Annotation of mandoc/roff.c, Revision 1.379
1.379 ! schwarze 1: /* $Id: roff.c,v 1.378 2021/08/10 12:55:04 schwarze Exp $ */
1.1 kristaps 2: /*
1.372 schwarze 3: * Copyright (c) 2010-2015, 2017-2020 Ingo Schwarze <schwarze@openbsd.org>
1.267 schwarze 4: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
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.
1.372 schwarze 17: *
18: * Implementation of the roff(7) parser for mandoc(1).
1.1 kristaps 19: */
1.66 kristaps 20: #include "config.h"
1.225 schwarze 21:
22: #include <sys/types.h>
1.30 kristaps 23:
1.67 kristaps 24: #include <assert.h>
1.85 kristaps 25: #include <ctype.h>
1.245 schwarze 26: #include <limits.h>
1.295 schwarze 27: #include <stddef.h>
28: #include <stdint.h>
1.178 schwarze 29: #include <stdio.h>
1.1 kristaps 30: #include <stdlib.h>
1.67 kristaps 31: #include <string.h>
1.1 kristaps 32:
1.201 schwarze 33: #include "mandoc_aux.h"
1.295 schwarze 34: #include "mandoc_ohash.h"
1.345 schwarze 35: #include "mandoc.h"
1.265 schwarze 36: #include "roff.h"
1.349 schwarze 37: #include "mandoc_parse.h"
1.226 schwarze 38: #include "libmandoc.h"
1.266 schwarze 39: #include "roff_int.h"
1.346 schwarze 40: #include "tbl_parse.h"
1.347 schwarze 41: #include "eqn_parse.h"
1.82 kristaps 42:
1.355 schwarze 43: /*
44: * ASCII_ESC is used to signal from roff_getarg() to roff_expand()
45: * that an escape sequence resulted from copy-in processing and
46: * needs to be checked or interpolated. As it is used nowhere
47: * else, it is defined here rather than in a header file.
48: */
49: #define ASCII_ESC 27
50:
1.170 schwarze 51: /* Maximum number of string expansions per line, to break infinite loops. */
52: #define EXPAND_LIMIT 1000
53:
1.315 schwarze 54: /* Types of definitions of macros and strings. */
55: #define ROFFDEF_USER (1 << 1) /* User-defined. */
56: #define ROFFDEF_PRE (1 << 2) /* Predefined. */
57: #define ROFFDEF_REN (1 << 3) /* Renamed standard macro. */
58: #define ROFFDEF_STD (1 << 4) /* mdoc(7) or man(7) macro. */
59: #define ROFFDEF_ANY (ROFFDEF_USER | ROFFDEF_PRE | \
60: ROFFDEF_REN | ROFFDEF_STD)
1.325 schwarze 61: #define ROFFDEF_UNDEF (1 << 5) /* Completely undefined. */
1.315 schwarze 62:
1.266 schwarze 63: /* --- data types --------------------------------------------------------- */
64:
1.147 kristaps 65: /*
1.167 kristaps 66: * An incredibly-simple string buffer.
67: */
1.94 kristaps 68: struct roffstr {
1.167 kristaps 69: char *p; /* nil-terminated buffer */
70: size_t sz; /* saved strlen(p) */
1.166 kristaps 71: };
72:
73: /*
1.167 kristaps 74: * A key-value roffstr pair as part of a singly-linked list.
1.166 kristaps 75: */
76: struct roffkv {
77: struct roffstr key;
78: struct roffstr val;
79: struct roffkv *next; /* next in list */
1.94 kristaps 80: };
81:
1.180 schwarze 82: /*
83: * A single number register as part of a singly-linked list.
84: */
85: struct roffreg {
86: struct roffstr key;
1.181 schwarze 87: int val;
1.327 schwarze 88: int step;
1.180 schwarze 89: struct roffreg *next;
90: };
91:
1.295 schwarze 92: /*
93: * Association of request and macro names with token IDs.
94: */
95: struct roffreq {
96: enum roff_tok tok;
97: char name[];
98: };
99:
1.339 schwarze 100: /*
101: * A macro processing context.
102: * More than one is needed when macro calls are nested.
103: */
104: struct mctx {
105: char **argv;
106: int argc;
107: int argsz;
108: };
109:
1.67 kristaps 110: struct roff {
1.296 schwarze 111: struct roff_man *man; /* mdoc or man parser */
1.67 kristaps 112: struct roffnode *last; /* leaf of stack */
1.339 schwarze 113: struct mctx *mstack; /* stack of macro contexts */
1.223 schwarze 114: int *rstack; /* stack of inverted `ie' values */
1.295 schwarze 115: struct ohash *reqtab; /* request lookup table */
1.180 schwarze 116: struct roffreg *regtab; /* number registers */
1.166 kristaps 117: struct roffkv *strtab; /* user-defined strings & macros */
1.306 schwarze 118: struct roffkv *rentab; /* renamed strings & macros */
1.167 kristaps 119: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
120: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.106 kristaps 121: const char *current_string; /* value of last called user macro */
1.118 kristaps 122: struct tbl_node *first_tbl; /* first table parsed */
123: struct tbl_node *last_tbl; /* last table parsed */
124: struct tbl_node *tbl; /* current table being parsed */
1.319 schwarze 125: struct eqn_node *last_eqn; /* equation parser */
126: struct eqn_node *eqn; /* active equation parser */
1.230 schwarze 127: int eqn_inline; /* current equation is inline */
1.223 schwarze 128: int options; /* parse options */
1.339 schwarze 129: int mstacksz; /* current size of mstack */
130: int mstackpos; /* position in mstack */
1.223 schwarze 131: int rstacksz; /* current size limit of rstack */
132: int rstackpos; /* position in rstack */
1.227 schwarze 133: int format; /* current file in mdoc or man format */
1.223 schwarze 134: char control; /* control character */
1.303 schwarze 135: char escape; /* escape character */
1.79 kristaps 136: };
137:
1.364 schwarze 138: /*
139: * A macro definition, condition, or ignored block.
140: */
1.67 kristaps 141: struct roffnode {
1.294 schwarze 142: enum roff_tok tok; /* type of node */
1.67 kristaps 143: struct roffnode *parent; /* up one in stack */
144: int line; /* parse line */
145: int col; /* parse col */
1.106 kristaps 146: char *name; /* node name, e.g. macro name */
1.364 schwarze 147: char *end; /* custom end macro of the block */
148: int endspan; /* scope to: 1=eol 2=next line -1=\} */
149: int rule; /* content is: 1=evaluated 0=skipped */
1.67 kristaps 150: };
151:
152: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.294 schwarze 153: enum roff_tok tok, /* tok of macro */ \
1.238 schwarze 154: struct buf *buf, /* input buffer */ \
1.67 kristaps 155: int ln, /* parse line */ \
1.75 kristaps 156: int ppos, /* original pos in buffer */ \
157: int pos, /* current pos in buffer */ \
1.74 kristaps 158: int *offs /* reset offset of buffer data */
1.67 kristaps 159:
1.340 schwarze 160: typedef int (*roffproc)(ROFF_ARGS);
1.67 kristaps 161:
162: struct roffmac {
1.79 kristaps 163: roffproc proc; /* process new macro */
164: roffproc text; /* process as child text of macro */
165: roffproc sub; /* process as child of macro */
166: int flags;
167: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.67 kristaps 168: };
169:
1.141 kristaps 170: struct predef {
171: const char *name; /* predefined input name */
172: const char *str; /* replacement symbol */
173: };
174:
175: #define PREDEF(__name, __str) \
176: { (__name), (__str) },
177:
1.266 schwarze 178: /* --- function prototypes ------------------------------------------------ */
179:
1.340 schwarze 180: static int roffnode_cleanscope(struct roff *);
181: static int roffnode_pop(struct roff *);
1.294 schwarze 182: static void roffnode_push(struct roff *, enum roff_tok,
1.155 kristaps 183: const char *, int, int);
1.346 schwarze 184: static void roff_addtbl(struct roff_man *, int, struct tbl_node *);
1.340 schwarze 185: static int roff_als(ROFF_ARGS);
186: static int roff_block(ROFF_ARGS);
187: static int roff_block_text(ROFF_ARGS);
188: static int roff_block_sub(ROFF_ARGS);
1.364 schwarze 189: static int roff_break(ROFF_ARGS);
1.340 schwarze 190: static int roff_cblock(ROFF_ARGS);
191: static int roff_cc(ROFF_ARGS);
192: static int roff_ccond(struct roff *, int, int);
1.341 schwarze 193: static int roff_char(ROFF_ARGS);
1.340 schwarze 194: static int roff_cond(ROFF_ARGS);
1.375 schwarze 195: static int roff_cond_checkend(ROFF_ARGS);
1.340 schwarze 196: static int roff_cond_text(ROFF_ARGS);
197: static int roff_cond_sub(ROFF_ARGS);
198: static int roff_ds(ROFF_ARGS);
199: static int roff_ec(ROFF_ARGS);
200: static int roff_eo(ROFF_ARGS);
201: static int roff_eqndelim(struct roff *, struct buf *, int);
1.372 schwarze 202: static int roff_evalcond(struct roff *, int, char *, int *);
1.234 kristaps 203: static int roff_evalnum(struct roff *, int,
204: const char *, int *, int *, int);
205: static int roff_evalpar(struct roff *, int,
1.261 schwarze 206: const char *, int *, int *, int);
1.198 schwarze 207: static int roff_evalstrcond(const char *, int *);
1.355 schwarze 208: static int roff_expand(struct roff *, struct buf *,
209: int, int, char);
1.155 kristaps 210: static void roff_free1(struct roff *);
1.180 schwarze 211: static void roff_freereg(struct roffreg *);
1.167 kristaps 212: static void roff_freestr(struct roffkv *);
1.212 schwarze 213: static size_t roff_getname(struct roff *, char **, int, int);
1.261 schwarze 214: static int roff_getnum(const char *, int *, int *, int);
1.184 schwarze 215: static int roff_getop(const char *, int *, char *);
1.327 schwarze 216: static int roff_getregn(struct roff *,
217: const char *, size_t, char);
1.273 schwarze 218: static int roff_getregro(const struct roff *,
219: const char *name);
1.325 schwarze 220: static const char *roff_getstrn(struct roff *,
1.315 schwarze 221: const char *, size_t, int *);
1.271 schwarze 222: static int roff_hasregn(const struct roff *,
223: const char *, size_t);
1.340 schwarze 224: static int roff_insec(ROFF_ARGS);
225: static int roff_it(ROFF_ARGS);
226: static int roff_line_ignore(ROFF_ARGS);
1.265 schwarze 227: static void roff_man_alloc1(struct roff_man *);
228: static void roff_man_free1(struct roff_man *);
1.340 schwarze 229: static int roff_manyarg(ROFF_ARGS);
1.358 schwarze 230: static int roff_noarg(ROFF_ARGS);
1.340 schwarze 231: static int roff_nop(ROFF_ARGS);
232: static int roff_nr(ROFF_ARGS);
233: static int roff_onearg(ROFF_ARGS);
1.294 schwarze 234: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.214 schwarze 235: int, int);
1.340 schwarze 236: static int roff_parsetext(struct roff *, struct buf *,
1.305 schwarze 237: int, int *);
1.340 schwarze 238: static int roff_renamed(ROFF_ARGS);
239: static int roff_return(ROFF_ARGS);
240: static int roff_rm(ROFF_ARGS);
241: static int roff_rn(ROFF_ARGS);
242: static int roff_rr(ROFF_ARGS);
1.326 schwarze 243: static void roff_setregn(struct roff *, const char *,
1.327 schwarze 244: size_t, int, char, int);
1.94 kristaps 245: static void roff_setstr(struct roff *,
1.106 kristaps 246: const char *, const char *, int);
1.207 schwarze 247: static void roff_setstrn(struct roffkv **, const char *,
1.164 kristaps 248: size_t, const char *, size_t, int);
1.340 schwarze 249: static int roff_shift(ROFF_ARGS);
250: static int roff_so(ROFF_ARGS);
251: static int roff_tr(ROFF_ARGS);
252: static int roff_Dd(ROFF_ARGS);
253: static int roff_TE(ROFF_ARGS);
254: static int roff_TS(ROFF_ARGS);
255: static int roff_EQ(ROFF_ARGS);
256: static int roff_EN(ROFF_ARGS);
257: static int roff_T_(ROFF_ARGS);
258: static int roff_unsupp(ROFF_ARGS);
259: static int roff_userdef(ROFF_ARGS);
1.67 kristaps 260:
1.266 schwarze 261: /* --- constant data ------------------------------------------------------ */
262:
1.261 schwarze 263: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
264: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
265:
1.294 schwarze 266: const char *__roff_name[MAN_MAX + 1] = {
1.358 schwarze 267: "br", "ce", "fi", "ft",
268: "ll", "mc", "nf",
269: "po", "rj", "sp",
1.312 schwarze 270: "ta", "ti", NULL,
1.294 schwarze 271: "ab", "ad", "af", "aln",
272: "als", "am", "am1", "ami",
273: "ami1", "as", "as1", "asciify",
274: "backtrace", "bd", "bleedat", "blm",
275: "box", "boxa", "bp", "BP",
276: "break", "breakchar", "brnl", "brp",
1.305 schwarze 277: "brpnl", "c2", "cc",
1.294 schwarze 278: "cf", "cflags", "ch", "char",
279: "chop", "class", "close", "CL",
280: "color", "composite", "continue", "cp",
281: "cropat", "cs", "cu", "da",
282: "dch", "Dd", "de", "de1",
283: "defcolor", "dei", "dei1", "device",
284: "devicem", "di", "do", "ds",
285: "ds1", "dwh", "dt", "ec",
286: "ecr", "ecs", "el", "em",
287: "EN", "eo", "EP", "EQ",
288: "errprint", "ev", "evc", "ex",
289: "fallback", "fam", "fc", "fchar",
290: "fcolor", "fdeferlig", "feature", "fkern",
291: "fl", "flig", "fp", "fps",
292: "fschar", "fspacewidth", "fspecial", "ftr",
293: "fzoom", "gcolor", "hc", "hcode",
294: "hidechar", "hla", "hlm", "hpf",
295: "hpfa", "hpfcode", "hw", "hy",
296: "hylang", "hylen", "hym", "hypp",
297: "hys", "ie", "if", "ig",
298: "index", "it", "itc", "IX",
299: "kern", "kernafter", "kernbefore", "kernpair",
300: "lc", "lc_ctype", "lds", "length",
301: "letadj", "lf", "lg", "lhang",
302: "linetabs", "lnr", "lnrf", "lpfx",
1.304 schwarze 303: "ls", "lsm", "lt",
1.294 schwarze 304: "mediasize", "minss", "mk", "mso",
305: "na", "ne", "nh", "nhychar",
306: "nm", "nn", "nop", "nr",
307: "nrf", "nroff", "ns", "nx",
308: "open", "opena", "os", "output",
309: "padj", "papersize", "pc", "pev",
310: "pi", "PI", "pl", "pm",
1.312 schwarze 311: "pn", "pnr", "ps",
1.294 schwarze 312: "psbb", "pshape", "pso", "ptr",
313: "pvs", "rchar", "rd", "recursionlimit",
1.309 schwarze 314: "return", "rfschar", "rhang",
1.294 schwarze 315: "rm", "rn", "rnn", "rr",
316: "rs", "rt", "schar", "sentchar",
317: "shc", "shift", "sizes", "so",
318: "spacewidth", "special", "spreadwarn", "ss",
319: "sty", "substring", "sv", "sy",
1.300 schwarze 320: "T&", "tc", "TE",
1.301 schwarze 321: "TH", "tkf", "tl",
1.294 schwarze 322: "tm", "tm1", "tmc", "tr",
323: "track", "transchar", "trf", "trimat",
324: "trin", "trnt", "troff", "TS",
325: "uf", "ul", "unformat", "unwatch",
326: "unwatchn", "vpt", "vs", "warn",
327: "warnscale", "watch", "watchlength", "watchn",
328: "wh", "while", "write", "writec",
329: "writem", "xflag", ".", NULL,
1.306 schwarze 330: NULL, "text",
1.294 schwarze 331: "Dd", "Dt", "Os", "Sh",
332: "Ss", "Pp", "D1", "Dl",
333: "Bd", "Ed", "Bl", "El",
334: "It", "Ad", "An", "Ap",
335: "Ar", "Cd", "Cm", "Dv",
336: "Er", "Ev", "Ex", "Fa",
337: "Fd", "Fl", "Fn", "Ft",
338: "Ic", "In", "Li", "Nd",
339: "Nm", "Op", "Ot", "Pa",
340: "Rv", "St", "Va", "Vt",
341: "Xr", "%A", "%B", "%D",
342: "%I", "%J", "%N", "%O",
343: "%P", "%R", "%T", "%V",
344: "Ac", "Ao", "Aq", "At",
345: "Bc", "Bf", "Bo", "Bq",
346: "Bsx", "Bx", "Db", "Dc",
347: "Do", "Dq", "Ec", "Ef",
348: "Em", "Eo", "Fx", "Ms",
349: "No", "Ns", "Nx", "Ox",
350: "Pc", "Pf", "Po", "Pq",
351: "Qc", "Ql", "Qo", "Qq",
352: "Re", "Rs", "Sc", "So",
353: "Sq", "Sm", "Sx", "Sy",
354: "Tn", "Ux", "Xc", "Xo",
355: "Fo", "Fc", "Oo", "Oc",
356: "Bk", "Ek", "Bt", "Hf",
357: "Fr", "Ud", "Lb", "Lp",
358: "Lk", "Mt", "Brq", "Bro",
359: "Brc", "%C", "Es", "En",
1.299 schwarze 360: "Dx", "%Q", "%U", "Ta",
1.369 schwarze 361: "Tg", NULL,
1.294 schwarze 362: "TH", "SH", "SS", "TP",
1.332 schwarze 363: "TQ",
1.294 schwarze 364: "LP", "PP", "P", "IP",
365: "HP", "SM", "SB", "BI",
366: "IB", "BR", "RB", "R",
367: "B", "I", "IR", "RI",
368: "RE", "RS", "DT", "UC",
1.297 schwarze 369: "PD", "AT", "in",
1.333 schwarze 370: "SY", "YS", "OP",
371: "EX", "EE", "UR",
1.317 schwarze 372: "UE", "MT", "ME", NULL
1.294 schwarze 373: };
374: const char *const *roff_name = __roff_name;
375:
376: static struct roffmac roffs[TOKEN_NONE] = {
1.358 schwarze 377: { roff_noarg, NULL, NULL, 0 }, /* br */
1.305 schwarze 378: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.358 schwarze 379: { roff_noarg, NULL, NULL, 0 }, /* fi */
1.297 schwarze 380: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.298 schwarze 381: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.304 schwarze 382: { roff_onearg, NULL, NULL, 0 }, /* mc */
1.358 schwarze 383: { roff_noarg, NULL, NULL, 0 }, /* nf */
1.312 schwarze 384: { roff_onearg, NULL, NULL, 0 }, /* po */
1.309 schwarze 385: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.299 schwarze 386: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.300 schwarze 387: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.301 schwarze 388: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.296 schwarze 389: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.295 schwarze 390: { roff_unsupp, NULL, NULL, 0 }, /* ab */
391: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
392: { roff_line_ignore, NULL, NULL, 0 }, /* af */
393: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.311 schwarze 394: { roff_als, NULL, NULL, 0 }, /* als */
1.295 schwarze 395: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
396: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
397: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
398: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
399: { roff_ds, NULL, NULL, 0 }, /* as */
400: { roff_ds, NULL, NULL, 0 }, /* as1 */
401: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
402: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
403: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
404: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
405: { roff_unsupp, NULL, NULL, 0 }, /* blm */
406: { roff_unsupp, NULL, NULL, 0 }, /* box */
407: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
408: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
409: { roff_unsupp, NULL, NULL, 0 }, /* BP */
1.364 schwarze 410: { roff_break, NULL, NULL, 0 }, /* break */
1.295 schwarze 411: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
412: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.358 schwarze 413: { roff_noarg, NULL, NULL, 0 }, /* brp */
1.295 schwarze 414: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
415: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
416: { roff_cc, NULL, NULL, 0 }, /* cc */
417: { roff_insec, NULL, NULL, 0 }, /* cf */
418: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
419: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
1.341 schwarze 420: { roff_char, NULL, NULL, 0 }, /* char */
1.295 schwarze 421: { roff_unsupp, NULL, NULL, 0 }, /* chop */
422: { roff_line_ignore, NULL, NULL, 0 }, /* class */
423: { roff_insec, NULL, NULL, 0 }, /* close */
424: { roff_unsupp, NULL, NULL, 0 }, /* CL */
425: { roff_line_ignore, NULL, NULL, 0 }, /* color */
426: { roff_unsupp, NULL, NULL, 0 }, /* composite */
427: { roff_unsupp, NULL, NULL, 0 }, /* continue */
428: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
429: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
430: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
431: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
432: { roff_unsupp, NULL, NULL, 0 }, /* da */
433: { roff_unsupp, NULL, NULL, 0 }, /* dch */
434: { roff_Dd, NULL, NULL, 0 }, /* Dd */
435: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
436: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
437: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
438: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
439: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
440: { roff_unsupp, NULL, NULL, 0 }, /* device */
441: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
442: { roff_unsupp, NULL, NULL, 0 }, /* di */
443: { roff_unsupp, NULL, NULL, 0 }, /* do */
444: { roff_ds, NULL, NULL, 0 }, /* ds */
445: { roff_ds, NULL, NULL, 0 }, /* ds1 */
446: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
447: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.303 schwarze 448: { roff_ec, NULL, NULL, 0 }, /* ec */
1.295 schwarze 449: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
450: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
451: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
452: { roff_unsupp, NULL, NULL, 0 }, /* em */
453: { roff_EN, NULL, NULL, 0 }, /* EN */
1.303 schwarze 454: { roff_eo, NULL, NULL, 0 }, /* eo */
1.295 schwarze 455: { roff_unsupp, NULL, NULL, 0 }, /* EP */
456: { roff_EQ, NULL, NULL, 0 }, /* EQ */
457: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
458: { roff_unsupp, NULL, NULL, 0 }, /* ev */
459: { roff_unsupp, NULL, NULL, 0 }, /* evc */
460: { roff_unsupp, NULL, NULL, 0 }, /* ex */
461: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
462: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
463: { roff_unsupp, NULL, NULL, 0 }, /* fc */
464: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
465: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
466: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
467: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
468: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
469: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
470: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
471: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
472: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
473: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
474: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
475: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
476: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
477: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
478: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
479: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
480: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
481: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
482: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
483: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
484: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
485: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
486: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
487: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
488: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
489: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
490: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
491: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
492: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
493: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
494: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
495: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
496: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
497: { roff_unsupp, NULL, NULL, 0 }, /* index */
498: { roff_it, NULL, NULL, 0 }, /* it */
499: { roff_unsupp, NULL, NULL, 0 }, /* itc */
500: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
501: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
502: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
503: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
504: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
505: { roff_unsupp, NULL, NULL, 0 }, /* lc */
506: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
507: { roff_unsupp, NULL, NULL, 0 }, /* lds */
508: { roff_unsupp, NULL, NULL, 0 }, /* length */
509: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
510: { roff_insec, NULL, NULL, 0 }, /* lf */
511: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
512: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
513: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
514: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
515: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
516: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
517: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
518: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
519: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
520: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
521: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
522: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
523: { roff_insec, NULL, NULL, 0 }, /* mso */
524: { roff_line_ignore, NULL, NULL, 0 }, /* na */
525: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
526: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
527: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
528: { roff_unsupp, NULL, NULL, 0 }, /* nm */
529: { roff_unsupp, NULL, NULL, 0 }, /* nn */
1.330 schwarze 530: { roff_nop, NULL, NULL, 0 }, /* nop */
1.295 schwarze 531: { roff_nr, NULL, NULL, 0 }, /* nr */
532: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
533: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
534: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
535: { roff_insec, NULL, NULL, 0 }, /* nx */
536: { roff_insec, NULL, NULL, 0 }, /* open */
537: { roff_insec, NULL, NULL, 0 }, /* opena */
538: { roff_line_ignore, NULL, NULL, 0 }, /* os */
539: { roff_unsupp, NULL, NULL, 0 }, /* output */
540: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
541: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
542: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
543: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
544: { roff_insec, NULL, NULL, 0 }, /* pi */
545: { roff_unsupp, NULL, NULL, 0 }, /* PI */
546: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
547: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
548: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
549: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
550: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
551: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
552: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
553: { roff_insec, NULL, NULL, 0 }, /* pso */
554: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
555: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
556: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
557: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
558: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
1.339 schwarze 559: { roff_return, NULL, NULL, 0 }, /* return */
1.295 schwarze 560: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
561: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
562: { roff_rm, NULL, NULL, 0 }, /* rm */
1.306 schwarze 563: { roff_rn, NULL, NULL, 0 }, /* rn */
1.295 schwarze 564: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
565: { roff_rr, NULL, NULL, 0 }, /* rr */
566: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
567: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
568: { roff_unsupp, NULL, NULL, 0 }, /* schar */
569: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
570: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
1.339 schwarze 571: { roff_shift, NULL, NULL, 0 }, /* shift */
1.295 schwarze 572: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
573: { roff_so, NULL, NULL, 0 }, /* so */
574: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
575: { roff_line_ignore, NULL, NULL, 0 }, /* special */
576: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
577: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
578: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
579: { roff_unsupp, NULL, NULL, 0 }, /* substring */
580: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
581: { roff_insec, NULL, NULL, 0 }, /* sy */
582: { roff_T_, NULL, NULL, 0 }, /* T& */
583: { roff_unsupp, NULL, NULL, 0 }, /* tc */
584: { roff_TE, NULL, NULL, 0 }, /* TE */
1.315 schwarze 585: { roff_Dd, NULL, NULL, 0 }, /* TH */
1.295 schwarze 586: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
587: { roff_unsupp, NULL, NULL, 0 }, /* tl */
588: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
589: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
590: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
591: { roff_tr, NULL, NULL, 0 }, /* tr */
592: { roff_line_ignore, NULL, NULL, 0 }, /* track */
593: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
594: { roff_insec, NULL, NULL, 0 }, /* trf */
595: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
596: { roff_unsupp, NULL, NULL, 0 }, /* trin */
597: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
598: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
599: { roff_TS, NULL, NULL, 0 }, /* TS */
600: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
601: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
602: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
603: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
604: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
605: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
606: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
607: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
608: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
609: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
610: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
611: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
612: { roff_unsupp, NULL, NULL, 0 }, /* wh */
1.340 schwarze 613: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /*while*/
1.295 schwarze 614: { roff_insec, NULL, NULL, 0 }, /* write */
615: { roff_insec, NULL, NULL, 0 }, /* writec */
616: { roff_insec, NULL, NULL, 0 }, /* writem */
617: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
618: { roff_cblock, NULL, NULL, 0 }, /* . */
1.306 schwarze 619: { roff_renamed, NULL, NULL, 0 },
1.295 schwarze 620: { roff_userdef, NULL, NULL, 0 }
1.67 kristaps 621: };
622:
1.141 kristaps 623: /* Array of injected predefined strings. */
624: #define PREDEFS_MAX 38
625: static const struct predef predefs[PREDEFS_MAX] = {
626: #include "predefs.in"
627: };
628:
1.305 schwarze 629: static int roffce_lines; /* number of input lines to center */
630: static struct roff_node *roffce_node; /* active request */
1.178 schwarze 631: static int roffit_lines; /* number of lines to delay */
632: static char *roffit_macro; /* nil-terminated macro line */
633:
1.207 schwarze 634:
1.266 schwarze 635: /* --- request table ------------------------------------------------------ */
636:
1.295 schwarze 637: struct ohash *
638: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.85 kristaps 639: {
1.295 schwarze 640: struct ohash *htab;
641: struct roffreq *req;
642: enum roff_tok tok;
643: size_t sz;
644: unsigned int slot;
1.85 kristaps 645:
1.295 schwarze 646: htab = mandoc_malloc(sizeof(*htab));
647: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.85 kristaps 648:
1.295 schwarze 649: for (tok = mintok; tok < maxtok; tok++) {
1.296 schwarze 650: if (roff_name[tok] == NULL)
651: continue;
1.295 schwarze 652: sz = strlen(roff_name[tok]);
653: req = mandoc_malloc(sizeof(*req) + sz + 1);
654: req->tok = tok;
655: memcpy(req->name, roff_name[tok], sz + 1);
656: slot = ohash_qlookup(htab, req->name);
657: ohash_insert(htab, slot, req);
1.85 kristaps 658: }
1.295 schwarze 659: return htab;
1.85 kristaps 660: }
661:
1.295 schwarze 662: void
663: roffhash_free(struct ohash *htab)
1.67 kristaps 664: {
1.295 schwarze 665: struct roffreq *req;
666: unsigned int slot;
1.67 kristaps 667:
1.295 schwarze 668: if (htab == NULL)
669: return;
670: for (req = ohash_first(htab, &slot); req != NULL;
671: req = ohash_next(htab, &slot))
672: free(req);
673: ohash_delete(htab);
674: free(htab);
675: }
676:
677: enum roff_tok
678: roffhash_find(struct ohash *htab, const char *name, size_t sz)
679: {
680: struct roffreq *req;
681: const char *end;
682:
683: if (sz) {
684: end = name + sz;
685: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
686: } else
687: req = ohash_find(htab, ohash_qlookup(htab, name));
688: return req == NULL ? TOKEN_NONE : req->tok;
1.67 kristaps 689: }
690:
1.266 schwarze 691: /* --- stack of request blocks -------------------------------------------- */
692:
1.67 kristaps 693: /*
694: * Pop the current node off of the stack of roff instructions currently
1.364 schwarze 695: * pending. Return 1 if it is a loop or 0 otherwise.
1.67 kristaps 696: */
1.340 schwarze 697: static int
1.67 kristaps 698: roffnode_pop(struct roff *r)
699: {
700: struct roffnode *p;
1.340 schwarze 701: int inloop;
1.67 kristaps 702:
1.207 schwarze 703: p = r->last;
1.340 schwarze 704: inloop = p->tok == ROFF_while;
705: r->last = p->parent;
1.106 kristaps 706: free(p->name);
707: free(p->end);
1.67 kristaps 708: free(p);
1.340 schwarze 709: return inloop;
1.67 kristaps 710: }
711:
712: /*
713: * Push a roff node onto the instruction stack. This must later be
714: * removed with roffnode_pop().
715: */
1.98 schwarze 716: static void
1.294 schwarze 717: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.106 kristaps 718: int line, int col)
1.67 kristaps 719: {
720: struct roffnode *p;
721:
1.98 schwarze 722: p = mandoc_calloc(1, sizeof(struct roffnode));
1.67 kristaps 723: p->tok = tok;
1.106 kristaps 724: if (name)
725: p->name = mandoc_strdup(name);
1.67 kristaps 726: p->parent = r->last;
727: p->line = line;
728: p->col = col;
1.198 schwarze 729: p->rule = p->parent ? p->parent->rule : 0;
1.67 kristaps 730:
731: r->last = p;
732: }
733:
1.266 schwarze 734: /* --- roff parser state data management ---------------------------------- */
735:
1.67 kristaps 736: static void
737: roff_free1(struct roff *r)
738: {
1.167 kristaps 739: int i;
1.67 kristaps 740:
1.346 schwarze 741: tbl_free(r->first_tbl);
1.113 kristaps 742: r->first_tbl = r->last_tbl = r->tbl = NULL;
743:
1.347 schwarze 744: eqn_free(r->last_eqn);
1.319 schwarze 745: r->last_eqn = r->eqn = NULL;
1.125 kristaps 746:
1.339 schwarze 747: while (r->mstackpos >= 0)
748: roff_userret(r);
749:
1.67 kristaps 750: while (r->last)
751: roffnode_pop(r);
1.109 kristaps 752:
1.223 schwarze 753: free (r->rstack);
754: r->rstack = NULL;
755: r->rstacksz = 0;
756: r->rstackpos = -1;
757:
758: roff_freereg(r->regtab);
759: r->regtab = NULL;
760:
1.167 kristaps 761: roff_freestr(r->strtab);
1.306 schwarze 762: roff_freestr(r->rentab);
1.167 kristaps 763: roff_freestr(r->xmbtab);
1.306 schwarze 764: r->strtab = r->rentab = r->xmbtab = NULL;
1.167 kristaps 765:
766: if (r->xtab)
767: for (i = 0; i < 128; i++)
768: free(r->xtab[i].p);
769: free(r->xtab);
770: r->xtab = NULL;
1.67 kristaps 771: }
772:
773: void
774: roff_reset(struct roff *r)
775: {
776: roff_free1(r);
1.367 schwarze 777: r->options |= MPARSE_COMMENT;
1.227 schwarze 778: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.303 schwarze 779: r->control = '\0';
780: r->escape = '\\';
1.307 schwarze 781: roffce_lines = 0;
782: roffce_node = NULL;
783: roffit_lines = 0;
784: roffit_macro = NULL;
1.67 kristaps 785: }
786:
787: void
788: roff_free(struct roff *r)
789: {
1.366 schwarze 790: int i;
1.339 schwarze 791:
1.67 kristaps 792: roff_free1(r);
1.339 schwarze 793: for (i = 0; i < r->mstacksz; i++)
794: free(r->mstack[i].argv);
795: free(r->mstack);
1.295 schwarze 796: roffhash_free(r->reqtab);
1.67 kristaps 797: free(r);
798: }
799:
800: struct roff *
1.351 schwarze 801: roff_alloc(int options)
1.67 kristaps 802: {
803: struct roff *r;
804:
1.98 schwarze 805: r = mandoc_calloc(1, sizeof(struct roff));
1.328 schwarze 806: r->reqtab = roffhash_alloc(0, ROFF_RENAMED);
1.367 schwarze 807: r->options = options | MPARSE_COMMENT;
1.227 schwarze 808: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.339 schwarze 809: r->mstackpos = -1;
1.82 kristaps 810: r->rstackpos = -1;
1.303 schwarze 811: r->escape = '\\';
1.277 schwarze 812: return r;
1.265 schwarze 813: }
814:
1.266 schwarze 815: /* --- syntax tree state data management ---------------------------------- */
816:
1.265 schwarze 817: static void
818: roff_man_free1(struct roff_man *man)
819: {
1.356 schwarze 820: if (man->meta.first != NULL)
821: roff_node_delete(man, man->meta.first);
1.265 schwarze 822: free(man->meta.msec);
823: free(man->meta.vol);
824: free(man->meta.os);
825: free(man->meta.arch);
826: free(man->meta.title);
827: free(man->meta.name);
828: free(man->meta.date);
1.356 schwarze 829: free(man->meta.sodest);
1.265 schwarze 830: }
831:
1.357 schwarze 832: void
833: roff_state_reset(struct roff_man *man)
834: {
835: man->last = man->meta.first;
836: man->last_es = NULL;
837: man->flags = 0;
838: man->lastsec = man->lastnamed = SEC_NONE;
839: man->next = ROFF_NEXT_CHILD;
840: roff_setreg(man->roff, "nS", 0, '=');
841: }
842:
1.265 schwarze 843: static void
844: roff_man_alloc1(struct roff_man *man)
845: {
846: memset(&man->meta, 0, sizeof(man->meta));
1.356 schwarze 847: man->meta.first = mandoc_calloc(1, sizeof(*man->meta.first));
848: man->meta.first->type = ROFFT_ROOT;
849: man->meta.macroset = MACROSET_NONE;
1.357 schwarze 850: roff_state_reset(man);
1.265 schwarze 851: }
852:
853: void
854: roff_man_reset(struct roff_man *man)
855: {
856: roff_man_free1(man);
857: roff_man_alloc1(man);
858: }
859:
860: void
861: roff_man_free(struct roff_man *man)
862: {
863: roff_man_free1(man);
864: free(man);
865: }
866:
867: struct roff_man *
1.351 schwarze 868: roff_man_alloc(struct roff *roff, const char *os_s, int quick)
1.265 schwarze 869: {
870: struct roff_man *man;
871:
872: man = mandoc_calloc(1, sizeof(*man));
873: man->roff = roff;
1.316 schwarze 874: man->os_s = os_s;
1.265 schwarze 875: man->quick = quick;
876: roff_man_alloc1(man);
1.296 schwarze 877: roff->man = man;
1.277 schwarze 878: return man;
1.67 kristaps 879: }
880:
1.266 schwarze 881: /* --- syntax tree handling ----------------------------------------------- */
882:
883: struct roff_node *
884: roff_node_alloc(struct roff_man *man, int line, int pos,
885: enum roff_type type, int tok)
886: {
887: struct roff_node *n;
888:
889: n = mandoc_calloc(1, sizeof(*n));
890: n->line = line;
891: n->pos = pos;
892: n->tok = tok;
893: n->type = type;
894: n->sec = man->lastsec;
895:
896: if (man->flags & MDOC_SYNOPSIS)
1.285 schwarze 897: n->flags |= NODE_SYNPRETTY;
1.266 schwarze 898: else
1.285 schwarze 899: n->flags &= ~NODE_SYNPRETTY;
1.360 schwarze 900: if ((man->flags & (ROFF_NOFILL | ROFF_NONOFILL)) == ROFF_NOFILL)
1.359 schwarze 901: n->flags |= NODE_NOFILL;
902: else
903: n->flags &= ~NODE_NOFILL;
1.266 schwarze 904: if (man->flags & MDOC_NEWLINE)
1.285 schwarze 905: n->flags |= NODE_LINE;
1.266 schwarze 906: man->flags &= ~MDOC_NEWLINE;
907:
1.277 schwarze 908: return n;
1.266 schwarze 909: }
910:
911: void
912: roff_node_append(struct roff_man *man, struct roff_node *n)
913: {
914:
915: switch (man->next) {
916: case ROFF_NEXT_SIBLING:
1.281 schwarze 917: if (man->last->next != NULL) {
918: n->next = man->last->next;
919: man->last->next->prev = n;
920: } else
921: man->last->parent->last = n;
1.266 schwarze 922: man->last->next = n;
923: n->prev = man->last;
924: n->parent = man->last->parent;
925: break;
926: case ROFF_NEXT_CHILD:
1.287 schwarze 927: if (man->last->child != NULL) {
928: n->next = man->last->child;
929: man->last->child->prev = n;
930: } else
931: man->last->last = n;
1.266 schwarze 932: man->last->child = n;
933: n->parent = man->last;
934: break;
935: default:
936: abort();
937: }
1.282 schwarze 938: man->last = n;
1.266 schwarze 939:
940: switch (n->type) {
941: case ROFFT_HEAD:
942: n->parent->head = n;
943: break;
944: case ROFFT_BODY:
1.282 schwarze 945: if (n->end != ENDBODY_NOT)
946: return;
1.266 schwarze 947: n->parent->body = n;
948: break;
949: case ROFFT_TAIL:
950: n->parent->tail = n;
951: break;
952: default:
1.282 schwarze 953: return;
1.266 schwarze 954: }
1.282 schwarze 955:
956: /*
957: * Copy over the normalised-data pointer of our parent. Not
958: * everybody has one, but copying a null pointer is fine.
959: */
960:
961: n->norm = n->parent->norm;
962: assert(n->parent->type == ROFFT_BLOCK);
1.266 schwarze 963: }
964:
1.267 schwarze 965: void
966: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
967: {
968: struct roff_node *n;
969:
970: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
971: n->string = roff_strdup(man->roff, word);
972: roff_node_append(man, n);
1.286 schwarze 973: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 974: man->next = ROFF_NEXT_SIBLING;
975: }
976:
977: void
978: roff_word_append(struct roff_man *man, const char *word)
979: {
980: struct roff_node *n;
981: char *addstr, *newstr;
982:
983: n = man->last;
984: addstr = roff_strdup(man->roff, word);
985: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
986: free(addstr);
987: free(n->string);
988: n->string = newstr;
989: man->next = ROFF_NEXT_SIBLING;
1.268 schwarze 990: }
991:
992: void
993: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
994: {
995: struct roff_node *n;
996:
997: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
998: roff_node_append(man, n);
999: man->next = ROFF_NEXT_CHILD;
1000: }
1001:
1002: struct roff_node *
1003: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
1004: {
1005: struct roff_node *n;
1006:
1007: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
1008: roff_node_append(man, n);
1009: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1010: return n;
1.267 schwarze 1011: }
1012:
1.266 schwarze 1013: struct roff_node *
1014: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
1015: {
1016: struct roff_node *n;
1017:
1018: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
1019: roff_node_append(man, n);
1020: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1021: return n;
1.266 schwarze 1022: }
1023:
1024: struct roff_node *
1025: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1026: {
1027: struct roff_node *n;
1028:
1029: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1030: roff_node_append(man, n);
1031: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1032: return n;
1.267 schwarze 1033: }
1034:
1.321 schwarze 1035: static void
1.346 schwarze 1036: roff_addtbl(struct roff_man *man, int line, struct tbl_node *tbl)
1.267 schwarze 1037: {
1038: struct roff_node *n;
1.346 schwarze 1039: struct tbl_span *span;
1.267 schwarze 1040:
1.356 schwarze 1041: if (man->meta.macroset == MACROSET_MAN)
1.302 schwarze 1042: man_breakscope(man, ROFF_TS);
1.321 schwarze 1043: while ((span = tbl_span(tbl)) != NULL) {
1.346 schwarze 1044: n = roff_node_alloc(man, line, 0, ROFFT_TBL, TOKEN_NONE);
1.321 schwarze 1045: n->span = span;
1046: roff_node_append(man, n);
1047: n->flags |= NODE_VALID | NODE_ENDED;
1048: man->next = ROFF_NEXT_SIBLING;
1049: }
1.266 schwarze 1050: }
1051:
1052: void
1053: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1054: {
1055:
1056: /* Adjust siblings. */
1057:
1058: if (n->prev)
1059: n->prev->next = n->next;
1060: if (n->next)
1061: n->next->prev = n->prev;
1062:
1063: /* Adjust parent. */
1064:
1065: if (n->parent != NULL) {
1066: if (n->parent->child == n)
1067: n->parent->child = n->next;
1068: if (n->parent->last == n)
1069: n->parent->last = n->prev;
1070: }
1071:
1072: /* Adjust parse point. */
1073:
1074: if (man == NULL)
1075: return;
1076: if (man->last == n) {
1077: if (n->prev == NULL) {
1078: man->last = n->parent;
1079: man->next = ROFF_NEXT_CHILD;
1080: } else {
1081: man->last = n->prev;
1082: man->next = ROFF_NEXT_SIBLING;
1083: }
1084: }
1.356 schwarze 1085: if (man->meta.first == n)
1086: man->meta.first = NULL;
1.344 schwarze 1087: }
1088:
1089: void
1090: roff_node_relink(struct roff_man *man, struct roff_node *n)
1091: {
1092: roff_node_unlink(man, n);
1093: n->prev = n->next = NULL;
1094: roff_node_append(man, n);
1.266 schwarze 1095: }
1096:
1097: void
1098: roff_node_free(struct roff_node *n)
1099: {
1100:
1101: if (n->args != NULL)
1102: mdoc_argv_free(n->args);
1103: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1104: free(n->norm);
1.347 schwarze 1105: eqn_box_free(n->eqn);
1.266 schwarze 1106: free(n->string);
1.374 schwarze 1107: free(n->tag);
1.266 schwarze 1108: free(n);
1109: }
1110:
1111: void
1112: roff_node_delete(struct roff_man *man, struct roff_node *n)
1113: {
1114:
1115: while (n->child != NULL)
1116: roff_node_delete(man, n->child);
1117: roff_node_unlink(man, n);
1118: roff_node_free(n);
1.370 schwarze 1119: }
1120:
1121: int
1122: roff_node_transparent(struct roff_node *n)
1123: {
1124: if (n == NULL)
1125: return 0;
1126: if (n->type == ROFFT_COMMENT || n->flags & NODE_NOPRT)
1127: return 1;
1.373 schwarze 1128: return roff_tok_transparent(n->tok);
1129: }
1130:
1131: int
1132: roff_tok_transparent(enum roff_tok tok)
1133: {
1134: switch (tok) {
1.370 schwarze 1135: case ROFF_ft:
1136: case ROFF_ll:
1137: case ROFF_mc:
1138: case ROFF_po:
1139: case ROFF_ta:
1140: case MDOC_Db:
1141: case MDOC_Es:
1142: case MDOC_Sm:
1143: case MDOC_Tg:
1144: case MAN_DT:
1145: case MAN_UC:
1146: case MAN_PD:
1147: case MAN_AT:
1148: return 1;
1149: default:
1150: return 0;
1151: }
1152: }
1153:
1154: struct roff_node *
1155: roff_node_child(struct roff_node *n)
1156: {
1157: for (n = n->child; roff_node_transparent(n); n = n->next)
1158: continue;
1159: return n;
1160: }
1161:
1162: struct roff_node *
1163: roff_node_prev(struct roff_node *n)
1164: {
1165: do {
1166: n = n->prev;
1167: } while (roff_node_transparent(n));
1168: return n;
1169: }
1170:
1171: struct roff_node *
1172: roff_node_next(struct roff_node *n)
1173: {
1174: do {
1175: n = n->next;
1176: } while (roff_node_transparent(n));
1177: return n;
1.269 schwarze 1178: }
1179:
1180: void
1181: deroff(char **dest, const struct roff_node *n)
1182: {
1183: char *cp;
1184: size_t sz;
1185:
1.371 schwarze 1186: if (n->string == NULL) {
1.269 schwarze 1187: for (n = n->child; n != NULL; n = n->next)
1188: deroff(dest, n);
1189: return;
1190: }
1191:
1.288 schwarze 1192: /* Skip leading whitespace. */
1.269 schwarze 1193:
1.288 schwarze 1194: for (cp = n->string; *cp != '\0'; cp++) {
1.289 schwarze 1195: if (cp[0] == '\\' && cp[1] != '\0' &&
1196: strchr(" %&0^|~", cp[1]) != NULL)
1.269 schwarze 1197: cp++;
1.288 schwarze 1198: else if ( ! isspace((unsigned char)*cp))
1.269 schwarze 1199: break;
1200: }
1201:
1.289 schwarze 1202: /* Skip trailing backslash. */
1203:
1204: sz = strlen(cp);
1.290 schwarze 1205: if (sz > 0 && cp[sz - 1] == '\\')
1.289 schwarze 1206: sz--;
1207:
1.269 schwarze 1208: /* Skip trailing whitespace. */
1209:
1.289 schwarze 1210: for (; sz; sz--)
1.269 schwarze 1211: if ( ! isspace((unsigned char)cp[sz-1]))
1212: break;
1213:
1214: /* Skip empty strings. */
1215:
1216: if (sz == 0)
1217: return;
1218:
1219: if (*dest == NULL) {
1220: *dest = mandoc_strndup(cp, sz);
1221: return;
1222: }
1223:
1224: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1225: free(*dest);
1226: *dest = cp;
1.266 schwarze 1227: }
1228:
1229: /* --- main functions of the roff parser ---------------------------------- */
1230:
1.94 kristaps 1231: /*
1.355 schwarze 1232: * In the current line, expand escape sequences that produce parsable
1233: * input text. Also check the syntax of the remaining escape sequences,
1234: * which typically produce output glyphs or change formatter state.
1.154 kristaps 1235: */
1.340 schwarze 1236: static int
1.355 schwarze 1237: roff_expand(struct roff *r, struct buf *buf, int ln, int pos, char newesc)
1.94 kristaps 1238: {
1.339 schwarze 1239: struct mctx *ctx; /* current macro call context */
1.208 schwarze 1240: char ubuf[24]; /* buffer to print the number */
1.328 schwarze 1241: struct roff_node *n; /* used for header comments */
1.205 schwarze 1242: const char *start; /* start of the string to process */
1.209 schwarze 1243: char *stesc; /* start of an escape sequence ('\\') */
1.352 schwarze 1244: const char *esct; /* type of esccape sequence */
1.328 schwarze 1245: char *ep; /* end of comment string */
1.108 schwarze 1246: const char *stnam; /* start of the name, after "[(*" */
1247: const char *cp; /* end of the name, e.g. before ']' */
1248: const char *res; /* the string to be substituted */
1.238 schwarze 1249: char *nbuf; /* new buffer to copy buf->buf to */
1.181 schwarze 1250: size_t maxl; /* expected length of the escape name */
1251: size_t naml; /* actual length of the escape name */
1.339 schwarze 1252: size_t asz; /* length of the replacement */
1253: size_t rsz; /* length of the rest of the string */
1.237 schwarze 1254: int inaml; /* length returned from mandoc_escape() */
1.181 schwarze 1255: int expand_count; /* to avoid infinite loops */
1.206 schwarze 1256: int npos; /* position in numeric expression */
1.218 schwarze 1257: int arg_complete; /* argument not interrupted by eol */
1.339 schwarze 1258: int quote_args; /* true for \\$@, false for \\$* */
1.303 schwarze 1259: int done; /* no more input available */
1.315 schwarze 1260: int deftype; /* type of definition to paste */
1.323 schwarze 1261: int rcsid; /* kind of RCS id seen */
1.352 schwarze 1262: enum mandocerr err; /* for escape sequence problems */
1.327 schwarze 1263: char sign; /* increment number register */
1.206 schwarze 1264: char term; /* character terminating the escape */
1.94 kristaps 1265:
1.303 schwarze 1266: /* Search forward for comments. */
1267:
1268: done = 0;
1269: start = buf->buf + pos;
1270: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1.355 schwarze 1271: if (stesc[0] != newesc || stesc[1] == '\0')
1.303 schwarze 1272: continue;
1273: stesc++;
1274: if (*stesc != '"' && *stesc != '#')
1275: continue;
1.313 schwarze 1276:
1277: /* Comment found, look for RCS id. */
1278:
1.323 schwarze 1279: rcsid = 0;
1.313 schwarze 1280: if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
1.323 schwarze 1281: rcsid = 1 << MANDOC_OS_OPENBSD;
1.313 schwarze 1282: cp += 8;
1283: } else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
1.323 schwarze 1284: rcsid = 1 << MANDOC_OS_NETBSD;
1.313 schwarze 1285: cp += 7;
1286: }
1287: if (cp != NULL &&
1288: isalnum((unsigned char)*cp) == 0 &&
1.314 schwarze 1289: strchr(cp, '$') != NULL) {
1.323 schwarze 1290: if (r->man->meta.rcsids & rcsid)
1.350 schwarze 1291: mandoc_msg(MANDOCERR_RCS_REP, ln,
1292: (int)(stesc - buf->buf) + 1,
1293: "%s", stesc + 1);
1.323 schwarze 1294: r->man->meta.rcsids |= rcsid;
1.314 schwarze 1295: }
1.313 schwarze 1296:
1297: /* Handle trailing whitespace. */
1298:
1.328 schwarze 1299: ep = strchr(stesc--, '\0') - 1;
1300: if (*ep == '\n') {
1.303 schwarze 1301: done = 1;
1.328 schwarze 1302: ep--;
1.303 schwarze 1303: }
1.328 schwarze 1304: if (*ep == ' ' || *ep == '\t')
1.350 schwarze 1305: mandoc_msg(MANDOCERR_SPACE_EOL,
1306: ln, (int)(ep - buf->buf), NULL);
1.328 schwarze 1307:
1308: /*
1309: * Save comments preceding the title macro
1310: * in the syntax tree.
1311: */
1312:
1.367 schwarze 1313: if (newesc != ASCII_ESC && r->options & MPARSE_COMMENT) {
1.328 schwarze 1314: while (*ep == ' ' || *ep == '\t')
1315: ep--;
1316: ep[1] = '\0';
1317: n = roff_node_alloc(r->man,
1318: ln, stesc + 1 - buf->buf,
1319: ROFFT_COMMENT, TOKEN_NONE);
1320: n->string = mandoc_strdup(stesc + 2);
1321: roff_node_append(r->man, n);
1322: n->flags |= NODE_VALID | NODE_ENDED;
1323: r->man->next = ROFF_NEXT_SIBLING;
1324: }
1325:
1.334 schwarze 1326: /* Line continuation with comment. */
1327:
1328: if (stesc[1] == '#') {
1329: *stesc = '\0';
1.340 schwarze 1330: return ROFF_IGN | ROFF_APPEND;
1.334 schwarze 1331: }
1332:
1333: /* Discard normal comments. */
1.328 schwarze 1334:
1.335 schwarze 1335: while (stesc > start && stesc[-1] == ' ' &&
1336: (stesc == start + 1 || stesc[-2] != '\\'))
1.303 schwarze 1337: stesc--;
1338: *stesc = '\0';
1339: break;
1340: }
1341: if (stesc == start)
1342: return ROFF_CONT;
1343: stesc--;
1344:
1345: /* Notice the end of the input. */
1346:
1347: if (*stesc == '\n') {
1348: *stesc-- = '\0';
1349: done = 1;
1350: }
1351:
1.170 schwarze 1352: expand_count = 0;
1.303 schwarze 1353: while (stesc >= start) {
1.355 schwarze 1354: if (*stesc != newesc) {
1.170 schwarze 1355:
1.355 schwarze 1356: /*
1357: * If we have a non-standard escape character,
1358: * escape literal backslashes because all
1359: * processing in subsequent functions uses
1360: * the standard escaping rules.
1361: */
1.205 schwarze 1362:
1.355 schwarze 1363: if (newesc != ASCII_ESC && *stesc == '\\') {
1.303 schwarze 1364: *stesc = '\0';
1365: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1366: buf->buf, stesc + 1) + 1;
1367: start = nbuf + pos;
1368: stesc = nbuf + (stesc - buf->buf);
1369: free(buf->buf);
1370: buf->buf = nbuf;
1371: }
1.355 schwarze 1372:
1373: /* Search backwards for the next escape. */
1374:
1.303 schwarze 1375: stesc--;
1.205 schwarze 1376: continue;
1.303 schwarze 1377: }
1.205 schwarze 1378:
1379: /* If it is escaped, skip it. */
1380:
1381: for (cp = stesc - 1; cp >= start; cp--)
1.303 schwarze 1382: if (*cp != r->escape)
1.205 schwarze 1383: break;
1384:
1.238 schwarze 1385: if ((stesc - cp) % 2 == 0) {
1.303 schwarze 1386: while (stesc > cp)
1387: *stesc-- = '\\';
1.205 schwarze 1388: continue;
1.303 schwarze 1389: } else if (stesc[1] != '\0') {
1390: *stesc = '\\';
1391: } else {
1392: *stesc-- = '\0';
1393: if (done)
1394: continue;
1395: else
1.340 schwarze 1396: return ROFF_IGN | ROFF_APPEND;
1.205 schwarze 1397: }
1.108 schwarze 1398:
1.206 schwarze 1399: /* Decide whether to expand or to check only. */
1.108 schwarze 1400:
1.206 schwarze 1401: term = '\0';
1.205 schwarze 1402: cp = stesc + 1;
1.352 schwarze 1403: if (*cp == 'E')
1404: cp++;
1405: esct = cp;
1406: switch (*esct) {
1.207 schwarze 1407: case '*':
1.339 schwarze 1408: case '$':
1.181 schwarze 1409: res = NULL;
1410: break;
1.207 schwarze 1411: case 'B':
1412: case 'w':
1.206 schwarze 1413: term = cp[1];
1414: /* FALLTHROUGH */
1.207 schwarze 1415: case 'n':
1.327 schwarze 1416: sign = cp[1];
1417: if (sign == '+' || sign == '-')
1418: cp++;
1.181 schwarze 1419: res = ubuf;
1420: break;
1421: default:
1.352 schwarze 1422: err = MANDOCERR_OK;
1423: switch(mandoc_escape(&cp, &stnam, &inaml)) {
1424: case ESCAPE_SPECIAL:
1425: if (mchars_spec2cp(stnam, inaml) >= 0)
1426: break;
1427: /* FALLTHROUGH */
1428: case ESCAPE_ERROR:
1429: err = MANDOCERR_ESC_BAD;
1430: break;
1431: case ESCAPE_UNDEF:
1432: err = MANDOCERR_ESC_UNDEF;
1433: break;
1434: case ESCAPE_UNSUPP:
1435: err = MANDOCERR_ESC_UNSUPP;
1436: break;
1437: default:
1438: break;
1439: }
1440: if (err != MANDOCERR_OK)
1441: mandoc_msg(err, ln, (int)(stesc - buf->buf),
1.219 schwarze 1442: "%.*s", (int)(cp - stesc), stesc);
1.303 schwarze 1443: stesc--;
1.205 schwarze 1444: continue;
1.152 kristaps 1445: }
1446:
1.205 schwarze 1447: if (EXPAND_LIMIT < ++expand_count) {
1.350 schwarze 1448: mandoc_msg(MANDOCERR_ROFFLOOP,
1.238 schwarze 1449: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1450: return ROFF_IGN;
1.205 schwarze 1451: }
1.108 schwarze 1452:
1453: /*
1454: * The third character decides the length
1.181 schwarze 1455: * of the name of the string or register.
1.108 schwarze 1456: * Save a pointer to the name.
1457: */
1458:
1.238 schwarze 1459: if (term == '\0') {
1.206 schwarze 1460: switch (*++cp) {
1.207 schwarze 1461: case '\0':
1.206 schwarze 1462: maxl = 0;
1463: break;
1.207 schwarze 1464: case '(':
1.206 schwarze 1465: cp++;
1466: maxl = 2;
1467: break;
1.207 schwarze 1468: case '[':
1.206 schwarze 1469: cp++;
1470: term = ']';
1471: maxl = 0;
1472: break;
1473: default:
1474: maxl = 1;
1475: break;
1476: }
1477: } else {
1478: cp += 2;
1.94 kristaps 1479: maxl = 0;
1480: }
1.108 schwarze 1481: stnam = cp;
1.94 kristaps 1482:
1.108 schwarze 1483: /* Advance to the end of the name. */
1.94 kristaps 1484:
1.253 schwarze 1485: naml = 0;
1.218 schwarze 1486: arg_complete = 1;
1.253 schwarze 1487: while (maxl == 0 || naml < maxl) {
1.238 schwarze 1488: if (*cp == '\0') {
1.350 schwarze 1489: mandoc_msg(MANDOCERR_ESC_BAD, ln,
1490: (int)(stesc - buf->buf), "%s", stesc);
1.218 schwarze 1491: arg_complete = 0;
1.206 schwarze 1492: break;
1.153 kristaps 1493: }
1.238 schwarze 1494: if (maxl == 0 && *cp == term) {
1.206 schwarze 1495: cp++;
1.253 schwarze 1496: break;
1497: }
1.352 schwarze 1498: if (*cp++ != '\\' || *esct != 'w') {
1.253 schwarze 1499: naml++;
1500: continue;
1501: }
1502: switch (mandoc_escape(&cp, NULL, NULL)) {
1503: case ESCAPE_SPECIAL:
1504: case ESCAPE_UNICODE:
1505: case ESCAPE_NUMBERED:
1.352 schwarze 1506: case ESCAPE_UNDEF:
1.253 schwarze 1507: case ESCAPE_OVERSTRIKE:
1508: naml++;
1509: break;
1510: default:
1.94 kristaps 1511: break;
1.206 schwarze 1512: }
1.94 kristaps 1513: }
1514:
1.108 schwarze 1515: /*
1516: * Retrieve the replacement string; if it is
1517: * undefined, resume searching for escapes.
1518: */
1519:
1.352 schwarze 1520: switch (*esct) {
1.207 schwarze 1521: case '*':
1.315 schwarze 1522: if (arg_complete) {
1523: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1524: res = roff_getstrn(r, stnam, naml, &deftype);
1.331 schwarze 1525:
1526: /*
1527: * If not overriden, let \*(.T
1528: * through to the formatters.
1529: */
1530:
1531: if (res == NULL && naml == 2 &&
1532: stnam[0] == '.' && stnam[1] == 'T') {
1533: roff_setstrn(&r->strtab,
1534: ".T", 2, NULL, 0, 0);
1535: stesc--;
1536: continue;
1537: }
1.315 schwarze 1538: }
1.206 schwarze 1539: break;
1.339 schwarze 1540: case '$':
1541: if (r->mstackpos < 0) {
1.350 schwarze 1542: mandoc_msg(MANDOCERR_ARG_UNDEF, ln,
1543: (int)(stesc - buf->buf), "%.3s", stesc);
1.339 schwarze 1544: break;
1545: }
1546: ctx = r->mstack + r->mstackpos;
1.352 schwarze 1547: npos = esct[1] - '1';
1.339 schwarze 1548: if (npos >= 0 && npos <= 8) {
1549: res = npos < ctx->argc ?
1550: ctx->argv[npos] : "";
1551: break;
1552: }
1.352 schwarze 1553: if (esct[1] == '*')
1.339 schwarze 1554: quote_args = 0;
1.352 schwarze 1555: else if (esct[1] == '@')
1.339 schwarze 1556: quote_args = 1;
1557: else {
1.350 schwarze 1558: mandoc_msg(MANDOCERR_ARG_NONUM, ln,
1559: (int)(stesc - buf->buf), "%.3s", stesc);
1.339 schwarze 1560: break;
1561: }
1562: asz = 0;
1563: for (npos = 0; npos < ctx->argc; npos++) {
1564: if (npos)
1565: asz++; /* blank */
1566: if (quote_args)
1567: asz += 2; /* quotes */
1568: asz += strlen(ctx->argv[npos]);
1569: }
1570: if (asz != 3) {
1571: rsz = buf->sz - (stesc - buf->buf) - 3;
1572: if (asz < 3)
1573: memmove(stesc + asz, stesc + 3, rsz);
1574: buf->sz += asz - 3;
1575: nbuf = mandoc_realloc(buf->buf, buf->sz);
1576: start = nbuf + pos;
1577: stesc = nbuf + (stesc - buf->buf);
1578: buf->buf = nbuf;
1579: if (asz > 3)
1580: memmove(stesc + asz, stesc + 3, rsz);
1581: }
1582: for (npos = 0; npos < ctx->argc; npos++) {
1583: if (npos)
1584: *stesc++ = ' ';
1585: if (quote_args)
1586: *stesc++ = '"';
1587: cp = ctx->argv[npos];
1588: while (*cp != '\0')
1589: *stesc++ = *cp++;
1590: if (quote_args)
1591: *stesc++ = '"';
1592: }
1593: continue;
1.207 schwarze 1594: case 'B':
1.206 schwarze 1595: npos = 0;
1.218 schwarze 1596: ubuf[0] = arg_complete &&
1.261 schwarze 1597: roff_evalnum(r, ln, stnam, &npos,
1598: NULL, ROFFNUM_SCALE) &&
1.218 schwarze 1599: stnam + npos + 1 == cp ? '1' : '0';
1.206 schwarze 1600: ubuf[1] = '\0';
1601: break;
1.207 schwarze 1602: case 'n':
1.218 schwarze 1603: if (arg_complete)
1604: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.327 schwarze 1605: roff_getregn(r, stnam, naml, sign));
1.218 schwarze 1606: else
1607: ubuf[0] = '\0';
1.206 schwarze 1608: break;
1.207 schwarze 1609: case 'w':
1.218 schwarze 1610: /* use even incomplete args */
1.208 schwarze 1611: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.206 schwarze 1612: 24 * (int)naml);
1613: break;
1614: }
1.94 kristaps 1615:
1.238 schwarze 1616: if (res == NULL) {
1.352 schwarze 1617: if (*esct == '*')
1.350 schwarze 1618: mandoc_msg(MANDOCERR_STR_UNDEF,
1619: ln, (int)(stesc - buf->buf),
1.339 schwarze 1620: "%.*s", (int)naml, stnam);
1.142 kristaps 1621: res = "";
1.246 schwarze 1622: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1.350 schwarze 1623: mandoc_msg(MANDOCERR_ROFFLOOP,
1.246 schwarze 1624: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1625: return ROFF_IGN;
1.94 kristaps 1626: }
1627:
1.108 schwarze 1628: /* Replace the escape sequence by the string. */
1629:
1.209 schwarze 1630: *stesc = '\0';
1.238 schwarze 1631: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1632: buf->buf, res, cp) + 1;
1.94 kristaps 1633:
1.205 schwarze 1634: /* Prepare for the next replacement. */
1.94 kristaps 1635:
1.205 schwarze 1636: start = nbuf + pos;
1.238 schwarze 1637: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1638: free(buf->buf);
1639: buf->buf = nbuf;
1.154 kristaps 1640: }
1.277 schwarze 1641: return ROFF_CONT;
1.154 kristaps 1642: }
1.353 schwarze 1643:
1644: /*
1645: * Parse a quoted or unquoted roff-style request or macro argument.
1646: * Return a pointer to the parsed argument, which is either the original
1647: * pointer or advanced by one byte in case the argument is quoted.
1648: * NUL-terminate the argument in place.
1649: * Collapse pairs of quotes inside quoted arguments.
1650: * Advance the argument pointer to the next argument,
1651: * or to the NUL byte terminating the argument line.
1652: */
1653: char *
1.355 schwarze 1654: roff_getarg(struct roff *r, char **cpp, int ln, int *pos)
1.353 schwarze 1655: {
1.355 schwarze 1656: struct buf buf;
1.366 schwarze 1657: char *cp, *start;
1.355 schwarze 1658: int newesc, pairs, quoted, white;
1.353 schwarze 1659:
1660: /* Quoting can only start with a new word. */
1661: start = *cpp;
1662: quoted = 0;
1663: if ('"' == *start) {
1664: quoted = 1;
1665: start++;
1666: }
1667:
1.355 schwarze 1668: newesc = pairs = white = 0;
1.353 schwarze 1669: for (cp = start; '\0' != *cp; cp++) {
1670:
1671: /*
1672: * Move the following text left
1673: * after quoted quotes and after "\\" and "\t".
1674: */
1675: if (pairs)
1676: cp[-pairs] = cp[0];
1677:
1678: if ('\\' == cp[0]) {
1679: /*
1680: * In copy mode, translate double to single
1681: * backslashes and backslash-t to literal tabs.
1682: */
1683: switch (cp[1]) {
1684: case 'a':
1685: case 't':
1.354 schwarze 1686: cp[-pairs] = '\t';
1.355 schwarze 1687: pairs++;
1688: cp++;
1689: break;
1.353 schwarze 1690: case '\\':
1.355 schwarze 1691: newesc = 1;
1692: cp[-pairs] = ASCII_ESC;
1.353 schwarze 1693: pairs++;
1694: cp++;
1695: break;
1696: case ' ':
1697: /* Skip escaped blanks. */
1698: if (0 == quoted)
1699: cp++;
1700: break;
1701: default:
1702: break;
1703: }
1704: } else if (0 == quoted) {
1705: if (' ' == cp[0]) {
1706: /* Unescaped blanks end unquoted args. */
1707: white = 1;
1708: break;
1709: }
1710: } else if ('"' == cp[0]) {
1711: if ('"' == cp[1]) {
1712: /* Quoted quotes collapse. */
1713: pairs++;
1714: cp++;
1715: } else {
1716: /* Unquoted quotes end quoted args. */
1717: quoted = 2;
1718: break;
1719: }
1720: }
1721: }
1722:
1723: /* Quoted argument without a closing quote. */
1724: if (1 == quoted)
1725: mandoc_msg(MANDOCERR_ARG_QUOTE, ln, *pos, NULL);
1726:
1727: /* NUL-terminate this argument and move to the next one. */
1728: if (pairs)
1729: cp[-pairs] = '\0';
1730: if ('\0' != *cp) {
1731: *cp++ = '\0';
1732: while (' ' == *cp)
1733: cp++;
1734: }
1735: *pos += (int)(cp - start) + (quoted ? 1 : 0);
1736: *cpp = cp;
1737:
1738: if ('\0' == *cp && (white || ' ' == cp[-1]))
1739: mandoc_msg(MANDOCERR_SPACE_EOL, ln, *pos, NULL);
1740:
1.355 schwarze 1741: start = mandoc_strdup(start);
1742: if (newesc == 0)
1743: return start;
1744:
1745: buf.buf = start;
1746: buf.sz = strlen(start) + 1;
1747: buf.next = NULL;
1748: if (roff_expand(r, &buf, ln, 0, ASCII_ESC) & ROFF_IGN) {
1749: free(buf.buf);
1750: buf.buf = mandoc_strdup("");
1751: }
1752: return buf.buf;
1.353 schwarze 1753: }
1754:
1.154 kristaps 1755:
1756: /*
1.275 schwarze 1757: * Process text streams.
1.154 kristaps 1758: */
1.340 schwarze 1759: static int
1.305 schwarze 1760: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.154 kristaps 1761: {
1762: size_t sz;
1763: const char *start;
1.178 schwarze 1764: char *p;
1765: int isz;
1.154 kristaps 1766: enum mandoc_esc esc;
1767:
1.275 schwarze 1768: /* Spring the input line trap. */
1769:
1770: if (roffit_lines == 1) {
1771: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1772: free(buf->buf);
1773: buf->buf = p;
1774: buf->sz = isz + 1;
1775: *offs = 0;
1776: free(roffit_macro);
1777: roffit_lines = 0;
1.277 schwarze 1778: return ROFF_REPARSE;
1.275 schwarze 1779: } else if (roffit_lines > 1)
1780: --roffit_lines;
1781:
1.305 schwarze 1782: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1783: if (roffce_lines < 1) {
1784: r->man->last = roffce_node;
1785: r->man->next = ROFF_NEXT_SIBLING;
1786: roffce_lines = 0;
1787: roffce_node = NULL;
1788: } else
1789: roffce_lines--;
1790: }
1791:
1.275 schwarze 1792: /* Convert all breakable hyphens into ASCII_HYPH. */
1793:
1.238 schwarze 1794: start = p = buf->buf + pos;
1.154 kristaps 1795:
1.238 schwarze 1796: while (*p != '\0') {
1.154 kristaps 1797: sz = strcspn(p, "-\\");
1798: p += sz;
1799:
1.238 schwarze 1800: if (*p == '\0')
1.159 kristaps 1801: break;
1802:
1.238 schwarze 1803: if (*p == '\\') {
1.154 kristaps 1804: /* Skip over escapes. */
1805: p++;
1.189 schwarze 1806: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.238 schwarze 1807: if (esc == ESCAPE_ERROR)
1.154 kristaps 1808: break;
1.264 schwarze 1809: while (*p == '-')
1810: p++;
1.155 kristaps 1811: continue;
1.159 kristaps 1812: } else if (p == start) {
1.158 kristaps 1813: p++;
1.155 kristaps 1814: continue;
1.158 kristaps 1815: }
1.155 kristaps 1816:
1.171 schwarze 1817: if (isalpha((unsigned char)p[-1]) &&
1818: isalpha((unsigned char)p[1]))
1.155 kristaps 1819: *p = ASCII_HYPH;
1820: p++;
1.94 kristaps 1821: }
1.277 schwarze 1822: return ROFF_CONT;
1.94 kristaps 1823: }
1824:
1.340 schwarze 1825: int
1.377 schwarze 1826: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs, size_t len)
1.67 kristaps 1827: {
1.294 schwarze 1828: enum roff_tok t;
1.340 schwarze 1829: int e;
1.238 schwarze 1830: int pos; /* parse point */
1.243 schwarze 1831: int spos; /* saved parse point for messages */
1.238 schwarze 1832: int ppos; /* original offset in buf->buf */
1833: int ctl; /* macro line (boolean) */
1834:
1835: ppos = pos = *offs;
1.377 schwarze 1836:
1837: if (len > 80 && r->tbl == NULL && r->eqn == NULL &&
1838: (r->man->flags & ROFF_NOFILL) == 0 &&
1839: strchr(" .\\", buf->buf[pos]) == NULL &&
1840: buf->buf[pos] != r->control &&
1841: strcspn(buf->buf, " ") < 80)
1842: mandoc_msg(MANDOCERR_TEXT_LONG, ln, (int)len - 1,
1843: "%.20s...", buf->buf + pos);
1.79 kristaps 1844:
1.230 schwarze 1845: /* Handle in-line equation delimiters. */
1846:
1.236 schwarze 1847: if (r->tbl == NULL &&
1848: r->last_eqn != NULL && r->last_eqn->delim &&
1.230 schwarze 1849: (r->eqn == NULL || r->eqn_inline)) {
1.238 schwarze 1850: e = roff_eqndelim(r, buf, pos);
1.230 schwarze 1851: if (e == ROFF_REPARSE)
1.277 schwarze 1852: return e;
1.230 schwarze 1853: assert(e == ROFF_CONT);
1854: }
1855:
1856: /* Expand some escape sequences. */
1.94 kristaps 1857:
1.355 schwarze 1858: e = roff_expand(r, buf, ln, pos, r->escape);
1.340 schwarze 1859: if ((e & ROFF_MASK) == ROFF_IGN)
1.277 schwarze 1860: return e;
1.238 schwarze 1861: assert(e == ROFF_CONT);
1.94 kristaps 1862:
1.238 schwarze 1863: ctl = roff_getcontrol(r, buf->buf, &pos);
1.130 kristaps 1864:
1.94 kristaps 1865: /*
1.79 kristaps 1866: * First, if a scope is open and we're not a macro, pass the
1.252 schwarze 1867: * text through the macro's filter.
1868: * Equations process all content themselves.
1869: * Tables process almost all content themselves, but we want
1870: * to warn about macros before passing it there.
1.79 kristaps 1871: */
1.74 kristaps 1872:
1.252 schwarze 1873: if (r->last != NULL && ! ctl) {
1.78 kristaps 1874: t = r->last->tok;
1.238 schwarze 1875: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.340 schwarze 1876: if ((e & ROFF_MASK) == ROFF_IGN)
1.277 schwarze 1877: return e;
1.340 schwarze 1878: e &= ~ROFF_MASK;
1879: } else
1880: e = ROFF_IGN;
1.319 schwarze 1881: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1882: eqn_read(r->eqn, buf->buf + ppos);
1.340 schwarze 1883: return e;
1.319 schwarze 1884: }
1.321 schwarze 1885: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1886: tbl_read(r->tbl, ln, buf->buf, ppos);
1.346 schwarze 1887: roff_addtbl(r->man, ln, r->tbl);
1.340 schwarze 1888: return e;
1.321 schwarze 1889: }
1.367 schwarze 1890: if ( ! ctl) {
1891: r->options &= ~MPARSE_COMMENT;
1.340 schwarze 1892: return roff_parsetext(r, buf, pos, offs) | e;
1.367 schwarze 1893: }
1.228 schwarze 1894:
1895: /* Skip empty request lines. */
1896:
1.238 schwarze 1897: if (buf->buf[pos] == '"') {
1.350 schwarze 1898: mandoc_msg(MANDOCERR_COMMENT_BAD, ln, pos, NULL);
1.277 schwarze 1899: return ROFF_IGN;
1.238 schwarze 1900: } else if (buf->buf[pos] == '\0')
1.277 schwarze 1901: return ROFF_IGN;
1.67 kristaps 1902:
1.79 kristaps 1903: /*
1904: * If a scope is open, go to the child handler for that macro,
1905: * as it may want to preprocess before doing anything with it.
1.125 kristaps 1906: * Don't do so if an equation is open.
1.79 kristaps 1907: */
1.78 kristaps 1908:
1.79 kristaps 1909: if (r->last) {
1910: t = r->last->tok;
1.277 schwarze 1911: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1912: }
1.78 kristaps 1913:
1.243 schwarze 1914: /* No scope is open. This is a new request or macro. */
1915:
1.367 schwarze 1916: r->options &= ~MPARSE_COMMENT;
1.243 schwarze 1917: spos = pos;
1918: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1919:
1920: /* Tables ignore most macros. */
1921:
1.308 schwarze 1922: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.309 schwarze 1923: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.350 schwarze 1924: mandoc_msg(MANDOCERR_TBLMACRO,
1925: ln, pos, "%s", buf->buf + spos);
1.308 schwarze 1926: if (t != TOKEN_NONE)
1.277 schwarze 1927: return ROFF_IGN;
1.257 schwarze 1928: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1929: pos++;
1.291 schwarze 1930: while (buf->buf[pos] == ' ')
1.257 schwarze 1931: pos++;
1.321 schwarze 1932: tbl_read(r->tbl, ln, buf->buf, pos);
1.346 schwarze 1933: roff_addtbl(r->man, ln, r->tbl);
1.321 schwarze 1934: return ROFF_IGN;
1.243 schwarze 1935: }
1936:
1.305 schwarze 1937: /* For now, let high level macros abort .ce mode. */
1938:
1939: if (ctl && roffce_node != NULL &&
1.324 schwarze 1940: (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
1941: t == ROFF_TH || t == ROFF_TS)) {
1.305 schwarze 1942: r->man->last = roffce_node;
1943: r->man->next = ROFF_NEXT_SIBLING;
1944: roffce_lines = 0;
1945: roffce_node = NULL;
1946: }
1947:
1.79 kristaps 1948: /*
1.243 schwarze 1949: * This is neither a roff request nor a user-defined macro.
1950: * Let the standard macro set parsers handle it.
1.79 kristaps 1951: */
1.67 kristaps 1952:
1.294 schwarze 1953: if (t == TOKEN_NONE)
1.277 schwarze 1954: return ROFF_CONT;
1.243 schwarze 1955:
1956: /* Execute a roff request or a user defined macro. */
1.67 kristaps 1957:
1.296 schwarze 1958: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.74 kristaps 1959: }
1960:
1.339 schwarze 1961: /*
1962: * Internal interface function to tell the roff parser that execution
1963: * of the current macro ended. This is required because macro
1964: * definitions usually do not end with a .return request.
1965: */
1966: void
1967: roff_userret(struct roff *r)
1968: {
1969: struct mctx *ctx;
1970: int i;
1971:
1972: assert(r->mstackpos >= 0);
1973: ctx = r->mstack + r->mstackpos;
1974: for (i = 0; i < ctx->argc; i++)
1975: free(ctx->argv[i]);
1976: ctx->argc = 0;
1977: r->mstackpos--;
1978: }
1979:
1.117 kristaps 1980: void
1.74 kristaps 1981: roff_endparse(struct roff *r)
1982: {
1.321 schwarze 1983: if (r->last != NULL)
1.350 schwarze 1984: mandoc_msg(MANDOCERR_BLK_NOEND, r->last->line,
1985: r->last->col, "%s", roff_name[r->last->tok]);
1.117 kristaps 1986:
1.321 schwarze 1987: if (r->eqn != NULL) {
1.350 schwarze 1988: mandoc_msg(MANDOCERR_BLK_NOEND,
1.319 schwarze 1989: r->eqn->node->line, r->eqn->node->pos, "EQ");
1990: eqn_parse(r->eqn);
1991: r->eqn = NULL;
1.125 kristaps 1992: }
1993:
1.321 schwarze 1994: if (r->tbl != NULL) {
1.346 schwarze 1995: tbl_end(r->tbl, 1);
1.321 schwarze 1996: r->tbl = NULL;
1.117 kristaps 1997: }
1.67 kristaps 1998: }
1999:
2000: /*
2001: * Parse a roff node's type from the input buffer. This must be in the
2002: * form of ".foo xxx" in the usual way.
2003: */
1.294 schwarze 2004: static enum roff_tok
1.214 schwarze 2005: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.67 kristaps 2006: {
1.214 schwarze 2007: char *cp;
1.106 kristaps 2008: const char *mac;
2009: size_t maclen;
1.315 schwarze 2010: int deftype;
1.294 schwarze 2011: enum roff_tok t;
1.67 kristaps 2012:
1.214 schwarze 2013: cp = buf + *pos;
2014:
2015: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.294 schwarze 2016: return TOKEN_NONE;
1.67 kristaps 2017:
1.214 schwarze 2018: mac = cp;
2019: maclen = roff_getname(r, &cp, ln, ppos);
1.67 kristaps 2020:
1.315 schwarze 2021: deftype = ROFFDEF_USER | ROFFDEF_REN;
2022: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
2023: switch (deftype) {
2024: case ROFFDEF_USER:
2025: t = ROFF_USERDEF;
2026: break;
2027: case ROFFDEF_REN:
2028: t = ROFF_RENAMED;
2029: break;
2030: default:
2031: t = roffhash_find(r->reqtab, mac, maclen);
2032: break;
2033: }
1.294 schwarze 2034: if (t != TOKEN_NONE)
1.214 schwarze 2035: *pos = cp - buf;
1.325 schwarze 2036: else if (deftype == ROFFDEF_UNDEF) {
2037: /* Using an undefined macro defines it to be empty. */
2038: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
2039: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
2040: }
1.277 schwarze 2041: return t;
1.67 kristaps 2042: }
2043:
1.266 schwarze 2044: /* --- handling of request blocks ----------------------------------------- */
2045:
1.375 schwarze 2046: /*
2047: * Close a macro definition block or an "ignore" block.
2048: */
1.340 schwarze 2049: static int
1.76 kristaps 2050: roff_cblock(ROFF_ARGS)
1.67 kristaps 2051: {
1.375 schwarze 2052: int rr;
1.79 kristaps 2053:
1.238 schwarze 2054: if (r->last == NULL) {
1.350 schwarze 2055: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.277 schwarze 2056: return ROFF_IGN;
1.76 kristaps 2057: }
1.67 kristaps 2058:
1.81 kristaps 2059: switch (r->last->tok) {
1.207 schwarze 2060: case ROFF_am:
2061: case ROFF_ami:
2062: case ROFF_de:
2063: case ROFF_dei:
2064: case ROFF_ig:
1.81 kristaps 2065: break;
1.375 schwarze 2066: case ROFF_am1:
2067: case ROFF_de1:
2068: /* Remapped in roff_block(). */
2069: abort();
1.81 kristaps 2070: default:
1.350 schwarze 2071: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.277 schwarze 2072: return ROFF_IGN;
1.76 kristaps 2073: }
1.67 kristaps 2074:
1.375 schwarze 2075: roffnode_pop(r);
2076: roffnode_cleanscope(r);
2077:
2078: /*
2079: * If a conditional block with braces is still open,
2080: * check for "\}" block end markers.
2081: */
2082:
2083: if (r->last != NULL && r->last->endspan < 0) {
2084: rr = 1; /* If arguments follow "\}", warn about them. */
2085: roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
2086: }
2087:
1.238 schwarze 2088: if (buf->buf[pos] != '\0')
1.350 schwarze 2089: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.238 schwarze 2090: ".. %s", buf->buf + pos);
1.71 kristaps 2091:
1.277 schwarze 2092: return ROFF_IGN;
1.67 kristaps 2093: }
2094:
1.364 schwarze 2095: /*
2096: * Pop all nodes ending at the end of the current input line.
2097: * Return the number of loops ended.
2098: */
1.340 schwarze 2099: static int
1.76 kristaps 2100: roffnode_cleanscope(struct roff *r)
1.67 kristaps 2101: {
1.340 schwarze 2102: int inloop;
1.67 kristaps 2103:
1.340 schwarze 2104: inloop = 0;
1.375 schwarze 2105: while (r->last != NULL && r->last->endspan > 0) {
1.173 schwarze 2106: if (--r->last->endspan != 0)
1.76 kristaps 2107: break;
1.340 schwarze 2108: inloop += roffnode_pop(r);
1.76 kristaps 2109: }
1.340 schwarze 2110: return inloop;
1.67 kristaps 2111: }
2112:
1.364 schwarze 2113: /*
1.375 schwarze 2114: * Handle the closing "\}" of a conditional block.
1.364 schwarze 2115: * Apart from generating warnings, this only pops nodes.
2116: * Return the number of loops ended.
2117: */
1.340 schwarze 2118: static int
1.195 schwarze 2119: roff_ccond(struct roff *r, int ln, int ppos)
1.74 kristaps 2120: {
1.76 kristaps 2121: if (NULL == r->last) {
1.350 schwarze 2122: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 2123: return 0;
1.76 kristaps 2124: }
2125:
1.82 kristaps 2126: switch (r->last->tok) {
1.207 schwarze 2127: case ROFF_el:
2128: case ROFF_ie:
2129: case ROFF_if:
1.340 schwarze 2130: case ROFF_while:
1.82 kristaps 2131: break;
2132: default:
1.350 schwarze 2133: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 2134: return 0;
1.75 kristaps 2135: }
2136:
1.76 kristaps 2137: if (r->last->endspan > -1) {
1.350 schwarze 2138: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 2139: return 0;
1.76 kristaps 2140: }
2141:
1.340 schwarze 2142: return roffnode_pop(r) + roffnode_cleanscope(r);
1.76 kristaps 2143: }
2144:
1.340 schwarze 2145: static int
1.80 kristaps 2146: roff_block(ROFF_ARGS)
1.76 kristaps 2147: {
1.315 schwarze 2148: const char *name, *value;
2149: char *call, *cp, *iname, *rname;
2150: size_t csz, namesz, rsz;
2151: int deftype;
1.106 kristaps 2152:
1.220 schwarze 2153: /* Ignore groff compatibility mode for now. */
1.76 kristaps 2154:
1.238 schwarze 2155: if (tok == ROFF_de1)
1.220 schwarze 2156: tok = ROFF_de;
1.251 schwarze 2157: else if (tok == ROFF_dei1)
2158: tok = ROFF_dei;
1.238 schwarze 2159: else if (tok == ROFF_am1)
1.220 schwarze 2160: tok = ROFF_am;
1.251 schwarze 2161: else if (tok == ROFF_ami1)
2162: tok = ROFF_ami;
1.220 schwarze 2163:
2164: /* Parse the macro name argument. */
2165:
1.238 schwarze 2166: cp = buf->buf + pos;
2167: if (tok == ROFF_ig) {
1.220 schwarze 2168: iname = NULL;
2169: namesz = 0;
2170: } else {
2171: iname = cp;
2172: namesz = roff_getname(r, &cp, ln, ppos);
2173: iname[namesz] = '\0';
2174: }
1.107 kristaps 2175:
1.220 schwarze 2176: /* Resolve the macro name argument if it is indirect. */
1.107 kristaps 2177:
1.238 schwarze 2178: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 2179: deftype = ROFFDEF_USER;
2180: name = roff_getstrn(r, iname, namesz, &deftype);
2181: if (name == NULL) {
1.350 schwarze 2182: mandoc_msg(MANDOCERR_STR_UNDEF,
2183: ln, (int)(iname - buf->buf),
1.220 schwarze 2184: "%.*s", (int)namesz, iname);
2185: namesz = 0;
2186: } else
2187: namesz = strlen(name);
2188: } else
2189: name = iname;
1.107 kristaps 2190:
1.238 schwarze 2191: if (namesz == 0 && tok != ROFF_ig) {
1.350 schwarze 2192: mandoc_msg(MANDOCERR_REQ_EMPTY,
2193: ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2194: return ROFF_IGN;
1.220 schwarze 2195: }
1.80 kristaps 2196:
1.106 kristaps 2197: roffnode_push(r, tok, name, ln, ppos);
2198:
2199: /*
2200: * At the beginning of a `de' macro, clear the existing string
2201: * with the same name, if there is one. New content will be
1.193 schwarze 2202: * appended from roff_block_text() in multiline mode.
1.106 kristaps 2203: */
1.107 kristaps 2204:
1.311 schwarze 2205: if (tok == ROFF_de || tok == ROFF_dei) {
1.213 schwarze 2206: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.311 schwarze 2207: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.315 schwarze 2208: } else if (tok == ROFF_am || tok == ROFF_ami) {
2209: deftype = ROFFDEF_ANY;
2210: value = roff_getstrn(r, iname, namesz, &deftype);
2211: switch (deftype) { /* Before appending, ... */
2212: case ROFFDEF_PRE: /* copy predefined to user-defined. */
2213: roff_setstrn(&r->strtab, name, namesz,
2214: value, strlen(value), 0);
2215: break;
2216: case ROFFDEF_REN: /* call original standard macro. */
2217: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2218: (int)strlen(value), value);
2219: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2220: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
2221: free(call);
2222: break;
2223: case ROFFDEF_STD: /* rename and call standard macro. */
2224: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
2225: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
2226: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2227: (int)rsz, rname);
2228: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2229: free(call);
2230: free(rname);
2231: break;
2232: default:
2233: break;
2234: }
1.311 schwarze 2235: }
1.76 kristaps 2236:
1.238 schwarze 2237: if (*cp == '\0')
1.277 schwarze 2238: return ROFF_IGN;
1.78 kristaps 2239:
1.220 schwarze 2240: /* Get the custom end marker. */
1.107 kristaps 2241:
1.220 schwarze 2242: iname = cp;
1.213 schwarze 2243: namesz = roff_getname(r, &cp, ln, ppos);
1.220 schwarze 2244:
2245: /* Resolve the end marker if it is indirect. */
2246:
1.238 schwarze 2247: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 2248: deftype = ROFFDEF_USER;
2249: name = roff_getstrn(r, iname, namesz, &deftype);
2250: if (name == NULL) {
1.350 schwarze 2251: mandoc_msg(MANDOCERR_STR_UNDEF,
2252: ln, (int)(iname - buf->buf),
1.220 schwarze 2253: "%.*s", (int)namesz, iname);
2254: namesz = 0;
2255: } else
2256: namesz = strlen(name);
2257: } else
2258: name = iname;
2259:
1.213 schwarze 2260: if (namesz)
2261: r->last->end = mandoc_strndup(name, namesz);
1.78 kristaps 2262:
1.238 schwarze 2263: if (*cp != '\0')
1.350 schwarze 2264: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.295 schwarze 2265: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.74 kristaps 2266:
1.277 schwarze 2267: return ROFF_IGN;
1.78 kristaps 2268: }
2269:
1.340 schwarze 2270: static int
1.80 kristaps 2271: roff_block_sub(ROFF_ARGS)
1.79 kristaps 2272: {
1.294 schwarze 2273: enum roff_tok t;
1.79 kristaps 2274: int i, j;
2275:
2276: /*
2277: * First check whether a custom macro exists at this level. If
2278: * it does, then check against it. This is some of groff's
2279: * stranger behaviours. If we encountered a custom end-scope
2280: * tag and that tag also happens to be a "real" macro, then we
2281: * need to try interpreting it again as a real macro. If it's
2282: * not, then return ignore. Else continue.
2283: */
2284:
2285: if (r->last->end) {
1.130 kristaps 2286: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.238 schwarze 2287: if (buf->buf[i] != r->last->end[j])
1.79 kristaps 2288: break;
2289:
1.238 schwarze 2290: if (r->last->end[j] == '\0' &&
2291: (buf->buf[i] == '\0' ||
2292: buf->buf[i] == ' ' ||
2293: buf->buf[i] == '\t')) {
1.79 kristaps 2294: roffnode_pop(r);
2295: roffnode_cleanscope(r);
2296:
1.238 schwarze 2297: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.130 kristaps 2298: i++;
2299:
2300: pos = i;
1.238 schwarze 2301: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.294 schwarze 2302: TOKEN_NONE)
1.277 schwarze 2303: return ROFF_RERUN;
2304: return ROFF_IGN;
1.79 kristaps 2305: }
2306: }
2307:
2308: /*
2309: * If we have no custom end-query or lookup failed, then try
2310: * pulling it out of the hashtable.
2311: */
2312:
1.238 schwarze 2313: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.79 kristaps 2314:
1.238 schwarze 2315: if (t != ROFF_cblock) {
2316: if (tok != ROFF_ig)
2317: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.277 schwarze 2318: return ROFF_IGN;
1.106 kristaps 2319: }
1.79 kristaps 2320:
1.277 schwarze 2321: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 2322: }
2323:
1.340 schwarze 2324: static int
1.80 kristaps 2325: roff_block_text(ROFF_ARGS)
1.78 kristaps 2326: {
2327:
1.238 schwarze 2328: if (tok != ROFF_ig)
2329: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.106 kristaps 2330:
1.277 schwarze 2331: return ROFF_IGN;
1.78 kristaps 2332: }
2333:
1.375 schwarze 2334: /*
2335: * Check for a closing "\}" and handle it.
2336: * In this function, the final "int *offs" argument is used for
2337: * different purposes than elsewhere:
2338: * Input: *offs == 0: caller wants to discard arguments following \}
2339: * *offs == 1: caller wants to preserve text following \}
2340: * Output: *offs = 0: tell caller to discard input line
2341: * *offs = 1: tell caller to use input line
2342: */
1.340 schwarze 2343: static int
1.375 schwarze 2344: roff_cond_checkend(ROFF_ARGS)
1.82 kristaps 2345: {
1.340 schwarze 2346: char *ep;
2347: int endloop, irc, rr;
1.82 kristaps 2348:
1.340 schwarze 2349: irc = ROFF_IGN;
1.82 kristaps 2350: rr = r->last->rule;
1.340 schwarze 2351: endloop = tok != ROFF_while ? ROFF_IGN :
2352: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2353: if (roffnode_cleanscope(r))
2354: irc |= endloop;
1.144 kristaps 2355:
1.196 schwarze 2356: /*
1.375 schwarze 2357: * If "\}" occurs on a macro line without a preceding macro or
2358: * a text line contains nothing else, drop the line completely.
1.196 schwarze 2359: */
2360:
1.238 schwarze 2361: ep = buf->buf + pos;
1.375 schwarze 2362: if (ep[0] == '\\' && ep[1] == '}' && (ep[2] == '\0' || *offs == 0))
1.198 schwarze 2363: rr = 0;
1.196 schwarze 2364:
1.343 schwarze 2365: /*
1.375 schwarze 2366: * The closing delimiter "\}" rewinds the conditional scope
1.343 schwarze 2367: * but is otherwise ignored when interpreting the line.
2368: */
1.144 kristaps 2369:
1.238 schwarze 2370: while ((ep = strchr(ep, '\\')) != NULL) {
1.318 schwarze 2371: switch (ep[1]) {
2372: case '}':
1.376 schwarze 2373: if (ep[2] == '\0')
2374: ep[0] = '\0';
2375: else if (rr)
1.375 schwarze 2376: ep[1] = '&';
2377: else
2378: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1.340 schwarze 2379: if (roff_ccond(r, ln, ep - buf->buf))
2380: irc |= endloop;
1.318 schwarze 2381: break;
2382: case '\0':
2383: ++ep;
2384: break;
2385: default:
2386: ep += 2;
2387: break;
1.197 schwarze 2388: }
1.177 schwarze 2389: }
1.375 schwarze 2390: *offs = rr;
2391: return irc;
2392: }
1.318 schwarze 2393:
1.375 schwarze 2394: /*
2395: * Parse and process a request or macro line in conditional scope.
2396: */
2397: static int
2398: roff_cond_sub(ROFF_ARGS)
2399: {
2400: struct roffnode *bl;
2401: int irc, rr;
2402: enum roff_tok t;
2403:
2404: rr = 0; /* If arguments follow "\}", skip them. */
2405: irc = roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
1.368 schwarze 2406: t = roff_parse(r, buf->buf, &pos, ln, ppos);
2407:
2408: /* For now, let high level macros abort .ce mode. */
2409:
2410: if (roffce_node != NULL &&
2411: (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
2412: t == ROFF_TH || t == ROFF_TS)) {
2413: r->man->last = roffce_node;
2414: r->man->next = ROFF_NEXT_SIBLING;
2415: roffce_lines = 0;
2416: roffce_node = NULL;
2417: }
2418:
1.318 schwarze 2419: /*
2420: * Fully handle known macros when they are structurally
2421: * required or when the conditional evaluated to true.
2422: */
2423:
1.364 schwarze 2424: if (t == ROFF_break) {
2425: if (irc & ROFF_LOOPMASK)
2426: irc = ROFF_IGN | ROFF_LOOPEXIT;
2427: else if (rr) {
2428: for (bl = r->last; bl != NULL; bl = bl->parent) {
2429: bl->rule = 0;
2430: if (bl->tok == ROFF_while)
2431: break;
2432: }
2433: }
2434: } else if (t != TOKEN_NONE &&
2435: (rr || roffs[t].flags & ROFFMAC_STRUCT))
2436: irc |= (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
2437: else
2438: irc |= rr ? ROFF_CONT : ROFF_IGN;
1.340 schwarze 2439: return irc;
1.82 kristaps 2440: }
2441:
1.375 schwarze 2442: /*
2443: * Parse and process a text line in conditional scope.
2444: */
1.340 schwarze 2445: static int
1.82 kristaps 2446: roff_cond_text(ROFF_ARGS)
1.78 kristaps 2447: {
1.375 schwarze 2448: int irc, rr;
1.343 schwarze 2449:
1.375 schwarze 2450: rr = 1; /* If arguments follow "\}", preserve them. */
2451: irc = roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
1.340 schwarze 2452: if (rr)
2453: irc |= ROFF_CONT;
2454: return irc;
1.74 kristaps 2455: }
2456:
1.266 schwarze 2457: /* --- handling of numeric and conditional expressions -------------------- */
2458:
1.204 schwarze 2459: /*
2460: * Parse a single signed integer number. Stop at the first non-digit.
2461: * If there is at least one digit, return success and advance the
2462: * parse point, else return failure and let the parse point unchanged.
2463: * Ignore overflows, treat them just like the C language.
2464: */
1.184 schwarze 2465: static int
1.261 schwarze 2466: roff_getnum(const char *v, int *pos, int *res, int flags)
1.184 schwarze 2467: {
1.261 schwarze 2468: int myres, scaled, n, p;
1.206 schwarze 2469:
2470: if (NULL == res)
2471: res = &myres;
1.184 schwarze 2472:
2473: p = *pos;
2474: n = v[p] == '-';
1.261 schwarze 2475: if (n || v[p] == '+')
1.184 schwarze 2476: p++;
2477:
1.261 schwarze 2478: if (flags & ROFFNUM_WHITE)
2479: while (isspace((unsigned char)v[p]))
2480: p++;
2481:
1.184 schwarze 2482: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.204 schwarze 2483: *res = 10 * *res + v[p] - '0';
1.184 schwarze 2484: if (p == *pos + n)
2485: return 0;
2486:
2487: if (n)
2488: *res = -*res;
2489:
1.254 schwarze 2490: /* Each number may be followed by one optional scaling unit. */
2491:
2492: switch (v[p]) {
2493: case 'f':
1.261 schwarze 2494: scaled = *res * 65536;
1.254 schwarze 2495: break;
2496: case 'i':
1.261 schwarze 2497: scaled = *res * 240;
1.254 schwarze 2498: break;
2499: case 'c':
1.261 schwarze 2500: scaled = *res * 240 / 2.54;
1.254 schwarze 2501: break;
2502: case 'v':
2503: case 'P':
1.261 schwarze 2504: scaled = *res * 40;
1.254 schwarze 2505: break;
2506: case 'm':
2507: case 'n':
1.261 schwarze 2508: scaled = *res * 24;
1.254 schwarze 2509: break;
2510: case 'p':
1.261 schwarze 2511: scaled = *res * 10 / 3;
1.254 schwarze 2512: break;
2513: case 'u':
1.261 schwarze 2514: scaled = *res;
1.254 schwarze 2515: break;
2516: case 'M':
1.261 schwarze 2517: scaled = *res * 6 / 25;
1.254 schwarze 2518: break;
2519: default:
1.261 schwarze 2520: scaled = *res;
1.254 schwarze 2521: p--;
2522: break;
2523: }
1.261 schwarze 2524: if (flags & ROFFNUM_SCALE)
2525: *res = scaled;
1.254 schwarze 2526:
2527: *pos = p + 1;
1.277 schwarze 2528: return 1;
1.184 schwarze 2529: }
2530:
1.198 schwarze 2531: /*
2532: * Evaluate a string comparison condition.
2533: * The first character is the delimiter.
2534: * Succeed if the string up to its second occurrence
2535: * matches the string up to its third occurence.
2536: * Advance the cursor after the third occurrence
2537: * or lacking that, to the end of the line.
2538: */
2539: static int
2540: roff_evalstrcond(const char *v, int *pos)
2541: {
2542: const char *s1, *s2, *s3;
2543: int match;
2544:
2545: match = 0;
2546: s1 = v + *pos; /* initial delimiter */
2547: s2 = s1 + 1; /* for scanning the first string */
2548: s3 = strchr(s2, *s1); /* for scanning the second string */
2549:
2550: if (NULL == s3) /* found no middle delimiter */
2551: goto out;
2552:
2553: while ('\0' != *++s3) {
2554: if (*s2 != *s3) { /* mismatch */
2555: s3 = strchr(s3, *s1);
2556: break;
2557: }
2558: if (*s3 == *s1) { /* found the final delimiter */
2559: match = 1;
2560: break;
2561: }
2562: s2++;
2563: }
2564:
2565: out:
2566: if (NULL == s3)
2567: s3 = strchr(s2, '\0');
1.242 schwarze 2568: else if (*s3 != '\0')
1.198 schwarze 2569: s3++;
2570: *pos = s3 - v;
1.277 schwarze 2571: return match;
1.198 schwarze 2572: }
2573:
1.204 schwarze 2574: /*
2575: * Evaluate an optionally negated single character, numerical,
2576: * or string condition.
2577: */
1.198 schwarze 2578: static int
1.271 schwarze 2579: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.88 kristaps 2580: {
1.336 schwarze 2581: const char *start, *end;
2582: char *cp, *name;
2583: size_t sz;
2584: int deftype, len, number, savepos, istrue, wanttrue;
1.88 kristaps 2585:
1.198 schwarze 2586: if ('!' == v[*pos]) {
2587: wanttrue = 0;
2588: (*pos)++;
2589: } else
2590: wanttrue = 1;
2591:
1.88 kristaps 2592: switch (v[*pos]) {
1.240 schwarze 2593: case '\0':
1.277 schwarze 2594: return 0;
1.207 schwarze 2595: case 'n':
2596: case 'o':
1.88 kristaps 2597: (*pos)++;
1.277 schwarze 2598: return wanttrue;
1.207 schwarze 2599: case 'e':
2600: case 't':
1.239 schwarze 2601: case 'v':
1.88 kristaps 2602: (*pos)++;
1.277 schwarze 2603: return !wanttrue;
1.336 schwarze 2604: case 'c':
2605: do {
2606: (*pos)++;
2607: } while (v[*pos] == ' ');
2608:
2609: /*
2610: * Quirk for groff compatibility:
2611: * The horizontal tab is neither available nor unavailable.
2612: */
2613:
2614: if (v[*pos] == '\t') {
2615: (*pos)++;
2616: return 0;
2617: }
2618:
2619: /* Printable ASCII characters are available. */
2620:
2621: if (v[*pos] != '\\') {
2622: (*pos)++;
2623: return wanttrue;
2624: }
2625:
2626: end = v + ++*pos;
2627: switch (mandoc_escape(&end, &start, &len)) {
2628: case ESCAPE_SPECIAL:
2629: istrue = mchars_spec2cp(start, len) != -1;
2630: break;
2631: case ESCAPE_UNICODE:
2632: istrue = 1;
2633: break;
2634: case ESCAPE_NUMBERED:
2635: istrue = mchars_num2char(start, len) != -1;
2636: break;
2637: default:
2638: istrue = !wanttrue;
2639: break;
2640: }
2641: *pos = end - v;
2642: return istrue == wanttrue;
1.310 schwarze 2643: case 'd':
1.271 schwarze 2644: case 'r':
1.310 schwarze 2645: cp = v + *pos + 1;
2646: while (*cp == ' ')
2647: cp++;
2648: name = cp;
2649: sz = roff_getname(r, &cp, ln, cp - v);
1.315 schwarze 2650: if (sz == 0)
2651: istrue = 0;
2652: else if (v[*pos] == 'r')
2653: istrue = roff_hasregn(r, name, sz);
2654: else {
2655: deftype = ROFFDEF_ANY;
2656: roff_getstrn(r, name, sz, &deftype);
2657: istrue = !!deftype;
2658: }
1.363 schwarze 2659: *pos = (name + sz) - v;
1.310 schwarze 2660: return istrue == wanttrue;
1.88 kristaps 2661: default:
2662: break;
2663: }
2664:
1.241 schwarze 2665: savepos = *pos;
1.261 schwarze 2666: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.277 schwarze 2667: return (number > 0) == wanttrue;
1.241 schwarze 2668: else if (*pos == savepos)
1.277 schwarze 2669: return roff_evalstrcond(v, pos) == wanttrue;
1.204 schwarze 2670: else
1.277 schwarze 2671: return 0;
1.88 kristaps 2672: }
2673:
1.340 schwarze 2674: static int
1.103 kristaps 2675: roff_line_ignore(ROFF_ARGS)
1.89 kristaps 2676: {
1.123 schwarze 2677:
1.277 schwarze 2678: return ROFF_IGN;
1.89 kristaps 2679: }
2680:
1.340 schwarze 2681: static int
1.251 schwarze 2682: roff_insec(ROFF_ARGS)
2683: {
2684:
1.350 schwarze 2685: mandoc_msg(MANDOCERR_REQ_INSEC, ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2686: return ROFF_IGN;
1.251 schwarze 2687: }
2688:
1.340 schwarze 2689: static int
1.251 schwarze 2690: roff_unsupp(ROFF_ARGS)
2691: {
2692:
1.350 schwarze 2693: mandoc_msg(MANDOCERR_REQ_UNSUPP, ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2694: return ROFF_IGN;
1.251 schwarze 2695: }
2696:
1.340 schwarze 2697: static int
1.82 kristaps 2698: roff_cond(ROFF_ARGS)
1.74 kristaps 2699: {
1.340 schwarze 2700: int irc;
1.173 schwarze 2701:
2702: roffnode_push(r, tok, NULL, ln, ppos);
1.74 kristaps 2703:
1.207 schwarze 2704: /*
1.134 kristaps 2705: * An `.el' has no conditional body: it will consume the value
2706: * of the current rstack entry set in prior `ie' calls or
1.207 schwarze 2707: * defaults to DENY.
1.134 kristaps 2708: *
2709: * If we're not an `el', however, then evaluate the conditional.
2710: */
1.133 kristaps 2711:
1.238 schwarze 2712: r->last->rule = tok == ROFF_el ?
1.207 schwarze 2713: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.238 schwarze 2714: roff_evalcond(r, ln, buf->buf, &pos);
1.77 kristaps 2715:
1.134 kristaps 2716: /*
2717: * An if-else will put the NEGATION of the current evaluated
2718: * conditional into the stack of rules.
2719: */
2720:
1.238 schwarze 2721: if (tok == ROFF_ie) {
1.223 schwarze 2722: if (r->rstackpos + 1 == r->rstacksz) {
2723: r->rstacksz += 16;
2724: r->rstack = mandoc_reallocarray(r->rstack,
2725: r->rstacksz, sizeof(int));
1.134 kristaps 2726: }
1.198 schwarze 2727: r->rstack[++r->rstackpos] = !r->last->rule;
1.82 kristaps 2728: }
1.88 kristaps 2729:
2730: /* If the parent has false as its rule, then so do we. */
2731:
1.198 schwarze 2732: if (r->last->parent && !r->last->parent->rule)
2733: r->last->rule = 0;
1.88 kristaps 2734:
2735: /*
1.173 schwarze 2736: * Determine scope.
2737: * If there is nothing on the line after the conditional,
2738: * not even whitespace, use next-line scope.
1.340 schwarze 2739: * Except that .while does not support next-line scope.
1.88 kristaps 2740: */
1.74 kristaps 2741:
1.340 schwarze 2742: if (buf->buf[pos] == '\0' && tok != ROFF_while) {
1.173 schwarze 2743: r->last->endspan = 2;
2744: goto out;
2745: }
2746:
1.238 schwarze 2747: while (buf->buf[pos] == ' ')
1.173 schwarze 2748: pos++;
2749:
2750: /* An opening brace requests multiline scope. */
1.75 kristaps 2751:
1.238 schwarze 2752: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.75 kristaps 2753: r->last->endspan = -1;
2754: pos += 2;
1.272 schwarze 2755: while (buf->buf[pos] == ' ')
2756: pos++;
1.173 schwarze 2757: goto out;
1.207 schwarze 2758: }
1.74 kristaps 2759:
1.77 kristaps 2760: /*
1.173 schwarze 2761: * Anything else following the conditional causes
2762: * single-line scope. Warn if the scope contains
2763: * nothing but trailing whitespace.
1.77 kristaps 2764: */
2765:
1.238 schwarze 2766: if (buf->buf[pos] == '\0')
1.350 schwarze 2767: mandoc_msg(MANDOCERR_COND_EMPTY,
2768: ln, ppos, "%s", roff_name[tok]);
1.77 kristaps 2769:
1.173 schwarze 2770: r->last->endspan = 1;
1.74 kristaps 2771:
1.173 schwarze 2772: out:
1.75 kristaps 2773: *offs = pos;
1.340 schwarze 2774: irc = ROFF_RERUN;
2775: if (tok == ROFF_while)
2776: irc |= ROFF_WHILE;
2777: return irc;
1.83 schwarze 2778: }
2779:
1.340 schwarze 2780: static int
1.92 schwarze 2781: roff_ds(ROFF_ARGS)
2782: {
1.212 schwarze 2783: char *string;
2784: const char *name;
2785: size_t namesz;
1.96 kristaps 2786:
1.251 schwarze 2787: /* Ignore groff compatibility mode for now. */
2788:
2789: if (tok == ROFF_ds1)
2790: tok = ROFF_ds;
2791: else if (tok == ROFF_as1)
2792: tok = ROFF_as;
2793:
1.96 kristaps 2794: /*
1.212 schwarze 2795: * The first word is the name of the string.
2796: * If it is empty or terminated by an escape sequence,
2797: * abort the `ds' request without defining anything.
1.96 kristaps 2798: */
1.92 schwarze 2799:
1.238 schwarze 2800: name = string = buf->buf + pos;
2801: if (*name == '\0')
1.277 schwarze 2802: return ROFF_IGN;
1.92 schwarze 2803:
1.212 schwarze 2804: namesz = roff_getname(r, &string, ln, pos);
1.363 schwarze 2805: switch (name[namesz]) {
2806: case '\\':
1.277 schwarze 2807: return ROFF_IGN;
1.363 schwarze 2808: case '\t':
2809: string = buf->buf + pos + namesz;
2810: break;
2811: default:
2812: break;
2813: }
1.212 schwarze 2814:
2815: /* Read past the initial double-quote, if any. */
1.238 schwarze 2816: if (*string == '"')
1.92 schwarze 2817: string++;
2818:
1.96 kristaps 2819: /* The rest is the value. */
1.212 schwarze 2820: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2821: ROFF_as == tok);
1.311 schwarze 2822: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.277 schwarze 2823: return ROFF_IGN;
1.92 schwarze 2824: }
2825:
1.204 schwarze 2826: /*
2827: * Parse a single operator, one or two characters long.
2828: * If the operator is recognized, return success and advance the
2829: * parse point, else return failure and let the parse point unchanged.
2830: */
2831: static int
2832: roff_getop(const char *v, int *pos, char *res)
2833: {
2834:
2835: *res = v[*pos];
2836:
2837: switch (*res) {
1.207 schwarze 2838: case '+':
2839: case '-':
2840: case '*':
2841: case '/':
2842: case '%':
2843: case '&':
2844: case ':':
1.204 schwarze 2845: break;
2846: case '<':
2847: switch (v[*pos + 1]) {
1.207 schwarze 2848: case '=':
1.204 schwarze 2849: *res = 'l';
2850: (*pos)++;
2851: break;
1.207 schwarze 2852: case '>':
1.204 schwarze 2853: *res = '!';
2854: (*pos)++;
2855: break;
1.207 schwarze 2856: case '?':
1.204 schwarze 2857: *res = 'i';
2858: (*pos)++;
2859: break;
2860: default:
2861: break;
2862: }
2863: break;
2864: case '>':
2865: switch (v[*pos + 1]) {
1.207 schwarze 2866: case '=':
1.204 schwarze 2867: *res = 'g';
2868: (*pos)++;
2869: break;
1.207 schwarze 2870: case '?':
1.204 schwarze 2871: *res = 'a';
2872: (*pos)++;
2873: break;
2874: default:
2875: break;
2876: }
2877: break;
2878: case '=':
2879: if ('=' == v[*pos + 1])
2880: (*pos)++;
2881: break;
2882: default:
1.277 schwarze 2883: return 0;
1.204 schwarze 2884: }
2885: (*pos)++;
2886:
1.277 schwarze 2887: return *res;
1.204 schwarze 2888: }
2889:
2890: /*
2891: * Evaluate either a parenthesized numeric expression
2892: * or a single signed integer number.
2893: */
2894: static int
1.235 schwarze 2895: roff_evalpar(struct roff *r, int ln,
1.261 schwarze 2896: const char *v, int *pos, int *res, int flags)
1.204 schwarze 2897: {
2898:
2899: if ('(' != v[*pos])
1.277 schwarze 2900: return roff_getnum(v, pos, res, flags);
1.204 schwarze 2901:
2902: (*pos)++;
1.261 schwarze 2903: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.277 schwarze 2904: return 0;
1.204 schwarze 2905:
1.206 schwarze 2906: /*
2907: * Omission of the closing parenthesis
2908: * is an error in validation mode,
2909: * but ignored in evaluation mode.
2910: */
2911:
1.204 schwarze 2912: if (')' == v[*pos])
2913: (*pos)++;
1.206 schwarze 2914: else if (NULL == res)
1.277 schwarze 2915: return 0;
1.204 schwarze 2916:
1.277 schwarze 2917: return 1;
1.204 schwarze 2918: }
2919:
2920: /*
2921: * Evaluate a complete numeric expression.
2922: * Proceed left to right, there is no concept of precedence.
2923: */
2924: static int
1.235 schwarze 2925: roff_evalnum(struct roff *r, int ln, const char *v,
1.261 schwarze 2926: int *pos, int *res, int flags)
1.204 schwarze 2927: {
2928: int mypos, operand2;
2929: char operator;
2930:
2931: if (NULL == pos) {
2932: mypos = 0;
2933: pos = &mypos;
2934: }
2935:
1.261 schwarze 2936: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2937: while (isspace((unsigned char)v[*pos]))
2938: (*pos)++;
2939:
1.261 schwarze 2940: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.277 schwarze 2941: return 0;
1.204 schwarze 2942:
2943: while (1) {
1.261 schwarze 2944: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2945: while (isspace((unsigned char)v[*pos]))
2946: (*pos)++;
2947:
2948: if ( ! roff_getop(v, pos, &operator))
2949: break;
2950:
1.261 schwarze 2951: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2952: while (isspace((unsigned char)v[*pos]))
2953: (*pos)++;
2954:
1.261 schwarze 2955: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.277 schwarze 2956: return 0;
1.204 schwarze 2957:
1.261 schwarze 2958: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2959: while (isspace((unsigned char)v[*pos]))
2960: (*pos)++;
1.206 schwarze 2961:
2962: if (NULL == res)
2963: continue;
1.204 schwarze 2964:
2965: switch (operator) {
1.207 schwarze 2966: case '+':
1.204 schwarze 2967: *res += operand2;
2968: break;
1.207 schwarze 2969: case '-':
1.204 schwarze 2970: *res -= operand2;
2971: break;
1.207 schwarze 2972: case '*':
1.204 schwarze 2973: *res *= operand2;
2974: break;
1.207 schwarze 2975: case '/':
1.244 schwarze 2976: if (operand2 == 0) {
1.235 schwarze 2977: mandoc_msg(MANDOCERR_DIVZERO,
1.350 schwarze 2978: ln, *pos, "%s", v);
1.234 kristaps 2979: *res = 0;
2980: break;
2981: }
1.204 schwarze 2982: *res /= operand2;
2983: break;
1.207 schwarze 2984: case '%':
1.244 schwarze 2985: if (operand2 == 0) {
2986: mandoc_msg(MANDOCERR_DIVZERO,
1.350 schwarze 2987: ln, *pos, "%s", v);
1.244 schwarze 2988: *res = 0;
2989: break;
2990: }
1.204 schwarze 2991: *res %= operand2;
2992: break;
1.207 schwarze 2993: case '<':
1.204 schwarze 2994: *res = *res < operand2;
2995: break;
1.207 schwarze 2996: case '>':
1.204 schwarze 2997: *res = *res > operand2;
2998: break;
1.207 schwarze 2999: case 'l':
1.204 schwarze 3000: *res = *res <= operand2;
3001: break;
1.207 schwarze 3002: case 'g':
1.204 schwarze 3003: *res = *res >= operand2;
3004: break;
1.207 schwarze 3005: case '=':
1.204 schwarze 3006: *res = *res == operand2;
3007: break;
1.207 schwarze 3008: case '!':
1.204 schwarze 3009: *res = *res != operand2;
3010: break;
1.207 schwarze 3011: case '&':
1.204 schwarze 3012: *res = *res && operand2;
3013: break;
1.207 schwarze 3014: case ':':
1.204 schwarze 3015: *res = *res || operand2;
3016: break;
1.207 schwarze 3017: case 'i':
1.204 schwarze 3018: if (operand2 < *res)
3019: *res = operand2;
3020: break;
1.207 schwarze 3021: case 'a':
1.204 schwarze 3022: if (operand2 > *res)
3023: *res = operand2;
3024: break;
3025: default:
3026: abort();
3027: }
3028: }
1.277 schwarze 3029: return 1;
1.204 schwarze 3030: }
3031:
1.266 schwarze 3032: /* --- register management ------------------------------------------------ */
3033:
1.180 schwarze 3034: void
1.187 schwarze 3035: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.147 kristaps 3036: {
1.327 schwarze 3037: roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
1.326 schwarze 3038: }
3039:
3040: static void
3041: roff_setregn(struct roff *r, const char *name, size_t len,
1.327 schwarze 3042: int val, char sign, int step)
1.326 schwarze 3043: {
1.180 schwarze 3044: struct roffreg *reg;
3045:
3046: /* Search for an existing register with the same name. */
3047: reg = r->regtab;
3048:
1.326 schwarze 3049: while (reg != NULL && (reg->key.sz != len ||
3050: strncmp(reg->key.p, name, len) != 0))
1.180 schwarze 3051: reg = reg->next;
1.147 kristaps 3052:
1.180 schwarze 3053: if (NULL == reg) {
3054: /* Create a new register. */
3055: reg = mandoc_malloc(sizeof(struct roffreg));
1.326 schwarze 3056: reg->key.p = mandoc_strndup(name, len);
3057: reg->key.sz = len;
1.187 schwarze 3058: reg->val = 0;
1.327 schwarze 3059: reg->step = 0;
1.180 schwarze 3060: reg->next = r->regtab;
3061: r->regtab = reg;
3062: }
3063:
1.187 schwarze 3064: if ('+' == sign)
3065: reg->val += val;
3066: else if ('-' == sign)
3067: reg->val -= val;
3068: else
3069: reg->val = val;
1.327 schwarze 3070: if (step != INT_MIN)
3071: reg->step = step;
1.147 kristaps 3072: }
3073:
1.192 schwarze 3074: /*
3075: * Handle some predefined read-only number registers.
3076: * For now, return -1 if the requested register is not predefined;
3077: * in case a predefined read-only register having the value -1
3078: * were to turn up, another special value would have to be chosen.
3079: */
3080: static int
1.273 schwarze 3081: roff_getregro(const struct roff *r, const char *name)
1.192 schwarze 3082: {
3083:
3084: switch (*name) {
1.273 schwarze 3085: case '$': /* Number of arguments of the last macro evaluated. */
1.339 schwarze 3086: return r->mstackpos < 0 ? 0 : r->mstack[r->mstackpos].argc;
1.207 schwarze 3087: case 'A': /* ASCII approximation mode is always off. */
1.277 schwarze 3088: return 0;
1.207 schwarze 3089: case 'g': /* Groff compatibility mode is always on. */
1.277 schwarze 3090: return 1;
1.207 schwarze 3091: case 'H': /* Fixed horizontal resolution. */
1.277 schwarze 3092: return 24;
1.207 schwarze 3093: case 'j': /* Always adjust left margin only. */
1.277 schwarze 3094: return 0;
1.207 schwarze 3095: case 'T': /* Some output device is always defined. */
1.277 schwarze 3096: return 1;
1.207 schwarze 3097: case 'V': /* Fixed vertical resolution. */
1.277 schwarze 3098: return 40;
1.192 schwarze 3099: default:
1.277 schwarze 3100: return -1;
1.192 schwarze 3101: }
3102: }
3103:
1.181 schwarze 3104: int
1.326 schwarze 3105: roff_getreg(struct roff *r, const char *name)
1.147 kristaps 3106: {
1.327 schwarze 3107: return roff_getregn(r, name, strlen(name), '\0');
1.181 schwarze 3108: }
3109:
3110: static int
1.327 schwarze 3111: roff_getregn(struct roff *r, const char *name, size_t len, char sign)
1.181 schwarze 3112: {
3113: struct roffreg *reg;
1.192 schwarze 3114: int val;
3115:
3116: if ('.' == name[0] && 2 == len) {
1.273 schwarze 3117: val = roff_getregro(r, name + 1);
1.192 schwarze 3118: if (-1 != val)
1.277 schwarze 3119: return val;
1.192 schwarze 3120: }
1.181 schwarze 3121:
1.327 schwarze 3122: for (reg = r->regtab; reg; reg = reg->next) {
1.181 schwarze 3123: if (len == reg->key.sz &&
1.327 schwarze 3124: 0 == strncmp(name, reg->key.p, len)) {
3125: switch (sign) {
3126: case '+':
3127: reg->val += reg->step;
3128: break;
3129: case '-':
3130: reg->val -= reg->step;
3131: break;
3132: default:
3133: break;
3134: }
1.277 schwarze 3135: return reg->val;
1.327 schwarze 3136: }
3137: }
1.271 schwarze 3138:
1.327 schwarze 3139: roff_setregn(r, name, len, 0, '\0', INT_MIN);
1.277 schwarze 3140: return 0;
1.271 schwarze 3141: }
3142:
3143: static int
3144: roff_hasregn(const struct roff *r, const char *name, size_t len)
3145: {
3146: struct roffreg *reg;
3147: int val;
3148:
3149: if ('.' == name[0] && 2 == len) {
1.273 schwarze 3150: val = roff_getregro(r, name + 1);
1.271 schwarze 3151: if (-1 != val)
1.277 schwarze 3152: return 1;
1.271 schwarze 3153: }
3154:
3155: for (reg = r->regtab; reg; reg = reg->next)
3156: if (len == reg->key.sz &&
3157: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 3158: return 1;
1.147 kristaps 3159:
1.277 schwarze 3160: return 0;
1.147 kristaps 3161: }
3162:
1.180 schwarze 3163: static void
3164: roff_freereg(struct roffreg *reg)
1.147 kristaps 3165: {
1.180 schwarze 3166: struct roffreg *old_reg;
1.147 kristaps 3167:
1.180 schwarze 3168: while (NULL != reg) {
3169: free(reg->key.p);
3170: old_reg = reg;
3171: reg = reg->next;
3172: free(old_reg);
3173: }
1.147 kristaps 3174: }
1.92 schwarze 3175:
1.340 schwarze 3176: static int
1.89 kristaps 3177: roff_nr(ROFF_ARGS)
1.83 schwarze 3178: {
1.327 schwarze 3179: char *key, *val, *step;
1.212 schwarze 3180: size_t keysz;
1.327 schwarze 3181: int iv, is, len;
1.187 schwarze 3182: char sign;
1.89 kristaps 3183:
1.238 schwarze 3184: key = val = buf->buf + pos;
3185: if (*key == '\0')
1.277 schwarze 3186: return ROFF_IGN;
1.212 schwarze 3187:
3188: keysz = roff_getname(r, &val, ln, pos);
1.363 schwarze 3189: if (key[keysz] == '\\' || key[keysz] == '\t')
1.277 schwarze 3190: return ROFF_IGN;
1.89 kristaps 3191:
1.187 schwarze 3192: sign = *val;
1.238 schwarze 3193: if (sign == '+' || sign == '-')
1.187 schwarze 3194: val++;
3195:
1.327 schwarze 3196: len = 0;
3197: if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
3198: return ROFF_IGN;
3199:
3200: step = val + len;
3201: while (isspace((unsigned char)*step))
3202: step++;
3203: if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)
3204: is = INT_MIN;
1.109 kristaps 3205:
1.327 schwarze 3206: roff_setregn(r, key, keysz, iv, sign, is);
1.277 schwarze 3207: return ROFF_IGN;
1.203 schwarze 3208: }
3209:
1.340 schwarze 3210: static int
1.203 schwarze 3211: roff_rr(ROFF_ARGS)
3212: {
3213: struct roffreg *reg, **prev;
1.212 schwarze 3214: char *name, *cp;
3215: size_t namesz;
1.203 schwarze 3216:
1.238 schwarze 3217: name = cp = buf->buf + pos;
3218: if (*name == '\0')
1.277 schwarze 3219: return ROFF_IGN;
1.212 schwarze 3220: namesz = roff_getname(r, &cp, ln, pos);
3221: name[namesz] = '\0';
1.203 schwarze 3222:
3223: prev = &r->regtab;
3224: while (1) {
3225: reg = *prev;
1.238 schwarze 3226: if (reg == NULL || !strcmp(name, reg->key.p))
1.203 schwarze 3227: break;
3228: prev = ®->next;
3229: }
1.238 schwarze 3230: if (reg != NULL) {
1.203 schwarze 3231: *prev = reg->next;
3232: free(reg->key.p);
3233: free(reg);
3234: }
1.277 schwarze 3235: return ROFF_IGN;
1.122 schwarze 3236: }
3237:
1.266 schwarze 3238: /* --- handler functions for roff requests -------------------------------- */
3239:
1.340 schwarze 3240: static int
1.122 schwarze 3241: roff_rm(ROFF_ARGS)
3242: {
3243: const char *name;
3244: char *cp;
1.212 schwarze 3245: size_t namesz;
1.122 schwarze 3246:
1.238 schwarze 3247: cp = buf->buf + pos;
3248: while (*cp != '\0') {
1.212 schwarze 3249: name = cp;
1.238 schwarze 3250: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.212 schwarze 3251: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.311 schwarze 3252: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.363 schwarze 3253: if (name[namesz] == '\\' || name[namesz] == '\t')
1.212 schwarze 3254: break;
1.122 schwarze 3255: }
1.277 schwarze 3256: return ROFF_IGN;
1.178 schwarze 3257: }
3258:
1.340 schwarze 3259: static int
1.178 schwarze 3260: roff_it(ROFF_ARGS)
3261: {
3262: int iv;
3263:
3264: /* Parse the number of lines. */
1.261 schwarze 3265:
3266: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.350 schwarze 3267: mandoc_msg(MANDOCERR_IT_NONUM,
3268: ln, ppos, "%s", buf->buf + 1);
1.277 schwarze 3269: return ROFF_IGN;
1.178 schwarze 3270: }
3271:
1.262 schwarze 3272: while (isspace((unsigned char)buf->buf[pos]))
3273: pos++;
3274:
3275: /*
3276: * Arm the input line trap.
3277: * Special-casing "an-trap" is an ugly workaround to cope
3278: * with DocBook stupidly fiddling with man(7) internals.
3279: */
1.261 schwarze 3280:
1.178 schwarze 3281: roffit_lines = iv;
1.262 schwarze 3282: roffit_macro = mandoc_strdup(iv != 1 ||
3283: strcmp(buf->buf + pos, "an-trap") ?
3284: buf->buf + pos : "br");
1.277 schwarze 3285: return ROFF_IGN;
1.175 schwarze 3286: }
3287:
1.340 schwarze 3288: static int
1.175 schwarze 3289: roff_Dd(ROFF_ARGS)
3290: {
1.315 schwarze 3291: int mask;
3292: enum roff_tok t, te;
1.227 schwarze 3293:
1.315 schwarze 3294: switch (tok) {
3295: case ROFF_Dd:
3296: tok = MDOC_Dd;
3297: te = MDOC_MAX;
3298: if (r->format == 0)
3299: r->format = MPARSE_MDOC;
3300: mask = MPARSE_MDOC | MPARSE_QUICK;
3301: break;
3302: case ROFF_TH:
3303: tok = MAN_TH;
3304: te = MAN_MAX;
3305: if (r->format == 0)
3306: r->format = MPARSE_MAN;
3307: mask = MPARSE_QUICK;
3308: break;
3309: default:
3310: abort();
3311: }
3312: if ((r->options & mask) == 0)
3313: for (t = tok; t < te; t++)
3314: roff_setstr(r, roff_name[t], NULL, 0);
1.277 schwarze 3315: return ROFF_CONT;
1.109 kristaps 3316: }
3317:
1.340 schwarze 3318: static int
1.109 kristaps 3319: roff_TE(ROFF_ARGS)
3320: {
1.361 schwarze 3321: r->man->flags &= ~ROFF_NONOFILL;
1.321 schwarze 3322: if (r->tbl == NULL) {
1.350 schwarze 3323: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "TE");
1.321 schwarze 3324: return ROFF_IGN;
3325: }
1.346 schwarze 3326: if (tbl_end(r->tbl, 0) == 0) {
1.321 schwarze 3327: r->tbl = NULL;
1.258 schwarze 3328: free(buf->buf);
3329: buf->buf = mandoc_strdup(".sp");
3330: buf->sz = 4;
1.329 schwarze 3331: *offs = 0;
1.277 schwarze 3332: return ROFF_REPARSE;
1.258 schwarze 3333: }
1.321 schwarze 3334: r->tbl = NULL;
1.277 schwarze 3335: return ROFF_IGN;
1.112 kristaps 3336: }
3337:
1.340 schwarze 3338: static int
1.112 kristaps 3339: roff_T_(ROFF_ARGS)
3340: {
3341:
3342: if (NULL == r->tbl)
1.350 schwarze 3343: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "T&");
1.112 kristaps 3344: else
1.296 schwarze 3345: tbl_restart(ln, ppos, r->tbl);
1.112 kristaps 3346:
1.277 schwarze 3347: return ROFF_IGN;
1.109 kristaps 3348: }
3349:
1.230 schwarze 3350: /*
3351: * Handle in-line equation delimiters.
3352: */
1.340 schwarze 3353: static int
1.238 schwarze 3354: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.151 kristaps 3355: {
1.233 schwarze 3356: char *cp1, *cp2;
3357: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.151 kristaps 3358:
1.230 schwarze 3359: /*
3360: * Outside equations, look for an opening delimiter.
3361: * If we are inside an equation, we already know it is
3362: * in-line, or this function wouldn't have been called;
3363: * so look for a closing delimiter.
3364: */
3365:
1.238 schwarze 3366: cp1 = buf->buf + pos;
1.230 schwarze 3367: cp2 = strchr(cp1, r->eqn == NULL ?
3368: r->last_eqn->odelim : r->last_eqn->cdelim);
3369: if (cp2 == NULL)
1.277 schwarze 3370: return ROFF_CONT;
1.230 schwarze 3371:
1.233 schwarze 3372: *cp2++ = '\0';
3373: bef_pr = bef_nl = aft_nl = aft_pr = "";
3374:
3375: /* Handle preceding text, protecting whitespace. */
3376:
1.238 schwarze 3377: if (*buf->buf != '\0') {
1.233 schwarze 3378: if (r->eqn == NULL)
3379: bef_pr = "\\&";
3380: bef_nl = "\n";
3381: }
3382:
3383: /*
3384: * Prepare replacing the delimiter with an equation macro
3385: * and drop leading white space from the equation.
3386: */
1.230 schwarze 3387:
1.233 schwarze 3388: if (r->eqn == NULL) {
3389: while (*cp2 == ' ')
3390: cp2++;
3391: mac = ".EQ";
3392: } else
3393: mac = ".EN";
3394:
3395: /* Handle following text, protecting whitespace. */
3396:
3397: if (*cp2 != '\0') {
3398: aft_nl = "\n";
3399: if (r->eqn != NULL)
3400: aft_pr = "\\&";
3401: }
3402:
3403: /* Do the actual replacement. */
3404:
1.238 schwarze 3405: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.233 schwarze 3406: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.238 schwarze 3407: free(buf->buf);
3408: buf->buf = cp1;
1.230 schwarze 3409:
3410: /* Toggle the in-line state of the eqn subsystem. */
3411:
3412: r->eqn_inline = r->eqn == NULL;
1.277 schwarze 3413: return ROFF_REPARSE;
1.151 kristaps 3414: }
3415:
1.340 schwarze 3416: static int
1.235 schwarze 3417: roff_EQ(ROFF_ARGS)
1.125 kristaps 3418: {
1.319 schwarze 3419: struct roff_node *n;
3420:
1.356 schwarze 3421: if (r->man->meta.macroset == MACROSET_MAN)
1.322 schwarze 3422: man_breakscope(r->man, ROFF_EQ);
1.319 schwarze 3423: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
3424: if (ln > r->man->last->line)
3425: n->flags |= NODE_LINE;
1.348 schwarze 3426: n->eqn = eqn_box_new();
1.319 schwarze 3427: roff_node_append(r->man, n);
3428: r->man->next = ROFF_NEXT_SIBLING;
1.125 kristaps 3429:
1.238 schwarze 3430: assert(r->eqn == NULL);
1.319 schwarze 3431: if (r->last_eqn == NULL)
1.351 schwarze 3432: r->last_eqn = eqn_alloc();
1.319 schwarze 3433: else
3434: eqn_reset(r->last_eqn);
3435: r->eqn = r->last_eqn;
3436: r->eqn->node = n;
1.151 kristaps 3437:
1.238 schwarze 3438: if (buf->buf[pos] != '\0')
1.350 schwarze 3439: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.238 schwarze 3440: ".EQ %s", buf->buf + pos);
1.151 kristaps 3441:
1.277 schwarze 3442: return ROFF_IGN;
1.125 kristaps 3443: }
3444:
1.340 schwarze 3445: static int
1.125 kristaps 3446: roff_EN(ROFF_ARGS)
3447: {
1.319 schwarze 3448: if (r->eqn != NULL) {
3449: eqn_parse(r->eqn);
3450: r->eqn = NULL;
3451: } else
1.350 schwarze 3452: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "EN");
1.319 schwarze 3453: if (buf->buf[pos] != '\0')
1.350 schwarze 3454: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.319 schwarze 3455: "EN %s", buf->buf + pos);
1.277 schwarze 3456: return ROFF_IGN;
1.125 kristaps 3457: }
3458:
1.340 schwarze 3459: static int
1.109 kristaps 3460: roff_TS(ROFF_ARGS)
3461: {
1.321 schwarze 3462: if (r->tbl != NULL) {
1.350 schwarze 3463: mandoc_msg(MANDOCERR_BLK_BROKEN, ln, ppos, "TS breaks TS");
1.346 schwarze 3464: tbl_end(r->tbl, 0);
1.115 kristaps 3465: }
1.361 schwarze 3466: r->man->flags |= ROFF_NONOFILL;
1.351 schwarze 3467: r->tbl = tbl_alloc(ppos, ln, r->last_tbl);
1.346 schwarze 3468: if (r->last_tbl == NULL)
1.321 schwarze 3469: r->first_tbl = r->tbl;
3470: r->last_tbl = r->tbl;
1.297 schwarze 3471: return ROFF_IGN;
3472: }
3473:
1.340 schwarze 3474: static int
1.358 schwarze 3475: roff_noarg(ROFF_ARGS)
3476: {
3477: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3478: man_breakscope(r->man, tok);
3479: if (tok == ROFF_brp)
3480: tok = ROFF_br;
3481: roff_elem_alloc(r->man, ln, ppos, tok);
3482: if (buf->buf[pos] != '\0')
3483: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
3484: "%s %s", roff_name[tok], buf->buf + pos);
3485: if (tok == ROFF_nf)
3486: r->man->flags |= ROFF_NOFILL;
3487: else if (tok == ROFF_fi)
3488: r->man->flags &= ~ROFF_NOFILL;
3489: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3490: r->man->next = ROFF_NEXT_SIBLING;
3491: return ROFF_IGN;
3492: }
3493:
3494: static int
1.297 schwarze 3495: roff_onearg(ROFF_ARGS)
3496: {
3497: struct roff_node *n;
3498: char *cp;
1.305 schwarze 3499: int npos;
1.297 schwarze 3500:
1.302 schwarze 3501: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.320 schwarze 3502: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
3503: tok == ROFF_ti))
1.302 schwarze 3504: man_breakscope(r->man, tok);
3505:
1.309 schwarze 3506: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.305 schwarze 3507: r->man->last = roffce_node;
3508: r->man->next = ROFF_NEXT_SIBLING;
3509: }
3510:
1.297 schwarze 3511: roff_elem_alloc(r->man, ln, ppos, tok);
3512: n = r->man->last;
3513:
3514: cp = buf->buf + pos;
3515: if (*cp != '\0') {
3516: while (*cp != '\0' && *cp != ' ')
3517: cp++;
3518: while (*cp == ' ')
3519: *cp++ = '\0';
3520: if (*cp != '\0')
1.350 schwarze 3521: mandoc_msg(MANDOCERR_ARG_EXCESS,
3522: ln, (int)(cp - buf->buf),
1.297 schwarze 3523: "%s ... %s", roff_name[tok], cp);
3524: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.300 schwarze 3525: }
3526:
1.309 schwarze 3527: if (tok == ROFF_ce || tok == ROFF_rj) {
3528: if (r->man->last->type == ROFFT_ELEM) {
1.305 schwarze 3529: roff_word_alloc(r->man, ln, pos, "1");
3530: r->man->last->flags |= NODE_NOSRC;
3531: }
3532: npos = 0;
3533: if (roff_evalnum(r, ln, r->man->last->string, &npos,
3534: &roffce_lines, 0) == 0) {
1.350 schwarze 3535: mandoc_msg(MANDOCERR_CE_NONUM,
3536: ln, pos, "ce %s", buf->buf + pos);
1.305 schwarze 3537: roffce_lines = 1;
3538: }
3539: if (roffce_lines < 1) {
3540: r->man->last = r->man->last->parent;
3541: roffce_node = NULL;
3542: roffce_lines = 0;
3543: } else
3544: roffce_node = r->man->last->parent;
3545: } else {
3546: n->flags |= NODE_VALID | NODE_ENDED;
3547: r->man->last = n;
3548: }
3549: n->flags |= NODE_LINE;
1.300 schwarze 3550: r->man->next = ROFF_NEXT_SIBLING;
3551: return ROFF_IGN;
3552: }
3553:
1.340 schwarze 3554: static int
1.300 schwarze 3555: roff_manyarg(ROFF_ARGS)
3556: {
3557: struct roff_node *n;
3558: char *sp, *ep;
3559:
3560: roff_elem_alloc(r->man, ln, ppos, tok);
3561: n = r->man->last;
3562:
3563: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3564: while (*ep != '\0' && *ep != ' ')
3565: ep++;
3566: while (*ep == ' ')
3567: *ep++ = '\0';
3568: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.297 schwarze 3569: }
3570:
3571: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3572: r->man->last = n;
3573: r->man->next = ROFF_NEXT_SIBLING;
1.277 schwarze 3574: return ROFF_IGN;
1.251 schwarze 3575: }
3576:
1.340 schwarze 3577: static int
1.311 schwarze 3578: roff_als(ROFF_ARGS)
3579: {
3580: char *oldn, *newn, *end, *value;
3581: size_t oldsz, newsz, valsz;
3582:
3583: newn = oldn = buf->buf + pos;
3584: if (*newn == '\0')
3585: return ROFF_IGN;
3586:
3587: newsz = roff_getname(r, &oldn, ln, pos);
1.363 schwarze 3588: if (newn[newsz] == '\\' || newn[newsz] == '\t' || *oldn == '\0')
1.311 schwarze 3589: return ROFF_IGN;
3590:
3591: end = oldn;
3592: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3593: if (oldsz == 0)
3594: return ROFF_IGN;
3595:
1.338 schwarze 3596: valsz = mandoc_asprintf(&value, ".%.*s \\$@\\\"\n",
1.315 schwarze 3597: (int)oldsz, oldn);
1.311 schwarze 3598: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3599: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3600: free(value);
1.364 schwarze 3601: return ROFF_IGN;
3602: }
3603:
3604: /*
3605: * The .break request only makes sense inside conditionals,
3606: * and that case is already handled in roff_cond_sub().
3607: */
3608: static int
3609: roff_break(ROFF_ARGS)
3610: {
3611: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, pos, "break");
1.296 schwarze 3612: return ROFF_IGN;
1.92 schwarze 3613: }
3614:
1.340 schwarze 3615: static int
1.174 kristaps 3616: roff_cc(ROFF_ARGS)
3617: {
3618: const char *p;
3619:
1.238 schwarze 3620: p = buf->buf + pos;
1.174 kristaps 3621:
1.238 schwarze 3622: if (*p == '\0' || (r->control = *p++) == '.')
1.303 schwarze 3623: r->control = '\0';
1.174 kristaps 3624:
1.238 schwarze 3625: if (*p != '\0')
1.350 schwarze 3626: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.260 schwarze 3627: ln, p - buf->buf, "cc ... %s", p);
1.174 kristaps 3628:
1.341 schwarze 3629: return ROFF_IGN;
3630: }
3631:
3632: static int
3633: roff_char(ROFF_ARGS)
3634: {
3635: const char *p, *kp, *vp;
3636: size_t ksz, vsz;
3637: int font;
3638:
3639: /* Parse the character to be replaced. */
3640:
3641: kp = buf->buf + pos;
3642: p = kp + 1;
3643: if (*kp == '\0' || (*kp == '\\' &&
3644: mandoc_escape(&p, NULL, NULL) != ESCAPE_SPECIAL) ||
3645: (*p != ' ' && *p != '\0')) {
1.350 schwarze 3646: mandoc_msg(MANDOCERR_CHAR_ARG, ln, pos, "char %s", kp);
1.341 schwarze 3647: return ROFF_IGN;
3648: }
3649: ksz = p - kp;
3650: while (*p == ' ')
3651: p++;
3652:
3653: /*
3654: * If the replacement string contains a font escape sequence,
3655: * we have to restore the font at the end.
3656: */
3657:
3658: vp = p;
3659: vsz = strlen(p);
3660: font = 0;
3661: while (*p != '\0') {
3662: if (*p++ != '\\')
3663: continue;
3664: switch (mandoc_escape(&p, NULL, NULL)) {
3665: case ESCAPE_FONT:
3666: case ESCAPE_FONTROMAN:
3667: case ESCAPE_FONTITALIC:
3668: case ESCAPE_FONTBOLD:
3669: case ESCAPE_FONTBI:
1.378 schwarze 3670: case ESCAPE_FONTCR:
3671: case ESCAPE_FONTCB:
3672: case ESCAPE_FONTCI:
1.341 schwarze 3673: case ESCAPE_FONTPREV:
3674: font++;
3675: break;
3676: default:
3677: break;
3678: }
3679: }
3680: if (font > 1)
1.350 schwarze 3681: mandoc_msg(MANDOCERR_CHAR_FONT,
3682: ln, (int)(vp - buf->buf), "%s", vp);
1.341 schwarze 3683:
3684: /*
3685: * Approximate the effect of .char using the .tr tables.
3686: * XXX In groff, .char and .tr interact differently.
3687: */
3688:
3689: if (ksz == 1) {
3690: if (r->xtab == NULL)
3691: r->xtab = mandoc_calloc(128, sizeof(*r->xtab));
3692: assert((unsigned int)*kp < 128);
3693: free(r->xtab[(int)*kp].p);
3694: r->xtab[(int)*kp].sz = mandoc_asprintf(&r->xtab[(int)*kp].p,
3695: "%s%s", vp, font ? "\fP" : "");
3696: } else {
3697: roff_setstrn(&r->xmbtab, kp, ksz, vp, vsz, 0);
3698: if (font)
3699: roff_setstrn(&r->xmbtab, kp, ksz, "\\fP", 3, 1);
3700: }
1.277 schwarze 3701: return ROFF_IGN;
1.174 kristaps 3702: }
3703:
1.340 schwarze 3704: static int
1.303 schwarze 3705: roff_ec(ROFF_ARGS)
3706: {
3707: const char *p;
3708:
3709: p = buf->buf + pos;
3710: if (*p == '\0')
3711: r->escape = '\\';
3712: else {
3713: r->escape = *p;
3714: if (*++p != '\0')
1.350 schwarze 3715: mandoc_msg(MANDOCERR_ARG_EXCESS, ln,
3716: (int)(p - buf->buf), "ec ... %s", p);
1.303 schwarze 3717: }
3718: return ROFF_IGN;
3719: }
3720:
1.340 schwarze 3721: static int
1.303 schwarze 3722: roff_eo(ROFF_ARGS)
3723: {
3724: r->escape = '\0';
3725: if (buf->buf[pos] != '\0')
1.350 schwarze 3726: mandoc_msg(MANDOCERR_ARG_SKIP,
1.303 schwarze 3727: ln, pos, "eo %s", buf->buf + pos);
3728: return ROFF_IGN;
1.330 schwarze 3729: }
3730:
1.340 schwarze 3731: static int
1.330 schwarze 3732: roff_nop(ROFF_ARGS)
3733: {
3734: while (buf->buf[pos] == ' ')
3735: pos++;
3736: *offs = pos;
3737: return ROFF_RERUN;
1.303 schwarze 3738: }
3739:
1.340 schwarze 3740: static int
1.164 kristaps 3741: roff_tr(ROFF_ARGS)
3742: {
3743: const char *p, *first, *second;
3744: size_t fsz, ssz;
3745: enum mandoc_esc esc;
3746:
1.238 schwarze 3747: p = buf->buf + pos;
1.164 kristaps 3748:
1.238 schwarze 3749: if (*p == '\0') {
1.350 schwarze 3750: mandoc_msg(MANDOCERR_REQ_EMPTY, ln, ppos, "tr");
1.277 schwarze 3751: return ROFF_IGN;
1.164 kristaps 3752: }
3753:
1.238 schwarze 3754: while (*p != '\0') {
1.164 kristaps 3755: fsz = ssz = 1;
3756:
3757: first = p++;
1.238 schwarze 3758: if (*first == '\\') {
1.164 kristaps 3759: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3760: if (esc == ESCAPE_ERROR) {
1.350 schwarze 3761: mandoc_msg(MANDOCERR_ESC_BAD, ln,
3762: (int)(p - buf->buf), "%s", first);
1.277 schwarze 3763: return ROFF_IGN;
1.164 kristaps 3764: }
3765: fsz = (size_t)(p - first);
3766: }
3767:
3768: second = p++;
1.238 schwarze 3769: if (*second == '\\') {
1.164 kristaps 3770: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3771: if (esc == ESCAPE_ERROR) {
1.350 schwarze 3772: mandoc_msg(MANDOCERR_ESC_BAD, ln,
3773: (int)(p - buf->buf), "%s", second);
1.277 schwarze 3774: return ROFF_IGN;
1.164 kristaps 3775: }
3776: ssz = (size_t)(p - second);
1.238 schwarze 3777: } else if (*second == '\0') {
1.350 schwarze 3778: mandoc_msg(MANDOCERR_TR_ODD, ln,
3779: (int)(first - buf->buf), "tr %s", first);
1.164 kristaps 3780: second = " ";
1.165 kristaps 3781: p--;
1.164 kristaps 3782: }
3783:
1.167 kristaps 3784: if (fsz > 1) {
1.207 schwarze 3785: roff_setstrn(&r->xmbtab, first, fsz,
3786: second, ssz, 0);
1.167 kristaps 3787: continue;
3788: }
3789:
1.238 schwarze 3790: if (r->xtab == NULL)
1.207 schwarze 3791: r->xtab = mandoc_calloc(128,
3792: sizeof(struct roffstr));
1.167 kristaps 3793:
3794: free(r->xtab[(int)*first].p);
3795: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3796: r->xtab[(int)*first].sz = ssz;
1.164 kristaps 3797: }
3798:
1.277 schwarze 3799: return ROFF_IGN;
1.164 kristaps 3800: }
3801:
1.339 schwarze 3802: /*
3803: * Implementation of the .return request.
3804: * There is no need to call roff_userret() from here.
3805: * The read module will call that after rewinding the reader stack
3806: * to the place from where the current macro was called.
3807: */
1.340 schwarze 3808: static int
1.339 schwarze 3809: roff_return(ROFF_ARGS)
3810: {
3811: if (r->mstackpos >= 0)
1.340 schwarze 3812: return ROFF_IGN | ROFF_USERRET;
1.339 schwarze 3813:
1.350 schwarze 3814: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "return");
1.339 schwarze 3815: return ROFF_IGN;
3816: }
3817:
1.340 schwarze 3818: static int
1.306 schwarze 3819: roff_rn(ROFF_ARGS)
3820: {
3821: const char *value;
3822: char *oldn, *newn, *end;
3823: size_t oldsz, newsz;
1.315 schwarze 3824: int deftype;
1.306 schwarze 3825:
3826: oldn = newn = buf->buf + pos;
3827: if (*oldn == '\0')
3828: return ROFF_IGN;
3829:
3830: oldsz = roff_getname(r, &newn, ln, pos);
1.363 schwarze 3831: if (oldn[oldsz] == '\\' || oldn[oldsz] == '\t' || *newn == '\0')
1.306 schwarze 3832: return ROFF_IGN;
3833:
3834: end = newn;
3835: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3836: if (newsz == 0)
3837: return ROFF_IGN;
3838:
1.315 schwarze 3839: deftype = ROFFDEF_ANY;
3840: value = roff_getstrn(r, oldn, oldsz, &deftype);
3841: switch (deftype) {
3842: case ROFFDEF_USER:
1.306 schwarze 3843: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3844: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3845: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.315 schwarze 3846: break;
3847: case ROFFDEF_PRE:
3848: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3849: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3850: break;
3851: case ROFFDEF_REN:
1.306 schwarze 3852: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3853: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.315 schwarze 3854: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3855: break;
3856: case ROFFDEF_STD:
1.306 schwarze 3857: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.315 schwarze 3858: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3859: break;
3860: default:
3861: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3862: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3863: break;
3864: }
1.306 schwarze 3865: return ROFF_IGN;
3866: }
3867:
1.340 schwarze 3868: static int
1.339 schwarze 3869: roff_shift(ROFF_ARGS)
3870: {
3871: struct mctx *ctx;
3872: int levels, i;
3873:
3874: levels = 1;
3875: if (buf->buf[pos] != '\0' &&
3876: roff_evalnum(r, ln, buf->buf, &pos, &levels, 0) == 0) {
1.350 schwarze 3877: mandoc_msg(MANDOCERR_CE_NONUM,
1.339 schwarze 3878: ln, pos, "shift %s", buf->buf + pos);
3879: levels = 1;
3880: }
3881: if (r->mstackpos < 0) {
1.350 schwarze 3882: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "shift");
1.339 schwarze 3883: return ROFF_IGN;
3884: }
3885: ctx = r->mstack + r->mstackpos;
3886: if (levels > ctx->argc) {
1.350 schwarze 3887: mandoc_msg(MANDOCERR_SHIFT,
1.339 schwarze 3888: ln, pos, "%d, but max is %d", levels, ctx->argc);
3889: levels = ctx->argc;
3890: }
3891: if (levels == 0)
3892: return ROFF_IGN;
3893: for (i = 0; i < levels; i++)
3894: free(ctx->argv[i]);
3895: ctx->argc -= levels;
3896: for (i = 0; i < ctx->argc; i++)
3897: ctx->argv[i] = ctx->argv[i + levels];
3898: return ROFF_IGN;
3899: }
3900:
1.340 schwarze 3901: static int
1.105 kristaps 3902: roff_so(ROFF_ARGS)
3903: {
1.249 schwarze 3904: char *name, *cp;
1.105 kristaps 3905:
1.238 schwarze 3906: name = buf->buf + pos;
1.350 schwarze 3907: mandoc_msg(MANDOCERR_SO, ln, ppos, "so %s", name);
1.105 kristaps 3908:
3909: /*
3910: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3911: * opening anything that's not in our cwd or anything beneath
3912: * it. Thus, explicitly disallow traversing up the file-system
3913: * or using absolute paths.
3914: */
3915:
1.238 schwarze 3916: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.350 schwarze 3917: mandoc_msg(MANDOCERR_SO_PATH, ln, ppos, ".so %s", name);
1.249 schwarze 3918: buf->sz = mandoc_asprintf(&cp,
3919: ".sp\nSee the file %s.\n.sp", name) + 1;
3920: free(buf->buf);
3921: buf->buf = cp;
3922: *offs = 0;
1.277 schwarze 3923: return ROFF_REPARSE;
1.105 kristaps 3924: }
3925:
3926: *offs = pos;
1.277 schwarze 3927: return ROFF_SO;
1.105 kristaps 3928: }
1.92 schwarze 3929:
1.266 schwarze 3930: /* --- user defined strings and macros ------------------------------------ */
3931:
1.340 schwarze 3932: static int
1.106 kristaps 3933: roff_userdef(ROFF_ARGS)
1.99 kristaps 3934: {
1.339 schwarze 3935: struct mctx *ctx;
3936: char *arg, *ap, *dst, *src;
3937: size_t sz;
3938:
1.365 schwarze 3939: /* If the macro is empty, ignore it altogether. */
3940:
3941: if (*r->current_string == '\0')
3942: return ROFF_IGN;
3943:
1.339 schwarze 3944: /* Initialize a new macro stack context. */
3945:
3946: if (++r->mstackpos == r->mstacksz) {
3947: r->mstack = mandoc_recallocarray(r->mstack,
3948: r->mstacksz, r->mstacksz + 8, sizeof(*r->mstack));
3949: r->mstacksz += 8;
3950: }
3951: ctx = r->mstack + r->mstackpos;
3952: ctx->argc = 0;
3953:
3954: /*
3955: * Collect pointers to macro argument strings,
3956: * NUL-terminating them and escaping quotes.
3957: */
3958:
3959: src = buf->buf + pos;
3960: while (*src != '\0') {
3961: if (ctx->argc == ctx->argsz) {
3962: ctx->argsz += 8;
3963: ctx->argv = mandoc_reallocarray(ctx->argv,
3964: ctx->argsz, sizeof(*ctx->argv));
3965: }
1.355 schwarze 3966: arg = roff_getarg(r, &src, ln, &pos);
1.339 schwarze 3967: sz = 1; /* For the terminating NUL. */
3968: for (ap = arg; *ap != '\0'; ap++)
3969: sz += *ap == '"' ? 4 : 1;
3970: ctx->argv[ctx->argc++] = dst = mandoc_malloc(sz);
3971: for (ap = arg; *ap != '\0'; ap++) {
3972: if (*ap == '"') {
3973: memcpy(dst, "\\(dq", 4);
3974: dst += 4;
3975: } else
3976: *dst++ = *ap;
1.106 kristaps 3977: }
1.339 schwarze 3978: *dst = '\0';
1.355 schwarze 3979: free(arg);
1.337 schwarze 3980: }
3981:
1.339 schwarze 3982: /* Replace the macro invocation by the macro definition. */
1.263 schwarze 3983:
1.238 schwarze 3984: free(buf->buf);
1.339 schwarze 3985: buf->buf = mandoc_strdup(r->current_string);
3986: buf->sz = strlen(buf->buf) + 1;
1.248 schwarze 3987: *offs = 0;
1.106 kristaps 3988:
1.365 schwarze 3989: return buf->buf[buf->sz - 2] == '\n' ?
1.340 schwarze 3990: ROFF_REPARSE | ROFF_USERCALL : ROFF_IGN | ROFF_APPEND;
1.99 kristaps 3991: }
1.121 schwarze 3992:
1.306 schwarze 3993: /*
3994: * Calling a high-level macro that was renamed with .rn.
3995: * r->current_string has already been set up by roff_parse().
3996: */
1.340 schwarze 3997: static int
1.306 schwarze 3998: roff_renamed(ROFF_ARGS)
3999: {
4000: char *nbuf;
4001:
1.315 schwarze 4002: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
4003: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.306 schwarze 4004: free(buf->buf);
4005: buf->buf = nbuf;
1.329 schwarze 4006: *offs = 0;
1.306 schwarze 4007: return ROFF_CONT;
4008: }
4009:
1.362 schwarze 4010: /*
4011: * Measure the length in bytes of the roff identifier at *cpp
4012: * and advance the pointer to the next word.
4013: */
1.212 schwarze 4014: static size_t
1.121 schwarze 4015: roff_getname(struct roff *r, char **cpp, int ln, int pos)
4016: {
4017: char *name, *cp;
1.212 schwarze 4018: size_t namesz;
1.121 schwarze 4019:
4020: name = *cpp;
1.362 schwarze 4021: if (*name == '\0')
1.277 schwarze 4022: return 0;
1.121 schwarze 4023:
1.362 schwarze 4024: /* Advance cp to the byte after the end of the name. */
4025:
1.212 schwarze 4026: for (cp = name; 1; cp++) {
1.362 schwarze 4027: namesz = cp - name;
1.363 schwarze 4028: if (*cp == '\0')
1.212 schwarze 4029: break;
1.363 schwarze 4030: if (*cp == ' ' || *cp == '\t') {
4031: cp++;
4032: break;
4033: }
1.362 schwarze 4034: if (*cp != '\\')
1.121 schwarze 4035: continue;
1.362 schwarze 4036: if (cp[1] == '{' || cp[1] == '}')
1.215 schwarze 4037: break;
1.362 schwarze 4038: if (*++cp == '\\')
1.121 schwarze 4039: continue;
1.350 schwarze 4040: mandoc_msg(MANDOCERR_NAMESC, ln, pos,
1.224 schwarze 4041: "%.*s", (int)(cp - name + 1), name);
1.212 schwarze 4042: mandoc_escape((const char **)&cp, NULL, NULL);
4043: break;
1.121 schwarze 4044: }
4045:
4046: /* Read past spaces. */
1.362 schwarze 4047:
4048: while (*cp == ' ')
1.121 schwarze 4049: cp++;
4050:
4051: *cpp = cp;
1.277 schwarze 4052: return namesz;
1.121 schwarze 4053: }
4054:
1.106 kristaps 4055: /*
4056: * Store *string into the user-defined string called *name.
4057: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.193 schwarze 4058: * append == 0: replace mode
4059: * append == 1: single-line append mode
4060: * append == 2: multiline append mode, append '\n' after each call
1.106 kristaps 4061: */
1.94 kristaps 4062: static void
1.106 kristaps 4063: roff_setstr(struct roff *r, const char *name, const char *string,
1.193 schwarze 4064: int append)
1.92 schwarze 4065: {
1.315 schwarze 4066: size_t namesz;
1.164 kristaps 4067:
1.315 schwarze 4068: namesz = strlen(name);
4069: roff_setstrn(&r->strtab, name, namesz, string,
1.207 schwarze 4070: string ? strlen(string) : 0, append);
1.315 schwarze 4071: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.164 kristaps 4072: }
4073:
4074: static void
1.166 kristaps 4075: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.193 schwarze 4076: const char *string, size_t stringsz, int append)
1.164 kristaps 4077: {
1.166 kristaps 4078: struct roffkv *n;
1.164 kristaps 4079: char *c;
4080: int i;
4081: size_t oldch, newch;
1.92 schwarze 4082:
1.106 kristaps 4083: /* Search for an existing string with the same name. */
1.164 kristaps 4084: n = *r;
4085:
1.211 schwarze 4086: while (n && (namesz != n->key.sz ||
4087: strncmp(n->key.p, name, namesz)))
1.92 schwarze 4088: n = n->next;
1.94 kristaps 4089:
4090: if (NULL == n) {
1.106 kristaps 4091: /* Create a new string table entry. */
1.166 kristaps 4092: n = mandoc_malloc(sizeof(struct roffkv));
4093: n->key.p = mandoc_strndup(name, namesz);
4094: n->key.sz = namesz;
4095: n->val.p = NULL;
4096: n->val.sz = 0;
1.164 kristaps 4097: n->next = *r;
4098: *r = n;
1.193 schwarze 4099: } else if (0 == append) {
1.166 kristaps 4100: free(n->val.p);
4101: n->val.p = NULL;
4102: n->val.sz = 0;
1.106 kristaps 4103: }
4104:
4105: if (NULL == string)
4106: return;
4107:
4108: /*
4109: * One additional byte for the '\n' in multiline mode,
4110: * and one for the terminating '\0'.
4111: */
1.193 schwarze 4112: newch = stringsz + (1 < append ? 2u : 1u);
1.164 kristaps 4113:
1.166 kristaps 4114: if (NULL == n->val.p) {
4115: n->val.p = mandoc_malloc(newch);
4116: *n->val.p = '\0';
1.106 kristaps 4117: oldch = 0;
4118: } else {
1.166 kristaps 4119: oldch = n->val.sz;
4120: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.106 kristaps 4121: }
4122:
4123: /* Skip existing content in the destination buffer. */
1.166 kristaps 4124: c = n->val.p + (int)oldch;
1.106 kristaps 4125:
4126: /* Append new content to the destination buffer. */
1.164 kristaps 4127: i = 0;
4128: while (i < (int)stringsz) {
1.106 kristaps 4129: /*
4130: * Rudimentary roff copy mode:
4131: * Handle escaped backslashes.
4132: */
1.164 kristaps 4133: if ('\\' == string[i] && '\\' == string[i + 1])
4134: i++;
4135: *c++ = string[i++];
1.106 kristaps 4136: }
1.94 kristaps 4137:
1.106 kristaps 4138: /* Append terminating bytes. */
1.193 schwarze 4139: if (1 < append)
1.106 kristaps 4140: *c++ = '\n';
1.163 kristaps 4141:
1.106 kristaps 4142: *c = '\0';
1.166 kristaps 4143: n->val.sz = (int)(c - n->val.p);
1.92 schwarze 4144: }
4145:
1.94 kristaps 4146: static const char *
1.325 schwarze 4147: roff_getstrn(struct roff *r, const char *name, size_t len,
1.315 schwarze 4148: int *deftype)
1.92 schwarze 4149: {
1.315 schwarze 4150: const struct roffkv *n;
1.325 schwarze 4151: int found, i;
1.315 schwarze 4152: enum roff_tok tok;
4153:
1.325 schwarze 4154: found = 0;
4155: for (n = r->strtab; n != NULL; n = n->next) {
4156: if (strncmp(name, n->key.p, len) != 0 ||
4157: n->key.p[len] != '\0' || n->val.p == NULL)
4158: continue;
4159: if (*deftype & ROFFDEF_USER) {
4160: *deftype = ROFFDEF_USER;
4161: return n->val.p;
4162: } else {
4163: found = 1;
4164: break;
4165: }
4166: }
4167: for (n = r->rentab; n != NULL; n = n->next) {
4168: if (strncmp(name, n->key.p, len) != 0 ||
4169: n->key.p[len] != '\0' || n->val.p == NULL)
4170: continue;
4171: if (*deftype & ROFFDEF_REN) {
4172: *deftype = ROFFDEF_REN;
4173: return n->val.p;
4174: } else {
4175: found = 1;
4176: break;
1.315 schwarze 4177: }
4178: }
1.325 schwarze 4179: for (i = 0; i < PREDEFS_MAX; i++) {
4180: if (strncmp(name, predefs[i].name, len) != 0 ||
4181: predefs[i].name[len] != '\0')
4182: continue;
4183: if (*deftype & ROFFDEF_PRE) {
4184: *deftype = ROFFDEF_PRE;
4185: return predefs[i].str;
4186: } else {
4187: found = 1;
4188: break;
1.315 schwarze 4189: }
4190: }
1.356 schwarze 4191: if (r->man->meta.macroset != MACROSET_MAN) {
1.325 schwarze 4192: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
4193: if (strncmp(name, roff_name[tok], len) != 0 ||
4194: roff_name[tok][len] != '\0')
4195: continue;
4196: if (*deftype & ROFFDEF_STD) {
4197: *deftype = ROFFDEF_STD;
4198: return NULL;
4199: } else {
4200: found = 1;
4201: break;
1.315 schwarze 4202: }
4203: }
4204: }
1.356 schwarze 4205: if (r->man->meta.macroset != MACROSET_MDOC) {
1.325 schwarze 4206: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
4207: if (strncmp(name, roff_name[tok], len) != 0 ||
4208: roff_name[tok][len] != '\0')
4209: continue;
4210: if (*deftype & ROFFDEF_STD) {
4211: *deftype = ROFFDEF_STD;
4212: return NULL;
4213: } else {
4214: found = 1;
4215: break;
1.315 schwarze 4216: }
4217: }
1.325 schwarze 4218: }
4219:
4220: if (found == 0 && *deftype != ROFFDEF_ANY) {
4221: if (*deftype & ROFFDEF_REN) {
4222: /*
4223: * This might still be a request,
4224: * so do not treat it as undefined yet.
4225: */
4226: *deftype = ROFFDEF_UNDEF;
4227: return NULL;
1.315 schwarze 4228: }
1.325 schwarze 4229:
4230: /* Using an undefined string defines it to be empty. */
4231:
4232: roff_setstrn(&r->strtab, name, len, "", 0, 0);
4233: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.315 schwarze 4234: }
1.325 schwarze 4235:
1.315 schwarze 4236: *deftype = 0;
1.277 schwarze 4237: return NULL;
1.92 schwarze 4238: }
4239:
1.94 kristaps 4240: static void
1.167 kristaps 4241: roff_freestr(struct roffkv *r)
1.92 schwarze 4242: {
1.166 kristaps 4243: struct roffkv *n, *nn;
1.92 schwarze 4244:
1.167 kristaps 4245: for (n = r; n; n = nn) {
1.166 kristaps 4246: free(n->key.p);
4247: free(n->val.p);
1.92 schwarze 4248: nn = n->next;
4249: free(n);
4250: }
1.114 kristaps 4251: }
1.266 schwarze 4252:
4253: /* --- accessors and utility functions ------------------------------------ */
1.164 kristaps 4254:
4255: /*
4256: * Duplicate an input string, making the appropriate character
4257: * conversations (as stipulated by `tr') along the way.
4258: * Returns a heap-allocated string with all the replacements made.
4259: */
4260: char *
4261: roff_strdup(const struct roff *r, const char *p)
4262: {
1.166 kristaps 4263: const struct roffkv *cp;
1.164 kristaps 4264: char *res;
4265: const char *pp;
4266: size_t ssz, sz;
4267: enum mandoc_esc esc;
4268:
1.167 kristaps 4269: if (NULL == r->xmbtab && NULL == r->xtab)
1.277 schwarze 4270: return mandoc_strdup(p);
1.164 kristaps 4271: else if ('\0' == *p)
1.277 schwarze 4272: return mandoc_strdup("");
1.164 kristaps 4273:
4274: /*
4275: * Step through each character looking for term matches
4276: * (remember that a `tr' can be invoked with an escape, which is
4277: * a glyph but the escape is multi-character).
4278: * We only do this if the character hash has been initialised
4279: * and the string is >0 length.
4280: */
4281:
4282: res = NULL;
4283: ssz = 0;
4284:
4285: while ('\0' != *p) {
1.289 schwarze 4286: assert((unsigned int)*p < 128);
4287: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.167 kristaps 4288: sz = r->xtab[(int)*p].sz;
4289: res = mandoc_realloc(res, ssz + sz + 1);
4290: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
4291: ssz += sz;
4292: p++;
4293: continue;
4294: } else if ('\\' != *p) {
4295: res = mandoc_realloc(res, ssz + 2);
4296: res[ssz++] = *p++;
4297: continue;
4298: }
4299:
1.164 kristaps 4300: /* Search for term matches. */
1.167 kristaps 4301: for (cp = r->xmbtab; cp; cp = cp->next)
1.166 kristaps 4302: if (0 == strncmp(p, cp->key.p, cp->key.sz))
1.164 kristaps 4303: break;
4304:
4305: if (NULL != cp) {
4306: /*
4307: * A match has been found.
4308: * Append the match to the array and move
4309: * forward by its keysize.
4310: */
1.207 schwarze 4311: res = mandoc_realloc(res,
4312: ssz + cp->val.sz + 1);
1.166 kristaps 4313: memcpy(res + ssz, cp->val.p, cp->val.sz);
4314: ssz += cp->val.sz;
4315: p += (int)cp->key.sz;
1.164 kristaps 4316: continue;
4317: }
4318:
1.167 kristaps 4319: /*
4320: * Handle escapes carefully: we need to copy
4321: * over just the escape itself, or else we might
4322: * do replacements within the escape itself.
4323: * Make sure to pass along the bogus string.
4324: */
4325: pp = p++;
4326: esc = mandoc_escape(&p, NULL, NULL);
4327: if (ESCAPE_ERROR == esc) {
4328: sz = strlen(pp);
1.164 kristaps 4329: res = mandoc_realloc(res, ssz + sz + 1);
4330: memcpy(res + ssz, pp, sz);
1.167 kristaps 4331: break;
1.164 kristaps 4332: }
1.207 schwarze 4333: /*
4334: * We bail out on bad escapes.
1.167 kristaps 4335: * No need to warn: we already did so when
1.355 schwarze 4336: * roff_expand() was called.
1.167 kristaps 4337: */
4338: sz = (int)(p - pp);
4339: res = mandoc_realloc(res, ssz + sz + 1);
4340: memcpy(res + ssz, pp, sz);
4341: ssz += sz;
1.164 kristaps 4342: }
4343:
4344: res[(int)ssz] = '\0';
1.277 schwarze 4345: return res;
1.227 schwarze 4346: }
4347:
4348: int
4349: roff_getformat(const struct roff *r)
4350: {
4351:
1.277 schwarze 4352: return r->format;
1.174 kristaps 4353: }
4354:
4355: /*
1.207 schwarze 4356: * Find out whether a line is a macro line or not.
1.174 kristaps 4357: * If it is, adjust the current position and return one; if it isn't,
4358: * return zero and don't change the current position.
4359: * If the control character has been set with `.cc', then let that grain
4360: * precedence.
4361: * This is slighly contrary to groff, where using the non-breaking
4362: * control character when `cc' has been invoked will cause the
4363: * non-breaking macro contents to be printed verbatim.
4364: */
4365: int
4366: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
4367: {
4368: int pos;
4369:
4370: pos = *ppos;
4371:
1.303 schwarze 4372: if (r->control != '\0' && cp[pos] == r->control)
1.174 kristaps 4373: pos++;
1.303 schwarze 4374: else if (r->control != '\0')
1.277 schwarze 4375: return 0;
1.174 kristaps 4376: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
4377: pos += 2;
4378: else if ('.' == cp[pos] || '\'' == cp[pos])
4379: pos++;
4380: else
1.277 schwarze 4381: return 0;
1.174 kristaps 4382:
4383: while (' ' == cp[pos] || '\t' == cp[pos])
4384: pos++;
4385:
4386: *ppos = pos;
1.277 schwarze 4387: return 1;
1.74 kristaps 4388: }
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