Annotation of src/usr.bin/mandoc/roff.c, Revision 1.137
1.137 ! schwarze 1: /* $OpenBSD: roff.c,v 1.136 2015/04/04 13:52:59 schwarze Exp $ */
1.1 schwarze 2: /*
1.137 ! schwarze 3: * Copyright (c) 2009-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.119 schwarze 4: * Copyright (c) 2010-2015 Ingo Schwarze <schwarze@openbsd.org>
1.1 schwarze 5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
1.16 schwarze 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.1 schwarze 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.16 schwarze 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.1 schwarze 13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
1.99 schwarze 18: #include <sys/types.h>
19:
1.1 schwarze 20: #include <assert.h>
1.3 schwarze 21: #include <ctype.h>
1.117 schwarze 22: #include <limits.h>
1.51 schwarze 23: #include <stdio.h>
1.1 schwarze 24: #include <stdlib.h>
25: #include <string.h>
26:
27: #include "mandoc.h"
1.74 schwarze 28: #include "mandoc_aux.h"
1.137 ! schwarze 29: #include "roff.h"
1.98 daniel 30: #include "libmandoc.h"
1.27 schwarze 31: #include "libroff.h"
1.1 schwarze 32:
1.37 schwarze 33: /* Maximum number of nested if-else conditionals. */
1.2 schwarze 34: #define RSTACK_MAX 128
35:
1.43 schwarze 36: /* Maximum number of string expansions per line, to break infinite loops. */
37: #define EXPAND_LIMIT 1000
38:
1.1 schwarze 39: enum rofft {
1.123 schwarze 40: ROFF_ab,
1.20 schwarze 41: ROFF_ad,
1.123 schwarze 42: ROFF_af,
43: ROFF_aln,
44: ROFF_als,
1.2 schwarze 45: ROFF_am,
1.123 schwarze 46: ROFF_am1,
1.2 schwarze 47: ROFF_ami,
1.123 schwarze 48: ROFF_ami1,
1.66 schwarze 49: ROFF_as,
1.123 schwarze 50: ROFF_as1,
51: ROFF_asciify,
52: ROFF_backtrace,
53: ROFF_bd,
54: ROFF_bleedat,
55: ROFF_blm,
56: ROFF_box,
57: ROFF_boxa,
58: ROFF_bp,
59: ROFF_BP,
60: /* MAN_br, MDOC_br */
61: ROFF_break,
62: ROFF_breakchar,
63: ROFF_brnl,
64: ROFF_brp,
65: ROFF_brpnl,
66: ROFF_c2,
1.48 schwarze 67: ROFF_cc,
1.67 schwarze 68: ROFF_ce,
1.123 schwarze 69: ROFF_cf,
70: ROFF_cflags,
71: ROFF_ch,
72: ROFF_char,
73: ROFF_chop,
74: ROFF_class,
75: ROFF_close,
76: ROFF_CL,
77: ROFF_color,
78: ROFF_composite,
79: ROFF_continue,
80: ROFF_cp,
81: ROFF_cropat,
82: ROFF_cs,
83: ROFF_cu,
84: ROFF_da,
85: ROFF_dch,
86: ROFF_Dd,
1.1 schwarze 87: ROFF_de,
1.123 schwarze 88: ROFF_de1,
89: ROFF_defcolor,
1.1 schwarze 90: ROFF_dei,
1.123 schwarze 91: ROFF_dei1,
92: ROFF_device,
93: ROFF_devicem,
94: ROFF_di,
95: ROFF_do,
1.2 schwarze 96: ROFF_ds,
1.123 schwarze 97: ROFF_ds1,
98: ROFF_dwh,
99: ROFF_dt,
100: ROFF_ec,
101: ROFF_ecr,
102: ROFF_ecs,
1.2 schwarze 103: ROFF_el,
1.123 schwarze 104: ROFF_em,
105: ROFF_EN,
106: ROFF_eo,
107: ROFF_EP,
108: ROFF_EQ,
109: ROFF_errprint,
110: ROFF_ev,
111: ROFF_evc,
112: ROFF_ex,
113: ROFF_fallback,
1.58 schwarze 114: ROFF_fam,
1.123 schwarze 115: ROFF_fc,
116: ROFF_fchar,
117: ROFF_fcolor,
118: ROFF_fdeferlig,
119: ROFF_feature,
120: /* MAN_fi; ignored in mdoc(7) */
121: ROFF_fkern,
122: ROFF_fl,
123: ROFF_flig,
124: ROFF_fp,
125: ROFF_fps,
126: ROFF_fschar,
127: ROFF_fspacewidth,
128: ROFF_fspecial,
129: /* MAN_ft; ignored in mdoc(7) */
130: ROFF_ftr,
131: ROFF_fzoom,
132: ROFF_gcolor,
133: ROFF_hc,
134: ROFF_hcode,
135: ROFF_hidechar,
136: ROFF_hla,
137: ROFF_hlm,
138: ROFF_hpf,
139: ROFF_hpfa,
140: ROFF_hpfcode,
1.59 schwarze 141: ROFF_hw,
1.20 schwarze 142: ROFF_hy,
1.123 schwarze 143: ROFF_hylang,
144: ROFF_hylen,
145: ROFF_hym,
146: ROFF_hypp,
147: ROFF_hys,
1.2 schwarze 148: ROFF_ie,
149: ROFF_if,
1.1 schwarze 150: ROFF_ig,
1.123 schwarze 151: /* MAN_in; ignored in mdoc(7) */
152: ROFF_index,
1.30 schwarze 153: ROFF_it,
1.123 schwarze 154: ROFF_itc,
155: ROFF_IX,
156: ROFF_kern,
157: ROFF_kernafter,
158: ROFF_kernbefore,
159: ROFF_kernpair,
160: ROFF_lc,
161: ROFF_lc_ctype,
162: ROFF_lds,
163: ROFF_length,
164: ROFF_letadj,
165: ROFF_lf,
166: ROFF_lg,
167: ROFF_lhang,
168: ROFF_linetabs,
169: /* MAN_ll, MDOC_ll */
170: ROFF_lnr,
171: ROFF_lnrf,
172: ROFF_lpfx,
173: ROFF_ls,
174: ROFF_lsm,
175: ROFF_lt,
176: ROFF_mc,
177: ROFF_mediasize,
178: ROFF_minss,
179: ROFF_mk,
180: ROFF_mso,
1.128 schwarze 181: ROFF_na,
1.20 schwarze 182: ROFF_ne,
1.123 schwarze 183: /* MAN_nf; ignored in mdoc(7) */
1.20 schwarze 184: ROFF_nh,
1.123 schwarze 185: ROFF_nhychar,
186: ROFF_nm,
187: ROFF_nn,
188: ROFF_nop,
1.14 schwarze 189: ROFF_nr,
1.123 schwarze 190: ROFF_nrf,
191: ROFF_nroff,
1.31 schwarze 192: ROFF_ns,
1.123 schwarze 193: ROFF_nx,
194: ROFF_open,
195: ROFF_opena,
196: ROFF_os,
197: ROFF_output,
198: ROFF_padj,
199: ROFF_papersize,
200: ROFF_pc,
201: ROFF_pev,
202: ROFF_pi,
203: ROFF_PI,
1.101 schwarze 204: ROFF_pl,
1.123 schwarze 205: ROFF_pm,
206: ROFF_pn,
207: ROFF_pnr,
208: ROFF_po,
1.31 schwarze 209: ROFF_ps,
1.123 schwarze 210: ROFF_psbb,
211: ROFF_pshape,
212: ROFF_pso,
213: ROFF_ptr,
214: ROFF_pvs,
215: ROFF_rchar,
216: ROFF_rd,
217: ROFF_recursionlimit,
218: ROFF_return,
219: ROFF_rfschar,
220: ROFF_rhang,
221: ROFF_rj,
1.2 schwarze 222: ROFF_rm,
1.123 schwarze 223: ROFF_rn,
224: ROFF_rnn,
1.76 schwarze 225: ROFF_rr,
1.123 schwarze 226: ROFF_rs,
227: ROFF_rt,
228: ROFF_schar,
229: ROFF_sentchar,
230: ROFF_shc,
231: ROFF_shift,
232: ROFF_sizes,
1.14 schwarze 233: ROFF_so,
1.123 schwarze 234: /* MAN_sp, MDOC_sp */
235: ROFF_spacewidth,
236: ROFF_special,
237: ROFF_spreadwarn,
238: ROFF_ss,
239: ROFF_sty,
240: ROFF_substring,
241: ROFF_sv,
242: ROFF_sy,
243: ROFF_T_,
1.31 schwarze 244: ROFF_ta,
1.123 schwarze 245: ROFF_tc,
246: ROFF_TE,
247: ROFF_TH,
248: ROFF_ti,
249: ROFF_tkf,
250: ROFF_tl,
251: ROFF_tm,
252: ROFF_tm1,
253: ROFF_tmc,
1.2 schwarze 254: ROFF_tr,
1.123 schwarze 255: ROFF_track,
256: ROFF_transchar,
257: ROFF_trf,
258: ROFF_trimat,
259: ROFF_trin,
260: ROFF_trnt,
261: ROFF_troff,
1.27 schwarze 262: ROFF_TS,
1.123 schwarze 263: ROFF_uf,
264: ROFF_ul,
265: ROFF_unformat,
266: ROFF_unwatch,
267: ROFF_unwatchn,
268: ROFF_vpt,
269: ROFF_vs,
270: ROFF_warn,
271: ROFF_warnscale,
272: ROFF_watch,
273: ROFF_watchlength,
274: ROFF_watchn,
275: ROFF_wh,
276: ROFF_while,
277: ROFF_write,
278: ROFF_writec,
279: ROFF_writem,
280: ROFF_xflag,
1.2 schwarze 281: ROFF_cblock,
1.16 schwarze 282: ROFF_USERDEF,
1.1 schwarze 283: ROFF_MAX
284: };
285:
1.41 schwarze 286: /*
1.42 schwarze 287: * An incredibly-simple string buffer.
288: */
1.8 schwarze 289: struct roffstr {
1.42 schwarze 290: char *p; /* nil-terminated buffer */
291: size_t sz; /* saved strlen(p) */
292: };
293:
294: /*
295: * A key-value roffstr pair as part of a singly-linked list.
296: */
297: struct roffkv {
298: struct roffstr key;
299: struct roffstr val;
300: struct roffkv *next; /* next in list */
1.8 schwarze 301: };
302:
1.52 schwarze 303: /*
304: * A single number register as part of a singly-linked list.
305: */
306: struct roffreg {
307: struct roffstr key;
1.53 schwarze 308: int val;
1.52 schwarze 309: struct roffreg *next;
310: };
311:
1.1 schwarze 312: struct roff {
1.35 schwarze 313: struct mparse *parse; /* parse point */
1.109 schwarze 314: const struct mchars *mchars; /* character table */
1.1 schwarze 315: struct roffnode *last; /* leaf of stack */
1.96 schwarze 316: int *rstack; /* stack of inverted `ie' values */
1.52 schwarze 317: struct roffreg *regtab; /* number registers */
1.42 schwarze 318: struct roffkv *strtab; /* user-defined strings & macros */
319: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
320: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.16 schwarze 321: const char *current_string; /* value of last called user macro */
1.27 schwarze 322: struct tbl_node *first_tbl; /* first table parsed */
323: struct tbl_node *last_tbl; /* last table parsed */
324: struct tbl_node *tbl; /* current table being parsed */
1.32 schwarze 325: struct eqn_node *last_eqn; /* last equation parsed */
326: struct eqn_node *first_eqn; /* first equation parsed */
327: struct eqn_node *eqn; /* current equation being parsed */
1.102 schwarze 328: int eqn_inline; /* current equation is inline */
1.96 schwarze 329: int options; /* parse options */
330: int rstacksz; /* current size limit of rstack */
331: int rstackpos; /* position in rstack */
1.99 schwarze 332: int format; /* current file in mdoc or man format */
1.96 schwarze 333: char control; /* control character */
1.1 schwarze 334: };
335:
336: struct roffnode {
337: enum rofft tok; /* type of node */
338: struct roffnode *parent; /* up one in stack */
339: int line; /* parse line */
340: int col; /* parse col */
1.16 schwarze 341: char *name; /* node name, e.g. macro name */
1.2 schwarze 342: char *end; /* end-rules: custom token */
343: int endspan; /* end-rules: next-line or infty */
1.71 schwarze 344: int rule; /* current evaluation rule */
1.1 schwarze 345: };
346:
347: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
348: enum rofft tok, /* tok of macro */ \
1.110 schwarze 349: struct buf *buf, /* input buffer */ \
1.1 schwarze 350: int ln, /* parse line */ \
1.2 schwarze 351: int ppos, /* original pos in buffer */ \
352: int pos, /* current pos in buffer */ \
353: int *offs /* reset offset of buffer data */
1.1 schwarze 354:
355: typedef enum rofferr (*roffproc)(ROFF_ARGS);
356:
357: struct roffmac {
358: const char *name; /* macro name */
1.2 schwarze 359: roffproc proc; /* process new macro */
360: roffproc text; /* process as child text of macro */
361: roffproc sub; /* process as child of macro */
362: int flags;
363: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.3 schwarze 364: struct roffmac *next;
1.1 schwarze 365: };
366:
1.37 schwarze 367: struct predef {
368: const char *name; /* predefined input name */
369: const char *str; /* replacement symbol */
370: };
371:
372: #define PREDEF(__name, __str) \
373: { (__name), (__str) },
374:
1.42 schwarze 375: static enum rofft roffhash_find(const char *, size_t);
376: static void roffhash_init(void);
377: static void roffnode_cleanscope(struct roff *);
378: static void roffnode_pop(struct roff *);
379: static void roffnode_push(struct roff *, enum rofft,
380: const char *, int, int);
1.2 schwarze 381: static enum rofferr roff_block(ROFF_ARGS);
382: static enum rofferr roff_block_text(ROFF_ARGS);
383: static enum rofferr roff_block_sub(ROFF_ARGS);
1.123 schwarze 384: static enum rofferr roff_brp(ROFF_ARGS);
1.2 schwarze 385: static enum rofferr roff_cblock(ROFF_ARGS);
1.48 schwarze 386: static enum rofferr roff_cc(ROFF_ARGS);
1.68 schwarze 387: static void roff_ccond(struct roff *, int, int);
1.2 schwarze 388: static enum rofferr roff_cond(ROFF_ARGS);
389: static enum rofferr roff_cond_text(ROFF_ARGS);
390: static enum rofferr roff_cond_sub(ROFF_ARGS);
1.7 schwarze 391: static enum rofferr roff_ds(ROFF_ARGS);
1.110 schwarze 392: static enum rofferr roff_eqndelim(struct roff *, struct buf *, int);
1.106 schwarze 393: static int roff_evalcond(struct roff *r, int,
394: const char *, int *);
395: static int roff_evalnum(struct roff *, int,
396: const char *, int *, int *, int);
397: static int roff_evalpar(struct roff *, int,
1.133 schwarze 398: const char *, int *, int *, int);
1.71 schwarze 399: static int roff_evalstrcond(const char *, int *);
1.42 schwarze 400: static void roff_free1(struct roff *);
1.52 schwarze 401: static void roff_freereg(struct roffreg *);
1.42 schwarze 402: static void roff_freestr(struct roffkv *);
1.85 schwarze 403: static size_t roff_getname(struct roff *, char **, int, int);
1.133 schwarze 404: static int roff_getnum(const char *, int *, int *, int);
1.56 schwarze 405: static int roff_getop(const char *, int *, char *);
1.53 schwarze 406: static int roff_getregn(const struct roff *,
407: const char *, size_t);
1.65 schwarze 408: static int roff_getregro(const char *name);
1.80 schwarze 409: static const char *roff_getstrn(const struct roff *,
1.8 schwarze 410: const char *, size_t);
1.123 schwarze 411: static enum rofferr roff_insec(ROFF_ARGS);
1.51 schwarze 412: static enum rofferr roff_it(ROFF_ARGS);
1.21 schwarze 413: static enum rofferr roff_line_ignore(ROFF_ARGS);
1.137 ! schwarze 414: static void roff_man_alloc1(struct roff_man *);
! 415: static void roff_man_free1(struct roff_man *);
1.6 schwarze 416: static enum rofferr roff_nr(ROFF_ARGS);
1.87 schwarze 417: static enum rofft roff_parse(struct roff *, char *, int *,
418: int, int);
1.110 schwarze 419: static enum rofferr roff_parsetext(struct buf *, int, int *);
420: static enum rofferr roff_res(struct roff *, struct buf *, int, int);
1.29 schwarze 421: static enum rofferr roff_rm(ROFF_ARGS);
1.76 schwarze 422: static enum rofferr roff_rr(ROFF_ARGS);
1.8 schwarze 423: static void roff_setstr(struct roff *,
1.16 schwarze 424: const char *, const char *, int);
1.80 schwarze 425: static void roff_setstrn(struct roffkv **, const char *,
1.42 schwarze 426: size_t, const char *, size_t, int);
1.14 schwarze 427: static enum rofferr roff_so(ROFF_ARGS);
1.42 schwarze 428: static enum rofferr roff_tr(ROFF_ARGS);
1.47 schwarze 429: static enum rofferr roff_Dd(ROFF_ARGS);
430: static enum rofferr roff_TH(ROFF_ARGS);
1.27 schwarze 431: static enum rofferr roff_TE(ROFF_ARGS);
432: static enum rofferr roff_TS(ROFF_ARGS);
1.32 schwarze 433: static enum rofferr roff_EQ(ROFF_ARGS);
434: static enum rofferr roff_EN(ROFF_ARGS);
1.27 schwarze 435: static enum rofferr roff_T_(ROFF_ARGS);
1.123 schwarze 436: static enum rofferr roff_unsupp(ROFF_ARGS);
1.16 schwarze 437: static enum rofferr roff_userdef(ROFF_ARGS);
1.1 schwarze 438:
1.42 schwarze 439: /* See roffhash_find() */
1.3 schwarze 440:
441: #define ASCII_HI 126
442: #define ASCII_LO 33
443: #define HASHWIDTH (ASCII_HI - ASCII_LO + 1)
444:
1.133 schwarze 445: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
446: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
447:
1.3 schwarze 448: static struct roffmac *hash[HASHWIDTH];
449:
450: static struct roffmac roffs[ROFF_MAX] = {
1.123 schwarze 451: { "ab", roff_unsupp, NULL, NULL, 0, NULL },
1.21 schwarze 452: { "ad", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 453: { "af", roff_line_ignore, NULL, NULL, 0, NULL },
454: { "aln", roff_unsupp, NULL, NULL, 0, NULL },
455: { "als", roff_unsupp, NULL, NULL, 0, NULL },
1.3 schwarze 456: { "am", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.123 schwarze 457: { "am1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.3 schwarze 458: { "ami", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.123 schwarze 459: { "ami1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.66 schwarze 460: { "as", roff_ds, NULL, NULL, 0, NULL },
1.123 schwarze 461: { "as1", roff_ds, NULL, NULL, 0, NULL },
462: { "asciify", roff_unsupp, NULL, NULL, 0, NULL },
463: { "backtrace", roff_line_ignore, NULL, NULL, 0, NULL },
464: { "bd", roff_line_ignore, NULL, NULL, 0, NULL },
465: { "bleedat", roff_line_ignore, NULL, NULL, 0, NULL },
466: { "blm", roff_unsupp, NULL, NULL, 0, NULL },
467: { "box", roff_unsupp, NULL, NULL, 0, NULL },
468: { "boxa", roff_unsupp, NULL, NULL, 0, NULL },
469: { "bp", roff_line_ignore, NULL, NULL, 0, NULL },
470: { "BP", roff_unsupp, NULL, NULL, 0, NULL },
471: { "break", roff_unsupp, NULL, NULL, 0, NULL },
472: { "breakchar", roff_line_ignore, NULL, NULL, 0, NULL },
473: { "brnl", roff_line_ignore, NULL, NULL, 0, NULL },
474: { "brp", roff_brp, NULL, NULL, 0, NULL },
475: { "brpnl", roff_line_ignore, NULL, NULL, 0, NULL },
476: { "c2", roff_unsupp, NULL, NULL, 0, NULL },
1.48 schwarze 477: { "cc", roff_cc, NULL, NULL, 0, NULL },
1.67 schwarze 478: { "ce", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 479: { "cf", roff_insec, NULL, NULL, 0, NULL },
480: { "cflags", roff_line_ignore, NULL, NULL, 0, NULL },
481: { "ch", roff_line_ignore, NULL, NULL, 0, NULL },
482: { "char", roff_unsupp, NULL, NULL, 0, NULL },
483: { "chop", roff_unsupp, NULL, NULL, 0, NULL },
484: { "class", roff_line_ignore, NULL, NULL, 0, NULL },
485: { "close", roff_insec, NULL, NULL, 0, NULL },
486: { "CL", roff_unsupp, NULL, NULL, 0, NULL },
487: { "color", roff_line_ignore, NULL, NULL, 0, NULL },
488: { "composite", roff_unsupp, NULL, NULL, 0, NULL },
489: { "continue", roff_unsupp, NULL, NULL, 0, NULL },
490: { "cp", roff_line_ignore, NULL, NULL, 0, NULL },
491: { "cropat", roff_line_ignore, NULL, NULL, 0, NULL },
492: { "cs", roff_line_ignore, NULL, NULL, 0, NULL },
493: { "cu", roff_line_ignore, NULL, NULL, 0, NULL },
494: { "da", roff_unsupp, NULL, NULL, 0, NULL },
495: { "dch", roff_unsupp, NULL, NULL, 0, NULL },
496: { "Dd", roff_Dd, NULL, NULL, 0, NULL },
1.3 schwarze 497: { "de", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.123 schwarze 498: { "de1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
499: { "defcolor", roff_line_ignore, NULL, NULL, 0, NULL },
1.3 schwarze 500: { "dei", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.123 schwarze 501: { "dei1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
502: { "device", roff_unsupp, NULL, NULL, 0, NULL },
503: { "devicem", roff_unsupp, NULL, NULL, 0, NULL },
504: { "di", roff_unsupp, NULL, NULL, 0, NULL },
505: { "do", roff_unsupp, NULL, NULL, 0, NULL },
1.7 schwarze 506: { "ds", roff_ds, NULL, NULL, 0, NULL },
1.123 schwarze 507: { "ds1", roff_ds, NULL, NULL, 0, NULL },
508: { "dwh", roff_unsupp, NULL, NULL, 0, NULL },
509: { "dt", roff_unsupp, NULL, NULL, 0, NULL },
510: { "ec", roff_unsupp, NULL, NULL, 0, NULL },
511: { "ecr", roff_unsupp, NULL, NULL, 0, NULL },
512: { "ecs", roff_unsupp, NULL, NULL, 0, NULL },
1.3 schwarze 513: { "el", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
1.123 schwarze 514: { "em", roff_unsupp, NULL, NULL, 0, NULL },
515: { "EN", roff_EN, NULL, NULL, 0, NULL },
516: { "eo", roff_unsupp, NULL, NULL, 0, NULL },
517: { "EP", roff_unsupp, NULL, NULL, 0, NULL },
518: { "EQ", roff_EQ, NULL, NULL, 0, NULL },
519: { "errprint", roff_line_ignore, NULL, NULL, 0, NULL },
520: { "ev", roff_unsupp, NULL, NULL, 0, NULL },
521: { "evc", roff_unsupp, NULL, NULL, 0, NULL },
522: { "ex", roff_unsupp, NULL, NULL, 0, NULL },
523: { "fallback", roff_line_ignore, NULL, NULL, 0, NULL },
1.58 schwarze 524: { "fam", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 525: { "fc", roff_unsupp, NULL, NULL, 0, NULL },
526: { "fchar", roff_unsupp, NULL, NULL, 0, NULL },
527: { "fcolor", roff_line_ignore, NULL, NULL, 0, NULL },
528: { "fdeferlig", roff_line_ignore, NULL, NULL, 0, NULL },
529: { "feature", roff_line_ignore, NULL, NULL, 0, NULL },
530: { "fkern", roff_line_ignore, NULL, NULL, 0, NULL },
531: { "fl", roff_line_ignore, NULL, NULL, 0, NULL },
532: { "flig", roff_line_ignore, NULL, NULL, 0, NULL },
533: { "fp", roff_line_ignore, NULL, NULL, 0, NULL },
534: { "fps", roff_line_ignore, NULL, NULL, 0, NULL },
535: { "fschar", roff_unsupp, NULL, NULL, 0, NULL },
536: { "fspacewidth", roff_line_ignore, NULL, NULL, 0, NULL },
537: { "fspecial", roff_line_ignore, NULL, NULL, 0, NULL },
538: { "ftr", roff_line_ignore, NULL, NULL, 0, NULL },
539: { "fzoom", roff_line_ignore, NULL, NULL, 0, NULL },
540: { "gcolor", roff_line_ignore, NULL, NULL, 0, NULL },
541: { "hc", roff_line_ignore, NULL, NULL, 0, NULL },
542: { "hcode", roff_line_ignore, NULL, NULL, 0, NULL },
543: { "hidechar", roff_line_ignore, NULL, NULL, 0, NULL },
544: { "hla", roff_line_ignore, NULL, NULL, 0, NULL },
545: { "hlm", roff_line_ignore, NULL, NULL, 0, NULL },
546: { "hpf", roff_line_ignore, NULL, NULL, 0, NULL },
547: { "hpfa", roff_line_ignore, NULL, NULL, 0, NULL },
548: { "hpfcode", roff_line_ignore, NULL, NULL, 0, NULL },
1.59 schwarze 549: { "hw", roff_line_ignore, NULL, NULL, 0, NULL },
1.21 schwarze 550: { "hy", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 551: { "hylang", roff_line_ignore, NULL, NULL, 0, NULL },
552: { "hylen", roff_line_ignore, NULL, NULL, 0, NULL },
553: { "hym", roff_line_ignore, NULL, NULL, 0, NULL },
554: { "hypp", roff_line_ignore, NULL, NULL, 0, NULL },
555: { "hys", roff_line_ignore, NULL, NULL, 0, NULL },
1.3 schwarze 556: { "ie", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
557: { "if", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
558: { "ig", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.123 schwarze 559: { "index", roff_unsupp, NULL, NULL, 0, NULL },
1.51 schwarze 560: { "it", roff_it, NULL, NULL, 0, NULL },
1.123 schwarze 561: { "itc", roff_unsupp, NULL, NULL, 0, NULL },
562: { "IX", roff_line_ignore, NULL, NULL, 0, NULL },
563: { "kern", roff_line_ignore, NULL, NULL, 0, NULL },
564: { "kernafter", roff_line_ignore, NULL, NULL, 0, NULL },
565: { "kernbefore", roff_line_ignore, NULL, NULL, 0, NULL },
566: { "kernpair", roff_line_ignore, NULL, NULL, 0, NULL },
567: { "lc", roff_unsupp, NULL, NULL, 0, NULL },
568: { "lc_ctype", roff_unsupp, NULL, NULL, 0, NULL },
569: { "lds", roff_unsupp, NULL, NULL, 0, NULL },
570: { "length", roff_unsupp, NULL, NULL, 0, NULL },
571: { "letadj", roff_line_ignore, NULL, NULL, 0, NULL },
572: { "lf", roff_insec, NULL, NULL, 0, NULL },
573: { "lg", roff_line_ignore, NULL, NULL, 0, NULL },
574: { "lhang", roff_line_ignore, NULL, NULL, 0, NULL },
575: { "linetabs", roff_unsupp, NULL, NULL, 0, NULL },
576: { "lnr", roff_unsupp, NULL, NULL, 0, NULL },
577: { "lnrf", roff_unsupp, NULL, NULL, 0, NULL },
578: { "lpfx", roff_unsupp, NULL, NULL, 0, NULL },
579: { "ls", roff_line_ignore, NULL, NULL, 0, NULL },
580: { "lsm", roff_unsupp, NULL, NULL, 0, NULL },
581: { "lt", roff_line_ignore, NULL, NULL, 0, NULL },
582: { "mc", roff_line_ignore, NULL, NULL, 0, NULL },
583: { "mediasize", roff_line_ignore, NULL, NULL, 0, NULL },
584: { "minss", roff_line_ignore, NULL, NULL, 0, NULL },
585: { "mk", roff_line_ignore, NULL, NULL, 0, NULL },
586: { "mso", roff_insec, NULL, NULL, 0, NULL },
1.128 schwarze 587: { "na", roff_line_ignore, NULL, NULL, 0, NULL },
1.21 schwarze 588: { "ne", roff_line_ignore, NULL, NULL, 0, NULL },
589: { "nh", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 590: { "nhychar", roff_line_ignore, NULL, NULL, 0, NULL },
591: { "nm", roff_unsupp, NULL, NULL, 0, NULL },
592: { "nn", roff_unsupp, NULL, NULL, 0, NULL },
593: { "nop", roff_unsupp, NULL, NULL, 0, NULL },
1.14 schwarze 594: { "nr", roff_nr, NULL, NULL, 0, NULL },
1.123 schwarze 595: { "nrf", roff_unsupp, NULL, NULL, 0, NULL },
596: { "nroff", roff_line_ignore, NULL, NULL, 0, NULL },
1.31 schwarze 597: { "ns", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 598: { "nx", roff_insec, NULL, NULL, 0, NULL },
599: { "open", roff_insec, NULL, NULL, 0, NULL },
600: { "opena", roff_insec, NULL, NULL, 0, NULL },
601: { "os", roff_line_ignore, NULL, NULL, 0, NULL },
602: { "output", roff_unsupp, NULL, NULL, 0, NULL },
603: { "padj", roff_line_ignore, NULL, NULL, 0, NULL },
604: { "papersize", roff_line_ignore, NULL, NULL, 0, NULL },
605: { "pc", roff_line_ignore, NULL, NULL, 0, NULL },
606: { "pev", roff_line_ignore, NULL, NULL, 0, NULL },
607: { "pi", roff_insec, NULL, NULL, 0, NULL },
608: { "PI", roff_unsupp, NULL, NULL, 0, NULL },
1.101 schwarze 609: { "pl", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 610: { "pm", roff_line_ignore, NULL, NULL, 0, NULL },
611: { "pn", roff_line_ignore, NULL, NULL, 0, NULL },
612: { "pnr", roff_line_ignore, NULL, NULL, 0, NULL },
613: { "po", roff_line_ignore, NULL, NULL, 0, NULL },
1.31 schwarze 614: { "ps", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 615: { "psbb", roff_unsupp, NULL, NULL, 0, NULL },
1.127 schwarze 616: { "pshape", roff_unsupp, NULL, NULL, 0, NULL },
1.123 schwarze 617: { "pso", roff_insec, NULL, NULL, 0, NULL },
618: { "ptr", roff_line_ignore, NULL, NULL, 0, NULL },
619: { "pvs", roff_line_ignore, NULL, NULL, 0, NULL },
620: { "rchar", roff_unsupp, NULL, NULL, 0, NULL },
621: { "rd", roff_line_ignore, NULL, NULL, 0, NULL },
622: { "recursionlimit", roff_line_ignore, NULL, NULL, 0, NULL },
623: { "return", roff_unsupp, NULL, NULL, 0, NULL },
624: { "rfschar", roff_unsupp, NULL, NULL, 0, NULL },
625: { "rhang", roff_line_ignore, NULL, NULL, 0, NULL },
626: { "rj", roff_line_ignore, NULL, NULL, 0, NULL },
1.29 schwarze 627: { "rm", roff_rm, NULL, NULL, 0, NULL },
1.123 schwarze 628: { "rn", roff_unsupp, NULL, NULL, 0, NULL },
629: { "rnn", roff_unsupp, NULL, NULL, 0, NULL },
1.76 schwarze 630: { "rr", roff_rr, NULL, NULL, 0, NULL },
1.123 schwarze 631: { "rs", roff_line_ignore, NULL, NULL, 0, NULL },
632: { "rt", roff_line_ignore, NULL, NULL, 0, NULL },
633: { "schar", roff_unsupp, NULL, NULL, 0, NULL },
634: { "sentchar", roff_line_ignore, NULL, NULL, 0, NULL },
635: { "shc", roff_line_ignore, NULL, NULL, 0, NULL },
636: { "shift", roff_unsupp, NULL, NULL, 0, NULL },
637: { "sizes", roff_line_ignore, NULL, NULL, 0, NULL },
1.14 schwarze 638: { "so", roff_so, NULL, NULL, 0, NULL },
1.123 schwarze 639: { "spacewidth", roff_line_ignore, NULL, NULL, 0, NULL },
640: { "special", roff_line_ignore, NULL, NULL, 0, NULL },
641: { "spreadwarn", roff_line_ignore, NULL, NULL, 0, NULL },
642: { "ss", roff_line_ignore, NULL, NULL, 0, NULL },
643: { "sty", roff_line_ignore, NULL, NULL, 0, NULL },
644: { "substring", roff_unsupp, NULL, NULL, 0, NULL },
645: { "sv", roff_line_ignore, NULL, NULL, 0, NULL },
646: { "sy", roff_insec, NULL, NULL, 0, NULL },
647: { "T&", roff_T_, NULL, NULL, 0, NULL },
1.127 schwarze 648: { "ta", roff_unsupp, NULL, NULL, 0, NULL },
1.123 schwarze 649: { "tc", roff_unsupp, NULL, NULL, 0, NULL },
650: { "TE", roff_TE, NULL, NULL, 0, NULL },
651: { "TH", roff_TH, NULL, NULL, 0, NULL },
1.127 schwarze 652: { "ti", roff_unsupp, NULL, NULL, 0, NULL },
1.123 schwarze 653: { "tkf", roff_line_ignore, NULL, NULL, 0, NULL },
654: { "tl", roff_unsupp, NULL, NULL, 0, NULL },
655: { "tm", roff_line_ignore, NULL, NULL, 0, NULL },
656: { "tm1", roff_line_ignore, NULL, NULL, 0, NULL },
657: { "tmc", roff_line_ignore, NULL, NULL, 0, NULL },
1.42 schwarze 658: { "tr", roff_tr, NULL, NULL, 0, NULL },
1.123 schwarze 659: { "track", roff_line_ignore, NULL, NULL, 0, NULL },
660: { "transchar", roff_line_ignore, NULL, NULL, 0, NULL },
661: { "trf", roff_insec, NULL, NULL, 0, NULL },
662: { "trimat", roff_line_ignore, NULL, NULL, 0, NULL },
663: { "trin", roff_unsupp, NULL, NULL, 0, NULL },
664: { "trnt", roff_unsupp, NULL, NULL, 0, NULL },
665: { "troff", roff_line_ignore, NULL, NULL, 0, NULL },
1.27 schwarze 666: { "TS", roff_TS, NULL, NULL, 0, NULL },
1.123 schwarze 667: { "uf", roff_line_ignore, NULL, NULL, 0, NULL },
668: { "ul", roff_line_ignore, NULL, NULL, 0, NULL },
669: { "unformat", roff_unsupp, NULL, NULL, 0, NULL },
670: { "unwatch", roff_line_ignore, NULL, NULL, 0, NULL },
671: { "unwatchn", roff_line_ignore, NULL, NULL, 0, NULL },
672: { "vpt", roff_line_ignore, NULL, NULL, 0, NULL },
673: { "vs", roff_line_ignore, NULL, NULL, 0, NULL },
674: { "warn", roff_line_ignore, NULL, NULL, 0, NULL },
675: { "warnscale", roff_line_ignore, NULL, NULL, 0, NULL },
676: { "watch", roff_line_ignore, NULL, NULL, 0, NULL },
677: { "watchlength", roff_line_ignore, NULL, NULL, 0, NULL },
678: { "watchn", roff_line_ignore, NULL, NULL, 0, NULL },
679: { "wh", roff_unsupp, NULL, NULL, 0, NULL },
680: { "while", roff_unsupp, NULL, NULL, 0, NULL },
681: { "write", roff_insec, NULL, NULL, 0, NULL },
682: { "writec", roff_insec, NULL, NULL, 0, NULL },
683: { "writem", roff_insec, NULL, NULL, 0, NULL },
684: { "xflag", roff_line_ignore, NULL, NULL, 0, NULL },
1.3 schwarze 685: { ".", roff_cblock, NULL, NULL, 0, NULL },
1.16 schwarze 686: { NULL, roff_userdef, NULL, NULL, 0, NULL },
1.1 schwarze 687: };
688:
1.73 schwarze 689: /* not currently implemented: Ds em Eq LP Me PP pp Or Rd Sf SH */
1.47 schwarze 690: const char *const __mdoc_reserved[] = {
691: "Ac", "Ad", "An", "Ao", "Ap", "Aq", "Ar", "At",
692: "Bc", "Bd", "Bf", "Bk", "Bl", "Bo", "Bq",
693: "Brc", "Bro", "Brq", "Bsx", "Bt", "Bx",
694: "Cd", "Cm", "Db", "Dc", "Dd", "Dl", "Do", "Dq",
1.73 schwarze 695: "Dt", "Dv", "Dx", "D1",
696: "Ec", "Ed", "Ef", "Ek", "El", "Em",
697: "En", "Eo", "Er", "Es", "Ev", "Ex",
1.47 schwarze 698: "Fa", "Fc", "Fd", "Fl", "Fn", "Fo", "Fr", "Ft", "Fx",
1.73 schwarze 699: "Hf", "Ic", "In", "It", "Lb", "Li", "Lk", "Lp",
700: "Ms", "Mt", "Nd", "Nm", "No", "Ns", "Nx",
1.47 schwarze 701: "Oc", "Oo", "Op", "Os", "Ot", "Ox",
1.73 schwarze 702: "Pa", "Pc", "Pf", "Po", "Pp", "Pq",
703: "Qc", "Ql", "Qo", "Qq", "Re", "Rs", "Rv",
704: "Sc", "Sh", "Sm", "So", "Sq",
1.47 schwarze 705: "Ss", "St", "Sx", "Sy",
706: "Ta", "Tn", "Ud", "Ux", "Va", "Vt", "Xc", "Xo", "Xr",
1.73 schwarze 707: "%A", "%B", "%C", "%D", "%I", "%J", "%N", "%O",
1.47 schwarze 708: "%P", "%Q", "%R", "%T", "%U", "%V",
709: NULL
710: };
711:
1.73 schwarze 712: /* not currently implemented: BT DE DS ME MT PT SY TQ YS */
1.47 schwarze 713: const char *const __man_reserved[] = {
1.73 schwarze 714: "AT", "B", "BI", "BR", "DT",
715: "EE", "EN", "EQ", "EX", "HP", "I", "IB", "IP", "IR",
716: "LP", "OP", "P", "PD", "PP",
717: "R", "RB", "RE", "RI", "RS", "SB", "SH", "SM", "SS",
718: "TE", "TH", "TP", "TS", "T&", "UC", "UE", "UR",
1.47 schwarze 719: NULL
720: };
721:
1.37 schwarze 722: /* Array of injected predefined strings. */
723: #define PREDEFS_MAX 38
724: static const struct predef predefs[PREDEFS_MAX] = {
725: #include "predefs.in"
726: };
727:
1.42 schwarze 728: /* See roffhash_find() */
1.3 schwarze 729: #define ROFF_HASH(p) (p[0] - ASCII_LO)
730:
1.51 schwarze 731: static int roffit_lines; /* number of lines to delay */
732: static char *roffit_macro; /* nil-terminated macro line */
733:
1.80 schwarze 734:
1.3 schwarze 735: static void
1.42 schwarze 736: roffhash_init(void)
1.3 schwarze 737: {
738: struct roffmac *n;
739: int buc, i;
740:
1.16 schwarze 741: for (i = 0; i < (int)ROFF_USERDEF; i++) {
1.3 schwarze 742: assert(roffs[i].name[0] >= ASCII_LO);
743: assert(roffs[i].name[0] <= ASCII_HI);
744:
745: buc = ROFF_HASH(roffs[i].name);
746:
747: if (NULL != (n = hash[buc])) {
748: for ( ; n->next; n = n->next)
749: /* Do nothing. */ ;
750: n->next = &roffs[i];
751: } else
752: hash[buc] = &roffs[i];
753: }
754: }
755:
1.1 schwarze 756: /*
757: * Look up a roff token by its name. Returns ROFF_MAX if no macro by
758: * the nil-terminated string name could be found.
759: */
760: static enum rofft
1.42 schwarze 761: roffhash_find(const char *p, size_t s)
1.1 schwarze 762: {
1.3 schwarze 763: int buc;
764: struct roffmac *n;
1.1 schwarze 765:
1.3 schwarze 766: /*
767: * libroff has an extremely simple hashtable, for the time
768: * being, which simply keys on the first character, which must
769: * be printable, then walks a chain. It works well enough until
770: * optimised.
771: */
772:
773: if (p[0] < ASCII_LO || p[0] > ASCII_HI)
774: return(ROFF_MAX);
775:
776: buc = ROFF_HASH(p);
777:
778: if (NULL == (n = hash[buc]))
779: return(ROFF_MAX);
780: for ( ; n; n = n->next)
1.16 schwarze 781: if (0 == strncmp(n->name, p, s) && '\0' == n->name[(int)s])
1.3 schwarze 782: return((enum rofft)(n - roffs));
1.1 schwarze 783:
784: return(ROFF_MAX);
785: }
786:
787: /*
788: * Pop the current node off of the stack of roff instructions currently
789: * pending.
790: */
791: static void
792: roffnode_pop(struct roff *r)
793: {
794: struct roffnode *p;
795:
1.2 schwarze 796: assert(r->last);
1.80 schwarze 797: p = r->last;
1.2 schwarze 798:
799: r->last = r->last->parent;
1.16 schwarze 800: free(p->name);
801: free(p->end);
1.1 schwarze 802: free(p);
803: }
804:
805: /*
806: * Push a roff node onto the instruction stack. This must later be
807: * removed with roffnode_pop().
808: */
1.11 schwarze 809: static void
1.16 schwarze 810: roffnode_push(struct roff *r, enum rofft tok, const char *name,
811: int line, int col)
1.1 schwarze 812: {
813: struct roffnode *p;
814:
1.11 schwarze 815: p = mandoc_calloc(1, sizeof(struct roffnode));
1.1 schwarze 816: p->tok = tok;
1.16 schwarze 817: if (name)
818: p->name = mandoc_strdup(name);
1.1 schwarze 819: p->parent = r->last;
820: p->line = line;
821: p->col = col;
1.71 schwarze 822: p->rule = p->parent ? p->parent->rule : 0;
1.1 schwarze 823:
824: r->last = p;
825: }
826:
827: static void
828: roff_free1(struct roff *r)
829: {
1.49 schwarze 830: struct tbl_node *tbl;
1.32 schwarze 831: struct eqn_node *e;
1.42 schwarze 832: int i;
1.27 schwarze 833:
1.49 schwarze 834: while (NULL != (tbl = r->first_tbl)) {
835: r->first_tbl = tbl->next;
836: tbl_free(tbl);
1.27 schwarze 837: }
838: r->first_tbl = r->last_tbl = r->tbl = NULL;
1.1 schwarze 839:
1.32 schwarze 840: while (NULL != (e = r->first_eqn)) {
841: r->first_eqn = e->next;
842: eqn_free(e);
843: }
844: r->first_eqn = r->last_eqn = r->eqn = NULL;
845:
1.1 schwarze 846: while (r->last)
847: roffnode_pop(r);
1.27 schwarze 848:
1.96 schwarze 849: free (r->rstack);
850: r->rstack = NULL;
851: r->rstacksz = 0;
852: r->rstackpos = -1;
853:
854: roff_freereg(r->regtab);
855: r->regtab = NULL;
856:
1.42 schwarze 857: roff_freestr(r->strtab);
858: roff_freestr(r->xmbtab);
859: r->strtab = r->xmbtab = NULL;
860:
861: if (r->xtab)
862: for (i = 0; i < 128; i++)
863: free(r->xtab[i].p);
864: free(r->xtab);
865: r->xtab = NULL;
1.1 schwarze 866: }
867:
868: void
869: roff_reset(struct roff *r)
870: {
871:
872: roff_free1(r);
1.99 schwarze 873: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.48 schwarze 874: r->control = 0;
1.1 schwarze 875: }
876:
877: void
878: roff_free(struct roff *r)
879: {
880:
881: roff_free1(r);
882: free(r);
883: }
884:
885: struct roff *
1.109 schwarze 886: roff_alloc(struct mparse *parse, const struct mchars *mchars, int options)
1.1 schwarze 887: {
888: struct roff *r;
889:
1.11 schwarze 890: r = mandoc_calloc(1, sizeof(struct roff));
1.35 schwarze 891: r->parse = parse;
1.109 schwarze 892: r->mchars = mchars;
1.72 schwarze 893: r->options = options;
1.99 schwarze 894: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.2 schwarze 895: r->rstackpos = -1;
1.80 schwarze 896:
1.42 schwarze 897: roffhash_init();
1.37 schwarze 898:
1.1 schwarze 899: return(r);
1.137 ! schwarze 900: }
! 901:
! 902: static void
! 903: roff_man_free1(struct roff_man *man)
! 904: {
! 905:
! 906: if (man->first != NULL) {
! 907: if (man->macroset == MACROSET_MDOC)
! 908: mdoc_node_delete(man, man->first);
! 909: else
! 910: man_node_delete(man, man->first);
! 911: }
! 912: free(man->meta.msec);
! 913: free(man->meta.vol);
! 914: free(man->meta.os);
! 915: free(man->meta.arch);
! 916: free(man->meta.title);
! 917: free(man->meta.name);
! 918: free(man->meta.date);
! 919: }
! 920:
! 921: static void
! 922: roff_man_alloc1(struct roff_man *man)
! 923: {
! 924:
! 925: memset(&man->meta, 0, sizeof(man->meta));
! 926: man->first = mandoc_calloc(1, sizeof(*man->first));
! 927: man->first->type = ROFFT_ROOT;
! 928: man->last = man->first;
! 929: man->last_es = NULL;
! 930: man->flags = 0;
! 931: man->macroset = MACROSET_NONE;
! 932: man->lastsec = man->lastnamed = SEC_NONE;
! 933: man->next = ROFF_NEXT_CHILD;
! 934: }
! 935:
! 936: void
! 937: roff_man_reset(struct roff_man *man)
! 938: {
! 939:
! 940: roff_man_free1(man);
! 941: roff_man_alloc1(man);
! 942: }
! 943:
! 944: void
! 945: roff_man_free(struct roff_man *man)
! 946: {
! 947:
! 948: roff_man_free1(man);
! 949: free(man);
! 950: }
! 951:
! 952: struct roff_man *
! 953: roff_man_alloc(struct roff *roff, struct mparse *parse,
! 954: const char *defos, int quick)
! 955: {
! 956: struct roff_man *man;
! 957:
! 958: man = mandoc_calloc(1, sizeof(*man));
! 959: man->parse = parse;
! 960: man->roff = roff;
! 961: man->defos = defos;
! 962: man->quick = quick;
! 963: roff_man_alloc1(man);
! 964: return(man);
1.1 schwarze 965: }
966:
1.8 schwarze 967: /*
1.79 schwarze 968: * In the current line, expand escape sequences that tend to get
969: * used in numerical expressions and conditional requests.
970: * Also check the syntax of the remaining escape sequences.
1.8 schwarze 971: */
1.45 schwarze 972: static enum rofferr
1.110 schwarze 973: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.8 schwarze 974: {
1.81 schwarze 975: char ubuf[24]; /* buffer to print the number */
1.78 schwarze 976: const char *start; /* start of the string to process */
1.82 schwarze 977: char *stesc; /* start of an escape sequence ('\\') */
1.23 schwarze 978: const char *stnam; /* start of the name, after "[(*" */
979: const char *cp; /* end of the name, e.g. before ']' */
980: const char *res; /* the string to be substituted */
1.110 schwarze 981: char *nbuf; /* new buffer to copy buf->buf to */
1.53 schwarze 982: size_t maxl; /* expected length of the escape name */
983: size_t naml; /* actual length of the escape name */
1.109 schwarze 984: enum mandoc_esc esc; /* type of the escape sequence */
985: int inaml; /* length returned from mandoc_escape() */
1.53 schwarze 986: int expand_count; /* to avoid infinite loops */
1.79 schwarze 987: int npos; /* position in numeric expression */
1.91 schwarze 988: int arg_complete; /* argument not interrupted by eol */
1.79 schwarze 989: char term; /* character terminating the escape */
1.8 schwarze 990:
1.43 schwarze 991: expand_count = 0;
1.110 schwarze 992: start = buf->buf + pos;
1.78 schwarze 993: stesc = strchr(start, '\0') - 1;
994: while (stesc-- > start) {
1.43 schwarze 995:
1.78 schwarze 996: /* Search backwards for the next backslash. */
997:
1.110 schwarze 998: if (*stesc != '\\')
1.78 schwarze 999: continue;
1000:
1001: /* If it is escaped, skip it. */
1002:
1003: for (cp = stesc - 1; cp >= start; cp--)
1.110 schwarze 1004: if (*cp != '\\')
1.78 schwarze 1005: break;
1006:
1.110 schwarze 1007: if ((stesc - cp) % 2 == 0) {
1.82 schwarze 1008: stesc = (char *)cp;
1.78 schwarze 1009: continue;
1010: }
1.23 schwarze 1011:
1.79 schwarze 1012: /* Decide whether to expand or to check only. */
1.23 schwarze 1013:
1.79 schwarze 1014: term = '\0';
1.78 schwarze 1015: cp = stesc + 1;
1.53 schwarze 1016: switch (*cp) {
1.80 schwarze 1017: case '*':
1.53 schwarze 1018: res = NULL;
1019: break;
1.80 schwarze 1020: case 'B':
1.79 schwarze 1021: /* FALLTHROUGH */
1.80 schwarze 1022: case 'w':
1.79 schwarze 1023: term = cp[1];
1024: /* FALLTHROUGH */
1.80 schwarze 1025: case 'n':
1.53 schwarze 1026: res = ubuf;
1027: break;
1028: default:
1.109 schwarze 1029: esc = mandoc_escape(&cp, &stnam, &inaml);
1030: if (esc == ESCAPE_ERROR ||
1031: (esc == ESCAPE_SPECIAL &&
1032: mchars_spec2cp(r->mchars, stnam, inaml) < 0))
1.92 schwarze 1033: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.110 schwarze 1034: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1035: "%.*s", (int)(cp - stesc), stesc);
1.78 schwarze 1036: continue;
1.42 schwarze 1037: }
1038:
1.78 schwarze 1039: if (EXPAND_LIMIT < ++expand_count) {
1040: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.110 schwarze 1041: ln, (int)(stesc - buf->buf), NULL);
1.78 schwarze 1042: return(ROFF_IGN);
1043: }
1.23 schwarze 1044:
1045: /*
1046: * The third character decides the length
1.53 schwarze 1047: * of the name of the string or register.
1.23 schwarze 1048: * Save a pointer to the name.
1049: */
1050:
1.110 schwarze 1051: if (term == '\0') {
1.79 schwarze 1052: switch (*++cp) {
1.80 schwarze 1053: case '\0':
1.79 schwarze 1054: maxl = 0;
1055: break;
1.80 schwarze 1056: case '(':
1.79 schwarze 1057: cp++;
1058: maxl = 2;
1059: break;
1.80 schwarze 1060: case '[':
1.79 schwarze 1061: cp++;
1062: term = ']';
1063: maxl = 0;
1064: break;
1065: default:
1066: maxl = 1;
1067: break;
1068: }
1069: } else {
1070: cp += 2;
1.8 schwarze 1071: maxl = 0;
1072: }
1.23 schwarze 1073: stnam = cp;
1.8 schwarze 1074:
1.23 schwarze 1075: /* Advance to the end of the name. */
1.8 schwarze 1076:
1.125 schwarze 1077: naml = 0;
1.91 schwarze 1078: arg_complete = 1;
1.125 schwarze 1079: while (maxl == 0 || naml < maxl) {
1.110 schwarze 1080: if (*cp == '\0') {
1.92 schwarze 1081: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 1082: ln, (int)(stesc - buf->buf), stesc);
1.91 schwarze 1083: arg_complete = 0;
1.79 schwarze 1084: break;
1.42 schwarze 1085: }
1.110 schwarze 1086: if (maxl == 0 && *cp == term) {
1.79 schwarze 1087: cp++;
1.125 schwarze 1088: break;
1089: }
1090: if (*cp++ != '\\' || stesc[1] != 'w') {
1091: naml++;
1092: continue;
1093: }
1094: switch (mandoc_escape(&cp, NULL, NULL)) {
1095: case ESCAPE_SPECIAL:
1096: /* FALLTHROUGH */
1097: case ESCAPE_UNICODE:
1098: /* FALLTHROUGH */
1099: case ESCAPE_NUMBERED:
1100: /* FALLTHROUGH */
1101: case ESCAPE_OVERSTRIKE:
1102: naml++;
1103: break;
1104: default:
1.8 schwarze 1105: break;
1.79 schwarze 1106: }
1.8 schwarze 1107: }
1108:
1.23 schwarze 1109: /*
1110: * Retrieve the replacement string; if it is
1111: * undefined, resume searching for escapes.
1112: */
1113:
1.79 schwarze 1114: switch (stesc[1]) {
1.80 schwarze 1115: case '*':
1.91 schwarze 1116: if (arg_complete)
1117: res = roff_getstrn(r, stnam, naml);
1.79 schwarze 1118: break;
1.80 schwarze 1119: case 'B':
1.79 schwarze 1120: npos = 0;
1.91 schwarze 1121: ubuf[0] = arg_complete &&
1.133 schwarze 1122: roff_evalnum(r, ln, stnam, &npos,
1123: NULL, ROFFNUM_SCALE) &&
1.91 schwarze 1124: stnam + npos + 1 == cp ? '1' : '0';
1.79 schwarze 1125: ubuf[1] = '\0';
1126: break;
1.80 schwarze 1127: case 'n':
1.91 schwarze 1128: if (arg_complete)
1129: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1130: roff_getregn(r, stnam, naml));
1131: else
1132: ubuf[0] = '\0';
1.79 schwarze 1133: break;
1.80 schwarze 1134: case 'w':
1.91 schwarze 1135: /* use even incomplete args */
1.81 schwarze 1136: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.79 schwarze 1137: 24 * (int)naml);
1138: break;
1139: }
1.8 schwarze 1140:
1.110 schwarze 1141: if (res == NULL) {
1.92 schwarze 1142: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1143: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1144: "%.*s", (int)naml, stnam);
1.37 schwarze 1145: res = "";
1.118 schwarze 1146: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1147: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1148: ln, (int)(stesc - buf->buf), NULL);
1149: return(ROFF_IGN);
1.8 schwarze 1150: }
1151:
1.23 schwarze 1152: /* Replace the escape sequence by the string. */
1153:
1.82 schwarze 1154: *stesc = '\0';
1.110 schwarze 1155: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1156: buf->buf, res, cp) + 1;
1.8 schwarze 1157:
1.78 schwarze 1158: /* Prepare for the next replacement. */
1.8 schwarze 1159:
1.78 schwarze 1160: start = nbuf + pos;
1.110 schwarze 1161: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1162: free(buf->buf);
1163: buf->buf = nbuf;
1.42 schwarze 1164: }
1.45 schwarze 1165: return(ROFF_CONT);
1.42 schwarze 1166: }
1167:
1168: /*
1.51 schwarze 1169: * Process text streams:
1170: * Convert all breakable hyphens into ASCII_HYPH.
1171: * Decrement and spring input line trap.
1.42 schwarze 1172: */
1173: static enum rofferr
1.110 schwarze 1174: roff_parsetext(struct buf *buf, int pos, int *offs)
1.42 schwarze 1175: {
1176: size_t sz;
1177: const char *start;
1.51 schwarze 1178: char *p;
1179: int isz;
1.42 schwarze 1180: enum mandoc_esc esc;
1181:
1.110 schwarze 1182: start = p = buf->buf + pos;
1.42 schwarze 1183:
1.110 schwarze 1184: while (*p != '\0') {
1.42 schwarze 1185: sz = strcspn(p, "-\\");
1186: p += sz;
1187:
1.110 schwarze 1188: if (*p == '\0')
1.42 schwarze 1189: break;
1190:
1.110 schwarze 1191: if (*p == '\\') {
1.42 schwarze 1192: /* Skip over escapes. */
1193: p++;
1.62 schwarze 1194: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.110 schwarze 1195: if (esc == ESCAPE_ERROR)
1.42 schwarze 1196: break;
1.136 schwarze 1197: while (*p == '-')
1198: p++;
1.42 schwarze 1199: continue;
1200: } else if (p == start) {
1201: p++;
1202: continue;
1203: }
1204:
1.44 schwarze 1205: if (isalpha((unsigned char)p[-1]) &&
1206: isalpha((unsigned char)p[1]))
1.42 schwarze 1207: *p = ASCII_HYPH;
1208: p++;
1.8 schwarze 1209: }
1210:
1.51 schwarze 1211: /* Spring the input line trap. */
1.110 schwarze 1212: if (roffit_lines == 1) {
1213: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1214: free(buf->buf);
1215: buf->buf = p;
1216: buf->sz = isz + 1;
1.51 schwarze 1217: *offs = 0;
1218: free(roffit_macro);
1219: roffit_lines = 0;
1220: return(ROFF_REPARSE);
1.110 schwarze 1221: } else if (roffit_lines > 1)
1.51 schwarze 1222: --roffit_lines;
1.42 schwarze 1223: return(ROFF_CONT);
1.8 schwarze 1224: }
1225:
1.1 schwarze 1226: enum rofferr
1.110 schwarze 1227: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.1 schwarze 1228: {
1229: enum rofft t;
1.27 schwarze 1230: enum rofferr e;
1.110 schwarze 1231: int pos; /* parse point */
1.115 schwarze 1232: int spos; /* saved parse point for messages */
1.110 schwarze 1233: int ppos; /* original offset in buf->buf */
1234: int ctl; /* macro line (boolean) */
1235:
1236: ppos = pos = *offs;
1.1 schwarze 1237:
1.102 schwarze 1238: /* Handle in-line equation delimiters. */
1239:
1.108 schwarze 1240: if (r->tbl == NULL &&
1241: r->last_eqn != NULL && r->last_eqn->delim &&
1.102 schwarze 1242: (r->eqn == NULL || r->eqn_inline)) {
1.110 schwarze 1243: e = roff_eqndelim(r, buf, pos);
1.102 schwarze 1244: if (e == ROFF_REPARSE)
1245: return(e);
1246: assert(e == ROFF_CONT);
1247: }
1248:
1249: /* Expand some escape sequences. */
1.8 schwarze 1250:
1.110 schwarze 1251: e = roff_res(r, buf, ln, pos);
1252: if (e == ROFF_IGN)
1.45 schwarze 1253: return(e);
1.110 schwarze 1254: assert(e == ROFF_CONT);
1.8 schwarze 1255:
1.110 schwarze 1256: ctl = roff_getcontrol(r, buf->buf, &pos);
1.35 schwarze 1257:
1.8 schwarze 1258: /*
1.2 schwarze 1259: * First, if a scope is open and we're not a macro, pass the
1.124 schwarze 1260: * text through the macro's filter.
1261: * Equations process all content themselves.
1262: * Tables process almost all content themselves, but we want
1263: * to warn about macros before passing it there.
1.2 schwarze 1264: */
1265:
1.124 schwarze 1266: if (r->last != NULL && ! ctl) {
1.2 schwarze 1267: t = r->last->tok;
1268: assert(roffs[t].text);
1.110 schwarze 1269: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1270: assert(e == ROFF_IGN || e == ROFF_CONT);
1271: if (e != ROFF_CONT)
1.32 schwarze 1272: return(e);
1.54 schwarze 1273: }
1.124 schwarze 1274: if (r->eqn != NULL)
1.110 schwarze 1275: return(eqn_read(&r->eqn, ln, buf->buf, ppos, offs));
1.124 schwarze 1276: if (r->tbl != NULL && ( ! ctl || buf->buf[pos] == '\0'))
1.131 schwarze 1277: return(tbl_read(r->tbl, ln, buf->buf, ppos));
1.124 schwarze 1278: if ( ! ctl)
1.110 schwarze 1279: return(roff_parsetext(buf, pos, offs));
1.100 schwarze 1280:
1281: /* Skip empty request lines. */
1282:
1.110 schwarze 1283: if (buf->buf[pos] == '"') {
1.100 schwarze 1284: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1285: ln, pos, NULL);
1286: return(ROFF_IGN);
1.110 schwarze 1287: } else if (buf->buf[pos] == '\0')
1.100 schwarze 1288: return(ROFF_IGN);
1.2 schwarze 1289:
1290: /*
1291: * If a scope is open, go to the child handler for that macro,
1292: * as it may want to preprocess before doing anything with it.
1.32 schwarze 1293: * Don't do so if an equation is open.
1.2 schwarze 1294: */
1295:
1296: if (r->last) {
1.1 schwarze 1297: t = r->last->tok;
1298: assert(roffs[t].sub);
1.110 schwarze 1299: return((*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs));
1.2 schwarze 1300: }
1301:
1.115 schwarze 1302: /* No scope is open. This is a new request or macro. */
1303:
1304: spos = pos;
1305: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1306:
1307: /* Tables ignore most macros. */
1308:
1309: if (r->tbl != NULL && (t == ROFF_MAX || t == ROFF_TS)) {
1310: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1311: ln, pos, buf->buf + spos);
1.129 schwarze 1312: if (t == ROFF_TS)
1313: return(ROFF_IGN);
1314: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1315: pos++;
1316: while (buf->buf[pos] != '\0' && buf->buf[pos] == ' ')
1317: pos++;
1318: return(tbl_read(r->tbl, ln, buf->buf, pos));
1.115 schwarze 1319: }
1320:
1.2 schwarze 1321: /*
1.115 schwarze 1322: * This is neither a roff request nor a user-defined macro.
1323: * Let the standard macro set parsers handle it.
1.2 schwarze 1324: */
1325:
1.115 schwarze 1326: if (t == ROFF_MAX)
1.1 schwarze 1327: return(ROFF_CONT);
1.115 schwarze 1328:
1329: /* Execute a roff request or a user defined macro. */
1.1 schwarze 1330:
1.2 schwarze 1331: assert(roffs[t].proc);
1.110 schwarze 1332: return((*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs));
1.2 schwarze 1333: }
1334:
1.27 schwarze 1335: void
1.2 schwarze 1336: roff_endparse(struct roff *r)
1337: {
1.1 schwarze 1338:
1.27 schwarze 1339: if (r->last)
1.94 schwarze 1340: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1341: r->last->line, r->last->col,
1342: roffs[r->last->tok].name);
1.27 schwarze 1343:
1.32 schwarze 1344: if (r->eqn) {
1.94 schwarze 1345: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1346: r->eqn->eqn.ln, r->eqn->eqn.pos, "EQ");
1.41 schwarze 1347: eqn_end(&r->eqn);
1.32 schwarze 1348: }
1349:
1.27 schwarze 1350: if (r->tbl) {
1.94 schwarze 1351: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1352: r->tbl->line, r->tbl->pos, "TS");
1.41 schwarze 1353: tbl_end(&r->tbl);
1.27 schwarze 1354: }
1.1 schwarze 1355: }
1356:
1357: /*
1358: * Parse a roff node's type from the input buffer. This must be in the
1359: * form of ".foo xxx" in the usual way.
1360: */
1361: static enum rofft
1.87 schwarze 1362: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.1 schwarze 1363: {
1.87 schwarze 1364: char *cp;
1.16 schwarze 1365: const char *mac;
1366: size_t maclen;
1.1 schwarze 1367: enum rofft t;
1368:
1.87 schwarze 1369: cp = buf + *pos;
1370:
1371: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.1 schwarze 1372: return(ROFF_MAX);
1373:
1.87 schwarze 1374: mac = cp;
1375: maclen = roff_getname(r, &cp, ln, ppos);
1.1 schwarze 1376:
1.16 schwarze 1377: t = (r->current_string = roff_getstrn(r, mac, maclen))
1.42 schwarze 1378: ? ROFF_USERDEF : roffhash_find(mac, maclen);
1.1 schwarze 1379:
1.87 schwarze 1380: if (ROFF_MAX != t)
1381: *pos = cp - buf;
1.1 schwarze 1382:
1383: return(t);
1384: }
1385:
1386: static enum rofferr
1.2 schwarze 1387: roff_cblock(ROFF_ARGS)
1.1 schwarze 1388: {
1389:
1.2 schwarze 1390: /*
1391: * A block-close `..' should only be invoked as a child of an
1392: * ignore macro, otherwise raise a warning and just ignore it.
1393: */
1394:
1.110 schwarze 1395: if (r->last == NULL) {
1.94 schwarze 1396: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1397: ln, ppos, "..");
1.2 schwarze 1398: return(ROFF_IGN);
1399: }
1.1 schwarze 1400:
1.2 schwarze 1401: switch (r->last->tok) {
1.80 schwarze 1402: case ROFF_am:
1.93 schwarze 1403: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.2 schwarze 1404: /* FALLTHROUGH */
1.80 schwarze 1405: case ROFF_ami:
1.2 schwarze 1406: /* FALLTHROUGH */
1.80 schwarze 1407: case ROFF_de:
1.23 schwarze 1408: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.2 schwarze 1409: /* FALLTHROUGH */
1.80 schwarze 1410: case ROFF_dei:
1.2 schwarze 1411: /* FALLTHROUGH */
1.80 schwarze 1412: case ROFF_ig:
1.2 schwarze 1413: break;
1414: default:
1.94 schwarze 1415: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1416: ln, ppos, "..");
1.1 schwarze 1417: return(ROFF_IGN);
1.2 schwarze 1418: }
1419:
1.110 schwarze 1420: if (buf->buf[pos] != '\0')
1.90 schwarze 1421: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 1422: ".. %s", buf->buf + pos);
1.2 schwarze 1423:
1424: roffnode_pop(r);
1425: roffnode_cleanscope(r);
1426: return(ROFF_IGN);
1427:
1428: }
1.1 schwarze 1429:
1.2 schwarze 1430: static void
1431: roffnode_cleanscope(struct roff *r)
1432: {
1.1 schwarze 1433:
1.2 schwarze 1434: while (r->last) {
1.46 schwarze 1435: if (--r->last->endspan != 0)
1.2 schwarze 1436: break;
1437: roffnode_pop(r);
1438: }
1439: }
1.1 schwarze 1440:
1.68 schwarze 1441: static void
1442: roff_ccond(struct roff *r, int ln, int ppos)
1.2 schwarze 1443: {
1.1 schwarze 1444:
1.2 schwarze 1445: if (NULL == r->last) {
1.94 schwarze 1446: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1447: ln, ppos, "\\}");
1.68 schwarze 1448: return;
1.2 schwarze 1449: }
1.1 schwarze 1450:
1.2 schwarze 1451: switch (r->last->tok) {
1.80 schwarze 1452: case ROFF_el:
1.2 schwarze 1453: /* FALLTHROUGH */
1.80 schwarze 1454: case ROFF_ie:
1.2 schwarze 1455: /* FALLTHROUGH */
1.80 schwarze 1456: case ROFF_if:
1.2 schwarze 1457: break;
1458: default:
1.94 schwarze 1459: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1460: ln, ppos, "\\}");
1.68 schwarze 1461: return;
1.2 schwarze 1462: }
1.1 schwarze 1463:
1.2 schwarze 1464: if (r->last->endspan > -1) {
1.94 schwarze 1465: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1466: ln, ppos, "\\}");
1.68 schwarze 1467: return;
1.2 schwarze 1468: }
1469:
1470: roffnode_pop(r);
1471: roffnode_cleanscope(r);
1.68 schwarze 1472: return;
1.1 schwarze 1473: }
1474:
1475: static enum rofferr
1.2 schwarze 1476: roff_block(ROFF_ARGS)
1.1 schwarze 1477: {
1.93 schwarze 1478: const char *name;
1479: char *iname, *cp;
1.86 schwarze 1480: size_t namesz;
1.16 schwarze 1481:
1.93 schwarze 1482: /* Ignore groff compatibility mode for now. */
1.2 schwarze 1483:
1.110 schwarze 1484: if (tok == ROFF_de1)
1.93 schwarze 1485: tok = ROFF_de;
1.123 schwarze 1486: else if (tok == ROFF_dei1)
1487: tok = ROFF_dei;
1.110 schwarze 1488: else if (tok == ROFF_am1)
1.93 schwarze 1489: tok = ROFF_am;
1.123 schwarze 1490: else if (tok == ROFF_ami1)
1491: tok = ROFF_ami;
1.93 schwarze 1492:
1493: /* Parse the macro name argument. */
1494:
1.110 schwarze 1495: cp = buf->buf + pos;
1496: if (tok == ROFF_ig) {
1.93 schwarze 1497: iname = NULL;
1498: namesz = 0;
1499: } else {
1500: iname = cp;
1501: namesz = roff_getname(r, &cp, ln, ppos);
1502: iname[namesz] = '\0';
1503: }
1.22 schwarze 1504:
1.93 schwarze 1505: /* Resolve the macro name argument if it is indirect. */
1.22 schwarze 1506:
1.110 schwarze 1507: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1508: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.93 schwarze 1509: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1510: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1511: "%.*s", (int)namesz, iname);
1512: namesz = 0;
1513: } else
1514: namesz = strlen(name);
1515: } else
1516: name = iname;
1.22 schwarze 1517:
1.110 schwarze 1518: if (namesz == 0 && tok != ROFF_ig) {
1.93 schwarze 1519: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1520: ln, ppos, roffs[tok].name);
1521: return(ROFF_IGN);
1522: }
1.2 schwarze 1523:
1.16 schwarze 1524: roffnode_push(r, tok, name, ln, ppos);
1525:
1526: /*
1527: * At the beginning of a `de' macro, clear the existing string
1528: * with the same name, if there is one. New content will be
1.66 schwarze 1529: * appended from roff_block_text() in multiline mode.
1.16 schwarze 1530: */
1.22 schwarze 1531:
1.110 schwarze 1532: if (tok == ROFF_de || tok == ROFF_dei)
1.86 schwarze 1533: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.2 schwarze 1534:
1.110 schwarze 1535: if (*cp == '\0')
1.2 schwarze 1536: return(ROFF_IGN);
1.1 schwarze 1537:
1.93 schwarze 1538: /* Get the custom end marker. */
1.22 schwarze 1539:
1.93 schwarze 1540: iname = cp;
1.86 schwarze 1541: namesz = roff_getname(r, &cp, ln, ppos);
1.93 schwarze 1542:
1543: /* Resolve the end marker if it is indirect. */
1544:
1.110 schwarze 1545: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1546: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.93 schwarze 1547: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1548: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1549: "%.*s", (int)namesz, iname);
1550: namesz = 0;
1551: } else
1552: namesz = strlen(name);
1553: } else
1554: name = iname;
1555:
1.86 schwarze 1556: if (namesz)
1557: r->last->end = mandoc_strndup(name, namesz);
1.2 schwarze 1558:
1.110 schwarze 1559: if (*cp != '\0')
1.90 schwarze 1560: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1561: ln, pos, ".%s ... %s", roffs[tok].name, cp);
1.1 schwarze 1562:
1563: return(ROFF_IGN);
1564: }
1565:
1566: static enum rofferr
1.2 schwarze 1567: roff_block_sub(ROFF_ARGS)
1.1 schwarze 1568: {
1.2 schwarze 1569: enum rofft t;
1570: int i, j;
1571:
1572: /*
1573: * First check whether a custom macro exists at this level. If
1574: * it does, then check against it. This is some of groff's
1575: * stranger behaviours. If we encountered a custom end-scope
1576: * tag and that tag also happens to be a "real" macro, then we
1577: * need to try interpreting it again as a real macro. If it's
1578: * not, then return ignore. Else continue.
1579: */
1580:
1581: if (r->last->end) {
1.35 schwarze 1582: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.110 schwarze 1583: if (buf->buf[i] != r->last->end[j])
1.2 schwarze 1584: break;
1.1 schwarze 1585:
1.110 schwarze 1586: if (r->last->end[j] == '\0' &&
1587: (buf->buf[i] == '\0' ||
1588: buf->buf[i] == ' ' ||
1589: buf->buf[i] == '\t')) {
1.2 schwarze 1590: roffnode_pop(r);
1591: roffnode_cleanscope(r);
1.1 schwarze 1592:
1.110 schwarze 1593: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.35 schwarze 1594: i++;
1595:
1596: pos = i;
1.110 schwarze 1597: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1598: ROFF_MAX)
1.2 schwarze 1599: return(ROFF_RERUN);
1600: return(ROFF_IGN);
1601: }
1.1 schwarze 1602: }
1603:
1.2 schwarze 1604: /*
1605: * If we have no custom end-query or lookup failed, then try
1606: * pulling it out of the hashtable.
1607: */
1.1 schwarze 1608:
1.110 schwarze 1609: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.1 schwarze 1610:
1.110 schwarze 1611: if (t != ROFF_cblock) {
1612: if (tok != ROFF_ig)
1613: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.1 schwarze 1614: return(ROFF_IGN);
1.16 schwarze 1615: }
1.1 schwarze 1616:
1.2 schwarze 1617: assert(roffs[t].proc);
1.110 schwarze 1618: return((*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs));
1.2 schwarze 1619: }
1620:
1621: static enum rofferr
1622: roff_block_text(ROFF_ARGS)
1623: {
1624:
1.110 schwarze 1625: if (tok != ROFF_ig)
1626: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.16 schwarze 1627:
1.2 schwarze 1628: return(ROFF_IGN);
1629: }
1630:
1631: static enum rofferr
1632: roff_cond_sub(ROFF_ARGS)
1633: {
1634: enum rofft t;
1.37 schwarze 1635: char *ep;
1.71 schwarze 1636: int rr;
1.2 schwarze 1637:
1638: rr = r->last->rule;
1.37 schwarze 1639: roffnode_cleanscope(r);
1.110 schwarze 1640: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.2 schwarze 1641:
1.37 schwarze 1642: /*
1.50 schwarze 1643: * Fully handle known macros when they are structurally
1644: * required or when the conditional evaluated to true.
1.5 schwarze 1645: */
1646:
1.110 schwarze 1647: if ((t != ROFF_MAX) &&
1648: (rr || roffs[t].flags & ROFFMAC_STRUCT)) {
1.50 schwarze 1649: assert(roffs[t].proc);
1.110 schwarze 1650: return((*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs));
1.50 schwarze 1651: }
1.39 schwarze 1652:
1.69 schwarze 1653: /*
1654: * If `\}' occurs on a macro line without a preceding macro,
1655: * drop the line completely.
1656: */
1657:
1.110 schwarze 1658: ep = buf->buf + pos;
1659: if (ep[0] == '\\' && ep[1] == '}')
1.71 schwarze 1660: rr = 0;
1.69 schwarze 1661:
1.50 schwarze 1662: /* Always check for the closing delimiter `\}'. */
1.39 schwarze 1663:
1.110 schwarze 1664: while ((ep = strchr(ep, '\\')) != NULL) {
1665: if (*(++ep) == '}') {
1.70 schwarze 1666: *ep = '&';
1.110 schwarze 1667: roff_ccond(r, ln, ep - buf->buf - 1);
1.70 schwarze 1668: }
1.119 schwarze 1669: if (*ep != '\0')
1670: ++ep;
1.50 schwarze 1671: }
1.71 schwarze 1672: return(rr ? ROFF_CONT : ROFF_IGN);
1.2 schwarze 1673: }
1674:
1675: static enum rofferr
1676: roff_cond_text(ROFF_ARGS)
1677: {
1.37 schwarze 1678: char *ep;
1.71 schwarze 1679: int rr;
1.2 schwarze 1680:
1681: rr = r->last->rule;
1.37 schwarze 1682: roffnode_cleanscope(r);
1.1 schwarze 1683:
1.110 schwarze 1684: ep = buf->buf + pos;
1685: while ((ep = strchr(ep, '\\')) != NULL) {
1686: if (*(++ep) == '}') {
1.70 schwarze 1687: *ep = '&';
1.110 schwarze 1688: roff_ccond(r, ln, ep - buf->buf - 1);
1.70 schwarze 1689: }
1.119 schwarze 1690: if (*ep != '\0')
1691: ++ep;
1.2 schwarze 1692: }
1.71 schwarze 1693: return(rr ? ROFF_CONT : ROFF_IGN);
1.2 schwarze 1694: }
1695:
1.77 schwarze 1696: /*
1697: * Parse a single signed integer number. Stop at the first non-digit.
1698: * If there is at least one digit, return success and advance the
1699: * parse point, else return failure and let the parse point unchanged.
1700: * Ignore overflows, treat them just like the C language.
1701: */
1.56 schwarze 1702: static int
1.133 schwarze 1703: roff_getnum(const char *v, int *pos, int *res, int flags)
1.56 schwarze 1704: {
1.133 schwarze 1705: int myres, scaled, n, p;
1.79 schwarze 1706:
1707: if (NULL == res)
1708: res = &myres;
1.56 schwarze 1709:
1710: p = *pos;
1711: n = v[p] == '-';
1.133 schwarze 1712: if (n || v[p] == '+')
1.56 schwarze 1713: p++;
1714:
1.133 schwarze 1715: if (flags & ROFFNUM_WHITE)
1716: while (isspace((unsigned char)v[p]))
1717: p++;
1718:
1.56 schwarze 1719: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.77 schwarze 1720: *res = 10 * *res + v[p] - '0';
1.56 schwarze 1721: if (p == *pos + n)
1722: return 0;
1723:
1724: if (n)
1725: *res = -*res;
1726:
1.126 schwarze 1727: /* Each number may be followed by one optional scaling unit. */
1728:
1729: switch (v[p]) {
1730: case 'f':
1.133 schwarze 1731: scaled = *res * 65536;
1.126 schwarze 1732: break;
1733: case 'i':
1.133 schwarze 1734: scaled = *res * 240;
1.126 schwarze 1735: break;
1736: case 'c':
1.133 schwarze 1737: scaled = *res * 240 / 2.54;
1.126 schwarze 1738: break;
1739: case 'v':
1740: /* FALLTROUGH */
1741: case 'P':
1.133 schwarze 1742: scaled = *res * 40;
1.126 schwarze 1743: break;
1744: case 'm':
1745: /* FALLTROUGH */
1746: case 'n':
1.133 schwarze 1747: scaled = *res * 24;
1.126 schwarze 1748: break;
1749: case 'p':
1.133 schwarze 1750: scaled = *res * 10 / 3;
1.126 schwarze 1751: break;
1752: case 'u':
1.133 schwarze 1753: scaled = *res;
1.126 schwarze 1754: break;
1755: case 'M':
1.133 schwarze 1756: scaled = *res * 6 / 25;
1.126 schwarze 1757: break;
1758: default:
1.133 schwarze 1759: scaled = *res;
1.126 schwarze 1760: p--;
1761: break;
1762: }
1.133 schwarze 1763: if (flags & ROFFNUM_SCALE)
1764: *res = scaled;
1.126 schwarze 1765:
1766: *pos = p + 1;
1767: return(1);
1.56 schwarze 1768: }
1769:
1.71 schwarze 1770: /*
1771: * Evaluate a string comparison condition.
1772: * The first character is the delimiter.
1773: * Succeed if the string up to its second occurrence
1774: * matches the string up to its third occurence.
1775: * Advance the cursor after the third occurrence
1776: * or lacking that, to the end of the line.
1777: */
1778: static int
1779: roff_evalstrcond(const char *v, int *pos)
1780: {
1781: const char *s1, *s2, *s3;
1782: int match;
1783:
1784: match = 0;
1785: s1 = v + *pos; /* initial delimiter */
1786: s2 = s1 + 1; /* for scanning the first string */
1787: s3 = strchr(s2, *s1); /* for scanning the second string */
1788:
1789: if (NULL == s3) /* found no middle delimiter */
1790: goto out;
1791:
1792: while ('\0' != *++s3) {
1793: if (*s2 != *s3) { /* mismatch */
1794: s3 = strchr(s3, *s1);
1795: break;
1796: }
1797: if (*s3 == *s1) { /* found the final delimiter */
1798: match = 1;
1799: break;
1800: }
1801: s2++;
1802: }
1803:
1804: out:
1805: if (NULL == s3)
1806: s3 = strchr(s2, '\0');
1.114 schwarze 1807: else if (*s3 != '\0')
1.71 schwarze 1808: s3++;
1809: *pos = s3 - v;
1810: return(match);
1811: }
1812:
1.77 schwarze 1813: /*
1814: * Evaluate an optionally negated single character, numerical,
1815: * or string condition.
1816: */
1.71 schwarze 1817: static int
1.106 schwarze 1818: roff_evalcond(struct roff *r, int ln, const char *v, int *pos)
1.5 schwarze 1819: {
1.113 schwarze 1820: int number, savepos, wanttrue;
1.5 schwarze 1821:
1.71 schwarze 1822: if ('!' == v[*pos]) {
1823: wanttrue = 0;
1824: (*pos)++;
1825: } else
1826: wanttrue = 1;
1827:
1.5 schwarze 1828: switch (v[*pos]) {
1.112 schwarze 1829: case '\0':
1830: return(0);
1.80 schwarze 1831: case 'n':
1.71 schwarze 1832: /* FALLTHROUGH */
1.80 schwarze 1833: case 'o':
1.5 schwarze 1834: (*pos)++;
1.71 schwarze 1835: return(wanttrue);
1.80 schwarze 1836: case 'c':
1.71 schwarze 1837: /* FALLTHROUGH */
1.80 schwarze 1838: case 'd':
1.71 schwarze 1839: /* FALLTHROUGH */
1.80 schwarze 1840: case 'e':
1.5 schwarze 1841: /* FALLTHROUGH */
1.80 schwarze 1842: case 'r':
1.5 schwarze 1843: /* FALLTHROUGH */
1.80 schwarze 1844: case 't':
1.111 schwarze 1845: /* FALLTHROUGH */
1846: case 'v':
1.5 schwarze 1847: (*pos)++;
1.71 schwarze 1848: return(!wanttrue);
1.5 schwarze 1849: default:
1850: break;
1851: }
1852:
1.113 schwarze 1853: savepos = *pos;
1.133 schwarze 1854: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.77 schwarze 1855: return((number > 0) == wanttrue);
1.113 schwarze 1856: else if (*pos == savepos)
1857: return(roff_evalstrcond(v, pos) == wanttrue);
1.77 schwarze 1858: else
1.113 schwarze 1859: return (0);
1.5 schwarze 1860: }
1861:
1.2 schwarze 1862: static enum rofferr
1.21 schwarze 1863: roff_line_ignore(ROFF_ARGS)
1.6 schwarze 1864: {
1.30 schwarze 1865:
1.21 schwarze 1866: return(ROFF_IGN);
1867: }
1868:
1869: static enum rofferr
1.123 schwarze 1870: roff_insec(ROFF_ARGS)
1871: {
1872:
1873: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
1874: ln, ppos, roffs[tok].name);
1875: return(ROFF_IGN);
1876: }
1877:
1878: static enum rofferr
1879: roff_unsupp(ROFF_ARGS)
1880: {
1881:
1882: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
1883: ln, ppos, roffs[tok].name);
1884: return(ROFF_IGN);
1885: }
1886:
1887: static enum rofferr
1.2 schwarze 1888: roff_cond(ROFF_ARGS)
1889: {
1.46 schwarze 1890:
1891: roffnode_push(r, tok, NULL, ln, ppos);
1.2 schwarze 1892:
1.80 schwarze 1893: /*
1.35 schwarze 1894: * An `.el' has no conditional body: it will consume the value
1895: * of the current rstack entry set in prior `ie' calls or
1.80 schwarze 1896: * defaults to DENY.
1.35 schwarze 1897: *
1898: * If we're not an `el', however, then evaluate the conditional.
1899: */
1.1 schwarze 1900:
1.110 schwarze 1901: r->last->rule = tok == ROFF_el ?
1.80 schwarze 1902: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.110 schwarze 1903: roff_evalcond(r, ln, buf->buf, &pos);
1.2 schwarze 1904:
1.35 schwarze 1905: /*
1906: * An if-else will put the NEGATION of the current evaluated
1907: * conditional into the stack of rules.
1908: */
1909:
1.110 schwarze 1910: if (tok == ROFF_ie) {
1.96 schwarze 1911: if (r->rstackpos + 1 == r->rstacksz) {
1912: r->rstacksz += 16;
1913: r->rstack = mandoc_reallocarray(r->rstack,
1914: r->rstacksz, sizeof(int));
1.35 schwarze 1915: }
1.71 schwarze 1916: r->rstack[++r->rstackpos] = !r->last->rule;
1.2 schwarze 1917: }
1.5 schwarze 1918:
1919: /* If the parent has false as its rule, then so do we. */
1920:
1.71 schwarze 1921: if (r->last->parent && !r->last->parent->rule)
1922: r->last->rule = 0;
1.5 schwarze 1923:
1924: /*
1.46 schwarze 1925: * Determine scope.
1926: * If there is nothing on the line after the conditional,
1927: * not even whitespace, use next-line scope.
1.5 schwarze 1928: */
1.2 schwarze 1929:
1.110 schwarze 1930: if (buf->buf[pos] == '\0') {
1.46 schwarze 1931: r->last->endspan = 2;
1932: goto out;
1933: }
1934:
1.110 schwarze 1935: while (buf->buf[pos] == ' ')
1.46 schwarze 1936: pos++;
1937:
1938: /* An opening brace requests multiline scope. */
1.2 schwarze 1939:
1.110 schwarze 1940: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.2 schwarze 1941: r->last->endspan = -1;
1942: pos += 2;
1.46 schwarze 1943: goto out;
1.80 schwarze 1944: }
1.2 schwarze 1945:
1946: /*
1.46 schwarze 1947: * Anything else following the conditional causes
1948: * single-line scope. Warn if the scope contains
1949: * nothing but trailing whitespace.
1.2 schwarze 1950: */
1951:
1.110 schwarze 1952: if (buf->buf[pos] == '\0')
1.89 schwarze 1953: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
1954: ln, ppos, roffs[tok].name);
1.2 schwarze 1955:
1.46 schwarze 1956: r->last->endspan = 1;
1.1 schwarze 1957:
1.46 schwarze 1958: out:
1.2 schwarze 1959: *offs = pos;
1960: return(ROFF_RERUN);
1.1 schwarze 1961: }
1962:
1.2 schwarze 1963: static enum rofferr
1.7 schwarze 1964: roff_ds(ROFF_ARGS)
1965: {
1.85 schwarze 1966: char *string;
1967: const char *name;
1968: size_t namesz;
1.10 schwarze 1969:
1.123 schwarze 1970: /* Ignore groff compatibility mode for now. */
1971:
1972: if (tok == ROFF_ds1)
1973: tok = ROFF_ds;
1974: else if (tok == ROFF_as1)
1975: tok = ROFF_as;
1976:
1.10 schwarze 1977: /*
1.85 schwarze 1978: * The first word is the name of the string.
1979: * If it is empty or terminated by an escape sequence,
1980: * abort the `ds' request without defining anything.
1.10 schwarze 1981: */
1.7 schwarze 1982:
1.110 schwarze 1983: name = string = buf->buf + pos;
1984: if (*name == '\0')
1.7 schwarze 1985: return(ROFF_IGN);
1986:
1.85 schwarze 1987: namesz = roff_getname(r, &string, ln, pos);
1.110 schwarze 1988: if (name[namesz] == '\\')
1.85 schwarze 1989: return(ROFF_IGN);
1990:
1991: /* Read past the initial double-quote, if any. */
1.110 schwarze 1992: if (*string == '"')
1.7 schwarze 1993: string++;
1994:
1.10 schwarze 1995: /* The rest is the value. */
1.85 schwarze 1996: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
1997: ROFF_as == tok);
1.7 schwarze 1998: return(ROFF_IGN);
1999: }
2000:
1.77 schwarze 2001: /*
2002: * Parse a single operator, one or two characters long.
2003: * If the operator is recognized, return success and advance the
2004: * parse point, else return failure and let the parse point unchanged.
2005: */
2006: static int
2007: roff_getop(const char *v, int *pos, char *res)
2008: {
2009:
2010: *res = v[*pos];
2011:
2012: switch (*res) {
1.80 schwarze 2013: case '+':
1.77 schwarze 2014: /* FALLTHROUGH */
1.80 schwarze 2015: case '-':
1.77 schwarze 2016: /* FALLTHROUGH */
1.80 schwarze 2017: case '*':
1.77 schwarze 2018: /* FALLTHROUGH */
1.80 schwarze 2019: case '/':
1.77 schwarze 2020: /* FALLTHROUGH */
1.80 schwarze 2021: case '%':
1.77 schwarze 2022: /* FALLTHROUGH */
1.80 schwarze 2023: case '&':
1.77 schwarze 2024: /* FALLTHROUGH */
1.80 schwarze 2025: case ':':
1.77 schwarze 2026: break;
2027: case '<':
2028: switch (v[*pos + 1]) {
1.80 schwarze 2029: case '=':
1.77 schwarze 2030: *res = 'l';
2031: (*pos)++;
2032: break;
1.80 schwarze 2033: case '>':
1.77 schwarze 2034: *res = '!';
2035: (*pos)++;
2036: break;
1.80 schwarze 2037: case '?':
1.77 schwarze 2038: *res = 'i';
2039: (*pos)++;
2040: break;
2041: default:
2042: break;
2043: }
2044: break;
2045: case '>':
2046: switch (v[*pos + 1]) {
1.80 schwarze 2047: case '=':
1.77 schwarze 2048: *res = 'g';
2049: (*pos)++;
2050: break;
1.80 schwarze 2051: case '?':
1.77 schwarze 2052: *res = 'a';
2053: (*pos)++;
2054: break;
2055: default:
2056: break;
2057: }
2058: break;
2059: case '=':
2060: if ('=' == v[*pos + 1])
2061: (*pos)++;
2062: break;
2063: default:
2064: return(0);
2065: }
2066: (*pos)++;
2067:
2068: return(*res);
2069: }
2070:
2071: /*
2072: * Evaluate either a parenthesized numeric expression
2073: * or a single signed integer number.
2074: */
2075: static int
1.106 schwarze 2076: roff_evalpar(struct roff *r, int ln,
1.133 schwarze 2077: const char *v, int *pos, int *res, int flags)
1.77 schwarze 2078: {
2079:
2080: if ('(' != v[*pos])
1.133 schwarze 2081: return(roff_getnum(v, pos, res, flags));
1.77 schwarze 2082:
2083: (*pos)++;
1.133 schwarze 2084: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.77 schwarze 2085: return(0);
2086:
1.79 schwarze 2087: /*
2088: * Omission of the closing parenthesis
2089: * is an error in validation mode,
2090: * but ignored in evaluation mode.
2091: */
2092:
1.77 schwarze 2093: if (')' == v[*pos])
2094: (*pos)++;
1.79 schwarze 2095: else if (NULL == res)
2096: return(0);
1.77 schwarze 2097:
2098: return(1);
2099: }
2100:
2101: /*
2102: * Evaluate a complete numeric expression.
2103: * Proceed left to right, there is no concept of precedence.
2104: */
2105: static int
1.106 schwarze 2106: roff_evalnum(struct roff *r, int ln, const char *v,
1.133 schwarze 2107: int *pos, int *res, int flags)
1.77 schwarze 2108: {
2109: int mypos, operand2;
2110: char operator;
2111:
2112: if (NULL == pos) {
2113: mypos = 0;
2114: pos = &mypos;
2115: }
2116:
1.133 schwarze 2117: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2118: while (isspace((unsigned char)v[*pos]))
2119: (*pos)++;
2120:
1.133 schwarze 2121: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.77 schwarze 2122: return(0);
2123:
2124: while (1) {
1.133 schwarze 2125: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2126: while (isspace((unsigned char)v[*pos]))
2127: (*pos)++;
2128:
2129: if ( ! roff_getop(v, pos, &operator))
2130: break;
2131:
1.133 schwarze 2132: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2133: while (isspace((unsigned char)v[*pos]))
2134: (*pos)++;
2135:
1.133 schwarze 2136: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.77 schwarze 2137: return(0);
2138:
1.133 schwarze 2139: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2140: while (isspace((unsigned char)v[*pos]))
2141: (*pos)++;
1.79 schwarze 2142:
2143: if (NULL == res)
2144: continue;
1.77 schwarze 2145:
2146: switch (operator) {
1.80 schwarze 2147: case '+':
1.77 schwarze 2148: *res += operand2;
2149: break;
1.80 schwarze 2150: case '-':
1.77 schwarze 2151: *res -= operand2;
2152: break;
1.80 schwarze 2153: case '*':
1.77 schwarze 2154: *res *= operand2;
2155: break;
1.80 schwarze 2156: case '/':
1.116 schwarze 2157: if (operand2 == 0) {
1.106 schwarze 2158: mandoc_msg(MANDOCERR_DIVZERO,
2159: r->parse, ln, *pos, v);
2160: *res = 0;
2161: break;
2162: }
1.77 schwarze 2163: *res /= operand2;
2164: break;
1.80 schwarze 2165: case '%':
1.116 schwarze 2166: if (operand2 == 0) {
2167: mandoc_msg(MANDOCERR_DIVZERO,
2168: r->parse, ln, *pos, v);
2169: *res = 0;
2170: break;
2171: }
1.77 schwarze 2172: *res %= operand2;
2173: break;
1.80 schwarze 2174: case '<':
1.77 schwarze 2175: *res = *res < operand2;
2176: break;
1.80 schwarze 2177: case '>':
1.77 schwarze 2178: *res = *res > operand2;
2179: break;
1.80 schwarze 2180: case 'l':
1.77 schwarze 2181: *res = *res <= operand2;
2182: break;
1.80 schwarze 2183: case 'g':
1.77 schwarze 2184: *res = *res >= operand2;
2185: break;
1.80 schwarze 2186: case '=':
1.77 schwarze 2187: *res = *res == operand2;
2188: break;
1.80 schwarze 2189: case '!':
1.77 schwarze 2190: *res = *res != operand2;
2191: break;
1.80 schwarze 2192: case '&':
1.77 schwarze 2193: *res = *res && operand2;
2194: break;
1.80 schwarze 2195: case ':':
1.77 schwarze 2196: *res = *res || operand2;
2197: break;
1.80 schwarze 2198: case 'i':
1.77 schwarze 2199: if (operand2 < *res)
2200: *res = operand2;
2201: break;
1.80 schwarze 2202: case 'a':
1.77 schwarze 2203: if (operand2 > *res)
2204: *res = operand2;
2205: break;
2206: default:
2207: abort();
2208: }
2209: }
2210: return(1);
2211: }
2212:
1.52 schwarze 2213: void
1.60 schwarze 2214: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.41 schwarze 2215: {
1.52 schwarze 2216: struct roffreg *reg;
2217:
2218: /* Search for an existing register with the same name. */
2219: reg = r->regtab;
2220:
2221: while (reg && strcmp(name, reg->key.p))
2222: reg = reg->next;
1.41 schwarze 2223:
1.52 schwarze 2224: if (NULL == reg) {
2225: /* Create a new register. */
2226: reg = mandoc_malloc(sizeof(struct roffreg));
2227: reg->key.p = mandoc_strdup(name);
2228: reg->key.sz = strlen(name);
1.60 schwarze 2229: reg->val = 0;
1.52 schwarze 2230: reg->next = r->regtab;
2231: r->regtab = reg;
2232: }
2233:
1.60 schwarze 2234: if ('+' == sign)
2235: reg->val += val;
2236: else if ('-' == sign)
2237: reg->val -= val;
2238: else
2239: reg->val = val;
1.41 schwarze 2240: }
2241:
1.65 schwarze 2242: /*
2243: * Handle some predefined read-only number registers.
2244: * For now, return -1 if the requested register is not predefined;
2245: * in case a predefined read-only register having the value -1
2246: * were to turn up, another special value would have to be chosen.
2247: */
2248: static int
2249: roff_getregro(const char *name)
2250: {
2251:
2252: switch (*name) {
1.80 schwarze 2253: case 'A': /* ASCII approximation mode is always off. */
1.65 schwarze 2254: return(0);
1.80 schwarze 2255: case 'g': /* Groff compatibility mode is always on. */
1.65 schwarze 2256: return(1);
1.80 schwarze 2257: case 'H': /* Fixed horizontal resolution. */
1.65 schwarze 2258: return (24);
1.80 schwarze 2259: case 'j': /* Always adjust left margin only. */
1.65 schwarze 2260: return(0);
1.80 schwarze 2261: case 'T': /* Some output device is always defined. */
1.65 schwarze 2262: return(1);
1.80 schwarze 2263: case 'V': /* Fixed vertical resolution. */
1.65 schwarze 2264: return (40);
2265: default:
2266: return (-1);
2267: }
2268: }
2269:
1.53 schwarze 2270: int
1.52 schwarze 2271: roff_getreg(const struct roff *r, const char *name)
1.41 schwarze 2272: {
1.52 schwarze 2273: struct roffreg *reg;
1.65 schwarze 2274: int val;
2275:
2276: if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) {
2277: val = roff_getregro(name + 1);
2278: if (-1 != val)
2279: return (val);
2280: }
1.52 schwarze 2281:
2282: for (reg = r->regtab; reg; reg = reg->next)
2283: if (0 == strcmp(name, reg->key.p))
1.53 schwarze 2284: return(reg->val);
2285:
2286: return(0);
2287: }
2288:
2289: static int
2290: roff_getregn(const struct roff *r, const char *name, size_t len)
2291: {
2292: struct roffreg *reg;
1.65 schwarze 2293: int val;
2294:
2295: if ('.' == name[0] && 2 == len) {
2296: val = roff_getregro(name + 1);
2297: if (-1 != val)
2298: return (val);
2299: }
1.53 schwarze 2300:
2301: for (reg = r->regtab; reg; reg = reg->next)
2302: if (len == reg->key.sz &&
2303: 0 == strncmp(name, reg->key.p, len))
2304: return(reg->val);
1.41 schwarze 2305:
1.52 schwarze 2306: return(0);
1.41 schwarze 2307: }
2308:
1.52 schwarze 2309: static void
2310: roff_freereg(struct roffreg *reg)
1.41 schwarze 2311: {
1.52 schwarze 2312: struct roffreg *old_reg;
1.41 schwarze 2313:
1.52 schwarze 2314: while (NULL != reg) {
2315: free(reg->key.p);
2316: old_reg = reg;
2317: reg = reg->next;
2318: free(old_reg);
2319: }
1.41 schwarze 2320: }
1.7 schwarze 2321:
2322: static enum rofferr
1.6 schwarze 2323: roff_nr(ROFF_ARGS)
1.1 schwarze 2324: {
1.85 schwarze 2325: char *key, *val;
2326: size_t keysz;
1.37 schwarze 2327: int iv;
1.60 schwarze 2328: char sign;
1.6 schwarze 2329:
1.110 schwarze 2330: key = val = buf->buf + pos;
2331: if (*key == '\0')
1.85 schwarze 2332: return(ROFF_IGN);
2333:
2334: keysz = roff_getname(r, &val, ln, pos);
1.110 schwarze 2335: if (key[keysz] == '\\')
1.85 schwarze 2336: return(ROFF_IGN);
2337: key[keysz] = '\0';
1.6 schwarze 2338:
1.60 schwarze 2339: sign = *val;
1.110 schwarze 2340: if (sign == '+' || sign == '-')
1.60 schwarze 2341: val++;
2342:
1.133 schwarze 2343: if (roff_evalnum(r, ln, val, NULL, &iv, ROFFNUM_SCALE))
1.77 schwarze 2344: roff_setreg(r, key, iv, sign);
1.1 schwarze 2345:
1.76 schwarze 2346: return(ROFF_IGN);
2347: }
2348:
2349: static enum rofferr
2350: roff_rr(ROFF_ARGS)
2351: {
2352: struct roffreg *reg, **prev;
1.85 schwarze 2353: char *name, *cp;
2354: size_t namesz;
1.76 schwarze 2355:
1.110 schwarze 2356: name = cp = buf->buf + pos;
2357: if (*name == '\0')
1.85 schwarze 2358: return(ROFF_IGN);
2359: namesz = roff_getname(r, &cp, ln, pos);
2360: name[namesz] = '\0';
1.76 schwarze 2361:
2362: prev = &r->regtab;
2363: while (1) {
2364: reg = *prev;
1.110 schwarze 2365: if (reg == NULL || !strcmp(name, reg->key.p))
1.76 schwarze 2366: break;
2367: prev = ®->next;
2368: }
1.110 schwarze 2369: if (reg != NULL) {
1.76 schwarze 2370: *prev = reg->next;
2371: free(reg->key.p);
2372: free(reg);
2373: }
1.29 schwarze 2374: return(ROFF_IGN);
2375: }
2376:
2377: static enum rofferr
2378: roff_rm(ROFF_ARGS)
2379: {
2380: const char *name;
2381: char *cp;
1.85 schwarze 2382: size_t namesz;
1.29 schwarze 2383:
1.110 schwarze 2384: cp = buf->buf + pos;
2385: while (*cp != '\0') {
1.85 schwarze 2386: name = cp;
1.110 schwarze 2387: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.85 schwarze 2388: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.110 schwarze 2389: if (name[namesz] == '\\')
1.85 schwarze 2390: break;
1.29 schwarze 2391: }
1.51 schwarze 2392: return(ROFF_IGN);
2393: }
2394:
2395: static enum rofferr
2396: roff_it(ROFF_ARGS)
2397: {
2398: int iv;
2399:
2400: /* Parse the number of lines. */
1.133 schwarze 2401:
2402: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.95 schwarze 2403: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.110 schwarze 2404: ln, ppos, buf->buf + 1);
1.51 schwarze 2405: return(ROFF_IGN);
2406: }
2407:
1.134 schwarze 2408: while (isspace((unsigned char)buf->buf[pos]))
2409: pos++;
2410:
2411: /*
2412: * Arm the input line trap.
2413: * Special-casing "an-trap" is an ugly workaround to cope
2414: * with DocBook stupidly fiddling with man(7) internals.
2415: */
1.133 schwarze 2416:
1.51 schwarze 2417: roffit_lines = iv;
1.134 schwarze 2418: roffit_macro = mandoc_strdup(iv != 1 ||
2419: strcmp(buf->buf + pos, "an-trap") ?
2420: buf->buf + pos : "br");
1.2 schwarze 2421: return(ROFF_IGN);
1.47 schwarze 2422: }
2423:
2424: static enum rofferr
2425: roff_Dd(ROFF_ARGS)
2426: {
2427: const char *const *cp;
2428:
1.99 schwarze 2429: if ((r->options & (MPARSE_MDOC | MPARSE_QUICK)) == 0)
1.47 schwarze 2430: for (cp = __mdoc_reserved; *cp; cp++)
2431: roff_setstr(r, *cp, NULL, 0);
2432:
1.99 schwarze 2433: if (r->format == 0)
2434: r->format = MPARSE_MDOC;
2435:
1.47 schwarze 2436: return(ROFF_CONT);
2437: }
2438:
2439: static enum rofferr
2440: roff_TH(ROFF_ARGS)
2441: {
2442: const char *const *cp;
2443:
1.99 schwarze 2444: if ((r->options & MPARSE_QUICK) == 0)
1.47 schwarze 2445: for (cp = __man_reserved; *cp; cp++)
2446: roff_setstr(r, *cp, NULL, 0);
2447:
1.99 schwarze 2448: if (r->format == 0)
2449: r->format = MPARSE_MAN;
2450:
1.47 schwarze 2451: return(ROFF_CONT);
1.14 schwarze 2452: }
2453:
2454: static enum rofferr
1.27 schwarze 2455: roff_TE(ROFF_ARGS)
2456: {
2457:
2458: if (NULL == r->tbl)
1.94 schwarze 2459: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2460: ln, ppos, "TE");
1.130 schwarze 2461: else if ( ! tbl_end(&r->tbl)) {
2462: free(buf->buf);
2463: buf->buf = mandoc_strdup(".sp");
2464: buf->sz = 4;
2465: return(ROFF_REPARSE);
2466: }
1.27 schwarze 2467: return(ROFF_IGN);
2468: }
2469:
2470: static enum rofferr
2471: roff_T_(ROFF_ARGS)
2472: {
2473:
2474: if (NULL == r->tbl)
1.94 schwarze 2475: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2476: ln, ppos, "T&");
1.27 schwarze 2477: else
2478: tbl_restart(ppos, ln, r->tbl);
2479:
2480: return(ROFF_IGN);
2481: }
2482:
1.102 schwarze 2483: /*
2484: * Handle in-line equation delimiters.
2485: */
2486: static enum rofferr
1.110 schwarze 2487: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.41 schwarze 2488: {
1.105 schwarze 2489: char *cp1, *cp2;
2490: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.41 schwarze 2491:
1.102 schwarze 2492: /*
2493: * Outside equations, look for an opening delimiter.
2494: * If we are inside an equation, we already know it is
2495: * in-line, or this function wouldn't have been called;
2496: * so look for a closing delimiter.
2497: */
2498:
1.110 schwarze 2499: cp1 = buf->buf + pos;
1.102 schwarze 2500: cp2 = strchr(cp1, r->eqn == NULL ?
2501: r->last_eqn->odelim : r->last_eqn->cdelim);
2502: if (cp2 == NULL)
2503: return(ROFF_CONT);
2504:
1.105 schwarze 2505: *cp2++ = '\0';
2506: bef_pr = bef_nl = aft_nl = aft_pr = "";
2507:
2508: /* Handle preceding text, protecting whitespace. */
2509:
1.110 schwarze 2510: if (*buf->buf != '\0') {
1.105 schwarze 2511: if (r->eqn == NULL)
2512: bef_pr = "\\&";
2513: bef_nl = "\n";
2514: }
2515:
2516: /*
2517: * Prepare replacing the delimiter with an equation macro
2518: * and drop leading white space from the equation.
2519: */
1.102 schwarze 2520:
1.105 schwarze 2521: if (r->eqn == NULL) {
2522: while (*cp2 == ' ')
2523: cp2++;
2524: mac = ".EQ";
2525: } else
2526: mac = ".EN";
2527:
2528: /* Handle following text, protecting whitespace. */
2529:
2530: if (*cp2 != '\0') {
2531: aft_nl = "\n";
2532: if (r->eqn != NULL)
2533: aft_pr = "\\&";
2534: }
2535:
2536: /* Do the actual replacement. */
2537:
1.110 schwarze 2538: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.105 schwarze 2539: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.110 schwarze 2540: free(buf->buf);
2541: buf->buf = cp1;
1.102 schwarze 2542:
2543: /* Toggle the in-line state of the eqn subsystem. */
2544:
2545: r->eqn_inline = r->eqn == NULL;
2546: return(ROFF_REPARSE);
1.41 schwarze 2547: }
2548:
1.107 schwarze 2549: static enum rofferr
2550: roff_EQ(ROFF_ARGS)
1.32 schwarze 2551: {
1.41 schwarze 2552: struct eqn_node *e;
1.32 schwarze 2553:
1.110 schwarze 2554: assert(r->eqn == NULL);
1.107 schwarze 2555: e = eqn_alloc(ppos, ln, r->parse);
1.32 schwarze 2556:
1.102 schwarze 2557: if (r->last_eqn) {
1.32 schwarze 2558: r->last_eqn->next = e;
1.102 schwarze 2559: e->delim = r->last_eqn->delim;
2560: e->odelim = r->last_eqn->odelim;
2561: e->cdelim = r->last_eqn->cdelim;
2562: } else
1.32 schwarze 2563: r->first_eqn = r->last_eqn = e;
2564:
2565: r->eqn = r->last_eqn = e;
1.41 schwarze 2566:
1.110 schwarze 2567: if (buf->buf[pos] != '\0')
1.107 schwarze 2568: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 2569: ".EQ %s", buf->buf + pos);
1.41 schwarze 2570:
1.32 schwarze 2571: return(ROFF_IGN);
2572: }
2573:
2574: static enum rofferr
2575: roff_EN(ROFF_ARGS)
2576: {
2577:
1.94 schwarze 2578: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
1.32 schwarze 2579: return(ROFF_IGN);
2580: }
2581:
2582: static enum rofferr
1.27 schwarze 2583: roff_TS(ROFF_ARGS)
2584: {
1.49 schwarze 2585: struct tbl_node *tbl;
1.27 schwarze 2586:
2587: if (r->tbl) {
1.94 schwarze 2588: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
2589: ln, ppos, "TS breaks TS");
1.41 schwarze 2590: tbl_end(&r->tbl);
1.27 schwarze 2591: }
2592:
1.49 schwarze 2593: tbl = tbl_alloc(ppos, ln, r->parse);
1.27 schwarze 2594:
2595: if (r->last_tbl)
1.49 schwarze 2596: r->last_tbl->next = tbl;
1.27 schwarze 2597: else
1.49 schwarze 2598: r->first_tbl = r->last_tbl = tbl;
1.27 schwarze 2599:
1.49 schwarze 2600: r->tbl = r->last_tbl = tbl;
1.27 schwarze 2601: return(ROFF_IGN);
1.123 schwarze 2602: }
2603:
2604: static enum rofferr
2605: roff_brp(ROFF_ARGS)
2606: {
2607:
2608: buf->buf[pos - 1] = '\0';
2609: return(ROFF_CONT);
1.27 schwarze 2610: }
2611:
2612: static enum rofferr
1.48 schwarze 2613: roff_cc(ROFF_ARGS)
2614: {
2615: const char *p;
2616:
1.110 schwarze 2617: p = buf->buf + pos;
1.48 schwarze 2618:
1.110 schwarze 2619: if (*p == '\0' || (r->control = *p++) == '.')
1.48 schwarze 2620: r->control = 0;
2621:
1.110 schwarze 2622: if (*p != '\0')
1.132 schwarze 2623: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
2624: ln, p - buf->buf, "cc ... %s", p);
1.48 schwarze 2625:
2626: return(ROFF_IGN);
2627: }
2628:
2629: static enum rofferr
1.42 schwarze 2630: roff_tr(ROFF_ARGS)
2631: {
2632: const char *p, *first, *second;
2633: size_t fsz, ssz;
2634: enum mandoc_esc esc;
2635:
1.110 schwarze 2636: p = buf->buf + pos;
1.42 schwarze 2637:
1.110 schwarze 2638: if (*p == '\0') {
1.132 schwarze 2639: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.42 schwarze 2640: return(ROFF_IGN);
2641: }
2642:
1.110 schwarze 2643: while (*p != '\0') {
1.42 schwarze 2644: fsz = ssz = 1;
2645:
2646: first = p++;
1.110 schwarze 2647: if (*first == '\\') {
1.42 schwarze 2648: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 2649: if (esc == ESCAPE_ERROR) {
1.92 schwarze 2650: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 2651: ln, (int)(p - buf->buf), first);
1.42 schwarze 2652: return(ROFF_IGN);
2653: }
2654: fsz = (size_t)(p - first);
2655: }
2656:
2657: second = p++;
1.110 schwarze 2658: if (*second == '\\') {
1.42 schwarze 2659: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 2660: if (esc == ESCAPE_ERROR) {
1.92 schwarze 2661: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 2662: ln, (int)(p - buf->buf), second);
1.42 schwarze 2663: return(ROFF_IGN);
2664: }
2665: ssz = (size_t)(p - second);
1.110 schwarze 2666: } else if (*second == '\0') {
1.132 schwarze 2667: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
2668: ln, first - buf->buf, "tr %s", first);
1.42 schwarze 2669: second = " ";
2670: p--;
2671: }
2672:
2673: if (fsz > 1) {
1.80 schwarze 2674: roff_setstrn(&r->xmbtab, first, fsz,
2675: second, ssz, 0);
1.42 schwarze 2676: continue;
2677: }
2678:
1.110 schwarze 2679: if (r->xtab == NULL)
1.80 schwarze 2680: r->xtab = mandoc_calloc(128,
2681: sizeof(struct roffstr));
1.42 schwarze 2682:
2683: free(r->xtab[(int)*first].p);
2684: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
2685: r->xtab[(int)*first].sz = ssz;
2686: }
2687:
2688: return(ROFF_IGN);
2689: }
2690:
2691: static enum rofferr
1.14 schwarze 2692: roff_so(ROFF_ARGS)
2693: {
1.121 schwarze 2694: char *name, *cp;
1.15 schwarze 2695:
1.110 schwarze 2696: name = buf->buf + pos;
1.97 schwarze 2697: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.14 schwarze 2698:
1.22 schwarze 2699: /*
2700: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
2701: * opening anything that's not in our cwd or anything beneath
2702: * it. Thus, explicitly disallow traversing up the file-system
2703: * or using absolute paths.
2704: */
2705:
1.110 schwarze 2706: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.83 schwarze 2707: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
2708: ".so %s", name);
1.121 schwarze 2709: buf->sz = mandoc_asprintf(&cp,
2710: ".sp\nSee the file %s.\n.sp", name) + 1;
2711: free(buf->buf);
2712: buf->buf = cp;
2713: *offs = 0;
2714: return(ROFF_REPARSE);
1.14 schwarze 2715: }
2716:
2717: *offs = pos;
2718: return(ROFF_SO);
1.7 schwarze 2719: }
2720:
1.16 schwarze 2721: static enum rofferr
2722: roff_userdef(ROFF_ARGS)
1.12 schwarze 2723: {
1.135 schwarze 2724: const char *arg[9], *ap;
1.16 schwarze 2725: char *cp, *n1, *n2;
1.25 schwarze 2726: int i;
1.135 schwarze 2727: size_t asz, rsz;
1.12 schwarze 2728:
1.16 schwarze 2729: /*
2730: * Collect pointers to macro argument strings
1.61 schwarze 2731: * and NUL-terminate them.
1.16 schwarze 2732: */
1.135 schwarze 2733:
1.110 schwarze 2734: cp = buf->buf + pos;
1.25 schwarze 2735: for (i = 0; i < 9; i++)
1.110 schwarze 2736: arg[i] = *cp == '\0' ? "" :
1.35 schwarze 2737: mandoc_getarg(r->parse, &cp, ln, &pos);
1.16 schwarze 2738:
2739: /*
2740: * Expand macro arguments.
1.12 schwarze 2741: */
1.135 schwarze 2742:
2743: buf->sz = strlen(r->current_string) + 1;
2744: n1 = cp = mandoc_malloc(buf->sz);
2745: memcpy(n1, r->current_string, buf->sz);
2746: while (*cp != '\0') {
2747:
2748: /* Scan ahead for the next argument invocation. */
2749:
2750: if (*cp++ != '\\')
2751: continue;
2752: if (*cp++ != '$')
2753: continue;
2754: i = *cp - '1';
2755: if (0 > i || 8 < i)
1.16 schwarze 2756: continue;
1.135 schwarze 2757: cp -= 2;
2758:
2759: /*
2760: * Determine the size of the expanded argument,
2761: * taking escaping of quotes into account.
2762: */
2763:
2764: asz = 0;
2765: for (ap = arg[i]; *ap != '\0'; ap++) {
2766: asz++;
2767: if (*ap == '"')
2768: asz += 3;
2769: }
2770: if (asz != 3) {
2771:
2772: /*
2773: * Determine the size of the rest of the
2774: * unexpanded macro, including the NUL.
2775: */
2776:
2777: rsz = buf->sz - (cp - n1) - 3;
2778:
2779: /*
2780: * When shrinking, move before
2781: * releasing the storage.
2782: */
2783:
2784: if (asz < 3)
2785: memmove(cp + asz, cp + 3, rsz);
2786:
2787: /*
2788: * Resize the storage for the macro
2789: * and readjust the parse pointer.
2790: */
2791:
2792: buf->sz += asz - 3;
2793: n2 = mandoc_realloc(n1, buf->sz);
2794: cp = n2 + (cp - n1);
2795: n1 = n2;
2796:
2797: /*
2798: * When growing, make room
2799: * for the expanded argument.
2800: */
2801:
2802: if (asz > 3)
2803: memmove(cp + asz, cp + 3, rsz);
2804: }
2805:
2806: /* Copy the expanded argument, escaping quotes. */
2807:
2808: n2 = cp;
2809: for (ap = arg[i]; *ap != '\0'; ap++) {
2810: if (*ap == '"') {
2811: memcpy(n2, "\\(dq", 4);
2812: n2 += 4;
2813: } else
2814: *n2++ = *ap;
1.16 schwarze 2815: }
1.12 schwarze 2816: }
2817:
1.16 schwarze 2818: /*
2819: * Replace the macro invocation
2820: * by the expanded macro.
2821: */
1.135 schwarze 2822:
1.110 schwarze 2823: free(buf->buf);
2824: buf->buf = n1;
1.120 schwarze 2825: *offs = 0;
1.16 schwarze 2826:
1.110 schwarze 2827: return(buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
1.16 schwarze 2828: ROFF_REPARSE : ROFF_APPEND);
1.12 schwarze 2829: }
1.28 schwarze 2830:
1.85 schwarze 2831: static size_t
1.28 schwarze 2832: roff_getname(struct roff *r, char **cpp, int ln, int pos)
2833: {
2834: char *name, *cp;
1.85 schwarze 2835: size_t namesz;
1.28 schwarze 2836:
2837: name = *cpp;
2838: if ('\0' == *name)
1.85 schwarze 2839: return(0);
1.28 schwarze 2840:
1.85 schwarze 2841: /* Read until end of name and terminate it with NUL. */
2842: for (cp = name; 1; cp++) {
2843: if ('\0' == *cp || ' ' == *cp) {
2844: namesz = cp - name;
2845: break;
2846: }
1.28 schwarze 2847: if ('\\' != *cp)
2848: continue;
1.88 schwarze 2849: namesz = cp - name;
2850: if ('{' == cp[1] || '}' == cp[1])
2851: break;
1.28 schwarze 2852: cp++;
2853: if ('\\' == *cp)
2854: continue;
1.97 schwarze 2855: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
2856: "%.*s", (int)(cp - name + 1), name);
1.85 schwarze 2857: mandoc_escape((const char **)&cp, NULL, NULL);
2858: break;
1.28 schwarze 2859: }
2860:
2861: /* Read past spaces. */
2862: while (' ' == *cp)
2863: cp++;
2864:
2865: *cpp = cp;
1.85 schwarze 2866: return(namesz);
1.28 schwarze 2867: }
2868:
1.16 schwarze 2869: /*
2870: * Store *string into the user-defined string called *name.
2871: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.66 schwarze 2872: * append == 0: replace mode
2873: * append == 1: single-line append mode
2874: * append == 2: multiline append mode, append '\n' after each call
1.16 schwarze 2875: */
1.8 schwarze 2876: static void
1.16 schwarze 2877: roff_setstr(struct roff *r, const char *name, const char *string,
1.66 schwarze 2878: int append)
1.7 schwarze 2879: {
1.42 schwarze 2880:
2881: roff_setstrn(&r->strtab, name, strlen(name), string,
1.80 schwarze 2882: string ? strlen(string) : 0, append);
1.42 schwarze 2883: }
2884:
2885: static void
2886: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.66 schwarze 2887: const char *string, size_t stringsz, int append)
1.42 schwarze 2888: {
2889: struct roffkv *n;
2890: char *c;
2891: int i;
2892: size_t oldch, newch;
1.7 schwarze 2893:
1.16 schwarze 2894: /* Search for an existing string with the same name. */
1.42 schwarze 2895: n = *r;
2896:
1.84 schwarze 2897: while (n && (namesz != n->key.sz ||
2898: strncmp(n->key.p, name, namesz)))
1.7 schwarze 2899: n = n->next;
1.8 schwarze 2900:
2901: if (NULL == n) {
1.16 schwarze 2902: /* Create a new string table entry. */
1.42 schwarze 2903: n = mandoc_malloc(sizeof(struct roffkv));
2904: n->key.p = mandoc_strndup(name, namesz);
2905: n->key.sz = namesz;
2906: n->val.p = NULL;
2907: n->val.sz = 0;
2908: n->next = *r;
2909: *r = n;
1.66 schwarze 2910: } else if (0 == append) {
1.42 schwarze 2911: free(n->val.p);
2912: n->val.p = NULL;
2913: n->val.sz = 0;
1.16 schwarze 2914: }
2915:
2916: if (NULL == string)
2917: return;
2918:
2919: /*
2920: * One additional byte for the '\n' in multiline mode,
2921: * and one for the terminating '\0'.
2922: */
1.66 schwarze 2923: newch = stringsz + (1 < append ? 2u : 1u);
1.42 schwarze 2924:
2925: if (NULL == n->val.p) {
2926: n->val.p = mandoc_malloc(newch);
2927: *n->val.p = '\0';
1.16 schwarze 2928: oldch = 0;
2929: } else {
1.42 schwarze 2930: oldch = n->val.sz;
2931: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.16 schwarze 2932: }
2933:
2934: /* Skip existing content in the destination buffer. */
1.42 schwarze 2935: c = n->val.p + (int)oldch;
1.16 schwarze 2936:
2937: /* Append new content to the destination buffer. */
1.42 schwarze 2938: i = 0;
2939: while (i < (int)stringsz) {
1.16 schwarze 2940: /*
2941: * Rudimentary roff copy mode:
2942: * Handle escaped backslashes.
2943: */
1.42 schwarze 2944: if ('\\' == string[i] && '\\' == string[i + 1])
2945: i++;
2946: *c++ = string[i++];
1.16 schwarze 2947: }
1.8 schwarze 2948:
1.16 schwarze 2949: /* Append terminating bytes. */
1.66 schwarze 2950: if (1 < append)
1.16 schwarze 2951: *c++ = '\n';
1.42 schwarze 2952:
1.16 schwarze 2953: *c = '\0';
1.42 schwarze 2954: n->val.sz = (int)(c - n->val.p);
1.7 schwarze 2955: }
2956:
1.8 schwarze 2957: static const char *
2958: roff_getstrn(const struct roff *r, const char *name, size_t len)
1.7 schwarze 2959: {
1.42 schwarze 2960: const struct roffkv *n;
1.64 schwarze 2961: int i;
1.7 schwarze 2962:
1.42 schwarze 2963: for (n = r->strtab; n; n = n->next)
1.80 schwarze 2964: if (0 == strncmp(name, n->key.p, len) &&
2965: '\0' == n->key.p[(int)len])
1.42 schwarze 2966: return(n->val.p);
1.64 schwarze 2967:
2968: for (i = 0; i < PREDEFS_MAX; i++)
2969: if (0 == strncmp(name, predefs[i].name, len) &&
2970: '\0' == predefs[i].name[(int)len])
2971: return(predefs[i].str);
1.8 schwarze 2972:
1.42 schwarze 2973: return(NULL);
1.7 schwarze 2974: }
2975:
1.8 schwarze 2976: static void
1.42 schwarze 2977: roff_freestr(struct roffkv *r)
1.7 schwarze 2978: {
1.42 schwarze 2979: struct roffkv *n, *nn;
1.7 schwarze 2980:
1.42 schwarze 2981: for (n = r; n; n = nn) {
2982: free(n->key.p);
2983: free(n->val.p);
1.7 schwarze 2984: nn = n->next;
2985: free(n);
2986: }
1.27 schwarze 2987: }
2988:
2989: const struct tbl_span *
2990: roff_span(const struct roff *r)
2991: {
1.80 schwarze 2992:
1.27 schwarze 2993: return(r->tbl ? tbl_span(r->tbl) : NULL);
1.32 schwarze 2994: }
2995:
2996: const struct eqn *
2997: roff_eqn(const struct roff *r)
2998: {
1.80 schwarze 2999:
1.32 schwarze 3000: return(r->last_eqn ? &r->last_eqn->eqn : NULL);
1.42 schwarze 3001: }
3002:
3003: /*
3004: * Duplicate an input string, making the appropriate character
3005: * conversations (as stipulated by `tr') along the way.
3006: * Returns a heap-allocated string with all the replacements made.
3007: */
3008: char *
3009: roff_strdup(const struct roff *r, const char *p)
3010: {
3011: const struct roffkv *cp;
3012: char *res;
3013: const char *pp;
3014: size_t ssz, sz;
3015: enum mandoc_esc esc;
3016:
3017: if (NULL == r->xmbtab && NULL == r->xtab)
3018: return(mandoc_strdup(p));
3019: else if ('\0' == *p)
3020: return(mandoc_strdup(""));
3021:
3022: /*
3023: * Step through each character looking for term matches
3024: * (remember that a `tr' can be invoked with an escape, which is
3025: * a glyph but the escape is multi-character).
3026: * We only do this if the character hash has been initialised
3027: * and the string is >0 length.
3028: */
3029:
3030: res = NULL;
3031: ssz = 0;
3032:
3033: while ('\0' != *p) {
3034: if ('\\' != *p && r->xtab && r->xtab[(int)*p].p) {
3035: sz = r->xtab[(int)*p].sz;
3036: res = mandoc_realloc(res, ssz + sz + 1);
3037: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3038: ssz += sz;
3039: p++;
3040: continue;
3041: } else if ('\\' != *p) {
3042: res = mandoc_realloc(res, ssz + 2);
3043: res[ssz++] = *p++;
3044: continue;
3045: }
3046:
3047: /* Search for term matches. */
3048: for (cp = r->xmbtab; cp; cp = cp->next)
3049: if (0 == strncmp(p, cp->key.p, cp->key.sz))
3050: break;
3051:
3052: if (NULL != cp) {
3053: /*
3054: * A match has been found.
3055: * Append the match to the array and move
3056: * forward by its keysize.
3057: */
1.80 schwarze 3058: res = mandoc_realloc(res,
3059: ssz + cp->val.sz + 1);
1.42 schwarze 3060: memcpy(res + ssz, cp->val.p, cp->val.sz);
3061: ssz += cp->val.sz;
3062: p += (int)cp->key.sz;
3063: continue;
3064: }
3065:
3066: /*
3067: * Handle escapes carefully: we need to copy
3068: * over just the escape itself, or else we might
3069: * do replacements within the escape itself.
3070: * Make sure to pass along the bogus string.
3071: */
3072: pp = p++;
3073: esc = mandoc_escape(&p, NULL, NULL);
3074: if (ESCAPE_ERROR == esc) {
3075: sz = strlen(pp);
3076: res = mandoc_realloc(res, ssz + sz + 1);
3077: memcpy(res + ssz, pp, sz);
3078: break;
3079: }
1.80 schwarze 3080: /*
3081: * We bail out on bad escapes.
1.42 schwarze 3082: * No need to warn: we already did so when
3083: * roff_res() was called.
3084: */
3085: sz = (int)(p - pp);
3086: res = mandoc_realloc(res, ssz + sz + 1);
3087: memcpy(res + ssz, pp, sz);
3088: ssz += sz;
3089: }
3090:
3091: res[(int)ssz] = '\0';
3092: return(res);
1.99 schwarze 3093: }
3094:
3095: int
3096: roff_getformat(const struct roff *r)
3097: {
3098:
3099: return(r->format);
1.48 schwarze 3100: }
3101:
3102: /*
1.80 schwarze 3103: * Find out whether a line is a macro line or not.
1.48 schwarze 3104: * If it is, adjust the current position and return one; if it isn't,
3105: * return zero and don't change the current position.
3106: * If the control character has been set with `.cc', then let that grain
3107: * precedence.
3108: * This is slighly contrary to groff, where using the non-breaking
3109: * control character when `cc' has been invoked will cause the
3110: * non-breaking macro contents to be printed verbatim.
3111: */
3112: int
3113: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
3114: {
3115: int pos;
3116:
3117: pos = *ppos;
3118:
3119: if (0 != r->control && cp[pos] == r->control)
3120: pos++;
3121: else if (0 != r->control)
3122: return(0);
3123: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
3124: pos += 2;
3125: else if ('.' == cp[pos] || '\'' == cp[pos])
3126: pos++;
3127: else
3128: return(0);
3129:
3130: while (' ' == cp[pos] || '\t' == cp[pos])
3131: pos++;
3132:
3133: *ppos = pos;
3134: return(1);
1.1 schwarze 3135: }
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