Annotation of mandoc/roff.c, Revision 1.330
1.330 ! schwarze 1: /* $Id: roff.c,v 1.329 2018/08/01 15:40:17 schwarze Exp $ */
1.1 kristaps 2: /*
1.267 schwarze 3: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.325 schwarze 4: * Copyright (c) 2010-2015, 2017, 2018 Ingo Schwarze <schwarze@openbsd.org>
1.1 kristaps 5: *
6: * Permission to use, copy, modify, and distribute this software for any
1.66 kristaps 7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
1.1 kristaps 9: *
1.106 kristaps 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.66 kristaps 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.106 kristaps 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.66 kristaps 13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.1 kristaps 17: */
1.66 kristaps 18: #include "config.h"
1.225 schwarze 19:
20: #include <sys/types.h>
1.30 kristaps 21:
1.67 kristaps 22: #include <assert.h>
1.85 kristaps 23: #include <ctype.h>
1.245 schwarze 24: #include <limits.h>
1.295 schwarze 25: #include <stddef.h>
26: #include <stdint.h>
1.178 schwarze 27: #include <stdio.h>
1.1 kristaps 28: #include <stdlib.h>
1.67 kristaps 29: #include <string.h>
1.1 kristaps 30:
1.67 kristaps 31: #include "mandoc.h"
1.201 schwarze 32: #include "mandoc_aux.h"
1.295 schwarze 33: #include "mandoc_ohash.h"
1.265 schwarze 34: #include "roff.h"
1.226 schwarze 35: #include "libmandoc.h"
1.266 schwarze 36: #include "roff_int.h"
1.109 kristaps 37: #include "libroff.h"
1.82 kristaps 38:
1.170 schwarze 39: /* Maximum number of string expansions per line, to break infinite loops. */
40: #define EXPAND_LIMIT 1000
41:
1.315 schwarze 42: /* Types of definitions of macros and strings. */
43: #define ROFFDEF_USER (1 << 1) /* User-defined. */
44: #define ROFFDEF_PRE (1 << 2) /* Predefined. */
45: #define ROFFDEF_REN (1 << 3) /* Renamed standard macro. */
46: #define ROFFDEF_STD (1 << 4) /* mdoc(7) or man(7) macro. */
47: #define ROFFDEF_ANY (ROFFDEF_USER | ROFFDEF_PRE | \
48: ROFFDEF_REN | ROFFDEF_STD)
1.325 schwarze 49: #define ROFFDEF_UNDEF (1 << 5) /* Completely undefined. */
1.315 schwarze 50:
1.266 schwarze 51: /* --- data types --------------------------------------------------------- */
52:
1.147 kristaps 53: /*
1.167 kristaps 54: * An incredibly-simple string buffer.
55: */
1.94 kristaps 56: struct roffstr {
1.167 kristaps 57: char *p; /* nil-terminated buffer */
58: size_t sz; /* saved strlen(p) */
1.166 kristaps 59: };
60:
61: /*
1.167 kristaps 62: * A key-value roffstr pair as part of a singly-linked list.
1.166 kristaps 63: */
64: struct roffkv {
65: struct roffstr key;
66: struct roffstr val;
67: struct roffkv *next; /* next in list */
1.94 kristaps 68: };
69:
1.180 schwarze 70: /*
71: * A single number register as part of a singly-linked list.
72: */
73: struct roffreg {
74: struct roffstr key;
1.181 schwarze 75: int val;
1.327 schwarze 76: int step;
1.180 schwarze 77: struct roffreg *next;
78: };
79:
1.295 schwarze 80: /*
81: * Association of request and macro names with token IDs.
82: */
83: struct roffreq {
84: enum roff_tok tok;
85: char name[];
86: };
87:
1.67 kristaps 88: struct roff {
1.128 kristaps 89: struct mparse *parse; /* parse point */
1.296 schwarze 90: struct roff_man *man; /* mdoc or man parser */
1.67 kristaps 91: struct roffnode *last; /* leaf of stack */
1.223 schwarze 92: int *rstack; /* stack of inverted `ie' values */
1.295 schwarze 93: struct ohash *reqtab; /* request lookup table */
1.180 schwarze 94: struct roffreg *regtab; /* number registers */
1.166 kristaps 95: struct roffkv *strtab; /* user-defined strings & macros */
1.306 schwarze 96: struct roffkv *rentab; /* renamed strings & macros */
1.167 kristaps 97: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
98: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.106 kristaps 99: const char *current_string; /* value of last called user macro */
1.118 kristaps 100: struct tbl_node *first_tbl; /* first table parsed */
101: struct tbl_node *last_tbl; /* last table parsed */
102: struct tbl_node *tbl; /* current table being parsed */
1.319 schwarze 103: struct eqn_node *last_eqn; /* equation parser */
104: struct eqn_node *eqn; /* active equation parser */
1.230 schwarze 105: int eqn_inline; /* current equation is inline */
1.223 schwarze 106: int options; /* parse options */
107: int rstacksz; /* current size limit of rstack */
108: int rstackpos; /* position in rstack */
1.227 schwarze 109: int format; /* current file in mdoc or man format */
1.273 schwarze 110: int argc; /* number of args of the last macro */
1.223 schwarze 111: char control; /* control character */
1.303 schwarze 112: char escape; /* escape character */
1.79 kristaps 113: };
114:
1.67 kristaps 115: struct roffnode {
1.294 schwarze 116: enum roff_tok tok; /* type of node */
1.67 kristaps 117: struct roffnode *parent; /* up one in stack */
118: int line; /* parse line */
119: int col; /* parse col */
1.106 kristaps 120: char *name; /* node name, e.g. macro name */
1.79 kristaps 121: char *end; /* end-rules: custom token */
122: int endspan; /* end-rules: next-line or infty */
1.198 schwarze 123: int rule; /* current evaluation rule */
1.67 kristaps 124: };
125:
126: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.294 schwarze 127: enum roff_tok tok, /* tok of macro */ \
1.238 schwarze 128: struct buf *buf, /* input buffer */ \
1.67 kristaps 129: int ln, /* parse line */ \
1.75 kristaps 130: int ppos, /* original pos in buffer */ \
131: int pos, /* current pos in buffer */ \
1.74 kristaps 132: int *offs /* reset offset of buffer data */
1.67 kristaps 133:
134: typedef enum rofferr (*roffproc)(ROFF_ARGS);
135:
136: struct roffmac {
1.79 kristaps 137: roffproc proc; /* process new macro */
138: roffproc text; /* process as child text of macro */
139: roffproc sub; /* process as child of macro */
140: int flags;
141: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.67 kristaps 142: };
143:
1.141 kristaps 144: struct predef {
145: const char *name; /* predefined input name */
146: const char *str; /* replacement symbol */
147: };
148:
149: #define PREDEF(__name, __str) \
150: { (__name), (__str) },
151:
1.266 schwarze 152: /* --- function prototypes ------------------------------------------------ */
153:
1.155 kristaps 154: static void roffnode_cleanscope(struct roff *);
155: static void roffnode_pop(struct roff *);
1.294 schwarze 156: static void roffnode_push(struct roff *, enum roff_tok,
1.155 kristaps 157: const char *, int, int);
1.321 schwarze 158: static void roff_addtbl(struct roff_man *, struct tbl_node *);
1.311 schwarze 159: static enum rofferr roff_als(ROFF_ARGS);
1.80 kristaps 160: static enum rofferr roff_block(ROFF_ARGS);
161: static enum rofferr roff_block_text(ROFF_ARGS);
162: static enum rofferr roff_block_sub(ROFF_ARGS);
1.296 schwarze 163: static enum rofferr roff_br(ROFF_ARGS);
1.80 kristaps 164: static enum rofferr roff_cblock(ROFF_ARGS);
1.174 kristaps 165: static enum rofferr roff_cc(ROFF_ARGS);
1.195 schwarze 166: static void roff_ccond(struct roff *, int, int);
1.82 kristaps 167: static enum rofferr roff_cond(ROFF_ARGS);
168: static enum rofferr roff_cond_text(ROFF_ARGS);
169: static enum rofferr roff_cond_sub(ROFF_ARGS);
1.92 schwarze 170: static enum rofferr roff_ds(ROFF_ARGS);
1.303 schwarze 171: static enum rofferr roff_ec(ROFF_ARGS);
172: static enum rofferr roff_eo(ROFF_ARGS);
1.238 schwarze 173: static enum rofferr roff_eqndelim(struct roff *, struct buf *, int);
1.271 schwarze 174: static int roff_evalcond(struct roff *r, int, char *, int *);
1.234 kristaps 175: static int roff_evalnum(struct roff *, int,
176: const char *, int *, int *, int);
177: static int roff_evalpar(struct roff *, int,
1.261 schwarze 178: const char *, int *, int *, int);
1.198 schwarze 179: static int roff_evalstrcond(const char *, int *);
1.155 kristaps 180: static void roff_free1(struct roff *);
1.180 schwarze 181: static void roff_freereg(struct roffreg *);
1.167 kristaps 182: static void roff_freestr(struct roffkv *);
1.212 schwarze 183: static size_t roff_getname(struct roff *, char **, int, int);
1.261 schwarze 184: static int roff_getnum(const char *, int *, int *, int);
1.184 schwarze 185: static int roff_getop(const char *, int *, char *);
1.327 schwarze 186: static int roff_getregn(struct roff *,
187: const char *, size_t, char);
1.273 schwarze 188: static int roff_getregro(const struct roff *,
189: const char *name);
1.325 schwarze 190: static const char *roff_getstrn(struct roff *,
1.315 schwarze 191: const char *, size_t, int *);
1.271 schwarze 192: static int roff_hasregn(const struct roff *,
193: const char *, size_t);
1.251 schwarze 194: static enum rofferr roff_insec(ROFF_ARGS);
1.178 schwarze 195: static enum rofferr roff_it(ROFF_ARGS);
1.103 kristaps 196: static enum rofferr roff_line_ignore(ROFF_ARGS);
1.265 schwarze 197: static void roff_man_alloc1(struct roff_man *);
198: static void roff_man_free1(struct roff_man *);
1.300 schwarze 199: static enum rofferr roff_manyarg(ROFF_ARGS);
1.330 ! schwarze 200: static enum rofferr roff_nop(ROFF_ARGS);
1.89 kristaps 201: static enum rofferr roff_nr(ROFF_ARGS);
1.297 schwarze 202: static enum rofferr roff_onearg(ROFF_ARGS);
1.294 schwarze 203: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.214 schwarze 204: int, int);
1.305 schwarze 205: static enum rofferr roff_parsetext(struct roff *, struct buf *,
206: int, int *);
1.306 schwarze 207: static enum rofferr roff_renamed(ROFF_ARGS);
1.238 schwarze 208: static enum rofferr roff_res(struct roff *, struct buf *, int, int);
1.122 schwarze 209: static enum rofferr roff_rm(ROFF_ARGS);
1.306 schwarze 210: static enum rofferr roff_rn(ROFF_ARGS);
1.203 schwarze 211: static enum rofferr roff_rr(ROFF_ARGS);
1.326 schwarze 212: static void roff_setregn(struct roff *, const char *,
1.327 schwarze 213: size_t, int, char, int);
1.94 kristaps 214: static void roff_setstr(struct roff *,
1.106 kristaps 215: const char *, const char *, int);
1.207 schwarze 216: static void roff_setstrn(struct roffkv **, const char *,
1.164 kristaps 217: size_t, const char *, size_t, int);
1.105 kristaps 218: static enum rofferr roff_so(ROFF_ARGS);
1.164 kristaps 219: static enum rofferr roff_tr(ROFF_ARGS);
1.175 schwarze 220: static enum rofferr roff_Dd(ROFF_ARGS);
1.109 kristaps 221: static enum rofferr roff_TE(ROFF_ARGS);
222: static enum rofferr roff_TS(ROFF_ARGS);
1.125 kristaps 223: static enum rofferr roff_EQ(ROFF_ARGS);
224: static enum rofferr roff_EN(ROFF_ARGS);
1.112 kristaps 225: static enum rofferr roff_T_(ROFF_ARGS);
1.251 schwarze 226: static enum rofferr roff_unsupp(ROFF_ARGS);
1.106 kristaps 227: static enum rofferr roff_userdef(ROFF_ARGS);
1.67 kristaps 228:
1.266 schwarze 229: /* --- constant data ------------------------------------------------------ */
230:
1.261 schwarze 231: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
232: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
233:
1.294 schwarze 234: const char *__roff_name[MAN_MAX + 1] = {
1.305 schwarze 235: "br", "ce", "ft", "ll",
1.312 schwarze 236: "mc", "po", "rj", "sp",
237: "ta", "ti", NULL,
1.294 schwarze 238: "ab", "ad", "af", "aln",
239: "als", "am", "am1", "ami",
240: "ami1", "as", "as1", "asciify",
241: "backtrace", "bd", "bleedat", "blm",
242: "box", "boxa", "bp", "BP",
243: "break", "breakchar", "brnl", "brp",
1.305 schwarze 244: "brpnl", "c2", "cc",
1.294 schwarze 245: "cf", "cflags", "ch", "char",
246: "chop", "class", "close", "CL",
247: "color", "composite", "continue", "cp",
248: "cropat", "cs", "cu", "da",
249: "dch", "Dd", "de", "de1",
250: "defcolor", "dei", "dei1", "device",
251: "devicem", "di", "do", "ds",
252: "ds1", "dwh", "dt", "ec",
253: "ecr", "ecs", "el", "em",
254: "EN", "eo", "EP", "EQ",
255: "errprint", "ev", "evc", "ex",
256: "fallback", "fam", "fc", "fchar",
257: "fcolor", "fdeferlig", "feature", "fkern",
258: "fl", "flig", "fp", "fps",
259: "fschar", "fspacewidth", "fspecial", "ftr",
260: "fzoom", "gcolor", "hc", "hcode",
261: "hidechar", "hla", "hlm", "hpf",
262: "hpfa", "hpfcode", "hw", "hy",
263: "hylang", "hylen", "hym", "hypp",
264: "hys", "ie", "if", "ig",
265: "index", "it", "itc", "IX",
266: "kern", "kernafter", "kernbefore", "kernpair",
267: "lc", "lc_ctype", "lds", "length",
268: "letadj", "lf", "lg", "lhang",
269: "linetabs", "lnr", "lnrf", "lpfx",
1.304 schwarze 270: "ls", "lsm", "lt",
1.294 schwarze 271: "mediasize", "minss", "mk", "mso",
272: "na", "ne", "nh", "nhychar",
273: "nm", "nn", "nop", "nr",
274: "nrf", "nroff", "ns", "nx",
275: "open", "opena", "os", "output",
276: "padj", "papersize", "pc", "pev",
277: "pi", "PI", "pl", "pm",
1.312 schwarze 278: "pn", "pnr", "ps",
1.294 schwarze 279: "psbb", "pshape", "pso", "ptr",
280: "pvs", "rchar", "rd", "recursionlimit",
1.309 schwarze 281: "return", "rfschar", "rhang",
1.294 schwarze 282: "rm", "rn", "rnn", "rr",
283: "rs", "rt", "schar", "sentchar",
284: "shc", "shift", "sizes", "so",
285: "spacewidth", "special", "spreadwarn", "ss",
286: "sty", "substring", "sv", "sy",
1.300 schwarze 287: "T&", "tc", "TE",
1.301 schwarze 288: "TH", "tkf", "tl",
1.294 schwarze 289: "tm", "tm1", "tmc", "tr",
290: "track", "transchar", "trf", "trimat",
291: "trin", "trnt", "troff", "TS",
292: "uf", "ul", "unformat", "unwatch",
293: "unwatchn", "vpt", "vs", "warn",
294: "warnscale", "watch", "watchlength", "watchn",
295: "wh", "while", "write", "writec",
296: "writem", "xflag", ".", NULL,
1.306 schwarze 297: NULL, "text",
1.294 schwarze 298: "Dd", "Dt", "Os", "Sh",
299: "Ss", "Pp", "D1", "Dl",
300: "Bd", "Ed", "Bl", "El",
301: "It", "Ad", "An", "Ap",
302: "Ar", "Cd", "Cm", "Dv",
303: "Er", "Ev", "Ex", "Fa",
304: "Fd", "Fl", "Fn", "Ft",
305: "Ic", "In", "Li", "Nd",
306: "Nm", "Op", "Ot", "Pa",
307: "Rv", "St", "Va", "Vt",
308: "Xr", "%A", "%B", "%D",
309: "%I", "%J", "%N", "%O",
310: "%P", "%R", "%T", "%V",
311: "Ac", "Ao", "Aq", "At",
312: "Bc", "Bf", "Bo", "Bq",
313: "Bsx", "Bx", "Db", "Dc",
314: "Do", "Dq", "Ec", "Ef",
315: "Em", "Eo", "Fx", "Ms",
316: "No", "Ns", "Nx", "Ox",
317: "Pc", "Pf", "Po", "Pq",
318: "Qc", "Ql", "Qo", "Qq",
319: "Re", "Rs", "Sc", "So",
320: "Sq", "Sm", "Sx", "Sy",
321: "Tn", "Ux", "Xc", "Xo",
322: "Fo", "Fc", "Oo", "Oc",
323: "Bk", "Ek", "Bt", "Hf",
324: "Fr", "Ud", "Lb", "Lp",
325: "Lk", "Mt", "Brq", "Bro",
326: "Brc", "%C", "Es", "En",
1.299 schwarze 327: "Dx", "%Q", "%U", "Ta",
328: NULL,
1.294 schwarze 329: "TH", "SH", "SS", "TP",
330: "LP", "PP", "P", "IP",
331: "HP", "SM", "SB", "BI",
332: "IB", "BR", "RB", "R",
333: "B", "I", "IR", "RI",
1.299 schwarze 334: "nf", "fi",
1.294 schwarze 335: "RE", "RS", "DT", "UC",
1.297 schwarze 336: "PD", "AT", "in",
1.294 schwarze 337: "OP", "EX", "EE", "UR",
1.317 schwarze 338: "UE", "MT", "ME", NULL
1.294 schwarze 339: };
340: const char *const *roff_name = __roff_name;
341:
342: static struct roffmac roffs[TOKEN_NONE] = {
1.296 schwarze 343: { roff_br, NULL, NULL, 0 }, /* br */
1.305 schwarze 344: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.297 schwarze 345: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.298 schwarze 346: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.304 schwarze 347: { roff_onearg, NULL, NULL, 0 }, /* mc */
1.312 schwarze 348: { roff_onearg, NULL, NULL, 0 }, /* po */
1.309 schwarze 349: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.299 schwarze 350: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.300 schwarze 351: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.301 schwarze 352: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.296 schwarze 353: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.295 schwarze 354: { roff_unsupp, NULL, NULL, 0 }, /* ab */
355: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
356: { roff_line_ignore, NULL, NULL, 0 }, /* af */
357: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.311 schwarze 358: { roff_als, NULL, NULL, 0 }, /* als */
1.295 schwarze 359: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
360: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
361: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
362: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
363: { roff_ds, NULL, NULL, 0 }, /* as */
364: { roff_ds, NULL, NULL, 0 }, /* as1 */
365: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
366: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
367: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
368: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
369: { roff_unsupp, NULL, NULL, 0 }, /* blm */
370: { roff_unsupp, NULL, NULL, 0 }, /* box */
371: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
372: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
373: { roff_unsupp, NULL, NULL, 0 }, /* BP */
374: { roff_unsupp, NULL, NULL, 0 }, /* break */
375: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
376: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.296 schwarze 377: { roff_br, NULL, NULL, 0 }, /* brp */
1.295 schwarze 378: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
379: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
380: { roff_cc, NULL, NULL, 0 }, /* cc */
381: { roff_insec, NULL, NULL, 0 }, /* cf */
382: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
383: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
384: { roff_unsupp, NULL, NULL, 0 }, /* char */
385: { roff_unsupp, NULL, NULL, 0 }, /* chop */
386: { roff_line_ignore, NULL, NULL, 0 }, /* class */
387: { roff_insec, NULL, NULL, 0 }, /* close */
388: { roff_unsupp, NULL, NULL, 0 }, /* CL */
389: { roff_line_ignore, NULL, NULL, 0 }, /* color */
390: { roff_unsupp, NULL, NULL, 0 }, /* composite */
391: { roff_unsupp, NULL, NULL, 0 }, /* continue */
392: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
393: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
394: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
395: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
396: { roff_unsupp, NULL, NULL, 0 }, /* da */
397: { roff_unsupp, NULL, NULL, 0 }, /* dch */
398: { roff_Dd, NULL, NULL, 0 }, /* Dd */
399: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
400: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
401: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
402: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
403: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
404: { roff_unsupp, NULL, NULL, 0 }, /* device */
405: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
406: { roff_unsupp, NULL, NULL, 0 }, /* di */
407: { roff_unsupp, NULL, NULL, 0 }, /* do */
408: { roff_ds, NULL, NULL, 0 }, /* ds */
409: { roff_ds, NULL, NULL, 0 }, /* ds1 */
410: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
411: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.303 schwarze 412: { roff_ec, NULL, NULL, 0 }, /* ec */
1.295 schwarze 413: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
414: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
415: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
416: { roff_unsupp, NULL, NULL, 0 }, /* em */
417: { roff_EN, NULL, NULL, 0 }, /* EN */
1.303 schwarze 418: { roff_eo, NULL, NULL, 0 }, /* eo */
1.295 schwarze 419: { roff_unsupp, NULL, NULL, 0 }, /* EP */
420: { roff_EQ, NULL, NULL, 0 }, /* EQ */
421: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
422: { roff_unsupp, NULL, NULL, 0 }, /* ev */
423: { roff_unsupp, NULL, NULL, 0 }, /* evc */
424: { roff_unsupp, NULL, NULL, 0 }, /* ex */
425: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
426: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
427: { roff_unsupp, NULL, NULL, 0 }, /* fc */
428: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
429: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
430: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
431: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
432: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
433: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
434: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
435: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
436: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
437: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
438: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
439: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
440: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
441: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
442: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
443: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
444: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
445: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
446: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
447: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
448: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
449: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
450: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
451: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
452: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
453: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
454: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
455: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
456: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
457: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
458: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
459: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
460: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
461: { roff_unsupp, NULL, NULL, 0 }, /* index */
462: { roff_it, NULL, NULL, 0 }, /* it */
463: { roff_unsupp, NULL, NULL, 0 }, /* itc */
464: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
465: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
466: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
467: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
468: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
469: { roff_unsupp, NULL, NULL, 0 }, /* lc */
470: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
471: { roff_unsupp, NULL, NULL, 0 }, /* lds */
472: { roff_unsupp, NULL, NULL, 0 }, /* length */
473: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
474: { roff_insec, NULL, NULL, 0 }, /* lf */
475: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
476: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
477: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
478: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
479: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
480: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
481: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
482: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
483: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
484: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
485: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
486: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
487: { roff_insec, NULL, NULL, 0 }, /* mso */
488: { roff_line_ignore, NULL, NULL, 0 }, /* na */
489: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
490: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
491: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
492: { roff_unsupp, NULL, NULL, 0 }, /* nm */
493: { roff_unsupp, NULL, NULL, 0 }, /* nn */
1.330 ! schwarze 494: { roff_nop, NULL, NULL, 0 }, /* nop */
1.295 schwarze 495: { roff_nr, NULL, NULL, 0 }, /* nr */
496: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
497: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
498: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
499: { roff_insec, NULL, NULL, 0 }, /* nx */
500: { roff_insec, NULL, NULL, 0 }, /* open */
501: { roff_insec, NULL, NULL, 0 }, /* opena */
502: { roff_line_ignore, NULL, NULL, 0 }, /* os */
503: { roff_unsupp, NULL, NULL, 0 }, /* output */
504: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
505: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
506: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
507: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
508: { roff_insec, NULL, NULL, 0 }, /* pi */
509: { roff_unsupp, NULL, NULL, 0 }, /* PI */
510: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
511: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
512: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
513: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
514: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
515: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
516: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
517: { roff_insec, NULL, NULL, 0 }, /* pso */
518: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
519: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
520: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
521: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
522: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
523: { roff_unsupp, NULL, NULL, 0 }, /* return */
524: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
525: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
526: { roff_rm, NULL, NULL, 0 }, /* rm */
1.306 schwarze 527: { roff_rn, NULL, NULL, 0 }, /* rn */
1.295 schwarze 528: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
529: { roff_rr, NULL, NULL, 0 }, /* rr */
530: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
531: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
532: { roff_unsupp, NULL, NULL, 0 }, /* schar */
533: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
534: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
535: { roff_unsupp, NULL, NULL, 0 }, /* shift */
536: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
537: { roff_so, NULL, NULL, 0 }, /* so */
538: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
539: { roff_line_ignore, NULL, NULL, 0 }, /* special */
540: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
541: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
542: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
543: { roff_unsupp, NULL, NULL, 0 }, /* substring */
544: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
545: { roff_insec, NULL, NULL, 0 }, /* sy */
546: { roff_T_, NULL, NULL, 0 }, /* T& */
547: { roff_unsupp, NULL, NULL, 0 }, /* tc */
548: { roff_TE, NULL, NULL, 0 }, /* TE */
1.315 schwarze 549: { roff_Dd, NULL, NULL, 0 }, /* TH */
1.295 schwarze 550: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
551: { roff_unsupp, NULL, NULL, 0 }, /* tl */
552: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
553: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
554: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
555: { roff_tr, NULL, NULL, 0 }, /* tr */
556: { roff_line_ignore, NULL, NULL, 0 }, /* track */
557: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
558: { roff_insec, NULL, NULL, 0 }, /* trf */
559: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
560: { roff_unsupp, NULL, NULL, 0 }, /* trin */
561: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
562: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
563: { roff_TS, NULL, NULL, 0 }, /* TS */
564: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
565: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
566: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
567: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
568: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
569: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
570: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
571: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
572: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
573: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
574: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
575: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
576: { roff_unsupp, NULL, NULL, 0 }, /* wh */
577: { roff_unsupp, NULL, NULL, 0 }, /* while */
578: { roff_insec, NULL, NULL, 0 }, /* write */
579: { roff_insec, NULL, NULL, 0 }, /* writec */
580: { roff_insec, NULL, NULL, 0 }, /* writem */
581: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
582: { roff_cblock, NULL, NULL, 0 }, /* . */
1.306 schwarze 583: { roff_renamed, NULL, NULL, 0 },
1.295 schwarze 584: { roff_userdef, NULL, NULL, 0 }
1.67 kristaps 585: };
586:
1.141 kristaps 587: /* Array of injected predefined strings. */
588: #define PREDEFS_MAX 38
589: static const struct predef predefs[PREDEFS_MAX] = {
590: #include "predefs.in"
591: };
592:
1.305 schwarze 593: static int roffce_lines; /* number of input lines to center */
594: static struct roff_node *roffce_node; /* active request */
1.178 schwarze 595: static int roffit_lines; /* number of lines to delay */
596: static char *roffit_macro; /* nil-terminated macro line */
597:
1.207 schwarze 598:
1.266 schwarze 599: /* --- request table ------------------------------------------------------ */
600:
1.295 schwarze 601: struct ohash *
602: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.85 kristaps 603: {
1.295 schwarze 604: struct ohash *htab;
605: struct roffreq *req;
606: enum roff_tok tok;
607: size_t sz;
608: unsigned int slot;
1.85 kristaps 609:
1.295 schwarze 610: htab = mandoc_malloc(sizeof(*htab));
611: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.85 kristaps 612:
1.295 schwarze 613: for (tok = mintok; tok < maxtok; tok++) {
1.296 schwarze 614: if (roff_name[tok] == NULL)
615: continue;
1.295 schwarze 616: sz = strlen(roff_name[tok]);
617: req = mandoc_malloc(sizeof(*req) + sz + 1);
618: req->tok = tok;
619: memcpy(req->name, roff_name[tok], sz + 1);
620: slot = ohash_qlookup(htab, req->name);
621: ohash_insert(htab, slot, req);
1.85 kristaps 622: }
1.295 schwarze 623: return htab;
1.85 kristaps 624: }
625:
1.295 schwarze 626: void
627: roffhash_free(struct ohash *htab)
1.67 kristaps 628: {
1.295 schwarze 629: struct roffreq *req;
630: unsigned int slot;
1.67 kristaps 631:
1.295 schwarze 632: if (htab == NULL)
633: return;
634: for (req = ohash_first(htab, &slot); req != NULL;
635: req = ohash_next(htab, &slot))
636: free(req);
637: ohash_delete(htab);
638: free(htab);
639: }
640:
641: enum roff_tok
642: roffhash_find(struct ohash *htab, const char *name, size_t sz)
643: {
644: struct roffreq *req;
645: const char *end;
646:
647: if (sz) {
648: end = name + sz;
649: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
650: } else
651: req = ohash_find(htab, ohash_qlookup(htab, name));
652: return req == NULL ? TOKEN_NONE : req->tok;
1.67 kristaps 653: }
654:
1.266 schwarze 655: /* --- stack of request blocks -------------------------------------------- */
656:
1.67 kristaps 657: /*
658: * Pop the current node off of the stack of roff instructions currently
659: * pending.
660: */
661: static void
662: roffnode_pop(struct roff *r)
663: {
664: struct roffnode *p;
665:
1.75 kristaps 666: assert(r->last);
1.207 schwarze 667: p = r->last;
1.82 kristaps 668:
1.75 kristaps 669: r->last = r->last->parent;
1.106 kristaps 670: free(p->name);
671: free(p->end);
1.67 kristaps 672: free(p);
673: }
674:
675: /*
676: * Push a roff node onto the instruction stack. This must later be
677: * removed with roffnode_pop().
678: */
1.98 schwarze 679: static void
1.294 schwarze 680: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.106 kristaps 681: int line, int col)
1.67 kristaps 682: {
683: struct roffnode *p;
684:
1.98 schwarze 685: p = mandoc_calloc(1, sizeof(struct roffnode));
1.67 kristaps 686: p->tok = tok;
1.106 kristaps 687: if (name)
688: p->name = mandoc_strdup(name);
1.67 kristaps 689: p->parent = r->last;
690: p->line = line;
691: p->col = col;
1.198 schwarze 692: p->rule = p->parent ? p->parent->rule : 0;
1.67 kristaps 693:
694: r->last = p;
695: }
696:
1.266 schwarze 697: /* --- roff parser state data management ---------------------------------- */
698:
1.67 kristaps 699: static void
700: roff_free1(struct roff *r)
701: {
1.176 schwarze 702: struct tbl_node *tbl;
1.167 kristaps 703: int i;
1.67 kristaps 704:
1.176 schwarze 705: while (NULL != (tbl = r->first_tbl)) {
706: r->first_tbl = tbl->next;
707: tbl_free(tbl);
1.109 kristaps 708: }
1.113 kristaps 709: r->first_tbl = r->last_tbl = r->tbl = NULL;
710:
1.319 schwarze 711: if (r->last_eqn != NULL)
712: eqn_free(r->last_eqn);
713: r->last_eqn = r->eqn = NULL;
1.125 kristaps 714:
1.67 kristaps 715: while (r->last)
716: roffnode_pop(r);
1.109 kristaps 717:
1.223 schwarze 718: free (r->rstack);
719: r->rstack = NULL;
720: r->rstacksz = 0;
721: r->rstackpos = -1;
722:
723: roff_freereg(r->regtab);
724: r->regtab = NULL;
725:
1.167 kristaps 726: roff_freestr(r->strtab);
1.306 schwarze 727: roff_freestr(r->rentab);
1.167 kristaps 728: roff_freestr(r->xmbtab);
1.306 schwarze 729: r->strtab = r->rentab = r->xmbtab = NULL;
1.167 kristaps 730:
731: if (r->xtab)
732: for (i = 0; i < 128; i++)
733: free(r->xtab[i].p);
734: free(r->xtab);
735: r->xtab = NULL;
1.67 kristaps 736: }
737:
738: void
739: roff_reset(struct roff *r)
740: {
741: roff_free1(r);
1.227 schwarze 742: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.303 schwarze 743: r->control = '\0';
744: r->escape = '\\';
1.307 schwarze 745: roffce_lines = 0;
746: roffce_node = NULL;
747: roffit_lines = 0;
748: roffit_macro = NULL;
1.67 kristaps 749: }
750:
751: void
752: roff_free(struct roff *r)
753: {
754: roff_free1(r);
1.295 schwarze 755: roffhash_free(r->reqtab);
1.67 kristaps 756: free(r);
757: }
758:
759: struct roff *
1.279 schwarze 760: roff_alloc(struct mparse *parse, int options)
1.67 kristaps 761: {
762: struct roff *r;
763:
1.98 schwarze 764: r = mandoc_calloc(1, sizeof(struct roff));
1.128 kristaps 765: r->parse = parse;
1.328 schwarze 766: r->reqtab = roffhash_alloc(0, ROFF_RENAMED);
1.199 schwarze 767: r->options = options;
1.227 schwarze 768: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.82 kristaps 769: r->rstackpos = -1;
1.303 schwarze 770: r->escape = '\\';
1.277 schwarze 771: return r;
1.265 schwarze 772: }
773:
1.266 schwarze 774: /* --- syntax tree state data management ---------------------------------- */
775:
1.265 schwarze 776: static void
777: roff_man_free1(struct roff_man *man)
778: {
779:
1.266 schwarze 780: if (man->first != NULL)
781: roff_node_delete(man, man->first);
1.265 schwarze 782: free(man->meta.msec);
783: free(man->meta.vol);
784: free(man->meta.os);
785: free(man->meta.arch);
786: free(man->meta.title);
787: free(man->meta.name);
788: free(man->meta.date);
789: }
790:
791: static void
792: roff_man_alloc1(struct roff_man *man)
793: {
794:
795: memset(&man->meta, 0, sizeof(man->meta));
796: man->first = mandoc_calloc(1, sizeof(*man->first));
797: man->first->type = ROFFT_ROOT;
798: man->last = man->first;
799: man->last_es = NULL;
800: man->flags = 0;
801: man->macroset = MACROSET_NONE;
802: man->lastsec = man->lastnamed = SEC_NONE;
803: man->next = ROFF_NEXT_CHILD;
804: }
805:
806: void
807: roff_man_reset(struct roff_man *man)
808: {
809:
810: roff_man_free1(man);
811: roff_man_alloc1(man);
812: }
813:
814: void
815: roff_man_free(struct roff_man *man)
816: {
817:
818: roff_man_free1(man);
819: free(man);
820: }
821:
822: struct roff_man *
823: roff_man_alloc(struct roff *roff, struct mparse *parse,
1.316 schwarze 824: const char *os_s, int quick)
1.265 schwarze 825: {
826: struct roff_man *man;
827:
828: man = mandoc_calloc(1, sizeof(*man));
829: man->parse = parse;
830: man->roff = roff;
1.316 schwarze 831: man->os_s = os_s;
1.265 schwarze 832: man->quick = quick;
833: roff_man_alloc1(man);
1.296 schwarze 834: roff->man = man;
1.277 schwarze 835: return man;
1.67 kristaps 836: }
837:
1.266 schwarze 838: /* --- syntax tree handling ----------------------------------------------- */
839:
840: struct roff_node *
841: roff_node_alloc(struct roff_man *man, int line, int pos,
842: enum roff_type type, int tok)
843: {
844: struct roff_node *n;
845:
846: n = mandoc_calloc(1, sizeof(*n));
847: n->line = line;
848: n->pos = pos;
849: n->tok = tok;
850: n->type = type;
851: n->sec = man->lastsec;
852:
853: if (man->flags & MDOC_SYNOPSIS)
1.285 schwarze 854: n->flags |= NODE_SYNPRETTY;
1.266 schwarze 855: else
1.285 schwarze 856: n->flags &= ~NODE_SYNPRETTY;
1.266 schwarze 857: if (man->flags & MDOC_NEWLINE)
1.285 schwarze 858: n->flags |= NODE_LINE;
1.266 schwarze 859: man->flags &= ~MDOC_NEWLINE;
860:
1.277 schwarze 861: return n;
1.266 schwarze 862: }
863:
864: void
865: roff_node_append(struct roff_man *man, struct roff_node *n)
866: {
867:
868: switch (man->next) {
869: case ROFF_NEXT_SIBLING:
1.281 schwarze 870: if (man->last->next != NULL) {
871: n->next = man->last->next;
872: man->last->next->prev = n;
873: } else
874: man->last->parent->last = n;
1.266 schwarze 875: man->last->next = n;
876: n->prev = man->last;
877: n->parent = man->last->parent;
878: break;
879: case ROFF_NEXT_CHILD:
1.287 schwarze 880: if (man->last->child != NULL) {
881: n->next = man->last->child;
882: man->last->child->prev = n;
883: } else
884: man->last->last = n;
1.266 schwarze 885: man->last->child = n;
886: n->parent = man->last;
887: break;
888: default:
889: abort();
890: }
1.282 schwarze 891: man->last = n;
1.266 schwarze 892:
893: switch (n->type) {
894: case ROFFT_HEAD:
895: n->parent->head = n;
896: break;
897: case ROFFT_BODY:
1.282 schwarze 898: if (n->end != ENDBODY_NOT)
899: return;
1.266 schwarze 900: n->parent->body = n;
901: break;
902: case ROFFT_TAIL:
903: n->parent->tail = n;
904: break;
905: default:
1.282 schwarze 906: return;
1.266 schwarze 907: }
1.282 schwarze 908:
909: /*
910: * Copy over the normalised-data pointer of our parent. Not
911: * everybody has one, but copying a null pointer is fine.
912: */
913:
914: n->norm = n->parent->norm;
915: assert(n->parent->type == ROFFT_BLOCK);
1.266 schwarze 916: }
917:
1.267 schwarze 918: void
919: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
920: {
921: struct roff_node *n;
922:
923: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
924: n->string = roff_strdup(man->roff, word);
925: roff_node_append(man, n);
1.286 schwarze 926: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 927: man->next = ROFF_NEXT_SIBLING;
928: }
929:
930: void
931: roff_word_append(struct roff_man *man, const char *word)
932: {
933: struct roff_node *n;
934: char *addstr, *newstr;
935:
936: n = man->last;
937: addstr = roff_strdup(man->roff, word);
938: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
939: free(addstr);
940: free(n->string);
941: n->string = newstr;
942: man->next = ROFF_NEXT_SIBLING;
1.268 schwarze 943: }
944:
945: void
946: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
947: {
948: struct roff_node *n;
949:
950: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
951: roff_node_append(man, n);
952: man->next = ROFF_NEXT_CHILD;
953: }
954:
955: struct roff_node *
956: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
957: {
958: struct roff_node *n;
959:
960: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
961: roff_node_append(man, n);
962: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 963: return n;
1.267 schwarze 964: }
965:
1.266 schwarze 966: struct roff_node *
967: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
968: {
969: struct roff_node *n;
970:
971: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
972: roff_node_append(man, n);
973: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 974: return n;
1.266 schwarze 975: }
976:
977: struct roff_node *
978: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
979: {
980: struct roff_node *n;
981:
982: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
983: roff_node_append(man, n);
984: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 985: return n;
1.267 schwarze 986: }
987:
1.321 schwarze 988: static void
989: roff_addtbl(struct roff_man *man, struct tbl_node *tbl)
1.267 schwarze 990: {
991: struct roff_node *n;
1.321 schwarze 992: const struct tbl_span *span;
1.267 schwarze 993:
994: if (man->macroset == MACROSET_MAN)
1.302 schwarze 995: man_breakscope(man, ROFF_TS);
1.321 schwarze 996: while ((span = tbl_span(tbl)) != NULL) {
997: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
998: n->span = span;
999: roff_node_append(man, n);
1000: n->flags |= NODE_VALID | NODE_ENDED;
1001: man->next = ROFF_NEXT_SIBLING;
1002: }
1.266 schwarze 1003: }
1004:
1005: void
1006: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1007: {
1008:
1009: /* Adjust siblings. */
1010:
1011: if (n->prev)
1012: n->prev->next = n->next;
1013: if (n->next)
1014: n->next->prev = n->prev;
1015:
1016: /* Adjust parent. */
1017:
1018: if (n->parent != NULL) {
1019: if (n->parent->child == n)
1020: n->parent->child = n->next;
1021: if (n->parent->last == n)
1022: n->parent->last = n->prev;
1023: }
1024:
1025: /* Adjust parse point. */
1026:
1027: if (man == NULL)
1028: return;
1029: if (man->last == n) {
1030: if (n->prev == NULL) {
1031: man->last = n->parent;
1032: man->next = ROFF_NEXT_CHILD;
1033: } else {
1034: man->last = n->prev;
1035: man->next = ROFF_NEXT_SIBLING;
1036: }
1037: }
1038: if (man->first == n)
1039: man->first = NULL;
1040: }
1041:
1042: void
1043: roff_node_free(struct roff_node *n)
1044: {
1045:
1046: if (n->args != NULL)
1047: mdoc_argv_free(n->args);
1048: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1049: free(n->norm);
1.319 schwarze 1050: if (n->eqn != NULL)
1051: eqn_box_free(n->eqn);
1.266 schwarze 1052: free(n->string);
1053: free(n);
1054: }
1055:
1056: void
1057: roff_node_delete(struct roff_man *man, struct roff_node *n)
1058: {
1059:
1060: while (n->child != NULL)
1061: roff_node_delete(man, n->child);
1062: roff_node_unlink(man, n);
1063: roff_node_free(n);
1.269 schwarze 1064: }
1065:
1066: void
1067: deroff(char **dest, const struct roff_node *n)
1068: {
1069: char *cp;
1070: size_t sz;
1071:
1072: if (n->type != ROFFT_TEXT) {
1073: for (n = n->child; n != NULL; n = n->next)
1074: deroff(dest, n);
1075: return;
1076: }
1077:
1.288 schwarze 1078: /* Skip leading whitespace. */
1.269 schwarze 1079:
1.288 schwarze 1080: for (cp = n->string; *cp != '\0'; cp++) {
1.289 schwarze 1081: if (cp[0] == '\\' && cp[1] != '\0' &&
1082: strchr(" %&0^|~", cp[1]) != NULL)
1.269 schwarze 1083: cp++;
1.288 schwarze 1084: else if ( ! isspace((unsigned char)*cp))
1.269 schwarze 1085: break;
1086: }
1087:
1.289 schwarze 1088: /* Skip trailing backslash. */
1089:
1090: sz = strlen(cp);
1.290 schwarze 1091: if (sz > 0 && cp[sz - 1] == '\\')
1.289 schwarze 1092: sz--;
1093:
1.269 schwarze 1094: /* Skip trailing whitespace. */
1095:
1.289 schwarze 1096: for (; sz; sz--)
1.269 schwarze 1097: if ( ! isspace((unsigned char)cp[sz-1]))
1098: break;
1099:
1100: /* Skip empty strings. */
1101:
1102: if (sz == 0)
1103: return;
1104:
1105: if (*dest == NULL) {
1106: *dest = mandoc_strndup(cp, sz);
1107: return;
1108: }
1109:
1110: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1111: free(*dest);
1112: *dest = cp;
1.266 schwarze 1113: }
1114:
1115: /* --- main functions of the roff parser ---------------------------------- */
1116:
1.94 kristaps 1117: /*
1.206 schwarze 1118: * In the current line, expand escape sequences that tend to get
1119: * used in numerical expressions and conditional requests.
1120: * Also check the syntax of the remaining escape sequences.
1.154 kristaps 1121: */
1.172 schwarze 1122: static enum rofferr
1.238 schwarze 1123: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.94 kristaps 1124: {
1.208 schwarze 1125: char ubuf[24]; /* buffer to print the number */
1.328 schwarze 1126: struct roff_node *n; /* used for header comments */
1.205 schwarze 1127: const char *start; /* start of the string to process */
1.209 schwarze 1128: char *stesc; /* start of an escape sequence ('\\') */
1.328 schwarze 1129: char *ep; /* end of comment string */
1.108 schwarze 1130: const char *stnam; /* start of the name, after "[(*" */
1131: const char *cp; /* end of the name, e.g. before ']' */
1132: const char *res; /* the string to be substituted */
1.238 schwarze 1133: char *nbuf; /* new buffer to copy buf->buf to */
1.181 schwarze 1134: size_t maxl; /* expected length of the escape name */
1135: size_t naml; /* actual length of the escape name */
1.237 schwarze 1136: enum mandoc_esc esc; /* type of the escape sequence */
1137: int inaml; /* length returned from mandoc_escape() */
1.181 schwarze 1138: int expand_count; /* to avoid infinite loops */
1.206 schwarze 1139: int npos; /* position in numeric expression */
1.218 schwarze 1140: int arg_complete; /* argument not interrupted by eol */
1.303 schwarze 1141: int done; /* no more input available */
1.315 schwarze 1142: int deftype; /* type of definition to paste */
1.323 schwarze 1143: int rcsid; /* kind of RCS id seen */
1.327 schwarze 1144: char sign; /* increment number register */
1.206 schwarze 1145: char term; /* character terminating the escape */
1.94 kristaps 1146:
1.303 schwarze 1147: /* Search forward for comments. */
1148:
1149: done = 0;
1150: start = buf->buf + pos;
1151: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1152: if (stesc[0] != r->escape || stesc[1] == '\0')
1153: continue;
1154: stesc++;
1155: if (*stesc != '"' && *stesc != '#')
1156: continue;
1.313 schwarze 1157:
1158: /* Comment found, look for RCS id. */
1159:
1.323 schwarze 1160: rcsid = 0;
1.313 schwarze 1161: if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
1.323 schwarze 1162: rcsid = 1 << MANDOC_OS_OPENBSD;
1.313 schwarze 1163: cp += 8;
1164: } else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
1.323 schwarze 1165: rcsid = 1 << MANDOC_OS_NETBSD;
1.313 schwarze 1166: cp += 7;
1167: }
1168: if (cp != NULL &&
1169: isalnum((unsigned char)*cp) == 0 &&
1.314 schwarze 1170: strchr(cp, '$') != NULL) {
1.323 schwarze 1171: if (r->man->meta.rcsids & rcsid)
1.314 schwarze 1172: mandoc_msg(MANDOCERR_RCS_REP, r->parse,
1173: ln, stesc + 1 - buf->buf, stesc + 1);
1.323 schwarze 1174: r->man->meta.rcsids |= rcsid;
1.314 schwarze 1175: }
1.313 schwarze 1176:
1177: /* Handle trailing whitespace. */
1178:
1.328 schwarze 1179: ep = strchr(stesc--, '\0') - 1;
1180: if (*ep == '\n') {
1.303 schwarze 1181: done = 1;
1.328 schwarze 1182: ep--;
1.303 schwarze 1183: }
1.328 schwarze 1184: if (*ep == ' ' || *ep == '\t')
1.303 schwarze 1185: mandoc_msg(MANDOCERR_SPACE_EOL, r->parse,
1.328 schwarze 1186: ln, ep - buf->buf, NULL);
1187:
1188: /*
1189: * Save comments preceding the title macro
1190: * in the syntax tree.
1191: */
1192:
1193: if (r->format == 0) {
1194: while (*ep == ' ' || *ep == '\t')
1195: ep--;
1196: ep[1] = '\0';
1197: n = roff_node_alloc(r->man,
1198: ln, stesc + 1 - buf->buf,
1199: ROFFT_COMMENT, TOKEN_NONE);
1200: n->string = mandoc_strdup(stesc + 2);
1201: roff_node_append(r->man, n);
1202: n->flags |= NODE_VALID | NODE_ENDED;
1203: r->man->next = ROFF_NEXT_SIBLING;
1204: }
1205:
1206: /* Discard comments. */
1207:
1.303 schwarze 1208: while (stesc > start && stesc[-1] == ' ')
1209: stesc--;
1210: *stesc = '\0';
1211: break;
1212: }
1213: if (stesc == start)
1214: return ROFF_CONT;
1215: stesc--;
1216:
1217: /* Notice the end of the input. */
1218:
1219: if (*stesc == '\n') {
1220: *stesc-- = '\0';
1221: done = 1;
1222: }
1223:
1.170 schwarze 1224: expand_count = 0;
1.303 schwarze 1225: while (stesc >= start) {
1.170 schwarze 1226:
1.205 schwarze 1227: /* Search backwards for the next backslash. */
1228:
1.303 schwarze 1229: if (*stesc != r->escape) {
1230: if (*stesc == '\\') {
1231: *stesc = '\0';
1232: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1233: buf->buf, stesc + 1) + 1;
1234: start = nbuf + pos;
1235: stesc = nbuf + (stesc - buf->buf);
1236: free(buf->buf);
1237: buf->buf = nbuf;
1238: }
1239: stesc--;
1.205 schwarze 1240: continue;
1.303 schwarze 1241: }
1.205 schwarze 1242:
1243: /* If it is escaped, skip it. */
1244:
1245: for (cp = stesc - 1; cp >= start; cp--)
1.303 schwarze 1246: if (*cp != r->escape)
1.205 schwarze 1247: break;
1248:
1.238 schwarze 1249: if ((stesc - cp) % 2 == 0) {
1.303 schwarze 1250: while (stesc > cp)
1251: *stesc-- = '\\';
1.205 schwarze 1252: continue;
1.303 schwarze 1253: } else if (stesc[1] != '\0') {
1254: *stesc = '\\';
1255: } else {
1256: *stesc-- = '\0';
1257: if (done)
1258: continue;
1259: else
1260: return ROFF_APPEND;
1.205 schwarze 1261: }
1.108 schwarze 1262:
1.206 schwarze 1263: /* Decide whether to expand or to check only. */
1.108 schwarze 1264:
1.206 schwarze 1265: term = '\0';
1.205 schwarze 1266: cp = stesc + 1;
1.181 schwarze 1267: switch (*cp) {
1.207 schwarze 1268: case '*':
1.181 schwarze 1269: res = NULL;
1270: break;
1.207 schwarze 1271: case 'B':
1272: case 'w':
1.206 schwarze 1273: term = cp[1];
1274: /* FALLTHROUGH */
1.207 schwarze 1275: case 'n':
1.327 schwarze 1276: sign = cp[1];
1277: if (sign == '+' || sign == '-')
1278: cp++;
1.181 schwarze 1279: res = ubuf;
1280: break;
1281: default:
1.237 schwarze 1282: esc = mandoc_escape(&cp, &stnam, &inaml);
1283: if (esc == ESCAPE_ERROR ||
1284: (esc == ESCAPE_SPECIAL &&
1.279 schwarze 1285: mchars_spec2cp(stnam, inaml) < 0))
1.219 schwarze 1286: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.238 schwarze 1287: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1288: "%.*s", (int)(cp - stesc), stesc);
1.303 schwarze 1289: stesc--;
1.205 schwarze 1290: continue;
1.152 kristaps 1291: }
1292:
1.205 schwarze 1293: if (EXPAND_LIMIT < ++expand_count) {
1294: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.238 schwarze 1295: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1296: return ROFF_IGN;
1.205 schwarze 1297: }
1.108 schwarze 1298:
1299: /*
1300: * The third character decides the length
1.181 schwarze 1301: * of the name of the string or register.
1.108 schwarze 1302: * Save a pointer to the name.
1303: */
1304:
1.238 schwarze 1305: if (term == '\0') {
1.206 schwarze 1306: switch (*++cp) {
1.207 schwarze 1307: case '\0':
1.206 schwarze 1308: maxl = 0;
1309: break;
1.207 schwarze 1310: case '(':
1.206 schwarze 1311: cp++;
1312: maxl = 2;
1313: break;
1.207 schwarze 1314: case '[':
1.206 schwarze 1315: cp++;
1316: term = ']';
1317: maxl = 0;
1318: break;
1319: default:
1320: maxl = 1;
1321: break;
1322: }
1323: } else {
1324: cp += 2;
1.94 kristaps 1325: maxl = 0;
1326: }
1.108 schwarze 1327: stnam = cp;
1.94 kristaps 1328:
1.108 schwarze 1329: /* Advance to the end of the name. */
1.94 kristaps 1330:
1.253 schwarze 1331: naml = 0;
1.218 schwarze 1332: arg_complete = 1;
1.253 schwarze 1333: while (maxl == 0 || naml < maxl) {
1.238 schwarze 1334: if (*cp == '\0') {
1.219 schwarze 1335: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 1336: ln, (int)(stesc - buf->buf), stesc);
1.218 schwarze 1337: arg_complete = 0;
1.206 schwarze 1338: break;
1.153 kristaps 1339: }
1.238 schwarze 1340: if (maxl == 0 && *cp == term) {
1.206 schwarze 1341: cp++;
1.253 schwarze 1342: break;
1343: }
1344: if (*cp++ != '\\' || stesc[1] != 'w') {
1345: naml++;
1346: continue;
1347: }
1348: switch (mandoc_escape(&cp, NULL, NULL)) {
1349: case ESCAPE_SPECIAL:
1350: case ESCAPE_UNICODE:
1351: case ESCAPE_NUMBERED:
1352: case ESCAPE_OVERSTRIKE:
1353: naml++;
1354: break;
1355: default:
1.94 kristaps 1356: break;
1.206 schwarze 1357: }
1.94 kristaps 1358: }
1359:
1.108 schwarze 1360: /*
1361: * Retrieve the replacement string; if it is
1362: * undefined, resume searching for escapes.
1363: */
1364:
1.206 schwarze 1365: switch (stesc[1]) {
1.207 schwarze 1366: case '*':
1.315 schwarze 1367: if (arg_complete) {
1368: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1369: res = roff_getstrn(r, stnam, naml, &deftype);
1370: }
1.206 schwarze 1371: break;
1.207 schwarze 1372: case 'B':
1.206 schwarze 1373: npos = 0;
1.218 schwarze 1374: ubuf[0] = arg_complete &&
1.261 schwarze 1375: roff_evalnum(r, ln, stnam, &npos,
1376: NULL, ROFFNUM_SCALE) &&
1.218 schwarze 1377: stnam + npos + 1 == cp ? '1' : '0';
1.206 schwarze 1378: ubuf[1] = '\0';
1379: break;
1.207 schwarze 1380: case 'n':
1.218 schwarze 1381: if (arg_complete)
1382: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.327 schwarze 1383: roff_getregn(r, stnam, naml, sign));
1.218 schwarze 1384: else
1385: ubuf[0] = '\0';
1.206 schwarze 1386: break;
1.207 schwarze 1387: case 'w':
1.218 schwarze 1388: /* use even incomplete args */
1.208 schwarze 1389: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.206 schwarze 1390: 24 * (int)naml);
1391: break;
1392: }
1.94 kristaps 1393:
1.238 schwarze 1394: if (res == NULL) {
1.219 schwarze 1395: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1396: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1397: "%.*s", (int)naml, stnam);
1.142 kristaps 1398: res = "";
1.246 schwarze 1399: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1400: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1401: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1402: return ROFF_IGN;
1.94 kristaps 1403: }
1404:
1.108 schwarze 1405: /* Replace the escape sequence by the string. */
1406:
1.209 schwarze 1407: *stesc = '\0';
1.238 schwarze 1408: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1409: buf->buf, res, cp) + 1;
1.94 kristaps 1410:
1.205 schwarze 1411: /* Prepare for the next replacement. */
1.94 kristaps 1412:
1.205 schwarze 1413: start = nbuf + pos;
1.238 schwarze 1414: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1415: free(buf->buf);
1416: buf->buf = nbuf;
1.154 kristaps 1417: }
1.277 schwarze 1418: return ROFF_CONT;
1.154 kristaps 1419: }
1420:
1421: /*
1.275 schwarze 1422: * Process text streams.
1.154 kristaps 1423: */
1424: static enum rofferr
1.305 schwarze 1425: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.154 kristaps 1426: {
1427: size_t sz;
1428: const char *start;
1.178 schwarze 1429: char *p;
1430: int isz;
1.154 kristaps 1431: enum mandoc_esc esc;
1432:
1.275 schwarze 1433: /* Spring the input line trap. */
1434:
1435: if (roffit_lines == 1) {
1436: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1437: free(buf->buf);
1438: buf->buf = p;
1439: buf->sz = isz + 1;
1440: *offs = 0;
1441: free(roffit_macro);
1442: roffit_lines = 0;
1.277 schwarze 1443: return ROFF_REPARSE;
1.275 schwarze 1444: } else if (roffit_lines > 1)
1445: --roffit_lines;
1446:
1.305 schwarze 1447: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1448: if (roffce_lines < 1) {
1449: r->man->last = roffce_node;
1450: r->man->next = ROFF_NEXT_SIBLING;
1451: roffce_lines = 0;
1452: roffce_node = NULL;
1453: } else
1454: roffce_lines--;
1455: }
1456:
1.275 schwarze 1457: /* Convert all breakable hyphens into ASCII_HYPH. */
1458:
1.238 schwarze 1459: start = p = buf->buf + pos;
1.154 kristaps 1460:
1.238 schwarze 1461: while (*p != '\0') {
1.154 kristaps 1462: sz = strcspn(p, "-\\");
1463: p += sz;
1464:
1.238 schwarze 1465: if (*p == '\0')
1.159 kristaps 1466: break;
1467:
1.238 schwarze 1468: if (*p == '\\') {
1.154 kristaps 1469: /* Skip over escapes. */
1470: p++;
1.189 schwarze 1471: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.238 schwarze 1472: if (esc == ESCAPE_ERROR)
1.154 kristaps 1473: break;
1.264 schwarze 1474: while (*p == '-')
1475: p++;
1.155 kristaps 1476: continue;
1.159 kristaps 1477: } else if (p == start) {
1.158 kristaps 1478: p++;
1.155 kristaps 1479: continue;
1.158 kristaps 1480: }
1.155 kristaps 1481:
1.171 schwarze 1482: if (isalpha((unsigned char)p[-1]) &&
1483: isalpha((unsigned char)p[1]))
1.155 kristaps 1484: *p = ASCII_HYPH;
1485: p++;
1.94 kristaps 1486: }
1.277 schwarze 1487: return ROFF_CONT;
1.94 kristaps 1488: }
1489:
1.67 kristaps 1490: enum rofferr
1.238 schwarze 1491: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.67 kristaps 1492: {
1.294 schwarze 1493: enum roff_tok t;
1.109 kristaps 1494: enum rofferr e;
1.238 schwarze 1495: int pos; /* parse point */
1.243 schwarze 1496: int spos; /* saved parse point for messages */
1.238 schwarze 1497: int ppos; /* original offset in buf->buf */
1498: int ctl; /* macro line (boolean) */
1499:
1500: ppos = pos = *offs;
1.79 kristaps 1501:
1.230 schwarze 1502: /* Handle in-line equation delimiters. */
1503:
1.236 schwarze 1504: if (r->tbl == NULL &&
1505: r->last_eqn != NULL && r->last_eqn->delim &&
1.230 schwarze 1506: (r->eqn == NULL || r->eqn_inline)) {
1.238 schwarze 1507: e = roff_eqndelim(r, buf, pos);
1.230 schwarze 1508: if (e == ROFF_REPARSE)
1.277 schwarze 1509: return e;
1.230 schwarze 1510: assert(e == ROFF_CONT);
1511: }
1512:
1513: /* Expand some escape sequences. */
1.94 kristaps 1514:
1.238 schwarze 1515: e = roff_res(r, buf, ln, pos);
1.303 schwarze 1516: if (e == ROFF_IGN || e == ROFF_APPEND)
1.277 schwarze 1517: return e;
1.238 schwarze 1518: assert(e == ROFF_CONT);
1.94 kristaps 1519:
1.238 schwarze 1520: ctl = roff_getcontrol(r, buf->buf, &pos);
1.130 kristaps 1521:
1.94 kristaps 1522: /*
1.79 kristaps 1523: * First, if a scope is open and we're not a macro, pass the
1.252 schwarze 1524: * text through the macro's filter.
1525: * Equations process all content themselves.
1526: * Tables process almost all content themselves, but we want
1527: * to warn about macros before passing it there.
1.79 kristaps 1528: */
1.74 kristaps 1529:
1.252 schwarze 1530: if (r->last != NULL && ! ctl) {
1.78 kristaps 1531: t = r->last->tok;
1.238 schwarze 1532: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.294 schwarze 1533: if (e == ROFF_IGN)
1.277 schwarze 1534: return e;
1.294 schwarze 1535: assert(e == ROFF_CONT);
1.182 schwarze 1536: }
1.319 schwarze 1537: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1538: eqn_read(r->eqn, buf->buf + ppos);
1539: return ROFF_IGN;
1540: }
1.321 schwarze 1541: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1542: tbl_read(r->tbl, ln, buf->buf, ppos);
1543: roff_addtbl(r->man, r->tbl);
1544: return ROFF_IGN;
1545: }
1.252 schwarze 1546: if ( ! ctl)
1.305 schwarze 1547: return roff_parsetext(r, buf, pos, offs);
1.228 schwarze 1548:
1549: /* Skip empty request lines. */
1550:
1.238 schwarze 1551: if (buf->buf[pos] == '"') {
1.228 schwarze 1552: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1553: ln, pos, NULL);
1.277 schwarze 1554: return ROFF_IGN;
1.238 schwarze 1555: } else if (buf->buf[pos] == '\0')
1.277 schwarze 1556: return ROFF_IGN;
1.67 kristaps 1557:
1.79 kristaps 1558: /*
1559: * If a scope is open, go to the child handler for that macro,
1560: * as it may want to preprocess before doing anything with it.
1.125 kristaps 1561: * Don't do so if an equation is open.
1.79 kristaps 1562: */
1.78 kristaps 1563:
1.79 kristaps 1564: if (r->last) {
1565: t = r->last->tok;
1.277 schwarze 1566: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1567: }
1.78 kristaps 1568:
1.243 schwarze 1569: /* No scope is open. This is a new request or macro. */
1570:
1571: spos = pos;
1572: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1573:
1574: /* Tables ignore most macros. */
1575:
1.308 schwarze 1576: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.309 schwarze 1577: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.243 schwarze 1578: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1579: ln, pos, buf->buf + spos);
1.308 schwarze 1580: if (t != TOKEN_NONE)
1.277 schwarze 1581: return ROFF_IGN;
1.257 schwarze 1582: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1583: pos++;
1.291 schwarze 1584: while (buf->buf[pos] == ' ')
1.257 schwarze 1585: pos++;
1.321 schwarze 1586: tbl_read(r->tbl, ln, buf->buf, pos);
1587: roff_addtbl(r->man, r->tbl);
1588: return ROFF_IGN;
1.243 schwarze 1589: }
1590:
1.305 schwarze 1591: /* For now, let high level macros abort .ce mode. */
1592:
1593: if (ctl && roffce_node != NULL &&
1.324 schwarze 1594: (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
1595: t == ROFF_TH || t == ROFF_TS)) {
1.305 schwarze 1596: r->man->last = roffce_node;
1597: r->man->next = ROFF_NEXT_SIBLING;
1598: roffce_lines = 0;
1599: roffce_node = NULL;
1600: }
1601:
1.79 kristaps 1602: /*
1.243 schwarze 1603: * This is neither a roff request nor a user-defined macro.
1604: * Let the standard macro set parsers handle it.
1.79 kristaps 1605: */
1.67 kristaps 1606:
1.294 schwarze 1607: if (t == TOKEN_NONE)
1.277 schwarze 1608: return ROFF_CONT;
1.243 schwarze 1609:
1610: /* Execute a roff request or a user defined macro. */
1.67 kristaps 1611:
1.296 schwarze 1612: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.74 kristaps 1613: }
1614:
1.117 kristaps 1615: void
1.74 kristaps 1616: roff_endparse(struct roff *r)
1617: {
1.321 schwarze 1618: if (r->last != NULL)
1.221 schwarze 1619: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1620: r->last->line, r->last->col,
1.295 schwarze 1621: roff_name[r->last->tok]);
1.117 kristaps 1622:
1.321 schwarze 1623: if (r->eqn != NULL) {
1.221 schwarze 1624: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1.319 schwarze 1625: r->eqn->node->line, r->eqn->node->pos, "EQ");
1626: eqn_parse(r->eqn);
1627: r->eqn = NULL;
1.125 kristaps 1628: }
1629:
1.321 schwarze 1630: if (r->tbl != NULL) {
1.221 schwarze 1631: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1632: r->tbl->line, r->tbl->pos, "TS");
1.321 schwarze 1633: tbl_end(r->tbl);
1634: r->tbl = NULL;
1.117 kristaps 1635: }
1.67 kristaps 1636: }
1637:
1638: /*
1639: * Parse a roff node's type from the input buffer. This must be in the
1640: * form of ".foo xxx" in the usual way.
1641: */
1.294 schwarze 1642: static enum roff_tok
1.214 schwarze 1643: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.67 kristaps 1644: {
1.214 schwarze 1645: char *cp;
1.106 kristaps 1646: const char *mac;
1647: size_t maclen;
1.315 schwarze 1648: int deftype;
1.294 schwarze 1649: enum roff_tok t;
1.67 kristaps 1650:
1.214 schwarze 1651: cp = buf + *pos;
1652:
1653: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.294 schwarze 1654: return TOKEN_NONE;
1.67 kristaps 1655:
1.214 schwarze 1656: mac = cp;
1657: maclen = roff_getname(r, &cp, ln, ppos);
1.67 kristaps 1658:
1.315 schwarze 1659: deftype = ROFFDEF_USER | ROFFDEF_REN;
1660: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
1661: switch (deftype) {
1662: case ROFFDEF_USER:
1663: t = ROFF_USERDEF;
1664: break;
1665: case ROFFDEF_REN:
1666: t = ROFF_RENAMED;
1667: break;
1668: default:
1669: t = roffhash_find(r->reqtab, mac, maclen);
1670: break;
1671: }
1.294 schwarze 1672: if (t != TOKEN_NONE)
1.214 schwarze 1673: *pos = cp - buf;
1.325 schwarze 1674: else if (deftype == ROFFDEF_UNDEF) {
1675: /* Using an undefined macro defines it to be empty. */
1676: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
1677: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
1678: }
1.277 schwarze 1679: return t;
1.67 kristaps 1680: }
1681:
1.266 schwarze 1682: /* --- handling of request blocks ----------------------------------------- */
1683:
1.67 kristaps 1684: static enum rofferr
1.76 kristaps 1685: roff_cblock(ROFF_ARGS)
1.67 kristaps 1686: {
1687:
1.79 kristaps 1688: /*
1689: * A block-close `..' should only be invoked as a child of an
1690: * ignore macro, otherwise raise a warning and just ignore it.
1691: */
1692:
1.238 schwarze 1693: if (r->last == NULL) {
1.221 schwarze 1694: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1695: ln, ppos, "..");
1.277 schwarze 1696: return ROFF_IGN;
1.76 kristaps 1697: }
1.67 kristaps 1698:
1.81 kristaps 1699: switch (r->last->tok) {
1.207 schwarze 1700: case ROFF_am:
1.220 schwarze 1701: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.207 schwarze 1702: case ROFF_ami:
1703: case ROFF_de:
1.108 schwarze 1704: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.207 schwarze 1705: case ROFF_dei:
1706: case ROFF_ig:
1.81 kristaps 1707: break;
1708: default:
1.221 schwarze 1709: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1710: ln, ppos, "..");
1.277 schwarze 1711: return ROFF_IGN;
1.76 kristaps 1712: }
1.67 kristaps 1713:
1.238 schwarze 1714: if (buf->buf[pos] != '\0')
1.217 schwarze 1715: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 1716: ".. %s", buf->buf + pos);
1.71 kristaps 1717:
1718: roffnode_pop(r);
1.76 kristaps 1719: roffnode_cleanscope(r);
1.277 schwarze 1720: return ROFF_IGN;
1.71 kristaps 1721:
1.67 kristaps 1722: }
1723:
1.76 kristaps 1724: static void
1725: roffnode_cleanscope(struct roff *r)
1.67 kristaps 1726: {
1727:
1.76 kristaps 1728: while (r->last) {
1.173 schwarze 1729: if (--r->last->endspan != 0)
1.76 kristaps 1730: break;
1731: roffnode_pop(r);
1732: }
1.67 kristaps 1733: }
1734:
1.195 schwarze 1735: static void
1736: roff_ccond(struct roff *r, int ln, int ppos)
1.74 kristaps 1737: {
1738:
1.76 kristaps 1739: if (NULL == r->last) {
1.221 schwarze 1740: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1741: ln, ppos, "\\}");
1.195 schwarze 1742: return;
1.76 kristaps 1743: }
1744:
1.82 kristaps 1745: switch (r->last->tok) {
1.207 schwarze 1746: case ROFF_el:
1747: case ROFF_ie:
1748: case ROFF_if:
1.82 kristaps 1749: break;
1750: default:
1.221 schwarze 1751: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1752: ln, ppos, "\\}");
1.195 schwarze 1753: return;
1.75 kristaps 1754: }
1755:
1.76 kristaps 1756: if (r->last->endspan > -1) {
1.221 schwarze 1757: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1758: ln, ppos, "\\}");
1.195 schwarze 1759: return;
1.76 kristaps 1760: }
1761:
1.75 kristaps 1762: roffnode_pop(r);
1.76 kristaps 1763: roffnode_cleanscope(r);
1.195 schwarze 1764: return;
1.76 kristaps 1765: }
1766:
1767: static enum rofferr
1.80 kristaps 1768: roff_block(ROFF_ARGS)
1.76 kristaps 1769: {
1.315 schwarze 1770: const char *name, *value;
1771: char *call, *cp, *iname, *rname;
1772: size_t csz, namesz, rsz;
1773: int deftype;
1.106 kristaps 1774:
1.220 schwarze 1775: /* Ignore groff compatibility mode for now. */
1.76 kristaps 1776:
1.238 schwarze 1777: if (tok == ROFF_de1)
1.220 schwarze 1778: tok = ROFF_de;
1.251 schwarze 1779: else if (tok == ROFF_dei1)
1780: tok = ROFF_dei;
1.238 schwarze 1781: else if (tok == ROFF_am1)
1.220 schwarze 1782: tok = ROFF_am;
1.251 schwarze 1783: else if (tok == ROFF_ami1)
1784: tok = ROFF_ami;
1.220 schwarze 1785:
1786: /* Parse the macro name argument. */
1787:
1.238 schwarze 1788: cp = buf->buf + pos;
1789: if (tok == ROFF_ig) {
1.220 schwarze 1790: iname = NULL;
1791: namesz = 0;
1792: } else {
1793: iname = cp;
1794: namesz = roff_getname(r, &cp, ln, ppos);
1795: iname[namesz] = '\0';
1796: }
1.107 kristaps 1797:
1.220 schwarze 1798: /* Resolve the macro name argument if it is indirect. */
1.107 kristaps 1799:
1.238 schwarze 1800: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 1801: deftype = ROFFDEF_USER;
1802: name = roff_getstrn(r, iname, namesz, &deftype);
1803: if (name == NULL) {
1.220 schwarze 1804: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1805: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1806: "%.*s", (int)namesz, iname);
1807: namesz = 0;
1808: } else
1809: namesz = strlen(name);
1810: } else
1811: name = iname;
1.107 kristaps 1812:
1.238 schwarze 1813: if (namesz == 0 && tok != ROFF_ig) {
1.220 schwarze 1814: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1.295 schwarze 1815: ln, ppos, roff_name[tok]);
1.277 schwarze 1816: return ROFF_IGN;
1.220 schwarze 1817: }
1.80 kristaps 1818:
1.106 kristaps 1819: roffnode_push(r, tok, name, ln, ppos);
1820:
1821: /*
1822: * At the beginning of a `de' macro, clear the existing string
1823: * with the same name, if there is one. New content will be
1.193 schwarze 1824: * appended from roff_block_text() in multiline mode.
1.106 kristaps 1825: */
1.107 kristaps 1826:
1.311 schwarze 1827: if (tok == ROFF_de || tok == ROFF_dei) {
1.213 schwarze 1828: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.311 schwarze 1829: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.315 schwarze 1830: } else if (tok == ROFF_am || tok == ROFF_ami) {
1831: deftype = ROFFDEF_ANY;
1832: value = roff_getstrn(r, iname, namesz, &deftype);
1833: switch (deftype) { /* Before appending, ... */
1834: case ROFFDEF_PRE: /* copy predefined to user-defined. */
1835: roff_setstrn(&r->strtab, name, namesz,
1836: value, strlen(value), 0);
1837: break;
1838: case ROFFDEF_REN: /* call original standard macro. */
1839: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1840: (int)strlen(value), value);
1841: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1842: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1843: free(call);
1844: break;
1845: case ROFFDEF_STD: /* rename and call standard macro. */
1846: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
1847: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
1848: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1849: (int)rsz, rname);
1850: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1851: free(call);
1852: free(rname);
1853: break;
1854: default:
1855: break;
1856: }
1.311 schwarze 1857: }
1.76 kristaps 1858:
1.238 schwarze 1859: if (*cp == '\0')
1.277 schwarze 1860: return ROFF_IGN;
1.78 kristaps 1861:
1.220 schwarze 1862: /* Get the custom end marker. */
1.107 kristaps 1863:
1.220 schwarze 1864: iname = cp;
1.213 schwarze 1865: namesz = roff_getname(r, &cp, ln, ppos);
1.220 schwarze 1866:
1867: /* Resolve the end marker if it is indirect. */
1868:
1.238 schwarze 1869: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 1870: deftype = ROFFDEF_USER;
1871: name = roff_getstrn(r, iname, namesz, &deftype);
1872: if (name == NULL) {
1.220 schwarze 1873: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1874: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1875: "%.*s", (int)namesz, iname);
1876: namesz = 0;
1877: } else
1878: namesz = strlen(name);
1879: } else
1880: name = iname;
1881:
1.213 schwarze 1882: if (namesz)
1883: r->last->end = mandoc_strndup(name, namesz);
1.78 kristaps 1884:
1.238 schwarze 1885: if (*cp != '\0')
1.217 schwarze 1886: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1.295 schwarze 1887: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.74 kristaps 1888:
1.277 schwarze 1889: return ROFF_IGN;
1.78 kristaps 1890: }
1891:
1892: static enum rofferr
1.80 kristaps 1893: roff_block_sub(ROFF_ARGS)
1.79 kristaps 1894: {
1.294 schwarze 1895: enum roff_tok t;
1.79 kristaps 1896: int i, j;
1897:
1898: /*
1899: * First check whether a custom macro exists at this level. If
1900: * it does, then check against it. This is some of groff's
1901: * stranger behaviours. If we encountered a custom end-scope
1902: * tag and that tag also happens to be a "real" macro, then we
1903: * need to try interpreting it again as a real macro. If it's
1904: * not, then return ignore. Else continue.
1905: */
1906:
1907: if (r->last->end) {
1.130 kristaps 1908: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.238 schwarze 1909: if (buf->buf[i] != r->last->end[j])
1.79 kristaps 1910: break;
1911:
1.238 schwarze 1912: if (r->last->end[j] == '\0' &&
1913: (buf->buf[i] == '\0' ||
1914: buf->buf[i] == ' ' ||
1915: buf->buf[i] == '\t')) {
1.79 kristaps 1916: roffnode_pop(r);
1917: roffnode_cleanscope(r);
1918:
1.238 schwarze 1919: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.130 kristaps 1920: i++;
1921:
1922: pos = i;
1.238 schwarze 1923: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.294 schwarze 1924: TOKEN_NONE)
1.277 schwarze 1925: return ROFF_RERUN;
1926: return ROFF_IGN;
1.79 kristaps 1927: }
1928: }
1929:
1930: /*
1931: * If we have no custom end-query or lookup failed, then try
1932: * pulling it out of the hashtable.
1933: */
1934:
1.238 schwarze 1935: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.79 kristaps 1936:
1.238 schwarze 1937: if (t != ROFF_cblock) {
1938: if (tok != ROFF_ig)
1939: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.277 schwarze 1940: return ROFF_IGN;
1.106 kristaps 1941: }
1.79 kristaps 1942:
1.277 schwarze 1943: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1944: }
1945:
1946: static enum rofferr
1.80 kristaps 1947: roff_block_text(ROFF_ARGS)
1.78 kristaps 1948: {
1949:
1.238 schwarze 1950: if (tok != ROFF_ig)
1951: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.106 kristaps 1952:
1.277 schwarze 1953: return ROFF_IGN;
1.78 kristaps 1954: }
1955:
1956: static enum rofferr
1.82 kristaps 1957: roff_cond_sub(ROFF_ARGS)
1958: {
1.294 schwarze 1959: enum roff_tok t;
1.139 kristaps 1960: char *ep;
1.198 schwarze 1961: int rr;
1.82 kristaps 1962:
1963: rr = r->last->rule;
1.139 kristaps 1964: roffnode_cleanscope(r);
1.144 kristaps 1965:
1.196 schwarze 1966: /*
1967: * If `\}' occurs on a macro line without a preceding macro,
1968: * drop the line completely.
1969: */
1970:
1.238 schwarze 1971: ep = buf->buf + pos;
1972: if (ep[0] == '\\' && ep[1] == '}')
1.198 schwarze 1973: rr = 0;
1.196 schwarze 1974:
1.177 schwarze 1975: /* Always check for the closing delimiter `\}'. */
1.144 kristaps 1976:
1.238 schwarze 1977: while ((ep = strchr(ep, '\\')) != NULL) {
1.318 schwarze 1978: switch (ep[1]) {
1979: case '}':
1980: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1981: roff_ccond(r, ln, ep - buf->buf);
1982: break;
1983: case '\0':
1984: ++ep;
1985: break;
1986: default:
1987: ep += 2;
1988: break;
1.197 schwarze 1989: }
1.177 schwarze 1990: }
1.318 schwarze 1991:
1992: /*
1993: * Fully handle known macros when they are structurally
1994: * required or when the conditional evaluated to true.
1995: */
1996:
1997: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1998: return t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT)
1999: ? (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs) : rr
2000: ? ROFF_CONT : ROFF_IGN;
1.82 kristaps 2001: }
2002:
2003: static enum rofferr
2004: roff_cond_text(ROFF_ARGS)
1.78 kristaps 2005: {
1.140 kristaps 2006: char *ep;
1.198 schwarze 2007: int rr;
1.82 kristaps 2008:
2009: rr = r->last->rule;
1.140 kristaps 2010: roffnode_cleanscope(r);
1.82 kristaps 2011:
1.238 schwarze 2012: ep = buf->buf + pos;
2013: while ((ep = strchr(ep, '\\')) != NULL) {
2014: if (*(++ep) == '}') {
1.197 schwarze 2015: *ep = '&';
1.238 schwarze 2016: roff_ccond(r, ln, ep - buf->buf - 1);
1.197 schwarze 2017: }
1.247 schwarze 2018: if (*ep != '\0')
2019: ++ep;
1.78 kristaps 2020: }
1.277 schwarze 2021: return rr ? ROFF_CONT : ROFF_IGN;
1.74 kristaps 2022: }
2023:
1.266 schwarze 2024: /* --- handling of numeric and conditional expressions -------------------- */
2025:
1.204 schwarze 2026: /*
2027: * Parse a single signed integer number. Stop at the first non-digit.
2028: * If there is at least one digit, return success and advance the
2029: * parse point, else return failure and let the parse point unchanged.
2030: * Ignore overflows, treat them just like the C language.
2031: */
1.184 schwarze 2032: static int
1.261 schwarze 2033: roff_getnum(const char *v, int *pos, int *res, int flags)
1.184 schwarze 2034: {
1.261 schwarze 2035: int myres, scaled, n, p;
1.206 schwarze 2036:
2037: if (NULL == res)
2038: res = &myres;
1.184 schwarze 2039:
2040: p = *pos;
2041: n = v[p] == '-';
1.261 schwarze 2042: if (n || v[p] == '+')
1.184 schwarze 2043: p++;
2044:
1.261 schwarze 2045: if (flags & ROFFNUM_WHITE)
2046: while (isspace((unsigned char)v[p]))
2047: p++;
2048:
1.184 schwarze 2049: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.204 schwarze 2050: *res = 10 * *res + v[p] - '0';
1.184 schwarze 2051: if (p == *pos + n)
2052: return 0;
2053:
2054: if (n)
2055: *res = -*res;
2056:
1.254 schwarze 2057: /* Each number may be followed by one optional scaling unit. */
2058:
2059: switch (v[p]) {
2060: case 'f':
1.261 schwarze 2061: scaled = *res * 65536;
1.254 schwarze 2062: break;
2063: case 'i':
1.261 schwarze 2064: scaled = *res * 240;
1.254 schwarze 2065: break;
2066: case 'c':
1.261 schwarze 2067: scaled = *res * 240 / 2.54;
1.254 schwarze 2068: break;
2069: case 'v':
2070: case 'P':
1.261 schwarze 2071: scaled = *res * 40;
1.254 schwarze 2072: break;
2073: case 'm':
2074: case 'n':
1.261 schwarze 2075: scaled = *res * 24;
1.254 schwarze 2076: break;
2077: case 'p':
1.261 schwarze 2078: scaled = *res * 10 / 3;
1.254 schwarze 2079: break;
2080: case 'u':
1.261 schwarze 2081: scaled = *res;
1.254 schwarze 2082: break;
2083: case 'M':
1.261 schwarze 2084: scaled = *res * 6 / 25;
1.254 schwarze 2085: break;
2086: default:
1.261 schwarze 2087: scaled = *res;
1.254 schwarze 2088: p--;
2089: break;
2090: }
1.261 schwarze 2091: if (flags & ROFFNUM_SCALE)
2092: *res = scaled;
1.254 schwarze 2093:
2094: *pos = p + 1;
1.277 schwarze 2095: return 1;
1.184 schwarze 2096: }
2097:
1.198 schwarze 2098: /*
2099: * Evaluate a string comparison condition.
2100: * The first character is the delimiter.
2101: * Succeed if the string up to its second occurrence
2102: * matches the string up to its third occurence.
2103: * Advance the cursor after the third occurrence
2104: * or lacking that, to the end of the line.
2105: */
2106: static int
2107: roff_evalstrcond(const char *v, int *pos)
2108: {
2109: const char *s1, *s2, *s3;
2110: int match;
2111:
2112: match = 0;
2113: s1 = v + *pos; /* initial delimiter */
2114: s2 = s1 + 1; /* for scanning the first string */
2115: s3 = strchr(s2, *s1); /* for scanning the second string */
2116:
2117: if (NULL == s3) /* found no middle delimiter */
2118: goto out;
2119:
2120: while ('\0' != *++s3) {
2121: if (*s2 != *s3) { /* mismatch */
2122: s3 = strchr(s3, *s1);
2123: break;
2124: }
2125: if (*s3 == *s1) { /* found the final delimiter */
2126: match = 1;
2127: break;
2128: }
2129: s2++;
2130: }
2131:
2132: out:
2133: if (NULL == s3)
2134: s3 = strchr(s2, '\0');
1.242 schwarze 2135: else if (*s3 != '\0')
1.198 schwarze 2136: s3++;
2137: *pos = s3 - v;
1.277 schwarze 2138: return match;
1.198 schwarze 2139: }
2140:
1.204 schwarze 2141: /*
2142: * Evaluate an optionally negated single character, numerical,
2143: * or string condition.
2144: */
1.198 schwarze 2145: static int
1.271 schwarze 2146: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.88 kristaps 2147: {
1.271 schwarze 2148: char *cp, *name;
2149: size_t sz;
1.315 schwarze 2150: int deftype, number, savepos, istrue, wanttrue;
1.88 kristaps 2151:
1.198 schwarze 2152: if ('!' == v[*pos]) {
2153: wanttrue = 0;
2154: (*pos)++;
2155: } else
2156: wanttrue = 1;
2157:
1.88 kristaps 2158: switch (v[*pos]) {
1.240 schwarze 2159: case '\0':
1.277 schwarze 2160: return 0;
1.207 schwarze 2161: case 'n':
2162: case 'o':
1.88 kristaps 2163: (*pos)++;
1.277 schwarze 2164: return wanttrue;
1.207 schwarze 2165: case 'c':
2166: case 'e':
2167: case 't':
1.239 schwarze 2168: case 'v':
1.88 kristaps 2169: (*pos)++;
1.277 schwarze 2170: return !wanttrue;
1.310 schwarze 2171: case 'd':
1.271 schwarze 2172: case 'r':
1.310 schwarze 2173: cp = v + *pos + 1;
2174: while (*cp == ' ')
2175: cp++;
2176: name = cp;
2177: sz = roff_getname(r, &cp, ln, cp - v);
1.315 schwarze 2178: if (sz == 0)
2179: istrue = 0;
2180: else if (v[*pos] == 'r')
2181: istrue = roff_hasregn(r, name, sz);
2182: else {
2183: deftype = ROFFDEF_ANY;
2184: roff_getstrn(r, name, sz, &deftype);
2185: istrue = !!deftype;
2186: }
1.271 schwarze 2187: *pos = cp - v;
1.310 schwarze 2188: return istrue == wanttrue;
1.88 kristaps 2189: default:
2190: break;
2191: }
2192:
1.241 schwarze 2193: savepos = *pos;
1.261 schwarze 2194: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.277 schwarze 2195: return (number > 0) == wanttrue;
1.241 schwarze 2196: else if (*pos == savepos)
1.277 schwarze 2197: return roff_evalstrcond(v, pos) == wanttrue;
1.204 schwarze 2198: else
1.277 schwarze 2199: return 0;
1.88 kristaps 2200: }
2201:
1.74 kristaps 2202: static enum rofferr
1.103 kristaps 2203: roff_line_ignore(ROFF_ARGS)
1.89 kristaps 2204: {
1.123 schwarze 2205:
1.277 schwarze 2206: return ROFF_IGN;
1.89 kristaps 2207: }
2208:
1.104 kristaps 2209: static enum rofferr
1.251 schwarze 2210: roff_insec(ROFF_ARGS)
2211: {
2212:
2213: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
1.295 schwarze 2214: ln, ppos, roff_name[tok]);
1.277 schwarze 2215: return ROFF_IGN;
1.251 schwarze 2216: }
2217:
2218: static enum rofferr
2219: roff_unsupp(ROFF_ARGS)
2220: {
2221:
2222: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
1.295 schwarze 2223: ln, ppos, roff_name[tok]);
1.277 schwarze 2224: return ROFF_IGN;
1.251 schwarze 2225: }
2226:
2227: static enum rofferr
1.82 kristaps 2228: roff_cond(ROFF_ARGS)
1.74 kristaps 2229: {
1.173 schwarze 2230:
2231: roffnode_push(r, tok, NULL, ln, ppos);
1.74 kristaps 2232:
1.207 schwarze 2233: /*
1.134 kristaps 2234: * An `.el' has no conditional body: it will consume the value
2235: * of the current rstack entry set in prior `ie' calls or
1.207 schwarze 2236: * defaults to DENY.
1.134 kristaps 2237: *
2238: * If we're not an `el', however, then evaluate the conditional.
2239: */
1.133 kristaps 2240:
1.238 schwarze 2241: r->last->rule = tok == ROFF_el ?
1.207 schwarze 2242: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.238 schwarze 2243: roff_evalcond(r, ln, buf->buf, &pos);
1.77 kristaps 2244:
1.134 kristaps 2245: /*
2246: * An if-else will put the NEGATION of the current evaluated
2247: * conditional into the stack of rules.
2248: */
2249:
1.238 schwarze 2250: if (tok == ROFF_ie) {
1.223 schwarze 2251: if (r->rstackpos + 1 == r->rstacksz) {
2252: r->rstacksz += 16;
2253: r->rstack = mandoc_reallocarray(r->rstack,
2254: r->rstacksz, sizeof(int));
1.134 kristaps 2255: }
1.198 schwarze 2256: r->rstack[++r->rstackpos] = !r->last->rule;
1.82 kristaps 2257: }
1.88 kristaps 2258:
2259: /* If the parent has false as its rule, then so do we. */
2260:
1.198 schwarze 2261: if (r->last->parent && !r->last->parent->rule)
2262: r->last->rule = 0;
1.88 kristaps 2263:
2264: /*
1.173 schwarze 2265: * Determine scope.
2266: * If there is nothing on the line after the conditional,
2267: * not even whitespace, use next-line scope.
1.88 kristaps 2268: */
1.74 kristaps 2269:
1.238 schwarze 2270: if (buf->buf[pos] == '\0') {
1.173 schwarze 2271: r->last->endspan = 2;
2272: goto out;
2273: }
2274:
1.238 schwarze 2275: while (buf->buf[pos] == ' ')
1.173 schwarze 2276: pos++;
2277:
2278: /* An opening brace requests multiline scope. */
1.75 kristaps 2279:
1.238 schwarze 2280: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.75 kristaps 2281: r->last->endspan = -1;
2282: pos += 2;
1.272 schwarze 2283: while (buf->buf[pos] == ' ')
2284: pos++;
1.173 schwarze 2285: goto out;
1.207 schwarze 2286: }
1.74 kristaps 2287:
1.77 kristaps 2288: /*
1.173 schwarze 2289: * Anything else following the conditional causes
2290: * single-line scope. Warn if the scope contains
2291: * nothing but trailing whitespace.
1.77 kristaps 2292: */
2293:
1.238 schwarze 2294: if (buf->buf[pos] == '\0')
1.216 schwarze 2295: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
1.295 schwarze 2296: ln, ppos, roff_name[tok]);
1.77 kristaps 2297:
1.173 schwarze 2298: r->last->endspan = 1;
1.74 kristaps 2299:
1.173 schwarze 2300: out:
1.75 kristaps 2301: *offs = pos;
1.277 schwarze 2302: return ROFF_RERUN;
1.83 schwarze 2303: }
2304:
2305: static enum rofferr
1.92 schwarze 2306: roff_ds(ROFF_ARGS)
2307: {
1.212 schwarze 2308: char *string;
2309: const char *name;
2310: size_t namesz;
1.96 kristaps 2311:
1.251 schwarze 2312: /* Ignore groff compatibility mode for now. */
2313:
2314: if (tok == ROFF_ds1)
2315: tok = ROFF_ds;
2316: else if (tok == ROFF_as1)
2317: tok = ROFF_as;
2318:
1.96 kristaps 2319: /*
1.212 schwarze 2320: * The first word is the name of the string.
2321: * If it is empty or terminated by an escape sequence,
2322: * abort the `ds' request without defining anything.
1.96 kristaps 2323: */
1.92 schwarze 2324:
1.238 schwarze 2325: name = string = buf->buf + pos;
2326: if (*name == '\0')
1.277 schwarze 2327: return ROFF_IGN;
1.92 schwarze 2328:
1.212 schwarze 2329: namesz = roff_getname(r, &string, ln, pos);
1.238 schwarze 2330: if (name[namesz] == '\\')
1.277 schwarze 2331: return ROFF_IGN;
1.212 schwarze 2332:
2333: /* Read past the initial double-quote, if any. */
1.238 schwarze 2334: if (*string == '"')
1.92 schwarze 2335: string++;
2336:
1.96 kristaps 2337: /* The rest is the value. */
1.212 schwarze 2338: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2339: ROFF_as == tok);
1.311 schwarze 2340: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.277 schwarze 2341: return ROFF_IGN;
1.92 schwarze 2342: }
2343:
1.204 schwarze 2344: /*
2345: * Parse a single operator, one or two characters long.
2346: * If the operator is recognized, return success and advance the
2347: * parse point, else return failure and let the parse point unchanged.
2348: */
2349: static int
2350: roff_getop(const char *v, int *pos, char *res)
2351: {
2352:
2353: *res = v[*pos];
2354:
2355: switch (*res) {
1.207 schwarze 2356: case '+':
2357: case '-':
2358: case '*':
2359: case '/':
2360: case '%':
2361: case '&':
2362: case ':':
1.204 schwarze 2363: break;
2364: case '<':
2365: switch (v[*pos + 1]) {
1.207 schwarze 2366: case '=':
1.204 schwarze 2367: *res = 'l';
2368: (*pos)++;
2369: break;
1.207 schwarze 2370: case '>':
1.204 schwarze 2371: *res = '!';
2372: (*pos)++;
2373: break;
1.207 schwarze 2374: case '?':
1.204 schwarze 2375: *res = 'i';
2376: (*pos)++;
2377: break;
2378: default:
2379: break;
2380: }
2381: break;
2382: case '>':
2383: switch (v[*pos + 1]) {
1.207 schwarze 2384: case '=':
1.204 schwarze 2385: *res = 'g';
2386: (*pos)++;
2387: break;
1.207 schwarze 2388: case '?':
1.204 schwarze 2389: *res = 'a';
2390: (*pos)++;
2391: break;
2392: default:
2393: break;
2394: }
2395: break;
2396: case '=':
2397: if ('=' == v[*pos + 1])
2398: (*pos)++;
2399: break;
2400: default:
1.277 schwarze 2401: return 0;
1.204 schwarze 2402: }
2403: (*pos)++;
2404:
1.277 schwarze 2405: return *res;
1.204 schwarze 2406: }
2407:
2408: /*
2409: * Evaluate either a parenthesized numeric expression
2410: * or a single signed integer number.
2411: */
2412: static int
1.235 schwarze 2413: roff_evalpar(struct roff *r, int ln,
1.261 schwarze 2414: const char *v, int *pos, int *res, int flags)
1.204 schwarze 2415: {
2416:
2417: if ('(' != v[*pos])
1.277 schwarze 2418: return roff_getnum(v, pos, res, flags);
1.204 schwarze 2419:
2420: (*pos)++;
1.261 schwarze 2421: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.277 schwarze 2422: return 0;
1.204 schwarze 2423:
1.206 schwarze 2424: /*
2425: * Omission of the closing parenthesis
2426: * is an error in validation mode,
2427: * but ignored in evaluation mode.
2428: */
2429:
1.204 schwarze 2430: if (')' == v[*pos])
2431: (*pos)++;
1.206 schwarze 2432: else if (NULL == res)
1.277 schwarze 2433: return 0;
1.204 schwarze 2434:
1.277 schwarze 2435: return 1;
1.204 schwarze 2436: }
2437:
2438: /*
2439: * Evaluate a complete numeric expression.
2440: * Proceed left to right, there is no concept of precedence.
2441: */
2442: static int
1.235 schwarze 2443: roff_evalnum(struct roff *r, int ln, const char *v,
1.261 schwarze 2444: int *pos, int *res, int flags)
1.204 schwarze 2445: {
2446: int mypos, operand2;
2447: char operator;
2448:
2449: if (NULL == pos) {
2450: mypos = 0;
2451: pos = &mypos;
2452: }
2453:
1.261 schwarze 2454: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2455: while (isspace((unsigned char)v[*pos]))
2456: (*pos)++;
2457:
1.261 schwarze 2458: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.277 schwarze 2459: return 0;
1.204 schwarze 2460:
2461: while (1) {
1.261 schwarze 2462: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2463: while (isspace((unsigned char)v[*pos]))
2464: (*pos)++;
2465:
2466: if ( ! roff_getop(v, pos, &operator))
2467: break;
2468:
1.261 schwarze 2469: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2470: while (isspace((unsigned char)v[*pos]))
2471: (*pos)++;
2472:
1.261 schwarze 2473: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.277 schwarze 2474: return 0;
1.204 schwarze 2475:
1.261 schwarze 2476: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2477: while (isspace((unsigned char)v[*pos]))
2478: (*pos)++;
1.206 schwarze 2479:
2480: if (NULL == res)
2481: continue;
1.204 schwarze 2482:
2483: switch (operator) {
1.207 schwarze 2484: case '+':
1.204 schwarze 2485: *res += operand2;
2486: break;
1.207 schwarze 2487: case '-':
1.204 schwarze 2488: *res -= operand2;
2489: break;
1.207 schwarze 2490: case '*':
1.204 schwarze 2491: *res *= operand2;
2492: break;
1.207 schwarze 2493: case '/':
1.244 schwarze 2494: if (operand2 == 0) {
1.235 schwarze 2495: mandoc_msg(MANDOCERR_DIVZERO,
1.234 kristaps 2496: r->parse, ln, *pos, v);
2497: *res = 0;
2498: break;
2499: }
1.204 schwarze 2500: *res /= operand2;
2501: break;
1.207 schwarze 2502: case '%':
1.244 schwarze 2503: if (operand2 == 0) {
2504: mandoc_msg(MANDOCERR_DIVZERO,
2505: r->parse, ln, *pos, v);
2506: *res = 0;
2507: break;
2508: }
1.204 schwarze 2509: *res %= operand2;
2510: break;
1.207 schwarze 2511: case '<':
1.204 schwarze 2512: *res = *res < operand2;
2513: break;
1.207 schwarze 2514: case '>':
1.204 schwarze 2515: *res = *res > operand2;
2516: break;
1.207 schwarze 2517: case 'l':
1.204 schwarze 2518: *res = *res <= operand2;
2519: break;
1.207 schwarze 2520: case 'g':
1.204 schwarze 2521: *res = *res >= operand2;
2522: break;
1.207 schwarze 2523: case '=':
1.204 schwarze 2524: *res = *res == operand2;
2525: break;
1.207 schwarze 2526: case '!':
1.204 schwarze 2527: *res = *res != operand2;
2528: break;
1.207 schwarze 2529: case '&':
1.204 schwarze 2530: *res = *res && operand2;
2531: break;
1.207 schwarze 2532: case ':':
1.204 schwarze 2533: *res = *res || operand2;
2534: break;
1.207 schwarze 2535: case 'i':
1.204 schwarze 2536: if (operand2 < *res)
2537: *res = operand2;
2538: break;
1.207 schwarze 2539: case 'a':
1.204 schwarze 2540: if (operand2 > *res)
2541: *res = operand2;
2542: break;
2543: default:
2544: abort();
2545: }
2546: }
1.277 schwarze 2547: return 1;
1.204 schwarze 2548: }
2549:
1.266 schwarze 2550: /* --- register management ------------------------------------------------ */
2551:
1.180 schwarze 2552: void
1.187 schwarze 2553: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.147 kristaps 2554: {
1.327 schwarze 2555: roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
1.326 schwarze 2556: }
2557:
2558: static void
2559: roff_setregn(struct roff *r, const char *name, size_t len,
1.327 schwarze 2560: int val, char sign, int step)
1.326 schwarze 2561: {
1.180 schwarze 2562: struct roffreg *reg;
2563:
2564: /* Search for an existing register with the same name. */
2565: reg = r->regtab;
2566:
1.326 schwarze 2567: while (reg != NULL && (reg->key.sz != len ||
2568: strncmp(reg->key.p, name, len) != 0))
1.180 schwarze 2569: reg = reg->next;
1.147 kristaps 2570:
1.180 schwarze 2571: if (NULL == reg) {
2572: /* Create a new register. */
2573: reg = mandoc_malloc(sizeof(struct roffreg));
1.326 schwarze 2574: reg->key.p = mandoc_strndup(name, len);
2575: reg->key.sz = len;
1.187 schwarze 2576: reg->val = 0;
1.327 schwarze 2577: reg->step = 0;
1.180 schwarze 2578: reg->next = r->regtab;
2579: r->regtab = reg;
2580: }
2581:
1.187 schwarze 2582: if ('+' == sign)
2583: reg->val += val;
2584: else if ('-' == sign)
2585: reg->val -= val;
2586: else
2587: reg->val = val;
1.327 schwarze 2588: if (step != INT_MIN)
2589: reg->step = step;
1.147 kristaps 2590: }
2591:
1.192 schwarze 2592: /*
2593: * Handle some predefined read-only number registers.
2594: * For now, return -1 if the requested register is not predefined;
2595: * in case a predefined read-only register having the value -1
2596: * were to turn up, another special value would have to be chosen.
2597: */
2598: static int
1.273 schwarze 2599: roff_getregro(const struct roff *r, const char *name)
1.192 schwarze 2600: {
2601:
2602: switch (*name) {
1.273 schwarze 2603: case '$': /* Number of arguments of the last macro evaluated. */
1.277 schwarze 2604: return r->argc;
1.207 schwarze 2605: case 'A': /* ASCII approximation mode is always off. */
1.277 schwarze 2606: return 0;
1.207 schwarze 2607: case 'g': /* Groff compatibility mode is always on. */
1.277 schwarze 2608: return 1;
1.207 schwarze 2609: case 'H': /* Fixed horizontal resolution. */
1.277 schwarze 2610: return 24;
1.207 schwarze 2611: case 'j': /* Always adjust left margin only. */
1.277 schwarze 2612: return 0;
1.207 schwarze 2613: case 'T': /* Some output device is always defined. */
1.277 schwarze 2614: return 1;
1.207 schwarze 2615: case 'V': /* Fixed vertical resolution. */
1.277 schwarze 2616: return 40;
1.192 schwarze 2617: default:
1.277 schwarze 2618: return -1;
1.192 schwarze 2619: }
2620: }
2621:
1.181 schwarze 2622: int
1.326 schwarze 2623: roff_getreg(struct roff *r, const char *name)
1.147 kristaps 2624: {
1.327 schwarze 2625: return roff_getregn(r, name, strlen(name), '\0');
1.181 schwarze 2626: }
2627:
2628: static int
1.327 schwarze 2629: roff_getregn(struct roff *r, const char *name, size_t len, char sign)
1.181 schwarze 2630: {
2631: struct roffreg *reg;
1.192 schwarze 2632: int val;
2633:
2634: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2635: val = roff_getregro(r, name + 1);
1.192 schwarze 2636: if (-1 != val)
1.277 schwarze 2637: return val;
1.192 schwarze 2638: }
1.181 schwarze 2639:
1.327 schwarze 2640: for (reg = r->regtab; reg; reg = reg->next) {
1.181 schwarze 2641: if (len == reg->key.sz &&
1.327 schwarze 2642: 0 == strncmp(name, reg->key.p, len)) {
2643: switch (sign) {
2644: case '+':
2645: reg->val += reg->step;
2646: break;
2647: case '-':
2648: reg->val -= reg->step;
2649: break;
2650: default:
2651: break;
2652: }
1.277 schwarze 2653: return reg->val;
1.327 schwarze 2654: }
2655: }
1.271 schwarze 2656:
1.327 schwarze 2657: roff_setregn(r, name, len, 0, '\0', INT_MIN);
1.277 schwarze 2658: return 0;
1.271 schwarze 2659: }
2660:
2661: static int
2662: roff_hasregn(const struct roff *r, const char *name, size_t len)
2663: {
2664: struct roffreg *reg;
2665: int val;
2666:
2667: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2668: val = roff_getregro(r, name + 1);
1.271 schwarze 2669: if (-1 != val)
1.277 schwarze 2670: return 1;
1.271 schwarze 2671: }
2672:
2673: for (reg = r->regtab; reg; reg = reg->next)
2674: if (len == reg->key.sz &&
2675: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2676: return 1;
1.147 kristaps 2677:
1.277 schwarze 2678: return 0;
1.147 kristaps 2679: }
2680:
1.180 schwarze 2681: static void
2682: roff_freereg(struct roffreg *reg)
1.147 kristaps 2683: {
1.180 schwarze 2684: struct roffreg *old_reg;
1.147 kristaps 2685:
1.180 schwarze 2686: while (NULL != reg) {
2687: free(reg->key.p);
2688: old_reg = reg;
2689: reg = reg->next;
2690: free(old_reg);
2691: }
1.147 kristaps 2692: }
1.92 schwarze 2693:
2694: static enum rofferr
1.89 kristaps 2695: roff_nr(ROFF_ARGS)
1.83 schwarze 2696: {
1.327 schwarze 2697: char *key, *val, *step;
1.212 schwarze 2698: size_t keysz;
1.327 schwarze 2699: int iv, is, len;
1.187 schwarze 2700: char sign;
1.89 kristaps 2701:
1.238 schwarze 2702: key = val = buf->buf + pos;
2703: if (*key == '\0')
1.277 schwarze 2704: return ROFF_IGN;
1.212 schwarze 2705:
2706: keysz = roff_getname(r, &val, ln, pos);
1.238 schwarze 2707: if (key[keysz] == '\\')
1.277 schwarze 2708: return ROFF_IGN;
1.89 kristaps 2709:
1.187 schwarze 2710: sign = *val;
1.238 schwarze 2711: if (sign == '+' || sign == '-')
1.187 schwarze 2712: val++;
2713:
1.327 schwarze 2714: len = 0;
2715: if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
2716: return ROFF_IGN;
2717:
2718: step = val + len;
2719: while (isspace((unsigned char)*step))
2720: step++;
2721: if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)
2722: is = INT_MIN;
1.109 kristaps 2723:
1.327 schwarze 2724: roff_setregn(r, key, keysz, iv, sign, is);
1.277 schwarze 2725: return ROFF_IGN;
1.203 schwarze 2726: }
2727:
2728: static enum rofferr
2729: roff_rr(ROFF_ARGS)
2730: {
2731: struct roffreg *reg, **prev;
1.212 schwarze 2732: char *name, *cp;
2733: size_t namesz;
1.203 schwarze 2734:
1.238 schwarze 2735: name = cp = buf->buf + pos;
2736: if (*name == '\0')
1.277 schwarze 2737: return ROFF_IGN;
1.212 schwarze 2738: namesz = roff_getname(r, &cp, ln, pos);
2739: name[namesz] = '\0';
1.203 schwarze 2740:
2741: prev = &r->regtab;
2742: while (1) {
2743: reg = *prev;
1.238 schwarze 2744: if (reg == NULL || !strcmp(name, reg->key.p))
1.203 schwarze 2745: break;
2746: prev = ®->next;
2747: }
1.238 schwarze 2748: if (reg != NULL) {
1.203 schwarze 2749: *prev = reg->next;
2750: free(reg->key.p);
2751: free(reg);
2752: }
1.277 schwarze 2753: return ROFF_IGN;
1.122 schwarze 2754: }
2755:
1.266 schwarze 2756: /* --- handler functions for roff requests -------------------------------- */
2757:
1.122 schwarze 2758: static enum rofferr
2759: roff_rm(ROFF_ARGS)
2760: {
2761: const char *name;
2762: char *cp;
1.212 schwarze 2763: size_t namesz;
1.122 schwarze 2764:
1.238 schwarze 2765: cp = buf->buf + pos;
2766: while (*cp != '\0') {
1.212 schwarze 2767: name = cp;
1.238 schwarze 2768: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.212 schwarze 2769: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.311 schwarze 2770: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.238 schwarze 2771: if (name[namesz] == '\\')
1.212 schwarze 2772: break;
1.122 schwarze 2773: }
1.277 schwarze 2774: return ROFF_IGN;
1.178 schwarze 2775: }
2776:
2777: static enum rofferr
2778: roff_it(ROFF_ARGS)
2779: {
2780: int iv;
2781:
2782: /* Parse the number of lines. */
1.261 schwarze 2783:
2784: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.222 schwarze 2785: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.238 schwarze 2786: ln, ppos, buf->buf + 1);
1.277 schwarze 2787: return ROFF_IGN;
1.178 schwarze 2788: }
2789:
1.262 schwarze 2790: while (isspace((unsigned char)buf->buf[pos]))
2791: pos++;
2792:
2793: /*
2794: * Arm the input line trap.
2795: * Special-casing "an-trap" is an ugly workaround to cope
2796: * with DocBook stupidly fiddling with man(7) internals.
2797: */
1.261 schwarze 2798:
1.178 schwarze 2799: roffit_lines = iv;
1.262 schwarze 2800: roffit_macro = mandoc_strdup(iv != 1 ||
2801: strcmp(buf->buf + pos, "an-trap") ?
2802: buf->buf + pos : "br");
1.277 schwarze 2803: return ROFF_IGN;
1.175 schwarze 2804: }
2805:
2806: static enum rofferr
2807: roff_Dd(ROFF_ARGS)
2808: {
1.315 schwarze 2809: int mask;
2810: enum roff_tok t, te;
1.227 schwarze 2811:
1.315 schwarze 2812: switch (tok) {
2813: case ROFF_Dd:
2814: tok = MDOC_Dd;
2815: te = MDOC_MAX;
2816: if (r->format == 0)
2817: r->format = MPARSE_MDOC;
2818: mask = MPARSE_MDOC | MPARSE_QUICK;
2819: break;
2820: case ROFF_TH:
2821: tok = MAN_TH;
2822: te = MAN_MAX;
2823: if (r->format == 0)
2824: r->format = MPARSE_MAN;
2825: mask = MPARSE_QUICK;
2826: break;
2827: default:
2828: abort();
2829: }
2830: if ((r->options & mask) == 0)
2831: for (t = tok; t < te; t++)
2832: roff_setstr(r, roff_name[t], NULL, 0);
1.277 schwarze 2833: return ROFF_CONT;
1.109 kristaps 2834: }
2835:
2836: static enum rofferr
2837: roff_TE(ROFF_ARGS)
2838: {
1.321 schwarze 2839: if (r->tbl == NULL) {
1.221 schwarze 2840: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2841: ln, ppos, "TE");
1.321 schwarze 2842: return ROFF_IGN;
2843: }
2844: if (tbl_end(r->tbl) == 0) {
2845: r->tbl = NULL;
1.258 schwarze 2846: free(buf->buf);
2847: buf->buf = mandoc_strdup(".sp");
2848: buf->sz = 4;
1.329 schwarze 2849: *offs = 0;
1.277 schwarze 2850: return ROFF_REPARSE;
1.258 schwarze 2851: }
1.321 schwarze 2852: r->tbl = NULL;
1.277 schwarze 2853: return ROFF_IGN;
1.112 kristaps 2854: }
2855:
2856: static enum rofferr
2857: roff_T_(ROFF_ARGS)
2858: {
2859:
2860: if (NULL == r->tbl)
1.221 schwarze 2861: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2862: ln, ppos, "T&");
1.112 kristaps 2863: else
1.296 schwarze 2864: tbl_restart(ln, ppos, r->tbl);
1.112 kristaps 2865:
1.277 schwarze 2866: return ROFF_IGN;
1.109 kristaps 2867: }
2868:
1.230 schwarze 2869: /*
2870: * Handle in-line equation delimiters.
2871: */
2872: static enum rofferr
1.238 schwarze 2873: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.151 kristaps 2874: {
1.233 schwarze 2875: char *cp1, *cp2;
2876: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.151 kristaps 2877:
1.230 schwarze 2878: /*
2879: * Outside equations, look for an opening delimiter.
2880: * If we are inside an equation, we already know it is
2881: * in-line, or this function wouldn't have been called;
2882: * so look for a closing delimiter.
2883: */
2884:
1.238 schwarze 2885: cp1 = buf->buf + pos;
1.230 schwarze 2886: cp2 = strchr(cp1, r->eqn == NULL ?
2887: r->last_eqn->odelim : r->last_eqn->cdelim);
2888: if (cp2 == NULL)
1.277 schwarze 2889: return ROFF_CONT;
1.230 schwarze 2890:
1.233 schwarze 2891: *cp2++ = '\0';
2892: bef_pr = bef_nl = aft_nl = aft_pr = "";
2893:
2894: /* Handle preceding text, protecting whitespace. */
2895:
1.238 schwarze 2896: if (*buf->buf != '\0') {
1.233 schwarze 2897: if (r->eqn == NULL)
2898: bef_pr = "\\&";
2899: bef_nl = "\n";
2900: }
2901:
2902: /*
2903: * Prepare replacing the delimiter with an equation macro
2904: * and drop leading white space from the equation.
2905: */
1.230 schwarze 2906:
1.233 schwarze 2907: if (r->eqn == NULL) {
2908: while (*cp2 == ' ')
2909: cp2++;
2910: mac = ".EQ";
2911: } else
2912: mac = ".EN";
2913:
2914: /* Handle following text, protecting whitespace. */
2915:
2916: if (*cp2 != '\0') {
2917: aft_nl = "\n";
2918: if (r->eqn != NULL)
2919: aft_pr = "\\&";
2920: }
2921:
2922: /* Do the actual replacement. */
2923:
1.238 schwarze 2924: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.233 schwarze 2925: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.238 schwarze 2926: free(buf->buf);
2927: buf->buf = cp1;
1.230 schwarze 2928:
2929: /* Toggle the in-line state of the eqn subsystem. */
2930:
2931: r->eqn_inline = r->eqn == NULL;
1.277 schwarze 2932: return ROFF_REPARSE;
1.151 kristaps 2933: }
2934:
1.235 schwarze 2935: static enum rofferr
2936: roff_EQ(ROFF_ARGS)
1.125 kristaps 2937: {
1.319 schwarze 2938: struct roff_node *n;
2939:
1.322 schwarze 2940: if (r->man->macroset == MACROSET_MAN)
2941: man_breakscope(r->man, ROFF_EQ);
1.319 schwarze 2942: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
2943: if (ln > r->man->last->line)
2944: n->flags |= NODE_LINE;
2945: n->eqn = mandoc_calloc(1, sizeof(*n->eqn));
2946: n->eqn->expectargs = UINT_MAX;
2947: roff_node_append(r->man, n);
2948: r->man->next = ROFF_NEXT_SIBLING;
1.125 kristaps 2949:
1.238 schwarze 2950: assert(r->eqn == NULL);
1.319 schwarze 2951: if (r->last_eqn == NULL)
2952: r->last_eqn = eqn_alloc(r->parse);
2953: else
2954: eqn_reset(r->last_eqn);
2955: r->eqn = r->last_eqn;
2956: r->eqn->node = n;
1.151 kristaps 2957:
1.238 schwarze 2958: if (buf->buf[pos] != '\0')
1.235 schwarze 2959: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 2960: ".EQ %s", buf->buf + pos);
1.151 kristaps 2961:
1.277 schwarze 2962: return ROFF_IGN;
1.125 kristaps 2963: }
2964:
2965: static enum rofferr
2966: roff_EN(ROFF_ARGS)
2967: {
1.319 schwarze 2968: if (r->eqn != NULL) {
2969: eqn_parse(r->eqn);
2970: r->eqn = NULL;
2971: } else
2972: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
2973: if (buf->buf[pos] != '\0')
2974: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
2975: "EN %s", buf->buf + pos);
1.277 schwarze 2976: return ROFF_IGN;
1.125 kristaps 2977: }
2978:
2979: static enum rofferr
1.109 kristaps 2980: roff_TS(ROFF_ARGS)
2981: {
1.321 schwarze 2982: if (r->tbl != NULL) {
1.221 schwarze 2983: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
2984: ln, ppos, "TS breaks TS");
1.321 schwarze 2985: tbl_end(r->tbl);
1.115 kristaps 2986: }
1.321 schwarze 2987: r->tbl = tbl_alloc(ppos, ln, r->parse);
1.113 kristaps 2988: if (r->last_tbl)
1.321 schwarze 2989: r->last_tbl->next = r->tbl;
1.113 kristaps 2990: else
1.321 schwarze 2991: r->first_tbl = r->tbl;
2992: r->last_tbl = r->tbl;
1.297 schwarze 2993: return ROFF_IGN;
2994: }
2995:
2996: static enum rofferr
2997: roff_onearg(ROFF_ARGS)
2998: {
2999: struct roff_node *n;
3000: char *cp;
1.305 schwarze 3001: int npos;
1.297 schwarze 3002:
1.302 schwarze 3003: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.320 schwarze 3004: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
3005: tok == ROFF_ti))
1.302 schwarze 3006: man_breakscope(r->man, tok);
3007:
1.309 schwarze 3008: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.305 schwarze 3009: r->man->last = roffce_node;
3010: r->man->next = ROFF_NEXT_SIBLING;
3011: }
3012:
1.297 schwarze 3013: roff_elem_alloc(r->man, ln, ppos, tok);
3014: n = r->man->last;
3015:
3016: cp = buf->buf + pos;
3017: if (*cp != '\0') {
3018: while (*cp != '\0' && *cp != ' ')
3019: cp++;
3020: while (*cp == ' ')
3021: *cp++ = '\0';
3022: if (*cp != '\0')
3023: mandoc_vmsg(MANDOCERR_ARG_EXCESS,
3024: r->parse, ln, cp - buf->buf,
3025: "%s ... %s", roff_name[tok], cp);
3026: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.300 schwarze 3027: }
3028:
1.309 schwarze 3029: if (tok == ROFF_ce || tok == ROFF_rj) {
3030: if (r->man->last->type == ROFFT_ELEM) {
1.305 schwarze 3031: roff_word_alloc(r->man, ln, pos, "1");
3032: r->man->last->flags |= NODE_NOSRC;
3033: }
3034: npos = 0;
3035: if (roff_evalnum(r, ln, r->man->last->string, &npos,
3036: &roffce_lines, 0) == 0) {
3037: mandoc_vmsg(MANDOCERR_CE_NONUM,
3038: r->parse, ln, pos, "ce %s", buf->buf + pos);
3039: roffce_lines = 1;
3040: }
3041: if (roffce_lines < 1) {
3042: r->man->last = r->man->last->parent;
3043: roffce_node = NULL;
3044: roffce_lines = 0;
3045: } else
3046: roffce_node = r->man->last->parent;
3047: } else {
3048: n->flags |= NODE_VALID | NODE_ENDED;
3049: r->man->last = n;
3050: }
3051: n->flags |= NODE_LINE;
1.300 schwarze 3052: r->man->next = ROFF_NEXT_SIBLING;
3053: return ROFF_IGN;
3054: }
3055:
3056: static enum rofferr
3057: roff_manyarg(ROFF_ARGS)
3058: {
3059: struct roff_node *n;
3060: char *sp, *ep;
3061:
3062: roff_elem_alloc(r->man, ln, ppos, tok);
3063: n = r->man->last;
3064:
3065: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3066: while (*ep != '\0' && *ep != ' ')
3067: ep++;
3068: while (*ep == ' ')
3069: *ep++ = '\0';
3070: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.297 schwarze 3071: }
3072:
3073: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3074: r->man->last = n;
3075: r->man->next = ROFF_NEXT_SIBLING;
1.277 schwarze 3076: return ROFF_IGN;
1.251 schwarze 3077: }
3078:
3079: static enum rofferr
1.311 schwarze 3080: roff_als(ROFF_ARGS)
3081: {
3082: char *oldn, *newn, *end, *value;
3083: size_t oldsz, newsz, valsz;
3084:
3085: newn = oldn = buf->buf + pos;
3086: if (*newn == '\0')
3087: return ROFF_IGN;
3088:
3089: newsz = roff_getname(r, &oldn, ln, pos);
3090: if (newn[newsz] == '\\' || *oldn == '\0')
3091: return ROFF_IGN;
3092:
3093: end = oldn;
3094: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3095: if (oldsz == 0)
3096: return ROFF_IGN;
3097:
1.315 schwarze 3098: valsz = mandoc_asprintf(&value, ".%.*s \\$*\\\"\n",
3099: (int)oldsz, oldn);
1.311 schwarze 3100: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3101: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3102: free(value);
3103: return ROFF_IGN;
3104: }
3105:
3106: static enum rofferr
1.296 schwarze 3107: roff_br(ROFF_ARGS)
1.251 schwarze 3108: {
1.302 schwarze 3109: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3110: man_breakscope(r->man, ROFF_br);
1.296 schwarze 3111: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
3112: if (buf->buf[pos] != '\0')
3113: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
3114: "%s %s", roff_name[tok], buf->buf + pos);
3115: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3116: r->man->next = ROFF_NEXT_SIBLING;
3117: return ROFF_IGN;
1.92 schwarze 3118: }
3119:
1.105 kristaps 3120: static enum rofferr
1.174 kristaps 3121: roff_cc(ROFF_ARGS)
3122: {
3123: const char *p;
3124:
1.238 schwarze 3125: p = buf->buf + pos;
1.174 kristaps 3126:
1.238 schwarze 3127: if (*p == '\0' || (r->control = *p++) == '.')
1.303 schwarze 3128: r->control = '\0';
1.174 kristaps 3129:
1.238 schwarze 3130: if (*p != '\0')
1.260 schwarze 3131: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3132: ln, p - buf->buf, "cc ... %s", p);
1.174 kristaps 3133:
1.277 schwarze 3134: return ROFF_IGN;
1.174 kristaps 3135: }
3136:
3137: static enum rofferr
1.303 schwarze 3138: roff_ec(ROFF_ARGS)
3139: {
3140: const char *p;
3141:
3142: p = buf->buf + pos;
3143: if (*p == '\0')
3144: r->escape = '\\';
3145: else {
3146: r->escape = *p;
3147: if (*++p != '\0')
3148: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3149: ln, p - buf->buf, "ec ... %s", p);
3150: }
3151: return ROFF_IGN;
3152: }
3153:
3154: static enum rofferr
3155: roff_eo(ROFF_ARGS)
3156: {
3157: r->escape = '\0';
3158: if (buf->buf[pos] != '\0')
3159: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse,
3160: ln, pos, "eo %s", buf->buf + pos);
3161: return ROFF_IGN;
1.330 ! schwarze 3162: }
! 3163:
! 3164: static enum rofferr
! 3165: roff_nop(ROFF_ARGS)
! 3166: {
! 3167: while (buf->buf[pos] == ' ')
! 3168: pos++;
! 3169: *offs = pos;
! 3170: return ROFF_RERUN;
1.303 schwarze 3171: }
3172:
3173: static enum rofferr
1.164 kristaps 3174: roff_tr(ROFF_ARGS)
3175: {
3176: const char *p, *first, *second;
3177: size_t fsz, ssz;
3178: enum mandoc_esc esc;
3179:
1.238 schwarze 3180: p = buf->buf + pos;
1.164 kristaps 3181:
1.238 schwarze 3182: if (*p == '\0') {
1.260 schwarze 3183: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.277 schwarze 3184: return ROFF_IGN;
1.164 kristaps 3185: }
3186:
1.238 schwarze 3187: while (*p != '\0') {
1.164 kristaps 3188: fsz = ssz = 1;
3189:
3190: first = p++;
1.238 schwarze 3191: if (*first == '\\') {
1.164 kristaps 3192: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3193: if (esc == ESCAPE_ERROR) {
1.219 schwarze 3194: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 3195: ln, (int)(p - buf->buf), first);
1.277 schwarze 3196: return ROFF_IGN;
1.164 kristaps 3197: }
3198: fsz = (size_t)(p - first);
3199: }
3200:
3201: second = p++;
1.238 schwarze 3202: if (*second == '\\') {
1.164 kristaps 3203: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3204: if (esc == ESCAPE_ERROR) {
1.219 schwarze 3205: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 3206: ln, (int)(p - buf->buf), second);
1.277 schwarze 3207: return ROFF_IGN;
1.164 kristaps 3208: }
3209: ssz = (size_t)(p - second);
1.238 schwarze 3210: } else if (*second == '\0') {
1.260 schwarze 3211: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
3212: ln, first - buf->buf, "tr %s", first);
1.164 kristaps 3213: second = " ";
1.165 kristaps 3214: p--;
1.164 kristaps 3215: }
3216:
1.167 kristaps 3217: if (fsz > 1) {
1.207 schwarze 3218: roff_setstrn(&r->xmbtab, first, fsz,
3219: second, ssz, 0);
1.167 kristaps 3220: continue;
3221: }
3222:
1.238 schwarze 3223: if (r->xtab == NULL)
1.207 schwarze 3224: r->xtab = mandoc_calloc(128,
3225: sizeof(struct roffstr));
1.167 kristaps 3226:
3227: free(r->xtab[(int)*first].p);
3228: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3229: r->xtab[(int)*first].sz = ssz;
1.164 kristaps 3230: }
3231:
1.277 schwarze 3232: return ROFF_IGN;
1.164 kristaps 3233: }
3234:
3235: static enum rofferr
1.306 schwarze 3236: roff_rn(ROFF_ARGS)
3237: {
3238: const char *value;
3239: char *oldn, *newn, *end;
3240: size_t oldsz, newsz;
1.315 schwarze 3241: int deftype;
1.306 schwarze 3242:
3243: oldn = newn = buf->buf + pos;
3244: if (*oldn == '\0')
3245: return ROFF_IGN;
3246:
3247: oldsz = roff_getname(r, &newn, ln, pos);
3248: if (oldn[oldsz] == '\\' || *newn == '\0')
3249: return ROFF_IGN;
3250:
3251: end = newn;
3252: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3253: if (newsz == 0)
3254: return ROFF_IGN;
3255:
1.315 schwarze 3256: deftype = ROFFDEF_ANY;
3257: value = roff_getstrn(r, oldn, oldsz, &deftype);
3258: switch (deftype) {
3259: case ROFFDEF_USER:
1.306 schwarze 3260: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3261: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3262: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.315 schwarze 3263: break;
3264: case ROFFDEF_PRE:
3265: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3266: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3267: break;
3268: case ROFFDEF_REN:
1.306 schwarze 3269: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3270: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.315 schwarze 3271: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3272: break;
3273: case ROFFDEF_STD:
1.306 schwarze 3274: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.315 schwarze 3275: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3276: break;
3277: default:
3278: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3279: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3280: break;
3281: }
1.306 schwarze 3282: return ROFF_IGN;
3283: }
3284:
3285: static enum rofferr
1.105 kristaps 3286: roff_so(ROFF_ARGS)
3287: {
1.249 schwarze 3288: char *name, *cp;
1.105 kristaps 3289:
1.238 schwarze 3290: name = buf->buf + pos;
1.224 schwarze 3291: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.105 kristaps 3292:
3293: /*
3294: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3295: * opening anything that's not in our cwd or anything beneath
3296: * it. Thus, explicitly disallow traversing up the file-system
3297: * or using absolute paths.
3298: */
3299:
1.238 schwarze 3300: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.210 schwarze 3301: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
3302: ".so %s", name);
1.249 schwarze 3303: buf->sz = mandoc_asprintf(&cp,
3304: ".sp\nSee the file %s.\n.sp", name) + 1;
3305: free(buf->buf);
3306: buf->buf = cp;
3307: *offs = 0;
1.277 schwarze 3308: return ROFF_REPARSE;
1.105 kristaps 3309: }
3310:
3311: *offs = pos;
1.277 schwarze 3312: return ROFF_SO;
1.105 kristaps 3313: }
1.92 schwarze 3314:
1.266 schwarze 3315: /* --- user defined strings and macros ------------------------------------ */
3316:
1.106 kristaps 3317: static enum rofferr
3318: roff_userdef(ROFF_ARGS)
1.99 kristaps 3319: {
1.311 schwarze 3320: const char *arg[16], *ap;
1.106 kristaps 3321: char *cp, *n1, *n2;
1.292 schwarze 3322: int expand_count, i, ib, ie;
1.263 schwarze 3323: size_t asz, rsz;
1.106 kristaps 3324:
3325: /*
3326: * Collect pointers to macro argument strings
1.188 schwarze 3327: * and NUL-terminate them.
1.106 kristaps 3328: */
1.263 schwarze 3329:
1.273 schwarze 3330: r->argc = 0;
1.238 schwarze 3331: cp = buf->buf + pos;
1.311 schwarze 3332: for (i = 0; i < 16; i++) {
1.273 schwarze 3333: if (*cp == '\0')
3334: arg[i] = "";
3335: else {
3336: arg[i] = mandoc_getarg(r->parse, &cp, ln, &pos);
3337: r->argc = i + 1;
3338: }
3339: }
1.99 kristaps 3340:
1.106 kristaps 3341: /*
3342: * Expand macro arguments.
1.99 kristaps 3343: */
1.263 schwarze 3344:
3345: buf->sz = strlen(r->current_string) + 1;
1.292 schwarze 3346: n1 = n2 = cp = mandoc_malloc(buf->sz);
1.263 schwarze 3347: memcpy(n1, r->current_string, buf->sz);
1.292 schwarze 3348: expand_count = 0;
1.263 schwarze 3349: while (*cp != '\0') {
3350:
3351: /* Scan ahead for the next argument invocation. */
3352:
3353: if (*cp++ != '\\')
3354: continue;
3355: if (*cp++ != '$')
3356: continue;
1.274 schwarze 3357: if (*cp == '*') { /* \\$* inserts all arguments */
3358: ib = 0;
3359: ie = r->argc - 1;
3360: } else { /* \\$1 .. \\$9 insert one argument */
3361: ib = ie = *cp - '1';
3362: if (ib < 0 || ib > 8)
3363: continue;
3364: }
1.263 schwarze 3365: cp -= 2;
1.292 schwarze 3366:
3367: /*
3368: * Prevent infinite recursion.
3369: */
3370:
3371: if (cp >= n2)
3372: expand_count = 1;
3373: else if (++expand_count > EXPAND_LIMIT) {
3374: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
3375: ln, (int)(cp - n1), NULL);
1.293 schwarze 3376: free(buf->buf);
3377: buf->buf = n1;
1.329 schwarze 3378: *offs = 0;
1.292 schwarze 3379: return ROFF_IGN;
3380: }
1.263 schwarze 3381:
3382: /*
3383: * Determine the size of the expanded argument,
3384: * taking escaping of quotes into account.
3385: */
3386:
1.274 schwarze 3387: asz = ie > ib ? ie - ib : 0; /* for blanks */
3388: for (i = ib; i <= ie; i++) {
3389: for (ap = arg[i]; *ap != '\0'; ap++) {
3390: asz++;
3391: if (*ap == '"')
3392: asz += 3;
3393: }
1.263 schwarze 3394: }
3395: if (asz != 3) {
3396:
3397: /*
3398: * Determine the size of the rest of the
3399: * unexpanded macro, including the NUL.
3400: */
3401:
3402: rsz = buf->sz - (cp - n1) - 3;
3403:
3404: /*
3405: * When shrinking, move before
3406: * releasing the storage.
3407: */
3408:
3409: if (asz < 3)
3410: memmove(cp + asz, cp + 3, rsz);
3411:
3412: /*
3413: * Resize the storage for the macro
3414: * and readjust the parse pointer.
3415: */
3416:
3417: buf->sz += asz - 3;
3418: n2 = mandoc_realloc(n1, buf->sz);
3419: cp = n2 + (cp - n1);
3420: n1 = n2;
3421:
3422: /*
3423: * When growing, make room
3424: * for the expanded argument.
3425: */
3426:
3427: if (asz > 3)
3428: memmove(cp + asz, cp + 3, rsz);
3429: }
3430:
3431: /* Copy the expanded argument, escaping quotes. */
3432:
3433: n2 = cp;
1.274 schwarze 3434: for (i = ib; i <= ie; i++) {
3435: for (ap = arg[i]; *ap != '\0'; ap++) {
3436: if (*ap == '"') {
3437: memcpy(n2, "\\(dq", 4);
3438: n2 += 4;
3439: } else
3440: *n2++ = *ap;
3441: }
3442: if (i < ie)
3443: *n2++ = ' ';
1.106 kristaps 3444: }
1.99 kristaps 3445: }
3446:
1.106 kristaps 3447: /*
3448: * Replace the macro invocation
3449: * by the expanded macro.
3450: */
1.263 schwarze 3451:
1.238 schwarze 3452: free(buf->buf);
3453: buf->buf = n1;
1.248 schwarze 3454: *offs = 0;
1.106 kristaps 3455:
1.277 schwarze 3456: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
3457: ROFF_REPARSE : ROFF_APPEND;
1.99 kristaps 3458: }
1.121 schwarze 3459:
1.306 schwarze 3460: /*
3461: * Calling a high-level macro that was renamed with .rn.
3462: * r->current_string has already been set up by roff_parse().
3463: */
3464: static enum rofferr
3465: roff_renamed(ROFF_ARGS)
3466: {
3467: char *nbuf;
3468:
1.315 schwarze 3469: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
3470: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.306 schwarze 3471: free(buf->buf);
3472: buf->buf = nbuf;
1.329 schwarze 3473: *offs = 0;
1.306 schwarze 3474: return ROFF_CONT;
3475: }
3476:
1.212 schwarze 3477: static size_t
1.121 schwarze 3478: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3479: {
3480: char *name, *cp;
1.212 schwarze 3481: size_t namesz;
1.121 schwarze 3482:
3483: name = *cpp;
3484: if ('\0' == *name)
1.277 schwarze 3485: return 0;
1.121 schwarze 3486:
1.212 schwarze 3487: /* Read until end of name and terminate it with NUL. */
3488: for (cp = name; 1; cp++) {
3489: if ('\0' == *cp || ' ' == *cp) {
3490: namesz = cp - name;
3491: break;
3492: }
1.121 schwarze 3493: if ('\\' != *cp)
3494: continue;
1.215 schwarze 3495: namesz = cp - name;
3496: if ('{' == cp[1] || '}' == cp[1])
3497: break;
1.121 schwarze 3498: cp++;
3499: if ('\\' == *cp)
3500: continue;
1.224 schwarze 3501: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3502: "%.*s", (int)(cp - name + 1), name);
1.212 schwarze 3503: mandoc_escape((const char **)&cp, NULL, NULL);
3504: break;
1.121 schwarze 3505: }
3506:
3507: /* Read past spaces. */
3508: while (' ' == *cp)
3509: cp++;
3510:
3511: *cpp = cp;
1.277 schwarze 3512: return namesz;
1.121 schwarze 3513: }
3514:
1.106 kristaps 3515: /*
3516: * Store *string into the user-defined string called *name.
3517: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.193 schwarze 3518: * append == 0: replace mode
3519: * append == 1: single-line append mode
3520: * append == 2: multiline append mode, append '\n' after each call
1.106 kristaps 3521: */
1.94 kristaps 3522: static void
1.106 kristaps 3523: roff_setstr(struct roff *r, const char *name, const char *string,
1.193 schwarze 3524: int append)
1.92 schwarze 3525: {
1.315 schwarze 3526: size_t namesz;
1.164 kristaps 3527:
1.315 schwarze 3528: namesz = strlen(name);
3529: roff_setstrn(&r->strtab, name, namesz, string,
1.207 schwarze 3530: string ? strlen(string) : 0, append);
1.315 schwarze 3531: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.164 kristaps 3532: }
3533:
3534: static void
1.166 kristaps 3535: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.193 schwarze 3536: const char *string, size_t stringsz, int append)
1.164 kristaps 3537: {
1.166 kristaps 3538: struct roffkv *n;
1.164 kristaps 3539: char *c;
3540: int i;
3541: size_t oldch, newch;
1.92 schwarze 3542:
1.106 kristaps 3543: /* Search for an existing string with the same name. */
1.164 kristaps 3544: n = *r;
3545:
1.211 schwarze 3546: while (n && (namesz != n->key.sz ||
3547: strncmp(n->key.p, name, namesz)))
1.92 schwarze 3548: n = n->next;
1.94 kristaps 3549:
3550: if (NULL == n) {
1.106 kristaps 3551: /* Create a new string table entry. */
1.166 kristaps 3552: n = mandoc_malloc(sizeof(struct roffkv));
3553: n->key.p = mandoc_strndup(name, namesz);
3554: n->key.sz = namesz;
3555: n->val.p = NULL;
3556: n->val.sz = 0;
1.164 kristaps 3557: n->next = *r;
3558: *r = n;
1.193 schwarze 3559: } else if (0 == append) {
1.166 kristaps 3560: free(n->val.p);
3561: n->val.p = NULL;
3562: n->val.sz = 0;
1.106 kristaps 3563: }
3564:
3565: if (NULL == string)
3566: return;
3567:
3568: /*
3569: * One additional byte for the '\n' in multiline mode,
3570: * and one for the terminating '\0'.
3571: */
1.193 schwarze 3572: newch = stringsz + (1 < append ? 2u : 1u);
1.164 kristaps 3573:
1.166 kristaps 3574: if (NULL == n->val.p) {
3575: n->val.p = mandoc_malloc(newch);
3576: *n->val.p = '\0';
1.106 kristaps 3577: oldch = 0;
3578: } else {
1.166 kristaps 3579: oldch = n->val.sz;
3580: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.106 kristaps 3581: }
3582:
3583: /* Skip existing content in the destination buffer. */
1.166 kristaps 3584: c = n->val.p + (int)oldch;
1.106 kristaps 3585:
3586: /* Append new content to the destination buffer. */
1.164 kristaps 3587: i = 0;
3588: while (i < (int)stringsz) {
1.106 kristaps 3589: /*
3590: * Rudimentary roff copy mode:
3591: * Handle escaped backslashes.
3592: */
1.164 kristaps 3593: if ('\\' == string[i] && '\\' == string[i + 1])
3594: i++;
3595: *c++ = string[i++];
1.106 kristaps 3596: }
1.94 kristaps 3597:
1.106 kristaps 3598: /* Append terminating bytes. */
1.193 schwarze 3599: if (1 < append)
1.106 kristaps 3600: *c++ = '\n';
1.163 kristaps 3601:
1.106 kristaps 3602: *c = '\0';
1.166 kristaps 3603: n->val.sz = (int)(c - n->val.p);
1.92 schwarze 3604: }
3605:
1.94 kristaps 3606: static const char *
1.325 schwarze 3607: roff_getstrn(struct roff *r, const char *name, size_t len,
1.315 schwarze 3608: int *deftype)
1.92 schwarze 3609: {
1.315 schwarze 3610: const struct roffkv *n;
1.325 schwarze 3611: int found, i;
1.315 schwarze 3612: enum roff_tok tok;
3613:
1.325 schwarze 3614: found = 0;
3615: for (n = r->strtab; n != NULL; n = n->next) {
3616: if (strncmp(name, n->key.p, len) != 0 ||
3617: n->key.p[len] != '\0' || n->val.p == NULL)
3618: continue;
3619: if (*deftype & ROFFDEF_USER) {
3620: *deftype = ROFFDEF_USER;
3621: return n->val.p;
3622: } else {
3623: found = 1;
3624: break;
3625: }
3626: }
3627: for (n = r->rentab; n != NULL; n = n->next) {
3628: if (strncmp(name, n->key.p, len) != 0 ||
3629: n->key.p[len] != '\0' || n->val.p == NULL)
3630: continue;
3631: if (*deftype & ROFFDEF_REN) {
3632: *deftype = ROFFDEF_REN;
3633: return n->val.p;
3634: } else {
3635: found = 1;
3636: break;
1.315 schwarze 3637: }
3638: }
1.325 schwarze 3639: for (i = 0; i < PREDEFS_MAX; i++) {
3640: if (strncmp(name, predefs[i].name, len) != 0 ||
3641: predefs[i].name[len] != '\0')
3642: continue;
3643: if (*deftype & ROFFDEF_PRE) {
3644: *deftype = ROFFDEF_PRE;
3645: return predefs[i].str;
3646: } else {
3647: found = 1;
3648: break;
1.315 schwarze 3649: }
3650: }
1.325 schwarze 3651: if (r->man->macroset != MACROSET_MAN) {
3652: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
3653: if (strncmp(name, roff_name[tok], len) != 0 ||
3654: roff_name[tok][len] != '\0')
3655: continue;
3656: if (*deftype & ROFFDEF_STD) {
3657: *deftype = ROFFDEF_STD;
3658: return NULL;
3659: } else {
3660: found = 1;
3661: break;
1.315 schwarze 3662: }
3663: }
3664: }
1.325 schwarze 3665: if (r->man->macroset != MACROSET_MDOC) {
3666: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
3667: if (strncmp(name, roff_name[tok], len) != 0 ||
3668: roff_name[tok][len] != '\0')
3669: continue;
3670: if (*deftype & ROFFDEF_STD) {
3671: *deftype = ROFFDEF_STD;
3672: return NULL;
3673: } else {
3674: found = 1;
3675: break;
1.315 schwarze 3676: }
3677: }
1.325 schwarze 3678: }
3679:
3680: if (found == 0 && *deftype != ROFFDEF_ANY) {
3681: if (*deftype & ROFFDEF_REN) {
3682: /*
3683: * This might still be a request,
3684: * so do not treat it as undefined yet.
3685: */
3686: *deftype = ROFFDEF_UNDEF;
3687: return NULL;
1.315 schwarze 3688: }
1.325 schwarze 3689:
3690: /* Using an undefined string defines it to be empty. */
3691:
3692: roff_setstrn(&r->strtab, name, len, "", 0, 0);
3693: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.315 schwarze 3694: }
1.325 schwarze 3695:
1.315 schwarze 3696: *deftype = 0;
1.277 schwarze 3697: return NULL;
1.92 schwarze 3698: }
3699:
1.94 kristaps 3700: static void
1.167 kristaps 3701: roff_freestr(struct roffkv *r)
1.92 schwarze 3702: {
1.166 kristaps 3703: struct roffkv *n, *nn;
1.92 schwarze 3704:
1.167 kristaps 3705: for (n = r; n; n = nn) {
1.166 kristaps 3706: free(n->key.p);
3707: free(n->val.p);
1.92 schwarze 3708: nn = n->next;
3709: free(n);
3710: }
1.114 kristaps 3711: }
1.266 schwarze 3712:
3713: /* --- accessors and utility functions ------------------------------------ */
1.164 kristaps 3714:
3715: /*
3716: * Duplicate an input string, making the appropriate character
3717: * conversations (as stipulated by `tr') along the way.
3718: * Returns a heap-allocated string with all the replacements made.
3719: */
3720: char *
3721: roff_strdup(const struct roff *r, const char *p)
3722: {
1.166 kristaps 3723: const struct roffkv *cp;
1.164 kristaps 3724: char *res;
3725: const char *pp;
3726: size_t ssz, sz;
3727: enum mandoc_esc esc;
3728:
1.167 kristaps 3729: if (NULL == r->xmbtab && NULL == r->xtab)
1.277 schwarze 3730: return mandoc_strdup(p);
1.164 kristaps 3731: else if ('\0' == *p)
1.277 schwarze 3732: return mandoc_strdup("");
1.164 kristaps 3733:
3734: /*
3735: * Step through each character looking for term matches
3736: * (remember that a `tr' can be invoked with an escape, which is
3737: * a glyph but the escape is multi-character).
3738: * We only do this if the character hash has been initialised
3739: * and the string is >0 length.
3740: */
3741:
3742: res = NULL;
3743: ssz = 0;
3744:
3745: while ('\0' != *p) {
1.289 schwarze 3746: assert((unsigned int)*p < 128);
3747: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.167 kristaps 3748: sz = r->xtab[(int)*p].sz;
3749: res = mandoc_realloc(res, ssz + sz + 1);
3750: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3751: ssz += sz;
3752: p++;
3753: continue;
3754: } else if ('\\' != *p) {
3755: res = mandoc_realloc(res, ssz + 2);
3756: res[ssz++] = *p++;
3757: continue;
3758: }
3759:
1.164 kristaps 3760: /* Search for term matches. */
1.167 kristaps 3761: for (cp = r->xmbtab; cp; cp = cp->next)
1.166 kristaps 3762: if (0 == strncmp(p, cp->key.p, cp->key.sz))
1.164 kristaps 3763: break;
3764:
3765: if (NULL != cp) {
3766: /*
3767: * A match has been found.
3768: * Append the match to the array and move
3769: * forward by its keysize.
3770: */
1.207 schwarze 3771: res = mandoc_realloc(res,
3772: ssz + cp->val.sz + 1);
1.166 kristaps 3773: memcpy(res + ssz, cp->val.p, cp->val.sz);
3774: ssz += cp->val.sz;
3775: p += (int)cp->key.sz;
1.164 kristaps 3776: continue;
3777: }
3778:
1.167 kristaps 3779: /*
3780: * Handle escapes carefully: we need to copy
3781: * over just the escape itself, or else we might
3782: * do replacements within the escape itself.
3783: * Make sure to pass along the bogus string.
3784: */
3785: pp = p++;
3786: esc = mandoc_escape(&p, NULL, NULL);
3787: if (ESCAPE_ERROR == esc) {
3788: sz = strlen(pp);
1.164 kristaps 3789: res = mandoc_realloc(res, ssz + sz + 1);
3790: memcpy(res + ssz, pp, sz);
1.167 kristaps 3791: break;
1.164 kristaps 3792: }
1.207 schwarze 3793: /*
3794: * We bail out on bad escapes.
1.167 kristaps 3795: * No need to warn: we already did so when
3796: * roff_res() was called.
3797: */
3798: sz = (int)(p - pp);
3799: res = mandoc_realloc(res, ssz + sz + 1);
3800: memcpy(res + ssz, pp, sz);
3801: ssz += sz;
1.164 kristaps 3802: }
3803:
3804: res[(int)ssz] = '\0';
1.277 schwarze 3805: return res;
1.227 schwarze 3806: }
3807:
3808: int
3809: roff_getformat(const struct roff *r)
3810: {
3811:
1.277 schwarze 3812: return r->format;
1.174 kristaps 3813: }
3814:
3815: /*
1.207 schwarze 3816: * Find out whether a line is a macro line or not.
1.174 kristaps 3817: * If it is, adjust the current position and return one; if it isn't,
3818: * return zero and don't change the current position.
3819: * If the control character has been set with `.cc', then let that grain
3820: * precedence.
3821: * This is slighly contrary to groff, where using the non-breaking
3822: * control character when `cc' has been invoked will cause the
3823: * non-breaking macro contents to be printed verbatim.
3824: */
3825: int
3826: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
3827: {
3828: int pos;
3829:
3830: pos = *ppos;
3831:
1.303 schwarze 3832: if (r->control != '\0' && cp[pos] == r->control)
1.174 kristaps 3833: pos++;
1.303 schwarze 3834: else if (r->control != '\0')
1.277 schwarze 3835: return 0;
1.174 kristaps 3836: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
3837: pos += 2;
3838: else if ('.' == cp[pos] || '\'' == cp[pos])
3839: pos++;
3840: else
1.277 schwarze 3841: return 0;
1.174 kristaps 3842:
3843: while (' ' == cp[pos] || '\t' == cp[pos])
3844: pos++;
3845:
3846: *ppos = pos;
1.277 schwarze 3847: return 1;
1.74 kristaps 3848: }
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