Annotation of mandoc/roff.c, Revision 1.374
1.374 ! schwarze 1: /* $Id: roff.c,v 1.373 2020/04/06 10:16:17 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);
195: static int roff_cond_text(ROFF_ARGS);
196: static int roff_cond_sub(ROFF_ARGS);
197: static int roff_ds(ROFF_ARGS);
198: static int roff_ec(ROFF_ARGS);
199: static int roff_eo(ROFF_ARGS);
200: static int roff_eqndelim(struct roff *, struct buf *, int);
1.372 schwarze 201: static int roff_evalcond(struct roff *, int, char *, int *);
1.234 kristaps 202: static int roff_evalnum(struct roff *, int,
203: const char *, int *, int *, int);
204: static int roff_evalpar(struct roff *, int,
1.261 schwarze 205: const char *, int *, int *, int);
1.198 schwarze 206: static int roff_evalstrcond(const char *, int *);
1.355 schwarze 207: static int roff_expand(struct roff *, struct buf *,
208: int, int, char);
1.155 kristaps 209: static void roff_free1(struct roff *);
1.180 schwarze 210: static void roff_freereg(struct roffreg *);
1.167 kristaps 211: static void roff_freestr(struct roffkv *);
1.212 schwarze 212: static size_t roff_getname(struct roff *, char **, int, int);
1.261 schwarze 213: static int roff_getnum(const char *, int *, int *, int);
1.184 schwarze 214: static int roff_getop(const char *, int *, char *);
1.327 schwarze 215: static int roff_getregn(struct roff *,
216: const char *, size_t, char);
1.273 schwarze 217: static int roff_getregro(const struct roff *,
218: const char *name);
1.325 schwarze 219: static const char *roff_getstrn(struct roff *,
1.315 schwarze 220: const char *, size_t, int *);
1.271 schwarze 221: static int roff_hasregn(const struct roff *,
222: const char *, size_t);
1.340 schwarze 223: static int roff_insec(ROFF_ARGS);
224: static int roff_it(ROFF_ARGS);
225: static int roff_line_ignore(ROFF_ARGS);
1.265 schwarze 226: static void roff_man_alloc1(struct roff_man *);
227: static void roff_man_free1(struct roff_man *);
1.340 schwarze 228: static int roff_manyarg(ROFF_ARGS);
1.358 schwarze 229: static int roff_noarg(ROFF_ARGS);
1.340 schwarze 230: static int roff_nop(ROFF_ARGS);
231: static int roff_nr(ROFF_ARGS);
232: static int roff_onearg(ROFF_ARGS);
1.294 schwarze 233: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.214 schwarze 234: int, int);
1.340 schwarze 235: static int roff_parsetext(struct roff *, struct buf *,
1.305 schwarze 236: int, int *);
1.340 schwarze 237: static int roff_renamed(ROFF_ARGS);
238: static int roff_return(ROFF_ARGS);
239: static int roff_rm(ROFF_ARGS);
240: static int roff_rn(ROFF_ARGS);
241: static int roff_rr(ROFF_ARGS);
1.326 schwarze 242: static void roff_setregn(struct roff *, const char *,
1.327 schwarze 243: size_t, int, char, int);
1.94 kristaps 244: static void roff_setstr(struct roff *,
1.106 kristaps 245: const char *, const char *, int);
1.207 schwarze 246: static void roff_setstrn(struct roffkv **, const char *,
1.164 kristaps 247: size_t, const char *, size_t, int);
1.340 schwarze 248: static int roff_shift(ROFF_ARGS);
249: static int roff_so(ROFF_ARGS);
250: static int roff_tr(ROFF_ARGS);
251: static int roff_Dd(ROFF_ARGS);
252: static int roff_TE(ROFF_ARGS);
253: static int roff_TS(ROFF_ARGS);
254: static int roff_EQ(ROFF_ARGS);
255: static int roff_EN(ROFF_ARGS);
256: static int roff_T_(ROFF_ARGS);
257: static int roff_unsupp(ROFF_ARGS);
258: static int roff_userdef(ROFF_ARGS);
1.67 kristaps 259:
1.266 schwarze 260: /* --- constant data ------------------------------------------------------ */
261:
1.261 schwarze 262: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
263: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
264:
1.294 schwarze 265: const char *__roff_name[MAN_MAX + 1] = {
1.358 schwarze 266: "br", "ce", "fi", "ft",
267: "ll", "mc", "nf",
268: "po", "rj", "sp",
1.312 schwarze 269: "ta", "ti", NULL,
1.294 schwarze 270: "ab", "ad", "af", "aln",
271: "als", "am", "am1", "ami",
272: "ami1", "as", "as1", "asciify",
273: "backtrace", "bd", "bleedat", "blm",
274: "box", "boxa", "bp", "BP",
275: "break", "breakchar", "brnl", "brp",
1.305 schwarze 276: "brpnl", "c2", "cc",
1.294 schwarze 277: "cf", "cflags", "ch", "char",
278: "chop", "class", "close", "CL",
279: "color", "composite", "continue", "cp",
280: "cropat", "cs", "cu", "da",
281: "dch", "Dd", "de", "de1",
282: "defcolor", "dei", "dei1", "device",
283: "devicem", "di", "do", "ds",
284: "ds1", "dwh", "dt", "ec",
285: "ecr", "ecs", "el", "em",
286: "EN", "eo", "EP", "EQ",
287: "errprint", "ev", "evc", "ex",
288: "fallback", "fam", "fc", "fchar",
289: "fcolor", "fdeferlig", "feature", "fkern",
290: "fl", "flig", "fp", "fps",
291: "fschar", "fspacewidth", "fspecial", "ftr",
292: "fzoom", "gcolor", "hc", "hcode",
293: "hidechar", "hla", "hlm", "hpf",
294: "hpfa", "hpfcode", "hw", "hy",
295: "hylang", "hylen", "hym", "hypp",
296: "hys", "ie", "if", "ig",
297: "index", "it", "itc", "IX",
298: "kern", "kernafter", "kernbefore", "kernpair",
299: "lc", "lc_ctype", "lds", "length",
300: "letadj", "lf", "lg", "lhang",
301: "linetabs", "lnr", "lnrf", "lpfx",
1.304 schwarze 302: "ls", "lsm", "lt",
1.294 schwarze 303: "mediasize", "minss", "mk", "mso",
304: "na", "ne", "nh", "nhychar",
305: "nm", "nn", "nop", "nr",
306: "nrf", "nroff", "ns", "nx",
307: "open", "opena", "os", "output",
308: "padj", "papersize", "pc", "pev",
309: "pi", "PI", "pl", "pm",
1.312 schwarze 310: "pn", "pnr", "ps",
1.294 schwarze 311: "psbb", "pshape", "pso", "ptr",
312: "pvs", "rchar", "rd", "recursionlimit",
1.309 schwarze 313: "return", "rfschar", "rhang",
1.294 schwarze 314: "rm", "rn", "rnn", "rr",
315: "rs", "rt", "schar", "sentchar",
316: "shc", "shift", "sizes", "so",
317: "spacewidth", "special", "spreadwarn", "ss",
318: "sty", "substring", "sv", "sy",
1.300 schwarze 319: "T&", "tc", "TE",
1.301 schwarze 320: "TH", "tkf", "tl",
1.294 schwarze 321: "tm", "tm1", "tmc", "tr",
322: "track", "transchar", "trf", "trimat",
323: "trin", "trnt", "troff", "TS",
324: "uf", "ul", "unformat", "unwatch",
325: "unwatchn", "vpt", "vs", "warn",
326: "warnscale", "watch", "watchlength", "watchn",
327: "wh", "while", "write", "writec",
328: "writem", "xflag", ".", NULL,
1.306 schwarze 329: NULL, "text",
1.294 schwarze 330: "Dd", "Dt", "Os", "Sh",
331: "Ss", "Pp", "D1", "Dl",
332: "Bd", "Ed", "Bl", "El",
333: "It", "Ad", "An", "Ap",
334: "Ar", "Cd", "Cm", "Dv",
335: "Er", "Ev", "Ex", "Fa",
336: "Fd", "Fl", "Fn", "Ft",
337: "Ic", "In", "Li", "Nd",
338: "Nm", "Op", "Ot", "Pa",
339: "Rv", "St", "Va", "Vt",
340: "Xr", "%A", "%B", "%D",
341: "%I", "%J", "%N", "%O",
342: "%P", "%R", "%T", "%V",
343: "Ac", "Ao", "Aq", "At",
344: "Bc", "Bf", "Bo", "Bq",
345: "Bsx", "Bx", "Db", "Dc",
346: "Do", "Dq", "Ec", "Ef",
347: "Em", "Eo", "Fx", "Ms",
348: "No", "Ns", "Nx", "Ox",
349: "Pc", "Pf", "Po", "Pq",
350: "Qc", "Ql", "Qo", "Qq",
351: "Re", "Rs", "Sc", "So",
352: "Sq", "Sm", "Sx", "Sy",
353: "Tn", "Ux", "Xc", "Xo",
354: "Fo", "Fc", "Oo", "Oc",
355: "Bk", "Ek", "Bt", "Hf",
356: "Fr", "Ud", "Lb", "Lp",
357: "Lk", "Mt", "Brq", "Bro",
358: "Brc", "%C", "Es", "En",
1.299 schwarze 359: "Dx", "%Q", "%U", "Ta",
1.369 schwarze 360: "Tg", NULL,
1.294 schwarze 361: "TH", "SH", "SS", "TP",
1.332 schwarze 362: "TQ",
1.294 schwarze 363: "LP", "PP", "P", "IP",
364: "HP", "SM", "SB", "BI",
365: "IB", "BR", "RB", "R",
366: "B", "I", "IR", "RI",
367: "RE", "RS", "DT", "UC",
1.297 schwarze 368: "PD", "AT", "in",
1.333 schwarze 369: "SY", "YS", "OP",
370: "EX", "EE", "UR",
1.317 schwarze 371: "UE", "MT", "ME", NULL
1.294 schwarze 372: };
373: const char *const *roff_name = __roff_name;
374:
375: static struct roffmac roffs[TOKEN_NONE] = {
1.358 schwarze 376: { roff_noarg, NULL, NULL, 0 }, /* br */
1.305 schwarze 377: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.358 schwarze 378: { roff_noarg, NULL, NULL, 0 }, /* fi */
1.297 schwarze 379: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.298 schwarze 380: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.304 schwarze 381: { roff_onearg, NULL, NULL, 0 }, /* mc */
1.358 schwarze 382: { roff_noarg, NULL, NULL, 0 }, /* nf */
1.312 schwarze 383: { roff_onearg, NULL, NULL, 0 }, /* po */
1.309 schwarze 384: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.299 schwarze 385: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.300 schwarze 386: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.301 schwarze 387: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.296 schwarze 388: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.295 schwarze 389: { roff_unsupp, NULL, NULL, 0 }, /* ab */
390: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
391: { roff_line_ignore, NULL, NULL, 0 }, /* af */
392: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.311 schwarze 393: { roff_als, NULL, NULL, 0 }, /* als */
1.295 schwarze 394: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
395: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
396: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
397: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
398: { roff_ds, NULL, NULL, 0 }, /* as */
399: { roff_ds, NULL, NULL, 0 }, /* as1 */
400: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
401: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
402: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
403: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
404: { roff_unsupp, NULL, NULL, 0 }, /* blm */
405: { roff_unsupp, NULL, NULL, 0 }, /* box */
406: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
407: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
408: { roff_unsupp, NULL, NULL, 0 }, /* BP */
1.364 schwarze 409: { roff_break, NULL, NULL, 0 }, /* break */
1.295 schwarze 410: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
411: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.358 schwarze 412: { roff_noarg, NULL, NULL, 0 }, /* brp */
1.295 schwarze 413: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
414: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
415: { roff_cc, NULL, NULL, 0 }, /* cc */
416: { roff_insec, NULL, NULL, 0 }, /* cf */
417: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
418: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
1.341 schwarze 419: { roff_char, NULL, NULL, 0 }, /* char */
1.295 schwarze 420: { roff_unsupp, NULL, NULL, 0 }, /* chop */
421: { roff_line_ignore, NULL, NULL, 0 }, /* class */
422: { roff_insec, NULL, NULL, 0 }, /* close */
423: { roff_unsupp, NULL, NULL, 0 }, /* CL */
424: { roff_line_ignore, NULL, NULL, 0 }, /* color */
425: { roff_unsupp, NULL, NULL, 0 }, /* composite */
426: { roff_unsupp, NULL, NULL, 0 }, /* continue */
427: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
428: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
429: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
430: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
431: { roff_unsupp, NULL, NULL, 0 }, /* da */
432: { roff_unsupp, NULL, NULL, 0 }, /* dch */
433: { roff_Dd, NULL, NULL, 0 }, /* Dd */
434: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
435: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
436: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
437: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
438: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
439: { roff_unsupp, NULL, NULL, 0 }, /* device */
440: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
441: { roff_unsupp, NULL, NULL, 0 }, /* di */
442: { roff_unsupp, NULL, NULL, 0 }, /* do */
443: { roff_ds, NULL, NULL, 0 }, /* ds */
444: { roff_ds, NULL, NULL, 0 }, /* ds1 */
445: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
446: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.303 schwarze 447: { roff_ec, NULL, NULL, 0 }, /* ec */
1.295 schwarze 448: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
449: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
450: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
451: { roff_unsupp, NULL, NULL, 0 }, /* em */
452: { roff_EN, NULL, NULL, 0 }, /* EN */
1.303 schwarze 453: { roff_eo, NULL, NULL, 0 }, /* eo */
1.295 schwarze 454: { roff_unsupp, NULL, NULL, 0 }, /* EP */
455: { roff_EQ, NULL, NULL, 0 }, /* EQ */
456: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
457: { roff_unsupp, NULL, NULL, 0 }, /* ev */
458: { roff_unsupp, NULL, NULL, 0 }, /* evc */
459: { roff_unsupp, NULL, NULL, 0 }, /* ex */
460: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
461: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
462: { roff_unsupp, NULL, NULL, 0 }, /* fc */
463: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
464: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
465: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
466: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
467: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
468: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
469: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
470: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
471: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
472: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
473: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
474: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
475: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
476: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
477: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
478: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
479: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
480: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
481: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
482: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
483: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
484: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
485: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
486: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
487: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
488: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
489: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
490: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
491: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
492: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
493: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
494: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
495: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
496: { roff_unsupp, NULL, NULL, 0 }, /* index */
497: { roff_it, NULL, NULL, 0 }, /* it */
498: { roff_unsupp, NULL, NULL, 0 }, /* itc */
499: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
500: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
501: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
502: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
503: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
504: { roff_unsupp, NULL, NULL, 0 }, /* lc */
505: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
506: { roff_unsupp, NULL, NULL, 0 }, /* lds */
507: { roff_unsupp, NULL, NULL, 0 }, /* length */
508: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
509: { roff_insec, NULL, NULL, 0 }, /* lf */
510: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
511: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
512: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
513: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
514: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
515: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
516: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
517: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
518: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
519: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
520: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
521: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
522: { roff_insec, NULL, NULL, 0 }, /* mso */
523: { roff_line_ignore, NULL, NULL, 0 }, /* na */
524: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
525: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
526: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
527: { roff_unsupp, NULL, NULL, 0 }, /* nm */
528: { roff_unsupp, NULL, NULL, 0 }, /* nn */
1.330 schwarze 529: { roff_nop, NULL, NULL, 0 }, /* nop */
1.295 schwarze 530: { roff_nr, NULL, NULL, 0 }, /* nr */
531: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
532: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
533: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
534: { roff_insec, NULL, NULL, 0 }, /* nx */
535: { roff_insec, NULL, NULL, 0 }, /* open */
536: { roff_insec, NULL, NULL, 0 }, /* opena */
537: { roff_line_ignore, NULL, NULL, 0 }, /* os */
538: { roff_unsupp, NULL, NULL, 0 }, /* output */
539: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
540: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
541: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
542: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
543: { roff_insec, NULL, NULL, 0 }, /* pi */
544: { roff_unsupp, NULL, NULL, 0 }, /* PI */
545: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
546: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
547: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
548: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
549: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
550: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
551: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
552: { roff_insec, NULL, NULL, 0 }, /* pso */
553: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
554: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
555: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
556: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
557: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
1.339 schwarze 558: { roff_return, NULL, NULL, 0 }, /* return */
1.295 schwarze 559: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
560: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
561: { roff_rm, NULL, NULL, 0 }, /* rm */
1.306 schwarze 562: { roff_rn, NULL, NULL, 0 }, /* rn */
1.295 schwarze 563: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
564: { roff_rr, NULL, NULL, 0 }, /* rr */
565: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
566: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
567: { roff_unsupp, NULL, NULL, 0 }, /* schar */
568: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
569: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
1.339 schwarze 570: { roff_shift, NULL, NULL, 0 }, /* shift */
1.295 schwarze 571: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
572: { roff_so, NULL, NULL, 0 }, /* so */
573: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
574: { roff_line_ignore, NULL, NULL, 0 }, /* special */
575: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
576: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
577: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
578: { roff_unsupp, NULL, NULL, 0 }, /* substring */
579: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
580: { roff_insec, NULL, NULL, 0 }, /* sy */
581: { roff_T_, NULL, NULL, 0 }, /* T& */
582: { roff_unsupp, NULL, NULL, 0 }, /* tc */
583: { roff_TE, NULL, NULL, 0 }, /* TE */
1.315 schwarze 584: { roff_Dd, NULL, NULL, 0 }, /* TH */
1.295 schwarze 585: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
586: { roff_unsupp, NULL, NULL, 0 }, /* tl */
587: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
588: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
589: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
590: { roff_tr, NULL, NULL, 0 }, /* tr */
591: { roff_line_ignore, NULL, NULL, 0 }, /* track */
592: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
593: { roff_insec, NULL, NULL, 0 }, /* trf */
594: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
595: { roff_unsupp, NULL, NULL, 0 }, /* trin */
596: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
597: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
598: { roff_TS, NULL, NULL, 0 }, /* TS */
599: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
600: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
601: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
602: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
603: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
604: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
605: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
606: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
607: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
608: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
609: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
610: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
611: { roff_unsupp, NULL, NULL, 0 }, /* wh */
1.340 schwarze 612: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /*while*/
1.295 schwarze 613: { roff_insec, NULL, NULL, 0 }, /* write */
614: { roff_insec, NULL, NULL, 0 }, /* writec */
615: { roff_insec, NULL, NULL, 0 }, /* writem */
616: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
617: { roff_cblock, NULL, NULL, 0 }, /* . */
1.306 schwarze 618: { roff_renamed, NULL, NULL, 0 },
1.295 schwarze 619: { roff_userdef, NULL, NULL, 0 }
1.67 kristaps 620: };
621:
1.141 kristaps 622: /* Array of injected predefined strings. */
623: #define PREDEFS_MAX 38
624: static const struct predef predefs[PREDEFS_MAX] = {
625: #include "predefs.in"
626: };
627:
1.305 schwarze 628: static int roffce_lines; /* number of input lines to center */
629: static struct roff_node *roffce_node; /* active request */
1.178 schwarze 630: static int roffit_lines; /* number of lines to delay */
631: static char *roffit_macro; /* nil-terminated macro line */
632:
1.207 schwarze 633:
1.266 schwarze 634: /* --- request table ------------------------------------------------------ */
635:
1.295 schwarze 636: struct ohash *
637: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.85 kristaps 638: {
1.295 schwarze 639: struct ohash *htab;
640: struct roffreq *req;
641: enum roff_tok tok;
642: size_t sz;
643: unsigned int slot;
1.85 kristaps 644:
1.295 schwarze 645: htab = mandoc_malloc(sizeof(*htab));
646: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.85 kristaps 647:
1.295 schwarze 648: for (tok = mintok; tok < maxtok; tok++) {
1.296 schwarze 649: if (roff_name[tok] == NULL)
650: continue;
1.295 schwarze 651: sz = strlen(roff_name[tok]);
652: req = mandoc_malloc(sizeof(*req) + sz + 1);
653: req->tok = tok;
654: memcpy(req->name, roff_name[tok], sz + 1);
655: slot = ohash_qlookup(htab, req->name);
656: ohash_insert(htab, slot, req);
1.85 kristaps 657: }
1.295 schwarze 658: return htab;
1.85 kristaps 659: }
660:
1.295 schwarze 661: void
662: roffhash_free(struct ohash *htab)
1.67 kristaps 663: {
1.295 schwarze 664: struct roffreq *req;
665: unsigned int slot;
1.67 kristaps 666:
1.295 schwarze 667: if (htab == NULL)
668: return;
669: for (req = ohash_first(htab, &slot); req != NULL;
670: req = ohash_next(htab, &slot))
671: free(req);
672: ohash_delete(htab);
673: free(htab);
674: }
675:
676: enum roff_tok
677: roffhash_find(struct ohash *htab, const char *name, size_t sz)
678: {
679: struct roffreq *req;
680: const char *end;
681:
682: if (sz) {
683: end = name + sz;
684: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
685: } else
686: req = ohash_find(htab, ohash_qlookup(htab, name));
687: return req == NULL ? TOKEN_NONE : req->tok;
1.67 kristaps 688: }
689:
1.266 schwarze 690: /* --- stack of request blocks -------------------------------------------- */
691:
1.67 kristaps 692: /*
693: * Pop the current node off of the stack of roff instructions currently
1.364 schwarze 694: * pending. Return 1 if it is a loop or 0 otherwise.
1.67 kristaps 695: */
1.340 schwarze 696: static int
1.67 kristaps 697: roffnode_pop(struct roff *r)
698: {
699: struct roffnode *p;
1.340 schwarze 700: int inloop;
1.67 kristaps 701:
1.207 schwarze 702: p = r->last;
1.340 schwarze 703: inloop = p->tok == ROFF_while;
704: r->last = p->parent;
1.106 kristaps 705: free(p->name);
706: free(p->end);
1.67 kristaps 707: free(p);
1.340 schwarze 708: return inloop;
1.67 kristaps 709: }
710:
711: /*
712: * Push a roff node onto the instruction stack. This must later be
713: * removed with roffnode_pop().
714: */
1.98 schwarze 715: static void
1.294 schwarze 716: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.106 kristaps 717: int line, int col)
1.67 kristaps 718: {
719: struct roffnode *p;
720:
1.98 schwarze 721: p = mandoc_calloc(1, sizeof(struct roffnode));
1.67 kristaps 722: p->tok = tok;
1.106 kristaps 723: if (name)
724: p->name = mandoc_strdup(name);
1.67 kristaps 725: p->parent = r->last;
726: p->line = line;
727: p->col = col;
1.198 schwarze 728: p->rule = p->parent ? p->parent->rule : 0;
1.67 kristaps 729:
730: r->last = p;
731: }
732:
1.266 schwarze 733: /* --- roff parser state data management ---------------------------------- */
734:
1.67 kristaps 735: static void
736: roff_free1(struct roff *r)
737: {
1.167 kristaps 738: int i;
1.67 kristaps 739:
1.346 schwarze 740: tbl_free(r->first_tbl);
1.113 kristaps 741: r->first_tbl = r->last_tbl = r->tbl = NULL;
742:
1.347 schwarze 743: eqn_free(r->last_eqn);
1.319 schwarze 744: r->last_eqn = r->eqn = NULL;
1.125 kristaps 745:
1.339 schwarze 746: while (r->mstackpos >= 0)
747: roff_userret(r);
748:
1.67 kristaps 749: while (r->last)
750: roffnode_pop(r);
1.109 kristaps 751:
1.223 schwarze 752: free (r->rstack);
753: r->rstack = NULL;
754: r->rstacksz = 0;
755: r->rstackpos = -1;
756:
757: roff_freereg(r->regtab);
758: r->regtab = NULL;
759:
1.167 kristaps 760: roff_freestr(r->strtab);
1.306 schwarze 761: roff_freestr(r->rentab);
1.167 kristaps 762: roff_freestr(r->xmbtab);
1.306 schwarze 763: r->strtab = r->rentab = r->xmbtab = NULL;
1.167 kristaps 764:
765: if (r->xtab)
766: for (i = 0; i < 128; i++)
767: free(r->xtab[i].p);
768: free(r->xtab);
769: r->xtab = NULL;
1.67 kristaps 770: }
771:
772: void
773: roff_reset(struct roff *r)
774: {
775: roff_free1(r);
1.367 schwarze 776: r->options |= MPARSE_COMMENT;
1.227 schwarze 777: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.303 schwarze 778: r->control = '\0';
779: r->escape = '\\';
1.307 schwarze 780: roffce_lines = 0;
781: roffce_node = NULL;
782: roffit_lines = 0;
783: roffit_macro = NULL;
1.67 kristaps 784: }
785:
786: void
787: roff_free(struct roff *r)
788: {
1.366 schwarze 789: int i;
1.339 schwarze 790:
1.67 kristaps 791: roff_free1(r);
1.339 schwarze 792: for (i = 0; i < r->mstacksz; i++)
793: free(r->mstack[i].argv);
794: free(r->mstack);
1.295 schwarze 795: roffhash_free(r->reqtab);
1.67 kristaps 796: free(r);
797: }
798:
799: struct roff *
1.351 schwarze 800: roff_alloc(int options)
1.67 kristaps 801: {
802: struct roff *r;
803:
1.98 schwarze 804: r = mandoc_calloc(1, sizeof(struct roff));
1.328 schwarze 805: r->reqtab = roffhash_alloc(0, ROFF_RENAMED);
1.367 schwarze 806: r->options = options | MPARSE_COMMENT;
1.227 schwarze 807: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.339 schwarze 808: r->mstackpos = -1;
1.82 kristaps 809: r->rstackpos = -1;
1.303 schwarze 810: r->escape = '\\';
1.277 schwarze 811: return r;
1.265 schwarze 812: }
813:
1.266 schwarze 814: /* --- syntax tree state data management ---------------------------------- */
815:
1.265 schwarze 816: static void
817: roff_man_free1(struct roff_man *man)
818: {
1.356 schwarze 819: if (man->meta.first != NULL)
820: roff_node_delete(man, man->meta.first);
1.265 schwarze 821: free(man->meta.msec);
822: free(man->meta.vol);
823: free(man->meta.os);
824: free(man->meta.arch);
825: free(man->meta.title);
826: free(man->meta.name);
827: free(man->meta.date);
1.356 schwarze 828: free(man->meta.sodest);
1.265 schwarze 829: }
830:
1.357 schwarze 831: void
832: roff_state_reset(struct roff_man *man)
833: {
834: man->last = man->meta.first;
835: man->last_es = NULL;
836: man->flags = 0;
837: man->lastsec = man->lastnamed = SEC_NONE;
838: man->next = ROFF_NEXT_CHILD;
839: roff_setreg(man->roff, "nS", 0, '=');
840: }
841:
1.265 schwarze 842: static void
843: roff_man_alloc1(struct roff_man *man)
844: {
845: memset(&man->meta, 0, sizeof(man->meta));
1.356 schwarze 846: man->meta.first = mandoc_calloc(1, sizeof(*man->meta.first));
847: man->meta.first->type = ROFFT_ROOT;
848: man->meta.macroset = MACROSET_NONE;
1.357 schwarze 849: roff_state_reset(man);
1.265 schwarze 850: }
851:
852: void
853: roff_man_reset(struct roff_man *man)
854: {
855: roff_man_free1(man);
856: roff_man_alloc1(man);
857: }
858:
859: void
860: roff_man_free(struct roff_man *man)
861: {
862: roff_man_free1(man);
863: free(man);
864: }
865:
866: struct roff_man *
1.351 schwarze 867: roff_man_alloc(struct roff *roff, const char *os_s, int quick)
1.265 schwarze 868: {
869: struct roff_man *man;
870:
871: man = mandoc_calloc(1, sizeof(*man));
872: man->roff = roff;
1.316 schwarze 873: man->os_s = os_s;
1.265 schwarze 874: man->quick = quick;
875: roff_man_alloc1(man);
1.296 schwarze 876: roff->man = man;
1.277 schwarze 877: return man;
1.67 kristaps 878: }
879:
1.266 schwarze 880: /* --- syntax tree handling ----------------------------------------------- */
881:
882: struct roff_node *
883: roff_node_alloc(struct roff_man *man, int line, int pos,
884: enum roff_type type, int tok)
885: {
886: struct roff_node *n;
887:
888: n = mandoc_calloc(1, sizeof(*n));
889: n->line = line;
890: n->pos = pos;
891: n->tok = tok;
892: n->type = type;
893: n->sec = man->lastsec;
894:
895: if (man->flags & MDOC_SYNOPSIS)
1.285 schwarze 896: n->flags |= NODE_SYNPRETTY;
1.266 schwarze 897: else
1.285 schwarze 898: n->flags &= ~NODE_SYNPRETTY;
1.360 schwarze 899: if ((man->flags & (ROFF_NOFILL | ROFF_NONOFILL)) == ROFF_NOFILL)
1.359 schwarze 900: n->flags |= NODE_NOFILL;
901: else
902: n->flags &= ~NODE_NOFILL;
1.266 schwarze 903: if (man->flags & MDOC_NEWLINE)
1.285 schwarze 904: n->flags |= NODE_LINE;
1.266 schwarze 905: man->flags &= ~MDOC_NEWLINE;
906:
1.277 schwarze 907: return n;
1.266 schwarze 908: }
909:
910: void
911: roff_node_append(struct roff_man *man, struct roff_node *n)
912: {
913:
914: switch (man->next) {
915: case ROFF_NEXT_SIBLING:
1.281 schwarze 916: if (man->last->next != NULL) {
917: n->next = man->last->next;
918: man->last->next->prev = n;
919: } else
920: man->last->parent->last = n;
1.266 schwarze 921: man->last->next = n;
922: n->prev = man->last;
923: n->parent = man->last->parent;
924: break;
925: case ROFF_NEXT_CHILD:
1.287 schwarze 926: if (man->last->child != NULL) {
927: n->next = man->last->child;
928: man->last->child->prev = n;
929: } else
930: man->last->last = n;
1.266 schwarze 931: man->last->child = n;
932: n->parent = man->last;
933: break;
934: default:
935: abort();
936: }
1.282 schwarze 937: man->last = n;
1.266 schwarze 938:
939: switch (n->type) {
940: case ROFFT_HEAD:
941: n->parent->head = n;
942: break;
943: case ROFFT_BODY:
1.282 schwarze 944: if (n->end != ENDBODY_NOT)
945: return;
1.266 schwarze 946: n->parent->body = n;
947: break;
948: case ROFFT_TAIL:
949: n->parent->tail = n;
950: break;
951: default:
1.282 schwarze 952: return;
1.266 schwarze 953: }
1.282 schwarze 954:
955: /*
956: * Copy over the normalised-data pointer of our parent. Not
957: * everybody has one, but copying a null pointer is fine.
958: */
959:
960: n->norm = n->parent->norm;
961: assert(n->parent->type == ROFFT_BLOCK);
1.266 schwarze 962: }
963:
1.267 schwarze 964: void
965: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
966: {
967: struct roff_node *n;
968:
969: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
970: n->string = roff_strdup(man->roff, word);
971: roff_node_append(man, n);
1.286 schwarze 972: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 973: man->next = ROFF_NEXT_SIBLING;
974: }
975:
976: void
977: roff_word_append(struct roff_man *man, const char *word)
978: {
979: struct roff_node *n;
980: char *addstr, *newstr;
981:
982: n = man->last;
983: addstr = roff_strdup(man->roff, word);
984: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
985: free(addstr);
986: free(n->string);
987: n->string = newstr;
988: man->next = ROFF_NEXT_SIBLING;
1.268 schwarze 989: }
990:
991: void
992: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
993: {
994: struct roff_node *n;
995:
996: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
997: roff_node_append(man, n);
998: man->next = ROFF_NEXT_CHILD;
999: }
1000:
1001: struct roff_node *
1002: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
1003: {
1004: struct roff_node *n;
1005:
1006: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
1007: roff_node_append(man, n);
1008: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1009: return n;
1.267 schwarze 1010: }
1011:
1.266 schwarze 1012: struct roff_node *
1013: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
1014: {
1015: struct roff_node *n;
1016:
1017: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
1018: roff_node_append(man, n);
1019: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1020: return n;
1.266 schwarze 1021: }
1022:
1023: struct roff_node *
1024: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1025: {
1026: struct roff_node *n;
1027:
1028: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1029: roff_node_append(man, n);
1030: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1031: return n;
1.267 schwarze 1032: }
1033:
1.321 schwarze 1034: static void
1.346 schwarze 1035: roff_addtbl(struct roff_man *man, int line, struct tbl_node *tbl)
1.267 schwarze 1036: {
1037: struct roff_node *n;
1.346 schwarze 1038: struct tbl_span *span;
1.267 schwarze 1039:
1.356 schwarze 1040: if (man->meta.macroset == MACROSET_MAN)
1.302 schwarze 1041: man_breakscope(man, ROFF_TS);
1.321 schwarze 1042: while ((span = tbl_span(tbl)) != NULL) {
1.346 schwarze 1043: n = roff_node_alloc(man, line, 0, ROFFT_TBL, TOKEN_NONE);
1.321 schwarze 1044: n->span = span;
1045: roff_node_append(man, n);
1046: n->flags |= NODE_VALID | NODE_ENDED;
1047: man->next = ROFF_NEXT_SIBLING;
1048: }
1.266 schwarze 1049: }
1050:
1051: void
1052: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1053: {
1054:
1055: /* Adjust siblings. */
1056:
1057: if (n->prev)
1058: n->prev->next = n->next;
1059: if (n->next)
1060: n->next->prev = n->prev;
1061:
1062: /* Adjust parent. */
1063:
1064: if (n->parent != NULL) {
1065: if (n->parent->child == n)
1066: n->parent->child = n->next;
1067: if (n->parent->last == n)
1068: n->parent->last = n->prev;
1069: }
1070:
1071: /* Adjust parse point. */
1072:
1073: if (man == NULL)
1074: return;
1075: if (man->last == n) {
1076: if (n->prev == NULL) {
1077: man->last = n->parent;
1078: man->next = ROFF_NEXT_CHILD;
1079: } else {
1080: man->last = n->prev;
1081: man->next = ROFF_NEXT_SIBLING;
1082: }
1083: }
1.356 schwarze 1084: if (man->meta.first == n)
1085: man->meta.first = NULL;
1.344 schwarze 1086: }
1087:
1088: void
1089: roff_node_relink(struct roff_man *man, struct roff_node *n)
1090: {
1091: roff_node_unlink(man, n);
1092: n->prev = n->next = NULL;
1093: roff_node_append(man, n);
1.266 schwarze 1094: }
1095:
1096: void
1097: roff_node_free(struct roff_node *n)
1098: {
1099:
1100: if (n->args != NULL)
1101: mdoc_argv_free(n->args);
1102: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1103: free(n->norm);
1.347 schwarze 1104: eqn_box_free(n->eqn);
1.266 schwarze 1105: free(n->string);
1.374 ! schwarze 1106: free(n->tag);
1.266 schwarze 1107: free(n);
1108: }
1109:
1110: void
1111: roff_node_delete(struct roff_man *man, struct roff_node *n)
1112: {
1113:
1114: while (n->child != NULL)
1115: roff_node_delete(man, n->child);
1116: roff_node_unlink(man, n);
1117: roff_node_free(n);
1.370 schwarze 1118: }
1119:
1120: int
1121: roff_node_transparent(struct roff_node *n)
1122: {
1123: if (n == NULL)
1124: return 0;
1125: if (n->type == ROFFT_COMMENT || n->flags & NODE_NOPRT)
1126: return 1;
1.373 schwarze 1127: return roff_tok_transparent(n->tok);
1128: }
1129:
1130: int
1131: roff_tok_transparent(enum roff_tok tok)
1132: {
1133: switch (tok) {
1.370 schwarze 1134: case ROFF_ft:
1135: case ROFF_ll:
1136: case ROFF_mc:
1137: case ROFF_po:
1138: case ROFF_ta:
1139: case MDOC_Db:
1140: case MDOC_Es:
1141: case MDOC_Sm:
1142: case MDOC_Tg:
1143: case MAN_DT:
1144: case MAN_UC:
1145: case MAN_PD:
1146: case MAN_AT:
1147: return 1;
1148: default:
1149: return 0;
1150: }
1151: }
1152:
1153: struct roff_node *
1154: roff_node_child(struct roff_node *n)
1155: {
1156: for (n = n->child; roff_node_transparent(n); n = n->next)
1157: continue;
1158: return n;
1159: }
1160:
1161: struct roff_node *
1162: roff_node_prev(struct roff_node *n)
1163: {
1164: do {
1165: n = n->prev;
1166: } while (roff_node_transparent(n));
1167: return n;
1168: }
1169:
1170: struct roff_node *
1171: roff_node_next(struct roff_node *n)
1172: {
1173: do {
1174: n = n->next;
1175: } while (roff_node_transparent(n));
1176: return n;
1.269 schwarze 1177: }
1178:
1179: void
1180: deroff(char **dest, const struct roff_node *n)
1181: {
1182: char *cp;
1183: size_t sz;
1184:
1.371 schwarze 1185: if (n->string == NULL) {
1.269 schwarze 1186: for (n = n->child; n != NULL; n = n->next)
1187: deroff(dest, n);
1188: return;
1189: }
1190:
1.288 schwarze 1191: /* Skip leading whitespace. */
1.269 schwarze 1192:
1.288 schwarze 1193: for (cp = n->string; *cp != '\0'; cp++) {
1.289 schwarze 1194: if (cp[0] == '\\' && cp[1] != '\0' &&
1195: strchr(" %&0^|~", cp[1]) != NULL)
1.269 schwarze 1196: cp++;
1.288 schwarze 1197: else if ( ! isspace((unsigned char)*cp))
1.269 schwarze 1198: break;
1199: }
1200:
1.289 schwarze 1201: /* Skip trailing backslash. */
1202:
1203: sz = strlen(cp);
1.290 schwarze 1204: if (sz > 0 && cp[sz - 1] == '\\')
1.289 schwarze 1205: sz--;
1206:
1.269 schwarze 1207: /* Skip trailing whitespace. */
1208:
1.289 schwarze 1209: for (; sz; sz--)
1.269 schwarze 1210: if ( ! isspace((unsigned char)cp[sz-1]))
1211: break;
1212:
1213: /* Skip empty strings. */
1214:
1215: if (sz == 0)
1216: return;
1217:
1218: if (*dest == NULL) {
1219: *dest = mandoc_strndup(cp, sz);
1220: return;
1221: }
1222:
1223: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1224: free(*dest);
1225: *dest = cp;
1.266 schwarze 1226: }
1227:
1228: /* --- main functions of the roff parser ---------------------------------- */
1229:
1.94 kristaps 1230: /*
1.355 schwarze 1231: * In the current line, expand escape sequences that produce parsable
1232: * input text. Also check the syntax of the remaining escape sequences,
1233: * which typically produce output glyphs or change formatter state.
1.154 kristaps 1234: */
1.340 schwarze 1235: static int
1.355 schwarze 1236: roff_expand(struct roff *r, struct buf *buf, int ln, int pos, char newesc)
1.94 kristaps 1237: {
1.339 schwarze 1238: struct mctx *ctx; /* current macro call context */
1.208 schwarze 1239: char ubuf[24]; /* buffer to print the number */
1.328 schwarze 1240: struct roff_node *n; /* used for header comments */
1.205 schwarze 1241: const char *start; /* start of the string to process */
1.209 schwarze 1242: char *stesc; /* start of an escape sequence ('\\') */
1.352 schwarze 1243: const char *esct; /* type of esccape sequence */
1.328 schwarze 1244: char *ep; /* end of comment string */
1.108 schwarze 1245: const char *stnam; /* start of the name, after "[(*" */
1246: const char *cp; /* end of the name, e.g. before ']' */
1247: const char *res; /* the string to be substituted */
1.238 schwarze 1248: char *nbuf; /* new buffer to copy buf->buf to */
1.181 schwarze 1249: size_t maxl; /* expected length of the escape name */
1250: size_t naml; /* actual length of the escape name */
1.339 schwarze 1251: size_t asz; /* length of the replacement */
1252: size_t rsz; /* length of the rest of the string */
1.237 schwarze 1253: int inaml; /* length returned from mandoc_escape() */
1.181 schwarze 1254: int expand_count; /* to avoid infinite loops */
1.206 schwarze 1255: int npos; /* position in numeric expression */
1.218 schwarze 1256: int arg_complete; /* argument not interrupted by eol */
1.339 schwarze 1257: int quote_args; /* true for \\$@, false for \\$* */
1.303 schwarze 1258: int done; /* no more input available */
1.315 schwarze 1259: int deftype; /* type of definition to paste */
1.323 schwarze 1260: int rcsid; /* kind of RCS id seen */
1.352 schwarze 1261: enum mandocerr err; /* for escape sequence problems */
1.327 schwarze 1262: char sign; /* increment number register */
1.206 schwarze 1263: char term; /* character terminating the escape */
1.94 kristaps 1264:
1.303 schwarze 1265: /* Search forward for comments. */
1266:
1267: done = 0;
1268: start = buf->buf + pos;
1269: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1.355 schwarze 1270: if (stesc[0] != newesc || stesc[1] == '\0')
1.303 schwarze 1271: continue;
1272: stesc++;
1273: if (*stesc != '"' && *stesc != '#')
1274: continue;
1.313 schwarze 1275:
1276: /* Comment found, look for RCS id. */
1277:
1.323 schwarze 1278: rcsid = 0;
1.313 schwarze 1279: if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
1.323 schwarze 1280: rcsid = 1 << MANDOC_OS_OPENBSD;
1.313 schwarze 1281: cp += 8;
1282: } else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
1.323 schwarze 1283: rcsid = 1 << MANDOC_OS_NETBSD;
1.313 schwarze 1284: cp += 7;
1285: }
1286: if (cp != NULL &&
1287: isalnum((unsigned char)*cp) == 0 &&
1.314 schwarze 1288: strchr(cp, '$') != NULL) {
1.323 schwarze 1289: if (r->man->meta.rcsids & rcsid)
1.350 schwarze 1290: mandoc_msg(MANDOCERR_RCS_REP, ln,
1291: (int)(stesc - buf->buf) + 1,
1292: "%s", stesc + 1);
1.323 schwarze 1293: r->man->meta.rcsids |= rcsid;
1.314 schwarze 1294: }
1.313 schwarze 1295:
1296: /* Handle trailing whitespace. */
1297:
1.328 schwarze 1298: ep = strchr(stesc--, '\0') - 1;
1299: if (*ep == '\n') {
1.303 schwarze 1300: done = 1;
1.328 schwarze 1301: ep--;
1.303 schwarze 1302: }
1.328 schwarze 1303: if (*ep == ' ' || *ep == '\t')
1.350 schwarze 1304: mandoc_msg(MANDOCERR_SPACE_EOL,
1305: ln, (int)(ep - buf->buf), NULL);
1.328 schwarze 1306:
1307: /*
1308: * Save comments preceding the title macro
1309: * in the syntax tree.
1310: */
1311:
1.367 schwarze 1312: if (newesc != ASCII_ESC && r->options & MPARSE_COMMENT) {
1.328 schwarze 1313: while (*ep == ' ' || *ep == '\t')
1314: ep--;
1315: ep[1] = '\0';
1316: n = roff_node_alloc(r->man,
1317: ln, stesc + 1 - buf->buf,
1318: ROFFT_COMMENT, TOKEN_NONE);
1319: n->string = mandoc_strdup(stesc + 2);
1320: roff_node_append(r->man, n);
1321: n->flags |= NODE_VALID | NODE_ENDED;
1322: r->man->next = ROFF_NEXT_SIBLING;
1323: }
1324:
1.334 schwarze 1325: /* Line continuation with comment. */
1326:
1327: if (stesc[1] == '#') {
1328: *stesc = '\0';
1.340 schwarze 1329: return ROFF_IGN | ROFF_APPEND;
1.334 schwarze 1330: }
1331:
1332: /* Discard normal comments. */
1.328 schwarze 1333:
1.335 schwarze 1334: while (stesc > start && stesc[-1] == ' ' &&
1335: (stesc == start + 1 || stesc[-2] != '\\'))
1.303 schwarze 1336: stesc--;
1337: *stesc = '\0';
1338: break;
1339: }
1340: if (stesc == start)
1341: return ROFF_CONT;
1342: stesc--;
1343:
1344: /* Notice the end of the input. */
1345:
1346: if (*stesc == '\n') {
1347: *stesc-- = '\0';
1348: done = 1;
1349: }
1350:
1.170 schwarze 1351: expand_count = 0;
1.303 schwarze 1352: while (stesc >= start) {
1.355 schwarze 1353: if (*stesc != newesc) {
1.170 schwarze 1354:
1.355 schwarze 1355: /*
1356: * If we have a non-standard escape character,
1357: * escape literal backslashes because all
1358: * processing in subsequent functions uses
1359: * the standard escaping rules.
1360: */
1.205 schwarze 1361:
1.355 schwarze 1362: if (newesc != ASCII_ESC && *stesc == '\\') {
1.303 schwarze 1363: *stesc = '\0';
1364: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1365: buf->buf, stesc + 1) + 1;
1366: start = nbuf + pos;
1367: stesc = nbuf + (stesc - buf->buf);
1368: free(buf->buf);
1369: buf->buf = nbuf;
1370: }
1.355 schwarze 1371:
1372: /* Search backwards for the next escape. */
1373:
1.303 schwarze 1374: stesc--;
1.205 schwarze 1375: continue;
1.303 schwarze 1376: }
1.205 schwarze 1377:
1378: /* If it is escaped, skip it. */
1379:
1380: for (cp = stesc - 1; cp >= start; cp--)
1.303 schwarze 1381: if (*cp != r->escape)
1.205 schwarze 1382: break;
1383:
1.238 schwarze 1384: if ((stesc - cp) % 2 == 0) {
1.303 schwarze 1385: while (stesc > cp)
1386: *stesc-- = '\\';
1.205 schwarze 1387: continue;
1.303 schwarze 1388: } else if (stesc[1] != '\0') {
1389: *stesc = '\\';
1390: } else {
1391: *stesc-- = '\0';
1392: if (done)
1393: continue;
1394: else
1.340 schwarze 1395: return ROFF_IGN | ROFF_APPEND;
1.205 schwarze 1396: }
1.108 schwarze 1397:
1.206 schwarze 1398: /* Decide whether to expand or to check only. */
1.108 schwarze 1399:
1.206 schwarze 1400: term = '\0';
1.205 schwarze 1401: cp = stesc + 1;
1.352 schwarze 1402: if (*cp == 'E')
1403: cp++;
1404: esct = cp;
1405: switch (*esct) {
1.207 schwarze 1406: case '*':
1.339 schwarze 1407: case '$':
1.181 schwarze 1408: res = NULL;
1409: break;
1.207 schwarze 1410: case 'B':
1411: case 'w':
1.206 schwarze 1412: term = cp[1];
1413: /* FALLTHROUGH */
1.207 schwarze 1414: case 'n':
1.327 schwarze 1415: sign = cp[1];
1416: if (sign == '+' || sign == '-')
1417: cp++;
1.181 schwarze 1418: res = ubuf;
1419: break;
1420: default:
1.352 schwarze 1421: err = MANDOCERR_OK;
1422: switch(mandoc_escape(&cp, &stnam, &inaml)) {
1423: case ESCAPE_SPECIAL:
1424: if (mchars_spec2cp(stnam, inaml) >= 0)
1425: break;
1426: /* FALLTHROUGH */
1427: case ESCAPE_ERROR:
1428: err = MANDOCERR_ESC_BAD;
1429: break;
1430: case ESCAPE_UNDEF:
1431: err = MANDOCERR_ESC_UNDEF;
1432: break;
1433: case ESCAPE_UNSUPP:
1434: err = MANDOCERR_ESC_UNSUPP;
1435: break;
1436: default:
1437: break;
1438: }
1439: if (err != MANDOCERR_OK)
1440: mandoc_msg(err, ln, (int)(stesc - buf->buf),
1.219 schwarze 1441: "%.*s", (int)(cp - stesc), stesc);
1.303 schwarze 1442: stesc--;
1.205 schwarze 1443: continue;
1.152 kristaps 1444: }
1445:
1.205 schwarze 1446: if (EXPAND_LIMIT < ++expand_count) {
1.350 schwarze 1447: mandoc_msg(MANDOCERR_ROFFLOOP,
1.238 schwarze 1448: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1449: return ROFF_IGN;
1.205 schwarze 1450: }
1.108 schwarze 1451:
1452: /*
1453: * The third character decides the length
1.181 schwarze 1454: * of the name of the string or register.
1.108 schwarze 1455: * Save a pointer to the name.
1456: */
1457:
1.238 schwarze 1458: if (term == '\0') {
1.206 schwarze 1459: switch (*++cp) {
1.207 schwarze 1460: case '\0':
1.206 schwarze 1461: maxl = 0;
1462: break;
1.207 schwarze 1463: case '(':
1.206 schwarze 1464: cp++;
1465: maxl = 2;
1466: break;
1.207 schwarze 1467: case '[':
1.206 schwarze 1468: cp++;
1469: term = ']';
1470: maxl = 0;
1471: break;
1472: default:
1473: maxl = 1;
1474: break;
1475: }
1476: } else {
1477: cp += 2;
1.94 kristaps 1478: maxl = 0;
1479: }
1.108 schwarze 1480: stnam = cp;
1.94 kristaps 1481:
1.108 schwarze 1482: /* Advance to the end of the name. */
1.94 kristaps 1483:
1.253 schwarze 1484: naml = 0;
1.218 schwarze 1485: arg_complete = 1;
1.253 schwarze 1486: while (maxl == 0 || naml < maxl) {
1.238 schwarze 1487: if (*cp == '\0') {
1.350 schwarze 1488: mandoc_msg(MANDOCERR_ESC_BAD, ln,
1489: (int)(stesc - buf->buf), "%s", stesc);
1.218 schwarze 1490: arg_complete = 0;
1.206 schwarze 1491: break;
1.153 kristaps 1492: }
1.238 schwarze 1493: if (maxl == 0 && *cp == term) {
1.206 schwarze 1494: cp++;
1.253 schwarze 1495: break;
1496: }
1.352 schwarze 1497: if (*cp++ != '\\' || *esct != 'w') {
1.253 schwarze 1498: naml++;
1499: continue;
1500: }
1501: switch (mandoc_escape(&cp, NULL, NULL)) {
1502: case ESCAPE_SPECIAL:
1503: case ESCAPE_UNICODE:
1504: case ESCAPE_NUMBERED:
1.352 schwarze 1505: case ESCAPE_UNDEF:
1.253 schwarze 1506: case ESCAPE_OVERSTRIKE:
1507: naml++;
1508: break;
1509: default:
1.94 kristaps 1510: break;
1.206 schwarze 1511: }
1.94 kristaps 1512: }
1513:
1.108 schwarze 1514: /*
1515: * Retrieve the replacement string; if it is
1516: * undefined, resume searching for escapes.
1517: */
1518:
1.352 schwarze 1519: switch (*esct) {
1.207 schwarze 1520: case '*':
1.315 schwarze 1521: if (arg_complete) {
1522: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1523: res = roff_getstrn(r, stnam, naml, &deftype);
1.331 schwarze 1524:
1525: /*
1526: * If not overriden, let \*(.T
1527: * through to the formatters.
1528: */
1529:
1530: if (res == NULL && naml == 2 &&
1531: stnam[0] == '.' && stnam[1] == 'T') {
1532: roff_setstrn(&r->strtab,
1533: ".T", 2, NULL, 0, 0);
1534: stesc--;
1535: continue;
1536: }
1.315 schwarze 1537: }
1.206 schwarze 1538: break;
1.339 schwarze 1539: case '$':
1540: if (r->mstackpos < 0) {
1.350 schwarze 1541: mandoc_msg(MANDOCERR_ARG_UNDEF, ln,
1542: (int)(stesc - buf->buf), "%.3s", stesc);
1.339 schwarze 1543: break;
1544: }
1545: ctx = r->mstack + r->mstackpos;
1.352 schwarze 1546: npos = esct[1] - '1';
1.339 schwarze 1547: if (npos >= 0 && npos <= 8) {
1548: res = npos < ctx->argc ?
1549: ctx->argv[npos] : "";
1550: break;
1551: }
1.352 schwarze 1552: if (esct[1] == '*')
1.339 schwarze 1553: quote_args = 0;
1.352 schwarze 1554: else if (esct[1] == '@')
1.339 schwarze 1555: quote_args = 1;
1556: else {
1.350 schwarze 1557: mandoc_msg(MANDOCERR_ARG_NONUM, ln,
1558: (int)(stesc - buf->buf), "%.3s", stesc);
1.339 schwarze 1559: break;
1560: }
1561: asz = 0;
1562: for (npos = 0; npos < ctx->argc; npos++) {
1563: if (npos)
1564: asz++; /* blank */
1565: if (quote_args)
1566: asz += 2; /* quotes */
1567: asz += strlen(ctx->argv[npos]);
1568: }
1569: if (asz != 3) {
1570: rsz = buf->sz - (stesc - buf->buf) - 3;
1571: if (asz < 3)
1572: memmove(stesc + asz, stesc + 3, rsz);
1573: buf->sz += asz - 3;
1574: nbuf = mandoc_realloc(buf->buf, buf->sz);
1575: start = nbuf + pos;
1576: stesc = nbuf + (stesc - buf->buf);
1577: buf->buf = nbuf;
1578: if (asz > 3)
1579: memmove(stesc + asz, stesc + 3, rsz);
1580: }
1581: for (npos = 0; npos < ctx->argc; npos++) {
1582: if (npos)
1583: *stesc++ = ' ';
1584: if (quote_args)
1585: *stesc++ = '"';
1586: cp = ctx->argv[npos];
1587: while (*cp != '\0')
1588: *stesc++ = *cp++;
1589: if (quote_args)
1590: *stesc++ = '"';
1591: }
1592: continue;
1.207 schwarze 1593: case 'B':
1.206 schwarze 1594: npos = 0;
1.218 schwarze 1595: ubuf[0] = arg_complete &&
1.261 schwarze 1596: roff_evalnum(r, ln, stnam, &npos,
1597: NULL, ROFFNUM_SCALE) &&
1.218 schwarze 1598: stnam + npos + 1 == cp ? '1' : '0';
1.206 schwarze 1599: ubuf[1] = '\0';
1600: break;
1.207 schwarze 1601: case 'n':
1.218 schwarze 1602: if (arg_complete)
1603: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.327 schwarze 1604: roff_getregn(r, stnam, naml, sign));
1.218 schwarze 1605: else
1606: ubuf[0] = '\0';
1.206 schwarze 1607: break;
1.207 schwarze 1608: case 'w':
1.218 schwarze 1609: /* use even incomplete args */
1.208 schwarze 1610: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.206 schwarze 1611: 24 * (int)naml);
1612: break;
1613: }
1.94 kristaps 1614:
1.238 schwarze 1615: if (res == NULL) {
1.352 schwarze 1616: if (*esct == '*')
1.350 schwarze 1617: mandoc_msg(MANDOCERR_STR_UNDEF,
1618: ln, (int)(stesc - buf->buf),
1.339 schwarze 1619: "%.*s", (int)naml, stnam);
1.142 kristaps 1620: res = "";
1.246 schwarze 1621: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1.350 schwarze 1622: mandoc_msg(MANDOCERR_ROFFLOOP,
1.246 schwarze 1623: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1624: return ROFF_IGN;
1.94 kristaps 1625: }
1626:
1.108 schwarze 1627: /* Replace the escape sequence by the string. */
1628:
1.209 schwarze 1629: *stesc = '\0';
1.238 schwarze 1630: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1631: buf->buf, res, cp) + 1;
1.94 kristaps 1632:
1.205 schwarze 1633: /* Prepare for the next replacement. */
1.94 kristaps 1634:
1.205 schwarze 1635: start = nbuf + pos;
1.238 schwarze 1636: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1637: free(buf->buf);
1638: buf->buf = nbuf;
1.154 kristaps 1639: }
1.277 schwarze 1640: return ROFF_CONT;
1.154 kristaps 1641: }
1.353 schwarze 1642:
1643: /*
1644: * Parse a quoted or unquoted roff-style request or macro argument.
1645: * Return a pointer to the parsed argument, which is either the original
1646: * pointer or advanced by one byte in case the argument is quoted.
1647: * NUL-terminate the argument in place.
1648: * Collapse pairs of quotes inside quoted arguments.
1649: * Advance the argument pointer to the next argument,
1650: * or to the NUL byte terminating the argument line.
1651: */
1652: char *
1.355 schwarze 1653: roff_getarg(struct roff *r, char **cpp, int ln, int *pos)
1.353 schwarze 1654: {
1.355 schwarze 1655: struct buf buf;
1.366 schwarze 1656: char *cp, *start;
1.355 schwarze 1657: int newesc, pairs, quoted, white;
1.353 schwarze 1658:
1659: /* Quoting can only start with a new word. */
1660: start = *cpp;
1661: quoted = 0;
1662: if ('"' == *start) {
1663: quoted = 1;
1664: start++;
1665: }
1666:
1.355 schwarze 1667: newesc = pairs = white = 0;
1.353 schwarze 1668: for (cp = start; '\0' != *cp; cp++) {
1669:
1670: /*
1671: * Move the following text left
1672: * after quoted quotes and after "\\" and "\t".
1673: */
1674: if (pairs)
1675: cp[-pairs] = cp[0];
1676:
1677: if ('\\' == cp[0]) {
1678: /*
1679: * In copy mode, translate double to single
1680: * backslashes and backslash-t to literal tabs.
1681: */
1682: switch (cp[1]) {
1683: case 'a':
1684: case 't':
1.354 schwarze 1685: cp[-pairs] = '\t';
1.355 schwarze 1686: pairs++;
1687: cp++;
1688: break;
1.353 schwarze 1689: case '\\':
1.355 schwarze 1690: newesc = 1;
1691: cp[-pairs] = ASCII_ESC;
1.353 schwarze 1692: pairs++;
1693: cp++;
1694: break;
1695: case ' ':
1696: /* Skip escaped blanks. */
1697: if (0 == quoted)
1698: cp++;
1699: break;
1700: default:
1701: break;
1702: }
1703: } else if (0 == quoted) {
1704: if (' ' == cp[0]) {
1705: /* Unescaped blanks end unquoted args. */
1706: white = 1;
1707: break;
1708: }
1709: } else if ('"' == cp[0]) {
1710: if ('"' == cp[1]) {
1711: /* Quoted quotes collapse. */
1712: pairs++;
1713: cp++;
1714: } else {
1715: /* Unquoted quotes end quoted args. */
1716: quoted = 2;
1717: break;
1718: }
1719: }
1720: }
1721:
1722: /* Quoted argument without a closing quote. */
1723: if (1 == quoted)
1724: mandoc_msg(MANDOCERR_ARG_QUOTE, ln, *pos, NULL);
1725:
1726: /* NUL-terminate this argument and move to the next one. */
1727: if (pairs)
1728: cp[-pairs] = '\0';
1729: if ('\0' != *cp) {
1730: *cp++ = '\0';
1731: while (' ' == *cp)
1732: cp++;
1733: }
1734: *pos += (int)(cp - start) + (quoted ? 1 : 0);
1735: *cpp = cp;
1736:
1737: if ('\0' == *cp && (white || ' ' == cp[-1]))
1738: mandoc_msg(MANDOCERR_SPACE_EOL, ln, *pos, NULL);
1739:
1.355 schwarze 1740: start = mandoc_strdup(start);
1741: if (newesc == 0)
1742: return start;
1743:
1744: buf.buf = start;
1745: buf.sz = strlen(start) + 1;
1746: buf.next = NULL;
1747: if (roff_expand(r, &buf, ln, 0, ASCII_ESC) & ROFF_IGN) {
1748: free(buf.buf);
1749: buf.buf = mandoc_strdup("");
1750: }
1751: return buf.buf;
1.353 schwarze 1752: }
1753:
1.154 kristaps 1754:
1755: /*
1.275 schwarze 1756: * Process text streams.
1.154 kristaps 1757: */
1.340 schwarze 1758: static int
1.305 schwarze 1759: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.154 kristaps 1760: {
1761: size_t sz;
1762: const char *start;
1.178 schwarze 1763: char *p;
1764: int isz;
1.154 kristaps 1765: enum mandoc_esc esc;
1766:
1.275 schwarze 1767: /* Spring the input line trap. */
1768:
1769: if (roffit_lines == 1) {
1770: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1771: free(buf->buf);
1772: buf->buf = p;
1773: buf->sz = isz + 1;
1774: *offs = 0;
1775: free(roffit_macro);
1776: roffit_lines = 0;
1.277 schwarze 1777: return ROFF_REPARSE;
1.275 schwarze 1778: } else if (roffit_lines > 1)
1779: --roffit_lines;
1780:
1.305 schwarze 1781: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1782: if (roffce_lines < 1) {
1783: r->man->last = roffce_node;
1784: r->man->next = ROFF_NEXT_SIBLING;
1785: roffce_lines = 0;
1786: roffce_node = NULL;
1787: } else
1788: roffce_lines--;
1789: }
1790:
1.275 schwarze 1791: /* Convert all breakable hyphens into ASCII_HYPH. */
1792:
1.238 schwarze 1793: start = p = buf->buf + pos;
1.154 kristaps 1794:
1.238 schwarze 1795: while (*p != '\0') {
1.154 kristaps 1796: sz = strcspn(p, "-\\");
1797: p += sz;
1798:
1.238 schwarze 1799: if (*p == '\0')
1.159 kristaps 1800: break;
1801:
1.238 schwarze 1802: if (*p == '\\') {
1.154 kristaps 1803: /* Skip over escapes. */
1804: p++;
1.189 schwarze 1805: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.238 schwarze 1806: if (esc == ESCAPE_ERROR)
1.154 kristaps 1807: break;
1.264 schwarze 1808: while (*p == '-')
1809: p++;
1.155 kristaps 1810: continue;
1.159 kristaps 1811: } else if (p == start) {
1.158 kristaps 1812: p++;
1.155 kristaps 1813: continue;
1.158 kristaps 1814: }
1.155 kristaps 1815:
1.171 schwarze 1816: if (isalpha((unsigned char)p[-1]) &&
1817: isalpha((unsigned char)p[1]))
1.155 kristaps 1818: *p = ASCII_HYPH;
1819: p++;
1.94 kristaps 1820: }
1.277 schwarze 1821: return ROFF_CONT;
1.94 kristaps 1822: }
1823:
1.340 schwarze 1824: int
1.238 schwarze 1825: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.67 kristaps 1826: {
1.294 schwarze 1827: enum roff_tok t;
1.340 schwarze 1828: int e;
1.238 schwarze 1829: int pos; /* parse point */
1.243 schwarze 1830: int spos; /* saved parse point for messages */
1.238 schwarze 1831: int ppos; /* original offset in buf->buf */
1832: int ctl; /* macro line (boolean) */
1833:
1834: ppos = pos = *offs;
1.79 kristaps 1835:
1.230 schwarze 1836: /* Handle in-line equation delimiters. */
1837:
1.236 schwarze 1838: if (r->tbl == NULL &&
1839: r->last_eqn != NULL && r->last_eqn->delim &&
1.230 schwarze 1840: (r->eqn == NULL || r->eqn_inline)) {
1.238 schwarze 1841: e = roff_eqndelim(r, buf, pos);
1.230 schwarze 1842: if (e == ROFF_REPARSE)
1.277 schwarze 1843: return e;
1.230 schwarze 1844: assert(e == ROFF_CONT);
1845: }
1846:
1847: /* Expand some escape sequences. */
1.94 kristaps 1848:
1.355 schwarze 1849: e = roff_expand(r, buf, ln, pos, r->escape);
1.340 schwarze 1850: if ((e & ROFF_MASK) == ROFF_IGN)
1.277 schwarze 1851: return e;
1.238 schwarze 1852: assert(e == ROFF_CONT);
1.94 kristaps 1853:
1.238 schwarze 1854: ctl = roff_getcontrol(r, buf->buf, &pos);
1.130 kristaps 1855:
1.94 kristaps 1856: /*
1.79 kristaps 1857: * First, if a scope is open and we're not a macro, pass the
1.252 schwarze 1858: * text through the macro's filter.
1859: * Equations process all content themselves.
1860: * Tables process almost all content themselves, but we want
1861: * to warn about macros before passing it there.
1.79 kristaps 1862: */
1.74 kristaps 1863:
1.252 schwarze 1864: if (r->last != NULL && ! ctl) {
1.78 kristaps 1865: t = r->last->tok;
1.238 schwarze 1866: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.340 schwarze 1867: if ((e & ROFF_MASK) == ROFF_IGN)
1.277 schwarze 1868: return e;
1.340 schwarze 1869: e &= ~ROFF_MASK;
1870: } else
1871: e = ROFF_IGN;
1.319 schwarze 1872: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1873: eqn_read(r->eqn, buf->buf + ppos);
1.340 schwarze 1874: return e;
1.319 schwarze 1875: }
1.321 schwarze 1876: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1877: tbl_read(r->tbl, ln, buf->buf, ppos);
1.346 schwarze 1878: roff_addtbl(r->man, ln, r->tbl);
1.340 schwarze 1879: return e;
1.321 schwarze 1880: }
1.367 schwarze 1881: if ( ! ctl) {
1882: r->options &= ~MPARSE_COMMENT;
1.340 schwarze 1883: return roff_parsetext(r, buf, pos, offs) | e;
1.367 schwarze 1884: }
1.228 schwarze 1885:
1886: /* Skip empty request lines. */
1887:
1.238 schwarze 1888: if (buf->buf[pos] == '"') {
1.350 schwarze 1889: mandoc_msg(MANDOCERR_COMMENT_BAD, ln, pos, NULL);
1.277 schwarze 1890: return ROFF_IGN;
1.238 schwarze 1891: } else if (buf->buf[pos] == '\0')
1.277 schwarze 1892: return ROFF_IGN;
1.67 kristaps 1893:
1.79 kristaps 1894: /*
1895: * If a scope is open, go to the child handler for that macro,
1896: * as it may want to preprocess before doing anything with it.
1.125 kristaps 1897: * Don't do so if an equation is open.
1.79 kristaps 1898: */
1.78 kristaps 1899:
1.79 kristaps 1900: if (r->last) {
1901: t = r->last->tok;
1.277 schwarze 1902: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1903: }
1.78 kristaps 1904:
1.243 schwarze 1905: /* No scope is open. This is a new request or macro. */
1906:
1.367 schwarze 1907: r->options &= ~MPARSE_COMMENT;
1.243 schwarze 1908: spos = pos;
1909: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1910:
1911: /* Tables ignore most macros. */
1912:
1.308 schwarze 1913: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.309 schwarze 1914: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.350 schwarze 1915: mandoc_msg(MANDOCERR_TBLMACRO,
1916: ln, pos, "%s", buf->buf + spos);
1.308 schwarze 1917: if (t != TOKEN_NONE)
1.277 schwarze 1918: return ROFF_IGN;
1.257 schwarze 1919: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1920: pos++;
1.291 schwarze 1921: while (buf->buf[pos] == ' ')
1.257 schwarze 1922: pos++;
1.321 schwarze 1923: tbl_read(r->tbl, ln, buf->buf, pos);
1.346 schwarze 1924: roff_addtbl(r->man, ln, r->tbl);
1.321 schwarze 1925: return ROFF_IGN;
1.243 schwarze 1926: }
1927:
1.305 schwarze 1928: /* For now, let high level macros abort .ce mode. */
1929:
1930: if (ctl && roffce_node != NULL &&
1.324 schwarze 1931: (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
1932: t == ROFF_TH || t == ROFF_TS)) {
1.305 schwarze 1933: r->man->last = roffce_node;
1934: r->man->next = ROFF_NEXT_SIBLING;
1935: roffce_lines = 0;
1936: roffce_node = NULL;
1937: }
1938:
1.79 kristaps 1939: /*
1.243 schwarze 1940: * This is neither a roff request nor a user-defined macro.
1941: * Let the standard macro set parsers handle it.
1.79 kristaps 1942: */
1.67 kristaps 1943:
1.294 schwarze 1944: if (t == TOKEN_NONE)
1.277 schwarze 1945: return ROFF_CONT;
1.243 schwarze 1946:
1947: /* Execute a roff request or a user defined macro. */
1.67 kristaps 1948:
1.296 schwarze 1949: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.74 kristaps 1950: }
1951:
1.339 schwarze 1952: /*
1953: * Internal interface function to tell the roff parser that execution
1954: * of the current macro ended. This is required because macro
1955: * definitions usually do not end with a .return request.
1956: */
1957: void
1958: roff_userret(struct roff *r)
1959: {
1960: struct mctx *ctx;
1961: int i;
1962:
1963: assert(r->mstackpos >= 0);
1964: ctx = r->mstack + r->mstackpos;
1965: for (i = 0; i < ctx->argc; i++)
1966: free(ctx->argv[i]);
1967: ctx->argc = 0;
1968: r->mstackpos--;
1969: }
1970:
1.117 kristaps 1971: void
1.74 kristaps 1972: roff_endparse(struct roff *r)
1973: {
1.321 schwarze 1974: if (r->last != NULL)
1.350 schwarze 1975: mandoc_msg(MANDOCERR_BLK_NOEND, r->last->line,
1976: r->last->col, "%s", roff_name[r->last->tok]);
1.117 kristaps 1977:
1.321 schwarze 1978: if (r->eqn != NULL) {
1.350 schwarze 1979: mandoc_msg(MANDOCERR_BLK_NOEND,
1.319 schwarze 1980: r->eqn->node->line, r->eqn->node->pos, "EQ");
1981: eqn_parse(r->eqn);
1982: r->eqn = NULL;
1.125 kristaps 1983: }
1984:
1.321 schwarze 1985: if (r->tbl != NULL) {
1.346 schwarze 1986: tbl_end(r->tbl, 1);
1.321 schwarze 1987: r->tbl = NULL;
1.117 kristaps 1988: }
1.67 kristaps 1989: }
1990:
1991: /*
1992: * Parse a roff node's type from the input buffer. This must be in the
1993: * form of ".foo xxx" in the usual way.
1994: */
1.294 schwarze 1995: static enum roff_tok
1.214 schwarze 1996: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.67 kristaps 1997: {
1.214 schwarze 1998: char *cp;
1.106 kristaps 1999: const char *mac;
2000: size_t maclen;
1.315 schwarze 2001: int deftype;
1.294 schwarze 2002: enum roff_tok t;
1.67 kristaps 2003:
1.214 schwarze 2004: cp = buf + *pos;
2005:
2006: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.294 schwarze 2007: return TOKEN_NONE;
1.67 kristaps 2008:
1.214 schwarze 2009: mac = cp;
2010: maclen = roff_getname(r, &cp, ln, ppos);
1.67 kristaps 2011:
1.315 schwarze 2012: deftype = ROFFDEF_USER | ROFFDEF_REN;
2013: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
2014: switch (deftype) {
2015: case ROFFDEF_USER:
2016: t = ROFF_USERDEF;
2017: break;
2018: case ROFFDEF_REN:
2019: t = ROFF_RENAMED;
2020: break;
2021: default:
2022: t = roffhash_find(r->reqtab, mac, maclen);
2023: break;
2024: }
1.294 schwarze 2025: if (t != TOKEN_NONE)
1.214 schwarze 2026: *pos = cp - buf;
1.325 schwarze 2027: else if (deftype == ROFFDEF_UNDEF) {
2028: /* Using an undefined macro defines it to be empty. */
2029: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
2030: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
2031: }
1.277 schwarze 2032: return t;
1.67 kristaps 2033: }
2034:
1.266 schwarze 2035: /* --- handling of request blocks ----------------------------------------- */
2036:
1.340 schwarze 2037: static int
1.76 kristaps 2038: roff_cblock(ROFF_ARGS)
1.67 kristaps 2039: {
2040:
1.79 kristaps 2041: /*
2042: * A block-close `..' should only be invoked as a child of an
2043: * ignore macro, otherwise raise a warning and just ignore it.
2044: */
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:
1.220 schwarze 2053: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.207 schwarze 2054: case ROFF_ami:
2055: case ROFF_de:
1.108 schwarze 2056: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.207 schwarze 2057: case ROFF_dei:
2058: case ROFF_ig:
1.81 kristaps 2059: break;
2060: default:
1.350 schwarze 2061: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.277 schwarze 2062: return ROFF_IGN;
1.76 kristaps 2063: }
1.67 kristaps 2064:
1.238 schwarze 2065: if (buf->buf[pos] != '\0')
1.350 schwarze 2066: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.238 schwarze 2067: ".. %s", buf->buf + pos);
1.71 kristaps 2068:
2069: roffnode_pop(r);
1.76 kristaps 2070: roffnode_cleanscope(r);
1.277 schwarze 2071: return ROFF_IGN;
1.71 kristaps 2072:
1.67 kristaps 2073: }
2074:
1.364 schwarze 2075: /*
2076: * Pop all nodes ending at the end of the current input line.
2077: * Return the number of loops ended.
2078: */
1.340 schwarze 2079: static int
1.76 kristaps 2080: roffnode_cleanscope(struct roff *r)
1.67 kristaps 2081: {
1.340 schwarze 2082: int inloop;
1.67 kristaps 2083:
1.340 schwarze 2084: inloop = 0;
2085: while (r->last != NULL) {
1.173 schwarze 2086: if (--r->last->endspan != 0)
1.76 kristaps 2087: break;
1.340 schwarze 2088: inloop += roffnode_pop(r);
1.76 kristaps 2089: }
1.340 schwarze 2090: return inloop;
1.67 kristaps 2091: }
2092:
1.364 schwarze 2093: /*
2094: * Handle the closing \} of a conditional block.
2095: * Apart from generating warnings, this only pops nodes.
2096: * Return the number of loops ended.
2097: */
1.340 schwarze 2098: static int
1.195 schwarze 2099: roff_ccond(struct roff *r, int ln, int ppos)
1.74 kristaps 2100: {
1.76 kristaps 2101: if (NULL == r->last) {
1.350 schwarze 2102: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 2103: return 0;
1.76 kristaps 2104: }
2105:
1.82 kristaps 2106: switch (r->last->tok) {
1.207 schwarze 2107: case ROFF_el:
2108: case ROFF_ie:
2109: case ROFF_if:
1.340 schwarze 2110: case ROFF_while:
1.82 kristaps 2111: break;
2112: default:
1.350 schwarze 2113: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 2114: return 0;
1.75 kristaps 2115: }
2116:
1.76 kristaps 2117: if (r->last->endspan > -1) {
1.350 schwarze 2118: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 2119: return 0;
1.76 kristaps 2120: }
2121:
1.340 schwarze 2122: return roffnode_pop(r) + roffnode_cleanscope(r);
1.76 kristaps 2123: }
2124:
1.340 schwarze 2125: static int
1.80 kristaps 2126: roff_block(ROFF_ARGS)
1.76 kristaps 2127: {
1.315 schwarze 2128: const char *name, *value;
2129: char *call, *cp, *iname, *rname;
2130: size_t csz, namesz, rsz;
2131: int deftype;
1.106 kristaps 2132:
1.220 schwarze 2133: /* Ignore groff compatibility mode for now. */
1.76 kristaps 2134:
1.238 schwarze 2135: if (tok == ROFF_de1)
1.220 schwarze 2136: tok = ROFF_de;
1.251 schwarze 2137: else if (tok == ROFF_dei1)
2138: tok = ROFF_dei;
1.238 schwarze 2139: else if (tok == ROFF_am1)
1.220 schwarze 2140: tok = ROFF_am;
1.251 schwarze 2141: else if (tok == ROFF_ami1)
2142: tok = ROFF_ami;
1.220 schwarze 2143:
2144: /* Parse the macro name argument. */
2145:
1.238 schwarze 2146: cp = buf->buf + pos;
2147: if (tok == ROFF_ig) {
1.220 schwarze 2148: iname = NULL;
2149: namesz = 0;
2150: } else {
2151: iname = cp;
2152: namesz = roff_getname(r, &cp, ln, ppos);
2153: iname[namesz] = '\0';
2154: }
1.107 kristaps 2155:
1.220 schwarze 2156: /* Resolve the macro name argument if it is indirect. */
1.107 kristaps 2157:
1.238 schwarze 2158: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 2159: deftype = ROFFDEF_USER;
2160: name = roff_getstrn(r, iname, namesz, &deftype);
2161: if (name == NULL) {
1.350 schwarze 2162: mandoc_msg(MANDOCERR_STR_UNDEF,
2163: ln, (int)(iname - buf->buf),
1.220 schwarze 2164: "%.*s", (int)namesz, iname);
2165: namesz = 0;
2166: } else
2167: namesz = strlen(name);
2168: } else
2169: name = iname;
1.107 kristaps 2170:
1.238 schwarze 2171: if (namesz == 0 && tok != ROFF_ig) {
1.350 schwarze 2172: mandoc_msg(MANDOCERR_REQ_EMPTY,
2173: ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2174: return ROFF_IGN;
1.220 schwarze 2175: }
1.80 kristaps 2176:
1.106 kristaps 2177: roffnode_push(r, tok, name, ln, ppos);
2178:
2179: /*
2180: * At the beginning of a `de' macro, clear the existing string
2181: * with the same name, if there is one. New content will be
1.193 schwarze 2182: * appended from roff_block_text() in multiline mode.
1.106 kristaps 2183: */
1.107 kristaps 2184:
1.311 schwarze 2185: if (tok == ROFF_de || tok == ROFF_dei) {
1.213 schwarze 2186: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.311 schwarze 2187: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.315 schwarze 2188: } else if (tok == ROFF_am || tok == ROFF_ami) {
2189: deftype = ROFFDEF_ANY;
2190: value = roff_getstrn(r, iname, namesz, &deftype);
2191: switch (deftype) { /* Before appending, ... */
2192: case ROFFDEF_PRE: /* copy predefined to user-defined. */
2193: roff_setstrn(&r->strtab, name, namesz,
2194: value, strlen(value), 0);
2195: break;
2196: case ROFFDEF_REN: /* call original standard macro. */
2197: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2198: (int)strlen(value), value);
2199: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2200: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
2201: free(call);
2202: break;
2203: case ROFFDEF_STD: /* rename and call standard macro. */
2204: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
2205: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
2206: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2207: (int)rsz, rname);
2208: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2209: free(call);
2210: free(rname);
2211: break;
2212: default:
2213: break;
2214: }
1.311 schwarze 2215: }
1.76 kristaps 2216:
1.238 schwarze 2217: if (*cp == '\0')
1.277 schwarze 2218: return ROFF_IGN;
1.78 kristaps 2219:
1.220 schwarze 2220: /* Get the custom end marker. */
1.107 kristaps 2221:
1.220 schwarze 2222: iname = cp;
1.213 schwarze 2223: namesz = roff_getname(r, &cp, ln, ppos);
1.220 schwarze 2224:
2225: /* Resolve the end marker if it is indirect. */
2226:
1.238 schwarze 2227: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 2228: deftype = ROFFDEF_USER;
2229: name = roff_getstrn(r, iname, namesz, &deftype);
2230: if (name == NULL) {
1.350 schwarze 2231: mandoc_msg(MANDOCERR_STR_UNDEF,
2232: ln, (int)(iname - buf->buf),
1.220 schwarze 2233: "%.*s", (int)namesz, iname);
2234: namesz = 0;
2235: } else
2236: namesz = strlen(name);
2237: } else
2238: name = iname;
2239:
1.213 schwarze 2240: if (namesz)
2241: r->last->end = mandoc_strndup(name, namesz);
1.78 kristaps 2242:
1.238 schwarze 2243: if (*cp != '\0')
1.350 schwarze 2244: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.295 schwarze 2245: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.74 kristaps 2246:
1.277 schwarze 2247: return ROFF_IGN;
1.78 kristaps 2248: }
2249:
1.340 schwarze 2250: static int
1.80 kristaps 2251: roff_block_sub(ROFF_ARGS)
1.79 kristaps 2252: {
1.294 schwarze 2253: enum roff_tok t;
1.79 kristaps 2254: int i, j;
2255:
2256: /*
2257: * First check whether a custom macro exists at this level. If
2258: * it does, then check against it. This is some of groff's
2259: * stranger behaviours. If we encountered a custom end-scope
2260: * tag and that tag also happens to be a "real" macro, then we
2261: * need to try interpreting it again as a real macro. If it's
2262: * not, then return ignore. Else continue.
2263: */
2264:
2265: if (r->last->end) {
1.130 kristaps 2266: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.238 schwarze 2267: if (buf->buf[i] != r->last->end[j])
1.79 kristaps 2268: break;
2269:
1.238 schwarze 2270: if (r->last->end[j] == '\0' &&
2271: (buf->buf[i] == '\0' ||
2272: buf->buf[i] == ' ' ||
2273: buf->buf[i] == '\t')) {
1.79 kristaps 2274: roffnode_pop(r);
2275: roffnode_cleanscope(r);
2276:
1.238 schwarze 2277: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.130 kristaps 2278: i++;
2279:
2280: pos = i;
1.238 schwarze 2281: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.294 schwarze 2282: TOKEN_NONE)
1.277 schwarze 2283: return ROFF_RERUN;
2284: return ROFF_IGN;
1.79 kristaps 2285: }
2286: }
2287:
2288: /*
2289: * If we have no custom end-query or lookup failed, then try
2290: * pulling it out of the hashtable.
2291: */
2292:
1.238 schwarze 2293: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.79 kristaps 2294:
1.238 schwarze 2295: if (t != ROFF_cblock) {
2296: if (tok != ROFF_ig)
2297: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.277 schwarze 2298: return ROFF_IGN;
1.106 kristaps 2299: }
1.79 kristaps 2300:
1.277 schwarze 2301: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 2302: }
2303:
1.340 schwarze 2304: static int
1.80 kristaps 2305: roff_block_text(ROFF_ARGS)
1.78 kristaps 2306: {
2307:
1.238 schwarze 2308: if (tok != ROFF_ig)
2309: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.106 kristaps 2310:
1.277 schwarze 2311: return ROFF_IGN;
1.78 kristaps 2312: }
2313:
1.340 schwarze 2314: static int
1.82 kristaps 2315: roff_cond_sub(ROFF_ARGS)
2316: {
1.364 schwarze 2317: struct roffnode *bl;
1.340 schwarze 2318: char *ep;
2319: int endloop, irc, rr;
1.294 schwarze 2320: enum roff_tok t;
1.82 kristaps 2321:
1.340 schwarze 2322: irc = ROFF_IGN;
1.82 kristaps 2323: rr = r->last->rule;
1.340 schwarze 2324: endloop = tok != ROFF_while ? ROFF_IGN :
2325: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2326: if (roffnode_cleanscope(r))
2327: irc |= endloop;
1.144 kristaps 2328:
1.196 schwarze 2329: /*
2330: * If `\}' occurs on a macro line without a preceding macro,
2331: * drop the line completely.
2332: */
2333:
1.238 schwarze 2334: ep = buf->buf + pos;
2335: if (ep[0] == '\\' && ep[1] == '}')
1.198 schwarze 2336: rr = 0;
1.196 schwarze 2337:
1.343 schwarze 2338: /*
2339: * The closing delimiter `\}' rewinds the conditional scope
2340: * but is otherwise ignored when interpreting the line.
2341: */
1.144 kristaps 2342:
1.238 schwarze 2343: while ((ep = strchr(ep, '\\')) != NULL) {
1.318 schwarze 2344: switch (ep[1]) {
2345: case '}':
2346: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1.340 schwarze 2347: if (roff_ccond(r, ln, ep - buf->buf))
2348: irc |= endloop;
1.318 schwarze 2349: break;
2350: case '\0':
2351: ++ep;
2352: break;
2353: default:
2354: ep += 2;
2355: break;
1.197 schwarze 2356: }
1.177 schwarze 2357: }
1.318 schwarze 2358:
1.368 schwarze 2359: t = roff_parse(r, buf->buf, &pos, ln, ppos);
2360:
2361: /* For now, let high level macros abort .ce mode. */
2362:
2363: if (roffce_node != NULL &&
2364: (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
2365: t == ROFF_TH || t == ROFF_TS)) {
2366: r->man->last = roffce_node;
2367: r->man->next = ROFF_NEXT_SIBLING;
2368: roffce_lines = 0;
2369: roffce_node = NULL;
2370: }
2371:
1.318 schwarze 2372: /*
2373: * Fully handle known macros when they are structurally
2374: * required or when the conditional evaluated to true.
2375: */
2376:
1.364 schwarze 2377: if (t == ROFF_break) {
2378: if (irc & ROFF_LOOPMASK)
2379: irc = ROFF_IGN | ROFF_LOOPEXIT;
2380: else if (rr) {
2381: for (bl = r->last; bl != NULL; bl = bl->parent) {
2382: bl->rule = 0;
2383: if (bl->tok == ROFF_while)
2384: break;
2385: }
2386: }
2387: } else if (t != TOKEN_NONE &&
2388: (rr || roffs[t].flags & ROFFMAC_STRUCT))
2389: irc |= (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
2390: else
2391: irc |= rr ? ROFF_CONT : ROFF_IGN;
1.340 schwarze 2392: return irc;
1.82 kristaps 2393: }
2394:
1.340 schwarze 2395: static int
1.82 kristaps 2396: roff_cond_text(ROFF_ARGS)
1.78 kristaps 2397: {
1.140 kristaps 2398: char *ep;
1.340 schwarze 2399: int endloop, irc, rr;
1.82 kristaps 2400:
1.340 schwarze 2401: irc = ROFF_IGN;
1.82 kristaps 2402: rr = r->last->rule;
1.340 schwarze 2403: endloop = tok != ROFF_while ? ROFF_IGN :
2404: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2405: if (roffnode_cleanscope(r))
2406: irc |= endloop;
1.82 kristaps 2407:
1.343 schwarze 2408: /*
2409: * If `\}' occurs on a text line with neither preceding
2410: * nor following characters, drop the line completely.
2411: */
2412:
1.238 schwarze 2413: ep = buf->buf + pos;
1.343 schwarze 2414: if (strcmp(ep, "\\}") == 0)
2415: rr = 0;
2416:
2417: /*
2418: * The closing delimiter `\}' rewinds the conditional scope
2419: * but is otherwise ignored when interpreting the line.
2420: */
2421:
1.238 schwarze 2422: while ((ep = strchr(ep, '\\')) != NULL) {
1.343 schwarze 2423: switch (ep[1]) {
2424: case '}':
2425: memmove(ep, ep + 2, strlen(ep + 2) + 1);
2426: if (roff_ccond(r, ln, ep - buf->buf))
1.340 schwarze 2427: irc |= endloop;
1.343 schwarze 2428: break;
2429: case '\0':
2430: ++ep;
2431: break;
2432: default:
2433: ep += 2;
2434: break;
1.197 schwarze 2435: }
1.78 kristaps 2436: }
1.340 schwarze 2437: if (rr)
2438: irc |= ROFF_CONT;
2439: return irc;
1.74 kristaps 2440: }
2441:
1.266 schwarze 2442: /* --- handling of numeric and conditional expressions -------------------- */
2443:
1.204 schwarze 2444: /*
2445: * Parse a single signed integer number. Stop at the first non-digit.
2446: * If there is at least one digit, return success and advance the
2447: * parse point, else return failure and let the parse point unchanged.
2448: * Ignore overflows, treat them just like the C language.
2449: */
1.184 schwarze 2450: static int
1.261 schwarze 2451: roff_getnum(const char *v, int *pos, int *res, int flags)
1.184 schwarze 2452: {
1.261 schwarze 2453: int myres, scaled, n, p;
1.206 schwarze 2454:
2455: if (NULL == res)
2456: res = &myres;
1.184 schwarze 2457:
2458: p = *pos;
2459: n = v[p] == '-';
1.261 schwarze 2460: if (n || v[p] == '+')
1.184 schwarze 2461: p++;
2462:
1.261 schwarze 2463: if (flags & ROFFNUM_WHITE)
2464: while (isspace((unsigned char)v[p]))
2465: p++;
2466:
1.184 schwarze 2467: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.204 schwarze 2468: *res = 10 * *res + v[p] - '0';
1.184 schwarze 2469: if (p == *pos + n)
2470: return 0;
2471:
2472: if (n)
2473: *res = -*res;
2474:
1.254 schwarze 2475: /* Each number may be followed by one optional scaling unit. */
2476:
2477: switch (v[p]) {
2478: case 'f':
1.261 schwarze 2479: scaled = *res * 65536;
1.254 schwarze 2480: break;
2481: case 'i':
1.261 schwarze 2482: scaled = *res * 240;
1.254 schwarze 2483: break;
2484: case 'c':
1.261 schwarze 2485: scaled = *res * 240 / 2.54;
1.254 schwarze 2486: break;
2487: case 'v':
2488: case 'P':
1.261 schwarze 2489: scaled = *res * 40;
1.254 schwarze 2490: break;
2491: case 'm':
2492: case 'n':
1.261 schwarze 2493: scaled = *res * 24;
1.254 schwarze 2494: break;
2495: case 'p':
1.261 schwarze 2496: scaled = *res * 10 / 3;
1.254 schwarze 2497: break;
2498: case 'u':
1.261 schwarze 2499: scaled = *res;
1.254 schwarze 2500: break;
2501: case 'M':
1.261 schwarze 2502: scaled = *res * 6 / 25;
1.254 schwarze 2503: break;
2504: default:
1.261 schwarze 2505: scaled = *res;
1.254 schwarze 2506: p--;
2507: break;
2508: }
1.261 schwarze 2509: if (flags & ROFFNUM_SCALE)
2510: *res = scaled;
1.254 schwarze 2511:
2512: *pos = p + 1;
1.277 schwarze 2513: return 1;
1.184 schwarze 2514: }
2515:
1.198 schwarze 2516: /*
2517: * Evaluate a string comparison condition.
2518: * The first character is the delimiter.
2519: * Succeed if the string up to its second occurrence
2520: * matches the string up to its third occurence.
2521: * Advance the cursor after the third occurrence
2522: * or lacking that, to the end of the line.
2523: */
2524: static int
2525: roff_evalstrcond(const char *v, int *pos)
2526: {
2527: const char *s1, *s2, *s3;
2528: int match;
2529:
2530: match = 0;
2531: s1 = v + *pos; /* initial delimiter */
2532: s2 = s1 + 1; /* for scanning the first string */
2533: s3 = strchr(s2, *s1); /* for scanning the second string */
2534:
2535: if (NULL == s3) /* found no middle delimiter */
2536: goto out;
2537:
2538: while ('\0' != *++s3) {
2539: if (*s2 != *s3) { /* mismatch */
2540: s3 = strchr(s3, *s1);
2541: break;
2542: }
2543: if (*s3 == *s1) { /* found the final delimiter */
2544: match = 1;
2545: break;
2546: }
2547: s2++;
2548: }
2549:
2550: out:
2551: if (NULL == s3)
2552: s3 = strchr(s2, '\0');
1.242 schwarze 2553: else if (*s3 != '\0')
1.198 schwarze 2554: s3++;
2555: *pos = s3 - v;
1.277 schwarze 2556: return match;
1.198 schwarze 2557: }
2558:
1.204 schwarze 2559: /*
2560: * Evaluate an optionally negated single character, numerical,
2561: * or string condition.
2562: */
1.198 schwarze 2563: static int
1.271 schwarze 2564: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.88 kristaps 2565: {
1.336 schwarze 2566: const char *start, *end;
2567: char *cp, *name;
2568: size_t sz;
2569: int deftype, len, number, savepos, istrue, wanttrue;
1.88 kristaps 2570:
1.198 schwarze 2571: if ('!' == v[*pos]) {
2572: wanttrue = 0;
2573: (*pos)++;
2574: } else
2575: wanttrue = 1;
2576:
1.88 kristaps 2577: switch (v[*pos]) {
1.240 schwarze 2578: case '\0':
1.277 schwarze 2579: return 0;
1.207 schwarze 2580: case 'n':
2581: case 'o':
1.88 kristaps 2582: (*pos)++;
1.277 schwarze 2583: return wanttrue;
1.207 schwarze 2584: case 'e':
2585: case 't':
1.239 schwarze 2586: case 'v':
1.88 kristaps 2587: (*pos)++;
1.277 schwarze 2588: return !wanttrue;
1.336 schwarze 2589: case 'c':
2590: do {
2591: (*pos)++;
2592: } while (v[*pos] == ' ');
2593:
2594: /*
2595: * Quirk for groff compatibility:
2596: * The horizontal tab is neither available nor unavailable.
2597: */
2598:
2599: if (v[*pos] == '\t') {
2600: (*pos)++;
2601: return 0;
2602: }
2603:
2604: /* Printable ASCII characters are available. */
2605:
2606: if (v[*pos] != '\\') {
2607: (*pos)++;
2608: return wanttrue;
2609: }
2610:
2611: end = v + ++*pos;
2612: switch (mandoc_escape(&end, &start, &len)) {
2613: case ESCAPE_SPECIAL:
2614: istrue = mchars_spec2cp(start, len) != -1;
2615: break;
2616: case ESCAPE_UNICODE:
2617: istrue = 1;
2618: break;
2619: case ESCAPE_NUMBERED:
2620: istrue = mchars_num2char(start, len) != -1;
2621: break;
2622: default:
2623: istrue = !wanttrue;
2624: break;
2625: }
2626: *pos = end - v;
2627: return istrue == wanttrue;
1.310 schwarze 2628: case 'd':
1.271 schwarze 2629: case 'r':
1.310 schwarze 2630: cp = v + *pos + 1;
2631: while (*cp == ' ')
2632: cp++;
2633: name = cp;
2634: sz = roff_getname(r, &cp, ln, cp - v);
1.315 schwarze 2635: if (sz == 0)
2636: istrue = 0;
2637: else if (v[*pos] == 'r')
2638: istrue = roff_hasregn(r, name, sz);
2639: else {
2640: deftype = ROFFDEF_ANY;
2641: roff_getstrn(r, name, sz, &deftype);
2642: istrue = !!deftype;
2643: }
1.363 schwarze 2644: *pos = (name + sz) - v;
1.310 schwarze 2645: return istrue == wanttrue;
1.88 kristaps 2646: default:
2647: break;
2648: }
2649:
1.241 schwarze 2650: savepos = *pos;
1.261 schwarze 2651: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.277 schwarze 2652: return (number > 0) == wanttrue;
1.241 schwarze 2653: else if (*pos == savepos)
1.277 schwarze 2654: return roff_evalstrcond(v, pos) == wanttrue;
1.204 schwarze 2655: else
1.277 schwarze 2656: return 0;
1.88 kristaps 2657: }
2658:
1.340 schwarze 2659: static int
1.103 kristaps 2660: roff_line_ignore(ROFF_ARGS)
1.89 kristaps 2661: {
1.123 schwarze 2662:
1.277 schwarze 2663: return ROFF_IGN;
1.89 kristaps 2664: }
2665:
1.340 schwarze 2666: static int
1.251 schwarze 2667: roff_insec(ROFF_ARGS)
2668: {
2669:
1.350 schwarze 2670: mandoc_msg(MANDOCERR_REQ_INSEC, ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2671: return ROFF_IGN;
1.251 schwarze 2672: }
2673:
1.340 schwarze 2674: static int
1.251 schwarze 2675: roff_unsupp(ROFF_ARGS)
2676: {
2677:
1.350 schwarze 2678: mandoc_msg(MANDOCERR_REQ_UNSUPP, ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2679: return ROFF_IGN;
1.251 schwarze 2680: }
2681:
1.340 schwarze 2682: static int
1.82 kristaps 2683: roff_cond(ROFF_ARGS)
1.74 kristaps 2684: {
1.340 schwarze 2685: int irc;
1.173 schwarze 2686:
2687: roffnode_push(r, tok, NULL, ln, ppos);
1.74 kristaps 2688:
1.207 schwarze 2689: /*
1.134 kristaps 2690: * An `.el' has no conditional body: it will consume the value
2691: * of the current rstack entry set in prior `ie' calls or
1.207 schwarze 2692: * defaults to DENY.
1.134 kristaps 2693: *
2694: * If we're not an `el', however, then evaluate the conditional.
2695: */
1.133 kristaps 2696:
1.238 schwarze 2697: r->last->rule = tok == ROFF_el ?
1.207 schwarze 2698: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.238 schwarze 2699: roff_evalcond(r, ln, buf->buf, &pos);
1.77 kristaps 2700:
1.134 kristaps 2701: /*
2702: * An if-else will put the NEGATION of the current evaluated
2703: * conditional into the stack of rules.
2704: */
2705:
1.238 schwarze 2706: if (tok == ROFF_ie) {
1.223 schwarze 2707: if (r->rstackpos + 1 == r->rstacksz) {
2708: r->rstacksz += 16;
2709: r->rstack = mandoc_reallocarray(r->rstack,
2710: r->rstacksz, sizeof(int));
1.134 kristaps 2711: }
1.198 schwarze 2712: r->rstack[++r->rstackpos] = !r->last->rule;
1.82 kristaps 2713: }
1.88 kristaps 2714:
2715: /* If the parent has false as its rule, then so do we. */
2716:
1.198 schwarze 2717: if (r->last->parent && !r->last->parent->rule)
2718: r->last->rule = 0;
1.88 kristaps 2719:
2720: /*
1.173 schwarze 2721: * Determine scope.
2722: * If there is nothing on the line after the conditional,
2723: * not even whitespace, use next-line scope.
1.340 schwarze 2724: * Except that .while does not support next-line scope.
1.88 kristaps 2725: */
1.74 kristaps 2726:
1.340 schwarze 2727: if (buf->buf[pos] == '\0' && tok != ROFF_while) {
1.173 schwarze 2728: r->last->endspan = 2;
2729: goto out;
2730: }
2731:
1.238 schwarze 2732: while (buf->buf[pos] == ' ')
1.173 schwarze 2733: pos++;
2734:
2735: /* An opening brace requests multiline scope. */
1.75 kristaps 2736:
1.238 schwarze 2737: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.75 kristaps 2738: r->last->endspan = -1;
2739: pos += 2;
1.272 schwarze 2740: while (buf->buf[pos] == ' ')
2741: pos++;
1.173 schwarze 2742: goto out;
1.207 schwarze 2743: }
1.74 kristaps 2744:
1.77 kristaps 2745: /*
1.173 schwarze 2746: * Anything else following the conditional causes
2747: * single-line scope. Warn if the scope contains
2748: * nothing but trailing whitespace.
1.77 kristaps 2749: */
2750:
1.238 schwarze 2751: if (buf->buf[pos] == '\0')
1.350 schwarze 2752: mandoc_msg(MANDOCERR_COND_EMPTY,
2753: ln, ppos, "%s", roff_name[tok]);
1.77 kristaps 2754:
1.173 schwarze 2755: r->last->endspan = 1;
1.74 kristaps 2756:
1.173 schwarze 2757: out:
1.75 kristaps 2758: *offs = pos;
1.340 schwarze 2759: irc = ROFF_RERUN;
2760: if (tok == ROFF_while)
2761: irc |= ROFF_WHILE;
2762: return irc;
1.83 schwarze 2763: }
2764:
1.340 schwarze 2765: static int
1.92 schwarze 2766: roff_ds(ROFF_ARGS)
2767: {
1.212 schwarze 2768: char *string;
2769: const char *name;
2770: size_t namesz;
1.96 kristaps 2771:
1.251 schwarze 2772: /* Ignore groff compatibility mode for now. */
2773:
2774: if (tok == ROFF_ds1)
2775: tok = ROFF_ds;
2776: else if (tok == ROFF_as1)
2777: tok = ROFF_as;
2778:
1.96 kristaps 2779: /*
1.212 schwarze 2780: * The first word is the name of the string.
2781: * If it is empty or terminated by an escape sequence,
2782: * abort the `ds' request without defining anything.
1.96 kristaps 2783: */
1.92 schwarze 2784:
1.238 schwarze 2785: name = string = buf->buf + pos;
2786: if (*name == '\0')
1.277 schwarze 2787: return ROFF_IGN;
1.92 schwarze 2788:
1.212 schwarze 2789: namesz = roff_getname(r, &string, ln, pos);
1.363 schwarze 2790: switch (name[namesz]) {
2791: case '\\':
1.277 schwarze 2792: return ROFF_IGN;
1.363 schwarze 2793: case '\t':
2794: string = buf->buf + pos + namesz;
2795: break;
2796: default:
2797: break;
2798: }
1.212 schwarze 2799:
2800: /* Read past the initial double-quote, if any. */
1.238 schwarze 2801: if (*string == '"')
1.92 schwarze 2802: string++;
2803:
1.96 kristaps 2804: /* The rest is the value. */
1.212 schwarze 2805: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2806: ROFF_as == tok);
1.311 schwarze 2807: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.277 schwarze 2808: return ROFF_IGN;
1.92 schwarze 2809: }
2810:
1.204 schwarze 2811: /*
2812: * Parse a single operator, one or two characters long.
2813: * If the operator is recognized, return success and advance the
2814: * parse point, else return failure and let the parse point unchanged.
2815: */
2816: static int
2817: roff_getop(const char *v, int *pos, char *res)
2818: {
2819:
2820: *res = v[*pos];
2821:
2822: switch (*res) {
1.207 schwarze 2823: case '+':
2824: case '-':
2825: case '*':
2826: case '/':
2827: case '%':
2828: case '&':
2829: case ':':
1.204 schwarze 2830: break;
2831: case '<':
2832: switch (v[*pos + 1]) {
1.207 schwarze 2833: case '=':
1.204 schwarze 2834: *res = 'l';
2835: (*pos)++;
2836: break;
1.207 schwarze 2837: case '>':
1.204 schwarze 2838: *res = '!';
2839: (*pos)++;
2840: break;
1.207 schwarze 2841: case '?':
1.204 schwarze 2842: *res = 'i';
2843: (*pos)++;
2844: break;
2845: default:
2846: break;
2847: }
2848: break;
2849: case '>':
2850: switch (v[*pos + 1]) {
1.207 schwarze 2851: case '=':
1.204 schwarze 2852: *res = 'g';
2853: (*pos)++;
2854: break;
1.207 schwarze 2855: case '?':
1.204 schwarze 2856: *res = 'a';
2857: (*pos)++;
2858: break;
2859: default:
2860: break;
2861: }
2862: break;
2863: case '=':
2864: if ('=' == v[*pos + 1])
2865: (*pos)++;
2866: break;
2867: default:
1.277 schwarze 2868: return 0;
1.204 schwarze 2869: }
2870: (*pos)++;
2871:
1.277 schwarze 2872: return *res;
1.204 schwarze 2873: }
2874:
2875: /*
2876: * Evaluate either a parenthesized numeric expression
2877: * or a single signed integer number.
2878: */
2879: static int
1.235 schwarze 2880: roff_evalpar(struct roff *r, int ln,
1.261 schwarze 2881: const char *v, int *pos, int *res, int flags)
1.204 schwarze 2882: {
2883:
2884: if ('(' != v[*pos])
1.277 schwarze 2885: return roff_getnum(v, pos, res, flags);
1.204 schwarze 2886:
2887: (*pos)++;
1.261 schwarze 2888: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.277 schwarze 2889: return 0;
1.204 schwarze 2890:
1.206 schwarze 2891: /*
2892: * Omission of the closing parenthesis
2893: * is an error in validation mode,
2894: * but ignored in evaluation mode.
2895: */
2896:
1.204 schwarze 2897: if (')' == v[*pos])
2898: (*pos)++;
1.206 schwarze 2899: else if (NULL == res)
1.277 schwarze 2900: return 0;
1.204 schwarze 2901:
1.277 schwarze 2902: return 1;
1.204 schwarze 2903: }
2904:
2905: /*
2906: * Evaluate a complete numeric expression.
2907: * Proceed left to right, there is no concept of precedence.
2908: */
2909: static int
1.235 schwarze 2910: roff_evalnum(struct roff *r, int ln, const char *v,
1.261 schwarze 2911: int *pos, int *res, int flags)
1.204 schwarze 2912: {
2913: int mypos, operand2;
2914: char operator;
2915:
2916: if (NULL == pos) {
2917: mypos = 0;
2918: pos = &mypos;
2919: }
2920:
1.261 schwarze 2921: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2922: while (isspace((unsigned char)v[*pos]))
2923: (*pos)++;
2924:
1.261 schwarze 2925: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.277 schwarze 2926: return 0;
1.204 schwarze 2927:
2928: while (1) {
1.261 schwarze 2929: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2930: while (isspace((unsigned char)v[*pos]))
2931: (*pos)++;
2932:
2933: if ( ! roff_getop(v, pos, &operator))
2934: break;
2935:
1.261 schwarze 2936: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2937: while (isspace((unsigned char)v[*pos]))
2938: (*pos)++;
2939:
1.261 schwarze 2940: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.277 schwarze 2941: return 0;
1.204 schwarze 2942:
1.261 schwarze 2943: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2944: while (isspace((unsigned char)v[*pos]))
2945: (*pos)++;
1.206 schwarze 2946:
2947: if (NULL == res)
2948: continue;
1.204 schwarze 2949:
2950: switch (operator) {
1.207 schwarze 2951: case '+':
1.204 schwarze 2952: *res += operand2;
2953: break;
1.207 schwarze 2954: case '-':
1.204 schwarze 2955: *res -= operand2;
2956: break;
1.207 schwarze 2957: case '*':
1.204 schwarze 2958: *res *= operand2;
2959: break;
1.207 schwarze 2960: case '/':
1.244 schwarze 2961: if (operand2 == 0) {
1.235 schwarze 2962: mandoc_msg(MANDOCERR_DIVZERO,
1.350 schwarze 2963: ln, *pos, "%s", v);
1.234 kristaps 2964: *res = 0;
2965: break;
2966: }
1.204 schwarze 2967: *res /= operand2;
2968: break;
1.207 schwarze 2969: case '%':
1.244 schwarze 2970: if (operand2 == 0) {
2971: mandoc_msg(MANDOCERR_DIVZERO,
1.350 schwarze 2972: ln, *pos, "%s", v);
1.244 schwarze 2973: *res = 0;
2974: break;
2975: }
1.204 schwarze 2976: *res %= operand2;
2977: break;
1.207 schwarze 2978: case '<':
1.204 schwarze 2979: *res = *res < operand2;
2980: break;
1.207 schwarze 2981: case '>':
1.204 schwarze 2982: *res = *res > operand2;
2983: break;
1.207 schwarze 2984: case 'l':
1.204 schwarze 2985: *res = *res <= operand2;
2986: break;
1.207 schwarze 2987: case 'g':
1.204 schwarze 2988: *res = *res >= operand2;
2989: break;
1.207 schwarze 2990: case '=':
1.204 schwarze 2991: *res = *res == operand2;
2992: break;
1.207 schwarze 2993: case '!':
1.204 schwarze 2994: *res = *res != operand2;
2995: break;
1.207 schwarze 2996: case '&':
1.204 schwarze 2997: *res = *res && operand2;
2998: break;
1.207 schwarze 2999: case ':':
1.204 schwarze 3000: *res = *res || operand2;
3001: break;
1.207 schwarze 3002: case 'i':
1.204 schwarze 3003: if (operand2 < *res)
3004: *res = operand2;
3005: break;
1.207 schwarze 3006: case 'a':
1.204 schwarze 3007: if (operand2 > *res)
3008: *res = operand2;
3009: break;
3010: default:
3011: abort();
3012: }
3013: }
1.277 schwarze 3014: return 1;
1.204 schwarze 3015: }
3016:
1.266 schwarze 3017: /* --- register management ------------------------------------------------ */
3018:
1.180 schwarze 3019: void
1.187 schwarze 3020: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.147 kristaps 3021: {
1.327 schwarze 3022: roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
1.326 schwarze 3023: }
3024:
3025: static void
3026: roff_setregn(struct roff *r, const char *name, size_t len,
1.327 schwarze 3027: int val, char sign, int step)
1.326 schwarze 3028: {
1.180 schwarze 3029: struct roffreg *reg;
3030:
3031: /* Search for an existing register with the same name. */
3032: reg = r->regtab;
3033:
1.326 schwarze 3034: while (reg != NULL && (reg->key.sz != len ||
3035: strncmp(reg->key.p, name, len) != 0))
1.180 schwarze 3036: reg = reg->next;
1.147 kristaps 3037:
1.180 schwarze 3038: if (NULL == reg) {
3039: /* Create a new register. */
3040: reg = mandoc_malloc(sizeof(struct roffreg));
1.326 schwarze 3041: reg->key.p = mandoc_strndup(name, len);
3042: reg->key.sz = len;
1.187 schwarze 3043: reg->val = 0;
1.327 schwarze 3044: reg->step = 0;
1.180 schwarze 3045: reg->next = r->regtab;
3046: r->regtab = reg;
3047: }
3048:
1.187 schwarze 3049: if ('+' == sign)
3050: reg->val += val;
3051: else if ('-' == sign)
3052: reg->val -= val;
3053: else
3054: reg->val = val;
1.327 schwarze 3055: if (step != INT_MIN)
3056: reg->step = step;
1.147 kristaps 3057: }
3058:
1.192 schwarze 3059: /*
3060: * Handle some predefined read-only number registers.
3061: * For now, return -1 if the requested register is not predefined;
3062: * in case a predefined read-only register having the value -1
3063: * were to turn up, another special value would have to be chosen.
3064: */
3065: static int
1.273 schwarze 3066: roff_getregro(const struct roff *r, const char *name)
1.192 schwarze 3067: {
3068:
3069: switch (*name) {
1.273 schwarze 3070: case '$': /* Number of arguments of the last macro evaluated. */
1.339 schwarze 3071: return r->mstackpos < 0 ? 0 : r->mstack[r->mstackpos].argc;
1.207 schwarze 3072: case 'A': /* ASCII approximation mode is always off. */
1.277 schwarze 3073: return 0;
1.207 schwarze 3074: case 'g': /* Groff compatibility mode is always on. */
1.277 schwarze 3075: return 1;
1.207 schwarze 3076: case 'H': /* Fixed horizontal resolution. */
1.277 schwarze 3077: return 24;
1.207 schwarze 3078: case 'j': /* Always adjust left margin only. */
1.277 schwarze 3079: return 0;
1.207 schwarze 3080: case 'T': /* Some output device is always defined. */
1.277 schwarze 3081: return 1;
1.207 schwarze 3082: case 'V': /* Fixed vertical resolution. */
1.277 schwarze 3083: return 40;
1.192 schwarze 3084: default:
1.277 schwarze 3085: return -1;
1.192 schwarze 3086: }
3087: }
3088:
1.181 schwarze 3089: int
1.326 schwarze 3090: roff_getreg(struct roff *r, const char *name)
1.147 kristaps 3091: {
1.327 schwarze 3092: return roff_getregn(r, name, strlen(name), '\0');
1.181 schwarze 3093: }
3094:
3095: static int
1.327 schwarze 3096: roff_getregn(struct roff *r, const char *name, size_t len, char sign)
1.181 schwarze 3097: {
3098: struct roffreg *reg;
1.192 schwarze 3099: int val;
3100:
3101: if ('.' == name[0] && 2 == len) {
1.273 schwarze 3102: val = roff_getregro(r, name + 1);
1.192 schwarze 3103: if (-1 != val)
1.277 schwarze 3104: return val;
1.192 schwarze 3105: }
1.181 schwarze 3106:
1.327 schwarze 3107: for (reg = r->regtab; reg; reg = reg->next) {
1.181 schwarze 3108: if (len == reg->key.sz &&
1.327 schwarze 3109: 0 == strncmp(name, reg->key.p, len)) {
3110: switch (sign) {
3111: case '+':
3112: reg->val += reg->step;
3113: break;
3114: case '-':
3115: reg->val -= reg->step;
3116: break;
3117: default:
3118: break;
3119: }
1.277 schwarze 3120: return reg->val;
1.327 schwarze 3121: }
3122: }
1.271 schwarze 3123:
1.327 schwarze 3124: roff_setregn(r, name, len, 0, '\0', INT_MIN);
1.277 schwarze 3125: return 0;
1.271 schwarze 3126: }
3127:
3128: static int
3129: roff_hasregn(const struct roff *r, const char *name, size_t len)
3130: {
3131: struct roffreg *reg;
3132: int val;
3133:
3134: if ('.' == name[0] && 2 == len) {
1.273 schwarze 3135: val = roff_getregro(r, name + 1);
1.271 schwarze 3136: if (-1 != val)
1.277 schwarze 3137: return 1;
1.271 schwarze 3138: }
3139:
3140: for (reg = r->regtab; reg; reg = reg->next)
3141: if (len == reg->key.sz &&
3142: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 3143: return 1;
1.147 kristaps 3144:
1.277 schwarze 3145: return 0;
1.147 kristaps 3146: }
3147:
1.180 schwarze 3148: static void
3149: roff_freereg(struct roffreg *reg)
1.147 kristaps 3150: {
1.180 schwarze 3151: struct roffreg *old_reg;
1.147 kristaps 3152:
1.180 schwarze 3153: while (NULL != reg) {
3154: free(reg->key.p);
3155: old_reg = reg;
3156: reg = reg->next;
3157: free(old_reg);
3158: }
1.147 kristaps 3159: }
1.92 schwarze 3160:
1.340 schwarze 3161: static int
1.89 kristaps 3162: roff_nr(ROFF_ARGS)
1.83 schwarze 3163: {
1.327 schwarze 3164: char *key, *val, *step;
1.212 schwarze 3165: size_t keysz;
1.327 schwarze 3166: int iv, is, len;
1.187 schwarze 3167: char sign;
1.89 kristaps 3168:
1.238 schwarze 3169: key = val = buf->buf + pos;
3170: if (*key == '\0')
1.277 schwarze 3171: return ROFF_IGN;
1.212 schwarze 3172:
3173: keysz = roff_getname(r, &val, ln, pos);
1.363 schwarze 3174: if (key[keysz] == '\\' || key[keysz] == '\t')
1.277 schwarze 3175: return ROFF_IGN;
1.89 kristaps 3176:
1.187 schwarze 3177: sign = *val;
1.238 schwarze 3178: if (sign == '+' || sign == '-')
1.187 schwarze 3179: val++;
3180:
1.327 schwarze 3181: len = 0;
3182: if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
3183: return ROFF_IGN;
3184:
3185: step = val + len;
3186: while (isspace((unsigned char)*step))
3187: step++;
3188: if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)
3189: is = INT_MIN;
1.109 kristaps 3190:
1.327 schwarze 3191: roff_setregn(r, key, keysz, iv, sign, is);
1.277 schwarze 3192: return ROFF_IGN;
1.203 schwarze 3193: }
3194:
1.340 schwarze 3195: static int
1.203 schwarze 3196: roff_rr(ROFF_ARGS)
3197: {
3198: struct roffreg *reg, **prev;
1.212 schwarze 3199: char *name, *cp;
3200: size_t namesz;
1.203 schwarze 3201:
1.238 schwarze 3202: name = cp = buf->buf + pos;
3203: if (*name == '\0')
1.277 schwarze 3204: return ROFF_IGN;
1.212 schwarze 3205: namesz = roff_getname(r, &cp, ln, pos);
3206: name[namesz] = '\0';
1.203 schwarze 3207:
3208: prev = &r->regtab;
3209: while (1) {
3210: reg = *prev;
1.238 schwarze 3211: if (reg == NULL || !strcmp(name, reg->key.p))
1.203 schwarze 3212: break;
3213: prev = ®->next;
3214: }
1.238 schwarze 3215: if (reg != NULL) {
1.203 schwarze 3216: *prev = reg->next;
3217: free(reg->key.p);
3218: free(reg);
3219: }
1.277 schwarze 3220: return ROFF_IGN;
1.122 schwarze 3221: }
3222:
1.266 schwarze 3223: /* --- handler functions for roff requests -------------------------------- */
3224:
1.340 schwarze 3225: static int
1.122 schwarze 3226: roff_rm(ROFF_ARGS)
3227: {
3228: const char *name;
3229: char *cp;
1.212 schwarze 3230: size_t namesz;
1.122 schwarze 3231:
1.238 schwarze 3232: cp = buf->buf + pos;
3233: while (*cp != '\0') {
1.212 schwarze 3234: name = cp;
1.238 schwarze 3235: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.212 schwarze 3236: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.311 schwarze 3237: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.363 schwarze 3238: if (name[namesz] == '\\' || name[namesz] == '\t')
1.212 schwarze 3239: break;
1.122 schwarze 3240: }
1.277 schwarze 3241: return ROFF_IGN;
1.178 schwarze 3242: }
3243:
1.340 schwarze 3244: static int
1.178 schwarze 3245: roff_it(ROFF_ARGS)
3246: {
3247: int iv;
3248:
3249: /* Parse the number of lines. */
1.261 schwarze 3250:
3251: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.350 schwarze 3252: mandoc_msg(MANDOCERR_IT_NONUM,
3253: ln, ppos, "%s", buf->buf + 1);
1.277 schwarze 3254: return ROFF_IGN;
1.178 schwarze 3255: }
3256:
1.262 schwarze 3257: while (isspace((unsigned char)buf->buf[pos]))
3258: pos++;
3259:
3260: /*
3261: * Arm the input line trap.
3262: * Special-casing "an-trap" is an ugly workaround to cope
3263: * with DocBook stupidly fiddling with man(7) internals.
3264: */
1.261 schwarze 3265:
1.178 schwarze 3266: roffit_lines = iv;
1.262 schwarze 3267: roffit_macro = mandoc_strdup(iv != 1 ||
3268: strcmp(buf->buf + pos, "an-trap") ?
3269: buf->buf + pos : "br");
1.277 schwarze 3270: return ROFF_IGN;
1.175 schwarze 3271: }
3272:
1.340 schwarze 3273: static int
1.175 schwarze 3274: roff_Dd(ROFF_ARGS)
3275: {
1.315 schwarze 3276: int mask;
3277: enum roff_tok t, te;
1.227 schwarze 3278:
1.315 schwarze 3279: switch (tok) {
3280: case ROFF_Dd:
3281: tok = MDOC_Dd;
3282: te = MDOC_MAX;
3283: if (r->format == 0)
3284: r->format = MPARSE_MDOC;
3285: mask = MPARSE_MDOC | MPARSE_QUICK;
3286: break;
3287: case ROFF_TH:
3288: tok = MAN_TH;
3289: te = MAN_MAX;
3290: if (r->format == 0)
3291: r->format = MPARSE_MAN;
3292: mask = MPARSE_QUICK;
3293: break;
3294: default:
3295: abort();
3296: }
3297: if ((r->options & mask) == 0)
3298: for (t = tok; t < te; t++)
3299: roff_setstr(r, roff_name[t], NULL, 0);
1.277 schwarze 3300: return ROFF_CONT;
1.109 kristaps 3301: }
3302:
1.340 schwarze 3303: static int
1.109 kristaps 3304: roff_TE(ROFF_ARGS)
3305: {
1.361 schwarze 3306: r->man->flags &= ~ROFF_NONOFILL;
1.321 schwarze 3307: if (r->tbl == NULL) {
1.350 schwarze 3308: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "TE");
1.321 schwarze 3309: return ROFF_IGN;
3310: }
1.346 schwarze 3311: if (tbl_end(r->tbl, 0) == 0) {
1.321 schwarze 3312: r->tbl = NULL;
1.258 schwarze 3313: free(buf->buf);
3314: buf->buf = mandoc_strdup(".sp");
3315: buf->sz = 4;
1.329 schwarze 3316: *offs = 0;
1.277 schwarze 3317: return ROFF_REPARSE;
1.258 schwarze 3318: }
1.321 schwarze 3319: r->tbl = NULL;
1.277 schwarze 3320: return ROFF_IGN;
1.112 kristaps 3321: }
3322:
1.340 schwarze 3323: static int
1.112 kristaps 3324: roff_T_(ROFF_ARGS)
3325: {
3326:
3327: if (NULL == r->tbl)
1.350 schwarze 3328: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "T&");
1.112 kristaps 3329: else
1.296 schwarze 3330: tbl_restart(ln, ppos, r->tbl);
1.112 kristaps 3331:
1.277 schwarze 3332: return ROFF_IGN;
1.109 kristaps 3333: }
3334:
1.230 schwarze 3335: /*
3336: * Handle in-line equation delimiters.
3337: */
1.340 schwarze 3338: static int
1.238 schwarze 3339: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.151 kristaps 3340: {
1.233 schwarze 3341: char *cp1, *cp2;
3342: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.151 kristaps 3343:
1.230 schwarze 3344: /*
3345: * Outside equations, look for an opening delimiter.
3346: * If we are inside an equation, we already know it is
3347: * in-line, or this function wouldn't have been called;
3348: * so look for a closing delimiter.
3349: */
3350:
1.238 schwarze 3351: cp1 = buf->buf + pos;
1.230 schwarze 3352: cp2 = strchr(cp1, r->eqn == NULL ?
3353: r->last_eqn->odelim : r->last_eqn->cdelim);
3354: if (cp2 == NULL)
1.277 schwarze 3355: return ROFF_CONT;
1.230 schwarze 3356:
1.233 schwarze 3357: *cp2++ = '\0';
3358: bef_pr = bef_nl = aft_nl = aft_pr = "";
3359:
3360: /* Handle preceding text, protecting whitespace. */
3361:
1.238 schwarze 3362: if (*buf->buf != '\0') {
1.233 schwarze 3363: if (r->eqn == NULL)
3364: bef_pr = "\\&";
3365: bef_nl = "\n";
3366: }
3367:
3368: /*
3369: * Prepare replacing the delimiter with an equation macro
3370: * and drop leading white space from the equation.
3371: */
1.230 schwarze 3372:
1.233 schwarze 3373: if (r->eqn == NULL) {
3374: while (*cp2 == ' ')
3375: cp2++;
3376: mac = ".EQ";
3377: } else
3378: mac = ".EN";
3379:
3380: /* Handle following text, protecting whitespace. */
3381:
3382: if (*cp2 != '\0') {
3383: aft_nl = "\n";
3384: if (r->eqn != NULL)
3385: aft_pr = "\\&";
3386: }
3387:
3388: /* Do the actual replacement. */
3389:
1.238 schwarze 3390: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.233 schwarze 3391: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.238 schwarze 3392: free(buf->buf);
3393: buf->buf = cp1;
1.230 schwarze 3394:
3395: /* Toggle the in-line state of the eqn subsystem. */
3396:
3397: r->eqn_inline = r->eqn == NULL;
1.277 schwarze 3398: return ROFF_REPARSE;
1.151 kristaps 3399: }
3400:
1.340 schwarze 3401: static int
1.235 schwarze 3402: roff_EQ(ROFF_ARGS)
1.125 kristaps 3403: {
1.319 schwarze 3404: struct roff_node *n;
3405:
1.356 schwarze 3406: if (r->man->meta.macroset == MACROSET_MAN)
1.322 schwarze 3407: man_breakscope(r->man, ROFF_EQ);
1.319 schwarze 3408: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
3409: if (ln > r->man->last->line)
3410: n->flags |= NODE_LINE;
1.348 schwarze 3411: n->eqn = eqn_box_new();
1.319 schwarze 3412: roff_node_append(r->man, n);
3413: r->man->next = ROFF_NEXT_SIBLING;
1.125 kristaps 3414:
1.238 schwarze 3415: assert(r->eqn == NULL);
1.319 schwarze 3416: if (r->last_eqn == NULL)
1.351 schwarze 3417: r->last_eqn = eqn_alloc();
1.319 schwarze 3418: else
3419: eqn_reset(r->last_eqn);
3420: r->eqn = r->last_eqn;
3421: r->eqn->node = n;
1.151 kristaps 3422:
1.238 schwarze 3423: if (buf->buf[pos] != '\0')
1.350 schwarze 3424: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.238 schwarze 3425: ".EQ %s", buf->buf + pos);
1.151 kristaps 3426:
1.277 schwarze 3427: return ROFF_IGN;
1.125 kristaps 3428: }
3429:
1.340 schwarze 3430: static int
1.125 kristaps 3431: roff_EN(ROFF_ARGS)
3432: {
1.319 schwarze 3433: if (r->eqn != NULL) {
3434: eqn_parse(r->eqn);
3435: r->eqn = NULL;
3436: } else
1.350 schwarze 3437: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "EN");
1.319 schwarze 3438: if (buf->buf[pos] != '\0')
1.350 schwarze 3439: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.319 schwarze 3440: "EN %s", buf->buf + pos);
1.277 schwarze 3441: return ROFF_IGN;
1.125 kristaps 3442: }
3443:
1.340 schwarze 3444: static int
1.109 kristaps 3445: roff_TS(ROFF_ARGS)
3446: {
1.321 schwarze 3447: if (r->tbl != NULL) {
1.350 schwarze 3448: mandoc_msg(MANDOCERR_BLK_BROKEN, ln, ppos, "TS breaks TS");
1.346 schwarze 3449: tbl_end(r->tbl, 0);
1.115 kristaps 3450: }
1.361 schwarze 3451: r->man->flags |= ROFF_NONOFILL;
1.351 schwarze 3452: r->tbl = tbl_alloc(ppos, ln, r->last_tbl);
1.346 schwarze 3453: if (r->last_tbl == NULL)
1.321 schwarze 3454: r->first_tbl = r->tbl;
3455: r->last_tbl = r->tbl;
1.297 schwarze 3456: return ROFF_IGN;
3457: }
3458:
1.340 schwarze 3459: static int
1.358 schwarze 3460: roff_noarg(ROFF_ARGS)
3461: {
3462: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3463: man_breakscope(r->man, tok);
3464: if (tok == ROFF_brp)
3465: tok = ROFF_br;
3466: roff_elem_alloc(r->man, ln, ppos, tok);
3467: if (buf->buf[pos] != '\0')
3468: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
3469: "%s %s", roff_name[tok], buf->buf + pos);
3470: if (tok == ROFF_nf)
3471: r->man->flags |= ROFF_NOFILL;
3472: else if (tok == ROFF_fi)
3473: r->man->flags &= ~ROFF_NOFILL;
3474: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3475: r->man->next = ROFF_NEXT_SIBLING;
3476: return ROFF_IGN;
3477: }
3478:
3479: static int
1.297 schwarze 3480: roff_onearg(ROFF_ARGS)
3481: {
3482: struct roff_node *n;
3483: char *cp;
1.305 schwarze 3484: int npos;
1.297 schwarze 3485:
1.302 schwarze 3486: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.320 schwarze 3487: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
3488: tok == ROFF_ti))
1.302 schwarze 3489: man_breakscope(r->man, tok);
3490:
1.309 schwarze 3491: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.305 schwarze 3492: r->man->last = roffce_node;
3493: r->man->next = ROFF_NEXT_SIBLING;
3494: }
3495:
1.297 schwarze 3496: roff_elem_alloc(r->man, ln, ppos, tok);
3497: n = r->man->last;
3498:
3499: cp = buf->buf + pos;
3500: if (*cp != '\0') {
3501: while (*cp != '\0' && *cp != ' ')
3502: cp++;
3503: while (*cp == ' ')
3504: *cp++ = '\0';
3505: if (*cp != '\0')
1.350 schwarze 3506: mandoc_msg(MANDOCERR_ARG_EXCESS,
3507: ln, (int)(cp - buf->buf),
1.297 schwarze 3508: "%s ... %s", roff_name[tok], cp);
3509: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.300 schwarze 3510: }
3511:
1.309 schwarze 3512: if (tok == ROFF_ce || tok == ROFF_rj) {
3513: if (r->man->last->type == ROFFT_ELEM) {
1.305 schwarze 3514: roff_word_alloc(r->man, ln, pos, "1");
3515: r->man->last->flags |= NODE_NOSRC;
3516: }
3517: npos = 0;
3518: if (roff_evalnum(r, ln, r->man->last->string, &npos,
3519: &roffce_lines, 0) == 0) {
1.350 schwarze 3520: mandoc_msg(MANDOCERR_CE_NONUM,
3521: ln, pos, "ce %s", buf->buf + pos);
1.305 schwarze 3522: roffce_lines = 1;
3523: }
3524: if (roffce_lines < 1) {
3525: r->man->last = r->man->last->parent;
3526: roffce_node = NULL;
3527: roffce_lines = 0;
3528: } else
3529: roffce_node = r->man->last->parent;
3530: } else {
3531: n->flags |= NODE_VALID | NODE_ENDED;
3532: r->man->last = n;
3533: }
3534: n->flags |= NODE_LINE;
1.300 schwarze 3535: r->man->next = ROFF_NEXT_SIBLING;
3536: return ROFF_IGN;
3537: }
3538:
1.340 schwarze 3539: static int
1.300 schwarze 3540: roff_manyarg(ROFF_ARGS)
3541: {
3542: struct roff_node *n;
3543: char *sp, *ep;
3544:
3545: roff_elem_alloc(r->man, ln, ppos, tok);
3546: n = r->man->last;
3547:
3548: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3549: while (*ep != '\0' && *ep != ' ')
3550: ep++;
3551: while (*ep == ' ')
3552: *ep++ = '\0';
3553: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.297 schwarze 3554: }
3555:
3556: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3557: r->man->last = n;
3558: r->man->next = ROFF_NEXT_SIBLING;
1.277 schwarze 3559: return ROFF_IGN;
1.251 schwarze 3560: }
3561:
1.340 schwarze 3562: static int
1.311 schwarze 3563: roff_als(ROFF_ARGS)
3564: {
3565: char *oldn, *newn, *end, *value;
3566: size_t oldsz, newsz, valsz;
3567:
3568: newn = oldn = buf->buf + pos;
3569: if (*newn == '\0')
3570: return ROFF_IGN;
3571:
3572: newsz = roff_getname(r, &oldn, ln, pos);
1.363 schwarze 3573: if (newn[newsz] == '\\' || newn[newsz] == '\t' || *oldn == '\0')
1.311 schwarze 3574: return ROFF_IGN;
3575:
3576: end = oldn;
3577: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3578: if (oldsz == 0)
3579: return ROFF_IGN;
3580:
1.338 schwarze 3581: valsz = mandoc_asprintf(&value, ".%.*s \\$@\\\"\n",
1.315 schwarze 3582: (int)oldsz, oldn);
1.311 schwarze 3583: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3584: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3585: free(value);
1.364 schwarze 3586: return ROFF_IGN;
3587: }
3588:
3589: /*
3590: * The .break request only makes sense inside conditionals,
3591: * and that case is already handled in roff_cond_sub().
3592: */
3593: static int
3594: roff_break(ROFF_ARGS)
3595: {
3596: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, pos, "break");
1.296 schwarze 3597: return ROFF_IGN;
1.92 schwarze 3598: }
3599:
1.340 schwarze 3600: static int
1.174 kristaps 3601: roff_cc(ROFF_ARGS)
3602: {
3603: const char *p;
3604:
1.238 schwarze 3605: p = buf->buf + pos;
1.174 kristaps 3606:
1.238 schwarze 3607: if (*p == '\0' || (r->control = *p++) == '.')
1.303 schwarze 3608: r->control = '\0';
1.174 kristaps 3609:
1.238 schwarze 3610: if (*p != '\0')
1.350 schwarze 3611: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.260 schwarze 3612: ln, p - buf->buf, "cc ... %s", p);
1.174 kristaps 3613:
1.341 schwarze 3614: return ROFF_IGN;
3615: }
3616:
3617: static int
3618: roff_char(ROFF_ARGS)
3619: {
3620: const char *p, *kp, *vp;
3621: size_t ksz, vsz;
3622: int font;
3623:
3624: /* Parse the character to be replaced. */
3625:
3626: kp = buf->buf + pos;
3627: p = kp + 1;
3628: if (*kp == '\0' || (*kp == '\\' &&
3629: mandoc_escape(&p, NULL, NULL) != ESCAPE_SPECIAL) ||
3630: (*p != ' ' && *p != '\0')) {
1.350 schwarze 3631: mandoc_msg(MANDOCERR_CHAR_ARG, ln, pos, "char %s", kp);
1.341 schwarze 3632: return ROFF_IGN;
3633: }
3634: ksz = p - kp;
3635: while (*p == ' ')
3636: p++;
3637:
3638: /*
3639: * If the replacement string contains a font escape sequence,
3640: * we have to restore the font at the end.
3641: */
3642:
3643: vp = p;
3644: vsz = strlen(p);
3645: font = 0;
3646: while (*p != '\0') {
3647: if (*p++ != '\\')
3648: continue;
3649: switch (mandoc_escape(&p, NULL, NULL)) {
3650: case ESCAPE_FONT:
3651: case ESCAPE_FONTROMAN:
3652: case ESCAPE_FONTITALIC:
3653: case ESCAPE_FONTBOLD:
3654: case ESCAPE_FONTBI:
1.342 schwarze 3655: case ESCAPE_FONTCW:
1.341 schwarze 3656: case ESCAPE_FONTPREV:
3657: font++;
3658: break;
3659: default:
3660: break;
3661: }
3662: }
3663: if (font > 1)
1.350 schwarze 3664: mandoc_msg(MANDOCERR_CHAR_FONT,
3665: ln, (int)(vp - buf->buf), "%s", vp);
1.341 schwarze 3666:
3667: /*
3668: * Approximate the effect of .char using the .tr tables.
3669: * XXX In groff, .char and .tr interact differently.
3670: */
3671:
3672: if (ksz == 1) {
3673: if (r->xtab == NULL)
3674: r->xtab = mandoc_calloc(128, sizeof(*r->xtab));
3675: assert((unsigned int)*kp < 128);
3676: free(r->xtab[(int)*kp].p);
3677: r->xtab[(int)*kp].sz = mandoc_asprintf(&r->xtab[(int)*kp].p,
3678: "%s%s", vp, font ? "\fP" : "");
3679: } else {
3680: roff_setstrn(&r->xmbtab, kp, ksz, vp, vsz, 0);
3681: if (font)
3682: roff_setstrn(&r->xmbtab, kp, ksz, "\\fP", 3, 1);
3683: }
1.277 schwarze 3684: return ROFF_IGN;
1.174 kristaps 3685: }
3686:
1.340 schwarze 3687: static int
1.303 schwarze 3688: roff_ec(ROFF_ARGS)
3689: {
3690: const char *p;
3691:
3692: p = buf->buf + pos;
3693: if (*p == '\0')
3694: r->escape = '\\';
3695: else {
3696: r->escape = *p;
3697: if (*++p != '\0')
1.350 schwarze 3698: mandoc_msg(MANDOCERR_ARG_EXCESS, ln,
3699: (int)(p - buf->buf), "ec ... %s", p);
1.303 schwarze 3700: }
3701: return ROFF_IGN;
3702: }
3703:
1.340 schwarze 3704: static int
1.303 schwarze 3705: roff_eo(ROFF_ARGS)
3706: {
3707: r->escape = '\0';
3708: if (buf->buf[pos] != '\0')
1.350 schwarze 3709: mandoc_msg(MANDOCERR_ARG_SKIP,
1.303 schwarze 3710: ln, pos, "eo %s", buf->buf + pos);
3711: return ROFF_IGN;
1.330 schwarze 3712: }
3713:
1.340 schwarze 3714: static int
1.330 schwarze 3715: roff_nop(ROFF_ARGS)
3716: {
3717: while (buf->buf[pos] == ' ')
3718: pos++;
3719: *offs = pos;
3720: return ROFF_RERUN;
1.303 schwarze 3721: }
3722:
1.340 schwarze 3723: static int
1.164 kristaps 3724: roff_tr(ROFF_ARGS)
3725: {
3726: const char *p, *first, *second;
3727: size_t fsz, ssz;
3728: enum mandoc_esc esc;
3729:
1.238 schwarze 3730: p = buf->buf + pos;
1.164 kristaps 3731:
1.238 schwarze 3732: if (*p == '\0') {
1.350 schwarze 3733: mandoc_msg(MANDOCERR_REQ_EMPTY, ln, ppos, "tr");
1.277 schwarze 3734: return ROFF_IGN;
1.164 kristaps 3735: }
3736:
1.238 schwarze 3737: while (*p != '\0') {
1.164 kristaps 3738: fsz = ssz = 1;
3739:
3740: first = p++;
1.238 schwarze 3741: if (*first == '\\') {
1.164 kristaps 3742: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3743: if (esc == ESCAPE_ERROR) {
1.350 schwarze 3744: mandoc_msg(MANDOCERR_ESC_BAD, ln,
3745: (int)(p - buf->buf), "%s", first);
1.277 schwarze 3746: return ROFF_IGN;
1.164 kristaps 3747: }
3748: fsz = (size_t)(p - first);
3749: }
3750:
3751: second = p++;
1.238 schwarze 3752: if (*second == '\\') {
1.164 kristaps 3753: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3754: if (esc == ESCAPE_ERROR) {
1.350 schwarze 3755: mandoc_msg(MANDOCERR_ESC_BAD, ln,
3756: (int)(p - buf->buf), "%s", second);
1.277 schwarze 3757: return ROFF_IGN;
1.164 kristaps 3758: }
3759: ssz = (size_t)(p - second);
1.238 schwarze 3760: } else if (*second == '\0') {
1.350 schwarze 3761: mandoc_msg(MANDOCERR_TR_ODD, ln,
3762: (int)(first - buf->buf), "tr %s", first);
1.164 kristaps 3763: second = " ";
1.165 kristaps 3764: p--;
1.164 kristaps 3765: }
3766:
1.167 kristaps 3767: if (fsz > 1) {
1.207 schwarze 3768: roff_setstrn(&r->xmbtab, first, fsz,
3769: second, ssz, 0);
1.167 kristaps 3770: continue;
3771: }
3772:
1.238 schwarze 3773: if (r->xtab == NULL)
1.207 schwarze 3774: r->xtab = mandoc_calloc(128,
3775: sizeof(struct roffstr));
1.167 kristaps 3776:
3777: free(r->xtab[(int)*first].p);
3778: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3779: r->xtab[(int)*first].sz = ssz;
1.164 kristaps 3780: }
3781:
1.277 schwarze 3782: return ROFF_IGN;
1.164 kristaps 3783: }
3784:
1.339 schwarze 3785: /*
3786: * Implementation of the .return request.
3787: * There is no need to call roff_userret() from here.
3788: * The read module will call that after rewinding the reader stack
3789: * to the place from where the current macro was called.
3790: */
1.340 schwarze 3791: static int
1.339 schwarze 3792: roff_return(ROFF_ARGS)
3793: {
3794: if (r->mstackpos >= 0)
1.340 schwarze 3795: return ROFF_IGN | ROFF_USERRET;
1.339 schwarze 3796:
1.350 schwarze 3797: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "return");
1.339 schwarze 3798: return ROFF_IGN;
3799: }
3800:
1.340 schwarze 3801: static int
1.306 schwarze 3802: roff_rn(ROFF_ARGS)
3803: {
3804: const char *value;
3805: char *oldn, *newn, *end;
3806: size_t oldsz, newsz;
1.315 schwarze 3807: int deftype;
1.306 schwarze 3808:
3809: oldn = newn = buf->buf + pos;
3810: if (*oldn == '\0')
3811: return ROFF_IGN;
3812:
3813: oldsz = roff_getname(r, &newn, ln, pos);
1.363 schwarze 3814: if (oldn[oldsz] == '\\' || oldn[oldsz] == '\t' || *newn == '\0')
1.306 schwarze 3815: return ROFF_IGN;
3816:
3817: end = newn;
3818: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3819: if (newsz == 0)
3820: return ROFF_IGN;
3821:
1.315 schwarze 3822: deftype = ROFFDEF_ANY;
3823: value = roff_getstrn(r, oldn, oldsz, &deftype);
3824: switch (deftype) {
3825: case ROFFDEF_USER:
1.306 schwarze 3826: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3827: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3828: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.315 schwarze 3829: break;
3830: case ROFFDEF_PRE:
3831: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3832: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3833: break;
3834: case ROFFDEF_REN:
1.306 schwarze 3835: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3836: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.315 schwarze 3837: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3838: break;
3839: case ROFFDEF_STD:
1.306 schwarze 3840: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.315 schwarze 3841: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3842: break;
3843: default:
3844: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3845: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3846: break;
3847: }
1.306 schwarze 3848: return ROFF_IGN;
3849: }
3850:
1.340 schwarze 3851: static int
1.339 schwarze 3852: roff_shift(ROFF_ARGS)
3853: {
3854: struct mctx *ctx;
3855: int levels, i;
3856:
3857: levels = 1;
3858: if (buf->buf[pos] != '\0' &&
3859: roff_evalnum(r, ln, buf->buf, &pos, &levels, 0) == 0) {
1.350 schwarze 3860: mandoc_msg(MANDOCERR_CE_NONUM,
1.339 schwarze 3861: ln, pos, "shift %s", buf->buf + pos);
3862: levels = 1;
3863: }
3864: if (r->mstackpos < 0) {
1.350 schwarze 3865: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "shift");
1.339 schwarze 3866: return ROFF_IGN;
3867: }
3868: ctx = r->mstack + r->mstackpos;
3869: if (levels > ctx->argc) {
1.350 schwarze 3870: mandoc_msg(MANDOCERR_SHIFT,
1.339 schwarze 3871: ln, pos, "%d, but max is %d", levels, ctx->argc);
3872: levels = ctx->argc;
3873: }
3874: if (levels == 0)
3875: return ROFF_IGN;
3876: for (i = 0; i < levels; i++)
3877: free(ctx->argv[i]);
3878: ctx->argc -= levels;
3879: for (i = 0; i < ctx->argc; i++)
3880: ctx->argv[i] = ctx->argv[i + levels];
3881: return ROFF_IGN;
3882: }
3883:
1.340 schwarze 3884: static int
1.105 kristaps 3885: roff_so(ROFF_ARGS)
3886: {
1.249 schwarze 3887: char *name, *cp;
1.105 kristaps 3888:
1.238 schwarze 3889: name = buf->buf + pos;
1.350 schwarze 3890: mandoc_msg(MANDOCERR_SO, ln, ppos, "so %s", name);
1.105 kristaps 3891:
3892: /*
3893: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3894: * opening anything that's not in our cwd or anything beneath
3895: * it. Thus, explicitly disallow traversing up the file-system
3896: * or using absolute paths.
3897: */
3898:
1.238 schwarze 3899: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.350 schwarze 3900: mandoc_msg(MANDOCERR_SO_PATH, ln, ppos, ".so %s", name);
1.249 schwarze 3901: buf->sz = mandoc_asprintf(&cp,
3902: ".sp\nSee the file %s.\n.sp", name) + 1;
3903: free(buf->buf);
3904: buf->buf = cp;
3905: *offs = 0;
1.277 schwarze 3906: return ROFF_REPARSE;
1.105 kristaps 3907: }
3908:
3909: *offs = pos;
1.277 schwarze 3910: return ROFF_SO;
1.105 kristaps 3911: }
1.92 schwarze 3912:
1.266 schwarze 3913: /* --- user defined strings and macros ------------------------------------ */
3914:
1.340 schwarze 3915: static int
1.106 kristaps 3916: roff_userdef(ROFF_ARGS)
1.99 kristaps 3917: {
1.339 schwarze 3918: struct mctx *ctx;
3919: char *arg, *ap, *dst, *src;
3920: size_t sz;
3921:
1.365 schwarze 3922: /* If the macro is empty, ignore it altogether. */
3923:
3924: if (*r->current_string == '\0')
3925: return ROFF_IGN;
3926:
1.339 schwarze 3927: /* Initialize a new macro stack context. */
3928:
3929: if (++r->mstackpos == r->mstacksz) {
3930: r->mstack = mandoc_recallocarray(r->mstack,
3931: r->mstacksz, r->mstacksz + 8, sizeof(*r->mstack));
3932: r->mstacksz += 8;
3933: }
3934: ctx = r->mstack + r->mstackpos;
3935: ctx->argsz = 0;
3936: ctx->argc = 0;
3937: ctx->argv = NULL;
3938:
3939: /*
3940: * Collect pointers to macro argument strings,
3941: * NUL-terminating them and escaping quotes.
3942: */
3943:
3944: src = buf->buf + pos;
3945: while (*src != '\0') {
3946: if (ctx->argc == ctx->argsz) {
3947: ctx->argsz += 8;
3948: ctx->argv = mandoc_reallocarray(ctx->argv,
3949: ctx->argsz, sizeof(*ctx->argv));
3950: }
1.355 schwarze 3951: arg = roff_getarg(r, &src, ln, &pos);
1.339 schwarze 3952: sz = 1; /* For the terminating NUL. */
3953: for (ap = arg; *ap != '\0'; ap++)
3954: sz += *ap == '"' ? 4 : 1;
3955: ctx->argv[ctx->argc++] = dst = mandoc_malloc(sz);
3956: for (ap = arg; *ap != '\0'; ap++) {
3957: if (*ap == '"') {
3958: memcpy(dst, "\\(dq", 4);
3959: dst += 4;
3960: } else
3961: *dst++ = *ap;
1.106 kristaps 3962: }
1.339 schwarze 3963: *dst = '\0';
1.355 schwarze 3964: free(arg);
1.337 schwarze 3965: }
3966:
1.339 schwarze 3967: /* Replace the macro invocation by the macro definition. */
1.263 schwarze 3968:
1.238 schwarze 3969: free(buf->buf);
1.339 schwarze 3970: buf->buf = mandoc_strdup(r->current_string);
3971: buf->sz = strlen(buf->buf) + 1;
1.248 schwarze 3972: *offs = 0;
1.106 kristaps 3973:
1.365 schwarze 3974: return buf->buf[buf->sz - 2] == '\n' ?
1.340 schwarze 3975: ROFF_REPARSE | ROFF_USERCALL : ROFF_IGN | ROFF_APPEND;
1.99 kristaps 3976: }
1.121 schwarze 3977:
1.306 schwarze 3978: /*
3979: * Calling a high-level macro that was renamed with .rn.
3980: * r->current_string has already been set up by roff_parse().
3981: */
1.340 schwarze 3982: static int
1.306 schwarze 3983: roff_renamed(ROFF_ARGS)
3984: {
3985: char *nbuf;
3986:
1.315 schwarze 3987: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
3988: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.306 schwarze 3989: free(buf->buf);
3990: buf->buf = nbuf;
1.329 schwarze 3991: *offs = 0;
1.306 schwarze 3992: return ROFF_CONT;
3993: }
3994:
1.362 schwarze 3995: /*
3996: * Measure the length in bytes of the roff identifier at *cpp
3997: * and advance the pointer to the next word.
3998: */
1.212 schwarze 3999: static size_t
1.121 schwarze 4000: roff_getname(struct roff *r, char **cpp, int ln, int pos)
4001: {
4002: char *name, *cp;
1.212 schwarze 4003: size_t namesz;
1.121 schwarze 4004:
4005: name = *cpp;
1.362 schwarze 4006: if (*name == '\0')
1.277 schwarze 4007: return 0;
1.121 schwarze 4008:
1.362 schwarze 4009: /* Advance cp to the byte after the end of the name. */
4010:
1.212 schwarze 4011: for (cp = name; 1; cp++) {
1.362 schwarze 4012: namesz = cp - name;
1.363 schwarze 4013: if (*cp == '\0')
1.212 schwarze 4014: break;
1.363 schwarze 4015: if (*cp == ' ' || *cp == '\t') {
4016: cp++;
4017: break;
4018: }
1.362 schwarze 4019: if (*cp != '\\')
1.121 schwarze 4020: continue;
1.362 schwarze 4021: if (cp[1] == '{' || cp[1] == '}')
1.215 schwarze 4022: break;
1.362 schwarze 4023: if (*++cp == '\\')
1.121 schwarze 4024: continue;
1.350 schwarze 4025: mandoc_msg(MANDOCERR_NAMESC, ln, pos,
1.224 schwarze 4026: "%.*s", (int)(cp - name + 1), name);
1.212 schwarze 4027: mandoc_escape((const char **)&cp, NULL, NULL);
4028: break;
1.121 schwarze 4029: }
4030:
4031: /* Read past spaces. */
1.362 schwarze 4032:
4033: while (*cp == ' ')
1.121 schwarze 4034: cp++;
4035:
4036: *cpp = cp;
1.277 schwarze 4037: return namesz;
1.121 schwarze 4038: }
4039:
1.106 kristaps 4040: /*
4041: * Store *string into the user-defined string called *name.
4042: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.193 schwarze 4043: * append == 0: replace mode
4044: * append == 1: single-line append mode
4045: * append == 2: multiline append mode, append '\n' after each call
1.106 kristaps 4046: */
1.94 kristaps 4047: static void
1.106 kristaps 4048: roff_setstr(struct roff *r, const char *name, const char *string,
1.193 schwarze 4049: int append)
1.92 schwarze 4050: {
1.315 schwarze 4051: size_t namesz;
1.164 kristaps 4052:
1.315 schwarze 4053: namesz = strlen(name);
4054: roff_setstrn(&r->strtab, name, namesz, string,
1.207 schwarze 4055: string ? strlen(string) : 0, append);
1.315 schwarze 4056: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.164 kristaps 4057: }
4058:
4059: static void
1.166 kristaps 4060: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.193 schwarze 4061: const char *string, size_t stringsz, int append)
1.164 kristaps 4062: {
1.166 kristaps 4063: struct roffkv *n;
1.164 kristaps 4064: char *c;
4065: int i;
4066: size_t oldch, newch;
1.92 schwarze 4067:
1.106 kristaps 4068: /* Search for an existing string with the same name. */
1.164 kristaps 4069: n = *r;
4070:
1.211 schwarze 4071: while (n && (namesz != n->key.sz ||
4072: strncmp(n->key.p, name, namesz)))
1.92 schwarze 4073: n = n->next;
1.94 kristaps 4074:
4075: if (NULL == n) {
1.106 kristaps 4076: /* Create a new string table entry. */
1.166 kristaps 4077: n = mandoc_malloc(sizeof(struct roffkv));
4078: n->key.p = mandoc_strndup(name, namesz);
4079: n->key.sz = namesz;
4080: n->val.p = NULL;
4081: n->val.sz = 0;
1.164 kristaps 4082: n->next = *r;
4083: *r = n;
1.193 schwarze 4084: } else if (0 == append) {
1.166 kristaps 4085: free(n->val.p);
4086: n->val.p = NULL;
4087: n->val.sz = 0;
1.106 kristaps 4088: }
4089:
4090: if (NULL == string)
4091: return;
4092:
4093: /*
4094: * One additional byte for the '\n' in multiline mode,
4095: * and one for the terminating '\0'.
4096: */
1.193 schwarze 4097: newch = stringsz + (1 < append ? 2u : 1u);
1.164 kristaps 4098:
1.166 kristaps 4099: if (NULL == n->val.p) {
4100: n->val.p = mandoc_malloc(newch);
4101: *n->val.p = '\0';
1.106 kristaps 4102: oldch = 0;
4103: } else {
1.166 kristaps 4104: oldch = n->val.sz;
4105: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.106 kristaps 4106: }
4107:
4108: /* Skip existing content in the destination buffer. */
1.166 kristaps 4109: c = n->val.p + (int)oldch;
1.106 kristaps 4110:
4111: /* Append new content to the destination buffer. */
1.164 kristaps 4112: i = 0;
4113: while (i < (int)stringsz) {
1.106 kristaps 4114: /*
4115: * Rudimentary roff copy mode:
4116: * Handle escaped backslashes.
4117: */
1.164 kristaps 4118: if ('\\' == string[i] && '\\' == string[i + 1])
4119: i++;
4120: *c++ = string[i++];
1.106 kristaps 4121: }
1.94 kristaps 4122:
1.106 kristaps 4123: /* Append terminating bytes. */
1.193 schwarze 4124: if (1 < append)
1.106 kristaps 4125: *c++ = '\n';
1.163 kristaps 4126:
1.106 kristaps 4127: *c = '\0';
1.166 kristaps 4128: n->val.sz = (int)(c - n->val.p);
1.92 schwarze 4129: }
4130:
1.94 kristaps 4131: static const char *
1.325 schwarze 4132: roff_getstrn(struct roff *r, const char *name, size_t len,
1.315 schwarze 4133: int *deftype)
1.92 schwarze 4134: {
1.315 schwarze 4135: const struct roffkv *n;
1.325 schwarze 4136: int found, i;
1.315 schwarze 4137: enum roff_tok tok;
4138:
1.325 schwarze 4139: found = 0;
4140: for (n = r->strtab; n != NULL; n = n->next) {
4141: if (strncmp(name, n->key.p, len) != 0 ||
4142: n->key.p[len] != '\0' || n->val.p == NULL)
4143: continue;
4144: if (*deftype & ROFFDEF_USER) {
4145: *deftype = ROFFDEF_USER;
4146: return n->val.p;
4147: } else {
4148: found = 1;
4149: break;
4150: }
4151: }
4152: for (n = r->rentab; n != NULL; n = n->next) {
4153: if (strncmp(name, n->key.p, len) != 0 ||
4154: n->key.p[len] != '\0' || n->val.p == NULL)
4155: continue;
4156: if (*deftype & ROFFDEF_REN) {
4157: *deftype = ROFFDEF_REN;
4158: return n->val.p;
4159: } else {
4160: found = 1;
4161: break;
1.315 schwarze 4162: }
4163: }
1.325 schwarze 4164: for (i = 0; i < PREDEFS_MAX; i++) {
4165: if (strncmp(name, predefs[i].name, len) != 0 ||
4166: predefs[i].name[len] != '\0')
4167: continue;
4168: if (*deftype & ROFFDEF_PRE) {
4169: *deftype = ROFFDEF_PRE;
4170: return predefs[i].str;
4171: } else {
4172: found = 1;
4173: break;
1.315 schwarze 4174: }
4175: }
1.356 schwarze 4176: if (r->man->meta.macroset != MACROSET_MAN) {
1.325 schwarze 4177: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
4178: if (strncmp(name, roff_name[tok], len) != 0 ||
4179: roff_name[tok][len] != '\0')
4180: continue;
4181: if (*deftype & ROFFDEF_STD) {
4182: *deftype = ROFFDEF_STD;
4183: return NULL;
4184: } else {
4185: found = 1;
4186: break;
1.315 schwarze 4187: }
4188: }
4189: }
1.356 schwarze 4190: if (r->man->meta.macroset != MACROSET_MDOC) {
1.325 schwarze 4191: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
4192: if (strncmp(name, roff_name[tok], len) != 0 ||
4193: roff_name[tok][len] != '\0')
4194: continue;
4195: if (*deftype & ROFFDEF_STD) {
4196: *deftype = ROFFDEF_STD;
4197: return NULL;
4198: } else {
4199: found = 1;
4200: break;
1.315 schwarze 4201: }
4202: }
1.325 schwarze 4203: }
4204:
4205: if (found == 0 && *deftype != ROFFDEF_ANY) {
4206: if (*deftype & ROFFDEF_REN) {
4207: /*
4208: * This might still be a request,
4209: * so do not treat it as undefined yet.
4210: */
4211: *deftype = ROFFDEF_UNDEF;
4212: return NULL;
1.315 schwarze 4213: }
1.325 schwarze 4214:
4215: /* Using an undefined string defines it to be empty. */
4216:
4217: roff_setstrn(&r->strtab, name, len, "", 0, 0);
4218: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.315 schwarze 4219: }
1.325 schwarze 4220:
1.315 schwarze 4221: *deftype = 0;
1.277 schwarze 4222: return NULL;
1.92 schwarze 4223: }
4224:
1.94 kristaps 4225: static void
1.167 kristaps 4226: roff_freestr(struct roffkv *r)
1.92 schwarze 4227: {
1.166 kristaps 4228: struct roffkv *n, *nn;
1.92 schwarze 4229:
1.167 kristaps 4230: for (n = r; n; n = nn) {
1.166 kristaps 4231: free(n->key.p);
4232: free(n->val.p);
1.92 schwarze 4233: nn = n->next;
4234: free(n);
4235: }
1.114 kristaps 4236: }
1.266 schwarze 4237:
4238: /* --- accessors and utility functions ------------------------------------ */
1.164 kristaps 4239:
4240: /*
4241: * Duplicate an input string, making the appropriate character
4242: * conversations (as stipulated by `tr') along the way.
4243: * Returns a heap-allocated string with all the replacements made.
4244: */
4245: char *
4246: roff_strdup(const struct roff *r, const char *p)
4247: {
1.166 kristaps 4248: const struct roffkv *cp;
1.164 kristaps 4249: char *res;
4250: const char *pp;
4251: size_t ssz, sz;
4252: enum mandoc_esc esc;
4253:
1.167 kristaps 4254: if (NULL == r->xmbtab && NULL == r->xtab)
1.277 schwarze 4255: return mandoc_strdup(p);
1.164 kristaps 4256: else if ('\0' == *p)
1.277 schwarze 4257: return mandoc_strdup("");
1.164 kristaps 4258:
4259: /*
4260: * Step through each character looking for term matches
4261: * (remember that a `tr' can be invoked with an escape, which is
4262: * a glyph but the escape is multi-character).
4263: * We only do this if the character hash has been initialised
4264: * and the string is >0 length.
4265: */
4266:
4267: res = NULL;
4268: ssz = 0;
4269:
4270: while ('\0' != *p) {
1.289 schwarze 4271: assert((unsigned int)*p < 128);
4272: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.167 kristaps 4273: sz = r->xtab[(int)*p].sz;
4274: res = mandoc_realloc(res, ssz + sz + 1);
4275: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
4276: ssz += sz;
4277: p++;
4278: continue;
4279: } else if ('\\' != *p) {
4280: res = mandoc_realloc(res, ssz + 2);
4281: res[ssz++] = *p++;
4282: continue;
4283: }
4284:
1.164 kristaps 4285: /* Search for term matches. */
1.167 kristaps 4286: for (cp = r->xmbtab; cp; cp = cp->next)
1.166 kristaps 4287: if (0 == strncmp(p, cp->key.p, cp->key.sz))
1.164 kristaps 4288: break;
4289:
4290: if (NULL != cp) {
4291: /*
4292: * A match has been found.
4293: * Append the match to the array and move
4294: * forward by its keysize.
4295: */
1.207 schwarze 4296: res = mandoc_realloc(res,
4297: ssz + cp->val.sz + 1);
1.166 kristaps 4298: memcpy(res + ssz, cp->val.p, cp->val.sz);
4299: ssz += cp->val.sz;
4300: p += (int)cp->key.sz;
1.164 kristaps 4301: continue;
4302: }
4303:
1.167 kristaps 4304: /*
4305: * Handle escapes carefully: we need to copy
4306: * over just the escape itself, or else we might
4307: * do replacements within the escape itself.
4308: * Make sure to pass along the bogus string.
4309: */
4310: pp = p++;
4311: esc = mandoc_escape(&p, NULL, NULL);
4312: if (ESCAPE_ERROR == esc) {
4313: sz = strlen(pp);
1.164 kristaps 4314: res = mandoc_realloc(res, ssz + sz + 1);
4315: memcpy(res + ssz, pp, sz);
1.167 kristaps 4316: break;
1.164 kristaps 4317: }
1.207 schwarze 4318: /*
4319: * We bail out on bad escapes.
1.167 kristaps 4320: * No need to warn: we already did so when
1.355 schwarze 4321: * roff_expand() was called.
1.167 kristaps 4322: */
4323: sz = (int)(p - pp);
4324: res = mandoc_realloc(res, ssz + sz + 1);
4325: memcpy(res + ssz, pp, sz);
4326: ssz += sz;
1.164 kristaps 4327: }
4328:
4329: res[(int)ssz] = '\0';
1.277 schwarze 4330: return res;
1.227 schwarze 4331: }
4332:
4333: int
4334: roff_getformat(const struct roff *r)
4335: {
4336:
1.277 schwarze 4337: return r->format;
1.174 kristaps 4338: }
4339:
4340: /*
1.207 schwarze 4341: * Find out whether a line is a macro line or not.
1.174 kristaps 4342: * If it is, adjust the current position and return one; if it isn't,
4343: * return zero and don't change the current position.
4344: * If the control character has been set with `.cc', then let that grain
4345: * precedence.
4346: * This is slighly contrary to groff, where using the non-breaking
4347: * control character when `cc' has been invoked will cause the
4348: * non-breaking macro contents to be printed verbatim.
4349: */
4350: int
4351: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
4352: {
4353: int pos;
4354:
4355: pos = *ppos;
4356:
1.303 schwarze 4357: if (r->control != '\0' && cp[pos] == r->control)
1.174 kristaps 4358: pos++;
1.303 schwarze 4359: else if (r->control != '\0')
1.277 schwarze 4360: return 0;
1.174 kristaps 4361: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
4362: pos += 2;
4363: else if ('.' == cp[pos] || '\'' == cp[pos])
4364: pos++;
4365: else
1.277 schwarze 4366: return 0;
1.174 kristaps 4367:
4368: while (' ' == cp[pos] || '\t' == cp[pos])
4369: pos++;
4370:
4371: *ppos = pos;
1.277 schwarze 4372: return 1;
1.74 kristaps 4373: }
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