Annotation of mandoc/roff.c, Revision 1.352
1.352 ! schwarze 1: /* $Id: roff.c,v 1.351 2018/12/14 06:33:14 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 {
1.296 schwarze 101: struct roff_man *man; /* mdoc or man parser */
1.67 kristaps 102: struct roffnode *last; /* leaf of stack */
1.339 schwarze 103: struct mctx *mstack; /* stack of macro contexts */
1.223 schwarze 104: int *rstack; /* stack of inverted `ie' values */
1.295 schwarze 105: struct ohash *reqtab; /* request lookup table */
1.180 schwarze 106: struct roffreg *regtab; /* number registers */
1.166 kristaps 107: struct roffkv *strtab; /* user-defined strings & macros */
1.306 schwarze 108: struct roffkv *rentab; /* renamed strings & macros */
1.167 kristaps 109: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
110: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.106 kristaps 111: const char *current_string; /* value of last called user macro */
1.118 kristaps 112: struct tbl_node *first_tbl; /* first table parsed */
113: struct tbl_node *last_tbl; /* last table parsed */
114: struct tbl_node *tbl; /* current table being parsed */
1.319 schwarze 115: struct eqn_node *last_eqn; /* equation parser */
116: struct eqn_node *eqn; /* active equation parser */
1.230 schwarze 117: int eqn_inline; /* current equation is inline */
1.223 schwarze 118: int options; /* parse options */
1.339 schwarze 119: int mstacksz; /* current size of mstack */
120: int mstackpos; /* position in mstack */
1.223 schwarze 121: int rstacksz; /* current size limit of rstack */
122: int rstackpos; /* position in rstack */
1.227 schwarze 123: int format; /* current file in mdoc or man format */
1.223 schwarze 124: char control; /* control character */
1.303 schwarze 125: char escape; /* escape character */
1.79 kristaps 126: };
127:
1.67 kristaps 128: struct roffnode {
1.294 schwarze 129: enum roff_tok tok; /* type of node */
1.67 kristaps 130: struct roffnode *parent; /* up one in stack */
131: int line; /* parse line */
132: int col; /* parse col */
1.106 kristaps 133: char *name; /* node name, e.g. macro name */
1.79 kristaps 134: char *end; /* end-rules: custom token */
135: int endspan; /* end-rules: next-line or infty */
1.198 schwarze 136: int rule; /* current evaluation rule */
1.67 kristaps 137: };
138:
139: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.294 schwarze 140: enum roff_tok tok, /* tok of macro */ \
1.238 schwarze 141: struct buf *buf, /* input buffer */ \
1.67 kristaps 142: int ln, /* parse line */ \
1.75 kristaps 143: int ppos, /* original pos in buffer */ \
144: int pos, /* current pos in buffer */ \
1.74 kristaps 145: int *offs /* reset offset of buffer data */
1.67 kristaps 146:
1.340 schwarze 147: typedef int (*roffproc)(ROFF_ARGS);
1.67 kristaps 148:
149: struct roffmac {
1.79 kristaps 150: roffproc proc; /* process new macro */
151: roffproc text; /* process as child text of macro */
152: roffproc sub; /* process as child of macro */
153: int flags;
154: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.67 kristaps 155: };
156:
1.141 kristaps 157: struct predef {
158: const char *name; /* predefined input name */
159: const char *str; /* replacement symbol */
160: };
161:
162: #define PREDEF(__name, __str) \
163: { (__name), (__str) },
164:
1.266 schwarze 165: /* --- function prototypes ------------------------------------------------ */
166:
1.340 schwarze 167: static int roffnode_cleanscope(struct roff *);
168: static int roffnode_pop(struct roff *);
1.294 schwarze 169: static void roffnode_push(struct roff *, enum roff_tok,
1.155 kristaps 170: const char *, int, int);
1.346 schwarze 171: static void roff_addtbl(struct roff_man *, int, struct tbl_node *);
1.340 schwarze 172: static int roff_als(ROFF_ARGS);
173: static int roff_block(ROFF_ARGS);
174: static int roff_block_text(ROFF_ARGS);
175: static int roff_block_sub(ROFF_ARGS);
176: static int roff_br(ROFF_ARGS);
177: static int roff_cblock(ROFF_ARGS);
178: static int roff_cc(ROFF_ARGS);
179: static int roff_ccond(struct roff *, int, int);
1.341 schwarze 180: static int roff_char(ROFF_ARGS);
1.340 schwarze 181: static int roff_cond(ROFF_ARGS);
182: static int roff_cond_text(ROFF_ARGS);
183: static int roff_cond_sub(ROFF_ARGS);
184: static int roff_ds(ROFF_ARGS);
185: static int roff_ec(ROFF_ARGS);
186: static int roff_eo(ROFF_ARGS);
187: static int roff_eqndelim(struct roff *, struct buf *, int);
1.271 schwarze 188: static int roff_evalcond(struct roff *r, int, char *, int *);
1.234 kristaps 189: static int roff_evalnum(struct roff *, int,
190: const char *, int *, int *, int);
191: static int roff_evalpar(struct roff *, int,
1.261 schwarze 192: const char *, int *, int *, int);
1.198 schwarze 193: static int roff_evalstrcond(const char *, int *);
1.155 kristaps 194: static void roff_free1(struct roff *);
1.180 schwarze 195: static void roff_freereg(struct roffreg *);
1.167 kristaps 196: static void roff_freestr(struct roffkv *);
1.212 schwarze 197: static size_t roff_getname(struct roff *, char **, int, int);
1.261 schwarze 198: static int roff_getnum(const char *, int *, int *, int);
1.184 schwarze 199: static int roff_getop(const char *, int *, char *);
1.327 schwarze 200: static int roff_getregn(struct roff *,
201: const char *, size_t, char);
1.273 schwarze 202: static int roff_getregro(const struct roff *,
203: const char *name);
1.325 schwarze 204: static const char *roff_getstrn(struct roff *,
1.315 schwarze 205: const char *, size_t, int *);
1.271 schwarze 206: static int roff_hasregn(const struct roff *,
207: const char *, size_t);
1.340 schwarze 208: static int roff_insec(ROFF_ARGS);
209: static int roff_it(ROFF_ARGS);
210: static int roff_line_ignore(ROFF_ARGS);
1.265 schwarze 211: static void roff_man_alloc1(struct roff_man *);
212: static void roff_man_free1(struct roff_man *);
1.340 schwarze 213: static int roff_manyarg(ROFF_ARGS);
214: static int roff_nop(ROFF_ARGS);
215: static int roff_nr(ROFF_ARGS);
216: static int roff_onearg(ROFF_ARGS);
1.294 schwarze 217: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.214 schwarze 218: int, int);
1.340 schwarze 219: static int roff_parsetext(struct roff *, struct buf *,
1.305 schwarze 220: int, int *);
1.340 schwarze 221: static int roff_renamed(ROFF_ARGS);
222: static int roff_res(struct roff *, struct buf *, int, int);
223: static int roff_return(ROFF_ARGS);
224: static int roff_rm(ROFF_ARGS);
225: static int roff_rn(ROFF_ARGS);
226: static int roff_rr(ROFF_ARGS);
1.326 schwarze 227: static void roff_setregn(struct roff *, const char *,
1.327 schwarze 228: size_t, int, char, int);
1.94 kristaps 229: static void roff_setstr(struct roff *,
1.106 kristaps 230: const char *, const char *, int);
1.207 schwarze 231: static void roff_setstrn(struct roffkv **, const char *,
1.164 kristaps 232: size_t, const char *, size_t, int);
1.340 schwarze 233: static int roff_shift(ROFF_ARGS);
234: static int roff_so(ROFF_ARGS);
235: static int roff_tr(ROFF_ARGS);
236: static int roff_Dd(ROFF_ARGS);
237: static int roff_TE(ROFF_ARGS);
238: static int roff_TS(ROFF_ARGS);
239: static int roff_EQ(ROFF_ARGS);
240: static int roff_EN(ROFF_ARGS);
241: static int roff_T_(ROFF_ARGS);
242: static int roff_unsupp(ROFF_ARGS);
243: static int roff_userdef(ROFF_ARGS);
1.67 kristaps 244:
1.266 schwarze 245: /* --- constant data ------------------------------------------------------ */
246:
1.261 schwarze 247: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
248: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
249:
1.294 schwarze 250: const char *__roff_name[MAN_MAX + 1] = {
1.305 schwarze 251: "br", "ce", "ft", "ll",
1.312 schwarze 252: "mc", "po", "rj", "sp",
253: "ta", "ti", NULL,
1.294 schwarze 254: "ab", "ad", "af", "aln",
255: "als", "am", "am1", "ami",
256: "ami1", "as", "as1", "asciify",
257: "backtrace", "bd", "bleedat", "blm",
258: "box", "boxa", "bp", "BP",
259: "break", "breakchar", "brnl", "brp",
1.305 schwarze 260: "brpnl", "c2", "cc",
1.294 schwarze 261: "cf", "cflags", "ch", "char",
262: "chop", "class", "close", "CL",
263: "color", "composite", "continue", "cp",
264: "cropat", "cs", "cu", "da",
265: "dch", "Dd", "de", "de1",
266: "defcolor", "dei", "dei1", "device",
267: "devicem", "di", "do", "ds",
268: "ds1", "dwh", "dt", "ec",
269: "ecr", "ecs", "el", "em",
270: "EN", "eo", "EP", "EQ",
271: "errprint", "ev", "evc", "ex",
272: "fallback", "fam", "fc", "fchar",
273: "fcolor", "fdeferlig", "feature", "fkern",
274: "fl", "flig", "fp", "fps",
275: "fschar", "fspacewidth", "fspecial", "ftr",
276: "fzoom", "gcolor", "hc", "hcode",
277: "hidechar", "hla", "hlm", "hpf",
278: "hpfa", "hpfcode", "hw", "hy",
279: "hylang", "hylen", "hym", "hypp",
280: "hys", "ie", "if", "ig",
281: "index", "it", "itc", "IX",
282: "kern", "kernafter", "kernbefore", "kernpair",
283: "lc", "lc_ctype", "lds", "length",
284: "letadj", "lf", "lg", "lhang",
285: "linetabs", "lnr", "lnrf", "lpfx",
1.304 schwarze 286: "ls", "lsm", "lt",
1.294 schwarze 287: "mediasize", "minss", "mk", "mso",
288: "na", "ne", "nh", "nhychar",
289: "nm", "nn", "nop", "nr",
290: "nrf", "nroff", "ns", "nx",
291: "open", "opena", "os", "output",
292: "padj", "papersize", "pc", "pev",
293: "pi", "PI", "pl", "pm",
1.312 schwarze 294: "pn", "pnr", "ps",
1.294 schwarze 295: "psbb", "pshape", "pso", "ptr",
296: "pvs", "rchar", "rd", "recursionlimit",
1.309 schwarze 297: "return", "rfschar", "rhang",
1.294 schwarze 298: "rm", "rn", "rnn", "rr",
299: "rs", "rt", "schar", "sentchar",
300: "shc", "shift", "sizes", "so",
301: "spacewidth", "special", "spreadwarn", "ss",
302: "sty", "substring", "sv", "sy",
1.300 schwarze 303: "T&", "tc", "TE",
1.301 schwarze 304: "TH", "tkf", "tl",
1.294 schwarze 305: "tm", "tm1", "tmc", "tr",
306: "track", "transchar", "trf", "trimat",
307: "trin", "trnt", "troff", "TS",
308: "uf", "ul", "unformat", "unwatch",
309: "unwatchn", "vpt", "vs", "warn",
310: "warnscale", "watch", "watchlength", "watchn",
311: "wh", "while", "write", "writec",
312: "writem", "xflag", ".", NULL,
1.306 schwarze 313: NULL, "text",
1.294 schwarze 314: "Dd", "Dt", "Os", "Sh",
315: "Ss", "Pp", "D1", "Dl",
316: "Bd", "Ed", "Bl", "El",
317: "It", "Ad", "An", "Ap",
318: "Ar", "Cd", "Cm", "Dv",
319: "Er", "Ev", "Ex", "Fa",
320: "Fd", "Fl", "Fn", "Ft",
321: "Ic", "In", "Li", "Nd",
322: "Nm", "Op", "Ot", "Pa",
323: "Rv", "St", "Va", "Vt",
324: "Xr", "%A", "%B", "%D",
325: "%I", "%J", "%N", "%O",
326: "%P", "%R", "%T", "%V",
327: "Ac", "Ao", "Aq", "At",
328: "Bc", "Bf", "Bo", "Bq",
329: "Bsx", "Bx", "Db", "Dc",
330: "Do", "Dq", "Ec", "Ef",
331: "Em", "Eo", "Fx", "Ms",
332: "No", "Ns", "Nx", "Ox",
333: "Pc", "Pf", "Po", "Pq",
334: "Qc", "Ql", "Qo", "Qq",
335: "Re", "Rs", "Sc", "So",
336: "Sq", "Sm", "Sx", "Sy",
337: "Tn", "Ux", "Xc", "Xo",
338: "Fo", "Fc", "Oo", "Oc",
339: "Bk", "Ek", "Bt", "Hf",
340: "Fr", "Ud", "Lb", "Lp",
341: "Lk", "Mt", "Brq", "Bro",
342: "Brc", "%C", "Es", "En",
1.299 schwarze 343: "Dx", "%Q", "%U", "Ta",
344: NULL,
1.294 schwarze 345: "TH", "SH", "SS", "TP",
1.332 schwarze 346: "TQ",
1.294 schwarze 347: "LP", "PP", "P", "IP",
348: "HP", "SM", "SB", "BI",
349: "IB", "BR", "RB", "R",
350: "B", "I", "IR", "RI",
1.299 schwarze 351: "nf", "fi",
1.294 schwarze 352: "RE", "RS", "DT", "UC",
1.297 schwarze 353: "PD", "AT", "in",
1.333 schwarze 354: "SY", "YS", "OP",
355: "EX", "EE", "UR",
1.317 schwarze 356: "UE", "MT", "ME", NULL
1.294 schwarze 357: };
358: const char *const *roff_name = __roff_name;
359:
360: static struct roffmac roffs[TOKEN_NONE] = {
1.296 schwarze 361: { roff_br, NULL, NULL, 0 }, /* br */
1.305 schwarze 362: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.297 schwarze 363: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.298 schwarze 364: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.304 schwarze 365: { roff_onearg, NULL, NULL, 0 }, /* mc */
1.312 schwarze 366: { roff_onearg, NULL, NULL, 0 }, /* po */
1.309 schwarze 367: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.299 schwarze 368: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.300 schwarze 369: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.301 schwarze 370: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.296 schwarze 371: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.295 schwarze 372: { roff_unsupp, NULL, NULL, 0 }, /* ab */
373: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
374: { roff_line_ignore, NULL, NULL, 0 }, /* af */
375: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.311 schwarze 376: { roff_als, NULL, NULL, 0 }, /* als */
1.295 schwarze 377: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
378: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
379: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
380: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
381: { roff_ds, NULL, NULL, 0 }, /* as */
382: { roff_ds, NULL, NULL, 0 }, /* as1 */
383: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
384: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
385: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
386: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
387: { roff_unsupp, NULL, NULL, 0 }, /* blm */
388: { roff_unsupp, NULL, NULL, 0 }, /* box */
389: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
390: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
391: { roff_unsupp, NULL, NULL, 0 }, /* BP */
392: { roff_unsupp, NULL, NULL, 0 }, /* break */
393: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
394: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.296 schwarze 395: { roff_br, NULL, NULL, 0 }, /* brp */
1.295 schwarze 396: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
397: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
398: { roff_cc, NULL, NULL, 0 }, /* cc */
399: { roff_insec, NULL, NULL, 0 }, /* cf */
400: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
401: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
1.341 schwarze 402: { roff_char, NULL, NULL, 0 }, /* char */
1.295 schwarze 403: { roff_unsupp, NULL, NULL, 0 }, /* chop */
404: { roff_line_ignore, NULL, NULL, 0 }, /* class */
405: { roff_insec, NULL, NULL, 0 }, /* close */
406: { roff_unsupp, NULL, NULL, 0 }, /* CL */
407: { roff_line_ignore, NULL, NULL, 0 }, /* color */
408: { roff_unsupp, NULL, NULL, 0 }, /* composite */
409: { roff_unsupp, NULL, NULL, 0 }, /* continue */
410: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
411: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
412: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
413: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
414: { roff_unsupp, NULL, NULL, 0 }, /* da */
415: { roff_unsupp, NULL, NULL, 0 }, /* dch */
416: { roff_Dd, NULL, NULL, 0 }, /* Dd */
417: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
418: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
419: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
420: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
421: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
422: { roff_unsupp, NULL, NULL, 0 }, /* device */
423: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
424: { roff_unsupp, NULL, NULL, 0 }, /* di */
425: { roff_unsupp, NULL, NULL, 0 }, /* do */
426: { roff_ds, NULL, NULL, 0 }, /* ds */
427: { roff_ds, NULL, NULL, 0 }, /* ds1 */
428: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
429: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.303 schwarze 430: { roff_ec, NULL, NULL, 0 }, /* ec */
1.295 schwarze 431: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
432: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
433: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
434: { roff_unsupp, NULL, NULL, 0 }, /* em */
435: { roff_EN, NULL, NULL, 0 }, /* EN */
1.303 schwarze 436: { roff_eo, NULL, NULL, 0 }, /* eo */
1.295 schwarze 437: { roff_unsupp, NULL, NULL, 0 }, /* EP */
438: { roff_EQ, NULL, NULL, 0 }, /* EQ */
439: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
440: { roff_unsupp, NULL, NULL, 0 }, /* ev */
441: { roff_unsupp, NULL, NULL, 0 }, /* evc */
442: { roff_unsupp, NULL, NULL, 0 }, /* ex */
443: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
444: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
445: { roff_unsupp, NULL, NULL, 0 }, /* fc */
446: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
447: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
448: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
449: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
450: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
451: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
452: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
453: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
454: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
455: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
456: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
457: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
458: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
459: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
460: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
461: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
462: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
463: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
464: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
465: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
466: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
467: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
468: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
469: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
470: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
471: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
472: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
473: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
474: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
475: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
476: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
477: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
478: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
479: { roff_unsupp, NULL, NULL, 0 }, /* index */
480: { roff_it, NULL, NULL, 0 }, /* it */
481: { roff_unsupp, NULL, NULL, 0 }, /* itc */
482: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
483: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
484: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
485: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
486: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
487: { roff_unsupp, NULL, NULL, 0 }, /* lc */
488: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
489: { roff_unsupp, NULL, NULL, 0 }, /* lds */
490: { roff_unsupp, NULL, NULL, 0 }, /* length */
491: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
492: { roff_insec, NULL, NULL, 0 }, /* lf */
493: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
494: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
495: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
496: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
497: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
498: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
499: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
500: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
501: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
502: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
503: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
504: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
505: { roff_insec, NULL, NULL, 0 }, /* mso */
506: { roff_line_ignore, NULL, NULL, 0 }, /* na */
507: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
508: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
509: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
510: { roff_unsupp, NULL, NULL, 0 }, /* nm */
511: { roff_unsupp, NULL, NULL, 0 }, /* nn */
1.330 schwarze 512: { roff_nop, NULL, NULL, 0 }, /* nop */
1.295 schwarze 513: { roff_nr, NULL, NULL, 0 }, /* nr */
514: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
515: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
516: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
517: { roff_insec, NULL, NULL, 0 }, /* nx */
518: { roff_insec, NULL, NULL, 0 }, /* open */
519: { roff_insec, NULL, NULL, 0 }, /* opena */
520: { roff_line_ignore, NULL, NULL, 0 }, /* os */
521: { roff_unsupp, NULL, NULL, 0 }, /* output */
522: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
523: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
524: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
525: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
526: { roff_insec, NULL, NULL, 0 }, /* pi */
527: { roff_unsupp, NULL, NULL, 0 }, /* PI */
528: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
529: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
530: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
531: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
532: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
533: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
534: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
535: { roff_insec, NULL, NULL, 0 }, /* pso */
536: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
537: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
538: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
539: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
540: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
1.339 schwarze 541: { roff_return, NULL, NULL, 0 }, /* return */
1.295 schwarze 542: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
543: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
544: { roff_rm, NULL, NULL, 0 }, /* rm */
1.306 schwarze 545: { roff_rn, NULL, NULL, 0 }, /* rn */
1.295 schwarze 546: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
547: { roff_rr, NULL, NULL, 0 }, /* rr */
548: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
549: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
550: { roff_unsupp, NULL, NULL, 0 }, /* schar */
551: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
552: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
1.339 schwarze 553: { roff_shift, NULL, NULL, 0 }, /* shift */
1.295 schwarze 554: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
555: { roff_so, NULL, NULL, 0 }, /* so */
556: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
557: { roff_line_ignore, NULL, NULL, 0 }, /* special */
558: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
559: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
560: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
561: { roff_unsupp, NULL, NULL, 0 }, /* substring */
562: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
563: { roff_insec, NULL, NULL, 0 }, /* sy */
564: { roff_T_, NULL, NULL, 0 }, /* T& */
565: { roff_unsupp, NULL, NULL, 0 }, /* tc */
566: { roff_TE, NULL, NULL, 0 }, /* TE */
1.315 schwarze 567: { roff_Dd, NULL, NULL, 0 }, /* TH */
1.295 schwarze 568: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
569: { roff_unsupp, NULL, NULL, 0 }, /* tl */
570: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
571: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
572: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
573: { roff_tr, NULL, NULL, 0 }, /* tr */
574: { roff_line_ignore, NULL, NULL, 0 }, /* track */
575: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
576: { roff_insec, NULL, NULL, 0 }, /* trf */
577: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
578: { roff_unsupp, NULL, NULL, 0 }, /* trin */
579: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
580: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
581: { roff_TS, NULL, NULL, 0 }, /* TS */
582: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
583: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
584: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
585: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
586: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
587: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
588: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
589: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
590: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
591: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
592: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
593: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
594: { roff_unsupp, NULL, NULL, 0 }, /* wh */
1.340 schwarze 595: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /*while*/
1.295 schwarze 596: { roff_insec, NULL, NULL, 0 }, /* write */
597: { roff_insec, NULL, NULL, 0 }, /* writec */
598: { roff_insec, NULL, NULL, 0 }, /* writem */
599: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
600: { roff_cblock, NULL, NULL, 0 }, /* . */
1.306 schwarze 601: { roff_renamed, NULL, NULL, 0 },
1.295 schwarze 602: { roff_userdef, NULL, NULL, 0 }
1.67 kristaps 603: };
604:
1.141 kristaps 605: /* Array of injected predefined strings. */
606: #define PREDEFS_MAX 38
607: static const struct predef predefs[PREDEFS_MAX] = {
608: #include "predefs.in"
609: };
610:
1.305 schwarze 611: static int roffce_lines; /* number of input lines to center */
612: static struct roff_node *roffce_node; /* active request */
1.178 schwarze 613: static int roffit_lines; /* number of lines to delay */
614: static char *roffit_macro; /* nil-terminated macro line */
615:
1.207 schwarze 616:
1.266 schwarze 617: /* --- request table ------------------------------------------------------ */
618:
1.295 schwarze 619: struct ohash *
620: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.85 kristaps 621: {
1.295 schwarze 622: struct ohash *htab;
623: struct roffreq *req;
624: enum roff_tok tok;
625: size_t sz;
626: unsigned int slot;
1.85 kristaps 627:
1.295 schwarze 628: htab = mandoc_malloc(sizeof(*htab));
629: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.85 kristaps 630:
1.295 schwarze 631: for (tok = mintok; tok < maxtok; tok++) {
1.296 schwarze 632: if (roff_name[tok] == NULL)
633: continue;
1.295 schwarze 634: sz = strlen(roff_name[tok]);
635: req = mandoc_malloc(sizeof(*req) + sz + 1);
636: req->tok = tok;
637: memcpy(req->name, roff_name[tok], sz + 1);
638: slot = ohash_qlookup(htab, req->name);
639: ohash_insert(htab, slot, req);
1.85 kristaps 640: }
1.295 schwarze 641: return htab;
1.85 kristaps 642: }
643:
1.295 schwarze 644: void
645: roffhash_free(struct ohash *htab)
1.67 kristaps 646: {
1.295 schwarze 647: struct roffreq *req;
648: unsigned int slot;
1.67 kristaps 649:
1.295 schwarze 650: if (htab == NULL)
651: return;
652: for (req = ohash_first(htab, &slot); req != NULL;
653: req = ohash_next(htab, &slot))
654: free(req);
655: ohash_delete(htab);
656: free(htab);
657: }
658:
659: enum roff_tok
660: roffhash_find(struct ohash *htab, const char *name, size_t sz)
661: {
662: struct roffreq *req;
663: const char *end;
664:
665: if (sz) {
666: end = name + sz;
667: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
668: } else
669: req = ohash_find(htab, ohash_qlookup(htab, name));
670: return req == NULL ? TOKEN_NONE : req->tok;
1.67 kristaps 671: }
672:
1.266 schwarze 673: /* --- stack of request blocks -------------------------------------------- */
674:
1.67 kristaps 675: /*
676: * Pop the current node off of the stack of roff instructions currently
677: * pending.
678: */
1.340 schwarze 679: static int
1.67 kristaps 680: roffnode_pop(struct roff *r)
681: {
682: struct roffnode *p;
1.340 schwarze 683: int inloop;
1.67 kristaps 684:
1.207 schwarze 685: p = r->last;
1.340 schwarze 686: inloop = p->tok == ROFF_while;
687: r->last = p->parent;
1.106 kristaps 688: free(p->name);
689: free(p->end);
1.67 kristaps 690: free(p);
1.340 schwarze 691: return inloop;
1.67 kristaps 692: }
693:
694: /*
695: * Push a roff node onto the instruction stack. This must later be
696: * removed with roffnode_pop().
697: */
1.98 schwarze 698: static void
1.294 schwarze 699: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.106 kristaps 700: int line, int col)
1.67 kristaps 701: {
702: struct roffnode *p;
703:
1.98 schwarze 704: p = mandoc_calloc(1, sizeof(struct roffnode));
1.67 kristaps 705: p->tok = tok;
1.106 kristaps 706: if (name)
707: p->name = mandoc_strdup(name);
1.67 kristaps 708: p->parent = r->last;
709: p->line = line;
710: p->col = col;
1.198 schwarze 711: p->rule = p->parent ? p->parent->rule : 0;
1.67 kristaps 712:
713: r->last = p;
714: }
715:
1.266 schwarze 716: /* --- roff parser state data management ---------------------------------- */
717:
1.67 kristaps 718: static void
719: roff_free1(struct roff *r)
720: {
1.167 kristaps 721: int i;
1.67 kristaps 722:
1.346 schwarze 723: tbl_free(r->first_tbl);
1.113 kristaps 724: r->first_tbl = r->last_tbl = r->tbl = NULL;
725:
1.347 schwarze 726: eqn_free(r->last_eqn);
1.319 schwarze 727: r->last_eqn = r->eqn = NULL;
1.125 kristaps 728:
1.339 schwarze 729: while (r->mstackpos >= 0)
730: roff_userret(r);
731:
1.67 kristaps 732: while (r->last)
733: roffnode_pop(r);
1.109 kristaps 734:
1.223 schwarze 735: free (r->rstack);
736: r->rstack = NULL;
737: r->rstacksz = 0;
738: r->rstackpos = -1;
739:
740: roff_freereg(r->regtab);
741: r->regtab = NULL;
742:
1.167 kristaps 743: roff_freestr(r->strtab);
1.306 schwarze 744: roff_freestr(r->rentab);
1.167 kristaps 745: roff_freestr(r->xmbtab);
1.306 schwarze 746: r->strtab = r->rentab = r->xmbtab = NULL;
1.167 kristaps 747:
748: if (r->xtab)
749: for (i = 0; i < 128; i++)
750: free(r->xtab[i].p);
751: free(r->xtab);
752: r->xtab = NULL;
1.67 kristaps 753: }
754:
755: void
756: roff_reset(struct roff *r)
757: {
758: roff_free1(r);
1.227 schwarze 759: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.303 schwarze 760: r->control = '\0';
761: r->escape = '\\';
1.307 schwarze 762: roffce_lines = 0;
763: roffce_node = NULL;
764: roffit_lines = 0;
765: roffit_macro = NULL;
1.67 kristaps 766: }
767:
768: void
769: roff_free(struct roff *r)
770: {
1.339 schwarze 771: int i;
772:
1.67 kristaps 773: roff_free1(r);
1.339 schwarze 774: for (i = 0; i < r->mstacksz; i++)
775: free(r->mstack[i].argv);
776: free(r->mstack);
1.295 schwarze 777: roffhash_free(r->reqtab);
1.67 kristaps 778: free(r);
779: }
780:
781: struct roff *
1.351 schwarze 782: roff_alloc(int options)
1.67 kristaps 783: {
784: struct roff *r;
785:
1.98 schwarze 786: r = mandoc_calloc(1, sizeof(struct roff));
1.328 schwarze 787: r->reqtab = roffhash_alloc(0, ROFF_RENAMED);
1.199 schwarze 788: r->options = options;
1.227 schwarze 789: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.339 schwarze 790: r->mstackpos = -1;
1.82 kristaps 791: r->rstackpos = -1;
1.303 schwarze 792: r->escape = '\\';
1.277 schwarze 793: return r;
1.265 schwarze 794: }
795:
1.266 schwarze 796: /* --- syntax tree state data management ---------------------------------- */
797:
1.265 schwarze 798: static void
799: roff_man_free1(struct roff_man *man)
800: {
801:
1.266 schwarze 802: if (man->first != NULL)
803: roff_node_delete(man, man->first);
1.265 schwarze 804: free(man->meta.msec);
805: free(man->meta.vol);
806: free(man->meta.os);
807: free(man->meta.arch);
808: free(man->meta.title);
809: free(man->meta.name);
810: free(man->meta.date);
811: }
812:
813: static void
814: roff_man_alloc1(struct roff_man *man)
815: {
816:
817: memset(&man->meta, 0, sizeof(man->meta));
818: man->first = mandoc_calloc(1, sizeof(*man->first));
819: man->first->type = ROFFT_ROOT;
820: man->last = man->first;
821: man->last_es = NULL;
822: man->flags = 0;
823: man->macroset = MACROSET_NONE;
824: man->lastsec = man->lastnamed = SEC_NONE;
825: man->next = ROFF_NEXT_CHILD;
826: }
827:
828: void
829: roff_man_reset(struct roff_man *man)
830: {
831:
832: roff_man_free1(man);
833: roff_man_alloc1(man);
834: }
835:
836: void
837: roff_man_free(struct roff_man *man)
838: {
839:
840: roff_man_free1(man);
841: free(man);
842: }
843:
844: struct roff_man *
1.351 schwarze 845: roff_man_alloc(struct roff *roff, const char *os_s, int quick)
1.265 schwarze 846: {
847: struct roff_man *man;
848:
849: man = mandoc_calloc(1, sizeof(*man));
850: man->roff = roff;
1.316 schwarze 851: man->os_s = os_s;
1.265 schwarze 852: man->quick = quick;
853: roff_man_alloc1(man);
1.296 schwarze 854: roff->man = man;
1.277 schwarze 855: return man;
1.67 kristaps 856: }
857:
1.266 schwarze 858: /* --- syntax tree handling ----------------------------------------------- */
859:
860: struct roff_node *
861: roff_node_alloc(struct roff_man *man, int line, int pos,
862: enum roff_type type, int tok)
863: {
864: struct roff_node *n;
865:
866: n = mandoc_calloc(1, sizeof(*n));
867: n->line = line;
868: n->pos = pos;
869: n->tok = tok;
870: n->type = type;
871: n->sec = man->lastsec;
872:
873: if (man->flags & MDOC_SYNOPSIS)
1.285 schwarze 874: n->flags |= NODE_SYNPRETTY;
1.266 schwarze 875: else
1.285 schwarze 876: n->flags &= ~NODE_SYNPRETTY;
1.266 schwarze 877: if (man->flags & MDOC_NEWLINE)
1.285 schwarze 878: n->flags |= NODE_LINE;
1.266 schwarze 879: man->flags &= ~MDOC_NEWLINE;
880:
1.277 schwarze 881: return n;
1.266 schwarze 882: }
883:
884: void
885: roff_node_append(struct roff_man *man, struct roff_node *n)
886: {
887:
888: switch (man->next) {
889: case ROFF_NEXT_SIBLING:
1.281 schwarze 890: if (man->last->next != NULL) {
891: n->next = man->last->next;
892: man->last->next->prev = n;
893: } else
894: man->last->parent->last = n;
1.266 schwarze 895: man->last->next = n;
896: n->prev = man->last;
897: n->parent = man->last->parent;
898: break;
899: case ROFF_NEXT_CHILD:
1.287 schwarze 900: if (man->last->child != NULL) {
901: n->next = man->last->child;
902: man->last->child->prev = n;
903: } else
904: man->last->last = n;
1.266 schwarze 905: man->last->child = n;
906: n->parent = man->last;
907: break;
908: default:
909: abort();
910: }
1.282 schwarze 911: man->last = n;
1.266 schwarze 912:
913: switch (n->type) {
914: case ROFFT_HEAD:
915: n->parent->head = n;
916: break;
917: case ROFFT_BODY:
1.282 schwarze 918: if (n->end != ENDBODY_NOT)
919: return;
1.266 schwarze 920: n->parent->body = n;
921: break;
922: case ROFFT_TAIL:
923: n->parent->tail = n;
924: break;
925: default:
1.282 schwarze 926: return;
1.266 schwarze 927: }
1.282 schwarze 928:
929: /*
930: * Copy over the normalised-data pointer of our parent. Not
931: * everybody has one, but copying a null pointer is fine.
932: */
933:
934: n->norm = n->parent->norm;
935: assert(n->parent->type == ROFFT_BLOCK);
1.266 schwarze 936: }
937:
1.267 schwarze 938: void
939: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
940: {
941: struct roff_node *n;
942:
943: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
944: n->string = roff_strdup(man->roff, word);
945: roff_node_append(man, n);
1.286 schwarze 946: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 947: man->next = ROFF_NEXT_SIBLING;
948: }
949:
950: void
951: roff_word_append(struct roff_man *man, const char *word)
952: {
953: struct roff_node *n;
954: char *addstr, *newstr;
955:
956: n = man->last;
957: addstr = roff_strdup(man->roff, word);
958: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
959: free(addstr);
960: free(n->string);
961: n->string = newstr;
962: man->next = ROFF_NEXT_SIBLING;
1.268 schwarze 963: }
964:
965: void
966: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
967: {
968: struct roff_node *n;
969:
970: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
971: roff_node_append(man, n);
972: man->next = ROFF_NEXT_CHILD;
973: }
974:
975: struct roff_node *
976: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
977: {
978: struct roff_node *n;
979:
980: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
981: roff_node_append(man, n);
982: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 983: return n;
1.267 schwarze 984: }
985:
1.266 schwarze 986: struct roff_node *
987: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
988: {
989: struct roff_node *n;
990:
991: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
992: roff_node_append(man, n);
993: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 994: return n;
1.266 schwarze 995: }
996:
997: struct roff_node *
998: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
999: {
1000: struct roff_node *n;
1001:
1002: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1003: roff_node_append(man, n);
1004: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1005: return n;
1.267 schwarze 1006: }
1007:
1.321 schwarze 1008: static void
1.346 schwarze 1009: roff_addtbl(struct roff_man *man, int line, struct tbl_node *tbl)
1.267 schwarze 1010: {
1011: struct roff_node *n;
1.346 schwarze 1012: struct tbl_span *span;
1.267 schwarze 1013:
1014: if (man->macroset == MACROSET_MAN)
1.302 schwarze 1015: man_breakscope(man, ROFF_TS);
1.321 schwarze 1016: while ((span = tbl_span(tbl)) != NULL) {
1.346 schwarze 1017: n = roff_node_alloc(man, line, 0, ROFFT_TBL, TOKEN_NONE);
1.321 schwarze 1018: n->span = span;
1019: roff_node_append(man, n);
1020: n->flags |= NODE_VALID | NODE_ENDED;
1021: man->next = ROFF_NEXT_SIBLING;
1022: }
1.266 schwarze 1023: }
1024:
1025: void
1026: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1027: {
1028:
1029: /* Adjust siblings. */
1030:
1031: if (n->prev)
1032: n->prev->next = n->next;
1033: if (n->next)
1034: n->next->prev = n->prev;
1035:
1036: /* Adjust parent. */
1037:
1038: if (n->parent != NULL) {
1039: if (n->parent->child == n)
1040: n->parent->child = n->next;
1041: if (n->parent->last == n)
1042: n->parent->last = n->prev;
1043: }
1044:
1045: /* Adjust parse point. */
1046:
1047: if (man == NULL)
1048: return;
1049: if (man->last == n) {
1050: if (n->prev == NULL) {
1051: man->last = n->parent;
1052: man->next = ROFF_NEXT_CHILD;
1053: } else {
1054: man->last = n->prev;
1055: man->next = ROFF_NEXT_SIBLING;
1056: }
1057: }
1058: if (man->first == n)
1059: man->first = NULL;
1.344 schwarze 1060: }
1061:
1062: void
1063: roff_node_relink(struct roff_man *man, struct roff_node *n)
1064: {
1065: roff_node_unlink(man, n);
1066: n->prev = n->next = NULL;
1067: roff_node_append(man, n);
1.266 schwarze 1068: }
1069:
1070: void
1071: roff_node_free(struct roff_node *n)
1072: {
1073:
1074: if (n->args != NULL)
1075: mdoc_argv_free(n->args);
1076: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1077: free(n->norm);
1.347 schwarze 1078: eqn_box_free(n->eqn);
1.266 schwarze 1079: free(n->string);
1080: free(n);
1081: }
1082:
1083: void
1084: roff_node_delete(struct roff_man *man, struct roff_node *n)
1085: {
1086:
1087: while (n->child != NULL)
1088: roff_node_delete(man, n->child);
1089: roff_node_unlink(man, n);
1090: roff_node_free(n);
1.269 schwarze 1091: }
1092:
1093: void
1094: deroff(char **dest, const struct roff_node *n)
1095: {
1096: char *cp;
1097: size_t sz;
1098:
1099: if (n->type != ROFFT_TEXT) {
1100: for (n = n->child; n != NULL; n = n->next)
1101: deroff(dest, n);
1102: return;
1103: }
1104:
1.288 schwarze 1105: /* Skip leading whitespace. */
1.269 schwarze 1106:
1.288 schwarze 1107: for (cp = n->string; *cp != '\0'; cp++) {
1.289 schwarze 1108: if (cp[0] == '\\' && cp[1] != '\0' &&
1109: strchr(" %&0^|~", cp[1]) != NULL)
1.269 schwarze 1110: cp++;
1.288 schwarze 1111: else if ( ! isspace((unsigned char)*cp))
1.269 schwarze 1112: break;
1113: }
1114:
1.289 schwarze 1115: /* Skip trailing backslash. */
1116:
1117: sz = strlen(cp);
1.290 schwarze 1118: if (sz > 0 && cp[sz - 1] == '\\')
1.289 schwarze 1119: sz--;
1120:
1.269 schwarze 1121: /* Skip trailing whitespace. */
1122:
1.289 schwarze 1123: for (; sz; sz--)
1.269 schwarze 1124: if ( ! isspace((unsigned char)cp[sz-1]))
1125: break;
1126:
1127: /* Skip empty strings. */
1128:
1129: if (sz == 0)
1130: return;
1131:
1132: if (*dest == NULL) {
1133: *dest = mandoc_strndup(cp, sz);
1134: return;
1135: }
1136:
1137: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1138: free(*dest);
1139: *dest = cp;
1.266 schwarze 1140: }
1141:
1142: /* --- main functions of the roff parser ---------------------------------- */
1143:
1.94 kristaps 1144: /*
1.206 schwarze 1145: * In the current line, expand escape sequences that tend to get
1146: * used in numerical expressions and conditional requests.
1147: * Also check the syntax of the remaining escape sequences.
1.154 kristaps 1148: */
1.340 schwarze 1149: static int
1.238 schwarze 1150: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.94 kristaps 1151: {
1.339 schwarze 1152: struct mctx *ctx; /* current macro call context */
1.208 schwarze 1153: char ubuf[24]; /* buffer to print the number */
1.328 schwarze 1154: struct roff_node *n; /* used for header comments */
1.205 schwarze 1155: const char *start; /* start of the string to process */
1.209 schwarze 1156: char *stesc; /* start of an escape sequence ('\\') */
1.352 ! schwarze 1157: const char *esct; /* type of esccape sequence */
1.328 schwarze 1158: char *ep; /* end of comment string */
1.108 schwarze 1159: const char *stnam; /* start of the name, after "[(*" */
1160: const char *cp; /* end of the name, e.g. before ']' */
1161: const char *res; /* the string to be substituted */
1.238 schwarze 1162: char *nbuf; /* new buffer to copy buf->buf to */
1.181 schwarze 1163: size_t maxl; /* expected length of the escape name */
1164: size_t naml; /* actual length of the escape name */
1.339 schwarze 1165: size_t asz; /* length of the replacement */
1166: size_t rsz; /* length of the rest of the string */
1.237 schwarze 1167: int inaml; /* length returned from mandoc_escape() */
1.181 schwarze 1168: int expand_count; /* to avoid infinite loops */
1.206 schwarze 1169: int npos; /* position in numeric expression */
1.218 schwarze 1170: int arg_complete; /* argument not interrupted by eol */
1.339 schwarze 1171: int quote_args; /* true for \\$@, false for \\$* */
1.303 schwarze 1172: int done; /* no more input available */
1.315 schwarze 1173: int deftype; /* type of definition to paste */
1.323 schwarze 1174: int rcsid; /* kind of RCS id seen */
1.352 ! schwarze 1175: enum mandocerr err; /* for escape sequence problems */
1.327 schwarze 1176: char sign; /* increment number register */
1.206 schwarze 1177: char term; /* character terminating the escape */
1.94 kristaps 1178:
1.303 schwarze 1179: /* Search forward for comments. */
1180:
1181: done = 0;
1182: start = buf->buf + pos;
1183: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1184: if (stesc[0] != r->escape || stesc[1] == '\0')
1185: continue;
1186: stesc++;
1187: if (*stesc != '"' && *stesc != '#')
1188: continue;
1.313 schwarze 1189:
1190: /* Comment found, look for RCS id. */
1191:
1.323 schwarze 1192: rcsid = 0;
1.313 schwarze 1193: if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
1.323 schwarze 1194: rcsid = 1 << MANDOC_OS_OPENBSD;
1.313 schwarze 1195: cp += 8;
1196: } else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
1.323 schwarze 1197: rcsid = 1 << MANDOC_OS_NETBSD;
1.313 schwarze 1198: cp += 7;
1199: }
1200: if (cp != NULL &&
1201: isalnum((unsigned char)*cp) == 0 &&
1.314 schwarze 1202: strchr(cp, '$') != NULL) {
1.323 schwarze 1203: if (r->man->meta.rcsids & rcsid)
1.350 schwarze 1204: mandoc_msg(MANDOCERR_RCS_REP, ln,
1205: (int)(stesc - buf->buf) + 1,
1206: "%s", stesc + 1);
1.323 schwarze 1207: r->man->meta.rcsids |= rcsid;
1.314 schwarze 1208: }
1.313 schwarze 1209:
1210: /* Handle trailing whitespace. */
1211:
1.328 schwarze 1212: ep = strchr(stesc--, '\0') - 1;
1213: if (*ep == '\n') {
1.303 schwarze 1214: done = 1;
1.328 schwarze 1215: ep--;
1.303 schwarze 1216: }
1.328 schwarze 1217: if (*ep == ' ' || *ep == '\t')
1.350 schwarze 1218: mandoc_msg(MANDOCERR_SPACE_EOL,
1219: ln, (int)(ep - buf->buf), NULL);
1.328 schwarze 1220:
1221: /*
1222: * Save comments preceding the title macro
1223: * in the syntax tree.
1224: */
1225:
1226: if (r->format == 0) {
1227: while (*ep == ' ' || *ep == '\t')
1228: ep--;
1229: ep[1] = '\0';
1230: n = roff_node_alloc(r->man,
1231: ln, stesc + 1 - buf->buf,
1232: ROFFT_COMMENT, TOKEN_NONE);
1233: n->string = mandoc_strdup(stesc + 2);
1234: roff_node_append(r->man, n);
1235: n->flags |= NODE_VALID | NODE_ENDED;
1236: r->man->next = ROFF_NEXT_SIBLING;
1237: }
1238:
1.334 schwarze 1239: /* Line continuation with comment. */
1240:
1241: if (stesc[1] == '#') {
1242: *stesc = '\0';
1.340 schwarze 1243: return ROFF_IGN | ROFF_APPEND;
1.334 schwarze 1244: }
1245:
1246: /* Discard normal comments. */
1.328 schwarze 1247:
1.335 schwarze 1248: while (stesc > start && stesc[-1] == ' ' &&
1249: (stesc == start + 1 || stesc[-2] != '\\'))
1.303 schwarze 1250: stesc--;
1251: *stesc = '\0';
1252: break;
1253: }
1254: if (stesc == start)
1255: return ROFF_CONT;
1256: stesc--;
1257:
1258: /* Notice the end of the input. */
1259:
1260: if (*stesc == '\n') {
1261: *stesc-- = '\0';
1262: done = 1;
1263: }
1264:
1.170 schwarze 1265: expand_count = 0;
1.303 schwarze 1266: while (stesc >= start) {
1.170 schwarze 1267:
1.205 schwarze 1268: /* Search backwards for the next backslash. */
1269:
1.303 schwarze 1270: if (*stesc != r->escape) {
1271: if (*stesc == '\\') {
1272: *stesc = '\0';
1273: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1274: buf->buf, stesc + 1) + 1;
1275: start = nbuf + pos;
1276: stesc = nbuf + (stesc - buf->buf);
1277: free(buf->buf);
1278: buf->buf = nbuf;
1279: }
1280: stesc--;
1.205 schwarze 1281: continue;
1.303 schwarze 1282: }
1.205 schwarze 1283:
1284: /* If it is escaped, skip it. */
1285:
1286: for (cp = stesc - 1; cp >= start; cp--)
1.303 schwarze 1287: if (*cp != r->escape)
1.205 schwarze 1288: break;
1289:
1.238 schwarze 1290: if ((stesc - cp) % 2 == 0) {
1.303 schwarze 1291: while (stesc > cp)
1292: *stesc-- = '\\';
1.205 schwarze 1293: continue;
1.303 schwarze 1294: } else if (stesc[1] != '\0') {
1295: *stesc = '\\';
1296: } else {
1297: *stesc-- = '\0';
1298: if (done)
1299: continue;
1300: else
1.340 schwarze 1301: return ROFF_IGN | ROFF_APPEND;
1.205 schwarze 1302: }
1.108 schwarze 1303:
1.206 schwarze 1304: /* Decide whether to expand or to check only. */
1.108 schwarze 1305:
1.206 schwarze 1306: term = '\0';
1.205 schwarze 1307: cp = stesc + 1;
1.352 ! schwarze 1308: if (*cp == 'E')
! 1309: cp++;
! 1310: esct = cp;
! 1311: switch (*esct) {
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:
1.352 ! schwarze 1327: err = MANDOCERR_OK;
! 1328: switch(mandoc_escape(&cp, &stnam, &inaml)) {
! 1329: case ESCAPE_SPECIAL:
! 1330: if (mchars_spec2cp(stnam, inaml) >= 0)
! 1331: break;
! 1332: /* FALLTHROUGH */
! 1333: case ESCAPE_ERROR:
! 1334: err = MANDOCERR_ESC_BAD;
! 1335: break;
! 1336: case ESCAPE_UNDEF:
! 1337: err = MANDOCERR_ESC_UNDEF;
! 1338: break;
! 1339: case ESCAPE_UNSUPP:
! 1340: err = MANDOCERR_ESC_UNSUPP;
! 1341: break;
! 1342: default:
! 1343: break;
! 1344: }
! 1345: if (err != MANDOCERR_OK)
! 1346: mandoc_msg(err, ln, (int)(stesc - buf->buf),
1.219 schwarze 1347: "%.*s", (int)(cp - stesc), stesc);
1.303 schwarze 1348: stesc--;
1.205 schwarze 1349: continue;
1.152 kristaps 1350: }
1351:
1.205 schwarze 1352: if (EXPAND_LIMIT < ++expand_count) {
1.350 schwarze 1353: mandoc_msg(MANDOCERR_ROFFLOOP,
1.238 schwarze 1354: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1355: return ROFF_IGN;
1.205 schwarze 1356: }
1.108 schwarze 1357:
1358: /*
1359: * The third character decides the length
1.181 schwarze 1360: * of the name of the string or register.
1.108 schwarze 1361: * Save a pointer to the name.
1362: */
1363:
1.238 schwarze 1364: if (term == '\0') {
1.206 schwarze 1365: switch (*++cp) {
1.207 schwarze 1366: case '\0':
1.206 schwarze 1367: maxl = 0;
1368: break;
1.207 schwarze 1369: case '(':
1.206 schwarze 1370: cp++;
1371: maxl = 2;
1372: break;
1.207 schwarze 1373: case '[':
1.206 schwarze 1374: cp++;
1375: term = ']';
1376: maxl = 0;
1377: break;
1378: default:
1379: maxl = 1;
1380: break;
1381: }
1382: } else {
1383: cp += 2;
1.94 kristaps 1384: maxl = 0;
1385: }
1.108 schwarze 1386: stnam = cp;
1.94 kristaps 1387:
1.108 schwarze 1388: /* Advance to the end of the name. */
1.94 kristaps 1389:
1.253 schwarze 1390: naml = 0;
1.218 schwarze 1391: arg_complete = 1;
1.253 schwarze 1392: while (maxl == 0 || naml < maxl) {
1.238 schwarze 1393: if (*cp == '\0') {
1.350 schwarze 1394: mandoc_msg(MANDOCERR_ESC_BAD, ln,
1395: (int)(stesc - buf->buf), "%s", stesc);
1.218 schwarze 1396: arg_complete = 0;
1.206 schwarze 1397: break;
1.153 kristaps 1398: }
1.238 schwarze 1399: if (maxl == 0 && *cp == term) {
1.206 schwarze 1400: cp++;
1.253 schwarze 1401: break;
1402: }
1.352 ! schwarze 1403: if (*cp++ != '\\' || *esct != 'w') {
1.253 schwarze 1404: naml++;
1405: continue;
1406: }
1407: switch (mandoc_escape(&cp, NULL, NULL)) {
1408: case ESCAPE_SPECIAL:
1409: case ESCAPE_UNICODE:
1410: case ESCAPE_NUMBERED:
1.352 ! schwarze 1411: case ESCAPE_UNDEF:
1.253 schwarze 1412: case ESCAPE_OVERSTRIKE:
1413: naml++;
1414: break;
1415: default:
1.94 kristaps 1416: break;
1.206 schwarze 1417: }
1.94 kristaps 1418: }
1419:
1.108 schwarze 1420: /*
1421: * Retrieve the replacement string; if it is
1422: * undefined, resume searching for escapes.
1423: */
1424:
1.352 ! schwarze 1425: switch (*esct) {
1.207 schwarze 1426: case '*':
1.315 schwarze 1427: if (arg_complete) {
1428: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1429: res = roff_getstrn(r, stnam, naml, &deftype);
1.331 schwarze 1430:
1431: /*
1432: * If not overriden, let \*(.T
1433: * through to the formatters.
1434: */
1435:
1436: if (res == NULL && naml == 2 &&
1437: stnam[0] == '.' && stnam[1] == 'T') {
1438: roff_setstrn(&r->strtab,
1439: ".T", 2, NULL, 0, 0);
1440: stesc--;
1441: continue;
1442: }
1.315 schwarze 1443: }
1.206 schwarze 1444: break;
1.339 schwarze 1445: case '$':
1446: if (r->mstackpos < 0) {
1.350 schwarze 1447: mandoc_msg(MANDOCERR_ARG_UNDEF, ln,
1448: (int)(stesc - buf->buf), "%.3s", stesc);
1.339 schwarze 1449: break;
1450: }
1451: ctx = r->mstack + r->mstackpos;
1.352 ! schwarze 1452: npos = esct[1] - '1';
1.339 schwarze 1453: if (npos >= 0 && npos <= 8) {
1454: res = npos < ctx->argc ?
1455: ctx->argv[npos] : "";
1456: break;
1457: }
1.352 ! schwarze 1458: if (esct[1] == '*')
1.339 schwarze 1459: quote_args = 0;
1.352 ! schwarze 1460: else if (esct[1] == '@')
1.339 schwarze 1461: quote_args = 1;
1462: else {
1.350 schwarze 1463: mandoc_msg(MANDOCERR_ARG_NONUM, ln,
1464: (int)(stesc - buf->buf), "%.3s", stesc);
1.339 schwarze 1465: break;
1466: }
1467: asz = 0;
1468: for (npos = 0; npos < ctx->argc; npos++) {
1469: if (npos)
1470: asz++; /* blank */
1471: if (quote_args)
1472: asz += 2; /* quotes */
1473: asz += strlen(ctx->argv[npos]);
1474: }
1475: if (asz != 3) {
1476: rsz = buf->sz - (stesc - buf->buf) - 3;
1477: if (asz < 3)
1478: memmove(stesc + asz, stesc + 3, rsz);
1479: buf->sz += asz - 3;
1480: nbuf = mandoc_realloc(buf->buf, buf->sz);
1481: start = nbuf + pos;
1482: stesc = nbuf + (stesc - buf->buf);
1483: buf->buf = nbuf;
1484: if (asz > 3)
1485: memmove(stesc + asz, stesc + 3, rsz);
1486: }
1487: for (npos = 0; npos < ctx->argc; npos++) {
1488: if (npos)
1489: *stesc++ = ' ';
1490: if (quote_args)
1491: *stesc++ = '"';
1492: cp = ctx->argv[npos];
1493: while (*cp != '\0')
1494: *stesc++ = *cp++;
1495: if (quote_args)
1496: *stesc++ = '"';
1497: }
1498: continue;
1.207 schwarze 1499: case 'B':
1.206 schwarze 1500: npos = 0;
1.218 schwarze 1501: ubuf[0] = arg_complete &&
1.261 schwarze 1502: roff_evalnum(r, ln, stnam, &npos,
1503: NULL, ROFFNUM_SCALE) &&
1.218 schwarze 1504: stnam + npos + 1 == cp ? '1' : '0';
1.206 schwarze 1505: ubuf[1] = '\0';
1506: break;
1.207 schwarze 1507: case 'n':
1.218 schwarze 1508: if (arg_complete)
1509: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.327 schwarze 1510: roff_getregn(r, stnam, naml, sign));
1.218 schwarze 1511: else
1512: ubuf[0] = '\0';
1.206 schwarze 1513: break;
1.207 schwarze 1514: case 'w':
1.218 schwarze 1515: /* use even incomplete args */
1.208 schwarze 1516: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.206 schwarze 1517: 24 * (int)naml);
1518: break;
1519: }
1.94 kristaps 1520:
1.238 schwarze 1521: if (res == NULL) {
1.352 ! schwarze 1522: if (*esct == '*')
1.350 schwarze 1523: mandoc_msg(MANDOCERR_STR_UNDEF,
1524: ln, (int)(stesc - buf->buf),
1.339 schwarze 1525: "%.*s", (int)naml, stnam);
1.142 kristaps 1526: res = "";
1.246 schwarze 1527: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1.350 schwarze 1528: mandoc_msg(MANDOCERR_ROFFLOOP,
1.246 schwarze 1529: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1530: return ROFF_IGN;
1.94 kristaps 1531: }
1532:
1.108 schwarze 1533: /* Replace the escape sequence by the string. */
1534:
1.209 schwarze 1535: *stesc = '\0';
1.238 schwarze 1536: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1537: buf->buf, res, cp) + 1;
1.94 kristaps 1538:
1.205 schwarze 1539: /* Prepare for the next replacement. */
1.94 kristaps 1540:
1.205 schwarze 1541: start = nbuf + pos;
1.238 schwarze 1542: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1543: free(buf->buf);
1544: buf->buf = nbuf;
1.154 kristaps 1545: }
1.277 schwarze 1546: return ROFF_CONT;
1.154 kristaps 1547: }
1548:
1549: /*
1.275 schwarze 1550: * Process text streams.
1.154 kristaps 1551: */
1.340 schwarze 1552: static int
1.305 schwarze 1553: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.154 kristaps 1554: {
1555: size_t sz;
1556: const char *start;
1.178 schwarze 1557: char *p;
1558: int isz;
1.154 kristaps 1559: enum mandoc_esc esc;
1560:
1.275 schwarze 1561: /* Spring the input line trap. */
1562:
1563: if (roffit_lines == 1) {
1564: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1565: free(buf->buf);
1566: buf->buf = p;
1567: buf->sz = isz + 1;
1568: *offs = 0;
1569: free(roffit_macro);
1570: roffit_lines = 0;
1.277 schwarze 1571: return ROFF_REPARSE;
1.275 schwarze 1572: } else if (roffit_lines > 1)
1573: --roffit_lines;
1574:
1.305 schwarze 1575: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1576: if (roffce_lines < 1) {
1577: r->man->last = roffce_node;
1578: r->man->next = ROFF_NEXT_SIBLING;
1579: roffce_lines = 0;
1580: roffce_node = NULL;
1581: } else
1582: roffce_lines--;
1583: }
1584:
1.275 schwarze 1585: /* Convert all breakable hyphens into ASCII_HYPH. */
1586:
1.238 schwarze 1587: start = p = buf->buf + pos;
1.154 kristaps 1588:
1.238 schwarze 1589: while (*p != '\0') {
1.154 kristaps 1590: sz = strcspn(p, "-\\");
1591: p += sz;
1592:
1.238 schwarze 1593: if (*p == '\0')
1.159 kristaps 1594: break;
1595:
1.238 schwarze 1596: if (*p == '\\') {
1.154 kristaps 1597: /* Skip over escapes. */
1598: p++;
1.189 schwarze 1599: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.238 schwarze 1600: if (esc == ESCAPE_ERROR)
1.154 kristaps 1601: break;
1.264 schwarze 1602: while (*p == '-')
1603: p++;
1.155 kristaps 1604: continue;
1.159 kristaps 1605: } else if (p == start) {
1.158 kristaps 1606: p++;
1.155 kristaps 1607: continue;
1.158 kristaps 1608: }
1.155 kristaps 1609:
1.171 schwarze 1610: if (isalpha((unsigned char)p[-1]) &&
1611: isalpha((unsigned char)p[1]))
1.155 kristaps 1612: *p = ASCII_HYPH;
1613: p++;
1.94 kristaps 1614: }
1.277 schwarze 1615: return ROFF_CONT;
1.94 kristaps 1616: }
1617:
1.340 schwarze 1618: int
1.238 schwarze 1619: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.67 kristaps 1620: {
1.294 schwarze 1621: enum roff_tok t;
1.340 schwarze 1622: int e;
1.238 schwarze 1623: int pos; /* parse point */
1.243 schwarze 1624: int spos; /* saved parse point for messages */
1.238 schwarze 1625: int ppos; /* original offset in buf->buf */
1626: int ctl; /* macro line (boolean) */
1627:
1628: ppos = pos = *offs;
1.79 kristaps 1629:
1.230 schwarze 1630: /* Handle in-line equation delimiters. */
1631:
1.236 schwarze 1632: if (r->tbl == NULL &&
1633: r->last_eqn != NULL && r->last_eqn->delim &&
1.230 schwarze 1634: (r->eqn == NULL || r->eqn_inline)) {
1.238 schwarze 1635: e = roff_eqndelim(r, buf, pos);
1.230 schwarze 1636: if (e == ROFF_REPARSE)
1.277 schwarze 1637: return e;
1.230 schwarze 1638: assert(e == ROFF_CONT);
1639: }
1640:
1641: /* Expand some escape sequences. */
1.94 kristaps 1642:
1.238 schwarze 1643: e = roff_res(r, buf, ln, pos);
1.340 schwarze 1644: if ((e & ROFF_MASK) == ROFF_IGN)
1.277 schwarze 1645: return e;
1.238 schwarze 1646: assert(e == ROFF_CONT);
1.94 kristaps 1647:
1.238 schwarze 1648: ctl = roff_getcontrol(r, buf->buf, &pos);
1.130 kristaps 1649:
1.94 kristaps 1650: /*
1.79 kristaps 1651: * First, if a scope is open and we're not a macro, pass the
1.252 schwarze 1652: * text through the macro's filter.
1653: * Equations process all content themselves.
1654: * Tables process almost all content themselves, but we want
1655: * to warn about macros before passing it there.
1.79 kristaps 1656: */
1.74 kristaps 1657:
1.252 schwarze 1658: if (r->last != NULL && ! ctl) {
1.78 kristaps 1659: t = r->last->tok;
1.238 schwarze 1660: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.340 schwarze 1661: if ((e & ROFF_MASK) == ROFF_IGN)
1.277 schwarze 1662: return e;
1.340 schwarze 1663: e &= ~ROFF_MASK;
1664: } else
1665: e = ROFF_IGN;
1.319 schwarze 1666: if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
1667: eqn_read(r->eqn, buf->buf + ppos);
1.340 schwarze 1668: return e;
1.319 schwarze 1669: }
1.321 schwarze 1670: if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
1671: tbl_read(r->tbl, ln, buf->buf, ppos);
1.346 schwarze 1672: roff_addtbl(r->man, ln, r->tbl);
1.340 schwarze 1673: return e;
1.321 schwarze 1674: }
1.252 schwarze 1675: if ( ! ctl)
1.340 schwarze 1676: return roff_parsetext(r, buf, pos, offs) | e;
1.228 schwarze 1677:
1678: /* Skip empty request lines. */
1679:
1.238 schwarze 1680: if (buf->buf[pos] == '"') {
1.350 schwarze 1681: mandoc_msg(MANDOCERR_COMMENT_BAD, ln, pos, NULL);
1.277 schwarze 1682: return ROFF_IGN;
1.238 schwarze 1683: } else if (buf->buf[pos] == '\0')
1.277 schwarze 1684: return ROFF_IGN;
1.67 kristaps 1685:
1.79 kristaps 1686: /*
1687: * If a scope is open, go to the child handler for that macro,
1688: * as it may want to preprocess before doing anything with it.
1.125 kristaps 1689: * Don't do so if an equation is open.
1.79 kristaps 1690: */
1.78 kristaps 1691:
1.79 kristaps 1692: if (r->last) {
1693: t = r->last->tok;
1.277 schwarze 1694: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1695: }
1.78 kristaps 1696:
1.243 schwarze 1697: /* No scope is open. This is a new request or macro. */
1698:
1699: spos = pos;
1700: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1701:
1702: /* Tables ignore most macros. */
1703:
1.308 schwarze 1704: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.309 schwarze 1705: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.350 schwarze 1706: mandoc_msg(MANDOCERR_TBLMACRO,
1707: ln, pos, "%s", buf->buf + spos);
1.308 schwarze 1708: if (t != TOKEN_NONE)
1.277 schwarze 1709: return ROFF_IGN;
1.257 schwarze 1710: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1711: pos++;
1.291 schwarze 1712: while (buf->buf[pos] == ' ')
1.257 schwarze 1713: pos++;
1.321 schwarze 1714: tbl_read(r->tbl, ln, buf->buf, pos);
1.346 schwarze 1715: roff_addtbl(r->man, ln, r->tbl);
1.321 schwarze 1716: return ROFF_IGN;
1.243 schwarze 1717: }
1718:
1.305 schwarze 1719: /* For now, let high level macros abort .ce mode. */
1720:
1721: if (ctl && roffce_node != NULL &&
1.324 schwarze 1722: (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
1723: t == ROFF_TH || t == ROFF_TS)) {
1.305 schwarze 1724: r->man->last = roffce_node;
1725: r->man->next = ROFF_NEXT_SIBLING;
1726: roffce_lines = 0;
1727: roffce_node = NULL;
1728: }
1729:
1.79 kristaps 1730: /*
1.243 schwarze 1731: * This is neither a roff request nor a user-defined macro.
1732: * Let the standard macro set parsers handle it.
1.79 kristaps 1733: */
1.67 kristaps 1734:
1.294 schwarze 1735: if (t == TOKEN_NONE)
1.277 schwarze 1736: return ROFF_CONT;
1.243 schwarze 1737:
1738: /* Execute a roff request or a user defined macro. */
1.67 kristaps 1739:
1.296 schwarze 1740: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.74 kristaps 1741: }
1742:
1.339 schwarze 1743: /*
1744: * Internal interface function to tell the roff parser that execution
1745: * of the current macro ended. This is required because macro
1746: * definitions usually do not end with a .return request.
1747: */
1748: void
1749: roff_userret(struct roff *r)
1750: {
1751: struct mctx *ctx;
1752: int i;
1753:
1754: assert(r->mstackpos >= 0);
1755: ctx = r->mstack + r->mstackpos;
1756: for (i = 0; i < ctx->argc; i++)
1757: free(ctx->argv[i]);
1758: ctx->argc = 0;
1759: r->mstackpos--;
1760: }
1761:
1.117 kristaps 1762: void
1.74 kristaps 1763: roff_endparse(struct roff *r)
1764: {
1.321 schwarze 1765: if (r->last != NULL)
1.350 schwarze 1766: mandoc_msg(MANDOCERR_BLK_NOEND, r->last->line,
1767: r->last->col, "%s", roff_name[r->last->tok]);
1.117 kristaps 1768:
1.321 schwarze 1769: if (r->eqn != NULL) {
1.350 schwarze 1770: mandoc_msg(MANDOCERR_BLK_NOEND,
1.319 schwarze 1771: r->eqn->node->line, r->eqn->node->pos, "EQ");
1772: eqn_parse(r->eqn);
1773: r->eqn = NULL;
1.125 kristaps 1774: }
1775:
1.321 schwarze 1776: if (r->tbl != NULL) {
1.346 schwarze 1777: tbl_end(r->tbl, 1);
1.321 schwarze 1778: r->tbl = NULL;
1.117 kristaps 1779: }
1.67 kristaps 1780: }
1781:
1782: /*
1783: * Parse a roff node's type from the input buffer. This must be in the
1784: * form of ".foo xxx" in the usual way.
1785: */
1.294 schwarze 1786: static enum roff_tok
1.214 schwarze 1787: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.67 kristaps 1788: {
1.214 schwarze 1789: char *cp;
1.106 kristaps 1790: const char *mac;
1791: size_t maclen;
1.315 schwarze 1792: int deftype;
1.294 schwarze 1793: enum roff_tok t;
1.67 kristaps 1794:
1.214 schwarze 1795: cp = buf + *pos;
1796:
1797: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.294 schwarze 1798: return TOKEN_NONE;
1.67 kristaps 1799:
1.214 schwarze 1800: mac = cp;
1801: maclen = roff_getname(r, &cp, ln, ppos);
1.67 kristaps 1802:
1.315 schwarze 1803: deftype = ROFFDEF_USER | ROFFDEF_REN;
1804: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
1805: switch (deftype) {
1806: case ROFFDEF_USER:
1807: t = ROFF_USERDEF;
1808: break;
1809: case ROFFDEF_REN:
1810: t = ROFF_RENAMED;
1811: break;
1812: default:
1813: t = roffhash_find(r->reqtab, mac, maclen);
1814: break;
1815: }
1.294 schwarze 1816: if (t != TOKEN_NONE)
1.214 schwarze 1817: *pos = cp - buf;
1.325 schwarze 1818: else if (deftype == ROFFDEF_UNDEF) {
1819: /* Using an undefined macro defines it to be empty. */
1820: roff_setstrn(&r->strtab, mac, maclen, "", 0, 0);
1821: roff_setstrn(&r->rentab, mac, maclen, NULL, 0, 0);
1822: }
1.277 schwarze 1823: return t;
1.67 kristaps 1824: }
1825:
1.266 schwarze 1826: /* --- handling of request blocks ----------------------------------------- */
1827:
1.340 schwarze 1828: static int
1.76 kristaps 1829: roff_cblock(ROFF_ARGS)
1.67 kristaps 1830: {
1831:
1.79 kristaps 1832: /*
1833: * A block-close `..' should only be invoked as a child of an
1834: * ignore macro, otherwise raise a warning and just ignore it.
1835: */
1836:
1.238 schwarze 1837: if (r->last == NULL) {
1.350 schwarze 1838: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.277 schwarze 1839: return ROFF_IGN;
1.76 kristaps 1840: }
1.67 kristaps 1841:
1.81 kristaps 1842: switch (r->last->tok) {
1.207 schwarze 1843: case ROFF_am:
1.220 schwarze 1844: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.207 schwarze 1845: case ROFF_ami:
1846: case ROFF_de:
1.108 schwarze 1847: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.207 schwarze 1848: case ROFF_dei:
1849: case ROFF_ig:
1.81 kristaps 1850: break;
1851: default:
1.350 schwarze 1852: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "..");
1.277 schwarze 1853: return ROFF_IGN;
1.76 kristaps 1854: }
1.67 kristaps 1855:
1.238 schwarze 1856: if (buf->buf[pos] != '\0')
1.350 schwarze 1857: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.238 schwarze 1858: ".. %s", buf->buf + pos);
1.71 kristaps 1859:
1860: roffnode_pop(r);
1.76 kristaps 1861: roffnode_cleanscope(r);
1.277 schwarze 1862: return ROFF_IGN;
1.71 kristaps 1863:
1.67 kristaps 1864: }
1865:
1.340 schwarze 1866: static int
1.76 kristaps 1867: roffnode_cleanscope(struct roff *r)
1.67 kristaps 1868: {
1.340 schwarze 1869: int inloop;
1.67 kristaps 1870:
1.340 schwarze 1871: inloop = 0;
1872: while (r->last != NULL) {
1.173 schwarze 1873: if (--r->last->endspan != 0)
1.76 kristaps 1874: break;
1.340 schwarze 1875: inloop += roffnode_pop(r);
1.76 kristaps 1876: }
1.340 schwarze 1877: return inloop;
1.67 kristaps 1878: }
1879:
1.340 schwarze 1880: static int
1.195 schwarze 1881: roff_ccond(struct roff *r, int ln, int ppos)
1.74 kristaps 1882: {
1.76 kristaps 1883: if (NULL == r->last) {
1.350 schwarze 1884: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 1885: return 0;
1.76 kristaps 1886: }
1887:
1.82 kristaps 1888: switch (r->last->tok) {
1.207 schwarze 1889: case ROFF_el:
1890: case ROFF_ie:
1891: case ROFF_if:
1.340 schwarze 1892: case ROFF_while:
1.82 kristaps 1893: break;
1894: default:
1.350 schwarze 1895: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 1896: return 0;
1.75 kristaps 1897: }
1898:
1.76 kristaps 1899: if (r->last->endspan > -1) {
1.350 schwarze 1900: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "\\}");
1.340 schwarze 1901: return 0;
1.76 kristaps 1902: }
1903:
1.340 schwarze 1904: return roffnode_pop(r) + roffnode_cleanscope(r);
1.76 kristaps 1905: }
1906:
1.340 schwarze 1907: static int
1.80 kristaps 1908: roff_block(ROFF_ARGS)
1.76 kristaps 1909: {
1.315 schwarze 1910: const char *name, *value;
1911: char *call, *cp, *iname, *rname;
1912: size_t csz, namesz, rsz;
1913: int deftype;
1.106 kristaps 1914:
1.220 schwarze 1915: /* Ignore groff compatibility mode for now. */
1.76 kristaps 1916:
1.238 schwarze 1917: if (tok == ROFF_de1)
1.220 schwarze 1918: tok = ROFF_de;
1.251 schwarze 1919: else if (tok == ROFF_dei1)
1920: tok = ROFF_dei;
1.238 schwarze 1921: else if (tok == ROFF_am1)
1.220 schwarze 1922: tok = ROFF_am;
1.251 schwarze 1923: else if (tok == ROFF_ami1)
1924: tok = ROFF_ami;
1.220 schwarze 1925:
1926: /* Parse the macro name argument. */
1927:
1.238 schwarze 1928: cp = buf->buf + pos;
1929: if (tok == ROFF_ig) {
1.220 schwarze 1930: iname = NULL;
1931: namesz = 0;
1932: } else {
1933: iname = cp;
1934: namesz = roff_getname(r, &cp, ln, ppos);
1935: iname[namesz] = '\0';
1936: }
1.107 kristaps 1937:
1.220 schwarze 1938: /* Resolve the macro name argument if it is indirect. */
1.107 kristaps 1939:
1.238 schwarze 1940: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 1941: deftype = ROFFDEF_USER;
1942: name = roff_getstrn(r, iname, namesz, &deftype);
1943: if (name == NULL) {
1.350 schwarze 1944: mandoc_msg(MANDOCERR_STR_UNDEF,
1945: ln, (int)(iname - buf->buf),
1.220 schwarze 1946: "%.*s", (int)namesz, iname);
1947: namesz = 0;
1948: } else
1949: namesz = strlen(name);
1950: } else
1951: name = iname;
1.107 kristaps 1952:
1.238 schwarze 1953: if (namesz == 0 && tok != ROFF_ig) {
1.350 schwarze 1954: mandoc_msg(MANDOCERR_REQ_EMPTY,
1955: ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 1956: return ROFF_IGN;
1.220 schwarze 1957: }
1.80 kristaps 1958:
1.106 kristaps 1959: roffnode_push(r, tok, name, ln, ppos);
1960:
1961: /*
1962: * At the beginning of a `de' macro, clear the existing string
1963: * with the same name, if there is one. New content will be
1.193 schwarze 1964: * appended from roff_block_text() in multiline mode.
1.106 kristaps 1965: */
1.107 kristaps 1966:
1.311 schwarze 1967: if (tok == ROFF_de || tok == ROFF_dei) {
1.213 schwarze 1968: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.311 schwarze 1969: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.315 schwarze 1970: } else if (tok == ROFF_am || tok == ROFF_ami) {
1971: deftype = ROFFDEF_ANY;
1972: value = roff_getstrn(r, iname, namesz, &deftype);
1973: switch (deftype) { /* Before appending, ... */
1974: case ROFFDEF_PRE: /* copy predefined to user-defined. */
1975: roff_setstrn(&r->strtab, name, namesz,
1976: value, strlen(value), 0);
1977: break;
1978: case ROFFDEF_REN: /* call original standard macro. */
1979: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1980: (int)strlen(value), value);
1981: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1982: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1983: free(call);
1984: break;
1985: case ROFFDEF_STD: /* rename and call standard macro. */
1986: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
1987: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
1988: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1989: (int)rsz, rname);
1990: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1991: free(call);
1992: free(rname);
1993: break;
1994: default:
1995: break;
1996: }
1.311 schwarze 1997: }
1.76 kristaps 1998:
1.238 schwarze 1999: if (*cp == '\0')
1.277 schwarze 2000: return ROFF_IGN;
1.78 kristaps 2001:
1.220 schwarze 2002: /* Get the custom end marker. */
1.107 kristaps 2003:
1.220 schwarze 2004: iname = cp;
1.213 schwarze 2005: namesz = roff_getname(r, &cp, ln, ppos);
1.220 schwarze 2006:
2007: /* Resolve the end marker if it is indirect. */
2008:
1.238 schwarze 2009: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 2010: deftype = ROFFDEF_USER;
2011: name = roff_getstrn(r, iname, namesz, &deftype);
2012: if (name == NULL) {
1.350 schwarze 2013: mandoc_msg(MANDOCERR_STR_UNDEF,
2014: ln, (int)(iname - buf->buf),
1.220 schwarze 2015: "%.*s", (int)namesz, iname);
2016: namesz = 0;
2017: } else
2018: namesz = strlen(name);
2019: } else
2020: name = iname;
2021:
1.213 schwarze 2022: if (namesz)
2023: r->last->end = mandoc_strndup(name, namesz);
1.78 kristaps 2024:
1.238 schwarze 2025: if (*cp != '\0')
1.350 schwarze 2026: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.295 schwarze 2027: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.74 kristaps 2028:
1.277 schwarze 2029: return ROFF_IGN;
1.78 kristaps 2030: }
2031:
1.340 schwarze 2032: static int
1.80 kristaps 2033: roff_block_sub(ROFF_ARGS)
1.79 kristaps 2034: {
1.294 schwarze 2035: enum roff_tok t;
1.79 kristaps 2036: int i, j;
2037:
2038: /*
2039: * First check whether a custom macro exists at this level. If
2040: * it does, then check against it. This is some of groff's
2041: * stranger behaviours. If we encountered a custom end-scope
2042: * tag and that tag also happens to be a "real" macro, then we
2043: * need to try interpreting it again as a real macro. If it's
2044: * not, then return ignore. Else continue.
2045: */
2046:
2047: if (r->last->end) {
1.130 kristaps 2048: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.238 schwarze 2049: if (buf->buf[i] != r->last->end[j])
1.79 kristaps 2050: break;
2051:
1.238 schwarze 2052: if (r->last->end[j] == '\0' &&
2053: (buf->buf[i] == '\0' ||
2054: buf->buf[i] == ' ' ||
2055: buf->buf[i] == '\t')) {
1.79 kristaps 2056: roffnode_pop(r);
2057: roffnode_cleanscope(r);
2058:
1.238 schwarze 2059: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.130 kristaps 2060: i++;
2061:
2062: pos = i;
1.238 schwarze 2063: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.294 schwarze 2064: TOKEN_NONE)
1.277 schwarze 2065: return ROFF_RERUN;
2066: return ROFF_IGN;
1.79 kristaps 2067: }
2068: }
2069:
2070: /*
2071: * If we have no custom end-query or lookup failed, then try
2072: * pulling it out of the hashtable.
2073: */
2074:
1.238 schwarze 2075: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.79 kristaps 2076:
1.238 schwarze 2077: if (t != ROFF_cblock) {
2078: if (tok != ROFF_ig)
2079: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.277 schwarze 2080: return ROFF_IGN;
1.106 kristaps 2081: }
1.79 kristaps 2082:
1.277 schwarze 2083: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 2084: }
2085:
1.340 schwarze 2086: static int
1.80 kristaps 2087: roff_block_text(ROFF_ARGS)
1.78 kristaps 2088: {
2089:
1.238 schwarze 2090: if (tok != ROFF_ig)
2091: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.106 kristaps 2092:
1.277 schwarze 2093: return ROFF_IGN;
1.78 kristaps 2094: }
2095:
1.340 schwarze 2096: static int
1.82 kristaps 2097: roff_cond_sub(ROFF_ARGS)
2098: {
1.340 schwarze 2099: char *ep;
2100: int endloop, irc, rr;
1.294 schwarze 2101: enum roff_tok t;
1.82 kristaps 2102:
1.340 schwarze 2103: irc = ROFF_IGN;
1.82 kristaps 2104: rr = r->last->rule;
1.340 schwarze 2105: endloop = tok != ROFF_while ? ROFF_IGN :
2106: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2107: if (roffnode_cleanscope(r))
2108: irc |= endloop;
1.144 kristaps 2109:
1.196 schwarze 2110: /*
2111: * If `\}' occurs on a macro line without a preceding macro,
2112: * drop the line completely.
2113: */
2114:
1.238 schwarze 2115: ep = buf->buf + pos;
2116: if (ep[0] == '\\' && ep[1] == '}')
1.198 schwarze 2117: rr = 0;
1.196 schwarze 2118:
1.343 schwarze 2119: /*
2120: * The closing delimiter `\}' rewinds the conditional scope
2121: * but is otherwise ignored when interpreting the line.
2122: */
1.144 kristaps 2123:
1.238 schwarze 2124: while ((ep = strchr(ep, '\\')) != NULL) {
1.318 schwarze 2125: switch (ep[1]) {
2126: case '}':
2127: memmove(ep, ep + 2, strlen(ep + 2) + 1);
1.340 schwarze 2128: if (roff_ccond(r, ln, ep - buf->buf))
2129: irc |= endloop;
1.318 schwarze 2130: break;
2131: case '\0':
2132: ++ep;
2133: break;
2134: default:
2135: ep += 2;
2136: break;
1.197 schwarze 2137: }
1.177 schwarze 2138: }
1.318 schwarze 2139:
2140: /*
2141: * Fully handle known macros when they are structurally
2142: * required or when the conditional evaluated to true.
2143: */
2144:
2145: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.340 schwarze 2146: irc |= t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT) ?
2147: (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs) :
2148: rr ? ROFF_CONT : ROFF_IGN;
2149: return irc;
1.82 kristaps 2150: }
2151:
1.340 schwarze 2152: static int
1.82 kristaps 2153: roff_cond_text(ROFF_ARGS)
1.78 kristaps 2154: {
1.140 kristaps 2155: char *ep;
1.340 schwarze 2156: int endloop, irc, rr;
1.82 kristaps 2157:
1.340 schwarze 2158: irc = ROFF_IGN;
1.82 kristaps 2159: rr = r->last->rule;
1.340 schwarze 2160: endloop = tok != ROFF_while ? ROFF_IGN :
2161: rr ? ROFF_LOOPCONT : ROFF_LOOPEXIT;
2162: if (roffnode_cleanscope(r))
2163: irc |= endloop;
1.82 kristaps 2164:
1.343 schwarze 2165: /*
2166: * If `\}' occurs on a text line with neither preceding
2167: * nor following characters, drop the line completely.
2168: */
2169:
1.238 schwarze 2170: ep = buf->buf + pos;
1.343 schwarze 2171: if (strcmp(ep, "\\}") == 0)
2172: rr = 0;
2173:
2174: /*
2175: * The closing delimiter `\}' rewinds the conditional scope
2176: * but is otherwise ignored when interpreting the line.
2177: */
2178:
1.238 schwarze 2179: while ((ep = strchr(ep, '\\')) != NULL) {
1.343 schwarze 2180: switch (ep[1]) {
2181: case '}':
2182: memmove(ep, ep + 2, strlen(ep + 2) + 1);
2183: if (roff_ccond(r, ln, ep - buf->buf))
1.340 schwarze 2184: irc |= endloop;
1.343 schwarze 2185: break;
2186: case '\0':
2187: ++ep;
2188: break;
2189: default:
2190: ep += 2;
2191: break;
1.197 schwarze 2192: }
1.78 kristaps 2193: }
1.340 schwarze 2194: if (rr)
2195: irc |= ROFF_CONT;
2196: return irc;
1.74 kristaps 2197: }
2198:
1.266 schwarze 2199: /* --- handling of numeric and conditional expressions -------------------- */
2200:
1.204 schwarze 2201: /*
2202: * Parse a single signed integer number. Stop at the first non-digit.
2203: * If there is at least one digit, return success and advance the
2204: * parse point, else return failure and let the parse point unchanged.
2205: * Ignore overflows, treat them just like the C language.
2206: */
1.184 schwarze 2207: static int
1.261 schwarze 2208: roff_getnum(const char *v, int *pos, int *res, int flags)
1.184 schwarze 2209: {
1.261 schwarze 2210: int myres, scaled, n, p;
1.206 schwarze 2211:
2212: if (NULL == res)
2213: res = &myres;
1.184 schwarze 2214:
2215: p = *pos;
2216: n = v[p] == '-';
1.261 schwarze 2217: if (n || v[p] == '+')
1.184 schwarze 2218: p++;
2219:
1.261 schwarze 2220: if (flags & ROFFNUM_WHITE)
2221: while (isspace((unsigned char)v[p]))
2222: p++;
2223:
1.184 schwarze 2224: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.204 schwarze 2225: *res = 10 * *res + v[p] - '0';
1.184 schwarze 2226: if (p == *pos + n)
2227: return 0;
2228:
2229: if (n)
2230: *res = -*res;
2231:
1.254 schwarze 2232: /* Each number may be followed by one optional scaling unit. */
2233:
2234: switch (v[p]) {
2235: case 'f':
1.261 schwarze 2236: scaled = *res * 65536;
1.254 schwarze 2237: break;
2238: case 'i':
1.261 schwarze 2239: scaled = *res * 240;
1.254 schwarze 2240: break;
2241: case 'c':
1.261 schwarze 2242: scaled = *res * 240 / 2.54;
1.254 schwarze 2243: break;
2244: case 'v':
2245: case 'P':
1.261 schwarze 2246: scaled = *res * 40;
1.254 schwarze 2247: break;
2248: case 'm':
2249: case 'n':
1.261 schwarze 2250: scaled = *res * 24;
1.254 schwarze 2251: break;
2252: case 'p':
1.261 schwarze 2253: scaled = *res * 10 / 3;
1.254 schwarze 2254: break;
2255: case 'u':
1.261 schwarze 2256: scaled = *res;
1.254 schwarze 2257: break;
2258: case 'M':
1.261 schwarze 2259: scaled = *res * 6 / 25;
1.254 schwarze 2260: break;
2261: default:
1.261 schwarze 2262: scaled = *res;
1.254 schwarze 2263: p--;
2264: break;
2265: }
1.261 schwarze 2266: if (flags & ROFFNUM_SCALE)
2267: *res = scaled;
1.254 schwarze 2268:
2269: *pos = p + 1;
1.277 schwarze 2270: return 1;
1.184 schwarze 2271: }
2272:
1.198 schwarze 2273: /*
2274: * Evaluate a string comparison condition.
2275: * The first character is the delimiter.
2276: * Succeed if the string up to its second occurrence
2277: * matches the string up to its third occurence.
2278: * Advance the cursor after the third occurrence
2279: * or lacking that, to the end of the line.
2280: */
2281: static int
2282: roff_evalstrcond(const char *v, int *pos)
2283: {
2284: const char *s1, *s2, *s3;
2285: int match;
2286:
2287: match = 0;
2288: s1 = v + *pos; /* initial delimiter */
2289: s2 = s1 + 1; /* for scanning the first string */
2290: s3 = strchr(s2, *s1); /* for scanning the second string */
2291:
2292: if (NULL == s3) /* found no middle delimiter */
2293: goto out;
2294:
2295: while ('\0' != *++s3) {
2296: if (*s2 != *s3) { /* mismatch */
2297: s3 = strchr(s3, *s1);
2298: break;
2299: }
2300: if (*s3 == *s1) { /* found the final delimiter */
2301: match = 1;
2302: break;
2303: }
2304: s2++;
2305: }
2306:
2307: out:
2308: if (NULL == s3)
2309: s3 = strchr(s2, '\0');
1.242 schwarze 2310: else if (*s3 != '\0')
1.198 schwarze 2311: s3++;
2312: *pos = s3 - v;
1.277 schwarze 2313: return match;
1.198 schwarze 2314: }
2315:
1.204 schwarze 2316: /*
2317: * Evaluate an optionally negated single character, numerical,
2318: * or string condition.
2319: */
1.198 schwarze 2320: static int
1.271 schwarze 2321: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.88 kristaps 2322: {
1.336 schwarze 2323: const char *start, *end;
2324: char *cp, *name;
2325: size_t sz;
2326: int deftype, len, number, savepos, istrue, wanttrue;
1.88 kristaps 2327:
1.198 schwarze 2328: if ('!' == v[*pos]) {
2329: wanttrue = 0;
2330: (*pos)++;
2331: } else
2332: wanttrue = 1;
2333:
1.88 kristaps 2334: switch (v[*pos]) {
1.240 schwarze 2335: case '\0':
1.277 schwarze 2336: return 0;
1.207 schwarze 2337: case 'n':
2338: case 'o':
1.88 kristaps 2339: (*pos)++;
1.277 schwarze 2340: return wanttrue;
1.207 schwarze 2341: case 'e':
2342: case 't':
1.239 schwarze 2343: case 'v':
1.88 kristaps 2344: (*pos)++;
1.277 schwarze 2345: return !wanttrue;
1.336 schwarze 2346: case 'c':
2347: do {
2348: (*pos)++;
2349: } while (v[*pos] == ' ');
2350:
2351: /*
2352: * Quirk for groff compatibility:
2353: * The horizontal tab is neither available nor unavailable.
2354: */
2355:
2356: if (v[*pos] == '\t') {
2357: (*pos)++;
2358: return 0;
2359: }
2360:
2361: /* Printable ASCII characters are available. */
2362:
2363: if (v[*pos] != '\\') {
2364: (*pos)++;
2365: return wanttrue;
2366: }
2367:
2368: end = v + ++*pos;
2369: switch (mandoc_escape(&end, &start, &len)) {
2370: case ESCAPE_SPECIAL:
2371: istrue = mchars_spec2cp(start, len) != -1;
2372: break;
2373: case ESCAPE_UNICODE:
2374: istrue = 1;
2375: break;
2376: case ESCAPE_NUMBERED:
2377: istrue = mchars_num2char(start, len) != -1;
2378: break;
2379: default:
2380: istrue = !wanttrue;
2381: break;
2382: }
2383: *pos = end - v;
2384: return istrue == wanttrue;
1.310 schwarze 2385: case 'd':
1.271 schwarze 2386: case 'r':
1.310 schwarze 2387: cp = v + *pos + 1;
2388: while (*cp == ' ')
2389: cp++;
2390: name = cp;
2391: sz = roff_getname(r, &cp, ln, cp - v);
1.315 schwarze 2392: if (sz == 0)
2393: istrue = 0;
2394: else if (v[*pos] == 'r')
2395: istrue = roff_hasregn(r, name, sz);
2396: else {
2397: deftype = ROFFDEF_ANY;
2398: roff_getstrn(r, name, sz, &deftype);
2399: istrue = !!deftype;
2400: }
1.271 schwarze 2401: *pos = cp - v;
1.310 schwarze 2402: return istrue == wanttrue;
1.88 kristaps 2403: default:
2404: break;
2405: }
2406:
1.241 schwarze 2407: savepos = *pos;
1.261 schwarze 2408: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.277 schwarze 2409: return (number > 0) == wanttrue;
1.241 schwarze 2410: else if (*pos == savepos)
1.277 schwarze 2411: return roff_evalstrcond(v, pos) == wanttrue;
1.204 schwarze 2412: else
1.277 schwarze 2413: return 0;
1.88 kristaps 2414: }
2415:
1.340 schwarze 2416: static int
1.103 kristaps 2417: roff_line_ignore(ROFF_ARGS)
1.89 kristaps 2418: {
1.123 schwarze 2419:
1.277 schwarze 2420: return ROFF_IGN;
1.89 kristaps 2421: }
2422:
1.340 schwarze 2423: static int
1.251 schwarze 2424: roff_insec(ROFF_ARGS)
2425: {
2426:
1.350 schwarze 2427: mandoc_msg(MANDOCERR_REQ_INSEC, ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2428: return ROFF_IGN;
1.251 schwarze 2429: }
2430:
1.340 schwarze 2431: static int
1.251 schwarze 2432: roff_unsupp(ROFF_ARGS)
2433: {
2434:
1.350 schwarze 2435: mandoc_msg(MANDOCERR_REQ_UNSUPP, ln, ppos, "%s", roff_name[tok]);
1.277 schwarze 2436: return ROFF_IGN;
1.251 schwarze 2437: }
2438:
1.340 schwarze 2439: static int
1.82 kristaps 2440: roff_cond(ROFF_ARGS)
1.74 kristaps 2441: {
1.340 schwarze 2442: int irc;
1.173 schwarze 2443:
2444: roffnode_push(r, tok, NULL, ln, ppos);
1.74 kristaps 2445:
1.207 schwarze 2446: /*
1.134 kristaps 2447: * An `.el' has no conditional body: it will consume the value
2448: * of the current rstack entry set in prior `ie' calls or
1.207 schwarze 2449: * defaults to DENY.
1.134 kristaps 2450: *
2451: * If we're not an `el', however, then evaluate the conditional.
2452: */
1.133 kristaps 2453:
1.238 schwarze 2454: r->last->rule = tok == ROFF_el ?
1.207 schwarze 2455: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.238 schwarze 2456: roff_evalcond(r, ln, buf->buf, &pos);
1.77 kristaps 2457:
1.134 kristaps 2458: /*
2459: * An if-else will put the NEGATION of the current evaluated
2460: * conditional into the stack of rules.
2461: */
2462:
1.238 schwarze 2463: if (tok == ROFF_ie) {
1.223 schwarze 2464: if (r->rstackpos + 1 == r->rstacksz) {
2465: r->rstacksz += 16;
2466: r->rstack = mandoc_reallocarray(r->rstack,
2467: r->rstacksz, sizeof(int));
1.134 kristaps 2468: }
1.198 schwarze 2469: r->rstack[++r->rstackpos] = !r->last->rule;
1.82 kristaps 2470: }
1.88 kristaps 2471:
2472: /* If the parent has false as its rule, then so do we. */
2473:
1.198 schwarze 2474: if (r->last->parent && !r->last->parent->rule)
2475: r->last->rule = 0;
1.88 kristaps 2476:
2477: /*
1.173 schwarze 2478: * Determine scope.
2479: * If there is nothing on the line after the conditional,
2480: * not even whitespace, use next-line scope.
1.340 schwarze 2481: * Except that .while does not support next-line scope.
1.88 kristaps 2482: */
1.74 kristaps 2483:
1.340 schwarze 2484: if (buf->buf[pos] == '\0' && tok != ROFF_while) {
1.173 schwarze 2485: r->last->endspan = 2;
2486: goto out;
2487: }
2488:
1.238 schwarze 2489: while (buf->buf[pos] == ' ')
1.173 schwarze 2490: pos++;
2491:
2492: /* An opening brace requests multiline scope. */
1.75 kristaps 2493:
1.238 schwarze 2494: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.75 kristaps 2495: r->last->endspan = -1;
2496: pos += 2;
1.272 schwarze 2497: while (buf->buf[pos] == ' ')
2498: pos++;
1.173 schwarze 2499: goto out;
1.207 schwarze 2500: }
1.74 kristaps 2501:
1.77 kristaps 2502: /*
1.173 schwarze 2503: * Anything else following the conditional causes
2504: * single-line scope. Warn if the scope contains
2505: * nothing but trailing whitespace.
1.77 kristaps 2506: */
2507:
1.238 schwarze 2508: if (buf->buf[pos] == '\0')
1.350 schwarze 2509: mandoc_msg(MANDOCERR_COND_EMPTY,
2510: ln, ppos, "%s", roff_name[tok]);
1.77 kristaps 2511:
1.173 schwarze 2512: r->last->endspan = 1;
1.74 kristaps 2513:
1.173 schwarze 2514: out:
1.75 kristaps 2515: *offs = pos;
1.340 schwarze 2516: irc = ROFF_RERUN;
2517: if (tok == ROFF_while)
2518: irc |= ROFF_WHILE;
2519: return irc;
1.83 schwarze 2520: }
2521:
1.340 schwarze 2522: static int
1.92 schwarze 2523: roff_ds(ROFF_ARGS)
2524: {
1.212 schwarze 2525: char *string;
2526: const char *name;
2527: size_t namesz;
1.96 kristaps 2528:
1.251 schwarze 2529: /* Ignore groff compatibility mode for now. */
2530:
2531: if (tok == ROFF_ds1)
2532: tok = ROFF_ds;
2533: else if (tok == ROFF_as1)
2534: tok = ROFF_as;
2535:
1.96 kristaps 2536: /*
1.212 schwarze 2537: * The first word is the name of the string.
2538: * If it is empty or terminated by an escape sequence,
2539: * abort the `ds' request without defining anything.
1.96 kristaps 2540: */
1.92 schwarze 2541:
1.238 schwarze 2542: name = string = buf->buf + pos;
2543: if (*name == '\0')
1.277 schwarze 2544: return ROFF_IGN;
1.92 schwarze 2545:
1.212 schwarze 2546: namesz = roff_getname(r, &string, ln, pos);
1.238 schwarze 2547: if (name[namesz] == '\\')
1.277 schwarze 2548: return ROFF_IGN;
1.212 schwarze 2549:
2550: /* Read past the initial double-quote, if any. */
1.238 schwarze 2551: if (*string == '"')
1.92 schwarze 2552: string++;
2553:
1.96 kristaps 2554: /* The rest is the value. */
1.212 schwarze 2555: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2556: ROFF_as == tok);
1.311 schwarze 2557: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.277 schwarze 2558: return ROFF_IGN;
1.92 schwarze 2559: }
2560:
1.204 schwarze 2561: /*
2562: * Parse a single operator, one or two characters long.
2563: * If the operator is recognized, return success and advance the
2564: * parse point, else return failure and let the parse point unchanged.
2565: */
2566: static int
2567: roff_getop(const char *v, int *pos, char *res)
2568: {
2569:
2570: *res = v[*pos];
2571:
2572: switch (*res) {
1.207 schwarze 2573: case '+':
2574: case '-':
2575: case '*':
2576: case '/':
2577: case '%':
2578: case '&':
2579: case ':':
1.204 schwarze 2580: break;
2581: case '<':
2582: switch (v[*pos + 1]) {
1.207 schwarze 2583: case '=':
1.204 schwarze 2584: *res = 'l';
2585: (*pos)++;
2586: break;
1.207 schwarze 2587: case '>':
1.204 schwarze 2588: *res = '!';
2589: (*pos)++;
2590: break;
1.207 schwarze 2591: case '?':
1.204 schwarze 2592: *res = 'i';
2593: (*pos)++;
2594: break;
2595: default:
2596: break;
2597: }
2598: break;
2599: case '>':
2600: switch (v[*pos + 1]) {
1.207 schwarze 2601: case '=':
1.204 schwarze 2602: *res = 'g';
2603: (*pos)++;
2604: break;
1.207 schwarze 2605: case '?':
1.204 schwarze 2606: *res = 'a';
2607: (*pos)++;
2608: break;
2609: default:
2610: break;
2611: }
2612: break;
2613: case '=':
2614: if ('=' == v[*pos + 1])
2615: (*pos)++;
2616: break;
2617: default:
1.277 schwarze 2618: return 0;
1.204 schwarze 2619: }
2620: (*pos)++;
2621:
1.277 schwarze 2622: return *res;
1.204 schwarze 2623: }
2624:
2625: /*
2626: * Evaluate either a parenthesized numeric expression
2627: * or a single signed integer number.
2628: */
2629: static int
1.235 schwarze 2630: roff_evalpar(struct roff *r, int ln,
1.261 schwarze 2631: const char *v, int *pos, int *res, int flags)
1.204 schwarze 2632: {
2633:
2634: if ('(' != v[*pos])
1.277 schwarze 2635: return roff_getnum(v, pos, res, flags);
1.204 schwarze 2636:
2637: (*pos)++;
1.261 schwarze 2638: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.277 schwarze 2639: return 0;
1.204 schwarze 2640:
1.206 schwarze 2641: /*
2642: * Omission of the closing parenthesis
2643: * is an error in validation mode,
2644: * but ignored in evaluation mode.
2645: */
2646:
1.204 schwarze 2647: if (')' == v[*pos])
2648: (*pos)++;
1.206 schwarze 2649: else if (NULL == res)
1.277 schwarze 2650: return 0;
1.204 schwarze 2651:
1.277 schwarze 2652: return 1;
1.204 schwarze 2653: }
2654:
2655: /*
2656: * Evaluate a complete numeric expression.
2657: * Proceed left to right, there is no concept of precedence.
2658: */
2659: static int
1.235 schwarze 2660: roff_evalnum(struct roff *r, int ln, const char *v,
1.261 schwarze 2661: int *pos, int *res, int flags)
1.204 schwarze 2662: {
2663: int mypos, operand2;
2664: char operator;
2665:
2666: if (NULL == pos) {
2667: mypos = 0;
2668: pos = &mypos;
2669: }
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, res, flags))
1.277 schwarze 2676: return 0;
1.204 schwarze 2677:
2678: while (1) {
1.261 schwarze 2679: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2680: while (isspace((unsigned char)v[*pos]))
2681: (*pos)++;
2682:
2683: if ( ! roff_getop(v, pos, &operator))
2684: break;
2685:
1.261 schwarze 2686: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2687: while (isspace((unsigned char)v[*pos]))
2688: (*pos)++;
2689:
1.261 schwarze 2690: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.277 schwarze 2691: return 0;
1.204 schwarze 2692:
1.261 schwarze 2693: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2694: while (isspace((unsigned char)v[*pos]))
2695: (*pos)++;
1.206 schwarze 2696:
2697: if (NULL == res)
2698: continue;
1.204 schwarze 2699:
2700: switch (operator) {
1.207 schwarze 2701: case '+':
1.204 schwarze 2702: *res += operand2;
2703: break;
1.207 schwarze 2704: case '-':
1.204 schwarze 2705: *res -= operand2;
2706: break;
1.207 schwarze 2707: case '*':
1.204 schwarze 2708: *res *= operand2;
2709: break;
1.207 schwarze 2710: case '/':
1.244 schwarze 2711: if (operand2 == 0) {
1.235 schwarze 2712: mandoc_msg(MANDOCERR_DIVZERO,
1.350 schwarze 2713: ln, *pos, "%s", v);
1.234 kristaps 2714: *res = 0;
2715: break;
2716: }
1.204 schwarze 2717: *res /= operand2;
2718: break;
1.207 schwarze 2719: case '%':
1.244 schwarze 2720: if (operand2 == 0) {
2721: mandoc_msg(MANDOCERR_DIVZERO,
1.350 schwarze 2722: ln, *pos, "%s", v);
1.244 schwarze 2723: *res = 0;
2724: break;
2725: }
1.204 schwarze 2726: *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 'l':
1.204 schwarze 2735: *res = *res <= operand2;
2736: break;
1.207 schwarze 2737: case 'g':
1.204 schwarze 2738: *res = *res >= operand2;
2739: break;
1.207 schwarze 2740: case '=':
1.204 schwarze 2741: *res = *res == operand2;
2742: break;
1.207 schwarze 2743: case '!':
1.204 schwarze 2744: *res = *res != operand2;
2745: break;
1.207 schwarze 2746: case '&':
1.204 schwarze 2747: *res = *res && operand2;
2748: break;
1.207 schwarze 2749: case ':':
1.204 schwarze 2750: *res = *res || operand2;
2751: break;
1.207 schwarze 2752: case 'i':
1.204 schwarze 2753: if (operand2 < *res)
2754: *res = operand2;
2755: break;
1.207 schwarze 2756: case 'a':
1.204 schwarze 2757: if (operand2 > *res)
2758: *res = operand2;
2759: break;
2760: default:
2761: abort();
2762: }
2763: }
1.277 schwarze 2764: return 1;
1.204 schwarze 2765: }
2766:
1.266 schwarze 2767: /* --- register management ------------------------------------------------ */
2768:
1.180 schwarze 2769: void
1.187 schwarze 2770: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.147 kristaps 2771: {
1.327 schwarze 2772: roff_setregn(r, name, strlen(name), val, sign, INT_MIN);
1.326 schwarze 2773: }
2774:
2775: static void
2776: roff_setregn(struct roff *r, const char *name, size_t len,
1.327 schwarze 2777: int val, char sign, int step)
1.326 schwarze 2778: {
1.180 schwarze 2779: struct roffreg *reg;
2780:
2781: /* Search for an existing register with the same name. */
2782: reg = r->regtab;
2783:
1.326 schwarze 2784: while (reg != NULL && (reg->key.sz != len ||
2785: strncmp(reg->key.p, name, len) != 0))
1.180 schwarze 2786: reg = reg->next;
1.147 kristaps 2787:
1.180 schwarze 2788: if (NULL == reg) {
2789: /* Create a new register. */
2790: reg = mandoc_malloc(sizeof(struct roffreg));
1.326 schwarze 2791: reg->key.p = mandoc_strndup(name, len);
2792: reg->key.sz = len;
1.187 schwarze 2793: reg->val = 0;
1.327 schwarze 2794: reg->step = 0;
1.180 schwarze 2795: reg->next = r->regtab;
2796: r->regtab = reg;
2797: }
2798:
1.187 schwarze 2799: if ('+' == sign)
2800: reg->val += val;
2801: else if ('-' == sign)
2802: reg->val -= val;
2803: else
2804: reg->val = val;
1.327 schwarze 2805: if (step != INT_MIN)
2806: reg->step = step;
1.147 kristaps 2807: }
2808:
1.192 schwarze 2809: /*
2810: * Handle some predefined read-only number registers.
2811: * For now, return -1 if the requested register is not predefined;
2812: * in case a predefined read-only register having the value -1
2813: * were to turn up, another special value would have to be chosen.
2814: */
2815: static int
1.273 schwarze 2816: roff_getregro(const struct roff *r, const char *name)
1.192 schwarze 2817: {
2818:
2819: switch (*name) {
1.273 schwarze 2820: case '$': /* Number of arguments of the last macro evaluated. */
1.339 schwarze 2821: return r->mstackpos < 0 ? 0 : r->mstack[r->mstackpos].argc;
1.207 schwarze 2822: case 'A': /* ASCII approximation mode is always off. */
1.277 schwarze 2823: return 0;
1.207 schwarze 2824: case 'g': /* Groff compatibility mode is always on. */
1.277 schwarze 2825: return 1;
1.207 schwarze 2826: case 'H': /* Fixed horizontal resolution. */
1.277 schwarze 2827: return 24;
1.207 schwarze 2828: case 'j': /* Always adjust left margin only. */
1.277 schwarze 2829: return 0;
1.207 schwarze 2830: case 'T': /* Some output device is always defined. */
1.277 schwarze 2831: return 1;
1.207 schwarze 2832: case 'V': /* Fixed vertical resolution. */
1.277 schwarze 2833: return 40;
1.192 schwarze 2834: default:
1.277 schwarze 2835: return -1;
1.192 schwarze 2836: }
2837: }
2838:
1.181 schwarze 2839: int
1.326 schwarze 2840: roff_getreg(struct roff *r, const char *name)
1.147 kristaps 2841: {
1.327 schwarze 2842: return roff_getregn(r, name, strlen(name), '\0');
1.181 schwarze 2843: }
2844:
2845: static int
1.327 schwarze 2846: roff_getregn(struct roff *r, const char *name, size_t len, char sign)
1.181 schwarze 2847: {
2848: struct roffreg *reg;
1.192 schwarze 2849: int val;
2850:
2851: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2852: val = roff_getregro(r, name + 1);
1.192 schwarze 2853: if (-1 != val)
1.277 schwarze 2854: return val;
1.192 schwarze 2855: }
1.181 schwarze 2856:
1.327 schwarze 2857: for (reg = r->regtab; reg; reg = reg->next) {
1.181 schwarze 2858: if (len == reg->key.sz &&
1.327 schwarze 2859: 0 == strncmp(name, reg->key.p, len)) {
2860: switch (sign) {
2861: case '+':
2862: reg->val += reg->step;
2863: break;
2864: case '-':
2865: reg->val -= reg->step;
2866: break;
2867: default:
2868: break;
2869: }
1.277 schwarze 2870: return reg->val;
1.327 schwarze 2871: }
2872: }
1.271 schwarze 2873:
1.327 schwarze 2874: roff_setregn(r, name, len, 0, '\0', INT_MIN);
1.277 schwarze 2875: return 0;
1.271 schwarze 2876: }
2877:
2878: static int
2879: roff_hasregn(const struct roff *r, const char *name, size_t len)
2880: {
2881: struct roffreg *reg;
2882: int val;
2883:
2884: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2885: val = roff_getregro(r, name + 1);
1.271 schwarze 2886: if (-1 != val)
1.277 schwarze 2887: return 1;
1.271 schwarze 2888: }
2889:
2890: for (reg = r->regtab; reg; reg = reg->next)
2891: if (len == reg->key.sz &&
2892: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2893: return 1;
1.147 kristaps 2894:
1.277 schwarze 2895: return 0;
1.147 kristaps 2896: }
2897:
1.180 schwarze 2898: static void
2899: roff_freereg(struct roffreg *reg)
1.147 kristaps 2900: {
1.180 schwarze 2901: struct roffreg *old_reg;
1.147 kristaps 2902:
1.180 schwarze 2903: while (NULL != reg) {
2904: free(reg->key.p);
2905: old_reg = reg;
2906: reg = reg->next;
2907: free(old_reg);
2908: }
1.147 kristaps 2909: }
1.92 schwarze 2910:
1.340 schwarze 2911: static int
1.89 kristaps 2912: roff_nr(ROFF_ARGS)
1.83 schwarze 2913: {
1.327 schwarze 2914: char *key, *val, *step;
1.212 schwarze 2915: size_t keysz;
1.327 schwarze 2916: int iv, is, len;
1.187 schwarze 2917: char sign;
1.89 kristaps 2918:
1.238 schwarze 2919: key = val = buf->buf + pos;
2920: if (*key == '\0')
1.277 schwarze 2921: return ROFF_IGN;
1.212 schwarze 2922:
2923: keysz = roff_getname(r, &val, ln, pos);
1.238 schwarze 2924: if (key[keysz] == '\\')
1.277 schwarze 2925: return ROFF_IGN;
1.89 kristaps 2926:
1.187 schwarze 2927: sign = *val;
1.238 schwarze 2928: if (sign == '+' || sign == '-')
1.187 schwarze 2929: val++;
2930:
1.327 schwarze 2931: len = 0;
2932: if (roff_evalnum(r, ln, val, &len, &iv, ROFFNUM_SCALE) == 0)
2933: return ROFF_IGN;
2934:
2935: step = val + len;
2936: while (isspace((unsigned char)*step))
2937: step++;
2938: if (roff_evalnum(r, ln, step, NULL, &is, 0) == 0)
2939: is = INT_MIN;
1.109 kristaps 2940:
1.327 schwarze 2941: roff_setregn(r, key, keysz, iv, sign, is);
1.277 schwarze 2942: return ROFF_IGN;
1.203 schwarze 2943: }
2944:
1.340 schwarze 2945: static int
1.203 schwarze 2946: roff_rr(ROFF_ARGS)
2947: {
2948: struct roffreg *reg, **prev;
1.212 schwarze 2949: char *name, *cp;
2950: size_t namesz;
1.203 schwarze 2951:
1.238 schwarze 2952: name = cp = buf->buf + pos;
2953: if (*name == '\0')
1.277 schwarze 2954: return ROFF_IGN;
1.212 schwarze 2955: namesz = roff_getname(r, &cp, ln, pos);
2956: name[namesz] = '\0';
1.203 schwarze 2957:
2958: prev = &r->regtab;
2959: while (1) {
2960: reg = *prev;
1.238 schwarze 2961: if (reg == NULL || !strcmp(name, reg->key.p))
1.203 schwarze 2962: break;
2963: prev = ®->next;
2964: }
1.238 schwarze 2965: if (reg != NULL) {
1.203 schwarze 2966: *prev = reg->next;
2967: free(reg->key.p);
2968: free(reg);
2969: }
1.277 schwarze 2970: return ROFF_IGN;
1.122 schwarze 2971: }
2972:
1.266 schwarze 2973: /* --- handler functions for roff requests -------------------------------- */
2974:
1.340 schwarze 2975: static int
1.122 schwarze 2976: roff_rm(ROFF_ARGS)
2977: {
2978: const char *name;
2979: char *cp;
1.212 schwarze 2980: size_t namesz;
1.122 schwarze 2981:
1.238 schwarze 2982: cp = buf->buf + pos;
2983: while (*cp != '\0') {
1.212 schwarze 2984: name = cp;
1.238 schwarze 2985: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.212 schwarze 2986: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.311 schwarze 2987: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.238 schwarze 2988: if (name[namesz] == '\\')
1.212 schwarze 2989: break;
1.122 schwarze 2990: }
1.277 schwarze 2991: return ROFF_IGN;
1.178 schwarze 2992: }
2993:
1.340 schwarze 2994: static int
1.178 schwarze 2995: roff_it(ROFF_ARGS)
2996: {
2997: int iv;
2998:
2999: /* Parse the number of lines. */
1.261 schwarze 3000:
3001: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.350 schwarze 3002: mandoc_msg(MANDOCERR_IT_NONUM,
3003: ln, ppos, "%s", buf->buf + 1);
1.277 schwarze 3004: return ROFF_IGN;
1.178 schwarze 3005: }
3006:
1.262 schwarze 3007: while (isspace((unsigned char)buf->buf[pos]))
3008: pos++;
3009:
3010: /*
3011: * Arm the input line trap.
3012: * Special-casing "an-trap" is an ugly workaround to cope
3013: * with DocBook stupidly fiddling with man(7) internals.
3014: */
1.261 schwarze 3015:
1.178 schwarze 3016: roffit_lines = iv;
1.262 schwarze 3017: roffit_macro = mandoc_strdup(iv != 1 ||
3018: strcmp(buf->buf + pos, "an-trap") ?
3019: buf->buf + pos : "br");
1.277 schwarze 3020: return ROFF_IGN;
1.175 schwarze 3021: }
3022:
1.340 schwarze 3023: static int
1.175 schwarze 3024: roff_Dd(ROFF_ARGS)
3025: {
1.315 schwarze 3026: int mask;
3027: enum roff_tok t, te;
1.227 schwarze 3028:
1.315 schwarze 3029: switch (tok) {
3030: case ROFF_Dd:
3031: tok = MDOC_Dd;
3032: te = MDOC_MAX;
3033: if (r->format == 0)
3034: r->format = MPARSE_MDOC;
3035: mask = MPARSE_MDOC | MPARSE_QUICK;
3036: break;
3037: case ROFF_TH:
3038: tok = MAN_TH;
3039: te = MAN_MAX;
3040: if (r->format == 0)
3041: r->format = MPARSE_MAN;
3042: mask = MPARSE_QUICK;
3043: break;
3044: default:
3045: abort();
3046: }
3047: if ((r->options & mask) == 0)
3048: for (t = tok; t < te; t++)
3049: roff_setstr(r, roff_name[t], NULL, 0);
1.277 schwarze 3050: return ROFF_CONT;
1.109 kristaps 3051: }
3052:
1.340 schwarze 3053: static int
1.109 kristaps 3054: roff_TE(ROFF_ARGS)
3055: {
1.321 schwarze 3056: if (r->tbl == NULL) {
1.350 schwarze 3057: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "TE");
1.321 schwarze 3058: return ROFF_IGN;
3059: }
1.346 schwarze 3060: if (tbl_end(r->tbl, 0) == 0) {
1.321 schwarze 3061: r->tbl = NULL;
1.258 schwarze 3062: free(buf->buf);
3063: buf->buf = mandoc_strdup(".sp");
3064: buf->sz = 4;
1.329 schwarze 3065: *offs = 0;
1.277 schwarze 3066: return ROFF_REPARSE;
1.258 schwarze 3067: }
1.321 schwarze 3068: r->tbl = NULL;
1.277 schwarze 3069: return ROFF_IGN;
1.112 kristaps 3070: }
3071:
1.340 schwarze 3072: static int
1.112 kristaps 3073: roff_T_(ROFF_ARGS)
3074: {
3075:
3076: if (NULL == r->tbl)
1.350 schwarze 3077: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "T&");
1.112 kristaps 3078: else
1.296 schwarze 3079: tbl_restart(ln, ppos, r->tbl);
1.112 kristaps 3080:
1.277 schwarze 3081: return ROFF_IGN;
1.109 kristaps 3082: }
3083:
1.230 schwarze 3084: /*
3085: * Handle in-line equation delimiters.
3086: */
1.340 schwarze 3087: static int
1.238 schwarze 3088: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.151 kristaps 3089: {
1.233 schwarze 3090: char *cp1, *cp2;
3091: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.151 kristaps 3092:
1.230 schwarze 3093: /*
3094: * Outside equations, look for an opening delimiter.
3095: * If we are inside an equation, we already know it is
3096: * in-line, or this function wouldn't have been called;
3097: * so look for a closing delimiter.
3098: */
3099:
1.238 schwarze 3100: cp1 = buf->buf + pos;
1.230 schwarze 3101: cp2 = strchr(cp1, r->eqn == NULL ?
3102: r->last_eqn->odelim : r->last_eqn->cdelim);
3103: if (cp2 == NULL)
1.277 schwarze 3104: return ROFF_CONT;
1.230 schwarze 3105:
1.233 schwarze 3106: *cp2++ = '\0';
3107: bef_pr = bef_nl = aft_nl = aft_pr = "";
3108:
3109: /* Handle preceding text, protecting whitespace. */
3110:
1.238 schwarze 3111: if (*buf->buf != '\0') {
1.233 schwarze 3112: if (r->eqn == NULL)
3113: bef_pr = "\\&";
3114: bef_nl = "\n";
3115: }
3116:
3117: /*
3118: * Prepare replacing the delimiter with an equation macro
3119: * and drop leading white space from the equation.
3120: */
1.230 schwarze 3121:
1.233 schwarze 3122: if (r->eqn == NULL) {
3123: while (*cp2 == ' ')
3124: cp2++;
3125: mac = ".EQ";
3126: } else
3127: mac = ".EN";
3128:
3129: /* Handle following text, protecting whitespace. */
3130:
3131: if (*cp2 != '\0') {
3132: aft_nl = "\n";
3133: if (r->eqn != NULL)
3134: aft_pr = "\\&";
3135: }
3136:
3137: /* Do the actual replacement. */
3138:
1.238 schwarze 3139: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.233 schwarze 3140: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.238 schwarze 3141: free(buf->buf);
3142: buf->buf = cp1;
1.230 schwarze 3143:
3144: /* Toggle the in-line state of the eqn subsystem. */
3145:
3146: r->eqn_inline = r->eqn == NULL;
1.277 schwarze 3147: return ROFF_REPARSE;
1.151 kristaps 3148: }
3149:
1.340 schwarze 3150: static int
1.235 schwarze 3151: roff_EQ(ROFF_ARGS)
1.125 kristaps 3152: {
1.319 schwarze 3153: struct roff_node *n;
3154:
1.322 schwarze 3155: if (r->man->macroset == MACROSET_MAN)
3156: man_breakscope(r->man, ROFF_EQ);
1.319 schwarze 3157: n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
3158: if (ln > r->man->last->line)
3159: n->flags |= NODE_LINE;
1.348 schwarze 3160: n->eqn = eqn_box_new();
1.319 schwarze 3161: roff_node_append(r->man, n);
3162: r->man->next = ROFF_NEXT_SIBLING;
1.125 kristaps 3163:
1.238 schwarze 3164: assert(r->eqn == NULL);
1.319 schwarze 3165: if (r->last_eqn == NULL)
1.351 schwarze 3166: r->last_eqn = eqn_alloc();
1.319 schwarze 3167: else
3168: eqn_reset(r->last_eqn);
3169: r->eqn = r->last_eqn;
3170: r->eqn->node = n;
1.151 kristaps 3171:
1.238 schwarze 3172: if (buf->buf[pos] != '\0')
1.350 schwarze 3173: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.238 schwarze 3174: ".EQ %s", buf->buf + pos);
1.151 kristaps 3175:
1.277 schwarze 3176: return ROFF_IGN;
1.125 kristaps 3177: }
3178:
1.340 schwarze 3179: static int
1.125 kristaps 3180: roff_EN(ROFF_ARGS)
3181: {
1.319 schwarze 3182: if (r->eqn != NULL) {
3183: eqn_parse(r->eqn);
3184: r->eqn = NULL;
3185: } else
1.350 schwarze 3186: mandoc_msg(MANDOCERR_BLK_NOTOPEN, ln, ppos, "EN");
1.319 schwarze 3187: if (buf->buf[pos] != '\0')
1.350 schwarze 3188: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.319 schwarze 3189: "EN %s", buf->buf + pos);
1.277 schwarze 3190: return ROFF_IGN;
1.125 kristaps 3191: }
3192:
1.340 schwarze 3193: static int
1.109 kristaps 3194: roff_TS(ROFF_ARGS)
3195: {
1.321 schwarze 3196: if (r->tbl != NULL) {
1.350 schwarze 3197: mandoc_msg(MANDOCERR_BLK_BROKEN, ln, ppos, "TS breaks TS");
1.346 schwarze 3198: tbl_end(r->tbl, 0);
1.115 kristaps 3199: }
1.351 schwarze 3200: r->tbl = tbl_alloc(ppos, ln, r->last_tbl);
1.346 schwarze 3201: if (r->last_tbl == NULL)
1.321 schwarze 3202: r->first_tbl = r->tbl;
3203: r->last_tbl = r->tbl;
1.297 schwarze 3204: return ROFF_IGN;
3205: }
3206:
1.340 schwarze 3207: static int
1.297 schwarze 3208: roff_onearg(ROFF_ARGS)
3209: {
3210: struct roff_node *n;
3211: char *cp;
1.305 schwarze 3212: int npos;
1.297 schwarze 3213:
1.302 schwarze 3214: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
1.320 schwarze 3215: (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
3216: tok == ROFF_ti))
1.302 schwarze 3217: man_breakscope(r->man, tok);
3218:
1.309 schwarze 3219: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.305 schwarze 3220: r->man->last = roffce_node;
3221: r->man->next = ROFF_NEXT_SIBLING;
3222: }
3223:
1.297 schwarze 3224: roff_elem_alloc(r->man, ln, ppos, tok);
3225: n = r->man->last;
3226:
3227: cp = buf->buf + pos;
3228: if (*cp != '\0') {
3229: while (*cp != '\0' && *cp != ' ')
3230: cp++;
3231: while (*cp == ' ')
3232: *cp++ = '\0';
3233: if (*cp != '\0')
1.350 schwarze 3234: mandoc_msg(MANDOCERR_ARG_EXCESS,
3235: ln, (int)(cp - buf->buf),
1.297 schwarze 3236: "%s ... %s", roff_name[tok], cp);
3237: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.300 schwarze 3238: }
3239:
1.309 schwarze 3240: if (tok == ROFF_ce || tok == ROFF_rj) {
3241: if (r->man->last->type == ROFFT_ELEM) {
1.305 schwarze 3242: roff_word_alloc(r->man, ln, pos, "1");
3243: r->man->last->flags |= NODE_NOSRC;
3244: }
3245: npos = 0;
3246: if (roff_evalnum(r, ln, r->man->last->string, &npos,
3247: &roffce_lines, 0) == 0) {
1.350 schwarze 3248: mandoc_msg(MANDOCERR_CE_NONUM,
3249: ln, pos, "ce %s", buf->buf + pos);
1.305 schwarze 3250: roffce_lines = 1;
3251: }
3252: if (roffce_lines < 1) {
3253: r->man->last = r->man->last->parent;
3254: roffce_node = NULL;
3255: roffce_lines = 0;
3256: } else
3257: roffce_node = r->man->last->parent;
3258: } else {
3259: n->flags |= NODE_VALID | NODE_ENDED;
3260: r->man->last = n;
3261: }
3262: n->flags |= NODE_LINE;
1.300 schwarze 3263: r->man->next = ROFF_NEXT_SIBLING;
3264: return ROFF_IGN;
3265: }
3266:
1.340 schwarze 3267: static int
1.300 schwarze 3268: roff_manyarg(ROFF_ARGS)
3269: {
3270: struct roff_node *n;
3271: char *sp, *ep;
3272:
3273: roff_elem_alloc(r->man, ln, ppos, tok);
3274: n = r->man->last;
3275:
3276: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
3277: while (*ep != '\0' && *ep != ' ')
3278: ep++;
3279: while (*ep == ' ')
3280: *ep++ = '\0';
3281: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.297 schwarze 3282: }
3283:
3284: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3285: r->man->last = n;
3286: r->man->next = ROFF_NEXT_SIBLING;
1.277 schwarze 3287: return ROFF_IGN;
1.251 schwarze 3288: }
3289:
1.340 schwarze 3290: static int
1.311 schwarze 3291: roff_als(ROFF_ARGS)
3292: {
3293: char *oldn, *newn, *end, *value;
3294: size_t oldsz, newsz, valsz;
3295:
3296: newn = oldn = buf->buf + pos;
3297: if (*newn == '\0')
3298: return ROFF_IGN;
3299:
3300: newsz = roff_getname(r, &oldn, ln, pos);
3301: if (newn[newsz] == '\\' || *oldn == '\0')
3302: return ROFF_IGN;
3303:
3304: end = oldn;
3305: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3306: if (oldsz == 0)
3307: return ROFF_IGN;
3308:
1.338 schwarze 3309: valsz = mandoc_asprintf(&value, ".%.*s \\$@\\\"\n",
1.315 schwarze 3310: (int)oldsz, oldn);
1.311 schwarze 3311: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3312: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3313: free(value);
3314: return ROFF_IGN;
3315: }
3316:
1.340 schwarze 3317: static int
1.296 schwarze 3318: roff_br(ROFF_ARGS)
1.251 schwarze 3319: {
1.302 schwarze 3320: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3321: man_breakscope(r->man, ROFF_br);
1.296 schwarze 3322: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
3323: if (buf->buf[pos] != '\0')
1.350 schwarze 3324: mandoc_msg(MANDOCERR_ARG_SKIP, ln, pos,
1.296 schwarze 3325: "%s %s", roff_name[tok], buf->buf + pos);
3326: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3327: r->man->next = ROFF_NEXT_SIBLING;
3328: return ROFF_IGN;
1.92 schwarze 3329: }
3330:
1.340 schwarze 3331: static int
1.174 kristaps 3332: roff_cc(ROFF_ARGS)
3333: {
3334: const char *p;
3335:
1.238 schwarze 3336: p = buf->buf + pos;
1.174 kristaps 3337:
1.238 schwarze 3338: if (*p == '\0' || (r->control = *p++) == '.')
1.303 schwarze 3339: r->control = '\0';
1.174 kristaps 3340:
1.238 schwarze 3341: if (*p != '\0')
1.350 schwarze 3342: mandoc_msg(MANDOCERR_ARG_EXCESS,
1.260 schwarze 3343: ln, p - buf->buf, "cc ... %s", p);
1.174 kristaps 3344:
1.341 schwarze 3345: return ROFF_IGN;
3346: }
3347:
3348: static int
3349: roff_char(ROFF_ARGS)
3350: {
3351: const char *p, *kp, *vp;
3352: size_t ksz, vsz;
3353: int font;
3354:
3355: /* Parse the character to be replaced. */
3356:
3357: kp = buf->buf + pos;
3358: p = kp + 1;
3359: if (*kp == '\0' || (*kp == '\\' &&
3360: mandoc_escape(&p, NULL, NULL) != ESCAPE_SPECIAL) ||
3361: (*p != ' ' && *p != '\0')) {
1.350 schwarze 3362: mandoc_msg(MANDOCERR_CHAR_ARG, ln, pos, "char %s", kp);
1.341 schwarze 3363: return ROFF_IGN;
3364: }
3365: ksz = p - kp;
3366: while (*p == ' ')
3367: p++;
3368:
3369: /*
3370: * If the replacement string contains a font escape sequence,
3371: * we have to restore the font at the end.
3372: */
3373:
3374: vp = p;
3375: vsz = strlen(p);
3376: font = 0;
3377: while (*p != '\0') {
3378: if (*p++ != '\\')
3379: continue;
3380: switch (mandoc_escape(&p, NULL, NULL)) {
3381: case ESCAPE_FONT:
3382: case ESCAPE_FONTROMAN:
3383: case ESCAPE_FONTITALIC:
3384: case ESCAPE_FONTBOLD:
3385: case ESCAPE_FONTBI:
1.342 schwarze 3386: case ESCAPE_FONTCW:
1.341 schwarze 3387: case ESCAPE_FONTPREV:
3388: font++;
3389: break;
3390: default:
3391: break;
3392: }
3393: }
3394: if (font > 1)
1.350 schwarze 3395: mandoc_msg(MANDOCERR_CHAR_FONT,
3396: ln, (int)(vp - buf->buf), "%s", vp);
1.341 schwarze 3397:
3398: /*
3399: * Approximate the effect of .char using the .tr tables.
3400: * XXX In groff, .char and .tr interact differently.
3401: */
3402:
3403: if (ksz == 1) {
3404: if (r->xtab == NULL)
3405: r->xtab = mandoc_calloc(128, sizeof(*r->xtab));
3406: assert((unsigned int)*kp < 128);
3407: free(r->xtab[(int)*kp].p);
3408: r->xtab[(int)*kp].sz = mandoc_asprintf(&r->xtab[(int)*kp].p,
3409: "%s%s", vp, font ? "\fP" : "");
3410: } else {
3411: roff_setstrn(&r->xmbtab, kp, ksz, vp, vsz, 0);
3412: if (font)
3413: roff_setstrn(&r->xmbtab, kp, ksz, "\\fP", 3, 1);
3414: }
1.277 schwarze 3415: return ROFF_IGN;
1.174 kristaps 3416: }
3417:
1.340 schwarze 3418: static int
1.303 schwarze 3419: roff_ec(ROFF_ARGS)
3420: {
3421: const char *p;
3422:
3423: p = buf->buf + pos;
3424: if (*p == '\0')
3425: r->escape = '\\';
3426: else {
3427: r->escape = *p;
3428: if (*++p != '\0')
1.350 schwarze 3429: mandoc_msg(MANDOCERR_ARG_EXCESS, ln,
3430: (int)(p - buf->buf), "ec ... %s", p);
1.303 schwarze 3431: }
3432: return ROFF_IGN;
3433: }
3434:
1.340 schwarze 3435: static int
1.303 schwarze 3436: roff_eo(ROFF_ARGS)
3437: {
3438: r->escape = '\0';
3439: if (buf->buf[pos] != '\0')
1.350 schwarze 3440: mandoc_msg(MANDOCERR_ARG_SKIP,
1.303 schwarze 3441: ln, pos, "eo %s", buf->buf + pos);
3442: return ROFF_IGN;
1.330 schwarze 3443: }
3444:
1.340 schwarze 3445: static int
1.330 schwarze 3446: roff_nop(ROFF_ARGS)
3447: {
3448: while (buf->buf[pos] == ' ')
3449: pos++;
3450: *offs = pos;
3451: return ROFF_RERUN;
1.303 schwarze 3452: }
3453:
1.340 schwarze 3454: static int
1.164 kristaps 3455: roff_tr(ROFF_ARGS)
3456: {
3457: const char *p, *first, *second;
3458: size_t fsz, ssz;
3459: enum mandoc_esc esc;
3460:
1.238 schwarze 3461: p = buf->buf + pos;
1.164 kristaps 3462:
1.238 schwarze 3463: if (*p == '\0') {
1.350 schwarze 3464: mandoc_msg(MANDOCERR_REQ_EMPTY, ln, ppos, "tr");
1.277 schwarze 3465: return ROFF_IGN;
1.164 kristaps 3466: }
3467:
1.238 schwarze 3468: while (*p != '\0') {
1.164 kristaps 3469: fsz = ssz = 1;
3470:
3471: first = p++;
1.238 schwarze 3472: if (*first == '\\') {
1.164 kristaps 3473: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3474: if (esc == ESCAPE_ERROR) {
1.350 schwarze 3475: mandoc_msg(MANDOCERR_ESC_BAD, ln,
3476: (int)(p - buf->buf), "%s", first);
1.277 schwarze 3477: return ROFF_IGN;
1.164 kristaps 3478: }
3479: fsz = (size_t)(p - first);
3480: }
3481:
3482: second = p++;
1.238 schwarze 3483: if (*second == '\\') {
1.164 kristaps 3484: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3485: if (esc == ESCAPE_ERROR) {
1.350 schwarze 3486: mandoc_msg(MANDOCERR_ESC_BAD, ln,
3487: (int)(p - buf->buf), "%s", second);
1.277 schwarze 3488: return ROFF_IGN;
1.164 kristaps 3489: }
3490: ssz = (size_t)(p - second);
1.238 schwarze 3491: } else if (*second == '\0') {
1.350 schwarze 3492: mandoc_msg(MANDOCERR_TR_ODD, ln,
3493: (int)(first - buf->buf), "tr %s", first);
1.164 kristaps 3494: second = " ";
1.165 kristaps 3495: p--;
1.164 kristaps 3496: }
3497:
1.167 kristaps 3498: if (fsz > 1) {
1.207 schwarze 3499: roff_setstrn(&r->xmbtab, first, fsz,
3500: second, ssz, 0);
1.167 kristaps 3501: continue;
3502: }
3503:
1.238 schwarze 3504: if (r->xtab == NULL)
1.207 schwarze 3505: r->xtab = mandoc_calloc(128,
3506: sizeof(struct roffstr));
1.167 kristaps 3507:
3508: free(r->xtab[(int)*first].p);
3509: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3510: r->xtab[(int)*first].sz = ssz;
1.164 kristaps 3511: }
3512:
1.277 schwarze 3513: return ROFF_IGN;
1.164 kristaps 3514: }
3515:
1.339 schwarze 3516: /*
3517: * Implementation of the .return request.
3518: * There is no need to call roff_userret() from here.
3519: * The read module will call that after rewinding the reader stack
3520: * to the place from where the current macro was called.
3521: */
1.340 schwarze 3522: static int
1.339 schwarze 3523: roff_return(ROFF_ARGS)
3524: {
3525: if (r->mstackpos >= 0)
1.340 schwarze 3526: return ROFF_IGN | ROFF_USERRET;
1.339 schwarze 3527:
1.350 schwarze 3528: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "return");
1.339 schwarze 3529: return ROFF_IGN;
3530: }
3531:
1.340 schwarze 3532: static int
1.306 schwarze 3533: roff_rn(ROFF_ARGS)
3534: {
3535: const char *value;
3536: char *oldn, *newn, *end;
3537: size_t oldsz, newsz;
1.315 schwarze 3538: int deftype;
1.306 schwarze 3539:
3540: oldn = newn = buf->buf + pos;
3541: if (*oldn == '\0')
3542: return ROFF_IGN;
3543:
3544: oldsz = roff_getname(r, &newn, ln, pos);
3545: if (oldn[oldsz] == '\\' || *newn == '\0')
3546: return ROFF_IGN;
3547:
3548: end = newn;
3549: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3550: if (newsz == 0)
3551: return ROFF_IGN;
3552:
1.315 schwarze 3553: deftype = ROFFDEF_ANY;
3554: value = roff_getstrn(r, oldn, oldsz, &deftype);
3555: switch (deftype) {
3556: case ROFFDEF_USER:
1.306 schwarze 3557: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3558: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3559: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.315 schwarze 3560: break;
3561: case ROFFDEF_PRE:
3562: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3563: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3564: break;
3565: case ROFFDEF_REN:
1.306 schwarze 3566: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3567: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.315 schwarze 3568: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3569: break;
3570: case ROFFDEF_STD:
1.306 schwarze 3571: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.315 schwarze 3572: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3573: break;
3574: default:
3575: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3576: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3577: break;
3578: }
1.306 schwarze 3579: return ROFF_IGN;
3580: }
3581:
1.340 schwarze 3582: static int
1.339 schwarze 3583: roff_shift(ROFF_ARGS)
3584: {
3585: struct mctx *ctx;
3586: int levels, i;
3587:
3588: levels = 1;
3589: if (buf->buf[pos] != '\0' &&
3590: roff_evalnum(r, ln, buf->buf, &pos, &levels, 0) == 0) {
1.350 schwarze 3591: mandoc_msg(MANDOCERR_CE_NONUM,
1.339 schwarze 3592: ln, pos, "shift %s", buf->buf + pos);
3593: levels = 1;
3594: }
3595: if (r->mstackpos < 0) {
1.350 schwarze 3596: mandoc_msg(MANDOCERR_REQ_NOMAC, ln, ppos, "shift");
1.339 schwarze 3597: return ROFF_IGN;
3598: }
3599: ctx = r->mstack + r->mstackpos;
3600: if (levels > ctx->argc) {
1.350 schwarze 3601: mandoc_msg(MANDOCERR_SHIFT,
1.339 schwarze 3602: ln, pos, "%d, but max is %d", levels, ctx->argc);
3603: levels = ctx->argc;
3604: }
3605: if (levels == 0)
3606: return ROFF_IGN;
3607: for (i = 0; i < levels; i++)
3608: free(ctx->argv[i]);
3609: ctx->argc -= levels;
3610: for (i = 0; i < ctx->argc; i++)
3611: ctx->argv[i] = ctx->argv[i + levels];
3612: return ROFF_IGN;
3613: }
3614:
1.340 schwarze 3615: static int
1.105 kristaps 3616: roff_so(ROFF_ARGS)
3617: {
1.249 schwarze 3618: char *name, *cp;
1.105 kristaps 3619:
1.238 schwarze 3620: name = buf->buf + pos;
1.350 schwarze 3621: mandoc_msg(MANDOCERR_SO, ln, ppos, "so %s", name);
1.105 kristaps 3622:
3623: /*
3624: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3625: * opening anything that's not in our cwd or anything beneath
3626: * it. Thus, explicitly disallow traversing up the file-system
3627: * or using absolute paths.
3628: */
3629:
1.238 schwarze 3630: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.350 schwarze 3631: mandoc_msg(MANDOCERR_SO_PATH, ln, ppos, ".so %s", name);
1.249 schwarze 3632: buf->sz = mandoc_asprintf(&cp,
3633: ".sp\nSee the file %s.\n.sp", name) + 1;
3634: free(buf->buf);
3635: buf->buf = cp;
3636: *offs = 0;
1.277 schwarze 3637: return ROFF_REPARSE;
1.105 kristaps 3638: }
3639:
3640: *offs = pos;
1.277 schwarze 3641: return ROFF_SO;
1.105 kristaps 3642: }
1.92 schwarze 3643:
1.266 schwarze 3644: /* --- user defined strings and macros ------------------------------------ */
3645:
1.340 schwarze 3646: static int
1.106 kristaps 3647: roff_userdef(ROFF_ARGS)
1.99 kristaps 3648: {
1.339 schwarze 3649: struct mctx *ctx;
3650: char *arg, *ap, *dst, *src;
3651: size_t sz;
3652:
3653: /* Initialize a new macro stack context. */
3654:
3655: if (++r->mstackpos == r->mstacksz) {
3656: r->mstack = mandoc_recallocarray(r->mstack,
3657: r->mstacksz, r->mstacksz + 8, sizeof(*r->mstack));
3658: r->mstacksz += 8;
3659: }
3660: ctx = r->mstack + r->mstackpos;
3661: ctx->argsz = 0;
3662: ctx->argc = 0;
3663: ctx->argv = NULL;
3664:
3665: /*
3666: * Collect pointers to macro argument strings,
3667: * NUL-terminating them and escaping quotes.
3668: */
3669:
3670: src = buf->buf + pos;
3671: while (*src != '\0') {
3672: if (ctx->argc == ctx->argsz) {
3673: ctx->argsz += 8;
3674: ctx->argv = mandoc_reallocarray(ctx->argv,
3675: ctx->argsz, sizeof(*ctx->argv));
3676: }
1.351 schwarze 3677: arg = mandoc_getarg(&src, ln, &pos);
1.339 schwarze 3678: sz = 1; /* For the terminating NUL. */
3679: for (ap = arg; *ap != '\0'; ap++)
3680: sz += *ap == '"' ? 4 : 1;
3681: ctx->argv[ctx->argc++] = dst = mandoc_malloc(sz);
3682: for (ap = arg; *ap != '\0'; ap++) {
3683: if (*ap == '"') {
3684: memcpy(dst, "\\(dq", 4);
3685: dst += 4;
3686: } else
3687: *dst++ = *ap;
1.106 kristaps 3688: }
1.339 schwarze 3689: *dst = '\0';
1.337 schwarze 3690: }
3691:
1.339 schwarze 3692: /* Replace the macro invocation by the macro definition. */
1.263 schwarze 3693:
1.238 schwarze 3694: free(buf->buf);
1.339 schwarze 3695: buf->buf = mandoc_strdup(r->current_string);
3696: buf->sz = strlen(buf->buf) + 1;
1.248 schwarze 3697: *offs = 0;
1.106 kristaps 3698:
1.277 schwarze 3699: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
1.340 schwarze 3700: ROFF_REPARSE | ROFF_USERCALL : ROFF_IGN | ROFF_APPEND;
1.99 kristaps 3701: }
1.121 schwarze 3702:
1.306 schwarze 3703: /*
3704: * Calling a high-level macro that was renamed with .rn.
3705: * r->current_string has already been set up by roff_parse().
3706: */
1.340 schwarze 3707: static int
1.306 schwarze 3708: roff_renamed(ROFF_ARGS)
3709: {
3710: char *nbuf;
3711:
1.315 schwarze 3712: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
3713: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.306 schwarze 3714: free(buf->buf);
3715: buf->buf = nbuf;
1.329 schwarze 3716: *offs = 0;
1.306 schwarze 3717: return ROFF_CONT;
3718: }
3719:
1.212 schwarze 3720: static size_t
1.121 schwarze 3721: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3722: {
3723: char *name, *cp;
1.212 schwarze 3724: size_t namesz;
1.121 schwarze 3725:
3726: name = *cpp;
3727: if ('\0' == *name)
1.277 schwarze 3728: return 0;
1.121 schwarze 3729:
1.212 schwarze 3730: /* Read until end of name and terminate it with NUL. */
3731: for (cp = name; 1; cp++) {
3732: if ('\0' == *cp || ' ' == *cp) {
3733: namesz = cp - name;
3734: break;
3735: }
1.121 schwarze 3736: if ('\\' != *cp)
3737: continue;
1.215 schwarze 3738: namesz = cp - name;
3739: if ('{' == cp[1] || '}' == cp[1])
3740: break;
1.121 schwarze 3741: cp++;
3742: if ('\\' == *cp)
3743: continue;
1.350 schwarze 3744: mandoc_msg(MANDOCERR_NAMESC, ln, pos,
1.224 schwarze 3745: "%.*s", (int)(cp - name + 1), name);
1.212 schwarze 3746: mandoc_escape((const char **)&cp, NULL, NULL);
3747: break;
1.121 schwarze 3748: }
3749:
3750: /* Read past spaces. */
3751: while (' ' == *cp)
3752: cp++;
3753:
3754: *cpp = cp;
1.277 schwarze 3755: return namesz;
1.121 schwarze 3756: }
3757:
1.106 kristaps 3758: /*
3759: * Store *string into the user-defined string called *name.
3760: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.193 schwarze 3761: * append == 0: replace mode
3762: * append == 1: single-line append mode
3763: * append == 2: multiline append mode, append '\n' after each call
1.106 kristaps 3764: */
1.94 kristaps 3765: static void
1.106 kristaps 3766: roff_setstr(struct roff *r, const char *name, const char *string,
1.193 schwarze 3767: int append)
1.92 schwarze 3768: {
1.315 schwarze 3769: size_t namesz;
1.164 kristaps 3770:
1.315 schwarze 3771: namesz = strlen(name);
3772: roff_setstrn(&r->strtab, name, namesz, string,
1.207 schwarze 3773: string ? strlen(string) : 0, append);
1.315 schwarze 3774: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.164 kristaps 3775: }
3776:
3777: static void
1.166 kristaps 3778: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.193 schwarze 3779: const char *string, size_t stringsz, int append)
1.164 kristaps 3780: {
1.166 kristaps 3781: struct roffkv *n;
1.164 kristaps 3782: char *c;
3783: int i;
3784: size_t oldch, newch;
1.92 schwarze 3785:
1.106 kristaps 3786: /* Search for an existing string with the same name. */
1.164 kristaps 3787: n = *r;
3788:
1.211 schwarze 3789: while (n && (namesz != n->key.sz ||
3790: strncmp(n->key.p, name, namesz)))
1.92 schwarze 3791: n = n->next;
1.94 kristaps 3792:
3793: if (NULL == n) {
1.106 kristaps 3794: /* Create a new string table entry. */
1.166 kristaps 3795: n = mandoc_malloc(sizeof(struct roffkv));
3796: n->key.p = mandoc_strndup(name, namesz);
3797: n->key.sz = namesz;
3798: n->val.p = NULL;
3799: n->val.sz = 0;
1.164 kristaps 3800: n->next = *r;
3801: *r = n;
1.193 schwarze 3802: } else if (0 == append) {
1.166 kristaps 3803: free(n->val.p);
3804: n->val.p = NULL;
3805: n->val.sz = 0;
1.106 kristaps 3806: }
3807:
3808: if (NULL == string)
3809: return;
3810:
3811: /*
3812: * One additional byte for the '\n' in multiline mode,
3813: * and one for the terminating '\0'.
3814: */
1.193 schwarze 3815: newch = stringsz + (1 < append ? 2u : 1u);
1.164 kristaps 3816:
1.166 kristaps 3817: if (NULL == n->val.p) {
3818: n->val.p = mandoc_malloc(newch);
3819: *n->val.p = '\0';
1.106 kristaps 3820: oldch = 0;
3821: } else {
1.166 kristaps 3822: oldch = n->val.sz;
3823: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.106 kristaps 3824: }
3825:
3826: /* Skip existing content in the destination buffer. */
1.166 kristaps 3827: c = n->val.p + (int)oldch;
1.106 kristaps 3828:
3829: /* Append new content to the destination buffer. */
1.164 kristaps 3830: i = 0;
3831: while (i < (int)stringsz) {
1.106 kristaps 3832: /*
3833: * Rudimentary roff copy mode:
3834: * Handle escaped backslashes.
3835: */
1.164 kristaps 3836: if ('\\' == string[i] && '\\' == string[i + 1])
3837: i++;
3838: *c++ = string[i++];
1.106 kristaps 3839: }
1.94 kristaps 3840:
1.106 kristaps 3841: /* Append terminating bytes. */
1.193 schwarze 3842: if (1 < append)
1.106 kristaps 3843: *c++ = '\n';
1.163 kristaps 3844:
1.106 kristaps 3845: *c = '\0';
1.166 kristaps 3846: n->val.sz = (int)(c - n->val.p);
1.92 schwarze 3847: }
3848:
1.94 kristaps 3849: static const char *
1.325 schwarze 3850: roff_getstrn(struct roff *r, const char *name, size_t len,
1.315 schwarze 3851: int *deftype)
1.92 schwarze 3852: {
1.315 schwarze 3853: const struct roffkv *n;
1.325 schwarze 3854: int found, i;
1.315 schwarze 3855: enum roff_tok tok;
3856:
1.325 schwarze 3857: found = 0;
3858: for (n = r->strtab; n != NULL; n = n->next) {
3859: if (strncmp(name, n->key.p, len) != 0 ||
3860: n->key.p[len] != '\0' || n->val.p == NULL)
3861: continue;
3862: if (*deftype & ROFFDEF_USER) {
3863: *deftype = ROFFDEF_USER;
3864: return n->val.p;
3865: } else {
3866: found = 1;
3867: break;
3868: }
3869: }
3870: for (n = r->rentab; n != NULL; n = n->next) {
3871: if (strncmp(name, n->key.p, len) != 0 ||
3872: n->key.p[len] != '\0' || n->val.p == NULL)
3873: continue;
3874: if (*deftype & ROFFDEF_REN) {
3875: *deftype = ROFFDEF_REN;
3876: return n->val.p;
3877: } else {
3878: found = 1;
3879: break;
1.315 schwarze 3880: }
3881: }
1.325 schwarze 3882: for (i = 0; i < PREDEFS_MAX; i++) {
3883: if (strncmp(name, predefs[i].name, len) != 0 ||
3884: predefs[i].name[len] != '\0')
3885: continue;
3886: if (*deftype & ROFFDEF_PRE) {
3887: *deftype = ROFFDEF_PRE;
3888: return predefs[i].str;
3889: } else {
3890: found = 1;
3891: break;
1.315 schwarze 3892: }
3893: }
1.325 schwarze 3894: if (r->man->macroset != MACROSET_MAN) {
3895: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
3896: if (strncmp(name, roff_name[tok], len) != 0 ||
3897: roff_name[tok][len] != '\0')
3898: continue;
3899: if (*deftype & ROFFDEF_STD) {
3900: *deftype = ROFFDEF_STD;
3901: return NULL;
3902: } else {
3903: found = 1;
3904: break;
1.315 schwarze 3905: }
3906: }
3907: }
1.325 schwarze 3908: if (r->man->macroset != MACROSET_MDOC) {
3909: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
3910: if (strncmp(name, roff_name[tok], len) != 0 ||
3911: roff_name[tok][len] != '\0')
3912: continue;
3913: if (*deftype & ROFFDEF_STD) {
3914: *deftype = ROFFDEF_STD;
3915: return NULL;
3916: } else {
3917: found = 1;
3918: break;
1.315 schwarze 3919: }
3920: }
1.325 schwarze 3921: }
3922:
3923: if (found == 0 && *deftype != ROFFDEF_ANY) {
3924: if (*deftype & ROFFDEF_REN) {
3925: /*
3926: * This might still be a request,
3927: * so do not treat it as undefined yet.
3928: */
3929: *deftype = ROFFDEF_UNDEF;
3930: return NULL;
1.315 schwarze 3931: }
1.325 schwarze 3932:
3933: /* Using an undefined string defines it to be empty. */
3934:
3935: roff_setstrn(&r->strtab, name, len, "", 0, 0);
3936: roff_setstrn(&r->rentab, name, len, NULL, 0, 0);
1.315 schwarze 3937: }
1.325 schwarze 3938:
1.315 schwarze 3939: *deftype = 0;
1.277 schwarze 3940: return NULL;
1.92 schwarze 3941: }
3942:
1.94 kristaps 3943: static void
1.167 kristaps 3944: roff_freestr(struct roffkv *r)
1.92 schwarze 3945: {
1.166 kristaps 3946: struct roffkv *n, *nn;
1.92 schwarze 3947:
1.167 kristaps 3948: for (n = r; n; n = nn) {
1.166 kristaps 3949: free(n->key.p);
3950: free(n->val.p);
1.92 schwarze 3951: nn = n->next;
3952: free(n);
3953: }
1.114 kristaps 3954: }
1.266 schwarze 3955:
3956: /* --- accessors and utility functions ------------------------------------ */
1.164 kristaps 3957:
3958: /*
3959: * Duplicate an input string, making the appropriate character
3960: * conversations (as stipulated by `tr') along the way.
3961: * Returns a heap-allocated string with all the replacements made.
3962: */
3963: char *
3964: roff_strdup(const struct roff *r, const char *p)
3965: {
1.166 kristaps 3966: const struct roffkv *cp;
1.164 kristaps 3967: char *res;
3968: const char *pp;
3969: size_t ssz, sz;
3970: enum mandoc_esc esc;
3971:
1.167 kristaps 3972: if (NULL == r->xmbtab && NULL == r->xtab)
1.277 schwarze 3973: return mandoc_strdup(p);
1.164 kristaps 3974: else if ('\0' == *p)
1.277 schwarze 3975: return mandoc_strdup("");
1.164 kristaps 3976:
3977: /*
3978: * Step through each character looking for term matches
3979: * (remember that a `tr' can be invoked with an escape, which is
3980: * a glyph but the escape is multi-character).
3981: * We only do this if the character hash has been initialised
3982: * and the string is >0 length.
3983: */
3984:
3985: res = NULL;
3986: ssz = 0;
3987:
3988: while ('\0' != *p) {
1.289 schwarze 3989: assert((unsigned int)*p < 128);
3990: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.167 kristaps 3991: sz = r->xtab[(int)*p].sz;
3992: res = mandoc_realloc(res, ssz + sz + 1);
3993: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3994: ssz += sz;
3995: p++;
3996: continue;
3997: } else if ('\\' != *p) {
3998: res = mandoc_realloc(res, ssz + 2);
3999: res[ssz++] = *p++;
4000: continue;
4001: }
4002:
1.164 kristaps 4003: /* Search for term matches. */
1.167 kristaps 4004: for (cp = r->xmbtab; cp; cp = cp->next)
1.166 kristaps 4005: if (0 == strncmp(p, cp->key.p, cp->key.sz))
1.164 kristaps 4006: break;
4007:
4008: if (NULL != cp) {
4009: /*
4010: * A match has been found.
4011: * Append the match to the array and move
4012: * forward by its keysize.
4013: */
1.207 schwarze 4014: res = mandoc_realloc(res,
4015: ssz + cp->val.sz + 1);
1.166 kristaps 4016: memcpy(res + ssz, cp->val.p, cp->val.sz);
4017: ssz += cp->val.sz;
4018: p += (int)cp->key.sz;
1.164 kristaps 4019: continue;
4020: }
4021:
1.167 kristaps 4022: /*
4023: * Handle escapes carefully: we need to copy
4024: * over just the escape itself, or else we might
4025: * do replacements within the escape itself.
4026: * Make sure to pass along the bogus string.
4027: */
4028: pp = p++;
4029: esc = mandoc_escape(&p, NULL, NULL);
4030: if (ESCAPE_ERROR == esc) {
4031: sz = strlen(pp);
1.164 kristaps 4032: res = mandoc_realloc(res, ssz + sz + 1);
4033: memcpy(res + ssz, pp, sz);
1.167 kristaps 4034: break;
1.164 kristaps 4035: }
1.207 schwarze 4036: /*
4037: * We bail out on bad escapes.
1.167 kristaps 4038: * No need to warn: we already did so when
4039: * roff_res() was called.
4040: */
4041: sz = (int)(p - pp);
4042: res = mandoc_realloc(res, ssz + sz + 1);
4043: memcpy(res + ssz, pp, sz);
4044: ssz += sz;
1.164 kristaps 4045: }
4046:
4047: res[(int)ssz] = '\0';
1.277 schwarze 4048: return res;
1.227 schwarze 4049: }
4050:
4051: int
4052: roff_getformat(const struct roff *r)
4053: {
4054:
1.277 schwarze 4055: return r->format;
1.174 kristaps 4056: }
4057:
4058: /*
1.207 schwarze 4059: * Find out whether a line is a macro line or not.
1.174 kristaps 4060: * If it is, adjust the current position and return one; if it isn't,
4061: * return zero and don't change the current position.
4062: * If the control character has been set with `.cc', then let that grain
4063: * precedence.
4064: * This is slighly contrary to groff, where using the non-breaking
4065: * control character when `cc' has been invoked will cause the
4066: * non-breaking macro contents to be printed verbatim.
4067: */
4068: int
4069: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
4070: {
4071: int pos;
4072:
4073: pos = *ppos;
4074:
1.303 schwarze 4075: if (r->control != '\0' && cp[pos] == r->control)
1.174 kristaps 4076: pos++;
1.303 schwarze 4077: else if (r->control != '\0')
1.277 schwarze 4078: return 0;
1.174 kristaps 4079: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
4080: pos += 2;
4081: else if ('.' == cp[pos] || '\'' == cp[pos])
4082: pos++;
4083: else
1.277 schwarze 4084: return 0;
1.174 kristaps 4085:
4086: while (' ' == cp[pos] || '\t' == cp[pos])
4087: pos++;
4088:
4089: *ppos = pos;
1.277 schwarze 4090: return 1;
1.74 kristaps 4091: }
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