Annotation of mandoc/roff.c, Revision 1.306
1.306 ! schwarze 1: /* $Id: roff.c,v 1.305 2017/06/06 15:01:04 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",
225: "mc", "sp", "ta", "ti",
226: 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",
270: "return", "rfschar", "rhang", "rj",
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 */
1.299 schwarze 337: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.300 schwarze 338: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.301 schwarze 339: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.296 schwarze 340: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.295 schwarze 341: { roff_unsupp, NULL, NULL, 0 }, /* ab */
342: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
343: { roff_line_ignore, NULL, NULL, 0 }, /* af */
344: { roff_unsupp, NULL, NULL, 0 }, /* aln */
345: { roff_unsupp, NULL, NULL, 0 }, /* als */
346: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
347: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
348: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
349: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
350: { roff_ds, NULL, NULL, 0 }, /* as */
351: { roff_ds, NULL, NULL, 0 }, /* as1 */
352: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
353: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
354: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
355: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
356: { roff_unsupp, NULL, NULL, 0 }, /* blm */
357: { roff_unsupp, NULL, NULL, 0 }, /* box */
358: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
359: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
360: { roff_unsupp, NULL, NULL, 0 }, /* BP */
361: { roff_unsupp, NULL, NULL, 0 }, /* break */
362: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
363: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.296 schwarze 364: { roff_br, NULL, NULL, 0 }, /* brp */
1.295 schwarze 365: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
366: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
367: { roff_cc, NULL, NULL, 0 }, /* cc */
368: { roff_insec, NULL, NULL, 0 }, /* cf */
369: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
370: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
371: { roff_unsupp, NULL, NULL, 0 }, /* char */
372: { roff_unsupp, NULL, NULL, 0 }, /* chop */
373: { roff_line_ignore, NULL, NULL, 0 }, /* class */
374: { roff_insec, NULL, NULL, 0 }, /* close */
375: { roff_unsupp, NULL, NULL, 0 }, /* CL */
376: { roff_line_ignore, NULL, NULL, 0 }, /* color */
377: { roff_unsupp, NULL, NULL, 0 }, /* composite */
378: { roff_unsupp, NULL, NULL, 0 }, /* continue */
379: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
380: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
381: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
382: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
383: { roff_unsupp, NULL, NULL, 0 }, /* da */
384: { roff_unsupp, NULL, NULL, 0 }, /* dch */
385: { roff_Dd, NULL, NULL, 0 }, /* Dd */
386: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
387: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
388: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
389: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
390: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
391: { roff_unsupp, NULL, NULL, 0 }, /* device */
392: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
393: { roff_unsupp, NULL, NULL, 0 }, /* di */
394: { roff_unsupp, NULL, NULL, 0 }, /* do */
395: { roff_ds, NULL, NULL, 0 }, /* ds */
396: { roff_ds, NULL, NULL, 0 }, /* ds1 */
397: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
398: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.303 schwarze 399: { roff_ec, NULL, NULL, 0 }, /* ec */
1.295 schwarze 400: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
401: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
402: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
403: { roff_unsupp, NULL, NULL, 0 }, /* em */
404: { roff_EN, NULL, NULL, 0 }, /* EN */
1.303 schwarze 405: { roff_eo, NULL, NULL, 0 }, /* eo */
1.295 schwarze 406: { roff_unsupp, NULL, NULL, 0 }, /* EP */
407: { roff_EQ, NULL, NULL, 0 }, /* EQ */
408: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
409: { roff_unsupp, NULL, NULL, 0 }, /* ev */
410: { roff_unsupp, NULL, NULL, 0 }, /* evc */
411: { roff_unsupp, NULL, NULL, 0 }, /* ex */
412: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
413: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
414: { roff_unsupp, NULL, NULL, 0 }, /* fc */
415: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
416: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
417: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
418: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
419: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
420: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
421: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
422: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
423: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
424: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
425: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
426: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
427: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
428: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
429: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
430: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
431: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
432: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
433: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
434: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
435: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
436: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
437: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
438: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
439: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
440: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
441: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
442: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
443: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
444: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
445: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
446: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
447: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
448: { roff_unsupp, NULL, NULL, 0 }, /* index */
449: { roff_it, NULL, NULL, 0 }, /* it */
450: { roff_unsupp, NULL, NULL, 0 }, /* itc */
451: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
452: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
453: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
454: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
455: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
456: { roff_unsupp, NULL, NULL, 0 }, /* lc */
457: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
458: { roff_unsupp, NULL, NULL, 0 }, /* lds */
459: { roff_unsupp, NULL, NULL, 0 }, /* length */
460: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
461: { roff_insec, NULL, NULL, 0 }, /* lf */
462: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
463: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
464: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
465: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
466: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
467: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
468: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
469: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
470: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
471: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
472: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
473: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
474: { roff_insec, NULL, NULL, 0 }, /* mso */
475: { roff_line_ignore, NULL, NULL, 0 }, /* na */
476: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
477: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
478: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
479: { roff_unsupp, NULL, NULL, 0 }, /* nm */
480: { roff_unsupp, NULL, NULL, 0 }, /* nn */
481: { roff_unsupp, NULL, NULL, 0 }, /* nop */
482: { roff_nr, NULL, NULL, 0 }, /* nr */
483: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
484: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
485: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
486: { roff_insec, NULL, NULL, 0 }, /* nx */
487: { roff_insec, NULL, NULL, 0 }, /* open */
488: { roff_insec, NULL, NULL, 0 }, /* opena */
489: { roff_line_ignore, NULL, NULL, 0 }, /* os */
490: { roff_unsupp, NULL, NULL, 0 }, /* output */
491: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
492: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
493: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
494: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
495: { roff_insec, NULL, NULL, 0 }, /* pi */
496: { roff_unsupp, NULL, NULL, 0 }, /* PI */
497: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
498: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
499: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
500: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
501: { roff_line_ignore, NULL, NULL, 0 }, /* po */
502: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
503: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
504: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
505: { roff_insec, NULL, NULL, 0 }, /* pso */
506: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
507: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
508: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
509: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
510: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
511: { roff_unsupp, NULL, NULL, 0 }, /* return */
512: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
513: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
514: { roff_line_ignore, NULL, NULL, 0 }, /* rj */
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 = '\\';
1.67 kristaps 770: }
771:
772: void
773: roff_free(struct roff *r)
774: {
775: roff_free1(r);
1.295 schwarze 776: roffhash_free(r->reqtab);
1.67 kristaps 777: free(r);
778: }
779:
780: struct roff *
1.279 schwarze 781: roff_alloc(struct mparse *parse, int options)
1.67 kristaps 782: {
783: struct roff *r;
784:
1.98 schwarze 785: r = mandoc_calloc(1, sizeof(struct roff));
1.128 kristaps 786: r->parse = parse;
1.295 schwarze 787: r->reqtab = roffhash_alloc(0, ROFF_USERDEF);
1.199 schwarze 788: r->options = options;
1.227 schwarze 789: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.82 kristaps 790: r->rstackpos = -1;
1.303 schwarze 791: r->escape = '\\';
1.277 schwarze 792: return r;
1.265 schwarze 793: }
794:
1.266 schwarze 795: /* --- syntax tree state data management ---------------------------------- */
796:
1.265 schwarze 797: static void
798: roff_man_free1(struct roff_man *man)
799: {
800:
1.266 schwarze 801: if (man->first != NULL)
802: roff_node_delete(man, man->first);
1.265 schwarze 803: free(man->meta.msec);
804: free(man->meta.vol);
805: free(man->meta.os);
806: free(man->meta.arch);
807: free(man->meta.title);
808: free(man->meta.name);
809: free(man->meta.date);
810: }
811:
812: static void
813: roff_man_alloc1(struct roff_man *man)
814: {
815:
816: memset(&man->meta, 0, sizeof(man->meta));
817: man->first = mandoc_calloc(1, sizeof(*man->first));
818: man->first->type = ROFFT_ROOT;
819: man->last = man->first;
820: man->last_es = NULL;
821: man->flags = 0;
822: man->macroset = MACROSET_NONE;
823: man->lastsec = man->lastnamed = SEC_NONE;
824: man->next = ROFF_NEXT_CHILD;
825: }
826:
827: void
828: roff_man_reset(struct roff_man *man)
829: {
830:
831: roff_man_free1(man);
832: roff_man_alloc1(man);
833: }
834:
835: void
836: roff_man_free(struct roff_man *man)
837: {
838:
839: roff_man_free1(man);
840: free(man);
841: }
842:
843: struct roff_man *
844: roff_man_alloc(struct roff *roff, struct mparse *parse,
845: const char *defos, int quick)
846: {
847: struct roff_man *man;
848:
849: man = mandoc_calloc(1, sizeof(*man));
850: man->parse = parse;
851: man->roff = roff;
852: man->defos = defos;
853: man->quick = quick;
854: roff_man_alloc1(man);
1.296 schwarze 855: roff->man = man;
1.277 schwarze 856: return man;
1.67 kristaps 857: }
858:
1.266 schwarze 859: /* --- syntax tree handling ----------------------------------------------- */
860:
861: struct roff_node *
862: roff_node_alloc(struct roff_man *man, int line, int pos,
863: enum roff_type type, int tok)
864: {
865: struct roff_node *n;
866:
867: n = mandoc_calloc(1, sizeof(*n));
868: n->line = line;
869: n->pos = pos;
870: n->tok = tok;
871: n->type = type;
872: n->sec = man->lastsec;
873:
874: if (man->flags & MDOC_SYNOPSIS)
1.285 schwarze 875: n->flags |= NODE_SYNPRETTY;
1.266 schwarze 876: else
1.285 schwarze 877: n->flags &= ~NODE_SYNPRETTY;
1.266 schwarze 878: if (man->flags & MDOC_NEWLINE)
1.285 schwarze 879: n->flags |= NODE_LINE;
1.266 schwarze 880: man->flags &= ~MDOC_NEWLINE;
881:
1.277 schwarze 882: return n;
1.266 schwarze 883: }
884:
885: void
886: roff_node_append(struct roff_man *man, struct roff_node *n)
887: {
888:
889: switch (man->next) {
890: case ROFF_NEXT_SIBLING:
1.281 schwarze 891: if (man->last->next != NULL) {
892: n->next = man->last->next;
893: man->last->next->prev = n;
894: } else
895: man->last->parent->last = n;
1.266 schwarze 896: man->last->next = n;
897: n->prev = man->last;
898: n->parent = man->last->parent;
899: break;
900: case ROFF_NEXT_CHILD:
1.287 schwarze 901: if (man->last->child != NULL) {
902: n->next = man->last->child;
903: man->last->child->prev = n;
904: } else
905: man->last->last = n;
1.266 schwarze 906: man->last->child = n;
907: n->parent = man->last;
908: break;
909: default:
910: abort();
911: }
1.282 schwarze 912: man->last = n;
1.266 schwarze 913:
914: switch (n->type) {
915: case ROFFT_HEAD:
916: n->parent->head = n;
917: break;
918: case ROFFT_BODY:
1.282 schwarze 919: if (n->end != ENDBODY_NOT)
920: return;
1.266 schwarze 921: n->parent->body = n;
922: break;
923: case ROFFT_TAIL:
924: n->parent->tail = n;
925: break;
926: default:
1.282 schwarze 927: return;
1.266 schwarze 928: }
1.282 schwarze 929:
930: /*
931: * Copy over the normalised-data pointer of our parent. Not
932: * everybody has one, but copying a null pointer is fine.
933: */
934:
935: n->norm = n->parent->norm;
936: assert(n->parent->type == ROFFT_BLOCK);
1.266 schwarze 937: }
938:
1.267 schwarze 939: void
940: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
941: {
942: struct roff_node *n;
943:
944: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
945: n->string = roff_strdup(man->roff, word);
946: roff_node_append(man, n);
1.286 schwarze 947: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 948: man->next = ROFF_NEXT_SIBLING;
949: }
950:
951: void
952: roff_word_append(struct roff_man *man, const char *word)
953: {
954: struct roff_node *n;
955: char *addstr, *newstr;
956:
957: n = man->last;
958: addstr = roff_strdup(man->roff, word);
959: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
960: free(addstr);
961: free(n->string);
962: n->string = newstr;
963: man->next = ROFF_NEXT_SIBLING;
1.268 schwarze 964: }
965:
966: void
967: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
968: {
969: struct roff_node *n;
970:
971: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
972: roff_node_append(man, n);
973: man->next = ROFF_NEXT_CHILD;
974: }
975:
976: struct roff_node *
977: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
978: {
979: struct roff_node *n;
980:
981: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
982: roff_node_append(man, n);
983: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 984: return n;
1.267 schwarze 985: }
986:
1.266 schwarze 987: struct roff_node *
988: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
989: {
990: struct roff_node *n;
991:
992: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
993: roff_node_append(man, n);
994: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 995: return n;
1.266 schwarze 996: }
997:
998: struct roff_node *
999: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1000: {
1001: struct roff_node *n;
1002:
1003: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1004: roff_node_append(man, n);
1005: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1006: return n;
1.267 schwarze 1007: }
1008:
1009: void
1010: roff_addeqn(struct roff_man *man, const struct eqn *eqn)
1011: {
1012: struct roff_node *n;
1013:
1014: n = roff_node_alloc(man, eqn->ln, eqn->pos, ROFFT_EQN, TOKEN_NONE);
1015: n->eqn = eqn;
1016: if (eqn->ln > man->last->line)
1.285 schwarze 1017: n->flags |= NODE_LINE;
1.267 schwarze 1018: roff_node_append(man, n);
1019: man->next = ROFF_NEXT_SIBLING;
1020: }
1021:
1022: void
1023: roff_addtbl(struct roff_man *man, const struct tbl_span *tbl)
1024: {
1025: struct roff_node *n;
1026:
1027: if (man->macroset == MACROSET_MAN)
1.302 schwarze 1028: man_breakscope(man, ROFF_TS);
1.267 schwarze 1029: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
1030: n->span = tbl;
1031: roff_node_append(man, n);
1.286 schwarze 1032: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 1033: man->next = ROFF_NEXT_SIBLING;
1.266 schwarze 1034: }
1035:
1036: void
1037: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1038: {
1039:
1040: /* Adjust siblings. */
1041:
1042: if (n->prev)
1043: n->prev->next = n->next;
1044: if (n->next)
1045: n->next->prev = n->prev;
1046:
1047: /* Adjust parent. */
1048:
1049: if (n->parent != NULL) {
1050: if (n->parent->child == n)
1051: n->parent->child = n->next;
1052: if (n->parent->last == n)
1053: n->parent->last = n->prev;
1054: }
1055:
1056: /* Adjust parse point. */
1057:
1058: if (man == NULL)
1059: return;
1060: if (man->last == n) {
1061: if (n->prev == NULL) {
1062: man->last = n->parent;
1063: man->next = ROFF_NEXT_CHILD;
1064: } else {
1065: man->last = n->prev;
1066: man->next = ROFF_NEXT_SIBLING;
1067: }
1068: }
1069: if (man->first == n)
1070: man->first = NULL;
1071: }
1072:
1073: void
1074: roff_node_free(struct roff_node *n)
1075: {
1076:
1077: if (n->args != NULL)
1078: mdoc_argv_free(n->args);
1079: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1080: free(n->norm);
1081: free(n->string);
1082: free(n);
1083: }
1084:
1085: void
1086: roff_node_delete(struct roff_man *man, struct roff_node *n)
1087: {
1088:
1089: while (n->child != NULL)
1090: roff_node_delete(man, n->child);
1091: roff_node_unlink(man, n);
1092: roff_node_free(n);
1.269 schwarze 1093: }
1094:
1095: void
1096: deroff(char **dest, const struct roff_node *n)
1097: {
1098: char *cp;
1099: size_t sz;
1100:
1101: if (n->type != ROFFT_TEXT) {
1102: for (n = n->child; n != NULL; n = n->next)
1103: deroff(dest, n);
1104: return;
1105: }
1106:
1.288 schwarze 1107: /* Skip leading whitespace. */
1.269 schwarze 1108:
1.288 schwarze 1109: for (cp = n->string; *cp != '\0'; cp++) {
1.289 schwarze 1110: if (cp[0] == '\\' && cp[1] != '\0' &&
1111: strchr(" %&0^|~", cp[1]) != NULL)
1.269 schwarze 1112: cp++;
1.288 schwarze 1113: else if ( ! isspace((unsigned char)*cp))
1.269 schwarze 1114: break;
1115: }
1116:
1.289 schwarze 1117: /* Skip trailing backslash. */
1118:
1119: sz = strlen(cp);
1.290 schwarze 1120: if (sz > 0 && cp[sz - 1] == '\\')
1.289 schwarze 1121: sz--;
1122:
1.269 schwarze 1123: /* Skip trailing whitespace. */
1124:
1.289 schwarze 1125: for (; sz; sz--)
1.269 schwarze 1126: if ( ! isspace((unsigned char)cp[sz-1]))
1127: break;
1128:
1129: /* Skip empty strings. */
1130:
1131: if (sz == 0)
1132: return;
1133:
1134: if (*dest == NULL) {
1135: *dest = mandoc_strndup(cp, sz);
1136: return;
1137: }
1138:
1139: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1140: free(*dest);
1141: *dest = cp;
1.266 schwarze 1142: }
1143:
1144: /* --- main functions of the roff parser ---------------------------------- */
1145:
1.94 kristaps 1146: /*
1.206 schwarze 1147: * In the current line, expand escape sequences that tend to get
1148: * used in numerical expressions and conditional requests.
1149: * Also check the syntax of the remaining escape sequences.
1.154 kristaps 1150: */
1.172 schwarze 1151: static enum rofferr
1.238 schwarze 1152: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.94 kristaps 1153: {
1.208 schwarze 1154: char ubuf[24]; /* buffer to print the number */
1.205 schwarze 1155: const char *start; /* start of the string to process */
1.209 schwarze 1156: char *stesc; /* start of an escape sequence ('\\') */
1.108 schwarze 1157: const char *stnam; /* start of the name, after "[(*" */
1158: const char *cp; /* end of the name, e.g. before ']' */
1159: const char *res; /* the string to be substituted */
1.238 schwarze 1160: char *nbuf; /* new buffer to copy buf->buf to */
1.181 schwarze 1161: size_t maxl; /* expected length of the escape name */
1162: size_t naml; /* actual length of the escape name */
1.237 schwarze 1163: enum mandoc_esc esc; /* type of the escape sequence */
1164: int inaml; /* length returned from mandoc_escape() */
1.181 schwarze 1165: int expand_count; /* to avoid infinite loops */
1.206 schwarze 1166: int npos; /* position in numeric expression */
1.218 schwarze 1167: int arg_complete; /* argument not interrupted by eol */
1.303 schwarze 1168: int done; /* no more input available */
1.206 schwarze 1169: char term; /* character terminating the escape */
1.94 kristaps 1170:
1.303 schwarze 1171: /* Search forward for comments. */
1172:
1173: done = 0;
1174: start = buf->buf + pos;
1175: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1176: if (stesc[0] != r->escape || stesc[1] == '\0')
1177: continue;
1178: stesc++;
1179: if (*stesc != '"' && *stesc != '#')
1180: continue;
1181: cp = strchr(stesc--, '\0') - 1;
1182: if (*cp == '\n') {
1183: done = 1;
1184: cp--;
1185: }
1186: if (*cp == ' ' || *cp == '\t')
1187: mandoc_msg(MANDOCERR_SPACE_EOL, r->parse,
1188: ln, cp - buf->buf, NULL);
1189: while (stesc > start && stesc[-1] == ' ')
1190: stesc--;
1191: *stesc = '\0';
1192: break;
1193: }
1194: if (stesc == start)
1195: return ROFF_CONT;
1196: stesc--;
1197:
1198: /* Notice the end of the input. */
1199:
1200: if (*stesc == '\n') {
1201: *stesc-- = '\0';
1202: done = 1;
1203: }
1204:
1.170 schwarze 1205: expand_count = 0;
1.303 schwarze 1206: while (stesc >= start) {
1.170 schwarze 1207:
1.205 schwarze 1208: /* Search backwards for the next backslash. */
1209:
1.303 schwarze 1210: if (*stesc != r->escape) {
1211: if (*stesc == '\\') {
1212: *stesc = '\0';
1213: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1214: buf->buf, stesc + 1) + 1;
1215: start = nbuf + pos;
1216: stesc = nbuf + (stesc - buf->buf);
1217: free(buf->buf);
1218: buf->buf = nbuf;
1219: }
1220: stesc--;
1.205 schwarze 1221: continue;
1.303 schwarze 1222: }
1.205 schwarze 1223:
1224: /* If it is escaped, skip it. */
1225:
1226: for (cp = stesc - 1; cp >= start; cp--)
1.303 schwarze 1227: if (*cp != r->escape)
1.205 schwarze 1228: break;
1229:
1.238 schwarze 1230: if ((stesc - cp) % 2 == 0) {
1.303 schwarze 1231: while (stesc > cp)
1232: *stesc-- = '\\';
1.205 schwarze 1233: continue;
1.303 schwarze 1234: } else if (stesc[1] != '\0') {
1235: *stesc = '\\';
1236: } else {
1237: *stesc-- = '\0';
1238: if (done)
1239: continue;
1240: else
1241: return ROFF_APPEND;
1.205 schwarze 1242: }
1.108 schwarze 1243:
1.206 schwarze 1244: /* Decide whether to expand or to check only. */
1.108 schwarze 1245:
1.206 schwarze 1246: term = '\0';
1.205 schwarze 1247: cp = stesc + 1;
1.181 schwarze 1248: switch (*cp) {
1.207 schwarze 1249: case '*':
1.181 schwarze 1250: res = NULL;
1251: break;
1.207 schwarze 1252: case 'B':
1253: case 'w':
1.206 schwarze 1254: term = cp[1];
1255: /* FALLTHROUGH */
1.207 schwarze 1256: case 'n':
1.181 schwarze 1257: res = ubuf;
1258: break;
1259: default:
1.237 schwarze 1260: esc = mandoc_escape(&cp, &stnam, &inaml);
1261: if (esc == ESCAPE_ERROR ||
1262: (esc == ESCAPE_SPECIAL &&
1.279 schwarze 1263: mchars_spec2cp(stnam, inaml) < 0))
1.219 schwarze 1264: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.238 schwarze 1265: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1266: "%.*s", (int)(cp - stesc), stesc);
1.303 schwarze 1267: stesc--;
1.205 schwarze 1268: continue;
1.152 kristaps 1269: }
1270:
1.205 schwarze 1271: if (EXPAND_LIMIT < ++expand_count) {
1272: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.238 schwarze 1273: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1274: return ROFF_IGN;
1.205 schwarze 1275: }
1.108 schwarze 1276:
1277: /*
1278: * The third character decides the length
1.181 schwarze 1279: * of the name of the string or register.
1.108 schwarze 1280: * Save a pointer to the name.
1281: */
1282:
1.238 schwarze 1283: if (term == '\0') {
1.206 schwarze 1284: switch (*++cp) {
1.207 schwarze 1285: case '\0':
1.206 schwarze 1286: maxl = 0;
1287: break;
1.207 schwarze 1288: case '(':
1.206 schwarze 1289: cp++;
1290: maxl = 2;
1291: break;
1.207 schwarze 1292: case '[':
1.206 schwarze 1293: cp++;
1294: term = ']';
1295: maxl = 0;
1296: break;
1297: default:
1298: maxl = 1;
1299: break;
1300: }
1301: } else {
1302: cp += 2;
1.94 kristaps 1303: maxl = 0;
1304: }
1.108 schwarze 1305: stnam = cp;
1.94 kristaps 1306:
1.108 schwarze 1307: /* Advance to the end of the name. */
1.94 kristaps 1308:
1.253 schwarze 1309: naml = 0;
1.218 schwarze 1310: arg_complete = 1;
1.253 schwarze 1311: while (maxl == 0 || naml < maxl) {
1.238 schwarze 1312: if (*cp == '\0') {
1.219 schwarze 1313: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 1314: ln, (int)(stesc - buf->buf), stesc);
1.218 schwarze 1315: arg_complete = 0;
1.206 schwarze 1316: break;
1.153 kristaps 1317: }
1.238 schwarze 1318: if (maxl == 0 && *cp == term) {
1.206 schwarze 1319: cp++;
1.253 schwarze 1320: break;
1321: }
1322: if (*cp++ != '\\' || stesc[1] != 'w') {
1323: naml++;
1324: continue;
1325: }
1326: switch (mandoc_escape(&cp, NULL, NULL)) {
1327: case ESCAPE_SPECIAL:
1328: case ESCAPE_UNICODE:
1329: case ESCAPE_NUMBERED:
1330: case ESCAPE_OVERSTRIKE:
1331: naml++;
1332: break;
1333: default:
1.94 kristaps 1334: break;
1.206 schwarze 1335: }
1.94 kristaps 1336: }
1337:
1.108 schwarze 1338: /*
1339: * Retrieve the replacement string; if it is
1340: * undefined, resume searching for escapes.
1341: */
1342:
1.206 schwarze 1343: switch (stesc[1]) {
1.207 schwarze 1344: case '*':
1.218 schwarze 1345: if (arg_complete)
1346: res = roff_getstrn(r, stnam, naml);
1.206 schwarze 1347: break;
1.207 schwarze 1348: case 'B':
1.206 schwarze 1349: npos = 0;
1.218 schwarze 1350: ubuf[0] = arg_complete &&
1.261 schwarze 1351: roff_evalnum(r, ln, stnam, &npos,
1352: NULL, ROFFNUM_SCALE) &&
1.218 schwarze 1353: stnam + npos + 1 == cp ? '1' : '0';
1.206 schwarze 1354: ubuf[1] = '\0';
1355: break;
1.207 schwarze 1356: case 'n':
1.218 schwarze 1357: if (arg_complete)
1358: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1359: roff_getregn(r, stnam, naml));
1360: else
1361: ubuf[0] = '\0';
1.206 schwarze 1362: break;
1.207 schwarze 1363: case 'w':
1.218 schwarze 1364: /* use even incomplete args */
1.208 schwarze 1365: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.206 schwarze 1366: 24 * (int)naml);
1367: break;
1368: }
1.94 kristaps 1369:
1.238 schwarze 1370: if (res == NULL) {
1.219 schwarze 1371: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1372: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1373: "%.*s", (int)naml, stnam);
1.142 kristaps 1374: res = "";
1.246 schwarze 1375: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1376: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1377: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1378: return ROFF_IGN;
1.94 kristaps 1379: }
1380:
1.108 schwarze 1381: /* Replace the escape sequence by the string. */
1382:
1.209 schwarze 1383: *stesc = '\0';
1.238 schwarze 1384: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1385: buf->buf, res, cp) + 1;
1.94 kristaps 1386:
1.205 schwarze 1387: /* Prepare for the next replacement. */
1.94 kristaps 1388:
1.205 schwarze 1389: start = nbuf + pos;
1.238 schwarze 1390: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1391: free(buf->buf);
1392: buf->buf = nbuf;
1.154 kristaps 1393: }
1.277 schwarze 1394: return ROFF_CONT;
1.154 kristaps 1395: }
1396:
1397: /*
1.275 schwarze 1398: * Process text streams.
1.154 kristaps 1399: */
1400: static enum rofferr
1.305 schwarze 1401: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.154 kristaps 1402: {
1403: size_t sz;
1404: const char *start;
1.178 schwarze 1405: char *p;
1406: int isz;
1.154 kristaps 1407: enum mandoc_esc esc;
1408:
1.275 schwarze 1409: /* Spring the input line trap. */
1410:
1411: if (roffit_lines == 1) {
1412: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1413: free(buf->buf);
1414: buf->buf = p;
1415: buf->sz = isz + 1;
1416: *offs = 0;
1417: free(roffit_macro);
1418: roffit_lines = 0;
1.277 schwarze 1419: return ROFF_REPARSE;
1.275 schwarze 1420: } else if (roffit_lines > 1)
1421: --roffit_lines;
1422:
1.305 schwarze 1423: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1424: if (roffce_lines < 1) {
1425: r->man->last = roffce_node;
1426: r->man->next = ROFF_NEXT_SIBLING;
1427: roffce_lines = 0;
1428: roffce_node = NULL;
1429: } else
1430: roffce_lines--;
1431: }
1432:
1.275 schwarze 1433: /* Convert all breakable hyphens into ASCII_HYPH. */
1434:
1.238 schwarze 1435: start = p = buf->buf + pos;
1.154 kristaps 1436:
1.238 schwarze 1437: while (*p != '\0') {
1.154 kristaps 1438: sz = strcspn(p, "-\\");
1439: p += sz;
1440:
1.238 schwarze 1441: if (*p == '\0')
1.159 kristaps 1442: break;
1443:
1.238 schwarze 1444: if (*p == '\\') {
1.154 kristaps 1445: /* Skip over escapes. */
1446: p++;
1.189 schwarze 1447: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.238 schwarze 1448: if (esc == ESCAPE_ERROR)
1.154 kristaps 1449: break;
1.264 schwarze 1450: while (*p == '-')
1451: p++;
1.155 kristaps 1452: continue;
1.159 kristaps 1453: } else if (p == start) {
1.158 kristaps 1454: p++;
1.155 kristaps 1455: continue;
1.158 kristaps 1456: }
1.155 kristaps 1457:
1.171 schwarze 1458: if (isalpha((unsigned char)p[-1]) &&
1459: isalpha((unsigned char)p[1]))
1.155 kristaps 1460: *p = ASCII_HYPH;
1461: p++;
1.94 kristaps 1462: }
1.277 schwarze 1463: return ROFF_CONT;
1.94 kristaps 1464: }
1465:
1.67 kristaps 1466: enum rofferr
1.238 schwarze 1467: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.67 kristaps 1468: {
1.294 schwarze 1469: enum roff_tok t;
1.109 kristaps 1470: enum rofferr e;
1.238 schwarze 1471: int pos; /* parse point */
1.243 schwarze 1472: int spos; /* saved parse point for messages */
1.238 schwarze 1473: int ppos; /* original offset in buf->buf */
1474: int ctl; /* macro line (boolean) */
1475:
1476: ppos = pos = *offs;
1.79 kristaps 1477:
1.230 schwarze 1478: /* Handle in-line equation delimiters. */
1479:
1.236 schwarze 1480: if (r->tbl == NULL &&
1481: r->last_eqn != NULL && r->last_eqn->delim &&
1.230 schwarze 1482: (r->eqn == NULL || r->eqn_inline)) {
1.238 schwarze 1483: e = roff_eqndelim(r, buf, pos);
1.230 schwarze 1484: if (e == ROFF_REPARSE)
1.277 schwarze 1485: return e;
1.230 schwarze 1486: assert(e == ROFF_CONT);
1487: }
1488:
1489: /* Expand some escape sequences. */
1.94 kristaps 1490:
1.238 schwarze 1491: e = roff_res(r, buf, ln, pos);
1.303 schwarze 1492: if (e == ROFF_IGN || e == ROFF_APPEND)
1.277 schwarze 1493: return e;
1.238 schwarze 1494: assert(e == ROFF_CONT);
1.94 kristaps 1495:
1.238 schwarze 1496: ctl = roff_getcontrol(r, buf->buf, &pos);
1.130 kristaps 1497:
1.94 kristaps 1498: /*
1.79 kristaps 1499: * First, if a scope is open and we're not a macro, pass the
1.252 schwarze 1500: * text through the macro's filter.
1501: * Equations process all content themselves.
1502: * Tables process almost all content themselves, but we want
1503: * to warn about macros before passing it there.
1.79 kristaps 1504: */
1.74 kristaps 1505:
1.252 schwarze 1506: if (r->last != NULL && ! ctl) {
1.78 kristaps 1507: t = r->last->tok;
1.238 schwarze 1508: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.294 schwarze 1509: if (e == ROFF_IGN)
1.277 schwarze 1510: return e;
1.294 schwarze 1511: assert(e == ROFF_CONT);
1.182 schwarze 1512: }
1.252 schwarze 1513: if (r->eqn != NULL)
1.277 schwarze 1514: return eqn_read(&r->eqn, ln, buf->buf, ppos, offs);
1.252 schwarze 1515: if (r->tbl != NULL && ( ! ctl || buf->buf[pos] == '\0'))
1.277 schwarze 1516: return tbl_read(r->tbl, ln, buf->buf, ppos);
1.252 schwarze 1517: if ( ! ctl)
1.305 schwarze 1518: return roff_parsetext(r, buf, pos, offs);
1.228 schwarze 1519:
1520: /* Skip empty request lines. */
1521:
1.238 schwarze 1522: if (buf->buf[pos] == '"') {
1.228 schwarze 1523: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1524: ln, pos, NULL);
1.277 schwarze 1525: return ROFF_IGN;
1.238 schwarze 1526: } else if (buf->buf[pos] == '\0')
1.277 schwarze 1527: return ROFF_IGN;
1.67 kristaps 1528:
1.79 kristaps 1529: /*
1530: * If a scope is open, go to the child handler for that macro,
1531: * as it may want to preprocess before doing anything with it.
1.125 kristaps 1532: * Don't do so if an equation is open.
1.79 kristaps 1533: */
1.78 kristaps 1534:
1.79 kristaps 1535: if (r->last) {
1536: t = r->last->tok;
1.277 schwarze 1537: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1538: }
1.78 kristaps 1539:
1.243 schwarze 1540: /* No scope is open. This is a new request or macro. */
1541:
1542: spos = pos;
1543: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1544:
1545: /* Tables ignore most macros. */
1546:
1.294 schwarze 1547: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS)) {
1.243 schwarze 1548: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1549: ln, pos, buf->buf + spos);
1.257 schwarze 1550: if (t == ROFF_TS)
1.277 schwarze 1551: return ROFF_IGN;
1.257 schwarze 1552: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1553: pos++;
1.291 schwarze 1554: while (buf->buf[pos] == ' ')
1.257 schwarze 1555: pos++;
1.277 schwarze 1556: return tbl_read(r->tbl, ln, buf->buf, pos);
1.243 schwarze 1557: }
1558:
1.305 schwarze 1559: /* For now, let high level macros abort .ce mode. */
1560:
1561: if (ctl && roffce_node != NULL &&
1562: (t == TOKEN_NONE || t == ROFF_EQ || t == ROFF_TS)) {
1563: r->man->last = roffce_node;
1564: r->man->next = ROFF_NEXT_SIBLING;
1565: roffce_lines = 0;
1566: roffce_node = NULL;
1567: }
1568:
1.79 kristaps 1569: /*
1.243 schwarze 1570: * This is neither a roff request nor a user-defined macro.
1571: * Let the standard macro set parsers handle it.
1.79 kristaps 1572: */
1.67 kristaps 1573:
1.294 schwarze 1574: if (t == TOKEN_NONE)
1.277 schwarze 1575: return ROFF_CONT;
1.243 schwarze 1576:
1577: /* Execute a roff request or a user defined macro. */
1.67 kristaps 1578:
1.296 schwarze 1579: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.74 kristaps 1580: }
1581:
1.117 kristaps 1582: void
1.74 kristaps 1583: roff_endparse(struct roff *r)
1584: {
1585:
1.110 kristaps 1586: if (r->last)
1.221 schwarze 1587: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1588: r->last->line, r->last->col,
1.295 schwarze 1589: roff_name[r->last->tok]);
1.117 kristaps 1590:
1.125 kristaps 1591: if (r->eqn) {
1.221 schwarze 1592: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1593: r->eqn->eqn.ln, r->eqn->eqn.pos, "EQ");
1.151 kristaps 1594: eqn_end(&r->eqn);
1.125 kristaps 1595: }
1596:
1.117 kristaps 1597: if (r->tbl) {
1.221 schwarze 1598: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1599: r->tbl->line, r->tbl->pos, "TS");
1.151 kristaps 1600: tbl_end(&r->tbl);
1.117 kristaps 1601: }
1.67 kristaps 1602: }
1603:
1604: /*
1605: * Parse a roff node's type from the input buffer. This must be in the
1606: * form of ".foo xxx" in the usual way.
1607: */
1.294 schwarze 1608: static enum roff_tok
1.214 schwarze 1609: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.67 kristaps 1610: {
1.214 schwarze 1611: char *cp;
1.106 kristaps 1612: const char *mac;
1613: size_t maclen;
1.294 schwarze 1614: enum roff_tok t;
1.67 kristaps 1615:
1.214 schwarze 1616: cp = buf + *pos;
1617:
1618: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.294 schwarze 1619: return TOKEN_NONE;
1.67 kristaps 1620:
1.214 schwarze 1621: mac = cp;
1622: maclen = roff_getname(r, &cp, ln, ppos);
1.67 kristaps 1623:
1.306 ! schwarze 1624: t = (r->current_string = roff_getstrn(r, mac, maclen)) ?
! 1625: ROFF_USERDEF :
! 1626: (r->current_string = roff_getrenn(r, mac, maclen)) ?
! 1627: ROFF_RENAMED : roffhash_find(r->reqtab, mac, maclen);
1.67 kristaps 1628:
1.294 schwarze 1629: if (t != TOKEN_NONE)
1.214 schwarze 1630: *pos = cp - buf;
1.67 kristaps 1631:
1.277 schwarze 1632: return t;
1.67 kristaps 1633: }
1634:
1.266 schwarze 1635: /* --- handling of request blocks ----------------------------------------- */
1636:
1.67 kristaps 1637: static enum rofferr
1.76 kristaps 1638: roff_cblock(ROFF_ARGS)
1.67 kristaps 1639: {
1640:
1.79 kristaps 1641: /*
1642: * A block-close `..' should only be invoked as a child of an
1643: * ignore macro, otherwise raise a warning and just ignore it.
1644: */
1645:
1.238 schwarze 1646: if (r->last == NULL) {
1.221 schwarze 1647: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1648: ln, ppos, "..");
1.277 schwarze 1649: return ROFF_IGN;
1.76 kristaps 1650: }
1.67 kristaps 1651:
1.81 kristaps 1652: switch (r->last->tok) {
1.207 schwarze 1653: case ROFF_am:
1.220 schwarze 1654: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.207 schwarze 1655: case ROFF_ami:
1656: case ROFF_de:
1.108 schwarze 1657: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.207 schwarze 1658: case ROFF_dei:
1659: case ROFF_ig:
1.81 kristaps 1660: break;
1661: default:
1.221 schwarze 1662: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1663: ln, ppos, "..");
1.277 schwarze 1664: return ROFF_IGN;
1.76 kristaps 1665: }
1.67 kristaps 1666:
1.238 schwarze 1667: if (buf->buf[pos] != '\0')
1.217 schwarze 1668: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 1669: ".. %s", buf->buf + pos);
1.71 kristaps 1670:
1671: roffnode_pop(r);
1.76 kristaps 1672: roffnode_cleanscope(r);
1.277 schwarze 1673: return ROFF_IGN;
1.71 kristaps 1674:
1.67 kristaps 1675: }
1676:
1.76 kristaps 1677: static void
1678: roffnode_cleanscope(struct roff *r)
1.67 kristaps 1679: {
1680:
1.76 kristaps 1681: while (r->last) {
1.173 schwarze 1682: if (--r->last->endspan != 0)
1.76 kristaps 1683: break;
1684: roffnode_pop(r);
1685: }
1.67 kristaps 1686: }
1687:
1.195 schwarze 1688: static void
1689: roff_ccond(struct roff *r, int ln, int ppos)
1.74 kristaps 1690: {
1691:
1.76 kristaps 1692: if (NULL == r->last) {
1.221 schwarze 1693: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1694: ln, ppos, "\\}");
1.195 schwarze 1695: return;
1.76 kristaps 1696: }
1697:
1.82 kristaps 1698: switch (r->last->tok) {
1.207 schwarze 1699: case ROFF_el:
1700: case ROFF_ie:
1701: case ROFF_if:
1.82 kristaps 1702: break;
1703: default:
1.221 schwarze 1704: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1705: ln, ppos, "\\}");
1.195 schwarze 1706: return;
1.75 kristaps 1707: }
1708:
1.76 kristaps 1709: if (r->last->endspan > -1) {
1.221 schwarze 1710: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1711: ln, ppos, "\\}");
1.195 schwarze 1712: return;
1.76 kristaps 1713: }
1714:
1.75 kristaps 1715: roffnode_pop(r);
1.76 kristaps 1716: roffnode_cleanscope(r);
1.195 schwarze 1717: return;
1.76 kristaps 1718: }
1719:
1720: static enum rofferr
1.80 kristaps 1721: roff_block(ROFF_ARGS)
1.76 kristaps 1722: {
1.220 schwarze 1723: const char *name;
1724: char *iname, *cp;
1.213 schwarze 1725: size_t namesz;
1.106 kristaps 1726:
1.220 schwarze 1727: /* Ignore groff compatibility mode for now. */
1.76 kristaps 1728:
1.238 schwarze 1729: if (tok == ROFF_de1)
1.220 schwarze 1730: tok = ROFF_de;
1.251 schwarze 1731: else if (tok == ROFF_dei1)
1732: tok = ROFF_dei;
1.238 schwarze 1733: else if (tok == ROFF_am1)
1.220 schwarze 1734: tok = ROFF_am;
1.251 schwarze 1735: else if (tok == ROFF_ami1)
1736: tok = ROFF_ami;
1.220 schwarze 1737:
1738: /* Parse the macro name argument. */
1739:
1.238 schwarze 1740: cp = buf->buf + pos;
1741: if (tok == ROFF_ig) {
1.220 schwarze 1742: iname = NULL;
1743: namesz = 0;
1744: } else {
1745: iname = cp;
1746: namesz = roff_getname(r, &cp, ln, ppos);
1747: iname[namesz] = '\0';
1748: }
1.107 kristaps 1749:
1.220 schwarze 1750: /* Resolve the macro name argument if it is indirect. */
1.107 kristaps 1751:
1.238 schwarze 1752: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1753: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.220 schwarze 1754: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1755: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1756: "%.*s", (int)namesz, iname);
1757: namesz = 0;
1758: } else
1759: namesz = strlen(name);
1760: } else
1761: name = iname;
1.107 kristaps 1762:
1.238 schwarze 1763: if (namesz == 0 && tok != ROFF_ig) {
1.220 schwarze 1764: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1.295 schwarze 1765: ln, ppos, roff_name[tok]);
1.277 schwarze 1766: return ROFF_IGN;
1.220 schwarze 1767: }
1.80 kristaps 1768:
1.106 kristaps 1769: roffnode_push(r, tok, name, ln, ppos);
1770:
1771: /*
1772: * At the beginning of a `de' macro, clear the existing string
1773: * with the same name, if there is one. New content will be
1.193 schwarze 1774: * appended from roff_block_text() in multiline mode.
1.106 kristaps 1775: */
1.107 kristaps 1776:
1.238 schwarze 1777: if (tok == ROFF_de || tok == ROFF_dei)
1.213 schwarze 1778: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.76 kristaps 1779:
1.238 schwarze 1780: if (*cp == '\0')
1.277 schwarze 1781: return ROFF_IGN;
1.78 kristaps 1782:
1.220 schwarze 1783: /* Get the custom end marker. */
1.107 kristaps 1784:
1.220 schwarze 1785: iname = cp;
1.213 schwarze 1786: namesz = roff_getname(r, &cp, ln, ppos);
1.220 schwarze 1787:
1788: /* Resolve the end marker if it is indirect. */
1789:
1.238 schwarze 1790: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1791: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.220 schwarze 1792: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1793: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1794: "%.*s", (int)namesz, iname);
1795: namesz = 0;
1796: } else
1797: namesz = strlen(name);
1798: } else
1799: name = iname;
1800:
1.213 schwarze 1801: if (namesz)
1802: r->last->end = mandoc_strndup(name, namesz);
1.78 kristaps 1803:
1.238 schwarze 1804: if (*cp != '\0')
1.217 schwarze 1805: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1.295 schwarze 1806: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.74 kristaps 1807:
1.277 schwarze 1808: return ROFF_IGN;
1.78 kristaps 1809: }
1810:
1811: static enum rofferr
1.80 kristaps 1812: roff_block_sub(ROFF_ARGS)
1.79 kristaps 1813: {
1.294 schwarze 1814: enum roff_tok t;
1.79 kristaps 1815: int i, j;
1816:
1817: /*
1818: * First check whether a custom macro exists at this level. If
1819: * it does, then check against it. This is some of groff's
1820: * stranger behaviours. If we encountered a custom end-scope
1821: * tag and that tag also happens to be a "real" macro, then we
1822: * need to try interpreting it again as a real macro. If it's
1823: * not, then return ignore. Else continue.
1824: */
1825:
1826: if (r->last->end) {
1.130 kristaps 1827: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.238 schwarze 1828: if (buf->buf[i] != r->last->end[j])
1.79 kristaps 1829: break;
1830:
1.238 schwarze 1831: if (r->last->end[j] == '\0' &&
1832: (buf->buf[i] == '\0' ||
1833: buf->buf[i] == ' ' ||
1834: buf->buf[i] == '\t')) {
1.79 kristaps 1835: roffnode_pop(r);
1836: roffnode_cleanscope(r);
1837:
1.238 schwarze 1838: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.130 kristaps 1839: i++;
1840:
1841: pos = i;
1.238 schwarze 1842: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.294 schwarze 1843: TOKEN_NONE)
1.277 schwarze 1844: return ROFF_RERUN;
1845: return ROFF_IGN;
1.79 kristaps 1846: }
1847: }
1848:
1849: /*
1850: * If we have no custom end-query or lookup failed, then try
1851: * pulling it out of the hashtable.
1852: */
1853:
1.238 schwarze 1854: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.79 kristaps 1855:
1.238 schwarze 1856: if (t != ROFF_cblock) {
1857: if (tok != ROFF_ig)
1858: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.277 schwarze 1859: return ROFF_IGN;
1.106 kristaps 1860: }
1.79 kristaps 1861:
1.277 schwarze 1862: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1863: }
1864:
1865: static enum rofferr
1.80 kristaps 1866: roff_block_text(ROFF_ARGS)
1.78 kristaps 1867: {
1868:
1.238 schwarze 1869: if (tok != ROFF_ig)
1870: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.106 kristaps 1871:
1.277 schwarze 1872: return ROFF_IGN;
1.78 kristaps 1873: }
1874:
1875: static enum rofferr
1.82 kristaps 1876: roff_cond_sub(ROFF_ARGS)
1877: {
1.294 schwarze 1878: enum roff_tok t;
1.139 kristaps 1879: char *ep;
1.198 schwarze 1880: int rr;
1.82 kristaps 1881:
1882: rr = r->last->rule;
1.139 kristaps 1883: roffnode_cleanscope(r);
1.238 schwarze 1884: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.82 kristaps 1885:
1.139 kristaps 1886: /*
1.177 schwarze 1887: * Fully handle known macros when they are structurally
1888: * required or when the conditional evaluated to true.
1.87 kristaps 1889: */
1890:
1.294 schwarze 1891: if (t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT))
1.277 schwarze 1892: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.144 kristaps 1893:
1.196 schwarze 1894: /*
1895: * If `\}' occurs on a macro line without a preceding macro,
1896: * drop the line completely.
1897: */
1898:
1.238 schwarze 1899: ep = buf->buf + pos;
1900: if (ep[0] == '\\' && ep[1] == '}')
1.198 schwarze 1901: rr = 0;
1.196 schwarze 1902:
1.177 schwarze 1903: /* Always check for the closing delimiter `\}'. */
1.144 kristaps 1904:
1.238 schwarze 1905: while ((ep = strchr(ep, '\\')) != NULL) {
1906: if (*(++ep) == '}') {
1.197 schwarze 1907: *ep = '&';
1.238 schwarze 1908: roff_ccond(r, ln, ep - buf->buf - 1);
1.197 schwarze 1909: }
1.247 schwarze 1910: if (*ep != '\0')
1911: ++ep;
1.177 schwarze 1912: }
1.277 schwarze 1913: return rr ? ROFF_CONT : ROFF_IGN;
1.82 kristaps 1914: }
1915:
1916: static enum rofferr
1917: roff_cond_text(ROFF_ARGS)
1.78 kristaps 1918: {
1.140 kristaps 1919: char *ep;
1.198 schwarze 1920: int rr;
1.82 kristaps 1921:
1922: rr = r->last->rule;
1.140 kristaps 1923: roffnode_cleanscope(r);
1.82 kristaps 1924:
1.238 schwarze 1925: ep = buf->buf + pos;
1926: while ((ep = strchr(ep, '\\')) != NULL) {
1927: if (*(++ep) == '}') {
1.197 schwarze 1928: *ep = '&';
1.238 schwarze 1929: roff_ccond(r, ln, ep - buf->buf - 1);
1.197 schwarze 1930: }
1.247 schwarze 1931: if (*ep != '\0')
1932: ++ep;
1.78 kristaps 1933: }
1.277 schwarze 1934: return rr ? ROFF_CONT : ROFF_IGN;
1.74 kristaps 1935: }
1936:
1.266 schwarze 1937: /* --- handling of numeric and conditional expressions -------------------- */
1938:
1.204 schwarze 1939: /*
1940: * Parse a single signed integer number. Stop at the first non-digit.
1941: * If there is at least one digit, return success and advance the
1942: * parse point, else return failure and let the parse point unchanged.
1943: * Ignore overflows, treat them just like the C language.
1944: */
1.184 schwarze 1945: static int
1.261 schwarze 1946: roff_getnum(const char *v, int *pos, int *res, int flags)
1.184 schwarze 1947: {
1.261 schwarze 1948: int myres, scaled, n, p;
1.206 schwarze 1949:
1950: if (NULL == res)
1951: res = &myres;
1.184 schwarze 1952:
1953: p = *pos;
1954: n = v[p] == '-';
1.261 schwarze 1955: if (n || v[p] == '+')
1.184 schwarze 1956: p++;
1957:
1.261 schwarze 1958: if (flags & ROFFNUM_WHITE)
1959: while (isspace((unsigned char)v[p]))
1960: p++;
1961:
1.184 schwarze 1962: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.204 schwarze 1963: *res = 10 * *res + v[p] - '0';
1.184 schwarze 1964: if (p == *pos + n)
1965: return 0;
1966:
1967: if (n)
1968: *res = -*res;
1969:
1.254 schwarze 1970: /* Each number may be followed by one optional scaling unit. */
1971:
1972: switch (v[p]) {
1973: case 'f':
1.261 schwarze 1974: scaled = *res * 65536;
1.254 schwarze 1975: break;
1976: case 'i':
1.261 schwarze 1977: scaled = *res * 240;
1.254 schwarze 1978: break;
1979: case 'c':
1.261 schwarze 1980: scaled = *res * 240 / 2.54;
1.254 schwarze 1981: break;
1982: case 'v':
1983: case 'P':
1.261 schwarze 1984: scaled = *res * 40;
1.254 schwarze 1985: break;
1986: case 'm':
1987: case 'n':
1.261 schwarze 1988: scaled = *res * 24;
1.254 schwarze 1989: break;
1990: case 'p':
1.261 schwarze 1991: scaled = *res * 10 / 3;
1.254 schwarze 1992: break;
1993: case 'u':
1.261 schwarze 1994: scaled = *res;
1.254 schwarze 1995: break;
1996: case 'M':
1.261 schwarze 1997: scaled = *res * 6 / 25;
1.254 schwarze 1998: break;
1999: default:
1.261 schwarze 2000: scaled = *res;
1.254 schwarze 2001: p--;
2002: break;
2003: }
1.261 schwarze 2004: if (flags & ROFFNUM_SCALE)
2005: *res = scaled;
1.254 schwarze 2006:
2007: *pos = p + 1;
1.277 schwarze 2008: return 1;
1.184 schwarze 2009: }
2010:
1.198 schwarze 2011: /*
2012: * Evaluate a string comparison condition.
2013: * The first character is the delimiter.
2014: * Succeed if the string up to its second occurrence
2015: * matches the string up to its third occurence.
2016: * Advance the cursor after the third occurrence
2017: * or lacking that, to the end of the line.
2018: */
2019: static int
2020: roff_evalstrcond(const char *v, int *pos)
2021: {
2022: const char *s1, *s2, *s3;
2023: int match;
2024:
2025: match = 0;
2026: s1 = v + *pos; /* initial delimiter */
2027: s2 = s1 + 1; /* for scanning the first string */
2028: s3 = strchr(s2, *s1); /* for scanning the second string */
2029:
2030: if (NULL == s3) /* found no middle delimiter */
2031: goto out;
2032:
2033: while ('\0' != *++s3) {
2034: if (*s2 != *s3) { /* mismatch */
2035: s3 = strchr(s3, *s1);
2036: break;
2037: }
2038: if (*s3 == *s1) { /* found the final delimiter */
2039: match = 1;
2040: break;
2041: }
2042: s2++;
2043: }
2044:
2045: out:
2046: if (NULL == s3)
2047: s3 = strchr(s2, '\0');
1.242 schwarze 2048: else if (*s3 != '\0')
1.198 schwarze 2049: s3++;
2050: *pos = s3 - v;
1.277 schwarze 2051: return match;
1.198 schwarze 2052: }
2053:
1.204 schwarze 2054: /*
2055: * Evaluate an optionally negated single character, numerical,
2056: * or string condition.
2057: */
1.198 schwarze 2058: static int
1.271 schwarze 2059: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.88 kristaps 2060: {
1.271 schwarze 2061: char *cp, *name;
2062: size_t sz;
1.241 schwarze 2063: int number, savepos, wanttrue;
1.88 kristaps 2064:
1.198 schwarze 2065: if ('!' == v[*pos]) {
2066: wanttrue = 0;
2067: (*pos)++;
2068: } else
2069: wanttrue = 1;
2070:
1.88 kristaps 2071: switch (v[*pos]) {
1.240 schwarze 2072: case '\0':
1.277 schwarze 2073: return 0;
1.207 schwarze 2074: case 'n':
2075: case 'o':
1.88 kristaps 2076: (*pos)++;
1.277 schwarze 2077: return wanttrue;
1.207 schwarze 2078: case 'c':
2079: case 'd':
2080: case 'e':
2081: case 't':
1.239 schwarze 2082: case 'v':
1.88 kristaps 2083: (*pos)++;
1.277 schwarze 2084: return !wanttrue;
1.271 schwarze 2085: case 'r':
2086: cp = name = v + ++*pos;
2087: sz = roff_getname(r, &cp, ln, *pos);
2088: *pos = cp - v;
1.277 schwarze 2089: return (sz && roff_hasregn(r, name, sz)) == wanttrue;
1.88 kristaps 2090: default:
2091: break;
2092: }
2093:
1.241 schwarze 2094: savepos = *pos;
1.261 schwarze 2095: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.277 schwarze 2096: return (number > 0) == wanttrue;
1.241 schwarze 2097: else if (*pos == savepos)
1.277 schwarze 2098: return roff_evalstrcond(v, pos) == wanttrue;
1.204 schwarze 2099: else
1.277 schwarze 2100: return 0;
1.88 kristaps 2101: }
2102:
1.74 kristaps 2103: static enum rofferr
1.103 kristaps 2104: roff_line_ignore(ROFF_ARGS)
1.89 kristaps 2105: {
1.123 schwarze 2106:
1.277 schwarze 2107: return ROFF_IGN;
1.89 kristaps 2108: }
2109:
1.104 kristaps 2110: static enum rofferr
1.251 schwarze 2111: roff_insec(ROFF_ARGS)
2112: {
2113:
2114: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
1.295 schwarze 2115: ln, ppos, roff_name[tok]);
1.277 schwarze 2116: return ROFF_IGN;
1.251 schwarze 2117: }
2118:
2119: static enum rofferr
2120: roff_unsupp(ROFF_ARGS)
2121: {
2122:
2123: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
1.295 schwarze 2124: ln, ppos, roff_name[tok]);
1.277 schwarze 2125: return ROFF_IGN;
1.251 schwarze 2126: }
2127:
2128: static enum rofferr
1.82 kristaps 2129: roff_cond(ROFF_ARGS)
1.74 kristaps 2130: {
1.173 schwarze 2131:
2132: roffnode_push(r, tok, NULL, ln, ppos);
1.74 kristaps 2133:
1.207 schwarze 2134: /*
1.134 kristaps 2135: * An `.el' has no conditional body: it will consume the value
2136: * of the current rstack entry set in prior `ie' calls or
1.207 schwarze 2137: * defaults to DENY.
1.134 kristaps 2138: *
2139: * If we're not an `el', however, then evaluate the conditional.
2140: */
1.133 kristaps 2141:
1.238 schwarze 2142: r->last->rule = tok == ROFF_el ?
1.207 schwarze 2143: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.238 schwarze 2144: roff_evalcond(r, ln, buf->buf, &pos);
1.77 kristaps 2145:
1.134 kristaps 2146: /*
2147: * An if-else will put the NEGATION of the current evaluated
2148: * conditional into the stack of rules.
2149: */
2150:
1.238 schwarze 2151: if (tok == ROFF_ie) {
1.223 schwarze 2152: if (r->rstackpos + 1 == r->rstacksz) {
2153: r->rstacksz += 16;
2154: r->rstack = mandoc_reallocarray(r->rstack,
2155: r->rstacksz, sizeof(int));
1.134 kristaps 2156: }
1.198 schwarze 2157: r->rstack[++r->rstackpos] = !r->last->rule;
1.82 kristaps 2158: }
1.88 kristaps 2159:
2160: /* If the parent has false as its rule, then so do we. */
2161:
1.198 schwarze 2162: if (r->last->parent && !r->last->parent->rule)
2163: r->last->rule = 0;
1.88 kristaps 2164:
2165: /*
1.173 schwarze 2166: * Determine scope.
2167: * If there is nothing on the line after the conditional,
2168: * not even whitespace, use next-line scope.
1.88 kristaps 2169: */
1.74 kristaps 2170:
1.238 schwarze 2171: if (buf->buf[pos] == '\0') {
1.173 schwarze 2172: r->last->endspan = 2;
2173: goto out;
2174: }
2175:
1.238 schwarze 2176: while (buf->buf[pos] == ' ')
1.173 schwarze 2177: pos++;
2178:
2179: /* An opening brace requests multiline scope. */
1.75 kristaps 2180:
1.238 schwarze 2181: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.75 kristaps 2182: r->last->endspan = -1;
2183: pos += 2;
1.272 schwarze 2184: while (buf->buf[pos] == ' ')
2185: pos++;
1.173 schwarze 2186: goto out;
1.207 schwarze 2187: }
1.74 kristaps 2188:
1.77 kristaps 2189: /*
1.173 schwarze 2190: * Anything else following the conditional causes
2191: * single-line scope. Warn if the scope contains
2192: * nothing but trailing whitespace.
1.77 kristaps 2193: */
2194:
1.238 schwarze 2195: if (buf->buf[pos] == '\0')
1.216 schwarze 2196: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
1.295 schwarze 2197: ln, ppos, roff_name[tok]);
1.77 kristaps 2198:
1.173 schwarze 2199: r->last->endspan = 1;
1.74 kristaps 2200:
1.173 schwarze 2201: out:
1.75 kristaps 2202: *offs = pos;
1.277 schwarze 2203: return ROFF_RERUN;
1.83 schwarze 2204: }
2205:
2206: static enum rofferr
1.92 schwarze 2207: roff_ds(ROFF_ARGS)
2208: {
1.212 schwarze 2209: char *string;
2210: const char *name;
2211: size_t namesz;
1.96 kristaps 2212:
1.251 schwarze 2213: /* Ignore groff compatibility mode for now. */
2214:
2215: if (tok == ROFF_ds1)
2216: tok = ROFF_ds;
2217: else if (tok == ROFF_as1)
2218: tok = ROFF_as;
2219:
1.96 kristaps 2220: /*
1.212 schwarze 2221: * The first word is the name of the string.
2222: * If it is empty or terminated by an escape sequence,
2223: * abort the `ds' request without defining anything.
1.96 kristaps 2224: */
1.92 schwarze 2225:
1.238 schwarze 2226: name = string = buf->buf + pos;
2227: if (*name == '\0')
1.277 schwarze 2228: return ROFF_IGN;
1.92 schwarze 2229:
1.212 schwarze 2230: namesz = roff_getname(r, &string, ln, pos);
1.238 schwarze 2231: if (name[namesz] == '\\')
1.277 schwarze 2232: return ROFF_IGN;
1.212 schwarze 2233:
2234: /* Read past the initial double-quote, if any. */
1.238 schwarze 2235: if (*string == '"')
1.92 schwarze 2236: string++;
2237:
1.96 kristaps 2238: /* The rest is the value. */
1.212 schwarze 2239: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2240: ROFF_as == tok);
1.277 schwarze 2241: return ROFF_IGN;
1.92 schwarze 2242: }
2243:
1.204 schwarze 2244: /*
2245: * Parse a single operator, one or two characters long.
2246: * If the operator is recognized, return success and advance the
2247: * parse point, else return failure and let the parse point unchanged.
2248: */
2249: static int
2250: roff_getop(const char *v, int *pos, char *res)
2251: {
2252:
2253: *res = v[*pos];
2254:
2255: switch (*res) {
1.207 schwarze 2256: case '+':
2257: case '-':
2258: case '*':
2259: case '/':
2260: case '%':
2261: case '&':
2262: case ':':
1.204 schwarze 2263: break;
2264: case '<':
2265: switch (v[*pos + 1]) {
1.207 schwarze 2266: case '=':
1.204 schwarze 2267: *res = 'l';
2268: (*pos)++;
2269: break;
1.207 schwarze 2270: case '>':
1.204 schwarze 2271: *res = '!';
2272: (*pos)++;
2273: break;
1.207 schwarze 2274: case '?':
1.204 schwarze 2275: *res = 'i';
2276: (*pos)++;
2277: break;
2278: default:
2279: break;
2280: }
2281: break;
2282: case '>':
2283: switch (v[*pos + 1]) {
1.207 schwarze 2284: case '=':
1.204 schwarze 2285: *res = 'g';
2286: (*pos)++;
2287: break;
1.207 schwarze 2288: case '?':
1.204 schwarze 2289: *res = 'a';
2290: (*pos)++;
2291: break;
2292: default:
2293: break;
2294: }
2295: break;
2296: case '=':
2297: if ('=' == v[*pos + 1])
2298: (*pos)++;
2299: break;
2300: default:
1.277 schwarze 2301: return 0;
1.204 schwarze 2302: }
2303: (*pos)++;
2304:
1.277 schwarze 2305: return *res;
1.204 schwarze 2306: }
2307:
2308: /*
2309: * Evaluate either a parenthesized numeric expression
2310: * or a single signed integer number.
2311: */
2312: static int
1.235 schwarze 2313: roff_evalpar(struct roff *r, int ln,
1.261 schwarze 2314: const char *v, int *pos, int *res, int flags)
1.204 schwarze 2315: {
2316:
2317: if ('(' != v[*pos])
1.277 schwarze 2318: return roff_getnum(v, pos, res, flags);
1.204 schwarze 2319:
2320: (*pos)++;
1.261 schwarze 2321: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.277 schwarze 2322: return 0;
1.204 schwarze 2323:
1.206 schwarze 2324: /*
2325: * Omission of the closing parenthesis
2326: * is an error in validation mode,
2327: * but ignored in evaluation mode.
2328: */
2329:
1.204 schwarze 2330: if (')' == v[*pos])
2331: (*pos)++;
1.206 schwarze 2332: else if (NULL == res)
1.277 schwarze 2333: return 0;
1.204 schwarze 2334:
1.277 schwarze 2335: return 1;
1.204 schwarze 2336: }
2337:
2338: /*
2339: * Evaluate a complete numeric expression.
2340: * Proceed left to right, there is no concept of precedence.
2341: */
2342: static int
1.235 schwarze 2343: roff_evalnum(struct roff *r, int ln, const char *v,
1.261 schwarze 2344: int *pos, int *res, int flags)
1.204 schwarze 2345: {
2346: int mypos, operand2;
2347: char operator;
2348:
2349: if (NULL == pos) {
2350: mypos = 0;
2351: pos = &mypos;
2352: }
2353:
1.261 schwarze 2354: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2355: while (isspace((unsigned char)v[*pos]))
2356: (*pos)++;
2357:
1.261 schwarze 2358: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.277 schwarze 2359: return 0;
1.204 schwarze 2360:
2361: while (1) {
1.261 schwarze 2362: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2363: while (isspace((unsigned char)v[*pos]))
2364: (*pos)++;
2365:
2366: if ( ! roff_getop(v, pos, &operator))
2367: break;
2368:
1.261 schwarze 2369: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2370: while (isspace((unsigned char)v[*pos]))
2371: (*pos)++;
2372:
1.261 schwarze 2373: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.277 schwarze 2374: return 0;
1.204 schwarze 2375:
1.261 schwarze 2376: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2377: while (isspace((unsigned char)v[*pos]))
2378: (*pos)++;
1.206 schwarze 2379:
2380: if (NULL == res)
2381: continue;
1.204 schwarze 2382:
2383: switch (operator) {
1.207 schwarze 2384: case '+':
1.204 schwarze 2385: *res += operand2;
2386: break;
1.207 schwarze 2387: case '-':
1.204 schwarze 2388: *res -= operand2;
2389: break;
1.207 schwarze 2390: case '*':
1.204 schwarze 2391: *res *= operand2;
2392: break;
1.207 schwarze 2393: case '/':
1.244 schwarze 2394: if (operand2 == 0) {
1.235 schwarze 2395: mandoc_msg(MANDOCERR_DIVZERO,
1.234 kristaps 2396: r->parse, ln, *pos, v);
2397: *res = 0;
2398: break;
2399: }
1.204 schwarze 2400: *res /= operand2;
2401: break;
1.207 schwarze 2402: case '%':
1.244 schwarze 2403: if (operand2 == 0) {
2404: mandoc_msg(MANDOCERR_DIVZERO,
2405: r->parse, ln, *pos, v);
2406: *res = 0;
2407: break;
2408: }
1.204 schwarze 2409: *res %= operand2;
2410: break;
1.207 schwarze 2411: case '<':
1.204 schwarze 2412: *res = *res < operand2;
2413: break;
1.207 schwarze 2414: case '>':
1.204 schwarze 2415: *res = *res > operand2;
2416: break;
1.207 schwarze 2417: case 'l':
1.204 schwarze 2418: *res = *res <= operand2;
2419: break;
1.207 schwarze 2420: case 'g':
1.204 schwarze 2421: *res = *res >= operand2;
2422: break;
1.207 schwarze 2423: case '=':
1.204 schwarze 2424: *res = *res == operand2;
2425: break;
1.207 schwarze 2426: case '!':
1.204 schwarze 2427: *res = *res != operand2;
2428: break;
1.207 schwarze 2429: case '&':
1.204 schwarze 2430: *res = *res && operand2;
2431: break;
1.207 schwarze 2432: case ':':
1.204 schwarze 2433: *res = *res || operand2;
2434: break;
1.207 schwarze 2435: case 'i':
1.204 schwarze 2436: if (operand2 < *res)
2437: *res = operand2;
2438: break;
1.207 schwarze 2439: case 'a':
1.204 schwarze 2440: if (operand2 > *res)
2441: *res = operand2;
2442: break;
2443: default:
2444: abort();
2445: }
2446: }
1.277 schwarze 2447: return 1;
1.204 schwarze 2448: }
2449:
1.266 schwarze 2450: /* --- register management ------------------------------------------------ */
2451:
1.180 schwarze 2452: void
1.187 schwarze 2453: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.147 kristaps 2454: {
1.180 schwarze 2455: struct roffreg *reg;
2456:
2457: /* Search for an existing register with the same name. */
2458: reg = r->regtab;
2459:
2460: while (reg && strcmp(name, reg->key.p))
2461: reg = reg->next;
1.147 kristaps 2462:
1.180 schwarze 2463: if (NULL == reg) {
2464: /* Create a new register. */
2465: reg = mandoc_malloc(sizeof(struct roffreg));
2466: reg->key.p = mandoc_strdup(name);
2467: reg->key.sz = strlen(name);
1.187 schwarze 2468: reg->val = 0;
1.180 schwarze 2469: reg->next = r->regtab;
2470: r->regtab = reg;
2471: }
2472:
1.187 schwarze 2473: if ('+' == sign)
2474: reg->val += val;
2475: else if ('-' == sign)
2476: reg->val -= val;
2477: else
2478: reg->val = val;
1.147 kristaps 2479: }
2480:
1.192 schwarze 2481: /*
2482: * Handle some predefined read-only number registers.
2483: * For now, return -1 if the requested register is not predefined;
2484: * in case a predefined read-only register having the value -1
2485: * were to turn up, another special value would have to be chosen.
2486: */
2487: static int
1.273 schwarze 2488: roff_getregro(const struct roff *r, const char *name)
1.192 schwarze 2489: {
2490:
2491: switch (*name) {
1.273 schwarze 2492: case '$': /* Number of arguments of the last macro evaluated. */
1.277 schwarze 2493: return r->argc;
1.207 schwarze 2494: case 'A': /* ASCII approximation mode is always off. */
1.277 schwarze 2495: return 0;
1.207 schwarze 2496: case 'g': /* Groff compatibility mode is always on. */
1.277 schwarze 2497: return 1;
1.207 schwarze 2498: case 'H': /* Fixed horizontal resolution. */
1.277 schwarze 2499: return 24;
1.207 schwarze 2500: case 'j': /* Always adjust left margin only. */
1.277 schwarze 2501: return 0;
1.207 schwarze 2502: case 'T': /* Some output device is always defined. */
1.277 schwarze 2503: return 1;
1.207 schwarze 2504: case 'V': /* Fixed vertical resolution. */
1.277 schwarze 2505: return 40;
1.192 schwarze 2506: default:
1.277 schwarze 2507: return -1;
1.192 schwarze 2508: }
2509: }
2510:
1.181 schwarze 2511: int
1.180 schwarze 2512: roff_getreg(const struct roff *r, const char *name)
1.147 kristaps 2513: {
1.180 schwarze 2514: struct roffreg *reg;
1.192 schwarze 2515: int val;
2516:
2517: if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) {
1.273 schwarze 2518: val = roff_getregro(r, name + 1);
1.192 schwarze 2519: if (-1 != val)
1.277 schwarze 2520: return val;
1.192 schwarze 2521: }
1.180 schwarze 2522:
2523: for (reg = r->regtab; reg; reg = reg->next)
2524: if (0 == strcmp(name, reg->key.p))
1.277 schwarze 2525: return reg->val;
1.181 schwarze 2526:
1.277 schwarze 2527: return 0;
1.181 schwarze 2528: }
2529:
2530: static int
2531: roff_getregn(const struct roff *r, const char *name, size_t len)
2532: {
2533: struct roffreg *reg;
1.192 schwarze 2534: int val;
2535:
2536: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2537: val = roff_getregro(r, name + 1);
1.192 schwarze 2538: if (-1 != val)
1.277 schwarze 2539: return val;
1.192 schwarze 2540: }
1.181 schwarze 2541:
2542: for (reg = r->regtab; reg; reg = reg->next)
2543: if (len == reg->key.sz &&
2544: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2545: return reg->val;
1.271 schwarze 2546:
1.277 schwarze 2547: return 0;
1.271 schwarze 2548: }
2549:
2550: static int
2551: roff_hasregn(const struct roff *r, const char *name, size_t len)
2552: {
2553: struct roffreg *reg;
2554: int val;
2555:
2556: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2557: val = roff_getregro(r, name + 1);
1.271 schwarze 2558: if (-1 != val)
1.277 schwarze 2559: return 1;
1.271 schwarze 2560: }
2561:
2562: for (reg = r->regtab; reg; reg = reg->next)
2563: if (len == reg->key.sz &&
2564: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2565: return 1;
1.147 kristaps 2566:
1.277 schwarze 2567: return 0;
1.147 kristaps 2568: }
2569:
1.180 schwarze 2570: static void
2571: roff_freereg(struct roffreg *reg)
1.147 kristaps 2572: {
1.180 schwarze 2573: struct roffreg *old_reg;
1.147 kristaps 2574:
1.180 schwarze 2575: while (NULL != reg) {
2576: free(reg->key.p);
2577: old_reg = reg;
2578: reg = reg->next;
2579: free(old_reg);
2580: }
1.147 kristaps 2581: }
1.92 schwarze 2582:
2583: static enum rofferr
1.89 kristaps 2584: roff_nr(ROFF_ARGS)
1.83 schwarze 2585: {
1.212 schwarze 2586: char *key, *val;
2587: size_t keysz;
1.138 kristaps 2588: int iv;
1.187 schwarze 2589: char sign;
1.89 kristaps 2590:
1.238 schwarze 2591: key = val = buf->buf + pos;
2592: if (*key == '\0')
1.277 schwarze 2593: return ROFF_IGN;
1.212 schwarze 2594:
2595: keysz = roff_getname(r, &val, ln, pos);
1.238 schwarze 2596: if (key[keysz] == '\\')
1.277 schwarze 2597: return ROFF_IGN;
1.212 schwarze 2598: key[keysz] = '\0';
1.89 kristaps 2599:
1.187 schwarze 2600: sign = *val;
1.238 schwarze 2601: if (sign == '+' || sign == '-')
1.187 schwarze 2602: val++;
2603:
1.261 schwarze 2604: if (roff_evalnum(r, ln, val, NULL, &iv, ROFFNUM_SCALE))
1.204 schwarze 2605: roff_setreg(r, key, iv, sign);
1.109 kristaps 2606:
1.277 schwarze 2607: return ROFF_IGN;
1.203 schwarze 2608: }
2609:
2610: static enum rofferr
2611: roff_rr(ROFF_ARGS)
2612: {
2613: struct roffreg *reg, **prev;
1.212 schwarze 2614: char *name, *cp;
2615: size_t namesz;
1.203 schwarze 2616:
1.238 schwarze 2617: name = cp = buf->buf + pos;
2618: if (*name == '\0')
1.277 schwarze 2619: return ROFF_IGN;
1.212 schwarze 2620: namesz = roff_getname(r, &cp, ln, pos);
2621: name[namesz] = '\0';
1.203 schwarze 2622:
2623: prev = &r->regtab;
2624: while (1) {
2625: reg = *prev;
1.238 schwarze 2626: if (reg == NULL || !strcmp(name, reg->key.p))
1.203 schwarze 2627: break;
2628: prev = ®->next;
2629: }
1.238 schwarze 2630: if (reg != NULL) {
1.203 schwarze 2631: *prev = reg->next;
2632: free(reg->key.p);
2633: free(reg);
2634: }
1.277 schwarze 2635: return ROFF_IGN;
1.122 schwarze 2636: }
2637:
1.266 schwarze 2638: /* --- handler functions for roff requests -------------------------------- */
2639:
1.122 schwarze 2640: static enum rofferr
2641: roff_rm(ROFF_ARGS)
2642: {
2643: const char *name;
2644: char *cp;
1.212 schwarze 2645: size_t namesz;
1.122 schwarze 2646:
1.238 schwarze 2647: cp = buf->buf + pos;
2648: while (*cp != '\0') {
1.212 schwarze 2649: name = cp;
1.238 schwarze 2650: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.212 schwarze 2651: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.238 schwarze 2652: if (name[namesz] == '\\')
1.212 schwarze 2653: break;
1.122 schwarze 2654: }
1.277 schwarze 2655: return ROFF_IGN;
1.178 schwarze 2656: }
2657:
2658: static enum rofferr
2659: roff_it(ROFF_ARGS)
2660: {
2661: int iv;
2662:
2663: /* Parse the number of lines. */
1.261 schwarze 2664:
2665: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.222 schwarze 2666: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.238 schwarze 2667: ln, ppos, buf->buf + 1);
1.277 schwarze 2668: return ROFF_IGN;
1.178 schwarze 2669: }
2670:
1.262 schwarze 2671: while (isspace((unsigned char)buf->buf[pos]))
2672: pos++;
2673:
2674: /*
2675: * Arm the input line trap.
2676: * Special-casing "an-trap" is an ugly workaround to cope
2677: * with DocBook stupidly fiddling with man(7) internals.
2678: */
1.261 schwarze 2679:
1.178 schwarze 2680: roffit_lines = iv;
1.262 schwarze 2681: roffit_macro = mandoc_strdup(iv != 1 ||
2682: strcmp(buf->buf + pos, "an-trap") ?
2683: buf->buf + pos : "br");
1.277 schwarze 2684: return ROFF_IGN;
1.175 schwarze 2685: }
2686:
2687: static enum rofferr
2688: roff_Dd(ROFF_ARGS)
2689: {
2690: const char *const *cp;
2691:
1.227 schwarze 2692: if ((r->options & (MPARSE_MDOC | MPARSE_QUICK)) == 0)
1.175 schwarze 2693: for (cp = __mdoc_reserved; *cp; cp++)
2694: roff_setstr(r, *cp, NULL, 0);
2695:
1.227 schwarze 2696: if (r->format == 0)
2697: r->format = MPARSE_MDOC;
2698:
1.277 schwarze 2699: return ROFF_CONT;
1.175 schwarze 2700: }
2701:
2702: static enum rofferr
2703: roff_TH(ROFF_ARGS)
2704: {
2705: const char *const *cp;
2706:
1.227 schwarze 2707: if ((r->options & MPARSE_QUICK) == 0)
1.175 schwarze 2708: for (cp = __man_reserved; *cp; cp++)
2709: roff_setstr(r, *cp, NULL, 0);
2710:
1.227 schwarze 2711: if (r->format == 0)
2712: r->format = MPARSE_MAN;
2713:
1.277 schwarze 2714: return ROFF_CONT;
1.109 kristaps 2715: }
2716:
2717: static enum rofferr
2718: roff_TE(ROFF_ARGS)
2719: {
2720:
2721: if (NULL == r->tbl)
1.221 schwarze 2722: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2723: ln, ppos, "TE");
1.258 schwarze 2724: else if ( ! tbl_end(&r->tbl)) {
2725: free(buf->buf);
2726: buf->buf = mandoc_strdup(".sp");
2727: buf->sz = 4;
1.277 schwarze 2728: return ROFF_REPARSE;
1.258 schwarze 2729: }
1.277 schwarze 2730: return ROFF_IGN;
1.112 kristaps 2731: }
2732:
2733: static enum rofferr
2734: roff_T_(ROFF_ARGS)
2735: {
2736:
2737: if (NULL == r->tbl)
1.221 schwarze 2738: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2739: ln, ppos, "T&");
1.112 kristaps 2740: else
1.296 schwarze 2741: tbl_restart(ln, ppos, r->tbl);
1.112 kristaps 2742:
1.277 schwarze 2743: return ROFF_IGN;
1.109 kristaps 2744: }
2745:
1.230 schwarze 2746: /*
2747: * Handle in-line equation delimiters.
2748: */
2749: static enum rofferr
1.238 schwarze 2750: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.151 kristaps 2751: {
1.233 schwarze 2752: char *cp1, *cp2;
2753: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.151 kristaps 2754:
1.230 schwarze 2755: /*
2756: * Outside equations, look for an opening delimiter.
2757: * If we are inside an equation, we already know it is
2758: * in-line, or this function wouldn't have been called;
2759: * so look for a closing delimiter.
2760: */
2761:
1.238 schwarze 2762: cp1 = buf->buf + pos;
1.230 schwarze 2763: cp2 = strchr(cp1, r->eqn == NULL ?
2764: r->last_eqn->odelim : r->last_eqn->cdelim);
2765: if (cp2 == NULL)
1.277 schwarze 2766: return ROFF_CONT;
1.230 schwarze 2767:
1.233 schwarze 2768: *cp2++ = '\0';
2769: bef_pr = bef_nl = aft_nl = aft_pr = "";
2770:
2771: /* Handle preceding text, protecting whitespace. */
2772:
1.238 schwarze 2773: if (*buf->buf != '\0') {
1.233 schwarze 2774: if (r->eqn == NULL)
2775: bef_pr = "\\&";
2776: bef_nl = "\n";
2777: }
2778:
2779: /*
2780: * Prepare replacing the delimiter with an equation macro
2781: * and drop leading white space from the equation.
2782: */
1.230 schwarze 2783:
1.233 schwarze 2784: if (r->eqn == NULL) {
2785: while (*cp2 == ' ')
2786: cp2++;
2787: mac = ".EQ";
2788: } else
2789: mac = ".EN";
2790:
2791: /* Handle following text, protecting whitespace. */
2792:
2793: if (*cp2 != '\0') {
2794: aft_nl = "\n";
2795: if (r->eqn != NULL)
2796: aft_pr = "\\&";
2797: }
2798:
2799: /* Do the actual replacement. */
2800:
1.238 schwarze 2801: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.233 schwarze 2802: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.238 schwarze 2803: free(buf->buf);
2804: buf->buf = cp1;
1.230 schwarze 2805:
2806: /* Toggle the in-line state of the eqn subsystem. */
2807:
2808: r->eqn_inline = r->eqn == NULL;
1.277 schwarze 2809: return ROFF_REPARSE;
1.151 kristaps 2810: }
2811:
1.235 schwarze 2812: static enum rofferr
2813: roff_EQ(ROFF_ARGS)
1.125 kristaps 2814: {
1.151 kristaps 2815: struct eqn_node *e;
1.125 kristaps 2816:
1.238 schwarze 2817: assert(r->eqn == NULL);
1.235 schwarze 2818: e = eqn_alloc(ppos, ln, r->parse);
1.125 kristaps 2819:
1.230 schwarze 2820: if (r->last_eqn) {
1.125 kristaps 2821: r->last_eqn->next = e;
1.230 schwarze 2822: e->delim = r->last_eqn->delim;
2823: e->odelim = r->last_eqn->odelim;
2824: e->cdelim = r->last_eqn->cdelim;
2825: } else
1.125 kristaps 2826: r->first_eqn = r->last_eqn = e;
2827:
2828: r->eqn = r->last_eqn = e;
1.151 kristaps 2829:
1.238 schwarze 2830: if (buf->buf[pos] != '\0')
1.235 schwarze 2831: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 2832: ".EQ %s", buf->buf + pos);
1.151 kristaps 2833:
1.277 schwarze 2834: return ROFF_IGN;
1.125 kristaps 2835: }
2836:
2837: static enum rofferr
2838: roff_EN(ROFF_ARGS)
2839: {
2840:
1.221 schwarze 2841: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
1.277 schwarze 2842: return ROFF_IGN;
1.125 kristaps 2843: }
2844:
2845: static enum rofferr
1.109 kristaps 2846: roff_TS(ROFF_ARGS)
2847: {
1.176 schwarze 2848: struct tbl_node *tbl;
1.89 kristaps 2849:
1.115 kristaps 2850: if (r->tbl) {
1.221 schwarze 2851: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
2852: ln, ppos, "TS breaks TS");
1.151 kristaps 2853: tbl_end(&r->tbl);
1.115 kristaps 2854: }
1.83 schwarze 2855:
1.176 schwarze 2856: tbl = tbl_alloc(ppos, ln, r->parse);
1.113 kristaps 2857:
2858: if (r->last_tbl)
1.176 schwarze 2859: r->last_tbl->next = tbl;
1.113 kristaps 2860: else
1.176 schwarze 2861: r->first_tbl = r->last_tbl = tbl;
1.113 kristaps 2862:
1.176 schwarze 2863: r->tbl = r->last_tbl = tbl;
1.297 schwarze 2864: return ROFF_IGN;
2865: }
2866:
2867: static enum rofferr
2868: roff_onearg(ROFF_ARGS)
2869: {
2870: struct roff_node *n;
2871: char *cp;
1.305 schwarze 2872: int npos;
1.297 schwarze 2873:
1.302 schwarze 2874: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
2875: (tok == ROFF_sp || tok == ROFF_ti))
2876: man_breakscope(r->man, tok);
2877:
1.305 schwarze 2878: if (tok == ROFF_ce && roffce_node != NULL) {
2879: r->man->last = roffce_node;
2880: r->man->next = ROFF_NEXT_SIBLING;
2881: }
2882:
1.297 schwarze 2883: roff_elem_alloc(r->man, ln, ppos, tok);
2884: n = r->man->last;
2885:
2886: cp = buf->buf + pos;
2887: if (*cp != '\0') {
2888: while (*cp != '\0' && *cp != ' ')
2889: cp++;
2890: while (*cp == ' ')
2891: *cp++ = '\0';
2892: if (*cp != '\0')
2893: mandoc_vmsg(MANDOCERR_ARG_EXCESS,
2894: r->parse, ln, cp - buf->buf,
2895: "%s ... %s", roff_name[tok], cp);
2896: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.300 schwarze 2897: }
2898:
1.305 schwarze 2899: if (tok == ROFF_ce) {
2900: if (r->man->last->tok == ROFF_ce) {
2901: roff_word_alloc(r->man, ln, pos, "1");
2902: r->man->last->flags |= NODE_NOSRC;
2903: }
2904: npos = 0;
2905: if (roff_evalnum(r, ln, r->man->last->string, &npos,
2906: &roffce_lines, 0) == 0) {
2907: mandoc_vmsg(MANDOCERR_CE_NONUM,
2908: r->parse, ln, pos, "ce %s", buf->buf + pos);
2909: roffce_lines = 1;
2910: }
2911: if (roffce_lines < 1) {
2912: r->man->last = r->man->last->parent;
2913: roffce_node = NULL;
2914: roffce_lines = 0;
2915: } else
2916: roffce_node = r->man->last->parent;
2917: } else {
2918: n->flags |= NODE_VALID | NODE_ENDED;
2919: r->man->last = n;
2920: }
2921: n->flags |= NODE_LINE;
1.300 schwarze 2922: r->man->next = ROFF_NEXT_SIBLING;
2923: return ROFF_IGN;
2924: }
2925:
2926: static enum rofferr
2927: roff_manyarg(ROFF_ARGS)
2928: {
2929: struct roff_node *n;
2930: char *sp, *ep;
2931:
2932: roff_elem_alloc(r->man, ln, ppos, tok);
2933: n = r->man->last;
2934:
2935: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
2936: while (*ep != '\0' && *ep != ' ')
2937: ep++;
2938: while (*ep == ' ')
2939: *ep++ = '\0';
2940: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.297 schwarze 2941: }
2942:
2943: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
2944: r->man->last = n;
2945: r->man->next = ROFF_NEXT_SIBLING;
1.277 schwarze 2946: return ROFF_IGN;
1.251 schwarze 2947: }
2948:
2949: static enum rofferr
1.296 schwarze 2950: roff_br(ROFF_ARGS)
1.251 schwarze 2951: {
1.302 schwarze 2952: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
2953: man_breakscope(r->man, ROFF_br);
1.296 schwarze 2954: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
2955: if (buf->buf[pos] != '\0')
2956: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
2957: "%s %s", roff_name[tok], buf->buf + pos);
2958: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
2959: r->man->next = ROFF_NEXT_SIBLING;
2960: return ROFF_IGN;
1.92 schwarze 2961: }
2962:
1.105 kristaps 2963: static enum rofferr
1.174 kristaps 2964: roff_cc(ROFF_ARGS)
2965: {
2966: const char *p;
2967:
1.238 schwarze 2968: p = buf->buf + pos;
1.174 kristaps 2969:
1.238 schwarze 2970: if (*p == '\0' || (r->control = *p++) == '.')
1.303 schwarze 2971: r->control = '\0';
1.174 kristaps 2972:
1.238 schwarze 2973: if (*p != '\0')
1.260 schwarze 2974: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
2975: ln, p - buf->buf, "cc ... %s", p);
1.174 kristaps 2976:
1.277 schwarze 2977: return ROFF_IGN;
1.174 kristaps 2978: }
2979:
2980: static enum rofferr
1.303 schwarze 2981: roff_ec(ROFF_ARGS)
2982: {
2983: const char *p;
2984:
2985: p = buf->buf + pos;
2986: if (*p == '\0')
2987: r->escape = '\\';
2988: else {
2989: r->escape = *p;
2990: if (*++p != '\0')
2991: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
2992: ln, p - buf->buf, "ec ... %s", p);
2993: }
2994: return ROFF_IGN;
2995: }
2996:
2997: static enum rofferr
2998: roff_eo(ROFF_ARGS)
2999: {
3000: r->escape = '\0';
3001: if (buf->buf[pos] != '\0')
3002: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse,
3003: ln, pos, "eo %s", buf->buf + pos);
3004: return ROFF_IGN;
3005: }
3006:
3007: static enum rofferr
1.164 kristaps 3008: roff_tr(ROFF_ARGS)
3009: {
3010: const char *p, *first, *second;
3011: size_t fsz, ssz;
3012: enum mandoc_esc esc;
3013:
1.238 schwarze 3014: p = buf->buf + pos;
1.164 kristaps 3015:
1.238 schwarze 3016: if (*p == '\0') {
1.260 schwarze 3017: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.277 schwarze 3018: return ROFF_IGN;
1.164 kristaps 3019: }
3020:
1.238 schwarze 3021: while (*p != '\0') {
1.164 kristaps 3022: fsz = ssz = 1;
3023:
3024: first = p++;
1.238 schwarze 3025: if (*first == '\\') {
1.164 kristaps 3026: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3027: if (esc == ESCAPE_ERROR) {
1.219 schwarze 3028: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 3029: ln, (int)(p - buf->buf), first);
1.277 schwarze 3030: return ROFF_IGN;
1.164 kristaps 3031: }
3032: fsz = (size_t)(p - first);
3033: }
3034:
3035: second = p++;
1.238 schwarze 3036: if (*second == '\\') {
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), second);
1.277 schwarze 3041: return ROFF_IGN;
1.164 kristaps 3042: }
3043: ssz = (size_t)(p - second);
1.238 schwarze 3044: } else if (*second == '\0') {
1.260 schwarze 3045: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
3046: ln, first - buf->buf, "tr %s", first);
1.164 kristaps 3047: second = " ";
1.165 kristaps 3048: p--;
1.164 kristaps 3049: }
3050:
1.167 kristaps 3051: if (fsz > 1) {
1.207 schwarze 3052: roff_setstrn(&r->xmbtab, first, fsz,
3053: second, ssz, 0);
1.167 kristaps 3054: continue;
3055: }
3056:
1.238 schwarze 3057: if (r->xtab == NULL)
1.207 schwarze 3058: r->xtab = mandoc_calloc(128,
3059: sizeof(struct roffstr));
1.167 kristaps 3060:
3061: free(r->xtab[(int)*first].p);
3062: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3063: r->xtab[(int)*first].sz = ssz;
1.164 kristaps 3064: }
3065:
1.277 schwarze 3066: return ROFF_IGN;
1.164 kristaps 3067: }
3068:
3069: static enum rofferr
1.306 ! schwarze 3070: roff_rn(ROFF_ARGS)
! 3071: {
! 3072: const char *value;
! 3073: char *oldn, *newn, *end;
! 3074: size_t oldsz, newsz;
! 3075:
! 3076: oldn = newn = buf->buf + pos;
! 3077: if (*oldn == '\0')
! 3078: return ROFF_IGN;
! 3079:
! 3080: oldsz = roff_getname(r, &newn, ln, pos);
! 3081: if (oldn[oldsz] == '\\' || *newn == '\0')
! 3082: return ROFF_IGN;
! 3083:
! 3084: end = newn;
! 3085: newsz = roff_getname(r, &end, ln, newn - buf->buf);
! 3086: if (newsz == 0)
! 3087: return ROFF_IGN;
! 3088:
! 3089: /*
! 3090: * Rename a user-defined macro bearing the old name,
! 3091: * overriding an existing renamed high-level macro
! 3092: * bearing the new name, if that exists.
! 3093: */
! 3094:
! 3095: if ((value = roff_getstrn(r, oldn, oldsz)) != NULL) {
! 3096: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
! 3097: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
! 3098: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
! 3099: return ROFF_IGN;
! 3100: }
! 3101:
! 3102: /*
! 3103: * Rename a high-level macro bearing the old name,
! 3104: * either renaming it a second time if it was already
! 3105: * renamed before, or renaming it for the first time.
! 3106: * In both cases, override an existing user-defined
! 3107: * macro bearing the new name, if that exists.
! 3108: */
! 3109:
! 3110: if ((value = roff_getrenn(r, oldn, oldsz)) != NULL) {
! 3111: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
! 3112: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
! 3113: } else
! 3114: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
! 3115: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
! 3116: return ROFF_IGN;
! 3117: }
! 3118:
! 3119: static enum rofferr
1.105 kristaps 3120: roff_so(ROFF_ARGS)
3121: {
1.249 schwarze 3122: char *name, *cp;
1.105 kristaps 3123:
1.238 schwarze 3124: name = buf->buf + pos;
1.224 schwarze 3125: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.105 kristaps 3126:
3127: /*
3128: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3129: * opening anything that's not in our cwd or anything beneath
3130: * it. Thus, explicitly disallow traversing up the file-system
3131: * or using absolute paths.
3132: */
3133:
1.238 schwarze 3134: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.210 schwarze 3135: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
3136: ".so %s", name);
1.249 schwarze 3137: buf->sz = mandoc_asprintf(&cp,
3138: ".sp\nSee the file %s.\n.sp", name) + 1;
3139: free(buf->buf);
3140: buf->buf = cp;
3141: *offs = 0;
1.277 schwarze 3142: return ROFF_REPARSE;
1.105 kristaps 3143: }
3144:
3145: *offs = pos;
1.277 schwarze 3146: return ROFF_SO;
1.105 kristaps 3147: }
1.92 schwarze 3148:
1.266 schwarze 3149: /* --- user defined strings and macros ------------------------------------ */
3150:
1.106 kristaps 3151: static enum rofferr
3152: roff_userdef(ROFF_ARGS)
1.99 kristaps 3153: {
1.263 schwarze 3154: const char *arg[9], *ap;
1.106 kristaps 3155: char *cp, *n1, *n2;
1.292 schwarze 3156: int expand_count, i, ib, ie;
1.263 schwarze 3157: size_t asz, rsz;
1.106 kristaps 3158:
3159: /*
3160: * Collect pointers to macro argument strings
1.188 schwarze 3161: * and NUL-terminate them.
1.106 kristaps 3162: */
1.263 schwarze 3163:
1.273 schwarze 3164: r->argc = 0;
1.238 schwarze 3165: cp = buf->buf + pos;
1.273 schwarze 3166: for (i = 0; i < 9; i++) {
3167: if (*cp == '\0')
3168: arg[i] = "";
3169: else {
3170: arg[i] = mandoc_getarg(r->parse, &cp, ln, &pos);
3171: r->argc = i + 1;
3172: }
3173: }
1.99 kristaps 3174:
1.106 kristaps 3175: /*
3176: * Expand macro arguments.
1.99 kristaps 3177: */
1.263 schwarze 3178:
3179: buf->sz = strlen(r->current_string) + 1;
1.292 schwarze 3180: n1 = n2 = cp = mandoc_malloc(buf->sz);
1.263 schwarze 3181: memcpy(n1, r->current_string, buf->sz);
1.292 schwarze 3182: expand_count = 0;
1.263 schwarze 3183: while (*cp != '\0') {
3184:
3185: /* Scan ahead for the next argument invocation. */
3186:
3187: if (*cp++ != '\\')
3188: continue;
3189: if (*cp++ != '$')
3190: continue;
1.274 schwarze 3191: if (*cp == '*') { /* \\$* inserts all arguments */
3192: ib = 0;
3193: ie = r->argc - 1;
3194: } else { /* \\$1 .. \\$9 insert one argument */
3195: ib = ie = *cp - '1';
3196: if (ib < 0 || ib > 8)
3197: continue;
3198: }
1.263 schwarze 3199: cp -= 2;
1.292 schwarze 3200:
3201: /*
3202: * Prevent infinite recursion.
3203: */
3204:
3205: if (cp >= n2)
3206: expand_count = 1;
3207: else if (++expand_count > EXPAND_LIMIT) {
3208: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
3209: ln, (int)(cp - n1), NULL);
1.293 schwarze 3210: free(buf->buf);
3211: buf->buf = n1;
1.292 schwarze 3212: return ROFF_IGN;
3213: }
1.263 schwarze 3214:
3215: /*
3216: * Determine the size of the expanded argument,
3217: * taking escaping of quotes into account.
3218: */
3219:
1.274 schwarze 3220: asz = ie > ib ? ie - ib : 0; /* for blanks */
3221: for (i = ib; i <= ie; i++) {
3222: for (ap = arg[i]; *ap != '\0'; ap++) {
3223: asz++;
3224: if (*ap == '"')
3225: asz += 3;
3226: }
1.263 schwarze 3227: }
3228: if (asz != 3) {
3229:
3230: /*
3231: * Determine the size of the rest of the
3232: * unexpanded macro, including the NUL.
3233: */
3234:
3235: rsz = buf->sz - (cp - n1) - 3;
3236:
3237: /*
3238: * When shrinking, move before
3239: * releasing the storage.
3240: */
3241:
3242: if (asz < 3)
3243: memmove(cp + asz, cp + 3, rsz);
3244:
3245: /*
3246: * Resize the storage for the macro
3247: * and readjust the parse pointer.
3248: */
3249:
3250: buf->sz += asz - 3;
3251: n2 = mandoc_realloc(n1, buf->sz);
3252: cp = n2 + (cp - n1);
3253: n1 = n2;
3254:
3255: /*
3256: * When growing, make room
3257: * for the expanded argument.
3258: */
3259:
3260: if (asz > 3)
3261: memmove(cp + asz, cp + 3, rsz);
3262: }
3263:
3264: /* Copy the expanded argument, escaping quotes. */
3265:
3266: n2 = cp;
1.274 schwarze 3267: for (i = ib; i <= ie; i++) {
3268: for (ap = arg[i]; *ap != '\0'; ap++) {
3269: if (*ap == '"') {
3270: memcpy(n2, "\\(dq", 4);
3271: n2 += 4;
3272: } else
3273: *n2++ = *ap;
3274: }
3275: if (i < ie)
3276: *n2++ = ' ';
1.106 kristaps 3277: }
1.99 kristaps 3278: }
3279:
1.106 kristaps 3280: /*
3281: * Replace the macro invocation
3282: * by the expanded macro.
3283: */
1.263 schwarze 3284:
1.238 schwarze 3285: free(buf->buf);
3286: buf->buf = n1;
1.248 schwarze 3287: *offs = 0;
1.106 kristaps 3288:
1.277 schwarze 3289: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
3290: ROFF_REPARSE : ROFF_APPEND;
1.99 kristaps 3291: }
1.121 schwarze 3292:
1.306 ! schwarze 3293: /*
! 3294: * Calling a high-level macro that was renamed with .rn.
! 3295: * r->current_string has already been set up by roff_parse().
! 3296: */
! 3297: static enum rofferr
! 3298: roff_renamed(ROFF_ARGS)
! 3299: {
! 3300: char *nbuf;
! 3301:
! 3302: buf->sz = mandoc_asprintf(&nbuf, ".%s %s", r->current_string,
! 3303: buf->buf + pos) + 1;
! 3304: free(buf->buf);
! 3305: buf->buf = nbuf;
! 3306: return ROFF_CONT;
! 3307: }
! 3308:
1.212 schwarze 3309: static size_t
1.121 schwarze 3310: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3311: {
3312: char *name, *cp;
1.212 schwarze 3313: size_t namesz;
1.121 schwarze 3314:
3315: name = *cpp;
3316: if ('\0' == *name)
1.277 schwarze 3317: return 0;
1.121 schwarze 3318:
1.212 schwarze 3319: /* Read until end of name and terminate it with NUL. */
3320: for (cp = name; 1; cp++) {
3321: if ('\0' == *cp || ' ' == *cp) {
3322: namesz = cp - name;
3323: break;
3324: }
1.121 schwarze 3325: if ('\\' != *cp)
3326: continue;
1.215 schwarze 3327: namesz = cp - name;
3328: if ('{' == cp[1] || '}' == cp[1])
3329: break;
1.121 schwarze 3330: cp++;
3331: if ('\\' == *cp)
3332: continue;
1.224 schwarze 3333: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3334: "%.*s", (int)(cp - name + 1), name);
1.212 schwarze 3335: mandoc_escape((const char **)&cp, NULL, NULL);
3336: break;
1.121 schwarze 3337: }
3338:
3339: /* Read past spaces. */
3340: while (' ' == *cp)
3341: cp++;
3342:
3343: *cpp = cp;
1.277 schwarze 3344: return namesz;
1.121 schwarze 3345: }
3346:
1.106 kristaps 3347: /*
3348: * Store *string into the user-defined string called *name.
3349: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.193 schwarze 3350: * append == 0: replace mode
3351: * append == 1: single-line append mode
3352: * append == 2: multiline append mode, append '\n' after each call
1.106 kristaps 3353: */
1.94 kristaps 3354: static void
1.106 kristaps 3355: roff_setstr(struct roff *r, const char *name, const char *string,
1.193 schwarze 3356: int append)
1.92 schwarze 3357: {
1.164 kristaps 3358:
3359: roff_setstrn(&r->strtab, name, strlen(name), string,
1.207 schwarze 3360: string ? strlen(string) : 0, append);
1.164 kristaps 3361: }
3362:
3363: static void
1.166 kristaps 3364: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.193 schwarze 3365: const char *string, size_t stringsz, int append)
1.164 kristaps 3366: {
1.166 kristaps 3367: struct roffkv *n;
1.164 kristaps 3368: char *c;
3369: int i;
3370: size_t oldch, newch;
1.92 schwarze 3371:
1.106 kristaps 3372: /* Search for an existing string with the same name. */
1.164 kristaps 3373: n = *r;
3374:
1.211 schwarze 3375: while (n && (namesz != n->key.sz ||
3376: strncmp(n->key.p, name, namesz)))
1.92 schwarze 3377: n = n->next;
1.94 kristaps 3378:
3379: if (NULL == n) {
1.106 kristaps 3380: /* Create a new string table entry. */
1.166 kristaps 3381: n = mandoc_malloc(sizeof(struct roffkv));
3382: n->key.p = mandoc_strndup(name, namesz);
3383: n->key.sz = namesz;
3384: n->val.p = NULL;
3385: n->val.sz = 0;
1.164 kristaps 3386: n->next = *r;
3387: *r = n;
1.193 schwarze 3388: } else if (0 == append) {
1.166 kristaps 3389: free(n->val.p);
3390: n->val.p = NULL;
3391: n->val.sz = 0;
1.106 kristaps 3392: }
3393:
3394: if (NULL == string)
3395: return;
3396:
3397: /*
3398: * One additional byte for the '\n' in multiline mode,
3399: * and one for the terminating '\0'.
3400: */
1.193 schwarze 3401: newch = stringsz + (1 < append ? 2u : 1u);
1.164 kristaps 3402:
1.166 kristaps 3403: if (NULL == n->val.p) {
3404: n->val.p = mandoc_malloc(newch);
3405: *n->val.p = '\0';
1.106 kristaps 3406: oldch = 0;
3407: } else {
1.166 kristaps 3408: oldch = n->val.sz;
3409: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.106 kristaps 3410: }
3411:
3412: /* Skip existing content in the destination buffer. */
1.166 kristaps 3413: c = n->val.p + (int)oldch;
1.106 kristaps 3414:
3415: /* Append new content to the destination buffer. */
1.164 kristaps 3416: i = 0;
3417: while (i < (int)stringsz) {
1.106 kristaps 3418: /*
3419: * Rudimentary roff copy mode:
3420: * Handle escaped backslashes.
3421: */
1.164 kristaps 3422: if ('\\' == string[i] && '\\' == string[i + 1])
3423: i++;
3424: *c++ = string[i++];
1.106 kristaps 3425: }
1.94 kristaps 3426:
1.106 kristaps 3427: /* Append terminating bytes. */
1.193 schwarze 3428: if (1 < append)
1.106 kristaps 3429: *c++ = '\n';
1.163 kristaps 3430:
1.106 kristaps 3431: *c = '\0';
1.166 kristaps 3432: n->val.sz = (int)(c - n->val.p);
1.92 schwarze 3433: }
3434:
1.94 kristaps 3435: static const char *
3436: roff_getstrn(const struct roff *r, const char *name, size_t len)
1.92 schwarze 3437: {
1.166 kristaps 3438: const struct roffkv *n;
1.191 schwarze 3439: int i;
1.92 schwarze 3440:
1.164 kristaps 3441: for (n = r->strtab; n; n = n->next)
1.207 schwarze 3442: if (0 == strncmp(name, n->key.p, len) &&
3443: '\0' == n->key.p[(int)len])
1.277 schwarze 3444: return n->val.p;
1.191 schwarze 3445:
3446: for (i = 0; i < PREDEFS_MAX; i++)
3447: if (0 == strncmp(name, predefs[i].name, len) &&
3448: '\0' == predefs[i].name[(int)len])
1.277 schwarze 3449: return predefs[i].str;
1.306 ! schwarze 3450:
! 3451: return NULL;
! 3452: }
! 3453:
! 3454: /*
! 3455: * Check whether *name is the renamed name of a high-level macro.
! 3456: * Return the standard name, or NULL if it is not.
! 3457: */
! 3458: static const char *
! 3459: roff_getrenn(const struct roff *r, const char *name, size_t len)
! 3460: {
! 3461: const struct roffkv *n;
! 3462:
! 3463: for (n = r->rentab; n; n = n->next)
! 3464: if (0 == strncmp(name, n->key.p, len) &&
! 3465: '\0' == n->key.p[(int)len])
! 3466: return n->val.p;
1.94 kristaps 3467:
1.277 schwarze 3468: return NULL;
1.92 schwarze 3469: }
3470:
1.94 kristaps 3471: static void
1.167 kristaps 3472: roff_freestr(struct roffkv *r)
1.92 schwarze 3473: {
1.166 kristaps 3474: struct roffkv *n, *nn;
1.92 schwarze 3475:
1.167 kristaps 3476: for (n = r; n; n = nn) {
1.166 kristaps 3477: free(n->key.p);
3478: free(n->val.p);
1.92 schwarze 3479: nn = n->next;
3480: free(n);
3481: }
1.114 kristaps 3482: }
1.266 schwarze 3483:
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