_strdup(".sp");
2820: buf->sz = 4;
2821: return(ROFF_REPARSE);
2822: }
1.112 kristaps 2823: return(ROFF_IGN);
2824: }
2825:
2826: static enum rofferr
2827: roff_T_(ROFF_ARGS)
2828: {
2829:
2830: if (NULL == r->tbl)
1.221 schwarze 2831: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2832: ln, ppos, "T&");
1.112 kristaps 2833: else
1.116 kristaps 2834: tbl_restart(ppos, ln, r->tbl);
1.112 kristaps 2835:
1.109 kristaps 2836: return(ROFF_IGN);
2837: }
2838:
1.230 schwarze 2839: /*
2840: * Handle in-line equation delimiters.
2841: */
2842: static enum rofferr
1.238 schwarze 2843: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.151 kristaps 2844: {
1.233 schwarze 2845: char *cp1, *cp2;
2846: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.151 kristaps 2847:
1.230 schwarze 2848: /*
2849: * Outside equations, look for an opening delimiter.
2850: * If we are inside an equation, we already know it is
2851: * in-line, or this function wouldn't have been called;
2852: * so look for a closing delimiter.
2853: */
2854:
1.238 schwarze 2855: cp1 = buf->buf + pos;
1.230 schwarze 2856: cp2 = strchr(cp1, r->eqn == NULL ?
2857: r->last_eqn->odelim : r->last_eqn->cdelim);
2858: if (cp2 == NULL)
2859: return(ROFF_CONT);
2860:
1.233 schwarze 2861: *cp2++ = '\0';
2862: bef_pr = bef_nl = aft_nl = aft_pr = "";
2863:
2864: /* Handle preceding text, protecting whitespace. */
2865:
1.238 schwarze 2866: if (*buf->buf != '\0') {
1.233 schwarze 2867: if (r->eqn == NULL)
2868: bef_pr = "\\&";
2869: bef_nl = "\n";
2870: }
2871:
2872: /*
2873: * Prepare replacing the delimiter with an equation macro
2874: * and drop leading white space from the equation.
2875: */
1.230 schwarze 2876:
1.233 schwarze 2877: if (r->eqn == NULL) {
2878: while (*cp2 == ' ')
2879: cp2++;
2880: mac = ".EQ";
2881: } else
2882: mac = ".EN";
2883:
2884: /* Handle following text, protecting whitespace. */
2885:
2886: if (*cp2 != '\0') {
2887: aft_nl = "\n";
2888: if (r->eqn != NULL)
2889: aft_pr = "\\&";
2890: }
2891:
2892: /* Do the actual replacement. */
2893:
1.238 schwarze 2894: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.233 schwarze 2895: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.238 schwarze 2896: free(buf->buf);
2897: buf->buf = cp1;
1.230 schwarze 2898:
2899: /* Toggle the in-line state of the eqn subsystem. */
2900:
2901: r->eqn_inline = r->eqn == NULL;
2902: return(ROFF_REPARSE);
1.151 kristaps 2903: }
2904:
1.235 schwarze 2905: static enum rofferr
2906: roff_EQ(ROFF_ARGS)
1.125 kristaps 2907: {
1.151 kristaps 2908: struct eqn_node *e;
1.125 kristaps 2909:
1.238 schwarze 2910: assert(r->eqn == NULL);
1.235 schwarze 2911: e = eqn_alloc(ppos, ln, r->parse);
1.125 kristaps 2912:
1.230 schwarze 2913: if (r->last_eqn) {
1.125 kristaps 2914: r->last_eqn->next = e;
1.230 schwarze 2915: e->delim = r->last_eqn->delim;
2916: e->odelim = r->last_eqn->odelim;
2917: e->cdelim = r->last_eqn->cdelim;
2918: } else
1.125 kristaps 2919: r->first_eqn = r->last_eqn = e;
2920:
2921: r->eqn = r->last_eqn = e;
1.151 kristaps 2922:
1.238 schwarze 2923: if (buf->buf[pos] != '\0')
1.235 schwarze 2924: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 2925: ".EQ %s", buf->buf + pos);
1.151 kristaps 2926:
1.125 kristaps 2927: return(ROFF_IGN);
2928: }
2929:
2930: static enum rofferr
2931: roff_EN(ROFF_ARGS)
2932: {
2933:
1.221 schwarze 2934: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
1.125 kristaps 2935: return(ROFF_IGN);
2936: }
2937:
2938: static enum rofferr
1.109 kristaps 2939: roff_TS(ROFF_ARGS)
2940: {
1.176 schwarze 2941: struct tbl_node *tbl;
1.89 kristaps 2942:
1.115 kristaps 2943: if (r->tbl) {
1.221 schwarze 2944: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
2945: ln, ppos, "TS breaks TS");
1.151 kristaps 2946: tbl_end(&r->tbl);
1.115 kristaps 2947: }
1.83 schwarze 2948:
1.176 schwarze 2949: tbl = tbl_alloc(ppos, ln, r->parse);
1.113 kristaps 2950:
2951: if (r->last_tbl)
1.176 schwarze 2952: r->last_tbl->next = tbl;
1.113 kristaps 2953: else
1.176 schwarze 2954: r->first_tbl = r->last_tbl = tbl;
1.113 kristaps 2955:
1.176 schwarze 2956: r->tbl = r->last_tbl = tbl;
1.83 schwarze 2957: return(ROFF_IGN);
1.251 schwarze 2958: }
2959:
2960: static enum rofferr
2961: roff_brp(ROFF_ARGS)
2962: {
2963:
2964: buf->buf[pos - 1] = '\0';
2965: return(ROFF_CONT);
1.92 schwarze 2966: }
2967:
1.105 kristaps 2968: static enum rofferr
1.174 kristaps 2969: roff_cc(ROFF_ARGS)
2970: {
2971: const char *p;
2972:
1.238 schwarze 2973: p = buf->buf + pos;
1.174 kristaps 2974:
1.238 schwarze 2975: if (*p == '\0' || (r->control = *p++) == '.')
1.174 kristaps 2976: r->control = 0;
2977:
1.238 schwarze 2978: if (*p != '\0')
1.260 schwarze 2979: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
2980: ln, p - buf->buf, "cc ... %s", p);
1.174 kristaps 2981:
2982: return(ROFF_IGN);
2983: }
2984:
2985: static enum rofferr
1.164 kristaps 2986: roff_tr(ROFF_ARGS)
2987: {
2988: const char *p, *first, *second;
2989: size_t fsz, ssz;
2990: enum mandoc_esc esc;
2991:
1.238 schwarze 2992: p = buf->buf + pos;
1.164 kristaps 2993:
1.238 schwarze 2994: if (*p == '\0') {
1.260 schwarze 2995: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.164 kristaps 2996: return(ROFF_IGN);
2997: }
2998:
1.238 schwarze 2999: while (*p != '\0') {
1.164 kristaps 3000: fsz = ssz = 1;
3001:
3002: first = p++;
1.238 schwarze 3003: if (*first == '\\') {
1.164 kristaps 3004: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3005: if (esc == ESCAPE_ERROR) {
1.219 schwarze 3006: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 3007: ln, (int)(p - buf->buf), first);
1.164 kristaps 3008: return(ROFF_IGN);
3009: }
3010: fsz = (size_t)(p - first);
3011: }
3012:
3013: second = p++;
1.238 schwarze 3014: if (*second == '\\') {
1.164 kristaps 3015: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3016: if (esc == ESCAPE_ERROR) {
1.219 schwarze 3017: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 3018: ln, (int)(p - buf->buf), second);
1.164 kristaps 3019: return(ROFF_IGN);
3020: }
3021: ssz = (size_t)(p - second);
1.238 schwarze 3022: } else if (*second == '\0') {
1.260 schwarze 3023: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
3024: ln, first - buf->buf, "tr %s", first);
1.164 kristaps 3025: second = " ";
1.165 kristaps 3026: p--;
1.164 kristaps 3027: }
3028:
1.167 kristaps 3029: if (fsz > 1) {
1.207 schwarze 3030: roff_setstrn(&r->xmbtab, first, fsz,
3031: second, ssz, 0);
1.167 kristaps 3032: continue;
3033: }
3034:
1.238 schwarze 3035: if (r->xtab == NULL)
1.207 schwarze 3036: r->xtab = mandoc_calloc(128,
3037: sizeof(struct roffstr));
1.167 kristaps 3038:
3039: free(r->xtab[(int)*first].p);
3040: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3041: r->xtab[(int)*first].sz = ssz;
1.164 kristaps 3042: }
3043:
3044: return(ROFF_IGN);
3045: }
3046:
3047: static enum rofferr
1.105 kristaps 3048: roff_so(ROFF_ARGS)
3049: {
1.249 schwarze 3050: char *name, *cp;
1.105 kristaps 3051:
1.238 schwarze 3052: name = buf->buf + pos;
1.224 schwarze 3053: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.105 kristaps 3054:
3055: /*
3056: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3057: * opening anything that's not in our cwd or anything beneath
3058: * it. Thus, explicitly disallow traversing up the file-system
3059: * or using absolute paths.
3060: */
3061:
1.238 schwarze 3062: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.210 schwarze 3063: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
3064: ".so %s", name);
1.249 schwarze 3065: buf->sz = mandoc_asprintf(&cp,
3066: ".sp\nSee the file %s.\n.sp", name) + 1;
3067: free(buf->buf);
3068: buf->buf = cp;
3069: *offs = 0;
3070: return(ROFF_REPARSE);
1.105 kristaps 3071: }
3072:
3073: *offs = pos;
3074: return(ROFF_SO);
3075: }
1.92 schwarze 3076:
1.266 schwarze 3077: /* --- user defined strings and macros ------------------------------------ */
3078:
1.106 kristaps 3079: static enum rofferr
3080: roff_userdef(ROFF_ARGS)
1.99 kristaps 3081: {
1.263 schwarze 3082: const char *arg[9], *ap;
1.106 kristaps 3083: char *cp, *n1, *n2;
1.274 schwarze 3084: int i, ib, ie;
1.263 schwarze 3085: size_t asz, rsz;
1.106 kristaps 3086:
3087: /*
3088: * Collect pointers to macro argument strings
1.188 schwarze 3089: * and NUL-terminate them.
1.106 kristaps 3090: */
1.263 schwarze 3091:
1.273 schwarze 3092: r->argc = 0;
1.238 schwarze 3093: cp = buf->buf + pos;
1.273 schwarze 3094: for (i = 0; i < 9; i++) {
3095: if (*cp == '\0')
3096: arg[i] = "";
3097: else {
3098: arg[i] = mandoc_getarg(r->parse, &cp, ln, &pos);
3099: r->argc = i + 1;
3100: }
3101: }
1.99 kristaps 3102:
1.106 kristaps 3103: /*
3104: * Expand macro arguments.
1.99 kristaps 3105: */
1.263 schwarze 3106:
3107: buf->sz = strlen(r->current_string) + 1;
3108: n1 = cp = mandoc_malloc(buf->sz);
3109: memcpy(n1, r->current_string, buf->sz);
3110: while (*cp != '\0') {
3111:
3112: /* Scan ahead for the next argument invocation. */
3113:
3114: if (*cp++ != '\\')
3115: continue;
3116: if (*cp++ != '$')
3117: continue;
1.274 schwarze 3118: if (*cp == '*') { /* \\$* inserts all arguments */
3119: ib = 0;
3120: ie = r->argc - 1;
3121: } else { /* \\$1 .. \\$9 insert one argument */
3122: ib = ie = *cp - '1';
3123: if (ib < 0 || ib > 8)
3124: continue;
3125: }
1.263 schwarze 3126: cp -= 2;
3127:
3128: /*
3129: * Determine the size of the expanded argument,
3130: * taking escaping of quotes into account.
3131: */
3132:
1.274 schwarze 3133: asz = ie > ib ? ie - ib : 0; /* for blanks */
3134: for (i = ib; i <= ie; i++) {
3135: for (ap = arg[i]; *ap != '\0'; ap++) {
3136: asz++;
3137: if (*ap == '"')
3138: asz += 3;
3139: }
1.263 schwarze 3140: }
3141: if (asz != 3) {
3142:
3143: /*
3144: * Determine the size of the rest of the
3145: * unexpanded macro, including the NUL.
3146: */
3147:
3148: rsz = buf->sz - (cp - n1) - 3;
3149:
3150: /*
3151: * When shrinking, move before
3152: * releasing the storage.
3153: */
3154:
3155: if (asz < 3)
3156: memmove(cp + asz, cp + 3, rsz);
3157:
3158: /*
3159: * Resize the storage for the macro
3160: * and readjust the parse pointer.
3161: */
3162:
3163: buf->sz += asz - 3;
3164: n2 = mandoc_realloc(n1, buf->sz);
3165: cp = n2 + (cp - n1);
3166: n1 = n2;
3167:
3168: /*
3169: * When growing, make room
3170: * for the expanded argument.
3171: */
3172:
3173: if (asz > 3)
3174: memmove(cp + asz, cp + 3, rsz);
3175: }
3176:
3177: /* Copy the expanded argument, escaping quotes. */
3178:
3179: n2 = cp;
1.274 schwarze 3180: for (i = ib; i <= ie; i++) {
3181: for (ap = arg[i]; *ap != '\0'; ap++) {
3182: if (*ap == '"') {
3183: memcpy(n2, "\\(dq", 4);
3184: n2 += 4;
3185: } else
3186: *n2++ = *ap;
3187: }
3188: if (i < ie)
3189: *n2++ = ' ';
1.106 kristaps 3190: }
1.99 kristaps 3191: }
3192:
1.106 kristaps 3193: /*
3194: * Replace the macro invocation
3195: * by the expanded macro.
3196: */
1.263 schwarze 3197:
1.238 schwarze 3198: free(buf->buf);
3199: buf->buf = n1;
1.248 schwarze 3200: *offs = 0;
1.106 kristaps 3201:
1.238 schwarze 3202: return(buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
1.106 kristaps 3203: ROFF_REPARSE : ROFF_APPEND);
1.99 kristaps 3204: }
1.121 schwarze 3205:
1.212 schwarze 3206: static size_t
1.121 schwarze 3207: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3208: {
3209: char *name, *cp;
1.212 schwarze 3210: size_t namesz;
1.121 schwarze 3211:
3212: name = *cpp;
3213: if ('\0' == *name)
1.212 schwarze 3214: return(0);
1.121 schwarze 3215:
1.212 schwarze 3216: /* Read until end of name and terminate it with NUL. */
3217: for (cp = name; 1; cp++) {
3218: if ('\0' == *cp || ' ' == *cp) {
3219: namesz = cp - name;
3220: break;
3221: }
1.121 schwarze 3222: if ('\\' != *cp)
3223: continue;
1.215 schwarze 3224: namesz = cp - name;
3225: if ('{' == cp[1] || '}' == cp[1])
3226: break;
1.121 schwarze 3227: cp++;
3228: if ('\\' == *cp)
3229: continue;
1.224 schwarze 3230: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3231: "%.*s", (int)(cp - name + 1), name);
1.212 schwarze 3232: mandoc_escape((const char **)&cp, NULL, NULL);
3233: break;
1.121 schwarze 3234: }
3235:
3236: /* Read past spaces. */
3237: while (' ' == *cp)
3238: cp++;
3239:
3240: *cpp = cp;
1.212 schwarze 3241: return(namesz);
1.121 schwarze 3242: }
3243:
1.106 kristaps 3244: /*
3245: * Store *string into the user-defined string called *name.
3246: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.193 schwarze 3247: * append == 0: replace mode
3248: * append == 1: single-line append mode
3249: * append == 2: multiline append mode, append '\n' after each call
1.106 kristaps 3250: */
1.94 kristaps 3251: static void
1.106 kristaps 3252: roff_setstr(struct roff *r, const char *name, const char *string,
1.193 schwarze 3253: int append)
1.92 schwarze 3254: {
1.164 kristaps 3255:
3256: roff_setstrn(&r->strtab, name, strlen(name), string,
1.207 schwarze 3257: string ? strlen(string) : 0, append);
1.164 kristaps 3258: }
3259:
3260: static void
1.166 kristaps 3261: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.193 schwarze 3262: const char *string, size_t stringsz, int append)
1.164 kristaps 3263: {
1.166 kristaps 3264: struct roffkv *n;
1.164 kristaps 3265: char *c;
3266: int i;
3267: size_t oldch, newch;
1.92 schwarze 3268:
1.106 kristaps 3269: /* Search for an existing string with the same name. */
1.164 kristaps 3270: n = *r;
3271:
1.211 schwarze 3272: while (n && (namesz != n->key.sz ||
3273: strncmp(n->key.p, name, namesz)))
1.92 schwarze 3274: n = n->next;
1.94 kristaps 3275:
3276: if (NULL == n) {
1.106 kristaps 3277: /* Create a new string table entry. */
1.166 kristaps 3278: n = mandoc_malloc(sizeof(struct roffkv));
3279: n->key.p = mandoc_strndup(name, namesz);
3280: n->key.sz = namesz;
3281: n->val.p = NULL;
3282: n->val.sz = 0;
1.164 kristaps 3283: n->next = *r;
3284: *r = n;
1.193 schwarze 3285: } else if (0 == append) {
1.166 kristaps 3286: free(n->val.p);
3287: n->val.p = NULL;
3288: n->val.sz = 0;
1.106 kristaps 3289: }
3290:
3291: if (NULL == string)
3292: return;
3293:
3294: /*
3295: * One additional byte for the '\n' in multiline mode,
3296: * and one for the terminating '\0'.
3297: */
1.193 schwarze 3298: newch = stringsz + (1 < append ? 2u : 1u);
1.164 kristaps 3299:
1.166 kristaps 3300: if (NULL == n->val.p) {
3301: n->val.p = mandoc_malloc(newch);
3302: *n->val.p = '\0';
1.106 kristaps 3303: oldch = 0;
3304: } else {
1.166 kristaps 3305: oldch = n->val.sz;
3306: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.106 kristaps 3307: }
3308:
3309: /* Skip existing content in the destination buffer. */
1.166 kristaps 3310: c = n->val.p + (int)oldch;
1.106 kristaps 3311:
3312: /* Append new content to the destination buffer. */
1.164 kristaps 3313: i = 0;
3314: while (i < (int)stringsz) {
1.106 kristaps 3315: /*
3316: * Rudimentary roff copy mode:
3317: * Handle escaped backslashes.
3318: */
1.164 kristaps 3319: if ('\\' == string[i] && '\\' == string[i + 1])
3320: i++;
3321: *c++ = string[i++];
1.106 kristaps 3322: }
1.94 kristaps 3323:
1.106 kristaps 3324: /* Append terminating bytes. */
1.193 schwarze 3325: if (1 < append)
1.106 kristaps 3326: *c++ = '\n';
1.163 kristaps 3327:
1.106 kristaps 3328: *c = '\0';
1.166 kristaps 3329: n->val.sz = (int)(c - n->val.p);
1.92 schwarze 3330: }
3331:
1.94 kristaps 3332: static const char *
3333: roff_getstrn(const struct roff *r, const char *name, size_t len)
1.92 schwarze 3334: {
1.166 kristaps 3335: const struct roffkv *n;
1.191 schwarze 3336: int i;
1.92 schwarze 3337:
1.164 kristaps 3338: for (n = r->strtab; n; n = n->next)
1.207 schwarze 3339: if (0 == strncmp(name, n->key.p, len) &&
3340: '\0' == n->key.p[(int)len])
1.166 kristaps 3341: return(n->val.p);
1.191 schwarze 3342:
3343: for (i = 0; i < PREDEFS_MAX; i++)
3344: if (0 == strncmp(name, predefs[i].name, len) &&
3345: '\0' == predefs[i].name[(int)len])
3346: return(predefs[i].str);
1.94 kristaps 3347:
1.157 kristaps 3348: return(NULL);
1.92 schwarze 3349: }
3350:
1.94 kristaps 3351: static void
1.167 kristaps 3352: roff_freestr(struct roffkv *r)
1.92 schwarze 3353: {
1.166 kristaps 3354: struct roffkv *n, *nn;
1.92 schwarze 3355:
1.167 kristaps 3356: for (n = r; n; n = nn) {
1.166 kristaps 3357: free(n->key.p);
3358: free(n->val.p);
1.92 schwarze 3359: nn = n->next;
3360: free(n);
3361: }
1.114 kristaps 3362: }
1.266 schwarze 3363:
3364: /* --- accessors and utility functions ------------------------------------ */
1.114 kristaps 3365:
3366: const struct tbl_span *
3367: roff_span(const struct roff *r)
3368: {
1.207 schwarze 3369:
1.114 kristaps 3370: return(r->tbl ? tbl_span(r->tbl) : NULL);
1.125 kristaps 3371: }
3372:
3373: const struct eqn *
3374: roff_eqn(const struct roff *r)
3375: {
1.207 schwarze 3376:
1.125 kristaps 3377: return(r->last_eqn ? &r->last_eqn->eqn : NULL);
1.164 kristaps 3378: }
3379:
3380: /*
3381: * Duplicate an input string, making the appropriate character
3382: * conversations (as stipulated by `tr') along the way.
3383: * Returns a heap-allocated string with all the replacements made.
3384: */
3385: char *
3386: roff_strdup(const struct roff *r, const char *p)
3387: {
1.166 kristaps 3388: const struct roffkv *cp;
1.164 kristaps 3389: char *res;
3390: const char *pp;
3391: size_t ssz, sz;
3392: enum mandoc_esc esc;
3393:
1.167 kristaps 3394: if (NULL == r->xmbtab && NULL == r->xtab)
1.164 kristaps 3395: return(mandoc_strdup(p));
3396: else if ('\0' == *p)
3397: return(mandoc_strdup(""));
3398:
3399: /*
3400: * Step through each character looking for term matches
3401: * (remember that a `tr' can be invoked with an escape, which is
3402: * a glyph but the escape is multi-character).
3403: * We only do this if the character hash has been initialised
3404: * and the string is >0 length.
3405: */
3406:
3407: res = NULL;
3408: ssz = 0;
3409:
3410: while ('\0' != *p) {
1.167 kristaps 3411: if ('\\' != *p && r->xtab && r->xtab[(int)*p].p) {
3412: sz = r->xtab[(int)*p].sz;
3413: res = mandoc_realloc(res, ssz + sz + 1);
3414: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3415: ssz += sz;
3416: p++;
3417: continue;
3418: } else if ('\\' != *p) {
3419: res = mandoc_realloc(res, ssz + 2);
3420: res[ssz++] = *p++;
3421: continue;
3422: }
3423:
1.164 kristaps 3424: /* Search for term matches. */
1.167 kristaps 3425: for (cp = r->xmbtab; cp; cp = cp->next)
1.166 kristaps 3426: if (0 == strncmp(p, cp->key.p, cp->key.sz))
1.164 kristaps 3427: break;
3428:
3429: if (NULL != cp) {
3430: /*
3431: * A match has been found.
3432: * Append the match to the array and move
3433: * forward by its keysize.
3434: */
1.207 schwarze 3435: res = mandoc_realloc(res,
3436: ssz + cp->val.sz + 1);
1.166 kristaps 3437: memcpy(res + ssz, cp->val.p, cp->val.sz);
3438: ssz += cp->val.sz;
3439: p += (int)cp->key.sz;
1.164 kristaps 3440: continue;
3441: }
3442:
1.167 kristaps 3443: /*
3444: * Handle escapes carefully: we need to copy
3445: * over just the escape itself, or else we might
3446: * do replacements within the escape itself.
3447: * Make sure to pass along the bogus string.
3448: */
3449: pp = p++;
3450: esc = mandoc_escape(&p, NULL, NULL);
3451: if (ESCAPE_ERROR == esc) {
3452: sz = strlen(pp);
1.164 kristaps 3453: res = mandoc_realloc(res, ssz + sz + 1);
3454: memcpy(res + ssz, pp, sz);
1.167 kristaps 3455: break;
1.164 kristaps 3456: }
1.207 schwarze 3457: /*
3458: * We bail out on bad escapes.
1.167 kristaps 3459: * No need to warn: we already did so when
3460: * roff_res() was called.
3461: */
3462: sz = (int)(p - pp);
3463: res = mandoc_realloc(res, ssz + sz + 1);
3464: memcpy(res + ssz, pp, sz);
3465: ssz += sz;
1.164 kristaps 3466: }
3467:
3468: res[(int)ssz] = '\0';
3469: return(res);
1.227 schwarze 3470: }
3471:
3472: int
3473: roff_getformat(const struct roff *r)
3474: {
3475:
3476: return(r->format);
1.174 kristaps 3477: }
3478:
3479: /*
1.207 schwarze 3480: * Find out whether a line is a macro line or not.
1.174 kristaps 3481: * If it is, adjust the current position and return one; if it isn't,
3482: * return zero and don't change the current position.
3483: * If the control character has been set with `.cc', then let that grain
3484: * precedence.
3485: * This is slighly contrary to groff, where using the non-breaking
3486: * control character when `cc' has been invoked will cause the
3487: * non-breaking macro contents to be printed verbatim.
3488: */
3489: int
3490: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
3491: {
3492: int pos;
3493:
3494: pos = *ppos;
3495:
3496: if (0 != r->control && cp[pos] == r->control)
3497: pos++;
3498: else if (0 != r->control)
3499: return(0);
3500: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
3501: pos += 2;
3502: else if ('.' == cp[pos] || '\'' == cp[pos])
3503: pos++;
3504: else
3505: return(0);
3506:
3507: while (' ' == cp[pos] || '\t' == cp[pos])
3508: pos++;
3509:
3510: *ppos = pos;
3511: return(1);
1.74 kristaps 3512: }
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