Annotation of src/usr.bin/mandoc/roff.c, Revision 1.193
1.193 ! schwarze 1: /* $OpenBSD: roff.c,v 1.192 2017/07/08 15:28:05 schwarze Exp $ */
1.1 schwarze 2: /*
1.139 schwarze 3: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.159 schwarze 4: * Copyright (c) 2010-2015, 2017 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:
29: #include "mandoc.h"
1.74 schwarze 30: #include "mandoc_aux.h"
1.167 schwarze 31: #include "mandoc_ohash.h"
1.137 schwarze 32: #include "roff.h"
1.98 daniel 33: #include "libmandoc.h"
1.138 schwarze 34: #include "roff_int.h"
1.27 schwarze 35: #include "libroff.h"
1.2 schwarze 36:
1.43 schwarze 37: /* Maximum number of string expansions per line, to break infinite loops. */
38: #define EXPAND_LIMIT 1000
39:
1.187 schwarze 40: /* Types of definitions of macros and strings. */
41: #define ROFFDEF_USER (1 << 1) /* User-defined. */
42: #define ROFFDEF_PRE (1 << 2) /* Predefined. */
43: #define ROFFDEF_REN (1 << 3) /* Renamed standard macro. */
44: #define ROFFDEF_STD (1 << 4) /* mdoc(7) or man(7) macro. */
45: #define ROFFDEF_ANY (ROFFDEF_USER | ROFFDEF_PRE | \
46: ROFFDEF_REN | ROFFDEF_STD)
47:
1.138 schwarze 48: /* --- data types --------------------------------------------------------- */
49:
1.41 schwarze 50: /*
1.42 schwarze 51: * An incredibly-simple string buffer.
52: */
1.8 schwarze 53: struct roffstr {
1.42 schwarze 54: char *p; /* nil-terminated buffer */
55: size_t sz; /* saved strlen(p) */
56: };
57:
58: /*
59: * A key-value roffstr pair as part of a singly-linked list.
60: */
61: struct roffkv {
62: struct roffstr key;
63: struct roffstr val;
64: struct roffkv *next; /* next in list */
1.8 schwarze 65: };
66:
1.52 schwarze 67: /*
68: * A single number register as part of a singly-linked list.
69: */
70: struct roffreg {
71: struct roffstr key;
1.53 schwarze 72: int val;
1.52 schwarze 73: struct roffreg *next;
74: };
75:
1.167 schwarze 76: /*
77: * Association of request and macro names with token IDs.
78: */
79: struct roffreq {
80: enum roff_tok tok;
81: char name[];
82: };
83:
1.1 schwarze 84: struct roff {
1.35 schwarze 85: struct mparse *parse; /* parse point */
1.168 schwarze 86: struct roff_man *man; /* mdoc or man parser */
1.1 schwarze 87: struct roffnode *last; /* leaf of stack */
1.96 schwarze 88: int *rstack; /* stack of inverted `ie' values */
1.167 schwarze 89: struct ohash *reqtab; /* request lookup table */
1.52 schwarze 90: struct roffreg *regtab; /* number registers */
1.42 schwarze 91: struct roffkv *strtab; /* user-defined strings & macros */
1.178 schwarze 92: struct roffkv *rentab; /* renamed strings & macros */
1.42 schwarze 93: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
94: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.16 schwarze 95: const char *current_string; /* value of last called user macro */
1.27 schwarze 96: struct tbl_node *first_tbl; /* first table parsed */
97: struct tbl_node *last_tbl; /* last table parsed */
98: struct tbl_node *tbl; /* current table being parsed */
1.191 schwarze 99: struct eqn_node *last_eqn; /* equation parser */
100: struct eqn_node *eqn; /* active equation parser */
1.102 schwarze 101: int eqn_inline; /* current equation is inline */
1.96 schwarze 102: int options; /* parse options */
103: int rstacksz; /* current size limit of rstack */
104: int rstackpos; /* position in rstack */
1.99 schwarze 105: int format; /* current file in mdoc or man format */
1.145 schwarze 106: int argc; /* number of args of the last macro */
1.96 schwarze 107: char control; /* control character */
1.175 schwarze 108: char escape; /* escape character */
1.1 schwarze 109: };
110:
111: struct roffnode {
1.166 schwarze 112: enum roff_tok tok; /* type of node */
1.1 schwarze 113: struct roffnode *parent; /* up one in stack */
114: int line; /* parse line */
115: int col; /* parse col */
1.16 schwarze 116: char *name; /* node name, e.g. macro name */
1.2 schwarze 117: char *end; /* end-rules: custom token */
118: int endspan; /* end-rules: next-line or infty */
1.71 schwarze 119: int rule; /* current evaluation rule */
1.1 schwarze 120: };
121:
122: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.166 schwarze 123: enum roff_tok tok, /* tok of macro */ \
1.110 schwarze 124: struct buf *buf, /* input buffer */ \
1.1 schwarze 125: int ln, /* parse line */ \
1.2 schwarze 126: int ppos, /* original pos in buffer */ \
127: int pos, /* current pos in buffer */ \
128: int *offs /* reset offset of buffer data */
1.1 schwarze 129:
130: typedef enum rofferr (*roffproc)(ROFF_ARGS);
131:
132: struct roffmac {
1.2 schwarze 133: roffproc proc; /* process new macro */
134: roffproc text; /* process as child text of macro */
135: roffproc sub; /* process as child of macro */
136: int flags;
137: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.1 schwarze 138: };
139:
1.37 schwarze 140: struct predef {
141: const char *name; /* predefined input name */
142: const char *str; /* replacement symbol */
143: };
144:
145: #define PREDEF(__name, __str) \
146: { (__name), (__str) },
147:
1.138 schwarze 148: /* --- function prototypes ------------------------------------------------ */
149:
1.42 schwarze 150: static void roffnode_cleanscope(struct roff *);
151: static void roffnode_pop(struct roff *);
1.166 schwarze 152: static void roffnode_push(struct roff *, enum roff_tok,
1.42 schwarze 153: const char *, int, int);
1.193 ! schwarze 154: static void roff_addtbl(struct roff_man *, struct tbl_node *);
1.183 schwarze 155: static enum rofferr roff_als(ROFF_ARGS);
1.2 schwarze 156: static enum rofferr roff_block(ROFF_ARGS);
157: static enum rofferr roff_block_text(ROFF_ARGS);
158: static enum rofferr roff_block_sub(ROFF_ARGS);
1.168 schwarze 159: static enum rofferr roff_br(ROFF_ARGS);
1.2 schwarze 160: static enum rofferr roff_cblock(ROFF_ARGS);
1.48 schwarze 161: static enum rofferr roff_cc(ROFF_ARGS);
1.68 schwarze 162: static void roff_ccond(struct roff *, int, int);
1.2 schwarze 163: static enum rofferr roff_cond(ROFF_ARGS);
164: static enum rofferr roff_cond_text(ROFF_ARGS);
165: static enum rofferr roff_cond_sub(ROFF_ARGS);
1.7 schwarze 166: static enum rofferr roff_ds(ROFF_ARGS);
1.175 schwarze 167: static enum rofferr roff_ec(ROFF_ARGS);
168: static enum rofferr roff_eo(ROFF_ARGS);
1.110 schwarze 169: static enum rofferr roff_eqndelim(struct roff *, struct buf *, int);
1.143 schwarze 170: static int roff_evalcond(struct roff *r, int, char *, int *);
1.106 schwarze 171: static int roff_evalnum(struct roff *, int,
172: const char *, int *, int *, int);
173: static int roff_evalpar(struct roff *, int,
1.133 schwarze 174: const char *, int *, int *, int);
1.71 schwarze 175: static int roff_evalstrcond(const char *, int *);
1.42 schwarze 176: static void roff_free1(struct roff *);
1.52 schwarze 177: static void roff_freereg(struct roffreg *);
1.42 schwarze 178: static void roff_freestr(struct roffkv *);
1.85 schwarze 179: static size_t roff_getname(struct roff *, char **, int, int);
1.133 schwarze 180: static int roff_getnum(const char *, int *, int *, int);
1.56 schwarze 181: static int roff_getop(const char *, int *, char *);
1.53 schwarze 182: static int roff_getregn(const struct roff *,
183: const char *, size_t);
1.145 schwarze 184: static int roff_getregro(const struct roff *,
185: const char *name);
1.80 schwarze 186: static const char *roff_getstrn(const struct roff *,
1.187 schwarze 187: const char *, size_t, int *);
1.143 schwarze 188: static int roff_hasregn(const struct roff *,
189: const char *, size_t);
1.123 schwarze 190: static enum rofferr roff_insec(ROFF_ARGS);
1.51 schwarze 191: static enum rofferr roff_it(ROFF_ARGS);
1.21 schwarze 192: static enum rofferr roff_line_ignore(ROFF_ARGS);
1.137 schwarze 193: static void roff_man_alloc1(struct roff_man *);
194: static void roff_man_free1(struct roff_man *);
1.172 schwarze 195: static enum rofferr roff_manyarg(ROFF_ARGS);
1.6 schwarze 196: static enum rofferr roff_nr(ROFF_ARGS);
1.169 schwarze 197: static enum rofferr roff_onearg(ROFF_ARGS);
1.166 schwarze 198: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.87 schwarze 199: int, int);
1.177 schwarze 200: static enum rofferr roff_parsetext(struct roff *, struct buf *,
201: int, int *);
1.178 schwarze 202: static enum rofferr roff_renamed(ROFF_ARGS);
1.110 schwarze 203: static enum rofferr roff_res(struct roff *, struct buf *, int, int);
1.29 schwarze 204: static enum rofferr roff_rm(ROFF_ARGS);
1.178 schwarze 205: static enum rofferr roff_rn(ROFF_ARGS);
1.76 schwarze 206: static enum rofferr roff_rr(ROFF_ARGS);
1.8 schwarze 207: static void roff_setstr(struct roff *,
1.16 schwarze 208: const char *, const char *, int);
1.80 schwarze 209: static void roff_setstrn(struct roffkv **, const char *,
1.42 schwarze 210: size_t, const char *, size_t, int);
1.14 schwarze 211: static enum rofferr roff_so(ROFF_ARGS);
1.42 schwarze 212: static enum rofferr roff_tr(ROFF_ARGS);
1.47 schwarze 213: static enum rofferr roff_Dd(ROFF_ARGS);
1.27 schwarze 214: static enum rofferr roff_TE(ROFF_ARGS);
215: static enum rofferr roff_TS(ROFF_ARGS);
1.32 schwarze 216: static enum rofferr roff_EQ(ROFF_ARGS);
217: static enum rofferr roff_EN(ROFF_ARGS);
1.27 schwarze 218: static enum rofferr roff_T_(ROFF_ARGS);
1.123 schwarze 219: static enum rofferr roff_unsupp(ROFF_ARGS);
1.16 schwarze 220: static enum rofferr roff_userdef(ROFF_ARGS);
1.1 schwarze 221:
1.138 schwarze 222: /* --- constant data ------------------------------------------------------ */
223:
1.133 schwarze 224: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
225: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
226:
1.166 schwarze 227: const char *__roff_name[MAN_MAX + 1] = {
1.177 schwarze 228: "br", "ce", "ft", "ll",
1.184 schwarze 229: "mc", "po", "rj", "sp",
230: "ta", "ti", NULL,
1.166 schwarze 231: "ab", "ad", "af", "aln",
232: "als", "am", "am1", "ami",
233: "ami1", "as", "as1", "asciify",
234: "backtrace", "bd", "bleedat", "blm",
235: "box", "boxa", "bp", "BP",
236: "break", "breakchar", "brnl", "brp",
1.177 schwarze 237: "brpnl", "c2", "cc",
1.166 schwarze 238: "cf", "cflags", "ch", "char",
239: "chop", "class", "close", "CL",
240: "color", "composite", "continue", "cp",
241: "cropat", "cs", "cu", "da",
242: "dch", "Dd", "de", "de1",
243: "defcolor", "dei", "dei1", "device",
244: "devicem", "di", "do", "ds",
245: "ds1", "dwh", "dt", "ec",
246: "ecr", "ecs", "el", "em",
247: "EN", "eo", "EP", "EQ",
248: "errprint", "ev", "evc", "ex",
249: "fallback", "fam", "fc", "fchar",
250: "fcolor", "fdeferlig", "feature", "fkern",
251: "fl", "flig", "fp", "fps",
252: "fschar", "fspacewidth", "fspecial", "ftr",
253: "fzoom", "gcolor", "hc", "hcode",
254: "hidechar", "hla", "hlm", "hpf",
255: "hpfa", "hpfcode", "hw", "hy",
256: "hylang", "hylen", "hym", "hypp",
257: "hys", "ie", "if", "ig",
258: "index", "it", "itc", "IX",
259: "kern", "kernafter", "kernbefore", "kernpair",
260: "lc", "lc_ctype", "lds", "length",
261: "letadj", "lf", "lg", "lhang",
262: "linetabs", "lnr", "lnrf", "lpfx",
1.176 schwarze 263: "ls", "lsm", "lt",
1.166 schwarze 264: "mediasize", "minss", "mk", "mso",
265: "na", "ne", "nh", "nhychar",
266: "nm", "nn", "nop", "nr",
267: "nrf", "nroff", "ns", "nx",
268: "open", "opena", "os", "output",
269: "padj", "papersize", "pc", "pev",
270: "pi", "PI", "pl", "pm",
1.184 schwarze 271: "pn", "pnr", "ps",
1.166 schwarze 272: "psbb", "pshape", "pso", "ptr",
273: "pvs", "rchar", "rd", "recursionlimit",
1.181 schwarze 274: "return", "rfschar", "rhang",
1.166 schwarze 275: "rm", "rn", "rnn", "rr",
276: "rs", "rt", "schar", "sentchar",
277: "shc", "shift", "sizes", "so",
278: "spacewidth", "special", "spreadwarn", "ss",
279: "sty", "substring", "sv", "sy",
1.172 schwarze 280: "T&", "tc", "TE",
1.173 schwarze 281: "TH", "tkf", "tl",
1.166 schwarze 282: "tm", "tm1", "tmc", "tr",
283: "track", "transchar", "trf", "trimat",
284: "trin", "trnt", "troff", "TS",
285: "uf", "ul", "unformat", "unwatch",
286: "unwatchn", "vpt", "vs", "warn",
287: "warnscale", "watch", "watchlength", "watchn",
288: "wh", "while", "write", "writec",
289: "writem", "xflag", ".", NULL,
1.178 schwarze 290: NULL, "text",
1.166 schwarze 291: "Dd", "Dt", "Os", "Sh",
292: "Ss", "Pp", "D1", "Dl",
293: "Bd", "Ed", "Bl", "El",
294: "It", "Ad", "An", "Ap",
295: "Ar", "Cd", "Cm", "Dv",
296: "Er", "Ev", "Ex", "Fa",
297: "Fd", "Fl", "Fn", "Ft",
298: "Ic", "In", "Li", "Nd",
299: "Nm", "Op", "Ot", "Pa",
300: "Rv", "St", "Va", "Vt",
301: "Xr", "%A", "%B", "%D",
302: "%I", "%J", "%N", "%O",
303: "%P", "%R", "%T", "%V",
304: "Ac", "Ao", "Aq", "At",
305: "Bc", "Bf", "Bo", "Bq",
306: "Bsx", "Bx", "Db", "Dc",
307: "Do", "Dq", "Ec", "Ef",
308: "Em", "Eo", "Fx", "Ms",
309: "No", "Ns", "Nx", "Ox",
310: "Pc", "Pf", "Po", "Pq",
311: "Qc", "Ql", "Qo", "Qq",
312: "Re", "Rs", "Sc", "So",
313: "Sq", "Sm", "Sx", "Sy",
314: "Tn", "Ux", "Xc", "Xo",
315: "Fo", "Fc", "Oo", "Oc",
316: "Bk", "Ek", "Bt", "Hf",
317: "Fr", "Ud", "Lb", "Lp",
318: "Lk", "Mt", "Brq", "Bro",
319: "Brc", "%C", "Es", "En",
1.171 schwarze 320: "Dx", "%Q", "%U", "Ta",
321: NULL,
1.166 schwarze 322: "TH", "SH", "SS", "TP",
323: "LP", "PP", "P", "IP",
324: "HP", "SM", "SB", "BI",
325: "IB", "BR", "RB", "R",
326: "B", "I", "IR", "RI",
1.171 schwarze 327: "nf", "fi",
1.166 schwarze 328: "RE", "RS", "DT", "UC",
1.169 schwarze 329: "PD", "AT", "in",
1.166 schwarze 330: "OP", "EX", "EE", "UR",
1.189 bentley 331: "UE", "MT", "ME", NULL
1.166 schwarze 332: };
333: const char *const *roff_name = __roff_name;
334:
335: static struct roffmac roffs[TOKEN_NONE] = {
1.168 schwarze 336: { roff_br, NULL, NULL, 0 }, /* br */
1.177 schwarze 337: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.169 schwarze 338: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.170 schwarze 339: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.176 schwarze 340: { roff_onearg, NULL, NULL, 0 }, /* mc */
1.184 schwarze 341: { roff_onearg, NULL, NULL, 0 }, /* po */
1.181 schwarze 342: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.171 schwarze 343: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.172 schwarze 344: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.173 schwarze 345: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.168 schwarze 346: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.167 schwarze 347: { roff_unsupp, NULL, NULL, 0 }, /* ab */
348: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
349: { roff_line_ignore, NULL, NULL, 0 }, /* af */
350: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.183 schwarze 351: { roff_als, NULL, NULL, 0 }, /* als */
1.167 schwarze 352: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
353: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
354: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
355: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
356: { roff_ds, NULL, NULL, 0 }, /* as */
357: { roff_ds, NULL, NULL, 0 }, /* as1 */
358: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
359: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
360: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
361: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
362: { roff_unsupp, NULL, NULL, 0 }, /* blm */
363: { roff_unsupp, NULL, NULL, 0 }, /* box */
364: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
365: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
366: { roff_unsupp, NULL, NULL, 0 }, /* BP */
367: { roff_unsupp, NULL, NULL, 0 }, /* break */
368: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
369: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.168 schwarze 370: { roff_br, NULL, NULL, 0 }, /* brp */
1.167 schwarze 371: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
372: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
373: { roff_cc, NULL, NULL, 0 }, /* cc */
374: { roff_insec, NULL, NULL, 0 }, /* cf */
375: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
376: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
377: { roff_unsupp, NULL, NULL, 0 }, /* char */
378: { roff_unsupp, NULL, NULL, 0 }, /* chop */
379: { roff_line_ignore, NULL, NULL, 0 }, /* class */
380: { roff_insec, NULL, NULL, 0 }, /* close */
381: { roff_unsupp, NULL, NULL, 0 }, /* CL */
382: { roff_line_ignore, NULL, NULL, 0 }, /* color */
383: { roff_unsupp, NULL, NULL, 0 }, /* composite */
384: { roff_unsupp, NULL, NULL, 0 }, /* continue */
385: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
386: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
387: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
388: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
389: { roff_unsupp, NULL, NULL, 0 }, /* da */
390: { roff_unsupp, NULL, NULL, 0 }, /* dch */
391: { roff_Dd, NULL, NULL, 0 }, /* Dd */
392: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
393: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
394: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
395: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
396: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
397: { roff_unsupp, NULL, NULL, 0 }, /* device */
398: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
399: { roff_unsupp, NULL, NULL, 0 }, /* di */
400: { roff_unsupp, NULL, NULL, 0 }, /* do */
401: { roff_ds, NULL, NULL, 0 }, /* ds */
402: { roff_ds, NULL, NULL, 0 }, /* ds1 */
403: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
404: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.175 schwarze 405: { roff_ec, NULL, NULL, 0 }, /* ec */
1.167 schwarze 406: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
407: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
408: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
409: { roff_unsupp, NULL, NULL, 0 }, /* em */
410: { roff_EN, NULL, NULL, 0 }, /* EN */
1.175 schwarze 411: { roff_eo, NULL, NULL, 0 }, /* eo */
1.167 schwarze 412: { roff_unsupp, NULL, NULL, 0 }, /* EP */
413: { roff_EQ, NULL, NULL, 0 }, /* EQ */
414: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
415: { roff_unsupp, NULL, NULL, 0 }, /* ev */
416: { roff_unsupp, NULL, NULL, 0 }, /* evc */
417: { roff_unsupp, NULL, NULL, 0 }, /* ex */
418: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
419: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
420: { roff_unsupp, NULL, NULL, 0 }, /* fc */
421: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
422: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
423: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
424: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
425: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
426: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
427: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
428: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
429: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
430: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
431: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
432: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
433: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
434: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
435: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
436: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
437: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
438: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
439: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
440: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
441: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
442: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
443: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
444: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
445: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
446: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
447: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
448: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
449: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
450: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
451: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
452: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
453: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
454: { roff_unsupp, NULL, NULL, 0 }, /* index */
455: { roff_it, NULL, NULL, 0 }, /* it */
456: { roff_unsupp, NULL, NULL, 0 }, /* itc */
457: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
458: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
459: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
460: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
461: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
462: { roff_unsupp, NULL, NULL, 0 }, /* lc */
463: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
464: { roff_unsupp, NULL, NULL, 0 }, /* lds */
465: { roff_unsupp, NULL, NULL, 0 }, /* length */
466: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
467: { roff_insec, NULL, NULL, 0 }, /* lf */
468: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
469: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
470: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
471: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
472: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
473: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
474: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
475: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
476: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
477: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
478: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
479: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
480: { roff_insec, NULL, NULL, 0 }, /* mso */
481: { roff_line_ignore, NULL, NULL, 0 }, /* na */
482: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
483: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
484: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
485: { roff_unsupp, NULL, NULL, 0 }, /* nm */
486: { roff_unsupp, NULL, NULL, 0 }, /* nn */
487: { roff_unsupp, NULL, NULL, 0 }, /* nop */
488: { roff_nr, NULL, NULL, 0 }, /* nr */
489: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
490: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
491: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
492: { roff_insec, NULL, NULL, 0 }, /* nx */
493: { roff_insec, NULL, NULL, 0 }, /* open */
494: { roff_insec, NULL, NULL, 0 }, /* opena */
495: { roff_line_ignore, NULL, NULL, 0 }, /* os */
496: { roff_unsupp, NULL, NULL, 0 }, /* output */
497: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
498: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
499: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
500: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
501: { roff_insec, NULL, NULL, 0 }, /* pi */
502: { roff_unsupp, NULL, NULL, 0 }, /* PI */
503: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
504: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
505: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
506: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
507: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
508: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
509: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
510: { roff_insec, NULL, NULL, 0 }, /* pso */
511: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
512: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
513: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
514: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
515: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
516: { roff_unsupp, NULL, NULL, 0 }, /* return */
517: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
518: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
519: { roff_rm, NULL, NULL, 0 }, /* rm */
1.178 schwarze 520: { roff_rn, NULL, NULL, 0 }, /* rn */
1.167 schwarze 521: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
522: { roff_rr, NULL, NULL, 0 }, /* rr */
523: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
524: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
525: { roff_unsupp, NULL, NULL, 0 }, /* schar */
526: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
527: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
528: { roff_unsupp, NULL, NULL, 0 }, /* shift */
529: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
530: { roff_so, NULL, NULL, 0 }, /* so */
531: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
532: { roff_line_ignore, NULL, NULL, 0 }, /* special */
533: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
534: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
535: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
536: { roff_unsupp, NULL, NULL, 0 }, /* substring */
537: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
538: { roff_insec, NULL, NULL, 0 }, /* sy */
539: { roff_T_, NULL, NULL, 0 }, /* T& */
540: { roff_unsupp, NULL, NULL, 0 }, /* tc */
541: { roff_TE, NULL, NULL, 0 }, /* TE */
1.187 schwarze 542: { roff_Dd, NULL, NULL, 0 }, /* TH */
1.167 schwarze 543: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
544: { roff_unsupp, NULL, NULL, 0 }, /* tl */
545: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
546: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
547: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
548: { roff_tr, NULL, NULL, 0 }, /* tr */
549: { roff_line_ignore, NULL, NULL, 0 }, /* track */
550: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
551: { roff_insec, NULL, NULL, 0 }, /* trf */
552: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
553: { roff_unsupp, NULL, NULL, 0 }, /* trin */
554: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
555: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
556: { roff_TS, NULL, NULL, 0 }, /* TS */
557: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
558: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
559: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
560: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
561: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
562: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
563: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
564: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
565: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
566: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
567: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
568: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
569: { roff_unsupp, NULL, NULL, 0 }, /* wh */
570: { roff_unsupp, NULL, NULL, 0 }, /* while */
571: { roff_insec, NULL, NULL, 0 }, /* write */
572: { roff_insec, NULL, NULL, 0 }, /* writec */
573: { roff_insec, NULL, NULL, 0 }, /* writem */
574: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
575: { roff_cblock, NULL, NULL, 0 }, /* . */
1.178 schwarze 576: { roff_renamed, NULL, NULL, 0 },
1.167 schwarze 577: { roff_userdef, NULL, NULL, 0 }
1.1 schwarze 578: };
579:
1.37 schwarze 580: /* Array of injected predefined strings. */
581: #define PREDEFS_MAX 38
582: static const struct predef predefs[PREDEFS_MAX] = {
583: #include "predefs.in"
584: };
585:
1.177 schwarze 586: static int roffce_lines; /* number of input lines to center */
587: static struct roff_node *roffce_node; /* active request */
1.51 schwarze 588: static int roffit_lines; /* number of lines to delay */
589: static char *roffit_macro; /* nil-terminated macro line */
590:
1.80 schwarze 591:
1.138 schwarze 592: /* --- request table ------------------------------------------------------ */
593:
1.167 schwarze 594: struct ohash *
595: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.3 schwarze 596: {
1.167 schwarze 597: struct ohash *htab;
598: struct roffreq *req;
599: enum roff_tok tok;
600: size_t sz;
601: unsigned int slot;
1.3 schwarze 602:
1.167 schwarze 603: htab = mandoc_malloc(sizeof(*htab));
604: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.3 schwarze 605:
1.167 schwarze 606: for (tok = mintok; tok < maxtok; tok++) {
1.168 schwarze 607: if (roff_name[tok] == NULL)
608: continue;
1.167 schwarze 609: sz = strlen(roff_name[tok]);
610: req = mandoc_malloc(sizeof(*req) + sz + 1);
611: req->tok = tok;
612: memcpy(req->name, roff_name[tok], sz + 1);
613: slot = ohash_qlookup(htab, req->name);
614: ohash_insert(htab, slot, req);
1.3 schwarze 615: }
1.167 schwarze 616: return htab;
1.3 schwarze 617: }
618:
1.167 schwarze 619: void
620: roffhash_free(struct ohash *htab)
1.1 schwarze 621: {
1.167 schwarze 622: struct roffreq *req;
623: unsigned int slot;
1.1 schwarze 624:
1.167 schwarze 625: if (htab == NULL)
626: return;
627: for (req = ohash_first(htab, &slot); req != NULL;
628: req = ohash_next(htab, &slot))
629: free(req);
630: ohash_delete(htab);
631: free(htab);
632: }
633:
634: enum roff_tok
635: roffhash_find(struct ohash *htab, const char *name, size_t sz)
636: {
637: struct roffreq *req;
638: const char *end;
639:
640: if (sz) {
641: end = name + sz;
642: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
643: } else
644: req = ohash_find(htab, ohash_qlookup(htab, name));
645: return req == NULL ? TOKEN_NONE : req->tok;
1.1 schwarze 646: }
647:
1.138 schwarze 648: /* --- stack of request blocks -------------------------------------------- */
649:
1.1 schwarze 650: /*
651: * Pop the current node off of the stack of roff instructions currently
652: * pending.
653: */
654: static void
655: roffnode_pop(struct roff *r)
656: {
657: struct roffnode *p;
658:
1.2 schwarze 659: assert(r->last);
1.80 schwarze 660: p = r->last;
1.2 schwarze 661:
662: r->last = r->last->parent;
1.16 schwarze 663: free(p->name);
664: free(p->end);
1.1 schwarze 665: free(p);
666: }
667:
668: /*
669: * Push a roff node onto the instruction stack. This must later be
670: * removed with roffnode_pop().
671: */
1.11 schwarze 672: static void
1.166 schwarze 673: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.16 schwarze 674: int line, int col)
1.1 schwarze 675: {
676: struct roffnode *p;
677:
1.11 schwarze 678: p = mandoc_calloc(1, sizeof(struct roffnode));
1.1 schwarze 679: p->tok = tok;
1.16 schwarze 680: if (name)
681: p->name = mandoc_strdup(name);
1.1 schwarze 682: p->parent = r->last;
683: p->line = line;
684: p->col = col;
1.71 schwarze 685: p->rule = p->parent ? p->parent->rule : 0;
1.1 schwarze 686:
687: r->last = p;
688: }
689:
1.138 schwarze 690: /* --- roff parser state data management ---------------------------------- */
691:
1.1 schwarze 692: static void
693: roff_free1(struct roff *r)
694: {
1.49 schwarze 695: struct tbl_node *tbl;
1.42 schwarze 696: int i;
1.27 schwarze 697:
1.49 schwarze 698: while (NULL != (tbl = r->first_tbl)) {
699: r->first_tbl = tbl->next;
700: tbl_free(tbl);
1.27 schwarze 701: }
702: r->first_tbl = r->last_tbl = r->tbl = NULL;
1.1 schwarze 703:
1.191 schwarze 704: if (r->last_eqn != NULL)
705: eqn_free(r->last_eqn);
706: r->last_eqn = r->eqn = NULL;
1.32 schwarze 707:
1.1 schwarze 708: while (r->last)
709: roffnode_pop(r);
1.27 schwarze 710:
1.96 schwarze 711: free (r->rstack);
712: r->rstack = NULL;
713: r->rstacksz = 0;
714: r->rstackpos = -1;
715:
716: roff_freereg(r->regtab);
717: r->regtab = NULL;
718:
1.42 schwarze 719: roff_freestr(r->strtab);
1.178 schwarze 720: roff_freestr(r->rentab);
1.42 schwarze 721: roff_freestr(r->xmbtab);
1.178 schwarze 722: r->strtab = r->rentab = r->xmbtab = NULL;
1.42 schwarze 723:
724: if (r->xtab)
725: for (i = 0; i < 128; i++)
726: free(r->xtab[i].p);
727: free(r->xtab);
728: r->xtab = NULL;
1.1 schwarze 729: }
730:
731: void
732: roff_reset(struct roff *r)
733: {
734: roff_free1(r);
1.99 schwarze 735: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.175 schwarze 736: r->control = '\0';
737: r->escape = '\\';
1.179 schwarze 738: roffce_lines = 0;
739: roffce_node = NULL;
740: roffit_lines = 0;
741: roffit_macro = NULL;
1.1 schwarze 742: }
743:
744: void
745: roff_free(struct roff *r)
746: {
747: roff_free1(r);
1.167 schwarze 748: roffhash_free(r->reqtab);
1.1 schwarze 749: free(r);
750: }
751:
752: struct roff *
1.151 schwarze 753: roff_alloc(struct mparse *parse, int options)
1.1 schwarze 754: {
755: struct roff *r;
756:
1.11 schwarze 757: r = mandoc_calloc(1, sizeof(struct roff));
1.35 schwarze 758: r->parse = parse;
1.167 schwarze 759: r->reqtab = roffhash_alloc(0, ROFF_USERDEF);
1.72 schwarze 760: r->options = options;
1.99 schwarze 761: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.2 schwarze 762: r->rstackpos = -1;
1.175 schwarze 763: r->escape = '\\';
1.149 schwarze 764: return r;
1.137 schwarze 765: }
766:
1.138 schwarze 767: /* --- syntax tree state data management ---------------------------------- */
768:
1.137 schwarze 769: static void
770: roff_man_free1(struct roff_man *man)
771: {
772:
1.138 schwarze 773: if (man->first != NULL)
774: roff_node_delete(man, man->first);
1.137 schwarze 775: free(man->meta.msec);
776: free(man->meta.vol);
777: free(man->meta.os);
778: free(man->meta.arch);
779: free(man->meta.title);
780: free(man->meta.name);
781: free(man->meta.date);
782: }
783:
784: static void
785: roff_man_alloc1(struct roff_man *man)
786: {
787:
788: memset(&man->meta, 0, sizeof(man->meta));
789: man->first = mandoc_calloc(1, sizeof(*man->first));
790: man->first->type = ROFFT_ROOT;
791: man->last = man->first;
792: man->last_es = NULL;
793: man->flags = 0;
794: man->macroset = MACROSET_NONE;
795: man->lastsec = man->lastnamed = SEC_NONE;
796: man->next = ROFF_NEXT_CHILD;
797: }
798:
799: void
800: roff_man_reset(struct roff_man *man)
801: {
802:
803: roff_man_free1(man);
804: roff_man_alloc1(man);
805: }
806:
807: void
808: roff_man_free(struct roff_man *man)
809: {
810:
811: roff_man_free1(man);
812: free(man);
813: }
814:
815: struct roff_man *
816: roff_man_alloc(struct roff *roff, struct mparse *parse,
1.188 schwarze 817: const char *os_s, int quick)
1.137 schwarze 818: {
819: struct roff_man *man;
820:
821: man = mandoc_calloc(1, sizeof(*man));
822: man->parse = parse;
823: man->roff = roff;
1.188 schwarze 824: man->os_s = os_s;
1.137 schwarze 825: man->quick = quick;
826: roff_man_alloc1(man);
1.168 schwarze 827: roff->man = man;
1.149 schwarze 828: return man;
1.1 schwarze 829: }
830:
1.138 schwarze 831: /* --- syntax tree handling ----------------------------------------------- */
832:
833: struct roff_node *
834: roff_node_alloc(struct roff_man *man, int line, int pos,
835: enum roff_type type, int tok)
836: {
837: struct roff_node *n;
838:
839: n = mandoc_calloc(1, sizeof(*n));
840: n->line = line;
841: n->pos = pos;
842: n->tok = tok;
843: n->type = type;
844: n->sec = man->lastsec;
845:
846: if (man->flags & MDOC_SYNOPSIS)
1.157 schwarze 847: n->flags |= NODE_SYNPRETTY;
1.138 schwarze 848: else
1.157 schwarze 849: n->flags &= ~NODE_SYNPRETTY;
1.138 schwarze 850: if (man->flags & MDOC_NEWLINE)
1.157 schwarze 851: n->flags |= NODE_LINE;
1.138 schwarze 852: man->flags &= ~MDOC_NEWLINE;
853:
1.149 schwarze 854: return n;
1.138 schwarze 855: }
856:
857: void
858: roff_node_append(struct roff_man *man, struct roff_node *n)
859: {
860:
861: switch (man->next) {
862: case ROFF_NEXT_SIBLING:
1.153 schwarze 863: if (man->last->next != NULL) {
864: n->next = man->last->next;
865: man->last->next->prev = n;
866: } else
867: man->last->parent->last = n;
1.138 schwarze 868: man->last->next = n;
869: n->prev = man->last;
870: n->parent = man->last->parent;
871: break;
872: case ROFF_NEXT_CHILD:
1.159 schwarze 873: if (man->last->child != NULL) {
874: n->next = man->last->child;
875: man->last->child->prev = n;
876: } else
877: man->last->last = n;
1.138 schwarze 878: man->last->child = n;
879: n->parent = man->last;
880: break;
881: default:
882: abort();
883: }
1.154 schwarze 884: man->last = n;
1.138 schwarze 885:
886: switch (n->type) {
887: case ROFFT_HEAD:
888: n->parent->head = n;
889: break;
890: case ROFFT_BODY:
1.154 schwarze 891: if (n->end != ENDBODY_NOT)
892: return;
1.138 schwarze 893: n->parent->body = n;
894: break;
895: case ROFFT_TAIL:
896: n->parent->tail = n;
897: break;
898: default:
1.154 schwarze 899: return;
1.138 schwarze 900: }
1.154 schwarze 901:
902: /*
903: * Copy over the normalised-data pointer of our parent. Not
904: * everybody has one, but copying a null pointer is fine.
905: */
906:
907: n->norm = n->parent->norm;
908: assert(n->parent->type == ROFFT_BLOCK);
1.138 schwarze 909: }
910:
1.139 schwarze 911: void
912: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
913: {
914: struct roff_node *n;
915:
916: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
917: n->string = roff_strdup(man->roff, word);
918: roff_node_append(man, n);
1.158 schwarze 919: n->flags |= NODE_VALID | NODE_ENDED;
1.139 schwarze 920: man->next = ROFF_NEXT_SIBLING;
921: }
922:
923: void
924: roff_word_append(struct roff_man *man, const char *word)
925: {
926: struct roff_node *n;
927: char *addstr, *newstr;
928:
929: n = man->last;
930: addstr = roff_strdup(man->roff, word);
931: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
932: free(addstr);
933: free(n->string);
934: n->string = newstr;
935: man->next = ROFF_NEXT_SIBLING;
1.140 schwarze 936: }
937:
938: void
939: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
940: {
941: struct roff_node *n;
942:
943: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
944: roff_node_append(man, n);
945: man->next = ROFF_NEXT_CHILD;
946: }
947:
948: struct roff_node *
949: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
950: {
951: struct roff_node *n;
952:
953: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
954: roff_node_append(man, n);
955: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 956: return n;
1.139 schwarze 957: }
958:
1.138 schwarze 959: struct roff_node *
960: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
961: {
962: struct roff_node *n;
963:
964: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
965: roff_node_append(man, n);
966: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 967: return n;
1.138 schwarze 968: }
969:
970: struct roff_node *
971: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
972: {
973: struct roff_node *n;
974:
975: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
976: roff_node_append(man, n);
977: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 978: return n;
1.139 schwarze 979: }
980:
1.193 ! schwarze 981: static void
! 982: roff_addtbl(struct roff_man *man, struct tbl_node *tbl)
1.139 schwarze 983: {
984: struct roff_node *n;
1.193 ! schwarze 985: const struct tbl_span *span;
1.139 schwarze 986:
987: if (man->macroset == MACROSET_MAN)
1.174 schwarze 988: man_breakscope(man, ROFF_TS);
1.193 ! schwarze 989: while ((span = tbl_span(tbl)) != NULL) {
! 990: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
! 991: n->span = span;
! 992: roff_node_append(man, n);
! 993: n->flags |= NODE_VALID | NODE_ENDED;
! 994: man->next = ROFF_NEXT_SIBLING;
! 995: }
1.138 schwarze 996: }
997:
998: void
999: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1000: {
1001:
1002: /* Adjust siblings. */
1003:
1004: if (n->prev)
1005: n->prev->next = n->next;
1006: if (n->next)
1007: n->next->prev = n->prev;
1008:
1009: /* Adjust parent. */
1010:
1011: if (n->parent != NULL) {
1012: if (n->parent->child == n)
1013: n->parent->child = n->next;
1014: if (n->parent->last == n)
1015: n->parent->last = n->prev;
1016: }
1017:
1018: /* Adjust parse point. */
1019:
1020: if (man == NULL)
1021: return;
1022: if (man->last == n) {
1023: if (n->prev == NULL) {
1024: man->last = n->parent;
1025: man->next = ROFF_NEXT_CHILD;
1026: } else {
1027: man->last = n->prev;
1028: man->next = ROFF_NEXT_SIBLING;
1029: }
1030: }
1031: if (man->first == n)
1032: man->first = NULL;
1033: }
1034:
1035: void
1036: roff_node_free(struct roff_node *n)
1037: {
1038:
1039: if (n->args != NULL)
1040: mdoc_argv_free(n->args);
1041: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1042: free(n->norm);
1.191 schwarze 1043: if (n->eqn != NULL)
1044: eqn_box_free(n->eqn);
1.138 schwarze 1045: free(n->string);
1046: free(n);
1047: }
1048:
1049: void
1050: roff_node_delete(struct roff_man *man, struct roff_node *n)
1051: {
1052:
1053: while (n->child != NULL)
1054: roff_node_delete(man, n->child);
1055: roff_node_unlink(man, n);
1056: roff_node_free(n);
1.141 schwarze 1057: }
1058:
1059: void
1060: deroff(char **dest, const struct roff_node *n)
1061: {
1062: char *cp;
1063: size_t sz;
1064:
1065: if (n->type != ROFFT_TEXT) {
1066: for (n = n->child; n != NULL; n = n->next)
1067: deroff(dest, n);
1068: return;
1069: }
1070:
1.160 schwarze 1071: /* Skip leading whitespace. */
1.141 schwarze 1072:
1.160 schwarze 1073: for (cp = n->string; *cp != '\0'; cp++) {
1.161 schwarze 1074: if (cp[0] == '\\' && cp[1] != '\0' &&
1075: strchr(" %&0^|~", cp[1]) != NULL)
1.141 schwarze 1076: cp++;
1.160 schwarze 1077: else if ( ! isspace((unsigned char)*cp))
1.141 schwarze 1078: break;
1079: }
1080:
1.161 schwarze 1081: /* Skip trailing backslash. */
1082:
1083: sz = strlen(cp);
1.162 schwarze 1084: if (sz > 0 && cp[sz - 1] == '\\')
1.161 schwarze 1085: sz--;
1086:
1.141 schwarze 1087: /* Skip trailing whitespace. */
1088:
1.161 schwarze 1089: for (; sz; sz--)
1.141 schwarze 1090: if ( ! isspace((unsigned char)cp[sz-1]))
1091: break;
1092:
1093: /* Skip empty strings. */
1094:
1095: if (sz == 0)
1096: return;
1097:
1098: if (*dest == NULL) {
1099: *dest = mandoc_strndup(cp, sz);
1100: return;
1101: }
1102:
1103: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1104: free(*dest);
1105: *dest = cp;
1.138 schwarze 1106: }
1107:
1108: /* --- main functions of the roff parser ---------------------------------- */
1109:
1.8 schwarze 1110: /*
1.79 schwarze 1111: * In the current line, expand escape sequences that tend to get
1112: * used in numerical expressions and conditional requests.
1113: * Also check the syntax of the remaining escape sequences.
1.8 schwarze 1114: */
1.45 schwarze 1115: static enum rofferr
1.110 schwarze 1116: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.8 schwarze 1117: {
1.81 schwarze 1118: char ubuf[24]; /* buffer to print the number */
1.78 schwarze 1119: const char *start; /* start of the string to process */
1.82 schwarze 1120: char *stesc; /* start of an escape sequence ('\\') */
1.23 schwarze 1121: const char *stnam; /* start of the name, after "[(*" */
1122: const char *cp; /* end of the name, e.g. before ']' */
1123: const char *res; /* the string to be substituted */
1.110 schwarze 1124: char *nbuf; /* new buffer to copy buf->buf to */
1.53 schwarze 1125: size_t maxl; /* expected length of the escape name */
1126: size_t naml; /* actual length of the escape name */
1.109 schwarze 1127: enum mandoc_esc esc; /* type of the escape sequence */
1.188 schwarze 1128: enum mandoc_os os_e; /* kind of RCS id seen */
1.109 schwarze 1129: int inaml; /* length returned from mandoc_escape() */
1.53 schwarze 1130: int expand_count; /* to avoid infinite loops */
1.79 schwarze 1131: int npos; /* position in numeric expression */
1.91 schwarze 1132: int arg_complete; /* argument not interrupted by eol */
1.175 schwarze 1133: int done; /* no more input available */
1.187 schwarze 1134: int deftype; /* type of definition to paste */
1.79 schwarze 1135: char term; /* character terminating the escape */
1.8 schwarze 1136:
1.175 schwarze 1137: /* Search forward for comments. */
1138:
1139: done = 0;
1140: start = buf->buf + pos;
1141: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1142: if (stesc[0] != r->escape || stesc[1] == '\0')
1143: continue;
1144: stesc++;
1145: if (*stesc != '"' && *stesc != '#')
1146: continue;
1.185 schwarze 1147:
1148: /* Comment found, look for RCS id. */
1149:
1150: if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
1.188 schwarze 1151: os_e = MANDOC_OS_OPENBSD;
1.185 schwarze 1152: cp += 8;
1153: } else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
1.188 schwarze 1154: os_e = MANDOC_OS_NETBSD;
1.185 schwarze 1155: cp += 7;
1156: }
1157: if (cp != NULL &&
1158: isalnum((unsigned char)*cp) == 0 &&
1.186 schwarze 1159: strchr(cp, '$') != NULL) {
1160: if (r->man->meta.rcsids & (1 << os_e))
1161: mandoc_msg(MANDOCERR_RCS_REP, r->parse,
1162: ln, stesc + 1 - buf->buf, stesc + 1);
1.185 schwarze 1163: r->man->meta.rcsids |= 1 << os_e;
1.186 schwarze 1164: }
1.185 schwarze 1165:
1166: /* Handle trailing whitespace. */
1167:
1.175 schwarze 1168: cp = strchr(stesc--, '\0') - 1;
1169: if (*cp == '\n') {
1170: done = 1;
1171: cp--;
1172: }
1173: if (*cp == ' ' || *cp == '\t')
1174: mandoc_msg(MANDOCERR_SPACE_EOL, r->parse,
1175: ln, cp - buf->buf, NULL);
1176: while (stesc > start && stesc[-1] == ' ')
1177: stesc--;
1178: *stesc = '\0';
1179: break;
1180: }
1181: if (stesc == start)
1182: return ROFF_CONT;
1183: stesc--;
1184:
1185: /* Notice the end of the input. */
1186:
1187: if (*stesc == '\n') {
1188: *stesc-- = '\0';
1189: done = 1;
1190: }
1191:
1.43 schwarze 1192: expand_count = 0;
1.175 schwarze 1193: while (stesc >= start) {
1.43 schwarze 1194:
1.78 schwarze 1195: /* Search backwards for the next backslash. */
1196:
1.175 schwarze 1197: if (*stesc != r->escape) {
1198: if (*stesc == '\\') {
1199: *stesc = '\0';
1200: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1201: buf->buf, stesc + 1) + 1;
1202: start = nbuf + pos;
1203: stesc = nbuf + (stesc - buf->buf);
1204: free(buf->buf);
1205: buf->buf = nbuf;
1206: }
1207: stesc--;
1.78 schwarze 1208: continue;
1.175 schwarze 1209: }
1.78 schwarze 1210:
1211: /* If it is escaped, skip it. */
1212:
1213: for (cp = stesc - 1; cp >= start; cp--)
1.175 schwarze 1214: if (*cp != r->escape)
1.78 schwarze 1215: break;
1216:
1.110 schwarze 1217: if ((stesc - cp) % 2 == 0) {
1.175 schwarze 1218: while (stesc > cp)
1219: *stesc-- = '\\';
1.78 schwarze 1220: continue;
1.175 schwarze 1221: } else if (stesc[1] != '\0') {
1222: *stesc = '\\';
1223: } else {
1224: *stesc-- = '\0';
1225: if (done)
1226: continue;
1227: else
1228: return ROFF_APPEND;
1.78 schwarze 1229: }
1.23 schwarze 1230:
1.79 schwarze 1231: /* Decide whether to expand or to check only. */
1.23 schwarze 1232:
1.79 schwarze 1233: term = '\0';
1.78 schwarze 1234: cp = stesc + 1;
1.53 schwarze 1235: switch (*cp) {
1.80 schwarze 1236: case '*':
1.53 schwarze 1237: res = NULL;
1238: break;
1.80 schwarze 1239: case 'B':
1240: case 'w':
1.79 schwarze 1241: term = cp[1];
1242: /* FALLTHROUGH */
1.80 schwarze 1243: case 'n':
1.53 schwarze 1244: res = ubuf;
1245: break;
1246: default:
1.109 schwarze 1247: esc = mandoc_escape(&cp, &stnam, &inaml);
1248: if (esc == ESCAPE_ERROR ||
1249: (esc == ESCAPE_SPECIAL &&
1.151 schwarze 1250: mchars_spec2cp(stnam, inaml) < 0))
1.92 schwarze 1251: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.110 schwarze 1252: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1253: "%.*s", (int)(cp - stesc), stesc);
1.175 schwarze 1254: stesc--;
1.78 schwarze 1255: continue;
1.42 schwarze 1256: }
1257:
1.78 schwarze 1258: if (EXPAND_LIMIT < ++expand_count) {
1259: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.110 schwarze 1260: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1261: return ROFF_IGN;
1.78 schwarze 1262: }
1.23 schwarze 1263:
1264: /*
1265: * The third character decides the length
1.53 schwarze 1266: * of the name of the string or register.
1.23 schwarze 1267: * Save a pointer to the name.
1268: */
1269:
1.110 schwarze 1270: if (term == '\0') {
1.79 schwarze 1271: switch (*++cp) {
1.80 schwarze 1272: case '\0':
1.79 schwarze 1273: maxl = 0;
1274: break;
1.80 schwarze 1275: case '(':
1.79 schwarze 1276: cp++;
1277: maxl = 2;
1278: break;
1.80 schwarze 1279: case '[':
1.79 schwarze 1280: cp++;
1281: term = ']';
1282: maxl = 0;
1283: break;
1284: default:
1285: maxl = 1;
1286: break;
1287: }
1288: } else {
1289: cp += 2;
1.8 schwarze 1290: maxl = 0;
1291: }
1.23 schwarze 1292: stnam = cp;
1.8 schwarze 1293:
1.23 schwarze 1294: /* Advance to the end of the name. */
1.8 schwarze 1295:
1.125 schwarze 1296: naml = 0;
1.91 schwarze 1297: arg_complete = 1;
1.125 schwarze 1298: while (maxl == 0 || naml < maxl) {
1.110 schwarze 1299: if (*cp == '\0') {
1.92 schwarze 1300: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 1301: ln, (int)(stesc - buf->buf), stesc);
1.91 schwarze 1302: arg_complete = 0;
1.79 schwarze 1303: break;
1.42 schwarze 1304: }
1.110 schwarze 1305: if (maxl == 0 && *cp == term) {
1.79 schwarze 1306: cp++;
1.125 schwarze 1307: break;
1308: }
1309: if (*cp++ != '\\' || stesc[1] != 'w') {
1310: naml++;
1311: continue;
1312: }
1313: switch (mandoc_escape(&cp, NULL, NULL)) {
1314: case ESCAPE_SPECIAL:
1315: case ESCAPE_UNICODE:
1316: case ESCAPE_NUMBERED:
1317: case ESCAPE_OVERSTRIKE:
1318: naml++;
1319: break;
1320: default:
1.8 schwarze 1321: break;
1.79 schwarze 1322: }
1.8 schwarze 1323: }
1324:
1.23 schwarze 1325: /*
1326: * Retrieve the replacement string; if it is
1327: * undefined, resume searching for escapes.
1328: */
1329:
1.79 schwarze 1330: switch (stesc[1]) {
1.80 schwarze 1331: case '*':
1.187 schwarze 1332: if (arg_complete) {
1333: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1334: res = roff_getstrn(r, stnam, naml, &deftype);
1335: }
1.79 schwarze 1336: break;
1.80 schwarze 1337: case 'B':
1.79 schwarze 1338: npos = 0;
1.91 schwarze 1339: ubuf[0] = arg_complete &&
1.133 schwarze 1340: roff_evalnum(r, ln, stnam, &npos,
1341: NULL, ROFFNUM_SCALE) &&
1.91 schwarze 1342: stnam + npos + 1 == cp ? '1' : '0';
1.79 schwarze 1343: ubuf[1] = '\0';
1344: break;
1.80 schwarze 1345: case 'n':
1.91 schwarze 1346: if (arg_complete)
1347: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1348: roff_getregn(r, stnam, naml));
1349: else
1350: ubuf[0] = '\0';
1.79 schwarze 1351: break;
1.80 schwarze 1352: case 'w':
1.91 schwarze 1353: /* use even incomplete args */
1.81 schwarze 1354: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.79 schwarze 1355: 24 * (int)naml);
1356: break;
1357: }
1.8 schwarze 1358:
1.110 schwarze 1359: if (res == NULL) {
1.92 schwarze 1360: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1361: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1362: "%.*s", (int)naml, stnam);
1.37 schwarze 1363: res = "";
1.118 schwarze 1364: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1365: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1366: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1367: return ROFF_IGN;
1.8 schwarze 1368: }
1369:
1.23 schwarze 1370: /* Replace the escape sequence by the string. */
1371:
1.82 schwarze 1372: *stesc = '\0';
1.110 schwarze 1373: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1374: buf->buf, res, cp) + 1;
1.8 schwarze 1375:
1.78 schwarze 1376: /* Prepare for the next replacement. */
1.8 schwarze 1377:
1.78 schwarze 1378: start = nbuf + pos;
1.110 schwarze 1379: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1380: free(buf->buf);
1381: buf->buf = nbuf;
1.42 schwarze 1382: }
1.149 schwarze 1383: return ROFF_CONT;
1.42 schwarze 1384: }
1385:
1386: /*
1.147 schwarze 1387: * Process text streams.
1.42 schwarze 1388: */
1389: static enum rofferr
1.177 schwarze 1390: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.42 schwarze 1391: {
1392: size_t sz;
1393: const char *start;
1.51 schwarze 1394: char *p;
1395: int isz;
1.42 schwarze 1396: enum mandoc_esc esc;
1397:
1.147 schwarze 1398: /* Spring the input line trap. */
1399:
1400: if (roffit_lines == 1) {
1401: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1402: free(buf->buf);
1403: buf->buf = p;
1404: buf->sz = isz + 1;
1405: *offs = 0;
1406: free(roffit_macro);
1407: roffit_lines = 0;
1.149 schwarze 1408: return ROFF_REPARSE;
1.147 schwarze 1409: } else if (roffit_lines > 1)
1410: --roffit_lines;
1411:
1.177 schwarze 1412: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1413: if (roffce_lines < 1) {
1414: r->man->last = roffce_node;
1415: r->man->next = ROFF_NEXT_SIBLING;
1416: roffce_lines = 0;
1417: roffce_node = NULL;
1418: } else
1419: roffce_lines--;
1420: }
1421:
1.147 schwarze 1422: /* Convert all breakable hyphens into ASCII_HYPH. */
1423:
1.110 schwarze 1424: start = p = buf->buf + pos;
1.42 schwarze 1425:
1.110 schwarze 1426: while (*p != '\0') {
1.42 schwarze 1427: sz = strcspn(p, "-\\");
1428: p += sz;
1429:
1.110 schwarze 1430: if (*p == '\0')
1.42 schwarze 1431: break;
1432:
1.110 schwarze 1433: if (*p == '\\') {
1.42 schwarze 1434: /* Skip over escapes. */
1435: p++;
1.62 schwarze 1436: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.110 schwarze 1437: if (esc == ESCAPE_ERROR)
1.42 schwarze 1438: break;
1.136 schwarze 1439: while (*p == '-')
1440: p++;
1.42 schwarze 1441: continue;
1442: } else if (p == start) {
1443: p++;
1444: continue;
1445: }
1446:
1.44 schwarze 1447: if (isalpha((unsigned char)p[-1]) &&
1448: isalpha((unsigned char)p[1]))
1.42 schwarze 1449: *p = ASCII_HYPH;
1450: p++;
1.8 schwarze 1451: }
1.149 schwarze 1452: return ROFF_CONT;
1.8 schwarze 1453: }
1454:
1.1 schwarze 1455: enum rofferr
1.110 schwarze 1456: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.1 schwarze 1457: {
1.166 schwarze 1458: enum roff_tok t;
1.27 schwarze 1459: enum rofferr e;
1.110 schwarze 1460: int pos; /* parse point */
1.115 schwarze 1461: int spos; /* saved parse point for messages */
1.110 schwarze 1462: int ppos; /* original offset in buf->buf */
1463: int ctl; /* macro line (boolean) */
1464:
1465: ppos = pos = *offs;
1.1 schwarze 1466:
1.102 schwarze 1467: /* Handle in-line equation delimiters. */
1468:
1.108 schwarze 1469: if (r->tbl == NULL &&
1470: r->last_eqn != NULL && r->last_eqn->delim &&
1.102 schwarze 1471: (r->eqn == NULL || r->eqn_inline)) {
1.110 schwarze 1472: e = roff_eqndelim(r, buf, pos);
1.102 schwarze 1473: if (e == ROFF_REPARSE)
1.149 schwarze 1474: return e;
1.102 schwarze 1475: assert(e == ROFF_CONT);
1476: }
1477:
1478: /* Expand some escape sequences. */
1.8 schwarze 1479:
1.110 schwarze 1480: e = roff_res(r, buf, ln, pos);
1.175 schwarze 1481: if (e == ROFF_IGN || e == ROFF_APPEND)
1.149 schwarze 1482: return e;
1.110 schwarze 1483: assert(e == ROFF_CONT);
1.8 schwarze 1484:
1.110 schwarze 1485: ctl = roff_getcontrol(r, buf->buf, &pos);
1.35 schwarze 1486:
1.8 schwarze 1487: /*
1.2 schwarze 1488: * First, if a scope is open and we're not a macro, pass the
1.124 schwarze 1489: * text through the macro's filter.
1490: * Equations process all content themselves.
1491: * Tables process almost all content themselves, but we want
1492: * to warn about macros before passing it there.
1.2 schwarze 1493: */
1494:
1.124 schwarze 1495: if (r->last != NULL && ! ctl) {
1.2 schwarze 1496: t = r->last->tok;
1.110 schwarze 1497: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.166 schwarze 1498: if (e == ROFF_IGN)
1.149 schwarze 1499: return e;
1.166 schwarze 1500: assert(e == ROFF_CONT);
1.54 schwarze 1501: }
1.191 schwarze 1502: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1503: eqn_read(r->eqn, buf->buf + ppos);
1504: return ROFF_IGN;
1505: }
1.193 ! schwarze 1506: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
! 1507: tbl_read(r->tbl, ln, buf->buf, ppos);
! 1508: roff_addtbl(r->man, r->tbl);
! 1509: return ROFF_IGN;
! 1510: }
1.124 schwarze 1511: if ( ! ctl)
1.177 schwarze 1512: return roff_parsetext(r, buf, pos, offs);
1.100 schwarze 1513:
1514: /* Skip empty request lines. */
1515:
1.110 schwarze 1516: if (buf->buf[pos] == '"') {
1.100 schwarze 1517: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1518: ln, pos, NULL);
1.149 schwarze 1519: return ROFF_IGN;
1.110 schwarze 1520: } else if (buf->buf[pos] == '\0')
1.149 schwarze 1521: return ROFF_IGN;
1.2 schwarze 1522:
1523: /*
1524: * If a scope is open, go to the child handler for that macro,
1525: * as it may want to preprocess before doing anything with it.
1.32 schwarze 1526: * Don't do so if an equation is open.
1.2 schwarze 1527: */
1528:
1529: if (r->last) {
1.1 schwarze 1530: t = r->last->tok;
1.149 schwarze 1531: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1532: }
1533:
1.115 schwarze 1534: /* No scope is open. This is a new request or macro. */
1535:
1536: spos = pos;
1537: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1538:
1539: /* Tables ignore most macros. */
1540:
1.180 schwarze 1541: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.181 schwarze 1542: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.115 schwarze 1543: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1544: ln, pos, buf->buf + spos);
1.180 schwarze 1545: if (t != TOKEN_NONE)
1.149 schwarze 1546: return ROFF_IGN;
1.129 schwarze 1547: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1548: pos++;
1.163 schwarze 1549: while (buf->buf[pos] == ' ')
1.129 schwarze 1550: pos++;
1.193 ! schwarze 1551: tbl_read(r->tbl, ln, buf->buf, pos);
! 1552: roff_addtbl(r->man, r->tbl);
! 1553: return ROFF_IGN;
1.115 schwarze 1554: }
1555:
1.177 schwarze 1556: /* For now, let high level macros abort .ce mode. */
1557:
1558: if (ctl && roffce_node != NULL &&
1559: (t == TOKEN_NONE || t == ROFF_EQ || t == ROFF_TS)) {
1560: r->man->last = roffce_node;
1561: r->man->next = ROFF_NEXT_SIBLING;
1562: roffce_lines = 0;
1563: roffce_node = NULL;
1564: }
1565:
1.2 schwarze 1566: /*
1.115 schwarze 1567: * This is neither a roff request nor a user-defined macro.
1568: * Let the standard macro set parsers handle it.
1.2 schwarze 1569: */
1570:
1.166 schwarze 1571: if (t == TOKEN_NONE)
1.149 schwarze 1572: return ROFF_CONT;
1.115 schwarze 1573:
1574: /* Execute a roff request or a user defined macro. */
1.1 schwarze 1575:
1.168 schwarze 1576: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.2 schwarze 1577: }
1578:
1.27 schwarze 1579: void
1.2 schwarze 1580: roff_endparse(struct roff *r)
1581: {
1.193 ! schwarze 1582: if (r->last != NULL)
1.94 schwarze 1583: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1584: r->last->line, r->last->col,
1.167 schwarze 1585: roff_name[r->last->tok]);
1.27 schwarze 1586:
1.193 ! schwarze 1587: if (r->eqn != NULL) {
1.94 schwarze 1588: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1.191 schwarze 1589: r->eqn->node->line, r->eqn->node->pos, "EQ");
1590: eqn_parse(r->eqn);
1591: r->eqn = NULL;
1.32 schwarze 1592: }
1593:
1.193 ! schwarze 1594: if (r->tbl != NULL) {
1.94 schwarze 1595: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1596: r->tbl->line, r->tbl->pos, "TS");
1.193 ! schwarze 1597: tbl_end(r->tbl);
! 1598: r->tbl = NULL;
1.27 schwarze 1599: }
1.1 schwarze 1600: }
1601:
1602: /*
1603: * Parse a roff node's type from the input buffer. This must be in the
1604: * form of ".foo xxx" in the usual way.
1605: */
1.166 schwarze 1606: static enum roff_tok
1.87 schwarze 1607: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.1 schwarze 1608: {
1.87 schwarze 1609: char *cp;
1.16 schwarze 1610: const char *mac;
1611: size_t maclen;
1.187 schwarze 1612: int deftype;
1.166 schwarze 1613: enum roff_tok t;
1.1 schwarze 1614:
1.87 schwarze 1615: cp = buf + *pos;
1616:
1617: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.166 schwarze 1618: return TOKEN_NONE;
1.1 schwarze 1619:
1.87 schwarze 1620: mac = cp;
1621: maclen = roff_getname(r, &cp, ln, ppos);
1.1 schwarze 1622:
1.187 schwarze 1623: deftype = ROFFDEF_USER | ROFFDEF_REN;
1624: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
1625: switch (deftype) {
1626: case ROFFDEF_USER:
1627: t = ROFF_USERDEF;
1628: break;
1629: case ROFFDEF_REN:
1630: t = ROFF_RENAMED;
1631: break;
1632: default:
1633: t = roffhash_find(r->reqtab, mac, maclen);
1634: break;
1635: }
1.166 schwarze 1636: if (t != TOKEN_NONE)
1.87 schwarze 1637: *pos = cp - buf;
1.149 schwarze 1638: return t;
1.1 schwarze 1639: }
1640:
1.138 schwarze 1641: /* --- handling of request blocks ----------------------------------------- */
1642:
1.1 schwarze 1643: static enum rofferr
1.2 schwarze 1644: roff_cblock(ROFF_ARGS)
1.1 schwarze 1645: {
1646:
1.2 schwarze 1647: /*
1648: * A block-close `..' should only be invoked as a child of an
1649: * ignore macro, otherwise raise a warning and just ignore it.
1650: */
1651:
1.110 schwarze 1652: if (r->last == NULL) {
1.94 schwarze 1653: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1654: ln, ppos, "..");
1.149 schwarze 1655: return ROFF_IGN;
1.2 schwarze 1656: }
1.1 schwarze 1657:
1.2 schwarze 1658: switch (r->last->tok) {
1.80 schwarze 1659: case ROFF_am:
1.93 schwarze 1660: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.80 schwarze 1661: case ROFF_ami:
1662: case ROFF_de:
1.23 schwarze 1663: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.80 schwarze 1664: case ROFF_dei:
1665: case ROFF_ig:
1.2 schwarze 1666: break;
1667: default:
1.94 schwarze 1668: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1669: ln, ppos, "..");
1.149 schwarze 1670: return ROFF_IGN;
1.2 schwarze 1671: }
1672:
1.110 schwarze 1673: if (buf->buf[pos] != '\0')
1.90 schwarze 1674: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 1675: ".. %s", buf->buf + pos);
1.2 schwarze 1676:
1677: roffnode_pop(r);
1678: roffnode_cleanscope(r);
1.149 schwarze 1679: return ROFF_IGN;
1.2 schwarze 1680:
1681: }
1.1 schwarze 1682:
1.2 schwarze 1683: static void
1684: roffnode_cleanscope(struct roff *r)
1685: {
1.1 schwarze 1686:
1.2 schwarze 1687: while (r->last) {
1.46 schwarze 1688: if (--r->last->endspan != 0)
1.2 schwarze 1689: break;
1690: roffnode_pop(r);
1691: }
1692: }
1.1 schwarze 1693:
1.68 schwarze 1694: static void
1695: roff_ccond(struct roff *r, int ln, int ppos)
1.2 schwarze 1696: {
1.1 schwarze 1697:
1.2 schwarze 1698: if (NULL == r->last) {
1.94 schwarze 1699: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1700: ln, ppos, "\\}");
1.68 schwarze 1701: return;
1.2 schwarze 1702: }
1.1 schwarze 1703:
1.2 schwarze 1704: switch (r->last->tok) {
1.80 schwarze 1705: case ROFF_el:
1706: case ROFF_ie:
1707: case ROFF_if:
1.2 schwarze 1708: break;
1709: default:
1.94 schwarze 1710: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1711: ln, ppos, "\\}");
1.68 schwarze 1712: return;
1.2 schwarze 1713: }
1.1 schwarze 1714:
1.2 schwarze 1715: if (r->last->endspan > -1) {
1.94 schwarze 1716: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1717: ln, ppos, "\\}");
1.68 schwarze 1718: return;
1.2 schwarze 1719: }
1720:
1721: roffnode_pop(r);
1722: roffnode_cleanscope(r);
1.68 schwarze 1723: return;
1.1 schwarze 1724: }
1725:
1726: static enum rofferr
1.2 schwarze 1727: roff_block(ROFF_ARGS)
1.1 schwarze 1728: {
1.187 schwarze 1729: const char *name, *value;
1730: char *call, *cp, *iname, *rname;
1731: size_t csz, namesz, rsz;
1732: int deftype;
1.16 schwarze 1733:
1.93 schwarze 1734: /* Ignore groff compatibility mode for now. */
1.2 schwarze 1735:
1.110 schwarze 1736: if (tok == ROFF_de1)
1.93 schwarze 1737: tok = ROFF_de;
1.123 schwarze 1738: else if (tok == ROFF_dei1)
1739: tok = ROFF_dei;
1.110 schwarze 1740: else if (tok == ROFF_am1)
1.93 schwarze 1741: tok = ROFF_am;
1.123 schwarze 1742: else if (tok == ROFF_ami1)
1743: tok = ROFF_ami;
1.93 schwarze 1744:
1745: /* Parse the macro name argument. */
1746:
1.110 schwarze 1747: cp = buf->buf + pos;
1748: if (tok == ROFF_ig) {
1.93 schwarze 1749: iname = NULL;
1750: namesz = 0;
1751: } else {
1752: iname = cp;
1753: namesz = roff_getname(r, &cp, ln, ppos);
1754: iname[namesz] = '\0';
1755: }
1.22 schwarze 1756:
1.93 schwarze 1757: /* Resolve the macro name argument if it is indirect. */
1.22 schwarze 1758:
1.110 schwarze 1759: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.187 schwarze 1760: deftype = ROFFDEF_USER;
1761: name = roff_getstrn(r, iname, namesz, &deftype);
1762: if (name == NULL) {
1.93 schwarze 1763: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1764: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1765: "%.*s", (int)namesz, iname);
1766: namesz = 0;
1767: } else
1768: namesz = strlen(name);
1769: } else
1770: name = iname;
1.22 schwarze 1771:
1.110 schwarze 1772: if (namesz == 0 && tok != ROFF_ig) {
1.93 schwarze 1773: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1.167 schwarze 1774: ln, ppos, roff_name[tok]);
1.149 schwarze 1775: return ROFF_IGN;
1.93 schwarze 1776: }
1.2 schwarze 1777:
1.16 schwarze 1778: roffnode_push(r, tok, name, ln, ppos);
1779:
1780: /*
1781: * At the beginning of a `de' macro, clear the existing string
1782: * with the same name, if there is one. New content will be
1.66 schwarze 1783: * appended from roff_block_text() in multiline mode.
1.16 schwarze 1784: */
1.22 schwarze 1785:
1.183 schwarze 1786: if (tok == ROFF_de || tok == ROFF_dei) {
1.86 schwarze 1787: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.183 schwarze 1788: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.187 schwarze 1789: } else if (tok == ROFF_am || tok == ROFF_ami) {
1790: deftype = ROFFDEF_ANY;
1791: value = roff_getstrn(r, iname, namesz, &deftype);
1792: switch (deftype) { /* Before appending, ... */
1793: case ROFFDEF_PRE: /* copy predefined to user-defined. */
1794: roff_setstrn(&r->strtab, name, namesz,
1795: value, strlen(value), 0);
1796: break;
1797: case ROFFDEF_REN: /* call original standard macro. */
1798: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1799: (int)strlen(value), value);
1800: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1801: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1802: free(call);
1803: break;
1804: case ROFFDEF_STD: /* rename and call standard macro. */
1805: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
1806: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
1807: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1808: (int)rsz, rname);
1809: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1810: free(call);
1811: free(rname);
1812: break;
1813: default:
1814: break;
1815: }
1.183 schwarze 1816: }
1.2 schwarze 1817:
1.110 schwarze 1818: if (*cp == '\0')
1.149 schwarze 1819: return ROFF_IGN;
1.1 schwarze 1820:
1.93 schwarze 1821: /* Get the custom end marker. */
1.22 schwarze 1822:
1.93 schwarze 1823: iname = cp;
1.86 schwarze 1824: namesz = roff_getname(r, &cp, ln, ppos);
1.93 schwarze 1825:
1826: /* Resolve the end marker if it is indirect. */
1827:
1.110 schwarze 1828: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.187 schwarze 1829: deftype = ROFFDEF_USER;
1830: name = roff_getstrn(r, iname, namesz, &deftype);
1831: if (name == NULL) {
1.93 schwarze 1832: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1833: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1834: "%.*s", (int)namesz, iname);
1835: namesz = 0;
1836: } else
1837: namesz = strlen(name);
1838: } else
1839: name = iname;
1840:
1.86 schwarze 1841: if (namesz)
1842: r->last->end = mandoc_strndup(name, namesz);
1.2 schwarze 1843:
1.110 schwarze 1844: if (*cp != '\0')
1.90 schwarze 1845: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1.167 schwarze 1846: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.1 schwarze 1847:
1.149 schwarze 1848: return ROFF_IGN;
1.1 schwarze 1849: }
1850:
1851: static enum rofferr
1.2 schwarze 1852: roff_block_sub(ROFF_ARGS)
1.1 schwarze 1853: {
1.166 schwarze 1854: enum roff_tok t;
1.2 schwarze 1855: int i, j;
1856:
1857: /*
1858: * First check whether a custom macro exists at this level. If
1859: * it does, then check against it. This is some of groff's
1860: * stranger behaviours. If we encountered a custom end-scope
1861: * tag and that tag also happens to be a "real" macro, then we
1862: * need to try interpreting it again as a real macro. If it's
1863: * not, then return ignore. Else continue.
1864: */
1865:
1866: if (r->last->end) {
1.35 schwarze 1867: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.110 schwarze 1868: if (buf->buf[i] != r->last->end[j])
1.2 schwarze 1869: break;
1.1 schwarze 1870:
1.110 schwarze 1871: if (r->last->end[j] == '\0' &&
1872: (buf->buf[i] == '\0' ||
1873: buf->buf[i] == ' ' ||
1874: buf->buf[i] == '\t')) {
1.2 schwarze 1875: roffnode_pop(r);
1876: roffnode_cleanscope(r);
1.1 schwarze 1877:
1.110 schwarze 1878: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.35 schwarze 1879: i++;
1880:
1881: pos = i;
1.110 schwarze 1882: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.166 schwarze 1883: TOKEN_NONE)
1.149 schwarze 1884: return ROFF_RERUN;
1885: return ROFF_IGN;
1.2 schwarze 1886: }
1.1 schwarze 1887: }
1888:
1.2 schwarze 1889: /*
1890: * If we have no custom end-query or lookup failed, then try
1891: * pulling it out of the hashtable.
1892: */
1.1 schwarze 1893:
1.110 schwarze 1894: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.1 schwarze 1895:
1.110 schwarze 1896: if (t != ROFF_cblock) {
1897: if (tok != ROFF_ig)
1898: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.149 schwarze 1899: return ROFF_IGN;
1.16 schwarze 1900: }
1.1 schwarze 1901:
1.149 schwarze 1902: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1903: }
1904:
1905: static enum rofferr
1906: roff_block_text(ROFF_ARGS)
1907: {
1908:
1.110 schwarze 1909: if (tok != ROFF_ig)
1910: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.16 schwarze 1911:
1.149 schwarze 1912: return ROFF_IGN;
1.2 schwarze 1913: }
1914:
1915: static enum rofferr
1916: roff_cond_sub(ROFF_ARGS)
1917: {
1.166 schwarze 1918: enum roff_tok t;
1.37 schwarze 1919: char *ep;
1.71 schwarze 1920: int rr;
1.2 schwarze 1921:
1922: rr = r->last->rule;
1.37 schwarze 1923: roffnode_cleanscope(r);
1.39 schwarze 1924:
1.69 schwarze 1925: /*
1926: * If `\}' occurs on a macro line without a preceding macro,
1927: * drop the line completely.
1928: */
1929:
1.110 schwarze 1930: ep = buf->buf + pos;
1931: if (ep[0] == '\\' && ep[1] == '}')
1.71 schwarze 1932: rr = 0;
1.69 schwarze 1933:
1.50 schwarze 1934: /* Always check for the closing delimiter `\}'. */
1.39 schwarze 1935:
1.110 schwarze 1936: while ((ep = strchr(ep, '\\')) != NULL) {
1.190 schwarze 1937: switch (ep[1]) {
1938: case '}':
1939: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1940: roff_ccond(r, ln, ep - buf->buf);
1941: break;
1942: case '\0':
1943: ++ep;
1944: break;
1945: default:
1946: ep += 2;
1947: break;
1.70 schwarze 1948: }
1.50 schwarze 1949: }
1.190 schwarze 1950:
1951: /*
1952: * Fully handle known macros when they are structurally
1953: * required or when the conditional evaluated to true.
1954: */
1955:
1956: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1957: return t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT)
1958: ? (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs) : rr
1959: ? ROFF_CONT : ROFF_IGN;
1.2 schwarze 1960: }
1961:
1962: static enum rofferr
1963: roff_cond_text(ROFF_ARGS)
1964: {
1.37 schwarze 1965: char *ep;
1.71 schwarze 1966: int rr;
1.2 schwarze 1967:
1968: rr = r->last->rule;
1.37 schwarze 1969: roffnode_cleanscope(r);
1.1 schwarze 1970:
1.110 schwarze 1971: ep = buf->buf + pos;
1972: while ((ep = strchr(ep, '\\')) != NULL) {
1973: if (*(++ep) == '}') {
1.70 schwarze 1974: *ep = '&';
1.110 schwarze 1975: roff_ccond(r, ln, ep - buf->buf - 1);
1.70 schwarze 1976: }
1.119 schwarze 1977: if (*ep != '\0')
1978: ++ep;
1.2 schwarze 1979: }
1.149 schwarze 1980: return rr ? ROFF_CONT : ROFF_IGN;
1.2 schwarze 1981: }
1982:
1.138 schwarze 1983: /* --- handling of numeric and conditional expressions -------------------- */
1984:
1.77 schwarze 1985: /*
1986: * Parse a single signed integer number. Stop at the first non-digit.
1987: * If there is at least one digit, return success and advance the
1988: * parse point, else return failure and let the parse point unchanged.
1989: * Ignore overflows, treat them just like the C language.
1990: */
1.56 schwarze 1991: static int
1.133 schwarze 1992: roff_getnum(const char *v, int *pos, int *res, int flags)
1.56 schwarze 1993: {
1.133 schwarze 1994: int myres, scaled, n, p;
1.79 schwarze 1995:
1996: if (NULL == res)
1997: res = &myres;
1.56 schwarze 1998:
1999: p = *pos;
2000: n = v[p] == '-';
1.133 schwarze 2001: if (n || v[p] == '+')
1.56 schwarze 2002: p++;
2003:
1.133 schwarze 2004: if (flags & ROFFNUM_WHITE)
2005: while (isspace((unsigned char)v[p]))
2006: p++;
2007:
1.56 schwarze 2008: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.77 schwarze 2009: *res = 10 * *res + v[p] - '0';
1.56 schwarze 2010: if (p == *pos + n)
2011: return 0;
2012:
2013: if (n)
2014: *res = -*res;
2015:
1.126 schwarze 2016: /* Each number may be followed by one optional scaling unit. */
2017:
2018: switch (v[p]) {
2019: case 'f':
1.133 schwarze 2020: scaled = *res * 65536;
1.126 schwarze 2021: break;
2022: case 'i':
1.133 schwarze 2023: scaled = *res * 240;
1.126 schwarze 2024: break;
2025: case 'c':
1.133 schwarze 2026: scaled = *res * 240 / 2.54;
1.126 schwarze 2027: break;
2028: case 'v':
2029: case 'P':
1.133 schwarze 2030: scaled = *res * 40;
1.126 schwarze 2031: break;
2032: case 'm':
2033: case 'n':
1.133 schwarze 2034: scaled = *res * 24;
1.126 schwarze 2035: break;
2036: case 'p':
1.133 schwarze 2037: scaled = *res * 10 / 3;
1.126 schwarze 2038: break;
2039: case 'u':
1.133 schwarze 2040: scaled = *res;
1.126 schwarze 2041: break;
2042: case 'M':
1.133 schwarze 2043: scaled = *res * 6 / 25;
1.126 schwarze 2044: break;
2045: default:
1.133 schwarze 2046: scaled = *res;
1.126 schwarze 2047: p--;
2048: break;
2049: }
1.133 schwarze 2050: if (flags & ROFFNUM_SCALE)
2051: *res = scaled;
1.126 schwarze 2052:
2053: *pos = p + 1;
1.149 schwarze 2054: return 1;
1.56 schwarze 2055: }
2056:
1.71 schwarze 2057: /*
2058: * Evaluate a string comparison condition.
2059: * The first character is the delimiter.
2060: * Succeed if the string up to its second occurrence
2061: * matches the string up to its third occurence.
2062: * Advance the cursor after the third occurrence
2063: * or lacking that, to the end of the line.
2064: */
2065: static int
2066: roff_evalstrcond(const char *v, int *pos)
2067: {
2068: const char *s1, *s2, *s3;
2069: int match;
2070:
2071: match = 0;
2072: s1 = v + *pos; /* initial delimiter */
2073: s2 = s1 + 1; /* for scanning the first string */
2074: s3 = strchr(s2, *s1); /* for scanning the second string */
2075:
2076: if (NULL == s3) /* found no middle delimiter */
2077: goto out;
2078:
2079: while ('\0' != *++s3) {
2080: if (*s2 != *s3) { /* mismatch */
2081: s3 = strchr(s3, *s1);
2082: break;
2083: }
2084: if (*s3 == *s1) { /* found the final delimiter */
2085: match = 1;
2086: break;
2087: }
2088: s2++;
2089: }
2090:
2091: out:
2092: if (NULL == s3)
2093: s3 = strchr(s2, '\0');
1.114 schwarze 2094: else if (*s3 != '\0')
1.71 schwarze 2095: s3++;
2096: *pos = s3 - v;
1.149 schwarze 2097: return match;
1.71 schwarze 2098: }
2099:
1.77 schwarze 2100: /*
2101: * Evaluate an optionally negated single character, numerical,
2102: * or string condition.
2103: */
1.71 schwarze 2104: static int
1.143 schwarze 2105: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.5 schwarze 2106: {
1.143 schwarze 2107: char *cp, *name;
2108: size_t sz;
1.187 schwarze 2109: int deftype, number, savepos, istrue, wanttrue;
1.5 schwarze 2110:
1.71 schwarze 2111: if ('!' == v[*pos]) {
2112: wanttrue = 0;
2113: (*pos)++;
2114: } else
2115: wanttrue = 1;
2116:
1.5 schwarze 2117: switch (v[*pos]) {
1.112 schwarze 2118: case '\0':
1.149 schwarze 2119: return 0;
1.80 schwarze 2120: case 'n':
2121: case 'o':
1.5 schwarze 2122: (*pos)++;
1.149 schwarze 2123: return wanttrue;
1.80 schwarze 2124: case 'c':
2125: case 'e':
2126: case 't':
1.111 schwarze 2127: case 'v':
1.5 schwarze 2128: (*pos)++;
1.149 schwarze 2129: return !wanttrue;
1.182 schwarze 2130: case 'd':
1.143 schwarze 2131: case 'r':
1.182 schwarze 2132: cp = v + *pos + 1;
2133: while (*cp == ' ')
2134: cp++;
2135: name = cp;
2136: sz = roff_getname(r, &cp, ln, cp - v);
1.187 schwarze 2137: if (sz == 0)
2138: istrue = 0;
2139: else if (v[*pos] == 'r')
2140: istrue = roff_hasregn(r, name, sz);
2141: else {
2142: deftype = ROFFDEF_ANY;
2143: roff_getstrn(r, name, sz, &deftype);
2144: istrue = !!deftype;
2145: }
1.143 schwarze 2146: *pos = cp - v;
1.182 schwarze 2147: return istrue == wanttrue;
1.5 schwarze 2148: default:
2149: break;
2150: }
2151:
1.113 schwarze 2152: savepos = *pos;
1.133 schwarze 2153: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.149 schwarze 2154: return (number > 0) == wanttrue;
1.113 schwarze 2155: else if (*pos == savepos)
1.149 schwarze 2156: return roff_evalstrcond(v, pos) == wanttrue;
1.77 schwarze 2157: else
1.149 schwarze 2158: return 0;
1.5 schwarze 2159: }
2160:
1.2 schwarze 2161: static enum rofferr
1.21 schwarze 2162: roff_line_ignore(ROFF_ARGS)
1.6 schwarze 2163: {
1.30 schwarze 2164:
1.149 schwarze 2165: return ROFF_IGN;
1.21 schwarze 2166: }
2167:
2168: static enum rofferr
1.123 schwarze 2169: roff_insec(ROFF_ARGS)
2170: {
2171:
2172: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
1.167 schwarze 2173: ln, ppos, roff_name[tok]);
1.149 schwarze 2174: return ROFF_IGN;
1.123 schwarze 2175: }
2176:
2177: static enum rofferr
2178: roff_unsupp(ROFF_ARGS)
2179: {
2180:
2181: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
1.167 schwarze 2182: ln, ppos, roff_name[tok]);
1.149 schwarze 2183: return ROFF_IGN;
1.123 schwarze 2184: }
2185:
2186: static enum rofferr
1.2 schwarze 2187: roff_cond(ROFF_ARGS)
2188: {
1.46 schwarze 2189:
2190: roffnode_push(r, tok, NULL, ln, ppos);
1.2 schwarze 2191:
1.80 schwarze 2192: /*
1.35 schwarze 2193: * An `.el' has no conditional body: it will consume the value
2194: * of the current rstack entry set in prior `ie' calls or
1.80 schwarze 2195: * defaults to DENY.
1.35 schwarze 2196: *
2197: * If we're not an `el', however, then evaluate the conditional.
2198: */
1.1 schwarze 2199:
1.110 schwarze 2200: r->last->rule = tok == ROFF_el ?
1.80 schwarze 2201: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.110 schwarze 2202: roff_evalcond(r, ln, buf->buf, &pos);
1.2 schwarze 2203:
1.35 schwarze 2204: /*
2205: * An if-else will put the NEGATION of the current evaluated
2206: * conditional into the stack of rules.
2207: */
2208:
1.110 schwarze 2209: if (tok == ROFF_ie) {
1.96 schwarze 2210: if (r->rstackpos + 1 == r->rstacksz) {
2211: r->rstacksz += 16;
2212: r->rstack = mandoc_reallocarray(r->rstack,
2213: r->rstacksz, sizeof(int));
1.35 schwarze 2214: }
1.71 schwarze 2215: r->rstack[++r->rstackpos] = !r->last->rule;
1.2 schwarze 2216: }
1.5 schwarze 2217:
2218: /* If the parent has false as its rule, then so do we. */
2219:
1.71 schwarze 2220: if (r->last->parent && !r->last->parent->rule)
2221: r->last->rule = 0;
1.5 schwarze 2222:
2223: /*
1.46 schwarze 2224: * Determine scope.
2225: * If there is nothing on the line after the conditional,
2226: * not even whitespace, use next-line scope.
1.5 schwarze 2227: */
1.2 schwarze 2228:
1.110 schwarze 2229: if (buf->buf[pos] == '\0') {
1.46 schwarze 2230: r->last->endspan = 2;
2231: goto out;
2232: }
2233:
1.110 schwarze 2234: while (buf->buf[pos] == ' ')
1.46 schwarze 2235: pos++;
2236:
2237: /* An opening brace requests multiline scope. */
1.2 schwarze 2238:
1.110 schwarze 2239: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.2 schwarze 2240: r->last->endspan = -1;
2241: pos += 2;
1.144 schwarze 2242: while (buf->buf[pos] == ' ')
2243: pos++;
1.46 schwarze 2244: goto out;
1.80 schwarze 2245: }
1.2 schwarze 2246:
2247: /*
1.46 schwarze 2248: * Anything else following the conditional causes
2249: * single-line scope. Warn if the scope contains
2250: * nothing but trailing whitespace.
1.2 schwarze 2251: */
2252:
1.110 schwarze 2253: if (buf->buf[pos] == '\0')
1.89 schwarze 2254: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
1.167 schwarze 2255: ln, ppos, roff_name[tok]);
1.2 schwarze 2256:
1.46 schwarze 2257: r->last->endspan = 1;
1.1 schwarze 2258:
1.46 schwarze 2259: out:
1.2 schwarze 2260: *offs = pos;
1.149 schwarze 2261: return ROFF_RERUN;
1.1 schwarze 2262: }
2263:
1.2 schwarze 2264: static enum rofferr
1.7 schwarze 2265: roff_ds(ROFF_ARGS)
2266: {
1.85 schwarze 2267: char *string;
2268: const char *name;
2269: size_t namesz;
1.10 schwarze 2270:
1.123 schwarze 2271: /* Ignore groff compatibility mode for now. */
2272:
2273: if (tok == ROFF_ds1)
2274: tok = ROFF_ds;
2275: else if (tok == ROFF_as1)
2276: tok = ROFF_as;
2277:
1.10 schwarze 2278: /*
1.85 schwarze 2279: * The first word is the name of the string.
2280: * If it is empty or terminated by an escape sequence,
2281: * abort the `ds' request without defining anything.
1.10 schwarze 2282: */
1.7 schwarze 2283:
1.110 schwarze 2284: name = string = buf->buf + pos;
2285: if (*name == '\0')
1.149 schwarze 2286: return ROFF_IGN;
1.7 schwarze 2287:
1.85 schwarze 2288: namesz = roff_getname(r, &string, ln, pos);
1.110 schwarze 2289: if (name[namesz] == '\\')
1.149 schwarze 2290: return ROFF_IGN;
1.85 schwarze 2291:
2292: /* Read past the initial double-quote, if any. */
1.110 schwarze 2293: if (*string == '"')
1.7 schwarze 2294: string++;
2295:
1.10 schwarze 2296: /* The rest is the value. */
1.85 schwarze 2297: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2298: ROFF_as == tok);
1.183 schwarze 2299: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.149 schwarze 2300: return ROFF_IGN;
1.7 schwarze 2301: }
2302:
1.77 schwarze 2303: /*
2304: * Parse a single operator, one or two characters long.
2305: * If the operator is recognized, return success and advance the
2306: * parse point, else return failure and let the parse point unchanged.
2307: */
2308: static int
2309: roff_getop(const char *v, int *pos, char *res)
2310: {
2311:
2312: *res = v[*pos];
2313:
2314: switch (*res) {
1.80 schwarze 2315: case '+':
2316: case '-':
2317: case '*':
2318: case '/':
2319: case '%':
2320: case '&':
2321: case ':':
1.77 schwarze 2322: break;
2323: case '<':
2324: switch (v[*pos + 1]) {
1.80 schwarze 2325: case '=':
1.77 schwarze 2326: *res = 'l';
2327: (*pos)++;
2328: break;
1.80 schwarze 2329: case '>':
1.77 schwarze 2330: *res = '!';
2331: (*pos)++;
2332: break;
1.80 schwarze 2333: case '?':
1.77 schwarze 2334: *res = 'i';
2335: (*pos)++;
2336: break;
2337: default:
2338: break;
2339: }
2340: break;
2341: case '>':
2342: switch (v[*pos + 1]) {
1.80 schwarze 2343: case '=':
1.77 schwarze 2344: *res = 'g';
2345: (*pos)++;
2346: break;
1.80 schwarze 2347: case '?':
1.77 schwarze 2348: *res = 'a';
2349: (*pos)++;
2350: break;
2351: default:
2352: break;
2353: }
2354: break;
2355: case '=':
2356: if ('=' == v[*pos + 1])
2357: (*pos)++;
2358: break;
2359: default:
1.149 schwarze 2360: return 0;
1.77 schwarze 2361: }
2362: (*pos)++;
2363:
1.149 schwarze 2364: return *res;
1.77 schwarze 2365: }
2366:
2367: /*
2368: * Evaluate either a parenthesized numeric expression
2369: * or a single signed integer number.
2370: */
2371: static int
1.106 schwarze 2372: roff_evalpar(struct roff *r, int ln,
1.133 schwarze 2373: const char *v, int *pos, int *res, int flags)
1.77 schwarze 2374: {
2375:
2376: if ('(' != v[*pos])
1.149 schwarze 2377: return roff_getnum(v, pos, res, flags);
1.77 schwarze 2378:
2379: (*pos)++;
1.133 schwarze 2380: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.149 schwarze 2381: return 0;
1.77 schwarze 2382:
1.79 schwarze 2383: /*
2384: * Omission of the closing parenthesis
2385: * is an error in validation mode,
2386: * but ignored in evaluation mode.
2387: */
2388:
1.77 schwarze 2389: if (')' == v[*pos])
2390: (*pos)++;
1.79 schwarze 2391: else if (NULL == res)
1.149 schwarze 2392: return 0;
1.77 schwarze 2393:
1.149 schwarze 2394: return 1;
1.77 schwarze 2395: }
2396:
2397: /*
2398: * Evaluate a complete numeric expression.
2399: * Proceed left to right, there is no concept of precedence.
2400: */
2401: static int
1.106 schwarze 2402: roff_evalnum(struct roff *r, int ln, const char *v,
1.133 schwarze 2403: int *pos, int *res, int flags)
1.77 schwarze 2404: {
2405: int mypos, operand2;
2406: char operator;
2407:
2408: if (NULL == pos) {
2409: mypos = 0;
2410: pos = &mypos;
2411: }
2412:
1.133 schwarze 2413: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2414: while (isspace((unsigned char)v[*pos]))
2415: (*pos)++;
2416:
1.133 schwarze 2417: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.149 schwarze 2418: return 0;
1.77 schwarze 2419:
2420: while (1) {
1.133 schwarze 2421: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2422: while (isspace((unsigned char)v[*pos]))
2423: (*pos)++;
2424:
2425: if ( ! roff_getop(v, pos, &operator))
2426: break;
2427:
1.133 schwarze 2428: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2429: while (isspace((unsigned char)v[*pos]))
2430: (*pos)++;
2431:
1.133 schwarze 2432: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.149 schwarze 2433: return 0;
1.77 schwarze 2434:
1.133 schwarze 2435: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2436: while (isspace((unsigned char)v[*pos]))
2437: (*pos)++;
1.79 schwarze 2438:
2439: if (NULL == res)
2440: continue;
1.77 schwarze 2441:
2442: switch (operator) {
1.80 schwarze 2443: case '+':
1.77 schwarze 2444: *res += operand2;
2445: break;
1.80 schwarze 2446: case '-':
1.77 schwarze 2447: *res -= operand2;
2448: break;
1.80 schwarze 2449: case '*':
1.77 schwarze 2450: *res *= operand2;
2451: break;
1.80 schwarze 2452: case '/':
1.116 schwarze 2453: if (operand2 == 0) {
1.106 schwarze 2454: mandoc_msg(MANDOCERR_DIVZERO,
2455: r->parse, ln, *pos, v);
2456: *res = 0;
2457: break;
2458: }
1.77 schwarze 2459: *res /= operand2;
2460: break;
1.80 schwarze 2461: case '%':
1.116 schwarze 2462: if (operand2 == 0) {
2463: mandoc_msg(MANDOCERR_DIVZERO,
2464: r->parse, ln, *pos, v);
2465: *res = 0;
2466: break;
2467: }
1.77 schwarze 2468: *res %= operand2;
2469: break;
1.80 schwarze 2470: case '<':
1.77 schwarze 2471: *res = *res < operand2;
2472: break;
1.80 schwarze 2473: case '>':
1.77 schwarze 2474: *res = *res > operand2;
2475: break;
1.80 schwarze 2476: case 'l':
1.77 schwarze 2477: *res = *res <= operand2;
2478: break;
1.80 schwarze 2479: case 'g':
1.77 schwarze 2480: *res = *res >= operand2;
2481: break;
1.80 schwarze 2482: case '=':
1.77 schwarze 2483: *res = *res == operand2;
2484: break;
1.80 schwarze 2485: case '!':
1.77 schwarze 2486: *res = *res != operand2;
2487: break;
1.80 schwarze 2488: case '&':
1.77 schwarze 2489: *res = *res && operand2;
2490: break;
1.80 schwarze 2491: case ':':
1.77 schwarze 2492: *res = *res || operand2;
2493: break;
1.80 schwarze 2494: case 'i':
1.77 schwarze 2495: if (operand2 < *res)
2496: *res = operand2;
2497: break;
1.80 schwarze 2498: case 'a':
1.77 schwarze 2499: if (operand2 > *res)
2500: *res = operand2;
2501: break;
2502: default:
2503: abort();
2504: }
2505: }
1.149 schwarze 2506: return 1;
1.77 schwarze 2507: }
2508:
1.138 schwarze 2509: /* --- register management ------------------------------------------------ */
2510:
1.52 schwarze 2511: void
1.60 schwarze 2512: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.41 schwarze 2513: {
1.52 schwarze 2514: struct roffreg *reg;
2515:
2516: /* Search for an existing register with the same name. */
2517: reg = r->regtab;
2518:
2519: while (reg && strcmp(name, reg->key.p))
2520: reg = reg->next;
1.41 schwarze 2521:
1.52 schwarze 2522: if (NULL == reg) {
2523: /* Create a new register. */
2524: reg = mandoc_malloc(sizeof(struct roffreg));
2525: reg->key.p = mandoc_strdup(name);
2526: reg->key.sz = strlen(name);
1.60 schwarze 2527: reg->val = 0;
1.52 schwarze 2528: reg->next = r->regtab;
2529: r->regtab = reg;
2530: }
2531:
1.60 schwarze 2532: if ('+' == sign)
2533: reg->val += val;
2534: else if ('-' == sign)
2535: reg->val -= val;
2536: else
2537: reg->val = val;
1.41 schwarze 2538: }
2539:
1.65 schwarze 2540: /*
2541: * Handle some predefined read-only number registers.
2542: * For now, return -1 if the requested register is not predefined;
2543: * in case a predefined read-only register having the value -1
2544: * were to turn up, another special value would have to be chosen.
2545: */
2546: static int
1.145 schwarze 2547: roff_getregro(const struct roff *r, const char *name)
1.65 schwarze 2548: {
2549:
2550: switch (*name) {
1.145 schwarze 2551: case '$': /* Number of arguments of the last macro evaluated. */
1.149 schwarze 2552: return r->argc;
1.80 schwarze 2553: case 'A': /* ASCII approximation mode is always off. */
1.149 schwarze 2554: return 0;
1.80 schwarze 2555: case 'g': /* Groff compatibility mode is always on. */
1.149 schwarze 2556: return 1;
1.80 schwarze 2557: case 'H': /* Fixed horizontal resolution. */
1.149 schwarze 2558: return 24;
1.80 schwarze 2559: case 'j': /* Always adjust left margin only. */
1.149 schwarze 2560: return 0;
1.80 schwarze 2561: case 'T': /* Some output device is always defined. */
1.149 schwarze 2562: return 1;
1.80 schwarze 2563: case 'V': /* Fixed vertical resolution. */
1.149 schwarze 2564: return 40;
1.65 schwarze 2565: default:
1.149 schwarze 2566: return -1;
1.65 schwarze 2567: }
2568: }
2569:
1.53 schwarze 2570: int
1.52 schwarze 2571: roff_getreg(const struct roff *r, const char *name)
1.41 schwarze 2572: {
1.52 schwarze 2573: struct roffreg *reg;
1.65 schwarze 2574: int val;
2575:
2576: if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) {
1.145 schwarze 2577: val = roff_getregro(r, name + 1);
1.65 schwarze 2578: if (-1 != val)
1.149 schwarze 2579: return val;
1.65 schwarze 2580: }
1.52 schwarze 2581:
2582: for (reg = r->regtab; reg; reg = reg->next)
2583: if (0 == strcmp(name, reg->key.p))
1.149 schwarze 2584: return reg->val;
1.53 schwarze 2585:
1.149 schwarze 2586: return 0;
1.53 schwarze 2587: }
2588:
2589: static int
2590: roff_getregn(const struct roff *r, const char *name, size_t len)
2591: {
2592: struct roffreg *reg;
1.65 schwarze 2593: int val;
2594:
2595: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2596: val = roff_getregro(r, name + 1);
1.65 schwarze 2597: if (-1 != val)
1.149 schwarze 2598: return val;
1.65 schwarze 2599: }
1.53 schwarze 2600:
2601: for (reg = r->regtab; reg; reg = reg->next)
2602: if (len == reg->key.sz &&
2603: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 2604: return reg->val;
1.143 schwarze 2605:
1.149 schwarze 2606: return 0;
1.143 schwarze 2607: }
2608:
2609: static int
2610: roff_hasregn(const struct roff *r, const char *name, size_t len)
2611: {
2612: struct roffreg *reg;
2613: int val;
2614:
2615: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2616: val = roff_getregro(r, name + 1);
1.143 schwarze 2617: if (-1 != val)
1.149 schwarze 2618: return 1;
1.143 schwarze 2619: }
2620:
2621: for (reg = r->regtab; reg; reg = reg->next)
2622: if (len == reg->key.sz &&
2623: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 2624: return 1;
1.41 schwarze 2625:
1.149 schwarze 2626: return 0;
1.41 schwarze 2627: }
2628:
1.52 schwarze 2629: static void
2630: roff_freereg(struct roffreg *reg)
1.41 schwarze 2631: {
1.52 schwarze 2632: struct roffreg *old_reg;
1.41 schwarze 2633:
1.52 schwarze 2634: while (NULL != reg) {
2635: free(reg->key.p);
2636: old_reg = reg;
2637: reg = reg->next;
2638: free(old_reg);
2639: }
1.41 schwarze 2640: }
1.7 schwarze 2641:
2642: static enum rofferr
1.6 schwarze 2643: roff_nr(ROFF_ARGS)
1.1 schwarze 2644: {
1.85 schwarze 2645: char *key, *val;
2646: size_t keysz;
1.37 schwarze 2647: int iv;
1.60 schwarze 2648: char sign;
1.6 schwarze 2649:
1.110 schwarze 2650: key = val = buf->buf + pos;
2651: if (*key == '\0')
1.149 schwarze 2652: return ROFF_IGN;
1.85 schwarze 2653:
2654: keysz = roff_getname(r, &val, ln, pos);
1.110 schwarze 2655: if (key[keysz] == '\\')
1.149 schwarze 2656: return ROFF_IGN;
1.85 schwarze 2657: key[keysz] = '\0';
1.6 schwarze 2658:
1.60 schwarze 2659: sign = *val;
1.110 schwarze 2660: if (sign == '+' || sign == '-')
1.60 schwarze 2661: val++;
2662:
1.133 schwarze 2663: if (roff_evalnum(r, ln, val, NULL, &iv, ROFFNUM_SCALE))
1.77 schwarze 2664: roff_setreg(r, key, iv, sign);
1.1 schwarze 2665:
1.149 schwarze 2666: return ROFF_IGN;
1.76 schwarze 2667: }
2668:
2669: static enum rofferr
2670: roff_rr(ROFF_ARGS)
2671: {
2672: struct roffreg *reg, **prev;
1.85 schwarze 2673: char *name, *cp;
2674: size_t namesz;
1.76 schwarze 2675:
1.110 schwarze 2676: name = cp = buf->buf + pos;
2677: if (*name == '\0')
1.149 schwarze 2678: return ROFF_IGN;
1.85 schwarze 2679: namesz = roff_getname(r, &cp, ln, pos);
2680: name[namesz] = '\0';
1.76 schwarze 2681:
2682: prev = &r->regtab;
2683: while (1) {
2684: reg = *prev;
1.110 schwarze 2685: if (reg == NULL || !strcmp(name, reg->key.p))
1.76 schwarze 2686: break;
2687: prev = ®->next;
2688: }
1.110 schwarze 2689: if (reg != NULL) {
1.76 schwarze 2690: *prev = reg->next;
2691: free(reg->key.p);
2692: free(reg);
2693: }
1.149 schwarze 2694: return ROFF_IGN;
1.29 schwarze 2695: }
2696:
1.138 schwarze 2697: /* --- handler functions for roff requests -------------------------------- */
2698:
1.29 schwarze 2699: static enum rofferr
2700: roff_rm(ROFF_ARGS)
2701: {
2702: const char *name;
2703: char *cp;
1.85 schwarze 2704: size_t namesz;
1.29 schwarze 2705:
1.110 schwarze 2706: cp = buf->buf + pos;
2707: while (*cp != '\0') {
1.85 schwarze 2708: name = cp;
1.110 schwarze 2709: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.85 schwarze 2710: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.183 schwarze 2711: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.110 schwarze 2712: if (name[namesz] == '\\')
1.85 schwarze 2713: break;
1.29 schwarze 2714: }
1.149 schwarze 2715: return ROFF_IGN;
1.51 schwarze 2716: }
2717:
2718: static enum rofferr
2719: roff_it(ROFF_ARGS)
2720: {
2721: int iv;
2722:
2723: /* Parse the number of lines. */
1.133 schwarze 2724:
2725: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.95 schwarze 2726: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.110 schwarze 2727: ln, ppos, buf->buf + 1);
1.149 schwarze 2728: return ROFF_IGN;
1.51 schwarze 2729: }
2730:
1.134 schwarze 2731: while (isspace((unsigned char)buf->buf[pos]))
2732: pos++;
2733:
2734: /*
2735: * Arm the input line trap.
2736: * Special-casing "an-trap" is an ugly workaround to cope
2737: * with DocBook stupidly fiddling with man(7) internals.
2738: */
1.133 schwarze 2739:
1.51 schwarze 2740: roffit_lines = iv;
1.134 schwarze 2741: roffit_macro = mandoc_strdup(iv != 1 ||
2742: strcmp(buf->buf + pos, "an-trap") ?
2743: buf->buf + pos : "br");
1.149 schwarze 2744: return ROFF_IGN;
1.47 schwarze 2745: }
2746:
2747: static enum rofferr
2748: roff_Dd(ROFF_ARGS)
2749: {
1.187 schwarze 2750: int mask;
2751: enum roff_tok t, te;
1.99 schwarze 2752:
1.187 schwarze 2753: switch (tok) {
2754: case ROFF_Dd:
2755: tok = MDOC_Dd;
2756: te = MDOC_MAX;
2757: if (r->format == 0)
2758: r->format = MPARSE_MDOC;
2759: mask = MPARSE_MDOC | MPARSE_QUICK;
2760: break;
2761: case ROFF_TH:
2762: tok = MAN_TH;
2763: te = MAN_MAX;
2764: if (r->format == 0)
2765: r->format = MPARSE_MAN;
2766: mask = MPARSE_QUICK;
2767: break;
2768: default:
2769: abort();
2770: }
2771: if ((r->options & mask) == 0)
2772: for (t = tok; t < te; t++)
2773: roff_setstr(r, roff_name[t], NULL, 0);
1.149 schwarze 2774: return ROFF_CONT;
1.14 schwarze 2775: }
2776:
2777: static enum rofferr
1.27 schwarze 2778: roff_TE(ROFF_ARGS)
2779: {
1.193 ! schwarze 2780: if (r->tbl == NULL) {
1.94 schwarze 2781: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2782: ln, ppos, "TE");
1.193 ! schwarze 2783: return ROFF_IGN;
! 2784: }
! 2785: if (tbl_end(r->tbl) == 0) {
! 2786: r->tbl = NULL;
1.130 schwarze 2787: free(buf->buf);
2788: buf->buf = mandoc_strdup(".sp");
2789: buf->sz = 4;
1.149 schwarze 2790: return ROFF_REPARSE;
1.130 schwarze 2791: }
1.193 ! schwarze 2792: r->tbl = NULL;
1.149 schwarze 2793: return ROFF_IGN;
1.27 schwarze 2794: }
2795:
2796: static enum rofferr
2797: roff_T_(ROFF_ARGS)
2798: {
2799:
2800: if (NULL == r->tbl)
1.94 schwarze 2801: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2802: ln, ppos, "T&");
1.27 schwarze 2803: else
1.168 schwarze 2804: tbl_restart(ln, ppos, r->tbl);
1.27 schwarze 2805:
1.149 schwarze 2806: return ROFF_IGN;
1.27 schwarze 2807: }
2808:
1.102 schwarze 2809: /*
2810: * Handle in-line equation delimiters.
2811: */
2812: static enum rofferr
1.110 schwarze 2813: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.41 schwarze 2814: {
1.105 schwarze 2815: char *cp1, *cp2;
2816: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.41 schwarze 2817:
1.102 schwarze 2818: /*
2819: * Outside equations, look for an opening delimiter.
2820: * If we are inside an equation, we already know it is
2821: * in-line, or this function wouldn't have been called;
2822: * so look for a closing delimiter.
2823: */
2824:
1.110 schwarze 2825: cp1 = buf->buf + pos;
1.102 schwarze 2826: cp2 = strchr(cp1, r->eqn == NULL ?
2827: r->last_eqn->odelim : r->last_eqn->cdelim);
2828: if (cp2 == NULL)
1.149 schwarze 2829: return ROFF_CONT;
1.102 schwarze 2830:
1.105 schwarze 2831: *cp2++ = '\0';
2832: bef_pr = bef_nl = aft_nl = aft_pr = "";
2833:
2834: /* Handle preceding text, protecting whitespace. */
2835:
1.110 schwarze 2836: if (*buf->buf != '\0') {
1.105 schwarze 2837: if (r->eqn == NULL)
2838: bef_pr = "\\&";
2839: bef_nl = "\n";
2840: }
2841:
2842: /*
2843: * Prepare replacing the delimiter with an equation macro
2844: * and drop leading white space from the equation.
2845: */
1.102 schwarze 2846:
1.105 schwarze 2847: if (r->eqn == NULL) {
2848: while (*cp2 == ' ')
2849: cp2++;
2850: mac = ".EQ";
2851: } else
2852: mac = ".EN";
2853:
2854: /* Handle following text, protecting whitespace. */
2855:
2856: if (*cp2 != '\0') {
2857: aft_nl = "\n";
2858: if (r->eqn != NULL)
2859: aft_pr = "\\&";
2860: }
2861:
2862: /* Do the actual replacement. */
2863:
1.110 schwarze 2864: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.105 schwarze 2865: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.110 schwarze 2866: free(buf->buf);
2867: buf->buf = cp1;
1.102 schwarze 2868:
2869: /* Toggle the in-line state of the eqn subsystem. */
2870:
2871: r->eqn_inline = r->eqn == NULL;
1.149 schwarze 2872: return ROFF_REPARSE;
1.41 schwarze 2873: }
2874:
1.107 schwarze 2875: static enum rofferr
2876: roff_EQ(ROFF_ARGS)
1.32 schwarze 2877: {
1.191 schwarze 2878: struct roff_node *n;
2879:
2880: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
2881: if (ln > r->man->last->line)
2882: n->flags |= NODE_LINE;
2883: n->eqn = mandoc_calloc(1, sizeof(*n->eqn));
2884: n->eqn->expectargs = UINT_MAX;
2885: roff_node_append(r->man, n);
2886: r->man->next = ROFF_NEXT_SIBLING;
1.32 schwarze 2887:
1.110 schwarze 2888: assert(r->eqn == NULL);
1.191 schwarze 2889: if (r->last_eqn == NULL)
2890: r->last_eqn = eqn_alloc(r->parse);
2891: else
2892: eqn_reset(r->last_eqn);
2893: r->eqn = r->last_eqn;
2894: r->eqn->node = n;
1.41 schwarze 2895:
1.110 schwarze 2896: if (buf->buf[pos] != '\0')
1.107 schwarze 2897: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 2898: ".EQ %s", buf->buf + pos);
1.41 schwarze 2899:
1.149 schwarze 2900: return ROFF_IGN;
1.32 schwarze 2901: }
2902:
2903: static enum rofferr
2904: roff_EN(ROFF_ARGS)
2905: {
1.191 schwarze 2906: if (r->eqn != NULL) {
2907: eqn_parse(r->eqn);
2908: r->eqn = NULL;
2909: } else
2910: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
2911: if (buf->buf[pos] != '\0')
2912: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
2913: "EN %s", buf->buf + pos);
1.149 schwarze 2914: return ROFF_IGN;
1.32 schwarze 2915: }
2916:
2917: static enum rofferr
1.27 schwarze 2918: roff_TS(ROFF_ARGS)
2919: {
1.193 ! schwarze 2920: if (r->tbl != NULL) {
1.94 schwarze 2921: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
2922: ln, ppos, "TS breaks TS");
1.193 ! schwarze 2923: tbl_end(r->tbl);
1.27 schwarze 2924: }
1.193 ! schwarze 2925: r->tbl = tbl_alloc(ppos, ln, r->parse);
1.27 schwarze 2926: if (r->last_tbl)
1.193 ! schwarze 2927: r->last_tbl->next = r->tbl;
1.27 schwarze 2928: else
1.193 ! schwarze 2929: r->first_tbl = r->tbl;
! 2930: r->last_tbl = r->tbl;
1.169 schwarze 2931: return ROFF_IGN;
2932: }
2933:
2934: static enum rofferr
2935: roff_onearg(ROFF_ARGS)
2936: {
2937: struct roff_node *n;
2938: char *cp;
1.177 schwarze 2939: int npos;
1.169 schwarze 2940:
1.174 schwarze 2941: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.192 schwarze 2942: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
2943: tok == ROFF_ti))
1.174 schwarze 2944: man_breakscope(r->man, tok);
2945:
1.181 schwarze 2946: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.177 schwarze 2947: r->man->last = roffce_node;
2948: r->man->next = ROFF_NEXT_SIBLING;
2949: }
2950:
1.169 schwarze 2951: roff_elem_alloc(r->man, ln, ppos, tok);
2952: n = r->man->last;
2953:
2954: cp = buf->buf + pos;
2955: if (*cp != '\0') {
2956: while (*cp != '\0' && *cp != ' ')
2957: cp++;
2958: while (*cp == ' ')
2959: *cp++ = '\0';
2960: if (*cp != '\0')
2961: mandoc_vmsg(MANDOCERR_ARG_EXCESS,
2962: r->parse, ln, cp - buf->buf,
2963: "%s ... %s", roff_name[tok], cp);
2964: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.172 schwarze 2965: }
2966:
1.181 schwarze 2967: if (tok == ROFF_ce || tok == ROFF_rj) {
2968: if (r->man->last->type == ROFFT_ELEM) {
1.177 schwarze 2969: roff_word_alloc(r->man, ln, pos, "1");
2970: r->man->last->flags |= NODE_NOSRC;
2971: }
2972: npos = 0;
2973: if (roff_evalnum(r, ln, r->man->last->string, &npos,
2974: &roffce_lines, 0) == 0) {
2975: mandoc_vmsg(MANDOCERR_CE_NONUM,
2976: r->parse, ln, pos, "ce %s", buf->buf + pos);
2977: roffce_lines = 1;
2978: }
2979: if (roffce_lines < 1) {
2980: r->man->last = r->man->last->parent;
2981: roffce_node = NULL;
2982: roffce_lines = 0;
2983: } else
2984: roffce_node = r->man->last->parent;
2985: } else {
2986: n->flags |= NODE_VALID | NODE_ENDED;
2987: r->man->last = n;
2988: }
2989: n->flags |= NODE_LINE;
1.172 schwarze 2990: r->man->next = ROFF_NEXT_SIBLING;
2991: return ROFF_IGN;
2992: }
2993:
2994: static enum rofferr
2995: roff_manyarg(ROFF_ARGS)
2996: {
2997: struct roff_node *n;
2998: char *sp, *ep;
2999:
3000: roff_elem_alloc(r->man, ln, ppos, tok);
3001: n = r->man->last;
3002:
3003: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3004: while (*ep != '\0' && *ep != ' ')
3005: ep++;
3006: while (*ep == ' ')
3007: *ep++ = '\0';
3008: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.169 schwarze 3009: }
3010:
3011: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3012: r->man->last = n;
3013: r->man->next = ROFF_NEXT_SIBLING;
1.149 schwarze 3014: return ROFF_IGN;
1.123 schwarze 3015: }
3016:
3017: static enum rofferr
1.183 schwarze 3018: roff_als(ROFF_ARGS)
3019: {
3020: char *oldn, *newn, *end, *value;
3021: size_t oldsz, newsz, valsz;
3022:
3023: newn = oldn = buf->buf + pos;
3024: if (*newn == '\0')
3025: return ROFF_IGN;
3026:
3027: newsz = roff_getname(r, &oldn, ln, pos);
3028: if (newn[newsz] == '\\' || *oldn == '\0')
3029: return ROFF_IGN;
3030:
3031: end = oldn;
3032: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3033: if (oldsz == 0)
3034: return ROFF_IGN;
3035:
1.187 schwarze 3036: valsz = mandoc_asprintf(&value, ".%.*s \\$*\\\"\n",
3037: (int)oldsz, oldn);
1.183 schwarze 3038: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3039: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3040: free(value);
3041: return ROFF_IGN;
3042: }
3043:
3044: static enum rofferr
1.168 schwarze 3045: roff_br(ROFF_ARGS)
1.123 schwarze 3046: {
1.174 schwarze 3047: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3048: man_breakscope(r->man, ROFF_br);
1.168 schwarze 3049: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
3050: if (buf->buf[pos] != '\0')
3051: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
3052: "%s %s", roff_name[tok], buf->buf + pos);
3053: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3054: r->man->next = ROFF_NEXT_SIBLING;
3055: return ROFF_IGN;
1.27 schwarze 3056: }
3057:
3058: static enum rofferr
1.48 schwarze 3059: roff_cc(ROFF_ARGS)
3060: {
3061: const char *p;
3062:
1.110 schwarze 3063: p = buf->buf + pos;
1.48 schwarze 3064:
1.110 schwarze 3065: if (*p == '\0' || (r->control = *p++) == '.')
1.175 schwarze 3066: r->control = '\0';
1.48 schwarze 3067:
1.110 schwarze 3068: if (*p != '\0')
1.132 schwarze 3069: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3070: ln, p - buf->buf, "cc ... %s", p);
1.48 schwarze 3071:
1.149 schwarze 3072: return ROFF_IGN;
1.48 schwarze 3073: }
3074:
3075: static enum rofferr
1.175 schwarze 3076: roff_ec(ROFF_ARGS)
3077: {
3078: const char *p;
3079:
3080: p = buf->buf + pos;
3081: if (*p == '\0')
3082: r->escape = '\\';
3083: else {
3084: r->escape = *p;
3085: if (*++p != '\0')
3086: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3087: ln, p - buf->buf, "ec ... %s", p);
3088: }
3089: return ROFF_IGN;
3090: }
3091:
3092: static enum rofferr
3093: roff_eo(ROFF_ARGS)
3094: {
3095: r->escape = '\0';
3096: if (buf->buf[pos] != '\0')
3097: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse,
3098: ln, pos, "eo %s", buf->buf + pos);
3099: return ROFF_IGN;
3100: }
3101:
3102: static enum rofferr
1.42 schwarze 3103: roff_tr(ROFF_ARGS)
3104: {
3105: const char *p, *first, *second;
3106: size_t fsz, ssz;
3107: enum mandoc_esc esc;
3108:
1.110 schwarze 3109: p = buf->buf + pos;
1.42 schwarze 3110:
1.110 schwarze 3111: if (*p == '\0') {
1.132 schwarze 3112: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.149 schwarze 3113: return ROFF_IGN;
1.42 schwarze 3114: }
3115:
1.110 schwarze 3116: while (*p != '\0') {
1.42 schwarze 3117: fsz = ssz = 1;
3118:
3119: first = p++;
1.110 schwarze 3120: if (*first == '\\') {
1.42 schwarze 3121: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3122: if (esc == ESCAPE_ERROR) {
1.92 schwarze 3123: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 3124: ln, (int)(p - buf->buf), first);
1.149 schwarze 3125: return ROFF_IGN;
1.42 schwarze 3126: }
3127: fsz = (size_t)(p - first);
3128: }
3129:
3130: second = p++;
1.110 schwarze 3131: if (*second == '\\') {
1.42 schwarze 3132: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3133: if (esc == ESCAPE_ERROR) {
1.92 schwarze 3134: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 3135: ln, (int)(p - buf->buf), second);
1.149 schwarze 3136: return ROFF_IGN;
1.42 schwarze 3137: }
3138: ssz = (size_t)(p - second);
1.110 schwarze 3139: } else if (*second == '\0') {
1.132 schwarze 3140: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
3141: ln, first - buf->buf, "tr %s", first);
1.42 schwarze 3142: second = " ";
3143: p--;
3144: }
3145:
3146: if (fsz > 1) {
1.80 schwarze 3147: roff_setstrn(&r->xmbtab, first, fsz,
3148: second, ssz, 0);
1.42 schwarze 3149: continue;
3150: }
3151:
1.110 schwarze 3152: if (r->xtab == NULL)
1.80 schwarze 3153: r->xtab = mandoc_calloc(128,
3154: sizeof(struct roffstr));
1.42 schwarze 3155:
3156: free(r->xtab[(int)*first].p);
3157: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3158: r->xtab[(int)*first].sz = ssz;
3159: }
3160:
1.149 schwarze 3161: return ROFF_IGN;
1.42 schwarze 3162: }
3163:
3164: static enum rofferr
1.178 schwarze 3165: roff_rn(ROFF_ARGS)
3166: {
3167: const char *value;
3168: char *oldn, *newn, *end;
3169: size_t oldsz, newsz;
1.187 schwarze 3170: int deftype;
1.178 schwarze 3171:
3172: oldn = newn = buf->buf + pos;
3173: if (*oldn == '\0')
3174: return ROFF_IGN;
3175:
3176: oldsz = roff_getname(r, &newn, ln, pos);
3177: if (oldn[oldsz] == '\\' || *newn == '\0')
3178: return ROFF_IGN;
3179:
3180: end = newn;
3181: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3182: if (newsz == 0)
3183: return ROFF_IGN;
3184:
1.187 schwarze 3185: deftype = ROFFDEF_ANY;
3186: value = roff_getstrn(r, oldn, oldsz, &deftype);
3187: switch (deftype) {
3188: case ROFFDEF_USER:
1.178 schwarze 3189: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3190: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3191: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.187 schwarze 3192: break;
3193: case ROFFDEF_PRE:
3194: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3195: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3196: break;
3197: case ROFFDEF_REN:
1.178 schwarze 3198: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3199: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.187 schwarze 3200: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3201: break;
3202: case ROFFDEF_STD:
1.178 schwarze 3203: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.187 schwarze 3204: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3205: break;
3206: default:
3207: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3208: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3209: break;
3210: }
1.178 schwarze 3211: return ROFF_IGN;
3212: }
3213:
3214: static enum rofferr
1.14 schwarze 3215: roff_so(ROFF_ARGS)
3216: {
1.121 schwarze 3217: char *name, *cp;
1.15 schwarze 3218:
1.110 schwarze 3219: name = buf->buf + pos;
1.97 schwarze 3220: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.14 schwarze 3221:
1.22 schwarze 3222: /*
3223: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3224: * opening anything that's not in our cwd or anything beneath
3225: * it. Thus, explicitly disallow traversing up the file-system
3226: * or using absolute paths.
3227: */
3228:
1.110 schwarze 3229: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.83 schwarze 3230: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
3231: ".so %s", name);
1.121 schwarze 3232: buf->sz = mandoc_asprintf(&cp,
3233: ".sp\nSee the file %s.\n.sp", name) + 1;
3234: free(buf->buf);
3235: buf->buf = cp;
3236: *offs = 0;
1.149 schwarze 3237: return ROFF_REPARSE;
1.14 schwarze 3238: }
3239:
3240: *offs = pos;
1.149 schwarze 3241: return ROFF_SO;
1.7 schwarze 3242: }
3243:
1.138 schwarze 3244: /* --- user defined strings and macros ------------------------------------ */
3245:
1.16 schwarze 3246: static enum rofferr
3247: roff_userdef(ROFF_ARGS)
1.12 schwarze 3248: {
1.183 schwarze 3249: const char *arg[16], *ap;
1.16 schwarze 3250: char *cp, *n1, *n2;
1.164 schwarze 3251: int expand_count, i, ib, ie;
1.135 schwarze 3252: size_t asz, rsz;
1.12 schwarze 3253:
1.16 schwarze 3254: /*
3255: * Collect pointers to macro argument strings
1.61 schwarze 3256: * and NUL-terminate them.
1.16 schwarze 3257: */
1.135 schwarze 3258:
1.145 schwarze 3259: r->argc = 0;
1.110 schwarze 3260: cp = buf->buf + pos;
1.183 schwarze 3261: for (i = 0; i < 16; i++) {
1.145 schwarze 3262: if (*cp == '\0')
3263: arg[i] = "";
3264: else {
3265: arg[i] = mandoc_getarg(r->parse, &cp, ln, &pos);
3266: r->argc = i + 1;
3267: }
3268: }
1.16 schwarze 3269:
3270: /*
3271: * Expand macro arguments.
1.12 schwarze 3272: */
1.135 schwarze 3273:
3274: buf->sz = strlen(r->current_string) + 1;
1.164 schwarze 3275: n1 = n2 = cp = mandoc_malloc(buf->sz);
1.135 schwarze 3276: memcpy(n1, r->current_string, buf->sz);
1.164 schwarze 3277: expand_count = 0;
1.135 schwarze 3278: while (*cp != '\0') {
3279:
3280: /* Scan ahead for the next argument invocation. */
3281:
3282: if (*cp++ != '\\')
3283: continue;
3284: if (*cp++ != '$')
3285: continue;
1.146 schwarze 3286: if (*cp == '*') { /* \\$* inserts all arguments */
3287: ib = 0;
3288: ie = r->argc - 1;
3289: } else { /* \\$1 .. \\$9 insert one argument */
3290: ib = ie = *cp - '1';
3291: if (ib < 0 || ib > 8)
3292: continue;
3293: }
1.135 schwarze 3294: cp -= 2;
1.164 schwarze 3295:
3296: /*
3297: * Prevent infinite recursion.
3298: */
3299:
3300: if (cp >= n2)
3301: expand_count = 1;
3302: else if (++expand_count > EXPAND_LIMIT) {
3303: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
3304: ln, (int)(cp - n1), NULL);
1.165 schwarze 3305: free(buf->buf);
3306: buf->buf = n1;
1.164 schwarze 3307: return ROFF_IGN;
3308: }
1.135 schwarze 3309:
3310: /*
3311: * Determine the size of the expanded argument,
3312: * taking escaping of quotes into account.
3313: */
3314:
1.146 schwarze 3315: asz = ie > ib ? ie - ib : 0; /* for blanks */
3316: for (i = ib; i <= ie; i++) {
3317: for (ap = arg[i]; *ap != '\0'; ap++) {
3318: asz++;
3319: if (*ap == '"')
3320: asz += 3;
3321: }
1.135 schwarze 3322: }
3323: if (asz != 3) {
3324:
3325: /*
3326: * Determine the size of the rest of the
3327: * unexpanded macro, including the NUL.
3328: */
3329:
3330: rsz = buf->sz - (cp - n1) - 3;
3331:
3332: /*
3333: * When shrinking, move before
3334: * releasing the storage.
3335: */
3336:
3337: if (asz < 3)
3338: memmove(cp + asz, cp + 3, rsz);
3339:
3340: /*
3341: * Resize the storage for the macro
3342: * and readjust the parse pointer.
3343: */
3344:
3345: buf->sz += asz - 3;
3346: n2 = mandoc_realloc(n1, buf->sz);
3347: cp = n2 + (cp - n1);
3348: n1 = n2;
3349:
3350: /*
3351: * When growing, make room
3352: * for the expanded argument.
3353: */
3354:
3355: if (asz > 3)
3356: memmove(cp + asz, cp + 3, rsz);
3357: }
3358:
3359: /* Copy the expanded argument, escaping quotes. */
3360:
3361: n2 = cp;
1.146 schwarze 3362: for (i = ib; i <= ie; i++) {
3363: for (ap = arg[i]; *ap != '\0'; ap++) {
3364: if (*ap == '"') {
3365: memcpy(n2, "\\(dq", 4);
3366: n2 += 4;
3367: } else
3368: *n2++ = *ap;
3369: }
3370: if (i < ie)
3371: *n2++ = ' ';
1.16 schwarze 3372: }
1.12 schwarze 3373: }
3374:
1.16 schwarze 3375: /*
3376: * Replace the macro invocation
3377: * by the expanded macro.
3378: */
1.135 schwarze 3379:
1.110 schwarze 3380: free(buf->buf);
3381: buf->buf = n1;
1.120 schwarze 3382: *offs = 0;
1.16 schwarze 3383:
1.149 schwarze 3384: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
3385: ROFF_REPARSE : ROFF_APPEND;
1.12 schwarze 3386: }
1.28 schwarze 3387:
1.178 schwarze 3388: /*
3389: * Calling a high-level macro that was renamed with .rn.
3390: * r->current_string has already been set up by roff_parse().
3391: */
3392: static enum rofferr
3393: roff_renamed(ROFF_ARGS)
3394: {
3395: char *nbuf;
3396:
1.187 schwarze 3397: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
3398: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.178 schwarze 3399: free(buf->buf);
3400: buf->buf = nbuf;
3401: return ROFF_CONT;
3402: }
3403:
1.85 schwarze 3404: static size_t
1.28 schwarze 3405: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3406: {
3407: char *name, *cp;
1.85 schwarze 3408: size_t namesz;
1.28 schwarze 3409:
3410: name = *cpp;
3411: if ('\0' == *name)
1.149 schwarze 3412: return 0;
1.28 schwarze 3413:
1.85 schwarze 3414: /* Read until end of name and terminate it with NUL. */
3415: for (cp = name; 1; cp++) {
3416: if ('\0' == *cp || ' ' == *cp) {
3417: namesz = cp - name;
3418: break;
3419: }
1.28 schwarze 3420: if ('\\' != *cp)
3421: continue;
1.88 schwarze 3422: namesz = cp - name;
3423: if ('{' == cp[1] || '}' == cp[1])
3424: break;
1.28 schwarze 3425: cp++;
3426: if ('\\' == *cp)
3427: continue;
1.97 schwarze 3428: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3429: "%.*s", (int)(cp - name + 1), name);
1.85 schwarze 3430: mandoc_escape((const char **)&cp, NULL, NULL);
3431: break;
1.28 schwarze 3432: }
3433:
3434: /* Read past spaces. */
3435: while (' ' == *cp)
3436: cp++;
3437:
3438: *cpp = cp;
1.149 schwarze 3439: return namesz;
1.28 schwarze 3440: }
3441:
1.16 schwarze 3442: /*
3443: * Store *string into the user-defined string called *name.
3444: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.66 schwarze 3445: * append == 0: replace mode
3446: * append == 1: single-line append mode
3447: * append == 2: multiline append mode, append '\n' after each call
1.16 schwarze 3448: */
1.8 schwarze 3449: static void
1.16 schwarze 3450: roff_setstr(struct roff *r, const char *name, const char *string,
1.66 schwarze 3451: int append)
1.7 schwarze 3452: {
1.187 schwarze 3453: size_t namesz;
1.42 schwarze 3454:
1.187 schwarze 3455: namesz = strlen(name);
3456: roff_setstrn(&r->strtab, name, namesz, string,
1.80 schwarze 3457: string ? strlen(string) : 0, append);
1.187 schwarze 3458: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.42 schwarze 3459: }
3460:
3461: static void
3462: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.66 schwarze 3463: const char *string, size_t stringsz, int append)
1.42 schwarze 3464: {
3465: struct roffkv *n;
3466: char *c;
3467: int i;
3468: size_t oldch, newch;
1.7 schwarze 3469:
1.16 schwarze 3470: /* Search for an existing string with the same name. */
1.42 schwarze 3471: n = *r;
3472:
1.84 schwarze 3473: while (n && (namesz != n->key.sz ||
3474: strncmp(n->key.p, name, namesz)))
1.7 schwarze 3475: n = n->next;
1.8 schwarze 3476:
3477: if (NULL == n) {
1.16 schwarze 3478: /* Create a new string table entry. */
1.42 schwarze 3479: n = mandoc_malloc(sizeof(struct roffkv));
3480: n->key.p = mandoc_strndup(name, namesz);
3481: n->key.sz = namesz;
3482: n->val.p = NULL;
3483: n->val.sz = 0;
3484: n->next = *r;
3485: *r = n;
1.66 schwarze 3486: } else if (0 == append) {
1.42 schwarze 3487: free(n->val.p);
3488: n->val.p = NULL;
3489: n->val.sz = 0;
1.16 schwarze 3490: }
3491:
3492: if (NULL == string)
3493: return;
3494:
3495: /*
3496: * One additional byte for the '\n' in multiline mode,
3497: * and one for the terminating '\0'.
3498: */
1.66 schwarze 3499: newch = stringsz + (1 < append ? 2u : 1u);
1.42 schwarze 3500:
3501: if (NULL == n->val.p) {
3502: n->val.p = mandoc_malloc(newch);
3503: *n->val.p = '\0';
1.16 schwarze 3504: oldch = 0;
3505: } else {
1.42 schwarze 3506: oldch = n->val.sz;
3507: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.16 schwarze 3508: }
3509:
3510: /* Skip existing content in the destination buffer. */
1.42 schwarze 3511: c = n->val.p + (int)oldch;
1.16 schwarze 3512:
3513: /* Append new content to the destination buffer. */
1.42 schwarze 3514: i = 0;
3515: while (i < (int)stringsz) {
1.16 schwarze 3516: /*
3517: * Rudimentary roff copy mode:
3518: * Handle escaped backslashes.
3519: */
1.42 schwarze 3520: if ('\\' == string[i] && '\\' == string[i + 1])
3521: i++;
3522: *c++ = string[i++];
1.16 schwarze 3523: }
1.8 schwarze 3524:
1.16 schwarze 3525: /* Append terminating bytes. */
1.66 schwarze 3526: if (1 < append)
1.16 schwarze 3527: *c++ = '\n';
1.42 schwarze 3528:
1.16 schwarze 3529: *c = '\0';
1.42 schwarze 3530: n->val.sz = (int)(c - n->val.p);
1.7 schwarze 3531: }
3532:
1.8 schwarze 3533: static const char *
1.187 schwarze 3534: roff_getstrn(const struct roff *r, const char *name, size_t len,
3535: int *deftype)
1.7 schwarze 3536: {
1.187 schwarze 3537: const struct roffkv *n;
3538: int i;
3539: enum roff_tok tok;
3540:
3541: if (*deftype & ROFFDEF_USER) {
3542: for (n = r->strtab; n != NULL; n = n->next) {
3543: if (strncmp(name, n->key.p, len) == 0 &&
3544: n->key.p[len] == '\0' &&
3545: n->val.p != NULL) {
3546: *deftype = ROFFDEF_USER;
3547: return n->val.p;
3548: }
3549: }
3550: }
3551: if (*deftype & ROFFDEF_PRE) {
3552: for (i = 0; i < PREDEFS_MAX; i++) {
3553: if (strncmp(name, predefs[i].name, len) == 0 &&
3554: predefs[i].name[len] == '\0') {
3555: *deftype = ROFFDEF_PRE;
3556: return predefs[i].str;
3557: }
3558: }
3559: }
3560: if (*deftype & ROFFDEF_REN) {
3561: for (n = r->rentab; n != NULL; n = n->next) {
3562: if (strncmp(name, n->key.p, len) == 0 &&
3563: n->key.p[len] == '\0' &&
3564: n->val.p != NULL) {
3565: *deftype = ROFFDEF_REN;
3566: return n->val.p;
3567: }
3568: }
3569: }
3570: if (*deftype & ROFFDEF_STD) {
3571: if (r->man->macroset != MACROSET_MAN) {
3572: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
3573: if (strncmp(name, roff_name[tok], len) == 0 &&
3574: roff_name[tok][len] == '\0') {
3575: *deftype = ROFFDEF_STD;
3576: return NULL;
3577: }
3578: }
3579: }
3580: if (r->man->macroset != MACROSET_MDOC) {
3581: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
3582: if (strncmp(name, roff_name[tok], len) == 0 &&
3583: roff_name[tok][len] == '\0') {
3584: *deftype = ROFFDEF_STD;
3585: return NULL;
3586: }
3587: }
3588: }
3589: }
3590: *deftype = 0;
1.149 schwarze 3591: return NULL;
1.7 schwarze 3592: }
3593:
1.8 schwarze 3594: static void
1.42 schwarze 3595: roff_freestr(struct roffkv *r)
1.7 schwarze 3596: {
1.42 schwarze 3597: struct roffkv *n, *nn;
1.7 schwarze 3598:
1.42 schwarze 3599: for (n = r; n; n = nn) {
3600: free(n->key.p);
3601: free(n->val.p);
1.7 schwarze 3602: nn = n->next;
3603: free(n);
3604: }
1.27 schwarze 3605: }
1.138 schwarze 3606:
3607: /* --- accessors and utility functions ------------------------------------ */
1.42 schwarze 3608:
3609: /*
3610: * Duplicate an input string, making the appropriate character
3611: * conversations (as stipulated by `tr') along the way.
3612: * Returns a heap-allocated string with all the replacements made.
3613: */
3614: char *
3615: roff_strdup(const struct roff *r, const char *p)
3616: {
3617: const struct roffkv *cp;
3618: char *res;
3619: const char *pp;
3620: size_t ssz, sz;
3621: enum mandoc_esc esc;
3622:
3623: if (NULL == r->xmbtab && NULL == r->xtab)
1.149 schwarze 3624: return mandoc_strdup(p);
1.42 schwarze 3625: else if ('\0' == *p)
1.149 schwarze 3626: return mandoc_strdup("");
1.42 schwarze 3627:
3628: /*
3629: * Step through each character looking for term matches
3630: * (remember that a `tr' can be invoked with an escape, which is
3631: * a glyph but the escape is multi-character).
3632: * We only do this if the character hash has been initialised
3633: * and the string is >0 length.
3634: */
3635:
3636: res = NULL;
3637: ssz = 0;
3638:
3639: while ('\0' != *p) {
1.161 schwarze 3640: assert((unsigned int)*p < 128);
3641: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.42 schwarze 3642: sz = r->xtab[(int)*p].sz;
3643: res = mandoc_realloc(res, ssz + sz + 1);
3644: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3645: ssz += sz;
3646: p++;
3647: continue;
3648: } else if ('\\' != *p) {
3649: res = mandoc_realloc(res, ssz + 2);
3650: res[ssz++] = *p++;
3651: continue;
3652: }
3653:
3654: /* Search for term matches. */
3655: for (cp = r->xmbtab; cp; cp = cp->next)
3656: if (0 == strncmp(p, cp->key.p, cp->key.sz))
3657: break;
3658:
3659: if (NULL != cp) {
3660: /*
3661: * A match has been found.
3662: * Append the match to the array and move
3663: * forward by its keysize.
3664: */
1.80 schwarze 3665: res = mandoc_realloc(res,
3666: ssz + cp->val.sz + 1);
1.42 schwarze 3667: memcpy(res + ssz, cp->val.p, cp->val.sz);
3668: ssz += cp->val.sz;
3669: p += (int)cp->key.sz;
3670: continue;
3671: }
3672:
3673: /*
3674: * Handle escapes carefully: we need to copy
3675: * over just the escape itself, or else we might
3676: * do replacements within the escape itself.
3677: * Make sure to pass along the bogus string.
3678: */
3679: pp = p++;
3680: esc = mandoc_escape(&p, NULL, NULL);
3681: if (ESCAPE_ERROR == esc) {
3682: sz = strlen(pp);
3683: res = mandoc_realloc(res, ssz + sz + 1);
3684: memcpy(res + ssz, pp, sz);
3685: break;
3686: }
1.80 schwarze 3687: /*
3688: * We bail out on bad escapes.
1.42 schwarze 3689: * No need to warn: we already did so when
3690: * roff_res() was called.
3691: */
3692: sz = (int)(p - pp);
3693: res = mandoc_realloc(res, ssz + sz + 1);
3694: memcpy(res + ssz, pp, sz);
3695: ssz += sz;
3696: }
3697:
3698: res[(int)ssz] = '\0';
1.149 schwarze 3699: return res;
1.99 schwarze 3700: }
3701:
3702: int
3703: roff_getformat(const struct roff *r)
3704: {
3705:
1.149 schwarze 3706: return r->format;
1.48 schwarze 3707: }
3708:
3709: /*
1.80 schwarze 3710: * Find out whether a line is a macro line or not.
1.48 schwarze 3711: * If it is, adjust the current position and return one; if it isn't,
3712: * return zero and don't change the current position.
3713: * If the control character has been set with `.cc', then let that grain
3714: * precedence.
3715: * This is slighly contrary to groff, where using the non-breaking
3716: * control character when `cc' has been invoked will cause the
3717: * non-breaking macro contents to be printed verbatim.
3718: */
3719: int
3720: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
3721: {
3722: int pos;
3723:
3724: pos = *ppos;
3725:
1.175 schwarze 3726: if (r->control != '\0' && cp[pos] == r->control)
1.48 schwarze 3727: pos++;
1.175 schwarze 3728: else if (r->control != '\0')
1.149 schwarze 3729: return 0;
1.48 schwarze 3730: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
3731: pos += 2;
3732: else if ('.' == cp[pos] || '\'' == cp[pos])
3733: pos++;
3734: else
1.149 schwarze 3735: return 0;
1.48 schwarze 3736:
3737: while (' ' == cp[pos] || '\t' == cp[pos])
3738: pos++;
3739:
3740: *ppos = pos;
1.149 schwarze 3741: return 1;
1.1 schwarze 3742: }
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