Annotation of mandoc/roff.c, Revision 1.310
1.310 ! schwarze 1: /* $Id: roff.c,v 1.309 2017/06/14 13:00:31 schwarze Exp $ */
1.1 kristaps 2: /*
1.267 schwarze 3: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.287 schwarze 4: * Copyright (c) 2010-2015, 2017 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:
1.67 kristaps 31: #include "mandoc.h"
1.201 schwarze 32: #include "mandoc_aux.h"
1.295 schwarze 33: #include "mandoc_ohash.h"
1.265 schwarze 34: #include "roff.h"
1.226 schwarze 35: #include "libmandoc.h"
1.266 schwarze 36: #include "roff_int.h"
1.109 kristaps 37: #include "libroff.h"
1.82 kristaps 38:
1.170 schwarze 39: /* Maximum number of string expansions per line, to break infinite loops. */
40: #define EXPAND_LIMIT 1000
41:
1.266 schwarze 42: /* --- data types --------------------------------------------------------- */
43:
1.147 kristaps 44: /*
1.167 kristaps 45: * An incredibly-simple string buffer.
46: */
1.94 kristaps 47: struct roffstr {
1.167 kristaps 48: char *p; /* nil-terminated buffer */
49: size_t sz; /* saved strlen(p) */
1.166 kristaps 50: };
51:
52: /*
1.167 kristaps 53: * A key-value roffstr pair as part of a singly-linked list.
1.166 kristaps 54: */
55: struct roffkv {
56: struct roffstr key;
57: struct roffstr val;
58: struct roffkv *next; /* next in list */
1.94 kristaps 59: };
60:
1.180 schwarze 61: /*
62: * A single number register as part of a singly-linked list.
63: */
64: struct roffreg {
65: struct roffstr key;
1.181 schwarze 66: int val;
1.180 schwarze 67: struct roffreg *next;
68: };
69:
1.295 schwarze 70: /*
71: * Association of request and macro names with token IDs.
72: */
73: struct roffreq {
74: enum roff_tok tok;
75: char name[];
76: };
77:
1.67 kristaps 78: struct roff {
1.128 kristaps 79: struct mparse *parse; /* parse point */
1.296 schwarze 80: struct roff_man *man; /* mdoc or man parser */
1.67 kristaps 81: struct roffnode *last; /* leaf of stack */
1.223 schwarze 82: int *rstack; /* stack of inverted `ie' values */
1.295 schwarze 83: struct ohash *reqtab; /* request lookup table */
1.180 schwarze 84: struct roffreg *regtab; /* number registers */
1.166 kristaps 85: struct roffkv *strtab; /* user-defined strings & macros */
1.306 schwarze 86: struct roffkv *rentab; /* renamed strings & macros */
1.167 kristaps 87: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
88: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.106 kristaps 89: const char *current_string; /* value of last called user macro */
1.118 kristaps 90: struct tbl_node *first_tbl; /* first table parsed */
91: struct tbl_node *last_tbl; /* last table parsed */
92: struct tbl_node *tbl; /* current table being parsed */
1.125 kristaps 93: struct eqn_node *last_eqn; /* last equation parsed */
94: struct eqn_node *first_eqn; /* first equation parsed */
95: struct eqn_node *eqn; /* current equation being parsed */
1.230 schwarze 96: int eqn_inline; /* current equation is inline */
1.223 schwarze 97: int options; /* parse options */
98: int rstacksz; /* current size limit of rstack */
99: int rstackpos; /* position in rstack */
1.227 schwarze 100: int format; /* current file in mdoc or man format */
1.273 schwarze 101: int argc; /* number of args of the last macro */
1.223 schwarze 102: char control; /* control character */
1.303 schwarze 103: char escape; /* escape character */
1.79 kristaps 104: };
105:
1.67 kristaps 106: struct roffnode {
1.294 schwarze 107: enum roff_tok tok; /* type of node */
1.67 kristaps 108: struct roffnode *parent; /* up one in stack */
109: int line; /* parse line */
110: int col; /* parse col */
1.106 kristaps 111: char *name; /* node name, e.g. macro name */
1.79 kristaps 112: char *end; /* end-rules: custom token */
113: int endspan; /* end-rules: next-line or infty */
1.198 schwarze 114: int rule; /* current evaluation rule */
1.67 kristaps 115: };
116:
117: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.294 schwarze 118: enum roff_tok tok, /* tok of macro */ \
1.238 schwarze 119: struct buf *buf, /* input buffer */ \
1.67 kristaps 120: int ln, /* parse line */ \
1.75 kristaps 121: int ppos, /* original pos in buffer */ \
122: int pos, /* current pos in buffer */ \
1.74 kristaps 123: int *offs /* reset offset of buffer data */
1.67 kristaps 124:
125: typedef enum rofferr (*roffproc)(ROFF_ARGS);
126:
127: struct roffmac {
1.79 kristaps 128: roffproc proc; /* process new macro */
129: roffproc text; /* process as child text of macro */
130: roffproc sub; /* process as child of macro */
131: int flags;
132: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.67 kristaps 133: };
134:
1.141 kristaps 135: struct predef {
136: const char *name; /* predefined input name */
137: const char *str; /* replacement symbol */
138: };
139:
140: #define PREDEF(__name, __str) \
141: { (__name), (__str) },
142:
1.266 schwarze 143: /* --- function prototypes ------------------------------------------------ */
144:
1.155 kristaps 145: static void roffnode_cleanscope(struct roff *);
146: static void roffnode_pop(struct roff *);
1.294 schwarze 147: static void roffnode_push(struct roff *, enum roff_tok,
1.155 kristaps 148: const char *, int, int);
1.80 kristaps 149: static enum rofferr roff_block(ROFF_ARGS);
150: static enum rofferr roff_block_text(ROFF_ARGS);
151: static enum rofferr roff_block_sub(ROFF_ARGS);
1.296 schwarze 152: static enum rofferr roff_br(ROFF_ARGS);
1.80 kristaps 153: static enum rofferr roff_cblock(ROFF_ARGS);
1.174 kristaps 154: static enum rofferr roff_cc(ROFF_ARGS);
1.195 schwarze 155: static void roff_ccond(struct roff *, int, int);
1.82 kristaps 156: static enum rofferr roff_cond(ROFF_ARGS);
157: static enum rofferr roff_cond_text(ROFF_ARGS);
158: static enum rofferr roff_cond_sub(ROFF_ARGS);
1.92 schwarze 159: static enum rofferr roff_ds(ROFF_ARGS);
1.303 schwarze 160: static enum rofferr roff_ec(ROFF_ARGS);
161: static enum rofferr roff_eo(ROFF_ARGS);
1.238 schwarze 162: static enum rofferr roff_eqndelim(struct roff *, struct buf *, int);
1.271 schwarze 163: static int roff_evalcond(struct roff *r, int, char *, int *);
1.234 kristaps 164: static int roff_evalnum(struct roff *, int,
165: const char *, int *, int *, int);
166: static int roff_evalpar(struct roff *, int,
1.261 schwarze 167: const char *, int *, int *, int);
1.198 schwarze 168: static int roff_evalstrcond(const char *, int *);
1.155 kristaps 169: static void roff_free1(struct roff *);
1.180 schwarze 170: static void roff_freereg(struct roffreg *);
1.167 kristaps 171: static void roff_freestr(struct roffkv *);
1.212 schwarze 172: static size_t roff_getname(struct roff *, char **, int, int);
1.261 schwarze 173: static int roff_getnum(const char *, int *, int *, int);
1.184 schwarze 174: static int roff_getop(const char *, int *, char *);
1.181 schwarze 175: static int roff_getregn(const struct roff *,
176: const char *, size_t);
1.273 schwarze 177: static int roff_getregro(const struct roff *,
178: const char *name);
1.306 schwarze 179: static const char *roff_getrenn(const struct roff *,
180: const char *, size_t);
1.207 schwarze 181: static const char *roff_getstrn(const struct roff *,
1.94 kristaps 182: const char *, size_t);
1.271 schwarze 183: static int roff_hasregn(const struct roff *,
184: const char *, size_t);
1.251 schwarze 185: static enum rofferr roff_insec(ROFF_ARGS);
1.178 schwarze 186: static enum rofferr roff_it(ROFF_ARGS);
1.103 kristaps 187: static enum rofferr roff_line_ignore(ROFF_ARGS);
1.265 schwarze 188: static void roff_man_alloc1(struct roff_man *);
189: static void roff_man_free1(struct roff_man *);
1.300 schwarze 190: static enum rofferr roff_manyarg(ROFF_ARGS);
1.89 kristaps 191: static enum rofferr roff_nr(ROFF_ARGS);
1.297 schwarze 192: static enum rofferr roff_onearg(ROFF_ARGS);
1.294 schwarze 193: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.214 schwarze 194: int, int);
1.305 schwarze 195: static enum rofferr roff_parsetext(struct roff *, struct buf *,
196: int, int *);
1.306 schwarze 197: static enum rofferr roff_renamed(ROFF_ARGS);
1.238 schwarze 198: static enum rofferr roff_res(struct roff *, struct buf *, int, int);
1.122 schwarze 199: static enum rofferr roff_rm(ROFF_ARGS);
1.306 schwarze 200: static enum rofferr roff_rn(ROFF_ARGS);
1.203 schwarze 201: static enum rofferr roff_rr(ROFF_ARGS);
1.94 kristaps 202: static void roff_setstr(struct roff *,
1.106 kristaps 203: const char *, const char *, int);
1.207 schwarze 204: static void roff_setstrn(struct roffkv **, const char *,
1.164 kristaps 205: size_t, const char *, size_t, int);
1.105 kristaps 206: static enum rofferr roff_so(ROFF_ARGS);
1.164 kristaps 207: static enum rofferr roff_tr(ROFF_ARGS);
1.175 schwarze 208: static enum rofferr roff_Dd(ROFF_ARGS);
209: static enum rofferr roff_TH(ROFF_ARGS);
1.109 kristaps 210: static enum rofferr roff_TE(ROFF_ARGS);
211: static enum rofferr roff_TS(ROFF_ARGS);
1.125 kristaps 212: static enum rofferr roff_EQ(ROFF_ARGS);
213: static enum rofferr roff_EN(ROFF_ARGS);
1.112 kristaps 214: static enum rofferr roff_T_(ROFF_ARGS);
1.251 schwarze 215: static enum rofferr roff_unsupp(ROFF_ARGS);
1.106 kristaps 216: static enum rofferr roff_userdef(ROFF_ARGS);
1.67 kristaps 217:
1.266 schwarze 218: /* --- constant data ------------------------------------------------------ */
219:
1.261 schwarze 220: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
221: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
222:
1.294 schwarze 223: const char *__roff_name[MAN_MAX + 1] = {
1.305 schwarze 224: "br", "ce", "ft", "ll",
1.309 schwarze 225: "mc", "rj", "sp", "ta",
226: "ti", NULL,
1.294 schwarze 227: "ab", "ad", "af", "aln",
228: "als", "am", "am1", "ami",
229: "ami1", "as", "as1", "asciify",
230: "backtrace", "bd", "bleedat", "blm",
231: "box", "boxa", "bp", "BP",
232: "break", "breakchar", "brnl", "brp",
1.305 schwarze 233: "brpnl", "c2", "cc",
1.294 schwarze 234: "cf", "cflags", "ch", "char",
235: "chop", "class", "close", "CL",
236: "color", "composite", "continue", "cp",
237: "cropat", "cs", "cu", "da",
238: "dch", "Dd", "de", "de1",
239: "defcolor", "dei", "dei1", "device",
240: "devicem", "di", "do", "ds",
241: "ds1", "dwh", "dt", "ec",
242: "ecr", "ecs", "el", "em",
243: "EN", "eo", "EP", "EQ",
244: "errprint", "ev", "evc", "ex",
245: "fallback", "fam", "fc", "fchar",
246: "fcolor", "fdeferlig", "feature", "fkern",
247: "fl", "flig", "fp", "fps",
248: "fschar", "fspacewidth", "fspecial", "ftr",
249: "fzoom", "gcolor", "hc", "hcode",
250: "hidechar", "hla", "hlm", "hpf",
251: "hpfa", "hpfcode", "hw", "hy",
252: "hylang", "hylen", "hym", "hypp",
253: "hys", "ie", "if", "ig",
254: "index", "it", "itc", "IX",
255: "kern", "kernafter", "kernbefore", "kernpair",
256: "lc", "lc_ctype", "lds", "length",
257: "letadj", "lf", "lg", "lhang",
258: "linetabs", "lnr", "lnrf", "lpfx",
1.304 schwarze 259: "ls", "lsm", "lt",
1.294 schwarze 260: "mediasize", "minss", "mk", "mso",
261: "na", "ne", "nh", "nhychar",
262: "nm", "nn", "nop", "nr",
263: "nrf", "nroff", "ns", "nx",
264: "open", "opena", "os", "output",
265: "padj", "papersize", "pc", "pev",
266: "pi", "PI", "pl", "pm",
267: "pn", "pnr", "po", "ps",
268: "psbb", "pshape", "pso", "ptr",
269: "pvs", "rchar", "rd", "recursionlimit",
1.309 schwarze 270: "return", "rfschar", "rhang",
1.294 schwarze 271: "rm", "rn", "rnn", "rr",
272: "rs", "rt", "schar", "sentchar",
273: "shc", "shift", "sizes", "so",
274: "spacewidth", "special", "spreadwarn", "ss",
275: "sty", "substring", "sv", "sy",
1.300 schwarze 276: "T&", "tc", "TE",
1.301 schwarze 277: "TH", "tkf", "tl",
1.294 schwarze 278: "tm", "tm1", "tmc", "tr",
279: "track", "transchar", "trf", "trimat",
280: "trin", "trnt", "troff", "TS",
281: "uf", "ul", "unformat", "unwatch",
282: "unwatchn", "vpt", "vs", "warn",
283: "warnscale", "watch", "watchlength", "watchn",
284: "wh", "while", "write", "writec",
285: "writem", "xflag", ".", NULL,
1.306 schwarze 286: NULL, "text",
1.294 schwarze 287: "Dd", "Dt", "Os", "Sh",
288: "Ss", "Pp", "D1", "Dl",
289: "Bd", "Ed", "Bl", "El",
290: "It", "Ad", "An", "Ap",
291: "Ar", "Cd", "Cm", "Dv",
292: "Er", "Ev", "Ex", "Fa",
293: "Fd", "Fl", "Fn", "Ft",
294: "Ic", "In", "Li", "Nd",
295: "Nm", "Op", "Ot", "Pa",
296: "Rv", "St", "Va", "Vt",
297: "Xr", "%A", "%B", "%D",
298: "%I", "%J", "%N", "%O",
299: "%P", "%R", "%T", "%V",
300: "Ac", "Ao", "Aq", "At",
301: "Bc", "Bf", "Bo", "Bq",
302: "Bsx", "Bx", "Db", "Dc",
303: "Do", "Dq", "Ec", "Ef",
304: "Em", "Eo", "Fx", "Ms",
305: "No", "Ns", "Nx", "Ox",
306: "Pc", "Pf", "Po", "Pq",
307: "Qc", "Ql", "Qo", "Qq",
308: "Re", "Rs", "Sc", "So",
309: "Sq", "Sm", "Sx", "Sy",
310: "Tn", "Ux", "Xc", "Xo",
311: "Fo", "Fc", "Oo", "Oc",
312: "Bk", "Ek", "Bt", "Hf",
313: "Fr", "Ud", "Lb", "Lp",
314: "Lk", "Mt", "Brq", "Bro",
315: "Brc", "%C", "Es", "En",
1.299 schwarze 316: "Dx", "%Q", "%U", "Ta",
317: NULL,
1.294 schwarze 318: "TH", "SH", "SS", "TP",
319: "LP", "PP", "P", "IP",
320: "HP", "SM", "SB", "BI",
321: "IB", "BR", "RB", "R",
322: "B", "I", "IR", "RI",
1.299 schwarze 323: "nf", "fi",
1.294 schwarze 324: "RE", "RS", "DT", "UC",
1.297 schwarze 325: "PD", "AT", "in",
1.294 schwarze 326: "OP", "EX", "EE", "UR",
1.298 schwarze 327: "UE", NULL
1.294 schwarze 328: };
329: const char *const *roff_name = __roff_name;
330:
331: static struct roffmac roffs[TOKEN_NONE] = {
1.296 schwarze 332: { roff_br, NULL, NULL, 0 }, /* br */
1.305 schwarze 333: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.297 schwarze 334: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.298 schwarze 335: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.304 schwarze 336: { roff_onearg, NULL, NULL, 0 }, /* mc */
1.309 schwarze 337: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.299 schwarze 338: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.300 schwarze 339: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.301 schwarze 340: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.296 schwarze 341: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.295 schwarze 342: { roff_unsupp, NULL, NULL, 0 }, /* ab */
343: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
344: { roff_line_ignore, NULL, NULL, 0 }, /* af */
345: { roff_unsupp, NULL, NULL, 0 }, /* aln */
346: { roff_unsupp, NULL, NULL, 0 }, /* als */
347: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
348: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
349: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
350: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
351: { roff_ds, NULL, NULL, 0 }, /* as */
352: { roff_ds, NULL, NULL, 0 }, /* as1 */
353: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
354: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
355: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
356: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
357: { roff_unsupp, NULL, NULL, 0 }, /* blm */
358: { roff_unsupp, NULL, NULL, 0 }, /* box */
359: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
360: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
361: { roff_unsupp, NULL, NULL, 0 }, /* BP */
362: { roff_unsupp, NULL, NULL, 0 }, /* break */
363: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
364: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.296 schwarze 365: { roff_br, NULL, NULL, 0 }, /* brp */
1.295 schwarze 366: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
367: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
368: { roff_cc, NULL, NULL, 0 }, /* cc */
369: { roff_insec, NULL, NULL, 0 }, /* cf */
370: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
371: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
372: { roff_unsupp, NULL, NULL, 0 }, /* char */
373: { roff_unsupp, NULL, NULL, 0 }, /* chop */
374: { roff_line_ignore, NULL, NULL, 0 }, /* class */
375: { roff_insec, NULL, NULL, 0 }, /* close */
376: { roff_unsupp, NULL, NULL, 0 }, /* CL */
377: { roff_line_ignore, NULL, NULL, 0 }, /* color */
378: { roff_unsupp, NULL, NULL, 0 }, /* composite */
379: { roff_unsupp, NULL, NULL, 0 }, /* continue */
380: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
381: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
382: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
383: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
384: { roff_unsupp, NULL, NULL, 0 }, /* da */
385: { roff_unsupp, NULL, NULL, 0 }, /* dch */
386: { roff_Dd, NULL, NULL, 0 }, /* Dd */
387: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
388: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
389: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
390: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
391: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
392: { roff_unsupp, NULL, NULL, 0 }, /* device */
393: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
394: { roff_unsupp, NULL, NULL, 0 }, /* di */
395: { roff_unsupp, NULL, NULL, 0 }, /* do */
396: { roff_ds, NULL, NULL, 0 }, /* ds */
397: { roff_ds, NULL, NULL, 0 }, /* ds1 */
398: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
399: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.303 schwarze 400: { roff_ec, NULL, NULL, 0 }, /* ec */
1.295 schwarze 401: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
402: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
403: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
404: { roff_unsupp, NULL, NULL, 0 }, /* em */
405: { roff_EN, NULL, NULL, 0 }, /* EN */
1.303 schwarze 406: { roff_eo, NULL, NULL, 0 }, /* eo */
1.295 schwarze 407: { roff_unsupp, NULL, NULL, 0 }, /* EP */
408: { roff_EQ, NULL, NULL, 0 }, /* EQ */
409: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
410: { roff_unsupp, NULL, NULL, 0 }, /* ev */
411: { roff_unsupp, NULL, NULL, 0 }, /* evc */
412: { roff_unsupp, NULL, NULL, 0 }, /* ex */
413: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
414: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
415: { roff_unsupp, NULL, NULL, 0 }, /* fc */
416: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
417: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
418: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
419: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
420: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
421: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
422: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
423: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
424: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
425: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
426: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
427: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
428: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
429: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
430: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
431: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
432: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
433: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
434: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
435: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
436: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
437: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
438: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
439: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
440: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
441: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
442: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
443: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
444: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
445: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
446: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
447: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
448: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
449: { roff_unsupp, NULL, NULL, 0 }, /* index */
450: { roff_it, NULL, NULL, 0 }, /* it */
451: { roff_unsupp, NULL, NULL, 0 }, /* itc */
452: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
453: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
454: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
455: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
456: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
457: { roff_unsupp, NULL, NULL, 0 }, /* lc */
458: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
459: { roff_unsupp, NULL, NULL, 0 }, /* lds */
460: { roff_unsupp, NULL, NULL, 0 }, /* length */
461: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
462: { roff_insec, NULL, NULL, 0 }, /* lf */
463: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
464: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
465: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
466: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
467: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
468: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
469: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
470: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
471: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
472: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
473: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
474: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
475: { roff_insec, NULL, NULL, 0 }, /* mso */
476: { roff_line_ignore, NULL, NULL, 0 }, /* na */
477: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
478: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
479: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
480: { roff_unsupp, NULL, NULL, 0 }, /* nm */
481: { roff_unsupp, NULL, NULL, 0 }, /* nn */
482: { roff_unsupp, NULL, NULL, 0 }, /* nop */
483: { roff_nr, NULL, NULL, 0 }, /* nr */
484: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
485: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
486: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
487: { roff_insec, NULL, NULL, 0 }, /* nx */
488: { roff_insec, NULL, NULL, 0 }, /* open */
489: { roff_insec, NULL, NULL, 0 }, /* opena */
490: { roff_line_ignore, NULL, NULL, 0 }, /* os */
491: { roff_unsupp, NULL, NULL, 0 }, /* output */
492: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
493: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
494: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
495: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
496: { roff_insec, NULL, NULL, 0 }, /* pi */
497: { roff_unsupp, NULL, NULL, 0 }, /* PI */
498: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
499: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
500: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
501: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
502: { roff_line_ignore, NULL, NULL, 0 }, /* po */
503: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
504: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
505: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
506: { roff_insec, NULL, NULL, 0 }, /* pso */
507: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
508: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
509: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
510: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
511: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
512: { roff_unsupp, NULL, NULL, 0 }, /* return */
513: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
514: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
515: { roff_rm, NULL, NULL, 0 }, /* rm */
1.306 schwarze 516: { roff_rn, NULL, NULL, 0 }, /* rn */
1.295 schwarze 517: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
518: { roff_rr, NULL, NULL, 0 }, /* rr */
519: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
520: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
521: { roff_unsupp, NULL, NULL, 0 }, /* schar */
522: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
523: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
524: { roff_unsupp, NULL, NULL, 0 }, /* shift */
525: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
526: { roff_so, NULL, NULL, 0 }, /* so */
527: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
528: { roff_line_ignore, NULL, NULL, 0 }, /* special */
529: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
530: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
531: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
532: { roff_unsupp, NULL, NULL, 0 }, /* substring */
533: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
534: { roff_insec, NULL, NULL, 0 }, /* sy */
535: { roff_T_, NULL, NULL, 0 }, /* T& */
536: { roff_unsupp, NULL, NULL, 0 }, /* tc */
537: { roff_TE, NULL, NULL, 0 }, /* TE */
538: { roff_TH, NULL, NULL, 0 }, /* TH */
539: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
540: { roff_unsupp, NULL, NULL, 0 }, /* tl */
541: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
542: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
543: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
544: { roff_tr, NULL, NULL, 0 }, /* tr */
545: { roff_line_ignore, NULL, NULL, 0 }, /* track */
546: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
547: { roff_insec, NULL, NULL, 0 }, /* trf */
548: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
549: { roff_unsupp, NULL, NULL, 0 }, /* trin */
550: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
551: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
552: { roff_TS, NULL, NULL, 0 }, /* TS */
553: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
554: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
555: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
556: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
557: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
558: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
559: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
560: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
561: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
562: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
563: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
564: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
565: { roff_unsupp, NULL, NULL, 0 }, /* wh */
566: { roff_unsupp, NULL, NULL, 0 }, /* while */
567: { roff_insec, NULL, NULL, 0 }, /* write */
568: { roff_insec, NULL, NULL, 0 }, /* writec */
569: { roff_insec, NULL, NULL, 0 }, /* writem */
570: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
571: { roff_cblock, NULL, NULL, 0 }, /* . */
1.306 schwarze 572: { roff_renamed, NULL, NULL, 0 },
1.295 schwarze 573: { roff_userdef, NULL, NULL, 0 }
1.67 kristaps 574: };
575:
1.200 schwarze 576: /* not currently implemented: Ds em Eq LP Me PP pp Or Rd Sf SH */
1.175 schwarze 577: const char *const __mdoc_reserved[] = {
578: "Ac", "Ad", "An", "Ao", "Ap", "Aq", "Ar", "At",
579: "Bc", "Bd", "Bf", "Bk", "Bl", "Bo", "Bq",
580: "Brc", "Bro", "Brq", "Bsx", "Bt", "Bx",
581: "Cd", "Cm", "Db", "Dc", "Dd", "Dl", "Do", "Dq",
1.200 schwarze 582: "Dt", "Dv", "Dx", "D1",
583: "Ec", "Ed", "Ef", "Ek", "El", "Em",
584: "En", "Eo", "Er", "Es", "Ev", "Ex",
1.175 schwarze 585: "Fa", "Fc", "Fd", "Fl", "Fn", "Fo", "Fr", "Ft", "Fx",
1.200 schwarze 586: "Hf", "Ic", "In", "It", "Lb", "Li", "Lk", "Lp",
587: "Ms", "Mt", "Nd", "Nm", "No", "Ns", "Nx",
1.175 schwarze 588: "Oc", "Oo", "Op", "Os", "Ot", "Ox",
1.200 schwarze 589: "Pa", "Pc", "Pf", "Po", "Pp", "Pq",
590: "Qc", "Ql", "Qo", "Qq", "Re", "Rs", "Rv",
591: "Sc", "Sh", "Sm", "So", "Sq",
1.175 schwarze 592: "Ss", "St", "Sx", "Sy",
593: "Ta", "Tn", "Ud", "Ux", "Va", "Vt", "Xc", "Xo", "Xr",
1.200 schwarze 594: "%A", "%B", "%C", "%D", "%I", "%J", "%N", "%O",
1.175 schwarze 595: "%P", "%Q", "%R", "%T", "%U", "%V",
596: NULL
597: };
598:
1.200 schwarze 599: /* not currently implemented: BT DE DS ME MT PT SY TQ YS */
1.175 schwarze 600: const char *const __man_reserved[] = {
1.200 schwarze 601: "AT", "B", "BI", "BR", "DT",
602: "EE", "EN", "EQ", "EX", "HP", "I", "IB", "IP", "IR",
603: "LP", "OP", "P", "PD", "PP",
604: "R", "RB", "RE", "RI", "RS", "SB", "SH", "SM", "SS",
605: "TE", "TH", "TP", "TS", "T&", "UC", "UE", "UR",
1.175 schwarze 606: NULL
607: };
608:
1.141 kristaps 609: /* Array of injected predefined strings. */
610: #define PREDEFS_MAX 38
611: static const struct predef predefs[PREDEFS_MAX] = {
612: #include "predefs.in"
613: };
614:
1.305 schwarze 615: static int roffce_lines; /* number of input lines to center */
616: static struct roff_node *roffce_node; /* active request */
1.178 schwarze 617: static int roffit_lines; /* number of lines to delay */
618: static char *roffit_macro; /* nil-terminated macro line */
619:
1.207 schwarze 620:
1.266 schwarze 621: /* --- request table ------------------------------------------------------ */
622:
1.295 schwarze 623: struct ohash *
624: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.85 kristaps 625: {
1.295 schwarze 626: struct ohash *htab;
627: struct roffreq *req;
628: enum roff_tok tok;
629: size_t sz;
630: unsigned int slot;
1.85 kristaps 631:
1.295 schwarze 632: htab = mandoc_malloc(sizeof(*htab));
633: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.85 kristaps 634:
1.295 schwarze 635: for (tok = mintok; tok < maxtok; tok++) {
1.296 schwarze 636: if (roff_name[tok] == NULL)
637: continue;
1.295 schwarze 638: sz = strlen(roff_name[tok]);
639: req = mandoc_malloc(sizeof(*req) + sz + 1);
640: req->tok = tok;
641: memcpy(req->name, roff_name[tok], sz + 1);
642: slot = ohash_qlookup(htab, req->name);
643: ohash_insert(htab, slot, req);
1.85 kristaps 644: }
1.295 schwarze 645: return htab;
1.85 kristaps 646: }
647:
1.295 schwarze 648: void
649: roffhash_free(struct ohash *htab)
1.67 kristaps 650: {
1.295 schwarze 651: struct roffreq *req;
652: unsigned int slot;
1.67 kristaps 653:
1.295 schwarze 654: if (htab == NULL)
655: return;
656: for (req = ohash_first(htab, &slot); req != NULL;
657: req = ohash_next(htab, &slot))
658: free(req);
659: ohash_delete(htab);
660: free(htab);
661: }
662:
663: enum roff_tok
664: roffhash_find(struct ohash *htab, const char *name, size_t sz)
665: {
666: struct roffreq *req;
667: const char *end;
668:
669: if (sz) {
670: end = name + sz;
671: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
672: } else
673: req = ohash_find(htab, ohash_qlookup(htab, name));
674: return req == NULL ? TOKEN_NONE : req->tok;
1.67 kristaps 675: }
676:
1.266 schwarze 677: /* --- stack of request blocks -------------------------------------------- */
678:
1.67 kristaps 679: /*
680: * Pop the current node off of the stack of roff instructions currently
681: * pending.
682: */
683: static void
684: roffnode_pop(struct roff *r)
685: {
686: struct roffnode *p;
687:
1.75 kristaps 688: assert(r->last);
1.207 schwarze 689: p = r->last;
1.82 kristaps 690:
1.75 kristaps 691: r->last = r->last->parent;
1.106 kristaps 692: free(p->name);
693: free(p->end);
1.67 kristaps 694: free(p);
695: }
696:
697: /*
698: * Push a roff node onto the instruction stack. This must later be
699: * removed with roffnode_pop().
700: */
1.98 schwarze 701: static void
1.294 schwarze 702: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.106 kristaps 703: int line, int col)
1.67 kristaps 704: {
705: struct roffnode *p;
706:
1.98 schwarze 707: p = mandoc_calloc(1, sizeof(struct roffnode));
1.67 kristaps 708: p->tok = tok;
1.106 kristaps 709: if (name)
710: p->name = mandoc_strdup(name);
1.67 kristaps 711: p->parent = r->last;
712: p->line = line;
713: p->col = col;
1.198 schwarze 714: p->rule = p->parent ? p->parent->rule : 0;
1.67 kristaps 715:
716: r->last = p;
717: }
718:
1.266 schwarze 719: /* --- roff parser state data management ---------------------------------- */
720:
1.67 kristaps 721: static void
722: roff_free1(struct roff *r)
723: {
1.176 schwarze 724: struct tbl_node *tbl;
1.125 kristaps 725: struct eqn_node *e;
1.167 kristaps 726: int i;
1.67 kristaps 727:
1.176 schwarze 728: while (NULL != (tbl = r->first_tbl)) {
729: r->first_tbl = tbl->next;
730: tbl_free(tbl);
1.109 kristaps 731: }
1.113 kristaps 732: r->first_tbl = r->last_tbl = r->tbl = NULL;
733:
1.125 kristaps 734: while (NULL != (e = r->first_eqn)) {
735: r->first_eqn = e->next;
736: eqn_free(e);
737: }
738: r->first_eqn = r->last_eqn = r->eqn = NULL;
739:
1.67 kristaps 740: while (r->last)
741: roffnode_pop(r);
1.109 kristaps 742:
1.223 schwarze 743: free (r->rstack);
744: r->rstack = NULL;
745: r->rstacksz = 0;
746: r->rstackpos = -1;
747:
748: roff_freereg(r->regtab);
749: r->regtab = NULL;
750:
1.167 kristaps 751: roff_freestr(r->strtab);
1.306 schwarze 752: roff_freestr(r->rentab);
1.167 kristaps 753: roff_freestr(r->xmbtab);
1.306 schwarze 754: r->strtab = r->rentab = r->xmbtab = NULL;
1.167 kristaps 755:
756: if (r->xtab)
757: for (i = 0; i < 128; i++)
758: free(r->xtab[i].p);
759: free(r->xtab);
760: r->xtab = NULL;
1.67 kristaps 761: }
762:
763: void
764: roff_reset(struct roff *r)
765: {
766: roff_free1(r);
1.227 schwarze 767: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.303 schwarze 768: r->control = '\0';
769: r->escape = '\\';
1.307 schwarze 770: roffce_lines = 0;
771: roffce_node = NULL;
772: roffit_lines = 0;
773: roffit_macro = NULL;
1.67 kristaps 774: }
775:
776: void
777: roff_free(struct roff *r)
778: {
779: roff_free1(r);
1.295 schwarze 780: roffhash_free(r->reqtab);
1.67 kristaps 781: free(r);
782: }
783:
784: struct roff *
1.279 schwarze 785: roff_alloc(struct mparse *parse, int options)
1.67 kristaps 786: {
787: struct roff *r;
788:
1.98 schwarze 789: r = mandoc_calloc(1, sizeof(struct roff));
1.128 kristaps 790: r->parse = parse;
1.295 schwarze 791: r->reqtab = roffhash_alloc(0, ROFF_USERDEF);
1.199 schwarze 792: r->options = options;
1.227 schwarze 793: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.82 kristaps 794: r->rstackpos = -1;
1.303 schwarze 795: r->escape = '\\';
1.277 schwarze 796: return r;
1.265 schwarze 797: }
798:
1.266 schwarze 799: /* --- syntax tree state data management ---------------------------------- */
800:
1.265 schwarze 801: static void
802: roff_man_free1(struct roff_man *man)
803: {
804:
1.266 schwarze 805: if (man->first != NULL)
806: roff_node_delete(man, man->first);
1.265 schwarze 807: free(man->meta.msec);
808: free(man->meta.vol);
809: free(man->meta.os);
810: free(man->meta.arch);
811: free(man->meta.title);
812: free(man->meta.name);
813: free(man->meta.date);
814: }
815:
816: static void
817: roff_man_alloc1(struct roff_man *man)
818: {
819:
820: memset(&man->meta, 0, sizeof(man->meta));
821: man->first = mandoc_calloc(1, sizeof(*man->first));
822: man->first->type = ROFFT_ROOT;
823: man->last = man->first;
824: man->last_es = NULL;
825: man->flags = 0;
826: man->macroset = MACROSET_NONE;
827: man->lastsec = man->lastnamed = SEC_NONE;
828: man->next = ROFF_NEXT_CHILD;
829: }
830:
831: void
832: roff_man_reset(struct roff_man *man)
833: {
834:
835: roff_man_free1(man);
836: roff_man_alloc1(man);
837: }
838:
839: void
840: roff_man_free(struct roff_man *man)
841: {
842:
843: roff_man_free1(man);
844: free(man);
845: }
846:
847: struct roff_man *
848: roff_man_alloc(struct roff *roff, struct mparse *parse,
849: const char *defos, int quick)
850: {
851: struct roff_man *man;
852:
853: man = mandoc_calloc(1, sizeof(*man));
854: man->parse = parse;
855: man->roff = roff;
856: man->defos = defos;
857: man->quick = quick;
858: roff_man_alloc1(man);
1.296 schwarze 859: roff->man = man;
1.277 schwarze 860: return man;
1.67 kristaps 861: }
862:
1.266 schwarze 863: /* --- syntax tree handling ----------------------------------------------- */
864:
865: struct roff_node *
866: roff_node_alloc(struct roff_man *man, int line, int pos,
867: enum roff_type type, int tok)
868: {
869: struct roff_node *n;
870:
871: n = mandoc_calloc(1, sizeof(*n));
872: n->line = line;
873: n->pos = pos;
874: n->tok = tok;
875: n->type = type;
876: n->sec = man->lastsec;
877:
878: if (man->flags & MDOC_SYNOPSIS)
1.285 schwarze 879: n->flags |= NODE_SYNPRETTY;
1.266 schwarze 880: else
1.285 schwarze 881: n->flags &= ~NODE_SYNPRETTY;
1.266 schwarze 882: if (man->flags & MDOC_NEWLINE)
1.285 schwarze 883: n->flags |= NODE_LINE;
1.266 schwarze 884: man->flags &= ~MDOC_NEWLINE;
885:
1.277 schwarze 886: return n;
1.266 schwarze 887: }
888:
889: void
890: roff_node_append(struct roff_man *man, struct roff_node *n)
891: {
892:
893: switch (man->next) {
894: case ROFF_NEXT_SIBLING:
1.281 schwarze 895: if (man->last->next != NULL) {
896: n->next = man->last->next;
897: man->last->next->prev = n;
898: } else
899: man->last->parent->last = n;
1.266 schwarze 900: man->last->next = n;
901: n->prev = man->last;
902: n->parent = man->last->parent;
903: break;
904: case ROFF_NEXT_CHILD:
1.287 schwarze 905: if (man->last->child != NULL) {
906: n->next = man->last->child;
907: man->last->child->prev = n;
908: } else
909: man->last->last = n;
1.266 schwarze 910: man->last->child = n;
911: n->parent = man->last;
912: break;
913: default:
914: abort();
915: }
1.282 schwarze 916: man->last = n;
1.266 schwarze 917:
918: switch (n->type) {
919: case ROFFT_HEAD:
920: n->parent->head = n;
921: break;
922: case ROFFT_BODY:
1.282 schwarze 923: if (n->end != ENDBODY_NOT)
924: return;
1.266 schwarze 925: n->parent->body = n;
926: break;
927: case ROFFT_TAIL:
928: n->parent->tail = n;
929: break;
930: default:
1.282 schwarze 931: return;
1.266 schwarze 932: }
1.282 schwarze 933:
934: /*
935: * Copy over the normalised-data pointer of our parent. Not
936: * everybody has one, but copying a null pointer is fine.
937: */
938:
939: n->norm = n->parent->norm;
940: assert(n->parent->type == ROFFT_BLOCK);
1.266 schwarze 941: }
942:
1.267 schwarze 943: void
944: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
945: {
946: struct roff_node *n;
947:
948: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
949: n->string = roff_strdup(man->roff, word);
950: roff_node_append(man, n);
1.286 schwarze 951: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 952: man->next = ROFF_NEXT_SIBLING;
953: }
954:
955: void
956: roff_word_append(struct roff_man *man, const char *word)
957: {
958: struct roff_node *n;
959: char *addstr, *newstr;
960:
961: n = man->last;
962: addstr = roff_strdup(man->roff, word);
963: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
964: free(addstr);
965: free(n->string);
966: n->string = newstr;
967: man->next = ROFF_NEXT_SIBLING;
1.268 schwarze 968: }
969:
970: void
971: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
972: {
973: struct roff_node *n;
974:
975: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
976: roff_node_append(man, n);
977: man->next = ROFF_NEXT_CHILD;
978: }
979:
980: struct roff_node *
981: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
982: {
983: struct roff_node *n;
984:
985: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
986: roff_node_append(man, n);
987: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 988: return n;
1.267 schwarze 989: }
990:
1.266 schwarze 991: struct roff_node *
992: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
993: {
994: struct roff_node *n;
995:
996: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
997: roff_node_append(man, n);
998: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 999: return n;
1.266 schwarze 1000: }
1001:
1002: struct roff_node *
1003: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1004: {
1005: struct roff_node *n;
1006:
1007: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1008: roff_node_append(man, n);
1009: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1010: return n;
1.267 schwarze 1011: }
1012:
1013: void
1014: roff_addeqn(struct roff_man *man, const struct eqn *eqn)
1015: {
1016: struct roff_node *n;
1017:
1018: n = roff_node_alloc(man, eqn->ln, eqn->pos, ROFFT_EQN, TOKEN_NONE);
1019: n->eqn = eqn;
1020: if (eqn->ln > man->last->line)
1.285 schwarze 1021: n->flags |= NODE_LINE;
1.267 schwarze 1022: roff_node_append(man, n);
1023: man->next = ROFF_NEXT_SIBLING;
1024: }
1025:
1026: void
1027: roff_addtbl(struct roff_man *man, const struct tbl_span *tbl)
1028: {
1029: struct roff_node *n;
1030:
1031: if (man->macroset == MACROSET_MAN)
1.302 schwarze 1032: man_breakscope(man, ROFF_TS);
1.267 schwarze 1033: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
1034: n->span = tbl;
1035: roff_node_append(man, n);
1.286 schwarze 1036: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 1037: man->next = ROFF_NEXT_SIBLING;
1.266 schwarze 1038: }
1039:
1040: void
1041: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1042: {
1043:
1044: /* Adjust siblings. */
1045:
1046: if (n->prev)
1047: n->prev->next = n->next;
1048: if (n->next)
1049: n->next->prev = n->prev;
1050:
1051: /* Adjust parent. */
1052:
1053: if (n->parent != NULL) {
1054: if (n->parent->child == n)
1055: n->parent->child = n->next;
1056: if (n->parent->last == n)
1057: n->parent->last = n->prev;
1058: }
1059:
1060: /* Adjust parse point. */
1061:
1062: if (man == NULL)
1063: return;
1064: if (man->last == n) {
1065: if (n->prev == NULL) {
1066: man->last = n->parent;
1067: man->next = ROFF_NEXT_CHILD;
1068: } else {
1069: man->last = n->prev;
1070: man->next = ROFF_NEXT_SIBLING;
1071: }
1072: }
1073: if (man->first == n)
1074: man->first = NULL;
1075: }
1076:
1077: void
1078: roff_node_free(struct roff_node *n)
1079: {
1080:
1081: if (n->args != NULL)
1082: mdoc_argv_free(n->args);
1083: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1084: free(n->norm);
1085: free(n->string);
1086: free(n);
1087: }
1088:
1089: void
1090: roff_node_delete(struct roff_man *man, struct roff_node *n)
1091: {
1092:
1093: while (n->child != NULL)
1094: roff_node_delete(man, n->child);
1095: roff_node_unlink(man, n);
1096: roff_node_free(n);
1.269 schwarze 1097: }
1098:
1099: void
1100: deroff(char **dest, const struct roff_node *n)
1101: {
1102: char *cp;
1103: size_t sz;
1104:
1105: if (n->type != ROFFT_TEXT) {
1106: for (n = n->child; n != NULL; n = n->next)
1107: deroff(dest, n);
1108: return;
1109: }
1110:
1.288 schwarze 1111: /* Skip leading whitespace. */
1.269 schwarze 1112:
1.288 schwarze 1113: for (cp = n->string; *cp != '\0'; cp++) {
1.289 schwarze 1114: if (cp[0] == '\\' && cp[1] != '\0' &&
1115: strchr(" %&0^|~", cp[1]) != NULL)
1.269 schwarze 1116: cp++;
1.288 schwarze 1117: else if ( ! isspace((unsigned char)*cp))
1.269 schwarze 1118: break;
1119: }
1120:
1.289 schwarze 1121: /* Skip trailing backslash. */
1122:
1123: sz = strlen(cp);
1.290 schwarze 1124: if (sz > 0 && cp[sz - 1] == '\\')
1.289 schwarze 1125: sz--;
1126:
1.269 schwarze 1127: /* Skip trailing whitespace. */
1128:
1.289 schwarze 1129: for (; sz; sz--)
1.269 schwarze 1130: if ( ! isspace((unsigned char)cp[sz-1]))
1131: break;
1132:
1133: /* Skip empty strings. */
1134:
1135: if (sz == 0)
1136: return;
1137:
1138: if (*dest == NULL) {
1139: *dest = mandoc_strndup(cp, sz);
1140: return;
1141: }
1142:
1143: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1144: free(*dest);
1145: *dest = cp;
1.266 schwarze 1146: }
1147:
1148: /* --- main functions of the roff parser ---------------------------------- */
1149:
1.94 kristaps 1150: /*
1.206 schwarze 1151: * In the current line, expand escape sequences that tend to get
1152: * used in numerical expressions and conditional requests.
1153: * Also check the syntax of the remaining escape sequences.
1.154 kristaps 1154: */
1.172 schwarze 1155: static enum rofferr
1.238 schwarze 1156: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.94 kristaps 1157: {
1.208 schwarze 1158: char ubuf[24]; /* buffer to print the number */
1.205 schwarze 1159: const char *start; /* start of the string to process */
1.209 schwarze 1160: char *stesc; /* start of an escape sequence ('\\') */
1.108 schwarze 1161: const char *stnam; /* start of the name, after "[(*" */
1162: const char *cp; /* end of the name, e.g. before ']' */
1163: const char *res; /* the string to be substituted */
1.238 schwarze 1164: char *nbuf; /* new buffer to copy buf->buf to */
1.181 schwarze 1165: size_t maxl; /* expected length of the escape name */
1166: size_t naml; /* actual length of the escape name */
1.237 schwarze 1167: enum mandoc_esc esc; /* type of the escape sequence */
1168: int inaml; /* length returned from mandoc_escape() */
1.181 schwarze 1169: int expand_count; /* to avoid infinite loops */
1.206 schwarze 1170: int npos; /* position in numeric expression */
1.218 schwarze 1171: int arg_complete; /* argument not interrupted by eol */
1.303 schwarze 1172: int done; /* no more input available */
1.206 schwarze 1173: char term; /* character terminating the escape */
1.94 kristaps 1174:
1.303 schwarze 1175: /* Search forward for comments. */
1176:
1177: done = 0;
1178: start = buf->buf + pos;
1179: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1180: if (stesc[0] != r->escape || stesc[1] == '\0')
1181: continue;
1182: stesc++;
1183: if (*stesc != '"' && *stesc != '#')
1184: continue;
1185: cp = strchr(stesc--, '\0') - 1;
1186: if (*cp == '\n') {
1187: done = 1;
1188: cp--;
1189: }
1190: if (*cp == ' ' || *cp == '\t')
1191: mandoc_msg(MANDOCERR_SPACE_EOL, r->parse,
1192: ln, cp - buf->buf, NULL);
1193: while (stesc > start && stesc[-1] == ' ')
1194: stesc--;
1195: *stesc = '\0';
1196: break;
1197: }
1198: if (stesc == start)
1199: return ROFF_CONT;
1200: stesc--;
1201:
1202: /* Notice the end of the input. */
1203:
1204: if (*stesc == '\n') {
1205: *stesc-- = '\0';
1206: done = 1;
1207: }
1208:
1.170 schwarze 1209: expand_count = 0;
1.303 schwarze 1210: while (stesc >= start) {
1.170 schwarze 1211:
1.205 schwarze 1212: /* Search backwards for the next backslash. */
1213:
1.303 schwarze 1214: if (*stesc != r->escape) {
1215: if (*stesc == '\\') {
1216: *stesc = '\0';
1217: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1218: buf->buf, stesc + 1) + 1;
1219: start = nbuf + pos;
1220: stesc = nbuf + (stesc - buf->buf);
1221: free(buf->buf);
1222: buf->buf = nbuf;
1223: }
1224: stesc--;
1.205 schwarze 1225: continue;
1.303 schwarze 1226: }
1.205 schwarze 1227:
1228: /* If it is escaped, skip it. */
1229:
1230: for (cp = stesc - 1; cp >= start; cp--)
1.303 schwarze 1231: if (*cp != r->escape)
1.205 schwarze 1232: break;
1233:
1.238 schwarze 1234: if ((stesc - cp) % 2 == 0) {
1.303 schwarze 1235: while (stesc > cp)
1236: *stesc-- = '\\';
1.205 schwarze 1237: continue;
1.303 schwarze 1238: } else if (stesc[1] != '\0') {
1239: *stesc = '\\';
1240: } else {
1241: *stesc-- = '\0';
1242: if (done)
1243: continue;
1244: else
1245: return ROFF_APPEND;
1.205 schwarze 1246: }
1.108 schwarze 1247:
1.206 schwarze 1248: /* Decide whether to expand or to check only. */
1.108 schwarze 1249:
1.206 schwarze 1250: term = '\0';
1.205 schwarze 1251: cp = stesc + 1;
1.181 schwarze 1252: switch (*cp) {
1.207 schwarze 1253: case '*':
1.181 schwarze 1254: res = NULL;
1255: break;
1.207 schwarze 1256: case 'B':
1257: case 'w':
1.206 schwarze 1258: term = cp[1];
1259: /* FALLTHROUGH */
1.207 schwarze 1260: case 'n':
1.181 schwarze 1261: res = ubuf;
1262: break;
1263: default:
1.237 schwarze 1264: esc = mandoc_escape(&cp, &stnam, &inaml);
1265: if (esc == ESCAPE_ERROR ||
1266: (esc == ESCAPE_SPECIAL &&
1.279 schwarze 1267: mchars_spec2cp(stnam, inaml) < 0))
1.219 schwarze 1268: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.238 schwarze 1269: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1270: "%.*s", (int)(cp - stesc), stesc);
1.303 schwarze 1271: stesc--;
1.205 schwarze 1272: continue;
1.152 kristaps 1273: }
1274:
1.205 schwarze 1275: if (EXPAND_LIMIT < ++expand_count) {
1276: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.238 schwarze 1277: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1278: return ROFF_IGN;
1.205 schwarze 1279: }
1.108 schwarze 1280:
1281: /*
1282: * The third character decides the length
1.181 schwarze 1283: * of the name of the string or register.
1.108 schwarze 1284: * Save a pointer to the name.
1285: */
1286:
1.238 schwarze 1287: if (term == '\0') {
1.206 schwarze 1288: switch (*++cp) {
1.207 schwarze 1289: case '\0':
1.206 schwarze 1290: maxl = 0;
1291: break;
1.207 schwarze 1292: case '(':
1.206 schwarze 1293: cp++;
1294: maxl = 2;
1295: break;
1.207 schwarze 1296: case '[':
1.206 schwarze 1297: cp++;
1298: term = ']';
1299: maxl = 0;
1300: break;
1301: default:
1302: maxl = 1;
1303: break;
1304: }
1305: } else {
1306: cp += 2;
1.94 kristaps 1307: maxl = 0;
1308: }
1.108 schwarze 1309: stnam = cp;
1.94 kristaps 1310:
1.108 schwarze 1311: /* Advance to the end of the name. */
1.94 kristaps 1312:
1.253 schwarze 1313: naml = 0;
1.218 schwarze 1314: arg_complete = 1;
1.253 schwarze 1315: while (maxl == 0 || naml < maxl) {
1.238 schwarze 1316: if (*cp == '\0') {
1.219 schwarze 1317: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 1318: ln, (int)(stesc - buf->buf), stesc);
1.218 schwarze 1319: arg_complete = 0;
1.206 schwarze 1320: break;
1.153 kristaps 1321: }
1.238 schwarze 1322: if (maxl == 0 && *cp == term) {
1.206 schwarze 1323: cp++;
1.253 schwarze 1324: break;
1325: }
1326: if (*cp++ != '\\' || stesc[1] != 'w') {
1327: naml++;
1328: continue;
1329: }
1330: switch (mandoc_escape(&cp, NULL, NULL)) {
1331: case ESCAPE_SPECIAL:
1332: case ESCAPE_UNICODE:
1333: case ESCAPE_NUMBERED:
1334: case ESCAPE_OVERSTRIKE:
1335: naml++;
1336: break;
1337: default:
1.94 kristaps 1338: break;
1.206 schwarze 1339: }
1.94 kristaps 1340: }
1341:
1.108 schwarze 1342: /*
1343: * Retrieve the replacement string; if it is
1344: * undefined, resume searching for escapes.
1345: */
1346:
1.206 schwarze 1347: switch (stesc[1]) {
1.207 schwarze 1348: case '*':
1.218 schwarze 1349: if (arg_complete)
1350: res = roff_getstrn(r, stnam, naml);
1.206 schwarze 1351: break;
1.207 schwarze 1352: case 'B':
1.206 schwarze 1353: npos = 0;
1.218 schwarze 1354: ubuf[0] = arg_complete &&
1.261 schwarze 1355: roff_evalnum(r, ln, stnam, &npos,
1356: NULL, ROFFNUM_SCALE) &&
1.218 schwarze 1357: stnam + npos + 1 == cp ? '1' : '0';
1.206 schwarze 1358: ubuf[1] = '\0';
1359: break;
1.207 schwarze 1360: case 'n':
1.218 schwarze 1361: if (arg_complete)
1362: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1363: roff_getregn(r, stnam, naml));
1364: else
1365: ubuf[0] = '\0';
1.206 schwarze 1366: break;
1.207 schwarze 1367: case 'w':
1.218 schwarze 1368: /* use even incomplete args */
1.208 schwarze 1369: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.206 schwarze 1370: 24 * (int)naml);
1371: break;
1372: }
1.94 kristaps 1373:
1.238 schwarze 1374: if (res == NULL) {
1.219 schwarze 1375: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1376: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1377: "%.*s", (int)naml, stnam);
1.142 kristaps 1378: res = "";
1.246 schwarze 1379: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1380: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1381: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1382: return ROFF_IGN;
1.94 kristaps 1383: }
1384:
1.108 schwarze 1385: /* Replace the escape sequence by the string. */
1386:
1.209 schwarze 1387: *stesc = '\0';
1.238 schwarze 1388: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1389: buf->buf, res, cp) + 1;
1.94 kristaps 1390:
1.205 schwarze 1391: /* Prepare for the next replacement. */
1.94 kristaps 1392:
1.205 schwarze 1393: start = nbuf + pos;
1.238 schwarze 1394: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1395: free(buf->buf);
1396: buf->buf = nbuf;
1.154 kristaps 1397: }
1.277 schwarze 1398: return ROFF_CONT;
1.154 kristaps 1399: }
1400:
1401: /*
1.275 schwarze 1402: * Process text streams.
1.154 kristaps 1403: */
1404: static enum rofferr
1.305 schwarze 1405: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.154 kristaps 1406: {
1407: size_t sz;
1408: const char *start;
1.178 schwarze 1409: char *p;
1410: int isz;
1.154 kristaps 1411: enum mandoc_esc esc;
1412:
1.275 schwarze 1413: /* Spring the input line trap. */
1414:
1415: if (roffit_lines == 1) {
1416: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1417: free(buf->buf);
1418: buf->buf = p;
1419: buf->sz = isz + 1;
1420: *offs = 0;
1421: free(roffit_macro);
1422: roffit_lines = 0;
1.277 schwarze 1423: return ROFF_REPARSE;
1.275 schwarze 1424: } else if (roffit_lines > 1)
1425: --roffit_lines;
1426:
1.305 schwarze 1427: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1428: if (roffce_lines < 1) {
1429: r->man->last = roffce_node;
1430: r->man->next = ROFF_NEXT_SIBLING;
1431: roffce_lines = 0;
1432: roffce_node = NULL;
1433: } else
1434: roffce_lines--;
1435: }
1436:
1.275 schwarze 1437: /* Convert all breakable hyphens into ASCII_HYPH. */
1438:
1.238 schwarze 1439: start = p = buf->buf + pos;
1.154 kristaps 1440:
1.238 schwarze 1441: while (*p != '\0') {
1.154 kristaps 1442: sz = strcspn(p, "-\\");
1443: p += sz;
1444:
1.238 schwarze 1445: if (*p == '\0')
1.159 kristaps 1446: break;
1447:
1.238 schwarze 1448: if (*p == '\\') {
1.154 kristaps 1449: /* Skip over escapes. */
1450: p++;
1.189 schwarze 1451: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.238 schwarze 1452: if (esc == ESCAPE_ERROR)
1.154 kristaps 1453: break;
1.264 schwarze 1454: while (*p == '-')
1455: p++;
1.155 kristaps 1456: continue;
1.159 kristaps 1457: } else if (p == start) {
1.158 kristaps 1458: p++;
1.155 kristaps 1459: continue;
1.158 kristaps 1460: }
1.155 kristaps 1461:
1.171 schwarze 1462: if (isalpha((unsigned char)p[-1]) &&
1463: isalpha((unsigned char)p[1]))
1.155 kristaps 1464: *p = ASCII_HYPH;
1465: p++;
1.94 kristaps 1466: }
1.277 schwarze 1467: return ROFF_CONT;
1.94 kristaps 1468: }
1469:
1.67 kristaps 1470: enum rofferr
1.238 schwarze 1471: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.67 kristaps 1472: {
1.294 schwarze 1473: enum roff_tok t;
1.109 kristaps 1474: enum rofferr e;
1.238 schwarze 1475: int pos; /* parse point */
1.243 schwarze 1476: int spos; /* saved parse point for messages */
1.238 schwarze 1477: int ppos; /* original offset in buf->buf */
1478: int ctl; /* macro line (boolean) */
1479:
1480: ppos = pos = *offs;
1.79 kristaps 1481:
1.230 schwarze 1482: /* Handle in-line equation delimiters. */
1483:
1.236 schwarze 1484: if (r->tbl == NULL &&
1485: r->last_eqn != NULL && r->last_eqn->delim &&
1.230 schwarze 1486: (r->eqn == NULL || r->eqn_inline)) {
1.238 schwarze 1487: e = roff_eqndelim(r, buf, pos);
1.230 schwarze 1488: if (e == ROFF_REPARSE)
1.277 schwarze 1489: return e;
1.230 schwarze 1490: assert(e == ROFF_CONT);
1491: }
1492:
1493: /* Expand some escape sequences. */
1.94 kristaps 1494:
1.238 schwarze 1495: e = roff_res(r, buf, ln, pos);
1.303 schwarze 1496: if (e == ROFF_IGN || e == ROFF_APPEND)
1.277 schwarze 1497: return e;
1.238 schwarze 1498: assert(e == ROFF_CONT);
1.94 kristaps 1499:
1.238 schwarze 1500: ctl = roff_getcontrol(r, buf->buf, &pos);
1.130 kristaps 1501:
1.94 kristaps 1502: /*
1.79 kristaps 1503: * First, if a scope is open and we're not a macro, pass the
1.252 schwarze 1504: * text through the macro's filter.
1505: * Equations process all content themselves.
1506: * Tables process almost all content themselves, but we want
1507: * to warn about macros before passing it there.
1.79 kristaps 1508: */
1.74 kristaps 1509:
1.252 schwarze 1510: if (r->last != NULL && ! ctl) {
1.78 kristaps 1511: t = r->last->tok;
1.238 schwarze 1512: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.294 schwarze 1513: if (e == ROFF_IGN)
1.277 schwarze 1514: return e;
1.294 schwarze 1515: assert(e == ROFF_CONT);
1.182 schwarze 1516: }
1.252 schwarze 1517: if (r->eqn != NULL)
1.277 schwarze 1518: return eqn_read(&r->eqn, ln, buf->buf, ppos, offs);
1.252 schwarze 1519: if (r->tbl != NULL && ( ! ctl || buf->buf[pos] == '\0'))
1.277 schwarze 1520: return tbl_read(r->tbl, ln, buf->buf, ppos);
1.252 schwarze 1521: if ( ! ctl)
1.305 schwarze 1522: return roff_parsetext(r, buf, pos, offs);
1.228 schwarze 1523:
1524: /* Skip empty request lines. */
1525:
1.238 schwarze 1526: if (buf->buf[pos] == '"') {
1.228 schwarze 1527: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1528: ln, pos, NULL);
1.277 schwarze 1529: return ROFF_IGN;
1.238 schwarze 1530: } else if (buf->buf[pos] == '\0')
1.277 schwarze 1531: return ROFF_IGN;
1.67 kristaps 1532:
1.79 kristaps 1533: /*
1534: * If a scope is open, go to the child handler for that macro,
1535: * as it may want to preprocess before doing anything with it.
1.125 kristaps 1536: * Don't do so if an equation is open.
1.79 kristaps 1537: */
1.78 kristaps 1538:
1.79 kristaps 1539: if (r->last) {
1540: t = r->last->tok;
1.277 schwarze 1541: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1542: }
1.78 kristaps 1543:
1.243 schwarze 1544: /* No scope is open. This is a new request or macro. */
1545:
1546: spos = pos;
1547: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1548:
1549: /* Tables ignore most macros. */
1550:
1.308 schwarze 1551: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.309 schwarze 1552: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.243 schwarze 1553: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1554: ln, pos, buf->buf + spos);
1.308 schwarze 1555: if (t != TOKEN_NONE)
1.277 schwarze 1556: return ROFF_IGN;
1.257 schwarze 1557: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1558: pos++;
1.291 schwarze 1559: while (buf->buf[pos] == ' ')
1.257 schwarze 1560: pos++;
1.277 schwarze 1561: return tbl_read(r->tbl, ln, buf->buf, pos);
1.243 schwarze 1562: }
1563:
1.305 schwarze 1564: /* For now, let high level macros abort .ce mode. */
1565:
1566: if (ctl && roffce_node != NULL &&
1567: (t == TOKEN_NONE || t == ROFF_EQ || t == ROFF_TS)) {
1568: r->man->last = roffce_node;
1569: r->man->next = ROFF_NEXT_SIBLING;
1570: roffce_lines = 0;
1571: roffce_node = NULL;
1572: }
1573:
1.79 kristaps 1574: /*
1.243 schwarze 1575: * This is neither a roff request nor a user-defined macro.
1576: * Let the standard macro set parsers handle it.
1.79 kristaps 1577: */
1.67 kristaps 1578:
1.294 schwarze 1579: if (t == TOKEN_NONE)
1.277 schwarze 1580: return ROFF_CONT;
1.243 schwarze 1581:
1582: /* Execute a roff request or a user defined macro. */
1.67 kristaps 1583:
1.296 schwarze 1584: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.74 kristaps 1585: }
1586:
1.117 kristaps 1587: void
1.74 kristaps 1588: roff_endparse(struct roff *r)
1589: {
1590:
1.110 kristaps 1591: if (r->last)
1.221 schwarze 1592: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1593: r->last->line, r->last->col,
1.295 schwarze 1594: roff_name[r->last->tok]);
1.117 kristaps 1595:
1.125 kristaps 1596: if (r->eqn) {
1.221 schwarze 1597: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1598: r->eqn->eqn.ln, r->eqn->eqn.pos, "EQ");
1.151 kristaps 1599: eqn_end(&r->eqn);
1.125 kristaps 1600: }
1601:
1.117 kristaps 1602: if (r->tbl) {
1.221 schwarze 1603: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1604: r->tbl->line, r->tbl->pos, "TS");
1.151 kristaps 1605: tbl_end(&r->tbl);
1.117 kristaps 1606: }
1.67 kristaps 1607: }
1608:
1609: /*
1610: * Parse a roff node's type from the input buffer. This must be in the
1611: * form of ".foo xxx" in the usual way.
1612: */
1.294 schwarze 1613: static enum roff_tok
1.214 schwarze 1614: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.67 kristaps 1615: {
1.214 schwarze 1616: char *cp;
1.106 kristaps 1617: const char *mac;
1618: size_t maclen;
1.294 schwarze 1619: enum roff_tok t;
1.67 kristaps 1620:
1.214 schwarze 1621: cp = buf + *pos;
1622:
1623: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.294 schwarze 1624: return TOKEN_NONE;
1.67 kristaps 1625:
1.214 schwarze 1626: mac = cp;
1627: maclen = roff_getname(r, &cp, ln, ppos);
1.67 kristaps 1628:
1.306 schwarze 1629: t = (r->current_string = roff_getstrn(r, mac, maclen)) ?
1630: ROFF_USERDEF :
1631: (r->current_string = roff_getrenn(r, mac, maclen)) ?
1632: ROFF_RENAMED : roffhash_find(r->reqtab, mac, maclen);
1.67 kristaps 1633:
1.294 schwarze 1634: if (t != TOKEN_NONE)
1.214 schwarze 1635: *pos = cp - buf;
1.67 kristaps 1636:
1.277 schwarze 1637: return t;
1.67 kristaps 1638: }
1639:
1.266 schwarze 1640: /* --- handling of request blocks ----------------------------------------- */
1641:
1.67 kristaps 1642: static enum rofferr
1.76 kristaps 1643: roff_cblock(ROFF_ARGS)
1.67 kristaps 1644: {
1645:
1.79 kristaps 1646: /*
1647: * A block-close `..' should only be invoked as a child of an
1648: * ignore macro, otherwise raise a warning and just ignore it.
1649: */
1650:
1.238 schwarze 1651: if (r->last == NULL) {
1.221 schwarze 1652: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1653: ln, ppos, "..");
1.277 schwarze 1654: return ROFF_IGN;
1.76 kristaps 1655: }
1.67 kristaps 1656:
1.81 kristaps 1657: switch (r->last->tok) {
1.207 schwarze 1658: case ROFF_am:
1.220 schwarze 1659: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.207 schwarze 1660: case ROFF_ami:
1661: case ROFF_de:
1.108 schwarze 1662: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.207 schwarze 1663: case ROFF_dei:
1664: case ROFF_ig:
1.81 kristaps 1665: break;
1666: default:
1.221 schwarze 1667: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1668: ln, ppos, "..");
1.277 schwarze 1669: return ROFF_IGN;
1.76 kristaps 1670: }
1.67 kristaps 1671:
1.238 schwarze 1672: if (buf->buf[pos] != '\0')
1.217 schwarze 1673: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 1674: ".. %s", buf->buf + pos);
1.71 kristaps 1675:
1676: roffnode_pop(r);
1.76 kristaps 1677: roffnode_cleanscope(r);
1.277 schwarze 1678: return ROFF_IGN;
1.71 kristaps 1679:
1.67 kristaps 1680: }
1681:
1.76 kristaps 1682: static void
1683: roffnode_cleanscope(struct roff *r)
1.67 kristaps 1684: {
1685:
1.76 kristaps 1686: while (r->last) {
1.173 schwarze 1687: if (--r->last->endspan != 0)
1.76 kristaps 1688: break;
1689: roffnode_pop(r);
1690: }
1.67 kristaps 1691: }
1692:
1.195 schwarze 1693: static void
1694: roff_ccond(struct roff *r, int ln, int ppos)
1.74 kristaps 1695: {
1696:
1.76 kristaps 1697: if (NULL == r->last) {
1.221 schwarze 1698: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1699: ln, ppos, "\\}");
1.195 schwarze 1700: return;
1.76 kristaps 1701: }
1702:
1.82 kristaps 1703: switch (r->last->tok) {
1.207 schwarze 1704: case ROFF_el:
1705: case ROFF_ie:
1706: case ROFF_if:
1.82 kristaps 1707: break;
1708: default:
1.221 schwarze 1709: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1710: ln, ppos, "\\}");
1.195 schwarze 1711: return;
1.75 kristaps 1712: }
1713:
1.76 kristaps 1714: if (r->last->endspan > -1) {
1.221 schwarze 1715: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1716: ln, ppos, "\\}");
1.195 schwarze 1717: return;
1.76 kristaps 1718: }
1719:
1.75 kristaps 1720: roffnode_pop(r);
1.76 kristaps 1721: roffnode_cleanscope(r);
1.195 schwarze 1722: return;
1.76 kristaps 1723: }
1724:
1725: static enum rofferr
1.80 kristaps 1726: roff_block(ROFF_ARGS)
1.76 kristaps 1727: {
1.220 schwarze 1728: const char *name;
1729: char *iname, *cp;
1.213 schwarze 1730: size_t namesz;
1.106 kristaps 1731:
1.220 schwarze 1732: /* Ignore groff compatibility mode for now. */
1.76 kristaps 1733:
1.238 schwarze 1734: if (tok == ROFF_de1)
1.220 schwarze 1735: tok = ROFF_de;
1.251 schwarze 1736: else if (tok == ROFF_dei1)
1737: tok = ROFF_dei;
1.238 schwarze 1738: else if (tok == ROFF_am1)
1.220 schwarze 1739: tok = ROFF_am;
1.251 schwarze 1740: else if (tok == ROFF_ami1)
1741: tok = ROFF_ami;
1.220 schwarze 1742:
1743: /* Parse the macro name argument. */
1744:
1.238 schwarze 1745: cp = buf->buf + pos;
1746: if (tok == ROFF_ig) {
1.220 schwarze 1747: iname = NULL;
1748: namesz = 0;
1749: } else {
1750: iname = cp;
1751: namesz = roff_getname(r, &cp, ln, ppos);
1752: iname[namesz] = '\0';
1753: }
1.107 kristaps 1754:
1.220 schwarze 1755: /* Resolve the macro name argument if it is indirect. */
1.107 kristaps 1756:
1.238 schwarze 1757: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1758: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.220 schwarze 1759: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1760: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1761: "%.*s", (int)namesz, iname);
1762: namesz = 0;
1763: } else
1764: namesz = strlen(name);
1765: } else
1766: name = iname;
1.107 kristaps 1767:
1.238 schwarze 1768: if (namesz == 0 && tok != ROFF_ig) {
1.220 schwarze 1769: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1.295 schwarze 1770: ln, ppos, roff_name[tok]);
1.277 schwarze 1771: return ROFF_IGN;
1.220 schwarze 1772: }
1.80 kristaps 1773:
1.106 kristaps 1774: roffnode_push(r, tok, name, ln, ppos);
1775:
1776: /*
1777: * At the beginning of a `de' macro, clear the existing string
1778: * with the same name, if there is one. New content will be
1.193 schwarze 1779: * appended from roff_block_text() in multiline mode.
1.106 kristaps 1780: */
1.107 kristaps 1781:
1.238 schwarze 1782: if (tok == ROFF_de || tok == ROFF_dei)
1.213 schwarze 1783: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.76 kristaps 1784:
1.238 schwarze 1785: if (*cp == '\0')
1.277 schwarze 1786: return ROFF_IGN;
1.78 kristaps 1787:
1.220 schwarze 1788: /* Get the custom end marker. */
1.107 kristaps 1789:
1.220 schwarze 1790: iname = cp;
1.213 schwarze 1791: namesz = roff_getname(r, &cp, ln, ppos);
1.220 schwarze 1792:
1793: /* Resolve the end marker if it is indirect. */
1794:
1.238 schwarze 1795: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1796: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.220 schwarze 1797: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1798: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1799: "%.*s", (int)namesz, iname);
1800: namesz = 0;
1801: } else
1802: namesz = strlen(name);
1803: } else
1804: name = iname;
1805:
1.213 schwarze 1806: if (namesz)
1807: r->last->end = mandoc_strndup(name, namesz);
1.78 kristaps 1808:
1.238 schwarze 1809: if (*cp != '\0')
1.217 schwarze 1810: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1.295 schwarze 1811: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.74 kristaps 1812:
1.277 schwarze 1813: return ROFF_IGN;
1.78 kristaps 1814: }
1815:
1816: static enum rofferr
1.80 kristaps 1817: roff_block_sub(ROFF_ARGS)
1.79 kristaps 1818: {
1.294 schwarze 1819: enum roff_tok t;
1.79 kristaps 1820: int i, j;
1821:
1822: /*
1823: * First check whether a custom macro exists at this level. If
1824: * it does, then check against it. This is some of groff's
1825: * stranger behaviours. If we encountered a custom end-scope
1826: * tag and that tag also happens to be a "real" macro, then we
1827: * need to try interpreting it again as a real macro. If it's
1828: * not, then return ignore. Else continue.
1829: */
1830:
1831: if (r->last->end) {
1.130 kristaps 1832: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.238 schwarze 1833: if (buf->buf[i] != r->last->end[j])
1.79 kristaps 1834: break;
1835:
1.238 schwarze 1836: if (r->last->end[j] == '\0' &&
1837: (buf->buf[i] == '\0' ||
1838: buf->buf[i] == ' ' ||
1839: buf->buf[i] == '\t')) {
1.79 kristaps 1840: roffnode_pop(r);
1841: roffnode_cleanscope(r);
1842:
1.238 schwarze 1843: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.130 kristaps 1844: i++;
1845:
1846: pos = i;
1.238 schwarze 1847: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.294 schwarze 1848: TOKEN_NONE)
1.277 schwarze 1849: return ROFF_RERUN;
1850: return ROFF_IGN;
1.79 kristaps 1851: }
1852: }
1853:
1854: /*
1855: * If we have no custom end-query or lookup failed, then try
1856: * pulling it out of the hashtable.
1857: */
1858:
1.238 schwarze 1859: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.79 kristaps 1860:
1.238 schwarze 1861: if (t != ROFF_cblock) {
1862: if (tok != ROFF_ig)
1863: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.277 schwarze 1864: return ROFF_IGN;
1.106 kristaps 1865: }
1.79 kristaps 1866:
1.277 schwarze 1867: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1868: }
1869:
1870: static enum rofferr
1.80 kristaps 1871: roff_block_text(ROFF_ARGS)
1.78 kristaps 1872: {
1873:
1.238 schwarze 1874: if (tok != ROFF_ig)
1875: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.106 kristaps 1876:
1.277 schwarze 1877: return ROFF_IGN;
1.78 kristaps 1878: }
1879:
1880: static enum rofferr
1.82 kristaps 1881: roff_cond_sub(ROFF_ARGS)
1882: {
1.294 schwarze 1883: enum roff_tok t;
1.139 kristaps 1884: char *ep;
1.198 schwarze 1885: int rr;
1.82 kristaps 1886:
1887: rr = r->last->rule;
1.139 kristaps 1888: roffnode_cleanscope(r);
1.238 schwarze 1889: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.82 kristaps 1890:
1.139 kristaps 1891: /*
1.177 schwarze 1892: * Fully handle known macros when they are structurally
1893: * required or when the conditional evaluated to true.
1.87 kristaps 1894: */
1895:
1.294 schwarze 1896: if (t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT))
1.277 schwarze 1897: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.144 kristaps 1898:
1.196 schwarze 1899: /*
1900: * If `\}' occurs on a macro line without a preceding macro,
1901: * drop the line completely.
1902: */
1903:
1.238 schwarze 1904: ep = buf->buf + pos;
1905: if (ep[0] == '\\' && ep[1] == '}')
1.198 schwarze 1906: rr = 0;
1.196 schwarze 1907:
1.177 schwarze 1908: /* Always check for the closing delimiter `\}'. */
1.144 kristaps 1909:
1.238 schwarze 1910: while ((ep = strchr(ep, '\\')) != NULL) {
1911: if (*(++ep) == '}') {
1.197 schwarze 1912: *ep = '&';
1.238 schwarze 1913: roff_ccond(r, ln, ep - buf->buf - 1);
1.197 schwarze 1914: }
1.247 schwarze 1915: if (*ep != '\0')
1916: ++ep;
1.177 schwarze 1917: }
1.277 schwarze 1918: return rr ? ROFF_CONT : ROFF_IGN;
1.82 kristaps 1919: }
1920:
1921: static enum rofferr
1922: roff_cond_text(ROFF_ARGS)
1.78 kristaps 1923: {
1.140 kristaps 1924: char *ep;
1.198 schwarze 1925: int rr;
1.82 kristaps 1926:
1927: rr = r->last->rule;
1.140 kristaps 1928: roffnode_cleanscope(r);
1.82 kristaps 1929:
1.238 schwarze 1930: ep = buf->buf + pos;
1931: while ((ep = strchr(ep, '\\')) != NULL) {
1932: if (*(++ep) == '}') {
1.197 schwarze 1933: *ep = '&';
1.238 schwarze 1934: roff_ccond(r, ln, ep - buf->buf - 1);
1.197 schwarze 1935: }
1.247 schwarze 1936: if (*ep != '\0')
1937: ++ep;
1.78 kristaps 1938: }
1.277 schwarze 1939: return rr ? ROFF_CONT : ROFF_IGN;
1.74 kristaps 1940: }
1941:
1.266 schwarze 1942: /* --- handling of numeric and conditional expressions -------------------- */
1943:
1.204 schwarze 1944: /*
1945: * Parse a single signed integer number. Stop at the first non-digit.
1946: * If there is at least one digit, return success and advance the
1947: * parse point, else return failure and let the parse point unchanged.
1948: * Ignore overflows, treat them just like the C language.
1949: */
1.184 schwarze 1950: static int
1.261 schwarze 1951: roff_getnum(const char *v, int *pos, int *res, int flags)
1.184 schwarze 1952: {
1.261 schwarze 1953: int myres, scaled, n, p;
1.206 schwarze 1954:
1955: if (NULL == res)
1956: res = &myres;
1.184 schwarze 1957:
1958: p = *pos;
1959: n = v[p] == '-';
1.261 schwarze 1960: if (n || v[p] == '+')
1.184 schwarze 1961: p++;
1962:
1.261 schwarze 1963: if (flags & ROFFNUM_WHITE)
1964: while (isspace((unsigned char)v[p]))
1965: p++;
1966:
1.184 schwarze 1967: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.204 schwarze 1968: *res = 10 * *res + v[p] - '0';
1.184 schwarze 1969: if (p == *pos + n)
1970: return 0;
1971:
1972: if (n)
1973: *res = -*res;
1974:
1.254 schwarze 1975: /* Each number may be followed by one optional scaling unit. */
1976:
1977: switch (v[p]) {
1978: case 'f':
1.261 schwarze 1979: scaled = *res * 65536;
1.254 schwarze 1980: break;
1981: case 'i':
1.261 schwarze 1982: scaled = *res * 240;
1.254 schwarze 1983: break;
1984: case 'c':
1.261 schwarze 1985: scaled = *res * 240 / 2.54;
1.254 schwarze 1986: break;
1987: case 'v':
1988: case 'P':
1.261 schwarze 1989: scaled = *res * 40;
1.254 schwarze 1990: break;
1991: case 'm':
1992: case 'n':
1.261 schwarze 1993: scaled = *res * 24;
1.254 schwarze 1994: break;
1995: case 'p':
1.261 schwarze 1996: scaled = *res * 10 / 3;
1.254 schwarze 1997: break;
1998: case 'u':
1.261 schwarze 1999: scaled = *res;
1.254 schwarze 2000: break;
2001: case 'M':
1.261 schwarze 2002: scaled = *res * 6 / 25;
1.254 schwarze 2003: break;
2004: default:
1.261 schwarze 2005: scaled = *res;
1.254 schwarze 2006: p--;
2007: break;
2008: }
1.261 schwarze 2009: if (flags & ROFFNUM_SCALE)
2010: *res = scaled;
1.254 schwarze 2011:
2012: *pos = p + 1;
1.277 schwarze 2013: return 1;
1.184 schwarze 2014: }
2015:
1.198 schwarze 2016: /*
2017: * Evaluate a string comparison condition.
2018: * The first character is the delimiter.
2019: * Succeed if the string up to its second occurrence
2020: * matches the string up to its third occurence.
2021: * Advance the cursor after the third occurrence
2022: * or lacking that, to the end of the line.
2023: */
2024: static int
2025: roff_evalstrcond(const char *v, int *pos)
2026: {
2027: const char *s1, *s2, *s3;
2028: int match;
2029:
2030: match = 0;
2031: s1 = v + *pos; /* initial delimiter */
2032: s2 = s1 + 1; /* for scanning the first string */
2033: s3 = strchr(s2, *s1); /* for scanning the second string */
2034:
2035: if (NULL == s3) /* found no middle delimiter */
2036: goto out;
2037:
2038: while ('\0' != *++s3) {
2039: if (*s2 != *s3) { /* mismatch */
2040: s3 = strchr(s3, *s1);
2041: break;
2042: }
2043: if (*s3 == *s1) { /* found the final delimiter */
2044: match = 1;
2045: break;
2046: }
2047: s2++;
2048: }
2049:
2050: out:
2051: if (NULL == s3)
2052: s3 = strchr(s2, '\0');
1.242 schwarze 2053: else if (*s3 != '\0')
1.198 schwarze 2054: s3++;
2055: *pos = s3 - v;
1.277 schwarze 2056: return match;
1.198 schwarze 2057: }
2058:
1.204 schwarze 2059: /*
2060: * Evaluate an optionally negated single character, numerical,
2061: * or string condition.
2062: */
1.198 schwarze 2063: static int
1.271 schwarze 2064: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.88 kristaps 2065: {
1.271 schwarze 2066: char *cp, *name;
2067: size_t sz;
1.310 ! schwarze 2068: int number, savepos, istrue, wanttrue;
1.88 kristaps 2069:
1.198 schwarze 2070: if ('!' == v[*pos]) {
2071: wanttrue = 0;
2072: (*pos)++;
2073: } else
2074: wanttrue = 1;
2075:
1.88 kristaps 2076: switch (v[*pos]) {
1.240 schwarze 2077: case '\0':
1.277 schwarze 2078: return 0;
1.207 schwarze 2079: case 'n':
2080: case 'o':
1.88 kristaps 2081: (*pos)++;
1.277 schwarze 2082: return wanttrue;
1.207 schwarze 2083: case 'c':
2084: case 'e':
2085: case 't':
1.239 schwarze 2086: case 'v':
1.88 kristaps 2087: (*pos)++;
1.277 schwarze 2088: return !wanttrue;
1.310 ! schwarze 2089: case 'd':
1.271 schwarze 2090: case 'r':
1.310 ! schwarze 2091: cp = v + *pos + 1;
! 2092: while (*cp == ' ')
! 2093: cp++;
! 2094: name = cp;
! 2095: sz = roff_getname(r, &cp, ln, cp - v);
! 2096: istrue = sz && (v[*pos] == 'r' ? roff_hasregn(r, name, sz) :
! 2097: (roff_getstrn(r, name, sz) != NULL ||
! 2098: roff_getrenn(r, name, sz) != NULL));
1.271 schwarze 2099: *pos = cp - v;
1.310 ! schwarze 2100: return istrue == wanttrue;
1.88 kristaps 2101: default:
2102: break;
2103: }
2104:
1.241 schwarze 2105: savepos = *pos;
1.261 schwarze 2106: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.277 schwarze 2107: return (number > 0) == wanttrue;
1.241 schwarze 2108: else if (*pos == savepos)
1.277 schwarze 2109: return roff_evalstrcond(v, pos) == wanttrue;
1.204 schwarze 2110: else
1.277 schwarze 2111: return 0;
1.88 kristaps 2112: }
2113:
1.74 kristaps 2114: static enum rofferr
1.103 kristaps 2115: roff_line_ignore(ROFF_ARGS)
1.89 kristaps 2116: {
1.123 schwarze 2117:
1.277 schwarze 2118: return ROFF_IGN;
1.89 kristaps 2119: }
2120:
1.104 kristaps 2121: static enum rofferr
1.251 schwarze 2122: roff_insec(ROFF_ARGS)
2123: {
2124:
2125: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
1.295 schwarze 2126: ln, ppos, roff_name[tok]);
1.277 schwarze 2127: return ROFF_IGN;
1.251 schwarze 2128: }
2129:
2130: static enum rofferr
2131: roff_unsupp(ROFF_ARGS)
2132: {
2133:
2134: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
1.295 schwarze 2135: ln, ppos, roff_name[tok]);
1.277 schwarze 2136: return ROFF_IGN;
1.251 schwarze 2137: }
2138:
2139: static enum rofferr
1.82 kristaps 2140: roff_cond(ROFF_ARGS)
1.74 kristaps 2141: {
1.173 schwarze 2142:
2143: roffnode_push(r, tok, NULL, ln, ppos);
1.74 kristaps 2144:
1.207 schwarze 2145: /*
1.134 kristaps 2146: * An `.el' has no conditional body: it will consume the value
2147: * of the current rstack entry set in prior `ie' calls or
1.207 schwarze 2148: * defaults to DENY.
1.134 kristaps 2149: *
2150: * If we're not an `el', however, then evaluate the conditional.
2151: */
1.133 kristaps 2152:
1.238 schwarze 2153: r->last->rule = tok == ROFF_el ?
1.207 schwarze 2154: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.238 schwarze 2155: roff_evalcond(r, ln, buf->buf, &pos);
1.77 kristaps 2156:
1.134 kristaps 2157: /*
2158: * An if-else will put the NEGATION of the current evaluated
2159: * conditional into the stack of rules.
2160: */
2161:
1.238 schwarze 2162: if (tok == ROFF_ie) {
1.223 schwarze 2163: if (r->rstackpos + 1 == r->rstacksz) {
2164: r->rstacksz += 16;
2165: r->rstack = mandoc_reallocarray(r->rstack,
2166: r->rstacksz, sizeof(int));
1.134 kristaps 2167: }
1.198 schwarze 2168: r->rstack[++r->rstackpos] = !r->last->rule;
1.82 kristaps 2169: }
1.88 kristaps 2170:
2171: /* If the parent has false as its rule, then so do we. */
2172:
1.198 schwarze 2173: if (r->last->parent && !r->last->parent->rule)
2174: r->last->rule = 0;
1.88 kristaps 2175:
2176: /*
1.173 schwarze 2177: * Determine scope.
2178: * If there is nothing on the line after the conditional,
2179: * not even whitespace, use next-line scope.
1.88 kristaps 2180: */
1.74 kristaps 2181:
1.238 schwarze 2182: if (buf->buf[pos] == '\0') {
1.173 schwarze 2183: r->last->endspan = 2;
2184: goto out;
2185: }
2186:
1.238 schwarze 2187: while (buf->buf[pos] == ' ')
1.173 schwarze 2188: pos++;
2189:
2190: /* An opening brace requests multiline scope. */
1.75 kristaps 2191:
1.238 schwarze 2192: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.75 kristaps 2193: r->last->endspan = -1;
2194: pos += 2;
1.272 schwarze 2195: while (buf->buf[pos] == ' ')
2196: pos++;
1.173 schwarze 2197: goto out;
1.207 schwarze 2198: }
1.74 kristaps 2199:
1.77 kristaps 2200: /*
1.173 schwarze 2201: * Anything else following the conditional causes
2202: * single-line scope. Warn if the scope contains
2203: * nothing but trailing whitespace.
1.77 kristaps 2204: */
2205:
1.238 schwarze 2206: if (buf->buf[pos] == '\0')
1.216 schwarze 2207: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
1.295 schwarze 2208: ln, ppos, roff_name[tok]);
1.77 kristaps 2209:
1.173 schwarze 2210: r->last->endspan = 1;
1.74 kristaps 2211:
1.173 schwarze 2212: out:
1.75 kristaps 2213: *offs = pos;
1.277 schwarze 2214: return ROFF_RERUN;
1.83 schwarze 2215: }
2216:
2217: static enum rofferr
1.92 schwarze 2218: roff_ds(ROFF_ARGS)
2219: {
1.212 schwarze 2220: char *string;
2221: const char *name;
2222: size_t namesz;
1.96 kristaps 2223:
1.251 schwarze 2224: /* Ignore groff compatibility mode for now. */
2225:
2226: if (tok == ROFF_ds1)
2227: tok = ROFF_ds;
2228: else if (tok == ROFF_as1)
2229: tok = ROFF_as;
2230:
1.96 kristaps 2231: /*
1.212 schwarze 2232: * The first word is the name of the string.
2233: * If it is empty or terminated by an escape sequence,
2234: * abort the `ds' request without defining anything.
1.96 kristaps 2235: */
1.92 schwarze 2236:
1.238 schwarze 2237: name = string = buf->buf + pos;
2238: if (*name == '\0')
1.277 schwarze 2239: return ROFF_IGN;
1.92 schwarze 2240:
1.212 schwarze 2241: namesz = roff_getname(r, &string, ln, pos);
1.238 schwarze 2242: if (name[namesz] == '\\')
1.277 schwarze 2243: return ROFF_IGN;
1.212 schwarze 2244:
2245: /* Read past the initial double-quote, if any. */
1.238 schwarze 2246: if (*string == '"')
1.92 schwarze 2247: string++;
2248:
1.96 kristaps 2249: /* The rest is the value. */
1.212 schwarze 2250: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2251: ROFF_as == tok);
1.277 schwarze 2252: return ROFF_IGN;
1.92 schwarze 2253: }
2254:
1.204 schwarze 2255: /*
2256: * Parse a single operator, one or two characters long.
2257: * If the operator is recognized, return success and advance the
2258: * parse point, else return failure and let the parse point unchanged.
2259: */
2260: static int
2261: roff_getop(const char *v, int *pos, char *res)
2262: {
2263:
2264: *res = v[*pos];
2265:
2266: switch (*res) {
1.207 schwarze 2267: case '+':
2268: case '-':
2269: case '*':
2270: case '/':
2271: case '%':
2272: case '&':
2273: case ':':
1.204 schwarze 2274: break;
2275: case '<':
2276: switch (v[*pos + 1]) {
1.207 schwarze 2277: case '=':
1.204 schwarze 2278: *res = 'l';
2279: (*pos)++;
2280: break;
1.207 schwarze 2281: case '>':
1.204 schwarze 2282: *res = '!';
2283: (*pos)++;
2284: break;
1.207 schwarze 2285: case '?':
1.204 schwarze 2286: *res = 'i';
2287: (*pos)++;
2288: break;
2289: default:
2290: break;
2291: }
2292: break;
2293: case '>':
2294: switch (v[*pos + 1]) {
1.207 schwarze 2295: case '=':
1.204 schwarze 2296: *res = 'g';
2297: (*pos)++;
2298: break;
1.207 schwarze 2299: case '?':
1.204 schwarze 2300: *res = 'a';
2301: (*pos)++;
2302: break;
2303: default:
2304: break;
2305: }
2306: break;
2307: case '=':
2308: if ('=' == v[*pos + 1])
2309: (*pos)++;
2310: break;
2311: default:
1.277 schwarze 2312: return 0;
1.204 schwarze 2313: }
2314: (*pos)++;
2315:
1.277 schwarze 2316: return *res;
1.204 schwarze 2317: }
2318:
2319: /*
2320: * Evaluate either a parenthesized numeric expression
2321: * or a single signed integer number.
2322: */
2323: static int
1.235 schwarze 2324: roff_evalpar(struct roff *r, int ln,
1.261 schwarze 2325: const char *v, int *pos, int *res, int flags)
1.204 schwarze 2326: {
2327:
2328: if ('(' != v[*pos])
1.277 schwarze 2329: return roff_getnum(v, pos, res, flags);
1.204 schwarze 2330:
2331: (*pos)++;
1.261 schwarze 2332: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.277 schwarze 2333: return 0;
1.204 schwarze 2334:
1.206 schwarze 2335: /*
2336: * Omission of the closing parenthesis
2337: * is an error in validation mode,
2338: * but ignored in evaluation mode.
2339: */
2340:
1.204 schwarze 2341: if (')' == v[*pos])
2342: (*pos)++;
1.206 schwarze 2343: else if (NULL == res)
1.277 schwarze 2344: return 0;
1.204 schwarze 2345:
1.277 schwarze 2346: return 1;
1.204 schwarze 2347: }
2348:
2349: /*
2350: * Evaluate a complete numeric expression.
2351: * Proceed left to right, there is no concept of precedence.
2352: */
2353: static int
1.235 schwarze 2354: roff_evalnum(struct roff *r, int ln, const char *v,
1.261 schwarze 2355: int *pos, int *res, int flags)
1.204 schwarze 2356: {
2357: int mypos, operand2;
2358: char operator;
2359:
2360: if (NULL == pos) {
2361: mypos = 0;
2362: pos = &mypos;
2363: }
2364:
1.261 schwarze 2365: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2366: while (isspace((unsigned char)v[*pos]))
2367: (*pos)++;
2368:
1.261 schwarze 2369: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.277 schwarze 2370: return 0;
1.204 schwarze 2371:
2372: while (1) {
1.261 schwarze 2373: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2374: while (isspace((unsigned char)v[*pos]))
2375: (*pos)++;
2376:
2377: if ( ! roff_getop(v, pos, &operator))
2378: break;
2379:
1.261 schwarze 2380: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2381: while (isspace((unsigned char)v[*pos]))
2382: (*pos)++;
2383:
1.261 schwarze 2384: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.277 schwarze 2385: return 0;
1.204 schwarze 2386:
1.261 schwarze 2387: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2388: while (isspace((unsigned char)v[*pos]))
2389: (*pos)++;
1.206 schwarze 2390:
2391: if (NULL == res)
2392: continue;
1.204 schwarze 2393:
2394: switch (operator) {
1.207 schwarze 2395: case '+':
1.204 schwarze 2396: *res += operand2;
2397: break;
1.207 schwarze 2398: case '-':
1.204 schwarze 2399: *res -= operand2;
2400: break;
1.207 schwarze 2401: case '*':
1.204 schwarze 2402: *res *= operand2;
2403: break;
1.207 schwarze 2404: case '/':
1.244 schwarze 2405: if (operand2 == 0) {
1.235 schwarze 2406: mandoc_msg(MANDOCERR_DIVZERO,
1.234 kristaps 2407: r->parse, ln, *pos, v);
2408: *res = 0;
2409: break;
2410: }
1.204 schwarze 2411: *res /= operand2;
2412: break;
1.207 schwarze 2413: case '%':
1.244 schwarze 2414: if (operand2 == 0) {
2415: mandoc_msg(MANDOCERR_DIVZERO,
2416: r->parse, ln, *pos, v);
2417: *res = 0;
2418: break;
2419: }
1.204 schwarze 2420: *res %= operand2;
2421: break;
1.207 schwarze 2422: case '<':
1.204 schwarze 2423: *res = *res < operand2;
2424: break;
1.207 schwarze 2425: case '>':
1.204 schwarze 2426: *res = *res > operand2;
2427: break;
1.207 schwarze 2428: case 'l':
1.204 schwarze 2429: *res = *res <= operand2;
2430: break;
1.207 schwarze 2431: case 'g':
1.204 schwarze 2432: *res = *res >= operand2;
2433: break;
1.207 schwarze 2434: case '=':
1.204 schwarze 2435: *res = *res == operand2;
2436: break;
1.207 schwarze 2437: case '!':
1.204 schwarze 2438: *res = *res != operand2;
2439: break;
1.207 schwarze 2440: case '&':
1.204 schwarze 2441: *res = *res && operand2;
2442: break;
1.207 schwarze 2443: case ':':
1.204 schwarze 2444: *res = *res || operand2;
2445: break;
1.207 schwarze 2446: case 'i':
1.204 schwarze 2447: if (operand2 < *res)
2448: *res = operand2;
2449: break;
1.207 schwarze 2450: case 'a':
1.204 schwarze 2451: if (operand2 > *res)
2452: *res = operand2;
2453: break;
2454: default:
2455: abort();
2456: }
2457: }
1.277 schwarze 2458: return 1;
1.204 schwarze 2459: }
2460:
1.266 schwarze 2461: /* --- register management ------------------------------------------------ */
2462:
1.180 schwarze 2463: void
1.187 schwarze 2464: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.147 kristaps 2465: {
1.180 schwarze 2466: struct roffreg *reg;
2467:
2468: /* Search for an existing register with the same name. */
2469: reg = r->regtab;
2470:
2471: while (reg && strcmp(name, reg->key.p))
2472: reg = reg->next;
1.147 kristaps 2473:
1.180 schwarze 2474: if (NULL == reg) {
2475: /* Create a new register. */
2476: reg = mandoc_malloc(sizeof(struct roffreg));
2477: reg->key.p = mandoc_strdup(name);
2478: reg->key.sz = strlen(name);
1.187 schwarze 2479: reg->val = 0;
1.180 schwarze 2480: reg->next = r->regtab;
2481: r->regtab = reg;
2482: }
2483:
1.187 schwarze 2484: if ('+' == sign)
2485: reg->val += val;
2486: else if ('-' == sign)
2487: reg->val -= val;
2488: else
2489: reg->val = val;
1.147 kristaps 2490: }
2491:
1.192 schwarze 2492: /*
2493: * Handle some predefined read-only number registers.
2494: * For now, return -1 if the requested register is not predefined;
2495: * in case a predefined read-only register having the value -1
2496: * were to turn up, another special value would have to be chosen.
2497: */
2498: static int
1.273 schwarze 2499: roff_getregro(const struct roff *r, const char *name)
1.192 schwarze 2500: {
2501:
2502: switch (*name) {
1.273 schwarze 2503: case '$': /* Number of arguments of the last macro evaluated. */
1.277 schwarze 2504: return r->argc;
1.207 schwarze 2505: case 'A': /* ASCII approximation mode is always off. */
1.277 schwarze 2506: return 0;
1.207 schwarze 2507: case 'g': /* Groff compatibility mode is always on. */
1.277 schwarze 2508: return 1;
1.207 schwarze 2509: case 'H': /* Fixed horizontal resolution. */
1.277 schwarze 2510: return 24;
1.207 schwarze 2511: case 'j': /* Always adjust left margin only. */
1.277 schwarze 2512: return 0;
1.207 schwarze 2513: case 'T': /* Some output device is always defined. */
1.277 schwarze 2514: return 1;
1.207 schwarze 2515: case 'V': /* Fixed vertical resolution. */
1.277 schwarze 2516: return 40;
1.192 schwarze 2517: default:
1.277 schwarze 2518: return -1;
1.192 schwarze 2519: }
2520: }
2521:
1.181 schwarze 2522: int
1.180 schwarze 2523: roff_getreg(const struct roff *r, const char *name)
1.147 kristaps 2524: {
1.180 schwarze 2525: struct roffreg *reg;
1.192 schwarze 2526: int val;
2527:
2528: if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) {
1.273 schwarze 2529: val = roff_getregro(r, name + 1);
1.192 schwarze 2530: if (-1 != val)
1.277 schwarze 2531: return val;
1.192 schwarze 2532: }
1.180 schwarze 2533:
2534: for (reg = r->regtab; reg; reg = reg->next)
2535: if (0 == strcmp(name, reg->key.p))
1.277 schwarze 2536: return reg->val;
1.181 schwarze 2537:
1.277 schwarze 2538: return 0;
1.181 schwarze 2539: }
2540:
2541: static int
2542: roff_getregn(const struct roff *r, const char *name, size_t len)
2543: {
2544: struct roffreg *reg;
1.192 schwarze 2545: int val;
2546:
2547: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2548: val = roff_getregro(r, name + 1);
1.192 schwarze 2549: if (-1 != val)
1.277 schwarze 2550: return val;
1.192 schwarze 2551: }
1.181 schwarze 2552:
2553: for (reg = r->regtab; reg; reg = reg->next)
2554: if (len == reg->key.sz &&
2555: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2556: return reg->val;
1.271 schwarze 2557:
1.277 schwarze 2558: return 0;
1.271 schwarze 2559: }
2560:
2561: static int
2562: roff_hasregn(const struct roff *r, const char *name, size_t len)
2563: {
2564: struct roffreg *reg;
2565: int val;
2566:
2567: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2568: val = roff_getregro(r, name + 1);
1.271 schwarze 2569: if (-1 != val)
1.277 schwarze 2570: return 1;
1.271 schwarze 2571: }
2572:
2573: for (reg = r->regtab; reg; reg = reg->next)
2574: if (len == reg->key.sz &&
2575: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2576: return 1;
1.147 kristaps 2577:
1.277 schwarze 2578: return 0;
1.147 kristaps 2579: }
2580:
1.180 schwarze 2581: static void
2582: roff_freereg(struct roffreg *reg)
1.147 kristaps 2583: {
1.180 schwarze 2584: struct roffreg *old_reg;
1.147 kristaps 2585:
1.180 schwarze 2586: while (NULL != reg) {
2587: free(reg->key.p);
2588: old_reg = reg;
2589: reg = reg->next;
2590: free(old_reg);
2591: }
1.147 kristaps 2592: }
1.92 schwarze 2593:
2594: static enum rofferr
1.89 kristaps 2595: roff_nr(ROFF_ARGS)
1.83 schwarze 2596: {
1.212 schwarze 2597: char *key, *val;
2598: size_t keysz;
1.138 kristaps 2599: int iv;
1.187 schwarze 2600: char sign;
1.89 kristaps 2601:
1.238 schwarze 2602: key = val = buf->buf + pos;
2603: if (*key == '\0')
1.277 schwarze 2604: return ROFF_IGN;
1.212 schwarze 2605:
2606: keysz = roff_getname(r, &val, ln, pos);
1.238 schwarze 2607: if (key[keysz] == '\\')
1.277 schwarze 2608: return ROFF_IGN;
1.212 schwarze 2609: key[keysz] = '\0';
1.89 kristaps 2610:
1.187 schwarze 2611: sign = *val;
1.238 schwarze 2612: if (sign == '+' || sign == '-')
1.187 schwarze 2613: val++;
2614:
1.261 schwarze 2615: if (roff_evalnum(r, ln, val, NULL, &iv, ROFFNUM_SCALE))
1.204 schwarze 2616: roff_setreg(r, key, iv, sign);
1.109 kristaps 2617:
1.277 schwarze 2618: return ROFF_IGN;
1.203 schwarze 2619: }
2620:
2621: static enum rofferr
2622: roff_rr(ROFF_ARGS)
2623: {
2624: struct roffreg *reg, **prev;
1.212 schwarze 2625: char *name, *cp;
2626: size_t namesz;
1.203 schwarze 2627:
1.238 schwarze 2628: name = cp = buf->buf + pos;
2629: if (*name == '\0')
1.277 schwarze 2630: return ROFF_IGN;
1.212 schwarze 2631: namesz = roff_getname(r, &cp, ln, pos);
2632: name[namesz] = '\0';
1.203 schwarze 2633:
2634: prev = &r->regtab;
2635: while (1) {
2636: reg = *prev;
1.238 schwarze 2637: if (reg == NULL || !strcmp(name, reg->key.p))
1.203 schwarze 2638: break;
2639: prev = ®->next;
2640: }
1.238 schwarze 2641: if (reg != NULL) {
1.203 schwarze 2642: *prev = reg->next;
2643: free(reg->key.p);
2644: free(reg);
2645: }
1.277 schwarze 2646: return ROFF_IGN;
1.122 schwarze 2647: }
2648:
1.266 schwarze 2649: /* --- handler functions for roff requests -------------------------------- */
2650:
1.122 schwarze 2651: static enum rofferr
2652: roff_rm(ROFF_ARGS)
2653: {
2654: const char *name;
2655: char *cp;
1.212 schwarze 2656: size_t namesz;
1.122 schwarze 2657:
1.238 schwarze 2658: cp = buf->buf + pos;
2659: while (*cp != '\0') {
1.212 schwarze 2660: name = cp;
1.238 schwarze 2661: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.212 schwarze 2662: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.238 schwarze 2663: if (name[namesz] == '\\')
1.212 schwarze 2664: break;
1.122 schwarze 2665: }
1.277 schwarze 2666: return ROFF_IGN;
1.178 schwarze 2667: }
2668:
2669: static enum rofferr
2670: roff_it(ROFF_ARGS)
2671: {
2672: int iv;
2673:
2674: /* Parse the number of lines. */
1.261 schwarze 2675:
2676: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.222 schwarze 2677: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.238 schwarze 2678: ln, ppos, buf->buf + 1);
1.277 schwarze 2679: return ROFF_IGN;
1.178 schwarze 2680: }
2681:
1.262 schwarze 2682: while (isspace((unsigned char)buf->buf[pos]))
2683: pos++;
2684:
2685: /*
2686: * Arm the input line trap.
2687: * Special-casing "an-trap" is an ugly workaround to cope
2688: * with DocBook stupidly fiddling with man(7) internals.
2689: */
1.261 schwarze 2690:
1.178 schwarze 2691: roffit_lines = iv;
1.262 schwarze 2692: roffit_macro = mandoc_strdup(iv != 1 ||
2693: strcmp(buf->buf + pos, "an-trap") ?
2694: buf->buf + pos : "br");
1.277 schwarze 2695: return ROFF_IGN;
1.175 schwarze 2696: }
2697:
2698: static enum rofferr
2699: roff_Dd(ROFF_ARGS)
2700: {
2701: const char *const *cp;
2702:
1.227 schwarze 2703: if ((r->options & (MPARSE_MDOC | MPARSE_QUICK)) == 0)
1.175 schwarze 2704: for (cp = __mdoc_reserved; *cp; cp++)
2705: roff_setstr(r, *cp, NULL, 0);
2706:
1.227 schwarze 2707: if (r->format == 0)
2708: r->format = MPARSE_MDOC;
2709:
1.277 schwarze 2710: return ROFF_CONT;
1.175 schwarze 2711: }
2712:
2713: static enum rofferr
2714: roff_TH(ROFF_ARGS)
2715: {
2716: const char *const *cp;
2717:
1.227 schwarze 2718: if ((r->options & MPARSE_QUICK) == 0)
1.175 schwarze 2719: for (cp = __man_reserved; *cp; cp++)
2720: roff_setstr(r, *cp, NULL, 0);
2721:
1.227 schwarze 2722: if (r->format == 0)
2723: r->format = MPARSE_MAN;
2724:
1.277 schwarze 2725: return ROFF_CONT;
1.109 kristaps 2726: }
2727:
2728: static enum rofferr
2729: roff_TE(ROFF_ARGS)
2730: {
2731:
2732: if (NULL == r->tbl)
1.221 schwarze 2733: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2734: ln, ppos, "TE");
1.258 schwarze 2735: else if ( ! tbl_end(&r->tbl)) {
2736: free(buf->buf);
2737: buf->buf = mandoc_strdup(".sp");
2738: buf->sz = 4;
1.277 schwarze 2739: return ROFF_REPARSE;
1.258 schwarze 2740: }
1.277 schwarze 2741: return ROFF_IGN;
1.112 kristaps 2742: }
2743:
2744: static enum rofferr
2745: roff_T_(ROFF_ARGS)
2746: {
2747:
2748: if (NULL == r->tbl)
1.221 schwarze 2749: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2750: ln, ppos, "T&");
1.112 kristaps 2751: else
1.296 schwarze 2752: tbl_restart(ln, ppos, r->tbl);
1.112 kristaps 2753:
1.277 schwarze 2754: return ROFF_IGN;
1.109 kristaps 2755: }
2756:
1.230 schwarze 2757: /*
2758: * Handle in-line equation delimiters.
2759: */
2760: static enum rofferr
1.238 schwarze 2761: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.151 kristaps 2762: {
1.233 schwarze 2763: char *cp1, *cp2;
2764: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.151 kristaps 2765:
1.230 schwarze 2766: /*
2767: * Outside equations, look for an opening delimiter.
2768: * If we are inside an equation, we already know it is
2769: * in-line, or this function wouldn't have been called;
2770: * so look for a closing delimiter.
2771: */
2772:
1.238 schwarze 2773: cp1 = buf->buf + pos;
1.230 schwarze 2774: cp2 = strchr(cp1, r->eqn == NULL ?
2775: r->last_eqn->odelim : r->last_eqn->cdelim);
2776: if (cp2 == NULL)
1.277 schwarze 2777: return ROFF_CONT;
1.230 schwarze 2778:
1.233 schwarze 2779: *cp2++ = '\0';
2780: bef_pr = bef_nl = aft_nl = aft_pr = "";
2781:
2782: /* Handle preceding text, protecting whitespace. */
2783:
1.238 schwarze 2784: if (*buf->buf != '\0') {
1.233 schwarze 2785: if (r->eqn == NULL)
2786: bef_pr = "\\&";
2787: bef_nl = "\n";
2788: }
2789:
2790: /*
2791: * Prepare replacing the delimiter with an equation macro
2792: * and drop leading white space from the equation.
2793: */
1.230 schwarze 2794:
1.233 schwarze 2795: if (r->eqn == NULL) {
2796: while (*cp2 == ' ')
2797: cp2++;
2798: mac = ".EQ";
2799: } else
2800: mac = ".EN";
2801:
2802: /* Handle following text, protecting whitespace. */
2803:
2804: if (*cp2 != '\0') {
2805: aft_nl = "\n";
2806: if (r->eqn != NULL)
2807: aft_pr = "\\&";
2808: }
2809:
2810: /* Do the actual replacement. */
2811:
1.238 schwarze 2812: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.233 schwarze 2813: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.238 schwarze 2814: free(buf->buf);
2815: buf->buf = cp1;
1.230 schwarze 2816:
2817: /* Toggle the in-line state of the eqn subsystem. */
2818:
2819: r->eqn_inline = r->eqn == NULL;
1.277 schwarze 2820: return ROFF_REPARSE;
1.151 kristaps 2821: }
2822:
1.235 schwarze 2823: static enum rofferr
2824: roff_EQ(ROFF_ARGS)
1.125 kristaps 2825: {
1.151 kristaps 2826: struct eqn_node *e;
1.125 kristaps 2827:
1.238 schwarze 2828: assert(r->eqn == NULL);
1.235 schwarze 2829: e = eqn_alloc(ppos, ln, r->parse);
1.125 kristaps 2830:
1.230 schwarze 2831: if (r->last_eqn) {
1.125 kristaps 2832: r->last_eqn->next = e;
1.230 schwarze 2833: e->delim = r->last_eqn->delim;
2834: e->odelim = r->last_eqn->odelim;
2835: e->cdelim = r->last_eqn->cdelim;
2836: } else
1.125 kristaps 2837: r->first_eqn = r->last_eqn = e;
2838:
2839: r->eqn = r->last_eqn = e;
1.151 kristaps 2840:
1.238 schwarze 2841: if (buf->buf[pos] != '\0')
1.235 schwarze 2842: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 2843: ".EQ %s", buf->buf + pos);
1.151 kristaps 2844:
1.277 schwarze 2845: return ROFF_IGN;
1.125 kristaps 2846: }
2847:
2848: static enum rofferr
2849: roff_EN(ROFF_ARGS)
2850: {
2851:
1.221 schwarze 2852: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
1.277 schwarze 2853: return ROFF_IGN;
1.125 kristaps 2854: }
2855:
2856: static enum rofferr
1.109 kristaps 2857: roff_TS(ROFF_ARGS)
2858: {
1.176 schwarze 2859: struct tbl_node *tbl;
1.89 kristaps 2860:
1.115 kristaps 2861: if (r->tbl) {
1.221 schwarze 2862: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
2863: ln, ppos, "TS breaks TS");
1.151 kristaps 2864: tbl_end(&r->tbl);
1.115 kristaps 2865: }
1.83 schwarze 2866:
1.176 schwarze 2867: tbl = tbl_alloc(ppos, ln, r->parse);
1.113 kristaps 2868:
2869: if (r->last_tbl)
1.176 schwarze 2870: r->last_tbl->next = tbl;
1.113 kristaps 2871: else
1.176 schwarze 2872: r->first_tbl = r->last_tbl = tbl;
1.113 kristaps 2873:
1.176 schwarze 2874: r->tbl = r->last_tbl = tbl;
1.297 schwarze 2875: return ROFF_IGN;
2876: }
2877:
2878: static enum rofferr
2879: roff_onearg(ROFF_ARGS)
2880: {
2881: struct roff_node *n;
2882: char *cp;
1.305 schwarze 2883: int npos;
1.297 schwarze 2884:
1.302 schwarze 2885: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
2886: (tok == ROFF_sp || tok == ROFF_ti))
2887: man_breakscope(r->man, tok);
2888:
1.309 schwarze 2889: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.305 schwarze 2890: r->man->last = roffce_node;
2891: r->man->next = ROFF_NEXT_SIBLING;
2892: }
2893:
1.297 schwarze 2894: roff_elem_alloc(r->man, ln, ppos, tok);
2895: n = r->man->last;
2896:
2897: cp = buf->buf + pos;
2898: if (*cp != '\0') {
2899: while (*cp != '\0' && *cp != ' ')
2900: cp++;
2901: while (*cp == ' ')
2902: *cp++ = '\0';
2903: if (*cp != '\0')
2904: mandoc_vmsg(MANDOCERR_ARG_EXCESS,
2905: r->parse, ln, cp - buf->buf,
2906: "%s ... %s", roff_name[tok], cp);
2907: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.300 schwarze 2908: }
2909:
1.309 schwarze 2910: if (tok == ROFF_ce || tok == ROFF_rj) {
2911: if (r->man->last->type == ROFFT_ELEM) {
1.305 schwarze 2912: roff_word_alloc(r->man, ln, pos, "1");
2913: r->man->last->flags |= NODE_NOSRC;
2914: }
2915: npos = 0;
2916: if (roff_evalnum(r, ln, r->man->last->string, &npos,
2917: &roffce_lines, 0) == 0) {
2918: mandoc_vmsg(MANDOCERR_CE_NONUM,
2919: r->parse, ln, pos, "ce %s", buf->buf + pos);
2920: roffce_lines = 1;
2921: }
2922: if (roffce_lines < 1) {
2923: r->man->last = r->man->last->parent;
2924: roffce_node = NULL;
2925: roffce_lines = 0;
2926: } else
2927: roffce_node = r->man->last->parent;
2928: } else {
2929: n->flags |= NODE_VALID | NODE_ENDED;
2930: r->man->last = n;
2931: }
2932: n->flags |= NODE_LINE;
1.300 schwarze 2933: r->man->next = ROFF_NEXT_SIBLING;
2934: return ROFF_IGN;
2935: }
2936:
2937: static enum rofferr
2938: roff_manyarg(ROFF_ARGS)
2939: {
2940: struct roff_node *n;
2941: char *sp, *ep;
2942:
2943: roff_elem_alloc(r->man, ln, ppos, tok);
2944: n = r->man->last;
2945:
2946: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
2947: while (*ep != '\0' && *ep != ' ')
2948: ep++;
2949: while (*ep == ' ')
2950: *ep++ = '\0';
2951: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.297 schwarze 2952: }
2953:
2954: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
2955: r->man->last = n;
2956: r->man->next = ROFF_NEXT_SIBLING;
1.277 schwarze 2957: return ROFF_IGN;
1.251 schwarze 2958: }
2959:
2960: static enum rofferr
1.296 schwarze 2961: roff_br(ROFF_ARGS)
1.251 schwarze 2962: {
1.302 schwarze 2963: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
2964: man_breakscope(r->man, ROFF_br);
1.296 schwarze 2965: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
2966: if (buf->buf[pos] != '\0')
2967: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
2968: "%s %s", roff_name[tok], buf->buf + pos);
2969: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
2970: r->man->next = ROFF_NEXT_SIBLING;
2971: return ROFF_IGN;
1.92 schwarze 2972: }
2973:
1.105 kristaps 2974: static enum rofferr
1.174 kristaps 2975: roff_cc(ROFF_ARGS)
2976: {
2977: const char *p;
2978:
1.238 schwarze 2979: p = buf->buf + pos;
1.174 kristaps 2980:
1.238 schwarze 2981: if (*p == '\0' || (r->control = *p++) == '.')
1.303 schwarze 2982: r->control = '\0';
1.174 kristaps 2983:
1.238 schwarze 2984: if (*p != '\0')
1.260 schwarze 2985: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
2986: ln, p - buf->buf, "cc ... %s", p);
1.174 kristaps 2987:
1.277 schwarze 2988: return ROFF_IGN;
1.174 kristaps 2989: }
2990:
2991: static enum rofferr
1.303 schwarze 2992: roff_ec(ROFF_ARGS)
2993: {
2994: const char *p;
2995:
2996: p = buf->buf + pos;
2997: if (*p == '\0')
2998: r->escape = '\\';
2999: else {
3000: r->escape = *p;
3001: if (*++p != '\0')
3002: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3003: ln, p - buf->buf, "ec ... %s", p);
3004: }
3005: return ROFF_IGN;
3006: }
3007:
3008: static enum rofferr
3009: roff_eo(ROFF_ARGS)
3010: {
3011: r->escape = '\0';
3012: if (buf->buf[pos] != '\0')
3013: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse,
3014: ln, pos, "eo %s", buf->buf + pos);
3015: return ROFF_IGN;
3016: }
3017:
3018: static enum rofferr
1.164 kristaps 3019: roff_tr(ROFF_ARGS)
3020: {
3021: const char *p, *first, *second;
3022: size_t fsz, ssz;
3023: enum mandoc_esc esc;
3024:
1.238 schwarze 3025: p = buf->buf + pos;
1.164 kristaps 3026:
1.238 schwarze 3027: if (*p == '\0') {
1.260 schwarze 3028: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.277 schwarze 3029: return ROFF_IGN;
1.164 kristaps 3030: }
3031:
1.238 schwarze 3032: while (*p != '\0') {
1.164 kristaps 3033: fsz = ssz = 1;
3034:
3035: first = p++;
1.238 schwarze 3036: if (*first == '\\') {
1.164 kristaps 3037: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3038: if (esc == ESCAPE_ERROR) {
1.219 schwarze 3039: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 3040: ln, (int)(p - buf->buf), first);
1.277 schwarze 3041: return ROFF_IGN;
1.164 kristaps 3042: }
3043: fsz = (size_t)(p - first);
3044: }
3045:
3046: second = p++;
1.238 schwarze 3047: if (*second == '\\') {
1.164 kristaps 3048: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3049: if (esc == ESCAPE_ERROR) {
1.219 schwarze 3050: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 3051: ln, (int)(p - buf->buf), second);
1.277 schwarze 3052: return ROFF_IGN;
1.164 kristaps 3053: }
3054: ssz = (size_t)(p - second);
1.238 schwarze 3055: } else if (*second == '\0') {
1.260 schwarze 3056: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
3057: ln, first - buf->buf, "tr %s", first);
1.164 kristaps 3058: second = " ";
1.165 kristaps 3059: p--;
1.164 kristaps 3060: }
3061:
1.167 kristaps 3062: if (fsz > 1) {
1.207 schwarze 3063: roff_setstrn(&r->xmbtab, first, fsz,
3064: second, ssz, 0);
1.167 kristaps 3065: continue;
3066: }
3067:
1.238 schwarze 3068: if (r->xtab == NULL)
1.207 schwarze 3069: r->xtab = mandoc_calloc(128,
3070: sizeof(struct roffstr));
1.167 kristaps 3071:
3072: free(r->xtab[(int)*first].p);
3073: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3074: r->xtab[(int)*first].sz = ssz;
1.164 kristaps 3075: }
3076:
1.277 schwarze 3077: return ROFF_IGN;
1.164 kristaps 3078: }
3079:
3080: static enum rofferr
1.306 schwarze 3081: roff_rn(ROFF_ARGS)
3082: {
3083: const char *value;
3084: char *oldn, *newn, *end;
3085: size_t oldsz, newsz;
3086:
3087: oldn = newn = buf->buf + pos;
3088: if (*oldn == '\0')
3089: return ROFF_IGN;
3090:
3091: oldsz = roff_getname(r, &newn, ln, pos);
3092: if (oldn[oldsz] == '\\' || *newn == '\0')
3093: return ROFF_IGN;
3094:
3095: end = newn;
3096: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3097: if (newsz == 0)
3098: return ROFF_IGN;
3099:
3100: /*
3101: * Rename a user-defined macro bearing the old name,
3102: * overriding an existing renamed high-level macro
3103: * bearing the new name, if that exists.
3104: */
3105:
3106: if ((value = roff_getstrn(r, oldn, oldsz)) != NULL) {
3107: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3108: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3109: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3110: return ROFF_IGN;
3111: }
3112:
3113: /*
3114: * Rename a high-level macro bearing the old name,
3115: * either renaming it a second time if it was already
3116: * renamed before, or renaming it for the first time.
3117: * In both cases, override an existing user-defined
3118: * macro bearing the new name, if that exists.
3119: */
3120:
3121: if ((value = roff_getrenn(r, oldn, oldsz)) != NULL) {
3122: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3123: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
3124: } else
3125: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
3126: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3127: return ROFF_IGN;
3128: }
3129:
3130: static enum rofferr
1.105 kristaps 3131: roff_so(ROFF_ARGS)
3132: {
1.249 schwarze 3133: char *name, *cp;
1.105 kristaps 3134:
1.238 schwarze 3135: name = buf->buf + pos;
1.224 schwarze 3136: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.105 kristaps 3137:
3138: /*
3139: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3140: * opening anything that's not in our cwd or anything beneath
3141: * it. Thus, explicitly disallow traversing up the file-system
3142: * or using absolute paths.
3143: */
3144:
1.238 schwarze 3145: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.210 schwarze 3146: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
3147: ".so %s", name);
1.249 schwarze 3148: buf->sz = mandoc_asprintf(&cp,
3149: ".sp\nSee the file %s.\n.sp", name) + 1;
3150: free(buf->buf);
3151: buf->buf = cp;
3152: *offs = 0;
1.277 schwarze 3153: return ROFF_REPARSE;
1.105 kristaps 3154: }
3155:
3156: *offs = pos;
1.277 schwarze 3157: return ROFF_SO;
1.105 kristaps 3158: }
1.92 schwarze 3159:
1.266 schwarze 3160: /* --- user defined strings and macros ------------------------------------ */
3161:
1.106 kristaps 3162: static enum rofferr
3163: roff_userdef(ROFF_ARGS)
1.99 kristaps 3164: {
1.263 schwarze 3165: const char *arg[9], *ap;
1.106 kristaps 3166: char *cp, *n1, *n2;
1.292 schwarze 3167: int expand_count, i, ib, ie;
1.263 schwarze 3168: size_t asz, rsz;
1.106 kristaps 3169:
3170: /*
3171: * Collect pointers to macro argument strings
1.188 schwarze 3172: * and NUL-terminate them.
1.106 kristaps 3173: */
1.263 schwarze 3174:
1.273 schwarze 3175: r->argc = 0;
1.238 schwarze 3176: cp = buf->buf + pos;
1.273 schwarze 3177: for (i = 0; i < 9; i++) {
3178: if (*cp == '\0')
3179: arg[i] = "";
3180: else {
3181: arg[i] = mandoc_getarg(r->parse, &cp, ln, &pos);
3182: r->argc = i + 1;
3183: }
3184: }
1.99 kristaps 3185:
1.106 kristaps 3186: /*
3187: * Expand macro arguments.
1.99 kristaps 3188: */
1.263 schwarze 3189:
3190: buf->sz = strlen(r->current_string) + 1;
1.292 schwarze 3191: n1 = n2 = cp = mandoc_malloc(buf->sz);
1.263 schwarze 3192: memcpy(n1, r->current_string, buf->sz);
1.292 schwarze 3193: expand_count = 0;
1.263 schwarze 3194: while (*cp != '\0') {
3195:
3196: /* Scan ahead for the next argument invocation. */
3197:
3198: if (*cp++ != '\\')
3199: continue;
3200: if (*cp++ != '$')
3201: continue;
1.274 schwarze 3202: if (*cp == '*') { /* \\$* inserts all arguments */
3203: ib = 0;
3204: ie = r->argc - 1;
3205: } else { /* \\$1 .. \\$9 insert one argument */
3206: ib = ie = *cp - '1';
3207: if (ib < 0 || ib > 8)
3208: continue;
3209: }
1.263 schwarze 3210: cp -= 2;
1.292 schwarze 3211:
3212: /*
3213: * Prevent infinite recursion.
3214: */
3215:
3216: if (cp >= n2)
3217: expand_count = 1;
3218: else if (++expand_count > EXPAND_LIMIT) {
3219: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
3220: ln, (int)(cp - n1), NULL);
1.293 schwarze 3221: free(buf->buf);
3222: buf->buf = n1;
1.292 schwarze 3223: return ROFF_IGN;
3224: }
1.263 schwarze 3225:
3226: /*
3227: * Determine the size of the expanded argument,
3228: * taking escaping of quotes into account.
3229: */
3230:
1.274 schwarze 3231: asz = ie > ib ? ie - ib : 0; /* for blanks */
3232: for (i = ib; i <= ie; i++) {
3233: for (ap = arg[i]; *ap != '\0'; ap++) {
3234: asz++;
3235: if (*ap == '"')
3236: asz += 3;
3237: }
1.263 schwarze 3238: }
3239: if (asz != 3) {
3240:
3241: /*
3242: * Determine the size of the rest of the
3243: * unexpanded macro, including the NUL.
3244: */
3245:
3246: rsz = buf->sz - (cp - n1) - 3;
3247:
3248: /*
3249: * When shrinking, move before
3250: * releasing the storage.
3251: */
3252:
3253: if (asz < 3)
3254: memmove(cp + asz, cp + 3, rsz);
3255:
3256: /*
3257: * Resize the storage for the macro
3258: * and readjust the parse pointer.
3259: */
3260:
3261: buf->sz += asz - 3;
3262: n2 = mandoc_realloc(n1, buf->sz);
3263: cp = n2 + (cp - n1);
3264: n1 = n2;
3265:
3266: /*
3267: * When growing, make room
3268: * for the expanded argument.
3269: */
3270:
3271: if (asz > 3)
3272: memmove(cp + asz, cp + 3, rsz);
3273: }
3274:
3275: /* Copy the expanded argument, escaping quotes. */
3276:
3277: n2 = cp;
1.274 schwarze 3278: for (i = ib; i <= ie; i++) {
3279: for (ap = arg[i]; *ap != '\0'; ap++) {
3280: if (*ap == '"') {
3281: memcpy(n2, "\\(dq", 4);
3282: n2 += 4;
3283: } else
3284: *n2++ = *ap;
3285: }
3286: if (i < ie)
3287: *n2++ = ' ';
1.106 kristaps 3288: }
1.99 kristaps 3289: }
3290:
1.106 kristaps 3291: /*
3292: * Replace the macro invocation
3293: * by the expanded macro.
3294: */
1.263 schwarze 3295:
1.238 schwarze 3296: free(buf->buf);
3297: buf->buf = n1;
1.248 schwarze 3298: *offs = 0;
1.106 kristaps 3299:
1.277 schwarze 3300: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
3301: ROFF_REPARSE : ROFF_APPEND;
1.99 kristaps 3302: }
1.121 schwarze 3303:
1.306 schwarze 3304: /*
3305: * Calling a high-level macro that was renamed with .rn.
3306: * r->current_string has already been set up by roff_parse().
3307: */
3308: static enum rofferr
3309: roff_renamed(ROFF_ARGS)
3310: {
3311: char *nbuf;
3312:
3313: buf->sz = mandoc_asprintf(&nbuf, ".%s %s", r->current_string,
3314: buf->buf + pos) + 1;
3315: free(buf->buf);
3316: buf->buf = nbuf;
3317: return ROFF_CONT;
3318: }
3319:
1.212 schwarze 3320: static size_t
1.121 schwarze 3321: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3322: {
3323: char *name, *cp;
1.212 schwarze 3324: size_t namesz;
1.121 schwarze 3325:
3326: name = *cpp;
3327: if ('\0' == *name)
1.277 schwarze 3328: return 0;
1.121 schwarze 3329:
1.212 schwarze 3330: /* Read until end of name and terminate it with NUL. */
3331: for (cp = name; 1; cp++) {
3332: if ('\0' == *cp || ' ' == *cp) {
3333: namesz = cp - name;
3334: break;
3335: }
1.121 schwarze 3336: if ('\\' != *cp)
3337: continue;
1.215 schwarze 3338: namesz = cp - name;
3339: if ('{' == cp[1] || '}' == cp[1])
3340: break;
1.121 schwarze 3341: cp++;
3342: if ('\\' == *cp)
3343: continue;
1.224 schwarze 3344: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3345: "%.*s", (int)(cp - name + 1), name);
1.212 schwarze 3346: mandoc_escape((const char **)&cp, NULL, NULL);
3347: break;
1.121 schwarze 3348: }
3349:
3350: /* Read past spaces. */
3351: while (' ' == *cp)
3352: cp++;
3353:
3354: *cpp = cp;
1.277 schwarze 3355: return namesz;
1.121 schwarze 3356: }
3357:
1.106 kristaps 3358: /*
3359: * Store *string into the user-defined string called *name.
3360: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.193 schwarze 3361: * append == 0: replace mode
3362: * append == 1: single-line append mode
3363: * append == 2: multiline append mode, append '\n' after each call
1.106 kristaps 3364: */
1.94 kristaps 3365: static void
1.106 kristaps 3366: roff_setstr(struct roff *r, const char *name, const char *string,
1.193 schwarze 3367: int append)
1.92 schwarze 3368: {
1.164 kristaps 3369:
3370: roff_setstrn(&r->strtab, name, strlen(name), string,
1.207 schwarze 3371: string ? strlen(string) : 0, append);
1.164 kristaps 3372: }
3373:
3374: static void
1.166 kristaps 3375: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.193 schwarze 3376: const char *string, size_t stringsz, int append)
1.164 kristaps 3377: {
1.166 kristaps 3378: struct roffkv *n;
1.164 kristaps 3379: char *c;
3380: int i;
3381: size_t oldch, newch;
1.92 schwarze 3382:
1.106 kristaps 3383: /* Search for an existing string with the same name. */
1.164 kristaps 3384: n = *r;
3385:
1.211 schwarze 3386: while (n && (namesz != n->key.sz ||
3387: strncmp(n->key.p, name, namesz)))
1.92 schwarze 3388: n = n->next;
1.94 kristaps 3389:
3390: if (NULL == n) {
1.106 kristaps 3391: /* Create a new string table entry. */
1.166 kristaps 3392: n = mandoc_malloc(sizeof(struct roffkv));
3393: n->key.p = mandoc_strndup(name, namesz);
3394: n->key.sz = namesz;
3395: n->val.p = NULL;
3396: n->val.sz = 0;
1.164 kristaps 3397: n->next = *r;
3398: *r = n;
1.193 schwarze 3399: } else if (0 == append) {
1.166 kristaps 3400: free(n->val.p);
3401: n->val.p = NULL;
3402: n->val.sz = 0;
1.106 kristaps 3403: }
3404:
3405: if (NULL == string)
3406: return;
3407:
3408: /*
3409: * One additional byte for the '\n' in multiline mode,
3410: * and one for the terminating '\0'.
3411: */
1.193 schwarze 3412: newch = stringsz + (1 < append ? 2u : 1u);
1.164 kristaps 3413:
1.166 kristaps 3414: if (NULL == n->val.p) {
3415: n->val.p = mandoc_malloc(newch);
3416: *n->val.p = '\0';
1.106 kristaps 3417: oldch = 0;
3418: } else {
1.166 kristaps 3419: oldch = n->val.sz;
3420: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.106 kristaps 3421: }
3422:
3423: /* Skip existing content in the destination buffer. */
1.166 kristaps 3424: c = n->val.p + (int)oldch;
1.106 kristaps 3425:
3426: /* Append new content to the destination buffer. */
1.164 kristaps 3427: i = 0;
3428: while (i < (int)stringsz) {
1.106 kristaps 3429: /*
3430: * Rudimentary roff copy mode:
3431: * Handle escaped backslashes.
3432: */
1.164 kristaps 3433: if ('\\' == string[i] && '\\' == string[i + 1])
3434: i++;
3435: *c++ = string[i++];
1.106 kristaps 3436: }
1.94 kristaps 3437:
1.106 kristaps 3438: /* Append terminating bytes. */
1.193 schwarze 3439: if (1 < append)
1.106 kristaps 3440: *c++ = '\n';
1.163 kristaps 3441:
1.106 kristaps 3442: *c = '\0';
1.166 kristaps 3443: n->val.sz = (int)(c - n->val.p);
1.92 schwarze 3444: }
3445:
1.94 kristaps 3446: static const char *
3447: roff_getstrn(const struct roff *r, const char *name, size_t len)
1.92 schwarze 3448: {
1.166 kristaps 3449: const struct roffkv *n;
1.191 schwarze 3450: int i;
1.92 schwarze 3451:
1.164 kristaps 3452: for (n = r->strtab; n; n = n->next)
1.207 schwarze 3453: if (0 == strncmp(name, n->key.p, len) &&
3454: '\0' == n->key.p[(int)len])
1.277 schwarze 3455: return n->val.p;
1.191 schwarze 3456:
3457: for (i = 0; i < PREDEFS_MAX; i++)
3458: if (0 == strncmp(name, predefs[i].name, len) &&
3459: '\0' == predefs[i].name[(int)len])
1.277 schwarze 3460: return predefs[i].str;
1.306 schwarze 3461:
3462: return NULL;
3463: }
3464:
3465: /*
3466: * Check whether *name is the renamed name of a high-level macro.
3467: * Return the standard name, or NULL if it is not.
3468: */
3469: static const char *
3470: roff_getrenn(const struct roff *r, const char *name, size_t len)
3471: {
3472: const struct roffkv *n;
3473:
3474: for (n = r->rentab; n; n = n->next)
3475: if (0 == strncmp(name, n->key.p, len) &&
3476: '\0' == n->key.p[(int)len])
3477: return n->val.p;
1.94 kristaps 3478:
1.277 schwarze 3479: return NULL;
1.92 schwarze 3480: }
3481:
1.94 kristaps 3482: static void
1.167 kristaps 3483: roff_freestr(struct roffkv *r)
1.92 schwarze 3484: {
1.166 kristaps 3485: struct roffkv *n, *nn;
1.92 schwarze 3486:
1.167 kristaps 3487: for (n = r; n; n = nn) {
1.166 kristaps 3488: free(n->key.p);
3489: free(n->val.p);
1.92 schwarze 3490: nn = n->next;
3491: free(n);
3492: }
1.114 kristaps 3493: }
1.266 schwarze 3494:
3495: /* --- accessors and utility functions ------------------------------------ */
1.114 kristaps 3496:
3497: const struct tbl_span *
3498: roff_span(const struct roff *r)
3499: {
1.207 schwarze 3500:
1.277 schwarze 3501: return r->tbl ? tbl_span(r->tbl) : NULL;
1.125 kristaps 3502: }
3503:
3504: const struct eqn *
3505: roff_eqn(const struct roff *r)
3506: {
1.207 schwarze 3507:
1.277 schwarze 3508: return r->last_eqn ? &r->last_eqn->eqn : NULL;
1.164 kristaps 3509: }
3510:
3511: /*
3512: * Duplicate an input string, making the appropriate character
3513: * conversations (as stipulated by `tr') along the way.
3514: * Returns a heap-allocated string with all the replacements made.
3515: */
3516: char *
3517: roff_strdup(const struct roff *r, const char *p)
3518: {
1.166 kristaps 3519: const struct roffkv *cp;
1.164 kristaps 3520: char *res;
3521: const char *pp;
3522: size_t ssz, sz;
3523: enum mandoc_esc esc;
3524:
1.167 kristaps 3525: if (NULL == r->xmbtab && NULL == r->xtab)
1.277 schwarze 3526: return mandoc_strdup(p);
1.164 kristaps 3527: else if ('\0' == *p)
1.277 schwarze 3528: return mandoc_strdup("");
1.164 kristaps 3529:
3530: /*
3531: * Step through each character looking for term matches
3532: * (remember that a `tr' can be invoked with an escape, which is
3533: * a glyph but the escape is multi-character).
3534: * We only do this if the character hash has been initialised
3535: * and the string is >0 length.
3536: */
3537:
3538: res = NULL;
3539: ssz = 0;
3540:
3541: while ('\0' != *p) {
1.289 schwarze 3542: assert((unsigned int)*p < 128);
3543: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.167 kristaps 3544: sz = r->xtab[(int)*p].sz;
3545: res = mandoc_realloc(res, ssz + sz + 1);
3546: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3547: ssz += sz;
3548: p++;
3549: continue;
3550: } else if ('\\' != *p) {
3551: res = mandoc_realloc(res, ssz + 2);
3552: res[ssz++] = *p++;
3553: continue;
3554: }
3555:
1.164 kristaps 3556: /* Search for term matches. */
1.167 kristaps 3557: for (cp = r->xmbtab; cp; cp = cp->next)
1.166 kristaps 3558: if (0 == strncmp(p, cp->key.p, cp->key.sz))
1.164 kristaps 3559: break;
3560:
3561: if (NULL != cp) {
3562: /*
3563: * A match has been found.
3564: * Append the match to the array and move
3565: * forward by its keysize.
3566: */
1.207 schwarze 3567: res = mandoc_realloc(res,
3568: ssz + cp->val.sz + 1);
1.166 kristaps 3569: memcpy(res + ssz, cp->val.p, cp->val.sz);
3570: ssz += cp->val.sz;
3571: p += (int)cp->key.sz;
1.164 kristaps 3572: continue;
3573: }
3574:
1.167 kristaps 3575: /*
3576: * Handle escapes carefully: we need to copy
3577: * over just the escape itself, or else we might
3578: * do replacements within the escape itself.
3579: * Make sure to pass along the bogus string.
3580: */
3581: pp = p++;
3582: esc = mandoc_escape(&p, NULL, NULL);
3583: if (ESCAPE_ERROR == esc) {
3584: sz = strlen(pp);
1.164 kristaps 3585: res = mandoc_realloc(res, ssz + sz + 1);
3586: memcpy(res + ssz, pp, sz);
1.167 kristaps 3587: break;
1.164 kristaps 3588: }
1.207 schwarze 3589: /*
3590: * We bail out on bad escapes.
1.167 kristaps 3591: * No need to warn: we already did so when
3592: * roff_res() was called.
3593: */
3594: sz = (int)(p - pp);
3595: res = mandoc_realloc(res, ssz + sz + 1);
3596: memcpy(res + ssz, pp, sz);
3597: ssz += sz;
1.164 kristaps 3598: }
3599:
3600: res[(int)ssz] = '\0';
1.277 schwarze 3601: return res;
1.227 schwarze 3602: }
3603:
3604: int
3605: roff_getformat(const struct roff *r)
3606: {
3607:
1.277 schwarze 3608: return r->format;
1.174 kristaps 3609: }
3610:
3611: /*
1.207 schwarze 3612: * Find out whether a line is a macro line or not.
1.174 kristaps 3613: * If it is, adjust the current position and return one; if it isn't,
3614: * return zero and don't change the current position.
3615: * If the control character has been set with `.cc', then let that grain
3616: * precedence.
3617: * This is slighly contrary to groff, where using the non-breaking
3618: * control character when `cc' has been invoked will cause the
3619: * non-breaking macro contents to be printed verbatim.
3620: */
3621: int
3622: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
3623: {
3624: int pos;
3625:
3626: pos = *ppos;
3627:
1.303 schwarze 3628: if (r->control != '\0' && cp[pos] == r->control)
1.174 kristaps 3629: pos++;
1.303 schwarze 3630: else if (r->control != '\0')
1.277 schwarze 3631: return 0;
1.174 kristaps 3632: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
3633: pos += 2;
3634: else if ('.' == cp[pos] || '\'' == cp[pos])
3635: pos++;
3636: else
1.277 schwarze 3637: return 0;
1.174 kristaps 3638:
3639: while (' ' == cp[pos] || '\t' == cp[pos])
3640: pos++;
3641:
3642: *ppos = pos;
1.277 schwarze 3643: return 1;
1.74 kristaps 3644: }
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