Annotation of mandoc/roff.c, Revision 1.375
1.375 ! schwarze 1: /* $Id: roff.c,v 1.374 2020/04/08 11:56:03 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
1.238 schwarze 1826: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
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;
1.79 kristaps 1836:
1.230 schwarze 1837: /* Handle in-line equation delimiters. */
1838:
1.236 schwarze 1839: if (r->tbl == NULL &&
1840: r->last_eqn != NULL && r->last_eqn->delim &&
1.230 schwarze 1841: (r->eqn == NULL || r->eqn_inline)) {
1.238 schwarze 1842: e = roff_eqndelim(r, buf, pos);
1.230 schwarze 1843: if (e == ROFF_REPARSE)
1.277 schwarze 1844: return e;
1.230 schwarze 1845: assert(e == ROFF_CONT);
1846: }
1847:
1848: /* Expand some escape sequences. */
1.94 kristaps 1849:
1.355 schwarze 1850: e = roff_expand(r, buf, ln, pos, r->escape);
1.340 schwarze 1851: if ((e & ROFF_MASK) == ROFF_IGN)
1.277 schwarze 1852: return e;
1.238 schwarze 1853: assert(e == ROFF_CONT);
1.94 kristaps 1854:
1.238 schwarze 1855: ctl = roff_getcontrol(r, buf->buf, &pos);
1.130 kristaps 1856:
1.94 kristaps 1857: /*
1.79 kristaps 1858: * First, if a scope is open and we're not a macro, pass the
1.252 schwarze 1859: * text through the macro's filter.
1860: * Equations process all content themselves.
1861: * Tables process almost all content themselves, but we want
1862: * to warn about macros before passing it there.
1.79 kristaps 1863: */
1.74 kristaps 1864:
1.252 schwarze 1865: if (r->last != NULL && ! ctl) {
1.78 kristaps 1866: t = r->last->tok;
1.238 schwarze 1867: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.340 schwarze 1868: if ((e & ROFF_MASK) == ROFF_IGN)
1.277 schwarze 1869: return e;
1.340 schwarze 1870: e &= ~ROFF_MASK;
1871: } else
1872: e = ROFF_IGN;
1.319 schwarze 1873: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1874: eqn_read(r->eqn, buf->buf + ppos);
1.340 schwarze 1875: return e;
1.319 schwarze 1876: }
1.321 schwarze 1877: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1878: tbl_read(r->tbl, ln, buf->buf, ppos);
1.346 schwarze 1879: roff_addtbl(r->man, ln, r->tbl);
1.340 schwarze 1880: return e;
1.321 schwarze 1881: }
1.367 schwarze 1882: if ( ! ctl) {
1883: r->options &= ~MPARSE_COMMENT;
1.340 schwarze 1884: return roff_parsetext(r, buf, pos, offs) | e;
1.367 schwarze 1885: }
1.228 schwarze 1886:
1887: /* Skip empty request lines. */
1888:
1.238 schwarze 1889: if (buf->buf[pos] == '"') {
1.350 schwarze 1890: mandoc_msg(MANDOCERR_COMMENT_BAD, ln, pos, NULL);
1.277 schwarze 1891: return ROFF_IGN;
1.238 schwarze 1892: } else if (buf->buf[pos] == '\0')
1.277 schwarze 1893: return ROFF_IGN;
1.67 kristaps 1894:
1.79 kristaps 1895: /*
1896: * If a scope is open, go to the child handler for that macro,
1897: * as it may want to preprocess before doing anything with it.
1.125 kristaps 1898: * Don't do so if an equation is open.
1.79 kristaps 1899: */
1.78 kristaps 1900:
1.79 kristaps 1901: if (r->last) {
1902: t = r->last->tok;
1.277 schwarze 1903: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1904: }
1.78 kristaps 1905:
1.243 schwarze 1906: /* No scope is open. This is a new request or macro. */
1907:
1.367 schwarze 1908: r->options &= ~MPARSE_COMMENT;
1.243 schwarze 1909: spos = pos;
1910: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1911:
1912: /* Tables ignore most macros. */
1913:
1.308 schwarze 1914: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.309 schwarze 1915: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.350 schwarze 1916: mandoc_msg(MANDOCERR_TBLMACRO,
1917: ln, pos, "%s", buf->buf + spos);
1.308 schwarze 1918: if (t != TOKEN_NONE)
1.277 schwarze 1919: return ROFF_IGN;
1.257 schwarze 1920: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1921: pos++;
1.291 schwarze 1922: while (buf->buf[pos] == ' ')
1.257 schwarze 1923: pos++;
1.321 schwarze 1924: tbl_read(r->tbl, ln, buf->buf, pos);
1.346 schwarze 1925: roff_addtbl(r->man, ln, r->tbl);
1.321 schwarze 1926: return ROFF_IGN;
1.243 schwarze 1927: }
1928:
1.305 schwarze 1929: /* For now, let high level macros abort .ce mode. */
1930:
1931: if (ctl && roffce_node != NULL &&
1.324 schwarze 1932: (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
1933: t == ROFF_TH || t == ROFF_TS)) {
1.305 schwarze 1934: r->man->last = roffce_node;
1935: r->man->next = ROFF_NEXT_SIBLING;
1936: roffce_lines = 0;
1937: roffce_node = NULL;
1938: }
1939:
1.79 kristaps 1940: /*
1.243 schwarze 1941: * This is neither a roff request nor a user-defined macro.
1942: * Let the standard macro set parsers handle it.
1.79 kristaps 1943: */
1.67 kristaps 1944:
1.294 schwarze 1945: if (t == TOKEN_NONE)
1.277 schwarze 1946: return ROFF_CONT;
1.243 schwarze 1947:
1948: /* Execute a roff request or a user defined macro. */
1.67 kristaps 1949:
1.296 schwarze 1950: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.74 kristaps 1951: }
1952:
1.339 schwarze 1953: /*
1954: * Internal interface function to tell the roff parser that execution
1955: * of the current macro ended. This is required because macro
1956: * definitions usually do not end with a .return request.
1957: */
1958: void
1959: roff_userret(struct roff *r)
1960: {
1961: struct mctx *ctx;
1962: int i;
1963:
1964: assert(r->mstackpos >= 0);
1965: ctx = r->mstack + r->mstackpos;
1966: for (i = 0; i < ctx->argc; i++)
1967: free(ctx->argv[i]);
1968: ctx->argc = 0;
1969: r->mstackpos--;
1970: }
1971:
1.117 kristaps 1972: void
1.74 kristaps 1973: roff_endparse(struct roff *r)
1974: {
1.321 schwarze 1975: if (r->last != NULL)
1.350 schwarze 1976: mandoc_msg(MANDOCERR_BLK_NOEND, r->last->line,
1977: r->last->col, "%s", roff_name[r->last->tok]);
1.117 kristaps 1978:
1.321 schwarze 1979: if (r->eqn != NULL) {
1.350 schwarze 1980: mandoc_msg(MANDOCERR_BLK_NOEND,
1.319 schwarze 1981: r->eqn->node->line, r->eqn->node->pos, "EQ");
1982: eqn_parse(r->eqn);
1983: r->eqn = NULL;
1.125 kristaps 1984: }
1985:
1.321 schwarze 1986: if (r->tbl != NULL) {
1.346 schwarze 1987: tbl_end(r->tbl, 1);
1.321 schwarze 1988: r->tbl = NULL;
1.117 kristaps 1989: }
1.67 kristaps 1990: }
1991:
1992: /*
1993: * Parse a roff node's type from the input buffer. This must be in the
1994: * form of ".foo xxx" in the usual way.
1995: */
1.294 schwarze 1996: static enum roff_tok
1.214 schwarze 1997: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.67 kristaps 1998: {
1.214 schwarze 1999: char *cp;
1.106 kristaps 2000: const char *mac;
2001: size_t maclen;
1.315 schwarze 2002: int deftype;
1.294 schwarze 2003: enum roff_tok t;
1.67 kristaps 2004:
1.214 schwarze 2005: cp = buf + *pos;
2006:
2007: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.294 schwarze 2008: return TOKEN_NONE;
1.67 kristaps 2009:
1.214 schwarze 2010: mac = cp;
2011: maclen = roff_getname(r, &cp, ln, ppos);
1.67 kristaps 2012:
1.315 schwarze 2013: deftype = ROFFDEF_USER | ROFFDEF_REN;
2014: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
2015: switch (deftype) {
2016: case ROFFDEF_USER:
2017: t = ROFF_USERDEF;
2018: break;
2019: case ROFFDEF_REN:
2020: t = ROFF_RENAMED;
2021: break;
2022: default:
2023: t = roffhash_find(r->reqtab, mac, maclen);
2024: break;
2025: }
1.294 schwarze 2026: if (t != TOKEN_NONE)
1.214 schwarze 2027: *pos = cp - buf;
1.325 schwarze 2028: else if (deftype == ROFFDEF_UNDEF) {
2029: /* Using an undefined macro defines it to be empty. */
2030: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
2031: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
2032: }
1.277 schwarze 2033: return t;
1.67 kristaps 2034: }
2035:
1.266 schwarze 2036: /* --- handling of request blocks ----------------------------------------- */
2037:
1.375 ! schwarze 2038: /*
! 2039: * Close a macro definition block or an "ignore" block.
! 2040: */
1.340 schwarze 2041: static int
1.76 kristaps 2042: roff_cblock(ROFF_ARGS)
1.67 kristaps 2043: {
1.375 ! schwarze 2044: int rr;
1.79 kristaps 2045:
1.238 schwarze 2046: if (r->last == NULL) {
1.350 schwarze 2047: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.277 schwarze 2048: return ROFF_IGN;
1.76 kristaps 2049: }
1.67 kristaps 2050:
1.81 kristaps 2051: switch (r->last->tok) {
1.207 schwarze 2052: case ROFF_am:
2053: case ROFF_ami:
2054: case ROFF_de:
2055: case ROFF_dei:
2056: case ROFF_ig:
1.81 kristaps 2057: break;
1.375 ! schwarze 2058: case ROFF_am1:
! 2059: case ROFF_de1:
! 2060: /* Remapped in roff_block(). */
! 2061: abort();
1.81 kristaps 2062: default:
1.350 schwarze 2063: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.277 schwarze 2064: return ROFF_IGN;
1.76 kristaps 2065: }
1.67 kristaps 2066:
1.375 ! schwarze 2067: roffnode_pop(r);
! 2068: roffnode_cleanscope(r);
! 2069:
! 2070: /*
! 2071: * If a conditional block with braces is still open,
! 2072: * check for "\}" block end markers.
! 2073: */
! 2074:
! 2075: if (r->last != NULL && r->last->endspan < 0) {
! 2076: rr = 1; /* If arguments follow "\}", warn about them. */
! 2077: roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
! 2078: }
! 2079:
1.238 schwarze 2080: if (buf->buf[pos] != '\0')
1.350 schwarze 2081: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.238 schwarze 2082: ".. %s", buf->buf + pos);
1.71 kristaps 2083:
1.277 schwarze 2084: return ROFF_IGN;
1.67 kristaps 2085: }
2086:
1.364 schwarze 2087: /*
2088: * Pop all nodes ending at the end of the current input line.
2089: * Return the number of loops ended.
2090: */
1.340 schwarze 2091: static int
1.76 kristaps 2092: roffnode_cleanscope(struct roff *r)
1.67 kristaps 2093: {
1.340 schwarze 2094: int inloop;
1.67 kristaps 2095:
1.340 schwarze 2096: inloop = 0;
1.375 ! schwarze 2097: while (r->last != NULL && r->last->endspan > 0) {
1.173 schwarze 2098: if (--r->last->endspan != 0)
1.76 kristaps 2099: break;
1.340 schwarze 2100: inloop += roffnode_pop(r);
1.76 kristaps 2101: }
1.340 schwarze 2102: return inloop;
1.67 kristaps 2103: }
2104:
1.364 schwarze 2105: /*
1.375 ! schwarze 2106: * Handle the closing "\}" of a conditional block.
1.364 schwarze 2107: * Apart from generating warnings, this only pops nodes.
2108: * Return the number of loops ended.
2109: */
1.340 schwarze 2110: static int
1.195 schwarze 2111: roff_ccond(struct roff *r, int ln, int ppos)
1.74 kristaps 2112: {
1.76 kristaps 2113: if (NULL == r->last) {
1.350 schwarze 2114: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 2115: return 0;
1.76 kristaps 2116: }
2117:
1.82 kristaps 2118: switch (r->last->tok) {
1.207 schwarze 2119: case ROFF_el:
2120: case ROFF_ie:
2121: case ROFF_if:
1.340 schwarze 2122: case ROFF_while:
1.82 kristaps 2123: break;
2124: default:
1.350 schwarze 2125: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 2126: return 0;
1.75 kristaps 2127: }
2128:
1.76 kristaps 2129: if (r->last->endspan > -1) {
1.350 schwarze 2130: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 2131: return 0;
1.76 kristaps 2132: }
2133:
1.340 schwarze 2134: return roffnode_pop(r) + roffnode_cleanscope(r);
1.76 kristaps 2135: }
2136:
1.340 schwarze 2137: static int
1.80 kristaps 2138: roff_block(ROFF_ARGS)
1.76 kristaps 2139: {
1.315 schwarze 2140: const char *name, *value;
2141: char *call, *cp, *iname, *rname;
2142: size_t csz, namesz, rsz;
2143: int deftype;
1.106 kristaps 2144:
1.220 schwarze 2145: /* Ignore groff compatibility mode for now. */
1.76 kristaps 2146:
1.238 schwarze 2147: if (tok == ROFF_de1)
1.220 schwarze 2148: tok = ROFF_de;
1.251 schwarze 2149: else if (tok == ROFF_dei1)
2150: tok = ROFF_dei;
1.238 schwarze 2151: else if (tok == ROFF_am1)
1.220 schwarze 2152: tok = ROFF_am;
1.251 schwarze 2153: else if (tok == ROFF_ami1)
2154: tok = ROFF_ami;
1.220 schwarze 2155:
2156: /* Parse the macro name argument. */
2157:
1.238 schwarze 2158: cp = buf->buf + pos;
2159: if (tok == ROFF_ig) {
1.220 schwarze 2160: iname = NULL;
2161: namesz = 0;
2162: } else {
2163: iname = cp;
2164: namesz = roff_getname(r, &cp, ln, ppos);
2165: iname[namesz] = '\0';
2166: }
1.107 kristaps 2167:
1.220 schwarze 2168: /* Resolve the macro name argument if it is indirect. */
1.107 kristaps 2169:
1.238 schwarze 2170: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 2171: deftype = ROFFDEF_USER;
2172: name = roff_getstrn(r, iname, namesz, &deftype);
2173: if (name == NULL) {
1.350 schwarze 2174: mandoc_msg(MANDOCERR_STR_UNDEF,
2175: ln, (int)(iname - buf->buf),
1.220 schwarze 2176: "%.*s", (int)namesz, iname);
2177: namesz = 0;
2178: } else
2179: namesz = strlen(name);
2180: } else
2181: name = iname;
1.107 kristaps 2182:
1.238 schwarze 2183: if (namesz == 0 && tok != ROFF_ig) {
1.350 schwarze 2184: mandoc_msg(MANDOCERR_REQ_EMPTY,
2185: ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2186: return ROFF_IGN;
1.220 schwarze 2187: }
1.80 kristaps 2188:
1.106 kristaps 2189: roffnode_push(r, tok, name, ln, ppos);
2190:
2191: /*
2192: * At the beginning of a `de' macro, clear the existing string
2193: * with the same name, if there is one. New content will be
1.193 schwarze 2194: * appended from roff_block_text() in multiline mode.
1.106 kristaps 2195: */
1.107 kristaps 2196:
1.311 schwarze 2197: if (tok == ROFF_de || tok == ROFF_dei) {
1.213 schwarze 2198: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.311 schwarze 2199: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.315 schwarze 2200: } else if (tok == ROFF_am || tok == ROFF_ami) {
2201: deftype = ROFFDEF_ANY;
2202: value = roff_getstrn(r, iname, namesz, &deftype);
2203: switch (deftype) { /* Before appending, ... */
2204: case ROFFDEF_PRE: /* copy predefined to user-defined. */
2205: roff_setstrn(&r->strtab, name, namesz,
2206: value, strlen(value), 0);
2207: break;
2208: case ROFFDEF_REN: /* call original standard macro. */
2209: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2210: (int)strlen(value), value);
2211: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2212: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
2213: free(call);
2214: break;
2215: case ROFFDEF_STD: /* rename and call standard macro. */
2216: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
2217: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
2218: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2219: (int)rsz, rname);
2220: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2221: free(call);
2222: free(rname);
2223: break;
2224: default:
2225: break;
2226: }
1.311 schwarze 2227: }
1.76 kristaps 2228:
1.238 schwarze 2229: if (*cp == '\0')
1.277 schwarze 2230: return ROFF_IGN;
1.78 kristaps 2231:
1.220 schwarze 2232: /* Get the custom end marker. */
1.107 kristaps 2233:
1.220 schwarze 2234: iname = cp;
1.213 schwarze 2235: namesz = roff_getname(r, &cp, ln, ppos);
1.220 schwarze 2236:
2237: /* Resolve the end marker if it is indirect. */
2238:
1.238 schwarze 2239: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 2240: deftype = ROFFDEF_USER;
2241: name = roff_getstrn(r, iname, namesz, &deftype);
2242: if (name == NULL) {
1.350 schwarze 2243: mandoc_msg(MANDOCERR_STR_UNDEF,
2244: ln, (int)(iname - buf->buf),
1.220 schwarze 2245: "%.*s", (int)namesz, iname);
2246: namesz = 0;
2247: } else
2248: namesz = strlen(name);
2249: } else
2250: name = iname;
2251:
1.213 schwarze 2252: if (namesz)
2253: r->last->end = mandoc_strndup(name, namesz);
1.78 kristaps 2254:
1.238 schwarze 2255: if (*cp != '\0')
1.350 schwarze 2256: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.295 schwarze 2257: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.74 kristaps 2258:
1.277 schwarze 2259: return ROFF_IGN;
1.78 kristaps 2260: }
2261:
1.340 schwarze 2262: static int
1.80 kristaps 2263: roff_block_sub(ROFF_ARGS)
1.79 kristaps 2264: {
1.294 schwarze 2265: enum roff_tok t;
1.79 kristaps 2266: int i, j;
2267:
2268: /*
2269: * First check whether a custom macro exists at this level. If
2270: * it does, then check against it. This is some of groff's
2271: * stranger behaviours. If we encountered a custom end-scope
2272: * tag and that tag also happens to be a "real" macro, then we
2273: * need to try interpreting it again as a real macro. If it's
2274: * not, then return ignore. Else continue.
2275: */
2276:
2277: if (r->last->end) {
1.130 kristaps 2278: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.238 schwarze 2279: if (buf->buf[i] != r->last->end[j])
1.79 kristaps 2280: break;
2281:
1.238 schwarze 2282: if (r->last->end[j] == '\0' &&
2283: (buf->buf[i] == '\0' ||
2284: buf->buf[i] == ' ' ||
2285: buf->buf[i] == '\t')) {
1.79 kristaps 2286: roffnode_pop(r);
2287: roffnode_cleanscope(r);
2288:
1.238 schwarze 2289: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.130 kristaps 2290: i++;
2291:
2292: pos = i;
1.238 schwarze 2293: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.294 schwarze 2294: TOKEN_NONE)
1.277 schwarze 2295: return ROFF_RERUN;
2296: return ROFF_IGN;
1.79 kristaps 2297: }
2298: }
2299:
2300: /*
2301: * If we have no custom end-query or lookup failed, then try
2302: * pulling it out of the hashtable.
2303: */
2304:
1.238 schwarze 2305: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.79 kristaps 2306:
1.238 schwarze 2307: if (t != ROFF_cblock) {
2308: if (tok != ROFF_ig)
2309: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.277 schwarze 2310: return ROFF_IGN;
1.106 kristaps 2311: }
1.79 kristaps 2312:
1.277 schwarze 2313: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 2314: }
2315:
1.340 schwarze 2316: static int
1.80 kristaps 2317: roff_block_text(ROFF_ARGS)
1.78 kristaps 2318: {
2319:
1.238 schwarze 2320: if (tok != ROFF_ig)
2321: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.106 kristaps 2322:
1.277 schwarze 2323: return ROFF_IGN;
1.78 kristaps 2324: }
2325:
1.375 ! schwarze 2326: /*
! 2327: * Check for a closing "\}" and handle it.
! 2328: * In this function, the final "int *offs" argument is used for
! 2329: * different purposes than elsewhere:
! 2330: * Input: *offs == 0: caller wants to discard arguments following \}
! 2331: * *offs == 1: caller wants to preserve text following \}
! 2332: * Output: *offs = 0: tell caller to discard input line
! 2333: * *offs = 1: tell caller to use input line
! 2334: */
1.340 schwarze 2335: static int
1.375 ! schwarze 2336: roff_cond_checkend(ROFF_ARGS)
1.82 kristaps 2337: {
1.340 schwarze 2338: char *ep;
2339: int endloop, irc, rr;
1.82 kristaps 2340:
1.340 schwarze 2341: irc = ROFF_IGN;
1.82 kristaps 2342: rr = r->last->rule;
1.340 schwarze 2343: endloop = tok != ROFF_while ? ROFF_IGN :
2344: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2345: if (roffnode_cleanscope(r))
2346: irc |= endloop;
1.144 kristaps 2347:
1.196 schwarze 2348: /*
1.375 ! schwarze 2349: * If "\}" occurs on a macro line without a preceding macro or
! 2350: * a text line contains nothing else, drop the line completely.
1.196 schwarze 2351: */
2352:
1.238 schwarze 2353: ep = buf->buf + pos;
1.375 ! schwarze 2354: if (ep[0] == '\\' && ep[1] == '}' && (ep[2] == '\0' || *offs == 0))
1.198 schwarze 2355: rr = 0;
1.196 schwarze 2356:
1.343 schwarze 2357: /*
1.375 ! schwarze 2358: * The closing delimiter "\}" rewinds the conditional scope
1.343 schwarze 2359: * but is otherwise ignored when interpreting the line.
2360: */
1.144 kristaps 2361:
1.238 schwarze 2362: while ((ep = strchr(ep, '\\')) != NULL) {
1.318 schwarze 2363: switch (ep[1]) {
2364: case '}':
1.375 ! schwarze 2365: if (rr)
! 2366: ep[1] = '&';
! 2367: else
! 2368: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1.340 schwarze 2369: if (roff_ccond(r, ln, ep - buf->buf))
2370: irc |= endloop;
1.318 schwarze 2371: break;
2372: case '\0':
2373: ++ep;
2374: break;
2375: default:
2376: ep += 2;
2377: break;
1.197 schwarze 2378: }
1.177 schwarze 2379: }
1.375 ! schwarze 2380: *offs = rr;
! 2381: return irc;
! 2382: }
1.318 schwarze 2383:
1.375 ! schwarze 2384: /*
! 2385: * Parse and process a request or macro line in conditional scope.
! 2386: */
! 2387: static int
! 2388: roff_cond_sub(ROFF_ARGS)
! 2389: {
! 2390: struct roffnode *bl;
! 2391: int irc, rr;
! 2392: enum roff_tok t;
! 2393:
! 2394: rr = 0; /* If arguments follow "\}", skip them. */
! 2395: irc = roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
1.368 schwarze 2396: t = roff_parse(r, buf->buf, &pos, ln, ppos);
2397:
2398: /* For now, let high level macros abort .ce mode. */
2399:
2400: if (roffce_node != NULL &&
2401: (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
2402: t == ROFF_TH || t == ROFF_TS)) {
2403: r->man->last = roffce_node;
2404: r->man->next = ROFF_NEXT_SIBLING;
2405: roffce_lines = 0;
2406: roffce_node = NULL;
2407: }
2408:
1.318 schwarze 2409: /*
2410: * Fully handle known macros when they are structurally
2411: * required or when the conditional evaluated to true.
2412: */
2413:
1.364 schwarze 2414: if (t == ROFF_break) {
2415: if (irc & ROFF_LOOPMASK)
2416: irc = ROFF_IGN | ROFF_LOOPEXIT;
2417: else if (rr) {
2418: for (bl = r->last; bl != NULL; bl = bl->parent) {
2419: bl->rule = 0;
2420: if (bl->tok == ROFF_while)
2421: break;
2422: }
2423: }
2424: } else if (t != TOKEN_NONE &&
2425: (rr || roffs[t].flags & ROFFMAC_STRUCT))
2426: irc |= (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
2427: else
2428: irc |= rr ? ROFF_CONT : ROFF_IGN;
1.340 schwarze 2429: return irc;
1.82 kristaps 2430: }
2431:
1.375 ! schwarze 2432: /*
! 2433: * Parse and process a text line in conditional scope.
! 2434: */
1.340 schwarze 2435: static int
1.82 kristaps 2436: roff_cond_text(ROFF_ARGS)
1.78 kristaps 2437: {
1.375 ! schwarze 2438: int irc, rr;
1.343 schwarze 2439:
1.375 ! schwarze 2440: rr = 1; /* If arguments follow "\}", preserve them. */
! 2441: irc = roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
1.340 schwarze 2442: if (rr)
2443: irc |= ROFF_CONT;
2444: return irc;
1.74 kristaps 2445: }
2446:
1.266 schwarze 2447: /* --- handling of numeric and conditional expressions -------------------- */
2448:
1.204 schwarze 2449: /*
2450: * Parse a single signed integer number. Stop at the first non-digit.
2451: * If there is at least one digit, return success and advance the
2452: * parse point, else return failure and let the parse point unchanged.
2453: * Ignore overflows, treat them just like the C language.
2454: */
1.184 schwarze 2455: static int
1.261 schwarze 2456: roff_getnum(const char *v, int *pos, int *res, int flags)
1.184 schwarze 2457: {
1.261 schwarze 2458: int myres, scaled, n, p;
1.206 schwarze 2459:
2460: if (NULL == res)
2461: res = &myres;
1.184 schwarze 2462:
2463: p = *pos;
2464: n = v[p] == '-';
1.261 schwarze 2465: if (n || v[p] == '+')
1.184 schwarze 2466: p++;
2467:
1.261 schwarze 2468: if (flags & ROFFNUM_WHITE)
2469: while (isspace((unsigned char)v[p]))
2470: p++;
2471:
1.184 schwarze 2472: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.204 schwarze 2473: *res = 10 * *res + v[p] - '0';
1.184 schwarze 2474: if (p == *pos + n)
2475: return 0;
2476:
2477: if (n)
2478: *res = -*res;
2479:
1.254 schwarze 2480: /* Each number may be followed by one optional scaling unit. */
2481:
2482: switch (v[p]) {
2483: case 'f':
1.261 schwarze 2484: scaled = *res * 65536;
1.254 schwarze 2485: break;
2486: case 'i':
1.261 schwarze 2487: scaled = *res * 240;
1.254 schwarze 2488: break;
2489: case 'c':
1.261 schwarze 2490: scaled = *res * 240 / 2.54;
1.254 schwarze 2491: break;
2492: case 'v':
2493: case 'P':
1.261 schwarze 2494: scaled = *res * 40;
1.254 schwarze 2495: break;
2496: case 'm':
2497: case 'n':
1.261 schwarze 2498: scaled = *res * 24;
1.254 schwarze 2499: break;
2500: case 'p':
1.261 schwarze 2501: scaled = *res * 10 / 3;
1.254 schwarze 2502: break;
2503: case 'u':
1.261 schwarze 2504: scaled = *res;
1.254 schwarze 2505: break;
2506: case 'M':
1.261 schwarze 2507: scaled = *res * 6 / 25;
1.254 schwarze 2508: break;
2509: default:
1.261 schwarze 2510: scaled = *res;
1.254 schwarze 2511: p--;
2512: break;
2513: }
1.261 schwarze 2514: if (flags & ROFFNUM_SCALE)
2515: *res = scaled;
1.254 schwarze 2516:
2517: *pos = p + 1;
1.277 schwarze 2518: return 1;
1.184 schwarze 2519: }
2520:
1.198 schwarze 2521: /*
2522: * Evaluate a string comparison condition.
2523: * The first character is the delimiter.
2524: * Succeed if the string up to its second occurrence
2525: * matches the string up to its third occurence.
2526: * Advance the cursor after the third occurrence
2527: * or lacking that, to the end of the line.
2528: */
2529: static int
2530: roff_evalstrcond(const char *v, int *pos)
2531: {
2532: const char *s1, *s2, *s3;
2533: int match;
2534:
2535: match = 0;
2536: s1 = v + *pos; /* initial delimiter */
2537: s2 = s1 + 1; /* for scanning the first string */
2538: s3 = strchr(s2, *s1); /* for scanning the second string */
2539:
2540: if (NULL == s3) /* found no middle delimiter */
2541: goto out;
2542:
2543: while ('\0' != *++s3) {
2544: if (*s2 != *s3) { /* mismatch */
2545: s3 = strchr(s3, *s1);
2546: break;
2547: }
2548: if (*s3 == *s1) { /* found the final delimiter */
2549: match = 1;
2550: break;
2551: }
2552: s2++;
2553: }
2554:
2555: out:
2556: if (NULL == s3)
2557: s3 = strchr(s2, '\0');
1.242 schwarze 2558: else if (*s3 != '\0')
1.198 schwarze 2559: s3++;
2560: *pos = s3 - v;
1.277 schwarze 2561: return match;
1.198 schwarze 2562: }
2563:
1.204 schwarze 2564: /*
2565: * Evaluate an optionally negated single character, numerical,
2566: * or string condition.
2567: */
1.198 schwarze 2568: static int
1.271 schwarze 2569: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.88 kristaps 2570: {
1.336 schwarze 2571: const char *start, *end;
2572: char *cp, *name;
2573: size_t sz;
2574: int deftype, len, number, savepos, istrue, wanttrue;
1.88 kristaps 2575:
1.198 schwarze 2576: if ('!' == v[*pos]) {
2577: wanttrue = 0;
2578: (*pos)++;
2579: } else
2580: wanttrue = 1;
2581:
1.88 kristaps 2582: switch (v[*pos]) {
1.240 schwarze 2583: case '\0':
1.277 schwarze 2584: return 0;
1.207 schwarze 2585: case 'n':
2586: case 'o':
1.88 kristaps 2587: (*pos)++;
1.277 schwarze 2588: return wanttrue;
1.207 schwarze 2589: case 'e':
2590: case 't':
1.239 schwarze 2591: case 'v':
1.88 kristaps 2592: (*pos)++;
1.277 schwarze 2593: return !wanttrue;
1.336 schwarze 2594: case 'c':
2595: do {
2596: (*pos)++;
2597: } while (v[*pos] == ' ');
2598:
2599: /*
2600: * Quirk for groff compatibility:
2601: * The horizontal tab is neither available nor unavailable.
2602: */
2603:
2604: if (v[*pos] == '\t') {
2605: (*pos)++;
2606: return 0;
2607: }
2608:
2609: /* Printable ASCII characters are available. */
2610:
2611: if (v[*pos] != '\\') {
2612: (*pos)++;
2613: return wanttrue;
2614: }
2615:
2616: end = v + ++*pos;
2617: switch (mandoc_escape(&end, &start, &len)) {
2618: case ESCAPE_SPECIAL:
2619: istrue = mchars_spec2cp(start, len) != -1;
2620: break;
2621: case ESCAPE_UNICODE:
2622: istrue = 1;
2623: break;
2624: case ESCAPE_NUMBERED:
2625: istrue = mchars_num2char(start, len) != -1;
2626: break;
2627: default:
2628: istrue = !wanttrue;
2629: break;
2630: }
2631: *pos = end - v;
2632: return istrue == wanttrue;
1.310 schwarze 2633: case 'd':
1.271 schwarze 2634: case 'r':
1.310 schwarze 2635: cp = v + *pos + 1;
2636: while (*cp == ' ')
2637: cp++;
2638: name = cp;
2639: sz = roff_getname(r, &cp, ln, cp - v);
1.315 schwarze 2640: if (sz == 0)
2641: istrue = 0;
2642: else if (v[*pos] == 'r')
2643: istrue = roff_hasregn(r, name, sz);
2644: else {
2645: deftype = ROFFDEF_ANY;
2646: roff_getstrn(r, name, sz, &deftype);
2647: istrue = !!deftype;
2648: }
1.363 schwarze 2649: *pos = (name + sz) - v;
1.310 schwarze 2650: return istrue == wanttrue;
1.88 kristaps 2651: default:
2652: break;
2653: }
2654:
1.241 schwarze 2655: savepos = *pos;
1.261 schwarze 2656: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.277 schwarze 2657: return (number > 0) == wanttrue;
1.241 schwarze 2658: else if (*pos == savepos)
1.277 schwarze 2659: return roff_evalstrcond(v, pos) == wanttrue;
1.204 schwarze 2660: else
1.277 schwarze 2661: return 0;
1.88 kristaps 2662: }
2663:
1.340 schwarze 2664: static int
1.103 kristaps 2665: roff_line_ignore(ROFF_ARGS)
1.89 kristaps 2666: {
1.123 schwarze 2667:
1.277 schwarze 2668: return ROFF_IGN;
1.89 kristaps 2669: }
2670:
1.340 schwarze 2671: static int
1.251 schwarze 2672: roff_insec(ROFF_ARGS)
2673: {
2674:
1.350 schwarze 2675: mandoc_msg(MANDOCERR_REQ_INSEC, ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2676: return ROFF_IGN;
1.251 schwarze 2677: }
2678:
1.340 schwarze 2679: static int
1.251 schwarze 2680: roff_unsupp(ROFF_ARGS)
2681: {
2682:
1.350 schwarze 2683: mandoc_msg(MANDOCERR_REQ_UNSUPP, ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2684: return ROFF_IGN;
1.251 schwarze 2685: }
2686:
1.340 schwarze 2687: static int
1.82 kristaps 2688: roff_cond(ROFF_ARGS)
1.74 kristaps 2689: {
1.340 schwarze 2690: int irc;
1.173 schwarze 2691:
2692: roffnode_push(r, tok, NULL, ln, ppos);
1.74 kristaps 2693:
1.207 schwarze 2694: /*
1.134 kristaps 2695: * An `.el' has no conditional body: it will consume the value
2696: * of the current rstack entry set in prior `ie' calls or
1.207 schwarze 2697: * defaults to DENY.
1.134 kristaps 2698: *
2699: * If we're not an `el', however, then evaluate the conditional.
2700: */
1.133 kristaps 2701:
1.238 schwarze 2702: r->last->rule = tok == ROFF_el ?
1.207 schwarze 2703: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.238 schwarze 2704: roff_evalcond(r, ln, buf->buf, &pos);
1.77 kristaps 2705:
1.134 kristaps 2706: /*
2707: * An if-else will put the NEGATION of the current evaluated
2708: * conditional into the stack of rules.
2709: */
2710:
1.238 schwarze 2711: if (tok == ROFF_ie) {
1.223 schwarze 2712: if (r->rstackpos + 1 == r->rstacksz) {
2713: r->rstacksz += 16;
2714: r->rstack = mandoc_reallocarray(r->rstack,
2715: r->rstacksz, sizeof(int));
1.134 kristaps 2716: }
1.198 schwarze 2717: r->rstack[++r->rstackpos] = !r->last->rule;
1.82 kristaps 2718: }
1.88 kristaps 2719:
2720: /* If the parent has false as its rule, then so do we. */
2721:
1.198 schwarze 2722: if (r->last->parent && !r->last->parent->rule)
2723: r->last->rule = 0;
1.88 kristaps 2724:
2725: /*
1.173 schwarze 2726: * Determine scope.
2727: * If there is nothing on the line after the conditional,
2728: * not even whitespace, use next-line scope.
1.340 schwarze 2729: * Except that .while does not support next-line scope.
1.88 kristaps 2730: */
1.74 kristaps 2731:
1.340 schwarze 2732: if (buf->buf[pos] == '\0' && tok != ROFF_while) {
1.173 schwarze 2733: r->last->endspan = 2;
2734: goto out;
2735: }
2736:
1.238 schwarze 2737: while (buf->buf[pos] == ' ')
1.173 schwarze 2738: pos++;
2739:
2740: /* An opening brace requests multiline scope. */
1.75 kristaps 2741:
1.238 schwarze 2742: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.75 kristaps 2743: r->last->endspan = -1;
2744: pos += 2;
1.272 schwarze 2745: while (buf->buf[pos] == ' ')
2746: pos++;
1.173 schwarze 2747: goto out;
1.207 schwarze 2748: }
1.74 kristaps 2749:
1.77 kristaps 2750: /*
1.173 schwarze 2751: * Anything else following the conditional causes
2752: * single-line scope. Warn if the scope contains
2753: * nothing but trailing whitespace.
1.77 kristaps 2754: */
2755:
1.238 schwarze 2756: if (buf->buf[pos] == '\0')
1.350 schwarze 2757: mandoc_msg(MANDOCERR_COND_EMPTY,
2758: ln, ppos, "%s", roff_name[tok]);
1.77 kristaps 2759:
1.173 schwarze 2760: r->last->endspan = 1;
1.74 kristaps 2761:
1.173 schwarze 2762: out:
1.75 kristaps 2763: *offs = pos;
1.340 schwarze 2764: irc = ROFF_RERUN;
2765: if (tok == ROFF_while)
2766: irc |= ROFF_WHILE;
2767: return irc;
1.83 schwarze 2768: }
2769:
1.340 schwarze 2770: static int
1.92 schwarze 2771: roff_ds(ROFF_ARGS)
2772: {
1.212 schwarze 2773: char *string;
2774: const char *name;
2775: size_t namesz;
1.96 kristaps 2776:
1.251 schwarze 2777: /* Ignore groff compatibility mode for now. */
2778:
2779: if (tok == ROFF_ds1)
2780: tok = ROFF_ds;
2781: else if (tok == ROFF_as1)
2782: tok = ROFF_as;
2783:
1.96 kristaps 2784: /*
1.212 schwarze 2785: * The first word is the name of the string.
2786: * If it is empty or terminated by an escape sequence,
2787: * abort the `ds' request without defining anything.
1.96 kristaps 2788: */
1.92 schwarze 2789:
1.238 schwarze 2790: name = string = buf->buf + pos;
2791: if (*name == '\0')
1.277 schwarze 2792: return ROFF_IGN;
1.92 schwarze 2793:
1.212 schwarze 2794: namesz = roff_getname(r, &string, ln, pos);
1.363 schwarze 2795: switch (name[namesz]) {
2796: case '\\':
1.277 schwarze 2797: return ROFF_IGN;
1.363 schwarze 2798: case '\t':
2799: string = buf->buf + pos + namesz;
2800: break;
2801: default:
2802: break;
2803: }
1.212 schwarze 2804:
2805: /* Read past the initial double-quote, if any. */
1.238 schwarze 2806: if (*string == '"')
1.92 schwarze 2807: string++;
2808:
1.96 kristaps 2809: /* The rest is the value. */
1.212 schwarze 2810: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2811: ROFF_as == tok);
1.311 schwarze 2812: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.277 schwarze 2813: return ROFF_IGN;
1.92 schwarze 2814: }
2815:
1.204 schwarze 2816: /*
2817: * Parse a single operator, one or two characters long.
2818: * If the operator is recognized, return success and advance the
2819: * parse point, else return failure and let the parse point unchanged.
2820: */
2821: static int
2822: roff_getop(const char *v, int *pos, char *res)
2823: {
2824:
2825: *res = v[*pos];
2826:
2827: switch (*res) {
1.207 schwarze 2828: case '+':
2829: case '-':
2830: case '*':
2831: case '/':
2832: case '%':
2833: case '&':
2834: case ':':
1.204 schwarze 2835: break;
2836: case '<':
2837: switch (v[*pos + 1]) {
1.207 schwarze 2838: case '=':
1.204 schwarze 2839: *res = 'l';
2840: (*pos)++;
2841: break;
1.207 schwarze 2842: case '>':
1.204 schwarze 2843: *res = '!';
2844: (*pos)++;
2845: break;
1.207 schwarze 2846: case '?':
1.204 schwarze 2847: *res = 'i';
2848: (*pos)++;
2849: break;
2850: default:
2851: break;
2852: }
2853: break;
2854: case '>':
2855: switch (v[*pos + 1]) {
1.207 schwarze 2856: case '=':
1.204 schwarze 2857: *res = 'g';
2858: (*pos)++;
2859: break;
1.207 schwarze 2860: case '?':
1.204 schwarze 2861: *res = 'a';
2862: (*pos)++;
2863: break;
2864: default:
2865: break;
2866: }
2867: break;
2868: case '=':
2869: if ('=' == v[*pos + 1])
2870: (*pos)++;
2871: break;
2872: default:
1.277 schwarze 2873: return 0;
1.204 schwarze 2874: }
2875: (*pos)++;
2876:
1.277 schwarze 2877: return *res;
1.204 schwarze 2878: }
2879:
2880: /*
2881: * Evaluate either a parenthesized numeric expression
2882: * or a single signed integer number.
2883: */
2884: static int
1.235 schwarze 2885: roff_evalpar(struct roff *r, int ln,
1.261 schwarze 2886: const char *v, int *pos, int *res, int flags)
1.204 schwarze 2887: {
2888:
2889: if ('(' != v[*pos])
1.277 schwarze 2890: return roff_getnum(v, pos, res, flags);
1.204 schwarze 2891:
2892: (*pos)++;
1.261 schwarze 2893: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.277 schwarze 2894: return 0;
1.204 schwarze 2895:
1.206 schwarze 2896: /*
2897: * Omission of the closing parenthesis
2898: * is an error in validation mode,
2899: * but ignored in evaluation mode.
2900: */
2901:
1.204 schwarze 2902: if (')' == v[*pos])
2903: (*pos)++;
1.206 schwarze 2904: else if (NULL == res)
1.277 schwarze 2905: return 0;
1.204 schwarze 2906:
1.277 schwarze 2907: return 1;
1.204 schwarze 2908: }
2909:
2910: /*
2911: * Evaluate a complete numeric expression.
2912: * Proceed left to right, there is no concept of precedence.
2913: */
2914: static int
1.235 schwarze 2915: roff_evalnum(struct roff *r, int ln, const char *v,
1.261 schwarze 2916: int *pos, int *res, int flags)
1.204 schwarze 2917: {
2918: int mypos, operand2;
2919: char operator;
2920:
2921: if (NULL == pos) {
2922: mypos = 0;
2923: pos = &mypos;
2924: }
2925:
1.261 schwarze 2926: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2927: while (isspace((unsigned char)v[*pos]))
2928: (*pos)++;
2929:
1.261 schwarze 2930: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.277 schwarze 2931: return 0;
1.204 schwarze 2932:
2933: while (1) {
1.261 schwarze 2934: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2935: while (isspace((unsigned char)v[*pos]))
2936: (*pos)++;
2937:
2938: if ( ! roff_getop(v, pos, &operator))
2939: break;
2940:
1.261 schwarze 2941: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2942: while (isspace((unsigned char)v[*pos]))
2943: (*pos)++;
2944:
1.261 schwarze 2945: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.277 schwarze 2946: return 0;
1.204 schwarze 2947:
1.261 schwarze 2948: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2949: while (isspace((unsigned char)v[*pos]))
2950: (*pos)++;
1.206 schwarze 2951:
2952: if (NULL == res)
2953: continue;
1.204 schwarze 2954:
2955: switch (operator) {
1.207 schwarze 2956: case '+':
1.204 schwarze 2957: *res += operand2;
2958: break;
1.207 schwarze 2959: case '-':
1.204 schwarze 2960: *res -= operand2;
2961: break;
1.207 schwarze 2962: case '*':
1.204 schwarze 2963: *res *= operand2;
2964: break;
1.207 schwarze 2965: case '/':
1.244 schwarze 2966: if (operand2 == 0) {
1.235 schwarze 2967: mandoc_msg(MANDOCERR_DIVZERO,
1.350 schwarze 2968: ln, *pos, "%s", v);
1.234 kristaps 2969: *res = 0;
2970: break;
2971: }
1.204 schwarze 2972: *res /= operand2;
2973: break;
1.207 schwarze 2974: case '%':
1.244 schwarze 2975: if (operand2 == 0) {
2976: mandoc_msg(MANDOCERR_DIVZERO,
1.350 schwarze 2977: ln, *pos, "%s", v);
1.244 schwarze 2978: *res = 0;
2979: break;
2980: }
1.204 schwarze 2981: *res %= operand2;
2982: break;
1.207 schwarze 2983: case '<':
1.204 schwarze 2984: *res = *res < operand2;
2985: break;
1.207 schwarze 2986: case '>':
1.204 schwarze 2987: *res = *res > operand2;
2988: break;
1.207 schwarze 2989: case 'l':
1.204 schwarze 2990: *res = *res <= operand2;
2991: break;
1.207 schwarze 2992: case 'g':
1.204 schwarze 2993: *res = *res >= operand2;
2994: break;
1.207 schwarze 2995: case '=':
1.204 schwarze 2996: *res = *res == operand2;
2997: break;
1.207 schwarze 2998: case '!':
1.204 schwarze 2999: *res = *res != operand2;
3000: break;
1.207 schwarze 3001: case '&':
1.204 schwarze 3002: *res = *res && operand2;
3003: break;
1.207 schwarze 3004: case ':':
1.204 schwarze 3005: *res = *res || operand2;
3006: break;
1.207 schwarze 3007: case 'i':
1.204 schwarze 3008: if (operand2 < *res)
3009: *res = operand2;
3010: break;
1.207 schwarze 3011: case 'a':
1.204 schwarze 3012: if (operand2 > *res)
3013: *res = operand2;
3014: break;
3015: default:
3016: abort();
3017: }
3018: }
1.277 schwarze 3019: return 1;
1.204 schwarze 3020: }
3021:
1.266 schwarze 3022: /* --- register management ------------------------------------------------ */
3023:
1.180 schwarze 3024: void
1.187 schwarze 3025: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.147 kristaps 3026: {
1.327 schwarze 3027: roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
1.326 schwarze 3028: }
3029:
3030: static void
3031: roff_setregn(struct roff *r, const char *name, size_t len,
1.327 schwarze 3032: int val, char sign, int step)
1.326 schwarze 3033: {
1.180 schwarze 3034: struct roffreg *reg;
3035:
3036: /* Search for an existing register with the same name. */
3037: reg = r->regtab;
3038:
1.326 schwarze 3039: while (reg != NULL && (reg->key.sz != len ||
3040: strncmp(reg->key.p, name, len) != 0))
1.180 schwarze 3041: reg = reg->next;
1.147 kristaps 3042:
1.180 schwarze 3043: if (NULL == reg) {
3044: /* Create a new register. */
3045: reg = mandoc_malloc(sizeof(struct roffreg));
1.326 schwarze 3046: reg->key.p = mandoc_strndup(name, len);
3047: reg->key.sz = len;
1.187 schwarze 3048: reg->val = 0;
1.327 schwarze 3049: reg->step = 0;
1.180 schwarze 3050: reg->next = r->regtab;
3051: r->regtab = reg;
3052: }
3053:
1.187 schwarze 3054: if ('+' == sign)
3055: reg->val += val;
3056: else if ('-' == sign)
3057: reg->val -= val;
3058: else
3059: reg->val = val;
1.327 schwarze 3060: if (step != INT_MIN)
3061: reg->step = step;
1.147 kristaps 3062: }
3063:
1.192 schwarze 3064: /*
3065: * Handle some predefined read-only number registers.
3066: * For now, return -1 if the requested register is not predefined;
3067: * in case a predefined read-only register having the value -1
3068: * were to turn up, another special value would have to be chosen.
3069: */
3070: static int
1.273 schwarze 3071: roff_getregro(const struct roff *r, const char *name)
1.192 schwarze 3072: {
3073:
3074: switch (*name) {
1.273 schwarze 3075: case '$': /* Number of arguments of the last macro evaluated. */
1.339 schwarze 3076: return r->mstackpos < 0 ? 0 : r->mstack[r->mstackpos].argc;
1.207 schwarze 3077: case 'A': /* ASCII approximation mode is always off. */
1.277 schwarze 3078: return 0;
1.207 schwarze 3079: case 'g': /* Groff compatibility mode is always on. */
1.277 schwarze 3080: return 1;
1.207 schwarze 3081: case 'H': /* Fixed horizontal resolution. */
1.277 schwarze 3082: return 24;
1.207 schwarze 3083: case 'j': /* Always adjust left margin only. */
1.277 schwarze 3084: return 0;
1.207 schwarze 3085: case 'T': /* Some output device is always defined. */
1.277 schwarze 3086: return 1;
1.207 schwarze 3087: case 'V': /* Fixed vertical resolution. */
1.277 schwarze 3088: return 40;
1.192 schwarze 3089: default:
1.277 schwarze 3090: return -1;
1.192 schwarze 3091: }
3092: }
3093:
1.181 schwarze 3094: int
1.326 schwarze 3095: roff_getreg(struct roff *r, const char *name)
1.147 kristaps 3096: {
1.327 schwarze 3097: return roff_getregn(r, name, strlen(name), '\0');
1.181 schwarze 3098: }
3099:
3100: static int
1.327 schwarze 3101: roff_getregn(struct roff *r, const char *name, size_t len, char sign)
1.181 schwarze 3102: {
3103: struct roffreg *reg;
1.192 schwarze 3104: int val;
3105:
3106: if ('.' == name[0] && 2 == len) {
1.273 schwarze 3107: val = roff_getregro(r, name + 1);
1.192 schwarze 3108: if (-1 != val)
1.277 schwarze 3109: return val;
1.192 schwarze 3110: }
1.181 schwarze 3111:
1.327 schwarze 3112: for (reg = r->regtab; reg; reg = reg->next) {
1.181 schwarze 3113: if (len == reg->key.sz &&
1.327 schwarze 3114: 0 == strncmp(name, reg->key.p, len)) {
3115: switch (sign) {
3116: case '+':
3117: reg->val += reg->step;
3118: break;
3119: case '-':
3120: reg->val -= reg->step;
3121: break;
3122: default:
3123: break;
3124: }
1.277 schwarze 3125: return reg->val;
1.327 schwarze 3126: }
3127: }
1.271 schwarze 3128:
1.327 schwarze 3129: roff_setregn(r, name, len, 0, '\0', INT_MIN);
1.277 schwarze 3130: return 0;
1.271 schwarze 3131: }
3132:
3133: static int
3134: roff_hasregn(const struct roff *r, const char *name, size_t len)
3135: {
3136: struct roffreg *reg;
3137: int val;
3138:
3139: if ('.' == name[0] && 2 == len) {
1.273 schwarze 3140: val = roff_getregro(r, name + 1);
1.271 schwarze 3141: if (-1 != val)
1.277 schwarze 3142: return 1;
1.271 schwarze 3143: }
3144:
3145: for (reg = r->regtab; reg; reg = reg->next)
3146: if (len == reg->key.sz &&
3147: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 3148: return 1;
1.147 kristaps 3149:
1.277 schwarze 3150: return 0;
1.147 kristaps 3151: }
3152:
1.180 schwarze 3153: static void
3154: roff_freereg(struct roffreg *reg)
1.147 kristaps 3155: {
1.180 schwarze 3156: struct roffreg *old_reg;
1.147 kristaps 3157:
1.180 schwarze 3158: while (NULL != reg) {
3159: free(reg->key.p);
3160: old_reg = reg;
3161: reg = reg->next;
3162: free(old_reg);
3163: }
1.147 kristaps 3164: }
1.92 schwarze 3165:
1.340 schwarze 3166: static int
1.89 kristaps 3167: roff_nr(ROFF_ARGS)
1.83 schwarze 3168: {
1.327 schwarze 3169: char *key, *val, *step;
1.212 schwarze 3170: size_t keysz;
1.327 schwarze 3171: int iv, is, len;
1.187 schwarze 3172: char sign;
1.89 kristaps 3173:
1.238 schwarze 3174: key = val = buf->buf + pos;
3175: if (*key == '\0')
1.277 schwarze 3176: return ROFF_IGN;
1.212 schwarze 3177:
3178: keysz = roff_getname(r, &val, ln, pos);
1.363 schwarze 3179: if (key[keysz] == '\\' || key[keysz] == '\t')
1.277 schwarze 3180: return ROFF_IGN;
1.89 kristaps 3181:
1.187 schwarze 3182: sign = *val;
1.238 schwarze 3183: if (sign == '+' || sign == '-')
1.187 schwarze 3184: val++;
3185:
1.327 schwarze 3186: len = 0;
3187: if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
3188: return ROFF_IGN;
3189:
3190: step = val + len;
3191: while (isspace((unsigned char)*step))
3192: step++;
3193: if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)
3194: is = INT_MIN;
1.109 kristaps 3195:
1.327 schwarze 3196: roff_setregn(r, key, keysz, iv, sign, is);
1.277 schwarze 3197: return ROFF_IGN;
1.203 schwarze 3198: }
3199:
1.340 schwarze 3200: static int
1.203 schwarze 3201: roff_rr(ROFF_ARGS)
3202: {
3203: struct roffreg *reg, **prev;
1.212 schwarze 3204: char *name, *cp;
3205: size_t namesz;
1.203 schwarze 3206:
1.238 schwarze 3207: name = cp = buf->buf + pos;
3208: if (*name == '\0')
1.277 schwarze 3209: return ROFF_IGN;
1.212 schwarze 3210: namesz = roff_getname(r, &cp, ln, pos);
3211: name[namesz] = '\0';
1.203 schwarze 3212:
3213: prev = &r->regtab;
3214: while (1) {
3215: reg = *prev;
1.238 schwarze 3216: if (reg == NULL || !strcmp(name, reg->key.p))
1.203 schwarze 3217: break;
3218: prev = ®->next;
3219: }
1.238 schwarze 3220: if (reg != NULL) {
1.203 schwarze 3221: *prev = reg->next;
3222: free(reg->key.p);
3223: free(reg);
3224: }
1.277 schwarze 3225: return ROFF_IGN;
1.122 schwarze 3226: }
3227:
1.266 schwarze 3228: /* --- handler functions for roff requests -------------------------------- */
3229:
1.340 schwarze 3230: static int
1.122 schwarze 3231: roff_rm(ROFF_ARGS)
3232: {
3233: const char *name;
3234: char *cp;
1.212 schwarze 3235: size_t namesz;
1.122 schwarze 3236:
1.238 schwarze 3237: cp = buf->buf + pos;
3238: while (*cp != '\0') {
1.212 schwarze 3239: name = cp;
1.238 schwarze 3240: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.212 schwarze 3241: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.311 schwarze 3242: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.363 schwarze 3243: if (name[namesz] == '\\' || name[namesz] == '\t')
1.212 schwarze 3244: break;
1.122 schwarze 3245: }
1.277 schwarze 3246: return ROFF_IGN;
1.178 schwarze 3247: }
3248:
1.340 schwarze 3249: static int
1.178 schwarze 3250: roff_it(ROFF_ARGS)
3251: {
3252: int iv;
3253:
3254: /* Parse the number of lines. */
1.261 schwarze 3255:
3256: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.350 schwarze 3257: mandoc_msg(MANDOCERR_IT_NONUM,
3258: ln, ppos, "%s", buf->buf + 1);
1.277 schwarze 3259: return ROFF_IGN;
1.178 schwarze 3260: }
3261:
1.262 schwarze 3262: while (isspace((unsigned char)buf->buf[pos]))
3263: pos++;
3264:
3265: /*
3266: * Arm the input line trap.
3267: * Special-casing "an-trap" is an ugly workaround to cope
3268: * with DocBook stupidly fiddling with man(7) internals.
3269: */
1.261 schwarze 3270:
1.178 schwarze 3271: roffit_lines = iv;
1.262 schwarze 3272: roffit_macro = mandoc_strdup(iv != 1 ||
3273: strcmp(buf->buf + pos, "an-trap") ?
3274: buf->buf + pos : "br");
1.277 schwarze 3275: return ROFF_IGN;
1.175 schwarze 3276: }
3277:
1.340 schwarze 3278: static int
1.175 schwarze 3279: roff_Dd(ROFF_ARGS)
3280: {
1.315 schwarze 3281: int mask;
3282: enum roff_tok t, te;
1.227 schwarze 3283:
1.315 schwarze 3284: switch (tok) {
3285: case ROFF_Dd:
3286: tok = MDOC_Dd;
3287: te = MDOC_MAX;
3288: if (r->format == 0)
3289: r->format = MPARSE_MDOC;
3290: mask = MPARSE_MDOC | MPARSE_QUICK;
3291: break;
3292: case ROFF_TH:
3293: tok = MAN_TH;
3294: te = MAN_MAX;
3295: if (r->format == 0)
3296: r->format = MPARSE_MAN;
3297: mask = MPARSE_QUICK;
3298: break;
3299: default:
3300: abort();
3301: }
3302: if ((r->options & mask) == 0)
3303: for (t = tok; t < te; t++)
3304: roff_setstr(r, roff_name[t], NULL, 0);
1.277 schwarze 3305: return ROFF_CONT;
1.109 kristaps 3306: }
3307:
1.340 schwarze 3308: static int
1.109 kristaps 3309: roff_TE(ROFF_ARGS)
3310: {
1.361 schwarze 3311: r->man->flags &= ~ROFF_NONOFILL;
1.321 schwarze 3312: if (r->tbl == NULL) {
1.350 schwarze 3313: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "TE");
1.321 schwarze 3314: return ROFF_IGN;
3315: }
1.346 schwarze 3316: if (tbl_end(r->tbl, 0) == 0) {
1.321 schwarze 3317: r->tbl = NULL;
1.258 schwarze 3318: free(buf->buf);
3319: buf->buf = mandoc_strdup(".sp");
3320: buf->sz = 4;
1.329 schwarze 3321: *offs = 0;
1.277 schwarze 3322: return ROFF_REPARSE;
1.258 schwarze 3323: }
1.321 schwarze 3324: r->tbl = NULL;
1.277 schwarze 3325: return ROFF_IGN;
1.112 kristaps 3326: }
3327:
1.340 schwarze 3328: static int
1.112 kristaps 3329: roff_T_(ROFF_ARGS)
3330: {
3331:
3332: if (NULL == r->tbl)
1.350 schwarze 3333: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "T&");
1.112 kristaps 3334: else
1.296 schwarze 3335: tbl_restart(ln, ppos, r->tbl);
1.112 kristaps 3336:
1.277 schwarze 3337: return ROFF_IGN;
1.109 kristaps 3338: }
3339:
1.230 schwarze 3340: /*
3341: * Handle in-line equation delimiters.
3342: */
1.340 schwarze 3343: static int
1.238 schwarze 3344: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.151 kristaps 3345: {
1.233 schwarze 3346: char *cp1, *cp2;
3347: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.151 kristaps 3348:
1.230 schwarze 3349: /*
3350: * Outside equations, look for an opening delimiter.
3351: * If we are inside an equation, we already know it is
3352: * in-line, or this function wouldn't have been called;
3353: * so look for a closing delimiter.
3354: */
3355:
1.238 schwarze 3356: cp1 = buf->buf + pos;
1.230 schwarze 3357: cp2 = strchr(cp1, r->eqn == NULL ?
3358: r->last_eqn->odelim : r->last_eqn->cdelim);
3359: if (cp2 == NULL)
1.277 schwarze 3360: return ROFF_CONT;
1.230 schwarze 3361:
1.233 schwarze 3362: *cp2++ = '\0';
3363: bef_pr = bef_nl = aft_nl = aft_pr = "";
3364:
3365: /* Handle preceding text, protecting whitespace. */
3366:
1.238 schwarze 3367: if (*buf->buf != '\0') {
1.233 schwarze 3368: if (r->eqn == NULL)
3369: bef_pr = "\\&";
3370: bef_nl = "\n";
3371: }
3372:
3373: /*
3374: * Prepare replacing the delimiter with an equation macro
3375: * and drop leading white space from the equation.
3376: */
1.230 schwarze 3377:
1.233 schwarze 3378: if (r->eqn == NULL) {
3379: while (*cp2 == ' ')
3380: cp2++;
3381: mac = ".EQ";
3382: } else
3383: mac = ".EN";
3384:
3385: /* Handle following text, protecting whitespace. */
3386:
3387: if (*cp2 != '\0') {
3388: aft_nl = "\n";
3389: if (r->eqn != NULL)
3390: aft_pr = "\\&";
3391: }
3392:
3393: /* Do the actual replacement. */
3394:
1.238 schwarze 3395: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.233 schwarze 3396: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.238 schwarze 3397: free(buf->buf);
3398: buf->buf = cp1;
1.230 schwarze 3399:
3400: /* Toggle the in-line state of the eqn subsystem. */
3401:
3402: r->eqn_inline = r->eqn == NULL;
1.277 schwarze 3403: return ROFF_REPARSE;
1.151 kristaps 3404: }
3405:
1.340 schwarze 3406: static int
1.235 schwarze 3407: roff_EQ(ROFF_ARGS)
1.125 kristaps 3408: {
1.319 schwarze 3409: struct roff_node *n;
3410:
1.356 schwarze 3411: if (r->man->meta.macroset == MACROSET_MAN)
1.322 schwarze 3412: man_breakscope(r->man, ROFF_EQ);
1.319 schwarze 3413: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
3414: if (ln > r->man->last->line)
3415: n->flags |= NODE_LINE;
1.348 schwarze 3416: n->eqn = eqn_box_new();
1.319 schwarze 3417: roff_node_append(r->man, n);
3418: r->man->next = ROFF_NEXT_SIBLING;
1.125 kristaps 3419:
1.238 schwarze 3420: assert(r->eqn == NULL);
1.319 schwarze 3421: if (r->last_eqn == NULL)
1.351 schwarze 3422: r->last_eqn = eqn_alloc();
1.319 schwarze 3423: else
3424: eqn_reset(r->last_eqn);
3425: r->eqn = r->last_eqn;
3426: r->eqn->node = n;
1.151 kristaps 3427:
1.238 schwarze 3428: if (buf->buf[pos] != '\0')
1.350 schwarze 3429: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.238 schwarze 3430: ".EQ %s", buf->buf + pos);
1.151 kristaps 3431:
1.277 schwarze 3432: return ROFF_IGN;
1.125 kristaps 3433: }
3434:
1.340 schwarze 3435: static int
1.125 kristaps 3436: roff_EN(ROFF_ARGS)
3437: {
1.319 schwarze 3438: if (r->eqn != NULL) {
3439: eqn_parse(r->eqn);
3440: r->eqn = NULL;
3441: } else
1.350 schwarze 3442: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "EN");
1.319 schwarze 3443: if (buf->buf[pos] != '\0')
1.350 schwarze 3444: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.319 schwarze 3445: "EN %s", buf->buf + pos);
1.277 schwarze 3446: return ROFF_IGN;
1.125 kristaps 3447: }
3448:
1.340 schwarze 3449: static int
1.109 kristaps 3450: roff_TS(ROFF_ARGS)
3451: {
1.321 schwarze 3452: if (r->tbl != NULL) {
1.350 schwarze 3453: mandoc_msg(MANDOCERR_BLK_BROKEN, ln, ppos, "TS breaks TS");
1.346 schwarze 3454: tbl_end(r->tbl, 0);
1.115 kristaps 3455: }
1.361 schwarze 3456: r->man->flags |= ROFF_NONOFILL;
1.351 schwarze 3457: r->tbl = tbl_alloc(ppos, ln, r->last_tbl);
1.346 schwarze 3458: if (r->last_tbl == NULL)
1.321 schwarze 3459: r->first_tbl = r->tbl;
3460: r->last_tbl = r->tbl;
1.297 schwarze 3461: return ROFF_IGN;
3462: }
3463:
1.340 schwarze 3464: static int
1.358 schwarze 3465: roff_noarg(ROFF_ARGS)
3466: {
3467: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3468: man_breakscope(r->man, tok);
3469: if (tok == ROFF_brp)
3470: tok = ROFF_br;
3471: roff_elem_alloc(r->man, ln, ppos, tok);
3472: if (buf->buf[pos] != '\0')
3473: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
3474: "%s %s", roff_name[tok], buf->buf + pos);
3475: if (tok == ROFF_nf)
3476: r->man->flags |= ROFF_NOFILL;
3477: else if (tok == ROFF_fi)
3478: r->man->flags &= ~ROFF_NOFILL;
3479: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3480: r->man->next = ROFF_NEXT_SIBLING;
3481: return ROFF_IGN;
3482: }
3483:
3484: static int
1.297 schwarze 3485: roff_onearg(ROFF_ARGS)
3486: {
3487: struct roff_node *n;
3488: char *cp;
1.305 schwarze 3489: int npos;
1.297 schwarze 3490:
1.302 schwarze 3491: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.320 schwarze 3492: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
3493: tok == ROFF_ti))
1.302 schwarze 3494: man_breakscope(r->man, tok);
3495:
1.309 schwarze 3496: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.305 schwarze 3497: r->man->last = roffce_node;
3498: r->man->next = ROFF_NEXT_SIBLING;
3499: }
3500:
1.297 schwarze 3501: roff_elem_alloc(r->man, ln, ppos, tok);
3502: n = r->man->last;
3503:
3504: cp = buf->buf + pos;
3505: if (*cp != '\0') {
3506: while (*cp != '\0' && *cp != ' ')
3507: cp++;
3508: while (*cp == ' ')
3509: *cp++ = '\0';
3510: if (*cp != '\0')
1.350 schwarze 3511: mandoc_msg(MANDOCERR_ARG_EXCESS,
3512: ln, (int)(cp - buf->buf),
1.297 schwarze 3513: "%s ... %s", roff_name[tok], cp);
3514: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.300 schwarze 3515: }
3516:
1.309 schwarze 3517: if (tok == ROFF_ce || tok == ROFF_rj) {
3518: if (r->man->last->type == ROFFT_ELEM) {
1.305 schwarze 3519: roff_word_alloc(r->man, ln, pos, "1");
3520: r->man->last->flags |= NODE_NOSRC;
3521: }
3522: npos = 0;
3523: if (roff_evalnum(r, ln, r->man->last->string, &npos,
3524: &roffce_lines, 0) == 0) {
1.350 schwarze 3525: mandoc_msg(MANDOCERR_CE_NONUM,
3526: ln, pos, "ce %s", buf->buf + pos);
1.305 schwarze 3527: roffce_lines = 1;
3528: }
3529: if (roffce_lines < 1) {
3530: r->man->last = r->man->last->parent;
3531: roffce_node = NULL;
3532: roffce_lines = 0;
3533: } else
3534: roffce_node = r->man->last->parent;
3535: } else {
3536: n->flags |= NODE_VALID | NODE_ENDED;
3537: r->man->last = n;
3538: }
3539: n->flags |= NODE_LINE;
1.300 schwarze 3540: r->man->next = ROFF_NEXT_SIBLING;
3541: return ROFF_IGN;
3542: }
3543:
1.340 schwarze 3544: static int
1.300 schwarze 3545: roff_manyarg(ROFF_ARGS)
3546: {
3547: struct roff_node *n;
3548: char *sp, *ep;
3549:
3550: roff_elem_alloc(r->man, ln, ppos, tok);
3551: n = r->man->last;
3552:
3553: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3554: while (*ep != '\0' && *ep != ' ')
3555: ep++;
3556: while (*ep == ' ')
3557: *ep++ = '\0';
3558: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.297 schwarze 3559: }
3560:
3561: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3562: r->man->last = n;
3563: r->man->next = ROFF_NEXT_SIBLING;
1.277 schwarze 3564: return ROFF_IGN;
1.251 schwarze 3565: }
3566:
1.340 schwarze 3567: static int
1.311 schwarze 3568: roff_als(ROFF_ARGS)
3569: {
3570: char *oldn, *newn, *end, *value;
3571: size_t oldsz, newsz, valsz;
3572:
3573: newn = oldn = buf->buf + pos;
3574: if (*newn == '\0')
3575: return ROFF_IGN;
3576:
3577: newsz = roff_getname(r, &oldn, ln, pos);
1.363 schwarze 3578: if (newn[newsz] == '\\' || newn[newsz] == '\t' || *oldn == '\0')
1.311 schwarze 3579: return ROFF_IGN;
3580:
3581: end = oldn;
3582: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3583: if (oldsz == 0)
3584: return ROFF_IGN;
3585:
1.338 schwarze 3586: valsz = mandoc_asprintf(&value, ".%.*s \\$@\\\"\n",
1.315 schwarze 3587: (int)oldsz, oldn);
1.311 schwarze 3588: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3589: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3590: free(value);
1.364 schwarze 3591: return ROFF_IGN;
3592: }
3593:
3594: /*
3595: * The .break request only makes sense inside conditionals,
3596: * and that case is already handled in roff_cond_sub().
3597: */
3598: static int
3599: roff_break(ROFF_ARGS)
3600: {
3601: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, pos, "break");
1.296 schwarze 3602: return ROFF_IGN;
1.92 schwarze 3603: }
3604:
1.340 schwarze 3605: static int
1.174 kristaps 3606: roff_cc(ROFF_ARGS)
3607: {
3608: const char *p;
3609:
1.238 schwarze 3610: p = buf->buf + pos;
1.174 kristaps 3611:
1.238 schwarze 3612: if (*p == '\0' || (r->control = *p++) == '.')
1.303 schwarze 3613: r->control = '\0';
1.174 kristaps 3614:
1.238 schwarze 3615: if (*p != '\0')
1.350 schwarze 3616: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.260 schwarze 3617: ln, p - buf->buf, "cc ... %s", p);
1.174 kristaps 3618:
1.341 schwarze 3619: return ROFF_IGN;
3620: }
3621:
3622: static int
3623: roff_char(ROFF_ARGS)
3624: {
3625: const char *p, *kp, *vp;
3626: size_t ksz, vsz;
3627: int font;
3628:
3629: /* Parse the character to be replaced. */
3630:
3631: kp = buf->buf + pos;
3632: p = kp + 1;
3633: if (*kp == '\0' || (*kp == '\\' &&
3634: mandoc_escape(&p, NULL, NULL) != ESCAPE_SPECIAL) ||
3635: (*p != ' ' && *p != '\0')) {
1.350 schwarze 3636: mandoc_msg(MANDOCERR_CHAR_ARG, ln, pos, "char %s", kp);
1.341 schwarze 3637: return ROFF_IGN;
3638: }
3639: ksz = p - kp;
3640: while (*p == ' ')
3641: p++;
3642:
3643: /*
3644: * If the replacement string contains a font escape sequence,
3645: * we have to restore the font at the end.
3646: */
3647:
3648: vp = p;
3649: vsz = strlen(p);
3650: font = 0;
3651: while (*p != '\0') {
3652: if (*p++ != '\\')
3653: continue;
3654: switch (mandoc_escape(&p, NULL, NULL)) {
3655: case ESCAPE_FONT:
3656: case ESCAPE_FONTROMAN:
3657: case ESCAPE_FONTITALIC:
3658: case ESCAPE_FONTBOLD:
3659: case ESCAPE_FONTBI:
1.342 schwarze 3660: case ESCAPE_FONTCW:
1.341 schwarze 3661: case ESCAPE_FONTPREV:
3662: font++;
3663: break;
3664: default:
3665: break;
3666: }
3667: }
3668: if (font > 1)
1.350 schwarze 3669: mandoc_msg(MANDOCERR_CHAR_FONT,
3670: ln, (int)(vp - buf->buf), "%s", vp);
1.341 schwarze 3671:
3672: /*
3673: * Approximate the effect of .char using the .tr tables.
3674: * XXX In groff, .char and .tr interact differently.
3675: */
3676:
3677: if (ksz == 1) {
3678: if (r->xtab == NULL)
3679: r->xtab = mandoc_calloc(128, sizeof(*r->xtab));
3680: assert((unsigned int)*kp < 128);
3681: free(r->xtab[(int)*kp].p);
3682: r->xtab[(int)*kp].sz = mandoc_asprintf(&r->xtab[(int)*kp].p,
3683: "%s%s", vp, font ? "\fP" : "");
3684: } else {
3685: roff_setstrn(&r->xmbtab, kp, ksz, vp, vsz, 0);
3686: if (font)
3687: roff_setstrn(&r->xmbtab, kp, ksz, "\\fP", 3, 1);
3688: }
1.277 schwarze 3689: return ROFF_IGN;
1.174 kristaps 3690: }
3691:
1.340 schwarze 3692: static int
1.303 schwarze 3693: roff_ec(ROFF_ARGS)
3694: {
3695: const char *p;
3696:
3697: p = buf->buf + pos;
3698: if (*p == '\0')
3699: r->escape = '\\';
3700: else {
3701: r->escape = *p;
3702: if (*++p != '\0')
1.350 schwarze 3703: mandoc_msg(MANDOCERR_ARG_EXCESS, ln,
3704: (int)(p - buf->buf), "ec ... %s", p);
1.303 schwarze 3705: }
3706: return ROFF_IGN;
3707: }
3708:
1.340 schwarze 3709: static int
1.303 schwarze 3710: roff_eo(ROFF_ARGS)
3711: {
3712: r->escape = '\0';
3713: if (buf->buf[pos] != '\0')
1.350 schwarze 3714: mandoc_msg(MANDOCERR_ARG_SKIP,
1.303 schwarze 3715: ln, pos, "eo %s", buf->buf + pos);
3716: return ROFF_IGN;
1.330 schwarze 3717: }
3718:
1.340 schwarze 3719: static int
1.330 schwarze 3720: roff_nop(ROFF_ARGS)
3721: {
3722: while (buf->buf[pos] == ' ')
3723: pos++;
3724: *offs = pos;
3725: return ROFF_RERUN;
1.303 schwarze 3726: }
3727:
1.340 schwarze 3728: static int
1.164 kristaps 3729: roff_tr(ROFF_ARGS)
3730: {
3731: const char *p, *first, *second;
3732: size_t fsz, ssz;
3733: enum mandoc_esc esc;
3734:
1.238 schwarze 3735: p = buf->buf + pos;
1.164 kristaps 3736:
1.238 schwarze 3737: if (*p == '\0') {
1.350 schwarze 3738: mandoc_msg(MANDOCERR_REQ_EMPTY, ln, ppos, "tr");
1.277 schwarze 3739: return ROFF_IGN;
1.164 kristaps 3740: }
3741:
1.238 schwarze 3742: while (*p != '\0') {
1.164 kristaps 3743: fsz = ssz = 1;
3744:
3745: first = p++;
1.238 schwarze 3746: if (*first == '\\') {
1.164 kristaps 3747: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3748: if (esc == ESCAPE_ERROR) {
1.350 schwarze 3749: mandoc_msg(MANDOCERR_ESC_BAD, ln,
3750: (int)(p - buf->buf), "%s", first);
1.277 schwarze 3751: return ROFF_IGN;
1.164 kristaps 3752: }
3753: fsz = (size_t)(p - first);
3754: }
3755:
3756: second = p++;
1.238 schwarze 3757: if (*second == '\\') {
1.164 kristaps 3758: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3759: if (esc == ESCAPE_ERROR) {
1.350 schwarze 3760: mandoc_msg(MANDOCERR_ESC_BAD, ln,
3761: (int)(p - buf->buf), "%s", second);
1.277 schwarze 3762: return ROFF_IGN;
1.164 kristaps 3763: }
3764: ssz = (size_t)(p - second);
1.238 schwarze 3765: } else if (*second == '\0') {
1.350 schwarze 3766: mandoc_msg(MANDOCERR_TR_ODD, ln,
3767: (int)(first - buf->buf), "tr %s", first);
1.164 kristaps 3768: second = " ";
1.165 kristaps 3769: p--;
1.164 kristaps 3770: }
3771:
1.167 kristaps 3772: if (fsz > 1) {
1.207 schwarze 3773: roff_setstrn(&r->xmbtab, first, fsz,
3774: second, ssz, 0);
1.167 kristaps 3775: continue;
3776: }
3777:
1.238 schwarze 3778: if (r->xtab == NULL)
1.207 schwarze 3779: r->xtab = mandoc_calloc(128,
3780: sizeof(struct roffstr));
1.167 kristaps 3781:
3782: free(r->xtab[(int)*first].p);
3783: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3784: r->xtab[(int)*first].sz = ssz;
1.164 kristaps 3785: }
3786:
1.277 schwarze 3787: return ROFF_IGN;
1.164 kristaps 3788: }
3789:
1.339 schwarze 3790: /*
3791: * Implementation of the .return request.
3792: * There is no need to call roff_userret() from here.
3793: * The read module will call that after rewinding the reader stack
3794: * to the place from where the current macro was called.
3795: */
1.340 schwarze 3796: static int
1.339 schwarze 3797: roff_return(ROFF_ARGS)
3798: {
3799: if (r->mstackpos >= 0)
1.340 schwarze 3800: return ROFF_IGN | ROFF_USERRET;
1.339 schwarze 3801:
1.350 schwarze 3802: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "return");
1.339 schwarze 3803: return ROFF_IGN;
3804: }
3805:
1.340 schwarze 3806: static int
1.306 schwarze 3807: roff_rn(ROFF_ARGS)
3808: {
3809: const char *value;
3810: char *oldn, *newn, *end;
3811: size_t oldsz, newsz;
1.315 schwarze 3812: int deftype;
1.306 schwarze 3813:
3814: oldn = newn = buf->buf + pos;
3815: if (*oldn == '\0')
3816: return ROFF_IGN;
3817:
3818: oldsz = roff_getname(r, &newn, ln, pos);
1.363 schwarze 3819: if (oldn[oldsz] == '\\' || oldn[oldsz] == '\t' || *newn == '\0')
1.306 schwarze 3820: return ROFF_IGN;
3821:
3822: end = newn;
3823: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3824: if (newsz == 0)
3825: return ROFF_IGN;
3826:
1.315 schwarze 3827: deftype = ROFFDEF_ANY;
3828: value = roff_getstrn(r, oldn, oldsz, &deftype);
3829: switch (deftype) {
3830: case ROFFDEF_USER:
1.306 schwarze 3831: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3832: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3833: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.315 schwarze 3834: break;
3835: case ROFFDEF_PRE:
3836: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3837: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3838: break;
3839: case ROFFDEF_REN:
1.306 schwarze 3840: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3841: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.315 schwarze 3842: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3843: break;
3844: case ROFFDEF_STD:
1.306 schwarze 3845: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.315 schwarze 3846: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3847: break;
3848: default:
3849: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3850: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3851: break;
3852: }
1.306 schwarze 3853: return ROFF_IGN;
3854: }
3855:
1.340 schwarze 3856: static int
1.339 schwarze 3857: roff_shift(ROFF_ARGS)
3858: {
3859: struct mctx *ctx;
3860: int levels, i;
3861:
3862: levels = 1;
3863: if (buf->buf[pos] != '\0' &&
3864: roff_evalnum(r, ln, buf->buf, &pos, &levels, 0) == 0) {
1.350 schwarze 3865: mandoc_msg(MANDOCERR_CE_NONUM,
1.339 schwarze 3866: ln, pos, "shift %s", buf->buf + pos);
3867: levels = 1;
3868: }
3869: if (r->mstackpos < 0) {
1.350 schwarze 3870: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "shift");
1.339 schwarze 3871: return ROFF_IGN;
3872: }
3873: ctx = r->mstack + r->mstackpos;
3874: if (levels > ctx->argc) {
1.350 schwarze 3875: mandoc_msg(MANDOCERR_SHIFT,
1.339 schwarze 3876: ln, pos, "%d, but max is %d", levels, ctx->argc);
3877: levels = ctx->argc;
3878: }
3879: if (levels == 0)
3880: return ROFF_IGN;
3881: for (i = 0; i < levels; i++)
3882: free(ctx->argv[i]);
3883: ctx->argc -= levels;
3884: for (i = 0; i < ctx->argc; i++)
3885: ctx->argv[i] = ctx->argv[i + levels];
3886: return ROFF_IGN;
3887: }
3888:
1.340 schwarze 3889: static int
1.105 kristaps 3890: roff_so(ROFF_ARGS)
3891: {
1.249 schwarze 3892: char *name, *cp;
1.105 kristaps 3893:
1.238 schwarze 3894: name = buf->buf + pos;
1.350 schwarze 3895: mandoc_msg(MANDOCERR_SO, ln, ppos, "so %s", name);
1.105 kristaps 3896:
3897: /*
3898: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3899: * opening anything that's not in our cwd or anything beneath
3900: * it. Thus, explicitly disallow traversing up the file-system
3901: * or using absolute paths.
3902: */
3903:
1.238 schwarze 3904: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.350 schwarze 3905: mandoc_msg(MANDOCERR_SO_PATH, ln, ppos, ".so %s", name);
1.249 schwarze 3906: buf->sz = mandoc_asprintf(&cp,
3907: ".sp\nSee the file %s.\n.sp", name) + 1;
3908: free(buf->buf);
3909: buf->buf = cp;
3910: *offs = 0;
1.277 schwarze 3911: return ROFF_REPARSE;
1.105 kristaps 3912: }
3913:
3914: *offs = pos;
1.277 schwarze 3915: return ROFF_SO;
1.105 kristaps 3916: }
1.92 schwarze 3917:
1.266 schwarze 3918: /* --- user defined strings and macros ------------------------------------ */
3919:
1.340 schwarze 3920: static int
1.106 kristaps 3921: roff_userdef(ROFF_ARGS)
1.99 kristaps 3922: {
1.339 schwarze 3923: struct mctx *ctx;
3924: char *arg, *ap, *dst, *src;
3925: size_t sz;
3926:
1.365 schwarze 3927: /* If the macro is empty, ignore it altogether. */
3928:
3929: if (*r->current_string == '\0')
3930: return ROFF_IGN;
3931:
1.339 schwarze 3932: /* Initialize a new macro stack context. */
3933:
3934: if (++r->mstackpos == r->mstacksz) {
3935: r->mstack = mandoc_recallocarray(r->mstack,
3936: r->mstacksz, r->mstacksz + 8, sizeof(*r->mstack));
3937: r->mstacksz += 8;
3938: }
3939: ctx = r->mstack + r->mstackpos;
3940: ctx->argsz = 0;
3941: ctx->argc = 0;
3942: ctx->argv = NULL;
3943:
3944: /*
3945: * Collect pointers to macro argument strings,
3946: * NUL-terminating them and escaping quotes.
3947: */
3948:
3949: src = buf->buf + pos;
3950: while (*src != '\0') {
3951: if (ctx->argc == ctx->argsz) {
3952: ctx->argsz += 8;
3953: ctx->argv = mandoc_reallocarray(ctx->argv,
3954: ctx->argsz, sizeof(*ctx->argv));
3955: }
1.355 schwarze 3956: arg = roff_getarg(r, &src, ln, &pos);
1.339 schwarze 3957: sz = 1; /* For the terminating NUL. */
3958: for (ap = arg; *ap != '\0'; ap++)
3959: sz += *ap == '"' ? 4 : 1;
3960: ctx->argv[ctx->argc++] = dst = mandoc_malloc(sz);
3961: for (ap = arg; *ap != '\0'; ap++) {
3962: if (*ap == '"') {
3963: memcpy(dst, "\\(dq", 4);
3964: dst += 4;
3965: } else
3966: *dst++ = *ap;
1.106 kristaps 3967: }
1.339 schwarze 3968: *dst = '\0';
1.355 schwarze 3969: free(arg);
1.337 schwarze 3970: }
3971:
1.339 schwarze 3972: /* Replace the macro invocation by the macro definition. */
1.263 schwarze 3973:
1.238 schwarze 3974: free(buf->buf);
1.339 schwarze 3975: buf->buf = mandoc_strdup(r->current_string);
3976: buf->sz = strlen(buf->buf) + 1;
1.248 schwarze 3977: *offs = 0;
1.106 kristaps 3978:
1.365 schwarze 3979: return buf->buf[buf->sz - 2] == '\n' ?
1.340 schwarze 3980: ROFF_REPARSE | ROFF_USERCALL : ROFF_IGN | ROFF_APPEND;
1.99 kristaps 3981: }
1.121 schwarze 3982:
1.306 schwarze 3983: /*
3984: * Calling a high-level macro that was renamed with .rn.
3985: * r->current_string has already been set up by roff_parse().
3986: */
1.340 schwarze 3987: static int
1.306 schwarze 3988: roff_renamed(ROFF_ARGS)
3989: {
3990: char *nbuf;
3991:
1.315 schwarze 3992: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
3993: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.306 schwarze 3994: free(buf->buf);
3995: buf->buf = nbuf;
1.329 schwarze 3996: *offs = 0;
1.306 schwarze 3997: return ROFF_CONT;
3998: }
3999:
1.362 schwarze 4000: /*
4001: * Measure the length in bytes of the roff identifier at *cpp
4002: * and advance the pointer to the next word.
4003: */
1.212 schwarze 4004: static size_t
1.121 schwarze 4005: roff_getname(struct roff *r, char **cpp, int ln, int pos)
4006: {
4007: char *name, *cp;
1.212 schwarze 4008: size_t namesz;
1.121 schwarze 4009:
4010: name = *cpp;
1.362 schwarze 4011: if (*name == '\0')
1.277 schwarze 4012: return 0;
1.121 schwarze 4013:
1.362 schwarze 4014: /* Advance cp to the byte after the end of the name. */
4015:
1.212 schwarze 4016: for (cp = name; 1; cp++) {
1.362 schwarze 4017: namesz = cp - name;
1.363 schwarze 4018: if (*cp == '\0')
1.212 schwarze 4019: break;
1.363 schwarze 4020: if (*cp == ' ' || *cp == '\t') {
4021: cp++;
4022: break;
4023: }
1.362 schwarze 4024: if (*cp != '\\')
1.121 schwarze 4025: continue;
1.362 schwarze 4026: if (cp[1] == '{' || cp[1] == '}')
1.215 schwarze 4027: break;
1.362 schwarze 4028: if (*++cp == '\\')
1.121 schwarze 4029: continue;
1.350 schwarze 4030: mandoc_msg(MANDOCERR_NAMESC, ln, pos,
1.224 schwarze 4031: "%.*s", (int)(cp - name + 1), name);
1.212 schwarze 4032: mandoc_escape((const char **)&cp, NULL, NULL);
4033: break;
1.121 schwarze 4034: }
4035:
4036: /* Read past spaces. */
1.362 schwarze 4037:
4038: while (*cp == ' ')
1.121 schwarze 4039: cp++;
4040:
4041: *cpp = cp;
1.277 schwarze 4042: return namesz;
1.121 schwarze 4043: }
4044:
1.106 kristaps 4045: /*
4046: * Store *string into the user-defined string called *name.
4047: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.193 schwarze 4048: * append == 0: replace mode
4049: * append == 1: single-line append mode
4050: * append == 2: multiline append mode, append '\n' after each call
1.106 kristaps 4051: */
1.94 kristaps 4052: static void
1.106 kristaps 4053: roff_setstr(struct roff *r, const char *name, const char *string,
1.193 schwarze 4054: int append)
1.92 schwarze 4055: {
1.315 schwarze 4056: size_t namesz;
1.164 kristaps 4057:
1.315 schwarze 4058: namesz = strlen(name);
4059: roff_setstrn(&r->strtab, name, namesz, string,
1.207 schwarze 4060: string ? strlen(string) : 0, append);
1.315 schwarze 4061: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.164 kristaps 4062: }
4063:
4064: static void
1.166 kristaps 4065: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.193 schwarze 4066: const char *string, size_t stringsz, int append)
1.164 kristaps 4067: {
1.166 kristaps 4068: struct roffkv *n;
1.164 kristaps 4069: char *c;
4070: int i;
4071: size_t oldch, newch;
1.92 schwarze 4072:
1.106 kristaps 4073: /* Search for an existing string with the same name. */
1.164 kristaps 4074: n = *r;
4075:
1.211 schwarze 4076: while (n && (namesz != n->key.sz ||
4077: strncmp(n->key.p, name, namesz)))
1.92 schwarze 4078: n = n->next;
1.94 kristaps 4079:
4080: if (NULL == n) {
1.106 kristaps 4081: /* Create a new string table entry. */
1.166 kristaps 4082: n = mandoc_malloc(sizeof(struct roffkv));
4083: n->key.p = mandoc_strndup(name, namesz);
4084: n->key.sz = namesz;
4085: n->val.p = NULL;
4086: n->val.sz = 0;
1.164 kristaps 4087: n->next = *r;
4088: *r = n;
1.193 schwarze 4089: } else if (0 == append) {
1.166 kristaps 4090: free(n->val.p);
4091: n->val.p = NULL;
4092: n->val.sz = 0;
1.106 kristaps 4093: }
4094:
4095: if (NULL == string)
4096: return;
4097:
4098: /*
4099: * One additional byte for the '\n' in multiline mode,
4100: * and one for the terminating '\0'.
4101: */
1.193 schwarze 4102: newch = stringsz + (1 < append ? 2u : 1u);
1.164 kristaps 4103:
1.166 kristaps 4104: if (NULL == n->val.p) {
4105: n->val.p = mandoc_malloc(newch);
4106: *n->val.p = '\0';
1.106 kristaps 4107: oldch = 0;
4108: } else {
1.166 kristaps 4109: oldch = n->val.sz;
4110: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.106 kristaps 4111: }
4112:
4113: /* Skip existing content in the destination buffer. */
1.166 kristaps 4114: c = n->val.p + (int)oldch;
1.106 kristaps 4115:
4116: /* Append new content to the destination buffer. */
1.164 kristaps 4117: i = 0;
4118: while (i < (int)stringsz) {
1.106 kristaps 4119: /*
4120: * Rudimentary roff copy mode:
4121: * Handle escaped backslashes.
4122: */
1.164 kristaps 4123: if ('\\' == string[i] && '\\' == string[i + 1])
4124: i++;
4125: *c++ = string[i++];
1.106 kristaps 4126: }
1.94 kristaps 4127:
1.106 kristaps 4128: /* Append terminating bytes. */
1.193 schwarze 4129: if (1 < append)
1.106 kristaps 4130: *c++ = '\n';
1.163 kristaps 4131:
1.106 kristaps 4132: *c = '\0';
1.166 kristaps 4133: n->val.sz = (int)(c - n->val.p);
1.92 schwarze 4134: }
4135:
1.94 kristaps 4136: static const char *
1.325 schwarze 4137: roff_getstrn(struct roff *r, const char *name, size_t len,
1.315 schwarze 4138: int *deftype)
1.92 schwarze 4139: {
1.315 schwarze 4140: const struct roffkv *n;
1.325 schwarze 4141: int found, i;
1.315 schwarze 4142: enum roff_tok tok;
4143:
1.325 schwarze 4144: found = 0;
4145: for (n = r->strtab; n != NULL; n = n->next) {
4146: if (strncmp(name, n->key.p, len) != 0 ||
4147: n->key.p[len] != '\0' || n->val.p == NULL)
4148: continue;
4149: if (*deftype & ROFFDEF_USER) {
4150: *deftype = ROFFDEF_USER;
4151: return n->val.p;
4152: } else {
4153: found = 1;
4154: break;
4155: }
4156: }
4157: for (n = r->rentab; n != NULL; n = n->next) {
4158: if (strncmp(name, n->key.p, len) != 0 ||
4159: n->key.p[len] != '\0' || n->val.p == NULL)
4160: continue;
4161: if (*deftype & ROFFDEF_REN) {
4162: *deftype = ROFFDEF_REN;
4163: return n->val.p;
4164: } else {
4165: found = 1;
4166: break;
1.315 schwarze 4167: }
4168: }
1.325 schwarze 4169: for (i = 0; i < PREDEFS_MAX; i++) {
4170: if (strncmp(name, predefs[i].name, len) != 0 ||
4171: predefs[i].name[len] != '\0')
4172: continue;
4173: if (*deftype & ROFFDEF_PRE) {
4174: *deftype = ROFFDEF_PRE;
4175: return predefs[i].str;
4176: } else {
4177: found = 1;
4178: break;
1.315 schwarze 4179: }
4180: }
1.356 schwarze 4181: if (r->man->meta.macroset != MACROSET_MAN) {
1.325 schwarze 4182: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
4183: if (strncmp(name, roff_name[tok], len) != 0 ||
4184: roff_name[tok][len] != '\0')
4185: continue;
4186: if (*deftype & ROFFDEF_STD) {
4187: *deftype = ROFFDEF_STD;
4188: return NULL;
4189: } else {
4190: found = 1;
4191: break;
1.315 schwarze 4192: }
4193: }
4194: }
1.356 schwarze 4195: if (r->man->meta.macroset != MACROSET_MDOC) {
1.325 schwarze 4196: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
4197: if (strncmp(name, roff_name[tok], len) != 0 ||
4198: roff_name[tok][len] != '\0')
4199: continue;
4200: if (*deftype & ROFFDEF_STD) {
4201: *deftype = ROFFDEF_STD;
4202: return NULL;
4203: } else {
4204: found = 1;
4205: break;
1.315 schwarze 4206: }
4207: }
1.325 schwarze 4208: }
4209:
4210: if (found == 0 && *deftype != ROFFDEF_ANY) {
4211: if (*deftype & ROFFDEF_REN) {
4212: /*
4213: * This might still be a request,
4214: * so do not treat it as undefined yet.
4215: */
4216: *deftype = ROFFDEF_UNDEF;
4217: return NULL;
1.315 schwarze 4218: }
1.325 schwarze 4219:
4220: /* Using an undefined string defines it to be empty. */
4221:
4222: roff_setstrn(&r->strtab, name, len, "", 0, 0);
4223: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.315 schwarze 4224: }
1.325 schwarze 4225:
1.315 schwarze 4226: *deftype = 0;
1.277 schwarze 4227: return NULL;
1.92 schwarze 4228: }
4229:
1.94 kristaps 4230: static void
1.167 kristaps 4231: roff_freestr(struct roffkv *r)
1.92 schwarze 4232: {
1.166 kristaps 4233: struct roffkv *n, *nn;
1.92 schwarze 4234:
1.167 kristaps 4235: for (n = r; n; n = nn) {
1.166 kristaps 4236: free(n->key.p);
4237: free(n->val.p);
1.92 schwarze 4238: nn = n->next;
4239: free(n);
4240: }
1.114 kristaps 4241: }
1.266 schwarze 4242:
4243: /* --- accessors and utility functions ------------------------------------ */
1.164 kristaps 4244:
4245: /*
4246: * Duplicate an input string, making the appropriate character
4247: * conversations (as stipulated by `tr') along the way.
4248: * Returns a heap-allocated string with all the replacements made.
4249: */
4250: char *
4251: roff_strdup(const struct roff *r, const char *p)
4252: {
1.166 kristaps 4253: const struct roffkv *cp;
1.164 kristaps 4254: char *res;
4255: const char *pp;
4256: size_t ssz, sz;
4257: enum mandoc_esc esc;
4258:
1.167 kristaps 4259: if (NULL == r->xmbtab && NULL == r->xtab)
1.277 schwarze 4260: return mandoc_strdup(p);
1.164 kristaps 4261: else if ('\0' == *p)
1.277 schwarze 4262: return mandoc_strdup("");
1.164 kristaps 4263:
4264: /*
4265: * Step through each character looking for term matches
4266: * (remember that a `tr' can be invoked with an escape, which is
4267: * a glyph but the escape is multi-character).
4268: * We only do this if the character hash has been initialised
4269: * and the string is >0 length.
4270: */
4271:
4272: res = NULL;
4273: ssz = 0;
4274:
4275: while ('\0' != *p) {
1.289 schwarze 4276: assert((unsigned int)*p < 128);
4277: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.167 kristaps 4278: sz = r->xtab[(int)*p].sz;
4279: res = mandoc_realloc(res, ssz + sz + 1);
4280: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
4281: ssz += sz;
4282: p++;
4283: continue;
4284: } else if ('\\' != *p) {
4285: res = mandoc_realloc(res, ssz + 2);
4286: res[ssz++] = *p++;
4287: continue;
4288: }
4289:
1.164 kristaps 4290: /* Search for term matches. */
1.167 kristaps 4291: for (cp = r->xmbtab; cp; cp = cp->next)
1.166 kristaps 4292: if (0 == strncmp(p, cp->key.p, cp->key.sz))
1.164 kristaps 4293: break;
4294:
4295: if (NULL != cp) {
4296: /*
4297: * A match has been found.
4298: * Append the match to the array and move
4299: * forward by its keysize.
4300: */
1.207 schwarze 4301: res = mandoc_realloc(res,
4302: ssz + cp->val.sz + 1);
1.166 kristaps 4303: memcpy(res + ssz, cp->val.p, cp->val.sz);
4304: ssz += cp->val.sz;
4305: p += (int)cp->key.sz;
1.164 kristaps 4306: continue;
4307: }
4308:
1.167 kristaps 4309: /*
4310: * Handle escapes carefully: we need to copy
4311: * over just the escape itself, or else we might
4312: * do replacements within the escape itself.
4313: * Make sure to pass along the bogus string.
4314: */
4315: pp = p++;
4316: esc = mandoc_escape(&p, NULL, NULL);
4317: if (ESCAPE_ERROR == esc) {
4318: sz = strlen(pp);
1.164 kristaps 4319: res = mandoc_realloc(res, ssz + sz + 1);
4320: memcpy(res + ssz, pp, sz);
1.167 kristaps 4321: break;
1.164 kristaps 4322: }
1.207 schwarze 4323: /*
4324: * We bail out on bad escapes.
1.167 kristaps 4325: * No need to warn: we already did so when
1.355 schwarze 4326: * roff_expand() was called.
1.167 kristaps 4327: */
4328: sz = (int)(p - pp);
4329: res = mandoc_realloc(res, ssz + sz + 1);
4330: memcpy(res + ssz, pp, sz);
4331: ssz += sz;
1.164 kristaps 4332: }
4333:
4334: res[(int)ssz] = '\0';
1.277 schwarze 4335: return res;
1.227 schwarze 4336: }
4337:
4338: int
4339: roff_getformat(const struct roff *r)
4340: {
4341:
1.277 schwarze 4342: return r->format;
1.174 kristaps 4343: }
4344:
4345: /*
1.207 schwarze 4346: * Find out whether a line is a macro line or not.
1.174 kristaps 4347: * If it is, adjust the current position and return one; if it isn't,
4348: * return zero and don't change the current position.
4349: * If the control character has been set with `.cc', then let that grain
4350: * precedence.
4351: * This is slighly contrary to groff, where using the non-breaking
4352: * control character when `cc' has been invoked will cause the
4353: * non-breaking macro contents to be printed verbatim.
4354: */
4355: int
4356: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
4357: {
4358: int pos;
4359:
4360: pos = *ppos;
4361:
1.303 schwarze 4362: if (r->control != '\0' && cp[pos] == r->control)
1.174 kristaps 4363: pos++;
1.303 schwarze 4364: else if (r->control != '\0')
1.277 schwarze 4365: return 0;
1.174 kristaps 4366: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
4367: pos += 2;
4368: else if ('.' == cp[pos] || '\'' == cp[pos])
4369: pos++;
4370: else
1.277 schwarze 4371: return 0;
1.174 kristaps 4372:
4373: while (' ' == cp[pos] || '\t' == cp[pos])
4374: pos++;
4375:
4376: *ppos = pos;
1.277 schwarze 4377: return 1;
1.74 kristaps 4378: }
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