Annotation of src/usr.bin/mandoc/roff.c, Revision 1.217
1.217 ! schwarze 1: /* $OpenBSD: roff.c,v 1.216 2018/12/04 02:53:45 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"
1.217 ! schwarze 33: #include "tbl.h"
1.98 daniel 34: #include "libmandoc.h"
1.138 schwarze 35: #include "roff_int.h"
1.27 schwarze 36: #include "libroff.h"
1.2 schwarze 37:
1.43 schwarze 38: /* Maximum number of string expansions per line, to break infinite loops. */
39: #define EXPAND_LIMIT 1000
40:
1.187 schwarze 41: /* Types of definitions of macros and strings. */
42: #define ROFFDEF_USER (1 << 1) /* User-defined. */
43: #define ROFFDEF_PRE (1 << 2) /* Predefined. */
44: #define ROFFDEF_REN (1 << 3) /* Renamed standard macro. */
45: #define ROFFDEF_STD (1 << 4) /* mdoc(7) or man(7) macro. */
46: #define ROFFDEF_ANY (ROFFDEF_USER | ROFFDEF_PRE | \
47: ROFFDEF_REN | ROFFDEF_STD)
1.197 schwarze 48: #define ROFFDEF_UNDEF (1 << 5) /* Completely undefined. */
1.187 schwarze 49:
1.138 schwarze 50: /* --- data types --------------------------------------------------------- */
51:
1.41 schwarze 52: /*
1.42 schwarze 53: * An incredibly-simple string buffer.
54: */
1.8 schwarze 55: struct roffstr {
1.42 schwarze 56: char *p; /* nil-terminated buffer */
57: size_t sz; /* saved strlen(p) */
58: };
59:
60: /*
61: * A key-value roffstr pair as part of a singly-linked list.
62: */
63: struct roffkv {
64: struct roffstr key;
65: struct roffstr val;
66: struct roffkv *next; /* next in list */
1.8 schwarze 67: };
68:
1.52 schwarze 69: /*
70: * A single number register as part of a singly-linked list.
71: */
72: struct roffreg {
73: struct roffstr key;
1.53 schwarze 74: int val;
1.199 schwarze 75: int step;
1.52 schwarze 76: struct roffreg *next;
77: };
78:
1.167 schwarze 79: /*
80: * Association of request and macro names with token IDs.
81: */
82: struct roffreq {
83: enum roff_tok tok;
84: char name[];
85: };
86:
1.211 schwarze 87: /*
88: * A macro processing context.
89: * More than one is needed when macro calls are nested.
90: */
91: struct mctx {
92: char **argv;
93: int argc;
94: int argsz;
95: };
96:
1.1 schwarze 97: struct roff {
1.35 schwarze 98: struct mparse *parse; /* parse point */
1.168 schwarze 99: struct roff_man *man; /* mdoc or man parser */
1.1 schwarze 100: struct roffnode *last; /* leaf of stack */
1.211 schwarze 101: struct mctx *mstack; /* stack of macro contexts */
1.96 schwarze 102: int *rstack; /* stack of inverted `ie' values */
1.167 schwarze 103: struct ohash *reqtab; /* request lookup table */
1.52 schwarze 104: struct roffreg *regtab; /* number registers */
1.42 schwarze 105: struct roffkv *strtab; /* user-defined strings & macros */
1.178 schwarze 106: struct roffkv *rentab; /* renamed strings & macros */
1.42 schwarze 107: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
108: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.16 schwarze 109: const char *current_string; /* value of last called user macro */
1.27 schwarze 110: struct tbl_node *first_tbl; /* first table parsed */
111: struct tbl_node *last_tbl; /* last table parsed */
112: struct tbl_node *tbl; /* current table being parsed */
1.191 schwarze 113: struct eqn_node *last_eqn; /* equation parser */
114: struct eqn_node *eqn; /* active equation parser */
1.102 schwarze 115: int eqn_inline; /* current equation is inline */
1.96 schwarze 116: int options; /* parse options */
1.211 schwarze 117: int mstacksz; /* current size of mstack */
118: int mstackpos; /* position in mstack */
1.96 schwarze 119: int rstacksz; /* current size limit of rstack */
120: int rstackpos; /* position in rstack */
1.99 schwarze 121: int format; /* current file in mdoc or man format */
1.96 schwarze 122: char control; /* control character */
1.175 schwarze 123: char escape; /* escape character */
1.1 schwarze 124: };
125:
126: struct roffnode {
1.166 schwarze 127: enum roff_tok tok; /* type of node */
1.1 schwarze 128: struct roffnode *parent; /* up one in stack */
129: int line; /* parse line */
130: int col; /* parse col */
1.16 schwarze 131: char *name; /* node name, e.g. macro name */
1.2 schwarze 132: char *end; /* end-rules: custom token */
133: int endspan; /* end-rules: next-line or infty */
1.71 schwarze 134: int rule; /* current evaluation rule */
1.1 schwarze 135: };
136:
137: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.166 schwarze 138: enum roff_tok tok, /* tok of macro */ \
1.110 schwarze 139: struct buf *buf, /* input buffer */ \
1.1 schwarze 140: int ln, /* parse line */ \
1.2 schwarze 141: int ppos, /* original pos in buffer */ \
142: int pos, /* current pos in buffer */ \
143: int *offs /* reset offset of buffer data */
1.1 schwarze 144:
1.212 schwarze 145: typedef int (*roffproc)(ROFF_ARGS);
1.1 schwarze 146:
147: struct roffmac {
1.2 schwarze 148: roffproc proc; /* process new macro */
149: roffproc text; /* process as child text of macro */
150: roffproc sub; /* process as child of macro */
151: int flags;
152: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.1 schwarze 153: };
154:
1.37 schwarze 155: struct predef {
156: const char *name; /* predefined input name */
157: const char *str; /* replacement symbol */
158: };
159:
160: #define PREDEF(__name, __str) \
161: { (__name), (__str) },
162:
1.138 schwarze 163: /* --- function prototypes ------------------------------------------------ */
164:
1.212 schwarze 165: static int roffnode_cleanscope(struct roff *);
166: static int roffnode_pop(struct roff *);
1.166 schwarze 167: static void roffnode_push(struct roff *, enum roff_tok,
1.42 schwarze 168: const char *, int, int);
1.193 schwarze 169: static void roff_addtbl(struct roff_man *, struct tbl_node *);
1.212 schwarze 170: static int roff_als(ROFF_ARGS);
171: static int roff_block(ROFF_ARGS);
172: static int roff_block_text(ROFF_ARGS);
173: static int roff_block_sub(ROFF_ARGS);
174: static int roff_br(ROFF_ARGS);
175: static int roff_cblock(ROFF_ARGS);
176: static int roff_cc(ROFF_ARGS);
177: static int roff_ccond(struct roff *, int, int);
1.213 schwarze 178: static int roff_char(ROFF_ARGS);
1.212 schwarze 179: static int roff_cond(ROFF_ARGS);
180: static int roff_cond_text(ROFF_ARGS);
181: static int roff_cond_sub(ROFF_ARGS);
182: static int roff_ds(ROFF_ARGS);
183: static int roff_ec(ROFF_ARGS);
184: static int roff_eo(ROFF_ARGS);
185: static int roff_eqndelim(struct roff *, struct buf *, int);
1.143 schwarze 186: static int roff_evalcond(struct roff *r, int, char *, int *);
1.106 schwarze 187: static int roff_evalnum(struct roff *, int,
188: const char *, int *, int *, int);
189: static int roff_evalpar(struct roff *, int,
1.133 schwarze 190: const char *, int *, int *, int);
1.71 schwarze 191: static int roff_evalstrcond(const char *, int *);
1.42 schwarze 192: static void roff_free1(struct roff *);
1.52 schwarze 193: static void roff_freereg(struct roffreg *);
1.42 schwarze 194: static void roff_freestr(struct roffkv *);
1.85 schwarze 195: static size_t roff_getname(struct roff *, char **, int, int);
1.133 schwarze 196: static int roff_getnum(const char *, int *, int *, int);
1.56 schwarze 197: static int roff_getop(const char *, int *, char *);
1.199 schwarze 198: static int roff_getregn(struct roff *,
199: const char *, size_t, char);
1.145 schwarze 200: static int roff_getregro(const struct roff *,
201: const char *name);
1.197 schwarze 202: static const char *roff_getstrn(struct roff *,
1.187 schwarze 203: const char *, size_t, int *);
1.143 schwarze 204: static int roff_hasregn(const struct roff *,
205: const char *, size_t);
1.212 schwarze 206: static int roff_insec(ROFF_ARGS);
207: static int roff_it(ROFF_ARGS);
208: static int roff_line_ignore(ROFF_ARGS);
1.137 schwarze 209: static void roff_man_alloc1(struct roff_man *);
210: static void roff_man_free1(struct roff_man *);
1.212 schwarze 211: static int roff_manyarg(ROFF_ARGS);
212: static int roff_nop(ROFF_ARGS);
213: static int roff_nr(ROFF_ARGS);
214: static int roff_onearg(ROFF_ARGS);
1.166 schwarze 215: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.87 schwarze 216: int, int);
1.212 schwarze 217: static int roff_parsetext(struct roff *, struct buf *,
1.177 schwarze 218: int, int *);
1.212 schwarze 219: static int roff_renamed(ROFF_ARGS);
220: static int roff_res(struct roff *, struct buf *, int, int);
221: static int roff_return(ROFF_ARGS);
222: static int roff_rm(ROFF_ARGS);
223: static int roff_rn(ROFF_ARGS);
224: static int roff_rr(ROFF_ARGS);
1.198 schwarze 225: static void roff_setregn(struct roff *, const char *,
1.199 schwarze 226: size_t, int, char, int);
1.8 schwarze 227: static void roff_setstr(struct roff *,
1.16 schwarze 228: const char *, const char *, int);
1.80 schwarze 229: static void roff_setstrn(struct roffkv **, const char *,
1.42 schwarze 230: size_t, const char *, size_t, int);
1.212 schwarze 231: static int roff_shift(ROFF_ARGS);
232: static int roff_so(ROFF_ARGS);
233: static int roff_tr(ROFF_ARGS);
234: static int roff_Dd(ROFF_ARGS);
235: static int roff_TE(ROFF_ARGS);
236: static int roff_TS(ROFF_ARGS);
237: static int roff_EQ(ROFF_ARGS);
238: static int roff_EN(ROFF_ARGS);
239: static int roff_T_(ROFF_ARGS);
240: static int roff_unsupp(ROFF_ARGS);
241: static int roff_userdef(ROFF_ARGS);
1.1 schwarze 242:
1.138 schwarze 243: /* --- constant data ------------------------------------------------------ */
244:
1.133 schwarze 245: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
246: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
247:
1.166 schwarze 248: const char *__roff_name[MAN_MAX + 1] = {
1.177 schwarze 249: "br", "ce", "ft", "ll",
1.184 schwarze 250: "mc", "po", "rj", "sp",
251: "ta", "ti", NULL,
1.166 schwarze 252: "ab", "ad", "af", "aln",
253: "als", "am", "am1", "ami",
254: "ami1", "as", "as1", "asciify",
255: "backtrace", "bd", "bleedat", "blm",
256: "box", "boxa", "bp", "BP",
257: "break", "breakchar", "brnl", "brp",
1.177 schwarze 258: "brpnl", "c2", "cc",
1.166 schwarze 259: "cf", "cflags", "ch", "char",
260: "chop", "class", "close", "CL",
261: "color", "composite", "continue", "cp",
262: "cropat", "cs", "cu", "da",
263: "dch", "Dd", "de", "de1",
264: "defcolor", "dei", "dei1", "device",
265: "devicem", "di", "do", "ds",
266: "ds1", "dwh", "dt", "ec",
267: "ecr", "ecs", "el", "em",
268: "EN", "eo", "EP", "EQ",
269: "errprint", "ev", "evc", "ex",
270: "fallback", "fam", "fc", "fchar",
271: "fcolor", "fdeferlig", "feature", "fkern",
272: "fl", "flig", "fp", "fps",
273: "fschar", "fspacewidth", "fspecial", "ftr",
274: "fzoom", "gcolor", "hc", "hcode",
275: "hidechar", "hla", "hlm", "hpf",
276: "hpfa", "hpfcode", "hw", "hy",
277: "hylang", "hylen", "hym", "hypp",
278: "hys", "ie", "if", "ig",
279: "index", "it", "itc", "IX",
280: "kern", "kernafter", "kernbefore", "kernpair",
281: "lc", "lc_ctype", "lds", "length",
282: "letadj", "lf", "lg", "lhang",
283: "linetabs", "lnr", "lnrf", "lpfx",
1.176 schwarze 284: "ls", "lsm", "lt",
1.166 schwarze 285: "mediasize", "minss", "mk", "mso",
286: "na", "ne", "nh", "nhychar",
287: "nm", "nn", "nop", "nr",
288: "nrf", "nroff", "ns", "nx",
289: "open", "opena", "os", "output",
290: "padj", "papersize", "pc", "pev",
291: "pi", "PI", "pl", "pm",
1.184 schwarze 292: "pn", "pnr", "ps",
1.166 schwarze 293: "psbb", "pshape", "pso", "ptr",
294: "pvs", "rchar", "rd", "recursionlimit",
1.181 schwarze 295: "return", "rfschar", "rhang",
1.166 schwarze 296: "rm", "rn", "rnn", "rr",
297: "rs", "rt", "schar", "sentchar",
298: "shc", "shift", "sizes", "so",
299: "spacewidth", "special", "spreadwarn", "ss",
300: "sty", "substring", "sv", "sy",
1.172 schwarze 301: "T&", "tc", "TE",
1.173 schwarze 302: "TH", "tkf", "tl",
1.166 schwarze 303: "tm", "tm1", "tmc", "tr",
304: "track", "transchar", "trf", "trimat",
305: "trin", "trnt", "troff", "TS",
306: "uf", "ul", "unformat", "unwatch",
307: "unwatchn", "vpt", "vs", "warn",
308: "warnscale", "watch", "watchlength", "watchn",
309: "wh", "while", "write", "writec",
310: "writem", "xflag", ".", NULL,
1.178 schwarze 311: NULL, "text",
1.166 schwarze 312: "Dd", "Dt", "Os", "Sh",
313: "Ss", "Pp", "D1", "Dl",
314: "Bd", "Ed", "Bl", "El",
315: "It", "Ad", "An", "Ap",
316: "Ar", "Cd", "Cm", "Dv",
317: "Er", "Ev", "Ex", "Fa",
318: "Fd", "Fl", "Fn", "Ft",
319: "Ic", "In", "Li", "Nd",
320: "Nm", "Op", "Ot", "Pa",
321: "Rv", "St", "Va", "Vt",
322: "Xr", "%A", "%B", "%D",
323: "%I", "%J", "%N", "%O",
324: "%P", "%R", "%T", "%V",
325: "Ac", "Ao", "Aq", "At",
326: "Bc", "Bf", "Bo", "Bq",
327: "Bsx", "Bx", "Db", "Dc",
328: "Do", "Dq", "Ec", "Ef",
329: "Em", "Eo", "Fx", "Ms",
330: "No", "Ns", "Nx", "Ox",
331: "Pc", "Pf", "Po", "Pq",
332: "Qc", "Ql", "Qo", "Qq",
333: "Re", "Rs", "Sc", "So",
334: "Sq", "Sm", "Sx", "Sy",
335: "Tn", "Ux", "Xc", "Xo",
336: "Fo", "Fc", "Oo", "Oc",
337: "Bk", "Ek", "Bt", "Hf",
338: "Fr", "Ud", "Lb", "Lp",
339: "Lk", "Mt", "Brq", "Bro",
340: "Brc", "%C", "Es", "En",
1.171 schwarze 341: "Dx", "%Q", "%U", "Ta",
342: NULL,
1.166 schwarze 343: "TH", "SH", "SS", "TP",
1.204 schwarze 344: "TQ",
1.166 schwarze 345: "LP", "PP", "P", "IP",
346: "HP", "SM", "SB", "BI",
347: "IB", "BR", "RB", "R",
348: "B", "I", "IR", "RI",
1.171 schwarze 349: "nf", "fi",
1.166 schwarze 350: "RE", "RS", "DT", "UC",
1.169 schwarze 351: "PD", "AT", "in",
1.205 schwarze 352: "SY", "YS", "OP",
353: "EX", "EE", "UR",
1.189 bentley 354: "UE", "MT", "ME", NULL
1.166 schwarze 355: };
356: const char *const *roff_name = __roff_name;
357:
358: static struct roffmac roffs[TOKEN_NONE] = {
1.168 schwarze 359: { roff_br, NULL, NULL, 0 }, /* br */
1.177 schwarze 360: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.169 schwarze 361: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.170 schwarze 362: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.176 schwarze 363: { roff_onearg, NULL, NULL, 0 }, /* mc */
1.184 schwarze 364: { roff_onearg, NULL, NULL, 0 }, /* po */
1.181 schwarze 365: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.171 schwarze 366: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.172 schwarze 367: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.173 schwarze 368: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.168 schwarze 369: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.167 schwarze 370: { roff_unsupp, NULL, NULL, 0 }, /* ab */
371: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
372: { roff_line_ignore, NULL, NULL, 0 }, /* af */
373: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.183 schwarze 374: { roff_als, NULL, NULL, 0 }, /* als */
1.167 schwarze 375: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
376: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
377: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
378: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
379: { roff_ds, NULL, NULL, 0 }, /* as */
380: { roff_ds, NULL, NULL, 0 }, /* as1 */
381: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
382: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
383: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
384: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
385: { roff_unsupp, NULL, NULL, 0 }, /* blm */
386: { roff_unsupp, NULL, NULL, 0 }, /* box */
387: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
388: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
389: { roff_unsupp, NULL, NULL, 0 }, /* BP */
390: { roff_unsupp, NULL, NULL, 0 }, /* break */
391: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
392: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.168 schwarze 393: { roff_br, NULL, NULL, 0 }, /* brp */
1.167 schwarze 394: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
395: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
396: { roff_cc, NULL, NULL, 0 }, /* cc */
397: { roff_insec, NULL, NULL, 0 }, /* cf */
398: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
399: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
1.213 schwarze 400: { roff_char, NULL, NULL, 0 }, /* char */
1.167 schwarze 401: { roff_unsupp, NULL, NULL, 0 }, /* chop */
402: { roff_line_ignore, NULL, NULL, 0 }, /* class */
403: { roff_insec, NULL, NULL, 0 }, /* close */
404: { roff_unsupp, NULL, NULL, 0 }, /* CL */
405: { roff_line_ignore, NULL, NULL, 0 }, /* color */
406: { roff_unsupp, NULL, NULL, 0 }, /* composite */
407: { roff_unsupp, NULL, NULL, 0 }, /* continue */
408: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
409: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
410: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
411: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
412: { roff_unsupp, NULL, NULL, 0 }, /* da */
413: { roff_unsupp, NULL, NULL, 0 }, /* dch */
414: { roff_Dd, NULL, NULL, 0 }, /* Dd */
415: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
416: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
417: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
418: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
419: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
420: { roff_unsupp, NULL, NULL, 0 }, /* device */
421: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
422: { roff_unsupp, NULL, NULL, 0 }, /* di */
423: { roff_unsupp, NULL, NULL, 0 }, /* do */
424: { roff_ds, NULL, NULL, 0 }, /* ds */
425: { roff_ds, NULL, NULL, 0 }, /* ds1 */
426: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
427: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.175 schwarze 428: { roff_ec, NULL, NULL, 0 }, /* ec */
1.167 schwarze 429: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
430: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
431: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
432: { roff_unsupp, NULL, NULL, 0 }, /* em */
433: { roff_EN, NULL, NULL, 0 }, /* EN */
1.175 schwarze 434: { roff_eo, NULL, NULL, 0 }, /* eo */
1.167 schwarze 435: { roff_unsupp, NULL, NULL, 0 }, /* EP */
436: { roff_EQ, NULL, NULL, 0 }, /* EQ */
437: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
438: { roff_unsupp, NULL, NULL, 0 }, /* ev */
439: { roff_unsupp, NULL, NULL, 0 }, /* evc */
440: { roff_unsupp, NULL, NULL, 0 }, /* ex */
441: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
442: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
443: { roff_unsupp, NULL, NULL, 0 }, /* fc */
444: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
445: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
446: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
447: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
448: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
449: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
450: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
451: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
452: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
453: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
454: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
455: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
456: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
457: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
458: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
459: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
460: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
461: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
462: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
463: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
464: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
465: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
466: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
467: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
468: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
469: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
470: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
471: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
472: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
473: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
474: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
475: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
476: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
477: { roff_unsupp, NULL, NULL, 0 }, /* index */
478: { roff_it, NULL, NULL, 0 }, /* it */
479: { roff_unsupp, NULL, NULL, 0 }, /* itc */
480: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
481: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
482: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
483: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
484: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
485: { roff_unsupp, NULL, NULL, 0 }, /* lc */
486: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
487: { roff_unsupp, NULL, NULL, 0 }, /* lds */
488: { roff_unsupp, NULL, NULL, 0 }, /* length */
489: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
490: { roff_insec, NULL, NULL, 0 }, /* lf */
491: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
492: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
493: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
494: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
495: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
496: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
497: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
498: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
499: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
500: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
501: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
502: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
503: { roff_insec, NULL, NULL, 0 }, /* mso */
504: { roff_line_ignore, NULL, NULL, 0 }, /* na */
505: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
506: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
507: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
508: { roff_unsupp, NULL, NULL, 0 }, /* nm */
509: { roff_unsupp, NULL, NULL, 0 }, /* nn */
1.202 schwarze 510: { roff_nop, NULL, NULL, 0 }, /* nop */
1.167 schwarze 511: { roff_nr, NULL, NULL, 0 }, /* nr */
512: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
513: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
514: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
515: { roff_insec, NULL, NULL, 0 }, /* nx */
516: { roff_insec, NULL, NULL, 0 }, /* open */
517: { roff_insec, NULL, NULL, 0 }, /* opena */
518: { roff_line_ignore, NULL, NULL, 0 }, /* os */
519: { roff_unsupp, NULL, NULL, 0 }, /* output */
520: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
521: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
522: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
523: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
524: { roff_insec, NULL, NULL, 0 }, /* pi */
525: { roff_unsupp, NULL, NULL, 0 }, /* PI */
526: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
527: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
528: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
529: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
530: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
531: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
532: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
533: { roff_insec, NULL, NULL, 0 }, /* pso */
534: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
535: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
536: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
537: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
538: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
1.211 schwarze 539: { roff_return, NULL, NULL, 0 }, /* return */
1.167 schwarze 540: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
541: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
542: { roff_rm, NULL, NULL, 0 }, /* rm */
1.178 schwarze 543: { roff_rn, NULL, NULL, 0 }, /* rn */
1.167 schwarze 544: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
545: { roff_rr, NULL, NULL, 0 }, /* rr */
546: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
547: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
548: { roff_unsupp, NULL, NULL, 0 }, /* schar */
549: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
550: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
1.211 schwarze 551: { roff_shift, NULL, NULL, 0 }, /* shift */
1.167 schwarze 552: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
553: { roff_so, NULL, NULL, 0 }, /* so */
554: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
555: { roff_line_ignore, NULL, NULL, 0 }, /* special */
556: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
557: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
558: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
559: { roff_unsupp, NULL, NULL, 0 }, /* substring */
560: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
561: { roff_insec, NULL, NULL, 0 }, /* sy */
562: { roff_T_, NULL, NULL, 0 }, /* T& */
563: { roff_unsupp, NULL, NULL, 0 }, /* tc */
564: { roff_TE, NULL, NULL, 0 }, /* TE */
1.187 schwarze 565: { roff_Dd, NULL, NULL, 0 }, /* TH */
1.167 schwarze 566: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
567: { roff_unsupp, NULL, NULL, 0 }, /* tl */
568: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
569: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
570: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
571: { roff_tr, NULL, NULL, 0 }, /* tr */
572: { roff_line_ignore, NULL, NULL, 0 }, /* track */
573: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
574: { roff_insec, NULL, NULL, 0 }, /* trf */
575: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
576: { roff_unsupp, NULL, NULL, 0 }, /* trin */
577: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
578: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
579: { roff_TS, NULL, NULL, 0 }, /* TS */
580: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
581: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
582: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
583: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
584: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
585: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
586: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
587: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
588: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
589: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
590: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
591: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
592: { roff_unsupp, NULL, NULL, 0 }, /* wh */
1.212 schwarze 593: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /*while*/
1.167 schwarze 594: { roff_insec, NULL, NULL, 0 }, /* write */
595: { roff_insec, NULL, NULL, 0 }, /* writec */
596: { roff_insec, NULL, NULL, 0 }, /* writem */
597: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
598: { roff_cblock, NULL, NULL, 0 }, /* . */
1.178 schwarze 599: { roff_renamed, NULL, NULL, 0 },
1.167 schwarze 600: { roff_userdef, NULL, NULL, 0 }
1.1 schwarze 601: };
602:
1.37 schwarze 603: /* Array of injected predefined strings. */
604: #define PREDEFS_MAX 38
605: static const struct predef predefs[PREDEFS_MAX] = {
606: #include "predefs.in"
607: };
608:
1.177 schwarze 609: static int roffce_lines; /* number of input lines to center */
610: static struct roff_node *roffce_node; /* active request */
1.51 schwarze 611: static int roffit_lines; /* number of lines to delay */
612: static char *roffit_macro; /* nil-terminated macro line */
613:
1.80 schwarze 614:
1.138 schwarze 615: /* --- request table ------------------------------------------------------ */
616:
1.167 schwarze 617: struct ohash *
618: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.3 schwarze 619: {
1.167 schwarze 620: struct ohash *htab;
621: struct roffreq *req;
622: enum roff_tok tok;
623: size_t sz;
624: unsigned int slot;
1.3 schwarze 625:
1.167 schwarze 626: htab = mandoc_malloc(sizeof(*htab));
627: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.3 schwarze 628:
1.167 schwarze 629: for (tok = mintok; tok < maxtok; tok++) {
1.168 schwarze 630: if (roff_name[tok] == NULL)
631: continue;
1.167 schwarze 632: sz = strlen(roff_name[tok]);
633: req = mandoc_malloc(sizeof(*req) + sz + 1);
634: req->tok = tok;
635: memcpy(req->name, roff_name[tok], sz + 1);
636: slot = ohash_qlookup(htab, req->name);
637: ohash_insert(htab, slot, req);
1.3 schwarze 638: }
1.167 schwarze 639: return htab;
1.3 schwarze 640: }
641:
1.167 schwarze 642: void
643: roffhash_free(struct ohash *htab)
1.1 schwarze 644: {
1.167 schwarze 645: struct roffreq *req;
646: unsigned int slot;
1.1 schwarze 647:
1.167 schwarze 648: if (htab == NULL)
649: return;
650: for (req = ohash_first(htab, &slot); req != NULL;
651: req = ohash_next(htab, &slot))
652: free(req);
653: ohash_delete(htab);
654: free(htab);
655: }
656:
657: enum roff_tok
658: roffhash_find(struct ohash *htab, const char *name, size_t sz)
659: {
660: struct roffreq *req;
661: const char *end;
662:
663: if (sz) {
664: end = name + sz;
665: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
666: } else
667: req = ohash_find(htab, ohash_qlookup(htab, name));
668: return req == NULL ? TOKEN_NONE : req->tok;
1.1 schwarze 669: }
670:
1.138 schwarze 671: /* --- stack of request blocks -------------------------------------------- */
672:
1.1 schwarze 673: /*
674: * Pop the current node off of the stack of roff instructions currently
675: * pending.
676: */
1.212 schwarze 677: static int
1.1 schwarze 678: roffnode_pop(struct roff *r)
679: {
680: struct roffnode *p;
1.212 schwarze 681: int inloop;
1.1 schwarze 682:
1.80 schwarze 683: p = r->last;
1.212 schwarze 684: inloop = p->tok == ROFF_while;
685: r->last = p->parent;
1.16 schwarze 686: free(p->name);
687: free(p->end);
1.1 schwarze 688: free(p);
1.212 schwarze 689: return inloop;
1.1 schwarze 690: }
691:
692: /*
693: * Push a roff node onto the instruction stack. This must later be
694: * removed with roffnode_pop().
695: */
1.11 schwarze 696: static void
1.166 schwarze 697: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.16 schwarze 698: int line, int col)
1.1 schwarze 699: {
700: struct roffnode *p;
701:
1.11 schwarze 702: p = mandoc_calloc(1, sizeof(struct roffnode));
1.1 schwarze 703: p->tok = tok;
1.16 schwarze 704: if (name)
705: p->name = mandoc_strdup(name);
1.1 schwarze 706: p->parent = r->last;
707: p->line = line;
708: p->col = col;
1.71 schwarze 709: p->rule = p->parent ? p->parent->rule : 0;
1.1 schwarze 710:
711: r->last = p;
712: }
713:
1.138 schwarze 714: /* --- roff parser state data management ---------------------------------- */
715:
1.1 schwarze 716: static void
717: roff_free1(struct roff *r)
718: {
1.49 schwarze 719: struct tbl_node *tbl;
1.42 schwarze 720: int i;
1.27 schwarze 721:
1.49 schwarze 722: while (NULL != (tbl = r->first_tbl)) {
723: r->first_tbl = tbl->next;
724: tbl_free(tbl);
1.27 schwarze 725: }
726: r->first_tbl = r->last_tbl = r->tbl = NULL;
1.1 schwarze 727:
1.191 schwarze 728: if (r->last_eqn != NULL)
729: eqn_free(r->last_eqn);
730: r->last_eqn = r->eqn = NULL;
1.32 schwarze 731:
1.211 schwarze 732: while (r->mstackpos >= 0)
733: roff_userret(r);
734:
1.1 schwarze 735: while (r->last)
736: roffnode_pop(r);
1.27 schwarze 737:
1.96 schwarze 738: free (r->rstack);
739: r->rstack = NULL;
740: r->rstacksz = 0;
741: r->rstackpos = -1;
742:
743: roff_freereg(r->regtab);
744: r->regtab = NULL;
745:
1.42 schwarze 746: roff_freestr(r->strtab);
1.178 schwarze 747: roff_freestr(r->rentab);
1.42 schwarze 748: roff_freestr(r->xmbtab);
1.178 schwarze 749: r->strtab = r->rentab = r->xmbtab = NULL;
1.42 schwarze 750:
751: if (r->xtab)
752: for (i = 0; i < 128; i++)
753: free(r->xtab[i].p);
754: free(r->xtab);
755: r->xtab = NULL;
1.1 schwarze 756: }
757:
758: void
759: roff_reset(struct roff *r)
760: {
761: roff_free1(r);
1.99 schwarze 762: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.175 schwarze 763: r->control = '\0';
764: r->escape = '\\';
1.179 schwarze 765: roffce_lines = 0;
766: roffce_node = NULL;
767: roffit_lines = 0;
768: roffit_macro = NULL;
1.1 schwarze 769: }
770:
771: void
772: roff_free(struct roff *r)
773: {
1.211 schwarze 774: int i;
775:
1.1 schwarze 776: roff_free1(r);
1.211 schwarze 777: for (i = 0; i < r->mstacksz; i++)
778: free(r->mstack[i].argv);
779: free(r->mstack);
1.167 schwarze 780: roffhash_free(r->reqtab);
1.1 schwarze 781: free(r);
782: }
783:
784: struct roff *
1.151 schwarze 785: roff_alloc(struct mparse *parse, int options)
1.1 schwarze 786: {
787: struct roff *r;
788:
1.11 schwarze 789: r = mandoc_calloc(1, sizeof(struct roff));
1.35 schwarze 790: r->parse = parse;
1.200 schwarze 791: r->reqtab = roffhash_alloc(0, ROFF_RENAMED);
1.72 schwarze 792: r->options = options;
1.99 schwarze 793: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.211 schwarze 794: r->mstackpos = -1;
1.2 schwarze 795: r->rstackpos = -1;
1.175 schwarze 796: r->escape = '\\';
1.149 schwarze 797: return r;
1.137 schwarze 798: }
799:
1.138 schwarze 800: /* --- syntax tree state data management ---------------------------------- */
801:
1.137 schwarze 802: static void
803: roff_man_free1(struct roff_man *man)
804: {
805:
1.138 schwarze 806: if (man->first != NULL)
807: roff_node_delete(man, man->first);
1.137 schwarze 808: free(man->meta.msec);
809: free(man->meta.vol);
810: free(man->meta.os);
811: free(man->meta.arch);
812: free(man->meta.title);
813: free(man->meta.name);
814: free(man->meta.date);
815: }
816:
817: static void
818: roff_man_alloc1(struct roff_man *man)
819: {
820:
821: memset(&man->meta, 0, sizeof(man->meta));
822: man->first = mandoc_calloc(1, sizeof(*man->first));
823: man->first->type = ROFFT_ROOT;
824: man->last = man->first;
825: man->last_es = NULL;
826: man->flags = 0;
827: man->macroset = MACROSET_NONE;
828: man->lastsec = man->lastnamed = SEC_NONE;
829: man->next = ROFF_NEXT_CHILD;
830: }
831:
832: void
833: roff_man_reset(struct roff_man *man)
834: {
835:
836: roff_man_free1(man);
837: roff_man_alloc1(man);
838: }
839:
840: void
841: roff_man_free(struct roff_man *man)
842: {
843:
844: roff_man_free1(man);
845: free(man);
846: }
847:
848: struct roff_man *
849: roff_man_alloc(struct roff *roff, struct mparse *parse,
1.188 schwarze 850: const char *os_s, int quick)
1.137 schwarze 851: {
852: struct roff_man *man;
853:
854: man = mandoc_calloc(1, sizeof(*man));
855: man->parse = parse;
856: man->roff = roff;
1.188 schwarze 857: man->os_s = os_s;
1.137 schwarze 858: man->quick = quick;
859: roff_man_alloc1(man);
1.168 schwarze 860: roff->man = man;
1.149 schwarze 861: return man;
1.1 schwarze 862: }
863:
1.138 schwarze 864: /* --- syntax tree handling ----------------------------------------------- */
865:
866: struct roff_node *
867: roff_node_alloc(struct roff_man *man, int line, int pos,
868: enum roff_type type, int tok)
869: {
870: struct roff_node *n;
871:
872: n = mandoc_calloc(1, sizeof(*n));
873: n->line = line;
874: n->pos = pos;
875: n->tok = tok;
876: n->type = type;
877: n->sec = man->lastsec;
878:
879: if (man->flags & MDOC_SYNOPSIS)
1.157 schwarze 880: n->flags |= NODE_SYNPRETTY;
1.138 schwarze 881: else
1.157 schwarze 882: n->flags &= ~NODE_SYNPRETTY;
1.138 schwarze 883: if (man->flags & MDOC_NEWLINE)
1.157 schwarze 884: n->flags |= NODE_LINE;
1.138 schwarze 885: man->flags &= ~MDOC_NEWLINE;
886:
1.149 schwarze 887: return n;
1.138 schwarze 888: }
889:
890: void
891: roff_node_append(struct roff_man *man, struct roff_node *n)
892: {
893:
894: switch (man->next) {
895: case ROFF_NEXT_SIBLING:
1.153 schwarze 896: if (man->last->next != NULL) {
897: n->next = man->last->next;
898: man->last->next->prev = n;
899: } else
900: man->last->parent->last = n;
1.138 schwarze 901: man->last->next = n;
902: n->prev = man->last;
903: n->parent = man->last->parent;
904: break;
905: case ROFF_NEXT_CHILD:
1.159 schwarze 906: if (man->last->child != NULL) {
907: n->next = man->last->child;
908: man->last->child->prev = n;
909: } else
910: man->last->last = n;
1.138 schwarze 911: man->last->child = n;
912: n->parent = man->last;
913: break;
914: default:
915: abort();
916: }
1.154 schwarze 917: man->last = n;
1.138 schwarze 918:
919: switch (n->type) {
920: case ROFFT_HEAD:
921: n->parent->head = n;
922: break;
923: case ROFFT_BODY:
1.154 schwarze 924: if (n->end != ENDBODY_NOT)
925: return;
1.138 schwarze 926: n->parent->body = n;
927: break;
928: case ROFFT_TAIL:
929: n->parent->tail = n;
930: break;
931: default:
1.154 schwarze 932: return;
1.138 schwarze 933: }
1.154 schwarze 934:
935: /*
936: * Copy over the normalised-data pointer of our parent. Not
937: * everybody has one, but copying a null pointer is fine.
938: */
939:
940: n->norm = n->parent->norm;
941: assert(n->parent->type == ROFFT_BLOCK);
1.138 schwarze 942: }
943:
1.139 schwarze 944: void
945: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
946: {
947: struct roff_node *n;
948:
949: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
950: n->string = roff_strdup(man->roff, word);
951: roff_node_append(man, n);
1.158 schwarze 952: n->flags |= NODE_VALID | NODE_ENDED;
1.139 schwarze 953: man->next = ROFF_NEXT_SIBLING;
954: }
955:
956: void
957: roff_word_append(struct roff_man *man, const char *word)
958: {
959: struct roff_node *n;
960: char *addstr, *newstr;
961:
962: n = man->last;
963: addstr = roff_strdup(man->roff, word);
964: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
965: free(addstr);
966: free(n->string);
967: n->string = newstr;
968: man->next = ROFF_NEXT_SIBLING;
1.140 schwarze 969: }
970:
971: void
972: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
973: {
974: struct roff_node *n;
975:
976: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
977: roff_node_append(man, n);
978: man->next = ROFF_NEXT_CHILD;
979: }
980:
981: struct roff_node *
982: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
983: {
984: struct roff_node *n;
985:
986: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
987: roff_node_append(man, n);
988: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 989: return n;
1.139 schwarze 990: }
991:
1.138 schwarze 992: struct roff_node *
993: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
994: {
995: struct roff_node *n;
996:
997: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
998: roff_node_append(man, n);
999: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 1000: return n;
1.138 schwarze 1001: }
1002:
1003: struct roff_node *
1004: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1005: {
1006: struct roff_node *n;
1007:
1008: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1009: roff_node_append(man, n);
1010: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 1011: return n;
1.139 schwarze 1012: }
1013:
1.193 schwarze 1014: static void
1015: roff_addtbl(struct roff_man *man, struct tbl_node *tbl)
1.139 schwarze 1016: {
1017: struct roff_node *n;
1.193 schwarze 1018: const struct tbl_span *span;
1.139 schwarze 1019:
1020: if (man->macroset == MACROSET_MAN)
1.174 schwarze 1021: man_breakscope(man, ROFF_TS);
1.193 schwarze 1022: while ((span = tbl_span(tbl)) != NULL) {
1023: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
1024: n->span = span;
1025: roff_node_append(man, n);
1026: n->flags |= NODE_VALID | NODE_ENDED;
1027: man->next = ROFF_NEXT_SIBLING;
1028: }
1.138 schwarze 1029: }
1030:
1031: void
1032: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1033: {
1034:
1035: /* Adjust siblings. */
1036:
1037: if (n->prev)
1038: n->prev->next = n->next;
1039: if (n->next)
1040: n->next->prev = n->prev;
1041:
1042: /* Adjust parent. */
1043:
1044: if (n->parent != NULL) {
1045: if (n->parent->child == n)
1046: n->parent->child = n->next;
1047: if (n->parent->last == n)
1048: n->parent->last = n->prev;
1049: }
1050:
1051: /* Adjust parse point. */
1052:
1053: if (man == NULL)
1054: return;
1055: if (man->last == n) {
1056: if (n->prev == NULL) {
1057: man->last = n->parent;
1058: man->next = ROFF_NEXT_CHILD;
1059: } else {
1060: man->last = n->prev;
1061: man->next = ROFF_NEXT_SIBLING;
1062: }
1063: }
1064: if (man->first == n)
1065: man->first = NULL;
1.216 schwarze 1066: }
1067:
1068: void
1069: roff_node_relink(struct roff_man *man, struct roff_node *n)
1070: {
1071: roff_node_unlink(man, n);
1072: n->prev = n->next = NULL;
1073: roff_node_append(man, n);
1.138 schwarze 1074: }
1075:
1076: void
1077: roff_node_free(struct roff_node *n)
1078: {
1079:
1080: if (n->args != NULL)
1081: mdoc_argv_free(n->args);
1082: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1083: free(n->norm);
1.191 schwarze 1084: if (n->eqn != NULL)
1085: eqn_box_free(n->eqn);
1.138 schwarze 1086: free(n->string);
1087: free(n);
1088: }
1089:
1090: void
1091: roff_node_delete(struct roff_man *man, struct roff_node *n)
1092: {
1093:
1094: while (n->child != NULL)
1095: roff_node_delete(man, n->child);
1096: roff_node_unlink(man, n);
1097: roff_node_free(n);
1.141 schwarze 1098: }
1099:
1100: void
1101: deroff(char **dest, const struct roff_node *n)
1102: {
1103: char *cp;
1104: size_t sz;
1105:
1106: if (n->type != ROFFT_TEXT) {
1107: for (n = n->child; n != NULL; n = n->next)
1108: deroff(dest, n);
1109: return;
1110: }
1111:
1.160 schwarze 1112: /* Skip leading whitespace. */
1.141 schwarze 1113:
1.160 schwarze 1114: for (cp = n->string; *cp != '\0'; cp++) {
1.161 schwarze 1115: if (cp[0] == '\\' && cp[1] != '\0' &&
1116: strchr(" %&0^|~", cp[1]) != NULL)
1.141 schwarze 1117: cp++;
1.160 schwarze 1118: else if ( ! isspace((unsigned char)*cp))
1.141 schwarze 1119: break;
1120: }
1121:
1.161 schwarze 1122: /* Skip trailing backslash. */
1123:
1124: sz = strlen(cp);
1.162 schwarze 1125: if (sz > 0 && cp[sz - 1] == '\\')
1.161 schwarze 1126: sz--;
1127:
1.141 schwarze 1128: /* Skip trailing whitespace. */
1129:
1.161 schwarze 1130: for (; sz; sz--)
1.141 schwarze 1131: if ( ! isspace((unsigned char)cp[sz-1]))
1132: break;
1133:
1134: /* Skip empty strings. */
1135:
1136: if (sz == 0)
1137: return;
1138:
1139: if (*dest == NULL) {
1140: *dest = mandoc_strndup(cp, sz);
1141: return;
1142: }
1143:
1144: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1145: free(*dest);
1146: *dest = cp;
1.138 schwarze 1147: }
1148:
1149: /* --- main functions of the roff parser ---------------------------------- */
1150:
1.8 schwarze 1151: /*
1.79 schwarze 1152: * In the current line, expand escape sequences that tend to get
1153: * used in numerical expressions and conditional requests.
1154: * Also check the syntax of the remaining escape sequences.
1.8 schwarze 1155: */
1.212 schwarze 1156: static int
1.110 schwarze 1157: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.8 schwarze 1158: {
1.211 schwarze 1159: struct mctx *ctx; /* current macro call context */
1.81 schwarze 1160: char ubuf[24]; /* buffer to print the number */
1.200 schwarze 1161: struct roff_node *n; /* used for header comments */
1.78 schwarze 1162: const char *start; /* start of the string to process */
1.82 schwarze 1163: char *stesc; /* start of an escape sequence ('\\') */
1.200 schwarze 1164: char *ep; /* end of comment string */
1.23 schwarze 1165: const char *stnam; /* start of the name, after "[(*" */
1166: const char *cp; /* end of the name, e.g. before ']' */
1167: const char *res; /* the string to be substituted */
1.110 schwarze 1168: char *nbuf; /* new buffer to copy buf->buf to */
1.53 schwarze 1169: size_t maxl; /* expected length of the escape name */
1170: size_t naml; /* actual length of the escape name */
1.211 schwarze 1171: size_t asz; /* length of the replacement */
1172: size_t rsz; /* length of the rest of the string */
1.109 schwarze 1173: enum mandoc_esc esc; /* type of the escape sequence */
1174: int inaml; /* length returned from mandoc_escape() */
1.53 schwarze 1175: int expand_count; /* to avoid infinite loops */
1.79 schwarze 1176: int npos; /* position in numeric expression */
1.91 schwarze 1177: int arg_complete; /* argument not interrupted by eol */
1.211 schwarze 1178: int quote_args; /* true for \\$@, false for \\$* */
1.175 schwarze 1179: int done; /* no more input available */
1.187 schwarze 1180: int deftype; /* type of definition to paste */
1.195 schwarze 1181: int rcsid; /* kind of RCS id seen */
1.199 schwarze 1182: char sign; /* increment number register */
1.79 schwarze 1183: char term; /* character terminating the escape */
1.8 schwarze 1184:
1.175 schwarze 1185: /* Search forward for comments. */
1186:
1187: done = 0;
1188: start = buf->buf + pos;
1189: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1190: if (stesc[0] != r->escape || stesc[1] == '\0')
1191: continue;
1192: stesc++;
1193: if (*stesc != '"' && *stesc != '#')
1194: continue;
1.185 schwarze 1195:
1196: /* Comment found, look for RCS id. */
1197:
1.195 schwarze 1198: rcsid = 0;
1.185 schwarze 1199: if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
1.195 schwarze 1200: rcsid = 1 << MANDOC_OS_OPENBSD;
1.185 schwarze 1201: cp += 8;
1202: } else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
1.195 schwarze 1203: rcsid = 1 << MANDOC_OS_NETBSD;
1.185 schwarze 1204: cp += 7;
1205: }
1206: if (cp != NULL &&
1207: isalnum((unsigned char)*cp) == 0 &&
1.186 schwarze 1208: strchr(cp, '$') != NULL) {
1.195 schwarze 1209: if (r->man->meta.rcsids & rcsid)
1.186 schwarze 1210: mandoc_msg(MANDOCERR_RCS_REP, r->parse,
1211: ln, stesc + 1 - buf->buf, stesc + 1);
1.195 schwarze 1212: r->man->meta.rcsids |= rcsid;
1.186 schwarze 1213: }
1.185 schwarze 1214:
1215: /* Handle trailing whitespace. */
1216:
1.200 schwarze 1217: ep = strchr(stesc--, '\0') - 1;
1218: if (*ep == '\n') {
1.175 schwarze 1219: done = 1;
1.200 schwarze 1220: ep--;
1.175 schwarze 1221: }
1.200 schwarze 1222: if (*ep == ' ' || *ep == '\t')
1.175 schwarze 1223: mandoc_msg(MANDOCERR_SPACE_EOL, r->parse,
1.200 schwarze 1224: ln, ep - buf->buf, NULL);
1225:
1226: /*
1227: * Save comments preceding the title macro
1228: * in the syntax tree.
1229: */
1230:
1231: if (r->format == 0) {
1232: while (*ep == ' ' || *ep == '\t')
1233: ep--;
1234: ep[1] = '\0';
1235: n = roff_node_alloc(r->man,
1236: ln, stesc + 1 - buf->buf,
1237: ROFFT_COMMENT, TOKEN_NONE);
1238: n->string = mandoc_strdup(stesc + 2);
1239: roff_node_append(r->man, n);
1240: n->flags |= NODE_VALID | NODE_ENDED;
1241: r->man->next = ROFF_NEXT_SIBLING;
1242: }
1243:
1.206 schwarze 1244: /* Line continuation with comment. */
1245:
1246: if (stesc[1] == '#') {
1247: *stesc = '\0';
1.212 schwarze 1248: return ROFF_IGN | ROFF_APPEND;
1.206 schwarze 1249: }
1250:
1251: /* Discard normal comments. */
1.200 schwarze 1252:
1.207 schwarze 1253: while (stesc > start && stesc[-1] == ' ' &&
1254: (stesc == start + 1 || stesc[-2] != '\\'))
1.175 schwarze 1255: stesc--;
1256: *stesc = '\0';
1257: break;
1258: }
1259: if (stesc == start)
1260: return ROFF_CONT;
1261: stesc--;
1262:
1263: /* Notice the end of the input. */
1264:
1265: if (*stesc == '\n') {
1266: *stesc-- = '\0';
1267: done = 1;
1268: }
1269:
1.43 schwarze 1270: expand_count = 0;
1.175 schwarze 1271: while (stesc >= start) {
1.43 schwarze 1272:
1.78 schwarze 1273: /* Search backwards for the next backslash. */
1274:
1.175 schwarze 1275: if (*stesc != r->escape) {
1276: if (*stesc == '\\') {
1277: *stesc = '\0';
1278: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1279: buf->buf, stesc + 1) + 1;
1280: start = nbuf + pos;
1281: stesc = nbuf + (stesc - buf->buf);
1282: free(buf->buf);
1283: buf->buf = nbuf;
1284: }
1285: stesc--;
1.78 schwarze 1286: continue;
1.175 schwarze 1287: }
1.78 schwarze 1288:
1289: /* If it is escaped, skip it. */
1290:
1291: for (cp = stesc - 1; cp >= start; cp--)
1.175 schwarze 1292: if (*cp != r->escape)
1.78 schwarze 1293: break;
1294:
1.110 schwarze 1295: if ((stesc - cp) % 2 == 0) {
1.175 schwarze 1296: while (stesc > cp)
1297: *stesc-- = '\\';
1.78 schwarze 1298: continue;
1.175 schwarze 1299: } else if (stesc[1] != '\0') {
1300: *stesc = '\\';
1301: } else {
1302: *stesc-- = '\0';
1303: if (done)
1304: continue;
1305: else
1.212 schwarze 1306: return ROFF_IGN | ROFF_APPEND;
1.78 schwarze 1307: }
1.23 schwarze 1308:
1.79 schwarze 1309: /* Decide whether to expand or to check only. */
1.23 schwarze 1310:
1.79 schwarze 1311: term = '\0';
1.78 schwarze 1312: cp = stesc + 1;
1.53 schwarze 1313: switch (*cp) {
1.80 schwarze 1314: case '*':
1.211 schwarze 1315: case '$':
1.53 schwarze 1316: res = NULL;
1317: break;
1.80 schwarze 1318: case 'B':
1319: case 'w':
1.79 schwarze 1320: term = cp[1];
1321: /* FALLTHROUGH */
1.80 schwarze 1322: case 'n':
1.199 schwarze 1323: sign = cp[1];
1324: if (sign == '+' || sign == '-')
1325: cp++;
1.53 schwarze 1326: res = ubuf;
1327: break;
1328: default:
1.109 schwarze 1329: esc = mandoc_escape(&cp, &stnam, &inaml);
1330: if (esc == ESCAPE_ERROR ||
1331: (esc == ESCAPE_SPECIAL &&
1.151 schwarze 1332: mchars_spec2cp(stnam, inaml) < 0))
1.92 schwarze 1333: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.110 schwarze 1334: r->parse, ln, (int)(stesc - buf->buf),
1.92 schwarze 1335: "%.*s", (int)(cp - stesc), stesc);
1.175 schwarze 1336: stesc--;
1.78 schwarze 1337: continue;
1.42 schwarze 1338: }
1339:
1.78 schwarze 1340: if (EXPAND_LIMIT < ++expand_count) {
1341: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.110 schwarze 1342: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1343: return ROFF_IGN;
1.78 schwarze 1344: }
1.23 schwarze 1345:
1346: /*
1347: * The third character decides the length
1.53 schwarze 1348: * of the name of the string or register.
1.23 schwarze 1349: * Save a pointer to the name.
1350: */
1351:
1.110 schwarze 1352: if (term == '\0') {
1.79 schwarze 1353: switch (*++cp) {
1.80 schwarze 1354: case '\0':
1.79 schwarze 1355: maxl = 0;
1356: break;
1.80 schwarze 1357: case '(':
1.79 schwarze 1358: cp++;
1359: maxl = 2;
1360: break;
1.80 schwarze 1361: case '[':
1.79 schwarze 1362: cp++;
1363: term = ']';
1364: maxl = 0;
1365: break;
1366: default:
1367: maxl = 1;
1368: break;
1369: }
1370: } else {
1371: cp += 2;
1.8 schwarze 1372: maxl = 0;
1373: }
1.23 schwarze 1374: stnam = cp;
1.8 schwarze 1375:
1.23 schwarze 1376: /* Advance to the end of the name. */
1.8 schwarze 1377:
1.125 schwarze 1378: naml = 0;
1.91 schwarze 1379: arg_complete = 1;
1.125 schwarze 1380: while (maxl == 0 || naml < maxl) {
1.110 schwarze 1381: if (*cp == '\0') {
1.92 schwarze 1382: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 1383: ln, (int)(stesc - buf->buf), stesc);
1.91 schwarze 1384: arg_complete = 0;
1.79 schwarze 1385: break;
1.42 schwarze 1386: }
1.110 schwarze 1387: if (maxl == 0 && *cp == term) {
1.79 schwarze 1388: cp++;
1.125 schwarze 1389: break;
1390: }
1391: if (*cp++ != '\\' || stesc[1] != 'w') {
1392: naml++;
1393: continue;
1394: }
1395: switch (mandoc_escape(&cp, NULL, NULL)) {
1396: case ESCAPE_SPECIAL:
1397: case ESCAPE_UNICODE:
1398: case ESCAPE_NUMBERED:
1399: case ESCAPE_OVERSTRIKE:
1400: naml++;
1401: break;
1402: default:
1.8 schwarze 1403: break;
1.79 schwarze 1404: }
1.8 schwarze 1405: }
1406:
1.23 schwarze 1407: /*
1408: * Retrieve the replacement string; if it is
1409: * undefined, resume searching for escapes.
1410: */
1411:
1.79 schwarze 1412: switch (stesc[1]) {
1.80 schwarze 1413: case '*':
1.187 schwarze 1414: if (arg_complete) {
1415: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1416: res = roff_getstrn(r, stnam, naml, &deftype);
1.203 schwarze 1417:
1418: /*
1419: * If not overriden, let \*(.T
1420: * through to the formatters.
1421: */
1422:
1423: if (res == NULL && naml == 2 &&
1424: stnam[0] == '.' && stnam[1] == 'T') {
1425: roff_setstrn(&r->strtab,
1426: ".T", 2, NULL, 0, 0);
1427: stesc--;
1428: continue;
1429: }
1.187 schwarze 1430: }
1.79 schwarze 1431: break;
1.211 schwarze 1432: case '$':
1433: if (r->mstackpos < 0) {
1434: mandoc_vmsg(MANDOCERR_ARG_UNDEF,
1435: r->parse, ln, (int)(stesc - buf->buf),
1436: "%.3s", stesc);
1437: break;
1438: }
1439: ctx = r->mstack + r->mstackpos;
1440: npos = stesc[2] - '1';
1441: if (npos >= 0 && npos <= 8) {
1442: res = npos < ctx->argc ?
1443: ctx->argv[npos] : "";
1444: break;
1445: }
1446: if (stesc[2] == '*')
1447: quote_args = 0;
1448: else if (stesc[2] == '@')
1449: quote_args = 1;
1450: else {
1451: mandoc_vmsg(MANDOCERR_ARG_NONUM,
1452: r->parse, ln, (int)(stesc - buf->buf),
1453: "%.3s", stesc);
1454: break;
1455: }
1456: asz = 0;
1457: for (npos = 0; npos < ctx->argc; npos++) {
1458: if (npos)
1459: asz++; /* blank */
1460: if (quote_args)
1461: asz += 2; /* quotes */
1462: asz += strlen(ctx->argv[npos]);
1463: }
1464: if (asz != 3) {
1465: rsz = buf->sz - (stesc - buf->buf) - 3;
1466: if (asz < 3)
1467: memmove(stesc + asz, stesc + 3, rsz);
1468: buf->sz += asz - 3;
1469: nbuf = mandoc_realloc(buf->buf, buf->sz);
1470: start = nbuf + pos;
1471: stesc = nbuf + (stesc - buf->buf);
1472: buf->buf = nbuf;
1473: if (asz > 3)
1474: memmove(stesc + asz, stesc + 3, rsz);
1475: }
1476: for (npos = 0; npos < ctx->argc; npos++) {
1477: if (npos)
1478: *stesc++ = ' ';
1479: if (quote_args)
1480: *stesc++ = '"';
1481: cp = ctx->argv[npos];
1482: while (*cp != '\0')
1483: *stesc++ = *cp++;
1484: if (quote_args)
1485: *stesc++ = '"';
1486: }
1487: continue;
1.80 schwarze 1488: case 'B':
1.79 schwarze 1489: npos = 0;
1.91 schwarze 1490: ubuf[0] = arg_complete &&
1.133 schwarze 1491: roff_evalnum(r, ln, stnam, &npos,
1492: NULL, ROFFNUM_SCALE) &&
1.91 schwarze 1493: stnam + npos + 1 == cp ? '1' : '0';
1.79 schwarze 1494: ubuf[1] = '\0';
1495: break;
1.80 schwarze 1496: case 'n':
1.91 schwarze 1497: if (arg_complete)
1498: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.199 schwarze 1499: roff_getregn(r, stnam, naml, sign));
1.91 schwarze 1500: else
1501: ubuf[0] = '\0';
1.79 schwarze 1502: break;
1.80 schwarze 1503: case 'w':
1.91 schwarze 1504: /* use even incomplete args */
1.81 schwarze 1505: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.79 schwarze 1506: 24 * (int)naml);
1507: break;
1508: }
1.8 schwarze 1509:
1.110 schwarze 1510: if (res == NULL) {
1.211 schwarze 1511: if (stesc[1] == '*')
1512: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1513: r->parse, ln, (int)(stesc - buf->buf),
1514: "%.*s", (int)naml, stnam);
1.37 schwarze 1515: res = "";
1.118 schwarze 1516: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1517: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1518: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1519: return ROFF_IGN;
1.8 schwarze 1520: }
1521:
1.23 schwarze 1522: /* Replace the escape sequence by the string. */
1523:
1.82 schwarze 1524: *stesc = '\0';
1.110 schwarze 1525: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1526: buf->buf, res, cp) + 1;
1.8 schwarze 1527:
1.78 schwarze 1528: /* Prepare for the next replacement. */
1.8 schwarze 1529:
1.78 schwarze 1530: start = nbuf + pos;
1.110 schwarze 1531: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1532: free(buf->buf);
1533: buf->buf = nbuf;
1.42 schwarze 1534: }
1.149 schwarze 1535: return ROFF_CONT;
1.42 schwarze 1536: }
1537:
1538: /*
1.147 schwarze 1539: * Process text streams.
1.42 schwarze 1540: */
1.212 schwarze 1541: static int
1.177 schwarze 1542: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.42 schwarze 1543: {
1544: size_t sz;
1545: const char *start;
1.51 schwarze 1546: char *p;
1547: int isz;
1.42 schwarze 1548: enum mandoc_esc esc;
1549:
1.147 schwarze 1550: /* Spring the input line trap. */
1551:
1552: if (roffit_lines == 1) {
1553: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1554: free(buf->buf);
1555: buf->buf = p;
1556: buf->sz = isz + 1;
1557: *offs = 0;
1558: free(roffit_macro);
1559: roffit_lines = 0;
1.149 schwarze 1560: return ROFF_REPARSE;
1.147 schwarze 1561: } else if (roffit_lines > 1)
1562: --roffit_lines;
1563:
1.177 schwarze 1564: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1565: if (roffce_lines < 1) {
1566: r->man->last = roffce_node;
1567: r->man->next = ROFF_NEXT_SIBLING;
1568: roffce_lines = 0;
1569: roffce_node = NULL;
1570: } else
1571: roffce_lines--;
1572: }
1573:
1.147 schwarze 1574: /* Convert all breakable hyphens into ASCII_HYPH. */
1575:
1.110 schwarze 1576: start = p = buf->buf + pos;
1.42 schwarze 1577:
1.110 schwarze 1578: while (*p != '\0') {
1.42 schwarze 1579: sz = strcspn(p, "-\\");
1580: p += sz;
1581:
1.110 schwarze 1582: if (*p == '\0')
1.42 schwarze 1583: break;
1584:
1.110 schwarze 1585: if (*p == '\\') {
1.42 schwarze 1586: /* Skip over escapes. */
1587: p++;
1.62 schwarze 1588: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.110 schwarze 1589: if (esc == ESCAPE_ERROR)
1.42 schwarze 1590: break;
1.136 schwarze 1591: while (*p == '-')
1592: p++;
1.42 schwarze 1593: continue;
1594: } else if (p == start) {
1595: p++;
1596: continue;
1597: }
1598:
1.44 schwarze 1599: if (isalpha((unsigned char)p[-1]) &&
1600: isalpha((unsigned char)p[1]))
1.42 schwarze 1601: *p = ASCII_HYPH;
1602: p++;
1.8 schwarze 1603: }
1.149 schwarze 1604: return ROFF_CONT;
1.8 schwarze 1605: }
1606:
1.212 schwarze 1607: int
1.110 schwarze 1608: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.1 schwarze 1609: {
1.166 schwarze 1610: enum roff_tok t;
1.212 schwarze 1611: int e;
1.110 schwarze 1612: int pos; /* parse point */
1.115 schwarze 1613: int spos; /* saved parse point for messages */
1.110 schwarze 1614: int ppos; /* original offset in buf->buf */
1615: int ctl; /* macro line (boolean) */
1616:
1617: ppos = pos = *offs;
1.1 schwarze 1618:
1.102 schwarze 1619: /* Handle in-line equation delimiters. */
1620:
1.108 schwarze 1621: if (r->tbl == NULL &&
1622: r->last_eqn != NULL && r->last_eqn->delim &&
1.102 schwarze 1623: (r->eqn == NULL || r->eqn_inline)) {
1.110 schwarze 1624: e = roff_eqndelim(r, buf, pos);
1.102 schwarze 1625: if (e == ROFF_REPARSE)
1.149 schwarze 1626: return e;
1.102 schwarze 1627: assert(e == ROFF_CONT);
1628: }
1629:
1630: /* Expand some escape sequences. */
1.8 schwarze 1631:
1.110 schwarze 1632: e = roff_res(r, buf, ln, pos);
1.212 schwarze 1633: if ((e & ROFF_MASK) == ROFF_IGN)
1.149 schwarze 1634: return e;
1.110 schwarze 1635: assert(e == ROFF_CONT);
1.8 schwarze 1636:
1.110 schwarze 1637: ctl = roff_getcontrol(r, buf->buf, &pos);
1.35 schwarze 1638:
1.8 schwarze 1639: /*
1.2 schwarze 1640: * First, if a scope is open and we're not a macro, pass the
1.124 schwarze 1641: * text through the macro's filter.
1642: * Equations process all content themselves.
1643: * Tables process almost all content themselves, but we want
1644: * to warn about macros before passing it there.
1.2 schwarze 1645: */
1646:
1.124 schwarze 1647: if (r->last != NULL && ! ctl) {
1.2 schwarze 1648: t = r->last->tok;
1.110 schwarze 1649: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.212 schwarze 1650: if ((e & ROFF_MASK) == ROFF_IGN)
1.149 schwarze 1651: return e;
1.212 schwarze 1652: e &= ~ROFF_MASK;
1653: } else
1654: e = ROFF_IGN;
1.191 schwarze 1655: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1656: eqn_read(r->eqn, buf->buf + ppos);
1.212 schwarze 1657: return e;
1.191 schwarze 1658: }
1.193 schwarze 1659: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1660: tbl_read(r->tbl, ln, buf->buf, ppos);
1661: roff_addtbl(r->man, r->tbl);
1.212 schwarze 1662: return e;
1.193 schwarze 1663: }
1.124 schwarze 1664: if ( ! ctl)
1.212 schwarze 1665: return roff_parsetext(r, buf, pos, offs) | e;
1.100 schwarze 1666:
1667: /* Skip empty request lines. */
1668:
1.110 schwarze 1669: if (buf->buf[pos] == '"') {
1.100 schwarze 1670: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1671: ln, pos, NULL);
1.149 schwarze 1672: return ROFF_IGN;
1.110 schwarze 1673: } else if (buf->buf[pos] == '\0')
1.149 schwarze 1674: return ROFF_IGN;
1.2 schwarze 1675:
1676: /*
1677: * If a scope is open, go to the child handler for that macro,
1678: * as it may want to preprocess before doing anything with it.
1.32 schwarze 1679: * Don't do so if an equation is open.
1.2 schwarze 1680: */
1681:
1682: if (r->last) {
1.1 schwarze 1683: t = r->last->tok;
1.149 schwarze 1684: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1685: }
1686:
1.115 schwarze 1687: /* No scope is open. This is a new request or macro. */
1688:
1689: spos = pos;
1690: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1691:
1692: /* Tables ignore most macros. */
1693:
1.180 schwarze 1694: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.181 schwarze 1695: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.115 schwarze 1696: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1697: ln, pos, buf->buf + spos);
1.180 schwarze 1698: if (t != TOKEN_NONE)
1.149 schwarze 1699: return ROFF_IGN;
1.129 schwarze 1700: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1701: pos++;
1.163 schwarze 1702: while (buf->buf[pos] == ' ')
1.129 schwarze 1703: pos++;
1.193 schwarze 1704: tbl_read(r->tbl, ln, buf->buf, pos);
1705: roff_addtbl(r->man, r->tbl);
1706: return ROFF_IGN;
1.115 schwarze 1707: }
1708:
1.177 schwarze 1709: /* For now, let high level macros abort .ce mode. */
1710:
1711: if (ctl && roffce_node != NULL &&
1.196 schwarze 1712: (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
1713: t == ROFF_TH || t == ROFF_TS)) {
1.177 schwarze 1714: r->man->last = roffce_node;
1715: r->man->next = ROFF_NEXT_SIBLING;
1716: roffce_lines = 0;
1717: roffce_node = NULL;
1718: }
1719:
1.2 schwarze 1720: /*
1.115 schwarze 1721: * This is neither a roff request nor a user-defined macro.
1722: * Let the standard macro set parsers handle it.
1.2 schwarze 1723: */
1724:
1.166 schwarze 1725: if (t == TOKEN_NONE)
1.149 schwarze 1726: return ROFF_CONT;
1.115 schwarze 1727:
1728: /* Execute a roff request or a user defined macro. */
1.1 schwarze 1729:
1.168 schwarze 1730: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.2 schwarze 1731: }
1732:
1.211 schwarze 1733: /*
1734: * Internal interface function to tell the roff parser that execution
1735: * of the current macro ended. This is required because macro
1736: * definitions usually do not end with a .return request.
1737: */
1738: void
1739: roff_userret(struct roff *r)
1740: {
1741: struct mctx *ctx;
1742: int i;
1743:
1744: assert(r->mstackpos >= 0);
1745: ctx = r->mstack + r->mstackpos;
1746: for (i = 0; i < ctx->argc; i++)
1747: free(ctx->argv[i]);
1748: ctx->argc = 0;
1749: r->mstackpos--;
1750: }
1751:
1.27 schwarze 1752: void
1.2 schwarze 1753: roff_endparse(struct roff *r)
1754: {
1.193 schwarze 1755: if (r->last != NULL)
1.94 schwarze 1756: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1757: r->last->line, r->last->col,
1.167 schwarze 1758: roff_name[r->last->tok]);
1.27 schwarze 1759:
1.193 schwarze 1760: if (r->eqn != NULL) {
1.94 schwarze 1761: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1.191 schwarze 1762: r->eqn->node->line, r->eqn->node->pos, "EQ");
1763: eqn_parse(r->eqn);
1764: r->eqn = NULL;
1.32 schwarze 1765: }
1766:
1.193 schwarze 1767: if (r->tbl != NULL) {
1.94 schwarze 1768: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1769: r->tbl->line, r->tbl->pos, "TS");
1.193 schwarze 1770: tbl_end(r->tbl);
1771: r->tbl = NULL;
1.27 schwarze 1772: }
1.1 schwarze 1773: }
1774:
1775: /*
1776: * Parse a roff node's type from the input buffer. This must be in the
1777: * form of ".foo xxx" in the usual way.
1778: */
1.166 schwarze 1779: static enum roff_tok
1.87 schwarze 1780: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.1 schwarze 1781: {
1.87 schwarze 1782: char *cp;
1.16 schwarze 1783: const char *mac;
1784: size_t maclen;
1.187 schwarze 1785: int deftype;
1.166 schwarze 1786: enum roff_tok t;
1.1 schwarze 1787:
1.87 schwarze 1788: cp = buf + *pos;
1789:
1790: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.166 schwarze 1791: return TOKEN_NONE;
1.1 schwarze 1792:
1.87 schwarze 1793: mac = cp;
1794: maclen = roff_getname(r, &cp, ln, ppos);
1.1 schwarze 1795:
1.187 schwarze 1796: deftype = ROFFDEF_USER | ROFFDEF_REN;
1797: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
1798: switch (deftype) {
1799: case ROFFDEF_USER:
1800: t = ROFF_USERDEF;
1801: break;
1802: case ROFFDEF_REN:
1803: t = ROFF_RENAMED;
1804: break;
1805: default:
1806: t = roffhash_find(r->reqtab, mac, maclen);
1807: break;
1808: }
1.166 schwarze 1809: if (t != TOKEN_NONE)
1.87 schwarze 1810: *pos = cp - buf;
1.197 schwarze 1811: else if (deftype == ROFFDEF_UNDEF) {
1812: /* Using an undefined macro defines it to be empty. */
1813: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
1814: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
1815: }
1.149 schwarze 1816: return t;
1.1 schwarze 1817: }
1818:
1.138 schwarze 1819: /* --- handling of request blocks ----------------------------------------- */
1820:
1.212 schwarze 1821: static int
1.2 schwarze 1822: roff_cblock(ROFF_ARGS)
1.1 schwarze 1823: {
1824:
1.2 schwarze 1825: /*
1826: * A block-close `..' should only be invoked as a child of an
1827: * ignore macro, otherwise raise a warning and just ignore it.
1828: */
1829:
1.110 schwarze 1830: if (r->last == NULL) {
1.94 schwarze 1831: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1832: ln, ppos, "..");
1.149 schwarze 1833: return ROFF_IGN;
1.2 schwarze 1834: }
1.1 schwarze 1835:
1.2 schwarze 1836: switch (r->last->tok) {
1.80 schwarze 1837: case ROFF_am:
1.93 schwarze 1838: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.80 schwarze 1839: case ROFF_ami:
1840: case ROFF_de:
1.23 schwarze 1841: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.80 schwarze 1842: case ROFF_dei:
1843: case ROFF_ig:
1.2 schwarze 1844: break;
1845: default:
1.94 schwarze 1846: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1847: ln, ppos, "..");
1.149 schwarze 1848: return ROFF_IGN;
1.2 schwarze 1849: }
1850:
1.110 schwarze 1851: if (buf->buf[pos] != '\0')
1.90 schwarze 1852: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 1853: ".. %s", buf->buf + pos);
1.2 schwarze 1854:
1855: roffnode_pop(r);
1856: roffnode_cleanscope(r);
1.149 schwarze 1857: return ROFF_IGN;
1.2 schwarze 1858:
1859: }
1.1 schwarze 1860:
1.212 schwarze 1861: static int
1.2 schwarze 1862: roffnode_cleanscope(struct roff *r)
1863: {
1.212 schwarze 1864: int inloop;
1.1 schwarze 1865:
1.212 schwarze 1866: inloop = 0;
1867: while (r->last != NULL) {
1.46 schwarze 1868: if (--r->last->endspan != 0)
1.2 schwarze 1869: break;
1.212 schwarze 1870: inloop += roffnode_pop(r);
1.2 schwarze 1871: }
1.212 schwarze 1872: return inloop;
1.2 schwarze 1873: }
1.1 schwarze 1874:
1.212 schwarze 1875: static int
1.68 schwarze 1876: roff_ccond(struct roff *r, int ln, int ppos)
1.2 schwarze 1877: {
1878: if (NULL == r->last) {
1.94 schwarze 1879: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1880: ln, ppos, "\\}");
1.212 schwarze 1881: return 0;
1.2 schwarze 1882: }
1.1 schwarze 1883:
1.2 schwarze 1884: switch (r->last->tok) {
1.80 schwarze 1885: case ROFF_el:
1886: case ROFF_ie:
1887: case ROFF_if:
1.212 schwarze 1888: case ROFF_while:
1.2 schwarze 1889: break;
1890: default:
1.94 schwarze 1891: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1892: ln, ppos, "\\}");
1.212 schwarze 1893: return 0;
1.2 schwarze 1894: }
1.1 schwarze 1895:
1.2 schwarze 1896: if (r->last->endspan > -1) {
1.94 schwarze 1897: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1898: ln, ppos, "\\}");
1.212 schwarze 1899: return 0;
1.2 schwarze 1900: }
1901:
1.212 schwarze 1902: return roffnode_pop(r) + roffnode_cleanscope(r);
1.1 schwarze 1903: }
1904:
1.212 schwarze 1905: static int
1.2 schwarze 1906: roff_block(ROFF_ARGS)
1.1 schwarze 1907: {
1.187 schwarze 1908: const char *name, *value;
1909: char *call, *cp, *iname, *rname;
1910: size_t csz, namesz, rsz;
1911: int deftype;
1.16 schwarze 1912:
1.93 schwarze 1913: /* Ignore groff compatibility mode for now. */
1.2 schwarze 1914:
1.110 schwarze 1915: if (tok == ROFF_de1)
1.93 schwarze 1916: tok = ROFF_de;
1.123 schwarze 1917: else if (tok == ROFF_dei1)
1918: tok = ROFF_dei;
1.110 schwarze 1919: else if (tok == ROFF_am1)
1.93 schwarze 1920: tok = ROFF_am;
1.123 schwarze 1921: else if (tok == ROFF_ami1)
1922: tok = ROFF_ami;
1.93 schwarze 1923:
1924: /* Parse the macro name argument. */
1925:
1.110 schwarze 1926: cp = buf->buf + pos;
1927: if (tok == ROFF_ig) {
1.93 schwarze 1928: iname = NULL;
1929: namesz = 0;
1930: } else {
1931: iname = cp;
1932: namesz = roff_getname(r, &cp, ln, ppos);
1933: iname[namesz] = '\0';
1934: }
1.22 schwarze 1935:
1.93 schwarze 1936: /* Resolve the macro name argument if it is indirect. */
1.22 schwarze 1937:
1.110 schwarze 1938: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.187 schwarze 1939: deftype = ROFFDEF_USER;
1940: name = roff_getstrn(r, iname, namesz, &deftype);
1941: if (name == NULL) {
1.93 schwarze 1942: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 1943: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 1944: "%.*s", (int)namesz, iname);
1945: namesz = 0;
1946: } else
1947: namesz = strlen(name);
1948: } else
1949: name = iname;
1.22 schwarze 1950:
1.110 schwarze 1951: if (namesz == 0 && tok != ROFF_ig) {
1.93 schwarze 1952: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1.167 schwarze 1953: ln, ppos, roff_name[tok]);
1.149 schwarze 1954: return ROFF_IGN;
1.93 schwarze 1955: }
1.2 schwarze 1956:
1.16 schwarze 1957: roffnode_push(r, tok, name, ln, ppos);
1958:
1959: /*
1960: * At the beginning of a `de' macro, clear the existing string
1961: * with the same name, if there is one. New content will be
1.66 schwarze 1962: * appended from roff_block_text() in multiline mode.
1.16 schwarze 1963: */
1.22 schwarze 1964:
1.183 schwarze 1965: if (tok == ROFF_de || tok == ROFF_dei) {
1.86 schwarze 1966: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.183 schwarze 1967: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.187 schwarze 1968: } else if (tok == ROFF_am || tok == ROFF_ami) {
1969: deftype = ROFFDEF_ANY;
1970: value = roff_getstrn(r, iname, namesz, &deftype);
1971: switch (deftype) { /* Before appending, ... */
1972: case ROFFDEF_PRE: /* copy predefined to user-defined. */
1973: roff_setstrn(&r->strtab, name, namesz,
1974: value, strlen(value), 0);
1975: break;
1976: case ROFFDEF_REN: /* call original standard macro. */
1977: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1978: (int)strlen(value), value);
1979: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1980: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1981: free(call);
1982: break;
1983: case ROFFDEF_STD: /* rename and call standard macro. */
1984: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
1985: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
1986: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1987: (int)rsz, rname);
1988: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1989: free(call);
1990: free(rname);
1991: break;
1992: default:
1993: break;
1994: }
1.183 schwarze 1995: }
1.2 schwarze 1996:
1.110 schwarze 1997: if (*cp == '\0')
1.149 schwarze 1998: return ROFF_IGN;
1.1 schwarze 1999:
1.93 schwarze 2000: /* Get the custom end marker. */
1.22 schwarze 2001:
1.93 schwarze 2002: iname = cp;
1.86 schwarze 2003: namesz = roff_getname(r, &cp, ln, ppos);
1.93 schwarze 2004:
2005: /* Resolve the end marker if it is indirect. */
2006:
1.110 schwarze 2007: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.187 schwarze 2008: deftype = ROFFDEF_USER;
2009: name = roff_getstrn(r, iname, namesz, &deftype);
2010: if (name == NULL) {
1.93 schwarze 2011: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.110 schwarze 2012: r->parse, ln, (int)(iname - buf->buf),
1.93 schwarze 2013: "%.*s", (int)namesz, iname);
2014: namesz = 0;
2015: } else
2016: namesz = strlen(name);
2017: } else
2018: name = iname;
2019:
1.86 schwarze 2020: if (namesz)
2021: r->last->end = mandoc_strndup(name, namesz);
1.2 schwarze 2022:
1.110 schwarze 2023: if (*cp != '\0')
1.90 schwarze 2024: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1.167 schwarze 2025: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.1 schwarze 2026:
1.149 schwarze 2027: return ROFF_IGN;
1.1 schwarze 2028: }
2029:
1.212 schwarze 2030: static int
1.2 schwarze 2031: roff_block_sub(ROFF_ARGS)
1.1 schwarze 2032: {
1.166 schwarze 2033: enum roff_tok t;
1.2 schwarze 2034: int i, j;
2035:
2036: /*
2037: * First check whether a custom macro exists at this level. If
2038: * it does, then check against it. This is some of groff's
2039: * stranger behaviours. If we encountered a custom end-scope
2040: * tag and that tag also happens to be a "real" macro, then we
2041: * need to try interpreting it again as a real macro. If it's
2042: * not, then return ignore. Else continue.
2043: */
2044:
2045: if (r->last->end) {
1.35 schwarze 2046: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.110 schwarze 2047: if (buf->buf[i] != r->last->end[j])
1.2 schwarze 2048: break;
1.1 schwarze 2049:
1.110 schwarze 2050: if (r->last->end[j] == '\0' &&
2051: (buf->buf[i] == '\0' ||
2052: buf->buf[i] == ' ' ||
2053: buf->buf[i] == '\t')) {
1.2 schwarze 2054: roffnode_pop(r);
2055: roffnode_cleanscope(r);
1.1 schwarze 2056:
1.110 schwarze 2057: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.35 schwarze 2058: i++;
2059:
2060: pos = i;
1.110 schwarze 2061: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.166 schwarze 2062: TOKEN_NONE)
1.149 schwarze 2063: return ROFF_RERUN;
2064: return ROFF_IGN;
1.2 schwarze 2065: }
1.1 schwarze 2066: }
2067:
1.2 schwarze 2068: /*
2069: * If we have no custom end-query or lookup failed, then try
2070: * pulling it out of the hashtable.
2071: */
1.1 schwarze 2072:
1.110 schwarze 2073: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.1 schwarze 2074:
1.110 schwarze 2075: if (t != ROFF_cblock) {
2076: if (tok != ROFF_ig)
2077: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.149 schwarze 2078: return ROFF_IGN;
1.16 schwarze 2079: }
1.1 schwarze 2080:
1.149 schwarze 2081: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 2082: }
2083:
1.212 schwarze 2084: static int
1.2 schwarze 2085: roff_block_text(ROFF_ARGS)
2086: {
2087:
1.110 schwarze 2088: if (tok != ROFF_ig)
2089: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.16 schwarze 2090:
1.149 schwarze 2091: return ROFF_IGN;
1.2 schwarze 2092: }
2093:
1.212 schwarze 2094: static int
1.2 schwarze 2095: roff_cond_sub(ROFF_ARGS)
2096: {
1.212 schwarze 2097: char *ep;
2098: int endloop, irc, rr;
1.166 schwarze 2099: enum roff_tok t;
1.2 schwarze 2100:
1.212 schwarze 2101: irc = ROFF_IGN;
1.2 schwarze 2102: rr = r->last->rule;
1.212 schwarze 2103: endloop = tok != ROFF_while ? ROFF_IGN :
2104: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2105: if (roffnode_cleanscope(r))
2106: irc |= endloop;
1.39 schwarze 2107:
1.69 schwarze 2108: /*
2109: * If `\}' occurs on a macro line without a preceding macro,
2110: * drop the line completely.
2111: */
2112:
1.110 schwarze 2113: ep = buf->buf + pos;
2114: if (ep[0] == '\\' && ep[1] == '}')
1.71 schwarze 2115: rr = 0;
1.69 schwarze 2116:
1.215 schwarze 2117: /*
2118: * The closing delimiter `\}' rewinds the conditional scope
2119: * but is otherwise ignored when interpreting the line.
2120: */
1.39 schwarze 2121:
1.110 schwarze 2122: while ((ep = strchr(ep, '\\')) != NULL) {
1.190 schwarze 2123: switch (ep[1]) {
2124: case '}':
2125: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1.212 schwarze 2126: if (roff_ccond(r, ln, ep - buf->buf))
2127: irc |= endloop;
1.190 schwarze 2128: break;
2129: case '\0':
2130: ++ep;
2131: break;
2132: default:
2133: ep += 2;
2134: break;
1.70 schwarze 2135: }
1.50 schwarze 2136: }
1.190 schwarze 2137:
2138: /*
2139: * Fully handle known macros when they are structurally
2140: * required or when the conditional evaluated to true.
2141: */
2142:
2143: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.212 schwarze 2144: irc |= t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT) ?
2145: (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs) :
2146: rr ? ROFF_CONT : ROFF_IGN;
2147: return irc;
1.2 schwarze 2148: }
2149:
1.212 schwarze 2150: static int
1.2 schwarze 2151: roff_cond_text(ROFF_ARGS)
2152: {
1.37 schwarze 2153: char *ep;
1.212 schwarze 2154: int endloop, irc, rr;
1.2 schwarze 2155:
1.212 schwarze 2156: irc = ROFF_IGN;
1.2 schwarze 2157: rr = r->last->rule;
1.212 schwarze 2158: endloop = tok != ROFF_while ? ROFF_IGN :
2159: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2160: if (roffnode_cleanscope(r))
2161: irc |= endloop;
1.1 schwarze 2162:
1.215 schwarze 2163: /*
2164: * If `\}' occurs on a text line with neither preceding
2165: * nor following characters, drop the line completely.
2166: */
2167:
1.110 schwarze 2168: ep = buf->buf + pos;
1.215 schwarze 2169: if (strcmp(ep, "\\}") == 0)
2170: rr = 0;
2171:
2172: /*
2173: * The closing delimiter `\}' rewinds the conditional scope
2174: * but is otherwise ignored when interpreting the line.
2175: */
2176:
1.110 schwarze 2177: while ((ep = strchr(ep, '\\')) != NULL) {
1.215 schwarze 2178: switch (ep[1]) {
2179: case '}':
2180: memmove(ep, ep + 2, strlen(ep + 2) + 1);
2181: if (roff_ccond(r, ln, ep - buf->buf))
1.212 schwarze 2182: irc |= endloop;
1.215 schwarze 2183: break;
2184: case '\0':
2185: ++ep;
2186: break;
2187: default:
2188: ep += 2;
2189: break;
1.70 schwarze 2190: }
1.2 schwarze 2191: }
1.212 schwarze 2192: if (rr)
2193: irc |= ROFF_CONT;
2194: return irc;
1.2 schwarze 2195: }
2196:
1.138 schwarze 2197: /* --- handling of numeric and conditional expressions -------------------- */
2198:
1.77 schwarze 2199: /*
2200: * Parse a single signed integer number. Stop at the first non-digit.
2201: * If there is at least one digit, return success and advance the
2202: * parse point, else return failure and let the parse point unchanged.
2203: * Ignore overflows, treat them just like the C language.
2204: */
1.56 schwarze 2205: static int
1.133 schwarze 2206: roff_getnum(const char *v, int *pos, int *res, int flags)
1.56 schwarze 2207: {
1.133 schwarze 2208: int myres, scaled, n, p;
1.79 schwarze 2209:
2210: if (NULL == res)
2211: res = &myres;
1.56 schwarze 2212:
2213: p = *pos;
2214: n = v[p] == '-';
1.133 schwarze 2215: if (n || v[p] == '+')
1.56 schwarze 2216: p++;
2217:
1.133 schwarze 2218: if (flags & ROFFNUM_WHITE)
2219: while (isspace((unsigned char)v[p]))
2220: p++;
2221:
1.56 schwarze 2222: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.77 schwarze 2223: *res = 10 * *res + v[p] - '0';
1.56 schwarze 2224: if (p == *pos + n)
2225: return 0;
2226:
2227: if (n)
2228: *res = -*res;
2229:
1.126 schwarze 2230: /* Each number may be followed by one optional scaling unit. */
2231:
2232: switch (v[p]) {
2233: case 'f':
1.133 schwarze 2234: scaled = *res * 65536;
1.126 schwarze 2235: break;
2236: case 'i':
1.133 schwarze 2237: scaled = *res * 240;
1.126 schwarze 2238: break;
2239: case 'c':
1.133 schwarze 2240: scaled = *res * 240 / 2.54;
1.126 schwarze 2241: break;
2242: case 'v':
2243: case 'P':
1.133 schwarze 2244: scaled = *res * 40;
1.126 schwarze 2245: break;
2246: case 'm':
2247: case 'n':
1.133 schwarze 2248: scaled = *res * 24;
1.126 schwarze 2249: break;
2250: case 'p':
1.133 schwarze 2251: scaled = *res * 10 / 3;
1.126 schwarze 2252: break;
2253: case 'u':
1.133 schwarze 2254: scaled = *res;
1.126 schwarze 2255: break;
2256: case 'M':
1.133 schwarze 2257: scaled = *res * 6 / 25;
1.126 schwarze 2258: break;
2259: default:
1.133 schwarze 2260: scaled = *res;
1.126 schwarze 2261: p--;
2262: break;
2263: }
1.133 schwarze 2264: if (flags & ROFFNUM_SCALE)
2265: *res = scaled;
1.126 schwarze 2266:
2267: *pos = p + 1;
1.149 schwarze 2268: return 1;
1.56 schwarze 2269: }
2270:
1.71 schwarze 2271: /*
2272: * Evaluate a string comparison condition.
2273: * The first character is the delimiter.
2274: * Succeed if the string up to its second occurrence
2275: * matches the string up to its third occurence.
2276: * Advance the cursor after the third occurrence
2277: * or lacking that, to the end of the line.
2278: */
2279: static int
2280: roff_evalstrcond(const char *v, int *pos)
2281: {
2282: const char *s1, *s2, *s3;
2283: int match;
2284:
2285: match = 0;
2286: s1 = v + *pos; /* initial delimiter */
2287: s2 = s1 + 1; /* for scanning the first string */
2288: s3 = strchr(s2, *s1); /* for scanning the second string */
2289:
2290: if (NULL == s3) /* found no middle delimiter */
2291: goto out;
2292:
2293: while ('\0' != *++s3) {
2294: if (*s2 != *s3) { /* mismatch */
2295: s3 = strchr(s3, *s1);
2296: break;
2297: }
2298: if (*s3 == *s1) { /* found the final delimiter */
2299: match = 1;
2300: break;
2301: }
2302: s2++;
2303: }
2304:
2305: out:
2306: if (NULL == s3)
2307: s3 = strchr(s2, '\0');
1.114 schwarze 2308: else if (*s3 != '\0')
1.71 schwarze 2309: s3++;
2310: *pos = s3 - v;
1.149 schwarze 2311: return match;
1.71 schwarze 2312: }
2313:
1.77 schwarze 2314: /*
2315: * Evaluate an optionally negated single character, numerical,
2316: * or string condition.
2317: */
1.71 schwarze 2318: static int
1.143 schwarze 2319: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.5 schwarze 2320: {
1.208 schwarze 2321: const char *start, *end;
2322: char *cp, *name;
2323: size_t sz;
2324: int deftype, len, number, savepos, istrue, wanttrue;
1.5 schwarze 2325:
1.71 schwarze 2326: if ('!' == v[*pos]) {
2327: wanttrue = 0;
2328: (*pos)++;
2329: } else
2330: wanttrue = 1;
2331:
1.5 schwarze 2332: switch (v[*pos]) {
1.112 schwarze 2333: case '\0':
1.149 schwarze 2334: return 0;
1.80 schwarze 2335: case 'n':
2336: case 'o':
1.5 schwarze 2337: (*pos)++;
1.149 schwarze 2338: return wanttrue;
1.80 schwarze 2339: case 'e':
2340: case 't':
1.111 schwarze 2341: case 'v':
1.5 schwarze 2342: (*pos)++;
1.149 schwarze 2343: return !wanttrue;
1.208 schwarze 2344: case 'c':
2345: do {
2346: (*pos)++;
2347: } while (v[*pos] == ' ');
2348:
2349: /*
2350: * Quirk for groff compatibility:
2351: * The horizontal tab is neither available nor unavailable.
2352: */
2353:
2354: if (v[*pos] == '\t') {
2355: (*pos)++;
2356: return 0;
2357: }
2358:
2359: /* Printable ASCII characters are available. */
2360:
2361: if (v[*pos] != '\\') {
2362: (*pos)++;
2363: return wanttrue;
2364: }
2365:
2366: end = v + ++*pos;
2367: switch (mandoc_escape(&end, &start, &len)) {
2368: case ESCAPE_SPECIAL:
2369: istrue = mchars_spec2cp(start, len) != -1;
2370: break;
2371: case ESCAPE_UNICODE:
2372: istrue = 1;
2373: break;
2374: case ESCAPE_NUMBERED:
2375: istrue = mchars_num2char(start, len) != -1;
2376: break;
2377: default:
2378: istrue = !wanttrue;
2379: break;
2380: }
2381: *pos = end - v;
2382: return istrue == wanttrue;
1.182 schwarze 2383: case 'd':
1.143 schwarze 2384: case 'r':
1.182 schwarze 2385: cp = v + *pos + 1;
2386: while (*cp == ' ')
2387: cp++;
2388: name = cp;
2389: sz = roff_getname(r, &cp, ln, cp - v);
1.187 schwarze 2390: if (sz == 0)
2391: istrue = 0;
2392: else if (v[*pos] == 'r')
2393: istrue = roff_hasregn(r, name, sz);
2394: else {
2395: deftype = ROFFDEF_ANY;
2396: roff_getstrn(r, name, sz, &deftype);
2397: istrue = !!deftype;
2398: }
1.143 schwarze 2399: *pos = cp - v;
1.182 schwarze 2400: return istrue == wanttrue;
1.5 schwarze 2401: default:
2402: break;
2403: }
2404:
1.113 schwarze 2405: savepos = *pos;
1.133 schwarze 2406: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.149 schwarze 2407: return (number > 0) == wanttrue;
1.113 schwarze 2408: else if (*pos == savepos)
1.149 schwarze 2409: return roff_evalstrcond(v, pos) == wanttrue;
1.77 schwarze 2410: else
1.149 schwarze 2411: return 0;
1.5 schwarze 2412: }
2413:
1.212 schwarze 2414: static int
1.21 schwarze 2415: roff_line_ignore(ROFF_ARGS)
1.6 schwarze 2416: {
1.30 schwarze 2417:
1.149 schwarze 2418: return ROFF_IGN;
1.21 schwarze 2419: }
2420:
1.212 schwarze 2421: static int
1.123 schwarze 2422: roff_insec(ROFF_ARGS)
2423: {
2424:
2425: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
1.167 schwarze 2426: ln, ppos, roff_name[tok]);
1.149 schwarze 2427: return ROFF_IGN;
1.123 schwarze 2428: }
2429:
1.212 schwarze 2430: static int
1.123 schwarze 2431: roff_unsupp(ROFF_ARGS)
2432: {
2433:
2434: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
1.167 schwarze 2435: ln, ppos, roff_name[tok]);
1.149 schwarze 2436: return ROFF_IGN;
1.123 schwarze 2437: }
2438:
1.212 schwarze 2439: static int
1.2 schwarze 2440: roff_cond(ROFF_ARGS)
2441: {
1.212 schwarze 2442: int irc;
1.46 schwarze 2443:
2444: roffnode_push(r, tok, NULL, ln, ppos);
1.2 schwarze 2445:
1.80 schwarze 2446: /*
1.35 schwarze 2447: * An `.el' has no conditional body: it will consume the value
2448: * of the current rstack entry set in prior `ie' calls or
1.80 schwarze 2449: * defaults to DENY.
1.35 schwarze 2450: *
2451: * If we're not an `el', however, then evaluate the conditional.
2452: */
1.1 schwarze 2453:
1.110 schwarze 2454: r->last->rule = tok == ROFF_el ?
1.80 schwarze 2455: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.110 schwarze 2456: roff_evalcond(r, ln, buf->buf, &pos);
1.2 schwarze 2457:
1.35 schwarze 2458: /*
2459: * An if-else will put the NEGATION of the current evaluated
2460: * conditional into the stack of rules.
2461: */
2462:
1.110 schwarze 2463: if (tok == ROFF_ie) {
1.96 schwarze 2464: if (r->rstackpos + 1 == r->rstacksz) {
2465: r->rstacksz += 16;
2466: r->rstack = mandoc_reallocarray(r->rstack,
2467: r->rstacksz, sizeof(int));
1.35 schwarze 2468: }
1.71 schwarze 2469: r->rstack[++r->rstackpos] = !r->last->rule;
1.2 schwarze 2470: }
1.5 schwarze 2471:
2472: /* If the parent has false as its rule, then so do we. */
2473:
1.71 schwarze 2474: if (r->last->parent && !r->last->parent->rule)
2475: r->last->rule = 0;
1.5 schwarze 2476:
2477: /*
1.46 schwarze 2478: * Determine scope.
2479: * If there is nothing on the line after the conditional,
2480: * not even whitespace, use next-line scope.
1.212 schwarze 2481: * Except that .while does not support next-line scope.
1.5 schwarze 2482: */
1.2 schwarze 2483:
1.212 schwarze 2484: if (buf->buf[pos] == '\0' && tok != ROFF_while) {
1.46 schwarze 2485: r->last->endspan = 2;
2486: goto out;
2487: }
2488:
1.110 schwarze 2489: while (buf->buf[pos] == ' ')
1.46 schwarze 2490: pos++;
2491:
2492: /* An opening brace requests multiline scope. */
1.2 schwarze 2493:
1.110 schwarze 2494: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.2 schwarze 2495: r->last->endspan = -1;
2496: pos += 2;
1.144 schwarze 2497: while (buf->buf[pos] == ' ')
2498: pos++;
1.46 schwarze 2499: goto out;
1.80 schwarze 2500: }
1.2 schwarze 2501:
2502: /*
1.46 schwarze 2503: * Anything else following the conditional causes
2504: * single-line scope. Warn if the scope contains
2505: * nothing but trailing whitespace.
1.2 schwarze 2506: */
2507:
1.110 schwarze 2508: if (buf->buf[pos] == '\0')
1.89 schwarze 2509: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
1.167 schwarze 2510: ln, ppos, roff_name[tok]);
1.2 schwarze 2511:
1.46 schwarze 2512: r->last->endspan = 1;
1.1 schwarze 2513:
1.46 schwarze 2514: out:
1.2 schwarze 2515: *offs = pos;
1.212 schwarze 2516: irc = ROFF_RERUN;
2517: if (tok == ROFF_while)
2518: irc |= ROFF_WHILE;
2519: return irc;
1.1 schwarze 2520: }
2521:
1.212 schwarze 2522: static int
1.7 schwarze 2523: roff_ds(ROFF_ARGS)
2524: {
1.85 schwarze 2525: char *string;
2526: const char *name;
2527: size_t namesz;
1.10 schwarze 2528:
1.123 schwarze 2529: /* Ignore groff compatibility mode for now. */
2530:
2531: if (tok == ROFF_ds1)
2532: tok = ROFF_ds;
2533: else if (tok == ROFF_as1)
2534: tok = ROFF_as;
2535:
1.10 schwarze 2536: /*
1.85 schwarze 2537: * The first word is the name of the string.
2538: * If it is empty or terminated by an escape sequence,
2539: * abort the `ds' request without defining anything.
1.10 schwarze 2540: */
1.7 schwarze 2541:
1.110 schwarze 2542: name = string = buf->buf + pos;
2543: if (*name == '\0')
1.149 schwarze 2544: return ROFF_IGN;
1.7 schwarze 2545:
1.85 schwarze 2546: namesz = roff_getname(r, &string, ln, pos);
1.110 schwarze 2547: if (name[namesz] == '\\')
1.149 schwarze 2548: return ROFF_IGN;
1.85 schwarze 2549:
2550: /* Read past the initial double-quote, if any. */
1.110 schwarze 2551: if (*string == '"')
1.7 schwarze 2552: string++;
2553:
1.10 schwarze 2554: /* The rest is the value. */
1.85 schwarze 2555: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2556: ROFF_as == tok);
1.183 schwarze 2557: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.149 schwarze 2558: return ROFF_IGN;
1.7 schwarze 2559: }
2560:
1.77 schwarze 2561: /*
2562: * Parse a single operator, one or two characters long.
2563: * If the operator is recognized, return success and advance the
2564: * parse point, else return failure and let the parse point unchanged.
2565: */
2566: static int
2567: roff_getop(const char *v, int *pos, char *res)
2568: {
2569:
2570: *res = v[*pos];
2571:
2572: switch (*res) {
1.80 schwarze 2573: case '+':
2574: case '-':
2575: case '*':
2576: case '/':
2577: case '%':
2578: case '&':
2579: case ':':
1.77 schwarze 2580: break;
2581: case '<':
2582: switch (v[*pos + 1]) {
1.80 schwarze 2583: case '=':
1.77 schwarze 2584: *res = 'l';
2585: (*pos)++;
2586: break;
1.80 schwarze 2587: case '>':
1.77 schwarze 2588: *res = '!';
2589: (*pos)++;
2590: break;
1.80 schwarze 2591: case '?':
1.77 schwarze 2592: *res = 'i';
2593: (*pos)++;
2594: break;
2595: default:
2596: break;
2597: }
2598: break;
2599: case '>':
2600: switch (v[*pos + 1]) {
1.80 schwarze 2601: case '=':
1.77 schwarze 2602: *res = 'g';
2603: (*pos)++;
2604: break;
1.80 schwarze 2605: case '?':
1.77 schwarze 2606: *res = 'a';
2607: (*pos)++;
2608: break;
2609: default:
2610: break;
2611: }
2612: break;
2613: case '=':
2614: if ('=' == v[*pos + 1])
2615: (*pos)++;
2616: break;
2617: default:
1.149 schwarze 2618: return 0;
1.77 schwarze 2619: }
2620: (*pos)++;
2621:
1.149 schwarze 2622: return *res;
1.77 schwarze 2623: }
2624:
2625: /*
2626: * Evaluate either a parenthesized numeric expression
2627: * or a single signed integer number.
2628: */
2629: static int
1.106 schwarze 2630: roff_evalpar(struct roff *r, int ln,
1.133 schwarze 2631: const char *v, int *pos, int *res, int flags)
1.77 schwarze 2632: {
2633:
2634: if ('(' != v[*pos])
1.149 schwarze 2635: return roff_getnum(v, pos, res, flags);
1.77 schwarze 2636:
2637: (*pos)++;
1.133 schwarze 2638: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.149 schwarze 2639: return 0;
1.77 schwarze 2640:
1.79 schwarze 2641: /*
2642: * Omission of the closing parenthesis
2643: * is an error in validation mode,
2644: * but ignored in evaluation mode.
2645: */
2646:
1.77 schwarze 2647: if (')' == v[*pos])
2648: (*pos)++;
1.79 schwarze 2649: else if (NULL == res)
1.149 schwarze 2650: return 0;
1.77 schwarze 2651:
1.149 schwarze 2652: return 1;
1.77 schwarze 2653: }
2654:
2655: /*
2656: * Evaluate a complete numeric expression.
2657: * Proceed left to right, there is no concept of precedence.
2658: */
2659: static int
1.106 schwarze 2660: roff_evalnum(struct roff *r, int ln, const char *v,
1.133 schwarze 2661: int *pos, int *res, int flags)
1.77 schwarze 2662: {
2663: int mypos, operand2;
2664: char operator;
2665:
2666: if (NULL == pos) {
2667: mypos = 0;
2668: pos = &mypos;
2669: }
2670:
1.133 schwarze 2671: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2672: while (isspace((unsigned char)v[*pos]))
2673: (*pos)++;
2674:
1.133 schwarze 2675: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.149 schwarze 2676: return 0;
1.77 schwarze 2677:
2678: while (1) {
1.133 schwarze 2679: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2680: while (isspace((unsigned char)v[*pos]))
2681: (*pos)++;
2682:
2683: if ( ! roff_getop(v, pos, &operator))
2684: break;
2685:
1.133 schwarze 2686: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2687: while (isspace((unsigned char)v[*pos]))
2688: (*pos)++;
2689:
1.133 schwarze 2690: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.149 schwarze 2691: return 0;
1.77 schwarze 2692:
1.133 schwarze 2693: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2694: while (isspace((unsigned char)v[*pos]))
2695: (*pos)++;
1.79 schwarze 2696:
2697: if (NULL == res)
2698: continue;
1.77 schwarze 2699:
2700: switch (operator) {
1.80 schwarze 2701: case '+':
1.77 schwarze 2702: *res += operand2;
2703: break;
1.80 schwarze 2704: case '-':
1.77 schwarze 2705: *res -= operand2;
2706: break;
1.80 schwarze 2707: case '*':
1.77 schwarze 2708: *res *= operand2;
2709: break;
1.80 schwarze 2710: case '/':
1.116 schwarze 2711: if (operand2 == 0) {
1.106 schwarze 2712: mandoc_msg(MANDOCERR_DIVZERO,
2713: r->parse, ln, *pos, v);
2714: *res = 0;
2715: break;
2716: }
1.77 schwarze 2717: *res /= operand2;
2718: break;
1.80 schwarze 2719: case '%':
1.116 schwarze 2720: if (operand2 == 0) {
2721: mandoc_msg(MANDOCERR_DIVZERO,
2722: r->parse, ln, *pos, v);
2723: *res = 0;
2724: break;
2725: }
1.77 schwarze 2726: *res %= operand2;
2727: break;
1.80 schwarze 2728: case '<':
1.77 schwarze 2729: *res = *res < operand2;
2730: break;
1.80 schwarze 2731: case '>':
1.77 schwarze 2732: *res = *res > operand2;
2733: break;
1.80 schwarze 2734: case 'l':
1.77 schwarze 2735: *res = *res <= operand2;
2736: break;
1.80 schwarze 2737: case 'g':
1.77 schwarze 2738: *res = *res >= operand2;
2739: break;
1.80 schwarze 2740: case '=':
1.77 schwarze 2741: *res = *res == operand2;
2742: break;
1.80 schwarze 2743: case '!':
1.77 schwarze 2744: *res = *res != operand2;
2745: break;
1.80 schwarze 2746: case '&':
1.77 schwarze 2747: *res = *res && operand2;
2748: break;
1.80 schwarze 2749: case ':':
1.77 schwarze 2750: *res = *res || operand2;
2751: break;
1.80 schwarze 2752: case 'i':
1.77 schwarze 2753: if (operand2 < *res)
2754: *res = operand2;
2755: break;
1.80 schwarze 2756: case 'a':
1.77 schwarze 2757: if (operand2 > *res)
2758: *res = operand2;
2759: break;
2760: default:
2761: abort();
2762: }
2763: }
1.149 schwarze 2764: return 1;
1.77 schwarze 2765: }
2766:
1.138 schwarze 2767: /* --- register management ------------------------------------------------ */
2768:
1.52 schwarze 2769: void
1.60 schwarze 2770: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.41 schwarze 2771: {
1.199 schwarze 2772: roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
1.198 schwarze 2773: }
2774:
2775: static void
2776: roff_setregn(struct roff *r, const char *name, size_t len,
1.199 schwarze 2777: int val, char sign, int step)
1.198 schwarze 2778: {
1.52 schwarze 2779: struct roffreg *reg;
2780:
2781: /* Search for an existing register with the same name. */
2782: reg = r->regtab;
2783:
1.198 schwarze 2784: while (reg != NULL && (reg->key.sz != len ||
2785: strncmp(reg->key.p, name, len) != 0))
1.52 schwarze 2786: reg = reg->next;
1.41 schwarze 2787:
1.52 schwarze 2788: if (NULL == reg) {
2789: /* Create a new register. */
2790: reg = mandoc_malloc(sizeof(struct roffreg));
1.198 schwarze 2791: reg->key.p = mandoc_strndup(name, len);
2792: reg->key.sz = len;
1.60 schwarze 2793: reg->val = 0;
1.199 schwarze 2794: reg->step = 0;
1.52 schwarze 2795: reg->next = r->regtab;
2796: r->regtab = reg;
2797: }
2798:
1.60 schwarze 2799: if ('+' == sign)
2800: reg->val += val;
2801: else if ('-' == sign)
2802: reg->val -= val;
2803: else
2804: reg->val = val;
1.199 schwarze 2805: if (step != INT_MIN)
2806: reg->step = step;
1.41 schwarze 2807: }
2808:
1.65 schwarze 2809: /*
2810: * Handle some predefined read-only number registers.
2811: * For now, return -1 if the requested register is not predefined;
2812: * in case a predefined read-only register having the value -1
2813: * were to turn up, another special value would have to be chosen.
2814: */
2815: static int
1.145 schwarze 2816: roff_getregro(const struct roff *r, const char *name)
1.65 schwarze 2817: {
2818:
2819: switch (*name) {
1.145 schwarze 2820: case '$': /* Number of arguments of the last macro evaluated. */
1.211 schwarze 2821: return r->mstackpos < 0 ? 0 : r->mstack[r->mstackpos].argc;
1.80 schwarze 2822: case 'A': /* ASCII approximation mode is always off. */
1.149 schwarze 2823: return 0;
1.80 schwarze 2824: case 'g': /* Groff compatibility mode is always on. */
1.149 schwarze 2825: return 1;
1.80 schwarze 2826: case 'H': /* Fixed horizontal resolution. */
1.149 schwarze 2827: return 24;
1.80 schwarze 2828: case 'j': /* Always adjust left margin only. */
1.149 schwarze 2829: return 0;
1.80 schwarze 2830: case 'T': /* Some output device is always defined. */
1.149 schwarze 2831: return 1;
1.80 schwarze 2832: case 'V': /* Fixed vertical resolution. */
1.149 schwarze 2833: return 40;
1.65 schwarze 2834: default:
1.149 schwarze 2835: return -1;
1.65 schwarze 2836: }
2837: }
2838:
1.53 schwarze 2839: int
1.198 schwarze 2840: roff_getreg(struct roff *r, const char *name)
1.41 schwarze 2841: {
1.199 schwarze 2842: return roff_getregn(r, name, strlen(name), '\0');
1.53 schwarze 2843: }
2844:
2845: static int
1.199 schwarze 2846: roff_getregn(struct roff *r, const char *name, size_t len, char sign)
1.53 schwarze 2847: {
2848: struct roffreg *reg;
1.65 schwarze 2849: int val;
2850:
2851: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2852: val = roff_getregro(r, name + 1);
1.65 schwarze 2853: if (-1 != val)
1.149 schwarze 2854: return val;
1.65 schwarze 2855: }
1.53 schwarze 2856:
1.199 schwarze 2857: for (reg = r->regtab; reg; reg = reg->next) {
1.53 schwarze 2858: if (len == reg->key.sz &&
1.199 schwarze 2859: 0 == strncmp(name, reg->key.p, len)) {
2860: switch (sign) {
2861: case '+':
2862: reg->val += reg->step;
2863: break;
2864: case '-':
2865: reg->val -= reg->step;
2866: break;
2867: default:
2868: break;
2869: }
1.149 schwarze 2870: return reg->val;
1.199 schwarze 2871: }
2872: }
1.143 schwarze 2873:
1.199 schwarze 2874: roff_setregn(r, name, len, 0, '\0', INT_MIN);
1.149 schwarze 2875: return 0;
1.143 schwarze 2876: }
2877:
2878: static int
2879: roff_hasregn(const struct roff *r, const char *name, size_t len)
2880: {
2881: struct roffreg *reg;
2882: int val;
2883:
2884: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2885: val = roff_getregro(r, name + 1);
1.143 schwarze 2886: if (-1 != val)
1.149 schwarze 2887: return 1;
1.143 schwarze 2888: }
2889:
2890: for (reg = r->regtab; reg; reg = reg->next)
2891: if (len == reg->key.sz &&
2892: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 2893: return 1;
1.41 schwarze 2894:
1.149 schwarze 2895: return 0;
1.41 schwarze 2896: }
2897:
1.52 schwarze 2898: static void
2899: roff_freereg(struct roffreg *reg)
1.41 schwarze 2900: {
1.52 schwarze 2901: struct roffreg *old_reg;
1.41 schwarze 2902:
1.52 schwarze 2903: while (NULL != reg) {
2904: free(reg->key.p);
2905: old_reg = reg;
2906: reg = reg->next;
2907: free(old_reg);
2908: }
1.41 schwarze 2909: }
1.7 schwarze 2910:
1.212 schwarze 2911: static int
1.6 schwarze 2912: roff_nr(ROFF_ARGS)
1.1 schwarze 2913: {
1.199 schwarze 2914: char *key, *val, *step;
1.85 schwarze 2915: size_t keysz;
1.199 schwarze 2916: int iv, is, len;
1.60 schwarze 2917: char sign;
1.6 schwarze 2918:
1.110 schwarze 2919: key = val = buf->buf + pos;
2920: if (*key == '\0')
1.149 schwarze 2921: return ROFF_IGN;
1.85 schwarze 2922:
2923: keysz = roff_getname(r, &val, ln, pos);
1.110 schwarze 2924: if (key[keysz] == '\\')
1.149 schwarze 2925: return ROFF_IGN;
1.6 schwarze 2926:
1.60 schwarze 2927: sign = *val;
1.110 schwarze 2928: if (sign == '+' || sign == '-')
1.60 schwarze 2929: val++;
2930:
1.199 schwarze 2931: len = 0;
2932: if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
2933: return ROFF_IGN;
2934:
2935: step = val + len;
2936: while (isspace((unsigned char)*step))
2937: step++;
2938: if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)
2939: is = INT_MIN;
1.1 schwarze 2940:
1.199 schwarze 2941: roff_setregn(r, key, keysz, iv, sign, is);
1.149 schwarze 2942: return ROFF_IGN;
1.76 schwarze 2943: }
2944:
1.212 schwarze 2945: static int
1.76 schwarze 2946: roff_rr(ROFF_ARGS)
2947: {
2948: struct roffreg *reg, **prev;
1.85 schwarze 2949: char *name, *cp;
2950: size_t namesz;
1.76 schwarze 2951:
1.110 schwarze 2952: name = cp = buf->buf + pos;
2953: if (*name == '\0')
1.149 schwarze 2954: return ROFF_IGN;
1.85 schwarze 2955: namesz = roff_getname(r, &cp, ln, pos);
2956: name[namesz] = '\0';
1.76 schwarze 2957:
2958: prev = &r->regtab;
2959: while (1) {
2960: reg = *prev;
1.110 schwarze 2961: if (reg == NULL || !strcmp(name, reg->key.p))
1.76 schwarze 2962: break;
2963: prev = ®->next;
2964: }
1.110 schwarze 2965: if (reg != NULL) {
1.76 schwarze 2966: *prev = reg->next;
2967: free(reg->key.p);
2968: free(reg);
2969: }
1.149 schwarze 2970: return ROFF_IGN;
1.29 schwarze 2971: }
2972:
1.138 schwarze 2973: /* --- handler functions for roff requests -------------------------------- */
2974:
1.212 schwarze 2975: static int
1.29 schwarze 2976: roff_rm(ROFF_ARGS)
2977: {
2978: const char *name;
2979: char *cp;
1.85 schwarze 2980: size_t namesz;
1.29 schwarze 2981:
1.110 schwarze 2982: cp = buf->buf + pos;
2983: while (*cp != '\0') {
1.85 schwarze 2984: name = cp;
1.110 schwarze 2985: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.85 schwarze 2986: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.183 schwarze 2987: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.110 schwarze 2988: if (name[namesz] == '\\')
1.85 schwarze 2989: break;
1.29 schwarze 2990: }
1.149 schwarze 2991: return ROFF_IGN;
1.51 schwarze 2992: }
2993:
1.212 schwarze 2994: static int
1.51 schwarze 2995: roff_it(ROFF_ARGS)
2996: {
2997: int iv;
2998:
2999: /* Parse the number of lines. */
1.133 schwarze 3000:
3001: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.95 schwarze 3002: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.110 schwarze 3003: ln, ppos, buf->buf + 1);
1.149 schwarze 3004: return ROFF_IGN;
1.51 schwarze 3005: }
3006:
1.134 schwarze 3007: while (isspace((unsigned char)buf->buf[pos]))
3008: pos++;
3009:
3010: /*
3011: * Arm the input line trap.
3012: * Special-casing "an-trap" is an ugly workaround to cope
3013: * with DocBook stupidly fiddling with man(7) internals.
3014: */
1.133 schwarze 3015:
1.51 schwarze 3016: roffit_lines = iv;
1.134 schwarze 3017: roffit_macro = mandoc_strdup(iv != 1 ||
3018: strcmp(buf->buf + pos, "an-trap") ?
3019: buf->buf + pos : "br");
1.149 schwarze 3020: return ROFF_IGN;
1.47 schwarze 3021: }
3022:
1.212 schwarze 3023: static int
1.47 schwarze 3024: roff_Dd(ROFF_ARGS)
3025: {
1.187 schwarze 3026: int mask;
3027: enum roff_tok t, te;
1.99 schwarze 3028:
1.187 schwarze 3029: switch (tok) {
3030: case ROFF_Dd:
3031: tok = MDOC_Dd;
3032: te = MDOC_MAX;
3033: if (r->format == 0)
3034: r->format = MPARSE_MDOC;
3035: mask = MPARSE_MDOC | MPARSE_QUICK;
3036: break;
3037: case ROFF_TH:
3038: tok = MAN_TH;
3039: te = MAN_MAX;
3040: if (r->format == 0)
3041: r->format = MPARSE_MAN;
3042: mask = MPARSE_QUICK;
3043: break;
3044: default:
3045: abort();
3046: }
3047: if ((r->options & mask) == 0)
3048: for (t = tok; t < te; t++)
3049: roff_setstr(r, roff_name[t], NULL, 0);
1.149 schwarze 3050: return ROFF_CONT;
1.14 schwarze 3051: }
3052:
1.212 schwarze 3053: static int
1.27 schwarze 3054: roff_TE(ROFF_ARGS)
3055: {
1.193 schwarze 3056: if (r->tbl == NULL) {
1.94 schwarze 3057: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
3058: ln, ppos, "TE");
1.193 schwarze 3059: return ROFF_IGN;
3060: }
3061: if (tbl_end(r->tbl) == 0) {
3062: r->tbl = NULL;
1.130 schwarze 3063: free(buf->buf);
3064: buf->buf = mandoc_strdup(".sp");
3065: buf->sz = 4;
1.201 schwarze 3066: *offs = 0;
1.149 schwarze 3067: return ROFF_REPARSE;
1.130 schwarze 3068: }
1.193 schwarze 3069: r->tbl = NULL;
1.149 schwarze 3070: return ROFF_IGN;
1.27 schwarze 3071: }
3072:
1.212 schwarze 3073: static int
1.27 schwarze 3074: roff_T_(ROFF_ARGS)
3075: {
3076:
3077: if (NULL == r->tbl)
1.94 schwarze 3078: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
3079: ln, ppos, "T&");
1.27 schwarze 3080: else
1.168 schwarze 3081: tbl_restart(ln, ppos, r->tbl);
1.27 schwarze 3082:
1.149 schwarze 3083: return ROFF_IGN;
1.27 schwarze 3084: }
3085:
1.102 schwarze 3086: /*
3087: * Handle in-line equation delimiters.
3088: */
1.212 schwarze 3089: static int
1.110 schwarze 3090: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.41 schwarze 3091: {
1.105 schwarze 3092: char *cp1, *cp2;
3093: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.41 schwarze 3094:
1.102 schwarze 3095: /*
3096: * Outside equations, look for an opening delimiter.
3097: * If we are inside an equation, we already know it is
3098: * in-line, or this function wouldn't have been called;
3099: * so look for a closing delimiter.
3100: */
3101:
1.110 schwarze 3102: cp1 = buf->buf + pos;
1.102 schwarze 3103: cp2 = strchr(cp1, r->eqn == NULL ?
3104: r->last_eqn->odelim : r->last_eqn->cdelim);
3105: if (cp2 == NULL)
1.149 schwarze 3106: return ROFF_CONT;
1.102 schwarze 3107:
1.105 schwarze 3108: *cp2++ = '\0';
3109: bef_pr = bef_nl = aft_nl = aft_pr = "";
3110:
3111: /* Handle preceding text, protecting whitespace. */
3112:
1.110 schwarze 3113: if (*buf->buf != '\0') {
1.105 schwarze 3114: if (r->eqn == NULL)
3115: bef_pr = "\\&";
3116: bef_nl = "\n";
3117: }
3118:
3119: /*
3120: * Prepare replacing the delimiter with an equation macro
3121: * and drop leading white space from the equation.
3122: */
1.102 schwarze 3123:
1.105 schwarze 3124: if (r->eqn == NULL) {
3125: while (*cp2 == ' ')
3126: cp2++;
3127: mac = ".EQ";
3128: } else
3129: mac = ".EN";
3130:
3131: /* Handle following text, protecting whitespace. */
3132:
3133: if (*cp2 != '\0') {
3134: aft_nl = "\n";
3135: if (r->eqn != NULL)
3136: aft_pr = "\\&";
3137: }
3138:
3139: /* Do the actual replacement. */
3140:
1.110 schwarze 3141: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.105 schwarze 3142: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.110 schwarze 3143: free(buf->buf);
3144: buf->buf = cp1;
1.102 schwarze 3145:
3146: /* Toggle the in-line state of the eqn subsystem. */
3147:
3148: r->eqn_inline = r->eqn == NULL;
1.149 schwarze 3149: return ROFF_REPARSE;
1.41 schwarze 3150: }
3151:
1.212 schwarze 3152: static int
1.107 schwarze 3153: roff_EQ(ROFF_ARGS)
1.32 schwarze 3154: {
1.191 schwarze 3155: struct roff_node *n;
3156:
1.194 schwarze 3157: if (r->man->macroset == MACROSET_MAN)
3158: man_breakscope(r->man, ROFF_EQ);
1.191 schwarze 3159: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
3160: if (ln > r->man->last->line)
3161: n->flags |= NODE_LINE;
3162: n->eqn = mandoc_calloc(1, sizeof(*n->eqn));
3163: n->eqn->expectargs = UINT_MAX;
3164: roff_node_append(r->man, n);
3165: r->man->next = ROFF_NEXT_SIBLING;
1.32 schwarze 3166:
1.110 schwarze 3167: assert(r->eqn == NULL);
1.191 schwarze 3168: if (r->last_eqn == NULL)
3169: r->last_eqn = eqn_alloc(r->parse);
3170: else
3171: eqn_reset(r->last_eqn);
3172: r->eqn = r->last_eqn;
3173: r->eqn->node = n;
1.41 schwarze 3174:
1.110 schwarze 3175: if (buf->buf[pos] != '\0')
1.107 schwarze 3176: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.110 schwarze 3177: ".EQ %s", buf->buf + pos);
1.41 schwarze 3178:
1.149 schwarze 3179: return ROFF_IGN;
1.32 schwarze 3180: }
3181:
1.212 schwarze 3182: static int
1.32 schwarze 3183: roff_EN(ROFF_ARGS)
3184: {
1.191 schwarze 3185: if (r->eqn != NULL) {
3186: eqn_parse(r->eqn);
3187: r->eqn = NULL;
3188: } else
3189: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
3190: if (buf->buf[pos] != '\0')
3191: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
3192: "EN %s", buf->buf + pos);
1.149 schwarze 3193: return ROFF_IGN;
1.32 schwarze 3194: }
3195:
1.212 schwarze 3196: static int
1.27 schwarze 3197: roff_TS(ROFF_ARGS)
3198: {
1.193 schwarze 3199: if (r->tbl != NULL) {
1.94 schwarze 3200: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
3201: ln, ppos, "TS breaks TS");
1.193 schwarze 3202: tbl_end(r->tbl);
1.27 schwarze 3203: }
1.193 schwarze 3204: r->tbl = tbl_alloc(ppos, ln, r->parse);
1.27 schwarze 3205: if (r->last_tbl)
1.193 schwarze 3206: r->last_tbl->next = r->tbl;
1.27 schwarze 3207: else
1.193 schwarze 3208: r->first_tbl = r->tbl;
3209: r->last_tbl = r->tbl;
1.169 schwarze 3210: return ROFF_IGN;
3211: }
3212:
1.212 schwarze 3213: static int
1.169 schwarze 3214: roff_onearg(ROFF_ARGS)
3215: {
3216: struct roff_node *n;
3217: char *cp;
1.177 schwarze 3218: int npos;
1.169 schwarze 3219:
1.174 schwarze 3220: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.192 schwarze 3221: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
3222: tok == ROFF_ti))
1.174 schwarze 3223: man_breakscope(r->man, tok);
3224:
1.181 schwarze 3225: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.177 schwarze 3226: r->man->last = roffce_node;
3227: r->man->next = ROFF_NEXT_SIBLING;
3228: }
3229:
1.169 schwarze 3230: roff_elem_alloc(r->man, ln, ppos, tok);
3231: n = r->man->last;
3232:
3233: cp = buf->buf + pos;
3234: if (*cp != '\0') {
3235: while (*cp != '\0' && *cp != ' ')
3236: cp++;
3237: while (*cp == ' ')
3238: *cp++ = '\0';
3239: if (*cp != '\0')
3240: mandoc_vmsg(MANDOCERR_ARG_EXCESS,
3241: r->parse, ln, cp - buf->buf,
3242: "%s ... %s", roff_name[tok], cp);
3243: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.172 schwarze 3244: }
3245:
1.181 schwarze 3246: if (tok == ROFF_ce || tok == ROFF_rj) {
3247: if (r->man->last->type == ROFFT_ELEM) {
1.177 schwarze 3248: roff_word_alloc(r->man, ln, pos, "1");
3249: r->man->last->flags |= NODE_NOSRC;
3250: }
3251: npos = 0;
3252: if (roff_evalnum(r, ln, r->man->last->string, &npos,
3253: &roffce_lines, 0) == 0) {
3254: mandoc_vmsg(MANDOCERR_CE_NONUM,
3255: r->parse, ln, pos, "ce %s", buf->buf + pos);
3256: roffce_lines = 1;
3257: }
3258: if (roffce_lines < 1) {
3259: r->man->last = r->man->last->parent;
3260: roffce_node = NULL;
3261: roffce_lines = 0;
3262: } else
3263: roffce_node = r->man->last->parent;
3264: } else {
3265: n->flags |= NODE_VALID | NODE_ENDED;
3266: r->man->last = n;
3267: }
3268: n->flags |= NODE_LINE;
1.172 schwarze 3269: r->man->next = ROFF_NEXT_SIBLING;
3270: return ROFF_IGN;
3271: }
3272:
1.212 schwarze 3273: static int
1.172 schwarze 3274: roff_manyarg(ROFF_ARGS)
3275: {
3276: struct roff_node *n;
3277: char *sp, *ep;
3278:
3279: roff_elem_alloc(r->man, ln, ppos, tok);
3280: n = r->man->last;
3281:
3282: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3283: while (*ep != '\0' && *ep != ' ')
3284: ep++;
3285: while (*ep == ' ')
3286: *ep++ = '\0';
3287: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.169 schwarze 3288: }
3289:
3290: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3291: r->man->last = n;
3292: r->man->next = ROFF_NEXT_SIBLING;
1.149 schwarze 3293: return ROFF_IGN;
1.123 schwarze 3294: }
3295:
1.212 schwarze 3296: static int
1.183 schwarze 3297: roff_als(ROFF_ARGS)
3298: {
3299: char *oldn, *newn, *end, *value;
3300: size_t oldsz, newsz, valsz;
3301:
3302: newn = oldn = buf->buf + pos;
3303: if (*newn == '\0')
3304: return ROFF_IGN;
3305:
3306: newsz = roff_getname(r, &oldn, ln, pos);
3307: if (newn[newsz] == '\\' || *oldn == '\0')
3308: return ROFF_IGN;
3309:
3310: end = oldn;
3311: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3312: if (oldsz == 0)
3313: return ROFF_IGN;
3314:
1.210 schwarze 3315: valsz = mandoc_asprintf(&value, ".%.*s \\$@\\\"\n",
1.187 schwarze 3316: (int)oldsz, oldn);
1.183 schwarze 3317: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3318: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3319: free(value);
3320: return ROFF_IGN;
3321: }
3322:
1.212 schwarze 3323: static int
1.168 schwarze 3324: roff_br(ROFF_ARGS)
1.123 schwarze 3325: {
1.174 schwarze 3326: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3327: man_breakscope(r->man, ROFF_br);
1.168 schwarze 3328: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
3329: if (buf->buf[pos] != '\0')
3330: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
3331: "%s %s", roff_name[tok], buf->buf + pos);
3332: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3333: r->man->next = ROFF_NEXT_SIBLING;
3334: return ROFF_IGN;
1.27 schwarze 3335: }
3336:
1.212 schwarze 3337: static int
1.48 schwarze 3338: roff_cc(ROFF_ARGS)
3339: {
3340: const char *p;
3341:
1.110 schwarze 3342: p = buf->buf + pos;
1.48 schwarze 3343:
1.110 schwarze 3344: if (*p == '\0' || (r->control = *p++) == '.')
1.175 schwarze 3345: r->control = '\0';
1.48 schwarze 3346:
1.110 schwarze 3347: if (*p != '\0')
1.132 schwarze 3348: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3349: ln, p - buf->buf, "cc ... %s", p);
1.48 schwarze 3350:
1.213 schwarze 3351: return ROFF_IGN;
3352: }
3353:
3354: static int
3355: roff_char(ROFF_ARGS)
3356: {
3357: const char *p, *kp, *vp;
3358: size_t ksz, vsz;
3359: int font;
3360:
3361: /* Parse the character to be replaced. */
3362:
3363: kp = buf->buf + pos;
3364: p = kp + 1;
3365: if (*kp == '\0' || (*kp == '\\' &&
3366: mandoc_escape(&p, NULL, NULL) != ESCAPE_SPECIAL) ||
3367: (*p != ' ' && *p != '\0')) {
3368: mandoc_vmsg(MANDOCERR_CHAR_ARG, r->parse,
3369: ln, pos, "char %s", kp);
3370: return ROFF_IGN;
3371: }
3372: ksz = p - kp;
3373: while (*p == ' ')
3374: p++;
3375:
3376: /*
3377: * If the replacement string contains a font escape sequence,
3378: * we have to restore the font at the end.
3379: */
3380:
3381: vp = p;
3382: vsz = strlen(p);
3383: font = 0;
3384: while (*p != '\0') {
3385: if (*p++ != '\\')
3386: continue;
3387: switch (mandoc_escape(&p, NULL, NULL)) {
3388: case ESCAPE_FONT:
3389: case ESCAPE_FONTROMAN:
3390: case ESCAPE_FONTITALIC:
3391: case ESCAPE_FONTBOLD:
3392: case ESCAPE_FONTBI:
1.214 schwarze 3393: case ESCAPE_FONTCW:
1.213 schwarze 3394: case ESCAPE_FONTPREV:
3395: font++;
3396: break;
3397: default:
3398: break;
3399: }
3400: }
3401: if (font > 1)
3402: mandoc_msg(MANDOCERR_CHAR_FONT, r->parse,
3403: ln, vp - buf->buf, vp);
3404:
3405: /*
3406: * Approximate the effect of .char using the .tr tables.
3407: * XXX In groff, .char and .tr interact differently.
3408: */
3409:
3410: if (ksz == 1) {
3411: if (r->xtab == NULL)
3412: r->xtab = mandoc_calloc(128, sizeof(*r->xtab));
3413: assert((unsigned int)*kp < 128);
3414: free(r->xtab[(int)*kp].p);
3415: r->xtab[(int)*kp].sz = mandoc_asprintf(&r->xtab[(int)*kp].p,
3416: "%s%s", vp, font ? "\fP" : "");
3417: } else {
3418: roff_setstrn(&r->xmbtab, kp, ksz, vp, vsz, 0);
3419: if (font)
3420: roff_setstrn(&r->xmbtab, kp, ksz, "\\fP", 3, 1);
3421: }
1.149 schwarze 3422: return ROFF_IGN;
1.48 schwarze 3423: }
3424:
1.212 schwarze 3425: static int
1.175 schwarze 3426: roff_ec(ROFF_ARGS)
3427: {
3428: const char *p;
3429:
3430: p = buf->buf + pos;
3431: if (*p == '\0')
3432: r->escape = '\\';
3433: else {
3434: r->escape = *p;
3435: if (*++p != '\0')
3436: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3437: ln, p - buf->buf, "ec ... %s", p);
3438: }
3439: return ROFF_IGN;
3440: }
3441:
1.212 schwarze 3442: static int
1.175 schwarze 3443: roff_eo(ROFF_ARGS)
3444: {
3445: r->escape = '\0';
3446: if (buf->buf[pos] != '\0')
3447: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse,
3448: ln, pos, "eo %s", buf->buf + pos);
3449: return ROFF_IGN;
1.202 schwarze 3450: }
3451:
1.212 schwarze 3452: static int
1.202 schwarze 3453: roff_nop(ROFF_ARGS)
3454: {
3455: while (buf->buf[pos] == ' ')
3456: pos++;
3457: *offs = pos;
3458: return ROFF_RERUN;
1.175 schwarze 3459: }
3460:
1.212 schwarze 3461: static int
1.42 schwarze 3462: roff_tr(ROFF_ARGS)
3463: {
3464: const char *p, *first, *second;
3465: size_t fsz, ssz;
3466: enum mandoc_esc esc;
3467:
1.110 schwarze 3468: p = buf->buf + pos;
1.42 schwarze 3469:
1.110 schwarze 3470: if (*p == '\0') {
1.132 schwarze 3471: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.149 schwarze 3472: return ROFF_IGN;
1.42 schwarze 3473: }
3474:
1.110 schwarze 3475: while (*p != '\0') {
1.42 schwarze 3476: fsz = ssz = 1;
3477:
3478: first = p++;
1.110 schwarze 3479: if (*first == '\\') {
1.42 schwarze 3480: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3481: if (esc == ESCAPE_ERROR) {
1.92 schwarze 3482: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 3483: ln, (int)(p - buf->buf), first);
1.149 schwarze 3484: return ROFF_IGN;
1.42 schwarze 3485: }
3486: fsz = (size_t)(p - first);
3487: }
3488:
3489: second = p++;
1.110 schwarze 3490: if (*second == '\\') {
1.42 schwarze 3491: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3492: if (esc == ESCAPE_ERROR) {
1.92 schwarze 3493: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.110 schwarze 3494: ln, (int)(p - buf->buf), second);
1.149 schwarze 3495: return ROFF_IGN;
1.42 schwarze 3496: }
3497: ssz = (size_t)(p - second);
1.110 schwarze 3498: } else if (*second == '\0') {
1.132 schwarze 3499: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
3500: ln, first - buf->buf, "tr %s", first);
1.42 schwarze 3501: second = " ";
3502: p--;
3503: }
3504:
3505: if (fsz > 1) {
1.80 schwarze 3506: roff_setstrn(&r->xmbtab, first, fsz,
3507: second, ssz, 0);
1.42 schwarze 3508: continue;
3509: }
3510:
1.110 schwarze 3511: if (r->xtab == NULL)
1.80 schwarze 3512: r->xtab = mandoc_calloc(128,
3513: sizeof(struct roffstr));
1.42 schwarze 3514:
3515: free(r->xtab[(int)*first].p);
3516: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3517: r->xtab[(int)*first].sz = ssz;
3518: }
3519:
1.149 schwarze 3520: return ROFF_IGN;
1.42 schwarze 3521: }
3522:
1.211 schwarze 3523: /*
3524: * Implementation of the .return request.
3525: * There is no need to call roff_userret() from here.
3526: * The read module will call that after rewinding the reader stack
3527: * to the place from where the current macro was called.
3528: */
1.212 schwarze 3529: static int
1.211 schwarze 3530: roff_return(ROFF_ARGS)
3531: {
3532: if (r->mstackpos >= 0)
1.212 schwarze 3533: return ROFF_IGN | ROFF_USERRET;
1.211 schwarze 3534:
3535: mandoc_msg(MANDOCERR_REQ_NOMAC, r->parse, ln, ppos, "return");
3536: return ROFF_IGN;
3537: }
3538:
1.212 schwarze 3539: static int
1.178 schwarze 3540: roff_rn(ROFF_ARGS)
3541: {
3542: const char *value;
3543: char *oldn, *newn, *end;
3544: size_t oldsz, newsz;
1.187 schwarze 3545: int deftype;
1.178 schwarze 3546:
3547: oldn = newn = buf->buf + pos;
3548: if (*oldn == '\0')
3549: return ROFF_IGN;
3550:
3551: oldsz = roff_getname(r, &newn, ln, pos);
3552: if (oldn[oldsz] == '\\' || *newn == '\0')
3553: return ROFF_IGN;
3554:
3555: end = newn;
3556: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3557: if (newsz == 0)
3558: return ROFF_IGN;
3559:
1.187 schwarze 3560: deftype = ROFFDEF_ANY;
3561: value = roff_getstrn(r, oldn, oldsz, &deftype);
3562: switch (deftype) {
3563: case ROFFDEF_USER:
1.178 schwarze 3564: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3565: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3566: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.187 schwarze 3567: break;
3568: case ROFFDEF_PRE:
3569: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3570: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3571: break;
3572: case ROFFDEF_REN:
1.178 schwarze 3573: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3574: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.187 schwarze 3575: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3576: break;
3577: case ROFFDEF_STD:
1.178 schwarze 3578: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.187 schwarze 3579: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3580: break;
3581: default:
3582: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3583: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3584: break;
3585: }
1.178 schwarze 3586: return ROFF_IGN;
3587: }
3588:
1.212 schwarze 3589: static int
1.211 schwarze 3590: roff_shift(ROFF_ARGS)
3591: {
3592: struct mctx *ctx;
3593: int levels, i;
3594:
3595: levels = 1;
3596: if (buf->buf[pos] != '\0' &&
3597: roff_evalnum(r, ln, buf->buf, &pos, &levels, 0) == 0) {
3598: mandoc_vmsg(MANDOCERR_CE_NONUM, r->parse,
3599: ln, pos, "shift %s", buf->buf + pos);
3600: levels = 1;
3601: }
3602: if (r->mstackpos < 0) {
3603: mandoc_msg(MANDOCERR_REQ_NOMAC, r->parse, ln, ppos, "shift");
3604: return ROFF_IGN;
3605: }
3606: ctx = r->mstack + r->mstackpos;
3607: if (levels > ctx->argc) {
3608: mandoc_vmsg(MANDOCERR_SHIFT, r->parse,
3609: ln, pos, "%d, but max is %d", levels, ctx->argc);
3610: levels = ctx->argc;
3611: }
3612: if (levels == 0)
3613: return ROFF_IGN;
3614: for (i = 0; i < levels; i++)
3615: free(ctx->argv[i]);
3616: ctx->argc -= levels;
3617: for (i = 0; i < ctx->argc; i++)
3618: ctx->argv[i] = ctx->argv[i + levels];
3619: return ROFF_IGN;
3620: }
3621:
1.212 schwarze 3622: static int
1.14 schwarze 3623: roff_so(ROFF_ARGS)
3624: {
1.121 schwarze 3625: char *name, *cp;
1.15 schwarze 3626:
1.110 schwarze 3627: name = buf->buf + pos;
1.97 schwarze 3628: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.14 schwarze 3629:
1.22 schwarze 3630: /*
3631: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3632: * opening anything that's not in our cwd or anything beneath
3633: * it. Thus, explicitly disallow traversing up the file-system
3634: * or using absolute paths.
3635: */
3636:
1.110 schwarze 3637: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.83 schwarze 3638: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
3639: ".so %s", name);
1.121 schwarze 3640: buf->sz = mandoc_asprintf(&cp,
3641: ".sp\nSee the file %s.\n.sp", name) + 1;
3642: free(buf->buf);
3643: buf->buf = cp;
3644: *offs = 0;
1.149 schwarze 3645: return ROFF_REPARSE;
1.14 schwarze 3646: }
3647:
3648: *offs = pos;
1.149 schwarze 3649: return ROFF_SO;
1.7 schwarze 3650: }
3651:
1.138 schwarze 3652: /* --- user defined strings and macros ------------------------------------ */
3653:
1.212 schwarze 3654: static int
1.16 schwarze 3655: roff_userdef(ROFF_ARGS)
1.12 schwarze 3656: {
1.211 schwarze 3657: struct mctx *ctx;
3658: char *arg, *ap, *dst, *src;
3659: size_t sz;
3660:
3661: /* Initialize a new macro stack context. */
3662:
3663: if (++r->mstackpos == r->mstacksz) {
3664: r->mstack = mandoc_recallocarray(r->mstack,
3665: r->mstacksz, r->mstacksz + 8, sizeof(*r->mstack));
3666: r->mstacksz += 8;
3667: }
3668: ctx = r->mstack + r->mstackpos;
3669: ctx->argsz = 0;
3670: ctx->argc = 0;
3671: ctx->argv = NULL;
3672:
3673: /*
3674: * Collect pointers to macro argument strings,
3675: * NUL-terminating them and escaping quotes.
3676: */
3677:
3678: src = buf->buf + pos;
3679: while (*src != '\0') {
3680: if (ctx->argc == ctx->argsz) {
3681: ctx->argsz += 8;
3682: ctx->argv = mandoc_reallocarray(ctx->argv,
3683: ctx->argsz, sizeof(*ctx->argv));
3684: }
3685: arg = mandoc_getarg(r->parse, &src, ln, &pos);
3686: sz = 1; /* For the terminating NUL. */
3687: for (ap = arg; *ap != '\0'; ap++)
3688: sz += *ap == '"' ? 4 : 1;
3689: ctx->argv[ctx->argc++] = dst = mandoc_malloc(sz);
3690: for (ap = arg; *ap != '\0'; ap++) {
3691: if (*ap == '"') {
3692: memcpy(dst, "\\(dq", 4);
3693: dst += 4;
3694: } else
3695: *dst++ = *ap;
1.16 schwarze 3696: }
1.211 schwarze 3697: *dst = '\0';
1.209 schwarze 3698: }
3699:
1.211 schwarze 3700: /* Replace the macro invocation by the macro definition. */
1.135 schwarze 3701:
1.110 schwarze 3702: free(buf->buf);
1.211 schwarze 3703: buf->buf = mandoc_strdup(r->current_string);
3704: buf->sz = strlen(buf->buf) + 1;
1.120 schwarze 3705: *offs = 0;
1.16 schwarze 3706:
1.149 schwarze 3707: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
1.212 schwarze 3708: ROFF_REPARSE | ROFF_USERCALL : ROFF_IGN | ROFF_APPEND;
1.12 schwarze 3709: }
1.28 schwarze 3710:
1.178 schwarze 3711: /*
3712: * Calling a high-level macro that was renamed with .rn.
3713: * r->current_string has already been set up by roff_parse().
3714: */
1.212 schwarze 3715: static int
1.178 schwarze 3716: roff_renamed(ROFF_ARGS)
3717: {
3718: char *nbuf;
3719:
1.187 schwarze 3720: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
3721: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.178 schwarze 3722: free(buf->buf);
3723: buf->buf = nbuf;
1.201 schwarze 3724: *offs = 0;
1.178 schwarze 3725: return ROFF_CONT;
3726: }
3727:
1.85 schwarze 3728: static size_t
1.28 schwarze 3729: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3730: {
3731: char *name, *cp;
1.85 schwarze 3732: size_t namesz;
1.28 schwarze 3733:
3734: name = *cpp;
3735: if ('\0' == *name)
1.149 schwarze 3736: return 0;
1.28 schwarze 3737:
1.85 schwarze 3738: /* Read until end of name and terminate it with NUL. */
3739: for (cp = name; 1; cp++) {
3740: if ('\0' == *cp || ' ' == *cp) {
3741: namesz = cp - name;
3742: break;
3743: }
1.28 schwarze 3744: if ('\\' != *cp)
3745: continue;
1.88 schwarze 3746: namesz = cp - name;
3747: if ('{' == cp[1] || '}' == cp[1])
3748: break;
1.28 schwarze 3749: cp++;
3750: if ('\\' == *cp)
3751: continue;
1.97 schwarze 3752: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3753: "%.*s", (int)(cp - name + 1), name);
1.85 schwarze 3754: mandoc_escape((const char **)&cp, NULL, NULL);
3755: break;
1.28 schwarze 3756: }
3757:
3758: /* Read past spaces. */
3759: while (' ' == *cp)
3760: cp++;
3761:
3762: *cpp = cp;
1.149 schwarze 3763: return namesz;
1.28 schwarze 3764: }
3765:
1.16 schwarze 3766: /*
3767: * Store *string into the user-defined string called *name.
3768: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.66 schwarze 3769: * append == 0: replace mode
3770: * append == 1: single-line append mode
3771: * append == 2: multiline append mode, append '\n' after each call
1.16 schwarze 3772: */
1.8 schwarze 3773: static void
1.16 schwarze 3774: roff_setstr(struct roff *r, const char *name, const char *string,
1.66 schwarze 3775: int append)
1.7 schwarze 3776: {
1.187 schwarze 3777: size_t namesz;
1.42 schwarze 3778:
1.187 schwarze 3779: namesz = strlen(name);
3780: roff_setstrn(&r->strtab, name, namesz, string,
1.80 schwarze 3781: string ? strlen(string) : 0, append);
1.187 schwarze 3782: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.42 schwarze 3783: }
3784:
3785: static void
3786: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.66 schwarze 3787: const char *string, size_t stringsz, int append)
1.42 schwarze 3788: {
3789: struct roffkv *n;
3790: char *c;
3791: int i;
3792: size_t oldch, newch;
1.7 schwarze 3793:
1.16 schwarze 3794: /* Search for an existing string with the same name. */
1.42 schwarze 3795: n = *r;
3796:
1.84 schwarze 3797: while (n && (namesz != n->key.sz ||
3798: strncmp(n->key.p, name, namesz)))
1.7 schwarze 3799: n = n->next;
1.8 schwarze 3800:
3801: if (NULL == n) {
1.16 schwarze 3802: /* Create a new string table entry. */
1.42 schwarze 3803: n = mandoc_malloc(sizeof(struct roffkv));
3804: n->key.p = mandoc_strndup(name, namesz);
3805: n->key.sz = namesz;
3806: n->val.p = NULL;
3807: n->val.sz = 0;
3808: n->next = *r;
3809: *r = n;
1.66 schwarze 3810: } else if (0 == append) {
1.42 schwarze 3811: free(n->val.p);
3812: n->val.p = NULL;
3813: n->val.sz = 0;
1.16 schwarze 3814: }
3815:
3816: if (NULL == string)
3817: return;
3818:
3819: /*
3820: * One additional byte for the '\n' in multiline mode,
3821: * and one for the terminating '\0'.
3822: */
1.66 schwarze 3823: newch = stringsz + (1 < append ? 2u : 1u);
1.42 schwarze 3824:
3825: if (NULL == n->val.p) {
3826: n->val.p = mandoc_malloc(newch);
3827: *n->val.p = '\0';
1.16 schwarze 3828: oldch = 0;
3829: } else {
1.42 schwarze 3830: oldch = n->val.sz;
3831: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.16 schwarze 3832: }
3833:
3834: /* Skip existing content in the destination buffer. */
1.42 schwarze 3835: c = n->val.p + (int)oldch;
1.16 schwarze 3836:
3837: /* Append new content to the destination buffer. */
1.42 schwarze 3838: i = 0;
3839: while (i < (int)stringsz) {
1.16 schwarze 3840: /*
3841: * Rudimentary roff copy mode:
3842: * Handle escaped backslashes.
3843: */
1.42 schwarze 3844: if ('\\' == string[i] && '\\' == string[i + 1])
3845: i++;
3846: *c++ = string[i++];
1.16 schwarze 3847: }
1.8 schwarze 3848:
1.16 schwarze 3849: /* Append terminating bytes. */
1.66 schwarze 3850: if (1 < append)
1.16 schwarze 3851: *c++ = '\n';
1.42 schwarze 3852:
1.16 schwarze 3853: *c = '\0';
1.42 schwarze 3854: n->val.sz = (int)(c - n->val.p);
1.7 schwarze 3855: }
3856:
1.8 schwarze 3857: static const char *
1.197 schwarze 3858: roff_getstrn(struct roff *r, const char *name, size_t len,
1.187 schwarze 3859: int *deftype)
1.7 schwarze 3860: {
1.187 schwarze 3861: const struct roffkv *n;
1.197 schwarze 3862: int found, i;
1.187 schwarze 3863: enum roff_tok tok;
3864:
1.197 schwarze 3865: found = 0;
3866: for (n = r->strtab; n != NULL; n = n->next) {
3867: if (strncmp(name, n->key.p, len) != 0 ||
3868: n->key.p[len] != '\0' || n->val.p == NULL)
3869: continue;
3870: if (*deftype & ROFFDEF_USER) {
3871: *deftype = ROFFDEF_USER;
3872: return n->val.p;
3873: } else {
3874: found = 1;
3875: break;
3876: }
3877: }
3878: for (n = r->rentab; n != NULL; n = n->next) {
3879: if (strncmp(name, n->key.p, len) != 0 ||
3880: n->key.p[len] != '\0' || n->val.p == NULL)
3881: continue;
3882: if (*deftype & ROFFDEF_REN) {
3883: *deftype = ROFFDEF_REN;
3884: return n->val.p;
3885: } else {
3886: found = 1;
3887: break;
1.187 schwarze 3888: }
3889: }
1.197 schwarze 3890: for (i = 0; i < PREDEFS_MAX; i++) {
3891: if (strncmp(name, predefs[i].name, len) != 0 ||
3892: predefs[i].name[len] != '\0')
3893: continue;
3894: if (*deftype & ROFFDEF_PRE) {
3895: *deftype = ROFFDEF_PRE;
3896: return predefs[i].str;
3897: } else {
3898: found = 1;
3899: break;
1.187 schwarze 3900: }
3901: }
1.197 schwarze 3902: if (r->man->macroset != MACROSET_MAN) {
3903: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
3904: if (strncmp(name, roff_name[tok], len) != 0 ||
3905: roff_name[tok][len] != '\0')
3906: continue;
3907: if (*deftype & ROFFDEF_STD) {
3908: *deftype = ROFFDEF_STD;
3909: return NULL;
3910: } else {
3911: found = 1;
3912: break;
1.187 schwarze 3913: }
3914: }
3915: }
1.197 schwarze 3916: if (r->man->macroset != MACROSET_MDOC) {
3917: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
3918: if (strncmp(name, roff_name[tok], len) != 0 ||
3919: roff_name[tok][len] != '\0')
3920: continue;
3921: if (*deftype & ROFFDEF_STD) {
3922: *deftype = ROFFDEF_STD;
3923: return NULL;
3924: } else {
3925: found = 1;
3926: break;
1.187 schwarze 3927: }
3928: }
1.197 schwarze 3929: }
3930:
3931: if (found == 0 && *deftype != ROFFDEF_ANY) {
3932: if (*deftype & ROFFDEF_REN) {
3933: /*
3934: * This might still be a request,
3935: * so do not treat it as undefined yet.
3936: */
3937: *deftype = ROFFDEF_UNDEF;
3938: return NULL;
1.187 schwarze 3939: }
1.197 schwarze 3940:
3941: /* Using an undefined string defines it to be empty. */
3942:
3943: roff_setstrn(&r->strtab, name, len, "", 0, 0);
3944: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.187 schwarze 3945: }
1.197 schwarze 3946:
1.187 schwarze 3947: *deftype = 0;
1.149 schwarze 3948: return NULL;
1.7 schwarze 3949: }
3950:
1.8 schwarze 3951: static void
1.42 schwarze 3952: roff_freestr(struct roffkv *r)
1.7 schwarze 3953: {
1.42 schwarze 3954: struct roffkv *n, *nn;
1.7 schwarze 3955:
1.42 schwarze 3956: for (n = r; n; n = nn) {
3957: free(n->key.p);
3958: free(n->val.p);
1.7 schwarze 3959: nn = n->next;
3960: free(n);
3961: }
1.27 schwarze 3962: }
1.138 schwarze 3963:
3964: /* --- accessors and utility functions ------------------------------------ */
1.42 schwarze 3965:
3966: /*
3967: * Duplicate an input string, making the appropriate character
3968: * conversations (as stipulated by `tr') along the way.
3969: * Returns a heap-allocated string with all the replacements made.
3970: */
3971: char *
3972: roff_strdup(const struct roff *r, const char *p)
3973: {
3974: const struct roffkv *cp;
3975: char *res;
3976: const char *pp;
3977: size_t ssz, sz;
3978: enum mandoc_esc esc;
3979:
3980: if (NULL == r->xmbtab && NULL == r->xtab)
1.149 schwarze 3981: return mandoc_strdup(p);
1.42 schwarze 3982: else if ('\0' == *p)
1.149 schwarze 3983: return mandoc_strdup("");
1.42 schwarze 3984:
3985: /*
3986: * Step through each character looking for term matches
3987: * (remember that a `tr' can be invoked with an escape, which is
3988: * a glyph but the escape is multi-character).
3989: * We only do this if the character hash has been initialised
3990: * and the string is >0 length.
3991: */
3992:
3993: res = NULL;
3994: ssz = 0;
3995:
3996: while ('\0' != *p) {
1.161 schwarze 3997: assert((unsigned int)*p < 128);
3998: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.42 schwarze 3999: sz = r->xtab[(int)*p].sz;
4000: res = mandoc_realloc(res, ssz + sz + 1);
4001: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
4002: ssz += sz;
4003: p++;
4004: continue;
4005: } else if ('\\' != *p) {
4006: res = mandoc_realloc(res, ssz + 2);
4007: res[ssz++] = *p++;
4008: continue;
4009: }
4010:
4011: /* Search for term matches. */
4012: for (cp = r->xmbtab; cp; cp = cp->next)
4013: if (0 == strncmp(p, cp->key.p, cp->key.sz))
4014: break;
4015:
4016: if (NULL != cp) {
4017: /*
4018: * A match has been found.
4019: * Append the match to the array and move
4020: * forward by its keysize.
4021: */
1.80 schwarze 4022: res = mandoc_realloc(res,
4023: ssz + cp->val.sz + 1);
1.42 schwarze 4024: memcpy(res + ssz, cp->val.p, cp->val.sz);
4025: ssz += cp->val.sz;
4026: p += (int)cp->key.sz;
4027: continue;
4028: }
4029:
4030: /*
4031: * Handle escapes carefully: we need to copy
4032: * over just the escape itself, or else we might
4033: * do replacements within the escape itself.
4034: * Make sure to pass along the bogus string.
4035: */
4036: pp = p++;
4037: esc = mandoc_escape(&p, NULL, NULL);
4038: if (ESCAPE_ERROR == esc) {
4039: sz = strlen(pp);
4040: res = mandoc_realloc(res, ssz + sz + 1);
4041: memcpy(res + ssz, pp, sz);
4042: break;
4043: }
1.80 schwarze 4044: /*
4045: * We bail out on bad escapes.
1.42 schwarze 4046: * No need to warn: we already did so when
4047: * roff_res() was called.
4048: */
4049: sz = (int)(p - pp);
4050: res = mandoc_realloc(res, ssz + sz + 1);
4051: memcpy(res + ssz, pp, sz);
4052: ssz += sz;
4053: }
4054:
4055: res[(int)ssz] = '\0';
1.149 schwarze 4056: return res;
1.99 schwarze 4057: }
4058:
4059: int
4060: roff_getformat(const struct roff *r)
4061: {
4062:
1.149 schwarze 4063: return r->format;
1.48 schwarze 4064: }
4065:
4066: /*
1.80 schwarze 4067: * Find out whether a line is a macro line or not.
1.48 schwarze 4068: * If it is, adjust the current position and return one; if it isn't,
4069: * return zero and don't change the current position.
4070: * If the control character has been set with `.cc', then let that grain
4071: * precedence.
4072: * This is slighly contrary to groff, where using the non-breaking
4073: * control character when `cc' has been invoked will cause the
4074: * non-breaking macro contents to be printed verbatim.
4075: */
4076: int
4077: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
4078: {
4079: int pos;
4080:
4081: pos = *ppos;
4082:
1.175 schwarze 4083: if (r->control != '\0' && cp[pos] == r->control)
1.48 schwarze 4084: pos++;
1.175 schwarze 4085: else if (r->control != '\0')
1.149 schwarze 4086: return 0;
1.48 schwarze 4087: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
4088: pos += 2;
4089: else if ('.' == cp[pos] || '\'' == cp[pos])
4090: pos++;
4091: else
1.149 schwarze 4092: return 0;
1.48 schwarze 4093:
4094: while (' ' == cp[pos] || '\t' == cp[pos])
4095: pos++;
4096:
4097: *ppos = pos;
1.149 schwarze 4098: return 1;
1.1 schwarze 4099: }
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