Annotation of mandoc/roff.c, Revision 1.350
1.350 ! schwarze 1: /* $Id: roff.c,v 1.349 2018/12/13 11:55:47 schwarze Exp $ */
1.1 kristaps 2: /*
1.267 schwarze 3: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.325 schwarze 4: * Copyright (c) 2010-2015, 2017, 2018 Ingo Schwarze <schwarze@openbsd.org>
1.1 kristaps 5: *
6: * Permission to use, copy, modify, and distribute this software for any
1.66 kristaps 7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
1.1 kristaps 9: *
1.106 kristaps 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.66 kristaps 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.106 kristaps 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.66 kristaps 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.
1.1 kristaps 17: */
1.66 kristaps 18: #include "config.h"
1.225 schwarze 19:
20: #include <sys/types.h>
1.30 kristaps 21:
1.67 kristaps 22: #include <assert.h>
1.85 kristaps 23: #include <ctype.h>
1.245 schwarze 24: #include <limits.h>
1.295 schwarze 25: #include <stddef.h>
26: #include <stdint.h>
1.178 schwarze 27: #include <stdio.h>
1.1 kristaps 28: #include <stdlib.h>
1.67 kristaps 29: #include <string.h>
1.1 kristaps 30:
1.201 schwarze 31: #include "mandoc_aux.h"
1.295 schwarze 32: #include "mandoc_ohash.h"
1.345 schwarze 33: #include "mandoc.h"
1.265 schwarze 34: #include "roff.h"
1.349 schwarze 35: #include "mandoc_parse.h"
1.226 schwarze 36: #include "libmandoc.h"
1.266 schwarze 37: #include "roff_int.h"
1.346 schwarze 38: #include "tbl_parse.h"
1.347 schwarze 39: #include "eqn_parse.h"
1.82 kristaps 40:
1.170 schwarze 41: /* Maximum number of string expansions per line, to break infinite loops. */
42: #define EXPAND_LIMIT 1000
43:
1.315 schwarze 44: /* Types of definitions of macros and strings. */
45: #define ROFFDEF_USER (1 << 1) /* User-defined. */
46: #define ROFFDEF_PRE (1 << 2) /* Predefined. */
47: #define ROFFDEF_REN (1 << 3) /* Renamed standard macro. */
48: #define ROFFDEF_STD (1 << 4) /* mdoc(7) or man(7) macro. */
49: #define ROFFDEF_ANY (ROFFDEF_USER | ROFFDEF_PRE | \
50: ROFFDEF_REN | ROFFDEF_STD)
1.325 schwarze 51: #define ROFFDEF_UNDEF (1 << 5) /* Completely undefined. */
1.315 schwarze 52:
1.266 schwarze 53: /* --- data types --------------------------------------------------------- */
54:
1.147 kristaps 55: /*
1.167 kristaps 56: * An incredibly-simple string buffer.
57: */
1.94 kristaps 58: struct roffstr {
1.167 kristaps 59: char *p; /* nil-terminated buffer */
60: size_t sz; /* saved strlen(p) */
1.166 kristaps 61: };
62:
63: /*
1.167 kristaps 64: * A key-value roffstr pair as part of a singly-linked list.
1.166 kristaps 65: */
66: struct roffkv {
67: struct roffstr key;
68: struct roffstr val;
69: struct roffkv *next; /* next in list */
1.94 kristaps 70: };
71:
1.180 schwarze 72: /*
73: * A single number register as part of a singly-linked list.
74: */
75: struct roffreg {
76: struct roffstr key;
1.181 schwarze 77: int val;
1.327 schwarze 78: int step;
1.180 schwarze 79: struct roffreg *next;
80: };
81:
1.295 schwarze 82: /*
83: * Association of request and macro names with token IDs.
84: */
85: struct roffreq {
86: enum roff_tok tok;
87: char name[];
88: };
89:
1.339 schwarze 90: /*
91: * A macro processing context.
92: * More than one is needed when macro calls are nested.
93: */
94: struct mctx {
95: char **argv;
96: int argc;
97: int argsz;
98: };
99:
1.67 kristaps 100: struct roff {
1.128 kristaps 101: struct mparse *parse; /* parse point */
1.296 schwarze 102: struct roff_man *man; /* mdoc or man parser */
1.67 kristaps 103: struct roffnode *last; /* leaf of stack */
1.339 schwarze 104: struct mctx *mstack; /* stack of macro contexts */
1.223 schwarze 105: int *rstack; /* stack of inverted `ie' values */
1.295 schwarze 106: struct ohash *reqtab; /* request lookup table */
1.180 schwarze 107: struct roffreg *regtab; /* number registers */
1.166 kristaps 108: struct roffkv *strtab; /* user-defined strings & macros */
1.306 schwarze 109: struct roffkv *rentab; /* renamed strings & macros */
1.167 kristaps 110: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
111: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.106 kristaps 112: const char *current_string; /* value of last called user macro */
1.118 kristaps 113: struct tbl_node *first_tbl; /* first table parsed */
114: struct tbl_node *last_tbl; /* last table parsed */
115: struct tbl_node *tbl; /* current table being parsed */
1.319 schwarze 116: struct eqn_node *last_eqn; /* equation parser */
117: struct eqn_node *eqn; /* active equation parser */
1.230 schwarze 118: int eqn_inline; /* current equation is inline */
1.223 schwarze 119: int options; /* parse options */
1.339 schwarze 120: int mstacksz; /* current size of mstack */
121: int mstackpos; /* position in mstack */
1.223 schwarze 122: int rstacksz; /* current size limit of rstack */
123: int rstackpos; /* position in rstack */
1.227 schwarze 124: int format; /* current file in mdoc or man format */
1.223 schwarze 125: char control; /* control character */
1.303 schwarze 126: char escape; /* escape character */
1.79 kristaps 127: };
128:
1.67 kristaps 129: struct roffnode {
1.294 schwarze 130: enum roff_tok tok; /* type of node */
1.67 kristaps 131: struct roffnode *parent; /* up one in stack */
132: int line; /* parse line */
133: int col; /* parse col */
1.106 kristaps 134: char *name; /* node name, e.g. macro name */
1.79 kristaps 135: char *end; /* end-rules: custom token */
136: int endspan; /* end-rules: next-line or infty */
1.198 schwarze 137: int rule; /* current evaluation rule */
1.67 kristaps 138: };
139:
140: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.294 schwarze 141: enum roff_tok tok, /* tok of macro */ \
1.238 schwarze 142: struct buf *buf, /* input buffer */ \
1.67 kristaps 143: int ln, /* parse line */ \
1.75 kristaps 144: int ppos, /* original pos in buffer */ \
145: int pos, /* current pos in buffer */ \
1.74 kristaps 146: int *offs /* reset offset of buffer data */
1.67 kristaps 147:
1.340 schwarze 148: typedef int (*roffproc)(ROFF_ARGS);
1.67 kristaps 149:
150: struct roffmac {
1.79 kristaps 151: roffproc proc; /* process new macro */
152: roffproc text; /* process as child text of macro */
153: roffproc sub; /* process as child of macro */
154: int flags;
155: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.67 kristaps 156: };
157:
1.141 kristaps 158: struct predef {
159: const char *name; /* predefined input name */
160: const char *str; /* replacement symbol */
161: };
162:
163: #define PREDEF(__name, __str) \
164: { (__name), (__str) },
165:
1.266 schwarze 166: /* --- function prototypes ------------------------------------------------ */
167:
1.340 schwarze 168: static int roffnode_cleanscope(struct roff *);
169: static int roffnode_pop(struct roff *);
1.294 schwarze 170: static void roffnode_push(struct roff *, enum roff_tok,
1.155 kristaps 171: const char *, int, int);
1.346 schwarze 172: static void roff_addtbl(struct roff_man *, int, struct tbl_node *);
1.340 schwarze 173: static int roff_als(ROFF_ARGS);
174: static int roff_block(ROFF_ARGS);
175: static int roff_block_text(ROFF_ARGS);
176: static int roff_block_sub(ROFF_ARGS);
177: static int roff_br(ROFF_ARGS);
178: static int roff_cblock(ROFF_ARGS);
179: static int roff_cc(ROFF_ARGS);
180: static int roff_ccond(struct roff *, int, int);
1.341 schwarze 181: static int roff_char(ROFF_ARGS);
1.340 schwarze 182: static int roff_cond(ROFF_ARGS);
183: static int roff_cond_text(ROFF_ARGS);
184: static int roff_cond_sub(ROFF_ARGS);
185: static int roff_ds(ROFF_ARGS);
186: static int roff_ec(ROFF_ARGS);
187: static int roff_eo(ROFF_ARGS);
188: static int roff_eqndelim(struct roff *, struct buf *, int);
1.271 schwarze 189: static int roff_evalcond(struct roff *r, int, char *, int *);
1.234 kristaps 190: static int roff_evalnum(struct roff *, int,
191: const char *, int *, int *, int);
192: static int roff_evalpar(struct roff *, int,
1.261 schwarze 193: const char *, int *, int *, int);
1.198 schwarze 194: static int roff_evalstrcond(const char *, int *);
1.155 kristaps 195: static void roff_free1(struct roff *);
1.180 schwarze 196: static void roff_freereg(struct roffreg *);
1.167 kristaps 197: static void roff_freestr(struct roffkv *);
1.212 schwarze 198: static size_t roff_getname(struct roff *, char **, int, int);
1.261 schwarze 199: static int roff_getnum(const char *, int *, int *, int);
1.184 schwarze 200: static int roff_getop(const char *, int *, char *);
1.327 schwarze 201: static int roff_getregn(struct roff *,
202: const char *, size_t, char);
1.273 schwarze 203: static int roff_getregro(const struct roff *,
204: const char *name);
1.325 schwarze 205: static const char *roff_getstrn(struct roff *,
1.315 schwarze 206: const char *, size_t, int *);
1.271 schwarze 207: static int roff_hasregn(const struct roff *,
208: const char *, size_t);
1.340 schwarze 209: static int roff_insec(ROFF_ARGS);
210: static int roff_it(ROFF_ARGS);
211: static int roff_line_ignore(ROFF_ARGS);
1.265 schwarze 212: static void roff_man_alloc1(struct roff_man *);
213: static void roff_man_free1(struct roff_man *);
1.340 schwarze 214: static int roff_manyarg(ROFF_ARGS);
215: static int roff_nop(ROFF_ARGS);
216: static int roff_nr(ROFF_ARGS);
217: static int roff_onearg(ROFF_ARGS);
1.294 schwarze 218: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.214 schwarze 219: int, int);
1.340 schwarze 220: static int roff_parsetext(struct roff *, struct buf *,
1.305 schwarze 221: int, int *);
1.340 schwarze 222: static int roff_renamed(ROFF_ARGS);
223: static int roff_res(struct roff *, struct buf *, int, int);
224: static int roff_return(ROFF_ARGS);
225: static int roff_rm(ROFF_ARGS);
226: static int roff_rn(ROFF_ARGS);
227: static int roff_rr(ROFF_ARGS);
1.326 schwarze 228: static void roff_setregn(struct roff *, const char *,
1.327 schwarze 229: size_t, int, char, int);
1.94 kristaps 230: static void roff_setstr(struct roff *,
1.106 kristaps 231: const char *, const char *, int);
1.207 schwarze 232: static void roff_setstrn(struct roffkv **, const char *,
1.164 kristaps 233: size_t, const char *, size_t, int);
1.340 schwarze 234: static int roff_shift(ROFF_ARGS);
235: static int roff_so(ROFF_ARGS);
236: static int roff_tr(ROFF_ARGS);
237: static int roff_Dd(ROFF_ARGS);
238: static int roff_TE(ROFF_ARGS);
239: static int roff_TS(ROFF_ARGS);
240: static int roff_EQ(ROFF_ARGS);
241: static int roff_EN(ROFF_ARGS);
242: static int roff_T_(ROFF_ARGS);
243: static int roff_unsupp(ROFF_ARGS);
244: static int roff_userdef(ROFF_ARGS);
1.67 kristaps 245:
1.266 schwarze 246: /* --- constant data ------------------------------------------------------ */
247:
1.261 schwarze 248: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
249: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
250:
1.294 schwarze 251: const char *__roff_name[MAN_MAX + 1] = {
1.305 schwarze 252: "br", "ce", "ft", "ll",
1.312 schwarze 253: "mc", "po", "rj", "sp",
254: "ta", "ti", NULL,
1.294 schwarze 255: "ab", "ad", "af", "aln",
256: "als", "am", "am1", "ami",
257: "ami1", "as", "as1", "asciify",
258: "backtrace", "bd", "bleedat", "blm",
259: "box", "boxa", "bp", "BP",
260: "break", "breakchar", "brnl", "brp",
1.305 schwarze 261: "brpnl", "c2", "cc",
1.294 schwarze 262: "cf", "cflags", "ch", "char",
263: "chop", "class", "close", "CL",
264: "color", "composite", "continue", "cp",
265: "cropat", "cs", "cu", "da",
266: "dch", "Dd", "de", "de1",
267: "defcolor", "dei", "dei1", "device",
268: "devicem", "di", "do", "ds",
269: "ds1", "dwh", "dt", "ec",
270: "ecr", "ecs", "el", "em",
271: "EN", "eo", "EP", "EQ",
272: "errprint", "ev", "evc", "ex",
273: "fallback", "fam", "fc", "fchar",
274: "fcolor", "fdeferlig", "feature", "fkern",
275: "fl", "flig", "fp", "fps",
276: "fschar", "fspacewidth", "fspecial", "ftr",
277: "fzoom", "gcolor", "hc", "hcode",
278: "hidechar", "hla", "hlm", "hpf",
279: "hpfa", "hpfcode", "hw", "hy",
280: "hylang", "hylen", "hym", "hypp",
281: "hys", "ie", "if", "ig",
282: "index", "it", "itc", "IX",
283: "kern", "kernafter", "kernbefore", "kernpair",
284: "lc", "lc_ctype", "lds", "length",
285: "letadj", "lf", "lg", "lhang",
286: "linetabs", "lnr", "lnrf", "lpfx",
1.304 schwarze 287: "ls", "lsm", "lt",
1.294 schwarze 288: "mediasize", "minss", "mk", "mso",
289: "na", "ne", "nh", "nhychar",
290: "nm", "nn", "nop", "nr",
291: "nrf", "nroff", "ns", "nx",
292: "open", "opena", "os", "output",
293: "padj", "papersize", "pc", "pev",
294: "pi", "PI", "pl", "pm",
1.312 schwarze 295: "pn", "pnr", "ps",
1.294 schwarze 296: "psbb", "pshape", "pso", "ptr",
297: "pvs", "rchar", "rd", "recursionlimit",
1.309 schwarze 298: "return", "rfschar", "rhang",
1.294 schwarze 299: "rm", "rn", "rnn", "rr",
300: "rs", "rt", "schar", "sentchar",
301: "shc", "shift", "sizes", "so",
302: "spacewidth", "special", "spreadwarn", "ss",
303: "sty", "substring", "sv", "sy",
1.300 schwarze 304: "T&", "tc", "TE",
1.301 schwarze 305: "TH", "tkf", "tl",
1.294 schwarze 306: "tm", "tm1", "tmc", "tr",
307: "track", "transchar", "trf", "trimat",
308: "trin", "trnt", "troff", "TS",
309: "uf", "ul", "unformat", "unwatch",
310: "unwatchn", "vpt", "vs", "warn",
311: "warnscale", "watch", "watchlength", "watchn",
312: "wh", "while", "write", "writec",
313: "writem", "xflag", ".", NULL,
1.306 schwarze 314: NULL, "text",
1.294 schwarze 315: "Dd", "Dt", "Os", "Sh",
316: "Ss", "Pp", "D1", "Dl",
317: "Bd", "Ed", "Bl", "El",
318: "It", "Ad", "An", "Ap",
319: "Ar", "Cd", "Cm", "Dv",
320: "Er", "Ev", "Ex", "Fa",
321: "Fd", "Fl", "Fn", "Ft",
322: "Ic", "In", "Li", "Nd",
323: "Nm", "Op", "Ot", "Pa",
324: "Rv", "St", "Va", "Vt",
325: "Xr", "%A", "%B", "%D",
326: "%I", "%J", "%N", "%O",
327: "%P", "%R", "%T", "%V",
328: "Ac", "Ao", "Aq", "At",
329: "Bc", "Bf", "Bo", "Bq",
330: "Bsx", "Bx", "Db", "Dc",
331: "Do", "Dq", "Ec", "Ef",
332: "Em", "Eo", "Fx", "Ms",
333: "No", "Ns", "Nx", "Ox",
334: "Pc", "Pf", "Po", "Pq",
335: "Qc", "Ql", "Qo", "Qq",
336: "Re", "Rs", "Sc", "So",
337: "Sq", "Sm", "Sx", "Sy",
338: "Tn", "Ux", "Xc", "Xo",
339: "Fo", "Fc", "Oo", "Oc",
340: "Bk", "Ek", "Bt", "Hf",
341: "Fr", "Ud", "Lb", "Lp",
342: "Lk", "Mt", "Brq", "Bro",
343: "Brc", "%C", "Es", "En",
1.299 schwarze 344: "Dx", "%Q", "%U", "Ta",
345: NULL,
1.294 schwarze 346: "TH", "SH", "SS", "TP",
1.332 schwarze 347: "TQ",
1.294 schwarze 348: "LP", "PP", "P", "IP",
349: "HP", "SM", "SB", "BI",
350: "IB", "BR", "RB", "R",
351: "B", "I", "IR", "RI",
1.299 schwarze 352: "nf", "fi",
1.294 schwarze 353: "RE", "RS", "DT", "UC",
1.297 schwarze 354: "PD", "AT", "in",
1.333 schwarze 355: "SY", "YS", "OP",
356: "EX", "EE", "UR",
1.317 schwarze 357: "UE", "MT", "ME", NULL
1.294 schwarze 358: };
359: const char *const *roff_name = __roff_name;
360:
361: static struct roffmac roffs[TOKEN_NONE] = {
1.296 schwarze 362: { roff_br, NULL, NULL, 0 }, /* br */
1.305 schwarze 363: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.297 schwarze 364: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.298 schwarze 365: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.304 schwarze 366: { roff_onearg, NULL, NULL, 0 }, /* mc */
1.312 schwarze 367: { roff_onearg, NULL, NULL, 0 }, /* po */
1.309 schwarze 368: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.299 schwarze 369: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.300 schwarze 370: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.301 schwarze 371: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.296 schwarze 372: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.295 schwarze 373: { roff_unsupp, NULL, NULL, 0 }, /* ab */
374: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
375: { roff_line_ignore, NULL, NULL, 0 }, /* af */
376: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.311 schwarze 377: { roff_als, NULL, NULL, 0 }, /* als */
1.295 schwarze 378: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
379: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
380: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
381: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
382: { roff_ds, NULL, NULL, 0 }, /* as */
383: { roff_ds, NULL, NULL, 0 }, /* as1 */
384: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
385: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
386: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
387: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
388: { roff_unsupp, NULL, NULL, 0 }, /* blm */
389: { roff_unsupp, NULL, NULL, 0 }, /* box */
390: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
391: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
392: { roff_unsupp, NULL, NULL, 0 }, /* BP */
393: { roff_unsupp, NULL, NULL, 0 }, /* break */
394: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
395: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.296 schwarze 396: { roff_br, NULL, NULL, 0 }, /* brp */
1.295 schwarze 397: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
398: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
399: { roff_cc, NULL, NULL, 0 }, /* cc */
400: { roff_insec, NULL, NULL, 0 }, /* cf */
401: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
402: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
1.341 schwarze 403: { roff_char, NULL, NULL, 0 }, /* char */
1.295 schwarze 404: { roff_unsupp, NULL, NULL, 0 }, /* chop */
405: { roff_line_ignore, NULL, NULL, 0 }, /* class */
406: { roff_insec, NULL, NULL, 0 }, /* close */
407: { roff_unsupp, NULL, NULL, 0 }, /* CL */
408: { roff_line_ignore, NULL, NULL, 0 }, /* color */
409: { roff_unsupp, NULL, NULL, 0 }, /* composite */
410: { roff_unsupp, NULL, NULL, 0 }, /* continue */
411: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
412: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
413: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
414: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
415: { roff_unsupp, NULL, NULL, 0 }, /* da */
416: { roff_unsupp, NULL, NULL, 0 }, /* dch */
417: { roff_Dd, NULL, NULL, 0 }, /* Dd */
418: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
419: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
420: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
421: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
422: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
423: { roff_unsupp, NULL, NULL, 0 }, /* device */
424: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
425: { roff_unsupp, NULL, NULL, 0 }, /* di */
426: { roff_unsupp, NULL, NULL, 0 }, /* do */
427: { roff_ds, NULL, NULL, 0 }, /* ds */
428: { roff_ds, NULL, NULL, 0 }, /* ds1 */
429: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
430: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.303 schwarze 431: { roff_ec, NULL, NULL, 0 }, /* ec */
1.295 schwarze 432: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
433: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
434: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
435: { roff_unsupp, NULL, NULL, 0 }, /* em */
436: { roff_EN, NULL, NULL, 0 }, /* EN */
1.303 schwarze 437: { roff_eo, NULL, NULL, 0 }, /* eo */
1.295 schwarze 438: { roff_unsupp, NULL, NULL, 0 }, /* EP */
439: { roff_EQ, NULL, NULL, 0 }, /* EQ */
440: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
441: { roff_unsupp, NULL, NULL, 0 }, /* ev */
442: { roff_unsupp, NULL, NULL, 0 }, /* evc */
443: { roff_unsupp, NULL, NULL, 0 }, /* ex */
444: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
445: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
446: { roff_unsupp, NULL, NULL, 0 }, /* fc */
447: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
448: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
449: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
450: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
451: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
452: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
453: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
454: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
455: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
456: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
457: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
458: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
459: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
460: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
461: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
462: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
463: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
464: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
465: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
466: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
467: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
468: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
469: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
470: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
471: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
472: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
473: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
474: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
475: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
476: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
477: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
478: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
479: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
480: { roff_unsupp, NULL, NULL, 0 }, /* index */
481: { roff_it, NULL, NULL, 0 }, /* it */
482: { roff_unsupp, NULL, NULL, 0 }, /* itc */
483: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
484: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
485: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
486: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
487: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
488: { roff_unsupp, NULL, NULL, 0 }, /* lc */
489: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
490: { roff_unsupp, NULL, NULL, 0 }, /* lds */
491: { roff_unsupp, NULL, NULL, 0 }, /* length */
492: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
493: { roff_insec, NULL, NULL, 0 }, /* lf */
494: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
495: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
496: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
497: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
498: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
499: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
500: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
501: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
502: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
503: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
504: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
505: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
506: { roff_insec, NULL, NULL, 0 }, /* mso */
507: { roff_line_ignore, NULL, NULL, 0 }, /* na */
508: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
509: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
510: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
511: { roff_unsupp, NULL, NULL, 0 }, /* nm */
512: { roff_unsupp, NULL, NULL, 0 }, /* nn */
1.330 schwarze 513: { roff_nop, NULL, NULL, 0 }, /* nop */
1.295 schwarze 514: { roff_nr, NULL, NULL, 0 }, /* nr */
515: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
516: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
517: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
518: { roff_insec, NULL, NULL, 0 }, /* nx */
519: { roff_insec, NULL, NULL, 0 }, /* open */
520: { roff_insec, NULL, NULL, 0 }, /* opena */
521: { roff_line_ignore, NULL, NULL, 0 }, /* os */
522: { roff_unsupp, NULL, NULL, 0 }, /* output */
523: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
524: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
525: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
526: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
527: { roff_insec, NULL, NULL, 0 }, /* pi */
528: { roff_unsupp, NULL, NULL, 0 }, /* PI */
529: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
530: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
531: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
532: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
533: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
534: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
535: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
536: { roff_insec, NULL, NULL, 0 }, /* pso */
537: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
538: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
539: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
540: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
541: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
1.339 schwarze 542: { roff_return, NULL, NULL, 0 }, /* return */
1.295 schwarze 543: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
544: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
545: { roff_rm, NULL, NULL, 0 }, /* rm */
1.306 schwarze 546: { roff_rn, NULL, NULL, 0 }, /* rn */
1.295 schwarze 547: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
548: { roff_rr, NULL, NULL, 0 }, /* rr */
549: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
550: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
551: { roff_unsupp, NULL, NULL, 0 }, /* schar */
552: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
553: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
1.339 schwarze 554: { roff_shift, NULL, NULL, 0 }, /* shift */
1.295 schwarze 555: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
556: { roff_so, NULL, NULL, 0 }, /* so */
557: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
558: { roff_line_ignore, NULL, NULL, 0 }, /* special */
559: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
560: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
561: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
562: { roff_unsupp, NULL, NULL, 0 }, /* substring */
563: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
564: { roff_insec, NULL, NULL, 0 }, /* sy */
565: { roff_T_, NULL, NULL, 0 }, /* T& */
566: { roff_unsupp, NULL, NULL, 0 }, /* tc */
567: { roff_TE, NULL, NULL, 0 }, /* TE */
1.315 schwarze 568: { roff_Dd, NULL, NULL, 0 }, /* TH */
1.295 schwarze 569: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
570: { roff_unsupp, NULL, NULL, 0 }, /* tl */
571: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
572: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
573: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
574: { roff_tr, NULL, NULL, 0 }, /* tr */
575: { roff_line_ignore, NULL, NULL, 0 }, /* track */
576: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
577: { roff_insec, NULL, NULL, 0 }, /* trf */
578: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
579: { roff_unsupp, NULL, NULL, 0 }, /* trin */
580: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
581: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
582: { roff_TS, NULL, NULL, 0 }, /* TS */
583: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
584: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
585: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
586: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
587: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
588: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
589: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
590: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
591: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
592: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
593: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
594: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
595: { roff_unsupp, NULL, NULL, 0 }, /* wh */
1.340 schwarze 596: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /*while*/
1.295 schwarze 597: { roff_insec, NULL, NULL, 0 }, /* write */
598: { roff_insec, NULL, NULL, 0 }, /* writec */
599: { roff_insec, NULL, NULL, 0 }, /* writem */
600: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
601: { roff_cblock, NULL, NULL, 0 }, /* . */
1.306 schwarze 602: { roff_renamed, NULL, NULL, 0 },
1.295 schwarze 603: { roff_userdef, NULL, NULL, 0 }
1.67 kristaps 604: };
605:
1.141 kristaps 606: /* Array of injected predefined strings. */
607: #define PREDEFS_MAX 38
608: static const struct predef predefs[PREDEFS_MAX] = {
609: #include "predefs.in"
610: };
611:
1.305 schwarze 612: static int roffce_lines; /* number of input lines to center */
613: static struct roff_node *roffce_node; /* active request */
1.178 schwarze 614: static int roffit_lines; /* number of lines to delay */
615: static char *roffit_macro; /* nil-terminated macro line */
616:
1.207 schwarze 617:
1.266 schwarze 618: /* --- request table ------------------------------------------------------ */
619:
1.295 schwarze 620: struct ohash *
621: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.85 kristaps 622: {
1.295 schwarze 623: struct ohash *htab;
624: struct roffreq *req;
625: enum roff_tok tok;
626: size_t sz;
627: unsigned int slot;
1.85 kristaps 628:
1.295 schwarze 629: htab = mandoc_malloc(sizeof(*htab));
630: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.85 kristaps 631:
1.295 schwarze 632: for (tok = mintok; tok < maxtok; tok++) {
1.296 schwarze 633: if (roff_name[tok] == NULL)
634: continue;
1.295 schwarze 635: sz = strlen(roff_name[tok]);
636: req = mandoc_malloc(sizeof(*req) + sz + 1);
637: req->tok = tok;
638: memcpy(req->name, roff_name[tok], sz + 1);
639: slot = ohash_qlookup(htab, req->name);
640: ohash_insert(htab, slot, req);
1.85 kristaps 641: }
1.295 schwarze 642: return htab;
1.85 kristaps 643: }
644:
1.295 schwarze 645: void
646: roffhash_free(struct ohash *htab)
1.67 kristaps 647: {
1.295 schwarze 648: struct roffreq *req;
649: unsigned int slot;
1.67 kristaps 650:
1.295 schwarze 651: if (htab == NULL)
652: return;
653: for (req = ohash_first(htab, &slot); req != NULL;
654: req = ohash_next(htab, &slot))
655: free(req);
656: ohash_delete(htab);
657: free(htab);
658: }
659:
660: enum roff_tok
661: roffhash_find(struct ohash *htab, const char *name, size_t sz)
662: {
663: struct roffreq *req;
664: const char *end;
665:
666: if (sz) {
667: end = name + sz;
668: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
669: } else
670: req = ohash_find(htab, ohash_qlookup(htab, name));
671: return req == NULL ? TOKEN_NONE : req->tok;
1.67 kristaps 672: }
673:
1.266 schwarze 674: /* --- stack of request blocks -------------------------------------------- */
675:
1.67 kristaps 676: /*
677: * Pop the current node off of the stack of roff instructions currently
678: * pending.
679: */
1.340 schwarze 680: static int
1.67 kristaps 681: roffnode_pop(struct roff *r)
682: {
683: struct roffnode *p;
1.340 schwarze 684: int inloop;
1.67 kristaps 685:
1.207 schwarze 686: p = r->last;
1.340 schwarze 687: inloop = p->tok == ROFF_while;
688: r->last = p->parent;
1.106 kristaps 689: free(p->name);
690: free(p->end);
1.67 kristaps 691: free(p);
1.340 schwarze 692: return inloop;
1.67 kristaps 693: }
694:
695: /*
696: * Push a roff node onto the instruction stack. This must later be
697: * removed with roffnode_pop().
698: */
1.98 schwarze 699: static void
1.294 schwarze 700: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.106 kristaps 701: int line, int col)
1.67 kristaps 702: {
703: struct roffnode *p;
704:
1.98 schwarze 705: p = mandoc_calloc(1, sizeof(struct roffnode));
1.67 kristaps 706: p->tok = tok;
1.106 kristaps 707: if (name)
708: p->name = mandoc_strdup(name);
1.67 kristaps 709: p->parent = r->last;
710: p->line = line;
711: p->col = col;
1.198 schwarze 712: p->rule = p->parent ? p->parent->rule : 0;
1.67 kristaps 713:
714: r->last = p;
715: }
716:
1.266 schwarze 717: /* --- roff parser state data management ---------------------------------- */
718:
1.67 kristaps 719: static void
720: roff_free1(struct roff *r)
721: {
1.167 kristaps 722: int i;
1.67 kristaps 723:
1.346 schwarze 724: tbl_free(r->first_tbl);
1.113 kristaps 725: r->first_tbl = r->last_tbl = r->tbl = NULL;
726:
1.347 schwarze 727: eqn_free(r->last_eqn);
1.319 schwarze 728: r->last_eqn = r->eqn = NULL;
1.125 kristaps 729:
1.339 schwarze 730: while (r->mstackpos >= 0)
731: roff_userret(r);
732:
1.67 kristaps 733: while (r->last)
734: roffnode_pop(r);
1.109 kristaps 735:
1.223 schwarze 736: free (r->rstack);
737: r->rstack = NULL;
738: r->rstacksz = 0;
739: r->rstackpos = -1;
740:
741: roff_freereg(r->regtab);
742: r->regtab = NULL;
743:
1.167 kristaps 744: roff_freestr(r->strtab);
1.306 schwarze 745: roff_freestr(r->rentab);
1.167 kristaps 746: roff_freestr(r->xmbtab);
1.306 schwarze 747: r->strtab = r->rentab = r->xmbtab = NULL;
1.167 kristaps 748:
749: if (r->xtab)
750: for (i = 0; i < 128; i++)
751: free(r->xtab[i].p);
752: free(r->xtab);
753: r->xtab = NULL;
1.67 kristaps 754: }
755:
756: void
757: roff_reset(struct roff *r)
758: {
759: roff_free1(r);
1.227 schwarze 760: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.303 schwarze 761: r->control = '\0';
762: r->escape = '\\';
1.307 schwarze 763: roffce_lines = 0;
764: roffce_node = NULL;
765: roffit_lines = 0;
766: roffit_macro = NULL;
1.67 kristaps 767: }
768:
769: void
770: roff_free(struct roff *r)
771: {
1.339 schwarze 772: int i;
773:
1.67 kristaps 774: roff_free1(r);
1.339 schwarze 775: for (i = 0; i < r->mstacksz; i++)
776: free(r->mstack[i].argv);
777: free(r->mstack);
1.295 schwarze 778: roffhash_free(r->reqtab);
1.67 kristaps 779: free(r);
780: }
781:
782: struct roff *
1.279 schwarze 783: roff_alloc(struct mparse *parse, int options)
1.67 kristaps 784: {
785: struct roff *r;
786:
1.98 schwarze 787: r = mandoc_calloc(1, sizeof(struct roff));
1.128 kristaps 788: r->parse = parse;
1.328 schwarze 789: r->reqtab = roffhash_alloc(0, ROFF_RENAMED);
1.199 schwarze 790: r->options = options;
1.227 schwarze 791: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.339 schwarze 792: r->mstackpos = -1;
1.82 kristaps 793: r->rstackpos = -1;
1.303 schwarze 794: r->escape = '\\';
1.277 schwarze 795: return r;
1.265 schwarze 796: }
797:
1.266 schwarze 798: /* --- syntax tree state data management ---------------------------------- */
799:
1.265 schwarze 800: static void
801: roff_man_free1(struct roff_man *man)
802: {
803:
1.266 schwarze 804: if (man->first != NULL)
805: roff_node_delete(man, man->first);
1.265 schwarze 806: free(man->meta.msec);
807: free(man->meta.vol);
808: free(man->meta.os);
809: free(man->meta.arch);
810: free(man->meta.title);
811: free(man->meta.name);
812: free(man->meta.date);
813: }
814:
815: static void
816: roff_man_alloc1(struct roff_man *man)
817: {
818:
819: memset(&man->meta, 0, sizeof(man->meta));
820: man->first = mandoc_calloc(1, sizeof(*man->first));
821: man->first->type = ROFFT_ROOT;
822: man->last = man->first;
823: man->last_es = NULL;
824: man->flags = 0;
825: man->macroset = MACROSET_NONE;
826: man->lastsec = man->lastnamed = SEC_NONE;
827: man->next = ROFF_NEXT_CHILD;
828: }
829:
830: void
831: roff_man_reset(struct roff_man *man)
832: {
833:
834: roff_man_free1(man);
835: roff_man_alloc1(man);
836: }
837:
838: void
839: roff_man_free(struct roff_man *man)
840: {
841:
842: roff_man_free1(man);
843: free(man);
844: }
845:
846: struct roff_man *
847: roff_man_alloc(struct roff *roff, struct mparse *parse,
1.316 schwarze 848: const char *os_s, int quick)
1.265 schwarze 849: {
850: struct roff_man *man;
851:
852: man = mandoc_calloc(1, sizeof(*man));
853: man->parse = parse;
854: man->roff = roff;
1.316 schwarze 855: man->os_s = os_s;
1.265 schwarze 856: man->quick = quick;
857: roff_man_alloc1(man);
1.296 schwarze 858: roff->man = man;
1.277 schwarze 859: return man;
1.67 kristaps 860: }
861:
1.266 schwarze 862: /* --- syntax tree handling ----------------------------------------------- */
863:
864: struct roff_node *
865: roff_node_alloc(struct roff_man *man, int line, int pos,
866: enum roff_type type, int tok)
867: {
868: struct roff_node *n;
869:
870: n = mandoc_calloc(1, sizeof(*n));
871: n->line = line;
872: n->pos = pos;
873: n->tok = tok;
874: n->type = type;
875: n->sec = man->lastsec;
876:
877: if (man->flags & MDOC_SYNOPSIS)
1.285 schwarze 878: n->flags |= NODE_SYNPRETTY;
1.266 schwarze 879: else
1.285 schwarze 880: n->flags &= ~NODE_SYNPRETTY;
1.266 schwarze 881: if (man->flags & MDOC_NEWLINE)
1.285 schwarze 882: n->flags |= NODE_LINE;
1.266 schwarze 883: man->flags &= ~MDOC_NEWLINE;
884:
1.277 schwarze 885: return n;
1.266 schwarze 886: }
887:
888: void
889: roff_node_append(struct roff_man *man, struct roff_node *n)
890: {
891:
892: switch (man->next) {
893: case ROFF_NEXT_SIBLING:
1.281 schwarze 894: if (man->last->next != NULL) {
895: n->next = man->last->next;
896: man->last->next->prev = n;
897: } else
898: man->last->parent->last = n;
1.266 schwarze 899: man->last->next = n;
900: n->prev = man->last;
901: n->parent = man->last->parent;
902: break;
903: case ROFF_NEXT_CHILD:
1.287 schwarze 904: if (man->last->child != NULL) {
905: n->next = man->last->child;
906: man->last->child->prev = n;
907: } else
908: man->last->last = n;
1.266 schwarze 909: man->last->child = n;
910: n->parent = man->last;
911: break;
912: default:
913: abort();
914: }
1.282 schwarze 915: man->last = n;
1.266 schwarze 916:
917: switch (n->type) {
918: case ROFFT_HEAD:
919: n->parent->head = n;
920: break;
921: case ROFFT_BODY:
1.282 schwarze 922: if (n->end != ENDBODY_NOT)
923: return;
1.266 schwarze 924: n->parent->body = n;
925: break;
926: case ROFFT_TAIL:
927: n->parent->tail = n;
928: break;
929: default:
1.282 schwarze 930: return;
1.266 schwarze 931: }
1.282 schwarze 932:
933: /*
934: * Copy over the normalised-data pointer of our parent. Not
935: * everybody has one, but copying a null pointer is fine.
936: */
937:
938: n->norm = n->parent->norm;
939: assert(n->parent->type == ROFFT_BLOCK);
1.266 schwarze 940: }
941:
1.267 schwarze 942: void
943: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
944: {
945: struct roff_node *n;
946:
947: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
948: n->string = roff_strdup(man->roff, word);
949: roff_node_append(man, n);
1.286 schwarze 950: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 951: man->next = ROFF_NEXT_SIBLING;
952: }
953:
954: void
955: roff_word_append(struct roff_man *man, const char *word)
956: {
957: struct roff_node *n;
958: char *addstr, *newstr;
959:
960: n = man->last;
961: addstr = roff_strdup(man->roff, word);
962: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
963: free(addstr);
964: free(n->string);
965: n->string = newstr;
966: man->next = ROFF_NEXT_SIBLING;
1.268 schwarze 967: }
968:
969: void
970: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
971: {
972: struct roff_node *n;
973:
974: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
975: roff_node_append(man, n);
976: man->next = ROFF_NEXT_CHILD;
977: }
978:
979: struct roff_node *
980: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
981: {
982: struct roff_node *n;
983:
984: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
985: roff_node_append(man, n);
986: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 987: return n;
1.267 schwarze 988: }
989:
1.266 schwarze 990: struct roff_node *
991: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
992: {
993: struct roff_node *n;
994:
995: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
996: roff_node_append(man, n);
997: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 998: return n;
1.266 schwarze 999: }
1000:
1001: struct roff_node *
1002: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1003: {
1004: struct roff_node *n;
1005:
1006: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1007: roff_node_append(man, n);
1008: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1009: return n;
1.267 schwarze 1010: }
1011:
1.321 schwarze 1012: static void
1.346 schwarze 1013: roff_addtbl(struct roff_man *man, int line, struct tbl_node *tbl)
1.267 schwarze 1014: {
1015: struct roff_node *n;
1.346 schwarze 1016: struct tbl_span *span;
1.267 schwarze 1017:
1018: if (man->macroset == MACROSET_MAN)
1.302 schwarze 1019: man_breakscope(man, ROFF_TS);
1.321 schwarze 1020: while ((span = tbl_span(tbl)) != NULL) {
1.346 schwarze 1021: n = roff_node_alloc(man, line, 0, ROFFT_TBL, TOKEN_NONE);
1.321 schwarze 1022: n->span = span;
1023: roff_node_append(man, n);
1024: n->flags |= NODE_VALID | NODE_ENDED;
1025: man->next = ROFF_NEXT_SIBLING;
1026: }
1.266 schwarze 1027: }
1028:
1029: void
1030: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1031: {
1032:
1033: /* Adjust siblings. */
1034:
1035: if (n->prev)
1036: n->prev->next = n->next;
1037: if (n->next)
1038: n->next->prev = n->prev;
1039:
1040: /* Adjust parent. */
1041:
1042: if (n->parent != NULL) {
1043: if (n->parent->child == n)
1044: n->parent->child = n->next;
1045: if (n->parent->last == n)
1046: n->parent->last = n->prev;
1047: }
1048:
1049: /* Adjust parse point. */
1050:
1051: if (man == NULL)
1052: return;
1053: if (man->last == n) {
1054: if (n->prev == NULL) {
1055: man->last = n->parent;
1056: man->next = ROFF_NEXT_CHILD;
1057: } else {
1058: man->last = n->prev;
1059: man->next = ROFF_NEXT_SIBLING;
1060: }
1061: }
1062: if (man->first == n)
1063: man->first = NULL;
1.344 schwarze 1064: }
1065:
1066: void
1067: roff_node_relink(struct roff_man *man, struct roff_node *n)
1068: {
1069: roff_node_unlink(man, n);
1070: n->prev = n->next = NULL;
1071: roff_node_append(man, n);
1.266 schwarze 1072: }
1073:
1074: void
1075: roff_node_free(struct roff_node *n)
1076: {
1077:
1078: if (n->args != NULL)
1079: mdoc_argv_free(n->args);
1080: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1081: free(n->norm);
1.347 schwarze 1082: eqn_box_free(n->eqn);
1.266 schwarze 1083: free(n->string);
1084: free(n);
1085: }
1086:
1087: void
1088: roff_node_delete(struct roff_man *man, struct roff_node *n)
1089: {
1090:
1091: while (n->child != NULL)
1092: roff_node_delete(man, n->child);
1093: roff_node_unlink(man, n);
1094: roff_node_free(n);
1.269 schwarze 1095: }
1096:
1097: void
1098: deroff(char **dest, const struct roff_node *n)
1099: {
1100: char *cp;
1101: size_t sz;
1102:
1103: if (n->type != ROFFT_TEXT) {
1104: for (n = n->child; n != NULL; n = n->next)
1105: deroff(dest, n);
1106: return;
1107: }
1108:
1.288 schwarze 1109: /* Skip leading whitespace. */
1.269 schwarze 1110:
1.288 schwarze 1111: for (cp = n->string; *cp != '\0'; cp++) {
1.289 schwarze 1112: if (cp[0] == '\\' && cp[1] != '\0' &&
1113: strchr(" %&0^|~", cp[1]) != NULL)
1.269 schwarze 1114: cp++;
1.288 schwarze 1115: else if ( ! isspace((unsigned char)*cp))
1.269 schwarze 1116: break;
1117: }
1118:
1.289 schwarze 1119: /* Skip trailing backslash. */
1120:
1121: sz = strlen(cp);
1.290 schwarze 1122: if (sz > 0 && cp[sz - 1] == '\\')
1.289 schwarze 1123: sz--;
1124:
1.269 schwarze 1125: /* Skip trailing whitespace. */
1126:
1.289 schwarze 1127: for (; sz; sz--)
1.269 schwarze 1128: if ( ! isspace((unsigned char)cp[sz-1]))
1129: break;
1130:
1131: /* Skip empty strings. */
1132:
1133: if (sz == 0)
1134: return;
1135:
1136: if (*dest == NULL) {
1137: *dest = mandoc_strndup(cp, sz);
1138: return;
1139: }
1140:
1141: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1142: free(*dest);
1143: *dest = cp;
1.266 schwarze 1144: }
1145:
1146: /* --- main functions of the roff parser ---------------------------------- */
1147:
1.94 kristaps 1148: /*
1.206 schwarze 1149: * In the current line, expand escape sequences that tend to get
1150: * used in numerical expressions and conditional requests.
1151: * Also check the syntax of the remaining escape sequences.
1.154 kristaps 1152: */
1.340 schwarze 1153: static int
1.238 schwarze 1154: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.94 kristaps 1155: {
1.339 schwarze 1156: struct mctx *ctx; /* current macro call context */
1.208 schwarze 1157: char ubuf[24]; /* buffer to print the number */
1.328 schwarze 1158: struct roff_node *n; /* used for header comments */
1.205 schwarze 1159: const char *start; /* start of the string to process */
1.209 schwarze 1160: char *stesc; /* start of an escape sequence ('\\') */
1.328 schwarze 1161: char *ep; /* end of comment string */
1.108 schwarze 1162: const char *stnam; /* start of the name, after "[(*" */
1163: const char *cp; /* end of the name, e.g. before ']' */
1164: const char *res; /* the string to be substituted */
1.238 schwarze 1165: char *nbuf; /* new buffer to copy buf->buf to */
1.181 schwarze 1166: size_t maxl; /* expected length of the escape name */
1167: size_t naml; /* actual length of the escape name */
1.339 schwarze 1168: size_t asz; /* length of the replacement */
1169: size_t rsz; /* length of the rest of the string */
1.237 schwarze 1170: enum mandoc_esc esc; /* type of the escape sequence */
1171: int inaml; /* length returned from mandoc_escape() */
1.181 schwarze 1172: int expand_count; /* to avoid infinite loops */
1.206 schwarze 1173: int npos; /* position in numeric expression */
1.218 schwarze 1174: int arg_complete; /* argument not interrupted by eol */
1.339 schwarze 1175: int quote_args; /* true for \\$@, false for \\$* */
1.303 schwarze 1176: int done; /* no more input available */
1.315 schwarze 1177: int deftype; /* type of definition to paste */
1.323 schwarze 1178: int rcsid; /* kind of RCS id seen */
1.327 schwarze 1179: char sign; /* increment number register */
1.206 schwarze 1180: char term; /* character terminating the escape */
1.94 kristaps 1181:
1.303 schwarze 1182: /* Search forward for comments. */
1183:
1184: done = 0;
1185: start = buf->buf + pos;
1186: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1187: if (stesc[0] != r->escape || stesc[1] == '\0')
1188: continue;
1189: stesc++;
1190: if (*stesc != '"' && *stesc != '#')
1191: continue;
1.313 schwarze 1192:
1193: /* Comment found, look for RCS id. */
1194:
1.323 schwarze 1195: rcsid = 0;
1.313 schwarze 1196: if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
1.323 schwarze 1197: rcsid = 1 << MANDOC_OS_OPENBSD;
1.313 schwarze 1198: cp += 8;
1199: } else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
1.323 schwarze 1200: rcsid = 1 << MANDOC_OS_NETBSD;
1.313 schwarze 1201: cp += 7;
1202: }
1203: if (cp != NULL &&
1204: isalnum((unsigned char)*cp) == 0 &&
1.314 schwarze 1205: strchr(cp, '$') != NULL) {
1.323 schwarze 1206: if (r->man->meta.rcsids & rcsid)
1.350 ! schwarze 1207: mandoc_msg(MANDOCERR_RCS_REP, ln,
! 1208: (int)(stesc - buf->buf) + 1,
! 1209: "%s", stesc + 1);
1.323 schwarze 1210: r->man->meta.rcsids |= rcsid;
1.314 schwarze 1211: }
1.313 schwarze 1212:
1213: /* Handle trailing whitespace. */
1214:
1.328 schwarze 1215: ep = strchr(stesc--, '\0') - 1;
1216: if (*ep == '\n') {
1.303 schwarze 1217: done = 1;
1.328 schwarze 1218: ep--;
1.303 schwarze 1219: }
1.328 schwarze 1220: if (*ep == ' ' || *ep == '\t')
1.350 ! schwarze 1221: mandoc_msg(MANDOCERR_SPACE_EOL,
! 1222: ln, (int)(ep - buf->buf), NULL);
1.328 schwarze 1223:
1224: /*
1225: * Save comments preceding the title macro
1226: * in the syntax tree.
1227: */
1228:
1229: if (r->format == 0) {
1230: while (*ep == ' ' || *ep == '\t')
1231: ep--;
1232: ep[1] = '\0';
1233: n = roff_node_alloc(r->man,
1234: ln, stesc + 1 - buf->buf,
1235: ROFFT_COMMENT, TOKEN_NONE);
1236: n->string = mandoc_strdup(stesc + 2);
1237: roff_node_append(r->man, n);
1238: n->flags |= NODE_VALID | NODE_ENDED;
1239: r->man->next = ROFF_NEXT_SIBLING;
1240: }
1241:
1.334 schwarze 1242: /* Line continuation with comment. */
1243:
1244: if (stesc[1] == '#') {
1245: *stesc = '\0';
1.340 schwarze 1246: return ROFF_IGN | ROFF_APPEND;
1.334 schwarze 1247: }
1248:
1249: /* Discard normal comments. */
1.328 schwarze 1250:
1.335 schwarze 1251: while (stesc > start && stesc[-1] == ' ' &&
1252: (stesc == start + 1 || stesc[-2] != '\\'))
1.303 schwarze 1253: stesc--;
1254: *stesc = '\0';
1255: break;
1256: }
1257: if (stesc == start)
1258: return ROFF_CONT;
1259: stesc--;
1260:
1261: /* Notice the end of the input. */
1262:
1263: if (*stesc == '\n') {
1264: *stesc-- = '\0';
1265: done = 1;
1266: }
1267:
1.170 schwarze 1268: expand_count = 0;
1.303 schwarze 1269: while (stesc >= start) {
1.170 schwarze 1270:
1.205 schwarze 1271: /* Search backwards for the next backslash. */
1272:
1.303 schwarze 1273: if (*stesc != r->escape) {
1274: if (*stesc == '\\') {
1275: *stesc = '\0';
1276: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1277: buf->buf, stesc + 1) + 1;
1278: start = nbuf + pos;
1279: stesc = nbuf + (stesc - buf->buf);
1280: free(buf->buf);
1281: buf->buf = nbuf;
1282: }
1283: stesc--;
1.205 schwarze 1284: continue;
1.303 schwarze 1285: }
1.205 schwarze 1286:
1287: /* If it is escaped, skip it. */
1288:
1289: for (cp = stesc - 1; cp >= start; cp--)
1.303 schwarze 1290: if (*cp != r->escape)
1.205 schwarze 1291: break;
1292:
1.238 schwarze 1293: if ((stesc - cp) % 2 == 0) {
1.303 schwarze 1294: while (stesc > cp)
1295: *stesc-- = '\\';
1.205 schwarze 1296: continue;
1.303 schwarze 1297: } else if (stesc[1] != '\0') {
1298: *stesc = '\\';
1299: } else {
1300: *stesc-- = '\0';
1301: if (done)
1302: continue;
1303: else
1.340 schwarze 1304: return ROFF_IGN | ROFF_APPEND;
1.205 schwarze 1305: }
1.108 schwarze 1306:
1.206 schwarze 1307: /* Decide whether to expand or to check only. */
1.108 schwarze 1308:
1.206 schwarze 1309: term = '\0';
1.205 schwarze 1310: cp = stesc + 1;
1.181 schwarze 1311: switch (*cp) {
1.207 schwarze 1312: case '*':
1.339 schwarze 1313: case '$':
1.181 schwarze 1314: res = NULL;
1315: break;
1.207 schwarze 1316: case 'B':
1317: case 'w':
1.206 schwarze 1318: term = cp[1];
1319: /* FALLTHROUGH */
1.207 schwarze 1320: case 'n':
1.327 schwarze 1321: sign = cp[1];
1322: if (sign == '+' || sign == '-')
1323: cp++;
1.181 schwarze 1324: res = ubuf;
1325: break;
1326: default:
1.237 schwarze 1327: esc = mandoc_escape(&cp, &stnam, &inaml);
1328: if (esc == ESCAPE_ERROR ||
1329: (esc == ESCAPE_SPECIAL &&
1.279 schwarze 1330: mchars_spec2cp(stnam, inaml) < 0))
1.350 ! schwarze 1331: mandoc_msg(MANDOCERR_ESC_BAD,
! 1332: ln, (int)(stesc - buf->buf),
1.219 schwarze 1333: "%.*s", (int)(cp - stesc), stesc);
1.303 schwarze 1334: stesc--;
1.205 schwarze 1335: continue;
1.152 kristaps 1336: }
1337:
1.205 schwarze 1338: if (EXPAND_LIMIT < ++expand_count) {
1.350 ! schwarze 1339: mandoc_msg(MANDOCERR_ROFFLOOP,
1.238 schwarze 1340: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1341: return ROFF_IGN;
1.205 schwarze 1342: }
1.108 schwarze 1343:
1344: /*
1345: * The third character decides the length
1.181 schwarze 1346: * of the name of the string or register.
1.108 schwarze 1347: * Save a pointer to the name.
1348: */
1349:
1.238 schwarze 1350: if (term == '\0') {
1.206 schwarze 1351: switch (*++cp) {
1.207 schwarze 1352: case '\0':
1.206 schwarze 1353: maxl = 0;
1354: break;
1.207 schwarze 1355: case '(':
1.206 schwarze 1356: cp++;
1357: maxl = 2;
1358: break;
1.207 schwarze 1359: case '[':
1.206 schwarze 1360: cp++;
1361: term = ']';
1362: maxl = 0;
1363: break;
1364: default:
1365: maxl = 1;
1366: break;
1367: }
1368: } else {
1369: cp += 2;
1.94 kristaps 1370: maxl = 0;
1371: }
1.108 schwarze 1372: stnam = cp;
1.94 kristaps 1373:
1.108 schwarze 1374: /* Advance to the end of the name. */
1.94 kristaps 1375:
1.253 schwarze 1376: naml = 0;
1.218 schwarze 1377: arg_complete = 1;
1.253 schwarze 1378: while (maxl == 0 || naml < maxl) {
1.238 schwarze 1379: if (*cp == '\0') {
1.350 ! schwarze 1380: mandoc_msg(MANDOCERR_ESC_BAD, ln,
! 1381: (int)(stesc - buf->buf), "%s", stesc);
1.218 schwarze 1382: arg_complete = 0;
1.206 schwarze 1383: break;
1.153 kristaps 1384: }
1.238 schwarze 1385: if (maxl == 0 && *cp == term) {
1.206 schwarze 1386: cp++;
1.253 schwarze 1387: break;
1388: }
1389: if (*cp++ != '\\' || stesc[1] != 'w') {
1390: naml++;
1391: continue;
1392: }
1393: switch (mandoc_escape(&cp, NULL, NULL)) {
1394: case ESCAPE_SPECIAL:
1395: case ESCAPE_UNICODE:
1396: case ESCAPE_NUMBERED:
1397: case ESCAPE_OVERSTRIKE:
1398: naml++;
1399: break;
1400: default:
1.94 kristaps 1401: break;
1.206 schwarze 1402: }
1.94 kristaps 1403: }
1404:
1.108 schwarze 1405: /*
1406: * Retrieve the replacement string; if it is
1407: * undefined, resume searching for escapes.
1408: */
1409:
1.206 schwarze 1410: switch (stesc[1]) {
1.207 schwarze 1411: case '*':
1.315 schwarze 1412: if (arg_complete) {
1413: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1414: res = roff_getstrn(r, stnam, naml, &deftype);
1.331 schwarze 1415:
1416: /*
1417: * If not overriden, let \*(.T
1418: * through to the formatters.
1419: */
1420:
1421: if (res == NULL && naml == 2 &&
1422: stnam[0] == '.' && stnam[1] == 'T') {
1423: roff_setstrn(&r->strtab,
1424: ".T", 2, NULL, 0, 0);
1425: stesc--;
1426: continue;
1427: }
1.315 schwarze 1428: }
1.206 schwarze 1429: break;
1.339 schwarze 1430: case '$':
1431: if (r->mstackpos < 0) {
1.350 ! schwarze 1432: mandoc_msg(MANDOCERR_ARG_UNDEF, ln,
! 1433: (int)(stesc - buf->buf), "%.3s", stesc);
1.339 schwarze 1434: break;
1435: }
1436: ctx = r->mstack + r->mstackpos;
1437: npos = stesc[2] - '1';
1438: if (npos >= 0 && npos <= 8) {
1439: res = npos < ctx->argc ?
1440: ctx->argv[npos] : "";
1441: break;
1442: }
1443: if (stesc[2] == '*')
1444: quote_args = 0;
1445: else if (stesc[2] == '@')
1446: quote_args = 1;
1447: else {
1.350 ! schwarze 1448: mandoc_msg(MANDOCERR_ARG_NONUM, ln,
! 1449: (int)(stesc - buf->buf), "%.3s", stesc);
1.339 schwarze 1450: break;
1451: }
1452: asz = 0;
1453: for (npos = 0; npos < ctx->argc; npos++) {
1454: if (npos)
1455: asz++; /* blank */
1456: if (quote_args)
1457: asz += 2; /* quotes */
1458: asz += strlen(ctx->argv[npos]);
1459: }
1460: if (asz != 3) {
1461: rsz = buf->sz - (stesc - buf->buf) - 3;
1462: if (asz < 3)
1463: memmove(stesc + asz, stesc + 3, rsz);
1464: buf->sz += asz - 3;
1465: nbuf = mandoc_realloc(buf->buf, buf->sz);
1466: start = nbuf + pos;
1467: stesc = nbuf + (stesc - buf->buf);
1468: buf->buf = nbuf;
1469: if (asz > 3)
1470: memmove(stesc + asz, stesc + 3, rsz);
1471: }
1472: for (npos = 0; npos < ctx->argc; npos++) {
1473: if (npos)
1474: *stesc++ = ' ';
1475: if (quote_args)
1476: *stesc++ = '"';
1477: cp = ctx->argv[npos];
1478: while (*cp != '\0')
1479: *stesc++ = *cp++;
1480: if (quote_args)
1481: *stesc++ = '"';
1482: }
1483: continue;
1.207 schwarze 1484: case 'B':
1.206 schwarze 1485: npos = 0;
1.218 schwarze 1486: ubuf[0] = arg_complete &&
1.261 schwarze 1487: roff_evalnum(r, ln, stnam, &npos,
1488: NULL, ROFFNUM_SCALE) &&
1.218 schwarze 1489: stnam + npos + 1 == cp ? '1' : '0';
1.206 schwarze 1490: ubuf[1] = '\0';
1491: break;
1.207 schwarze 1492: case 'n':
1.218 schwarze 1493: if (arg_complete)
1494: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.327 schwarze 1495: roff_getregn(r, stnam, naml, sign));
1.218 schwarze 1496: else
1497: ubuf[0] = '\0';
1.206 schwarze 1498: break;
1.207 schwarze 1499: case 'w':
1.218 schwarze 1500: /* use even incomplete args */
1.208 schwarze 1501: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.206 schwarze 1502: 24 * (int)naml);
1503: break;
1504: }
1.94 kristaps 1505:
1.238 schwarze 1506: if (res == NULL) {
1.339 schwarze 1507: if (stesc[1] == '*')
1.350 ! schwarze 1508: mandoc_msg(MANDOCERR_STR_UNDEF,
! 1509: ln, (int)(stesc - buf->buf),
1.339 schwarze 1510: "%.*s", (int)naml, stnam);
1.142 kristaps 1511: res = "";
1.246 schwarze 1512: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1.350 ! schwarze 1513: mandoc_msg(MANDOCERR_ROFFLOOP,
1.246 schwarze 1514: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1515: return ROFF_IGN;
1.94 kristaps 1516: }
1517:
1.108 schwarze 1518: /* Replace the escape sequence by the string. */
1519:
1.209 schwarze 1520: *stesc = '\0';
1.238 schwarze 1521: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1522: buf->buf, res, cp) + 1;
1.94 kristaps 1523:
1.205 schwarze 1524: /* Prepare for the next replacement. */
1.94 kristaps 1525:
1.205 schwarze 1526: start = nbuf + pos;
1.238 schwarze 1527: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1528: free(buf->buf);
1529: buf->buf = nbuf;
1.154 kristaps 1530: }
1.277 schwarze 1531: return ROFF_CONT;
1.154 kristaps 1532: }
1533:
1534: /*
1.275 schwarze 1535: * Process text streams.
1.154 kristaps 1536: */
1.340 schwarze 1537: static int
1.305 schwarze 1538: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.154 kristaps 1539: {
1540: size_t sz;
1541: const char *start;
1.178 schwarze 1542: char *p;
1543: int isz;
1.154 kristaps 1544: enum mandoc_esc esc;
1545:
1.275 schwarze 1546: /* Spring the input line trap. */
1547:
1548: if (roffit_lines == 1) {
1549: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1550: free(buf->buf);
1551: buf->buf = p;
1552: buf->sz = isz + 1;
1553: *offs = 0;
1554: free(roffit_macro);
1555: roffit_lines = 0;
1.277 schwarze 1556: return ROFF_REPARSE;
1.275 schwarze 1557: } else if (roffit_lines > 1)
1558: --roffit_lines;
1559:
1.305 schwarze 1560: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1561: if (roffce_lines < 1) {
1562: r->man->last = roffce_node;
1563: r->man->next = ROFF_NEXT_SIBLING;
1564: roffce_lines = 0;
1565: roffce_node = NULL;
1566: } else
1567: roffce_lines--;
1568: }
1569:
1.275 schwarze 1570: /* Convert all breakable hyphens into ASCII_HYPH. */
1571:
1.238 schwarze 1572: start = p = buf->buf + pos;
1.154 kristaps 1573:
1.238 schwarze 1574: while (*p != '\0') {
1.154 kristaps 1575: sz = strcspn(p, "-\\");
1576: p += sz;
1577:
1.238 schwarze 1578: if (*p == '\0')
1.159 kristaps 1579: break;
1580:
1.238 schwarze 1581: if (*p == '\\') {
1.154 kristaps 1582: /* Skip over escapes. */
1583: p++;
1.189 schwarze 1584: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.238 schwarze 1585: if (esc == ESCAPE_ERROR)
1.154 kristaps 1586: break;
1.264 schwarze 1587: while (*p == '-')
1588: p++;
1.155 kristaps 1589: continue;
1.159 kristaps 1590: } else if (p == start) {
1.158 kristaps 1591: p++;
1.155 kristaps 1592: continue;
1.158 kristaps 1593: }
1.155 kristaps 1594:
1.171 schwarze 1595: if (isalpha((unsigned char)p[-1]) &&
1596: isalpha((unsigned char)p[1]))
1.155 kristaps 1597: *p = ASCII_HYPH;
1598: p++;
1.94 kristaps 1599: }
1.277 schwarze 1600: return ROFF_CONT;
1.94 kristaps 1601: }
1602:
1.340 schwarze 1603: int
1.238 schwarze 1604: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.67 kristaps 1605: {
1.294 schwarze 1606: enum roff_tok t;
1.340 schwarze 1607: int e;
1.238 schwarze 1608: int pos; /* parse point */
1.243 schwarze 1609: int spos; /* saved parse point for messages */
1.238 schwarze 1610: int ppos; /* original offset in buf->buf */
1611: int ctl; /* macro line (boolean) */
1612:
1613: ppos = pos = *offs;
1.79 kristaps 1614:
1.230 schwarze 1615: /* Handle in-line equation delimiters. */
1616:
1.236 schwarze 1617: if (r->tbl == NULL &&
1618: r->last_eqn != NULL && r->last_eqn->delim &&
1.230 schwarze 1619: (r->eqn == NULL || r->eqn_inline)) {
1.238 schwarze 1620: e = roff_eqndelim(r, buf, pos);
1.230 schwarze 1621: if (e == ROFF_REPARSE)
1.277 schwarze 1622: return e;
1.230 schwarze 1623: assert(e == ROFF_CONT);
1624: }
1625:
1626: /* Expand some escape sequences. */
1.94 kristaps 1627:
1.238 schwarze 1628: e = roff_res(r, buf, ln, pos);
1.340 schwarze 1629: if ((e & ROFF_MASK) == ROFF_IGN)
1.277 schwarze 1630: return e;
1.238 schwarze 1631: assert(e == ROFF_CONT);
1.94 kristaps 1632:
1.238 schwarze 1633: ctl = roff_getcontrol(r, buf->buf, &pos);
1.130 kristaps 1634:
1.94 kristaps 1635: /*
1.79 kristaps 1636: * First, if a scope is open and we're not a macro, pass the
1.252 schwarze 1637: * text through the macro's filter.
1638: * Equations process all content themselves.
1639: * Tables process almost all content themselves, but we want
1640: * to warn about macros before passing it there.
1.79 kristaps 1641: */
1.74 kristaps 1642:
1.252 schwarze 1643: if (r->last != NULL && ! ctl) {
1.78 kristaps 1644: t = r->last->tok;
1.238 schwarze 1645: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.340 schwarze 1646: if ((e & ROFF_MASK) == ROFF_IGN)
1.277 schwarze 1647: return e;
1.340 schwarze 1648: e &= ~ROFF_MASK;
1649: } else
1650: e = ROFF_IGN;
1.319 schwarze 1651: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1652: eqn_read(r->eqn, buf->buf + ppos);
1.340 schwarze 1653: return e;
1.319 schwarze 1654: }
1.321 schwarze 1655: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1656: tbl_read(r->tbl, ln, buf->buf, ppos);
1.346 schwarze 1657: roff_addtbl(r->man, ln, r->tbl);
1.340 schwarze 1658: return e;
1.321 schwarze 1659: }
1.252 schwarze 1660: if ( ! ctl)
1.340 schwarze 1661: return roff_parsetext(r, buf, pos, offs) | e;
1.228 schwarze 1662:
1663: /* Skip empty request lines. */
1664:
1.238 schwarze 1665: if (buf->buf[pos] == '"') {
1.350 ! schwarze 1666: mandoc_msg(MANDOCERR_COMMENT_BAD, ln, pos, NULL);
1.277 schwarze 1667: return ROFF_IGN;
1.238 schwarze 1668: } else if (buf->buf[pos] == '\0')
1.277 schwarze 1669: return ROFF_IGN;
1.67 kristaps 1670:
1.79 kristaps 1671: /*
1672: * If a scope is open, go to the child handler for that macro,
1673: * as it may want to preprocess before doing anything with it.
1.125 kristaps 1674: * Don't do so if an equation is open.
1.79 kristaps 1675: */
1.78 kristaps 1676:
1.79 kristaps 1677: if (r->last) {
1678: t = r->last->tok;
1.277 schwarze 1679: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1680: }
1.78 kristaps 1681:
1.243 schwarze 1682: /* No scope is open. This is a new request or macro. */
1683:
1684: spos = pos;
1685: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1686:
1687: /* Tables ignore most macros. */
1688:
1.308 schwarze 1689: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.309 schwarze 1690: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.350 ! schwarze 1691: mandoc_msg(MANDOCERR_TBLMACRO,
! 1692: ln, pos, "%s", buf->buf + spos);
1.308 schwarze 1693: if (t != TOKEN_NONE)
1.277 schwarze 1694: return ROFF_IGN;
1.257 schwarze 1695: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1696: pos++;
1.291 schwarze 1697: while (buf->buf[pos] == ' ')
1.257 schwarze 1698: pos++;
1.321 schwarze 1699: tbl_read(r->tbl, ln, buf->buf, pos);
1.346 schwarze 1700: roff_addtbl(r->man, ln, r->tbl);
1.321 schwarze 1701: return ROFF_IGN;
1.243 schwarze 1702: }
1703:
1.305 schwarze 1704: /* For now, let high level macros abort .ce mode. */
1705:
1706: if (ctl && roffce_node != NULL &&
1.324 schwarze 1707: (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
1708: t == ROFF_TH || t == ROFF_TS)) {
1.305 schwarze 1709: r->man->last = roffce_node;
1710: r->man->next = ROFF_NEXT_SIBLING;
1711: roffce_lines = 0;
1712: roffce_node = NULL;
1713: }
1714:
1.79 kristaps 1715: /*
1.243 schwarze 1716: * This is neither a roff request nor a user-defined macro.
1717: * Let the standard macro set parsers handle it.
1.79 kristaps 1718: */
1.67 kristaps 1719:
1.294 schwarze 1720: if (t == TOKEN_NONE)
1.277 schwarze 1721: return ROFF_CONT;
1.243 schwarze 1722:
1723: /* Execute a roff request or a user defined macro. */
1.67 kristaps 1724:
1.296 schwarze 1725: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.74 kristaps 1726: }
1727:
1.339 schwarze 1728: /*
1729: * Internal interface function to tell the roff parser that execution
1730: * of the current macro ended. This is required because macro
1731: * definitions usually do not end with a .return request.
1732: */
1733: void
1734: roff_userret(struct roff *r)
1735: {
1736: struct mctx *ctx;
1737: int i;
1738:
1739: assert(r->mstackpos >= 0);
1740: ctx = r->mstack + r->mstackpos;
1741: for (i = 0; i < ctx->argc; i++)
1742: free(ctx->argv[i]);
1743: ctx->argc = 0;
1744: r->mstackpos--;
1745: }
1746:
1.117 kristaps 1747: void
1.74 kristaps 1748: roff_endparse(struct roff *r)
1749: {
1.321 schwarze 1750: if (r->last != NULL)
1.350 ! schwarze 1751: mandoc_msg(MANDOCERR_BLK_NOEND, r->last->line,
! 1752: r->last->col, "%s", roff_name[r->last->tok]);
1.117 kristaps 1753:
1.321 schwarze 1754: if (r->eqn != NULL) {
1.350 ! schwarze 1755: mandoc_msg(MANDOCERR_BLK_NOEND,
1.319 schwarze 1756: r->eqn->node->line, r->eqn->node->pos, "EQ");
1757: eqn_parse(r->eqn);
1758: r->eqn = NULL;
1.125 kristaps 1759: }
1760:
1.321 schwarze 1761: if (r->tbl != NULL) {
1.346 schwarze 1762: tbl_end(r->tbl, 1);
1.321 schwarze 1763: r->tbl = NULL;
1.117 kristaps 1764: }
1.67 kristaps 1765: }
1766:
1767: /*
1768: * Parse a roff node's type from the input buffer. This must be in the
1769: * form of ".foo xxx" in the usual way.
1770: */
1.294 schwarze 1771: static enum roff_tok
1.214 schwarze 1772: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.67 kristaps 1773: {
1.214 schwarze 1774: char *cp;
1.106 kristaps 1775: const char *mac;
1776: size_t maclen;
1.315 schwarze 1777: int deftype;
1.294 schwarze 1778: enum roff_tok t;
1.67 kristaps 1779:
1.214 schwarze 1780: cp = buf + *pos;
1781:
1782: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.294 schwarze 1783: return TOKEN_NONE;
1.67 kristaps 1784:
1.214 schwarze 1785: mac = cp;
1786: maclen = roff_getname(r, &cp, ln, ppos);
1.67 kristaps 1787:
1.315 schwarze 1788: deftype = ROFFDEF_USER | ROFFDEF_REN;
1789: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
1790: switch (deftype) {
1791: case ROFFDEF_USER:
1792: t = ROFF_USERDEF;
1793: break;
1794: case ROFFDEF_REN:
1795: t = ROFF_RENAMED;
1796: break;
1797: default:
1798: t = roffhash_find(r->reqtab, mac, maclen);
1799: break;
1800: }
1.294 schwarze 1801: if (t != TOKEN_NONE)
1.214 schwarze 1802: *pos = cp - buf;
1.325 schwarze 1803: else if (deftype == ROFFDEF_UNDEF) {
1804: /* Using an undefined macro defines it to be empty. */
1805: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
1806: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
1807: }
1.277 schwarze 1808: return t;
1.67 kristaps 1809: }
1810:
1.266 schwarze 1811: /* --- handling of request blocks ----------------------------------------- */
1812:
1.340 schwarze 1813: static int
1.76 kristaps 1814: roff_cblock(ROFF_ARGS)
1.67 kristaps 1815: {
1816:
1.79 kristaps 1817: /*
1818: * A block-close `..' should only be invoked as a child of an
1819: * ignore macro, otherwise raise a warning and just ignore it.
1820: */
1821:
1.238 schwarze 1822: if (r->last == NULL) {
1.350 ! schwarze 1823: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.277 schwarze 1824: return ROFF_IGN;
1.76 kristaps 1825: }
1.67 kristaps 1826:
1.81 kristaps 1827: switch (r->last->tok) {
1.207 schwarze 1828: case ROFF_am:
1.220 schwarze 1829: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.207 schwarze 1830: case ROFF_ami:
1831: case ROFF_de:
1.108 schwarze 1832: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.207 schwarze 1833: case ROFF_dei:
1834: case ROFF_ig:
1.81 kristaps 1835: break;
1836: default:
1.350 ! schwarze 1837: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.277 schwarze 1838: return ROFF_IGN;
1.76 kristaps 1839: }
1.67 kristaps 1840:
1.238 schwarze 1841: if (buf->buf[pos] != '\0')
1.350 ! schwarze 1842: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.238 schwarze 1843: ".. %s", buf->buf + pos);
1.71 kristaps 1844:
1845: roffnode_pop(r);
1.76 kristaps 1846: roffnode_cleanscope(r);
1.277 schwarze 1847: return ROFF_IGN;
1.71 kristaps 1848:
1.67 kristaps 1849: }
1850:
1.340 schwarze 1851: static int
1.76 kristaps 1852: roffnode_cleanscope(struct roff *r)
1.67 kristaps 1853: {
1.340 schwarze 1854: int inloop;
1.67 kristaps 1855:
1.340 schwarze 1856: inloop = 0;
1857: while (r->last != NULL) {
1.173 schwarze 1858: if (--r->last->endspan != 0)
1.76 kristaps 1859: break;
1.340 schwarze 1860: inloop += roffnode_pop(r);
1.76 kristaps 1861: }
1.340 schwarze 1862: return inloop;
1.67 kristaps 1863: }
1864:
1.340 schwarze 1865: static int
1.195 schwarze 1866: roff_ccond(struct roff *r, int ln, int ppos)
1.74 kristaps 1867: {
1.76 kristaps 1868: if (NULL == r->last) {
1.350 ! schwarze 1869: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 1870: return 0;
1.76 kristaps 1871: }
1872:
1.82 kristaps 1873: switch (r->last->tok) {
1.207 schwarze 1874: case ROFF_el:
1875: case ROFF_ie:
1876: case ROFF_if:
1.340 schwarze 1877: case ROFF_while:
1.82 kristaps 1878: break;
1879: default:
1.350 ! schwarze 1880: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 1881: return 0;
1.75 kristaps 1882: }
1883:
1.76 kristaps 1884: if (r->last->endspan > -1) {
1.350 ! schwarze 1885: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 1886: return 0;
1.76 kristaps 1887: }
1888:
1.340 schwarze 1889: return roffnode_pop(r) + roffnode_cleanscope(r);
1.76 kristaps 1890: }
1891:
1.340 schwarze 1892: static int
1.80 kristaps 1893: roff_block(ROFF_ARGS)
1.76 kristaps 1894: {
1.315 schwarze 1895: const char *name, *value;
1896: char *call, *cp, *iname, *rname;
1897: size_t csz, namesz, rsz;
1898: int deftype;
1.106 kristaps 1899:
1.220 schwarze 1900: /* Ignore groff compatibility mode for now. */
1.76 kristaps 1901:
1.238 schwarze 1902: if (tok == ROFF_de1)
1.220 schwarze 1903: tok = ROFF_de;
1.251 schwarze 1904: else if (tok == ROFF_dei1)
1905: tok = ROFF_dei;
1.238 schwarze 1906: else if (tok == ROFF_am1)
1.220 schwarze 1907: tok = ROFF_am;
1.251 schwarze 1908: else if (tok == ROFF_ami1)
1909: tok = ROFF_ami;
1.220 schwarze 1910:
1911: /* Parse the macro name argument. */
1912:
1.238 schwarze 1913: cp = buf->buf + pos;
1914: if (tok == ROFF_ig) {
1.220 schwarze 1915: iname = NULL;
1916: namesz = 0;
1917: } else {
1918: iname = cp;
1919: namesz = roff_getname(r, &cp, ln, ppos);
1920: iname[namesz] = '\0';
1921: }
1.107 kristaps 1922:
1.220 schwarze 1923: /* Resolve the macro name argument if it is indirect. */
1.107 kristaps 1924:
1.238 schwarze 1925: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 1926: deftype = ROFFDEF_USER;
1927: name = roff_getstrn(r, iname, namesz, &deftype);
1928: if (name == NULL) {
1.350 ! schwarze 1929: mandoc_msg(MANDOCERR_STR_UNDEF,
! 1930: ln, (int)(iname - buf->buf),
1.220 schwarze 1931: "%.*s", (int)namesz, iname);
1932: namesz = 0;
1933: } else
1934: namesz = strlen(name);
1935: } else
1936: name = iname;
1.107 kristaps 1937:
1.238 schwarze 1938: if (namesz == 0 && tok != ROFF_ig) {
1.350 ! schwarze 1939: mandoc_msg(MANDOCERR_REQ_EMPTY,
! 1940: ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 1941: return ROFF_IGN;
1.220 schwarze 1942: }
1.80 kristaps 1943:
1.106 kristaps 1944: roffnode_push(r, tok, name, ln, ppos);
1945:
1946: /*
1947: * At the beginning of a `de' macro, clear the existing string
1948: * with the same name, if there is one. New content will be
1.193 schwarze 1949: * appended from roff_block_text() in multiline mode.
1.106 kristaps 1950: */
1.107 kristaps 1951:
1.311 schwarze 1952: if (tok == ROFF_de || tok == ROFF_dei) {
1.213 schwarze 1953: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.311 schwarze 1954: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.315 schwarze 1955: } else if (tok == ROFF_am || tok == ROFF_ami) {
1956: deftype = ROFFDEF_ANY;
1957: value = roff_getstrn(r, iname, namesz, &deftype);
1958: switch (deftype) { /* Before appending, ... */
1959: case ROFFDEF_PRE: /* copy predefined to user-defined. */
1960: roff_setstrn(&r->strtab, name, namesz,
1961: value, strlen(value), 0);
1962: break;
1963: case ROFFDEF_REN: /* call original standard macro. */
1964: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1965: (int)strlen(value), value);
1966: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1967: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1968: free(call);
1969: break;
1970: case ROFFDEF_STD: /* rename and call standard macro. */
1971: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
1972: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
1973: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1974: (int)rsz, rname);
1975: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1976: free(call);
1977: free(rname);
1978: break;
1979: default:
1980: break;
1981: }
1.311 schwarze 1982: }
1.76 kristaps 1983:
1.238 schwarze 1984: if (*cp == '\0')
1.277 schwarze 1985: return ROFF_IGN;
1.78 kristaps 1986:
1.220 schwarze 1987: /* Get the custom end marker. */
1.107 kristaps 1988:
1.220 schwarze 1989: iname = cp;
1.213 schwarze 1990: namesz = roff_getname(r, &cp, ln, ppos);
1.220 schwarze 1991:
1992: /* Resolve the end marker if it is indirect. */
1993:
1.238 schwarze 1994: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 1995: deftype = ROFFDEF_USER;
1996: name = roff_getstrn(r, iname, namesz, &deftype);
1997: if (name == NULL) {
1.350 ! schwarze 1998: mandoc_msg(MANDOCERR_STR_UNDEF,
! 1999: ln, (int)(iname - buf->buf),
1.220 schwarze 2000: "%.*s", (int)namesz, iname);
2001: namesz = 0;
2002: } else
2003: namesz = strlen(name);
2004: } else
2005: name = iname;
2006:
1.213 schwarze 2007: if (namesz)
2008: r->last->end = mandoc_strndup(name, namesz);
1.78 kristaps 2009:
1.238 schwarze 2010: if (*cp != '\0')
1.350 ! schwarze 2011: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.295 schwarze 2012: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.74 kristaps 2013:
1.277 schwarze 2014: return ROFF_IGN;
1.78 kristaps 2015: }
2016:
1.340 schwarze 2017: static int
1.80 kristaps 2018: roff_block_sub(ROFF_ARGS)
1.79 kristaps 2019: {
1.294 schwarze 2020: enum roff_tok t;
1.79 kristaps 2021: int i, j;
2022:
2023: /*
2024: * First check whether a custom macro exists at this level. If
2025: * it does, then check against it. This is some of groff's
2026: * stranger behaviours. If we encountered a custom end-scope
2027: * tag and that tag also happens to be a "real" macro, then we
2028: * need to try interpreting it again as a real macro. If it's
2029: * not, then return ignore. Else continue.
2030: */
2031:
2032: if (r->last->end) {
1.130 kristaps 2033: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.238 schwarze 2034: if (buf->buf[i] != r->last->end[j])
1.79 kristaps 2035: break;
2036:
1.238 schwarze 2037: if (r->last->end[j] == '\0' &&
2038: (buf->buf[i] == '\0' ||
2039: buf->buf[i] == ' ' ||
2040: buf->buf[i] == '\t')) {
1.79 kristaps 2041: roffnode_pop(r);
2042: roffnode_cleanscope(r);
2043:
1.238 schwarze 2044: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.130 kristaps 2045: i++;
2046:
2047: pos = i;
1.238 schwarze 2048: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.294 schwarze 2049: TOKEN_NONE)
1.277 schwarze 2050: return ROFF_RERUN;
2051: return ROFF_IGN;
1.79 kristaps 2052: }
2053: }
2054:
2055: /*
2056: * If we have no custom end-query or lookup failed, then try
2057: * pulling it out of the hashtable.
2058: */
2059:
1.238 schwarze 2060: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.79 kristaps 2061:
1.238 schwarze 2062: if (t != ROFF_cblock) {
2063: if (tok != ROFF_ig)
2064: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.277 schwarze 2065: return ROFF_IGN;
1.106 kristaps 2066: }
1.79 kristaps 2067:
1.277 schwarze 2068: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 2069: }
2070:
1.340 schwarze 2071: static int
1.80 kristaps 2072: roff_block_text(ROFF_ARGS)
1.78 kristaps 2073: {
2074:
1.238 schwarze 2075: if (tok != ROFF_ig)
2076: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.106 kristaps 2077:
1.277 schwarze 2078: return ROFF_IGN;
1.78 kristaps 2079: }
2080:
1.340 schwarze 2081: static int
1.82 kristaps 2082: roff_cond_sub(ROFF_ARGS)
2083: {
1.340 schwarze 2084: char *ep;
2085: int endloop, irc, rr;
1.294 schwarze 2086: enum roff_tok t;
1.82 kristaps 2087:
1.340 schwarze 2088: irc = ROFF_IGN;
1.82 kristaps 2089: rr = r->last->rule;
1.340 schwarze 2090: endloop = tok != ROFF_while ? ROFF_IGN :
2091: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2092: if (roffnode_cleanscope(r))
2093: irc |= endloop;
1.144 kristaps 2094:
1.196 schwarze 2095: /*
2096: * If `\}' occurs on a macro line without a preceding macro,
2097: * drop the line completely.
2098: */
2099:
1.238 schwarze 2100: ep = buf->buf + pos;
2101: if (ep[0] == '\\' && ep[1] == '}')
1.198 schwarze 2102: rr = 0;
1.196 schwarze 2103:
1.343 schwarze 2104: /*
2105: * The closing delimiter `\}' rewinds the conditional scope
2106: * but is otherwise ignored when interpreting the line.
2107: */
1.144 kristaps 2108:
1.238 schwarze 2109: while ((ep = strchr(ep, '\\')) != NULL) {
1.318 schwarze 2110: switch (ep[1]) {
2111: case '}':
2112: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1.340 schwarze 2113: if (roff_ccond(r, ln, ep - buf->buf))
2114: irc |= endloop;
1.318 schwarze 2115: break;
2116: case '\0':
2117: ++ep;
2118: break;
2119: default:
2120: ep += 2;
2121: break;
1.197 schwarze 2122: }
1.177 schwarze 2123: }
1.318 schwarze 2124:
2125: /*
2126: * Fully handle known macros when they are structurally
2127: * required or when the conditional evaluated to true.
2128: */
2129:
2130: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.340 schwarze 2131: irc |= t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT) ?
2132: (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs) :
2133: rr ? ROFF_CONT : ROFF_IGN;
2134: return irc;
1.82 kristaps 2135: }
2136:
1.340 schwarze 2137: static int
1.82 kristaps 2138: roff_cond_text(ROFF_ARGS)
1.78 kristaps 2139: {
1.140 kristaps 2140: char *ep;
1.340 schwarze 2141: int endloop, irc, rr;
1.82 kristaps 2142:
1.340 schwarze 2143: irc = ROFF_IGN;
1.82 kristaps 2144: rr = r->last->rule;
1.340 schwarze 2145: endloop = tok != ROFF_while ? ROFF_IGN :
2146: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2147: if (roffnode_cleanscope(r))
2148: irc |= endloop;
1.82 kristaps 2149:
1.343 schwarze 2150: /*
2151: * If `\}' occurs on a text line with neither preceding
2152: * nor following characters, drop the line completely.
2153: */
2154:
1.238 schwarze 2155: ep = buf->buf + pos;
1.343 schwarze 2156: if (strcmp(ep, "\\}") == 0)
2157: rr = 0;
2158:
2159: /*
2160: * The closing delimiter `\}' rewinds the conditional scope
2161: * but is otherwise ignored when interpreting the line.
2162: */
2163:
1.238 schwarze 2164: while ((ep = strchr(ep, '\\')) != NULL) {
1.343 schwarze 2165: switch (ep[1]) {
2166: case '}':
2167: memmove(ep, ep + 2, strlen(ep + 2) + 1);
2168: if (roff_ccond(r, ln, ep - buf->buf))
1.340 schwarze 2169: irc |= endloop;
1.343 schwarze 2170: break;
2171: case '\0':
2172: ++ep;
2173: break;
2174: default:
2175: ep += 2;
2176: break;
1.197 schwarze 2177: }
1.78 kristaps 2178: }
1.340 schwarze 2179: if (rr)
2180: irc |= ROFF_CONT;
2181: return irc;
1.74 kristaps 2182: }
2183:
1.266 schwarze 2184: /* --- handling of numeric and conditional expressions -------------------- */
2185:
1.204 schwarze 2186: /*
2187: * Parse a single signed integer number. Stop at the first non-digit.
2188: * If there is at least one digit, return success and advance the
2189: * parse point, else return failure and let the parse point unchanged.
2190: * Ignore overflows, treat them just like the C language.
2191: */
1.184 schwarze 2192: static int
1.261 schwarze 2193: roff_getnum(const char *v, int *pos, int *res, int flags)
1.184 schwarze 2194: {
1.261 schwarze 2195: int myres, scaled, n, p;
1.206 schwarze 2196:
2197: if (NULL == res)
2198: res = &myres;
1.184 schwarze 2199:
2200: p = *pos;
2201: n = v[p] == '-';
1.261 schwarze 2202: if (n || v[p] == '+')
1.184 schwarze 2203: p++;
2204:
1.261 schwarze 2205: if (flags & ROFFNUM_WHITE)
2206: while (isspace((unsigned char)v[p]))
2207: p++;
2208:
1.184 schwarze 2209: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.204 schwarze 2210: *res = 10 * *res + v[p] - '0';
1.184 schwarze 2211: if (p == *pos + n)
2212: return 0;
2213:
2214: if (n)
2215: *res = -*res;
2216:
1.254 schwarze 2217: /* Each number may be followed by one optional scaling unit. */
2218:
2219: switch (v[p]) {
2220: case 'f':
1.261 schwarze 2221: scaled = *res * 65536;
1.254 schwarze 2222: break;
2223: case 'i':
1.261 schwarze 2224: scaled = *res * 240;
1.254 schwarze 2225: break;
2226: case 'c':
1.261 schwarze 2227: scaled = *res * 240 / 2.54;
1.254 schwarze 2228: break;
2229: case 'v':
2230: case 'P':
1.261 schwarze 2231: scaled = *res * 40;
1.254 schwarze 2232: break;
2233: case 'm':
2234: case 'n':
1.261 schwarze 2235: scaled = *res * 24;
1.254 schwarze 2236: break;
2237: case 'p':
1.261 schwarze 2238: scaled = *res * 10 / 3;
1.254 schwarze 2239: break;
2240: case 'u':
1.261 schwarze 2241: scaled = *res;
1.254 schwarze 2242: break;
2243: case 'M':
1.261 schwarze 2244: scaled = *res * 6 / 25;
1.254 schwarze 2245: break;
2246: default:
1.261 schwarze 2247: scaled = *res;
1.254 schwarze 2248: p--;
2249: break;
2250: }
1.261 schwarze 2251: if (flags & ROFFNUM_SCALE)
2252: *res = scaled;
1.254 schwarze 2253:
2254: *pos = p + 1;
1.277 schwarze 2255: return 1;
1.184 schwarze 2256: }
2257:
1.198 schwarze 2258: /*
2259: * Evaluate a string comparison condition.
2260: * The first character is the delimiter.
2261: * Succeed if the string up to its second occurrence
2262: * matches the string up to its third occurence.
2263: * Advance the cursor after the third occurrence
2264: * or lacking that, to the end of the line.
2265: */
2266: static int
2267: roff_evalstrcond(const char *v, int *pos)
2268: {
2269: const char *s1, *s2, *s3;
2270: int match;
2271:
2272: match = 0;
2273: s1 = v + *pos; /* initial delimiter */
2274: s2 = s1 + 1; /* for scanning the first string */
2275: s3 = strchr(s2, *s1); /* for scanning the second string */
2276:
2277: if (NULL == s3) /* found no middle delimiter */
2278: goto out;
2279:
2280: while ('\0' != *++s3) {
2281: if (*s2 != *s3) { /* mismatch */
2282: s3 = strchr(s3, *s1);
2283: break;
2284: }
2285: if (*s3 == *s1) { /* found the final delimiter */
2286: match = 1;
2287: break;
2288: }
2289: s2++;
2290: }
2291:
2292: out:
2293: if (NULL == s3)
2294: s3 = strchr(s2, '\0');
1.242 schwarze 2295: else if (*s3 != '\0')
1.198 schwarze 2296: s3++;
2297: *pos = s3 - v;
1.277 schwarze 2298: return match;
1.198 schwarze 2299: }
2300:
1.204 schwarze 2301: /*
2302: * Evaluate an optionally negated single character, numerical,
2303: * or string condition.
2304: */
1.198 schwarze 2305: static int
1.271 schwarze 2306: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.88 kristaps 2307: {
1.336 schwarze 2308: const char *start, *end;
2309: char *cp, *name;
2310: size_t sz;
2311: int deftype, len, number, savepos, istrue, wanttrue;
1.88 kristaps 2312:
1.198 schwarze 2313: if ('!' == v[*pos]) {
2314: wanttrue = 0;
2315: (*pos)++;
2316: } else
2317: wanttrue = 1;
2318:
1.88 kristaps 2319: switch (v[*pos]) {
1.240 schwarze 2320: case '\0':
1.277 schwarze 2321: return 0;
1.207 schwarze 2322: case 'n':
2323: case 'o':
1.88 kristaps 2324: (*pos)++;
1.277 schwarze 2325: return wanttrue;
1.207 schwarze 2326: case 'e':
2327: case 't':
1.239 schwarze 2328: case 'v':
1.88 kristaps 2329: (*pos)++;
1.277 schwarze 2330: return !wanttrue;
1.336 schwarze 2331: case 'c':
2332: do {
2333: (*pos)++;
2334: } while (v[*pos] == ' ');
2335:
2336: /*
2337: * Quirk for groff compatibility:
2338: * The horizontal tab is neither available nor unavailable.
2339: */
2340:
2341: if (v[*pos] == '\t') {
2342: (*pos)++;
2343: return 0;
2344: }
2345:
2346: /* Printable ASCII characters are available. */
2347:
2348: if (v[*pos] != '\\') {
2349: (*pos)++;
2350: return wanttrue;
2351: }
2352:
2353: end = v + ++*pos;
2354: switch (mandoc_escape(&end, &start, &len)) {
2355: case ESCAPE_SPECIAL:
2356: istrue = mchars_spec2cp(start, len) != -1;
2357: break;
2358: case ESCAPE_UNICODE:
2359: istrue = 1;
2360: break;
2361: case ESCAPE_NUMBERED:
2362: istrue = mchars_num2char(start, len) != -1;
2363: break;
2364: default:
2365: istrue = !wanttrue;
2366: break;
2367: }
2368: *pos = end - v;
2369: return istrue == wanttrue;
1.310 schwarze 2370: case 'd':
1.271 schwarze 2371: case 'r':
1.310 schwarze 2372: cp = v + *pos + 1;
2373: while (*cp == ' ')
2374: cp++;
2375: name = cp;
2376: sz = roff_getname(r, &cp, ln, cp - v);
1.315 schwarze 2377: if (sz == 0)
2378: istrue = 0;
2379: else if (v[*pos] == 'r')
2380: istrue = roff_hasregn(r, name, sz);
2381: else {
2382: deftype = ROFFDEF_ANY;
2383: roff_getstrn(r, name, sz, &deftype);
2384: istrue = !!deftype;
2385: }
1.271 schwarze 2386: *pos = cp - v;
1.310 schwarze 2387: return istrue == wanttrue;
1.88 kristaps 2388: default:
2389: break;
2390: }
2391:
1.241 schwarze 2392: savepos = *pos;
1.261 schwarze 2393: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.277 schwarze 2394: return (number > 0) == wanttrue;
1.241 schwarze 2395: else if (*pos == savepos)
1.277 schwarze 2396: return roff_evalstrcond(v, pos) == wanttrue;
1.204 schwarze 2397: else
1.277 schwarze 2398: return 0;
1.88 kristaps 2399: }
2400:
1.340 schwarze 2401: static int
1.103 kristaps 2402: roff_line_ignore(ROFF_ARGS)
1.89 kristaps 2403: {
1.123 schwarze 2404:
1.277 schwarze 2405: return ROFF_IGN;
1.89 kristaps 2406: }
2407:
1.340 schwarze 2408: static int
1.251 schwarze 2409: roff_insec(ROFF_ARGS)
2410: {
2411:
1.350 ! schwarze 2412: mandoc_msg(MANDOCERR_REQ_INSEC, ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2413: return ROFF_IGN;
1.251 schwarze 2414: }
2415:
1.340 schwarze 2416: static int
1.251 schwarze 2417: roff_unsupp(ROFF_ARGS)
2418: {
2419:
1.350 ! schwarze 2420: mandoc_msg(MANDOCERR_REQ_UNSUPP, ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2421: return ROFF_IGN;
1.251 schwarze 2422: }
2423:
1.340 schwarze 2424: static int
1.82 kristaps 2425: roff_cond(ROFF_ARGS)
1.74 kristaps 2426: {
1.340 schwarze 2427: int irc;
1.173 schwarze 2428:
2429: roffnode_push(r, tok, NULL, ln, ppos);
1.74 kristaps 2430:
1.207 schwarze 2431: /*
1.134 kristaps 2432: * An `.el' has no conditional body: it will consume the value
2433: * of the current rstack entry set in prior `ie' calls or
1.207 schwarze 2434: * defaults to DENY.
1.134 kristaps 2435: *
2436: * If we're not an `el', however, then evaluate the conditional.
2437: */
1.133 kristaps 2438:
1.238 schwarze 2439: r->last->rule = tok == ROFF_el ?
1.207 schwarze 2440: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.238 schwarze 2441: roff_evalcond(r, ln, buf->buf, &pos);
1.77 kristaps 2442:
1.134 kristaps 2443: /*
2444: * An if-else will put the NEGATION of the current evaluated
2445: * conditional into the stack of rules.
2446: */
2447:
1.238 schwarze 2448: if (tok == ROFF_ie) {
1.223 schwarze 2449: if (r->rstackpos + 1 == r->rstacksz) {
2450: r->rstacksz += 16;
2451: r->rstack = mandoc_reallocarray(r->rstack,
2452: r->rstacksz, sizeof(int));
1.134 kristaps 2453: }
1.198 schwarze 2454: r->rstack[++r->rstackpos] = !r->last->rule;
1.82 kristaps 2455: }
1.88 kristaps 2456:
2457: /* If the parent has false as its rule, then so do we. */
2458:
1.198 schwarze 2459: if (r->last->parent && !r->last->parent->rule)
2460: r->last->rule = 0;
1.88 kristaps 2461:
2462: /*
1.173 schwarze 2463: * Determine scope.
2464: * If there is nothing on the line after the conditional,
2465: * not even whitespace, use next-line scope.
1.340 schwarze 2466: * Except that .while does not support next-line scope.
1.88 kristaps 2467: */
1.74 kristaps 2468:
1.340 schwarze 2469: if (buf->buf[pos] == '\0' && tok != ROFF_while) {
1.173 schwarze 2470: r->last->endspan = 2;
2471: goto out;
2472: }
2473:
1.238 schwarze 2474: while (buf->buf[pos] == ' ')
1.173 schwarze 2475: pos++;
2476:
2477: /* An opening brace requests multiline scope. */
1.75 kristaps 2478:
1.238 schwarze 2479: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.75 kristaps 2480: r->last->endspan = -1;
2481: pos += 2;
1.272 schwarze 2482: while (buf->buf[pos] == ' ')
2483: pos++;
1.173 schwarze 2484: goto out;
1.207 schwarze 2485: }
1.74 kristaps 2486:
1.77 kristaps 2487: /*
1.173 schwarze 2488: * Anything else following the conditional causes
2489: * single-line scope. Warn if the scope contains
2490: * nothing but trailing whitespace.
1.77 kristaps 2491: */
2492:
1.238 schwarze 2493: if (buf->buf[pos] == '\0')
1.350 ! schwarze 2494: mandoc_msg(MANDOCERR_COND_EMPTY,
! 2495: ln, ppos, "%s", roff_name[tok]);
1.77 kristaps 2496:
1.173 schwarze 2497: r->last->endspan = 1;
1.74 kristaps 2498:
1.173 schwarze 2499: out:
1.75 kristaps 2500: *offs = pos;
1.340 schwarze 2501: irc = ROFF_RERUN;
2502: if (tok == ROFF_while)
2503: irc |= ROFF_WHILE;
2504: return irc;
1.83 schwarze 2505: }
2506:
1.340 schwarze 2507: static int
1.92 schwarze 2508: roff_ds(ROFF_ARGS)
2509: {
1.212 schwarze 2510: char *string;
2511: const char *name;
2512: size_t namesz;
1.96 kristaps 2513:
1.251 schwarze 2514: /* Ignore groff compatibility mode for now. */
2515:
2516: if (tok == ROFF_ds1)
2517: tok = ROFF_ds;
2518: else if (tok == ROFF_as1)
2519: tok = ROFF_as;
2520:
1.96 kristaps 2521: /*
1.212 schwarze 2522: * The first word is the name of the string.
2523: * If it is empty or terminated by an escape sequence,
2524: * abort the `ds' request without defining anything.
1.96 kristaps 2525: */
1.92 schwarze 2526:
1.238 schwarze 2527: name = string = buf->buf + pos;
2528: if (*name == '\0')
1.277 schwarze 2529: return ROFF_IGN;
1.92 schwarze 2530:
1.212 schwarze 2531: namesz = roff_getname(r, &string, ln, pos);
1.238 schwarze 2532: if (name[namesz] == '\\')
1.277 schwarze 2533: return ROFF_IGN;
1.212 schwarze 2534:
2535: /* Read past the initial double-quote, if any. */
1.238 schwarze 2536: if (*string == '"')
1.92 schwarze 2537: string++;
2538:
1.96 kristaps 2539: /* The rest is the value. */
1.212 schwarze 2540: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2541: ROFF_as == tok);
1.311 schwarze 2542: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.277 schwarze 2543: return ROFF_IGN;
1.92 schwarze 2544: }
2545:
1.204 schwarze 2546: /*
2547: * Parse a single operator, one or two characters long.
2548: * If the operator is recognized, return success and advance the
2549: * parse point, else return failure and let the parse point unchanged.
2550: */
2551: static int
2552: roff_getop(const char *v, int *pos, char *res)
2553: {
2554:
2555: *res = v[*pos];
2556:
2557: switch (*res) {
1.207 schwarze 2558: case '+':
2559: case '-':
2560: case '*':
2561: case '/':
2562: case '%':
2563: case '&':
2564: case ':':
1.204 schwarze 2565: break;
2566: case '<':
2567: switch (v[*pos + 1]) {
1.207 schwarze 2568: case '=':
1.204 schwarze 2569: *res = 'l';
2570: (*pos)++;
2571: break;
1.207 schwarze 2572: case '>':
1.204 schwarze 2573: *res = '!';
2574: (*pos)++;
2575: break;
1.207 schwarze 2576: case '?':
1.204 schwarze 2577: *res = 'i';
2578: (*pos)++;
2579: break;
2580: default:
2581: break;
2582: }
2583: break;
2584: case '>':
2585: switch (v[*pos + 1]) {
1.207 schwarze 2586: case '=':
1.204 schwarze 2587: *res = 'g';
2588: (*pos)++;
2589: break;
1.207 schwarze 2590: case '?':
1.204 schwarze 2591: *res = 'a';
2592: (*pos)++;
2593: break;
2594: default:
2595: break;
2596: }
2597: break;
2598: case '=':
2599: if ('=' == v[*pos + 1])
2600: (*pos)++;
2601: break;
2602: default:
1.277 schwarze 2603: return 0;
1.204 schwarze 2604: }
2605: (*pos)++;
2606:
1.277 schwarze 2607: return *res;
1.204 schwarze 2608: }
2609:
2610: /*
2611: * Evaluate either a parenthesized numeric expression
2612: * or a single signed integer number.
2613: */
2614: static int
1.235 schwarze 2615: roff_evalpar(struct roff *r, int ln,
1.261 schwarze 2616: const char *v, int *pos, int *res, int flags)
1.204 schwarze 2617: {
2618:
2619: if ('(' != v[*pos])
1.277 schwarze 2620: return roff_getnum(v, pos, res, flags);
1.204 schwarze 2621:
2622: (*pos)++;
1.261 schwarze 2623: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.277 schwarze 2624: return 0;
1.204 schwarze 2625:
1.206 schwarze 2626: /*
2627: * Omission of the closing parenthesis
2628: * is an error in validation mode,
2629: * but ignored in evaluation mode.
2630: */
2631:
1.204 schwarze 2632: if (')' == v[*pos])
2633: (*pos)++;
1.206 schwarze 2634: else if (NULL == res)
1.277 schwarze 2635: return 0;
1.204 schwarze 2636:
1.277 schwarze 2637: return 1;
1.204 schwarze 2638: }
2639:
2640: /*
2641: * Evaluate a complete numeric expression.
2642: * Proceed left to right, there is no concept of precedence.
2643: */
2644: static int
1.235 schwarze 2645: roff_evalnum(struct roff *r, int ln, const char *v,
1.261 schwarze 2646: int *pos, int *res, int flags)
1.204 schwarze 2647: {
2648: int mypos, operand2;
2649: char operator;
2650:
2651: if (NULL == pos) {
2652: mypos = 0;
2653: pos = &mypos;
2654: }
2655:
1.261 schwarze 2656: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2657: while (isspace((unsigned char)v[*pos]))
2658: (*pos)++;
2659:
1.261 schwarze 2660: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.277 schwarze 2661: return 0;
1.204 schwarze 2662:
2663: while (1) {
1.261 schwarze 2664: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2665: while (isspace((unsigned char)v[*pos]))
2666: (*pos)++;
2667:
2668: if ( ! roff_getop(v, pos, &operator))
2669: break;
2670:
1.261 schwarze 2671: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2672: while (isspace((unsigned char)v[*pos]))
2673: (*pos)++;
2674:
1.261 schwarze 2675: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.277 schwarze 2676: return 0;
1.204 schwarze 2677:
1.261 schwarze 2678: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2679: while (isspace((unsigned char)v[*pos]))
2680: (*pos)++;
1.206 schwarze 2681:
2682: if (NULL == res)
2683: continue;
1.204 schwarze 2684:
2685: switch (operator) {
1.207 schwarze 2686: case '+':
1.204 schwarze 2687: *res += operand2;
2688: break;
1.207 schwarze 2689: case '-':
1.204 schwarze 2690: *res -= operand2;
2691: break;
1.207 schwarze 2692: case '*':
1.204 schwarze 2693: *res *= operand2;
2694: break;
1.207 schwarze 2695: case '/':
1.244 schwarze 2696: if (operand2 == 0) {
1.235 schwarze 2697: mandoc_msg(MANDOCERR_DIVZERO,
1.350 ! schwarze 2698: ln, *pos, "%s", v);
1.234 kristaps 2699: *res = 0;
2700: break;
2701: }
1.204 schwarze 2702: *res /= operand2;
2703: break;
1.207 schwarze 2704: case '%':
1.244 schwarze 2705: if (operand2 == 0) {
2706: mandoc_msg(MANDOCERR_DIVZERO,
1.350 ! schwarze 2707: ln, *pos, "%s", v);
1.244 schwarze 2708: *res = 0;
2709: break;
2710: }
1.204 schwarze 2711: *res %= operand2;
2712: break;
1.207 schwarze 2713: case '<':
1.204 schwarze 2714: *res = *res < operand2;
2715: break;
1.207 schwarze 2716: case '>':
1.204 schwarze 2717: *res = *res > operand2;
2718: break;
1.207 schwarze 2719: case 'l':
1.204 schwarze 2720: *res = *res <= operand2;
2721: break;
1.207 schwarze 2722: case 'g':
1.204 schwarze 2723: *res = *res >= operand2;
2724: break;
1.207 schwarze 2725: case '=':
1.204 schwarze 2726: *res = *res == operand2;
2727: break;
1.207 schwarze 2728: case '!':
1.204 schwarze 2729: *res = *res != operand2;
2730: break;
1.207 schwarze 2731: case '&':
1.204 schwarze 2732: *res = *res && operand2;
2733: break;
1.207 schwarze 2734: case ':':
1.204 schwarze 2735: *res = *res || operand2;
2736: break;
1.207 schwarze 2737: case 'i':
1.204 schwarze 2738: if (operand2 < *res)
2739: *res = operand2;
2740: break;
1.207 schwarze 2741: case 'a':
1.204 schwarze 2742: if (operand2 > *res)
2743: *res = operand2;
2744: break;
2745: default:
2746: abort();
2747: }
2748: }
1.277 schwarze 2749: return 1;
1.204 schwarze 2750: }
2751:
1.266 schwarze 2752: /* --- register management ------------------------------------------------ */
2753:
1.180 schwarze 2754: void
1.187 schwarze 2755: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.147 kristaps 2756: {
1.327 schwarze 2757: roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
1.326 schwarze 2758: }
2759:
2760: static void
2761: roff_setregn(struct roff *r, const char *name, size_t len,
1.327 schwarze 2762: int val, char sign, int step)
1.326 schwarze 2763: {
1.180 schwarze 2764: struct roffreg *reg;
2765:
2766: /* Search for an existing register with the same name. */
2767: reg = r->regtab;
2768:
1.326 schwarze 2769: while (reg != NULL && (reg->key.sz != len ||
2770: strncmp(reg->key.p, name, len) != 0))
1.180 schwarze 2771: reg = reg->next;
1.147 kristaps 2772:
1.180 schwarze 2773: if (NULL == reg) {
2774: /* Create a new register. */
2775: reg = mandoc_malloc(sizeof(struct roffreg));
1.326 schwarze 2776: reg->key.p = mandoc_strndup(name, len);
2777: reg->key.sz = len;
1.187 schwarze 2778: reg->val = 0;
1.327 schwarze 2779: reg->step = 0;
1.180 schwarze 2780: reg->next = r->regtab;
2781: r->regtab = reg;
2782: }
2783:
1.187 schwarze 2784: if ('+' == sign)
2785: reg->val += val;
2786: else if ('-' == sign)
2787: reg->val -= val;
2788: else
2789: reg->val = val;
1.327 schwarze 2790: if (step != INT_MIN)
2791: reg->step = step;
1.147 kristaps 2792: }
2793:
1.192 schwarze 2794: /*
2795: * Handle some predefined read-only number registers.
2796: * For now, return -1 if the requested register is not predefined;
2797: * in case a predefined read-only register having the value -1
2798: * were to turn up, another special value would have to be chosen.
2799: */
2800: static int
1.273 schwarze 2801: roff_getregro(const struct roff *r, const char *name)
1.192 schwarze 2802: {
2803:
2804: switch (*name) {
1.273 schwarze 2805: case '$': /* Number of arguments of the last macro evaluated. */
1.339 schwarze 2806: return r->mstackpos < 0 ? 0 : r->mstack[r->mstackpos].argc;
1.207 schwarze 2807: case 'A': /* ASCII approximation mode is always off. */
1.277 schwarze 2808: return 0;
1.207 schwarze 2809: case 'g': /* Groff compatibility mode is always on. */
1.277 schwarze 2810: return 1;
1.207 schwarze 2811: case 'H': /* Fixed horizontal resolution. */
1.277 schwarze 2812: return 24;
1.207 schwarze 2813: case 'j': /* Always adjust left margin only. */
1.277 schwarze 2814: return 0;
1.207 schwarze 2815: case 'T': /* Some output device is always defined. */
1.277 schwarze 2816: return 1;
1.207 schwarze 2817: case 'V': /* Fixed vertical resolution. */
1.277 schwarze 2818: return 40;
1.192 schwarze 2819: default:
1.277 schwarze 2820: return -1;
1.192 schwarze 2821: }
2822: }
2823:
1.181 schwarze 2824: int
1.326 schwarze 2825: roff_getreg(struct roff *r, const char *name)
1.147 kristaps 2826: {
1.327 schwarze 2827: return roff_getregn(r, name, strlen(name), '\0');
1.181 schwarze 2828: }
2829:
2830: static int
1.327 schwarze 2831: roff_getregn(struct roff *r, const char *name, size_t len, char sign)
1.181 schwarze 2832: {
2833: struct roffreg *reg;
1.192 schwarze 2834: int val;
2835:
2836: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2837: val = roff_getregro(r, name + 1);
1.192 schwarze 2838: if (-1 != val)
1.277 schwarze 2839: return val;
1.192 schwarze 2840: }
1.181 schwarze 2841:
1.327 schwarze 2842: for (reg = r->regtab; reg; reg = reg->next) {
1.181 schwarze 2843: if (len == reg->key.sz &&
1.327 schwarze 2844: 0 == strncmp(name, reg->key.p, len)) {
2845: switch (sign) {
2846: case '+':
2847: reg->val += reg->step;
2848: break;
2849: case '-':
2850: reg->val -= reg->step;
2851: break;
2852: default:
2853: break;
2854: }
1.277 schwarze 2855: return reg->val;
1.327 schwarze 2856: }
2857: }
1.271 schwarze 2858:
1.327 schwarze 2859: roff_setregn(r, name, len, 0, '\0', INT_MIN);
1.277 schwarze 2860: return 0;
1.271 schwarze 2861: }
2862:
2863: static int
2864: roff_hasregn(const struct roff *r, const char *name, size_t len)
2865: {
2866: struct roffreg *reg;
2867: int val;
2868:
2869: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2870: val = roff_getregro(r, name + 1);
1.271 schwarze 2871: if (-1 != val)
1.277 schwarze 2872: return 1;
1.271 schwarze 2873: }
2874:
2875: for (reg = r->regtab; reg; reg = reg->next)
2876: if (len == reg->key.sz &&
2877: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2878: return 1;
1.147 kristaps 2879:
1.277 schwarze 2880: return 0;
1.147 kristaps 2881: }
2882:
1.180 schwarze 2883: static void
2884: roff_freereg(struct roffreg *reg)
1.147 kristaps 2885: {
1.180 schwarze 2886: struct roffreg *old_reg;
1.147 kristaps 2887:
1.180 schwarze 2888: while (NULL != reg) {
2889: free(reg->key.p);
2890: old_reg = reg;
2891: reg = reg->next;
2892: free(old_reg);
2893: }
1.147 kristaps 2894: }
1.92 schwarze 2895:
1.340 schwarze 2896: static int
1.89 kristaps 2897: roff_nr(ROFF_ARGS)
1.83 schwarze 2898: {
1.327 schwarze 2899: char *key, *val, *step;
1.212 schwarze 2900: size_t keysz;
1.327 schwarze 2901: int iv, is, len;
1.187 schwarze 2902: char sign;
1.89 kristaps 2903:
1.238 schwarze 2904: key = val = buf->buf + pos;
2905: if (*key == '\0')
1.277 schwarze 2906: return ROFF_IGN;
1.212 schwarze 2907:
2908: keysz = roff_getname(r, &val, ln, pos);
1.238 schwarze 2909: if (key[keysz] == '\\')
1.277 schwarze 2910: return ROFF_IGN;
1.89 kristaps 2911:
1.187 schwarze 2912: sign = *val;
1.238 schwarze 2913: if (sign == '+' || sign == '-')
1.187 schwarze 2914: val++;
2915:
1.327 schwarze 2916: len = 0;
2917: if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
2918: return ROFF_IGN;
2919:
2920: step = val + len;
2921: while (isspace((unsigned char)*step))
2922: step++;
2923: if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)
2924: is = INT_MIN;
1.109 kristaps 2925:
1.327 schwarze 2926: roff_setregn(r, key, keysz, iv, sign, is);
1.277 schwarze 2927: return ROFF_IGN;
1.203 schwarze 2928: }
2929:
1.340 schwarze 2930: static int
1.203 schwarze 2931: roff_rr(ROFF_ARGS)
2932: {
2933: struct roffreg *reg, **prev;
1.212 schwarze 2934: char *name, *cp;
2935: size_t namesz;
1.203 schwarze 2936:
1.238 schwarze 2937: name = cp = buf->buf + pos;
2938: if (*name == '\0')
1.277 schwarze 2939: return ROFF_IGN;
1.212 schwarze 2940: namesz = roff_getname(r, &cp, ln, pos);
2941: name[namesz] = '\0';
1.203 schwarze 2942:
2943: prev = &r->regtab;
2944: while (1) {
2945: reg = *prev;
1.238 schwarze 2946: if (reg == NULL || !strcmp(name, reg->key.p))
1.203 schwarze 2947: break;
2948: prev = ®->next;
2949: }
1.238 schwarze 2950: if (reg != NULL) {
1.203 schwarze 2951: *prev = reg->next;
2952: free(reg->key.p);
2953: free(reg);
2954: }
1.277 schwarze 2955: return ROFF_IGN;
1.122 schwarze 2956: }
2957:
1.266 schwarze 2958: /* --- handler functions for roff requests -------------------------------- */
2959:
1.340 schwarze 2960: static int
1.122 schwarze 2961: roff_rm(ROFF_ARGS)
2962: {
2963: const char *name;
2964: char *cp;
1.212 schwarze 2965: size_t namesz;
1.122 schwarze 2966:
1.238 schwarze 2967: cp = buf->buf + pos;
2968: while (*cp != '\0') {
1.212 schwarze 2969: name = cp;
1.238 schwarze 2970: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.212 schwarze 2971: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.311 schwarze 2972: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.238 schwarze 2973: if (name[namesz] == '\\')
1.212 schwarze 2974: break;
1.122 schwarze 2975: }
1.277 schwarze 2976: return ROFF_IGN;
1.178 schwarze 2977: }
2978:
1.340 schwarze 2979: static int
1.178 schwarze 2980: roff_it(ROFF_ARGS)
2981: {
2982: int iv;
2983:
2984: /* Parse the number of lines. */
1.261 schwarze 2985:
2986: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.350 ! schwarze 2987: mandoc_msg(MANDOCERR_IT_NONUM,
! 2988: ln, ppos, "%s", buf->buf + 1);
1.277 schwarze 2989: return ROFF_IGN;
1.178 schwarze 2990: }
2991:
1.262 schwarze 2992: while (isspace((unsigned char)buf->buf[pos]))
2993: pos++;
2994:
2995: /*
2996: * Arm the input line trap.
2997: * Special-casing "an-trap" is an ugly workaround to cope
2998: * with DocBook stupidly fiddling with man(7) internals.
2999: */
1.261 schwarze 3000:
1.178 schwarze 3001: roffit_lines = iv;
1.262 schwarze 3002: roffit_macro = mandoc_strdup(iv != 1 ||
3003: strcmp(buf->buf + pos, "an-trap") ?
3004: buf->buf + pos : "br");
1.277 schwarze 3005: return ROFF_IGN;
1.175 schwarze 3006: }
3007:
1.340 schwarze 3008: static int
1.175 schwarze 3009: roff_Dd(ROFF_ARGS)
3010: {
1.315 schwarze 3011: int mask;
3012: enum roff_tok t, te;
1.227 schwarze 3013:
1.315 schwarze 3014: switch (tok) {
3015: case ROFF_Dd:
3016: tok = MDOC_Dd;
3017: te = MDOC_MAX;
3018: if (r->format == 0)
3019: r->format = MPARSE_MDOC;
3020: mask = MPARSE_MDOC | MPARSE_QUICK;
3021: break;
3022: case ROFF_TH:
3023: tok = MAN_TH;
3024: te = MAN_MAX;
3025: if (r->format == 0)
3026: r->format = MPARSE_MAN;
3027: mask = MPARSE_QUICK;
3028: break;
3029: default:
3030: abort();
3031: }
3032: if ((r->options & mask) == 0)
3033: for (t = tok; t < te; t++)
3034: roff_setstr(r, roff_name[t], NULL, 0);
1.277 schwarze 3035: return ROFF_CONT;
1.109 kristaps 3036: }
3037:
1.340 schwarze 3038: static int
1.109 kristaps 3039: roff_TE(ROFF_ARGS)
3040: {
1.321 schwarze 3041: if (r->tbl == NULL) {
1.350 ! schwarze 3042: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "TE");
1.321 schwarze 3043: return ROFF_IGN;
3044: }
1.346 schwarze 3045: if (tbl_end(r->tbl, 0) == 0) {
1.321 schwarze 3046: r->tbl = NULL;
1.258 schwarze 3047: free(buf->buf);
3048: buf->buf = mandoc_strdup(".sp");
3049: buf->sz = 4;
1.329 schwarze 3050: *offs = 0;
1.277 schwarze 3051: return ROFF_REPARSE;
1.258 schwarze 3052: }
1.321 schwarze 3053: r->tbl = NULL;
1.277 schwarze 3054: return ROFF_IGN;
1.112 kristaps 3055: }
3056:
1.340 schwarze 3057: static int
1.112 kristaps 3058: roff_T_(ROFF_ARGS)
3059: {
3060:
3061: if (NULL == r->tbl)
1.350 ! schwarze 3062: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "T&");
1.112 kristaps 3063: else
1.296 schwarze 3064: tbl_restart(ln, ppos, r->tbl);
1.112 kristaps 3065:
1.277 schwarze 3066: return ROFF_IGN;
1.109 kristaps 3067: }
3068:
1.230 schwarze 3069: /*
3070: * Handle in-line equation delimiters.
3071: */
1.340 schwarze 3072: static int
1.238 schwarze 3073: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.151 kristaps 3074: {
1.233 schwarze 3075: char *cp1, *cp2;
3076: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.151 kristaps 3077:
1.230 schwarze 3078: /*
3079: * Outside equations, look for an opening delimiter.
3080: * If we are inside an equation, we already know it is
3081: * in-line, or this function wouldn't have been called;
3082: * so look for a closing delimiter.
3083: */
3084:
1.238 schwarze 3085: cp1 = buf->buf + pos;
1.230 schwarze 3086: cp2 = strchr(cp1, r->eqn == NULL ?
3087: r->last_eqn->odelim : r->last_eqn->cdelim);
3088: if (cp2 == NULL)
1.277 schwarze 3089: return ROFF_CONT;
1.230 schwarze 3090:
1.233 schwarze 3091: *cp2++ = '\0';
3092: bef_pr = bef_nl = aft_nl = aft_pr = "";
3093:
3094: /* Handle preceding text, protecting whitespace. */
3095:
1.238 schwarze 3096: if (*buf->buf != '\0') {
1.233 schwarze 3097: if (r->eqn == NULL)
3098: bef_pr = "\\&";
3099: bef_nl = "\n";
3100: }
3101:
3102: /*
3103: * Prepare replacing the delimiter with an equation macro
3104: * and drop leading white space from the equation.
3105: */
1.230 schwarze 3106:
1.233 schwarze 3107: if (r->eqn == NULL) {
3108: while (*cp2 == ' ')
3109: cp2++;
3110: mac = ".EQ";
3111: } else
3112: mac = ".EN";
3113:
3114: /* Handle following text, protecting whitespace. */
3115:
3116: if (*cp2 != '\0') {
3117: aft_nl = "\n";
3118: if (r->eqn != NULL)
3119: aft_pr = "\\&";
3120: }
3121:
3122: /* Do the actual replacement. */
3123:
1.238 schwarze 3124: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.233 schwarze 3125: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.238 schwarze 3126: free(buf->buf);
3127: buf->buf = cp1;
1.230 schwarze 3128:
3129: /* Toggle the in-line state of the eqn subsystem. */
3130:
3131: r->eqn_inline = r->eqn == NULL;
1.277 schwarze 3132: return ROFF_REPARSE;
1.151 kristaps 3133: }
3134:
1.340 schwarze 3135: static int
1.235 schwarze 3136: roff_EQ(ROFF_ARGS)
1.125 kristaps 3137: {
1.319 schwarze 3138: struct roff_node *n;
3139:
1.322 schwarze 3140: if (r->man->macroset == MACROSET_MAN)
3141: man_breakscope(r->man, ROFF_EQ);
1.319 schwarze 3142: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
3143: if (ln > r->man->last->line)
3144: n->flags |= NODE_LINE;
1.348 schwarze 3145: n->eqn = eqn_box_new();
1.319 schwarze 3146: roff_node_append(r->man, n);
3147: r->man->next = ROFF_NEXT_SIBLING;
1.125 kristaps 3148:
1.238 schwarze 3149: assert(r->eqn == NULL);
1.319 schwarze 3150: if (r->last_eqn == NULL)
3151: r->last_eqn = eqn_alloc(r->parse);
3152: else
3153: eqn_reset(r->last_eqn);
3154: r->eqn = r->last_eqn;
3155: r->eqn->node = n;
1.151 kristaps 3156:
1.238 schwarze 3157: if (buf->buf[pos] != '\0')
1.350 ! schwarze 3158: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.238 schwarze 3159: ".EQ %s", buf->buf + pos);
1.151 kristaps 3160:
1.277 schwarze 3161: return ROFF_IGN;
1.125 kristaps 3162: }
3163:
1.340 schwarze 3164: static int
1.125 kristaps 3165: roff_EN(ROFF_ARGS)
3166: {
1.319 schwarze 3167: if (r->eqn != NULL) {
3168: eqn_parse(r->eqn);
3169: r->eqn = NULL;
3170: } else
1.350 ! schwarze 3171: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "EN");
1.319 schwarze 3172: if (buf->buf[pos] != '\0')
1.350 ! schwarze 3173: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.319 schwarze 3174: "EN %s", buf->buf + pos);
1.277 schwarze 3175: return ROFF_IGN;
1.125 kristaps 3176: }
3177:
1.340 schwarze 3178: static int
1.109 kristaps 3179: roff_TS(ROFF_ARGS)
3180: {
1.321 schwarze 3181: if (r->tbl != NULL) {
1.350 ! schwarze 3182: mandoc_msg(MANDOCERR_BLK_BROKEN, ln, ppos, "TS breaks TS");
1.346 schwarze 3183: tbl_end(r->tbl, 0);
1.115 kristaps 3184: }
1.346 schwarze 3185: r->tbl = tbl_alloc(ppos, ln, r->parse, r->last_tbl);
3186: if (r->last_tbl == NULL)
1.321 schwarze 3187: r->first_tbl = r->tbl;
3188: r->last_tbl = r->tbl;
1.297 schwarze 3189: return ROFF_IGN;
3190: }
3191:
1.340 schwarze 3192: static int
1.297 schwarze 3193: roff_onearg(ROFF_ARGS)
3194: {
3195: struct roff_node *n;
3196: char *cp;
1.305 schwarze 3197: int npos;
1.297 schwarze 3198:
1.302 schwarze 3199: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.320 schwarze 3200: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
3201: tok == ROFF_ti))
1.302 schwarze 3202: man_breakscope(r->man, tok);
3203:
1.309 schwarze 3204: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.305 schwarze 3205: r->man->last = roffce_node;
3206: r->man->next = ROFF_NEXT_SIBLING;
3207: }
3208:
1.297 schwarze 3209: roff_elem_alloc(r->man, ln, ppos, tok);
3210: n = r->man->last;
3211:
3212: cp = buf->buf + pos;
3213: if (*cp != '\0') {
3214: while (*cp != '\0' && *cp != ' ')
3215: cp++;
3216: while (*cp == ' ')
3217: *cp++ = '\0';
3218: if (*cp != '\0')
1.350 ! schwarze 3219: mandoc_msg(MANDOCERR_ARG_EXCESS,
! 3220: ln, (int)(cp - buf->buf),
1.297 schwarze 3221: "%s ... %s", roff_name[tok], cp);
3222: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.300 schwarze 3223: }
3224:
1.309 schwarze 3225: if (tok == ROFF_ce || tok == ROFF_rj) {
3226: if (r->man->last->type == ROFFT_ELEM) {
1.305 schwarze 3227: roff_word_alloc(r->man, ln, pos, "1");
3228: r->man->last->flags |= NODE_NOSRC;
3229: }
3230: npos = 0;
3231: if (roff_evalnum(r, ln, r->man->last->string, &npos,
3232: &roffce_lines, 0) == 0) {
1.350 ! schwarze 3233: mandoc_msg(MANDOCERR_CE_NONUM,
! 3234: ln, pos, "ce %s", buf->buf + pos);
1.305 schwarze 3235: roffce_lines = 1;
3236: }
3237: if (roffce_lines < 1) {
3238: r->man->last = r->man->last->parent;
3239: roffce_node = NULL;
3240: roffce_lines = 0;
3241: } else
3242: roffce_node = r->man->last->parent;
3243: } else {
3244: n->flags |= NODE_VALID | NODE_ENDED;
3245: r->man->last = n;
3246: }
3247: n->flags |= NODE_LINE;
1.300 schwarze 3248: r->man->next = ROFF_NEXT_SIBLING;
3249: return ROFF_IGN;
3250: }
3251:
1.340 schwarze 3252: static int
1.300 schwarze 3253: roff_manyarg(ROFF_ARGS)
3254: {
3255: struct roff_node *n;
3256: char *sp, *ep;
3257:
3258: roff_elem_alloc(r->man, ln, ppos, tok);
3259: n = r->man->last;
3260:
3261: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3262: while (*ep != '\0' && *ep != ' ')
3263: ep++;
3264: while (*ep == ' ')
3265: *ep++ = '\0';
3266: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.297 schwarze 3267: }
3268:
3269: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3270: r->man->last = n;
3271: r->man->next = ROFF_NEXT_SIBLING;
1.277 schwarze 3272: return ROFF_IGN;
1.251 schwarze 3273: }
3274:
1.340 schwarze 3275: static int
1.311 schwarze 3276: roff_als(ROFF_ARGS)
3277: {
3278: char *oldn, *newn, *end, *value;
3279: size_t oldsz, newsz, valsz;
3280:
3281: newn = oldn = buf->buf + pos;
3282: if (*newn == '\0')
3283: return ROFF_IGN;
3284:
3285: newsz = roff_getname(r, &oldn, ln, pos);
3286: if (newn[newsz] == '\\' || *oldn == '\0')
3287: return ROFF_IGN;
3288:
3289: end = oldn;
3290: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3291: if (oldsz == 0)
3292: return ROFF_IGN;
3293:
1.338 schwarze 3294: valsz = mandoc_asprintf(&value, ".%.*s \\$@\\\"\n",
1.315 schwarze 3295: (int)oldsz, oldn);
1.311 schwarze 3296: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3297: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3298: free(value);
3299: return ROFF_IGN;
3300: }
3301:
1.340 schwarze 3302: static int
1.296 schwarze 3303: roff_br(ROFF_ARGS)
1.251 schwarze 3304: {
1.302 schwarze 3305: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3306: man_breakscope(r->man, ROFF_br);
1.296 schwarze 3307: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
3308: if (buf->buf[pos] != '\0')
1.350 ! schwarze 3309: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.296 schwarze 3310: "%s %s", roff_name[tok], buf->buf + pos);
3311: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3312: r->man->next = ROFF_NEXT_SIBLING;
3313: return ROFF_IGN;
1.92 schwarze 3314: }
3315:
1.340 schwarze 3316: static int
1.174 kristaps 3317: roff_cc(ROFF_ARGS)
3318: {
3319: const char *p;
3320:
1.238 schwarze 3321: p = buf->buf + pos;
1.174 kristaps 3322:
1.238 schwarze 3323: if (*p == '\0' || (r->control = *p++) == '.')
1.303 schwarze 3324: r->control = '\0';
1.174 kristaps 3325:
1.238 schwarze 3326: if (*p != '\0')
1.350 ! schwarze 3327: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.260 schwarze 3328: ln, p - buf->buf, "cc ... %s", p);
1.174 kristaps 3329:
1.341 schwarze 3330: return ROFF_IGN;
3331: }
3332:
3333: static int
3334: roff_char(ROFF_ARGS)
3335: {
3336: const char *p, *kp, *vp;
3337: size_t ksz, vsz;
3338: int font;
3339:
3340: /* Parse the character to be replaced. */
3341:
3342: kp = buf->buf + pos;
3343: p = kp + 1;
3344: if (*kp == '\0' || (*kp == '\\' &&
3345: mandoc_escape(&p, NULL, NULL) != ESCAPE_SPECIAL) ||
3346: (*p != ' ' && *p != '\0')) {
1.350 ! schwarze 3347: mandoc_msg(MANDOCERR_CHAR_ARG, ln, pos, "char %s", kp);
1.341 schwarze 3348: return ROFF_IGN;
3349: }
3350: ksz = p - kp;
3351: while (*p == ' ')
3352: p++;
3353:
3354: /*
3355: * If the replacement string contains a font escape sequence,
3356: * we have to restore the font at the end.
3357: */
3358:
3359: vp = p;
3360: vsz = strlen(p);
3361: font = 0;
3362: while (*p != '\0') {
3363: if (*p++ != '\\')
3364: continue;
3365: switch (mandoc_escape(&p, NULL, NULL)) {
3366: case ESCAPE_FONT:
3367: case ESCAPE_FONTROMAN:
3368: case ESCAPE_FONTITALIC:
3369: case ESCAPE_FONTBOLD:
3370: case ESCAPE_FONTBI:
1.342 schwarze 3371: case ESCAPE_FONTCW:
1.341 schwarze 3372: case ESCAPE_FONTPREV:
3373: font++;
3374: break;
3375: default:
3376: break;
3377: }
3378: }
3379: if (font > 1)
1.350 ! schwarze 3380: mandoc_msg(MANDOCERR_CHAR_FONT,
! 3381: ln, (int)(vp - buf->buf), "%s", vp);
1.341 schwarze 3382:
3383: /*
3384: * Approximate the effect of .char using the .tr tables.
3385: * XXX In groff, .char and .tr interact differently.
3386: */
3387:
3388: if (ksz == 1) {
3389: if (r->xtab == NULL)
3390: r->xtab = mandoc_calloc(128, sizeof(*r->xtab));
3391: assert((unsigned int)*kp < 128);
3392: free(r->xtab[(int)*kp].p);
3393: r->xtab[(int)*kp].sz = mandoc_asprintf(&r->xtab[(int)*kp].p,
3394: "%s%s", vp, font ? "\fP" : "");
3395: } else {
3396: roff_setstrn(&r->xmbtab, kp, ksz, vp, vsz, 0);
3397: if (font)
3398: roff_setstrn(&r->xmbtab, kp, ksz, "\\fP", 3, 1);
3399: }
1.277 schwarze 3400: return ROFF_IGN;
1.174 kristaps 3401: }
3402:
1.340 schwarze 3403: static int
1.303 schwarze 3404: roff_ec(ROFF_ARGS)
3405: {
3406: const char *p;
3407:
3408: p = buf->buf + pos;
3409: if (*p == '\0')
3410: r->escape = '\\';
3411: else {
3412: r->escape = *p;
3413: if (*++p != '\0')
1.350 ! schwarze 3414: mandoc_msg(MANDOCERR_ARG_EXCESS, ln,
! 3415: (int)(p - buf->buf), "ec ... %s", p);
1.303 schwarze 3416: }
3417: return ROFF_IGN;
3418: }
3419:
1.340 schwarze 3420: static int
1.303 schwarze 3421: roff_eo(ROFF_ARGS)
3422: {
3423: r->escape = '\0';
3424: if (buf->buf[pos] != '\0')
1.350 ! schwarze 3425: mandoc_msg(MANDOCERR_ARG_SKIP,
1.303 schwarze 3426: ln, pos, "eo %s", buf->buf + pos);
3427: return ROFF_IGN;
1.330 schwarze 3428: }
3429:
1.340 schwarze 3430: static int
1.330 schwarze 3431: roff_nop(ROFF_ARGS)
3432: {
3433: while (buf->buf[pos] == ' ')
3434: pos++;
3435: *offs = pos;
3436: return ROFF_RERUN;
1.303 schwarze 3437: }
3438:
1.340 schwarze 3439: static int
1.164 kristaps 3440: roff_tr(ROFF_ARGS)
3441: {
3442: const char *p, *first, *second;
3443: size_t fsz, ssz;
3444: enum mandoc_esc esc;
3445:
1.238 schwarze 3446: p = buf->buf + pos;
1.164 kristaps 3447:
1.238 schwarze 3448: if (*p == '\0') {
1.350 ! schwarze 3449: mandoc_msg(MANDOCERR_REQ_EMPTY, ln, ppos, "tr");
1.277 schwarze 3450: return ROFF_IGN;
1.164 kristaps 3451: }
3452:
1.238 schwarze 3453: while (*p != '\0') {
1.164 kristaps 3454: fsz = ssz = 1;
3455:
3456: first = p++;
1.238 schwarze 3457: if (*first == '\\') {
1.164 kristaps 3458: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3459: if (esc == ESCAPE_ERROR) {
1.350 ! schwarze 3460: mandoc_msg(MANDOCERR_ESC_BAD, ln,
! 3461: (int)(p - buf->buf), "%s", first);
1.277 schwarze 3462: return ROFF_IGN;
1.164 kristaps 3463: }
3464: fsz = (size_t)(p - first);
3465: }
3466:
3467: second = p++;
1.238 schwarze 3468: if (*second == '\\') {
1.164 kristaps 3469: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3470: if (esc == ESCAPE_ERROR) {
1.350 ! schwarze 3471: mandoc_msg(MANDOCERR_ESC_BAD, ln,
! 3472: (int)(p - buf->buf), "%s", second);
1.277 schwarze 3473: return ROFF_IGN;
1.164 kristaps 3474: }
3475: ssz = (size_t)(p - second);
1.238 schwarze 3476: } else if (*second == '\0') {
1.350 ! schwarze 3477: mandoc_msg(MANDOCERR_TR_ODD, ln,
! 3478: (int)(first - buf->buf), "tr %s", first);
1.164 kristaps 3479: second = " ";
1.165 kristaps 3480: p--;
1.164 kristaps 3481: }
3482:
1.167 kristaps 3483: if (fsz > 1) {
1.207 schwarze 3484: roff_setstrn(&r->xmbtab, first, fsz,
3485: second, ssz, 0);
1.167 kristaps 3486: continue;
3487: }
3488:
1.238 schwarze 3489: if (r->xtab == NULL)
1.207 schwarze 3490: r->xtab = mandoc_calloc(128,
3491: sizeof(struct roffstr));
1.167 kristaps 3492:
3493: free(r->xtab[(int)*first].p);
3494: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3495: r->xtab[(int)*first].sz = ssz;
1.164 kristaps 3496: }
3497:
1.277 schwarze 3498: return ROFF_IGN;
1.164 kristaps 3499: }
3500:
1.339 schwarze 3501: /*
3502: * Implementation of the .return request.
3503: * There is no need to call roff_userret() from here.
3504: * The read module will call that after rewinding the reader stack
3505: * to the place from where the current macro was called.
3506: */
1.340 schwarze 3507: static int
1.339 schwarze 3508: roff_return(ROFF_ARGS)
3509: {
3510: if (r->mstackpos >= 0)
1.340 schwarze 3511: return ROFF_IGN | ROFF_USERRET;
1.339 schwarze 3512:
1.350 ! schwarze 3513: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "return");
1.339 schwarze 3514: return ROFF_IGN;
3515: }
3516:
1.340 schwarze 3517: static int
1.306 schwarze 3518: roff_rn(ROFF_ARGS)
3519: {
3520: const char *value;
3521: char *oldn, *newn, *end;
3522: size_t oldsz, newsz;
1.315 schwarze 3523: int deftype;
1.306 schwarze 3524:
3525: oldn = newn = buf->buf + pos;
3526: if (*oldn == '\0')
3527: return ROFF_IGN;
3528:
3529: oldsz = roff_getname(r, &newn, ln, pos);
3530: if (oldn[oldsz] == '\\' || *newn == '\0')
3531: return ROFF_IGN;
3532:
3533: end = newn;
3534: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3535: if (newsz == 0)
3536: return ROFF_IGN;
3537:
1.315 schwarze 3538: deftype = ROFFDEF_ANY;
3539: value = roff_getstrn(r, oldn, oldsz, &deftype);
3540: switch (deftype) {
3541: case ROFFDEF_USER:
1.306 schwarze 3542: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3543: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3544: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.315 schwarze 3545: break;
3546: case ROFFDEF_PRE:
3547: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3548: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3549: break;
3550: case ROFFDEF_REN:
1.306 schwarze 3551: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3552: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.315 schwarze 3553: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3554: break;
3555: case ROFFDEF_STD:
1.306 schwarze 3556: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.315 schwarze 3557: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3558: break;
3559: default:
3560: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3561: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3562: break;
3563: }
1.306 schwarze 3564: return ROFF_IGN;
3565: }
3566:
1.340 schwarze 3567: static int
1.339 schwarze 3568: roff_shift(ROFF_ARGS)
3569: {
3570: struct mctx *ctx;
3571: int levels, i;
3572:
3573: levels = 1;
3574: if (buf->buf[pos] != '\0' &&
3575: roff_evalnum(r, ln, buf->buf, &pos, &levels, 0) == 0) {
1.350 ! schwarze 3576: mandoc_msg(MANDOCERR_CE_NONUM,
1.339 schwarze 3577: ln, pos, "shift %s", buf->buf + pos);
3578: levels = 1;
3579: }
3580: if (r->mstackpos < 0) {
1.350 ! schwarze 3581: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "shift");
1.339 schwarze 3582: return ROFF_IGN;
3583: }
3584: ctx = r->mstack + r->mstackpos;
3585: if (levels > ctx->argc) {
1.350 ! schwarze 3586: mandoc_msg(MANDOCERR_SHIFT,
1.339 schwarze 3587: ln, pos, "%d, but max is %d", levels, ctx->argc);
3588: levels = ctx->argc;
3589: }
3590: if (levels == 0)
3591: return ROFF_IGN;
3592: for (i = 0; i < levels; i++)
3593: free(ctx->argv[i]);
3594: ctx->argc -= levels;
3595: for (i = 0; i < ctx->argc; i++)
3596: ctx->argv[i] = ctx->argv[i + levels];
3597: return ROFF_IGN;
3598: }
3599:
1.340 schwarze 3600: static int
1.105 kristaps 3601: roff_so(ROFF_ARGS)
3602: {
1.249 schwarze 3603: char *name, *cp;
1.105 kristaps 3604:
1.238 schwarze 3605: name = buf->buf + pos;
1.350 ! schwarze 3606: mandoc_msg(MANDOCERR_SO, ln, ppos, "so %s", name);
1.105 kristaps 3607:
3608: /*
3609: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3610: * opening anything that's not in our cwd or anything beneath
3611: * it. Thus, explicitly disallow traversing up the file-system
3612: * or using absolute paths.
3613: */
3614:
1.238 schwarze 3615: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.350 ! schwarze 3616: mandoc_msg(MANDOCERR_SO_PATH, ln, ppos, ".so %s", name);
1.249 schwarze 3617: buf->sz = mandoc_asprintf(&cp,
3618: ".sp\nSee the file %s.\n.sp", name) + 1;
3619: free(buf->buf);
3620: buf->buf = cp;
3621: *offs = 0;
1.277 schwarze 3622: return ROFF_REPARSE;
1.105 kristaps 3623: }
3624:
3625: *offs = pos;
1.277 schwarze 3626: return ROFF_SO;
1.105 kristaps 3627: }
1.92 schwarze 3628:
1.266 schwarze 3629: /* --- user defined strings and macros ------------------------------------ */
3630:
1.340 schwarze 3631: static int
1.106 kristaps 3632: roff_userdef(ROFF_ARGS)
1.99 kristaps 3633: {
1.339 schwarze 3634: struct mctx *ctx;
3635: char *arg, *ap, *dst, *src;
3636: size_t sz;
3637:
3638: /* Initialize a new macro stack context. */
3639:
3640: if (++r->mstackpos == r->mstacksz) {
3641: r->mstack = mandoc_recallocarray(r->mstack,
3642: r->mstacksz, r->mstacksz + 8, sizeof(*r->mstack));
3643: r->mstacksz += 8;
3644: }
3645: ctx = r->mstack + r->mstackpos;
3646: ctx->argsz = 0;
3647: ctx->argc = 0;
3648: ctx->argv = NULL;
3649:
3650: /*
3651: * Collect pointers to macro argument strings,
3652: * NUL-terminating them and escaping quotes.
3653: */
3654:
3655: src = buf->buf + pos;
3656: while (*src != '\0') {
3657: if (ctx->argc == ctx->argsz) {
3658: ctx->argsz += 8;
3659: ctx->argv = mandoc_reallocarray(ctx->argv,
3660: ctx->argsz, sizeof(*ctx->argv));
3661: }
3662: arg = mandoc_getarg(r->parse, &src, ln, &pos);
3663: sz = 1; /* For the terminating NUL. */
3664: for (ap = arg; *ap != '\0'; ap++)
3665: sz += *ap == '"' ? 4 : 1;
3666: ctx->argv[ctx->argc++] = dst = mandoc_malloc(sz);
3667: for (ap = arg; *ap != '\0'; ap++) {
3668: if (*ap == '"') {
3669: memcpy(dst, "\\(dq", 4);
3670: dst += 4;
3671: } else
3672: *dst++ = *ap;
1.106 kristaps 3673: }
1.339 schwarze 3674: *dst = '\0';
1.337 schwarze 3675: }
3676:
1.339 schwarze 3677: /* Replace the macro invocation by the macro definition. */
1.263 schwarze 3678:
1.238 schwarze 3679: free(buf->buf);
1.339 schwarze 3680: buf->buf = mandoc_strdup(r->current_string);
3681: buf->sz = strlen(buf->buf) + 1;
1.248 schwarze 3682: *offs = 0;
1.106 kristaps 3683:
1.277 schwarze 3684: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
1.340 schwarze 3685: ROFF_REPARSE | ROFF_USERCALL : ROFF_IGN | ROFF_APPEND;
1.99 kristaps 3686: }
1.121 schwarze 3687:
1.306 schwarze 3688: /*
3689: * Calling a high-level macro that was renamed with .rn.
3690: * r->current_string has already been set up by roff_parse().
3691: */
1.340 schwarze 3692: static int
1.306 schwarze 3693: roff_renamed(ROFF_ARGS)
3694: {
3695: char *nbuf;
3696:
1.315 schwarze 3697: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
3698: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.306 schwarze 3699: free(buf->buf);
3700: buf->buf = nbuf;
1.329 schwarze 3701: *offs = 0;
1.306 schwarze 3702: return ROFF_CONT;
3703: }
3704:
1.212 schwarze 3705: static size_t
1.121 schwarze 3706: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3707: {
3708: char *name, *cp;
1.212 schwarze 3709: size_t namesz;
1.121 schwarze 3710:
3711: name = *cpp;
3712: if ('\0' == *name)
1.277 schwarze 3713: return 0;
1.121 schwarze 3714:
1.212 schwarze 3715: /* Read until end of name and terminate it with NUL. */
3716: for (cp = name; 1; cp++) {
3717: if ('\0' == *cp || ' ' == *cp) {
3718: namesz = cp - name;
3719: break;
3720: }
1.121 schwarze 3721: if ('\\' != *cp)
3722: continue;
1.215 schwarze 3723: namesz = cp - name;
3724: if ('{' == cp[1] || '}' == cp[1])
3725: break;
1.121 schwarze 3726: cp++;
3727: if ('\\' == *cp)
3728: continue;
1.350 ! schwarze 3729: mandoc_msg(MANDOCERR_NAMESC, ln, pos,
1.224 schwarze 3730: "%.*s", (int)(cp - name + 1), name);
1.212 schwarze 3731: mandoc_escape((const char **)&cp, NULL, NULL);
3732: break;
1.121 schwarze 3733: }
3734:
3735: /* Read past spaces. */
3736: while (' ' == *cp)
3737: cp++;
3738:
3739: *cpp = cp;
1.277 schwarze 3740: return namesz;
1.121 schwarze 3741: }
3742:
1.106 kristaps 3743: /*
3744: * Store *string into the user-defined string called *name.
3745: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.193 schwarze 3746: * append == 0: replace mode
3747: * append == 1: single-line append mode
3748: * append == 2: multiline append mode, append '\n' after each call
1.106 kristaps 3749: */
1.94 kristaps 3750: static void
1.106 kristaps 3751: roff_setstr(struct roff *r, const char *name, const char *string,
1.193 schwarze 3752: int append)
1.92 schwarze 3753: {
1.315 schwarze 3754: size_t namesz;
1.164 kristaps 3755:
1.315 schwarze 3756: namesz = strlen(name);
3757: roff_setstrn(&r->strtab, name, namesz, string,
1.207 schwarze 3758: string ? strlen(string) : 0, append);
1.315 schwarze 3759: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.164 kristaps 3760: }
3761:
3762: static void
1.166 kristaps 3763: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.193 schwarze 3764: const char *string, size_t stringsz, int append)
1.164 kristaps 3765: {
1.166 kristaps 3766: struct roffkv *n;
1.164 kristaps 3767: char *c;
3768: int i;
3769: size_t oldch, newch;
1.92 schwarze 3770:
1.106 kristaps 3771: /* Search for an existing string with the same name. */
1.164 kristaps 3772: n = *r;
3773:
1.211 schwarze 3774: while (n && (namesz != n->key.sz ||
3775: strncmp(n->key.p, name, namesz)))
1.92 schwarze 3776: n = n->next;
1.94 kristaps 3777:
3778: if (NULL == n) {
1.106 kristaps 3779: /* Create a new string table entry. */
1.166 kristaps 3780: n = mandoc_malloc(sizeof(struct roffkv));
3781: n->key.p = mandoc_strndup(name, namesz);
3782: n->key.sz = namesz;
3783: n->val.p = NULL;
3784: n->val.sz = 0;
1.164 kristaps 3785: n->next = *r;
3786: *r = n;
1.193 schwarze 3787: } else if (0 == append) {
1.166 kristaps 3788: free(n->val.p);
3789: n->val.p = NULL;
3790: n->val.sz = 0;
1.106 kristaps 3791: }
3792:
3793: if (NULL == string)
3794: return;
3795:
3796: /*
3797: * One additional byte for the '\n' in multiline mode,
3798: * and one for the terminating '\0'.
3799: */
1.193 schwarze 3800: newch = stringsz + (1 < append ? 2u : 1u);
1.164 kristaps 3801:
1.166 kristaps 3802: if (NULL == n->val.p) {
3803: n->val.p = mandoc_malloc(newch);
3804: *n->val.p = '\0';
1.106 kristaps 3805: oldch = 0;
3806: } else {
1.166 kristaps 3807: oldch = n->val.sz;
3808: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.106 kristaps 3809: }
3810:
3811: /* Skip existing content in the destination buffer. */
1.166 kristaps 3812: c = n->val.p + (int)oldch;
1.106 kristaps 3813:
3814: /* Append new content to the destination buffer. */
1.164 kristaps 3815: i = 0;
3816: while (i < (int)stringsz) {
1.106 kristaps 3817: /*
3818: * Rudimentary roff copy mode:
3819: * Handle escaped backslashes.
3820: */
1.164 kristaps 3821: if ('\\' == string[i] && '\\' == string[i + 1])
3822: i++;
3823: *c++ = string[i++];
1.106 kristaps 3824: }
1.94 kristaps 3825:
1.106 kristaps 3826: /* Append terminating bytes. */
1.193 schwarze 3827: if (1 < append)
1.106 kristaps 3828: *c++ = '\n';
1.163 kristaps 3829:
1.106 kristaps 3830: *c = '\0';
1.166 kristaps 3831: n->val.sz = (int)(c - n->val.p);
1.92 schwarze 3832: }
3833:
1.94 kristaps 3834: static const char *
1.325 schwarze 3835: roff_getstrn(struct roff *r, const char *name, size_t len,
1.315 schwarze 3836: int *deftype)
1.92 schwarze 3837: {
1.315 schwarze 3838: const struct roffkv *n;
1.325 schwarze 3839: int found, i;
1.315 schwarze 3840: enum roff_tok tok;
3841:
1.325 schwarze 3842: found = 0;
3843: for (n = r->strtab; n != NULL; n = n->next) {
3844: if (strncmp(name, n->key.p, len) != 0 ||
3845: n->key.p[len] != '\0' || n->val.p == NULL)
3846: continue;
3847: if (*deftype & ROFFDEF_USER) {
3848: *deftype = ROFFDEF_USER;
3849: return n->val.p;
3850: } else {
3851: found = 1;
3852: break;
3853: }
3854: }
3855: for (n = r->rentab; n != NULL; n = n->next) {
3856: if (strncmp(name, n->key.p, len) != 0 ||
3857: n->key.p[len] != '\0' || n->val.p == NULL)
3858: continue;
3859: if (*deftype & ROFFDEF_REN) {
3860: *deftype = ROFFDEF_REN;
3861: return n->val.p;
3862: } else {
3863: found = 1;
3864: break;
1.315 schwarze 3865: }
3866: }
1.325 schwarze 3867: for (i = 0; i < PREDEFS_MAX; i++) {
3868: if (strncmp(name, predefs[i].name, len) != 0 ||
3869: predefs[i].name[len] != '\0')
3870: continue;
3871: if (*deftype & ROFFDEF_PRE) {
3872: *deftype = ROFFDEF_PRE;
3873: return predefs[i].str;
3874: } else {
3875: found = 1;
3876: break;
1.315 schwarze 3877: }
3878: }
1.325 schwarze 3879: if (r->man->macroset != MACROSET_MAN) {
3880: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
3881: if (strncmp(name, roff_name[tok], len) != 0 ||
3882: roff_name[tok][len] != '\0')
3883: continue;
3884: if (*deftype & ROFFDEF_STD) {
3885: *deftype = ROFFDEF_STD;
3886: return NULL;
3887: } else {
3888: found = 1;
3889: break;
1.315 schwarze 3890: }
3891: }
3892: }
1.325 schwarze 3893: if (r->man->macroset != MACROSET_MDOC) {
3894: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
3895: if (strncmp(name, roff_name[tok], len) != 0 ||
3896: roff_name[tok][len] != '\0')
3897: continue;
3898: if (*deftype & ROFFDEF_STD) {
3899: *deftype = ROFFDEF_STD;
3900: return NULL;
3901: } else {
3902: found = 1;
3903: break;
1.315 schwarze 3904: }
3905: }
1.325 schwarze 3906: }
3907:
3908: if (found == 0 && *deftype != ROFFDEF_ANY) {
3909: if (*deftype & ROFFDEF_REN) {
3910: /*
3911: * This might still be a request,
3912: * so do not treat it as undefined yet.
3913: */
3914: *deftype = ROFFDEF_UNDEF;
3915: return NULL;
1.315 schwarze 3916: }
1.325 schwarze 3917:
3918: /* Using an undefined string defines it to be empty. */
3919:
3920: roff_setstrn(&r->strtab, name, len, "", 0, 0);
3921: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.315 schwarze 3922: }
1.325 schwarze 3923:
1.315 schwarze 3924: *deftype = 0;
1.277 schwarze 3925: return NULL;
1.92 schwarze 3926: }
3927:
1.94 kristaps 3928: static void
1.167 kristaps 3929: roff_freestr(struct roffkv *r)
1.92 schwarze 3930: {
1.166 kristaps 3931: struct roffkv *n, *nn;
1.92 schwarze 3932:
1.167 kristaps 3933: for (n = r; n; n = nn) {
1.166 kristaps 3934: free(n->key.p);
3935: free(n->val.p);
1.92 schwarze 3936: nn = n->next;
3937: free(n);
3938: }
1.114 kristaps 3939: }
1.266 schwarze 3940:
3941: /* --- accessors and utility functions ------------------------------------ */
1.164 kristaps 3942:
3943: /*
3944: * Duplicate an input string, making the appropriate character
3945: * conversations (as stipulated by `tr') along the way.
3946: * Returns a heap-allocated string with all the replacements made.
3947: */
3948: char *
3949: roff_strdup(const struct roff *r, const char *p)
3950: {
1.166 kristaps 3951: const struct roffkv *cp;
1.164 kristaps 3952: char *res;
3953: const char *pp;
3954: size_t ssz, sz;
3955: enum mandoc_esc esc;
3956:
1.167 kristaps 3957: if (NULL == r->xmbtab && NULL == r->xtab)
1.277 schwarze 3958: return mandoc_strdup(p);
1.164 kristaps 3959: else if ('\0' == *p)
1.277 schwarze 3960: return mandoc_strdup("");
1.164 kristaps 3961:
3962: /*
3963: * Step through each character looking for term matches
3964: * (remember that a `tr' can be invoked with an escape, which is
3965: * a glyph but the escape is multi-character).
3966: * We only do this if the character hash has been initialised
3967: * and the string is >0 length.
3968: */
3969:
3970: res = NULL;
3971: ssz = 0;
3972:
3973: while ('\0' != *p) {
1.289 schwarze 3974: assert((unsigned int)*p < 128);
3975: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.167 kristaps 3976: sz = r->xtab[(int)*p].sz;
3977: res = mandoc_realloc(res, ssz + sz + 1);
3978: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3979: ssz += sz;
3980: p++;
3981: continue;
3982: } else if ('\\' != *p) {
3983: res = mandoc_realloc(res, ssz + 2);
3984: res[ssz++] = *p++;
3985: continue;
3986: }
3987:
1.164 kristaps 3988: /* Search for term matches. */
1.167 kristaps 3989: for (cp = r->xmbtab; cp; cp = cp->next)
1.166 kristaps 3990: if (0 == strncmp(p, cp->key.p, cp->key.sz))
1.164 kristaps 3991: break;
3992:
3993: if (NULL != cp) {
3994: /*
3995: * A match has been found.
3996: * Append the match to the array and move
3997: * forward by its keysize.
3998: */
1.207 schwarze 3999: res = mandoc_realloc(res,
4000: ssz + cp->val.sz + 1);
1.166 kristaps 4001: memcpy(res + ssz, cp->val.p, cp->val.sz);
4002: ssz += cp->val.sz;
4003: p += (int)cp->key.sz;
1.164 kristaps 4004: continue;
4005: }
4006:
1.167 kristaps 4007: /*
4008: * Handle escapes carefully: we need to copy
4009: * over just the escape itself, or else we might
4010: * do replacements within the escape itself.
4011: * Make sure to pass along the bogus string.
4012: */
4013: pp = p++;
4014: esc = mandoc_escape(&p, NULL, NULL);
4015: if (ESCAPE_ERROR == esc) {
4016: sz = strlen(pp);
1.164 kristaps 4017: res = mandoc_realloc(res, ssz + sz + 1);
4018: memcpy(res + ssz, pp, sz);
1.167 kristaps 4019: break;
1.164 kristaps 4020: }
1.207 schwarze 4021: /*
4022: * We bail out on bad escapes.
1.167 kristaps 4023: * No need to warn: we already did so when
4024: * roff_res() was called.
4025: */
4026: sz = (int)(p - pp);
4027: res = mandoc_realloc(res, ssz + sz + 1);
4028: memcpy(res + ssz, pp, sz);
4029: ssz += sz;
1.164 kristaps 4030: }
4031:
4032: res[(int)ssz] = '\0';
1.277 schwarze 4033: return res;
1.227 schwarze 4034: }
4035:
4036: int
4037: roff_getformat(const struct roff *r)
4038: {
4039:
1.277 schwarze 4040: return r->format;
1.174 kristaps 4041: }
4042:
4043: /*
1.207 schwarze 4044: * Find out whether a line is a macro line or not.
1.174 kristaps 4045: * If it is, adjust the current position and return one; if it isn't,
4046: * return zero and don't change the current position.
4047: * If the control character has been set with `.cc', then let that grain
4048: * precedence.
4049: * This is slighly contrary to groff, where using the non-breaking
4050: * control character when `cc' has been invoked will cause the
4051: * non-breaking macro contents to be printed verbatim.
4052: */
4053: int
4054: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
4055: {
4056: int pos;
4057:
4058: pos = *ppos;
4059:
1.303 schwarze 4060: if (r->control != '\0' && cp[pos] == r->control)
1.174 kristaps 4061: pos++;
1.303 schwarze 4062: else if (r->control != '\0')
1.277 schwarze 4063: return 0;
1.174 kristaps 4064: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
4065: pos += 2;
4066: else if ('.' == cp[pos] || '\'' == cp[pos])
4067: pos++;
4068: else
1.277 schwarze 4069: return 0;
1.174 kristaps 4070:
4071: while (' ' == cp[pos] || '\t' == cp[pos])
4072: pos++;
4073:
4074: *ppos = pos;
1.277 schwarze 4075: return 1;
1.74 kristaps 4076: }
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