Annotation of src/usr.bin/mandoc/roff.c, Revision 1.177
1.177 ! schwarze 1: /* $OpenBSD: roff.c,v 1.176 2017/06/04 22:43:50 schwarze Exp $ */
1.1 schwarze 2: /*
1.139 schwarze 3: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.159 schwarze 4: * Copyright (c) 2010-2015, 2017 Ingo Schwarze <schwarze@openbsd.org>
1.1 schwarze 5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
1.16 schwarze 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.1 schwarze 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.16 schwarze 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.1 schwarze 13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
1.99 schwarze 18: #include <sys/types.h>
19:
1.1 schwarze 20: #include <assert.h>
1.3 schwarze 21: #include <ctype.h>
1.117 schwarze 22: #include <limits.h>
1.167 schwarze 23: #include <stddef.h>
24: #include <stdint.h>
1.51 schwarze 25: #include <stdio.h>
1.1 schwarze 26: #include <stdlib.h>
27: #include <string.h>
28:
29: #include "mandoc.h"
1.74 schwarze 30: #include "mandoc_aux.h"
1.167 schwarze 31: #include "mandoc_ohash.h"
1.137 schwarze 32: #include "roff.h"
1.98 daniel 33: #include "libmandoc.h"
1.138 schwarze 34: #include "roff_int.h"
1.27 schwarze 35: #include "libroff.h"
1.2 schwarze 36:
1.43 schwarze 37: /* Maximum number of string expansions per line, to break infinite loops. */
38: #define EXPAND_LIMIT 1000
39:
1.138 schwarze 40: /* --- data types --------------------------------------------------------- */
41:
1.41 schwarze 42: /*
1.42 schwarze 43: * An incredibly-simple string buffer.
44: */
1.8 schwarze 45: struct roffstr {
1.42 schwarze 46: char *p; /* nil-terminated buffer */
47: size_t sz; /* saved strlen(p) */
48: };
49:
50: /*
51: * A key-value roffstr pair as part of a singly-linked list.
52: */
53: struct roffkv {
54: struct roffstr key;
55: struct roffstr val;
56: struct roffkv *next; /* next in list */
1.8 schwarze 57: };
58:
1.52 schwarze 59: /*
60: * A single number register as part of a singly-linked list.
61: */
62: struct roffreg {
63: struct roffstr key;
1.53 schwarze 64: int val;
1.52 schwarze 65: struct roffreg *next;
66: };
67:
1.167 schwarze 68: /*
69: * Association of request and macro names with token IDs.
70: */
71: struct roffreq {
72: enum roff_tok tok;
73: char name[];
74: };
75:
1.1 schwarze 76: struct roff {
1.35 schwarze 77: struct mparse *parse; /* parse point */
1.168 schwarze 78: struct roff_man *man; /* mdoc or man parser */
1.1 schwarze 79: struct roffnode *last; /* leaf of stack */
1.96 schwarze 80: int *rstack; /* stack of inverted `ie' values */
1.167 schwarze 81: struct ohash *reqtab; /* request lookup table */
1.52 schwarze 82: struct roffreg *regtab; /* number registers */
1.42 schwarze 83: struct roffkv *strtab; /* user-defined strings & macros */
84: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
85: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.16 schwarze 86: const char *current_string; /* value of last called user macro */
1.27 schwarze 87: struct tbl_node *first_tbl; /* first table parsed */
88: struct tbl_node *last_tbl; /* last table parsed */
89: struct tbl_node *tbl; /* current table being parsed */
1.32 schwarze 90: struct eqn_node *last_eqn; /* last equation parsed */
91: struct eqn_node *first_eqn; /* first equation parsed */
92: struct eqn_node *eqn; /* current equation being parsed */
1.102 schwarze 93: int eqn_inline; /* current equation is inline */
1.96 schwarze 94: int options; /* parse options */
95: int rstacksz; /* current size limit of rstack */
96: int rstackpos; /* position in rstack */
1.99 schwarze 97: int format; /* current file in mdoc or man format */
1.145 schwarze 98: int argc; /* number of args of the last macro */
1.96 schwarze 99: char control; /* control character */
1.175 schwarze 100: char escape; /* escape character */
1.1 schwarze 101: };
102:
103: struct roffnode {
1.166 schwarze 104: enum roff_tok tok; /* type of node */
1.1 schwarze 105: struct roffnode *parent; /* up one in stack */
106: int line; /* parse line */
107: int col; /* parse col */
1.16 schwarze 108: char *name; /* node name, e.g. macro name */
1.2 schwarze 109: char *end; /* end-rules: custom token */
110: int endspan; /* end-rules: next-line or infty */
1.71 schwarze 111: int rule; /* current evaluation rule */
1.1 schwarze 112: };
113:
114: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.166 schwarze 115: enum roff_tok tok, /* tok of macro */ \
1.110 schwarze 116: struct buf *buf, /* input buffer */ \
1.1 schwarze 117: int ln, /* parse line */ \
1.2 schwarze 118: int ppos, /* original pos in buffer */ \
119: int pos, /* current pos in buffer */ \
120: int *offs /* reset offset of buffer data */
1.1 schwarze 121:
122: typedef enum rofferr (*roffproc)(ROFF_ARGS);
123:
124: struct roffmac {
1.2 schwarze 125: roffproc proc; /* process new macro */
126: roffproc text; /* process as child text of macro */
127: roffproc sub; /* process as child of macro */
128: int flags;
129: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.1 schwarze 130: };
131:
1.37 schwarze 132: struct predef {
133: const char *name; /* predefined input name */
134: const char *str; /* replacement symbol */
135: };
136:
137: #define PREDEF(__name, __str) \
138: { (__name), (__str) },
139:
1.138 schwarze 140: /* --- function prototypes ------------------------------------------------ */
141:
1.42 schwarze 142: static void roffnode_cleanscope(struct roff *);
143: static void roffnode_pop(struct roff *);
1.166 schwarze 144: static void roffnode_push(struct roff *, enum roff_tok,
1.42 schwarze 145: const char *, int, int);
1.2 schwarze 146: static enum rofferr roff_block(ROFF_ARGS);
147: static enum rofferr roff_block_text(ROFF_ARGS);
148: static enum rofferr roff_block_sub(ROFF_ARGS);
1.168 schwarze 149: static enum rofferr roff_br(ROFF_ARGS);
1.2 schwarze 150: static enum rofferr roff_cblock(ROFF_ARGS);
1.48 schwarze 151: static enum rofferr roff_cc(ROFF_ARGS);
1.68 schwarze 152: static void roff_ccond(struct roff *, int, int);
1.2 schwarze 153: static enum rofferr roff_cond(ROFF_ARGS);
154: static enum rofferr roff_cond_text(ROFF_ARGS);
155: static enum rofferr roff_cond_sub(ROFF_ARGS);
1.7 schwarze 156: static enum rofferr roff_ds(ROFF_ARGS);
1.175 schwarze 157: static enum rofferr roff_ec(ROFF_ARGS);
158: static enum rofferr roff_eo(ROFF_ARGS);
1.110 schwarze 159: static enum rofferr roff_eqndelim(struct roff *, struct buf *, int);
1.143 schwarze 160: static int roff_evalcond(struct roff *r, int, char *, int *);
1.106 schwarze 161: static int roff_evalnum(struct roff *, int,
162: const char *, int *, int *, int);
163: static int roff_evalpar(struct roff *, int,
1.133 schwarze 164: const char *, int *, int *, int);
1.71 schwarze 165: static int roff_evalstrcond(const char *, int *);
1.42 schwarze 166: static void roff_free1(struct roff *);
1.52 schwarze 167: static void roff_freereg(struct roffreg *);
1.42 schwarze 168: static void roff_freestr(struct roffkv *);
1.85 schwarze 169: static size_t roff_getname(struct roff *, char **, int, int);
1.133 schwarze 170: static int roff_getnum(const char *, int *, int *, int);
1.56 schwarze 171: static int roff_getop(const char *, int *, char *);
1.53 schwarze 172: static int roff_getregn(const struct roff *,
173: const char *, size_t);
1.145 schwarze 174: static int roff_getregro(const struct roff *,
175: const char *name);
1.80 schwarze 176: static const char *roff_getstrn(const struct roff *,
1.8 schwarze 177: const char *, size_t);
1.143 schwarze 178: static int roff_hasregn(const struct roff *,
179: const char *, size_t);
1.123 schwarze 180: static enum rofferr roff_insec(ROFF_ARGS);
1.51 schwarze 181: static enum rofferr roff_it(ROFF_ARGS);
1.21 schwarze 182: static enum rofferr roff_line_ignore(ROFF_ARGS);
1.137 schwarze 183: static void roff_man_alloc1(struct roff_man *);
184: static void roff_man_free1(struct roff_man *);
1.172 schwarze 185: static enum rofferr roff_manyarg(ROFF_ARGS);
1.6 schwarze 186: static enum rofferr roff_nr(ROFF_ARGS);
1.169 schwarze 187: static enum rofferr roff_onearg(ROFF_ARGS);
1.166 schwarze 188: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.87 schwarze 189: int, int);
1.177 ! schwarze 190: static enum rofferr roff_parsetext(struct roff *, struct buf *,
! 191: int, int *);
1.110 schwarze 192: static enum rofferr roff_res(struct roff *, struct buf *, int, int);
1.29 schwarze 193: static enum rofferr roff_rm(ROFF_ARGS);
1.76 schwarze 194: static enum rofferr roff_rr(ROFF_ARGS);
1.8 schwarze 195: static void roff_setstr(struct roff *,
1.16 schwarze 196: const char *, const char *, int);
1.80 schwarze 197: static void roff_setstrn(struct roffkv **, const char *,
1.42 schwarze 198: size_t, const char *, size_t, int);
1.14 schwarze 199: static enum rofferr roff_so(ROFF_ARGS);
1.42 schwarze 200: static enum rofferr roff_tr(ROFF_ARGS);
1.47 schwarze 201: static enum rofferr roff_Dd(ROFF_ARGS);
202: static enum rofferr roff_TH(ROFF_ARGS);
1.27 schwarze 203: static enum rofferr roff_TE(ROFF_ARGS);
204: static enum rofferr roff_TS(ROFF_ARGS);
1.32 schwarze 205: static enum rofferr roff_EQ(ROFF_ARGS);
206: static enum rofferr roff_EN(ROFF_ARGS);
1.27 schwarze 207: static enum rofferr roff_T_(ROFF_ARGS);
1.123 schwarze 208: static enum rofferr roff_unsupp(ROFF_ARGS);
1.16 schwarze 209: static enum rofferr roff_userdef(ROFF_ARGS);
1.1 schwarze 210:
1.138 schwarze 211: /* --- constant data ------------------------------------------------------ */
212:
1.133 schwarze 213: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
214: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
215:
1.166 schwarze 216: const char *__roff_name[MAN_MAX + 1] = {
1.177 ! schwarze 217: "br", "ce", "ft", "ll",
! 218: "mc", "sp", "ta", "ti",
! 219: NULL,
1.166 schwarze 220: "ab", "ad", "af", "aln",
221: "als", "am", "am1", "ami",
222: "ami1", "as", "as1", "asciify",
223: "backtrace", "bd", "bleedat", "blm",
224: "box", "boxa", "bp", "BP",
225: "break", "breakchar", "brnl", "brp",
1.177 ! schwarze 226: "brpnl", "c2", "cc",
1.166 schwarze 227: "cf", "cflags", "ch", "char",
228: "chop", "class", "close", "CL",
229: "color", "composite", "continue", "cp",
230: "cropat", "cs", "cu", "da",
231: "dch", "Dd", "de", "de1",
232: "defcolor", "dei", "dei1", "device",
233: "devicem", "di", "do", "ds",
234: "ds1", "dwh", "dt", "ec",
235: "ecr", "ecs", "el", "em",
236: "EN", "eo", "EP", "EQ",
237: "errprint", "ev", "evc", "ex",
238: "fallback", "fam", "fc", "fchar",
239: "fcolor", "fdeferlig", "feature", "fkern",
240: "fl", "flig", "fp", "fps",
241: "fschar", "fspacewidth", "fspecial", "ftr",
242: "fzoom", "gcolor", "hc", "hcode",
243: "hidechar", "hla", "hlm", "hpf",
244: "hpfa", "hpfcode", "hw", "hy",
245: "hylang", "hylen", "hym", "hypp",
246: "hys", "ie", "if", "ig",
247: "index", "it", "itc", "IX",
248: "kern", "kernafter", "kernbefore", "kernpair",
249: "lc", "lc_ctype", "lds", "length",
250: "letadj", "lf", "lg", "lhang",
251: "linetabs", "lnr", "lnrf", "lpfx",
1.176 schwarze 252: "ls", "lsm", "lt",
1.166 schwarze 253: "mediasize", "minss", "mk", "mso",
254: "na", "ne", "nh", "nhychar",
255: "nm", "nn", "nop", "nr",
256: "nrf", "nroff", "ns", "nx",
257: "open", "opena", "os", "output",
258: "padj", "papersize", "pc", "pev",
259: "pi", "PI", "pl", "pm",
260: "pn", "pnr", "po", "ps",
261: "psbb", "pshape", "pso", "ptr",
262: "pvs", "rchar", "rd", "recursionlimit",
263: "return", "rfschar", "rhang", "rj",
264: "rm", "rn", "rnn", "rr",
265: "rs", "rt", "schar", "sentchar",
266: "shc", "shift", "sizes", "so",
267: "spacewidth", "special", "spreadwarn", "ss",
268: "sty", "substring", "sv", "sy",
1.172 schwarze 269: "T&", "tc", "TE",
1.173 schwarze 270: "TH", "tkf", "tl",
1.166 schwarze 271: "tm", "tm1", "tmc", "tr",
272: "track", "transchar", "trf", "trimat",
273: "trin", "trnt", "troff", "TS",
274: "uf", "ul", "unformat", "unwatch",
275: "unwatchn", "vpt", "vs", "warn",
276: "warnscale", "watch", "watchlength", "watchn",
277: "wh", "while", "write", "writec",
278: "writem", "xflag", ".", NULL,
279: "text",
280: "Dd", "Dt", "Os", "Sh",
281: "Ss", "Pp", "D1", "Dl",
282: "Bd", "Ed", "Bl", "El",
283: "It", "Ad", "An", "Ap",
284: "Ar", "Cd", "Cm", "Dv",
285: "Er", "Ev", "Ex", "Fa",
286: "Fd", "Fl", "Fn", "Ft",
287: "Ic", "In", "Li", "Nd",
288: "Nm", "Op", "Ot", "Pa",
289: "Rv", "St", "Va", "Vt",
290: "Xr", "%A", "%B", "%D",
291: "%I", "%J", "%N", "%O",
292: "%P", "%R", "%T", "%V",
293: "Ac", "Ao", "Aq", "At",
294: "Bc", "Bf", "Bo", "Bq",
295: "Bsx", "Bx", "Db", "Dc",
296: "Do", "Dq", "Ec", "Ef",
297: "Em", "Eo", "Fx", "Ms",
298: "No", "Ns", "Nx", "Ox",
299: "Pc", "Pf", "Po", "Pq",
300: "Qc", "Ql", "Qo", "Qq",
301: "Re", "Rs", "Sc", "So",
302: "Sq", "Sm", "Sx", "Sy",
303: "Tn", "Ux", "Xc", "Xo",
304: "Fo", "Fc", "Oo", "Oc",
305: "Bk", "Ek", "Bt", "Hf",
306: "Fr", "Ud", "Lb", "Lp",
307: "Lk", "Mt", "Brq", "Bro",
308: "Brc", "%C", "Es", "En",
1.171 schwarze 309: "Dx", "%Q", "%U", "Ta",
310: NULL,
1.166 schwarze 311: "TH", "SH", "SS", "TP",
312: "LP", "PP", "P", "IP",
313: "HP", "SM", "SB", "BI",
314: "IB", "BR", "RB", "R",
315: "B", "I", "IR", "RI",
1.171 schwarze 316: "nf", "fi",
1.166 schwarze 317: "RE", "RS", "DT", "UC",
1.169 schwarze 318: "PD", "AT", "in",
1.166 schwarze 319: "OP", "EX", "EE", "UR",
1.170 schwarze 320: "UE", NULL
1.166 schwarze 321: };
322: const char *const *roff_name = __roff_name;
323:
324: static struct roffmac roffs[TOKEN_NONE] = {
1.168 schwarze 325: { roff_br, NULL, NULL, 0 }, /* br */
1.177 ! schwarze 326: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.169 schwarze 327: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.170 schwarze 328: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.176 schwarze 329: { roff_onearg, NULL, NULL, 0 }, /* mc */
1.171 schwarze 330: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.172 schwarze 331: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.173 schwarze 332: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.168 schwarze 333: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.167 schwarze 334: { roff_unsupp, NULL, NULL, 0 }, /* ab */
335: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
336: { roff_line_ignore, NULL, NULL, 0 }, /* af */
337: { roff_unsupp, NULL, NULL, 0 }, /* aln */
338: { roff_unsupp, NULL, NULL, 0 }, /* als */
339: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
340: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
341: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
342: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
343: { roff_ds, NULL, NULL, 0 }, /* as */
344: { roff_ds, NULL, NULL, 0 }, /* as1 */
345: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
346: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
347: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
348: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
349: { roff_unsupp, NULL, NULL, 0 }, /* blm */
350: { roff_unsupp, NULL, NULL, 0 }, /* box */
351: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
352: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
353: { roff_unsupp, NULL, NULL, 0 }, /* BP */
354: { roff_unsupp, NULL, NULL, 0 }, /* break */
355: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
356: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.168 schwarze 357: { roff_br, NULL, NULL, 0 }, /* brp */
1.167 schwarze 358: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
359: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
360: { roff_cc, NULL, NULL, 0 }, /* cc */
361: { roff_insec, NULL, NULL, 0 }, /* cf */
362: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
363: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
364: { roff_unsupp, NULL, NULL, 0 }, /* char */
365: { roff_unsupp, NULL, NULL, 0 }, /* chop */
366: { roff_line_ignore, NULL, NULL, 0 }, /* class */
367: { roff_insec, NULL, NULL, 0 }, /* close */
368: { roff_unsupp, NULL, NULL, 0 }, /* CL */
369: { roff_line_ignore, NULL, NULL, 0 }, /* color */
370: { roff_unsupp, NULL, NULL, 0 }, /* composite */
371: { roff_unsupp, NULL, NULL, 0 }, /* continue */
372: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
373: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
374: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
375: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
376: { roff_unsupp, NULL, NULL, 0 }, /* da */
377: { roff_unsupp, NULL, NULL, 0 }, /* dch */
378: { roff_Dd, NULL, NULL, 0 }, /* Dd */
379: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
380: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
381: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
382: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
383: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
384: { roff_unsupp, NULL, NULL, 0 }, /* device */
385: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
386: { roff_unsupp, NULL, NULL, 0 }, /* di */
387: { roff_unsupp, NULL, NULL, 0 }, /* do */
388: { roff_ds, NULL, NULL, 0 }, /* ds */
389: { roff_ds, NULL, NULL, 0 }, /* ds1 */
390: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
391: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.175 schwarze 392: { roff_ec, NULL, NULL, 0 }, /* ec */
1.167 schwarze 393: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
394: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
395: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
396: { roff_unsupp, NULL, NULL, 0 }, /* em */
397: { roff_EN, NULL, NULL, 0 }, /* EN */
1.175 schwarze 398: { roff_eo, NULL, NULL, 0 }, /* eo */
1.167 schwarze 399: { roff_unsupp, NULL, NULL, 0 }, /* EP */
400: { roff_EQ, NULL, NULL, 0 }, /* EQ */
401: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
402: { roff_unsupp, NULL, NULL, 0 }, /* ev */
403: { roff_unsupp, NULL, NULL, 0 }, /* evc */
404: { roff_unsupp, NULL, NULL, 0 }, /* ex */
405: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
406: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
407: { roff_unsupp, NULL, NULL, 0 }, /* fc */
408: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
409: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
410: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
411: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
412: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
413: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
414: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
415: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
416: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
417: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
418: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
419: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
420: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
421: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
422: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
423: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
424: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
425: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
426: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
427: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
428: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
429: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
430: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
431: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
432: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
433: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
434: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
435: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
436: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
437: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
438: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
439: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
440: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
441: { roff_unsupp, NULL, NULL, 0 }, /* index */
442: { roff_it, NULL, NULL, 0 }, /* it */
443: { roff_unsupp, NULL, NULL, 0 }, /* itc */
444: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
445: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
446: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
447: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
448: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
449: { roff_unsupp, NULL, NULL, 0 }, /* lc */
450: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
451: { roff_unsupp, NULL, NULL, 0 }, /* lds */
452: { roff_unsupp, NULL, NULL, 0 }, /* length */
453: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
454: { roff_insec, NULL, NULL, 0 }, /* lf */
455: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
456: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
457: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
458: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
459: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
460: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
461: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
462: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
463: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
464: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
465: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
466: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
467: { roff_insec, NULL, NULL, 0 }, /* mso */
468: { roff_line_ignore, NULL, NULL, 0 }, /* na */
469: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
470: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
471: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
472: { roff_unsupp, NULL, NULL, 0 }, /* nm */
473: { roff_unsupp, NULL, NULL, 0 }, /* nn */
474: { roff_unsupp, NULL, NULL, 0 }, /* nop */
475: { roff_nr, NULL, NULL, 0 }, /* nr */
476: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
477: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
478: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
479: { roff_insec, NULL, NULL, 0 }, /* nx */
480: { roff_insec, NULL, NULL, 0 }, /* open */
481: { roff_insec, NULL, NULL, 0 }, /* opena */
482: { roff_line_ignore, NULL, NULL, 0 }, /* os */
483: { roff_unsupp, NULL, NULL, 0 }, /* output */
484: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
485: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
486: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
487: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
488: { roff_insec, NULL, NULL, 0 }, /* pi */
489: { roff_unsupp, NULL, NULL, 0 }, /* PI */
490: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
491: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
492: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
493: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
494: { roff_line_ignore, NULL, NULL, 0 }, /* po */
495: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
496: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
497: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
498: { roff_insec, NULL, NULL, 0 }, /* pso */
499: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
500: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
501: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
502: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
503: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
504: { roff_unsupp, NULL, NULL, 0 }, /* return */
505: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
506: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
507: { roff_line_ignore, NULL, NULL, 0 }, /* rj */
508: { roff_rm, NULL, NULL, 0 }, /* rm */
509: { roff_unsupp, NULL, NULL, 0 }, /* rn */
510: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
511: { roff_rr, NULL, NULL, 0 }, /* rr */
512: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
513: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
514: { roff_unsupp, NULL, NULL, 0 }, /* schar */
515: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
516: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
517: { roff_unsupp, NULL, NULL, 0 }, /* shift */
518: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
519: { roff_so, NULL, NULL, 0 }, /* so */
520: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
521: { roff_line_ignore, NULL, NULL, 0 }, /* special */
522: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
523: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
524: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
525: { roff_unsupp, NULL, NULL, 0 }, /* substring */
526: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
527: { roff_insec, NULL, NULL, 0 }, /* sy */
528: { roff_T_, NULL, NULL, 0 }, /* T& */
529: { roff_unsupp, NULL, NULL, 0 }, /* tc */
530: { roff_TE, NULL, NULL, 0 }, /* TE */
531: { roff_TH, NULL, NULL, 0 }, /* TH */
532: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
533: { roff_unsupp, NULL, NULL, 0 }, /* tl */
534: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
535: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
536: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
537: { roff_tr, NULL, NULL, 0 }, /* tr */
538: { roff_line_ignore, NULL, NULL, 0 }, /* track */
539: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
540: { roff_insec, NULL, NULL, 0 }, /* trf */
541: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
542: { roff_unsupp, NULL, NULL, 0 }, /* trin */
543: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
544: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
545: { roff_TS, NULL, NULL, 0 }, /* TS */
546: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
547: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
548: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
549: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
550: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
551: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
552: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
553: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
554: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
555: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
556: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
557: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
558: { roff_unsupp, NULL, NULL, 0 }, /* wh */
559: { roff_unsupp, NULL, NULL, 0 }, /* while */
560: { roff_insec, NULL, NULL, 0 }, /* write */
561: { roff_insec, NULL, NULL, 0 }, /* writec */
562: { roff_insec, NULL, NULL, 0 }, /* writem */
563: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
564: { roff_cblock, NULL, NULL, 0 }, /* . */
565: { roff_userdef, NULL, NULL, 0 }
1.1 schwarze 566: };
567:
1.73 schwarze 568: /* not currently implemented: Ds em Eq LP Me PP pp Or Rd Sf SH */
1.47 schwarze 569: const char *const __mdoc_reserved[] = {
570: "Ac", "Ad", "An", "Ao", "Ap", "Aq", "Ar", "At",
571: "Bc", "Bd", "Bf", "Bk", "Bl", "Bo", "Bq",
572: "Brc", "Bro", "Brq", "Bsx", "Bt", "Bx",
573: "Cd", "Cm", "Db", "Dc", "Dd", "Dl", "Do", "Dq",
1.73 schwarze 574: "Dt", "Dv", "Dx", "D1",
575: "Ec", "Ed", "Ef", "Ek", "El", "Em",
576: "En", "Eo", "Er", "Es", "Ev", "Ex",
1.47 schwarze 577: "Fa", "Fc", "Fd", "Fl", "Fn", "Fo", "Fr", "Ft", "Fx",
1.73 schwarze 578: "Hf", "Ic", "In", "It", "Lb", "Li", "Lk", "Lp",
579: "Ms", "Mt", "Nd", "Nm", "No", "Ns", "Nx",
1.47 schwarze 580: "Oc", "Oo", "Op", "Os", "Ot", "Ox",
1.73 schwarze 581: "Pa", "Pc", "Pf", "Po", "Pp", "Pq",
582: "Qc", "Ql", "Qo", "Qq", "Re", "Rs", "Rv",
583: "Sc", "Sh", "Sm", "So", "Sq",
1.47 schwarze 584: "Ss", "St", "Sx", "Sy",
585: "Ta", "Tn", "Ud", "Ux", "Va", "Vt", "Xc", "Xo", "Xr",
1.73 schwarze 586: "%A", "%B", "%C", "%D", "%I", "%J", "%N", "%O",
1.47 schwarze 587: "%P", "%Q", "%R", "%T", "%U", "%V",
588: NULL
589: };
590:
1.73 schwarze 591: /* not currently implemented: BT DE DS ME MT PT SY TQ YS */
1.47 schwarze 592: const char *const __man_reserved[] = {
1.73 schwarze 593: "AT", "B", "BI", "BR", "DT",
594: "EE", "EN", "EQ", "EX", "HP", "I", "IB", "IP", "IR",
595: "LP", "OP", "P", "PD", "PP",
596: "R", "RB", "RE", "RI", "RS", "SB", "SH", "SM", "SS",
597: "TE", "TH", "TP", "TS", "T&", "UC", "UE", "UR",
1.47 schwarze 598: NULL
599: };
600:
1.37 schwarze 601: /* Array of injected predefined strings. */
602: #define PREDEFS_MAX 38
603: static const struct predef predefs[PREDEFS_MAX] = {
604: #include "predefs.in"
605: };
606:
1.177 ! schwarze 607: static int roffce_lines; /* number of input lines to center */
! 608: static struct roff_node *roffce_node; /* active request */
1.51 schwarze 609: static int roffit_lines; /* number of lines to delay */
610: static char *roffit_macro; /* nil-terminated macro line */
611:
1.80 schwarze 612:
1.138 schwarze 613: /* --- request table ------------------------------------------------------ */
614:
1.167 schwarze 615: struct ohash *
616: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.3 schwarze 617: {
1.167 schwarze 618: struct ohash *htab;
619: struct roffreq *req;
620: enum roff_tok tok;
621: size_t sz;
622: unsigned int slot;
1.3 schwarze 623:
1.167 schwarze 624: htab = mandoc_malloc(sizeof(*htab));
625: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.3 schwarze 626:
1.167 schwarze 627: for (tok = mintok; tok < maxtok; tok++) {
1.168 schwarze 628: if (roff_name[tok] == NULL)
629: continue;
1.167 schwarze 630: sz = strlen(roff_name[tok]);
631: req = mandoc_malloc(sizeof(*req) + sz + 1);
632: req->tok = tok;
633: memcpy(req->name, roff_name[tok], sz + 1);
634: slot = ohash_qlookup(htab, req->name);
635: ohash_insert(htab, slot, req);
1.3 schwarze 636: }
1.167 schwarze 637: return htab;
1.3 schwarze 638: }
639:
1.167 schwarze 640: void
641: roffhash_free(struct ohash *htab)
1.1 schwarze 642: {
1.167 schwarze 643: struct roffreq *req;
644: unsigned int slot;
1.1 schwarze 645:
1.167 schwarze 646: if (htab == NULL)
647: return;
648: for (req = ohash_first(htab, &slot); req != NULL;
649: req = ohash_next(htab, &slot))
650: free(req);
651: ohash_delete(htab);
652: free(htab);
653: }
654:
655: enum roff_tok
656: roffhash_find(struct ohash *htab, const char *name, size_t sz)
657: {
658: struct roffreq *req;
659: const char *end;
660:
661: if (sz) {
662: end = name + sz;
663: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
664: } else
665: req = ohash_find(htab, ohash_qlookup(htab, name));
666: return req == NULL ? TOKEN_NONE : req->tok;
1.1 schwarze 667: }
668:
1.138 schwarze 669: /* --- stack of request blocks -------------------------------------------- */
670:
1.1 schwarze 671: /*
672: * Pop the current node off of the stack of roff instructions currently
673: * pending.
674: */
675: static void
676: roffnode_pop(struct roff *r)
677: {
678: struct roffnode *p;
679:
1.2 schwarze 680: assert(r->last);
1.80 schwarze 681: p = r->last;
1.2 schwarze 682:
683: r->last = r->last->parent;
1.16 schwarze 684: free(p->name);
685: free(p->end);
1.1 schwarze 686: free(p);
687: }
688:
689: /*
690: * Push a roff node onto the instruction stack. This must later be
691: * removed with roffnode_pop().
692: */
1.11 schwarze 693: static void
1.166 schwarze 694: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.16 schwarze 695: int line, int col)
1.1 schwarze 696: {
697: struct roffnode *p;
698:
1.11 schwarze 699: p = mandoc_calloc(1, sizeof(struct roffnode));
1.1 schwarze 700: p->tok = tok;
1.16 schwarze 701: if (name)
702: p->name = mandoc_strdup(name);
1.1 schwarze 703: p->parent = r->last;
704: p->line = line;
705: p->col = col;
1.71 schwarze 706: p->rule = p->parent ? p->parent->rule : 0;
1.1 schwarze 707:
708: r->last = p;
709: }
710:
1.138 schwarze 711: /* --- roff parser state data management ---------------------------------- */
712:
1.1 schwarze 713: static void
714: roff_free1(struct roff *r)
715: {
1.49 schwarze 716: struct tbl_node *tbl;
1.32 schwarze 717: struct eqn_node *e;
1.42 schwarze 718: int i;
1.27 schwarze 719:
1.49 schwarze 720: while (NULL != (tbl = r->first_tbl)) {
721: r->first_tbl = tbl->next;
722: tbl_free(tbl);
1.27 schwarze 723: }
724: r->first_tbl = r->last_tbl = r->tbl = NULL;
1.1 schwarze 725:
1.32 schwarze 726: while (NULL != (e = r->first_eqn)) {
727: r->first_eqn = e->next;
728: eqn_free(e);
729: }
730: r->first_eqn = r->last_eqn = r->eqn = NULL;
731:
1.1 schwarze 732: while (r->last)
733: roffnode_pop(r);
1.27 schwarze 734:
1.96 schwarze 735: free (r->rstack);
736: r->rstack = NULL;
737: r->rstacksz = 0;
738: r->rstackpos = -1;
739:
740: roff_freereg(r->regtab);
741: r->regtab = NULL;
742:
1.42 schwarze 743: roff_freestr(r->strtab);
744: roff_freestr(r->xmbtab);
745: r->strtab = r->xmbtab = NULL;
746:
747: if (r->xtab)
748: for (i = 0; i < 128; i++)
749: free(r->xtab[i].p);
750: free(r->xtab);
751: r->xtab = NULL;
1.1 schwarze 752: }
753:
754: void
755: roff_reset(struct roff *r)
756: {
757: roff_free1(r);
1.99 schwarze 758: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.175 schwarze 759: r->control = '\0';
760: r->escape = '\\';
1.1 schwarze 761: }
762:
763: void
764: roff_free(struct roff *r)
765: {
766: roff_free1(r);
1.167 schwarze 767: roffhash_free(r->reqtab);
1.1 schwarze 768: free(r);
769: }
770:
771: struct roff *
1.151 schwarze 772: roff_alloc(struct mparse *parse, int options)
1.1 schwarze 773: {
774: struct roff *r;
775:
1.11 schwarze 776: r = mandoc_calloc(1, sizeof(struct roff));
1.35 schwarze 777: r->parse = parse;
1.167 schwarze 778: r->reqtab = roffhash_alloc(0, ROFF_USERDEF);
1.72 schwarze 779: r->options = options;
1.99 schwarze 780: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.2 schwarze 781: r->rstackpos = -1;
1.175 schwarze 782: r->escape = '\\';
1.149 schwarze 783: return r;
1.137 schwarze 784: }
785:
1.138 schwarze 786: /* --- syntax tree state data management ---------------------------------- */
787:
1.137 schwarze 788: static void
789: roff_man_free1(struct roff_man *man)
790: {
791:
1.138 schwarze 792: if (man->first != NULL)
793: roff_node_delete(man, man->first);
1.137 schwarze 794: free(man->meta.msec);
795: free(man->meta.vol);
796: free(man->meta.os);
797: free(man->meta.arch);
798: free(man->meta.title);
799: free(man->meta.name);
800: free(man->meta.date);
801: }
802:
803: static void
804: roff_man_alloc1(struct roff_man *man)
805: {
806:
807: memset(&man->meta, 0, sizeof(man->meta));
808: man->first = mandoc_calloc(1, sizeof(*man->first));
809: man->first->type = ROFFT_ROOT;
810: man->last = man->first;
811: man->last_es = NULL;
812: man->flags = 0;
813: man->macroset = MACROSET_NONE;
814: man->lastsec = man->lastnamed = SEC_NONE;
815: man->next = ROFF_NEXT_CHILD;
816: }
817:
818: void
819: roff_man_reset(struct roff_man *man)
820: {
821:
822: roff_man_free1(man);
823: roff_man_alloc1(man);
824: }
825:
826: void
827: roff_man_free(struct roff_man *man)
828: {
829:
830: roff_man_free1(man);
831: free(man);
832: }
833:
834: struct roff_man *
835: roff_man_alloc(struct roff *roff, struct mparse *parse,
836: const char *defos, int quick)
837: {
838: struct roff_man *man;
839:
840: man = mandoc_calloc(1, sizeof(*man));
841: man->parse = parse;
842: man->roff = roff;
843: man->defos = defos;
844: man->quick = quick;
845: roff_man_alloc1(man);
1.168 schwarze 846: roff->man = man;
1.149 schwarze 847: return man;
1.1 schwarze 848: }
849:
1.138 schwarze 850: /* --- syntax tree handling ----------------------------------------------- */
851:
852: struct roff_node *
853: roff_node_alloc(struct roff_man *man, int line, int pos,
854: enum roff_type type, int tok)
855: {
856: struct roff_node *n;
857:
858: n = mandoc_calloc(1, sizeof(*n));
859: n->line = line;
860: n->pos = pos;
861: n->tok = tok;
862: n->type = type;
863: n->sec = man->lastsec;
864:
865: if (man->flags & MDOC_SYNOPSIS)
1.157 schwarze 866: n->flags |= NODE_SYNPRETTY;
1.138 schwarze 867: else
1.157 schwarze 868: n->flags &= ~NODE_SYNPRETTY;
1.138 schwarze 869: if (man->flags & MDOC_NEWLINE)
1.157 schwarze 870: n->flags |= NODE_LINE;
1.138 schwarze 871: man->flags &= ~MDOC_NEWLINE;
872:
1.149 schwarze 873: return n;
1.138 schwarze 874: }
875:
876: void
877: roff_node_append(struct roff_man *man, struct roff_node *n)
878: {
879:
880: switch (man->next) {
881: case ROFF_NEXT_SIBLING:
1.153 schwarze 882: if (man->last->next != NULL) {
883: n->next = man->last->next;
884: man->last->next->prev = n;
885: } else
886: man->last->parent->last = n;
1.138 schwarze 887: man->last->next = n;
888: n->prev = man->last;
889: n->parent = man->last->parent;
890: break;
891: case ROFF_NEXT_CHILD:
1.159 schwarze 892: if (man->last->child != NULL) {
893: n->next = man->last->child;
894: man->last->child->prev = n;
895: } else
896: man->last->last = n;
1.138 schwarze 897: man->last->child = n;
898: n->parent = man->last;
899: break;
900: default:
901: abort();
902: }
1.154 schwarze 903: man->last = n;
1.138 schwarze 904:
905: switch (n->type) {
906: case ROFFT_HEAD:
907: n->parent->head = n;
908: break;
909: case ROFFT_BODY:
1.154 schwarze 910: if (n->end != ENDBODY_NOT)
911: return;
1.138 schwarze 912: n->parent->body = n;
913: break;
914: case ROFFT_TAIL:
915: n->parent->tail = n;
916: break;
917: default:
1.154 schwarze 918: return;
1.138 schwarze 919: }
1.154 schwarze 920:
921: /*
922: * Copy over the normalised-data pointer of our parent. Not
923: * everybody has one, but copying a null pointer is fine.
924: */
925:
926: n->norm = n->parent->norm;
927: assert(n->parent->type == ROFFT_BLOCK);
1.138 schwarze 928: }
929:
1.139 schwarze 930: void
931: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
932: {
933: struct roff_node *n;
934:
935: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
936: n->string = roff_strdup(man->roff, word);
937: roff_node_append(man, n);
1.158 schwarze 938: n->flags |= NODE_VALID | NODE_ENDED;
1.139 schwarze 939: man->next = ROFF_NEXT_SIBLING;
940: }
941:
942: void
943: roff_word_append(struct roff_man *man, const char *word)
944: {
945: struct roff_node *n;
946: char *addstr, *newstr;
947:
948: n = man->last;
949: addstr = roff_strdup(man->roff, word);
950: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
951: free(addstr);
952: free(n->string);
953: n->string = newstr;
954: man->next = ROFF_NEXT_SIBLING;
1.140 schwarze 955: }
956:
957: void
958: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
959: {
960: struct roff_node *n;
961:
962: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
963: roff_node_append(man, n);
964: man->next = ROFF_NEXT_CHILD;
965: }
966:
967: struct roff_node *
968: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
969: {
970: struct roff_node *n;
971:
972: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
973: roff_node_append(man, n);
974: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 975: return n;
1.139 schwarze 976: }
977:
1.138 schwarze 978: struct roff_node *
979: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
980: {
981: struct roff_node *n;
982:
983: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
984: roff_node_append(man, n);
985: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 986: return n;
1.138 schwarze 987: }
988:
989: struct roff_node *
990: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
991: {
992: struct roff_node *n;
993:
994: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
995: roff_node_append(man, n);
996: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 997: return n;
1.139 schwarze 998: }
999:
1000: void
1001: roff_addeqn(struct roff_man *man, const struct eqn *eqn)
1002: {
1003: struct roff_node *n;
1004:
1005: n = roff_node_alloc(man, eqn->ln, eqn->pos, ROFFT_EQN, TOKEN_NONE);
1006: n->eqn = eqn;
1007: if (eqn->ln > man->last->line)
1.157 schwarze 1008: n->flags |= NODE_LINE;
1.139 schwarze 1009: roff_node_append(man, n);
1010: man->next = ROFF_NEXT_SIBLING;
1011: }
1012:
1013: void
1014: roff_addtbl(struct roff_man *man, const struct tbl_span *tbl)
1015: {
1016: struct roff_node *n;
1017:
1018: if (man->macroset == MACROSET_MAN)
1.174 schwarze 1019: man_breakscope(man, ROFF_TS);
1.139 schwarze 1020: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
1021: n->span = tbl;
1022: roff_node_append(man, n);
1.158 schwarze 1023: n->flags |= NODE_VALID | NODE_ENDED;
1.139 schwarze 1024: man->next = ROFF_NEXT_SIBLING;
1.138 schwarze 1025: }
1026:
1027: void
1028: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1029: {
1030:
1031: /* Adjust siblings. */
1032:
1033: if (n->prev)
1034: n->prev->next = n->next;
1035: if (n->next)
1036: n->next->prev = n->prev;
1037:
1038: /* Adjust parent. */
1039:
1040: if (n->parent != NULL) {
1041: if (n->parent->child == n)
1042: n->parent->child = n->next;
1043: if (n->parent->last == n)
1044: n->parent->last = n->prev;
1045: }
1046:
1047: /* Adjust parse point. */
1048:
1049: if (man == NULL)
1050: return;
1051: if (man->last == n) {
1052: if (n->prev == NULL) {
1053: man->last = n->parent;
1054: man->next = ROFF_NEXT_CHILD;
1055: } else {
1056: man->last = n->prev;
1057: man->next = ROFF_NEXT_SIBLING;
1058: }
1059: }
1060: if (man->first == n)
1061: man->first = NULL;
1062: }
1063:
1064: void
1065: roff_node_free(struct roff_node *n)
1066: {
1067:
1068: if (n->args != NULL)
1069: mdoc_argv_free(n->args);
1070: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1071: free(n->norm);
1072: free(n->string);
1073: free(n);
1074: }
1075:
1076: void
1077: roff_node_delete(struct roff_man *man, struct roff_node *n)
1078: {
1079:
1080: while (n->child != NULL)
1081: roff_node_delete(man, n->child);
1082: roff_node_unlink(man, n);
1083: roff_node_free(n);
1.141 schwarze 1084: }
1085:
1086: void
1087: deroff(char **dest, const struct roff_node *n)
1088: {
1089: char *cp;
1090: size_t sz;
1091:
1092: if (n->type != ROFFT_TEXT) {
1093: for (n = n->child; n != NULL; n = n->next)
1094: deroff(dest, n);
1095: return;
1096: }
1097:
1.160 schwarze 1098: /* Skip leading whitespace. */
1.141 schwarze 1099:
1.160 schwarze 1100: for (cp = n->string; *cp != '\0'; cp++) {
1.161 schwarze 1101: if (cp[0] == '\\' && cp[1] != '\0' &&
1102: strchr(" %&0^|~", cp[1]) != NULL)
1.141 schwarze 1103: cp++;
1.160 schwarze 1104: else if ( ! isspace((unsigned char)*cp))
1.141 schwarze 1105: break;
1106: }
1107:
1.161 schwarze 1108: /* Skip trailing backslash. */
1109:
1110: sz = strlen(cp);
1.162 schwarze 1111: if (sz > 0 && cp[sz - 1] == '\\')
1.161 schwarze 1112: sz--;
1113:
1.141 schwarze 1114: /* Skip trailing whitespace. */
1115:
1.161 schwarze 1116: for (; sz; sz--)
1.141 schwarze 1117: if ( ! isspace((unsigned char)cp[sz-1]))
1118: break;
1119:
1120: /* Skip empty strings. */
1121:
1122: if (sz == 0)
1123: return;
1124:
1125: if (*dest == NULL) {
1126: *dest = mandoc_strndup(cp, sz);
1127: return;
1128: }
1129:
1130: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1131: free(*dest);
1132: *dest = cp;
1.138 schwarze 1133: }
1134:
1135: /* --- main functions of the roff parser ---------------------------------- */
1136:
1.8 schwarze 1137: /*
1.79 schwarze 1138: * In the current line, expand escape sequences that tend to get
1139: * used in numerical expressions and conditional requests.
1140: * Also check the syntax of the remaining escape sequences.
1.8 schwarze 1141: */
1.45 schwarze 1142: static enum rofferr
1.110 schwarze 1143: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.8 schwarze 1144: {
1.81 schwarze 1145: char ubuf[24]; /* buffer to print the number */
1.78 schwarze 1146: const char *start; /* start of the string to process */
1.82 schwarze 1147: char *stesc; /* start of an escape sequence ('\\') */
1.23 schwarze 1148: const char *stnam; /* start of the name, after "[(*" */
1149: const char *cp; /* end of the name, e.g. before ']' */
1150: const char *res; /* the string to be substituted */
1.110 schwarze 1151: char *nbuf; /* new buffer to copy buf->buf to */
1.53 schwarze 1152: size_t maxl; /* expected length of the escape name */
1153: size_t naml; /* actual length of the escape name */
1.109 schwarze 1154: enum mandoc_esc esc; /* type of the escape sequence */
1155: int inaml; /* length returned from mandoc_escape() */
1.53 schwarze 1156: int expand_count; /* to avoid infinite loops */
1.79 schwarze 1157: int npos; /* position in numeric expression */
1.91 schwarze 1158: int arg_complete; /* argument not interrupted by eol */
1.175 schwarze 1159: int done; /* no more input available */
1.79 schwarze 1160: char term; /* character terminating the escape */
1.8 schwarze 1161:
1.175 schwarze 1162: /* Search forward for comments. */
1163:
1164: done = 0;
1165: start = buf->buf + pos;
1166: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1167: if (stesc[0] != r->escape || stesc[1] == '\0')
1168: continue;
1169: stesc++;
1170: if (*stesc != '"' && *stesc != '#')
1171: continue;
1172: cp = strchr(stesc--, '\0') - 1;
1173: if (*cp == '\n') {
1174: done = 1;
1175: cp--;
1176: }
1177: if (*cp == ' ' || *cp == '\t')
1178: mandoc_msg(MANDOCERR_SPACE_EOL, r->parse,
1179: ln, cp - buf->buf, NULL);
1180: while (stesc > start && stesc[-1] == ' ')
1181: stesc--;
1182: *stesc = '\0';
1183: break;
1184: }
1185: if (stesc == start)
1186: return ROFF_CONT;
1187: stesc--;
1188:
1189: /* Notice the end of the input. */
1190:
1191: if (*stesc == '\n') {
1192: *stesc-- = '\0';
1193: done = 1;
1194: }
1195:
1.43 schwarze 1196: expand_count = 0;
1.175 schwarze 1197: while (stesc >= start) {
1.43 schwarze 1198:
1.78 schwarze 1199: /* Search backwards for the next backslash. */
1200:
1.175 schwarze 1201: if (*stesc != r->escape) {
1202: if (*stesc == '\\') {
1203: *stesc = '\0';
1204: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1205: buf->buf, stesc + 1) + 1;
1206: start = nbuf + pos;
1207: stesc = nbuf + (stesc - buf->buf);
1208: free(buf->buf);
1209: buf->buf = nbuf;
1210: }
1211: stesc--;
1.78 schwarze 1212: continue;
1.175 schwarze 1213: }
1.78 schwarze 1214:
1215: /* If it is escaped, skip it. */
1216:
1217: for (cp = stesc - 1; cp >= start; cp--)
1.175 schwarze 1218: if (*cp != r->escape)
1.78 schwarze 1219: break;
1220:
1.110 schwarze 1221: if ((stesc - cp) % 2 == 0) {
1.175 schwarze 1222: while (stesc > cp)
1223: *stesc-- = '\\';
1.78 schwarze 1224: continue;
1.175 schwarze 1225: } else if (stesc[1] != '\0') {
1226: *stesc = '\\';
1227: } else {
1228: *stesc-- = '\0';
1229: if (done)
1230: continue;
1231: else
1232: return ROFF_APPEND;
1.78 schwarze 1233: }
1.23 schwarze 1234:
1.79 schwarze 1235: /* Decide whether to expand or to check only. */
1.23 schwarze 1236:
1.79 schwarze 1237: term = '\0';
1.78 schwarze 1238: cp = stesc + 1;
1.53 schwarze 1239: switch (*cp) {
1.80 schwarze 1240: case '*':
1.53 schwarze 1241: res = NULL;
1242: break;
1.80 schwarze 1243: case 'B':
1244: case 'w':
1.79 schwarze 1245: term = cp[1];
1246: /* FALLTHROUGH */
1.80 schwarze 1247: case 'n':
1.53 schwarze 1248: res = ubuf;
1249: break;
1250: default:
1.109 schwarze 1251: esc = mandoc_escape(&cp, &stnam, &inaml);
1252: if (esc == ESCAPE_ERROR ||
1253: (esc == ESCAPE_SPECIAL &&
1.151 schwarze 1254: mchars_spec2cp(stnam, inaml) < 0))
1.92 schwarze 1255: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.110 schwarze 1256: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1257: "%.*s", (int)(cp - stesc), stesc);
1.175 schwarze 1258: stesc--;
1.78 schwarze 1259: continue;
1.42 schwarze 1260: }
1261:
1.78 schwarze 1262: if (EXPAND_LIMIT < ++expand_count) {
1263: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.110 schwarze 1264: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1265: return ROFF_IGN;
1.78 schwarze 1266: }
1.23 schwarze 1267:
1268: /*
1269: * The third character decides the length
1.53 schwarze 1270: * of the name of the string or register.
1.23 schwarze 1271: * Save a pointer to the name.
1272: */
1273:
1.110 schwarze 1274: if (term == '\0') {
1.79 schwarze 1275: switch (*++cp) {
1.80 schwarze 1276: case '\0':
1.79 schwarze 1277: maxl = 0;
1278: break;
1.80 schwarze 1279: case '(':
1.79 schwarze 1280: cp++;
1281: maxl = 2;
1282: break;
1.80 schwarze 1283: case '[':
1.79 schwarze 1284: cp++;
1285: term = ']';
1286: maxl = 0;
1287: break;
1288: default:
1289: maxl = 1;
1290: break;
1291: }
1292: } else {
1293: cp += 2;
1.8 schwarze 1294: maxl = 0;
1295: }
1.23 schwarze 1296: stnam = cp;
1.8 schwarze 1297:
1.23 schwarze 1298: /* Advance to the end of the name. */
1.8 schwarze 1299:
1.125 schwarze 1300: naml = 0;
1.91 schwarze 1301: arg_complete = 1;
1.125 schwarze 1302: while (maxl == 0 || naml < maxl) {
1.110 schwarze 1303: if (*cp == '\0') {
1.92 schwarze 1304: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 1305: ln, (int)(stesc - buf->buf), stesc);
1.91 schwarze 1306: arg_complete = 0;
1.79 schwarze 1307: break;
1.42 schwarze 1308: }
1.110 schwarze 1309: if (maxl == 0 && *cp == term) {
1.79 schwarze 1310: cp++;
1.125 schwarze 1311: break;
1312: }
1313: if (*cp++ != '\\' || stesc[1] != 'w') {
1314: naml++;
1315: continue;
1316: }
1317: switch (mandoc_escape(&cp, NULL, NULL)) {
1318: case ESCAPE_SPECIAL:
1319: case ESCAPE_UNICODE:
1320: case ESCAPE_NUMBERED:
1321: case ESCAPE_OVERSTRIKE:
1322: naml++;
1323: break;
1324: default:
1.8 schwarze 1325: break;
1.79 schwarze 1326: }
1.8 schwarze 1327: }
1328:
1.23 schwarze 1329: /*
1330: * Retrieve the replacement string; if it is
1331: * undefined, resume searching for escapes.
1332: */
1333:
1.79 schwarze 1334: switch (stesc[1]) {
1.80 schwarze 1335: case '*':
1.91 schwarze 1336: if (arg_complete)
1337: res = roff_getstrn(r, stnam, naml);
1.79 schwarze 1338: break;
1.80 schwarze 1339: case 'B':
1.79 schwarze 1340: npos = 0;
1.91 schwarze 1341: ubuf[0] = arg_complete &&
1.133 schwarze 1342: roff_evalnum(r, ln, stnam, &npos,
1343: NULL, ROFFNUM_SCALE) &&
1.91 schwarze 1344: stnam + npos + 1 == cp ? '1' : '0';
1.79 schwarze 1345: ubuf[1] = '\0';
1346: break;
1.80 schwarze 1347: case 'n':
1.91 schwarze 1348: if (arg_complete)
1349: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1350: roff_getregn(r, stnam, naml));
1351: else
1352: ubuf[0] = '\0';
1.79 schwarze 1353: break;
1.80 schwarze 1354: case 'w':
1.91 schwarze 1355: /* use even incomplete args */
1.81 schwarze 1356: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.79 schwarze 1357: 24 * (int)naml);
1358: break;
1359: }
1.8 schwarze 1360:
1.110 schwarze 1361: if (res == NULL) {
1.92 schwarze 1362: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1363: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1364: "%.*s", (int)naml, stnam);
1.37 schwarze 1365: res = "";
1.118 schwarze 1366: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1367: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1368: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1369: return ROFF_IGN;
1.8 schwarze 1370: }
1371:
1.23 schwarze 1372: /* Replace the escape sequence by the string. */
1373:
1.82 schwarze 1374: *stesc = '\0';
1.110 schwarze 1375: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1376: buf->buf, res, cp) + 1;
1.8 schwarze 1377:
1.78 schwarze 1378: /* Prepare for the next replacement. */
1.8 schwarze 1379:
1.78 schwarze 1380: start = nbuf + pos;
1.110 schwarze 1381: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1382: free(buf->buf);
1383: buf->buf = nbuf;
1.42 schwarze 1384: }
1.149 schwarze 1385: return ROFF_CONT;
1.42 schwarze 1386: }
1387:
1388: /*
1.147 schwarze 1389: * Process text streams.
1.42 schwarze 1390: */
1391: static enum rofferr
1.177 ! schwarze 1392: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.42 schwarze 1393: {
1394: size_t sz;
1395: const char *start;
1.51 schwarze 1396: char *p;
1397: int isz;
1.42 schwarze 1398: enum mandoc_esc esc;
1399:
1.147 schwarze 1400: /* Spring the input line trap. */
1401:
1402: if (roffit_lines == 1) {
1403: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1404: free(buf->buf);
1405: buf->buf = p;
1406: buf->sz = isz + 1;
1407: *offs = 0;
1408: free(roffit_macro);
1409: roffit_lines = 0;
1.149 schwarze 1410: return ROFF_REPARSE;
1.147 schwarze 1411: } else if (roffit_lines > 1)
1412: --roffit_lines;
1413:
1.177 ! schwarze 1414: if (roffce_node != NULL && buf->buf[pos] != '\0') {
! 1415: if (roffce_lines < 1) {
! 1416: r->man->last = roffce_node;
! 1417: r->man->next = ROFF_NEXT_SIBLING;
! 1418: roffce_lines = 0;
! 1419: roffce_node = NULL;
! 1420: } else
! 1421: roffce_lines--;
! 1422: }
! 1423:
1.147 schwarze 1424: /* Convert all breakable hyphens into ASCII_HYPH. */
1425:
1.110 schwarze 1426: start = p = buf->buf + pos;
1.42 schwarze 1427:
1.110 schwarze 1428: while (*p != '\0') {
1.42 schwarze 1429: sz = strcspn(p, "-\\");
1430: p += sz;
1431:
1.110 schwarze 1432: if (*p == '\0')
1.42 schwarze 1433: break;
1434:
1.110 schwarze 1435: if (*p == '\\') {
1.42 schwarze 1436: /* Skip over escapes. */
1437: p++;
1.62 schwarze 1438: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.110 schwarze 1439: if (esc == ESCAPE_ERROR)
1.42 schwarze 1440: break;
1.136 schwarze 1441: while (*p == '-')
1442: p++;
1.42 schwarze 1443: continue;
1444: } else if (p == start) {
1445: p++;
1446: continue;
1447: }
1448:
1.44 schwarze 1449: if (isalpha((unsigned char)p[-1]) &&
1450: isalpha((unsigned char)p[1]))
1.42 schwarze 1451: *p = ASCII_HYPH;
1452: p++;
1.8 schwarze 1453: }
1.149 schwarze 1454: return ROFF_CONT;
1.8 schwarze 1455: }
1456:
1.1 schwarze 1457: enum rofferr
1.110 schwarze 1458: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.1 schwarze 1459: {
1.166 schwarze 1460: enum roff_tok t;
1.27 schwarze 1461: enum rofferr e;
1.110 schwarze 1462: int pos; /* parse point */
1.115 schwarze 1463: int spos; /* saved parse point for messages */
1.110 schwarze 1464: int ppos; /* original offset in buf->buf */
1465: int ctl; /* macro line (boolean) */
1466:
1467: ppos = pos = *offs;
1.1 schwarze 1468:
1.102 schwarze 1469: /* Handle in-line equation delimiters. */
1470:
1.108 schwarze 1471: if (r->tbl == NULL &&
1472: r->last_eqn != NULL && r->last_eqn->delim &&
1.102 schwarze 1473: (r->eqn == NULL || r->eqn_inline)) {
1.110 schwarze 1474: e = roff_eqndelim(r, buf, pos);
1.102 schwarze 1475: if (e == ROFF_REPARSE)
1.149 schwarze 1476: return e;
1.102 schwarze 1477: assert(e == ROFF_CONT);
1478: }
1479:
1480: /* Expand some escape sequences. */
1.8 schwarze 1481:
1.110 schwarze 1482: e = roff_res(r, buf, ln, pos);
1.175 schwarze 1483: if (e == ROFF_IGN || e == ROFF_APPEND)
1.149 schwarze 1484: return e;
1.110 schwarze 1485: assert(e == ROFF_CONT);
1.8 schwarze 1486:
1.110 schwarze 1487: ctl = roff_getcontrol(r, buf->buf, &pos);
1.35 schwarze 1488:
1.8 schwarze 1489: /*
1.2 schwarze 1490: * First, if a scope is open and we're not a macro, pass the
1.124 schwarze 1491: * text through the macro's filter.
1492: * Equations process all content themselves.
1493: * Tables process almost all content themselves, but we want
1494: * to warn about macros before passing it there.
1.2 schwarze 1495: */
1496:
1.124 schwarze 1497: if (r->last != NULL && ! ctl) {
1.2 schwarze 1498: t = r->last->tok;
1.110 schwarze 1499: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.166 schwarze 1500: if (e == ROFF_IGN)
1.149 schwarze 1501: return e;
1.166 schwarze 1502: assert(e == ROFF_CONT);
1.54 schwarze 1503: }
1.124 schwarze 1504: if (r->eqn != NULL)
1.149 schwarze 1505: return eqn_read(&r->eqn, ln, buf->buf, ppos, offs);
1.124 schwarze 1506: if (r->tbl != NULL && ( ! ctl || buf->buf[pos] == '\0'))
1.149 schwarze 1507: return tbl_read(r->tbl, ln, buf->buf, ppos);
1.124 schwarze 1508: if ( ! ctl)
1.177 ! schwarze 1509: return roff_parsetext(r, buf, pos, offs);
1.100 schwarze 1510:
1511: /* Skip empty request lines. */
1512:
1.110 schwarze 1513: if (buf->buf[pos] == '"') {
1.100 schwarze 1514: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1515: ln, pos, NULL);
1.149 schwarze 1516: return ROFF_IGN;
1.110 schwarze 1517: } else if (buf->buf[pos] == '\0')
1.149 schwarze 1518: return ROFF_IGN;
1.2 schwarze 1519:
1520: /*
1521: * If a scope is open, go to the child handler for that macro,
1522: * as it may want to preprocess before doing anything with it.
1.32 schwarze 1523: * Don't do so if an equation is open.
1.2 schwarze 1524: */
1525:
1526: if (r->last) {
1.1 schwarze 1527: t = r->last->tok;
1.149 schwarze 1528: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1529: }
1530:
1.115 schwarze 1531: /* No scope is open. This is a new request or macro. */
1532:
1533: spos = pos;
1534: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1535:
1536: /* Tables ignore most macros. */
1537:
1.166 schwarze 1538: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS)) {
1.115 schwarze 1539: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1540: ln, pos, buf->buf + spos);
1.129 schwarze 1541: if (t == ROFF_TS)
1.149 schwarze 1542: return ROFF_IGN;
1.129 schwarze 1543: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1544: pos++;
1.163 schwarze 1545: while (buf->buf[pos] == ' ')
1.129 schwarze 1546: pos++;
1.149 schwarze 1547: return tbl_read(r->tbl, ln, buf->buf, pos);
1.115 schwarze 1548: }
1549:
1.177 ! schwarze 1550: /* For now, let high level macros abort .ce mode. */
! 1551:
! 1552: if (ctl && roffce_node != NULL &&
! 1553: (t == TOKEN_NONE || t == ROFF_EQ || t == ROFF_TS)) {
! 1554: r->man->last = roffce_node;
! 1555: r->man->next = ROFF_NEXT_SIBLING;
! 1556: roffce_lines = 0;
! 1557: roffce_node = NULL;
! 1558: }
! 1559:
1.2 schwarze 1560: /*
1.115 schwarze 1561: * This is neither a roff request nor a user-defined macro.
1562: * Let the standard macro set parsers handle it.
1.2 schwarze 1563: */
1564:
1.166 schwarze 1565: if (t == TOKEN_NONE)
1.149 schwarze 1566: return ROFF_CONT;
1.115 schwarze 1567:
1568: /* Execute a roff request or a user defined macro. */
1.1 schwarze 1569:
1.168 schwarze 1570: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.2 schwarze 1571: }
1572:
1.27 schwarze 1573: void
1.2 schwarze 1574: roff_endparse(struct roff *r)
1575: {
1.1 schwarze 1576:
1.27 schwarze 1577: if (r->last)
1.94 schwarze 1578: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1579: r->last->line, r->last->col,
1.167 schwarze 1580: roff_name[r->last->tok]);
1.27 schwarze 1581:
1.32 schwarze 1582: if (r->eqn) {
1.94 schwarze 1583: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1584: r->eqn->eqn.ln, r->eqn->eqn.pos, "EQ");
1.41 schwarze 1585: eqn_end(&r->eqn);
1.32 schwarze 1586: }
1587:
1.27 schwarze 1588: if (r->tbl) {
1.94 schwarze 1589: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1590: r->tbl->line, r->tbl->pos, "TS");
1.41 schwarze 1591: tbl_end(&r->tbl);
1.27 schwarze 1592: }
1.1 schwarze 1593: }
1594:
1595: /*
1596: * Parse a roff node's type from the input buffer. This must be in the
1597: * form of ".foo xxx" in the usual way.
1598: */
1.166 schwarze 1599: static enum roff_tok
1.87 schwarze 1600: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.1 schwarze 1601: {
1.87 schwarze 1602: char *cp;
1.16 schwarze 1603: const char *mac;
1604: size_t maclen;
1.166 schwarze 1605: enum roff_tok t;
1.1 schwarze 1606:
1.87 schwarze 1607: cp = buf + *pos;
1608:
1609: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.166 schwarze 1610: return TOKEN_NONE;
1.1 schwarze 1611:
1.87 schwarze 1612: mac = cp;
1613: maclen = roff_getname(r, &cp, ln, ppos);
1.1 schwarze 1614:
1.16 schwarze 1615: t = (r->current_string = roff_getstrn(r, mac, maclen))
1.167 schwarze 1616: ? ROFF_USERDEF : roffhash_find(r->reqtab, mac, maclen);
1.1 schwarze 1617:
1.166 schwarze 1618: if (t != TOKEN_NONE)
1.87 schwarze 1619: *pos = cp - buf;
1.1 schwarze 1620:
1.149 schwarze 1621: return t;
1.1 schwarze 1622: }
1623:
1.138 schwarze 1624: /* --- handling of request blocks ----------------------------------------- */
1625:
1.1 schwarze 1626: static enum rofferr
1.2 schwarze 1627: roff_cblock(ROFF_ARGS)
1.1 schwarze 1628: {
1629:
1.2 schwarze 1630: /*
1631: * A block-close `..' should only be invoked as a child of an
1632: * ignore macro, otherwise raise a warning and just ignore it.
1633: */
1634:
1.110 schwarze 1635: if (r->last == NULL) {
1.94 schwarze 1636: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1637: ln, ppos, "..");
1.149 schwarze 1638: return ROFF_IGN;
1.2 schwarze 1639: }
1.1 schwarze 1640:
1.2 schwarze 1641: switch (r->last->tok) {
1.80 schwarze 1642: case ROFF_am:
1.93 schwarze 1643: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.80 schwarze 1644: case ROFF_ami:
1645: case ROFF_de:
1.23 schwarze 1646: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.80 schwarze 1647: case ROFF_dei:
1648: case ROFF_ig:
1.2 schwarze 1649: break;
1650: default:
1.94 schwarze 1651: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1652: ln, ppos, "..");
1.149 schwarze 1653: return ROFF_IGN;
1.2 schwarze 1654: }
1655:
1.110 schwarze 1656: if (buf->buf[pos] != '\0')
1.90 schwarze 1657: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 1658: ".. %s", buf->buf + pos);
1.2 schwarze 1659:
1660: roffnode_pop(r);
1661: roffnode_cleanscope(r);
1.149 schwarze 1662: return ROFF_IGN;
1.2 schwarze 1663:
1664: }
1.1 schwarze 1665:
1.2 schwarze 1666: static void
1667: roffnode_cleanscope(struct roff *r)
1668: {
1.1 schwarze 1669:
1.2 schwarze 1670: while (r->last) {
1.46 schwarze 1671: if (--r->last->endspan != 0)
1.2 schwarze 1672: break;
1673: roffnode_pop(r);
1674: }
1675: }
1.1 schwarze 1676:
1.68 schwarze 1677: static void
1678: roff_ccond(struct roff *r, int ln, int ppos)
1.2 schwarze 1679: {
1.1 schwarze 1680:
1.2 schwarze 1681: if (NULL == r->last) {
1.94 schwarze 1682: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1683: ln, ppos, "\\}");
1.68 schwarze 1684: return;
1.2 schwarze 1685: }
1.1 schwarze 1686:
1.2 schwarze 1687: switch (r->last->tok) {
1.80 schwarze 1688: case ROFF_el:
1689: case ROFF_ie:
1690: case ROFF_if:
1.2 schwarze 1691: break;
1692: default:
1.94 schwarze 1693: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1694: ln, ppos, "\\}");
1.68 schwarze 1695: return;
1.2 schwarze 1696: }
1.1 schwarze 1697:
1.2 schwarze 1698: if (r->last->endspan > -1) {
1.94 schwarze 1699: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1700: ln, ppos, "\\}");
1.68 schwarze 1701: return;
1.2 schwarze 1702: }
1703:
1704: roffnode_pop(r);
1705: roffnode_cleanscope(r);
1.68 schwarze 1706: return;
1.1 schwarze 1707: }
1708:
1709: static enum rofferr
1.2 schwarze 1710: roff_block(ROFF_ARGS)
1.1 schwarze 1711: {
1.93 schwarze 1712: const char *name;
1713: char *iname, *cp;
1.86 schwarze 1714: size_t namesz;
1.16 schwarze 1715:
1.93 schwarze 1716: /* Ignore groff compatibility mode for now. */
1.2 schwarze 1717:
1.110 schwarze 1718: if (tok == ROFF_de1)
1.93 schwarze 1719: tok = ROFF_de;
1.123 schwarze 1720: else if (tok == ROFF_dei1)
1721: tok = ROFF_dei;
1.110 schwarze 1722: else if (tok == ROFF_am1)
1.93 schwarze 1723: tok = ROFF_am;
1.123 schwarze 1724: else if (tok == ROFF_ami1)
1725: tok = ROFF_ami;
1.93 schwarze 1726:
1727: /* Parse the macro name argument. */
1728:
1.110 schwarze 1729: cp = buf->buf + pos;
1730: if (tok == ROFF_ig) {
1.93 schwarze 1731: iname = NULL;
1732: namesz = 0;
1733: } else {
1734: iname = cp;
1735: namesz = roff_getname(r, &cp, ln, ppos);
1736: iname[namesz] = '\0';
1737: }
1.22 schwarze 1738:
1.93 schwarze 1739: /* Resolve the macro name argument if it is indirect. */
1.22 schwarze 1740:
1.110 schwarze 1741: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1742: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.93 schwarze 1743: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1744: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1745: "%.*s", (int)namesz, iname);
1746: namesz = 0;
1747: } else
1748: namesz = strlen(name);
1749: } else
1750: name = iname;
1.22 schwarze 1751:
1.110 schwarze 1752: if (namesz == 0 && tok != ROFF_ig) {
1.93 schwarze 1753: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1.167 schwarze 1754: ln, ppos, roff_name[tok]);
1.149 schwarze 1755: return ROFF_IGN;
1.93 schwarze 1756: }
1.2 schwarze 1757:
1.16 schwarze 1758: roffnode_push(r, tok, name, ln, ppos);
1759:
1760: /*
1761: * At the beginning of a `de' macro, clear the existing string
1762: * with the same name, if there is one. New content will be
1.66 schwarze 1763: * appended from roff_block_text() in multiline mode.
1.16 schwarze 1764: */
1.22 schwarze 1765:
1.110 schwarze 1766: if (tok == ROFF_de || tok == ROFF_dei)
1.86 schwarze 1767: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.2 schwarze 1768:
1.110 schwarze 1769: if (*cp == '\0')
1.149 schwarze 1770: return ROFF_IGN;
1.1 schwarze 1771:
1.93 schwarze 1772: /* Get the custom end marker. */
1.22 schwarze 1773:
1.93 schwarze 1774: iname = cp;
1.86 schwarze 1775: namesz = roff_getname(r, &cp, ln, ppos);
1.93 schwarze 1776:
1777: /* Resolve the end marker if it is indirect. */
1778:
1.110 schwarze 1779: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1780: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.93 schwarze 1781: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1782: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1783: "%.*s", (int)namesz, iname);
1784: namesz = 0;
1785: } else
1786: namesz = strlen(name);
1787: } else
1788: name = iname;
1789:
1.86 schwarze 1790: if (namesz)
1791: r->last->end = mandoc_strndup(name, namesz);
1.2 schwarze 1792:
1.110 schwarze 1793: if (*cp != '\0')
1.90 schwarze 1794: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1.167 schwarze 1795: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.1 schwarze 1796:
1.149 schwarze 1797: return ROFF_IGN;
1.1 schwarze 1798: }
1799:
1800: static enum rofferr
1.2 schwarze 1801: roff_block_sub(ROFF_ARGS)
1.1 schwarze 1802: {
1.166 schwarze 1803: enum roff_tok t;
1.2 schwarze 1804: int i, j;
1805:
1806: /*
1807: * First check whether a custom macro exists at this level. If
1808: * it does, then check against it. This is some of groff's
1809: * stranger behaviours. If we encountered a custom end-scope
1810: * tag and that tag also happens to be a "real" macro, then we
1811: * need to try interpreting it again as a real macro. If it's
1812: * not, then return ignore. Else continue.
1813: */
1814:
1815: if (r->last->end) {
1.35 schwarze 1816: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.110 schwarze 1817: if (buf->buf[i] != r->last->end[j])
1.2 schwarze 1818: break;
1.1 schwarze 1819:
1.110 schwarze 1820: if (r->last->end[j] == '\0' &&
1821: (buf->buf[i] == '\0' ||
1822: buf->buf[i] == ' ' ||
1823: buf->buf[i] == '\t')) {
1.2 schwarze 1824: roffnode_pop(r);
1825: roffnode_cleanscope(r);
1.1 schwarze 1826:
1.110 schwarze 1827: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.35 schwarze 1828: i++;
1829:
1830: pos = i;
1.110 schwarze 1831: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.166 schwarze 1832: TOKEN_NONE)
1.149 schwarze 1833: return ROFF_RERUN;
1834: return ROFF_IGN;
1.2 schwarze 1835: }
1.1 schwarze 1836: }
1837:
1.2 schwarze 1838: /*
1839: * If we have no custom end-query or lookup failed, then try
1840: * pulling it out of the hashtable.
1841: */
1.1 schwarze 1842:
1.110 schwarze 1843: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.1 schwarze 1844:
1.110 schwarze 1845: if (t != ROFF_cblock) {
1846: if (tok != ROFF_ig)
1847: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.149 schwarze 1848: return ROFF_IGN;
1.16 schwarze 1849: }
1.1 schwarze 1850:
1.149 schwarze 1851: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1852: }
1853:
1854: static enum rofferr
1855: roff_block_text(ROFF_ARGS)
1856: {
1857:
1.110 schwarze 1858: if (tok != ROFF_ig)
1859: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.16 schwarze 1860:
1.149 schwarze 1861: return ROFF_IGN;
1.2 schwarze 1862: }
1863:
1864: static enum rofferr
1865: roff_cond_sub(ROFF_ARGS)
1866: {
1.166 schwarze 1867: enum roff_tok t;
1.37 schwarze 1868: char *ep;
1.71 schwarze 1869: int rr;
1.2 schwarze 1870:
1871: rr = r->last->rule;
1.37 schwarze 1872: roffnode_cleanscope(r);
1.110 schwarze 1873: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.2 schwarze 1874:
1.37 schwarze 1875: /*
1.50 schwarze 1876: * Fully handle known macros when they are structurally
1877: * required or when the conditional evaluated to true.
1.5 schwarze 1878: */
1879:
1.166 schwarze 1880: if (t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT))
1.149 schwarze 1881: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.39 schwarze 1882:
1.69 schwarze 1883: /*
1884: * If `\}' occurs on a macro line without a preceding macro,
1885: * drop the line completely.
1886: */
1887:
1.110 schwarze 1888: ep = buf->buf + pos;
1889: if (ep[0] == '\\' && ep[1] == '}')
1.71 schwarze 1890: rr = 0;
1.69 schwarze 1891:
1.50 schwarze 1892: /* Always check for the closing delimiter `\}'. */
1.39 schwarze 1893:
1.110 schwarze 1894: while ((ep = strchr(ep, '\\')) != NULL) {
1895: if (*(++ep) == '}') {
1.70 schwarze 1896: *ep = '&';
1.110 schwarze 1897: roff_ccond(r, ln, ep - buf->buf - 1);
1.70 schwarze 1898: }
1.119 schwarze 1899: if (*ep != '\0')
1900: ++ep;
1.50 schwarze 1901: }
1.149 schwarze 1902: return rr ? ROFF_CONT : ROFF_IGN;
1.2 schwarze 1903: }
1904:
1905: static enum rofferr
1906: roff_cond_text(ROFF_ARGS)
1907: {
1.37 schwarze 1908: char *ep;
1.71 schwarze 1909: int rr;
1.2 schwarze 1910:
1911: rr = r->last->rule;
1.37 schwarze 1912: roffnode_cleanscope(r);
1.1 schwarze 1913:
1.110 schwarze 1914: ep = buf->buf + pos;
1915: while ((ep = strchr(ep, '\\')) != NULL) {
1916: if (*(++ep) == '}') {
1.70 schwarze 1917: *ep = '&';
1.110 schwarze 1918: roff_ccond(r, ln, ep - buf->buf - 1);
1.70 schwarze 1919: }
1.119 schwarze 1920: if (*ep != '\0')
1921: ++ep;
1.2 schwarze 1922: }
1.149 schwarze 1923: return rr ? ROFF_CONT : ROFF_IGN;
1.2 schwarze 1924: }
1925:
1.138 schwarze 1926: /* --- handling of numeric and conditional expressions -------------------- */
1927:
1.77 schwarze 1928: /*
1929: * Parse a single signed integer number. Stop at the first non-digit.
1930: * If there is at least one digit, return success and advance the
1931: * parse point, else return failure and let the parse point unchanged.
1932: * Ignore overflows, treat them just like the C language.
1933: */
1.56 schwarze 1934: static int
1.133 schwarze 1935: roff_getnum(const char *v, int *pos, int *res, int flags)
1.56 schwarze 1936: {
1.133 schwarze 1937: int myres, scaled, n, p;
1.79 schwarze 1938:
1939: if (NULL == res)
1940: res = &myres;
1.56 schwarze 1941:
1942: p = *pos;
1943: n = v[p] == '-';
1.133 schwarze 1944: if (n || v[p] == '+')
1.56 schwarze 1945: p++;
1946:
1.133 schwarze 1947: if (flags & ROFFNUM_WHITE)
1948: while (isspace((unsigned char)v[p]))
1949: p++;
1950:
1.56 schwarze 1951: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.77 schwarze 1952: *res = 10 * *res + v[p] - '0';
1.56 schwarze 1953: if (p == *pos + n)
1954: return 0;
1955:
1956: if (n)
1957: *res = -*res;
1958:
1.126 schwarze 1959: /* Each number may be followed by one optional scaling unit. */
1960:
1961: switch (v[p]) {
1962: case 'f':
1.133 schwarze 1963: scaled = *res * 65536;
1.126 schwarze 1964: break;
1965: case 'i':
1.133 schwarze 1966: scaled = *res * 240;
1.126 schwarze 1967: break;
1968: case 'c':
1.133 schwarze 1969: scaled = *res * 240 / 2.54;
1.126 schwarze 1970: break;
1971: case 'v':
1972: case 'P':
1.133 schwarze 1973: scaled = *res * 40;
1.126 schwarze 1974: break;
1975: case 'm':
1976: case 'n':
1.133 schwarze 1977: scaled = *res * 24;
1.126 schwarze 1978: break;
1979: case 'p':
1.133 schwarze 1980: scaled = *res * 10 / 3;
1.126 schwarze 1981: break;
1982: case 'u':
1.133 schwarze 1983: scaled = *res;
1.126 schwarze 1984: break;
1985: case 'M':
1.133 schwarze 1986: scaled = *res * 6 / 25;
1.126 schwarze 1987: break;
1988: default:
1.133 schwarze 1989: scaled = *res;
1.126 schwarze 1990: p--;
1991: break;
1992: }
1.133 schwarze 1993: if (flags & ROFFNUM_SCALE)
1994: *res = scaled;
1.126 schwarze 1995:
1996: *pos = p + 1;
1.149 schwarze 1997: return 1;
1.56 schwarze 1998: }
1999:
1.71 schwarze 2000: /*
2001: * Evaluate a string comparison condition.
2002: * The first character is the delimiter.
2003: * Succeed if the string up to its second occurrence
2004: * matches the string up to its third occurence.
2005: * Advance the cursor after the third occurrence
2006: * or lacking that, to the end of the line.
2007: */
2008: static int
2009: roff_evalstrcond(const char *v, int *pos)
2010: {
2011: const char *s1, *s2, *s3;
2012: int match;
2013:
2014: match = 0;
2015: s1 = v + *pos; /* initial delimiter */
2016: s2 = s1 + 1; /* for scanning the first string */
2017: s3 = strchr(s2, *s1); /* for scanning the second string */
2018:
2019: if (NULL == s3) /* found no middle delimiter */
2020: goto out;
2021:
2022: while ('\0' != *++s3) {
2023: if (*s2 != *s3) { /* mismatch */
2024: s3 = strchr(s3, *s1);
2025: break;
2026: }
2027: if (*s3 == *s1) { /* found the final delimiter */
2028: match = 1;
2029: break;
2030: }
2031: s2++;
2032: }
2033:
2034: out:
2035: if (NULL == s3)
2036: s3 = strchr(s2, '\0');
1.114 schwarze 2037: else if (*s3 != '\0')
1.71 schwarze 2038: s3++;
2039: *pos = s3 - v;
1.149 schwarze 2040: return match;
1.71 schwarze 2041: }
2042:
1.77 schwarze 2043: /*
2044: * Evaluate an optionally negated single character, numerical,
2045: * or string condition.
2046: */
1.71 schwarze 2047: static int
1.143 schwarze 2048: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.5 schwarze 2049: {
1.143 schwarze 2050: char *cp, *name;
2051: size_t sz;
1.113 schwarze 2052: int number, savepos, wanttrue;
1.5 schwarze 2053:
1.71 schwarze 2054: if ('!' == v[*pos]) {
2055: wanttrue = 0;
2056: (*pos)++;
2057: } else
2058: wanttrue = 1;
2059:
1.5 schwarze 2060: switch (v[*pos]) {
1.112 schwarze 2061: case '\0':
1.149 schwarze 2062: return 0;
1.80 schwarze 2063: case 'n':
2064: case 'o':
1.5 schwarze 2065: (*pos)++;
1.149 schwarze 2066: return wanttrue;
1.80 schwarze 2067: case 'c':
2068: case 'd':
2069: case 'e':
2070: case 't':
1.111 schwarze 2071: case 'v':
1.5 schwarze 2072: (*pos)++;
1.149 schwarze 2073: return !wanttrue;
1.143 schwarze 2074: case 'r':
2075: cp = name = v + ++*pos;
2076: sz = roff_getname(r, &cp, ln, *pos);
2077: *pos = cp - v;
1.149 schwarze 2078: return (sz && roff_hasregn(r, name, sz)) == wanttrue;
1.5 schwarze 2079: default:
2080: break;
2081: }
2082:
1.113 schwarze 2083: savepos = *pos;
1.133 schwarze 2084: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.149 schwarze 2085: return (number > 0) == wanttrue;
1.113 schwarze 2086: else if (*pos == savepos)
1.149 schwarze 2087: return roff_evalstrcond(v, pos) == wanttrue;
1.77 schwarze 2088: else
1.149 schwarze 2089: return 0;
1.5 schwarze 2090: }
2091:
1.2 schwarze 2092: static enum rofferr
1.21 schwarze 2093: roff_line_ignore(ROFF_ARGS)
1.6 schwarze 2094: {
1.30 schwarze 2095:
1.149 schwarze 2096: return ROFF_IGN;
1.21 schwarze 2097: }
2098:
2099: static enum rofferr
1.123 schwarze 2100: roff_insec(ROFF_ARGS)
2101: {
2102:
2103: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
1.167 schwarze 2104: ln, ppos, roff_name[tok]);
1.149 schwarze 2105: return ROFF_IGN;
1.123 schwarze 2106: }
2107:
2108: static enum rofferr
2109: roff_unsupp(ROFF_ARGS)
2110: {
2111:
2112: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
1.167 schwarze 2113: ln, ppos, roff_name[tok]);
1.149 schwarze 2114: return ROFF_IGN;
1.123 schwarze 2115: }
2116:
2117: static enum rofferr
1.2 schwarze 2118: roff_cond(ROFF_ARGS)
2119: {
1.46 schwarze 2120:
2121: roffnode_push(r, tok, NULL, ln, ppos);
1.2 schwarze 2122:
1.80 schwarze 2123: /*
1.35 schwarze 2124: * An `.el' has no conditional body: it will consume the value
2125: * of the current rstack entry set in prior `ie' calls or
1.80 schwarze 2126: * defaults to DENY.
1.35 schwarze 2127: *
2128: * If we're not an `el', however, then evaluate the conditional.
2129: */
1.1 schwarze 2130:
1.110 schwarze 2131: r->last->rule = tok == ROFF_el ?
1.80 schwarze 2132: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.110 schwarze 2133: roff_evalcond(r, ln, buf->buf, &pos);
1.2 schwarze 2134:
1.35 schwarze 2135: /*
2136: * An if-else will put the NEGATION of the current evaluated
2137: * conditional into the stack of rules.
2138: */
2139:
1.110 schwarze 2140: if (tok == ROFF_ie) {
1.96 schwarze 2141: if (r->rstackpos + 1 == r->rstacksz) {
2142: r->rstacksz += 16;
2143: r->rstack = mandoc_reallocarray(r->rstack,
2144: r->rstacksz, sizeof(int));
1.35 schwarze 2145: }
1.71 schwarze 2146: r->rstack[++r->rstackpos] = !r->last->rule;
1.2 schwarze 2147: }
1.5 schwarze 2148:
2149: /* If the parent has false as its rule, then so do we. */
2150:
1.71 schwarze 2151: if (r->last->parent && !r->last->parent->rule)
2152: r->last->rule = 0;
1.5 schwarze 2153:
2154: /*
1.46 schwarze 2155: * Determine scope.
2156: * If there is nothing on the line after the conditional,
2157: * not even whitespace, use next-line scope.
1.5 schwarze 2158: */
1.2 schwarze 2159:
1.110 schwarze 2160: if (buf->buf[pos] == '\0') {
1.46 schwarze 2161: r->last->endspan = 2;
2162: goto out;
2163: }
2164:
1.110 schwarze 2165: while (buf->buf[pos] == ' ')
1.46 schwarze 2166: pos++;
2167:
2168: /* An opening brace requests multiline scope. */
1.2 schwarze 2169:
1.110 schwarze 2170: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.2 schwarze 2171: r->last->endspan = -1;
2172: pos += 2;
1.144 schwarze 2173: while (buf->buf[pos] == ' ')
2174: pos++;
1.46 schwarze 2175: goto out;
1.80 schwarze 2176: }
1.2 schwarze 2177:
2178: /*
1.46 schwarze 2179: * Anything else following the conditional causes
2180: * single-line scope. Warn if the scope contains
2181: * nothing but trailing whitespace.
1.2 schwarze 2182: */
2183:
1.110 schwarze 2184: if (buf->buf[pos] == '\0')
1.89 schwarze 2185: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
1.167 schwarze 2186: ln, ppos, roff_name[tok]);
1.2 schwarze 2187:
1.46 schwarze 2188: r->last->endspan = 1;
1.1 schwarze 2189:
1.46 schwarze 2190: out:
1.2 schwarze 2191: *offs = pos;
1.149 schwarze 2192: return ROFF_RERUN;
1.1 schwarze 2193: }
2194:
1.2 schwarze 2195: static enum rofferr
1.7 schwarze 2196: roff_ds(ROFF_ARGS)
2197: {
1.85 schwarze 2198: char *string;
2199: const char *name;
2200: size_t namesz;
1.10 schwarze 2201:
1.123 schwarze 2202: /* Ignore groff compatibility mode for now. */
2203:
2204: if (tok == ROFF_ds1)
2205: tok = ROFF_ds;
2206: else if (tok == ROFF_as1)
2207: tok = ROFF_as;
2208:
1.10 schwarze 2209: /*
1.85 schwarze 2210: * The first word is the name of the string.
2211: * If it is empty or terminated by an escape sequence,
2212: * abort the `ds' request without defining anything.
1.10 schwarze 2213: */
1.7 schwarze 2214:
1.110 schwarze 2215: name = string = buf->buf + pos;
2216: if (*name == '\0')
1.149 schwarze 2217: return ROFF_IGN;
1.7 schwarze 2218:
1.85 schwarze 2219: namesz = roff_getname(r, &string, ln, pos);
1.110 schwarze 2220: if (name[namesz] == '\\')
1.149 schwarze 2221: return ROFF_IGN;
1.85 schwarze 2222:
2223: /* Read past the initial double-quote, if any. */
1.110 schwarze 2224: if (*string == '"')
1.7 schwarze 2225: string++;
2226:
1.10 schwarze 2227: /* The rest is the value. */
1.85 schwarze 2228: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2229: ROFF_as == tok);
1.149 schwarze 2230: return ROFF_IGN;
1.7 schwarze 2231: }
2232:
1.77 schwarze 2233: /*
2234: * Parse a single operator, one or two characters long.
2235: * If the operator is recognized, return success and advance the
2236: * parse point, else return failure and let the parse point unchanged.
2237: */
2238: static int
2239: roff_getop(const char *v, int *pos, char *res)
2240: {
2241:
2242: *res = v[*pos];
2243:
2244: switch (*res) {
1.80 schwarze 2245: case '+':
2246: case '-':
2247: case '*':
2248: case '/':
2249: case '%':
2250: case '&':
2251: case ':':
1.77 schwarze 2252: break;
2253: case '<':
2254: switch (v[*pos + 1]) {
1.80 schwarze 2255: case '=':
1.77 schwarze 2256: *res = 'l';
2257: (*pos)++;
2258: break;
1.80 schwarze 2259: case '>':
1.77 schwarze 2260: *res = '!';
2261: (*pos)++;
2262: break;
1.80 schwarze 2263: case '?':
1.77 schwarze 2264: *res = 'i';
2265: (*pos)++;
2266: break;
2267: default:
2268: break;
2269: }
2270: break;
2271: case '>':
2272: switch (v[*pos + 1]) {
1.80 schwarze 2273: case '=':
1.77 schwarze 2274: *res = 'g';
2275: (*pos)++;
2276: break;
1.80 schwarze 2277: case '?':
1.77 schwarze 2278: *res = 'a';
2279: (*pos)++;
2280: break;
2281: default:
2282: break;
2283: }
2284: break;
2285: case '=':
2286: if ('=' == v[*pos + 1])
2287: (*pos)++;
2288: break;
2289: default:
1.149 schwarze 2290: return 0;
1.77 schwarze 2291: }
2292: (*pos)++;
2293:
1.149 schwarze 2294: return *res;
1.77 schwarze 2295: }
2296:
2297: /*
2298: * Evaluate either a parenthesized numeric expression
2299: * or a single signed integer number.
2300: */
2301: static int
1.106 schwarze 2302: roff_evalpar(struct roff *r, int ln,
1.133 schwarze 2303: const char *v, int *pos, int *res, int flags)
1.77 schwarze 2304: {
2305:
2306: if ('(' != v[*pos])
1.149 schwarze 2307: return roff_getnum(v, pos, res, flags);
1.77 schwarze 2308:
2309: (*pos)++;
1.133 schwarze 2310: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.149 schwarze 2311: return 0;
1.77 schwarze 2312:
1.79 schwarze 2313: /*
2314: * Omission of the closing parenthesis
2315: * is an error in validation mode,
2316: * but ignored in evaluation mode.
2317: */
2318:
1.77 schwarze 2319: if (')' == v[*pos])
2320: (*pos)++;
1.79 schwarze 2321: else if (NULL == res)
1.149 schwarze 2322: return 0;
1.77 schwarze 2323:
1.149 schwarze 2324: return 1;
1.77 schwarze 2325: }
2326:
2327: /*
2328: * Evaluate a complete numeric expression.
2329: * Proceed left to right, there is no concept of precedence.
2330: */
2331: static int
1.106 schwarze 2332: roff_evalnum(struct roff *r, int ln, const char *v,
1.133 schwarze 2333: int *pos, int *res, int flags)
1.77 schwarze 2334: {
2335: int mypos, operand2;
2336: char operator;
2337:
2338: if (NULL == pos) {
2339: mypos = 0;
2340: pos = &mypos;
2341: }
2342:
1.133 schwarze 2343: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2344: while (isspace((unsigned char)v[*pos]))
2345: (*pos)++;
2346:
1.133 schwarze 2347: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.149 schwarze 2348: return 0;
1.77 schwarze 2349:
2350: while (1) {
1.133 schwarze 2351: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2352: while (isspace((unsigned char)v[*pos]))
2353: (*pos)++;
2354:
2355: if ( ! roff_getop(v, pos, &operator))
2356: break;
2357:
1.133 schwarze 2358: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2359: while (isspace((unsigned char)v[*pos]))
2360: (*pos)++;
2361:
1.133 schwarze 2362: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.149 schwarze 2363: return 0;
1.77 schwarze 2364:
1.133 schwarze 2365: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2366: while (isspace((unsigned char)v[*pos]))
2367: (*pos)++;
1.79 schwarze 2368:
2369: if (NULL == res)
2370: continue;
1.77 schwarze 2371:
2372: switch (operator) {
1.80 schwarze 2373: case '+':
1.77 schwarze 2374: *res += operand2;
2375: break;
1.80 schwarze 2376: case '-':
1.77 schwarze 2377: *res -= operand2;
2378: break;
1.80 schwarze 2379: case '*':
1.77 schwarze 2380: *res *= operand2;
2381: break;
1.80 schwarze 2382: case '/':
1.116 schwarze 2383: if (operand2 == 0) {
1.106 schwarze 2384: mandoc_msg(MANDOCERR_DIVZERO,
2385: r->parse, ln, *pos, v);
2386: *res = 0;
2387: break;
2388: }
1.77 schwarze 2389: *res /= operand2;
2390: break;
1.80 schwarze 2391: case '%':
1.116 schwarze 2392: if (operand2 == 0) {
2393: mandoc_msg(MANDOCERR_DIVZERO,
2394: r->parse, ln, *pos, v);
2395: *res = 0;
2396: break;
2397: }
1.77 schwarze 2398: *res %= operand2;
2399: break;
1.80 schwarze 2400: case '<':
1.77 schwarze 2401: *res = *res < operand2;
2402: break;
1.80 schwarze 2403: case '>':
1.77 schwarze 2404: *res = *res > operand2;
2405: break;
1.80 schwarze 2406: case 'l':
1.77 schwarze 2407: *res = *res <= operand2;
2408: break;
1.80 schwarze 2409: case 'g':
1.77 schwarze 2410: *res = *res >= operand2;
2411: break;
1.80 schwarze 2412: case '=':
1.77 schwarze 2413: *res = *res == operand2;
2414: break;
1.80 schwarze 2415: case '!':
1.77 schwarze 2416: *res = *res != operand2;
2417: break;
1.80 schwarze 2418: case '&':
1.77 schwarze 2419: *res = *res && operand2;
2420: break;
1.80 schwarze 2421: case ':':
1.77 schwarze 2422: *res = *res || operand2;
2423: break;
1.80 schwarze 2424: case 'i':
1.77 schwarze 2425: if (operand2 < *res)
2426: *res = operand2;
2427: break;
1.80 schwarze 2428: case 'a':
1.77 schwarze 2429: if (operand2 > *res)
2430: *res = operand2;
2431: break;
2432: default:
2433: abort();
2434: }
2435: }
1.149 schwarze 2436: return 1;
1.77 schwarze 2437: }
2438:
1.138 schwarze 2439: /* --- register management ------------------------------------------------ */
2440:
1.52 schwarze 2441: void
1.60 schwarze 2442: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.41 schwarze 2443: {
1.52 schwarze 2444: struct roffreg *reg;
2445:
2446: /* Search for an existing register with the same name. */
2447: reg = r->regtab;
2448:
2449: while (reg && strcmp(name, reg->key.p))
2450: reg = reg->next;
1.41 schwarze 2451:
1.52 schwarze 2452: if (NULL == reg) {
2453: /* Create a new register. */
2454: reg = mandoc_malloc(sizeof(struct roffreg));
2455: reg->key.p = mandoc_strdup(name);
2456: reg->key.sz = strlen(name);
1.60 schwarze 2457: reg->val = 0;
1.52 schwarze 2458: reg->next = r->regtab;
2459: r->regtab = reg;
2460: }
2461:
1.60 schwarze 2462: if ('+' == sign)
2463: reg->val += val;
2464: else if ('-' == sign)
2465: reg->val -= val;
2466: else
2467: reg->val = val;
1.41 schwarze 2468: }
2469:
1.65 schwarze 2470: /*
2471: * Handle some predefined read-only number registers.
2472: * For now, return -1 if the requested register is not predefined;
2473: * in case a predefined read-only register having the value -1
2474: * were to turn up, another special value would have to be chosen.
2475: */
2476: static int
1.145 schwarze 2477: roff_getregro(const struct roff *r, const char *name)
1.65 schwarze 2478: {
2479:
2480: switch (*name) {
1.145 schwarze 2481: case '$': /* Number of arguments of the last macro evaluated. */
1.149 schwarze 2482: return r->argc;
1.80 schwarze 2483: case 'A': /* ASCII approximation mode is always off. */
1.149 schwarze 2484: return 0;
1.80 schwarze 2485: case 'g': /* Groff compatibility mode is always on. */
1.149 schwarze 2486: return 1;
1.80 schwarze 2487: case 'H': /* Fixed horizontal resolution. */
1.149 schwarze 2488: return 24;
1.80 schwarze 2489: case 'j': /* Always adjust left margin only. */
1.149 schwarze 2490: return 0;
1.80 schwarze 2491: case 'T': /* Some output device is always defined. */
1.149 schwarze 2492: return 1;
1.80 schwarze 2493: case 'V': /* Fixed vertical resolution. */
1.149 schwarze 2494: return 40;
1.65 schwarze 2495: default:
1.149 schwarze 2496: return -1;
1.65 schwarze 2497: }
2498: }
2499:
1.53 schwarze 2500: int
1.52 schwarze 2501: roff_getreg(const struct roff *r, const char *name)
1.41 schwarze 2502: {
1.52 schwarze 2503: struct roffreg *reg;
1.65 schwarze 2504: int val;
2505:
2506: if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) {
1.145 schwarze 2507: val = roff_getregro(r, name + 1);
1.65 schwarze 2508: if (-1 != val)
1.149 schwarze 2509: return val;
1.65 schwarze 2510: }
1.52 schwarze 2511:
2512: for (reg = r->regtab; reg; reg = reg->next)
2513: if (0 == strcmp(name, reg->key.p))
1.149 schwarze 2514: return reg->val;
1.53 schwarze 2515:
1.149 schwarze 2516: return 0;
1.53 schwarze 2517: }
2518:
2519: static int
2520: roff_getregn(const struct roff *r, const char *name, size_t len)
2521: {
2522: struct roffreg *reg;
1.65 schwarze 2523: int val;
2524:
2525: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2526: val = roff_getregro(r, name + 1);
1.65 schwarze 2527: if (-1 != val)
1.149 schwarze 2528: return val;
1.65 schwarze 2529: }
1.53 schwarze 2530:
2531: for (reg = r->regtab; reg; reg = reg->next)
2532: if (len == reg->key.sz &&
2533: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 2534: return reg->val;
1.143 schwarze 2535:
1.149 schwarze 2536: return 0;
1.143 schwarze 2537: }
2538:
2539: static int
2540: roff_hasregn(const struct roff *r, const char *name, size_t len)
2541: {
2542: struct roffreg *reg;
2543: int val;
2544:
2545: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2546: val = roff_getregro(r, name + 1);
1.143 schwarze 2547: if (-1 != val)
1.149 schwarze 2548: return 1;
1.143 schwarze 2549: }
2550:
2551: for (reg = r->regtab; reg; reg = reg->next)
2552: if (len == reg->key.sz &&
2553: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 2554: return 1;
1.41 schwarze 2555:
1.149 schwarze 2556: return 0;
1.41 schwarze 2557: }
2558:
1.52 schwarze 2559: static void
2560: roff_freereg(struct roffreg *reg)
1.41 schwarze 2561: {
1.52 schwarze 2562: struct roffreg *old_reg;
1.41 schwarze 2563:
1.52 schwarze 2564: while (NULL != reg) {
2565: free(reg->key.p);
2566: old_reg = reg;
2567: reg = reg->next;
2568: free(old_reg);
2569: }
1.41 schwarze 2570: }
1.7 schwarze 2571:
2572: static enum rofferr
1.6 schwarze 2573: roff_nr(ROFF_ARGS)
1.1 schwarze 2574: {
1.85 schwarze 2575: char *key, *val;
2576: size_t keysz;
1.37 schwarze 2577: int iv;
1.60 schwarze 2578: char sign;
1.6 schwarze 2579:
1.110 schwarze 2580: key = val = buf->buf + pos;
2581: if (*key == '\0')
1.149 schwarze 2582: return ROFF_IGN;
1.85 schwarze 2583:
2584: keysz = roff_getname(r, &val, ln, pos);
1.110 schwarze 2585: if (key[keysz] == '\\')
1.149 schwarze 2586: return ROFF_IGN;
1.85 schwarze 2587: key[keysz] = '\0';
1.6 schwarze 2588:
1.60 schwarze 2589: sign = *val;
1.110 schwarze 2590: if (sign == '+' || sign == '-')
1.60 schwarze 2591: val++;
2592:
1.133 schwarze 2593: if (roff_evalnum(r, ln, val, NULL, &iv, ROFFNUM_SCALE))
1.77 schwarze 2594: roff_setreg(r, key, iv, sign);
1.1 schwarze 2595:
1.149 schwarze 2596: return ROFF_IGN;
1.76 schwarze 2597: }
2598:
2599: static enum rofferr
2600: roff_rr(ROFF_ARGS)
2601: {
2602: struct roffreg *reg, **prev;
1.85 schwarze 2603: char *name, *cp;
2604: size_t namesz;
1.76 schwarze 2605:
1.110 schwarze 2606: name = cp = buf->buf + pos;
2607: if (*name == '\0')
1.149 schwarze 2608: return ROFF_IGN;
1.85 schwarze 2609: namesz = roff_getname(r, &cp, ln, pos);
2610: name[namesz] = '\0';
1.76 schwarze 2611:
2612: prev = &r->regtab;
2613: while (1) {
2614: reg = *prev;
1.110 schwarze 2615: if (reg == NULL || !strcmp(name, reg->key.p))
1.76 schwarze 2616: break;
2617: prev = ®->next;
2618: }
1.110 schwarze 2619: if (reg != NULL) {
1.76 schwarze 2620: *prev = reg->next;
2621: free(reg->key.p);
2622: free(reg);
2623: }
1.149 schwarze 2624: return ROFF_IGN;
1.29 schwarze 2625: }
2626:
1.138 schwarze 2627: /* --- handler functions for roff requests -------------------------------- */
2628:
1.29 schwarze 2629: static enum rofferr
2630: roff_rm(ROFF_ARGS)
2631: {
2632: const char *name;
2633: char *cp;
1.85 schwarze 2634: size_t namesz;
1.29 schwarze 2635:
1.110 schwarze 2636: cp = buf->buf + pos;
2637: while (*cp != '\0') {
1.85 schwarze 2638: name = cp;
1.110 schwarze 2639: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.85 schwarze 2640: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.110 schwarze 2641: if (name[namesz] == '\\')
1.85 schwarze 2642: break;
1.29 schwarze 2643: }
1.149 schwarze 2644: return ROFF_IGN;
1.51 schwarze 2645: }
2646:
2647: static enum rofferr
2648: roff_it(ROFF_ARGS)
2649: {
2650: int iv;
2651:
2652: /* Parse the number of lines. */
1.133 schwarze 2653:
2654: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.95 schwarze 2655: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.110 schwarze 2656: ln, ppos, buf->buf + 1);
1.149 schwarze 2657: return ROFF_IGN;
1.51 schwarze 2658: }
2659:
1.134 schwarze 2660: while (isspace((unsigned char)buf->buf[pos]))
2661: pos++;
2662:
2663: /*
2664: * Arm the input line trap.
2665: * Special-casing "an-trap" is an ugly workaround to cope
2666: * with DocBook stupidly fiddling with man(7) internals.
2667: */
1.133 schwarze 2668:
1.51 schwarze 2669: roffit_lines = iv;
1.134 schwarze 2670: roffit_macro = mandoc_strdup(iv != 1 ||
2671: strcmp(buf->buf + pos, "an-trap") ?
2672: buf->buf + pos : "br");
1.149 schwarze 2673: return ROFF_IGN;
1.47 schwarze 2674: }
2675:
2676: static enum rofferr
2677: roff_Dd(ROFF_ARGS)
2678: {
2679: const char *const *cp;
2680:
1.99 schwarze 2681: if ((r->options & (MPARSE_MDOC | MPARSE_QUICK)) == 0)
1.47 schwarze 2682: for (cp = __mdoc_reserved; *cp; cp++)
2683: roff_setstr(r, *cp, NULL, 0);
2684:
1.99 schwarze 2685: if (r->format == 0)
2686: r->format = MPARSE_MDOC;
2687:
1.149 schwarze 2688: return ROFF_CONT;
1.47 schwarze 2689: }
2690:
2691: static enum rofferr
2692: roff_TH(ROFF_ARGS)
2693: {
2694: const char *const *cp;
2695:
1.99 schwarze 2696: if ((r->options & MPARSE_QUICK) == 0)
1.47 schwarze 2697: for (cp = __man_reserved; *cp; cp++)
2698: roff_setstr(r, *cp, NULL, 0);
2699:
1.99 schwarze 2700: if (r->format == 0)
2701: r->format = MPARSE_MAN;
2702:
1.149 schwarze 2703: return ROFF_CONT;
1.14 schwarze 2704: }
2705:
2706: static enum rofferr
1.27 schwarze 2707: roff_TE(ROFF_ARGS)
2708: {
2709:
2710: if (NULL == r->tbl)
1.94 schwarze 2711: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2712: ln, ppos, "TE");
1.130 schwarze 2713: else if ( ! tbl_end(&r->tbl)) {
2714: free(buf->buf);
2715: buf->buf = mandoc_strdup(".sp");
2716: buf->sz = 4;
1.149 schwarze 2717: return ROFF_REPARSE;
1.130 schwarze 2718: }
1.149 schwarze 2719: return ROFF_IGN;
1.27 schwarze 2720: }
2721:
2722: static enum rofferr
2723: roff_T_(ROFF_ARGS)
2724: {
2725:
2726: if (NULL == r->tbl)
1.94 schwarze 2727: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2728: ln, ppos, "T&");
1.27 schwarze 2729: else
1.168 schwarze 2730: tbl_restart(ln, ppos, r->tbl);
1.27 schwarze 2731:
1.149 schwarze 2732: return ROFF_IGN;
1.27 schwarze 2733: }
2734:
1.102 schwarze 2735: /*
2736: * Handle in-line equation delimiters.
2737: */
2738: static enum rofferr
1.110 schwarze 2739: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.41 schwarze 2740: {
1.105 schwarze 2741: char *cp1, *cp2;
2742: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.41 schwarze 2743:
1.102 schwarze 2744: /*
2745: * Outside equations, look for an opening delimiter.
2746: * If we are inside an equation, we already know it is
2747: * in-line, or this function wouldn't have been called;
2748: * so look for a closing delimiter.
2749: */
2750:
1.110 schwarze 2751: cp1 = buf->buf + pos;
1.102 schwarze 2752: cp2 = strchr(cp1, r->eqn == NULL ?
2753: r->last_eqn->odelim : r->last_eqn->cdelim);
2754: if (cp2 == NULL)
1.149 schwarze 2755: return ROFF_CONT;
1.102 schwarze 2756:
1.105 schwarze 2757: *cp2++ = '\0';
2758: bef_pr = bef_nl = aft_nl = aft_pr = "";
2759:
2760: /* Handle preceding text, protecting whitespace. */
2761:
1.110 schwarze 2762: if (*buf->buf != '\0') {
1.105 schwarze 2763: if (r->eqn == NULL)
2764: bef_pr = "\\&";
2765: bef_nl = "\n";
2766: }
2767:
2768: /*
2769: * Prepare replacing the delimiter with an equation macro
2770: * and drop leading white space from the equation.
2771: */
1.102 schwarze 2772:
1.105 schwarze 2773: if (r->eqn == NULL) {
2774: while (*cp2 == ' ')
2775: cp2++;
2776: mac = ".EQ";
2777: } else
2778: mac = ".EN";
2779:
2780: /* Handle following text, protecting whitespace. */
2781:
2782: if (*cp2 != '\0') {
2783: aft_nl = "\n";
2784: if (r->eqn != NULL)
2785: aft_pr = "\\&";
2786: }
2787:
2788: /* Do the actual replacement. */
2789:
1.110 schwarze 2790: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.105 schwarze 2791: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.110 schwarze 2792: free(buf->buf);
2793: buf->buf = cp1;
1.102 schwarze 2794:
2795: /* Toggle the in-line state of the eqn subsystem. */
2796:
2797: r->eqn_inline = r->eqn == NULL;
1.149 schwarze 2798: return ROFF_REPARSE;
1.41 schwarze 2799: }
2800:
1.107 schwarze 2801: static enum rofferr
2802: roff_EQ(ROFF_ARGS)
1.32 schwarze 2803: {
1.41 schwarze 2804: struct eqn_node *e;
1.32 schwarze 2805:
1.110 schwarze 2806: assert(r->eqn == NULL);
1.107 schwarze 2807: e = eqn_alloc(ppos, ln, r->parse);
1.32 schwarze 2808:
1.102 schwarze 2809: if (r->last_eqn) {
1.32 schwarze 2810: r->last_eqn->next = e;
1.102 schwarze 2811: e->delim = r->last_eqn->delim;
2812: e->odelim = r->last_eqn->odelim;
2813: e->cdelim = r->last_eqn->cdelim;
2814: } else
1.32 schwarze 2815: r->first_eqn = r->last_eqn = e;
2816:
2817: r->eqn = r->last_eqn = e;
1.41 schwarze 2818:
1.110 schwarze 2819: if (buf->buf[pos] != '\0')
1.107 schwarze 2820: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 2821: ".EQ %s", buf->buf + pos);
1.41 schwarze 2822:
1.149 schwarze 2823: return ROFF_IGN;
1.32 schwarze 2824: }
2825:
2826: static enum rofferr
2827: roff_EN(ROFF_ARGS)
2828: {
2829:
1.94 schwarze 2830: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
1.149 schwarze 2831: return ROFF_IGN;
1.32 schwarze 2832: }
2833:
2834: static enum rofferr
1.27 schwarze 2835: roff_TS(ROFF_ARGS)
2836: {
1.49 schwarze 2837: struct tbl_node *tbl;
1.27 schwarze 2838:
2839: if (r->tbl) {
1.94 schwarze 2840: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
2841: ln, ppos, "TS breaks TS");
1.41 schwarze 2842: tbl_end(&r->tbl);
1.27 schwarze 2843: }
2844:
1.49 schwarze 2845: tbl = tbl_alloc(ppos, ln, r->parse);
1.27 schwarze 2846:
2847: if (r->last_tbl)
1.49 schwarze 2848: r->last_tbl->next = tbl;
1.27 schwarze 2849: else
1.49 schwarze 2850: r->first_tbl = r->last_tbl = tbl;
1.27 schwarze 2851:
1.49 schwarze 2852: r->tbl = r->last_tbl = tbl;
1.169 schwarze 2853: return ROFF_IGN;
2854: }
2855:
2856: static enum rofferr
2857: roff_onearg(ROFF_ARGS)
2858: {
2859: struct roff_node *n;
2860: char *cp;
1.177 ! schwarze 2861: int npos;
1.169 schwarze 2862:
1.174 schwarze 2863: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
2864: (tok == ROFF_sp || tok == ROFF_ti))
2865: man_breakscope(r->man, tok);
2866:
1.177 ! schwarze 2867: if (tok == ROFF_ce && roffce_node != NULL) {
! 2868: r->man->last = roffce_node;
! 2869: r->man->next = ROFF_NEXT_SIBLING;
! 2870: }
! 2871:
1.169 schwarze 2872: roff_elem_alloc(r->man, ln, ppos, tok);
2873: n = r->man->last;
2874:
2875: cp = buf->buf + pos;
2876: if (*cp != '\0') {
2877: while (*cp != '\0' && *cp != ' ')
2878: cp++;
2879: while (*cp == ' ')
2880: *cp++ = '\0';
2881: if (*cp != '\0')
2882: mandoc_vmsg(MANDOCERR_ARG_EXCESS,
2883: r->parse, ln, cp - buf->buf,
2884: "%s ... %s", roff_name[tok], cp);
2885: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.172 schwarze 2886: }
2887:
1.177 ! schwarze 2888: if (tok == ROFF_ce) {
! 2889: if (r->man->last->tok == ROFF_ce) {
! 2890: roff_word_alloc(r->man, ln, pos, "1");
! 2891: r->man->last->flags |= NODE_NOSRC;
! 2892: }
! 2893: npos = 0;
! 2894: if (roff_evalnum(r, ln, r->man->last->string, &npos,
! 2895: &roffce_lines, 0) == 0) {
! 2896: mandoc_vmsg(MANDOCERR_CE_NONUM,
! 2897: r->parse, ln, pos, "ce %s", buf->buf + pos);
! 2898: roffce_lines = 1;
! 2899: }
! 2900: if (roffce_lines < 1) {
! 2901: r->man->last = r->man->last->parent;
! 2902: roffce_node = NULL;
! 2903: roffce_lines = 0;
! 2904: } else
! 2905: roffce_node = r->man->last->parent;
! 2906: } else {
! 2907: n->flags |= NODE_VALID | NODE_ENDED;
! 2908: r->man->last = n;
! 2909: }
! 2910: n->flags |= NODE_LINE;
1.172 schwarze 2911: r->man->next = ROFF_NEXT_SIBLING;
2912: return ROFF_IGN;
2913: }
2914:
2915: static enum rofferr
2916: roff_manyarg(ROFF_ARGS)
2917: {
2918: struct roff_node *n;
2919: char *sp, *ep;
2920:
2921: roff_elem_alloc(r->man, ln, ppos, tok);
2922: n = r->man->last;
2923:
2924: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
2925: while (*ep != '\0' && *ep != ' ')
2926: ep++;
2927: while (*ep == ' ')
2928: *ep++ = '\0';
2929: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.169 schwarze 2930: }
2931:
2932: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
2933: r->man->last = n;
2934: r->man->next = ROFF_NEXT_SIBLING;
1.149 schwarze 2935: return ROFF_IGN;
1.123 schwarze 2936: }
2937:
2938: static enum rofferr
1.168 schwarze 2939: roff_br(ROFF_ARGS)
1.123 schwarze 2940: {
1.174 schwarze 2941: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
2942: man_breakscope(r->man, ROFF_br);
1.168 schwarze 2943: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
2944: if (buf->buf[pos] != '\0')
2945: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
2946: "%s %s", roff_name[tok], buf->buf + pos);
2947: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
2948: r->man->next = ROFF_NEXT_SIBLING;
2949: return ROFF_IGN;
1.27 schwarze 2950: }
2951:
2952: static enum rofferr
1.48 schwarze 2953: roff_cc(ROFF_ARGS)
2954: {
2955: const char *p;
2956:
1.110 schwarze 2957: p = buf->buf + pos;
1.48 schwarze 2958:
1.110 schwarze 2959: if (*p == '\0' || (r->control = *p++) == '.')
1.175 schwarze 2960: r->control = '\0';
1.48 schwarze 2961:
1.110 schwarze 2962: if (*p != '\0')
1.132 schwarze 2963: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
2964: ln, p - buf->buf, "cc ... %s", p);
1.48 schwarze 2965:
1.149 schwarze 2966: return ROFF_IGN;
1.48 schwarze 2967: }
2968:
2969: static enum rofferr
1.175 schwarze 2970: roff_ec(ROFF_ARGS)
2971: {
2972: const char *p;
2973:
2974: p = buf->buf + pos;
2975: if (*p == '\0')
2976: r->escape = '\\';
2977: else {
2978: r->escape = *p;
2979: if (*++p != '\0')
2980: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
2981: ln, p - buf->buf, "ec ... %s", p);
2982: }
2983: return ROFF_IGN;
2984: }
2985:
2986: static enum rofferr
2987: roff_eo(ROFF_ARGS)
2988: {
2989: r->escape = '\0';
2990: if (buf->buf[pos] != '\0')
2991: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse,
2992: ln, pos, "eo %s", buf->buf + pos);
2993: return ROFF_IGN;
2994: }
2995:
2996: static enum rofferr
1.42 schwarze 2997: roff_tr(ROFF_ARGS)
2998: {
2999: const char *p, *first, *second;
3000: size_t fsz, ssz;
3001: enum mandoc_esc esc;
3002:
1.110 schwarze 3003: p = buf->buf + pos;
1.42 schwarze 3004:
1.110 schwarze 3005: if (*p == '\0') {
1.132 schwarze 3006: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.149 schwarze 3007: return ROFF_IGN;
1.42 schwarze 3008: }
3009:
1.110 schwarze 3010: while (*p != '\0') {
1.42 schwarze 3011: fsz = ssz = 1;
3012:
3013: first = p++;
1.110 schwarze 3014: if (*first == '\\') {
1.42 schwarze 3015: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3016: if (esc == ESCAPE_ERROR) {
1.92 schwarze 3017: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 3018: ln, (int)(p - buf->buf), first);
1.149 schwarze 3019: return ROFF_IGN;
1.42 schwarze 3020: }
3021: fsz = (size_t)(p - first);
3022: }
3023:
3024: second = p++;
1.110 schwarze 3025: if (*second == '\\') {
1.42 schwarze 3026: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3027: if (esc == ESCAPE_ERROR) {
1.92 schwarze 3028: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 3029: ln, (int)(p - buf->buf), second);
1.149 schwarze 3030: return ROFF_IGN;
1.42 schwarze 3031: }
3032: ssz = (size_t)(p - second);
1.110 schwarze 3033: } else if (*second == '\0') {
1.132 schwarze 3034: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
3035: ln, first - buf->buf, "tr %s", first);
1.42 schwarze 3036: second = " ";
3037: p--;
3038: }
3039:
3040: if (fsz > 1) {
1.80 schwarze 3041: roff_setstrn(&r->xmbtab, first, fsz,
3042: second, ssz, 0);
1.42 schwarze 3043: continue;
3044: }
3045:
1.110 schwarze 3046: if (r->xtab == NULL)
1.80 schwarze 3047: r->xtab = mandoc_calloc(128,
3048: sizeof(struct roffstr));
1.42 schwarze 3049:
3050: free(r->xtab[(int)*first].p);
3051: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3052: r->xtab[(int)*first].sz = ssz;
3053: }
3054:
1.149 schwarze 3055: return ROFF_IGN;
1.42 schwarze 3056: }
3057:
3058: static enum rofferr
1.14 schwarze 3059: roff_so(ROFF_ARGS)
3060: {
1.121 schwarze 3061: char *name, *cp;
1.15 schwarze 3062:
1.110 schwarze 3063: name = buf->buf + pos;
1.97 schwarze 3064: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.14 schwarze 3065:
1.22 schwarze 3066: /*
3067: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3068: * opening anything that's not in our cwd or anything beneath
3069: * it. Thus, explicitly disallow traversing up the file-system
3070: * or using absolute paths.
3071: */
3072:
1.110 schwarze 3073: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.83 schwarze 3074: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
3075: ".so %s", name);
1.121 schwarze 3076: buf->sz = mandoc_asprintf(&cp,
3077: ".sp\nSee the file %s.\n.sp", name) + 1;
3078: free(buf->buf);
3079: buf->buf = cp;
3080: *offs = 0;
1.149 schwarze 3081: return ROFF_REPARSE;
1.14 schwarze 3082: }
3083:
3084: *offs = pos;
1.149 schwarze 3085: return ROFF_SO;
1.7 schwarze 3086: }
3087:
1.138 schwarze 3088: /* --- user defined strings and macros ------------------------------------ */
3089:
1.16 schwarze 3090: static enum rofferr
3091: roff_userdef(ROFF_ARGS)
1.12 schwarze 3092: {
1.135 schwarze 3093: const char *arg[9], *ap;
1.16 schwarze 3094: char *cp, *n1, *n2;
1.164 schwarze 3095: int expand_count, i, ib, ie;
1.135 schwarze 3096: size_t asz, rsz;
1.12 schwarze 3097:
1.16 schwarze 3098: /*
3099: * Collect pointers to macro argument strings
1.61 schwarze 3100: * and NUL-terminate them.
1.16 schwarze 3101: */
1.135 schwarze 3102:
1.145 schwarze 3103: r->argc = 0;
1.110 schwarze 3104: cp = buf->buf + pos;
1.145 schwarze 3105: for (i = 0; i < 9; i++) {
3106: if (*cp == '\0')
3107: arg[i] = "";
3108: else {
3109: arg[i] = mandoc_getarg(r->parse, &cp, ln, &pos);
3110: r->argc = i + 1;
3111: }
3112: }
1.16 schwarze 3113:
3114: /*
3115: * Expand macro arguments.
1.12 schwarze 3116: */
1.135 schwarze 3117:
3118: buf->sz = strlen(r->current_string) + 1;
1.164 schwarze 3119: n1 = n2 = cp = mandoc_malloc(buf->sz);
1.135 schwarze 3120: memcpy(n1, r->current_string, buf->sz);
1.164 schwarze 3121: expand_count = 0;
1.135 schwarze 3122: while (*cp != '\0') {
3123:
3124: /* Scan ahead for the next argument invocation. */
3125:
3126: if (*cp++ != '\\')
3127: continue;
3128: if (*cp++ != '$')
3129: continue;
1.146 schwarze 3130: if (*cp == '*') { /* \\$* inserts all arguments */
3131: ib = 0;
3132: ie = r->argc - 1;
3133: } else { /* \\$1 .. \\$9 insert one argument */
3134: ib = ie = *cp - '1';
3135: if (ib < 0 || ib > 8)
3136: continue;
3137: }
1.135 schwarze 3138: cp -= 2;
1.164 schwarze 3139:
3140: /*
3141: * Prevent infinite recursion.
3142: */
3143:
3144: if (cp >= n2)
3145: expand_count = 1;
3146: else if (++expand_count > EXPAND_LIMIT) {
3147: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
3148: ln, (int)(cp - n1), NULL);
1.165 schwarze 3149: free(buf->buf);
3150: buf->buf = n1;
1.164 schwarze 3151: return ROFF_IGN;
3152: }
1.135 schwarze 3153:
3154: /*
3155: * Determine the size of the expanded argument,
3156: * taking escaping of quotes into account.
3157: */
3158:
1.146 schwarze 3159: asz = ie > ib ? ie - ib : 0; /* for blanks */
3160: for (i = ib; i <= ie; i++) {
3161: for (ap = arg[i]; *ap != '\0'; ap++) {
3162: asz++;
3163: if (*ap == '"')
3164: asz += 3;
3165: }
1.135 schwarze 3166: }
3167: if (asz != 3) {
3168:
3169: /*
3170: * Determine the size of the rest of the
3171: * unexpanded macro, including the NUL.
3172: */
3173:
3174: rsz = buf->sz - (cp - n1) - 3;
3175:
3176: /*
3177: * When shrinking, move before
3178: * releasing the storage.
3179: */
3180:
3181: if (asz < 3)
3182: memmove(cp + asz, cp + 3, rsz);
3183:
3184: /*
3185: * Resize the storage for the macro
3186: * and readjust the parse pointer.
3187: */
3188:
3189: buf->sz += asz - 3;
3190: n2 = mandoc_realloc(n1, buf->sz);
3191: cp = n2 + (cp - n1);
3192: n1 = n2;
3193:
3194: /*
3195: * When growing, make room
3196: * for the expanded argument.
3197: */
3198:
3199: if (asz > 3)
3200: memmove(cp + asz, cp + 3, rsz);
3201: }
3202:
3203: /* Copy the expanded argument, escaping quotes. */
3204:
3205: n2 = cp;
1.146 schwarze 3206: for (i = ib; i <= ie; i++) {
3207: for (ap = arg[i]; *ap != '\0'; ap++) {
3208: if (*ap == '"') {
3209: memcpy(n2, "\\(dq", 4);
3210: n2 += 4;
3211: } else
3212: *n2++ = *ap;
3213: }
3214: if (i < ie)
3215: *n2++ = ' ';
1.16 schwarze 3216: }
1.12 schwarze 3217: }
3218:
1.16 schwarze 3219: /*
3220: * Replace the macro invocation
3221: * by the expanded macro.
3222: */
1.135 schwarze 3223:
1.110 schwarze 3224: free(buf->buf);
3225: buf->buf = n1;
1.120 schwarze 3226: *offs = 0;
1.16 schwarze 3227:
1.149 schwarze 3228: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
3229: ROFF_REPARSE : ROFF_APPEND;
1.12 schwarze 3230: }
1.28 schwarze 3231:
1.85 schwarze 3232: static size_t
1.28 schwarze 3233: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3234: {
3235: char *name, *cp;
1.85 schwarze 3236: size_t namesz;
1.28 schwarze 3237:
3238: name = *cpp;
3239: if ('\0' == *name)
1.149 schwarze 3240: return 0;
1.28 schwarze 3241:
1.85 schwarze 3242: /* Read until end of name and terminate it with NUL. */
3243: for (cp = name; 1; cp++) {
3244: if ('\0' == *cp || ' ' == *cp) {
3245: namesz = cp - name;
3246: break;
3247: }
1.28 schwarze 3248: if ('\\' != *cp)
3249: continue;
1.88 schwarze 3250: namesz = cp - name;
3251: if ('{' == cp[1] || '}' == cp[1])
3252: break;
1.28 schwarze 3253: cp++;
3254: if ('\\' == *cp)
3255: continue;
1.97 schwarze 3256: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3257: "%.*s", (int)(cp - name + 1), name);
1.85 schwarze 3258: mandoc_escape((const char **)&cp, NULL, NULL);
3259: break;
1.28 schwarze 3260: }
3261:
3262: /* Read past spaces. */
3263: while (' ' == *cp)
3264: cp++;
3265:
3266: *cpp = cp;
1.149 schwarze 3267: return namesz;
1.28 schwarze 3268: }
3269:
1.16 schwarze 3270: /*
3271: * Store *string into the user-defined string called *name.
3272: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.66 schwarze 3273: * append == 0: replace mode
3274: * append == 1: single-line append mode
3275: * append == 2: multiline append mode, append '\n' after each call
1.16 schwarze 3276: */
1.8 schwarze 3277: static void
1.16 schwarze 3278: roff_setstr(struct roff *r, const char *name, const char *string,
1.66 schwarze 3279: int append)
1.7 schwarze 3280: {
1.42 schwarze 3281:
3282: roff_setstrn(&r->strtab, name, strlen(name), string,
1.80 schwarze 3283: string ? strlen(string) : 0, append);
1.42 schwarze 3284: }
3285:
3286: static void
3287: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.66 schwarze 3288: const char *string, size_t stringsz, int append)
1.42 schwarze 3289: {
3290: struct roffkv *n;
3291: char *c;
3292: int i;
3293: size_t oldch, newch;
1.7 schwarze 3294:
1.16 schwarze 3295: /* Search for an existing string with the same name. */
1.42 schwarze 3296: n = *r;
3297:
1.84 schwarze 3298: while (n && (namesz != n->key.sz ||
3299: strncmp(n->key.p, name, namesz)))
1.7 schwarze 3300: n = n->next;
1.8 schwarze 3301:
3302: if (NULL == n) {
1.16 schwarze 3303: /* Create a new string table entry. */
1.42 schwarze 3304: n = mandoc_malloc(sizeof(struct roffkv));
3305: n->key.p = mandoc_strndup(name, namesz);
3306: n->key.sz = namesz;
3307: n->val.p = NULL;
3308: n->val.sz = 0;
3309: n->next = *r;
3310: *r = n;
1.66 schwarze 3311: } else if (0 == append) {
1.42 schwarze 3312: free(n->val.p);
3313: n->val.p = NULL;
3314: n->val.sz = 0;
1.16 schwarze 3315: }
3316:
3317: if (NULL == string)
3318: return;
3319:
3320: /*
3321: * One additional byte for the '\n' in multiline mode,
3322: * and one for the terminating '\0'.
3323: */
1.66 schwarze 3324: newch = stringsz + (1 < append ? 2u : 1u);
1.42 schwarze 3325:
3326: if (NULL == n->val.p) {
3327: n->val.p = mandoc_malloc(newch);
3328: *n->val.p = '\0';
1.16 schwarze 3329: oldch = 0;
3330: } else {
1.42 schwarze 3331: oldch = n->val.sz;
3332: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.16 schwarze 3333: }
3334:
3335: /* Skip existing content in the destination buffer. */
1.42 schwarze 3336: c = n->val.p + (int)oldch;
1.16 schwarze 3337:
3338: /* Append new content to the destination buffer. */
1.42 schwarze 3339: i = 0;
3340: while (i < (int)stringsz) {
1.16 schwarze 3341: /*
3342: * Rudimentary roff copy mode:
3343: * Handle escaped backslashes.
3344: */
1.42 schwarze 3345: if ('\\' == string[i] && '\\' == string[i + 1])
3346: i++;
3347: *c++ = string[i++];
1.16 schwarze 3348: }
1.8 schwarze 3349:
1.16 schwarze 3350: /* Append terminating bytes. */
1.66 schwarze 3351: if (1 < append)
1.16 schwarze 3352: *c++ = '\n';
1.42 schwarze 3353:
1.16 schwarze 3354: *c = '\0';
1.42 schwarze 3355: n->val.sz = (int)(c - n->val.p);
1.7 schwarze 3356: }
3357:
1.8 schwarze 3358: static const char *
3359: roff_getstrn(const struct roff *r, const char *name, size_t len)
1.7 schwarze 3360: {
1.42 schwarze 3361: const struct roffkv *n;
1.64 schwarze 3362: int i;
1.7 schwarze 3363:
1.42 schwarze 3364: for (n = r->strtab; n; n = n->next)
1.80 schwarze 3365: if (0 == strncmp(name, n->key.p, len) &&
3366: '\0' == n->key.p[(int)len])
1.149 schwarze 3367: return n->val.p;
1.64 schwarze 3368:
3369: for (i = 0; i < PREDEFS_MAX; i++)
3370: if (0 == strncmp(name, predefs[i].name, len) &&
3371: '\0' == predefs[i].name[(int)len])
1.149 schwarze 3372: return predefs[i].str;
1.8 schwarze 3373:
1.149 schwarze 3374: return NULL;
1.7 schwarze 3375: }
3376:
1.8 schwarze 3377: static void
1.42 schwarze 3378: roff_freestr(struct roffkv *r)
1.7 schwarze 3379: {
1.42 schwarze 3380: struct roffkv *n, *nn;
1.7 schwarze 3381:
1.42 schwarze 3382: for (n = r; n; n = nn) {
3383: free(n->key.p);
3384: free(n->val.p);
1.7 schwarze 3385: nn = n->next;
3386: free(n);
3387: }
1.27 schwarze 3388: }
1.138 schwarze 3389:
3390: /* --- accessors and utility functions ------------------------------------ */
1.27 schwarze 3391:
3392: const struct tbl_span *
3393: roff_span(const struct roff *r)
3394: {
1.80 schwarze 3395:
1.149 schwarze 3396: return r->tbl ? tbl_span(r->tbl) : NULL;
1.32 schwarze 3397: }
3398:
3399: const struct eqn *
3400: roff_eqn(const struct roff *r)
3401: {
1.80 schwarze 3402:
1.149 schwarze 3403: return r->last_eqn ? &r->last_eqn->eqn : NULL;
1.42 schwarze 3404: }
3405:
3406: /*
3407: * Duplicate an input string, making the appropriate character
3408: * conversations (as stipulated by `tr') along the way.
3409: * Returns a heap-allocated string with all the replacements made.
3410: */
3411: char *
3412: roff_strdup(const struct roff *r, const char *p)
3413: {
3414: const struct roffkv *cp;
3415: char *res;
3416: const char *pp;
3417: size_t ssz, sz;
3418: enum mandoc_esc esc;
3419:
3420: if (NULL == r->xmbtab && NULL == r->xtab)
1.149 schwarze 3421: return mandoc_strdup(p);
1.42 schwarze 3422: else if ('\0' == *p)
1.149 schwarze 3423: return mandoc_strdup("");
1.42 schwarze 3424:
3425: /*
3426: * Step through each character looking for term matches
3427: * (remember that a `tr' can be invoked with an escape, which is
3428: * a glyph but the escape is multi-character).
3429: * We only do this if the character hash has been initialised
3430: * and the string is >0 length.
3431: */
3432:
3433: res = NULL;
3434: ssz = 0;
3435:
3436: while ('\0' != *p) {
1.161 schwarze 3437: assert((unsigned int)*p < 128);
3438: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.42 schwarze 3439: sz = r->xtab[(int)*p].sz;
3440: res = mandoc_realloc(res, ssz + sz + 1);
3441: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3442: ssz += sz;
3443: p++;
3444: continue;
3445: } else if ('\\' != *p) {
3446: res = mandoc_realloc(res, ssz + 2);
3447: res[ssz++] = *p++;
3448: continue;
3449: }
3450:
3451: /* Search for term matches. */
3452: for (cp = r->xmbtab; cp; cp = cp->next)
3453: if (0 == strncmp(p, cp->key.p, cp->key.sz))
3454: break;
3455:
3456: if (NULL != cp) {
3457: /*
3458: * A match has been found.
3459: * Append the match to the array and move
3460: * forward by its keysize.
3461: */
1.80 schwarze 3462: res = mandoc_realloc(res,
3463: ssz + cp->val.sz + 1);
1.42 schwarze 3464: memcpy(res + ssz, cp->val.p, cp->val.sz);
3465: ssz += cp->val.sz;
3466: p += (int)cp->key.sz;
3467: continue;
3468: }
3469:
3470: /*
3471: * Handle escapes carefully: we need to copy
3472: * over just the escape itself, or else we might
3473: * do replacements within the escape itself.
3474: * Make sure to pass along the bogus string.
3475: */
3476: pp = p++;
3477: esc = mandoc_escape(&p, NULL, NULL);
3478: if (ESCAPE_ERROR == esc) {
3479: sz = strlen(pp);
3480: res = mandoc_realloc(res, ssz + sz + 1);
3481: memcpy(res + ssz, pp, sz);
3482: break;
3483: }
1.80 schwarze 3484: /*
3485: * We bail out on bad escapes.
1.42 schwarze 3486: * No need to warn: we already did so when
3487: * roff_res() was called.
3488: */
3489: sz = (int)(p - pp);
3490: res = mandoc_realloc(res, ssz + sz + 1);
3491: memcpy(res + ssz, pp, sz);
3492: ssz += sz;
3493: }
3494:
3495: res[(int)ssz] = '\0';
1.149 schwarze 3496: return res;
1.99 schwarze 3497: }
3498:
3499: int
3500: roff_getformat(const struct roff *r)
3501: {
3502:
1.149 schwarze 3503: return r->format;
1.48 schwarze 3504: }
3505:
3506: /*
1.80 schwarze 3507: * Find out whether a line is a macro line or not.
1.48 schwarze 3508: * If it is, adjust the current position and return one; if it isn't,
3509: * return zero and don't change the current position.
3510: * If the control character has been set with `.cc', then let that grain
3511: * precedence.
3512: * This is slighly contrary to groff, where using the non-breaking
3513: * control character when `cc' has been invoked will cause the
3514: * non-breaking macro contents to be printed verbatim.
3515: */
3516: int
3517: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
3518: {
3519: int pos;
3520:
3521: pos = *ppos;
3522:
1.175 schwarze 3523: if (r->control != '\0' && cp[pos] == r->control)
1.48 schwarze 3524: pos++;
1.175 schwarze 3525: else if (r->control != '\0')
1.149 schwarze 3526: return 0;
1.48 schwarze 3527: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
3528: pos += 2;
3529: else if ('.' == cp[pos] || '\'' == cp[pos])
3530: pos++;
3531: else
1.149 schwarze 3532: return 0;
1.48 schwarze 3533:
3534: while (' ' == cp[pos] || '\t' == cp[pos])
3535: pos++;
3536:
3537: *ppos = pos;
1.149 schwarze 3538: return 1;
1.1 schwarze 3539: }
![[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