Annotation of src/usr.bin/mandoc/roff.c, Revision 1.200
1.200 ! schwarze 1: /* $OpenBSD: roff.c,v 1.199 2018/04/10 00:52:21 schwarze Exp $ */
1.1 schwarze 2: /*
1.139 schwarze 3: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.197 schwarze 4: * Copyright (c) 2010-2015, 2017, 2018 Ingo Schwarze <schwarze@openbsd.org>
1.1 schwarze 5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
1.16 schwarze 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.1 schwarze 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.16 schwarze 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.1 schwarze 13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
1.99 schwarze 18: #include <sys/types.h>
19:
1.1 schwarze 20: #include <assert.h>
1.3 schwarze 21: #include <ctype.h>
1.117 schwarze 22: #include <limits.h>
1.167 schwarze 23: #include <stddef.h>
24: #include <stdint.h>
1.51 schwarze 25: #include <stdio.h>
1.1 schwarze 26: #include <stdlib.h>
27: #include <string.h>
28:
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)
1.197 schwarze 47: #define ROFFDEF_UNDEF (1 << 5) /* Completely undefined. */
1.187 schwarze 48:
1.138 schwarze 49: /* --- data types --------------------------------------------------------- */
50:
1.41 schwarze 51: /*
1.42 schwarze 52: * An incredibly-simple string buffer.
53: */
1.8 schwarze 54: struct roffstr {
1.42 schwarze 55: char *p; /* nil-terminated buffer */
56: size_t sz; /* saved strlen(p) */
57: };
58:
59: /*
60: * A key-value roffstr pair as part of a singly-linked list.
61: */
62: struct roffkv {
63: struct roffstr key;
64: struct roffstr val;
65: struct roffkv *next; /* next in list */
1.8 schwarze 66: };
67:
1.52 schwarze 68: /*
69: * A single number register as part of a singly-linked list.
70: */
71: struct roffreg {
72: struct roffstr key;
1.53 schwarze 73: int val;
1.199 schwarze 74: int step;
1.52 schwarze 75: struct roffreg *next;
76: };
77:
1.167 schwarze 78: /*
79: * Association of request and macro names with token IDs.
80: */
81: struct roffreq {
82: enum roff_tok tok;
83: char name[];
84: };
85:
1.1 schwarze 86: struct roff {
1.35 schwarze 87: struct mparse *parse; /* parse point */
1.168 schwarze 88: struct roff_man *man; /* mdoc or man parser */
1.1 schwarze 89: struct roffnode *last; /* leaf of stack */
1.96 schwarze 90: int *rstack; /* stack of inverted `ie' values */
1.167 schwarze 91: struct ohash *reqtab; /* request lookup table */
1.52 schwarze 92: struct roffreg *regtab; /* number registers */
1.42 schwarze 93: struct roffkv *strtab; /* user-defined strings & macros */
1.178 schwarze 94: struct roffkv *rentab; /* renamed strings & macros */
1.42 schwarze 95: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
96: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.16 schwarze 97: const char *current_string; /* value of last called user macro */
1.27 schwarze 98: struct tbl_node *first_tbl; /* first table parsed */
99: struct tbl_node *last_tbl; /* last table parsed */
100: struct tbl_node *tbl; /* current table being parsed */
1.191 schwarze 101: struct eqn_node *last_eqn; /* equation parser */
102: struct eqn_node *eqn; /* active equation parser */
1.102 schwarze 103: int eqn_inline; /* current equation is inline */
1.96 schwarze 104: int options; /* parse options */
105: int rstacksz; /* current size limit of rstack */
106: int rstackpos; /* position in rstack */
1.99 schwarze 107: int format; /* current file in mdoc or man format */
1.145 schwarze 108: int argc; /* number of args of the last macro */
1.96 schwarze 109: char control; /* control character */
1.175 schwarze 110: char escape; /* escape character */
1.1 schwarze 111: };
112:
113: struct roffnode {
1.166 schwarze 114: enum roff_tok tok; /* type of node */
1.1 schwarze 115: struct roffnode *parent; /* up one in stack */
116: int line; /* parse line */
117: int col; /* parse col */
1.16 schwarze 118: char *name; /* node name, e.g. macro name */
1.2 schwarze 119: char *end; /* end-rules: custom token */
120: int endspan; /* end-rules: next-line or infty */
1.71 schwarze 121: int rule; /* current evaluation rule */
1.1 schwarze 122: };
123:
124: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.166 schwarze 125: enum roff_tok tok, /* tok of macro */ \
1.110 schwarze 126: struct buf *buf, /* input buffer */ \
1.1 schwarze 127: int ln, /* parse line */ \
1.2 schwarze 128: int ppos, /* original pos in buffer */ \
129: int pos, /* current pos in buffer */ \
130: int *offs /* reset offset of buffer data */
1.1 schwarze 131:
132: typedef enum rofferr (*roffproc)(ROFF_ARGS);
133:
134: struct roffmac {
1.2 schwarze 135: roffproc proc; /* process new macro */
136: roffproc text; /* process as child text of macro */
137: roffproc sub; /* process as child of macro */
138: int flags;
139: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.1 schwarze 140: };
141:
1.37 schwarze 142: struct predef {
143: const char *name; /* predefined input name */
144: const char *str; /* replacement symbol */
145: };
146:
147: #define PREDEF(__name, __str) \
148: { (__name), (__str) },
149:
1.138 schwarze 150: /* --- function prototypes ------------------------------------------------ */
151:
1.42 schwarze 152: static void roffnode_cleanscope(struct roff *);
153: static void roffnode_pop(struct roff *);
1.166 schwarze 154: static void roffnode_push(struct roff *, enum roff_tok,
1.42 schwarze 155: const char *, int, int);
1.193 schwarze 156: static void roff_addtbl(struct roff_man *, struct tbl_node *);
1.183 schwarze 157: static enum rofferr roff_als(ROFF_ARGS);
1.2 schwarze 158: static enum rofferr roff_block(ROFF_ARGS);
159: static enum rofferr roff_block_text(ROFF_ARGS);
160: static enum rofferr roff_block_sub(ROFF_ARGS);
1.168 schwarze 161: static enum rofferr roff_br(ROFF_ARGS);
1.2 schwarze 162: static enum rofferr roff_cblock(ROFF_ARGS);
1.48 schwarze 163: static enum rofferr roff_cc(ROFF_ARGS);
1.68 schwarze 164: static void roff_ccond(struct roff *, int, int);
1.2 schwarze 165: static enum rofferr roff_cond(ROFF_ARGS);
166: static enum rofferr roff_cond_text(ROFF_ARGS);
167: static enum rofferr roff_cond_sub(ROFF_ARGS);
1.7 schwarze 168: static enum rofferr roff_ds(ROFF_ARGS);
1.175 schwarze 169: static enum rofferr roff_ec(ROFF_ARGS);
170: static enum rofferr roff_eo(ROFF_ARGS);
1.110 schwarze 171: static enum rofferr roff_eqndelim(struct roff *, struct buf *, int);
1.143 schwarze 172: static int roff_evalcond(struct roff *r, int, char *, int *);
1.106 schwarze 173: static int roff_evalnum(struct roff *, int,
174: const char *, int *, int *, int);
175: static int roff_evalpar(struct roff *, int,
1.133 schwarze 176: const char *, int *, int *, int);
1.71 schwarze 177: static int roff_evalstrcond(const char *, int *);
1.42 schwarze 178: static void roff_free1(struct roff *);
1.52 schwarze 179: static void roff_freereg(struct roffreg *);
1.42 schwarze 180: static void roff_freestr(struct roffkv *);
1.85 schwarze 181: static size_t roff_getname(struct roff *, char **, int, int);
1.133 schwarze 182: static int roff_getnum(const char *, int *, int *, int);
1.56 schwarze 183: static int roff_getop(const char *, int *, char *);
1.199 schwarze 184: static int roff_getregn(struct roff *,
185: const char *, size_t, char);
1.145 schwarze 186: static int roff_getregro(const struct roff *,
187: const char *name);
1.197 schwarze 188: static const char *roff_getstrn(struct roff *,
1.187 schwarze 189: const char *, size_t, int *);
1.143 schwarze 190: static int roff_hasregn(const struct roff *,
191: const char *, size_t);
1.123 schwarze 192: static enum rofferr roff_insec(ROFF_ARGS);
1.51 schwarze 193: static enum rofferr roff_it(ROFF_ARGS);
1.21 schwarze 194: static enum rofferr roff_line_ignore(ROFF_ARGS);
1.137 schwarze 195: static void roff_man_alloc1(struct roff_man *);
196: static void roff_man_free1(struct roff_man *);
1.172 schwarze 197: static enum rofferr roff_manyarg(ROFF_ARGS);
1.6 schwarze 198: static enum rofferr roff_nr(ROFF_ARGS);
1.169 schwarze 199: static enum rofferr roff_onearg(ROFF_ARGS);
1.166 schwarze 200: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.87 schwarze 201: int, int);
1.177 schwarze 202: static enum rofferr roff_parsetext(struct roff *, struct buf *,
203: int, int *);
1.178 schwarze 204: static enum rofferr roff_renamed(ROFF_ARGS);
1.110 schwarze 205: static enum rofferr roff_res(struct roff *, struct buf *, int, int);
1.29 schwarze 206: static enum rofferr roff_rm(ROFF_ARGS);
1.178 schwarze 207: static enum rofferr roff_rn(ROFF_ARGS);
1.76 schwarze 208: static enum rofferr roff_rr(ROFF_ARGS);
1.198 schwarze 209: static void roff_setregn(struct roff *, const char *,
1.199 schwarze 210: size_t, int, char, int);
1.8 schwarze 211: static void roff_setstr(struct roff *,
1.16 schwarze 212: const char *, const char *, int);
1.80 schwarze 213: static void roff_setstrn(struct roffkv **, const char *,
1.42 schwarze 214: size_t, const char *, size_t, int);
1.14 schwarze 215: static enum rofferr roff_so(ROFF_ARGS);
1.42 schwarze 216: static enum rofferr roff_tr(ROFF_ARGS);
1.47 schwarze 217: static enum rofferr roff_Dd(ROFF_ARGS);
1.27 schwarze 218: static enum rofferr roff_TE(ROFF_ARGS);
219: static enum rofferr roff_TS(ROFF_ARGS);
1.32 schwarze 220: static enum rofferr roff_EQ(ROFF_ARGS);
221: static enum rofferr roff_EN(ROFF_ARGS);
1.27 schwarze 222: static enum rofferr roff_T_(ROFF_ARGS);
1.123 schwarze 223: static enum rofferr roff_unsupp(ROFF_ARGS);
1.16 schwarze 224: static enum rofferr roff_userdef(ROFF_ARGS);
1.1 schwarze 225:
1.138 schwarze 226: /* --- constant data ------------------------------------------------------ */
227:
1.133 schwarze 228: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
229: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
230:
1.166 schwarze 231: const char *__roff_name[MAN_MAX + 1] = {
1.177 schwarze 232: "br", "ce", "ft", "ll",
1.184 schwarze 233: "mc", "po", "rj", "sp",
234: "ta", "ti", NULL,
1.166 schwarze 235: "ab", "ad", "af", "aln",
236: "als", "am", "am1", "ami",
237: "ami1", "as", "as1", "asciify",
238: "backtrace", "bd", "bleedat", "blm",
239: "box", "boxa", "bp", "BP",
240: "break", "breakchar", "brnl", "brp",
1.177 schwarze 241: "brpnl", "c2", "cc",
1.166 schwarze 242: "cf", "cflags", "ch", "char",
243: "chop", "class", "close", "CL",
244: "color", "composite", "continue", "cp",
245: "cropat", "cs", "cu", "da",
246: "dch", "Dd", "de", "de1",
247: "defcolor", "dei", "dei1", "device",
248: "devicem", "di", "do", "ds",
249: "ds1", "dwh", "dt", "ec",
250: "ecr", "ecs", "el", "em",
251: "EN", "eo", "EP", "EQ",
252: "errprint", "ev", "evc", "ex",
253: "fallback", "fam", "fc", "fchar",
254: "fcolor", "fdeferlig", "feature", "fkern",
255: "fl", "flig", "fp", "fps",
256: "fschar", "fspacewidth", "fspecial", "ftr",
257: "fzoom", "gcolor", "hc", "hcode",
258: "hidechar", "hla", "hlm", "hpf",
259: "hpfa", "hpfcode", "hw", "hy",
260: "hylang", "hylen", "hym", "hypp",
261: "hys", "ie", "if", "ig",
262: "index", "it", "itc", "IX",
263: "kern", "kernafter", "kernbefore", "kernpair",
264: "lc", "lc_ctype", "lds", "length",
265: "letadj", "lf", "lg", "lhang",
266: "linetabs", "lnr", "lnrf", "lpfx",
1.176 schwarze 267: "ls", "lsm", "lt",
1.166 schwarze 268: "mediasize", "minss", "mk", "mso",
269: "na", "ne", "nh", "nhychar",
270: "nm", "nn", "nop", "nr",
271: "nrf", "nroff", "ns", "nx",
272: "open", "opena", "os", "output",
273: "padj", "papersize", "pc", "pev",
274: "pi", "PI", "pl", "pm",
1.184 schwarze 275: "pn", "pnr", "ps",
1.166 schwarze 276: "psbb", "pshape", "pso", "ptr",
277: "pvs", "rchar", "rd", "recursionlimit",
1.181 schwarze 278: "return", "rfschar", "rhang",
1.166 schwarze 279: "rm", "rn", "rnn", "rr",
280: "rs", "rt", "schar", "sentchar",
281: "shc", "shift", "sizes", "so",
282: "spacewidth", "special", "spreadwarn", "ss",
283: "sty", "substring", "sv", "sy",
1.172 schwarze 284: "T&", "tc", "TE",
1.173 schwarze 285: "TH", "tkf", "tl",
1.166 schwarze 286: "tm", "tm1", "tmc", "tr",
287: "track", "transchar", "trf", "trimat",
288: "trin", "trnt", "troff", "TS",
289: "uf", "ul", "unformat", "unwatch",
290: "unwatchn", "vpt", "vs", "warn",
291: "warnscale", "watch", "watchlength", "watchn",
292: "wh", "while", "write", "writec",
293: "writem", "xflag", ".", NULL,
1.178 schwarze 294: NULL, "text",
1.166 schwarze 295: "Dd", "Dt", "Os", "Sh",
296: "Ss", "Pp", "D1", "Dl",
297: "Bd", "Ed", "Bl", "El",
298: "It", "Ad", "An", "Ap",
299: "Ar", "Cd", "Cm", "Dv",
300: "Er", "Ev", "Ex", "Fa",
301: "Fd", "Fl", "Fn", "Ft",
302: "Ic", "In", "Li", "Nd",
303: "Nm", "Op", "Ot", "Pa",
304: "Rv", "St", "Va", "Vt",
305: "Xr", "%A", "%B", "%D",
306: "%I", "%J", "%N", "%O",
307: "%P", "%R", "%T", "%V",
308: "Ac", "Ao", "Aq", "At",
309: "Bc", "Bf", "Bo", "Bq",
310: "Bsx", "Bx", "Db", "Dc",
311: "Do", "Dq", "Ec", "Ef",
312: "Em", "Eo", "Fx", "Ms",
313: "No", "Ns", "Nx", "Ox",
314: "Pc", "Pf", "Po", "Pq",
315: "Qc", "Ql", "Qo", "Qq",
316: "Re", "Rs", "Sc", "So",
317: "Sq", "Sm", "Sx", "Sy",
318: "Tn", "Ux", "Xc", "Xo",
319: "Fo", "Fc", "Oo", "Oc",
320: "Bk", "Ek", "Bt", "Hf",
321: "Fr", "Ud", "Lb", "Lp",
322: "Lk", "Mt", "Brq", "Bro",
323: "Brc", "%C", "Es", "En",
1.171 schwarze 324: "Dx", "%Q", "%U", "Ta",
325: NULL,
1.166 schwarze 326: "TH", "SH", "SS", "TP",
327: "LP", "PP", "P", "IP",
328: "HP", "SM", "SB", "BI",
329: "IB", "BR", "RB", "R",
330: "B", "I", "IR", "RI",
1.171 schwarze 331: "nf", "fi",
1.166 schwarze 332: "RE", "RS", "DT", "UC",
1.169 schwarze 333: "PD", "AT", "in",
1.166 schwarze 334: "OP", "EX", "EE", "UR",
1.189 bentley 335: "UE", "MT", "ME", NULL
1.166 schwarze 336: };
337: const char *const *roff_name = __roff_name;
338:
339: static struct roffmac roffs[TOKEN_NONE] = {
1.168 schwarze 340: { roff_br, NULL, NULL, 0 }, /* br */
1.177 schwarze 341: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.169 schwarze 342: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.170 schwarze 343: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.176 schwarze 344: { roff_onearg, NULL, NULL, 0 }, /* mc */
1.184 schwarze 345: { roff_onearg, NULL, NULL, 0 }, /* po */
1.181 schwarze 346: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.171 schwarze 347: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.172 schwarze 348: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.173 schwarze 349: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.168 schwarze 350: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.167 schwarze 351: { roff_unsupp, NULL, NULL, 0 }, /* ab */
352: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
353: { roff_line_ignore, NULL, NULL, 0 }, /* af */
354: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.183 schwarze 355: { roff_als, NULL, NULL, 0 }, /* als */
1.167 schwarze 356: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
357: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
358: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
359: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
360: { roff_ds, NULL, NULL, 0 }, /* as */
361: { roff_ds, NULL, NULL, 0 }, /* as1 */
362: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
363: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
364: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
365: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
366: { roff_unsupp, NULL, NULL, 0 }, /* blm */
367: { roff_unsupp, NULL, NULL, 0 }, /* box */
368: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
369: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
370: { roff_unsupp, NULL, NULL, 0 }, /* BP */
371: { roff_unsupp, NULL, NULL, 0 }, /* break */
372: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
373: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.168 schwarze 374: { roff_br, NULL, NULL, 0 }, /* brp */
1.167 schwarze 375: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
376: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
377: { roff_cc, NULL, NULL, 0 }, /* cc */
378: { roff_insec, NULL, NULL, 0 }, /* cf */
379: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
380: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
381: { roff_unsupp, NULL, NULL, 0 }, /* char */
382: { roff_unsupp, NULL, NULL, 0 }, /* chop */
383: { roff_line_ignore, NULL, NULL, 0 }, /* class */
384: { roff_insec, NULL, NULL, 0 }, /* close */
385: { roff_unsupp, NULL, NULL, 0 }, /* CL */
386: { roff_line_ignore, NULL, NULL, 0 }, /* color */
387: { roff_unsupp, NULL, NULL, 0 }, /* composite */
388: { roff_unsupp, NULL, NULL, 0 }, /* continue */
389: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
390: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
391: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
392: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
393: { roff_unsupp, NULL, NULL, 0 }, /* da */
394: { roff_unsupp, NULL, NULL, 0 }, /* dch */
395: { roff_Dd, NULL, NULL, 0 }, /* Dd */
396: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
397: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
398: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
399: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
400: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
401: { roff_unsupp, NULL, NULL, 0 }, /* device */
402: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
403: { roff_unsupp, NULL, NULL, 0 }, /* di */
404: { roff_unsupp, NULL, NULL, 0 }, /* do */
405: { roff_ds, NULL, NULL, 0 }, /* ds */
406: { roff_ds, NULL, NULL, 0 }, /* ds1 */
407: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
408: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.175 schwarze 409: { roff_ec, NULL, NULL, 0 }, /* ec */
1.167 schwarze 410: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
411: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
412: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
413: { roff_unsupp, NULL, NULL, 0 }, /* em */
414: { roff_EN, NULL, NULL, 0 }, /* EN */
1.175 schwarze 415: { roff_eo, NULL, NULL, 0 }, /* eo */
1.167 schwarze 416: { roff_unsupp, NULL, NULL, 0 }, /* EP */
417: { roff_EQ, NULL, NULL, 0 }, /* EQ */
418: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
419: { roff_unsupp, NULL, NULL, 0 }, /* ev */
420: { roff_unsupp, NULL, NULL, 0 }, /* evc */
421: { roff_unsupp, NULL, NULL, 0 }, /* ex */
422: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
423: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
424: { roff_unsupp, NULL, NULL, 0 }, /* fc */
425: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
426: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
427: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
428: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
429: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
430: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
431: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
432: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
433: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
434: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
435: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
436: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
437: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
438: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
439: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
440: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
441: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
442: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
443: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
444: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
445: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
446: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
447: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
448: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
449: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
450: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
451: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
452: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
453: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
454: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
455: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
456: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
457: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
458: { roff_unsupp, NULL, NULL, 0 }, /* index */
459: { roff_it, NULL, NULL, 0 }, /* it */
460: { roff_unsupp, NULL, NULL, 0 }, /* itc */
461: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
462: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
463: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
464: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
465: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
466: { roff_unsupp, NULL, NULL, 0 }, /* lc */
467: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
468: { roff_unsupp, NULL, NULL, 0 }, /* lds */
469: { roff_unsupp, NULL, NULL, 0 }, /* length */
470: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
471: { roff_insec, NULL, NULL, 0 }, /* lf */
472: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
473: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
474: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
475: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
476: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
477: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
478: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
479: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
480: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
481: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
482: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
483: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
484: { roff_insec, NULL, NULL, 0 }, /* mso */
485: { roff_line_ignore, NULL, NULL, 0 }, /* na */
486: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
487: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
488: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
489: { roff_unsupp, NULL, NULL, 0 }, /* nm */
490: { roff_unsupp, NULL, NULL, 0 }, /* nn */
491: { roff_unsupp, NULL, NULL, 0 }, /* nop */
492: { roff_nr, NULL, NULL, 0 }, /* nr */
493: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
494: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
495: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
496: { roff_insec, NULL, NULL, 0 }, /* nx */
497: { roff_insec, NULL, NULL, 0 }, /* open */
498: { roff_insec, NULL, NULL, 0 }, /* opena */
499: { roff_line_ignore, NULL, NULL, 0 }, /* os */
500: { roff_unsupp, NULL, NULL, 0 }, /* output */
501: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
502: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
503: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
504: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
505: { roff_insec, NULL, NULL, 0 }, /* pi */
506: { roff_unsupp, NULL, NULL, 0 }, /* PI */
507: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
508: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
509: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
510: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
511: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
512: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
513: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
514: { roff_insec, NULL, NULL, 0 }, /* pso */
515: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
516: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
517: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
518: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
519: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
520: { roff_unsupp, NULL, NULL, 0 }, /* return */
521: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
522: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
523: { roff_rm, NULL, NULL, 0 }, /* rm */
1.178 schwarze 524: { roff_rn, NULL, NULL, 0 }, /* rn */
1.167 schwarze 525: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
526: { roff_rr, NULL, NULL, 0 }, /* rr */
527: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
528: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
529: { roff_unsupp, NULL, NULL, 0 }, /* schar */
530: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
531: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
532: { roff_unsupp, NULL, NULL, 0 }, /* shift */
533: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
534: { roff_so, NULL, NULL, 0 }, /* so */
535: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
536: { roff_line_ignore, NULL, NULL, 0 }, /* special */
537: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
538: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
539: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
540: { roff_unsupp, NULL, NULL, 0 }, /* substring */
541: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
542: { roff_insec, NULL, NULL, 0 }, /* sy */
543: { roff_T_, NULL, NULL, 0 }, /* T& */
544: { roff_unsupp, NULL, NULL, 0 }, /* tc */
545: { roff_TE, NULL, NULL, 0 }, /* TE */
1.187 schwarze 546: { roff_Dd, NULL, NULL, 0 }, /* TH */
1.167 schwarze 547: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
548: { roff_unsupp, NULL, NULL, 0 }, /* tl */
549: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
550: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
551: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
552: { roff_tr, NULL, NULL, 0 }, /* tr */
553: { roff_line_ignore, NULL, NULL, 0 }, /* track */
554: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
555: { roff_insec, NULL, NULL, 0 }, /* trf */
556: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
557: { roff_unsupp, NULL, NULL, 0 }, /* trin */
558: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
559: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
560: { roff_TS, NULL, NULL, 0 }, /* TS */
561: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
562: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
563: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
564: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
565: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
566: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
567: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
568: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
569: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
570: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
571: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
572: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
573: { roff_unsupp, NULL, NULL, 0 }, /* wh */
574: { roff_unsupp, NULL, NULL, 0 }, /* while */
575: { roff_insec, NULL, NULL, 0 }, /* write */
576: { roff_insec, NULL, NULL, 0 }, /* writec */
577: { roff_insec, NULL, NULL, 0 }, /* writem */
578: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
579: { roff_cblock, NULL, NULL, 0 }, /* . */
1.178 schwarze 580: { roff_renamed, NULL, NULL, 0 },
1.167 schwarze 581: { roff_userdef, NULL, NULL, 0 }
1.1 schwarze 582: };
583:
1.37 schwarze 584: /* Array of injected predefined strings. */
585: #define PREDEFS_MAX 38
586: static const struct predef predefs[PREDEFS_MAX] = {
587: #include "predefs.in"
588: };
589:
1.177 schwarze 590: static int roffce_lines; /* number of input lines to center */
591: static struct roff_node *roffce_node; /* active request */
1.51 schwarze 592: static int roffit_lines; /* number of lines to delay */
593: static char *roffit_macro; /* nil-terminated macro line */
594:
1.80 schwarze 595:
1.138 schwarze 596: /* --- request table ------------------------------------------------------ */
597:
1.167 schwarze 598: struct ohash *
599: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.3 schwarze 600: {
1.167 schwarze 601: struct ohash *htab;
602: struct roffreq *req;
603: enum roff_tok tok;
604: size_t sz;
605: unsigned int slot;
1.3 schwarze 606:
1.167 schwarze 607: htab = mandoc_malloc(sizeof(*htab));
608: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.3 schwarze 609:
1.167 schwarze 610: for (tok = mintok; tok < maxtok; tok++) {
1.168 schwarze 611: if (roff_name[tok] == NULL)
612: continue;
1.167 schwarze 613: sz = strlen(roff_name[tok]);
614: req = mandoc_malloc(sizeof(*req) + sz + 1);
615: req->tok = tok;
616: memcpy(req->name, roff_name[tok], sz + 1);
617: slot = ohash_qlookup(htab, req->name);
618: ohash_insert(htab, slot, req);
1.3 schwarze 619: }
1.167 schwarze 620: return htab;
1.3 schwarze 621: }
622:
1.167 schwarze 623: void
624: roffhash_free(struct ohash *htab)
1.1 schwarze 625: {
1.167 schwarze 626: struct roffreq *req;
627: unsigned int slot;
1.1 schwarze 628:
1.167 schwarze 629: if (htab == NULL)
630: return;
631: for (req = ohash_first(htab, &slot); req != NULL;
632: req = ohash_next(htab, &slot))
633: free(req);
634: ohash_delete(htab);
635: free(htab);
636: }
637:
638: enum roff_tok
639: roffhash_find(struct ohash *htab, const char *name, size_t sz)
640: {
641: struct roffreq *req;
642: const char *end;
643:
644: if (sz) {
645: end = name + sz;
646: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
647: } else
648: req = ohash_find(htab, ohash_qlookup(htab, name));
649: return req == NULL ? TOKEN_NONE : req->tok;
1.1 schwarze 650: }
651:
1.138 schwarze 652: /* --- stack of request blocks -------------------------------------------- */
653:
1.1 schwarze 654: /*
655: * Pop the current node off of the stack of roff instructions currently
656: * pending.
657: */
658: static void
659: roffnode_pop(struct roff *r)
660: {
661: struct roffnode *p;
662:
1.2 schwarze 663: assert(r->last);
1.80 schwarze 664: p = r->last;
1.2 schwarze 665:
666: r->last = r->last->parent;
1.16 schwarze 667: free(p->name);
668: free(p->end);
1.1 schwarze 669: free(p);
670: }
671:
672: /*
673: * Push a roff node onto the instruction stack. This must later be
674: * removed with roffnode_pop().
675: */
1.11 schwarze 676: static void
1.166 schwarze 677: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.16 schwarze 678: int line, int col)
1.1 schwarze 679: {
680: struct roffnode *p;
681:
1.11 schwarze 682: p = mandoc_calloc(1, sizeof(struct roffnode));
1.1 schwarze 683: p->tok = tok;
1.16 schwarze 684: if (name)
685: p->name = mandoc_strdup(name);
1.1 schwarze 686: p->parent = r->last;
687: p->line = line;
688: p->col = col;
1.71 schwarze 689: p->rule = p->parent ? p->parent->rule : 0;
1.1 schwarze 690:
691: r->last = p;
692: }
693:
1.138 schwarze 694: /* --- roff parser state data management ---------------------------------- */
695:
1.1 schwarze 696: static void
697: roff_free1(struct roff *r)
698: {
1.49 schwarze 699: struct tbl_node *tbl;
1.42 schwarze 700: int i;
1.27 schwarze 701:
1.49 schwarze 702: while (NULL != (tbl = r->first_tbl)) {
703: r->first_tbl = tbl->next;
704: tbl_free(tbl);
1.27 schwarze 705: }
706: r->first_tbl = r->last_tbl = r->tbl = NULL;
1.1 schwarze 707:
1.191 schwarze 708: if (r->last_eqn != NULL)
709: eqn_free(r->last_eqn);
710: r->last_eqn = r->eqn = NULL;
1.32 schwarze 711:
1.1 schwarze 712: while (r->last)
713: roffnode_pop(r);
1.27 schwarze 714:
1.96 schwarze 715: free (r->rstack);
716: r->rstack = NULL;
717: r->rstacksz = 0;
718: r->rstackpos = -1;
719:
720: roff_freereg(r->regtab);
721: r->regtab = NULL;
722:
1.42 schwarze 723: roff_freestr(r->strtab);
1.178 schwarze 724: roff_freestr(r->rentab);
1.42 schwarze 725: roff_freestr(r->xmbtab);
1.178 schwarze 726: r->strtab = r->rentab = r->xmbtab = NULL;
1.42 schwarze 727:
728: if (r->xtab)
729: for (i = 0; i < 128; i++)
730: free(r->xtab[i].p);
731: free(r->xtab);
732: r->xtab = NULL;
1.1 schwarze 733: }
734:
735: void
736: roff_reset(struct roff *r)
737: {
738: roff_free1(r);
1.99 schwarze 739: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.175 schwarze 740: r->control = '\0';
741: r->escape = '\\';
1.179 schwarze 742: roffce_lines = 0;
743: roffce_node = NULL;
744: roffit_lines = 0;
745: roffit_macro = NULL;
1.1 schwarze 746: }
747:
748: void
749: roff_free(struct roff *r)
750: {
751: roff_free1(r);
1.167 schwarze 752: roffhash_free(r->reqtab);
1.1 schwarze 753: free(r);
754: }
755:
756: struct roff *
1.151 schwarze 757: roff_alloc(struct mparse *parse, int options)
1.1 schwarze 758: {
759: struct roff *r;
760:
1.11 schwarze 761: r = mandoc_calloc(1, sizeof(struct roff));
1.35 schwarze 762: r->parse = parse;
1.200 ! schwarze 763: r->reqtab = roffhash_alloc(0, ROFF_RENAMED);
1.72 schwarze 764: r->options = options;
1.99 schwarze 765: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.2 schwarze 766: r->rstackpos = -1;
1.175 schwarze 767: r->escape = '\\';
1.149 schwarze 768: return r;
1.137 schwarze 769: }
770:
1.138 schwarze 771: /* --- syntax tree state data management ---------------------------------- */
772:
1.137 schwarze 773: static void
774: roff_man_free1(struct roff_man *man)
775: {
776:
1.138 schwarze 777: if (man->first != NULL)
778: roff_node_delete(man, man->first);
1.137 schwarze 779: free(man->meta.msec);
780: free(man->meta.vol);
781: free(man->meta.os);
782: free(man->meta.arch);
783: free(man->meta.title);
784: free(man->meta.name);
785: free(man->meta.date);
786: }
787:
788: static void
789: roff_man_alloc1(struct roff_man *man)
790: {
791:
792: memset(&man->meta, 0, sizeof(man->meta));
793: man->first = mandoc_calloc(1, sizeof(*man->first));
794: man->first->type = ROFFT_ROOT;
795: man->last = man->first;
796: man->last_es = NULL;
797: man->flags = 0;
798: man->macroset = MACROSET_NONE;
799: man->lastsec = man->lastnamed = SEC_NONE;
800: man->next = ROFF_NEXT_CHILD;
801: }
802:
803: void
804: roff_man_reset(struct roff_man *man)
805: {
806:
807: roff_man_free1(man);
808: roff_man_alloc1(man);
809: }
810:
811: void
812: roff_man_free(struct roff_man *man)
813: {
814:
815: roff_man_free1(man);
816: free(man);
817: }
818:
819: struct roff_man *
820: roff_man_alloc(struct roff *roff, struct mparse *parse,
1.188 schwarze 821: const char *os_s, int quick)
1.137 schwarze 822: {
823: struct roff_man *man;
824:
825: man = mandoc_calloc(1, sizeof(*man));
826: man->parse = parse;
827: man->roff = roff;
1.188 schwarze 828: man->os_s = os_s;
1.137 schwarze 829: man->quick = quick;
830: roff_man_alloc1(man);
1.168 schwarze 831: roff->man = man;
1.149 schwarze 832: return man;
1.1 schwarze 833: }
834:
1.138 schwarze 835: /* --- syntax tree handling ----------------------------------------------- */
836:
837: struct roff_node *
838: roff_node_alloc(struct roff_man *man, int line, int pos,
839: enum roff_type type, int tok)
840: {
841: struct roff_node *n;
842:
843: n = mandoc_calloc(1, sizeof(*n));
844: n->line = line;
845: n->pos = pos;
846: n->tok = tok;
847: n->type = type;
848: n->sec = man->lastsec;
849:
850: if (man->flags & MDOC_SYNOPSIS)
1.157 schwarze 851: n->flags |= NODE_SYNPRETTY;
1.138 schwarze 852: else
1.157 schwarze 853: n->flags &= ~NODE_SYNPRETTY;
1.138 schwarze 854: if (man->flags & MDOC_NEWLINE)
1.157 schwarze 855: n->flags |= NODE_LINE;
1.138 schwarze 856: man->flags &= ~MDOC_NEWLINE;
857:
1.149 schwarze 858: return n;
1.138 schwarze 859: }
860:
861: void
862: roff_node_append(struct roff_man *man, struct roff_node *n)
863: {
864:
865: switch (man->next) {
866: case ROFF_NEXT_SIBLING:
1.153 schwarze 867: if (man->last->next != NULL) {
868: n->next = man->last->next;
869: man->last->next->prev = n;
870: } else
871: man->last->parent->last = n;
1.138 schwarze 872: man->last->next = n;
873: n->prev = man->last;
874: n->parent = man->last->parent;
875: break;
876: case ROFF_NEXT_CHILD:
1.159 schwarze 877: if (man->last->child != NULL) {
878: n->next = man->last->child;
879: man->last->child->prev = n;
880: } else
881: man->last->last = n;
1.138 schwarze 882: man->last->child = n;
883: n->parent = man->last;
884: break;
885: default:
886: abort();
887: }
1.154 schwarze 888: man->last = n;
1.138 schwarze 889:
890: switch (n->type) {
891: case ROFFT_HEAD:
892: n->parent->head = n;
893: break;
894: case ROFFT_BODY:
1.154 schwarze 895: if (n->end != ENDBODY_NOT)
896: return;
1.138 schwarze 897: n->parent->body = n;
898: break;
899: case ROFFT_TAIL:
900: n->parent->tail = n;
901: break;
902: default:
1.154 schwarze 903: return;
1.138 schwarze 904: }
1.154 schwarze 905:
906: /*
907: * Copy over the normalised-data pointer of our parent. Not
908: * everybody has one, but copying a null pointer is fine.
909: */
910:
911: n->norm = n->parent->norm;
912: assert(n->parent->type == ROFFT_BLOCK);
1.138 schwarze 913: }
914:
1.139 schwarze 915: void
916: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
917: {
918: struct roff_node *n;
919:
920: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
921: n->string = roff_strdup(man->roff, word);
922: roff_node_append(man, n);
1.158 schwarze 923: n->flags |= NODE_VALID | NODE_ENDED;
1.139 schwarze 924: man->next = ROFF_NEXT_SIBLING;
925: }
926:
927: void
928: roff_word_append(struct roff_man *man, const char *word)
929: {
930: struct roff_node *n;
931: char *addstr, *newstr;
932:
933: n = man->last;
934: addstr = roff_strdup(man->roff, word);
935: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
936: free(addstr);
937: free(n->string);
938: n->string = newstr;
939: man->next = ROFF_NEXT_SIBLING;
1.140 schwarze 940: }
941:
942: void
943: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
944: {
945: struct roff_node *n;
946:
947: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
948: roff_node_append(man, n);
949: man->next = ROFF_NEXT_CHILD;
950: }
951:
952: struct roff_node *
953: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
954: {
955: struct roff_node *n;
956:
957: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
958: roff_node_append(man, n);
959: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 960: return n;
1.139 schwarze 961: }
962:
1.138 schwarze 963: struct roff_node *
964: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
965: {
966: struct roff_node *n;
967:
968: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
969: roff_node_append(man, n);
970: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 971: return n;
1.138 schwarze 972: }
973:
974: struct roff_node *
975: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
976: {
977: struct roff_node *n;
978:
979: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
980: roff_node_append(man, n);
981: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 982: return n;
1.139 schwarze 983: }
984:
1.193 schwarze 985: static void
986: roff_addtbl(struct roff_man *man, struct tbl_node *tbl)
1.139 schwarze 987: {
988: struct roff_node *n;
1.193 schwarze 989: const struct tbl_span *span;
1.139 schwarze 990:
991: if (man->macroset == MACROSET_MAN)
1.174 schwarze 992: man_breakscope(man, ROFF_TS);
1.193 schwarze 993: while ((span = tbl_span(tbl)) != NULL) {
994: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
995: n->span = span;
996: roff_node_append(man, n);
997: n->flags |= NODE_VALID | NODE_ENDED;
998: man->next = ROFF_NEXT_SIBLING;
999: }
1.138 schwarze 1000: }
1001:
1002: void
1003: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1004: {
1005:
1006: /* Adjust siblings. */
1007:
1008: if (n->prev)
1009: n->prev->next = n->next;
1010: if (n->next)
1011: n->next->prev = n->prev;
1012:
1013: /* Adjust parent. */
1014:
1015: if (n->parent != NULL) {
1016: if (n->parent->child == n)
1017: n->parent->child = n->next;
1018: if (n->parent->last == n)
1019: n->parent->last = n->prev;
1020: }
1021:
1022: /* Adjust parse point. */
1023:
1024: if (man == NULL)
1025: return;
1026: if (man->last == n) {
1027: if (n->prev == NULL) {
1028: man->last = n->parent;
1029: man->next = ROFF_NEXT_CHILD;
1030: } else {
1031: man->last = n->prev;
1032: man->next = ROFF_NEXT_SIBLING;
1033: }
1034: }
1035: if (man->first == n)
1036: man->first = NULL;
1037: }
1038:
1039: void
1040: roff_node_free(struct roff_node *n)
1041: {
1042:
1043: if (n->args != NULL)
1044: mdoc_argv_free(n->args);
1045: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1046: free(n->norm);
1.191 schwarze 1047: if (n->eqn != NULL)
1048: eqn_box_free(n->eqn);
1.138 schwarze 1049: free(n->string);
1050: free(n);
1051: }
1052:
1053: void
1054: roff_node_delete(struct roff_man *man, struct roff_node *n)
1055: {
1056:
1057: while (n->child != NULL)
1058: roff_node_delete(man, n->child);
1059: roff_node_unlink(man, n);
1060: roff_node_free(n);
1.141 schwarze 1061: }
1062:
1063: void
1064: deroff(char **dest, const struct roff_node *n)
1065: {
1066: char *cp;
1067: size_t sz;
1068:
1069: if (n->type != ROFFT_TEXT) {
1070: for (n = n->child; n != NULL; n = n->next)
1071: deroff(dest, n);
1072: return;
1073: }
1074:
1.160 schwarze 1075: /* Skip leading whitespace. */
1.141 schwarze 1076:
1.160 schwarze 1077: for (cp = n->string; *cp != '\0'; cp++) {
1.161 schwarze 1078: if (cp[0] == '\\' && cp[1] != '\0' &&
1079: strchr(" %&0^|~", cp[1]) != NULL)
1.141 schwarze 1080: cp++;
1.160 schwarze 1081: else if ( ! isspace((unsigned char)*cp))
1.141 schwarze 1082: break;
1083: }
1084:
1.161 schwarze 1085: /* Skip trailing backslash. */
1086:
1087: sz = strlen(cp);
1.162 schwarze 1088: if (sz > 0 && cp[sz - 1] == '\\')
1.161 schwarze 1089: sz--;
1090:
1.141 schwarze 1091: /* Skip trailing whitespace. */
1092:
1.161 schwarze 1093: for (; sz; sz--)
1.141 schwarze 1094: if ( ! isspace((unsigned char)cp[sz-1]))
1095: break;
1096:
1097: /* Skip empty strings. */
1098:
1099: if (sz == 0)
1100: return;
1101:
1102: if (*dest == NULL) {
1103: *dest = mandoc_strndup(cp, sz);
1104: return;
1105: }
1106:
1107: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1108: free(*dest);
1109: *dest = cp;
1.138 schwarze 1110: }
1111:
1112: /* --- main functions of the roff parser ---------------------------------- */
1113:
1.8 schwarze 1114: /*
1.79 schwarze 1115: * In the current line, expand escape sequences that tend to get
1116: * used in numerical expressions and conditional requests.
1117: * Also check the syntax of the remaining escape sequences.
1.8 schwarze 1118: */
1.45 schwarze 1119: static enum rofferr
1.110 schwarze 1120: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.8 schwarze 1121: {
1.81 schwarze 1122: char ubuf[24]; /* buffer to print the number */
1.200 ! schwarze 1123: struct roff_node *n; /* used for header comments */
1.78 schwarze 1124: const char *start; /* start of the string to process */
1.82 schwarze 1125: char *stesc; /* start of an escape sequence ('\\') */
1.200 ! schwarze 1126: char *ep; /* end of comment string */
1.23 schwarze 1127: const char *stnam; /* start of the name, after "[(*" */
1128: const char *cp; /* end of the name, e.g. before ']' */
1129: const char *res; /* the string to be substituted */
1.110 schwarze 1130: char *nbuf; /* new buffer to copy buf->buf to */
1.53 schwarze 1131: size_t maxl; /* expected length of the escape name */
1132: size_t naml; /* actual length of the escape name */
1.109 schwarze 1133: enum mandoc_esc esc; /* type of the escape sequence */
1134: int inaml; /* length returned from mandoc_escape() */
1.53 schwarze 1135: int expand_count; /* to avoid infinite loops */
1.79 schwarze 1136: int npos; /* position in numeric expression */
1.91 schwarze 1137: int arg_complete; /* argument not interrupted by eol */
1.175 schwarze 1138: int done; /* no more input available */
1.187 schwarze 1139: int deftype; /* type of definition to paste */
1.195 schwarze 1140: int rcsid; /* kind of RCS id seen */
1.199 schwarze 1141: char sign; /* increment number register */
1.79 schwarze 1142: char term; /* character terminating the escape */
1.8 schwarze 1143:
1.175 schwarze 1144: /* Search forward for comments. */
1145:
1146: done = 0;
1147: start = buf->buf + pos;
1148: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1149: if (stesc[0] != r->escape || stesc[1] == '\0')
1150: continue;
1151: stesc++;
1152: if (*stesc != '"' && *stesc != '#')
1153: continue;
1.185 schwarze 1154:
1155: /* Comment found, look for RCS id. */
1156:
1.195 schwarze 1157: rcsid = 0;
1.185 schwarze 1158: if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
1.195 schwarze 1159: rcsid = 1 << MANDOC_OS_OPENBSD;
1.185 schwarze 1160: cp += 8;
1161: } else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
1.195 schwarze 1162: rcsid = 1 << MANDOC_OS_NETBSD;
1.185 schwarze 1163: cp += 7;
1164: }
1165: if (cp != NULL &&
1166: isalnum((unsigned char)*cp) == 0 &&
1.186 schwarze 1167: strchr(cp, '$') != NULL) {
1.195 schwarze 1168: if (r->man->meta.rcsids & rcsid)
1.186 schwarze 1169: mandoc_msg(MANDOCERR_RCS_REP, r->parse,
1170: ln, stesc + 1 - buf->buf, stesc + 1);
1.195 schwarze 1171: r->man->meta.rcsids |= rcsid;
1.186 schwarze 1172: }
1.185 schwarze 1173:
1174: /* Handle trailing whitespace. */
1175:
1.200 ! schwarze 1176: ep = strchr(stesc--, '\0') - 1;
! 1177: if (*ep == '\n') {
1.175 schwarze 1178: done = 1;
1.200 ! schwarze 1179: ep--;
1.175 schwarze 1180: }
1.200 ! schwarze 1181: if (*ep == ' ' || *ep == '\t')
1.175 schwarze 1182: mandoc_msg(MANDOCERR_SPACE_EOL, r->parse,
1.200 ! schwarze 1183: ln, ep - buf->buf, NULL);
! 1184:
! 1185: /*
! 1186: * Save comments preceding the title macro
! 1187: * in the syntax tree.
! 1188: */
! 1189:
! 1190: if (r->format == 0) {
! 1191: while (*ep == ' ' || *ep == '\t')
! 1192: ep--;
! 1193: ep[1] = '\0';
! 1194: n = roff_node_alloc(r->man,
! 1195: ln, stesc + 1 - buf->buf,
! 1196: ROFFT_COMMENT, TOKEN_NONE);
! 1197: n->string = mandoc_strdup(stesc + 2);
! 1198: roff_node_append(r->man, n);
! 1199: n->flags |= NODE_VALID | NODE_ENDED;
! 1200: r->man->next = ROFF_NEXT_SIBLING;
! 1201: }
! 1202:
! 1203: /* Discard comments. */
! 1204:
1.175 schwarze 1205: while (stesc > start && stesc[-1] == ' ')
1206: stesc--;
1207: *stesc = '\0';
1208: break;
1209: }
1210: if (stesc == start)
1211: return ROFF_CONT;
1212: stesc--;
1213:
1214: /* Notice the end of the input. */
1215:
1216: if (*stesc == '\n') {
1217: *stesc-- = '\0';
1218: done = 1;
1219: }
1220:
1.43 schwarze 1221: expand_count = 0;
1.175 schwarze 1222: while (stesc >= start) {
1.43 schwarze 1223:
1.78 schwarze 1224: /* Search backwards for the next backslash. */
1225:
1.175 schwarze 1226: if (*stesc != r->escape) {
1227: if (*stesc == '\\') {
1228: *stesc = '\0';
1229: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1230: buf->buf, stesc + 1) + 1;
1231: start = nbuf + pos;
1232: stesc = nbuf + (stesc - buf->buf);
1233: free(buf->buf);
1234: buf->buf = nbuf;
1235: }
1236: stesc--;
1.78 schwarze 1237: continue;
1.175 schwarze 1238: }
1.78 schwarze 1239:
1240: /* If it is escaped, skip it. */
1241:
1242: for (cp = stesc - 1; cp >= start; cp--)
1.175 schwarze 1243: if (*cp != r->escape)
1.78 schwarze 1244: break;
1245:
1.110 schwarze 1246: if ((stesc - cp) % 2 == 0) {
1.175 schwarze 1247: while (stesc > cp)
1248: *stesc-- = '\\';
1.78 schwarze 1249: continue;
1.175 schwarze 1250: } else if (stesc[1] != '\0') {
1251: *stesc = '\\';
1252: } else {
1253: *stesc-- = '\0';
1254: if (done)
1255: continue;
1256: else
1257: return ROFF_APPEND;
1.78 schwarze 1258: }
1.23 schwarze 1259:
1.79 schwarze 1260: /* Decide whether to expand or to check only. */
1.23 schwarze 1261:
1.79 schwarze 1262: term = '\0';
1.78 schwarze 1263: cp = stesc + 1;
1.53 schwarze 1264: switch (*cp) {
1.80 schwarze 1265: case '*':
1.53 schwarze 1266: res = NULL;
1267: break;
1.80 schwarze 1268: case 'B':
1269: case 'w':
1.79 schwarze 1270: term = cp[1];
1271: /* FALLTHROUGH */
1.80 schwarze 1272: case 'n':
1.199 schwarze 1273: sign = cp[1];
1274: if (sign == '+' || sign == '-')
1275: cp++;
1.53 schwarze 1276: res = ubuf;
1277: break;
1278: default:
1.109 schwarze 1279: esc = mandoc_escape(&cp, &stnam, &inaml);
1280: if (esc == ESCAPE_ERROR ||
1281: (esc == ESCAPE_SPECIAL &&
1.151 schwarze 1282: mchars_spec2cp(stnam, inaml) < 0))
1.92 schwarze 1283: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.110 schwarze 1284: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1285: "%.*s", (int)(cp - stesc), stesc);
1.175 schwarze 1286: stesc--;
1.78 schwarze 1287: continue;
1.42 schwarze 1288: }
1289:
1.78 schwarze 1290: if (EXPAND_LIMIT < ++expand_count) {
1291: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.110 schwarze 1292: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1293: return ROFF_IGN;
1.78 schwarze 1294: }
1.23 schwarze 1295:
1296: /*
1297: * The third character decides the length
1.53 schwarze 1298: * of the name of the string or register.
1.23 schwarze 1299: * Save a pointer to the name.
1300: */
1301:
1.110 schwarze 1302: if (term == '\0') {
1.79 schwarze 1303: switch (*++cp) {
1.80 schwarze 1304: case '\0':
1.79 schwarze 1305: maxl = 0;
1306: break;
1.80 schwarze 1307: case '(':
1.79 schwarze 1308: cp++;
1309: maxl = 2;
1310: break;
1.80 schwarze 1311: case '[':
1.79 schwarze 1312: cp++;
1313: term = ']';
1314: maxl = 0;
1315: break;
1316: default:
1317: maxl = 1;
1318: break;
1319: }
1320: } else {
1321: cp += 2;
1.8 schwarze 1322: maxl = 0;
1323: }
1.23 schwarze 1324: stnam = cp;
1.8 schwarze 1325:
1.23 schwarze 1326: /* Advance to the end of the name. */
1.8 schwarze 1327:
1.125 schwarze 1328: naml = 0;
1.91 schwarze 1329: arg_complete = 1;
1.125 schwarze 1330: while (maxl == 0 || naml < maxl) {
1.110 schwarze 1331: if (*cp == '\0') {
1.92 schwarze 1332: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 1333: ln, (int)(stesc - buf->buf), stesc);
1.91 schwarze 1334: arg_complete = 0;
1.79 schwarze 1335: break;
1.42 schwarze 1336: }
1.110 schwarze 1337: if (maxl == 0 && *cp == term) {
1.79 schwarze 1338: cp++;
1.125 schwarze 1339: break;
1340: }
1341: if (*cp++ != '\\' || stesc[1] != 'w') {
1342: naml++;
1343: continue;
1344: }
1345: switch (mandoc_escape(&cp, NULL, NULL)) {
1346: case ESCAPE_SPECIAL:
1347: case ESCAPE_UNICODE:
1348: case ESCAPE_NUMBERED:
1349: case ESCAPE_OVERSTRIKE:
1350: naml++;
1351: break;
1352: default:
1.8 schwarze 1353: break;
1.79 schwarze 1354: }
1.8 schwarze 1355: }
1356:
1.23 schwarze 1357: /*
1358: * Retrieve the replacement string; if it is
1359: * undefined, resume searching for escapes.
1360: */
1361:
1.79 schwarze 1362: switch (stesc[1]) {
1.80 schwarze 1363: case '*':
1.187 schwarze 1364: if (arg_complete) {
1365: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1366: res = roff_getstrn(r, stnam, naml, &deftype);
1367: }
1.79 schwarze 1368: break;
1.80 schwarze 1369: case 'B':
1.79 schwarze 1370: npos = 0;
1.91 schwarze 1371: ubuf[0] = arg_complete &&
1.133 schwarze 1372: roff_evalnum(r, ln, stnam, &npos,
1373: NULL, ROFFNUM_SCALE) &&
1.91 schwarze 1374: stnam + npos + 1 == cp ? '1' : '0';
1.79 schwarze 1375: ubuf[1] = '\0';
1376: break;
1.80 schwarze 1377: case 'n':
1.91 schwarze 1378: if (arg_complete)
1379: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.199 schwarze 1380: roff_getregn(r, stnam, naml, sign));
1.91 schwarze 1381: else
1382: ubuf[0] = '\0';
1.79 schwarze 1383: break;
1.80 schwarze 1384: case 'w':
1.91 schwarze 1385: /* use even incomplete args */
1.81 schwarze 1386: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.79 schwarze 1387: 24 * (int)naml);
1388: break;
1389: }
1.8 schwarze 1390:
1.110 schwarze 1391: if (res == NULL) {
1.92 schwarze 1392: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1393: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1394: "%.*s", (int)naml, stnam);
1.37 schwarze 1395: res = "";
1.118 schwarze 1396: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1397: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1398: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1399: return ROFF_IGN;
1.8 schwarze 1400: }
1401:
1.23 schwarze 1402: /* Replace the escape sequence by the string. */
1403:
1.82 schwarze 1404: *stesc = '\0';
1.110 schwarze 1405: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1406: buf->buf, res, cp) + 1;
1.8 schwarze 1407:
1.78 schwarze 1408: /* Prepare for the next replacement. */
1.8 schwarze 1409:
1.78 schwarze 1410: start = nbuf + pos;
1.110 schwarze 1411: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1412: free(buf->buf);
1413: buf->buf = nbuf;
1.42 schwarze 1414: }
1.149 schwarze 1415: return ROFF_CONT;
1.42 schwarze 1416: }
1417:
1418: /*
1.147 schwarze 1419: * Process text streams.
1.42 schwarze 1420: */
1421: static enum rofferr
1.177 schwarze 1422: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.42 schwarze 1423: {
1424: size_t sz;
1425: const char *start;
1.51 schwarze 1426: char *p;
1427: int isz;
1.42 schwarze 1428: enum mandoc_esc esc;
1429:
1.147 schwarze 1430: /* Spring the input line trap. */
1431:
1432: if (roffit_lines == 1) {
1433: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1434: free(buf->buf);
1435: buf->buf = p;
1436: buf->sz = isz + 1;
1437: *offs = 0;
1438: free(roffit_macro);
1439: roffit_lines = 0;
1.149 schwarze 1440: return ROFF_REPARSE;
1.147 schwarze 1441: } else if (roffit_lines > 1)
1442: --roffit_lines;
1443:
1.177 schwarze 1444: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1445: if (roffce_lines < 1) {
1446: r->man->last = roffce_node;
1447: r->man->next = ROFF_NEXT_SIBLING;
1448: roffce_lines = 0;
1449: roffce_node = NULL;
1450: } else
1451: roffce_lines--;
1452: }
1453:
1.147 schwarze 1454: /* Convert all breakable hyphens into ASCII_HYPH. */
1455:
1.110 schwarze 1456: start = p = buf->buf + pos;
1.42 schwarze 1457:
1.110 schwarze 1458: while (*p != '\0') {
1.42 schwarze 1459: sz = strcspn(p, "-\\");
1460: p += sz;
1461:
1.110 schwarze 1462: if (*p == '\0')
1.42 schwarze 1463: break;
1464:
1.110 schwarze 1465: if (*p == '\\') {
1.42 schwarze 1466: /* Skip over escapes. */
1467: p++;
1.62 schwarze 1468: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.110 schwarze 1469: if (esc == ESCAPE_ERROR)
1.42 schwarze 1470: break;
1.136 schwarze 1471: while (*p == '-')
1472: p++;
1.42 schwarze 1473: continue;
1474: } else if (p == start) {
1475: p++;
1476: continue;
1477: }
1478:
1.44 schwarze 1479: if (isalpha((unsigned char)p[-1]) &&
1480: isalpha((unsigned char)p[1]))
1.42 schwarze 1481: *p = ASCII_HYPH;
1482: p++;
1.8 schwarze 1483: }
1.149 schwarze 1484: return ROFF_CONT;
1.8 schwarze 1485: }
1486:
1.1 schwarze 1487: enum rofferr
1.110 schwarze 1488: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.1 schwarze 1489: {
1.166 schwarze 1490: enum roff_tok t;
1.27 schwarze 1491: enum rofferr e;
1.110 schwarze 1492: int pos; /* parse point */
1.115 schwarze 1493: int spos; /* saved parse point for messages */
1.110 schwarze 1494: int ppos; /* original offset in buf->buf */
1495: int ctl; /* macro line (boolean) */
1496:
1497: ppos = pos = *offs;
1.1 schwarze 1498:
1.102 schwarze 1499: /* Handle in-line equation delimiters. */
1500:
1.108 schwarze 1501: if (r->tbl == NULL &&
1502: r->last_eqn != NULL && r->last_eqn->delim &&
1.102 schwarze 1503: (r->eqn == NULL || r->eqn_inline)) {
1.110 schwarze 1504: e = roff_eqndelim(r, buf, pos);
1.102 schwarze 1505: if (e == ROFF_REPARSE)
1.149 schwarze 1506: return e;
1.102 schwarze 1507: assert(e == ROFF_CONT);
1508: }
1509:
1510: /* Expand some escape sequences. */
1.8 schwarze 1511:
1.110 schwarze 1512: e = roff_res(r, buf, ln, pos);
1.175 schwarze 1513: if (e == ROFF_IGN || e == ROFF_APPEND)
1.149 schwarze 1514: return e;
1.110 schwarze 1515: assert(e == ROFF_CONT);
1.8 schwarze 1516:
1.110 schwarze 1517: ctl = roff_getcontrol(r, buf->buf, &pos);
1.35 schwarze 1518:
1.8 schwarze 1519: /*
1.2 schwarze 1520: * First, if a scope is open and we're not a macro, pass the
1.124 schwarze 1521: * text through the macro's filter.
1522: * Equations process all content themselves.
1523: * Tables process almost all content themselves, but we want
1524: * to warn about macros before passing it there.
1.2 schwarze 1525: */
1526:
1.124 schwarze 1527: if (r->last != NULL && ! ctl) {
1.2 schwarze 1528: t = r->last->tok;
1.110 schwarze 1529: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.166 schwarze 1530: if (e == ROFF_IGN)
1.149 schwarze 1531: return e;
1.166 schwarze 1532: assert(e == ROFF_CONT);
1.54 schwarze 1533: }
1.191 schwarze 1534: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1535: eqn_read(r->eqn, buf->buf + ppos);
1536: return ROFF_IGN;
1537: }
1.193 schwarze 1538: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1539: tbl_read(r->tbl, ln, buf->buf, ppos);
1540: roff_addtbl(r->man, r->tbl);
1541: return ROFF_IGN;
1542: }
1.124 schwarze 1543: if ( ! ctl)
1.177 schwarze 1544: return roff_parsetext(r, buf, pos, offs);
1.100 schwarze 1545:
1546: /* Skip empty request lines. */
1547:
1.110 schwarze 1548: if (buf->buf[pos] == '"') {
1.100 schwarze 1549: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1550: ln, pos, NULL);
1.149 schwarze 1551: return ROFF_IGN;
1.110 schwarze 1552: } else if (buf->buf[pos] == '\0')
1.149 schwarze 1553: return ROFF_IGN;
1.2 schwarze 1554:
1555: /*
1556: * If a scope is open, go to the child handler for that macro,
1557: * as it may want to preprocess before doing anything with it.
1.32 schwarze 1558: * Don't do so if an equation is open.
1.2 schwarze 1559: */
1560:
1561: if (r->last) {
1.1 schwarze 1562: t = r->last->tok;
1.149 schwarze 1563: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1564: }
1565:
1.115 schwarze 1566: /* No scope is open. This is a new request or macro. */
1567:
1568: spos = pos;
1569: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1570:
1571: /* Tables ignore most macros. */
1572:
1.180 schwarze 1573: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.181 schwarze 1574: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.115 schwarze 1575: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1576: ln, pos, buf->buf + spos);
1.180 schwarze 1577: if (t != TOKEN_NONE)
1.149 schwarze 1578: return ROFF_IGN;
1.129 schwarze 1579: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1580: pos++;
1.163 schwarze 1581: while (buf->buf[pos] == ' ')
1.129 schwarze 1582: pos++;
1.193 schwarze 1583: tbl_read(r->tbl, ln, buf->buf, pos);
1584: roff_addtbl(r->man, r->tbl);
1585: return ROFF_IGN;
1.115 schwarze 1586: }
1587:
1.177 schwarze 1588: /* For now, let high level macros abort .ce mode. */
1589:
1590: if (ctl && roffce_node != NULL &&
1.196 schwarze 1591: (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
1592: t == ROFF_TH || t == ROFF_TS)) {
1.177 schwarze 1593: r->man->last = roffce_node;
1594: r->man->next = ROFF_NEXT_SIBLING;
1595: roffce_lines = 0;
1596: roffce_node = NULL;
1597: }
1598:
1.2 schwarze 1599: /*
1.115 schwarze 1600: * This is neither a roff request nor a user-defined macro.
1601: * Let the standard macro set parsers handle it.
1.2 schwarze 1602: */
1603:
1.166 schwarze 1604: if (t == TOKEN_NONE)
1.149 schwarze 1605: return ROFF_CONT;
1.115 schwarze 1606:
1607: /* Execute a roff request or a user defined macro. */
1.1 schwarze 1608:
1.168 schwarze 1609: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.2 schwarze 1610: }
1611:
1.27 schwarze 1612: void
1.2 schwarze 1613: roff_endparse(struct roff *r)
1614: {
1.193 schwarze 1615: if (r->last != NULL)
1.94 schwarze 1616: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1617: r->last->line, r->last->col,
1.167 schwarze 1618: roff_name[r->last->tok]);
1.27 schwarze 1619:
1.193 schwarze 1620: if (r->eqn != NULL) {
1.94 schwarze 1621: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1.191 schwarze 1622: r->eqn->node->line, r->eqn->node->pos, "EQ");
1623: eqn_parse(r->eqn);
1624: r->eqn = NULL;
1.32 schwarze 1625: }
1626:
1.193 schwarze 1627: if (r->tbl != NULL) {
1.94 schwarze 1628: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1629: r->tbl->line, r->tbl->pos, "TS");
1.193 schwarze 1630: tbl_end(r->tbl);
1631: r->tbl = NULL;
1.27 schwarze 1632: }
1.1 schwarze 1633: }
1634:
1635: /*
1636: * Parse a roff node's type from the input buffer. This must be in the
1637: * form of ".foo xxx" in the usual way.
1638: */
1.166 schwarze 1639: static enum roff_tok
1.87 schwarze 1640: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.1 schwarze 1641: {
1.87 schwarze 1642: char *cp;
1.16 schwarze 1643: const char *mac;
1644: size_t maclen;
1.187 schwarze 1645: int deftype;
1.166 schwarze 1646: enum roff_tok t;
1.1 schwarze 1647:
1.87 schwarze 1648: cp = buf + *pos;
1649:
1650: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.166 schwarze 1651: return TOKEN_NONE;
1.1 schwarze 1652:
1.87 schwarze 1653: mac = cp;
1654: maclen = roff_getname(r, &cp, ln, ppos);
1.1 schwarze 1655:
1.187 schwarze 1656: deftype = ROFFDEF_USER | ROFFDEF_REN;
1657: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
1658: switch (deftype) {
1659: case ROFFDEF_USER:
1660: t = ROFF_USERDEF;
1661: break;
1662: case ROFFDEF_REN:
1663: t = ROFF_RENAMED;
1664: break;
1665: default:
1666: t = roffhash_find(r->reqtab, mac, maclen);
1667: break;
1668: }
1.166 schwarze 1669: if (t != TOKEN_NONE)
1.87 schwarze 1670: *pos = cp - buf;
1.197 schwarze 1671: else if (deftype == ROFFDEF_UNDEF) {
1672: /* Using an undefined macro defines it to be empty. */
1673: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
1674: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
1675: }
1.149 schwarze 1676: return t;
1.1 schwarze 1677: }
1678:
1.138 schwarze 1679: /* --- handling of request blocks ----------------------------------------- */
1680:
1.1 schwarze 1681: static enum rofferr
1.2 schwarze 1682: roff_cblock(ROFF_ARGS)
1.1 schwarze 1683: {
1684:
1.2 schwarze 1685: /*
1686: * A block-close `..' should only be invoked as a child of an
1687: * ignore macro, otherwise raise a warning and just ignore it.
1688: */
1689:
1.110 schwarze 1690: if (r->last == NULL) {
1.94 schwarze 1691: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1692: ln, ppos, "..");
1.149 schwarze 1693: return ROFF_IGN;
1.2 schwarze 1694: }
1.1 schwarze 1695:
1.2 schwarze 1696: switch (r->last->tok) {
1.80 schwarze 1697: case ROFF_am:
1.93 schwarze 1698: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.80 schwarze 1699: case ROFF_ami:
1700: case ROFF_de:
1.23 schwarze 1701: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.80 schwarze 1702: case ROFF_dei:
1703: case ROFF_ig:
1.2 schwarze 1704: break;
1705: default:
1.94 schwarze 1706: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1707: ln, ppos, "..");
1.149 schwarze 1708: return ROFF_IGN;
1.2 schwarze 1709: }
1710:
1.110 schwarze 1711: if (buf->buf[pos] != '\0')
1.90 schwarze 1712: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 1713: ".. %s", buf->buf + pos);
1.2 schwarze 1714:
1715: roffnode_pop(r);
1716: roffnode_cleanscope(r);
1.149 schwarze 1717: return ROFF_IGN;
1.2 schwarze 1718:
1719: }
1.1 schwarze 1720:
1.2 schwarze 1721: static void
1722: roffnode_cleanscope(struct roff *r)
1723: {
1.1 schwarze 1724:
1.2 schwarze 1725: while (r->last) {
1.46 schwarze 1726: if (--r->last->endspan != 0)
1.2 schwarze 1727: break;
1728: roffnode_pop(r);
1729: }
1730: }
1.1 schwarze 1731:
1.68 schwarze 1732: static void
1733: roff_ccond(struct roff *r, int ln, int ppos)
1.2 schwarze 1734: {
1.1 schwarze 1735:
1.2 schwarze 1736: if (NULL == r->last) {
1.94 schwarze 1737: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1738: ln, ppos, "\\}");
1.68 schwarze 1739: return;
1.2 schwarze 1740: }
1.1 schwarze 1741:
1.2 schwarze 1742: switch (r->last->tok) {
1.80 schwarze 1743: case ROFF_el:
1744: case ROFF_ie:
1745: case ROFF_if:
1.2 schwarze 1746: break;
1747: default:
1.94 schwarze 1748: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1749: ln, ppos, "\\}");
1.68 schwarze 1750: return;
1.2 schwarze 1751: }
1.1 schwarze 1752:
1.2 schwarze 1753: if (r->last->endspan > -1) {
1.94 schwarze 1754: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1755: ln, ppos, "\\}");
1.68 schwarze 1756: return;
1.2 schwarze 1757: }
1758:
1759: roffnode_pop(r);
1760: roffnode_cleanscope(r);
1.68 schwarze 1761: return;
1.1 schwarze 1762: }
1763:
1764: static enum rofferr
1.2 schwarze 1765: roff_block(ROFF_ARGS)
1.1 schwarze 1766: {
1.187 schwarze 1767: const char *name, *value;
1768: char *call, *cp, *iname, *rname;
1769: size_t csz, namesz, rsz;
1770: int deftype;
1.16 schwarze 1771:
1.93 schwarze 1772: /* Ignore groff compatibility mode for now. */
1.2 schwarze 1773:
1.110 schwarze 1774: if (tok == ROFF_de1)
1.93 schwarze 1775: tok = ROFF_de;
1.123 schwarze 1776: else if (tok == ROFF_dei1)
1777: tok = ROFF_dei;
1.110 schwarze 1778: else if (tok == ROFF_am1)
1.93 schwarze 1779: tok = ROFF_am;
1.123 schwarze 1780: else if (tok == ROFF_ami1)
1781: tok = ROFF_ami;
1.93 schwarze 1782:
1783: /* Parse the macro name argument. */
1784:
1.110 schwarze 1785: cp = buf->buf + pos;
1786: if (tok == ROFF_ig) {
1.93 schwarze 1787: iname = NULL;
1788: namesz = 0;
1789: } else {
1790: iname = cp;
1791: namesz = roff_getname(r, &cp, ln, ppos);
1792: iname[namesz] = '\0';
1793: }
1.22 schwarze 1794:
1.93 schwarze 1795: /* Resolve the macro name argument if it is indirect. */
1.22 schwarze 1796:
1.110 schwarze 1797: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.187 schwarze 1798: deftype = ROFFDEF_USER;
1799: name = roff_getstrn(r, iname, namesz, &deftype);
1800: if (name == NULL) {
1.93 schwarze 1801: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1802: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1803: "%.*s", (int)namesz, iname);
1804: namesz = 0;
1805: } else
1806: namesz = strlen(name);
1807: } else
1808: name = iname;
1.22 schwarze 1809:
1.110 schwarze 1810: if (namesz == 0 && tok != ROFF_ig) {
1.93 schwarze 1811: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1.167 schwarze 1812: ln, ppos, roff_name[tok]);
1.149 schwarze 1813: return ROFF_IGN;
1.93 schwarze 1814: }
1.2 schwarze 1815:
1.16 schwarze 1816: roffnode_push(r, tok, name, ln, ppos);
1817:
1818: /*
1819: * At the beginning of a `de' macro, clear the existing string
1820: * with the same name, if there is one. New content will be
1.66 schwarze 1821: * appended from roff_block_text() in multiline mode.
1.16 schwarze 1822: */
1.22 schwarze 1823:
1.183 schwarze 1824: if (tok == ROFF_de || tok == ROFF_dei) {
1.86 schwarze 1825: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.183 schwarze 1826: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.187 schwarze 1827: } else if (tok == ROFF_am || tok == ROFF_ami) {
1828: deftype = ROFFDEF_ANY;
1829: value = roff_getstrn(r, iname, namesz, &deftype);
1830: switch (deftype) { /* Before appending, ... */
1831: case ROFFDEF_PRE: /* copy predefined to user-defined. */
1832: roff_setstrn(&r->strtab, name, namesz,
1833: value, strlen(value), 0);
1834: break;
1835: case ROFFDEF_REN: /* call original standard macro. */
1836: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1837: (int)strlen(value), value);
1838: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1839: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1840: free(call);
1841: break;
1842: case ROFFDEF_STD: /* rename and call standard macro. */
1843: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
1844: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
1845: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1846: (int)rsz, rname);
1847: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1848: free(call);
1849: free(rname);
1850: break;
1851: default:
1852: break;
1853: }
1.183 schwarze 1854: }
1.2 schwarze 1855:
1.110 schwarze 1856: if (*cp == '\0')
1.149 schwarze 1857: return ROFF_IGN;
1.1 schwarze 1858:
1.93 schwarze 1859: /* Get the custom end marker. */
1.22 schwarze 1860:
1.93 schwarze 1861: iname = cp;
1.86 schwarze 1862: namesz = roff_getname(r, &cp, ln, ppos);
1.93 schwarze 1863:
1864: /* Resolve the end marker if it is indirect. */
1865:
1.110 schwarze 1866: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.187 schwarze 1867: deftype = ROFFDEF_USER;
1868: name = roff_getstrn(r, iname, namesz, &deftype);
1869: if (name == NULL) {
1.93 schwarze 1870: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1871: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1872: "%.*s", (int)namesz, iname);
1873: namesz = 0;
1874: } else
1875: namesz = strlen(name);
1876: } else
1877: name = iname;
1878:
1.86 schwarze 1879: if (namesz)
1880: r->last->end = mandoc_strndup(name, namesz);
1.2 schwarze 1881:
1.110 schwarze 1882: if (*cp != '\0')
1.90 schwarze 1883: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1.167 schwarze 1884: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.1 schwarze 1885:
1.149 schwarze 1886: return ROFF_IGN;
1.1 schwarze 1887: }
1888:
1889: static enum rofferr
1.2 schwarze 1890: roff_block_sub(ROFF_ARGS)
1.1 schwarze 1891: {
1.166 schwarze 1892: enum roff_tok t;
1.2 schwarze 1893: int i, j;
1894:
1895: /*
1896: * First check whether a custom macro exists at this level. If
1897: * it does, then check against it. This is some of groff's
1898: * stranger behaviours. If we encountered a custom end-scope
1899: * tag and that tag also happens to be a "real" macro, then we
1900: * need to try interpreting it again as a real macro. If it's
1901: * not, then return ignore. Else continue.
1902: */
1903:
1904: if (r->last->end) {
1.35 schwarze 1905: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.110 schwarze 1906: if (buf->buf[i] != r->last->end[j])
1.2 schwarze 1907: break;
1.1 schwarze 1908:
1.110 schwarze 1909: if (r->last->end[j] == '\0' &&
1910: (buf->buf[i] == '\0' ||
1911: buf->buf[i] == ' ' ||
1912: buf->buf[i] == '\t')) {
1.2 schwarze 1913: roffnode_pop(r);
1914: roffnode_cleanscope(r);
1.1 schwarze 1915:
1.110 schwarze 1916: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.35 schwarze 1917: i++;
1918:
1919: pos = i;
1.110 schwarze 1920: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.166 schwarze 1921: TOKEN_NONE)
1.149 schwarze 1922: return ROFF_RERUN;
1923: return ROFF_IGN;
1.2 schwarze 1924: }
1.1 schwarze 1925: }
1926:
1.2 schwarze 1927: /*
1928: * If we have no custom end-query or lookup failed, then try
1929: * pulling it out of the hashtable.
1930: */
1.1 schwarze 1931:
1.110 schwarze 1932: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.1 schwarze 1933:
1.110 schwarze 1934: if (t != ROFF_cblock) {
1935: if (tok != ROFF_ig)
1936: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.149 schwarze 1937: return ROFF_IGN;
1.16 schwarze 1938: }
1.1 schwarze 1939:
1.149 schwarze 1940: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1941: }
1942:
1943: static enum rofferr
1944: roff_block_text(ROFF_ARGS)
1945: {
1946:
1.110 schwarze 1947: if (tok != ROFF_ig)
1948: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.16 schwarze 1949:
1.149 schwarze 1950: return ROFF_IGN;
1.2 schwarze 1951: }
1952:
1953: static enum rofferr
1954: roff_cond_sub(ROFF_ARGS)
1955: {
1.166 schwarze 1956: enum roff_tok t;
1.37 schwarze 1957: char *ep;
1.71 schwarze 1958: int rr;
1.2 schwarze 1959:
1960: rr = r->last->rule;
1.37 schwarze 1961: roffnode_cleanscope(r);
1.39 schwarze 1962:
1.69 schwarze 1963: /*
1964: * If `\}' occurs on a macro line without a preceding macro,
1965: * drop the line completely.
1966: */
1967:
1.110 schwarze 1968: ep = buf->buf + pos;
1969: if (ep[0] == '\\' && ep[1] == '}')
1.71 schwarze 1970: rr = 0;
1.69 schwarze 1971:
1.50 schwarze 1972: /* Always check for the closing delimiter `\}'. */
1.39 schwarze 1973:
1.110 schwarze 1974: while ((ep = strchr(ep, '\\')) != NULL) {
1.190 schwarze 1975: switch (ep[1]) {
1976: case '}':
1977: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1978: roff_ccond(r, ln, ep - buf->buf);
1979: break;
1980: case '\0':
1981: ++ep;
1982: break;
1983: default:
1984: ep += 2;
1985: break;
1.70 schwarze 1986: }
1.50 schwarze 1987: }
1.190 schwarze 1988:
1989: /*
1990: * Fully handle known macros when they are structurally
1991: * required or when the conditional evaluated to true.
1992: */
1993:
1994: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1995: return t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT)
1996: ? (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs) : rr
1997: ? ROFF_CONT : ROFF_IGN;
1.2 schwarze 1998: }
1999:
2000: static enum rofferr
2001: roff_cond_text(ROFF_ARGS)
2002: {
1.37 schwarze 2003: char *ep;
1.71 schwarze 2004: int rr;
1.2 schwarze 2005:
2006: rr = r->last->rule;
1.37 schwarze 2007: roffnode_cleanscope(r);
1.1 schwarze 2008:
1.110 schwarze 2009: ep = buf->buf + pos;
2010: while ((ep = strchr(ep, '\\')) != NULL) {
2011: if (*(++ep) == '}') {
1.70 schwarze 2012: *ep = '&';
1.110 schwarze 2013: roff_ccond(r, ln, ep - buf->buf - 1);
1.70 schwarze 2014: }
1.119 schwarze 2015: if (*ep != '\0')
2016: ++ep;
1.2 schwarze 2017: }
1.149 schwarze 2018: return rr ? ROFF_CONT : ROFF_IGN;
1.2 schwarze 2019: }
2020:
1.138 schwarze 2021: /* --- handling of numeric and conditional expressions -------------------- */
2022:
1.77 schwarze 2023: /*
2024: * Parse a single signed integer number. Stop at the first non-digit.
2025: * If there is at least one digit, return success and advance the
2026: * parse point, else return failure and let the parse point unchanged.
2027: * Ignore overflows, treat them just like the C language.
2028: */
1.56 schwarze 2029: static int
1.133 schwarze 2030: roff_getnum(const char *v, int *pos, int *res, int flags)
1.56 schwarze 2031: {
1.133 schwarze 2032: int myres, scaled, n, p;
1.79 schwarze 2033:
2034: if (NULL == res)
2035: res = &myres;
1.56 schwarze 2036:
2037: p = *pos;
2038: n = v[p] == '-';
1.133 schwarze 2039: if (n || v[p] == '+')
1.56 schwarze 2040: p++;
2041:
1.133 schwarze 2042: if (flags & ROFFNUM_WHITE)
2043: while (isspace((unsigned char)v[p]))
2044: p++;
2045:
1.56 schwarze 2046: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.77 schwarze 2047: *res = 10 * *res + v[p] - '0';
1.56 schwarze 2048: if (p == *pos + n)
2049: return 0;
2050:
2051: if (n)
2052: *res = -*res;
2053:
1.126 schwarze 2054: /* Each number may be followed by one optional scaling unit. */
2055:
2056: switch (v[p]) {
2057: case 'f':
1.133 schwarze 2058: scaled = *res * 65536;
1.126 schwarze 2059: break;
2060: case 'i':
1.133 schwarze 2061: scaled = *res * 240;
1.126 schwarze 2062: break;
2063: case 'c':
1.133 schwarze 2064: scaled = *res * 240 / 2.54;
1.126 schwarze 2065: break;
2066: case 'v':
2067: case 'P':
1.133 schwarze 2068: scaled = *res * 40;
1.126 schwarze 2069: break;
2070: case 'm':
2071: case 'n':
1.133 schwarze 2072: scaled = *res * 24;
1.126 schwarze 2073: break;
2074: case 'p':
1.133 schwarze 2075: scaled = *res * 10 / 3;
1.126 schwarze 2076: break;
2077: case 'u':
1.133 schwarze 2078: scaled = *res;
1.126 schwarze 2079: break;
2080: case 'M':
1.133 schwarze 2081: scaled = *res * 6 / 25;
1.126 schwarze 2082: break;
2083: default:
1.133 schwarze 2084: scaled = *res;
1.126 schwarze 2085: p--;
2086: break;
2087: }
1.133 schwarze 2088: if (flags & ROFFNUM_SCALE)
2089: *res = scaled;
1.126 schwarze 2090:
2091: *pos = p + 1;
1.149 schwarze 2092: return 1;
1.56 schwarze 2093: }
2094:
1.71 schwarze 2095: /*
2096: * Evaluate a string comparison condition.
2097: * The first character is the delimiter.
2098: * Succeed if the string up to its second occurrence
2099: * matches the string up to its third occurence.
2100: * Advance the cursor after the third occurrence
2101: * or lacking that, to the end of the line.
2102: */
2103: static int
2104: roff_evalstrcond(const char *v, int *pos)
2105: {
2106: const char *s1, *s2, *s3;
2107: int match;
2108:
2109: match = 0;
2110: s1 = v + *pos; /* initial delimiter */
2111: s2 = s1 + 1; /* for scanning the first string */
2112: s3 = strchr(s2, *s1); /* for scanning the second string */
2113:
2114: if (NULL == s3) /* found no middle delimiter */
2115: goto out;
2116:
2117: while ('\0' != *++s3) {
2118: if (*s2 != *s3) { /* mismatch */
2119: s3 = strchr(s3, *s1);
2120: break;
2121: }
2122: if (*s3 == *s1) { /* found the final delimiter */
2123: match = 1;
2124: break;
2125: }
2126: s2++;
2127: }
2128:
2129: out:
2130: if (NULL == s3)
2131: s3 = strchr(s2, '\0');
1.114 schwarze 2132: else if (*s3 != '\0')
1.71 schwarze 2133: s3++;
2134: *pos = s3 - v;
1.149 schwarze 2135: return match;
1.71 schwarze 2136: }
2137:
1.77 schwarze 2138: /*
2139: * Evaluate an optionally negated single character, numerical,
2140: * or string condition.
2141: */
1.71 schwarze 2142: static int
1.143 schwarze 2143: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.5 schwarze 2144: {
1.143 schwarze 2145: char *cp, *name;
2146: size_t sz;
1.187 schwarze 2147: int deftype, number, savepos, istrue, wanttrue;
1.5 schwarze 2148:
1.71 schwarze 2149: if ('!' == v[*pos]) {
2150: wanttrue = 0;
2151: (*pos)++;
2152: } else
2153: wanttrue = 1;
2154:
1.5 schwarze 2155: switch (v[*pos]) {
1.112 schwarze 2156: case '\0':
1.149 schwarze 2157: return 0;
1.80 schwarze 2158: case 'n':
2159: case 'o':
1.5 schwarze 2160: (*pos)++;
1.149 schwarze 2161: return wanttrue;
1.80 schwarze 2162: case 'c':
2163: case 'e':
2164: case 't':
1.111 schwarze 2165: case 'v':
1.5 schwarze 2166: (*pos)++;
1.149 schwarze 2167: return !wanttrue;
1.182 schwarze 2168: case 'd':
1.143 schwarze 2169: case 'r':
1.182 schwarze 2170: cp = v + *pos + 1;
2171: while (*cp == ' ')
2172: cp++;
2173: name = cp;
2174: sz = roff_getname(r, &cp, ln, cp - v);
1.187 schwarze 2175: if (sz == 0)
2176: istrue = 0;
2177: else if (v[*pos] == 'r')
2178: istrue = roff_hasregn(r, name, sz);
2179: else {
2180: deftype = ROFFDEF_ANY;
2181: roff_getstrn(r, name, sz, &deftype);
2182: istrue = !!deftype;
2183: }
1.143 schwarze 2184: *pos = cp - v;
1.182 schwarze 2185: return istrue == wanttrue;
1.5 schwarze 2186: default:
2187: break;
2188: }
2189:
1.113 schwarze 2190: savepos = *pos;
1.133 schwarze 2191: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.149 schwarze 2192: return (number > 0) == wanttrue;
1.113 schwarze 2193: else if (*pos == savepos)
1.149 schwarze 2194: return roff_evalstrcond(v, pos) == wanttrue;
1.77 schwarze 2195: else
1.149 schwarze 2196: return 0;
1.5 schwarze 2197: }
2198:
1.2 schwarze 2199: static enum rofferr
1.21 schwarze 2200: roff_line_ignore(ROFF_ARGS)
1.6 schwarze 2201: {
1.30 schwarze 2202:
1.149 schwarze 2203: return ROFF_IGN;
1.21 schwarze 2204: }
2205:
2206: static enum rofferr
1.123 schwarze 2207: roff_insec(ROFF_ARGS)
2208: {
2209:
2210: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
1.167 schwarze 2211: ln, ppos, roff_name[tok]);
1.149 schwarze 2212: return ROFF_IGN;
1.123 schwarze 2213: }
2214:
2215: static enum rofferr
2216: roff_unsupp(ROFF_ARGS)
2217: {
2218:
2219: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
1.167 schwarze 2220: ln, ppos, roff_name[tok]);
1.149 schwarze 2221: return ROFF_IGN;
1.123 schwarze 2222: }
2223:
2224: static enum rofferr
1.2 schwarze 2225: roff_cond(ROFF_ARGS)
2226: {
1.46 schwarze 2227:
2228: roffnode_push(r, tok, NULL, ln, ppos);
1.2 schwarze 2229:
1.80 schwarze 2230: /*
1.35 schwarze 2231: * An `.el' has no conditional body: it will consume the value
2232: * of the current rstack entry set in prior `ie' calls or
1.80 schwarze 2233: * defaults to DENY.
1.35 schwarze 2234: *
2235: * If we're not an `el', however, then evaluate the conditional.
2236: */
1.1 schwarze 2237:
1.110 schwarze 2238: r->last->rule = tok == ROFF_el ?
1.80 schwarze 2239: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.110 schwarze 2240: roff_evalcond(r, ln, buf->buf, &pos);
1.2 schwarze 2241:
1.35 schwarze 2242: /*
2243: * An if-else will put the NEGATION of the current evaluated
2244: * conditional into the stack of rules.
2245: */
2246:
1.110 schwarze 2247: if (tok == ROFF_ie) {
1.96 schwarze 2248: if (r->rstackpos + 1 == r->rstacksz) {
2249: r->rstacksz += 16;
2250: r->rstack = mandoc_reallocarray(r->rstack,
2251: r->rstacksz, sizeof(int));
1.35 schwarze 2252: }
1.71 schwarze 2253: r->rstack[++r->rstackpos] = !r->last->rule;
1.2 schwarze 2254: }
1.5 schwarze 2255:
2256: /* If the parent has false as its rule, then so do we. */
2257:
1.71 schwarze 2258: if (r->last->parent && !r->last->parent->rule)
2259: r->last->rule = 0;
1.5 schwarze 2260:
2261: /*
1.46 schwarze 2262: * Determine scope.
2263: * If there is nothing on the line after the conditional,
2264: * not even whitespace, use next-line scope.
1.5 schwarze 2265: */
1.2 schwarze 2266:
1.110 schwarze 2267: if (buf->buf[pos] == '\0') {
1.46 schwarze 2268: r->last->endspan = 2;
2269: goto out;
2270: }
2271:
1.110 schwarze 2272: while (buf->buf[pos] == ' ')
1.46 schwarze 2273: pos++;
2274:
2275: /* An opening brace requests multiline scope. */
1.2 schwarze 2276:
1.110 schwarze 2277: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.2 schwarze 2278: r->last->endspan = -1;
2279: pos += 2;
1.144 schwarze 2280: while (buf->buf[pos] == ' ')
2281: pos++;
1.46 schwarze 2282: goto out;
1.80 schwarze 2283: }
1.2 schwarze 2284:
2285: /*
1.46 schwarze 2286: * Anything else following the conditional causes
2287: * single-line scope. Warn if the scope contains
2288: * nothing but trailing whitespace.
1.2 schwarze 2289: */
2290:
1.110 schwarze 2291: if (buf->buf[pos] == '\0')
1.89 schwarze 2292: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
1.167 schwarze 2293: ln, ppos, roff_name[tok]);
1.2 schwarze 2294:
1.46 schwarze 2295: r->last->endspan = 1;
1.1 schwarze 2296:
1.46 schwarze 2297: out:
1.2 schwarze 2298: *offs = pos;
1.149 schwarze 2299: return ROFF_RERUN;
1.1 schwarze 2300: }
2301:
1.2 schwarze 2302: static enum rofferr
1.7 schwarze 2303: roff_ds(ROFF_ARGS)
2304: {
1.85 schwarze 2305: char *string;
2306: const char *name;
2307: size_t namesz;
1.10 schwarze 2308:
1.123 schwarze 2309: /* Ignore groff compatibility mode for now. */
2310:
2311: if (tok == ROFF_ds1)
2312: tok = ROFF_ds;
2313: else if (tok == ROFF_as1)
2314: tok = ROFF_as;
2315:
1.10 schwarze 2316: /*
1.85 schwarze 2317: * The first word is the name of the string.
2318: * If it is empty or terminated by an escape sequence,
2319: * abort the `ds' request without defining anything.
1.10 schwarze 2320: */
1.7 schwarze 2321:
1.110 schwarze 2322: name = string = buf->buf + pos;
2323: if (*name == '\0')
1.149 schwarze 2324: return ROFF_IGN;
1.7 schwarze 2325:
1.85 schwarze 2326: namesz = roff_getname(r, &string, ln, pos);
1.110 schwarze 2327: if (name[namesz] == '\\')
1.149 schwarze 2328: return ROFF_IGN;
1.85 schwarze 2329:
2330: /* Read past the initial double-quote, if any. */
1.110 schwarze 2331: if (*string == '"')
1.7 schwarze 2332: string++;
2333:
1.10 schwarze 2334: /* The rest is the value. */
1.85 schwarze 2335: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2336: ROFF_as == tok);
1.183 schwarze 2337: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.149 schwarze 2338: return ROFF_IGN;
1.7 schwarze 2339: }
2340:
1.77 schwarze 2341: /*
2342: * Parse a single operator, one or two characters long.
2343: * If the operator is recognized, return success and advance the
2344: * parse point, else return failure and let the parse point unchanged.
2345: */
2346: static int
2347: roff_getop(const char *v, int *pos, char *res)
2348: {
2349:
2350: *res = v[*pos];
2351:
2352: switch (*res) {
1.80 schwarze 2353: case '+':
2354: case '-':
2355: case '*':
2356: case '/':
2357: case '%':
2358: case '&':
2359: case ':':
1.77 schwarze 2360: break;
2361: case '<':
2362: switch (v[*pos + 1]) {
1.80 schwarze 2363: case '=':
1.77 schwarze 2364: *res = 'l';
2365: (*pos)++;
2366: break;
1.80 schwarze 2367: case '>':
1.77 schwarze 2368: *res = '!';
2369: (*pos)++;
2370: break;
1.80 schwarze 2371: case '?':
1.77 schwarze 2372: *res = 'i';
2373: (*pos)++;
2374: break;
2375: default:
2376: break;
2377: }
2378: break;
2379: case '>':
2380: switch (v[*pos + 1]) {
1.80 schwarze 2381: case '=':
1.77 schwarze 2382: *res = 'g';
2383: (*pos)++;
2384: break;
1.80 schwarze 2385: case '?':
1.77 schwarze 2386: *res = 'a';
2387: (*pos)++;
2388: break;
2389: default:
2390: break;
2391: }
2392: break;
2393: case '=':
2394: if ('=' == v[*pos + 1])
2395: (*pos)++;
2396: break;
2397: default:
1.149 schwarze 2398: return 0;
1.77 schwarze 2399: }
2400: (*pos)++;
2401:
1.149 schwarze 2402: return *res;
1.77 schwarze 2403: }
2404:
2405: /*
2406: * Evaluate either a parenthesized numeric expression
2407: * or a single signed integer number.
2408: */
2409: static int
1.106 schwarze 2410: roff_evalpar(struct roff *r, int ln,
1.133 schwarze 2411: const char *v, int *pos, int *res, int flags)
1.77 schwarze 2412: {
2413:
2414: if ('(' != v[*pos])
1.149 schwarze 2415: return roff_getnum(v, pos, res, flags);
1.77 schwarze 2416:
2417: (*pos)++;
1.133 schwarze 2418: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.149 schwarze 2419: return 0;
1.77 schwarze 2420:
1.79 schwarze 2421: /*
2422: * Omission of the closing parenthesis
2423: * is an error in validation mode,
2424: * but ignored in evaluation mode.
2425: */
2426:
1.77 schwarze 2427: if (')' == v[*pos])
2428: (*pos)++;
1.79 schwarze 2429: else if (NULL == res)
1.149 schwarze 2430: return 0;
1.77 schwarze 2431:
1.149 schwarze 2432: return 1;
1.77 schwarze 2433: }
2434:
2435: /*
2436: * Evaluate a complete numeric expression.
2437: * Proceed left to right, there is no concept of precedence.
2438: */
2439: static int
1.106 schwarze 2440: roff_evalnum(struct roff *r, int ln, const char *v,
1.133 schwarze 2441: int *pos, int *res, int flags)
1.77 schwarze 2442: {
2443: int mypos, operand2;
2444: char operator;
2445:
2446: if (NULL == pos) {
2447: mypos = 0;
2448: pos = &mypos;
2449: }
2450:
1.133 schwarze 2451: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2452: while (isspace((unsigned char)v[*pos]))
2453: (*pos)++;
2454:
1.133 schwarze 2455: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.149 schwarze 2456: return 0;
1.77 schwarze 2457:
2458: while (1) {
1.133 schwarze 2459: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2460: while (isspace((unsigned char)v[*pos]))
2461: (*pos)++;
2462:
2463: if ( ! roff_getop(v, pos, &operator))
2464: break;
2465:
1.133 schwarze 2466: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2467: while (isspace((unsigned char)v[*pos]))
2468: (*pos)++;
2469:
1.133 schwarze 2470: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.149 schwarze 2471: return 0;
1.77 schwarze 2472:
1.133 schwarze 2473: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2474: while (isspace((unsigned char)v[*pos]))
2475: (*pos)++;
1.79 schwarze 2476:
2477: if (NULL == res)
2478: continue;
1.77 schwarze 2479:
2480: switch (operator) {
1.80 schwarze 2481: case '+':
1.77 schwarze 2482: *res += operand2;
2483: break;
1.80 schwarze 2484: case '-':
1.77 schwarze 2485: *res -= operand2;
2486: break;
1.80 schwarze 2487: case '*':
1.77 schwarze 2488: *res *= operand2;
2489: break;
1.80 schwarze 2490: case '/':
1.116 schwarze 2491: if (operand2 == 0) {
1.106 schwarze 2492: mandoc_msg(MANDOCERR_DIVZERO,
2493: r->parse, ln, *pos, v);
2494: *res = 0;
2495: break;
2496: }
1.77 schwarze 2497: *res /= operand2;
2498: break;
1.80 schwarze 2499: case '%':
1.116 schwarze 2500: if (operand2 == 0) {
2501: mandoc_msg(MANDOCERR_DIVZERO,
2502: r->parse, ln, *pos, v);
2503: *res = 0;
2504: break;
2505: }
1.77 schwarze 2506: *res %= operand2;
2507: break;
1.80 schwarze 2508: case '<':
1.77 schwarze 2509: *res = *res < operand2;
2510: break;
1.80 schwarze 2511: case '>':
1.77 schwarze 2512: *res = *res > operand2;
2513: break;
1.80 schwarze 2514: case 'l':
1.77 schwarze 2515: *res = *res <= operand2;
2516: break;
1.80 schwarze 2517: case 'g':
1.77 schwarze 2518: *res = *res >= operand2;
2519: break;
1.80 schwarze 2520: case '=':
1.77 schwarze 2521: *res = *res == operand2;
2522: break;
1.80 schwarze 2523: case '!':
1.77 schwarze 2524: *res = *res != operand2;
2525: break;
1.80 schwarze 2526: case '&':
1.77 schwarze 2527: *res = *res && operand2;
2528: break;
1.80 schwarze 2529: case ':':
1.77 schwarze 2530: *res = *res || operand2;
2531: break;
1.80 schwarze 2532: case 'i':
1.77 schwarze 2533: if (operand2 < *res)
2534: *res = operand2;
2535: break;
1.80 schwarze 2536: case 'a':
1.77 schwarze 2537: if (operand2 > *res)
2538: *res = operand2;
2539: break;
2540: default:
2541: abort();
2542: }
2543: }
1.149 schwarze 2544: return 1;
1.77 schwarze 2545: }
2546:
1.138 schwarze 2547: /* --- register management ------------------------------------------------ */
2548:
1.52 schwarze 2549: void
1.60 schwarze 2550: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.41 schwarze 2551: {
1.199 schwarze 2552: roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
1.198 schwarze 2553: }
2554:
2555: static void
2556: roff_setregn(struct roff *r, const char *name, size_t len,
1.199 schwarze 2557: int val, char sign, int step)
1.198 schwarze 2558: {
1.52 schwarze 2559: struct roffreg *reg;
2560:
2561: /* Search for an existing register with the same name. */
2562: reg = r->regtab;
2563:
1.198 schwarze 2564: while (reg != NULL && (reg->key.sz != len ||
2565: strncmp(reg->key.p, name, len) != 0))
1.52 schwarze 2566: reg = reg->next;
1.41 schwarze 2567:
1.52 schwarze 2568: if (NULL == reg) {
2569: /* Create a new register. */
2570: reg = mandoc_malloc(sizeof(struct roffreg));
1.198 schwarze 2571: reg->key.p = mandoc_strndup(name, len);
2572: reg->key.sz = len;
1.60 schwarze 2573: reg->val = 0;
1.199 schwarze 2574: reg->step = 0;
1.52 schwarze 2575: reg->next = r->regtab;
2576: r->regtab = reg;
2577: }
2578:
1.60 schwarze 2579: if ('+' == sign)
2580: reg->val += val;
2581: else if ('-' == sign)
2582: reg->val -= val;
2583: else
2584: reg->val = val;
1.199 schwarze 2585: if (step != INT_MIN)
2586: reg->step = step;
1.41 schwarze 2587: }
2588:
1.65 schwarze 2589: /*
2590: * Handle some predefined read-only number registers.
2591: * For now, return -1 if the requested register is not predefined;
2592: * in case a predefined read-only register having the value -1
2593: * were to turn up, another special value would have to be chosen.
2594: */
2595: static int
1.145 schwarze 2596: roff_getregro(const struct roff *r, const char *name)
1.65 schwarze 2597: {
2598:
2599: switch (*name) {
1.145 schwarze 2600: case '$': /* Number of arguments of the last macro evaluated. */
1.149 schwarze 2601: return r->argc;
1.80 schwarze 2602: case 'A': /* ASCII approximation mode is always off. */
1.149 schwarze 2603: return 0;
1.80 schwarze 2604: case 'g': /* Groff compatibility mode is always on. */
1.149 schwarze 2605: return 1;
1.80 schwarze 2606: case 'H': /* Fixed horizontal resolution. */
1.149 schwarze 2607: return 24;
1.80 schwarze 2608: case 'j': /* Always adjust left margin only. */
1.149 schwarze 2609: return 0;
1.80 schwarze 2610: case 'T': /* Some output device is always defined. */
1.149 schwarze 2611: return 1;
1.80 schwarze 2612: case 'V': /* Fixed vertical resolution. */
1.149 schwarze 2613: return 40;
1.65 schwarze 2614: default:
1.149 schwarze 2615: return -1;
1.65 schwarze 2616: }
2617: }
2618:
1.53 schwarze 2619: int
1.198 schwarze 2620: roff_getreg(struct roff *r, const char *name)
1.41 schwarze 2621: {
1.199 schwarze 2622: return roff_getregn(r, name, strlen(name), '\0');
1.53 schwarze 2623: }
2624:
2625: static int
1.199 schwarze 2626: roff_getregn(struct roff *r, const char *name, size_t len, char sign)
1.53 schwarze 2627: {
2628: struct roffreg *reg;
1.65 schwarze 2629: int val;
2630:
2631: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2632: val = roff_getregro(r, name + 1);
1.65 schwarze 2633: if (-1 != val)
1.149 schwarze 2634: return val;
1.65 schwarze 2635: }
1.53 schwarze 2636:
1.199 schwarze 2637: for (reg = r->regtab; reg; reg = reg->next) {
1.53 schwarze 2638: if (len == reg->key.sz &&
1.199 schwarze 2639: 0 == strncmp(name, reg->key.p, len)) {
2640: switch (sign) {
2641: case '+':
2642: reg->val += reg->step;
2643: break;
2644: case '-':
2645: reg->val -= reg->step;
2646: break;
2647: default:
2648: break;
2649: }
1.149 schwarze 2650: return reg->val;
1.199 schwarze 2651: }
2652: }
1.143 schwarze 2653:
1.199 schwarze 2654: roff_setregn(r, name, len, 0, '\0', INT_MIN);
1.149 schwarze 2655: return 0;
1.143 schwarze 2656: }
2657:
2658: static int
2659: roff_hasregn(const struct roff *r, const char *name, size_t len)
2660: {
2661: struct roffreg *reg;
2662: int val;
2663:
2664: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2665: val = roff_getregro(r, name + 1);
1.143 schwarze 2666: if (-1 != val)
1.149 schwarze 2667: return 1;
1.143 schwarze 2668: }
2669:
2670: for (reg = r->regtab; reg; reg = reg->next)
2671: if (len == reg->key.sz &&
2672: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 2673: return 1;
1.41 schwarze 2674:
1.149 schwarze 2675: return 0;
1.41 schwarze 2676: }
2677:
1.52 schwarze 2678: static void
2679: roff_freereg(struct roffreg *reg)
1.41 schwarze 2680: {
1.52 schwarze 2681: struct roffreg *old_reg;
1.41 schwarze 2682:
1.52 schwarze 2683: while (NULL != reg) {
2684: free(reg->key.p);
2685: old_reg = reg;
2686: reg = reg->next;
2687: free(old_reg);
2688: }
1.41 schwarze 2689: }
1.7 schwarze 2690:
2691: static enum rofferr
1.6 schwarze 2692: roff_nr(ROFF_ARGS)
1.1 schwarze 2693: {
1.199 schwarze 2694: char *key, *val, *step;
1.85 schwarze 2695: size_t keysz;
1.199 schwarze 2696: int iv, is, len;
1.60 schwarze 2697: char sign;
1.6 schwarze 2698:
1.110 schwarze 2699: key = val = buf->buf + pos;
2700: if (*key == '\0')
1.149 schwarze 2701: return ROFF_IGN;
1.85 schwarze 2702:
2703: keysz = roff_getname(r, &val, ln, pos);
1.110 schwarze 2704: if (key[keysz] == '\\')
1.149 schwarze 2705: return ROFF_IGN;
1.6 schwarze 2706:
1.60 schwarze 2707: sign = *val;
1.110 schwarze 2708: if (sign == '+' || sign == '-')
1.60 schwarze 2709: val++;
2710:
1.199 schwarze 2711: len = 0;
2712: if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
2713: return ROFF_IGN;
2714:
2715: step = val + len;
2716: while (isspace((unsigned char)*step))
2717: step++;
2718: if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)
2719: is = INT_MIN;
1.1 schwarze 2720:
1.199 schwarze 2721: roff_setregn(r, key, keysz, iv, sign, is);
1.149 schwarze 2722: return ROFF_IGN;
1.76 schwarze 2723: }
2724:
2725: static enum rofferr
2726: roff_rr(ROFF_ARGS)
2727: {
2728: struct roffreg *reg, **prev;
1.85 schwarze 2729: char *name, *cp;
2730: size_t namesz;
1.76 schwarze 2731:
1.110 schwarze 2732: name = cp = buf->buf + pos;
2733: if (*name == '\0')
1.149 schwarze 2734: return ROFF_IGN;
1.85 schwarze 2735: namesz = roff_getname(r, &cp, ln, pos);
2736: name[namesz] = '\0';
1.76 schwarze 2737:
2738: prev = &r->regtab;
2739: while (1) {
2740: reg = *prev;
1.110 schwarze 2741: if (reg == NULL || !strcmp(name, reg->key.p))
1.76 schwarze 2742: break;
2743: prev = ®->next;
2744: }
1.110 schwarze 2745: if (reg != NULL) {
1.76 schwarze 2746: *prev = reg->next;
2747: free(reg->key.p);
2748: free(reg);
2749: }
1.149 schwarze 2750: return ROFF_IGN;
1.29 schwarze 2751: }
2752:
1.138 schwarze 2753: /* --- handler functions for roff requests -------------------------------- */
2754:
1.29 schwarze 2755: static enum rofferr
2756: roff_rm(ROFF_ARGS)
2757: {
2758: const char *name;
2759: char *cp;
1.85 schwarze 2760: size_t namesz;
1.29 schwarze 2761:
1.110 schwarze 2762: cp = buf->buf + pos;
2763: while (*cp != '\0') {
1.85 schwarze 2764: name = cp;
1.110 schwarze 2765: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.85 schwarze 2766: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.183 schwarze 2767: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.110 schwarze 2768: if (name[namesz] == '\\')
1.85 schwarze 2769: break;
1.29 schwarze 2770: }
1.149 schwarze 2771: return ROFF_IGN;
1.51 schwarze 2772: }
2773:
2774: static enum rofferr
2775: roff_it(ROFF_ARGS)
2776: {
2777: int iv;
2778:
2779: /* Parse the number of lines. */
1.133 schwarze 2780:
2781: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.95 schwarze 2782: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.110 schwarze 2783: ln, ppos, buf->buf + 1);
1.149 schwarze 2784: return ROFF_IGN;
1.51 schwarze 2785: }
2786:
1.134 schwarze 2787: while (isspace((unsigned char)buf->buf[pos]))
2788: pos++;
2789:
2790: /*
2791: * Arm the input line trap.
2792: * Special-casing "an-trap" is an ugly workaround to cope
2793: * with DocBook stupidly fiddling with man(7) internals.
2794: */
1.133 schwarze 2795:
1.51 schwarze 2796: roffit_lines = iv;
1.134 schwarze 2797: roffit_macro = mandoc_strdup(iv != 1 ||
2798: strcmp(buf->buf + pos, "an-trap") ?
2799: buf->buf + pos : "br");
1.149 schwarze 2800: return ROFF_IGN;
1.47 schwarze 2801: }
2802:
2803: static enum rofferr
2804: roff_Dd(ROFF_ARGS)
2805: {
1.187 schwarze 2806: int mask;
2807: enum roff_tok t, te;
1.99 schwarze 2808:
1.187 schwarze 2809: switch (tok) {
2810: case ROFF_Dd:
2811: tok = MDOC_Dd;
2812: te = MDOC_MAX;
2813: if (r->format == 0)
2814: r->format = MPARSE_MDOC;
2815: mask = MPARSE_MDOC | MPARSE_QUICK;
2816: break;
2817: case ROFF_TH:
2818: tok = MAN_TH;
2819: te = MAN_MAX;
2820: if (r->format == 0)
2821: r->format = MPARSE_MAN;
2822: mask = MPARSE_QUICK;
2823: break;
2824: default:
2825: abort();
2826: }
2827: if ((r->options & mask) == 0)
2828: for (t = tok; t < te; t++)
2829: roff_setstr(r, roff_name[t], NULL, 0);
1.149 schwarze 2830: return ROFF_CONT;
1.14 schwarze 2831: }
2832:
2833: static enum rofferr
1.27 schwarze 2834: roff_TE(ROFF_ARGS)
2835: {
1.193 schwarze 2836: if (r->tbl == NULL) {
1.94 schwarze 2837: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2838: ln, ppos, "TE");
1.193 schwarze 2839: return ROFF_IGN;
2840: }
2841: if (tbl_end(r->tbl) == 0) {
2842: r->tbl = NULL;
1.130 schwarze 2843: free(buf->buf);
2844: buf->buf = mandoc_strdup(".sp");
2845: buf->sz = 4;
1.149 schwarze 2846: return ROFF_REPARSE;
1.130 schwarze 2847: }
1.193 schwarze 2848: r->tbl = NULL;
1.149 schwarze 2849: return ROFF_IGN;
1.27 schwarze 2850: }
2851:
2852: static enum rofferr
2853: roff_T_(ROFF_ARGS)
2854: {
2855:
2856: if (NULL == r->tbl)
1.94 schwarze 2857: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2858: ln, ppos, "T&");
1.27 schwarze 2859: else
1.168 schwarze 2860: tbl_restart(ln, ppos, r->tbl);
1.27 schwarze 2861:
1.149 schwarze 2862: return ROFF_IGN;
1.27 schwarze 2863: }
2864:
1.102 schwarze 2865: /*
2866: * Handle in-line equation delimiters.
2867: */
2868: static enum rofferr
1.110 schwarze 2869: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.41 schwarze 2870: {
1.105 schwarze 2871: char *cp1, *cp2;
2872: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.41 schwarze 2873:
1.102 schwarze 2874: /*
2875: * Outside equations, look for an opening delimiter.
2876: * If we are inside an equation, we already know it is
2877: * in-line, or this function wouldn't have been called;
2878: * so look for a closing delimiter.
2879: */
2880:
1.110 schwarze 2881: cp1 = buf->buf + pos;
1.102 schwarze 2882: cp2 = strchr(cp1, r->eqn == NULL ?
2883: r->last_eqn->odelim : r->last_eqn->cdelim);
2884: if (cp2 == NULL)
1.149 schwarze 2885: return ROFF_CONT;
1.102 schwarze 2886:
1.105 schwarze 2887: *cp2++ = '\0';
2888: bef_pr = bef_nl = aft_nl = aft_pr = "";
2889:
2890: /* Handle preceding text, protecting whitespace. */
2891:
1.110 schwarze 2892: if (*buf->buf != '\0') {
1.105 schwarze 2893: if (r->eqn == NULL)
2894: bef_pr = "\\&";
2895: bef_nl = "\n";
2896: }
2897:
2898: /*
2899: * Prepare replacing the delimiter with an equation macro
2900: * and drop leading white space from the equation.
2901: */
1.102 schwarze 2902:
1.105 schwarze 2903: if (r->eqn == NULL) {
2904: while (*cp2 == ' ')
2905: cp2++;
2906: mac = ".EQ";
2907: } else
2908: mac = ".EN";
2909:
2910: /* Handle following text, protecting whitespace. */
2911:
2912: if (*cp2 != '\0') {
2913: aft_nl = "\n";
2914: if (r->eqn != NULL)
2915: aft_pr = "\\&";
2916: }
2917:
2918: /* Do the actual replacement. */
2919:
1.110 schwarze 2920: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.105 schwarze 2921: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.110 schwarze 2922: free(buf->buf);
2923: buf->buf = cp1;
1.102 schwarze 2924:
2925: /* Toggle the in-line state of the eqn subsystem. */
2926:
2927: r->eqn_inline = r->eqn == NULL;
1.149 schwarze 2928: return ROFF_REPARSE;
1.41 schwarze 2929: }
2930:
1.107 schwarze 2931: static enum rofferr
2932: roff_EQ(ROFF_ARGS)
1.32 schwarze 2933: {
1.191 schwarze 2934: struct roff_node *n;
2935:
1.194 schwarze 2936: if (r->man->macroset == MACROSET_MAN)
2937: man_breakscope(r->man, ROFF_EQ);
1.191 schwarze 2938: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
2939: if (ln > r->man->last->line)
2940: n->flags |= NODE_LINE;
2941: n->eqn = mandoc_calloc(1, sizeof(*n->eqn));
2942: n->eqn->expectargs = UINT_MAX;
2943: roff_node_append(r->man, n);
2944: r->man->next = ROFF_NEXT_SIBLING;
1.32 schwarze 2945:
1.110 schwarze 2946: assert(r->eqn == NULL);
1.191 schwarze 2947: if (r->last_eqn == NULL)
2948: r->last_eqn = eqn_alloc(r->parse);
2949: else
2950: eqn_reset(r->last_eqn);
2951: r->eqn = r->last_eqn;
2952: r->eqn->node = n;
1.41 schwarze 2953:
1.110 schwarze 2954: if (buf->buf[pos] != '\0')
1.107 schwarze 2955: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 2956: ".EQ %s", buf->buf + pos);
1.41 schwarze 2957:
1.149 schwarze 2958: return ROFF_IGN;
1.32 schwarze 2959: }
2960:
2961: static enum rofferr
2962: roff_EN(ROFF_ARGS)
2963: {
1.191 schwarze 2964: if (r->eqn != NULL) {
2965: eqn_parse(r->eqn);
2966: r->eqn = NULL;
2967: } else
2968: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
2969: if (buf->buf[pos] != '\0')
2970: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
2971: "EN %s", buf->buf + pos);
1.149 schwarze 2972: return ROFF_IGN;
1.32 schwarze 2973: }
2974:
2975: static enum rofferr
1.27 schwarze 2976: roff_TS(ROFF_ARGS)
2977: {
1.193 schwarze 2978: if (r->tbl != NULL) {
1.94 schwarze 2979: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
2980: ln, ppos, "TS breaks TS");
1.193 schwarze 2981: tbl_end(r->tbl);
1.27 schwarze 2982: }
1.193 schwarze 2983: r->tbl = tbl_alloc(ppos, ln, r->parse);
1.27 schwarze 2984: if (r->last_tbl)
1.193 schwarze 2985: r->last_tbl->next = r->tbl;
1.27 schwarze 2986: else
1.193 schwarze 2987: r->first_tbl = r->tbl;
2988: r->last_tbl = r->tbl;
1.169 schwarze 2989: return ROFF_IGN;
2990: }
2991:
2992: static enum rofferr
2993: roff_onearg(ROFF_ARGS)
2994: {
2995: struct roff_node *n;
2996: char *cp;
1.177 schwarze 2997: int npos;
1.169 schwarze 2998:
1.174 schwarze 2999: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.192 schwarze 3000: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
3001: tok == ROFF_ti))
1.174 schwarze 3002: man_breakscope(r->man, tok);
3003:
1.181 schwarze 3004: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.177 schwarze 3005: r->man->last = roffce_node;
3006: r->man->next = ROFF_NEXT_SIBLING;
3007: }
3008:
1.169 schwarze 3009: roff_elem_alloc(r->man, ln, ppos, tok);
3010: n = r->man->last;
3011:
3012: cp = buf->buf + pos;
3013: if (*cp != '\0') {
3014: while (*cp != '\0' && *cp != ' ')
3015: cp++;
3016: while (*cp == ' ')
3017: *cp++ = '\0';
3018: if (*cp != '\0')
3019: mandoc_vmsg(MANDOCERR_ARG_EXCESS,
3020: r->parse, ln, cp - buf->buf,
3021: "%s ... %s", roff_name[tok], cp);
3022: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.172 schwarze 3023: }
3024:
1.181 schwarze 3025: if (tok == ROFF_ce || tok == ROFF_rj) {
3026: if (r->man->last->type == ROFFT_ELEM) {
1.177 schwarze 3027: roff_word_alloc(r->man, ln, pos, "1");
3028: r->man->last->flags |= NODE_NOSRC;
3029: }
3030: npos = 0;
3031: if (roff_evalnum(r, ln, r->man->last->string, &npos,
3032: &roffce_lines, 0) == 0) {
3033: mandoc_vmsg(MANDOCERR_CE_NONUM,
3034: r->parse, ln, pos, "ce %s", buf->buf + pos);
3035: roffce_lines = 1;
3036: }
3037: if (roffce_lines < 1) {
3038: r->man->last = r->man->last->parent;
3039: roffce_node = NULL;
3040: roffce_lines = 0;
3041: } else
3042: roffce_node = r->man->last->parent;
3043: } else {
3044: n->flags |= NODE_VALID | NODE_ENDED;
3045: r->man->last = n;
3046: }
3047: n->flags |= NODE_LINE;
1.172 schwarze 3048: r->man->next = ROFF_NEXT_SIBLING;
3049: return ROFF_IGN;
3050: }
3051:
3052: static enum rofferr
3053: roff_manyarg(ROFF_ARGS)
3054: {
3055: struct roff_node *n;
3056: char *sp, *ep;
3057:
3058: roff_elem_alloc(r->man, ln, ppos, tok);
3059: n = r->man->last;
3060:
3061: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3062: while (*ep != '\0' && *ep != ' ')
3063: ep++;
3064: while (*ep == ' ')
3065: *ep++ = '\0';
3066: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.169 schwarze 3067: }
3068:
3069: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3070: r->man->last = n;
3071: r->man->next = ROFF_NEXT_SIBLING;
1.149 schwarze 3072: return ROFF_IGN;
1.123 schwarze 3073: }
3074:
3075: static enum rofferr
1.183 schwarze 3076: roff_als(ROFF_ARGS)
3077: {
3078: char *oldn, *newn, *end, *value;
3079: size_t oldsz, newsz, valsz;
3080:
3081: newn = oldn = buf->buf + pos;
3082: if (*newn == '\0')
3083: return ROFF_IGN;
3084:
3085: newsz = roff_getname(r, &oldn, ln, pos);
3086: if (newn[newsz] == '\\' || *oldn == '\0')
3087: return ROFF_IGN;
3088:
3089: end = oldn;
3090: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3091: if (oldsz == 0)
3092: return ROFF_IGN;
3093:
1.187 schwarze 3094: valsz = mandoc_asprintf(&value, ".%.*s \\$*\\\"\n",
3095: (int)oldsz, oldn);
1.183 schwarze 3096: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3097: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3098: free(value);
3099: return ROFF_IGN;
3100: }
3101:
3102: static enum rofferr
1.168 schwarze 3103: roff_br(ROFF_ARGS)
1.123 schwarze 3104: {
1.174 schwarze 3105: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3106: man_breakscope(r->man, ROFF_br);
1.168 schwarze 3107: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
3108: if (buf->buf[pos] != '\0')
3109: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
3110: "%s %s", roff_name[tok], buf->buf + pos);
3111: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3112: r->man->next = ROFF_NEXT_SIBLING;
3113: return ROFF_IGN;
1.27 schwarze 3114: }
3115:
3116: static enum rofferr
1.48 schwarze 3117: roff_cc(ROFF_ARGS)
3118: {
3119: const char *p;
3120:
1.110 schwarze 3121: p = buf->buf + pos;
1.48 schwarze 3122:
1.110 schwarze 3123: if (*p == '\0' || (r->control = *p++) == '.')
1.175 schwarze 3124: r->control = '\0';
1.48 schwarze 3125:
1.110 schwarze 3126: if (*p != '\0')
1.132 schwarze 3127: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3128: ln, p - buf->buf, "cc ... %s", p);
1.48 schwarze 3129:
1.149 schwarze 3130: return ROFF_IGN;
1.48 schwarze 3131: }
3132:
3133: static enum rofferr
1.175 schwarze 3134: roff_ec(ROFF_ARGS)
3135: {
3136: const char *p;
3137:
3138: p = buf->buf + pos;
3139: if (*p == '\0')
3140: r->escape = '\\';
3141: else {
3142: r->escape = *p;
3143: if (*++p != '\0')
3144: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3145: ln, p - buf->buf, "ec ... %s", p);
3146: }
3147: return ROFF_IGN;
3148: }
3149:
3150: static enum rofferr
3151: roff_eo(ROFF_ARGS)
3152: {
3153: r->escape = '\0';
3154: if (buf->buf[pos] != '\0')
3155: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse,
3156: ln, pos, "eo %s", buf->buf + pos);
3157: return ROFF_IGN;
3158: }
3159:
3160: static enum rofferr
1.42 schwarze 3161: roff_tr(ROFF_ARGS)
3162: {
3163: const char *p, *first, *second;
3164: size_t fsz, ssz;
3165: enum mandoc_esc esc;
3166:
1.110 schwarze 3167: p = buf->buf + pos;
1.42 schwarze 3168:
1.110 schwarze 3169: if (*p == '\0') {
1.132 schwarze 3170: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.149 schwarze 3171: return ROFF_IGN;
1.42 schwarze 3172: }
3173:
1.110 schwarze 3174: while (*p != '\0') {
1.42 schwarze 3175: fsz = ssz = 1;
3176:
3177: first = p++;
1.110 schwarze 3178: if (*first == '\\') {
1.42 schwarze 3179: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3180: if (esc == ESCAPE_ERROR) {
1.92 schwarze 3181: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 3182: ln, (int)(p - buf->buf), first);
1.149 schwarze 3183: return ROFF_IGN;
1.42 schwarze 3184: }
3185: fsz = (size_t)(p - first);
3186: }
3187:
3188: second = p++;
1.110 schwarze 3189: if (*second == '\\') {
1.42 schwarze 3190: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3191: if (esc == ESCAPE_ERROR) {
1.92 schwarze 3192: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 3193: ln, (int)(p - buf->buf), second);
1.149 schwarze 3194: return ROFF_IGN;
1.42 schwarze 3195: }
3196: ssz = (size_t)(p - second);
1.110 schwarze 3197: } else if (*second == '\0') {
1.132 schwarze 3198: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
3199: ln, first - buf->buf, "tr %s", first);
1.42 schwarze 3200: second = " ";
3201: p--;
3202: }
3203:
3204: if (fsz > 1) {
1.80 schwarze 3205: roff_setstrn(&r->xmbtab, first, fsz,
3206: second, ssz, 0);
1.42 schwarze 3207: continue;
3208: }
3209:
1.110 schwarze 3210: if (r->xtab == NULL)
1.80 schwarze 3211: r->xtab = mandoc_calloc(128,
3212: sizeof(struct roffstr));
1.42 schwarze 3213:
3214: free(r->xtab[(int)*first].p);
3215: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3216: r->xtab[(int)*first].sz = ssz;
3217: }
3218:
1.149 schwarze 3219: return ROFF_IGN;
1.42 schwarze 3220: }
3221:
3222: static enum rofferr
1.178 schwarze 3223: roff_rn(ROFF_ARGS)
3224: {
3225: const char *value;
3226: char *oldn, *newn, *end;
3227: size_t oldsz, newsz;
1.187 schwarze 3228: int deftype;
1.178 schwarze 3229:
3230: oldn = newn = buf->buf + pos;
3231: if (*oldn == '\0')
3232: return ROFF_IGN;
3233:
3234: oldsz = roff_getname(r, &newn, ln, pos);
3235: if (oldn[oldsz] == '\\' || *newn == '\0')
3236: return ROFF_IGN;
3237:
3238: end = newn;
3239: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3240: if (newsz == 0)
3241: return ROFF_IGN;
3242:
1.187 schwarze 3243: deftype = ROFFDEF_ANY;
3244: value = roff_getstrn(r, oldn, oldsz, &deftype);
3245: switch (deftype) {
3246: case ROFFDEF_USER:
1.178 schwarze 3247: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3248: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3249: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.187 schwarze 3250: break;
3251: case ROFFDEF_PRE:
3252: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3253: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3254: break;
3255: case ROFFDEF_REN:
1.178 schwarze 3256: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3257: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.187 schwarze 3258: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3259: break;
3260: case ROFFDEF_STD:
1.178 schwarze 3261: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.187 schwarze 3262: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3263: break;
3264: default:
3265: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3266: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3267: break;
3268: }
1.178 schwarze 3269: return ROFF_IGN;
3270: }
3271:
3272: static enum rofferr
1.14 schwarze 3273: roff_so(ROFF_ARGS)
3274: {
1.121 schwarze 3275: char *name, *cp;
1.15 schwarze 3276:
1.110 schwarze 3277: name = buf->buf + pos;
1.97 schwarze 3278: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.14 schwarze 3279:
1.22 schwarze 3280: /*
3281: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3282: * opening anything that's not in our cwd or anything beneath
3283: * it. Thus, explicitly disallow traversing up the file-system
3284: * or using absolute paths.
3285: */
3286:
1.110 schwarze 3287: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.83 schwarze 3288: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
3289: ".so %s", name);
1.121 schwarze 3290: buf->sz = mandoc_asprintf(&cp,
3291: ".sp\nSee the file %s.\n.sp", name) + 1;
3292: free(buf->buf);
3293: buf->buf = cp;
3294: *offs = 0;
1.149 schwarze 3295: return ROFF_REPARSE;
1.14 schwarze 3296: }
3297:
3298: *offs = pos;
1.149 schwarze 3299: return ROFF_SO;
1.7 schwarze 3300: }
3301:
1.138 schwarze 3302: /* --- user defined strings and macros ------------------------------------ */
3303:
1.16 schwarze 3304: static enum rofferr
3305: roff_userdef(ROFF_ARGS)
1.12 schwarze 3306: {
1.183 schwarze 3307: const char *arg[16], *ap;
1.16 schwarze 3308: char *cp, *n1, *n2;
1.164 schwarze 3309: int expand_count, i, ib, ie;
1.135 schwarze 3310: size_t asz, rsz;
1.12 schwarze 3311:
1.16 schwarze 3312: /*
3313: * Collect pointers to macro argument strings
1.61 schwarze 3314: * and NUL-terminate them.
1.16 schwarze 3315: */
1.135 schwarze 3316:
1.145 schwarze 3317: r->argc = 0;
1.110 schwarze 3318: cp = buf->buf + pos;
1.183 schwarze 3319: for (i = 0; i < 16; i++) {
1.145 schwarze 3320: if (*cp == '\0')
3321: arg[i] = "";
3322: else {
3323: arg[i] = mandoc_getarg(r->parse, &cp, ln, &pos);
3324: r->argc = i + 1;
3325: }
3326: }
1.16 schwarze 3327:
3328: /*
3329: * Expand macro arguments.
1.12 schwarze 3330: */
1.135 schwarze 3331:
3332: buf->sz = strlen(r->current_string) + 1;
1.164 schwarze 3333: n1 = n2 = cp = mandoc_malloc(buf->sz);
1.135 schwarze 3334: memcpy(n1, r->current_string, buf->sz);
1.164 schwarze 3335: expand_count = 0;
1.135 schwarze 3336: while (*cp != '\0') {
3337:
3338: /* Scan ahead for the next argument invocation. */
3339:
3340: if (*cp++ != '\\')
3341: continue;
3342: if (*cp++ != '$')
3343: continue;
1.146 schwarze 3344: if (*cp == '*') { /* \\$* inserts all arguments */
3345: ib = 0;
3346: ie = r->argc - 1;
3347: } else { /* \\$1 .. \\$9 insert one argument */
3348: ib = ie = *cp - '1';
3349: if (ib < 0 || ib > 8)
3350: continue;
3351: }
1.135 schwarze 3352: cp -= 2;
1.164 schwarze 3353:
3354: /*
3355: * Prevent infinite recursion.
3356: */
3357:
3358: if (cp >= n2)
3359: expand_count = 1;
3360: else if (++expand_count > EXPAND_LIMIT) {
3361: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
3362: ln, (int)(cp - n1), NULL);
1.165 schwarze 3363: free(buf->buf);
3364: buf->buf = n1;
1.164 schwarze 3365: return ROFF_IGN;
3366: }
1.135 schwarze 3367:
3368: /*
3369: * Determine the size of the expanded argument,
3370: * taking escaping of quotes into account.
3371: */
3372:
1.146 schwarze 3373: asz = ie > ib ? ie - ib : 0; /* for blanks */
3374: for (i = ib; i <= ie; i++) {
3375: for (ap = arg[i]; *ap != '\0'; ap++) {
3376: asz++;
3377: if (*ap == '"')
3378: asz += 3;
3379: }
1.135 schwarze 3380: }
3381: if (asz != 3) {
3382:
3383: /*
3384: * Determine the size of the rest of the
3385: * unexpanded macro, including the NUL.
3386: */
3387:
3388: rsz = buf->sz - (cp - n1) - 3;
3389:
3390: /*
3391: * When shrinking, move before
3392: * releasing the storage.
3393: */
3394:
3395: if (asz < 3)
3396: memmove(cp + asz, cp + 3, rsz);
3397:
3398: /*
3399: * Resize the storage for the macro
3400: * and readjust the parse pointer.
3401: */
3402:
3403: buf->sz += asz - 3;
3404: n2 = mandoc_realloc(n1, buf->sz);
3405: cp = n2 + (cp - n1);
3406: n1 = n2;
3407:
3408: /*
3409: * When growing, make room
3410: * for the expanded argument.
3411: */
3412:
3413: if (asz > 3)
3414: memmove(cp + asz, cp + 3, rsz);
3415: }
3416:
3417: /* Copy the expanded argument, escaping quotes. */
3418:
3419: n2 = cp;
1.146 schwarze 3420: for (i = ib; i <= ie; i++) {
3421: for (ap = arg[i]; *ap != '\0'; ap++) {
3422: if (*ap == '"') {
3423: memcpy(n2, "\\(dq", 4);
3424: n2 += 4;
3425: } else
3426: *n2++ = *ap;
3427: }
3428: if (i < ie)
3429: *n2++ = ' ';
1.16 schwarze 3430: }
1.12 schwarze 3431: }
3432:
1.16 schwarze 3433: /*
3434: * Replace the macro invocation
3435: * by the expanded macro.
3436: */
1.135 schwarze 3437:
1.110 schwarze 3438: free(buf->buf);
3439: buf->buf = n1;
1.120 schwarze 3440: *offs = 0;
1.16 schwarze 3441:
1.149 schwarze 3442: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
3443: ROFF_REPARSE : ROFF_APPEND;
1.12 schwarze 3444: }
1.28 schwarze 3445:
1.178 schwarze 3446: /*
3447: * Calling a high-level macro that was renamed with .rn.
3448: * r->current_string has already been set up by roff_parse().
3449: */
3450: static enum rofferr
3451: roff_renamed(ROFF_ARGS)
3452: {
3453: char *nbuf;
3454:
1.187 schwarze 3455: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
3456: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.178 schwarze 3457: free(buf->buf);
3458: buf->buf = nbuf;
3459: return ROFF_CONT;
3460: }
3461:
1.85 schwarze 3462: static size_t
1.28 schwarze 3463: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3464: {
3465: char *name, *cp;
1.85 schwarze 3466: size_t namesz;
1.28 schwarze 3467:
3468: name = *cpp;
3469: if ('\0' == *name)
1.149 schwarze 3470: return 0;
1.28 schwarze 3471:
1.85 schwarze 3472: /* Read until end of name and terminate it with NUL. */
3473: for (cp = name; 1; cp++) {
3474: if ('\0' == *cp || ' ' == *cp) {
3475: namesz = cp - name;
3476: break;
3477: }
1.28 schwarze 3478: if ('\\' != *cp)
3479: continue;
1.88 schwarze 3480: namesz = cp - name;
3481: if ('{' == cp[1] || '}' == cp[1])
3482: break;
1.28 schwarze 3483: cp++;
3484: if ('\\' == *cp)
3485: continue;
1.97 schwarze 3486: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3487: "%.*s", (int)(cp - name + 1), name);
1.85 schwarze 3488: mandoc_escape((const char **)&cp, NULL, NULL);
3489: break;
1.28 schwarze 3490: }
3491:
3492: /* Read past spaces. */
3493: while (' ' == *cp)
3494: cp++;
3495:
3496: *cpp = cp;
1.149 schwarze 3497: return namesz;
1.28 schwarze 3498: }
3499:
1.16 schwarze 3500: /*
3501: * Store *string into the user-defined string called *name.
3502: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.66 schwarze 3503: * append == 0: replace mode
3504: * append == 1: single-line append mode
3505: * append == 2: multiline append mode, append '\n' after each call
1.16 schwarze 3506: */
1.8 schwarze 3507: static void
1.16 schwarze 3508: roff_setstr(struct roff *r, const char *name, const char *string,
1.66 schwarze 3509: int append)
1.7 schwarze 3510: {
1.187 schwarze 3511: size_t namesz;
1.42 schwarze 3512:
1.187 schwarze 3513: namesz = strlen(name);
3514: roff_setstrn(&r->strtab, name, namesz, string,
1.80 schwarze 3515: string ? strlen(string) : 0, append);
1.187 schwarze 3516: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.42 schwarze 3517: }
3518:
3519: static void
3520: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.66 schwarze 3521: const char *string, size_t stringsz, int append)
1.42 schwarze 3522: {
3523: struct roffkv *n;
3524: char *c;
3525: int i;
3526: size_t oldch, newch;
1.7 schwarze 3527:
1.16 schwarze 3528: /* Search for an existing string with the same name. */
1.42 schwarze 3529: n = *r;
3530:
1.84 schwarze 3531: while (n && (namesz != n->key.sz ||
3532: strncmp(n->key.p, name, namesz)))
1.7 schwarze 3533: n = n->next;
1.8 schwarze 3534:
3535: if (NULL == n) {
1.16 schwarze 3536: /* Create a new string table entry. */
1.42 schwarze 3537: n = mandoc_malloc(sizeof(struct roffkv));
3538: n->key.p = mandoc_strndup(name, namesz);
3539: n->key.sz = namesz;
3540: n->val.p = NULL;
3541: n->val.sz = 0;
3542: n->next = *r;
3543: *r = n;
1.66 schwarze 3544: } else if (0 == append) {
1.42 schwarze 3545: free(n->val.p);
3546: n->val.p = NULL;
3547: n->val.sz = 0;
1.16 schwarze 3548: }
3549:
3550: if (NULL == string)
3551: return;
3552:
3553: /*
3554: * One additional byte for the '\n' in multiline mode,
3555: * and one for the terminating '\0'.
3556: */
1.66 schwarze 3557: newch = stringsz + (1 < append ? 2u : 1u);
1.42 schwarze 3558:
3559: if (NULL == n->val.p) {
3560: n->val.p = mandoc_malloc(newch);
3561: *n->val.p = '\0';
1.16 schwarze 3562: oldch = 0;
3563: } else {
1.42 schwarze 3564: oldch = n->val.sz;
3565: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.16 schwarze 3566: }
3567:
3568: /* Skip existing content in the destination buffer. */
1.42 schwarze 3569: c = n->val.p + (int)oldch;
1.16 schwarze 3570:
3571: /* Append new content to the destination buffer. */
1.42 schwarze 3572: i = 0;
3573: while (i < (int)stringsz) {
1.16 schwarze 3574: /*
3575: * Rudimentary roff copy mode:
3576: * Handle escaped backslashes.
3577: */
1.42 schwarze 3578: if ('\\' == string[i] && '\\' == string[i + 1])
3579: i++;
3580: *c++ = string[i++];
1.16 schwarze 3581: }
1.8 schwarze 3582:
1.16 schwarze 3583: /* Append terminating bytes. */
1.66 schwarze 3584: if (1 < append)
1.16 schwarze 3585: *c++ = '\n';
1.42 schwarze 3586:
1.16 schwarze 3587: *c = '\0';
1.42 schwarze 3588: n->val.sz = (int)(c - n->val.p);
1.7 schwarze 3589: }
3590:
1.8 schwarze 3591: static const char *
1.197 schwarze 3592: roff_getstrn(struct roff *r, const char *name, size_t len,
1.187 schwarze 3593: int *deftype)
1.7 schwarze 3594: {
1.187 schwarze 3595: const struct roffkv *n;
1.197 schwarze 3596: int found, i;
1.187 schwarze 3597: enum roff_tok tok;
3598:
1.197 schwarze 3599: found = 0;
3600: for (n = r->strtab; n != NULL; n = n->next) {
3601: if (strncmp(name, n->key.p, len) != 0 ||
3602: n->key.p[len] != '\0' || n->val.p == NULL)
3603: continue;
3604: if (*deftype & ROFFDEF_USER) {
3605: *deftype = ROFFDEF_USER;
3606: return n->val.p;
3607: } else {
3608: found = 1;
3609: break;
3610: }
3611: }
3612: for (n = r->rentab; n != NULL; n = n->next) {
3613: if (strncmp(name, n->key.p, len) != 0 ||
3614: n->key.p[len] != '\0' || n->val.p == NULL)
3615: continue;
3616: if (*deftype & ROFFDEF_REN) {
3617: *deftype = ROFFDEF_REN;
3618: return n->val.p;
3619: } else {
3620: found = 1;
3621: break;
1.187 schwarze 3622: }
3623: }
1.197 schwarze 3624: for (i = 0; i < PREDEFS_MAX; i++) {
3625: if (strncmp(name, predefs[i].name, len) != 0 ||
3626: predefs[i].name[len] != '\0')
3627: continue;
3628: if (*deftype & ROFFDEF_PRE) {
3629: *deftype = ROFFDEF_PRE;
3630: return predefs[i].str;
3631: } else {
3632: found = 1;
3633: break;
1.187 schwarze 3634: }
3635: }
1.197 schwarze 3636: if (r->man->macroset != MACROSET_MAN) {
3637: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
3638: if (strncmp(name, roff_name[tok], len) != 0 ||
3639: roff_name[tok][len] != '\0')
3640: continue;
3641: if (*deftype & ROFFDEF_STD) {
3642: *deftype = ROFFDEF_STD;
3643: return NULL;
3644: } else {
3645: found = 1;
3646: break;
1.187 schwarze 3647: }
3648: }
3649: }
1.197 schwarze 3650: if (r->man->macroset != MACROSET_MDOC) {
3651: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
3652: if (strncmp(name, roff_name[tok], len) != 0 ||
3653: roff_name[tok][len] != '\0')
3654: continue;
3655: if (*deftype & ROFFDEF_STD) {
3656: *deftype = ROFFDEF_STD;
3657: return NULL;
3658: } else {
3659: found = 1;
3660: break;
1.187 schwarze 3661: }
3662: }
1.197 schwarze 3663: }
3664:
3665: if (found == 0 && *deftype != ROFFDEF_ANY) {
3666: if (*deftype & ROFFDEF_REN) {
3667: /*
3668: * This might still be a request,
3669: * so do not treat it as undefined yet.
3670: */
3671: *deftype = ROFFDEF_UNDEF;
3672: return NULL;
1.187 schwarze 3673: }
1.197 schwarze 3674:
3675: /* Using an undefined string defines it to be empty. */
3676:
3677: roff_setstrn(&r->strtab, name, len, "", 0, 0);
3678: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.187 schwarze 3679: }
1.197 schwarze 3680:
1.187 schwarze 3681: *deftype = 0;
1.149 schwarze 3682: return NULL;
1.7 schwarze 3683: }
3684:
1.8 schwarze 3685: static void
1.42 schwarze 3686: roff_freestr(struct roffkv *r)
1.7 schwarze 3687: {
1.42 schwarze 3688: struct roffkv *n, *nn;
1.7 schwarze 3689:
1.42 schwarze 3690: for (n = r; n; n = nn) {
3691: free(n->key.p);
3692: free(n->val.p);
1.7 schwarze 3693: nn = n->next;
3694: free(n);
3695: }
1.27 schwarze 3696: }
1.138 schwarze 3697:
3698: /* --- accessors and utility functions ------------------------------------ */
1.42 schwarze 3699:
3700: /*
3701: * Duplicate an input string, making the appropriate character
3702: * conversations (as stipulated by `tr') along the way.
3703: * Returns a heap-allocated string with all the replacements made.
3704: */
3705: char *
3706: roff_strdup(const struct roff *r, const char *p)
3707: {
3708: const struct roffkv *cp;
3709: char *res;
3710: const char *pp;
3711: size_t ssz, sz;
3712: enum mandoc_esc esc;
3713:
3714: if (NULL == r->xmbtab && NULL == r->xtab)
1.149 schwarze 3715: return mandoc_strdup(p);
1.42 schwarze 3716: else if ('\0' == *p)
1.149 schwarze 3717: return mandoc_strdup("");
1.42 schwarze 3718:
3719: /*
3720: * Step through each character looking for term matches
3721: * (remember that a `tr' can be invoked with an escape, which is
3722: * a glyph but the escape is multi-character).
3723: * We only do this if the character hash has been initialised
3724: * and the string is >0 length.
3725: */
3726:
3727: res = NULL;
3728: ssz = 0;
3729:
3730: while ('\0' != *p) {
1.161 schwarze 3731: assert((unsigned int)*p < 128);
3732: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.42 schwarze 3733: sz = r->xtab[(int)*p].sz;
3734: res = mandoc_realloc(res, ssz + sz + 1);
3735: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3736: ssz += sz;
3737: p++;
3738: continue;
3739: } else if ('\\' != *p) {
3740: res = mandoc_realloc(res, ssz + 2);
3741: res[ssz++] = *p++;
3742: continue;
3743: }
3744:
3745: /* Search for term matches. */
3746: for (cp = r->xmbtab; cp; cp = cp->next)
3747: if (0 == strncmp(p, cp->key.p, cp->key.sz))
3748: break;
3749:
3750: if (NULL != cp) {
3751: /*
3752: * A match has been found.
3753: * Append the match to the array and move
3754: * forward by its keysize.
3755: */
1.80 schwarze 3756: res = mandoc_realloc(res,
3757: ssz + cp->val.sz + 1);
1.42 schwarze 3758: memcpy(res + ssz, cp->val.p, cp->val.sz);
3759: ssz += cp->val.sz;
3760: p += (int)cp->key.sz;
3761: continue;
3762: }
3763:
3764: /*
3765: * Handle escapes carefully: we need to copy
3766: * over just the escape itself, or else we might
3767: * do replacements within the escape itself.
3768: * Make sure to pass along the bogus string.
3769: */
3770: pp = p++;
3771: esc = mandoc_escape(&p, NULL, NULL);
3772: if (ESCAPE_ERROR == esc) {
3773: sz = strlen(pp);
3774: res = mandoc_realloc(res, ssz + sz + 1);
3775: memcpy(res + ssz, pp, sz);
3776: break;
3777: }
1.80 schwarze 3778: /*
3779: * We bail out on bad escapes.
1.42 schwarze 3780: * No need to warn: we already did so when
3781: * roff_res() was called.
3782: */
3783: sz = (int)(p - pp);
3784: res = mandoc_realloc(res, ssz + sz + 1);
3785: memcpy(res + ssz, pp, sz);
3786: ssz += sz;
3787: }
3788:
3789: res[(int)ssz] = '\0';
1.149 schwarze 3790: return res;
1.99 schwarze 3791: }
3792:
3793: int
3794: roff_getformat(const struct roff *r)
3795: {
3796:
1.149 schwarze 3797: return r->format;
1.48 schwarze 3798: }
3799:
3800: /*
1.80 schwarze 3801: * Find out whether a line is a macro line or not.
1.48 schwarze 3802: * If it is, adjust the current position and return one; if it isn't,
3803: * return zero and don't change the current position.
3804: * If the control character has been set with `.cc', then let that grain
3805: * precedence.
3806: * This is slighly contrary to groff, where using the non-breaking
3807: * control character when `cc' has been invoked will cause the
3808: * non-breaking macro contents to be printed verbatim.
3809: */
3810: int
3811: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
3812: {
3813: int pos;
3814:
3815: pos = *ppos;
3816:
1.175 schwarze 3817: if (r->control != '\0' && cp[pos] == r->control)
1.48 schwarze 3818: pos++;
1.175 schwarze 3819: else if (r->control != '\0')
1.149 schwarze 3820: return 0;
1.48 schwarze 3821: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
3822: pos += 2;
3823: else if ('.' == cp[pos] || '\'' == cp[pos])
3824: pos++;
3825: else
1.149 schwarze 3826: return 0;
1.48 schwarze 3827:
3828: while (' ' == cp[pos] || '\t' == cp[pos])
3829: pos++;
3830:
3831: *ppos = pos;
1.149 schwarze 3832: return 1;
1.1 schwarze 3833: }
![[BACK]](/icons/back.gif){kind=icon}
Return to roff.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / mandoc