Annotation of src/usr.bin/mandoc/roff.c, Revision 1.164
1.164 ! schwarze 1: /* $OpenBSD: roff.c,v 1.163 2017/03/03 13:55:06 schwarze Exp $ */
1.1 schwarze 2: /*
1.139 schwarze 3: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.159 schwarze 4: * Copyright (c) 2010-2015, 2017 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"
1.138 schwarze 31: #include "roff_int.h"
1.27 schwarze 32: #include "libroff.h"
1.2 schwarze 33:
1.43 schwarze 34: /* Maximum number of string expansions per line, to break infinite loops. */
35: #define EXPAND_LIMIT 1000
36:
1.138 schwarze 37: /* --- data types --------------------------------------------------------- */
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 */
1.1 schwarze 314: struct roffnode *last; /* leaf of stack */
1.96 schwarze 315: int *rstack; /* stack of inverted `ie' values */
1.52 schwarze 316: struct roffreg *regtab; /* number registers */
1.42 schwarze 317: struct roffkv *strtab; /* user-defined strings & macros */
318: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
319: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.16 schwarze 320: const char *current_string; /* value of last called user macro */
1.27 schwarze 321: struct tbl_node *first_tbl; /* first table parsed */
322: struct tbl_node *last_tbl; /* last table parsed */
323: struct tbl_node *tbl; /* current table being parsed */
1.32 schwarze 324: struct eqn_node *last_eqn; /* last equation parsed */
325: struct eqn_node *first_eqn; /* first equation parsed */
326: struct eqn_node *eqn; /* current equation being parsed */
1.102 schwarze 327: int eqn_inline; /* current equation is inline */
1.96 schwarze 328: int options; /* parse options */
329: int rstacksz; /* current size limit of rstack */
330: int rstackpos; /* position in rstack */
1.99 schwarze 331: int format; /* current file in mdoc or man format */
1.145 schwarze 332: int argc; /* number of args of the last macro */
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:
1.138 schwarze 375: /* --- function prototypes ------------------------------------------------ */
376:
1.42 schwarze 377: static enum rofft roffhash_find(const char *, size_t);
378: static void roffhash_init(void);
379: static void roffnode_cleanscope(struct roff *);
380: static void roffnode_pop(struct roff *);
381: static void roffnode_push(struct roff *, enum rofft,
382: const char *, int, int);
1.2 schwarze 383: static enum rofferr roff_block(ROFF_ARGS);
384: static enum rofferr roff_block_text(ROFF_ARGS);
385: static enum rofferr roff_block_sub(ROFF_ARGS);
1.123 schwarze 386: static enum rofferr roff_brp(ROFF_ARGS);
1.2 schwarze 387: static enum rofferr roff_cblock(ROFF_ARGS);
1.48 schwarze 388: static enum rofferr roff_cc(ROFF_ARGS);
1.68 schwarze 389: static void roff_ccond(struct roff *, int, int);
1.2 schwarze 390: static enum rofferr roff_cond(ROFF_ARGS);
391: static enum rofferr roff_cond_text(ROFF_ARGS);
392: static enum rofferr roff_cond_sub(ROFF_ARGS);
1.7 schwarze 393: static enum rofferr roff_ds(ROFF_ARGS);
1.110 schwarze 394: static enum rofferr roff_eqndelim(struct roff *, struct buf *, int);
1.143 schwarze 395: static int roff_evalcond(struct roff *r, int, char *, int *);
1.106 schwarze 396: static int roff_evalnum(struct roff *, int,
397: const char *, int *, int *, int);
398: static int roff_evalpar(struct roff *, int,
1.133 schwarze 399: const char *, int *, int *, int);
1.71 schwarze 400: static int roff_evalstrcond(const char *, int *);
1.42 schwarze 401: static void roff_free1(struct roff *);
1.52 schwarze 402: static void roff_freereg(struct roffreg *);
1.42 schwarze 403: static void roff_freestr(struct roffkv *);
1.85 schwarze 404: static size_t roff_getname(struct roff *, char **, int, int);
1.133 schwarze 405: static int roff_getnum(const char *, int *, int *, int);
1.56 schwarze 406: static int roff_getop(const char *, int *, char *);
1.53 schwarze 407: static int roff_getregn(const struct roff *,
408: const char *, size_t);
1.145 schwarze 409: static int roff_getregro(const struct roff *,
410: const char *name);
1.80 schwarze 411: static const char *roff_getstrn(const struct roff *,
1.8 schwarze 412: const char *, size_t);
1.143 schwarze 413: static int roff_hasregn(const struct roff *,
414: const char *, size_t);
1.123 schwarze 415: static enum rofferr roff_insec(ROFF_ARGS);
1.51 schwarze 416: static enum rofferr roff_it(ROFF_ARGS);
1.21 schwarze 417: static enum rofferr roff_line_ignore(ROFF_ARGS);
1.137 schwarze 418: static void roff_man_alloc1(struct roff_man *);
419: static void roff_man_free1(struct roff_man *);
1.6 schwarze 420: static enum rofferr roff_nr(ROFF_ARGS);
1.87 schwarze 421: static enum rofft roff_parse(struct roff *, char *, int *,
422: int, int);
1.110 schwarze 423: static enum rofferr roff_parsetext(struct buf *, int, int *);
424: static enum rofferr roff_res(struct roff *, struct buf *, int, int);
1.29 schwarze 425: static enum rofferr roff_rm(ROFF_ARGS);
1.76 schwarze 426: static enum rofferr roff_rr(ROFF_ARGS);
1.8 schwarze 427: static void roff_setstr(struct roff *,
1.16 schwarze 428: const char *, const char *, int);
1.80 schwarze 429: static void roff_setstrn(struct roffkv **, const char *,
1.42 schwarze 430: size_t, const char *, size_t, int);
1.14 schwarze 431: static enum rofferr roff_so(ROFF_ARGS);
1.42 schwarze 432: static enum rofferr roff_tr(ROFF_ARGS);
1.47 schwarze 433: static enum rofferr roff_Dd(ROFF_ARGS);
434: static enum rofferr roff_TH(ROFF_ARGS);
1.27 schwarze 435: static enum rofferr roff_TE(ROFF_ARGS);
436: static enum rofferr roff_TS(ROFF_ARGS);
1.32 schwarze 437: static enum rofferr roff_EQ(ROFF_ARGS);
438: static enum rofferr roff_EN(ROFF_ARGS);
1.27 schwarze 439: static enum rofferr roff_T_(ROFF_ARGS);
1.123 schwarze 440: static enum rofferr roff_unsupp(ROFF_ARGS);
1.16 schwarze 441: static enum rofferr roff_userdef(ROFF_ARGS);
1.1 schwarze 442:
1.138 schwarze 443: /* --- constant data ------------------------------------------------------ */
444:
1.42 schwarze 445: /* See roffhash_find() */
1.3 schwarze 446:
447: #define ASCII_HI 126
448: #define ASCII_LO 33
449: #define HASHWIDTH (ASCII_HI - ASCII_LO + 1)
450:
1.133 schwarze 451: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
452: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
453:
1.3 schwarze 454: static struct roffmac *hash[HASHWIDTH];
455:
456: static struct roffmac roffs[ROFF_MAX] = {
1.123 schwarze 457: { "ab", roff_unsupp, NULL, NULL, 0, NULL },
1.21 schwarze 458: { "ad", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 459: { "af", roff_line_ignore, NULL, NULL, 0, NULL },
460: { "aln", roff_unsupp, NULL, NULL, 0, NULL },
461: { "als", roff_unsupp, NULL, NULL, 0, NULL },
1.3 schwarze 462: { "am", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.123 schwarze 463: { "am1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.3 schwarze 464: { "ami", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.123 schwarze 465: { "ami1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.66 schwarze 466: { "as", roff_ds, NULL, NULL, 0, NULL },
1.123 schwarze 467: { "as1", roff_ds, NULL, NULL, 0, NULL },
468: { "asciify", roff_unsupp, NULL, NULL, 0, NULL },
469: { "backtrace", roff_line_ignore, NULL, NULL, 0, NULL },
470: { "bd", roff_line_ignore, NULL, NULL, 0, NULL },
471: { "bleedat", roff_line_ignore, NULL, NULL, 0, NULL },
472: { "blm", roff_unsupp, NULL, NULL, 0, NULL },
473: { "box", roff_unsupp, NULL, NULL, 0, NULL },
474: { "boxa", roff_unsupp, NULL, NULL, 0, NULL },
475: { "bp", roff_line_ignore, NULL, NULL, 0, NULL },
476: { "BP", roff_unsupp, NULL, NULL, 0, NULL },
477: { "break", roff_unsupp, NULL, NULL, 0, NULL },
478: { "breakchar", roff_line_ignore, NULL, NULL, 0, NULL },
479: { "brnl", roff_line_ignore, NULL, NULL, 0, NULL },
480: { "brp", roff_brp, NULL, NULL, 0, NULL },
481: { "brpnl", roff_line_ignore, NULL, NULL, 0, NULL },
482: { "c2", roff_unsupp, NULL, NULL, 0, NULL },
1.48 schwarze 483: { "cc", roff_cc, NULL, NULL, 0, NULL },
1.67 schwarze 484: { "ce", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 485: { "cf", roff_insec, NULL, NULL, 0, NULL },
486: { "cflags", roff_line_ignore, NULL, NULL, 0, NULL },
487: { "ch", roff_line_ignore, NULL, NULL, 0, NULL },
488: { "char", roff_unsupp, NULL, NULL, 0, NULL },
489: { "chop", roff_unsupp, NULL, NULL, 0, NULL },
490: { "class", roff_line_ignore, NULL, NULL, 0, NULL },
491: { "close", roff_insec, NULL, NULL, 0, NULL },
492: { "CL", roff_unsupp, NULL, NULL, 0, NULL },
493: { "color", roff_line_ignore, NULL, NULL, 0, NULL },
494: { "composite", roff_unsupp, NULL, NULL, 0, NULL },
495: { "continue", roff_unsupp, NULL, NULL, 0, NULL },
496: { "cp", roff_line_ignore, NULL, NULL, 0, NULL },
497: { "cropat", roff_line_ignore, NULL, NULL, 0, NULL },
498: { "cs", roff_line_ignore, NULL, NULL, 0, NULL },
499: { "cu", roff_line_ignore, NULL, NULL, 0, NULL },
500: { "da", roff_unsupp, NULL, NULL, 0, NULL },
501: { "dch", roff_unsupp, NULL, NULL, 0, NULL },
502: { "Dd", roff_Dd, NULL, NULL, 0, NULL },
1.3 schwarze 503: { "de", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.123 schwarze 504: { "de1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
505: { "defcolor", roff_line_ignore, NULL, NULL, 0, NULL },
1.3 schwarze 506: { "dei", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.123 schwarze 507: { "dei1", roff_block, roff_block_text, roff_block_sub, 0, NULL },
508: { "device", roff_unsupp, NULL, NULL, 0, NULL },
509: { "devicem", roff_unsupp, NULL, NULL, 0, NULL },
510: { "di", roff_unsupp, NULL, NULL, 0, NULL },
511: { "do", roff_unsupp, NULL, NULL, 0, NULL },
1.7 schwarze 512: { "ds", roff_ds, NULL, NULL, 0, NULL },
1.123 schwarze 513: { "ds1", roff_ds, NULL, NULL, 0, NULL },
514: { "dwh", roff_unsupp, NULL, NULL, 0, NULL },
515: { "dt", roff_unsupp, NULL, NULL, 0, NULL },
516: { "ec", roff_unsupp, NULL, NULL, 0, NULL },
517: { "ecr", roff_unsupp, NULL, NULL, 0, NULL },
518: { "ecs", roff_unsupp, NULL, NULL, 0, NULL },
1.3 schwarze 519: { "el", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
1.123 schwarze 520: { "em", roff_unsupp, NULL, NULL, 0, NULL },
521: { "EN", roff_EN, NULL, NULL, 0, NULL },
522: { "eo", roff_unsupp, NULL, NULL, 0, NULL },
523: { "EP", roff_unsupp, NULL, NULL, 0, NULL },
524: { "EQ", roff_EQ, NULL, NULL, 0, NULL },
525: { "errprint", roff_line_ignore, NULL, NULL, 0, NULL },
526: { "ev", roff_unsupp, NULL, NULL, 0, NULL },
527: { "evc", roff_unsupp, NULL, NULL, 0, NULL },
528: { "ex", roff_unsupp, NULL, NULL, 0, NULL },
529: { "fallback", roff_line_ignore, NULL, NULL, 0, NULL },
1.58 schwarze 530: { "fam", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 531: { "fc", roff_unsupp, NULL, NULL, 0, NULL },
532: { "fchar", roff_unsupp, NULL, NULL, 0, NULL },
533: { "fcolor", roff_line_ignore, NULL, NULL, 0, NULL },
534: { "fdeferlig", roff_line_ignore, NULL, NULL, 0, NULL },
535: { "feature", roff_line_ignore, NULL, NULL, 0, NULL },
536: { "fkern", roff_line_ignore, NULL, NULL, 0, NULL },
537: { "fl", roff_line_ignore, NULL, NULL, 0, NULL },
538: { "flig", roff_line_ignore, NULL, NULL, 0, NULL },
539: { "fp", roff_line_ignore, NULL, NULL, 0, NULL },
540: { "fps", roff_line_ignore, NULL, NULL, 0, NULL },
541: { "fschar", roff_unsupp, NULL, NULL, 0, NULL },
542: { "fspacewidth", roff_line_ignore, NULL, NULL, 0, NULL },
543: { "fspecial", roff_line_ignore, NULL, NULL, 0, NULL },
544: { "ftr", roff_line_ignore, NULL, NULL, 0, NULL },
545: { "fzoom", roff_line_ignore, NULL, NULL, 0, NULL },
546: { "gcolor", roff_line_ignore, NULL, NULL, 0, NULL },
547: { "hc", roff_line_ignore, NULL, NULL, 0, NULL },
548: { "hcode", roff_line_ignore, NULL, NULL, 0, NULL },
549: { "hidechar", roff_line_ignore, NULL, NULL, 0, NULL },
550: { "hla", roff_line_ignore, NULL, NULL, 0, NULL },
551: { "hlm", roff_line_ignore, NULL, NULL, 0, NULL },
552: { "hpf", roff_line_ignore, NULL, NULL, 0, NULL },
553: { "hpfa", roff_line_ignore, NULL, NULL, 0, NULL },
554: { "hpfcode", roff_line_ignore, NULL, NULL, 0, NULL },
1.59 schwarze 555: { "hw", roff_line_ignore, NULL, NULL, 0, NULL },
1.21 schwarze 556: { "hy", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 557: { "hylang", roff_line_ignore, NULL, NULL, 0, NULL },
558: { "hylen", roff_line_ignore, NULL, NULL, 0, NULL },
559: { "hym", roff_line_ignore, NULL, NULL, 0, NULL },
560: { "hypp", roff_line_ignore, NULL, NULL, 0, NULL },
561: { "hys", roff_line_ignore, NULL, NULL, 0, NULL },
1.3 schwarze 562: { "ie", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
563: { "if", roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT, NULL },
564: { "ig", roff_block, roff_block_text, roff_block_sub, 0, NULL },
1.123 schwarze 565: { "index", roff_unsupp, NULL, NULL, 0, NULL },
1.51 schwarze 566: { "it", roff_it, NULL, NULL, 0, NULL },
1.123 schwarze 567: { "itc", roff_unsupp, NULL, NULL, 0, NULL },
568: { "IX", roff_line_ignore, NULL, NULL, 0, NULL },
569: { "kern", roff_line_ignore, NULL, NULL, 0, NULL },
570: { "kernafter", roff_line_ignore, NULL, NULL, 0, NULL },
571: { "kernbefore", roff_line_ignore, NULL, NULL, 0, NULL },
572: { "kernpair", roff_line_ignore, NULL, NULL, 0, NULL },
573: { "lc", roff_unsupp, NULL, NULL, 0, NULL },
574: { "lc_ctype", roff_unsupp, NULL, NULL, 0, NULL },
575: { "lds", roff_unsupp, NULL, NULL, 0, NULL },
576: { "length", roff_unsupp, NULL, NULL, 0, NULL },
577: { "letadj", roff_line_ignore, NULL, NULL, 0, NULL },
578: { "lf", roff_insec, NULL, NULL, 0, NULL },
579: { "lg", roff_line_ignore, NULL, NULL, 0, NULL },
580: { "lhang", roff_line_ignore, NULL, NULL, 0, NULL },
581: { "linetabs", roff_unsupp, NULL, NULL, 0, NULL },
582: { "lnr", roff_unsupp, NULL, NULL, 0, NULL },
583: { "lnrf", roff_unsupp, NULL, NULL, 0, NULL },
584: { "lpfx", roff_unsupp, NULL, NULL, 0, NULL },
585: { "ls", roff_line_ignore, NULL, NULL, 0, NULL },
586: { "lsm", roff_unsupp, NULL, NULL, 0, NULL },
587: { "lt", roff_line_ignore, NULL, NULL, 0, NULL },
588: { "mc", roff_line_ignore, NULL, NULL, 0, NULL },
589: { "mediasize", roff_line_ignore, NULL, NULL, 0, NULL },
590: { "minss", roff_line_ignore, NULL, NULL, 0, NULL },
591: { "mk", roff_line_ignore, NULL, NULL, 0, NULL },
592: { "mso", roff_insec, NULL, NULL, 0, NULL },
1.128 schwarze 593: { "na", roff_line_ignore, NULL, NULL, 0, NULL },
1.21 schwarze 594: { "ne", roff_line_ignore, NULL, NULL, 0, NULL },
595: { "nh", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 596: { "nhychar", roff_line_ignore, NULL, NULL, 0, NULL },
597: { "nm", roff_unsupp, NULL, NULL, 0, NULL },
598: { "nn", roff_unsupp, NULL, NULL, 0, NULL },
599: { "nop", roff_unsupp, NULL, NULL, 0, NULL },
1.14 schwarze 600: { "nr", roff_nr, NULL, NULL, 0, NULL },
1.123 schwarze 601: { "nrf", roff_unsupp, NULL, NULL, 0, NULL },
602: { "nroff", roff_line_ignore, NULL, NULL, 0, NULL },
1.31 schwarze 603: { "ns", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 604: { "nx", roff_insec, NULL, NULL, 0, NULL },
605: { "open", roff_insec, NULL, NULL, 0, NULL },
606: { "opena", roff_insec, NULL, NULL, 0, NULL },
607: { "os", roff_line_ignore, NULL, NULL, 0, NULL },
608: { "output", roff_unsupp, NULL, NULL, 0, NULL },
609: { "padj", roff_line_ignore, NULL, NULL, 0, NULL },
610: { "papersize", roff_line_ignore, NULL, NULL, 0, NULL },
611: { "pc", roff_line_ignore, NULL, NULL, 0, NULL },
612: { "pev", roff_line_ignore, NULL, NULL, 0, NULL },
613: { "pi", roff_insec, NULL, NULL, 0, NULL },
614: { "PI", roff_unsupp, NULL, NULL, 0, NULL },
1.101 schwarze 615: { "pl", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 616: { "pm", roff_line_ignore, NULL, NULL, 0, NULL },
617: { "pn", roff_line_ignore, NULL, NULL, 0, NULL },
618: { "pnr", roff_line_ignore, NULL, NULL, 0, NULL },
619: { "po", roff_line_ignore, NULL, NULL, 0, NULL },
1.31 schwarze 620: { "ps", roff_line_ignore, NULL, NULL, 0, NULL },
1.123 schwarze 621: { "psbb", roff_unsupp, NULL, NULL, 0, NULL },
1.127 schwarze 622: { "pshape", roff_unsupp, NULL, NULL, 0, NULL },
1.123 schwarze 623: { "pso", roff_insec, NULL, NULL, 0, NULL },
624: { "ptr", roff_line_ignore, NULL, NULL, 0, NULL },
625: { "pvs", roff_line_ignore, NULL, NULL, 0, NULL },
626: { "rchar", roff_unsupp, NULL, NULL, 0, NULL },
627: { "rd", roff_line_ignore, NULL, NULL, 0, NULL },
628: { "recursionlimit", roff_line_ignore, NULL, NULL, 0, NULL },
629: { "return", roff_unsupp, NULL, NULL, 0, NULL },
630: { "rfschar", roff_unsupp, NULL, NULL, 0, NULL },
631: { "rhang", roff_line_ignore, NULL, NULL, 0, NULL },
632: { "rj", roff_line_ignore, NULL, NULL, 0, NULL },
1.29 schwarze 633: { "rm", roff_rm, NULL, NULL, 0, NULL },
1.123 schwarze 634: { "rn", roff_unsupp, NULL, NULL, 0, NULL },
635: { "rnn", roff_unsupp, NULL, NULL, 0, NULL },
1.76 schwarze 636: { "rr", roff_rr, NULL, NULL, 0, NULL },
1.123 schwarze 637: { "rs", roff_line_ignore, NULL, NULL, 0, NULL },
638: { "rt", roff_line_ignore, NULL, NULL, 0, NULL },
639: { "schar", roff_unsupp, NULL, NULL, 0, NULL },
640: { "sentchar", roff_line_ignore, NULL, NULL, 0, NULL },
641: { "shc", roff_line_ignore, NULL, NULL, 0, NULL },
642: { "shift", roff_unsupp, NULL, NULL, 0, NULL },
643: { "sizes", roff_line_ignore, NULL, NULL, 0, NULL },
1.14 schwarze 644: { "so", roff_so, NULL, NULL, 0, NULL },
1.123 schwarze 645: { "spacewidth", roff_line_ignore, NULL, NULL, 0, NULL },
646: { "special", roff_line_ignore, NULL, NULL, 0, NULL },
647: { "spreadwarn", roff_line_ignore, NULL, NULL, 0, NULL },
648: { "ss", roff_line_ignore, NULL, NULL, 0, NULL },
649: { "sty", roff_line_ignore, NULL, NULL, 0, NULL },
650: { "substring", roff_unsupp, NULL, NULL, 0, NULL },
651: { "sv", roff_line_ignore, NULL, NULL, 0, NULL },
652: { "sy", roff_insec, NULL, NULL, 0, NULL },
653: { "T&", roff_T_, NULL, NULL, 0, NULL },
1.127 schwarze 654: { "ta", roff_unsupp, NULL, NULL, 0, NULL },
1.123 schwarze 655: { "tc", roff_unsupp, NULL, NULL, 0, NULL },
656: { "TE", roff_TE, NULL, NULL, 0, NULL },
657: { "TH", roff_TH, NULL, NULL, 0, NULL },
1.127 schwarze 658: { "ti", roff_unsupp, NULL, NULL, 0, NULL },
1.123 schwarze 659: { "tkf", roff_line_ignore, NULL, NULL, 0, NULL },
660: { "tl", roff_unsupp, NULL, NULL, 0, NULL },
661: { "tm", roff_line_ignore, NULL, NULL, 0, NULL },
662: { "tm1", roff_line_ignore, NULL, NULL, 0, NULL },
663: { "tmc", roff_line_ignore, NULL, NULL, 0, NULL },
1.42 schwarze 664: { "tr", roff_tr, NULL, NULL, 0, NULL },
1.123 schwarze 665: { "track", roff_line_ignore, NULL, NULL, 0, NULL },
666: { "transchar", roff_line_ignore, NULL, NULL, 0, NULL },
667: { "trf", roff_insec, NULL, NULL, 0, NULL },
668: { "trimat", roff_line_ignore, NULL, NULL, 0, NULL },
669: { "trin", roff_unsupp, NULL, NULL, 0, NULL },
670: { "trnt", roff_unsupp, NULL, NULL, 0, NULL },
671: { "troff", roff_line_ignore, NULL, NULL, 0, NULL },
1.27 schwarze 672: { "TS", roff_TS, NULL, NULL, 0, NULL },
1.123 schwarze 673: { "uf", roff_line_ignore, NULL, NULL, 0, NULL },
674: { "ul", roff_line_ignore, NULL, NULL, 0, NULL },
675: { "unformat", roff_unsupp, NULL, NULL, 0, NULL },
676: { "unwatch", roff_line_ignore, NULL, NULL, 0, NULL },
677: { "unwatchn", roff_line_ignore, NULL, NULL, 0, NULL },
678: { "vpt", roff_line_ignore, NULL, NULL, 0, NULL },
679: { "vs", roff_line_ignore, NULL, NULL, 0, NULL },
680: { "warn", roff_line_ignore, NULL, NULL, 0, NULL },
681: { "warnscale", roff_line_ignore, NULL, NULL, 0, NULL },
682: { "watch", roff_line_ignore, NULL, NULL, 0, NULL },
683: { "watchlength", roff_line_ignore, NULL, NULL, 0, NULL },
684: { "watchn", roff_line_ignore, NULL, NULL, 0, NULL },
685: { "wh", roff_unsupp, NULL, NULL, 0, NULL },
686: { "while", roff_unsupp, NULL, NULL, 0, NULL },
687: { "write", roff_insec, NULL, NULL, 0, NULL },
688: { "writec", roff_insec, NULL, NULL, 0, NULL },
689: { "writem", roff_insec, NULL, NULL, 0, NULL },
690: { "xflag", roff_line_ignore, NULL, NULL, 0, NULL },
1.3 schwarze 691: { ".", roff_cblock, NULL, NULL, 0, NULL },
1.16 schwarze 692: { NULL, roff_userdef, NULL, NULL, 0, NULL },
1.1 schwarze 693: };
694:
1.73 schwarze 695: /* not currently implemented: Ds em Eq LP Me PP pp Or Rd Sf SH */
1.47 schwarze 696: const char *const __mdoc_reserved[] = {
697: "Ac", "Ad", "An", "Ao", "Ap", "Aq", "Ar", "At",
698: "Bc", "Bd", "Bf", "Bk", "Bl", "Bo", "Bq",
699: "Brc", "Bro", "Brq", "Bsx", "Bt", "Bx",
700: "Cd", "Cm", "Db", "Dc", "Dd", "Dl", "Do", "Dq",
1.73 schwarze 701: "Dt", "Dv", "Dx", "D1",
702: "Ec", "Ed", "Ef", "Ek", "El", "Em",
703: "En", "Eo", "Er", "Es", "Ev", "Ex",
1.47 schwarze 704: "Fa", "Fc", "Fd", "Fl", "Fn", "Fo", "Fr", "Ft", "Fx",
1.73 schwarze 705: "Hf", "Ic", "In", "It", "Lb", "Li", "Lk", "Lp",
706: "Ms", "Mt", "Nd", "Nm", "No", "Ns", "Nx",
1.47 schwarze 707: "Oc", "Oo", "Op", "Os", "Ot", "Ox",
1.73 schwarze 708: "Pa", "Pc", "Pf", "Po", "Pp", "Pq",
709: "Qc", "Ql", "Qo", "Qq", "Re", "Rs", "Rv",
710: "Sc", "Sh", "Sm", "So", "Sq",
1.47 schwarze 711: "Ss", "St", "Sx", "Sy",
712: "Ta", "Tn", "Ud", "Ux", "Va", "Vt", "Xc", "Xo", "Xr",
1.73 schwarze 713: "%A", "%B", "%C", "%D", "%I", "%J", "%N", "%O",
1.47 schwarze 714: "%P", "%Q", "%R", "%T", "%U", "%V",
715: NULL
716: };
717:
1.73 schwarze 718: /* not currently implemented: BT DE DS ME MT PT SY TQ YS */
1.47 schwarze 719: const char *const __man_reserved[] = {
1.73 schwarze 720: "AT", "B", "BI", "BR", "DT",
721: "EE", "EN", "EQ", "EX", "HP", "I", "IB", "IP", "IR",
722: "LP", "OP", "P", "PD", "PP",
723: "R", "RB", "RE", "RI", "RS", "SB", "SH", "SM", "SS",
724: "TE", "TH", "TP", "TS", "T&", "UC", "UE", "UR",
1.47 schwarze 725: NULL
726: };
727:
1.37 schwarze 728: /* Array of injected predefined strings. */
729: #define PREDEFS_MAX 38
730: static const struct predef predefs[PREDEFS_MAX] = {
731: #include "predefs.in"
732: };
733:
1.42 schwarze 734: /* See roffhash_find() */
1.3 schwarze 735: #define ROFF_HASH(p) (p[0] - ASCII_LO)
736:
1.51 schwarze 737: static int roffit_lines; /* number of lines to delay */
738: static char *roffit_macro; /* nil-terminated macro line */
739:
1.80 schwarze 740:
1.138 schwarze 741: /* --- request table ------------------------------------------------------ */
742:
1.3 schwarze 743: static void
1.42 schwarze 744: roffhash_init(void)
1.3 schwarze 745: {
746: struct roffmac *n;
747: int buc, i;
748:
1.16 schwarze 749: for (i = 0; i < (int)ROFF_USERDEF; i++) {
1.3 schwarze 750: assert(roffs[i].name[0] >= ASCII_LO);
751: assert(roffs[i].name[0] <= ASCII_HI);
752:
753: buc = ROFF_HASH(roffs[i].name);
754:
755: if (NULL != (n = hash[buc])) {
756: for ( ; n->next; n = n->next)
757: /* Do nothing. */ ;
758: n->next = &roffs[i];
759: } else
760: hash[buc] = &roffs[i];
761: }
762: }
763:
1.1 schwarze 764: /*
765: * Look up a roff token by its name. Returns ROFF_MAX if no macro by
766: * the nil-terminated string name could be found.
767: */
768: static enum rofft
1.42 schwarze 769: roffhash_find(const char *p, size_t s)
1.1 schwarze 770: {
1.3 schwarze 771: int buc;
772: struct roffmac *n;
1.1 schwarze 773:
1.3 schwarze 774: /*
775: * libroff has an extremely simple hashtable, for the time
776: * being, which simply keys on the first character, which must
777: * be printable, then walks a chain. It works well enough until
778: * optimised.
779: */
780:
781: if (p[0] < ASCII_LO || p[0] > ASCII_HI)
1.149 schwarze 782: return ROFF_MAX;
1.3 schwarze 783:
784: buc = ROFF_HASH(p);
785:
786: if (NULL == (n = hash[buc]))
1.149 schwarze 787: return ROFF_MAX;
1.3 schwarze 788: for ( ; n; n = n->next)
1.16 schwarze 789: if (0 == strncmp(n->name, p, s) && '\0' == n->name[(int)s])
1.149 schwarze 790: return (enum rofft)(n - roffs);
1.1 schwarze 791:
1.149 schwarze 792: return ROFF_MAX;
1.1 schwarze 793: }
794:
1.138 schwarze 795: /* --- stack of request blocks -------------------------------------------- */
796:
1.1 schwarze 797: /*
798: * Pop the current node off of the stack of roff instructions currently
799: * pending.
800: */
801: static void
802: roffnode_pop(struct roff *r)
803: {
804: struct roffnode *p;
805:
1.2 schwarze 806: assert(r->last);
1.80 schwarze 807: p = r->last;
1.2 schwarze 808:
809: r->last = r->last->parent;
1.16 schwarze 810: free(p->name);
811: free(p->end);
1.1 schwarze 812: free(p);
813: }
814:
815: /*
816: * Push a roff node onto the instruction stack. This must later be
817: * removed with roffnode_pop().
818: */
1.11 schwarze 819: static void
1.16 schwarze 820: roffnode_push(struct roff *r, enum rofft tok, const char *name,
821: int line, int col)
1.1 schwarze 822: {
823: struct roffnode *p;
824:
1.11 schwarze 825: p = mandoc_calloc(1, sizeof(struct roffnode));
1.1 schwarze 826: p->tok = tok;
1.16 schwarze 827: if (name)
828: p->name = mandoc_strdup(name);
1.1 schwarze 829: p->parent = r->last;
830: p->line = line;
831: p->col = col;
1.71 schwarze 832: p->rule = p->parent ? p->parent->rule : 0;
1.1 schwarze 833:
834: r->last = p;
835: }
836:
1.138 schwarze 837: /* --- roff parser state data management ---------------------------------- */
838:
1.1 schwarze 839: static void
840: roff_free1(struct roff *r)
841: {
1.49 schwarze 842: struct tbl_node *tbl;
1.32 schwarze 843: struct eqn_node *e;
1.42 schwarze 844: int i;
1.27 schwarze 845:
1.49 schwarze 846: while (NULL != (tbl = r->first_tbl)) {
847: r->first_tbl = tbl->next;
848: tbl_free(tbl);
1.27 schwarze 849: }
850: r->first_tbl = r->last_tbl = r->tbl = NULL;
1.1 schwarze 851:
1.32 schwarze 852: while (NULL != (e = r->first_eqn)) {
853: r->first_eqn = e->next;
854: eqn_free(e);
855: }
856: r->first_eqn = r->last_eqn = r->eqn = NULL;
857:
1.1 schwarze 858: while (r->last)
859: roffnode_pop(r);
1.27 schwarze 860:
1.96 schwarze 861: free (r->rstack);
862: r->rstack = NULL;
863: r->rstacksz = 0;
864: r->rstackpos = -1;
865:
866: roff_freereg(r->regtab);
867: r->regtab = NULL;
868:
1.42 schwarze 869: roff_freestr(r->strtab);
870: roff_freestr(r->xmbtab);
871: r->strtab = r->xmbtab = NULL;
872:
873: if (r->xtab)
874: for (i = 0; i < 128; i++)
875: free(r->xtab[i].p);
876: free(r->xtab);
877: r->xtab = NULL;
1.1 schwarze 878: }
879:
880: void
881: roff_reset(struct roff *r)
882: {
883:
884: roff_free1(r);
1.99 schwarze 885: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.48 schwarze 886: r->control = 0;
1.1 schwarze 887: }
888:
889: void
890: roff_free(struct roff *r)
891: {
892:
893: roff_free1(r);
894: free(r);
895: }
896:
897: struct roff *
1.151 schwarze 898: roff_alloc(struct mparse *parse, int options)
1.1 schwarze 899: {
900: struct roff *r;
901:
1.11 schwarze 902: r = mandoc_calloc(1, sizeof(struct roff));
1.35 schwarze 903: r->parse = parse;
1.72 schwarze 904: r->options = options;
1.99 schwarze 905: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.2 schwarze 906: r->rstackpos = -1;
1.80 schwarze 907:
1.42 schwarze 908: roffhash_init();
1.37 schwarze 909:
1.149 schwarze 910: return r;
1.137 schwarze 911: }
912:
1.138 schwarze 913: /* --- syntax tree state data management ---------------------------------- */
914:
1.137 schwarze 915: static void
916: roff_man_free1(struct roff_man *man)
917: {
918:
1.138 schwarze 919: if (man->first != NULL)
920: roff_node_delete(man, man->first);
1.137 schwarze 921: free(man->meta.msec);
922: free(man->meta.vol);
923: free(man->meta.os);
924: free(man->meta.arch);
925: free(man->meta.title);
926: free(man->meta.name);
927: free(man->meta.date);
928: }
929:
930: static void
931: roff_man_alloc1(struct roff_man *man)
932: {
933:
934: memset(&man->meta, 0, sizeof(man->meta));
935: man->first = mandoc_calloc(1, sizeof(*man->first));
936: man->first->type = ROFFT_ROOT;
937: man->last = man->first;
938: man->last_es = NULL;
939: man->flags = 0;
940: man->macroset = MACROSET_NONE;
941: man->lastsec = man->lastnamed = SEC_NONE;
942: man->next = ROFF_NEXT_CHILD;
943: }
944:
945: void
946: roff_man_reset(struct roff_man *man)
947: {
948:
949: roff_man_free1(man);
950: roff_man_alloc1(man);
951: }
952:
953: void
954: roff_man_free(struct roff_man *man)
955: {
956:
957: roff_man_free1(man);
958: free(man);
959: }
960:
961: struct roff_man *
962: roff_man_alloc(struct roff *roff, struct mparse *parse,
963: const char *defos, int quick)
964: {
965: struct roff_man *man;
966:
967: man = mandoc_calloc(1, sizeof(*man));
968: man->parse = parse;
969: man->roff = roff;
970: man->defos = defos;
971: man->quick = quick;
972: roff_man_alloc1(man);
1.149 schwarze 973: return man;
1.1 schwarze 974: }
975:
1.138 schwarze 976: /* --- syntax tree handling ----------------------------------------------- */
977:
978: struct roff_node *
979: roff_node_alloc(struct roff_man *man, int line, int pos,
980: enum roff_type type, int tok)
981: {
982: struct roff_node *n;
983:
984: n = mandoc_calloc(1, sizeof(*n));
985: n->line = line;
986: n->pos = pos;
987: n->tok = tok;
988: n->type = type;
989: n->sec = man->lastsec;
990:
991: if (man->flags & MDOC_SYNOPSIS)
1.157 schwarze 992: n->flags |= NODE_SYNPRETTY;
1.138 schwarze 993: else
1.157 schwarze 994: n->flags &= ~NODE_SYNPRETTY;
1.138 schwarze 995: if (man->flags & MDOC_NEWLINE)
1.157 schwarze 996: n->flags |= NODE_LINE;
1.138 schwarze 997: man->flags &= ~MDOC_NEWLINE;
998:
1.149 schwarze 999: return n;
1.138 schwarze 1000: }
1001:
1002: void
1003: roff_node_append(struct roff_man *man, struct roff_node *n)
1004: {
1005:
1006: switch (man->next) {
1007: case ROFF_NEXT_SIBLING:
1.153 schwarze 1008: if (man->last->next != NULL) {
1009: n->next = man->last->next;
1010: man->last->next->prev = n;
1011: } else
1012: man->last->parent->last = n;
1.138 schwarze 1013: man->last->next = n;
1014: n->prev = man->last;
1015: n->parent = man->last->parent;
1016: break;
1017: case ROFF_NEXT_CHILD:
1.159 schwarze 1018: if (man->last->child != NULL) {
1019: n->next = man->last->child;
1020: man->last->child->prev = n;
1021: } else
1022: man->last->last = n;
1.138 schwarze 1023: man->last->child = n;
1024: n->parent = man->last;
1025: break;
1026: default:
1027: abort();
1028: }
1.154 schwarze 1029: man->last = n;
1.138 schwarze 1030:
1031: switch (n->type) {
1032: case ROFFT_HEAD:
1033: n->parent->head = n;
1034: break;
1035: case ROFFT_BODY:
1.154 schwarze 1036: if (n->end != ENDBODY_NOT)
1037: return;
1.138 schwarze 1038: n->parent->body = n;
1039: break;
1040: case ROFFT_TAIL:
1041: n->parent->tail = n;
1042: break;
1043: default:
1.154 schwarze 1044: return;
1.138 schwarze 1045: }
1.154 schwarze 1046:
1047: /*
1048: * Copy over the normalised-data pointer of our parent. Not
1049: * everybody has one, but copying a null pointer is fine.
1050: */
1051:
1052: n->norm = n->parent->norm;
1053: assert(n->parent->type == ROFFT_BLOCK);
1.138 schwarze 1054: }
1055:
1.139 schwarze 1056: void
1057: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
1058: {
1059: struct roff_node *n;
1060:
1061: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
1062: n->string = roff_strdup(man->roff, word);
1063: roff_node_append(man, n);
1.158 schwarze 1064: n->flags |= NODE_VALID | NODE_ENDED;
1.139 schwarze 1065: man->next = ROFF_NEXT_SIBLING;
1066: }
1067:
1068: void
1069: roff_word_append(struct roff_man *man, const char *word)
1070: {
1071: struct roff_node *n;
1072: char *addstr, *newstr;
1073:
1074: n = man->last;
1075: addstr = roff_strdup(man->roff, word);
1076: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
1077: free(addstr);
1078: free(n->string);
1079: n->string = newstr;
1080: man->next = ROFF_NEXT_SIBLING;
1.140 schwarze 1081: }
1082:
1083: void
1084: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
1085: {
1086: struct roff_node *n;
1087:
1088: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
1089: roff_node_append(man, n);
1090: man->next = ROFF_NEXT_CHILD;
1091: }
1092:
1093: struct roff_node *
1094: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
1095: {
1096: struct roff_node *n;
1097:
1098: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
1099: roff_node_append(man, n);
1100: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 1101: return n;
1.139 schwarze 1102: }
1103:
1.138 schwarze 1104: struct roff_node *
1105: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
1106: {
1107: struct roff_node *n;
1108:
1109: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
1110: roff_node_append(man, n);
1111: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 1112: return n;
1.138 schwarze 1113: }
1114:
1115: struct roff_node *
1116: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1117: {
1118: struct roff_node *n;
1119:
1120: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1121: roff_node_append(man, n);
1122: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 1123: return n;
1.139 schwarze 1124: }
1125:
1126: void
1127: roff_addeqn(struct roff_man *man, const struct eqn *eqn)
1128: {
1129: struct roff_node *n;
1130:
1131: n = roff_node_alloc(man, eqn->ln, eqn->pos, ROFFT_EQN, TOKEN_NONE);
1132: n->eqn = eqn;
1133: if (eqn->ln > man->last->line)
1.157 schwarze 1134: n->flags |= NODE_LINE;
1.139 schwarze 1135: roff_node_append(man, n);
1136: man->next = ROFF_NEXT_SIBLING;
1137: }
1138:
1139: void
1140: roff_addtbl(struct roff_man *man, const struct tbl_span *tbl)
1141: {
1142: struct roff_node *n;
1143:
1144: if (man->macroset == MACROSET_MAN)
1145: man_breakscope(man, TOKEN_NONE);
1146: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
1147: n->span = tbl;
1148: roff_node_append(man, n);
1.158 schwarze 1149: n->flags |= NODE_VALID | NODE_ENDED;
1.139 schwarze 1150: man->next = ROFF_NEXT_SIBLING;
1.138 schwarze 1151: }
1152:
1153: void
1154: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1155: {
1156:
1157: /* Adjust siblings. */
1158:
1159: if (n->prev)
1160: n->prev->next = n->next;
1161: if (n->next)
1162: n->next->prev = n->prev;
1163:
1164: /* Adjust parent. */
1165:
1166: if (n->parent != NULL) {
1167: if (n->parent->child == n)
1168: n->parent->child = n->next;
1169: if (n->parent->last == n)
1170: n->parent->last = n->prev;
1171: }
1172:
1173: /* Adjust parse point. */
1174:
1175: if (man == NULL)
1176: return;
1177: if (man->last == n) {
1178: if (n->prev == NULL) {
1179: man->last = n->parent;
1180: man->next = ROFF_NEXT_CHILD;
1181: } else {
1182: man->last = n->prev;
1183: man->next = ROFF_NEXT_SIBLING;
1184: }
1185: }
1186: if (man->first == n)
1187: man->first = NULL;
1188: }
1189:
1190: void
1191: roff_node_free(struct roff_node *n)
1192: {
1193:
1194: if (n->args != NULL)
1195: mdoc_argv_free(n->args);
1196: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1197: free(n->norm);
1198: free(n->string);
1199: free(n);
1200: }
1201:
1202: void
1203: roff_node_delete(struct roff_man *man, struct roff_node *n)
1204: {
1205:
1206: while (n->child != NULL)
1207: roff_node_delete(man, n->child);
1208: roff_node_unlink(man, n);
1209: roff_node_free(n);
1.141 schwarze 1210: }
1211:
1212: void
1213: deroff(char **dest, const struct roff_node *n)
1214: {
1215: char *cp;
1216: size_t sz;
1217:
1218: if (n->type != ROFFT_TEXT) {
1219: for (n = n->child; n != NULL; n = n->next)
1220: deroff(dest, n);
1221: return;
1222: }
1223:
1.160 schwarze 1224: /* Skip leading whitespace. */
1.141 schwarze 1225:
1.160 schwarze 1226: for (cp = n->string; *cp != '\0'; cp++) {
1.161 schwarze 1227: if (cp[0] == '\\' && cp[1] != '\0' &&
1228: strchr(" %&0^|~", cp[1]) != NULL)
1.141 schwarze 1229: cp++;
1.160 schwarze 1230: else if ( ! isspace((unsigned char)*cp))
1.141 schwarze 1231: break;
1232: }
1233:
1.161 schwarze 1234: /* Skip trailing backslash. */
1235:
1236: sz = strlen(cp);
1.162 schwarze 1237: if (sz > 0 && cp[sz - 1] == '\\')
1.161 schwarze 1238: sz--;
1239:
1.141 schwarze 1240: /* Skip trailing whitespace. */
1241:
1.161 schwarze 1242: for (; sz; sz--)
1.141 schwarze 1243: if ( ! isspace((unsigned char)cp[sz-1]))
1244: break;
1245:
1246: /* Skip empty strings. */
1247:
1248: if (sz == 0)
1249: return;
1250:
1251: if (*dest == NULL) {
1252: *dest = mandoc_strndup(cp, sz);
1253: return;
1254: }
1255:
1256: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1257: free(*dest);
1258: *dest = cp;
1.138 schwarze 1259: }
1260:
1261: /* --- main functions of the roff parser ---------------------------------- */
1262:
1.8 schwarze 1263: /*
1.79 schwarze 1264: * In the current line, expand escape sequences that tend to get
1265: * used in numerical expressions and conditional requests.
1266: * Also check the syntax of the remaining escape sequences.
1.8 schwarze 1267: */
1.45 schwarze 1268: static enum rofferr
1.110 schwarze 1269: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.8 schwarze 1270: {
1.81 schwarze 1271: char ubuf[24]; /* buffer to print the number */
1.78 schwarze 1272: const char *start; /* start of the string to process */
1.82 schwarze 1273: char *stesc; /* start of an escape sequence ('\\') */
1.23 schwarze 1274: const char *stnam; /* start of the name, after "[(*" */
1275: const char *cp; /* end of the name, e.g. before ']' */
1276: const char *res; /* the string to be substituted */
1.110 schwarze 1277: char *nbuf; /* new buffer to copy buf->buf to */
1.53 schwarze 1278: size_t maxl; /* expected length of the escape name */
1279: size_t naml; /* actual length of the escape name */
1.109 schwarze 1280: enum mandoc_esc esc; /* type of the escape sequence */
1281: int inaml; /* length returned from mandoc_escape() */
1.53 schwarze 1282: int expand_count; /* to avoid infinite loops */
1.79 schwarze 1283: int npos; /* position in numeric expression */
1.91 schwarze 1284: int arg_complete; /* argument not interrupted by eol */
1.79 schwarze 1285: char term; /* character terminating the escape */
1.8 schwarze 1286:
1.43 schwarze 1287: expand_count = 0;
1.110 schwarze 1288: start = buf->buf + pos;
1.78 schwarze 1289: stesc = strchr(start, '\0') - 1;
1290: while (stesc-- > start) {
1.43 schwarze 1291:
1.78 schwarze 1292: /* Search backwards for the next backslash. */
1293:
1.110 schwarze 1294: if (*stesc != '\\')
1.78 schwarze 1295: continue;
1296:
1297: /* If it is escaped, skip it. */
1298:
1299: for (cp = stesc - 1; cp >= start; cp--)
1.110 schwarze 1300: if (*cp != '\\')
1.78 schwarze 1301: break;
1302:
1.110 schwarze 1303: if ((stesc - cp) % 2 == 0) {
1.82 schwarze 1304: stesc = (char *)cp;
1.78 schwarze 1305: continue;
1306: }
1.23 schwarze 1307:
1.79 schwarze 1308: /* Decide whether to expand or to check only. */
1.23 schwarze 1309:
1.79 schwarze 1310: term = '\0';
1.78 schwarze 1311: cp = stesc + 1;
1.53 schwarze 1312: switch (*cp) {
1.80 schwarze 1313: case '*':
1.53 schwarze 1314: res = NULL;
1315: break;
1.80 schwarze 1316: case 'B':
1317: case 'w':
1.79 schwarze 1318: term = cp[1];
1319: /* FALLTHROUGH */
1.80 schwarze 1320: case 'n':
1.53 schwarze 1321: res = ubuf;
1322: break;
1323: default:
1.109 schwarze 1324: esc = mandoc_escape(&cp, &stnam, &inaml);
1325: if (esc == ESCAPE_ERROR ||
1326: (esc == ESCAPE_SPECIAL &&
1.151 schwarze 1327: mchars_spec2cp(stnam, inaml) < 0))
1.92 schwarze 1328: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.110 schwarze 1329: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1330: "%.*s", (int)(cp - stesc), stesc);
1.78 schwarze 1331: continue;
1.42 schwarze 1332: }
1333:
1.78 schwarze 1334: if (EXPAND_LIMIT < ++expand_count) {
1335: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.110 schwarze 1336: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1337: return ROFF_IGN;
1.78 schwarze 1338: }
1.23 schwarze 1339:
1340: /*
1341: * The third character decides the length
1.53 schwarze 1342: * of the name of the string or register.
1.23 schwarze 1343: * Save a pointer to the name.
1344: */
1345:
1.110 schwarze 1346: if (term == '\0') {
1.79 schwarze 1347: switch (*++cp) {
1.80 schwarze 1348: case '\0':
1.79 schwarze 1349: maxl = 0;
1350: break;
1.80 schwarze 1351: case '(':
1.79 schwarze 1352: cp++;
1353: maxl = 2;
1354: break;
1.80 schwarze 1355: case '[':
1.79 schwarze 1356: cp++;
1357: term = ']';
1358: maxl = 0;
1359: break;
1360: default:
1361: maxl = 1;
1362: break;
1363: }
1364: } else {
1365: cp += 2;
1.8 schwarze 1366: maxl = 0;
1367: }
1.23 schwarze 1368: stnam = cp;
1.8 schwarze 1369:
1.23 schwarze 1370: /* Advance to the end of the name. */
1.8 schwarze 1371:
1.125 schwarze 1372: naml = 0;
1.91 schwarze 1373: arg_complete = 1;
1.125 schwarze 1374: while (maxl == 0 || naml < maxl) {
1.110 schwarze 1375: if (*cp == '\0') {
1.92 schwarze 1376: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 1377: ln, (int)(stesc - buf->buf), stesc);
1.91 schwarze 1378: arg_complete = 0;
1.79 schwarze 1379: break;
1.42 schwarze 1380: }
1.110 schwarze 1381: if (maxl == 0 && *cp == term) {
1.79 schwarze 1382: cp++;
1.125 schwarze 1383: break;
1384: }
1385: if (*cp++ != '\\' || stesc[1] != 'w') {
1386: naml++;
1387: continue;
1388: }
1389: switch (mandoc_escape(&cp, NULL, NULL)) {
1390: case ESCAPE_SPECIAL:
1391: case ESCAPE_UNICODE:
1392: case ESCAPE_NUMBERED:
1393: case ESCAPE_OVERSTRIKE:
1394: naml++;
1395: break;
1396: default:
1.8 schwarze 1397: break;
1.79 schwarze 1398: }
1.8 schwarze 1399: }
1400:
1.23 schwarze 1401: /*
1402: * Retrieve the replacement string; if it is
1403: * undefined, resume searching for escapes.
1404: */
1405:
1.79 schwarze 1406: switch (stesc[1]) {
1.80 schwarze 1407: case '*':
1.91 schwarze 1408: if (arg_complete)
1409: res = roff_getstrn(r, stnam, naml);
1.79 schwarze 1410: break;
1.80 schwarze 1411: case 'B':
1.79 schwarze 1412: npos = 0;
1.91 schwarze 1413: ubuf[0] = arg_complete &&
1.133 schwarze 1414: roff_evalnum(r, ln, stnam, &npos,
1415: NULL, ROFFNUM_SCALE) &&
1.91 schwarze 1416: stnam + npos + 1 == cp ? '1' : '0';
1.79 schwarze 1417: ubuf[1] = '\0';
1418: break;
1.80 schwarze 1419: case 'n':
1.91 schwarze 1420: if (arg_complete)
1421: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1422: roff_getregn(r, stnam, naml));
1423: else
1424: ubuf[0] = '\0';
1.79 schwarze 1425: break;
1.80 schwarze 1426: case 'w':
1.91 schwarze 1427: /* use even incomplete args */
1.81 schwarze 1428: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.79 schwarze 1429: 24 * (int)naml);
1430: break;
1431: }
1.8 schwarze 1432:
1.110 schwarze 1433: if (res == NULL) {
1.92 schwarze 1434: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1435: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1436: "%.*s", (int)naml, stnam);
1.37 schwarze 1437: res = "";
1.118 schwarze 1438: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1439: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1440: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1441: return ROFF_IGN;
1.8 schwarze 1442: }
1443:
1.23 schwarze 1444: /* Replace the escape sequence by the string. */
1445:
1.82 schwarze 1446: *stesc = '\0';
1.110 schwarze 1447: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1448: buf->buf, res, cp) + 1;
1.8 schwarze 1449:
1.78 schwarze 1450: /* Prepare for the next replacement. */
1.8 schwarze 1451:
1.78 schwarze 1452: start = nbuf + pos;
1.110 schwarze 1453: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1454: free(buf->buf);
1455: buf->buf = nbuf;
1.42 schwarze 1456: }
1.149 schwarze 1457: return ROFF_CONT;
1.42 schwarze 1458: }
1459:
1460: /*
1.147 schwarze 1461: * Process text streams.
1.42 schwarze 1462: */
1463: static enum rofferr
1.110 schwarze 1464: roff_parsetext(struct buf *buf, int pos, int *offs)
1.42 schwarze 1465: {
1466: size_t sz;
1467: const char *start;
1.51 schwarze 1468: char *p;
1469: int isz;
1.42 schwarze 1470: enum mandoc_esc esc;
1471:
1.147 schwarze 1472: /* Spring the input line trap. */
1473:
1474: if (roffit_lines == 1) {
1475: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1476: free(buf->buf);
1477: buf->buf = p;
1478: buf->sz = isz + 1;
1479: *offs = 0;
1480: free(roffit_macro);
1481: roffit_lines = 0;
1.149 schwarze 1482: return ROFF_REPARSE;
1.147 schwarze 1483: } else if (roffit_lines > 1)
1484: --roffit_lines;
1485:
1486: /* Convert all breakable hyphens into ASCII_HYPH. */
1487:
1.110 schwarze 1488: start = p = buf->buf + pos;
1.42 schwarze 1489:
1.110 schwarze 1490: while (*p != '\0') {
1.42 schwarze 1491: sz = strcspn(p, "-\\");
1492: p += sz;
1493:
1.110 schwarze 1494: if (*p == '\0')
1.42 schwarze 1495: break;
1496:
1.110 schwarze 1497: if (*p == '\\') {
1.42 schwarze 1498: /* Skip over escapes. */
1499: p++;
1.62 schwarze 1500: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.110 schwarze 1501: if (esc == ESCAPE_ERROR)
1.42 schwarze 1502: break;
1.136 schwarze 1503: while (*p == '-')
1504: p++;
1.42 schwarze 1505: continue;
1506: } else if (p == start) {
1507: p++;
1508: continue;
1509: }
1510:
1.44 schwarze 1511: if (isalpha((unsigned char)p[-1]) &&
1512: isalpha((unsigned char)p[1]))
1.42 schwarze 1513: *p = ASCII_HYPH;
1514: p++;
1.8 schwarze 1515: }
1.149 schwarze 1516: return ROFF_CONT;
1.8 schwarze 1517: }
1518:
1.1 schwarze 1519: enum rofferr
1.110 schwarze 1520: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.1 schwarze 1521: {
1522: enum rofft t;
1.27 schwarze 1523: enum rofferr e;
1.110 schwarze 1524: int pos; /* parse point */
1.115 schwarze 1525: int spos; /* saved parse point for messages */
1.110 schwarze 1526: int ppos; /* original offset in buf->buf */
1527: int ctl; /* macro line (boolean) */
1528:
1529: ppos = pos = *offs;
1.1 schwarze 1530:
1.102 schwarze 1531: /* Handle in-line equation delimiters. */
1532:
1.108 schwarze 1533: if (r->tbl == NULL &&
1534: r->last_eqn != NULL && r->last_eqn->delim &&
1.102 schwarze 1535: (r->eqn == NULL || r->eqn_inline)) {
1.110 schwarze 1536: e = roff_eqndelim(r, buf, pos);
1.102 schwarze 1537: if (e == ROFF_REPARSE)
1.149 schwarze 1538: return e;
1.102 schwarze 1539: assert(e == ROFF_CONT);
1540: }
1541:
1542: /* Expand some escape sequences. */
1.8 schwarze 1543:
1.110 schwarze 1544: e = roff_res(r, buf, ln, pos);
1545: if (e == ROFF_IGN)
1.149 schwarze 1546: return e;
1.110 schwarze 1547: assert(e == ROFF_CONT);
1.8 schwarze 1548:
1.110 schwarze 1549: ctl = roff_getcontrol(r, buf->buf, &pos);
1.35 schwarze 1550:
1.8 schwarze 1551: /*
1.2 schwarze 1552: * First, if a scope is open and we're not a macro, pass the
1.124 schwarze 1553: * text through the macro's filter.
1554: * Equations process all content themselves.
1555: * Tables process almost all content themselves, but we want
1556: * to warn about macros before passing it there.
1.2 schwarze 1557: */
1558:
1.124 schwarze 1559: if (r->last != NULL && ! ctl) {
1.2 schwarze 1560: t = r->last->tok;
1561: assert(roffs[t].text);
1.110 schwarze 1562: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1563: assert(e == ROFF_IGN || e == ROFF_CONT);
1564: if (e != ROFF_CONT)
1.149 schwarze 1565: return e;
1.54 schwarze 1566: }
1.124 schwarze 1567: if (r->eqn != NULL)
1.149 schwarze 1568: return eqn_read(&r->eqn, ln, buf->buf, ppos, offs);
1.124 schwarze 1569: if (r->tbl != NULL && ( ! ctl || buf->buf[pos] == '\0'))
1.149 schwarze 1570: return tbl_read(r->tbl, ln, buf->buf, ppos);
1.124 schwarze 1571: if ( ! ctl)
1.149 schwarze 1572: return roff_parsetext(buf, pos, offs);
1.100 schwarze 1573:
1574: /* Skip empty request lines. */
1575:
1.110 schwarze 1576: if (buf->buf[pos] == '"') {
1.100 schwarze 1577: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1578: ln, pos, NULL);
1.149 schwarze 1579: return ROFF_IGN;
1.110 schwarze 1580: } else if (buf->buf[pos] == '\0')
1.149 schwarze 1581: return ROFF_IGN;
1.2 schwarze 1582:
1583: /*
1584: * If a scope is open, go to the child handler for that macro,
1585: * as it may want to preprocess before doing anything with it.
1.32 schwarze 1586: * Don't do so if an equation is open.
1.2 schwarze 1587: */
1588:
1589: if (r->last) {
1.1 schwarze 1590: t = r->last->tok;
1591: assert(roffs[t].sub);
1.149 schwarze 1592: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1593: }
1594:
1.115 schwarze 1595: /* No scope is open. This is a new request or macro. */
1596:
1597: spos = pos;
1598: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1599:
1600: /* Tables ignore most macros. */
1601:
1602: if (r->tbl != NULL && (t == ROFF_MAX || t == ROFF_TS)) {
1603: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1604: ln, pos, buf->buf + spos);
1.129 schwarze 1605: if (t == ROFF_TS)
1.149 schwarze 1606: return ROFF_IGN;
1.129 schwarze 1607: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1608: pos++;
1.163 schwarze 1609: while (buf->buf[pos] == ' ')
1.129 schwarze 1610: pos++;
1.149 schwarze 1611: return tbl_read(r->tbl, ln, buf->buf, pos);
1.115 schwarze 1612: }
1613:
1.2 schwarze 1614: /*
1.115 schwarze 1615: * This is neither a roff request nor a user-defined macro.
1616: * Let the standard macro set parsers handle it.
1.2 schwarze 1617: */
1618:
1.115 schwarze 1619: if (t == ROFF_MAX)
1.149 schwarze 1620: return ROFF_CONT;
1.115 schwarze 1621:
1622: /* Execute a roff request or a user defined macro. */
1.1 schwarze 1623:
1.2 schwarze 1624: assert(roffs[t].proc);
1.149 schwarze 1625: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1626: }
1627:
1.27 schwarze 1628: void
1.2 schwarze 1629: roff_endparse(struct roff *r)
1630: {
1.1 schwarze 1631:
1.27 schwarze 1632: if (r->last)
1.94 schwarze 1633: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1634: r->last->line, r->last->col,
1635: roffs[r->last->tok].name);
1.27 schwarze 1636:
1.32 schwarze 1637: if (r->eqn) {
1.94 schwarze 1638: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1639: r->eqn->eqn.ln, r->eqn->eqn.pos, "EQ");
1.41 schwarze 1640: eqn_end(&r->eqn);
1.32 schwarze 1641: }
1642:
1.27 schwarze 1643: if (r->tbl) {
1.94 schwarze 1644: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1645: r->tbl->line, r->tbl->pos, "TS");
1.41 schwarze 1646: tbl_end(&r->tbl);
1.27 schwarze 1647: }
1.1 schwarze 1648: }
1649:
1650: /*
1651: * Parse a roff node's type from the input buffer. This must be in the
1652: * form of ".foo xxx" in the usual way.
1653: */
1654: static enum rofft
1.87 schwarze 1655: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.1 schwarze 1656: {
1.87 schwarze 1657: char *cp;
1.16 schwarze 1658: const char *mac;
1659: size_t maclen;
1.1 schwarze 1660: enum rofft t;
1661:
1.87 schwarze 1662: cp = buf + *pos;
1663:
1664: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.149 schwarze 1665: return ROFF_MAX;
1.1 schwarze 1666:
1.87 schwarze 1667: mac = cp;
1668: maclen = roff_getname(r, &cp, ln, ppos);
1.1 schwarze 1669:
1.16 schwarze 1670: t = (r->current_string = roff_getstrn(r, mac, maclen))
1.42 schwarze 1671: ? ROFF_USERDEF : roffhash_find(mac, maclen);
1.1 schwarze 1672:
1.87 schwarze 1673: if (ROFF_MAX != t)
1674: *pos = cp - buf;
1.1 schwarze 1675:
1.149 schwarze 1676: return t;
1.1 schwarze 1677: }
1678:
1.138 schwarze 1679: /* --- handling of request blocks ----------------------------------------- */
1680:
1.1 schwarze 1681: static enum rofferr
1.2 schwarze 1682: roff_cblock(ROFF_ARGS)
1.1 schwarze 1683: {
1684:
1.2 schwarze 1685: /*
1686: * A block-close `..' should only be invoked as a child of an
1687: * ignore macro, otherwise raise a warning and just ignore it.
1688: */
1689:
1.110 schwarze 1690: if (r->last == NULL) {
1.94 schwarze 1691: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1692: ln, ppos, "..");
1.149 schwarze 1693: return ROFF_IGN;
1.2 schwarze 1694: }
1.1 schwarze 1695:
1.2 schwarze 1696: switch (r->last->tok) {
1.80 schwarze 1697: case ROFF_am:
1.93 schwarze 1698: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.80 schwarze 1699: case ROFF_ami:
1700: case ROFF_de:
1.23 schwarze 1701: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.80 schwarze 1702: case ROFF_dei:
1703: case ROFF_ig:
1.2 schwarze 1704: break;
1705: default:
1.94 schwarze 1706: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1707: ln, ppos, "..");
1.149 schwarze 1708: return ROFF_IGN;
1.2 schwarze 1709: }
1710:
1.110 schwarze 1711: if (buf->buf[pos] != '\0')
1.90 schwarze 1712: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 1713: ".. %s", buf->buf + pos);
1.2 schwarze 1714:
1715: roffnode_pop(r);
1716: roffnode_cleanscope(r);
1.149 schwarze 1717: return ROFF_IGN;
1.2 schwarze 1718:
1719: }
1.1 schwarze 1720:
1.2 schwarze 1721: static void
1722: roffnode_cleanscope(struct roff *r)
1723: {
1.1 schwarze 1724:
1.2 schwarze 1725: while (r->last) {
1.46 schwarze 1726: if (--r->last->endspan != 0)
1.2 schwarze 1727: break;
1728: roffnode_pop(r);
1729: }
1730: }
1.1 schwarze 1731:
1.68 schwarze 1732: static void
1733: roff_ccond(struct roff *r, int ln, int ppos)
1.2 schwarze 1734: {
1.1 schwarze 1735:
1.2 schwarze 1736: if (NULL == r->last) {
1.94 schwarze 1737: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1738: ln, ppos, "\\}");
1.68 schwarze 1739: return;
1.2 schwarze 1740: }
1.1 schwarze 1741:
1.2 schwarze 1742: switch (r->last->tok) {
1.80 schwarze 1743: case ROFF_el:
1744: case ROFF_ie:
1745: case ROFF_if:
1.2 schwarze 1746: break;
1747: default:
1.94 schwarze 1748: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1749: ln, ppos, "\\}");
1.68 schwarze 1750: return;
1.2 schwarze 1751: }
1.1 schwarze 1752:
1.2 schwarze 1753: if (r->last->endspan > -1) {
1.94 schwarze 1754: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1755: ln, ppos, "\\}");
1.68 schwarze 1756: return;
1.2 schwarze 1757: }
1758:
1759: roffnode_pop(r);
1760: roffnode_cleanscope(r);
1.68 schwarze 1761: return;
1.1 schwarze 1762: }
1763:
1764: static enum rofferr
1.2 schwarze 1765: roff_block(ROFF_ARGS)
1.1 schwarze 1766: {
1.93 schwarze 1767: const char *name;
1768: char *iname, *cp;
1.86 schwarze 1769: size_t namesz;
1.16 schwarze 1770:
1.93 schwarze 1771: /* Ignore groff compatibility mode for now. */
1.2 schwarze 1772:
1.110 schwarze 1773: if (tok == ROFF_de1)
1.93 schwarze 1774: tok = ROFF_de;
1.123 schwarze 1775: else if (tok == ROFF_dei1)
1776: tok = ROFF_dei;
1.110 schwarze 1777: else if (tok == ROFF_am1)
1.93 schwarze 1778: tok = ROFF_am;
1.123 schwarze 1779: else if (tok == ROFF_ami1)
1780: tok = ROFF_ami;
1.93 schwarze 1781:
1782: /* Parse the macro name argument. */
1783:
1.110 schwarze 1784: cp = buf->buf + pos;
1785: if (tok == ROFF_ig) {
1.93 schwarze 1786: iname = NULL;
1787: namesz = 0;
1788: } else {
1789: iname = cp;
1790: namesz = roff_getname(r, &cp, ln, ppos);
1791: iname[namesz] = '\0';
1792: }
1.22 schwarze 1793:
1.93 schwarze 1794: /* Resolve the macro name argument if it is indirect. */
1.22 schwarze 1795:
1.110 schwarze 1796: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1797: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.93 schwarze 1798: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1799: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1800: "%.*s", (int)namesz, iname);
1801: namesz = 0;
1802: } else
1803: namesz = strlen(name);
1804: } else
1805: name = iname;
1.22 schwarze 1806:
1.110 schwarze 1807: if (namesz == 0 && tok != ROFF_ig) {
1.93 schwarze 1808: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1809: ln, ppos, roffs[tok].name);
1.149 schwarze 1810: return ROFF_IGN;
1.93 schwarze 1811: }
1.2 schwarze 1812:
1.16 schwarze 1813: roffnode_push(r, tok, name, ln, ppos);
1814:
1815: /*
1816: * At the beginning of a `de' macro, clear the existing string
1817: * with the same name, if there is one. New content will be
1.66 schwarze 1818: * appended from roff_block_text() in multiline mode.
1.16 schwarze 1819: */
1.22 schwarze 1820:
1.110 schwarze 1821: if (tok == ROFF_de || tok == ROFF_dei)
1.86 schwarze 1822: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.2 schwarze 1823:
1.110 schwarze 1824: if (*cp == '\0')
1.149 schwarze 1825: return ROFF_IGN;
1.1 schwarze 1826:
1.93 schwarze 1827: /* Get the custom end marker. */
1.22 schwarze 1828:
1.93 schwarze 1829: iname = cp;
1.86 schwarze 1830: namesz = roff_getname(r, &cp, ln, ppos);
1.93 schwarze 1831:
1832: /* Resolve the end marker if it is indirect. */
1833:
1.110 schwarze 1834: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1835: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.93 schwarze 1836: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1837: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1838: "%.*s", (int)namesz, iname);
1839: namesz = 0;
1840: } else
1841: namesz = strlen(name);
1842: } else
1843: name = iname;
1844:
1.86 schwarze 1845: if (namesz)
1846: r->last->end = mandoc_strndup(name, namesz);
1.2 schwarze 1847:
1.110 schwarze 1848: if (*cp != '\0')
1.90 schwarze 1849: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1850: ln, pos, ".%s ... %s", roffs[tok].name, cp);
1.1 schwarze 1851:
1.149 schwarze 1852: return ROFF_IGN;
1.1 schwarze 1853: }
1854:
1855: static enum rofferr
1.2 schwarze 1856: roff_block_sub(ROFF_ARGS)
1.1 schwarze 1857: {
1.2 schwarze 1858: enum rofft t;
1859: int i, j;
1860:
1861: /*
1862: * First check whether a custom macro exists at this level. If
1863: * it does, then check against it. This is some of groff's
1864: * stranger behaviours. If we encountered a custom end-scope
1865: * tag and that tag also happens to be a "real" macro, then we
1866: * need to try interpreting it again as a real macro. If it's
1867: * not, then return ignore. Else continue.
1868: */
1869:
1870: if (r->last->end) {
1.35 schwarze 1871: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.110 schwarze 1872: if (buf->buf[i] != r->last->end[j])
1.2 schwarze 1873: break;
1.1 schwarze 1874:
1.110 schwarze 1875: if (r->last->end[j] == '\0' &&
1876: (buf->buf[i] == '\0' ||
1877: buf->buf[i] == ' ' ||
1878: buf->buf[i] == '\t')) {
1.2 schwarze 1879: roffnode_pop(r);
1880: roffnode_cleanscope(r);
1.1 schwarze 1881:
1.110 schwarze 1882: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.35 schwarze 1883: i++;
1884:
1885: pos = i;
1.110 schwarze 1886: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1887: ROFF_MAX)
1.149 schwarze 1888: return ROFF_RERUN;
1889: return ROFF_IGN;
1.2 schwarze 1890: }
1.1 schwarze 1891: }
1892:
1.2 schwarze 1893: /*
1894: * If we have no custom end-query or lookup failed, then try
1895: * pulling it out of the hashtable.
1896: */
1.1 schwarze 1897:
1.110 schwarze 1898: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.1 schwarze 1899:
1.110 schwarze 1900: if (t != ROFF_cblock) {
1901: if (tok != ROFF_ig)
1902: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.149 schwarze 1903: return ROFF_IGN;
1.16 schwarze 1904: }
1.1 schwarze 1905:
1.2 schwarze 1906: assert(roffs[t].proc);
1.149 schwarze 1907: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1908: }
1909:
1910: static enum rofferr
1911: roff_block_text(ROFF_ARGS)
1912: {
1913:
1.110 schwarze 1914: if (tok != ROFF_ig)
1915: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.16 schwarze 1916:
1.149 schwarze 1917: return ROFF_IGN;
1.2 schwarze 1918: }
1919:
1920: static enum rofferr
1921: roff_cond_sub(ROFF_ARGS)
1922: {
1923: enum rofft t;
1.37 schwarze 1924: char *ep;
1.71 schwarze 1925: int rr;
1.2 schwarze 1926:
1927: rr = r->last->rule;
1.37 schwarze 1928: roffnode_cleanscope(r);
1.110 schwarze 1929: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.2 schwarze 1930:
1.37 schwarze 1931: /*
1.50 schwarze 1932: * Fully handle known macros when they are structurally
1933: * required or when the conditional evaluated to true.
1.5 schwarze 1934: */
1935:
1.110 schwarze 1936: if ((t != ROFF_MAX) &&
1937: (rr || roffs[t].flags & ROFFMAC_STRUCT)) {
1.50 schwarze 1938: assert(roffs[t].proc);
1.149 schwarze 1939: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.50 schwarze 1940: }
1.39 schwarze 1941:
1.69 schwarze 1942: /*
1943: * If `\}' occurs on a macro line without a preceding macro,
1944: * drop the line completely.
1945: */
1946:
1.110 schwarze 1947: ep = buf->buf + pos;
1948: if (ep[0] == '\\' && ep[1] == '}')
1.71 schwarze 1949: rr = 0;
1.69 schwarze 1950:
1.50 schwarze 1951: /* Always check for the closing delimiter `\}'. */
1.39 schwarze 1952:
1.110 schwarze 1953: while ((ep = strchr(ep, '\\')) != NULL) {
1954: if (*(++ep) == '}') {
1.70 schwarze 1955: *ep = '&';
1.110 schwarze 1956: roff_ccond(r, ln, ep - buf->buf - 1);
1.70 schwarze 1957: }
1.119 schwarze 1958: if (*ep != '\0')
1959: ++ep;
1.50 schwarze 1960: }
1.149 schwarze 1961: return rr ? ROFF_CONT : ROFF_IGN;
1.2 schwarze 1962: }
1963:
1964: static enum rofferr
1965: roff_cond_text(ROFF_ARGS)
1966: {
1.37 schwarze 1967: char *ep;
1.71 schwarze 1968: int rr;
1.2 schwarze 1969:
1970: rr = r->last->rule;
1.37 schwarze 1971: roffnode_cleanscope(r);
1.1 schwarze 1972:
1.110 schwarze 1973: ep = buf->buf + pos;
1974: while ((ep = strchr(ep, '\\')) != NULL) {
1975: if (*(++ep) == '}') {
1.70 schwarze 1976: *ep = '&';
1.110 schwarze 1977: roff_ccond(r, ln, ep - buf->buf - 1);
1.70 schwarze 1978: }
1.119 schwarze 1979: if (*ep != '\0')
1980: ++ep;
1.2 schwarze 1981: }
1.149 schwarze 1982: return rr ? ROFF_CONT : ROFF_IGN;
1.2 schwarze 1983: }
1984:
1.138 schwarze 1985: /* --- handling of numeric and conditional expressions -------------------- */
1986:
1.77 schwarze 1987: /*
1988: * Parse a single signed integer number. Stop at the first non-digit.
1989: * If there is at least one digit, return success and advance the
1990: * parse point, else return failure and let the parse point unchanged.
1991: * Ignore overflows, treat them just like the C language.
1992: */
1.56 schwarze 1993: static int
1.133 schwarze 1994: roff_getnum(const char *v, int *pos, int *res, int flags)
1.56 schwarze 1995: {
1.133 schwarze 1996: int myres, scaled, n, p;
1.79 schwarze 1997:
1998: if (NULL == res)
1999: res = &myres;
1.56 schwarze 2000:
2001: p = *pos;
2002: n = v[p] == '-';
1.133 schwarze 2003: if (n || v[p] == '+')
1.56 schwarze 2004: p++;
2005:
1.133 schwarze 2006: if (flags & ROFFNUM_WHITE)
2007: while (isspace((unsigned char)v[p]))
2008: p++;
2009:
1.56 schwarze 2010: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.77 schwarze 2011: *res = 10 * *res + v[p] - '0';
1.56 schwarze 2012: if (p == *pos + n)
2013: return 0;
2014:
2015: if (n)
2016: *res = -*res;
2017:
1.126 schwarze 2018: /* Each number may be followed by one optional scaling unit. */
2019:
2020: switch (v[p]) {
2021: case 'f':
1.133 schwarze 2022: scaled = *res * 65536;
1.126 schwarze 2023: break;
2024: case 'i':
1.133 schwarze 2025: scaled = *res * 240;
1.126 schwarze 2026: break;
2027: case 'c':
1.133 schwarze 2028: scaled = *res * 240 / 2.54;
1.126 schwarze 2029: break;
2030: case 'v':
2031: case 'P':
1.133 schwarze 2032: scaled = *res * 40;
1.126 schwarze 2033: break;
2034: case 'm':
2035: case 'n':
1.133 schwarze 2036: scaled = *res * 24;
1.126 schwarze 2037: break;
2038: case 'p':
1.133 schwarze 2039: scaled = *res * 10 / 3;
1.126 schwarze 2040: break;
2041: case 'u':
1.133 schwarze 2042: scaled = *res;
1.126 schwarze 2043: break;
2044: case 'M':
1.133 schwarze 2045: scaled = *res * 6 / 25;
1.126 schwarze 2046: break;
2047: default:
1.133 schwarze 2048: scaled = *res;
1.126 schwarze 2049: p--;
2050: break;
2051: }
1.133 schwarze 2052: if (flags & ROFFNUM_SCALE)
2053: *res = scaled;
1.126 schwarze 2054:
2055: *pos = p + 1;
1.149 schwarze 2056: return 1;
1.56 schwarze 2057: }
2058:
1.71 schwarze 2059: /*
2060: * Evaluate a string comparison condition.
2061: * The first character is the delimiter.
2062: * Succeed if the string up to its second occurrence
2063: * matches the string up to its third occurence.
2064: * Advance the cursor after the third occurrence
2065: * or lacking that, to the end of the line.
2066: */
2067: static int
2068: roff_evalstrcond(const char *v, int *pos)
2069: {
2070: const char *s1, *s2, *s3;
2071: int match;
2072:
2073: match = 0;
2074: s1 = v + *pos; /* initial delimiter */
2075: s2 = s1 + 1; /* for scanning the first string */
2076: s3 = strchr(s2, *s1); /* for scanning the second string */
2077:
2078: if (NULL == s3) /* found no middle delimiter */
2079: goto out;
2080:
2081: while ('\0' != *++s3) {
2082: if (*s2 != *s3) { /* mismatch */
2083: s3 = strchr(s3, *s1);
2084: break;
2085: }
2086: if (*s3 == *s1) { /* found the final delimiter */
2087: match = 1;
2088: break;
2089: }
2090: s2++;
2091: }
2092:
2093: out:
2094: if (NULL == s3)
2095: s3 = strchr(s2, '\0');
1.114 schwarze 2096: else if (*s3 != '\0')
1.71 schwarze 2097: s3++;
2098: *pos = s3 - v;
1.149 schwarze 2099: return match;
1.71 schwarze 2100: }
2101:
1.77 schwarze 2102: /*
2103: * Evaluate an optionally negated single character, numerical,
2104: * or string condition.
2105: */
1.71 schwarze 2106: static int
1.143 schwarze 2107: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.5 schwarze 2108: {
1.143 schwarze 2109: char *cp, *name;
2110: size_t sz;
1.113 schwarze 2111: int number, savepos, wanttrue;
1.5 schwarze 2112:
1.71 schwarze 2113: if ('!' == v[*pos]) {
2114: wanttrue = 0;
2115: (*pos)++;
2116: } else
2117: wanttrue = 1;
2118:
1.5 schwarze 2119: switch (v[*pos]) {
1.112 schwarze 2120: case '\0':
1.149 schwarze 2121: return 0;
1.80 schwarze 2122: case 'n':
2123: case 'o':
1.5 schwarze 2124: (*pos)++;
1.149 schwarze 2125: return wanttrue;
1.80 schwarze 2126: case 'c':
2127: case 'd':
2128: case 'e':
2129: case 't':
1.111 schwarze 2130: case 'v':
1.5 schwarze 2131: (*pos)++;
1.149 schwarze 2132: return !wanttrue;
1.143 schwarze 2133: case 'r':
2134: cp = name = v + ++*pos;
2135: sz = roff_getname(r, &cp, ln, *pos);
2136: *pos = cp - v;
1.149 schwarze 2137: return (sz && roff_hasregn(r, name, sz)) == wanttrue;
1.5 schwarze 2138: default:
2139: break;
2140: }
2141:
1.113 schwarze 2142: savepos = *pos;
1.133 schwarze 2143: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.149 schwarze 2144: return (number > 0) == wanttrue;
1.113 schwarze 2145: else if (*pos == savepos)
1.149 schwarze 2146: return roff_evalstrcond(v, pos) == wanttrue;
1.77 schwarze 2147: else
1.149 schwarze 2148: return 0;
1.5 schwarze 2149: }
2150:
1.2 schwarze 2151: static enum rofferr
1.21 schwarze 2152: roff_line_ignore(ROFF_ARGS)
1.6 schwarze 2153: {
1.30 schwarze 2154:
1.149 schwarze 2155: return ROFF_IGN;
1.21 schwarze 2156: }
2157:
2158: static enum rofferr
1.123 schwarze 2159: roff_insec(ROFF_ARGS)
2160: {
2161:
2162: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
2163: ln, ppos, roffs[tok].name);
1.149 schwarze 2164: return ROFF_IGN;
1.123 schwarze 2165: }
2166:
2167: static enum rofferr
2168: roff_unsupp(ROFF_ARGS)
2169: {
2170:
2171: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
2172: ln, ppos, roffs[tok].name);
1.149 schwarze 2173: return ROFF_IGN;
1.123 schwarze 2174: }
2175:
2176: static enum rofferr
1.2 schwarze 2177: roff_cond(ROFF_ARGS)
2178: {
1.46 schwarze 2179:
2180: roffnode_push(r, tok, NULL, ln, ppos);
1.2 schwarze 2181:
1.80 schwarze 2182: /*
1.35 schwarze 2183: * An `.el' has no conditional body: it will consume the value
2184: * of the current rstack entry set in prior `ie' calls or
1.80 schwarze 2185: * defaults to DENY.
1.35 schwarze 2186: *
2187: * If we're not an `el', however, then evaluate the conditional.
2188: */
1.1 schwarze 2189:
1.110 schwarze 2190: r->last->rule = tok == ROFF_el ?
1.80 schwarze 2191: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.110 schwarze 2192: roff_evalcond(r, ln, buf->buf, &pos);
1.2 schwarze 2193:
1.35 schwarze 2194: /*
2195: * An if-else will put the NEGATION of the current evaluated
2196: * conditional into the stack of rules.
2197: */
2198:
1.110 schwarze 2199: if (tok == ROFF_ie) {
1.96 schwarze 2200: if (r->rstackpos + 1 == r->rstacksz) {
2201: r->rstacksz += 16;
2202: r->rstack = mandoc_reallocarray(r->rstack,
2203: r->rstacksz, sizeof(int));
1.35 schwarze 2204: }
1.71 schwarze 2205: r->rstack[++r->rstackpos] = !r->last->rule;
1.2 schwarze 2206: }
1.5 schwarze 2207:
2208: /* If the parent has false as its rule, then so do we. */
2209:
1.71 schwarze 2210: if (r->last->parent && !r->last->parent->rule)
2211: r->last->rule = 0;
1.5 schwarze 2212:
2213: /*
1.46 schwarze 2214: * Determine scope.
2215: * If there is nothing on the line after the conditional,
2216: * not even whitespace, use next-line scope.
1.5 schwarze 2217: */
1.2 schwarze 2218:
1.110 schwarze 2219: if (buf->buf[pos] == '\0') {
1.46 schwarze 2220: r->last->endspan = 2;
2221: goto out;
2222: }
2223:
1.110 schwarze 2224: while (buf->buf[pos] == ' ')
1.46 schwarze 2225: pos++;
2226:
2227: /* An opening brace requests multiline scope. */
1.2 schwarze 2228:
1.110 schwarze 2229: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.2 schwarze 2230: r->last->endspan = -1;
2231: pos += 2;
1.144 schwarze 2232: while (buf->buf[pos] == ' ')
2233: pos++;
1.46 schwarze 2234: goto out;
1.80 schwarze 2235: }
1.2 schwarze 2236:
2237: /*
1.46 schwarze 2238: * Anything else following the conditional causes
2239: * single-line scope. Warn if the scope contains
2240: * nothing but trailing whitespace.
1.2 schwarze 2241: */
2242:
1.110 schwarze 2243: if (buf->buf[pos] == '\0')
1.89 schwarze 2244: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
2245: ln, ppos, roffs[tok].name);
1.2 schwarze 2246:
1.46 schwarze 2247: r->last->endspan = 1;
1.1 schwarze 2248:
1.46 schwarze 2249: out:
1.2 schwarze 2250: *offs = pos;
1.149 schwarze 2251: return ROFF_RERUN;
1.1 schwarze 2252: }
2253:
1.2 schwarze 2254: static enum rofferr
1.7 schwarze 2255: roff_ds(ROFF_ARGS)
2256: {
1.85 schwarze 2257: char *string;
2258: const char *name;
2259: size_t namesz;
1.10 schwarze 2260:
1.123 schwarze 2261: /* Ignore groff compatibility mode for now. */
2262:
2263: if (tok == ROFF_ds1)
2264: tok = ROFF_ds;
2265: else if (tok == ROFF_as1)
2266: tok = ROFF_as;
2267:
1.10 schwarze 2268: /*
1.85 schwarze 2269: * The first word is the name of the string.
2270: * If it is empty or terminated by an escape sequence,
2271: * abort the `ds' request without defining anything.
1.10 schwarze 2272: */
1.7 schwarze 2273:
1.110 schwarze 2274: name = string = buf->buf + pos;
2275: if (*name == '\0')
1.149 schwarze 2276: return ROFF_IGN;
1.7 schwarze 2277:
1.85 schwarze 2278: namesz = roff_getname(r, &string, ln, pos);
1.110 schwarze 2279: if (name[namesz] == '\\')
1.149 schwarze 2280: return ROFF_IGN;
1.85 schwarze 2281:
2282: /* Read past the initial double-quote, if any. */
1.110 schwarze 2283: if (*string == '"')
1.7 schwarze 2284: string++;
2285:
1.10 schwarze 2286: /* The rest is the value. */
1.85 schwarze 2287: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2288: ROFF_as == tok);
1.149 schwarze 2289: return ROFF_IGN;
1.7 schwarze 2290: }
2291:
1.77 schwarze 2292: /*
2293: * Parse a single operator, one or two characters long.
2294: * If the operator is recognized, return success and advance the
2295: * parse point, else return failure and let the parse point unchanged.
2296: */
2297: static int
2298: roff_getop(const char *v, int *pos, char *res)
2299: {
2300:
2301: *res = v[*pos];
2302:
2303: switch (*res) {
1.80 schwarze 2304: case '+':
2305: case '-':
2306: case '*':
2307: case '/':
2308: case '%':
2309: case '&':
2310: case ':':
1.77 schwarze 2311: break;
2312: case '<':
2313: switch (v[*pos + 1]) {
1.80 schwarze 2314: case '=':
1.77 schwarze 2315: *res = 'l';
2316: (*pos)++;
2317: break;
1.80 schwarze 2318: case '>':
1.77 schwarze 2319: *res = '!';
2320: (*pos)++;
2321: break;
1.80 schwarze 2322: case '?':
1.77 schwarze 2323: *res = 'i';
2324: (*pos)++;
2325: break;
2326: default:
2327: break;
2328: }
2329: break;
2330: case '>':
2331: switch (v[*pos + 1]) {
1.80 schwarze 2332: case '=':
1.77 schwarze 2333: *res = 'g';
2334: (*pos)++;
2335: break;
1.80 schwarze 2336: case '?':
1.77 schwarze 2337: *res = 'a';
2338: (*pos)++;
2339: break;
2340: default:
2341: break;
2342: }
2343: break;
2344: case '=':
2345: if ('=' == v[*pos + 1])
2346: (*pos)++;
2347: break;
2348: default:
1.149 schwarze 2349: return 0;
1.77 schwarze 2350: }
2351: (*pos)++;
2352:
1.149 schwarze 2353: return *res;
1.77 schwarze 2354: }
2355:
2356: /*
2357: * Evaluate either a parenthesized numeric expression
2358: * or a single signed integer number.
2359: */
2360: static int
1.106 schwarze 2361: roff_evalpar(struct roff *r, int ln,
1.133 schwarze 2362: const char *v, int *pos, int *res, int flags)
1.77 schwarze 2363: {
2364:
2365: if ('(' != v[*pos])
1.149 schwarze 2366: return roff_getnum(v, pos, res, flags);
1.77 schwarze 2367:
2368: (*pos)++;
1.133 schwarze 2369: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.149 schwarze 2370: return 0;
1.77 schwarze 2371:
1.79 schwarze 2372: /*
2373: * Omission of the closing parenthesis
2374: * is an error in validation mode,
2375: * but ignored in evaluation mode.
2376: */
2377:
1.77 schwarze 2378: if (')' == v[*pos])
2379: (*pos)++;
1.79 schwarze 2380: else if (NULL == res)
1.149 schwarze 2381: return 0;
1.77 schwarze 2382:
1.149 schwarze 2383: return 1;
1.77 schwarze 2384: }
2385:
2386: /*
2387: * Evaluate a complete numeric expression.
2388: * Proceed left to right, there is no concept of precedence.
2389: */
2390: static int
1.106 schwarze 2391: roff_evalnum(struct roff *r, int ln, const char *v,
1.133 schwarze 2392: int *pos, int *res, int flags)
1.77 schwarze 2393: {
2394: int mypos, operand2;
2395: char operator;
2396:
2397: if (NULL == pos) {
2398: mypos = 0;
2399: pos = &mypos;
2400: }
2401:
1.133 schwarze 2402: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2403: while (isspace((unsigned char)v[*pos]))
2404: (*pos)++;
2405:
1.133 schwarze 2406: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.149 schwarze 2407: return 0;
1.77 schwarze 2408:
2409: while (1) {
1.133 schwarze 2410: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2411: while (isspace((unsigned char)v[*pos]))
2412: (*pos)++;
2413:
2414: if ( ! roff_getop(v, pos, &operator))
2415: break;
2416:
1.133 schwarze 2417: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2418: while (isspace((unsigned char)v[*pos]))
2419: (*pos)++;
2420:
1.133 schwarze 2421: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.149 schwarze 2422: return 0;
1.77 schwarze 2423:
1.133 schwarze 2424: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2425: while (isspace((unsigned char)v[*pos]))
2426: (*pos)++;
1.79 schwarze 2427:
2428: if (NULL == res)
2429: continue;
1.77 schwarze 2430:
2431: switch (operator) {
1.80 schwarze 2432: case '+':
1.77 schwarze 2433: *res += operand2;
2434: break;
1.80 schwarze 2435: case '-':
1.77 schwarze 2436: *res -= operand2;
2437: break;
1.80 schwarze 2438: case '*':
1.77 schwarze 2439: *res *= operand2;
2440: break;
1.80 schwarze 2441: case '/':
1.116 schwarze 2442: if (operand2 == 0) {
1.106 schwarze 2443: mandoc_msg(MANDOCERR_DIVZERO,
2444: r->parse, ln, *pos, v);
2445: *res = 0;
2446: break;
2447: }
1.77 schwarze 2448: *res /= operand2;
2449: break;
1.80 schwarze 2450: case '%':
1.116 schwarze 2451: if (operand2 == 0) {
2452: mandoc_msg(MANDOCERR_DIVZERO,
2453: r->parse, ln, *pos, v);
2454: *res = 0;
2455: break;
2456: }
1.77 schwarze 2457: *res %= operand2;
2458: break;
1.80 schwarze 2459: case '<':
1.77 schwarze 2460: *res = *res < operand2;
2461: break;
1.80 schwarze 2462: case '>':
1.77 schwarze 2463: *res = *res > operand2;
2464: break;
1.80 schwarze 2465: case 'l':
1.77 schwarze 2466: *res = *res <= operand2;
2467: break;
1.80 schwarze 2468: case 'g':
1.77 schwarze 2469: *res = *res >= operand2;
2470: break;
1.80 schwarze 2471: case '=':
1.77 schwarze 2472: *res = *res == operand2;
2473: break;
1.80 schwarze 2474: case '!':
1.77 schwarze 2475: *res = *res != operand2;
2476: break;
1.80 schwarze 2477: case '&':
1.77 schwarze 2478: *res = *res && operand2;
2479: break;
1.80 schwarze 2480: case ':':
1.77 schwarze 2481: *res = *res || operand2;
2482: break;
1.80 schwarze 2483: case 'i':
1.77 schwarze 2484: if (operand2 < *res)
2485: *res = operand2;
2486: break;
1.80 schwarze 2487: case 'a':
1.77 schwarze 2488: if (operand2 > *res)
2489: *res = operand2;
2490: break;
2491: default:
2492: abort();
2493: }
2494: }
1.149 schwarze 2495: return 1;
1.77 schwarze 2496: }
2497:
1.138 schwarze 2498: /* --- register management ------------------------------------------------ */
2499:
1.52 schwarze 2500: void
1.60 schwarze 2501: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.41 schwarze 2502: {
1.52 schwarze 2503: struct roffreg *reg;
2504:
2505: /* Search for an existing register with the same name. */
2506: reg = r->regtab;
2507:
2508: while (reg && strcmp(name, reg->key.p))
2509: reg = reg->next;
1.41 schwarze 2510:
1.52 schwarze 2511: if (NULL == reg) {
2512: /* Create a new register. */
2513: reg = mandoc_malloc(sizeof(struct roffreg));
2514: reg->key.p = mandoc_strdup(name);
2515: reg->key.sz = strlen(name);
1.60 schwarze 2516: reg->val = 0;
1.52 schwarze 2517: reg->next = r->regtab;
2518: r->regtab = reg;
2519: }
2520:
1.60 schwarze 2521: if ('+' == sign)
2522: reg->val += val;
2523: else if ('-' == sign)
2524: reg->val -= val;
2525: else
2526: reg->val = val;
1.41 schwarze 2527: }
2528:
1.65 schwarze 2529: /*
2530: * Handle some predefined read-only number registers.
2531: * For now, return -1 if the requested register is not predefined;
2532: * in case a predefined read-only register having the value -1
2533: * were to turn up, another special value would have to be chosen.
2534: */
2535: static int
1.145 schwarze 2536: roff_getregro(const struct roff *r, const char *name)
1.65 schwarze 2537: {
2538:
2539: switch (*name) {
1.145 schwarze 2540: case '$': /* Number of arguments of the last macro evaluated. */
1.149 schwarze 2541: return r->argc;
1.80 schwarze 2542: case 'A': /* ASCII approximation mode is always off. */
1.149 schwarze 2543: return 0;
1.80 schwarze 2544: case 'g': /* Groff compatibility mode is always on. */
1.149 schwarze 2545: return 1;
1.80 schwarze 2546: case 'H': /* Fixed horizontal resolution. */
1.149 schwarze 2547: return 24;
1.80 schwarze 2548: case 'j': /* Always adjust left margin only. */
1.149 schwarze 2549: return 0;
1.80 schwarze 2550: case 'T': /* Some output device is always defined. */
1.149 schwarze 2551: return 1;
1.80 schwarze 2552: case 'V': /* Fixed vertical resolution. */
1.149 schwarze 2553: return 40;
1.65 schwarze 2554: default:
1.149 schwarze 2555: return -1;
1.65 schwarze 2556: }
2557: }
2558:
1.53 schwarze 2559: int
1.52 schwarze 2560: roff_getreg(const struct roff *r, const char *name)
1.41 schwarze 2561: {
1.52 schwarze 2562: struct roffreg *reg;
1.65 schwarze 2563: int val;
2564:
2565: if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) {
1.145 schwarze 2566: val = roff_getregro(r, name + 1);
1.65 schwarze 2567: if (-1 != val)
1.149 schwarze 2568: return val;
1.65 schwarze 2569: }
1.52 schwarze 2570:
2571: for (reg = r->regtab; reg; reg = reg->next)
2572: if (0 == strcmp(name, reg->key.p))
1.149 schwarze 2573: return reg->val;
1.53 schwarze 2574:
1.149 schwarze 2575: return 0;
1.53 schwarze 2576: }
2577:
2578: static int
2579: roff_getregn(const struct roff *r, const char *name, size_t len)
2580: {
2581: struct roffreg *reg;
1.65 schwarze 2582: int val;
2583:
2584: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2585: val = roff_getregro(r, name + 1);
1.65 schwarze 2586: if (-1 != val)
1.149 schwarze 2587: return val;
1.65 schwarze 2588: }
1.53 schwarze 2589:
2590: for (reg = r->regtab; reg; reg = reg->next)
2591: if (len == reg->key.sz &&
2592: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 2593: return reg->val;
1.143 schwarze 2594:
1.149 schwarze 2595: return 0;
1.143 schwarze 2596: }
2597:
2598: static int
2599: roff_hasregn(const struct roff *r, const char *name, size_t len)
2600: {
2601: struct roffreg *reg;
2602: int val;
2603:
2604: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2605: val = roff_getregro(r, name + 1);
1.143 schwarze 2606: if (-1 != val)
1.149 schwarze 2607: return 1;
1.143 schwarze 2608: }
2609:
2610: for (reg = r->regtab; reg; reg = reg->next)
2611: if (len == reg->key.sz &&
2612: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 2613: return 1;
1.41 schwarze 2614:
1.149 schwarze 2615: return 0;
1.41 schwarze 2616: }
2617:
1.52 schwarze 2618: static void
2619: roff_freereg(struct roffreg *reg)
1.41 schwarze 2620: {
1.52 schwarze 2621: struct roffreg *old_reg;
1.41 schwarze 2622:
1.52 schwarze 2623: while (NULL != reg) {
2624: free(reg->key.p);
2625: old_reg = reg;
2626: reg = reg->next;
2627: free(old_reg);
2628: }
1.41 schwarze 2629: }
1.7 schwarze 2630:
2631: static enum rofferr
1.6 schwarze 2632: roff_nr(ROFF_ARGS)
1.1 schwarze 2633: {
1.85 schwarze 2634: char *key, *val;
2635: size_t keysz;
1.37 schwarze 2636: int iv;
1.60 schwarze 2637: char sign;
1.6 schwarze 2638:
1.110 schwarze 2639: key = val = buf->buf + pos;
2640: if (*key == '\0')
1.149 schwarze 2641: return ROFF_IGN;
1.85 schwarze 2642:
2643: keysz = roff_getname(r, &val, ln, pos);
1.110 schwarze 2644: if (key[keysz] == '\\')
1.149 schwarze 2645: return ROFF_IGN;
1.85 schwarze 2646: key[keysz] = '\0';
1.6 schwarze 2647:
1.60 schwarze 2648: sign = *val;
1.110 schwarze 2649: if (sign == '+' || sign == '-')
1.60 schwarze 2650: val++;
2651:
1.133 schwarze 2652: if (roff_evalnum(r, ln, val, NULL, &iv, ROFFNUM_SCALE))
1.77 schwarze 2653: roff_setreg(r, key, iv, sign);
1.1 schwarze 2654:
1.149 schwarze 2655: return ROFF_IGN;
1.76 schwarze 2656: }
2657:
2658: static enum rofferr
2659: roff_rr(ROFF_ARGS)
2660: {
2661: struct roffreg *reg, **prev;
1.85 schwarze 2662: char *name, *cp;
2663: size_t namesz;
1.76 schwarze 2664:
1.110 schwarze 2665: name = cp = buf->buf + pos;
2666: if (*name == '\0')
1.149 schwarze 2667: return ROFF_IGN;
1.85 schwarze 2668: namesz = roff_getname(r, &cp, ln, pos);
2669: name[namesz] = '\0';
1.76 schwarze 2670:
2671: prev = &r->regtab;
2672: while (1) {
2673: reg = *prev;
1.110 schwarze 2674: if (reg == NULL || !strcmp(name, reg->key.p))
1.76 schwarze 2675: break;
2676: prev = ®->next;
2677: }
1.110 schwarze 2678: if (reg != NULL) {
1.76 schwarze 2679: *prev = reg->next;
2680: free(reg->key.p);
2681: free(reg);
2682: }
1.149 schwarze 2683: return ROFF_IGN;
1.29 schwarze 2684: }
2685:
1.138 schwarze 2686: /* --- handler functions for roff requests -------------------------------- */
2687:
1.29 schwarze 2688: static enum rofferr
2689: roff_rm(ROFF_ARGS)
2690: {
2691: const char *name;
2692: char *cp;
1.85 schwarze 2693: size_t namesz;
1.29 schwarze 2694:
1.110 schwarze 2695: cp = buf->buf + pos;
2696: while (*cp != '\0') {
1.85 schwarze 2697: name = cp;
1.110 schwarze 2698: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.85 schwarze 2699: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.110 schwarze 2700: if (name[namesz] == '\\')
1.85 schwarze 2701: break;
1.29 schwarze 2702: }
1.149 schwarze 2703: return ROFF_IGN;
1.51 schwarze 2704: }
2705:
2706: static enum rofferr
2707: roff_it(ROFF_ARGS)
2708: {
2709: int iv;
2710:
2711: /* Parse the number of lines. */
1.133 schwarze 2712:
2713: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.95 schwarze 2714: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.110 schwarze 2715: ln, ppos, buf->buf + 1);
1.149 schwarze 2716: return ROFF_IGN;
1.51 schwarze 2717: }
2718:
1.134 schwarze 2719: while (isspace((unsigned char)buf->buf[pos]))
2720: pos++;
2721:
2722: /*
2723: * Arm the input line trap.
2724: * Special-casing "an-trap" is an ugly workaround to cope
2725: * with DocBook stupidly fiddling with man(7) internals.
2726: */
1.133 schwarze 2727:
1.51 schwarze 2728: roffit_lines = iv;
1.134 schwarze 2729: roffit_macro = mandoc_strdup(iv != 1 ||
2730: strcmp(buf->buf + pos, "an-trap") ?
2731: buf->buf + pos : "br");
1.149 schwarze 2732: return ROFF_IGN;
1.47 schwarze 2733: }
2734:
2735: static enum rofferr
2736: roff_Dd(ROFF_ARGS)
2737: {
2738: const char *const *cp;
2739:
1.99 schwarze 2740: if ((r->options & (MPARSE_MDOC | MPARSE_QUICK)) == 0)
1.47 schwarze 2741: for (cp = __mdoc_reserved; *cp; cp++)
2742: roff_setstr(r, *cp, NULL, 0);
2743:
1.99 schwarze 2744: if (r->format == 0)
2745: r->format = MPARSE_MDOC;
2746:
1.149 schwarze 2747: return ROFF_CONT;
1.47 schwarze 2748: }
2749:
2750: static enum rofferr
2751: roff_TH(ROFF_ARGS)
2752: {
2753: const char *const *cp;
2754:
1.99 schwarze 2755: if ((r->options & MPARSE_QUICK) == 0)
1.47 schwarze 2756: for (cp = __man_reserved; *cp; cp++)
2757: roff_setstr(r, *cp, NULL, 0);
2758:
1.99 schwarze 2759: if (r->format == 0)
2760: r->format = MPARSE_MAN;
2761:
1.149 schwarze 2762: return ROFF_CONT;
1.14 schwarze 2763: }
2764:
2765: static enum rofferr
1.27 schwarze 2766: roff_TE(ROFF_ARGS)
2767: {
2768:
2769: if (NULL == r->tbl)
1.94 schwarze 2770: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2771: ln, ppos, "TE");
1.130 schwarze 2772: else if ( ! tbl_end(&r->tbl)) {
2773: free(buf->buf);
2774: buf->buf = mandoc_strdup(".sp");
2775: buf->sz = 4;
1.149 schwarze 2776: return ROFF_REPARSE;
1.130 schwarze 2777: }
1.149 schwarze 2778: return ROFF_IGN;
1.27 schwarze 2779: }
2780:
2781: static enum rofferr
2782: roff_T_(ROFF_ARGS)
2783: {
2784:
2785: if (NULL == r->tbl)
1.94 schwarze 2786: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2787: ln, ppos, "T&");
1.27 schwarze 2788: else
2789: tbl_restart(ppos, ln, r->tbl);
2790:
1.149 schwarze 2791: return ROFF_IGN;
1.27 schwarze 2792: }
2793:
1.102 schwarze 2794: /*
2795: * Handle in-line equation delimiters.
2796: */
2797: static enum rofferr
1.110 schwarze 2798: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.41 schwarze 2799: {
1.105 schwarze 2800: char *cp1, *cp2;
2801: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.41 schwarze 2802:
1.102 schwarze 2803: /*
2804: * Outside equations, look for an opening delimiter.
2805: * If we are inside an equation, we already know it is
2806: * in-line, or this function wouldn't have been called;
2807: * so look for a closing delimiter.
2808: */
2809:
1.110 schwarze 2810: cp1 = buf->buf + pos;
1.102 schwarze 2811: cp2 = strchr(cp1, r->eqn == NULL ?
2812: r->last_eqn->odelim : r->last_eqn->cdelim);
2813: if (cp2 == NULL)
1.149 schwarze 2814: return ROFF_CONT;
1.102 schwarze 2815:
1.105 schwarze 2816: *cp2++ = '\0';
2817: bef_pr = bef_nl = aft_nl = aft_pr = "";
2818:
2819: /* Handle preceding text, protecting whitespace. */
2820:
1.110 schwarze 2821: if (*buf->buf != '\0') {
1.105 schwarze 2822: if (r->eqn == NULL)
2823: bef_pr = "\\&";
2824: bef_nl = "\n";
2825: }
2826:
2827: /*
2828: * Prepare replacing the delimiter with an equation macro
2829: * and drop leading white space from the equation.
2830: */
1.102 schwarze 2831:
1.105 schwarze 2832: if (r->eqn == NULL) {
2833: while (*cp2 == ' ')
2834: cp2++;
2835: mac = ".EQ";
2836: } else
2837: mac = ".EN";
2838:
2839: /* Handle following text, protecting whitespace. */
2840:
2841: if (*cp2 != '\0') {
2842: aft_nl = "\n";
2843: if (r->eqn != NULL)
2844: aft_pr = "\\&";
2845: }
2846:
2847: /* Do the actual replacement. */
2848:
1.110 schwarze 2849: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.105 schwarze 2850: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.110 schwarze 2851: free(buf->buf);
2852: buf->buf = cp1;
1.102 schwarze 2853:
2854: /* Toggle the in-line state of the eqn subsystem. */
2855:
2856: r->eqn_inline = r->eqn == NULL;
1.149 schwarze 2857: return ROFF_REPARSE;
1.41 schwarze 2858: }
2859:
1.107 schwarze 2860: static enum rofferr
2861: roff_EQ(ROFF_ARGS)
1.32 schwarze 2862: {
1.41 schwarze 2863: struct eqn_node *e;
1.32 schwarze 2864:
1.110 schwarze 2865: assert(r->eqn == NULL);
1.107 schwarze 2866: e = eqn_alloc(ppos, ln, r->parse);
1.32 schwarze 2867:
1.102 schwarze 2868: if (r->last_eqn) {
1.32 schwarze 2869: r->last_eqn->next = e;
1.102 schwarze 2870: e->delim = r->last_eqn->delim;
2871: e->odelim = r->last_eqn->odelim;
2872: e->cdelim = r->last_eqn->cdelim;
2873: } else
1.32 schwarze 2874: r->first_eqn = r->last_eqn = e;
2875:
2876: r->eqn = r->last_eqn = e;
1.41 schwarze 2877:
1.110 schwarze 2878: if (buf->buf[pos] != '\0')
1.107 schwarze 2879: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 2880: ".EQ %s", buf->buf + pos);
1.41 schwarze 2881:
1.149 schwarze 2882: return ROFF_IGN;
1.32 schwarze 2883: }
2884:
2885: static enum rofferr
2886: roff_EN(ROFF_ARGS)
2887: {
2888:
1.94 schwarze 2889: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
1.149 schwarze 2890: return ROFF_IGN;
1.32 schwarze 2891: }
2892:
2893: static enum rofferr
1.27 schwarze 2894: roff_TS(ROFF_ARGS)
2895: {
1.49 schwarze 2896: struct tbl_node *tbl;
1.27 schwarze 2897:
2898: if (r->tbl) {
1.94 schwarze 2899: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
2900: ln, ppos, "TS breaks TS");
1.41 schwarze 2901: tbl_end(&r->tbl);
1.27 schwarze 2902: }
2903:
1.49 schwarze 2904: tbl = tbl_alloc(ppos, ln, r->parse);
1.27 schwarze 2905:
2906: if (r->last_tbl)
1.49 schwarze 2907: r->last_tbl->next = tbl;
1.27 schwarze 2908: else
1.49 schwarze 2909: r->first_tbl = r->last_tbl = tbl;
1.27 schwarze 2910:
1.49 schwarze 2911: r->tbl = r->last_tbl = tbl;
1.149 schwarze 2912: return ROFF_IGN;
1.123 schwarze 2913: }
2914:
2915: static enum rofferr
2916: roff_brp(ROFF_ARGS)
2917: {
2918:
2919: buf->buf[pos - 1] = '\0';
1.149 schwarze 2920: return ROFF_CONT;
1.27 schwarze 2921: }
2922:
2923: static enum rofferr
1.48 schwarze 2924: roff_cc(ROFF_ARGS)
2925: {
2926: const char *p;
2927:
1.110 schwarze 2928: p = buf->buf + pos;
1.48 schwarze 2929:
1.110 schwarze 2930: if (*p == '\0' || (r->control = *p++) == '.')
1.48 schwarze 2931: r->control = 0;
2932:
1.110 schwarze 2933: if (*p != '\0')
1.132 schwarze 2934: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
2935: ln, p - buf->buf, "cc ... %s", p);
1.48 schwarze 2936:
1.149 schwarze 2937: return ROFF_IGN;
1.48 schwarze 2938: }
2939:
2940: static enum rofferr
1.42 schwarze 2941: roff_tr(ROFF_ARGS)
2942: {
2943: const char *p, *first, *second;
2944: size_t fsz, ssz;
2945: enum mandoc_esc esc;
2946:
1.110 schwarze 2947: p = buf->buf + pos;
1.42 schwarze 2948:
1.110 schwarze 2949: if (*p == '\0') {
1.132 schwarze 2950: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.149 schwarze 2951: return ROFF_IGN;
1.42 schwarze 2952: }
2953:
1.110 schwarze 2954: while (*p != '\0') {
1.42 schwarze 2955: fsz = ssz = 1;
2956:
2957: first = p++;
1.110 schwarze 2958: if (*first == '\\') {
1.42 schwarze 2959: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 2960: if (esc == ESCAPE_ERROR) {
1.92 schwarze 2961: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 2962: ln, (int)(p - buf->buf), first);
1.149 schwarze 2963: return ROFF_IGN;
1.42 schwarze 2964: }
2965: fsz = (size_t)(p - first);
2966: }
2967:
2968: second = p++;
1.110 schwarze 2969: if (*second == '\\') {
1.42 schwarze 2970: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 2971: if (esc == ESCAPE_ERROR) {
1.92 schwarze 2972: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 2973: ln, (int)(p - buf->buf), second);
1.149 schwarze 2974: return ROFF_IGN;
1.42 schwarze 2975: }
2976: ssz = (size_t)(p - second);
1.110 schwarze 2977: } else if (*second == '\0') {
1.132 schwarze 2978: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
2979: ln, first - buf->buf, "tr %s", first);
1.42 schwarze 2980: second = " ";
2981: p--;
2982: }
2983:
2984: if (fsz > 1) {
1.80 schwarze 2985: roff_setstrn(&r->xmbtab, first, fsz,
2986: second, ssz, 0);
1.42 schwarze 2987: continue;
2988: }
2989:
1.110 schwarze 2990: if (r->xtab == NULL)
1.80 schwarze 2991: r->xtab = mandoc_calloc(128,
2992: sizeof(struct roffstr));
1.42 schwarze 2993:
2994: free(r->xtab[(int)*first].p);
2995: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
2996: r->xtab[(int)*first].sz = ssz;
2997: }
2998:
1.149 schwarze 2999: return ROFF_IGN;
1.42 schwarze 3000: }
3001:
3002: static enum rofferr
1.14 schwarze 3003: roff_so(ROFF_ARGS)
3004: {
1.121 schwarze 3005: char *name, *cp;
1.15 schwarze 3006:
1.110 schwarze 3007: name = buf->buf + pos;
1.97 schwarze 3008: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.14 schwarze 3009:
1.22 schwarze 3010: /*
3011: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3012: * opening anything that's not in our cwd or anything beneath
3013: * it. Thus, explicitly disallow traversing up the file-system
3014: * or using absolute paths.
3015: */
3016:
1.110 schwarze 3017: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.83 schwarze 3018: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
3019: ".so %s", name);
1.121 schwarze 3020: buf->sz = mandoc_asprintf(&cp,
3021: ".sp\nSee the file %s.\n.sp", name) + 1;
3022: free(buf->buf);
3023: buf->buf = cp;
3024: *offs = 0;
1.149 schwarze 3025: return ROFF_REPARSE;
1.14 schwarze 3026: }
3027:
3028: *offs = pos;
1.149 schwarze 3029: return ROFF_SO;
1.7 schwarze 3030: }
3031:
1.138 schwarze 3032: /* --- user defined strings and macros ------------------------------------ */
3033:
1.16 schwarze 3034: static enum rofferr
3035: roff_userdef(ROFF_ARGS)
1.12 schwarze 3036: {
1.135 schwarze 3037: const char *arg[9], *ap;
1.16 schwarze 3038: char *cp, *n1, *n2;
1.164 ! schwarze 3039: int expand_count, i, ib, ie;
1.135 schwarze 3040: size_t asz, rsz;
1.12 schwarze 3041:
1.16 schwarze 3042: /*
3043: * Collect pointers to macro argument strings
1.61 schwarze 3044: * and NUL-terminate them.
1.16 schwarze 3045: */
1.135 schwarze 3046:
1.145 schwarze 3047: r->argc = 0;
1.110 schwarze 3048: cp = buf->buf + pos;
1.145 schwarze 3049: for (i = 0; i < 9; i++) {
3050: if (*cp == '\0')
3051: arg[i] = "";
3052: else {
3053: arg[i] = mandoc_getarg(r->parse, &cp, ln, &pos);
3054: r->argc = i + 1;
3055: }
3056: }
1.16 schwarze 3057:
3058: /*
3059: * Expand macro arguments.
1.12 schwarze 3060: */
1.135 schwarze 3061:
3062: buf->sz = strlen(r->current_string) + 1;
1.164 ! schwarze 3063: n1 = n2 = cp = mandoc_malloc(buf->sz);
1.135 schwarze 3064: memcpy(n1, r->current_string, buf->sz);
1.164 ! schwarze 3065: expand_count = 0;
1.135 schwarze 3066: while (*cp != '\0') {
3067:
3068: /* Scan ahead for the next argument invocation. */
3069:
3070: if (*cp++ != '\\')
3071: continue;
3072: if (*cp++ != '$')
3073: continue;
1.146 schwarze 3074: if (*cp == '*') { /* \\$* inserts all arguments */
3075: ib = 0;
3076: ie = r->argc - 1;
3077: } else { /* \\$1 .. \\$9 insert one argument */
3078: ib = ie = *cp - '1';
3079: if (ib < 0 || ib > 8)
3080: continue;
3081: }
1.135 schwarze 3082: cp -= 2;
1.164 ! schwarze 3083:
! 3084: /*
! 3085: * Prevent infinite recursion.
! 3086: */
! 3087:
! 3088: if (cp >= n2)
! 3089: expand_count = 1;
! 3090: else if (++expand_count > EXPAND_LIMIT) {
! 3091: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
! 3092: ln, (int)(cp - n1), NULL);
! 3093: return ROFF_IGN;
! 3094: }
1.135 schwarze 3095:
3096: /*
3097: * Determine the size of the expanded argument,
3098: * taking escaping of quotes into account.
3099: */
3100:
1.146 schwarze 3101: asz = ie > ib ? ie - ib : 0; /* for blanks */
3102: for (i = ib; i <= ie; i++) {
3103: for (ap = arg[i]; *ap != '\0'; ap++) {
3104: asz++;
3105: if (*ap == '"')
3106: asz += 3;
3107: }
1.135 schwarze 3108: }
3109: if (asz != 3) {
3110:
3111: /*
3112: * Determine the size of the rest of the
3113: * unexpanded macro, including the NUL.
3114: */
3115:
3116: rsz = buf->sz - (cp - n1) - 3;
3117:
3118: /*
3119: * When shrinking, move before
3120: * releasing the storage.
3121: */
3122:
3123: if (asz < 3)
3124: memmove(cp + asz, cp + 3, rsz);
3125:
3126: /*
3127: * Resize the storage for the macro
3128: * and readjust the parse pointer.
3129: */
3130:
3131: buf->sz += asz - 3;
3132: n2 = mandoc_realloc(n1, buf->sz);
3133: cp = n2 + (cp - n1);
3134: n1 = n2;
3135:
3136: /*
3137: * When growing, make room
3138: * for the expanded argument.
3139: */
3140:
3141: if (asz > 3)
3142: memmove(cp + asz, cp + 3, rsz);
3143: }
3144:
3145: /* Copy the expanded argument, escaping quotes. */
3146:
3147: n2 = cp;
1.146 schwarze 3148: for (i = ib; i <= ie; i++) {
3149: for (ap = arg[i]; *ap != '\0'; ap++) {
3150: if (*ap == '"') {
3151: memcpy(n2, "\\(dq", 4);
3152: n2 += 4;
3153: } else
3154: *n2++ = *ap;
3155: }
3156: if (i < ie)
3157: *n2++ = ' ';
1.16 schwarze 3158: }
1.12 schwarze 3159: }
3160:
1.16 schwarze 3161: /*
3162: * Replace the macro invocation
3163: * by the expanded macro.
3164: */
1.135 schwarze 3165:
1.110 schwarze 3166: free(buf->buf);
3167: buf->buf = n1;
1.120 schwarze 3168: *offs = 0;
1.16 schwarze 3169:
1.149 schwarze 3170: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
3171: ROFF_REPARSE : ROFF_APPEND;
1.12 schwarze 3172: }
1.28 schwarze 3173:
1.85 schwarze 3174: static size_t
1.28 schwarze 3175: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3176: {
3177: char *name, *cp;
1.85 schwarze 3178: size_t namesz;
1.28 schwarze 3179:
3180: name = *cpp;
3181: if ('\0' == *name)
1.149 schwarze 3182: return 0;
1.28 schwarze 3183:
1.85 schwarze 3184: /* Read until end of name and terminate it with NUL. */
3185: for (cp = name; 1; cp++) {
3186: if ('\0' == *cp || ' ' == *cp) {
3187: namesz = cp - name;
3188: break;
3189: }
1.28 schwarze 3190: if ('\\' != *cp)
3191: continue;
1.88 schwarze 3192: namesz = cp - name;
3193: if ('{' == cp[1] || '}' == cp[1])
3194: break;
1.28 schwarze 3195: cp++;
3196: if ('\\' == *cp)
3197: continue;
1.97 schwarze 3198: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3199: "%.*s", (int)(cp - name + 1), name);
1.85 schwarze 3200: mandoc_escape((const char **)&cp, NULL, NULL);
3201: break;
1.28 schwarze 3202: }
3203:
3204: /* Read past spaces. */
3205: while (' ' == *cp)
3206: cp++;
3207:
3208: *cpp = cp;
1.149 schwarze 3209: return namesz;
1.28 schwarze 3210: }
3211:
1.16 schwarze 3212: /*
3213: * Store *string into the user-defined string called *name.
3214: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.66 schwarze 3215: * append == 0: replace mode
3216: * append == 1: single-line append mode
3217: * append == 2: multiline append mode, append '\n' after each call
1.16 schwarze 3218: */
1.8 schwarze 3219: static void
1.16 schwarze 3220: roff_setstr(struct roff *r, const char *name, const char *string,
1.66 schwarze 3221: int append)
1.7 schwarze 3222: {
1.42 schwarze 3223:
3224: roff_setstrn(&r->strtab, name, strlen(name), string,
1.80 schwarze 3225: string ? strlen(string) : 0, append);
1.42 schwarze 3226: }
3227:
3228: static void
3229: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.66 schwarze 3230: const char *string, size_t stringsz, int append)
1.42 schwarze 3231: {
3232: struct roffkv *n;
3233: char *c;
3234: int i;
3235: size_t oldch, newch;
1.7 schwarze 3236:
1.16 schwarze 3237: /* Search for an existing string with the same name. */
1.42 schwarze 3238: n = *r;
3239:
1.84 schwarze 3240: while (n && (namesz != n->key.sz ||
3241: strncmp(n->key.p, name, namesz)))
1.7 schwarze 3242: n = n->next;
1.8 schwarze 3243:
3244: if (NULL == n) {
1.16 schwarze 3245: /* Create a new string table entry. */
1.42 schwarze 3246: n = mandoc_malloc(sizeof(struct roffkv));
3247: n->key.p = mandoc_strndup(name, namesz);
3248: n->key.sz = namesz;
3249: n->val.p = NULL;
3250: n->val.sz = 0;
3251: n->next = *r;
3252: *r = n;
1.66 schwarze 3253: } else if (0 == append) {
1.42 schwarze 3254: free(n->val.p);
3255: n->val.p = NULL;
3256: n->val.sz = 0;
1.16 schwarze 3257: }
3258:
3259: if (NULL == string)
3260: return;
3261:
3262: /*
3263: * One additional byte for the '\n' in multiline mode,
3264: * and one for the terminating '\0'.
3265: */
1.66 schwarze 3266: newch = stringsz + (1 < append ? 2u : 1u);
1.42 schwarze 3267:
3268: if (NULL == n->val.p) {
3269: n->val.p = mandoc_malloc(newch);
3270: *n->val.p = '\0';
1.16 schwarze 3271: oldch = 0;
3272: } else {
1.42 schwarze 3273: oldch = n->val.sz;
3274: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.16 schwarze 3275: }
3276:
3277: /* Skip existing content in the destination buffer. */
1.42 schwarze 3278: c = n->val.p + (int)oldch;
1.16 schwarze 3279:
3280: /* Append new content to the destination buffer. */
1.42 schwarze 3281: i = 0;
3282: while (i < (int)stringsz) {
1.16 schwarze 3283: /*
3284: * Rudimentary roff copy mode:
3285: * Handle escaped backslashes.
3286: */
1.42 schwarze 3287: if ('\\' == string[i] && '\\' == string[i + 1])
3288: i++;
3289: *c++ = string[i++];
1.16 schwarze 3290: }
1.8 schwarze 3291:
1.16 schwarze 3292: /* Append terminating bytes. */
1.66 schwarze 3293: if (1 < append)
1.16 schwarze 3294: *c++ = '\n';
1.42 schwarze 3295:
1.16 schwarze 3296: *c = '\0';
1.42 schwarze 3297: n->val.sz = (int)(c - n->val.p);
1.7 schwarze 3298: }
3299:
1.8 schwarze 3300: static const char *
3301: roff_getstrn(const struct roff *r, const char *name, size_t len)
1.7 schwarze 3302: {
1.42 schwarze 3303: const struct roffkv *n;
1.64 schwarze 3304: int i;
1.7 schwarze 3305:
1.42 schwarze 3306: for (n = r->strtab; n; n = n->next)
1.80 schwarze 3307: if (0 == strncmp(name, n->key.p, len) &&
3308: '\0' == n->key.p[(int)len])
1.149 schwarze 3309: return n->val.p;
1.64 schwarze 3310:
3311: for (i = 0; i < PREDEFS_MAX; i++)
3312: if (0 == strncmp(name, predefs[i].name, len) &&
3313: '\0' == predefs[i].name[(int)len])
1.149 schwarze 3314: return predefs[i].str;
1.8 schwarze 3315:
1.149 schwarze 3316: return NULL;
1.7 schwarze 3317: }
3318:
1.8 schwarze 3319: static void
1.42 schwarze 3320: roff_freestr(struct roffkv *r)
1.7 schwarze 3321: {
1.42 schwarze 3322: struct roffkv *n, *nn;
1.7 schwarze 3323:
1.42 schwarze 3324: for (n = r; n; n = nn) {
3325: free(n->key.p);
3326: free(n->val.p);
1.7 schwarze 3327: nn = n->next;
3328: free(n);
3329: }
1.27 schwarze 3330: }
1.138 schwarze 3331:
3332: /* --- accessors and utility functions ------------------------------------ */
1.27 schwarze 3333:
3334: const struct tbl_span *
3335: roff_span(const struct roff *r)
3336: {
1.80 schwarze 3337:
1.149 schwarze 3338: return r->tbl ? tbl_span(r->tbl) : NULL;
1.32 schwarze 3339: }
3340:
3341: const struct eqn *
3342: roff_eqn(const struct roff *r)
3343: {
1.80 schwarze 3344:
1.149 schwarze 3345: return r->last_eqn ? &r->last_eqn->eqn : NULL;
1.42 schwarze 3346: }
3347:
3348: /*
3349: * Duplicate an input string, making the appropriate character
3350: * conversations (as stipulated by `tr') along the way.
3351: * Returns a heap-allocated string with all the replacements made.
3352: */
3353: char *
3354: roff_strdup(const struct roff *r, const char *p)
3355: {
3356: const struct roffkv *cp;
3357: char *res;
3358: const char *pp;
3359: size_t ssz, sz;
3360: enum mandoc_esc esc;
3361:
3362: if (NULL == r->xmbtab && NULL == r->xtab)
1.149 schwarze 3363: return mandoc_strdup(p);
1.42 schwarze 3364: else if ('\0' == *p)
1.149 schwarze 3365: return mandoc_strdup("");
1.42 schwarze 3366:
3367: /*
3368: * Step through each character looking for term matches
3369: * (remember that a `tr' can be invoked with an escape, which is
3370: * a glyph but the escape is multi-character).
3371: * We only do this if the character hash has been initialised
3372: * and the string is >0 length.
3373: */
3374:
3375: res = NULL;
3376: ssz = 0;
3377:
3378: while ('\0' != *p) {
1.161 schwarze 3379: assert((unsigned int)*p < 128);
3380: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.42 schwarze 3381: sz = r->xtab[(int)*p].sz;
3382: res = mandoc_realloc(res, ssz + sz + 1);
3383: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3384: ssz += sz;
3385: p++;
3386: continue;
3387: } else if ('\\' != *p) {
3388: res = mandoc_realloc(res, ssz + 2);
3389: res[ssz++] = *p++;
3390: continue;
3391: }
3392:
3393: /* Search for term matches. */
3394: for (cp = r->xmbtab; cp; cp = cp->next)
3395: if (0 == strncmp(p, cp->key.p, cp->key.sz))
3396: break;
3397:
3398: if (NULL != cp) {
3399: /*
3400: * A match has been found.
3401: * Append the match to the array and move
3402: * forward by its keysize.
3403: */
1.80 schwarze 3404: res = mandoc_realloc(res,
3405: ssz + cp->val.sz + 1);
1.42 schwarze 3406: memcpy(res + ssz, cp->val.p, cp->val.sz);
3407: ssz += cp->val.sz;
3408: p += (int)cp->key.sz;
3409: continue;
3410: }
3411:
3412: /*
3413: * Handle escapes carefully: we need to copy
3414: * over just the escape itself, or else we might
3415: * do replacements within the escape itself.
3416: * Make sure to pass along the bogus string.
3417: */
3418: pp = p++;
3419: esc = mandoc_escape(&p, NULL, NULL);
3420: if (ESCAPE_ERROR == esc) {
3421: sz = strlen(pp);
3422: res = mandoc_realloc(res, ssz + sz + 1);
3423: memcpy(res + ssz, pp, sz);
3424: break;
3425: }
1.80 schwarze 3426: /*
3427: * We bail out on bad escapes.
1.42 schwarze 3428: * No need to warn: we already did so when
3429: * roff_res() was called.
3430: */
3431: sz = (int)(p - pp);
3432: res = mandoc_realloc(res, ssz + sz + 1);
3433: memcpy(res + ssz, pp, sz);
3434: ssz += sz;
3435: }
3436:
3437: res[(int)ssz] = '\0';
1.149 schwarze 3438: return res;
1.99 schwarze 3439: }
3440:
3441: int
3442: roff_getformat(const struct roff *r)
3443: {
3444:
1.149 schwarze 3445: return r->format;
1.48 schwarze 3446: }
3447:
3448: /*
1.80 schwarze 3449: * Find out whether a line is a macro line or not.
1.48 schwarze 3450: * If it is, adjust the current position and return one; if it isn't,
3451: * return zero and don't change the current position.
3452: * If the control character has been set with `.cc', then let that grain
3453: * precedence.
3454: * This is slighly contrary to groff, where using the non-breaking
3455: * control character when `cc' has been invoked will cause the
3456: * non-breaking macro contents to be printed verbatim.
3457: */
3458: int
3459: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
3460: {
3461: int pos;
3462:
3463: pos = *ppos;
3464:
3465: if (0 != r->control && cp[pos] == r->control)
3466: pos++;
3467: else if (0 != r->control)
1.149 schwarze 3468: return 0;
1.48 schwarze 3469: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
3470: pos += 2;
3471: else if ('.' == cp[pos] || '\'' == cp[pos])
3472: pos++;
3473: else
1.149 schwarze 3474: return 0;
1.48 schwarze 3475:
3476: while (' ' == cp[pos] || '\t' == cp[pos])
3477: pos++;
3478:
3479: *ppos = pos;
1.149 schwarze 3480: return 1;
1.1 schwarze 3481: }
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