Annotation of mandoc/roff.c, Revision 1.290
1.290 ! schwarze 1: /* $Id: roff.c,v 1.289 2017/02/17 03:03:03 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++) {
1.289 schwarze 1229: if (cp[0] == '\\' && cp[1] != '\0' &&
1230: strchr(" %&0^|~", cp[1]) != NULL)
1.269 schwarze 1231: cp++;
1.288 schwarze 1232: else if ( ! isspace((unsigned char)*cp))
1.269 schwarze 1233: break;
1234: }
1235:
1.289 schwarze 1236: /* Skip trailing backslash. */
1237:
1238: sz = strlen(cp);
1.290 ! schwarze 1239: if (sz > 0 && cp[sz - 1] == '\\')
1.289 schwarze 1240: sz--;
1241:
1.269 schwarze 1242: /* Skip trailing whitespace. */
1243:
1.289 schwarze 1244: for (; sz; sz--)
1.269 schwarze 1245: if ( ! isspace((unsigned char)cp[sz-1]))
1246: break;
1247:
1248: /* Skip empty strings. */
1249:
1250: if (sz == 0)
1251: return;
1252:
1253: if (*dest == NULL) {
1254: *dest = mandoc_strndup(cp, sz);
1255: return;
1256: }
1257:
1258: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1259: free(*dest);
1260: *dest = cp;
1.266 schwarze 1261: }
1262:
1263: /* --- main functions of the roff parser ---------------------------------- */
1264:
1.94 kristaps 1265: /*
1.206 schwarze 1266: * In the current line, expand escape sequences that tend to get
1267: * used in numerical expressions and conditional requests.
1268: * Also check the syntax of the remaining escape sequences.
1.154 kristaps 1269: */
1.172 schwarze 1270: static enum rofferr
1.238 schwarze 1271: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.94 kristaps 1272: {
1.208 schwarze 1273: char ubuf[24]; /* buffer to print the number */
1.205 schwarze 1274: const char *start; /* start of the string to process */
1.209 schwarze 1275: char *stesc; /* start of an escape sequence ('\\') */
1.108 schwarze 1276: const char *stnam; /* start of the name, after "[(*" */
1277: const char *cp; /* end of the name, e.g. before ']' */
1278: const char *res; /* the string to be substituted */
1.238 schwarze 1279: char *nbuf; /* new buffer to copy buf->buf to */
1.181 schwarze 1280: size_t maxl; /* expected length of the escape name */
1281: size_t naml; /* actual length of the escape name */
1.237 schwarze 1282: enum mandoc_esc esc; /* type of the escape sequence */
1283: int inaml; /* length returned from mandoc_escape() */
1.181 schwarze 1284: int expand_count; /* to avoid infinite loops */
1.206 schwarze 1285: int npos; /* position in numeric expression */
1.218 schwarze 1286: int arg_complete; /* argument not interrupted by eol */
1.206 schwarze 1287: char term; /* character terminating the escape */
1.94 kristaps 1288:
1.170 schwarze 1289: expand_count = 0;
1.238 schwarze 1290: start = buf->buf + pos;
1.205 schwarze 1291: stesc = strchr(start, '\0') - 1;
1292: while (stesc-- > start) {
1.170 schwarze 1293:
1.205 schwarze 1294: /* Search backwards for the next backslash. */
1295:
1.238 schwarze 1296: if (*stesc != '\\')
1.205 schwarze 1297: continue;
1298:
1299: /* If it is escaped, skip it. */
1300:
1301: for (cp = stesc - 1; cp >= start; cp--)
1.238 schwarze 1302: if (*cp != '\\')
1.205 schwarze 1303: break;
1304:
1.238 schwarze 1305: if ((stesc - cp) % 2 == 0) {
1.209 schwarze 1306: stesc = (char *)cp;
1.205 schwarze 1307: continue;
1308: }
1.108 schwarze 1309:
1.206 schwarze 1310: /* Decide whether to expand or to check only. */
1.108 schwarze 1311:
1.206 schwarze 1312: term = '\0';
1.205 schwarze 1313: cp = stesc + 1;
1.181 schwarze 1314: switch (*cp) {
1.207 schwarze 1315: case '*':
1.181 schwarze 1316: res = NULL;
1317: break;
1.207 schwarze 1318: case 'B':
1319: case 'w':
1.206 schwarze 1320: term = cp[1];
1321: /* FALLTHROUGH */
1.207 schwarze 1322: case 'n':
1.181 schwarze 1323: res = ubuf;
1324: break;
1325: default:
1.237 schwarze 1326: esc = mandoc_escape(&cp, &stnam, &inaml);
1327: if (esc == ESCAPE_ERROR ||
1328: (esc == ESCAPE_SPECIAL &&
1.279 schwarze 1329: mchars_spec2cp(stnam, inaml) < 0))
1.219 schwarze 1330: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.238 schwarze 1331: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1332: "%.*s", (int)(cp - stesc), stesc);
1.205 schwarze 1333: continue;
1.152 kristaps 1334: }
1335:
1.205 schwarze 1336: if (EXPAND_LIMIT < ++expand_count) {
1337: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.238 schwarze 1338: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1339: return ROFF_IGN;
1.205 schwarze 1340: }
1.108 schwarze 1341:
1342: /*
1343: * The third character decides the length
1.181 schwarze 1344: * of the name of the string or register.
1.108 schwarze 1345: * Save a pointer to the name.
1346: */
1347:
1.238 schwarze 1348: if (term == '\0') {
1.206 schwarze 1349: switch (*++cp) {
1.207 schwarze 1350: case '\0':
1.206 schwarze 1351: maxl = 0;
1352: break;
1.207 schwarze 1353: case '(':
1.206 schwarze 1354: cp++;
1355: maxl = 2;
1356: break;
1.207 schwarze 1357: case '[':
1.206 schwarze 1358: cp++;
1359: term = ']';
1360: maxl = 0;
1361: break;
1362: default:
1363: maxl = 1;
1364: break;
1365: }
1366: } else {
1367: cp += 2;
1.94 kristaps 1368: maxl = 0;
1369: }
1.108 schwarze 1370: stnam = cp;
1.94 kristaps 1371:
1.108 schwarze 1372: /* Advance to the end of the name. */
1.94 kristaps 1373:
1.253 schwarze 1374: naml = 0;
1.218 schwarze 1375: arg_complete = 1;
1.253 schwarze 1376: while (maxl == 0 || naml < maxl) {
1.238 schwarze 1377: if (*cp == '\0') {
1.219 schwarze 1378: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 1379: ln, (int)(stesc - buf->buf), stesc);
1.218 schwarze 1380: arg_complete = 0;
1.206 schwarze 1381: break;
1.153 kristaps 1382: }
1.238 schwarze 1383: if (maxl == 0 && *cp == term) {
1.206 schwarze 1384: cp++;
1.253 schwarze 1385: break;
1386: }
1387: if (*cp++ != '\\' || stesc[1] != 'w') {
1388: naml++;
1389: continue;
1390: }
1391: switch (mandoc_escape(&cp, NULL, NULL)) {
1392: case ESCAPE_SPECIAL:
1393: case ESCAPE_UNICODE:
1394: case ESCAPE_NUMBERED:
1395: case ESCAPE_OVERSTRIKE:
1396: naml++;
1397: break;
1398: default:
1.94 kristaps 1399: break;
1.206 schwarze 1400: }
1.94 kristaps 1401: }
1402:
1.108 schwarze 1403: /*
1404: * Retrieve the replacement string; if it is
1405: * undefined, resume searching for escapes.
1406: */
1407:
1.206 schwarze 1408: switch (stesc[1]) {
1.207 schwarze 1409: case '*':
1.218 schwarze 1410: if (arg_complete)
1411: res = roff_getstrn(r, stnam, naml);
1.206 schwarze 1412: break;
1.207 schwarze 1413: case 'B':
1.206 schwarze 1414: npos = 0;
1.218 schwarze 1415: ubuf[0] = arg_complete &&
1.261 schwarze 1416: roff_evalnum(r, ln, stnam, &npos,
1417: NULL, ROFFNUM_SCALE) &&
1.218 schwarze 1418: stnam + npos + 1 == cp ? '1' : '0';
1.206 schwarze 1419: ubuf[1] = '\0';
1420: break;
1.207 schwarze 1421: case 'n':
1.218 schwarze 1422: if (arg_complete)
1423: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1424: roff_getregn(r, stnam, naml));
1425: else
1426: ubuf[0] = '\0';
1.206 schwarze 1427: break;
1.207 schwarze 1428: case 'w':
1.218 schwarze 1429: /* use even incomplete args */
1.208 schwarze 1430: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.206 schwarze 1431: 24 * (int)naml);
1432: break;
1433: }
1.94 kristaps 1434:
1.238 schwarze 1435: if (res == NULL) {
1.219 schwarze 1436: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1437: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1438: "%.*s", (int)naml, stnam);
1.142 kristaps 1439: res = "";
1.246 schwarze 1440: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1441: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1442: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1443: return ROFF_IGN;
1.94 kristaps 1444: }
1445:
1.108 schwarze 1446: /* Replace the escape sequence by the string. */
1447:
1.209 schwarze 1448: *stesc = '\0';
1.238 schwarze 1449: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1450: buf->buf, res, cp) + 1;
1.94 kristaps 1451:
1.205 schwarze 1452: /* Prepare for the next replacement. */
1.94 kristaps 1453:
1.205 schwarze 1454: start = nbuf + pos;
1.238 schwarze 1455: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1456: free(buf->buf);
1457: buf->buf = nbuf;
1.154 kristaps 1458: }
1.277 schwarze 1459: return ROFF_CONT;
1.154 kristaps 1460: }
1461:
1462: /*
1.275 schwarze 1463: * Process text streams.
1.154 kristaps 1464: */
1465: static enum rofferr
1.238 schwarze 1466: roff_parsetext(struct buf *buf, int pos, int *offs)
1.154 kristaps 1467: {
1468: size_t sz;
1469: const char *start;
1.178 schwarze 1470: char *p;
1471: int isz;
1.154 kristaps 1472: enum mandoc_esc esc;
1473:
1.275 schwarze 1474: /* Spring the input line trap. */
1475:
1476: if (roffit_lines == 1) {
1477: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1478: free(buf->buf);
1479: buf->buf = p;
1480: buf->sz = isz + 1;
1481: *offs = 0;
1482: free(roffit_macro);
1483: roffit_lines = 0;
1.277 schwarze 1484: return ROFF_REPARSE;
1.275 schwarze 1485: } else if (roffit_lines > 1)
1486: --roffit_lines;
1487:
1488: /* Convert all breakable hyphens into ASCII_HYPH. */
1489:
1.238 schwarze 1490: start = p = buf->buf + pos;
1.154 kristaps 1491:
1.238 schwarze 1492: while (*p != '\0') {
1.154 kristaps 1493: sz = strcspn(p, "-\\");
1494: p += sz;
1495:
1.238 schwarze 1496: if (*p == '\0')
1.159 kristaps 1497: break;
1498:
1.238 schwarze 1499: if (*p == '\\') {
1.154 kristaps 1500: /* Skip over escapes. */
1501: p++;
1.189 schwarze 1502: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.238 schwarze 1503: if (esc == ESCAPE_ERROR)
1.154 kristaps 1504: break;
1.264 schwarze 1505: while (*p == '-')
1506: p++;
1.155 kristaps 1507: continue;
1.159 kristaps 1508: } else if (p == start) {
1.158 kristaps 1509: p++;
1.155 kristaps 1510: continue;
1.158 kristaps 1511: }
1.155 kristaps 1512:
1.171 schwarze 1513: if (isalpha((unsigned char)p[-1]) &&
1514: isalpha((unsigned char)p[1]))
1.155 kristaps 1515: *p = ASCII_HYPH;
1516: p++;
1.94 kristaps 1517: }
1.277 schwarze 1518: return ROFF_CONT;
1.94 kristaps 1519: }
1520:
1.67 kristaps 1521: enum rofferr
1.238 schwarze 1522: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.67 kristaps 1523: {
1524: enum rofft t;
1.109 kristaps 1525: enum rofferr e;
1.238 schwarze 1526: int pos; /* parse point */
1.243 schwarze 1527: int spos; /* saved parse point for messages */
1.238 schwarze 1528: int ppos; /* original offset in buf->buf */
1529: int ctl; /* macro line (boolean) */
1530:
1531: ppos = pos = *offs;
1.79 kristaps 1532:
1.230 schwarze 1533: /* Handle in-line equation delimiters. */
1534:
1.236 schwarze 1535: if (r->tbl == NULL &&
1536: r->last_eqn != NULL && r->last_eqn->delim &&
1.230 schwarze 1537: (r->eqn == NULL || r->eqn_inline)) {
1.238 schwarze 1538: e = roff_eqndelim(r, buf, pos);
1.230 schwarze 1539: if (e == ROFF_REPARSE)
1.277 schwarze 1540: return e;
1.230 schwarze 1541: assert(e == ROFF_CONT);
1542: }
1543:
1544: /* Expand some escape sequences. */
1.94 kristaps 1545:
1.238 schwarze 1546: e = roff_res(r, buf, ln, pos);
1547: if (e == ROFF_IGN)
1.277 schwarze 1548: return e;
1.238 schwarze 1549: assert(e == ROFF_CONT);
1.94 kristaps 1550:
1.238 schwarze 1551: ctl = roff_getcontrol(r, buf->buf, &pos);
1.130 kristaps 1552:
1.94 kristaps 1553: /*
1.79 kristaps 1554: * First, if a scope is open and we're not a macro, pass the
1.252 schwarze 1555: * text through the macro's filter.
1556: * Equations process all content themselves.
1557: * Tables process almost all content themselves, but we want
1558: * to warn about macros before passing it there.
1.79 kristaps 1559: */
1.74 kristaps 1560:
1.252 schwarze 1561: if (r->last != NULL && ! ctl) {
1.78 kristaps 1562: t = r->last->tok;
1563: assert(roffs[t].text);
1.238 schwarze 1564: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1565: assert(e == ROFF_IGN || e == ROFF_CONT);
1566: if (e != ROFF_CONT)
1.277 schwarze 1567: return e;
1.182 schwarze 1568: }
1.252 schwarze 1569: if (r->eqn != NULL)
1.277 schwarze 1570: return eqn_read(&r->eqn, ln, buf->buf, ppos, offs);
1.252 schwarze 1571: if (r->tbl != NULL && ( ! ctl || buf->buf[pos] == '\0'))
1.277 schwarze 1572: return tbl_read(r->tbl, ln, buf->buf, ppos);
1.252 schwarze 1573: if ( ! ctl)
1.277 schwarze 1574: return roff_parsetext(buf, pos, offs);
1.228 schwarze 1575:
1576: /* Skip empty request lines. */
1577:
1.238 schwarze 1578: if (buf->buf[pos] == '"') {
1.228 schwarze 1579: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1580: ln, pos, NULL);
1.277 schwarze 1581: return ROFF_IGN;
1.238 schwarze 1582: } else if (buf->buf[pos] == '\0')
1.277 schwarze 1583: return ROFF_IGN;
1.67 kristaps 1584:
1.79 kristaps 1585: /*
1586: * If a scope is open, go to the child handler for that macro,
1587: * as it may want to preprocess before doing anything with it.
1.125 kristaps 1588: * Don't do so if an equation is open.
1.79 kristaps 1589: */
1.78 kristaps 1590:
1.79 kristaps 1591: if (r->last) {
1592: t = r->last->tok;
1593: assert(roffs[t].sub);
1.277 schwarze 1594: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1595: }
1.78 kristaps 1596:
1.243 schwarze 1597: /* No scope is open. This is a new request or macro. */
1598:
1599: spos = pos;
1600: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1601:
1602: /* Tables ignore most macros. */
1603:
1604: if (r->tbl != NULL && (t == ROFF_MAX || t == ROFF_TS)) {
1605: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1606: ln, pos, buf->buf + spos);
1.257 schwarze 1607: if (t == ROFF_TS)
1.277 schwarze 1608: return ROFF_IGN;
1.257 schwarze 1609: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1610: pos++;
1611: while (buf->buf[pos] != '\0' && buf->buf[pos] == ' ')
1612: pos++;
1.277 schwarze 1613: return tbl_read(r->tbl, ln, buf->buf, pos);
1.243 schwarze 1614: }
1615:
1.79 kristaps 1616: /*
1.243 schwarze 1617: * This is neither a roff request nor a user-defined macro.
1618: * Let the standard macro set parsers handle it.
1.79 kristaps 1619: */
1.67 kristaps 1620:
1.243 schwarze 1621: if (t == ROFF_MAX)
1.277 schwarze 1622: return ROFF_CONT;
1.243 schwarze 1623:
1624: /* Execute a roff request or a user defined macro. */
1.67 kristaps 1625:
1.75 kristaps 1626: assert(roffs[t].proc);
1.277 schwarze 1627: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.74 kristaps 1628: }
1629:
1.117 kristaps 1630: void
1.74 kristaps 1631: roff_endparse(struct roff *r)
1632: {
1633:
1.110 kristaps 1634: if (r->last)
1.221 schwarze 1635: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1636: r->last->line, r->last->col,
1637: roffs[r->last->tok].name);
1.117 kristaps 1638:
1.125 kristaps 1639: if (r->eqn) {
1.221 schwarze 1640: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1641: r->eqn->eqn.ln, r->eqn->eqn.pos, "EQ");
1.151 kristaps 1642: eqn_end(&r->eqn);
1.125 kristaps 1643: }
1644:
1.117 kristaps 1645: if (r->tbl) {
1.221 schwarze 1646: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1647: r->tbl->line, r->tbl->pos, "TS");
1.151 kristaps 1648: tbl_end(&r->tbl);
1.117 kristaps 1649: }
1.67 kristaps 1650: }
1651:
1652: /*
1653: * Parse a roff node's type from the input buffer. This must be in the
1654: * form of ".foo xxx" in the usual way.
1655: */
1656: static enum rofft
1.214 schwarze 1657: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.67 kristaps 1658: {
1.214 schwarze 1659: char *cp;
1.106 kristaps 1660: const char *mac;
1661: size_t maclen;
1.67 kristaps 1662: enum rofft t;
1663:
1.214 schwarze 1664: cp = buf + *pos;
1665:
1666: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.277 schwarze 1667: return ROFF_MAX;
1.67 kristaps 1668:
1.214 schwarze 1669: mac = cp;
1670: maclen = roff_getname(r, &cp, ln, ppos);
1.67 kristaps 1671:
1.106 kristaps 1672: t = (r->current_string = roff_getstrn(r, mac, maclen))
1.155 kristaps 1673: ? ROFF_USERDEF : roffhash_find(mac, maclen);
1.67 kristaps 1674:
1.214 schwarze 1675: if (ROFF_MAX != t)
1676: *pos = cp - buf;
1.67 kristaps 1677:
1.277 schwarze 1678: return t;
1.67 kristaps 1679: }
1680:
1.266 schwarze 1681: /* --- handling of request blocks ----------------------------------------- */
1682:
1.67 kristaps 1683: static enum rofferr
1.76 kristaps 1684: roff_cblock(ROFF_ARGS)
1.67 kristaps 1685: {
1686:
1.79 kristaps 1687: /*
1688: * A block-close `..' should only be invoked as a child of an
1689: * ignore macro, otherwise raise a warning and just ignore it.
1690: */
1691:
1.238 schwarze 1692: if (r->last == NULL) {
1.221 schwarze 1693: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1694: ln, ppos, "..");
1.277 schwarze 1695: return ROFF_IGN;
1.76 kristaps 1696: }
1.67 kristaps 1697:
1.81 kristaps 1698: switch (r->last->tok) {
1.207 schwarze 1699: case ROFF_am:
1.220 schwarze 1700: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.207 schwarze 1701: case ROFF_ami:
1702: case ROFF_de:
1.108 schwarze 1703: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.207 schwarze 1704: case ROFF_dei:
1705: case ROFF_ig:
1.81 kristaps 1706: break;
1707: default:
1.221 schwarze 1708: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1709: ln, ppos, "..");
1.277 schwarze 1710: return ROFF_IGN;
1.76 kristaps 1711: }
1.67 kristaps 1712:
1.238 schwarze 1713: if (buf->buf[pos] != '\0')
1.217 schwarze 1714: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 1715: ".. %s", buf->buf + pos);
1.71 kristaps 1716:
1717: roffnode_pop(r);
1.76 kristaps 1718: roffnode_cleanscope(r);
1.277 schwarze 1719: return ROFF_IGN;
1.71 kristaps 1720:
1.67 kristaps 1721: }
1722:
1.76 kristaps 1723: static void
1724: roffnode_cleanscope(struct roff *r)
1.67 kristaps 1725: {
1726:
1.76 kristaps 1727: while (r->last) {
1.173 schwarze 1728: if (--r->last->endspan != 0)
1.76 kristaps 1729: break;
1730: roffnode_pop(r);
1731: }
1.67 kristaps 1732: }
1733:
1.195 schwarze 1734: static void
1735: roff_ccond(struct roff *r, int ln, int ppos)
1.74 kristaps 1736: {
1737:
1.76 kristaps 1738: if (NULL == r->last) {
1.221 schwarze 1739: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1740: ln, ppos, "\\}");
1.195 schwarze 1741: return;
1.76 kristaps 1742: }
1743:
1.82 kristaps 1744: switch (r->last->tok) {
1.207 schwarze 1745: case ROFF_el:
1746: case ROFF_ie:
1747: case ROFF_if:
1.82 kristaps 1748: break;
1749: default:
1.221 schwarze 1750: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1751: ln, ppos, "\\}");
1.195 schwarze 1752: return;
1.75 kristaps 1753: }
1754:
1.76 kristaps 1755: if (r->last->endspan > -1) {
1.221 schwarze 1756: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1757: ln, ppos, "\\}");
1.195 schwarze 1758: return;
1.76 kristaps 1759: }
1760:
1.75 kristaps 1761: roffnode_pop(r);
1.76 kristaps 1762: roffnode_cleanscope(r);
1.195 schwarze 1763: return;
1.76 kristaps 1764: }
1765:
1766: static enum rofferr
1.80 kristaps 1767: roff_block(ROFF_ARGS)
1.76 kristaps 1768: {
1.220 schwarze 1769: const char *name;
1770: char *iname, *cp;
1.213 schwarze 1771: size_t namesz;
1.106 kristaps 1772:
1.220 schwarze 1773: /* Ignore groff compatibility mode for now. */
1.76 kristaps 1774:
1.238 schwarze 1775: if (tok == ROFF_de1)
1.220 schwarze 1776: tok = ROFF_de;
1.251 schwarze 1777: else if (tok == ROFF_dei1)
1778: tok = ROFF_dei;
1.238 schwarze 1779: else if (tok == ROFF_am1)
1.220 schwarze 1780: tok = ROFF_am;
1.251 schwarze 1781: else if (tok == ROFF_ami1)
1782: tok = ROFF_ami;
1.220 schwarze 1783:
1784: /* Parse the macro name argument. */
1785:
1.238 schwarze 1786: cp = buf->buf + pos;
1787: if (tok == ROFF_ig) {
1.220 schwarze 1788: iname = NULL;
1789: namesz = 0;
1790: } else {
1791: iname = cp;
1792: namesz = roff_getname(r, &cp, ln, ppos);
1793: iname[namesz] = '\0';
1794: }
1.107 kristaps 1795:
1.220 schwarze 1796: /* Resolve the macro name argument if it is indirect. */
1.107 kristaps 1797:
1.238 schwarze 1798: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1799: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.220 schwarze 1800: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1801: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1802: "%.*s", (int)namesz, iname);
1803: namesz = 0;
1804: } else
1805: namesz = strlen(name);
1806: } else
1807: name = iname;
1.107 kristaps 1808:
1.238 schwarze 1809: if (namesz == 0 && tok != ROFF_ig) {
1.220 schwarze 1810: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1811: ln, ppos, roffs[tok].name);
1.277 schwarze 1812: return ROFF_IGN;
1.220 schwarze 1813: }
1.80 kristaps 1814:
1.106 kristaps 1815: roffnode_push(r, tok, name, ln, ppos);
1816:
1817: /*
1818: * At the beginning of a `de' macro, clear the existing string
1819: * with the same name, if there is one. New content will be
1.193 schwarze 1820: * appended from roff_block_text() in multiline mode.
1.106 kristaps 1821: */
1.107 kristaps 1822:
1.238 schwarze 1823: if (tok == ROFF_de || tok == ROFF_dei)
1.213 schwarze 1824: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.76 kristaps 1825:
1.238 schwarze 1826: if (*cp == '\0')
1.277 schwarze 1827: return ROFF_IGN;
1.78 kristaps 1828:
1.220 schwarze 1829: /* Get the custom end marker. */
1.107 kristaps 1830:
1.220 schwarze 1831: iname = cp;
1.213 schwarze 1832: namesz = roff_getname(r, &cp, ln, ppos);
1.220 schwarze 1833:
1834: /* Resolve the end marker if it is indirect. */
1835:
1.238 schwarze 1836: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1837: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.220 schwarze 1838: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1839: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1840: "%.*s", (int)namesz, iname);
1841: namesz = 0;
1842: } else
1843: namesz = strlen(name);
1844: } else
1845: name = iname;
1846:
1.213 schwarze 1847: if (namesz)
1848: r->last->end = mandoc_strndup(name, namesz);
1.78 kristaps 1849:
1.238 schwarze 1850: if (*cp != '\0')
1.217 schwarze 1851: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1852: ln, pos, ".%s ... %s", roffs[tok].name, cp);
1.74 kristaps 1853:
1.277 schwarze 1854: return ROFF_IGN;
1.78 kristaps 1855: }
1856:
1857: static enum rofferr
1.80 kristaps 1858: roff_block_sub(ROFF_ARGS)
1.79 kristaps 1859: {
1860: enum rofft t;
1861: int i, j;
1862:
1863: /*
1864: * First check whether a custom macro exists at this level. If
1865: * it does, then check against it. This is some of groff's
1866: * stranger behaviours. If we encountered a custom end-scope
1867: * tag and that tag also happens to be a "real" macro, then we
1868: * need to try interpreting it again as a real macro. If it's
1869: * not, then return ignore. Else continue.
1870: */
1871:
1872: if (r->last->end) {
1.130 kristaps 1873: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.238 schwarze 1874: if (buf->buf[i] != r->last->end[j])
1.79 kristaps 1875: break;
1876:
1.238 schwarze 1877: if (r->last->end[j] == '\0' &&
1878: (buf->buf[i] == '\0' ||
1879: buf->buf[i] == ' ' ||
1880: buf->buf[i] == '\t')) {
1.79 kristaps 1881: roffnode_pop(r);
1882: roffnode_cleanscope(r);
1883:
1.238 schwarze 1884: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.130 kristaps 1885: i++;
1886:
1887: pos = i;
1.238 schwarze 1888: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1889: ROFF_MAX)
1.277 schwarze 1890: return ROFF_RERUN;
1891: return ROFF_IGN;
1.79 kristaps 1892: }
1893: }
1894:
1895: /*
1896: * If we have no custom end-query or lookup failed, then try
1897: * pulling it out of the hashtable.
1898: */
1899:
1.238 schwarze 1900: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.79 kristaps 1901:
1.238 schwarze 1902: if (t != ROFF_cblock) {
1903: if (tok != ROFF_ig)
1904: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.277 schwarze 1905: return ROFF_IGN;
1.106 kristaps 1906: }
1.79 kristaps 1907:
1908: assert(roffs[t].proc);
1.277 schwarze 1909: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1910: }
1911:
1912: static enum rofferr
1.80 kristaps 1913: roff_block_text(ROFF_ARGS)
1.78 kristaps 1914: {
1915:
1.238 schwarze 1916: if (tok != ROFF_ig)
1917: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.106 kristaps 1918:
1.277 schwarze 1919: return ROFF_IGN;
1.78 kristaps 1920: }
1921:
1922: static enum rofferr
1.82 kristaps 1923: roff_cond_sub(ROFF_ARGS)
1924: {
1925: enum rofft t;
1.139 kristaps 1926: char *ep;
1.198 schwarze 1927: int rr;
1.82 kristaps 1928:
1929: rr = r->last->rule;
1.139 kristaps 1930: roffnode_cleanscope(r);
1.238 schwarze 1931: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.82 kristaps 1932:
1.139 kristaps 1933: /*
1.177 schwarze 1934: * Fully handle known macros when they are structurally
1935: * required or when the conditional evaluated to true.
1.87 kristaps 1936: */
1937:
1.238 schwarze 1938: if ((t != ROFF_MAX) &&
1939: (rr || roffs[t].flags & ROFFMAC_STRUCT)) {
1.177 schwarze 1940: assert(roffs[t].proc);
1.277 schwarze 1941: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.177 schwarze 1942: }
1.144 kristaps 1943:
1.196 schwarze 1944: /*
1945: * If `\}' occurs on a macro line without a preceding macro,
1946: * drop the line completely.
1947: */
1948:
1.238 schwarze 1949: ep = buf->buf + pos;
1950: if (ep[0] == '\\' && ep[1] == '}')
1.198 schwarze 1951: rr = 0;
1.196 schwarze 1952:
1.177 schwarze 1953: /* Always check for the closing delimiter `\}'. */
1.144 kristaps 1954:
1.238 schwarze 1955: while ((ep = strchr(ep, '\\')) != NULL) {
1956: if (*(++ep) == '}') {
1.197 schwarze 1957: *ep = '&';
1.238 schwarze 1958: roff_ccond(r, ln, ep - buf->buf - 1);
1.197 schwarze 1959: }
1.247 schwarze 1960: if (*ep != '\0')
1961: ++ep;
1.177 schwarze 1962: }
1.277 schwarze 1963: return rr ? ROFF_CONT : ROFF_IGN;
1.82 kristaps 1964: }
1965:
1966: static enum rofferr
1967: roff_cond_text(ROFF_ARGS)
1.78 kristaps 1968: {
1.140 kristaps 1969: char *ep;
1.198 schwarze 1970: int rr;
1.82 kristaps 1971:
1972: rr = r->last->rule;
1.140 kristaps 1973: roffnode_cleanscope(r);
1.82 kristaps 1974:
1.238 schwarze 1975: ep = buf->buf + pos;
1976: while ((ep = strchr(ep, '\\')) != NULL) {
1977: if (*(++ep) == '}') {
1.197 schwarze 1978: *ep = '&';
1.238 schwarze 1979: roff_ccond(r, ln, ep - buf->buf - 1);
1.197 schwarze 1980: }
1.247 schwarze 1981: if (*ep != '\0')
1982: ++ep;
1.78 kristaps 1983: }
1.277 schwarze 1984: return rr ? ROFF_CONT : ROFF_IGN;
1.74 kristaps 1985: }
1986:
1.266 schwarze 1987: /* --- handling of numeric and conditional expressions -------------------- */
1988:
1.204 schwarze 1989: /*
1990: * Parse a single signed integer number. Stop at the first non-digit.
1991: * If there is at least one digit, return success and advance the
1992: * parse point, else return failure and let the parse point unchanged.
1993: * Ignore overflows, treat them just like the C language.
1994: */
1.184 schwarze 1995: static int
1.261 schwarze 1996: roff_getnum(const char *v, int *pos, int *res, int flags)
1.184 schwarze 1997: {
1.261 schwarze 1998: int myres, scaled, n, p;
1.206 schwarze 1999:
2000: if (NULL == res)
2001: res = &myres;
1.184 schwarze 2002:
2003: p = *pos;
2004: n = v[p] == '-';
1.261 schwarze 2005: if (n || v[p] == '+')
1.184 schwarze 2006: p++;
2007:
1.261 schwarze 2008: if (flags & ROFFNUM_WHITE)
2009: while (isspace((unsigned char)v[p]))
2010: p++;
2011:
1.184 schwarze 2012: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.204 schwarze 2013: *res = 10 * *res + v[p] - '0';
1.184 schwarze 2014: if (p == *pos + n)
2015: return 0;
2016:
2017: if (n)
2018: *res = -*res;
2019:
1.254 schwarze 2020: /* Each number may be followed by one optional scaling unit. */
2021:
2022: switch (v[p]) {
2023: case 'f':
1.261 schwarze 2024: scaled = *res * 65536;
1.254 schwarze 2025: break;
2026: case 'i':
1.261 schwarze 2027: scaled = *res * 240;
1.254 schwarze 2028: break;
2029: case 'c':
1.261 schwarze 2030: scaled = *res * 240 / 2.54;
1.254 schwarze 2031: break;
2032: case 'v':
2033: case 'P':
1.261 schwarze 2034: scaled = *res * 40;
1.254 schwarze 2035: break;
2036: case 'm':
2037: case 'n':
1.261 schwarze 2038: scaled = *res * 24;
1.254 schwarze 2039: break;
2040: case 'p':
1.261 schwarze 2041: scaled = *res * 10 / 3;
1.254 schwarze 2042: break;
2043: case 'u':
1.261 schwarze 2044: scaled = *res;
1.254 schwarze 2045: break;
2046: case 'M':
1.261 schwarze 2047: scaled = *res * 6 / 25;
1.254 schwarze 2048: break;
2049: default:
1.261 schwarze 2050: scaled = *res;
1.254 schwarze 2051: p--;
2052: break;
2053: }
1.261 schwarze 2054: if (flags & ROFFNUM_SCALE)
2055: *res = scaled;
1.254 schwarze 2056:
2057: *pos = p + 1;
1.277 schwarze 2058: return 1;
1.184 schwarze 2059: }
2060:
1.198 schwarze 2061: /*
2062: * Evaluate a string comparison condition.
2063: * The first character is the delimiter.
2064: * Succeed if the string up to its second occurrence
2065: * matches the string up to its third occurence.
2066: * Advance the cursor after the third occurrence
2067: * or lacking that, to the end of the line.
2068: */
2069: static int
2070: roff_evalstrcond(const char *v, int *pos)
2071: {
2072: const char *s1, *s2, *s3;
2073: int match;
2074:
2075: match = 0;
2076: s1 = v + *pos; /* initial delimiter */
2077: s2 = s1 + 1; /* for scanning the first string */
2078: s3 = strchr(s2, *s1); /* for scanning the second string */
2079:
2080: if (NULL == s3) /* found no middle delimiter */
2081: goto out;
2082:
2083: while ('\0' != *++s3) {
2084: if (*s2 != *s3) { /* mismatch */
2085: s3 = strchr(s3, *s1);
2086: break;
2087: }
2088: if (*s3 == *s1) { /* found the final delimiter */
2089: match = 1;
2090: break;
2091: }
2092: s2++;
2093: }
2094:
2095: out:
2096: if (NULL == s3)
2097: s3 = strchr(s2, '\0');
1.242 schwarze 2098: else if (*s3 != '\0')
1.198 schwarze 2099: s3++;
2100: *pos = s3 - v;
1.277 schwarze 2101: return match;
1.198 schwarze 2102: }
2103:
1.204 schwarze 2104: /*
2105: * Evaluate an optionally negated single character, numerical,
2106: * or string condition.
2107: */
1.198 schwarze 2108: static int
1.271 schwarze 2109: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.88 kristaps 2110: {
1.271 schwarze 2111: char *cp, *name;
2112: size_t sz;
1.241 schwarze 2113: int number, savepos, wanttrue;
1.88 kristaps 2114:
1.198 schwarze 2115: if ('!' == v[*pos]) {
2116: wanttrue = 0;
2117: (*pos)++;
2118: } else
2119: wanttrue = 1;
2120:
1.88 kristaps 2121: switch (v[*pos]) {
1.240 schwarze 2122: case '\0':
1.277 schwarze 2123: return 0;
1.207 schwarze 2124: case 'n':
2125: case 'o':
1.88 kristaps 2126: (*pos)++;
1.277 schwarze 2127: return wanttrue;
1.207 schwarze 2128: case 'c':
2129: case 'd':
2130: case 'e':
2131: case 't':
1.239 schwarze 2132: case 'v':
1.88 kristaps 2133: (*pos)++;
1.277 schwarze 2134: return !wanttrue;
1.271 schwarze 2135: case 'r':
2136: cp = name = v + ++*pos;
2137: sz = roff_getname(r, &cp, ln, *pos);
2138: *pos = cp - v;
1.277 schwarze 2139: return (sz && roff_hasregn(r, name, sz)) == wanttrue;
1.88 kristaps 2140: default:
2141: break;
2142: }
2143:
1.241 schwarze 2144: savepos = *pos;
1.261 schwarze 2145: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.277 schwarze 2146: return (number > 0) == wanttrue;
1.241 schwarze 2147: else if (*pos == savepos)
1.277 schwarze 2148: return roff_evalstrcond(v, pos) == wanttrue;
1.204 schwarze 2149: else
1.277 schwarze 2150: return 0;
1.88 kristaps 2151: }
2152:
1.74 kristaps 2153: static enum rofferr
1.103 kristaps 2154: roff_line_ignore(ROFF_ARGS)
1.89 kristaps 2155: {
1.123 schwarze 2156:
1.277 schwarze 2157: return ROFF_IGN;
1.89 kristaps 2158: }
2159:
1.104 kristaps 2160: static enum rofferr
1.251 schwarze 2161: roff_insec(ROFF_ARGS)
2162: {
2163:
2164: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
2165: ln, ppos, roffs[tok].name);
1.277 schwarze 2166: return ROFF_IGN;
1.251 schwarze 2167: }
2168:
2169: static enum rofferr
2170: roff_unsupp(ROFF_ARGS)
2171: {
2172:
2173: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
2174: ln, ppos, roffs[tok].name);
1.277 schwarze 2175: return ROFF_IGN;
1.251 schwarze 2176: }
2177:
2178: static enum rofferr
1.82 kristaps 2179: roff_cond(ROFF_ARGS)
1.74 kristaps 2180: {
1.173 schwarze 2181:
2182: roffnode_push(r, tok, NULL, ln, ppos);
1.74 kristaps 2183:
1.207 schwarze 2184: /*
1.134 kristaps 2185: * An `.el' has no conditional body: it will consume the value
2186: * of the current rstack entry set in prior `ie' calls or
1.207 schwarze 2187: * defaults to DENY.
1.134 kristaps 2188: *
2189: * If we're not an `el', however, then evaluate the conditional.
2190: */
1.133 kristaps 2191:
1.238 schwarze 2192: r->last->rule = tok == ROFF_el ?
1.207 schwarze 2193: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.238 schwarze 2194: roff_evalcond(r, ln, buf->buf, &pos);
1.77 kristaps 2195:
1.134 kristaps 2196: /*
2197: * An if-else will put the NEGATION of the current evaluated
2198: * conditional into the stack of rules.
2199: */
2200:
1.238 schwarze 2201: if (tok == ROFF_ie) {
1.223 schwarze 2202: if (r->rstackpos + 1 == r->rstacksz) {
2203: r->rstacksz += 16;
2204: r->rstack = mandoc_reallocarray(r->rstack,
2205: r->rstacksz, sizeof(int));
1.134 kristaps 2206: }
1.198 schwarze 2207: r->rstack[++r->rstackpos] = !r->last->rule;
1.82 kristaps 2208: }
1.88 kristaps 2209:
2210: /* If the parent has false as its rule, then so do we. */
2211:
1.198 schwarze 2212: if (r->last->parent && !r->last->parent->rule)
2213: r->last->rule = 0;
1.88 kristaps 2214:
2215: /*
1.173 schwarze 2216: * Determine scope.
2217: * If there is nothing on the line after the conditional,
2218: * not even whitespace, use next-line scope.
1.88 kristaps 2219: */
1.74 kristaps 2220:
1.238 schwarze 2221: if (buf->buf[pos] == '\0') {
1.173 schwarze 2222: r->last->endspan = 2;
2223: goto out;
2224: }
2225:
1.238 schwarze 2226: while (buf->buf[pos] == ' ')
1.173 schwarze 2227: pos++;
2228:
2229: /* An opening brace requests multiline scope. */
1.75 kristaps 2230:
1.238 schwarze 2231: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.75 kristaps 2232: r->last->endspan = -1;
2233: pos += 2;
1.272 schwarze 2234: while (buf->buf[pos] == ' ')
2235: pos++;
1.173 schwarze 2236: goto out;
1.207 schwarze 2237: }
1.74 kristaps 2238:
1.77 kristaps 2239: /*
1.173 schwarze 2240: * Anything else following the conditional causes
2241: * single-line scope. Warn if the scope contains
2242: * nothing but trailing whitespace.
1.77 kristaps 2243: */
2244:
1.238 schwarze 2245: if (buf->buf[pos] == '\0')
1.216 schwarze 2246: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
2247: ln, ppos, roffs[tok].name);
1.77 kristaps 2248:
1.173 schwarze 2249: r->last->endspan = 1;
1.74 kristaps 2250:
1.173 schwarze 2251: out:
1.75 kristaps 2252: *offs = pos;
1.277 schwarze 2253: return ROFF_RERUN;
1.83 schwarze 2254: }
2255:
2256: static enum rofferr
1.92 schwarze 2257: roff_ds(ROFF_ARGS)
2258: {
1.212 schwarze 2259: char *string;
2260: const char *name;
2261: size_t namesz;
1.96 kristaps 2262:
1.251 schwarze 2263: /* Ignore groff compatibility mode for now. */
2264:
2265: if (tok == ROFF_ds1)
2266: tok = ROFF_ds;
2267: else if (tok == ROFF_as1)
2268: tok = ROFF_as;
2269:
1.96 kristaps 2270: /*
1.212 schwarze 2271: * The first word is the name of the string.
2272: * If it is empty or terminated by an escape sequence,
2273: * abort the `ds' request without defining anything.
1.96 kristaps 2274: */
1.92 schwarze 2275:
1.238 schwarze 2276: name = string = buf->buf + pos;
2277: if (*name == '\0')
1.277 schwarze 2278: return ROFF_IGN;
1.92 schwarze 2279:
1.212 schwarze 2280: namesz = roff_getname(r, &string, ln, pos);
1.238 schwarze 2281: if (name[namesz] == '\\')
1.277 schwarze 2282: return ROFF_IGN;
1.212 schwarze 2283:
2284: /* Read past the initial double-quote, if any. */
1.238 schwarze 2285: if (*string == '"')
1.92 schwarze 2286: string++;
2287:
1.96 kristaps 2288: /* The rest is the value. */
1.212 schwarze 2289: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2290: ROFF_as == tok);
1.277 schwarze 2291: return ROFF_IGN;
1.92 schwarze 2292: }
2293:
1.204 schwarze 2294: /*
2295: * Parse a single operator, one or two characters long.
2296: * If the operator is recognized, return success and advance the
2297: * parse point, else return failure and let the parse point unchanged.
2298: */
2299: static int
2300: roff_getop(const char *v, int *pos, char *res)
2301: {
2302:
2303: *res = v[*pos];
2304:
2305: switch (*res) {
1.207 schwarze 2306: case '+':
2307: case '-':
2308: case '*':
2309: case '/':
2310: case '%':
2311: case '&':
2312: case ':':
1.204 schwarze 2313: break;
2314: case '<':
2315: switch (v[*pos + 1]) {
1.207 schwarze 2316: case '=':
1.204 schwarze 2317: *res = 'l';
2318: (*pos)++;
2319: break;
1.207 schwarze 2320: case '>':
1.204 schwarze 2321: *res = '!';
2322: (*pos)++;
2323: break;
1.207 schwarze 2324: case '?':
1.204 schwarze 2325: *res = 'i';
2326: (*pos)++;
2327: break;
2328: default:
2329: break;
2330: }
2331: break;
2332: case '>':
2333: switch (v[*pos + 1]) {
1.207 schwarze 2334: case '=':
1.204 schwarze 2335: *res = 'g';
2336: (*pos)++;
2337: break;
1.207 schwarze 2338: case '?':
1.204 schwarze 2339: *res = 'a';
2340: (*pos)++;
2341: break;
2342: default:
2343: break;
2344: }
2345: break;
2346: case '=':
2347: if ('=' == v[*pos + 1])
2348: (*pos)++;
2349: break;
2350: default:
1.277 schwarze 2351: return 0;
1.204 schwarze 2352: }
2353: (*pos)++;
2354:
1.277 schwarze 2355: return *res;
1.204 schwarze 2356: }
2357:
2358: /*
2359: * Evaluate either a parenthesized numeric expression
2360: * or a single signed integer number.
2361: */
2362: static int
1.235 schwarze 2363: roff_evalpar(struct roff *r, int ln,
1.261 schwarze 2364: const char *v, int *pos, int *res, int flags)
1.204 schwarze 2365: {
2366:
2367: if ('(' != v[*pos])
1.277 schwarze 2368: return roff_getnum(v, pos, res, flags);
1.204 schwarze 2369:
2370: (*pos)++;
1.261 schwarze 2371: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.277 schwarze 2372: return 0;
1.204 schwarze 2373:
1.206 schwarze 2374: /*
2375: * Omission of the closing parenthesis
2376: * is an error in validation mode,
2377: * but ignored in evaluation mode.
2378: */
2379:
1.204 schwarze 2380: if (')' == v[*pos])
2381: (*pos)++;
1.206 schwarze 2382: else if (NULL == res)
1.277 schwarze 2383: return 0;
1.204 schwarze 2384:
1.277 schwarze 2385: return 1;
1.204 schwarze 2386: }
2387:
2388: /*
2389: * Evaluate a complete numeric expression.
2390: * Proceed left to right, there is no concept of precedence.
2391: */
2392: static int
1.235 schwarze 2393: roff_evalnum(struct roff *r, int ln, const char *v,
1.261 schwarze 2394: int *pos, int *res, int flags)
1.204 schwarze 2395: {
2396: int mypos, operand2;
2397: char operator;
2398:
2399: if (NULL == pos) {
2400: mypos = 0;
2401: pos = &mypos;
2402: }
2403:
1.261 schwarze 2404: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2405: while (isspace((unsigned char)v[*pos]))
2406: (*pos)++;
2407:
1.261 schwarze 2408: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.277 schwarze 2409: return 0;
1.204 schwarze 2410:
2411: while (1) {
1.261 schwarze 2412: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2413: while (isspace((unsigned char)v[*pos]))
2414: (*pos)++;
2415:
2416: if ( ! roff_getop(v, pos, &operator))
2417: break;
2418:
1.261 schwarze 2419: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2420: while (isspace((unsigned char)v[*pos]))
2421: (*pos)++;
2422:
1.261 schwarze 2423: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.277 schwarze 2424: return 0;
1.204 schwarze 2425:
1.261 schwarze 2426: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2427: while (isspace((unsigned char)v[*pos]))
2428: (*pos)++;
1.206 schwarze 2429:
2430: if (NULL == res)
2431: continue;
1.204 schwarze 2432:
2433: switch (operator) {
1.207 schwarze 2434: case '+':
1.204 schwarze 2435: *res += operand2;
2436: break;
1.207 schwarze 2437: case '-':
1.204 schwarze 2438: *res -= operand2;
2439: break;
1.207 schwarze 2440: case '*':
1.204 schwarze 2441: *res *= operand2;
2442: break;
1.207 schwarze 2443: case '/':
1.244 schwarze 2444: if (operand2 == 0) {
1.235 schwarze 2445: mandoc_msg(MANDOCERR_DIVZERO,
1.234 kristaps 2446: r->parse, ln, *pos, v);
2447: *res = 0;
2448: break;
2449: }
1.204 schwarze 2450: *res /= operand2;
2451: break;
1.207 schwarze 2452: case '%':
1.244 schwarze 2453: if (operand2 == 0) {
2454: mandoc_msg(MANDOCERR_DIVZERO,
2455: r->parse, ln, *pos, v);
2456: *res = 0;
2457: break;
2458: }
1.204 schwarze 2459: *res %= operand2;
2460: break;
1.207 schwarze 2461: case '<':
1.204 schwarze 2462: *res = *res < operand2;
2463: break;
1.207 schwarze 2464: case '>':
1.204 schwarze 2465: *res = *res > operand2;
2466: break;
1.207 schwarze 2467: case 'l':
1.204 schwarze 2468: *res = *res <= operand2;
2469: break;
1.207 schwarze 2470: case 'g':
1.204 schwarze 2471: *res = *res >= operand2;
2472: break;
1.207 schwarze 2473: case '=':
1.204 schwarze 2474: *res = *res == operand2;
2475: break;
1.207 schwarze 2476: case '!':
1.204 schwarze 2477: *res = *res != operand2;
2478: break;
1.207 schwarze 2479: case '&':
1.204 schwarze 2480: *res = *res && operand2;
2481: break;
1.207 schwarze 2482: case ':':
1.204 schwarze 2483: *res = *res || operand2;
2484: break;
1.207 schwarze 2485: case 'i':
1.204 schwarze 2486: if (operand2 < *res)
2487: *res = operand2;
2488: break;
1.207 schwarze 2489: case 'a':
1.204 schwarze 2490: if (operand2 > *res)
2491: *res = operand2;
2492: break;
2493: default:
2494: abort();
2495: }
2496: }
1.277 schwarze 2497: return 1;
1.204 schwarze 2498: }
2499:
1.266 schwarze 2500: /* --- register management ------------------------------------------------ */
2501:
1.180 schwarze 2502: void
1.187 schwarze 2503: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.147 kristaps 2504: {
1.180 schwarze 2505: struct roffreg *reg;
2506:
2507: /* Search for an existing register with the same name. */
2508: reg = r->regtab;
2509:
2510: while (reg && strcmp(name, reg->key.p))
2511: reg = reg->next;
1.147 kristaps 2512:
1.180 schwarze 2513: if (NULL == reg) {
2514: /* Create a new register. */
2515: reg = mandoc_malloc(sizeof(struct roffreg));
2516: reg->key.p = mandoc_strdup(name);
2517: reg->key.sz = strlen(name);
1.187 schwarze 2518: reg->val = 0;
1.180 schwarze 2519: reg->next = r->regtab;
2520: r->regtab = reg;
2521: }
2522:
1.187 schwarze 2523: if ('+' == sign)
2524: reg->val += val;
2525: else if ('-' == sign)
2526: reg->val -= val;
2527: else
2528: reg->val = val;
1.147 kristaps 2529: }
2530:
1.192 schwarze 2531: /*
2532: * Handle some predefined read-only number registers.
2533: * For now, return -1 if the requested register is not predefined;
2534: * in case a predefined read-only register having the value -1
2535: * were to turn up, another special value would have to be chosen.
2536: */
2537: static int
1.273 schwarze 2538: roff_getregro(const struct roff *r, const char *name)
1.192 schwarze 2539: {
2540:
2541: switch (*name) {
1.273 schwarze 2542: case '$': /* Number of arguments of the last macro evaluated. */
1.277 schwarze 2543: return r->argc;
1.207 schwarze 2544: case 'A': /* ASCII approximation mode is always off. */
1.277 schwarze 2545: return 0;
1.207 schwarze 2546: case 'g': /* Groff compatibility mode is always on. */
1.277 schwarze 2547: return 1;
1.207 schwarze 2548: case 'H': /* Fixed horizontal resolution. */
1.277 schwarze 2549: return 24;
1.207 schwarze 2550: case 'j': /* Always adjust left margin only. */
1.277 schwarze 2551: return 0;
1.207 schwarze 2552: case 'T': /* Some output device is always defined. */
1.277 schwarze 2553: return 1;
1.207 schwarze 2554: case 'V': /* Fixed vertical resolution. */
1.277 schwarze 2555: return 40;
1.192 schwarze 2556: default:
1.277 schwarze 2557: return -1;
1.192 schwarze 2558: }
2559: }
2560:
1.181 schwarze 2561: int
1.180 schwarze 2562: roff_getreg(const struct roff *r, const char *name)
1.147 kristaps 2563: {
1.180 schwarze 2564: struct roffreg *reg;
1.192 schwarze 2565: int val;
2566:
2567: if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) {
1.273 schwarze 2568: val = roff_getregro(r, name + 1);
1.192 schwarze 2569: if (-1 != val)
1.277 schwarze 2570: return val;
1.192 schwarze 2571: }
1.180 schwarze 2572:
2573: for (reg = r->regtab; reg; reg = reg->next)
2574: if (0 == strcmp(name, reg->key.p))
1.277 schwarze 2575: return reg->val;
1.181 schwarze 2576:
1.277 schwarze 2577: return 0;
1.181 schwarze 2578: }
2579:
2580: static int
2581: roff_getregn(const struct roff *r, const char *name, size_t len)
2582: {
2583: struct roffreg *reg;
1.192 schwarze 2584: int val;
2585:
2586: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2587: val = roff_getregro(r, name + 1);
1.192 schwarze 2588: if (-1 != val)
1.277 schwarze 2589: return val;
1.192 schwarze 2590: }
1.181 schwarze 2591:
2592: for (reg = r->regtab; reg; reg = reg->next)
2593: if (len == reg->key.sz &&
2594: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2595: return reg->val;
1.271 schwarze 2596:
1.277 schwarze 2597: return 0;
1.271 schwarze 2598: }
2599:
2600: static int
2601: roff_hasregn(const struct roff *r, const char *name, size_t len)
2602: {
2603: struct roffreg *reg;
2604: int val;
2605:
2606: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2607: val = roff_getregro(r, name + 1);
1.271 schwarze 2608: if (-1 != val)
1.277 schwarze 2609: return 1;
1.271 schwarze 2610: }
2611:
2612: for (reg = r->regtab; reg; reg = reg->next)
2613: if (len == reg->key.sz &&
2614: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2615: return 1;
1.147 kristaps 2616:
1.277 schwarze 2617: return 0;
1.147 kristaps 2618: }
2619:
1.180 schwarze 2620: static void
2621: roff_freereg(struct roffreg *reg)
1.147 kristaps 2622: {
1.180 schwarze 2623: struct roffreg *old_reg;
1.147 kristaps 2624:
1.180 schwarze 2625: while (NULL != reg) {
2626: free(reg->key.p);
2627: old_reg = reg;
2628: reg = reg->next;
2629: free(old_reg);
2630: }
1.147 kristaps 2631: }
1.92 schwarze 2632:
2633: static enum rofferr
1.89 kristaps 2634: roff_nr(ROFF_ARGS)
1.83 schwarze 2635: {
1.212 schwarze 2636: char *key, *val;
2637: size_t keysz;
1.138 kristaps 2638: int iv;
1.187 schwarze 2639: char sign;
1.89 kristaps 2640:
1.238 schwarze 2641: key = val = buf->buf + pos;
2642: if (*key == '\0')
1.277 schwarze 2643: return ROFF_IGN;
1.212 schwarze 2644:
2645: keysz = roff_getname(r, &val, ln, pos);
1.238 schwarze 2646: if (key[keysz] == '\\')
1.277 schwarze 2647: return ROFF_IGN;
1.212 schwarze 2648: key[keysz] = '\0';
1.89 kristaps 2649:
1.187 schwarze 2650: sign = *val;
1.238 schwarze 2651: if (sign == '+' || sign == '-')
1.187 schwarze 2652: val++;
2653:
1.261 schwarze 2654: if (roff_evalnum(r, ln, val, NULL, &iv, ROFFNUM_SCALE))
1.204 schwarze 2655: roff_setreg(r, key, iv, sign);
1.109 kristaps 2656:
1.277 schwarze 2657: return ROFF_IGN;
1.203 schwarze 2658: }
2659:
2660: static enum rofferr
2661: roff_rr(ROFF_ARGS)
2662: {
2663: struct roffreg *reg, **prev;
1.212 schwarze 2664: char *name, *cp;
2665: size_t namesz;
1.203 schwarze 2666:
1.238 schwarze 2667: name = cp = buf->buf + pos;
2668: if (*name == '\0')
1.277 schwarze 2669: return ROFF_IGN;
1.212 schwarze 2670: namesz = roff_getname(r, &cp, ln, pos);
2671: name[namesz] = '\0';
1.203 schwarze 2672:
2673: prev = &r->regtab;
2674: while (1) {
2675: reg = *prev;
1.238 schwarze 2676: if (reg == NULL || !strcmp(name, reg->key.p))
1.203 schwarze 2677: break;
2678: prev = ®->next;
2679: }
1.238 schwarze 2680: if (reg != NULL) {
1.203 schwarze 2681: *prev = reg->next;
2682: free(reg->key.p);
2683: free(reg);
2684: }
1.277 schwarze 2685: return ROFF_IGN;
1.122 schwarze 2686: }
2687:
1.266 schwarze 2688: /* --- handler functions for roff requests -------------------------------- */
2689:
1.122 schwarze 2690: static enum rofferr
2691: roff_rm(ROFF_ARGS)
2692: {
2693: const char *name;
2694: char *cp;
1.212 schwarze 2695: size_t namesz;
1.122 schwarze 2696:
1.238 schwarze 2697: cp = buf->buf + pos;
2698: while (*cp != '\0') {
1.212 schwarze 2699: name = cp;
1.238 schwarze 2700: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.212 schwarze 2701: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.238 schwarze 2702: if (name[namesz] == '\\')
1.212 schwarze 2703: break;
1.122 schwarze 2704: }
1.277 schwarze 2705: return ROFF_IGN;
1.178 schwarze 2706: }
2707:
2708: static enum rofferr
2709: roff_it(ROFF_ARGS)
2710: {
2711: int iv;
2712:
2713: /* Parse the number of lines. */
1.261 schwarze 2714:
2715: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.222 schwarze 2716: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.238 schwarze 2717: ln, ppos, buf->buf + 1);
1.277 schwarze 2718: return ROFF_IGN;
1.178 schwarze 2719: }
2720:
1.262 schwarze 2721: while (isspace((unsigned char)buf->buf[pos]))
2722: pos++;
2723:
2724: /*
2725: * Arm the input line trap.
2726: * Special-casing "an-trap" is an ugly workaround to cope
2727: * with DocBook stupidly fiddling with man(7) internals.
2728: */
1.261 schwarze 2729:
1.178 schwarze 2730: roffit_lines = iv;
1.262 schwarze 2731: roffit_macro = mandoc_strdup(iv != 1 ||
2732: strcmp(buf->buf + pos, "an-trap") ?
2733: buf->buf + pos : "br");
1.277 schwarze 2734: return ROFF_IGN;
1.175 schwarze 2735: }
2736:
2737: static enum rofferr
2738: roff_Dd(ROFF_ARGS)
2739: {
2740: const char *const *cp;
2741:
1.227 schwarze 2742: if ((r->options & (MPARSE_MDOC | MPARSE_QUICK)) == 0)
1.175 schwarze 2743: for (cp = __mdoc_reserved; *cp; cp++)
2744: roff_setstr(r, *cp, NULL, 0);
2745:
1.227 schwarze 2746: if (r->format == 0)
2747: r->format = MPARSE_MDOC;
2748:
1.277 schwarze 2749: return ROFF_CONT;
1.175 schwarze 2750: }
2751:
2752: static enum rofferr
2753: roff_TH(ROFF_ARGS)
2754: {
2755: const char *const *cp;
2756:
1.227 schwarze 2757: if ((r->options & MPARSE_QUICK) == 0)
1.175 schwarze 2758: for (cp = __man_reserved; *cp; cp++)
2759: roff_setstr(r, *cp, NULL, 0);
2760:
1.227 schwarze 2761: if (r->format == 0)
2762: r->format = MPARSE_MAN;
2763:
1.277 schwarze 2764: return ROFF_CONT;
1.109 kristaps 2765: }
2766:
2767: static enum rofferr
2768: roff_TE(ROFF_ARGS)
2769: {
2770:
2771: if (NULL == r->tbl)
1.221 schwarze 2772: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2773: ln, ppos, "TE");
1.258 schwarze 2774: else if ( ! tbl_end(&r->tbl)) {
2775: free(buf->buf);
2776: buf->buf = mandoc_strdup(".sp");
2777: buf->sz = 4;
1.277 schwarze 2778: return ROFF_REPARSE;
1.258 schwarze 2779: }
1.277 schwarze 2780: return ROFF_IGN;
1.112 kristaps 2781: }
2782:
2783: static enum rofferr
2784: roff_T_(ROFF_ARGS)
2785: {
2786:
2787: if (NULL == r->tbl)
1.221 schwarze 2788: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2789: ln, ppos, "T&");
1.112 kristaps 2790: else
1.116 kristaps 2791: tbl_restart(ppos, ln, r->tbl);
1.112 kristaps 2792:
1.277 schwarze 2793: return ROFF_IGN;
1.109 kristaps 2794: }
2795:
1.230 schwarze 2796: /*
2797: * Handle in-line equation delimiters.
2798: */
2799: static enum rofferr
1.238 schwarze 2800: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.151 kristaps 2801: {
1.233 schwarze 2802: char *cp1, *cp2;
2803: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.151 kristaps 2804:
1.230 schwarze 2805: /*
2806: * Outside equations, look for an opening delimiter.
2807: * If we are inside an equation, we already know it is
2808: * in-line, or this function wouldn't have been called;
2809: * so look for a closing delimiter.
2810: */
2811:
1.238 schwarze 2812: cp1 = buf->buf + pos;
1.230 schwarze 2813: cp2 = strchr(cp1, r->eqn == NULL ?
2814: r->last_eqn->odelim : r->last_eqn->cdelim);
2815: if (cp2 == NULL)
1.277 schwarze 2816: return ROFF_CONT;
1.230 schwarze 2817:
1.233 schwarze 2818: *cp2++ = '\0';
2819: bef_pr = bef_nl = aft_nl = aft_pr = "";
2820:
2821: /* Handle preceding text, protecting whitespace. */
2822:
1.238 schwarze 2823: if (*buf->buf != '\0') {
1.233 schwarze 2824: if (r->eqn == NULL)
2825: bef_pr = "\\&";
2826: bef_nl = "\n";
2827: }
2828:
2829: /*
2830: * Prepare replacing the delimiter with an equation macro
2831: * and drop leading white space from the equation.
2832: */
1.230 schwarze 2833:
1.233 schwarze 2834: if (r->eqn == NULL) {
2835: while (*cp2 == ' ')
2836: cp2++;
2837: mac = ".EQ";
2838: } else
2839: mac = ".EN";
2840:
2841: /* Handle following text, protecting whitespace. */
2842:
2843: if (*cp2 != '\0') {
2844: aft_nl = "\n";
2845: if (r->eqn != NULL)
2846: aft_pr = "\\&";
2847: }
2848:
2849: /* Do the actual replacement. */
2850:
1.238 schwarze 2851: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.233 schwarze 2852: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.238 schwarze 2853: free(buf->buf);
2854: buf->buf = cp1;
1.230 schwarze 2855:
2856: /* Toggle the in-line state of the eqn subsystem. */
2857:
2858: r->eqn_inline = r->eqn == NULL;
1.277 schwarze 2859: return ROFF_REPARSE;
1.151 kristaps 2860: }
2861:
1.235 schwarze 2862: static enum rofferr
2863: roff_EQ(ROFF_ARGS)
1.125 kristaps 2864: {
1.151 kristaps 2865: struct eqn_node *e;
1.125 kristaps 2866:
1.238 schwarze 2867: assert(r->eqn == NULL);
1.235 schwarze 2868: e = eqn_alloc(ppos, ln, r->parse);
1.125 kristaps 2869:
1.230 schwarze 2870: if (r->last_eqn) {
1.125 kristaps 2871: r->last_eqn->next = e;
1.230 schwarze 2872: e->delim = r->last_eqn->delim;
2873: e->odelim = r->last_eqn->odelim;
2874: e->cdelim = r->last_eqn->cdelim;
2875: } else
1.125 kristaps 2876: r->first_eqn = r->last_eqn = e;
2877:
2878: r->eqn = r->last_eqn = e;
1.151 kristaps 2879:
1.238 schwarze 2880: if (buf->buf[pos] != '\0')
1.235 schwarze 2881: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 2882: ".EQ %s", buf->buf + pos);
1.151 kristaps 2883:
1.277 schwarze 2884: return ROFF_IGN;
1.125 kristaps 2885: }
2886:
2887: static enum rofferr
2888: roff_EN(ROFF_ARGS)
2889: {
2890:
1.221 schwarze 2891: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
1.277 schwarze 2892: return ROFF_IGN;
1.125 kristaps 2893: }
2894:
2895: static enum rofferr
1.109 kristaps 2896: roff_TS(ROFF_ARGS)
2897: {
1.176 schwarze 2898: struct tbl_node *tbl;
1.89 kristaps 2899:
1.115 kristaps 2900: if (r->tbl) {
1.221 schwarze 2901: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
2902: ln, ppos, "TS breaks TS");
1.151 kristaps 2903: tbl_end(&r->tbl);
1.115 kristaps 2904: }
1.83 schwarze 2905:
1.176 schwarze 2906: tbl = tbl_alloc(ppos, ln, r->parse);
1.113 kristaps 2907:
2908: if (r->last_tbl)
1.176 schwarze 2909: r->last_tbl->next = tbl;
1.113 kristaps 2910: else
1.176 schwarze 2911: r->first_tbl = r->last_tbl = tbl;
1.113 kristaps 2912:
1.176 schwarze 2913: r->tbl = r->last_tbl = tbl;
1.277 schwarze 2914: return ROFF_IGN;
1.251 schwarze 2915: }
2916:
2917: static enum rofferr
2918: roff_brp(ROFF_ARGS)
2919: {
2920:
2921: buf->buf[pos - 1] = '\0';
1.277 schwarze 2922: return ROFF_CONT;
1.92 schwarze 2923: }
2924:
1.105 kristaps 2925: static enum rofferr
1.174 kristaps 2926: roff_cc(ROFF_ARGS)
2927: {
2928: const char *p;
2929:
1.238 schwarze 2930: p = buf->buf + pos;
1.174 kristaps 2931:
1.238 schwarze 2932: if (*p == '\0' || (r->control = *p++) == '.')
1.174 kristaps 2933: r->control = 0;
2934:
1.238 schwarze 2935: if (*p != '\0')
1.260 schwarze 2936: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
2937: ln, p - buf->buf, "cc ... %s", p);
1.174 kristaps 2938:
1.277 schwarze 2939: return ROFF_IGN;
1.174 kristaps 2940: }
2941:
2942: static enum rofferr
1.164 kristaps 2943: roff_tr(ROFF_ARGS)
2944: {
2945: const char *p, *first, *second;
2946: size_t fsz, ssz;
2947: enum mandoc_esc esc;
2948:
1.238 schwarze 2949: p = buf->buf + pos;
1.164 kristaps 2950:
1.238 schwarze 2951: if (*p == '\0') {
1.260 schwarze 2952: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.277 schwarze 2953: return ROFF_IGN;
1.164 kristaps 2954: }
2955:
1.238 schwarze 2956: while (*p != '\0') {
1.164 kristaps 2957: fsz = ssz = 1;
2958:
2959: first = p++;
1.238 schwarze 2960: if (*first == '\\') {
1.164 kristaps 2961: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 2962: if (esc == ESCAPE_ERROR) {
1.219 schwarze 2963: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 2964: ln, (int)(p - buf->buf), first);
1.277 schwarze 2965: return ROFF_IGN;
1.164 kristaps 2966: }
2967: fsz = (size_t)(p - first);
2968: }
2969:
2970: second = p++;
1.238 schwarze 2971: if (*second == '\\') {
1.164 kristaps 2972: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 2973: if (esc == ESCAPE_ERROR) {
1.219 schwarze 2974: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 2975: ln, (int)(p - buf->buf), second);
1.277 schwarze 2976: return ROFF_IGN;
1.164 kristaps 2977: }
2978: ssz = (size_t)(p - second);
1.238 schwarze 2979: } else if (*second == '\0') {
1.260 schwarze 2980: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
2981: ln, first - buf->buf, "tr %s", first);
1.164 kristaps 2982: second = " ";
1.165 kristaps 2983: p--;
1.164 kristaps 2984: }
2985:
1.167 kristaps 2986: if (fsz > 1) {
1.207 schwarze 2987: roff_setstrn(&r->xmbtab, first, fsz,
2988: second, ssz, 0);
1.167 kristaps 2989: continue;
2990: }
2991:
1.238 schwarze 2992: if (r->xtab == NULL)
1.207 schwarze 2993: r->xtab = mandoc_calloc(128,
2994: sizeof(struct roffstr));
1.167 kristaps 2995:
2996: free(r->xtab[(int)*first].p);
2997: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
2998: r->xtab[(int)*first].sz = ssz;
1.164 kristaps 2999: }
3000:
1.277 schwarze 3001: return ROFF_IGN;
1.164 kristaps 3002: }
3003:
3004: static enum rofferr
1.105 kristaps 3005: roff_so(ROFF_ARGS)
3006: {
1.249 schwarze 3007: char *name, *cp;
1.105 kristaps 3008:
1.238 schwarze 3009: name = buf->buf + pos;
1.224 schwarze 3010: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.105 kristaps 3011:
3012: /*
3013: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3014: * opening anything that's not in our cwd or anything beneath
3015: * it. Thus, explicitly disallow traversing up the file-system
3016: * or using absolute paths.
3017: */
3018:
1.238 schwarze 3019: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.210 schwarze 3020: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
3021: ".so %s", name);
1.249 schwarze 3022: buf->sz = mandoc_asprintf(&cp,
3023: ".sp\nSee the file %s.\n.sp", name) + 1;
3024: free(buf->buf);
3025: buf->buf = cp;
3026: *offs = 0;
1.277 schwarze 3027: return ROFF_REPARSE;
1.105 kristaps 3028: }
3029:
3030: *offs = pos;
1.277 schwarze 3031: return ROFF_SO;
1.105 kristaps 3032: }
1.92 schwarze 3033:
1.266 schwarze 3034: /* --- user defined strings and macros ------------------------------------ */
3035:
1.106 kristaps 3036: static enum rofferr
3037: roff_userdef(ROFF_ARGS)
1.99 kristaps 3038: {
1.263 schwarze 3039: const char *arg[9], *ap;
1.106 kristaps 3040: char *cp, *n1, *n2;
1.274 schwarze 3041: int i, ib, ie;
1.263 schwarze 3042: size_t asz, rsz;
1.106 kristaps 3043:
3044: /*
3045: * Collect pointers to macro argument strings
1.188 schwarze 3046: * and NUL-terminate them.
1.106 kristaps 3047: */
1.263 schwarze 3048:
1.273 schwarze 3049: r->argc = 0;
1.238 schwarze 3050: cp = buf->buf + pos;
1.273 schwarze 3051: for (i = 0; i < 9; i++) {
3052: if (*cp == '\0')
3053: arg[i] = "";
3054: else {
3055: arg[i] = mandoc_getarg(r->parse, &cp, ln, &pos);
3056: r->argc = i + 1;
3057: }
3058: }
1.99 kristaps 3059:
1.106 kristaps 3060: /*
3061: * Expand macro arguments.
1.99 kristaps 3062: */
1.263 schwarze 3063:
3064: buf->sz = strlen(r->current_string) + 1;
3065: n1 = cp = mandoc_malloc(buf->sz);
3066: memcpy(n1, r->current_string, buf->sz);
3067: while (*cp != '\0') {
3068:
3069: /* Scan ahead for the next argument invocation. */
3070:
3071: if (*cp++ != '\\')
3072: continue;
3073: if (*cp++ != '$')
3074: continue;
1.274 schwarze 3075: if (*cp == '*') { /* \\$* inserts all arguments */
3076: ib = 0;
3077: ie = r->argc - 1;
3078: } else { /* \\$1 .. \\$9 insert one argument */
3079: ib = ie = *cp - '1';
3080: if (ib < 0 || ib > 8)
3081: continue;
3082: }
1.263 schwarze 3083: cp -= 2;
3084:
3085: /*
3086: * Determine the size of the expanded argument,
3087: * taking escaping of quotes into account.
3088: */
3089:
1.274 schwarze 3090: asz = ie > ib ? ie - ib : 0; /* for blanks */
3091: for (i = ib; i <= ie; i++) {
3092: for (ap = arg[i]; *ap != '\0'; ap++) {
3093: asz++;
3094: if (*ap == '"')
3095: asz += 3;
3096: }
1.263 schwarze 3097: }
3098: if (asz != 3) {
3099:
3100: /*
3101: * Determine the size of the rest of the
3102: * unexpanded macro, including the NUL.
3103: */
3104:
3105: rsz = buf->sz - (cp - n1) - 3;
3106:
3107: /*
3108: * When shrinking, move before
3109: * releasing the storage.
3110: */
3111:
3112: if (asz < 3)
3113: memmove(cp + asz, cp + 3, rsz);
3114:
3115: /*
3116: * Resize the storage for the macro
3117: * and readjust the parse pointer.
3118: */
3119:
3120: buf->sz += asz - 3;
3121: n2 = mandoc_realloc(n1, buf->sz);
3122: cp = n2 + (cp - n1);
3123: n1 = n2;
3124:
3125: /*
3126: * When growing, make room
3127: * for the expanded argument.
3128: */
3129:
3130: if (asz > 3)
3131: memmove(cp + asz, cp + 3, rsz);
3132: }
3133:
3134: /* Copy the expanded argument, escaping quotes. */
3135:
3136: n2 = cp;
1.274 schwarze 3137: for (i = ib; i <= ie; i++) {
3138: for (ap = arg[i]; *ap != '\0'; ap++) {
3139: if (*ap == '"') {
3140: memcpy(n2, "\\(dq", 4);
3141: n2 += 4;
3142: } else
3143: *n2++ = *ap;
3144: }
3145: if (i < ie)
3146: *n2++ = ' ';
1.106 kristaps 3147: }
1.99 kristaps 3148: }
3149:
1.106 kristaps 3150: /*
3151: * Replace the macro invocation
3152: * by the expanded macro.
3153: */
1.263 schwarze 3154:
1.238 schwarze 3155: free(buf->buf);
3156: buf->buf = n1;
1.248 schwarze 3157: *offs = 0;
1.106 kristaps 3158:
1.277 schwarze 3159: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
3160: ROFF_REPARSE : ROFF_APPEND;
1.99 kristaps 3161: }
1.121 schwarze 3162:
1.212 schwarze 3163: static size_t
1.121 schwarze 3164: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3165: {
3166: char *name, *cp;
1.212 schwarze 3167: size_t namesz;
1.121 schwarze 3168:
3169: name = *cpp;
3170: if ('\0' == *name)
1.277 schwarze 3171: return 0;
1.121 schwarze 3172:
1.212 schwarze 3173: /* Read until end of name and terminate it with NUL. */
3174: for (cp = name; 1; cp++) {
3175: if ('\0' == *cp || ' ' == *cp) {
3176: namesz = cp - name;
3177: break;
3178: }
1.121 schwarze 3179: if ('\\' != *cp)
3180: continue;
1.215 schwarze 3181: namesz = cp - name;
3182: if ('{' == cp[1] || '}' == cp[1])
3183: break;
1.121 schwarze 3184: cp++;
3185: if ('\\' == *cp)
3186: continue;
1.224 schwarze 3187: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3188: "%.*s", (int)(cp - name + 1), name);
1.212 schwarze 3189: mandoc_escape((const char **)&cp, NULL, NULL);
3190: break;
1.121 schwarze 3191: }
3192:
3193: /* Read past spaces. */
3194: while (' ' == *cp)
3195: cp++;
3196:
3197: *cpp = cp;
1.277 schwarze 3198: return namesz;
1.121 schwarze 3199: }
3200:
1.106 kristaps 3201: /*
3202: * Store *string into the user-defined string called *name.
3203: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.193 schwarze 3204: * append == 0: replace mode
3205: * append == 1: single-line append mode
3206: * append == 2: multiline append mode, append '\n' after each call
1.106 kristaps 3207: */
1.94 kristaps 3208: static void
1.106 kristaps 3209: roff_setstr(struct roff *r, const char *name, const char *string,
1.193 schwarze 3210: int append)
1.92 schwarze 3211: {
1.164 kristaps 3212:
3213: roff_setstrn(&r->strtab, name, strlen(name), string,
1.207 schwarze 3214: string ? strlen(string) : 0, append);
1.164 kristaps 3215: }
3216:
3217: static void
1.166 kristaps 3218: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.193 schwarze 3219: const char *string, size_t stringsz, int append)
1.164 kristaps 3220: {
1.166 kristaps 3221: struct roffkv *n;
1.164 kristaps 3222: char *c;
3223: int i;
3224: size_t oldch, newch;
1.92 schwarze 3225:
1.106 kristaps 3226: /* Search for an existing string with the same name. */
1.164 kristaps 3227: n = *r;
3228:
1.211 schwarze 3229: while (n && (namesz != n->key.sz ||
3230: strncmp(n->key.p, name, namesz)))
1.92 schwarze 3231: n = n->next;
1.94 kristaps 3232:
3233: if (NULL == n) {
1.106 kristaps 3234: /* Create a new string table entry. */
1.166 kristaps 3235: n = mandoc_malloc(sizeof(struct roffkv));
3236: n->key.p = mandoc_strndup(name, namesz);
3237: n->key.sz = namesz;
3238: n->val.p = NULL;
3239: n->val.sz = 0;
1.164 kristaps 3240: n->next = *r;
3241: *r = n;
1.193 schwarze 3242: } else if (0 == append) {
1.166 kristaps 3243: free(n->val.p);
3244: n->val.p = NULL;
3245: n->val.sz = 0;
1.106 kristaps 3246: }
3247:
3248: if (NULL == string)
3249: return;
3250:
3251: /*
3252: * One additional byte for the '\n' in multiline mode,
3253: * and one for the terminating '\0'.
3254: */
1.193 schwarze 3255: newch = stringsz + (1 < append ? 2u : 1u);
1.164 kristaps 3256:
1.166 kristaps 3257: if (NULL == n->val.p) {
3258: n->val.p = mandoc_malloc(newch);
3259: *n->val.p = '\0';
1.106 kristaps 3260: oldch = 0;
3261: } else {
1.166 kristaps 3262: oldch = n->val.sz;
3263: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.106 kristaps 3264: }
3265:
3266: /* Skip existing content in the destination buffer. */
1.166 kristaps 3267: c = n->val.p + (int)oldch;
1.106 kristaps 3268:
3269: /* Append new content to the destination buffer. */
1.164 kristaps 3270: i = 0;
3271: while (i < (int)stringsz) {
1.106 kristaps 3272: /*
3273: * Rudimentary roff copy mode:
3274: * Handle escaped backslashes.
3275: */
1.164 kristaps 3276: if ('\\' == string[i] && '\\' == string[i + 1])
3277: i++;
3278: *c++ = string[i++];
1.106 kristaps 3279: }
1.94 kristaps 3280:
1.106 kristaps 3281: /* Append terminating bytes. */
1.193 schwarze 3282: if (1 < append)
1.106 kristaps 3283: *c++ = '\n';
1.163 kristaps 3284:
1.106 kristaps 3285: *c = '\0';
1.166 kristaps 3286: n->val.sz = (int)(c - n->val.p);
1.92 schwarze 3287: }
3288:
1.94 kristaps 3289: static const char *
3290: roff_getstrn(const struct roff *r, const char *name, size_t len)
1.92 schwarze 3291: {
1.166 kristaps 3292: const struct roffkv *n;
1.191 schwarze 3293: int i;
1.92 schwarze 3294:
1.164 kristaps 3295: for (n = r->strtab; n; n = n->next)
1.207 schwarze 3296: if (0 == strncmp(name, n->key.p, len) &&
3297: '\0' == n->key.p[(int)len])
1.277 schwarze 3298: return n->val.p;
1.191 schwarze 3299:
3300: for (i = 0; i < PREDEFS_MAX; i++)
3301: if (0 == strncmp(name, predefs[i].name, len) &&
3302: '\0' == predefs[i].name[(int)len])
1.277 schwarze 3303: return predefs[i].str;
1.94 kristaps 3304:
1.277 schwarze 3305: return NULL;
1.92 schwarze 3306: }
3307:
1.94 kristaps 3308: static void
1.167 kristaps 3309: roff_freestr(struct roffkv *r)
1.92 schwarze 3310: {
1.166 kristaps 3311: struct roffkv *n, *nn;
1.92 schwarze 3312:
1.167 kristaps 3313: for (n = r; n; n = nn) {
1.166 kristaps 3314: free(n->key.p);
3315: free(n->val.p);
1.92 schwarze 3316: nn = n->next;
3317: free(n);
3318: }
1.114 kristaps 3319: }
1.266 schwarze 3320:
3321: /* --- accessors and utility functions ------------------------------------ */
1.114 kristaps 3322:
3323: const struct tbl_span *
3324: roff_span(const struct roff *r)
3325: {
1.207 schwarze 3326:
1.277 schwarze 3327: return r->tbl ? tbl_span(r->tbl) : NULL;
1.125 kristaps 3328: }
3329:
3330: const struct eqn *
3331: roff_eqn(const struct roff *r)
3332: {
1.207 schwarze 3333:
1.277 schwarze 3334: return r->last_eqn ? &r->last_eqn->eqn : NULL;
1.164 kristaps 3335: }
3336:
3337: /*
3338: * Duplicate an input string, making the appropriate character
3339: * conversations (as stipulated by `tr') along the way.
3340: * Returns a heap-allocated string with all the replacements made.
3341: */
3342: char *
3343: roff_strdup(const struct roff *r, const char *p)
3344: {
1.166 kristaps 3345: const struct roffkv *cp;
1.164 kristaps 3346: char *res;
3347: const char *pp;
3348: size_t ssz, sz;
3349: enum mandoc_esc esc;
3350:
1.167 kristaps 3351: if (NULL == r->xmbtab && NULL == r->xtab)
1.277 schwarze 3352: return mandoc_strdup(p);
1.164 kristaps 3353: else if ('\0' == *p)
1.277 schwarze 3354: return mandoc_strdup("");
1.164 kristaps 3355:
3356: /*
3357: * Step through each character looking for term matches
3358: * (remember that a `tr' can be invoked with an escape, which is
3359: * a glyph but the escape is multi-character).
3360: * We only do this if the character hash has been initialised
3361: * and the string is >0 length.
3362: */
3363:
3364: res = NULL;
3365: ssz = 0;
3366:
3367: while ('\0' != *p) {
1.289 schwarze 3368: assert((unsigned int)*p < 128);
3369: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.167 kristaps 3370: sz = r->xtab[(int)*p].sz;
3371: res = mandoc_realloc(res, ssz + sz + 1);
3372: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3373: ssz += sz;
3374: p++;
3375: continue;
3376: } else if ('\\' != *p) {
3377: res = mandoc_realloc(res, ssz + 2);
3378: res[ssz++] = *p++;
3379: continue;
3380: }
3381:
1.164 kristaps 3382: /* Search for term matches. */
1.167 kristaps 3383: for (cp = r->xmbtab; cp; cp = cp->next)
1.166 kristaps 3384: if (0 == strncmp(p, cp->key.p, cp->key.sz))
1.164 kristaps 3385: break;
3386:
3387: if (NULL != cp) {
3388: /*
3389: * A match has been found.
3390: * Append the match to the array and move
3391: * forward by its keysize.
3392: */
1.207 schwarze 3393: res = mandoc_realloc(res,
3394: ssz + cp->val.sz + 1);
1.166 kristaps 3395: memcpy(res + ssz, cp->val.p, cp->val.sz);
3396: ssz += cp->val.sz;
3397: p += (int)cp->key.sz;
1.164 kristaps 3398: continue;
3399: }
3400:
1.167 kristaps 3401: /*
3402: * Handle escapes carefully: we need to copy
3403: * over just the escape itself, or else we might
3404: * do replacements within the escape itself.
3405: * Make sure to pass along the bogus string.
3406: */
3407: pp = p++;
3408: esc = mandoc_escape(&p, NULL, NULL);
3409: if (ESCAPE_ERROR == esc) {
3410: sz = strlen(pp);
1.164 kristaps 3411: res = mandoc_realloc(res, ssz + sz + 1);
3412: memcpy(res + ssz, pp, sz);
1.167 kristaps 3413: break;
1.164 kristaps 3414: }
1.207 schwarze 3415: /*
3416: * We bail out on bad escapes.
1.167 kristaps 3417: * No need to warn: we already did so when
3418: * roff_res() was called.
3419: */
3420: sz = (int)(p - pp);
3421: res = mandoc_realloc(res, ssz + sz + 1);
3422: memcpy(res + ssz, pp, sz);
3423: ssz += sz;
1.164 kristaps 3424: }
3425:
3426: res[(int)ssz] = '\0';
1.277 schwarze 3427: return res;
1.227 schwarze 3428: }
3429:
3430: int
3431: roff_getformat(const struct roff *r)
3432: {
3433:
1.277 schwarze 3434: return r->format;
1.174 kristaps 3435: }
3436:
3437: /*
1.207 schwarze 3438: * Find out whether a line is a macro line or not.
1.174 kristaps 3439: * If it is, adjust the current position and return one; if it isn't,
3440: * return zero and don't change the current position.
3441: * If the control character has been set with `.cc', then let that grain
3442: * precedence.
3443: * This is slighly contrary to groff, where using the non-breaking
3444: * control character when `cc' has been invoked will cause the
3445: * non-breaking macro contents to be printed verbatim.
3446: */
3447: int
3448: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
3449: {
3450: int pos;
3451:
3452: pos = *ppos;
3453:
3454: if (0 != r->control && cp[pos] == r->control)
3455: pos++;
3456: else if (0 != r->control)
1.277 schwarze 3457: return 0;
1.174 kristaps 3458: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
3459: pos += 2;
3460: else if ('.' == cp[pos] || '\'' == cp[pos])
3461: pos++;
3462: else
1.277 schwarze 3463: return 0;
1.174 kristaps 3464:
3465: while (' ' == cp[pos] || '\t' == cp[pos])
3466: pos++;
3467:
3468: *ppos = pos;
1.277 schwarze 3469: return 1;
1.74 kristaps 3470: }
CVSweb