Annotation of src/usr.bin/mandoc/roff.c, Revision 1.222
1.222 ! schwarze 1: /* $OpenBSD: roff.c,v 1.221 2018/12/13 11:55:14 schwarze Exp $ */
1.1 schwarze 2: /*
1.139 schwarze 3: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.197 schwarze 4: * Copyright (c) 2010-2015, 2017, 2018 Ingo Schwarze <schwarze@openbsd.org>
1.1 schwarze 5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
1.16 schwarze 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.1 schwarze 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.16 schwarze 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.1 schwarze 13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
1.99 schwarze 18: #include <sys/types.h>
19:
1.1 schwarze 20: #include <assert.h>
1.3 schwarze 21: #include <ctype.h>
1.117 schwarze 22: #include <limits.h>
1.167 schwarze 23: #include <stddef.h>
24: #include <stdint.h>
1.51 schwarze 25: #include <stdio.h>
1.1 schwarze 26: #include <stdlib.h>
27: #include <string.h>
28:
1.74 schwarze 29: #include "mandoc_aux.h"
1.167 schwarze 30: #include "mandoc_ohash.h"
1.217 schwarze 31: #include "mandoc.h"
1.137 schwarze 32: #include "roff.h"
1.221 schwarze 33: #include "mandoc_parse.h"
1.98 daniel 34: #include "libmandoc.h"
1.138 schwarze 35: #include "roff_int.h"
1.218 schwarze 36: #include "tbl_parse.h"
1.219 schwarze 37: #include "eqn_parse.h"
1.2 schwarze 38:
1.43 schwarze 39: /* Maximum number of string expansions per line, to break infinite loops. */
40: #define EXPAND_LIMIT 1000
41:
1.187 schwarze 42: /* Types of definitions of macros and strings. */
43: #define ROFFDEF_USER (1 << 1) /* User-defined. */
44: #define ROFFDEF_PRE (1 << 2) /* Predefined. */
45: #define ROFFDEF_REN (1 << 3) /* Renamed standard macro. */
46: #define ROFFDEF_STD (1 << 4) /* mdoc(7) or man(7) macro. */
47: #define ROFFDEF_ANY (ROFFDEF_USER | ROFFDEF_PRE | \
48: ROFFDEF_REN | ROFFDEF_STD)
1.197 schwarze 49: #define ROFFDEF_UNDEF (1 << 5) /* Completely undefined. */
1.187 schwarze 50:
1.138 schwarze 51: /* --- data types --------------------------------------------------------- */
52:
1.41 schwarze 53: /*
1.42 schwarze 54: * An incredibly-simple string buffer.
55: */
1.8 schwarze 56: struct roffstr {
1.42 schwarze 57: char *p; /* nil-terminated buffer */
58: size_t sz; /* saved strlen(p) */
59: };
60:
61: /*
62: * A key-value roffstr pair as part of a singly-linked list.
63: */
64: struct roffkv {
65: struct roffstr key;
66: struct roffstr val;
67: struct roffkv *next; /* next in list */
1.8 schwarze 68: };
69:
1.52 schwarze 70: /*
71: * A single number register as part of a singly-linked list.
72: */
73: struct roffreg {
74: struct roffstr key;
1.53 schwarze 75: int val;
1.199 schwarze 76: int step;
1.52 schwarze 77: struct roffreg *next;
78: };
79:
1.167 schwarze 80: /*
81: * Association of request and macro names with token IDs.
82: */
83: struct roffreq {
84: enum roff_tok tok;
85: char name[];
86: };
87:
1.211 schwarze 88: /*
89: * A macro processing context.
90: * More than one is needed when macro calls are nested.
91: */
92: struct mctx {
93: char **argv;
94: int argc;
95: int argsz;
96: };
97:
1.1 schwarze 98: struct roff {
1.35 schwarze 99: struct mparse *parse; /* parse point */
1.168 schwarze 100: struct roff_man *man; /* mdoc or man parser */
1.1 schwarze 101: struct roffnode *last; /* leaf of stack */
1.211 schwarze 102: struct mctx *mstack; /* stack of macro contexts */
1.96 schwarze 103: int *rstack; /* stack of inverted `ie' values */
1.167 schwarze 104: struct ohash *reqtab; /* request lookup table */
1.52 schwarze 105: struct roffreg *regtab; /* number registers */
1.42 schwarze 106: struct roffkv *strtab; /* user-defined strings & macros */
1.178 schwarze 107: struct roffkv *rentab; /* renamed strings & macros */
1.42 schwarze 108: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
109: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.16 schwarze 110: const char *current_string; /* value of last called user macro */
1.27 schwarze 111: struct tbl_node *first_tbl; /* first table parsed */
112: struct tbl_node *last_tbl; /* last table parsed */
113: struct tbl_node *tbl; /* current table being parsed */
1.191 schwarze 114: struct eqn_node *last_eqn; /* equation parser */
115: struct eqn_node *eqn; /* active equation parser */
1.102 schwarze 116: int eqn_inline; /* current equation is inline */
1.96 schwarze 117: int options; /* parse options */
1.211 schwarze 118: int mstacksz; /* current size of mstack */
119: int mstackpos; /* position in mstack */
1.96 schwarze 120: int rstacksz; /* current size limit of rstack */
121: int rstackpos; /* position in rstack */
1.99 schwarze 122: int format; /* current file in mdoc or man format */
1.96 schwarze 123: char control; /* control character */
1.175 schwarze 124: char escape; /* escape character */
1.1 schwarze 125: };
126:
127: struct roffnode {
1.166 schwarze 128: enum roff_tok tok; /* type of node */
1.1 schwarze 129: struct roffnode *parent; /* up one in stack */
130: int line; /* parse line */
131: int col; /* parse col */
1.16 schwarze 132: char *name; /* node name, e.g. macro name */
1.2 schwarze 133: char *end; /* end-rules: custom token */
134: int endspan; /* end-rules: next-line or infty */
1.71 schwarze 135: int rule; /* current evaluation rule */
1.1 schwarze 136: };
137:
138: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.166 schwarze 139: enum roff_tok tok, /* tok of macro */ \
1.110 schwarze 140: struct buf *buf, /* input buffer */ \
1.1 schwarze 141: int ln, /* parse line */ \
1.2 schwarze 142: int ppos, /* original pos in buffer */ \
143: int pos, /* current pos in buffer */ \
144: int *offs /* reset offset of buffer data */
1.1 schwarze 145:
1.212 schwarze 146: typedef int (*roffproc)(ROFF_ARGS);
1.1 schwarze 147:
148: struct roffmac {
1.2 schwarze 149: roffproc proc; /* process new macro */
150: roffproc text; /* process as child text of macro */
151: roffproc sub; /* process as child of macro */
152: int flags;
153: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.1 schwarze 154: };
155:
1.37 schwarze 156: struct predef {
157: const char *name; /* predefined input name */
158: const char *str; /* replacement symbol */
159: };
160:
161: #define PREDEF(__name, __str) \
162: { (__name), (__str) },
163:
1.138 schwarze 164: /* --- function prototypes ------------------------------------------------ */
165:
1.212 schwarze 166: static int roffnode_cleanscope(struct roff *);
167: static int roffnode_pop(struct roff *);
1.166 schwarze 168: static void roffnode_push(struct roff *, enum roff_tok,
1.42 schwarze 169: const char *, int, int);
1.218 schwarze 170: static void roff_addtbl(struct roff_man *, int, struct tbl_node *);
1.212 schwarze 171: static int roff_als(ROFF_ARGS);
172: static int roff_block(ROFF_ARGS);
173: static int roff_block_text(ROFF_ARGS);
174: static int roff_block_sub(ROFF_ARGS);
175: static int roff_br(ROFF_ARGS);
176: static int roff_cblock(ROFF_ARGS);
177: static int roff_cc(ROFF_ARGS);
178: static int roff_ccond(struct roff *, int, int);
1.213 schwarze 179: static int roff_char(ROFF_ARGS);
1.212 schwarze 180: static int roff_cond(ROFF_ARGS);
181: static int roff_cond_text(ROFF_ARGS);
182: static int roff_cond_sub(ROFF_ARGS);
183: static int roff_ds(ROFF_ARGS);
184: static int roff_ec(ROFF_ARGS);
185: static int roff_eo(ROFF_ARGS);
186: static int roff_eqndelim(struct roff *, struct buf *, int);
1.143 schwarze 187: static int roff_evalcond(struct roff *r, int, char *, int *);
1.106 schwarze 188: static int roff_evalnum(struct roff *, int,
189: const char *, int *, int *, int);
190: static int roff_evalpar(struct roff *, int,
1.133 schwarze 191: const char *, int *, int *, int);
1.71 schwarze 192: static int roff_evalstrcond(const char *, int *);
1.42 schwarze 193: static void roff_free1(struct roff *);
1.52 schwarze 194: static void roff_freereg(struct roffreg *);
1.42 schwarze 195: static void roff_freestr(struct roffkv *);
1.85 schwarze 196: static size_t roff_getname(struct roff *, char **, int, int);
1.133 schwarze 197: static int roff_getnum(const char *, int *, int *, int);
1.56 schwarze 198: static int roff_getop(const char *, int *, char *);
1.199 schwarze 199: static int roff_getregn(struct roff *,
200: const char *, size_t, char);
1.145 schwarze 201: static int roff_getregro(const struct roff *,
202: const char *name);
1.197 schwarze 203: static const char *roff_getstrn(struct roff *,
1.187 schwarze 204: const char *, size_t, int *);
1.143 schwarze 205: static int roff_hasregn(const struct roff *,
206: const char *, size_t);
1.212 schwarze 207: static int roff_insec(ROFF_ARGS);
208: static int roff_it(ROFF_ARGS);
209: static int roff_line_ignore(ROFF_ARGS);
1.137 schwarze 210: static void roff_man_alloc1(struct roff_man *);
211: static void roff_man_free1(struct roff_man *);
1.212 schwarze 212: static int roff_manyarg(ROFF_ARGS);
213: static int roff_nop(ROFF_ARGS);
214: static int roff_nr(ROFF_ARGS);
215: static int roff_onearg(ROFF_ARGS);
1.166 schwarze 216: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.87 schwarze 217: int, int);
1.212 schwarze 218: static int roff_parsetext(struct roff *, struct buf *,
1.177 schwarze 219: int, int *);
1.212 schwarze 220: static int roff_renamed(ROFF_ARGS);
221: static int roff_res(struct roff *, struct buf *, int, int);
222: static int roff_return(ROFF_ARGS);
223: static int roff_rm(ROFF_ARGS);
224: static int roff_rn(ROFF_ARGS);
225: static int roff_rr(ROFF_ARGS);
1.198 schwarze 226: static void roff_setregn(struct roff *, const char *,
1.199 schwarze 227: size_t, int, char, int);
1.8 schwarze 228: static void roff_setstr(struct roff *,
1.16 schwarze 229: const char *, const char *, int);
1.80 schwarze 230: static void roff_setstrn(struct roffkv **, const char *,
1.42 schwarze 231: size_t, const char *, size_t, int);
1.212 schwarze 232: static int roff_shift(ROFF_ARGS);
233: static int roff_so(ROFF_ARGS);
234: static int roff_tr(ROFF_ARGS);
235: static int roff_Dd(ROFF_ARGS);
236: static int roff_TE(ROFF_ARGS);
237: static int roff_TS(ROFF_ARGS);
238: static int roff_EQ(ROFF_ARGS);
239: static int roff_EN(ROFF_ARGS);
240: static int roff_T_(ROFF_ARGS);
241: static int roff_unsupp(ROFF_ARGS);
242: static int roff_userdef(ROFF_ARGS);
1.1 schwarze 243:
1.138 schwarze 244: /* --- constant data ------------------------------------------------------ */
245:
1.133 schwarze 246: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
247: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
248:
1.166 schwarze 249: const char *__roff_name[MAN_MAX + 1] = {
1.177 schwarze 250: "br", "ce", "ft", "ll",
1.184 schwarze 251: "mc", "po", "rj", "sp",
252: "ta", "ti", NULL,
1.166 schwarze 253: "ab", "ad", "af", "aln",
254: "als", "am", "am1", "ami",
255: "ami1", "as", "as1", "asciify",
256: "backtrace", "bd", "bleedat", "blm",
257: "box", "boxa", "bp", "BP",
258: "break", "breakchar", "brnl", "brp",
1.177 schwarze 259: "brpnl", "c2", "cc",
1.166 schwarze 260: "cf", "cflags", "ch", "char",
261: "chop", "class", "close", "CL",
262: "color", "composite", "continue", "cp",
263: "cropat", "cs", "cu", "da",
264: "dch", "Dd", "de", "de1",
265: "defcolor", "dei", "dei1", "device",
266: "devicem", "di", "do", "ds",
267: "ds1", "dwh", "dt", "ec",
268: "ecr", "ecs", "el", "em",
269: "EN", "eo", "EP", "EQ",
270: "errprint", "ev", "evc", "ex",
271: "fallback", "fam", "fc", "fchar",
272: "fcolor", "fdeferlig", "feature", "fkern",
273: "fl", "flig", "fp", "fps",
274: "fschar", "fspacewidth", "fspecial", "ftr",
275: "fzoom", "gcolor", "hc", "hcode",
276: "hidechar", "hla", "hlm", "hpf",
277: "hpfa", "hpfcode", "hw", "hy",
278: "hylang", "hylen", "hym", "hypp",
279: "hys", "ie", "if", "ig",
280: "index", "it", "itc", "IX",
281: "kern", "kernafter", "kernbefore", "kernpair",
282: "lc", "lc_ctype", "lds", "length",
283: "letadj", "lf", "lg", "lhang",
284: "linetabs", "lnr", "lnrf", "lpfx",
1.176 schwarze 285: "ls", "lsm", "lt",
1.166 schwarze 286: "mediasize", "minss", "mk", "mso",
287: "na", "ne", "nh", "nhychar",
288: "nm", "nn", "nop", "nr",
289: "nrf", "nroff", "ns", "nx",
290: "open", "opena", "os", "output",
291: "padj", "papersize", "pc", "pev",
292: "pi", "PI", "pl", "pm",
1.184 schwarze 293: "pn", "pnr", "ps",
1.166 schwarze 294: "psbb", "pshape", "pso", "ptr",
295: "pvs", "rchar", "rd", "recursionlimit",
1.181 schwarze 296: "return", "rfschar", "rhang",
1.166 schwarze 297: "rm", "rn", "rnn", "rr",
298: "rs", "rt", "schar", "sentchar",
299: "shc", "shift", "sizes", "so",
300: "spacewidth", "special", "spreadwarn", "ss",
301: "sty", "substring", "sv", "sy",
1.172 schwarze 302: "T&", "tc", "TE",
1.173 schwarze 303: "TH", "tkf", "tl",
1.166 schwarze 304: "tm", "tm1", "tmc", "tr",
305: "track", "transchar", "trf", "trimat",
306: "trin", "trnt", "troff", "TS",
307: "uf", "ul", "unformat", "unwatch",
308: "unwatchn", "vpt", "vs", "warn",
309: "warnscale", "watch", "watchlength", "watchn",
310: "wh", "while", "write", "writec",
311: "writem", "xflag", ".", NULL,
1.178 schwarze 312: NULL, "text",
1.166 schwarze 313: "Dd", "Dt", "Os", "Sh",
314: "Ss", "Pp", "D1", "Dl",
315: "Bd", "Ed", "Bl", "El",
316: "It", "Ad", "An", "Ap",
317: "Ar", "Cd", "Cm", "Dv",
318: "Er", "Ev", "Ex", "Fa",
319: "Fd", "Fl", "Fn", "Ft",
320: "Ic", "In", "Li", "Nd",
321: "Nm", "Op", "Ot", "Pa",
322: "Rv", "St", "Va", "Vt",
323: "Xr", "%A", "%B", "%D",
324: "%I", "%J", "%N", "%O",
325: "%P", "%R", "%T", "%V",
326: "Ac", "Ao", "Aq", "At",
327: "Bc", "Bf", "Bo", "Bq",
328: "Bsx", "Bx", "Db", "Dc",
329: "Do", "Dq", "Ec", "Ef",
330: "Em", "Eo", "Fx", "Ms",
331: "No", "Ns", "Nx", "Ox",
332: "Pc", "Pf", "Po", "Pq",
333: "Qc", "Ql", "Qo", "Qq",
334: "Re", "Rs", "Sc", "So",
335: "Sq", "Sm", "Sx", "Sy",
336: "Tn", "Ux", "Xc", "Xo",
337: "Fo", "Fc", "Oo", "Oc",
338: "Bk", "Ek", "Bt", "Hf",
339: "Fr", "Ud", "Lb", "Lp",
340: "Lk", "Mt", "Brq", "Bro",
341: "Brc", "%C", "Es", "En",
1.171 schwarze 342: "Dx", "%Q", "%U", "Ta",
343: NULL,
1.166 schwarze 344: "TH", "SH", "SS", "TP",
1.204 schwarze 345: "TQ",
1.166 schwarze 346: "LP", "PP", "P", "IP",
347: "HP", "SM", "SB", "BI",
348: "IB", "BR", "RB", "R",
349: "B", "I", "IR", "RI",
1.171 schwarze 350: "nf", "fi",
1.166 schwarze 351: "RE", "RS", "DT", "UC",
1.169 schwarze 352: "PD", "AT", "in",
1.205 schwarze 353: "SY", "YS", "OP",
354: "EX", "EE", "UR",
1.189 bentley 355: "UE", "MT", "ME", NULL
1.166 schwarze 356: };
357: const char *const *roff_name = __roff_name;
358:
359: static struct roffmac roffs[TOKEN_NONE] = {
1.168 schwarze 360: { roff_br, NULL, NULL, 0 }, /* br */
1.177 schwarze 361: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.169 schwarze 362: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.170 schwarze 363: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.176 schwarze 364: { roff_onearg, NULL, NULL, 0 }, /* mc */
1.184 schwarze 365: { roff_onearg, NULL, NULL, 0 }, /* po */
1.181 schwarze 366: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.171 schwarze 367: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.172 schwarze 368: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.173 schwarze 369: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.168 schwarze 370: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.167 schwarze 371: { roff_unsupp, NULL, NULL, 0 }, /* ab */
372: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
373: { roff_line_ignore, NULL, NULL, 0 }, /* af */
374: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.183 schwarze 375: { roff_als, NULL, NULL, 0 }, /* als */
1.167 schwarze 376: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
377: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
378: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
379: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
380: { roff_ds, NULL, NULL, 0 }, /* as */
381: { roff_ds, NULL, NULL, 0 }, /* as1 */
382: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
383: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
384: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
385: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
386: { roff_unsupp, NULL, NULL, 0 }, /* blm */
387: { roff_unsupp, NULL, NULL, 0 }, /* box */
388: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
389: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
390: { roff_unsupp, NULL, NULL, 0 }, /* BP */
391: { roff_unsupp, NULL, NULL, 0 }, /* break */
392: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
393: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.168 schwarze 394: { roff_br, NULL, NULL, 0 }, /* brp */
1.167 schwarze 395: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
396: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
397: { roff_cc, NULL, NULL, 0 }, /* cc */
398: { roff_insec, NULL, NULL, 0 }, /* cf */
399: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
400: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
1.213 schwarze 401: { roff_char, NULL, NULL, 0 }, /* char */
1.167 schwarze 402: { roff_unsupp, NULL, NULL, 0 }, /* chop */
403: { roff_line_ignore, NULL, NULL, 0 }, /* class */
404: { roff_insec, NULL, NULL, 0 }, /* close */
405: { roff_unsupp, NULL, NULL, 0 }, /* CL */
406: { roff_line_ignore, NULL, NULL, 0 }, /* color */
407: { roff_unsupp, NULL, NULL, 0 }, /* composite */
408: { roff_unsupp, NULL, NULL, 0 }, /* continue */
409: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
410: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
411: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
412: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
413: { roff_unsupp, NULL, NULL, 0 }, /* da */
414: { roff_unsupp, NULL, NULL, 0 }, /* dch */
415: { roff_Dd, NULL, NULL, 0 }, /* Dd */
416: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
417: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
418: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
419: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
420: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
421: { roff_unsupp, NULL, NULL, 0 }, /* device */
422: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
423: { roff_unsupp, NULL, NULL, 0 }, /* di */
424: { roff_unsupp, NULL, NULL, 0 }, /* do */
425: { roff_ds, NULL, NULL, 0 }, /* ds */
426: { roff_ds, NULL, NULL, 0 }, /* ds1 */
427: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
428: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.175 schwarze 429: { roff_ec, NULL, NULL, 0 }, /* ec */
1.167 schwarze 430: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
431: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
432: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
433: { roff_unsupp, NULL, NULL, 0 }, /* em */
434: { roff_EN, NULL, NULL, 0 }, /* EN */
1.175 schwarze 435: { roff_eo, NULL, NULL, 0 }, /* eo */
1.167 schwarze 436: { roff_unsupp, NULL, NULL, 0 }, /* EP */
437: { roff_EQ, NULL, NULL, 0 }, /* EQ */
438: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
439: { roff_unsupp, NULL, NULL, 0 }, /* ev */
440: { roff_unsupp, NULL, NULL, 0 }, /* evc */
441: { roff_unsupp, NULL, NULL, 0 }, /* ex */
442: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
443: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
444: { roff_unsupp, NULL, NULL, 0 }, /* fc */
445: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
446: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
447: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
448: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
449: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
450: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
451: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
452: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
453: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
454: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
455: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
456: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
457: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
458: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
459: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
460: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
461: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
462: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
463: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
464: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
465: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
466: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
467: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
468: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
469: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
470: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
471: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
472: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
473: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
474: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
475: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
476: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
477: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
478: { roff_unsupp, NULL, NULL, 0 }, /* index */
479: { roff_it, NULL, NULL, 0 }, /* it */
480: { roff_unsupp, NULL, NULL, 0 }, /* itc */
481: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
482: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
483: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
484: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
485: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
486: { roff_unsupp, NULL, NULL, 0 }, /* lc */
487: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
488: { roff_unsupp, NULL, NULL, 0 }, /* lds */
489: { roff_unsupp, NULL, NULL, 0 }, /* length */
490: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
491: { roff_insec, NULL, NULL, 0 }, /* lf */
492: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
493: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
494: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
495: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
496: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
497: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
498: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
499: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
500: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
501: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
502: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
503: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
504: { roff_insec, NULL, NULL, 0 }, /* mso */
505: { roff_line_ignore, NULL, NULL, 0 }, /* na */
506: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
507: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
508: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
509: { roff_unsupp, NULL, NULL, 0 }, /* nm */
510: { roff_unsupp, NULL, NULL, 0 }, /* nn */
1.202 schwarze 511: { roff_nop, NULL, NULL, 0 }, /* nop */
1.167 schwarze 512: { roff_nr, NULL, NULL, 0 }, /* nr */
513: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
514: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
515: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
516: { roff_insec, NULL, NULL, 0 }, /* nx */
517: { roff_insec, NULL, NULL, 0 }, /* open */
518: { roff_insec, NULL, NULL, 0 }, /* opena */
519: { roff_line_ignore, NULL, NULL, 0 }, /* os */
520: { roff_unsupp, NULL, NULL, 0 }, /* output */
521: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
522: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
523: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
524: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
525: { roff_insec, NULL, NULL, 0 }, /* pi */
526: { roff_unsupp, NULL, NULL, 0 }, /* PI */
527: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
528: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
529: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
530: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
531: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
532: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
533: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
534: { roff_insec, NULL, NULL, 0 }, /* pso */
535: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
536: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
537: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
538: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
539: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
1.211 schwarze 540: { roff_return, NULL, NULL, 0 }, /* return */
1.167 schwarze 541: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
542: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
543: { roff_rm, NULL, NULL, 0 }, /* rm */
1.178 schwarze 544: { roff_rn, NULL, NULL, 0 }, /* rn */
1.167 schwarze 545: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
546: { roff_rr, NULL, NULL, 0 }, /* rr */
547: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
548: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
549: { roff_unsupp, NULL, NULL, 0 }, /* schar */
550: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
551: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
1.211 schwarze 552: { roff_shift, NULL, NULL, 0 }, /* shift */
1.167 schwarze 553: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
554: { roff_so, NULL, NULL, 0 }, /* so */
555: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
556: { roff_line_ignore, NULL, NULL, 0 }, /* special */
557: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
558: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
559: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
560: { roff_unsupp, NULL, NULL, 0 }, /* substring */
561: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
562: { roff_insec, NULL, NULL, 0 }, /* sy */
563: { roff_T_, NULL, NULL, 0 }, /* T& */
564: { roff_unsupp, NULL, NULL, 0 }, /* tc */
565: { roff_TE, NULL, NULL, 0 }, /* TE */
1.187 schwarze 566: { roff_Dd, NULL, NULL, 0 }, /* TH */
1.167 schwarze 567: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
568: { roff_unsupp, NULL, NULL, 0 }, /* tl */
569: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
570: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
571: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
572: { roff_tr, NULL, NULL, 0 }, /* tr */
573: { roff_line_ignore, NULL, NULL, 0 }, /* track */
574: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
575: { roff_insec, NULL, NULL, 0 }, /* trf */
576: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
577: { roff_unsupp, NULL, NULL, 0 }, /* trin */
578: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
579: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
580: { roff_TS, NULL, NULL, 0 }, /* TS */
581: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
582: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
583: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
584: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
585: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
586: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
587: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
588: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
589: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
590: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
591: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
592: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
593: { roff_unsupp, NULL, NULL, 0 }, /* wh */
1.212 schwarze 594: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /*while*/
1.167 schwarze 595: { roff_insec, NULL, NULL, 0 }, /* write */
596: { roff_insec, NULL, NULL, 0 }, /* writec */
597: { roff_insec, NULL, NULL, 0 }, /* writem */
598: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
599: { roff_cblock, NULL, NULL, 0 }, /* . */
1.178 schwarze 600: { roff_renamed, NULL, NULL, 0 },
1.167 schwarze 601: { roff_userdef, NULL, NULL, 0 }
1.1 schwarze 602: };
603:
1.37 schwarze 604: /* Array of injected predefined strings. */
605: #define PREDEFS_MAX 38
606: static const struct predef predefs[PREDEFS_MAX] = {
607: #include "predefs.in"
608: };
609:
1.177 schwarze 610: static int roffce_lines; /* number of input lines to center */
611: static struct roff_node *roffce_node; /* active request */
1.51 schwarze 612: static int roffit_lines; /* number of lines to delay */
613: static char *roffit_macro; /* nil-terminated macro line */
614:
1.80 schwarze 615:
1.138 schwarze 616: /* --- request table ------------------------------------------------------ */
617:
1.167 schwarze 618: struct ohash *
619: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.3 schwarze 620: {
1.167 schwarze 621: struct ohash *htab;
622: struct roffreq *req;
623: enum roff_tok tok;
624: size_t sz;
625: unsigned int slot;
1.3 schwarze 626:
1.167 schwarze 627: htab = mandoc_malloc(sizeof(*htab));
628: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.3 schwarze 629:
1.167 schwarze 630: for (tok = mintok; tok < maxtok; tok++) {
1.168 schwarze 631: if (roff_name[tok] == NULL)
632: continue;
1.167 schwarze 633: sz = strlen(roff_name[tok]);
634: req = mandoc_malloc(sizeof(*req) + sz + 1);
635: req->tok = tok;
636: memcpy(req->name, roff_name[tok], sz + 1);
637: slot = ohash_qlookup(htab, req->name);
638: ohash_insert(htab, slot, req);
1.3 schwarze 639: }
1.167 schwarze 640: return htab;
1.3 schwarze 641: }
642:
1.167 schwarze 643: void
644: roffhash_free(struct ohash *htab)
1.1 schwarze 645: {
1.167 schwarze 646: struct roffreq *req;
647: unsigned int slot;
1.1 schwarze 648:
1.167 schwarze 649: if (htab == NULL)
650: return;
651: for (req = ohash_first(htab, &slot); req != NULL;
652: req = ohash_next(htab, &slot))
653: free(req);
654: ohash_delete(htab);
655: free(htab);
656: }
657:
658: enum roff_tok
659: roffhash_find(struct ohash *htab, const char *name, size_t sz)
660: {
661: struct roffreq *req;
662: const char *end;
663:
664: if (sz) {
665: end = name + sz;
666: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
667: } else
668: req = ohash_find(htab, ohash_qlookup(htab, name));
669: return req == NULL ? TOKEN_NONE : req->tok;
1.1 schwarze 670: }
671:
1.138 schwarze 672: /* --- stack of request blocks -------------------------------------------- */
673:
1.1 schwarze 674: /*
675: * Pop the current node off of the stack of roff instructions currently
676: * pending.
677: */
1.212 schwarze 678: static int
1.1 schwarze 679: roffnode_pop(struct roff *r)
680: {
681: struct roffnode *p;
1.212 schwarze 682: int inloop;
1.1 schwarze 683:
1.80 schwarze 684: p = r->last;
1.212 schwarze 685: inloop = p->tok == ROFF_while;
686: r->last = p->parent;
1.16 schwarze 687: free(p->name);
688: free(p->end);
1.1 schwarze 689: free(p);
1.212 schwarze 690: return inloop;
1.1 schwarze 691: }
692:
693: /*
694: * Push a roff node onto the instruction stack. This must later be
695: * removed with roffnode_pop().
696: */
1.11 schwarze 697: static void
1.166 schwarze 698: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.16 schwarze 699: int line, int col)
1.1 schwarze 700: {
701: struct roffnode *p;
702:
1.11 schwarze 703: p = mandoc_calloc(1, sizeof(struct roffnode));
1.1 schwarze 704: p->tok = tok;
1.16 schwarze 705: if (name)
706: p->name = mandoc_strdup(name);
1.1 schwarze 707: p->parent = r->last;
708: p->line = line;
709: p->col = col;
1.71 schwarze 710: p->rule = p->parent ? p->parent->rule : 0;
1.1 schwarze 711:
712: r->last = p;
713: }
714:
1.138 schwarze 715: /* --- roff parser state data management ---------------------------------- */
716:
1.1 schwarze 717: static void
718: roff_free1(struct roff *r)
719: {
1.42 schwarze 720: int i;
1.27 schwarze 721:
1.218 schwarze 722: tbl_free(r->first_tbl);
1.27 schwarze 723: r->first_tbl = r->last_tbl = r->tbl = NULL;
1.1 schwarze 724:
1.219 schwarze 725: eqn_free(r->last_eqn);
1.191 schwarze 726: r->last_eqn = r->eqn = NULL;
1.32 schwarze 727:
1.211 schwarze 728: while (r->mstackpos >= 0)
729: roff_userret(r);
730:
1.1 schwarze 731: while (r->last)
732: roffnode_pop(r);
1.27 schwarze 733:
1.96 schwarze 734: free (r->rstack);
735: r->rstack = NULL;
736: r->rstacksz = 0;
737: r->rstackpos = -1;
738:
739: roff_freereg(r->regtab);
740: r->regtab = NULL;
741:
1.42 schwarze 742: roff_freestr(r->strtab);
1.178 schwarze 743: roff_freestr(r->rentab);
1.42 schwarze 744: roff_freestr(r->xmbtab);
1.178 schwarze 745: r->strtab = r->rentab = r->xmbtab = NULL;
1.42 schwarze 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 = '\\';
1.179 schwarze 761: roffce_lines = 0;
762: roffce_node = NULL;
763: roffit_lines = 0;
764: roffit_macro = NULL;
1.1 schwarze 765: }
766:
767: void
768: roff_free(struct roff *r)
769: {
1.211 schwarze 770: int i;
771:
1.1 schwarze 772: roff_free1(r);
1.211 schwarze 773: for (i = 0; i < r->mstacksz; i++)
774: free(r->mstack[i].argv);
775: free(r->mstack);
1.167 schwarze 776: roffhash_free(r->reqtab);
1.1 schwarze 777: free(r);
778: }
779:
780: struct roff *
1.151 schwarze 781: roff_alloc(struct mparse *parse, int options)
1.1 schwarze 782: {
783: struct roff *r;
784:
1.11 schwarze 785: r = mandoc_calloc(1, sizeof(struct roff));
1.35 schwarze 786: r->parse = parse;
1.200 schwarze 787: r->reqtab = roffhash_alloc(0, ROFF_RENAMED);
1.72 schwarze 788: r->options = options;
1.99 schwarze 789: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.211 schwarze 790: r->mstackpos = -1;
1.2 schwarze 791: r->rstackpos = -1;
1.175 schwarze 792: r->escape = '\\';
1.149 schwarze 793: return r;
1.137 schwarze 794: }
795:
1.138 schwarze 796: /* --- syntax tree state data management ---------------------------------- */
797:
1.137 schwarze 798: static void
799: roff_man_free1(struct roff_man *man)
800: {
801:
1.138 schwarze 802: if (man->first != NULL)
803: roff_node_delete(man, man->first);
1.137 schwarze 804: free(man->meta.msec);
805: free(man->meta.vol);
806: free(man->meta.os);
807: free(man->meta.arch);
808: free(man->meta.title);
809: free(man->meta.name);
810: free(man->meta.date);
811: }
812:
813: static void
814: roff_man_alloc1(struct roff_man *man)
815: {
816:
817: memset(&man->meta, 0, sizeof(man->meta));
818: man->first = mandoc_calloc(1, sizeof(*man->first));
819: man->first->type = ROFFT_ROOT;
820: man->last = man->first;
821: man->last_es = NULL;
822: man->flags = 0;
823: man->macroset = MACROSET_NONE;
824: man->lastsec = man->lastnamed = SEC_NONE;
825: man->next = ROFF_NEXT_CHILD;
826: }
827:
828: void
829: roff_man_reset(struct roff_man *man)
830: {
831:
832: roff_man_free1(man);
833: roff_man_alloc1(man);
834: }
835:
836: void
837: roff_man_free(struct roff_man *man)
838: {
839:
840: roff_man_free1(man);
841: free(man);
842: }
843:
844: struct roff_man *
845: roff_man_alloc(struct roff *roff, struct mparse *parse,
1.188 schwarze 846: const char *os_s, int quick)
1.137 schwarze 847: {
848: struct roff_man *man;
849:
850: man = mandoc_calloc(1, sizeof(*man));
851: man->parse = parse;
852: man->roff = roff;
1.188 schwarze 853: man->os_s = os_s;
1.137 schwarze 854: man->quick = quick;
855: roff_man_alloc1(man);
1.168 schwarze 856: roff->man = man;
1.149 schwarze 857: return man;
1.1 schwarze 858: }
859:
1.138 schwarze 860: /* --- syntax tree handling ----------------------------------------------- */
861:
862: struct roff_node *
863: roff_node_alloc(struct roff_man *man, int line, int pos,
864: enum roff_type type, int tok)
865: {
866: struct roff_node *n;
867:
868: n = mandoc_calloc(1, sizeof(*n));
869: n->line = line;
870: n->pos = pos;
871: n->tok = tok;
872: n->type = type;
873: n->sec = man->lastsec;
874:
875: if (man->flags & MDOC_SYNOPSIS)
1.157 schwarze 876: n->flags |= NODE_SYNPRETTY;
1.138 schwarze 877: else
1.157 schwarze 878: n->flags &= ~NODE_SYNPRETTY;
1.138 schwarze 879: if (man->flags & MDOC_NEWLINE)
1.157 schwarze 880: n->flags |= NODE_LINE;
1.138 schwarze 881: man->flags &= ~MDOC_NEWLINE;
882:
1.149 schwarze 883: return n;
1.138 schwarze 884: }
885:
886: void
887: roff_node_append(struct roff_man *man, struct roff_node *n)
888: {
889:
890: switch (man->next) {
891: case ROFF_NEXT_SIBLING:
1.153 schwarze 892: if (man->last->next != NULL) {
893: n->next = man->last->next;
894: man->last->next->prev = n;
895: } else
896: man->last->parent->last = n;
1.138 schwarze 897: man->last->next = n;
898: n->prev = man->last;
899: n->parent = man->last->parent;
900: break;
901: case ROFF_NEXT_CHILD:
1.159 schwarze 902: if (man->last->child != NULL) {
903: n->next = man->last->child;
904: man->last->child->prev = n;
905: } else
906: man->last->last = n;
1.138 schwarze 907: man->last->child = n;
908: n->parent = man->last;
909: break;
910: default:
911: abort();
912: }
1.154 schwarze 913: man->last = n;
1.138 schwarze 914:
915: switch (n->type) {
916: case ROFFT_HEAD:
917: n->parent->head = n;
918: break;
919: case ROFFT_BODY:
1.154 schwarze 920: if (n->end != ENDBODY_NOT)
921: return;
1.138 schwarze 922: n->parent->body = n;
923: break;
924: case ROFFT_TAIL:
925: n->parent->tail = n;
926: break;
927: default:
1.154 schwarze 928: return;
1.138 schwarze 929: }
1.154 schwarze 930:
931: /*
932: * Copy over the normalised-data pointer of our parent. Not
933: * everybody has one, but copying a null pointer is fine.
934: */
935:
936: n->norm = n->parent->norm;
937: assert(n->parent->type == ROFFT_BLOCK);
1.138 schwarze 938: }
939:
1.139 schwarze 940: void
941: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
942: {
943: struct roff_node *n;
944:
945: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
946: n->string = roff_strdup(man->roff, word);
947: roff_node_append(man, n);
1.158 schwarze 948: n->flags |= NODE_VALID | NODE_ENDED;
1.139 schwarze 949: man->next = ROFF_NEXT_SIBLING;
950: }
951:
952: void
953: roff_word_append(struct roff_man *man, const char *word)
954: {
955: struct roff_node *n;
956: char *addstr, *newstr;
957:
958: n = man->last;
959: addstr = roff_strdup(man->roff, word);
960: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
961: free(addstr);
962: free(n->string);
963: n->string = newstr;
964: man->next = ROFF_NEXT_SIBLING;
1.140 schwarze 965: }
966:
967: void
968: roff_elem_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_ELEM, tok);
973: roff_node_append(man, n);
974: man->next = ROFF_NEXT_CHILD;
975: }
976:
977: struct roff_node *
978: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
979: {
980: struct roff_node *n;
981:
982: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
983: roff_node_append(man, n);
984: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 985: return n;
1.139 schwarze 986: }
987:
1.138 schwarze 988: struct roff_node *
989: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
990: {
991: struct roff_node *n;
992:
993: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
994: roff_node_append(man, n);
995: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 996: return n;
1.138 schwarze 997: }
998:
999: struct roff_node *
1000: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1001: {
1002: struct roff_node *n;
1003:
1004: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1005: roff_node_append(man, n);
1006: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 1007: return n;
1.139 schwarze 1008: }
1009:
1.193 schwarze 1010: static void
1.218 schwarze 1011: roff_addtbl(struct roff_man *man, int line, struct tbl_node *tbl)
1.139 schwarze 1012: {
1013: struct roff_node *n;
1.218 schwarze 1014: struct tbl_span *span;
1.139 schwarze 1015:
1016: if (man->macroset == MACROSET_MAN)
1.174 schwarze 1017: man_breakscope(man, ROFF_TS);
1.193 schwarze 1018: while ((span = tbl_span(tbl)) != NULL) {
1.218 schwarze 1019: n = roff_node_alloc(man, line, 0, ROFFT_TBL, TOKEN_NONE);
1.193 schwarze 1020: n->span = span;
1021: roff_node_append(man, n);
1022: n->flags |= NODE_VALID | NODE_ENDED;
1023: man->next = ROFF_NEXT_SIBLING;
1024: }
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;
1.216 schwarze 1062: }
1063:
1064: void
1065: roff_node_relink(struct roff_man *man, struct roff_node *n)
1066: {
1067: roff_node_unlink(man, n);
1068: n->prev = n->next = NULL;
1069: roff_node_append(man, n);
1.138 schwarze 1070: }
1071:
1072: void
1073: roff_node_free(struct roff_node *n)
1074: {
1075:
1076: if (n->args != NULL)
1077: mdoc_argv_free(n->args);
1078: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1079: free(n->norm);
1.219 schwarze 1080: eqn_box_free(n->eqn);
1.138 schwarze 1081: free(n->string);
1082: free(n);
1083: }
1084:
1085: void
1086: roff_node_delete(struct roff_man *man, struct roff_node *n)
1087: {
1088:
1089: while (n->child != NULL)
1090: roff_node_delete(man, n->child);
1091: roff_node_unlink(man, n);
1092: roff_node_free(n);
1.141 schwarze 1093: }
1094:
1095: void
1096: deroff(char **dest, const struct roff_node *n)
1097: {
1098: char *cp;
1099: size_t sz;
1100:
1101: if (n->type != ROFFT_TEXT) {
1102: for (n = n->child; n != NULL; n = n->next)
1103: deroff(dest, n);
1104: return;
1105: }
1106:
1.160 schwarze 1107: /* Skip leading whitespace. */
1.141 schwarze 1108:
1.160 schwarze 1109: for (cp = n->string; *cp != '\0'; cp++) {
1.161 schwarze 1110: if (cp[0] == '\\' && cp[1] != '\0' &&
1111: strchr(" %&0^|~", cp[1]) != NULL)
1.141 schwarze 1112: cp++;
1.160 schwarze 1113: else if ( ! isspace((unsigned char)*cp))
1.141 schwarze 1114: break;
1115: }
1116:
1.161 schwarze 1117: /* Skip trailing backslash. */
1118:
1119: sz = strlen(cp);
1.162 schwarze 1120: if (sz > 0 && cp[sz - 1] == '\\')
1.161 schwarze 1121: sz--;
1122:
1.141 schwarze 1123: /* Skip trailing whitespace. */
1124:
1.161 schwarze 1125: for (; sz; sz--)
1.141 schwarze 1126: if ( ! isspace((unsigned char)cp[sz-1]))
1127: break;
1128:
1129: /* Skip empty strings. */
1130:
1131: if (sz == 0)
1132: return;
1133:
1134: if (*dest == NULL) {
1135: *dest = mandoc_strndup(cp, sz);
1136: return;
1137: }
1138:
1139: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1140: free(*dest);
1141: *dest = cp;
1.138 schwarze 1142: }
1143:
1144: /* --- main functions of the roff parser ---------------------------------- */
1145:
1.8 schwarze 1146: /*
1.79 schwarze 1147: * In the current line, expand escape sequences that tend to get
1148: * used in numerical expressions and conditional requests.
1149: * Also check the syntax of the remaining escape sequences.
1.8 schwarze 1150: */
1.212 schwarze 1151: static int
1.110 schwarze 1152: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.8 schwarze 1153: {
1.211 schwarze 1154: struct mctx *ctx; /* current macro call context */
1.81 schwarze 1155: char ubuf[24]; /* buffer to print the number */
1.200 schwarze 1156: struct roff_node *n; /* used for header comments */
1.78 schwarze 1157: const char *start; /* start of the string to process */
1.82 schwarze 1158: char *stesc; /* start of an escape sequence ('\\') */
1.200 schwarze 1159: char *ep; /* end of comment string */
1.23 schwarze 1160: const char *stnam; /* start of the name, after "[(*" */
1161: const char *cp; /* end of the name, e.g. before ']' */
1162: const char *res; /* the string to be substituted */
1.110 schwarze 1163: char *nbuf; /* new buffer to copy buf->buf to */
1.53 schwarze 1164: size_t maxl; /* expected length of the escape name */
1165: size_t naml; /* actual length of the escape name */
1.211 schwarze 1166: size_t asz; /* length of the replacement */
1167: size_t rsz; /* length of the rest of the string */
1.109 schwarze 1168: enum mandoc_esc esc; /* type of the escape sequence */
1169: int inaml; /* length returned from mandoc_escape() */
1.53 schwarze 1170: int expand_count; /* to avoid infinite loops */
1.79 schwarze 1171: int npos; /* position in numeric expression */
1.91 schwarze 1172: int arg_complete; /* argument not interrupted by eol */
1.211 schwarze 1173: int quote_args; /* true for \\$@, false for \\$* */
1.175 schwarze 1174: int done; /* no more input available */
1.187 schwarze 1175: int deftype; /* type of definition to paste */
1.195 schwarze 1176: int rcsid; /* kind of RCS id seen */
1.199 schwarze 1177: char sign; /* increment number register */
1.79 schwarze 1178: char term; /* character terminating the escape */
1.8 schwarze 1179:
1.175 schwarze 1180: /* Search forward for comments. */
1181:
1182: done = 0;
1183: start = buf->buf + pos;
1184: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1185: if (stesc[0] != r->escape || stesc[1] == '\0')
1186: continue;
1187: stesc++;
1188: if (*stesc != '"' && *stesc != '#')
1189: continue;
1.185 schwarze 1190:
1191: /* Comment found, look for RCS id. */
1192:
1.195 schwarze 1193: rcsid = 0;
1.185 schwarze 1194: if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
1.195 schwarze 1195: rcsid = 1 << MANDOC_OS_OPENBSD;
1.185 schwarze 1196: cp += 8;
1197: } else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
1.195 schwarze 1198: rcsid = 1 << MANDOC_OS_NETBSD;
1.185 schwarze 1199: cp += 7;
1200: }
1201: if (cp != NULL &&
1202: isalnum((unsigned char)*cp) == 0 &&
1.186 schwarze 1203: strchr(cp, '$') != NULL) {
1.195 schwarze 1204: if (r->man->meta.rcsids & rcsid)
1.222 ! schwarze 1205: mandoc_msg(MANDOCERR_RCS_REP, ln,
! 1206: (int)(stesc - buf->buf) + 1,
! 1207: "%s", stesc + 1);
1.195 schwarze 1208: r->man->meta.rcsids |= rcsid;
1.186 schwarze 1209: }
1.185 schwarze 1210:
1211: /* Handle trailing whitespace. */
1212:
1.200 schwarze 1213: ep = strchr(stesc--, '\0') - 1;
1214: if (*ep == '\n') {
1.175 schwarze 1215: done = 1;
1.200 schwarze 1216: ep--;
1.175 schwarze 1217: }
1.200 schwarze 1218: if (*ep == ' ' || *ep == '\t')
1.222 ! schwarze 1219: mandoc_msg(MANDOCERR_SPACE_EOL,
! 1220: ln, (int)(ep - buf->buf), NULL);
1.200 schwarze 1221:
1222: /*
1223: * Save comments preceding the title macro
1224: * in the syntax tree.
1225: */
1226:
1227: if (r->format == 0) {
1228: while (*ep == ' ' || *ep == '\t')
1229: ep--;
1230: ep[1] = '\0';
1231: n = roff_node_alloc(r->man,
1232: ln, stesc + 1 - buf->buf,
1233: ROFFT_COMMENT, TOKEN_NONE);
1234: n->string = mandoc_strdup(stesc + 2);
1235: roff_node_append(r->man, n);
1236: n->flags |= NODE_VALID | NODE_ENDED;
1237: r->man->next = ROFF_NEXT_SIBLING;
1238: }
1239:
1.206 schwarze 1240: /* Line continuation with comment. */
1241:
1242: if (stesc[1] == '#') {
1243: *stesc = '\0';
1.212 schwarze 1244: return ROFF_IGN | ROFF_APPEND;
1.206 schwarze 1245: }
1246:
1247: /* Discard normal comments. */
1.200 schwarze 1248:
1.207 schwarze 1249: while (stesc > start && stesc[-1] == ' ' &&
1250: (stesc == start + 1 || stesc[-2] != '\\'))
1.175 schwarze 1251: stesc--;
1252: *stesc = '\0';
1253: break;
1254: }
1255: if (stesc == start)
1256: return ROFF_CONT;
1257: stesc--;
1258:
1259: /* Notice the end of the input. */
1260:
1261: if (*stesc == '\n') {
1262: *stesc-- = '\0';
1263: done = 1;
1264: }
1265:
1.43 schwarze 1266: expand_count = 0;
1.175 schwarze 1267: while (stesc >= start) {
1.43 schwarze 1268:
1.78 schwarze 1269: /* Search backwards for the next backslash. */
1270:
1.175 schwarze 1271: if (*stesc != r->escape) {
1272: if (*stesc == '\\') {
1273: *stesc = '\0';
1274: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1275: buf->buf, stesc + 1) + 1;
1276: start = nbuf + pos;
1277: stesc = nbuf + (stesc - buf->buf);
1278: free(buf->buf);
1279: buf->buf = nbuf;
1280: }
1281: stesc--;
1.78 schwarze 1282: continue;
1.175 schwarze 1283: }
1.78 schwarze 1284:
1285: /* If it is escaped, skip it. */
1286:
1287: for (cp = stesc - 1; cp >= start; cp--)
1.175 schwarze 1288: if (*cp != r->escape)
1.78 schwarze 1289: break;
1290:
1.110 schwarze 1291: if ((stesc - cp) % 2 == 0) {
1.175 schwarze 1292: while (stesc > cp)
1293: *stesc-- = '\\';
1.78 schwarze 1294: continue;
1.175 schwarze 1295: } else if (stesc[1] != '\0') {
1296: *stesc = '\\';
1297: } else {
1298: *stesc-- = '\0';
1299: if (done)
1300: continue;
1301: else
1.212 schwarze 1302: return ROFF_IGN | ROFF_APPEND;
1.78 schwarze 1303: }
1.23 schwarze 1304:
1.79 schwarze 1305: /* Decide whether to expand or to check only. */
1.23 schwarze 1306:
1.79 schwarze 1307: term = '\0';
1.78 schwarze 1308: cp = stesc + 1;
1.53 schwarze 1309: switch (*cp) {
1.80 schwarze 1310: case '*':
1.211 schwarze 1311: case '$':
1.53 schwarze 1312: res = NULL;
1313: break;
1.80 schwarze 1314: case 'B':
1315: case 'w':
1.79 schwarze 1316: term = cp[1];
1317: /* FALLTHROUGH */
1.80 schwarze 1318: case 'n':
1.199 schwarze 1319: sign = cp[1];
1320: if (sign == '+' || sign == '-')
1321: cp++;
1.53 schwarze 1322: res = ubuf;
1323: break;
1324: default:
1.109 schwarze 1325: esc = mandoc_escape(&cp, &stnam, &inaml);
1326: if (esc == ESCAPE_ERROR ||
1327: (esc == ESCAPE_SPECIAL &&
1.151 schwarze 1328: mchars_spec2cp(stnam, inaml) < 0))
1.222 ! schwarze 1329: mandoc_msg(MANDOCERR_ESC_BAD,
! 1330: ln, (int)(stesc - buf->buf),
1.92 schwarze 1331: "%.*s", (int)(cp - stesc), stesc);
1.175 schwarze 1332: stesc--;
1.78 schwarze 1333: continue;
1.42 schwarze 1334: }
1335:
1.78 schwarze 1336: if (EXPAND_LIMIT < ++expand_count) {
1.222 ! schwarze 1337: mandoc_msg(MANDOCERR_ROFFLOOP,
1.110 schwarze 1338: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1339: return ROFF_IGN;
1.78 schwarze 1340: }
1.23 schwarze 1341:
1342: /*
1343: * The third character decides the length
1.53 schwarze 1344: * of the name of the string or register.
1.23 schwarze 1345: * Save a pointer to the name.
1346: */
1347:
1.110 schwarze 1348: if (term == '\0') {
1.79 schwarze 1349: switch (*++cp) {
1.80 schwarze 1350: case '\0':
1.79 schwarze 1351: maxl = 0;
1352: break;
1.80 schwarze 1353: case '(':
1.79 schwarze 1354: cp++;
1355: maxl = 2;
1356: break;
1.80 schwarze 1357: case '[':
1.79 schwarze 1358: cp++;
1359: term = ']';
1360: maxl = 0;
1361: break;
1362: default:
1363: maxl = 1;
1364: break;
1365: }
1366: } else {
1367: cp += 2;
1.8 schwarze 1368: maxl = 0;
1369: }
1.23 schwarze 1370: stnam = cp;
1.8 schwarze 1371:
1.23 schwarze 1372: /* Advance to the end of the name. */
1.8 schwarze 1373:
1.125 schwarze 1374: naml = 0;
1.91 schwarze 1375: arg_complete = 1;
1.125 schwarze 1376: while (maxl == 0 || naml < maxl) {
1.110 schwarze 1377: if (*cp == '\0') {
1.222 ! schwarze 1378: mandoc_msg(MANDOCERR_ESC_BAD, ln,
! 1379: (int)(stesc - buf->buf), "%s", stesc);
1.91 schwarze 1380: arg_complete = 0;
1.79 schwarze 1381: break;
1.42 schwarze 1382: }
1.110 schwarze 1383: if (maxl == 0 && *cp == term) {
1.79 schwarze 1384: cp++;
1.125 schwarze 1385: break;
1386: }
1387: if (*cp++ != '\\' || stesc[1] != 'w') {
1388: naml++;
1389: continue;
1390: }
1391: switch (mandoc_escape(&cp, NULL, NULL)) {
1392: case ESCAPE_SPECIAL:
1393: case ESCAPE_UNICODE:
1394: case ESCAPE_NUMBERED:
1395: case ESCAPE_OVERSTRIKE:
1396: naml++;
1397: break;
1398: default:
1.8 schwarze 1399: break;
1.79 schwarze 1400: }
1.8 schwarze 1401: }
1402:
1.23 schwarze 1403: /*
1404: * Retrieve the replacement string; if it is
1405: * undefined, resume searching for escapes.
1406: */
1407:
1.79 schwarze 1408: switch (stesc[1]) {
1.80 schwarze 1409: case '*':
1.187 schwarze 1410: if (arg_complete) {
1411: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1412: res = roff_getstrn(r, stnam, naml, &deftype);
1.203 schwarze 1413:
1414: /*
1415: * If not overriden, let \*(.T
1416: * through to the formatters.
1417: */
1418:
1419: if (res == NULL && naml == 2 &&
1420: stnam[0] == '.' && stnam[1] == 'T') {
1421: roff_setstrn(&r->strtab,
1422: ".T", 2, NULL, 0, 0);
1423: stesc--;
1424: continue;
1425: }
1.187 schwarze 1426: }
1.79 schwarze 1427: break;
1.211 schwarze 1428: case '$':
1429: if (r->mstackpos < 0) {
1.222 ! schwarze 1430: mandoc_msg(MANDOCERR_ARG_UNDEF, ln,
! 1431: (int)(stesc - buf->buf), "%.3s", stesc);
1.211 schwarze 1432: break;
1433: }
1434: ctx = r->mstack + r->mstackpos;
1435: npos = stesc[2] - '1';
1436: if (npos >= 0 && npos <= 8) {
1437: res = npos < ctx->argc ?
1438: ctx->argv[npos] : "";
1439: break;
1440: }
1441: if (stesc[2] == '*')
1442: quote_args = 0;
1443: else if (stesc[2] == '@')
1444: quote_args = 1;
1445: else {
1.222 ! schwarze 1446: mandoc_msg(MANDOCERR_ARG_NONUM, ln,
! 1447: (int)(stesc - buf->buf), "%.3s", stesc);
1.211 schwarze 1448: break;
1449: }
1450: asz = 0;
1451: for (npos = 0; npos < ctx->argc; npos++) {
1452: if (npos)
1453: asz++; /* blank */
1454: if (quote_args)
1455: asz += 2; /* quotes */
1456: asz += strlen(ctx->argv[npos]);
1457: }
1458: if (asz != 3) {
1459: rsz = buf->sz - (stesc - buf->buf) - 3;
1460: if (asz < 3)
1461: memmove(stesc + asz, stesc + 3, rsz);
1462: buf->sz += asz - 3;
1463: nbuf = mandoc_realloc(buf->buf, buf->sz);
1464: start = nbuf + pos;
1465: stesc = nbuf + (stesc - buf->buf);
1466: buf->buf = nbuf;
1467: if (asz > 3)
1468: memmove(stesc + asz, stesc + 3, rsz);
1469: }
1470: for (npos = 0; npos < ctx->argc; npos++) {
1471: if (npos)
1472: *stesc++ = ' ';
1473: if (quote_args)
1474: *stesc++ = '"';
1475: cp = ctx->argv[npos];
1476: while (*cp != '\0')
1477: *stesc++ = *cp++;
1478: if (quote_args)
1479: *stesc++ = '"';
1480: }
1481: continue;
1.80 schwarze 1482: case 'B':
1.79 schwarze 1483: npos = 0;
1.91 schwarze 1484: ubuf[0] = arg_complete &&
1.133 schwarze 1485: roff_evalnum(r, ln, stnam, &npos,
1486: NULL, ROFFNUM_SCALE) &&
1.91 schwarze 1487: stnam + npos + 1 == cp ? '1' : '0';
1.79 schwarze 1488: ubuf[1] = '\0';
1489: break;
1.80 schwarze 1490: case 'n':
1.91 schwarze 1491: if (arg_complete)
1492: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.199 schwarze 1493: roff_getregn(r, stnam, naml, sign));
1.91 schwarze 1494: else
1495: ubuf[0] = '\0';
1.79 schwarze 1496: break;
1.80 schwarze 1497: case 'w':
1.91 schwarze 1498: /* use even incomplete args */
1.81 schwarze 1499: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.79 schwarze 1500: 24 * (int)naml);
1501: break;
1502: }
1.8 schwarze 1503:
1.110 schwarze 1504: if (res == NULL) {
1.211 schwarze 1505: if (stesc[1] == '*')
1.222 ! schwarze 1506: mandoc_msg(MANDOCERR_STR_UNDEF,
! 1507: ln, (int)(stesc - buf->buf),
1.211 schwarze 1508: "%.*s", (int)naml, stnam);
1.37 schwarze 1509: res = "";
1.118 schwarze 1510: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1.222 ! schwarze 1511: mandoc_msg(MANDOCERR_ROFFLOOP,
1.118 schwarze 1512: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1513: return ROFF_IGN;
1.8 schwarze 1514: }
1515:
1.23 schwarze 1516: /* Replace the escape sequence by the string. */
1517:
1.82 schwarze 1518: *stesc = '\0';
1.110 schwarze 1519: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1520: buf->buf, res, cp) + 1;
1.8 schwarze 1521:
1.78 schwarze 1522: /* Prepare for the next replacement. */
1.8 schwarze 1523:
1.78 schwarze 1524: start = nbuf + pos;
1.110 schwarze 1525: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1526: free(buf->buf);
1527: buf->buf = nbuf;
1.42 schwarze 1528: }
1.149 schwarze 1529: return ROFF_CONT;
1.42 schwarze 1530: }
1531:
1532: /*
1.147 schwarze 1533: * Process text streams.
1.42 schwarze 1534: */
1.212 schwarze 1535: static int
1.177 schwarze 1536: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.42 schwarze 1537: {
1538: size_t sz;
1539: const char *start;
1.51 schwarze 1540: char *p;
1541: int isz;
1.42 schwarze 1542: enum mandoc_esc esc;
1543:
1.147 schwarze 1544: /* Spring the input line trap. */
1545:
1546: if (roffit_lines == 1) {
1547: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1548: free(buf->buf);
1549: buf->buf = p;
1550: buf->sz = isz + 1;
1551: *offs = 0;
1552: free(roffit_macro);
1553: roffit_lines = 0;
1.149 schwarze 1554: return ROFF_REPARSE;
1.147 schwarze 1555: } else if (roffit_lines > 1)
1556: --roffit_lines;
1557:
1.177 schwarze 1558: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1559: if (roffce_lines < 1) {
1560: r->man->last = roffce_node;
1561: r->man->next = ROFF_NEXT_SIBLING;
1562: roffce_lines = 0;
1563: roffce_node = NULL;
1564: } else
1565: roffce_lines--;
1566: }
1567:
1.147 schwarze 1568: /* Convert all breakable hyphens into ASCII_HYPH. */
1569:
1.110 schwarze 1570: start = p = buf->buf + pos;
1.42 schwarze 1571:
1.110 schwarze 1572: while (*p != '\0') {
1.42 schwarze 1573: sz = strcspn(p, "-\\");
1574: p += sz;
1575:
1.110 schwarze 1576: if (*p == '\0')
1.42 schwarze 1577: break;
1578:
1.110 schwarze 1579: if (*p == '\\') {
1.42 schwarze 1580: /* Skip over escapes. */
1581: p++;
1.62 schwarze 1582: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.110 schwarze 1583: if (esc == ESCAPE_ERROR)
1.42 schwarze 1584: break;
1.136 schwarze 1585: while (*p == '-')
1586: p++;
1.42 schwarze 1587: continue;
1588: } else if (p == start) {
1589: p++;
1590: continue;
1591: }
1592:
1.44 schwarze 1593: if (isalpha((unsigned char)p[-1]) &&
1594: isalpha((unsigned char)p[1]))
1.42 schwarze 1595: *p = ASCII_HYPH;
1596: p++;
1.8 schwarze 1597: }
1.149 schwarze 1598: return ROFF_CONT;
1.8 schwarze 1599: }
1600:
1.212 schwarze 1601: int
1.110 schwarze 1602: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.1 schwarze 1603: {
1.166 schwarze 1604: enum roff_tok t;
1.212 schwarze 1605: int e;
1.110 schwarze 1606: int pos; /* parse point */
1.115 schwarze 1607: int spos; /* saved parse point for messages */
1.110 schwarze 1608: int ppos; /* original offset in buf->buf */
1609: int ctl; /* macro line (boolean) */
1610:
1611: ppos = pos = *offs;
1.1 schwarze 1612:
1.102 schwarze 1613: /* Handle in-line equation delimiters. */
1614:
1.108 schwarze 1615: if (r->tbl == NULL &&
1616: r->last_eqn != NULL && r->last_eqn->delim &&
1.102 schwarze 1617: (r->eqn == NULL || r->eqn_inline)) {
1.110 schwarze 1618: e = roff_eqndelim(r, buf, pos);
1.102 schwarze 1619: if (e == ROFF_REPARSE)
1.149 schwarze 1620: return e;
1.102 schwarze 1621: assert(e == ROFF_CONT);
1622: }
1623:
1624: /* Expand some escape sequences. */
1.8 schwarze 1625:
1.110 schwarze 1626: e = roff_res(r, buf, ln, pos);
1.212 schwarze 1627: if ((e & ROFF_MASK) == ROFF_IGN)
1.149 schwarze 1628: return e;
1.110 schwarze 1629: assert(e == ROFF_CONT);
1.8 schwarze 1630:
1.110 schwarze 1631: ctl = roff_getcontrol(r, buf->buf, &pos);
1.35 schwarze 1632:
1.8 schwarze 1633: /*
1.2 schwarze 1634: * First, if a scope is open and we're not a macro, pass the
1.124 schwarze 1635: * text through the macro's filter.
1636: * Equations process all content themselves.
1637: * Tables process almost all content themselves, but we want
1638: * to warn about macros before passing it there.
1.2 schwarze 1639: */
1640:
1.124 schwarze 1641: if (r->last != NULL && ! ctl) {
1.2 schwarze 1642: t = r->last->tok;
1.110 schwarze 1643: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.212 schwarze 1644: if ((e & ROFF_MASK) == ROFF_IGN)
1.149 schwarze 1645: return e;
1.212 schwarze 1646: e &= ~ROFF_MASK;
1647: } else
1648: e = ROFF_IGN;
1.191 schwarze 1649: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1650: eqn_read(r->eqn, buf->buf + ppos);
1.212 schwarze 1651: return e;
1.191 schwarze 1652: }
1.193 schwarze 1653: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1654: tbl_read(r->tbl, ln, buf->buf, ppos);
1.218 schwarze 1655: roff_addtbl(r->man, ln, r->tbl);
1.212 schwarze 1656: return e;
1.193 schwarze 1657: }
1.124 schwarze 1658: if ( ! ctl)
1.212 schwarze 1659: return roff_parsetext(r, buf, pos, offs) | e;
1.100 schwarze 1660:
1661: /* Skip empty request lines. */
1662:
1.110 schwarze 1663: if (buf->buf[pos] == '"') {
1.222 ! schwarze 1664: mandoc_msg(MANDOCERR_COMMENT_BAD, ln, pos, NULL);
1.149 schwarze 1665: return ROFF_IGN;
1.110 schwarze 1666: } else if (buf->buf[pos] == '\0')
1.149 schwarze 1667: return ROFF_IGN;
1.2 schwarze 1668:
1669: /*
1670: * If a scope is open, go to the child handler for that macro,
1671: * as it may want to preprocess before doing anything with it.
1.32 schwarze 1672: * Don't do so if an equation is open.
1.2 schwarze 1673: */
1674:
1675: if (r->last) {
1.1 schwarze 1676: t = r->last->tok;
1.149 schwarze 1677: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1678: }
1679:
1.115 schwarze 1680: /* No scope is open. This is a new request or macro. */
1681:
1682: spos = pos;
1683: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1684:
1685: /* Tables ignore most macros. */
1686:
1.180 schwarze 1687: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.181 schwarze 1688: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.222 ! schwarze 1689: mandoc_msg(MANDOCERR_TBLMACRO,
! 1690: ln, pos, "%s", buf->buf + spos);
1.180 schwarze 1691: if (t != TOKEN_NONE)
1.149 schwarze 1692: return ROFF_IGN;
1.129 schwarze 1693: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1694: pos++;
1.163 schwarze 1695: while (buf->buf[pos] == ' ')
1.129 schwarze 1696: pos++;
1.193 schwarze 1697: tbl_read(r->tbl, ln, buf->buf, pos);
1.218 schwarze 1698: roff_addtbl(r->man, ln, r->tbl);
1.193 schwarze 1699: return ROFF_IGN;
1.115 schwarze 1700: }
1701:
1.177 schwarze 1702: /* For now, let high level macros abort .ce mode. */
1703:
1704: if (ctl && roffce_node != NULL &&
1.196 schwarze 1705: (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
1706: t == ROFF_TH || t == ROFF_TS)) {
1.177 schwarze 1707: r->man->last = roffce_node;
1708: r->man->next = ROFF_NEXT_SIBLING;
1709: roffce_lines = 0;
1710: roffce_node = NULL;
1711: }
1712:
1.2 schwarze 1713: /*
1.115 schwarze 1714: * This is neither a roff request nor a user-defined macro.
1715: * Let the standard macro set parsers handle it.
1.2 schwarze 1716: */
1717:
1.166 schwarze 1718: if (t == TOKEN_NONE)
1.149 schwarze 1719: return ROFF_CONT;
1.115 schwarze 1720:
1721: /* Execute a roff request or a user defined macro. */
1.1 schwarze 1722:
1.168 schwarze 1723: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.2 schwarze 1724: }
1725:
1.211 schwarze 1726: /*
1727: * Internal interface function to tell the roff parser that execution
1728: * of the current macro ended. This is required because macro
1729: * definitions usually do not end with a .return request.
1730: */
1731: void
1732: roff_userret(struct roff *r)
1733: {
1734: struct mctx *ctx;
1735: int i;
1736:
1737: assert(r->mstackpos >= 0);
1738: ctx = r->mstack + r->mstackpos;
1739: for (i = 0; i < ctx->argc; i++)
1740: free(ctx->argv[i]);
1741: ctx->argc = 0;
1742: r->mstackpos--;
1743: }
1744:
1.27 schwarze 1745: void
1.2 schwarze 1746: roff_endparse(struct roff *r)
1747: {
1.193 schwarze 1748: if (r->last != NULL)
1.222 ! schwarze 1749: mandoc_msg(MANDOCERR_BLK_NOEND, r->last->line,
! 1750: r->last->col, "%s", roff_name[r->last->tok]);
1.27 schwarze 1751:
1.193 schwarze 1752: if (r->eqn != NULL) {
1.222 ! schwarze 1753: mandoc_msg(MANDOCERR_BLK_NOEND,
1.191 schwarze 1754: r->eqn->node->line, r->eqn->node->pos, "EQ");
1755: eqn_parse(r->eqn);
1756: r->eqn = NULL;
1.32 schwarze 1757: }
1758:
1.193 schwarze 1759: if (r->tbl != NULL) {
1.218 schwarze 1760: tbl_end(r->tbl, 1);
1.193 schwarze 1761: r->tbl = NULL;
1.27 schwarze 1762: }
1.1 schwarze 1763: }
1764:
1765: /*
1766: * Parse a roff node's type from the input buffer. This must be in the
1767: * form of ".foo xxx" in the usual way.
1768: */
1.166 schwarze 1769: static enum roff_tok
1.87 schwarze 1770: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.1 schwarze 1771: {
1.87 schwarze 1772: char *cp;
1.16 schwarze 1773: const char *mac;
1774: size_t maclen;
1.187 schwarze 1775: int deftype;
1.166 schwarze 1776: enum roff_tok t;
1.1 schwarze 1777:
1.87 schwarze 1778: cp = buf + *pos;
1779:
1780: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.166 schwarze 1781: return TOKEN_NONE;
1.1 schwarze 1782:
1.87 schwarze 1783: mac = cp;
1784: maclen = roff_getname(r, &cp, ln, ppos);
1.1 schwarze 1785:
1.187 schwarze 1786: deftype = ROFFDEF_USER | ROFFDEF_REN;
1787: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
1788: switch (deftype) {
1789: case ROFFDEF_USER:
1790: t = ROFF_USERDEF;
1791: break;
1792: case ROFFDEF_REN:
1793: t = ROFF_RENAMED;
1794: break;
1795: default:
1796: t = roffhash_find(r->reqtab, mac, maclen);
1797: break;
1798: }
1.166 schwarze 1799: if (t != TOKEN_NONE)
1.87 schwarze 1800: *pos = cp - buf;
1.197 schwarze 1801: else if (deftype == ROFFDEF_UNDEF) {
1802: /* Using an undefined macro defines it to be empty. */
1803: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
1804: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
1805: }
1.149 schwarze 1806: return t;
1.1 schwarze 1807: }
1808:
1.138 schwarze 1809: /* --- handling of request blocks ----------------------------------------- */
1810:
1.212 schwarze 1811: static int
1.2 schwarze 1812: roff_cblock(ROFF_ARGS)
1.1 schwarze 1813: {
1814:
1.2 schwarze 1815: /*
1816: * A block-close `..' should only be invoked as a child of an
1817: * ignore macro, otherwise raise a warning and just ignore it.
1818: */
1819:
1.110 schwarze 1820: if (r->last == NULL) {
1.222 ! schwarze 1821: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.149 schwarze 1822: return ROFF_IGN;
1.2 schwarze 1823: }
1.1 schwarze 1824:
1.2 schwarze 1825: switch (r->last->tok) {
1.80 schwarze 1826: case ROFF_am:
1.93 schwarze 1827: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.80 schwarze 1828: case ROFF_ami:
1829: case ROFF_de:
1.23 schwarze 1830: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.80 schwarze 1831: case ROFF_dei:
1832: case ROFF_ig:
1.2 schwarze 1833: break;
1834: default:
1.222 ! schwarze 1835: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.149 schwarze 1836: return ROFF_IGN;
1.2 schwarze 1837: }
1838:
1.110 schwarze 1839: if (buf->buf[pos] != '\0')
1.222 ! schwarze 1840: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.110 schwarze 1841: ".. %s", buf->buf + pos);
1.2 schwarze 1842:
1843: roffnode_pop(r);
1844: roffnode_cleanscope(r);
1.149 schwarze 1845: return ROFF_IGN;
1.2 schwarze 1846:
1847: }
1.1 schwarze 1848:
1.212 schwarze 1849: static int
1.2 schwarze 1850: roffnode_cleanscope(struct roff *r)
1851: {
1.212 schwarze 1852: int inloop;
1.1 schwarze 1853:
1.212 schwarze 1854: inloop = 0;
1855: while (r->last != NULL) {
1.46 schwarze 1856: if (--r->last->endspan != 0)
1.2 schwarze 1857: break;
1.212 schwarze 1858: inloop += roffnode_pop(r);
1.2 schwarze 1859: }
1.212 schwarze 1860: return inloop;
1.2 schwarze 1861: }
1.1 schwarze 1862:
1.212 schwarze 1863: static int
1.68 schwarze 1864: roff_ccond(struct roff *r, int ln, int ppos)
1.2 schwarze 1865: {
1866: if (NULL == r->last) {
1.222 ! schwarze 1867: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.212 schwarze 1868: return 0;
1.2 schwarze 1869: }
1.1 schwarze 1870:
1.2 schwarze 1871: switch (r->last->tok) {
1.80 schwarze 1872: case ROFF_el:
1873: case ROFF_ie:
1874: case ROFF_if:
1.212 schwarze 1875: case ROFF_while:
1.2 schwarze 1876: break;
1877: default:
1.222 ! schwarze 1878: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.212 schwarze 1879: return 0;
1.2 schwarze 1880: }
1.1 schwarze 1881:
1.2 schwarze 1882: if (r->last->endspan > -1) {
1.222 ! schwarze 1883: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.212 schwarze 1884: return 0;
1.2 schwarze 1885: }
1886:
1.212 schwarze 1887: return roffnode_pop(r) + roffnode_cleanscope(r);
1.1 schwarze 1888: }
1889:
1.212 schwarze 1890: static int
1.2 schwarze 1891: roff_block(ROFF_ARGS)
1.1 schwarze 1892: {
1.187 schwarze 1893: const char *name, *value;
1894: char *call, *cp, *iname, *rname;
1895: size_t csz, namesz, rsz;
1896: int deftype;
1.16 schwarze 1897:
1.93 schwarze 1898: /* Ignore groff compatibility mode for now. */
1.2 schwarze 1899:
1.110 schwarze 1900: if (tok == ROFF_de1)
1.93 schwarze 1901: tok = ROFF_de;
1.123 schwarze 1902: else if (tok == ROFF_dei1)
1903: tok = ROFF_dei;
1.110 schwarze 1904: else if (tok == ROFF_am1)
1.93 schwarze 1905: tok = ROFF_am;
1.123 schwarze 1906: else if (tok == ROFF_ami1)
1907: tok = ROFF_ami;
1.93 schwarze 1908:
1909: /* Parse the macro name argument. */
1910:
1.110 schwarze 1911: cp = buf->buf + pos;
1912: if (tok == ROFF_ig) {
1.93 schwarze 1913: iname = NULL;
1914: namesz = 0;
1915: } else {
1916: iname = cp;
1917: namesz = roff_getname(r, &cp, ln, ppos);
1918: iname[namesz] = '\0';
1919: }
1.22 schwarze 1920:
1.93 schwarze 1921: /* Resolve the macro name argument if it is indirect. */
1.22 schwarze 1922:
1.110 schwarze 1923: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.187 schwarze 1924: deftype = ROFFDEF_USER;
1925: name = roff_getstrn(r, iname, namesz, &deftype);
1926: if (name == NULL) {
1.222 ! schwarze 1927: mandoc_msg(MANDOCERR_STR_UNDEF,
! 1928: ln, (int)(iname - buf->buf),
1.93 schwarze 1929: "%.*s", (int)namesz, iname);
1930: namesz = 0;
1931: } else
1932: namesz = strlen(name);
1933: } else
1934: name = iname;
1.22 schwarze 1935:
1.110 schwarze 1936: if (namesz == 0 && tok != ROFF_ig) {
1.222 ! schwarze 1937: mandoc_msg(MANDOCERR_REQ_EMPTY,
! 1938: ln, ppos, "%s", roff_name[tok]);
1.149 schwarze 1939: return ROFF_IGN;
1.93 schwarze 1940: }
1.2 schwarze 1941:
1.16 schwarze 1942: roffnode_push(r, tok, name, ln, ppos);
1943:
1944: /*
1945: * At the beginning of a `de' macro, clear the existing string
1946: * with the same name, if there is one. New content will be
1.66 schwarze 1947: * appended from roff_block_text() in multiline mode.
1.16 schwarze 1948: */
1.22 schwarze 1949:
1.183 schwarze 1950: if (tok == ROFF_de || tok == ROFF_dei) {
1.86 schwarze 1951: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.183 schwarze 1952: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.187 schwarze 1953: } else if (tok == ROFF_am || tok == ROFF_ami) {
1954: deftype = ROFFDEF_ANY;
1955: value = roff_getstrn(r, iname, namesz, &deftype);
1956: switch (deftype) { /* Before appending, ... */
1957: case ROFFDEF_PRE: /* copy predefined to user-defined. */
1958: roff_setstrn(&r->strtab, name, namesz,
1959: value, strlen(value), 0);
1960: break;
1961: case ROFFDEF_REN: /* call original standard macro. */
1962: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1963: (int)strlen(value), value);
1964: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1965: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1966: free(call);
1967: break;
1968: case ROFFDEF_STD: /* rename and call standard macro. */
1969: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
1970: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
1971: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1972: (int)rsz, rname);
1973: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1974: free(call);
1975: free(rname);
1976: break;
1977: default:
1978: break;
1979: }
1.183 schwarze 1980: }
1.2 schwarze 1981:
1.110 schwarze 1982: if (*cp == '\0')
1.149 schwarze 1983: return ROFF_IGN;
1.1 schwarze 1984:
1.93 schwarze 1985: /* Get the custom end marker. */
1.22 schwarze 1986:
1.93 schwarze 1987: iname = cp;
1.86 schwarze 1988: namesz = roff_getname(r, &cp, ln, ppos);
1.93 schwarze 1989:
1990: /* Resolve the end marker if it is indirect. */
1991:
1.110 schwarze 1992: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.187 schwarze 1993: deftype = ROFFDEF_USER;
1994: name = roff_getstrn(r, iname, namesz, &deftype);
1995: if (name == NULL) {
1.222 ! schwarze 1996: mandoc_msg(MANDOCERR_STR_UNDEF,
! 1997: ln, (int)(iname - buf->buf),
1.93 schwarze 1998: "%.*s", (int)namesz, iname);
1999: namesz = 0;
2000: } else
2001: namesz = strlen(name);
2002: } else
2003: name = iname;
2004:
1.86 schwarze 2005: if (namesz)
2006: r->last->end = mandoc_strndup(name, namesz);
1.2 schwarze 2007:
1.110 schwarze 2008: if (*cp != '\0')
1.222 ! schwarze 2009: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.167 schwarze 2010: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.1 schwarze 2011:
1.149 schwarze 2012: return ROFF_IGN;
1.1 schwarze 2013: }
2014:
1.212 schwarze 2015: static int
1.2 schwarze 2016: roff_block_sub(ROFF_ARGS)
1.1 schwarze 2017: {
1.166 schwarze 2018: enum roff_tok t;
1.2 schwarze 2019: int i, j;
2020:
2021: /*
2022: * First check whether a custom macro exists at this level. If
2023: * it does, then check against it. This is some of groff's
2024: * stranger behaviours. If we encountered a custom end-scope
2025: * tag and that tag also happens to be a "real" macro, then we
2026: * need to try interpreting it again as a real macro. If it's
2027: * not, then return ignore. Else continue.
2028: */
2029:
2030: if (r->last->end) {
1.35 schwarze 2031: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.110 schwarze 2032: if (buf->buf[i] != r->last->end[j])
1.2 schwarze 2033: break;
1.1 schwarze 2034:
1.110 schwarze 2035: if (r->last->end[j] == '\0' &&
2036: (buf->buf[i] == '\0' ||
2037: buf->buf[i] == ' ' ||
2038: buf->buf[i] == '\t')) {
1.2 schwarze 2039: roffnode_pop(r);
2040: roffnode_cleanscope(r);
1.1 schwarze 2041:
1.110 schwarze 2042: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.35 schwarze 2043: i++;
2044:
2045: pos = i;
1.110 schwarze 2046: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.166 schwarze 2047: TOKEN_NONE)
1.149 schwarze 2048: return ROFF_RERUN;
2049: return ROFF_IGN;
1.2 schwarze 2050: }
1.1 schwarze 2051: }
2052:
1.2 schwarze 2053: /*
2054: * If we have no custom end-query or lookup failed, then try
2055: * pulling it out of the hashtable.
2056: */
1.1 schwarze 2057:
1.110 schwarze 2058: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.1 schwarze 2059:
1.110 schwarze 2060: if (t != ROFF_cblock) {
2061: if (tok != ROFF_ig)
2062: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.149 schwarze 2063: return ROFF_IGN;
1.16 schwarze 2064: }
1.1 schwarze 2065:
1.149 schwarze 2066: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 2067: }
2068:
1.212 schwarze 2069: static int
1.2 schwarze 2070: roff_block_text(ROFF_ARGS)
2071: {
2072:
1.110 schwarze 2073: if (tok != ROFF_ig)
2074: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.16 schwarze 2075:
1.149 schwarze 2076: return ROFF_IGN;
1.2 schwarze 2077: }
2078:
1.212 schwarze 2079: static int
1.2 schwarze 2080: roff_cond_sub(ROFF_ARGS)
2081: {
1.212 schwarze 2082: char *ep;
2083: int endloop, irc, rr;
1.166 schwarze 2084: enum roff_tok t;
1.2 schwarze 2085:
1.212 schwarze 2086: irc = ROFF_IGN;
1.2 schwarze 2087: rr = r->last->rule;
1.212 schwarze 2088: endloop = tok != ROFF_while ? ROFF_IGN :
2089: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2090: if (roffnode_cleanscope(r))
2091: irc |= endloop;
1.39 schwarze 2092:
1.69 schwarze 2093: /*
2094: * If `\}' occurs on a macro line without a preceding macro,
2095: * drop the line completely.
2096: */
2097:
1.110 schwarze 2098: ep = buf->buf + pos;
2099: if (ep[0] == '\\' && ep[1] == '}')
1.71 schwarze 2100: rr = 0;
1.69 schwarze 2101:
1.215 schwarze 2102: /*
2103: * The closing delimiter `\}' rewinds the conditional scope
2104: * but is otherwise ignored when interpreting the line.
2105: */
1.39 schwarze 2106:
1.110 schwarze 2107: while ((ep = strchr(ep, '\\')) != NULL) {
1.190 schwarze 2108: switch (ep[1]) {
2109: case '}':
2110: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1.212 schwarze 2111: if (roff_ccond(r, ln, ep - buf->buf))
2112: irc |= endloop;
1.190 schwarze 2113: break;
2114: case '\0':
2115: ++ep;
2116: break;
2117: default:
2118: ep += 2;
2119: break;
1.70 schwarze 2120: }
1.50 schwarze 2121: }
1.190 schwarze 2122:
2123: /*
2124: * Fully handle known macros when they are structurally
2125: * required or when the conditional evaluated to true.
2126: */
2127:
2128: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.212 schwarze 2129: irc |= t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT) ?
2130: (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs) :
2131: rr ? ROFF_CONT : ROFF_IGN;
2132: return irc;
1.2 schwarze 2133: }
2134:
1.212 schwarze 2135: static int
1.2 schwarze 2136: roff_cond_text(ROFF_ARGS)
2137: {
1.37 schwarze 2138: char *ep;
1.212 schwarze 2139: int endloop, irc, rr;
1.2 schwarze 2140:
1.212 schwarze 2141: irc = ROFF_IGN;
1.2 schwarze 2142: rr = r->last->rule;
1.212 schwarze 2143: endloop = tok != ROFF_while ? ROFF_IGN :
2144: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2145: if (roffnode_cleanscope(r))
2146: irc |= endloop;
1.1 schwarze 2147:
1.215 schwarze 2148: /*
2149: * If `\}' occurs on a text line with neither preceding
2150: * nor following characters, drop the line completely.
2151: */
2152:
1.110 schwarze 2153: ep = buf->buf + pos;
1.215 schwarze 2154: if (strcmp(ep, "\\}") == 0)
2155: rr = 0;
2156:
2157: /*
2158: * The closing delimiter `\}' rewinds the conditional scope
2159: * but is otherwise ignored when interpreting the line.
2160: */
2161:
1.110 schwarze 2162: while ((ep = strchr(ep, '\\')) != NULL) {
1.215 schwarze 2163: switch (ep[1]) {
2164: case '}':
2165: memmove(ep, ep + 2, strlen(ep + 2) + 1);
2166: if (roff_ccond(r, ln, ep - buf->buf))
1.212 schwarze 2167: irc |= endloop;
1.215 schwarze 2168: break;
2169: case '\0':
2170: ++ep;
2171: break;
2172: default:
2173: ep += 2;
2174: break;
1.70 schwarze 2175: }
1.2 schwarze 2176: }
1.212 schwarze 2177: if (rr)
2178: irc |= ROFF_CONT;
2179: return irc;
1.2 schwarze 2180: }
2181:
1.138 schwarze 2182: /* --- handling of numeric and conditional expressions -------------------- */
2183:
1.77 schwarze 2184: /*
2185: * Parse a single signed integer number. Stop at the first non-digit.
2186: * If there is at least one digit, return success and advance the
2187: * parse point, else return failure and let the parse point unchanged.
2188: * Ignore overflows, treat them just like the C language.
2189: */
1.56 schwarze 2190: static int
1.133 schwarze 2191: roff_getnum(const char *v, int *pos, int *res, int flags)
1.56 schwarze 2192: {
1.133 schwarze 2193: int myres, scaled, n, p;
1.79 schwarze 2194:
2195: if (NULL == res)
2196: res = &myres;
1.56 schwarze 2197:
2198: p = *pos;
2199: n = v[p] == '-';
1.133 schwarze 2200: if (n || v[p] == '+')
1.56 schwarze 2201: p++;
2202:
1.133 schwarze 2203: if (flags & ROFFNUM_WHITE)
2204: while (isspace((unsigned char)v[p]))
2205: p++;
2206:
1.56 schwarze 2207: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.77 schwarze 2208: *res = 10 * *res + v[p] - '0';
1.56 schwarze 2209: if (p == *pos + n)
2210: return 0;
2211:
2212: if (n)
2213: *res = -*res;
2214:
1.126 schwarze 2215: /* Each number may be followed by one optional scaling unit. */
2216:
2217: switch (v[p]) {
2218: case 'f':
1.133 schwarze 2219: scaled = *res * 65536;
1.126 schwarze 2220: break;
2221: case 'i':
1.133 schwarze 2222: scaled = *res * 240;
1.126 schwarze 2223: break;
2224: case 'c':
1.133 schwarze 2225: scaled = *res * 240 / 2.54;
1.126 schwarze 2226: break;
2227: case 'v':
2228: case 'P':
1.133 schwarze 2229: scaled = *res * 40;
1.126 schwarze 2230: break;
2231: case 'm':
2232: case 'n':
1.133 schwarze 2233: scaled = *res * 24;
1.126 schwarze 2234: break;
2235: case 'p':
1.133 schwarze 2236: scaled = *res * 10 / 3;
1.126 schwarze 2237: break;
2238: case 'u':
1.133 schwarze 2239: scaled = *res;
1.126 schwarze 2240: break;
2241: case 'M':
1.133 schwarze 2242: scaled = *res * 6 / 25;
1.126 schwarze 2243: break;
2244: default:
1.133 schwarze 2245: scaled = *res;
1.126 schwarze 2246: p--;
2247: break;
2248: }
1.133 schwarze 2249: if (flags & ROFFNUM_SCALE)
2250: *res = scaled;
1.126 schwarze 2251:
2252: *pos = p + 1;
1.149 schwarze 2253: return 1;
1.56 schwarze 2254: }
2255:
1.71 schwarze 2256: /*
2257: * Evaluate a string comparison condition.
2258: * The first character is the delimiter.
2259: * Succeed if the string up to its second occurrence
2260: * matches the string up to its third occurence.
2261: * Advance the cursor after the third occurrence
2262: * or lacking that, to the end of the line.
2263: */
2264: static int
2265: roff_evalstrcond(const char *v, int *pos)
2266: {
2267: const char *s1, *s2, *s3;
2268: int match;
2269:
2270: match = 0;
2271: s1 = v + *pos; /* initial delimiter */
2272: s2 = s1 + 1; /* for scanning the first string */
2273: s3 = strchr(s2, *s1); /* for scanning the second string */
2274:
2275: if (NULL == s3) /* found no middle delimiter */
2276: goto out;
2277:
2278: while ('\0' != *++s3) {
2279: if (*s2 != *s3) { /* mismatch */
2280: s3 = strchr(s3, *s1);
2281: break;
2282: }
2283: if (*s3 == *s1) { /* found the final delimiter */
2284: match = 1;
2285: break;
2286: }
2287: s2++;
2288: }
2289:
2290: out:
2291: if (NULL == s3)
2292: s3 = strchr(s2, '\0');
1.114 schwarze 2293: else if (*s3 != '\0')
1.71 schwarze 2294: s3++;
2295: *pos = s3 - v;
1.149 schwarze 2296: return match;
1.71 schwarze 2297: }
2298:
1.77 schwarze 2299: /*
2300: * Evaluate an optionally negated single character, numerical,
2301: * or string condition.
2302: */
1.71 schwarze 2303: static int
1.143 schwarze 2304: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.5 schwarze 2305: {
1.208 schwarze 2306: const char *start, *end;
2307: char *cp, *name;
2308: size_t sz;
2309: int deftype, len, number, savepos, istrue, wanttrue;
1.5 schwarze 2310:
1.71 schwarze 2311: if ('!' == v[*pos]) {
2312: wanttrue = 0;
2313: (*pos)++;
2314: } else
2315: wanttrue = 1;
2316:
1.5 schwarze 2317: switch (v[*pos]) {
1.112 schwarze 2318: case '\0':
1.149 schwarze 2319: return 0;
1.80 schwarze 2320: case 'n':
2321: case 'o':
1.5 schwarze 2322: (*pos)++;
1.149 schwarze 2323: return wanttrue;
1.80 schwarze 2324: case 'e':
2325: case 't':
1.111 schwarze 2326: case 'v':
1.5 schwarze 2327: (*pos)++;
1.149 schwarze 2328: return !wanttrue;
1.208 schwarze 2329: case 'c':
2330: do {
2331: (*pos)++;
2332: } while (v[*pos] == ' ');
2333:
2334: /*
2335: * Quirk for groff compatibility:
2336: * The horizontal tab is neither available nor unavailable.
2337: */
2338:
2339: if (v[*pos] == '\t') {
2340: (*pos)++;
2341: return 0;
2342: }
2343:
2344: /* Printable ASCII characters are available. */
2345:
2346: if (v[*pos] != '\\') {
2347: (*pos)++;
2348: return wanttrue;
2349: }
2350:
2351: end = v + ++*pos;
2352: switch (mandoc_escape(&end, &start, &len)) {
2353: case ESCAPE_SPECIAL:
2354: istrue = mchars_spec2cp(start, len) != -1;
2355: break;
2356: case ESCAPE_UNICODE:
2357: istrue = 1;
2358: break;
2359: case ESCAPE_NUMBERED:
2360: istrue = mchars_num2char(start, len) != -1;
2361: break;
2362: default:
2363: istrue = !wanttrue;
2364: break;
2365: }
2366: *pos = end - v;
2367: return istrue == wanttrue;
1.182 schwarze 2368: case 'd':
1.143 schwarze 2369: case 'r':
1.182 schwarze 2370: cp = v + *pos + 1;
2371: while (*cp == ' ')
2372: cp++;
2373: name = cp;
2374: sz = roff_getname(r, &cp, ln, cp - v);
1.187 schwarze 2375: if (sz == 0)
2376: istrue = 0;
2377: else if (v[*pos] == 'r')
2378: istrue = roff_hasregn(r, name, sz);
2379: else {
2380: deftype = ROFFDEF_ANY;
2381: roff_getstrn(r, name, sz, &deftype);
2382: istrue = !!deftype;
2383: }
1.143 schwarze 2384: *pos = cp - v;
1.182 schwarze 2385: return istrue == wanttrue;
1.5 schwarze 2386: default:
2387: break;
2388: }
2389:
1.113 schwarze 2390: savepos = *pos;
1.133 schwarze 2391: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.149 schwarze 2392: return (number > 0) == wanttrue;
1.113 schwarze 2393: else if (*pos == savepos)
1.149 schwarze 2394: return roff_evalstrcond(v, pos) == wanttrue;
1.77 schwarze 2395: else
1.149 schwarze 2396: return 0;
1.5 schwarze 2397: }
2398:
1.212 schwarze 2399: static int
1.21 schwarze 2400: roff_line_ignore(ROFF_ARGS)
1.6 schwarze 2401: {
1.30 schwarze 2402:
1.149 schwarze 2403: return ROFF_IGN;
1.21 schwarze 2404: }
2405:
1.212 schwarze 2406: static int
1.123 schwarze 2407: roff_insec(ROFF_ARGS)
2408: {
2409:
1.222 ! schwarze 2410: mandoc_msg(MANDOCERR_REQ_INSEC, ln, ppos, "%s", roff_name[tok]);
1.149 schwarze 2411: return ROFF_IGN;
1.123 schwarze 2412: }
2413:
1.212 schwarze 2414: static int
1.123 schwarze 2415: roff_unsupp(ROFF_ARGS)
2416: {
2417:
1.222 ! schwarze 2418: mandoc_msg(MANDOCERR_REQ_UNSUPP, ln, ppos, "%s", roff_name[tok]);
1.149 schwarze 2419: return ROFF_IGN;
1.123 schwarze 2420: }
2421:
1.212 schwarze 2422: static int
1.2 schwarze 2423: roff_cond(ROFF_ARGS)
2424: {
1.212 schwarze 2425: int irc;
1.46 schwarze 2426:
2427: roffnode_push(r, tok, NULL, ln, ppos);
1.2 schwarze 2428:
1.80 schwarze 2429: /*
1.35 schwarze 2430: * An `.el' has no conditional body: it will consume the value
2431: * of the current rstack entry set in prior `ie' calls or
1.80 schwarze 2432: * defaults to DENY.
1.35 schwarze 2433: *
2434: * If we're not an `el', however, then evaluate the conditional.
2435: */
1.1 schwarze 2436:
1.110 schwarze 2437: r->last->rule = tok == ROFF_el ?
1.80 schwarze 2438: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.110 schwarze 2439: roff_evalcond(r, ln, buf->buf, &pos);
1.2 schwarze 2440:
1.35 schwarze 2441: /*
2442: * An if-else will put the NEGATION of the current evaluated
2443: * conditional into the stack of rules.
2444: */
2445:
1.110 schwarze 2446: if (tok == ROFF_ie) {
1.96 schwarze 2447: if (r->rstackpos + 1 == r->rstacksz) {
2448: r->rstacksz += 16;
2449: r->rstack = mandoc_reallocarray(r->rstack,
2450: r->rstacksz, sizeof(int));
1.35 schwarze 2451: }
1.71 schwarze 2452: r->rstack[++r->rstackpos] = !r->last->rule;
1.2 schwarze 2453: }
1.5 schwarze 2454:
2455: /* If the parent has false as its rule, then so do we. */
2456:
1.71 schwarze 2457: if (r->last->parent && !r->last->parent->rule)
2458: r->last->rule = 0;
1.5 schwarze 2459:
2460: /*
1.46 schwarze 2461: * Determine scope.
2462: * If there is nothing on the line after the conditional,
2463: * not even whitespace, use next-line scope.
1.212 schwarze 2464: * Except that .while does not support next-line scope.
1.5 schwarze 2465: */
1.2 schwarze 2466:
1.212 schwarze 2467: if (buf->buf[pos] == '\0' && tok != ROFF_while) {
1.46 schwarze 2468: r->last->endspan = 2;
2469: goto out;
2470: }
2471:
1.110 schwarze 2472: while (buf->buf[pos] == ' ')
1.46 schwarze 2473: pos++;
2474:
2475: /* An opening brace requests multiline scope. */
1.2 schwarze 2476:
1.110 schwarze 2477: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.2 schwarze 2478: r->last->endspan = -1;
2479: pos += 2;
1.144 schwarze 2480: while (buf->buf[pos] == ' ')
2481: pos++;
1.46 schwarze 2482: goto out;
1.80 schwarze 2483: }
1.2 schwarze 2484:
2485: /*
1.46 schwarze 2486: * Anything else following the conditional causes
2487: * single-line scope. Warn if the scope contains
2488: * nothing but trailing whitespace.
1.2 schwarze 2489: */
2490:
1.110 schwarze 2491: if (buf->buf[pos] == '\0')
1.222 ! schwarze 2492: mandoc_msg(MANDOCERR_COND_EMPTY,
! 2493: ln, ppos, "%s", roff_name[tok]);
1.2 schwarze 2494:
1.46 schwarze 2495: r->last->endspan = 1;
1.1 schwarze 2496:
1.46 schwarze 2497: out:
1.2 schwarze 2498: *offs = pos;
1.212 schwarze 2499: irc = ROFF_RERUN;
2500: if (tok == ROFF_while)
2501: irc |= ROFF_WHILE;
2502: return irc;
1.1 schwarze 2503: }
2504:
1.212 schwarze 2505: static int
1.7 schwarze 2506: roff_ds(ROFF_ARGS)
2507: {
1.85 schwarze 2508: char *string;
2509: const char *name;
2510: size_t namesz;
1.10 schwarze 2511:
1.123 schwarze 2512: /* Ignore groff compatibility mode for now. */
2513:
2514: if (tok == ROFF_ds1)
2515: tok = ROFF_ds;
2516: else if (tok == ROFF_as1)
2517: tok = ROFF_as;
2518:
1.10 schwarze 2519: /*
1.85 schwarze 2520: * The first word is the name of the string.
2521: * If it is empty or terminated by an escape sequence,
2522: * abort the `ds' request without defining anything.
1.10 schwarze 2523: */
1.7 schwarze 2524:
1.110 schwarze 2525: name = string = buf->buf + pos;
2526: if (*name == '\0')
1.149 schwarze 2527: return ROFF_IGN;
1.7 schwarze 2528:
1.85 schwarze 2529: namesz = roff_getname(r, &string, ln, pos);
1.110 schwarze 2530: if (name[namesz] == '\\')
1.149 schwarze 2531: return ROFF_IGN;
1.85 schwarze 2532:
2533: /* Read past the initial double-quote, if any. */
1.110 schwarze 2534: if (*string == '"')
1.7 schwarze 2535: string++;
2536:
1.10 schwarze 2537: /* The rest is the value. */
1.85 schwarze 2538: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2539: ROFF_as == tok);
1.183 schwarze 2540: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.149 schwarze 2541: return ROFF_IGN;
1.7 schwarze 2542: }
2543:
1.77 schwarze 2544: /*
2545: * Parse a single operator, one or two characters long.
2546: * If the operator is recognized, return success and advance the
2547: * parse point, else return failure and let the parse point unchanged.
2548: */
2549: static int
2550: roff_getop(const char *v, int *pos, char *res)
2551: {
2552:
2553: *res = v[*pos];
2554:
2555: switch (*res) {
1.80 schwarze 2556: case '+':
2557: case '-':
2558: case '*':
2559: case '/':
2560: case '%':
2561: case '&':
2562: case ':':
1.77 schwarze 2563: break;
2564: case '<':
2565: switch (v[*pos + 1]) {
1.80 schwarze 2566: case '=':
1.77 schwarze 2567: *res = 'l';
2568: (*pos)++;
2569: break;
1.80 schwarze 2570: case '>':
1.77 schwarze 2571: *res = '!';
2572: (*pos)++;
2573: break;
1.80 schwarze 2574: case '?':
1.77 schwarze 2575: *res = 'i';
2576: (*pos)++;
2577: break;
2578: default:
2579: break;
2580: }
2581: break;
2582: case '>':
2583: switch (v[*pos + 1]) {
1.80 schwarze 2584: case '=':
1.77 schwarze 2585: *res = 'g';
2586: (*pos)++;
2587: break;
1.80 schwarze 2588: case '?':
1.77 schwarze 2589: *res = 'a';
2590: (*pos)++;
2591: break;
2592: default:
2593: break;
2594: }
2595: break;
2596: case '=':
2597: if ('=' == v[*pos + 1])
2598: (*pos)++;
2599: break;
2600: default:
1.149 schwarze 2601: return 0;
1.77 schwarze 2602: }
2603: (*pos)++;
2604:
1.149 schwarze 2605: return *res;
1.77 schwarze 2606: }
2607:
2608: /*
2609: * Evaluate either a parenthesized numeric expression
2610: * or a single signed integer number.
2611: */
2612: static int
1.106 schwarze 2613: roff_evalpar(struct roff *r, int ln,
1.133 schwarze 2614: const char *v, int *pos, int *res, int flags)
1.77 schwarze 2615: {
2616:
2617: if ('(' != v[*pos])
1.149 schwarze 2618: return roff_getnum(v, pos, res, flags);
1.77 schwarze 2619:
2620: (*pos)++;
1.133 schwarze 2621: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.149 schwarze 2622: return 0;
1.77 schwarze 2623:
1.79 schwarze 2624: /*
2625: * Omission of the closing parenthesis
2626: * is an error in validation mode,
2627: * but ignored in evaluation mode.
2628: */
2629:
1.77 schwarze 2630: if (')' == v[*pos])
2631: (*pos)++;
1.79 schwarze 2632: else if (NULL == res)
1.149 schwarze 2633: return 0;
1.77 schwarze 2634:
1.149 schwarze 2635: return 1;
1.77 schwarze 2636: }
2637:
2638: /*
2639: * Evaluate a complete numeric expression.
2640: * Proceed left to right, there is no concept of precedence.
2641: */
2642: static int
1.106 schwarze 2643: roff_evalnum(struct roff *r, int ln, const char *v,
1.133 schwarze 2644: int *pos, int *res, int flags)
1.77 schwarze 2645: {
2646: int mypos, operand2;
2647: char operator;
2648:
2649: if (NULL == pos) {
2650: mypos = 0;
2651: pos = &mypos;
2652: }
2653:
1.133 schwarze 2654: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2655: while (isspace((unsigned char)v[*pos]))
2656: (*pos)++;
2657:
1.133 schwarze 2658: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.149 schwarze 2659: return 0;
1.77 schwarze 2660:
2661: while (1) {
1.133 schwarze 2662: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2663: while (isspace((unsigned char)v[*pos]))
2664: (*pos)++;
2665:
2666: if ( ! roff_getop(v, pos, &operator))
2667: break;
2668:
1.133 schwarze 2669: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2670: while (isspace((unsigned char)v[*pos]))
2671: (*pos)++;
2672:
1.133 schwarze 2673: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.149 schwarze 2674: return 0;
1.77 schwarze 2675:
1.133 schwarze 2676: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2677: while (isspace((unsigned char)v[*pos]))
2678: (*pos)++;
1.79 schwarze 2679:
2680: if (NULL == res)
2681: continue;
1.77 schwarze 2682:
2683: switch (operator) {
1.80 schwarze 2684: case '+':
1.77 schwarze 2685: *res += operand2;
2686: break;
1.80 schwarze 2687: case '-':
1.77 schwarze 2688: *res -= operand2;
2689: break;
1.80 schwarze 2690: case '*':
1.77 schwarze 2691: *res *= operand2;
2692: break;
1.80 schwarze 2693: case '/':
1.116 schwarze 2694: if (operand2 == 0) {
1.106 schwarze 2695: mandoc_msg(MANDOCERR_DIVZERO,
1.222 ! schwarze 2696: ln, *pos, "%s", v);
1.106 schwarze 2697: *res = 0;
2698: break;
2699: }
1.77 schwarze 2700: *res /= operand2;
2701: break;
1.80 schwarze 2702: case '%':
1.116 schwarze 2703: if (operand2 == 0) {
2704: mandoc_msg(MANDOCERR_DIVZERO,
1.222 ! schwarze 2705: ln, *pos, "%s", v);
1.116 schwarze 2706: *res = 0;
2707: break;
2708: }
1.77 schwarze 2709: *res %= operand2;
2710: break;
1.80 schwarze 2711: case '<':
1.77 schwarze 2712: *res = *res < operand2;
2713: break;
1.80 schwarze 2714: case '>':
1.77 schwarze 2715: *res = *res > operand2;
2716: break;
1.80 schwarze 2717: case 'l':
1.77 schwarze 2718: *res = *res <= operand2;
2719: break;
1.80 schwarze 2720: case 'g':
1.77 schwarze 2721: *res = *res >= operand2;
2722: break;
1.80 schwarze 2723: case '=':
1.77 schwarze 2724: *res = *res == operand2;
2725: break;
1.80 schwarze 2726: case '!':
1.77 schwarze 2727: *res = *res != operand2;
2728: break;
1.80 schwarze 2729: case '&':
1.77 schwarze 2730: *res = *res && operand2;
2731: break;
1.80 schwarze 2732: case ':':
1.77 schwarze 2733: *res = *res || operand2;
2734: break;
1.80 schwarze 2735: case 'i':
1.77 schwarze 2736: if (operand2 < *res)
2737: *res = operand2;
2738: break;
1.80 schwarze 2739: case 'a':
1.77 schwarze 2740: if (operand2 > *res)
2741: *res = operand2;
2742: break;
2743: default:
2744: abort();
2745: }
2746: }
1.149 schwarze 2747: return 1;
1.77 schwarze 2748: }
2749:
1.138 schwarze 2750: /* --- register management ------------------------------------------------ */
2751:
1.52 schwarze 2752: void
1.60 schwarze 2753: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.41 schwarze 2754: {
1.199 schwarze 2755: roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
1.198 schwarze 2756: }
2757:
2758: static void
2759: roff_setregn(struct roff *r, const char *name, size_t len,
1.199 schwarze 2760: int val, char sign, int step)
1.198 schwarze 2761: {
1.52 schwarze 2762: struct roffreg *reg;
2763:
2764: /* Search for an existing register with the same name. */
2765: reg = r->regtab;
2766:
1.198 schwarze 2767: while (reg != NULL && (reg->key.sz != len ||
2768: strncmp(reg->key.p, name, len) != 0))
1.52 schwarze 2769: reg = reg->next;
1.41 schwarze 2770:
1.52 schwarze 2771: if (NULL == reg) {
2772: /* Create a new register. */
2773: reg = mandoc_malloc(sizeof(struct roffreg));
1.198 schwarze 2774: reg->key.p = mandoc_strndup(name, len);
2775: reg->key.sz = len;
1.60 schwarze 2776: reg->val = 0;
1.199 schwarze 2777: reg->step = 0;
1.52 schwarze 2778: reg->next = r->regtab;
2779: r->regtab = reg;
2780: }
2781:
1.60 schwarze 2782: if ('+' == sign)
2783: reg->val += val;
2784: else if ('-' == sign)
2785: reg->val -= val;
2786: else
2787: reg->val = val;
1.199 schwarze 2788: if (step != INT_MIN)
2789: reg->step = step;
1.41 schwarze 2790: }
2791:
1.65 schwarze 2792: /*
2793: * Handle some predefined read-only number registers.
2794: * For now, return -1 if the requested register is not predefined;
2795: * in case a predefined read-only register having the value -1
2796: * were to turn up, another special value would have to be chosen.
2797: */
2798: static int
1.145 schwarze 2799: roff_getregro(const struct roff *r, const char *name)
1.65 schwarze 2800: {
2801:
2802: switch (*name) {
1.145 schwarze 2803: case '$': /* Number of arguments of the last macro evaluated. */
1.211 schwarze 2804: return r->mstackpos < 0 ? 0 : r->mstack[r->mstackpos].argc;
1.80 schwarze 2805: case 'A': /* ASCII approximation mode is always off. */
1.149 schwarze 2806: return 0;
1.80 schwarze 2807: case 'g': /* Groff compatibility mode is always on. */
1.149 schwarze 2808: return 1;
1.80 schwarze 2809: case 'H': /* Fixed horizontal resolution. */
1.149 schwarze 2810: return 24;
1.80 schwarze 2811: case 'j': /* Always adjust left margin only. */
1.149 schwarze 2812: return 0;
1.80 schwarze 2813: case 'T': /* Some output device is always defined. */
1.149 schwarze 2814: return 1;
1.80 schwarze 2815: case 'V': /* Fixed vertical resolution. */
1.149 schwarze 2816: return 40;
1.65 schwarze 2817: default:
1.149 schwarze 2818: return -1;
1.65 schwarze 2819: }
2820: }
2821:
1.53 schwarze 2822: int
1.198 schwarze 2823: roff_getreg(struct roff *r, const char *name)
1.41 schwarze 2824: {
1.199 schwarze 2825: return roff_getregn(r, name, strlen(name), '\0');
1.53 schwarze 2826: }
2827:
2828: static int
1.199 schwarze 2829: roff_getregn(struct roff *r, const char *name, size_t len, char sign)
1.53 schwarze 2830: {
2831: struct roffreg *reg;
1.65 schwarze 2832: int val;
2833:
2834: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2835: val = roff_getregro(r, name + 1);
1.65 schwarze 2836: if (-1 != val)
1.149 schwarze 2837: return val;
1.65 schwarze 2838: }
1.53 schwarze 2839:
1.199 schwarze 2840: for (reg = r->regtab; reg; reg = reg->next) {
1.53 schwarze 2841: if (len == reg->key.sz &&
1.199 schwarze 2842: 0 == strncmp(name, reg->key.p, len)) {
2843: switch (sign) {
2844: case '+':
2845: reg->val += reg->step;
2846: break;
2847: case '-':
2848: reg->val -= reg->step;
2849: break;
2850: default:
2851: break;
2852: }
1.149 schwarze 2853: return reg->val;
1.199 schwarze 2854: }
2855: }
1.143 schwarze 2856:
1.199 schwarze 2857: roff_setregn(r, name, len, 0, '\0', INT_MIN);
1.149 schwarze 2858: return 0;
1.143 schwarze 2859: }
2860:
2861: static int
2862: roff_hasregn(const struct roff *r, const char *name, size_t len)
2863: {
2864: struct roffreg *reg;
2865: int val;
2866:
2867: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2868: val = roff_getregro(r, name + 1);
1.143 schwarze 2869: if (-1 != val)
1.149 schwarze 2870: return 1;
1.143 schwarze 2871: }
2872:
2873: for (reg = r->regtab; reg; reg = reg->next)
2874: if (len == reg->key.sz &&
2875: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 2876: return 1;
1.41 schwarze 2877:
1.149 schwarze 2878: return 0;
1.41 schwarze 2879: }
2880:
1.52 schwarze 2881: static void
2882: roff_freereg(struct roffreg *reg)
1.41 schwarze 2883: {
1.52 schwarze 2884: struct roffreg *old_reg;
1.41 schwarze 2885:
1.52 schwarze 2886: while (NULL != reg) {
2887: free(reg->key.p);
2888: old_reg = reg;
2889: reg = reg->next;
2890: free(old_reg);
2891: }
1.41 schwarze 2892: }
1.7 schwarze 2893:
1.212 schwarze 2894: static int
1.6 schwarze 2895: roff_nr(ROFF_ARGS)
1.1 schwarze 2896: {
1.199 schwarze 2897: char *key, *val, *step;
1.85 schwarze 2898: size_t keysz;
1.199 schwarze 2899: int iv, is, len;
1.60 schwarze 2900: char sign;
1.6 schwarze 2901:
1.110 schwarze 2902: key = val = buf->buf + pos;
2903: if (*key == '\0')
1.149 schwarze 2904: return ROFF_IGN;
1.85 schwarze 2905:
2906: keysz = roff_getname(r, &val, ln, pos);
1.110 schwarze 2907: if (key[keysz] == '\\')
1.149 schwarze 2908: return ROFF_IGN;
1.6 schwarze 2909:
1.60 schwarze 2910: sign = *val;
1.110 schwarze 2911: if (sign == '+' || sign == '-')
1.60 schwarze 2912: val++;
2913:
1.199 schwarze 2914: len = 0;
2915: if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
2916: return ROFF_IGN;
2917:
2918: step = val + len;
2919: while (isspace((unsigned char)*step))
2920: step++;
2921: if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)
2922: is = INT_MIN;
1.1 schwarze 2923:
1.199 schwarze 2924: roff_setregn(r, key, keysz, iv, sign, is);
1.149 schwarze 2925: return ROFF_IGN;
1.76 schwarze 2926: }
2927:
1.212 schwarze 2928: static int
1.76 schwarze 2929: roff_rr(ROFF_ARGS)
2930: {
2931: struct roffreg *reg, **prev;
1.85 schwarze 2932: char *name, *cp;
2933: size_t namesz;
1.76 schwarze 2934:
1.110 schwarze 2935: name = cp = buf->buf + pos;
2936: if (*name == '\0')
1.149 schwarze 2937: return ROFF_IGN;
1.85 schwarze 2938: namesz = roff_getname(r, &cp, ln, pos);
2939: name[namesz] = '\0';
1.76 schwarze 2940:
2941: prev = &r->regtab;
2942: while (1) {
2943: reg = *prev;
1.110 schwarze 2944: if (reg == NULL || !strcmp(name, reg->key.p))
1.76 schwarze 2945: break;
2946: prev = ®->next;
2947: }
1.110 schwarze 2948: if (reg != NULL) {
1.76 schwarze 2949: *prev = reg->next;
2950: free(reg->key.p);
2951: free(reg);
2952: }
1.149 schwarze 2953: return ROFF_IGN;
1.29 schwarze 2954: }
2955:
1.138 schwarze 2956: /* --- handler functions for roff requests -------------------------------- */
2957:
1.212 schwarze 2958: static int
1.29 schwarze 2959: roff_rm(ROFF_ARGS)
2960: {
2961: const char *name;
2962: char *cp;
1.85 schwarze 2963: size_t namesz;
1.29 schwarze 2964:
1.110 schwarze 2965: cp = buf->buf + pos;
2966: while (*cp != '\0') {
1.85 schwarze 2967: name = cp;
1.110 schwarze 2968: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.85 schwarze 2969: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.183 schwarze 2970: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.110 schwarze 2971: if (name[namesz] == '\\')
1.85 schwarze 2972: break;
1.29 schwarze 2973: }
1.149 schwarze 2974: return ROFF_IGN;
1.51 schwarze 2975: }
2976:
1.212 schwarze 2977: static int
1.51 schwarze 2978: roff_it(ROFF_ARGS)
2979: {
2980: int iv;
2981:
2982: /* Parse the number of lines. */
1.133 schwarze 2983:
2984: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.222 ! schwarze 2985: mandoc_msg(MANDOCERR_IT_NONUM,
! 2986: ln, ppos, "%s", buf->buf + 1);
1.149 schwarze 2987: return ROFF_IGN;
1.51 schwarze 2988: }
2989:
1.134 schwarze 2990: while (isspace((unsigned char)buf->buf[pos]))
2991: pos++;
2992:
2993: /*
2994: * Arm the input line trap.
2995: * Special-casing "an-trap" is an ugly workaround to cope
2996: * with DocBook stupidly fiddling with man(7) internals.
2997: */
1.133 schwarze 2998:
1.51 schwarze 2999: roffit_lines = iv;
1.134 schwarze 3000: roffit_macro = mandoc_strdup(iv != 1 ||
3001: strcmp(buf->buf + pos, "an-trap") ?
3002: buf->buf + pos : "br");
1.149 schwarze 3003: return ROFF_IGN;
1.47 schwarze 3004: }
3005:
1.212 schwarze 3006: static int
1.47 schwarze 3007: roff_Dd(ROFF_ARGS)
3008: {
1.187 schwarze 3009: int mask;
3010: enum roff_tok t, te;
1.99 schwarze 3011:
1.187 schwarze 3012: switch (tok) {
3013: case ROFF_Dd:
3014: tok = MDOC_Dd;
3015: te = MDOC_MAX;
3016: if (r->format == 0)
3017: r->format = MPARSE_MDOC;
3018: mask = MPARSE_MDOC | MPARSE_QUICK;
3019: break;
3020: case ROFF_TH:
3021: tok = MAN_TH;
3022: te = MAN_MAX;
3023: if (r->format == 0)
3024: r->format = MPARSE_MAN;
3025: mask = MPARSE_QUICK;
3026: break;
3027: default:
3028: abort();
3029: }
3030: if ((r->options & mask) == 0)
3031: for (t = tok; t < te; t++)
3032: roff_setstr(r, roff_name[t], NULL, 0);
1.149 schwarze 3033: return ROFF_CONT;
1.14 schwarze 3034: }
3035:
1.212 schwarze 3036: static int
1.27 schwarze 3037: roff_TE(ROFF_ARGS)
3038: {
1.193 schwarze 3039: if (r->tbl == NULL) {
1.222 ! schwarze 3040: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "TE");
1.193 schwarze 3041: return ROFF_IGN;
3042: }
1.218 schwarze 3043: if (tbl_end(r->tbl, 0) == 0) {
1.193 schwarze 3044: r->tbl = NULL;
1.130 schwarze 3045: free(buf->buf);
3046: buf->buf = mandoc_strdup(".sp");
3047: buf->sz = 4;
1.201 schwarze 3048: *offs = 0;
1.149 schwarze 3049: return ROFF_REPARSE;
1.130 schwarze 3050: }
1.193 schwarze 3051: r->tbl = NULL;
1.149 schwarze 3052: return ROFF_IGN;
1.27 schwarze 3053: }
3054:
1.212 schwarze 3055: static int
1.27 schwarze 3056: roff_T_(ROFF_ARGS)
3057: {
3058:
3059: if (NULL == r->tbl)
1.222 ! schwarze 3060: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "T&");
1.27 schwarze 3061: else
1.168 schwarze 3062: tbl_restart(ln, ppos, r->tbl);
1.27 schwarze 3063:
1.149 schwarze 3064: return ROFF_IGN;
1.27 schwarze 3065: }
3066:
1.102 schwarze 3067: /*
3068: * Handle in-line equation delimiters.
3069: */
1.212 schwarze 3070: static int
1.110 schwarze 3071: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.41 schwarze 3072: {
1.105 schwarze 3073: char *cp1, *cp2;
3074: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.41 schwarze 3075:
1.102 schwarze 3076: /*
3077: * Outside equations, look for an opening delimiter.
3078: * If we are inside an equation, we already know it is
3079: * in-line, or this function wouldn't have been called;
3080: * so look for a closing delimiter.
3081: */
3082:
1.110 schwarze 3083: cp1 = buf->buf + pos;
1.102 schwarze 3084: cp2 = strchr(cp1, r->eqn == NULL ?
3085: r->last_eqn->odelim : r->last_eqn->cdelim);
3086: if (cp2 == NULL)
1.149 schwarze 3087: return ROFF_CONT;
1.102 schwarze 3088:
1.105 schwarze 3089: *cp2++ = '\0';
3090: bef_pr = bef_nl = aft_nl = aft_pr = "";
3091:
3092: /* Handle preceding text, protecting whitespace. */
3093:
1.110 schwarze 3094: if (*buf->buf != '\0') {
1.105 schwarze 3095: if (r->eqn == NULL)
3096: bef_pr = "\\&";
3097: bef_nl = "\n";
3098: }
3099:
3100: /*
3101: * Prepare replacing the delimiter with an equation macro
3102: * and drop leading white space from the equation.
3103: */
1.102 schwarze 3104:
1.105 schwarze 3105: if (r->eqn == NULL) {
3106: while (*cp2 == ' ')
3107: cp2++;
3108: mac = ".EQ";
3109: } else
3110: mac = ".EN";
3111:
3112: /* Handle following text, protecting whitespace. */
3113:
3114: if (*cp2 != '\0') {
3115: aft_nl = "\n";
3116: if (r->eqn != NULL)
3117: aft_pr = "\\&";
3118: }
3119:
3120: /* Do the actual replacement. */
3121:
1.110 schwarze 3122: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.105 schwarze 3123: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.110 schwarze 3124: free(buf->buf);
3125: buf->buf = cp1;
1.102 schwarze 3126:
3127: /* Toggle the in-line state of the eqn subsystem. */
3128:
3129: r->eqn_inline = r->eqn == NULL;
1.149 schwarze 3130: return ROFF_REPARSE;
1.41 schwarze 3131: }
3132:
1.212 schwarze 3133: static int
1.107 schwarze 3134: roff_EQ(ROFF_ARGS)
1.32 schwarze 3135: {
1.191 schwarze 3136: struct roff_node *n;
3137:
1.194 schwarze 3138: if (r->man->macroset == MACROSET_MAN)
3139: man_breakscope(r->man, ROFF_EQ);
1.191 schwarze 3140: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
3141: if (ln > r->man->last->line)
3142: n->flags |= NODE_LINE;
1.220 schwarze 3143: n->eqn = eqn_box_new();
1.191 schwarze 3144: roff_node_append(r->man, n);
3145: r->man->next = ROFF_NEXT_SIBLING;
1.32 schwarze 3146:
1.110 schwarze 3147: assert(r->eqn == NULL);
1.191 schwarze 3148: if (r->last_eqn == NULL)
3149: r->last_eqn = eqn_alloc(r->parse);
3150: else
3151: eqn_reset(r->last_eqn);
3152: r->eqn = r->last_eqn;
3153: r->eqn->node = n;
1.41 schwarze 3154:
1.110 schwarze 3155: if (buf->buf[pos] != '\0')
1.222 ! schwarze 3156: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.110 schwarze 3157: ".EQ %s", buf->buf + pos);
1.41 schwarze 3158:
1.149 schwarze 3159: return ROFF_IGN;
1.32 schwarze 3160: }
3161:
1.212 schwarze 3162: static int
1.32 schwarze 3163: roff_EN(ROFF_ARGS)
3164: {
1.191 schwarze 3165: if (r->eqn != NULL) {
3166: eqn_parse(r->eqn);
3167: r->eqn = NULL;
3168: } else
1.222 ! schwarze 3169: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "EN");
1.191 schwarze 3170: if (buf->buf[pos] != '\0')
1.222 ! schwarze 3171: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.191 schwarze 3172: "EN %s", buf->buf + pos);
1.149 schwarze 3173: return ROFF_IGN;
1.32 schwarze 3174: }
3175:
1.212 schwarze 3176: static int
1.27 schwarze 3177: roff_TS(ROFF_ARGS)
3178: {
1.193 schwarze 3179: if (r->tbl != NULL) {
1.222 ! schwarze 3180: mandoc_msg(MANDOCERR_BLK_BROKEN, ln, ppos, "TS breaks TS");
1.218 schwarze 3181: tbl_end(r->tbl, 0);
1.27 schwarze 3182: }
1.218 schwarze 3183: r->tbl = tbl_alloc(ppos, ln, r->parse, r->last_tbl);
3184: if (r->last_tbl == NULL)
1.193 schwarze 3185: r->first_tbl = r->tbl;
3186: r->last_tbl = r->tbl;
1.169 schwarze 3187: return ROFF_IGN;
3188: }
3189:
1.212 schwarze 3190: static int
1.169 schwarze 3191: roff_onearg(ROFF_ARGS)
3192: {
3193: struct roff_node *n;
3194: char *cp;
1.177 schwarze 3195: int npos;
1.169 schwarze 3196:
1.174 schwarze 3197: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.192 schwarze 3198: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
3199: tok == ROFF_ti))
1.174 schwarze 3200: man_breakscope(r->man, tok);
3201:
1.181 schwarze 3202: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.177 schwarze 3203: r->man->last = roffce_node;
3204: r->man->next = ROFF_NEXT_SIBLING;
3205: }
3206:
1.169 schwarze 3207: roff_elem_alloc(r->man, ln, ppos, tok);
3208: n = r->man->last;
3209:
3210: cp = buf->buf + pos;
3211: if (*cp != '\0') {
3212: while (*cp != '\0' && *cp != ' ')
3213: cp++;
3214: while (*cp == ' ')
3215: *cp++ = '\0';
3216: if (*cp != '\0')
1.222 ! schwarze 3217: mandoc_msg(MANDOCERR_ARG_EXCESS,
! 3218: ln, (int)(cp - buf->buf),
1.169 schwarze 3219: "%s ... %s", roff_name[tok], cp);
3220: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.172 schwarze 3221: }
3222:
1.181 schwarze 3223: if (tok == ROFF_ce || tok == ROFF_rj) {
3224: if (r->man->last->type == ROFFT_ELEM) {
1.177 schwarze 3225: roff_word_alloc(r->man, ln, pos, "1");
3226: r->man->last->flags |= NODE_NOSRC;
3227: }
3228: npos = 0;
3229: if (roff_evalnum(r, ln, r->man->last->string, &npos,
3230: &roffce_lines, 0) == 0) {
1.222 ! schwarze 3231: mandoc_msg(MANDOCERR_CE_NONUM,
! 3232: ln, pos, "ce %s", buf->buf + pos);
1.177 schwarze 3233: roffce_lines = 1;
3234: }
3235: if (roffce_lines < 1) {
3236: r->man->last = r->man->last->parent;
3237: roffce_node = NULL;
3238: roffce_lines = 0;
3239: } else
3240: roffce_node = r->man->last->parent;
3241: } else {
3242: n->flags |= NODE_VALID | NODE_ENDED;
3243: r->man->last = n;
3244: }
3245: n->flags |= NODE_LINE;
1.172 schwarze 3246: r->man->next = ROFF_NEXT_SIBLING;
3247: return ROFF_IGN;
3248: }
3249:
1.212 schwarze 3250: static int
1.172 schwarze 3251: roff_manyarg(ROFF_ARGS)
3252: {
3253: struct roff_node *n;
3254: char *sp, *ep;
3255:
3256: roff_elem_alloc(r->man, ln, ppos, tok);
3257: n = r->man->last;
3258:
3259: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3260: while (*ep != '\0' && *ep != ' ')
3261: ep++;
3262: while (*ep == ' ')
3263: *ep++ = '\0';
3264: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.169 schwarze 3265: }
3266:
3267: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3268: r->man->last = n;
3269: r->man->next = ROFF_NEXT_SIBLING;
1.149 schwarze 3270: return ROFF_IGN;
1.123 schwarze 3271: }
3272:
1.212 schwarze 3273: static int
1.183 schwarze 3274: roff_als(ROFF_ARGS)
3275: {
3276: char *oldn, *newn, *end, *value;
3277: size_t oldsz, newsz, valsz;
3278:
3279: newn = oldn = buf->buf + pos;
3280: if (*newn == '\0')
3281: return ROFF_IGN;
3282:
3283: newsz = roff_getname(r, &oldn, ln, pos);
3284: if (newn[newsz] == '\\' || *oldn == '\0')
3285: return ROFF_IGN;
3286:
3287: end = oldn;
3288: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3289: if (oldsz == 0)
3290: return ROFF_IGN;
3291:
1.210 schwarze 3292: valsz = mandoc_asprintf(&value, ".%.*s \\$@\\\"\n",
1.187 schwarze 3293: (int)oldsz, oldn);
1.183 schwarze 3294: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3295: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3296: free(value);
3297: return ROFF_IGN;
3298: }
3299:
1.212 schwarze 3300: static int
1.168 schwarze 3301: roff_br(ROFF_ARGS)
1.123 schwarze 3302: {
1.174 schwarze 3303: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3304: man_breakscope(r->man, ROFF_br);
1.168 schwarze 3305: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
3306: if (buf->buf[pos] != '\0')
1.222 ! schwarze 3307: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.168 schwarze 3308: "%s %s", roff_name[tok], buf->buf + pos);
3309: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3310: r->man->next = ROFF_NEXT_SIBLING;
3311: return ROFF_IGN;
1.27 schwarze 3312: }
3313:
1.212 schwarze 3314: static int
1.48 schwarze 3315: roff_cc(ROFF_ARGS)
3316: {
3317: const char *p;
3318:
1.110 schwarze 3319: p = buf->buf + pos;
1.48 schwarze 3320:
1.110 schwarze 3321: if (*p == '\0' || (r->control = *p++) == '.')
1.175 schwarze 3322: r->control = '\0';
1.48 schwarze 3323:
1.110 schwarze 3324: if (*p != '\0')
1.222 ! schwarze 3325: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.132 schwarze 3326: ln, p - buf->buf, "cc ... %s", p);
1.48 schwarze 3327:
1.213 schwarze 3328: return ROFF_IGN;
3329: }
3330:
3331: static int
3332: roff_char(ROFF_ARGS)
3333: {
3334: const char *p, *kp, *vp;
3335: size_t ksz, vsz;
3336: int font;
3337:
3338: /* Parse the character to be replaced. */
3339:
3340: kp = buf->buf + pos;
3341: p = kp + 1;
3342: if (*kp == '\0' || (*kp == '\\' &&
3343: mandoc_escape(&p, NULL, NULL) != ESCAPE_SPECIAL) ||
3344: (*p != ' ' && *p != '\0')) {
1.222 ! schwarze 3345: mandoc_msg(MANDOCERR_CHAR_ARG, ln, pos, "char %s", kp);
1.213 schwarze 3346: return ROFF_IGN;
3347: }
3348: ksz = p - kp;
3349: while (*p == ' ')
3350: p++;
3351:
3352: /*
3353: * If the replacement string contains a font escape sequence,
3354: * we have to restore the font at the end.
3355: */
3356:
3357: vp = p;
3358: vsz = strlen(p);
3359: font = 0;
3360: while (*p != '\0') {
3361: if (*p++ != '\\')
3362: continue;
3363: switch (mandoc_escape(&p, NULL, NULL)) {
3364: case ESCAPE_FONT:
3365: case ESCAPE_FONTROMAN:
3366: case ESCAPE_FONTITALIC:
3367: case ESCAPE_FONTBOLD:
3368: case ESCAPE_FONTBI:
1.214 schwarze 3369: case ESCAPE_FONTCW:
1.213 schwarze 3370: case ESCAPE_FONTPREV:
3371: font++;
3372: break;
3373: default:
3374: break;
3375: }
3376: }
3377: if (font > 1)
1.222 ! schwarze 3378: mandoc_msg(MANDOCERR_CHAR_FONT,
! 3379: ln, (int)(vp - buf->buf), "%s", vp);
1.213 schwarze 3380:
3381: /*
3382: * Approximate the effect of .char using the .tr tables.
3383: * XXX In groff, .char and .tr interact differently.
3384: */
3385:
3386: if (ksz == 1) {
3387: if (r->xtab == NULL)
3388: r->xtab = mandoc_calloc(128, sizeof(*r->xtab));
3389: assert((unsigned int)*kp < 128);
3390: free(r->xtab[(int)*kp].p);
3391: r->xtab[(int)*kp].sz = mandoc_asprintf(&r->xtab[(int)*kp].p,
3392: "%s%s", vp, font ? "\fP" : "");
3393: } else {
3394: roff_setstrn(&r->xmbtab, kp, ksz, vp, vsz, 0);
3395: if (font)
3396: roff_setstrn(&r->xmbtab, kp, ksz, "\\fP", 3, 1);
3397: }
1.149 schwarze 3398: return ROFF_IGN;
1.48 schwarze 3399: }
3400:
1.212 schwarze 3401: static int
1.175 schwarze 3402: roff_ec(ROFF_ARGS)
3403: {
3404: const char *p;
3405:
3406: p = buf->buf + pos;
3407: if (*p == '\0')
3408: r->escape = '\\';
3409: else {
3410: r->escape = *p;
3411: if (*++p != '\0')
1.222 ! schwarze 3412: mandoc_msg(MANDOCERR_ARG_EXCESS, ln,
! 3413: (int)(p - buf->buf), "ec ... %s", p);
1.175 schwarze 3414: }
3415: return ROFF_IGN;
3416: }
3417:
1.212 schwarze 3418: static int
1.175 schwarze 3419: roff_eo(ROFF_ARGS)
3420: {
3421: r->escape = '\0';
3422: if (buf->buf[pos] != '\0')
1.222 ! schwarze 3423: mandoc_msg(MANDOCERR_ARG_SKIP,
1.175 schwarze 3424: ln, pos, "eo %s", buf->buf + pos);
3425: return ROFF_IGN;
1.202 schwarze 3426: }
3427:
1.212 schwarze 3428: static int
1.202 schwarze 3429: roff_nop(ROFF_ARGS)
3430: {
3431: while (buf->buf[pos] == ' ')
3432: pos++;
3433: *offs = pos;
3434: return ROFF_RERUN;
1.175 schwarze 3435: }
3436:
1.212 schwarze 3437: static int
1.42 schwarze 3438: roff_tr(ROFF_ARGS)
3439: {
3440: const char *p, *first, *second;
3441: size_t fsz, ssz;
3442: enum mandoc_esc esc;
3443:
1.110 schwarze 3444: p = buf->buf + pos;
1.42 schwarze 3445:
1.110 schwarze 3446: if (*p == '\0') {
1.222 ! schwarze 3447: mandoc_msg(MANDOCERR_REQ_EMPTY, ln, ppos, "tr");
1.149 schwarze 3448: return ROFF_IGN;
1.42 schwarze 3449: }
3450:
1.110 schwarze 3451: while (*p != '\0') {
1.42 schwarze 3452: fsz = ssz = 1;
3453:
3454: first = p++;
1.110 schwarze 3455: if (*first == '\\') {
1.42 schwarze 3456: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3457: if (esc == ESCAPE_ERROR) {
1.222 ! schwarze 3458: mandoc_msg(MANDOCERR_ESC_BAD, ln,
! 3459: (int)(p - buf->buf), "%s", first);
1.149 schwarze 3460: return ROFF_IGN;
1.42 schwarze 3461: }
3462: fsz = (size_t)(p - first);
3463: }
3464:
3465: second = p++;
1.110 schwarze 3466: if (*second == '\\') {
1.42 schwarze 3467: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3468: if (esc == ESCAPE_ERROR) {
1.222 ! schwarze 3469: mandoc_msg(MANDOCERR_ESC_BAD, ln,
! 3470: (int)(p - buf->buf), "%s", second);
1.149 schwarze 3471: return ROFF_IGN;
1.42 schwarze 3472: }
3473: ssz = (size_t)(p - second);
1.110 schwarze 3474: } else if (*second == '\0') {
1.222 ! schwarze 3475: mandoc_msg(MANDOCERR_TR_ODD, ln,
! 3476: (int)(first - buf->buf), "tr %s", first);
1.42 schwarze 3477: second = " ";
3478: p--;
3479: }
3480:
3481: if (fsz > 1) {
1.80 schwarze 3482: roff_setstrn(&r->xmbtab, first, fsz,
3483: second, ssz, 0);
1.42 schwarze 3484: continue;
3485: }
3486:
1.110 schwarze 3487: if (r->xtab == NULL)
1.80 schwarze 3488: r->xtab = mandoc_calloc(128,
3489: sizeof(struct roffstr));
1.42 schwarze 3490:
3491: free(r->xtab[(int)*first].p);
3492: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3493: r->xtab[(int)*first].sz = ssz;
3494: }
3495:
1.149 schwarze 3496: return ROFF_IGN;
1.42 schwarze 3497: }
3498:
1.211 schwarze 3499: /*
3500: * Implementation of the .return request.
3501: * There is no need to call roff_userret() from here.
3502: * The read module will call that after rewinding the reader stack
3503: * to the place from where the current macro was called.
3504: */
1.212 schwarze 3505: static int
1.211 schwarze 3506: roff_return(ROFF_ARGS)
3507: {
3508: if (r->mstackpos >= 0)
1.212 schwarze 3509: return ROFF_IGN | ROFF_USERRET;
1.211 schwarze 3510:
1.222 ! schwarze 3511: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "return");
1.211 schwarze 3512: return ROFF_IGN;
3513: }
3514:
1.212 schwarze 3515: static int
1.178 schwarze 3516: roff_rn(ROFF_ARGS)
3517: {
3518: const char *value;
3519: char *oldn, *newn, *end;
3520: size_t oldsz, newsz;
1.187 schwarze 3521: int deftype;
1.178 schwarze 3522:
3523: oldn = newn = buf->buf + pos;
3524: if (*oldn == '\0')
3525: return ROFF_IGN;
3526:
3527: oldsz = roff_getname(r, &newn, ln, pos);
3528: if (oldn[oldsz] == '\\' || *newn == '\0')
3529: return ROFF_IGN;
3530:
3531: end = newn;
3532: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3533: if (newsz == 0)
3534: return ROFF_IGN;
3535:
1.187 schwarze 3536: deftype = ROFFDEF_ANY;
3537: value = roff_getstrn(r, oldn, oldsz, &deftype);
3538: switch (deftype) {
3539: case ROFFDEF_USER:
1.178 schwarze 3540: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3541: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3542: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.187 schwarze 3543: break;
3544: case ROFFDEF_PRE:
3545: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3546: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3547: break;
3548: case ROFFDEF_REN:
1.178 schwarze 3549: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3550: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.187 schwarze 3551: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3552: break;
3553: case ROFFDEF_STD:
1.178 schwarze 3554: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.187 schwarze 3555: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3556: break;
3557: default:
3558: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3559: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3560: break;
3561: }
1.178 schwarze 3562: return ROFF_IGN;
3563: }
3564:
1.212 schwarze 3565: static int
1.211 schwarze 3566: roff_shift(ROFF_ARGS)
3567: {
3568: struct mctx *ctx;
3569: int levels, i;
3570:
3571: levels = 1;
3572: if (buf->buf[pos] != '\0' &&
3573: roff_evalnum(r, ln, buf->buf, &pos, &levels, 0) == 0) {
1.222 ! schwarze 3574: mandoc_msg(MANDOCERR_CE_NONUM,
1.211 schwarze 3575: ln, pos, "shift %s", buf->buf + pos);
3576: levels = 1;
3577: }
3578: if (r->mstackpos < 0) {
1.222 ! schwarze 3579: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "shift");
1.211 schwarze 3580: return ROFF_IGN;
3581: }
3582: ctx = r->mstack + r->mstackpos;
3583: if (levels > ctx->argc) {
1.222 ! schwarze 3584: mandoc_msg(MANDOCERR_SHIFT,
1.211 schwarze 3585: ln, pos, "%d, but max is %d", levels, ctx->argc);
3586: levels = ctx->argc;
3587: }
3588: if (levels == 0)
3589: return ROFF_IGN;
3590: for (i = 0; i < levels; i++)
3591: free(ctx->argv[i]);
3592: ctx->argc -= levels;
3593: for (i = 0; i < ctx->argc; i++)
3594: ctx->argv[i] = ctx->argv[i + levels];
3595: return ROFF_IGN;
3596: }
3597:
1.212 schwarze 3598: static int
1.14 schwarze 3599: roff_so(ROFF_ARGS)
3600: {
1.121 schwarze 3601: char *name, *cp;
1.15 schwarze 3602:
1.110 schwarze 3603: name = buf->buf + pos;
1.222 ! schwarze 3604: mandoc_msg(MANDOCERR_SO, ln, ppos, "so %s", name);
1.14 schwarze 3605:
1.22 schwarze 3606: /*
3607: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3608: * opening anything that's not in our cwd or anything beneath
3609: * it. Thus, explicitly disallow traversing up the file-system
3610: * or using absolute paths.
3611: */
3612:
1.110 schwarze 3613: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.222 ! schwarze 3614: mandoc_msg(MANDOCERR_SO_PATH, ln, ppos, ".so %s", name);
1.121 schwarze 3615: buf->sz = mandoc_asprintf(&cp,
3616: ".sp\nSee the file %s.\n.sp", name) + 1;
3617: free(buf->buf);
3618: buf->buf = cp;
3619: *offs = 0;
1.149 schwarze 3620: return ROFF_REPARSE;
1.14 schwarze 3621: }
3622:
3623: *offs = pos;
1.149 schwarze 3624: return ROFF_SO;
1.7 schwarze 3625: }
3626:
1.138 schwarze 3627: /* --- user defined strings and macros ------------------------------------ */
3628:
1.212 schwarze 3629: static int
1.16 schwarze 3630: roff_userdef(ROFF_ARGS)
1.12 schwarze 3631: {
1.211 schwarze 3632: struct mctx *ctx;
3633: char *arg, *ap, *dst, *src;
3634: size_t sz;
3635:
3636: /* Initialize a new macro stack context. */
3637:
3638: if (++r->mstackpos == r->mstacksz) {
3639: r->mstack = mandoc_recallocarray(r->mstack,
3640: r->mstacksz, r->mstacksz + 8, sizeof(*r->mstack));
3641: r->mstacksz += 8;
3642: }
3643: ctx = r->mstack + r->mstackpos;
3644: ctx->argsz = 0;
3645: ctx->argc = 0;
3646: ctx->argv = NULL;
3647:
3648: /*
3649: * Collect pointers to macro argument strings,
3650: * NUL-terminating them and escaping quotes.
3651: */
3652:
3653: src = buf->buf + pos;
3654: while (*src != '\0') {
3655: if (ctx->argc == ctx->argsz) {
3656: ctx->argsz += 8;
3657: ctx->argv = mandoc_reallocarray(ctx->argv,
3658: ctx->argsz, sizeof(*ctx->argv));
3659: }
3660: arg = mandoc_getarg(r->parse, &src, ln, &pos);
3661: sz = 1; /* For the terminating NUL. */
3662: for (ap = arg; *ap != '\0'; ap++)
3663: sz += *ap == '"' ? 4 : 1;
3664: ctx->argv[ctx->argc++] = dst = mandoc_malloc(sz);
3665: for (ap = arg; *ap != '\0'; ap++) {
3666: if (*ap == '"') {
3667: memcpy(dst, "\\(dq", 4);
3668: dst += 4;
3669: } else
3670: *dst++ = *ap;
1.16 schwarze 3671: }
1.211 schwarze 3672: *dst = '\0';
1.209 schwarze 3673: }
3674:
1.211 schwarze 3675: /* Replace the macro invocation by the macro definition. */
1.135 schwarze 3676:
1.110 schwarze 3677: free(buf->buf);
1.211 schwarze 3678: buf->buf = mandoc_strdup(r->current_string);
3679: buf->sz = strlen(buf->buf) + 1;
1.120 schwarze 3680: *offs = 0;
1.16 schwarze 3681:
1.149 schwarze 3682: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
1.212 schwarze 3683: ROFF_REPARSE | ROFF_USERCALL : ROFF_IGN | ROFF_APPEND;
1.12 schwarze 3684: }
1.28 schwarze 3685:
1.178 schwarze 3686: /*
3687: * Calling a high-level macro that was renamed with .rn.
3688: * r->current_string has already been set up by roff_parse().
3689: */
1.212 schwarze 3690: static int
1.178 schwarze 3691: roff_renamed(ROFF_ARGS)
3692: {
3693: char *nbuf;
3694:
1.187 schwarze 3695: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
3696: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.178 schwarze 3697: free(buf->buf);
3698: buf->buf = nbuf;
1.201 schwarze 3699: *offs = 0;
1.178 schwarze 3700: return ROFF_CONT;
3701: }
3702:
1.85 schwarze 3703: static size_t
1.28 schwarze 3704: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3705: {
3706: char *name, *cp;
1.85 schwarze 3707: size_t namesz;
1.28 schwarze 3708:
3709: name = *cpp;
3710: if ('\0' == *name)
1.149 schwarze 3711: return 0;
1.28 schwarze 3712:
1.85 schwarze 3713: /* Read until end of name and terminate it with NUL. */
3714: for (cp = name; 1; cp++) {
3715: if ('\0' == *cp || ' ' == *cp) {
3716: namesz = cp - name;
3717: break;
3718: }
1.28 schwarze 3719: if ('\\' != *cp)
3720: continue;
1.88 schwarze 3721: namesz = cp - name;
3722: if ('{' == cp[1] || '}' == cp[1])
3723: break;
1.28 schwarze 3724: cp++;
3725: if ('\\' == *cp)
3726: continue;
1.222 ! schwarze 3727: mandoc_msg(MANDOCERR_NAMESC, ln, pos,
1.97 schwarze 3728: "%.*s", (int)(cp - name + 1), name);
1.85 schwarze 3729: mandoc_escape((const char **)&cp, NULL, NULL);
3730: break;
1.28 schwarze 3731: }
3732:
3733: /* Read past spaces. */
3734: while (' ' == *cp)
3735: cp++;
3736:
3737: *cpp = cp;
1.149 schwarze 3738: return namesz;
1.28 schwarze 3739: }
3740:
1.16 schwarze 3741: /*
3742: * Store *string into the user-defined string called *name.
3743: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.66 schwarze 3744: * append == 0: replace mode
3745: * append == 1: single-line append mode
3746: * append == 2: multiline append mode, append '\n' after each call
1.16 schwarze 3747: */
1.8 schwarze 3748: static void
1.16 schwarze 3749: roff_setstr(struct roff *r, const char *name, const char *string,
1.66 schwarze 3750: int append)
1.7 schwarze 3751: {
1.187 schwarze 3752: size_t namesz;
1.42 schwarze 3753:
1.187 schwarze 3754: namesz = strlen(name);
3755: roff_setstrn(&r->strtab, name, namesz, string,
1.80 schwarze 3756: string ? strlen(string) : 0, append);
1.187 schwarze 3757: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.42 schwarze 3758: }
3759:
3760: static void
3761: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.66 schwarze 3762: const char *string, size_t stringsz, int append)
1.42 schwarze 3763: {
3764: struct roffkv *n;
3765: char *c;
3766: int i;
3767: size_t oldch, newch;
1.7 schwarze 3768:
1.16 schwarze 3769: /* Search for an existing string with the same name. */
1.42 schwarze 3770: n = *r;
3771:
1.84 schwarze 3772: while (n && (namesz != n->key.sz ||
3773: strncmp(n->key.p, name, namesz)))
1.7 schwarze 3774: n = n->next;
1.8 schwarze 3775:
3776: if (NULL == n) {
1.16 schwarze 3777: /* Create a new string table entry. */
1.42 schwarze 3778: n = mandoc_malloc(sizeof(struct roffkv));
3779: n->key.p = mandoc_strndup(name, namesz);
3780: n->key.sz = namesz;
3781: n->val.p = NULL;
3782: n->val.sz = 0;
3783: n->next = *r;
3784: *r = n;
1.66 schwarze 3785: } else if (0 == append) {
1.42 schwarze 3786: free(n->val.p);
3787: n->val.p = NULL;
3788: n->val.sz = 0;
1.16 schwarze 3789: }
3790:
3791: if (NULL == string)
3792: return;
3793:
3794: /*
3795: * One additional byte for the '\n' in multiline mode,
3796: * and one for the terminating '\0'.
3797: */
1.66 schwarze 3798: newch = stringsz + (1 < append ? 2u : 1u);
1.42 schwarze 3799:
3800: if (NULL == n->val.p) {
3801: n->val.p = mandoc_malloc(newch);
3802: *n->val.p = '\0';
1.16 schwarze 3803: oldch = 0;
3804: } else {
1.42 schwarze 3805: oldch = n->val.sz;
3806: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.16 schwarze 3807: }
3808:
3809: /* Skip existing content in the destination buffer. */
1.42 schwarze 3810: c = n->val.p + (int)oldch;
1.16 schwarze 3811:
3812: /* Append new content to the destination buffer. */
1.42 schwarze 3813: i = 0;
3814: while (i < (int)stringsz) {
1.16 schwarze 3815: /*
3816: * Rudimentary roff copy mode:
3817: * Handle escaped backslashes.
3818: */
1.42 schwarze 3819: if ('\\' == string[i] && '\\' == string[i + 1])
3820: i++;
3821: *c++ = string[i++];
1.16 schwarze 3822: }
1.8 schwarze 3823:
1.16 schwarze 3824: /* Append terminating bytes. */
1.66 schwarze 3825: if (1 < append)
1.16 schwarze 3826: *c++ = '\n';
1.42 schwarze 3827:
1.16 schwarze 3828: *c = '\0';
1.42 schwarze 3829: n->val.sz = (int)(c - n->val.p);
1.7 schwarze 3830: }
3831:
1.8 schwarze 3832: static const char *
1.197 schwarze 3833: roff_getstrn(struct roff *r, const char *name, size_t len,
1.187 schwarze 3834: int *deftype)
1.7 schwarze 3835: {
1.187 schwarze 3836: const struct roffkv *n;
1.197 schwarze 3837: int found, i;
1.187 schwarze 3838: enum roff_tok tok;
3839:
1.197 schwarze 3840: found = 0;
3841: for (n = r->strtab; n != NULL; n = n->next) {
3842: if (strncmp(name, n->key.p, len) != 0 ||
3843: n->key.p[len] != '\0' || n->val.p == NULL)
3844: continue;
3845: if (*deftype & ROFFDEF_USER) {
3846: *deftype = ROFFDEF_USER;
3847: return n->val.p;
3848: } else {
3849: found = 1;
3850: break;
3851: }
3852: }
3853: for (n = r->rentab; n != NULL; n = n->next) {
3854: if (strncmp(name, n->key.p, len) != 0 ||
3855: n->key.p[len] != '\0' || n->val.p == NULL)
3856: continue;
3857: if (*deftype & ROFFDEF_REN) {
3858: *deftype = ROFFDEF_REN;
3859: return n->val.p;
3860: } else {
3861: found = 1;
3862: break;
1.187 schwarze 3863: }
3864: }
1.197 schwarze 3865: for (i = 0; i < PREDEFS_MAX; i++) {
3866: if (strncmp(name, predefs[i].name, len) != 0 ||
3867: predefs[i].name[len] != '\0')
3868: continue;
3869: if (*deftype & ROFFDEF_PRE) {
3870: *deftype = ROFFDEF_PRE;
3871: return predefs[i].str;
3872: } else {
3873: found = 1;
3874: break;
1.187 schwarze 3875: }
3876: }
1.197 schwarze 3877: if (r->man->macroset != MACROSET_MAN) {
3878: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
3879: if (strncmp(name, roff_name[tok], len) != 0 ||
3880: roff_name[tok][len] != '\0')
3881: continue;
3882: if (*deftype & ROFFDEF_STD) {
3883: *deftype = ROFFDEF_STD;
3884: return NULL;
3885: } else {
3886: found = 1;
3887: break;
1.187 schwarze 3888: }
3889: }
3890: }
1.197 schwarze 3891: if (r->man->macroset != MACROSET_MDOC) {
3892: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
3893: if (strncmp(name, roff_name[tok], len) != 0 ||
3894: roff_name[tok][len] != '\0')
3895: continue;
3896: if (*deftype & ROFFDEF_STD) {
3897: *deftype = ROFFDEF_STD;
3898: return NULL;
3899: } else {
3900: found = 1;
3901: break;
1.187 schwarze 3902: }
3903: }
1.197 schwarze 3904: }
3905:
3906: if (found == 0 && *deftype != ROFFDEF_ANY) {
3907: if (*deftype & ROFFDEF_REN) {
3908: /*
3909: * This might still be a request,
3910: * so do not treat it as undefined yet.
3911: */
3912: *deftype = ROFFDEF_UNDEF;
3913: return NULL;
1.187 schwarze 3914: }
1.197 schwarze 3915:
3916: /* Using an undefined string defines it to be empty. */
3917:
3918: roff_setstrn(&r->strtab, name, len, "", 0, 0);
3919: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.187 schwarze 3920: }
1.197 schwarze 3921:
1.187 schwarze 3922: *deftype = 0;
1.149 schwarze 3923: return NULL;
1.7 schwarze 3924: }
3925:
1.8 schwarze 3926: static void
1.42 schwarze 3927: roff_freestr(struct roffkv *r)
1.7 schwarze 3928: {
1.42 schwarze 3929: struct roffkv *n, *nn;
1.7 schwarze 3930:
1.42 schwarze 3931: for (n = r; n; n = nn) {
3932: free(n->key.p);
3933: free(n->val.p);
1.7 schwarze 3934: nn = n->next;
3935: free(n);
3936: }
1.27 schwarze 3937: }
1.138 schwarze 3938:
3939: /* --- accessors and utility functions ------------------------------------ */
1.42 schwarze 3940:
3941: /*
3942: * Duplicate an input string, making the appropriate character
3943: * conversations (as stipulated by `tr') along the way.
3944: * Returns a heap-allocated string with all the replacements made.
3945: */
3946: char *
3947: roff_strdup(const struct roff *r, const char *p)
3948: {
3949: const struct roffkv *cp;
3950: char *res;
3951: const char *pp;
3952: size_t ssz, sz;
3953: enum mandoc_esc esc;
3954:
3955: if (NULL == r->xmbtab && NULL == r->xtab)
1.149 schwarze 3956: return mandoc_strdup(p);
1.42 schwarze 3957: else if ('\0' == *p)
1.149 schwarze 3958: return mandoc_strdup("");
1.42 schwarze 3959:
3960: /*
3961: * Step through each character looking for term matches
3962: * (remember that a `tr' can be invoked with an escape, which is
3963: * a glyph but the escape is multi-character).
3964: * We only do this if the character hash has been initialised
3965: * and the string is >0 length.
3966: */
3967:
3968: res = NULL;
3969: ssz = 0;
3970:
3971: while ('\0' != *p) {
1.161 schwarze 3972: assert((unsigned int)*p < 128);
3973: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.42 schwarze 3974: sz = r->xtab[(int)*p].sz;
3975: res = mandoc_realloc(res, ssz + sz + 1);
3976: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3977: ssz += sz;
3978: p++;
3979: continue;
3980: } else if ('\\' != *p) {
3981: res = mandoc_realloc(res, ssz + 2);
3982: res[ssz++] = *p++;
3983: continue;
3984: }
3985:
3986: /* Search for term matches. */
3987: for (cp = r->xmbtab; cp; cp = cp->next)
3988: if (0 == strncmp(p, cp->key.p, cp->key.sz))
3989: break;
3990:
3991: if (NULL != cp) {
3992: /*
3993: * A match has been found.
3994: * Append the match to the array and move
3995: * forward by its keysize.
3996: */
1.80 schwarze 3997: res = mandoc_realloc(res,
3998: ssz + cp->val.sz + 1);
1.42 schwarze 3999: memcpy(res + ssz, cp->val.p, cp->val.sz);
4000: ssz += cp->val.sz;
4001: p += (int)cp->key.sz;
4002: continue;
4003: }
4004:
4005: /*
4006: * Handle escapes carefully: we need to copy
4007: * over just the escape itself, or else we might
4008: * do replacements within the escape itself.
4009: * Make sure to pass along the bogus string.
4010: */
4011: pp = p++;
4012: esc = mandoc_escape(&p, NULL, NULL);
4013: if (ESCAPE_ERROR == esc) {
4014: sz = strlen(pp);
4015: res = mandoc_realloc(res, ssz + sz + 1);
4016: memcpy(res + ssz, pp, sz);
4017: break;
4018: }
1.80 schwarze 4019: /*
4020: * We bail out on bad escapes.
1.42 schwarze 4021: * No need to warn: we already did so when
4022: * roff_res() was called.
4023: */
4024: sz = (int)(p - pp);
4025: res = mandoc_realloc(res, ssz + sz + 1);
4026: memcpy(res + ssz, pp, sz);
4027: ssz += sz;
4028: }
4029:
4030: res[(int)ssz] = '\0';
1.149 schwarze 4031: return res;
1.99 schwarze 4032: }
4033:
4034: int
4035: roff_getformat(const struct roff *r)
4036: {
4037:
1.149 schwarze 4038: return r->format;
1.48 schwarze 4039: }
4040:
4041: /*
1.80 schwarze 4042: * Find out whether a line is a macro line or not.
1.48 schwarze 4043: * If it is, adjust the current position and return one; if it isn't,
4044: * return zero and don't change the current position.
4045: * If the control character has been set with `.cc', then let that grain
4046: * precedence.
4047: * This is slighly contrary to groff, where using the non-breaking
4048: * control character when `cc' has been invoked will cause the
4049: * non-breaking macro contents to be printed verbatim.
4050: */
4051: int
4052: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
4053: {
4054: int pos;
4055:
4056: pos = *ppos;
4057:
1.175 schwarze 4058: if (r->control != '\0' && cp[pos] == r->control)
1.48 schwarze 4059: pos++;
1.175 schwarze 4060: else if (r->control != '\0')
1.149 schwarze 4061: return 0;
1.48 schwarze 4062: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
4063: pos += 2;
4064: else if ('.' == cp[pos] || '\'' == cp[pos])
4065: pos++;
4066: else
1.149 schwarze 4067: return 0;
1.48 schwarze 4068:
4069: while (' ' == cp[pos] || '\t' == cp[pos])
4070: pos++;
4071:
4072: *ppos = pos;
1.149 schwarze 4073: return 1;
1.1 schwarze 4074: }