Annotation of mandoc/roff.c, Revision 1.383
1.383 ! schwarze 1: /* $Id: roff.c,v 1.382 2022/04/24 13:38:46 schwarze Exp $ */
1.1 kristaps 2: /*
1.381 schwarze 3: * Copyright (c) 2010-2015, 2017-2022 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);
1.380 schwarze 864: free(man->os_r);
1.265 schwarze 865: free(man);
866: }
867:
868: struct roff_man *
1.351 schwarze 869: roff_man_alloc(struct roff *roff, const char *os_s, int quick)
1.265 schwarze 870: {
871: struct roff_man *man;
872:
873: man = mandoc_calloc(1, sizeof(*man));
874: man->roff = roff;
1.316 schwarze 875: man->os_s = os_s;
1.265 schwarze 876: man->quick = quick;
877: roff_man_alloc1(man);
1.296 schwarze 878: roff->man = man;
1.277 schwarze 879: return man;
1.67 kristaps 880: }
881:
1.266 schwarze 882: /* --- syntax tree handling ----------------------------------------------- */
883:
884: struct roff_node *
885: roff_node_alloc(struct roff_man *man, int line, int pos,
886: enum roff_type type, int tok)
887: {
888: struct roff_node *n;
889:
890: n = mandoc_calloc(1, sizeof(*n));
891: n->line = line;
892: n->pos = pos;
893: n->tok = tok;
894: n->type = type;
895: n->sec = man->lastsec;
896:
897: if (man->flags & MDOC_SYNOPSIS)
1.285 schwarze 898: n->flags |= NODE_SYNPRETTY;
1.266 schwarze 899: else
1.285 schwarze 900: n->flags &= ~NODE_SYNPRETTY;
1.360 schwarze 901: if ((man->flags & (ROFF_NOFILL | ROFF_NONOFILL)) == ROFF_NOFILL)
1.359 schwarze 902: n->flags |= NODE_NOFILL;
903: else
904: n->flags &= ~NODE_NOFILL;
1.266 schwarze 905: if (man->flags & MDOC_NEWLINE)
1.285 schwarze 906: n->flags |= NODE_LINE;
1.266 schwarze 907: man->flags &= ~MDOC_NEWLINE;
908:
1.277 schwarze 909: return n;
1.266 schwarze 910: }
911:
912: void
913: roff_node_append(struct roff_man *man, struct roff_node *n)
914: {
915:
916: switch (man->next) {
917: case ROFF_NEXT_SIBLING:
1.281 schwarze 918: if (man->last->next != NULL) {
919: n->next = man->last->next;
920: man->last->next->prev = n;
921: } else
922: man->last->parent->last = n;
1.266 schwarze 923: man->last->next = n;
924: n->prev = man->last;
925: n->parent = man->last->parent;
926: break;
927: case ROFF_NEXT_CHILD:
1.287 schwarze 928: if (man->last->child != NULL) {
929: n->next = man->last->child;
930: man->last->child->prev = n;
931: } else
932: man->last->last = n;
1.266 schwarze 933: man->last->child = n;
934: n->parent = man->last;
935: break;
936: default:
937: abort();
938: }
1.282 schwarze 939: man->last = n;
1.266 schwarze 940:
941: switch (n->type) {
942: case ROFFT_HEAD:
943: n->parent->head = n;
944: break;
945: case ROFFT_BODY:
1.282 schwarze 946: if (n->end != ENDBODY_NOT)
947: return;
1.266 schwarze 948: n->parent->body = n;
949: break;
950: case ROFFT_TAIL:
951: n->parent->tail = n;
952: break;
953: default:
1.282 schwarze 954: return;
1.266 schwarze 955: }
1.282 schwarze 956:
957: /*
958: * Copy over the normalised-data pointer of our parent. Not
959: * everybody has one, but copying a null pointer is fine.
960: */
961:
962: n->norm = n->parent->norm;
963: assert(n->parent->type == ROFFT_BLOCK);
1.266 schwarze 964: }
965:
1.267 schwarze 966: void
967: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
968: {
969: struct roff_node *n;
970:
971: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
972: n->string = roff_strdup(man->roff, word);
973: roff_node_append(man, n);
1.286 schwarze 974: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 975: man->next = ROFF_NEXT_SIBLING;
976: }
977:
978: void
979: roff_word_append(struct roff_man *man, const char *word)
980: {
981: struct roff_node *n;
982: char *addstr, *newstr;
983:
984: n = man->last;
985: addstr = roff_strdup(man->roff, word);
986: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
987: free(addstr);
988: free(n->string);
989: n->string = newstr;
990: man->next = ROFF_NEXT_SIBLING;
1.268 schwarze 991: }
992:
993: void
994: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
995: {
996: struct roff_node *n;
997:
998: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
999: roff_node_append(man, n);
1000: man->next = ROFF_NEXT_CHILD;
1001: }
1002:
1003: struct roff_node *
1004: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
1005: {
1006: struct roff_node *n;
1007:
1008: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
1009: roff_node_append(man, n);
1010: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1011: return n;
1.267 schwarze 1012: }
1013:
1.266 schwarze 1014: struct roff_node *
1015: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
1016: {
1017: struct roff_node *n;
1018:
1019: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
1020: roff_node_append(man, n);
1021: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1022: return n;
1.266 schwarze 1023: }
1024:
1025: struct roff_node *
1026: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1027: {
1028: struct roff_node *n;
1029:
1030: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1031: roff_node_append(man, n);
1032: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1033: return n;
1.267 schwarze 1034: }
1035:
1.321 schwarze 1036: static void
1.346 schwarze 1037: roff_addtbl(struct roff_man *man, int line, struct tbl_node *tbl)
1.267 schwarze 1038: {
1039: struct roff_node *n;
1.346 schwarze 1040: struct tbl_span *span;
1.267 schwarze 1041:
1.356 schwarze 1042: if (man->meta.macroset == MACROSET_MAN)
1.302 schwarze 1043: man_breakscope(man, ROFF_TS);
1.321 schwarze 1044: while ((span = tbl_span(tbl)) != NULL) {
1.346 schwarze 1045: n = roff_node_alloc(man, line, 0, ROFFT_TBL, TOKEN_NONE);
1.321 schwarze 1046: n->span = span;
1047: roff_node_append(man, n);
1048: n->flags |= NODE_VALID | NODE_ENDED;
1049: man->next = ROFF_NEXT_SIBLING;
1050: }
1.266 schwarze 1051: }
1052:
1053: void
1054: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1055: {
1056:
1057: /* Adjust siblings. */
1058:
1059: if (n->prev)
1060: n->prev->next = n->next;
1061: if (n->next)
1062: n->next->prev = n->prev;
1063:
1064: /* Adjust parent. */
1065:
1066: if (n->parent != NULL) {
1067: if (n->parent->child == n)
1068: n->parent->child = n->next;
1069: if (n->parent->last == n)
1070: n->parent->last = n->prev;
1071: }
1072:
1073: /* Adjust parse point. */
1074:
1075: if (man == NULL)
1076: return;
1077: if (man->last == n) {
1078: if (n->prev == NULL) {
1079: man->last = n->parent;
1080: man->next = ROFF_NEXT_CHILD;
1081: } else {
1082: man->last = n->prev;
1083: man->next = ROFF_NEXT_SIBLING;
1084: }
1085: }
1.356 schwarze 1086: if (man->meta.first == n)
1087: man->meta.first = NULL;
1.344 schwarze 1088: }
1089:
1090: void
1091: roff_node_relink(struct roff_man *man, struct roff_node *n)
1092: {
1093: roff_node_unlink(man, n);
1094: n->prev = n->next = NULL;
1095: roff_node_append(man, n);
1.266 schwarze 1096: }
1097:
1098: void
1099: roff_node_free(struct roff_node *n)
1100: {
1101:
1102: if (n->args != NULL)
1103: mdoc_argv_free(n->args);
1104: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1105: free(n->norm);
1.347 schwarze 1106: eqn_box_free(n->eqn);
1.266 schwarze 1107: free(n->string);
1.374 schwarze 1108: free(n->tag);
1.266 schwarze 1109: free(n);
1110: }
1111:
1112: void
1113: roff_node_delete(struct roff_man *man, struct roff_node *n)
1114: {
1115:
1116: while (n->child != NULL)
1117: roff_node_delete(man, n->child);
1118: roff_node_unlink(man, n);
1119: roff_node_free(n);
1.370 schwarze 1120: }
1121:
1122: int
1123: roff_node_transparent(struct roff_node *n)
1124: {
1125: if (n == NULL)
1126: return 0;
1127: if (n->type == ROFFT_COMMENT || n->flags & NODE_NOPRT)
1128: return 1;
1.373 schwarze 1129: return roff_tok_transparent(n->tok);
1130: }
1131:
1132: int
1133: roff_tok_transparent(enum roff_tok tok)
1134: {
1135: switch (tok) {
1.370 schwarze 1136: case ROFF_ft:
1137: case ROFF_ll:
1138: case ROFF_mc:
1139: case ROFF_po:
1140: case ROFF_ta:
1141: case MDOC_Db:
1142: case MDOC_Es:
1143: case MDOC_Sm:
1144: case MDOC_Tg:
1145: case MAN_DT:
1146: case MAN_UC:
1147: case MAN_PD:
1148: case MAN_AT:
1149: return 1;
1150: default:
1151: return 0;
1152: }
1153: }
1154:
1155: struct roff_node *
1156: roff_node_child(struct roff_node *n)
1157: {
1158: for (n = n->child; roff_node_transparent(n); n = n->next)
1159: continue;
1160: return n;
1161: }
1162:
1163: struct roff_node *
1164: roff_node_prev(struct roff_node *n)
1165: {
1166: do {
1167: n = n->prev;
1168: } while (roff_node_transparent(n));
1169: return n;
1170: }
1171:
1172: struct roff_node *
1173: roff_node_next(struct roff_node *n)
1174: {
1175: do {
1176: n = n->next;
1177: } while (roff_node_transparent(n));
1178: return n;
1.269 schwarze 1179: }
1180:
1181: void
1182: deroff(char **dest, const struct roff_node *n)
1183: {
1184: char *cp;
1185: size_t sz;
1186:
1.371 schwarze 1187: if (n->string == NULL) {
1.269 schwarze 1188: for (n = n->child; n != NULL; n = n->next)
1189: deroff(dest, n);
1190: return;
1191: }
1192:
1.288 schwarze 1193: /* Skip leading whitespace. */
1.269 schwarze 1194:
1.288 schwarze 1195: for (cp = n->string; *cp != '\0'; cp++) {
1.289 schwarze 1196: if (cp[0] == '\\' && cp[1] != '\0' &&
1197: strchr(" %&0^|~", cp[1]) != NULL)
1.269 schwarze 1198: cp++;
1.288 schwarze 1199: else if ( ! isspace((unsigned char)*cp))
1.269 schwarze 1200: break;
1201: }
1202:
1.289 schwarze 1203: /* Skip trailing backslash. */
1204:
1205: sz = strlen(cp);
1.290 schwarze 1206: if (sz > 0 && cp[sz - 1] == '\\')
1.289 schwarze 1207: sz--;
1208:
1.269 schwarze 1209: /* Skip trailing whitespace. */
1210:
1.289 schwarze 1211: for (; sz; sz--)
1.269 schwarze 1212: if ( ! isspace((unsigned char)cp[sz-1]))
1213: break;
1214:
1215: /* Skip empty strings. */
1216:
1217: if (sz == 0)
1218: return;
1219:
1220: if (*dest == NULL) {
1221: *dest = mandoc_strndup(cp, sz);
1222: return;
1223: }
1224:
1225: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1226: free(*dest);
1227: *dest = cp;
1.266 schwarze 1228: }
1229:
1230: /* --- main functions of the roff parser ---------------------------------- */
1231:
1.94 kristaps 1232: /*
1.355 schwarze 1233: * In the current line, expand escape sequences that produce parsable
1234: * input text. Also check the syntax of the remaining escape sequences,
1235: * which typically produce output glyphs or change formatter state.
1.154 kristaps 1236: */
1.340 schwarze 1237: static int
1.355 schwarze 1238: roff_expand(struct roff *r, struct buf *buf, int ln, int pos, char newesc)
1.94 kristaps 1239: {
1.339 schwarze 1240: struct mctx *ctx; /* current macro call context */
1.208 schwarze 1241: char ubuf[24]; /* buffer to print the number */
1.328 schwarze 1242: struct roff_node *n; /* used for header comments */
1.205 schwarze 1243: const char *start; /* start of the string to process */
1.209 schwarze 1244: char *stesc; /* start of an escape sequence ('\\') */
1.352 schwarze 1245: const char *esct; /* type of esccape sequence */
1.328 schwarze 1246: char *ep; /* end of comment string */
1.108 schwarze 1247: const char *stnam; /* start of the name, after "[(*" */
1248: const char *cp; /* end of the name, e.g. before ']' */
1249: const char *res; /* the string to be substituted */
1.238 schwarze 1250: char *nbuf; /* new buffer to copy buf->buf to */
1.181 schwarze 1251: size_t maxl; /* expected length of the escape name */
1252: size_t naml; /* actual length of the escape name */
1.339 schwarze 1253: size_t asz; /* length of the replacement */
1254: size_t rsz; /* length of the rest of the string */
1.237 schwarze 1255: int inaml; /* length returned from mandoc_escape() */
1.181 schwarze 1256: int expand_count; /* to avoid infinite loops */
1.206 schwarze 1257: int npos; /* position in numeric expression */
1.218 schwarze 1258: int arg_complete; /* argument not interrupted by eol */
1.339 schwarze 1259: int quote_args; /* true for \\$@, false for \\$* */
1.303 schwarze 1260: int done; /* no more input available */
1.315 schwarze 1261: int deftype; /* type of definition to paste */
1.323 schwarze 1262: int rcsid; /* kind of RCS id seen */
1.352 schwarze 1263: enum mandocerr err; /* for escape sequence problems */
1.327 schwarze 1264: char sign; /* increment number register */
1.206 schwarze 1265: char term; /* character terminating the escape */
1.94 kristaps 1266:
1.303 schwarze 1267: /* Search forward for comments. */
1268:
1269: done = 0;
1270: start = buf->buf + pos;
1271: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1.355 schwarze 1272: if (stesc[0] != newesc || stesc[1] == '\0')
1.303 schwarze 1273: continue;
1274: stesc++;
1275: if (*stesc != '"' && *stesc != '#')
1276: continue;
1.313 schwarze 1277:
1278: /* Comment found, look for RCS id. */
1279:
1.323 schwarze 1280: rcsid = 0;
1.313 schwarze 1281: if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
1.323 schwarze 1282: rcsid = 1 << MANDOC_OS_OPENBSD;
1.313 schwarze 1283: cp += 8;
1284: } else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
1.323 schwarze 1285: rcsid = 1 << MANDOC_OS_NETBSD;
1.313 schwarze 1286: cp += 7;
1287: }
1288: if (cp != NULL &&
1289: isalnum((unsigned char)*cp) == 0 &&
1.314 schwarze 1290: strchr(cp, '$') != NULL) {
1.323 schwarze 1291: if (r->man->meta.rcsids & rcsid)
1.350 schwarze 1292: mandoc_msg(MANDOCERR_RCS_REP, ln,
1293: (int)(stesc - buf->buf) + 1,
1294: "%s", stesc + 1);
1.323 schwarze 1295: r->man->meta.rcsids |= rcsid;
1.314 schwarze 1296: }
1.313 schwarze 1297:
1298: /* Handle trailing whitespace. */
1299:
1.328 schwarze 1300: ep = strchr(stesc--, '\0') - 1;
1301: if (*ep == '\n') {
1.303 schwarze 1302: done = 1;
1.328 schwarze 1303: ep--;
1.303 schwarze 1304: }
1.328 schwarze 1305: if (*ep == ' ' || *ep == '\t')
1.350 schwarze 1306: mandoc_msg(MANDOCERR_SPACE_EOL,
1307: ln, (int)(ep - buf->buf), NULL);
1.328 schwarze 1308:
1309: /*
1310: * Save comments preceding the title macro
1311: * in the syntax tree.
1312: */
1313:
1.367 schwarze 1314: if (newesc != ASCII_ESC && r->options & MPARSE_COMMENT) {
1.328 schwarze 1315: while (*ep == ' ' || *ep == '\t')
1316: ep--;
1317: ep[1] = '\0';
1318: n = roff_node_alloc(r->man,
1319: ln, stesc + 1 - buf->buf,
1320: ROFFT_COMMENT, TOKEN_NONE);
1321: n->string = mandoc_strdup(stesc + 2);
1322: roff_node_append(r->man, n);
1323: n->flags |= NODE_VALID | NODE_ENDED;
1324: r->man->next = ROFF_NEXT_SIBLING;
1325: }
1326:
1.334 schwarze 1327: /* Line continuation with comment. */
1328:
1329: if (stesc[1] == '#') {
1330: *stesc = '\0';
1.340 schwarze 1331: return ROFF_IGN | ROFF_APPEND;
1.334 schwarze 1332: }
1333:
1334: /* Discard normal comments. */
1.328 schwarze 1335:
1.335 schwarze 1336: while (stesc > start && stesc[-1] == ' ' &&
1337: (stesc == start + 1 || stesc[-2] != '\\'))
1.303 schwarze 1338: stesc--;
1339: *stesc = '\0';
1340: break;
1341: }
1342: if (stesc == start)
1343: return ROFF_CONT;
1344: stesc--;
1345:
1346: /* Notice the end of the input. */
1347:
1348: if (*stesc == '\n') {
1349: *stesc-- = '\0';
1350: done = 1;
1351: }
1352:
1.170 schwarze 1353: expand_count = 0;
1.303 schwarze 1354: while (stesc >= start) {
1.355 schwarze 1355: if (*stesc != newesc) {
1.170 schwarze 1356:
1.355 schwarze 1357: /*
1358: * If we have a non-standard escape character,
1359: * escape literal backslashes because all
1360: * processing in subsequent functions uses
1361: * the standard escaping rules.
1362: */
1.205 schwarze 1363:
1.355 schwarze 1364: if (newesc != ASCII_ESC && *stesc == '\\') {
1.303 schwarze 1365: *stesc = '\0';
1366: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1367: buf->buf, stesc + 1) + 1;
1368: start = nbuf + pos;
1369: stesc = nbuf + (stesc - buf->buf);
1370: free(buf->buf);
1371: buf->buf = nbuf;
1372: }
1.355 schwarze 1373:
1374: /* Search backwards for the next escape. */
1375:
1.303 schwarze 1376: stesc--;
1.205 schwarze 1377: continue;
1.303 schwarze 1378: }
1.205 schwarze 1379:
1380: /* If it is escaped, skip it. */
1381:
1382: for (cp = stesc - 1; cp >= start; cp--)
1.303 schwarze 1383: if (*cp != r->escape)
1.205 schwarze 1384: break;
1385:
1.238 schwarze 1386: if ((stesc - cp) % 2 == 0) {
1.303 schwarze 1387: while (stesc > cp)
1388: *stesc-- = '\\';
1.205 schwarze 1389: continue;
1.303 schwarze 1390: } else if (stesc[1] != '\0') {
1391: *stesc = '\\';
1392: } else {
1393: *stesc-- = '\0';
1394: if (done)
1395: continue;
1396: else
1.340 schwarze 1397: return ROFF_IGN | ROFF_APPEND;
1.205 schwarze 1398: }
1.108 schwarze 1399:
1.206 schwarze 1400: /* Decide whether to expand or to check only. */
1.108 schwarze 1401:
1.206 schwarze 1402: term = '\0';
1.205 schwarze 1403: cp = stesc + 1;
1.381 schwarze 1404: while (*cp == 'E')
1.352 schwarze 1405: cp++;
1406: esct = cp;
1407: switch (*esct) {
1.207 schwarze 1408: case '*':
1.339 schwarze 1409: case '$':
1.181 schwarze 1410: res = NULL;
1411: break;
1.207 schwarze 1412: case 'B':
1413: case 'w':
1.206 schwarze 1414: term = cp[1];
1415: /* FALLTHROUGH */
1.207 schwarze 1416: case 'n':
1.327 schwarze 1417: sign = cp[1];
1418: if (sign == '+' || sign == '-')
1419: cp++;
1.181 schwarze 1420: res = ubuf;
1421: break;
1422: default:
1.352 schwarze 1423: err = MANDOCERR_OK;
1424: switch(mandoc_escape(&cp, &stnam, &inaml)) {
1425: case ESCAPE_SPECIAL:
1426: if (mchars_spec2cp(stnam, inaml) >= 0)
1427: break;
1428: /* FALLTHROUGH */
1429: case ESCAPE_ERROR:
1430: err = MANDOCERR_ESC_BAD;
1431: break;
1432: case ESCAPE_UNDEF:
1433: err = MANDOCERR_ESC_UNDEF;
1434: break;
1435: case ESCAPE_UNSUPP:
1436: err = MANDOCERR_ESC_UNSUPP;
1437: break;
1438: default:
1439: break;
1440: }
1441: if (err != MANDOCERR_OK)
1442: mandoc_msg(err, ln, (int)(stesc - buf->buf),
1.219 schwarze 1443: "%.*s", (int)(cp - stesc), stesc);
1.303 schwarze 1444: stesc--;
1.205 schwarze 1445: continue;
1.152 kristaps 1446: }
1447:
1.205 schwarze 1448: if (EXPAND_LIMIT < ++expand_count) {
1.350 schwarze 1449: mandoc_msg(MANDOCERR_ROFFLOOP,
1.238 schwarze 1450: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1451: return ROFF_IGN;
1.205 schwarze 1452: }
1.108 schwarze 1453:
1454: /*
1455: * The third character decides the length
1.181 schwarze 1456: * of the name of the string or register.
1.108 schwarze 1457: * Save a pointer to the name.
1458: */
1459:
1.238 schwarze 1460: if (term == '\0') {
1.206 schwarze 1461: switch (*++cp) {
1.207 schwarze 1462: case '\0':
1.206 schwarze 1463: maxl = 0;
1464: break;
1.207 schwarze 1465: case '(':
1.206 schwarze 1466: cp++;
1467: maxl = 2;
1468: break;
1.207 schwarze 1469: case '[':
1.206 schwarze 1470: cp++;
1471: term = ']';
1472: maxl = 0;
1473: break;
1474: default:
1475: maxl = 1;
1476: break;
1477: }
1478: } else {
1479: cp += 2;
1.94 kristaps 1480: maxl = 0;
1481: }
1.108 schwarze 1482: stnam = cp;
1.94 kristaps 1483:
1.108 schwarze 1484: /* Advance to the end of the name. */
1.94 kristaps 1485:
1.253 schwarze 1486: naml = 0;
1.218 schwarze 1487: arg_complete = 1;
1.253 schwarze 1488: while (maxl == 0 || naml < maxl) {
1.238 schwarze 1489: if (*cp == '\0') {
1.350 schwarze 1490: mandoc_msg(MANDOCERR_ESC_BAD, ln,
1491: (int)(stesc - buf->buf), "%s", stesc);
1.218 schwarze 1492: arg_complete = 0;
1.206 schwarze 1493: break;
1.153 kristaps 1494: }
1.238 schwarze 1495: if (maxl == 0 && *cp == term) {
1.206 schwarze 1496: cp++;
1.253 schwarze 1497: break;
1498: }
1.352 schwarze 1499: if (*cp++ != '\\' || *esct != 'w') {
1.253 schwarze 1500: naml++;
1501: continue;
1502: }
1503: switch (mandoc_escape(&cp, NULL, NULL)) {
1504: case ESCAPE_SPECIAL:
1505: case ESCAPE_UNICODE:
1506: case ESCAPE_NUMBERED:
1.352 schwarze 1507: case ESCAPE_UNDEF:
1.253 schwarze 1508: case ESCAPE_OVERSTRIKE:
1509: naml++;
1510: break;
1511: default:
1.94 kristaps 1512: break;
1.206 schwarze 1513: }
1.94 kristaps 1514: }
1515:
1.108 schwarze 1516: /*
1517: * Retrieve the replacement string; if it is
1518: * undefined, resume searching for escapes.
1519: */
1520:
1.352 schwarze 1521: switch (*esct) {
1.207 schwarze 1522: case '*':
1.315 schwarze 1523: if (arg_complete) {
1524: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1525: res = roff_getstrn(r, stnam, naml, &deftype);
1.331 schwarze 1526:
1527: /*
1528: * If not overriden, let \*(.T
1529: * through to the formatters.
1530: */
1531:
1532: if (res == NULL && naml == 2 &&
1533: stnam[0] == '.' && stnam[1] == 'T') {
1534: roff_setstrn(&r->strtab,
1535: ".T", 2, NULL, 0, 0);
1536: stesc--;
1537: continue;
1538: }
1.315 schwarze 1539: }
1.206 schwarze 1540: break;
1.339 schwarze 1541: case '$':
1542: if (r->mstackpos < 0) {
1.350 schwarze 1543: mandoc_msg(MANDOCERR_ARG_UNDEF, ln,
1544: (int)(stesc - buf->buf), "%.3s", stesc);
1.339 schwarze 1545: break;
1546: }
1547: ctx = r->mstack + r->mstackpos;
1.352 schwarze 1548: npos = esct[1] - '1';
1.339 schwarze 1549: if (npos >= 0 && npos <= 8) {
1550: res = npos < ctx->argc ?
1551: ctx->argv[npos] : "";
1552: break;
1553: }
1.352 schwarze 1554: if (esct[1] == '*')
1.339 schwarze 1555: quote_args = 0;
1.352 schwarze 1556: else if (esct[1] == '@')
1.339 schwarze 1557: quote_args = 1;
1558: else {
1.350 schwarze 1559: mandoc_msg(MANDOCERR_ARG_NONUM, ln,
1560: (int)(stesc - buf->buf), "%.3s", stesc);
1.339 schwarze 1561: break;
1562: }
1563: asz = 0;
1564: for (npos = 0; npos < ctx->argc; npos++) {
1565: if (npos)
1566: asz++; /* blank */
1567: if (quote_args)
1568: asz += 2; /* quotes */
1569: asz += strlen(ctx->argv[npos]);
1570: }
1571: if (asz != 3) {
1572: rsz = buf->sz - (stesc - buf->buf) - 3;
1573: if (asz < 3)
1574: memmove(stesc + asz, stesc + 3, rsz);
1575: buf->sz += asz - 3;
1576: nbuf = mandoc_realloc(buf->buf, buf->sz);
1577: start = nbuf + pos;
1578: stesc = nbuf + (stesc - buf->buf);
1579: buf->buf = nbuf;
1580: if (asz > 3)
1581: memmove(stesc + asz, stesc + 3, rsz);
1582: }
1583: for (npos = 0; npos < ctx->argc; npos++) {
1584: if (npos)
1585: *stesc++ = ' ';
1586: if (quote_args)
1587: *stesc++ = '"';
1588: cp = ctx->argv[npos];
1589: while (*cp != '\0')
1590: *stesc++ = *cp++;
1591: if (quote_args)
1592: *stesc++ = '"';
1593: }
1594: continue;
1.207 schwarze 1595: case 'B':
1.206 schwarze 1596: npos = 0;
1.218 schwarze 1597: ubuf[0] = arg_complete &&
1.261 schwarze 1598: roff_evalnum(r, ln, stnam, &npos,
1599: NULL, ROFFNUM_SCALE) &&
1.218 schwarze 1600: stnam + npos + 1 == cp ? '1' : '0';
1.206 schwarze 1601: ubuf[1] = '\0';
1602: break;
1.207 schwarze 1603: case 'n':
1.218 schwarze 1604: if (arg_complete)
1605: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.327 schwarze 1606: roff_getregn(r, stnam, naml, sign));
1.218 schwarze 1607: else
1608: ubuf[0] = '\0';
1.206 schwarze 1609: break;
1.207 schwarze 1610: case 'w':
1.218 schwarze 1611: /* use even incomplete args */
1.208 schwarze 1612: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.206 schwarze 1613: 24 * (int)naml);
1614: break;
1615: }
1.94 kristaps 1616:
1.238 schwarze 1617: if (res == NULL) {
1.352 schwarze 1618: if (*esct == '*')
1.350 schwarze 1619: mandoc_msg(MANDOCERR_STR_UNDEF,
1620: ln, (int)(stesc - buf->buf),
1.339 schwarze 1621: "%.*s", (int)naml, stnam);
1.142 kristaps 1622: res = "";
1.246 schwarze 1623: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1.350 schwarze 1624: mandoc_msg(MANDOCERR_ROFFLOOP,
1.246 schwarze 1625: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1626: return ROFF_IGN;
1.94 kristaps 1627: }
1628:
1.108 schwarze 1629: /* Replace the escape sequence by the string. */
1630:
1.209 schwarze 1631: *stesc = '\0';
1.238 schwarze 1632: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1633: buf->buf, res, cp) + 1;
1.94 kristaps 1634:
1.205 schwarze 1635: /* Prepare for the next replacement. */
1.94 kristaps 1636:
1.205 schwarze 1637: start = nbuf + pos;
1.238 schwarze 1638: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1639: free(buf->buf);
1640: buf->buf = nbuf;
1.154 kristaps 1641: }
1.277 schwarze 1642: return ROFF_CONT;
1.154 kristaps 1643: }
1.353 schwarze 1644:
1645: /*
1646: * Parse a quoted or unquoted roff-style request or macro argument.
1647: * Return a pointer to the parsed argument, which is either the original
1648: * pointer or advanced by one byte in case the argument is quoted.
1649: * NUL-terminate the argument in place.
1650: * Collapse pairs of quotes inside quoted arguments.
1651: * Advance the argument pointer to the next argument,
1652: * or to the NUL byte terminating the argument line.
1653: */
1654: char *
1.355 schwarze 1655: roff_getarg(struct roff *r, char **cpp, int ln, int *pos)
1.353 schwarze 1656: {
1.355 schwarze 1657: struct buf buf;
1.366 schwarze 1658: char *cp, *start;
1.355 schwarze 1659: int newesc, pairs, quoted, white;
1.353 schwarze 1660:
1661: /* Quoting can only start with a new word. */
1662: start = *cpp;
1663: quoted = 0;
1664: if ('"' == *start) {
1665: quoted = 1;
1666: start++;
1667: }
1668:
1.355 schwarze 1669: newesc = pairs = white = 0;
1.353 schwarze 1670: for (cp = start; '\0' != *cp; cp++) {
1671:
1672: /*
1673: * Move the following text left
1674: * after quoted quotes and after "\\" and "\t".
1675: */
1676: if (pairs)
1677: cp[-pairs] = cp[0];
1678:
1679: if ('\\' == cp[0]) {
1680: /*
1681: * In copy mode, translate double to single
1682: * backslashes and backslash-t to literal tabs.
1683: */
1684: switch (cp[1]) {
1685: case 'a':
1686: case 't':
1.354 schwarze 1687: cp[-pairs] = '\t';
1.355 schwarze 1688: pairs++;
1689: cp++;
1690: break;
1.353 schwarze 1691: case '\\':
1.355 schwarze 1692: newesc = 1;
1693: cp[-pairs] = ASCII_ESC;
1.353 schwarze 1694: pairs++;
1695: cp++;
1696: break;
1697: case ' ':
1698: /* Skip escaped blanks. */
1699: if (0 == quoted)
1700: cp++;
1701: break;
1702: default:
1703: break;
1704: }
1705: } else if (0 == quoted) {
1706: if (' ' == cp[0]) {
1707: /* Unescaped blanks end unquoted args. */
1708: white = 1;
1709: break;
1710: }
1711: } else if ('"' == cp[0]) {
1712: if ('"' == cp[1]) {
1713: /* Quoted quotes collapse. */
1714: pairs++;
1715: cp++;
1716: } else {
1717: /* Unquoted quotes end quoted args. */
1718: quoted = 2;
1719: break;
1720: }
1721: }
1722: }
1723:
1724: /* Quoted argument without a closing quote. */
1725: if (1 == quoted)
1726: mandoc_msg(MANDOCERR_ARG_QUOTE, ln, *pos, NULL);
1727:
1728: /* NUL-terminate this argument and move to the next one. */
1729: if (pairs)
1730: cp[-pairs] = '\0';
1731: if ('\0' != *cp) {
1732: *cp++ = '\0';
1733: while (' ' == *cp)
1734: cp++;
1735: }
1736: *pos += (int)(cp - start) + (quoted ? 1 : 0);
1737: *cpp = cp;
1738:
1739: if ('\0' == *cp && (white || ' ' == cp[-1]))
1740: mandoc_msg(MANDOCERR_SPACE_EOL, ln, *pos, NULL);
1741:
1.355 schwarze 1742: start = mandoc_strdup(start);
1743: if (newesc == 0)
1744: return start;
1745:
1746: buf.buf = start;
1747: buf.sz = strlen(start) + 1;
1748: buf.next = NULL;
1749: if (roff_expand(r, &buf, ln, 0, ASCII_ESC) & ROFF_IGN) {
1750: free(buf.buf);
1751: buf.buf = mandoc_strdup("");
1752: }
1753: return buf.buf;
1.353 schwarze 1754: }
1755:
1.154 kristaps 1756:
1757: /*
1.275 schwarze 1758: * Process text streams.
1.154 kristaps 1759: */
1.340 schwarze 1760: static int
1.305 schwarze 1761: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.154 kristaps 1762: {
1763: size_t sz;
1764: const char *start;
1.178 schwarze 1765: char *p;
1766: int isz;
1.154 kristaps 1767: enum mandoc_esc esc;
1768:
1.275 schwarze 1769: /* Spring the input line trap. */
1770:
1771: if (roffit_lines == 1) {
1772: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1773: free(buf->buf);
1774: buf->buf = p;
1775: buf->sz = isz + 1;
1776: *offs = 0;
1777: free(roffit_macro);
1778: roffit_lines = 0;
1.277 schwarze 1779: return ROFF_REPARSE;
1.275 schwarze 1780: } else if (roffit_lines > 1)
1781: --roffit_lines;
1782:
1.305 schwarze 1783: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1784: if (roffce_lines < 1) {
1785: r->man->last = roffce_node;
1786: r->man->next = ROFF_NEXT_SIBLING;
1787: roffce_lines = 0;
1788: roffce_node = NULL;
1789: } else
1790: roffce_lines--;
1791: }
1792:
1.275 schwarze 1793: /* Convert all breakable hyphens into ASCII_HYPH. */
1794:
1.238 schwarze 1795: start = p = buf->buf + pos;
1.154 kristaps 1796:
1.238 schwarze 1797: while (*p != '\0') {
1.154 kristaps 1798: sz = strcspn(p, "-\\");
1799: p += sz;
1800:
1.238 schwarze 1801: if (*p == '\0')
1.159 kristaps 1802: break;
1803:
1.238 schwarze 1804: if (*p == '\\') {
1.154 kristaps 1805: /* Skip over escapes. */
1806: p++;
1.189 schwarze 1807: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.238 schwarze 1808: if (esc == ESCAPE_ERROR)
1.154 kristaps 1809: break;
1.264 schwarze 1810: while (*p == '-')
1811: p++;
1.155 kristaps 1812: continue;
1.159 kristaps 1813: } else if (p == start) {
1.158 kristaps 1814: p++;
1.155 kristaps 1815: continue;
1.158 kristaps 1816: }
1.155 kristaps 1817:
1.171 schwarze 1818: if (isalpha((unsigned char)p[-1]) &&
1819: isalpha((unsigned char)p[1]))
1.155 kristaps 1820: *p = ASCII_HYPH;
1821: p++;
1.94 kristaps 1822: }
1.277 schwarze 1823: return ROFF_CONT;
1.94 kristaps 1824: }
1825:
1.340 schwarze 1826: int
1.377 schwarze 1827: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs, size_t len)
1.67 kristaps 1828: {
1.294 schwarze 1829: enum roff_tok t;
1.340 schwarze 1830: int e;
1.238 schwarze 1831: int pos; /* parse point */
1.243 schwarze 1832: int spos; /* saved parse point for messages */
1.238 schwarze 1833: int ppos; /* original offset in buf->buf */
1834: int ctl; /* macro line (boolean) */
1835:
1836: ppos = pos = *offs;
1.377 schwarze 1837:
1838: if (len > 80 && r->tbl == NULL && r->eqn == NULL &&
1839: (r->man->flags & ROFF_NOFILL) == 0 &&
1840: strchr(" .\\", buf->buf[pos]) == NULL &&
1841: buf->buf[pos] != r->control &&
1842: strcspn(buf->buf, " ") < 80)
1843: mandoc_msg(MANDOCERR_TEXT_LONG, ln, (int)len - 1,
1844: "%.20s...", buf->buf + pos);
1.79 kristaps 1845:
1.230 schwarze 1846: /* Handle in-line equation delimiters. */
1847:
1.236 schwarze 1848: if (r->tbl == NULL &&
1849: r->last_eqn != NULL && r->last_eqn->delim &&
1.230 schwarze 1850: (r->eqn == NULL || r->eqn_inline)) {
1.238 schwarze 1851: e = roff_eqndelim(r, buf, pos);
1.230 schwarze 1852: if (e == ROFF_REPARSE)
1.277 schwarze 1853: return e;
1.230 schwarze 1854: assert(e == ROFF_CONT);
1855: }
1856:
1857: /* Expand some escape sequences. */
1.94 kristaps 1858:
1.355 schwarze 1859: e = roff_expand(r, buf, ln, pos, r->escape);
1.340 schwarze 1860: if ((e & ROFF_MASK) == ROFF_IGN)
1.277 schwarze 1861: return e;
1.238 schwarze 1862: assert(e == ROFF_CONT);
1.94 kristaps 1863:
1.238 schwarze 1864: ctl = roff_getcontrol(r, buf->buf, &pos);
1.130 kristaps 1865:
1.94 kristaps 1866: /*
1.79 kristaps 1867: * First, if a scope is open and we're not a macro, pass the
1.252 schwarze 1868: * text through the macro's filter.
1869: * Equations process all content themselves.
1870: * Tables process almost all content themselves, but we want
1871: * to warn about macros before passing it there.
1.79 kristaps 1872: */
1.74 kristaps 1873:
1.252 schwarze 1874: if (r->last != NULL && ! ctl) {
1.78 kristaps 1875: t = r->last->tok;
1.238 schwarze 1876: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.340 schwarze 1877: if ((e & ROFF_MASK) == ROFF_IGN)
1.277 schwarze 1878: return e;
1.340 schwarze 1879: e &= ~ROFF_MASK;
1880: } else
1881: e = ROFF_IGN;
1.319 schwarze 1882: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1883: eqn_read(r->eqn, buf->buf + ppos);
1.340 schwarze 1884: return e;
1.319 schwarze 1885: }
1.321 schwarze 1886: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1887: tbl_read(r->tbl, ln, buf->buf, ppos);
1.346 schwarze 1888: roff_addtbl(r->man, ln, r->tbl);
1.340 schwarze 1889: return e;
1.321 schwarze 1890: }
1.367 schwarze 1891: if ( ! ctl) {
1892: r->options &= ~MPARSE_COMMENT;
1.340 schwarze 1893: return roff_parsetext(r, buf, pos, offs) | e;
1.367 schwarze 1894: }
1.228 schwarze 1895:
1896: /* Skip empty request lines. */
1897:
1.238 schwarze 1898: if (buf->buf[pos] == '"') {
1.350 schwarze 1899: mandoc_msg(MANDOCERR_COMMENT_BAD, ln, pos, NULL);
1.277 schwarze 1900: return ROFF_IGN;
1.238 schwarze 1901: } else if (buf->buf[pos] == '\0')
1.277 schwarze 1902: return ROFF_IGN;
1.67 kristaps 1903:
1.79 kristaps 1904: /*
1905: * If a scope is open, go to the child handler for that macro,
1906: * as it may want to preprocess before doing anything with it.
1.125 kristaps 1907: * Don't do so if an equation is open.
1.79 kristaps 1908: */
1.78 kristaps 1909:
1.79 kristaps 1910: if (r->last) {
1911: t = r->last->tok;
1.277 schwarze 1912: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1913: }
1.78 kristaps 1914:
1.243 schwarze 1915: /* No scope is open. This is a new request or macro. */
1916:
1.367 schwarze 1917: r->options &= ~MPARSE_COMMENT;
1.243 schwarze 1918: spos = pos;
1919: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1920:
1921: /* Tables ignore most macros. */
1922:
1.308 schwarze 1923: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.309 schwarze 1924: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.350 schwarze 1925: mandoc_msg(MANDOCERR_TBLMACRO,
1926: ln, pos, "%s", buf->buf + spos);
1.308 schwarze 1927: if (t != TOKEN_NONE)
1.277 schwarze 1928: return ROFF_IGN;
1.257 schwarze 1929: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1930: pos++;
1.291 schwarze 1931: while (buf->buf[pos] == ' ')
1.257 schwarze 1932: pos++;
1.321 schwarze 1933: tbl_read(r->tbl, ln, buf->buf, pos);
1.346 schwarze 1934: roff_addtbl(r->man, ln, r->tbl);
1.321 schwarze 1935: return ROFF_IGN;
1.243 schwarze 1936: }
1937:
1.305 schwarze 1938: /* For now, let high level macros abort .ce mode. */
1939:
1940: if (ctl && roffce_node != NULL &&
1.324 schwarze 1941: (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
1942: t == ROFF_TH || t == ROFF_TS)) {
1.305 schwarze 1943: r->man->last = roffce_node;
1944: r->man->next = ROFF_NEXT_SIBLING;
1945: roffce_lines = 0;
1946: roffce_node = NULL;
1947: }
1948:
1.79 kristaps 1949: /*
1.243 schwarze 1950: * This is neither a roff request nor a user-defined macro.
1951: * Let the standard macro set parsers handle it.
1.79 kristaps 1952: */
1.67 kristaps 1953:
1.294 schwarze 1954: if (t == TOKEN_NONE)
1.277 schwarze 1955: return ROFF_CONT;
1.243 schwarze 1956:
1957: /* Execute a roff request or a user defined macro. */
1.67 kristaps 1958:
1.296 schwarze 1959: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.74 kristaps 1960: }
1961:
1.339 schwarze 1962: /*
1963: * Internal interface function to tell the roff parser that execution
1964: * of the current macro ended. This is required because macro
1965: * definitions usually do not end with a .return request.
1966: */
1967: void
1968: roff_userret(struct roff *r)
1969: {
1970: struct mctx *ctx;
1971: int i;
1972:
1973: assert(r->mstackpos >= 0);
1974: ctx = r->mstack + r->mstackpos;
1975: for (i = 0; i < ctx->argc; i++)
1976: free(ctx->argv[i]);
1977: ctx->argc = 0;
1978: r->mstackpos--;
1979: }
1980:
1.117 kristaps 1981: void
1.74 kristaps 1982: roff_endparse(struct roff *r)
1983: {
1.321 schwarze 1984: if (r->last != NULL)
1.350 schwarze 1985: mandoc_msg(MANDOCERR_BLK_NOEND, r->last->line,
1986: r->last->col, "%s", roff_name[r->last->tok]);
1.117 kristaps 1987:
1.321 schwarze 1988: if (r->eqn != NULL) {
1.350 schwarze 1989: mandoc_msg(MANDOCERR_BLK_NOEND,
1.319 schwarze 1990: r->eqn->node->line, r->eqn->node->pos, "EQ");
1991: eqn_parse(r->eqn);
1992: r->eqn = NULL;
1.125 kristaps 1993: }
1994:
1.321 schwarze 1995: if (r->tbl != NULL) {
1.346 schwarze 1996: tbl_end(r->tbl, 1);
1.321 schwarze 1997: r->tbl = NULL;
1.117 kristaps 1998: }
1.67 kristaps 1999: }
2000:
2001: /*
2002: * Parse a roff node's type from the input buffer. This must be in the
2003: * form of ".foo xxx" in the usual way.
2004: */
1.294 schwarze 2005: static enum roff_tok
1.214 schwarze 2006: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.67 kristaps 2007: {
1.214 schwarze 2008: char *cp;
1.106 kristaps 2009: const char *mac;
2010: size_t maclen;
1.315 schwarze 2011: int deftype;
1.294 schwarze 2012: enum roff_tok t;
1.67 kristaps 2013:
1.214 schwarze 2014: cp = buf + *pos;
2015:
2016: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.294 schwarze 2017: return TOKEN_NONE;
1.67 kristaps 2018:
1.214 schwarze 2019: mac = cp;
2020: maclen = roff_getname(r, &cp, ln, ppos);
1.67 kristaps 2021:
1.315 schwarze 2022: deftype = ROFFDEF_USER | ROFFDEF_REN;
2023: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
2024: switch (deftype) {
2025: case ROFFDEF_USER:
2026: t = ROFF_USERDEF;
2027: break;
2028: case ROFFDEF_REN:
2029: t = ROFF_RENAMED;
2030: break;
2031: default:
2032: t = roffhash_find(r->reqtab, mac, maclen);
2033: break;
2034: }
1.294 schwarze 2035: if (t != TOKEN_NONE)
1.214 schwarze 2036: *pos = cp - buf;
1.325 schwarze 2037: else if (deftype == ROFFDEF_UNDEF) {
2038: /* Using an undefined macro defines it to be empty. */
2039: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
2040: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
2041: }
1.277 schwarze 2042: return t;
1.67 kristaps 2043: }
2044:
1.266 schwarze 2045: /* --- handling of request blocks ----------------------------------------- */
2046:
1.375 schwarze 2047: /*
2048: * Close a macro definition block or an "ignore" block.
2049: */
1.340 schwarze 2050: static int
1.76 kristaps 2051: roff_cblock(ROFF_ARGS)
1.67 kristaps 2052: {
1.375 schwarze 2053: int rr;
1.79 kristaps 2054:
1.238 schwarze 2055: if (r->last == NULL) {
1.350 schwarze 2056: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.277 schwarze 2057: return ROFF_IGN;
1.76 kristaps 2058: }
1.67 kristaps 2059:
1.81 kristaps 2060: switch (r->last->tok) {
1.207 schwarze 2061: case ROFF_am:
2062: case ROFF_ami:
2063: case ROFF_de:
2064: case ROFF_dei:
2065: case ROFF_ig:
1.81 kristaps 2066: break;
1.375 schwarze 2067: case ROFF_am1:
2068: case ROFF_de1:
2069: /* Remapped in roff_block(). */
2070: abort();
1.81 kristaps 2071: default:
1.350 schwarze 2072: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.277 schwarze 2073: return ROFF_IGN;
1.76 kristaps 2074: }
1.67 kristaps 2075:
1.375 schwarze 2076: roffnode_pop(r);
2077: roffnode_cleanscope(r);
2078:
2079: /*
2080: * If a conditional block with braces is still open,
2081: * check for "\}" block end markers.
2082: */
2083:
2084: if (r->last != NULL && r->last->endspan < 0) {
2085: rr = 1; /* If arguments follow "\}", warn about them. */
2086: roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
2087: }
2088:
1.238 schwarze 2089: if (buf->buf[pos] != '\0')
1.350 schwarze 2090: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.238 schwarze 2091: ".. %s", buf->buf + pos);
1.71 kristaps 2092:
1.277 schwarze 2093: return ROFF_IGN;
1.67 kristaps 2094: }
2095:
1.364 schwarze 2096: /*
2097: * Pop all nodes ending at the end of the current input line.
2098: * Return the number of loops ended.
2099: */
1.340 schwarze 2100: static int
1.76 kristaps 2101: roffnode_cleanscope(struct roff *r)
1.67 kristaps 2102: {
1.340 schwarze 2103: int inloop;
1.67 kristaps 2104:
1.340 schwarze 2105: inloop = 0;
1.375 schwarze 2106: while (r->last != NULL && r->last->endspan > 0) {
1.173 schwarze 2107: if (--r->last->endspan != 0)
1.76 kristaps 2108: break;
1.340 schwarze 2109: inloop += roffnode_pop(r);
1.76 kristaps 2110: }
1.340 schwarze 2111: return inloop;
1.67 kristaps 2112: }
2113:
1.364 schwarze 2114: /*
1.375 schwarze 2115: * Handle the closing "\}" of a conditional block.
1.364 schwarze 2116: * Apart from generating warnings, this only pops nodes.
2117: * Return the number of loops ended.
2118: */
1.340 schwarze 2119: static int
1.195 schwarze 2120: roff_ccond(struct roff *r, int ln, int ppos)
1.74 kristaps 2121: {
1.76 kristaps 2122: if (NULL == r->last) {
1.350 schwarze 2123: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 2124: return 0;
1.76 kristaps 2125: }
2126:
1.82 kristaps 2127: switch (r->last->tok) {
1.207 schwarze 2128: case ROFF_el:
2129: case ROFF_ie:
2130: case ROFF_if:
1.340 schwarze 2131: case ROFF_while:
1.82 kristaps 2132: break;
2133: default:
1.350 schwarze 2134: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 2135: return 0;
1.75 kristaps 2136: }
2137:
1.76 kristaps 2138: if (r->last->endspan > -1) {
1.350 schwarze 2139: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 2140: return 0;
1.76 kristaps 2141: }
2142:
1.340 schwarze 2143: return roffnode_pop(r) + roffnode_cleanscope(r);
1.76 kristaps 2144: }
2145:
1.340 schwarze 2146: static int
1.80 kristaps 2147: roff_block(ROFF_ARGS)
1.76 kristaps 2148: {
1.315 schwarze 2149: const char *name, *value;
2150: char *call, *cp, *iname, *rname;
2151: size_t csz, namesz, rsz;
2152: int deftype;
1.106 kristaps 2153:
1.220 schwarze 2154: /* Ignore groff compatibility mode for now. */
1.76 kristaps 2155:
1.238 schwarze 2156: if (tok == ROFF_de1)
1.220 schwarze 2157: tok = ROFF_de;
1.251 schwarze 2158: else if (tok == ROFF_dei1)
2159: tok = ROFF_dei;
1.238 schwarze 2160: else if (tok == ROFF_am1)
1.220 schwarze 2161: tok = ROFF_am;
1.251 schwarze 2162: else if (tok == ROFF_ami1)
2163: tok = ROFF_ami;
1.220 schwarze 2164:
2165: /* Parse the macro name argument. */
2166:
1.238 schwarze 2167: cp = buf->buf + pos;
2168: if (tok == ROFF_ig) {
1.220 schwarze 2169: iname = NULL;
2170: namesz = 0;
2171: } else {
2172: iname = cp;
2173: namesz = roff_getname(r, &cp, ln, ppos);
2174: iname[namesz] = '\0';
2175: }
1.107 kristaps 2176:
1.220 schwarze 2177: /* Resolve the macro name argument if it is indirect. */
1.107 kristaps 2178:
1.238 schwarze 2179: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 2180: deftype = ROFFDEF_USER;
2181: name = roff_getstrn(r, iname, namesz, &deftype);
2182: if (name == NULL) {
1.350 schwarze 2183: mandoc_msg(MANDOCERR_STR_UNDEF,
2184: ln, (int)(iname - buf->buf),
1.220 schwarze 2185: "%.*s", (int)namesz, iname);
2186: namesz = 0;
2187: } else
2188: namesz = strlen(name);
2189: } else
2190: name = iname;
1.107 kristaps 2191:
1.238 schwarze 2192: if (namesz == 0 && tok != ROFF_ig) {
1.350 schwarze 2193: mandoc_msg(MANDOCERR_REQ_EMPTY,
2194: ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2195: return ROFF_IGN;
1.220 schwarze 2196: }
1.80 kristaps 2197:
1.106 kristaps 2198: roffnode_push(r, tok, name, ln, ppos);
2199:
2200: /*
2201: * At the beginning of a `de' macro, clear the existing string
2202: * with the same name, if there is one. New content will be
1.193 schwarze 2203: * appended from roff_block_text() in multiline mode.
1.106 kristaps 2204: */
1.107 kristaps 2205:
1.311 schwarze 2206: if (tok == ROFF_de || tok == ROFF_dei) {
1.213 schwarze 2207: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.311 schwarze 2208: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.315 schwarze 2209: } else if (tok == ROFF_am || tok == ROFF_ami) {
2210: deftype = ROFFDEF_ANY;
2211: value = roff_getstrn(r, iname, namesz, &deftype);
2212: switch (deftype) { /* Before appending, ... */
2213: case ROFFDEF_PRE: /* copy predefined to user-defined. */
2214: roff_setstrn(&r->strtab, name, namesz,
2215: value, strlen(value), 0);
2216: break;
2217: case ROFFDEF_REN: /* call original standard macro. */
2218: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2219: (int)strlen(value), value);
2220: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2221: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
2222: free(call);
2223: break;
2224: case ROFFDEF_STD: /* rename and call standard macro. */
2225: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
2226: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
2227: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2228: (int)rsz, rname);
2229: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2230: free(call);
2231: free(rname);
2232: break;
2233: default:
2234: break;
2235: }
1.311 schwarze 2236: }
1.76 kristaps 2237:
1.238 schwarze 2238: if (*cp == '\0')
1.277 schwarze 2239: return ROFF_IGN;
1.78 kristaps 2240:
1.220 schwarze 2241: /* Get the custom end marker. */
1.107 kristaps 2242:
1.220 schwarze 2243: iname = cp;
1.213 schwarze 2244: namesz = roff_getname(r, &cp, ln, ppos);
1.220 schwarze 2245:
2246: /* Resolve the end marker if it is indirect. */
2247:
1.238 schwarze 2248: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 2249: deftype = ROFFDEF_USER;
2250: name = roff_getstrn(r, iname, namesz, &deftype);
2251: if (name == NULL) {
1.350 schwarze 2252: mandoc_msg(MANDOCERR_STR_UNDEF,
2253: ln, (int)(iname - buf->buf),
1.220 schwarze 2254: "%.*s", (int)namesz, iname);
2255: namesz = 0;
2256: } else
2257: namesz = strlen(name);
2258: } else
2259: name = iname;
2260:
1.213 schwarze 2261: if (namesz)
2262: r->last->end = mandoc_strndup(name, namesz);
1.78 kristaps 2263:
1.238 schwarze 2264: if (*cp != '\0')
1.350 schwarze 2265: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.295 schwarze 2266: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.74 kristaps 2267:
1.277 schwarze 2268: return ROFF_IGN;
1.78 kristaps 2269: }
2270:
1.340 schwarze 2271: static int
1.80 kristaps 2272: roff_block_sub(ROFF_ARGS)
1.79 kristaps 2273: {
1.294 schwarze 2274: enum roff_tok t;
1.79 kristaps 2275: int i, j;
2276:
2277: /*
2278: * First check whether a custom macro exists at this level. If
2279: * it does, then check against it. This is some of groff's
2280: * stranger behaviours. If we encountered a custom end-scope
2281: * tag and that tag also happens to be a "real" macro, then we
2282: * need to try interpreting it again as a real macro. If it's
2283: * not, then return ignore. Else continue.
2284: */
2285:
2286: if (r->last->end) {
1.130 kristaps 2287: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.238 schwarze 2288: if (buf->buf[i] != r->last->end[j])
1.79 kristaps 2289: break;
2290:
1.238 schwarze 2291: if (r->last->end[j] == '\0' &&
2292: (buf->buf[i] == '\0' ||
2293: buf->buf[i] == ' ' ||
2294: buf->buf[i] == '\t')) {
1.79 kristaps 2295: roffnode_pop(r);
2296: roffnode_cleanscope(r);
2297:
1.238 schwarze 2298: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.130 kristaps 2299: i++;
2300:
2301: pos = i;
1.238 schwarze 2302: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.294 schwarze 2303: TOKEN_NONE)
1.277 schwarze 2304: return ROFF_RERUN;
2305: return ROFF_IGN;
1.79 kristaps 2306: }
2307: }
2308:
2309: /*
2310: * If we have no custom end-query or lookup failed, then try
2311: * pulling it out of the hashtable.
2312: */
2313:
1.238 schwarze 2314: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.79 kristaps 2315:
1.238 schwarze 2316: if (t != ROFF_cblock) {
2317: if (tok != ROFF_ig)
2318: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.277 schwarze 2319: return ROFF_IGN;
1.106 kristaps 2320: }
1.79 kristaps 2321:
1.277 schwarze 2322: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 2323: }
2324:
1.340 schwarze 2325: static int
1.80 kristaps 2326: roff_block_text(ROFF_ARGS)
1.78 kristaps 2327: {
2328:
1.238 schwarze 2329: if (tok != ROFF_ig)
2330: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.106 kristaps 2331:
1.277 schwarze 2332: return ROFF_IGN;
1.78 kristaps 2333: }
2334:
1.375 schwarze 2335: /*
2336: * Check for a closing "\}" and handle it.
2337: * In this function, the final "int *offs" argument is used for
2338: * different purposes than elsewhere:
2339: * Input: *offs == 0: caller wants to discard arguments following \}
2340: * *offs == 1: caller wants to preserve text following \}
2341: * Output: *offs = 0: tell caller to discard input line
2342: * *offs = 1: tell caller to use input line
2343: */
1.340 schwarze 2344: static int
1.375 schwarze 2345: roff_cond_checkend(ROFF_ARGS)
1.82 kristaps 2346: {
1.340 schwarze 2347: char *ep;
2348: int endloop, irc, rr;
1.82 kristaps 2349:
1.340 schwarze 2350: irc = ROFF_IGN;
1.82 kristaps 2351: rr = r->last->rule;
1.340 schwarze 2352: endloop = tok != ROFF_while ? ROFF_IGN :
2353: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2354: if (roffnode_cleanscope(r))
2355: irc |= endloop;
1.144 kristaps 2356:
1.196 schwarze 2357: /*
1.375 schwarze 2358: * If "\}" occurs on a macro line without a preceding macro or
2359: * a text line contains nothing else, drop the line completely.
1.196 schwarze 2360: */
2361:
1.238 schwarze 2362: ep = buf->buf + pos;
1.375 schwarze 2363: if (ep[0] == '\\' && ep[1] == '}' && (ep[2] == '\0' || *offs == 0))
1.198 schwarze 2364: rr = 0;
1.196 schwarze 2365:
1.343 schwarze 2366: /*
1.375 schwarze 2367: * The closing delimiter "\}" rewinds the conditional scope
1.343 schwarze 2368: * but is otherwise ignored when interpreting the line.
2369: */
1.144 kristaps 2370:
1.238 schwarze 2371: while ((ep = strchr(ep, '\\')) != NULL) {
1.318 schwarze 2372: switch (ep[1]) {
2373: case '}':
1.376 schwarze 2374: if (ep[2] == '\0')
2375: ep[0] = '\0';
2376: else if (rr)
1.375 schwarze 2377: ep[1] = '&';
2378: else
2379: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1.340 schwarze 2380: if (roff_ccond(r, ln, ep - buf->buf))
2381: irc |= endloop;
1.318 schwarze 2382: break;
2383: case '\0':
2384: ++ep;
2385: break;
2386: default:
2387: ep += 2;
2388: break;
1.197 schwarze 2389: }
1.177 schwarze 2390: }
1.375 schwarze 2391: *offs = rr;
2392: return irc;
2393: }
1.318 schwarze 2394:
1.375 schwarze 2395: /*
2396: * Parse and process a request or macro line in conditional scope.
2397: */
2398: static int
2399: roff_cond_sub(ROFF_ARGS)
2400: {
2401: struct roffnode *bl;
2402: int irc, rr;
2403: enum roff_tok t;
2404:
2405: rr = 0; /* If arguments follow "\}", skip them. */
2406: irc = roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
1.368 schwarze 2407: t = roff_parse(r, buf->buf, &pos, ln, ppos);
2408:
2409: /* For now, let high level macros abort .ce mode. */
2410:
2411: if (roffce_node != NULL &&
2412: (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
2413: t == ROFF_TH || t == ROFF_TS)) {
2414: r->man->last = roffce_node;
2415: r->man->next = ROFF_NEXT_SIBLING;
2416: roffce_lines = 0;
2417: roffce_node = NULL;
2418: }
2419:
1.318 schwarze 2420: /*
2421: * Fully handle known macros when they are structurally
2422: * required or when the conditional evaluated to true.
2423: */
2424:
1.364 schwarze 2425: if (t == ROFF_break) {
2426: if (irc & ROFF_LOOPMASK)
2427: irc = ROFF_IGN | ROFF_LOOPEXIT;
2428: else if (rr) {
2429: for (bl = r->last; bl != NULL; bl = bl->parent) {
2430: bl->rule = 0;
2431: if (bl->tok == ROFF_while)
2432: break;
2433: }
2434: }
2435: } else if (t != TOKEN_NONE &&
1.383 ! schwarze 2436: (rr || roffs[t].flags & ROFFMAC_STRUCT)) {
1.364 schwarze 2437: irc |= (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.383 ! schwarze 2438: if (irc & ROFF_WHILE)
! 2439: irc &= ~(ROFF_LOOPCONT | ROFF_LOOPEXIT);
! 2440: } else
1.364 schwarze 2441: irc |= rr ? ROFF_CONT : ROFF_IGN;
1.340 schwarze 2442: return irc;
1.82 kristaps 2443: }
2444:
1.375 schwarze 2445: /*
2446: * Parse and process a text line in conditional scope.
2447: */
1.340 schwarze 2448: static int
1.82 kristaps 2449: roff_cond_text(ROFF_ARGS)
1.78 kristaps 2450: {
1.375 schwarze 2451: int irc, rr;
1.343 schwarze 2452:
1.375 schwarze 2453: rr = 1; /* If arguments follow "\}", preserve them. */
2454: irc = roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
1.340 schwarze 2455: if (rr)
2456: irc |= ROFF_CONT;
2457: return irc;
1.74 kristaps 2458: }
2459:
1.266 schwarze 2460: /* --- handling of numeric and conditional expressions -------------------- */
2461:
1.204 schwarze 2462: /*
2463: * Parse a single signed integer number. Stop at the first non-digit.
2464: * If there is at least one digit, return success and advance the
2465: * parse point, else return failure and let the parse point unchanged.
2466: * Ignore overflows, treat them just like the C language.
2467: */
1.184 schwarze 2468: static int
1.261 schwarze 2469: roff_getnum(const char *v, int *pos, int *res, int flags)
1.184 schwarze 2470: {
1.261 schwarze 2471: int myres, scaled, n, p;
1.206 schwarze 2472:
2473: if (NULL == res)
2474: res = &myres;
1.184 schwarze 2475:
2476: p = *pos;
2477: n = v[p] == '-';
1.261 schwarze 2478: if (n || v[p] == '+')
1.184 schwarze 2479: p++;
2480:
1.261 schwarze 2481: if (flags & ROFFNUM_WHITE)
2482: while (isspace((unsigned char)v[p]))
2483: p++;
2484:
1.184 schwarze 2485: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.204 schwarze 2486: *res = 10 * *res + v[p] - '0';
1.184 schwarze 2487: if (p == *pos + n)
2488: return 0;
2489:
2490: if (n)
2491: *res = -*res;
2492:
1.254 schwarze 2493: /* Each number may be followed by one optional scaling unit. */
2494:
2495: switch (v[p]) {
2496: case 'f':
1.261 schwarze 2497: scaled = *res * 65536;
1.254 schwarze 2498: break;
2499: case 'i':
1.261 schwarze 2500: scaled = *res * 240;
1.254 schwarze 2501: break;
2502: case 'c':
1.261 schwarze 2503: scaled = *res * 240 / 2.54;
1.254 schwarze 2504: break;
2505: case 'v':
2506: case 'P':
1.261 schwarze 2507: scaled = *res * 40;
1.254 schwarze 2508: break;
2509: case 'm':
2510: case 'n':
1.261 schwarze 2511: scaled = *res * 24;
1.254 schwarze 2512: break;
2513: case 'p':
1.261 schwarze 2514: scaled = *res * 10 / 3;
1.254 schwarze 2515: break;
2516: case 'u':
1.261 schwarze 2517: scaled = *res;
1.254 schwarze 2518: break;
2519: case 'M':
1.261 schwarze 2520: scaled = *res * 6 / 25;
1.254 schwarze 2521: break;
2522: default:
1.261 schwarze 2523: scaled = *res;
1.254 schwarze 2524: p--;
2525: break;
2526: }
1.261 schwarze 2527: if (flags & ROFFNUM_SCALE)
2528: *res = scaled;
1.254 schwarze 2529:
2530: *pos = p + 1;
1.277 schwarze 2531: return 1;
1.184 schwarze 2532: }
2533:
1.198 schwarze 2534: /*
2535: * Evaluate a string comparison condition.
2536: * The first character is the delimiter.
2537: * Succeed if the string up to its second occurrence
2538: * matches the string up to its third occurence.
2539: * Advance the cursor after the third occurrence
2540: * or lacking that, to the end of the line.
2541: */
2542: static int
2543: roff_evalstrcond(const char *v, int *pos)
2544: {
2545: const char *s1, *s2, *s3;
2546: int match;
2547:
2548: match = 0;
2549: s1 = v + *pos; /* initial delimiter */
2550: s2 = s1 + 1; /* for scanning the first string */
2551: s3 = strchr(s2, *s1); /* for scanning the second string */
2552:
2553: if (NULL == s3) /* found no middle delimiter */
2554: goto out;
2555:
2556: while ('\0' != *++s3) {
2557: if (*s2 != *s3) { /* mismatch */
2558: s3 = strchr(s3, *s1);
2559: break;
2560: }
2561: if (*s3 == *s1) { /* found the final delimiter */
2562: match = 1;
2563: break;
2564: }
2565: s2++;
2566: }
2567:
2568: out:
2569: if (NULL == s3)
2570: s3 = strchr(s2, '\0');
1.242 schwarze 2571: else if (*s3 != '\0')
1.198 schwarze 2572: s3++;
2573: *pos = s3 - v;
1.277 schwarze 2574: return match;
1.198 schwarze 2575: }
2576:
1.204 schwarze 2577: /*
2578: * Evaluate an optionally negated single character, numerical,
2579: * or string condition.
2580: */
1.198 schwarze 2581: static int
1.271 schwarze 2582: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.88 kristaps 2583: {
1.336 schwarze 2584: const char *start, *end;
2585: char *cp, *name;
2586: size_t sz;
2587: int deftype, len, number, savepos, istrue, wanttrue;
1.88 kristaps 2588:
1.198 schwarze 2589: if ('!' == v[*pos]) {
2590: wanttrue = 0;
2591: (*pos)++;
2592: } else
2593: wanttrue = 1;
2594:
1.88 kristaps 2595: switch (v[*pos]) {
1.240 schwarze 2596: case '\0':
1.277 schwarze 2597: return 0;
1.207 schwarze 2598: case 'n':
2599: case 'o':
1.88 kristaps 2600: (*pos)++;
1.277 schwarze 2601: return wanttrue;
1.207 schwarze 2602: case 'e':
2603: case 't':
1.239 schwarze 2604: case 'v':
1.88 kristaps 2605: (*pos)++;
1.277 schwarze 2606: return !wanttrue;
1.336 schwarze 2607: case 'c':
2608: do {
2609: (*pos)++;
2610: } while (v[*pos] == ' ');
2611:
2612: /*
2613: * Quirk for groff compatibility:
2614: * The horizontal tab is neither available nor unavailable.
2615: */
2616:
2617: if (v[*pos] == '\t') {
2618: (*pos)++;
2619: return 0;
2620: }
2621:
2622: /* Printable ASCII characters are available. */
2623:
2624: if (v[*pos] != '\\') {
2625: (*pos)++;
2626: return wanttrue;
2627: }
2628:
2629: end = v + ++*pos;
2630: switch (mandoc_escape(&end, &start, &len)) {
2631: case ESCAPE_SPECIAL:
2632: istrue = mchars_spec2cp(start, len) != -1;
2633: break;
2634: case ESCAPE_UNICODE:
2635: istrue = 1;
2636: break;
2637: case ESCAPE_NUMBERED:
2638: istrue = mchars_num2char(start, len) != -1;
2639: break;
2640: default:
2641: istrue = !wanttrue;
2642: break;
2643: }
2644: *pos = end - v;
2645: return istrue == wanttrue;
1.310 schwarze 2646: case 'd':
1.271 schwarze 2647: case 'r':
1.310 schwarze 2648: cp = v + *pos + 1;
2649: while (*cp == ' ')
2650: cp++;
2651: name = cp;
2652: sz = roff_getname(r, &cp, ln, cp - v);
1.315 schwarze 2653: if (sz == 0)
2654: istrue = 0;
2655: else if (v[*pos] == 'r')
2656: istrue = roff_hasregn(r, name, sz);
2657: else {
2658: deftype = ROFFDEF_ANY;
2659: roff_getstrn(r, name, sz, &deftype);
2660: istrue = !!deftype;
2661: }
1.363 schwarze 2662: *pos = (name + sz) - v;
1.310 schwarze 2663: return istrue == wanttrue;
1.88 kristaps 2664: default:
2665: break;
2666: }
2667:
1.241 schwarze 2668: savepos = *pos;
1.261 schwarze 2669: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.277 schwarze 2670: return (number > 0) == wanttrue;
1.241 schwarze 2671: else if (*pos == savepos)
1.277 schwarze 2672: return roff_evalstrcond(v, pos) == wanttrue;
1.204 schwarze 2673: else
1.277 schwarze 2674: return 0;
1.88 kristaps 2675: }
2676:
1.340 schwarze 2677: static int
1.103 kristaps 2678: roff_line_ignore(ROFF_ARGS)
1.89 kristaps 2679: {
1.123 schwarze 2680:
1.277 schwarze 2681: return ROFF_IGN;
1.89 kristaps 2682: }
2683:
1.340 schwarze 2684: static int
1.251 schwarze 2685: roff_insec(ROFF_ARGS)
2686: {
2687:
1.350 schwarze 2688: mandoc_msg(MANDOCERR_REQ_INSEC, ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2689: return ROFF_IGN;
1.251 schwarze 2690: }
2691:
1.340 schwarze 2692: static int
1.251 schwarze 2693: roff_unsupp(ROFF_ARGS)
2694: {
2695:
1.350 schwarze 2696: mandoc_msg(MANDOCERR_REQ_UNSUPP, ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2697: return ROFF_IGN;
1.251 schwarze 2698: }
2699:
1.340 schwarze 2700: static int
1.82 kristaps 2701: roff_cond(ROFF_ARGS)
1.74 kristaps 2702: {
1.340 schwarze 2703: int irc;
1.173 schwarze 2704:
2705: roffnode_push(r, tok, NULL, ln, ppos);
1.74 kristaps 2706:
1.207 schwarze 2707: /*
1.134 kristaps 2708: * An `.el' has no conditional body: it will consume the value
2709: * of the current rstack entry set in prior `ie' calls or
1.207 schwarze 2710: * defaults to DENY.
1.134 kristaps 2711: *
2712: * If we're not an `el', however, then evaluate the conditional.
2713: */
1.133 kristaps 2714:
1.238 schwarze 2715: r->last->rule = tok == ROFF_el ?
1.207 schwarze 2716: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.238 schwarze 2717: roff_evalcond(r, ln, buf->buf, &pos);
1.77 kristaps 2718:
1.134 kristaps 2719: /*
2720: * An if-else will put the NEGATION of the current evaluated
2721: * conditional into the stack of rules.
2722: */
2723:
1.238 schwarze 2724: if (tok == ROFF_ie) {
1.223 schwarze 2725: if (r->rstackpos + 1 == r->rstacksz) {
2726: r->rstacksz += 16;
2727: r->rstack = mandoc_reallocarray(r->rstack,
2728: r->rstacksz, sizeof(int));
1.134 kristaps 2729: }
1.198 schwarze 2730: r->rstack[++r->rstackpos] = !r->last->rule;
1.82 kristaps 2731: }
1.88 kristaps 2732:
2733: /* If the parent has false as its rule, then so do we. */
2734:
1.198 schwarze 2735: if (r->last->parent && !r->last->parent->rule)
2736: r->last->rule = 0;
1.88 kristaps 2737:
2738: /*
1.173 schwarze 2739: * Determine scope.
2740: * If there is nothing on the line after the conditional,
2741: * not even whitespace, use next-line scope.
1.340 schwarze 2742: * Except that .while does not support next-line scope.
1.88 kristaps 2743: */
1.74 kristaps 2744:
1.340 schwarze 2745: if (buf->buf[pos] == '\0' && tok != ROFF_while) {
1.173 schwarze 2746: r->last->endspan = 2;
2747: goto out;
2748: }
2749:
1.238 schwarze 2750: while (buf->buf[pos] == ' ')
1.173 schwarze 2751: pos++;
2752:
2753: /* An opening brace requests multiline scope. */
1.75 kristaps 2754:
1.238 schwarze 2755: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.75 kristaps 2756: r->last->endspan = -1;
2757: pos += 2;
1.272 schwarze 2758: while (buf->buf[pos] == ' ')
2759: pos++;
1.173 schwarze 2760: goto out;
1.207 schwarze 2761: }
1.74 kristaps 2762:
1.77 kristaps 2763: /*
1.173 schwarze 2764: * Anything else following the conditional causes
2765: * single-line scope. Warn if the scope contains
2766: * nothing but trailing whitespace.
1.77 kristaps 2767: */
2768:
1.238 schwarze 2769: if (buf->buf[pos] == '\0')
1.350 schwarze 2770: mandoc_msg(MANDOCERR_COND_EMPTY,
2771: ln, ppos, "%s", roff_name[tok]);
1.77 kristaps 2772:
1.173 schwarze 2773: r->last->endspan = 1;
1.74 kristaps 2774:
1.173 schwarze 2775: out:
1.75 kristaps 2776: *offs = pos;
1.340 schwarze 2777: irc = ROFF_RERUN;
2778: if (tok == ROFF_while)
2779: irc |= ROFF_WHILE;
2780: return irc;
1.83 schwarze 2781: }
2782:
1.340 schwarze 2783: static int
1.92 schwarze 2784: roff_ds(ROFF_ARGS)
2785: {
1.212 schwarze 2786: char *string;
2787: const char *name;
2788: size_t namesz;
1.96 kristaps 2789:
1.251 schwarze 2790: /* Ignore groff compatibility mode for now. */
2791:
2792: if (tok == ROFF_ds1)
2793: tok = ROFF_ds;
2794: else if (tok == ROFF_as1)
2795: tok = ROFF_as;
2796:
1.96 kristaps 2797: /*
1.212 schwarze 2798: * The first word is the name of the string.
2799: * If it is empty or terminated by an escape sequence,
2800: * abort the `ds' request without defining anything.
1.96 kristaps 2801: */
1.92 schwarze 2802:
1.238 schwarze 2803: name = string = buf->buf + pos;
2804: if (*name == '\0')
1.277 schwarze 2805: return ROFF_IGN;
1.92 schwarze 2806:
1.212 schwarze 2807: namesz = roff_getname(r, &string, ln, pos);
1.363 schwarze 2808: switch (name[namesz]) {
2809: case '\\':
1.277 schwarze 2810: return ROFF_IGN;
1.363 schwarze 2811: case '\t':
2812: string = buf->buf + pos + namesz;
2813: break;
2814: default:
2815: break;
2816: }
1.212 schwarze 2817:
2818: /* Read past the initial double-quote, if any. */
1.238 schwarze 2819: if (*string == '"')
1.92 schwarze 2820: string++;
2821:
1.96 kristaps 2822: /* The rest is the value. */
1.212 schwarze 2823: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2824: ROFF_as == tok);
1.311 schwarze 2825: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.277 schwarze 2826: return ROFF_IGN;
1.92 schwarze 2827: }
2828:
1.204 schwarze 2829: /*
2830: * Parse a single operator, one or two characters long.
2831: * If the operator is recognized, return success and advance the
2832: * parse point, else return failure and let the parse point unchanged.
2833: */
2834: static int
2835: roff_getop(const char *v, int *pos, char *res)
2836: {
2837:
2838: *res = v[*pos];
2839:
2840: switch (*res) {
1.207 schwarze 2841: case '+':
2842: case '-':
2843: case '*':
2844: case '/':
2845: case '%':
2846: case '&':
2847: case ':':
1.204 schwarze 2848: break;
2849: case '<':
2850: switch (v[*pos + 1]) {
1.207 schwarze 2851: case '=':
1.204 schwarze 2852: *res = 'l';
2853: (*pos)++;
2854: break;
1.207 schwarze 2855: case '>':
1.204 schwarze 2856: *res = '!';
2857: (*pos)++;
2858: break;
1.207 schwarze 2859: case '?':
1.204 schwarze 2860: *res = 'i';
2861: (*pos)++;
2862: break;
2863: default:
2864: break;
2865: }
2866: break;
2867: case '>':
2868: switch (v[*pos + 1]) {
1.207 schwarze 2869: case '=':
1.204 schwarze 2870: *res = 'g';
2871: (*pos)++;
2872: break;
1.207 schwarze 2873: case '?':
1.204 schwarze 2874: *res = 'a';
2875: (*pos)++;
2876: break;
2877: default:
2878: break;
2879: }
2880: break;
2881: case '=':
2882: if ('=' == v[*pos + 1])
2883: (*pos)++;
2884: break;
2885: default:
1.277 schwarze 2886: return 0;
1.204 schwarze 2887: }
2888: (*pos)++;
2889:
1.277 schwarze 2890: return *res;
1.204 schwarze 2891: }
2892:
2893: /*
2894: * Evaluate either a parenthesized numeric expression
2895: * or a single signed integer number.
2896: */
2897: static int
1.235 schwarze 2898: roff_evalpar(struct roff *r, int ln,
1.261 schwarze 2899: const char *v, int *pos, int *res, int flags)
1.204 schwarze 2900: {
2901:
2902: if ('(' != v[*pos])
1.277 schwarze 2903: return roff_getnum(v, pos, res, flags);
1.204 schwarze 2904:
2905: (*pos)++;
1.261 schwarze 2906: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.277 schwarze 2907: return 0;
1.204 schwarze 2908:
1.206 schwarze 2909: /*
2910: * Omission of the closing parenthesis
2911: * is an error in validation mode,
2912: * but ignored in evaluation mode.
2913: */
2914:
1.204 schwarze 2915: if (')' == v[*pos])
2916: (*pos)++;
1.206 schwarze 2917: else if (NULL == res)
1.277 schwarze 2918: return 0;
1.204 schwarze 2919:
1.277 schwarze 2920: return 1;
1.204 schwarze 2921: }
2922:
2923: /*
2924: * Evaluate a complete numeric expression.
2925: * Proceed left to right, there is no concept of precedence.
2926: */
2927: static int
1.235 schwarze 2928: roff_evalnum(struct roff *r, int ln, const char *v,
1.261 schwarze 2929: int *pos, int *res, int flags)
1.204 schwarze 2930: {
2931: int mypos, operand2;
2932: char operator;
2933:
2934: if (NULL == pos) {
2935: mypos = 0;
2936: pos = &mypos;
2937: }
2938:
1.261 schwarze 2939: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2940: while (isspace((unsigned char)v[*pos]))
2941: (*pos)++;
2942:
1.261 schwarze 2943: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.277 schwarze 2944: return 0;
1.204 schwarze 2945:
2946: while (1) {
1.261 schwarze 2947: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2948: while (isspace((unsigned char)v[*pos]))
2949: (*pos)++;
2950:
2951: if ( ! roff_getop(v, pos, &operator))
2952: break;
2953:
1.261 schwarze 2954: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2955: while (isspace((unsigned char)v[*pos]))
2956: (*pos)++;
2957:
1.261 schwarze 2958: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.277 schwarze 2959: return 0;
1.204 schwarze 2960:
1.261 schwarze 2961: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2962: while (isspace((unsigned char)v[*pos]))
2963: (*pos)++;
1.206 schwarze 2964:
2965: if (NULL == res)
2966: continue;
1.204 schwarze 2967:
2968: switch (operator) {
1.207 schwarze 2969: case '+':
1.204 schwarze 2970: *res += operand2;
2971: break;
1.207 schwarze 2972: case '-':
1.204 schwarze 2973: *res -= operand2;
2974: break;
1.207 schwarze 2975: case '*':
1.204 schwarze 2976: *res *= operand2;
2977: break;
1.207 schwarze 2978: case '/':
1.244 schwarze 2979: if (operand2 == 0) {
1.235 schwarze 2980: mandoc_msg(MANDOCERR_DIVZERO,
1.350 schwarze 2981: ln, *pos, "%s", v);
1.234 kristaps 2982: *res = 0;
2983: break;
2984: }
1.204 schwarze 2985: *res /= operand2;
2986: break;
1.207 schwarze 2987: case '%':
1.244 schwarze 2988: if (operand2 == 0) {
2989: mandoc_msg(MANDOCERR_DIVZERO,
1.350 schwarze 2990: ln, *pos, "%s", v);
1.244 schwarze 2991: *res = 0;
2992: break;
2993: }
1.204 schwarze 2994: *res %= operand2;
2995: break;
1.207 schwarze 2996: case '<':
1.204 schwarze 2997: *res = *res < operand2;
2998: break;
1.207 schwarze 2999: case '>':
1.204 schwarze 3000: *res = *res > operand2;
3001: break;
1.207 schwarze 3002: case 'l':
1.204 schwarze 3003: *res = *res <= operand2;
3004: break;
1.207 schwarze 3005: case 'g':
1.204 schwarze 3006: *res = *res >= operand2;
3007: break;
1.207 schwarze 3008: case '=':
1.204 schwarze 3009: *res = *res == operand2;
3010: break;
1.207 schwarze 3011: case '!':
1.204 schwarze 3012: *res = *res != operand2;
3013: break;
1.207 schwarze 3014: case '&':
1.204 schwarze 3015: *res = *res && operand2;
3016: break;
1.207 schwarze 3017: case ':':
1.204 schwarze 3018: *res = *res || operand2;
3019: break;
1.207 schwarze 3020: case 'i':
1.204 schwarze 3021: if (operand2 < *res)
3022: *res = operand2;
3023: break;
1.207 schwarze 3024: case 'a':
1.204 schwarze 3025: if (operand2 > *res)
3026: *res = operand2;
3027: break;
3028: default:
3029: abort();
3030: }
3031: }
1.277 schwarze 3032: return 1;
1.204 schwarze 3033: }
3034:
1.266 schwarze 3035: /* --- register management ------------------------------------------------ */
3036:
1.180 schwarze 3037: void
1.187 schwarze 3038: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.147 kristaps 3039: {
1.327 schwarze 3040: roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
1.326 schwarze 3041: }
3042:
3043: static void
3044: roff_setregn(struct roff *r, const char *name, size_t len,
1.327 schwarze 3045: int val, char sign, int step)
1.326 schwarze 3046: {
1.180 schwarze 3047: struct roffreg *reg;
3048:
3049: /* Search for an existing register with the same name. */
3050: reg = r->regtab;
3051:
1.326 schwarze 3052: while (reg != NULL && (reg->key.sz != len ||
3053: strncmp(reg->key.p, name, len) != 0))
1.180 schwarze 3054: reg = reg->next;
1.147 kristaps 3055:
1.180 schwarze 3056: if (NULL == reg) {
3057: /* Create a new register. */
3058: reg = mandoc_malloc(sizeof(struct roffreg));
1.326 schwarze 3059: reg->key.p = mandoc_strndup(name, len);
3060: reg->key.sz = len;
1.187 schwarze 3061: reg->val = 0;
1.327 schwarze 3062: reg->step = 0;
1.180 schwarze 3063: reg->next = r->regtab;
3064: r->regtab = reg;
3065: }
3066:
1.187 schwarze 3067: if ('+' == sign)
3068: reg->val += val;
3069: else if ('-' == sign)
3070: reg->val -= val;
3071: else
3072: reg->val = val;
1.327 schwarze 3073: if (step != INT_MIN)
3074: reg->step = step;
1.147 kristaps 3075: }
3076:
1.192 schwarze 3077: /*
3078: * Handle some predefined read-only number registers.
3079: * For now, return -1 if the requested register is not predefined;
3080: * in case a predefined read-only register having the value -1
3081: * were to turn up, another special value would have to be chosen.
3082: */
3083: static int
1.273 schwarze 3084: roff_getregro(const struct roff *r, const char *name)
1.192 schwarze 3085: {
3086:
3087: switch (*name) {
1.273 schwarze 3088: case '$': /* Number of arguments of the last macro evaluated. */
1.339 schwarze 3089: return r->mstackpos < 0 ? 0 : r->mstack[r->mstackpos].argc;
1.207 schwarze 3090: case 'A': /* ASCII approximation mode is always off. */
1.277 schwarze 3091: return 0;
1.207 schwarze 3092: case 'g': /* Groff compatibility mode is always on. */
1.277 schwarze 3093: return 1;
1.207 schwarze 3094: case 'H': /* Fixed horizontal resolution. */
1.277 schwarze 3095: return 24;
1.207 schwarze 3096: case 'j': /* Always adjust left margin only. */
1.277 schwarze 3097: return 0;
1.207 schwarze 3098: case 'T': /* Some output device is always defined. */
1.277 schwarze 3099: return 1;
1.207 schwarze 3100: case 'V': /* Fixed vertical resolution. */
1.277 schwarze 3101: return 40;
1.192 schwarze 3102: default:
1.277 schwarze 3103: return -1;
1.192 schwarze 3104: }
3105: }
3106:
1.181 schwarze 3107: int
1.326 schwarze 3108: roff_getreg(struct roff *r, const char *name)
1.147 kristaps 3109: {
1.327 schwarze 3110: return roff_getregn(r, name, strlen(name), '\0');
1.181 schwarze 3111: }
3112:
3113: static int
1.327 schwarze 3114: roff_getregn(struct roff *r, const char *name, size_t len, char sign)
1.181 schwarze 3115: {
3116: struct roffreg *reg;
1.192 schwarze 3117: int val;
3118:
3119: if ('.' == name[0] && 2 == len) {
1.273 schwarze 3120: val = roff_getregro(r, name + 1);
1.192 schwarze 3121: if (-1 != val)
1.277 schwarze 3122: return val;
1.192 schwarze 3123: }
1.181 schwarze 3124:
1.327 schwarze 3125: for (reg = r->regtab; reg; reg = reg->next) {
1.181 schwarze 3126: if (len == reg->key.sz &&
1.327 schwarze 3127: 0 == strncmp(name, reg->key.p, len)) {
3128: switch (sign) {
3129: case '+':
3130: reg->val += reg->step;
3131: break;
3132: case '-':
3133: reg->val -= reg->step;
3134: break;
3135: default:
3136: break;
3137: }
1.277 schwarze 3138: return reg->val;
1.327 schwarze 3139: }
3140: }
1.271 schwarze 3141:
1.327 schwarze 3142: roff_setregn(r, name, len, 0, '\0', INT_MIN);
1.277 schwarze 3143: return 0;
1.271 schwarze 3144: }
3145:
3146: static int
3147: roff_hasregn(const struct roff *r, const char *name, size_t len)
3148: {
3149: struct roffreg *reg;
3150: int val;
3151:
3152: if ('.' == name[0] && 2 == len) {
1.273 schwarze 3153: val = roff_getregro(r, name + 1);
1.271 schwarze 3154: if (-1 != val)
1.277 schwarze 3155: return 1;
1.271 schwarze 3156: }
3157:
3158: for (reg = r->regtab; reg; reg = reg->next)
3159: if (len == reg->key.sz &&
3160: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 3161: return 1;
1.147 kristaps 3162:
1.277 schwarze 3163: return 0;
1.147 kristaps 3164: }
3165:
1.180 schwarze 3166: static void
3167: roff_freereg(struct roffreg *reg)
1.147 kristaps 3168: {
1.180 schwarze 3169: struct roffreg *old_reg;
1.147 kristaps 3170:
1.180 schwarze 3171: while (NULL != reg) {
3172: free(reg->key.p);
3173: old_reg = reg;
3174: reg = reg->next;
3175: free(old_reg);
3176: }
1.147 kristaps 3177: }
1.92 schwarze 3178:
1.340 schwarze 3179: static int
1.89 kristaps 3180: roff_nr(ROFF_ARGS)
1.83 schwarze 3181: {
1.327 schwarze 3182: char *key, *val, *step;
1.212 schwarze 3183: size_t keysz;
1.327 schwarze 3184: int iv, is, len;
1.187 schwarze 3185: char sign;
1.89 kristaps 3186:
1.238 schwarze 3187: key = val = buf->buf + pos;
3188: if (*key == '\0')
1.277 schwarze 3189: return ROFF_IGN;
1.212 schwarze 3190:
3191: keysz = roff_getname(r, &val, ln, pos);
1.363 schwarze 3192: if (key[keysz] == '\\' || key[keysz] == '\t')
1.277 schwarze 3193: return ROFF_IGN;
1.89 kristaps 3194:
1.187 schwarze 3195: sign = *val;
1.238 schwarze 3196: if (sign == '+' || sign == '-')
1.187 schwarze 3197: val++;
3198:
1.327 schwarze 3199: len = 0;
3200: if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
3201: return ROFF_IGN;
3202:
3203: step = val + len;
3204: while (isspace((unsigned char)*step))
3205: step++;
3206: if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)
3207: is = INT_MIN;
1.109 kristaps 3208:
1.327 schwarze 3209: roff_setregn(r, key, keysz, iv, sign, is);
1.277 schwarze 3210: return ROFF_IGN;
1.203 schwarze 3211: }
3212:
1.340 schwarze 3213: static int
1.203 schwarze 3214: roff_rr(ROFF_ARGS)
3215: {
3216: struct roffreg *reg, **prev;
1.212 schwarze 3217: char *name, *cp;
3218: size_t namesz;
1.203 schwarze 3219:
1.238 schwarze 3220: name = cp = buf->buf + pos;
3221: if (*name == '\0')
1.277 schwarze 3222: return ROFF_IGN;
1.212 schwarze 3223: namesz = roff_getname(r, &cp, ln, pos);
3224: name[namesz] = '\0';
1.203 schwarze 3225:
3226: prev = &r->regtab;
3227: while (1) {
3228: reg = *prev;
1.238 schwarze 3229: if (reg == NULL || !strcmp(name, reg->key.p))
1.203 schwarze 3230: break;
3231: prev = ®->next;
3232: }
1.238 schwarze 3233: if (reg != NULL) {
1.203 schwarze 3234: *prev = reg->next;
3235: free(reg->key.p);
3236: free(reg);
3237: }
1.277 schwarze 3238: return ROFF_IGN;
1.122 schwarze 3239: }
3240:
1.266 schwarze 3241: /* --- handler functions for roff requests -------------------------------- */
3242:
1.340 schwarze 3243: static int
1.122 schwarze 3244: roff_rm(ROFF_ARGS)
3245: {
3246: const char *name;
3247: char *cp;
1.212 schwarze 3248: size_t namesz;
1.122 schwarze 3249:
1.238 schwarze 3250: cp = buf->buf + pos;
3251: while (*cp != '\0') {
1.212 schwarze 3252: name = cp;
1.238 schwarze 3253: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.212 schwarze 3254: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.311 schwarze 3255: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.363 schwarze 3256: if (name[namesz] == '\\' || name[namesz] == '\t')
1.212 schwarze 3257: break;
1.122 schwarze 3258: }
1.277 schwarze 3259: return ROFF_IGN;
1.178 schwarze 3260: }
3261:
1.340 schwarze 3262: static int
1.178 schwarze 3263: roff_it(ROFF_ARGS)
3264: {
3265: int iv;
3266:
3267: /* Parse the number of lines. */
1.261 schwarze 3268:
3269: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.350 schwarze 3270: mandoc_msg(MANDOCERR_IT_NONUM,
3271: ln, ppos, "%s", buf->buf + 1);
1.277 schwarze 3272: return ROFF_IGN;
1.178 schwarze 3273: }
3274:
1.262 schwarze 3275: while (isspace((unsigned char)buf->buf[pos]))
3276: pos++;
3277:
3278: /*
3279: * Arm the input line trap.
3280: * Special-casing "an-trap" is an ugly workaround to cope
3281: * with DocBook stupidly fiddling with man(7) internals.
3282: */
1.261 schwarze 3283:
1.178 schwarze 3284: roffit_lines = iv;
1.262 schwarze 3285: roffit_macro = mandoc_strdup(iv != 1 ||
3286: strcmp(buf->buf + pos, "an-trap") ?
3287: buf->buf + pos : "br");
1.277 schwarze 3288: return ROFF_IGN;
1.175 schwarze 3289: }
3290:
1.340 schwarze 3291: static int
1.175 schwarze 3292: roff_Dd(ROFF_ARGS)
3293: {
1.315 schwarze 3294: int mask;
3295: enum roff_tok t, te;
1.227 schwarze 3296:
1.315 schwarze 3297: switch (tok) {
3298: case ROFF_Dd:
3299: tok = MDOC_Dd;
3300: te = MDOC_MAX;
3301: if (r->format == 0)
3302: r->format = MPARSE_MDOC;
3303: mask = MPARSE_MDOC | MPARSE_QUICK;
3304: break;
3305: case ROFF_TH:
3306: tok = MAN_TH;
3307: te = MAN_MAX;
3308: if (r->format == 0)
3309: r->format = MPARSE_MAN;
3310: mask = MPARSE_QUICK;
3311: break;
3312: default:
3313: abort();
3314: }
3315: if ((r->options & mask) == 0)
3316: for (t = tok; t < te; t++)
3317: roff_setstr(r, roff_name[t], NULL, 0);
1.277 schwarze 3318: return ROFF_CONT;
1.109 kristaps 3319: }
3320:
1.340 schwarze 3321: static int
1.109 kristaps 3322: roff_TE(ROFF_ARGS)
3323: {
1.361 schwarze 3324: r->man->flags &= ~ROFF_NONOFILL;
1.321 schwarze 3325: if (r->tbl == NULL) {
1.350 schwarze 3326: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "TE");
1.321 schwarze 3327: return ROFF_IGN;
3328: }
1.346 schwarze 3329: if (tbl_end(r->tbl, 0) == 0) {
1.321 schwarze 3330: r->tbl = NULL;
1.258 schwarze 3331: free(buf->buf);
3332: buf->buf = mandoc_strdup(".sp");
3333: buf->sz = 4;
1.329 schwarze 3334: *offs = 0;
1.277 schwarze 3335: return ROFF_REPARSE;
1.258 schwarze 3336: }
1.321 schwarze 3337: r->tbl = NULL;
1.277 schwarze 3338: return ROFF_IGN;
1.112 kristaps 3339: }
3340:
1.340 schwarze 3341: static int
1.112 kristaps 3342: roff_T_(ROFF_ARGS)
3343: {
3344:
3345: if (NULL == r->tbl)
1.350 schwarze 3346: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "T&");
1.112 kristaps 3347: else
1.296 schwarze 3348: tbl_restart(ln, ppos, r->tbl);
1.112 kristaps 3349:
1.277 schwarze 3350: return ROFF_IGN;
1.109 kristaps 3351: }
3352:
1.230 schwarze 3353: /*
3354: * Handle in-line equation delimiters.
3355: */
1.340 schwarze 3356: static int
1.238 schwarze 3357: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.151 kristaps 3358: {
1.233 schwarze 3359: char *cp1, *cp2;
3360: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.151 kristaps 3361:
1.230 schwarze 3362: /*
3363: * Outside equations, look for an opening delimiter.
3364: * If we are inside an equation, we already know it is
3365: * in-line, or this function wouldn't have been called;
3366: * so look for a closing delimiter.
3367: */
3368:
1.238 schwarze 3369: cp1 = buf->buf + pos;
1.230 schwarze 3370: cp2 = strchr(cp1, r->eqn == NULL ?
3371: r->last_eqn->odelim : r->last_eqn->cdelim);
3372: if (cp2 == NULL)
1.277 schwarze 3373: return ROFF_CONT;
1.230 schwarze 3374:
1.233 schwarze 3375: *cp2++ = '\0';
3376: bef_pr = bef_nl = aft_nl = aft_pr = "";
3377:
3378: /* Handle preceding text, protecting whitespace. */
3379:
1.238 schwarze 3380: if (*buf->buf != '\0') {
1.233 schwarze 3381: if (r->eqn == NULL)
3382: bef_pr = "\\&";
3383: bef_nl = "\n";
3384: }
3385:
3386: /*
3387: * Prepare replacing the delimiter with an equation macro
3388: * and drop leading white space from the equation.
3389: */
1.230 schwarze 3390:
1.233 schwarze 3391: if (r->eqn == NULL) {
3392: while (*cp2 == ' ')
3393: cp2++;
3394: mac = ".EQ";
3395: } else
3396: mac = ".EN";
3397:
3398: /* Handle following text, protecting whitespace. */
3399:
3400: if (*cp2 != '\0') {
3401: aft_nl = "\n";
3402: if (r->eqn != NULL)
3403: aft_pr = "\\&";
3404: }
3405:
3406: /* Do the actual replacement. */
3407:
1.238 schwarze 3408: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.233 schwarze 3409: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.238 schwarze 3410: free(buf->buf);
3411: buf->buf = cp1;
1.230 schwarze 3412:
3413: /* Toggle the in-line state of the eqn subsystem. */
3414:
3415: r->eqn_inline = r->eqn == NULL;
1.277 schwarze 3416: return ROFF_REPARSE;
1.151 kristaps 3417: }
3418:
1.340 schwarze 3419: static int
1.235 schwarze 3420: roff_EQ(ROFF_ARGS)
1.125 kristaps 3421: {
1.319 schwarze 3422: struct roff_node *n;
3423:
1.356 schwarze 3424: if (r->man->meta.macroset == MACROSET_MAN)
1.322 schwarze 3425: man_breakscope(r->man, ROFF_EQ);
1.319 schwarze 3426: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
3427: if (ln > r->man->last->line)
3428: n->flags |= NODE_LINE;
1.348 schwarze 3429: n->eqn = eqn_box_new();
1.319 schwarze 3430: roff_node_append(r->man, n);
3431: r->man->next = ROFF_NEXT_SIBLING;
1.125 kristaps 3432:
1.238 schwarze 3433: assert(r->eqn == NULL);
1.319 schwarze 3434: if (r->last_eqn == NULL)
1.351 schwarze 3435: r->last_eqn = eqn_alloc();
1.319 schwarze 3436: else
3437: eqn_reset(r->last_eqn);
3438: r->eqn = r->last_eqn;
3439: r->eqn->node = n;
1.151 kristaps 3440:
1.238 schwarze 3441: if (buf->buf[pos] != '\0')
1.350 schwarze 3442: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.238 schwarze 3443: ".EQ %s", buf->buf + pos);
1.151 kristaps 3444:
1.277 schwarze 3445: return ROFF_IGN;
1.125 kristaps 3446: }
3447:
1.340 schwarze 3448: static int
1.125 kristaps 3449: roff_EN(ROFF_ARGS)
3450: {
1.319 schwarze 3451: if (r->eqn != NULL) {
3452: eqn_parse(r->eqn);
3453: r->eqn = NULL;
3454: } else
1.350 schwarze 3455: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "EN");
1.319 schwarze 3456: if (buf->buf[pos] != '\0')
1.350 schwarze 3457: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.319 schwarze 3458: "EN %s", buf->buf + pos);
1.277 schwarze 3459: return ROFF_IGN;
1.125 kristaps 3460: }
3461:
1.340 schwarze 3462: static int
1.109 kristaps 3463: roff_TS(ROFF_ARGS)
3464: {
1.321 schwarze 3465: if (r->tbl != NULL) {
1.350 schwarze 3466: mandoc_msg(MANDOCERR_BLK_BROKEN, ln, ppos, "TS breaks TS");
1.346 schwarze 3467: tbl_end(r->tbl, 0);
1.115 kristaps 3468: }
1.361 schwarze 3469: r->man->flags |= ROFF_NONOFILL;
1.351 schwarze 3470: r->tbl = tbl_alloc(ppos, ln, r->last_tbl);
1.346 schwarze 3471: if (r->last_tbl == NULL)
1.321 schwarze 3472: r->first_tbl = r->tbl;
3473: r->last_tbl = r->tbl;
1.297 schwarze 3474: return ROFF_IGN;
3475: }
3476:
1.340 schwarze 3477: static int
1.358 schwarze 3478: roff_noarg(ROFF_ARGS)
3479: {
3480: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3481: man_breakscope(r->man, tok);
3482: if (tok == ROFF_brp)
3483: tok = ROFF_br;
3484: roff_elem_alloc(r->man, ln, ppos, tok);
3485: if (buf->buf[pos] != '\0')
3486: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
3487: "%s %s", roff_name[tok], buf->buf + pos);
3488: if (tok == ROFF_nf)
3489: r->man->flags |= ROFF_NOFILL;
3490: else if (tok == ROFF_fi)
3491: r->man->flags &= ~ROFF_NOFILL;
3492: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3493: r->man->next = ROFF_NEXT_SIBLING;
3494: return ROFF_IGN;
3495: }
3496:
3497: static int
1.297 schwarze 3498: roff_onearg(ROFF_ARGS)
3499: {
3500: struct roff_node *n;
3501: char *cp;
1.305 schwarze 3502: int npos;
1.297 schwarze 3503:
1.302 schwarze 3504: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.320 schwarze 3505: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
3506: tok == ROFF_ti))
1.302 schwarze 3507: man_breakscope(r->man, tok);
3508:
1.309 schwarze 3509: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.305 schwarze 3510: r->man->last = roffce_node;
3511: r->man->next = ROFF_NEXT_SIBLING;
3512: }
3513:
1.297 schwarze 3514: roff_elem_alloc(r->man, ln, ppos, tok);
3515: n = r->man->last;
3516:
3517: cp = buf->buf + pos;
3518: if (*cp != '\0') {
3519: while (*cp != '\0' && *cp != ' ')
3520: cp++;
3521: while (*cp == ' ')
3522: *cp++ = '\0';
3523: if (*cp != '\0')
1.350 schwarze 3524: mandoc_msg(MANDOCERR_ARG_EXCESS,
3525: ln, (int)(cp - buf->buf),
1.297 schwarze 3526: "%s ... %s", roff_name[tok], cp);
3527: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.300 schwarze 3528: }
3529:
1.309 schwarze 3530: if (tok == ROFF_ce || tok == ROFF_rj) {
3531: if (r->man->last->type == ROFFT_ELEM) {
1.305 schwarze 3532: roff_word_alloc(r->man, ln, pos, "1");
3533: r->man->last->flags |= NODE_NOSRC;
3534: }
3535: npos = 0;
3536: if (roff_evalnum(r, ln, r->man->last->string, &npos,
3537: &roffce_lines, 0) == 0) {
1.350 schwarze 3538: mandoc_msg(MANDOCERR_CE_NONUM,
3539: ln, pos, "ce %s", buf->buf + pos);
1.305 schwarze 3540: roffce_lines = 1;
3541: }
3542: if (roffce_lines < 1) {
3543: r->man->last = r->man->last->parent;
3544: roffce_node = NULL;
3545: roffce_lines = 0;
3546: } else
3547: roffce_node = r->man->last->parent;
3548: } else {
3549: n->flags |= NODE_VALID | NODE_ENDED;
3550: r->man->last = n;
3551: }
3552: n->flags |= NODE_LINE;
1.300 schwarze 3553: r->man->next = ROFF_NEXT_SIBLING;
3554: return ROFF_IGN;
3555: }
3556:
1.340 schwarze 3557: static int
1.300 schwarze 3558: roff_manyarg(ROFF_ARGS)
3559: {
3560: struct roff_node *n;
3561: char *sp, *ep;
3562:
3563: roff_elem_alloc(r->man, ln, ppos, tok);
3564: n = r->man->last;
3565:
3566: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3567: while (*ep != '\0' && *ep != ' ')
3568: ep++;
3569: while (*ep == ' ')
3570: *ep++ = '\0';
3571: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.297 schwarze 3572: }
3573:
3574: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3575: r->man->last = n;
3576: r->man->next = ROFF_NEXT_SIBLING;
1.277 schwarze 3577: return ROFF_IGN;
1.251 schwarze 3578: }
3579:
1.340 schwarze 3580: static int
1.311 schwarze 3581: roff_als(ROFF_ARGS)
3582: {
3583: char *oldn, *newn, *end, *value;
3584: size_t oldsz, newsz, valsz;
3585:
3586: newn = oldn = buf->buf + pos;
3587: if (*newn == '\0')
3588: return ROFF_IGN;
3589:
3590: newsz = roff_getname(r, &oldn, ln, pos);
1.363 schwarze 3591: if (newn[newsz] == '\\' || newn[newsz] == '\t' || *oldn == '\0')
1.311 schwarze 3592: return ROFF_IGN;
3593:
3594: end = oldn;
3595: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3596: if (oldsz == 0)
3597: return ROFF_IGN;
3598:
1.338 schwarze 3599: valsz = mandoc_asprintf(&value, ".%.*s \\$@\\\"\n",
1.315 schwarze 3600: (int)oldsz, oldn);
1.311 schwarze 3601: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3602: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3603: free(value);
1.364 schwarze 3604: return ROFF_IGN;
3605: }
3606:
3607: /*
3608: * The .break request only makes sense inside conditionals,
3609: * and that case is already handled in roff_cond_sub().
3610: */
3611: static int
3612: roff_break(ROFF_ARGS)
3613: {
3614: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, pos, "break");
1.296 schwarze 3615: return ROFF_IGN;
1.92 schwarze 3616: }
3617:
1.340 schwarze 3618: static int
1.174 kristaps 3619: roff_cc(ROFF_ARGS)
3620: {
3621: const char *p;
3622:
1.238 schwarze 3623: p = buf->buf + pos;
1.174 kristaps 3624:
1.238 schwarze 3625: if (*p == '\0' || (r->control = *p++) == '.')
1.303 schwarze 3626: r->control = '\0';
1.174 kristaps 3627:
1.238 schwarze 3628: if (*p != '\0')
1.350 schwarze 3629: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.260 schwarze 3630: ln, p - buf->buf, "cc ... %s", p);
1.174 kristaps 3631:
1.341 schwarze 3632: return ROFF_IGN;
3633: }
3634:
3635: static int
3636: roff_char(ROFF_ARGS)
3637: {
3638: const char *p, *kp, *vp;
3639: size_t ksz, vsz;
3640: int font;
3641:
3642: /* Parse the character to be replaced. */
3643:
3644: kp = buf->buf + pos;
3645: p = kp + 1;
3646: if (*kp == '\0' || (*kp == '\\' &&
3647: mandoc_escape(&p, NULL, NULL) != ESCAPE_SPECIAL) ||
3648: (*p != ' ' && *p != '\0')) {
1.350 schwarze 3649: mandoc_msg(MANDOCERR_CHAR_ARG, ln, pos, "char %s", kp);
1.341 schwarze 3650: return ROFF_IGN;
3651: }
3652: ksz = p - kp;
3653: while (*p == ' ')
3654: p++;
3655:
3656: /*
3657: * If the replacement string contains a font escape sequence,
3658: * we have to restore the font at the end.
3659: */
3660:
3661: vp = p;
3662: vsz = strlen(p);
3663: font = 0;
3664: while (*p != '\0') {
3665: if (*p++ != '\\')
3666: continue;
3667: switch (mandoc_escape(&p, NULL, NULL)) {
3668: case ESCAPE_FONT:
3669: case ESCAPE_FONTROMAN:
3670: case ESCAPE_FONTITALIC:
3671: case ESCAPE_FONTBOLD:
3672: case ESCAPE_FONTBI:
1.378 schwarze 3673: case ESCAPE_FONTCR:
3674: case ESCAPE_FONTCB:
3675: case ESCAPE_FONTCI:
1.341 schwarze 3676: case ESCAPE_FONTPREV:
3677: font++;
3678: break;
3679: default:
3680: break;
3681: }
3682: }
3683: if (font > 1)
1.350 schwarze 3684: mandoc_msg(MANDOCERR_CHAR_FONT,
3685: ln, (int)(vp - buf->buf), "%s", vp);
1.341 schwarze 3686:
3687: /*
3688: * Approximate the effect of .char using the .tr tables.
3689: * XXX In groff, .char and .tr interact differently.
3690: */
3691:
3692: if (ksz == 1) {
3693: if (r->xtab == NULL)
3694: r->xtab = mandoc_calloc(128, sizeof(*r->xtab));
3695: assert((unsigned int)*kp < 128);
3696: free(r->xtab[(int)*kp].p);
3697: r->xtab[(int)*kp].sz = mandoc_asprintf(&r->xtab[(int)*kp].p,
3698: "%s%s", vp, font ? "\fP" : "");
3699: } else {
3700: roff_setstrn(&r->xmbtab, kp, ksz, vp, vsz, 0);
3701: if (font)
3702: roff_setstrn(&r->xmbtab, kp, ksz, "\\fP", 3, 1);
3703: }
1.277 schwarze 3704: return ROFF_IGN;
1.174 kristaps 3705: }
3706:
1.340 schwarze 3707: static int
1.303 schwarze 3708: roff_ec(ROFF_ARGS)
3709: {
3710: const char *p;
3711:
3712: p = buf->buf + pos;
3713: if (*p == '\0')
3714: r->escape = '\\';
3715: else {
3716: r->escape = *p;
3717: if (*++p != '\0')
1.350 schwarze 3718: mandoc_msg(MANDOCERR_ARG_EXCESS, ln,
3719: (int)(p - buf->buf), "ec ... %s", p);
1.303 schwarze 3720: }
3721: return ROFF_IGN;
3722: }
3723:
1.340 schwarze 3724: static int
1.303 schwarze 3725: roff_eo(ROFF_ARGS)
3726: {
3727: r->escape = '\0';
3728: if (buf->buf[pos] != '\0')
1.350 schwarze 3729: mandoc_msg(MANDOCERR_ARG_SKIP,
1.303 schwarze 3730: ln, pos, "eo %s", buf->buf + pos);
3731: return ROFF_IGN;
1.330 schwarze 3732: }
3733:
1.340 schwarze 3734: static int
1.330 schwarze 3735: roff_nop(ROFF_ARGS)
3736: {
3737: while (buf->buf[pos] == ' ')
3738: pos++;
3739: *offs = pos;
3740: return ROFF_RERUN;
1.303 schwarze 3741: }
3742:
1.340 schwarze 3743: static int
1.164 kristaps 3744: roff_tr(ROFF_ARGS)
3745: {
3746: const char *p, *first, *second;
3747: size_t fsz, ssz;
3748: enum mandoc_esc esc;
3749:
1.238 schwarze 3750: p = buf->buf + pos;
1.164 kristaps 3751:
1.238 schwarze 3752: if (*p == '\0') {
1.350 schwarze 3753: mandoc_msg(MANDOCERR_REQ_EMPTY, ln, ppos, "tr");
1.277 schwarze 3754: return ROFF_IGN;
1.164 kristaps 3755: }
3756:
1.238 schwarze 3757: while (*p != '\0') {
1.164 kristaps 3758: fsz = ssz = 1;
3759:
3760: first = p++;
1.238 schwarze 3761: if (*first == '\\') {
1.164 kristaps 3762: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3763: if (esc == ESCAPE_ERROR) {
1.350 schwarze 3764: mandoc_msg(MANDOCERR_ESC_BAD, ln,
3765: (int)(p - buf->buf), "%s", first);
1.277 schwarze 3766: return ROFF_IGN;
1.164 kristaps 3767: }
3768: fsz = (size_t)(p - first);
3769: }
3770:
3771: second = p++;
1.238 schwarze 3772: if (*second == '\\') {
1.164 kristaps 3773: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3774: if (esc == ESCAPE_ERROR) {
1.350 schwarze 3775: mandoc_msg(MANDOCERR_ESC_BAD, ln,
3776: (int)(p - buf->buf), "%s", second);
1.277 schwarze 3777: return ROFF_IGN;
1.164 kristaps 3778: }
3779: ssz = (size_t)(p - second);
1.238 schwarze 3780: } else if (*second == '\0') {
1.350 schwarze 3781: mandoc_msg(MANDOCERR_TR_ODD, ln,
3782: (int)(first - buf->buf), "tr %s", first);
1.164 kristaps 3783: second = " ";
1.165 kristaps 3784: p--;
1.164 kristaps 3785: }
3786:
1.167 kristaps 3787: if (fsz > 1) {
1.207 schwarze 3788: roff_setstrn(&r->xmbtab, first, fsz,
3789: second, ssz, 0);
1.167 kristaps 3790: continue;
3791: }
3792:
1.238 schwarze 3793: if (r->xtab == NULL)
1.207 schwarze 3794: r->xtab = mandoc_calloc(128,
3795: sizeof(struct roffstr));
1.167 kristaps 3796:
3797: free(r->xtab[(int)*first].p);
3798: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3799: r->xtab[(int)*first].sz = ssz;
1.164 kristaps 3800: }
3801:
1.277 schwarze 3802: return ROFF_IGN;
1.164 kristaps 3803: }
3804:
1.339 schwarze 3805: /*
3806: * Implementation of the .return request.
3807: * There is no need to call roff_userret() from here.
3808: * The read module will call that after rewinding the reader stack
3809: * to the place from where the current macro was called.
3810: */
1.340 schwarze 3811: static int
1.339 schwarze 3812: roff_return(ROFF_ARGS)
3813: {
3814: if (r->mstackpos >= 0)
1.340 schwarze 3815: return ROFF_IGN | ROFF_USERRET;
1.339 schwarze 3816:
1.350 schwarze 3817: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "return");
1.339 schwarze 3818: return ROFF_IGN;
3819: }
3820:
1.340 schwarze 3821: static int
1.306 schwarze 3822: roff_rn(ROFF_ARGS)
3823: {
3824: const char *value;
3825: char *oldn, *newn, *end;
3826: size_t oldsz, newsz;
1.315 schwarze 3827: int deftype;
1.306 schwarze 3828:
3829: oldn = newn = buf->buf + pos;
3830: if (*oldn == '\0')
3831: return ROFF_IGN;
3832:
3833: oldsz = roff_getname(r, &newn, ln, pos);
1.363 schwarze 3834: if (oldn[oldsz] == '\\' || oldn[oldsz] == '\t' || *newn == '\0')
1.306 schwarze 3835: return ROFF_IGN;
3836:
3837: end = newn;
3838: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3839: if (newsz == 0)
3840: return ROFF_IGN;
3841:
1.315 schwarze 3842: deftype = ROFFDEF_ANY;
3843: value = roff_getstrn(r, oldn, oldsz, &deftype);
3844: switch (deftype) {
3845: case ROFFDEF_USER:
1.306 schwarze 3846: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3847: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3848: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.315 schwarze 3849: break;
3850: case ROFFDEF_PRE:
3851: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3852: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3853: break;
3854: case ROFFDEF_REN:
1.306 schwarze 3855: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3856: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.315 schwarze 3857: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3858: break;
3859: case ROFFDEF_STD:
1.306 schwarze 3860: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.315 schwarze 3861: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3862: break;
3863: default:
3864: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3865: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3866: break;
3867: }
1.306 schwarze 3868: return ROFF_IGN;
3869: }
3870:
1.340 schwarze 3871: static int
1.339 schwarze 3872: roff_shift(ROFF_ARGS)
3873: {
3874: struct mctx *ctx;
1.382 schwarze 3875: int argpos, levels, i;
1.339 schwarze 3876:
1.382 schwarze 3877: argpos = pos;
1.339 schwarze 3878: levels = 1;
3879: if (buf->buf[pos] != '\0' &&
3880: roff_evalnum(r, ln, buf->buf, &pos, &levels, 0) == 0) {
1.350 schwarze 3881: mandoc_msg(MANDOCERR_CE_NONUM,
1.339 schwarze 3882: ln, pos, "shift %s", buf->buf + pos);
3883: levels = 1;
3884: }
3885: if (r->mstackpos < 0) {
1.350 schwarze 3886: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "shift");
1.339 schwarze 3887: return ROFF_IGN;
3888: }
3889: ctx = r->mstack + r->mstackpos;
3890: if (levels > ctx->argc) {
1.350 schwarze 3891: mandoc_msg(MANDOCERR_SHIFT,
1.382 schwarze 3892: ln, argpos, "%d, but max is %d", levels, ctx->argc);
1.339 schwarze 3893: levels = ctx->argc;
1.382 schwarze 3894: }
3895: if (levels < 0) {
3896: mandoc_msg(MANDOCERR_ARG_NEG, ln, argpos, "shift %d", levels);
3897: levels = 0;
1.339 schwarze 3898: }
3899: if (levels == 0)
3900: return ROFF_IGN;
3901: for (i = 0; i < levels; i++)
3902: free(ctx->argv[i]);
3903: ctx->argc -= levels;
3904: for (i = 0; i < ctx->argc; i++)
3905: ctx->argv[i] = ctx->argv[i + levels];
3906: return ROFF_IGN;
3907: }
3908:
1.340 schwarze 3909: static int
1.105 kristaps 3910: roff_so(ROFF_ARGS)
3911: {
1.249 schwarze 3912: char *name, *cp;
1.105 kristaps 3913:
1.238 schwarze 3914: name = buf->buf + pos;
1.350 schwarze 3915: mandoc_msg(MANDOCERR_SO, ln, ppos, "so %s", name);
1.105 kristaps 3916:
3917: /*
3918: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3919: * opening anything that's not in our cwd or anything beneath
3920: * it. Thus, explicitly disallow traversing up the file-system
3921: * or using absolute paths.
3922: */
3923:
1.238 schwarze 3924: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.350 schwarze 3925: mandoc_msg(MANDOCERR_SO_PATH, ln, ppos, ".so %s", name);
1.249 schwarze 3926: buf->sz = mandoc_asprintf(&cp,
3927: ".sp\nSee the file %s.\n.sp", name) + 1;
3928: free(buf->buf);
3929: buf->buf = cp;
3930: *offs = 0;
1.277 schwarze 3931: return ROFF_REPARSE;
1.105 kristaps 3932: }
3933:
3934: *offs = pos;
1.277 schwarze 3935: return ROFF_SO;
1.105 kristaps 3936: }
1.92 schwarze 3937:
1.266 schwarze 3938: /* --- user defined strings and macros ------------------------------------ */
3939:
1.340 schwarze 3940: static int
1.106 kristaps 3941: roff_userdef(ROFF_ARGS)
1.99 kristaps 3942: {
1.339 schwarze 3943: struct mctx *ctx;
3944: char *arg, *ap, *dst, *src;
3945: size_t sz;
3946:
1.365 schwarze 3947: /* If the macro is empty, ignore it altogether. */
3948:
3949: if (*r->current_string == '\0')
3950: return ROFF_IGN;
3951:
1.339 schwarze 3952: /* Initialize a new macro stack context. */
3953:
3954: if (++r->mstackpos == r->mstacksz) {
3955: r->mstack = mandoc_recallocarray(r->mstack,
3956: r->mstacksz, r->mstacksz + 8, sizeof(*r->mstack));
3957: r->mstacksz += 8;
3958: }
3959: ctx = r->mstack + r->mstackpos;
3960: ctx->argc = 0;
3961:
3962: /*
3963: * Collect pointers to macro argument strings,
3964: * NUL-terminating them and escaping quotes.
3965: */
3966:
3967: src = buf->buf + pos;
3968: while (*src != '\0') {
3969: if (ctx->argc == ctx->argsz) {
3970: ctx->argsz += 8;
3971: ctx->argv = mandoc_reallocarray(ctx->argv,
3972: ctx->argsz, sizeof(*ctx->argv));
3973: }
1.355 schwarze 3974: arg = roff_getarg(r, &src, ln, &pos);
1.339 schwarze 3975: sz = 1; /* For the terminating NUL. */
3976: for (ap = arg; *ap != '\0'; ap++)
3977: sz += *ap == '"' ? 4 : 1;
3978: ctx->argv[ctx->argc++] = dst = mandoc_malloc(sz);
3979: for (ap = arg; *ap != '\0'; ap++) {
3980: if (*ap == '"') {
3981: memcpy(dst, "\\(dq", 4);
3982: dst += 4;
3983: } else
3984: *dst++ = *ap;
1.106 kristaps 3985: }
1.339 schwarze 3986: *dst = '\0';
1.355 schwarze 3987: free(arg);
1.337 schwarze 3988: }
3989:
1.339 schwarze 3990: /* Replace the macro invocation by the macro definition. */
1.263 schwarze 3991:
1.238 schwarze 3992: free(buf->buf);
1.339 schwarze 3993: buf->buf = mandoc_strdup(r->current_string);
3994: buf->sz = strlen(buf->buf) + 1;
1.248 schwarze 3995: *offs = 0;
1.106 kristaps 3996:
1.365 schwarze 3997: return buf->buf[buf->sz - 2] == '\n' ?
1.340 schwarze 3998: ROFF_REPARSE | ROFF_USERCALL : ROFF_IGN | ROFF_APPEND;
1.99 kristaps 3999: }
1.121 schwarze 4000:
1.306 schwarze 4001: /*
4002: * Calling a high-level macro that was renamed with .rn.
4003: * r->current_string has already been set up by roff_parse().
4004: */
1.340 schwarze 4005: static int
1.306 schwarze 4006: roff_renamed(ROFF_ARGS)
4007: {
4008: char *nbuf;
4009:
1.315 schwarze 4010: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
4011: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.306 schwarze 4012: free(buf->buf);
4013: buf->buf = nbuf;
1.329 schwarze 4014: *offs = 0;
1.306 schwarze 4015: return ROFF_CONT;
4016: }
4017:
1.362 schwarze 4018: /*
4019: * Measure the length in bytes of the roff identifier at *cpp
4020: * and advance the pointer to the next word.
4021: */
1.212 schwarze 4022: static size_t
1.121 schwarze 4023: roff_getname(struct roff *r, char **cpp, int ln, int pos)
4024: {
4025: char *name, *cp;
1.212 schwarze 4026: size_t namesz;
1.121 schwarze 4027:
4028: name = *cpp;
1.362 schwarze 4029: if (*name == '\0')
1.277 schwarze 4030: return 0;
1.121 schwarze 4031:
1.362 schwarze 4032: /* Advance cp to the byte after the end of the name. */
4033:
1.212 schwarze 4034: for (cp = name; 1; cp++) {
1.362 schwarze 4035: namesz = cp - name;
1.363 schwarze 4036: if (*cp == '\0')
1.212 schwarze 4037: break;
1.363 schwarze 4038: if (*cp == ' ' || *cp == '\t') {
4039: cp++;
4040: break;
4041: }
1.362 schwarze 4042: if (*cp != '\\')
1.121 schwarze 4043: continue;
1.362 schwarze 4044: if (cp[1] == '{' || cp[1] == '}')
1.215 schwarze 4045: break;
1.362 schwarze 4046: if (*++cp == '\\')
1.121 schwarze 4047: continue;
1.350 schwarze 4048: mandoc_msg(MANDOCERR_NAMESC, ln, pos,
1.224 schwarze 4049: "%.*s", (int)(cp - name + 1), name);
1.212 schwarze 4050: mandoc_escape((const char **)&cp, NULL, NULL);
4051: break;
1.121 schwarze 4052: }
4053:
4054: /* Read past spaces. */
1.362 schwarze 4055:
4056: while (*cp == ' ')
1.121 schwarze 4057: cp++;
4058:
4059: *cpp = cp;
1.277 schwarze 4060: return namesz;
1.121 schwarze 4061: }
4062:
1.106 kristaps 4063: /*
4064: * Store *string into the user-defined string called *name.
4065: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.193 schwarze 4066: * append == 0: replace mode
4067: * append == 1: single-line append mode
4068: * append == 2: multiline append mode, append '\n' after each call
1.106 kristaps 4069: */
1.94 kristaps 4070: static void
1.106 kristaps 4071: roff_setstr(struct roff *r, const char *name, const char *string,
1.193 schwarze 4072: int append)
1.92 schwarze 4073: {
1.315 schwarze 4074: size_t namesz;
1.164 kristaps 4075:
1.315 schwarze 4076: namesz = strlen(name);
4077: roff_setstrn(&r->strtab, name, namesz, string,
1.207 schwarze 4078: string ? strlen(string) : 0, append);
1.315 schwarze 4079: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.164 kristaps 4080: }
4081:
4082: static void
1.166 kristaps 4083: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.193 schwarze 4084: const char *string, size_t stringsz, int append)
1.164 kristaps 4085: {
1.166 kristaps 4086: struct roffkv *n;
1.164 kristaps 4087: char *c;
4088: int i;
4089: size_t oldch, newch;
1.92 schwarze 4090:
1.106 kristaps 4091: /* Search for an existing string with the same name. */
1.164 kristaps 4092: n = *r;
4093:
1.211 schwarze 4094: while (n && (namesz != n->key.sz ||
4095: strncmp(n->key.p, name, namesz)))
1.92 schwarze 4096: n = n->next;
1.94 kristaps 4097:
4098: if (NULL == n) {
1.106 kristaps 4099: /* Create a new string table entry. */
1.166 kristaps 4100: n = mandoc_malloc(sizeof(struct roffkv));
4101: n->key.p = mandoc_strndup(name, namesz);
4102: n->key.sz = namesz;
4103: n->val.p = NULL;
4104: n->val.sz = 0;
1.164 kristaps 4105: n->next = *r;
4106: *r = n;
1.193 schwarze 4107: } else if (0 == append) {
1.166 kristaps 4108: free(n->val.p);
4109: n->val.p = NULL;
4110: n->val.sz = 0;
1.106 kristaps 4111: }
4112:
4113: if (NULL == string)
4114: return;
4115:
4116: /*
4117: * One additional byte for the '\n' in multiline mode,
4118: * and one for the terminating '\0'.
4119: */
1.193 schwarze 4120: newch = stringsz + (1 < append ? 2u : 1u);
1.164 kristaps 4121:
1.166 kristaps 4122: if (NULL == n->val.p) {
4123: n->val.p = mandoc_malloc(newch);
4124: *n->val.p = '\0';
1.106 kristaps 4125: oldch = 0;
4126: } else {
1.166 kristaps 4127: oldch = n->val.sz;
4128: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.106 kristaps 4129: }
4130:
4131: /* Skip existing content in the destination buffer. */
1.166 kristaps 4132: c = n->val.p + (int)oldch;
1.106 kristaps 4133:
4134: /* Append new content to the destination buffer. */
1.164 kristaps 4135: i = 0;
4136: while (i < (int)stringsz) {
1.106 kristaps 4137: /*
4138: * Rudimentary roff copy mode:
4139: * Handle escaped backslashes.
4140: */
1.164 kristaps 4141: if ('\\' == string[i] && '\\' == string[i + 1])
4142: i++;
4143: *c++ = string[i++];
1.106 kristaps 4144: }
1.94 kristaps 4145:
1.106 kristaps 4146: /* Append terminating bytes. */
1.193 schwarze 4147: if (1 < append)
1.106 kristaps 4148: *c++ = '\n';
1.163 kristaps 4149:
1.106 kristaps 4150: *c = '\0';
1.166 kristaps 4151: n->val.sz = (int)(c - n->val.p);
1.92 schwarze 4152: }
4153:
1.94 kristaps 4154: static const char *
1.325 schwarze 4155: roff_getstrn(struct roff *r, const char *name, size_t len,
1.315 schwarze 4156: int *deftype)
1.92 schwarze 4157: {
1.315 schwarze 4158: const struct roffkv *n;
1.325 schwarze 4159: int found, i;
1.315 schwarze 4160: enum roff_tok tok;
4161:
1.325 schwarze 4162: found = 0;
4163: for (n = r->strtab; n != NULL; n = n->next) {
4164: if (strncmp(name, n->key.p, len) != 0 ||
4165: n->key.p[len] != '\0' || n->val.p == NULL)
4166: continue;
4167: if (*deftype & ROFFDEF_USER) {
4168: *deftype = ROFFDEF_USER;
4169: return n->val.p;
4170: } else {
4171: found = 1;
4172: break;
4173: }
4174: }
4175: for (n = r->rentab; n != NULL; n = n->next) {
4176: if (strncmp(name, n->key.p, len) != 0 ||
4177: n->key.p[len] != '\0' || n->val.p == NULL)
4178: continue;
4179: if (*deftype & ROFFDEF_REN) {
4180: *deftype = ROFFDEF_REN;
4181: return n->val.p;
4182: } else {
4183: found = 1;
4184: break;
1.315 schwarze 4185: }
4186: }
1.325 schwarze 4187: for (i = 0; i < PREDEFS_MAX; i++) {
4188: if (strncmp(name, predefs[i].name, len) != 0 ||
4189: predefs[i].name[len] != '\0')
4190: continue;
4191: if (*deftype & ROFFDEF_PRE) {
4192: *deftype = ROFFDEF_PRE;
4193: return predefs[i].str;
4194: } else {
4195: found = 1;
4196: break;
1.315 schwarze 4197: }
4198: }
1.356 schwarze 4199: if (r->man->meta.macroset != MACROSET_MAN) {
1.325 schwarze 4200: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
4201: if (strncmp(name, roff_name[tok], len) != 0 ||
4202: roff_name[tok][len] != '\0')
4203: continue;
4204: if (*deftype & ROFFDEF_STD) {
4205: *deftype = ROFFDEF_STD;
4206: return NULL;
4207: } else {
4208: found = 1;
4209: break;
1.315 schwarze 4210: }
4211: }
4212: }
1.356 schwarze 4213: if (r->man->meta.macroset != MACROSET_MDOC) {
1.325 schwarze 4214: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
4215: if (strncmp(name, roff_name[tok], len) != 0 ||
4216: roff_name[tok][len] != '\0')
4217: continue;
4218: if (*deftype & ROFFDEF_STD) {
4219: *deftype = ROFFDEF_STD;
4220: return NULL;
4221: } else {
4222: found = 1;
4223: break;
1.315 schwarze 4224: }
4225: }
1.325 schwarze 4226: }
4227:
4228: if (found == 0 && *deftype != ROFFDEF_ANY) {
4229: if (*deftype & ROFFDEF_REN) {
4230: /*
4231: * This might still be a request,
4232: * so do not treat it as undefined yet.
4233: */
4234: *deftype = ROFFDEF_UNDEF;
4235: return NULL;
1.315 schwarze 4236: }
1.325 schwarze 4237:
4238: /* Using an undefined string defines it to be empty. */
4239:
4240: roff_setstrn(&r->strtab, name, len, "", 0, 0);
4241: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.315 schwarze 4242: }
1.325 schwarze 4243:
1.315 schwarze 4244: *deftype = 0;
1.277 schwarze 4245: return NULL;
1.92 schwarze 4246: }
4247:
1.94 kristaps 4248: static void
1.167 kristaps 4249: roff_freestr(struct roffkv *r)
1.92 schwarze 4250: {
1.166 kristaps 4251: struct roffkv *n, *nn;
1.92 schwarze 4252:
1.167 kristaps 4253: for (n = r; n; n = nn) {
1.166 kristaps 4254: free(n->key.p);
4255: free(n->val.p);
1.92 schwarze 4256: nn = n->next;
4257: free(n);
4258: }
1.114 kristaps 4259: }
1.266 schwarze 4260:
4261: /* --- accessors and utility functions ------------------------------------ */
1.164 kristaps 4262:
4263: /*
4264: * Duplicate an input string, making the appropriate character
4265: * conversations (as stipulated by `tr') along the way.
4266: * Returns a heap-allocated string with all the replacements made.
4267: */
4268: char *
4269: roff_strdup(const struct roff *r, const char *p)
4270: {
1.166 kristaps 4271: const struct roffkv *cp;
1.164 kristaps 4272: char *res;
4273: const char *pp;
4274: size_t ssz, sz;
4275: enum mandoc_esc esc;
4276:
1.167 kristaps 4277: if (NULL == r->xmbtab && NULL == r->xtab)
1.277 schwarze 4278: return mandoc_strdup(p);
1.164 kristaps 4279: else if ('\0' == *p)
1.277 schwarze 4280: return mandoc_strdup("");
1.164 kristaps 4281:
4282: /*
4283: * Step through each character looking for term matches
4284: * (remember that a `tr' can be invoked with an escape, which is
4285: * a glyph but the escape is multi-character).
4286: * We only do this if the character hash has been initialised
4287: * and the string is >0 length.
4288: */
4289:
4290: res = NULL;
4291: ssz = 0;
4292:
4293: while ('\0' != *p) {
1.289 schwarze 4294: assert((unsigned int)*p < 128);
4295: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.167 kristaps 4296: sz = r->xtab[(int)*p].sz;
4297: res = mandoc_realloc(res, ssz + sz + 1);
4298: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
4299: ssz += sz;
4300: p++;
4301: continue;
4302: } else if ('\\' != *p) {
4303: res = mandoc_realloc(res, ssz + 2);
4304: res[ssz++] = *p++;
4305: continue;
4306: }
4307:
1.164 kristaps 4308: /* Search for term matches. */
1.167 kristaps 4309: for (cp = r->xmbtab; cp; cp = cp->next)
1.166 kristaps 4310: if (0 == strncmp(p, cp->key.p, cp->key.sz))
1.164 kristaps 4311: break;
4312:
4313: if (NULL != cp) {
4314: /*
4315: * A match has been found.
4316: * Append the match to the array and move
4317: * forward by its keysize.
4318: */
1.207 schwarze 4319: res = mandoc_realloc(res,
4320: ssz + cp->val.sz + 1);
1.166 kristaps 4321: memcpy(res + ssz, cp->val.p, cp->val.sz);
4322: ssz += cp->val.sz;
4323: p += (int)cp->key.sz;
1.164 kristaps 4324: continue;
4325: }
4326:
1.167 kristaps 4327: /*
4328: * Handle escapes carefully: we need to copy
4329: * over just the escape itself, or else we might
4330: * do replacements within the escape itself.
4331: * Make sure to pass along the bogus string.
4332: */
4333: pp = p++;
4334: esc = mandoc_escape(&p, NULL, NULL);
4335: if (ESCAPE_ERROR == esc) {
4336: sz = strlen(pp);
1.164 kristaps 4337: res = mandoc_realloc(res, ssz + sz + 1);
4338: memcpy(res + ssz, pp, sz);
1.167 kristaps 4339: break;
1.164 kristaps 4340: }
1.207 schwarze 4341: /*
4342: * We bail out on bad escapes.
1.167 kristaps 4343: * No need to warn: we already did so when
1.355 schwarze 4344: * roff_expand() was called.
1.167 kristaps 4345: */
4346: sz = (int)(p - pp);
4347: res = mandoc_realloc(res, ssz + sz + 1);
4348: memcpy(res + ssz, pp, sz);
4349: ssz += sz;
1.164 kristaps 4350: }
4351:
4352: res[(int)ssz] = '\0';
1.277 schwarze 4353: return res;
1.227 schwarze 4354: }
4355:
4356: int
4357: roff_getformat(const struct roff *r)
4358: {
4359:
1.277 schwarze 4360: return r->format;
1.174 kristaps 4361: }
4362:
4363: /*
1.207 schwarze 4364: * Find out whether a line is a macro line or not.
1.174 kristaps 4365: * If it is, adjust the current position and return one; if it isn't,
4366: * return zero and don't change the current position.
4367: * If the control character has been set with `.cc', then let that grain
4368: * precedence.
4369: * This is slighly contrary to groff, where using the non-breaking
4370: * control character when `cc' has been invoked will cause the
4371: * non-breaking macro contents to be printed verbatim.
4372: */
4373: int
4374: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
4375: {
4376: int pos;
4377:
4378: pos = *ppos;
4379:
1.303 schwarze 4380: if (r->control != '\0' && cp[pos] == r->control)
1.174 kristaps 4381: pos++;
1.303 schwarze 4382: else if (r->control != '\0')
1.277 schwarze 4383: return 0;
1.174 kristaps 4384: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
4385: pos += 2;
4386: else if ('.' == cp[pos] || '\'' == cp[pos])
4387: pos++;
4388: else
1.277 schwarze 4389: return 0;
1.174 kristaps 4390:
4391: while (' ' == cp[pos] || '\t' == cp[pos])
4392: pos++;
4393:
4394: *ppos = pos;
1.277 schwarze 4395: return 1;
1.74 kristaps 4396: }
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