Annotation of src/usr.bin/mandoc/roff.c, Revision 1.225
1.225 ! schwarze 1: /* $OpenBSD: roff.c,v 1.224 2018/12/15 19:30:19 schwarze Exp $ */
1.1 schwarze 2: /*
1.139 schwarze 3: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.197 schwarze 4: * Copyright (c) 2010-2015, 2017, 2018 Ingo Schwarze <schwarze@openbsd.org>
1.1 schwarze 5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
1.16 schwarze 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.1 schwarze 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.16 schwarze 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.1 schwarze 13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
1.99 schwarze 18: #include <sys/types.h>
19:
1.1 schwarze 20: #include <assert.h>
1.3 schwarze 21: #include <ctype.h>
1.117 schwarze 22: #include <limits.h>
1.167 schwarze 23: #include <stddef.h>
24: #include <stdint.h>
1.51 schwarze 25: #include <stdio.h>
1.1 schwarze 26: #include <stdlib.h>
27: #include <string.h>
28:
1.74 schwarze 29: #include "mandoc_aux.h"
1.167 schwarze 30: #include "mandoc_ohash.h"
1.217 schwarze 31: #include "mandoc.h"
1.137 schwarze 32: #include "roff.h"
1.221 schwarze 33: #include "mandoc_parse.h"
1.98 daniel 34: #include "libmandoc.h"
1.138 schwarze 35: #include "roff_int.h"
1.218 schwarze 36: #include "tbl_parse.h"
1.219 schwarze 37: #include "eqn_parse.h"
1.2 schwarze 38:
1.43 schwarze 39: /* Maximum number of string expansions per line, to break infinite loops. */
40: #define EXPAND_LIMIT 1000
41:
1.187 schwarze 42: /* Types of definitions of macros and strings. */
43: #define ROFFDEF_USER (1 << 1) /* User-defined. */
44: #define ROFFDEF_PRE (1 << 2) /* Predefined. */
45: #define ROFFDEF_REN (1 << 3) /* Renamed standard macro. */
46: #define ROFFDEF_STD (1 << 4) /* mdoc(7) or man(7) macro. */
47: #define ROFFDEF_ANY (ROFFDEF_USER | ROFFDEF_PRE | \
48: ROFFDEF_REN | ROFFDEF_STD)
1.197 schwarze 49: #define ROFFDEF_UNDEF (1 << 5) /* Completely undefined. */
1.187 schwarze 50:
1.138 schwarze 51: /* --- data types --------------------------------------------------------- */
52:
1.41 schwarze 53: /*
1.42 schwarze 54: * An incredibly-simple string buffer.
55: */
1.8 schwarze 56: struct roffstr {
1.42 schwarze 57: char *p; /* nil-terminated buffer */
58: size_t sz; /* saved strlen(p) */
59: };
60:
61: /*
62: * A key-value roffstr pair as part of a singly-linked list.
63: */
64: struct roffkv {
65: struct roffstr key;
66: struct roffstr val;
67: struct roffkv *next; /* next in list */
1.8 schwarze 68: };
69:
1.52 schwarze 70: /*
71: * A single number register as part of a singly-linked list.
72: */
73: struct roffreg {
74: struct roffstr key;
1.53 schwarze 75: int val;
1.199 schwarze 76: int step;
1.52 schwarze 77: struct roffreg *next;
78: };
79:
1.167 schwarze 80: /*
81: * Association of request and macro names with token IDs.
82: */
83: struct roffreq {
84: enum roff_tok tok;
85: char name[];
86: };
87:
1.211 schwarze 88: /*
89: * A macro processing context.
90: * More than one is needed when macro calls are nested.
91: */
92: struct mctx {
93: char **argv;
94: int argc;
95: int argsz;
96: };
97:
1.1 schwarze 98: struct roff {
1.168 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);
1.218 schwarze 169: static void roff_addtbl(struct roff_man *, int, 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: {
1.42 schwarze 719: int i;
1.27 schwarze 720:
1.218 schwarze 721: tbl_free(r->first_tbl);
1.27 schwarze 722: r->first_tbl = r->last_tbl = r->tbl = NULL;
1.1 schwarze 723:
1.219 schwarze 724: eqn_free(r->last_eqn);
1.191 schwarze 725: r->last_eqn = r->eqn = NULL;
1.32 schwarze 726:
1.211 schwarze 727: while (r->mstackpos >= 0)
728: roff_userret(r);
729:
1.1 schwarze 730: while (r->last)
731: roffnode_pop(r);
1.27 schwarze 732:
1.96 schwarze 733: free (r->rstack);
734: r->rstack = NULL;
735: r->rstacksz = 0;
736: r->rstackpos = -1;
737:
738: roff_freereg(r->regtab);
739: r->regtab = NULL;
740:
1.42 schwarze 741: roff_freestr(r->strtab);
1.178 schwarze 742: roff_freestr(r->rentab);
1.42 schwarze 743: roff_freestr(r->xmbtab);
1.178 schwarze 744: r->strtab = r->rentab = r->xmbtab = NULL;
1.42 schwarze 745:
746: if (r->xtab)
747: for (i = 0; i < 128; i++)
748: free(r->xtab[i].p);
749: free(r->xtab);
750: r->xtab = NULL;
1.1 schwarze 751: }
752:
753: void
754: roff_reset(struct roff *r)
755: {
756: roff_free1(r);
1.99 schwarze 757: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.175 schwarze 758: r->control = '\0';
759: r->escape = '\\';
1.179 schwarze 760: roffce_lines = 0;
761: roffce_node = NULL;
762: roffit_lines = 0;
763: roffit_macro = NULL;
1.1 schwarze 764: }
765:
766: void
767: roff_free(struct roff *r)
768: {
1.211 schwarze 769: int i;
770:
1.1 schwarze 771: roff_free1(r);
1.211 schwarze 772: for (i = 0; i < r->mstacksz; i++)
773: free(r->mstack[i].argv);
774: free(r->mstack);
1.167 schwarze 775: roffhash_free(r->reqtab);
1.1 schwarze 776: free(r);
777: }
778:
779: struct roff *
1.223 schwarze 780: roff_alloc(int options)
1.1 schwarze 781: {
782: struct roff *r;
783:
1.11 schwarze 784: r = mandoc_calloc(1, sizeof(struct roff));
1.200 schwarze 785: r->reqtab = roffhash_alloc(0, ROFF_RENAMED);
1.72 schwarze 786: r->options = options;
1.99 schwarze 787: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.211 schwarze 788: r->mstackpos = -1;
1.2 schwarze 789: r->rstackpos = -1;
1.175 schwarze 790: r->escape = '\\';
1.149 schwarze 791: return r;
1.137 schwarze 792: }
793:
1.138 schwarze 794: /* --- syntax tree state data management ---------------------------------- */
795:
1.137 schwarze 796: static void
797: roff_man_free1(struct roff_man *man)
798: {
799:
1.138 schwarze 800: if (man->first != NULL)
801: roff_node_delete(man, man->first);
1.137 schwarze 802: free(man->meta.msec);
803: free(man->meta.vol);
804: free(man->meta.os);
805: free(man->meta.arch);
806: free(man->meta.title);
807: free(man->meta.name);
808: free(man->meta.date);
809: }
810:
811: static void
812: roff_man_alloc1(struct roff_man *man)
813: {
814:
815: memset(&man->meta, 0, sizeof(man->meta));
816: man->first = mandoc_calloc(1, sizeof(*man->first));
817: man->first->type = ROFFT_ROOT;
818: man->last = man->first;
819: man->last_es = NULL;
820: man->flags = 0;
821: man->macroset = MACROSET_NONE;
822: man->lastsec = man->lastnamed = SEC_NONE;
823: man->next = ROFF_NEXT_CHILD;
824: }
825:
826: void
827: roff_man_reset(struct roff_man *man)
828: {
829:
830: roff_man_free1(man);
831: roff_man_alloc1(man);
832: }
833:
834: void
835: roff_man_free(struct roff_man *man)
836: {
837:
838: roff_man_free1(man);
839: free(man);
840: }
841:
842: struct roff_man *
1.223 schwarze 843: roff_man_alloc(struct roff *roff, const char *os_s, int quick)
1.137 schwarze 844: {
845: struct roff_man *man;
846:
847: man = mandoc_calloc(1, sizeof(*man));
848: man->roff = roff;
1.188 schwarze 849: man->os_s = os_s;
1.137 schwarze 850: man->quick = quick;
851: roff_man_alloc1(man);
1.168 schwarze 852: roff->man = man;
1.149 schwarze 853: return man;
1.1 schwarze 854: }
855:
1.138 schwarze 856: /* --- syntax tree handling ----------------------------------------------- */
857:
858: struct roff_node *
859: roff_node_alloc(struct roff_man *man, int line, int pos,
860: enum roff_type type, int tok)
861: {
862: struct roff_node *n;
863:
864: n = mandoc_calloc(1, sizeof(*n));
865: n->line = line;
866: n->pos = pos;
867: n->tok = tok;
868: n->type = type;
869: n->sec = man->lastsec;
870:
871: if (man->flags & MDOC_SYNOPSIS)
1.157 schwarze 872: n->flags |= NODE_SYNPRETTY;
1.138 schwarze 873: else
1.157 schwarze 874: n->flags &= ~NODE_SYNPRETTY;
1.138 schwarze 875: if (man->flags & MDOC_NEWLINE)
1.157 schwarze 876: n->flags |= NODE_LINE;
1.138 schwarze 877: man->flags &= ~MDOC_NEWLINE;
878:
1.149 schwarze 879: return n;
1.138 schwarze 880: }
881:
882: void
883: roff_node_append(struct roff_man *man, struct roff_node *n)
884: {
885:
886: switch (man->next) {
887: case ROFF_NEXT_SIBLING:
1.153 schwarze 888: if (man->last->next != NULL) {
889: n->next = man->last->next;
890: man->last->next->prev = n;
891: } else
892: man->last->parent->last = n;
1.138 schwarze 893: man->last->next = n;
894: n->prev = man->last;
895: n->parent = man->last->parent;
896: break;
897: case ROFF_NEXT_CHILD:
1.159 schwarze 898: if (man->last->child != NULL) {
899: n->next = man->last->child;
900: man->last->child->prev = n;
901: } else
902: man->last->last = n;
1.138 schwarze 903: man->last->child = n;
904: n->parent = man->last;
905: break;
906: default:
907: abort();
908: }
1.154 schwarze 909: man->last = n;
1.138 schwarze 910:
911: switch (n->type) {
912: case ROFFT_HEAD:
913: n->parent->head = n;
914: break;
915: case ROFFT_BODY:
1.154 schwarze 916: if (n->end != ENDBODY_NOT)
917: return;
1.138 schwarze 918: n->parent->body = n;
919: break;
920: case ROFFT_TAIL:
921: n->parent->tail = n;
922: break;
923: default:
1.154 schwarze 924: return;
1.138 schwarze 925: }
1.154 schwarze 926:
927: /*
928: * Copy over the normalised-data pointer of our parent. Not
929: * everybody has one, but copying a null pointer is fine.
930: */
931:
932: n->norm = n->parent->norm;
933: assert(n->parent->type == ROFFT_BLOCK);
1.138 schwarze 934: }
935:
1.139 schwarze 936: void
937: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
938: {
939: struct roff_node *n;
940:
941: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
942: n->string = roff_strdup(man->roff, word);
943: roff_node_append(man, n);
1.158 schwarze 944: n->flags |= NODE_VALID | NODE_ENDED;
1.139 schwarze 945: man->next = ROFF_NEXT_SIBLING;
946: }
947:
948: void
949: roff_word_append(struct roff_man *man, const char *word)
950: {
951: struct roff_node *n;
952: char *addstr, *newstr;
953:
954: n = man->last;
955: addstr = roff_strdup(man->roff, word);
956: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
957: free(addstr);
958: free(n->string);
959: n->string = newstr;
960: man->next = ROFF_NEXT_SIBLING;
1.140 schwarze 961: }
962:
963: void
964: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
965: {
966: struct roff_node *n;
967:
968: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
969: roff_node_append(man, n);
970: man->next = ROFF_NEXT_CHILD;
971: }
972:
973: struct roff_node *
974: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
975: {
976: struct roff_node *n;
977:
978: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
979: roff_node_append(man, n);
980: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 981: return n;
1.139 schwarze 982: }
983:
1.138 schwarze 984: struct roff_node *
985: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
986: {
987: struct roff_node *n;
988:
989: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
990: roff_node_append(man, n);
991: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 992: return n;
1.138 schwarze 993: }
994:
995: struct roff_node *
996: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
997: {
998: struct roff_node *n;
999:
1000: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1001: roff_node_append(man, n);
1002: man->next = ROFF_NEXT_CHILD;
1.149 schwarze 1003: return n;
1.139 schwarze 1004: }
1005:
1.193 schwarze 1006: static void
1.218 schwarze 1007: roff_addtbl(struct roff_man *man, int line, struct tbl_node *tbl)
1.139 schwarze 1008: {
1009: struct roff_node *n;
1.218 schwarze 1010: struct tbl_span *span;
1.139 schwarze 1011:
1012: if (man->macroset == MACROSET_MAN)
1.174 schwarze 1013: man_breakscope(man, ROFF_TS);
1.193 schwarze 1014: while ((span = tbl_span(tbl)) != NULL) {
1.218 schwarze 1015: n = roff_node_alloc(man, line, 0, ROFFT_TBL, TOKEN_NONE);
1.193 schwarze 1016: n->span = span;
1017: roff_node_append(man, n);
1018: n->flags |= NODE_VALID | NODE_ENDED;
1019: man->next = ROFF_NEXT_SIBLING;
1020: }
1.138 schwarze 1021: }
1022:
1023: void
1024: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1025: {
1026:
1027: /* Adjust siblings. */
1028:
1029: if (n->prev)
1030: n->prev->next = n->next;
1031: if (n->next)
1032: n->next->prev = n->prev;
1033:
1034: /* Adjust parent. */
1035:
1036: if (n->parent != NULL) {
1037: if (n->parent->child == n)
1038: n->parent->child = n->next;
1039: if (n->parent->last == n)
1040: n->parent->last = n->prev;
1041: }
1042:
1043: /* Adjust parse point. */
1044:
1045: if (man == NULL)
1046: return;
1047: if (man->last == n) {
1048: if (n->prev == NULL) {
1049: man->last = n->parent;
1050: man->next = ROFF_NEXT_CHILD;
1051: } else {
1052: man->last = n->prev;
1053: man->next = ROFF_NEXT_SIBLING;
1054: }
1055: }
1056: if (man->first == n)
1057: man->first = NULL;
1.216 schwarze 1058: }
1059:
1060: void
1061: roff_node_relink(struct roff_man *man, struct roff_node *n)
1062: {
1063: roff_node_unlink(man, n);
1064: n->prev = n->next = NULL;
1065: roff_node_append(man, n);
1.138 schwarze 1066: }
1067:
1068: void
1069: roff_node_free(struct roff_node *n)
1070: {
1071:
1072: if (n->args != NULL)
1073: mdoc_argv_free(n->args);
1074: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1075: free(n->norm);
1.219 schwarze 1076: eqn_box_free(n->eqn);
1.138 schwarze 1077: free(n->string);
1078: free(n);
1079: }
1080:
1081: void
1082: roff_node_delete(struct roff_man *man, struct roff_node *n)
1083: {
1084:
1085: while (n->child != NULL)
1086: roff_node_delete(man, n->child);
1087: roff_node_unlink(man, n);
1088: roff_node_free(n);
1.141 schwarze 1089: }
1090:
1091: void
1092: deroff(char **dest, const struct roff_node *n)
1093: {
1094: char *cp;
1095: size_t sz;
1096:
1097: if (n->type != ROFFT_TEXT) {
1098: for (n = n->child; n != NULL; n = n->next)
1099: deroff(dest, n);
1100: return;
1101: }
1102:
1.160 schwarze 1103: /* Skip leading whitespace. */
1.141 schwarze 1104:
1.160 schwarze 1105: for (cp = n->string; *cp != '\0'; cp++) {
1.161 schwarze 1106: if (cp[0] == '\\' && cp[1] != '\0' &&
1107: strchr(" %&0^|~", cp[1]) != NULL)
1.141 schwarze 1108: cp++;
1.160 schwarze 1109: else if ( ! isspace((unsigned char)*cp))
1.141 schwarze 1110: break;
1111: }
1112:
1.161 schwarze 1113: /* Skip trailing backslash. */
1114:
1115: sz = strlen(cp);
1.162 schwarze 1116: if (sz > 0 && cp[sz - 1] == '\\')
1.161 schwarze 1117: sz--;
1118:
1.141 schwarze 1119: /* Skip trailing whitespace. */
1120:
1.161 schwarze 1121: for (; sz; sz--)
1.141 schwarze 1122: if ( ! isspace((unsigned char)cp[sz-1]))
1123: break;
1124:
1125: /* Skip empty strings. */
1126:
1127: if (sz == 0)
1128: return;
1129:
1130: if (*dest == NULL) {
1131: *dest = mandoc_strndup(cp, sz);
1132: return;
1133: }
1134:
1135: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1136: free(*dest);
1137: *dest = cp;
1.138 schwarze 1138: }
1139:
1140: /* --- main functions of the roff parser ---------------------------------- */
1141:
1.8 schwarze 1142: /*
1.79 schwarze 1143: * In the current line, expand escape sequences that tend to get
1144: * used in numerical expressions and conditional requests.
1145: * Also check the syntax of the remaining escape sequences.
1.8 schwarze 1146: */
1.212 schwarze 1147: static int
1.110 schwarze 1148: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.8 schwarze 1149: {
1.211 schwarze 1150: struct mctx *ctx; /* current macro call context */
1.81 schwarze 1151: char ubuf[24]; /* buffer to print the number */
1.200 schwarze 1152: struct roff_node *n; /* used for header comments */
1.78 schwarze 1153: const char *start; /* start of the string to process */
1.82 schwarze 1154: char *stesc; /* start of an escape sequence ('\\') */
1.224 schwarze 1155: const char *esct; /* type of esccape sequence */
1.200 schwarze 1156: char *ep; /* end of comment string */
1.23 schwarze 1157: const char *stnam; /* start of the name, after "[(*" */
1158: const char *cp; /* end of the name, e.g. before ']' */
1159: const char *res; /* the string to be substituted */
1.110 schwarze 1160: char *nbuf; /* new buffer to copy buf->buf to */
1.53 schwarze 1161: size_t maxl; /* expected length of the escape name */
1162: size_t naml; /* actual length of the escape name */
1.211 schwarze 1163: size_t asz; /* length of the replacement */
1164: size_t rsz; /* length of the rest of the string */
1.109 schwarze 1165: int inaml; /* length returned from mandoc_escape() */
1.53 schwarze 1166: int expand_count; /* to avoid infinite loops */
1.79 schwarze 1167: int npos; /* position in numeric expression */
1.91 schwarze 1168: int arg_complete; /* argument not interrupted by eol */
1.211 schwarze 1169: int quote_args; /* true for \\$@, false for \\$* */
1.175 schwarze 1170: int done; /* no more input available */
1.187 schwarze 1171: int deftype; /* type of definition to paste */
1.195 schwarze 1172: int rcsid; /* kind of RCS id seen */
1.224 schwarze 1173: enum mandocerr err; /* for escape sequence problems */
1.199 schwarze 1174: char sign; /* increment number register */
1.79 schwarze 1175: char term; /* character terminating the escape */
1.8 schwarze 1176:
1.175 schwarze 1177: /* Search forward for comments. */
1178:
1179: done = 0;
1180: start = buf->buf + pos;
1181: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1182: if (stesc[0] != r->escape || stesc[1] == '\0')
1183: continue;
1184: stesc++;
1185: if (*stesc != '"' && *stesc != '#')
1186: continue;
1.185 schwarze 1187:
1188: /* Comment found, look for RCS id. */
1189:
1.195 schwarze 1190: rcsid = 0;
1.185 schwarze 1191: if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
1.195 schwarze 1192: rcsid = 1 << MANDOC_OS_OPENBSD;
1.185 schwarze 1193: cp += 8;
1194: } else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
1.195 schwarze 1195: rcsid = 1 << MANDOC_OS_NETBSD;
1.185 schwarze 1196: cp += 7;
1197: }
1198: if (cp != NULL &&
1199: isalnum((unsigned char)*cp) == 0 &&
1.186 schwarze 1200: strchr(cp, '$') != NULL) {
1.195 schwarze 1201: if (r->man->meta.rcsids & rcsid)
1.222 schwarze 1202: mandoc_msg(MANDOCERR_RCS_REP, ln,
1203: (int)(stesc - buf->buf) + 1,
1204: "%s", stesc + 1);
1.195 schwarze 1205: r->man->meta.rcsids |= rcsid;
1.186 schwarze 1206: }
1.185 schwarze 1207:
1208: /* Handle trailing whitespace. */
1209:
1.200 schwarze 1210: ep = strchr(stesc--, '\0') - 1;
1211: if (*ep == '\n') {
1.175 schwarze 1212: done = 1;
1.200 schwarze 1213: ep--;
1.175 schwarze 1214: }
1.200 schwarze 1215: if (*ep == ' ' || *ep == '\t')
1.222 schwarze 1216: mandoc_msg(MANDOCERR_SPACE_EOL,
1217: ln, (int)(ep - buf->buf), NULL);
1.200 schwarze 1218:
1219: /*
1220: * Save comments preceding the title macro
1221: * in the syntax tree.
1222: */
1223:
1224: if (r->format == 0) {
1225: while (*ep == ' ' || *ep == '\t')
1226: ep--;
1227: ep[1] = '\0';
1228: n = roff_node_alloc(r->man,
1229: ln, stesc + 1 - buf->buf,
1230: ROFFT_COMMENT, TOKEN_NONE);
1231: n->string = mandoc_strdup(stesc + 2);
1232: roff_node_append(r->man, n);
1233: n->flags |= NODE_VALID | NODE_ENDED;
1234: r->man->next = ROFF_NEXT_SIBLING;
1235: }
1236:
1.206 schwarze 1237: /* Line continuation with comment. */
1238:
1239: if (stesc[1] == '#') {
1240: *stesc = '\0';
1.212 schwarze 1241: return ROFF_IGN | ROFF_APPEND;
1.206 schwarze 1242: }
1243:
1244: /* Discard normal comments. */
1.200 schwarze 1245:
1.207 schwarze 1246: while (stesc > start && stesc[-1] == ' ' &&
1247: (stesc == start + 1 || stesc[-2] != '\\'))
1.175 schwarze 1248: stesc--;
1249: *stesc = '\0';
1250: break;
1251: }
1252: if (stesc == start)
1253: return ROFF_CONT;
1254: stesc--;
1255:
1256: /* Notice the end of the input. */
1257:
1258: if (*stesc == '\n') {
1259: *stesc-- = '\0';
1260: done = 1;
1261: }
1262:
1.43 schwarze 1263: expand_count = 0;
1.175 schwarze 1264: while (stesc >= start) {
1.43 schwarze 1265:
1.78 schwarze 1266: /* Search backwards for the next backslash. */
1267:
1.175 schwarze 1268: if (*stesc != r->escape) {
1269: if (*stesc == '\\') {
1270: *stesc = '\0';
1271: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1272: buf->buf, stesc + 1) + 1;
1273: start = nbuf + pos;
1274: stesc = nbuf + (stesc - buf->buf);
1275: free(buf->buf);
1276: buf->buf = nbuf;
1277: }
1278: stesc--;
1.78 schwarze 1279: continue;
1.175 schwarze 1280: }
1.78 schwarze 1281:
1282: /* If it is escaped, skip it. */
1283:
1284: for (cp = stesc - 1; cp >= start; cp--)
1.175 schwarze 1285: if (*cp != r->escape)
1.78 schwarze 1286: break;
1287:
1.110 schwarze 1288: if ((stesc - cp) % 2 == 0) {
1.175 schwarze 1289: while (stesc > cp)
1290: *stesc-- = '\\';
1.78 schwarze 1291: continue;
1.175 schwarze 1292: } else if (stesc[1] != '\0') {
1293: *stesc = '\\';
1294: } else {
1295: *stesc-- = '\0';
1296: if (done)
1297: continue;
1298: else
1.212 schwarze 1299: return ROFF_IGN | ROFF_APPEND;
1.78 schwarze 1300: }
1.23 schwarze 1301:
1.79 schwarze 1302: /* Decide whether to expand or to check only. */
1.23 schwarze 1303:
1.79 schwarze 1304: term = '\0';
1.78 schwarze 1305: cp = stesc + 1;
1.224 schwarze 1306: if (*cp == 'E')
1307: cp++;
1308: esct = cp;
1309: switch (*esct) {
1.80 schwarze 1310: case '*':
1.211 schwarze 1311: case '$':
1.53 schwarze 1312: res = NULL;
1313: break;
1.80 schwarze 1314: case 'B':
1315: case 'w':
1.79 schwarze 1316: term = cp[1];
1317: /* FALLTHROUGH */
1.80 schwarze 1318: case 'n':
1.199 schwarze 1319: sign = cp[1];
1320: if (sign == '+' || sign == '-')
1321: cp++;
1.53 schwarze 1322: res = ubuf;
1323: break;
1324: default:
1.224 schwarze 1325: err = MANDOCERR_OK;
1326: switch(mandoc_escape(&cp, &stnam, &inaml)) {
1327: case ESCAPE_SPECIAL:
1328: if (mchars_spec2cp(stnam, inaml) >= 0)
1329: break;
1330: /* FALLTHROUGH */
1331: case ESCAPE_ERROR:
1332: err = MANDOCERR_ESC_BAD;
1333: break;
1334: case ESCAPE_UNDEF:
1335: err = MANDOCERR_ESC_UNDEF;
1336: break;
1337: case ESCAPE_UNSUPP:
1338: err = MANDOCERR_ESC_UNSUPP;
1339: break;
1340: default:
1341: break;
1342: }
1343: if (err != MANDOCERR_OK)
1344: mandoc_msg(err, ln, (int)(stesc - buf->buf),
1.92 schwarze 1345: "%.*s", (int)(cp - stesc), stesc);
1.175 schwarze 1346: stesc--;
1.78 schwarze 1347: continue;
1.42 schwarze 1348: }
1349:
1.78 schwarze 1350: if (EXPAND_LIMIT < ++expand_count) {
1.222 schwarze 1351: mandoc_msg(MANDOCERR_ROFFLOOP,
1.110 schwarze 1352: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1353: return ROFF_IGN;
1.78 schwarze 1354: }
1.23 schwarze 1355:
1356: /*
1357: * The third character decides the length
1.53 schwarze 1358: * of the name of the string or register.
1.23 schwarze 1359: * Save a pointer to the name.
1360: */
1361:
1.110 schwarze 1362: if (term == '\0') {
1.79 schwarze 1363: switch (*++cp) {
1.80 schwarze 1364: case '\0':
1.79 schwarze 1365: maxl = 0;
1366: break;
1.80 schwarze 1367: case '(':
1.79 schwarze 1368: cp++;
1369: maxl = 2;
1370: break;
1.80 schwarze 1371: case '[':
1.79 schwarze 1372: cp++;
1373: term = ']';
1374: maxl = 0;
1375: break;
1376: default:
1377: maxl = 1;
1378: break;
1379: }
1380: } else {
1381: cp += 2;
1.8 schwarze 1382: maxl = 0;
1383: }
1.23 schwarze 1384: stnam = cp;
1.8 schwarze 1385:
1.23 schwarze 1386: /* Advance to the end of the name. */
1.8 schwarze 1387:
1.125 schwarze 1388: naml = 0;
1.91 schwarze 1389: arg_complete = 1;
1.125 schwarze 1390: while (maxl == 0 || naml < maxl) {
1.110 schwarze 1391: if (*cp == '\0') {
1.222 schwarze 1392: mandoc_msg(MANDOCERR_ESC_BAD, ln,
1393: (int)(stesc - buf->buf), "%s", stesc);
1.91 schwarze 1394: arg_complete = 0;
1.79 schwarze 1395: break;
1.42 schwarze 1396: }
1.110 schwarze 1397: if (maxl == 0 && *cp == term) {
1.79 schwarze 1398: cp++;
1.125 schwarze 1399: break;
1400: }
1.224 schwarze 1401: if (*cp++ != '\\' || *esct != 'w') {
1.125 schwarze 1402: naml++;
1403: continue;
1404: }
1405: switch (mandoc_escape(&cp, NULL, NULL)) {
1406: case ESCAPE_SPECIAL:
1407: case ESCAPE_UNICODE:
1408: case ESCAPE_NUMBERED:
1.224 schwarze 1409: case ESCAPE_UNDEF:
1.125 schwarze 1410: case ESCAPE_OVERSTRIKE:
1411: naml++;
1412: break;
1413: default:
1.8 schwarze 1414: break;
1.79 schwarze 1415: }
1.8 schwarze 1416: }
1417:
1.23 schwarze 1418: /*
1419: * Retrieve the replacement string; if it is
1420: * undefined, resume searching for escapes.
1421: */
1422:
1.224 schwarze 1423: switch (*esct) {
1.80 schwarze 1424: case '*':
1.187 schwarze 1425: if (arg_complete) {
1426: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1427: res = roff_getstrn(r, stnam, naml, &deftype);
1.203 schwarze 1428:
1429: /*
1430: * If not overriden, let \*(.T
1431: * through to the formatters.
1432: */
1433:
1434: if (res == NULL && naml == 2 &&
1435: stnam[0] == '.' && stnam[1] == 'T') {
1436: roff_setstrn(&r->strtab,
1437: ".T", 2, NULL, 0, 0);
1438: stesc--;
1439: continue;
1440: }
1.187 schwarze 1441: }
1.79 schwarze 1442: break;
1.211 schwarze 1443: case '$':
1444: if (r->mstackpos < 0) {
1.222 schwarze 1445: mandoc_msg(MANDOCERR_ARG_UNDEF, ln,
1446: (int)(stesc - buf->buf), "%.3s", stesc);
1.211 schwarze 1447: break;
1448: }
1449: ctx = r->mstack + r->mstackpos;
1.224 schwarze 1450: npos = esct[1] - '1';
1.211 schwarze 1451: if (npos >= 0 && npos <= 8) {
1452: res = npos < ctx->argc ?
1453: ctx->argv[npos] : "";
1454: break;
1455: }
1.224 schwarze 1456: if (esct[1] == '*')
1.211 schwarze 1457: quote_args = 0;
1.224 schwarze 1458: else if (esct[1] == '@')
1.211 schwarze 1459: quote_args = 1;
1460: else {
1.222 schwarze 1461: mandoc_msg(MANDOCERR_ARG_NONUM, ln,
1462: (int)(stesc - buf->buf), "%.3s", stesc);
1.211 schwarze 1463: break;
1464: }
1465: asz = 0;
1466: for (npos = 0; npos < ctx->argc; npos++) {
1467: if (npos)
1468: asz++; /* blank */
1469: if (quote_args)
1470: asz += 2; /* quotes */
1471: asz += strlen(ctx->argv[npos]);
1472: }
1473: if (asz != 3) {
1474: rsz = buf->sz - (stesc - buf->buf) - 3;
1475: if (asz < 3)
1476: memmove(stesc + asz, stesc + 3, rsz);
1477: buf->sz += asz - 3;
1478: nbuf = mandoc_realloc(buf->buf, buf->sz);
1479: start = nbuf + pos;
1480: stesc = nbuf + (stesc - buf->buf);
1481: buf->buf = nbuf;
1482: if (asz > 3)
1483: memmove(stesc + asz, stesc + 3, rsz);
1484: }
1485: for (npos = 0; npos < ctx->argc; npos++) {
1486: if (npos)
1487: *stesc++ = ' ';
1488: if (quote_args)
1489: *stesc++ = '"';
1490: cp = ctx->argv[npos];
1491: while (*cp != '\0')
1492: *stesc++ = *cp++;
1493: if (quote_args)
1494: *stesc++ = '"';
1495: }
1496: continue;
1.80 schwarze 1497: case 'B':
1.79 schwarze 1498: npos = 0;
1.91 schwarze 1499: ubuf[0] = arg_complete &&
1.133 schwarze 1500: roff_evalnum(r, ln, stnam, &npos,
1501: NULL, ROFFNUM_SCALE) &&
1.91 schwarze 1502: stnam + npos + 1 == cp ? '1' : '0';
1.79 schwarze 1503: ubuf[1] = '\0';
1504: break;
1.80 schwarze 1505: case 'n':
1.91 schwarze 1506: if (arg_complete)
1507: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.199 schwarze 1508: roff_getregn(r, stnam, naml, sign));
1.91 schwarze 1509: else
1510: ubuf[0] = '\0';
1.79 schwarze 1511: break;
1.80 schwarze 1512: case 'w':
1.91 schwarze 1513: /* use even incomplete args */
1.81 schwarze 1514: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.79 schwarze 1515: 24 * (int)naml);
1516: break;
1517: }
1.8 schwarze 1518:
1.110 schwarze 1519: if (res == NULL) {
1.224 schwarze 1520: if (*esct == '*')
1.222 schwarze 1521: mandoc_msg(MANDOCERR_STR_UNDEF,
1522: ln, (int)(stesc - buf->buf),
1.211 schwarze 1523: "%.*s", (int)naml, stnam);
1.37 schwarze 1524: res = "";
1.118 schwarze 1525: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1.222 schwarze 1526: mandoc_msg(MANDOCERR_ROFFLOOP,
1.118 schwarze 1527: ln, (int)(stesc - buf->buf), NULL);
1.149 schwarze 1528: return ROFF_IGN;
1.8 schwarze 1529: }
1530:
1.23 schwarze 1531: /* Replace the escape sequence by the string. */
1532:
1.82 schwarze 1533: *stesc = '\0';
1.110 schwarze 1534: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1535: buf->buf, res, cp) + 1;
1.8 schwarze 1536:
1.78 schwarze 1537: /* Prepare for the next replacement. */
1.8 schwarze 1538:
1.78 schwarze 1539: start = nbuf + pos;
1.110 schwarze 1540: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1541: free(buf->buf);
1542: buf->buf = nbuf;
1.42 schwarze 1543: }
1.149 schwarze 1544: return ROFF_CONT;
1.42 schwarze 1545: }
1.225 ! schwarze 1546:
! 1547: /*
! 1548: * Parse a quoted or unquoted roff-style request or macro argument.
! 1549: * Return a pointer to the parsed argument, which is either the original
! 1550: * pointer or advanced by one byte in case the argument is quoted.
! 1551: * NUL-terminate the argument in place.
! 1552: * Collapse pairs of quotes inside quoted arguments.
! 1553: * Advance the argument pointer to the next argument,
! 1554: * or to the NUL byte terminating the argument line.
! 1555: */
! 1556: char *
! 1557: mandoc_getarg(char **cpp, int ln, int *pos)
! 1558: {
! 1559: char *start, *cp;
! 1560: int quoted, pairs, white;
! 1561:
! 1562: /* Quoting can only start with a new word. */
! 1563: start = *cpp;
! 1564: quoted = 0;
! 1565: if ('"' == *start) {
! 1566: quoted = 1;
! 1567: start++;
! 1568: }
! 1569:
! 1570: pairs = 0;
! 1571: white = 0;
! 1572: for (cp = start; '\0' != *cp; cp++) {
! 1573:
! 1574: /*
! 1575: * Move the following text left
! 1576: * after quoted quotes and after "\\" and "\t".
! 1577: */
! 1578: if (pairs)
! 1579: cp[-pairs] = cp[0];
! 1580:
! 1581: if ('\\' == cp[0]) {
! 1582: /*
! 1583: * In copy mode, translate double to single
! 1584: * backslashes and backslash-t to literal tabs.
! 1585: */
! 1586: switch (cp[1]) {
! 1587: case 'a':
! 1588: case 't':
! 1589: cp[0] = '\t';
! 1590: /* FALLTHROUGH */
! 1591: case '\\':
! 1592: pairs++;
! 1593: cp++;
! 1594: break;
! 1595: case ' ':
! 1596: /* Skip escaped blanks. */
! 1597: if (0 == quoted)
! 1598: cp++;
! 1599: break;
! 1600: default:
! 1601: break;
! 1602: }
! 1603: } else if (0 == quoted) {
! 1604: if (' ' == cp[0]) {
! 1605: /* Unescaped blanks end unquoted args. */
! 1606: white = 1;
! 1607: break;
! 1608: }
! 1609: } else if ('"' == cp[0]) {
! 1610: if ('"' == cp[1]) {
! 1611: /* Quoted quotes collapse. */
! 1612: pairs++;
! 1613: cp++;
! 1614: } else {
! 1615: /* Unquoted quotes end quoted args. */
! 1616: quoted = 2;
! 1617: break;
! 1618: }
! 1619: }
! 1620: }
! 1621:
! 1622: /* Quoted argument without a closing quote. */
! 1623: if (1 == quoted)
! 1624: mandoc_msg(MANDOCERR_ARG_QUOTE, ln, *pos, NULL);
! 1625:
! 1626: /* NUL-terminate this argument and move to the next one. */
! 1627: if (pairs)
! 1628: cp[-pairs] = '\0';
! 1629: if ('\0' != *cp) {
! 1630: *cp++ = '\0';
! 1631: while (' ' == *cp)
! 1632: cp++;
! 1633: }
! 1634: *pos += (int)(cp - start) + (quoted ? 1 : 0);
! 1635: *cpp = cp;
! 1636:
! 1637: if ('\0' == *cp && (white || ' ' == cp[-1]))
! 1638: mandoc_msg(MANDOCERR_SPACE_EOL, ln, *pos, NULL);
! 1639:
! 1640: return start;
! 1641: }
! 1642:
1.42 schwarze 1643:
1644: /*
1.147 schwarze 1645: * Process text streams.
1.42 schwarze 1646: */
1.212 schwarze 1647: static int
1.177 schwarze 1648: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.42 schwarze 1649: {
1650: size_t sz;
1651: const char *start;
1.51 schwarze 1652: char *p;
1653: int isz;
1.42 schwarze 1654: enum mandoc_esc esc;
1655:
1.147 schwarze 1656: /* Spring the input line trap. */
1657:
1658: if (roffit_lines == 1) {
1659: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1660: free(buf->buf);
1661: buf->buf = p;
1662: buf->sz = isz + 1;
1663: *offs = 0;
1664: free(roffit_macro);
1665: roffit_lines = 0;
1.149 schwarze 1666: return ROFF_REPARSE;
1.147 schwarze 1667: } else if (roffit_lines > 1)
1668: --roffit_lines;
1669:
1.177 schwarze 1670: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1671: if (roffce_lines < 1) {
1672: r->man->last = roffce_node;
1673: r->man->next = ROFF_NEXT_SIBLING;
1674: roffce_lines = 0;
1675: roffce_node = NULL;
1676: } else
1677: roffce_lines--;
1678: }
1679:
1.147 schwarze 1680: /* Convert all breakable hyphens into ASCII_HYPH. */
1681:
1.110 schwarze 1682: start = p = buf->buf + pos;
1.42 schwarze 1683:
1.110 schwarze 1684: while (*p != '\0') {
1.42 schwarze 1685: sz = strcspn(p, "-\\");
1686: p += sz;
1687:
1.110 schwarze 1688: if (*p == '\0')
1.42 schwarze 1689: break;
1690:
1.110 schwarze 1691: if (*p == '\\') {
1.42 schwarze 1692: /* Skip over escapes. */
1693: p++;
1.62 schwarze 1694: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.110 schwarze 1695: if (esc == ESCAPE_ERROR)
1.42 schwarze 1696: break;
1.136 schwarze 1697: while (*p == '-')
1698: p++;
1.42 schwarze 1699: continue;
1700: } else if (p == start) {
1701: p++;
1702: continue;
1703: }
1704:
1.44 schwarze 1705: if (isalpha((unsigned char)p[-1]) &&
1706: isalpha((unsigned char)p[1]))
1.42 schwarze 1707: *p = ASCII_HYPH;
1708: p++;
1.8 schwarze 1709: }
1.149 schwarze 1710: return ROFF_CONT;
1.8 schwarze 1711: }
1712:
1.212 schwarze 1713: int
1.110 schwarze 1714: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.1 schwarze 1715: {
1.166 schwarze 1716: enum roff_tok t;
1.212 schwarze 1717: int e;
1.110 schwarze 1718: int pos; /* parse point */
1.115 schwarze 1719: int spos; /* saved parse point for messages */
1.110 schwarze 1720: int ppos; /* original offset in buf->buf */
1721: int ctl; /* macro line (boolean) */
1722:
1723: ppos = pos = *offs;
1.1 schwarze 1724:
1.102 schwarze 1725: /* Handle in-line equation delimiters. */
1726:
1.108 schwarze 1727: if (r->tbl == NULL &&
1728: r->last_eqn != NULL && r->last_eqn->delim &&
1.102 schwarze 1729: (r->eqn == NULL || r->eqn_inline)) {
1.110 schwarze 1730: e = roff_eqndelim(r, buf, pos);
1.102 schwarze 1731: if (e == ROFF_REPARSE)
1.149 schwarze 1732: return e;
1.102 schwarze 1733: assert(e == ROFF_CONT);
1734: }
1735:
1736: /* Expand some escape sequences. */
1.8 schwarze 1737:
1.110 schwarze 1738: e = roff_res(r, buf, ln, pos);
1.212 schwarze 1739: if ((e & ROFF_MASK) == ROFF_IGN)
1.149 schwarze 1740: return e;
1.110 schwarze 1741: assert(e == ROFF_CONT);
1.8 schwarze 1742:
1.110 schwarze 1743: ctl = roff_getcontrol(r, buf->buf, &pos);
1.35 schwarze 1744:
1.8 schwarze 1745: /*
1.2 schwarze 1746: * First, if a scope is open and we're not a macro, pass the
1.124 schwarze 1747: * text through the macro's filter.
1748: * Equations process all content themselves.
1749: * Tables process almost all content themselves, but we want
1750: * to warn about macros before passing it there.
1.2 schwarze 1751: */
1752:
1.124 schwarze 1753: if (r->last != NULL && ! ctl) {
1.2 schwarze 1754: t = r->last->tok;
1.110 schwarze 1755: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.212 schwarze 1756: if ((e & ROFF_MASK) == ROFF_IGN)
1.149 schwarze 1757: return e;
1.212 schwarze 1758: e &= ~ROFF_MASK;
1759: } else
1760: e = ROFF_IGN;
1.191 schwarze 1761: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1762: eqn_read(r->eqn, buf->buf + ppos);
1.212 schwarze 1763: return e;
1.191 schwarze 1764: }
1.193 schwarze 1765: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1766: tbl_read(r->tbl, ln, buf->buf, ppos);
1.218 schwarze 1767: roff_addtbl(r->man, ln, r->tbl);
1.212 schwarze 1768: return e;
1.193 schwarze 1769: }
1.124 schwarze 1770: if ( ! ctl)
1.212 schwarze 1771: return roff_parsetext(r, buf, pos, offs) | e;
1.100 schwarze 1772:
1773: /* Skip empty request lines. */
1774:
1.110 schwarze 1775: if (buf->buf[pos] == '"') {
1.222 schwarze 1776: mandoc_msg(MANDOCERR_COMMENT_BAD, ln, pos, NULL);
1.149 schwarze 1777: return ROFF_IGN;
1.110 schwarze 1778: } else if (buf->buf[pos] == '\0')
1.149 schwarze 1779: return ROFF_IGN;
1.2 schwarze 1780:
1781: /*
1782: * If a scope is open, go to the child handler for that macro,
1783: * as it may want to preprocess before doing anything with it.
1.32 schwarze 1784: * Don't do so if an equation is open.
1.2 schwarze 1785: */
1786:
1787: if (r->last) {
1.1 schwarze 1788: t = r->last->tok;
1.149 schwarze 1789: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 1790: }
1791:
1.115 schwarze 1792: /* No scope is open. This is a new request or macro. */
1793:
1794: spos = pos;
1795: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1796:
1797: /* Tables ignore most macros. */
1798:
1.180 schwarze 1799: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.181 schwarze 1800: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.222 schwarze 1801: mandoc_msg(MANDOCERR_TBLMACRO,
1802: ln, pos, "%s", buf->buf + spos);
1.180 schwarze 1803: if (t != TOKEN_NONE)
1.149 schwarze 1804: return ROFF_IGN;
1.129 schwarze 1805: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1806: pos++;
1.163 schwarze 1807: while (buf->buf[pos] == ' ')
1.129 schwarze 1808: pos++;
1.193 schwarze 1809: tbl_read(r->tbl, ln, buf->buf, pos);
1.218 schwarze 1810: roff_addtbl(r->man, ln, r->tbl);
1.193 schwarze 1811: return ROFF_IGN;
1.115 schwarze 1812: }
1813:
1.177 schwarze 1814: /* For now, let high level macros abort .ce mode. */
1815:
1816: if (ctl && roffce_node != NULL &&
1.196 schwarze 1817: (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
1818: t == ROFF_TH || t == ROFF_TS)) {
1.177 schwarze 1819: r->man->last = roffce_node;
1820: r->man->next = ROFF_NEXT_SIBLING;
1821: roffce_lines = 0;
1822: roffce_node = NULL;
1823: }
1824:
1.2 schwarze 1825: /*
1.115 schwarze 1826: * This is neither a roff request nor a user-defined macro.
1827: * Let the standard macro set parsers handle it.
1.2 schwarze 1828: */
1829:
1.166 schwarze 1830: if (t == TOKEN_NONE)
1.149 schwarze 1831: return ROFF_CONT;
1.115 schwarze 1832:
1833: /* Execute a roff request or a user defined macro. */
1.1 schwarze 1834:
1.168 schwarze 1835: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.2 schwarze 1836: }
1837:
1.211 schwarze 1838: /*
1839: * Internal interface function to tell the roff parser that execution
1840: * of the current macro ended. This is required because macro
1841: * definitions usually do not end with a .return request.
1842: */
1843: void
1844: roff_userret(struct roff *r)
1845: {
1846: struct mctx *ctx;
1847: int i;
1848:
1849: assert(r->mstackpos >= 0);
1850: ctx = r->mstack + r->mstackpos;
1851: for (i = 0; i < ctx->argc; i++)
1852: free(ctx->argv[i]);
1853: ctx->argc = 0;
1854: r->mstackpos--;
1855: }
1856:
1.27 schwarze 1857: void
1.2 schwarze 1858: roff_endparse(struct roff *r)
1859: {
1.193 schwarze 1860: if (r->last != NULL)
1.222 schwarze 1861: mandoc_msg(MANDOCERR_BLK_NOEND, r->last->line,
1862: r->last->col, "%s", roff_name[r->last->tok]);
1.27 schwarze 1863:
1.193 schwarze 1864: if (r->eqn != NULL) {
1.222 schwarze 1865: mandoc_msg(MANDOCERR_BLK_NOEND,
1.191 schwarze 1866: r->eqn->node->line, r->eqn->node->pos, "EQ");
1867: eqn_parse(r->eqn);
1868: r->eqn = NULL;
1.32 schwarze 1869: }
1870:
1.193 schwarze 1871: if (r->tbl != NULL) {
1.218 schwarze 1872: tbl_end(r->tbl, 1);
1.193 schwarze 1873: r->tbl = NULL;
1.27 schwarze 1874: }
1.1 schwarze 1875: }
1876:
1877: /*
1878: * Parse a roff node's type from the input buffer. This must be in the
1879: * form of ".foo xxx" in the usual way.
1880: */
1.166 schwarze 1881: static enum roff_tok
1.87 schwarze 1882: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.1 schwarze 1883: {
1.87 schwarze 1884: char *cp;
1.16 schwarze 1885: const char *mac;
1886: size_t maclen;
1.187 schwarze 1887: int deftype;
1.166 schwarze 1888: enum roff_tok t;
1.1 schwarze 1889:
1.87 schwarze 1890: cp = buf + *pos;
1891:
1892: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.166 schwarze 1893: return TOKEN_NONE;
1.1 schwarze 1894:
1.87 schwarze 1895: mac = cp;
1896: maclen = roff_getname(r, &cp, ln, ppos);
1.1 schwarze 1897:
1.187 schwarze 1898: deftype = ROFFDEF_USER | ROFFDEF_REN;
1899: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
1900: switch (deftype) {
1901: case ROFFDEF_USER:
1902: t = ROFF_USERDEF;
1903: break;
1904: case ROFFDEF_REN:
1905: t = ROFF_RENAMED;
1906: break;
1907: default:
1908: t = roffhash_find(r->reqtab, mac, maclen);
1909: break;
1910: }
1.166 schwarze 1911: if (t != TOKEN_NONE)
1.87 schwarze 1912: *pos = cp - buf;
1.197 schwarze 1913: else if (deftype == ROFFDEF_UNDEF) {
1914: /* Using an undefined macro defines it to be empty. */
1915: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
1916: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
1917: }
1.149 schwarze 1918: return t;
1.1 schwarze 1919: }
1920:
1.138 schwarze 1921: /* --- handling of request blocks ----------------------------------------- */
1922:
1.212 schwarze 1923: static int
1.2 schwarze 1924: roff_cblock(ROFF_ARGS)
1.1 schwarze 1925: {
1926:
1.2 schwarze 1927: /*
1928: * A block-close `..' should only be invoked as a child of an
1929: * ignore macro, otherwise raise a warning and just ignore it.
1930: */
1931:
1.110 schwarze 1932: if (r->last == NULL) {
1.222 schwarze 1933: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.149 schwarze 1934: return ROFF_IGN;
1.2 schwarze 1935: }
1.1 schwarze 1936:
1.2 schwarze 1937: switch (r->last->tok) {
1.80 schwarze 1938: case ROFF_am:
1.93 schwarze 1939: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.80 schwarze 1940: case ROFF_ami:
1941: case ROFF_de:
1.23 schwarze 1942: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.80 schwarze 1943: case ROFF_dei:
1944: case ROFF_ig:
1.2 schwarze 1945: break;
1946: default:
1.222 schwarze 1947: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.149 schwarze 1948: return ROFF_IGN;
1.2 schwarze 1949: }
1950:
1.110 schwarze 1951: if (buf->buf[pos] != '\0')
1.222 schwarze 1952: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.110 schwarze 1953: ".. %s", buf->buf + pos);
1.2 schwarze 1954:
1955: roffnode_pop(r);
1956: roffnode_cleanscope(r);
1.149 schwarze 1957: return ROFF_IGN;
1.2 schwarze 1958:
1959: }
1.1 schwarze 1960:
1.212 schwarze 1961: static int
1.2 schwarze 1962: roffnode_cleanscope(struct roff *r)
1963: {
1.212 schwarze 1964: int inloop;
1.1 schwarze 1965:
1.212 schwarze 1966: inloop = 0;
1967: while (r->last != NULL) {
1.46 schwarze 1968: if (--r->last->endspan != 0)
1.2 schwarze 1969: break;
1.212 schwarze 1970: inloop += roffnode_pop(r);
1.2 schwarze 1971: }
1.212 schwarze 1972: return inloop;
1.2 schwarze 1973: }
1.1 schwarze 1974:
1.212 schwarze 1975: static int
1.68 schwarze 1976: roff_ccond(struct roff *r, int ln, int ppos)
1.2 schwarze 1977: {
1978: if (NULL == r->last) {
1.222 schwarze 1979: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.212 schwarze 1980: return 0;
1.2 schwarze 1981: }
1.1 schwarze 1982:
1.2 schwarze 1983: switch (r->last->tok) {
1.80 schwarze 1984: case ROFF_el:
1985: case ROFF_ie:
1986: case ROFF_if:
1.212 schwarze 1987: case ROFF_while:
1.2 schwarze 1988: break;
1989: default:
1.222 schwarze 1990: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.212 schwarze 1991: return 0;
1.2 schwarze 1992: }
1.1 schwarze 1993:
1.2 schwarze 1994: if (r->last->endspan > -1) {
1.222 schwarze 1995: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.212 schwarze 1996: return 0;
1.2 schwarze 1997: }
1998:
1.212 schwarze 1999: return roffnode_pop(r) + roffnode_cleanscope(r);
1.1 schwarze 2000: }
2001:
1.212 schwarze 2002: static int
1.2 schwarze 2003: roff_block(ROFF_ARGS)
1.1 schwarze 2004: {
1.187 schwarze 2005: const char *name, *value;
2006: char *call, *cp, *iname, *rname;
2007: size_t csz, namesz, rsz;
2008: int deftype;
1.16 schwarze 2009:
1.93 schwarze 2010: /* Ignore groff compatibility mode for now. */
1.2 schwarze 2011:
1.110 schwarze 2012: if (tok == ROFF_de1)
1.93 schwarze 2013: tok = ROFF_de;
1.123 schwarze 2014: else if (tok == ROFF_dei1)
2015: tok = ROFF_dei;
1.110 schwarze 2016: else if (tok == ROFF_am1)
1.93 schwarze 2017: tok = ROFF_am;
1.123 schwarze 2018: else if (tok == ROFF_ami1)
2019: tok = ROFF_ami;
1.93 schwarze 2020:
2021: /* Parse the macro name argument. */
2022:
1.110 schwarze 2023: cp = buf->buf + pos;
2024: if (tok == ROFF_ig) {
1.93 schwarze 2025: iname = NULL;
2026: namesz = 0;
2027: } else {
2028: iname = cp;
2029: namesz = roff_getname(r, &cp, ln, ppos);
2030: iname[namesz] = '\0';
2031: }
1.22 schwarze 2032:
1.93 schwarze 2033: /* Resolve the macro name argument if it is indirect. */
1.22 schwarze 2034:
1.110 schwarze 2035: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.187 schwarze 2036: deftype = ROFFDEF_USER;
2037: name = roff_getstrn(r, iname, namesz, &deftype);
2038: if (name == NULL) {
1.222 schwarze 2039: mandoc_msg(MANDOCERR_STR_UNDEF,
2040: ln, (int)(iname - buf->buf),
1.93 schwarze 2041: "%.*s", (int)namesz, iname);
2042: namesz = 0;
2043: } else
2044: namesz = strlen(name);
2045: } else
2046: name = iname;
1.22 schwarze 2047:
1.110 schwarze 2048: if (namesz == 0 && tok != ROFF_ig) {
1.222 schwarze 2049: mandoc_msg(MANDOCERR_REQ_EMPTY,
2050: ln, ppos, "%s", roff_name[tok]);
1.149 schwarze 2051: return ROFF_IGN;
1.93 schwarze 2052: }
1.2 schwarze 2053:
1.16 schwarze 2054: roffnode_push(r, tok, name, ln, ppos);
2055:
2056: /*
2057: * At the beginning of a `de' macro, clear the existing string
2058: * with the same name, if there is one. New content will be
1.66 schwarze 2059: * appended from roff_block_text() in multiline mode.
1.16 schwarze 2060: */
1.22 schwarze 2061:
1.183 schwarze 2062: if (tok == ROFF_de || tok == ROFF_dei) {
1.86 schwarze 2063: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.183 schwarze 2064: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.187 schwarze 2065: } else if (tok == ROFF_am || tok == ROFF_ami) {
2066: deftype = ROFFDEF_ANY;
2067: value = roff_getstrn(r, iname, namesz, &deftype);
2068: switch (deftype) { /* Before appending, ... */
2069: case ROFFDEF_PRE: /* copy predefined to user-defined. */
2070: roff_setstrn(&r->strtab, name, namesz,
2071: value, strlen(value), 0);
2072: break;
2073: case ROFFDEF_REN: /* call original standard macro. */
2074: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2075: (int)strlen(value), value);
2076: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2077: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
2078: free(call);
2079: break;
2080: case ROFFDEF_STD: /* rename and call standard macro. */
2081: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
2082: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
2083: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
2084: (int)rsz, rname);
2085: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
2086: free(call);
2087: free(rname);
2088: break;
2089: default:
2090: break;
2091: }
1.183 schwarze 2092: }
1.2 schwarze 2093:
1.110 schwarze 2094: if (*cp == '\0')
1.149 schwarze 2095: return ROFF_IGN;
1.1 schwarze 2096:
1.93 schwarze 2097: /* Get the custom end marker. */
1.22 schwarze 2098:
1.93 schwarze 2099: iname = cp;
1.86 schwarze 2100: namesz = roff_getname(r, &cp, ln, ppos);
1.93 schwarze 2101:
2102: /* Resolve the end marker if it is indirect. */
2103:
1.110 schwarze 2104: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.187 schwarze 2105: deftype = ROFFDEF_USER;
2106: name = roff_getstrn(r, iname, namesz, &deftype);
2107: if (name == NULL) {
1.222 schwarze 2108: mandoc_msg(MANDOCERR_STR_UNDEF,
2109: ln, (int)(iname - buf->buf),
1.93 schwarze 2110: "%.*s", (int)namesz, iname);
2111: namesz = 0;
2112: } else
2113: namesz = strlen(name);
2114: } else
2115: name = iname;
2116:
1.86 schwarze 2117: if (namesz)
2118: r->last->end = mandoc_strndup(name, namesz);
1.2 schwarze 2119:
1.110 schwarze 2120: if (*cp != '\0')
1.222 schwarze 2121: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.167 schwarze 2122: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.1 schwarze 2123:
1.149 schwarze 2124: return ROFF_IGN;
1.1 schwarze 2125: }
2126:
1.212 schwarze 2127: static int
1.2 schwarze 2128: roff_block_sub(ROFF_ARGS)
1.1 schwarze 2129: {
1.166 schwarze 2130: enum roff_tok t;
1.2 schwarze 2131: int i, j;
2132:
2133: /*
2134: * First check whether a custom macro exists at this level. If
2135: * it does, then check against it. This is some of groff's
2136: * stranger behaviours. If we encountered a custom end-scope
2137: * tag and that tag also happens to be a "real" macro, then we
2138: * need to try interpreting it again as a real macro. If it's
2139: * not, then return ignore. Else continue.
2140: */
2141:
2142: if (r->last->end) {
1.35 schwarze 2143: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.110 schwarze 2144: if (buf->buf[i] != r->last->end[j])
1.2 schwarze 2145: break;
1.1 schwarze 2146:
1.110 schwarze 2147: if (r->last->end[j] == '\0' &&
2148: (buf->buf[i] == '\0' ||
2149: buf->buf[i] == ' ' ||
2150: buf->buf[i] == '\t')) {
1.2 schwarze 2151: roffnode_pop(r);
2152: roffnode_cleanscope(r);
1.1 schwarze 2153:
1.110 schwarze 2154: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.35 schwarze 2155: i++;
2156:
2157: pos = i;
1.110 schwarze 2158: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.166 schwarze 2159: TOKEN_NONE)
1.149 schwarze 2160: return ROFF_RERUN;
2161: return ROFF_IGN;
1.2 schwarze 2162: }
1.1 schwarze 2163: }
2164:
1.2 schwarze 2165: /*
2166: * If we have no custom end-query or lookup failed, then try
2167: * pulling it out of the hashtable.
2168: */
1.1 schwarze 2169:
1.110 schwarze 2170: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.1 schwarze 2171:
1.110 schwarze 2172: if (t != ROFF_cblock) {
2173: if (tok != ROFF_ig)
2174: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.149 schwarze 2175: return ROFF_IGN;
1.16 schwarze 2176: }
1.1 schwarze 2177:
1.149 schwarze 2178: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.2 schwarze 2179: }
2180:
1.212 schwarze 2181: static int
1.2 schwarze 2182: roff_block_text(ROFF_ARGS)
2183: {
2184:
1.110 schwarze 2185: if (tok != ROFF_ig)
2186: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.16 schwarze 2187:
1.149 schwarze 2188: return ROFF_IGN;
1.2 schwarze 2189: }
2190:
1.212 schwarze 2191: static int
1.2 schwarze 2192: roff_cond_sub(ROFF_ARGS)
2193: {
1.212 schwarze 2194: char *ep;
2195: int endloop, irc, rr;
1.166 schwarze 2196: enum roff_tok t;
1.2 schwarze 2197:
1.212 schwarze 2198: irc = ROFF_IGN;
1.2 schwarze 2199: rr = r->last->rule;
1.212 schwarze 2200: endloop = tok != ROFF_while ? ROFF_IGN :
2201: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2202: if (roffnode_cleanscope(r))
2203: irc |= endloop;
1.39 schwarze 2204:
1.69 schwarze 2205: /*
2206: * If `\}' occurs on a macro line without a preceding macro,
2207: * drop the line completely.
2208: */
2209:
1.110 schwarze 2210: ep = buf->buf + pos;
2211: if (ep[0] == '\\' && ep[1] == '}')
1.71 schwarze 2212: rr = 0;
1.69 schwarze 2213:
1.215 schwarze 2214: /*
2215: * The closing delimiter `\}' rewinds the conditional scope
2216: * but is otherwise ignored when interpreting the line.
2217: */
1.39 schwarze 2218:
1.110 schwarze 2219: while ((ep = strchr(ep, '\\')) != NULL) {
1.190 schwarze 2220: switch (ep[1]) {
2221: case '}':
2222: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1.212 schwarze 2223: if (roff_ccond(r, ln, ep - buf->buf))
2224: irc |= endloop;
1.190 schwarze 2225: break;
2226: case '\0':
2227: ++ep;
2228: break;
2229: default:
2230: ep += 2;
2231: break;
1.70 schwarze 2232: }
1.50 schwarze 2233: }
1.190 schwarze 2234:
2235: /*
2236: * Fully handle known macros when they are structurally
2237: * required or when the conditional evaluated to true.
2238: */
2239:
2240: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.212 schwarze 2241: irc |= t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT) ?
2242: (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs) :
2243: rr ? ROFF_CONT : ROFF_IGN;
2244: return irc;
1.2 schwarze 2245: }
2246:
1.212 schwarze 2247: static int
1.2 schwarze 2248: roff_cond_text(ROFF_ARGS)
2249: {
1.37 schwarze 2250: char *ep;
1.212 schwarze 2251: int endloop, irc, rr;
1.2 schwarze 2252:
1.212 schwarze 2253: irc = ROFF_IGN;
1.2 schwarze 2254: rr = r->last->rule;
1.212 schwarze 2255: endloop = tok != ROFF_while ? ROFF_IGN :
2256: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2257: if (roffnode_cleanscope(r))
2258: irc |= endloop;
1.1 schwarze 2259:
1.215 schwarze 2260: /*
2261: * If `\}' occurs on a text line with neither preceding
2262: * nor following characters, drop the line completely.
2263: */
2264:
1.110 schwarze 2265: ep = buf->buf + pos;
1.215 schwarze 2266: if (strcmp(ep, "\\}") == 0)
2267: rr = 0;
2268:
2269: /*
2270: * The closing delimiter `\}' rewinds the conditional scope
2271: * but is otherwise ignored when interpreting the line.
2272: */
2273:
1.110 schwarze 2274: while ((ep = strchr(ep, '\\')) != NULL) {
1.215 schwarze 2275: switch (ep[1]) {
2276: case '}':
2277: memmove(ep, ep + 2, strlen(ep + 2) + 1);
2278: if (roff_ccond(r, ln, ep - buf->buf))
1.212 schwarze 2279: irc |= endloop;
1.215 schwarze 2280: break;
2281: case '\0':
2282: ++ep;
2283: break;
2284: default:
2285: ep += 2;
2286: break;
1.70 schwarze 2287: }
1.2 schwarze 2288: }
1.212 schwarze 2289: if (rr)
2290: irc |= ROFF_CONT;
2291: return irc;
1.2 schwarze 2292: }
2293:
1.138 schwarze 2294: /* --- handling of numeric and conditional expressions -------------------- */
2295:
1.77 schwarze 2296: /*
2297: * Parse a single signed integer number. Stop at the first non-digit.
2298: * If there is at least one digit, return success and advance the
2299: * parse point, else return failure and let the parse point unchanged.
2300: * Ignore overflows, treat them just like the C language.
2301: */
1.56 schwarze 2302: static int
1.133 schwarze 2303: roff_getnum(const char *v, int *pos, int *res, int flags)
1.56 schwarze 2304: {
1.133 schwarze 2305: int myres, scaled, n, p;
1.79 schwarze 2306:
2307: if (NULL == res)
2308: res = &myres;
1.56 schwarze 2309:
2310: p = *pos;
2311: n = v[p] == '-';
1.133 schwarze 2312: if (n || v[p] == '+')
1.56 schwarze 2313: p++;
2314:
1.133 schwarze 2315: if (flags & ROFFNUM_WHITE)
2316: while (isspace((unsigned char)v[p]))
2317: p++;
2318:
1.56 schwarze 2319: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.77 schwarze 2320: *res = 10 * *res + v[p] - '0';
1.56 schwarze 2321: if (p == *pos + n)
2322: return 0;
2323:
2324: if (n)
2325: *res = -*res;
2326:
1.126 schwarze 2327: /* Each number may be followed by one optional scaling unit. */
2328:
2329: switch (v[p]) {
2330: case 'f':
1.133 schwarze 2331: scaled = *res * 65536;
1.126 schwarze 2332: break;
2333: case 'i':
1.133 schwarze 2334: scaled = *res * 240;
1.126 schwarze 2335: break;
2336: case 'c':
1.133 schwarze 2337: scaled = *res * 240 / 2.54;
1.126 schwarze 2338: break;
2339: case 'v':
2340: case 'P':
1.133 schwarze 2341: scaled = *res * 40;
1.126 schwarze 2342: break;
2343: case 'm':
2344: case 'n':
1.133 schwarze 2345: scaled = *res * 24;
1.126 schwarze 2346: break;
2347: case 'p':
1.133 schwarze 2348: scaled = *res * 10 / 3;
1.126 schwarze 2349: break;
2350: case 'u':
1.133 schwarze 2351: scaled = *res;
1.126 schwarze 2352: break;
2353: case 'M':
1.133 schwarze 2354: scaled = *res * 6 / 25;
1.126 schwarze 2355: break;
2356: default:
1.133 schwarze 2357: scaled = *res;
1.126 schwarze 2358: p--;
2359: break;
2360: }
1.133 schwarze 2361: if (flags & ROFFNUM_SCALE)
2362: *res = scaled;
1.126 schwarze 2363:
2364: *pos = p + 1;
1.149 schwarze 2365: return 1;
1.56 schwarze 2366: }
2367:
1.71 schwarze 2368: /*
2369: * Evaluate a string comparison condition.
2370: * The first character is the delimiter.
2371: * Succeed if the string up to its second occurrence
2372: * matches the string up to its third occurence.
2373: * Advance the cursor after the third occurrence
2374: * or lacking that, to the end of the line.
2375: */
2376: static int
2377: roff_evalstrcond(const char *v, int *pos)
2378: {
2379: const char *s1, *s2, *s3;
2380: int match;
2381:
2382: match = 0;
2383: s1 = v + *pos; /* initial delimiter */
2384: s2 = s1 + 1; /* for scanning the first string */
2385: s3 = strchr(s2, *s1); /* for scanning the second string */
2386:
2387: if (NULL == s3) /* found no middle delimiter */
2388: goto out;
2389:
2390: while ('\0' != *++s3) {
2391: if (*s2 != *s3) { /* mismatch */
2392: s3 = strchr(s3, *s1);
2393: break;
2394: }
2395: if (*s3 == *s1) { /* found the final delimiter */
2396: match = 1;
2397: break;
2398: }
2399: s2++;
2400: }
2401:
2402: out:
2403: if (NULL == s3)
2404: s3 = strchr(s2, '\0');
1.114 schwarze 2405: else if (*s3 != '\0')
1.71 schwarze 2406: s3++;
2407: *pos = s3 - v;
1.149 schwarze 2408: return match;
1.71 schwarze 2409: }
2410:
1.77 schwarze 2411: /*
2412: * Evaluate an optionally negated single character, numerical,
2413: * or string condition.
2414: */
1.71 schwarze 2415: static int
1.143 schwarze 2416: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.5 schwarze 2417: {
1.208 schwarze 2418: const char *start, *end;
2419: char *cp, *name;
2420: size_t sz;
2421: int deftype, len, number, savepos, istrue, wanttrue;
1.5 schwarze 2422:
1.71 schwarze 2423: if ('!' == v[*pos]) {
2424: wanttrue = 0;
2425: (*pos)++;
2426: } else
2427: wanttrue = 1;
2428:
1.5 schwarze 2429: switch (v[*pos]) {
1.112 schwarze 2430: case '\0':
1.149 schwarze 2431: return 0;
1.80 schwarze 2432: case 'n':
2433: case 'o':
1.5 schwarze 2434: (*pos)++;
1.149 schwarze 2435: return wanttrue;
1.80 schwarze 2436: case 'e':
2437: case 't':
1.111 schwarze 2438: case 'v':
1.5 schwarze 2439: (*pos)++;
1.149 schwarze 2440: return !wanttrue;
1.208 schwarze 2441: case 'c':
2442: do {
2443: (*pos)++;
2444: } while (v[*pos] == ' ');
2445:
2446: /*
2447: * Quirk for groff compatibility:
2448: * The horizontal tab is neither available nor unavailable.
2449: */
2450:
2451: if (v[*pos] == '\t') {
2452: (*pos)++;
2453: return 0;
2454: }
2455:
2456: /* Printable ASCII characters are available. */
2457:
2458: if (v[*pos] != '\\') {
2459: (*pos)++;
2460: return wanttrue;
2461: }
2462:
2463: end = v + ++*pos;
2464: switch (mandoc_escape(&end, &start, &len)) {
2465: case ESCAPE_SPECIAL:
2466: istrue = mchars_spec2cp(start, len) != -1;
2467: break;
2468: case ESCAPE_UNICODE:
2469: istrue = 1;
2470: break;
2471: case ESCAPE_NUMBERED:
2472: istrue = mchars_num2char(start, len) != -1;
2473: break;
2474: default:
2475: istrue = !wanttrue;
2476: break;
2477: }
2478: *pos = end - v;
2479: return istrue == wanttrue;
1.182 schwarze 2480: case 'd':
1.143 schwarze 2481: case 'r':
1.182 schwarze 2482: cp = v + *pos + 1;
2483: while (*cp == ' ')
2484: cp++;
2485: name = cp;
2486: sz = roff_getname(r, &cp, ln, cp - v);
1.187 schwarze 2487: if (sz == 0)
2488: istrue = 0;
2489: else if (v[*pos] == 'r')
2490: istrue = roff_hasregn(r, name, sz);
2491: else {
2492: deftype = ROFFDEF_ANY;
2493: roff_getstrn(r, name, sz, &deftype);
2494: istrue = !!deftype;
2495: }
1.143 schwarze 2496: *pos = cp - v;
1.182 schwarze 2497: return istrue == wanttrue;
1.5 schwarze 2498: default:
2499: break;
2500: }
2501:
1.113 schwarze 2502: savepos = *pos;
1.133 schwarze 2503: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.149 schwarze 2504: return (number > 0) == wanttrue;
1.113 schwarze 2505: else if (*pos == savepos)
1.149 schwarze 2506: return roff_evalstrcond(v, pos) == wanttrue;
1.77 schwarze 2507: else
1.149 schwarze 2508: return 0;
1.5 schwarze 2509: }
2510:
1.212 schwarze 2511: static int
1.21 schwarze 2512: roff_line_ignore(ROFF_ARGS)
1.6 schwarze 2513: {
1.30 schwarze 2514:
1.149 schwarze 2515: return ROFF_IGN;
1.21 schwarze 2516: }
2517:
1.212 schwarze 2518: static int
1.123 schwarze 2519: roff_insec(ROFF_ARGS)
2520: {
2521:
1.222 schwarze 2522: mandoc_msg(MANDOCERR_REQ_INSEC, ln, ppos, "%s", roff_name[tok]);
1.149 schwarze 2523: return ROFF_IGN;
1.123 schwarze 2524: }
2525:
1.212 schwarze 2526: static int
1.123 schwarze 2527: roff_unsupp(ROFF_ARGS)
2528: {
2529:
1.222 schwarze 2530: mandoc_msg(MANDOCERR_REQ_UNSUPP, ln, ppos, "%s", roff_name[tok]);
1.149 schwarze 2531: return ROFF_IGN;
1.123 schwarze 2532: }
2533:
1.212 schwarze 2534: static int
1.2 schwarze 2535: roff_cond(ROFF_ARGS)
2536: {
1.212 schwarze 2537: int irc;
1.46 schwarze 2538:
2539: roffnode_push(r, tok, NULL, ln, ppos);
1.2 schwarze 2540:
1.80 schwarze 2541: /*
1.35 schwarze 2542: * An `.el' has no conditional body: it will consume the value
2543: * of the current rstack entry set in prior `ie' calls or
1.80 schwarze 2544: * defaults to DENY.
1.35 schwarze 2545: *
2546: * If we're not an `el', however, then evaluate the conditional.
2547: */
1.1 schwarze 2548:
1.110 schwarze 2549: r->last->rule = tok == ROFF_el ?
1.80 schwarze 2550: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.110 schwarze 2551: roff_evalcond(r, ln, buf->buf, &pos);
1.2 schwarze 2552:
1.35 schwarze 2553: /*
2554: * An if-else will put the NEGATION of the current evaluated
2555: * conditional into the stack of rules.
2556: */
2557:
1.110 schwarze 2558: if (tok == ROFF_ie) {
1.96 schwarze 2559: if (r->rstackpos + 1 == r->rstacksz) {
2560: r->rstacksz += 16;
2561: r->rstack = mandoc_reallocarray(r->rstack,
2562: r->rstacksz, sizeof(int));
1.35 schwarze 2563: }
1.71 schwarze 2564: r->rstack[++r->rstackpos] = !r->last->rule;
1.2 schwarze 2565: }
1.5 schwarze 2566:
2567: /* If the parent has false as its rule, then so do we. */
2568:
1.71 schwarze 2569: if (r->last->parent && !r->last->parent->rule)
2570: r->last->rule = 0;
1.5 schwarze 2571:
2572: /*
1.46 schwarze 2573: * Determine scope.
2574: * If there is nothing on the line after the conditional,
2575: * not even whitespace, use next-line scope.
1.212 schwarze 2576: * Except that .while does not support next-line scope.
1.5 schwarze 2577: */
1.2 schwarze 2578:
1.212 schwarze 2579: if (buf->buf[pos] == '\0' && tok != ROFF_while) {
1.46 schwarze 2580: r->last->endspan = 2;
2581: goto out;
2582: }
2583:
1.110 schwarze 2584: while (buf->buf[pos] == ' ')
1.46 schwarze 2585: pos++;
2586:
2587: /* An opening brace requests multiline scope. */
1.2 schwarze 2588:
1.110 schwarze 2589: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.2 schwarze 2590: r->last->endspan = -1;
2591: pos += 2;
1.144 schwarze 2592: while (buf->buf[pos] == ' ')
2593: pos++;
1.46 schwarze 2594: goto out;
1.80 schwarze 2595: }
1.2 schwarze 2596:
2597: /*
1.46 schwarze 2598: * Anything else following the conditional causes
2599: * single-line scope. Warn if the scope contains
2600: * nothing but trailing whitespace.
1.2 schwarze 2601: */
2602:
1.110 schwarze 2603: if (buf->buf[pos] == '\0')
1.222 schwarze 2604: mandoc_msg(MANDOCERR_COND_EMPTY,
2605: ln, ppos, "%s", roff_name[tok]);
1.2 schwarze 2606:
1.46 schwarze 2607: r->last->endspan = 1;
1.1 schwarze 2608:
1.46 schwarze 2609: out:
1.2 schwarze 2610: *offs = pos;
1.212 schwarze 2611: irc = ROFF_RERUN;
2612: if (tok == ROFF_while)
2613: irc |= ROFF_WHILE;
2614: return irc;
1.1 schwarze 2615: }
2616:
1.212 schwarze 2617: static int
1.7 schwarze 2618: roff_ds(ROFF_ARGS)
2619: {
1.85 schwarze 2620: char *string;
2621: const char *name;
2622: size_t namesz;
1.10 schwarze 2623:
1.123 schwarze 2624: /* Ignore groff compatibility mode for now. */
2625:
2626: if (tok == ROFF_ds1)
2627: tok = ROFF_ds;
2628: else if (tok == ROFF_as1)
2629: tok = ROFF_as;
2630:
1.10 schwarze 2631: /*
1.85 schwarze 2632: * The first word is the name of the string.
2633: * If it is empty or terminated by an escape sequence,
2634: * abort the `ds' request without defining anything.
1.10 schwarze 2635: */
1.7 schwarze 2636:
1.110 schwarze 2637: name = string = buf->buf + pos;
2638: if (*name == '\0')
1.149 schwarze 2639: return ROFF_IGN;
1.7 schwarze 2640:
1.85 schwarze 2641: namesz = roff_getname(r, &string, ln, pos);
1.110 schwarze 2642: if (name[namesz] == '\\')
1.149 schwarze 2643: return ROFF_IGN;
1.85 schwarze 2644:
2645: /* Read past the initial double-quote, if any. */
1.110 schwarze 2646: if (*string == '"')
1.7 schwarze 2647: string++;
2648:
1.10 schwarze 2649: /* The rest is the value. */
1.85 schwarze 2650: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2651: ROFF_as == tok);
1.183 schwarze 2652: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.149 schwarze 2653: return ROFF_IGN;
1.7 schwarze 2654: }
2655:
1.77 schwarze 2656: /*
2657: * Parse a single operator, one or two characters long.
2658: * If the operator is recognized, return success and advance the
2659: * parse point, else return failure and let the parse point unchanged.
2660: */
2661: static int
2662: roff_getop(const char *v, int *pos, char *res)
2663: {
2664:
2665: *res = v[*pos];
2666:
2667: switch (*res) {
1.80 schwarze 2668: case '+':
2669: case '-':
2670: case '*':
2671: case '/':
2672: case '%':
2673: case '&':
2674: case ':':
1.77 schwarze 2675: break;
2676: case '<':
2677: switch (v[*pos + 1]) {
1.80 schwarze 2678: case '=':
1.77 schwarze 2679: *res = 'l';
2680: (*pos)++;
2681: break;
1.80 schwarze 2682: case '>':
1.77 schwarze 2683: *res = '!';
2684: (*pos)++;
2685: break;
1.80 schwarze 2686: case '?':
1.77 schwarze 2687: *res = 'i';
2688: (*pos)++;
2689: break;
2690: default:
2691: break;
2692: }
2693: break;
2694: case '>':
2695: switch (v[*pos + 1]) {
1.80 schwarze 2696: case '=':
1.77 schwarze 2697: *res = 'g';
2698: (*pos)++;
2699: break;
1.80 schwarze 2700: case '?':
1.77 schwarze 2701: *res = 'a';
2702: (*pos)++;
2703: break;
2704: default:
2705: break;
2706: }
2707: break;
2708: case '=':
2709: if ('=' == v[*pos + 1])
2710: (*pos)++;
2711: break;
2712: default:
1.149 schwarze 2713: return 0;
1.77 schwarze 2714: }
2715: (*pos)++;
2716:
1.149 schwarze 2717: return *res;
1.77 schwarze 2718: }
2719:
2720: /*
2721: * Evaluate either a parenthesized numeric expression
2722: * or a single signed integer number.
2723: */
2724: static int
1.106 schwarze 2725: roff_evalpar(struct roff *r, int ln,
1.133 schwarze 2726: const char *v, int *pos, int *res, int flags)
1.77 schwarze 2727: {
2728:
2729: if ('(' != v[*pos])
1.149 schwarze 2730: return roff_getnum(v, pos, res, flags);
1.77 schwarze 2731:
2732: (*pos)++;
1.133 schwarze 2733: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.149 schwarze 2734: return 0;
1.77 schwarze 2735:
1.79 schwarze 2736: /*
2737: * Omission of the closing parenthesis
2738: * is an error in validation mode,
2739: * but ignored in evaluation mode.
2740: */
2741:
1.77 schwarze 2742: if (')' == v[*pos])
2743: (*pos)++;
1.79 schwarze 2744: else if (NULL == res)
1.149 schwarze 2745: return 0;
1.77 schwarze 2746:
1.149 schwarze 2747: return 1;
1.77 schwarze 2748: }
2749:
2750: /*
2751: * Evaluate a complete numeric expression.
2752: * Proceed left to right, there is no concept of precedence.
2753: */
2754: static int
1.106 schwarze 2755: roff_evalnum(struct roff *r, int ln, const char *v,
1.133 schwarze 2756: int *pos, int *res, int flags)
1.77 schwarze 2757: {
2758: int mypos, operand2;
2759: char operator;
2760:
2761: if (NULL == pos) {
2762: mypos = 0;
2763: pos = &mypos;
2764: }
2765:
1.133 schwarze 2766: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2767: while (isspace((unsigned char)v[*pos]))
2768: (*pos)++;
2769:
1.133 schwarze 2770: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.149 schwarze 2771: return 0;
1.77 schwarze 2772:
2773: while (1) {
1.133 schwarze 2774: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2775: while (isspace((unsigned char)v[*pos]))
2776: (*pos)++;
2777:
2778: if ( ! roff_getop(v, pos, &operator))
2779: break;
2780:
1.133 schwarze 2781: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2782: while (isspace((unsigned char)v[*pos]))
2783: (*pos)++;
2784:
1.133 schwarze 2785: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.149 schwarze 2786: return 0;
1.77 schwarze 2787:
1.133 schwarze 2788: if (flags & ROFFNUM_WHITE)
1.77 schwarze 2789: while (isspace((unsigned char)v[*pos]))
2790: (*pos)++;
1.79 schwarze 2791:
2792: if (NULL == res)
2793: continue;
1.77 schwarze 2794:
2795: switch (operator) {
1.80 schwarze 2796: case '+':
1.77 schwarze 2797: *res += operand2;
2798: break;
1.80 schwarze 2799: case '-':
1.77 schwarze 2800: *res -= operand2;
2801: break;
1.80 schwarze 2802: case '*':
1.77 schwarze 2803: *res *= operand2;
2804: break;
1.80 schwarze 2805: case '/':
1.116 schwarze 2806: if (operand2 == 0) {
1.106 schwarze 2807: mandoc_msg(MANDOCERR_DIVZERO,
1.222 schwarze 2808: ln, *pos, "%s", v);
1.106 schwarze 2809: *res = 0;
2810: break;
2811: }
1.77 schwarze 2812: *res /= operand2;
2813: break;
1.80 schwarze 2814: case '%':
1.116 schwarze 2815: if (operand2 == 0) {
2816: mandoc_msg(MANDOCERR_DIVZERO,
1.222 schwarze 2817: ln, *pos, "%s", v);
1.116 schwarze 2818: *res = 0;
2819: break;
2820: }
1.77 schwarze 2821: *res %= operand2;
2822: break;
1.80 schwarze 2823: case '<':
1.77 schwarze 2824: *res = *res < operand2;
2825: break;
1.80 schwarze 2826: case '>':
1.77 schwarze 2827: *res = *res > operand2;
2828: break;
1.80 schwarze 2829: case 'l':
1.77 schwarze 2830: *res = *res <= operand2;
2831: break;
1.80 schwarze 2832: case 'g':
1.77 schwarze 2833: *res = *res >= operand2;
2834: break;
1.80 schwarze 2835: case '=':
1.77 schwarze 2836: *res = *res == operand2;
2837: break;
1.80 schwarze 2838: case '!':
1.77 schwarze 2839: *res = *res != operand2;
2840: break;
1.80 schwarze 2841: case '&':
1.77 schwarze 2842: *res = *res && operand2;
2843: break;
1.80 schwarze 2844: case ':':
1.77 schwarze 2845: *res = *res || operand2;
2846: break;
1.80 schwarze 2847: case 'i':
1.77 schwarze 2848: if (operand2 < *res)
2849: *res = operand2;
2850: break;
1.80 schwarze 2851: case 'a':
1.77 schwarze 2852: if (operand2 > *res)
2853: *res = operand2;
2854: break;
2855: default:
2856: abort();
2857: }
2858: }
1.149 schwarze 2859: return 1;
1.77 schwarze 2860: }
2861:
1.138 schwarze 2862: /* --- register management ------------------------------------------------ */
2863:
1.52 schwarze 2864: void
1.60 schwarze 2865: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.41 schwarze 2866: {
1.199 schwarze 2867: roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
1.198 schwarze 2868: }
2869:
2870: static void
2871: roff_setregn(struct roff *r, const char *name, size_t len,
1.199 schwarze 2872: int val, char sign, int step)
1.198 schwarze 2873: {
1.52 schwarze 2874: struct roffreg *reg;
2875:
2876: /* Search for an existing register with the same name. */
2877: reg = r->regtab;
2878:
1.198 schwarze 2879: while (reg != NULL && (reg->key.sz != len ||
2880: strncmp(reg->key.p, name, len) != 0))
1.52 schwarze 2881: reg = reg->next;
1.41 schwarze 2882:
1.52 schwarze 2883: if (NULL == reg) {
2884: /* Create a new register. */
2885: reg = mandoc_malloc(sizeof(struct roffreg));
1.198 schwarze 2886: reg->key.p = mandoc_strndup(name, len);
2887: reg->key.sz = len;
1.60 schwarze 2888: reg->val = 0;
1.199 schwarze 2889: reg->step = 0;
1.52 schwarze 2890: reg->next = r->regtab;
2891: r->regtab = reg;
2892: }
2893:
1.60 schwarze 2894: if ('+' == sign)
2895: reg->val += val;
2896: else if ('-' == sign)
2897: reg->val -= val;
2898: else
2899: reg->val = val;
1.199 schwarze 2900: if (step != INT_MIN)
2901: reg->step = step;
1.41 schwarze 2902: }
2903:
1.65 schwarze 2904: /*
2905: * Handle some predefined read-only number registers.
2906: * For now, return -1 if the requested register is not predefined;
2907: * in case a predefined read-only register having the value -1
2908: * were to turn up, another special value would have to be chosen.
2909: */
2910: static int
1.145 schwarze 2911: roff_getregro(const struct roff *r, const char *name)
1.65 schwarze 2912: {
2913:
2914: switch (*name) {
1.145 schwarze 2915: case '$': /* Number of arguments of the last macro evaluated. */
1.211 schwarze 2916: return r->mstackpos < 0 ? 0 : r->mstack[r->mstackpos].argc;
1.80 schwarze 2917: case 'A': /* ASCII approximation mode is always off. */
1.149 schwarze 2918: return 0;
1.80 schwarze 2919: case 'g': /* Groff compatibility mode is always on. */
1.149 schwarze 2920: return 1;
1.80 schwarze 2921: case 'H': /* Fixed horizontal resolution. */
1.149 schwarze 2922: return 24;
1.80 schwarze 2923: case 'j': /* Always adjust left margin only. */
1.149 schwarze 2924: return 0;
1.80 schwarze 2925: case 'T': /* Some output device is always defined. */
1.149 schwarze 2926: return 1;
1.80 schwarze 2927: case 'V': /* Fixed vertical resolution. */
1.149 schwarze 2928: return 40;
1.65 schwarze 2929: default:
1.149 schwarze 2930: return -1;
1.65 schwarze 2931: }
2932: }
2933:
1.53 schwarze 2934: int
1.198 schwarze 2935: roff_getreg(struct roff *r, const char *name)
1.41 schwarze 2936: {
1.199 schwarze 2937: return roff_getregn(r, name, strlen(name), '\0');
1.53 schwarze 2938: }
2939:
2940: static int
1.199 schwarze 2941: roff_getregn(struct roff *r, const char *name, size_t len, char sign)
1.53 schwarze 2942: {
2943: struct roffreg *reg;
1.65 schwarze 2944: int val;
2945:
2946: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2947: val = roff_getregro(r, name + 1);
1.65 schwarze 2948: if (-1 != val)
1.149 schwarze 2949: return val;
1.65 schwarze 2950: }
1.53 schwarze 2951:
1.199 schwarze 2952: for (reg = r->regtab; reg; reg = reg->next) {
1.53 schwarze 2953: if (len == reg->key.sz &&
1.199 schwarze 2954: 0 == strncmp(name, reg->key.p, len)) {
2955: switch (sign) {
2956: case '+':
2957: reg->val += reg->step;
2958: break;
2959: case '-':
2960: reg->val -= reg->step;
2961: break;
2962: default:
2963: break;
2964: }
1.149 schwarze 2965: return reg->val;
1.199 schwarze 2966: }
2967: }
1.143 schwarze 2968:
1.199 schwarze 2969: roff_setregn(r, name, len, 0, '\0', INT_MIN);
1.149 schwarze 2970: return 0;
1.143 schwarze 2971: }
2972:
2973: static int
2974: roff_hasregn(const struct roff *r, const char *name, size_t len)
2975: {
2976: struct roffreg *reg;
2977: int val;
2978:
2979: if ('.' == name[0] && 2 == len) {
1.145 schwarze 2980: val = roff_getregro(r, name + 1);
1.143 schwarze 2981: if (-1 != val)
1.149 schwarze 2982: return 1;
1.143 schwarze 2983: }
2984:
2985: for (reg = r->regtab; reg; reg = reg->next)
2986: if (len == reg->key.sz &&
2987: 0 == strncmp(name, reg->key.p, len))
1.149 schwarze 2988: return 1;
1.41 schwarze 2989:
1.149 schwarze 2990: return 0;
1.41 schwarze 2991: }
2992:
1.52 schwarze 2993: static void
2994: roff_freereg(struct roffreg *reg)
1.41 schwarze 2995: {
1.52 schwarze 2996: struct roffreg *old_reg;
1.41 schwarze 2997:
1.52 schwarze 2998: while (NULL != reg) {
2999: free(reg->key.p);
3000: old_reg = reg;
3001: reg = reg->next;
3002: free(old_reg);
3003: }
1.41 schwarze 3004: }
1.7 schwarze 3005:
1.212 schwarze 3006: static int
1.6 schwarze 3007: roff_nr(ROFF_ARGS)
1.1 schwarze 3008: {
1.199 schwarze 3009: char *key, *val, *step;
1.85 schwarze 3010: size_t keysz;
1.199 schwarze 3011: int iv, is, len;
1.60 schwarze 3012: char sign;
1.6 schwarze 3013:
1.110 schwarze 3014: key = val = buf->buf + pos;
3015: if (*key == '\0')
1.149 schwarze 3016: return ROFF_IGN;
1.85 schwarze 3017:
3018: keysz = roff_getname(r, &val, ln, pos);
1.110 schwarze 3019: if (key[keysz] == '\\')
1.149 schwarze 3020: return ROFF_IGN;
1.6 schwarze 3021:
1.60 schwarze 3022: sign = *val;
1.110 schwarze 3023: if (sign == '+' || sign == '-')
1.60 schwarze 3024: val++;
3025:
1.199 schwarze 3026: len = 0;
3027: if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
3028: return ROFF_IGN;
3029:
3030: step = val + len;
3031: while (isspace((unsigned char)*step))
3032: step++;
3033: if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)
3034: is = INT_MIN;
1.1 schwarze 3035:
1.199 schwarze 3036: roff_setregn(r, key, keysz, iv, sign, is);
1.149 schwarze 3037: return ROFF_IGN;
1.76 schwarze 3038: }
3039:
1.212 schwarze 3040: static int
1.76 schwarze 3041: roff_rr(ROFF_ARGS)
3042: {
3043: struct roffreg *reg, **prev;
1.85 schwarze 3044: char *name, *cp;
3045: size_t namesz;
1.76 schwarze 3046:
1.110 schwarze 3047: name = cp = buf->buf + pos;
3048: if (*name == '\0')
1.149 schwarze 3049: return ROFF_IGN;
1.85 schwarze 3050: namesz = roff_getname(r, &cp, ln, pos);
3051: name[namesz] = '\0';
1.76 schwarze 3052:
3053: prev = &r->regtab;
3054: while (1) {
3055: reg = *prev;
1.110 schwarze 3056: if (reg == NULL || !strcmp(name, reg->key.p))
1.76 schwarze 3057: break;
3058: prev = ®->next;
3059: }
1.110 schwarze 3060: if (reg != NULL) {
1.76 schwarze 3061: *prev = reg->next;
3062: free(reg->key.p);
3063: free(reg);
3064: }
1.149 schwarze 3065: return ROFF_IGN;
1.29 schwarze 3066: }
3067:
1.138 schwarze 3068: /* --- handler functions for roff requests -------------------------------- */
3069:
1.212 schwarze 3070: static int
1.29 schwarze 3071: roff_rm(ROFF_ARGS)
3072: {
3073: const char *name;
3074: char *cp;
1.85 schwarze 3075: size_t namesz;
1.29 schwarze 3076:
1.110 schwarze 3077: cp = buf->buf + pos;
3078: while (*cp != '\0') {
1.85 schwarze 3079: name = cp;
1.110 schwarze 3080: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.85 schwarze 3081: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.183 schwarze 3082: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.110 schwarze 3083: if (name[namesz] == '\\')
1.85 schwarze 3084: break;
1.29 schwarze 3085: }
1.149 schwarze 3086: return ROFF_IGN;
1.51 schwarze 3087: }
3088:
1.212 schwarze 3089: static int
1.51 schwarze 3090: roff_it(ROFF_ARGS)
3091: {
3092: int iv;
3093:
3094: /* Parse the number of lines. */
1.133 schwarze 3095:
3096: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.222 schwarze 3097: mandoc_msg(MANDOCERR_IT_NONUM,
3098: ln, ppos, "%s", buf->buf + 1);
1.149 schwarze 3099: return ROFF_IGN;
1.51 schwarze 3100: }
3101:
1.134 schwarze 3102: while (isspace((unsigned char)buf->buf[pos]))
3103: pos++;
3104:
3105: /*
3106: * Arm the input line trap.
3107: * Special-casing "an-trap" is an ugly workaround to cope
3108: * with DocBook stupidly fiddling with man(7) internals.
3109: */
1.133 schwarze 3110:
1.51 schwarze 3111: roffit_lines = iv;
1.134 schwarze 3112: roffit_macro = mandoc_strdup(iv != 1 ||
3113: strcmp(buf->buf + pos, "an-trap") ?
3114: buf->buf + pos : "br");
1.149 schwarze 3115: return ROFF_IGN;
1.47 schwarze 3116: }
3117:
1.212 schwarze 3118: static int
1.47 schwarze 3119: roff_Dd(ROFF_ARGS)
3120: {
1.187 schwarze 3121: int mask;
3122: enum roff_tok t, te;
1.99 schwarze 3123:
1.187 schwarze 3124: switch (tok) {
3125: case ROFF_Dd:
3126: tok = MDOC_Dd;
3127: te = MDOC_MAX;
3128: if (r->format == 0)
3129: r->format = MPARSE_MDOC;
3130: mask = MPARSE_MDOC | MPARSE_QUICK;
3131: break;
3132: case ROFF_TH:
3133: tok = MAN_TH;
3134: te = MAN_MAX;
3135: if (r->format == 0)
3136: r->format = MPARSE_MAN;
3137: mask = MPARSE_QUICK;
3138: break;
3139: default:
3140: abort();
3141: }
3142: if ((r->options & mask) == 0)
3143: for (t = tok; t < te; t++)
3144: roff_setstr(r, roff_name[t], NULL, 0);
1.149 schwarze 3145: return ROFF_CONT;
1.14 schwarze 3146: }
3147:
1.212 schwarze 3148: static int
1.27 schwarze 3149: roff_TE(ROFF_ARGS)
3150: {
1.193 schwarze 3151: if (r->tbl == NULL) {
1.222 schwarze 3152: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "TE");
1.193 schwarze 3153: return ROFF_IGN;
3154: }
1.218 schwarze 3155: if (tbl_end(r->tbl, 0) == 0) {
1.193 schwarze 3156: r->tbl = NULL;
1.130 schwarze 3157: free(buf->buf);
3158: buf->buf = mandoc_strdup(".sp");
3159: buf->sz = 4;
1.201 schwarze 3160: *offs = 0;
1.149 schwarze 3161: return ROFF_REPARSE;
1.130 schwarze 3162: }
1.193 schwarze 3163: r->tbl = NULL;
1.149 schwarze 3164: return ROFF_IGN;
1.27 schwarze 3165: }
3166:
1.212 schwarze 3167: static int
1.27 schwarze 3168: roff_T_(ROFF_ARGS)
3169: {
3170:
3171: if (NULL == r->tbl)
1.222 schwarze 3172: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "T&");
1.27 schwarze 3173: else
1.168 schwarze 3174: tbl_restart(ln, ppos, r->tbl);
1.27 schwarze 3175:
1.149 schwarze 3176: return ROFF_IGN;
1.27 schwarze 3177: }
3178:
1.102 schwarze 3179: /*
3180: * Handle in-line equation delimiters.
3181: */
1.212 schwarze 3182: static int
1.110 schwarze 3183: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.41 schwarze 3184: {
1.105 schwarze 3185: char *cp1, *cp2;
3186: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.41 schwarze 3187:
1.102 schwarze 3188: /*
3189: * Outside equations, look for an opening delimiter.
3190: * If we are inside an equation, we already know it is
3191: * in-line, or this function wouldn't have been called;
3192: * so look for a closing delimiter.
3193: */
3194:
1.110 schwarze 3195: cp1 = buf->buf + pos;
1.102 schwarze 3196: cp2 = strchr(cp1, r->eqn == NULL ?
3197: r->last_eqn->odelim : r->last_eqn->cdelim);
3198: if (cp2 == NULL)
1.149 schwarze 3199: return ROFF_CONT;
1.102 schwarze 3200:
1.105 schwarze 3201: *cp2++ = '\0';
3202: bef_pr = bef_nl = aft_nl = aft_pr = "";
3203:
3204: /* Handle preceding text, protecting whitespace. */
3205:
1.110 schwarze 3206: if (*buf->buf != '\0') {
1.105 schwarze 3207: if (r->eqn == NULL)
3208: bef_pr = "\\&";
3209: bef_nl = "\n";
3210: }
3211:
3212: /*
3213: * Prepare replacing the delimiter with an equation macro
3214: * and drop leading white space from the equation.
3215: */
1.102 schwarze 3216:
1.105 schwarze 3217: if (r->eqn == NULL) {
3218: while (*cp2 == ' ')
3219: cp2++;
3220: mac = ".EQ";
3221: } else
3222: mac = ".EN";
3223:
3224: /* Handle following text, protecting whitespace. */
3225:
3226: if (*cp2 != '\0') {
3227: aft_nl = "\n";
3228: if (r->eqn != NULL)
3229: aft_pr = "\\&";
3230: }
3231:
3232: /* Do the actual replacement. */
3233:
1.110 schwarze 3234: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.105 schwarze 3235: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.110 schwarze 3236: free(buf->buf);
3237: buf->buf = cp1;
1.102 schwarze 3238:
3239: /* Toggle the in-line state of the eqn subsystem. */
3240:
3241: r->eqn_inline = r->eqn == NULL;
1.149 schwarze 3242: return ROFF_REPARSE;
1.41 schwarze 3243: }
3244:
1.212 schwarze 3245: static int
1.107 schwarze 3246: roff_EQ(ROFF_ARGS)
1.32 schwarze 3247: {
1.191 schwarze 3248: struct roff_node *n;
3249:
1.194 schwarze 3250: if (r->man->macroset == MACROSET_MAN)
3251: man_breakscope(r->man, ROFF_EQ);
1.191 schwarze 3252: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
3253: if (ln > r->man->last->line)
3254: n->flags |= NODE_LINE;
1.220 schwarze 3255: n->eqn = eqn_box_new();
1.191 schwarze 3256: roff_node_append(r->man, n);
3257: r->man->next = ROFF_NEXT_SIBLING;
1.32 schwarze 3258:
1.110 schwarze 3259: assert(r->eqn == NULL);
1.191 schwarze 3260: if (r->last_eqn == NULL)
1.223 schwarze 3261: r->last_eqn = eqn_alloc();
1.191 schwarze 3262: else
3263: eqn_reset(r->last_eqn);
3264: r->eqn = r->last_eqn;
3265: r->eqn->node = n;
1.41 schwarze 3266:
1.110 schwarze 3267: if (buf->buf[pos] != '\0')
1.222 schwarze 3268: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.110 schwarze 3269: ".EQ %s", buf->buf + pos);
1.41 schwarze 3270:
1.149 schwarze 3271: return ROFF_IGN;
1.32 schwarze 3272: }
3273:
1.212 schwarze 3274: static int
1.32 schwarze 3275: roff_EN(ROFF_ARGS)
3276: {
1.191 schwarze 3277: if (r->eqn != NULL) {
3278: eqn_parse(r->eqn);
3279: r->eqn = NULL;
3280: } else
1.222 schwarze 3281: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "EN");
1.191 schwarze 3282: if (buf->buf[pos] != '\0')
1.222 schwarze 3283: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.191 schwarze 3284: "EN %s", buf->buf + pos);
1.149 schwarze 3285: return ROFF_IGN;
1.32 schwarze 3286: }
3287:
1.212 schwarze 3288: static int
1.27 schwarze 3289: roff_TS(ROFF_ARGS)
3290: {
1.193 schwarze 3291: if (r->tbl != NULL) {
1.222 schwarze 3292: mandoc_msg(MANDOCERR_BLK_BROKEN, ln, ppos, "TS breaks TS");
1.218 schwarze 3293: tbl_end(r->tbl, 0);
1.27 schwarze 3294: }
1.223 schwarze 3295: r->tbl = tbl_alloc(ppos, ln, r->last_tbl);
1.218 schwarze 3296: if (r->last_tbl == NULL)
1.193 schwarze 3297: r->first_tbl = r->tbl;
3298: r->last_tbl = r->tbl;
1.169 schwarze 3299: return ROFF_IGN;
3300: }
3301:
1.212 schwarze 3302: static int
1.169 schwarze 3303: roff_onearg(ROFF_ARGS)
3304: {
3305: struct roff_node *n;
3306: char *cp;
1.177 schwarze 3307: int npos;
1.169 schwarze 3308:
1.174 schwarze 3309: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.192 schwarze 3310: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
3311: tok == ROFF_ti))
1.174 schwarze 3312: man_breakscope(r->man, tok);
3313:
1.181 schwarze 3314: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.177 schwarze 3315: r->man->last = roffce_node;
3316: r->man->next = ROFF_NEXT_SIBLING;
3317: }
3318:
1.169 schwarze 3319: roff_elem_alloc(r->man, ln, ppos, tok);
3320: n = r->man->last;
3321:
3322: cp = buf->buf + pos;
3323: if (*cp != '\0') {
3324: while (*cp != '\0' && *cp != ' ')
3325: cp++;
3326: while (*cp == ' ')
3327: *cp++ = '\0';
3328: if (*cp != '\0')
1.222 schwarze 3329: mandoc_msg(MANDOCERR_ARG_EXCESS,
3330: ln, (int)(cp - buf->buf),
1.169 schwarze 3331: "%s ... %s", roff_name[tok], cp);
3332: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.172 schwarze 3333: }
3334:
1.181 schwarze 3335: if (tok == ROFF_ce || tok == ROFF_rj) {
3336: if (r->man->last->type == ROFFT_ELEM) {
1.177 schwarze 3337: roff_word_alloc(r->man, ln, pos, "1");
3338: r->man->last->flags |= NODE_NOSRC;
3339: }
3340: npos = 0;
3341: if (roff_evalnum(r, ln, r->man->last->string, &npos,
3342: &roffce_lines, 0) == 0) {
1.222 schwarze 3343: mandoc_msg(MANDOCERR_CE_NONUM,
3344: ln, pos, "ce %s", buf->buf + pos);
1.177 schwarze 3345: roffce_lines = 1;
3346: }
3347: if (roffce_lines < 1) {
3348: r->man->last = r->man->last->parent;
3349: roffce_node = NULL;
3350: roffce_lines = 0;
3351: } else
3352: roffce_node = r->man->last->parent;
3353: } else {
3354: n->flags |= NODE_VALID | NODE_ENDED;
3355: r->man->last = n;
3356: }
3357: n->flags |= NODE_LINE;
1.172 schwarze 3358: r->man->next = ROFF_NEXT_SIBLING;
3359: return ROFF_IGN;
3360: }
3361:
1.212 schwarze 3362: static int
1.172 schwarze 3363: roff_manyarg(ROFF_ARGS)
3364: {
3365: struct roff_node *n;
3366: char *sp, *ep;
3367:
3368: roff_elem_alloc(r->man, ln, ppos, tok);
3369: n = r->man->last;
3370:
3371: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3372: while (*ep != '\0' && *ep != ' ')
3373: ep++;
3374: while (*ep == ' ')
3375: *ep++ = '\0';
3376: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.169 schwarze 3377: }
3378:
3379: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3380: r->man->last = n;
3381: r->man->next = ROFF_NEXT_SIBLING;
1.149 schwarze 3382: return ROFF_IGN;
1.123 schwarze 3383: }
3384:
1.212 schwarze 3385: static int
1.183 schwarze 3386: roff_als(ROFF_ARGS)
3387: {
3388: char *oldn, *newn, *end, *value;
3389: size_t oldsz, newsz, valsz;
3390:
3391: newn = oldn = buf->buf + pos;
3392: if (*newn == '\0')
3393: return ROFF_IGN;
3394:
3395: newsz = roff_getname(r, &oldn, ln, pos);
3396: if (newn[newsz] == '\\' || *oldn == '\0')
3397: return ROFF_IGN;
3398:
3399: end = oldn;
3400: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3401: if (oldsz == 0)
3402: return ROFF_IGN;
3403:
1.210 schwarze 3404: valsz = mandoc_asprintf(&value, ".%.*s \\$@\\\"\n",
1.187 schwarze 3405: (int)oldsz, oldn);
1.183 schwarze 3406: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3407: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3408: free(value);
3409: return ROFF_IGN;
3410: }
3411:
1.212 schwarze 3412: static int
1.168 schwarze 3413: roff_br(ROFF_ARGS)
1.123 schwarze 3414: {
1.174 schwarze 3415: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3416: man_breakscope(r->man, ROFF_br);
1.168 schwarze 3417: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
3418: if (buf->buf[pos] != '\0')
1.222 schwarze 3419: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.168 schwarze 3420: "%s %s", roff_name[tok], buf->buf + pos);
3421: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3422: r->man->next = ROFF_NEXT_SIBLING;
3423: return ROFF_IGN;
1.27 schwarze 3424: }
3425:
1.212 schwarze 3426: static int
1.48 schwarze 3427: roff_cc(ROFF_ARGS)
3428: {
3429: const char *p;
3430:
1.110 schwarze 3431: p = buf->buf + pos;
1.48 schwarze 3432:
1.110 schwarze 3433: if (*p == '\0' || (r->control = *p++) == '.')
1.175 schwarze 3434: r->control = '\0';
1.48 schwarze 3435:
1.110 schwarze 3436: if (*p != '\0')
1.222 schwarze 3437: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.132 schwarze 3438: ln, p - buf->buf, "cc ... %s", p);
1.48 schwarze 3439:
1.213 schwarze 3440: return ROFF_IGN;
3441: }
3442:
3443: static int
3444: roff_char(ROFF_ARGS)
3445: {
3446: const char *p, *kp, *vp;
3447: size_t ksz, vsz;
3448: int font;
3449:
3450: /* Parse the character to be replaced. */
3451:
3452: kp = buf->buf + pos;
3453: p = kp + 1;
3454: if (*kp == '\0' || (*kp == '\\' &&
3455: mandoc_escape(&p, NULL, NULL) != ESCAPE_SPECIAL) ||
3456: (*p != ' ' && *p != '\0')) {
1.222 schwarze 3457: mandoc_msg(MANDOCERR_CHAR_ARG, ln, pos, "char %s", kp);
1.213 schwarze 3458: return ROFF_IGN;
3459: }
3460: ksz = p - kp;
3461: while (*p == ' ')
3462: p++;
3463:
3464: /*
3465: * If the replacement string contains a font escape sequence,
3466: * we have to restore the font at the end.
3467: */
3468:
3469: vp = p;
3470: vsz = strlen(p);
3471: font = 0;
3472: while (*p != '\0') {
3473: if (*p++ != '\\')
3474: continue;
3475: switch (mandoc_escape(&p, NULL, NULL)) {
3476: case ESCAPE_FONT:
3477: case ESCAPE_FONTROMAN:
3478: case ESCAPE_FONTITALIC:
3479: case ESCAPE_FONTBOLD:
3480: case ESCAPE_FONTBI:
1.214 schwarze 3481: case ESCAPE_FONTCW:
1.213 schwarze 3482: case ESCAPE_FONTPREV:
3483: font++;
3484: break;
3485: default:
3486: break;
3487: }
3488: }
3489: if (font > 1)
1.222 schwarze 3490: mandoc_msg(MANDOCERR_CHAR_FONT,
3491: ln, (int)(vp - buf->buf), "%s", vp);
1.213 schwarze 3492:
3493: /*
3494: * Approximate the effect of .char using the .tr tables.
3495: * XXX In groff, .char and .tr interact differently.
3496: */
3497:
3498: if (ksz == 1) {
3499: if (r->xtab == NULL)
3500: r->xtab = mandoc_calloc(128, sizeof(*r->xtab));
3501: assert((unsigned int)*kp < 128);
3502: free(r->xtab[(int)*kp].p);
3503: r->xtab[(int)*kp].sz = mandoc_asprintf(&r->xtab[(int)*kp].p,
3504: "%s%s", vp, font ? "\fP" : "");
3505: } else {
3506: roff_setstrn(&r->xmbtab, kp, ksz, vp, vsz, 0);
3507: if (font)
3508: roff_setstrn(&r->xmbtab, kp, ksz, "\\fP", 3, 1);
3509: }
1.149 schwarze 3510: return ROFF_IGN;
1.48 schwarze 3511: }
3512:
1.212 schwarze 3513: static int
1.175 schwarze 3514: roff_ec(ROFF_ARGS)
3515: {
3516: const char *p;
3517:
3518: p = buf->buf + pos;
3519: if (*p == '\0')
3520: r->escape = '\\';
3521: else {
3522: r->escape = *p;
3523: if (*++p != '\0')
1.222 schwarze 3524: mandoc_msg(MANDOCERR_ARG_EXCESS, ln,
3525: (int)(p - buf->buf), "ec ... %s", p);
1.175 schwarze 3526: }
3527: return ROFF_IGN;
3528: }
3529:
1.212 schwarze 3530: static int
1.175 schwarze 3531: roff_eo(ROFF_ARGS)
3532: {
3533: r->escape = '\0';
3534: if (buf->buf[pos] != '\0')
1.222 schwarze 3535: mandoc_msg(MANDOCERR_ARG_SKIP,
1.175 schwarze 3536: ln, pos, "eo %s", buf->buf + pos);
3537: return ROFF_IGN;
1.202 schwarze 3538: }
3539:
1.212 schwarze 3540: static int
1.202 schwarze 3541: roff_nop(ROFF_ARGS)
3542: {
3543: while (buf->buf[pos] == ' ')
3544: pos++;
3545: *offs = pos;
3546: return ROFF_RERUN;
1.175 schwarze 3547: }
3548:
1.212 schwarze 3549: static int
1.42 schwarze 3550: roff_tr(ROFF_ARGS)
3551: {
3552: const char *p, *first, *second;
3553: size_t fsz, ssz;
3554: enum mandoc_esc esc;
3555:
1.110 schwarze 3556: p = buf->buf + pos;
1.42 schwarze 3557:
1.110 schwarze 3558: if (*p == '\0') {
1.222 schwarze 3559: mandoc_msg(MANDOCERR_REQ_EMPTY, ln, ppos, "tr");
1.149 schwarze 3560: return ROFF_IGN;
1.42 schwarze 3561: }
3562:
1.110 schwarze 3563: while (*p != '\0') {
1.42 schwarze 3564: fsz = ssz = 1;
3565:
3566: first = p++;
1.110 schwarze 3567: if (*first == '\\') {
1.42 schwarze 3568: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3569: if (esc == ESCAPE_ERROR) {
1.222 schwarze 3570: mandoc_msg(MANDOCERR_ESC_BAD, ln,
3571: (int)(p - buf->buf), "%s", first);
1.149 schwarze 3572: return ROFF_IGN;
1.42 schwarze 3573: }
3574: fsz = (size_t)(p - first);
3575: }
3576:
3577: second = p++;
1.110 schwarze 3578: if (*second == '\\') {
1.42 schwarze 3579: esc = mandoc_escape(&p, NULL, NULL);
1.110 schwarze 3580: if (esc == ESCAPE_ERROR) {
1.222 schwarze 3581: mandoc_msg(MANDOCERR_ESC_BAD, ln,
3582: (int)(p - buf->buf), "%s", second);
1.149 schwarze 3583: return ROFF_IGN;
1.42 schwarze 3584: }
3585: ssz = (size_t)(p - second);
1.110 schwarze 3586: } else if (*second == '\0') {
1.222 schwarze 3587: mandoc_msg(MANDOCERR_TR_ODD, ln,
3588: (int)(first - buf->buf), "tr %s", first);
1.42 schwarze 3589: second = " ";
3590: p--;
3591: }
3592:
3593: if (fsz > 1) {
1.80 schwarze 3594: roff_setstrn(&r->xmbtab, first, fsz,
3595: second, ssz, 0);
1.42 schwarze 3596: continue;
3597: }
3598:
1.110 schwarze 3599: if (r->xtab == NULL)
1.80 schwarze 3600: r->xtab = mandoc_calloc(128,
3601: sizeof(struct roffstr));
1.42 schwarze 3602:
3603: free(r->xtab[(int)*first].p);
3604: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3605: r->xtab[(int)*first].sz = ssz;
3606: }
3607:
1.149 schwarze 3608: return ROFF_IGN;
1.42 schwarze 3609: }
3610:
1.211 schwarze 3611: /*
3612: * Implementation of the .return request.
3613: * There is no need to call roff_userret() from here.
3614: * The read module will call that after rewinding the reader stack
3615: * to the place from where the current macro was called.
3616: */
1.212 schwarze 3617: static int
1.211 schwarze 3618: roff_return(ROFF_ARGS)
3619: {
3620: if (r->mstackpos >= 0)
1.212 schwarze 3621: return ROFF_IGN | ROFF_USERRET;
1.211 schwarze 3622:
1.222 schwarze 3623: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "return");
1.211 schwarze 3624: return ROFF_IGN;
3625: }
3626:
1.212 schwarze 3627: static int
1.178 schwarze 3628: roff_rn(ROFF_ARGS)
3629: {
3630: const char *value;
3631: char *oldn, *newn, *end;
3632: size_t oldsz, newsz;
1.187 schwarze 3633: int deftype;
1.178 schwarze 3634:
3635: oldn = newn = buf->buf + pos;
3636: if (*oldn == '\0')
3637: return ROFF_IGN;
3638:
3639: oldsz = roff_getname(r, &newn, ln, pos);
3640: if (oldn[oldsz] == '\\' || *newn == '\0')
3641: return ROFF_IGN;
3642:
3643: end = newn;
3644: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3645: if (newsz == 0)
3646: return ROFF_IGN;
3647:
1.187 schwarze 3648: deftype = ROFFDEF_ANY;
3649: value = roff_getstrn(r, oldn, oldsz, &deftype);
3650: switch (deftype) {
3651: case ROFFDEF_USER:
1.178 schwarze 3652: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3653: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3654: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.187 schwarze 3655: break;
3656: case ROFFDEF_PRE:
3657: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3658: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3659: break;
3660: case ROFFDEF_REN:
1.178 schwarze 3661: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3662: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.187 schwarze 3663: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3664: break;
3665: case ROFFDEF_STD:
1.178 schwarze 3666: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.187 schwarze 3667: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3668: break;
3669: default:
3670: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3671: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3672: break;
3673: }
1.178 schwarze 3674: return ROFF_IGN;
3675: }
3676:
1.212 schwarze 3677: static int
1.211 schwarze 3678: roff_shift(ROFF_ARGS)
3679: {
3680: struct mctx *ctx;
3681: int levels, i;
3682:
3683: levels = 1;
3684: if (buf->buf[pos] != '\0' &&
3685: roff_evalnum(r, ln, buf->buf, &pos, &levels, 0) == 0) {
1.222 schwarze 3686: mandoc_msg(MANDOCERR_CE_NONUM,
1.211 schwarze 3687: ln, pos, "shift %s", buf->buf + pos);
3688: levels = 1;
3689: }
3690: if (r->mstackpos < 0) {
1.222 schwarze 3691: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "shift");
1.211 schwarze 3692: return ROFF_IGN;
3693: }
3694: ctx = r->mstack + r->mstackpos;
3695: if (levels > ctx->argc) {
1.222 schwarze 3696: mandoc_msg(MANDOCERR_SHIFT,
1.211 schwarze 3697: ln, pos, "%d, but max is %d", levels, ctx->argc);
3698: levels = ctx->argc;
3699: }
3700: if (levels == 0)
3701: return ROFF_IGN;
3702: for (i = 0; i < levels; i++)
3703: free(ctx->argv[i]);
3704: ctx->argc -= levels;
3705: for (i = 0; i < ctx->argc; i++)
3706: ctx->argv[i] = ctx->argv[i + levels];
3707: return ROFF_IGN;
3708: }
3709:
1.212 schwarze 3710: static int
1.14 schwarze 3711: roff_so(ROFF_ARGS)
3712: {
1.121 schwarze 3713: char *name, *cp;
1.15 schwarze 3714:
1.110 schwarze 3715: name = buf->buf + pos;
1.222 schwarze 3716: mandoc_msg(MANDOCERR_SO, ln, ppos, "so %s", name);
1.14 schwarze 3717:
1.22 schwarze 3718: /*
3719: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3720: * opening anything that's not in our cwd or anything beneath
3721: * it. Thus, explicitly disallow traversing up the file-system
3722: * or using absolute paths.
3723: */
3724:
1.110 schwarze 3725: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.222 schwarze 3726: mandoc_msg(MANDOCERR_SO_PATH, ln, ppos, ".so %s", name);
1.121 schwarze 3727: buf->sz = mandoc_asprintf(&cp,
3728: ".sp\nSee the file %s.\n.sp", name) + 1;
3729: free(buf->buf);
3730: buf->buf = cp;
3731: *offs = 0;
1.149 schwarze 3732: return ROFF_REPARSE;
1.14 schwarze 3733: }
3734:
3735: *offs = pos;
1.149 schwarze 3736: return ROFF_SO;
1.7 schwarze 3737: }
3738:
1.138 schwarze 3739: /* --- user defined strings and macros ------------------------------------ */
3740:
1.212 schwarze 3741: static int
1.16 schwarze 3742: roff_userdef(ROFF_ARGS)
1.12 schwarze 3743: {
1.211 schwarze 3744: struct mctx *ctx;
3745: char *arg, *ap, *dst, *src;
3746: size_t sz;
3747:
3748: /* Initialize a new macro stack context. */
3749:
3750: if (++r->mstackpos == r->mstacksz) {
3751: r->mstack = mandoc_recallocarray(r->mstack,
3752: r->mstacksz, r->mstacksz + 8, sizeof(*r->mstack));
3753: r->mstacksz += 8;
3754: }
3755: ctx = r->mstack + r->mstackpos;
3756: ctx->argsz = 0;
3757: ctx->argc = 0;
3758: ctx->argv = NULL;
3759:
3760: /*
3761: * Collect pointers to macro argument strings,
3762: * NUL-terminating them and escaping quotes.
3763: */
3764:
3765: src = buf->buf + pos;
3766: while (*src != '\0') {
3767: if (ctx->argc == ctx->argsz) {
3768: ctx->argsz += 8;
3769: ctx->argv = mandoc_reallocarray(ctx->argv,
3770: ctx->argsz, sizeof(*ctx->argv));
3771: }
1.223 schwarze 3772: arg = mandoc_getarg(&src, ln, &pos);
1.211 schwarze 3773: sz = 1; /* For the terminating NUL. */
3774: for (ap = arg; *ap != '\0'; ap++)
3775: sz += *ap == '"' ? 4 : 1;
3776: ctx->argv[ctx->argc++] = dst = mandoc_malloc(sz);
3777: for (ap = arg; *ap != '\0'; ap++) {
3778: if (*ap == '"') {
3779: memcpy(dst, "\\(dq", 4);
3780: dst += 4;
3781: } else
3782: *dst++ = *ap;
1.16 schwarze 3783: }
1.211 schwarze 3784: *dst = '\0';
1.209 schwarze 3785: }
3786:
1.211 schwarze 3787: /* Replace the macro invocation by the macro definition. */
1.135 schwarze 3788:
1.110 schwarze 3789: free(buf->buf);
1.211 schwarze 3790: buf->buf = mandoc_strdup(r->current_string);
3791: buf->sz = strlen(buf->buf) + 1;
1.120 schwarze 3792: *offs = 0;
1.16 schwarze 3793:
1.149 schwarze 3794: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
1.212 schwarze 3795: ROFF_REPARSE | ROFF_USERCALL : ROFF_IGN | ROFF_APPEND;
1.12 schwarze 3796: }
1.28 schwarze 3797:
1.178 schwarze 3798: /*
3799: * Calling a high-level macro that was renamed with .rn.
3800: * r->current_string has already been set up by roff_parse().
3801: */
1.212 schwarze 3802: static int
1.178 schwarze 3803: roff_renamed(ROFF_ARGS)
3804: {
3805: char *nbuf;
3806:
1.187 schwarze 3807: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
3808: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.178 schwarze 3809: free(buf->buf);
3810: buf->buf = nbuf;
1.201 schwarze 3811: *offs = 0;
1.178 schwarze 3812: return ROFF_CONT;
3813: }
3814:
1.85 schwarze 3815: static size_t
1.28 schwarze 3816: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3817: {
3818: char *name, *cp;
1.85 schwarze 3819: size_t namesz;
1.28 schwarze 3820:
3821: name = *cpp;
3822: if ('\0' == *name)
1.149 schwarze 3823: return 0;
1.28 schwarze 3824:
1.85 schwarze 3825: /* Read until end of name and terminate it with NUL. */
3826: for (cp = name; 1; cp++) {
3827: if ('\0' == *cp || ' ' == *cp) {
3828: namesz = cp - name;
3829: break;
3830: }
1.28 schwarze 3831: if ('\\' != *cp)
3832: continue;
1.88 schwarze 3833: namesz = cp - name;
3834: if ('{' == cp[1] || '}' == cp[1])
3835: break;
1.28 schwarze 3836: cp++;
3837: if ('\\' == *cp)
3838: continue;
1.222 schwarze 3839: mandoc_msg(MANDOCERR_NAMESC, ln, pos,
1.97 schwarze 3840: "%.*s", (int)(cp - name + 1), name);
1.85 schwarze 3841: mandoc_escape((const char **)&cp, NULL, NULL);
3842: break;
1.28 schwarze 3843: }
3844:
3845: /* Read past spaces. */
3846: while (' ' == *cp)
3847: cp++;
3848:
3849: *cpp = cp;
1.149 schwarze 3850: return namesz;
1.28 schwarze 3851: }
3852:
1.16 schwarze 3853: /*
3854: * Store *string into the user-defined string called *name.
3855: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.66 schwarze 3856: * append == 0: replace mode
3857: * append == 1: single-line append mode
3858: * append == 2: multiline append mode, append '\n' after each call
1.16 schwarze 3859: */
1.8 schwarze 3860: static void
1.16 schwarze 3861: roff_setstr(struct roff *r, const char *name, const char *string,
1.66 schwarze 3862: int append)
1.7 schwarze 3863: {
1.187 schwarze 3864: size_t namesz;
1.42 schwarze 3865:
1.187 schwarze 3866: namesz = strlen(name);
3867: roff_setstrn(&r->strtab, name, namesz, string,
1.80 schwarze 3868: string ? strlen(string) : 0, append);
1.187 schwarze 3869: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.42 schwarze 3870: }
3871:
3872: static void
3873: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.66 schwarze 3874: const char *string, size_t stringsz, int append)
1.42 schwarze 3875: {
3876: struct roffkv *n;
3877: char *c;
3878: int i;
3879: size_t oldch, newch;
1.7 schwarze 3880:
1.16 schwarze 3881: /* Search for an existing string with the same name. */
1.42 schwarze 3882: n = *r;
3883:
1.84 schwarze 3884: while (n && (namesz != n->key.sz ||
3885: strncmp(n->key.p, name, namesz)))
1.7 schwarze 3886: n = n->next;
1.8 schwarze 3887:
3888: if (NULL == n) {
1.16 schwarze 3889: /* Create a new string table entry. */
1.42 schwarze 3890: n = mandoc_malloc(sizeof(struct roffkv));
3891: n->key.p = mandoc_strndup(name, namesz);
3892: n->key.sz = namesz;
3893: n->val.p = NULL;
3894: n->val.sz = 0;
3895: n->next = *r;
3896: *r = n;
1.66 schwarze 3897: } else if (0 == append) {
1.42 schwarze 3898: free(n->val.p);
3899: n->val.p = NULL;
3900: n->val.sz = 0;
1.16 schwarze 3901: }
3902:
3903: if (NULL == string)
3904: return;
3905:
3906: /*
3907: * One additional byte for the '\n' in multiline mode,
3908: * and one for the terminating '\0'.
3909: */
1.66 schwarze 3910: newch = stringsz + (1 < append ? 2u : 1u);
1.42 schwarze 3911:
3912: if (NULL == n->val.p) {
3913: n->val.p = mandoc_malloc(newch);
3914: *n->val.p = '\0';
1.16 schwarze 3915: oldch = 0;
3916: } else {
1.42 schwarze 3917: oldch = n->val.sz;
3918: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.16 schwarze 3919: }
3920:
3921: /* Skip existing content in the destination buffer. */
1.42 schwarze 3922: c = n->val.p + (int)oldch;
1.16 schwarze 3923:
3924: /* Append new content to the destination buffer. */
1.42 schwarze 3925: i = 0;
3926: while (i < (int)stringsz) {
1.16 schwarze 3927: /*
3928: * Rudimentary roff copy mode:
3929: * Handle escaped backslashes.
3930: */
1.42 schwarze 3931: if ('\\' == string[i] && '\\' == string[i + 1])
3932: i++;
3933: *c++ = string[i++];
1.16 schwarze 3934: }
1.8 schwarze 3935:
1.16 schwarze 3936: /* Append terminating bytes. */
1.66 schwarze 3937: if (1 < append)
1.16 schwarze 3938: *c++ = '\n';
1.42 schwarze 3939:
1.16 schwarze 3940: *c = '\0';
1.42 schwarze 3941: n->val.sz = (int)(c - n->val.p);
1.7 schwarze 3942: }
3943:
1.8 schwarze 3944: static const char *
1.197 schwarze 3945: roff_getstrn(struct roff *r, const char *name, size_t len,
1.187 schwarze 3946: int *deftype)
1.7 schwarze 3947: {
1.187 schwarze 3948: const struct roffkv *n;
1.197 schwarze 3949: int found, i;
1.187 schwarze 3950: enum roff_tok tok;
3951:
1.197 schwarze 3952: found = 0;
3953: for (n = r->strtab; n != NULL; n = n->next) {
3954: if (strncmp(name, n->key.p, len) != 0 ||
3955: n->key.p[len] != '\0' || n->val.p == NULL)
3956: continue;
3957: if (*deftype & ROFFDEF_USER) {
3958: *deftype = ROFFDEF_USER;
3959: return n->val.p;
3960: } else {
3961: found = 1;
3962: break;
3963: }
3964: }
3965: for (n = r->rentab; n != NULL; n = n->next) {
3966: if (strncmp(name, n->key.p, len) != 0 ||
3967: n->key.p[len] != '\0' || n->val.p == NULL)
3968: continue;
3969: if (*deftype & ROFFDEF_REN) {
3970: *deftype = ROFFDEF_REN;
3971: return n->val.p;
3972: } else {
3973: found = 1;
3974: break;
1.187 schwarze 3975: }
3976: }
1.197 schwarze 3977: for (i = 0; i < PREDEFS_MAX; i++) {
3978: if (strncmp(name, predefs[i].name, len) != 0 ||
3979: predefs[i].name[len] != '\0')
3980: continue;
3981: if (*deftype & ROFFDEF_PRE) {
3982: *deftype = ROFFDEF_PRE;
3983: return predefs[i].str;
3984: } else {
3985: found = 1;
3986: break;
1.187 schwarze 3987: }
3988: }
1.197 schwarze 3989: if (r->man->macroset != MACROSET_MAN) {
3990: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
3991: if (strncmp(name, roff_name[tok], len) != 0 ||
3992: roff_name[tok][len] != '\0')
3993: continue;
3994: if (*deftype & ROFFDEF_STD) {
3995: *deftype = ROFFDEF_STD;
3996: return NULL;
3997: } else {
3998: found = 1;
3999: break;
1.187 schwarze 4000: }
4001: }
4002: }
1.197 schwarze 4003: if (r->man->macroset != MACROSET_MDOC) {
4004: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
4005: if (strncmp(name, roff_name[tok], len) != 0 ||
4006: roff_name[tok][len] != '\0')
4007: continue;
4008: if (*deftype & ROFFDEF_STD) {
4009: *deftype = ROFFDEF_STD;
4010: return NULL;
4011: } else {
4012: found = 1;
4013: break;
1.187 schwarze 4014: }
4015: }
1.197 schwarze 4016: }
4017:
4018: if (found == 0 && *deftype != ROFFDEF_ANY) {
4019: if (*deftype & ROFFDEF_REN) {
4020: /*
4021: * This might still be a request,
4022: * so do not treat it as undefined yet.
4023: */
4024: *deftype = ROFFDEF_UNDEF;
4025: return NULL;
1.187 schwarze 4026: }
1.197 schwarze 4027:
4028: /* Using an undefined string defines it to be empty. */
4029:
4030: roff_setstrn(&r->strtab, name, len, "", 0, 0);
4031: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.187 schwarze 4032: }
1.197 schwarze 4033:
1.187 schwarze 4034: *deftype = 0;
1.149 schwarze 4035: return NULL;
1.7 schwarze 4036: }
4037:
1.8 schwarze 4038: static void
1.42 schwarze 4039: roff_freestr(struct roffkv *r)
1.7 schwarze 4040: {
1.42 schwarze 4041: struct roffkv *n, *nn;
1.7 schwarze 4042:
1.42 schwarze 4043: for (n = r; n; n = nn) {
4044: free(n->key.p);
4045: free(n->val.p);
1.7 schwarze 4046: nn = n->next;
4047: free(n);
4048: }
1.27 schwarze 4049: }
1.138 schwarze 4050:
4051: /* --- accessors and utility functions ------------------------------------ */
1.42 schwarze 4052:
4053: /*
4054: * Duplicate an input string, making the appropriate character
4055: * conversations (as stipulated by `tr') along the way.
4056: * Returns a heap-allocated string with all the replacements made.
4057: */
4058: char *
4059: roff_strdup(const struct roff *r, const char *p)
4060: {
4061: const struct roffkv *cp;
4062: char *res;
4063: const char *pp;
4064: size_t ssz, sz;
4065: enum mandoc_esc esc;
4066:
4067: if (NULL == r->xmbtab && NULL == r->xtab)
1.149 schwarze 4068: return mandoc_strdup(p);
1.42 schwarze 4069: else if ('\0' == *p)
1.149 schwarze 4070: return mandoc_strdup("");
1.42 schwarze 4071:
4072: /*
4073: * Step through each character looking for term matches
4074: * (remember that a `tr' can be invoked with an escape, which is
4075: * a glyph but the escape is multi-character).
4076: * We only do this if the character hash has been initialised
4077: * and the string is >0 length.
4078: */
4079:
4080: res = NULL;
4081: ssz = 0;
4082:
4083: while ('\0' != *p) {
1.161 schwarze 4084: assert((unsigned int)*p < 128);
4085: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.42 schwarze 4086: sz = r->xtab[(int)*p].sz;
4087: res = mandoc_realloc(res, ssz + sz + 1);
4088: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
4089: ssz += sz;
4090: p++;
4091: continue;
4092: } else if ('\\' != *p) {
4093: res = mandoc_realloc(res, ssz + 2);
4094: res[ssz++] = *p++;
4095: continue;
4096: }
4097:
4098: /* Search for term matches. */
4099: for (cp = r->xmbtab; cp; cp = cp->next)
4100: if (0 == strncmp(p, cp->key.p, cp->key.sz))
4101: break;
4102:
4103: if (NULL != cp) {
4104: /*
4105: * A match has been found.
4106: * Append the match to the array and move
4107: * forward by its keysize.
4108: */
1.80 schwarze 4109: res = mandoc_realloc(res,
4110: ssz + cp->val.sz + 1);
1.42 schwarze 4111: memcpy(res + ssz, cp->val.p, cp->val.sz);
4112: ssz += cp->val.sz;
4113: p += (int)cp->key.sz;
4114: continue;
4115: }
4116:
4117: /*
4118: * Handle escapes carefully: we need to copy
4119: * over just the escape itself, or else we might
4120: * do replacements within the escape itself.
4121: * Make sure to pass along the bogus string.
4122: */
4123: pp = p++;
4124: esc = mandoc_escape(&p, NULL, NULL);
4125: if (ESCAPE_ERROR == esc) {
4126: sz = strlen(pp);
4127: res = mandoc_realloc(res, ssz + sz + 1);
4128: memcpy(res + ssz, pp, sz);
4129: break;
4130: }
1.80 schwarze 4131: /*
4132: * We bail out on bad escapes.
1.42 schwarze 4133: * No need to warn: we already did so when
4134: * roff_res() was called.
4135: */
4136: sz = (int)(p - pp);
4137: res = mandoc_realloc(res, ssz + sz + 1);
4138: memcpy(res + ssz, pp, sz);
4139: ssz += sz;
4140: }
4141:
4142: res[(int)ssz] = '\0';
1.149 schwarze 4143: return res;
1.99 schwarze 4144: }
4145:
4146: int
4147: roff_getformat(const struct roff *r)
4148: {
4149:
1.149 schwarze 4150: return r->format;
1.48 schwarze 4151: }
4152:
4153: /*
1.80 schwarze 4154: * Find out whether a line is a macro line or not.
1.48 schwarze 4155: * If it is, adjust the current position and return one; if it isn't,
4156: * return zero and don't change the current position.
4157: * If the control character has been set with `.cc', then let that grain
4158: * precedence.
4159: * This is slighly contrary to groff, where using the non-breaking
4160: * control character when `cc' has been invoked will cause the
4161: * non-breaking macro contents to be printed verbatim.
4162: */
4163: int
4164: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
4165: {
4166: int pos;
4167:
4168: pos = *ppos;
4169:
1.175 schwarze 4170: if (r->control != '\0' && cp[pos] == r->control)
1.48 schwarze 4171: pos++;
1.175 schwarze 4172: else if (r->control != '\0')
1.149 schwarze 4173: return 0;
1.48 schwarze 4174: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
4175: pos += 2;
4176: else if ('.' == cp[pos] || '\'' == cp[pos])
4177: pos++;
4178: else
1.149 schwarze 4179: return 0;
1.48 schwarze 4180:
4181: while (' ' == cp[pos] || '\t' == cp[pos])
4182: pos++;
4183:
4184: *ppos = pos;
1.149 schwarze 4185: return 1;
1.1 schwarze 4186: }
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