Annotation of mandoc/roff.c, Revision 1.328
1.328 ! schwarze 1: /* $Id: roff.c,v 1.327 2018/04/10 00:52:30 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);
1.89 kristaps 200: static enum rofferr roff_nr(ROFF_ARGS);
1.297 schwarze 201: static enum rofferr roff_onearg(ROFF_ARGS);
1.294 schwarze 202: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.214 schwarze 203: int, int);
1.305 schwarze 204: static enum rofferr roff_parsetext(struct roff *, struct buf *,
205: int, int *);
1.306 schwarze 206: static enum rofferr roff_renamed(ROFF_ARGS);
1.238 schwarze 207: static enum rofferr roff_res(struct roff *, struct buf *, int, int);
1.122 schwarze 208: static enum rofferr roff_rm(ROFF_ARGS);
1.306 schwarze 209: static enum rofferr roff_rn(ROFF_ARGS);
1.203 schwarze 210: static enum rofferr roff_rr(ROFF_ARGS);
1.326 schwarze 211: static void roff_setregn(struct roff *, const char *,
1.327 schwarze 212: size_t, int, char, int);
1.94 kristaps 213: static void roff_setstr(struct roff *,
1.106 kristaps 214: const char *, const char *, int);
1.207 schwarze 215: static void roff_setstrn(struct roffkv **, const char *,
1.164 kristaps 216: size_t, const char *, size_t, int);
1.105 kristaps 217: static enum rofferr roff_so(ROFF_ARGS);
1.164 kristaps 218: static enum rofferr roff_tr(ROFF_ARGS);
1.175 schwarze 219: static enum rofferr roff_Dd(ROFF_ARGS);
1.109 kristaps 220: static enum rofferr roff_TE(ROFF_ARGS);
221: static enum rofferr roff_TS(ROFF_ARGS);
1.125 kristaps 222: static enum rofferr roff_EQ(ROFF_ARGS);
223: static enum rofferr roff_EN(ROFF_ARGS);
1.112 kristaps 224: static enum rofferr roff_T_(ROFF_ARGS);
1.251 schwarze 225: static enum rofferr roff_unsupp(ROFF_ARGS);
1.106 kristaps 226: static enum rofferr roff_userdef(ROFF_ARGS);
1.67 kristaps 227:
1.266 schwarze 228: /* --- constant data ------------------------------------------------------ */
229:
1.261 schwarze 230: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
231: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
232:
1.294 schwarze 233: const char *__roff_name[MAN_MAX + 1] = {
1.305 schwarze 234: "br", "ce", "ft", "ll",
1.312 schwarze 235: "mc", "po", "rj", "sp",
236: "ta", "ti", NULL,
1.294 schwarze 237: "ab", "ad", "af", "aln",
238: "als", "am", "am1", "ami",
239: "ami1", "as", "as1", "asciify",
240: "backtrace", "bd", "bleedat", "blm",
241: "box", "boxa", "bp", "BP",
242: "break", "breakchar", "brnl", "brp",
1.305 schwarze 243: "brpnl", "c2", "cc",
1.294 schwarze 244: "cf", "cflags", "ch", "char",
245: "chop", "class", "close", "CL",
246: "color", "composite", "continue", "cp",
247: "cropat", "cs", "cu", "da",
248: "dch", "Dd", "de", "de1",
249: "defcolor", "dei", "dei1", "device",
250: "devicem", "di", "do", "ds",
251: "ds1", "dwh", "dt", "ec",
252: "ecr", "ecs", "el", "em",
253: "EN", "eo", "EP", "EQ",
254: "errprint", "ev", "evc", "ex",
255: "fallback", "fam", "fc", "fchar",
256: "fcolor", "fdeferlig", "feature", "fkern",
257: "fl", "flig", "fp", "fps",
258: "fschar", "fspacewidth", "fspecial", "ftr",
259: "fzoom", "gcolor", "hc", "hcode",
260: "hidechar", "hla", "hlm", "hpf",
261: "hpfa", "hpfcode", "hw", "hy",
262: "hylang", "hylen", "hym", "hypp",
263: "hys", "ie", "if", "ig",
264: "index", "it", "itc", "IX",
265: "kern", "kernafter", "kernbefore", "kernpair",
266: "lc", "lc_ctype", "lds", "length",
267: "letadj", "lf", "lg", "lhang",
268: "linetabs", "lnr", "lnrf", "lpfx",
1.304 schwarze 269: "ls", "lsm", "lt",
1.294 schwarze 270: "mediasize", "minss", "mk", "mso",
271: "na", "ne", "nh", "nhychar",
272: "nm", "nn", "nop", "nr",
273: "nrf", "nroff", "ns", "nx",
274: "open", "opena", "os", "output",
275: "padj", "papersize", "pc", "pev",
276: "pi", "PI", "pl", "pm",
1.312 schwarze 277: "pn", "pnr", "ps",
1.294 schwarze 278: "psbb", "pshape", "pso", "ptr",
279: "pvs", "rchar", "rd", "recursionlimit",
1.309 schwarze 280: "return", "rfschar", "rhang",
1.294 schwarze 281: "rm", "rn", "rnn", "rr",
282: "rs", "rt", "schar", "sentchar",
283: "shc", "shift", "sizes", "so",
284: "spacewidth", "special", "spreadwarn", "ss",
285: "sty", "substring", "sv", "sy",
1.300 schwarze 286: "T&", "tc", "TE",
1.301 schwarze 287: "TH", "tkf", "tl",
1.294 schwarze 288: "tm", "tm1", "tmc", "tr",
289: "track", "transchar", "trf", "trimat",
290: "trin", "trnt", "troff", "TS",
291: "uf", "ul", "unformat", "unwatch",
292: "unwatchn", "vpt", "vs", "warn",
293: "warnscale", "watch", "watchlength", "watchn",
294: "wh", "while", "write", "writec",
295: "writem", "xflag", ".", NULL,
1.306 schwarze 296: NULL, "text",
1.294 schwarze 297: "Dd", "Dt", "Os", "Sh",
298: "Ss", "Pp", "D1", "Dl",
299: "Bd", "Ed", "Bl", "El",
300: "It", "Ad", "An", "Ap",
301: "Ar", "Cd", "Cm", "Dv",
302: "Er", "Ev", "Ex", "Fa",
303: "Fd", "Fl", "Fn", "Ft",
304: "Ic", "In", "Li", "Nd",
305: "Nm", "Op", "Ot", "Pa",
306: "Rv", "St", "Va", "Vt",
307: "Xr", "%A", "%B", "%D",
308: "%I", "%J", "%N", "%O",
309: "%P", "%R", "%T", "%V",
310: "Ac", "Ao", "Aq", "At",
311: "Bc", "Bf", "Bo", "Bq",
312: "Bsx", "Bx", "Db", "Dc",
313: "Do", "Dq", "Ec", "Ef",
314: "Em", "Eo", "Fx", "Ms",
315: "No", "Ns", "Nx", "Ox",
316: "Pc", "Pf", "Po", "Pq",
317: "Qc", "Ql", "Qo", "Qq",
318: "Re", "Rs", "Sc", "So",
319: "Sq", "Sm", "Sx", "Sy",
320: "Tn", "Ux", "Xc", "Xo",
321: "Fo", "Fc", "Oo", "Oc",
322: "Bk", "Ek", "Bt", "Hf",
323: "Fr", "Ud", "Lb", "Lp",
324: "Lk", "Mt", "Brq", "Bro",
325: "Brc", "%C", "Es", "En",
1.299 schwarze 326: "Dx", "%Q", "%U", "Ta",
327: NULL,
1.294 schwarze 328: "TH", "SH", "SS", "TP",
329: "LP", "PP", "P", "IP",
330: "HP", "SM", "SB", "BI",
331: "IB", "BR", "RB", "R",
332: "B", "I", "IR", "RI",
1.299 schwarze 333: "nf", "fi",
1.294 schwarze 334: "RE", "RS", "DT", "UC",
1.297 schwarze 335: "PD", "AT", "in",
1.294 schwarze 336: "OP", "EX", "EE", "UR",
1.317 schwarze 337: "UE", "MT", "ME", NULL
1.294 schwarze 338: };
339: const char *const *roff_name = __roff_name;
340:
341: static struct roffmac roffs[TOKEN_NONE] = {
1.296 schwarze 342: { roff_br, NULL, NULL, 0 }, /* br */
1.305 schwarze 343: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.297 schwarze 344: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.298 schwarze 345: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.304 schwarze 346: { roff_onearg, NULL, NULL, 0 }, /* mc */
1.312 schwarze 347: { roff_onearg, NULL, NULL, 0 }, /* po */
1.309 schwarze 348: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.299 schwarze 349: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.300 schwarze 350: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.301 schwarze 351: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.296 schwarze 352: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.295 schwarze 353: { roff_unsupp, NULL, NULL, 0 }, /* ab */
354: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
355: { roff_line_ignore, NULL, NULL, 0 }, /* af */
356: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.311 schwarze 357: { roff_als, NULL, NULL, 0 }, /* als */
1.295 schwarze 358: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
359: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
360: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
361: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
362: { roff_ds, NULL, NULL, 0 }, /* as */
363: { roff_ds, NULL, NULL, 0 }, /* as1 */
364: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
365: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
366: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
367: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
368: { roff_unsupp, NULL, NULL, 0 }, /* blm */
369: { roff_unsupp, NULL, NULL, 0 }, /* box */
370: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
371: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
372: { roff_unsupp, NULL, NULL, 0 }, /* BP */
373: { roff_unsupp, NULL, NULL, 0 }, /* break */
374: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
375: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.296 schwarze 376: { roff_br, NULL, NULL, 0 }, /* brp */
1.295 schwarze 377: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
378: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
379: { roff_cc, NULL, NULL, 0 }, /* cc */
380: { roff_insec, NULL, NULL, 0 }, /* cf */
381: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
382: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
383: { roff_unsupp, NULL, NULL, 0 }, /* char */
384: { roff_unsupp, NULL, NULL, 0 }, /* chop */
385: { roff_line_ignore, NULL, NULL, 0 }, /* class */
386: { roff_insec, NULL, NULL, 0 }, /* close */
387: { roff_unsupp, NULL, NULL, 0 }, /* CL */
388: { roff_line_ignore, NULL, NULL, 0 }, /* color */
389: { roff_unsupp, NULL, NULL, 0 }, /* composite */
390: { roff_unsupp, NULL, NULL, 0 }, /* continue */
391: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
392: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
393: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
394: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
395: { roff_unsupp, NULL, NULL, 0 }, /* da */
396: { roff_unsupp, NULL, NULL, 0 }, /* dch */
397: { roff_Dd, NULL, NULL, 0 }, /* Dd */
398: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
399: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
400: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
401: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
402: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
403: { roff_unsupp, NULL, NULL, 0 }, /* device */
404: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
405: { roff_unsupp, NULL, NULL, 0 }, /* di */
406: { roff_unsupp, NULL, NULL, 0 }, /* do */
407: { roff_ds, NULL, NULL, 0 }, /* ds */
408: { roff_ds, NULL, NULL, 0 }, /* ds1 */
409: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
410: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.303 schwarze 411: { roff_ec, NULL, NULL, 0 }, /* ec */
1.295 schwarze 412: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
413: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
414: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
415: { roff_unsupp, NULL, NULL, 0 }, /* em */
416: { roff_EN, NULL, NULL, 0 }, /* EN */
1.303 schwarze 417: { roff_eo, NULL, NULL, 0 }, /* eo */
1.295 schwarze 418: { roff_unsupp, NULL, NULL, 0 }, /* EP */
419: { roff_EQ, NULL, NULL, 0 }, /* EQ */
420: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
421: { roff_unsupp, NULL, NULL, 0 }, /* ev */
422: { roff_unsupp, NULL, NULL, 0 }, /* evc */
423: { roff_unsupp, NULL, NULL, 0 }, /* ex */
424: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
425: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
426: { roff_unsupp, NULL, NULL, 0 }, /* fc */
427: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
428: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
429: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
430: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
431: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
432: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
433: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
434: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
435: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
436: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
437: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
438: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
439: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
440: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
441: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
442: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
443: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
444: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
445: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
446: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
447: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
448: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
449: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
450: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
451: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
452: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
453: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
454: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
455: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
456: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
457: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
458: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
459: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
460: { roff_unsupp, NULL, NULL, 0 }, /* index */
461: { roff_it, NULL, NULL, 0 }, /* it */
462: { roff_unsupp, NULL, NULL, 0 }, /* itc */
463: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
464: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
465: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
466: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
467: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
468: { roff_unsupp, NULL, NULL, 0 }, /* lc */
469: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
470: { roff_unsupp, NULL, NULL, 0 }, /* lds */
471: { roff_unsupp, NULL, NULL, 0 }, /* length */
472: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
473: { roff_insec, NULL, NULL, 0 }, /* lf */
474: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
475: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
476: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
477: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
478: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
479: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
480: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
481: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
482: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
483: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
484: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
485: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
486: { roff_insec, NULL, NULL, 0 }, /* mso */
487: { roff_line_ignore, NULL, NULL, 0 }, /* na */
488: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
489: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
490: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
491: { roff_unsupp, NULL, NULL, 0 }, /* nm */
492: { roff_unsupp, NULL, NULL, 0 }, /* nn */
493: { roff_unsupp, NULL, NULL, 0 }, /* nop */
494: { roff_nr, NULL, NULL, 0 }, /* nr */
495: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
496: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
497: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
498: { roff_insec, NULL, NULL, 0 }, /* nx */
499: { roff_insec, NULL, NULL, 0 }, /* open */
500: { roff_insec, NULL, NULL, 0 }, /* opena */
501: { roff_line_ignore, NULL, NULL, 0 }, /* os */
502: { roff_unsupp, NULL, NULL, 0 }, /* output */
503: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
504: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
505: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
506: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
507: { roff_insec, NULL, NULL, 0 }, /* pi */
508: { roff_unsupp, NULL, NULL, 0 }, /* PI */
509: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
510: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
511: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
512: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
513: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
514: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
515: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
516: { roff_insec, NULL, NULL, 0 }, /* pso */
517: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
518: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
519: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
520: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
521: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
522: { roff_unsupp, NULL, NULL, 0 }, /* return */
523: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
524: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
525: { roff_rm, NULL, NULL, 0 }, /* rm */
1.306 schwarze 526: { roff_rn, NULL, NULL, 0 }, /* rn */
1.295 schwarze 527: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
528: { roff_rr, NULL, NULL, 0 }, /* rr */
529: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
530: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
531: { roff_unsupp, NULL, NULL, 0 }, /* schar */
532: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
533: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
534: { roff_unsupp, NULL, NULL, 0 }, /* shift */
535: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
536: { roff_so, NULL, NULL, 0 }, /* so */
537: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
538: { roff_line_ignore, NULL, NULL, 0 }, /* special */
539: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
540: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
541: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
542: { roff_unsupp, NULL, NULL, 0 }, /* substring */
543: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
544: { roff_insec, NULL, NULL, 0 }, /* sy */
545: { roff_T_, NULL, NULL, 0 }, /* T& */
546: { roff_unsupp, NULL, NULL, 0 }, /* tc */
547: { roff_TE, NULL, NULL, 0 }, /* TE */
1.315 schwarze 548: { roff_Dd, NULL, NULL, 0 }, /* TH */
1.295 schwarze 549: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
550: { roff_unsupp, NULL, NULL, 0 }, /* tl */
551: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
552: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
553: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
554: { roff_tr, NULL, NULL, 0 }, /* tr */
555: { roff_line_ignore, NULL, NULL, 0 }, /* track */
556: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
557: { roff_insec, NULL, NULL, 0 }, /* trf */
558: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
559: { roff_unsupp, NULL, NULL, 0 }, /* trin */
560: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
561: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
562: { roff_TS, NULL, NULL, 0 }, /* TS */
563: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
564: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
565: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
566: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
567: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
568: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
569: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
570: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
571: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
572: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
573: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
574: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
575: { roff_unsupp, NULL, NULL, 0 }, /* wh */
576: { roff_unsupp, NULL, NULL, 0 }, /* while */
577: { roff_insec, NULL, NULL, 0 }, /* write */
578: { roff_insec, NULL, NULL, 0 }, /* writec */
579: { roff_insec, NULL, NULL, 0 }, /* writem */
580: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
581: { roff_cblock, NULL, NULL, 0 }, /* . */
1.306 schwarze 582: { roff_renamed, NULL, NULL, 0 },
1.295 schwarze 583: { roff_userdef, NULL, NULL, 0 }
1.67 kristaps 584: };
585:
1.141 kristaps 586: /* Array of injected predefined strings. */
587: #define PREDEFS_MAX 38
588: static const struct predef predefs[PREDEFS_MAX] = {
589: #include "predefs.in"
590: };
591:
1.305 schwarze 592: static int roffce_lines; /* number of input lines to center */
593: static struct roff_node *roffce_node; /* active request */
1.178 schwarze 594: static int roffit_lines; /* number of lines to delay */
595: static char *roffit_macro; /* nil-terminated macro line */
596:
1.207 schwarze 597:
1.266 schwarze 598: /* --- request table ------------------------------------------------------ */
599:
1.295 schwarze 600: struct ohash *
601: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.85 kristaps 602: {
1.295 schwarze 603: struct ohash *htab;
604: struct roffreq *req;
605: enum roff_tok tok;
606: size_t sz;
607: unsigned int slot;
1.85 kristaps 608:
1.295 schwarze 609: htab = mandoc_malloc(sizeof(*htab));
610: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.85 kristaps 611:
1.295 schwarze 612: for (tok = mintok; tok < maxtok; tok++) {
1.296 schwarze 613: if (roff_name[tok] == NULL)
614: continue;
1.295 schwarze 615: sz = strlen(roff_name[tok]);
616: req = mandoc_malloc(sizeof(*req) + sz + 1);
617: req->tok = tok;
618: memcpy(req->name, roff_name[tok], sz + 1);
619: slot = ohash_qlookup(htab, req->name);
620: ohash_insert(htab, slot, req);
1.85 kristaps 621: }
1.295 schwarze 622: return htab;
1.85 kristaps 623: }
624:
1.295 schwarze 625: void
626: roffhash_free(struct ohash *htab)
1.67 kristaps 627: {
1.295 schwarze 628: struct roffreq *req;
629: unsigned int slot;
1.67 kristaps 630:
1.295 schwarze 631: if (htab == NULL)
632: return;
633: for (req = ohash_first(htab, &slot); req != NULL;
634: req = ohash_next(htab, &slot))
635: free(req);
636: ohash_delete(htab);
637: free(htab);
638: }
639:
640: enum roff_tok
641: roffhash_find(struct ohash *htab, const char *name, size_t sz)
642: {
643: struct roffreq *req;
644: const char *end;
645:
646: if (sz) {
647: end = name + sz;
648: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
649: } else
650: req = ohash_find(htab, ohash_qlookup(htab, name));
651: return req == NULL ? TOKEN_NONE : req->tok;
1.67 kristaps 652: }
653:
1.266 schwarze 654: /* --- stack of request blocks -------------------------------------------- */
655:
1.67 kristaps 656: /*
657: * Pop the current node off of the stack of roff instructions currently
658: * pending.
659: */
660: static void
661: roffnode_pop(struct roff *r)
662: {
663: struct roffnode *p;
664:
1.75 kristaps 665: assert(r->last);
1.207 schwarze 666: p = r->last;
1.82 kristaps 667:
1.75 kristaps 668: r->last = r->last->parent;
1.106 kristaps 669: free(p->name);
670: free(p->end);
1.67 kristaps 671: free(p);
672: }
673:
674: /*
675: * Push a roff node onto the instruction stack. This must later be
676: * removed with roffnode_pop().
677: */
1.98 schwarze 678: static void
1.294 schwarze 679: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.106 kristaps 680: int line, int col)
1.67 kristaps 681: {
682: struct roffnode *p;
683:
1.98 schwarze 684: p = mandoc_calloc(1, sizeof(struct roffnode));
1.67 kristaps 685: p->tok = tok;
1.106 kristaps 686: if (name)
687: p->name = mandoc_strdup(name);
1.67 kristaps 688: p->parent = r->last;
689: p->line = line;
690: p->col = col;
1.198 schwarze 691: p->rule = p->parent ? p->parent->rule : 0;
1.67 kristaps 692:
693: r->last = p;
694: }
695:
1.266 schwarze 696: /* --- roff parser state data management ---------------------------------- */
697:
1.67 kristaps 698: static void
699: roff_free1(struct roff *r)
700: {
1.176 schwarze 701: struct tbl_node *tbl;
1.167 kristaps 702: int i;
1.67 kristaps 703:
1.176 schwarze 704: while (NULL != (tbl = r->first_tbl)) {
705: r->first_tbl = tbl->next;
706: tbl_free(tbl);
1.109 kristaps 707: }
1.113 kristaps 708: r->first_tbl = r->last_tbl = r->tbl = NULL;
709:
1.319 schwarze 710: if (r->last_eqn != NULL)
711: eqn_free(r->last_eqn);
712: r->last_eqn = r->eqn = NULL;
1.125 kristaps 713:
1.67 kristaps 714: while (r->last)
715: roffnode_pop(r);
1.109 kristaps 716:
1.223 schwarze 717: free (r->rstack);
718: r->rstack = NULL;
719: r->rstacksz = 0;
720: r->rstackpos = -1;
721:
722: roff_freereg(r->regtab);
723: r->regtab = NULL;
724:
1.167 kristaps 725: roff_freestr(r->strtab);
1.306 schwarze 726: roff_freestr(r->rentab);
1.167 kristaps 727: roff_freestr(r->xmbtab);
1.306 schwarze 728: r->strtab = r->rentab = r->xmbtab = NULL;
1.167 kristaps 729:
730: if (r->xtab)
731: for (i = 0; i < 128; i++)
732: free(r->xtab[i].p);
733: free(r->xtab);
734: r->xtab = NULL;
1.67 kristaps 735: }
736:
737: void
738: roff_reset(struct roff *r)
739: {
740: roff_free1(r);
1.227 schwarze 741: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.303 schwarze 742: r->control = '\0';
743: r->escape = '\\';
1.307 schwarze 744: roffce_lines = 0;
745: roffce_node = NULL;
746: roffit_lines = 0;
747: roffit_macro = NULL;
1.67 kristaps 748: }
749:
750: void
751: roff_free(struct roff *r)
752: {
753: roff_free1(r);
1.295 schwarze 754: roffhash_free(r->reqtab);
1.67 kristaps 755: free(r);
756: }
757:
758: struct roff *
1.279 schwarze 759: roff_alloc(struct mparse *parse, int options)
1.67 kristaps 760: {
761: struct roff *r;
762:
1.98 schwarze 763: r = mandoc_calloc(1, sizeof(struct roff));
1.128 kristaps 764: r->parse = parse;
1.328 ! schwarze 765: r->reqtab = roffhash_alloc(0, ROFF_RENAMED);
1.199 schwarze 766: r->options = options;
1.227 schwarze 767: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.82 kristaps 768: r->rstackpos = -1;
1.303 schwarze 769: r->escape = '\\';
1.277 schwarze 770: return r;
1.265 schwarze 771: }
772:
1.266 schwarze 773: /* --- syntax tree state data management ---------------------------------- */
774:
1.265 schwarze 775: static void
776: roff_man_free1(struct roff_man *man)
777: {
778:
1.266 schwarze 779: if (man->first != NULL)
780: roff_node_delete(man, man->first);
1.265 schwarze 781: free(man->meta.msec);
782: free(man->meta.vol);
783: free(man->meta.os);
784: free(man->meta.arch);
785: free(man->meta.title);
786: free(man->meta.name);
787: free(man->meta.date);
788: }
789:
790: static void
791: roff_man_alloc1(struct roff_man *man)
792: {
793:
794: memset(&man->meta, 0, sizeof(man->meta));
795: man->first = mandoc_calloc(1, sizeof(*man->first));
796: man->first->type = ROFFT_ROOT;
797: man->last = man->first;
798: man->last_es = NULL;
799: man->flags = 0;
800: man->macroset = MACROSET_NONE;
801: man->lastsec = man->lastnamed = SEC_NONE;
802: man->next = ROFF_NEXT_CHILD;
803: }
804:
805: void
806: roff_man_reset(struct roff_man *man)
807: {
808:
809: roff_man_free1(man);
810: roff_man_alloc1(man);
811: }
812:
813: void
814: roff_man_free(struct roff_man *man)
815: {
816:
817: roff_man_free1(man);
818: free(man);
819: }
820:
821: struct roff_man *
822: roff_man_alloc(struct roff *roff, struct mparse *parse,
1.316 schwarze 823: const char *os_s, int quick)
1.265 schwarze 824: {
825: struct roff_man *man;
826:
827: man = mandoc_calloc(1, sizeof(*man));
828: man->parse = parse;
829: man->roff = roff;
1.316 schwarze 830: man->os_s = os_s;
1.265 schwarze 831: man->quick = quick;
832: roff_man_alloc1(man);
1.296 schwarze 833: roff->man = man;
1.277 schwarze 834: return man;
1.67 kristaps 835: }
836:
1.266 schwarze 837: /* --- syntax tree handling ----------------------------------------------- */
838:
839: struct roff_node *
840: roff_node_alloc(struct roff_man *man, int line, int pos,
841: enum roff_type type, int tok)
842: {
843: struct roff_node *n;
844:
845: n = mandoc_calloc(1, sizeof(*n));
846: n->line = line;
847: n->pos = pos;
848: n->tok = tok;
849: n->type = type;
850: n->sec = man->lastsec;
851:
852: if (man->flags & MDOC_SYNOPSIS)
1.285 schwarze 853: n->flags |= NODE_SYNPRETTY;
1.266 schwarze 854: else
1.285 schwarze 855: n->flags &= ~NODE_SYNPRETTY;
1.266 schwarze 856: if (man->flags & MDOC_NEWLINE)
1.285 schwarze 857: n->flags |= NODE_LINE;
1.266 schwarze 858: man->flags &= ~MDOC_NEWLINE;
859:
1.277 schwarze 860: return n;
1.266 schwarze 861: }
862:
863: void
864: roff_node_append(struct roff_man *man, struct roff_node *n)
865: {
866:
867: switch (man->next) {
868: case ROFF_NEXT_SIBLING:
1.281 schwarze 869: if (man->last->next != NULL) {
870: n->next = man->last->next;
871: man->last->next->prev = n;
872: } else
873: man->last->parent->last = n;
1.266 schwarze 874: man->last->next = n;
875: n->prev = man->last;
876: n->parent = man->last->parent;
877: break;
878: case ROFF_NEXT_CHILD:
1.287 schwarze 879: if (man->last->child != NULL) {
880: n->next = man->last->child;
881: man->last->child->prev = n;
882: } else
883: man->last->last = n;
1.266 schwarze 884: man->last->child = n;
885: n->parent = man->last;
886: break;
887: default:
888: abort();
889: }
1.282 schwarze 890: man->last = n;
1.266 schwarze 891:
892: switch (n->type) {
893: case ROFFT_HEAD:
894: n->parent->head = n;
895: break;
896: case ROFFT_BODY:
1.282 schwarze 897: if (n->end != ENDBODY_NOT)
898: return;
1.266 schwarze 899: n->parent->body = n;
900: break;
901: case ROFFT_TAIL:
902: n->parent->tail = n;
903: break;
904: default:
1.282 schwarze 905: return;
1.266 schwarze 906: }
1.282 schwarze 907:
908: /*
909: * Copy over the normalised-data pointer of our parent. Not
910: * everybody has one, but copying a null pointer is fine.
911: */
912:
913: n->norm = n->parent->norm;
914: assert(n->parent->type == ROFFT_BLOCK);
1.266 schwarze 915: }
916:
1.267 schwarze 917: void
918: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
919: {
920: struct roff_node *n;
921:
922: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
923: n->string = roff_strdup(man->roff, word);
924: roff_node_append(man, n);
1.286 schwarze 925: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 926: man->next = ROFF_NEXT_SIBLING;
927: }
928:
929: void
930: roff_word_append(struct roff_man *man, const char *word)
931: {
932: struct roff_node *n;
933: char *addstr, *newstr;
934:
935: n = man->last;
936: addstr = roff_strdup(man->roff, word);
937: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
938: free(addstr);
939: free(n->string);
940: n->string = newstr;
941: man->next = ROFF_NEXT_SIBLING;
1.268 schwarze 942: }
943:
944: void
945: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
946: {
947: struct roff_node *n;
948:
949: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
950: roff_node_append(man, n);
951: man->next = ROFF_NEXT_CHILD;
952: }
953:
954: struct roff_node *
955: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
956: {
957: struct roff_node *n;
958:
959: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
960: roff_node_append(man, n);
961: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 962: return n;
1.267 schwarze 963: }
964:
1.266 schwarze 965: struct roff_node *
966: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
967: {
968: struct roff_node *n;
969:
970: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
971: roff_node_append(man, n);
972: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 973: return n;
1.266 schwarze 974: }
975:
976: struct roff_node *
977: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
978: {
979: struct roff_node *n;
980:
981: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
982: roff_node_append(man, n);
983: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 984: return n;
1.267 schwarze 985: }
986:
1.321 schwarze 987: static void
988: roff_addtbl(struct roff_man *man, struct tbl_node *tbl)
1.267 schwarze 989: {
990: struct roff_node *n;
1.321 schwarze 991: const struct tbl_span *span;
1.267 schwarze 992:
993: if (man->macroset == MACROSET_MAN)
1.302 schwarze 994: man_breakscope(man, ROFF_TS);
1.321 schwarze 995: while ((span = tbl_span(tbl)) != NULL) {
996: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
997: n->span = span;
998: roff_node_append(man, n);
999: n->flags |= NODE_VALID | NODE_ENDED;
1000: man->next = ROFF_NEXT_SIBLING;
1001: }
1.266 schwarze 1002: }
1003:
1004: void
1005: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1006: {
1007:
1008: /* Adjust siblings. */
1009:
1010: if (n->prev)
1011: n->prev->next = n->next;
1012: if (n->next)
1013: n->next->prev = n->prev;
1014:
1015: /* Adjust parent. */
1016:
1017: if (n->parent != NULL) {
1018: if (n->parent->child == n)
1019: n->parent->child = n->next;
1020: if (n->parent->last == n)
1021: n->parent->last = n->prev;
1022: }
1023:
1024: /* Adjust parse point. */
1025:
1026: if (man == NULL)
1027: return;
1028: if (man->last == n) {
1029: if (n->prev == NULL) {
1030: man->last = n->parent;
1031: man->next = ROFF_NEXT_CHILD;
1032: } else {
1033: man->last = n->prev;
1034: man->next = ROFF_NEXT_SIBLING;
1035: }
1036: }
1037: if (man->first == n)
1038: man->first = NULL;
1039: }
1040:
1041: void
1042: roff_node_free(struct roff_node *n)
1043: {
1044:
1045: if (n->args != NULL)
1046: mdoc_argv_free(n->args);
1047: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1048: free(n->norm);
1.319 schwarze 1049: if (n->eqn != NULL)
1050: eqn_box_free(n->eqn);
1.266 schwarze 1051: free(n->string);
1052: free(n);
1053: }
1054:
1055: void
1056: roff_node_delete(struct roff_man *man, struct roff_node *n)
1057: {
1058:
1059: while (n->child != NULL)
1060: roff_node_delete(man, n->child);
1061: roff_node_unlink(man, n);
1062: roff_node_free(n);
1.269 schwarze 1063: }
1064:
1065: void
1066: deroff(char **dest, const struct roff_node *n)
1067: {
1068: char *cp;
1069: size_t sz;
1070:
1071: if (n->type != ROFFT_TEXT) {
1072: for (n = n->child; n != NULL; n = n->next)
1073: deroff(dest, n);
1074: return;
1075: }
1076:
1.288 schwarze 1077: /* Skip leading whitespace. */
1.269 schwarze 1078:
1.288 schwarze 1079: for (cp = n->string; *cp != '\0'; cp++) {
1.289 schwarze 1080: if (cp[0] == '\\' && cp[1] != '\0' &&
1081: strchr(" %&0^|~", cp[1]) != NULL)
1.269 schwarze 1082: cp++;
1.288 schwarze 1083: else if ( ! isspace((unsigned char)*cp))
1.269 schwarze 1084: break;
1085: }
1086:
1.289 schwarze 1087: /* Skip trailing backslash. */
1088:
1089: sz = strlen(cp);
1.290 schwarze 1090: if (sz > 0 && cp[sz - 1] == '\\')
1.289 schwarze 1091: sz--;
1092:
1.269 schwarze 1093: /* Skip trailing whitespace. */
1094:
1.289 schwarze 1095: for (; sz; sz--)
1.269 schwarze 1096: if ( ! isspace((unsigned char)cp[sz-1]))
1097: break;
1098:
1099: /* Skip empty strings. */
1100:
1101: if (sz == 0)
1102: return;
1103:
1104: if (*dest == NULL) {
1105: *dest = mandoc_strndup(cp, sz);
1106: return;
1107: }
1108:
1109: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1110: free(*dest);
1111: *dest = cp;
1.266 schwarze 1112: }
1113:
1114: /* --- main functions of the roff parser ---------------------------------- */
1115:
1.94 kristaps 1116: /*
1.206 schwarze 1117: * In the current line, expand escape sequences that tend to get
1118: * used in numerical expressions and conditional requests.
1119: * Also check the syntax of the remaining escape sequences.
1.154 kristaps 1120: */
1.172 schwarze 1121: static enum rofferr
1.238 schwarze 1122: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.94 kristaps 1123: {
1.208 schwarze 1124: char ubuf[24]; /* buffer to print the number */
1.328 ! schwarze 1125: struct roff_node *n; /* used for header comments */
1.205 schwarze 1126: const char *start; /* start of the string to process */
1.209 schwarze 1127: char *stesc; /* start of an escape sequence ('\\') */
1.328 ! schwarze 1128: char *ep; /* end of comment string */
1.108 schwarze 1129: const char *stnam; /* start of the name, after "[(*" */
1130: const char *cp; /* end of the name, e.g. before ']' */
1131: const char *res; /* the string to be substituted */
1.238 schwarze 1132: char *nbuf; /* new buffer to copy buf->buf to */
1.181 schwarze 1133: size_t maxl; /* expected length of the escape name */
1134: size_t naml; /* actual length of the escape name */
1.237 schwarze 1135: enum mandoc_esc esc; /* type of the escape sequence */
1136: int inaml; /* length returned from mandoc_escape() */
1.181 schwarze 1137: int expand_count; /* to avoid infinite loops */
1.206 schwarze 1138: int npos; /* position in numeric expression */
1.218 schwarze 1139: int arg_complete; /* argument not interrupted by eol */
1.303 schwarze 1140: int done; /* no more input available */
1.315 schwarze 1141: int deftype; /* type of definition to paste */
1.323 schwarze 1142: int rcsid; /* kind of RCS id seen */
1.327 schwarze 1143: char sign; /* increment number register */
1.206 schwarze 1144: char term; /* character terminating the escape */
1.94 kristaps 1145:
1.303 schwarze 1146: /* Search forward for comments. */
1147:
1148: done = 0;
1149: start = buf->buf + pos;
1150: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1151: if (stesc[0] != r->escape || stesc[1] == '\0')
1152: continue;
1153: stesc++;
1154: if (*stesc != '"' && *stesc != '#')
1155: continue;
1.313 schwarze 1156:
1157: /* Comment found, look for RCS id. */
1158:
1.323 schwarze 1159: rcsid = 0;
1.313 schwarze 1160: if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
1.323 schwarze 1161: rcsid = 1 << MANDOC_OS_OPENBSD;
1.313 schwarze 1162: cp += 8;
1163: } else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
1.323 schwarze 1164: rcsid = 1 << MANDOC_OS_NETBSD;
1.313 schwarze 1165: cp += 7;
1166: }
1167: if (cp != NULL &&
1168: isalnum((unsigned char)*cp) == 0 &&
1.314 schwarze 1169: strchr(cp, '$') != NULL) {
1.323 schwarze 1170: if (r->man->meta.rcsids & rcsid)
1.314 schwarze 1171: mandoc_msg(MANDOCERR_RCS_REP, r->parse,
1172: ln, stesc + 1 - buf->buf, stesc + 1);
1.323 schwarze 1173: r->man->meta.rcsids |= rcsid;
1.314 schwarze 1174: }
1.313 schwarze 1175:
1176: /* Handle trailing whitespace. */
1177:
1.328 ! schwarze 1178: ep = strchr(stesc--, '\0') - 1;
! 1179: if (*ep == '\n') {
1.303 schwarze 1180: done = 1;
1.328 ! schwarze 1181: ep--;
1.303 schwarze 1182: }
1.328 ! schwarze 1183: if (*ep == ' ' || *ep == '\t')
1.303 schwarze 1184: mandoc_msg(MANDOCERR_SPACE_EOL, r->parse,
1.328 ! schwarze 1185: ln, ep - buf->buf, NULL);
! 1186:
! 1187: /*
! 1188: * Save comments preceding the title macro
! 1189: * in the syntax tree.
! 1190: */
! 1191:
! 1192: if (r->format == 0) {
! 1193: while (*ep == ' ' || *ep == '\t')
! 1194: ep--;
! 1195: ep[1] = '\0';
! 1196: n = roff_node_alloc(r->man,
! 1197: ln, stesc + 1 - buf->buf,
! 1198: ROFFT_COMMENT, TOKEN_NONE);
! 1199: n->string = mandoc_strdup(stesc + 2);
! 1200: roff_node_append(r->man, n);
! 1201: n->flags |= NODE_VALID | NODE_ENDED;
! 1202: r->man->next = ROFF_NEXT_SIBLING;
! 1203: }
! 1204:
! 1205: /* Discard comments. */
! 1206:
1.303 schwarze 1207: while (stesc > start && stesc[-1] == ' ')
1208: stesc--;
1209: *stesc = '\0';
1210: break;
1211: }
1212: if (stesc == start)
1213: return ROFF_CONT;
1214: stesc--;
1215:
1216: /* Notice the end of the input. */
1217:
1218: if (*stesc == '\n') {
1219: *stesc-- = '\0';
1220: done = 1;
1221: }
1222:
1.170 schwarze 1223: expand_count = 0;
1.303 schwarze 1224: while (stesc >= start) {
1.170 schwarze 1225:
1.205 schwarze 1226: /* Search backwards for the next backslash. */
1227:
1.303 schwarze 1228: if (*stesc != r->escape) {
1229: if (*stesc == '\\') {
1230: *stesc = '\0';
1231: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1232: buf->buf, stesc + 1) + 1;
1233: start = nbuf + pos;
1234: stesc = nbuf + (stesc - buf->buf);
1235: free(buf->buf);
1236: buf->buf = nbuf;
1237: }
1238: stesc--;
1.205 schwarze 1239: continue;
1.303 schwarze 1240: }
1.205 schwarze 1241:
1242: /* If it is escaped, skip it. */
1243:
1244: for (cp = stesc - 1; cp >= start; cp--)
1.303 schwarze 1245: if (*cp != r->escape)
1.205 schwarze 1246: break;
1247:
1.238 schwarze 1248: if ((stesc - cp) % 2 == 0) {
1.303 schwarze 1249: while (stesc > cp)
1250: *stesc-- = '\\';
1.205 schwarze 1251: continue;
1.303 schwarze 1252: } else if (stesc[1] != '\0') {
1253: *stesc = '\\';
1254: } else {
1255: *stesc-- = '\0';
1256: if (done)
1257: continue;
1258: else
1259: return ROFF_APPEND;
1.205 schwarze 1260: }
1.108 schwarze 1261:
1.206 schwarze 1262: /* Decide whether to expand or to check only. */
1.108 schwarze 1263:
1.206 schwarze 1264: term = '\0';
1.205 schwarze 1265: cp = stesc + 1;
1.181 schwarze 1266: switch (*cp) {
1.207 schwarze 1267: case '*':
1.181 schwarze 1268: res = NULL;
1269: break;
1.207 schwarze 1270: case 'B':
1271: case 'w':
1.206 schwarze 1272: term = cp[1];
1273: /* FALLTHROUGH */
1.207 schwarze 1274: case 'n':
1.327 schwarze 1275: sign = cp[1];
1276: if (sign == '+' || sign == '-')
1277: cp++;
1.181 schwarze 1278: res = ubuf;
1279: break;
1280: default:
1.237 schwarze 1281: esc = mandoc_escape(&cp, &stnam, &inaml);
1282: if (esc == ESCAPE_ERROR ||
1283: (esc == ESCAPE_SPECIAL &&
1.279 schwarze 1284: mchars_spec2cp(stnam, inaml) < 0))
1.219 schwarze 1285: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.238 schwarze 1286: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1287: "%.*s", (int)(cp - stesc), stesc);
1.303 schwarze 1288: stesc--;
1.205 schwarze 1289: continue;
1.152 kristaps 1290: }
1291:
1.205 schwarze 1292: if (EXPAND_LIMIT < ++expand_count) {
1293: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.238 schwarze 1294: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1295: return ROFF_IGN;
1.205 schwarze 1296: }
1.108 schwarze 1297:
1298: /*
1299: * The third character decides the length
1.181 schwarze 1300: * of the name of the string or register.
1.108 schwarze 1301: * Save a pointer to the name.
1302: */
1303:
1.238 schwarze 1304: if (term == '\0') {
1.206 schwarze 1305: switch (*++cp) {
1.207 schwarze 1306: case '\0':
1.206 schwarze 1307: maxl = 0;
1308: break;
1.207 schwarze 1309: case '(':
1.206 schwarze 1310: cp++;
1311: maxl = 2;
1312: break;
1.207 schwarze 1313: case '[':
1.206 schwarze 1314: cp++;
1315: term = ']';
1316: maxl = 0;
1317: break;
1318: default:
1319: maxl = 1;
1320: break;
1321: }
1322: } else {
1323: cp += 2;
1.94 kristaps 1324: maxl = 0;
1325: }
1.108 schwarze 1326: stnam = cp;
1.94 kristaps 1327:
1.108 schwarze 1328: /* Advance to the end of the name. */
1.94 kristaps 1329:
1.253 schwarze 1330: naml = 0;
1.218 schwarze 1331: arg_complete = 1;
1.253 schwarze 1332: while (maxl == 0 || naml < maxl) {
1.238 schwarze 1333: if (*cp == '\0') {
1.219 schwarze 1334: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 1335: ln, (int)(stesc - buf->buf), stesc);
1.218 schwarze 1336: arg_complete = 0;
1.206 schwarze 1337: break;
1.153 kristaps 1338: }
1.238 schwarze 1339: if (maxl == 0 && *cp == term) {
1.206 schwarze 1340: cp++;
1.253 schwarze 1341: break;
1342: }
1343: if (*cp++ != '\\' || stesc[1] != 'w') {
1344: naml++;
1345: continue;
1346: }
1347: switch (mandoc_escape(&cp, NULL, NULL)) {
1348: case ESCAPE_SPECIAL:
1349: case ESCAPE_UNICODE:
1350: case ESCAPE_NUMBERED:
1351: case ESCAPE_OVERSTRIKE:
1352: naml++;
1353: break;
1354: default:
1.94 kristaps 1355: break;
1.206 schwarze 1356: }
1.94 kristaps 1357: }
1358:
1.108 schwarze 1359: /*
1360: * Retrieve the replacement string; if it is
1361: * undefined, resume searching for escapes.
1362: */
1363:
1.206 schwarze 1364: switch (stesc[1]) {
1.207 schwarze 1365: case '*':
1.315 schwarze 1366: if (arg_complete) {
1367: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1368: res = roff_getstrn(r, stnam, naml, &deftype);
1369: }
1.206 schwarze 1370: break;
1.207 schwarze 1371: case 'B':
1.206 schwarze 1372: npos = 0;
1.218 schwarze 1373: ubuf[0] = arg_complete &&
1.261 schwarze 1374: roff_evalnum(r, ln, stnam, &npos,
1375: NULL, ROFFNUM_SCALE) &&
1.218 schwarze 1376: stnam + npos + 1 == cp ? '1' : '0';
1.206 schwarze 1377: ubuf[1] = '\0';
1378: break;
1.207 schwarze 1379: case 'n':
1.218 schwarze 1380: if (arg_complete)
1381: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.327 schwarze 1382: roff_getregn(r, stnam, naml, sign));
1.218 schwarze 1383: else
1384: ubuf[0] = '\0';
1.206 schwarze 1385: break;
1.207 schwarze 1386: case 'w':
1.218 schwarze 1387: /* use even incomplete args */
1.208 schwarze 1388: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.206 schwarze 1389: 24 * (int)naml);
1390: break;
1391: }
1.94 kristaps 1392:
1.238 schwarze 1393: if (res == NULL) {
1.219 schwarze 1394: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1395: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1396: "%.*s", (int)naml, stnam);
1.142 kristaps 1397: res = "";
1.246 schwarze 1398: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1399: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1400: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1401: return ROFF_IGN;
1.94 kristaps 1402: }
1403:
1.108 schwarze 1404: /* Replace the escape sequence by the string. */
1405:
1.209 schwarze 1406: *stesc = '\0';
1.238 schwarze 1407: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1408: buf->buf, res, cp) + 1;
1.94 kristaps 1409:
1.205 schwarze 1410: /* Prepare for the next replacement. */
1.94 kristaps 1411:
1.205 schwarze 1412: start = nbuf + pos;
1.238 schwarze 1413: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1414: free(buf->buf);
1415: buf->buf = nbuf;
1.154 kristaps 1416: }
1.277 schwarze 1417: return ROFF_CONT;
1.154 kristaps 1418: }
1419:
1420: /*
1.275 schwarze 1421: * Process text streams.
1.154 kristaps 1422: */
1423: static enum rofferr
1.305 schwarze 1424: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.154 kristaps 1425: {
1426: size_t sz;
1427: const char *start;
1.178 schwarze 1428: char *p;
1429: int isz;
1.154 kristaps 1430: enum mandoc_esc esc;
1431:
1.275 schwarze 1432: /* Spring the input line trap. */
1433:
1434: if (roffit_lines == 1) {
1435: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1436: free(buf->buf);
1437: buf->buf = p;
1438: buf->sz = isz + 1;
1439: *offs = 0;
1440: free(roffit_macro);
1441: roffit_lines = 0;
1.277 schwarze 1442: return ROFF_REPARSE;
1.275 schwarze 1443: } else if (roffit_lines > 1)
1444: --roffit_lines;
1445:
1.305 schwarze 1446: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1447: if (roffce_lines < 1) {
1448: r->man->last = roffce_node;
1449: r->man->next = ROFF_NEXT_SIBLING;
1450: roffce_lines = 0;
1451: roffce_node = NULL;
1452: } else
1453: roffce_lines--;
1454: }
1455:
1.275 schwarze 1456: /* Convert all breakable hyphens into ASCII_HYPH. */
1457:
1.238 schwarze 1458: start = p = buf->buf + pos;
1.154 kristaps 1459:
1.238 schwarze 1460: while (*p != '\0') {
1.154 kristaps 1461: sz = strcspn(p, "-\\");
1462: p += sz;
1463:
1.238 schwarze 1464: if (*p == '\0')
1.159 kristaps 1465: break;
1466:
1.238 schwarze 1467: if (*p == '\\') {
1.154 kristaps 1468: /* Skip over escapes. */
1469: p++;
1.189 schwarze 1470: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.238 schwarze 1471: if (esc == ESCAPE_ERROR)
1.154 kristaps 1472: break;
1.264 schwarze 1473: while (*p == '-')
1474: p++;
1.155 kristaps 1475: continue;
1.159 kristaps 1476: } else if (p == start) {
1.158 kristaps 1477: p++;
1.155 kristaps 1478: continue;
1.158 kristaps 1479: }
1.155 kristaps 1480:
1.171 schwarze 1481: if (isalpha((unsigned char)p[-1]) &&
1482: isalpha((unsigned char)p[1]))
1.155 kristaps 1483: *p = ASCII_HYPH;
1484: p++;
1.94 kristaps 1485: }
1.277 schwarze 1486: return ROFF_CONT;
1.94 kristaps 1487: }
1488:
1.67 kristaps 1489: enum rofferr
1.238 schwarze 1490: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.67 kristaps 1491: {
1.294 schwarze 1492: enum roff_tok t;
1.109 kristaps 1493: enum rofferr e;
1.238 schwarze 1494: int pos; /* parse point */
1.243 schwarze 1495: int spos; /* saved parse point for messages */
1.238 schwarze 1496: int ppos; /* original offset in buf->buf */
1497: int ctl; /* macro line (boolean) */
1498:
1499: ppos = pos = *offs;
1.79 kristaps 1500:
1.230 schwarze 1501: /* Handle in-line equation delimiters. */
1502:
1.236 schwarze 1503: if (r->tbl == NULL &&
1504: r->last_eqn != NULL && r->last_eqn->delim &&
1.230 schwarze 1505: (r->eqn == NULL || r->eqn_inline)) {
1.238 schwarze 1506: e = roff_eqndelim(r, buf, pos);
1.230 schwarze 1507: if (e == ROFF_REPARSE)
1.277 schwarze 1508: return e;
1.230 schwarze 1509: assert(e == ROFF_CONT);
1510: }
1511:
1512: /* Expand some escape sequences. */
1.94 kristaps 1513:
1.238 schwarze 1514: e = roff_res(r, buf, ln, pos);
1.303 schwarze 1515: if (e == ROFF_IGN || e == ROFF_APPEND)
1.277 schwarze 1516: return e;
1.238 schwarze 1517: assert(e == ROFF_CONT);
1.94 kristaps 1518:
1.238 schwarze 1519: ctl = roff_getcontrol(r, buf->buf, &pos);
1.130 kristaps 1520:
1.94 kristaps 1521: /*
1.79 kristaps 1522: * First, if a scope is open and we're not a macro, pass the
1.252 schwarze 1523: * text through the macro's filter.
1524: * Equations process all content themselves.
1525: * Tables process almost all content themselves, but we want
1526: * to warn about macros before passing it there.
1.79 kristaps 1527: */
1.74 kristaps 1528:
1.252 schwarze 1529: if (r->last != NULL && ! ctl) {
1.78 kristaps 1530: t = r->last->tok;
1.238 schwarze 1531: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.294 schwarze 1532: if (e == ROFF_IGN)
1.277 schwarze 1533: return e;
1.294 schwarze 1534: assert(e == ROFF_CONT);
1.182 schwarze 1535: }
1.319 schwarze 1536: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1537: eqn_read(r->eqn, buf->buf + ppos);
1538: return ROFF_IGN;
1539: }
1.321 schwarze 1540: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1541: tbl_read(r->tbl, ln, buf->buf, ppos);
1542: roff_addtbl(r->man, r->tbl);
1543: return ROFF_IGN;
1544: }
1.252 schwarze 1545: if ( ! ctl)
1.305 schwarze 1546: return roff_parsetext(r, buf, pos, offs);
1.228 schwarze 1547:
1548: /* Skip empty request lines. */
1549:
1.238 schwarze 1550: if (buf->buf[pos] == '"') {
1.228 schwarze 1551: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1552: ln, pos, NULL);
1.277 schwarze 1553: return ROFF_IGN;
1.238 schwarze 1554: } else if (buf->buf[pos] == '\0')
1.277 schwarze 1555: return ROFF_IGN;
1.67 kristaps 1556:
1.79 kristaps 1557: /*
1558: * If a scope is open, go to the child handler for that macro,
1559: * as it may want to preprocess before doing anything with it.
1.125 kristaps 1560: * Don't do so if an equation is open.
1.79 kristaps 1561: */
1.78 kristaps 1562:
1.79 kristaps 1563: if (r->last) {
1564: t = r->last->tok;
1.277 schwarze 1565: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1566: }
1.78 kristaps 1567:
1.243 schwarze 1568: /* No scope is open. This is a new request or macro. */
1569:
1570: spos = pos;
1571: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1572:
1573: /* Tables ignore most macros. */
1574:
1.308 schwarze 1575: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.309 schwarze 1576: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.243 schwarze 1577: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1578: ln, pos, buf->buf + spos);
1.308 schwarze 1579: if (t != TOKEN_NONE)
1.277 schwarze 1580: return ROFF_IGN;
1.257 schwarze 1581: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1582: pos++;
1.291 schwarze 1583: while (buf->buf[pos] == ' ')
1.257 schwarze 1584: pos++;
1.321 schwarze 1585: tbl_read(r->tbl, ln, buf->buf, pos);
1586: roff_addtbl(r->man, r->tbl);
1587: return ROFF_IGN;
1.243 schwarze 1588: }
1589:
1.305 schwarze 1590: /* For now, let high level macros abort .ce mode. */
1591:
1592: if (ctl && roffce_node != NULL &&
1.324 schwarze 1593: (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
1594: t == ROFF_TH || t == ROFF_TS)) {
1.305 schwarze 1595: r->man->last = roffce_node;
1596: r->man->next = ROFF_NEXT_SIBLING;
1597: roffce_lines = 0;
1598: roffce_node = NULL;
1599: }
1600:
1.79 kristaps 1601: /*
1.243 schwarze 1602: * This is neither a roff request nor a user-defined macro.
1603: * Let the standard macro set parsers handle it.
1.79 kristaps 1604: */
1.67 kristaps 1605:
1.294 schwarze 1606: if (t == TOKEN_NONE)
1.277 schwarze 1607: return ROFF_CONT;
1.243 schwarze 1608:
1609: /* Execute a roff request or a user defined macro. */
1.67 kristaps 1610:
1.296 schwarze 1611: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.74 kristaps 1612: }
1613:
1.117 kristaps 1614: void
1.74 kristaps 1615: roff_endparse(struct roff *r)
1616: {
1.321 schwarze 1617: if (r->last != NULL)
1.221 schwarze 1618: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1619: r->last->line, r->last->col,
1.295 schwarze 1620: roff_name[r->last->tok]);
1.117 kristaps 1621:
1.321 schwarze 1622: if (r->eqn != NULL) {
1.221 schwarze 1623: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1.319 schwarze 1624: r->eqn->node->line, r->eqn->node->pos, "EQ");
1625: eqn_parse(r->eqn);
1626: r->eqn = NULL;
1.125 kristaps 1627: }
1628:
1.321 schwarze 1629: if (r->tbl != NULL) {
1.221 schwarze 1630: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1631: r->tbl->line, r->tbl->pos, "TS");
1.321 schwarze 1632: tbl_end(r->tbl);
1633: r->tbl = NULL;
1.117 kristaps 1634: }
1.67 kristaps 1635: }
1636:
1637: /*
1638: * Parse a roff node's type from the input buffer. This must be in the
1639: * form of ".foo xxx" in the usual way.
1640: */
1.294 schwarze 1641: static enum roff_tok
1.214 schwarze 1642: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.67 kristaps 1643: {
1.214 schwarze 1644: char *cp;
1.106 kristaps 1645: const char *mac;
1646: size_t maclen;
1.315 schwarze 1647: int deftype;
1.294 schwarze 1648: enum roff_tok t;
1.67 kristaps 1649:
1.214 schwarze 1650: cp = buf + *pos;
1651:
1652: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.294 schwarze 1653: return TOKEN_NONE;
1.67 kristaps 1654:
1.214 schwarze 1655: mac = cp;
1656: maclen = roff_getname(r, &cp, ln, ppos);
1.67 kristaps 1657:
1.315 schwarze 1658: deftype = ROFFDEF_USER | ROFFDEF_REN;
1659: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
1660: switch (deftype) {
1661: case ROFFDEF_USER:
1662: t = ROFF_USERDEF;
1663: break;
1664: case ROFFDEF_REN:
1665: t = ROFF_RENAMED;
1666: break;
1667: default:
1668: t = roffhash_find(r->reqtab, mac, maclen);
1669: break;
1670: }
1.294 schwarze 1671: if (t != TOKEN_NONE)
1.214 schwarze 1672: *pos = cp - buf;
1.325 schwarze 1673: else if (deftype == ROFFDEF_UNDEF) {
1674: /* Using an undefined macro defines it to be empty. */
1675: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
1676: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
1677: }
1.277 schwarze 1678: return t;
1.67 kristaps 1679: }
1680:
1.266 schwarze 1681: /* --- handling of request blocks ----------------------------------------- */
1682:
1.67 kristaps 1683: static enum rofferr
1.76 kristaps 1684: roff_cblock(ROFF_ARGS)
1.67 kristaps 1685: {
1686:
1.79 kristaps 1687: /*
1688: * A block-close `..' should only be invoked as a child of an
1689: * ignore macro, otherwise raise a warning and just ignore it.
1690: */
1691:
1.238 schwarze 1692: if (r->last == NULL) {
1.221 schwarze 1693: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1694: ln, ppos, "..");
1.277 schwarze 1695: return ROFF_IGN;
1.76 kristaps 1696: }
1.67 kristaps 1697:
1.81 kristaps 1698: switch (r->last->tok) {
1.207 schwarze 1699: case ROFF_am:
1.220 schwarze 1700: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.207 schwarze 1701: case ROFF_ami:
1702: case ROFF_de:
1.108 schwarze 1703: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.207 schwarze 1704: case ROFF_dei:
1705: case ROFF_ig:
1.81 kristaps 1706: break;
1707: default:
1.221 schwarze 1708: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1709: ln, ppos, "..");
1.277 schwarze 1710: return ROFF_IGN;
1.76 kristaps 1711: }
1.67 kristaps 1712:
1.238 schwarze 1713: if (buf->buf[pos] != '\0')
1.217 schwarze 1714: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 1715: ".. %s", buf->buf + pos);
1.71 kristaps 1716:
1717: roffnode_pop(r);
1.76 kristaps 1718: roffnode_cleanscope(r);
1.277 schwarze 1719: return ROFF_IGN;
1.71 kristaps 1720:
1.67 kristaps 1721: }
1722:
1.76 kristaps 1723: static void
1724: roffnode_cleanscope(struct roff *r)
1.67 kristaps 1725: {
1726:
1.76 kristaps 1727: while (r->last) {
1.173 schwarze 1728: if (--r->last->endspan != 0)
1.76 kristaps 1729: break;
1730: roffnode_pop(r);
1731: }
1.67 kristaps 1732: }
1733:
1.195 schwarze 1734: static void
1735: roff_ccond(struct roff *r, int ln, int ppos)
1.74 kristaps 1736: {
1737:
1.76 kristaps 1738: if (NULL == r->last) {
1.221 schwarze 1739: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1740: ln, ppos, "\\}");
1.195 schwarze 1741: return;
1.76 kristaps 1742: }
1743:
1.82 kristaps 1744: switch (r->last->tok) {
1.207 schwarze 1745: case ROFF_el:
1746: case ROFF_ie:
1747: case ROFF_if:
1.82 kristaps 1748: break;
1749: default:
1.221 schwarze 1750: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1751: ln, ppos, "\\}");
1.195 schwarze 1752: return;
1.75 kristaps 1753: }
1754:
1.76 kristaps 1755: if (r->last->endspan > -1) {
1.221 schwarze 1756: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1757: ln, ppos, "\\}");
1.195 schwarze 1758: return;
1.76 kristaps 1759: }
1760:
1.75 kristaps 1761: roffnode_pop(r);
1.76 kristaps 1762: roffnode_cleanscope(r);
1.195 schwarze 1763: return;
1.76 kristaps 1764: }
1765:
1766: static enum rofferr
1.80 kristaps 1767: roff_block(ROFF_ARGS)
1.76 kristaps 1768: {
1.315 schwarze 1769: const char *name, *value;
1770: char *call, *cp, *iname, *rname;
1771: size_t csz, namesz, rsz;
1772: int deftype;
1.106 kristaps 1773:
1.220 schwarze 1774: /* Ignore groff compatibility mode for now. */
1.76 kristaps 1775:
1.238 schwarze 1776: if (tok == ROFF_de1)
1.220 schwarze 1777: tok = ROFF_de;
1.251 schwarze 1778: else if (tok == ROFF_dei1)
1779: tok = ROFF_dei;
1.238 schwarze 1780: else if (tok == ROFF_am1)
1.220 schwarze 1781: tok = ROFF_am;
1.251 schwarze 1782: else if (tok == ROFF_ami1)
1783: tok = ROFF_ami;
1.220 schwarze 1784:
1785: /* Parse the macro name argument. */
1786:
1.238 schwarze 1787: cp = buf->buf + pos;
1788: if (tok == ROFF_ig) {
1.220 schwarze 1789: iname = NULL;
1790: namesz = 0;
1791: } else {
1792: iname = cp;
1793: namesz = roff_getname(r, &cp, ln, ppos);
1794: iname[namesz] = '\0';
1795: }
1.107 kristaps 1796:
1.220 schwarze 1797: /* Resolve the macro name argument if it is indirect. */
1.107 kristaps 1798:
1.238 schwarze 1799: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 1800: deftype = ROFFDEF_USER;
1801: name = roff_getstrn(r, iname, namesz, &deftype);
1802: if (name == NULL) {
1.220 schwarze 1803: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1804: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1805: "%.*s", (int)namesz, iname);
1806: namesz = 0;
1807: } else
1808: namesz = strlen(name);
1809: } else
1810: name = iname;
1.107 kristaps 1811:
1.238 schwarze 1812: if (namesz == 0 && tok != ROFF_ig) {
1.220 schwarze 1813: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1.295 schwarze 1814: ln, ppos, roff_name[tok]);
1.277 schwarze 1815: return ROFF_IGN;
1.220 schwarze 1816: }
1.80 kristaps 1817:
1.106 kristaps 1818: roffnode_push(r, tok, name, ln, ppos);
1819:
1820: /*
1821: * At the beginning of a `de' macro, clear the existing string
1822: * with the same name, if there is one. New content will be
1.193 schwarze 1823: * appended from roff_block_text() in multiline mode.
1.106 kristaps 1824: */
1.107 kristaps 1825:
1.311 schwarze 1826: if (tok == ROFF_de || tok == ROFF_dei) {
1.213 schwarze 1827: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.311 schwarze 1828: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.315 schwarze 1829: } else if (tok == ROFF_am || tok == ROFF_ami) {
1830: deftype = ROFFDEF_ANY;
1831: value = roff_getstrn(r, iname, namesz, &deftype);
1832: switch (deftype) { /* Before appending, ... */
1833: case ROFFDEF_PRE: /* copy predefined to user-defined. */
1834: roff_setstrn(&r->strtab, name, namesz,
1835: value, strlen(value), 0);
1836: break;
1837: case ROFFDEF_REN: /* call original standard macro. */
1838: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1839: (int)strlen(value), value);
1840: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1841: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1842: free(call);
1843: break;
1844: case ROFFDEF_STD: /* rename and call standard macro. */
1845: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
1846: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
1847: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1848: (int)rsz, rname);
1849: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1850: free(call);
1851: free(rname);
1852: break;
1853: default:
1854: break;
1855: }
1.311 schwarze 1856: }
1.76 kristaps 1857:
1.238 schwarze 1858: if (*cp == '\0')
1.277 schwarze 1859: return ROFF_IGN;
1.78 kristaps 1860:
1.220 schwarze 1861: /* Get the custom end marker. */
1.107 kristaps 1862:
1.220 schwarze 1863: iname = cp;
1.213 schwarze 1864: namesz = roff_getname(r, &cp, ln, ppos);
1.220 schwarze 1865:
1866: /* Resolve the end marker if it is indirect. */
1867:
1.238 schwarze 1868: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 1869: deftype = ROFFDEF_USER;
1870: name = roff_getstrn(r, iname, namesz, &deftype);
1871: if (name == NULL) {
1.220 schwarze 1872: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1873: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1874: "%.*s", (int)namesz, iname);
1875: namesz = 0;
1876: } else
1877: namesz = strlen(name);
1878: } else
1879: name = iname;
1880:
1.213 schwarze 1881: if (namesz)
1882: r->last->end = mandoc_strndup(name, namesz);
1.78 kristaps 1883:
1.238 schwarze 1884: if (*cp != '\0')
1.217 schwarze 1885: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1.295 schwarze 1886: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.74 kristaps 1887:
1.277 schwarze 1888: return ROFF_IGN;
1.78 kristaps 1889: }
1890:
1891: static enum rofferr
1.80 kristaps 1892: roff_block_sub(ROFF_ARGS)
1.79 kristaps 1893: {
1.294 schwarze 1894: enum roff_tok t;
1.79 kristaps 1895: int i, j;
1896:
1897: /*
1898: * First check whether a custom macro exists at this level. If
1899: * it does, then check against it. This is some of groff's
1900: * stranger behaviours. If we encountered a custom end-scope
1901: * tag and that tag also happens to be a "real" macro, then we
1902: * need to try interpreting it again as a real macro. If it's
1903: * not, then return ignore. Else continue.
1904: */
1905:
1906: if (r->last->end) {
1.130 kristaps 1907: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.238 schwarze 1908: if (buf->buf[i] != r->last->end[j])
1.79 kristaps 1909: break;
1910:
1.238 schwarze 1911: if (r->last->end[j] == '\0' &&
1912: (buf->buf[i] == '\0' ||
1913: buf->buf[i] == ' ' ||
1914: buf->buf[i] == '\t')) {
1.79 kristaps 1915: roffnode_pop(r);
1916: roffnode_cleanscope(r);
1917:
1.238 schwarze 1918: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.130 kristaps 1919: i++;
1920:
1921: pos = i;
1.238 schwarze 1922: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.294 schwarze 1923: TOKEN_NONE)
1.277 schwarze 1924: return ROFF_RERUN;
1925: return ROFF_IGN;
1.79 kristaps 1926: }
1927: }
1928:
1929: /*
1930: * If we have no custom end-query or lookup failed, then try
1931: * pulling it out of the hashtable.
1932: */
1933:
1.238 schwarze 1934: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.79 kristaps 1935:
1.238 schwarze 1936: if (t != ROFF_cblock) {
1937: if (tok != ROFF_ig)
1938: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.277 schwarze 1939: return ROFF_IGN;
1.106 kristaps 1940: }
1.79 kristaps 1941:
1.277 schwarze 1942: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1943: }
1944:
1945: static enum rofferr
1.80 kristaps 1946: roff_block_text(ROFF_ARGS)
1.78 kristaps 1947: {
1948:
1.238 schwarze 1949: if (tok != ROFF_ig)
1950: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.106 kristaps 1951:
1.277 schwarze 1952: return ROFF_IGN;
1.78 kristaps 1953: }
1954:
1955: static enum rofferr
1.82 kristaps 1956: roff_cond_sub(ROFF_ARGS)
1957: {
1.294 schwarze 1958: enum roff_tok t;
1.139 kristaps 1959: char *ep;
1.198 schwarze 1960: int rr;
1.82 kristaps 1961:
1962: rr = r->last->rule;
1.139 kristaps 1963: roffnode_cleanscope(r);
1.144 kristaps 1964:
1.196 schwarze 1965: /*
1966: * If `\}' occurs on a macro line without a preceding macro,
1967: * drop the line completely.
1968: */
1969:
1.238 schwarze 1970: ep = buf->buf + pos;
1971: if (ep[0] == '\\' && ep[1] == '}')
1.198 schwarze 1972: rr = 0;
1.196 schwarze 1973:
1.177 schwarze 1974: /* Always check for the closing delimiter `\}'. */
1.144 kristaps 1975:
1.238 schwarze 1976: while ((ep = strchr(ep, '\\')) != NULL) {
1.318 schwarze 1977: switch (ep[1]) {
1978: case '}':
1979: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1980: roff_ccond(r, ln, ep - buf->buf);
1981: break;
1982: case '\0':
1983: ++ep;
1984: break;
1985: default:
1986: ep += 2;
1987: break;
1.197 schwarze 1988: }
1.177 schwarze 1989: }
1.318 schwarze 1990:
1991: /*
1992: * Fully handle known macros when they are structurally
1993: * required or when the conditional evaluated to true.
1994: */
1995:
1996: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1997: return t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT)
1998: ? (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs) : rr
1999: ? ROFF_CONT : ROFF_IGN;
1.82 kristaps 2000: }
2001:
2002: static enum rofferr
2003: roff_cond_text(ROFF_ARGS)
1.78 kristaps 2004: {
1.140 kristaps 2005: char *ep;
1.198 schwarze 2006: int rr;
1.82 kristaps 2007:
2008: rr = r->last->rule;
1.140 kristaps 2009: roffnode_cleanscope(r);
1.82 kristaps 2010:
1.238 schwarze 2011: ep = buf->buf + pos;
2012: while ((ep = strchr(ep, '\\')) != NULL) {
2013: if (*(++ep) == '}') {
1.197 schwarze 2014: *ep = '&';
1.238 schwarze 2015: roff_ccond(r, ln, ep - buf->buf - 1);
1.197 schwarze 2016: }
1.247 schwarze 2017: if (*ep != '\0')
2018: ++ep;
1.78 kristaps 2019: }
1.277 schwarze 2020: return rr ? ROFF_CONT : ROFF_IGN;
1.74 kristaps 2021: }
2022:
1.266 schwarze 2023: /* --- handling of numeric and conditional expressions -------------------- */
2024:
1.204 schwarze 2025: /*
2026: * Parse a single signed integer number. Stop at the first non-digit.
2027: * If there is at least one digit, return success and advance the
2028: * parse point, else return failure and let the parse point unchanged.
2029: * Ignore overflows, treat them just like the C language.
2030: */
1.184 schwarze 2031: static int
1.261 schwarze 2032: roff_getnum(const char *v, int *pos, int *res, int flags)
1.184 schwarze 2033: {
1.261 schwarze 2034: int myres, scaled, n, p;
1.206 schwarze 2035:
2036: if (NULL == res)
2037: res = &myres;
1.184 schwarze 2038:
2039: p = *pos;
2040: n = v[p] == '-';
1.261 schwarze 2041: if (n || v[p] == '+')
1.184 schwarze 2042: p++;
2043:
1.261 schwarze 2044: if (flags & ROFFNUM_WHITE)
2045: while (isspace((unsigned char)v[p]))
2046: p++;
2047:
1.184 schwarze 2048: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.204 schwarze 2049: *res = 10 * *res + v[p] - '0';
1.184 schwarze 2050: if (p == *pos + n)
2051: return 0;
2052:
2053: if (n)
2054: *res = -*res;
2055:
1.254 schwarze 2056: /* Each number may be followed by one optional scaling unit. */
2057:
2058: switch (v[p]) {
2059: case 'f':
1.261 schwarze 2060: scaled = *res * 65536;
1.254 schwarze 2061: break;
2062: case 'i':
1.261 schwarze 2063: scaled = *res * 240;
1.254 schwarze 2064: break;
2065: case 'c':
1.261 schwarze 2066: scaled = *res * 240 / 2.54;
1.254 schwarze 2067: break;
2068: case 'v':
2069: case 'P':
1.261 schwarze 2070: scaled = *res * 40;
1.254 schwarze 2071: break;
2072: case 'm':
2073: case 'n':
1.261 schwarze 2074: scaled = *res * 24;
1.254 schwarze 2075: break;
2076: case 'p':
1.261 schwarze 2077: scaled = *res * 10 / 3;
1.254 schwarze 2078: break;
2079: case 'u':
1.261 schwarze 2080: scaled = *res;
1.254 schwarze 2081: break;
2082: case 'M':
1.261 schwarze 2083: scaled = *res * 6 / 25;
1.254 schwarze 2084: break;
2085: default:
1.261 schwarze 2086: scaled = *res;
1.254 schwarze 2087: p--;
2088: break;
2089: }
1.261 schwarze 2090: if (flags & ROFFNUM_SCALE)
2091: *res = scaled;
1.254 schwarze 2092:
2093: *pos = p + 1;
1.277 schwarze 2094: return 1;
1.184 schwarze 2095: }
2096:
1.198 schwarze 2097: /*
2098: * Evaluate a string comparison condition.
2099: * The first character is the delimiter.
2100: * Succeed if the string up to its second occurrence
2101: * matches the string up to its third occurence.
2102: * Advance the cursor after the third occurrence
2103: * or lacking that, to the end of the line.
2104: */
2105: static int
2106: roff_evalstrcond(const char *v, int *pos)
2107: {
2108: const char *s1, *s2, *s3;
2109: int match;
2110:
2111: match = 0;
2112: s1 = v + *pos; /* initial delimiter */
2113: s2 = s1 + 1; /* for scanning the first string */
2114: s3 = strchr(s2, *s1); /* for scanning the second string */
2115:
2116: if (NULL == s3) /* found no middle delimiter */
2117: goto out;
2118:
2119: while ('\0' != *++s3) {
2120: if (*s2 != *s3) { /* mismatch */
2121: s3 = strchr(s3, *s1);
2122: break;
2123: }
2124: if (*s3 == *s1) { /* found the final delimiter */
2125: match = 1;
2126: break;
2127: }
2128: s2++;
2129: }
2130:
2131: out:
2132: if (NULL == s3)
2133: s3 = strchr(s2, '\0');
1.242 schwarze 2134: else if (*s3 != '\0')
1.198 schwarze 2135: s3++;
2136: *pos = s3 - v;
1.277 schwarze 2137: return match;
1.198 schwarze 2138: }
2139:
1.204 schwarze 2140: /*
2141: * Evaluate an optionally negated single character, numerical,
2142: * or string condition.
2143: */
1.198 schwarze 2144: static int
1.271 schwarze 2145: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.88 kristaps 2146: {
1.271 schwarze 2147: char *cp, *name;
2148: size_t sz;
1.315 schwarze 2149: int deftype, number, savepos, istrue, wanttrue;
1.88 kristaps 2150:
1.198 schwarze 2151: if ('!' == v[*pos]) {
2152: wanttrue = 0;
2153: (*pos)++;
2154: } else
2155: wanttrue = 1;
2156:
1.88 kristaps 2157: switch (v[*pos]) {
1.240 schwarze 2158: case '\0':
1.277 schwarze 2159: return 0;
1.207 schwarze 2160: case 'n':
2161: case 'o':
1.88 kristaps 2162: (*pos)++;
1.277 schwarze 2163: return wanttrue;
1.207 schwarze 2164: case 'c':
2165: case 'e':
2166: case 't':
1.239 schwarze 2167: case 'v':
1.88 kristaps 2168: (*pos)++;
1.277 schwarze 2169: return !wanttrue;
1.310 schwarze 2170: case 'd':
1.271 schwarze 2171: case 'r':
1.310 schwarze 2172: cp = v + *pos + 1;
2173: while (*cp == ' ')
2174: cp++;
2175: name = cp;
2176: sz = roff_getname(r, &cp, ln, cp - v);
1.315 schwarze 2177: if (sz == 0)
2178: istrue = 0;
2179: else if (v[*pos] == 'r')
2180: istrue = roff_hasregn(r, name, sz);
2181: else {
2182: deftype = ROFFDEF_ANY;
2183: roff_getstrn(r, name, sz, &deftype);
2184: istrue = !!deftype;
2185: }
1.271 schwarze 2186: *pos = cp - v;
1.310 schwarze 2187: return istrue == wanttrue;
1.88 kristaps 2188: default:
2189: break;
2190: }
2191:
1.241 schwarze 2192: savepos = *pos;
1.261 schwarze 2193: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.277 schwarze 2194: return (number > 0) == wanttrue;
1.241 schwarze 2195: else if (*pos == savepos)
1.277 schwarze 2196: return roff_evalstrcond(v, pos) == wanttrue;
1.204 schwarze 2197: else
1.277 schwarze 2198: return 0;
1.88 kristaps 2199: }
2200:
1.74 kristaps 2201: static enum rofferr
1.103 kristaps 2202: roff_line_ignore(ROFF_ARGS)
1.89 kristaps 2203: {
1.123 schwarze 2204:
1.277 schwarze 2205: return ROFF_IGN;
1.89 kristaps 2206: }
2207:
1.104 kristaps 2208: static enum rofferr
1.251 schwarze 2209: roff_insec(ROFF_ARGS)
2210: {
2211:
2212: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
1.295 schwarze 2213: ln, ppos, roff_name[tok]);
1.277 schwarze 2214: return ROFF_IGN;
1.251 schwarze 2215: }
2216:
2217: static enum rofferr
2218: roff_unsupp(ROFF_ARGS)
2219: {
2220:
2221: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
1.295 schwarze 2222: ln, ppos, roff_name[tok]);
1.277 schwarze 2223: return ROFF_IGN;
1.251 schwarze 2224: }
2225:
2226: static enum rofferr
1.82 kristaps 2227: roff_cond(ROFF_ARGS)
1.74 kristaps 2228: {
1.173 schwarze 2229:
2230: roffnode_push(r, tok, NULL, ln, ppos);
1.74 kristaps 2231:
1.207 schwarze 2232: /*
1.134 kristaps 2233: * An `.el' has no conditional body: it will consume the value
2234: * of the current rstack entry set in prior `ie' calls or
1.207 schwarze 2235: * defaults to DENY.
1.134 kristaps 2236: *
2237: * If we're not an `el', however, then evaluate the conditional.
2238: */
1.133 kristaps 2239:
1.238 schwarze 2240: r->last->rule = tok == ROFF_el ?
1.207 schwarze 2241: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.238 schwarze 2242: roff_evalcond(r, ln, buf->buf, &pos);
1.77 kristaps 2243:
1.134 kristaps 2244: /*
2245: * An if-else will put the NEGATION of the current evaluated
2246: * conditional into the stack of rules.
2247: */
2248:
1.238 schwarze 2249: if (tok == ROFF_ie) {
1.223 schwarze 2250: if (r->rstackpos + 1 == r->rstacksz) {
2251: r->rstacksz += 16;
2252: r->rstack = mandoc_reallocarray(r->rstack,
2253: r->rstacksz, sizeof(int));
1.134 kristaps 2254: }
1.198 schwarze 2255: r->rstack[++r->rstackpos] = !r->last->rule;
1.82 kristaps 2256: }
1.88 kristaps 2257:
2258: /* If the parent has false as its rule, then so do we. */
2259:
1.198 schwarze 2260: if (r->last->parent && !r->last->parent->rule)
2261: r->last->rule = 0;
1.88 kristaps 2262:
2263: /*
1.173 schwarze 2264: * Determine scope.
2265: * If there is nothing on the line after the conditional,
2266: * not even whitespace, use next-line scope.
1.88 kristaps 2267: */
1.74 kristaps 2268:
1.238 schwarze 2269: if (buf->buf[pos] == '\0') {
1.173 schwarze 2270: r->last->endspan = 2;
2271: goto out;
2272: }
2273:
1.238 schwarze 2274: while (buf->buf[pos] == ' ')
1.173 schwarze 2275: pos++;
2276:
2277: /* An opening brace requests multiline scope. */
1.75 kristaps 2278:
1.238 schwarze 2279: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.75 kristaps 2280: r->last->endspan = -1;
2281: pos += 2;
1.272 schwarze 2282: while (buf->buf[pos] == ' ')
2283: pos++;
1.173 schwarze 2284: goto out;
1.207 schwarze 2285: }
1.74 kristaps 2286:
1.77 kristaps 2287: /*
1.173 schwarze 2288: * Anything else following the conditional causes
2289: * single-line scope. Warn if the scope contains
2290: * nothing but trailing whitespace.
1.77 kristaps 2291: */
2292:
1.238 schwarze 2293: if (buf->buf[pos] == '\0')
1.216 schwarze 2294: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
1.295 schwarze 2295: ln, ppos, roff_name[tok]);
1.77 kristaps 2296:
1.173 schwarze 2297: r->last->endspan = 1;
1.74 kristaps 2298:
1.173 schwarze 2299: out:
1.75 kristaps 2300: *offs = pos;
1.277 schwarze 2301: return ROFF_RERUN;
1.83 schwarze 2302: }
2303:
2304: static enum rofferr
1.92 schwarze 2305: roff_ds(ROFF_ARGS)
2306: {
1.212 schwarze 2307: char *string;
2308: const char *name;
2309: size_t namesz;
1.96 kristaps 2310:
1.251 schwarze 2311: /* Ignore groff compatibility mode for now. */
2312:
2313: if (tok == ROFF_ds1)
2314: tok = ROFF_ds;
2315: else if (tok == ROFF_as1)
2316: tok = ROFF_as;
2317:
1.96 kristaps 2318: /*
1.212 schwarze 2319: * The first word is the name of the string.
2320: * If it is empty or terminated by an escape sequence,
2321: * abort the `ds' request without defining anything.
1.96 kristaps 2322: */
1.92 schwarze 2323:
1.238 schwarze 2324: name = string = buf->buf + pos;
2325: if (*name == '\0')
1.277 schwarze 2326: return ROFF_IGN;
1.92 schwarze 2327:
1.212 schwarze 2328: namesz = roff_getname(r, &string, ln, pos);
1.238 schwarze 2329: if (name[namesz] == '\\')
1.277 schwarze 2330: return ROFF_IGN;
1.212 schwarze 2331:
2332: /* Read past the initial double-quote, if any. */
1.238 schwarze 2333: if (*string == '"')
1.92 schwarze 2334: string++;
2335:
1.96 kristaps 2336: /* The rest is the value. */
1.212 schwarze 2337: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2338: ROFF_as == tok);
1.311 schwarze 2339: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.277 schwarze 2340: return ROFF_IGN;
1.92 schwarze 2341: }
2342:
1.204 schwarze 2343: /*
2344: * Parse a single operator, one or two characters long.
2345: * If the operator is recognized, return success and advance the
2346: * parse point, else return failure and let the parse point unchanged.
2347: */
2348: static int
2349: roff_getop(const char *v, int *pos, char *res)
2350: {
2351:
2352: *res = v[*pos];
2353:
2354: switch (*res) {
1.207 schwarze 2355: case '+':
2356: case '-':
2357: case '*':
2358: case '/':
2359: case '%':
2360: case '&':
2361: case ':':
1.204 schwarze 2362: break;
2363: case '<':
2364: switch (v[*pos + 1]) {
1.207 schwarze 2365: case '=':
1.204 schwarze 2366: *res = 'l';
2367: (*pos)++;
2368: break;
1.207 schwarze 2369: case '>':
1.204 schwarze 2370: *res = '!';
2371: (*pos)++;
2372: break;
1.207 schwarze 2373: case '?':
1.204 schwarze 2374: *res = 'i';
2375: (*pos)++;
2376: break;
2377: default:
2378: break;
2379: }
2380: break;
2381: case '>':
2382: switch (v[*pos + 1]) {
1.207 schwarze 2383: case '=':
1.204 schwarze 2384: *res = 'g';
2385: (*pos)++;
2386: break;
1.207 schwarze 2387: case '?':
1.204 schwarze 2388: *res = 'a';
2389: (*pos)++;
2390: break;
2391: default:
2392: break;
2393: }
2394: break;
2395: case '=':
2396: if ('=' == v[*pos + 1])
2397: (*pos)++;
2398: break;
2399: default:
1.277 schwarze 2400: return 0;
1.204 schwarze 2401: }
2402: (*pos)++;
2403:
1.277 schwarze 2404: return *res;
1.204 schwarze 2405: }
2406:
2407: /*
2408: * Evaluate either a parenthesized numeric expression
2409: * or a single signed integer number.
2410: */
2411: static int
1.235 schwarze 2412: roff_evalpar(struct roff *r, int ln,
1.261 schwarze 2413: const char *v, int *pos, int *res, int flags)
1.204 schwarze 2414: {
2415:
2416: if ('(' != v[*pos])
1.277 schwarze 2417: return roff_getnum(v, pos, res, flags);
1.204 schwarze 2418:
2419: (*pos)++;
1.261 schwarze 2420: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.277 schwarze 2421: return 0;
1.204 schwarze 2422:
1.206 schwarze 2423: /*
2424: * Omission of the closing parenthesis
2425: * is an error in validation mode,
2426: * but ignored in evaluation mode.
2427: */
2428:
1.204 schwarze 2429: if (')' == v[*pos])
2430: (*pos)++;
1.206 schwarze 2431: else if (NULL == res)
1.277 schwarze 2432: return 0;
1.204 schwarze 2433:
1.277 schwarze 2434: return 1;
1.204 schwarze 2435: }
2436:
2437: /*
2438: * Evaluate a complete numeric expression.
2439: * Proceed left to right, there is no concept of precedence.
2440: */
2441: static int
1.235 schwarze 2442: roff_evalnum(struct roff *r, int ln, const char *v,
1.261 schwarze 2443: int *pos, int *res, int flags)
1.204 schwarze 2444: {
2445: int mypos, operand2;
2446: char operator;
2447:
2448: if (NULL == pos) {
2449: mypos = 0;
2450: pos = &mypos;
2451: }
2452:
1.261 schwarze 2453: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2454: while (isspace((unsigned char)v[*pos]))
2455: (*pos)++;
2456:
1.261 schwarze 2457: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.277 schwarze 2458: return 0;
1.204 schwarze 2459:
2460: while (1) {
1.261 schwarze 2461: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2462: while (isspace((unsigned char)v[*pos]))
2463: (*pos)++;
2464:
2465: if ( ! roff_getop(v, pos, &operator))
2466: break;
2467:
1.261 schwarze 2468: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2469: while (isspace((unsigned char)v[*pos]))
2470: (*pos)++;
2471:
1.261 schwarze 2472: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.277 schwarze 2473: return 0;
1.204 schwarze 2474:
1.261 schwarze 2475: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2476: while (isspace((unsigned char)v[*pos]))
2477: (*pos)++;
1.206 schwarze 2478:
2479: if (NULL == res)
2480: continue;
1.204 schwarze 2481:
2482: switch (operator) {
1.207 schwarze 2483: case '+':
1.204 schwarze 2484: *res += operand2;
2485: break;
1.207 schwarze 2486: case '-':
1.204 schwarze 2487: *res -= operand2;
2488: break;
1.207 schwarze 2489: case '*':
1.204 schwarze 2490: *res *= operand2;
2491: break;
1.207 schwarze 2492: case '/':
1.244 schwarze 2493: if (operand2 == 0) {
1.235 schwarze 2494: mandoc_msg(MANDOCERR_DIVZERO,
1.234 kristaps 2495: r->parse, ln, *pos, v);
2496: *res = 0;
2497: break;
2498: }
1.204 schwarze 2499: *res /= operand2;
2500: break;
1.207 schwarze 2501: case '%':
1.244 schwarze 2502: if (operand2 == 0) {
2503: mandoc_msg(MANDOCERR_DIVZERO,
2504: r->parse, ln, *pos, v);
2505: *res = 0;
2506: break;
2507: }
1.204 schwarze 2508: *res %= operand2;
2509: break;
1.207 schwarze 2510: case '<':
1.204 schwarze 2511: *res = *res < operand2;
2512: break;
1.207 schwarze 2513: case '>':
1.204 schwarze 2514: *res = *res > operand2;
2515: break;
1.207 schwarze 2516: case 'l':
1.204 schwarze 2517: *res = *res <= operand2;
2518: break;
1.207 schwarze 2519: case 'g':
1.204 schwarze 2520: *res = *res >= operand2;
2521: break;
1.207 schwarze 2522: case '=':
1.204 schwarze 2523: *res = *res == operand2;
2524: break;
1.207 schwarze 2525: case '!':
1.204 schwarze 2526: *res = *res != operand2;
2527: break;
1.207 schwarze 2528: case '&':
1.204 schwarze 2529: *res = *res && operand2;
2530: break;
1.207 schwarze 2531: case ':':
1.204 schwarze 2532: *res = *res || operand2;
2533: break;
1.207 schwarze 2534: case 'i':
1.204 schwarze 2535: if (operand2 < *res)
2536: *res = operand2;
2537: break;
1.207 schwarze 2538: case 'a':
1.204 schwarze 2539: if (operand2 > *res)
2540: *res = operand2;
2541: break;
2542: default:
2543: abort();
2544: }
2545: }
1.277 schwarze 2546: return 1;
1.204 schwarze 2547: }
2548:
1.266 schwarze 2549: /* --- register management ------------------------------------------------ */
2550:
1.180 schwarze 2551: void
1.187 schwarze 2552: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.147 kristaps 2553: {
1.327 schwarze 2554: roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
1.326 schwarze 2555: }
2556:
2557: static void
2558: roff_setregn(struct roff *r, const char *name, size_t len,
1.327 schwarze 2559: int val, char sign, int step)
1.326 schwarze 2560: {
1.180 schwarze 2561: struct roffreg *reg;
2562:
2563: /* Search for an existing register with the same name. */
2564: reg = r->regtab;
2565:
1.326 schwarze 2566: while (reg != NULL && (reg->key.sz != len ||
2567: strncmp(reg->key.p, name, len) != 0))
1.180 schwarze 2568: reg = reg->next;
1.147 kristaps 2569:
1.180 schwarze 2570: if (NULL == reg) {
2571: /* Create a new register. */
2572: reg = mandoc_malloc(sizeof(struct roffreg));
1.326 schwarze 2573: reg->key.p = mandoc_strndup(name, len);
2574: reg->key.sz = len;
1.187 schwarze 2575: reg->val = 0;
1.327 schwarze 2576: reg->step = 0;
1.180 schwarze 2577: reg->next = r->regtab;
2578: r->regtab = reg;
2579: }
2580:
1.187 schwarze 2581: if ('+' == sign)
2582: reg->val += val;
2583: else if ('-' == sign)
2584: reg->val -= val;
2585: else
2586: reg->val = val;
1.327 schwarze 2587: if (step != INT_MIN)
2588: reg->step = step;
1.147 kristaps 2589: }
2590:
1.192 schwarze 2591: /*
2592: * Handle some predefined read-only number registers.
2593: * For now, return -1 if the requested register is not predefined;
2594: * in case a predefined read-only register having the value -1
2595: * were to turn up, another special value would have to be chosen.
2596: */
2597: static int
1.273 schwarze 2598: roff_getregro(const struct roff *r, const char *name)
1.192 schwarze 2599: {
2600:
2601: switch (*name) {
1.273 schwarze 2602: case '$': /* Number of arguments of the last macro evaluated. */
1.277 schwarze 2603: return r->argc;
1.207 schwarze 2604: case 'A': /* ASCII approximation mode is always off. */
1.277 schwarze 2605: return 0;
1.207 schwarze 2606: case 'g': /* Groff compatibility mode is always on. */
1.277 schwarze 2607: return 1;
1.207 schwarze 2608: case 'H': /* Fixed horizontal resolution. */
1.277 schwarze 2609: return 24;
1.207 schwarze 2610: case 'j': /* Always adjust left margin only. */
1.277 schwarze 2611: return 0;
1.207 schwarze 2612: case 'T': /* Some output device is always defined. */
1.277 schwarze 2613: return 1;
1.207 schwarze 2614: case 'V': /* Fixed vertical resolution. */
1.277 schwarze 2615: return 40;
1.192 schwarze 2616: default:
1.277 schwarze 2617: return -1;
1.192 schwarze 2618: }
2619: }
2620:
1.181 schwarze 2621: int
1.326 schwarze 2622: roff_getreg(struct roff *r, const char *name)
1.147 kristaps 2623: {
1.327 schwarze 2624: return roff_getregn(r, name, strlen(name), '\0');
1.181 schwarze 2625: }
2626:
2627: static int
1.327 schwarze 2628: roff_getregn(struct roff *r, const char *name, size_t len, char sign)
1.181 schwarze 2629: {
2630: struct roffreg *reg;
1.192 schwarze 2631: int val;
2632:
2633: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2634: val = roff_getregro(r, name + 1);
1.192 schwarze 2635: if (-1 != val)
1.277 schwarze 2636: return val;
1.192 schwarze 2637: }
1.181 schwarze 2638:
1.327 schwarze 2639: for (reg = r->regtab; reg; reg = reg->next) {
1.181 schwarze 2640: if (len == reg->key.sz &&
1.327 schwarze 2641: 0 == strncmp(name, reg->key.p, len)) {
2642: switch (sign) {
2643: case '+':
2644: reg->val += reg->step;
2645: break;
2646: case '-':
2647: reg->val -= reg->step;
2648: break;
2649: default:
2650: break;
2651: }
1.277 schwarze 2652: return reg->val;
1.327 schwarze 2653: }
2654: }
1.271 schwarze 2655:
1.327 schwarze 2656: roff_setregn(r, name, len, 0, '\0', INT_MIN);
1.277 schwarze 2657: return 0;
1.271 schwarze 2658: }
2659:
2660: static int
2661: roff_hasregn(const struct roff *r, const char *name, size_t len)
2662: {
2663: struct roffreg *reg;
2664: int val;
2665:
2666: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2667: val = roff_getregro(r, name + 1);
1.271 schwarze 2668: if (-1 != val)
1.277 schwarze 2669: return 1;
1.271 schwarze 2670: }
2671:
2672: for (reg = r->regtab; reg; reg = reg->next)
2673: if (len == reg->key.sz &&
2674: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2675: return 1;
1.147 kristaps 2676:
1.277 schwarze 2677: return 0;
1.147 kristaps 2678: }
2679:
1.180 schwarze 2680: static void
2681: roff_freereg(struct roffreg *reg)
1.147 kristaps 2682: {
1.180 schwarze 2683: struct roffreg *old_reg;
1.147 kristaps 2684:
1.180 schwarze 2685: while (NULL != reg) {
2686: free(reg->key.p);
2687: old_reg = reg;
2688: reg = reg->next;
2689: free(old_reg);
2690: }
1.147 kristaps 2691: }
1.92 schwarze 2692:
2693: static enum rofferr
1.89 kristaps 2694: roff_nr(ROFF_ARGS)
1.83 schwarze 2695: {
1.327 schwarze 2696: char *key, *val, *step;
1.212 schwarze 2697: size_t keysz;
1.327 schwarze 2698: int iv, is, len;
1.187 schwarze 2699: char sign;
1.89 kristaps 2700:
1.238 schwarze 2701: key = val = buf->buf + pos;
2702: if (*key == '\0')
1.277 schwarze 2703: return ROFF_IGN;
1.212 schwarze 2704:
2705: keysz = roff_getname(r, &val, ln, pos);
1.238 schwarze 2706: if (key[keysz] == '\\')
1.277 schwarze 2707: return ROFF_IGN;
1.89 kristaps 2708:
1.187 schwarze 2709: sign = *val;
1.238 schwarze 2710: if (sign == '+' || sign == '-')
1.187 schwarze 2711: val++;
2712:
1.327 schwarze 2713: len = 0;
2714: if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
2715: return ROFF_IGN;
2716:
2717: step = val + len;
2718: while (isspace((unsigned char)*step))
2719: step++;
2720: if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)
2721: is = INT_MIN;
1.109 kristaps 2722:
1.327 schwarze 2723: roff_setregn(r, key, keysz, iv, sign, is);
1.277 schwarze 2724: return ROFF_IGN;
1.203 schwarze 2725: }
2726:
2727: static enum rofferr
2728: roff_rr(ROFF_ARGS)
2729: {
2730: struct roffreg *reg, **prev;
1.212 schwarze 2731: char *name, *cp;
2732: size_t namesz;
1.203 schwarze 2733:
1.238 schwarze 2734: name = cp = buf->buf + pos;
2735: if (*name == '\0')
1.277 schwarze 2736: return ROFF_IGN;
1.212 schwarze 2737: namesz = roff_getname(r, &cp, ln, pos);
2738: name[namesz] = '\0';
1.203 schwarze 2739:
2740: prev = &r->regtab;
2741: while (1) {
2742: reg = *prev;
1.238 schwarze 2743: if (reg == NULL || !strcmp(name, reg->key.p))
1.203 schwarze 2744: break;
2745: prev = ®->next;
2746: }
1.238 schwarze 2747: if (reg != NULL) {
1.203 schwarze 2748: *prev = reg->next;
2749: free(reg->key.p);
2750: free(reg);
2751: }
1.277 schwarze 2752: return ROFF_IGN;
1.122 schwarze 2753: }
2754:
1.266 schwarze 2755: /* --- handler functions for roff requests -------------------------------- */
2756:
1.122 schwarze 2757: static enum rofferr
2758: roff_rm(ROFF_ARGS)
2759: {
2760: const char *name;
2761: char *cp;
1.212 schwarze 2762: size_t namesz;
1.122 schwarze 2763:
1.238 schwarze 2764: cp = buf->buf + pos;
2765: while (*cp != '\0') {
1.212 schwarze 2766: name = cp;
1.238 schwarze 2767: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.212 schwarze 2768: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.311 schwarze 2769: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.238 schwarze 2770: if (name[namesz] == '\\')
1.212 schwarze 2771: break;
1.122 schwarze 2772: }
1.277 schwarze 2773: return ROFF_IGN;
1.178 schwarze 2774: }
2775:
2776: static enum rofferr
2777: roff_it(ROFF_ARGS)
2778: {
2779: int iv;
2780:
2781: /* Parse the number of lines. */
1.261 schwarze 2782:
2783: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.222 schwarze 2784: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.238 schwarze 2785: ln, ppos, buf->buf + 1);
1.277 schwarze 2786: return ROFF_IGN;
1.178 schwarze 2787: }
2788:
1.262 schwarze 2789: while (isspace((unsigned char)buf->buf[pos]))
2790: pos++;
2791:
2792: /*
2793: * Arm the input line trap.
2794: * Special-casing "an-trap" is an ugly workaround to cope
2795: * with DocBook stupidly fiddling with man(7) internals.
2796: */
1.261 schwarze 2797:
1.178 schwarze 2798: roffit_lines = iv;
1.262 schwarze 2799: roffit_macro = mandoc_strdup(iv != 1 ||
2800: strcmp(buf->buf + pos, "an-trap") ?
2801: buf->buf + pos : "br");
1.277 schwarze 2802: return ROFF_IGN;
1.175 schwarze 2803: }
2804:
2805: static enum rofferr
2806: roff_Dd(ROFF_ARGS)
2807: {
1.315 schwarze 2808: int mask;
2809: enum roff_tok t, te;
1.227 schwarze 2810:
1.315 schwarze 2811: switch (tok) {
2812: case ROFF_Dd:
2813: tok = MDOC_Dd;
2814: te = MDOC_MAX;
2815: if (r->format == 0)
2816: r->format = MPARSE_MDOC;
2817: mask = MPARSE_MDOC | MPARSE_QUICK;
2818: break;
2819: case ROFF_TH:
2820: tok = MAN_TH;
2821: te = MAN_MAX;
2822: if (r->format == 0)
2823: r->format = MPARSE_MAN;
2824: mask = MPARSE_QUICK;
2825: break;
2826: default:
2827: abort();
2828: }
2829: if ((r->options & mask) == 0)
2830: for (t = tok; t < te; t++)
2831: roff_setstr(r, roff_name[t], NULL, 0);
1.277 schwarze 2832: return ROFF_CONT;
1.109 kristaps 2833: }
2834:
2835: static enum rofferr
2836: roff_TE(ROFF_ARGS)
2837: {
1.321 schwarze 2838: if (r->tbl == NULL) {
1.221 schwarze 2839: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2840: ln, ppos, "TE");
1.321 schwarze 2841: return ROFF_IGN;
2842: }
2843: if (tbl_end(r->tbl) == 0) {
2844: r->tbl = NULL;
1.258 schwarze 2845: free(buf->buf);
2846: buf->buf = mandoc_strdup(".sp");
2847: buf->sz = 4;
1.277 schwarze 2848: return ROFF_REPARSE;
1.258 schwarze 2849: }
1.321 schwarze 2850: r->tbl = NULL;
1.277 schwarze 2851: return ROFF_IGN;
1.112 kristaps 2852: }
2853:
2854: static enum rofferr
2855: roff_T_(ROFF_ARGS)
2856: {
2857:
2858: if (NULL == r->tbl)
1.221 schwarze 2859: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2860: ln, ppos, "T&");
1.112 kristaps 2861: else
1.296 schwarze 2862: tbl_restart(ln, ppos, r->tbl);
1.112 kristaps 2863:
1.277 schwarze 2864: return ROFF_IGN;
1.109 kristaps 2865: }
2866:
1.230 schwarze 2867: /*
2868: * Handle in-line equation delimiters.
2869: */
2870: static enum rofferr
1.238 schwarze 2871: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.151 kristaps 2872: {
1.233 schwarze 2873: char *cp1, *cp2;
2874: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.151 kristaps 2875:
1.230 schwarze 2876: /*
2877: * Outside equations, look for an opening delimiter.
2878: * If we are inside an equation, we already know it is
2879: * in-line, or this function wouldn't have been called;
2880: * so look for a closing delimiter.
2881: */
2882:
1.238 schwarze 2883: cp1 = buf->buf + pos;
1.230 schwarze 2884: cp2 = strchr(cp1, r->eqn == NULL ?
2885: r->last_eqn->odelim : r->last_eqn->cdelim);
2886: if (cp2 == NULL)
1.277 schwarze 2887: return ROFF_CONT;
1.230 schwarze 2888:
1.233 schwarze 2889: *cp2++ = '\0';
2890: bef_pr = bef_nl = aft_nl = aft_pr = "";
2891:
2892: /* Handle preceding text, protecting whitespace. */
2893:
1.238 schwarze 2894: if (*buf->buf != '\0') {
1.233 schwarze 2895: if (r->eqn == NULL)
2896: bef_pr = "\\&";
2897: bef_nl = "\n";
2898: }
2899:
2900: /*
2901: * Prepare replacing the delimiter with an equation macro
2902: * and drop leading white space from the equation.
2903: */
1.230 schwarze 2904:
1.233 schwarze 2905: if (r->eqn == NULL) {
2906: while (*cp2 == ' ')
2907: cp2++;
2908: mac = ".EQ";
2909: } else
2910: mac = ".EN";
2911:
2912: /* Handle following text, protecting whitespace. */
2913:
2914: if (*cp2 != '\0') {
2915: aft_nl = "\n";
2916: if (r->eqn != NULL)
2917: aft_pr = "\\&";
2918: }
2919:
2920: /* Do the actual replacement. */
2921:
1.238 schwarze 2922: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.233 schwarze 2923: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.238 schwarze 2924: free(buf->buf);
2925: buf->buf = cp1;
1.230 schwarze 2926:
2927: /* Toggle the in-line state of the eqn subsystem. */
2928:
2929: r->eqn_inline = r->eqn == NULL;
1.277 schwarze 2930: return ROFF_REPARSE;
1.151 kristaps 2931: }
2932:
1.235 schwarze 2933: static enum rofferr
2934: roff_EQ(ROFF_ARGS)
1.125 kristaps 2935: {
1.319 schwarze 2936: struct roff_node *n;
2937:
1.322 schwarze 2938: if (r->man->macroset == MACROSET_MAN)
2939: man_breakscope(r->man, ROFF_EQ);
1.319 schwarze 2940: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
2941: if (ln > r->man->last->line)
2942: n->flags |= NODE_LINE;
2943: n->eqn = mandoc_calloc(1, sizeof(*n->eqn));
2944: n->eqn->expectargs = UINT_MAX;
2945: roff_node_append(r->man, n);
2946: r->man->next = ROFF_NEXT_SIBLING;
1.125 kristaps 2947:
1.238 schwarze 2948: assert(r->eqn == NULL);
1.319 schwarze 2949: if (r->last_eqn == NULL)
2950: r->last_eqn = eqn_alloc(r->parse);
2951: else
2952: eqn_reset(r->last_eqn);
2953: r->eqn = r->last_eqn;
2954: r->eqn->node = n;
1.151 kristaps 2955:
1.238 schwarze 2956: if (buf->buf[pos] != '\0')
1.235 schwarze 2957: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 2958: ".EQ %s", buf->buf + pos);
1.151 kristaps 2959:
1.277 schwarze 2960: return ROFF_IGN;
1.125 kristaps 2961: }
2962:
2963: static enum rofferr
2964: roff_EN(ROFF_ARGS)
2965: {
1.319 schwarze 2966: if (r->eqn != NULL) {
2967: eqn_parse(r->eqn);
2968: r->eqn = NULL;
2969: } else
2970: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
2971: if (buf->buf[pos] != '\0')
2972: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
2973: "EN %s", buf->buf + pos);
1.277 schwarze 2974: return ROFF_IGN;
1.125 kristaps 2975: }
2976:
2977: static enum rofferr
1.109 kristaps 2978: roff_TS(ROFF_ARGS)
2979: {
1.321 schwarze 2980: if (r->tbl != NULL) {
1.221 schwarze 2981: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
2982: ln, ppos, "TS breaks TS");
1.321 schwarze 2983: tbl_end(r->tbl);
1.115 kristaps 2984: }
1.321 schwarze 2985: r->tbl = tbl_alloc(ppos, ln, r->parse);
1.113 kristaps 2986: if (r->last_tbl)
1.321 schwarze 2987: r->last_tbl->next = r->tbl;
1.113 kristaps 2988: else
1.321 schwarze 2989: r->first_tbl = r->tbl;
2990: r->last_tbl = r->tbl;
1.297 schwarze 2991: return ROFF_IGN;
2992: }
2993:
2994: static enum rofferr
2995: roff_onearg(ROFF_ARGS)
2996: {
2997: struct roff_node *n;
2998: char *cp;
1.305 schwarze 2999: int npos;
1.297 schwarze 3000:
1.302 schwarze 3001: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.320 schwarze 3002: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
3003: tok == ROFF_ti))
1.302 schwarze 3004: man_breakscope(r->man, tok);
3005:
1.309 schwarze 3006: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.305 schwarze 3007: r->man->last = roffce_node;
3008: r->man->next = ROFF_NEXT_SIBLING;
3009: }
3010:
1.297 schwarze 3011: roff_elem_alloc(r->man, ln, ppos, tok);
3012: n = r->man->last;
3013:
3014: cp = buf->buf + pos;
3015: if (*cp != '\0') {
3016: while (*cp != '\0' && *cp != ' ')
3017: cp++;
3018: while (*cp == ' ')
3019: *cp++ = '\0';
3020: if (*cp != '\0')
3021: mandoc_vmsg(MANDOCERR_ARG_EXCESS,
3022: r->parse, ln, cp - buf->buf,
3023: "%s ... %s", roff_name[tok], cp);
3024: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.300 schwarze 3025: }
3026:
1.309 schwarze 3027: if (tok == ROFF_ce || tok == ROFF_rj) {
3028: if (r->man->last->type == ROFFT_ELEM) {
1.305 schwarze 3029: roff_word_alloc(r->man, ln, pos, "1");
3030: r->man->last->flags |= NODE_NOSRC;
3031: }
3032: npos = 0;
3033: if (roff_evalnum(r, ln, r->man->last->string, &npos,
3034: &roffce_lines, 0) == 0) {
3035: mandoc_vmsg(MANDOCERR_CE_NONUM,
3036: r->parse, ln, pos, "ce %s", buf->buf + pos);
3037: roffce_lines = 1;
3038: }
3039: if (roffce_lines < 1) {
3040: r->man->last = r->man->last->parent;
3041: roffce_node = NULL;
3042: roffce_lines = 0;
3043: } else
3044: roffce_node = r->man->last->parent;
3045: } else {
3046: n->flags |= NODE_VALID | NODE_ENDED;
3047: r->man->last = n;
3048: }
3049: n->flags |= NODE_LINE;
1.300 schwarze 3050: r->man->next = ROFF_NEXT_SIBLING;
3051: return ROFF_IGN;
3052: }
3053:
3054: static enum rofferr
3055: roff_manyarg(ROFF_ARGS)
3056: {
3057: struct roff_node *n;
3058: char *sp, *ep;
3059:
3060: roff_elem_alloc(r->man, ln, ppos, tok);
3061: n = r->man->last;
3062:
3063: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3064: while (*ep != '\0' && *ep != ' ')
3065: ep++;
3066: while (*ep == ' ')
3067: *ep++ = '\0';
3068: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.297 schwarze 3069: }
3070:
3071: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3072: r->man->last = n;
3073: r->man->next = ROFF_NEXT_SIBLING;
1.277 schwarze 3074: return ROFF_IGN;
1.251 schwarze 3075: }
3076:
3077: static enum rofferr
1.311 schwarze 3078: roff_als(ROFF_ARGS)
3079: {
3080: char *oldn, *newn, *end, *value;
3081: size_t oldsz, newsz, valsz;
3082:
3083: newn = oldn = buf->buf + pos;
3084: if (*newn == '\0')
3085: return ROFF_IGN;
3086:
3087: newsz = roff_getname(r, &oldn, ln, pos);
3088: if (newn[newsz] == '\\' || *oldn == '\0')
3089: return ROFF_IGN;
3090:
3091: end = oldn;
3092: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3093: if (oldsz == 0)
3094: return ROFF_IGN;
3095:
1.315 schwarze 3096: valsz = mandoc_asprintf(&value, ".%.*s \\$*\\\"\n",
3097: (int)oldsz, oldn);
1.311 schwarze 3098: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3099: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3100: free(value);
3101: return ROFF_IGN;
3102: }
3103:
3104: static enum rofferr
1.296 schwarze 3105: roff_br(ROFF_ARGS)
1.251 schwarze 3106: {
1.302 schwarze 3107: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3108: man_breakscope(r->man, ROFF_br);
1.296 schwarze 3109: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
3110: if (buf->buf[pos] != '\0')
3111: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
3112: "%s %s", roff_name[tok], buf->buf + pos);
3113: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3114: r->man->next = ROFF_NEXT_SIBLING;
3115: return ROFF_IGN;
1.92 schwarze 3116: }
3117:
1.105 kristaps 3118: static enum rofferr
1.174 kristaps 3119: roff_cc(ROFF_ARGS)
3120: {
3121: const char *p;
3122:
1.238 schwarze 3123: p = buf->buf + pos;
1.174 kristaps 3124:
1.238 schwarze 3125: if (*p == '\0' || (r->control = *p++) == '.')
1.303 schwarze 3126: r->control = '\0';
1.174 kristaps 3127:
1.238 schwarze 3128: if (*p != '\0')
1.260 schwarze 3129: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3130: ln, p - buf->buf, "cc ... %s", p);
1.174 kristaps 3131:
1.277 schwarze 3132: return ROFF_IGN;
1.174 kristaps 3133: }
3134:
3135: static enum rofferr
1.303 schwarze 3136: roff_ec(ROFF_ARGS)
3137: {
3138: const char *p;
3139:
3140: p = buf->buf + pos;
3141: if (*p == '\0')
3142: r->escape = '\\';
3143: else {
3144: r->escape = *p;
3145: if (*++p != '\0')
3146: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3147: ln, p - buf->buf, "ec ... %s", p);
3148: }
3149: return ROFF_IGN;
3150: }
3151:
3152: static enum rofferr
3153: roff_eo(ROFF_ARGS)
3154: {
3155: r->escape = '\0';
3156: if (buf->buf[pos] != '\0')
3157: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse,
3158: ln, pos, "eo %s", buf->buf + pos);
3159: return ROFF_IGN;
3160: }
3161:
3162: static enum rofferr
1.164 kristaps 3163: roff_tr(ROFF_ARGS)
3164: {
3165: const char *p, *first, *second;
3166: size_t fsz, ssz;
3167: enum mandoc_esc esc;
3168:
1.238 schwarze 3169: p = buf->buf + pos;
1.164 kristaps 3170:
1.238 schwarze 3171: if (*p == '\0') {
1.260 schwarze 3172: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.277 schwarze 3173: return ROFF_IGN;
1.164 kristaps 3174: }
3175:
1.238 schwarze 3176: while (*p != '\0') {
1.164 kristaps 3177: fsz = ssz = 1;
3178:
3179: first = p++;
1.238 schwarze 3180: if (*first == '\\') {
1.164 kristaps 3181: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3182: if (esc == ESCAPE_ERROR) {
1.219 schwarze 3183: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 3184: ln, (int)(p - buf->buf), first);
1.277 schwarze 3185: return ROFF_IGN;
1.164 kristaps 3186: }
3187: fsz = (size_t)(p - first);
3188: }
3189:
3190: second = p++;
1.238 schwarze 3191: if (*second == '\\') {
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), second);
1.277 schwarze 3196: return ROFF_IGN;
1.164 kristaps 3197: }
3198: ssz = (size_t)(p - second);
1.238 schwarze 3199: } else if (*second == '\0') {
1.260 schwarze 3200: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
3201: ln, first - buf->buf, "tr %s", first);
1.164 kristaps 3202: second = " ";
1.165 kristaps 3203: p--;
1.164 kristaps 3204: }
3205:
1.167 kristaps 3206: if (fsz > 1) {
1.207 schwarze 3207: roff_setstrn(&r->xmbtab, first, fsz,
3208: second, ssz, 0);
1.167 kristaps 3209: continue;
3210: }
3211:
1.238 schwarze 3212: if (r->xtab == NULL)
1.207 schwarze 3213: r->xtab = mandoc_calloc(128,
3214: sizeof(struct roffstr));
1.167 kristaps 3215:
3216: free(r->xtab[(int)*first].p);
3217: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3218: r->xtab[(int)*first].sz = ssz;
1.164 kristaps 3219: }
3220:
1.277 schwarze 3221: return ROFF_IGN;
1.164 kristaps 3222: }
3223:
3224: static enum rofferr
1.306 schwarze 3225: roff_rn(ROFF_ARGS)
3226: {
3227: const char *value;
3228: char *oldn, *newn, *end;
3229: size_t oldsz, newsz;
1.315 schwarze 3230: int deftype;
1.306 schwarze 3231:
3232: oldn = newn = buf->buf + pos;
3233: if (*oldn == '\0')
3234: return ROFF_IGN;
3235:
3236: oldsz = roff_getname(r, &newn, ln, pos);
3237: if (oldn[oldsz] == '\\' || *newn == '\0')
3238: return ROFF_IGN;
3239:
3240: end = newn;
3241: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3242: if (newsz == 0)
3243: return ROFF_IGN;
3244:
1.315 schwarze 3245: deftype = ROFFDEF_ANY;
3246: value = roff_getstrn(r, oldn, oldsz, &deftype);
3247: switch (deftype) {
3248: case ROFFDEF_USER:
1.306 schwarze 3249: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3250: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3251: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.315 schwarze 3252: break;
3253: case ROFFDEF_PRE:
3254: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3255: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3256: break;
3257: case ROFFDEF_REN:
1.306 schwarze 3258: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3259: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.315 schwarze 3260: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3261: break;
3262: case ROFFDEF_STD:
1.306 schwarze 3263: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.315 schwarze 3264: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3265: break;
3266: default:
3267: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3268: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3269: break;
3270: }
1.306 schwarze 3271: return ROFF_IGN;
3272: }
3273:
3274: static enum rofferr
1.105 kristaps 3275: roff_so(ROFF_ARGS)
3276: {
1.249 schwarze 3277: char *name, *cp;
1.105 kristaps 3278:
1.238 schwarze 3279: name = buf->buf + pos;
1.224 schwarze 3280: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.105 kristaps 3281:
3282: /*
3283: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3284: * opening anything that's not in our cwd or anything beneath
3285: * it. Thus, explicitly disallow traversing up the file-system
3286: * or using absolute paths.
3287: */
3288:
1.238 schwarze 3289: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.210 schwarze 3290: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
3291: ".so %s", name);
1.249 schwarze 3292: buf->sz = mandoc_asprintf(&cp,
3293: ".sp\nSee the file %s.\n.sp", name) + 1;
3294: free(buf->buf);
3295: buf->buf = cp;
3296: *offs = 0;
1.277 schwarze 3297: return ROFF_REPARSE;
1.105 kristaps 3298: }
3299:
3300: *offs = pos;
1.277 schwarze 3301: return ROFF_SO;
1.105 kristaps 3302: }
1.92 schwarze 3303:
1.266 schwarze 3304: /* --- user defined strings and macros ------------------------------------ */
3305:
1.106 kristaps 3306: static enum rofferr
3307: roff_userdef(ROFF_ARGS)
1.99 kristaps 3308: {
1.311 schwarze 3309: const char *arg[16], *ap;
1.106 kristaps 3310: char *cp, *n1, *n2;
1.292 schwarze 3311: int expand_count, i, ib, ie;
1.263 schwarze 3312: size_t asz, rsz;
1.106 kristaps 3313:
3314: /*
3315: * Collect pointers to macro argument strings
1.188 schwarze 3316: * and NUL-terminate them.
1.106 kristaps 3317: */
1.263 schwarze 3318:
1.273 schwarze 3319: r->argc = 0;
1.238 schwarze 3320: cp = buf->buf + pos;
1.311 schwarze 3321: for (i = 0; i < 16; i++) {
1.273 schwarze 3322: if (*cp == '\0')
3323: arg[i] = "";
3324: else {
3325: arg[i] = mandoc_getarg(r->parse, &cp, ln, &pos);
3326: r->argc = i + 1;
3327: }
3328: }
1.99 kristaps 3329:
1.106 kristaps 3330: /*
3331: * Expand macro arguments.
1.99 kristaps 3332: */
1.263 schwarze 3333:
3334: buf->sz = strlen(r->current_string) + 1;
1.292 schwarze 3335: n1 = n2 = cp = mandoc_malloc(buf->sz);
1.263 schwarze 3336: memcpy(n1, r->current_string, buf->sz);
1.292 schwarze 3337: expand_count = 0;
1.263 schwarze 3338: while (*cp != '\0') {
3339:
3340: /* Scan ahead for the next argument invocation. */
3341:
3342: if (*cp++ != '\\')
3343: continue;
3344: if (*cp++ != '$')
3345: continue;
1.274 schwarze 3346: if (*cp == '*') { /* \\$* inserts all arguments */
3347: ib = 0;
3348: ie = r->argc - 1;
3349: } else { /* \\$1 .. \\$9 insert one argument */
3350: ib = ie = *cp - '1';
3351: if (ib < 0 || ib > 8)
3352: continue;
3353: }
1.263 schwarze 3354: cp -= 2;
1.292 schwarze 3355:
3356: /*
3357: * Prevent infinite recursion.
3358: */
3359:
3360: if (cp >= n2)
3361: expand_count = 1;
3362: else if (++expand_count > EXPAND_LIMIT) {
3363: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
3364: ln, (int)(cp - n1), NULL);
1.293 schwarze 3365: free(buf->buf);
3366: buf->buf = n1;
1.292 schwarze 3367: return ROFF_IGN;
3368: }
1.263 schwarze 3369:
3370: /*
3371: * Determine the size of the expanded argument,
3372: * taking escaping of quotes into account.
3373: */
3374:
1.274 schwarze 3375: asz = ie > ib ? ie - ib : 0; /* for blanks */
3376: for (i = ib; i <= ie; i++) {
3377: for (ap = arg[i]; *ap != '\0'; ap++) {
3378: asz++;
3379: if (*ap == '"')
3380: asz += 3;
3381: }
1.263 schwarze 3382: }
3383: if (asz != 3) {
3384:
3385: /*
3386: * Determine the size of the rest of the
3387: * unexpanded macro, including the NUL.
3388: */
3389:
3390: rsz = buf->sz - (cp - n1) - 3;
3391:
3392: /*
3393: * When shrinking, move before
3394: * releasing the storage.
3395: */
3396:
3397: if (asz < 3)
3398: memmove(cp + asz, cp + 3, rsz);
3399:
3400: /*
3401: * Resize the storage for the macro
3402: * and readjust the parse pointer.
3403: */
3404:
3405: buf->sz += asz - 3;
3406: n2 = mandoc_realloc(n1, buf->sz);
3407: cp = n2 + (cp - n1);
3408: n1 = n2;
3409:
3410: /*
3411: * When growing, make room
3412: * for the expanded argument.
3413: */
3414:
3415: if (asz > 3)
3416: memmove(cp + asz, cp + 3, rsz);
3417: }
3418:
3419: /* Copy the expanded argument, escaping quotes. */
3420:
3421: n2 = cp;
1.274 schwarze 3422: for (i = ib; i <= ie; i++) {
3423: for (ap = arg[i]; *ap != '\0'; ap++) {
3424: if (*ap == '"') {
3425: memcpy(n2, "\\(dq", 4);
3426: n2 += 4;
3427: } else
3428: *n2++ = *ap;
3429: }
3430: if (i < ie)
3431: *n2++ = ' ';
1.106 kristaps 3432: }
1.99 kristaps 3433: }
3434:
1.106 kristaps 3435: /*
3436: * Replace the macro invocation
3437: * by the expanded macro.
3438: */
1.263 schwarze 3439:
1.238 schwarze 3440: free(buf->buf);
3441: buf->buf = n1;
1.248 schwarze 3442: *offs = 0;
1.106 kristaps 3443:
1.277 schwarze 3444: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
3445: ROFF_REPARSE : ROFF_APPEND;
1.99 kristaps 3446: }
1.121 schwarze 3447:
1.306 schwarze 3448: /*
3449: * Calling a high-level macro that was renamed with .rn.
3450: * r->current_string has already been set up by roff_parse().
3451: */
3452: static enum rofferr
3453: roff_renamed(ROFF_ARGS)
3454: {
3455: char *nbuf;
3456:
1.315 schwarze 3457: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
3458: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.306 schwarze 3459: free(buf->buf);
3460: buf->buf = nbuf;
3461: return ROFF_CONT;
3462: }
3463:
1.212 schwarze 3464: static size_t
1.121 schwarze 3465: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3466: {
3467: char *name, *cp;
1.212 schwarze 3468: size_t namesz;
1.121 schwarze 3469:
3470: name = *cpp;
3471: if ('\0' == *name)
1.277 schwarze 3472: return 0;
1.121 schwarze 3473:
1.212 schwarze 3474: /* Read until end of name and terminate it with NUL. */
3475: for (cp = name; 1; cp++) {
3476: if ('\0' == *cp || ' ' == *cp) {
3477: namesz = cp - name;
3478: break;
3479: }
1.121 schwarze 3480: if ('\\' != *cp)
3481: continue;
1.215 schwarze 3482: namesz = cp - name;
3483: if ('{' == cp[1] || '}' == cp[1])
3484: break;
1.121 schwarze 3485: cp++;
3486: if ('\\' == *cp)
3487: continue;
1.224 schwarze 3488: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3489: "%.*s", (int)(cp - name + 1), name);
1.212 schwarze 3490: mandoc_escape((const char **)&cp, NULL, NULL);
3491: break;
1.121 schwarze 3492: }
3493:
3494: /* Read past spaces. */
3495: while (' ' == *cp)
3496: cp++;
3497:
3498: *cpp = cp;
1.277 schwarze 3499: return namesz;
1.121 schwarze 3500: }
3501:
1.106 kristaps 3502: /*
3503: * Store *string into the user-defined string called *name.
3504: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.193 schwarze 3505: * append == 0: replace mode
3506: * append == 1: single-line append mode
3507: * append == 2: multiline append mode, append '\n' after each call
1.106 kristaps 3508: */
1.94 kristaps 3509: static void
1.106 kristaps 3510: roff_setstr(struct roff *r, const char *name, const char *string,
1.193 schwarze 3511: int append)
1.92 schwarze 3512: {
1.315 schwarze 3513: size_t namesz;
1.164 kristaps 3514:
1.315 schwarze 3515: namesz = strlen(name);
3516: roff_setstrn(&r->strtab, name, namesz, string,
1.207 schwarze 3517: string ? strlen(string) : 0, append);
1.315 schwarze 3518: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.164 kristaps 3519: }
3520:
3521: static void
1.166 kristaps 3522: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.193 schwarze 3523: const char *string, size_t stringsz, int append)
1.164 kristaps 3524: {
1.166 kristaps 3525: struct roffkv *n;
1.164 kristaps 3526: char *c;
3527: int i;
3528: size_t oldch, newch;
1.92 schwarze 3529:
1.106 kristaps 3530: /* Search for an existing string with the same name. */
1.164 kristaps 3531: n = *r;
3532:
1.211 schwarze 3533: while (n && (namesz != n->key.sz ||
3534: strncmp(n->key.p, name, namesz)))
1.92 schwarze 3535: n = n->next;
1.94 kristaps 3536:
3537: if (NULL == n) {
1.106 kristaps 3538: /* Create a new string table entry. */
1.166 kristaps 3539: n = mandoc_malloc(sizeof(struct roffkv));
3540: n->key.p = mandoc_strndup(name, namesz);
3541: n->key.sz = namesz;
3542: n->val.p = NULL;
3543: n->val.sz = 0;
1.164 kristaps 3544: n->next = *r;
3545: *r = n;
1.193 schwarze 3546: } else if (0 == append) {
1.166 kristaps 3547: free(n->val.p);
3548: n->val.p = NULL;
3549: n->val.sz = 0;
1.106 kristaps 3550: }
3551:
3552: if (NULL == string)
3553: return;
3554:
3555: /*
3556: * One additional byte for the '\n' in multiline mode,
3557: * and one for the terminating '\0'.
3558: */
1.193 schwarze 3559: newch = stringsz + (1 < append ? 2u : 1u);
1.164 kristaps 3560:
1.166 kristaps 3561: if (NULL == n->val.p) {
3562: n->val.p = mandoc_malloc(newch);
3563: *n->val.p = '\0';
1.106 kristaps 3564: oldch = 0;
3565: } else {
1.166 kristaps 3566: oldch = n->val.sz;
3567: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.106 kristaps 3568: }
3569:
3570: /* Skip existing content in the destination buffer. */
1.166 kristaps 3571: c = n->val.p + (int)oldch;
1.106 kristaps 3572:
3573: /* Append new content to the destination buffer. */
1.164 kristaps 3574: i = 0;
3575: while (i < (int)stringsz) {
1.106 kristaps 3576: /*
3577: * Rudimentary roff copy mode:
3578: * Handle escaped backslashes.
3579: */
1.164 kristaps 3580: if ('\\' == string[i] && '\\' == string[i + 1])
3581: i++;
3582: *c++ = string[i++];
1.106 kristaps 3583: }
1.94 kristaps 3584:
1.106 kristaps 3585: /* Append terminating bytes. */
1.193 schwarze 3586: if (1 < append)
1.106 kristaps 3587: *c++ = '\n';
1.163 kristaps 3588:
1.106 kristaps 3589: *c = '\0';
1.166 kristaps 3590: n->val.sz = (int)(c - n->val.p);
1.92 schwarze 3591: }
3592:
1.94 kristaps 3593: static const char *
1.325 schwarze 3594: roff_getstrn(struct roff *r, const char *name, size_t len,
1.315 schwarze 3595: int *deftype)
1.92 schwarze 3596: {
1.315 schwarze 3597: const struct roffkv *n;
1.325 schwarze 3598: int found, i;
1.315 schwarze 3599: enum roff_tok tok;
3600:
1.325 schwarze 3601: found = 0;
3602: for (n = r->strtab; n != NULL; n = n->next) {
3603: if (strncmp(name, n->key.p, len) != 0 ||
3604: n->key.p[len] != '\0' || n->val.p == NULL)
3605: continue;
3606: if (*deftype & ROFFDEF_USER) {
3607: *deftype = ROFFDEF_USER;
3608: return n->val.p;
3609: } else {
3610: found = 1;
3611: break;
3612: }
3613: }
3614: for (n = r->rentab; n != NULL; n = n->next) {
3615: if (strncmp(name, n->key.p, len) != 0 ||
3616: n->key.p[len] != '\0' || n->val.p == NULL)
3617: continue;
3618: if (*deftype & ROFFDEF_REN) {
3619: *deftype = ROFFDEF_REN;
3620: return n->val.p;
3621: } else {
3622: found = 1;
3623: break;
1.315 schwarze 3624: }
3625: }
1.325 schwarze 3626: for (i = 0; i < PREDEFS_MAX; i++) {
3627: if (strncmp(name, predefs[i].name, len) != 0 ||
3628: predefs[i].name[len] != '\0')
3629: continue;
3630: if (*deftype & ROFFDEF_PRE) {
3631: *deftype = ROFFDEF_PRE;
3632: return predefs[i].str;
3633: } else {
3634: found = 1;
3635: break;
1.315 schwarze 3636: }
3637: }
1.325 schwarze 3638: if (r->man->macroset != MACROSET_MAN) {
3639: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
3640: if (strncmp(name, roff_name[tok], len) != 0 ||
3641: roff_name[tok][len] != '\0')
3642: continue;
3643: if (*deftype & ROFFDEF_STD) {
3644: *deftype = ROFFDEF_STD;
3645: return NULL;
3646: } else {
3647: found = 1;
3648: break;
1.315 schwarze 3649: }
3650: }
3651: }
1.325 schwarze 3652: if (r->man->macroset != MACROSET_MDOC) {
3653: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
3654: if (strncmp(name, roff_name[tok], len) != 0 ||
3655: roff_name[tok][len] != '\0')
3656: continue;
3657: if (*deftype & ROFFDEF_STD) {
3658: *deftype = ROFFDEF_STD;
3659: return NULL;
3660: } else {
3661: found = 1;
3662: break;
1.315 schwarze 3663: }
3664: }
1.325 schwarze 3665: }
3666:
3667: if (found == 0 && *deftype != ROFFDEF_ANY) {
3668: if (*deftype & ROFFDEF_REN) {
3669: /*
3670: * This might still be a request,
3671: * so do not treat it as undefined yet.
3672: */
3673: *deftype = ROFFDEF_UNDEF;
3674: return NULL;
1.315 schwarze 3675: }
1.325 schwarze 3676:
3677: /* Using an undefined string defines it to be empty. */
3678:
3679: roff_setstrn(&r->strtab, name, len, "", 0, 0);
3680: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.315 schwarze 3681: }
1.325 schwarze 3682:
1.315 schwarze 3683: *deftype = 0;
1.277 schwarze 3684: return NULL;
1.92 schwarze 3685: }
3686:
1.94 kristaps 3687: static void
1.167 kristaps 3688: roff_freestr(struct roffkv *r)
1.92 schwarze 3689: {
1.166 kristaps 3690: struct roffkv *n, *nn;
1.92 schwarze 3691:
1.167 kristaps 3692: for (n = r; n; n = nn) {
1.166 kristaps 3693: free(n->key.p);
3694: free(n->val.p);
1.92 schwarze 3695: nn = n->next;
3696: free(n);
3697: }
1.114 kristaps 3698: }
1.266 schwarze 3699:
3700: /* --- accessors and utility functions ------------------------------------ */
1.164 kristaps 3701:
3702: /*
3703: * Duplicate an input string, making the appropriate character
3704: * conversations (as stipulated by `tr') along the way.
3705: * Returns a heap-allocated string with all the replacements made.
3706: */
3707: char *
3708: roff_strdup(const struct roff *r, const char *p)
3709: {
1.166 kristaps 3710: const struct roffkv *cp;
1.164 kristaps 3711: char *res;
3712: const char *pp;
3713: size_t ssz, sz;
3714: enum mandoc_esc esc;
3715:
1.167 kristaps 3716: if (NULL == r->xmbtab && NULL == r->xtab)
1.277 schwarze 3717: return mandoc_strdup(p);
1.164 kristaps 3718: else if ('\0' == *p)
1.277 schwarze 3719: return mandoc_strdup("");
1.164 kristaps 3720:
3721: /*
3722: * Step through each character looking for term matches
3723: * (remember that a `tr' can be invoked with an escape, which is
3724: * a glyph but the escape is multi-character).
3725: * We only do this if the character hash has been initialised
3726: * and the string is >0 length.
3727: */
3728:
3729: res = NULL;
3730: ssz = 0;
3731:
3732: while ('\0' != *p) {
1.289 schwarze 3733: assert((unsigned int)*p < 128);
3734: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.167 kristaps 3735: sz = r->xtab[(int)*p].sz;
3736: res = mandoc_realloc(res, ssz + sz + 1);
3737: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3738: ssz += sz;
3739: p++;
3740: continue;
3741: } else if ('\\' != *p) {
3742: res = mandoc_realloc(res, ssz + 2);
3743: res[ssz++] = *p++;
3744: continue;
3745: }
3746:
1.164 kristaps 3747: /* Search for term matches. */
1.167 kristaps 3748: for (cp = r->xmbtab; cp; cp = cp->next)
1.166 kristaps 3749: if (0 == strncmp(p, cp->key.p, cp->key.sz))
1.164 kristaps 3750: break;
3751:
3752: if (NULL != cp) {
3753: /*
3754: * A match has been found.
3755: * Append the match to the array and move
3756: * forward by its keysize.
3757: */
1.207 schwarze 3758: res = mandoc_realloc(res,
3759: ssz + cp->val.sz + 1);
1.166 kristaps 3760: memcpy(res + ssz, cp->val.p, cp->val.sz);
3761: ssz += cp->val.sz;
3762: p += (int)cp->key.sz;
1.164 kristaps 3763: continue;
3764: }
3765:
1.167 kristaps 3766: /*
3767: * Handle escapes carefully: we need to copy
3768: * over just the escape itself, or else we might
3769: * do replacements within the escape itself.
3770: * Make sure to pass along the bogus string.
3771: */
3772: pp = p++;
3773: esc = mandoc_escape(&p, NULL, NULL);
3774: if (ESCAPE_ERROR == esc) {
3775: sz = strlen(pp);
1.164 kristaps 3776: res = mandoc_realloc(res, ssz + sz + 1);
3777: memcpy(res + ssz, pp, sz);
1.167 kristaps 3778: break;
1.164 kristaps 3779: }
1.207 schwarze 3780: /*
3781: * We bail out on bad escapes.
1.167 kristaps 3782: * No need to warn: we already did so when
3783: * roff_res() was called.
3784: */
3785: sz = (int)(p - pp);
3786: res = mandoc_realloc(res, ssz + sz + 1);
3787: memcpy(res + ssz, pp, sz);
3788: ssz += sz;
1.164 kristaps 3789: }
3790:
3791: res[(int)ssz] = '\0';
1.277 schwarze 3792: return res;
1.227 schwarze 3793: }
3794:
3795: int
3796: roff_getformat(const struct roff *r)
3797: {
3798:
1.277 schwarze 3799: return r->format;
1.174 kristaps 3800: }
3801:
3802: /*
1.207 schwarze 3803: * Find out whether a line is a macro line or not.
1.174 kristaps 3804: * If it is, adjust the current position and return one; if it isn't,
3805: * return zero and don't change the current position.
3806: * If the control character has been set with `.cc', then let that grain
3807: * precedence.
3808: * This is slighly contrary to groff, where using the non-breaking
3809: * control character when `cc' has been invoked will cause the
3810: * non-breaking macro contents to be printed verbatim.
3811: */
3812: int
3813: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
3814: {
3815: int pos;
3816:
3817: pos = *ppos;
3818:
1.303 schwarze 3819: if (r->control != '\0' && cp[pos] == r->control)
1.174 kristaps 3820: pos++;
1.303 schwarze 3821: else if (r->control != '\0')
1.277 schwarze 3822: return 0;
1.174 kristaps 3823: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
3824: pos += 2;
3825: else if ('.' == cp[pos] || '\'' == cp[pos])
3826: pos++;
3827: else
1.277 schwarze 3828: return 0;
1.174 kristaps 3829:
3830: while (' ' == cp[pos] || '\t' == cp[pos])
3831: pos++;
3832:
3833: *ppos = pos;
1.277 schwarze 3834: return 1;
1.74 kristaps 3835: }
CVSweb