Annotation of mandoc/roff.c, Revision 1.288
1.288 ! schwarze 1: /* $Id: roff.c,v 1.287 2017/01/10 21:59:47 schwarze Exp $ */
1.1 kristaps 2: /*
1.267 schwarze 3: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.287 schwarze 4: * Copyright (c) 2010-2015, 2017 Ingo Schwarze <schwarze@openbsd.org>
1.1 kristaps 5: *
6: * Permission to use, copy, modify, and distribute this software for any
1.66 kristaps 7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
1.1 kristaps 9: *
1.106 kristaps 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.66 kristaps 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.106 kristaps 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.66 kristaps 13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.1 kristaps 17: */
1.66 kristaps 18: #include "config.h"
1.225 schwarze 19:
20: #include <sys/types.h>
1.30 kristaps 21:
1.67 kristaps 22: #include <assert.h>
1.85 kristaps 23: #include <ctype.h>
1.245 schwarze 24: #include <limits.h>
1.178 schwarze 25: #include <stdio.h>
1.1 kristaps 26: #include <stdlib.h>
1.67 kristaps 27: #include <string.h>
1.1 kristaps 28:
1.67 kristaps 29: #include "mandoc.h"
1.201 schwarze 30: #include "mandoc_aux.h"
1.265 schwarze 31: #include "roff.h"
1.226 schwarze 32: #include "libmandoc.h"
1.266 schwarze 33: #include "roff_int.h"
1.109 kristaps 34: #include "libroff.h"
1.82 kristaps 35:
1.170 schwarze 36: /* Maximum number of string expansions per line, to break infinite loops. */
37: #define EXPAND_LIMIT 1000
38:
1.266 schwarze 39: /* --- data types --------------------------------------------------------- */
40:
1.67 kristaps 41: enum rofft {
1.251 schwarze 42: ROFF_ab,
1.103 kristaps 43: ROFF_ad,
1.251 schwarze 44: ROFF_af,
45: ROFF_aln,
46: ROFF_als,
1.80 kristaps 47: ROFF_am,
1.251 schwarze 48: ROFF_am1,
1.80 kristaps 49: ROFF_ami,
1.251 schwarze 50: ROFF_ami1,
1.193 schwarze 51: ROFF_as,
1.251 schwarze 52: ROFF_as1,
53: ROFF_asciify,
54: ROFF_backtrace,
55: ROFF_bd,
56: ROFF_bleedat,
57: ROFF_blm,
58: ROFF_box,
59: ROFF_boxa,
60: ROFF_bp,
61: ROFF_BP,
62: /* MAN_br, MDOC_br */
63: ROFF_break,
64: ROFF_breakchar,
65: ROFF_brnl,
66: ROFF_brp,
67: ROFF_brpnl,
68: ROFF_c2,
1.174 kristaps 69: ROFF_cc,
1.194 schwarze 70: ROFF_ce,
1.251 schwarze 71: ROFF_cf,
72: ROFF_cflags,
73: ROFF_ch,
74: ROFF_char,
75: ROFF_chop,
76: ROFF_class,
77: ROFF_close,
78: ROFF_CL,
79: ROFF_color,
80: ROFF_composite,
81: ROFF_continue,
82: ROFF_cp,
83: ROFF_cropat,
84: ROFF_cs,
85: ROFF_cu,
86: ROFF_da,
87: ROFF_dch,
88: ROFF_Dd,
1.80 kristaps 89: ROFF_de,
1.251 schwarze 90: ROFF_de1,
91: ROFF_defcolor,
1.80 kristaps 92: ROFF_dei,
1.251 schwarze 93: ROFF_dei1,
94: ROFF_device,
95: ROFF_devicem,
96: ROFF_di,
97: ROFF_do,
1.83 schwarze 98: ROFF_ds,
1.251 schwarze 99: ROFF_ds1,
100: ROFF_dwh,
101: ROFF_dt,
102: ROFF_ec,
103: ROFF_ecr,
104: ROFF_ecs,
1.82 kristaps 105: ROFF_el,
1.251 schwarze 106: ROFF_em,
107: ROFF_EN,
108: ROFF_eo,
109: ROFF_EP,
110: ROFF_EQ,
111: ROFF_errprint,
112: ROFF_ev,
113: ROFF_evc,
114: ROFF_ex,
115: ROFF_fallback,
1.185 schwarze 116: ROFF_fam,
1.251 schwarze 117: ROFF_fc,
118: ROFF_fchar,
119: ROFF_fcolor,
120: ROFF_fdeferlig,
121: ROFF_feature,
122: /* MAN_fi; ignored in mdoc(7) */
123: ROFF_fkern,
124: ROFF_fl,
125: ROFF_flig,
126: ROFF_fp,
127: ROFF_fps,
128: ROFF_fschar,
129: ROFF_fspacewidth,
130: ROFF_fspecial,
131: /* MAN_ft; ignored in mdoc(7) */
132: ROFF_ftr,
133: ROFF_fzoom,
134: ROFF_gcolor,
135: ROFF_hc,
136: ROFF_hcode,
137: ROFF_hidechar,
138: ROFF_hla,
139: ROFF_hlm,
140: ROFF_hpf,
141: ROFF_hpfa,
142: ROFF_hpfcode,
1.186 schwarze 143: ROFF_hw,
1.103 kristaps 144: ROFF_hy,
1.251 schwarze 145: ROFF_hylang,
146: ROFF_hylen,
147: ROFF_hym,
148: ROFF_hypp,
149: ROFF_hys,
1.82 kristaps 150: ROFF_ie,
1.75 kristaps 151: ROFF_if,
1.76 kristaps 152: ROFF_ig,
1.251 schwarze 153: /* MAN_in; ignored in mdoc(7) */
154: ROFF_index,
1.123 schwarze 155: ROFF_it,
1.251 schwarze 156: ROFF_itc,
157: ROFF_IX,
158: ROFF_kern,
159: ROFF_kernafter,
160: ROFF_kernbefore,
161: ROFF_kernpair,
162: ROFF_lc,
163: ROFF_lc_ctype,
164: ROFF_lds,
165: ROFF_length,
166: ROFF_letadj,
167: ROFF_lf,
168: ROFF_lg,
169: ROFF_lhang,
170: ROFF_linetabs,
171: /* MAN_ll, MDOC_ll */
172: ROFF_lnr,
173: ROFF_lnrf,
174: ROFF_lpfx,
175: ROFF_ls,
176: ROFF_lsm,
177: ROFF_lt,
178: ROFF_mc,
179: ROFF_mediasize,
180: ROFF_minss,
181: ROFF_mk,
182: ROFF_mso,
1.256 schwarze 183: ROFF_na,
1.103 kristaps 184: ROFF_ne,
1.251 schwarze 185: /* MAN_nf; ignored in mdoc(7) */
1.103 kristaps 186: ROFF_nh,
1.251 schwarze 187: ROFF_nhychar,
188: ROFF_nm,
189: ROFF_nn,
190: ROFF_nop,
1.104 kristaps 191: ROFF_nr,
1.251 schwarze 192: ROFF_nrf,
193: ROFF_nroff,
1.124 schwarze 194: ROFF_ns,
1.251 schwarze 195: ROFF_nx,
196: ROFF_open,
197: ROFF_opena,
198: ROFF_os,
199: ROFF_output,
200: ROFF_padj,
201: ROFF_papersize,
202: ROFF_pc,
203: ROFF_pev,
204: ROFF_pi,
205: ROFF_PI,
1.229 schwarze 206: ROFF_pl,
1.251 schwarze 207: ROFF_pm,
208: ROFF_pn,
209: ROFF_pnr,
210: ROFF_po,
1.124 schwarze 211: ROFF_ps,
1.251 schwarze 212: ROFF_psbb,
213: ROFF_pshape,
214: ROFF_pso,
215: ROFF_ptr,
216: ROFF_pvs,
217: ROFF_rchar,
218: ROFF_rd,
219: ROFF_recursionlimit,
220: ROFF_return,
221: ROFF_rfschar,
222: ROFF_rhang,
223: ROFF_rj,
1.83 schwarze 224: ROFF_rm,
1.251 schwarze 225: ROFF_rn,
226: ROFF_rnn,
1.203 schwarze 227: ROFF_rr,
1.251 schwarze 228: ROFF_rs,
229: ROFF_rt,
230: ROFF_schar,
231: ROFF_sentchar,
232: ROFF_shc,
233: ROFF_shift,
234: ROFF_sizes,
1.105 kristaps 235: ROFF_so,
1.251 schwarze 236: /* MAN_sp, MDOC_sp */
237: ROFF_spacewidth,
238: ROFF_special,
239: ROFF_spreadwarn,
240: ROFF_ss,
241: ROFF_sty,
242: ROFF_substring,
243: ROFF_sv,
244: ROFF_sy,
245: ROFF_T_,
1.124 schwarze 246: ROFF_ta,
1.251 schwarze 247: ROFF_tc,
248: ROFF_TE,
249: ROFF_TH,
250: ROFF_ti,
251: ROFF_tkf,
252: ROFF_tl,
253: ROFF_tm,
254: ROFF_tm1,
255: ROFF_tmc,
1.83 schwarze 256: ROFF_tr,
1.251 schwarze 257: ROFF_track,
258: ROFF_transchar,
259: ROFF_trf,
260: ROFF_trimat,
261: ROFF_trin,
262: ROFF_trnt,
263: ROFF_troff,
1.109 kristaps 264: ROFF_TS,
1.251 schwarze 265: ROFF_uf,
266: ROFF_ul,
267: ROFF_unformat,
268: ROFF_unwatch,
269: ROFF_unwatchn,
270: ROFF_vpt,
271: ROFF_vs,
272: ROFF_warn,
273: ROFF_warnscale,
274: ROFF_watch,
275: ROFF_watchlength,
276: ROFF_watchn,
277: ROFF_wh,
278: ROFF_while,
279: ROFF_write,
280: ROFF_writec,
281: ROFF_writem,
282: ROFF_xflag,
1.76 kristaps 283: ROFF_cblock,
1.106 kristaps 284: ROFF_USERDEF,
1.67 kristaps 285: ROFF_MAX
286: };
287:
1.147 kristaps 288: /*
1.167 kristaps 289: * An incredibly-simple string buffer.
290: */
1.94 kristaps 291: struct roffstr {
1.167 kristaps 292: char *p; /* nil-terminated buffer */
293: size_t sz; /* saved strlen(p) */
1.166 kristaps 294: };
295:
296: /*
1.167 kristaps 297: * A key-value roffstr pair as part of a singly-linked list.
1.166 kristaps 298: */
299: struct roffkv {
300: struct roffstr key;
301: struct roffstr val;
302: struct roffkv *next; /* next in list */
1.94 kristaps 303: };
304:
1.180 schwarze 305: /*
306: * A single number register as part of a singly-linked list.
307: */
308: struct roffreg {
309: struct roffstr key;
1.181 schwarze 310: int val;
1.180 schwarze 311: struct roffreg *next;
312: };
313:
1.67 kristaps 314: struct roff {
1.128 kristaps 315: struct mparse *parse; /* parse point */
1.67 kristaps 316: struct roffnode *last; /* leaf of stack */
1.223 schwarze 317: int *rstack; /* stack of inverted `ie' values */
1.180 schwarze 318: struct roffreg *regtab; /* number registers */
1.166 kristaps 319: struct roffkv *strtab; /* user-defined strings & macros */
1.167 kristaps 320: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
321: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.106 kristaps 322: const char *current_string; /* value of last called user macro */
1.118 kristaps 323: struct tbl_node *first_tbl; /* first table parsed */
324: struct tbl_node *last_tbl; /* last table parsed */
325: struct tbl_node *tbl; /* current table being parsed */
1.125 kristaps 326: struct eqn_node *last_eqn; /* last equation parsed */
327: struct eqn_node *first_eqn; /* first equation parsed */
328: struct eqn_node *eqn; /* current equation being parsed */
1.230 schwarze 329: int eqn_inline; /* current equation is inline */
1.223 schwarze 330: int options; /* parse options */
331: int rstacksz; /* current size limit of rstack */
332: int rstackpos; /* position in rstack */
1.227 schwarze 333: int format; /* current file in mdoc or man format */
1.273 schwarze 334: int argc; /* number of args of the last macro */
1.223 schwarze 335: char control; /* control character */
1.79 kristaps 336: };
337:
1.67 kristaps 338: struct roffnode {
339: enum rofft tok; /* type of node */
340: struct roffnode *parent; /* up one in stack */
341: int line; /* parse line */
342: int col; /* parse col */
1.106 kristaps 343: char *name; /* node name, e.g. macro name */
1.79 kristaps 344: char *end; /* end-rules: custom token */
345: int endspan; /* end-rules: next-line or infty */
1.198 schwarze 346: int rule; /* current evaluation rule */
1.67 kristaps 347: };
348:
349: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.72 kristaps 350: enum rofft tok, /* tok of macro */ \
1.238 schwarze 351: struct buf *buf, /* input buffer */ \
1.67 kristaps 352: int ln, /* parse line */ \
1.75 kristaps 353: int ppos, /* original pos in buffer */ \
354: int pos, /* current pos in buffer */ \
1.74 kristaps 355: int *offs /* reset offset of buffer data */
1.67 kristaps 356:
357: typedef enum rofferr (*roffproc)(ROFF_ARGS);
358:
359: struct roffmac {
360: const char *name; /* macro name */
1.79 kristaps 361: roffproc proc; /* process new macro */
362: roffproc text; /* process as child text of macro */
363: roffproc sub; /* process as child of macro */
364: int flags;
365: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.85 kristaps 366: struct roffmac *next;
1.67 kristaps 367: };
368:
1.141 kristaps 369: struct predef {
370: const char *name; /* predefined input name */
371: const char *str; /* replacement symbol */
372: };
373:
374: #define PREDEF(__name, __str) \
375: { (__name), (__str) },
376:
1.266 schwarze 377: /* --- function prototypes ------------------------------------------------ */
378:
1.155 kristaps 379: static enum rofft roffhash_find(const char *, size_t);
380: static void roffhash_init(void);
381: static void roffnode_cleanscope(struct roff *);
382: static void roffnode_pop(struct roff *);
383: static void roffnode_push(struct roff *, enum rofft,
384: const char *, int, int);
1.80 kristaps 385: static enum rofferr roff_block(ROFF_ARGS);
386: static enum rofferr roff_block_text(ROFF_ARGS);
387: static enum rofferr roff_block_sub(ROFF_ARGS);
1.251 schwarze 388: static enum rofferr roff_brp(ROFF_ARGS);
1.80 kristaps 389: static enum rofferr roff_cblock(ROFF_ARGS);
1.174 kristaps 390: static enum rofferr roff_cc(ROFF_ARGS);
1.195 schwarze 391: static void roff_ccond(struct roff *, int, int);
1.82 kristaps 392: static enum rofferr roff_cond(ROFF_ARGS);
393: static enum rofferr roff_cond_text(ROFF_ARGS);
394: static enum rofferr roff_cond_sub(ROFF_ARGS);
1.92 schwarze 395: static enum rofferr roff_ds(ROFF_ARGS);
1.238 schwarze 396: static enum rofferr roff_eqndelim(struct roff *, struct buf *, int);
1.271 schwarze 397: static int roff_evalcond(struct roff *r, int, char *, int *);
1.234 kristaps 398: static int roff_evalnum(struct roff *, int,
399: const char *, int *, int *, int);
400: static int roff_evalpar(struct roff *, int,
1.261 schwarze 401: const char *, int *, int *, int);
1.198 schwarze 402: static int roff_evalstrcond(const char *, int *);
1.155 kristaps 403: static void roff_free1(struct roff *);
1.180 schwarze 404: static void roff_freereg(struct roffreg *);
1.167 kristaps 405: static void roff_freestr(struct roffkv *);
1.212 schwarze 406: static size_t roff_getname(struct roff *, char **, int, int);
1.261 schwarze 407: static int roff_getnum(const char *, int *, int *, int);
1.184 schwarze 408: static int roff_getop(const char *, int *, char *);
1.181 schwarze 409: static int roff_getregn(const struct roff *,
410: const char *, size_t);
1.273 schwarze 411: static int roff_getregro(const struct roff *,
412: const char *name);
1.207 schwarze 413: static const char *roff_getstrn(const struct roff *,
1.94 kristaps 414: const char *, size_t);
1.271 schwarze 415: static int roff_hasregn(const struct roff *,
416: const char *, size_t);
1.251 schwarze 417: static enum rofferr roff_insec(ROFF_ARGS);
1.178 schwarze 418: static enum rofferr roff_it(ROFF_ARGS);
1.103 kristaps 419: static enum rofferr roff_line_ignore(ROFF_ARGS);
1.265 schwarze 420: static void roff_man_alloc1(struct roff_man *);
421: static void roff_man_free1(struct roff_man *);
1.89 kristaps 422: static enum rofferr roff_nr(ROFF_ARGS);
1.214 schwarze 423: static enum rofft roff_parse(struct roff *, char *, int *,
424: int, int);
1.238 schwarze 425: static enum rofferr roff_parsetext(struct buf *, int, int *);
426: static enum rofferr roff_res(struct roff *, struct buf *, int, int);
1.122 schwarze 427: static enum rofferr roff_rm(ROFF_ARGS);
1.203 schwarze 428: static enum rofferr roff_rr(ROFF_ARGS);
1.94 kristaps 429: static void roff_setstr(struct roff *,
1.106 kristaps 430: const char *, const char *, int);
1.207 schwarze 431: static void roff_setstrn(struct roffkv **, const char *,
1.164 kristaps 432: size_t, const char *, size_t, int);
1.105 kristaps 433: static enum rofferr roff_so(ROFF_ARGS);
1.164 kristaps 434: static enum rofferr roff_tr(ROFF_ARGS);
1.175 schwarze 435: static enum rofferr roff_Dd(ROFF_ARGS);
436: static enum rofferr roff_TH(ROFF_ARGS);
1.109 kristaps 437: static enum rofferr roff_TE(ROFF_ARGS);
438: static enum rofferr roff_TS(ROFF_ARGS);
1.125 kristaps 439: static enum rofferr roff_EQ(ROFF_ARGS);
440: static enum rofferr roff_EN(ROFF_ARGS);
1.112 kristaps 441: static enum rofferr roff_T_(ROFF_ARGS);
1.251 schwarze 442: static enum rofferr roff_unsupp(ROFF_ARGS);
1.106 kristaps 443: static enum rofferr roff_userdef(ROFF_ARGS);
1.67 kristaps 444:
1.266 schwarze 445: /* --- constant data ------------------------------------------------------ */
446:
1.155 kristaps 447: /* See roffhash_find() */
1.85 kristaps 448:
449: #define ASCII_HI 126
450: #define ASCII_LO 33
451: #define HASHWIDTH (ASCII_HI - ASCII_LO + 1)
452:
1.261 schwarze 453: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
454: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
455:
1.85 kristaps 456: static struct roffmac *hash[HASHWIDTH];
457:
458: static struct roffmac roffs[ROFF_MAX] = {
1.251 schwarze 459: { "ab", roff_unsupp, NULL, NULL, 0, NULL },
1.103 kristaps 460: { "ad", roff_line_ignore, NULL, NULL, 0, NULL },
1.251 schwarze 461: { "af", roff_line_ignore, NULL, NULL, 0, NULL },
462: { "aln", roff_unsupp, NULL, NULL, 0, NULL },
463: { "als", roff_unsupp, NULL, NULL, 0, NULL },
1.85 kristaps 464: { "am", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.251 schwarze 465: { "am1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.85 kristaps 466: { "ami", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.251 schwarze 467: { "ami1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.193 schwarze 468: { "as", roff_ds, NULL, NULL, 0, NULL },
1.251 schwarze 469: { "as1", roff_ds, NULL, NULL, 0, NULL },
470: { "asciify", roff_unsupp, NULL, NULL, 0, NULL },
471: { "backtrace", roff_line_ignore, NULL, NULL, 0, NULL },
472: { "bd", roff_line_ignore, NULL, NULL, 0, NULL },
473: { "bleedat", roff_line_ignore, NULL, NULL, 0, NULL },
474: { "blm", roff_unsupp, NULL, NULL, 0, NULL },
475: { "box", roff_unsupp, NULL, NULL, 0, NULL },
476: { "boxa", roff_unsupp, NULL, NULL, 0, NULL },
477: { "bp", roff_line_ignore, NULL, NULL, 0, NULL },
478: { "BP", roff_unsupp, NULL, NULL, 0, NULL },
479: { "break", roff_unsupp, NULL, NULL, 0, NULL },
480: { "breakchar", roff_line_ignore, NULL, NULL, 0, NULL },
481: { "brnl", roff_line_ignore, NULL, NULL, 0, NULL },
482: { "brp", roff_brp, NULL, NULL, 0, NULL },
483: { "brpnl", roff_line_ignore, NULL, NULL, 0, NULL },
484: { "c2", roff_unsupp, NULL, NULL, 0, NULL },
1.174 kristaps 485: { "cc", roff_cc, NULL, NULL, 0, NULL },
1.194 schwarze 486: { "ce", roff_line_ignore, NULL, NULL, 0, NULL },
1.251 schwarze 487: { "cf", roff_insec, NULL, NULL, 0, NULL },
488: { "cflags", roff_line_ignore, NULL, NULL, 0, NULL },
489: { "ch", roff_line_ignore, NULL, NULL, 0, NULL },
490: { "char", roff_unsupp, NULL, NULL, 0, NULL },
491: { "chop", roff_unsupp, NULL, NULL, 0, NULL },
492: { "class", roff_line_ignore, NULL, NULL, 0, NULL },
493: { "close", roff_insec, NULL, NULL, 0, NULL },
494: { "CL", roff_unsupp, NULL, NULL, 0, NULL },
495: { "color", roff_line_ignore, NULL, NULL, 0, NULL },
496: { "composite", roff_unsupp, NULL, NULL, 0, NULL },
497: { "continue", roff_unsupp, NULL, NULL, 0, NULL },
498: { "cp", roff_line_ignore, NULL, NULL, 0, NULL },
499: { "cropat", roff_line_ignore, NULL, NULL, 0, NULL },
500: { "cs", roff_line_ignore, NULL, NULL, 0, NULL },
501: { "cu", roff_line_ignore, NULL, NULL, 0, NULL },
502: { "da", roff_unsupp, NULL, NULL, 0, NULL },
503: { "dch", roff_unsupp, NULL, NULL, 0, NULL },
504: { "Dd", roff_Dd, NULL, NULL, 0, NULL },
1.85 kristaps 505: { "de", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.251 schwarze 506: { "de1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
507: { "defcolor", roff_line_ignore, NULL, NULL, 0, NULL },
1.85 kristaps 508: { "dei", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.251 schwarze 509: { "dei1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
510: { "device", roff_unsupp, NULL, NULL, 0, NULL },
511: { "devicem", roff_unsupp, NULL, NULL, 0, NULL },
512: { "di", roff_unsupp, NULL, NULL, 0, NULL },
513: { "do", roff_unsupp, NULL, NULL, 0, NULL },
1.92 schwarze 514: { "ds", roff_ds, NULL, NULL, 0, NULL },
1.251 schwarze 515: { "ds1", roff_ds, NULL, NULL, 0, NULL },
516: { "dwh", roff_unsupp, NULL, NULL, 0, NULL },
517: { "dt", roff_unsupp, NULL, NULL, 0, NULL },
518: { "ec", roff_unsupp, NULL, NULL, 0, NULL },
519: { "ecr", roff_unsupp, NULL, NULL, 0, NULL },
520: { "ecs", roff_unsupp, NULL, NULL, 0, NULL },
1.85 kristaps 521: { "el", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
1.251 schwarze 522: { "em", roff_unsupp, NULL, NULL, 0, NULL },
523: { "EN", roff_EN, NULL, NULL, 0, NULL },
524: { "eo", roff_unsupp, NULL, NULL, 0, NULL },
525: { "EP", roff_unsupp, NULL, NULL, 0, NULL },
526: { "EQ", roff_EQ, NULL, NULL, 0, NULL },
527: { "errprint", roff_line_ignore, NULL, NULL, 0, NULL },
528: { "ev", roff_unsupp, NULL, NULL, 0, NULL },
529: { "evc", roff_unsupp, NULL, NULL, 0, NULL },
530: { "ex", roff_unsupp, NULL, NULL, 0, NULL },
531: { "fallback", roff_line_ignore, NULL, NULL, 0, NULL },
1.185 schwarze 532: { "fam", roff_line_ignore, NULL, NULL, 0, NULL },
1.251 schwarze 533: { "fc", roff_unsupp, NULL, NULL, 0, NULL },
534: { "fchar", roff_unsupp, NULL, NULL, 0, NULL },
535: { "fcolor", roff_line_ignore, NULL, NULL, 0, NULL },
536: { "fdeferlig", roff_line_ignore, NULL, NULL, 0, NULL },
537: { "feature", roff_line_ignore, NULL, NULL, 0, NULL },
538: { "fkern", roff_line_ignore, NULL, NULL, 0, NULL },
539: { "fl", roff_line_ignore, NULL, NULL, 0, NULL },
540: { "flig", roff_line_ignore, NULL, NULL, 0, NULL },
541: { "fp", roff_line_ignore, NULL, NULL, 0, NULL },
542: { "fps", roff_line_ignore, NULL, NULL, 0, NULL },
543: { "fschar", roff_unsupp, NULL, NULL, 0, NULL },
544: { "fspacewidth", roff_line_ignore, NULL, NULL, 0, NULL },
545: { "fspecial", roff_line_ignore, NULL, NULL, 0, NULL },
546: { "ftr", roff_line_ignore, NULL, NULL, 0, NULL },
547: { "fzoom", roff_line_ignore, NULL, NULL, 0, NULL },
548: { "gcolor", roff_line_ignore, NULL, NULL, 0, NULL },
549: { "hc", roff_line_ignore, NULL, NULL, 0, NULL },
550: { "hcode", roff_line_ignore, NULL, NULL, 0, NULL },
551: { "hidechar", roff_line_ignore, NULL, NULL, 0, NULL },
552: { "hla", roff_line_ignore, NULL, NULL, 0, NULL },
553: { "hlm", roff_line_ignore, NULL, NULL, 0, NULL },
554: { "hpf", roff_line_ignore, NULL, NULL, 0, NULL },
555: { "hpfa", roff_line_ignore, NULL, NULL, 0, NULL },
556: { "hpfcode", roff_line_ignore, NULL, NULL, 0, NULL },
1.186 schwarze 557: { "hw", roff_line_ignore, NULL, NULL, 0, NULL },
1.103 kristaps 558: { "hy", roff_line_ignore, NULL, NULL, 0, NULL },
1.251 schwarze 559: { "hylang", roff_line_ignore, NULL, NULL, 0, NULL },
560: { "hylen", roff_line_ignore, NULL, NULL, 0, NULL },
561: { "hym", roff_line_ignore, NULL, NULL, 0, NULL },
562: { "hypp", roff_line_ignore, NULL, NULL, 0, NULL },
563: { "hys", roff_line_ignore, NULL, NULL, 0, NULL },
1.85 kristaps 564: { "ie", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
565: { "if", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
566: { "ig", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.251 schwarze 567: { "index", roff_unsupp, NULL, NULL, 0, NULL },
1.178 schwarze 568: { "it", roff_it, NULL, NULL, 0, NULL },
1.251 schwarze 569: { "itc", roff_unsupp, NULL, NULL, 0, NULL },
570: { "IX", roff_line_ignore, NULL, NULL, 0, NULL },
571: { "kern", roff_line_ignore, NULL, NULL, 0, NULL },
572: { "kernafter", roff_line_ignore, NULL, NULL, 0, NULL },
573: { "kernbefore", roff_line_ignore, NULL, NULL, 0, NULL },
574: { "kernpair", roff_line_ignore, NULL, NULL, 0, NULL },
575: { "lc", roff_unsupp, NULL, NULL, 0, NULL },
576: { "lc_ctype", roff_unsupp, NULL, NULL, 0, NULL },
577: { "lds", roff_unsupp, NULL, NULL, 0, NULL },
578: { "length", roff_unsupp, NULL, NULL, 0, NULL },
579: { "letadj", roff_line_ignore, NULL, NULL, 0, NULL },
580: { "lf", roff_insec, NULL, NULL, 0, NULL },
581: { "lg", roff_line_ignore, NULL, NULL, 0, NULL },
582: { "lhang", roff_line_ignore, NULL, NULL, 0, NULL },
583: { "linetabs", roff_unsupp, NULL, NULL, 0, NULL },
584: { "lnr", roff_unsupp, NULL, NULL, 0, NULL },
585: { "lnrf", roff_unsupp, NULL, NULL, 0, NULL },
586: { "lpfx", roff_unsupp, NULL, NULL, 0, NULL },
587: { "ls", roff_line_ignore, NULL, NULL, 0, NULL },
588: { "lsm", roff_unsupp, NULL, NULL, 0, NULL },
589: { "lt", roff_line_ignore, NULL, NULL, 0, NULL },
590: { "mc", roff_line_ignore, NULL, NULL, 0, NULL },
591: { "mediasize", roff_line_ignore, NULL, NULL, 0, NULL },
592: { "minss", roff_line_ignore, NULL, NULL, 0, NULL },
593: { "mk", roff_line_ignore, NULL, NULL, 0, NULL },
594: { "mso", roff_insec, NULL, NULL, 0, NULL },
1.256 schwarze 595: { "na", roff_line_ignore, NULL, NULL, 0, NULL },
1.103 kristaps 596: { "ne", roff_line_ignore, NULL, NULL, 0, NULL },
597: { "nh", roff_line_ignore, NULL, NULL, 0, NULL },
1.251 schwarze 598: { "nhychar", roff_line_ignore, NULL, NULL, 0, NULL },
599: { "nm", roff_unsupp, NULL, NULL, 0, NULL },
600: { "nn", roff_unsupp, NULL, NULL, 0, NULL },
601: { "nop", roff_unsupp, NULL, NULL, 0, NULL },
1.104 kristaps 602: { "nr", roff_nr, NULL, NULL, 0, NULL },
1.251 schwarze 603: { "nrf", roff_unsupp, NULL, NULL, 0, NULL },
604: { "nroff", roff_line_ignore, NULL, NULL, 0, NULL },
1.124 schwarze 605: { "ns", roff_line_ignore, NULL, NULL, 0, NULL },
1.251 schwarze 606: { "nx", roff_insec, NULL, NULL, 0, NULL },
607: { "open", roff_insec, NULL, NULL, 0, NULL },
608: { "opena", roff_insec, NULL, NULL, 0, NULL },
609: { "os", roff_line_ignore, NULL, NULL, 0, NULL },
610: { "output", roff_unsupp, NULL, NULL, 0, NULL },
611: { "padj", roff_line_ignore, NULL, NULL, 0, NULL },
612: { "papersize", roff_line_ignore, NULL, NULL, 0, NULL },
613: { "pc", roff_line_ignore, NULL, NULL, 0, NULL },
614: { "pev", roff_line_ignore, NULL, NULL, 0, NULL },
615: { "pi", roff_insec, NULL, NULL, 0, NULL },
616: { "PI", roff_unsupp, NULL, NULL, 0, NULL },
1.229 schwarze 617: { "pl", roff_line_ignore, NULL, NULL, 0, NULL },
1.251 schwarze 618: { "pm", roff_line_ignore, NULL, NULL, 0, NULL },
619: { "pn", roff_line_ignore, NULL, NULL, 0, NULL },
620: { "pnr", roff_line_ignore, NULL, NULL, 0, NULL },
621: { "po", roff_line_ignore, NULL, NULL, 0, NULL },
1.124 schwarze 622: { "ps", roff_line_ignore, NULL, NULL, 0, NULL },
1.251 schwarze 623: { "psbb", roff_unsupp, NULL, NULL, 0, NULL },
1.255 schwarze 624: { "pshape", roff_unsupp, NULL, NULL, 0, NULL },
1.251 schwarze 625: { "pso", roff_insec, NULL, NULL, 0, NULL },
626: { "ptr", roff_line_ignore, NULL, NULL, 0, NULL },
627: { "pvs", roff_line_ignore, NULL, NULL, 0, NULL },
628: { "rchar", roff_unsupp, NULL, NULL, 0, NULL },
629: { "rd", roff_line_ignore, NULL, NULL, 0, NULL },
630: { "recursionlimit", roff_line_ignore, NULL, NULL, 0, NULL },
631: { "return", roff_unsupp, NULL, NULL, 0, NULL },
632: { "rfschar", roff_unsupp, NULL, NULL, 0, NULL },
633: { "rhang", roff_line_ignore, NULL, NULL, 0, NULL },
634: { "rj", roff_line_ignore, NULL, NULL, 0, NULL },
1.122 schwarze 635: { "rm", roff_rm, NULL, NULL, 0, NULL },
1.251 schwarze 636: { "rn", roff_unsupp, NULL, NULL, 0, NULL },
637: { "rnn", roff_unsupp, NULL, NULL, 0, NULL },
1.203 schwarze 638: { "rr", roff_rr, NULL, NULL, 0, NULL },
1.251 schwarze 639: { "rs", roff_line_ignore, NULL, NULL, 0, NULL },
640: { "rt", roff_line_ignore, NULL, NULL, 0, NULL },
641: { "schar", roff_unsupp, NULL, NULL, 0, NULL },
642: { "sentchar", roff_line_ignore, NULL, NULL, 0, NULL },
643: { "shc", roff_line_ignore, NULL, NULL, 0, NULL },
644: { "shift", roff_unsupp, NULL, NULL, 0, NULL },
645: { "sizes", roff_line_ignore, NULL, NULL, 0, NULL },
1.105 kristaps 646: { "so", roff_so, NULL, NULL, 0, NULL },
1.251 schwarze 647: { "spacewidth", roff_line_ignore, NULL, NULL, 0, NULL },
648: { "special", roff_line_ignore, NULL, NULL, 0, NULL },
649: { "spreadwarn", roff_line_ignore, NULL, NULL, 0, NULL },
650: { "ss", roff_line_ignore, NULL, NULL, 0, NULL },
651: { "sty", roff_line_ignore, NULL, NULL, 0, NULL },
652: { "substring", roff_unsupp, NULL, NULL, 0, NULL },
653: { "sv", roff_line_ignore, NULL, NULL, 0, NULL },
654: { "sy", roff_insec, NULL, NULL, 0, NULL },
655: { "T&", roff_T_, NULL, NULL, 0, NULL },
1.255 schwarze 656: { "ta", roff_unsupp, NULL, NULL, 0, NULL },
1.251 schwarze 657: { "tc", roff_unsupp, NULL, NULL, 0, NULL },
658: { "TE", roff_TE, NULL, NULL, 0, NULL },
659: { "TH", roff_TH, NULL, NULL, 0, NULL },
1.255 schwarze 660: { "ti", roff_unsupp, NULL, NULL, 0, NULL },
1.251 schwarze 661: { "tkf", roff_line_ignore, NULL, NULL, 0, NULL },
662: { "tl", roff_unsupp, NULL, NULL, 0, NULL },
663: { "tm", roff_line_ignore, NULL, NULL, 0, NULL },
664: { "tm1", roff_line_ignore, NULL, NULL, 0, NULL },
665: { "tmc", roff_line_ignore, NULL, NULL, 0, NULL },
1.164 kristaps 666: { "tr", roff_tr, NULL, NULL, 0, NULL },
1.251 schwarze 667: { "track", roff_line_ignore, NULL, NULL, 0, NULL },
668: { "transchar", roff_line_ignore, NULL, NULL, 0, NULL },
669: { "trf", roff_insec, NULL, NULL, 0, NULL },
670: { "trimat", roff_line_ignore, NULL, NULL, 0, NULL },
671: { "trin", roff_unsupp, NULL, NULL, 0, NULL },
672: { "trnt", roff_unsupp, NULL, NULL, 0, NULL },
673: { "troff", roff_line_ignore, NULL, NULL, 0, NULL },
1.109 kristaps 674: { "TS", roff_TS, NULL, NULL, 0, NULL },
1.251 schwarze 675: { "uf", roff_line_ignore, NULL, NULL, 0, NULL },
676: { "ul", roff_line_ignore, NULL, NULL, 0, NULL },
677: { "unformat", roff_unsupp, NULL, NULL, 0, NULL },
678: { "unwatch", roff_line_ignore, NULL, NULL, 0, NULL },
679: { "unwatchn", roff_line_ignore, NULL, NULL, 0, NULL },
680: { "vpt", roff_line_ignore, NULL, NULL, 0, NULL },
681: { "vs", roff_line_ignore, NULL, NULL, 0, NULL },
682: { "warn", roff_line_ignore, NULL, NULL, 0, NULL },
683: { "warnscale", roff_line_ignore, NULL, NULL, 0, NULL },
684: { "watch", roff_line_ignore, NULL, NULL, 0, NULL },
685: { "watchlength", roff_line_ignore, NULL, NULL, 0, NULL },
686: { "watchn", roff_line_ignore, NULL, NULL, 0, NULL },
687: { "wh", roff_unsupp, NULL, NULL, 0, NULL },
688: { "while", roff_unsupp, NULL, NULL, 0, NULL },
689: { "write", roff_insec, NULL, NULL, 0, NULL },
690: { "writec", roff_insec, NULL, NULL, 0, NULL },
691: { "writem", roff_insec, NULL, NULL, 0, NULL },
692: { "xflag", roff_line_ignore, NULL, NULL, 0, NULL },
1.85 kristaps 693: { ".", roff_cblock, NULL, NULL, 0, NULL },
1.106 kristaps 694: { NULL, roff_userdef, NULL, NULL, 0, NULL },
1.67 kristaps 695: };
696:
1.200 schwarze 697: /* not currently implemented: Ds em Eq LP Me PP pp Or Rd Sf SH */
1.175 schwarze 698: const char *const __mdoc_reserved[] = {
699: "Ac", "Ad", "An", "Ao", "Ap", "Aq", "Ar", "At",
700: "Bc", "Bd", "Bf", "Bk", "Bl", "Bo", "Bq",
701: "Brc", "Bro", "Brq", "Bsx", "Bt", "Bx",
702: "Cd", "Cm", "Db", "Dc", "Dd", "Dl", "Do", "Dq",
1.200 schwarze 703: "Dt", "Dv", "Dx", "D1",
704: "Ec", "Ed", "Ef", "Ek", "El", "Em",
705: "En", "Eo", "Er", "Es", "Ev", "Ex",
1.175 schwarze 706: "Fa", "Fc", "Fd", "Fl", "Fn", "Fo", "Fr", "Ft", "Fx",
1.200 schwarze 707: "Hf", "Ic", "In", "It", "Lb", "Li", "Lk", "Lp",
708: "Ms", "Mt", "Nd", "Nm", "No", "Ns", "Nx",
1.175 schwarze 709: "Oc", "Oo", "Op", "Os", "Ot", "Ox",
1.200 schwarze 710: "Pa", "Pc", "Pf", "Po", "Pp", "Pq",
711: "Qc", "Ql", "Qo", "Qq", "Re", "Rs", "Rv",
712: "Sc", "Sh", "Sm", "So", "Sq",
1.175 schwarze 713: "Ss", "St", "Sx", "Sy",
714: "Ta", "Tn", "Ud", "Ux", "Va", "Vt", "Xc", "Xo", "Xr",
1.200 schwarze 715: "%A", "%B", "%C", "%D", "%I", "%J", "%N", "%O",
1.175 schwarze 716: "%P", "%Q", "%R", "%T", "%U", "%V",
717: NULL
718: };
719:
1.200 schwarze 720: /* not currently implemented: BT DE DS ME MT PT SY TQ YS */
1.175 schwarze 721: const char *const __man_reserved[] = {
1.200 schwarze 722: "AT", "B", "BI", "BR", "DT",
723: "EE", "EN", "EQ", "EX", "HP", "I", "IB", "IP", "IR",
724: "LP", "OP", "P", "PD", "PP",
725: "R", "RB", "RE", "RI", "RS", "SB", "SH", "SM", "SS",
726: "TE", "TH", "TP", "TS", "T&", "UC", "UE", "UR",
1.175 schwarze 727: NULL
728: };
729:
1.141 kristaps 730: /* Array of injected predefined strings. */
731: #define PREDEFS_MAX 38
732: static const struct predef predefs[PREDEFS_MAX] = {
733: #include "predefs.in"
734: };
735:
1.155 kristaps 736: /* See roffhash_find() */
1.85 kristaps 737: #define ROFF_HASH(p) (p[0] - ASCII_LO)
738:
1.178 schwarze 739: static int roffit_lines; /* number of lines to delay */
740: static char *roffit_macro; /* nil-terminated macro line */
741:
1.207 schwarze 742:
1.266 schwarze 743: /* --- request table ------------------------------------------------------ */
744:
1.85 kristaps 745: static void
1.155 kristaps 746: roffhash_init(void)
1.85 kristaps 747: {
748: struct roffmac *n;
749: int buc, i;
750:
1.106 kristaps 751: for (i = 0; i < (int)ROFF_USERDEF; i++) {
1.85 kristaps 752: assert(roffs[i].name[0] >= ASCII_LO);
753: assert(roffs[i].name[0] <= ASCII_HI);
754:
755: buc = ROFF_HASH(roffs[i].name);
756:
757: if (NULL != (n = hash[buc])) {
758: for ( ; n->next; n = n->next)
759: /* Do nothing. */ ;
760: n->next = &roffs[i];
761: } else
762: hash[buc] = &roffs[i];
763: }
764: }
765:
1.67 kristaps 766: /*
767: * Look up a roff token by its name. Returns ROFF_MAX if no macro by
768: * the nil-terminated string name could be found.
769: */
770: static enum rofft
1.155 kristaps 771: roffhash_find(const char *p, size_t s)
1.67 kristaps 772: {
1.85 kristaps 773: int buc;
774: struct roffmac *n;
1.67 kristaps 775:
1.85 kristaps 776: /*
777: * libroff has an extremely simple hashtable, for the time
778: * being, which simply keys on the first character, which must
779: * be printable, then walks a chain. It works well enough until
780: * optimised.
781: */
782:
783: if (p[0] < ASCII_LO || p[0] > ASCII_HI)
1.277 schwarze 784: return ROFF_MAX;
1.85 kristaps 785:
786: buc = ROFF_HASH(p);
787:
788: if (NULL == (n = hash[buc]))
1.277 schwarze 789: return ROFF_MAX;
1.85 kristaps 790: for ( ; n; n = n->next)
1.106 kristaps 791: if (0 == strncmp(n->name, p, s) && '\0' == n->name[(int)s])
1.277 schwarze 792: return (enum rofft)(n - roffs);
1.67 kristaps 793:
1.277 schwarze 794: return ROFF_MAX;
1.67 kristaps 795: }
796:
1.266 schwarze 797: /* --- stack of request blocks -------------------------------------------- */
798:
1.67 kristaps 799: /*
800: * Pop the current node off of the stack of roff instructions currently
801: * pending.
802: */
803: static void
804: roffnode_pop(struct roff *r)
805: {
806: struct roffnode *p;
807:
1.75 kristaps 808: assert(r->last);
1.207 schwarze 809: p = r->last;
1.82 kristaps 810:
1.75 kristaps 811: r->last = r->last->parent;
1.106 kristaps 812: free(p->name);
813: free(p->end);
1.67 kristaps 814: free(p);
815: }
816:
817: /*
818: * Push a roff node onto the instruction stack. This must later be
819: * removed with roffnode_pop().
820: */
1.98 schwarze 821: static void
1.106 kristaps 822: roffnode_push(struct roff *r, enum rofft tok, const char *name,
823: int line, int col)
1.67 kristaps 824: {
825: struct roffnode *p;
826:
1.98 schwarze 827: p = mandoc_calloc(1, sizeof(struct roffnode));
1.67 kristaps 828: p->tok = tok;
1.106 kristaps 829: if (name)
830: p->name = mandoc_strdup(name);
1.67 kristaps 831: p->parent = r->last;
832: p->line = line;
833: p->col = col;
1.198 schwarze 834: p->rule = p->parent ? p->parent->rule : 0;
1.67 kristaps 835:
836: r->last = p;
837: }
838:
1.266 schwarze 839: /* --- roff parser state data management ---------------------------------- */
840:
1.67 kristaps 841: static void
842: roff_free1(struct roff *r)
843: {
1.176 schwarze 844: struct tbl_node *tbl;
1.125 kristaps 845: struct eqn_node *e;
1.167 kristaps 846: int i;
1.67 kristaps 847:
1.176 schwarze 848: while (NULL != (tbl = r->first_tbl)) {
849: r->first_tbl = tbl->next;
850: tbl_free(tbl);
1.109 kristaps 851: }
1.113 kristaps 852: r->first_tbl = r->last_tbl = r->tbl = NULL;
853:
1.125 kristaps 854: while (NULL != (e = r->first_eqn)) {
855: r->first_eqn = e->next;
856: eqn_free(e);
857: }
858: r->first_eqn = r->last_eqn = r->eqn = NULL;
859:
1.67 kristaps 860: while (r->last)
861: roffnode_pop(r);
1.109 kristaps 862:
1.223 schwarze 863: free (r->rstack);
864: r->rstack = NULL;
865: r->rstacksz = 0;
866: r->rstackpos = -1;
867:
868: roff_freereg(r->regtab);
869: r->regtab = NULL;
870:
1.167 kristaps 871: roff_freestr(r->strtab);
872: roff_freestr(r->xmbtab);
873: r->strtab = r->xmbtab = NULL;
874:
875: if (r->xtab)
876: for (i = 0; i < 128; i++)
877: free(r->xtab[i].p);
878: free(r->xtab);
879: r->xtab = NULL;
1.67 kristaps 880: }
881:
882: void
883: roff_reset(struct roff *r)
884: {
885:
886: roff_free1(r);
1.227 schwarze 887: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.174 kristaps 888: r->control = 0;
1.67 kristaps 889: }
890:
891: void
892: roff_free(struct roff *r)
893: {
894:
895: roff_free1(r);
896: free(r);
897: }
898:
899: struct roff *
1.279 schwarze 900: roff_alloc(struct mparse *parse, int options)
1.67 kristaps 901: {
902: struct roff *r;
903:
1.98 schwarze 904: r = mandoc_calloc(1, sizeof(struct roff));
1.128 kristaps 905: r->parse = parse;
1.199 schwarze 906: r->options = options;
1.227 schwarze 907: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.82 kristaps 908: r->rstackpos = -1;
1.207 schwarze 909:
1.155 kristaps 910: roffhash_init();
1.141 kristaps 911:
1.277 schwarze 912: return r;
1.265 schwarze 913: }
914:
1.266 schwarze 915: /* --- syntax tree state data management ---------------------------------- */
916:
1.265 schwarze 917: static void
918: roff_man_free1(struct roff_man *man)
919: {
920:
1.266 schwarze 921: if (man->first != NULL)
922: roff_node_delete(man, man->first);
1.265 schwarze 923: free(man->meta.msec);
924: free(man->meta.vol);
925: free(man->meta.os);
926: free(man->meta.arch);
927: free(man->meta.title);
928: free(man->meta.name);
929: free(man->meta.date);
930: }
931:
932: static void
933: roff_man_alloc1(struct roff_man *man)
934: {
935:
936: memset(&man->meta, 0, sizeof(man->meta));
937: man->first = mandoc_calloc(1, sizeof(*man->first));
938: man->first->type = ROFFT_ROOT;
939: man->last = man->first;
940: man->last_es = NULL;
941: man->flags = 0;
942: man->macroset = MACROSET_NONE;
943: man->lastsec = man->lastnamed = SEC_NONE;
944: man->next = ROFF_NEXT_CHILD;
945: }
946:
947: void
948: roff_man_reset(struct roff_man *man)
949: {
950:
951: roff_man_free1(man);
952: roff_man_alloc1(man);
953: }
954:
955: void
956: roff_man_free(struct roff_man *man)
957: {
958:
959: roff_man_free1(man);
960: free(man);
961: }
962:
963: struct roff_man *
964: roff_man_alloc(struct roff *roff, struct mparse *parse,
965: const char *defos, int quick)
966: {
967: struct roff_man *man;
968:
969: man = mandoc_calloc(1, sizeof(*man));
970: man->parse = parse;
971: man->roff = roff;
972: man->defos = defos;
973: man->quick = quick;
974: roff_man_alloc1(man);
1.277 schwarze 975: return man;
1.67 kristaps 976: }
977:
1.266 schwarze 978: /* --- syntax tree handling ----------------------------------------------- */
979:
980: struct roff_node *
981: roff_node_alloc(struct roff_man *man, int line, int pos,
982: enum roff_type type, int tok)
983: {
984: struct roff_node *n;
985:
986: n = mandoc_calloc(1, sizeof(*n));
987: n->line = line;
988: n->pos = pos;
989: n->tok = tok;
990: n->type = type;
991: n->sec = man->lastsec;
992:
993: if (man->flags & MDOC_SYNOPSIS)
1.285 schwarze 994: n->flags |= NODE_SYNPRETTY;
1.266 schwarze 995: else
1.285 schwarze 996: n->flags &= ~NODE_SYNPRETTY;
1.266 schwarze 997: if (man->flags & MDOC_NEWLINE)
1.285 schwarze 998: n->flags |= NODE_LINE;
1.266 schwarze 999: man->flags &= ~MDOC_NEWLINE;
1000:
1.277 schwarze 1001: return n;
1.266 schwarze 1002: }
1003:
1004: void
1005: roff_node_append(struct roff_man *man, struct roff_node *n)
1006: {
1007:
1008: switch (man->next) {
1009: case ROFF_NEXT_SIBLING:
1.281 schwarze 1010: if (man->last->next != NULL) {
1011: n->next = man->last->next;
1012: man->last->next->prev = n;
1013: } else
1014: man->last->parent->last = n;
1.266 schwarze 1015: man->last->next = n;
1016: n->prev = man->last;
1017: n->parent = man->last->parent;
1018: break;
1019: case ROFF_NEXT_CHILD:
1.287 schwarze 1020: if (man->last->child != NULL) {
1021: n->next = man->last->child;
1022: man->last->child->prev = n;
1023: } else
1024: man->last->last = n;
1.266 schwarze 1025: man->last->child = n;
1026: n->parent = man->last;
1027: break;
1028: default:
1029: abort();
1030: }
1.282 schwarze 1031: man->last = n;
1.266 schwarze 1032:
1033: switch (n->type) {
1034: case ROFFT_HEAD:
1035: n->parent->head = n;
1036: break;
1037: case ROFFT_BODY:
1.282 schwarze 1038: if (n->end != ENDBODY_NOT)
1039: return;
1.266 schwarze 1040: n->parent->body = n;
1041: break;
1042: case ROFFT_TAIL:
1043: n->parent->tail = n;
1044: break;
1045: default:
1.282 schwarze 1046: return;
1.266 schwarze 1047: }
1.282 schwarze 1048:
1049: /*
1050: * Copy over the normalised-data pointer of our parent. Not
1051: * everybody has one, but copying a null pointer is fine.
1052: */
1053:
1054: n->norm = n->parent->norm;
1055: assert(n->parent->type == ROFFT_BLOCK);
1.266 schwarze 1056: }
1057:
1.267 schwarze 1058: void
1059: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
1060: {
1061: struct roff_node *n;
1062:
1063: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
1064: n->string = roff_strdup(man->roff, word);
1065: roff_node_append(man, n);
1.286 schwarze 1066: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 1067: man->next = ROFF_NEXT_SIBLING;
1068: }
1069:
1070: void
1071: roff_word_append(struct roff_man *man, const char *word)
1072: {
1073: struct roff_node *n;
1074: char *addstr, *newstr;
1075:
1076: n = man->last;
1077: addstr = roff_strdup(man->roff, word);
1078: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
1079: free(addstr);
1080: free(n->string);
1081: n->string = newstr;
1082: man->next = ROFF_NEXT_SIBLING;
1.268 schwarze 1083: }
1084:
1085: void
1086: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
1087: {
1088: struct roff_node *n;
1089:
1090: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
1091: roff_node_append(man, n);
1092: man->next = ROFF_NEXT_CHILD;
1093: }
1094:
1095: struct roff_node *
1096: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
1097: {
1098: struct roff_node *n;
1099:
1100: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
1101: roff_node_append(man, n);
1102: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1103: return n;
1.267 schwarze 1104: }
1105:
1.266 schwarze 1106: struct roff_node *
1107: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
1108: {
1109: struct roff_node *n;
1110:
1111: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
1112: roff_node_append(man, n);
1113: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1114: return n;
1.266 schwarze 1115: }
1116:
1117: struct roff_node *
1118: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1119: {
1120: struct roff_node *n;
1121:
1122: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1123: roff_node_append(man, n);
1124: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1125: return n;
1.267 schwarze 1126: }
1127:
1128: void
1129: roff_addeqn(struct roff_man *man, const struct eqn *eqn)
1130: {
1131: struct roff_node *n;
1132:
1133: n = roff_node_alloc(man, eqn->ln, eqn->pos, ROFFT_EQN, TOKEN_NONE);
1134: n->eqn = eqn;
1135: if (eqn->ln > man->last->line)
1.285 schwarze 1136: n->flags |= NODE_LINE;
1.267 schwarze 1137: roff_node_append(man, n);
1138: man->next = ROFF_NEXT_SIBLING;
1139: }
1140:
1141: void
1142: roff_addtbl(struct roff_man *man, const struct tbl_span *tbl)
1143: {
1144: struct roff_node *n;
1145:
1146: if (man->macroset == MACROSET_MAN)
1147: man_breakscope(man, TOKEN_NONE);
1148: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
1149: n->span = tbl;
1150: roff_node_append(man, n);
1.286 schwarze 1151: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 1152: man->next = ROFF_NEXT_SIBLING;
1.266 schwarze 1153: }
1154:
1155: void
1156: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1157: {
1158:
1159: /* Adjust siblings. */
1160:
1161: if (n->prev)
1162: n->prev->next = n->next;
1163: if (n->next)
1164: n->next->prev = n->prev;
1165:
1166: /* Adjust parent. */
1167:
1168: if (n->parent != NULL) {
1169: if (n->parent->child == n)
1170: n->parent->child = n->next;
1171: if (n->parent->last == n)
1172: n->parent->last = n->prev;
1173: }
1174:
1175: /* Adjust parse point. */
1176:
1177: if (man == NULL)
1178: return;
1179: if (man->last == n) {
1180: if (n->prev == NULL) {
1181: man->last = n->parent;
1182: man->next = ROFF_NEXT_CHILD;
1183: } else {
1184: man->last = n->prev;
1185: man->next = ROFF_NEXT_SIBLING;
1186: }
1187: }
1188: if (man->first == n)
1189: man->first = NULL;
1190: }
1191:
1192: void
1193: roff_node_free(struct roff_node *n)
1194: {
1195:
1196: if (n->args != NULL)
1197: mdoc_argv_free(n->args);
1198: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1199: free(n->norm);
1200: free(n->string);
1201: free(n);
1202: }
1203:
1204: void
1205: roff_node_delete(struct roff_man *man, struct roff_node *n)
1206: {
1207:
1208: while (n->child != NULL)
1209: roff_node_delete(man, n->child);
1210: roff_node_unlink(man, n);
1211: roff_node_free(n);
1.269 schwarze 1212: }
1213:
1214: void
1215: deroff(char **dest, const struct roff_node *n)
1216: {
1217: char *cp;
1218: size_t sz;
1219:
1220: if (n->type != ROFFT_TEXT) {
1221: for (n = n->child; n != NULL; n = n->next)
1222: deroff(dest, n);
1223: return;
1224: }
1225:
1.288 ! schwarze 1226: /* Skip leading whitespace. */
1.269 schwarze 1227:
1.288 ! schwarze 1228: for (cp = n->string; *cp != '\0'; cp++) {
! 1229: if (cp[0] == '\\' && strchr(" %&0^|~", cp[1]) != NULL)
1.269 schwarze 1230: cp++;
1.288 ! schwarze 1231: else if ( ! isspace((unsigned char)*cp))
1.269 schwarze 1232: break;
1233: }
1234:
1235: /* Skip trailing whitespace. */
1236:
1237: for (sz = strlen(cp); sz; sz--)
1238: if ( ! isspace((unsigned char)cp[sz-1]))
1239: break;
1240:
1241: /* Skip empty strings. */
1242:
1243: if (sz == 0)
1244: return;
1245:
1246: if (*dest == NULL) {
1247: *dest = mandoc_strndup(cp, sz);
1248: return;
1249: }
1250:
1251: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1252: free(*dest);
1253: *dest = cp;
1.266 schwarze 1254: }
1255:
1256: /* --- main functions of the roff parser ---------------------------------- */
1257:
1.94 kristaps 1258: /*
1.206 schwarze 1259: * In the current line, expand escape sequences that tend to get
1260: * used in numerical expressions and conditional requests.
1261: * Also check the syntax of the remaining escape sequences.
1.154 kristaps 1262: */
1.172 schwarze 1263: static enum rofferr
1.238 schwarze 1264: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.94 kristaps 1265: {
1.208 schwarze 1266: char ubuf[24]; /* buffer to print the number */
1.205 schwarze 1267: const char *start; /* start of the string to process */
1.209 schwarze 1268: char *stesc; /* start of an escape sequence ('\\') */
1.108 schwarze 1269: const char *stnam; /* start of the name, after "[(*" */
1270: const char *cp; /* end of the name, e.g. before ']' */
1271: const char *res; /* the string to be substituted */
1.238 schwarze 1272: char *nbuf; /* new buffer to copy buf->buf to */
1.181 schwarze 1273: size_t maxl; /* expected length of the escape name */
1274: size_t naml; /* actual length of the escape name */
1.237 schwarze 1275: enum mandoc_esc esc; /* type of the escape sequence */
1276: int inaml; /* length returned from mandoc_escape() */
1.181 schwarze 1277: int expand_count; /* to avoid infinite loops */
1.206 schwarze 1278: int npos; /* position in numeric expression */
1.218 schwarze 1279: int arg_complete; /* argument not interrupted by eol */
1.206 schwarze 1280: char term; /* character terminating the escape */
1.94 kristaps 1281:
1.170 schwarze 1282: expand_count = 0;
1.238 schwarze 1283: start = buf->buf + pos;
1.205 schwarze 1284: stesc = strchr(start, '\0') - 1;
1285: while (stesc-- > start) {
1.170 schwarze 1286:
1.205 schwarze 1287: /* Search backwards for the next backslash. */
1288:
1.238 schwarze 1289: if (*stesc != '\\')
1.205 schwarze 1290: continue;
1291:
1292: /* If it is escaped, skip it. */
1293:
1294: for (cp = stesc - 1; cp >= start; cp--)
1.238 schwarze 1295: if (*cp != '\\')
1.205 schwarze 1296: break;
1297:
1.238 schwarze 1298: if ((stesc - cp) % 2 == 0) {
1.209 schwarze 1299: stesc = (char *)cp;
1.205 schwarze 1300: continue;
1301: }
1.108 schwarze 1302:
1.206 schwarze 1303: /* Decide whether to expand or to check only. */
1.108 schwarze 1304:
1.206 schwarze 1305: term = '\0';
1.205 schwarze 1306: cp = stesc + 1;
1.181 schwarze 1307: switch (*cp) {
1.207 schwarze 1308: case '*':
1.181 schwarze 1309: res = NULL;
1310: break;
1.207 schwarze 1311: case 'B':
1312: case 'w':
1.206 schwarze 1313: term = cp[1];
1314: /* FALLTHROUGH */
1.207 schwarze 1315: case 'n':
1.181 schwarze 1316: res = ubuf;
1317: break;
1318: default:
1.237 schwarze 1319: esc = mandoc_escape(&cp, &stnam, &inaml);
1320: if (esc == ESCAPE_ERROR ||
1321: (esc == ESCAPE_SPECIAL &&
1.279 schwarze 1322: mchars_spec2cp(stnam, inaml) < 0))
1.219 schwarze 1323: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.238 schwarze 1324: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1325: "%.*s", (int)(cp - stesc), stesc);
1.205 schwarze 1326: continue;
1.152 kristaps 1327: }
1328:
1.205 schwarze 1329: if (EXPAND_LIMIT < ++expand_count) {
1330: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.238 schwarze 1331: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1332: return ROFF_IGN;
1.205 schwarze 1333: }
1.108 schwarze 1334:
1335: /*
1336: * The third character decides the length
1.181 schwarze 1337: * of the name of the string or register.
1.108 schwarze 1338: * Save a pointer to the name.
1339: */
1340:
1.238 schwarze 1341: if (term == '\0') {
1.206 schwarze 1342: switch (*++cp) {
1.207 schwarze 1343: case '\0':
1.206 schwarze 1344: maxl = 0;
1345: break;
1.207 schwarze 1346: case '(':
1.206 schwarze 1347: cp++;
1348: maxl = 2;
1349: break;
1.207 schwarze 1350: case '[':
1.206 schwarze 1351: cp++;
1352: term = ']';
1353: maxl = 0;
1354: break;
1355: default:
1356: maxl = 1;
1357: break;
1358: }
1359: } else {
1360: cp += 2;
1.94 kristaps 1361: maxl = 0;
1362: }
1.108 schwarze 1363: stnam = cp;
1.94 kristaps 1364:
1.108 schwarze 1365: /* Advance to the end of the name. */
1.94 kristaps 1366:
1.253 schwarze 1367: naml = 0;
1.218 schwarze 1368: arg_complete = 1;
1.253 schwarze 1369: while (maxl == 0 || naml < maxl) {
1.238 schwarze 1370: if (*cp == '\0') {
1.219 schwarze 1371: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 1372: ln, (int)(stesc - buf->buf), stesc);
1.218 schwarze 1373: arg_complete = 0;
1.206 schwarze 1374: break;
1.153 kristaps 1375: }
1.238 schwarze 1376: if (maxl == 0 && *cp == term) {
1.206 schwarze 1377: cp++;
1.253 schwarze 1378: break;
1379: }
1380: if (*cp++ != '\\' || stesc[1] != 'w') {
1381: naml++;
1382: continue;
1383: }
1384: switch (mandoc_escape(&cp, NULL, NULL)) {
1385: case ESCAPE_SPECIAL:
1386: case ESCAPE_UNICODE:
1387: case ESCAPE_NUMBERED:
1388: case ESCAPE_OVERSTRIKE:
1389: naml++;
1390: break;
1391: default:
1.94 kristaps 1392: break;
1.206 schwarze 1393: }
1.94 kristaps 1394: }
1395:
1.108 schwarze 1396: /*
1397: * Retrieve the replacement string; if it is
1398: * undefined, resume searching for escapes.
1399: */
1400:
1.206 schwarze 1401: switch (stesc[1]) {
1.207 schwarze 1402: case '*':
1.218 schwarze 1403: if (arg_complete)
1404: res = roff_getstrn(r, stnam, naml);
1.206 schwarze 1405: break;
1.207 schwarze 1406: case 'B':
1.206 schwarze 1407: npos = 0;
1.218 schwarze 1408: ubuf[0] = arg_complete &&
1.261 schwarze 1409: roff_evalnum(r, ln, stnam, &npos,
1410: NULL, ROFFNUM_SCALE) &&
1.218 schwarze 1411: stnam + npos + 1 == cp ? '1' : '0';
1.206 schwarze 1412: ubuf[1] = '\0';
1413: break;
1.207 schwarze 1414: case 'n':
1.218 schwarze 1415: if (arg_complete)
1416: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1417: roff_getregn(r, stnam, naml));
1418: else
1419: ubuf[0] = '\0';
1.206 schwarze 1420: break;
1.207 schwarze 1421: case 'w':
1.218 schwarze 1422: /* use even incomplete args */
1.208 schwarze 1423: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.206 schwarze 1424: 24 * (int)naml);
1425: break;
1426: }
1.94 kristaps 1427:
1.238 schwarze 1428: if (res == NULL) {
1.219 schwarze 1429: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1430: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1431: "%.*s", (int)naml, stnam);
1.142 kristaps 1432: res = "";
1.246 schwarze 1433: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1434: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1435: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1436: return ROFF_IGN;
1.94 kristaps 1437: }
1438:
1.108 schwarze 1439: /* Replace the escape sequence by the string. */
1440:
1.209 schwarze 1441: *stesc = '\0';
1.238 schwarze 1442: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1443: buf->buf, res, cp) + 1;
1.94 kristaps 1444:
1.205 schwarze 1445: /* Prepare for the next replacement. */
1.94 kristaps 1446:
1.205 schwarze 1447: start = nbuf + pos;
1.238 schwarze 1448: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1449: free(buf->buf);
1450: buf->buf = nbuf;
1.154 kristaps 1451: }
1.277 schwarze 1452: return ROFF_CONT;
1.154 kristaps 1453: }
1454:
1455: /*
1.275 schwarze 1456: * Process text streams.
1.154 kristaps 1457: */
1458: static enum rofferr
1.238 schwarze 1459: roff_parsetext(struct buf *buf, int pos, int *offs)
1.154 kristaps 1460: {
1461: size_t sz;
1462: const char *start;
1.178 schwarze 1463: char *p;
1464: int isz;
1.154 kristaps 1465: enum mandoc_esc esc;
1466:
1.275 schwarze 1467: /* Spring the input line trap. */
1468:
1469: if (roffit_lines == 1) {
1470: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1471: free(buf->buf);
1472: buf->buf = p;
1473: buf->sz = isz + 1;
1474: *offs = 0;
1475: free(roffit_macro);
1476: roffit_lines = 0;
1.277 schwarze 1477: return ROFF_REPARSE;
1.275 schwarze 1478: } else if (roffit_lines > 1)
1479: --roffit_lines;
1480:
1481: /* Convert all breakable hyphens into ASCII_HYPH. */
1482:
1.238 schwarze 1483: start = p = buf->buf + pos;
1.154 kristaps 1484:
1.238 schwarze 1485: while (*p != '\0') {
1.154 kristaps 1486: sz = strcspn(p, "-\\");
1487: p += sz;
1488:
1.238 schwarze 1489: if (*p == '\0')
1.159 kristaps 1490: break;
1491:
1.238 schwarze 1492: if (*p == '\\') {
1.154 kristaps 1493: /* Skip over escapes. */
1494: p++;
1.189 schwarze 1495: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.238 schwarze 1496: if (esc == ESCAPE_ERROR)
1.154 kristaps 1497: break;
1.264 schwarze 1498: while (*p == '-')
1499: p++;
1.155 kristaps 1500: continue;
1.159 kristaps 1501: } else if (p == start) {
1.158 kristaps 1502: p++;
1.155 kristaps 1503: continue;
1.158 kristaps 1504: }
1.155 kristaps 1505:
1.171 schwarze 1506: if (isalpha((unsigned char)p[-1]) &&
1507: isalpha((unsigned char)p[1]))
1.155 kristaps 1508: *p = ASCII_HYPH;
1509: p++;
1.94 kristaps 1510: }
1.277 schwarze 1511: return ROFF_CONT;
1.94 kristaps 1512: }
1513:
1.67 kristaps 1514: enum rofferr
1.238 schwarze 1515: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.67 kristaps 1516: {
1517: enum rofft t;
1.109 kristaps 1518: enum rofferr e;
1.238 schwarze 1519: int pos; /* parse point */
1.243 schwarze 1520: int spos; /* saved parse point for messages */
1.238 schwarze 1521: int ppos; /* original offset in buf->buf */
1522: int ctl; /* macro line (boolean) */
1523:
1524: ppos = pos = *offs;
1.79 kristaps 1525:
1.230 schwarze 1526: /* Handle in-line equation delimiters. */
1527:
1.236 schwarze 1528: if (r->tbl == NULL &&
1529: r->last_eqn != NULL && r->last_eqn->delim &&
1.230 schwarze 1530: (r->eqn == NULL || r->eqn_inline)) {
1.238 schwarze 1531: e = roff_eqndelim(r, buf, pos);
1.230 schwarze 1532: if (e == ROFF_REPARSE)
1.277 schwarze 1533: return e;
1.230 schwarze 1534: assert(e == ROFF_CONT);
1535: }
1536:
1537: /* Expand some escape sequences. */
1.94 kristaps 1538:
1.238 schwarze 1539: e = roff_res(r, buf, ln, pos);
1540: if (e == ROFF_IGN)
1.277 schwarze 1541: return e;
1.238 schwarze 1542: assert(e == ROFF_CONT);
1.94 kristaps 1543:
1.238 schwarze 1544: ctl = roff_getcontrol(r, buf->buf, &pos);
1.130 kristaps 1545:
1.94 kristaps 1546: /*
1.79 kristaps 1547: * First, if a scope is open and we're not a macro, pass the
1.252 schwarze 1548: * text through the macro's filter.
1549: * Equations process all content themselves.
1550: * Tables process almost all content themselves, but we want
1551: * to warn about macros before passing it there.
1.79 kristaps 1552: */
1.74 kristaps 1553:
1.252 schwarze 1554: if (r->last != NULL && ! ctl) {
1.78 kristaps 1555: t = r->last->tok;
1556: assert(roffs[t].text);
1.238 schwarze 1557: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1558: assert(e == ROFF_IGN || e == ROFF_CONT);
1559: if (e != ROFF_CONT)
1.277 schwarze 1560: return e;
1.182 schwarze 1561: }
1.252 schwarze 1562: if (r->eqn != NULL)
1.277 schwarze 1563: return eqn_read(&r->eqn, ln, buf->buf, ppos, offs);
1.252 schwarze 1564: if (r->tbl != NULL && ( ! ctl || buf->buf[pos] == '\0'))
1.277 schwarze 1565: return tbl_read(r->tbl, ln, buf->buf, ppos);
1.252 schwarze 1566: if ( ! ctl)
1.277 schwarze 1567: return roff_parsetext(buf, pos, offs);
1.228 schwarze 1568:
1569: /* Skip empty request lines. */
1570:
1.238 schwarze 1571: if (buf->buf[pos] == '"') {
1.228 schwarze 1572: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1573: ln, pos, NULL);
1.277 schwarze 1574: return ROFF_IGN;
1.238 schwarze 1575: } else if (buf->buf[pos] == '\0')
1.277 schwarze 1576: return ROFF_IGN;
1.67 kristaps 1577:
1.79 kristaps 1578: /*
1579: * If a scope is open, go to the child handler for that macro,
1580: * as it may want to preprocess before doing anything with it.
1.125 kristaps 1581: * Don't do so if an equation is open.
1.79 kristaps 1582: */
1.78 kristaps 1583:
1.79 kristaps 1584: if (r->last) {
1585: t = r->last->tok;
1586: assert(roffs[t].sub);
1.277 schwarze 1587: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1588: }
1.78 kristaps 1589:
1.243 schwarze 1590: /* No scope is open. This is a new request or macro. */
1591:
1592: spos = pos;
1593: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1594:
1595: /* Tables ignore most macros. */
1596:
1597: if (r->tbl != NULL && (t == ROFF_MAX || t == ROFF_TS)) {
1598: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1599: ln, pos, buf->buf + spos);
1.257 schwarze 1600: if (t == ROFF_TS)
1.277 schwarze 1601: return ROFF_IGN;
1.257 schwarze 1602: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1603: pos++;
1604: while (buf->buf[pos] != '\0' && buf->buf[pos] == ' ')
1605: pos++;
1.277 schwarze 1606: return tbl_read(r->tbl, ln, buf->buf, pos);
1.243 schwarze 1607: }
1608:
1.79 kristaps 1609: /*
1.243 schwarze 1610: * This is neither a roff request nor a user-defined macro.
1611: * Let the standard macro set parsers handle it.
1.79 kristaps 1612: */
1.67 kristaps 1613:
1.243 schwarze 1614: if (t == ROFF_MAX)
1.277 schwarze 1615: return ROFF_CONT;
1.243 schwarze 1616:
1617: /* Execute a roff request or a user defined macro. */
1.67 kristaps 1618:
1.75 kristaps 1619: assert(roffs[t].proc);
1.277 schwarze 1620: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.74 kristaps 1621: }
1622:
1.117 kristaps 1623: void
1.74 kristaps 1624: roff_endparse(struct roff *r)
1625: {
1626:
1.110 kristaps 1627: if (r->last)
1.221 schwarze 1628: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1629: r->last->line, r->last->col,
1630: roffs[r->last->tok].name);
1.117 kristaps 1631:
1.125 kristaps 1632: if (r->eqn) {
1.221 schwarze 1633: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1634: r->eqn->eqn.ln, r->eqn->eqn.pos, "EQ");
1.151 kristaps 1635: eqn_end(&r->eqn);
1.125 kristaps 1636: }
1637:
1.117 kristaps 1638: if (r->tbl) {
1.221 schwarze 1639: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1640: r->tbl->line, r->tbl->pos, "TS");
1.151 kristaps 1641: tbl_end(&r->tbl);
1.117 kristaps 1642: }
1.67 kristaps 1643: }
1644:
1645: /*
1646: * Parse a roff node's type from the input buffer. This must be in the
1647: * form of ".foo xxx" in the usual way.
1648: */
1649: static enum rofft
1.214 schwarze 1650: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.67 kristaps 1651: {
1.214 schwarze 1652: char *cp;
1.106 kristaps 1653: const char *mac;
1654: size_t maclen;
1.67 kristaps 1655: enum rofft t;
1656:
1.214 schwarze 1657: cp = buf + *pos;
1658:
1659: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.277 schwarze 1660: return ROFF_MAX;
1.67 kristaps 1661:
1.214 schwarze 1662: mac = cp;
1663: maclen = roff_getname(r, &cp, ln, ppos);
1.67 kristaps 1664:
1.106 kristaps 1665: t = (r->current_string = roff_getstrn(r, mac, maclen))
1.155 kristaps 1666: ? ROFF_USERDEF : roffhash_find(mac, maclen);
1.67 kristaps 1667:
1.214 schwarze 1668: if (ROFF_MAX != t)
1669: *pos = cp - buf;
1.67 kristaps 1670:
1.277 schwarze 1671: return t;
1.67 kristaps 1672: }
1673:
1.266 schwarze 1674: /* --- handling of request blocks ----------------------------------------- */
1675:
1.67 kristaps 1676: static enum rofferr
1.76 kristaps 1677: roff_cblock(ROFF_ARGS)
1.67 kristaps 1678: {
1679:
1.79 kristaps 1680: /*
1681: * A block-close `..' should only be invoked as a child of an
1682: * ignore macro, otherwise raise a warning and just ignore it.
1683: */
1684:
1.238 schwarze 1685: if (r->last == NULL) {
1.221 schwarze 1686: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1687: ln, ppos, "..");
1.277 schwarze 1688: return ROFF_IGN;
1.76 kristaps 1689: }
1.67 kristaps 1690:
1.81 kristaps 1691: switch (r->last->tok) {
1.207 schwarze 1692: case ROFF_am:
1.220 schwarze 1693: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.207 schwarze 1694: case ROFF_ami:
1695: case ROFF_de:
1.108 schwarze 1696: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.207 schwarze 1697: case ROFF_dei:
1698: case ROFF_ig:
1.81 kristaps 1699: break;
1700: default:
1.221 schwarze 1701: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1702: ln, ppos, "..");
1.277 schwarze 1703: return ROFF_IGN;
1.76 kristaps 1704: }
1.67 kristaps 1705:
1.238 schwarze 1706: if (buf->buf[pos] != '\0')
1.217 schwarze 1707: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 1708: ".. %s", buf->buf + pos);
1.71 kristaps 1709:
1710: roffnode_pop(r);
1.76 kristaps 1711: roffnode_cleanscope(r);
1.277 schwarze 1712: return ROFF_IGN;
1.71 kristaps 1713:
1.67 kristaps 1714: }
1715:
1.76 kristaps 1716: static void
1717: roffnode_cleanscope(struct roff *r)
1.67 kristaps 1718: {
1719:
1.76 kristaps 1720: while (r->last) {
1.173 schwarze 1721: if (--r->last->endspan != 0)
1.76 kristaps 1722: break;
1723: roffnode_pop(r);
1724: }
1.67 kristaps 1725: }
1726:
1.195 schwarze 1727: static void
1728: roff_ccond(struct roff *r, int ln, int ppos)
1.74 kristaps 1729: {
1730:
1.76 kristaps 1731: if (NULL == r->last) {
1.221 schwarze 1732: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1733: ln, ppos, "\\}");
1.195 schwarze 1734: return;
1.76 kristaps 1735: }
1736:
1.82 kristaps 1737: switch (r->last->tok) {
1.207 schwarze 1738: case ROFF_el:
1739: case ROFF_ie:
1740: case ROFF_if:
1.82 kristaps 1741: break;
1742: default:
1.221 schwarze 1743: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1744: ln, ppos, "\\}");
1.195 schwarze 1745: return;
1.75 kristaps 1746: }
1747:
1.76 kristaps 1748: if (r->last->endspan > -1) {
1.221 schwarze 1749: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1750: ln, ppos, "\\}");
1.195 schwarze 1751: return;
1.76 kristaps 1752: }
1753:
1.75 kristaps 1754: roffnode_pop(r);
1.76 kristaps 1755: roffnode_cleanscope(r);
1.195 schwarze 1756: return;
1.76 kristaps 1757: }
1758:
1759: static enum rofferr
1.80 kristaps 1760: roff_block(ROFF_ARGS)
1.76 kristaps 1761: {
1.220 schwarze 1762: const char *name;
1763: char *iname, *cp;
1.213 schwarze 1764: size_t namesz;
1.106 kristaps 1765:
1.220 schwarze 1766: /* Ignore groff compatibility mode for now. */
1.76 kristaps 1767:
1.238 schwarze 1768: if (tok == ROFF_de1)
1.220 schwarze 1769: tok = ROFF_de;
1.251 schwarze 1770: else if (tok == ROFF_dei1)
1771: tok = ROFF_dei;
1.238 schwarze 1772: else if (tok == ROFF_am1)
1.220 schwarze 1773: tok = ROFF_am;
1.251 schwarze 1774: else if (tok == ROFF_ami1)
1775: tok = ROFF_ami;
1.220 schwarze 1776:
1777: /* Parse the macro name argument. */
1778:
1.238 schwarze 1779: cp = buf->buf + pos;
1780: if (tok == ROFF_ig) {
1.220 schwarze 1781: iname = NULL;
1782: namesz = 0;
1783: } else {
1784: iname = cp;
1785: namesz = roff_getname(r, &cp, ln, ppos);
1786: iname[namesz] = '\0';
1787: }
1.107 kristaps 1788:
1.220 schwarze 1789: /* Resolve the macro name argument if it is indirect. */
1.107 kristaps 1790:
1.238 schwarze 1791: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1792: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.220 schwarze 1793: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1794: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1795: "%.*s", (int)namesz, iname);
1796: namesz = 0;
1797: } else
1798: namesz = strlen(name);
1799: } else
1800: name = iname;
1.107 kristaps 1801:
1.238 schwarze 1802: if (namesz == 0 && tok != ROFF_ig) {
1.220 schwarze 1803: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1804: ln, ppos, roffs[tok].name);
1.277 schwarze 1805: return ROFF_IGN;
1.220 schwarze 1806: }
1.80 kristaps 1807:
1.106 kristaps 1808: roffnode_push(r, tok, name, ln, ppos);
1809:
1810: /*
1811: * At the beginning of a `de' macro, clear the existing string
1812: * with the same name, if there is one. New content will be
1.193 schwarze 1813: * appended from roff_block_text() in multiline mode.
1.106 kristaps 1814: */
1.107 kristaps 1815:
1.238 schwarze 1816: if (tok == ROFF_de || tok == ROFF_dei)
1.213 schwarze 1817: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.76 kristaps 1818:
1.238 schwarze 1819: if (*cp == '\0')
1.277 schwarze 1820: return ROFF_IGN;
1.78 kristaps 1821:
1.220 schwarze 1822: /* Get the custom end marker. */
1.107 kristaps 1823:
1.220 schwarze 1824: iname = cp;
1.213 schwarze 1825: namesz = roff_getname(r, &cp, ln, ppos);
1.220 schwarze 1826:
1827: /* Resolve the end marker if it is indirect. */
1828:
1.238 schwarze 1829: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1830: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.220 schwarze 1831: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1832: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1833: "%.*s", (int)namesz, iname);
1834: namesz = 0;
1835: } else
1836: namesz = strlen(name);
1837: } else
1838: name = iname;
1839:
1.213 schwarze 1840: if (namesz)
1841: r->last->end = mandoc_strndup(name, namesz);
1.78 kristaps 1842:
1.238 schwarze 1843: if (*cp != '\0')
1.217 schwarze 1844: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1845: ln, pos, ".%s ... %s", roffs[tok].name, cp);
1.74 kristaps 1846:
1.277 schwarze 1847: return ROFF_IGN;
1.78 kristaps 1848: }
1849:
1850: static enum rofferr
1.80 kristaps 1851: roff_block_sub(ROFF_ARGS)
1.79 kristaps 1852: {
1853: enum rofft t;
1854: int i, j;
1855:
1856: /*
1857: * First check whether a custom macro exists at this level. If
1858: * it does, then check against it. This is some of groff's
1859: * stranger behaviours. If we encountered a custom end-scope
1860: * tag and that tag also happens to be a "real" macro, then we
1861: * need to try interpreting it again as a real macro. If it's
1862: * not, then return ignore. Else continue.
1863: */
1864:
1865: if (r->last->end) {
1.130 kristaps 1866: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.238 schwarze 1867: if (buf->buf[i] != r->last->end[j])
1.79 kristaps 1868: break;
1869:
1.238 schwarze 1870: if (r->last->end[j] == '\0' &&
1871: (buf->buf[i] == '\0' ||
1872: buf->buf[i] == ' ' ||
1873: buf->buf[i] == '\t')) {
1.79 kristaps 1874: roffnode_pop(r);
1875: roffnode_cleanscope(r);
1876:
1.238 schwarze 1877: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.130 kristaps 1878: i++;
1879:
1880: pos = i;
1.238 schwarze 1881: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1882: ROFF_MAX)
1.277 schwarze 1883: return ROFF_RERUN;
1884: return ROFF_IGN;
1.79 kristaps 1885: }
1886: }
1887:
1888: /*
1889: * If we have no custom end-query or lookup failed, then try
1890: * pulling it out of the hashtable.
1891: */
1892:
1.238 schwarze 1893: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.79 kristaps 1894:
1.238 schwarze 1895: if (t != ROFF_cblock) {
1896: if (tok != ROFF_ig)
1897: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.277 schwarze 1898: return ROFF_IGN;
1.106 kristaps 1899: }
1.79 kristaps 1900:
1901: assert(roffs[t].proc);
1.277 schwarze 1902: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1903: }
1904:
1905: static enum rofferr
1.80 kristaps 1906: roff_block_text(ROFF_ARGS)
1.78 kristaps 1907: {
1908:
1.238 schwarze 1909: if (tok != ROFF_ig)
1910: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.106 kristaps 1911:
1.277 schwarze 1912: return ROFF_IGN;
1.78 kristaps 1913: }
1914:
1915: static enum rofferr
1.82 kristaps 1916: roff_cond_sub(ROFF_ARGS)
1917: {
1918: enum rofft t;
1.139 kristaps 1919: char *ep;
1.198 schwarze 1920: int rr;
1.82 kristaps 1921:
1922: rr = r->last->rule;
1.139 kristaps 1923: roffnode_cleanscope(r);
1.238 schwarze 1924: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.82 kristaps 1925:
1.139 kristaps 1926: /*
1.177 schwarze 1927: * Fully handle known macros when they are structurally
1928: * required or when the conditional evaluated to true.
1.87 kristaps 1929: */
1930:
1.238 schwarze 1931: if ((t != ROFF_MAX) &&
1932: (rr || roffs[t].flags & ROFFMAC_STRUCT)) {
1.177 schwarze 1933: assert(roffs[t].proc);
1.277 schwarze 1934: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.177 schwarze 1935: }
1.144 kristaps 1936:
1.196 schwarze 1937: /*
1938: * If `\}' occurs on a macro line without a preceding macro,
1939: * drop the line completely.
1940: */
1941:
1.238 schwarze 1942: ep = buf->buf + pos;
1943: if (ep[0] == '\\' && ep[1] == '}')
1.198 schwarze 1944: rr = 0;
1.196 schwarze 1945:
1.177 schwarze 1946: /* Always check for the closing delimiter `\}'. */
1.144 kristaps 1947:
1.238 schwarze 1948: while ((ep = strchr(ep, '\\')) != NULL) {
1949: if (*(++ep) == '}') {
1.197 schwarze 1950: *ep = '&';
1.238 schwarze 1951: roff_ccond(r, ln, ep - buf->buf - 1);
1.197 schwarze 1952: }
1.247 schwarze 1953: if (*ep != '\0')
1954: ++ep;
1.177 schwarze 1955: }
1.277 schwarze 1956: return rr ? ROFF_CONT : ROFF_IGN;
1.82 kristaps 1957: }
1958:
1959: static enum rofferr
1960: roff_cond_text(ROFF_ARGS)
1.78 kristaps 1961: {
1.140 kristaps 1962: char *ep;
1.198 schwarze 1963: int rr;
1.82 kristaps 1964:
1965: rr = r->last->rule;
1.140 kristaps 1966: roffnode_cleanscope(r);
1.82 kristaps 1967:
1.238 schwarze 1968: ep = buf->buf + pos;
1969: while ((ep = strchr(ep, '\\')) != NULL) {
1970: if (*(++ep) == '}') {
1.197 schwarze 1971: *ep = '&';
1.238 schwarze 1972: roff_ccond(r, ln, ep - buf->buf - 1);
1.197 schwarze 1973: }
1.247 schwarze 1974: if (*ep != '\0')
1975: ++ep;
1.78 kristaps 1976: }
1.277 schwarze 1977: return rr ? ROFF_CONT : ROFF_IGN;
1.74 kristaps 1978: }
1979:
1.266 schwarze 1980: /* --- handling of numeric and conditional expressions -------------------- */
1981:
1.204 schwarze 1982: /*
1983: * Parse a single signed integer number. Stop at the first non-digit.
1984: * If there is at least one digit, return success and advance the
1985: * parse point, else return failure and let the parse point unchanged.
1986: * Ignore overflows, treat them just like the C language.
1987: */
1.184 schwarze 1988: static int
1.261 schwarze 1989: roff_getnum(const char *v, int *pos, int *res, int flags)
1.184 schwarze 1990: {
1.261 schwarze 1991: int myres, scaled, n, p;
1.206 schwarze 1992:
1993: if (NULL == res)
1994: res = &myres;
1.184 schwarze 1995:
1996: p = *pos;
1997: n = v[p] == '-';
1.261 schwarze 1998: if (n || v[p] == '+')
1.184 schwarze 1999: p++;
2000:
1.261 schwarze 2001: if (flags & ROFFNUM_WHITE)
2002: while (isspace((unsigned char)v[p]))
2003: p++;
2004:
1.184 schwarze 2005: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.204 schwarze 2006: *res = 10 * *res + v[p] - '0';
1.184 schwarze 2007: if (p == *pos + n)
2008: return 0;
2009:
2010: if (n)
2011: *res = -*res;
2012:
1.254 schwarze 2013: /* Each number may be followed by one optional scaling unit. */
2014:
2015: switch (v[p]) {
2016: case 'f':
1.261 schwarze 2017: scaled = *res * 65536;
1.254 schwarze 2018: break;
2019: case 'i':
1.261 schwarze 2020: scaled = *res * 240;
1.254 schwarze 2021: break;
2022: case 'c':
1.261 schwarze 2023: scaled = *res * 240 / 2.54;
1.254 schwarze 2024: break;
2025: case 'v':
2026: case 'P':
1.261 schwarze 2027: scaled = *res * 40;
1.254 schwarze 2028: break;
2029: case 'm':
2030: case 'n':
1.261 schwarze 2031: scaled = *res * 24;
1.254 schwarze 2032: break;
2033: case 'p':
1.261 schwarze 2034: scaled = *res * 10 / 3;
1.254 schwarze 2035: break;
2036: case 'u':
1.261 schwarze 2037: scaled = *res;
1.254 schwarze 2038: break;
2039: case 'M':
1.261 schwarze 2040: scaled = *res * 6 / 25;
1.254 schwarze 2041: break;
2042: default:
1.261 schwarze 2043: scaled = *res;
1.254 schwarze 2044: p--;
2045: break;
2046: }
1.261 schwarze 2047: if (flags & ROFFNUM_SCALE)
2048: *res = scaled;
1.254 schwarze 2049:
2050: *pos = p + 1;
1.277 schwarze 2051: return 1;
1.184 schwarze 2052: }
2053:
1.198 schwarze 2054: /*
2055: * Evaluate a string comparison condition.
2056: * The first character is the delimiter.
2057: * Succeed if the string up to its second occurrence
2058: * matches the string up to its third occurence.
2059: * Advance the cursor after the third occurrence
2060: * or lacking that, to the end of the line.
2061: */
2062: static int
2063: roff_evalstrcond(const char *v, int *pos)
2064: {
2065: const char *s1, *s2, *s3;
2066: int match;
2067:
2068: match = 0;
2069: s1 = v + *pos; /* initial delimiter */
2070: s2 = s1 + 1; /* for scanning the first string */
2071: s3 = strchr(s2, *s1); /* for scanning the second string */
2072:
2073: if (NULL == s3) /* found no middle delimiter */
2074: goto out;
2075:
2076: while ('\0' != *++s3) {
2077: if (*s2 != *s3) { /* mismatch */
2078: s3 = strchr(s3, *s1);
2079: break;
2080: }
2081: if (*s3 == *s1) { /* found the final delimiter */
2082: match = 1;
2083: break;
2084: }
2085: s2++;
2086: }
2087:
2088: out:
2089: if (NULL == s3)
2090: s3 = strchr(s2, '\0');
1.242 schwarze 2091: else if (*s3 != '\0')
1.198 schwarze 2092: s3++;
2093: *pos = s3 - v;
1.277 schwarze 2094: return match;
1.198 schwarze 2095: }
2096:
1.204 schwarze 2097: /*
2098: * Evaluate an optionally negated single character, numerical,
2099: * or string condition.
2100: */
1.198 schwarze 2101: static int
1.271 schwarze 2102: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.88 kristaps 2103: {
1.271 schwarze 2104: char *cp, *name;
2105: size_t sz;
1.241 schwarze 2106: int number, savepos, wanttrue;
1.88 kristaps 2107:
1.198 schwarze 2108: if ('!' == v[*pos]) {
2109: wanttrue = 0;
2110: (*pos)++;
2111: } else
2112: wanttrue = 1;
2113:
1.88 kristaps 2114: switch (v[*pos]) {
1.240 schwarze 2115: case '\0':
1.277 schwarze 2116: return 0;
1.207 schwarze 2117: case 'n':
2118: case 'o':
1.88 kristaps 2119: (*pos)++;
1.277 schwarze 2120: return wanttrue;
1.207 schwarze 2121: case 'c':
2122: case 'd':
2123: case 'e':
2124: case 't':
1.239 schwarze 2125: case 'v':
1.88 kristaps 2126: (*pos)++;
1.277 schwarze 2127: return !wanttrue;
1.271 schwarze 2128: case 'r':
2129: cp = name = v + ++*pos;
2130: sz = roff_getname(r, &cp, ln, *pos);
2131: *pos = cp - v;
1.277 schwarze 2132: return (sz && roff_hasregn(r, name, sz)) == wanttrue;
1.88 kristaps 2133: default:
2134: break;
2135: }
2136:
1.241 schwarze 2137: savepos = *pos;
1.261 schwarze 2138: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.277 schwarze 2139: return (number > 0) == wanttrue;
1.241 schwarze 2140: else if (*pos == savepos)
1.277 schwarze 2141: return roff_evalstrcond(v, pos) == wanttrue;
1.204 schwarze 2142: else
1.277 schwarze 2143: return 0;
1.88 kristaps 2144: }
2145:
1.74 kristaps 2146: static enum rofferr
1.103 kristaps 2147: roff_line_ignore(ROFF_ARGS)
1.89 kristaps 2148: {
1.123 schwarze 2149:
1.277 schwarze 2150: return ROFF_IGN;
1.89 kristaps 2151: }
2152:
1.104 kristaps 2153: static enum rofferr
1.251 schwarze 2154: roff_insec(ROFF_ARGS)
2155: {
2156:
2157: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
2158: ln, ppos, roffs[tok].name);
1.277 schwarze 2159: return ROFF_IGN;
1.251 schwarze 2160: }
2161:
2162: static enum rofferr
2163: roff_unsupp(ROFF_ARGS)
2164: {
2165:
2166: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
2167: ln, ppos, roffs[tok].name);
1.277 schwarze 2168: return ROFF_IGN;
1.251 schwarze 2169: }
2170:
2171: static enum rofferr
1.82 kristaps 2172: roff_cond(ROFF_ARGS)
1.74 kristaps 2173: {
1.173 schwarze 2174:
2175: roffnode_push(r, tok, NULL, ln, ppos);
1.74 kristaps 2176:
1.207 schwarze 2177: /*
1.134 kristaps 2178: * An `.el' has no conditional body: it will consume the value
2179: * of the current rstack entry set in prior `ie' calls or
1.207 schwarze 2180: * defaults to DENY.
1.134 kristaps 2181: *
2182: * If we're not an `el', however, then evaluate the conditional.
2183: */
1.133 kristaps 2184:
1.238 schwarze 2185: r->last->rule = tok == ROFF_el ?
1.207 schwarze 2186: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.238 schwarze 2187: roff_evalcond(r, ln, buf->buf, &pos);
1.77 kristaps 2188:
1.134 kristaps 2189: /*
2190: * An if-else will put the NEGATION of the current evaluated
2191: * conditional into the stack of rules.
2192: */
2193:
1.238 schwarze 2194: if (tok == ROFF_ie) {
1.223 schwarze 2195: if (r->rstackpos + 1 == r->rstacksz) {
2196: r->rstacksz += 16;
2197: r->rstack = mandoc_reallocarray(r->rstack,
2198: r->rstacksz, sizeof(int));
1.134 kristaps 2199: }
1.198 schwarze 2200: r->rstack[++r->rstackpos] = !r->last->rule;
1.82 kristaps 2201: }
1.88 kristaps 2202:
2203: /* If the parent has false as its rule, then so do we. */
2204:
1.198 schwarze 2205: if (r->last->parent && !r->last->parent->rule)
2206: r->last->rule = 0;
1.88 kristaps 2207:
2208: /*
1.173 schwarze 2209: * Determine scope.
2210: * If there is nothing on the line after the conditional,
2211: * not even whitespace, use next-line scope.
1.88 kristaps 2212: */
1.74 kristaps 2213:
1.238 schwarze 2214: if (buf->buf[pos] == '\0') {
1.173 schwarze 2215: r->last->endspan = 2;
2216: goto out;
2217: }
2218:
1.238 schwarze 2219: while (buf->buf[pos] == ' ')
1.173 schwarze 2220: pos++;
2221:
2222: /* An opening brace requests multiline scope. */
1.75 kristaps 2223:
1.238 schwarze 2224: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.75 kristaps 2225: r->last->endspan = -1;
2226: pos += 2;
1.272 schwarze 2227: while (buf->buf[pos] == ' ')
2228: pos++;
1.173 schwarze 2229: goto out;
1.207 schwarze 2230: }
1.74 kristaps 2231:
1.77 kristaps 2232: /*
1.173 schwarze 2233: * Anything else following the conditional causes
2234: * single-line scope. Warn if the scope contains
2235: * nothing but trailing whitespace.
1.77 kristaps 2236: */
2237:
1.238 schwarze 2238: if (buf->buf[pos] == '\0')
1.216 schwarze 2239: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
2240: ln, ppos, roffs[tok].name);
1.77 kristaps 2241:
1.173 schwarze 2242: r->last->endspan = 1;
1.74 kristaps 2243:
1.173 schwarze 2244: out:
1.75 kristaps 2245: *offs = pos;
1.277 schwarze 2246: return ROFF_RERUN;
1.83 schwarze 2247: }
2248:
2249: static enum rofferr
1.92 schwarze 2250: roff_ds(ROFF_ARGS)
2251: {
1.212 schwarze 2252: char *string;
2253: const char *name;
2254: size_t namesz;
1.96 kristaps 2255:
1.251 schwarze 2256: /* Ignore groff compatibility mode for now. */
2257:
2258: if (tok == ROFF_ds1)
2259: tok = ROFF_ds;
2260: else if (tok == ROFF_as1)
2261: tok = ROFF_as;
2262:
1.96 kristaps 2263: /*
1.212 schwarze 2264: * The first word is the name of the string.
2265: * If it is empty or terminated by an escape sequence,
2266: * abort the `ds' request without defining anything.
1.96 kristaps 2267: */
1.92 schwarze 2268:
1.238 schwarze 2269: name = string = buf->buf + pos;
2270: if (*name == '\0')
1.277 schwarze 2271: return ROFF_IGN;
1.92 schwarze 2272:
1.212 schwarze 2273: namesz = roff_getname(r, &string, ln, pos);
1.238 schwarze 2274: if (name[namesz] == '\\')
1.277 schwarze 2275: return ROFF_IGN;
1.212 schwarze 2276:
2277: /* Read past the initial double-quote, if any. */
1.238 schwarze 2278: if (*string == '"')
1.92 schwarze 2279: string++;
2280:
1.96 kristaps 2281: /* The rest is the value. */
1.212 schwarze 2282: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2283: ROFF_as == tok);
1.277 schwarze 2284: return ROFF_IGN;
1.92 schwarze 2285: }
2286:
1.204 schwarze 2287: /*
2288: * Parse a single operator, one or two characters long.
2289: * If the operator is recognized, return success and advance the
2290: * parse point, else return failure and let the parse point unchanged.
2291: */
2292: static int
2293: roff_getop(const char *v, int *pos, char *res)
2294: {
2295:
2296: *res = v[*pos];
2297:
2298: switch (*res) {
1.207 schwarze 2299: case '+':
2300: case '-':
2301: case '*':
2302: case '/':
2303: case '%':
2304: case '&':
2305: case ':':
1.204 schwarze 2306: break;
2307: case '<':
2308: switch (v[*pos + 1]) {
1.207 schwarze 2309: case '=':
1.204 schwarze 2310: *res = 'l';
2311: (*pos)++;
2312: break;
1.207 schwarze 2313: case '>':
1.204 schwarze 2314: *res = '!';
2315: (*pos)++;
2316: break;
1.207 schwarze 2317: case '?':
1.204 schwarze 2318: *res = 'i';
2319: (*pos)++;
2320: break;
2321: default:
2322: break;
2323: }
2324: break;
2325: case '>':
2326: switch (v[*pos + 1]) {
1.207 schwarze 2327: case '=':
1.204 schwarze 2328: *res = 'g';
2329: (*pos)++;
2330: break;
1.207 schwarze 2331: case '?':
1.204 schwarze 2332: *res = 'a';
2333: (*pos)++;
2334: break;
2335: default:
2336: break;
2337: }
2338: break;
2339: case '=':
2340: if ('=' == v[*pos + 1])
2341: (*pos)++;
2342: break;
2343: default:
1.277 schwarze 2344: return 0;
1.204 schwarze 2345: }
2346: (*pos)++;
2347:
1.277 schwarze 2348: return *res;
1.204 schwarze 2349: }
2350:
2351: /*
2352: * Evaluate either a parenthesized numeric expression
2353: * or a single signed integer number.
2354: */
2355: static int
1.235 schwarze 2356: roff_evalpar(struct roff *r, int ln,
1.261 schwarze 2357: const char *v, int *pos, int *res, int flags)
1.204 schwarze 2358: {
2359:
2360: if ('(' != v[*pos])
1.277 schwarze 2361: return roff_getnum(v, pos, res, flags);
1.204 schwarze 2362:
2363: (*pos)++;
1.261 schwarze 2364: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.277 schwarze 2365: return 0;
1.204 schwarze 2366:
1.206 schwarze 2367: /*
2368: * Omission of the closing parenthesis
2369: * is an error in validation mode,
2370: * but ignored in evaluation mode.
2371: */
2372:
1.204 schwarze 2373: if (')' == v[*pos])
2374: (*pos)++;
1.206 schwarze 2375: else if (NULL == res)
1.277 schwarze 2376: return 0;
1.204 schwarze 2377:
1.277 schwarze 2378: return 1;
1.204 schwarze 2379: }
2380:
2381: /*
2382: * Evaluate a complete numeric expression.
2383: * Proceed left to right, there is no concept of precedence.
2384: */
2385: static int
1.235 schwarze 2386: roff_evalnum(struct roff *r, int ln, const char *v,
1.261 schwarze 2387: int *pos, int *res, int flags)
1.204 schwarze 2388: {
2389: int mypos, operand2;
2390: char operator;
2391:
2392: if (NULL == pos) {
2393: mypos = 0;
2394: pos = &mypos;
2395: }
2396:
1.261 schwarze 2397: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2398: while (isspace((unsigned char)v[*pos]))
2399: (*pos)++;
2400:
1.261 schwarze 2401: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.277 schwarze 2402: return 0;
1.204 schwarze 2403:
2404: while (1) {
1.261 schwarze 2405: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2406: while (isspace((unsigned char)v[*pos]))
2407: (*pos)++;
2408:
2409: if ( ! roff_getop(v, pos, &operator))
2410: break;
2411:
1.261 schwarze 2412: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2413: while (isspace((unsigned char)v[*pos]))
2414: (*pos)++;
2415:
1.261 schwarze 2416: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.277 schwarze 2417: return 0;
1.204 schwarze 2418:
1.261 schwarze 2419: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2420: while (isspace((unsigned char)v[*pos]))
2421: (*pos)++;
1.206 schwarze 2422:
2423: if (NULL == res)
2424: continue;
1.204 schwarze 2425:
2426: switch (operator) {
1.207 schwarze 2427: case '+':
1.204 schwarze 2428: *res += operand2;
2429: break;
1.207 schwarze 2430: case '-':
1.204 schwarze 2431: *res -= operand2;
2432: break;
1.207 schwarze 2433: case '*':
1.204 schwarze 2434: *res *= operand2;
2435: break;
1.207 schwarze 2436: case '/':
1.244 schwarze 2437: if (operand2 == 0) {
1.235 schwarze 2438: mandoc_msg(MANDOCERR_DIVZERO,
1.234 kristaps 2439: r->parse, ln, *pos, v);
2440: *res = 0;
2441: break;
2442: }
1.204 schwarze 2443: *res /= operand2;
2444: break;
1.207 schwarze 2445: case '%':
1.244 schwarze 2446: if (operand2 == 0) {
2447: mandoc_msg(MANDOCERR_DIVZERO,
2448: r->parse, ln, *pos, v);
2449: *res = 0;
2450: break;
2451: }
1.204 schwarze 2452: *res %= operand2;
2453: break;
1.207 schwarze 2454: case '<':
1.204 schwarze 2455: *res = *res < operand2;
2456: break;
1.207 schwarze 2457: case '>':
1.204 schwarze 2458: *res = *res > operand2;
2459: break;
1.207 schwarze 2460: case 'l':
1.204 schwarze 2461: *res = *res <= operand2;
2462: break;
1.207 schwarze 2463: case 'g':
1.204 schwarze 2464: *res = *res >= operand2;
2465: break;
1.207 schwarze 2466: case '=':
1.204 schwarze 2467: *res = *res == operand2;
2468: break;
1.207 schwarze 2469: case '!':
1.204 schwarze 2470: *res = *res != operand2;
2471: break;
1.207 schwarze 2472: case '&':
1.204 schwarze 2473: *res = *res && operand2;
2474: break;
1.207 schwarze 2475: case ':':
1.204 schwarze 2476: *res = *res || operand2;
2477: break;
1.207 schwarze 2478: case 'i':
1.204 schwarze 2479: if (operand2 < *res)
2480: *res = operand2;
2481: break;
1.207 schwarze 2482: case 'a':
1.204 schwarze 2483: if (operand2 > *res)
2484: *res = operand2;
2485: break;
2486: default:
2487: abort();
2488: }
2489: }
1.277 schwarze 2490: return 1;
1.204 schwarze 2491: }
2492:
1.266 schwarze 2493: /* --- register management ------------------------------------------------ */
2494:
1.180 schwarze 2495: void
1.187 schwarze 2496: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.147 kristaps 2497: {
1.180 schwarze 2498: struct roffreg *reg;
2499:
2500: /* Search for an existing register with the same name. */
2501: reg = r->regtab;
2502:
2503: while (reg && strcmp(name, reg->key.p))
2504: reg = reg->next;
1.147 kristaps 2505:
1.180 schwarze 2506: if (NULL == reg) {
2507: /* Create a new register. */
2508: reg = mandoc_malloc(sizeof(struct roffreg));
2509: reg->key.p = mandoc_strdup(name);
2510: reg->key.sz = strlen(name);
1.187 schwarze 2511: reg->val = 0;
1.180 schwarze 2512: reg->next = r->regtab;
2513: r->regtab = reg;
2514: }
2515:
1.187 schwarze 2516: if ('+' == sign)
2517: reg->val += val;
2518: else if ('-' == sign)
2519: reg->val -= val;
2520: else
2521: reg->val = val;
1.147 kristaps 2522: }
2523:
1.192 schwarze 2524: /*
2525: * Handle some predefined read-only number registers.
2526: * For now, return -1 if the requested register is not predefined;
2527: * in case a predefined read-only register having the value -1
2528: * were to turn up, another special value would have to be chosen.
2529: */
2530: static int
1.273 schwarze 2531: roff_getregro(const struct roff *r, const char *name)
1.192 schwarze 2532: {
2533:
2534: switch (*name) {
1.273 schwarze 2535: case '$': /* Number of arguments of the last macro evaluated. */
1.277 schwarze 2536: return r->argc;
1.207 schwarze 2537: case 'A': /* ASCII approximation mode is always off. */
1.277 schwarze 2538: return 0;
1.207 schwarze 2539: case 'g': /* Groff compatibility mode is always on. */
1.277 schwarze 2540: return 1;
1.207 schwarze 2541: case 'H': /* Fixed horizontal resolution. */
1.277 schwarze 2542: return 24;
1.207 schwarze 2543: case 'j': /* Always adjust left margin only. */
1.277 schwarze 2544: return 0;
1.207 schwarze 2545: case 'T': /* Some output device is always defined. */
1.277 schwarze 2546: return 1;
1.207 schwarze 2547: case 'V': /* Fixed vertical resolution. */
1.277 schwarze 2548: return 40;
1.192 schwarze 2549: default:
1.277 schwarze 2550: return -1;
1.192 schwarze 2551: }
2552: }
2553:
1.181 schwarze 2554: int
1.180 schwarze 2555: roff_getreg(const struct roff *r, const char *name)
1.147 kristaps 2556: {
1.180 schwarze 2557: struct roffreg *reg;
1.192 schwarze 2558: int val;
2559:
2560: if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) {
1.273 schwarze 2561: val = roff_getregro(r, name + 1);
1.192 schwarze 2562: if (-1 != val)
1.277 schwarze 2563: return val;
1.192 schwarze 2564: }
1.180 schwarze 2565:
2566: for (reg = r->regtab; reg; reg = reg->next)
2567: if (0 == strcmp(name, reg->key.p))
1.277 schwarze 2568: return reg->val;
1.181 schwarze 2569:
1.277 schwarze 2570: return 0;
1.181 schwarze 2571: }
2572:
2573: static int
2574: roff_getregn(const struct roff *r, const char *name, size_t len)
2575: {
2576: struct roffreg *reg;
1.192 schwarze 2577: int val;
2578:
2579: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2580: val = roff_getregro(r, name + 1);
1.192 schwarze 2581: if (-1 != val)
1.277 schwarze 2582: return val;
1.192 schwarze 2583: }
1.181 schwarze 2584:
2585: for (reg = r->regtab; reg; reg = reg->next)
2586: if (len == reg->key.sz &&
2587: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2588: return reg->val;
1.271 schwarze 2589:
1.277 schwarze 2590: return 0;
1.271 schwarze 2591: }
2592:
2593: static int
2594: roff_hasregn(const struct roff *r, const char *name, size_t len)
2595: {
2596: struct roffreg *reg;
2597: int val;
2598:
2599: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2600: val = roff_getregro(r, name + 1);
1.271 schwarze 2601: if (-1 != val)
1.277 schwarze 2602: return 1;
1.271 schwarze 2603: }
2604:
2605: for (reg = r->regtab; reg; reg = reg->next)
2606: if (len == reg->key.sz &&
2607: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2608: return 1;
1.147 kristaps 2609:
1.277 schwarze 2610: return 0;
1.147 kristaps 2611: }
2612:
1.180 schwarze 2613: static void
2614: roff_freereg(struct roffreg *reg)
1.147 kristaps 2615: {
1.180 schwarze 2616: struct roffreg *old_reg;
1.147 kristaps 2617:
1.180 schwarze 2618: while (NULL != reg) {
2619: free(reg->key.p);
2620: old_reg = reg;
2621: reg = reg->next;
2622: free(old_reg);
2623: }
1.147 kristaps 2624: }
1.92 schwarze 2625:
2626: static enum rofferr
1.89 kristaps 2627: roff_nr(ROFF_ARGS)
1.83 schwarze 2628: {
1.212 schwarze 2629: char *key, *val;
2630: size_t keysz;
1.138 kristaps 2631: int iv;
1.187 schwarze 2632: char sign;
1.89 kristaps 2633:
1.238 schwarze 2634: key = val = buf->buf + pos;
2635: if (*key == '\0')
1.277 schwarze 2636: return ROFF_IGN;
1.212 schwarze 2637:
2638: keysz = roff_getname(r, &val, ln, pos);
1.238 schwarze 2639: if (key[keysz] == '\\')
1.277 schwarze 2640: return ROFF_IGN;
1.212 schwarze 2641: key[keysz] = '\0';
1.89 kristaps 2642:
1.187 schwarze 2643: sign = *val;
1.238 schwarze 2644: if (sign == '+' || sign == '-')
1.187 schwarze 2645: val++;
2646:
1.261 schwarze 2647: if (roff_evalnum(r, ln, val, NULL, &iv, ROFFNUM_SCALE))
1.204 schwarze 2648: roff_setreg(r, key, iv, sign);
1.109 kristaps 2649:
1.277 schwarze 2650: return ROFF_IGN;
1.203 schwarze 2651: }
2652:
2653: static enum rofferr
2654: roff_rr(ROFF_ARGS)
2655: {
2656: struct roffreg *reg, **prev;
1.212 schwarze 2657: char *name, *cp;
2658: size_t namesz;
1.203 schwarze 2659:
1.238 schwarze 2660: name = cp = buf->buf + pos;
2661: if (*name == '\0')
1.277 schwarze 2662: return ROFF_IGN;
1.212 schwarze 2663: namesz = roff_getname(r, &cp, ln, pos);
2664: name[namesz] = '\0';
1.203 schwarze 2665:
2666: prev = &r->regtab;
2667: while (1) {
2668: reg = *prev;
1.238 schwarze 2669: if (reg == NULL || !strcmp(name, reg->key.p))
1.203 schwarze 2670: break;
2671: prev = ®->next;
2672: }
1.238 schwarze 2673: if (reg != NULL) {
1.203 schwarze 2674: *prev = reg->next;
2675: free(reg->key.p);
2676: free(reg);
2677: }
1.277 schwarze 2678: return ROFF_IGN;
1.122 schwarze 2679: }
2680:
1.266 schwarze 2681: /* --- handler functions for roff requests -------------------------------- */
2682:
1.122 schwarze 2683: static enum rofferr
2684: roff_rm(ROFF_ARGS)
2685: {
2686: const char *name;
2687: char *cp;
1.212 schwarze 2688: size_t namesz;
1.122 schwarze 2689:
1.238 schwarze 2690: cp = buf->buf + pos;
2691: while (*cp != '\0') {
1.212 schwarze 2692: name = cp;
1.238 schwarze 2693: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.212 schwarze 2694: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.238 schwarze 2695: if (name[namesz] == '\\')
1.212 schwarze 2696: break;
1.122 schwarze 2697: }
1.277 schwarze 2698: return ROFF_IGN;
1.178 schwarze 2699: }
2700:
2701: static enum rofferr
2702: roff_it(ROFF_ARGS)
2703: {
2704: int iv;
2705:
2706: /* Parse the number of lines. */
1.261 schwarze 2707:
2708: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.222 schwarze 2709: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.238 schwarze 2710: ln, ppos, buf->buf + 1);
1.277 schwarze 2711: return ROFF_IGN;
1.178 schwarze 2712: }
2713:
1.262 schwarze 2714: while (isspace((unsigned char)buf->buf[pos]))
2715: pos++;
2716:
2717: /*
2718: * Arm the input line trap.
2719: * Special-casing "an-trap" is an ugly workaround to cope
2720: * with DocBook stupidly fiddling with man(7) internals.
2721: */
1.261 schwarze 2722:
1.178 schwarze 2723: roffit_lines = iv;
1.262 schwarze 2724: roffit_macro = mandoc_strdup(iv != 1 ||
2725: strcmp(buf->buf + pos, "an-trap") ?
2726: buf->buf + pos : "br");
1.277 schwarze 2727: return ROFF_IGN;
1.175 schwarze 2728: }
2729:
2730: static enum rofferr
2731: roff_Dd(ROFF_ARGS)
2732: {
2733: const char *const *cp;
2734:
1.227 schwarze 2735: if ((r->options & (MPARSE_MDOC | MPARSE_QUICK)) == 0)
1.175 schwarze 2736: for (cp = __mdoc_reserved; *cp; cp++)
2737: roff_setstr(r, *cp, NULL, 0);
2738:
1.227 schwarze 2739: if (r->format == 0)
2740: r->format = MPARSE_MDOC;
2741:
1.277 schwarze 2742: return ROFF_CONT;
1.175 schwarze 2743: }
2744:
2745: static enum rofferr
2746: roff_TH(ROFF_ARGS)
2747: {
2748: const char *const *cp;
2749:
1.227 schwarze 2750: if ((r->options & MPARSE_QUICK) == 0)
1.175 schwarze 2751: for (cp = __man_reserved; *cp; cp++)
2752: roff_setstr(r, *cp, NULL, 0);
2753:
1.227 schwarze 2754: if (r->format == 0)
2755: r->format = MPARSE_MAN;
2756:
1.277 schwarze 2757: return ROFF_CONT;
1.109 kristaps 2758: }
2759:
2760: static enum rofferr
2761: roff_TE(ROFF_ARGS)
2762: {
2763:
2764: if (NULL == r->tbl)
1.221 schwarze 2765: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2766: ln, ppos, "TE");
1.258 schwarze 2767: else if ( ! tbl_end(&r->tbl)) {
2768: free(buf->buf);
2769: buf->buf = mandoc_strdup(".sp");
2770: buf->sz = 4;
1.277 schwarze 2771: return ROFF_REPARSE;
1.258 schwarze 2772: }
1.277 schwarze 2773: return ROFF_IGN;
1.112 kristaps 2774: }
2775:
2776: static enum rofferr
2777: roff_T_(ROFF_ARGS)
2778: {
2779:
2780: if (NULL == r->tbl)
1.221 schwarze 2781: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2782: ln, ppos, "T&");
1.112 kristaps 2783: else
1.116 kristaps 2784: tbl_restart(ppos, ln, r->tbl);
1.112 kristaps 2785:
1.277 schwarze 2786: return ROFF_IGN;
1.109 kristaps 2787: }
2788:
1.230 schwarze 2789: /*
2790: * Handle in-line equation delimiters.
2791: */
2792: static enum rofferr
1.238 schwarze 2793: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.151 kristaps 2794: {
1.233 schwarze 2795: char *cp1, *cp2;
2796: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.151 kristaps 2797:
1.230 schwarze 2798: /*
2799: * Outside equations, look for an opening delimiter.
2800: * If we are inside an equation, we already know it is
2801: * in-line, or this function wouldn't have been called;
2802: * so look for a closing delimiter.
2803: */
2804:
1.238 schwarze 2805: cp1 = buf->buf + pos;
1.230 schwarze 2806: cp2 = strchr(cp1, r->eqn == NULL ?
2807: r->last_eqn->odelim : r->last_eqn->cdelim);
2808: if (cp2 == NULL)
1.277 schwarze 2809: return ROFF_CONT;
1.230 schwarze 2810:
1.233 schwarze 2811: *cp2++ = '\0';
2812: bef_pr = bef_nl = aft_nl = aft_pr = "";
2813:
2814: /* Handle preceding text, protecting whitespace. */
2815:
1.238 schwarze 2816: if (*buf->buf != '\0') {
1.233 schwarze 2817: if (r->eqn == NULL)
2818: bef_pr = "\\&";
2819: bef_nl = "\n";
2820: }
2821:
2822: /*
2823: * Prepare replacing the delimiter with an equation macro
2824: * and drop leading white space from the equation.
2825: */
1.230 schwarze 2826:
1.233 schwarze 2827: if (r->eqn == NULL) {
2828: while (*cp2 == ' ')
2829: cp2++;
2830: mac = ".EQ";
2831: } else
2832: mac = ".EN";
2833:
2834: /* Handle following text, protecting whitespace. */
2835:
2836: if (*cp2 != '\0') {
2837: aft_nl = "\n";
2838: if (r->eqn != NULL)
2839: aft_pr = "\\&";
2840: }
2841:
2842: /* Do the actual replacement. */
2843:
1.238 schwarze 2844: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.233 schwarze 2845: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.238 schwarze 2846: free(buf->buf);
2847: buf->buf = cp1;
1.230 schwarze 2848:
2849: /* Toggle the in-line state of the eqn subsystem. */
2850:
2851: r->eqn_inline = r->eqn == NULL;
1.277 schwarze 2852: return ROFF_REPARSE;
1.151 kristaps 2853: }
2854:
1.235 schwarze 2855: static enum rofferr
2856: roff_EQ(ROFF_ARGS)
1.125 kristaps 2857: {
1.151 kristaps 2858: struct eqn_node *e;
1.125 kristaps 2859:
1.238 schwarze 2860: assert(r->eqn == NULL);
1.235 schwarze 2861: e = eqn_alloc(ppos, ln, r->parse);
1.125 kristaps 2862:
1.230 schwarze 2863: if (r->last_eqn) {
1.125 kristaps 2864: r->last_eqn->next = e;
1.230 schwarze 2865: e->delim = r->last_eqn->delim;
2866: e->odelim = r->last_eqn->odelim;
2867: e->cdelim = r->last_eqn->cdelim;
2868: } else
1.125 kristaps 2869: r->first_eqn = r->last_eqn = e;
2870:
2871: r->eqn = r->last_eqn = e;
1.151 kristaps 2872:
1.238 schwarze 2873: if (buf->buf[pos] != '\0')
1.235 schwarze 2874: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 2875: ".EQ %s", buf->buf + pos);
1.151 kristaps 2876:
1.277 schwarze 2877: return ROFF_IGN;
1.125 kristaps 2878: }
2879:
2880: static enum rofferr
2881: roff_EN(ROFF_ARGS)
2882: {
2883:
1.221 schwarze 2884: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
1.277 schwarze 2885: return ROFF_IGN;
1.125 kristaps 2886: }
2887:
2888: static enum rofferr
1.109 kristaps 2889: roff_TS(ROFF_ARGS)
2890: {
1.176 schwarze 2891: struct tbl_node *tbl;
1.89 kristaps 2892:
1.115 kristaps 2893: if (r->tbl) {
1.221 schwarze 2894: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
2895: ln, ppos, "TS breaks TS");
1.151 kristaps 2896: tbl_end(&r->tbl);
1.115 kristaps 2897: }
1.83 schwarze 2898:
1.176 schwarze 2899: tbl = tbl_alloc(ppos, ln, r->parse);
1.113 kristaps 2900:
2901: if (r->last_tbl)
1.176 schwarze 2902: r->last_tbl->next = tbl;
1.113 kristaps 2903: else
1.176 schwarze 2904: r->first_tbl = r->last_tbl = tbl;
1.113 kristaps 2905:
1.176 schwarze 2906: r->tbl = r->last_tbl = tbl;
1.277 schwarze 2907: return ROFF_IGN;
1.251 schwarze 2908: }
2909:
2910: static enum rofferr
2911: roff_brp(ROFF_ARGS)
2912: {
2913:
2914: buf->buf[pos - 1] = '\0';
1.277 schwarze 2915: return ROFF_CONT;
1.92 schwarze 2916: }
2917:
1.105 kristaps 2918: static enum rofferr
1.174 kristaps 2919: roff_cc(ROFF_ARGS)
2920: {
2921: const char *p;
2922:
1.238 schwarze 2923: p = buf->buf + pos;
1.174 kristaps 2924:
1.238 schwarze 2925: if (*p == '\0' || (r->control = *p++) == '.')
1.174 kristaps 2926: r->control = 0;
2927:
1.238 schwarze 2928: if (*p != '\0')
1.260 schwarze 2929: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
2930: ln, p - buf->buf, "cc ... %s", p);
1.174 kristaps 2931:
1.277 schwarze 2932: return ROFF_IGN;
1.174 kristaps 2933: }
2934:
2935: static enum rofferr
1.164 kristaps 2936: roff_tr(ROFF_ARGS)
2937: {
2938: const char *p, *first, *second;
2939: size_t fsz, ssz;
2940: enum mandoc_esc esc;
2941:
1.238 schwarze 2942: p = buf->buf + pos;
1.164 kristaps 2943:
1.238 schwarze 2944: if (*p == '\0') {
1.260 schwarze 2945: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.277 schwarze 2946: return ROFF_IGN;
1.164 kristaps 2947: }
2948:
1.238 schwarze 2949: while (*p != '\0') {
1.164 kristaps 2950: fsz = ssz = 1;
2951:
2952: first = p++;
1.238 schwarze 2953: if (*first == '\\') {
1.164 kristaps 2954: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 2955: if (esc == ESCAPE_ERROR) {
1.219 schwarze 2956: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 2957: ln, (int)(p - buf->buf), first);
1.277 schwarze 2958: return ROFF_IGN;
1.164 kristaps 2959: }
2960: fsz = (size_t)(p - first);
2961: }
2962:
2963: second = p++;
1.238 schwarze 2964: if (*second == '\\') {
1.164 kristaps 2965: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 2966: if (esc == ESCAPE_ERROR) {
1.219 schwarze 2967: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 2968: ln, (int)(p - buf->buf), second);
1.277 schwarze 2969: return ROFF_IGN;
1.164 kristaps 2970: }
2971: ssz = (size_t)(p - second);
1.238 schwarze 2972: } else if (*second == '\0') {
1.260 schwarze 2973: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
2974: ln, first - buf->buf, "tr %s", first);
1.164 kristaps 2975: second = " ";
1.165 kristaps 2976: p--;
1.164 kristaps 2977: }
2978:
1.167 kristaps 2979: if (fsz > 1) {
1.207 schwarze 2980: roff_setstrn(&r->xmbtab, first, fsz,
2981: second, ssz, 0);
1.167 kristaps 2982: continue;
2983: }
2984:
1.238 schwarze 2985: if (r->xtab == NULL)
1.207 schwarze 2986: r->xtab = mandoc_calloc(128,
2987: sizeof(struct roffstr));
1.167 kristaps 2988:
2989: free(r->xtab[(int)*first].p);
2990: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
2991: r->xtab[(int)*first].sz = ssz;
1.164 kristaps 2992: }
2993:
1.277 schwarze 2994: return ROFF_IGN;
1.164 kristaps 2995: }
2996:
2997: static enum rofferr
1.105 kristaps 2998: roff_so(ROFF_ARGS)
2999: {
1.249 schwarze 3000: char *name, *cp;
1.105 kristaps 3001:
1.238 schwarze 3002: name = buf->buf + pos;
1.224 schwarze 3003: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.105 kristaps 3004:
3005: /*
3006: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3007: * opening anything that's not in our cwd or anything beneath
3008: * it. Thus, explicitly disallow traversing up the file-system
3009: * or using absolute paths.
3010: */
3011:
1.238 schwarze 3012: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.210 schwarze 3013: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
3014: ".so %s", name);
1.249 schwarze 3015: buf->sz = mandoc_asprintf(&cp,
3016: ".sp\nSee the file %s.\n.sp", name) + 1;
3017: free(buf->buf);
3018: buf->buf = cp;
3019: *offs = 0;
1.277 schwarze 3020: return ROFF_REPARSE;
1.105 kristaps 3021: }
3022:
3023: *offs = pos;
1.277 schwarze 3024: return ROFF_SO;
1.105 kristaps 3025: }
1.92 schwarze 3026:
1.266 schwarze 3027: /* --- user defined strings and macros ------------------------------------ */
3028:
1.106 kristaps 3029: static enum rofferr
3030: roff_userdef(ROFF_ARGS)
1.99 kristaps 3031: {
1.263 schwarze 3032: const char *arg[9], *ap;
1.106 kristaps 3033: char *cp, *n1, *n2;
1.274 schwarze 3034: int i, ib, ie;
1.263 schwarze 3035: size_t asz, rsz;
1.106 kristaps 3036:
3037: /*
3038: * Collect pointers to macro argument strings
1.188 schwarze 3039: * and NUL-terminate them.
1.106 kristaps 3040: */
1.263 schwarze 3041:
1.273 schwarze 3042: r->argc = 0;
1.238 schwarze 3043: cp = buf->buf + pos;
1.273 schwarze 3044: for (i = 0; i < 9; i++) {
3045: if (*cp == '\0')
3046: arg[i] = "";
3047: else {
3048: arg[i] = mandoc_getarg(r->parse, &cp, ln, &pos);
3049: r->argc = i + 1;
3050: }
3051: }
1.99 kristaps 3052:
1.106 kristaps 3053: /*
3054: * Expand macro arguments.
1.99 kristaps 3055: */
1.263 schwarze 3056:
3057: buf->sz = strlen(r->current_string) + 1;
3058: n1 = cp = mandoc_malloc(buf->sz);
3059: memcpy(n1, r->current_string, buf->sz);
3060: while (*cp != '\0') {
3061:
3062: /* Scan ahead for the next argument invocation. */
3063:
3064: if (*cp++ != '\\')
3065: continue;
3066: if (*cp++ != '$')
3067: continue;
1.274 schwarze 3068: if (*cp == '*') { /* \\$* inserts all arguments */
3069: ib = 0;
3070: ie = r->argc - 1;
3071: } else { /* \\$1 .. \\$9 insert one argument */
3072: ib = ie = *cp - '1';
3073: if (ib < 0 || ib > 8)
3074: continue;
3075: }
1.263 schwarze 3076: cp -= 2;
3077:
3078: /*
3079: * Determine the size of the expanded argument,
3080: * taking escaping of quotes into account.
3081: */
3082:
1.274 schwarze 3083: asz = ie > ib ? ie - ib : 0; /* for blanks */
3084: for (i = ib; i <= ie; i++) {
3085: for (ap = arg[i]; *ap != '\0'; ap++) {
3086: asz++;
3087: if (*ap == '"')
3088: asz += 3;
3089: }
1.263 schwarze 3090: }
3091: if (asz != 3) {
3092:
3093: /*
3094: * Determine the size of the rest of the
3095: * unexpanded macro, including the NUL.
3096: */
3097:
3098: rsz = buf->sz - (cp - n1) - 3;
3099:
3100: /*
3101: * When shrinking, move before
3102: * releasing the storage.
3103: */
3104:
3105: if (asz < 3)
3106: memmove(cp + asz, cp + 3, rsz);
3107:
3108: /*
3109: * Resize the storage for the macro
3110: * and readjust the parse pointer.
3111: */
3112:
3113: buf->sz += asz - 3;
3114: n2 = mandoc_realloc(n1, buf->sz);
3115: cp = n2 + (cp - n1);
3116: n1 = n2;
3117:
3118: /*
3119: * When growing, make room
3120: * for the expanded argument.
3121: */
3122:
3123: if (asz > 3)
3124: memmove(cp + asz, cp + 3, rsz);
3125: }
3126:
3127: /* Copy the expanded argument, escaping quotes. */
3128:
3129: n2 = cp;
1.274 schwarze 3130: for (i = ib; i <= ie; i++) {
3131: for (ap = arg[i]; *ap != '\0'; ap++) {
3132: if (*ap == '"') {
3133: memcpy(n2, "\\(dq", 4);
3134: n2 += 4;
3135: } else
3136: *n2++ = *ap;
3137: }
3138: if (i < ie)
3139: *n2++ = ' ';
1.106 kristaps 3140: }
1.99 kristaps 3141: }
3142:
1.106 kristaps 3143: /*
3144: * Replace the macro invocation
3145: * by the expanded macro.
3146: */
1.263 schwarze 3147:
1.238 schwarze 3148: free(buf->buf);
3149: buf->buf = n1;
1.248 schwarze 3150: *offs = 0;
1.106 kristaps 3151:
1.277 schwarze 3152: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
3153: ROFF_REPARSE : ROFF_APPEND;
1.99 kristaps 3154: }
1.121 schwarze 3155:
1.212 schwarze 3156: static size_t
1.121 schwarze 3157: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3158: {
3159: char *name, *cp;
1.212 schwarze 3160: size_t namesz;
1.121 schwarze 3161:
3162: name = *cpp;
3163: if ('\0' == *name)
1.277 schwarze 3164: return 0;
1.121 schwarze 3165:
1.212 schwarze 3166: /* Read until end of name and terminate it with NUL. */
3167: for (cp = name; 1; cp++) {
3168: if ('\0' == *cp || ' ' == *cp) {
3169: namesz = cp - name;
3170: break;
3171: }
1.121 schwarze 3172: if ('\\' != *cp)
3173: continue;
1.215 schwarze 3174: namesz = cp - name;
3175: if ('{' == cp[1] || '}' == cp[1])
3176: break;
1.121 schwarze 3177: cp++;
3178: if ('\\' == *cp)
3179: continue;
1.224 schwarze 3180: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3181: "%.*s", (int)(cp - name + 1), name);
1.212 schwarze 3182: mandoc_escape((const char **)&cp, NULL, NULL);
3183: break;
1.121 schwarze 3184: }
3185:
3186: /* Read past spaces. */
3187: while (' ' == *cp)
3188: cp++;
3189:
3190: *cpp = cp;
1.277 schwarze 3191: return namesz;
1.121 schwarze 3192: }
3193:
1.106 kristaps 3194: /*
3195: * Store *string into the user-defined string called *name.
3196: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.193 schwarze 3197: * append == 0: replace mode
3198: * append == 1: single-line append mode
3199: * append == 2: multiline append mode, append '\n' after each call
1.106 kristaps 3200: */
1.94 kristaps 3201: static void
1.106 kristaps 3202: roff_setstr(struct roff *r, const char *name, const char *string,
1.193 schwarze 3203: int append)
1.92 schwarze 3204: {
1.164 kristaps 3205:
3206: roff_setstrn(&r->strtab, name, strlen(name), string,
1.207 schwarze 3207: string ? strlen(string) : 0, append);
1.164 kristaps 3208: }
3209:
3210: static void
1.166 kristaps 3211: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.193 schwarze 3212: const char *string, size_t stringsz, int append)
1.164 kristaps 3213: {
1.166 kristaps 3214: struct roffkv *n;
1.164 kristaps 3215: char *c;
3216: int i;
3217: size_t oldch, newch;
1.92 schwarze 3218:
1.106 kristaps 3219: /* Search for an existing string with the same name. */
1.164 kristaps 3220: n = *r;
3221:
1.211 schwarze 3222: while (n && (namesz != n->key.sz ||
3223: strncmp(n->key.p, name, namesz)))
1.92 schwarze 3224: n = n->next;
1.94 kristaps 3225:
3226: if (NULL == n) {
1.106 kristaps 3227: /* Create a new string table entry. */
1.166 kristaps 3228: n = mandoc_malloc(sizeof(struct roffkv));
3229: n->key.p = mandoc_strndup(name, namesz);
3230: n->key.sz = namesz;
3231: n->val.p = NULL;
3232: n->val.sz = 0;
1.164 kristaps 3233: n->next = *r;
3234: *r = n;
1.193 schwarze 3235: } else if (0 == append) {
1.166 kristaps 3236: free(n->val.p);
3237: n->val.p = NULL;
3238: n->val.sz = 0;
1.106 kristaps 3239: }
3240:
3241: if (NULL == string)
3242: return;
3243:
3244: /*
3245: * One additional byte for the '\n' in multiline mode,
3246: * and one for the terminating '\0'.
3247: */
1.193 schwarze 3248: newch = stringsz + (1 < append ? 2u : 1u);
1.164 kristaps 3249:
1.166 kristaps 3250: if (NULL == n->val.p) {
3251: n->val.p = mandoc_malloc(newch);
3252: *n->val.p = '\0';
1.106 kristaps 3253: oldch = 0;
3254: } else {
1.166 kristaps 3255: oldch = n->val.sz;
3256: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.106 kristaps 3257: }
3258:
3259: /* Skip existing content in the destination buffer. */
1.166 kristaps 3260: c = n->val.p + (int)oldch;
1.106 kristaps 3261:
3262: /* Append new content to the destination buffer. */
1.164 kristaps 3263: i = 0;
3264: while (i < (int)stringsz) {
1.106 kristaps 3265: /*
3266: * Rudimentary roff copy mode:
3267: * Handle escaped backslashes.
3268: */
1.164 kristaps 3269: if ('\\' == string[i] && '\\' == string[i + 1])
3270: i++;
3271: *c++ = string[i++];
1.106 kristaps 3272: }
1.94 kristaps 3273:
1.106 kristaps 3274: /* Append terminating bytes. */
1.193 schwarze 3275: if (1 < append)
1.106 kristaps 3276: *c++ = '\n';
1.163 kristaps 3277:
1.106 kristaps 3278: *c = '\0';
1.166 kristaps 3279: n->val.sz = (int)(c - n->val.p);
1.92 schwarze 3280: }
3281:
1.94 kristaps 3282: static const char *
3283: roff_getstrn(const struct roff *r, const char *name, size_t len)
1.92 schwarze 3284: {
1.166 kristaps 3285: const struct roffkv *n;
1.191 schwarze 3286: int i;
1.92 schwarze 3287:
1.164 kristaps 3288: for (n = r->strtab; n; n = n->next)
1.207 schwarze 3289: if (0 == strncmp(name, n->key.p, len) &&
3290: '\0' == n->key.p[(int)len])
1.277 schwarze 3291: return n->val.p;
1.191 schwarze 3292:
3293: for (i = 0; i < PREDEFS_MAX; i++)
3294: if (0 == strncmp(name, predefs[i].name, len) &&
3295: '\0' == predefs[i].name[(int)len])
1.277 schwarze 3296: return predefs[i].str;
1.94 kristaps 3297:
1.277 schwarze 3298: return NULL;
1.92 schwarze 3299: }
3300:
1.94 kristaps 3301: static void
1.167 kristaps 3302: roff_freestr(struct roffkv *r)
1.92 schwarze 3303: {
1.166 kristaps 3304: struct roffkv *n, *nn;
1.92 schwarze 3305:
1.167 kristaps 3306: for (n = r; n; n = nn) {
1.166 kristaps 3307: free(n->key.p);
3308: free(n->val.p);
1.92 schwarze 3309: nn = n->next;
3310: free(n);
3311: }
1.114 kristaps 3312: }
1.266 schwarze 3313:
3314: /* --- accessors and utility functions ------------------------------------ */
1.114 kristaps 3315:
3316: const struct tbl_span *
3317: roff_span(const struct roff *r)
3318: {
1.207 schwarze 3319:
1.277 schwarze 3320: return r->tbl ? tbl_span(r->tbl) : NULL;
1.125 kristaps 3321: }
3322:
3323: const struct eqn *
3324: roff_eqn(const struct roff *r)
3325: {
1.207 schwarze 3326:
1.277 schwarze 3327: return r->last_eqn ? &r->last_eqn->eqn : NULL;
1.164 kristaps 3328: }
3329:
3330: /*
3331: * Duplicate an input string, making the appropriate character
3332: * conversations (as stipulated by `tr') along the way.
3333: * Returns a heap-allocated string with all the replacements made.
3334: */
3335: char *
3336: roff_strdup(const struct roff *r, const char *p)
3337: {
1.166 kristaps 3338: const struct roffkv *cp;
1.164 kristaps 3339: char *res;
3340: const char *pp;
3341: size_t ssz, sz;
3342: enum mandoc_esc esc;
3343:
1.167 kristaps 3344: if (NULL == r->xmbtab && NULL == r->xtab)
1.277 schwarze 3345: return mandoc_strdup(p);
1.164 kristaps 3346: else if ('\0' == *p)
1.277 schwarze 3347: return mandoc_strdup("");
1.164 kristaps 3348:
3349: /*
3350: * Step through each character looking for term matches
3351: * (remember that a `tr' can be invoked with an escape, which is
3352: * a glyph but the escape is multi-character).
3353: * We only do this if the character hash has been initialised
3354: * and the string is >0 length.
3355: */
3356:
3357: res = NULL;
3358: ssz = 0;
3359:
3360: while ('\0' != *p) {
1.167 kristaps 3361: if ('\\' != *p && r->xtab && r->xtab[(int)*p].p) {
3362: sz = r->xtab[(int)*p].sz;
3363: res = mandoc_realloc(res, ssz + sz + 1);
3364: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3365: ssz += sz;
3366: p++;
3367: continue;
3368: } else if ('\\' != *p) {
3369: res = mandoc_realloc(res, ssz + 2);
3370: res[ssz++] = *p++;
3371: continue;
3372: }
3373:
1.164 kristaps 3374: /* Search for term matches. */
1.167 kristaps 3375: for (cp = r->xmbtab; cp; cp = cp->next)
1.166 kristaps 3376: if (0 == strncmp(p, cp->key.p, cp->key.sz))
1.164 kristaps 3377: break;
3378:
3379: if (NULL != cp) {
3380: /*
3381: * A match has been found.
3382: * Append the match to the array and move
3383: * forward by its keysize.
3384: */
1.207 schwarze 3385: res = mandoc_realloc(res,
3386: ssz + cp->val.sz + 1);
1.166 kristaps 3387: memcpy(res + ssz, cp->val.p, cp->val.sz);
3388: ssz += cp->val.sz;
3389: p += (int)cp->key.sz;
1.164 kristaps 3390: continue;
3391: }
3392:
1.167 kristaps 3393: /*
3394: * Handle escapes carefully: we need to copy
3395: * over just the escape itself, or else we might
3396: * do replacements within the escape itself.
3397: * Make sure to pass along the bogus string.
3398: */
3399: pp = p++;
3400: esc = mandoc_escape(&p, NULL, NULL);
3401: if (ESCAPE_ERROR == esc) {
3402: sz = strlen(pp);
1.164 kristaps 3403: res = mandoc_realloc(res, ssz + sz + 1);
3404: memcpy(res + ssz, pp, sz);
1.167 kristaps 3405: break;
1.164 kristaps 3406: }
1.207 schwarze 3407: /*
3408: * We bail out on bad escapes.
1.167 kristaps 3409: * No need to warn: we already did so when
3410: * roff_res() was called.
3411: */
3412: sz = (int)(p - pp);
3413: res = mandoc_realloc(res, ssz + sz + 1);
3414: memcpy(res + ssz, pp, sz);
3415: ssz += sz;
1.164 kristaps 3416: }
3417:
3418: res[(int)ssz] = '\0';
1.277 schwarze 3419: return res;
1.227 schwarze 3420: }
3421:
3422: int
3423: roff_getformat(const struct roff *r)
3424: {
3425:
1.277 schwarze 3426: return r->format;
1.174 kristaps 3427: }
3428:
3429: /*
1.207 schwarze 3430: * Find out whether a line is a macro line or not.
1.174 kristaps 3431: * If it is, adjust the current position and return one; if it isn't,
3432: * return zero and don't change the current position.
3433: * If the control character has been set with `.cc', then let that grain
3434: * precedence.
3435: * This is slighly contrary to groff, where using the non-breaking
3436: * control character when `cc' has been invoked will cause the
3437: * non-breaking macro contents to be printed verbatim.
3438: */
3439: int
3440: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
3441: {
3442: int pos;
3443:
3444: pos = *ppos;
3445:
3446: if (0 != r->control && cp[pos] == r->control)
3447: pos++;
3448: else if (0 != r->control)
1.277 schwarze 3449: return 0;
1.174 kristaps 3450: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
3451: pos += 2;
3452: else if ('.' == cp[pos] || '\'' == cp[pos])
3453: pos++;
3454: else
1.277 schwarze 3455: return 0;
1.174 kristaps 3456:
3457: while (' ' == cp[pos] || '\t' == cp[pos])
3458: pos++;
3459:
3460: *ppos = pos;
1.277 schwarze 3461: return 1;
1.74 kristaps 3462: }
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