Annotation of src/usr.bin/mandoc/roff.c, Revision 1.230
1.230 ! schwarze 1: /* $OpenBSD: roff.c,v 1.229 2018/12/31 04:55:42 schwarze Exp $ */
1.1 schwarze 2: /*
1.139 schwarze 3: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.197 schwarze 4: * Copyright (c) 2010-2015, 2017, 2018 Ingo Schwarze <schwarze@openbsd.org>
1.1 schwarze 5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
1.16 schwarze 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.1 schwarze 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.16 schwarze 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.1 schwarze 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.
17: */
1.99 schwarze 18: #include <sys/types.h>
19:
1.1 schwarze 20: #include <assert.h>
1.3 schwarze 21: #include <ctype.h>
1.117 schwarze 22: #include <limits.h>
1.167 schwarze 23: #include <stddef.h>
24: #include <stdint.h>
1.51 schwarze 25: #include <stdio.h>
1.1 schwarze 26: #include <stdlib.h>
27: #include <string.h>
28:
1.74 schwarze 29: #include "mandoc_aux.h"
1.167 schwarze 30: #include "mandoc_ohash.h"
1.217 schwarze 31: #include "mandoc.h"
1.137 schwarze 32: #include "roff.h"
1.221 schwarze 33: #include "mandoc_parse.h"
1.98 daniel 34: #include "libmandoc.h"
1.138 schwarze 35: #include "roff_int.h"
1.218 schwarze 36: #include "tbl_parse.h"
1.219 schwarze 37: #include "eqn_parse.h"
1.2 schwarze 38:
1.227 schwarze 39: /*
40: * ASCII_ESC is used to signal from roff_getarg() to roff_expand()
41: * that an escape sequence resulted from copy-in processing and
42: * needs to be checked or interpolated. As it is used nowhere
43: * else, it is defined here rather than in a header file.
44: */
45: #define ASCII_ESC 27
46:
1.43 schwarze 47: /* Maximum number of string expansions per line, to break infinite loops. */
48: #define EXPAND_LIMIT 1000
49:
1.187 schwarze 50: /* Types of definitions of macros and strings. */
51: #define ROFFDEF_USER (1 << 1) /* User-defined. */
52: #define ROFFDEF_PRE (1 << 2) /* Predefined. */
53: #define ROFFDEF_REN (1 << 3) /* Renamed standard macro. */
54: #define ROFFDEF_STD (1 << 4) /* mdoc(7) or man(7) macro. */
55: #define ROFFDEF_ANY (ROFFDEF_USER | ROFFDEF_PRE | \
56: ROFFDEF_REN | ROFFDEF_STD)
1.197 schwarze 57: #define ROFFDEF_UNDEF (1 << 5) /* Completely undefined. */
1.187 schwarze 58:
1.138 schwarze 59: /* --- data types --------------------------------------------------------- */
60:
1.41 schwarze 61: /*
1.42 schwarze 62: * An incredibly-simple string buffer.
63: */
1.8 schwarze 64: struct roffstr {
1.42 schwarze 65: char *p; /* nil-terminated buffer */
66: size_t sz; /* saved strlen(p) */
67: };
68:
69: /*
70: * A key-value roffstr pair as part of a singly-linked list.
71: */
72: struct roffkv {
73: struct roffstr key;
74: struct roffstr val;
75: struct roffkv *next; /* next in list */
1.8 schwarze 76: };
77:
1.52 schwarze 78: /*
79: * A single number register as part of a singly-linked list.
80: */
81: struct roffreg {
82: struct roffstr key;
1.53 schwarze 83: int val;
1.199 schwarze 84: int step;
1.52 schwarze 85: struct roffreg *next;
86: };
87:
1.167 schwarze 88: /*
89: * Association of request and macro names with token IDs.
90: */
91: struct roffreq {
92: enum roff_tok tok;
93: char name[];
94: };
95:
1.211 schwarze 96: /*
97: * A macro processing context.
98: * More than one is needed when macro calls are nested.
99: */
100: struct mctx {
101: char **argv;
102: int argc;
103: int argsz;
104: };
105:
1.1 schwarze 106: struct roff {
1.168 schwarze 107: struct roff_man *man; /* mdoc or man parser */
1.1 schwarze 108: struct roffnode *last; /* leaf of stack */
1.211 schwarze 109: struct mctx *mstack; /* stack of macro contexts */
1.96 schwarze 110: int *rstack; /* stack of inverted `ie' values */
1.167 schwarze 111: struct ohash *reqtab; /* request lookup table */
1.52 schwarze 112: struct roffreg *regtab; /* number registers */
1.42 schwarze 113: struct roffkv *strtab; /* user-defined strings & macros */
1.178 schwarze 114: struct roffkv *rentab; /* renamed strings & macros */
1.42 schwarze 115: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
116: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.16 schwarze 117: const char *current_string; /* value of last called user macro */
1.27 schwarze 118: struct tbl_node *first_tbl; /* first table parsed */
119: struct tbl_node *last_tbl; /* last table parsed */
120: struct tbl_node *tbl; /* current table being parsed */
1.191 schwarze 121: struct eqn_node *last_eqn; /* equation parser */
122: struct eqn_node *eqn; /* active equation parser */
1.102 schwarze 123: int eqn_inline; /* current equation is inline */
1.96 schwarze 124: int options; /* parse options */
1.211 schwarze 125: int mstacksz; /* current size of mstack */
126: int mstackpos; /* position in mstack */
1.96 schwarze 127: int rstacksz; /* current size limit of rstack */
128: int rstackpos; /* position in rstack */
1.99 schwarze 129: int format; /* current file in mdoc or man format */
1.96 schwarze 130: char control; /* control character */
1.175 schwarze 131: char escape; /* escape character */
1.1 schwarze 132: };
133:
134: struct roffnode {
1.166 schwarze 135: enum roff_tok tok; /* type of node */
1.1 schwarze 136: struct roffnode *parent; /* up one in stack */
137: int line; /* parse line */
138: int col; /* parse col */
1.16 schwarze 139: char *name; /* node name, e.g. macro name */
1.2 schwarze 140: char *end; /* end-rules: custom token */
141: int endspan; /* end-rules: next-line or infty */
1.71 schwarze 142: int rule; /* current evaluation rule */
1.1 schwarze 143: };
144:
145: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.166 schwarze 146: enum roff_tok tok, /* tok of macro */ \
1.110 schwarze 147: struct buf *buf, /* input buffer */ \
1.1 schwarze 148: int ln, /* parse line */ \
1.2 schwarze 149: int ppos, /* original pos in buffer */ \
150: int pos, /* current pos in buffer */ \
151: int *offs /* reset offset of buffer data */
1.1 schwarze 152:
1.212 schwarze 153: typedef int (*roffproc)(ROFF_ARGS);
1.1 schwarze 154:
155: struct roffmac {
1.2 schwarze 156: roffproc proc; /* process new macro */
157: roffproc text; /* process as child text of macro */
158: roffproc sub; /* process as child of macro */
159: int flags;
160: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.1 schwarze 161: };
162:
1.37 schwarze 163: struct predef {
164: const char *name; /* predefined input name */
165: const char *str; /* replacement symbol */
166: };
167:
168: #define PREDEF(__name, __str) \
169: { (__name), (__str) },
170:
1.138 schwarze 171: /* --- function prototypes ------------------------------------------------ */
172:
1.212 schwarze 173: static int roffnode_cleanscope(struct roff *);
174: static int roffnode_pop(struct roff *);
1.166 schwarze 175: static void roffnode_push(struct roff *, enum roff_tok,
1.42 schwarze 176: const char *, int, int);
1.218 schwarze 177: static void roff_addtbl(struct roff_man *, int, struct tbl_node *);
1.212 schwarze 178: static int roff_als(ROFF_ARGS);
179: static int roff_block(ROFF_ARGS);
180: static int roff_block_text(ROFF_ARGS);
181: static int roff_block_sub(ROFF_ARGS);
182: static int roff_cblock(ROFF_ARGS);
183: static int roff_cc(ROFF_ARGS);
184: static int roff_ccond(struct roff *, int, int);
1.213 schwarze 185: static int roff_char(ROFF_ARGS);
1.212 schwarze 186: static int roff_cond(ROFF_ARGS);
187: static int roff_cond_text(ROFF_ARGS);
188: static int roff_cond_sub(ROFF_ARGS);
189: static int roff_ds(ROFF_ARGS);
190: static int roff_ec(ROFF_ARGS);
191: static int roff_eo(ROFF_ARGS);
192: static int roff_eqndelim(struct roff *, struct buf *, int);
1.143 schwarze 193: static int roff_evalcond(struct roff *r, int, char *, int *);
1.106 schwarze 194: static int roff_evalnum(struct roff *, int,
195: const char *, int *, int *, int);
196: static int roff_evalpar(struct roff *, int,
1.133 schwarze 197: const char *, int *, int *, int);
1.71 schwarze 198: static int roff_evalstrcond(const char *, int *);
1.227 schwarze 199: static int roff_expand(struct roff *, struct buf *,
200: int, int, char);
1.42 schwarze 201: static void roff_free1(struct roff *);
1.52 schwarze 202: static void roff_freereg(struct roffreg *);
1.42 schwarze 203: static void roff_freestr(struct roffkv *);
1.85 schwarze 204: static size_t roff_getname(struct roff *, char **, int, int);
1.133 schwarze 205: static int roff_getnum(const char *, int *, int *, int);
1.56 schwarze 206: static int roff_getop(const char *, int *, char *);
1.199 schwarze 207: static int roff_getregn(struct roff *,
208: const char *, size_t, char);
1.145 schwarze 209: static int roff_getregro(const struct roff *,
210: const char *name);
1.197 schwarze 211: static const char *roff_getstrn(struct roff *,
1.187 schwarze 212: const char *, size_t, int *);
1.143 schwarze 213: static int roff_hasregn(const struct roff *,
214: const char *, size_t);
1.212 schwarze 215: static int roff_insec(ROFF_ARGS);
216: static int roff_it(ROFF_ARGS);
217: static int roff_line_ignore(ROFF_ARGS);
1.137 schwarze 218: static void roff_man_alloc1(struct roff_man *);
219: static void roff_man_free1(struct roff_man *);
1.212 schwarze 220: static int roff_manyarg(ROFF_ARGS);
1.230 ! schwarze 221: static int roff_noarg(ROFF_ARGS);
1.212 schwarze 222: static int roff_nop(ROFF_ARGS);
223: static int roff_nr(ROFF_ARGS);
224: static int roff_onearg(ROFF_ARGS);
1.166 schwarze 225: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.87 schwarze 226: int, int);
1.212 schwarze 227: static int roff_parsetext(struct roff *, struct buf *,
1.177 schwarze 228: int, int *);
1.212 schwarze 229: static int roff_renamed(ROFF_ARGS);
230: static int roff_return(ROFF_ARGS);
231: static int roff_rm(ROFF_ARGS);
232: static int roff_rn(ROFF_ARGS);
233: static int roff_rr(ROFF_ARGS);
1.198 schwarze 234: static void roff_setregn(struct roff *, const char *,
1.199 schwarze 235: size_t, int, char, int);
1.8 schwarze 236: static void roff_setstr(struct roff *,
1.16 schwarze 237: const char *, const char *, int);
1.80 schwarze 238: static void roff_setstrn(struct roffkv **, const char *,
1.42 schwarze 239: size_t, const char *, size_t, int);
1.212 schwarze 240: static int roff_shift(ROFF_ARGS);
241: static int roff_so(ROFF_ARGS);
242: static int roff_tr(ROFF_ARGS);
243: static int roff_Dd(ROFF_ARGS);
244: static int roff_TE(ROFF_ARGS);
245: static int roff_TS(ROFF_ARGS);
246: static int roff_EQ(ROFF_ARGS);
247: static int roff_EN(ROFF_ARGS);
248: static int roff_T_(ROFF_ARGS);
249: static int roff_unsupp(ROFF_ARGS);
250: static int roff_userdef(ROFF_ARGS);
1.1 schwarze 251:
1.138 schwarze 252: /* --- constant data ------------------------------------------------------ */
253:
1.133 schwarze 254: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
255: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
256:
1.166 schwarze 257: const char *__roff_name[MAN_MAX + 1] = {
1.230 ! schwarze 258: "br", "ce", "fi", "ft",
! 259: "ll", "mc", "nf",
! 260: "po", "rj", "sp",
1.184 schwarze 261: "ta", "ti", NULL,
1.166 schwarze 262: "ab", "ad", "af", "aln",
263: "als", "am", "am1", "ami",
264: "ami1", "as", "as1", "asciify",
265: "backtrace", "bd", "bleedat", "blm",
266: "box", "boxa", "bp", "BP",
267: "break", "breakchar", "brnl", "brp",
1.177 schwarze 268: "brpnl", "c2", "cc",
1.166 schwarze 269: "cf", "cflags", "ch", "char",
270: "chop", "class", "close", "CL",
271: "color", "composite", "continue", "cp",
272: "cropat", "cs", "cu", "da",
273: "dch", "Dd", "de", "de1",
274: "defcolor", "dei", "dei1", "device",
275: "devicem", "di", "do", "ds",
276: "ds1", "dwh", "dt", "ec",
277: "ecr", "ecs", "el", "em",
278: "EN", "eo", "EP", "EQ",
279: "errprint", "ev", "evc", "ex",
280: "fallback", "fam", "fc", "fchar",
281: "fcolor", "fdeferlig", "feature", "fkern",
282: "fl", "flig", "fp", "fps",
283: "fschar", "fspacewidth", "fspecial", "ftr",
284: "fzoom", "gcolor", "hc", "hcode",
285: "hidechar", "hla", "hlm", "hpf",
286: "hpfa", "hpfcode", "hw", "hy",
287: "hylang", "hylen", "hym", "hypp",
288: "hys", "ie", "if", "ig",
289: "index", "it", "itc", "IX",
290: "kern", "kernafter", "kernbefore", "kernpair",
291: "lc", "lc_ctype", "lds", "length",
292: "letadj", "lf", "lg", "lhang",
293: "linetabs", "lnr", "lnrf", "lpfx",
1.176 schwarze 294: "ls", "lsm", "lt",
1.166 schwarze 295: "mediasize", "minss", "mk", "mso",
296: "na", "ne", "nh", "nhychar",
297: "nm", "nn", "nop", "nr",
298: "nrf", "nroff", "ns", "nx",
299: "open", "opena", "os", "output",
300: "padj", "papersize", "pc", "pev",
301: "pi", "PI", "pl", "pm",
1.184 schwarze 302: "pn", "pnr", "ps",
1.166 schwarze 303: "psbb", "pshape", "pso", "ptr",
304: "pvs", "rchar", "rd", "recursionlimit",
1.181 schwarze 305: "return", "rfschar", "rhang",
1.166 schwarze 306: "rm", "rn", "rnn", "rr",
307: "rs", "rt", "schar", "sentchar",
308: "shc", "shift", "sizes", "so",
309: "spacewidth", "special", "spreadwarn", "ss",
310: "sty", "substring", "sv", "sy",
1.172 schwarze 311: "T&", "tc", "TE",
1.173 schwarze 312: "TH", "tkf", "tl",
1.166 schwarze 313: "tm", "tm1", "tmc", "tr",
314: "track", "transchar", "trf", "trimat",
315: "trin", "trnt", "troff", "TS",
316: "uf", "ul", "unformat", "unwatch",
317: "unwatchn", "vpt", "vs", "warn",
318: "warnscale", "watch", "watchlength", "watchn",
319: "wh", "while", "write", "writec",
320: "writem", "xflag", ".", NULL,
1.178 schwarze 321: NULL, "text",
1.166 schwarze 322: "Dd", "Dt", "Os", "Sh",
323: "Ss", "Pp", "D1", "Dl",
324: "Bd", "Ed", "Bl", "El",
325: "It", "Ad", "An", "Ap",
326: "Ar", "Cd", "Cm", "Dv",
327: "Er", "Ev", "Ex", "Fa",
328: "Fd", "Fl", "Fn", "Ft",
329: "Ic", "In", "Li", "Nd",
330: "Nm", "Op", "Ot", "Pa",
331: "Rv", "St", "Va", "Vt",
332: "Xr", "%A", "%B", "%D",
333: "%I", "%J", "%N", "%O",
334: "%P", "%R", "%T", "%V",
335: "Ac", "Ao", "Aq", "At",
336: "Bc", "Bf", "Bo", "Bq",
337: "Bsx", "Bx", "Db", "Dc",
338: "Do", "Dq", "Ec", "Ef",
339: "Em", "Eo", "Fx", "Ms",
340: "No", "Ns", "Nx", "Ox",
341: "Pc", "Pf", "Po", "Pq",
342: "Qc", "Ql", "Qo", "Qq",
343: "Re", "Rs", "Sc", "So",
344: "Sq", "Sm", "Sx", "Sy",
345: "Tn", "Ux", "Xc", "Xo",
346: "Fo", "Fc", "Oo", "Oc",
347: "Bk", "Ek", "Bt", "Hf",
348: "Fr", "Ud", "Lb", "Lp",
349: "Lk", "Mt", "Brq", "Bro",
350: "Brc", "%C", "Es", "En",
1.171 schwarze 351: "Dx", "%Q", "%U", "Ta",
352: NULL,
1.166 schwarze 353: "TH", "SH", "SS", "TP",
1.204 schwarze 354: "TQ",
1.166 schwarze 355: "LP", "PP", "P", "IP",
356: "HP", "SM", "SB", "BI",
357: "IB", "BR", "RB", "R",
358: "B", "I", "IR", "RI",
359: "RE", "RS", "DT", "UC",
1.169 schwarze 360: "PD", "AT", "in",
1.205 schwarze 361: "SY", "YS", "OP",
362: "EX", "EE", "UR",
1.189 bentley 363: "UE", "MT", "ME", NULL
1.166 schwarze 364: };
365: const char *const *roff_name = __roff_name;
366:
367: static struct roffmac roffs[TOKEN_NONE] = {
1.230 ! schwarze 368: { roff_noarg, NULL, NULL, 0 }, /* br */
1.177 schwarze 369: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.230 ! schwarze 370: { roff_noarg, NULL, NULL, 0 }, /* fi */
1.169 schwarze 371: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.170 schwarze 372: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.176 schwarze 373: { roff_onearg, NULL, NULL, 0 }, /* mc */
1.230 ! schwarze 374: { roff_noarg, NULL, NULL, 0 }, /* nf */
1.184 schwarze 375: { roff_onearg, NULL, NULL, 0 }, /* po */
1.181 schwarze 376: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.171 schwarze 377: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.172 schwarze 378: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.173 schwarze 379: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.168 schwarze 380: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.167 schwarze 381: { roff_unsupp, NULL, NULL, 0 }, /* ab */
382: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
383: { roff_line_ignore, NULL, NULL, 0 }, /* af */
384: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.183 schwarze 385: { roff_als, NULL, NULL, 0 }, /* als */
1.167 schwarze 386: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
387: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
388: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
389: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
390: { roff_ds, NULL, NULL, 0 }, /* as */
391: { roff_ds, NULL, NULL, 0 }, /* as1 */
392: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
393: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
394: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
395: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
396: { roff_unsupp, NULL, NULL, 0 }, /* blm */
397: { roff_unsupp, NULL, NULL, 0 }, /* box */
398: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
399: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
400: { roff_unsupp, NULL, NULL, 0 }, /* BP */
401: { roff_unsupp, NULL, NULL, 0 }, /* break */
402: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
403: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.230 ! schwarze 404: { roff_noarg, NULL, NULL, 0 }, /* brp */
1.167 schwarze 405: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
406: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
407: { roff_cc, NULL, NULL, 0 }, /* cc */
408: { roff_insec, NULL, NULL, 0 }, /* cf */
409: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
410: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
1.213 schwarze 411: { roff_char, NULL, NULL, 0 }, /* char */
1.167 schwarze 412: { roff_unsupp, NULL, NULL, 0 }, /* chop */
413: { roff_line_ignore, NULL, NULL, 0 }, /* class */
414: { roff_insec, NULL, NULL, 0 }, /* close */
415: { roff_unsupp, NULL, NULL, 0 }, /* CL */
416: { roff_line_ignore, NULL, NULL, 0 }, /* color */
417: { roff_unsupp, NULL, NULL, 0 }, /* composite */
418: { roff_unsupp, NULL, NULL, 0 }, /* continue */
419: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
420: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
421: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
422: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
423: { roff_unsupp, NULL, NULL, 0 }, /* da */
424: { roff_unsupp, NULL, NULL, 0 }, /* dch */
425: { roff_Dd, NULL, NULL, 0 }, /* Dd */
426: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
427: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
428: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
429: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
430: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
431: { roff_unsupp, NULL, NULL, 0 }, /* device */
432: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
433: { roff_unsupp, NULL, NULL, 0 }, /* di */
434: { roff_unsupp, NULL, NULL, 0 }, /* do */
435: { roff_ds, NULL, NULL, 0 }, /* ds */
436: { roff_ds, NULL, NULL, 0 }, /* ds1 */
437: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
438: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.175 schwarze 439: { roff_ec, NULL, NULL, 0 }, /* ec */
1.167 schwarze 440: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
441: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
442: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
443: { roff_unsupp, NULL, NULL, 0 }, /* em */
444: { roff_EN, NULL, NULL, 0 }, /* EN */
1.175 schwarze 445: { roff_eo, NULL, NULL, 0 }, /* eo */
1.167 schwarze 446: { roff_unsupp, NULL, NULL, 0 }, /* EP */
447: { roff_EQ, NULL, NULL, 0 }, /* EQ */
448: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
449: { roff_unsupp, NULL, NULL, 0 }, /* ev */
450: { roff_unsupp, NULL, NULL, 0 }, /* evc */
451: { roff_unsupp, NULL, NULL, 0 }, /* ex */
452: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
453: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
454: { roff_unsupp, NULL, NULL, 0 }, /* fc */
455: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
456: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
457: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
458: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
459: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
460: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
461: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
462: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
463: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
464: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
465: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
466: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
467: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
468: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
469: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
470: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
471: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
472: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
473: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
474: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
475: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
476: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
477: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
478: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
479: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
480: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
481: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
482: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
483: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
484: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
485: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
486: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
487: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
488: { roff_unsupp, NULL, NULL, 0 }, /* index */
489: { roff_it, NULL, NULL, 0 }, /* it */
490: { roff_unsupp, NULL, NULL, 0 }, /* itc */
491: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
492: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
493: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
494: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
495: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
496: { roff_unsupp, NULL, NULL, 0 }, /* lc */
497: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
498: { roff_unsupp, NULL, NULL, 0 }, /* lds */
499: { roff_unsupp, NULL, NULL, 0 }, /* length */
500: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
501: { roff_insec, NULL, NULL, 0 }, /* lf */
502: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
503: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
504: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
505: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
506: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
507: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
508: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
509: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
510: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
511: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
512: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
513: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
514: { roff_insec, NULL, NULL, 0 }, /* mso */
515: { roff_line_ignore, NULL, NULL, 0 }, /* na */
516: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
517: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
518: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
519: { roff_unsupp, NULL, NULL, 0 }, /* nm */
520: { roff_unsupp, NULL, NULL, 0 }, /* nn */
1.202 schwarze 521: { roff_nop, NULL, NULL, 0 }, /* nop */
1.167 schwarze 522: { roff_nr, NULL, NULL, 0 }, /* nr */
523: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
524: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
525: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
526: { roff_insec, NULL, NULL, 0 }, /* nx */
527: { roff_insec, NULL, NULL, 0 }, /* open */
528: { roff_insec, NULL, NULL, 0 }, /* opena */
529: { roff_line_ignore, NULL, NULL, 0 }, /* os */
530: { roff_unsupp, NULL, NULL, 0 }, /* output */
531: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
532: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
533: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
534: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
535: { roff_insec, NULL, NULL, 0 }, /* pi */
536: { roff_unsupp, NULL, NULL, 0 }, /* PI */
537: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
538: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
539: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
540: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
541: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
542: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
543: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
544: { roff_insec, NULL, NULL, 0 }, /* pso */
545: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
546: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
547: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
548: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
549: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
1.211 schwarze 550: { roff_return, NULL, NULL, 0 }, /* return */
1.167 schwarze 551: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
552: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
553: { roff_rm, NULL, NULL, 0 }, /* rm */
1.178 schwarze 554: { roff_rn, NULL, NULL, 0 }, /* rn */
1.167 schwarze 555: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
556: { roff_rr, NULL, NULL, 0 }, /* rr */
557: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
558: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
559: { roff_unsupp, NULL, NULL, 0 }, /* schar */
560: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
561: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
1.211 schwarze 562: { roff_shift, NULL, NULL, 0 }, /* shift */
1.167 schwarze 563: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
564: { roff_so, NULL, NULL, 0 }, /* so */
565: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
566: { roff_line_ignore, NULL, NULL, 0 }, /* special */
567: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
568: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
569: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
570: { roff_unsupp, NULL, NULL, 0 }, /* substring */
571: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
572: { roff_insec, NULL, NULL, 0 }, /* sy */
573: { roff_T_, NULL, NULL, 0 }, /* T& */
574: { roff_unsupp, NULL, NULL, 0 }, /* tc */
575: { roff_TE, NULL, NULL, 0 }, /* TE */
1.187 schwarze 576: { roff_Dd, NULL, NULL, 0 }, /* TH */
1.167 schwarze 577: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
578: { roff_unsupp, NULL, NULL, 0 }, /* tl */
579: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
580: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
581: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
582: { roff_tr, NULL, NULL, 0 }, /* tr */
583: { roff_line_ignore, NULL, NULL, 0 }, /* track */
584: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
585: { roff_insec, NULL, NULL, 0 }, /* trf */
586: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
587: { roff_unsupp, NULL, NULL, 0 }, /* trin */
588: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
589: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
590: { roff_TS, NULL, NULL, 0 }, /* TS */
591: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
592: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
593: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
594: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
595: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
596: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
597: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
598: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
599: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
600: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
601: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
602: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
603: { roff_unsupp, NULL, NULL, 0 }, /* wh */
1.212 schwarze 604: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /*while*/
1.167 schwarze 605: { roff_insec, NULL, NULL, 0 }, /* write */
606: { roff_insec, NULL, NULL, 0 }, /* writec */
607: { roff_insec, NULL, NULL, 0 }, /* writem */
608: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
609: { roff_cblock, NULL, NULL, 0 }, /* . */
1.178 schwarze 610: { roff_renamed, NULL, NULL, 0 },
1.167 schwarze 611: { roff_userdef, NULL, NULL, 0 }
1.1 schwarze 612: };
613:
1.37 schwarze 614: /* Array of injected predefined strings. */
615: #define PREDEFS_MAX 38
616: static const struct predef predefs[PREDEFS_MAX] = {
617: #include "predefs.in"
618: };
619:
1.177 schwarze 620: static int roffce_lines; /* number of input lines to center */
621: static struct roff_node *roffce_node; /* active request */
1.51 schwarze 622: static int roffit_lines; /* number of lines to delay */
623: static char *roffit_macro; /* nil-terminated macro line */
624:
1.80 schwarze 625:
1.138 schwarze 626: /* --- request table ------------------------------------------------------ */
627:
1.167 schwarze 628: struct ohash *
629: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.3 schwarze 630: {
1.167 schwarze 631: struct ohash *htab;
632: struct roffreq *req;
633: enum roff_tok tok;
634: size_t sz;
635: unsigned int slot;
1.3 schwarze 636:
1.167 schwarze 637: htab = mandoc_malloc(sizeof(*htab));
638: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.3 schwarze 639:
1.167 schwarze 640: for (tok = mintok; tok < maxtok; tok++) {
1.168 schwarze 641: if (roff_name[tok] == NULL)
642: continue;
1.167 schwarze 643: sz = strlen(roff_name[tok]);
644: req = mandoc_malloc(sizeof(*req) + sz + 1);
645: req->tok = tok;
646: memcpy(req->name, roff_name[tok], sz + 1);
647: slot = ohash_qlookup(htab, req->name);
648: ohash_insert(htab, slot, req);
1.3 schwarze 649: }
1.167 schwarze 650: return htab;
1.3 schwarze 651: }
652:
1.167 schwarze 653: void
654: roffhash_free(struct ohash *htab)
1.1 schwarze 655: {
1.167 schwarze 656: struct roffreq *req;
657: unsigned int slot;
1.1 schwarze 658:
1.167 schwarze 659: if (htab == NULL)
660: return;
661: for (req = ohash_first(htab, &slot); req != NULL;
662: req = ohash_next(htab, &slot))
663: free(req);
664: ohash_delete(htab);
665: free(htab);
666: }
667:
668: enum roff_tok
669: roffhash_find(struct ohash *htab, const char *name, size_t sz)
670: {
671: struct roffreq *req;
672: const char *end;
673:
674: if (sz) {
675: end = name + sz;
676: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
677: } else
678: req = ohash_find(htab, ohash_qlookup(htab, name));
679: return req == NULL ? TOKEN_NONE : req->tok;
1.1 schwarze 680: }
681:
1.138 schwarze 682: /* --- stack of request blocks -------------------------------------------- */
683:
1.1 schwarze 684: /*
685: * Pop the current node off of the stack of roff instructions currently
686: * pending.
687: */
1.212 schwarze 688: static int
1.1 schwarze 689: roffnode_pop(struct roff *r)
690: {
691: struct roffnode *p;
1.212 schwarze 692: int inloop;
1.1 schwarze 693:
1.80 schwarze 694: p = r->last;
1.212 schwarze 695: inloop = p->tok == ROFF_while;
696: r->last = p->parent;
1.16 schwarze 697: free(p->name);
698: free(p->end);
1.1 schwarze 699: free(p);
1.212 schwarze 700: return inloop;
1.1 schwarze 701: }
702:
703: /*
704: * Push a roff node onto the instruction stack. This must later be
705: * removed with roffnode_pop().
706: */
1.11 schwarze 707: static void
1.166 schwarze 708: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.16 schwarze 709: int line, int col)
1.1 schwarze 710: {
711: struct roffnode *p;
712:
1.11 schwarze 713: p = mandoc_calloc(1, sizeof(struct roffnode));
1.1 schwarze 714: p->tok = tok;
1.16 schwarze 715: if (name)
716: p->name = mandoc_strdup(name);
1.1 schwarze 717: p->parent = r->last;
718: p->line = line;
719: p->col = col;
1.71 schwarze 720: p->rule = p->parent ? p->parent->rule : 0;
1.1 schwarze 721:
722: r->last = p;
723: }
724:
1.138 schwarze 725: /* --- roff parser state data management ---------------------------------- */
726:
1.1 schwarze 727: static void
728: roff_free1(struct roff *r)
729: {
1.42 schwarze 730: int i;
1.27 schwarze 731:
1.218 schwarze 732: tbl_free(r->first_tbl);
1.27 schwarze 733: r->first_tbl = r->last_tbl = r->tbl = NULL;
1.1 schwarze 734:
1.219 schwarze 735: eqn_free(r->last_eqn);
1.191 schwarze 736: r->last_eqn = r->eqn = NULL;
1.32 schwarze 737:
1.211 schwarze 738: while (r->mstackpos >= 0)
739: roff_userret(r);
740:
1.1 schwarze 741: while (r->last)
742: roffnode_pop(r);
1.27 schwarze 743:
1.96 schwarze 744: free (r->rstack);
745: r->rstack = NULL;
746: r->rstacksz = 0;
747: r->rstackpos = -1;
748:
749: roff_freereg(r->regtab);
750: r->regtab = NULL;
751:
1.42 schwarze 752: roff_freestr(r->strtab);
1.178 schwarze 753: roff_freestr(r->rentab);
1.42 schwarze 754: roff_freestr(r->xmbtab);
1.178 schwarze 755: r->strtab = r->rentab = r->xmbtab = NULL;
1.42 schwarze 756:
757: if (r->xtab)
758: for (i = 0; i < 128; i++)
759: free(r->xtab[i].p);
760: free(r->xtab);
761: r->xtab = NULL;
1.1 schwarze 762: }
763:
764: void
765: roff_reset(struct roff *r)
766: {
767: roff_free1(r);
1.99 schwarze 768: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.175 schwarze 769: r->control = '\0';
770: r->escape = '\\';
1.179 schwarze 771: roffce_lines = 0;
772: roffce_node = NULL;
773: roffit_lines = 0;
774: roffit_macro = NULL;
1.1 schwarze 775: }
776:
777: void
778: roff_free(struct roff *r)
779: {
1.211 schwarze 780: int i;
781:
1.1 schwarze 782: roff_free1(r);
1.211 schwarze 783: for (i = 0; i < r->mstacksz; i++)
784: free(r->mstack[i].argv);
785: free(r->mstack);
1.167 schwarze 786: roffhash_free(r->reqtab);
1.1 schwarze 787: free(r);
788: }
789:
790: struct roff *
1.223 schwarze 791: roff_alloc(int options)
1.1 schwarze 792: {
793: struct roff *r;
794:
1.11 schwarze 795: r = mandoc_calloc(1, sizeof(struct roff));
1.200 schwarze 796: r->reqtab = roffhash_alloc(0, ROFF_RENAMED);
1.72 schwarze 797: r->options = options;
1.99 schwarze 798: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.211 schwarze 799: r->mstackpos = -1;
1.2 schwarze 800: r->rstackpos = -1;
1.175 schwarze 801: r->escape = '\\';
1.149 schwarze 802: return r;
1.137 schwarze 803: }
804:
1.138 schwarze 805: /* --- syntax tree state data management ---------------------------------- */
806:
1.137 schwarze 807: static void
808: roff_man_free1(struct roff_man *man)
809: {
1.228 schwarze 810: if (man->meta.first != NULL)
811: roff_node_delete(man, man->meta.first);
1.137 schwarze 812: free(man->meta.msec);
813: free(man->meta.vol);
814: free(man->meta.os);
815: free(man->meta.arch);
816: free(man->meta.title);
817: free(man->meta.name);
818: free(man->meta.date);
1.228 schwarze 819: free(man->meta.sodest);
1.137 schwarze 820: }
821:
1.229 schwarze 822: void
823: roff_state_reset(struct roff_man *man)
824: {
825: man->last = man->meta.first;
826: man->last_es = NULL;
827: man->flags = 0;
828: man->lastsec = man->lastnamed = SEC_NONE;
829: man->next = ROFF_NEXT_CHILD;
830: roff_setreg(man->roff, "nS", 0, '=');
831: }
832:
1.137 schwarze 833: static void
834: roff_man_alloc1(struct roff_man *man)
835: {
836: memset(&man->meta, 0, sizeof(man->meta));
1.228 schwarze 837: man->meta.first = mandoc_calloc(1, sizeof(*man->meta.first));
838: man->meta.first->type = ROFFT_ROOT;
839: man->meta.macroset = MACROSET_NONE;
1.229 schwarze 840: roff_state_reset(man);
1.137 schwarze 841: }
842:
843: void
844: roff_man_reset(struct roff_man *man)
845: {
846: roff_man_free1(man);
847: roff_man_alloc1(man);
848: }
849:
850: void
851: roff_man_free(struct roff_man *man)
852: {
853: roff_man_free1(man);
854: free(man);
855: }
856:
857: struct roff_man *
1.223 schwarze 858: roff_man_alloc(struct roff *roff, const char *os_s, int quick)
1.137 schwarze 859: {
860: struct roff_man *man;
861:
862: man = mandoc_calloc(1, sizeof(*man));
863: man->roff = roff;
1.188 schwarze 864: man->os_s = os_s;
1.137 schwarze 865: man->quick = quick;
866: roff_man_alloc1(man);
1.168 schwarze 867: roff->man = man;
1.149 schwarze 868: return man;
1.1 schwarze 869: }
870:
1.138 schwarze 871: /* --- syntax tree handling ----------------------------------------------- */
872:
873: struct roff_node *
874: roff_node_alloc(struct roff_man *man, int line, int pos,
875: enum roff_type type, int tok)
876: {
877: struct roff_node *n;
878:
879: n = mandoc_calloc(1, sizeof(*n));
880: n->line = line;
881: n->pos = pos;
882: n->tok = tok;
883: n->type = type;
884: n->sec = man->lastsec;
885:
886: if (man->flags & MDOC_SYNOPSIS)
1.157 schwarze 887: n->flags |= NODE_SYNPRETTY;
1.138 schwarze 888: else
1.157 schwarze 889: n->flags &= ~NODE_SYNPRETTY;
1.138 schwarze 890: if (man->flags & MDOC_NEWLINE)
1.157 schwarze 891: n->flags |= NODE_LINE;
1.138 schwarze 892: man->flags &= ~MDOC_NEWLINE;
893:
1.149 schwarze 894: return n;
1.138 schwarze 895: }
896:
897: void
898: roff_node_append(struct roff_man *man, struct roff_node *n)
899: {
900:
901: switch (man->next) {
902: case ROFF_NEXT_SIBLING:
1.153 schwarze 903: if (man->last->next != NULL) {
904: n->next = man->last->next;
905: man->last->next->prev = n;
906: } else
907: man->last->parent->last = n;
1.138 schwarze 908: man->last->next = n;
909: n->prev = man->last;
910: n->parent = man->last->parent;
911: break;
912: case ROFF_NEXT_CHILD:
1.159 schwarze 913: if (man->last->child != NULL) {
914: n->next = man->last->child;
915: man->last->child->prev = n;
916: } else
917: man->last->last = n;
1.138 schwarze 918: man->last->child = n;
919: n->parent = man->last;
920: break;
921: default:
922: abort();
923: }
1.154 schwarze 924: man->last = n;
1.138 schwarze 925:
926: switch (n->type) {
927: case ROFFT_HEAD:
928: n->parent->head = n;
929: break;
930: case ROFFT_BODY:
1.154 schwarze 931: if (n->end != ENDBODY_NOT)
932: return;
1.138 schwarze 933: n->parent->body = n;
934: break;
935: case ROFFT_TAIL:
936: n->parent->tail = n;
937: break;
938: default:
1.154 schwarze 939: return;
1.138 schwarze 940: }
1.154 schwarze 941:
942: /*
943: * Copy over the normalised-data pointer of our parent. Not
944: * everybody has one, but copying a null pointer is fine.
945: */
946:
947: n->norm = n->parent->norm;
948: assert(n->parent->type == ROFFT_BLOCK);
1.138 schwarze 949: }
950:
1.139 schwarze 951: void
952: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
953: {
954: struct roff_node *n;
955:
956: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
957: n->string = roff_strdup(man->roff, word);
958: roff_node_append(man, n);
1.158 schwarze 959: n->flags |= NODE_VALID | NODE_ENDED;
1.139 schwarze 960: man->next = ROFF_NEXT_SIBLING;
961: }
962:
963: void
964: roff_word_append(struct roff_man *man, const char *word)
965: {
966: struct roff_node *n;
967: char *addstr, *newstr;
968:
969: n = man->last;
970: addstr = roff_strdup(man->roff, word);
971: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
972: free(addstr);
973: free(n->string);
974: n->string = newstr;
975: man->next = ROFF_NEXT_SIBLING;
1.140 schwarze 976: }
977:
978: void
979: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
980: {
981: struct roff_node *n;
982:
983: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
984: roff_node_append(man, n);
985: man->next = ROFF_NEXT_CHILD;
986: }
987:
988: struct roff_node *
989: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
990: {
991: struct roff_node *n;
992:
993: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
994: roff_node_append(man, n);
995: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 996: return n;
1.139 schwarze 997: }
998:
1.138 schwarze 999: struct roff_node *
1000: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
1001: {
1002: struct roff_node *n;
1003:
1004: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
1005: roff_node_append(man, n);
1006: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 1007: return n;
1.138 schwarze 1008: }
1009:
1010: struct roff_node *
1011: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1012: {
1013: struct roff_node *n;
1014:
1015: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1016: roff_node_append(man, n);
1017: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 1018: return n;
1.139 schwarze 1019: }
1020:
1.193 schwarze 1021: static void
1.218 schwarze 1022: roff_addtbl(struct roff_man *man, int line, struct tbl_node *tbl)
1.139 schwarze 1023: {
1024: struct roff_node *n;
1.218 schwarze 1025: struct tbl_span *span;
1.139 schwarze 1026:
1.228 schwarze 1027: if (man->meta.macroset == MACROSET_MAN)
1.174 schwarze 1028: man_breakscope(man, ROFF_TS);
1.193 schwarze 1029: while ((span = tbl_span(tbl)) != NULL) {
1.218 schwarze 1030: n = roff_node_alloc(man, line, 0, ROFFT_TBL, TOKEN_NONE);
1.193 schwarze 1031: n->span = span;
1032: roff_node_append(man, n);
1033: n->flags |= NODE_VALID | NODE_ENDED;
1034: man->next = ROFF_NEXT_SIBLING;
1035: }
1.138 schwarze 1036: }
1037:
1038: void
1039: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1040: {
1041:
1042: /* Adjust siblings. */
1043:
1044: if (n->prev)
1045: n->prev->next = n->next;
1046: if (n->next)
1047: n->next->prev = n->prev;
1048:
1049: /* Adjust parent. */
1050:
1051: if (n->parent != NULL) {
1052: if (n->parent->child == n)
1053: n->parent->child = n->next;
1054: if (n->parent->last == n)
1055: n->parent->last = n->prev;
1056: }
1057:
1058: /* Adjust parse point. */
1059:
1060: if (man == NULL)
1061: return;
1062: if (man->last == n) {
1063: if (n->prev == NULL) {
1064: man->last = n->parent;
1065: man->next = ROFF_NEXT_CHILD;
1066: } else {
1067: man->last = n->prev;
1068: man->next = ROFF_NEXT_SIBLING;
1069: }
1070: }
1.228 schwarze 1071: if (man->meta.first == n)
1072: man->meta.first = NULL;
1.216 schwarze 1073: }
1074:
1075: void
1076: roff_node_relink(struct roff_man *man, struct roff_node *n)
1077: {
1078: roff_node_unlink(man, n);
1079: n->prev = n->next = NULL;
1080: roff_node_append(man, n);
1.138 schwarze 1081: }
1082:
1083: void
1084: roff_node_free(struct roff_node *n)
1085: {
1086:
1087: if (n->args != NULL)
1088: mdoc_argv_free(n->args);
1089: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1090: free(n->norm);
1.219 schwarze 1091: eqn_box_free(n->eqn);
1.138 schwarze 1092: free(n->string);
1093: free(n);
1094: }
1095:
1096: void
1097: roff_node_delete(struct roff_man *man, struct roff_node *n)
1098: {
1099:
1100: while (n->child != NULL)
1101: roff_node_delete(man, n->child);
1102: roff_node_unlink(man, n);
1103: roff_node_free(n);
1.141 schwarze 1104: }
1105:
1106: void
1107: deroff(char **dest, const struct roff_node *n)
1108: {
1109: char *cp;
1110: size_t sz;
1111:
1112: if (n->type != ROFFT_TEXT) {
1113: for (n = n->child; n != NULL; n = n->next)
1114: deroff(dest, n);
1115: return;
1116: }
1117:
1.160 schwarze 1118: /* Skip leading whitespace. */
1.141 schwarze 1119:
1.160 schwarze 1120: for (cp = n->string; *cp != '\0'; cp++) {
1.161 schwarze 1121: if (cp[0] == '\\' && cp[1] != '\0' &&
1122: strchr(" %&0^|~", cp[1]) != NULL)
1.141 schwarze 1123: cp++;
1.160 schwarze 1124: else if ( ! isspace((unsigned char)*cp))
1.141 schwarze 1125: break;
1126: }
1127:
1.161 schwarze 1128: /* Skip trailing backslash. */
1129:
1130: sz = strlen(cp);
1.162 schwarze 1131: if (sz > 0 && cp[sz - 1] == '\\')
1.161 schwarze 1132: sz--;
1133:
1.141 schwarze 1134: /* Skip trailing whitespace. */
1135:
1.161 schwarze 1136: for (; sz; sz--)
1.141 schwarze 1137: if ( ! isspace((unsigned char)cp[sz-1]))
1138: break;
1139:
1140: /* Skip empty strings. */
1141:
1142: if (sz == 0)
1143: return;
1144:
1145: if (*dest == NULL) {
1146: *dest = mandoc_strndup(cp, sz);
1147: return;
1148: }
1149:
1150: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1151: free(*dest);
1152: *dest = cp;
1.138 schwarze 1153: }
1154:
1155: /* --- main functions of the roff parser ---------------------------------- */
1156:
1.8 schwarze 1157: /*
1.227 schwarze 1158: * In the current line, expand escape sequences that produce parsable
1159: * input text. Also check the syntax of the remaining escape sequences,
1160: * which typically produce output glyphs or change formatter state.
1.8 schwarze 1161: */
1.212 schwarze 1162: static int
1.227 schwarze 1163: roff_expand(struct roff *r, struct buf *buf, int ln, int pos, char newesc)
1.8 schwarze 1164: {
1.211 schwarze 1165: struct mctx *ctx; /* current macro call context */
1.81 schwarze 1166: char ubuf[24]; /* buffer to print the number */
1.200 schwarze 1167: struct roff_node *n; /* used for header comments */
1.78 schwarze 1168: const char *start; /* start of the string to process */
1.82 schwarze 1169: char *stesc; /* start of an escape sequence ('\\') */
1.224 schwarze 1170: const char *esct; /* type of esccape sequence */
1.200 schwarze 1171: char *ep; /* end of comment string */
1.23 schwarze 1172: const char *stnam; /* start of the name, after "[(*" */
1173: const char *cp; /* end of the name, e.g. before ']' */
1174: const char *res; /* the string to be substituted */
1.110 schwarze 1175: char *nbuf; /* new buffer to copy buf->buf to */
1.53 schwarze 1176: size_t maxl; /* expected length of the escape name */
1177: size_t naml; /* actual length of the escape name */
1.211 schwarze 1178: size_t asz; /* length of the replacement */
1179: size_t rsz; /* length of the rest of the string */
1.109 schwarze 1180: int inaml; /* length returned from mandoc_escape() */
1.53 schwarze 1181: int expand_count; /* to avoid infinite loops */
1.79 schwarze 1182: int npos; /* position in numeric expression */
1.91 schwarze 1183: int arg_complete; /* argument not interrupted by eol */
1.211 schwarze 1184: int quote_args; /* true for \\$@, false for \\$* */
1.175 schwarze 1185: int done; /* no more input available */
1.187 schwarze 1186: int deftype; /* type of definition to paste */
1.195 schwarze 1187: int rcsid; /* kind of RCS id seen */
1.224 schwarze 1188: enum mandocerr err; /* for escape sequence problems */
1.199 schwarze 1189: char sign; /* increment number register */
1.79 schwarze 1190: char term; /* character terminating the escape */
1.8 schwarze 1191:
1.175 schwarze 1192: /* Search forward for comments. */
1193:
1194: done = 0;
1195: start = buf->buf + pos;
1196: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1.227 schwarze 1197: if (stesc[0] != newesc || stesc[1] == '\0')
1.175 schwarze 1198: continue;
1199: stesc++;
1200: if (*stesc != '"' && *stesc != '#')
1201: continue;
1.185 schwarze 1202:
1203: /* Comment found, look for RCS id. */
1204:
1.195 schwarze 1205: rcsid = 0;
1.185 schwarze 1206: if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
1.195 schwarze 1207: rcsid = 1 << MANDOC_OS_OPENBSD;
1.185 schwarze 1208: cp += 8;
1209: } else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
1.195 schwarze 1210: rcsid = 1 << MANDOC_OS_NETBSD;
1.185 schwarze 1211: cp += 7;
1212: }
1213: if (cp != NULL &&
1214: isalnum((unsigned char)*cp) == 0 &&
1.186 schwarze 1215: strchr(cp, '$') != NULL) {
1.195 schwarze 1216: if (r->man->meta.rcsids & rcsid)
1.222 schwarze 1217: mandoc_msg(MANDOCERR_RCS_REP, ln,
1218: (int)(stesc - buf->buf) + 1,
1219: "%s", stesc + 1);
1.195 schwarze 1220: r->man->meta.rcsids |= rcsid;
1.186 schwarze 1221: }
1.185 schwarze 1222:
1223: /* Handle trailing whitespace. */
1224:
1.200 schwarze 1225: ep = strchr(stesc--, '\0') - 1;
1226: if (*ep == '\n') {
1.175 schwarze 1227: done = 1;
1.200 schwarze 1228: ep--;
1.175 schwarze 1229: }
1.200 schwarze 1230: if (*ep == ' ' || *ep == '\t')
1.222 schwarze 1231: mandoc_msg(MANDOCERR_SPACE_EOL,
1232: ln, (int)(ep - buf->buf), NULL);
1.200 schwarze 1233:
1234: /*
1235: * Save comments preceding the title macro
1236: * in the syntax tree.
1237: */
1238:
1.227 schwarze 1239: if (newesc != ASCII_ESC && r->format == 0) {
1.200 schwarze 1240: while (*ep == ' ' || *ep == '\t')
1241: ep--;
1242: ep[1] = '\0';
1243: n = roff_node_alloc(r->man,
1244: ln, stesc + 1 - buf->buf,
1245: ROFFT_COMMENT, TOKEN_NONE);
1246: n->string = mandoc_strdup(stesc + 2);
1247: roff_node_append(r->man, n);
1248: n->flags |= NODE_VALID | NODE_ENDED;
1249: r->man->next = ROFF_NEXT_SIBLING;
1250: }
1251:
1.206 schwarze 1252: /* Line continuation with comment. */
1253:
1254: if (stesc[1] == '#') {
1255: *stesc = '\0';
1.212 schwarze 1256: return ROFF_IGN | ROFF_APPEND;
1.206 schwarze 1257: }
1258:
1259: /* Discard normal comments. */
1.200 schwarze 1260:
1.207 schwarze 1261: while (stesc > start && stesc[-1] == ' ' &&
1262: (stesc == start + 1 || stesc[-2] != '\\'))
1.175 schwarze 1263: stesc--;
1264: *stesc = '\0';
1265: break;
1266: }
1267: if (stesc == start)
1268: return ROFF_CONT;
1269: stesc--;
1270:
1271: /* Notice the end of the input. */
1272:
1273: if (*stesc == '\n') {
1274: *stesc-- = '\0';
1275: done = 1;
1276: }
1277:
1.43 schwarze 1278: expand_count = 0;
1.175 schwarze 1279: while (stesc >= start) {
1.227 schwarze 1280: if (*stesc != newesc) {
1.43 schwarze 1281:
1.227 schwarze 1282: /*
1283: * If we have a non-standard escape character,
1284: * escape literal backslashes because all
1285: * processing in subsequent functions uses
1286: * the standard escaping rules.
1287: */
1.78 schwarze 1288:
1.227 schwarze 1289: if (newesc != ASCII_ESC && *stesc == '\\') {
1.175 schwarze 1290: *stesc = '\0';
1291: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1292: buf->buf, stesc + 1) + 1;
1293: start = nbuf + pos;
1294: stesc = nbuf + (stesc - buf->buf);
1295: free(buf->buf);
1296: buf->buf = nbuf;
1297: }
1.227 schwarze 1298:
1299: /* Search backwards for the next escape. */
1300:
1.175 schwarze 1301: stesc--;
1.78 schwarze 1302: continue;
1.175 schwarze 1303: }
1.78 schwarze 1304:
1305: /* If it is escaped, skip it. */
1306:
1307: for (cp = stesc - 1; cp >= start; cp--)
1.175 schwarze 1308: if (*cp != r->escape)
1.78 schwarze 1309: break;
1310:
1.110 schwarze 1311: if ((stesc - cp) % 2 == 0) {
1.175 schwarze 1312: while (stesc > cp)
1313: *stesc-- = '\\';
1.78 schwarze 1314: continue;
1.175 schwarze 1315: } else if (stesc[1] != '\0') {
1316: *stesc = '\\';
1317: } else {
1318: *stesc-- = '\0';
1319: if (done)
1320: continue;
1321: else
1.212 schwarze 1322: return ROFF_IGN | ROFF_APPEND;
1.78 schwarze 1323: }
1.23 schwarze 1324:
1.79 schwarze 1325: /* Decide whether to expand or to check only. */
1.23 schwarze 1326:
1.79 schwarze 1327: term = '\0';
1.78 schwarze 1328: cp = stesc + 1;
1.224 schwarze 1329: if (*cp == 'E')
1330: cp++;
1331: esct = cp;
1332: switch (*esct) {
1.80 schwarze 1333: case '*':
1.211 schwarze 1334: case '$':
1.53 schwarze 1335: res = NULL;
1336: break;
1.80 schwarze 1337: case 'B':
1338: case 'w':
1.79 schwarze 1339: term = cp[1];
1340: /* FALLTHROUGH */
1.80 schwarze 1341: case 'n':
1.199 schwarze 1342: sign = cp[1];
1343: if (sign == '+' || sign == '-')
1344: cp++;
1.53 schwarze 1345: res = ubuf;
1346: break;
1347: default:
1.224 schwarze 1348: err = MANDOCERR_OK;
1349: switch(mandoc_escape(&cp, &stnam, &inaml)) {
1350: case ESCAPE_SPECIAL:
1351: if (mchars_spec2cp(stnam, inaml) >= 0)
1352: break;
1353: /* FALLTHROUGH */
1354: case ESCAPE_ERROR:
1355: err = MANDOCERR_ESC_BAD;
1356: break;
1357: case ESCAPE_UNDEF:
1358: err = MANDOCERR_ESC_UNDEF;
1359: break;
1360: case ESCAPE_UNSUPP:
1361: err = MANDOCERR_ESC_UNSUPP;
1362: break;
1363: default:
1364: break;
1365: }
1366: if (err != MANDOCERR_OK)
1367: mandoc_msg(err, ln, (int)(stesc - buf->buf),
1.92 schwarze 1368: "%.*s", (int)(cp - stesc), stesc);
1.175 schwarze 1369: stesc--;
1.78 schwarze 1370: continue;
1.42 schwarze 1371: }
1372:
1.78 schwarze 1373: if (EXPAND_LIMIT < ++expand_count) {
1.222 schwarze 1374: mandoc_msg(MANDOCERR_ROFFLOOP,
1.110 schwarze 1375: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1376: return ROFF_IGN;
1.78 schwarze 1377: }
1.23 schwarze 1378:
1379: /*
1380: * The third character decides the length
1.53 schwarze 1381: * of the name of the string or register.
1.23 schwarze 1382: * Save a pointer to the name.
1383: */
1384:
1.110 schwarze 1385: if (term == '\0') {
1.79 schwarze 1386: switch (*++cp) {
1.80 schwarze 1387: case '\0':
1.79 schwarze 1388: maxl = 0;
1389: break;
1.80 schwarze 1390: case '(':
1.79 schwarze 1391: cp++;
1392: maxl = 2;
1393: break;
1.80 schwarze 1394: case '[':
1.79 schwarze 1395: cp++;
1396: term = ']';
1397: maxl = 0;
1398: break;
1399: default:
1400: maxl = 1;
1401: break;
1402: }
1403: } else {
1404: cp += 2;
1.8 schwarze 1405: maxl = 0;
1406: }
1.23 schwarze 1407: stnam = cp;
1.8 schwarze 1408:
1.23 schwarze 1409: /* Advance to the end of the name. */
1.8 schwarze 1410:
1.125 schwarze 1411: naml = 0;
1.91 schwarze 1412: arg_complete = 1;
1.125 schwarze 1413: while (maxl == 0 || naml < maxl) {
1.110 schwarze 1414: if (*cp == '\0') {
1.222 schwarze 1415: mandoc_msg(MANDOCERR_ESC_BAD, ln,
1416: (int)(stesc - buf->buf), "%s", stesc);
1.91 schwarze 1417: arg_complete = 0;
1.79 schwarze 1418: break;
1.42 schwarze 1419: }
1.110 schwarze 1420: if (maxl == 0 && *cp == term) {
1.79 schwarze 1421: cp++;
1.125 schwarze 1422: break;
1423: }
1.224 schwarze 1424: if (*cp++ != '\\' || *esct != 'w') {
1.125 schwarze 1425: naml++;
1426: continue;
1427: }
1428: switch (mandoc_escape(&cp, NULL, NULL)) {
1429: case ESCAPE_SPECIAL:
1430: case ESCAPE_UNICODE:
1431: case ESCAPE_NUMBERED:
1.224 schwarze 1432: case ESCAPE_UNDEF:
1.125 schwarze 1433: case ESCAPE_OVERSTRIKE:
1434: naml++;
1435: break;
1436: default:
1.8 schwarze 1437: break;
1.79 schwarze 1438: }
1.8 schwarze 1439: }
1440:
1.23 schwarze 1441: /*
1442: * Retrieve the replacement string; if it is
1443: * undefined, resume searching for escapes.
1444: */
1445:
1.224 schwarze 1446: switch (*esct) {
1.80 schwarze 1447: case '*':
1.187 schwarze 1448: if (arg_complete) {
1449: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1450: res = roff_getstrn(r, stnam, naml, &deftype);
1.203 schwarze 1451:
1452: /*
1453: * If not overriden, let \*(.T
1454: * through to the formatters.
1455: */
1456:
1457: if (res == NULL && naml == 2 &&
1458: stnam[0] == '.' && stnam[1] == 'T') {
1459: roff_setstrn(&r->strtab,
1460: ".T", 2, NULL, 0, 0);
1461: stesc--;
1462: continue;
1463: }
1.187 schwarze 1464: }
1.79 schwarze 1465: break;
1.211 schwarze 1466: case '$':
1467: if (r->mstackpos < 0) {
1.222 schwarze 1468: mandoc_msg(MANDOCERR_ARG_UNDEF, ln,
1469: (int)(stesc - buf->buf), "%.3s", stesc);
1.211 schwarze 1470: break;
1471: }
1472: ctx = r->mstack + r->mstackpos;
1.224 schwarze 1473: npos = esct[1] - '1';
1.211 schwarze 1474: if (npos >= 0 && npos <= 8) {
1475: res = npos < ctx->argc ?
1476: ctx->argv[npos] : "";
1477: break;
1478: }
1.224 schwarze 1479: if (esct[1] == '*')
1.211 schwarze 1480: quote_args = 0;
1.224 schwarze 1481: else if (esct[1] == '@')
1.211 schwarze 1482: quote_args = 1;
1483: else {
1.222 schwarze 1484: mandoc_msg(MANDOCERR_ARG_NONUM, ln,
1485: (int)(stesc - buf->buf), "%.3s", stesc);
1.211 schwarze 1486: break;
1487: }
1488: asz = 0;
1489: for (npos = 0; npos < ctx->argc; npos++) {
1490: if (npos)
1491: asz++; /* blank */
1492: if (quote_args)
1493: asz += 2; /* quotes */
1494: asz += strlen(ctx->argv[npos]);
1495: }
1496: if (asz != 3) {
1497: rsz = buf->sz - (stesc - buf->buf) - 3;
1498: if (asz < 3)
1499: memmove(stesc + asz, stesc + 3, rsz);
1500: buf->sz += asz - 3;
1501: nbuf = mandoc_realloc(buf->buf, buf->sz);
1502: start = nbuf + pos;
1503: stesc = nbuf + (stesc - buf->buf);
1504: buf->buf = nbuf;
1505: if (asz > 3)
1506: memmove(stesc + asz, stesc + 3, rsz);
1507: }
1508: for (npos = 0; npos < ctx->argc; npos++) {
1509: if (npos)
1510: *stesc++ = ' ';
1511: if (quote_args)
1512: *stesc++ = '"';
1513: cp = ctx->argv[npos];
1514: while (*cp != '\0')
1515: *stesc++ = *cp++;
1516: if (quote_args)
1517: *stesc++ = '"';
1518: }
1519: continue;
1.80 schwarze 1520: case 'B':
1.79 schwarze 1521: npos = 0;
1.91 schwarze 1522: ubuf[0] = arg_complete &&
1.133 schwarze 1523: roff_evalnum(r, ln, stnam, &npos,
1524: NULL, ROFFNUM_SCALE) &&
1.91 schwarze 1525: stnam + npos + 1 == cp ? '1' : '0';
1.79 schwarze 1526: ubuf[1] = '\0';
1527: break;
1.80 schwarze 1528: case 'n':
1.91 schwarze 1529: if (arg_complete)
1530: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.199 schwarze 1531: roff_getregn(r, stnam, naml, sign));
1.91 schwarze 1532: else
1533: ubuf[0] = '\0';
1.79 schwarze 1534: break;
1.80 schwarze 1535: case 'w':
1.91 schwarze 1536: /* use even incomplete args */
1.81 schwarze 1537: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.79 schwarze 1538: 24 * (int)naml);
1539: break;
1540: }
1.8 schwarze 1541:
1.110 schwarze 1542: if (res == NULL) {
1.224 schwarze 1543: if (*esct == '*')
1.222 schwarze 1544: mandoc_msg(MANDOCERR_STR_UNDEF,
1545: ln, (int)(stesc - buf->buf),
1.211 schwarze 1546: "%.*s", (int)naml, stnam);
1.37 schwarze 1547: res = "";
1.118 schwarze 1548: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1.222 schwarze 1549: mandoc_msg(MANDOCERR_ROFFLOOP,
1.118 schwarze 1550: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1551: return ROFF_IGN;
1.8 schwarze 1552: }
1553:
1.23 schwarze 1554: /* Replace the escape sequence by the string. */
1555:
1.82 schwarze 1556: *stesc = '\0';
1.110 schwarze 1557: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1558: buf->buf, res, cp) + 1;
1.8 schwarze 1559:
1.78 schwarze 1560: /* Prepare for the next replacement. */
1.8 schwarze 1561:
1.78 schwarze 1562: start = nbuf + pos;
1.110 schwarze 1563: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1564: free(buf->buf);
1565: buf->buf = nbuf;
1.42 schwarze 1566: }
1.149 schwarze 1567: return ROFF_CONT;
1.42 schwarze 1568: }
1.225 schwarze 1569:
1570: /*
1571: * Parse a quoted or unquoted roff-style request or macro argument.
1572: * Return a pointer to the parsed argument, which is either the original
1573: * pointer or advanced by one byte in case the argument is quoted.
1574: * NUL-terminate the argument in place.
1575: * Collapse pairs of quotes inside quoted arguments.
1576: * Advance the argument pointer to the next argument,
1577: * or to the NUL byte terminating the argument line.
1578: */
1579: char *
1.227 schwarze 1580: roff_getarg(struct roff *r, char **cpp, int ln, int *pos)
1.225 schwarze 1581: {
1.227 schwarze 1582: struct buf buf;
1583: char *cp, *start;
1584: int newesc, pairs, quoted, white;
1.225 schwarze 1585:
1586: /* Quoting can only start with a new word. */
1587: start = *cpp;
1588: quoted = 0;
1589: if ('"' == *start) {
1590: quoted = 1;
1591: start++;
1592: }
1593:
1.227 schwarze 1594: newesc = pairs = white = 0;
1.225 schwarze 1595: for (cp = start; '\0' != *cp; cp++) {
1596:
1597: /*
1598: * Move the following text left
1599: * after quoted quotes and after "\\" and "\t".
1600: */
1601: if (pairs)
1602: cp[-pairs] = cp[0];
1603:
1604: if ('\\' == cp[0]) {
1605: /*
1606: * In copy mode, translate double to single
1607: * backslashes and backslash-t to literal tabs.
1608: */
1609: switch (cp[1]) {
1610: case 'a':
1611: case 't':
1.226 schwarze 1612: cp[-pairs] = '\t';
1.227 schwarze 1613: pairs++;
1614: cp++;
1615: break;
1.225 schwarze 1616: case '\\':
1.227 schwarze 1617: newesc = 1;
1618: cp[-pairs] = ASCII_ESC;
1.225 schwarze 1619: pairs++;
1620: cp++;
1621: break;
1622: case ' ':
1623: /* Skip escaped blanks. */
1624: if (0 == quoted)
1625: cp++;
1626: break;
1627: default:
1628: break;
1629: }
1630: } else if (0 == quoted) {
1631: if (' ' == cp[0]) {
1632: /* Unescaped blanks end unquoted args. */
1633: white = 1;
1634: break;
1635: }
1636: } else if ('"' == cp[0]) {
1637: if ('"' == cp[1]) {
1638: /* Quoted quotes collapse. */
1639: pairs++;
1640: cp++;
1641: } else {
1642: /* Unquoted quotes end quoted args. */
1643: quoted = 2;
1644: break;
1645: }
1646: }
1647: }
1648:
1649: /* Quoted argument without a closing quote. */
1650: if (1 == quoted)
1651: mandoc_msg(MANDOCERR_ARG_QUOTE, ln, *pos, NULL);
1652:
1653: /* NUL-terminate this argument and move to the next one. */
1654: if (pairs)
1655: cp[-pairs] = '\0';
1656: if ('\0' != *cp) {
1657: *cp++ = '\0';
1658: while (' ' == *cp)
1659: cp++;
1660: }
1661: *pos += (int)(cp - start) + (quoted ? 1 : 0);
1662: *cpp = cp;
1663:
1664: if ('\0' == *cp && (white || ' ' == cp[-1]))
1665: mandoc_msg(MANDOCERR_SPACE_EOL, ln, *pos, NULL);
1666:
1.227 schwarze 1667: start = mandoc_strdup(start);
1668: if (newesc == 0)
1669: return start;
1670:
1671: buf.buf = start;
1672: buf.sz = strlen(start) + 1;
1673: buf.next = NULL;
1674: if (roff_expand(r, &buf, ln, 0, ASCII_ESC) & ROFF_IGN) {
1675: free(buf.buf);
1676: buf.buf = mandoc_strdup("");
1677: }
1678: return buf.buf;
1.225 schwarze 1679: }
1680:
1.42 schwarze 1681:
1682: /*
1.147 schwarze 1683: * Process text streams.
1.42 schwarze 1684: */
1.212 schwarze 1685: static int
1.177 schwarze 1686: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.42 schwarze 1687: {
1688: size_t sz;
1689: const char *start;
1.51 schwarze 1690: char *p;
1691: int isz;
1.42 schwarze 1692: enum mandoc_esc esc;
1693:
1.147 schwarze 1694: /* Spring the input line trap. */
1695:
1696: if (roffit_lines == 1) {
1697: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1698: free(buf->buf);
1699: buf->buf = p;
1700: buf->sz = isz + 1;
1701: *offs = 0;
1702: free(roffit_macro);
1703: roffit_lines = 0;
1.149 schwarze 1704: return ROFF_REPARSE;
1.147 schwarze 1705: } else if (roffit_lines > 1)
1706: --roffit_lines;
1707:
1.177 schwarze 1708: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1709: if (roffce_lines < 1) {
1710: r->man->last = roffce_node;
1711: r->man->next = ROFF_NEXT_SIBLING;
1712: roffce_lines = 0;
1713: roffce_node = NULL;
1714: } else
1715: roffce_lines--;
1716: }
1717:
1.147 schwarze 1718: /* Convert all breakable hyphens into ASCII_HYPH. */
1719:
1.110 schwarze 1720: start = p = buf->buf + pos;
1.42 schwarze 1721:
1.110 schwarze 1722: while (*p != '\0') {
1.42 schwarze 1723: sz = strcspn(p, "-\\");
1724: p += sz;
1725:
1.110 schwarze 1726: if (*p == '\0')
1.42 schwarze 1727: break;
1728:
1.110 schwarze 1729: if (*p == '\\') {
1.42 schwarze 1730: /* Skip over escapes. */
1731: p++;
1.62 schwarze 1732: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.110 schwarze 1733: if (esc == ESCAPE_ERROR)
1.42 schwarze 1734: break;
1.136 schwarze 1735: while (*p == '-')
1736: p++;
1.42 schwarze 1737: continue;
1738: } else if (p == start) {
1739: p++;
1740: continue;
1741: }
1742:
1.44 schwarze 1743: if (isalpha((unsigned char)p[-1]) &&
1744: isalpha((unsigned char)p[1]))
1.42 schwarze 1745: *p = ASCII_HYPH;
1746: p++;
1.8 schwarze 1747: }
1.149 schwarze 1748: return ROFF_CONT;
1.8 schwarze 1749: }
1750:
1.212 schwarze 1751: int
1.110 schwarze 1752: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.1 schwarze 1753: {
1.166 schwarze 1754: enum roff_tok t;
1.212 schwarze 1755: int e;
1.110 schwarze 1756: int pos; /* parse point */
1.115 schwarze 1757: int spos; /* saved parse point for messages */
1.110 schwarze 1758: int ppos; /* original offset in buf->buf */
1759: int ctl; /* macro line (boolean) */
1760:
1761: ppos = pos = *offs;
1.1 schwarze 1762:
1.102 schwarze 1763: /* Handle in-line equation delimiters. */
1764:
1.108 schwarze 1765: if (r->tbl == NULL &&
1766: r->last_eqn != NULL && r->last_eqn->delim &&
1.102 schwarze 1767: (r->eqn == NULL || r->eqn_inline)) {
1.110 schwarze 1768: e = roff_eqndelim(r, buf, pos);
1.102 schwarze 1769: if (e == ROFF_REPARSE)
1.149 schwarze 1770: return e;
1.102 schwarze 1771: assert(e == ROFF_CONT);
1772: }
1773:
1774: /* Expand some escape sequences. */
1.8 schwarze 1775:
1.227 schwarze 1776: e = roff_expand(r, buf, ln, pos, r->escape);
1.212 schwarze 1777: if ((e & ROFF_MASK) == ROFF_IGN)
1.149 schwarze 1778: return e;
1.110 schwarze 1779: assert(e == ROFF_CONT);
1.8 schwarze 1780:
1.110 schwarze 1781: ctl = roff_getcontrol(r, buf->buf, &pos);
1.35 schwarze 1782:
1.8 schwarze 1783: /*
1.2 schwarze 1784: * First, if a scope is open and we're not a macro, pass the
1.124 schwarze 1785: * text through the macro's filter.
1786: * Equations process all content themselves.
1787: * Tables process almost all content themselves, but we want
1788: * to warn about macros before passing it there.
1.2 schwarze 1789: */
1790:
1.124 schwarze 1791: if (r->last != NULL && ! ctl) {
1.2 schwarze 1792: t = r->last->tok;
1.110 schwarze 1793: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.212 schwarze 1794: if ((e & ROFF_MASK) == ROFF_IGN)
1.149 schwarze 1795: return e;
1.212 schwarze 1796: e &= ~ROFF_MASK;
1797: } else
1798: e = ROFF_IGN;
1.191 schwarze 1799: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1800: eqn_read(r->eqn, buf->buf + ppos);
1.212 schwarze 1801: return e;
1.191 schwarze 1802: }
1.193 schwarze 1803: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1804: tbl_read(r->tbl, ln, buf->buf, ppos);
1.218 schwarze 1805: roff_addtbl(r->man, ln, r->tbl);
1.212 schwarze 1806: return e;
1.193 schwarze 1807: }
1.124 schwarze 1808: if ( ! ctl)
1.212 schwarze 1809: return roff_parsetext(r, buf, pos, offs) | e;
1.100 schwarze 1810:
1811: /* Skip empty request lines. */
1812:
1.110 schwarze 1813: if (buf->buf[pos] == '"') {
1.222 schwarze 1814: mandoc_msg(MANDOCERR_COMMENT_BAD, ln, pos, NULL);
1.149 schwarze 1815: return ROFF_IGN;
1.110 schwarze 1816: } else if (buf->buf[pos] == '\0')
1.149 schwarze 1817: return ROFF_IGN;
1.2 schwarze 1818:
1819: /*
1820: * If a scope is open, go to the child handler for that macro,
1821: * as it may want to preprocess before doing anything with it.
1.32 schwarze 1822: * Don't do so if an equation is open.
1.2 schwarze 1823: */
1824:
1825: if (r->last) {
1.1 schwarze 1826: t = r->last->tok;
1.149 schwarze 1827: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1828: }
1829:
1.115 schwarze 1830: /* No scope is open. This is a new request or macro. */
1831:
1832: spos = pos;
1833: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1834:
1835: /* Tables ignore most macros. */
1836:
1.180 schwarze 1837: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.181 schwarze 1838: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.222 schwarze 1839: mandoc_msg(MANDOCERR_TBLMACRO,
1840: ln, pos, "%s", buf->buf + spos);
1.180 schwarze 1841: if (t != TOKEN_NONE)
1.149 schwarze 1842: return ROFF_IGN;
1.129 schwarze 1843: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1844: pos++;
1.163 schwarze 1845: while (buf->buf[pos] == ' ')
1.129 schwarze 1846: pos++;
1.193 schwarze 1847: tbl_read(r->tbl, ln, buf->buf, pos);
1.218 schwarze 1848: roff_addtbl(r->man, ln, r->tbl);
1.193 schwarze 1849: return ROFF_IGN;
1.115 schwarze 1850: }
1851:
1.177 schwarze 1852: /* For now, let high level macros abort .ce mode. */
1853:
1854: if (ctl && roffce_node != NULL &&
1.196 schwarze 1855: (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
1856: t == ROFF_TH || t == ROFF_TS)) {
1.177 schwarze 1857: r->man->last = roffce_node;
1858: r->man->next = ROFF_NEXT_SIBLING;
1859: roffce_lines = 0;
1860: roffce_node = NULL;
1861: }
1862:
1.2 schwarze 1863: /*
1.115 schwarze 1864: * This is neither a roff request nor a user-defined macro.
1865: * Let the standard macro set parsers handle it.
1.2 schwarze 1866: */
1867:
1.166 schwarze 1868: if (t == TOKEN_NONE)
1.149 schwarze 1869: return ROFF_CONT;
1.115 schwarze 1870:
1871: /* Execute a roff request or a user defined macro. */
1.1 schwarze 1872:
1.168 schwarze 1873: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.2 schwarze 1874: }
1875:
1.211 schwarze 1876: /*
1877: * Internal interface function to tell the roff parser that execution
1878: * of the current macro ended. This is required because macro
1879: * definitions usually do not end with a .return request.
1880: */
1881: void
1882: roff_userret(struct roff *r)
1883: {
1884: struct mctx *ctx;
1885: int i;
1886:
1887: assert(r->mstackpos >= 0);
1888: ctx = r->mstack + r->mstackpos;
1889: for (i = 0; i < ctx->argc; i++)
1890: free(ctx->argv[i]);
1891: ctx->argc = 0;
1892: r->mstackpos--;
1893: }
1894:
1.27 schwarze 1895: void
1.2 schwarze 1896: roff_endparse(struct roff *r)
1897: {
1.193 schwarze 1898: if (r->last != NULL)
1.222 schwarze 1899: mandoc_msg(MANDOCERR_BLK_NOEND, r->last->line,
1900: r->last->col, "%s", roff_name[r->last->tok]);
1.27 schwarze 1901:
1.193 schwarze 1902: if (r->eqn != NULL) {
1.222 schwarze 1903: mandoc_msg(MANDOCERR_BLK_NOEND,
1.191 schwarze 1904: r->eqn->node->line, r->eqn->node->pos, "EQ");
1905: eqn_parse(r->eqn);
1906: r->eqn = NULL;
1.32 schwarze 1907: }
1908:
1.193 schwarze 1909: if (r->tbl != NULL) {
1.218 schwarze 1910: tbl_end(r->tbl, 1);
1.193 schwarze 1911: r->tbl = NULL;
1.27 schwarze 1912: }
1.1 schwarze 1913: }
1914:
1915: /*
1916: * Parse a roff node's type from the input buffer. This must be in the
1917: * form of ".foo xxx" in the usual way.
1918: */
1.166 schwarze 1919: static enum roff_tok
1.87 schwarze 1920: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.1 schwarze 1921: {
1.87 schwarze 1922: char *cp;
1.16 schwarze 1923: const char *mac;
1924: size_t maclen;
1.187 schwarze 1925: int deftype;
1.166 schwarze 1926: enum roff_tok t;
1.1 schwarze 1927:
1.87 schwarze 1928: cp = buf + *pos;
1929:
1930: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.166 schwarze 1931: return TOKEN_NONE;
1.1 schwarze 1932:
1.87 schwarze 1933: mac = cp;
1934: maclen = roff_getname(r, &cp, ln, ppos);
1.1 schwarze 1935:
1.187 schwarze 1936: deftype = ROFFDEF_USER | ROFFDEF_REN;
1937: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
1938: switch (deftype) {
1939: case ROFFDEF_USER:
1940: t = ROFF_USERDEF;
1941: break;
1942: case ROFFDEF_REN:
1943: t = ROFF_RENAMED;
1944: break;
1945: default:
1946: t = roffhash_find(r->reqtab, mac, maclen);
1947: break;
1948: }
1.166 schwarze 1949: if (t != TOKEN_NONE)
1.87 schwarze 1950: *pos = cp - buf;
1.197 schwarze 1951: else if (deftype == ROFFDEF_UNDEF) {
1952: /* Using an undefined macro defines it to be empty. */
1953: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
1954: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
1955: }
1.149 schwarze 1956: return t;
1.1 schwarze 1957: }
1958:
1.138 schwarze 1959: /* --- handling of request blocks ----------------------------------------- */
1960:
1.212 schwarze 1961: static int
1.2 schwarze 1962: roff_cblock(ROFF_ARGS)
1.1 schwarze 1963: {
1964:
1.2 schwarze 1965: /*
1966: * A block-close `..' should only be invoked as a child of an
1967: * ignore macro, otherwise raise a warning and just ignore it.
1968: */
1969:
1.110 schwarze 1970: if (r->last == NULL) {
1.222 schwarze 1971: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.149 schwarze 1972: return ROFF_IGN;
1.2 schwarze 1973: }
1.1 schwarze 1974:
1.2 schwarze 1975: switch (r->last->tok) {
1.80 schwarze 1976: case ROFF_am:
1.93 schwarze 1977: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.80 schwarze 1978: case ROFF_ami:
1979: case ROFF_de:
1.23 schwarze 1980: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.80 schwarze 1981: case ROFF_dei:
1982: case ROFF_ig:
1.2 schwarze 1983: break;
1984: default:
1.222 schwarze 1985: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.149 schwarze 1986: return ROFF_IGN;
1.2 schwarze 1987: }
1988:
1.110 schwarze 1989: if (buf->buf[pos] != '\0')
1.222 schwarze 1990: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.110 schwarze 1991: ".. %s", buf->buf + pos);
1.2 schwarze 1992:
1993: roffnode_pop(r);
1994: roffnode_cleanscope(r);
1.149 schwarze 1995: return ROFF_IGN;
1.2 schwarze 1996:
1997: }
1.1 schwarze 1998:
1.212 schwarze 1999: static int
1.2 schwarze 2000: roffnode_cleanscope(struct roff *r)
2001: {
1.212 schwarze 2002: int inloop;
1.1 schwarze 2003:
1.212 schwarze 2004: inloop = 0;
2005: while (r->last != NULL) {
1.46 schwarze 2006: if (--r->last->endspan != 0)
1.2 schwarze 2007: break;
1.212 schwarze 2008: inloop += roffnode_pop(r);
1.2 schwarze 2009: }
1.212 schwarze 2010: return inloop;
1.2 schwarze 2011: }
1.1 schwarze 2012:
1.212 schwarze 2013: static int
1.68 schwarze 2014: roff_ccond(struct roff *r, int ln, int ppos)
1.2 schwarze 2015: {
2016: if (NULL == r->last) {
1.222 schwarze 2017: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.212 schwarze 2018: return 0;
1.2 schwarze 2019: }
1.1 schwarze 2020:
1.2 schwarze 2021: switch (r->last->tok) {
1.80 schwarze 2022: case ROFF_el:
2023: case ROFF_ie:
2024: case ROFF_if:
1.212 schwarze 2025: case ROFF_while:
1.2 schwarze 2026: break;
2027: default:
1.222 schwarze 2028: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.212 schwarze 2029: return 0;
1.2 schwarze 2030: }
1.1 schwarze 2031:
1.2 schwarze 2032: if (r->last->endspan > -1) {
1.222 schwarze 2033: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.212 schwarze 2034: return 0;
1.2 schwarze 2035: }
2036:
1.212 schwarze 2037: return roffnode_pop(r) + roffnode_cleanscope(r);
1.1 schwarze 2038: }
2039:
1.212 schwarze 2040: static int
1.2 schwarze 2041: roff_block(ROFF_ARGS)
1.1 schwarze 2042: {
1.187 schwarze 2043: const char *name, *value;
2044: char *call, *cp, *iname, *rname;
2045: size_t csz, namesz, rsz;
2046: int deftype;
1.16 schwarze 2047:
1.93 schwarze 2048: /* Ignore groff compatibility mode for now. */
1.2 schwarze 2049:
1.110 schwarze 2050: if (tok == ROFF_de1)
1.93 schwarze 2051: tok = ROFF_de;
1.123 schwarze 2052: else if (tok == ROFF_dei1)
2053: tok = ROFF_dei;
1.110 schwarze 2054: else if (tok == ROFF_am1)
1.93 schwarze 2055: tok = ROFF_am;
1.123 schwarze 2056: else if (tok == ROFF_ami1)
2057: tok = ROFF_ami;
1.93 schwarze 2058:
2059: /* Parse the macro name argument. */
2060:
1.110 schwarze 2061: cp = buf->buf + pos;
2062: if (tok == ROFF_ig) {
1.93 schwarze 2063: iname = NULL;
2064: namesz = 0;
2065: } else {
2066: iname = cp;
2067: namesz = roff_getname(r, &cp, ln, ppos);
2068: iname[namesz] = '\0';
2069: }
1.22 schwarze 2070:
1.93 schwarze 2071: /* Resolve the macro name argument if it is indirect. */
1.22 schwarze 2072:
1.110 schwarze 2073: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.187 schwarze 2074: deftype = ROFFDEF_USER;
2075: name = roff_getstrn(r, iname, namesz, &deftype);
2076: if (name == NULL) {
1.222 schwarze 2077: mandoc_msg(MANDOCERR_STR_UNDEF,
2078: ln, (int)(iname - buf->buf),
1.93 schwarze 2079: "%.*s", (int)namesz, iname);
2080: namesz = 0;
2081: } else
2082: namesz = strlen(name);
2083: } else
2084: name = iname;
1.22 schwarze 2085:
1.110 schwarze 2086: if (namesz == 0 && tok != ROFF_ig) {
1.222 schwarze 2087: mandoc_msg(MANDOCERR_REQ_EMPTY,
2088: ln, ppos, "%s", roff_name[tok]);
1.149 schwarze 2089: return ROFF_IGN;
1.93 schwarze 2090: }
1.2 schwarze 2091:
1.16 schwarze 2092: roffnode_push(r, tok, name, ln, ppos);
2093:
2094: /*
2095: * At the beginning of a `de' macro, clear the existing string
2096: * with the same name, if there is one. New content will be
1.66 schwarze 2097: * appended from roff_block_text() in multiline mode.
1.16 schwarze 2098: */
1.22 schwarze 2099:
1.183 schwarze 2100: if (tok == ROFF_de || tok == ROFF_dei) {
1.86 schwarze 2101: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.183 schwarze 2102: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.187 schwarze 2103: } else if (tok == ROFF_am || tok == ROFF_ami) {
2104: deftype = ROFFDEF_ANY;
2105: value = roff_getstrn(r, iname, namesz, &deftype);
2106: switch (deftype) { /* Before appending, ... */
2107: case ROFFDEF_PRE: /* copy predefined to user-defined. */
2108: roff_setstrn(&r->strtab, name, namesz,
2109: value, strlen(value), 0);
2110: break;
2111: case ROFFDEF_REN: /* call original standard macro. */
2112: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2113: (int)strlen(value), value);
2114: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2115: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
2116: free(call);
2117: break;
2118: case ROFFDEF_STD: /* rename and call standard macro. */
2119: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
2120: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
2121: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2122: (int)rsz, rname);
2123: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2124: free(call);
2125: free(rname);
2126: break;
2127: default:
2128: break;
2129: }
1.183 schwarze 2130: }
1.2 schwarze 2131:
1.110 schwarze 2132: if (*cp == '\0')
1.149 schwarze 2133: return ROFF_IGN;
1.1 schwarze 2134:
1.93 schwarze 2135: /* Get the custom end marker. */
1.22 schwarze 2136:
1.93 schwarze 2137: iname = cp;
1.86 schwarze 2138: namesz = roff_getname(r, &cp, ln, ppos);
1.93 schwarze 2139:
2140: /* Resolve the end marker if it is indirect. */
2141:
1.110 schwarze 2142: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.187 schwarze 2143: deftype = ROFFDEF_USER;
2144: name = roff_getstrn(r, iname, namesz, &deftype);
2145: if (name == NULL) {
1.222 schwarze 2146: mandoc_msg(MANDOCERR_STR_UNDEF,
2147: ln, (int)(iname - buf->buf),
1.93 schwarze 2148: "%.*s", (int)namesz, iname);
2149: namesz = 0;
2150: } else
2151: namesz = strlen(name);
2152: } else
2153: name = iname;
2154:
1.86 schwarze 2155: if (namesz)
2156: r->last->end = mandoc_strndup(name, namesz);
1.2 schwarze 2157:
1.110 schwarze 2158: if (*cp != '\0')
1.222 schwarze 2159: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.167 schwarze 2160: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.1 schwarze 2161:
1.149 schwarze 2162: return ROFF_IGN;
1.1 schwarze 2163: }
2164:
1.212 schwarze 2165: static int
1.2 schwarze 2166: roff_block_sub(ROFF_ARGS)
1.1 schwarze 2167: {
1.166 schwarze 2168: enum roff_tok t;
1.2 schwarze 2169: int i, j;
2170:
2171: /*
2172: * First check whether a custom macro exists at this level. If
2173: * it does, then check against it. This is some of groff's
2174: * stranger behaviours. If we encountered a custom end-scope
2175: * tag and that tag also happens to be a "real" macro, then we
2176: * need to try interpreting it again as a real macro. If it's
2177: * not, then return ignore. Else continue.
2178: */
2179:
2180: if (r->last->end) {
1.35 schwarze 2181: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.110 schwarze 2182: if (buf->buf[i] != r->last->end[j])
1.2 schwarze 2183: break;
1.1 schwarze 2184:
1.110 schwarze 2185: if (r->last->end[j] == '\0' &&
2186: (buf->buf[i] == '\0' ||
2187: buf->buf[i] == ' ' ||
2188: buf->buf[i] == '\t')) {
1.2 schwarze 2189: roffnode_pop(r);
2190: roffnode_cleanscope(r);
1.1 schwarze 2191:
1.110 schwarze 2192: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.35 schwarze 2193: i++;
2194:
2195: pos = i;
1.110 schwarze 2196: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.166 schwarze 2197: TOKEN_NONE)
1.149 schwarze 2198: return ROFF_RERUN;
2199: return ROFF_IGN;
1.2 schwarze 2200: }
1.1 schwarze 2201: }
2202:
1.2 schwarze 2203: /*
2204: * If we have no custom end-query or lookup failed, then try
2205: * pulling it out of the hashtable.
2206: */
1.1 schwarze 2207:
1.110 schwarze 2208: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.1 schwarze 2209:
1.110 schwarze 2210: if (t != ROFF_cblock) {
2211: if (tok != ROFF_ig)
2212: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.149 schwarze 2213: return ROFF_IGN;
1.16 schwarze 2214: }
1.1 schwarze 2215:
1.149 schwarze 2216: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 2217: }
2218:
1.212 schwarze 2219: static int
1.2 schwarze 2220: roff_block_text(ROFF_ARGS)
2221: {
2222:
1.110 schwarze 2223: if (tok != ROFF_ig)
2224: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.16 schwarze 2225:
1.149 schwarze 2226: return ROFF_IGN;
1.2 schwarze 2227: }
2228:
1.212 schwarze 2229: static int
1.2 schwarze 2230: roff_cond_sub(ROFF_ARGS)
2231: {
1.212 schwarze 2232: char *ep;
2233: int endloop, irc, rr;
1.166 schwarze 2234: enum roff_tok t;
1.2 schwarze 2235:
1.212 schwarze 2236: irc = ROFF_IGN;
1.2 schwarze 2237: rr = r->last->rule;
1.212 schwarze 2238: endloop = tok != ROFF_while ? ROFF_IGN :
2239: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2240: if (roffnode_cleanscope(r))
2241: irc |= endloop;
1.39 schwarze 2242:
1.69 schwarze 2243: /*
2244: * If `\}' occurs on a macro line without a preceding macro,
2245: * drop the line completely.
2246: */
2247:
1.110 schwarze 2248: ep = buf->buf + pos;
2249: if (ep[0] == '\\' && ep[1] == '}')
1.71 schwarze 2250: rr = 0;
1.69 schwarze 2251:
1.215 schwarze 2252: /*
2253: * The closing delimiter `\}' rewinds the conditional scope
2254: * but is otherwise ignored when interpreting the line.
2255: */
1.39 schwarze 2256:
1.110 schwarze 2257: while ((ep = strchr(ep, '\\')) != NULL) {
1.190 schwarze 2258: switch (ep[1]) {
2259: case '}':
2260: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1.212 schwarze 2261: if (roff_ccond(r, ln, ep - buf->buf))
2262: irc |= endloop;
1.190 schwarze 2263: break;
2264: case '\0':
2265: ++ep;
2266: break;
2267: default:
2268: ep += 2;
2269: break;
1.70 schwarze 2270: }
1.50 schwarze 2271: }
1.190 schwarze 2272:
2273: /*
2274: * Fully handle known macros when they are structurally
2275: * required or when the conditional evaluated to true.
2276: */
2277:
2278: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.212 schwarze 2279: irc |= t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT) ?
2280: (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs) :
2281: rr ? ROFF_CONT : ROFF_IGN;
2282: return irc;
1.2 schwarze 2283: }
2284:
1.212 schwarze 2285: static int
1.2 schwarze 2286: roff_cond_text(ROFF_ARGS)
2287: {
1.37 schwarze 2288: char *ep;
1.212 schwarze 2289: int endloop, irc, rr;
1.2 schwarze 2290:
1.212 schwarze 2291: irc = ROFF_IGN;
1.2 schwarze 2292: rr = r->last->rule;
1.212 schwarze 2293: endloop = tok != ROFF_while ? ROFF_IGN :
2294: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2295: if (roffnode_cleanscope(r))
2296: irc |= endloop;
1.1 schwarze 2297:
1.215 schwarze 2298: /*
2299: * If `\}' occurs on a text line with neither preceding
2300: * nor following characters, drop the line completely.
2301: */
2302:
1.110 schwarze 2303: ep = buf->buf + pos;
1.215 schwarze 2304: if (strcmp(ep, "\\}") == 0)
2305: rr = 0;
2306:
2307: /*
2308: * The closing delimiter `\}' rewinds the conditional scope
2309: * but is otherwise ignored when interpreting the line.
2310: */
2311:
1.110 schwarze 2312: while ((ep = strchr(ep, '\\')) != NULL) {
1.215 schwarze 2313: switch (ep[1]) {
2314: case '}':
2315: memmove(ep, ep + 2, strlen(ep + 2) + 1);
2316: if (roff_ccond(r, ln, ep - buf->buf))
1.212 schwarze 2317: irc |= endloop;
1.215 schwarze 2318: break;
2319: case '\0':
2320: ++ep;
2321: break;
2322: default:
2323: ep += 2;
2324: break;
1.70 schwarze 2325: }
1.2 schwarze 2326: }
1.212 schwarze 2327: if (rr)
2328: irc |= ROFF_CONT;
2329: return irc;
1.2 schwarze 2330: }
2331:
1.138 schwarze 2332: /* --- handling of numeric and conditional expressions -------------------- */
2333:
1.77 schwarze 2334: /*
2335: * Parse a single signed integer number. Stop at the first non-digit.
2336: * If there is at least one digit, return success and advance the
2337: * parse point, else return failure and let the parse point unchanged.
2338: * Ignore overflows, treat them just like the C language.
2339: */
1.56 schwarze 2340: static int
1.133 schwarze 2341: roff_getnum(const char *v, int *pos, int *res, int flags)
1.56 schwarze 2342: {
1.133 schwarze 2343: int myres, scaled, n, p;
1.79 schwarze 2344:
2345: if (NULL == res)
2346: res = &myres;
1.56 schwarze 2347:
2348: p = *pos;
2349: n = v[p] == '-';
1.133 schwarze 2350: if (n || v[p] == '+')
1.56 schwarze 2351: p++;
2352:
1.133 schwarze 2353: if (flags & ROFFNUM_WHITE)
2354: while (isspace((unsigned char)v[p]))
2355: p++;
2356:
1.56 schwarze 2357: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.77 schwarze 2358: *res = 10 * *res + v[p] - '0';
1.56 schwarze 2359: if (p == *pos + n)
2360: return 0;
2361:
2362: if (n)
2363: *res = -*res;
2364:
1.126 schwarze 2365: /* Each number may be followed by one optional scaling unit. */
2366:
2367: switch (v[p]) {
2368: case 'f':
1.133 schwarze 2369: scaled = *res * 65536;
1.126 schwarze 2370: break;
2371: case 'i':
1.133 schwarze 2372: scaled = *res * 240;
1.126 schwarze 2373: break;
2374: case 'c':
1.133 schwarze 2375: scaled = *res * 240 / 2.54;
1.126 schwarze 2376: break;
2377: case 'v':
2378: case 'P':
1.133 schwarze 2379: scaled = *res * 40;
1.126 schwarze 2380: break;
2381: case 'm':
2382: case 'n':
1.133 schwarze 2383: scaled = *res * 24;
1.126 schwarze 2384: break;
2385: case 'p':
1.133 schwarze 2386: scaled = *res * 10 / 3;
1.126 schwarze 2387: break;
2388: case 'u':
1.133 schwarze 2389: scaled = *res;
1.126 schwarze 2390: break;
2391: case 'M':
1.133 schwarze 2392: scaled = *res * 6 / 25;
1.126 schwarze 2393: break;
2394: default:
1.133 schwarze 2395: scaled = *res;
1.126 schwarze 2396: p--;
2397: break;
2398: }
1.133 schwarze 2399: if (flags & ROFFNUM_SCALE)
2400: *res = scaled;
1.126 schwarze 2401:
2402: *pos = p + 1;
1.149 schwarze 2403: return 1;
1.56 schwarze 2404: }
2405:
1.71 schwarze 2406: /*
2407: * Evaluate a string comparison condition.
2408: * The first character is the delimiter.
2409: * Succeed if the string up to its second occurrence
2410: * matches the string up to its third occurence.
2411: * Advance the cursor after the third occurrence
2412: * or lacking that, to the end of the line.
2413: */
2414: static int
2415: roff_evalstrcond(const char *v, int *pos)
2416: {
2417: const char *s1, *s2, *s3;
2418: int match;
2419:
2420: match = 0;
2421: s1 = v + *pos; /* initial delimiter */
2422: s2 = s1 + 1; /* for scanning the first string */
2423: s3 = strchr(s2, *s1); /* for scanning the second string */
2424:
2425: if (NULL == s3) /* found no middle delimiter */
2426: goto out;
2427:
2428: while ('\0' != *++s3) {
2429: if (*s2 != *s3) { /* mismatch */
2430: s3 = strchr(s3, *s1);
2431: break;
2432: }
2433: if (*s3 == *s1) { /* found the final delimiter */
2434: match = 1;
2435: break;
2436: }
2437: s2++;
2438: }
2439:
2440: out:
2441: if (NULL == s3)
2442: s3 = strchr(s2, '\0');
1.114 schwarze 2443: else if (*s3 != '\0')
1.71 schwarze 2444: s3++;
2445: *pos = s3 - v;
1.149 schwarze 2446: return match;
1.71 schwarze 2447: }
2448:
1.77 schwarze 2449: /*
2450: * Evaluate an optionally negated single character, numerical,
2451: * or string condition.
2452: */
1.71 schwarze 2453: static int
1.143 schwarze 2454: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.5 schwarze 2455: {
1.208 schwarze 2456: const char *start, *end;
2457: char *cp, *name;
2458: size_t sz;
2459: int deftype, len, number, savepos, istrue, wanttrue;
1.5 schwarze 2460:
1.71 schwarze 2461: if ('!' == v[*pos]) {
2462: wanttrue = 0;
2463: (*pos)++;
2464: } else
2465: wanttrue = 1;
2466:
1.5 schwarze 2467: switch (v[*pos]) {
1.112 schwarze 2468: case '\0':
1.149 schwarze 2469: return 0;
1.80 schwarze 2470: case 'n':
2471: case 'o':
1.5 schwarze 2472: (*pos)++;
1.149 schwarze 2473: return wanttrue;
1.80 schwarze 2474: case 'e':
2475: case 't':
1.111 schwarze 2476: case 'v':
1.5 schwarze 2477: (*pos)++;
1.149 schwarze 2478: return !wanttrue;
1.208 schwarze 2479: case 'c':
2480: do {
2481: (*pos)++;
2482: } while (v[*pos] == ' ');
2483:
2484: /*
2485: * Quirk for groff compatibility:
2486: * The horizontal tab is neither available nor unavailable.
2487: */
2488:
2489: if (v[*pos] == '\t') {
2490: (*pos)++;
2491: return 0;
2492: }
2493:
2494: /* Printable ASCII characters are available. */
2495:
2496: if (v[*pos] != '\\') {
2497: (*pos)++;
2498: return wanttrue;
2499: }
2500:
2501: end = v + ++*pos;
2502: switch (mandoc_escape(&end, &start, &len)) {
2503: case ESCAPE_SPECIAL:
2504: istrue = mchars_spec2cp(start, len) != -1;
2505: break;
2506: case ESCAPE_UNICODE:
2507: istrue = 1;
2508: break;
2509: case ESCAPE_NUMBERED:
2510: istrue = mchars_num2char(start, len) != -1;
2511: break;
2512: default:
2513: istrue = !wanttrue;
2514: break;
2515: }
2516: *pos = end - v;
2517: return istrue == wanttrue;
1.182 schwarze 2518: case 'd':
1.143 schwarze 2519: case 'r':
1.182 schwarze 2520: cp = v + *pos + 1;
2521: while (*cp == ' ')
2522: cp++;
2523: name = cp;
2524: sz = roff_getname(r, &cp, ln, cp - v);
1.187 schwarze 2525: if (sz == 0)
2526: istrue = 0;
2527: else if (v[*pos] == 'r')
2528: istrue = roff_hasregn(r, name, sz);
2529: else {
2530: deftype = ROFFDEF_ANY;
2531: roff_getstrn(r, name, sz, &deftype);
2532: istrue = !!deftype;
2533: }
1.143 schwarze 2534: *pos = cp - v;
1.182 schwarze 2535: return istrue == wanttrue;
1.5 schwarze 2536: default:
2537: break;
2538: }
2539:
1.113 schwarze 2540: savepos = *pos;
1.133 schwarze 2541: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.149 schwarze 2542: return (number > 0) == wanttrue;
1.113 schwarze 2543: else if (*pos == savepos)
1.149 schwarze 2544: return roff_evalstrcond(v, pos) == wanttrue;
1.77 schwarze 2545: else
1.149 schwarze 2546: return 0;
1.5 schwarze 2547: }
2548:
1.212 schwarze 2549: static int
1.21 schwarze 2550: roff_line_ignore(ROFF_ARGS)
1.6 schwarze 2551: {
1.30 schwarze 2552:
1.149 schwarze 2553: return ROFF_IGN;
1.21 schwarze 2554: }
2555:
1.212 schwarze 2556: static int
1.123 schwarze 2557: roff_insec(ROFF_ARGS)
2558: {
2559:
1.222 schwarze 2560: mandoc_msg(MANDOCERR_REQ_INSEC, ln, ppos, "%s", roff_name[tok]);
1.149 schwarze 2561: return ROFF_IGN;
1.123 schwarze 2562: }
2563:
1.212 schwarze 2564: static int
1.123 schwarze 2565: roff_unsupp(ROFF_ARGS)
2566: {
2567:
1.222 schwarze 2568: mandoc_msg(MANDOCERR_REQ_UNSUPP, ln, ppos, "%s", roff_name[tok]);
1.149 schwarze 2569: return ROFF_IGN;
1.123 schwarze 2570: }
2571:
1.212 schwarze 2572: static int
1.2 schwarze 2573: roff_cond(ROFF_ARGS)
2574: {
1.212 schwarze 2575: int irc;
1.46 schwarze 2576:
2577: roffnode_push(r, tok, NULL, ln, ppos);
1.2 schwarze 2578:
1.80 schwarze 2579: /*
1.35 schwarze 2580: * An `.el' has no conditional body: it will consume the value
2581: * of the current rstack entry set in prior `ie' calls or
1.80 schwarze 2582: * defaults to DENY.
1.35 schwarze 2583: *
2584: * If we're not an `el', however, then evaluate the conditional.
2585: */
1.1 schwarze 2586:
1.110 schwarze 2587: r->last->rule = tok == ROFF_el ?
1.80 schwarze 2588: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.110 schwarze 2589: roff_evalcond(r, ln, buf->buf, &pos);
1.2 schwarze 2590:
1.35 schwarze 2591: /*
2592: * An if-else will put the NEGATION of the current evaluated
2593: * conditional into the stack of rules.
2594: */
2595:
1.110 schwarze 2596: if (tok == ROFF_ie) {
1.96 schwarze 2597: if (r->rstackpos + 1 == r->rstacksz) {
2598: r->rstacksz += 16;
2599: r->rstack = mandoc_reallocarray(r->rstack,
2600: r->rstacksz, sizeof(int));
1.35 schwarze 2601: }
1.71 schwarze 2602: r->rstack[++r->rstackpos] = !r->last->rule;
1.2 schwarze 2603: }
1.5 schwarze 2604:
2605: /* If the parent has false as its rule, then so do we. */
2606:
1.71 schwarze 2607: if (r->last->parent && !r->last->parent->rule)
2608: r->last->rule = 0;
1.5 schwarze 2609:
2610: /*
1.46 schwarze 2611: * Determine scope.
2612: * If there is nothing on the line after the conditional,
2613: * not even whitespace, use next-line scope.
1.212 schwarze 2614: * Except that .while does not support next-line scope.
1.5 schwarze 2615: */
1.2 schwarze 2616:
1.212 schwarze 2617: if (buf->buf[pos] == '\0' && tok != ROFF_while) {
1.46 schwarze 2618: r->last->endspan = 2;
2619: goto out;
2620: }
2621:
1.110 schwarze 2622: while (buf->buf[pos] == ' ')
1.46 schwarze 2623: pos++;
2624:
2625: /* An opening brace requests multiline scope. */
1.2 schwarze 2626:
1.110 schwarze 2627: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.2 schwarze 2628: r->last->endspan = -1;
2629: pos += 2;
1.144 schwarze 2630: while (buf->buf[pos] == ' ')
2631: pos++;
1.46 schwarze 2632: goto out;
1.80 schwarze 2633: }
1.2 schwarze 2634:
2635: /*
1.46 schwarze 2636: * Anything else following the conditional causes
2637: * single-line scope. Warn if the scope contains
2638: * nothing but trailing whitespace.
1.2 schwarze 2639: */
2640:
1.110 schwarze 2641: if (buf->buf[pos] == '\0')
1.222 schwarze 2642: mandoc_msg(MANDOCERR_COND_EMPTY,
2643: ln, ppos, "%s", roff_name[tok]);
1.2 schwarze 2644:
1.46 schwarze 2645: r->last->endspan = 1;
1.1 schwarze 2646:
1.46 schwarze 2647: out:
1.2 schwarze 2648: *offs = pos;
1.212 schwarze 2649: irc = ROFF_RERUN;
2650: if (tok == ROFF_while)
2651: irc |= ROFF_WHILE;
2652: return irc;
1.1 schwarze 2653: }
2654:
1.212 schwarze 2655: static int
1.7 schwarze 2656: roff_ds(ROFF_ARGS)
2657: {
1.85 schwarze 2658: char *string;
2659: const char *name;
2660: size_t namesz;
1.10 schwarze 2661:
1.123 schwarze 2662: /* Ignore groff compatibility mode for now. */
2663:
2664: if (tok == ROFF_ds1)
2665: tok = ROFF_ds;
2666: else if (tok == ROFF_as1)
2667: tok = ROFF_as;
2668:
1.10 schwarze 2669: /*
1.85 schwarze 2670: * The first word is the name of the string.
2671: * If it is empty or terminated by an escape sequence,
2672: * abort the `ds' request without defining anything.
1.10 schwarze 2673: */
1.7 schwarze 2674:
1.110 schwarze 2675: name = string = buf->buf + pos;
2676: if (*name == '\0')
1.149 schwarze 2677: return ROFF_IGN;
1.7 schwarze 2678:
1.85 schwarze 2679: namesz = roff_getname(r, &string, ln, pos);
1.110 schwarze 2680: if (name[namesz] == '\\')
1.149 schwarze 2681: return ROFF_IGN;
1.85 schwarze 2682:
2683: /* Read past the initial double-quote, if any. */
1.110 schwarze 2684: if (*string == '"')
1.7 schwarze 2685: string++;
2686:
1.10 schwarze 2687: /* The rest is the value. */
1.85 schwarze 2688: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2689: ROFF_as == tok);
1.183 schwarze 2690: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.149 schwarze 2691: return ROFF_IGN;
1.7 schwarze 2692: }
2693:
1.77 schwarze 2694: /*
2695: * Parse a single operator, one or two characters long.
2696: * If the operator is recognized, return success and advance the
2697: * parse point, else return failure and let the parse point unchanged.
2698: */
2699: static int
2700: roff_getop(const char *v, int *pos, char *res)
2701: {
2702:
2703: *res = v[*pos];
2704:
2705: switch (*res) {
1.80 schwarze 2706: case '+':
2707: case '-':
2708: case '*':
2709: case '/':
2710: case '%':
2711: case '&':
2712: case ':':
1.77 schwarze 2713: break;
2714: case '<':
2715: switch (v[*pos + 1]) {
1.80 schwarze 2716: case '=':
1.77 schwarze 2717: *res = 'l';
2718: (*pos)++;
2719: break;
1.80 schwarze 2720: case '>':
1.77 schwarze 2721: *res = '!';
2722: (*pos)++;
2723: break;
1.80 schwarze 2724: case '?':
1.77 schwarze 2725: *res = 'i';
2726: (*pos)++;
2727: break;
2728: default:
2729: break;
2730: }
2731: break;
2732: case '>':
2733: switch (v[*pos + 1]) {
1.80 schwarze 2734: case '=':
1.77 schwarze 2735: *res = 'g';
2736: (*pos)++;
2737: break;
1.80 schwarze 2738: case '?':
1.77 schwarze 2739: *res = 'a';
2740: (*pos)++;
2741: break;
2742: default:
2743: break;
2744: }
2745: break;
2746: case '=':
2747: if ('=' == v[*pos + 1])
2748: (*pos)++;
2749: break;
2750: default:
1.149 schwarze 2751: return 0;
1.77 schwarze 2752: }
2753: (*pos)++;
2754:
1.149 schwarze 2755: return *res;
1.77 schwarze 2756: }
2757:
2758: /*
2759: * Evaluate either a parenthesized numeric expression
2760: * or a single signed integer number.
2761: */
2762: static int
1.106 schwarze 2763: roff_evalpar(struct roff *r, int ln,
1.133 schwarze 2764: const char *v, int *pos, int *res, int flags)
1.77 schwarze 2765: {
2766:
2767: if ('(' != v[*pos])
1.149 schwarze 2768: return roff_getnum(v, pos, res, flags);
1.77 schwarze 2769:
2770: (*pos)++;
1.133 schwarze 2771: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.149 schwarze 2772: return 0;
1.77 schwarze 2773:
1.79 schwarze 2774: /*
2775: * Omission of the closing parenthesis
2776: * is an error in validation mode,
2777: * but ignored in evaluation mode.
2778: */
2779:
1.77 schwarze 2780: if (')' == v[*pos])
2781: (*pos)++;
1.79 schwarze 2782: else if (NULL == res)
1.149 schwarze 2783: return 0;
1.77 schwarze 2784:
1.149 schwarze 2785: return 1;
1.77 schwarze 2786: }
2787:
2788: /*
2789: * Evaluate a complete numeric expression.
2790: * Proceed left to right, there is no concept of precedence.
2791: */
2792: static int
1.106 schwarze 2793: roff_evalnum(struct roff *r, int ln, const char *v,
1.133 schwarze 2794: int *pos, int *res, int flags)
1.77 schwarze 2795: {
2796: int mypos, operand2;
2797: char operator;
2798:
2799: if (NULL == pos) {
2800: mypos = 0;
2801: pos = &mypos;
2802: }
2803:
1.133 schwarze 2804: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2805: while (isspace((unsigned char)v[*pos]))
2806: (*pos)++;
2807:
1.133 schwarze 2808: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.149 schwarze 2809: return 0;
1.77 schwarze 2810:
2811: while (1) {
1.133 schwarze 2812: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2813: while (isspace((unsigned char)v[*pos]))
2814: (*pos)++;
2815:
2816: if ( ! roff_getop(v, pos, &operator))
2817: break;
2818:
1.133 schwarze 2819: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2820: while (isspace((unsigned char)v[*pos]))
2821: (*pos)++;
2822:
1.133 schwarze 2823: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.149 schwarze 2824: return 0;
1.77 schwarze 2825:
1.133 schwarze 2826: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2827: while (isspace((unsigned char)v[*pos]))
2828: (*pos)++;
1.79 schwarze 2829:
2830: if (NULL == res)
2831: continue;
1.77 schwarze 2832:
2833: switch (operator) {
1.80 schwarze 2834: case '+':
1.77 schwarze 2835: *res += operand2;
2836: break;
1.80 schwarze 2837: case '-':
1.77 schwarze 2838: *res -= operand2;
2839: break;
1.80 schwarze 2840: case '*':
1.77 schwarze 2841: *res *= operand2;
2842: break;
1.80 schwarze 2843: case '/':
1.116 schwarze 2844: if (operand2 == 0) {
1.106 schwarze 2845: mandoc_msg(MANDOCERR_DIVZERO,
1.222 schwarze 2846: ln, *pos, "%s", v);
1.106 schwarze 2847: *res = 0;
2848: break;
2849: }
1.77 schwarze 2850: *res /= operand2;
2851: break;
1.80 schwarze 2852: case '%':
1.116 schwarze 2853: if (operand2 == 0) {
2854: mandoc_msg(MANDOCERR_DIVZERO,
1.222 schwarze 2855: ln, *pos, "%s", v);
1.116 schwarze 2856: *res = 0;
2857: break;
2858: }
1.77 schwarze 2859: *res %= operand2;
2860: break;
1.80 schwarze 2861: case '<':
1.77 schwarze 2862: *res = *res < operand2;
2863: break;
1.80 schwarze 2864: case '>':
1.77 schwarze 2865: *res = *res > operand2;
2866: break;
1.80 schwarze 2867: case 'l':
1.77 schwarze 2868: *res = *res <= operand2;
2869: break;
1.80 schwarze 2870: case 'g':
1.77 schwarze 2871: *res = *res >= operand2;
2872: break;
1.80 schwarze 2873: case '=':
1.77 schwarze 2874: *res = *res == operand2;
2875: break;
1.80 schwarze 2876: case '!':
1.77 schwarze 2877: *res = *res != operand2;
2878: break;
1.80 schwarze 2879: case '&':
1.77 schwarze 2880: *res = *res && operand2;
2881: break;
1.80 schwarze 2882: case ':':
1.77 schwarze 2883: *res = *res || operand2;
2884: break;
1.80 schwarze 2885: case 'i':
1.77 schwarze 2886: if (operand2 < *res)
2887: *res = operand2;
2888: break;
1.80 schwarze 2889: case 'a':
1.77 schwarze 2890: if (operand2 > *res)
2891: *res = operand2;
2892: break;
2893: default:
2894: abort();
2895: }
2896: }
1.149 schwarze 2897: return 1;
1.77 schwarze 2898: }
2899:
1.138 schwarze 2900: /* --- register management ------------------------------------------------ */
2901:
1.52 schwarze 2902: void
1.60 schwarze 2903: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.41 schwarze 2904: {
1.199 schwarze 2905: roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
1.198 schwarze 2906: }
2907:
2908: static void
2909: roff_setregn(struct roff *r, const char *name, size_t len,
1.199 schwarze 2910: int val, char sign, int step)
1.198 schwarze 2911: {
1.52 schwarze 2912: struct roffreg *reg;
2913:
2914: /* Search for an existing register with the same name. */
2915: reg = r->regtab;
2916:
1.198 schwarze 2917: while (reg != NULL && (reg->key.sz != len ||
2918: strncmp(reg->key.p, name, len) != 0))
1.52 schwarze 2919: reg = reg->next;
1.41 schwarze 2920:
1.52 schwarze 2921: if (NULL == reg) {
2922: /* Create a new register. */
2923: reg = mandoc_malloc(sizeof(struct roffreg));
1.198 schwarze 2924: reg->key.p = mandoc_strndup(name, len);
2925: reg->key.sz = len;
1.60 schwarze 2926: reg->val = 0;
1.199 schwarze 2927: reg->step = 0;
1.52 schwarze 2928: reg->next = r->regtab;
2929: r->regtab = reg;
2930: }
2931:
1.60 schwarze 2932: if ('+' == sign)
2933: reg->val += val;
2934: else if ('-' == sign)
2935: reg->val -= val;
2936: else
2937: reg->val = val;
1.199 schwarze 2938: if (step != INT_MIN)
2939: reg->step = step;
1.41 schwarze 2940: }
2941:
1.65 schwarze 2942: /*
2943: * Handle some predefined read-only number registers.
2944: * For now, return -1 if the requested register is not predefined;
2945: * in case a predefined read-only register having the value -1
2946: * were to turn up, another special value would have to be chosen.
2947: */
2948: static int
1.145 schwarze 2949: roff_getregro(const struct roff *r, const char *name)
1.65 schwarze 2950: {
2951:
2952: switch (*name) {
1.145 schwarze 2953: case '$': /* Number of arguments of the last macro evaluated. */
1.211 schwarze 2954: return r->mstackpos < 0 ? 0 : r->mstack[r->mstackpos].argc;
1.80 schwarze 2955: case 'A': /* ASCII approximation mode is always off. */
1.149 schwarze 2956: return 0;
1.80 schwarze 2957: case 'g': /* Groff compatibility mode is always on. */
1.149 schwarze 2958: return 1;
1.80 schwarze 2959: case 'H': /* Fixed horizontal resolution. */
1.149 schwarze 2960: return 24;
1.80 schwarze 2961: case 'j': /* Always adjust left margin only. */
1.149 schwarze 2962: return 0;
1.80 schwarze 2963: case 'T': /* Some output device is always defined. */
1.149 schwarze 2964: return 1;
1.80 schwarze 2965: case 'V': /* Fixed vertical resolution. */
1.149 schwarze 2966: return 40;
1.65 schwarze 2967: default:
1.149 schwarze 2968: return -1;
1.65 schwarze 2969: }
2970: }
2971:
1.53 schwarze 2972: int
1.198 schwarze 2973: roff_getreg(struct roff *r, const char *name)
1.41 schwarze 2974: {
1.199 schwarze 2975: return roff_getregn(r, name, strlen(name), '\0');
1.53 schwarze 2976: }
2977:
2978: static int
1.199 schwarze 2979: roff_getregn(struct roff *r, const char *name, size_t len, char sign)
1.53 schwarze 2980: {
2981: struct roffreg *reg;
1.65 schwarze 2982: int val;
2983:
2984: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2985: val = roff_getregro(r, name + 1);
1.65 schwarze 2986: if (-1 != val)
1.149 schwarze 2987: return val;
1.65 schwarze 2988: }
1.53 schwarze 2989:
1.199 schwarze 2990: for (reg = r->regtab; reg; reg = reg->next) {
1.53 schwarze 2991: if (len == reg->key.sz &&
1.199 schwarze 2992: 0 == strncmp(name, reg->key.p, len)) {
2993: switch (sign) {
2994: case '+':
2995: reg->val += reg->step;
2996: break;
2997: case '-':
2998: reg->val -= reg->step;
2999: break;
3000: default:
3001: break;
3002: }
1.149 schwarze 3003: return reg->val;
1.199 schwarze 3004: }
3005: }
1.143 schwarze 3006:
1.199 schwarze 3007: roff_setregn(r, name, len, 0, '\0', INT_MIN);
1.149 schwarze 3008: return 0;
1.143 schwarze 3009: }
3010:
3011: static int
3012: roff_hasregn(const struct roff *r, const char *name, size_t len)
3013: {
3014: struct roffreg *reg;
3015: int val;
3016:
3017: if ('.' == name[0] && 2 == len) {
1.145 schwarze 3018: val = roff_getregro(r, name + 1);
1.143 schwarze 3019: if (-1 != val)
1.149 schwarze 3020: return 1;
1.143 schwarze 3021: }
3022:
3023: for (reg = r->regtab; reg; reg = reg->next)
3024: if (len == reg->key.sz &&
3025: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 3026: return 1;
1.41 schwarze 3027:
1.149 schwarze 3028: return 0;
1.41 schwarze 3029: }
3030:
1.52 schwarze 3031: static void
3032: roff_freereg(struct roffreg *reg)
1.41 schwarze 3033: {
1.52 schwarze 3034: struct roffreg *old_reg;
1.41 schwarze 3035:
1.52 schwarze 3036: while (NULL != reg) {
3037: free(reg->key.p);
3038: old_reg = reg;
3039: reg = reg->next;
3040: free(old_reg);
3041: }
1.41 schwarze 3042: }
1.7 schwarze 3043:
1.212 schwarze 3044: static int
1.6 schwarze 3045: roff_nr(ROFF_ARGS)
1.1 schwarze 3046: {
1.199 schwarze 3047: char *key, *val, *step;
1.85 schwarze 3048: size_t keysz;
1.199 schwarze 3049: int iv, is, len;
1.60 schwarze 3050: char sign;
1.6 schwarze 3051:
1.110 schwarze 3052: key = val = buf->buf + pos;
3053: if (*key == '\0')
1.149 schwarze 3054: return ROFF_IGN;
1.85 schwarze 3055:
3056: keysz = roff_getname(r, &val, ln, pos);
1.110 schwarze 3057: if (key[keysz] == '\\')
1.149 schwarze 3058: return ROFF_IGN;
1.6 schwarze 3059:
1.60 schwarze 3060: sign = *val;
1.110 schwarze 3061: if (sign == '+' || sign == '-')
1.60 schwarze 3062: val++;
3063:
1.199 schwarze 3064: len = 0;
3065: if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
3066: return ROFF_IGN;
3067:
3068: step = val + len;
3069: while (isspace((unsigned char)*step))
3070: step++;
3071: if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)
3072: is = INT_MIN;
1.1 schwarze 3073:
1.199 schwarze 3074: roff_setregn(r, key, keysz, iv, sign, is);
1.149 schwarze 3075: return ROFF_IGN;
1.76 schwarze 3076: }
3077:
1.212 schwarze 3078: static int
1.76 schwarze 3079: roff_rr(ROFF_ARGS)
3080: {
3081: struct roffreg *reg, **prev;
1.85 schwarze 3082: char *name, *cp;
3083: size_t namesz;
1.76 schwarze 3084:
1.110 schwarze 3085: name = cp = buf->buf + pos;
3086: if (*name == '\0')
1.149 schwarze 3087: return ROFF_IGN;
1.85 schwarze 3088: namesz = roff_getname(r, &cp, ln, pos);
3089: name[namesz] = '\0';
1.76 schwarze 3090:
3091: prev = &r->regtab;
3092: while (1) {
3093: reg = *prev;
1.110 schwarze 3094: if (reg == NULL || !strcmp(name, reg->key.p))
1.76 schwarze 3095: break;
3096: prev = ®->next;
3097: }
1.110 schwarze 3098: if (reg != NULL) {
1.76 schwarze 3099: *prev = reg->next;
3100: free(reg->key.p);
3101: free(reg);
3102: }
1.149 schwarze 3103: return ROFF_IGN;
1.29 schwarze 3104: }
3105:
1.138 schwarze 3106: /* --- handler functions for roff requests -------------------------------- */
3107:
1.212 schwarze 3108: static int
1.29 schwarze 3109: roff_rm(ROFF_ARGS)
3110: {
3111: const char *name;
3112: char *cp;
1.85 schwarze 3113: size_t namesz;
1.29 schwarze 3114:
1.110 schwarze 3115: cp = buf->buf + pos;
3116: while (*cp != '\0') {
1.85 schwarze 3117: name = cp;
1.110 schwarze 3118: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.85 schwarze 3119: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.183 schwarze 3120: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.110 schwarze 3121: if (name[namesz] == '\\')
1.85 schwarze 3122: break;
1.29 schwarze 3123: }
1.149 schwarze 3124: return ROFF_IGN;
1.51 schwarze 3125: }
3126:
1.212 schwarze 3127: static int
1.51 schwarze 3128: roff_it(ROFF_ARGS)
3129: {
3130: int iv;
3131:
3132: /* Parse the number of lines. */
1.133 schwarze 3133:
3134: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.222 schwarze 3135: mandoc_msg(MANDOCERR_IT_NONUM,
3136: ln, ppos, "%s", buf->buf + 1);
1.149 schwarze 3137: return ROFF_IGN;
1.51 schwarze 3138: }
3139:
1.134 schwarze 3140: while (isspace((unsigned char)buf->buf[pos]))
3141: pos++;
3142:
3143: /*
3144: * Arm the input line trap.
3145: * Special-casing "an-trap" is an ugly workaround to cope
3146: * with DocBook stupidly fiddling with man(7) internals.
3147: */
1.133 schwarze 3148:
1.51 schwarze 3149: roffit_lines = iv;
1.134 schwarze 3150: roffit_macro = mandoc_strdup(iv != 1 ||
3151: strcmp(buf->buf + pos, "an-trap") ?
3152: buf->buf + pos : "br");
1.149 schwarze 3153: return ROFF_IGN;
1.47 schwarze 3154: }
3155:
1.212 schwarze 3156: static int
1.47 schwarze 3157: roff_Dd(ROFF_ARGS)
3158: {
1.187 schwarze 3159: int mask;
3160: enum roff_tok t, te;
1.99 schwarze 3161:
1.187 schwarze 3162: switch (tok) {
3163: case ROFF_Dd:
3164: tok = MDOC_Dd;
3165: te = MDOC_MAX;
3166: if (r->format == 0)
3167: r->format = MPARSE_MDOC;
3168: mask = MPARSE_MDOC | MPARSE_QUICK;
3169: break;
3170: case ROFF_TH:
3171: tok = MAN_TH;
3172: te = MAN_MAX;
3173: if (r->format == 0)
3174: r->format = MPARSE_MAN;
3175: mask = MPARSE_QUICK;
3176: break;
3177: default:
3178: abort();
3179: }
3180: if ((r->options & mask) == 0)
3181: for (t = tok; t < te; t++)
3182: roff_setstr(r, roff_name[t], NULL, 0);
1.149 schwarze 3183: return ROFF_CONT;
1.14 schwarze 3184: }
3185:
1.212 schwarze 3186: static int
1.27 schwarze 3187: roff_TE(ROFF_ARGS)
3188: {
1.193 schwarze 3189: if (r->tbl == NULL) {
1.222 schwarze 3190: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "TE");
1.193 schwarze 3191: return ROFF_IGN;
3192: }
1.218 schwarze 3193: if (tbl_end(r->tbl, 0) == 0) {
1.193 schwarze 3194: r->tbl = NULL;
1.130 schwarze 3195: free(buf->buf);
3196: buf->buf = mandoc_strdup(".sp");
3197: buf->sz = 4;
1.201 schwarze 3198: *offs = 0;
1.149 schwarze 3199: return ROFF_REPARSE;
1.130 schwarze 3200: }
1.193 schwarze 3201: r->tbl = NULL;
1.149 schwarze 3202: return ROFF_IGN;
1.27 schwarze 3203: }
3204:
1.212 schwarze 3205: static int
1.27 schwarze 3206: roff_T_(ROFF_ARGS)
3207: {
3208:
3209: if (NULL == r->tbl)
1.222 schwarze 3210: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "T&");
1.27 schwarze 3211: else
1.168 schwarze 3212: tbl_restart(ln, ppos, r->tbl);
1.27 schwarze 3213:
1.149 schwarze 3214: return ROFF_IGN;
1.27 schwarze 3215: }
3216:
1.102 schwarze 3217: /*
3218: * Handle in-line equation delimiters.
3219: */
1.212 schwarze 3220: static int
1.110 schwarze 3221: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.41 schwarze 3222: {
1.105 schwarze 3223: char *cp1, *cp2;
3224: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.41 schwarze 3225:
1.102 schwarze 3226: /*
3227: * Outside equations, look for an opening delimiter.
3228: * If we are inside an equation, we already know it is
3229: * in-line, or this function wouldn't have been called;
3230: * so look for a closing delimiter.
3231: */
3232:
1.110 schwarze 3233: cp1 = buf->buf + pos;
1.102 schwarze 3234: cp2 = strchr(cp1, r->eqn == NULL ?
3235: r->last_eqn->odelim : r->last_eqn->cdelim);
3236: if (cp2 == NULL)
1.149 schwarze 3237: return ROFF_CONT;
1.102 schwarze 3238:
1.105 schwarze 3239: *cp2++ = '\0';
3240: bef_pr = bef_nl = aft_nl = aft_pr = "";
3241:
3242: /* Handle preceding text, protecting whitespace. */
3243:
1.110 schwarze 3244: if (*buf->buf != '\0') {
1.105 schwarze 3245: if (r->eqn == NULL)
3246: bef_pr = "\\&";
3247: bef_nl = "\n";
3248: }
3249:
3250: /*
3251: * Prepare replacing the delimiter with an equation macro
3252: * and drop leading white space from the equation.
3253: */
1.102 schwarze 3254:
1.105 schwarze 3255: if (r->eqn == NULL) {
3256: while (*cp2 == ' ')
3257: cp2++;
3258: mac = ".EQ";
3259: } else
3260: mac = ".EN";
3261:
3262: /* Handle following text, protecting whitespace. */
3263:
3264: if (*cp2 != '\0') {
3265: aft_nl = "\n";
3266: if (r->eqn != NULL)
3267: aft_pr = "\\&";
3268: }
3269:
3270: /* Do the actual replacement. */
3271:
1.110 schwarze 3272: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.105 schwarze 3273: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.110 schwarze 3274: free(buf->buf);
3275: buf->buf = cp1;
1.102 schwarze 3276:
3277: /* Toggle the in-line state of the eqn subsystem. */
3278:
3279: r->eqn_inline = r->eqn == NULL;
1.149 schwarze 3280: return ROFF_REPARSE;
1.41 schwarze 3281: }
3282:
1.212 schwarze 3283: static int
1.107 schwarze 3284: roff_EQ(ROFF_ARGS)
1.32 schwarze 3285: {
1.191 schwarze 3286: struct roff_node *n;
3287:
1.228 schwarze 3288: if (r->man->meta.macroset == MACROSET_MAN)
1.194 schwarze 3289: man_breakscope(r->man, ROFF_EQ);
1.191 schwarze 3290: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
3291: if (ln > r->man->last->line)
3292: n->flags |= NODE_LINE;
1.220 schwarze 3293: n->eqn = eqn_box_new();
1.191 schwarze 3294: roff_node_append(r->man, n);
3295: r->man->next = ROFF_NEXT_SIBLING;
1.32 schwarze 3296:
1.110 schwarze 3297: assert(r->eqn == NULL);
1.191 schwarze 3298: if (r->last_eqn == NULL)
1.223 schwarze 3299: r->last_eqn = eqn_alloc();
1.191 schwarze 3300: else
3301: eqn_reset(r->last_eqn);
3302: r->eqn = r->last_eqn;
3303: r->eqn->node = n;
1.41 schwarze 3304:
1.110 schwarze 3305: if (buf->buf[pos] != '\0')
1.222 schwarze 3306: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.110 schwarze 3307: ".EQ %s", buf->buf + pos);
1.41 schwarze 3308:
1.149 schwarze 3309: return ROFF_IGN;
1.32 schwarze 3310: }
3311:
1.212 schwarze 3312: static int
1.32 schwarze 3313: roff_EN(ROFF_ARGS)
3314: {
1.191 schwarze 3315: if (r->eqn != NULL) {
3316: eqn_parse(r->eqn);
3317: r->eqn = NULL;
3318: } else
1.222 schwarze 3319: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "EN");
1.191 schwarze 3320: if (buf->buf[pos] != '\0')
1.222 schwarze 3321: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.191 schwarze 3322: "EN %s", buf->buf + pos);
1.149 schwarze 3323: return ROFF_IGN;
1.32 schwarze 3324: }
3325:
1.212 schwarze 3326: static int
1.27 schwarze 3327: roff_TS(ROFF_ARGS)
3328: {
1.193 schwarze 3329: if (r->tbl != NULL) {
1.222 schwarze 3330: mandoc_msg(MANDOCERR_BLK_BROKEN, ln, ppos, "TS breaks TS");
1.218 schwarze 3331: tbl_end(r->tbl, 0);
1.27 schwarze 3332: }
1.223 schwarze 3333: r->tbl = tbl_alloc(ppos, ln, r->last_tbl);
1.218 schwarze 3334: if (r->last_tbl == NULL)
1.193 schwarze 3335: r->first_tbl = r->tbl;
3336: r->last_tbl = r->tbl;
1.169 schwarze 3337: return ROFF_IGN;
3338: }
3339:
1.212 schwarze 3340: static int
1.230 ! schwarze 3341: roff_noarg(ROFF_ARGS)
! 3342: {
! 3343: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
! 3344: man_breakscope(r->man, tok);
! 3345: if (tok == ROFF_brp)
! 3346: tok = ROFF_br;
! 3347: roff_elem_alloc(r->man, ln, ppos, tok);
! 3348: if (buf->buf[pos] != '\0')
! 3349: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
! 3350: "%s %s", roff_name[tok], buf->buf + pos);
! 3351: if (tok == ROFF_nf)
! 3352: r->man->flags |= ROFF_NOFILL;
! 3353: else if (tok == ROFF_fi)
! 3354: r->man->flags &= ~ROFF_NOFILL;
! 3355: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
! 3356: r->man->next = ROFF_NEXT_SIBLING;
! 3357: return ROFF_IGN;
! 3358: }
! 3359:
! 3360: static int
1.169 schwarze 3361: roff_onearg(ROFF_ARGS)
3362: {
3363: struct roff_node *n;
3364: char *cp;
1.177 schwarze 3365: int npos;
1.169 schwarze 3366:
1.174 schwarze 3367: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.192 schwarze 3368: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
3369: tok == ROFF_ti))
1.174 schwarze 3370: man_breakscope(r->man, tok);
3371:
1.181 schwarze 3372: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.177 schwarze 3373: r->man->last = roffce_node;
3374: r->man->next = ROFF_NEXT_SIBLING;
3375: }
3376:
1.169 schwarze 3377: roff_elem_alloc(r->man, ln, ppos, tok);
3378: n = r->man->last;
3379:
3380: cp = buf->buf + pos;
3381: if (*cp != '\0') {
3382: while (*cp != '\0' && *cp != ' ')
3383: cp++;
3384: while (*cp == ' ')
3385: *cp++ = '\0';
3386: if (*cp != '\0')
1.222 schwarze 3387: mandoc_msg(MANDOCERR_ARG_EXCESS,
3388: ln, (int)(cp - buf->buf),
1.169 schwarze 3389: "%s ... %s", roff_name[tok], cp);
3390: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.172 schwarze 3391: }
3392:
1.181 schwarze 3393: if (tok == ROFF_ce || tok == ROFF_rj) {
3394: if (r->man->last->type == ROFFT_ELEM) {
1.177 schwarze 3395: roff_word_alloc(r->man, ln, pos, "1");
3396: r->man->last->flags |= NODE_NOSRC;
3397: }
3398: npos = 0;
3399: if (roff_evalnum(r, ln, r->man->last->string, &npos,
3400: &roffce_lines, 0) == 0) {
1.222 schwarze 3401: mandoc_msg(MANDOCERR_CE_NONUM,
3402: ln, pos, "ce %s", buf->buf + pos);
1.177 schwarze 3403: roffce_lines = 1;
3404: }
3405: if (roffce_lines < 1) {
3406: r->man->last = r->man->last->parent;
3407: roffce_node = NULL;
3408: roffce_lines = 0;
3409: } else
3410: roffce_node = r->man->last->parent;
3411: } else {
3412: n->flags |= NODE_VALID | NODE_ENDED;
3413: r->man->last = n;
3414: }
3415: n->flags |= NODE_LINE;
1.172 schwarze 3416: r->man->next = ROFF_NEXT_SIBLING;
3417: return ROFF_IGN;
3418: }
3419:
1.212 schwarze 3420: static int
1.172 schwarze 3421: roff_manyarg(ROFF_ARGS)
3422: {
3423: struct roff_node *n;
3424: char *sp, *ep;
3425:
3426: roff_elem_alloc(r->man, ln, ppos, tok);
3427: n = r->man->last;
3428:
3429: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3430: while (*ep != '\0' && *ep != ' ')
3431: ep++;
3432: while (*ep == ' ')
3433: *ep++ = '\0';
3434: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.169 schwarze 3435: }
3436:
3437: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3438: r->man->last = n;
3439: r->man->next = ROFF_NEXT_SIBLING;
1.149 schwarze 3440: return ROFF_IGN;
1.123 schwarze 3441: }
3442:
1.212 schwarze 3443: static int
1.183 schwarze 3444: roff_als(ROFF_ARGS)
3445: {
3446: char *oldn, *newn, *end, *value;
3447: size_t oldsz, newsz, valsz;
3448:
3449: newn = oldn = buf->buf + pos;
3450: if (*newn == '\0')
3451: return ROFF_IGN;
3452:
3453: newsz = roff_getname(r, &oldn, ln, pos);
3454: if (newn[newsz] == '\\' || *oldn == '\0')
3455: return ROFF_IGN;
3456:
3457: end = oldn;
3458: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3459: if (oldsz == 0)
3460: return ROFF_IGN;
3461:
1.210 schwarze 3462: valsz = mandoc_asprintf(&value, ".%.*s \\$@\\\"\n",
1.187 schwarze 3463: (int)oldsz, oldn);
1.183 schwarze 3464: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3465: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3466: free(value);
1.168 schwarze 3467: return ROFF_IGN;
1.27 schwarze 3468: }
3469:
1.212 schwarze 3470: static int
1.48 schwarze 3471: roff_cc(ROFF_ARGS)
3472: {
3473: const char *p;
3474:
1.110 schwarze 3475: p = buf->buf + pos;
1.48 schwarze 3476:
1.110 schwarze 3477: if (*p == '\0' || (r->control = *p++) == '.')
1.175 schwarze 3478: r->control = '\0';
1.48 schwarze 3479:
1.110 schwarze 3480: if (*p != '\0')
1.222 schwarze 3481: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.132 schwarze 3482: ln, p - buf->buf, "cc ... %s", p);
1.48 schwarze 3483:
1.213 schwarze 3484: return ROFF_IGN;
3485: }
3486:
3487: static int
3488: roff_char(ROFF_ARGS)
3489: {
3490: const char *p, *kp, *vp;
3491: size_t ksz, vsz;
3492: int font;
3493:
3494: /* Parse the character to be replaced. */
3495:
3496: kp = buf->buf + pos;
3497: p = kp + 1;
3498: if (*kp == '\0' || (*kp == '\\' &&
3499: mandoc_escape(&p, NULL, NULL) != ESCAPE_SPECIAL) ||
3500: (*p != ' ' && *p != '\0')) {
1.222 schwarze 3501: mandoc_msg(MANDOCERR_CHAR_ARG, ln, pos, "char %s", kp);
1.213 schwarze 3502: return ROFF_IGN;
3503: }
3504: ksz = p - kp;
3505: while (*p == ' ')
3506: p++;
3507:
3508: /*
3509: * If the replacement string contains a font escape sequence,
3510: * we have to restore the font at the end.
3511: */
3512:
3513: vp = p;
3514: vsz = strlen(p);
3515: font = 0;
3516: while (*p != '\0') {
3517: if (*p++ != '\\')
3518: continue;
3519: switch (mandoc_escape(&p, NULL, NULL)) {
3520: case ESCAPE_FONT:
3521: case ESCAPE_FONTROMAN:
3522: case ESCAPE_FONTITALIC:
3523: case ESCAPE_FONTBOLD:
3524: case ESCAPE_FONTBI:
1.214 schwarze 3525: case ESCAPE_FONTCW:
1.213 schwarze 3526: case ESCAPE_FONTPREV:
3527: font++;
3528: break;
3529: default:
3530: break;
3531: }
3532: }
3533: if (font > 1)
1.222 schwarze 3534: mandoc_msg(MANDOCERR_CHAR_FONT,
3535: ln, (int)(vp - buf->buf), "%s", vp);
1.213 schwarze 3536:
3537: /*
3538: * Approximate the effect of .char using the .tr tables.
3539: * XXX In groff, .char and .tr interact differently.
3540: */
3541:
3542: if (ksz == 1) {
3543: if (r->xtab == NULL)
3544: r->xtab = mandoc_calloc(128, sizeof(*r->xtab));
3545: assert((unsigned int)*kp < 128);
3546: free(r->xtab[(int)*kp].p);
3547: r->xtab[(int)*kp].sz = mandoc_asprintf(&r->xtab[(int)*kp].p,
3548: "%s%s", vp, font ? "\fP" : "");
3549: } else {
3550: roff_setstrn(&r->xmbtab, kp, ksz, vp, vsz, 0);
3551: if (font)
3552: roff_setstrn(&r->xmbtab, kp, ksz, "\\fP", 3, 1);
3553: }
1.149 schwarze 3554: return ROFF_IGN;
1.48 schwarze 3555: }
3556:
1.212 schwarze 3557: static int
1.175 schwarze 3558: roff_ec(ROFF_ARGS)
3559: {
3560: const char *p;
3561:
3562: p = buf->buf + pos;
3563: if (*p == '\0')
3564: r->escape = '\\';
3565: else {
3566: r->escape = *p;
3567: if (*++p != '\0')
1.222 schwarze 3568: mandoc_msg(MANDOCERR_ARG_EXCESS, ln,
3569: (int)(p - buf->buf), "ec ... %s", p);
1.175 schwarze 3570: }
3571: return ROFF_IGN;
3572: }
3573:
1.212 schwarze 3574: static int
1.175 schwarze 3575: roff_eo(ROFF_ARGS)
3576: {
3577: r->escape = '\0';
3578: if (buf->buf[pos] != '\0')
1.222 schwarze 3579: mandoc_msg(MANDOCERR_ARG_SKIP,
1.175 schwarze 3580: ln, pos, "eo %s", buf->buf + pos);
3581: return ROFF_IGN;
1.202 schwarze 3582: }
3583:
1.212 schwarze 3584: static int
1.202 schwarze 3585: roff_nop(ROFF_ARGS)
3586: {
3587: while (buf->buf[pos] == ' ')
3588: pos++;
3589: *offs = pos;
3590: return ROFF_RERUN;
1.175 schwarze 3591: }
3592:
1.212 schwarze 3593: static int
1.42 schwarze 3594: roff_tr(ROFF_ARGS)
3595: {
3596: const char *p, *first, *second;
3597: size_t fsz, ssz;
3598: enum mandoc_esc esc;
3599:
1.110 schwarze 3600: p = buf->buf + pos;
1.42 schwarze 3601:
1.110 schwarze 3602: if (*p == '\0') {
1.222 schwarze 3603: mandoc_msg(MANDOCERR_REQ_EMPTY, ln, ppos, "tr");
1.149 schwarze 3604: return ROFF_IGN;
1.42 schwarze 3605: }
3606:
1.110 schwarze 3607: while (*p != '\0') {
1.42 schwarze 3608: fsz = ssz = 1;
3609:
3610: first = p++;
1.110 schwarze 3611: if (*first == '\\') {
1.42 schwarze 3612: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3613: if (esc == ESCAPE_ERROR) {
1.222 schwarze 3614: mandoc_msg(MANDOCERR_ESC_BAD, ln,
3615: (int)(p - buf->buf), "%s", first);
1.149 schwarze 3616: return ROFF_IGN;
1.42 schwarze 3617: }
3618: fsz = (size_t)(p - first);
3619: }
3620:
3621: second = p++;
1.110 schwarze 3622: if (*second == '\\') {
1.42 schwarze 3623: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3624: if (esc == ESCAPE_ERROR) {
1.222 schwarze 3625: mandoc_msg(MANDOCERR_ESC_BAD, ln,
3626: (int)(p - buf->buf), "%s", second);
1.149 schwarze 3627: return ROFF_IGN;
1.42 schwarze 3628: }
3629: ssz = (size_t)(p - second);
1.110 schwarze 3630: } else if (*second == '\0') {
1.222 schwarze 3631: mandoc_msg(MANDOCERR_TR_ODD, ln,
3632: (int)(first - buf->buf), "tr %s", first);
1.42 schwarze 3633: second = " ";
3634: p--;
3635: }
3636:
3637: if (fsz > 1) {
1.80 schwarze 3638: roff_setstrn(&r->xmbtab, first, fsz,
3639: second, ssz, 0);
1.42 schwarze 3640: continue;
3641: }
3642:
1.110 schwarze 3643: if (r->xtab == NULL)
1.80 schwarze 3644: r->xtab = mandoc_calloc(128,
3645: sizeof(struct roffstr));
1.42 schwarze 3646:
3647: free(r->xtab[(int)*first].p);
3648: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3649: r->xtab[(int)*first].sz = ssz;
3650: }
3651:
1.149 schwarze 3652: return ROFF_IGN;
1.42 schwarze 3653: }
3654:
1.211 schwarze 3655: /*
3656: * Implementation of the .return request.
3657: * There is no need to call roff_userret() from here.
3658: * The read module will call that after rewinding the reader stack
3659: * to the place from where the current macro was called.
3660: */
1.212 schwarze 3661: static int
1.211 schwarze 3662: roff_return(ROFF_ARGS)
3663: {
3664: if (r->mstackpos >= 0)
1.212 schwarze 3665: return ROFF_IGN | ROFF_USERRET;
1.211 schwarze 3666:
1.222 schwarze 3667: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "return");
1.211 schwarze 3668: return ROFF_IGN;
3669: }
3670:
1.212 schwarze 3671: static int
1.178 schwarze 3672: roff_rn(ROFF_ARGS)
3673: {
3674: const char *value;
3675: char *oldn, *newn, *end;
3676: size_t oldsz, newsz;
1.187 schwarze 3677: int deftype;
1.178 schwarze 3678:
3679: oldn = newn = buf->buf + pos;
3680: if (*oldn == '\0')
3681: return ROFF_IGN;
3682:
3683: oldsz = roff_getname(r, &newn, ln, pos);
3684: if (oldn[oldsz] == '\\' || *newn == '\0')
3685: return ROFF_IGN;
3686:
3687: end = newn;
3688: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3689: if (newsz == 0)
3690: return ROFF_IGN;
3691:
1.187 schwarze 3692: deftype = ROFFDEF_ANY;
3693: value = roff_getstrn(r, oldn, oldsz, &deftype);
3694: switch (deftype) {
3695: case ROFFDEF_USER:
1.178 schwarze 3696: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3697: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3698: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.187 schwarze 3699: break;
3700: case ROFFDEF_PRE:
3701: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3702: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3703: break;
3704: case ROFFDEF_REN:
1.178 schwarze 3705: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3706: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.187 schwarze 3707: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3708: break;
3709: case ROFFDEF_STD:
1.178 schwarze 3710: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.187 schwarze 3711: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3712: break;
3713: default:
3714: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3715: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3716: break;
3717: }
1.178 schwarze 3718: return ROFF_IGN;
3719: }
3720:
1.212 schwarze 3721: static int
1.211 schwarze 3722: roff_shift(ROFF_ARGS)
3723: {
3724: struct mctx *ctx;
3725: int levels, i;
3726:
3727: levels = 1;
3728: if (buf->buf[pos] != '\0' &&
3729: roff_evalnum(r, ln, buf->buf, &pos, &levels, 0) == 0) {
1.222 schwarze 3730: mandoc_msg(MANDOCERR_CE_NONUM,
1.211 schwarze 3731: ln, pos, "shift %s", buf->buf + pos);
3732: levels = 1;
3733: }
3734: if (r->mstackpos < 0) {
1.222 schwarze 3735: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "shift");
1.211 schwarze 3736: return ROFF_IGN;
3737: }
3738: ctx = r->mstack + r->mstackpos;
3739: if (levels > ctx->argc) {
1.222 schwarze 3740: mandoc_msg(MANDOCERR_SHIFT,
1.211 schwarze 3741: ln, pos, "%d, but max is %d", levels, ctx->argc);
3742: levels = ctx->argc;
3743: }
3744: if (levels == 0)
3745: return ROFF_IGN;
3746: for (i = 0; i < levels; i++)
3747: free(ctx->argv[i]);
3748: ctx->argc -= levels;
3749: for (i = 0; i < ctx->argc; i++)
3750: ctx->argv[i] = ctx->argv[i + levels];
3751: return ROFF_IGN;
3752: }
3753:
1.212 schwarze 3754: static int
1.14 schwarze 3755: roff_so(ROFF_ARGS)
3756: {
1.121 schwarze 3757: char *name, *cp;
1.15 schwarze 3758:
1.110 schwarze 3759: name = buf->buf + pos;
1.222 schwarze 3760: mandoc_msg(MANDOCERR_SO, ln, ppos, "so %s", name);
1.14 schwarze 3761:
1.22 schwarze 3762: /*
3763: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3764: * opening anything that's not in our cwd or anything beneath
3765: * it. Thus, explicitly disallow traversing up the file-system
3766: * or using absolute paths.
3767: */
3768:
1.110 schwarze 3769: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.222 schwarze 3770: mandoc_msg(MANDOCERR_SO_PATH, ln, ppos, ".so %s", name);
1.121 schwarze 3771: buf->sz = mandoc_asprintf(&cp,
3772: ".sp\nSee the file %s.\n.sp", name) + 1;
3773: free(buf->buf);
3774: buf->buf = cp;
3775: *offs = 0;
1.149 schwarze 3776: return ROFF_REPARSE;
1.14 schwarze 3777: }
3778:
3779: *offs = pos;
1.149 schwarze 3780: return ROFF_SO;
1.7 schwarze 3781: }
3782:
1.138 schwarze 3783: /* --- user defined strings and macros ------------------------------------ */
3784:
1.212 schwarze 3785: static int
1.16 schwarze 3786: roff_userdef(ROFF_ARGS)
1.12 schwarze 3787: {
1.211 schwarze 3788: struct mctx *ctx;
3789: char *arg, *ap, *dst, *src;
3790: size_t sz;
3791:
3792: /* Initialize a new macro stack context. */
3793:
3794: if (++r->mstackpos == r->mstacksz) {
3795: r->mstack = mandoc_recallocarray(r->mstack,
3796: r->mstacksz, r->mstacksz + 8, sizeof(*r->mstack));
3797: r->mstacksz += 8;
3798: }
3799: ctx = r->mstack + r->mstackpos;
3800: ctx->argsz = 0;
3801: ctx->argc = 0;
3802: ctx->argv = NULL;
3803:
3804: /*
3805: * Collect pointers to macro argument strings,
3806: * NUL-terminating them and escaping quotes.
3807: */
3808:
3809: src = buf->buf + pos;
3810: while (*src != '\0') {
3811: if (ctx->argc == ctx->argsz) {
3812: ctx->argsz += 8;
3813: ctx->argv = mandoc_reallocarray(ctx->argv,
3814: ctx->argsz, sizeof(*ctx->argv));
3815: }
1.227 schwarze 3816: arg = roff_getarg(r, &src, ln, &pos);
1.211 schwarze 3817: sz = 1; /* For the terminating NUL. */
3818: for (ap = arg; *ap != '\0'; ap++)
3819: sz += *ap == '"' ? 4 : 1;
3820: ctx->argv[ctx->argc++] = dst = mandoc_malloc(sz);
3821: for (ap = arg; *ap != '\0'; ap++) {
3822: if (*ap == '"') {
3823: memcpy(dst, "\\(dq", 4);
3824: dst += 4;
3825: } else
3826: *dst++ = *ap;
1.16 schwarze 3827: }
1.211 schwarze 3828: *dst = '\0';
1.227 schwarze 3829: free(arg);
1.209 schwarze 3830: }
3831:
1.211 schwarze 3832: /* Replace the macro invocation by the macro definition. */
1.135 schwarze 3833:
1.110 schwarze 3834: free(buf->buf);
1.211 schwarze 3835: buf->buf = mandoc_strdup(r->current_string);
3836: buf->sz = strlen(buf->buf) + 1;
1.120 schwarze 3837: *offs = 0;
1.16 schwarze 3838:
1.149 schwarze 3839: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
1.212 schwarze 3840: ROFF_REPARSE | ROFF_USERCALL : ROFF_IGN | ROFF_APPEND;
1.12 schwarze 3841: }
1.28 schwarze 3842:
1.178 schwarze 3843: /*
3844: * Calling a high-level macro that was renamed with .rn.
3845: * r->current_string has already been set up by roff_parse().
3846: */
1.212 schwarze 3847: static int
1.178 schwarze 3848: roff_renamed(ROFF_ARGS)
3849: {
3850: char *nbuf;
3851:
1.187 schwarze 3852: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
3853: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.178 schwarze 3854: free(buf->buf);
3855: buf->buf = nbuf;
1.201 schwarze 3856: *offs = 0;
1.178 schwarze 3857: return ROFF_CONT;
3858: }
3859:
1.85 schwarze 3860: static size_t
1.28 schwarze 3861: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3862: {
3863: char *name, *cp;
1.85 schwarze 3864: size_t namesz;
1.28 schwarze 3865:
3866: name = *cpp;
3867: if ('\0' == *name)
1.149 schwarze 3868: return 0;
1.28 schwarze 3869:
1.85 schwarze 3870: /* Read until end of name and terminate it with NUL. */
3871: for (cp = name; 1; cp++) {
3872: if ('\0' == *cp || ' ' == *cp) {
3873: namesz = cp - name;
3874: break;
3875: }
1.28 schwarze 3876: if ('\\' != *cp)
3877: continue;
1.88 schwarze 3878: namesz = cp - name;
3879: if ('{' == cp[1] || '}' == cp[1])
3880: break;
1.28 schwarze 3881: cp++;
3882: if ('\\' == *cp)
3883: continue;
1.222 schwarze 3884: mandoc_msg(MANDOCERR_NAMESC, ln, pos,
1.97 schwarze 3885: "%.*s", (int)(cp - name + 1), name);
1.85 schwarze 3886: mandoc_escape((const char **)&cp, NULL, NULL);
3887: break;
1.28 schwarze 3888: }
3889:
3890: /* Read past spaces. */
3891: while (' ' == *cp)
3892: cp++;
3893:
3894: *cpp = cp;
1.149 schwarze 3895: return namesz;
1.28 schwarze 3896: }
3897:
1.16 schwarze 3898: /*
3899: * Store *string into the user-defined string called *name.
3900: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.66 schwarze 3901: * append == 0: replace mode
3902: * append == 1: single-line append mode
3903: * append == 2: multiline append mode, append '\n' after each call
1.16 schwarze 3904: */
1.8 schwarze 3905: static void
1.16 schwarze 3906: roff_setstr(struct roff *r, const char *name, const char *string,
1.66 schwarze 3907: int append)
1.7 schwarze 3908: {
1.187 schwarze 3909: size_t namesz;
1.42 schwarze 3910:
1.187 schwarze 3911: namesz = strlen(name);
3912: roff_setstrn(&r->strtab, name, namesz, string,
1.80 schwarze 3913: string ? strlen(string) : 0, append);
1.187 schwarze 3914: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.42 schwarze 3915: }
3916:
3917: static void
3918: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.66 schwarze 3919: const char *string, size_t stringsz, int append)
1.42 schwarze 3920: {
3921: struct roffkv *n;
3922: char *c;
3923: int i;
3924: size_t oldch, newch;
1.7 schwarze 3925:
1.16 schwarze 3926: /* Search for an existing string with the same name. */
1.42 schwarze 3927: n = *r;
3928:
1.84 schwarze 3929: while (n && (namesz != n->key.sz ||
3930: strncmp(n->key.p, name, namesz)))
1.7 schwarze 3931: n = n->next;
1.8 schwarze 3932:
3933: if (NULL == n) {
1.16 schwarze 3934: /* Create a new string table entry. */
1.42 schwarze 3935: n = mandoc_malloc(sizeof(struct roffkv));
3936: n->key.p = mandoc_strndup(name, namesz);
3937: n->key.sz = namesz;
3938: n->val.p = NULL;
3939: n->val.sz = 0;
3940: n->next = *r;
3941: *r = n;
1.66 schwarze 3942: } else if (0 == append) {
1.42 schwarze 3943: free(n->val.p);
3944: n->val.p = NULL;
3945: n->val.sz = 0;
1.16 schwarze 3946: }
3947:
3948: if (NULL == string)
3949: return;
3950:
3951: /*
3952: * One additional byte for the '\n' in multiline mode,
3953: * and one for the terminating '\0'.
3954: */
1.66 schwarze 3955: newch = stringsz + (1 < append ? 2u : 1u);
1.42 schwarze 3956:
3957: if (NULL == n->val.p) {
3958: n->val.p = mandoc_malloc(newch);
3959: *n->val.p = '\0';
1.16 schwarze 3960: oldch = 0;
3961: } else {
1.42 schwarze 3962: oldch = n->val.sz;
3963: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.16 schwarze 3964: }
3965:
3966: /* Skip existing content in the destination buffer. */
1.42 schwarze 3967: c = n->val.p + (int)oldch;
1.16 schwarze 3968:
3969: /* Append new content to the destination buffer. */
1.42 schwarze 3970: i = 0;
3971: while (i < (int)stringsz) {
1.16 schwarze 3972: /*
3973: * Rudimentary roff copy mode:
3974: * Handle escaped backslashes.
3975: */
1.42 schwarze 3976: if ('\\' == string[i] && '\\' == string[i + 1])
3977: i++;
3978: *c++ = string[i++];
1.16 schwarze 3979: }
1.8 schwarze 3980:
1.16 schwarze 3981: /* Append terminating bytes. */
1.66 schwarze 3982: if (1 < append)
1.16 schwarze 3983: *c++ = '\n';
1.42 schwarze 3984:
1.16 schwarze 3985: *c = '\0';
1.42 schwarze 3986: n->val.sz = (int)(c - n->val.p);
1.7 schwarze 3987: }
3988:
1.8 schwarze 3989: static const char *
1.197 schwarze 3990: roff_getstrn(struct roff *r, const char *name, size_t len,
1.187 schwarze 3991: int *deftype)
1.7 schwarze 3992: {
1.187 schwarze 3993: const struct roffkv *n;
1.197 schwarze 3994: int found, i;
1.187 schwarze 3995: enum roff_tok tok;
3996:
1.197 schwarze 3997: found = 0;
3998: for (n = r->strtab; n != NULL; n = n->next) {
3999: if (strncmp(name, n->key.p, len) != 0 ||
4000: n->key.p[len] != '\0' || n->val.p == NULL)
4001: continue;
4002: if (*deftype & ROFFDEF_USER) {
4003: *deftype = ROFFDEF_USER;
4004: return n->val.p;
4005: } else {
4006: found = 1;
4007: break;
4008: }
4009: }
4010: for (n = r->rentab; n != NULL; n = n->next) {
4011: if (strncmp(name, n->key.p, len) != 0 ||
4012: n->key.p[len] != '\0' || n->val.p == NULL)
4013: continue;
4014: if (*deftype & ROFFDEF_REN) {
4015: *deftype = ROFFDEF_REN;
4016: return n->val.p;
4017: } else {
4018: found = 1;
4019: break;
1.187 schwarze 4020: }
4021: }
1.197 schwarze 4022: for (i = 0; i < PREDEFS_MAX; i++) {
4023: if (strncmp(name, predefs[i].name, len) != 0 ||
4024: predefs[i].name[len] != '\0')
4025: continue;
4026: if (*deftype & ROFFDEF_PRE) {
4027: *deftype = ROFFDEF_PRE;
4028: return predefs[i].str;
4029: } else {
4030: found = 1;
4031: break;
1.187 schwarze 4032: }
4033: }
1.228 schwarze 4034: if (r->man->meta.macroset != MACROSET_MAN) {
1.197 schwarze 4035: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
4036: if (strncmp(name, roff_name[tok], len) != 0 ||
4037: roff_name[tok][len] != '\0')
4038: continue;
4039: if (*deftype & ROFFDEF_STD) {
4040: *deftype = ROFFDEF_STD;
4041: return NULL;
4042: } else {
4043: found = 1;
4044: break;
1.187 schwarze 4045: }
4046: }
4047: }
1.228 schwarze 4048: if (r->man->meta.macroset != MACROSET_MDOC) {
1.197 schwarze 4049: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
4050: if (strncmp(name, roff_name[tok], len) != 0 ||
4051: roff_name[tok][len] != '\0')
4052: continue;
4053: if (*deftype & ROFFDEF_STD) {
4054: *deftype = ROFFDEF_STD;
4055: return NULL;
4056: } else {
4057: found = 1;
4058: break;
1.187 schwarze 4059: }
4060: }
1.197 schwarze 4061: }
4062:
4063: if (found == 0 && *deftype != ROFFDEF_ANY) {
4064: if (*deftype & ROFFDEF_REN) {
4065: /*
4066: * This might still be a request,
4067: * so do not treat it as undefined yet.
4068: */
4069: *deftype = ROFFDEF_UNDEF;
4070: return NULL;
1.187 schwarze 4071: }
1.197 schwarze 4072:
4073: /* Using an undefined string defines it to be empty. */
4074:
4075: roff_setstrn(&r->strtab, name, len, "", 0, 0);
4076: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.187 schwarze 4077: }
1.197 schwarze 4078:
1.187 schwarze 4079: *deftype = 0;
1.149 schwarze 4080: return NULL;
1.7 schwarze 4081: }
4082:
1.8 schwarze 4083: static void
1.42 schwarze 4084: roff_freestr(struct roffkv *r)
1.7 schwarze 4085: {
1.42 schwarze 4086: struct roffkv *n, *nn;
1.7 schwarze 4087:
1.42 schwarze 4088: for (n = r; n; n = nn) {
4089: free(n->key.p);
4090: free(n->val.p);
1.7 schwarze 4091: nn = n->next;
4092: free(n);
4093: }
1.27 schwarze 4094: }
1.138 schwarze 4095:
4096: /* --- accessors and utility functions ------------------------------------ */
1.42 schwarze 4097:
4098: /*
4099: * Duplicate an input string, making the appropriate character
4100: * conversations (as stipulated by `tr') along the way.
4101: * Returns a heap-allocated string with all the replacements made.
4102: */
4103: char *
4104: roff_strdup(const struct roff *r, const char *p)
4105: {
4106: const struct roffkv *cp;
4107: char *res;
4108: const char *pp;
4109: size_t ssz, sz;
4110: enum mandoc_esc esc;
4111:
4112: if (NULL == r->xmbtab && NULL == r->xtab)
1.149 schwarze 4113: return mandoc_strdup(p);
1.42 schwarze 4114: else if ('\0' == *p)
1.149 schwarze 4115: return mandoc_strdup("");
1.42 schwarze 4116:
4117: /*
4118: * Step through each character looking for term matches
4119: * (remember that a `tr' can be invoked with an escape, which is
4120: * a glyph but the escape is multi-character).
4121: * We only do this if the character hash has been initialised
4122: * and the string is >0 length.
4123: */
4124:
4125: res = NULL;
4126: ssz = 0;
4127:
4128: while ('\0' != *p) {
1.161 schwarze 4129: assert((unsigned int)*p < 128);
4130: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.42 schwarze 4131: sz = r->xtab[(int)*p].sz;
4132: res = mandoc_realloc(res, ssz + sz + 1);
4133: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
4134: ssz += sz;
4135: p++;
4136: continue;
4137: } else if ('\\' != *p) {
4138: res = mandoc_realloc(res, ssz + 2);
4139: res[ssz++] = *p++;
4140: continue;
4141: }
4142:
4143: /* Search for term matches. */
4144: for (cp = r->xmbtab; cp; cp = cp->next)
4145: if (0 == strncmp(p, cp->key.p, cp->key.sz))
4146: break;
4147:
4148: if (NULL != cp) {
4149: /*
4150: * A match has been found.
4151: * Append the match to the array and move
4152: * forward by its keysize.
4153: */
1.80 schwarze 4154: res = mandoc_realloc(res,
4155: ssz + cp->val.sz + 1);
1.42 schwarze 4156: memcpy(res + ssz, cp->val.p, cp->val.sz);
4157: ssz += cp->val.sz;
4158: p += (int)cp->key.sz;
4159: continue;
4160: }
4161:
4162: /*
4163: * Handle escapes carefully: we need to copy
4164: * over just the escape itself, or else we might
4165: * do replacements within the escape itself.
4166: * Make sure to pass along the bogus string.
4167: */
4168: pp = p++;
4169: esc = mandoc_escape(&p, NULL, NULL);
4170: if (ESCAPE_ERROR == esc) {
4171: sz = strlen(pp);
4172: res = mandoc_realloc(res, ssz + sz + 1);
4173: memcpy(res + ssz, pp, sz);
4174: break;
4175: }
1.80 schwarze 4176: /*
4177: * We bail out on bad escapes.
1.42 schwarze 4178: * No need to warn: we already did so when
1.227 schwarze 4179: * roff_expand() was called.
1.42 schwarze 4180: */
4181: sz = (int)(p - pp);
4182: res = mandoc_realloc(res, ssz + sz + 1);
4183: memcpy(res + ssz, pp, sz);
4184: ssz += sz;
4185: }
4186:
4187: res[(int)ssz] = '\0';
1.149 schwarze 4188: return res;
1.99 schwarze 4189: }
4190:
4191: int
4192: roff_getformat(const struct roff *r)
4193: {
4194:
1.149 schwarze 4195: return r->format;
1.48 schwarze 4196: }
4197:
4198: /*
1.80 schwarze 4199: * Find out whether a line is a macro line or not.
1.48 schwarze 4200: * If it is, adjust the current position and return one; if it isn't,
4201: * return zero and don't change the current position.
4202: * If the control character has been set with `.cc', then let that grain
4203: * precedence.
4204: * This is slighly contrary to groff, where using the non-breaking
4205: * control character when `cc' has been invoked will cause the
4206: * non-breaking macro contents to be printed verbatim.
4207: */
4208: int
4209: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
4210: {
4211: int pos;
4212:
4213: pos = *ppos;
4214:
1.175 schwarze 4215: if (r->control != '\0' && cp[pos] == r->control)
1.48 schwarze 4216: pos++;
1.175 schwarze 4217: else if (r->control != '\0')
1.149 schwarze 4218: return 0;
1.48 schwarze 4219: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
4220: pos += 2;
4221: else if ('.' == cp[pos] || '\'' == cp[pos])
4222: pos++;
4223: else
1.149 schwarze 4224: return 0;
1.48 schwarze 4225:
4226: while (' ' == cp[pos] || '\t' == cp[pos])
4227: pos++;
4228:
4229: *ppos = pos;
1.149 schwarze 4230: return 1;
1.1 schwarze 4231: }
![[BACK]](/icons/back.gif){kind=icon}
Return to roff.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / mandoc