Annotation of src/usr.bin/mandoc/roff.c, Revision 1.229
1.229 ! schwarze 1: /* $OpenBSD: roff.c,v 1.228 2018/12/30 00:48:48 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_br(ROFF_ARGS);
183: static int roff_cblock(ROFF_ARGS);
184: static int roff_cc(ROFF_ARGS);
185: static int roff_ccond(struct roff *, int, int);
1.213 schwarze 186: static int roff_char(ROFF_ARGS);
1.212 schwarze 187: static int roff_cond(ROFF_ARGS);
188: static int roff_cond_text(ROFF_ARGS);
189: static int roff_cond_sub(ROFF_ARGS);
190: static int roff_ds(ROFF_ARGS);
191: static int roff_ec(ROFF_ARGS);
192: static int roff_eo(ROFF_ARGS);
193: static int roff_eqndelim(struct roff *, struct buf *, int);
1.143 schwarze 194: static int roff_evalcond(struct roff *r, int, char *, int *);
1.106 schwarze 195: static int roff_evalnum(struct roff *, int,
196: const char *, int *, int *, int);
197: static int roff_evalpar(struct roff *, int,
1.133 schwarze 198: const char *, int *, int *, int);
1.71 schwarze 199: static int roff_evalstrcond(const char *, int *);
1.227 schwarze 200: static int roff_expand(struct roff *, struct buf *,
201: int, int, char);
1.42 schwarze 202: static void roff_free1(struct roff *);
1.52 schwarze 203: static void roff_freereg(struct roffreg *);
1.42 schwarze 204: static void roff_freestr(struct roffkv *);
1.85 schwarze 205: static size_t roff_getname(struct roff *, char **, int, int);
1.133 schwarze 206: static int roff_getnum(const char *, int *, int *, int);
1.56 schwarze 207: static int roff_getop(const char *, int *, char *);
1.199 schwarze 208: static int roff_getregn(struct roff *,
209: const char *, size_t, char);
1.145 schwarze 210: static int roff_getregro(const struct roff *,
211: const char *name);
1.197 schwarze 212: static const char *roff_getstrn(struct roff *,
1.187 schwarze 213: const char *, size_t, int *);
1.143 schwarze 214: static int roff_hasregn(const struct roff *,
215: const char *, size_t);
1.212 schwarze 216: static int roff_insec(ROFF_ARGS);
217: static int roff_it(ROFF_ARGS);
218: static int roff_line_ignore(ROFF_ARGS);
1.137 schwarze 219: static void roff_man_alloc1(struct roff_man *);
220: static void roff_man_free1(struct roff_man *);
1.212 schwarze 221: static int roff_manyarg(ROFF_ARGS);
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] = {
1.177 schwarze 258: "br", "ce", "ft", "ll",
1.184 schwarze 259: "mc", "po", "rj", "sp",
260: "ta", "ti", NULL,
1.166 schwarze 261: "ab", "ad", "af", "aln",
262: "als", "am", "am1", "ami",
263: "ami1", "as", "as1", "asciify",
264: "backtrace", "bd", "bleedat", "blm",
265: "box", "boxa", "bp", "BP",
266: "break", "breakchar", "brnl", "brp",
1.177 schwarze 267: "brpnl", "c2", "cc",
1.166 schwarze 268: "cf", "cflags", "ch", "char",
269: "chop", "class", "close", "CL",
270: "color", "composite", "continue", "cp",
271: "cropat", "cs", "cu", "da",
272: "dch", "Dd", "de", "de1",
273: "defcolor", "dei", "dei1", "device",
274: "devicem", "di", "do", "ds",
275: "ds1", "dwh", "dt", "ec",
276: "ecr", "ecs", "el", "em",
277: "EN", "eo", "EP", "EQ",
278: "errprint", "ev", "evc", "ex",
279: "fallback", "fam", "fc", "fchar",
280: "fcolor", "fdeferlig", "feature", "fkern",
281: "fl", "flig", "fp", "fps",
282: "fschar", "fspacewidth", "fspecial", "ftr",
283: "fzoom", "gcolor", "hc", "hcode",
284: "hidechar", "hla", "hlm", "hpf",
285: "hpfa", "hpfcode", "hw", "hy",
286: "hylang", "hylen", "hym", "hypp",
287: "hys", "ie", "if", "ig",
288: "index", "it", "itc", "IX",
289: "kern", "kernafter", "kernbefore", "kernpair",
290: "lc", "lc_ctype", "lds", "length",
291: "letadj", "lf", "lg", "lhang",
292: "linetabs", "lnr", "lnrf", "lpfx",
1.176 schwarze 293: "ls", "lsm", "lt",
1.166 schwarze 294: "mediasize", "minss", "mk", "mso",
295: "na", "ne", "nh", "nhychar",
296: "nm", "nn", "nop", "nr",
297: "nrf", "nroff", "ns", "nx",
298: "open", "opena", "os", "output",
299: "padj", "papersize", "pc", "pev",
300: "pi", "PI", "pl", "pm",
1.184 schwarze 301: "pn", "pnr", "ps",
1.166 schwarze 302: "psbb", "pshape", "pso", "ptr",
303: "pvs", "rchar", "rd", "recursionlimit",
1.181 schwarze 304: "return", "rfschar", "rhang",
1.166 schwarze 305: "rm", "rn", "rnn", "rr",
306: "rs", "rt", "schar", "sentchar",
307: "shc", "shift", "sizes", "so",
308: "spacewidth", "special", "spreadwarn", "ss",
309: "sty", "substring", "sv", "sy",
1.172 schwarze 310: "T&", "tc", "TE",
1.173 schwarze 311: "TH", "tkf", "tl",
1.166 schwarze 312: "tm", "tm1", "tmc", "tr",
313: "track", "transchar", "trf", "trimat",
314: "trin", "trnt", "troff", "TS",
315: "uf", "ul", "unformat", "unwatch",
316: "unwatchn", "vpt", "vs", "warn",
317: "warnscale", "watch", "watchlength", "watchn",
318: "wh", "while", "write", "writec",
319: "writem", "xflag", ".", NULL,
1.178 schwarze 320: NULL, "text",
1.166 schwarze 321: "Dd", "Dt", "Os", "Sh",
322: "Ss", "Pp", "D1", "Dl",
323: "Bd", "Ed", "Bl", "El",
324: "It", "Ad", "An", "Ap",
325: "Ar", "Cd", "Cm", "Dv",
326: "Er", "Ev", "Ex", "Fa",
327: "Fd", "Fl", "Fn", "Ft",
328: "Ic", "In", "Li", "Nd",
329: "Nm", "Op", "Ot", "Pa",
330: "Rv", "St", "Va", "Vt",
331: "Xr", "%A", "%B", "%D",
332: "%I", "%J", "%N", "%O",
333: "%P", "%R", "%T", "%V",
334: "Ac", "Ao", "Aq", "At",
335: "Bc", "Bf", "Bo", "Bq",
336: "Bsx", "Bx", "Db", "Dc",
337: "Do", "Dq", "Ec", "Ef",
338: "Em", "Eo", "Fx", "Ms",
339: "No", "Ns", "Nx", "Ox",
340: "Pc", "Pf", "Po", "Pq",
341: "Qc", "Ql", "Qo", "Qq",
342: "Re", "Rs", "Sc", "So",
343: "Sq", "Sm", "Sx", "Sy",
344: "Tn", "Ux", "Xc", "Xo",
345: "Fo", "Fc", "Oo", "Oc",
346: "Bk", "Ek", "Bt", "Hf",
347: "Fr", "Ud", "Lb", "Lp",
348: "Lk", "Mt", "Brq", "Bro",
349: "Brc", "%C", "Es", "En",
1.171 schwarze 350: "Dx", "%Q", "%U", "Ta",
351: NULL,
1.166 schwarze 352: "TH", "SH", "SS", "TP",
1.204 schwarze 353: "TQ",
1.166 schwarze 354: "LP", "PP", "P", "IP",
355: "HP", "SM", "SB", "BI",
356: "IB", "BR", "RB", "R",
357: "B", "I", "IR", "RI",
1.171 schwarze 358: "nf", "fi",
1.166 schwarze 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] = {
1.168 schwarze 368: { roff_br, NULL, NULL, 0 }, /* br */
1.177 schwarze 369: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.169 schwarze 370: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.170 schwarze 371: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.176 schwarze 372: { roff_onearg, NULL, NULL, 0 }, /* mc */
1.184 schwarze 373: { roff_onearg, NULL, NULL, 0 }, /* po */
1.181 schwarze 374: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.171 schwarze 375: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.172 schwarze 376: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.173 schwarze 377: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.168 schwarze 378: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.167 schwarze 379: { roff_unsupp, NULL, NULL, 0 }, /* ab */
380: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
381: { roff_line_ignore, NULL, NULL, 0 }, /* af */
382: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.183 schwarze 383: { roff_als, NULL, NULL, 0 }, /* als */
1.167 schwarze 384: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
385: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
386: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
387: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
388: { roff_ds, NULL, NULL, 0 }, /* as */
389: { roff_ds, NULL, NULL, 0 }, /* as1 */
390: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
391: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
392: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
393: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
394: { roff_unsupp, NULL, NULL, 0 }, /* blm */
395: { roff_unsupp, NULL, NULL, 0 }, /* box */
396: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
397: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
398: { roff_unsupp, NULL, NULL, 0 }, /* BP */
399: { roff_unsupp, NULL, NULL, 0 }, /* break */
400: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
401: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.168 schwarze 402: { roff_br, NULL, NULL, 0 }, /* brp */
1.167 schwarze 403: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
404: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
405: { roff_cc, NULL, NULL, 0 }, /* cc */
406: { roff_insec, NULL, NULL, 0 }, /* cf */
407: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
408: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
1.213 schwarze 409: { roff_char, NULL, NULL, 0 }, /* char */
1.167 schwarze 410: { roff_unsupp, NULL, NULL, 0 }, /* chop */
411: { roff_line_ignore, NULL, NULL, 0 }, /* class */
412: { roff_insec, NULL, NULL, 0 }, /* close */
413: { roff_unsupp, NULL, NULL, 0 }, /* CL */
414: { roff_line_ignore, NULL, NULL, 0 }, /* color */
415: { roff_unsupp, NULL, NULL, 0 }, /* composite */
416: { roff_unsupp, NULL, NULL, 0 }, /* continue */
417: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
418: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
419: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
420: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
421: { roff_unsupp, NULL, NULL, 0 }, /* da */
422: { roff_unsupp, NULL, NULL, 0 }, /* dch */
423: { roff_Dd, NULL, NULL, 0 }, /* Dd */
424: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
425: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
426: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
427: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
428: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
429: { roff_unsupp, NULL, NULL, 0 }, /* device */
430: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
431: { roff_unsupp, NULL, NULL, 0 }, /* di */
432: { roff_unsupp, NULL, NULL, 0 }, /* do */
433: { roff_ds, NULL, NULL, 0 }, /* ds */
434: { roff_ds, NULL, NULL, 0 }, /* ds1 */
435: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
436: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.175 schwarze 437: { roff_ec, NULL, NULL, 0 }, /* ec */
1.167 schwarze 438: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
439: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
440: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
441: { roff_unsupp, NULL, NULL, 0 }, /* em */
442: { roff_EN, NULL, NULL, 0 }, /* EN */
1.175 schwarze 443: { roff_eo, NULL, NULL, 0 }, /* eo */
1.167 schwarze 444: { roff_unsupp, NULL, NULL, 0 }, /* EP */
445: { roff_EQ, NULL, NULL, 0 }, /* EQ */
446: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
447: { roff_unsupp, NULL, NULL, 0 }, /* ev */
448: { roff_unsupp, NULL, NULL, 0 }, /* evc */
449: { roff_unsupp, NULL, NULL, 0 }, /* ex */
450: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
451: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
452: { roff_unsupp, NULL, NULL, 0 }, /* fc */
453: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
454: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
455: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
456: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
457: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
458: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
459: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
460: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
461: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
462: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
463: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
464: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
465: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
466: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
467: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
468: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
469: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
470: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
471: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
472: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
473: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
474: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
475: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
476: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
477: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
478: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
479: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
480: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
481: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
482: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
483: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
484: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
485: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
486: { roff_unsupp, NULL, NULL, 0 }, /* index */
487: { roff_it, NULL, NULL, 0 }, /* it */
488: { roff_unsupp, NULL, NULL, 0 }, /* itc */
489: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
490: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
491: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
492: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
493: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
494: { roff_unsupp, NULL, NULL, 0 }, /* lc */
495: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
496: { roff_unsupp, NULL, NULL, 0 }, /* lds */
497: { roff_unsupp, NULL, NULL, 0 }, /* length */
498: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
499: { roff_insec, NULL, NULL, 0 }, /* lf */
500: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
501: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
502: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
503: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
504: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
505: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
506: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
507: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
508: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
509: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
510: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
511: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
512: { roff_insec, NULL, NULL, 0 }, /* mso */
513: { roff_line_ignore, NULL, NULL, 0 }, /* na */
514: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
515: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
516: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
517: { roff_unsupp, NULL, NULL, 0 }, /* nm */
518: { roff_unsupp, NULL, NULL, 0 }, /* nn */
1.202 schwarze 519: { roff_nop, NULL, NULL, 0 }, /* nop */
1.167 schwarze 520: { roff_nr, NULL, NULL, 0 }, /* nr */
521: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
522: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
523: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
524: { roff_insec, NULL, NULL, 0 }, /* nx */
525: { roff_insec, NULL, NULL, 0 }, /* open */
526: { roff_insec, NULL, NULL, 0 }, /* opena */
527: { roff_line_ignore, NULL, NULL, 0 }, /* os */
528: { roff_unsupp, NULL, NULL, 0 }, /* output */
529: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
530: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
531: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
532: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
533: { roff_insec, NULL, NULL, 0 }, /* pi */
534: { roff_unsupp, NULL, NULL, 0 }, /* PI */
535: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
536: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
537: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
538: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
539: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
540: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
541: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
542: { roff_insec, NULL, NULL, 0 }, /* pso */
543: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
544: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
545: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
546: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
547: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
1.211 schwarze 548: { roff_return, NULL, NULL, 0 }, /* return */
1.167 schwarze 549: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
550: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
551: { roff_rm, NULL, NULL, 0 }, /* rm */
1.178 schwarze 552: { roff_rn, NULL, NULL, 0 }, /* rn */
1.167 schwarze 553: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
554: { roff_rr, NULL, NULL, 0 }, /* rr */
555: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
556: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
557: { roff_unsupp, NULL, NULL, 0 }, /* schar */
558: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
559: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
1.211 schwarze 560: { roff_shift, NULL, NULL, 0 }, /* shift */
1.167 schwarze 561: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
562: { roff_so, NULL, NULL, 0 }, /* so */
563: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
564: { roff_line_ignore, NULL, NULL, 0 }, /* special */
565: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
566: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
567: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
568: { roff_unsupp, NULL, NULL, 0 }, /* substring */
569: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
570: { roff_insec, NULL, NULL, 0 }, /* sy */
571: { roff_T_, NULL, NULL, 0 }, /* T& */
572: { roff_unsupp, NULL, NULL, 0 }, /* tc */
573: { roff_TE, NULL, NULL, 0 }, /* TE */
1.187 schwarze 574: { roff_Dd, NULL, NULL, 0 }, /* TH */
1.167 schwarze 575: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
576: { roff_unsupp, NULL, NULL, 0 }, /* tl */
577: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
578: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
579: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
580: { roff_tr, NULL, NULL, 0 }, /* tr */
581: { roff_line_ignore, NULL, NULL, 0 }, /* track */
582: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
583: { roff_insec, NULL, NULL, 0 }, /* trf */
584: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
585: { roff_unsupp, NULL, NULL, 0 }, /* trin */
586: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
587: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
588: { roff_TS, NULL, NULL, 0 }, /* TS */
589: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
590: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
591: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
592: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
593: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
594: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
595: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
596: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
597: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
598: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
599: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
600: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
601: { roff_unsupp, NULL, NULL, 0 }, /* wh */
1.212 schwarze 602: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /*while*/
1.167 schwarze 603: { roff_insec, NULL, NULL, 0 }, /* write */
604: { roff_insec, NULL, NULL, 0 }, /* writec */
605: { roff_insec, NULL, NULL, 0 }, /* writem */
606: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
607: { roff_cblock, NULL, NULL, 0 }, /* . */
1.178 schwarze 608: { roff_renamed, NULL, NULL, 0 },
1.167 schwarze 609: { roff_userdef, NULL, NULL, 0 }
1.1 schwarze 610: };
611:
1.37 schwarze 612: /* Array of injected predefined strings. */
613: #define PREDEFS_MAX 38
614: static const struct predef predefs[PREDEFS_MAX] = {
615: #include "predefs.in"
616: };
617:
1.177 schwarze 618: static int roffce_lines; /* number of input lines to center */
619: static struct roff_node *roffce_node; /* active request */
1.51 schwarze 620: static int roffit_lines; /* number of lines to delay */
621: static char *roffit_macro; /* nil-terminated macro line */
622:
1.80 schwarze 623:
1.138 schwarze 624: /* --- request table ------------------------------------------------------ */
625:
1.167 schwarze 626: struct ohash *
627: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.3 schwarze 628: {
1.167 schwarze 629: struct ohash *htab;
630: struct roffreq *req;
631: enum roff_tok tok;
632: size_t sz;
633: unsigned int slot;
1.3 schwarze 634:
1.167 schwarze 635: htab = mandoc_malloc(sizeof(*htab));
636: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.3 schwarze 637:
1.167 schwarze 638: for (tok = mintok; tok < maxtok; tok++) {
1.168 schwarze 639: if (roff_name[tok] == NULL)
640: continue;
1.167 schwarze 641: sz = strlen(roff_name[tok]);
642: req = mandoc_malloc(sizeof(*req) + sz + 1);
643: req->tok = tok;
644: memcpy(req->name, roff_name[tok], sz + 1);
645: slot = ohash_qlookup(htab, req->name);
646: ohash_insert(htab, slot, req);
1.3 schwarze 647: }
1.167 schwarze 648: return htab;
1.3 schwarze 649: }
650:
1.167 schwarze 651: void
652: roffhash_free(struct ohash *htab)
1.1 schwarze 653: {
1.167 schwarze 654: struct roffreq *req;
655: unsigned int slot;
1.1 schwarze 656:
1.167 schwarze 657: if (htab == NULL)
658: return;
659: for (req = ohash_first(htab, &slot); req != NULL;
660: req = ohash_next(htab, &slot))
661: free(req);
662: ohash_delete(htab);
663: free(htab);
664: }
665:
666: enum roff_tok
667: roffhash_find(struct ohash *htab, const char *name, size_t sz)
668: {
669: struct roffreq *req;
670: const char *end;
671:
672: if (sz) {
673: end = name + sz;
674: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
675: } else
676: req = ohash_find(htab, ohash_qlookup(htab, name));
677: return req == NULL ? TOKEN_NONE : req->tok;
1.1 schwarze 678: }
679:
1.138 schwarze 680: /* --- stack of request blocks -------------------------------------------- */
681:
1.1 schwarze 682: /*
683: * Pop the current node off of the stack of roff instructions currently
684: * pending.
685: */
1.212 schwarze 686: static int
1.1 schwarze 687: roffnode_pop(struct roff *r)
688: {
689: struct roffnode *p;
1.212 schwarze 690: int inloop;
1.1 schwarze 691:
1.80 schwarze 692: p = r->last;
1.212 schwarze 693: inloop = p->tok == ROFF_while;
694: r->last = p->parent;
1.16 schwarze 695: free(p->name);
696: free(p->end);
1.1 schwarze 697: free(p);
1.212 schwarze 698: return inloop;
1.1 schwarze 699: }
700:
701: /*
702: * Push a roff node onto the instruction stack. This must later be
703: * removed with roffnode_pop().
704: */
1.11 schwarze 705: static void
1.166 schwarze 706: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.16 schwarze 707: int line, int col)
1.1 schwarze 708: {
709: struct roffnode *p;
710:
1.11 schwarze 711: p = mandoc_calloc(1, sizeof(struct roffnode));
1.1 schwarze 712: p->tok = tok;
1.16 schwarze 713: if (name)
714: p->name = mandoc_strdup(name);
1.1 schwarze 715: p->parent = r->last;
716: p->line = line;
717: p->col = col;
1.71 schwarze 718: p->rule = p->parent ? p->parent->rule : 0;
1.1 schwarze 719:
720: r->last = p;
721: }
722:
1.138 schwarze 723: /* --- roff parser state data management ---------------------------------- */
724:
1.1 schwarze 725: static void
726: roff_free1(struct roff *r)
727: {
1.42 schwarze 728: int i;
1.27 schwarze 729:
1.218 schwarze 730: tbl_free(r->first_tbl);
1.27 schwarze 731: r->first_tbl = r->last_tbl = r->tbl = NULL;
1.1 schwarze 732:
1.219 schwarze 733: eqn_free(r->last_eqn);
1.191 schwarze 734: r->last_eqn = r->eqn = NULL;
1.32 schwarze 735:
1.211 schwarze 736: while (r->mstackpos >= 0)
737: roff_userret(r);
738:
1.1 schwarze 739: while (r->last)
740: roffnode_pop(r);
1.27 schwarze 741:
1.96 schwarze 742: free (r->rstack);
743: r->rstack = NULL;
744: r->rstacksz = 0;
745: r->rstackpos = -1;
746:
747: roff_freereg(r->regtab);
748: r->regtab = NULL;
749:
1.42 schwarze 750: roff_freestr(r->strtab);
1.178 schwarze 751: roff_freestr(r->rentab);
1.42 schwarze 752: roff_freestr(r->xmbtab);
1.178 schwarze 753: r->strtab = r->rentab = r->xmbtab = NULL;
1.42 schwarze 754:
755: if (r->xtab)
756: for (i = 0; i < 128; i++)
757: free(r->xtab[i].p);
758: free(r->xtab);
759: r->xtab = NULL;
1.1 schwarze 760: }
761:
762: void
763: roff_reset(struct roff *r)
764: {
765: roff_free1(r);
1.99 schwarze 766: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.175 schwarze 767: r->control = '\0';
768: r->escape = '\\';
1.179 schwarze 769: roffce_lines = 0;
770: roffce_node = NULL;
771: roffit_lines = 0;
772: roffit_macro = NULL;
1.1 schwarze 773: }
774:
775: void
776: roff_free(struct roff *r)
777: {
1.211 schwarze 778: int i;
779:
1.1 schwarze 780: roff_free1(r);
1.211 schwarze 781: for (i = 0; i < r->mstacksz; i++)
782: free(r->mstack[i].argv);
783: free(r->mstack);
1.167 schwarze 784: roffhash_free(r->reqtab);
1.1 schwarze 785: free(r);
786: }
787:
788: struct roff *
1.223 schwarze 789: roff_alloc(int options)
1.1 schwarze 790: {
791: struct roff *r;
792:
1.11 schwarze 793: r = mandoc_calloc(1, sizeof(struct roff));
1.200 schwarze 794: r->reqtab = roffhash_alloc(0, ROFF_RENAMED);
1.72 schwarze 795: r->options = options;
1.99 schwarze 796: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.211 schwarze 797: r->mstackpos = -1;
1.2 schwarze 798: r->rstackpos = -1;
1.175 schwarze 799: r->escape = '\\';
1.149 schwarze 800: return r;
1.137 schwarze 801: }
802:
1.138 schwarze 803: /* --- syntax tree state data management ---------------------------------- */
804:
1.137 schwarze 805: static void
806: roff_man_free1(struct roff_man *man)
807: {
1.228 schwarze 808: if (man->meta.first != NULL)
809: roff_node_delete(man, man->meta.first);
1.137 schwarze 810: free(man->meta.msec);
811: free(man->meta.vol);
812: free(man->meta.os);
813: free(man->meta.arch);
814: free(man->meta.title);
815: free(man->meta.name);
816: free(man->meta.date);
1.228 schwarze 817: free(man->meta.sodest);
1.137 schwarze 818: }
819:
1.229 ! schwarze 820: void
! 821: roff_state_reset(struct roff_man *man)
! 822: {
! 823: man->last = man->meta.first;
! 824: man->last_es = NULL;
! 825: man->flags = 0;
! 826: man->lastsec = man->lastnamed = SEC_NONE;
! 827: man->next = ROFF_NEXT_CHILD;
! 828: roff_setreg(man->roff, "nS", 0, '=');
! 829: }
! 830:
1.137 schwarze 831: static void
832: roff_man_alloc1(struct roff_man *man)
833: {
834: memset(&man->meta, 0, sizeof(man->meta));
1.228 schwarze 835: man->meta.first = mandoc_calloc(1, sizeof(*man->meta.first));
836: man->meta.first->type = ROFFT_ROOT;
837: man->meta.macroset = MACROSET_NONE;
1.229 ! schwarze 838: roff_state_reset(man);
1.137 schwarze 839: }
840:
841: void
842: roff_man_reset(struct roff_man *man)
843: {
844: roff_man_free1(man);
845: roff_man_alloc1(man);
846: }
847:
848: void
849: roff_man_free(struct roff_man *man)
850: {
851: roff_man_free1(man);
852: free(man);
853: }
854:
855: struct roff_man *
1.223 schwarze 856: roff_man_alloc(struct roff *roff, const char *os_s, int quick)
1.137 schwarze 857: {
858: struct roff_man *man;
859:
860: man = mandoc_calloc(1, sizeof(*man));
861: man->roff = roff;
1.188 schwarze 862: man->os_s = os_s;
1.137 schwarze 863: man->quick = quick;
864: roff_man_alloc1(man);
1.168 schwarze 865: roff->man = man;
1.149 schwarze 866: return man;
1.1 schwarze 867: }
868:
1.138 schwarze 869: /* --- syntax tree handling ----------------------------------------------- */
870:
871: struct roff_node *
872: roff_node_alloc(struct roff_man *man, int line, int pos,
873: enum roff_type type, int tok)
874: {
875: struct roff_node *n;
876:
877: n = mandoc_calloc(1, sizeof(*n));
878: n->line = line;
879: n->pos = pos;
880: n->tok = tok;
881: n->type = type;
882: n->sec = man->lastsec;
883:
884: if (man->flags & MDOC_SYNOPSIS)
1.157 schwarze 885: n->flags |= NODE_SYNPRETTY;
1.138 schwarze 886: else
1.157 schwarze 887: n->flags &= ~NODE_SYNPRETTY;
1.138 schwarze 888: if (man->flags & MDOC_NEWLINE)
1.157 schwarze 889: n->flags |= NODE_LINE;
1.138 schwarze 890: man->flags &= ~MDOC_NEWLINE;
891:
1.149 schwarze 892: return n;
1.138 schwarze 893: }
894:
895: void
896: roff_node_append(struct roff_man *man, struct roff_node *n)
897: {
898:
899: switch (man->next) {
900: case ROFF_NEXT_SIBLING:
1.153 schwarze 901: if (man->last->next != NULL) {
902: n->next = man->last->next;
903: man->last->next->prev = n;
904: } else
905: man->last->parent->last = n;
1.138 schwarze 906: man->last->next = n;
907: n->prev = man->last;
908: n->parent = man->last->parent;
909: break;
910: case ROFF_NEXT_CHILD:
1.159 schwarze 911: if (man->last->child != NULL) {
912: n->next = man->last->child;
913: man->last->child->prev = n;
914: } else
915: man->last->last = n;
1.138 schwarze 916: man->last->child = n;
917: n->parent = man->last;
918: break;
919: default:
920: abort();
921: }
1.154 schwarze 922: man->last = n;
1.138 schwarze 923:
924: switch (n->type) {
925: case ROFFT_HEAD:
926: n->parent->head = n;
927: break;
928: case ROFFT_BODY:
1.154 schwarze 929: if (n->end != ENDBODY_NOT)
930: return;
1.138 schwarze 931: n->parent->body = n;
932: break;
933: case ROFFT_TAIL:
934: n->parent->tail = n;
935: break;
936: default:
1.154 schwarze 937: return;
1.138 schwarze 938: }
1.154 schwarze 939:
940: /*
941: * Copy over the normalised-data pointer of our parent. Not
942: * everybody has one, but copying a null pointer is fine.
943: */
944:
945: n->norm = n->parent->norm;
946: assert(n->parent->type == ROFFT_BLOCK);
1.138 schwarze 947: }
948:
1.139 schwarze 949: void
950: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
951: {
952: struct roff_node *n;
953:
954: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
955: n->string = roff_strdup(man->roff, word);
956: roff_node_append(man, n);
1.158 schwarze 957: n->flags |= NODE_VALID | NODE_ENDED;
1.139 schwarze 958: man->next = ROFF_NEXT_SIBLING;
959: }
960:
961: void
962: roff_word_append(struct roff_man *man, const char *word)
963: {
964: struct roff_node *n;
965: char *addstr, *newstr;
966:
967: n = man->last;
968: addstr = roff_strdup(man->roff, word);
969: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
970: free(addstr);
971: free(n->string);
972: n->string = newstr;
973: man->next = ROFF_NEXT_SIBLING;
1.140 schwarze 974: }
975:
976: void
977: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
978: {
979: struct roff_node *n;
980:
981: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
982: roff_node_append(man, n);
983: man->next = ROFF_NEXT_CHILD;
984: }
985:
986: struct roff_node *
987: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
988: {
989: struct roff_node *n;
990:
991: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
992: roff_node_append(man, n);
993: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 994: return n;
1.139 schwarze 995: }
996:
1.138 schwarze 997: struct roff_node *
998: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
999: {
1000: struct roff_node *n;
1001:
1002: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
1003: roff_node_append(man, n);
1004: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 1005: return n;
1.138 schwarze 1006: }
1007:
1008: struct roff_node *
1009: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1010: {
1011: struct roff_node *n;
1012:
1013: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1014: roff_node_append(man, n);
1015: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 1016: return n;
1.139 schwarze 1017: }
1018:
1.193 schwarze 1019: static void
1.218 schwarze 1020: roff_addtbl(struct roff_man *man, int line, struct tbl_node *tbl)
1.139 schwarze 1021: {
1022: struct roff_node *n;
1.218 schwarze 1023: struct tbl_span *span;
1.139 schwarze 1024:
1.228 schwarze 1025: if (man->meta.macroset == MACROSET_MAN)
1.174 schwarze 1026: man_breakscope(man, ROFF_TS);
1.193 schwarze 1027: while ((span = tbl_span(tbl)) != NULL) {
1.218 schwarze 1028: n = roff_node_alloc(man, line, 0, ROFFT_TBL, TOKEN_NONE);
1.193 schwarze 1029: n->span = span;
1030: roff_node_append(man, n);
1031: n->flags |= NODE_VALID | NODE_ENDED;
1032: man->next = ROFF_NEXT_SIBLING;
1033: }
1.138 schwarze 1034: }
1035:
1036: void
1037: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1038: {
1039:
1040: /* Adjust siblings. */
1041:
1042: if (n->prev)
1043: n->prev->next = n->next;
1044: if (n->next)
1045: n->next->prev = n->prev;
1046:
1047: /* Adjust parent. */
1048:
1049: if (n->parent != NULL) {
1050: if (n->parent->child == n)
1051: n->parent->child = n->next;
1052: if (n->parent->last == n)
1053: n->parent->last = n->prev;
1054: }
1055:
1056: /* Adjust parse point. */
1057:
1058: if (man == NULL)
1059: return;
1060: if (man->last == n) {
1061: if (n->prev == NULL) {
1062: man->last = n->parent;
1063: man->next = ROFF_NEXT_CHILD;
1064: } else {
1065: man->last = n->prev;
1066: man->next = ROFF_NEXT_SIBLING;
1067: }
1068: }
1.228 schwarze 1069: if (man->meta.first == n)
1070: man->meta.first = NULL;
1.216 schwarze 1071: }
1072:
1073: void
1074: roff_node_relink(struct roff_man *man, struct roff_node *n)
1075: {
1076: roff_node_unlink(man, n);
1077: n->prev = n->next = NULL;
1078: roff_node_append(man, n);
1.138 schwarze 1079: }
1080:
1081: void
1082: roff_node_free(struct roff_node *n)
1083: {
1084:
1085: if (n->args != NULL)
1086: mdoc_argv_free(n->args);
1087: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1088: free(n->norm);
1.219 schwarze 1089: eqn_box_free(n->eqn);
1.138 schwarze 1090: free(n->string);
1091: free(n);
1092: }
1093:
1094: void
1095: roff_node_delete(struct roff_man *man, struct roff_node *n)
1096: {
1097:
1098: while (n->child != NULL)
1099: roff_node_delete(man, n->child);
1100: roff_node_unlink(man, n);
1101: roff_node_free(n);
1.141 schwarze 1102: }
1103:
1104: void
1105: deroff(char **dest, const struct roff_node *n)
1106: {
1107: char *cp;
1108: size_t sz;
1109:
1110: if (n->type != ROFFT_TEXT) {
1111: for (n = n->child; n != NULL; n = n->next)
1112: deroff(dest, n);
1113: return;
1114: }
1115:
1.160 schwarze 1116: /* Skip leading whitespace. */
1.141 schwarze 1117:
1.160 schwarze 1118: for (cp = n->string; *cp != '\0'; cp++) {
1.161 schwarze 1119: if (cp[0] == '\\' && cp[1] != '\0' &&
1120: strchr(" %&0^|~", cp[1]) != NULL)
1.141 schwarze 1121: cp++;
1.160 schwarze 1122: else if ( ! isspace((unsigned char)*cp))
1.141 schwarze 1123: break;
1124: }
1125:
1.161 schwarze 1126: /* Skip trailing backslash. */
1127:
1128: sz = strlen(cp);
1.162 schwarze 1129: if (sz > 0 && cp[sz - 1] == '\\')
1.161 schwarze 1130: sz--;
1131:
1.141 schwarze 1132: /* Skip trailing whitespace. */
1133:
1.161 schwarze 1134: for (; sz; sz--)
1.141 schwarze 1135: if ( ! isspace((unsigned char)cp[sz-1]))
1136: break;
1137:
1138: /* Skip empty strings. */
1139:
1140: if (sz == 0)
1141: return;
1142:
1143: if (*dest == NULL) {
1144: *dest = mandoc_strndup(cp, sz);
1145: return;
1146: }
1147:
1148: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1149: free(*dest);
1150: *dest = cp;
1.138 schwarze 1151: }
1152:
1153: /* --- main functions of the roff parser ---------------------------------- */
1154:
1.8 schwarze 1155: /*
1.227 schwarze 1156: * In the current line, expand escape sequences that produce parsable
1157: * input text. Also check the syntax of the remaining escape sequences,
1158: * which typically produce output glyphs or change formatter state.
1.8 schwarze 1159: */
1.212 schwarze 1160: static int
1.227 schwarze 1161: roff_expand(struct roff *r, struct buf *buf, int ln, int pos, char newesc)
1.8 schwarze 1162: {
1.211 schwarze 1163: struct mctx *ctx; /* current macro call context */
1.81 schwarze 1164: char ubuf[24]; /* buffer to print the number */
1.200 schwarze 1165: struct roff_node *n; /* used for header comments */
1.78 schwarze 1166: const char *start; /* start of the string to process */
1.82 schwarze 1167: char *stesc; /* start of an escape sequence ('\\') */
1.224 schwarze 1168: const char *esct; /* type of esccape sequence */
1.200 schwarze 1169: char *ep; /* end of comment string */
1.23 schwarze 1170: const char *stnam; /* start of the name, after "[(*" */
1171: const char *cp; /* end of the name, e.g. before ']' */
1172: const char *res; /* the string to be substituted */
1.110 schwarze 1173: char *nbuf; /* new buffer to copy buf->buf to */
1.53 schwarze 1174: size_t maxl; /* expected length of the escape name */
1175: size_t naml; /* actual length of the escape name */
1.211 schwarze 1176: size_t asz; /* length of the replacement */
1177: size_t rsz; /* length of the rest of the string */
1.109 schwarze 1178: int inaml; /* length returned from mandoc_escape() */
1.53 schwarze 1179: int expand_count; /* to avoid infinite loops */
1.79 schwarze 1180: int npos; /* position in numeric expression */
1.91 schwarze 1181: int arg_complete; /* argument not interrupted by eol */
1.211 schwarze 1182: int quote_args; /* true for \\$@, false for \\$* */
1.175 schwarze 1183: int done; /* no more input available */
1.187 schwarze 1184: int deftype; /* type of definition to paste */
1.195 schwarze 1185: int rcsid; /* kind of RCS id seen */
1.224 schwarze 1186: enum mandocerr err; /* for escape sequence problems */
1.199 schwarze 1187: char sign; /* increment number register */
1.79 schwarze 1188: char term; /* character terminating the escape */
1.8 schwarze 1189:
1.175 schwarze 1190: /* Search forward for comments. */
1191:
1192: done = 0;
1193: start = buf->buf + pos;
1194: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1.227 schwarze 1195: if (stesc[0] != newesc || stesc[1] == '\0')
1.175 schwarze 1196: continue;
1197: stesc++;
1198: if (*stesc != '"' && *stesc != '#')
1199: continue;
1.185 schwarze 1200:
1201: /* Comment found, look for RCS id. */
1202:
1.195 schwarze 1203: rcsid = 0;
1.185 schwarze 1204: if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
1.195 schwarze 1205: rcsid = 1 << MANDOC_OS_OPENBSD;
1.185 schwarze 1206: cp += 8;
1207: } else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
1.195 schwarze 1208: rcsid = 1 << MANDOC_OS_NETBSD;
1.185 schwarze 1209: cp += 7;
1210: }
1211: if (cp != NULL &&
1212: isalnum((unsigned char)*cp) == 0 &&
1.186 schwarze 1213: strchr(cp, '$') != NULL) {
1.195 schwarze 1214: if (r->man->meta.rcsids & rcsid)
1.222 schwarze 1215: mandoc_msg(MANDOCERR_RCS_REP, ln,
1216: (int)(stesc - buf->buf) + 1,
1217: "%s", stesc + 1);
1.195 schwarze 1218: r->man->meta.rcsids |= rcsid;
1.186 schwarze 1219: }
1.185 schwarze 1220:
1221: /* Handle trailing whitespace. */
1222:
1.200 schwarze 1223: ep = strchr(stesc--, '\0') - 1;
1224: if (*ep == '\n') {
1.175 schwarze 1225: done = 1;
1.200 schwarze 1226: ep--;
1.175 schwarze 1227: }
1.200 schwarze 1228: if (*ep == ' ' || *ep == '\t')
1.222 schwarze 1229: mandoc_msg(MANDOCERR_SPACE_EOL,
1230: ln, (int)(ep - buf->buf), NULL);
1.200 schwarze 1231:
1232: /*
1233: * Save comments preceding the title macro
1234: * in the syntax tree.
1235: */
1236:
1.227 schwarze 1237: if (newesc != ASCII_ESC && r->format == 0) {
1.200 schwarze 1238: while (*ep == ' ' || *ep == '\t')
1239: ep--;
1240: ep[1] = '\0';
1241: n = roff_node_alloc(r->man,
1242: ln, stesc + 1 - buf->buf,
1243: ROFFT_COMMENT, TOKEN_NONE);
1244: n->string = mandoc_strdup(stesc + 2);
1245: roff_node_append(r->man, n);
1246: n->flags |= NODE_VALID | NODE_ENDED;
1247: r->man->next = ROFF_NEXT_SIBLING;
1248: }
1249:
1.206 schwarze 1250: /* Line continuation with comment. */
1251:
1252: if (stesc[1] == '#') {
1253: *stesc = '\0';
1.212 schwarze 1254: return ROFF_IGN | ROFF_APPEND;
1.206 schwarze 1255: }
1256:
1257: /* Discard normal comments. */
1.200 schwarze 1258:
1.207 schwarze 1259: while (stesc > start && stesc[-1] == ' ' &&
1260: (stesc == start + 1 || stesc[-2] != '\\'))
1.175 schwarze 1261: stesc--;
1262: *stesc = '\0';
1263: break;
1264: }
1265: if (stesc == start)
1266: return ROFF_CONT;
1267: stesc--;
1268:
1269: /* Notice the end of the input. */
1270:
1271: if (*stesc == '\n') {
1272: *stesc-- = '\0';
1273: done = 1;
1274: }
1275:
1.43 schwarze 1276: expand_count = 0;
1.175 schwarze 1277: while (stesc >= start) {
1.227 schwarze 1278: if (*stesc != newesc) {
1.43 schwarze 1279:
1.227 schwarze 1280: /*
1281: * If we have a non-standard escape character,
1282: * escape literal backslashes because all
1283: * processing in subsequent functions uses
1284: * the standard escaping rules.
1285: */
1.78 schwarze 1286:
1.227 schwarze 1287: if (newesc != ASCII_ESC && *stesc == '\\') {
1.175 schwarze 1288: *stesc = '\0';
1289: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1290: buf->buf, stesc + 1) + 1;
1291: start = nbuf + pos;
1292: stesc = nbuf + (stesc - buf->buf);
1293: free(buf->buf);
1294: buf->buf = nbuf;
1295: }
1.227 schwarze 1296:
1297: /* Search backwards for the next escape. */
1298:
1.175 schwarze 1299: stesc--;
1.78 schwarze 1300: continue;
1.175 schwarze 1301: }
1.78 schwarze 1302:
1303: /* If it is escaped, skip it. */
1304:
1305: for (cp = stesc - 1; cp >= start; cp--)
1.175 schwarze 1306: if (*cp != r->escape)
1.78 schwarze 1307: break;
1308:
1.110 schwarze 1309: if ((stesc - cp) % 2 == 0) {
1.175 schwarze 1310: while (stesc > cp)
1311: *stesc-- = '\\';
1.78 schwarze 1312: continue;
1.175 schwarze 1313: } else if (stesc[1] != '\0') {
1314: *stesc = '\\';
1315: } else {
1316: *stesc-- = '\0';
1317: if (done)
1318: continue;
1319: else
1.212 schwarze 1320: return ROFF_IGN | ROFF_APPEND;
1.78 schwarze 1321: }
1.23 schwarze 1322:
1.79 schwarze 1323: /* Decide whether to expand or to check only. */
1.23 schwarze 1324:
1.79 schwarze 1325: term = '\0';
1.78 schwarze 1326: cp = stesc + 1;
1.224 schwarze 1327: if (*cp == 'E')
1328: cp++;
1329: esct = cp;
1330: switch (*esct) {
1.80 schwarze 1331: case '*':
1.211 schwarze 1332: case '$':
1.53 schwarze 1333: res = NULL;
1334: break;
1.80 schwarze 1335: case 'B':
1336: case 'w':
1.79 schwarze 1337: term = cp[1];
1338: /* FALLTHROUGH */
1.80 schwarze 1339: case 'n':
1.199 schwarze 1340: sign = cp[1];
1341: if (sign == '+' || sign == '-')
1342: cp++;
1.53 schwarze 1343: res = ubuf;
1344: break;
1345: default:
1.224 schwarze 1346: err = MANDOCERR_OK;
1347: switch(mandoc_escape(&cp, &stnam, &inaml)) {
1348: case ESCAPE_SPECIAL:
1349: if (mchars_spec2cp(stnam, inaml) >= 0)
1350: break;
1351: /* FALLTHROUGH */
1352: case ESCAPE_ERROR:
1353: err = MANDOCERR_ESC_BAD;
1354: break;
1355: case ESCAPE_UNDEF:
1356: err = MANDOCERR_ESC_UNDEF;
1357: break;
1358: case ESCAPE_UNSUPP:
1359: err = MANDOCERR_ESC_UNSUPP;
1360: break;
1361: default:
1362: break;
1363: }
1364: if (err != MANDOCERR_OK)
1365: mandoc_msg(err, ln, (int)(stesc - buf->buf),
1.92 schwarze 1366: "%.*s", (int)(cp - stesc), stesc);
1.175 schwarze 1367: stesc--;
1.78 schwarze 1368: continue;
1.42 schwarze 1369: }
1370:
1.78 schwarze 1371: if (EXPAND_LIMIT < ++expand_count) {
1.222 schwarze 1372: mandoc_msg(MANDOCERR_ROFFLOOP,
1.110 schwarze 1373: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1374: return ROFF_IGN;
1.78 schwarze 1375: }
1.23 schwarze 1376:
1377: /*
1378: * The third character decides the length
1.53 schwarze 1379: * of the name of the string or register.
1.23 schwarze 1380: * Save a pointer to the name.
1381: */
1382:
1.110 schwarze 1383: if (term == '\0') {
1.79 schwarze 1384: switch (*++cp) {
1.80 schwarze 1385: case '\0':
1.79 schwarze 1386: maxl = 0;
1387: break;
1.80 schwarze 1388: case '(':
1.79 schwarze 1389: cp++;
1390: maxl = 2;
1391: break;
1.80 schwarze 1392: case '[':
1.79 schwarze 1393: cp++;
1394: term = ']';
1395: maxl = 0;
1396: break;
1397: default:
1398: maxl = 1;
1399: break;
1400: }
1401: } else {
1402: cp += 2;
1.8 schwarze 1403: maxl = 0;
1404: }
1.23 schwarze 1405: stnam = cp;
1.8 schwarze 1406:
1.23 schwarze 1407: /* Advance to the end of the name. */
1.8 schwarze 1408:
1.125 schwarze 1409: naml = 0;
1.91 schwarze 1410: arg_complete = 1;
1.125 schwarze 1411: while (maxl == 0 || naml < maxl) {
1.110 schwarze 1412: if (*cp == '\0') {
1.222 schwarze 1413: mandoc_msg(MANDOCERR_ESC_BAD, ln,
1414: (int)(stesc - buf->buf), "%s", stesc);
1.91 schwarze 1415: arg_complete = 0;
1.79 schwarze 1416: break;
1.42 schwarze 1417: }
1.110 schwarze 1418: if (maxl == 0 && *cp == term) {
1.79 schwarze 1419: cp++;
1.125 schwarze 1420: break;
1421: }
1.224 schwarze 1422: if (*cp++ != '\\' || *esct != 'w') {
1.125 schwarze 1423: naml++;
1424: continue;
1425: }
1426: switch (mandoc_escape(&cp, NULL, NULL)) {
1427: case ESCAPE_SPECIAL:
1428: case ESCAPE_UNICODE:
1429: case ESCAPE_NUMBERED:
1.224 schwarze 1430: case ESCAPE_UNDEF:
1.125 schwarze 1431: case ESCAPE_OVERSTRIKE:
1432: naml++;
1433: break;
1434: default:
1.8 schwarze 1435: break;
1.79 schwarze 1436: }
1.8 schwarze 1437: }
1438:
1.23 schwarze 1439: /*
1440: * Retrieve the replacement string; if it is
1441: * undefined, resume searching for escapes.
1442: */
1443:
1.224 schwarze 1444: switch (*esct) {
1.80 schwarze 1445: case '*':
1.187 schwarze 1446: if (arg_complete) {
1447: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1448: res = roff_getstrn(r, stnam, naml, &deftype);
1.203 schwarze 1449:
1450: /*
1451: * If not overriden, let \*(.T
1452: * through to the formatters.
1453: */
1454:
1455: if (res == NULL && naml == 2 &&
1456: stnam[0] == '.' && stnam[1] == 'T') {
1457: roff_setstrn(&r->strtab,
1458: ".T", 2, NULL, 0, 0);
1459: stesc--;
1460: continue;
1461: }
1.187 schwarze 1462: }
1.79 schwarze 1463: break;
1.211 schwarze 1464: case '$':
1465: if (r->mstackpos < 0) {
1.222 schwarze 1466: mandoc_msg(MANDOCERR_ARG_UNDEF, ln,
1467: (int)(stesc - buf->buf), "%.3s", stesc);
1.211 schwarze 1468: break;
1469: }
1470: ctx = r->mstack + r->mstackpos;
1.224 schwarze 1471: npos = esct[1] - '1';
1.211 schwarze 1472: if (npos >= 0 && npos <= 8) {
1473: res = npos < ctx->argc ?
1474: ctx->argv[npos] : "";
1475: break;
1476: }
1.224 schwarze 1477: if (esct[1] == '*')
1.211 schwarze 1478: quote_args = 0;
1.224 schwarze 1479: else if (esct[1] == '@')
1.211 schwarze 1480: quote_args = 1;
1481: else {
1.222 schwarze 1482: mandoc_msg(MANDOCERR_ARG_NONUM, ln,
1483: (int)(stesc - buf->buf), "%.3s", stesc);
1.211 schwarze 1484: break;
1485: }
1486: asz = 0;
1487: for (npos = 0; npos < ctx->argc; npos++) {
1488: if (npos)
1489: asz++; /* blank */
1490: if (quote_args)
1491: asz += 2; /* quotes */
1492: asz += strlen(ctx->argv[npos]);
1493: }
1494: if (asz != 3) {
1495: rsz = buf->sz - (stesc - buf->buf) - 3;
1496: if (asz < 3)
1497: memmove(stesc + asz, stesc + 3, rsz);
1498: buf->sz += asz - 3;
1499: nbuf = mandoc_realloc(buf->buf, buf->sz);
1500: start = nbuf + pos;
1501: stesc = nbuf + (stesc - buf->buf);
1502: buf->buf = nbuf;
1503: if (asz > 3)
1504: memmove(stesc + asz, stesc + 3, rsz);
1505: }
1506: for (npos = 0; npos < ctx->argc; npos++) {
1507: if (npos)
1508: *stesc++ = ' ';
1509: if (quote_args)
1510: *stesc++ = '"';
1511: cp = ctx->argv[npos];
1512: while (*cp != '\0')
1513: *stesc++ = *cp++;
1514: if (quote_args)
1515: *stesc++ = '"';
1516: }
1517: continue;
1.80 schwarze 1518: case 'B':
1.79 schwarze 1519: npos = 0;
1.91 schwarze 1520: ubuf[0] = arg_complete &&
1.133 schwarze 1521: roff_evalnum(r, ln, stnam, &npos,
1522: NULL, ROFFNUM_SCALE) &&
1.91 schwarze 1523: stnam + npos + 1 == cp ? '1' : '0';
1.79 schwarze 1524: ubuf[1] = '\0';
1525: break;
1.80 schwarze 1526: case 'n':
1.91 schwarze 1527: if (arg_complete)
1528: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.199 schwarze 1529: roff_getregn(r, stnam, naml, sign));
1.91 schwarze 1530: else
1531: ubuf[0] = '\0';
1.79 schwarze 1532: break;
1.80 schwarze 1533: case 'w':
1.91 schwarze 1534: /* use even incomplete args */
1.81 schwarze 1535: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.79 schwarze 1536: 24 * (int)naml);
1537: break;
1538: }
1.8 schwarze 1539:
1.110 schwarze 1540: if (res == NULL) {
1.224 schwarze 1541: if (*esct == '*')
1.222 schwarze 1542: mandoc_msg(MANDOCERR_STR_UNDEF,
1543: ln, (int)(stesc - buf->buf),
1.211 schwarze 1544: "%.*s", (int)naml, stnam);
1.37 schwarze 1545: res = "";
1.118 schwarze 1546: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1.222 schwarze 1547: mandoc_msg(MANDOCERR_ROFFLOOP,
1.118 schwarze 1548: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1549: return ROFF_IGN;
1.8 schwarze 1550: }
1551:
1.23 schwarze 1552: /* Replace the escape sequence by the string. */
1553:
1.82 schwarze 1554: *stesc = '\0';
1.110 schwarze 1555: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1556: buf->buf, res, cp) + 1;
1.8 schwarze 1557:
1.78 schwarze 1558: /* Prepare for the next replacement. */
1.8 schwarze 1559:
1.78 schwarze 1560: start = nbuf + pos;
1.110 schwarze 1561: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1562: free(buf->buf);
1563: buf->buf = nbuf;
1.42 schwarze 1564: }
1.149 schwarze 1565: return ROFF_CONT;
1.42 schwarze 1566: }
1.225 schwarze 1567:
1568: /*
1569: * Parse a quoted or unquoted roff-style request or macro argument.
1570: * Return a pointer to the parsed argument, which is either the original
1571: * pointer or advanced by one byte in case the argument is quoted.
1572: * NUL-terminate the argument in place.
1573: * Collapse pairs of quotes inside quoted arguments.
1574: * Advance the argument pointer to the next argument,
1575: * or to the NUL byte terminating the argument line.
1576: */
1577: char *
1.227 schwarze 1578: roff_getarg(struct roff *r, char **cpp, int ln, int *pos)
1.225 schwarze 1579: {
1.227 schwarze 1580: struct buf buf;
1581: char *cp, *start;
1582: int newesc, pairs, quoted, white;
1.225 schwarze 1583:
1584: /* Quoting can only start with a new word. */
1585: start = *cpp;
1586: quoted = 0;
1587: if ('"' == *start) {
1588: quoted = 1;
1589: start++;
1590: }
1591:
1.227 schwarze 1592: newesc = pairs = white = 0;
1.225 schwarze 1593: for (cp = start; '\0' != *cp; cp++) {
1594:
1595: /*
1596: * Move the following text left
1597: * after quoted quotes and after "\\" and "\t".
1598: */
1599: if (pairs)
1600: cp[-pairs] = cp[0];
1601:
1602: if ('\\' == cp[0]) {
1603: /*
1604: * In copy mode, translate double to single
1605: * backslashes and backslash-t to literal tabs.
1606: */
1607: switch (cp[1]) {
1608: case 'a':
1609: case 't':
1.226 schwarze 1610: cp[-pairs] = '\t';
1.227 schwarze 1611: pairs++;
1612: cp++;
1613: break;
1.225 schwarze 1614: case '\\':
1.227 schwarze 1615: newesc = 1;
1616: cp[-pairs] = ASCII_ESC;
1.225 schwarze 1617: pairs++;
1618: cp++;
1619: break;
1620: case ' ':
1621: /* Skip escaped blanks. */
1622: if (0 == quoted)
1623: cp++;
1624: break;
1625: default:
1626: break;
1627: }
1628: } else if (0 == quoted) {
1629: if (' ' == cp[0]) {
1630: /* Unescaped blanks end unquoted args. */
1631: white = 1;
1632: break;
1633: }
1634: } else if ('"' == cp[0]) {
1635: if ('"' == cp[1]) {
1636: /* Quoted quotes collapse. */
1637: pairs++;
1638: cp++;
1639: } else {
1640: /* Unquoted quotes end quoted args. */
1641: quoted = 2;
1642: break;
1643: }
1644: }
1645: }
1646:
1647: /* Quoted argument without a closing quote. */
1648: if (1 == quoted)
1649: mandoc_msg(MANDOCERR_ARG_QUOTE, ln, *pos, NULL);
1650:
1651: /* NUL-terminate this argument and move to the next one. */
1652: if (pairs)
1653: cp[-pairs] = '\0';
1654: if ('\0' != *cp) {
1655: *cp++ = '\0';
1656: while (' ' == *cp)
1657: cp++;
1658: }
1659: *pos += (int)(cp - start) + (quoted ? 1 : 0);
1660: *cpp = cp;
1661:
1662: if ('\0' == *cp && (white || ' ' == cp[-1]))
1663: mandoc_msg(MANDOCERR_SPACE_EOL, ln, *pos, NULL);
1664:
1.227 schwarze 1665: start = mandoc_strdup(start);
1666: if (newesc == 0)
1667: return start;
1668:
1669: buf.buf = start;
1670: buf.sz = strlen(start) + 1;
1671: buf.next = NULL;
1672: if (roff_expand(r, &buf, ln, 0, ASCII_ESC) & ROFF_IGN) {
1673: free(buf.buf);
1674: buf.buf = mandoc_strdup("");
1675: }
1676: return buf.buf;
1.225 schwarze 1677: }
1678:
1.42 schwarze 1679:
1680: /*
1.147 schwarze 1681: * Process text streams.
1.42 schwarze 1682: */
1.212 schwarze 1683: static int
1.177 schwarze 1684: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.42 schwarze 1685: {
1686: size_t sz;
1687: const char *start;
1.51 schwarze 1688: char *p;
1689: int isz;
1.42 schwarze 1690: enum mandoc_esc esc;
1691:
1.147 schwarze 1692: /* Spring the input line trap. */
1693:
1694: if (roffit_lines == 1) {
1695: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1696: free(buf->buf);
1697: buf->buf = p;
1698: buf->sz = isz + 1;
1699: *offs = 0;
1700: free(roffit_macro);
1701: roffit_lines = 0;
1.149 schwarze 1702: return ROFF_REPARSE;
1.147 schwarze 1703: } else if (roffit_lines > 1)
1704: --roffit_lines;
1705:
1.177 schwarze 1706: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1707: if (roffce_lines < 1) {
1708: r->man->last = roffce_node;
1709: r->man->next = ROFF_NEXT_SIBLING;
1710: roffce_lines = 0;
1711: roffce_node = NULL;
1712: } else
1713: roffce_lines--;
1714: }
1715:
1.147 schwarze 1716: /* Convert all breakable hyphens into ASCII_HYPH. */
1717:
1.110 schwarze 1718: start = p = buf->buf + pos;
1.42 schwarze 1719:
1.110 schwarze 1720: while (*p != '\0') {
1.42 schwarze 1721: sz = strcspn(p, "-\\");
1722: p += sz;
1723:
1.110 schwarze 1724: if (*p == '\0')
1.42 schwarze 1725: break;
1726:
1.110 schwarze 1727: if (*p == '\\') {
1.42 schwarze 1728: /* Skip over escapes. */
1729: p++;
1.62 schwarze 1730: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.110 schwarze 1731: if (esc == ESCAPE_ERROR)
1.42 schwarze 1732: break;
1.136 schwarze 1733: while (*p == '-')
1734: p++;
1.42 schwarze 1735: continue;
1736: } else if (p == start) {
1737: p++;
1738: continue;
1739: }
1740:
1.44 schwarze 1741: if (isalpha((unsigned char)p[-1]) &&
1742: isalpha((unsigned char)p[1]))
1.42 schwarze 1743: *p = ASCII_HYPH;
1744: p++;
1.8 schwarze 1745: }
1.149 schwarze 1746: return ROFF_CONT;
1.8 schwarze 1747: }
1748:
1.212 schwarze 1749: int
1.110 schwarze 1750: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.1 schwarze 1751: {
1.166 schwarze 1752: enum roff_tok t;
1.212 schwarze 1753: int e;
1.110 schwarze 1754: int pos; /* parse point */
1.115 schwarze 1755: int spos; /* saved parse point for messages */
1.110 schwarze 1756: int ppos; /* original offset in buf->buf */
1757: int ctl; /* macro line (boolean) */
1758:
1759: ppos = pos = *offs;
1.1 schwarze 1760:
1.102 schwarze 1761: /* Handle in-line equation delimiters. */
1762:
1.108 schwarze 1763: if (r->tbl == NULL &&
1764: r->last_eqn != NULL && r->last_eqn->delim &&
1.102 schwarze 1765: (r->eqn == NULL || r->eqn_inline)) {
1.110 schwarze 1766: e = roff_eqndelim(r, buf, pos);
1.102 schwarze 1767: if (e == ROFF_REPARSE)
1.149 schwarze 1768: return e;
1.102 schwarze 1769: assert(e == ROFF_CONT);
1770: }
1771:
1772: /* Expand some escape sequences. */
1.8 schwarze 1773:
1.227 schwarze 1774: e = roff_expand(r, buf, ln, pos, r->escape);
1.212 schwarze 1775: if ((e & ROFF_MASK) == ROFF_IGN)
1.149 schwarze 1776: return e;
1.110 schwarze 1777: assert(e == ROFF_CONT);
1.8 schwarze 1778:
1.110 schwarze 1779: ctl = roff_getcontrol(r, buf->buf, &pos);
1.35 schwarze 1780:
1.8 schwarze 1781: /*
1.2 schwarze 1782: * First, if a scope is open and we're not a macro, pass the
1.124 schwarze 1783: * text through the macro's filter.
1784: * Equations process all content themselves.
1785: * Tables process almost all content themselves, but we want
1786: * to warn about macros before passing it there.
1.2 schwarze 1787: */
1788:
1.124 schwarze 1789: if (r->last != NULL && ! ctl) {
1.2 schwarze 1790: t = r->last->tok;
1.110 schwarze 1791: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.212 schwarze 1792: if ((e & ROFF_MASK) == ROFF_IGN)
1.149 schwarze 1793: return e;
1.212 schwarze 1794: e &= ~ROFF_MASK;
1795: } else
1796: e = ROFF_IGN;
1.191 schwarze 1797: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1798: eqn_read(r->eqn, buf->buf + ppos);
1.212 schwarze 1799: return e;
1.191 schwarze 1800: }
1.193 schwarze 1801: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1802: tbl_read(r->tbl, ln, buf->buf, ppos);
1.218 schwarze 1803: roff_addtbl(r->man, ln, r->tbl);
1.212 schwarze 1804: return e;
1.193 schwarze 1805: }
1.124 schwarze 1806: if ( ! ctl)
1.212 schwarze 1807: return roff_parsetext(r, buf, pos, offs) | e;
1.100 schwarze 1808:
1809: /* Skip empty request lines. */
1810:
1.110 schwarze 1811: if (buf->buf[pos] == '"') {
1.222 schwarze 1812: mandoc_msg(MANDOCERR_COMMENT_BAD, ln, pos, NULL);
1.149 schwarze 1813: return ROFF_IGN;
1.110 schwarze 1814: } else if (buf->buf[pos] == '\0')
1.149 schwarze 1815: return ROFF_IGN;
1.2 schwarze 1816:
1817: /*
1818: * If a scope is open, go to the child handler for that macro,
1819: * as it may want to preprocess before doing anything with it.
1.32 schwarze 1820: * Don't do so if an equation is open.
1.2 schwarze 1821: */
1822:
1823: if (r->last) {
1.1 schwarze 1824: t = r->last->tok;
1.149 schwarze 1825: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1826: }
1827:
1.115 schwarze 1828: /* No scope is open. This is a new request or macro. */
1829:
1830: spos = pos;
1831: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1832:
1833: /* Tables ignore most macros. */
1834:
1.180 schwarze 1835: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.181 schwarze 1836: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.222 schwarze 1837: mandoc_msg(MANDOCERR_TBLMACRO,
1838: ln, pos, "%s", buf->buf + spos);
1.180 schwarze 1839: if (t != TOKEN_NONE)
1.149 schwarze 1840: return ROFF_IGN;
1.129 schwarze 1841: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1842: pos++;
1.163 schwarze 1843: while (buf->buf[pos] == ' ')
1.129 schwarze 1844: pos++;
1.193 schwarze 1845: tbl_read(r->tbl, ln, buf->buf, pos);
1.218 schwarze 1846: roff_addtbl(r->man, ln, r->tbl);
1.193 schwarze 1847: return ROFF_IGN;
1.115 schwarze 1848: }
1849:
1.177 schwarze 1850: /* For now, let high level macros abort .ce mode. */
1851:
1852: if (ctl && roffce_node != NULL &&
1.196 schwarze 1853: (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
1854: t == ROFF_TH || t == ROFF_TS)) {
1.177 schwarze 1855: r->man->last = roffce_node;
1856: r->man->next = ROFF_NEXT_SIBLING;
1857: roffce_lines = 0;
1858: roffce_node = NULL;
1859: }
1860:
1.2 schwarze 1861: /*
1.115 schwarze 1862: * This is neither a roff request nor a user-defined macro.
1863: * Let the standard macro set parsers handle it.
1.2 schwarze 1864: */
1865:
1.166 schwarze 1866: if (t == TOKEN_NONE)
1.149 schwarze 1867: return ROFF_CONT;
1.115 schwarze 1868:
1869: /* Execute a roff request or a user defined macro. */
1.1 schwarze 1870:
1.168 schwarze 1871: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.2 schwarze 1872: }
1873:
1.211 schwarze 1874: /*
1875: * Internal interface function to tell the roff parser that execution
1876: * of the current macro ended. This is required because macro
1877: * definitions usually do not end with a .return request.
1878: */
1879: void
1880: roff_userret(struct roff *r)
1881: {
1882: struct mctx *ctx;
1883: int i;
1884:
1885: assert(r->mstackpos >= 0);
1886: ctx = r->mstack + r->mstackpos;
1887: for (i = 0; i < ctx->argc; i++)
1888: free(ctx->argv[i]);
1889: ctx->argc = 0;
1890: r->mstackpos--;
1891: }
1892:
1.27 schwarze 1893: void
1.2 schwarze 1894: roff_endparse(struct roff *r)
1895: {
1.193 schwarze 1896: if (r->last != NULL)
1.222 schwarze 1897: mandoc_msg(MANDOCERR_BLK_NOEND, r->last->line,
1898: r->last->col, "%s", roff_name[r->last->tok]);
1.27 schwarze 1899:
1.193 schwarze 1900: if (r->eqn != NULL) {
1.222 schwarze 1901: mandoc_msg(MANDOCERR_BLK_NOEND,
1.191 schwarze 1902: r->eqn->node->line, r->eqn->node->pos, "EQ");
1903: eqn_parse(r->eqn);
1904: r->eqn = NULL;
1.32 schwarze 1905: }
1906:
1.193 schwarze 1907: if (r->tbl != NULL) {
1.218 schwarze 1908: tbl_end(r->tbl, 1);
1.193 schwarze 1909: r->tbl = NULL;
1.27 schwarze 1910: }
1.1 schwarze 1911: }
1912:
1913: /*
1914: * Parse a roff node's type from the input buffer. This must be in the
1915: * form of ".foo xxx" in the usual way.
1916: */
1.166 schwarze 1917: static enum roff_tok
1.87 schwarze 1918: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.1 schwarze 1919: {
1.87 schwarze 1920: char *cp;
1.16 schwarze 1921: const char *mac;
1922: size_t maclen;
1.187 schwarze 1923: int deftype;
1.166 schwarze 1924: enum roff_tok t;
1.1 schwarze 1925:
1.87 schwarze 1926: cp = buf + *pos;
1927:
1928: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.166 schwarze 1929: return TOKEN_NONE;
1.1 schwarze 1930:
1.87 schwarze 1931: mac = cp;
1932: maclen = roff_getname(r, &cp, ln, ppos);
1.1 schwarze 1933:
1.187 schwarze 1934: deftype = ROFFDEF_USER | ROFFDEF_REN;
1935: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
1936: switch (deftype) {
1937: case ROFFDEF_USER:
1938: t = ROFF_USERDEF;
1939: break;
1940: case ROFFDEF_REN:
1941: t = ROFF_RENAMED;
1942: break;
1943: default:
1944: t = roffhash_find(r->reqtab, mac, maclen);
1945: break;
1946: }
1.166 schwarze 1947: if (t != TOKEN_NONE)
1.87 schwarze 1948: *pos = cp - buf;
1.197 schwarze 1949: else if (deftype == ROFFDEF_UNDEF) {
1950: /* Using an undefined macro defines it to be empty. */
1951: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
1952: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
1953: }
1.149 schwarze 1954: return t;
1.1 schwarze 1955: }
1956:
1.138 schwarze 1957: /* --- handling of request blocks ----------------------------------------- */
1958:
1.212 schwarze 1959: static int
1.2 schwarze 1960: roff_cblock(ROFF_ARGS)
1.1 schwarze 1961: {
1962:
1.2 schwarze 1963: /*
1964: * A block-close `..' should only be invoked as a child of an
1965: * ignore macro, otherwise raise a warning and just ignore it.
1966: */
1967:
1.110 schwarze 1968: if (r->last == NULL) {
1.222 schwarze 1969: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.149 schwarze 1970: return ROFF_IGN;
1.2 schwarze 1971: }
1.1 schwarze 1972:
1.2 schwarze 1973: switch (r->last->tok) {
1.80 schwarze 1974: case ROFF_am:
1.93 schwarze 1975: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.80 schwarze 1976: case ROFF_ami:
1977: case ROFF_de:
1.23 schwarze 1978: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.80 schwarze 1979: case ROFF_dei:
1980: case ROFF_ig:
1.2 schwarze 1981: break;
1982: default:
1.222 schwarze 1983: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.149 schwarze 1984: return ROFF_IGN;
1.2 schwarze 1985: }
1986:
1.110 schwarze 1987: if (buf->buf[pos] != '\0')
1.222 schwarze 1988: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.110 schwarze 1989: ".. %s", buf->buf + pos);
1.2 schwarze 1990:
1991: roffnode_pop(r);
1992: roffnode_cleanscope(r);
1.149 schwarze 1993: return ROFF_IGN;
1.2 schwarze 1994:
1995: }
1.1 schwarze 1996:
1.212 schwarze 1997: static int
1.2 schwarze 1998: roffnode_cleanscope(struct roff *r)
1999: {
1.212 schwarze 2000: int inloop;
1.1 schwarze 2001:
1.212 schwarze 2002: inloop = 0;
2003: while (r->last != NULL) {
1.46 schwarze 2004: if (--r->last->endspan != 0)
1.2 schwarze 2005: break;
1.212 schwarze 2006: inloop += roffnode_pop(r);
1.2 schwarze 2007: }
1.212 schwarze 2008: return inloop;
1.2 schwarze 2009: }
1.1 schwarze 2010:
1.212 schwarze 2011: static int
1.68 schwarze 2012: roff_ccond(struct roff *r, int ln, int ppos)
1.2 schwarze 2013: {
2014: if (NULL == r->last) {
1.222 schwarze 2015: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.212 schwarze 2016: return 0;
1.2 schwarze 2017: }
1.1 schwarze 2018:
1.2 schwarze 2019: switch (r->last->tok) {
1.80 schwarze 2020: case ROFF_el:
2021: case ROFF_ie:
2022: case ROFF_if:
1.212 schwarze 2023: case ROFF_while:
1.2 schwarze 2024: break;
2025: default:
1.222 schwarze 2026: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.212 schwarze 2027: return 0;
1.2 schwarze 2028: }
1.1 schwarze 2029:
1.2 schwarze 2030: if (r->last->endspan > -1) {
1.222 schwarze 2031: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.212 schwarze 2032: return 0;
1.2 schwarze 2033: }
2034:
1.212 schwarze 2035: return roffnode_pop(r) + roffnode_cleanscope(r);
1.1 schwarze 2036: }
2037:
1.212 schwarze 2038: static int
1.2 schwarze 2039: roff_block(ROFF_ARGS)
1.1 schwarze 2040: {
1.187 schwarze 2041: const char *name, *value;
2042: char *call, *cp, *iname, *rname;
2043: size_t csz, namesz, rsz;
2044: int deftype;
1.16 schwarze 2045:
1.93 schwarze 2046: /* Ignore groff compatibility mode for now. */
1.2 schwarze 2047:
1.110 schwarze 2048: if (tok == ROFF_de1)
1.93 schwarze 2049: tok = ROFF_de;
1.123 schwarze 2050: else if (tok == ROFF_dei1)
2051: tok = ROFF_dei;
1.110 schwarze 2052: else if (tok == ROFF_am1)
1.93 schwarze 2053: tok = ROFF_am;
1.123 schwarze 2054: else if (tok == ROFF_ami1)
2055: tok = ROFF_ami;
1.93 schwarze 2056:
2057: /* Parse the macro name argument. */
2058:
1.110 schwarze 2059: cp = buf->buf + pos;
2060: if (tok == ROFF_ig) {
1.93 schwarze 2061: iname = NULL;
2062: namesz = 0;
2063: } else {
2064: iname = cp;
2065: namesz = roff_getname(r, &cp, ln, ppos);
2066: iname[namesz] = '\0';
2067: }
1.22 schwarze 2068:
1.93 schwarze 2069: /* Resolve the macro name argument if it is indirect. */
1.22 schwarze 2070:
1.110 schwarze 2071: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.187 schwarze 2072: deftype = ROFFDEF_USER;
2073: name = roff_getstrn(r, iname, namesz, &deftype);
2074: if (name == NULL) {
1.222 schwarze 2075: mandoc_msg(MANDOCERR_STR_UNDEF,
2076: ln, (int)(iname - buf->buf),
1.93 schwarze 2077: "%.*s", (int)namesz, iname);
2078: namesz = 0;
2079: } else
2080: namesz = strlen(name);
2081: } else
2082: name = iname;
1.22 schwarze 2083:
1.110 schwarze 2084: if (namesz == 0 && tok != ROFF_ig) {
1.222 schwarze 2085: mandoc_msg(MANDOCERR_REQ_EMPTY,
2086: ln, ppos, "%s", roff_name[tok]);
1.149 schwarze 2087: return ROFF_IGN;
1.93 schwarze 2088: }
1.2 schwarze 2089:
1.16 schwarze 2090: roffnode_push(r, tok, name, ln, ppos);
2091:
2092: /*
2093: * At the beginning of a `de' macro, clear the existing string
2094: * with the same name, if there is one. New content will be
1.66 schwarze 2095: * appended from roff_block_text() in multiline mode.
1.16 schwarze 2096: */
1.22 schwarze 2097:
1.183 schwarze 2098: if (tok == ROFF_de || tok == ROFF_dei) {
1.86 schwarze 2099: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.183 schwarze 2100: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.187 schwarze 2101: } else if (tok == ROFF_am || tok == ROFF_ami) {
2102: deftype = ROFFDEF_ANY;
2103: value = roff_getstrn(r, iname, namesz, &deftype);
2104: switch (deftype) { /* Before appending, ... */
2105: case ROFFDEF_PRE: /* copy predefined to user-defined. */
2106: roff_setstrn(&r->strtab, name, namesz,
2107: value, strlen(value), 0);
2108: break;
2109: case ROFFDEF_REN: /* call original standard macro. */
2110: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2111: (int)strlen(value), value);
2112: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2113: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
2114: free(call);
2115: break;
2116: case ROFFDEF_STD: /* rename and call standard macro. */
2117: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
2118: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
2119: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2120: (int)rsz, rname);
2121: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2122: free(call);
2123: free(rname);
2124: break;
2125: default:
2126: break;
2127: }
1.183 schwarze 2128: }
1.2 schwarze 2129:
1.110 schwarze 2130: if (*cp == '\0')
1.149 schwarze 2131: return ROFF_IGN;
1.1 schwarze 2132:
1.93 schwarze 2133: /* Get the custom end marker. */
1.22 schwarze 2134:
1.93 schwarze 2135: iname = cp;
1.86 schwarze 2136: namesz = roff_getname(r, &cp, ln, ppos);
1.93 schwarze 2137:
2138: /* Resolve the end marker if it is indirect. */
2139:
1.110 schwarze 2140: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.187 schwarze 2141: deftype = ROFFDEF_USER;
2142: name = roff_getstrn(r, iname, namesz, &deftype);
2143: if (name == NULL) {
1.222 schwarze 2144: mandoc_msg(MANDOCERR_STR_UNDEF,
2145: ln, (int)(iname - buf->buf),
1.93 schwarze 2146: "%.*s", (int)namesz, iname);
2147: namesz = 0;
2148: } else
2149: namesz = strlen(name);
2150: } else
2151: name = iname;
2152:
1.86 schwarze 2153: if (namesz)
2154: r->last->end = mandoc_strndup(name, namesz);
1.2 schwarze 2155:
1.110 schwarze 2156: if (*cp != '\0')
1.222 schwarze 2157: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.167 schwarze 2158: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.1 schwarze 2159:
1.149 schwarze 2160: return ROFF_IGN;
1.1 schwarze 2161: }
2162:
1.212 schwarze 2163: static int
1.2 schwarze 2164: roff_block_sub(ROFF_ARGS)
1.1 schwarze 2165: {
1.166 schwarze 2166: enum roff_tok t;
1.2 schwarze 2167: int i, j;
2168:
2169: /*
2170: * First check whether a custom macro exists at this level. If
2171: * it does, then check against it. This is some of groff's
2172: * stranger behaviours. If we encountered a custom end-scope
2173: * tag and that tag also happens to be a "real" macro, then we
2174: * need to try interpreting it again as a real macro. If it's
2175: * not, then return ignore. Else continue.
2176: */
2177:
2178: if (r->last->end) {
1.35 schwarze 2179: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.110 schwarze 2180: if (buf->buf[i] != r->last->end[j])
1.2 schwarze 2181: break;
1.1 schwarze 2182:
1.110 schwarze 2183: if (r->last->end[j] == '\0' &&
2184: (buf->buf[i] == '\0' ||
2185: buf->buf[i] == ' ' ||
2186: buf->buf[i] == '\t')) {
1.2 schwarze 2187: roffnode_pop(r);
2188: roffnode_cleanscope(r);
1.1 schwarze 2189:
1.110 schwarze 2190: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.35 schwarze 2191: i++;
2192:
2193: pos = i;
1.110 schwarze 2194: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.166 schwarze 2195: TOKEN_NONE)
1.149 schwarze 2196: return ROFF_RERUN;
2197: return ROFF_IGN;
1.2 schwarze 2198: }
1.1 schwarze 2199: }
2200:
1.2 schwarze 2201: /*
2202: * If we have no custom end-query or lookup failed, then try
2203: * pulling it out of the hashtable.
2204: */
1.1 schwarze 2205:
1.110 schwarze 2206: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.1 schwarze 2207:
1.110 schwarze 2208: if (t != ROFF_cblock) {
2209: if (tok != ROFF_ig)
2210: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.149 schwarze 2211: return ROFF_IGN;
1.16 schwarze 2212: }
1.1 schwarze 2213:
1.149 schwarze 2214: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 2215: }
2216:
1.212 schwarze 2217: static int
1.2 schwarze 2218: roff_block_text(ROFF_ARGS)
2219: {
2220:
1.110 schwarze 2221: if (tok != ROFF_ig)
2222: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.16 schwarze 2223:
1.149 schwarze 2224: return ROFF_IGN;
1.2 schwarze 2225: }
2226:
1.212 schwarze 2227: static int
1.2 schwarze 2228: roff_cond_sub(ROFF_ARGS)
2229: {
1.212 schwarze 2230: char *ep;
2231: int endloop, irc, rr;
1.166 schwarze 2232: enum roff_tok t;
1.2 schwarze 2233:
1.212 schwarze 2234: irc = ROFF_IGN;
1.2 schwarze 2235: rr = r->last->rule;
1.212 schwarze 2236: endloop = tok != ROFF_while ? ROFF_IGN :
2237: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2238: if (roffnode_cleanscope(r))
2239: irc |= endloop;
1.39 schwarze 2240:
1.69 schwarze 2241: /*
2242: * If `\}' occurs on a macro line without a preceding macro,
2243: * drop the line completely.
2244: */
2245:
1.110 schwarze 2246: ep = buf->buf + pos;
2247: if (ep[0] == '\\' && ep[1] == '}')
1.71 schwarze 2248: rr = 0;
1.69 schwarze 2249:
1.215 schwarze 2250: /*
2251: * The closing delimiter `\}' rewinds the conditional scope
2252: * but is otherwise ignored when interpreting the line.
2253: */
1.39 schwarze 2254:
1.110 schwarze 2255: while ((ep = strchr(ep, '\\')) != NULL) {
1.190 schwarze 2256: switch (ep[1]) {
2257: case '}':
2258: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1.212 schwarze 2259: if (roff_ccond(r, ln, ep - buf->buf))
2260: irc |= endloop;
1.190 schwarze 2261: break;
2262: case '\0':
2263: ++ep;
2264: break;
2265: default:
2266: ep += 2;
2267: break;
1.70 schwarze 2268: }
1.50 schwarze 2269: }
1.190 schwarze 2270:
2271: /*
2272: * Fully handle known macros when they are structurally
2273: * required or when the conditional evaluated to true.
2274: */
2275:
2276: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.212 schwarze 2277: irc |= t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT) ?
2278: (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs) :
2279: rr ? ROFF_CONT : ROFF_IGN;
2280: return irc;
1.2 schwarze 2281: }
2282:
1.212 schwarze 2283: static int
1.2 schwarze 2284: roff_cond_text(ROFF_ARGS)
2285: {
1.37 schwarze 2286: char *ep;
1.212 schwarze 2287: int endloop, irc, rr;
1.2 schwarze 2288:
1.212 schwarze 2289: irc = ROFF_IGN;
1.2 schwarze 2290: rr = r->last->rule;
1.212 schwarze 2291: endloop = tok != ROFF_while ? ROFF_IGN :
2292: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2293: if (roffnode_cleanscope(r))
2294: irc |= endloop;
1.1 schwarze 2295:
1.215 schwarze 2296: /*
2297: * If `\}' occurs on a text line with neither preceding
2298: * nor following characters, drop the line completely.
2299: */
2300:
1.110 schwarze 2301: ep = buf->buf + pos;
1.215 schwarze 2302: if (strcmp(ep, "\\}") == 0)
2303: rr = 0;
2304:
2305: /*
2306: * The closing delimiter `\}' rewinds the conditional scope
2307: * but is otherwise ignored when interpreting the line.
2308: */
2309:
1.110 schwarze 2310: while ((ep = strchr(ep, '\\')) != NULL) {
1.215 schwarze 2311: switch (ep[1]) {
2312: case '}':
2313: memmove(ep, ep + 2, strlen(ep + 2) + 1);
2314: if (roff_ccond(r, ln, ep - buf->buf))
1.212 schwarze 2315: irc |= endloop;
1.215 schwarze 2316: break;
2317: case '\0':
2318: ++ep;
2319: break;
2320: default:
2321: ep += 2;
2322: break;
1.70 schwarze 2323: }
1.2 schwarze 2324: }
1.212 schwarze 2325: if (rr)
2326: irc |= ROFF_CONT;
2327: return irc;
1.2 schwarze 2328: }
2329:
1.138 schwarze 2330: /* --- handling of numeric and conditional expressions -------------------- */
2331:
1.77 schwarze 2332: /*
2333: * Parse a single signed integer number. Stop at the first non-digit.
2334: * If there is at least one digit, return success and advance the
2335: * parse point, else return failure and let the parse point unchanged.
2336: * Ignore overflows, treat them just like the C language.
2337: */
1.56 schwarze 2338: static int
1.133 schwarze 2339: roff_getnum(const char *v, int *pos, int *res, int flags)
1.56 schwarze 2340: {
1.133 schwarze 2341: int myres, scaled, n, p;
1.79 schwarze 2342:
2343: if (NULL == res)
2344: res = &myres;
1.56 schwarze 2345:
2346: p = *pos;
2347: n = v[p] == '-';
1.133 schwarze 2348: if (n || v[p] == '+')
1.56 schwarze 2349: p++;
2350:
1.133 schwarze 2351: if (flags & ROFFNUM_WHITE)
2352: while (isspace((unsigned char)v[p]))
2353: p++;
2354:
1.56 schwarze 2355: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.77 schwarze 2356: *res = 10 * *res + v[p] - '0';
1.56 schwarze 2357: if (p == *pos + n)
2358: return 0;
2359:
2360: if (n)
2361: *res = -*res;
2362:
1.126 schwarze 2363: /* Each number may be followed by one optional scaling unit. */
2364:
2365: switch (v[p]) {
2366: case 'f':
1.133 schwarze 2367: scaled = *res * 65536;
1.126 schwarze 2368: break;
2369: case 'i':
1.133 schwarze 2370: scaled = *res * 240;
1.126 schwarze 2371: break;
2372: case 'c':
1.133 schwarze 2373: scaled = *res * 240 / 2.54;
1.126 schwarze 2374: break;
2375: case 'v':
2376: case 'P':
1.133 schwarze 2377: scaled = *res * 40;
1.126 schwarze 2378: break;
2379: case 'm':
2380: case 'n':
1.133 schwarze 2381: scaled = *res * 24;
1.126 schwarze 2382: break;
2383: case 'p':
1.133 schwarze 2384: scaled = *res * 10 / 3;
1.126 schwarze 2385: break;
2386: case 'u':
1.133 schwarze 2387: scaled = *res;
1.126 schwarze 2388: break;
2389: case 'M':
1.133 schwarze 2390: scaled = *res * 6 / 25;
1.126 schwarze 2391: break;
2392: default:
1.133 schwarze 2393: scaled = *res;
1.126 schwarze 2394: p--;
2395: break;
2396: }
1.133 schwarze 2397: if (flags & ROFFNUM_SCALE)
2398: *res = scaled;
1.126 schwarze 2399:
2400: *pos = p + 1;
1.149 schwarze 2401: return 1;
1.56 schwarze 2402: }
2403:
1.71 schwarze 2404: /*
2405: * Evaluate a string comparison condition.
2406: * The first character is the delimiter.
2407: * Succeed if the string up to its second occurrence
2408: * matches the string up to its third occurence.
2409: * Advance the cursor after the third occurrence
2410: * or lacking that, to the end of the line.
2411: */
2412: static int
2413: roff_evalstrcond(const char *v, int *pos)
2414: {
2415: const char *s1, *s2, *s3;
2416: int match;
2417:
2418: match = 0;
2419: s1 = v + *pos; /* initial delimiter */
2420: s2 = s1 + 1; /* for scanning the first string */
2421: s3 = strchr(s2, *s1); /* for scanning the second string */
2422:
2423: if (NULL == s3) /* found no middle delimiter */
2424: goto out;
2425:
2426: while ('\0' != *++s3) {
2427: if (*s2 != *s3) { /* mismatch */
2428: s3 = strchr(s3, *s1);
2429: break;
2430: }
2431: if (*s3 == *s1) { /* found the final delimiter */
2432: match = 1;
2433: break;
2434: }
2435: s2++;
2436: }
2437:
2438: out:
2439: if (NULL == s3)
2440: s3 = strchr(s2, '\0');
1.114 schwarze 2441: else if (*s3 != '\0')
1.71 schwarze 2442: s3++;
2443: *pos = s3 - v;
1.149 schwarze 2444: return match;
1.71 schwarze 2445: }
2446:
1.77 schwarze 2447: /*
2448: * Evaluate an optionally negated single character, numerical,
2449: * or string condition.
2450: */
1.71 schwarze 2451: static int
1.143 schwarze 2452: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.5 schwarze 2453: {
1.208 schwarze 2454: const char *start, *end;
2455: char *cp, *name;
2456: size_t sz;
2457: int deftype, len, number, savepos, istrue, wanttrue;
1.5 schwarze 2458:
1.71 schwarze 2459: if ('!' == v[*pos]) {
2460: wanttrue = 0;
2461: (*pos)++;
2462: } else
2463: wanttrue = 1;
2464:
1.5 schwarze 2465: switch (v[*pos]) {
1.112 schwarze 2466: case '\0':
1.149 schwarze 2467: return 0;
1.80 schwarze 2468: case 'n':
2469: case 'o':
1.5 schwarze 2470: (*pos)++;
1.149 schwarze 2471: return wanttrue;
1.80 schwarze 2472: case 'e':
2473: case 't':
1.111 schwarze 2474: case 'v':
1.5 schwarze 2475: (*pos)++;
1.149 schwarze 2476: return !wanttrue;
1.208 schwarze 2477: case 'c':
2478: do {
2479: (*pos)++;
2480: } while (v[*pos] == ' ');
2481:
2482: /*
2483: * Quirk for groff compatibility:
2484: * The horizontal tab is neither available nor unavailable.
2485: */
2486:
2487: if (v[*pos] == '\t') {
2488: (*pos)++;
2489: return 0;
2490: }
2491:
2492: /* Printable ASCII characters are available. */
2493:
2494: if (v[*pos] != '\\') {
2495: (*pos)++;
2496: return wanttrue;
2497: }
2498:
2499: end = v + ++*pos;
2500: switch (mandoc_escape(&end, &start, &len)) {
2501: case ESCAPE_SPECIAL:
2502: istrue = mchars_spec2cp(start, len) != -1;
2503: break;
2504: case ESCAPE_UNICODE:
2505: istrue = 1;
2506: break;
2507: case ESCAPE_NUMBERED:
2508: istrue = mchars_num2char(start, len) != -1;
2509: break;
2510: default:
2511: istrue = !wanttrue;
2512: break;
2513: }
2514: *pos = end - v;
2515: return istrue == wanttrue;
1.182 schwarze 2516: case 'd':
1.143 schwarze 2517: case 'r':
1.182 schwarze 2518: cp = v + *pos + 1;
2519: while (*cp == ' ')
2520: cp++;
2521: name = cp;
2522: sz = roff_getname(r, &cp, ln, cp - v);
1.187 schwarze 2523: if (sz == 0)
2524: istrue = 0;
2525: else if (v[*pos] == 'r')
2526: istrue = roff_hasregn(r, name, sz);
2527: else {
2528: deftype = ROFFDEF_ANY;
2529: roff_getstrn(r, name, sz, &deftype);
2530: istrue = !!deftype;
2531: }
1.143 schwarze 2532: *pos = cp - v;
1.182 schwarze 2533: return istrue == wanttrue;
1.5 schwarze 2534: default:
2535: break;
2536: }
2537:
1.113 schwarze 2538: savepos = *pos;
1.133 schwarze 2539: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.149 schwarze 2540: return (number > 0) == wanttrue;
1.113 schwarze 2541: else if (*pos == savepos)
1.149 schwarze 2542: return roff_evalstrcond(v, pos) == wanttrue;
1.77 schwarze 2543: else
1.149 schwarze 2544: return 0;
1.5 schwarze 2545: }
2546:
1.212 schwarze 2547: static int
1.21 schwarze 2548: roff_line_ignore(ROFF_ARGS)
1.6 schwarze 2549: {
1.30 schwarze 2550:
1.149 schwarze 2551: return ROFF_IGN;
1.21 schwarze 2552: }
2553:
1.212 schwarze 2554: static int
1.123 schwarze 2555: roff_insec(ROFF_ARGS)
2556: {
2557:
1.222 schwarze 2558: mandoc_msg(MANDOCERR_REQ_INSEC, ln, ppos, "%s", roff_name[tok]);
1.149 schwarze 2559: return ROFF_IGN;
1.123 schwarze 2560: }
2561:
1.212 schwarze 2562: static int
1.123 schwarze 2563: roff_unsupp(ROFF_ARGS)
2564: {
2565:
1.222 schwarze 2566: mandoc_msg(MANDOCERR_REQ_UNSUPP, ln, ppos, "%s", roff_name[tok]);
1.149 schwarze 2567: return ROFF_IGN;
1.123 schwarze 2568: }
2569:
1.212 schwarze 2570: static int
1.2 schwarze 2571: roff_cond(ROFF_ARGS)
2572: {
1.212 schwarze 2573: int irc;
1.46 schwarze 2574:
2575: roffnode_push(r, tok, NULL, ln, ppos);
1.2 schwarze 2576:
1.80 schwarze 2577: /*
1.35 schwarze 2578: * An `.el' has no conditional body: it will consume the value
2579: * of the current rstack entry set in prior `ie' calls or
1.80 schwarze 2580: * defaults to DENY.
1.35 schwarze 2581: *
2582: * If we're not an `el', however, then evaluate the conditional.
2583: */
1.1 schwarze 2584:
1.110 schwarze 2585: r->last->rule = tok == ROFF_el ?
1.80 schwarze 2586: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.110 schwarze 2587: roff_evalcond(r, ln, buf->buf, &pos);
1.2 schwarze 2588:
1.35 schwarze 2589: /*
2590: * An if-else will put the NEGATION of the current evaluated
2591: * conditional into the stack of rules.
2592: */
2593:
1.110 schwarze 2594: if (tok == ROFF_ie) {
1.96 schwarze 2595: if (r->rstackpos + 1 == r->rstacksz) {
2596: r->rstacksz += 16;
2597: r->rstack = mandoc_reallocarray(r->rstack,
2598: r->rstacksz, sizeof(int));
1.35 schwarze 2599: }
1.71 schwarze 2600: r->rstack[++r->rstackpos] = !r->last->rule;
1.2 schwarze 2601: }
1.5 schwarze 2602:
2603: /* If the parent has false as its rule, then so do we. */
2604:
1.71 schwarze 2605: if (r->last->parent && !r->last->parent->rule)
2606: r->last->rule = 0;
1.5 schwarze 2607:
2608: /*
1.46 schwarze 2609: * Determine scope.
2610: * If there is nothing on the line after the conditional,
2611: * not even whitespace, use next-line scope.
1.212 schwarze 2612: * Except that .while does not support next-line scope.
1.5 schwarze 2613: */
1.2 schwarze 2614:
1.212 schwarze 2615: if (buf->buf[pos] == '\0' && tok != ROFF_while) {
1.46 schwarze 2616: r->last->endspan = 2;
2617: goto out;
2618: }
2619:
1.110 schwarze 2620: while (buf->buf[pos] == ' ')
1.46 schwarze 2621: pos++;
2622:
2623: /* An opening brace requests multiline scope. */
1.2 schwarze 2624:
1.110 schwarze 2625: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.2 schwarze 2626: r->last->endspan = -1;
2627: pos += 2;
1.144 schwarze 2628: while (buf->buf[pos] == ' ')
2629: pos++;
1.46 schwarze 2630: goto out;
1.80 schwarze 2631: }
1.2 schwarze 2632:
2633: /*
1.46 schwarze 2634: * Anything else following the conditional causes
2635: * single-line scope. Warn if the scope contains
2636: * nothing but trailing whitespace.
1.2 schwarze 2637: */
2638:
1.110 schwarze 2639: if (buf->buf[pos] == '\0')
1.222 schwarze 2640: mandoc_msg(MANDOCERR_COND_EMPTY,
2641: ln, ppos, "%s", roff_name[tok]);
1.2 schwarze 2642:
1.46 schwarze 2643: r->last->endspan = 1;
1.1 schwarze 2644:
1.46 schwarze 2645: out:
1.2 schwarze 2646: *offs = pos;
1.212 schwarze 2647: irc = ROFF_RERUN;
2648: if (tok == ROFF_while)
2649: irc |= ROFF_WHILE;
2650: return irc;
1.1 schwarze 2651: }
2652:
1.212 schwarze 2653: static int
1.7 schwarze 2654: roff_ds(ROFF_ARGS)
2655: {
1.85 schwarze 2656: char *string;
2657: const char *name;
2658: size_t namesz;
1.10 schwarze 2659:
1.123 schwarze 2660: /* Ignore groff compatibility mode for now. */
2661:
2662: if (tok == ROFF_ds1)
2663: tok = ROFF_ds;
2664: else if (tok == ROFF_as1)
2665: tok = ROFF_as;
2666:
1.10 schwarze 2667: /*
1.85 schwarze 2668: * The first word is the name of the string.
2669: * If it is empty or terminated by an escape sequence,
2670: * abort the `ds' request without defining anything.
1.10 schwarze 2671: */
1.7 schwarze 2672:
1.110 schwarze 2673: name = string = buf->buf + pos;
2674: if (*name == '\0')
1.149 schwarze 2675: return ROFF_IGN;
1.7 schwarze 2676:
1.85 schwarze 2677: namesz = roff_getname(r, &string, ln, pos);
1.110 schwarze 2678: if (name[namesz] == '\\')
1.149 schwarze 2679: return ROFF_IGN;
1.85 schwarze 2680:
2681: /* Read past the initial double-quote, if any. */
1.110 schwarze 2682: if (*string == '"')
1.7 schwarze 2683: string++;
2684:
1.10 schwarze 2685: /* The rest is the value. */
1.85 schwarze 2686: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2687: ROFF_as == tok);
1.183 schwarze 2688: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.149 schwarze 2689: return ROFF_IGN;
1.7 schwarze 2690: }
2691:
1.77 schwarze 2692: /*
2693: * Parse a single operator, one or two characters long.
2694: * If the operator is recognized, return success and advance the
2695: * parse point, else return failure and let the parse point unchanged.
2696: */
2697: static int
2698: roff_getop(const char *v, int *pos, char *res)
2699: {
2700:
2701: *res = v[*pos];
2702:
2703: switch (*res) {
1.80 schwarze 2704: case '+':
2705: case '-':
2706: case '*':
2707: case '/':
2708: case '%':
2709: case '&':
2710: case ':':
1.77 schwarze 2711: break;
2712: case '<':
2713: switch (v[*pos + 1]) {
1.80 schwarze 2714: case '=':
1.77 schwarze 2715: *res = 'l';
2716: (*pos)++;
2717: break;
1.80 schwarze 2718: case '>':
1.77 schwarze 2719: *res = '!';
2720: (*pos)++;
2721: break;
1.80 schwarze 2722: case '?':
1.77 schwarze 2723: *res = 'i';
2724: (*pos)++;
2725: break;
2726: default:
2727: break;
2728: }
2729: break;
2730: case '>':
2731: switch (v[*pos + 1]) {
1.80 schwarze 2732: case '=':
1.77 schwarze 2733: *res = 'g';
2734: (*pos)++;
2735: break;
1.80 schwarze 2736: case '?':
1.77 schwarze 2737: *res = 'a';
2738: (*pos)++;
2739: break;
2740: default:
2741: break;
2742: }
2743: break;
2744: case '=':
2745: if ('=' == v[*pos + 1])
2746: (*pos)++;
2747: break;
2748: default:
1.149 schwarze 2749: return 0;
1.77 schwarze 2750: }
2751: (*pos)++;
2752:
1.149 schwarze 2753: return *res;
1.77 schwarze 2754: }
2755:
2756: /*
2757: * Evaluate either a parenthesized numeric expression
2758: * or a single signed integer number.
2759: */
2760: static int
1.106 schwarze 2761: roff_evalpar(struct roff *r, int ln,
1.133 schwarze 2762: const char *v, int *pos, int *res, int flags)
1.77 schwarze 2763: {
2764:
2765: if ('(' != v[*pos])
1.149 schwarze 2766: return roff_getnum(v, pos, res, flags);
1.77 schwarze 2767:
2768: (*pos)++;
1.133 schwarze 2769: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.149 schwarze 2770: return 0;
1.77 schwarze 2771:
1.79 schwarze 2772: /*
2773: * Omission of the closing parenthesis
2774: * is an error in validation mode,
2775: * but ignored in evaluation mode.
2776: */
2777:
1.77 schwarze 2778: if (')' == v[*pos])
2779: (*pos)++;
1.79 schwarze 2780: else if (NULL == res)
1.149 schwarze 2781: return 0;
1.77 schwarze 2782:
1.149 schwarze 2783: return 1;
1.77 schwarze 2784: }
2785:
2786: /*
2787: * Evaluate a complete numeric expression.
2788: * Proceed left to right, there is no concept of precedence.
2789: */
2790: static int
1.106 schwarze 2791: roff_evalnum(struct roff *r, int ln, const char *v,
1.133 schwarze 2792: int *pos, int *res, int flags)
1.77 schwarze 2793: {
2794: int mypos, operand2;
2795: char operator;
2796:
2797: if (NULL == pos) {
2798: mypos = 0;
2799: pos = &mypos;
2800: }
2801:
1.133 schwarze 2802: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2803: while (isspace((unsigned char)v[*pos]))
2804: (*pos)++;
2805:
1.133 schwarze 2806: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.149 schwarze 2807: return 0;
1.77 schwarze 2808:
2809: while (1) {
1.133 schwarze 2810: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2811: while (isspace((unsigned char)v[*pos]))
2812: (*pos)++;
2813:
2814: if ( ! roff_getop(v, pos, &operator))
2815: break;
2816:
1.133 schwarze 2817: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2818: while (isspace((unsigned char)v[*pos]))
2819: (*pos)++;
2820:
1.133 schwarze 2821: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.149 schwarze 2822: return 0;
1.77 schwarze 2823:
1.133 schwarze 2824: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2825: while (isspace((unsigned char)v[*pos]))
2826: (*pos)++;
1.79 schwarze 2827:
2828: if (NULL == res)
2829: continue;
1.77 schwarze 2830:
2831: switch (operator) {
1.80 schwarze 2832: case '+':
1.77 schwarze 2833: *res += operand2;
2834: break;
1.80 schwarze 2835: case '-':
1.77 schwarze 2836: *res -= operand2;
2837: break;
1.80 schwarze 2838: case '*':
1.77 schwarze 2839: *res *= operand2;
2840: break;
1.80 schwarze 2841: case '/':
1.116 schwarze 2842: if (operand2 == 0) {
1.106 schwarze 2843: mandoc_msg(MANDOCERR_DIVZERO,
1.222 schwarze 2844: ln, *pos, "%s", v);
1.106 schwarze 2845: *res = 0;
2846: break;
2847: }
1.77 schwarze 2848: *res /= operand2;
2849: break;
1.80 schwarze 2850: case '%':
1.116 schwarze 2851: if (operand2 == 0) {
2852: mandoc_msg(MANDOCERR_DIVZERO,
1.222 schwarze 2853: ln, *pos, "%s", v);
1.116 schwarze 2854: *res = 0;
2855: break;
2856: }
1.77 schwarze 2857: *res %= operand2;
2858: break;
1.80 schwarze 2859: case '<':
1.77 schwarze 2860: *res = *res < operand2;
2861: break;
1.80 schwarze 2862: case '>':
1.77 schwarze 2863: *res = *res > operand2;
2864: break;
1.80 schwarze 2865: case 'l':
1.77 schwarze 2866: *res = *res <= operand2;
2867: break;
1.80 schwarze 2868: case 'g':
1.77 schwarze 2869: *res = *res >= operand2;
2870: break;
1.80 schwarze 2871: case '=':
1.77 schwarze 2872: *res = *res == operand2;
2873: break;
1.80 schwarze 2874: case '!':
1.77 schwarze 2875: *res = *res != operand2;
2876: break;
1.80 schwarze 2877: case '&':
1.77 schwarze 2878: *res = *res && operand2;
2879: break;
1.80 schwarze 2880: case ':':
1.77 schwarze 2881: *res = *res || operand2;
2882: break;
1.80 schwarze 2883: case 'i':
1.77 schwarze 2884: if (operand2 < *res)
2885: *res = operand2;
2886: break;
1.80 schwarze 2887: case 'a':
1.77 schwarze 2888: if (operand2 > *res)
2889: *res = operand2;
2890: break;
2891: default:
2892: abort();
2893: }
2894: }
1.149 schwarze 2895: return 1;
1.77 schwarze 2896: }
2897:
1.138 schwarze 2898: /* --- register management ------------------------------------------------ */
2899:
1.52 schwarze 2900: void
1.60 schwarze 2901: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.41 schwarze 2902: {
1.199 schwarze 2903: roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
1.198 schwarze 2904: }
2905:
2906: static void
2907: roff_setregn(struct roff *r, const char *name, size_t len,
1.199 schwarze 2908: int val, char sign, int step)
1.198 schwarze 2909: {
1.52 schwarze 2910: struct roffreg *reg;
2911:
2912: /* Search for an existing register with the same name. */
2913: reg = r->regtab;
2914:
1.198 schwarze 2915: while (reg != NULL && (reg->key.sz != len ||
2916: strncmp(reg->key.p, name, len) != 0))
1.52 schwarze 2917: reg = reg->next;
1.41 schwarze 2918:
1.52 schwarze 2919: if (NULL == reg) {
2920: /* Create a new register. */
2921: reg = mandoc_malloc(sizeof(struct roffreg));
1.198 schwarze 2922: reg->key.p = mandoc_strndup(name, len);
2923: reg->key.sz = len;
1.60 schwarze 2924: reg->val = 0;
1.199 schwarze 2925: reg->step = 0;
1.52 schwarze 2926: reg->next = r->regtab;
2927: r->regtab = reg;
2928: }
2929:
1.60 schwarze 2930: if ('+' == sign)
2931: reg->val += val;
2932: else if ('-' == sign)
2933: reg->val -= val;
2934: else
2935: reg->val = val;
1.199 schwarze 2936: if (step != INT_MIN)
2937: reg->step = step;
1.41 schwarze 2938: }
2939:
1.65 schwarze 2940: /*
2941: * Handle some predefined read-only number registers.
2942: * For now, return -1 if the requested register is not predefined;
2943: * in case a predefined read-only register having the value -1
2944: * were to turn up, another special value would have to be chosen.
2945: */
2946: static int
1.145 schwarze 2947: roff_getregro(const struct roff *r, const char *name)
1.65 schwarze 2948: {
2949:
2950: switch (*name) {
1.145 schwarze 2951: case '$': /* Number of arguments of the last macro evaluated. */
1.211 schwarze 2952: return r->mstackpos < 0 ? 0 : r->mstack[r->mstackpos].argc;
1.80 schwarze 2953: case 'A': /* ASCII approximation mode is always off. */
1.149 schwarze 2954: return 0;
1.80 schwarze 2955: case 'g': /* Groff compatibility mode is always on. */
1.149 schwarze 2956: return 1;
1.80 schwarze 2957: case 'H': /* Fixed horizontal resolution. */
1.149 schwarze 2958: return 24;
1.80 schwarze 2959: case 'j': /* Always adjust left margin only. */
1.149 schwarze 2960: return 0;
1.80 schwarze 2961: case 'T': /* Some output device is always defined. */
1.149 schwarze 2962: return 1;
1.80 schwarze 2963: case 'V': /* Fixed vertical resolution. */
1.149 schwarze 2964: return 40;
1.65 schwarze 2965: default:
1.149 schwarze 2966: return -1;
1.65 schwarze 2967: }
2968: }
2969:
1.53 schwarze 2970: int
1.198 schwarze 2971: roff_getreg(struct roff *r, const char *name)
1.41 schwarze 2972: {
1.199 schwarze 2973: return roff_getregn(r, name, strlen(name), '\0');
1.53 schwarze 2974: }
2975:
2976: static int
1.199 schwarze 2977: roff_getregn(struct roff *r, const char *name, size_t len, char sign)
1.53 schwarze 2978: {
2979: struct roffreg *reg;
1.65 schwarze 2980: int val;
2981:
2982: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2983: val = roff_getregro(r, name + 1);
1.65 schwarze 2984: if (-1 != val)
1.149 schwarze 2985: return val;
1.65 schwarze 2986: }
1.53 schwarze 2987:
1.199 schwarze 2988: for (reg = r->regtab; reg; reg = reg->next) {
1.53 schwarze 2989: if (len == reg->key.sz &&
1.199 schwarze 2990: 0 == strncmp(name, reg->key.p, len)) {
2991: switch (sign) {
2992: case '+':
2993: reg->val += reg->step;
2994: break;
2995: case '-':
2996: reg->val -= reg->step;
2997: break;
2998: default:
2999: break;
3000: }
1.149 schwarze 3001: return reg->val;
1.199 schwarze 3002: }
3003: }
1.143 schwarze 3004:
1.199 schwarze 3005: roff_setregn(r, name, len, 0, '\0', INT_MIN);
1.149 schwarze 3006: return 0;
1.143 schwarze 3007: }
3008:
3009: static int
3010: roff_hasregn(const struct roff *r, const char *name, size_t len)
3011: {
3012: struct roffreg *reg;
3013: int val;
3014:
3015: if ('.' == name[0] && 2 == len) {
1.145 schwarze 3016: val = roff_getregro(r, name + 1);
1.143 schwarze 3017: if (-1 != val)
1.149 schwarze 3018: return 1;
1.143 schwarze 3019: }
3020:
3021: for (reg = r->regtab; reg; reg = reg->next)
3022: if (len == reg->key.sz &&
3023: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 3024: return 1;
1.41 schwarze 3025:
1.149 schwarze 3026: return 0;
1.41 schwarze 3027: }
3028:
1.52 schwarze 3029: static void
3030: roff_freereg(struct roffreg *reg)
1.41 schwarze 3031: {
1.52 schwarze 3032: struct roffreg *old_reg;
1.41 schwarze 3033:
1.52 schwarze 3034: while (NULL != reg) {
3035: free(reg->key.p);
3036: old_reg = reg;
3037: reg = reg->next;
3038: free(old_reg);
3039: }
1.41 schwarze 3040: }
1.7 schwarze 3041:
1.212 schwarze 3042: static int
1.6 schwarze 3043: roff_nr(ROFF_ARGS)
1.1 schwarze 3044: {
1.199 schwarze 3045: char *key, *val, *step;
1.85 schwarze 3046: size_t keysz;
1.199 schwarze 3047: int iv, is, len;
1.60 schwarze 3048: char sign;
1.6 schwarze 3049:
1.110 schwarze 3050: key = val = buf->buf + pos;
3051: if (*key == '\0')
1.149 schwarze 3052: return ROFF_IGN;
1.85 schwarze 3053:
3054: keysz = roff_getname(r, &val, ln, pos);
1.110 schwarze 3055: if (key[keysz] == '\\')
1.149 schwarze 3056: return ROFF_IGN;
1.6 schwarze 3057:
1.60 schwarze 3058: sign = *val;
1.110 schwarze 3059: if (sign == '+' || sign == '-')
1.60 schwarze 3060: val++;
3061:
1.199 schwarze 3062: len = 0;
3063: if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
3064: return ROFF_IGN;
3065:
3066: step = val + len;
3067: while (isspace((unsigned char)*step))
3068: step++;
3069: if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)
3070: is = INT_MIN;
1.1 schwarze 3071:
1.199 schwarze 3072: roff_setregn(r, key, keysz, iv, sign, is);
1.149 schwarze 3073: return ROFF_IGN;
1.76 schwarze 3074: }
3075:
1.212 schwarze 3076: static int
1.76 schwarze 3077: roff_rr(ROFF_ARGS)
3078: {
3079: struct roffreg *reg, **prev;
1.85 schwarze 3080: char *name, *cp;
3081: size_t namesz;
1.76 schwarze 3082:
1.110 schwarze 3083: name = cp = buf->buf + pos;
3084: if (*name == '\0')
1.149 schwarze 3085: return ROFF_IGN;
1.85 schwarze 3086: namesz = roff_getname(r, &cp, ln, pos);
3087: name[namesz] = '\0';
1.76 schwarze 3088:
3089: prev = &r->regtab;
3090: while (1) {
3091: reg = *prev;
1.110 schwarze 3092: if (reg == NULL || !strcmp(name, reg->key.p))
1.76 schwarze 3093: break;
3094: prev = ®->next;
3095: }
1.110 schwarze 3096: if (reg != NULL) {
1.76 schwarze 3097: *prev = reg->next;
3098: free(reg->key.p);
3099: free(reg);
3100: }
1.149 schwarze 3101: return ROFF_IGN;
1.29 schwarze 3102: }
3103:
1.138 schwarze 3104: /* --- handler functions for roff requests -------------------------------- */
3105:
1.212 schwarze 3106: static int
1.29 schwarze 3107: roff_rm(ROFF_ARGS)
3108: {
3109: const char *name;
3110: char *cp;
1.85 schwarze 3111: size_t namesz;
1.29 schwarze 3112:
1.110 schwarze 3113: cp = buf->buf + pos;
3114: while (*cp != '\0') {
1.85 schwarze 3115: name = cp;
1.110 schwarze 3116: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.85 schwarze 3117: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.183 schwarze 3118: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.110 schwarze 3119: if (name[namesz] == '\\')
1.85 schwarze 3120: break;
1.29 schwarze 3121: }
1.149 schwarze 3122: return ROFF_IGN;
1.51 schwarze 3123: }
3124:
1.212 schwarze 3125: static int
1.51 schwarze 3126: roff_it(ROFF_ARGS)
3127: {
3128: int iv;
3129:
3130: /* Parse the number of lines. */
1.133 schwarze 3131:
3132: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.222 schwarze 3133: mandoc_msg(MANDOCERR_IT_NONUM,
3134: ln, ppos, "%s", buf->buf + 1);
1.149 schwarze 3135: return ROFF_IGN;
1.51 schwarze 3136: }
3137:
1.134 schwarze 3138: while (isspace((unsigned char)buf->buf[pos]))
3139: pos++;
3140:
3141: /*
3142: * Arm the input line trap.
3143: * Special-casing "an-trap" is an ugly workaround to cope
3144: * with DocBook stupidly fiddling with man(7) internals.
3145: */
1.133 schwarze 3146:
1.51 schwarze 3147: roffit_lines = iv;
1.134 schwarze 3148: roffit_macro = mandoc_strdup(iv != 1 ||
3149: strcmp(buf->buf + pos, "an-trap") ?
3150: buf->buf + pos : "br");
1.149 schwarze 3151: return ROFF_IGN;
1.47 schwarze 3152: }
3153:
1.212 schwarze 3154: static int
1.47 schwarze 3155: roff_Dd(ROFF_ARGS)
3156: {
1.187 schwarze 3157: int mask;
3158: enum roff_tok t, te;
1.99 schwarze 3159:
1.187 schwarze 3160: switch (tok) {
3161: case ROFF_Dd:
3162: tok = MDOC_Dd;
3163: te = MDOC_MAX;
3164: if (r->format == 0)
3165: r->format = MPARSE_MDOC;
3166: mask = MPARSE_MDOC | MPARSE_QUICK;
3167: break;
3168: case ROFF_TH:
3169: tok = MAN_TH;
3170: te = MAN_MAX;
3171: if (r->format == 0)
3172: r->format = MPARSE_MAN;
3173: mask = MPARSE_QUICK;
3174: break;
3175: default:
3176: abort();
3177: }
3178: if ((r->options & mask) == 0)
3179: for (t = tok; t < te; t++)
3180: roff_setstr(r, roff_name[t], NULL, 0);
1.149 schwarze 3181: return ROFF_CONT;
1.14 schwarze 3182: }
3183:
1.212 schwarze 3184: static int
1.27 schwarze 3185: roff_TE(ROFF_ARGS)
3186: {
1.193 schwarze 3187: if (r->tbl == NULL) {
1.222 schwarze 3188: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "TE");
1.193 schwarze 3189: return ROFF_IGN;
3190: }
1.218 schwarze 3191: if (tbl_end(r->tbl, 0) == 0) {
1.193 schwarze 3192: r->tbl = NULL;
1.130 schwarze 3193: free(buf->buf);
3194: buf->buf = mandoc_strdup(".sp");
3195: buf->sz = 4;
1.201 schwarze 3196: *offs = 0;
1.149 schwarze 3197: return ROFF_REPARSE;
1.130 schwarze 3198: }
1.193 schwarze 3199: r->tbl = NULL;
1.149 schwarze 3200: return ROFF_IGN;
1.27 schwarze 3201: }
3202:
1.212 schwarze 3203: static int
1.27 schwarze 3204: roff_T_(ROFF_ARGS)
3205: {
3206:
3207: if (NULL == r->tbl)
1.222 schwarze 3208: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "T&");
1.27 schwarze 3209: else
1.168 schwarze 3210: tbl_restart(ln, ppos, r->tbl);
1.27 schwarze 3211:
1.149 schwarze 3212: return ROFF_IGN;
1.27 schwarze 3213: }
3214:
1.102 schwarze 3215: /*
3216: * Handle in-line equation delimiters.
3217: */
1.212 schwarze 3218: static int
1.110 schwarze 3219: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.41 schwarze 3220: {
1.105 schwarze 3221: char *cp1, *cp2;
3222: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.41 schwarze 3223:
1.102 schwarze 3224: /*
3225: * Outside equations, look for an opening delimiter.
3226: * If we are inside an equation, we already know it is
3227: * in-line, or this function wouldn't have been called;
3228: * so look for a closing delimiter.
3229: */
3230:
1.110 schwarze 3231: cp1 = buf->buf + pos;
1.102 schwarze 3232: cp2 = strchr(cp1, r->eqn == NULL ?
3233: r->last_eqn->odelim : r->last_eqn->cdelim);
3234: if (cp2 == NULL)
1.149 schwarze 3235: return ROFF_CONT;
1.102 schwarze 3236:
1.105 schwarze 3237: *cp2++ = '\0';
3238: bef_pr = bef_nl = aft_nl = aft_pr = "";
3239:
3240: /* Handle preceding text, protecting whitespace. */
3241:
1.110 schwarze 3242: if (*buf->buf != '\0') {
1.105 schwarze 3243: if (r->eqn == NULL)
3244: bef_pr = "\\&";
3245: bef_nl = "\n";
3246: }
3247:
3248: /*
3249: * Prepare replacing the delimiter with an equation macro
3250: * and drop leading white space from the equation.
3251: */
1.102 schwarze 3252:
1.105 schwarze 3253: if (r->eqn == NULL) {
3254: while (*cp2 == ' ')
3255: cp2++;
3256: mac = ".EQ";
3257: } else
3258: mac = ".EN";
3259:
3260: /* Handle following text, protecting whitespace. */
3261:
3262: if (*cp2 != '\0') {
3263: aft_nl = "\n";
3264: if (r->eqn != NULL)
3265: aft_pr = "\\&";
3266: }
3267:
3268: /* Do the actual replacement. */
3269:
1.110 schwarze 3270: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.105 schwarze 3271: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.110 schwarze 3272: free(buf->buf);
3273: buf->buf = cp1;
1.102 schwarze 3274:
3275: /* Toggle the in-line state of the eqn subsystem. */
3276:
3277: r->eqn_inline = r->eqn == NULL;
1.149 schwarze 3278: return ROFF_REPARSE;
1.41 schwarze 3279: }
3280:
1.212 schwarze 3281: static int
1.107 schwarze 3282: roff_EQ(ROFF_ARGS)
1.32 schwarze 3283: {
1.191 schwarze 3284: struct roff_node *n;
3285:
1.228 schwarze 3286: if (r->man->meta.macroset == MACROSET_MAN)
1.194 schwarze 3287: man_breakscope(r->man, ROFF_EQ);
1.191 schwarze 3288: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
3289: if (ln > r->man->last->line)
3290: n->flags |= NODE_LINE;
1.220 schwarze 3291: n->eqn = eqn_box_new();
1.191 schwarze 3292: roff_node_append(r->man, n);
3293: r->man->next = ROFF_NEXT_SIBLING;
1.32 schwarze 3294:
1.110 schwarze 3295: assert(r->eqn == NULL);
1.191 schwarze 3296: if (r->last_eqn == NULL)
1.223 schwarze 3297: r->last_eqn = eqn_alloc();
1.191 schwarze 3298: else
3299: eqn_reset(r->last_eqn);
3300: r->eqn = r->last_eqn;
3301: r->eqn->node = n;
1.41 schwarze 3302:
1.110 schwarze 3303: if (buf->buf[pos] != '\0')
1.222 schwarze 3304: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.110 schwarze 3305: ".EQ %s", buf->buf + pos);
1.41 schwarze 3306:
1.149 schwarze 3307: return ROFF_IGN;
1.32 schwarze 3308: }
3309:
1.212 schwarze 3310: static int
1.32 schwarze 3311: roff_EN(ROFF_ARGS)
3312: {
1.191 schwarze 3313: if (r->eqn != NULL) {
3314: eqn_parse(r->eqn);
3315: r->eqn = NULL;
3316: } else
1.222 schwarze 3317: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "EN");
1.191 schwarze 3318: if (buf->buf[pos] != '\0')
1.222 schwarze 3319: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.191 schwarze 3320: "EN %s", buf->buf + pos);
1.149 schwarze 3321: return ROFF_IGN;
1.32 schwarze 3322: }
3323:
1.212 schwarze 3324: static int
1.27 schwarze 3325: roff_TS(ROFF_ARGS)
3326: {
1.193 schwarze 3327: if (r->tbl != NULL) {
1.222 schwarze 3328: mandoc_msg(MANDOCERR_BLK_BROKEN, ln, ppos, "TS breaks TS");
1.218 schwarze 3329: tbl_end(r->tbl, 0);
1.27 schwarze 3330: }
1.223 schwarze 3331: r->tbl = tbl_alloc(ppos, ln, r->last_tbl);
1.218 schwarze 3332: if (r->last_tbl == NULL)
1.193 schwarze 3333: r->first_tbl = r->tbl;
3334: r->last_tbl = r->tbl;
1.169 schwarze 3335: return ROFF_IGN;
3336: }
3337:
1.212 schwarze 3338: static int
1.169 schwarze 3339: roff_onearg(ROFF_ARGS)
3340: {
3341: struct roff_node *n;
3342: char *cp;
1.177 schwarze 3343: int npos;
1.169 schwarze 3344:
1.174 schwarze 3345: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.192 schwarze 3346: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
3347: tok == ROFF_ti))
1.174 schwarze 3348: man_breakscope(r->man, tok);
3349:
1.181 schwarze 3350: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.177 schwarze 3351: r->man->last = roffce_node;
3352: r->man->next = ROFF_NEXT_SIBLING;
3353: }
3354:
1.169 schwarze 3355: roff_elem_alloc(r->man, ln, ppos, tok);
3356: n = r->man->last;
3357:
3358: cp = buf->buf + pos;
3359: if (*cp != '\0') {
3360: while (*cp != '\0' && *cp != ' ')
3361: cp++;
3362: while (*cp == ' ')
3363: *cp++ = '\0';
3364: if (*cp != '\0')
1.222 schwarze 3365: mandoc_msg(MANDOCERR_ARG_EXCESS,
3366: ln, (int)(cp - buf->buf),
1.169 schwarze 3367: "%s ... %s", roff_name[tok], cp);
3368: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.172 schwarze 3369: }
3370:
1.181 schwarze 3371: if (tok == ROFF_ce || tok == ROFF_rj) {
3372: if (r->man->last->type == ROFFT_ELEM) {
1.177 schwarze 3373: roff_word_alloc(r->man, ln, pos, "1");
3374: r->man->last->flags |= NODE_NOSRC;
3375: }
3376: npos = 0;
3377: if (roff_evalnum(r, ln, r->man->last->string, &npos,
3378: &roffce_lines, 0) == 0) {
1.222 schwarze 3379: mandoc_msg(MANDOCERR_CE_NONUM,
3380: ln, pos, "ce %s", buf->buf + pos);
1.177 schwarze 3381: roffce_lines = 1;
3382: }
3383: if (roffce_lines < 1) {
3384: r->man->last = r->man->last->parent;
3385: roffce_node = NULL;
3386: roffce_lines = 0;
3387: } else
3388: roffce_node = r->man->last->parent;
3389: } else {
3390: n->flags |= NODE_VALID | NODE_ENDED;
3391: r->man->last = n;
3392: }
3393: n->flags |= NODE_LINE;
1.172 schwarze 3394: r->man->next = ROFF_NEXT_SIBLING;
3395: return ROFF_IGN;
3396: }
3397:
1.212 schwarze 3398: static int
1.172 schwarze 3399: roff_manyarg(ROFF_ARGS)
3400: {
3401: struct roff_node *n;
3402: char *sp, *ep;
3403:
3404: roff_elem_alloc(r->man, ln, ppos, tok);
3405: n = r->man->last;
3406:
3407: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3408: while (*ep != '\0' && *ep != ' ')
3409: ep++;
3410: while (*ep == ' ')
3411: *ep++ = '\0';
3412: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.169 schwarze 3413: }
3414:
3415: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3416: r->man->last = n;
3417: r->man->next = ROFF_NEXT_SIBLING;
1.149 schwarze 3418: return ROFF_IGN;
1.123 schwarze 3419: }
3420:
1.212 schwarze 3421: static int
1.183 schwarze 3422: roff_als(ROFF_ARGS)
3423: {
3424: char *oldn, *newn, *end, *value;
3425: size_t oldsz, newsz, valsz;
3426:
3427: newn = oldn = buf->buf + pos;
3428: if (*newn == '\0')
3429: return ROFF_IGN;
3430:
3431: newsz = roff_getname(r, &oldn, ln, pos);
3432: if (newn[newsz] == '\\' || *oldn == '\0')
3433: return ROFF_IGN;
3434:
3435: end = oldn;
3436: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3437: if (oldsz == 0)
3438: return ROFF_IGN;
3439:
1.210 schwarze 3440: valsz = mandoc_asprintf(&value, ".%.*s \\$@\\\"\n",
1.187 schwarze 3441: (int)oldsz, oldn);
1.183 schwarze 3442: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3443: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3444: free(value);
3445: return ROFF_IGN;
3446: }
3447:
1.212 schwarze 3448: static int
1.168 schwarze 3449: roff_br(ROFF_ARGS)
1.123 schwarze 3450: {
1.174 schwarze 3451: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3452: man_breakscope(r->man, ROFF_br);
1.168 schwarze 3453: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
3454: if (buf->buf[pos] != '\0')
1.222 schwarze 3455: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.168 schwarze 3456: "%s %s", roff_name[tok], buf->buf + pos);
3457: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3458: r->man->next = ROFF_NEXT_SIBLING;
3459: return ROFF_IGN;
1.27 schwarze 3460: }
3461:
1.212 schwarze 3462: static int
1.48 schwarze 3463: roff_cc(ROFF_ARGS)
3464: {
3465: const char *p;
3466:
1.110 schwarze 3467: p = buf->buf + pos;
1.48 schwarze 3468:
1.110 schwarze 3469: if (*p == '\0' || (r->control = *p++) == '.')
1.175 schwarze 3470: r->control = '\0';
1.48 schwarze 3471:
1.110 schwarze 3472: if (*p != '\0')
1.222 schwarze 3473: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.132 schwarze 3474: ln, p - buf->buf, "cc ... %s", p);
1.48 schwarze 3475:
1.213 schwarze 3476: return ROFF_IGN;
3477: }
3478:
3479: static int
3480: roff_char(ROFF_ARGS)
3481: {
3482: const char *p, *kp, *vp;
3483: size_t ksz, vsz;
3484: int font;
3485:
3486: /* Parse the character to be replaced. */
3487:
3488: kp = buf->buf + pos;
3489: p = kp + 1;
3490: if (*kp == '\0' || (*kp == '\\' &&
3491: mandoc_escape(&p, NULL, NULL) != ESCAPE_SPECIAL) ||
3492: (*p != ' ' && *p != '\0')) {
1.222 schwarze 3493: mandoc_msg(MANDOCERR_CHAR_ARG, ln, pos, "char %s", kp);
1.213 schwarze 3494: return ROFF_IGN;
3495: }
3496: ksz = p - kp;
3497: while (*p == ' ')
3498: p++;
3499:
3500: /*
3501: * If the replacement string contains a font escape sequence,
3502: * we have to restore the font at the end.
3503: */
3504:
3505: vp = p;
3506: vsz = strlen(p);
3507: font = 0;
3508: while (*p != '\0') {
3509: if (*p++ != '\\')
3510: continue;
3511: switch (mandoc_escape(&p, NULL, NULL)) {
3512: case ESCAPE_FONT:
3513: case ESCAPE_FONTROMAN:
3514: case ESCAPE_FONTITALIC:
3515: case ESCAPE_FONTBOLD:
3516: case ESCAPE_FONTBI:
1.214 schwarze 3517: case ESCAPE_FONTCW:
1.213 schwarze 3518: case ESCAPE_FONTPREV:
3519: font++;
3520: break;
3521: default:
3522: break;
3523: }
3524: }
3525: if (font > 1)
1.222 schwarze 3526: mandoc_msg(MANDOCERR_CHAR_FONT,
3527: ln, (int)(vp - buf->buf), "%s", vp);
1.213 schwarze 3528:
3529: /*
3530: * Approximate the effect of .char using the .tr tables.
3531: * XXX In groff, .char and .tr interact differently.
3532: */
3533:
3534: if (ksz == 1) {
3535: if (r->xtab == NULL)
3536: r->xtab = mandoc_calloc(128, sizeof(*r->xtab));
3537: assert((unsigned int)*kp < 128);
3538: free(r->xtab[(int)*kp].p);
3539: r->xtab[(int)*kp].sz = mandoc_asprintf(&r->xtab[(int)*kp].p,
3540: "%s%s", vp, font ? "\fP" : "");
3541: } else {
3542: roff_setstrn(&r->xmbtab, kp, ksz, vp, vsz, 0);
3543: if (font)
3544: roff_setstrn(&r->xmbtab, kp, ksz, "\\fP", 3, 1);
3545: }
1.149 schwarze 3546: return ROFF_IGN;
1.48 schwarze 3547: }
3548:
1.212 schwarze 3549: static int
1.175 schwarze 3550: roff_ec(ROFF_ARGS)
3551: {
3552: const char *p;
3553:
3554: p = buf->buf + pos;
3555: if (*p == '\0')
3556: r->escape = '\\';
3557: else {
3558: r->escape = *p;
3559: if (*++p != '\0')
1.222 schwarze 3560: mandoc_msg(MANDOCERR_ARG_EXCESS, ln,
3561: (int)(p - buf->buf), "ec ... %s", p);
1.175 schwarze 3562: }
3563: return ROFF_IGN;
3564: }
3565:
1.212 schwarze 3566: static int
1.175 schwarze 3567: roff_eo(ROFF_ARGS)
3568: {
3569: r->escape = '\0';
3570: if (buf->buf[pos] != '\0')
1.222 schwarze 3571: mandoc_msg(MANDOCERR_ARG_SKIP,
1.175 schwarze 3572: ln, pos, "eo %s", buf->buf + pos);
3573: return ROFF_IGN;
1.202 schwarze 3574: }
3575:
1.212 schwarze 3576: static int
1.202 schwarze 3577: roff_nop(ROFF_ARGS)
3578: {
3579: while (buf->buf[pos] == ' ')
3580: pos++;
3581: *offs = pos;
3582: return ROFF_RERUN;
1.175 schwarze 3583: }
3584:
1.212 schwarze 3585: static int
1.42 schwarze 3586: roff_tr(ROFF_ARGS)
3587: {
3588: const char *p, *first, *second;
3589: size_t fsz, ssz;
3590: enum mandoc_esc esc;
3591:
1.110 schwarze 3592: p = buf->buf + pos;
1.42 schwarze 3593:
1.110 schwarze 3594: if (*p == '\0') {
1.222 schwarze 3595: mandoc_msg(MANDOCERR_REQ_EMPTY, ln, ppos, "tr");
1.149 schwarze 3596: return ROFF_IGN;
1.42 schwarze 3597: }
3598:
1.110 schwarze 3599: while (*p != '\0') {
1.42 schwarze 3600: fsz = ssz = 1;
3601:
3602: first = p++;
1.110 schwarze 3603: if (*first == '\\') {
1.42 schwarze 3604: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3605: if (esc == ESCAPE_ERROR) {
1.222 schwarze 3606: mandoc_msg(MANDOCERR_ESC_BAD, ln,
3607: (int)(p - buf->buf), "%s", first);
1.149 schwarze 3608: return ROFF_IGN;
1.42 schwarze 3609: }
3610: fsz = (size_t)(p - first);
3611: }
3612:
3613: second = p++;
1.110 schwarze 3614: if (*second == '\\') {
1.42 schwarze 3615: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3616: if (esc == ESCAPE_ERROR) {
1.222 schwarze 3617: mandoc_msg(MANDOCERR_ESC_BAD, ln,
3618: (int)(p - buf->buf), "%s", second);
1.149 schwarze 3619: return ROFF_IGN;
1.42 schwarze 3620: }
3621: ssz = (size_t)(p - second);
1.110 schwarze 3622: } else if (*second == '\0') {
1.222 schwarze 3623: mandoc_msg(MANDOCERR_TR_ODD, ln,
3624: (int)(first - buf->buf), "tr %s", first);
1.42 schwarze 3625: second = " ";
3626: p--;
3627: }
3628:
3629: if (fsz > 1) {
1.80 schwarze 3630: roff_setstrn(&r->xmbtab, first, fsz,
3631: second, ssz, 0);
1.42 schwarze 3632: continue;
3633: }
3634:
1.110 schwarze 3635: if (r->xtab == NULL)
1.80 schwarze 3636: r->xtab = mandoc_calloc(128,
3637: sizeof(struct roffstr));
1.42 schwarze 3638:
3639: free(r->xtab[(int)*first].p);
3640: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3641: r->xtab[(int)*first].sz = ssz;
3642: }
3643:
1.149 schwarze 3644: return ROFF_IGN;
1.42 schwarze 3645: }
3646:
1.211 schwarze 3647: /*
3648: * Implementation of the .return request.
3649: * There is no need to call roff_userret() from here.
3650: * The read module will call that after rewinding the reader stack
3651: * to the place from where the current macro was called.
3652: */
1.212 schwarze 3653: static int
1.211 schwarze 3654: roff_return(ROFF_ARGS)
3655: {
3656: if (r->mstackpos >= 0)
1.212 schwarze 3657: return ROFF_IGN | ROFF_USERRET;
1.211 schwarze 3658:
1.222 schwarze 3659: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "return");
1.211 schwarze 3660: return ROFF_IGN;
3661: }
3662:
1.212 schwarze 3663: static int
1.178 schwarze 3664: roff_rn(ROFF_ARGS)
3665: {
3666: const char *value;
3667: char *oldn, *newn, *end;
3668: size_t oldsz, newsz;
1.187 schwarze 3669: int deftype;
1.178 schwarze 3670:
3671: oldn = newn = buf->buf + pos;
3672: if (*oldn == '\0')
3673: return ROFF_IGN;
3674:
3675: oldsz = roff_getname(r, &newn, ln, pos);
3676: if (oldn[oldsz] == '\\' || *newn == '\0')
3677: return ROFF_IGN;
3678:
3679: end = newn;
3680: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3681: if (newsz == 0)
3682: return ROFF_IGN;
3683:
1.187 schwarze 3684: deftype = ROFFDEF_ANY;
3685: value = roff_getstrn(r, oldn, oldsz, &deftype);
3686: switch (deftype) {
3687: case ROFFDEF_USER:
1.178 schwarze 3688: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3689: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3690: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.187 schwarze 3691: break;
3692: case ROFFDEF_PRE:
3693: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3694: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3695: break;
3696: case ROFFDEF_REN:
1.178 schwarze 3697: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3698: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.187 schwarze 3699: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3700: break;
3701: case ROFFDEF_STD:
1.178 schwarze 3702: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.187 schwarze 3703: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3704: break;
3705: default:
3706: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3707: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3708: break;
3709: }
1.178 schwarze 3710: return ROFF_IGN;
3711: }
3712:
1.212 schwarze 3713: static int
1.211 schwarze 3714: roff_shift(ROFF_ARGS)
3715: {
3716: struct mctx *ctx;
3717: int levels, i;
3718:
3719: levels = 1;
3720: if (buf->buf[pos] != '\0' &&
3721: roff_evalnum(r, ln, buf->buf, &pos, &levels, 0) == 0) {
1.222 schwarze 3722: mandoc_msg(MANDOCERR_CE_NONUM,
1.211 schwarze 3723: ln, pos, "shift %s", buf->buf + pos);
3724: levels = 1;
3725: }
3726: if (r->mstackpos < 0) {
1.222 schwarze 3727: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "shift");
1.211 schwarze 3728: return ROFF_IGN;
3729: }
3730: ctx = r->mstack + r->mstackpos;
3731: if (levels > ctx->argc) {
1.222 schwarze 3732: mandoc_msg(MANDOCERR_SHIFT,
1.211 schwarze 3733: ln, pos, "%d, but max is %d", levels, ctx->argc);
3734: levels = ctx->argc;
3735: }
3736: if (levels == 0)
3737: return ROFF_IGN;
3738: for (i = 0; i < levels; i++)
3739: free(ctx->argv[i]);
3740: ctx->argc -= levels;
3741: for (i = 0; i < ctx->argc; i++)
3742: ctx->argv[i] = ctx->argv[i + levels];
3743: return ROFF_IGN;
3744: }
3745:
1.212 schwarze 3746: static int
1.14 schwarze 3747: roff_so(ROFF_ARGS)
3748: {
1.121 schwarze 3749: char *name, *cp;
1.15 schwarze 3750:
1.110 schwarze 3751: name = buf->buf + pos;
1.222 schwarze 3752: mandoc_msg(MANDOCERR_SO, ln, ppos, "so %s", name);
1.14 schwarze 3753:
1.22 schwarze 3754: /*
3755: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3756: * opening anything that's not in our cwd or anything beneath
3757: * it. Thus, explicitly disallow traversing up the file-system
3758: * or using absolute paths.
3759: */
3760:
1.110 schwarze 3761: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.222 schwarze 3762: mandoc_msg(MANDOCERR_SO_PATH, ln, ppos, ".so %s", name);
1.121 schwarze 3763: buf->sz = mandoc_asprintf(&cp,
3764: ".sp\nSee the file %s.\n.sp", name) + 1;
3765: free(buf->buf);
3766: buf->buf = cp;
3767: *offs = 0;
1.149 schwarze 3768: return ROFF_REPARSE;
1.14 schwarze 3769: }
3770:
3771: *offs = pos;
1.149 schwarze 3772: return ROFF_SO;
1.7 schwarze 3773: }
3774:
1.138 schwarze 3775: /* --- user defined strings and macros ------------------------------------ */
3776:
1.212 schwarze 3777: static int
1.16 schwarze 3778: roff_userdef(ROFF_ARGS)
1.12 schwarze 3779: {
1.211 schwarze 3780: struct mctx *ctx;
3781: char *arg, *ap, *dst, *src;
3782: size_t sz;
3783:
3784: /* Initialize a new macro stack context. */
3785:
3786: if (++r->mstackpos == r->mstacksz) {
3787: r->mstack = mandoc_recallocarray(r->mstack,
3788: r->mstacksz, r->mstacksz + 8, sizeof(*r->mstack));
3789: r->mstacksz += 8;
3790: }
3791: ctx = r->mstack + r->mstackpos;
3792: ctx->argsz = 0;
3793: ctx->argc = 0;
3794: ctx->argv = NULL;
3795:
3796: /*
3797: * Collect pointers to macro argument strings,
3798: * NUL-terminating them and escaping quotes.
3799: */
3800:
3801: src = buf->buf + pos;
3802: while (*src != '\0') {
3803: if (ctx->argc == ctx->argsz) {
3804: ctx->argsz += 8;
3805: ctx->argv = mandoc_reallocarray(ctx->argv,
3806: ctx->argsz, sizeof(*ctx->argv));
3807: }
1.227 schwarze 3808: arg = roff_getarg(r, &src, ln, &pos);
1.211 schwarze 3809: sz = 1; /* For the terminating NUL. */
3810: for (ap = arg; *ap != '\0'; ap++)
3811: sz += *ap == '"' ? 4 : 1;
3812: ctx->argv[ctx->argc++] = dst = mandoc_malloc(sz);
3813: for (ap = arg; *ap != '\0'; ap++) {
3814: if (*ap == '"') {
3815: memcpy(dst, "\\(dq", 4);
3816: dst += 4;
3817: } else
3818: *dst++ = *ap;
1.16 schwarze 3819: }
1.211 schwarze 3820: *dst = '\0';
1.227 schwarze 3821: free(arg);
1.209 schwarze 3822: }
3823:
1.211 schwarze 3824: /* Replace the macro invocation by the macro definition. */
1.135 schwarze 3825:
1.110 schwarze 3826: free(buf->buf);
1.211 schwarze 3827: buf->buf = mandoc_strdup(r->current_string);
3828: buf->sz = strlen(buf->buf) + 1;
1.120 schwarze 3829: *offs = 0;
1.16 schwarze 3830:
1.149 schwarze 3831: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
1.212 schwarze 3832: ROFF_REPARSE | ROFF_USERCALL : ROFF_IGN | ROFF_APPEND;
1.12 schwarze 3833: }
1.28 schwarze 3834:
1.178 schwarze 3835: /*
3836: * Calling a high-level macro that was renamed with .rn.
3837: * r->current_string has already been set up by roff_parse().
3838: */
1.212 schwarze 3839: static int
1.178 schwarze 3840: roff_renamed(ROFF_ARGS)
3841: {
3842: char *nbuf;
3843:
1.187 schwarze 3844: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
3845: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.178 schwarze 3846: free(buf->buf);
3847: buf->buf = nbuf;
1.201 schwarze 3848: *offs = 0;
1.178 schwarze 3849: return ROFF_CONT;
3850: }
3851:
1.85 schwarze 3852: static size_t
1.28 schwarze 3853: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3854: {
3855: char *name, *cp;
1.85 schwarze 3856: size_t namesz;
1.28 schwarze 3857:
3858: name = *cpp;
3859: if ('\0' == *name)
1.149 schwarze 3860: return 0;
1.28 schwarze 3861:
1.85 schwarze 3862: /* Read until end of name and terminate it with NUL. */
3863: for (cp = name; 1; cp++) {
3864: if ('\0' == *cp || ' ' == *cp) {
3865: namesz = cp - name;
3866: break;
3867: }
1.28 schwarze 3868: if ('\\' != *cp)
3869: continue;
1.88 schwarze 3870: namesz = cp - name;
3871: if ('{' == cp[1] || '}' == cp[1])
3872: break;
1.28 schwarze 3873: cp++;
3874: if ('\\' == *cp)
3875: continue;
1.222 schwarze 3876: mandoc_msg(MANDOCERR_NAMESC, ln, pos,
1.97 schwarze 3877: "%.*s", (int)(cp - name + 1), name);
1.85 schwarze 3878: mandoc_escape((const char **)&cp, NULL, NULL);
3879: break;
1.28 schwarze 3880: }
3881:
3882: /* Read past spaces. */
3883: while (' ' == *cp)
3884: cp++;
3885:
3886: *cpp = cp;
1.149 schwarze 3887: return namesz;
1.28 schwarze 3888: }
3889:
1.16 schwarze 3890: /*
3891: * Store *string into the user-defined string called *name.
3892: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.66 schwarze 3893: * append == 0: replace mode
3894: * append == 1: single-line append mode
3895: * append == 2: multiline append mode, append '\n' after each call
1.16 schwarze 3896: */
1.8 schwarze 3897: static void
1.16 schwarze 3898: roff_setstr(struct roff *r, const char *name, const char *string,
1.66 schwarze 3899: int append)
1.7 schwarze 3900: {
1.187 schwarze 3901: size_t namesz;
1.42 schwarze 3902:
1.187 schwarze 3903: namesz = strlen(name);
3904: roff_setstrn(&r->strtab, name, namesz, string,
1.80 schwarze 3905: string ? strlen(string) : 0, append);
1.187 schwarze 3906: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.42 schwarze 3907: }
3908:
3909: static void
3910: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.66 schwarze 3911: const char *string, size_t stringsz, int append)
1.42 schwarze 3912: {
3913: struct roffkv *n;
3914: char *c;
3915: int i;
3916: size_t oldch, newch;
1.7 schwarze 3917:
1.16 schwarze 3918: /* Search for an existing string with the same name. */
1.42 schwarze 3919: n = *r;
3920:
1.84 schwarze 3921: while (n && (namesz != n->key.sz ||
3922: strncmp(n->key.p, name, namesz)))
1.7 schwarze 3923: n = n->next;
1.8 schwarze 3924:
3925: if (NULL == n) {
1.16 schwarze 3926: /* Create a new string table entry. */
1.42 schwarze 3927: n = mandoc_malloc(sizeof(struct roffkv));
3928: n->key.p = mandoc_strndup(name, namesz);
3929: n->key.sz = namesz;
3930: n->val.p = NULL;
3931: n->val.sz = 0;
3932: n->next = *r;
3933: *r = n;
1.66 schwarze 3934: } else if (0 == append) {
1.42 schwarze 3935: free(n->val.p);
3936: n->val.p = NULL;
3937: n->val.sz = 0;
1.16 schwarze 3938: }
3939:
3940: if (NULL == string)
3941: return;
3942:
3943: /*
3944: * One additional byte for the '\n' in multiline mode,
3945: * and one for the terminating '\0'.
3946: */
1.66 schwarze 3947: newch = stringsz + (1 < append ? 2u : 1u);
1.42 schwarze 3948:
3949: if (NULL == n->val.p) {
3950: n->val.p = mandoc_malloc(newch);
3951: *n->val.p = '\0';
1.16 schwarze 3952: oldch = 0;
3953: } else {
1.42 schwarze 3954: oldch = n->val.sz;
3955: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.16 schwarze 3956: }
3957:
3958: /* Skip existing content in the destination buffer. */
1.42 schwarze 3959: c = n->val.p + (int)oldch;
1.16 schwarze 3960:
3961: /* Append new content to the destination buffer. */
1.42 schwarze 3962: i = 0;
3963: while (i < (int)stringsz) {
1.16 schwarze 3964: /*
3965: * Rudimentary roff copy mode:
3966: * Handle escaped backslashes.
3967: */
1.42 schwarze 3968: if ('\\' == string[i] && '\\' == string[i + 1])
3969: i++;
3970: *c++ = string[i++];
1.16 schwarze 3971: }
1.8 schwarze 3972:
1.16 schwarze 3973: /* Append terminating bytes. */
1.66 schwarze 3974: if (1 < append)
1.16 schwarze 3975: *c++ = '\n';
1.42 schwarze 3976:
1.16 schwarze 3977: *c = '\0';
1.42 schwarze 3978: n->val.sz = (int)(c - n->val.p);
1.7 schwarze 3979: }
3980:
1.8 schwarze 3981: static const char *
1.197 schwarze 3982: roff_getstrn(struct roff *r, const char *name, size_t len,
1.187 schwarze 3983: int *deftype)
1.7 schwarze 3984: {
1.187 schwarze 3985: const struct roffkv *n;
1.197 schwarze 3986: int found, i;
1.187 schwarze 3987: enum roff_tok tok;
3988:
1.197 schwarze 3989: found = 0;
3990: for (n = r->strtab; n != NULL; n = n->next) {
3991: if (strncmp(name, n->key.p, len) != 0 ||
3992: n->key.p[len] != '\0' || n->val.p == NULL)
3993: continue;
3994: if (*deftype & ROFFDEF_USER) {
3995: *deftype = ROFFDEF_USER;
3996: return n->val.p;
3997: } else {
3998: found = 1;
3999: break;
4000: }
4001: }
4002: for (n = r->rentab; n != NULL; n = n->next) {
4003: if (strncmp(name, n->key.p, len) != 0 ||
4004: n->key.p[len] != '\0' || n->val.p == NULL)
4005: continue;
4006: if (*deftype & ROFFDEF_REN) {
4007: *deftype = ROFFDEF_REN;
4008: return n->val.p;
4009: } else {
4010: found = 1;
4011: break;
1.187 schwarze 4012: }
4013: }
1.197 schwarze 4014: for (i = 0; i < PREDEFS_MAX; i++) {
4015: if (strncmp(name, predefs[i].name, len) != 0 ||
4016: predefs[i].name[len] != '\0')
4017: continue;
4018: if (*deftype & ROFFDEF_PRE) {
4019: *deftype = ROFFDEF_PRE;
4020: return predefs[i].str;
4021: } else {
4022: found = 1;
4023: break;
1.187 schwarze 4024: }
4025: }
1.228 schwarze 4026: if (r->man->meta.macroset != MACROSET_MAN) {
1.197 schwarze 4027: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
4028: if (strncmp(name, roff_name[tok], len) != 0 ||
4029: roff_name[tok][len] != '\0')
4030: continue;
4031: if (*deftype & ROFFDEF_STD) {
4032: *deftype = ROFFDEF_STD;
4033: return NULL;
4034: } else {
4035: found = 1;
4036: break;
1.187 schwarze 4037: }
4038: }
4039: }
1.228 schwarze 4040: if (r->man->meta.macroset != MACROSET_MDOC) {
1.197 schwarze 4041: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
4042: if (strncmp(name, roff_name[tok], len) != 0 ||
4043: roff_name[tok][len] != '\0')
4044: continue;
4045: if (*deftype & ROFFDEF_STD) {
4046: *deftype = ROFFDEF_STD;
4047: return NULL;
4048: } else {
4049: found = 1;
4050: break;
1.187 schwarze 4051: }
4052: }
1.197 schwarze 4053: }
4054:
4055: if (found == 0 && *deftype != ROFFDEF_ANY) {
4056: if (*deftype & ROFFDEF_REN) {
4057: /*
4058: * This might still be a request,
4059: * so do not treat it as undefined yet.
4060: */
4061: *deftype = ROFFDEF_UNDEF;
4062: return NULL;
1.187 schwarze 4063: }
1.197 schwarze 4064:
4065: /* Using an undefined string defines it to be empty. */
4066:
4067: roff_setstrn(&r->strtab, name, len, "", 0, 0);
4068: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.187 schwarze 4069: }
1.197 schwarze 4070:
1.187 schwarze 4071: *deftype = 0;
1.149 schwarze 4072: return NULL;
1.7 schwarze 4073: }
4074:
1.8 schwarze 4075: static void
1.42 schwarze 4076: roff_freestr(struct roffkv *r)
1.7 schwarze 4077: {
1.42 schwarze 4078: struct roffkv *n, *nn;
1.7 schwarze 4079:
1.42 schwarze 4080: for (n = r; n; n = nn) {
4081: free(n->key.p);
4082: free(n->val.p);
1.7 schwarze 4083: nn = n->next;
4084: free(n);
4085: }
1.27 schwarze 4086: }
1.138 schwarze 4087:
4088: /* --- accessors and utility functions ------------------------------------ */
1.42 schwarze 4089:
4090: /*
4091: * Duplicate an input string, making the appropriate character
4092: * conversations (as stipulated by `tr') along the way.
4093: * Returns a heap-allocated string with all the replacements made.
4094: */
4095: char *
4096: roff_strdup(const struct roff *r, const char *p)
4097: {
4098: const struct roffkv *cp;
4099: char *res;
4100: const char *pp;
4101: size_t ssz, sz;
4102: enum mandoc_esc esc;
4103:
4104: if (NULL == r->xmbtab && NULL == r->xtab)
1.149 schwarze 4105: return mandoc_strdup(p);
1.42 schwarze 4106: else if ('\0' == *p)
1.149 schwarze 4107: return mandoc_strdup("");
1.42 schwarze 4108:
4109: /*
4110: * Step through each character looking for term matches
4111: * (remember that a `tr' can be invoked with an escape, which is
4112: * a glyph but the escape is multi-character).
4113: * We only do this if the character hash has been initialised
4114: * and the string is >0 length.
4115: */
4116:
4117: res = NULL;
4118: ssz = 0;
4119:
4120: while ('\0' != *p) {
1.161 schwarze 4121: assert((unsigned int)*p < 128);
4122: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.42 schwarze 4123: sz = r->xtab[(int)*p].sz;
4124: res = mandoc_realloc(res, ssz + sz + 1);
4125: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
4126: ssz += sz;
4127: p++;
4128: continue;
4129: } else if ('\\' != *p) {
4130: res = mandoc_realloc(res, ssz + 2);
4131: res[ssz++] = *p++;
4132: continue;
4133: }
4134:
4135: /* Search for term matches. */
4136: for (cp = r->xmbtab; cp; cp = cp->next)
4137: if (0 == strncmp(p, cp->key.p, cp->key.sz))
4138: break;
4139:
4140: if (NULL != cp) {
4141: /*
4142: * A match has been found.
4143: * Append the match to the array and move
4144: * forward by its keysize.
4145: */
1.80 schwarze 4146: res = mandoc_realloc(res,
4147: ssz + cp->val.sz + 1);
1.42 schwarze 4148: memcpy(res + ssz, cp->val.p, cp->val.sz);
4149: ssz += cp->val.sz;
4150: p += (int)cp->key.sz;
4151: continue;
4152: }
4153:
4154: /*
4155: * Handle escapes carefully: we need to copy
4156: * over just the escape itself, or else we might
4157: * do replacements within the escape itself.
4158: * Make sure to pass along the bogus string.
4159: */
4160: pp = p++;
4161: esc = mandoc_escape(&p, NULL, NULL);
4162: if (ESCAPE_ERROR == esc) {
4163: sz = strlen(pp);
4164: res = mandoc_realloc(res, ssz + sz + 1);
4165: memcpy(res + ssz, pp, sz);
4166: break;
4167: }
1.80 schwarze 4168: /*
4169: * We bail out on bad escapes.
1.42 schwarze 4170: * No need to warn: we already did so when
1.227 schwarze 4171: * roff_expand() was called.
1.42 schwarze 4172: */
4173: sz = (int)(p - pp);
4174: res = mandoc_realloc(res, ssz + sz + 1);
4175: memcpy(res + ssz, pp, sz);
4176: ssz += sz;
4177: }
4178:
4179: res[(int)ssz] = '\0';
1.149 schwarze 4180: return res;
1.99 schwarze 4181: }
4182:
4183: int
4184: roff_getformat(const struct roff *r)
4185: {
4186:
1.149 schwarze 4187: return r->format;
1.48 schwarze 4188: }
4189:
4190: /*
1.80 schwarze 4191: * Find out whether a line is a macro line or not.
1.48 schwarze 4192: * If it is, adjust the current position and return one; if it isn't,
4193: * return zero and don't change the current position.
4194: * If the control character has been set with `.cc', then let that grain
4195: * precedence.
4196: * This is slighly contrary to groff, where using the non-breaking
4197: * control character when `cc' has been invoked will cause the
4198: * non-breaking macro contents to be printed verbatim.
4199: */
4200: int
4201: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
4202: {
4203: int pos;
4204:
4205: pos = *ppos;
4206:
1.175 schwarze 4207: if (r->control != '\0' && cp[pos] == r->control)
1.48 schwarze 4208: pos++;
1.175 schwarze 4209: else if (r->control != '\0')
1.149 schwarze 4210: return 0;
1.48 schwarze 4211: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
4212: pos += 2;
4213: else if ('.' == cp[pos] || '\'' == cp[pos])
4214: pos++;
4215: else
1.149 schwarze 4216: return 0;
1.48 schwarze 4217:
4218: while (' ' == cp[pos] || '\t' == cp[pos])
4219: pos++;
4220:
4221: *ppos = pos;
1.149 schwarze 4222: return 1;
1.1 schwarze 4223: }
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