Annotation of mandoc/roff.c, Revision 1.376
1.376 ! schwarze 1: /* $Id: roff.c,v 1.375 2020/08/03 11:02:57 schwarze Exp $ */
1.1 kristaps 2: /*
1.372 schwarze 3: * Copyright (c) 2010-2015, 2017-2020 Ingo Schwarze <schwarze@openbsd.org>
1.267 schwarze 4: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.1 kristaps 5: *
6: * Permission to use, copy, modify, and distribute this software for any
1.66 kristaps 7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
1.1 kristaps 9: *
1.106 kristaps 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.66 kristaps 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.106 kristaps 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.66 kristaps 13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.372 schwarze 17: *
18: * Implementation of the roff(7) parser for mandoc(1).
1.1 kristaps 19: */
1.66 kristaps 20: #include "config.h"
1.225 schwarze 21:
22: #include <sys/types.h>
1.30 kristaps 23:
1.67 kristaps 24: #include <assert.h>
1.85 kristaps 25: #include <ctype.h>
1.245 schwarze 26: #include <limits.h>
1.295 schwarze 27: #include <stddef.h>
28: #include <stdint.h>
1.178 schwarze 29: #include <stdio.h>
1.1 kristaps 30: #include <stdlib.h>
1.67 kristaps 31: #include <string.h>
1.1 kristaps 32:
1.201 schwarze 33: #include "mandoc_aux.h"
1.295 schwarze 34: #include "mandoc_ohash.h"
1.345 schwarze 35: #include "mandoc.h"
1.265 schwarze 36: #include "roff.h"
1.349 schwarze 37: #include "mandoc_parse.h"
1.226 schwarze 38: #include "libmandoc.h"
1.266 schwarze 39: #include "roff_int.h"
1.346 schwarze 40: #include "tbl_parse.h"
1.347 schwarze 41: #include "eqn_parse.h"
1.82 kristaps 42:
1.355 schwarze 43: /*
44: * ASCII_ESC is used to signal from roff_getarg() to roff_expand()
45: * that an escape sequence resulted from copy-in processing and
46: * needs to be checked or interpolated. As it is used nowhere
47: * else, it is defined here rather than in a header file.
48: */
49: #define ASCII_ESC 27
50:
1.170 schwarze 51: /* Maximum number of string expansions per line, to break infinite loops. */
52: #define EXPAND_LIMIT 1000
53:
1.315 schwarze 54: /* Types of definitions of macros and strings. */
55: #define ROFFDEF_USER (1 << 1) /* User-defined. */
56: #define ROFFDEF_PRE (1 << 2) /* Predefined. */
57: #define ROFFDEF_REN (1 << 3) /* Renamed standard macro. */
58: #define ROFFDEF_STD (1 << 4) /* mdoc(7) or man(7) macro. */
59: #define ROFFDEF_ANY (ROFFDEF_USER | ROFFDEF_PRE | \
60: ROFFDEF_REN | ROFFDEF_STD)
1.325 schwarze 61: #define ROFFDEF_UNDEF (1 << 5) /* Completely undefined. */
1.315 schwarze 62:
1.266 schwarze 63: /* --- data types --------------------------------------------------------- */
64:
1.147 kristaps 65: /*
1.167 kristaps 66: * An incredibly-simple string buffer.
67: */
1.94 kristaps 68: struct roffstr {
1.167 kristaps 69: char *p; /* nil-terminated buffer */
70: size_t sz; /* saved strlen(p) */
1.166 kristaps 71: };
72:
73: /*
1.167 kristaps 74: * A key-value roffstr pair as part of a singly-linked list.
1.166 kristaps 75: */
76: struct roffkv {
77: struct roffstr key;
78: struct roffstr val;
79: struct roffkv *next; /* next in list */
1.94 kristaps 80: };
81:
1.180 schwarze 82: /*
83: * A single number register as part of a singly-linked list.
84: */
85: struct roffreg {
86: struct roffstr key;
1.181 schwarze 87: int val;
1.327 schwarze 88: int step;
1.180 schwarze 89: struct roffreg *next;
90: };
91:
1.295 schwarze 92: /*
93: * Association of request and macro names with token IDs.
94: */
95: struct roffreq {
96: enum roff_tok tok;
97: char name[];
98: };
99:
1.339 schwarze 100: /*
101: * A macro processing context.
102: * More than one is needed when macro calls are nested.
103: */
104: struct mctx {
105: char **argv;
106: int argc;
107: int argsz;
108: };
109:
1.67 kristaps 110: struct roff {
1.296 schwarze 111: struct roff_man *man; /* mdoc or man parser */
1.67 kristaps 112: struct roffnode *last; /* leaf of stack */
1.339 schwarze 113: struct mctx *mstack; /* stack of macro contexts */
1.223 schwarze 114: int *rstack; /* stack of inverted `ie' values */
1.295 schwarze 115: struct ohash *reqtab; /* request lookup table */
1.180 schwarze 116: struct roffreg *regtab; /* number registers */
1.166 kristaps 117: struct roffkv *strtab; /* user-defined strings & macros */
1.306 schwarze 118: struct roffkv *rentab; /* renamed strings & macros */
1.167 kristaps 119: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
120: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.106 kristaps 121: const char *current_string; /* value of last called user macro */
1.118 kristaps 122: struct tbl_node *first_tbl; /* first table parsed */
123: struct tbl_node *last_tbl; /* last table parsed */
124: struct tbl_node *tbl; /* current table being parsed */
1.319 schwarze 125: struct eqn_node *last_eqn; /* equation parser */
126: struct eqn_node *eqn; /* active equation parser */
1.230 schwarze 127: int eqn_inline; /* current equation is inline */
1.223 schwarze 128: int options; /* parse options */
1.339 schwarze 129: int mstacksz; /* current size of mstack */
130: int mstackpos; /* position in mstack */
1.223 schwarze 131: int rstacksz; /* current size limit of rstack */
132: int rstackpos; /* position in rstack */
1.227 schwarze 133: int format; /* current file in mdoc or man format */
1.223 schwarze 134: char control; /* control character */
1.303 schwarze 135: char escape; /* escape character */
1.79 kristaps 136: };
137:
1.364 schwarze 138: /*
139: * A macro definition, condition, or ignored block.
140: */
1.67 kristaps 141: struct roffnode {
1.294 schwarze 142: enum roff_tok tok; /* type of node */
1.67 kristaps 143: struct roffnode *parent; /* up one in stack */
144: int line; /* parse line */
145: int col; /* parse col */
1.106 kristaps 146: char *name; /* node name, e.g. macro name */
1.364 schwarze 147: char *end; /* custom end macro of the block */
148: int endspan; /* scope to: 1=eol 2=next line -1=\} */
149: int rule; /* content is: 1=evaluated 0=skipped */
1.67 kristaps 150: };
151:
152: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.294 schwarze 153: enum roff_tok tok, /* tok of macro */ \
1.238 schwarze 154: struct buf *buf, /* input buffer */ \
1.67 kristaps 155: int ln, /* parse line */ \
1.75 kristaps 156: int ppos, /* original pos in buffer */ \
157: int pos, /* current pos in buffer */ \
1.74 kristaps 158: int *offs /* reset offset of buffer data */
1.67 kristaps 159:
1.340 schwarze 160: typedef int (*roffproc)(ROFF_ARGS);
1.67 kristaps 161:
162: struct roffmac {
1.79 kristaps 163: roffproc proc; /* process new macro */
164: roffproc text; /* process as child text of macro */
165: roffproc sub; /* process as child of macro */
166: int flags;
167: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.67 kristaps 168: };
169:
1.141 kristaps 170: struct predef {
171: const char *name; /* predefined input name */
172: const char *str; /* replacement symbol */
173: };
174:
175: #define PREDEF(__name, __str) \
176: { (__name), (__str) },
177:
1.266 schwarze 178: /* --- function prototypes ------------------------------------------------ */
179:
1.340 schwarze 180: static int roffnode_cleanscope(struct roff *);
181: static int roffnode_pop(struct roff *);
1.294 schwarze 182: static void roffnode_push(struct roff *, enum roff_tok,
1.155 kristaps 183: const char *, int, int);
1.346 schwarze 184: static void roff_addtbl(struct roff_man *, int, struct tbl_node *);
1.340 schwarze 185: static int roff_als(ROFF_ARGS);
186: static int roff_block(ROFF_ARGS);
187: static int roff_block_text(ROFF_ARGS);
188: static int roff_block_sub(ROFF_ARGS);
1.364 schwarze 189: static int roff_break(ROFF_ARGS);
1.340 schwarze 190: static int roff_cblock(ROFF_ARGS);
191: static int roff_cc(ROFF_ARGS);
192: static int roff_ccond(struct roff *, int, int);
1.341 schwarze 193: static int roff_char(ROFF_ARGS);
1.340 schwarze 194: static int roff_cond(ROFF_ARGS);
1.375 schwarze 195: static int roff_cond_checkend(ROFF_ARGS);
1.340 schwarze 196: static int roff_cond_text(ROFF_ARGS);
197: static int roff_cond_sub(ROFF_ARGS);
198: static int roff_ds(ROFF_ARGS);
199: static int roff_ec(ROFF_ARGS);
200: static int roff_eo(ROFF_ARGS);
201: static int roff_eqndelim(struct roff *, struct buf *, int);
1.372 schwarze 202: static int roff_evalcond(struct roff *, int, char *, int *);
1.234 kristaps 203: static int roff_evalnum(struct roff *, int,
204: const char *, int *, int *, int);
205: static int roff_evalpar(struct roff *, int,
1.261 schwarze 206: const char *, int *, int *, int);
1.198 schwarze 207: static int roff_evalstrcond(const char *, int *);
1.355 schwarze 208: static int roff_expand(struct roff *, struct buf *,
209: int, int, char);
1.155 kristaps 210: static void roff_free1(struct roff *);
1.180 schwarze 211: static void roff_freereg(struct roffreg *);
1.167 kristaps 212: static void roff_freestr(struct roffkv *);
1.212 schwarze 213: static size_t roff_getname(struct roff *, char **, int, int);
1.261 schwarze 214: static int roff_getnum(const char *, int *, int *, int);
1.184 schwarze 215: static int roff_getop(const char *, int *, char *);
1.327 schwarze 216: static int roff_getregn(struct roff *,
217: const char *, size_t, char);
1.273 schwarze 218: static int roff_getregro(const struct roff *,
219: const char *name);
1.325 schwarze 220: static const char *roff_getstrn(struct roff *,
1.315 schwarze 221: const char *, size_t, int *);
1.271 schwarze 222: static int roff_hasregn(const struct roff *,
223: const char *, size_t);
1.340 schwarze 224: static int roff_insec(ROFF_ARGS);
225: static int roff_it(ROFF_ARGS);
226: static int roff_line_ignore(ROFF_ARGS);
1.265 schwarze 227: static void roff_man_alloc1(struct roff_man *);
228: static void roff_man_free1(struct roff_man *);
1.340 schwarze 229: static int roff_manyarg(ROFF_ARGS);
1.358 schwarze 230: static int roff_noarg(ROFF_ARGS);
1.340 schwarze 231: static int roff_nop(ROFF_ARGS);
232: static int roff_nr(ROFF_ARGS);
233: static int roff_onearg(ROFF_ARGS);
1.294 schwarze 234: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.214 schwarze 235: int, int);
1.340 schwarze 236: static int roff_parsetext(struct roff *, struct buf *,
1.305 schwarze 237: int, int *);
1.340 schwarze 238: static int roff_renamed(ROFF_ARGS);
239: static int roff_return(ROFF_ARGS);
240: static int roff_rm(ROFF_ARGS);
241: static int roff_rn(ROFF_ARGS);
242: static int roff_rr(ROFF_ARGS);
1.326 schwarze 243: static void roff_setregn(struct roff *, const char *,
1.327 schwarze 244: size_t, int, char, int);
1.94 kristaps 245: static void roff_setstr(struct roff *,
1.106 kristaps 246: const char *, const char *, int);
1.207 schwarze 247: static void roff_setstrn(struct roffkv **, const char *,
1.164 kristaps 248: size_t, const char *, size_t, int);
1.340 schwarze 249: static int roff_shift(ROFF_ARGS);
250: static int roff_so(ROFF_ARGS);
251: static int roff_tr(ROFF_ARGS);
252: static int roff_Dd(ROFF_ARGS);
253: static int roff_TE(ROFF_ARGS);
254: static int roff_TS(ROFF_ARGS);
255: static int roff_EQ(ROFF_ARGS);
256: static int roff_EN(ROFF_ARGS);
257: static int roff_T_(ROFF_ARGS);
258: static int roff_unsupp(ROFF_ARGS);
259: static int roff_userdef(ROFF_ARGS);
1.67 kristaps 260:
1.266 schwarze 261: /* --- constant data ------------------------------------------------------ */
262:
1.261 schwarze 263: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
264: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
265:
1.294 schwarze 266: const char *__roff_name[MAN_MAX + 1] = {
1.358 schwarze 267: "br", "ce", "fi", "ft",
268: "ll", "mc", "nf",
269: "po", "rj", "sp",
1.312 schwarze 270: "ta", "ti", NULL,
1.294 schwarze 271: "ab", "ad", "af", "aln",
272: "als", "am", "am1", "ami",
273: "ami1", "as", "as1", "asciify",
274: "backtrace", "bd", "bleedat", "blm",
275: "box", "boxa", "bp", "BP",
276: "break", "breakchar", "brnl", "brp",
1.305 schwarze 277: "brpnl", "c2", "cc",
1.294 schwarze 278: "cf", "cflags", "ch", "char",
279: "chop", "class", "close", "CL",
280: "color", "composite", "continue", "cp",
281: "cropat", "cs", "cu", "da",
282: "dch", "Dd", "de", "de1",
283: "defcolor", "dei", "dei1", "device",
284: "devicem", "di", "do", "ds",
285: "ds1", "dwh", "dt", "ec",
286: "ecr", "ecs", "el", "em",
287: "EN", "eo", "EP", "EQ",
288: "errprint", "ev", "evc", "ex",
289: "fallback", "fam", "fc", "fchar",
290: "fcolor", "fdeferlig", "feature", "fkern",
291: "fl", "flig", "fp", "fps",
292: "fschar", "fspacewidth", "fspecial", "ftr",
293: "fzoom", "gcolor", "hc", "hcode",
294: "hidechar", "hla", "hlm", "hpf",
295: "hpfa", "hpfcode", "hw", "hy",
296: "hylang", "hylen", "hym", "hypp",
297: "hys", "ie", "if", "ig",
298: "index", "it", "itc", "IX",
299: "kern", "kernafter", "kernbefore", "kernpair",
300: "lc", "lc_ctype", "lds", "length",
301: "letadj", "lf", "lg", "lhang",
302: "linetabs", "lnr", "lnrf", "lpfx",
1.304 schwarze 303: "ls", "lsm", "lt",
1.294 schwarze 304: "mediasize", "minss", "mk", "mso",
305: "na", "ne", "nh", "nhychar",
306: "nm", "nn", "nop", "nr",
307: "nrf", "nroff", "ns", "nx",
308: "open", "opena", "os", "output",
309: "padj", "papersize", "pc", "pev",
310: "pi", "PI", "pl", "pm",
1.312 schwarze 311: "pn", "pnr", "ps",
1.294 schwarze 312: "psbb", "pshape", "pso", "ptr",
313: "pvs", "rchar", "rd", "recursionlimit",
1.309 schwarze 314: "return", "rfschar", "rhang",
1.294 schwarze 315: "rm", "rn", "rnn", "rr",
316: "rs", "rt", "schar", "sentchar",
317: "shc", "shift", "sizes", "so",
318: "spacewidth", "special", "spreadwarn", "ss",
319: "sty", "substring", "sv", "sy",
1.300 schwarze 320: "T&", "tc", "TE",
1.301 schwarze 321: "TH", "tkf", "tl",
1.294 schwarze 322: "tm", "tm1", "tmc", "tr",
323: "track", "transchar", "trf", "trimat",
324: "trin", "trnt", "troff", "TS",
325: "uf", "ul", "unformat", "unwatch",
326: "unwatchn", "vpt", "vs", "warn",
327: "warnscale", "watch", "watchlength", "watchn",
328: "wh", "while", "write", "writec",
329: "writem", "xflag", ".", NULL,
1.306 schwarze 330: NULL, "text",
1.294 schwarze 331: "Dd", "Dt", "Os", "Sh",
332: "Ss", "Pp", "D1", "Dl",
333: "Bd", "Ed", "Bl", "El",
334: "It", "Ad", "An", "Ap",
335: "Ar", "Cd", "Cm", "Dv",
336: "Er", "Ev", "Ex", "Fa",
337: "Fd", "Fl", "Fn", "Ft",
338: "Ic", "In", "Li", "Nd",
339: "Nm", "Op", "Ot", "Pa",
340: "Rv", "St", "Va", "Vt",
341: "Xr", "%A", "%B", "%D",
342: "%I", "%J", "%N", "%O",
343: "%P", "%R", "%T", "%V",
344: "Ac", "Ao", "Aq", "At",
345: "Bc", "Bf", "Bo", "Bq",
346: "Bsx", "Bx", "Db", "Dc",
347: "Do", "Dq", "Ec", "Ef",
348: "Em", "Eo", "Fx", "Ms",
349: "No", "Ns", "Nx", "Ox",
350: "Pc", "Pf", "Po", "Pq",
351: "Qc", "Ql", "Qo", "Qq",
352: "Re", "Rs", "Sc", "So",
353: "Sq", "Sm", "Sx", "Sy",
354: "Tn", "Ux", "Xc", "Xo",
355: "Fo", "Fc", "Oo", "Oc",
356: "Bk", "Ek", "Bt", "Hf",
357: "Fr", "Ud", "Lb", "Lp",
358: "Lk", "Mt", "Brq", "Bro",
359: "Brc", "%C", "Es", "En",
1.299 schwarze 360: "Dx", "%Q", "%U", "Ta",
1.369 schwarze 361: "Tg", NULL,
1.294 schwarze 362: "TH", "SH", "SS", "TP",
1.332 schwarze 363: "TQ",
1.294 schwarze 364: "LP", "PP", "P", "IP",
365: "HP", "SM", "SB", "BI",
366: "IB", "BR", "RB", "R",
367: "B", "I", "IR", "RI",
368: "RE", "RS", "DT", "UC",
1.297 schwarze 369: "PD", "AT", "in",
1.333 schwarze 370: "SY", "YS", "OP",
371: "EX", "EE", "UR",
1.317 schwarze 372: "UE", "MT", "ME", NULL
1.294 schwarze 373: };
374: const char *const *roff_name = __roff_name;
375:
376: static struct roffmac roffs[TOKEN_NONE] = {
1.358 schwarze 377: { roff_noarg, NULL, NULL, 0 }, /* br */
1.305 schwarze 378: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.358 schwarze 379: { roff_noarg, NULL, NULL, 0 }, /* fi */
1.297 schwarze 380: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.298 schwarze 381: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.304 schwarze 382: { roff_onearg, NULL, NULL, 0 }, /* mc */
1.358 schwarze 383: { roff_noarg, NULL, NULL, 0 }, /* nf */
1.312 schwarze 384: { roff_onearg, NULL, NULL, 0 }, /* po */
1.309 schwarze 385: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.299 schwarze 386: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.300 schwarze 387: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.301 schwarze 388: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.296 schwarze 389: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.295 schwarze 390: { roff_unsupp, NULL, NULL, 0 }, /* ab */
391: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
392: { roff_line_ignore, NULL, NULL, 0 }, /* af */
393: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.311 schwarze 394: { roff_als, NULL, NULL, 0 }, /* als */
1.295 schwarze 395: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
396: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
397: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
398: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
399: { roff_ds, NULL, NULL, 0 }, /* as */
400: { roff_ds, NULL, NULL, 0 }, /* as1 */
401: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
402: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
403: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
404: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
405: { roff_unsupp, NULL, NULL, 0 }, /* blm */
406: { roff_unsupp, NULL, NULL, 0 }, /* box */
407: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
408: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
409: { roff_unsupp, NULL, NULL, 0 }, /* BP */
1.364 schwarze 410: { roff_break, NULL, NULL, 0 }, /* break */
1.295 schwarze 411: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
412: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.358 schwarze 413: { roff_noarg, NULL, NULL, 0 }, /* brp */
1.295 schwarze 414: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
415: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
416: { roff_cc, NULL, NULL, 0 }, /* cc */
417: { roff_insec, NULL, NULL, 0 }, /* cf */
418: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
419: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
1.341 schwarze 420: { roff_char, NULL, NULL, 0 }, /* char */
1.295 schwarze 421: { roff_unsupp, NULL, NULL, 0 }, /* chop */
422: { roff_line_ignore, NULL, NULL, 0 }, /* class */
423: { roff_insec, NULL, NULL, 0 }, /* close */
424: { roff_unsupp, NULL, NULL, 0 }, /* CL */
425: { roff_line_ignore, NULL, NULL, 0 }, /* color */
426: { roff_unsupp, NULL, NULL, 0 }, /* composite */
427: { roff_unsupp, NULL, NULL, 0 }, /* continue */
428: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
429: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
430: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
431: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
432: { roff_unsupp, NULL, NULL, 0 }, /* da */
433: { roff_unsupp, NULL, NULL, 0 }, /* dch */
434: { roff_Dd, NULL, NULL, 0 }, /* Dd */
435: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
436: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
437: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
438: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
439: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
440: { roff_unsupp, NULL, NULL, 0 }, /* device */
441: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
442: { roff_unsupp, NULL, NULL, 0 }, /* di */
443: { roff_unsupp, NULL, NULL, 0 }, /* do */
444: { roff_ds, NULL, NULL, 0 }, /* ds */
445: { roff_ds, NULL, NULL, 0 }, /* ds1 */
446: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
447: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.303 schwarze 448: { roff_ec, NULL, NULL, 0 }, /* ec */
1.295 schwarze 449: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
450: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
451: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
452: { roff_unsupp, NULL, NULL, 0 }, /* em */
453: { roff_EN, NULL, NULL, 0 }, /* EN */
1.303 schwarze 454: { roff_eo, NULL, NULL, 0 }, /* eo */
1.295 schwarze 455: { roff_unsupp, NULL, NULL, 0 }, /* EP */
456: { roff_EQ, NULL, NULL, 0 }, /* EQ */
457: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
458: { roff_unsupp, NULL, NULL, 0 }, /* ev */
459: { roff_unsupp, NULL, NULL, 0 }, /* evc */
460: { roff_unsupp, NULL, NULL, 0 }, /* ex */
461: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
462: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
463: { roff_unsupp, NULL, NULL, 0 }, /* fc */
464: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
465: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
466: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
467: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
468: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
469: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
470: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
471: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
472: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
473: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
474: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
475: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
476: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
477: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
478: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
479: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
480: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
481: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
482: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
483: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
484: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
485: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
486: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
487: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
488: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
489: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
490: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
491: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
492: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
493: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
494: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
495: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
496: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
497: { roff_unsupp, NULL, NULL, 0 }, /* index */
498: { roff_it, NULL, NULL, 0 }, /* it */
499: { roff_unsupp, NULL, NULL, 0 }, /* itc */
500: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
501: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
502: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
503: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
504: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
505: { roff_unsupp, NULL, NULL, 0 }, /* lc */
506: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
507: { roff_unsupp, NULL, NULL, 0 }, /* lds */
508: { roff_unsupp, NULL, NULL, 0 }, /* length */
509: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
510: { roff_insec, NULL, NULL, 0 }, /* lf */
511: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
512: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
513: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
514: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
515: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
516: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
517: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
518: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
519: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
520: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
521: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
522: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
523: { roff_insec, NULL, NULL, 0 }, /* mso */
524: { roff_line_ignore, NULL, NULL, 0 }, /* na */
525: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
526: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
527: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
528: { roff_unsupp, NULL, NULL, 0 }, /* nm */
529: { roff_unsupp, NULL, NULL, 0 }, /* nn */
1.330 schwarze 530: { roff_nop, NULL, NULL, 0 }, /* nop */
1.295 schwarze 531: { roff_nr, NULL, NULL, 0 }, /* nr */
532: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
533: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
534: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
535: { roff_insec, NULL, NULL, 0 }, /* nx */
536: { roff_insec, NULL, NULL, 0 }, /* open */
537: { roff_insec, NULL, NULL, 0 }, /* opena */
538: { roff_line_ignore, NULL, NULL, 0 }, /* os */
539: { roff_unsupp, NULL, NULL, 0 }, /* output */
540: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
541: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
542: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
543: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
544: { roff_insec, NULL, NULL, 0 }, /* pi */
545: { roff_unsupp, NULL, NULL, 0 }, /* PI */
546: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
547: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
548: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
549: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
550: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
551: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
552: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
553: { roff_insec, NULL, NULL, 0 }, /* pso */
554: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
555: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
556: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
557: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
558: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
1.339 schwarze 559: { roff_return, NULL, NULL, 0 }, /* return */
1.295 schwarze 560: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
561: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
562: { roff_rm, NULL, NULL, 0 }, /* rm */
1.306 schwarze 563: { roff_rn, NULL, NULL, 0 }, /* rn */
1.295 schwarze 564: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
565: { roff_rr, NULL, NULL, 0 }, /* rr */
566: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
567: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
568: { roff_unsupp, NULL, NULL, 0 }, /* schar */
569: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
570: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
1.339 schwarze 571: { roff_shift, NULL, NULL, 0 }, /* shift */
1.295 schwarze 572: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
573: { roff_so, NULL, NULL, 0 }, /* so */
574: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
575: { roff_line_ignore, NULL, NULL, 0 }, /* special */
576: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
577: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
578: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
579: { roff_unsupp, NULL, NULL, 0 }, /* substring */
580: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
581: { roff_insec, NULL, NULL, 0 }, /* sy */
582: { roff_T_, NULL, NULL, 0 }, /* T& */
583: { roff_unsupp, NULL, NULL, 0 }, /* tc */
584: { roff_TE, NULL, NULL, 0 }, /* TE */
1.315 schwarze 585: { roff_Dd, NULL, NULL, 0 }, /* TH */
1.295 schwarze 586: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
587: { roff_unsupp, NULL, NULL, 0 }, /* tl */
588: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
589: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
590: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
591: { roff_tr, NULL, NULL, 0 }, /* tr */
592: { roff_line_ignore, NULL, NULL, 0 }, /* track */
593: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
594: { roff_insec, NULL, NULL, 0 }, /* trf */
595: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
596: { roff_unsupp, NULL, NULL, 0 }, /* trin */
597: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
598: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
599: { roff_TS, NULL, NULL, 0 }, /* TS */
600: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
601: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
602: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
603: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
604: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
605: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
606: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
607: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
608: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
609: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
610: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
611: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
612: { roff_unsupp, NULL, NULL, 0 }, /* wh */
1.340 schwarze 613: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /*while*/
1.295 schwarze 614: { roff_insec, NULL, NULL, 0 }, /* write */
615: { roff_insec, NULL, NULL, 0 }, /* writec */
616: { roff_insec, NULL, NULL, 0 }, /* writem */
617: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
618: { roff_cblock, NULL, NULL, 0 }, /* . */
1.306 schwarze 619: { roff_renamed, NULL, NULL, 0 },
1.295 schwarze 620: { roff_userdef, NULL, NULL, 0 }
1.67 kristaps 621: };
622:
1.141 kristaps 623: /* Array of injected predefined strings. */
624: #define PREDEFS_MAX 38
625: static const struct predef predefs[PREDEFS_MAX] = {
626: #include "predefs.in"
627: };
628:
1.305 schwarze 629: static int roffce_lines; /* number of input lines to center */
630: static struct roff_node *roffce_node; /* active request */
1.178 schwarze 631: static int roffit_lines; /* number of lines to delay */
632: static char *roffit_macro; /* nil-terminated macro line */
633:
1.207 schwarze 634:
1.266 schwarze 635: /* --- request table ------------------------------------------------------ */
636:
1.295 schwarze 637: struct ohash *
638: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.85 kristaps 639: {
1.295 schwarze 640: struct ohash *htab;
641: struct roffreq *req;
642: enum roff_tok tok;
643: size_t sz;
644: unsigned int slot;
1.85 kristaps 645:
1.295 schwarze 646: htab = mandoc_malloc(sizeof(*htab));
647: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.85 kristaps 648:
1.295 schwarze 649: for (tok = mintok; tok < maxtok; tok++) {
1.296 schwarze 650: if (roff_name[tok] == NULL)
651: continue;
1.295 schwarze 652: sz = strlen(roff_name[tok]);
653: req = mandoc_malloc(sizeof(*req) + sz + 1);
654: req->tok = tok;
655: memcpy(req->name, roff_name[tok], sz + 1);
656: slot = ohash_qlookup(htab, req->name);
657: ohash_insert(htab, slot, req);
1.85 kristaps 658: }
1.295 schwarze 659: return htab;
1.85 kristaps 660: }
661:
1.295 schwarze 662: void
663: roffhash_free(struct ohash *htab)
1.67 kristaps 664: {
1.295 schwarze 665: struct roffreq *req;
666: unsigned int slot;
1.67 kristaps 667:
1.295 schwarze 668: if (htab == NULL)
669: return;
670: for (req = ohash_first(htab, &slot); req != NULL;
671: req = ohash_next(htab, &slot))
672: free(req);
673: ohash_delete(htab);
674: free(htab);
675: }
676:
677: enum roff_tok
678: roffhash_find(struct ohash *htab, const char *name, size_t sz)
679: {
680: struct roffreq *req;
681: const char *end;
682:
683: if (sz) {
684: end = name + sz;
685: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
686: } else
687: req = ohash_find(htab, ohash_qlookup(htab, name));
688: return req == NULL ? TOKEN_NONE : req->tok;
1.67 kristaps 689: }
690:
1.266 schwarze 691: /* --- stack of request blocks -------------------------------------------- */
692:
1.67 kristaps 693: /*
694: * Pop the current node off of the stack of roff instructions currently
1.364 schwarze 695: * pending. Return 1 if it is a loop or 0 otherwise.
1.67 kristaps 696: */
1.340 schwarze 697: static int
1.67 kristaps 698: roffnode_pop(struct roff *r)
699: {
700: struct roffnode *p;
1.340 schwarze 701: int inloop;
1.67 kristaps 702:
1.207 schwarze 703: p = r->last;
1.340 schwarze 704: inloop = p->tok == ROFF_while;
705: r->last = p->parent;
1.106 kristaps 706: free(p->name);
707: free(p->end);
1.67 kristaps 708: free(p);
1.340 schwarze 709: return inloop;
1.67 kristaps 710: }
711:
712: /*
713: * Push a roff node onto the instruction stack. This must later be
714: * removed with roffnode_pop().
715: */
1.98 schwarze 716: static void
1.294 schwarze 717: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.106 kristaps 718: int line, int col)
1.67 kristaps 719: {
720: struct roffnode *p;
721:
1.98 schwarze 722: p = mandoc_calloc(1, sizeof(struct roffnode));
1.67 kristaps 723: p->tok = tok;
1.106 kristaps 724: if (name)
725: p->name = mandoc_strdup(name);
1.67 kristaps 726: p->parent = r->last;
727: p->line = line;
728: p->col = col;
1.198 schwarze 729: p->rule = p->parent ? p->parent->rule : 0;
1.67 kristaps 730:
731: r->last = p;
732: }
733:
1.266 schwarze 734: /* --- roff parser state data management ---------------------------------- */
735:
1.67 kristaps 736: static void
737: roff_free1(struct roff *r)
738: {
1.167 kristaps 739: int i;
1.67 kristaps 740:
1.346 schwarze 741: tbl_free(r->first_tbl);
1.113 kristaps 742: r->first_tbl = r->last_tbl = r->tbl = NULL;
743:
1.347 schwarze 744: eqn_free(r->last_eqn);
1.319 schwarze 745: r->last_eqn = r->eqn = NULL;
1.125 kristaps 746:
1.339 schwarze 747: while (r->mstackpos >= 0)
748: roff_userret(r);
749:
1.67 kristaps 750: while (r->last)
751: roffnode_pop(r);
1.109 kristaps 752:
1.223 schwarze 753: free (r->rstack);
754: r->rstack = NULL;
755: r->rstacksz = 0;
756: r->rstackpos = -1;
757:
758: roff_freereg(r->regtab);
759: r->regtab = NULL;
760:
1.167 kristaps 761: roff_freestr(r->strtab);
1.306 schwarze 762: roff_freestr(r->rentab);
1.167 kristaps 763: roff_freestr(r->xmbtab);
1.306 schwarze 764: r->strtab = r->rentab = r->xmbtab = NULL;
1.167 kristaps 765:
766: if (r->xtab)
767: for (i = 0; i < 128; i++)
768: free(r->xtab[i].p);
769: free(r->xtab);
770: r->xtab = NULL;
1.67 kristaps 771: }
772:
773: void
774: roff_reset(struct roff *r)
775: {
776: roff_free1(r);
1.367 schwarze 777: r->options |= MPARSE_COMMENT;
1.227 schwarze 778: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.303 schwarze 779: r->control = '\0';
780: r->escape = '\\';
1.307 schwarze 781: roffce_lines = 0;
782: roffce_node = NULL;
783: roffit_lines = 0;
784: roffit_macro = NULL;
1.67 kristaps 785: }
786:
787: void
788: roff_free(struct roff *r)
789: {
1.366 schwarze 790: int i;
1.339 schwarze 791:
1.67 kristaps 792: roff_free1(r);
1.339 schwarze 793: for (i = 0; i < r->mstacksz; i++)
794: free(r->mstack[i].argv);
795: free(r->mstack);
1.295 schwarze 796: roffhash_free(r->reqtab);
1.67 kristaps 797: free(r);
798: }
799:
800: struct roff *
1.351 schwarze 801: roff_alloc(int options)
1.67 kristaps 802: {
803: struct roff *r;
804:
1.98 schwarze 805: r = mandoc_calloc(1, sizeof(struct roff));
1.328 schwarze 806: r->reqtab = roffhash_alloc(0, ROFF_RENAMED);
1.367 schwarze 807: r->options = options | MPARSE_COMMENT;
1.227 schwarze 808: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.339 schwarze 809: r->mstackpos = -1;
1.82 kristaps 810: r->rstackpos = -1;
1.303 schwarze 811: r->escape = '\\';
1.277 schwarze 812: return r;
1.265 schwarze 813: }
814:
1.266 schwarze 815: /* --- syntax tree state data management ---------------------------------- */
816:
1.265 schwarze 817: static void
818: roff_man_free1(struct roff_man *man)
819: {
1.356 schwarze 820: if (man->meta.first != NULL)
821: roff_node_delete(man, man->meta.first);
1.265 schwarze 822: free(man->meta.msec);
823: free(man->meta.vol);
824: free(man->meta.os);
825: free(man->meta.arch);
826: free(man->meta.title);
827: free(man->meta.name);
828: free(man->meta.date);
1.356 schwarze 829: free(man->meta.sodest);
1.265 schwarze 830: }
831:
1.357 schwarze 832: void
833: roff_state_reset(struct roff_man *man)
834: {
835: man->last = man->meta.first;
836: man->last_es = NULL;
837: man->flags = 0;
838: man->lastsec = man->lastnamed = SEC_NONE;
839: man->next = ROFF_NEXT_CHILD;
840: roff_setreg(man->roff, "nS", 0, '=');
841: }
842:
1.265 schwarze 843: static void
844: roff_man_alloc1(struct roff_man *man)
845: {
846: memset(&man->meta, 0, sizeof(man->meta));
1.356 schwarze 847: man->meta.first = mandoc_calloc(1, sizeof(*man->meta.first));
848: man->meta.first->type = ROFFT_ROOT;
849: man->meta.macroset = MACROSET_NONE;
1.357 schwarze 850: roff_state_reset(man);
1.265 schwarze 851: }
852:
853: void
854: roff_man_reset(struct roff_man *man)
855: {
856: roff_man_free1(man);
857: roff_man_alloc1(man);
858: }
859:
860: void
861: roff_man_free(struct roff_man *man)
862: {
863: roff_man_free1(man);
864: free(man);
865: }
866:
867: struct roff_man *
1.351 schwarze 868: roff_man_alloc(struct roff *roff, const char *os_s, int quick)
1.265 schwarze 869: {
870: struct roff_man *man;
871:
872: man = mandoc_calloc(1, sizeof(*man));
873: man->roff = roff;
1.316 schwarze 874: man->os_s = os_s;
1.265 schwarze 875: man->quick = quick;
876: roff_man_alloc1(man);
1.296 schwarze 877: roff->man = man;
1.277 schwarze 878: return man;
1.67 kristaps 879: }
880:
1.266 schwarze 881: /* --- syntax tree handling ----------------------------------------------- */
882:
883: struct roff_node *
884: roff_node_alloc(struct roff_man *man, int line, int pos,
885: enum roff_type type, int tok)
886: {
887: struct roff_node *n;
888:
889: n = mandoc_calloc(1, sizeof(*n));
890: n->line = line;
891: n->pos = pos;
892: n->tok = tok;
893: n->type = type;
894: n->sec = man->lastsec;
895:
896: if (man->flags & MDOC_SYNOPSIS)
1.285 schwarze 897: n->flags |= NODE_SYNPRETTY;
1.266 schwarze 898: else
1.285 schwarze 899: n->flags &= ~NODE_SYNPRETTY;
1.360 schwarze 900: if ((man->flags & (ROFF_NOFILL | ROFF_NONOFILL)) == ROFF_NOFILL)
1.359 schwarze 901: n->flags |= NODE_NOFILL;
902: else
903: n->flags &= ~NODE_NOFILL;
1.266 schwarze 904: if (man->flags & MDOC_NEWLINE)
1.285 schwarze 905: n->flags |= NODE_LINE;
1.266 schwarze 906: man->flags &= ~MDOC_NEWLINE;
907:
1.277 schwarze 908: return n;
1.266 schwarze 909: }
910:
911: void
912: roff_node_append(struct roff_man *man, struct roff_node *n)
913: {
914:
915: switch (man->next) {
916: case ROFF_NEXT_SIBLING:
1.281 schwarze 917: if (man->last->next != NULL) {
918: n->next = man->last->next;
919: man->last->next->prev = n;
920: } else
921: man->last->parent->last = n;
1.266 schwarze 922: man->last->next = n;
923: n->prev = man->last;
924: n->parent = man->last->parent;
925: break;
926: case ROFF_NEXT_CHILD:
1.287 schwarze 927: if (man->last->child != NULL) {
928: n->next = man->last->child;
929: man->last->child->prev = n;
930: } else
931: man->last->last = n;
1.266 schwarze 932: man->last->child = n;
933: n->parent = man->last;
934: break;
935: default:
936: abort();
937: }
1.282 schwarze 938: man->last = n;
1.266 schwarze 939:
940: switch (n->type) {
941: case ROFFT_HEAD:
942: n->parent->head = n;
943: break;
944: case ROFFT_BODY:
1.282 schwarze 945: if (n->end != ENDBODY_NOT)
946: return;
1.266 schwarze 947: n->parent->body = n;
948: break;
949: case ROFFT_TAIL:
950: n->parent->tail = n;
951: break;
952: default:
1.282 schwarze 953: return;
1.266 schwarze 954: }
1.282 schwarze 955:
956: /*
957: * Copy over the normalised-data pointer of our parent. Not
958: * everybody has one, but copying a null pointer is fine.
959: */
960:
961: n->norm = n->parent->norm;
962: assert(n->parent->type == ROFFT_BLOCK);
1.266 schwarze 963: }
964:
1.267 schwarze 965: void
966: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
967: {
968: struct roff_node *n;
969:
970: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
971: n->string = roff_strdup(man->roff, word);
972: roff_node_append(man, n);
1.286 schwarze 973: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 974: man->next = ROFF_NEXT_SIBLING;
975: }
976:
977: void
978: roff_word_append(struct roff_man *man, const char *word)
979: {
980: struct roff_node *n;
981: char *addstr, *newstr;
982:
983: n = man->last;
984: addstr = roff_strdup(man->roff, word);
985: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
986: free(addstr);
987: free(n->string);
988: n->string = newstr;
989: man->next = ROFF_NEXT_SIBLING;
1.268 schwarze 990: }
991:
992: void
993: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
994: {
995: struct roff_node *n;
996:
997: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
998: roff_node_append(man, n);
999: man->next = ROFF_NEXT_CHILD;
1000: }
1001:
1002: struct roff_node *
1003: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
1004: {
1005: struct roff_node *n;
1006:
1007: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
1008: roff_node_append(man, n);
1009: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1010: return n;
1.267 schwarze 1011: }
1012:
1.266 schwarze 1013: struct roff_node *
1014: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
1015: {
1016: struct roff_node *n;
1017:
1018: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
1019: roff_node_append(man, n);
1020: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1021: return n;
1.266 schwarze 1022: }
1023:
1024: struct roff_node *
1025: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1026: {
1027: struct roff_node *n;
1028:
1029: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1030: roff_node_append(man, n);
1031: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1032: return n;
1.267 schwarze 1033: }
1034:
1.321 schwarze 1035: static void
1.346 schwarze 1036: roff_addtbl(struct roff_man *man, int line, struct tbl_node *tbl)
1.267 schwarze 1037: {
1038: struct roff_node *n;
1.346 schwarze 1039: struct tbl_span *span;
1.267 schwarze 1040:
1.356 schwarze 1041: if (man->meta.macroset == MACROSET_MAN)
1.302 schwarze 1042: man_breakscope(man, ROFF_TS);
1.321 schwarze 1043: while ((span = tbl_span(tbl)) != NULL) {
1.346 schwarze 1044: n = roff_node_alloc(man, line, 0, ROFFT_TBL, TOKEN_NONE);
1.321 schwarze 1045: n->span = span;
1046: roff_node_append(man, n);
1047: n->flags |= NODE_VALID | NODE_ENDED;
1048: man->next = ROFF_NEXT_SIBLING;
1049: }
1.266 schwarze 1050: }
1051:
1052: void
1053: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1054: {
1055:
1056: /* Adjust siblings. */
1057:
1058: if (n->prev)
1059: n->prev->next = n->next;
1060: if (n->next)
1061: n->next->prev = n->prev;
1062:
1063: /* Adjust parent. */
1064:
1065: if (n->parent != NULL) {
1066: if (n->parent->child == n)
1067: n->parent->child = n->next;
1068: if (n->parent->last == n)
1069: n->parent->last = n->prev;
1070: }
1071:
1072: /* Adjust parse point. */
1073:
1074: if (man == NULL)
1075: return;
1076: if (man->last == n) {
1077: if (n->prev == NULL) {
1078: man->last = n->parent;
1079: man->next = ROFF_NEXT_CHILD;
1080: } else {
1081: man->last = n->prev;
1082: man->next = ROFF_NEXT_SIBLING;
1083: }
1084: }
1.356 schwarze 1085: if (man->meta.first == n)
1086: man->meta.first = NULL;
1.344 schwarze 1087: }
1088:
1089: void
1090: roff_node_relink(struct roff_man *man, struct roff_node *n)
1091: {
1092: roff_node_unlink(man, n);
1093: n->prev = n->next = NULL;
1094: roff_node_append(man, n);
1.266 schwarze 1095: }
1096:
1097: void
1098: roff_node_free(struct roff_node *n)
1099: {
1100:
1101: if (n->args != NULL)
1102: mdoc_argv_free(n->args);
1103: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1104: free(n->norm);
1.347 schwarze 1105: eqn_box_free(n->eqn);
1.266 schwarze 1106: free(n->string);
1.374 schwarze 1107: free(n->tag);
1.266 schwarze 1108: free(n);
1109: }
1110:
1111: void
1112: roff_node_delete(struct roff_man *man, struct roff_node *n)
1113: {
1114:
1115: while (n->child != NULL)
1116: roff_node_delete(man, n->child);
1117: roff_node_unlink(man, n);
1118: roff_node_free(n);
1.370 schwarze 1119: }
1120:
1121: int
1122: roff_node_transparent(struct roff_node *n)
1123: {
1124: if (n == NULL)
1125: return 0;
1126: if (n->type == ROFFT_COMMENT || n->flags & NODE_NOPRT)
1127: return 1;
1.373 schwarze 1128: return roff_tok_transparent(n->tok);
1129: }
1130:
1131: int
1132: roff_tok_transparent(enum roff_tok tok)
1133: {
1134: switch (tok) {
1.370 schwarze 1135: case ROFF_ft:
1136: case ROFF_ll:
1137: case ROFF_mc:
1138: case ROFF_po:
1139: case ROFF_ta:
1140: case MDOC_Db:
1141: case MDOC_Es:
1142: case MDOC_Sm:
1143: case MDOC_Tg:
1144: case MAN_DT:
1145: case MAN_UC:
1146: case MAN_PD:
1147: case MAN_AT:
1148: return 1;
1149: default:
1150: return 0;
1151: }
1152: }
1153:
1154: struct roff_node *
1155: roff_node_child(struct roff_node *n)
1156: {
1157: for (n = n->child; roff_node_transparent(n); n = n->next)
1158: continue;
1159: return n;
1160: }
1161:
1162: struct roff_node *
1163: roff_node_prev(struct roff_node *n)
1164: {
1165: do {
1166: n = n->prev;
1167: } while (roff_node_transparent(n));
1168: return n;
1169: }
1170:
1171: struct roff_node *
1172: roff_node_next(struct roff_node *n)
1173: {
1174: do {
1175: n = n->next;
1176: } while (roff_node_transparent(n));
1177: return n;
1.269 schwarze 1178: }
1179:
1180: void
1181: deroff(char **dest, const struct roff_node *n)
1182: {
1183: char *cp;
1184: size_t sz;
1185:
1.371 schwarze 1186: if (n->string == NULL) {
1.269 schwarze 1187: for (n = n->child; n != NULL; n = n->next)
1188: deroff(dest, n);
1189: return;
1190: }
1191:
1.288 schwarze 1192: /* Skip leading whitespace. */
1.269 schwarze 1193:
1.288 schwarze 1194: for (cp = n->string; *cp != '\0'; cp++) {
1.289 schwarze 1195: if (cp[0] == '\\' && cp[1] != '\0' &&
1196: strchr(" %&0^|~", cp[1]) != NULL)
1.269 schwarze 1197: cp++;
1.288 schwarze 1198: else if ( ! isspace((unsigned char)*cp))
1.269 schwarze 1199: break;
1200: }
1201:
1.289 schwarze 1202: /* Skip trailing backslash. */
1203:
1204: sz = strlen(cp);
1.290 schwarze 1205: if (sz > 0 && cp[sz - 1] == '\\')
1.289 schwarze 1206: sz--;
1207:
1.269 schwarze 1208: /* Skip trailing whitespace. */
1209:
1.289 schwarze 1210: for (; sz; sz--)
1.269 schwarze 1211: if ( ! isspace((unsigned char)cp[sz-1]))
1212: break;
1213:
1214: /* Skip empty strings. */
1215:
1216: if (sz == 0)
1217: return;
1218:
1219: if (*dest == NULL) {
1220: *dest = mandoc_strndup(cp, sz);
1221: return;
1222: }
1223:
1224: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1225: free(*dest);
1226: *dest = cp;
1.266 schwarze 1227: }
1228:
1229: /* --- main functions of the roff parser ---------------------------------- */
1230:
1.94 kristaps 1231: /*
1.355 schwarze 1232: * In the current line, expand escape sequences that produce parsable
1233: * input text. Also check the syntax of the remaining escape sequences,
1234: * which typically produce output glyphs or change formatter state.
1.154 kristaps 1235: */
1.340 schwarze 1236: static int
1.355 schwarze 1237: roff_expand(struct roff *r, struct buf *buf, int ln, int pos, char newesc)
1.94 kristaps 1238: {
1.339 schwarze 1239: struct mctx *ctx; /* current macro call context */
1.208 schwarze 1240: char ubuf[24]; /* buffer to print the number */
1.328 schwarze 1241: struct roff_node *n; /* used for header comments */
1.205 schwarze 1242: const char *start; /* start of the string to process */
1.209 schwarze 1243: char *stesc; /* start of an escape sequence ('\\') */
1.352 schwarze 1244: const char *esct; /* type of esccape sequence */
1.328 schwarze 1245: char *ep; /* end of comment string */
1.108 schwarze 1246: const char *stnam; /* start of the name, after "[(*" */
1247: const char *cp; /* end of the name, e.g. before ']' */
1248: const char *res; /* the string to be substituted */
1.238 schwarze 1249: char *nbuf; /* new buffer to copy buf->buf to */
1.181 schwarze 1250: size_t maxl; /* expected length of the escape name */
1251: size_t naml; /* actual length of the escape name */
1.339 schwarze 1252: size_t asz; /* length of the replacement */
1253: size_t rsz; /* length of the rest of the string */
1.237 schwarze 1254: int inaml; /* length returned from mandoc_escape() */
1.181 schwarze 1255: int expand_count; /* to avoid infinite loops */
1.206 schwarze 1256: int npos; /* position in numeric expression */
1.218 schwarze 1257: int arg_complete; /* argument not interrupted by eol */
1.339 schwarze 1258: int quote_args; /* true for \\$@, false for \\$* */
1.303 schwarze 1259: int done; /* no more input available */
1.315 schwarze 1260: int deftype; /* type of definition to paste */
1.323 schwarze 1261: int rcsid; /* kind of RCS id seen */
1.352 schwarze 1262: enum mandocerr err; /* for escape sequence problems */
1.327 schwarze 1263: char sign; /* increment number register */
1.206 schwarze 1264: char term; /* character terminating the escape */
1.94 kristaps 1265:
1.303 schwarze 1266: /* Search forward for comments. */
1267:
1268: done = 0;
1269: start = buf->buf + pos;
1270: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1.355 schwarze 1271: if (stesc[0] != newesc || stesc[1] == '\0')
1.303 schwarze 1272: continue;
1273: stesc++;
1274: if (*stesc != '"' && *stesc != '#')
1275: continue;
1.313 schwarze 1276:
1277: /* Comment found, look for RCS id. */
1278:
1.323 schwarze 1279: rcsid = 0;
1.313 schwarze 1280: if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
1.323 schwarze 1281: rcsid = 1 << MANDOC_OS_OPENBSD;
1.313 schwarze 1282: cp += 8;
1283: } else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
1.323 schwarze 1284: rcsid = 1 << MANDOC_OS_NETBSD;
1.313 schwarze 1285: cp += 7;
1286: }
1287: if (cp != NULL &&
1288: isalnum((unsigned char)*cp) == 0 &&
1.314 schwarze 1289: strchr(cp, '$') != NULL) {
1.323 schwarze 1290: if (r->man->meta.rcsids & rcsid)
1.350 schwarze 1291: mandoc_msg(MANDOCERR_RCS_REP, ln,
1292: (int)(stesc - buf->buf) + 1,
1293: "%s", stesc + 1);
1.323 schwarze 1294: r->man->meta.rcsids |= rcsid;
1.314 schwarze 1295: }
1.313 schwarze 1296:
1297: /* Handle trailing whitespace. */
1298:
1.328 schwarze 1299: ep = strchr(stesc--, '\0') - 1;
1300: if (*ep == '\n') {
1.303 schwarze 1301: done = 1;
1.328 schwarze 1302: ep--;
1.303 schwarze 1303: }
1.328 schwarze 1304: if (*ep == ' ' || *ep == '\t')
1.350 schwarze 1305: mandoc_msg(MANDOCERR_SPACE_EOL,
1306: ln, (int)(ep - buf->buf), NULL);
1.328 schwarze 1307:
1308: /*
1309: * Save comments preceding the title macro
1310: * in the syntax tree.
1311: */
1312:
1.367 schwarze 1313: if (newesc != ASCII_ESC && r->options & MPARSE_COMMENT) {
1.328 schwarze 1314: while (*ep == ' ' || *ep == '\t')
1315: ep--;
1316: ep[1] = '\0';
1317: n = roff_node_alloc(r->man,
1318: ln, stesc + 1 - buf->buf,
1319: ROFFT_COMMENT, TOKEN_NONE);
1320: n->string = mandoc_strdup(stesc + 2);
1321: roff_node_append(r->man, n);
1322: n->flags |= NODE_VALID | NODE_ENDED;
1323: r->man->next = ROFF_NEXT_SIBLING;
1324: }
1325:
1.334 schwarze 1326: /* Line continuation with comment. */
1327:
1328: if (stesc[1] == '#') {
1329: *stesc = '\0';
1.340 schwarze 1330: return ROFF_IGN | ROFF_APPEND;
1.334 schwarze 1331: }
1332:
1333: /* Discard normal comments. */
1.328 schwarze 1334:
1.335 schwarze 1335: while (stesc > start && stesc[-1] == ' ' &&
1336: (stesc == start + 1 || stesc[-2] != '\\'))
1.303 schwarze 1337: stesc--;
1338: *stesc = '\0';
1339: break;
1340: }
1341: if (stesc == start)
1342: return ROFF_CONT;
1343: stesc--;
1344:
1345: /* Notice the end of the input. */
1346:
1347: if (*stesc == '\n') {
1348: *stesc-- = '\0';
1349: done = 1;
1350: }
1351:
1.170 schwarze 1352: expand_count = 0;
1.303 schwarze 1353: while (stesc >= start) {
1.355 schwarze 1354: if (*stesc != newesc) {
1.170 schwarze 1355:
1.355 schwarze 1356: /*
1357: * If we have a non-standard escape character,
1358: * escape literal backslashes because all
1359: * processing in subsequent functions uses
1360: * the standard escaping rules.
1361: */
1.205 schwarze 1362:
1.355 schwarze 1363: if (newesc != ASCII_ESC && *stesc == '\\') {
1.303 schwarze 1364: *stesc = '\0';
1365: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1366: buf->buf, stesc + 1) + 1;
1367: start = nbuf + pos;
1368: stesc = nbuf + (stesc - buf->buf);
1369: free(buf->buf);
1370: buf->buf = nbuf;
1371: }
1.355 schwarze 1372:
1373: /* Search backwards for the next escape. */
1374:
1.303 schwarze 1375: stesc--;
1.205 schwarze 1376: continue;
1.303 schwarze 1377: }
1.205 schwarze 1378:
1379: /* If it is escaped, skip it. */
1380:
1381: for (cp = stesc - 1; cp >= start; cp--)
1.303 schwarze 1382: if (*cp != r->escape)
1.205 schwarze 1383: break;
1384:
1.238 schwarze 1385: if ((stesc - cp) % 2 == 0) {
1.303 schwarze 1386: while (stesc > cp)
1387: *stesc-- = '\\';
1.205 schwarze 1388: continue;
1.303 schwarze 1389: } else if (stesc[1] != '\0') {
1390: *stesc = '\\';
1391: } else {
1392: *stesc-- = '\0';
1393: if (done)
1394: continue;
1395: else
1.340 schwarze 1396: return ROFF_IGN | ROFF_APPEND;
1.205 schwarze 1397: }
1.108 schwarze 1398:
1.206 schwarze 1399: /* Decide whether to expand or to check only. */
1.108 schwarze 1400:
1.206 schwarze 1401: term = '\0';
1.205 schwarze 1402: cp = stesc + 1;
1.352 schwarze 1403: if (*cp == 'E')
1404: cp++;
1405: esct = cp;
1406: switch (*esct) {
1.207 schwarze 1407: case '*':
1.339 schwarze 1408: case '$':
1.181 schwarze 1409: res = NULL;
1410: break;
1.207 schwarze 1411: case 'B':
1412: case 'w':
1.206 schwarze 1413: term = cp[1];
1414: /* FALLTHROUGH */
1.207 schwarze 1415: case 'n':
1.327 schwarze 1416: sign = cp[1];
1417: if (sign == '+' || sign == '-')
1418: cp++;
1.181 schwarze 1419: res = ubuf;
1420: break;
1421: default:
1.352 schwarze 1422: err = MANDOCERR_OK;
1423: switch(mandoc_escape(&cp, &stnam, &inaml)) {
1424: case ESCAPE_SPECIAL:
1425: if (mchars_spec2cp(stnam, inaml) >= 0)
1426: break;
1427: /* FALLTHROUGH */
1428: case ESCAPE_ERROR:
1429: err = MANDOCERR_ESC_BAD;
1430: break;
1431: case ESCAPE_UNDEF:
1432: err = MANDOCERR_ESC_UNDEF;
1433: break;
1434: case ESCAPE_UNSUPP:
1435: err = MANDOCERR_ESC_UNSUPP;
1436: break;
1437: default:
1438: break;
1439: }
1440: if (err != MANDOCERR_OK)
1441: mandoc_msg(err, ln, (int)(stesc - buf->buf),
1.219 schwarze 1442: "%.*s", (int)(cp - stesc), stesc);
1.303 schwarze 1443: stesc--;
1.205 schwarze 1444: continue;
1.152 kristaps 1445: }
1446:
1.205 schwarze 1447: if (EXPAND_LIMIT < ++expand_count) {
1.350 schwarze 1448: mandoc_msg(MANDOCERR_ROFFLOOP,
1.238 schwarze 1449: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1450: return ROFF_IGN;
1.205 schwarze 1451: }
1.108 schwarze 1452:
1453: /*
1454: * The third character decides the length
1.181 schwarze 1455: * of the name of the string or register.
1.108 schwarze 1456: * Save a pointer to the name.
1457: */
1458:
1.238 schwarze 1459: if (term == '\0') {
1.206 schwarze 1460: switch (*++cp) {
1.207 schwarze 1461: case '\0':
1.206 schwarze 1462: maxl = 0;
1463: break;
1.207 schwarze 1464: case '(':
1.206 schwarze 1465: cp++;
1466: maxl = 2;
1467: break;
1.207 schwarze 1468: case '[':
1.206 schwarze 1469: cp++;
1470: term = ']';
1471: maxl = 0;
1472: break;
1473: default:
1474: maxl = 1;
1475: break;
1476: }
1477: } else {
1478: cp += 2;
1.94 kristaps 1479: maxl = 0;
1480: }
1.108 schwarze 1481: stnam = cp;
1.94 kristaps 1482:
1.108 schwarze 1483: /* Advance to the end of the name. */
1.94 kristaps 1484:
1.253 schwarze 1485: naml = 0;
1.218 schwarze 1486: arg_complete = 1;
1.253 schwarze 1487: while (maxl == 0 || naml < maxl) {
1.238 schwarze 1488: if (*cp == '\0') {
1.350 schwarze 1489: mandoc_msg(MANDOCERR_ESC_BAD, ln,
1490: (int)(stesc - buf->buf), "%s", stesc);
1.218 schwarze 1491: arg_complete = 0;
1.206 schwarze 1492: break;
1.153 kristaps 1493: }
1.238 schwarze 1494: if (maxl == 0 && *cp == term) {
1.206 schwarze 1495: cp++;
1.253 schwarze 1496: break;
1497: }
1.352 schwarze 1498: if (*cp++ != '\\' || *esct != 'w') {
1.253 schwarze 1499: naml++;
1500: continue;
1501: }
1502: switch (mandoc_escape(&cp, NULL, NULL)) {
1503: case ESCAPE_SPECIAL:
1504: case ESCAPE_UNICODE:
1505: case ESCAPE_NUMBERED:
1.352 schwarze 1506: case ESCAPE_UNDEF:
1.253 schwarze 1507: case ESCAPE_OVERSTRIKE:
1508: naml++;
1509: break;
1510: default:
1.94 kristaps 1511: break;
1.206 schwarze 1512: }
1.94 kristaps 1513: }
1514:
1.108 schwarze 1515: /*
1516: * Retrieve the replacement string; if it is
1517: * undefined, resume searching for escapes.
1518: */
1519:
1.352 schwarze 1520: switch (*esct) {
1.207 schwarze 1521: case '*':
1.315 schwarze 1522: if (arg_complete) {
1523: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1524: res = roff_getstrn(r, stnam, naml, &deftype);
1.331 schwarze 1525:
1526: /*
1527: * If not overriden, let \*(.T
1528: * through to the formatters.
1529: */
1530:
1531: if (res == NULL && naml == 2 &&
1532: stnam[0] == '.' && stnam[1] == 'T') {
1533: roff_setstrn(&r->strtab,
1534: ".T", 2, NULL, 0, 0);
1535: stesc--;
1536: continue;
1537: }
1.315 schwarze 1538: }
1.206 schwarze 1539: break;
1.339 schwarze 1540: case '$':
1541: if (r->mstackpos < 0) {
1.350 schwarze 1542: mandoc_msg(MANDOCERR_ARG_UNDEF, ln,
1543: (int)(stesc - buf->buf), "%.3s", stesc);
1.339 schwarze 1544: break;
1545: }
1546: ctx = r->mstack + r->mstackpos;
1.352 schwarze 1547: npos = esct[1] - '1';
1.339 schwarze 1548: if (npos >= 0 && npos <= 8) {
1549: res = npos < ctx->argc ?
1550: ctx->argv[npos] : "";
1551: break;
1552: }
1.352 schwarze 1553: if (esct[1] == '*')
1.339 schwarze 1554: quote_args = 0;
1.352 schwarze 1555: else if (esct[1] == '@')
1.339 schwarze 1556: quote_args = 1;
1557: else {
1.350 schwarze 1558: mandoc_msg(MANDOCERR_ARG_NONUM, ln,
1559: (int)(stesc - buf->buf), "%.3s", stesc);
1.339 schwarze 1560: break;
1561: }
1562: asz = 0;
1563: for (npos = 0; npos < ctx->argc; npos++) {
1564: if (npos)
1565: asz++; /* blank */
1566: if (quote_args)
1567: asz += 2; /* quotes */
1568: asz += strlen(ctx->argv[npos]);
1569: }
1570: if (asz != 3) {
1571: rsz = buf->sz - (stesc - buf->buf) - 3;
1572: if (asz < 3)
1573: memmove(stesc + asz, stesc + 3, rsz);
1574: buf->sz += asz - 3;
1575: nbuf = mandoc_realloc(buf->buf, buf->sz);
1576: start = nbuf + pos;
1577: stesc = nbuf + (stesc - buf->buf);
1578: buf->buf = nbuf;
1579: if (asz > 3)
1580: memmove(stesc + asz, stesc + 3, rsz);
1581: }
1582: for (npos = 0; npos < ctx->argc; npos++) {
1583: if (npos)
1584: *stesc++ = ' ';
1585: if (quote_args)
1586: *stesc++ = '"';
1587: cp = ctx->argv[npos];
1588: while (*cp != '\0')
1589: *stesc++ = *cp++;
1590: if (quote_args)
1591: *stesc++ = '"';
1592: }
1593: continue;
1.207 schwarze 1594: case 'B':
1.206 schwarze 1595: npos = 0;
1.218 schwarze 1596: ubuf[0] = arg_complete &&
1.261 schwarze 1597: roff_evalnum(r, ln, stnam, &npos,
1598: NULL, ROFFNUM_SCALE) &&
1.218 schwarze 1599: stnam + npos + 1 == cp ? '1' : '0';
1.206 schwarze 1600: ubuf[1] = '\0';
1601: break;
1.207 schwarze 1602: case 'n':
1.218 schwarze 1603: if (arg_complete)
1604: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.327 schwarze 1605: roff_getregn(r, stnam, naml, sign));
1.218 schwarze 1606: else
1607: ubuf[0] = '\0';
1.206 schwarze 1608: break;
1.207 schwarze 1609: case 'w':
1.218 schwarze 1610: /* use even incomplete args */
1.208 schwarze 1611: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.206 schwarze 1612: 24 * (int)naml);
1613: break;
1614: }
1.94 kristaps 1615:
1.238 schwarze 1616: if (res == NULL) {
1.352 schwarze 1617: if (*esct == '*')
1.350 schwarze 1618: mandoc_msg(MANDOCERR_STR_UNDEF,
1619: ln, (int)(stesc - buf->buf),
1.339 schwarze 1620: "%.*s", (int)naml, stnam);
1.142 kristaps 1621: res = "";
1.246 schwarze 1622: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1.350 schwarze 1623: mandoc_msg(MANDOCERR_ROFFLOOP,
1.246 schwarze 1624: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1625: return ROFF_IGN;
1.94 kristaps 1626: }
1627:
1.108 schwarze 1628: /* Replace the escape sequence by the string. */
1629:
1.209 schwarze 1630: *stesc = '\0';
1.238 schwarze 1631: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1632: buf->buf, res, cp) + 1;
1.94 kristaps 1633:
1.205 schwarze 1634: /* Prepare for the next replacement. */
1.94 kristaps 1635:
1.205 schwarze 1636: start = nbuf + pos;
1.238 schwarze 1637: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1638: free(buf->buf);
1639: buf->buf = nbuf;
1.154 kristaps 1640: }
1.277 schwarze 1641: return ROFF_CONT;
1.154 kristaps 1642: }
1.353 schwarze 1643:
1644: /*
1645: * Parse a quoted or unquoted roff-style request or macro argument.
1646: * Return a pointer to the parsed argument, which is either the original
1647: * pointer or advanced by one byte in case the argument is quoted.
1648: * NUL-terminate the argument in place.
1649: * Collapse pairs of quotes inside quoted arguments.
1650: * Advance the argument pointer to the next argument,
1651: * or to the NUL byte terminating the argument line.
1652: */
1653: char *
1.355 schwarze 1654: roff_getarg(struct roff *r, char **cpp, int ln, int *pos)
1.353 schwarze 1655: {
1.355 schwarze 1656: struct buf buf;
1.366 schwarze 1657: char *cp, *start;
1.355 schwarze 1658: int newesc, pairs, quoted, white;
1.353 schwarze 1659:
1660: /* Quoting can only start with a new word. */
1661: start = *cpp;
1662: quoted = 0;
1663: if ('"' == *start) {
1664: quoted = 1;
1665: start++;
1666: }
1667:
1.355 schwarze 1668: newesc = pairs = white = 0;
1.353 schwarze 1669: for (cp = start; '\0' != *cp; cp++) {
1670:
1671: /*
1672: * Move the following text left
1673: * after quoted quotes and after "\\" and "\t".
1674: */
1675: if (pairs)
1676: cp[-pairs] = cp[0];
1677:
1678: if ('\\' == cp[0]) {
1679: /*
1680: * In copy mode, translate double to single
1681: * backslashes and backslash-t to literal tabs.
1682: */
1683: switch (cp[1]) {
1684: case 'a':
1685: case 't':
1.354 schwarze 1686: cp[-pairs] = '\t';
1.355 schwarze 1687: pairs++;
1688: cp++;
1689: break;
1.353 schwarze 1690: case '\\':
1.355 schwarze 1691: newesc = 1;
1692: cp[-pairs] = ASCII_ESC;
1.353 schwarze 1693: pairs++;
1694: cp++;
1695: break;
1696: case ' ':
1697: /* Skip escaped blanks. */
1698: if (0 == quoted)
1699: cp++;
1700: break;
1701: default:
1702: break;
1703: }
1704: } else if (0 == quoted) {
1705: if (' ' == cp[0]) {
1706: /* Unescaped blanks end unquoted args. */
1707: white = 1;
1708: break;
1709: }
1710: } else if ('"' == cp[0]) {
1711: if ('"' == cp[1]) {
1712: /* Quoted quotes collapse. */
1713: pairs++;
1714: cp++;
1715: } else {
1716: /* Unquoted quotes end quoted args. */
1717: quoted = 2;
1718: break;
1719: }
1720: }
1721: }
1722:
1723: /* Quoted argument without a closing quote. */
1724: if (1 == quoted)
1725: mandoc_msg(MANDOCERR_ARG_QUOTE, ln, *pos, NULL);
1726:
1727: /* NUL-terminate this argument and move to the next one. */
1728: if (pairs)
1729: cp[-pairs] = '\0';
1730: if ('\0' != *cp) {
1731: *cp++ = '\0';
1732: while (' ' == *cp)
1733: cp++;
1734: }
1735: *pos += (int)(cp - start) + (quoted ? 1 : 0);
1736: *cpp = cp;
1737:
1738: if ('\0' == *cp && (white || ' ' == cp[-1]))
1739: mandoc_msg(MANDOCERR_SPACE_EOL, ln, *pos, NULL);
1740:
1.355 schwarze 1741: start = mandoc_strdup(start);
1742: if (newesc == 0)
1743: return start;
1744:
1745: buf.buf = start;
1746: buf.sz = strlen(start) + 1;
1747: buf.next = NULL;
1748: if (roff_expand(r, &buf, ln, 0, ASCII_ESC) & ROFF_IGN) {
1749: free(buf.buf);
1750: buf.buf = mandoc_strdup("");
1751: }
1752: return buf.buf;
1.353 schwarze 1753: }
1754:
1.154 kristaps 1755:
1756: /*
1.275 schwarze 1757: * Process text streams.
1.154 kristaps 1758: */
1.340 schwarze 1759: static int
1.305 schwarze 1760: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.154 kristaps 1761: {
1762: size_t sz;
1763: const char *start;
1.178 schwarze 1764: char *p;
1765: int isz;
1.154 kristaps 1766: enum mandoc_esc esc;
1767:
1.275 schwarze 1768: /* Spring the input line trap. */
1769:
1770: if (roffit_lines == 1) {
1771: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1772: free(buf->buf);
1773: buf->buf = p;
1774: buf->sz = isz + 1;
1775: *offs = 0;
1776: free(roffit_macro);
1777: roffit_lines = 0;
1.277 schwarze 1778: return ROFF_REPARSE;
1.275 schwarze 1779: } else if (roffit_lines > 1)
1780: --roffit_lines;
1781:
1.305 schwarze 1782: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1783: if (roffce_lines < 1) {
1784: r->man->last = roffce_node;
1785: r->man->next = ROFF_NEXT_SIBLING;
1786: roffce_lines = 0;
1787: roffce_node = NULL;
1788: } else
1789: roffce_lines--;
1790: }
1791:
1.275 schwarze 1792: /* Convert all breakable hyphens into ASCII_HYPH. */
1793:
1.238 schwarze 1794: start = p = buf->buf + pos;
1.154 kristaps 1795:
1.238 schwarze 1796: while (*p != '\0') {
1.154 kristaps 1797: sz = strcspn(p, "-\\");
1798: p += sz;
1799:
1.238 schwarze 1800: if (*p == '\0')
1.159 kristaps 1801: break;
1802:
1.238 schwarze 1803: if (*p == '\\') {
1.154 kristaps 1804: /* Skip over escapes. */
1805: p++;
1.189 schwarze 1806: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.238 schwarze 1807: if (esc == ESCAPE_ERROR)
1.154 kristaps 1808: break;
1.264 schwarze 1809: while (*p == '-')
1810: p++;
1.155 kristaps 1811: continue;
1.159 kristaps 1812: } else if (p == start) {
1.158 kristaps 1813: p++;
1.155 kristaps 1814: continue;
1.158 kristaps 1815: }
1.155 kristaps 1816:
1.171 schwarze 1817: if (isalpha((unsigned char)p[-1]) &&
1818: isalpha((unsigned char)p[1]))
1.155 kristaps 1819: *p = ASCII_HYPH;
1820: p++;
1.94 kristaps 1821: }
1.277 schwarze 1822: return ROFF_CONT;
1.94 kristaps 1823: }
1824:
1.340 schwarze 1825: int
1.238 schwarze 1826: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.67 kristaps 1827: {
1.294 schwarze 1828: enum roff_tok t;
1.340 schwarze 1829: int e;
1.238 schwarze 1830: int pos; /* parse point */
1.243 schwarze 1831: int spos; /* saved parse point for messages */
1.238 schwarze 1832: int ppos; /* original offset in buf->buf */
1833: int ctl; /* macro line (boolean) */
1834:
1835: ppos = pos = *offs;
1.79 kristaps 1836:
1.230 schwarze 1837: /* Handle in-line equation delimiters. */
1838:
1.236 schwarze 1839: if (r->tbl == NULL &&
1840: r->last_eqn != NULL && r->last_eqn->delim &&
1.230 schwarze 1841: (r->eqn == NULL || r->eqn_inline)) {
1.238 schwarze 1842: e = roff_eqndelim(r, buf, pos);
1.230 schwarze 1843: if (e == ROFF_REPARSE)
1.277 schwarze 1844: return e;
1.230 schwarze 1845: assert(e == ROFF_CONT);
1846: }
1847:
1848: /* Expand some escape sequences. */
1.94 kristaps 1849:
1.355 schwarze 1850: e = roff_expand(r, buf, ln, pos, r->escape);
1.340 schwarze 1851: if ((e & ROFF_MASK) == ROFF_IGN)
1.277 schwarze 1852: return e;
1.238 schwarze 1853: assert(e == ROFF_CONT);
1.94 kristaps 1854:
1.238 schwarze 1855: ctl = roff_getcontrol(r, buf->buf, &pos);
1.130 kristaps 1856:
1.94 kristaps 1857: /*
1.79 kristaps 1858: * First, if a scope is open and we're not a macro, pass the
1.252 schwarze 1859: * text through the macro's filter.
1860: * Equations process all content themselves.
1861: * Tables process almost all content themselves, but we want
1862: * to warn about macros before passing it there.
1.79 kristaps 1863: */
1.74 kristaps 1864:
1.252 schwarze 1865: if (r->last != NULL && ! ctl) {
1.78 kristaps 1866: t = r->last->tok;
1.238 schwarze 1867: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.340 schwarze 1868: if ((e & ROFF_MASK) == ROFF_IGN)
1.277 schwarze 1869: return e;
1.340 schwarze 1870: e &= ~ROFF_MASK;
1871: } else
1872: e = ROFF_IGN;
1.319 schwarze 1873: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1874: eqn_read(r->eqn, buf->buf + ppos);
1.340 schwarze 1875: return e;
1.319 schwarze 1876: }
1.321 schwarze 1877: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1878: tbl_read(r->tbl, ln, buf->buf, ppos);
1.346 schwarze 1879: roff_addtbl(r->man, ln, r->tbl);
1.340 schwarze 1880: return e;
1.321 schwarze 1881: }
1.367 schwarze 1882: if ( ! ctl) {
1883: r->options &= ~MPARSE_COMMENT;
1.340 schwarze 1884: return roff_parsetext(r, buf, pos, offs) | e;
1.367 schwarze 1885: }
1.228 schwarze 1886:
1887: /* Skip empty request lines. */
1888:
1.238 schwarze 1889: if (buf->buf[pos] == '"') {
1.350 schwarze 1890: mandoc_msg(MANDOCERR_COMMENT_BAD, ln, pos, NULL);
1.277 schwarze 1891: return ROFF_IGN;
1.238 schwarze 1892: } else if (buf->buf[pos] == '\0')
1.277 schwarze 1893: return ROFF_IGN;
1.67 kristaps 1894:
1.79 kristaps 1895: /*
1896: * If a scope is open, go to the child handler for that macro,
1897: * as it may want to preprocess before doing anything with it.
1.125 kristaps 1898: * Don't do so if an equation is open.
1.79 kristaps 1899: */
1.78 kristaps 1900:
1.79 kristaps 1901: if (r->last) {
1902: t = r->last->tok;
1.277 schwarze 1903: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1904: }
1.78 kristaps 1905:
1.243 schwarze 1906: /* No scope is open. This is a new request or macro. */
1907:
1.367 schwarze 1908: r->options &= ~MPARSE_COMMENT;
1.243 schwarze 1909: spos = pos;
1910: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1911:
1912: /* Tables ignore most macros. */
1913:
1.308 schwarze 1914: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.309 schwarze 1915: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.350 schwarze 1916: mandoc_msg(MANDOCERR_TBLMACRO,
1917: ln, pos, "%s", buf->buf + spos);
1.308 schwarze 1918: if (t != TOKEN_NONE)
1.277 schwarze 1919: return ROFF_IGN;
1.257 schwarze 1920: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1921: pos++;
1.291 schwarze 1922: while (buf->buf[pos] == ' ')
1.257 schwarze 1923: pos++;
1.321 schwarze 1924: tbl_read(r->tbl, ln, buf->buf, pos);
1.346 schwarze 1925: roff_addtbl(r->man, ln, r->tbl);
1.321 schwarze 1926: return ROFF_IGN;
1.243 schwarze 1927: }
1928:
1.305 schwarze 1929: /* For now, let high level macros abort .ce mode. */
1930:
1931: if (ctl && roffce_node != NULL &&
1.324 schwarze 1932: (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
1933: t == ROFF_TH || t == ROFF_TS)) {
1.305 schwarze 1934: r->man->last = roffce_node;
1935: r->man->next = ROFF_NEXT_SIBLING;
1936: roffce_lines = 0;
1937: roffce_node = NULL;
1938: }
1939:
1.79 kristaps 1940: /*
1.243 schwarze 1941: * This is neither a roff request nor a user-defined macro.
1942: * Let the standard macro set parsers handle it.
1.79 kristaps 1943: */
1.67 kristaps 1944:
1.294 schwarze 1945: if (t == TOKEN_NONE)
1.277 schwarze 1946: return ROFF_CONT;
1.243 schwarze 1947:
1948: /* Execute a roff request or a user defined macro. */
1.67 kristaps 1949:
1.296 schwarze 1950: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.74 kristaps 1951: }
1952:
1.339 schwarze 1953: /*
1954: * Internal interface function to tell the roff parser that execution
1955: * of the current macro ended. This is required because macro
1956: * definitions usually do not end with a .return request.
1957: */
1958: void
1959: roff_userret(struct roff *r)
1960: {
1961: struct mctx *ctx;
1962: int i;
1963:
1964: assert(r->mstackpos >= 0);
1965: ctx = r->mstack + r->mstackpos;
1966: for (i = 0; i < ctx->argc; i++)
1967: free(ctx->argv[i]);
1968: ctx->argc = 0;
1969: r->mstackpos--;
1970: }
1971:
1.117 kristaps 1972: void
1.74 kristaps 1973: roff_endparse(struct roff *r)
1974: {
1.321 schwarze 1975: if (r->last != NULL)
1.350 schwarze 1976: mandoc_msg(MANDOCERR_BLK_NOEND, r->last->line,
1977: r->last->col, "%s", roff_name[r->last->tok]);
1.117 kristaps 1978:
1.321 schwarze 1979: if (r->eqn != NULL) {
1.350 schwarze 1980: mandoc_msg(MANDOCERR_BLK_NOEND,
1.319 schwarze 1981: r->eqn->node->line, r->eqn->node->pos, "EQ");
1982: eqn_parse(r->eqn);
1983: r->eqn = NULL;
1.125 kristaps 1984: }
1985:
1.321 schwarze 1986: if (r->tbl != NULL) {
1.346 schwarze 1987: tbl_end(r->tbl, 1);
1.321 schwarze 1988: r->tbl = NULL;
1.117 kristaps 1989: }
1.67 kristaps 1990: }
1991:
1992: /*
1993: * Parse a roff node's type from the input buffer. This must be in the
1994: * form of ".foo xxx" in the usual way.
1995: */
1.294 schwarze 1996: static enum roff_tok
1.214 schwarze 1997: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.67 kristaps 1998: {
1.214 schwarze 1999: char *cp;
1.106 kristaps 2000: const char *mac;
2001: size_t maclen;
1.315 schwarze 2002: int deftype;
1.294 schwarze 2003: enum roff_tok t;
1.67 kristaps 2004:
1.214 schwarze 2005: cp = buf + *pos;
2006:
2007: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.294 schwarze 2008: return TOKEN_NONE;
1.67 kristaps 2009:
1.214 schwarze 2010: mac = cp;
2011: maclen = roff_getname(r, &cp, ln, ppos);
1.67 kristaps 2012:
1.315 schwarze 2013: deftype = ROFFDEF_USER | ROFFDEF_REN;
2014: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
2015: switch (deftype) {
2016: case ROFFDEF_USER:
2017: t = ROFF_USERDEF;
2018: break;
2019: case ROFFDEF_REN:
2020: t = ROFF_RENAMED;
2021: break;
2022: default:
2023: t = roffhash_find(r->reqtab, mac, maclen);
2024: break;
2025: }
1.294 schwarze 2026: if (t != TOKEN_NONE)
1.214 schwarze 2027: *pos = cp - buf;
1.325 schwarze 2028: else if (deftype == ROFFDEF_UNDEF) {
2029: /* Using an undefined macro defines it to be empty. */
2030: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
2031: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
2032: }
1.277 schwarze 2033: return t;
1.67 kristaps 2034: }
2035:
1.266 schwarze 2036: /* --- handling of request blocks ----------------------------------------- */
2037:
1.375 schwarze 2038: /*
2039: * Close a macro definition block or an "ignore" block.
2040: */
1.340 schwarze 2041: static int
1.76 kristaps 2042: roff_cblock(ROFF_ARGS)
1.67 kristaps 2043: {
1.375 schwarze 2044: int rr;
1.79 kristaps 2045:
1.238 schwarze 2046: if (r->last == NULL) {
1.350 schwarze 2047: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.277 schwarze 2048: return ROFF_IGN;
1.76 kristaps 2049: }
1.67 kristaps 2050:
1.81 kristaps 2051: switch (r->last->tok) {
1.207 schwarze 2052: case ROFF_am:
2053: case ROFF_ami:
2054: case ROFF_de:
2055: case ROFF_dei:
2056: case ROFF_ig:
1.81 kristaps 2057: break;
1.375 schwarze 2058: case ROFF_am1:
2059: case ROFF_de1:
2060: /* Remapped in roff_block(). */
2061: abort();
1.81 kristaps 2062: default:
1.350 schwarze 2063: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.277 schwarze 2064: return ROFF_IGN;
1.76 kristaps 2065: }
1.67 kristaps 2066:
1.375 schwarze 2067: roffnode_pop(r);
2068: roffnode_cleanscope(r);
2069:
2070: /*
2071: * If a conditional block with braces is still open,
2072: * check for "\}" block end markers.
2073: */
2074:
2075: if (r->last != NULL && r->last->endspan < 0) {
2076: rr = 1; /* If arguments follow "\}", warn about them. */
2077: roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
2078: }
2079:
1.238 schwarze 2080: if (buf->buf[pos] != '\0')
1.350 schwarze 2081: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.238 schwarze 2082: ".. %s", buf->buf + pos);
1.71 kristaps 2083:
1.277 schwarze 2084: return ROFF_IGN;
1.67 kristaps 2085: }
2086:
1.364 schwarze 2087: /*
2088: * Pop all nodes ending at the end of the current input line.
2089: * Return the number of loops ended.
2090: */
1.340 schwarze 2091: static int
1.76 kristaps 2092: roffnode_cleanscope(struct roff *r)
1.67 kristaps 2093: {
1.340 schwarze 2094: int inloop;
1.67 kristaps 2095:
1.340 schwarze 2096: inloop = 0;
1.375 schwarze 2097: while (r->last != NULL && r->last->endspan > 0) {
1.173 schwarze 2098: if (--r->last->endspan != 0)
1.76 kristaps 2099: break;
1.340 schwarze 2100: inloop += roffnode_pop(r);
1.76 kristaps 2101: }
1.340 schwarze 2102: return inloop;
1.67 kristaps 2103: }
2104:
1.364 schwarze 2105: /*
1.375 schwarze 2106: * Handle the closing "\}" of a conditional block.
1.364 schwarze 2107: * Apart from generating warnings, this only pops nodes.
2108: * Return the number of loops ended.
2109: */
1.340 schwarze 2110: static int
1.195 schwarze 2111: roff_ccond(struct roff *r, int ln, int ppos)
1.74 kristaps 2112: {
1.76 kristaps 2113: if (NULL == r->last) {
1.350 schwarze 2114: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 2115: return 0;
1.76 kristaps 2116: }
2117:
1.82 kristaps 2118: switch (r->last->tok) {
1.207 schwarze 2119: case ROFF_el:
2120: case ROFF_ie:
2121: case ROFF_if:
1.340 schwarze 2122: case ROFF_while:
1.82 kristaps 2123: break;
2124: default:
1.350 schwarze 2125: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 2126: return 0;
1.75 kristaps 2127: }
2128:
1.76 kristaps 2129: if (r->last->endspan > -1) {
1.350 schwarze 2130: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 2131: return 0;
1.76 kristaps 2132: }
2133:
1.340 schwarze 2134: return roffnode_pop(r) + roffnode_cleanscope(r);
1.76 kristaps 2135: }
2136:
1.340 schwarze 2137: static int
1.80 kristaps 2138: roff_block(ROFF_ARGS)
1.76 kristaps 2139: {
1.315 schwarze 2140: const char *name, *value;
2141: char *call, *cp, *iname, *rname;
2142: size_t csz, namesz, rsz;
2143: int deftype;
1.106 kristaps 2144:
1.220 schwarze 2145: /* Ignore groff compatibility mode for now. */
1.76 kristaps 2146:
1.238 schwarze 2147: if (tok == ROFF_de1)
1.220 schwarze 2148: tok = ROFF_de;
1.251 schwarze 2149: else if (tok == ROFF_dei1)
2150: tok = ROFF_dei;
1.238 schwarze 2151: else if (tok == ROFF_am1)
1.220 schwarze 2152: tok = ROFF_am;
1.251 schwarze 2153: else if (tok == ROFF_ami1)
2154: tok = ROFF_ami;
1.220 schwarze 2155:
2156: /* Parse the macro name argument. */
2157:
1.238 schwarze 2158: cp = buf->buf + pos;
2159: if (tok == ROFF_ig) {
1.220 schwarze 2160: iname = NULL;
2161: namesz = 0;
2162: } else {
2163: iname = cp;
2164: namesz = roff_getname(r, &cp, ln, ppos);
2165: iname[namesz] = '\0';
2166: }
1.107 kristaps 2167:
1.220 schwarze 2168: /* Resolve the macro name argument if it is indirect. */
1.107 kristaps 2169:
1.238 schwarze 2170: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 2171: deftype = ROFFDEF_USER;
2172: name = roff_getstrn(r, iname, namesz, &deftype);
2173: if (name == NULL) {
1.350 schwarze 2174: mandoc_msg(MANDOCERR_STR_UNDEF,
2175: ln, (int)(iname - buf->buf),
1.220 schwarze 2176: "%.*s", (int)namesz, iname);
2177: namesz = 0;
2178: } else
2179: namesz = strlen(name);
2180: } else
2181: name = iname;
1.107 kristaps 2182:
1.238 schwarze 2183: if (namesz == 0 && tok != ROFF_ig) {
1.350 schwarze 2184: mandoc_msg(MANDOCERR_REQ_EMPTY,
2185: ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2186: return ROFF_IGN;
1.220 schwarze 2187: }
1.80 kristaps 2188:
1.106 kristaps 2189: roffnode_push(r, tok, name, ln, ppos);
2190:
2191: /*
2192: * At the beginning of a `de' macro, clear the existing string
2193: * with the same name, if there is one. New content will be
1.193 schwarze 2194: * appended from roff_block_text() in multiline mode.
1.106 kristaps 2195: */
1.107 kristaps 2196:
1.311 schwarze 2197: if (tok == ROFF_de || tok == ROFF_dei) {
1.213 schwarze 2198: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.311 schwarze 2199: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.315 schwarze 2200: } else if (tok == ROFF_am || tok == ROFF_ami) {
2201: deftype = ROFFDEF_ANY;
2202: value = roff_getstrn(r, iname, namesz, &deftype);
2203: switch (deftype) { /* Before appending, ... */
2204: case ROFFDEF_PRE: /* copy predefined to user-defined. */
2205: roff_setstrn(&r->strtab, name, namesz,
2206: value, strlen(value), 0);
2207: break;
2208: case ROFFDEF_REN: /* call original standard macro. */
2209: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2210: (int)strlen(value), value);
2211: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2212: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
2213: free(call);
2214: break;
2215: case ROFFDEF_STD: /* rename and call standard macro. */
2216: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
2217: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
2218: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2219: (int)rsz, rname);
2220: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2221: free(call);
2222: free(rname);
2223: break;
2224: default:
2225: break;
2226: }
1.311 schwarze 2227: }
1.76 kristaps 2228:
1.238 schwarze 2229: if (*cp == '\0')
1.277 schwarze 2230: return ROFF_IGN;
1.78 kristaps 2231:
1.220 schwarze 2232: /* Get the custom end marker. */
1.107 kristaps 2233:
1.220 schwarze 2234: iname = cp;
1.213 schwarze 2235: namesz = roff_getname(r, &cp, ln, ppos);
1.220 schwarze 2236:
2237: /* Resolve the end marker if it is indirect. */
2238:
1.238 schwarze 2239: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 2240: deftype = ROFFDEF_USER;
2241: name = roff_getstrn(r, iname, namesz, &deftype);
2242: if (name == NULL) {
1.350 schwarze 2243: mandoc_msg(MANDOCERR_STR_UNDEF,
2244: ln, (int)(iname - buf->buf),
1.220 schwarze 2245: "%.*s", (int)namesz, iname);
2246: namesz = 0;
2247: } else
2248: namesz = strlen(name);
2249: } else
2250: name = iname;
2251:
1.213 schwarze 2252: if (namesz)
2253: r->last->end = mandoc_strndup(name, namesz);
1.78 kristaps 2254:
1.238 schwarze 2255: if (*cp != '\0')
1.350 schwarze 2256: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.295 schwarze 2257: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.74 kristaps 2258:
1.277 schwarze 2259: return ROFF_IGN;
1.78 kristaps 2260: }
2261:
1.340 schwarze 2262: static int
1.80 kristaps 2263: roff_block_sub(ROFF_ARGS)
1.79 kristaps 2264: {
1.294 schwarze 2265: enum roff_tok t;
1.79 kristaps 2266: int i, j;
2267:
2268: /*
2269: * First check whether a custom macro exists at this level. If
2270: * it does, then check against it. This is some of groff's
2271: * stranger behaviours. If we encountered a custom end-scope
2272: * tag and that tag also happens to be a "real" macro, then we
2273: * need to try interpreting it again as a real macro. If it's
2274: * not, then return ignore. Else continue.
2275: */
2276:
2277: if (r->last->end) {
1.130 kristaps 2278: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.238 schwarze 2279: if (buf->buf[i] != r->last->end[j])
1.79 kristaps 2280: break;
2281:
1.238 schwarze 2282: if (r->last->end[j] == '\0' &&
2283: (buf->buf[i] == '\0' ||
2284: buf->buf[i] == ' ' ||
2285: buf->buf[i] == '\t')) {
1.79 kristaps 2286: roffnode_pop(r);
2287: roffnode_cleanscope(r);
2288:
1.238 schwarze 2289: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.130 kristaps 2290: i++;
2291:
2292: pos = i;
1.238 schwarze 2293: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.294 schwarze 2294: TOKEN_NONE)
1.277 schwarze 2295: return ROFF_RERUN;
2296: return ROFF_IGN;
1.79 kristaps 2297: }
2298: }
2299:
2300: /*
2301: * If we have no custom end-query or lookup failed, then try
2302: * pulling it out of the hashtable.
2303: */
2304:
1.238 schwarze 2305: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.79 kristaps 2306:
1.238 schwarze 2307: if (t != ROFF_cblock) {
2308: if (tok != ROFF_ig)
2309: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.277 schwarze 2310: return ROFF_IGN;
1.106 kristaps 2311: }
1.79 kristaps 2312:
1.277 schwarze 2313: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 2314: }
2315:
1.340 schwarze 2316: static int
1.80 kristaps 2317: roff_block_text(ROFF_ARGS)
1.78 kristaps 2318: {
2319:
1.238 schwarze 2320: if (tok != ROFF_ig)
2321: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.106 kristaps 2322:
1.277 schwarze 2323: return ROFF_IGN;
1.78 kristaps 2324: }
2325:
1.375 schwarze 2326: /*
2327: * Check for a closing "\}" and handle it.
2328: * In this function, the final "int *offs" argument is used for
2329: * different purposes than elsewhere:
2330: * Input: *offs == 0: caller wants to discard arguments following \}
2331: * *offs == 1: caller wants to preserve text following \}
2332: * Output: *offs = 0: tell caller to discard input line
2333: * *offs = 1: tell caller to use input line
2334: */
1.340 schwarze 2335: static int
1.375 schwarze 2336: roff_cond_checkend(ROFF_ARGS)
1.82 kristaps 2337: {
1.340 schwarze 2338: char *ep;
2339: int endloop, irc, rr;
1.82 kristaps 2340:
1.340 schwarze 2341: irc = ROFF_IGN;
1.82 kristaps 2342: rr = r->last->rule;
1.340 schwarze 2343: endloop = tok != ROFF_while ? ROFF_IGN :
2344: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2345: if (roffnode_cleanscope(r))
2346: irc |= endloop;
1.144 kristaps 2347:
1.196 schwarze 2348: /*
1.375 schwarze 2349: * If "\}" occurs on a macro line without a preceding macro or
2350: * a text line contains nothing else, drop the line completely.
1.196 schwarze 2351: */
2352:
1.238 schwarze 2353: ep = buf->buf + pos;
1.375 schwarze 2354: if (ep[0] == '\\' && ep[1] == '}' && (ep[2] == '\0' || *offs == 0))
1.198 schwarze 2355: rr = 0;
1.196 schwarze 2356:
1.343 schwarze 2357: /*
1.375 schwarze 2358: * The closing delimiter "\}" rewinds the conditional scope
1.343 schwarze 2359: * but is otherwise ignored when interpreting the line.
2360: */
1.144 kristaps 2361:
1.238 schwarze 2362: while ((ep = strchr(ep, '\\')) != NULL) {
1.318 schwarze 2363: switch (ep[1]) {
2364: case '}':
1.376 ! schwarze 2365: if (ep[2] == '\0')
! 2366: ep[0] = '\0';
! 2367: else if (rr)
1.375 schwarze 2368: ep[1] = '&';
2369: else
2370: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1.340 schwarze 2371: if (roff_ccond(r, ln, ep - buf->buf))
2372: irc |= endloop;
1.318 schwarze 2373: break;
2374: case '\0':
2375: ++ep;
2376: break;
2377: default:
2378: ep += 2;
2379: break;
1.197 schwarze 2380: }
1.177 schwarze 2381: }
1.375 schwarze 2382: *offs = rr;
2383: return irc;
2384: }
1.318 schwarze 2385:
1.375 schwarze 2386: /*
2387: * Parse and process a request or macro line in conditional scope.
2388: */
2389: static int
2390: roff_cond_sub(ROFF_ARGS)
2391: {
2392: struct roffnode *bl;
2393: int irc, rr;
2394: enum roff_tok t;
2395:
2396: rr = 0; /* If arguments follow "\}", skip them. */
2397: irc = roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
1.368 schwarze 2398: t = roff_parse(r, buf->buf, &pos, ln, ppos);
2399:
2400: /* For now, let high level macros abort .ce mode. */
2401:
2402: if (roffce_node != NULL &&
2403: (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
2404: t == ROFF_TH || t == ROFF_TS)) {
2405: r->man->last = roffce_node;
2406: r->man->next = ROFF_NEXT_SIBLING;
2407: roffce_lines = 0;
2408: roffce_node = NULL;
2409: }
2410:
1.318 schwarze 2411: /*
2412: * Fully handle known macros when they are structurally
2413: * required or when the conditional evaluated to true.
2414: */
2415:
1.364 schwarze 2416: if (t == ROFF_break) {
2417: if (irc & ROFF_LOOPMASK)
2418: irc = ROFF_IGN | ROFF_LOOPEXIT;
2419: else if (rr) {
2420: for (bl = r->last; bl != NULL; bl = bl->parent) {
2421: bl->rule = 0;
2422: if (bl->tok == ROFF_while)
2423: break;
2424: }
2425: }
2426: } else if (t != TOKEN_NONE &&
2427: (rr || roffs[t].flags & ROFFMAC_STRUCT))
2428: irc |= (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
2429: else
2430: irc |= rr ? ROFF_CONT : ROFF_IGN;
1.340 schwarze 2431: return irc;
1.82 kristaps 2432: }
2433:
1.375 schwarze 2434: /*
2435: * Parse and process a text line in conditional scope.
2436: */
1.340 schwarze 2437: static int
1.82 kristaps 2438: roff_cond_text(ROFF_ARGS)
1.78 kristaps 2439: {
1.375 schwarze 2440: int irc, rr;
1.343 schwarze 2441:
1.375 schwarze 2442: rr = 1; /* If arguments follow "\}", preserve them. */
2443: irc = roff_cond_checkend(r, tok, buf, ln, ppos, pos, &rr);
1.340 schwarze 2444: if (rr)
2445: irc |= ROFF_CONT;
2446: return irc;
1.74 kristaps 2447: }
2448:
1.266 schwarze 2449: /* --- handling of numeric and conditional expressions -------------------- */
2450:
1.204 schwarze 2451: /*
2452: * Parse a single signed integer number. Stop at the first non-digit.
2453: * If there is at least one digit, return success and advance the
2454: * parse point, else return failure and let the parse point unchanged.
2455: * Ignore overflows, treat them just like the C language.
2456: */
1.184 schwarze 2457: static int
1.261 schwarze 2458: roff_getnum(const char *v, int *pos, int *res, int flags)
1.184 schwarze 2459: {
1.261 schwarze 2460: int myres, scaled, n, p;
1.206 schwarze 2461:
2462: if (NULL == res)
2463: res = &myres;
1.184 schwarze 2464:
2465: p = *pos;
2466: n = v[p] == '-';
1.261 schwarze 2467: if (n || v[p] == '+')
1.184 schwarze 2468: p++;
2469:
1.261 schwarze 2470: if (flags & ROFFNUM_WHITE)
2471: while (isspace((unsigned char)v[p]))
2472: p++;
2473:
1.184 schwarze 2474: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.204 schwarze 2475: *res = 10 * *res + v[p] - '0';
1.184 schwarze 2476: if (p == *pos + n)
2477: return 0;
2478:
2479: if (n)
2480: *res = -*res;
2481:
1.254 schwarze 2482: /* Each number may be followed by one optional scaling unit. */
2483:
2484: switch (v[p]) {
2485: case 'f':
1.261 schwarze 2486: scaled = *res * 65536;
1.254 schwarze 2487: break;
2488: case 'i':
1.261 schwarze 2489: scaled = *res * 240;
1.254 schwarze 2490: break;
2491: case 'c':
1.261 schwarze 2492: scaled = *res * 240 / 2.54;
1.254 schwarze 2493: break;
2494: case 'v':
2495: case 'P':
1.261 schwarze 2496: scaled = *res * 40;
1.254 schwarze 2497: break;
2498: case 'm':
2499: case 'n':
1.261 schwarze 2500: scaled = *res * 24;
1.254 schwarze 2501: break;
2502: case 'p':
1.261 schwarze 2503: scaled = *res * 10 / 3;
1.254 schwarze 2504: break;
2505: case 'u':
1.261 schwarze 2506: scaled = *res;
1.254 schwarze 2507: break;
2508: case 'M':
1.261 schwarze 2509: scaled = *res * 6 / 25;
1.254 schwarze 2510: break;
2511: default:
1.261 schwarze 2512: scaled = *res;
1.254 schwarze 2513: p--;
2514: break;
2515: }
1.261 schwarze 2516: if (flags & ROFFNUM_SCALE)
2517: *res = scaled;
1.254 schwarze 2518:
2519: *pos = p + 1;
1.277 schwarze 2520: return 1;
1.184 schwarze 2521: }
2522:
1.198 schwarze 2523: /*
2524: * Evaluate a string comparison condition.
2525: * The first character is the delimiter.
2526: * Succeed if the string up to its second occurrence
2527: * matches the string up to its third occurence.
2528: * Advance the cursor after the third occurrence
2529: * or lacking that, to the end of the line.
2530: */
2531: static int
2532: roff_evalstrcond(const char *v, int *pos)
2533: {
2534: const char *s1, *s2, *s3;
2535: int match;
2536:
2537: match = 0;
2538: s1 = v + *pos; /* initial delimiter */
2539: s2 = s1 + 1; /* for scanning the first string */
2540: s3 = strchr(s2, *s1); /* for scanning the second string */
2541:
2542: if (NULL == s3) /* found no middle delimiter */
2543: goto out;
2544:
2545: while ('\0' != *++s3) {
2546: if (*s2 != *s3) { /* mismatch */
2547: s3 = strchr(s3, *s1);
2548: break;
2549: }
2550: if (*s3 == *s1) { /* found the final delimiter */
2551: match = 1;
2552: break;
2553: }
2554: s2++;
2555: }
2556:
2557: out:
2558: if (NULL == s3)
2559: s3 = strchr(s2, '\0');
1.242 schwarze 2560: else if (*s3 != '\0')
1.198 schwarze 2561: s3++;
2562: *pos = s3 - v;
1.277 schwarze 2563: return match;
1.198 schwarze 2564: }
2565:
1.204 schwarze 2566: /*
2567: * Evaluate an optionally negated single character, numerical,
2568: * or string condition.
2569: */
1.198 schwarze 2570: static int
1.271 schwarze 2571: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.88 kristaps 2572: {
1.336 schwarze 2573: const char *start, *end;
2574: char *cp, *name;
2575: size_t sz;
2576: int deftype, len, number, savepos, istrue, wanttrue;
1.88 kristaps 2577:
1.198 schwarze 2578: if ('!' == v[*pos]) {
2579: wanttrue = 0;
2580: (*pos)++;
2581: } else
2582: wanttrue = 1;
2583:
1.88 kristaps 2584: switch (v[*pos]) {
1.240 schwarze 2585: case '\0':
1.277 schwarze 2586: return 0;
1.207 schwarze 2587: case 'n':
2588: case 'o':
1.88 kristaps 2589: (*pos)++;
1.277 schwarze 2590: return wanttrue;
1.207 schwarze 2591: case 'e':
2592: case 't':
1.239 schwarze 2593: case 'v':
1.88 kristaps 2594: (*pos)++;
1.277 schwarze 2595: return !wanttrue;
1.336 schwarze 2596: case 'c':
2597: do {
2598: (*pos)++;
2599: } while (v[*pos] == ' ');
2600:
2601: /*
2602: * Quirk for groff compatibility:
2603: * The horizontal tab is neither available nor unavailable.
2604: */
2605:
2606: if (v[*pos] == '\t') {
2607: (*pos)++;
2608: return 0;
2609: }
2610:
2611: /* Printable ASCII characters are available. */
2612:
2613: if (v[*pos] != '\\') {
2614: (*pos)++;
2615: return wanttrue;
2616: }
2617:
2618: end = v + ++*pos;
2619: switch (mandoc_escape(&end, &start, &len)) {
2620: case ESCAPE_SPECIAL:
2621: istrue = mchars_spec2cp(start, len) != -1;
2622: break;
2623: case ESCAPE_UNICODE:
2624: istrue = 1;
2625: break;
2626: case ESCAPE_NUMBERED:
2627: istrue = mchars_num2char(start, len) != -1;
2628: break;
2629: default:
2630: istrue = !wanttrue;
2631: break;
2632: }
2633: *pos = end - v;
2634: return istrue == wanttrue;
1.310 schwarze 2635: case 'd':
1.271 schwarze 2636: case 'r':
1.310 schwarze 2637: cp = v + *pos + 1;
2638: while (*cp == ' ')
2639: cp++;
2640: name = cp;
2641: sz = roff_getname(r, &cp, ln, cp - v);
1.315 schwarze 2642: if (sz == 0)
2643: istrue = 0;
2644: else if (v[*pos] == 'r')
2645: istrue = roff_hasregn(r, name, sz);
2646: else {
2647: deftype = ROFFDEF_ANY;
2648: roff_getstrn(r, name, sz, &deftype);
2649: istrue = !!deftype;
2650: }
1.363 schwarze 2651: *pos = (name + sz) - v;
1.310 schwarze 2652: return istrue == wanttrue;
1.88 kristaps 2653: default:
2654: break;
2655: }
2656:
1.241 schwarze 2657: savepos = *pos;
1.261 schwarze 2658: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.277 schwarze 2659: return (number > 0) == wanttrue;
1.241 schwarze 2660: else if (*pos == savepos)
1.277 schwarze 2661: return roff_evalstrcond(v, pos) == wanttrue;
1.204 schwarze 2662: else
1.277 schwarze 2663: return 0;
1.88 kristaps 2664: }
2665:
1.340 schwarze 2666: static int
1.103 kristaps 2667: roff_line_ignore(ROFF_ARGS)
1.89 kristaps 2668: {
1.123 schwarze 2669:
1.277 schwarze 2670: return ROFF_IGN;
1.89 kristaps 2671: }
2672:
1.340 schwarze 2673: static int
1.251 schwarze 2674: roff_insec(ROFF_ARGS)
2675: {
2676:
1.350 schwarze 2677: mandoc_msg(MANDOCERR_REQ_INSEC, ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2678: return ROFF_IGN;
1.251 schwarze 2679: }
2680:
1.340 schwarze 2681: static int
1.251 schwarze 2682: roff_unsupp(ROFF_ARGS)
2683: {
2684:
1.350 schwarze 2685: mandoc_msg(MANDOCERR_REQ_UNSUPP, ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2686: return ROFF_IGN;
1.251 schwarze 2687: }
2688:
1.340 schwarze 2689: static int
1.82 kristaps 2690: roff_cond(ROFF_ARGS)
1.74 kristaps 2691: {
1.340 schwarze 2692: int irc;
1.173 schwarze 2693:
2694: roffnode_push(r, tok, NULL, ln, ppos);
1.74 kristaps 2695:
1.207 schwarze 2696: /*
1.134 kristaps 2697: * An `.el' has no conditional body: it will consume the value
2698: * of the current rstack entry set in prior `ie' calls or
1.207 schwarze 2699: * defaults to DENY.
1.134 kristaps 2700: *
2701: * If we're not an `el', however, then evaluate the conditional.
2702: */
1.133 kristaps 2703:
1.238 schwarze 2704: r->last->rule = tok == ROFF_el ?
1.207 schwarze 2705: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.238 schwarze 2706: roff_evalcond(r, ln, buf->buf, &pos);
1.77 kristaps 2707:
1.134 kristaps 2708: /*
2709: * An if-else will put the NEGATION of the current evaluated
2710: * conditional into the stack of rules.
2711: */
2712:
1.238 schwarze 2713: if (tok == ROFF_ie) {
1.223 schwarze 2714: if (r->rstackpos + 1 == r->rstacksz) {
2715: r->rstacksz += 16;
2716: r->rstack = mandoc_reallocarray(r->rstack,
2717: r->rstacksz, sizeof(int));
1.134 kristaps 2718: }
1.198 schwarze 2719: r->rstack[++r->rstackpos] = !r->last->rule;
1.82 kristaps 2720: }
1.88 kristaps 2721:
2722: /* If the parent has false as its rule, then so do we. */
2723:
1.198 schwarze 2724: if (r->last->parent && !r->last->parent->rule)
2725: r->last->rule = 0;
1.88 kristaps 2726:
2727: /*
1.173 schwarze 2728: * Determine scope.
2729: * If there is nothing on the line after the conditional,
2730: * not even whitespace, use next-line scope.
1.340 schwarze 2731: * Except that .while does not support next-line scope.
1.88 kristaps 2732: */
1.74 kristaps 2733:
1.340 schwarze 2734: if (buf->buf[pos] == '\0' && tok != ROFF_while) {
1.173 schwarze 2735: r->last->endspan = 2;
2736: goto out;
2737: }
2738:
1.238 schwarze 2739: while (buf->buf[pos] == ' ')
1.173 schwarze 2740: pos++;
2741:
2742: /* An opening brace requests multiline scope. */
1.75 kristaps 2743:
1.238 schwarze 2744: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.75 kristaps 2745: r->last->endspan = -1;
2746: pos += 2;
1.272 schwarze 2747: while (buf->buf[pos] == ' ')
2748: pos++;
1.173 schwarze 2749: goto out;
1.207 schwarze 2750: }
1.74 kristaps 2751:
1.77 kristaps 2752: /*
1.173 schwarze 2753: * Anything else following the conditional causes
2754: * single-line scope. Warn if the scope contains
2755: * nothing but trailing whitespace.
1.77 kristaps 2756: */
2757:
1.238 schwarze 2758: if (buf->buf[pos] == '\0')
1.350 schwarze 2759: mandoc_msg(MANDOCERR_COND_EMPTY,
2760: ln, ppos, "%s", roff_name[tok]);
1.77 kristaps 2761:
1.173 schwarze 2762: r->last->endspan = 1;
1.74 kristaps 2763:
1.173 schwarze 2764: out:
1.75 kristaps 2765: *offs = pos;
1.340 schwarze 2766: irc = ROFF_RERUN;
2767: if (tok == ROFF_while)
2768: irc |= ROFF_WHILE;
2769: return irc;
1.83 schwarze 2770: }
2771:
1.340 schwarze 2772: static int
1.92 schwarze 2773: roff_ds(ROFF_ARGS)
2774: {
1.212 schwarze 2775: char *string;
2776: const char *name;
2777: size_t namesz;
1.96 kristaps 2778:
1.251 schwarze 2779: /* Ignore groff compatibility mode for now. */
2780:
2781: if (tok == ROFF_ds1)
2782: tok = ROFF_ds;
2783: else if (tok == ROFF_as1)
2784: tok = ROFF_as;
2785:
1.96 kristaps 2786: /*
1.212 schwarze 2787: * The first word is the name of the string.
2788: * If it is empty or terminated by an escape sequence,
2789: * abort the `ds' request without defining anything.
1.96 kristaps 2790: */
1.92 schwarze 2791:
1.238 schwarze 2792: name = string = buf->buf + pos;
2793: if (*name == '\0')
1.277 schwarze 2794: return ROFF_IGN;
1.92 schwarze 2795:
1.212 schwarze 2796: namesz = roff_getname(r, &string, ln, pos);
1.363 schwarze 2797: switch (name[namesz]) {
2798: case '\\':
1.277 schwarze 2799: return ROFF_IGN;
1.363 schwarze 2800: case '\t':
2801: string = buf->buf + pos + namesz;
2802: break;
2803: default:
2804: break;
2805: }
1.212 schwarze 2806:
2807: /* Read past the initial double-quote, if any. */
1.238 schwarze 2808: if (*string == '"')
1.92 schwarze 2809: string++;
2810:
1.96 kristaps 2811: /* The rest is the value. */
1.212 schwarze 2812: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2813: ROFF_as == tok);
1.311 schwarze 2814: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.277 schwarze 2815: return ROFF_IGN;
1.92 schwarze 2816: }
2817:
1.204 schwarze 2818: /*
2819: * Parse a single operator, one or two characters long.
2820: * If the operator is recognized, return success and advance the
2821: * parse point, else return failure and let the parse point unchanged.
2822: */
2823: static int
2824: roff_getop(const char *v, int *pos, char *res)
2825: {
2826:
2827: *res = v[*pos];
2828:
2829: switch (*res) {
1.207 schwarze 2830: case '+':
2831: case '-':
2832: case '*':
2833: case '/':
2834: case '%':
2835: case '&':
2836: case ':':
1.204 schwarze 2837: break;
2838: case '<':
2839: switch (v[*pos + 1]) {
1.207 schwarze 2840: case '=':
1.204 schwarze 2841: *res = 'l';
2842: (*pos)++;
2843: break;
1.207 schwarze 2844: case '>':
1.204 schwarze 2845: *res = '!';
2846: (*pos)++;
2847: break;
1.207 schwarze 2848: case '?':
1.204 schwarze 2849: *res = 'i';
2850: (*pos)++;
2851: break;
2852: default:
2853: break;
2854: }
2855: break;
2856: case '>':
2857: switch (v[*pos + 1]) {
1.207 schwarze 2858: case '=':
1.204 schwarze 2859: *res = 'g';
2860: (*pos)++;
2861: break;
1.207 schwarze 2862: case '?':
1.204 schwarze 2863: *res = 'a';
2864: (*pos)++;
2865: break;
2866: default:
2867: break;
2868: }
2869: break;
2870: case '=':
2871: if ('=' == v[*pos + 1])
2872: (*pos)++;
2873: break;
2874: default:
1.277 schwarze 2875: return 0;
1.204 schwarze 2876: }
2877: (*pos)++;
2878:
1.277 schwarze 2879: return *res;
1.204 schwarze 2880: }
2881:
2882: /*
2883: * Evaluate either a parenthesized numeric expression
2884: * or a single signed integer number.
2885: */
2886: static int
1.235 schwarze 2887: roff_evalpar(struct roff *r, int ln,
1.261 schwarze 2888: const char *v, int *pos, int *res, int flags)
1.204 schwarze 2889: {
2890:
2891: if ('(' != v[*pos])
1.277 schwarze 2892: return roff_getnum(v, pos, res, flags);
1.204 schwarze 2893:
2894: (*pos)++;
1.261 schwarze 2895: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.277 schwarze 2896: return 0;
1.204 schwarze 2897:
1.206 schwarze 2898: /*
2899: * Omission of the closing parenthesis
2900: * is an error in validation mode,
2901: * but ignored in evaluation mode.
2902: */
2903:
1.204 schwarze 2904: if (')' == v[*pos])
2905: (*pos)++;
1.206 schwarze 2906: else if (NULL == res)
1.277 schwarze 2907: return 0;
1.204 schwarze 2908:
1.277 schwarze 2909: return 1;
1.204 schwarze 2910: }
2911:
2912: /*
2913: * Evaluate a complete numeric expression.
2914: * Proceed left to right, there is no concept of precedence.
2915: */
2916: static int
1.235 schwarze 2917: roff_evalnum(struct roff *r, int ln, const char *v,
1.261 schwarze 2918: int *pos, int *res, int flags)
1.204 schwarze 2919: {
2920: int mypos, operand2;
2921: char operator;
2922:
2923: if (NULL == pos) {
2924: mypos = 0;
2925: pos = &mypos;
2926: }
2927:
1.261 schwarze 2928: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2929: while (isspace((unsigned char)v[*pos]))
2930: (*pos)++;
2931:
1.261 schwarze 2932: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.277 schwarze 2933: return 0;
1.204 schwarze 2934:
2935: while (1) {
1.261 schwarze 2936: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2937: while (isspace((unsigned char)v[*pos]))
2938: (*pos)++;
2939:
2940: if ( ! roff_getop(v, pos, &operator))
2941: break;
2942:
1.261 schwarze 2943: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2944: while (isspace((unsigned char)v[*pos]))
2945: (*pos)++;
2946:
1.261 schwarze 2947: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.277 schwarze 2948: return 0;
1.204 schwarze 2949:
1.261 schwarze 2950: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2951: while (isspace((unsigned char)v[*pos]))
2952: (*pos)++;
1.206 schwarze 2953:
2954: if (NULL == res)
2955: continue;
1.204 schwarze 2956:
2957: switch (operator) {
1.207 schwarze 2958: case '+':
1.204 schwarze 2959: *res += operand2;
2960: break;
1.207 schwarze 2961: case '-':
1.204 schwarze 2962: *res -= operand2;
2963: break;
1.207 schwarze 2964: case '*':
1.204 schwarze 2965: *res *= operand2;
2966: break;
1.207 schwarze 2967: case '/':
1.244 schwarze 2968: if (operand2 == 0) {
1.235 schwarze 2969: mandoc_msg(MANDOCERR_DIVZERO,
1.350 schwarze 2970: ln, *pos, "%s", v);
1.234 kristaps 2971: *res = 0;
2972: break;
2973: }
1.204 schwarze 2974: *res /= operand2;
2975: break;
1.207 schwarze 2976: case '%':
1.244 schwarze 2977: if (operand2 == 0) {
2978: mandoc_msg(MANDOCERR_DIVZERO,
1.350 schwarze 2979: ln, *pos, "%s", v);
1.244 schwarze 2980: *res = 0;
2981: break;
2982: }
1.204 schwarze 2983: *res %= operand2;
2984: break;
1.207 schwarze 2985: case '<':
1.204 schwarze 2986: *res = *res < operand2;
2987: break;
1.207 schwarze 2988: case '>':
1.204 schwarze 2989: *res = *res > operand2;
2990: break;
1.207 schwarze 2991: case 'l':
1.204 schwarze 2992: *res = *res <= operand2;
2993: break;
1.207 schwarze 2994: case 'g':
1.204 schwarze 2995: *res = *res >= operand2;
2996: break;
1.207 schwarze 2997: case '=':
1.204 schwarze 2998: *res = *res == operand2;
2999: break;
1.207 schwarze 3000: case '!':
1.204 schwarze 3001: *res = *res != operand2;
3002: break;
1.207 schwarze 3003: case '&':
1.204 schwarze 3004: *res = *res && operand2;
3005: break;
1.207 schwarze 3006: case ':':
1.204 schwarze 3007: *res = *res || operand2;
3008: break;
1.207 schwarze 3009: case 'i':
1.204 schwarze 3010: if (operand2 < *res)
3011: *res = operand2;
3012: break;
1.207 schwarze 3013: case 'a':
1.204 schwarze 3014: if (operand2 > *res)
3015: *res = operand2;
3016: break;
3017: default:
3018: abort();
3019: }
3020: }
1.277 schwarze 3021: return 1;
1.204 schwarze 3022: }
3023:
1.266 schwarze 3024: /* --- register management ------------------------------------------------ */
3025:
1.180 schwarze 3026: void
1.187 schwarze 3027: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.147 kristaps 3028: {
1.327 schwarze 3029: roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
1.326 schwarze 3030: }
3031:
3032: static void
3033: roff_setregn(struct roff *r, const char *name, size_t len,
1.327 schwarze 3034: int val, char sign, int step)
1.326 schwarze 3035: {
1.180 schwarze 3036: struct roffreg *reg;
3037:
3038: /* Search for an existing register with the same name. */
3039: reg = r->regtab;
3040:
1.326 schwarze 3041: while (reg != NULL && (reg->key.sz != len ||
3042: strncmp(reg->key.p, name, len) != 0))
1.180 schwarze 3043: reg = reg->next;
1.147 kristaps 3044:
1.180 schwarze 3045: if (NULL == reg) {
3046: /* Create a new register. */
3047: reg = mandoc_malloc(sizeof(struct roffreg));
1.326 schwarze 3048: reg->key.p = mandoc_strndup(name, len);
3049: reg->key.sz = len;
1.187 schwarze 3050: reg->val = 0;
1.327 schwarze 3051: reg->step = 0;
1.180 schwarze 3052: reg->next = r->regtab;
3053: r->regtab = reg;
3054: }
3055:
1.187 schwarze 3056: if ('+' == sign)
3057: reg->val += val;
3058: else if ('-' == sign)
3059: reg->val -= val;
3060: else
3061: reg->val = val;
1.327 schwarze 3062: if (step != INT_MIN)
3063: reg->step = step;
1.147 kristaps 3064: }
3065:
1.192 schwarze 3066: /*
3067: * Handle some predefined read-only number registers.
3068: * For now, return -1 if the requested register is not predefined;
3069: * in case a predefined read-only register having the value -1
3070: * were to turn up, another special value would have to be chosen.
3071: */
3072: static int
1.273 schwarze 3073: roff_getregro(const struct roff *r, const char *name)
1.192 schwarze 3074: {
3075:
3076: switch (*name) {
1.273 schwarze 3077: case '$': /* Number of arguments of the last macro evaluated. */
1.339 schwarze 3078: return r->mstackpos < 0 ? 0 : r->mstack[r->mstackpos].argc;
1.207 schwarze 3079: case 'A': /* ASCII approximation mode is always off. */
1.277 schwarze 3080: return 0;
1.207 schwarze 3081: case 'g': /* Groff compatibility mode is always on. */
1.277 schwarze 3082: return 1;
1.207 schwarze 3083: case 'H': /* Fixed horizontal resolution. */
1.277 schwarze 3084: return 24;
1.207 schwarze 3085: case 'j': /* Always adjust left margin only. */
1.277 schwarze 3086: return 0;
1.207 schwarze 3087: case 'T': /* Some output device is always defined. */
1.277 schwarze 3088: return 1;
1.207 schwarze 3089: case 'V': /* Fixed vertical resolution. */
1.277 schwarze 3090: return 40;
1.192 schwarze 3091: default:
1.277 schwarze 3092: return -1;
1.192 schwarze 3093: }
3094: }
3095:
1.181 schwarze 3096: int
1.326 schwarze 3097: roff_getreg(struct roff *r, const char *name)
1.147 kristaps 3098: {
1.327 schwarze 3099: return roff_getregn(r, name, strlen(name), '\0');
1.181 schwarze 3100: }
3101:
3102: static int
1.327 schwarze 3103: roff_getregn(struct roff *r, const char *name, size_t len, char sign)
1.181 schwarze 3104: {
3105: struct roffreg *reg;
1.192 schwarze 3106: int val;
3107:
3108: if ('.' == name[0] && 2 == len) {
1.273 schwarze 3109: val = roff_getregro(r, name + 1);
1.192 schwarze 3110: if (-1 != val)
1.277 schwarze 3111: return val;
1.192 schwarze 3112: }
1.181 schwarze 3113:
1.327 schwarze 3114: for (reg = r->regtab; reg; reg = reg->next) {
1.181 schwarze 3115: if (len == reg->key.sz &&
1.327 schwarze 3116: 0 == strncmp(name, reg->key.p, len)) {
3117: switch (sign) {
3118: case '+':
3119: reg->val += reg->step;
3120: break;
3121: case '-':
3122: reg->val -= reg->step;
3123: break;
3124: default:
3125: break;
3126: }
1.277 schwarze 3127: return reg->val;
1.327 schwarze 3128: }
3129: }
1.271 schwarze 3130:
1.327 schwarze 3131: roff_setregn(r, name, len, 0, '\0', INT_MIN);
1.277 schwarze 3132: return 0;
1.271 schwarze 3133: }
3134:
3135: static int
3136: roff_hasregn(const struct roff *r, const char *name, size_t len)
3137: {
3138: struct roffreg *reg;
3139: int val;
3140:
3141: if ('.' == name[0] && 2 == len) {
1.273 schwarze 3142: val = roff_getregro(r, name + 1);
1.271 schwarze 3143: if (-1 != val)
1.277 schwarze 3144: return 1;
1.271 schwarze 3145: }
3146:
3147: for (reg = r->regtab; reg; reg = reg->next)
3148: if (len == reg->key.sz &&
3149: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 3150: return 1;
1.147 kristaps 3151:
1.277 schwarze 3152: return 0;
1.147 kristaps 3153: }
3154:
1.180 schwarze 3155: static void
3156: roff_freereg(struct roffreg *reg)
1.147 kristaps 3157: {
1.180 schwarze 3158: struct roffreg *old_reg;
1.147 kristaps 3159:
1.180 schwarze 3160: while (NULL != reg) {
3161: free(reg->key.p);
3162: old_reg = reg;
3163: reg = reg->next;
3164: free(old_reg);
3165: }
1.147 kristaps 3166: }
1.92 schwarze 3167:
1.340 schwarze 3168: static int
1.89 kristaps 3169: roff_nr(ROFF_ARGS)
1.83 schwarze 3170: {
1.327 schwarze 3171: char *key, *val, *step;
1.212 schwarze 3172: size_t keysz;
1.327 schwarze 3173: int iv, is, len;
1.187 schwarze 3174: char sign;
1.89 kristaps 3175:
1.238 schwarze 3176: key = val = buf->buf + pos;
3177: if (*key == '\0')
1.277 schwarze 3178: return ROFF_IGN;
1.212 schwarze 3179:
3180: keysz = roff_getname(r, &val, ln, pos);
1.363 schwarze 3181: if (key[keysz] == '\\' || key[keysz] == '\t')
1.277 schwarze 3182: return ROFF_IGN;
1.89 kristaps 3183:
1.187 schwarze 3184: sign = *val;
1.238 schwarze 3185: if (sign == '+' || sign == '-')
1.187 schwarze 3186: val++;
3187:
1.327 schwarze 3188: len = 0;
3189: if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
3190: return ROFF_IGN;
3191:
3192: step = val + len;
3193: while (isspace((unsigned char)*step))
3194: step++;
3195: if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)
3196: is = INT_MIN;
1.109 kristaps 3197:
1.327 schwarze 3198: roff_setregn(r, key, keysz, iv, sign, is);
1.277 schwarze 3199: return ROFF_IGN;
1.203 schwarze 3200: }
3201:
1.340 schwarze 3202: static int
1.203 schwarze 3203: roff_rr(ROFF_ARGS)
3204: {
3205: struct roffreg *reg, **prev;
1.212 schwarze 3206: char *name, *cp;
3207: size_t namesz;
1.203 schwarze 3208:
1.238 schwarze 3209: name = cp = buf->buf + pos;
3210: if (*name == '\0')
1.277 schwarze 3211: return ROFF_IGN;
1.212 schwarze 3212: namesz = roff_getname(r, &cp, ln, pos);
3213: name[namesz] = '\0';
1.203 schwarze 3214:
3215: prev = &r->regtab;
3216: while (1) {
3217: reg = *prev;
1.238 schwarze 3218: if (reg == NULL || !strcmp(name, reg->key.p))
1.203 schwarze 3219: break;
3220: prev = ®->next;
3221: }
1.238 schwarze 3222: if (reg != NULL) {
1.203 schwarze 3223: *prev = reg->next;
3224: free(reg->key.p);
3225: free(reg);
3226: }
1.277 schwarze 3227: return ROFF_IGN;
1.122 schwarze 3228: }
3229:
1.266 schwarze 3230: /* --- handler functions for roff requests -------------------------------- */
3231:
1.340 schwarze 3232: static int
1.122 schwarze 3233: roff_rm(ROFF_ARGS)
3234: {
3235: const char *name;
3236: char *cp;
1.212 schwarze 3237: size_t namesz;
1.122 schwarze 3238:
1.238 schwarze 3239: cp = buf->buf + pos;
3240: while (*cp != '\0') {
1.212 schwarze 3241: name = cp;
1.238 schwarze 3242: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.212 schwarze 3243: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.311 schwarze 3244: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.363 schwarze 3245: if (name[namesz] == '\\' || name[namesz] == '\t')
1.212 schwarze 3246: break;
1.122 schwarze 3247: }
1.277 schwarze 3248: return ROFF_IGN;
1.178 schwarze 3249: }
3250:
1.340 schwarze 3251: static int
1.178 schwarze 3252: roff_it(ROFF_ARGS)
3253: {
3254: int iv;
3255:
3256: /* Parse the number of lines. */
1.261 schwarze 3257:
3258: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.350 schwarze 3259: mandoc_msg(MANDOCERR_IT_NONUM,
3260: ln, ppos, "%s", buf->buf + 1);
1.277 schwarze 3261: return ROFF_IGN;
1.178 schwarze 3262: }
3263:
1.262 schwarze 3264: while (isspace((unsigned char)buf->buf[pos]))
3265: pos++;
3266:
3267: /*
3268: * Arm the input line trap.
3269: * Special-casing "an-trap" is an ugly workaround to cope
3270: * with DocBook stupidly fiddling with man(7) internals.
3271: */
1.261 schwarze 3272:
1.178 schwarze 3273: roffit_lines = iv;
1.262 schwarze 3274: roffit_macro = mandoc_strdup(iv != 1 ||
3275: strcmp(buf->buf + pos, "an-trap") ?
3276: buf->buf + pos : "br");
1.277 schwarze 3277: return ROFF_IGN;
1.175 schwarze 3278: }
3279:
1.340 schwarze 3280: static int
1.175 schwarze 3281: roff_Dd(ROFF_ARGS)
3282: {
1.315 schwarze 3283: int mask;
3284: enum roff_tok t, te;
1.227 schwarze 3285:
1.315 schwarze 3286: switch (tok) {
3287: case ROFF_Dd:
3288: tok = MDOC_Dd;
3289: te = MDOC_MAX;
3290: if (r->format == 0)
3291: r->format = MPARSE_MDOC;
3292: mask = MPARSE_MDOC | MPARSE_QUICK;
3293: break;
3294: case ROFF_TH:
3295: tok = MAN_TH;
3296: te = MAN_MAX;
3297: if (r->format == 0)
3298: r->format = MPARSE_MAN;
3299: mask = MPARSE_QUICK;
3300: break;
3301: default:
3302: abort();
3303: }
3304: if ((r->options & mask) == 0)
3305: for (t = tok; t < te; t++)
3306: roff_setstr(r, roff_name[t], NULL, 0);
1.277 schwarze 3307: return ROFF_CONT;
1.109 kristaps 3308: }
3309:
1.340 schwarze 3310: static int
1.109 kristaps 3311: roff_TE(ROFF_ARGS)
3312: {
1.361 schwarze 3313: r->man->flags &= ~ROFF_NONOFILL;
1.321 schwarze 3314: if (r->tbl == NULL) {
1.350 schwarze 3315: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "TE");
1.321 schwarze 3316: return ROFF_IGN;
3317: }
1.346 schwarze 3318: if (tbl_end(r->tbl, 0) == 0) {
1.321 schwarze 3319: r->tbl = NULL;
1.258 schwarze 3320: free(buf->buf);
3321: buf->buf = mandoc_strdup(".sp");
3322: buf->sz = 4;
1.329 schwarze 3323: *offs = 0;
1.277 schwarze 3324: return ROFF_REPARSE;
1.258 schwarze 3325: }
1.321 schwarze 3326: r->tbl = NULL;
1.277 schwarze 3327: return ROFF_IGN;
1.112 kristaps 3328: }
3329:
1.340 schwarze 3330: static int
1.112 kristaps 3331: roff_T_(ROFF_ARGS)
3332: {
3333:
3334: if (NULL == r->tbl)
1.350 schwarze 3335: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "T&");
1.112 kristaps 3336: else
1.296 schwarze 3337: tbl_restart(ln, ppos, r->tbl);
1.112 kristaps 3338:
1.277 schwarze 3339: return ROFF_IGN;
1.109 kristaps 3340: }
3341:
1.230 schwarze 3342: /*
3343: * Handle in-line equation delimiters.
3344: */
1.340 schwarze 3345: static int
1.238 schwarze 3346: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.151 kristaps 3347: {
1.233 schwarze 3348: char *cp1, *cp2;
3349: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.151 kristaps 3350:
1.230 schwarze 3351: /*
3352: * Outside equations, look for an opening delimiter.
3353: * If we are inside an equation, we already know it is
3354: * in-line, or this function wouldn't have been called;
3355: * so look for a closing delimiter.
3356: */
3357:
1.238 schwarze 3358: cp1 = buf->buf + pos;
1.230 schwarze 3359: cp2 = strchr(cp1, r->eqn == NULL ?
3360: r->last_eqn->odelim : r->last_eqn->cdelim);
3361: if (cp2 == NULL)
1.277 schwarze 3362: return ROFF_CONT;
1.230 schwarze 3363:
1.233 schwarze 3364: *cp2++ = '\0';
3365: bef_pr = bef_nl = aft_nl = aft_pr = "";
3366:
3367: /* Handle preceding text, protecting whitespace. */
3368:
1.238 schwarze 3369: if (*buf->buf != '\0') {
1.233 schwarze 3370: if (r->eqn == NULL)
3371: bef_pr = "\\&";
3372: bef_nl = "\n";
3373: }
3374:
3375: /*
3376: * Prepare replacing the delimiter with an equation macro
3377: * and drop leading white space from the equation.
3378: */
1.230 schwarze 3379:
1.233 schwarze 3380: if (r->eqn == NULL) {
3381: while (*cp2 == ' ')
3382: cp2++;
3383: mac = ".EQ";
3384: } else
3385: mac = ".EN";
3386:
3387: /* Handle following text, protecting whitespace. */
3388:
3389: if (*cp2 != '\0') {
3390: aft_nl = "\n";
3391: if (r->eqn != NULL)
3392: aft_pr = "\\&";
3393: }
3394:
3395: /* Do the actual replacement. */
3396:
1.238 schwarze 3397: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.233 schwarze 3398: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.238 schwarze 3399: free(buf->buf);
3400: buf->buf = cp1;
1.230 schwarze 3401:
3402: /* Toggle the in-line state of the eqn subsystem. */
3403:
3404: r->eqn_inline = r->eqn == NULL;
1.277 schwarze 3405: return ROFF_REPARSE;
1.151 kristaps 3406: }
3407:
1.340 schwarze 3408: static int
1.235 schwarze 3409: roff_EQ(ROFF_ARGS)
1.125 kristaps 3410: {
1.319 schwarze 3411: struct roff_node *n;
3412:
1.356 schwarze 3413: if (r->man->meta.macroset == MACROSET_MAN)
1.322 schwarze 3414: man_breakscope(r->man, ROFF_EQ);
1.319 schwarze 3415: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
3416: if (ln > r->man->last->line)
3417: n->flags |= NODE_LINE;
1.348 schwarze 3418: n->eqn = eqn_box_new();
1.319 schwarze 3419: roff_node_append(r->man, n);
3420: r->man->next = ROFF_NEXT_SIBLING;
1.125 kristaps 3421:
1.238 schwarze 3422: assert(r->eqn == NULL);
1.319 schwarze 3423: if (r->last_eqn == NULL)
1.351 schwarze 3424: r->last_eqn = eqn_alloc();
1.319 schwarze 3425: else
3426: eqn_reset(r->last_eqn);
3427: r->eqn = r->last_eqn;
3428: r->eqn->node = n;
1.151 kristaps 3429:
1.238 schwarze 3430: if (buf->buf[pos] != '\0')
1.350 schwarze 3431: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.238 schwarze 3432: ".EQ %s", buf->buf + pos);
1.151 kristaps 3433:
1.277 schwarze 3434: return ROFF_IGN;
1.125 kristaps 3435: }
3436:
1.340 schwarze 3437: static int
1.125 kristaps 3438: roff_EN(ROFF_ARGS)
3439: {
1.319 schwarze 3440: if (r->eqn != NULL) {
3441: eqn_parse(r->eqn);
3442: r->eqn = NULL;
3443: } else
1.350 schwarze 3444: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "EN");
1.319 schwarze 3445: if (buf->buf[pos] != '\0')
1.350 schwarze 3446: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.319 schwarze 3447: "EN %s", buf->buf + pos);
1.277 schwarze 3448: return ROFF_IGN;
1.125 kristaps 3449: }
3450:
1.340 schwarze 3451: static int
1.109 kristaps 3452: roff_TS(ROFF_ARGS)
3453: {
1.321 schwarze 3454: if (r->tbl != NULL) {
1.350 schwarze 3455: mandoc_msg(MANDOCERR_BLK_BROKEN, ln, ppos, "TS breaks TS");
1.346 schwarze 3456: tbl_end(r->tbl, 0);
1.115 kristaps 3457: }
1.361 schwarze 3458: r->man->flags |= ROFF_NONOFILL;
1.351 schwarze 3459: r->tbl = tbl_alloc(ppos, ln, r->last_tbl);
1.346 schwarze 3460: if (r->last_tbl == NULL)
1.321 schwarze 3461: r->first_tbl = r->tbl;
3462: r->last_tbl = r->tbl;
1.297 schwarze 3463: return ROFF_IGN;
3464: }
3465:
1.340 schwarze 3466: static int
1.358 schwarze 3467: roff_noarg(ROFF_ARGS)
3468: {
3469: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3470: man_breakscope(r->man, tok);
3471: if (tok == ROFF_brp)
3472: tok = ROFF_br;
3473: roff_elem_alloc(r->man, ln, ppos, tok);
3474: if (buf->buf[pos] != '\0')
3475: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
3476: "%s %s", roff_name[tok], buf->buf + pos);
3477: if (tok == ROFF_nf)
3478: r->man->flags |= ROFF_NOFILL;
3479: else if (tok == ROFF_fi)
3480: r->man->flags &= ~ROFF_NOFILL;
3481: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3482: r->man->next = ROFF_NEXT_SIBLING;
3483: return ROFF_IGN;
3484: }
3485:
3486: static int
1.297 schwarze 3487: roff_onearg(ROFF_ARGS)
3488: {
3489: struct roff_node *n;
3490: char *cp;
1.305 schwarze 3491: int npos;
1.297 schwarze 3492:
1.302 schwarze 3493: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.320 schwarze 3494: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
3495: tok == ROFF_ti))
1.302 schwarze 3496: man_breakscope(r->man, tok);
3497:
1.309 schwarze 3498: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.305 schwarze 3499: r->man->last = roffce_node;
3500: r->man->next = ROFF_NEXT_SIBLING;
3501: }
3502:
1.297 schwarze 3503: roff_elem_alloc(r->man, ln, ppos, tok);
3504: n = r->man->last;
3505:
3506: cp = buf->buf + pos;
3507: if (*cp != '\0') {
3508: while (*cp != '\0' && *cp != ' ')
3509: cp++;
3510: while (*cp == ' ')
3511: *cp++ = '\0';
3512: if (*cp != '\0')
1.350 schwarze 3513: mandoc_msg(MANDOCERR_ARG_EXCESS,
3514: ln, (int)(cp - buf->buf),
1.297 schwarze 3515: "%s ... %s", roff_name[tok], cp);
3516: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.300 schwarze 3517: }
3518:
1.309 schwarze 3519: if (tok == ROFF_ce || tok == ROFF_rj) {
3520: if (r->man->last->type == ROFFT_ELEM) {
1.305 schwarze 3521: roff_word_alloc(r->man, ln, pos, "1");
3522: r->man->last->flags |= NODE_NOSRC;
3523: }
3524: npos = 0;
3525: if (roff_evalnum(r, ln, r->man->last->string, &npos,
3526: &roffce_lines, 0) == 0) {
1.350 schwarze 3527: mandoc_msg(MANDOCERR_CE_NONUM,
3528: ln, pos, "ce %s", buf->buf + pos);
1.305 schwarze 3529: roffce_lines = 1;
3530: }
3531: if (roffce_lines < 1) {
3532: r->man->last = r->man->last->parent;
3533: roffce_node = NULL;
3534: roffce_lines = 0;
3535: } else
3536: roffce_node = r->man->last->parent;
3537: } else {
3538: n->flags |= NODE_VALID | NODE_ENDED;
3539: r->man->last = n;
3540: }
3541: n->flags |= NODE_LINE;
1.300 schwarze 3542: r->man->next = ROFF_NEXT_SIBLING;
3543: return ROFF_IGN;
3544: }
3545:
1.340 schwarze 3546: static int
1.300 schwarze 3547: roff_manyarg(ROFF_ARGS)
3548: {
3549: struct roff_node *n;
3550: char *sp, *ep;
3551:
3552: roff_elem_alloc(r->man, ln, ppos, tok);
3553: n = r->man->last;
3554:
3555: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3556: while (*ep != '\0' && *ep != ' ')
3557: ep++;
3558: while (*ep == ' ')
3559: *ep++ = '\0';
3560: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.297 schwarze 3561: }
3562:
3563: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3564: r->man->last = n;
3565: r->man->next = ROFF_NEXT_SIBLING;
1.277 schwarze 3566: return ROFF_IGN;
1.251 schwarze 3567: }
3568:
1.340 schwarze 3569: static int
1.311 schwarze 3570: roff_als(ROFF_ARGS)
3571: {
3572: char *oldn, *newn, *end, *value;
3573: size_t oldsz, newsz, valsz;
3574:
3575: newn = oldn = buf->buf + pos;
3576: if (*newn == '\0')
3577: return ROFF_IGN;
3578:
3579: newsz = roff_getname(r, &oldn, ln, pos);
1.363 schwarze 3580: if (newn[newsz] == '\\' || newn[newsz] == '\t' || *oldn == '\0')
1.311 schwarze 3581: return ROFF_IGN;
3582:
3583: end = oldn;
3584: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3585: if (oldsz == 0)
3586: return ROFF_IGN;
3587:
1.338 schwarze 3588: valsz = mandoc_asprintf(&value, ".%.*s \\$@\\\"\n",
1.315 schwarze 3589: (int)oldsz, oldn);
1.311 schwarze 3590: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3591: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3592: free(value);
1.364 schwarze 3593: return ROFF_IGN;
3594: }
3595:
3596: /*
3597: * The .break request only makes sense inside conditionals,
3598: * and that case is already handled in roff_cond_sub().
3599: */
3600: static int
3601: roff_break(ROFF_ARGS)
3602: {
3603: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, pos, "break");
1.296 schwarze 3604: return ROFF_IGN;
1.92 schwarze 3605: }
3606:
1.340 schwarze 3607: static int
1.174 kristaps 3608: roff_cc(ROFF_ARGS)
3609: {
3610: const char *p;
3611:
1.238 schwarze 3612: p = buf->buf + pos;
1.174 kristaps 3613:
1.238 schwarze 3614: if (*p == '\0' || (r->control = *p++) == '.')
1.303 schwarze 3615: r->control = '\0';
1.174 kristaps 3616:
1.238 schwarze 3617: if (*p != '\0')
1.350 schwarze 3618: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.260 schwarze 3619: ln, p - buf->buf, "cc ... %s", p);
1.174 kristaps 3620:
1.341 schwarze 3621: return ROFF_IGN;
3622: }
3623:
3624: static int
3625: roff_char(ROFF_ARGS)
3626: {
3627: const char *p, *kp, *vp;
3628: size_t ksz, vsz;
3629: int font;
3630:
3631: /* Parse the character to be replaced. */
3632:
3633: kp = buf->buf + pos;
3634: p = kp + 1;
3635: if (*kp == '\0' || (*kp == '\\' &&
3636: mandoc_escape(&p, NULL, NULL) != ESCAPE_SPECIAL) ||
3637: (*p != ' ' && *p != '\0')) {
1.350 schwarze 3638: mandoc_msg(MANDOCERR_CHAR_ARG, ln, pos, "char %s", kp);
1.341 schwarze 3639: return ROFF_IGN;
3640: }
3641: ksz = p - kp;
3642: while (*p == ' ')
3643: p++;
3644:
3645: /*
3646: * If the replacement string contains a font escape sequence,
3647: * we have to restore the font at the end.
3648: */
3649:
3650: vp = p;
3651: vsz = strlen(p);
3652: font = 0;
3653: while (*p != '\0') {
3654: if (*p++ != '\\')
3655: continue;
3656: switch (mandoc_escape(&p, NULL, NULL)) {
3657: case ESCAPE_FONT:
3658: case ESCAPE_FONTROMAN:
3659: case ESCAPE_FONTITALIC:
3660: case ESCAPE_FONTBOLD:
3661: case ESCAPE_FONTBI:
1.342 schwarze 3662: case ESCAPE_FONTCW:
1.341 schwarze 3663: case ESCAPE_FONTPREV:
3664: font++;
3665: break;
3666: default:
3667: break;
3668: }
3669: }
3670: if (font > 1)
1.350 schwarze 3671: mandoc_msg(MANDOCERR_CHAR_FONT,
3672: ln, (int)(vp - buf->buf), "%s", vp);
1.341 schwarze 3673:
3674: /*
3675: * Approximate the effect of .char using the .tr tables.
3676: * XXX In groff, .char and .tr interact differently.
3677: */
3678:
3679: if (ksz == 1) {
3680: if (r->xtab == NULL)
3681: r->xtab = mandoc_calloc(128, sizeof(*r->xtab));
3682: assert((unsigned int)*kp < 128);
3683: free(r->xtab[(int)*kp].p);
3684: r->xtab[(int)*kp].sz = mandoc_asprintf(&r->xtab[(int)*kp].p,
3685: "%s%s", vp, font ? "\fP" : "");
3686: } else {
3687: roff_setstrn(&r->xmbtab, kp, ksz, vp, vsz, 0);
3688: if (font)
3689: roff_setstrn(&r->xmbtab, kp, ksz, "\\fP", 3, 1);
3690: }
1.277 schwarze 3691: return ROFF_IGN;
1.174 kristaps 3692: }
3693:
1.340 schwarze 3694: static int
1.303 schwarze 3695: roff_ec(ROFF_ARGS)
3696: {
3697: const char *p;
3698:
3699: p = buf->buf + pos;
3700: if (*p == '\0')
3701: r->escape = '\\';
3702: else {
3703: r->escape = *p;
3704: if (*++p != '\0')
1.350 schwarze 3705: mandoc_msg(MANDOCERR_ARG_EXCESS, ln,
3706: (int)(p - buf->buf), "ec ... %s", p);
1.303 schwarze 3707: }
3708: return ROFF_IGN;
3709: }
3710:
1.340 schwarze 3711: static int
1.303 schwarze 3712: roff_eo(ROFF_ARGS)
3713: {
3714: r->escape = '\0';
3715: if (buf->buf[pos] != '\0')
1.350 schwarze 3716: mandoc_msg(MANDOCERR_ARG_SKIP,
1.303 schwarze 3717: ln, pos, "eo %s", buf->buf + pos);
3718: return ROFF_IGN;
1.330 schwarze 3719: }
3720:
1.340 schwarze 3721: static int
1.330 schwarze 3722: roff_nop(ROFF_ARGS)
3723: {
3724: while (buf->buf[pos] == ' ')
3725: pos++;
3726: *offs = pos;
3727: return ROFF_RERUN;
1.303 schwarze 3728: }
3729:
1.340 schwarze 3730: static int
1.164 kristaps 3731: roff_tr(ROFF_ARGS)
3732: {
3733: const char *p, *first, *second;
3734: size_t fsz, ssz;
3735: enum mandoc_esc esc;
3736:
1.238 schwarze 3737: p = buf->buf + pos;
1.164 kristaps 3738:
1.238 schwarze 3739: if (*p == '\0') {
1.350 schwarze 3740: mandoc_msg(MANDOCERR_REQ_EMPTY, ln, ppos, "tr");
1.277 schwarze 3741: return ROFF_IGN;
1.164 kristaps 3742: }
3743:
1.238 schwarze 3744: while (*p != '\0') {
1.164 kristaps 3745: fsz = ssz = 1;
3746:
3747: first = p++;
1.238 schwarze 3748: if (*first == '\\') {
1.164 kristaps 3749: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3750: if (esc == ESCAPE_ERROR) {
1.350 schwarze 3751: mandoc_msg(MANDOCERR_ESC_BAD, ln,
3752: (int)(p - buf->buf), "%s", first);
1.277 schwarze 3753: return ROFF_IGN;
1.164 kristaps 3754: }
3755: fsz = (size_t)(p - first);
3756: }
3757:
3758: second = p++;
1.238 schwarze 3759: if (*second == '\\') {
1.164 kristaps 3760: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3761: if (esc == ESCAPE_ERROR) {
1.350 schwarze 3762: mandoc_msg(MANDOCERR_ESC_BAD, ln,
3763: (int)(p - buf->buf), "%s", second);
1.277 schwarze 3764: return ROFF_IGN;
1.164 kristaps 3765: }
3766: ssz = (size_t)(p - second);
1.238 schwarze 3767: } else if (*second == '\0') {
1.350 schwarze 3768: mandoc_msg(MANDOCERR_TR_ODD, ln,
3769: (int)(first - buf->buf), "tr %s", first);
1.164 kristaps 3770: second = " ";
1.165 kristaps 3771: p--;
1.164 kristaps 3772: }
3773:
1.167 kristaps 3774: if (fsz > 1) {
1.207 schwarze 3775: roff_setstrn(&r->xmbtab, first, fsz,
3776: second, ssz, 0);
1.167 kristaps 3777: continue;
3778: }
3779:
1.238 schwarze 3780: if (r->xtab == NULL)
1.207 schwarze 3781: r->xtab = mandoc_calloc(128,
3782: sizeof(struct roffstr));
1.167 kristaps 3783:
3784: free(r->xtab[(int)*first].p);
3785: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3786: r->xtab[(int)*first].sz = ssz;
1.164 kristaps 3787: }
3788:
1.277 schwarze 3789: return ROFF_IGN;
1.164 kristaps 3790: }
3791:
1.339 schwarze 3792: /*
3793: * Implementation of the .return request.
3794: * There is no need to call roff_userret() from here.
3795: * The read module will call that after rewinding the reader stack
3796: * to the place from where the current macro was called.
3797: */
1.340 schwarze 3798: static int
1.339 schwarze 3799: roff_return(ROFF_ARGS)
3800: {
3801: if (r->mstackpos >= 0)
1.340 schwarze 3802: return ROFF_IGN | ROFF_USERRET;
1.339 schwarze 3803:
1.350 schwarze 3804: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "return");
1.339 schwarze 3805: return ROFF_IGN;
3806: }
3807:
1.340 schwarze 3808: static int
1.306 schwarze 3809: roff_rn(ROFF_ARGS)
3810: {
3811: const char *value;
3812: char *oldn, *newn, *end;
3813: size_t oldsz, newsz;
1.315 schwarze 3814: int deftype;
1.306 schwarze 3815:
3816: oldn = newn = buf->buf + pos;
3817: if (*oldn == '\0')
3818: return ROFF_IGN;
3819:
3820: oldsz = roff_getname(r, &newn, ln, pos);
1.363 schwarze 3821: if (oldn[oldsz] == '\\' || oldn[oldsz] == '\t' || *newn == '\0')
1.306 schwarze 3822: return ROFF_IGN;
3823:
3824: end = newn;
3825: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3826: if (newsz == 0)
3827: return ROFF_IGN;
3828:
1.315 schwarze 3829: deftype = ROFFDEF_ANY;
3830: value = roff_getstrn(r, oldn, oldsz, &deftype);
3831: switch (deftype) {
3832: case ROFFDEF_USER:
1.306 schwarze 3833: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3834: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3835: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.315 schwarze 3836: break;
3837: case ROFFDEF_PRE:
3838: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3839: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3840: break;
3841: case ROFFDEF_REN:
1.306 schwarze 3842: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3843: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.315 schwarze 3844: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3845: break;
3846: case ROFFDEF_STD:
1.306 schwarze 3847: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.315 schwarze 3848: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3849: break;
3850: default:
3851: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3852: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3853: break;
3854: }
1.306 schwarze 3855: return ROFF_IGN;
3856: }
3857:
1.340 schwarze 3858: static int
1.339 schwarze 3859: roff_shift(ROFF_ARGS)
3860: {
3861: struct mctx *ctx;
3862: int levels, i;
3863:
3864: levels = 1;
3865: if (buf->buf[pos] != '\0' &&
3866: roff_evalnum(r, ln, buf->buf, &pos, &levels, 0) == 0) {
1.350 schwarze 3867: mandoc_msg(MANDOCERR_CE_NONUM,
1.339 schwarze 3868: ln, pos, "shift %s", buf->buf + pos);
3869: levels = 1;
3870: }
3871: if (r->mstackpos < 0) {
1.350 schwarze 3872: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "shift");
1.339 schwarze 3873: return ROFF_IGN;
3874: }
3875: ctx = r->mstack + r->mstackpos;
3876: if (levels > ctx->argc) {
1.350 schwarze 3877: mandoc_msg(MANDOCERR_SHIFT,
1.339 schwarze 3878: ln, pos, "%d, but max is %d", levels, ctx->argc);
3879: levels = ctx->argc;
3880: }
3881: if (levels == 0)
3882: return ROFF_IGN;
3883: for (i = 0; i < levels; i++)
3884: free(ctx->argv[i]);
3885: ctx->argc -= levels;
3886: for (i = 0; i < ctx->argc; i++)
3887: ctx->argv[i] = ctx->argv[i + levels];
3888: return ROFF_IGN;
3889: }
3890:
1.340 schwarze 3891: static int
1.105 kristaps 3892: roff_so(ROFF_ARGS)
3893: {
1.249 schwarze 3894: char *name, *cp;
1.105 kristaps 3895:
1.238 schwarze 3896: name = buf->buf + pos;
1.350 schwarze 3897: mandoc_msg(MANDOCERR_SO, ln, ppos, "so %s", name);
1.105 kristaps 3898:
3899: /*
3900: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3901: * opening anything that's not in our cwd or anything beneath
3902: * it. Thus, explicitly disallow traversing up the file-system
3903: * or using absolute paths.
3904: */
3905:
1.238 schwarze 3906: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.350 schwarze 3907: mandoc_msg(MANDOCERR_SO_PATH, ln, ppos, ".so %s", name);
1.249 schwarze 3908: buf->sz = mandoc_asprintf(&cp,
3909: ".sp\nSee the file %s.\n.sp", name) + 1;
3910: free(buf->buf);
3911: buf->buf = cp;
3912: *offs = 0;
1.277 schwarze 3913: return ROFF_REPARSE;
1.105 kristaps 3914: }
3915:
3916: *offs = pos;
1.277 schwarze 3917: return ROFF_SO;
1.105 kristaps 3918: }
1.92 schwarze 3919:
1.266 schwarze 3920: /* --- user defined strings and macros ------------------------------------ */
3921:
1.340 schwarze 3922: static int
1.106 kristaps 3923: roff_userdef(ROFF_ARGS)
1.99 kristaps 3924: {
1.339 schwarze 3925: struct mctx *ctx;
3926: char *arg, *ap, *dst, *src;
3927: size_t sz;
3928:
1.365 schwarze 3929: /* If the macro is empty, ignore it altogether. */
3930:
3931: if (*r->current_string == '\0')
3932: return ROFF_IGN;
3933:
1.339 schwarze 3934: /* Initialize a new macro stack context. */
3935:
3936: if (++r->mstackpos == r->mstacksz) {
3937: r->mstack = mandoc_recallocarray(r->mstack,
3938: r->mstacksz, r->mstacksz + 8, sizeof(*r->mstack));
3939: r->mstacksz += 8;
3940: }
3941: ctx = r->mstack + r->mstackpos;
3942: ctx->argsz = 0;
3943: ctx->argc = 0;
3944: ctx->argv = NULL;
3945:
3946: /*
3947: * Collect pointers to macro argument strings,
3948: * NUL-terminating them and escaping quotes.
3949: */
3950:
3951: src = buf->buf + pos;
3952: while (*src != '\0') {
3953: if (ctx->argc == ctx->argsz) {
3954: ctx->argsz += 8;
3955: ctx->argv = mandoc_reallocarray(ctx->argv,
3956: ctx->argsz, sizeof(*ctx->argv));
3957: }
1.355 schwarze 3958: arg = roff_getarg(r, &src, ln, &pos);
1.339 schwarze 3959: sz = 1; /* For the terminating NUL. */
3960: for (ap = arg; *ap != '\0'; ap++)
3961: sz += *ap == '"' ? 4 : 1;
3962: ctx->argv[ctx->argc++] = dst = mandoc_malloc(sz);
3963: for (ap = arg; *ap != '\0'; ap++) {
3964: if (*ap == '"') {
3965: memcpy(dst, "\\(dq", 4);
3966: dst += 4;
3967: } else
3968: *dst++ = *ap;
1.106 kristaps 3969: }
1.339 schwarze 3970: *dst = '\0';
1.355 schwarze 3971: free(arg);
1.337 schwarze 3972: }
3973:
1.339 schwarze 3974: /* Replace the macro invocation by the macro definition. */
1.263 schwarze 3975:
1.238 schwarze 3976: free(buf->buf);
1.339 schwarze 3977: buf->buf = mandoc_strdup(r->current_string);
3978: buf->sz = strlen(buf->buf) + 1;
1.248 schwarze 3979: *offs = 0;
1.106 kristaps 3980:
1.365 schwarze 3981: return buf->buf[buf->sz - 2] == '\n' ?
1.340 schwarze 3982: ROFF_REPARSE | ROFF_USERCALL : ROFF_IGN | ROFF_APPEND;
1.99 kristaps 3983: }
1.121 schwarze 3984:
1.306 schwarze 3985: /*
3986: * Calling a high-level macro that was renamed with .rn.
3987: * r->current_string has already been set up by roff_parse().
3988: */
1.340 schwarze 3989: static int
1.306 schwarze 3990: roff_renamed(ROFF_ARGS)
3991: {
3992: char *nbuf;
3993:
1.315 schwarze 3994: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
3995: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.306 schwarze 3996: free(buf->buf);
3997: buf->buf = nbuf;
1.329 schwarze 3998: *offs = 0;
1.306 schwarze 3999: return ROFF_CONT;
4000: }
4001:
1.362 schwarze 4002: /*
4003: * Measure the length in bytes of the roff identifier at *cpp
4004: * and advance the pointer to the next word.
4005: */
1.212 schwarze 4006: static size_t
1.121 schwarze 4007: roff_getname(struct roff *r, char **cpp, int ln, int pos)
4008: {
4009: char *name, *cp;
1.212 schwarze 4010: size_t namesz;
1.121 schwarze 4011:
4012: name = *cpp;
1.362 schwarze 4013: if (*name == '\0')
1.277 schwarze 4014: return 0;
1.121 schwarze 4015:
1.362 schwarze 4016: /* Advance cp to the byte after the end of the name. */
4017:
1.212 schwarze 4018: for (cp = name; 1; cp++) {
1.362 schwarze 4019: namesz = cp - name;
1.363 schwarze 4020: if (*cp == '\0')
1.212 schwarze 4021: break;
1.363 schwarze 4022: if (*cp == ' ' || *cp == '\t') {
4023: cp++;
4024: break;
4025: }
1.362 schwarze 4026: if (*cp != '\\')
1.121 schwarze 4027: continue;
1.362 schwarze 4028: if (cp[1] == '{' || cp[1] == '}')
1.215 schwarze 4029: break;
1.362 schwarze 4030: if (*++cp == '\\')
1.121 schwarze 4031: continue;
1.350 schwarze 4032: mandoc_msg(MANDOCERR_NAMESC, ln, pos,
1.224 schwarze 4033: "%.*s", (int)(cp - name + 1), name);
1.212 schwarze 4034: mandoc_escape((const char **)&cp, NULL, NULL);
4035: break;
1.121 schwarze 4036: }
4037:
4038: /* Read past spaces. */
1.362 schwarze 4039:
4040: while (*cp == ' ')
1.121 schwarze 4041: cp++;
4042:
4043: *cpp = cp;
1.277 schwarze 4044: return namesz;
1.121 schwarze 4045: }
4046:
1.106 kristaps 4047: /*
4048: * Store *string into the user-defined string called *name.
4049: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.193 schwarze 4050: * append == 0: replace mode
4051: * append == 1: single-line append mode
4052: * append == 2: multiline append mode, append '\n' after each call
1.106 kristaps 4053: */
1.94 kristaps 4054: static void
1.106 kristaps 4055: roff_setstr(struct roff *r, const char *name, const char *string,
1.193 schwarze 4056: int append)
1.92 schwarze 4057: {
1.315 schwarze 4058: size_t namesz;
1.164 kristaps 4059:
1.315 schwarze 4060: namesz = strlen(name);
4061: roff_setstrn(&r->strtab, name, namesz, string,
1.207 schwarze 4062: string ? strlen(string) : 0, append);
1.315 schwarze 4063: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.164 kristaps 4064: }
4065:
4066: static void
1.166 kristaps 4067: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.193 schwarze 4068: const char *string, size_t stringsz, int append)
1.164 kristaps 4069: {
1.166 kristaps 4070: struct roffkv *n;
1.164 kristaps 4071: char *c;
4072: int i;
4073: size_t oldch, newch;
1.92 schwarze 4074:
1.106 kristaps 4075: /* Search for an existing string with the same name. */
1.164 kristaps 4076: n = *r;
4077:
1.211 schwarze 4078: while (n && (namesz != n->key.sz ||
4079: strncmp(n->key.p, name, namesz)))
1.92 schwarze 4080: n = n->next;
1.94 kristaps 4081:
4082: if (NULL == n) {
1.106 kristaps 4083: /* Create a new string table entry. */
1.166 kristaps 4084: n = mandoc_malloc(sizeof(struct roffkv));
4085: n->key.p = mandoc_strndup(name, namesz);
4086: n->key.sz = namesz;
4087: n->val.p = NULL;
4088: n->val.sz = 0;
1.164 kristaps 4089: n->next = *r;
4090: *r = n;
1.193 schwarze 4091: } else if (0 == append) {
1.166 kristaps 4092: free(n->val.p);
4093: n->val.p = NULL;
4094: n->val.sz = 0;
1.106 kristaps 4095: }
4096:
4097: if (NULL == string)
4098: return;
4099:
4100: /*
4101: * One additional byte for the '\n' in multiline mode,
4102: * and one for the terminating '\0'.
4103: */
1.193 schwarze 4104: newch = stringsz + (1 < append ? 2u : 1u);
1.164 kristaps 4105:
1.166 kristaps 4106: if (NULL == n->val.p) {
4107: n->val.p = mandoc_malloc(newch);
4108: *n->val.p = '\0';
1.106 kristaps 4109: oldch = 0;
4110: } else {
1.166 kristaps 4111: oldch = n->val.sz;
4112: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.106 kristaps 4113: }
4114:
4115: /* Skip existing content in the destination buffer. */
1.166 kristaps 4116: c = n->val.p + (int)oldch;
1.106 kristaps 4117:
4118: /* Append new content to the destination buffer. */
1.164 kristaps 4119: i = 0;
4120: while (i < (int)stringsz) {
1.106 kristaps 4121: /*
4122: * Rudimentary roff copy mode:
4123: * Handle escaped backslashes.
4124: */
1.164 kristaps 4125: if ('\\' == string[i] && '\\' == string[i + 1])
4126: i++;
4127: *c++ = string[i++];
1.106 kristaps 4128: }
1.94 kristaps 4129:
1.106 kristaps 4130: /* Append terminating bytes. */
1.193 schwarze 4131: if (1 < append)
1.106 kristaps 4132: *c++ = '\n';
1.163 kristaps 4133:
1.106 kristaps 4134: *c = '\0';
1.166 kristaps 4135: n->val.sz = (int)(c - n->val.p);
1.92 schwarze 4136: }
4137:
1.94 kristaps 4138: static const char *
1.325 schwarze 4139: roff_getstrn(struct roff *r, const char *name, size_t len,
1.315 schwarze 4140: int *deftype)
1.92 schwarze 4141: {
1.315 schwarze 4142: const struct roffkv *n;
1.325 schwarze 4143: int found, i;
1.315 schwarze 4144: enum roff_tok tok;
4145:
1.325 schwarze 4146: found = 0;
4147: for (n = r->strtab; n != NULL; n = n->next) {
4148: if (strncmp(name, n->key.p, len) != 0 ||
4149: n->key.p[len] != '\0' || n->val.p == NULL)
4150: continue;
4151: if (*deftype & ROFFDEF_USER) {
4152: *deftype = ROFFDEF_USER;
4153: return n->val.p;
4154: } else {
4155: found = 1;
4156: break;
4157: }
4158: }
4159: for (n = r->rentab; n != NULL; n = n->next) {
4160: if (strncmp(name, n->key.p, len) != 0 ||
4161: n->key.p[len] != '\0' || n->val.p == NULL)
4162: continue;
4163: if (*deftype & ROFFDEF_REN) {
4164: *deftype = ROFFDEF_REN;
4165: return n->val.p;
4166: } else {
4167: found = 1;
4168: break;
1.315 schwarze 4169: }
4170: }
1.325 schwarze 4171: for (i = 0; i < PREDEFS_MAX; i++) {
4172: if (strncmp(name, predefs[i].name, len) != 0 ||
4173: predefs[i].name[len] != '\0')
4174: continue;
4175: if (*deftype & ROFFDEF_PRE) {
4176: *deftype = ROFFDEF_PRE;
4177: return predefs[i].str;
4178: } else {
4179: found = 1;
4180: break;
1.315 schwarze 4181: }
4182: }
1.356 schwarze 4183: if (r->man->meta.macroset != MACROSET_MAN) {
1.325 schwarze 4184: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
4185: if (strncmp(name, roff_name[tok], len) != 0 ||
4186: roff_name[tok][len] != '\0')
4187: continue;
4188: if (*deftype & ROFFDEF_STD) {
4189: *deftype = ROFFDEF_STD;
4190: return NULL;
4191: } else {
4192: found = 1;
4193: break;
1.315 schwarze 4194: }
4195: }
4196: }
1.356 schwarze 4197: if (r->man->meta.macroset != MACROSET_MDOC) {
1.325 schwarze 4198: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
4199: if (strncmp(name, roff_name[tok], len) != 0 ||
4200: roff_name[tok][len] != '\0')
4201: continue;
4202: if (*deftype & ROFFDEF_STD) {
4203: *deftype = ROFFDEF_STD;
4204: return NULL;
4205: } else {
4206: found = 1;
4207: break;
1.315 schwarze 4208: }
4209: }
1.325 schwarze 4210: }
4211:
4212: if (found == 0 && *deftype != ROFFDEF_ANY) {
4213: if (*deftype & ROFFDEF_REN) {
4214: /*
4215: * This might still be a request,
4216: * so do not treat it as undefined yet.
4217: */
4218: *deftype = ROFFDEF_UNDEF;
4219: return NULL;
1.315 schwarze 4220: }
1.325 schwarze 4221:
4222: /* Using an undefined string defines it to be empty. */
4223:
4224: roff_setstrn(&r->strtab, name, len, "", 0, 0);
4225: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.315 schwarze 4226: }
1.325 schwarze 4227:
1.315 schwarze 4228: *deftype = 0;
1.277 schwarze 4229: return NULL;
1.92 schwarze 4230: }
4231:
1.94 kristaps 4232: static void
1.167 kristaps 4233: roff_freestr(struct roffkv *r)
1.92 schwarze 4234: {
1.166 kristaps 4235: struct roffkv *n, *nn;
1.92 schwarze 4236:
1.167 kristaps 4237: for (n = r; n; n = nn) {
1.166 kristaps 4238: free(n->key.p);
4239: free(n->val.p);
1.92 schwarze 4240: nn = n->next;
4241: free(n);
4242: }
1.114 kristaps 4243: }
1.266 schwarze 4244:
4245: /* --- accessors and utility functions ------------------------------------ */
1.164 kristaps 4246:
4247: /*
4248: * Duplicate an input string, making the appropriate character
4249: * conversations (as stipulated by `tr') along the way.
4250: * Returns a heap-allocated string with all the replacements made.
4251: */
4252: char *
4253: roff_strdup(const struct roff *r, const char *p)
4254: {
1.166 kristaps 4255: const struct roffkv *cp;
1.164 kristaps 4256: char *res;
4257: const char *pp;
4258: size_t ssz, sz;
4259: enum mandoc_esc esc;
4260:
1.167 kristaps 4261: if (NULL == r->xmbtab && NULL == r->xtab)
1.277 schwarze 4262: return mandoc_strdup(p);
1.164 kristaps 4263: else if ('\0' == *p)
1.277 schwarze 4264: return mandoc_strdup("");
1.164 kristaps 4265:
4266: /*
4267: * Step through each character looking for term matches
4268: * (remember that a `tr' can be invoked with an escape, which is
4269: * a glyph but the escape is multi-character).
4270: * We only do this if the character hash has been initialised
4271: * and the string is >0 length.
4272: */
4273:
4274: res = NULL;
4275: ssz = 0;
4276:
4277: while ('\0' != *p) {
1.289 schwarze 4278: assert((unsigned int)*p < 128);
4279: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.167 kristaps 4280: sz = r->xtab[(int)*p].sz;
4281: res = mandoc_realloc(res, ssz + sz + 1);
4282: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
4283: ssz += sz;
4284: p++;
4285: continue;
4286: } else if ('\\' != *p) {
4287: res = mandoc_realloc(res, ssz + 2);
4288: res[ssz++] = *p++;
4289: continue;
4290: }
4291:
1.164 kristaps 4292: /* Search for term matches. */
1.167 kristaps 4293: for (cp = r->xmbtab; cp; cp = cp->next)
1.166 kristaps 4294: if (0 == strncmp(p, cp->key.p, cp->key.sz))
1.164 kristaps 4295: break;
4296:
4297: if (NULL != cp) {
4298: /*
4299: * A match has been found.
4300: * Append the match to the array and move
4301: * forward by its keysize.
4302: */
1.207 schwarze 4303: res = mandoc_realloc(res,
4304: ssz + cp->val.sz + 1);
1.166 kristaps 4305: memcpy(res + ssz, cp->val.p, cp->val.sz);
4306: ssz += cp->val.sz;
4307: p += (int)cp->key.sz;
1.164 kristaps 4308: continue;
4309: }
4310:
1.167 kristaps 4311: /*
4312: * Handle escapes carefully: we need to copy
4313: * over just the escape itself, or else we might
4314: * do replacements within the escape itself.
4315: * Make sure to pass along the bogus string.
4316: */
4317: pp = p++;
4318: esc = mandoc_escape(&p, NULL, NULL);
4319: if (ESCAPE_ERROR == esc) {
4320: sz = strlen(pp);
1.164 kristaps 4321: res = mandoc_realloc(res, ssz + sz + 1);
4322: memcpy(res + ssz, pp, sz);
1.167 kristaps 4323: break;
1.164 kristaps 4324: }
1.207 schwarze 4325: /*
4326: * We bail out on bad escapes.
1.167 kristaps 4327: * No need to warn: we already did so when
1.355 schwarze 4328: * roff_expand() was called.
1.167 kristaps 4329: */
4330: sz = (int)(p - pp);
4331: res = mandoc_realloc(res, ssz + sz + 1);
4332: memcpy(res + ssz, pp, sz);
4333: ssz += sz;
1.164 kristaps 4334: }
4335:
4336: res[(int)ssz] = '\0';
1.277 schwarze 4337: return res;
1.227 schwarze 4338: }
4339:
4340: int
4341: roff_getformat(const struct roff *r)
4342: {
4343:
1.277 schwarze 4344: return r->format;
1.174 kristaps 4345: }
4346:
4347: /*
1.207 schwarze 4348: * Find out whether a line is a macro line or not.
1.174 kristaps 4349: * If it is, adjust the current position and return one; if it isn't,
4350: * return zero and don't change the current position.
4351: * If the control character has been set with `.cc', then let that grain
4352: * precedence.
4353: * This is slighly contrary to groff, where using the non-breaking
4354: * control character when `cc' has been invoked will cause the
4355: * non-breaking macro contents to be printed verbatim.
4356: */
4357: int
4358: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
4359: {
4360: int pos;
4361:
4362: pos = *ppos;
4363:
1.303 schwarze 4364: if (r->control != '\0' && cp[pos] == r->control)
1.174 kristaps 4365: pos++;
1.303 schwarze 4366: else if (r->control != '\0')
1.277 schwarze 4367: return 0;
1.174 kristaps 4368: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
4369: pos += 2;
4370: else if ('.' == cp[pos] || '\'' == cp[pos])
4371: pos++;
4372: else
1.277 schwarze 4373: return 0;
1.174 kristaps 4374:
4375: while (' ' == cp[pos] || '\t' == cp[pos])
4376: pos++;
4377:
4378: *ppos = pos;
1.277 schwarze 4379: return 1;
1.74 kristaps 4380: }
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