Annotation of mandoc/roff.c, Revision 1.312
1.312 ! schwarze 1: /* $Id: roff.c,v 1.311 2017/06/14 19:39:18 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);
1.311 schwarze 149: static enum rofferr roff_als(ROFF_ARGS);
1.80 kristaps 150: static enum rofferr roff_block(ROFF_ARGS);
151: static enum rofferr roff_block_text(ROFF_ARGS);
152: static enum rofferr roff_block_sub(ROFF_ARGS);
1.296 schwarze 153: static enum rofferr roff_br(ROFF_ARGS);
1.80 kristaps 154: static enum rofferr roff_cblock(ROFF_ARGS);
1.174 kristaps 155: static enum rofferr roff_cc(ROFF_ARGS);
1.195 schwarze 156: static void roff_ccond(struct roff *, int, int);
1.82 kristaps 157: static enum rofferr roff_cond(ROFF_ARGS);
158: static enum rofferr roff_cond_text(ROFF_ARGS);
159: static enum rofferr roff_cond_sub(ROFF_ARGS);
1.92 schwarze 160: static enum rofferr roff_ds(ROFF_ARGS);
1.303 schwarze 161: static enum rofferr roff_ec(ROFF_ARGS);
162: static enum rofferr roff_eo(ROFF_ARGS);
1.238 schwarze 163: static enum rofferr roff_eqndelim(struct roff *, struct buf *, int);
1.271 schwarze 164: static int roff_evalcond(struct roff *r, int, char *, int *);
1.234 kristaps 165: static int roff_evalnum(struct roff *, int,
166: const char *, int *, int *, int);
167: static int roff_evalpar(struct roff *, int,
1.261 schwarze 168: const char *, int *, int *, int);
1.198 schwarze 169: static int roff_evalstrcond(const char *, int *);
1.155 kristaps 170: static void roff_free1(struct roff *);
1.180 schwarze 171: static void roff_freereg(struct roffreg *);
1.167 kristaps 172: static void roff_freestr(struct roffkv *);
1.212 schwarze 173: static size_t roff_getname(struct roff *, char **, int, int);
1.261 schwarze 174: static int roff_getnum(const char *, int *, int *, int);
1.184 schwarze 175: static int roff_getop(const char *, int *, char *);
1.181 schwarze 176: static int roff_getregn(const struct roff *,
177: const char *, size_t);
1.273 schwarze 178: static int roff_getregro(const struct roff *,
179: const char *name);
1.306 schwarze 180: static const char *roff_getrenn(const struct roff *,
181: const char *, size_t);
1.207 schwarze 182: static const char *roff_getstrn(const struct roff *,
1.94 kristaps 183: const char *, size_t);
1.271 schwarze 184: static int roff_hasregn(const struct roff *,
185: const char *, size_t);
1.251 schwarze 186: static enum rofferr roff_insec(ROFF_ARGS);
1.178 schwarze 187: static enum rofferr roff_it(ROFF_ARGS);
1.103 kristaps 188: static enum rofferr roff_line_ignore(ROFF_ARGS);
1.265 schwarze 189: static void roff_man_alloc1(struct roff_man *);
190: static void roff_man_free1(struct roff_man *);
1.300 schwarze 191: static enum rofferr roff_manyarg(ROFF_ARGS);
1.89 kristaps 192: static enum rofferr roff_nr(ROFF_ARGS);
1.297 schwarze 193: static enum rofferr roff_onearg(ROFF_ARGS);
1.294 schwarze 194: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.214 schwarze 195: int, int);
1.305 schwarze 196: static enum rofferr roff_parsetext(struct roff *, struct buf *,
197: int, int *);
1.306 schwarze 198: static enum rofferr roff_renamed(ROFF_ARGS);
1.238 schwarze 199: static enum rofferr roff_res(struct roff *, struct buf *, int, int);
1.122 schwarze 200: static enum rofferr roff_rm(ROFF_ARGS);
1.306 schwarze 201: static enum rofferr roff_rn(ROFF_ARGS);
1.203 schwarze 202: static enum rofferr roff_rr(ROFF_ARGS);
1.94 kristaps 203: static void roff_setstr(struct roff *,
1.106 kristaps 204: const char *, const char *, int);
1.207 schwarze 205: static void roff_setstrn(struct roffkv **, const char *,
1.164 kristaps 206: size_t, const char *, size_t, int);
1.105 kristaps 207: static enum rofferr roff_so(ROFF_ARGS);
1.164 kristaps 208: static enum rofferr roff_tr(ROFF_ARGS);
1.175 schwarze 209: static enum rofferr roff_Dd(ROFF_ARGS);
210: static enum rofferr roff_TH(ROFF_ARGS);
1.109 kristaps 211: static enum rofferr roff_TE(ROFF_ARGS);
212: static enum rofferr roff_TS(ROFF_ARGS);
1.125 kristaps 213: static enum rofferr roff_EQ(ROFF_ARGS);
214: static enum rofferr roff_EN(ROFF_ARGS);
1.112 kristaps 215: static enum rofferr roff_T_(ROFF_ARGS);
1.251 schwarze 216: static enum rofferr roff_unsupp(ROFF_ARGS);
1.106 kristaps 217: static enum rofferr roff_userdef(ROFF_ARGS);
1.67 kristaps 218:
1.266 schwarze 219: /* --- constant data ------------------------------------------------------ */
220:
1.261 schwarze 221: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
222: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
223:
1.294 schwarze 224: const char *__roff_name[MAN_MAX + 1] = {
1.305 schwarze 225: "br", "ce", "ft", "ll",
1.312 ! schwarze 226: "mc", "po", "rj", "sp",
! 227: "ta", "ti", NULL,
1.294 schwarze 228: "ab", "ad", "af", "aln",
229: "als", "am", "am1", "ami",
230: "ami1", "as", "as1", "asciify",
231: "backtrace", "bd", "bleedat", "blm",
232: "box", "boxa", "bp", "BP",
233: "break", "breakchar", "brnl", "brp",
1.305 schwarze 234: "brpnl", "c2", "cc",
1.294 schwarze 235: "cf", "cflags", "ch", "char",
236: "chop", "class", "close", "CL",
237: "color", "composite", "continue", "cp",
238: "cropat", "cs", "cu", "da",
239: "dch", "Dd", "de", "de1",
240: "defcolor", "dei", "dei1", "device",
241: "devicem", "di", "do", "ds",
242: "ds1", "dwh", "dt", "ec",
243: "ecr", "ecs", "el", "em",
244: "EN", "eo", "EP", "EQ",
245: "errprint", "ev", "evc", "ex",
246: "fallback", "fam", "fc", "fchar",
247: "fcolor", "fdeferlig", "feature", "fkern",
248: "fl", "flig", "fp", "fps",
249: "fschar", "fspacewidth", "fspecial", "ftr",
250: "fzoom", "gcolor", "hc", "hcode",
251: "hidechar", "hla", "hlm", "hpf",
252: "hpfa", "hpfcode", "hw", "hy",
253: "hylang", "hylen", "hym", "hypp",
254: "hys", "ie", "if", "ig",
255: "index", "it", "itc", "IX",
256: "kern", "kernafter", "kernbefore", "kernpair",
257: "lc", "lc_ctype", "lds", "length",
258: "letadj", "lf", "lg", "lhang",
259: "linetabs", "lnr", "lnrf", "lpfx",
1.304 schwarze 260: "ls", "lsm", "lt",
1.294 schwarze 261: "mediasize", "minss", "mk", "mso",
262: "na", "ne", "nh", "nhychar",
263: "nm", "nn", "nop", "nr",
264: "nrf", "nroff", "ns", "nx",
265: "open", "opena", "os", "output",
266: "padj", "papersize", "pc", "pev",
267: "pi", "PI", "pl", "pm",
1.312 ! schwarze 268: "pn", "pnr", "ps",
1.294 schwarze 269: "psbb", "pshape", "pso", "ptr",
270: "pvs", "rchar", "rd", "recursionlimit",
1.309 schwarze 271: "return", "rfschar", "rhang",
1.294 schwarze 272: "rm", "rn", "rnn", "rr",
273: "rs", "rt", "schar", "sentchar",
274: "shc", "shift", "sizes", "so",
275: "spacewidth", "special", "spreadwarn", "ss",
276: "sty", "substring", "sv", "sy",
1.300 schwarze 277: "T&", "tc", "TE",
1.301 schwarze 278: "TH", "tkf", "tl",
1.294 schwarze 279: "tm", "tm1", "tmc", "tr",
280: "track", "transchar", "trf", "trimat",
281: "trin", "trnt", "troff", "TS",
282: "uf", "ul", "unformat", "unwatch",
283: "unwatchn", "vpt", "vs", "warn",
284: "warnscale", "watch", "watchlength", "watchn",
285: "wh", "while", "write", "writec",
286: "writem", "xflag", ".", NULL,
1.306 schwarze 287: NULL, "text",
1.294 schwarze 288: "Dd", "Dt", "Os", "Sh",
289: "Ss", "Pp", "D1", "Dl",
290: "Bd", "Ed", "Bl", "El",
291: "It", "Ad", "An", "Ap",
292: "Ar", "Cd", "Cm", "Dv",
293: "Er", "Ev", "Ex", "Fa",
294: "Fd", "Fl", "Fn", "Ft",
295: "Ic", "In", "Li", "Nd",
296: "Nm", "Op", "Ot", "Pa",
297: "Rv", "St", "Va", "Vt",
298: "Xr", "%A", "%B", "%D",
299: "%I", "%J", "%N", "%O",
300: "%P", "%R", "%T", "%V",
301: "Ac", "Ao", "Aq", "At",
302: "Bc", "Bf", "Bo", "Bq",
303: "Bsx", "Bx", "Db", "Dc",
304: "Do", "Dq", "Ec", "Ef",
305: "Em", "Eo", "Fx", "Ms",
306: "No", "Ns", "Nx", "Ox",
307: "Pc", "Pf", "Po", "Pq",
308: "Qc", "Ql", "Qo", "Qq",
309: "Re", "Rs", "Sc", "So",
310: "Sq", "Sm", "Sx", "Sy",
311: "Tn", "Ux", "Xc", "Xo",
312: "Fo", "Fc", "Oo", "Oc",
313: "Bk", "Ek", "Bt", "Hf",
314: "Fr", "Ud", "Lb", "Lp",
315: "Lk", "Mt", "Brq", "Bro",
316: "Brc", "%C", "Es", "En",
1.299 schwarze 317: "Dx", "%Q", "%U", "Ta",
318: NULL,
1.294 schwarze 319: "TH", "SH", "SS", "TP",
320: "LP", "PP", "P", "IP",
321: "HP", "SM", "SB", "BI",
322: "IB", "BR", "RB", "R",
323: "B", "I", "IR", "RI",
1.299 schwarze 324: "nf", "fi",
1.294 schwarze 325: "RE", "RS", "DT", "UC",
1.297 schwarze 326: "PD", "AT", "in",
1.294 schwarze 327: "OP", "EX", "EE", "UR",
1.298 schwarze 328: "UE", NULL
1.294 schwarze 329: };
330: const char *const *roff_name = __roff_name;
331:
332: static struct roffmac roffs[TOKEN_NONE] = {
1.296 schwarze 333: { roff_br, NULL, NULL, 0 }, /* br */
1.305 schwarze 334: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.297 schwarze 335: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.298 schwarze 336: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.304 schwarze 337: { roff_onearg, NULL, NULL, 0 }, /* mc */
1.312 ! schwarze 338: { roff_onearg, NULL, NULL, 0 }, /* po */
1.309 schwarze 339: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.299 schwarze 340: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.300 schwarze 341: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.301 schwarze 342: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.296 schwarze 343: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.295 schwarze 344: { roff_unsupp, NULL, NULL, 0 }, /* ab */
345: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
346: { roff_line_ignore, NULL, NULL, 0 }, /* af */
347: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.311 schwarze 348: { roff_als, NULL, NULL, 0 }, /* als */
1.295 schwarze 349: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
350: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
351: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
352: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
353: { roff_ds, NULL, NULL, 0 }, /* as */
354: { roff_ds, NULL, NULL, 0 }, /* as1 */
355: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
356: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
357: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
358: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
359: { roff_unsupp, NULL, NULL, 0 }, /* blm */
360: { roff_unsupp, NULL, NULL, 0 }, /* box */
361: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
362: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
363: { roff_unsupp, NULL, NULL, 0 }, /* BP */
364: { roff_unsupp, NULL, NULL, 0 }, /* break */
365: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
366: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.296 schwarze 367: { roff_br, NULL, NULL, 0 }, /* brp */
1.295 schwarze 368: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
369: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
370: { roff_cc, NULL, NULL, 0 }, /* cc */
371: { roff_insec, NULL, NULL, 0 }, /* cf */
372: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
373: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
374: { roff_unsupp, NULL, NULL, 0 }, /* char */
375: { roff_unsupp, NULL, NULL, 0 }, /* chop */
376: { roff_line_ignore, NULL, NULL, 0 }, /* class */
377: { roff_insec, NULL, NULL, 0 }, /* close */
378: { roff_unsupp, NULL, NULL, 0 }, /* CL */
379: { roff_line_ignore, NULL, NULL, 0 }, /* color */
380: { roff_unsupp, NULL, NULL, 0 }, /* composite */
381: { roff_unsupp, NULL, NULL, 0 }, /* continue */
382: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
383: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
384: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
385: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
386: { roff_unsupp, NULL, NULL, 0 }, /* da */
387: { roff_unsupp, NULL, NULL, 0 }, /* dch */
388: { roff_Dd, NULL, NULL, 0 }, /* Dd */
389: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
390: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
391: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
392: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
393: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
394: { roff_unsupp, NULL, NULL, 0 }, /* device */
395: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
396: { roff_unsupp, NULL, NULL, 0 }, /* di */
397: { roff_unsupp, NULL, NULL, 0 }, /* do */
398: { roff_ds, NULL, NULL, 0 }, /* ds */
399: { roff_ds, NULL, NULL, 0 }, /* ds1 */
400: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
401: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.303 schwarze 402: { roff_ec, NULL, NULL, 0 }, /* ec */
1.295 schwarze 403: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
404: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
405: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
406: { roff_unsupp, NULL, NULL, 0 }, /* em */
407: { roff_EN, NULL, NULL, 0 }, /* EN */
1.303 schwarze 408: { roff_eo, NULL, NULL, 0 }, /* eo */
1.295 schwarze 409: { roff_unsupp, NULL, NULL, 0 }, /* EP */
410: { roff_EQ, NULL, NULL, 0 }, /* EQ */
411: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
412: { roff_unsupp, NULL, NULL, 0 }, /* ev */
413: { roff_unsupp, NULL, NULL, 0 }, /* evc */
414: { roff_unsupp, NULL, NULL, 0 }, /* ex */
415: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
416: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
417: { roff_unsupp, NULL, NULL, 0 }, /* fc */
418: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
419: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
420: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
421: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
422: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
423: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
424: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
425: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
426: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
427: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
428: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
429: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
430: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
431: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
432: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
433: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
434: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
435: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
436: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
437: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
438: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
439: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
440: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
441: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
442: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
443: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
444: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
445: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
446: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
447: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
448: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
449: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
450: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
451: { roff_unsupp, NULL, NULL, 0 }, /* index */
452: { roff_it, NULL, NULL, 0 }, /* it */
453: { roff_unsupp, NULL, NULL, 0 }, /* itc */
454: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
455: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
456: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
457: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
458: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
459: { roff_unsupp, NULL, NULL, 0 }, /* lc */
460: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
461: { roff_unsupp, NULL, NULL, 0 }, /* lds */
462: { roff_unsupp, NULL, NULL, 0 }, /* length */
463: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
464: { roff_insec, NULL, NULL, 0 }, /* lf */
465: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
466: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
467: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
468: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
469: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
470: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
471: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
472: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
473: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
474: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
475: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
476: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
477: { roff_insec, NULL, NULL, 0 }, /* mso */
478: { roff_line_ignore, NULL, NULL, 0 }, /* na */
479: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
480: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
481: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
482: { roff_unsupp, NULL, NULL, 0 }, /* nm */
483: { roff_unsupp, NULL, NULL, 0 }, /* nn */
484: { roff_unsupp, NULL, NULL, 0 }, /* nop */
485: { roff_nr, NULL, NULL, 0 }, /* nr */
486: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
487: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
488: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
489: { roff_insec, NULL, NULL, 0 }, /* nx */
490: { roff_insec, NULL, NULL, 0 }, /* open */
491: { roff_insec, NULL, NULL, 0 }, /* opena */
492: { roff_line_ignore, NULL, NULL, 0 }, /* os */
493: { roff_unsupp, NULL, NULL, 0 }, /* output */
494: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
495: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
496: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
497: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
498: { roff_insec, NULL, NULL, 0 }, /* pi */
499: { roff_unsupp, NULL, NULL, 0 }, /* PI */
500: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
501: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
502: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
503: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
504: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
505: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
506: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
507: { roff_insec, NULL, NULL, 0 }, /* pso */
508: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
509: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
510: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
511: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
512: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
513: { roff_unsupp, NULL, NULL, 0 }, /* return */
514: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
515: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
516: { roff_rm, NULL, NULL, 0 }, /* rm */
1.306 schwarze 517: { roff_rn, NULL, NULL, 0 }, /* rn */
1.295 schwarze 518: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
519: { roff_rr, NULL, NULL, 0 }, /* rr */
520: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
521: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
522: { roff_unsupp, NULL, NULL, 0 }, /* schar */
523: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
524: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
525: { roff_unsupp, NULL, NULL, 0 }, /* shift */
526: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
527: { roff_so, NULL, NULL, 0 }, /* so */
528: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
529: { roff_line_ignore, NULL, NULL, 0 }, /* special */
530: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
531: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
532: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
533: { roff_unsupp, NULL, NULL, 0 }, /* substring */
534: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
535: { roff_insec, NULL, NULL, 0 }, /* sy */
536: { roff_T_, NULL, NULL, 0 }, /* T& */
537: { roff_unsupp, NULL, NULL, 0 }, /* tc */
538: { roff_TE, NULL, NULL, 0 }, /* TE */
539: { roff_TH, NULL, NULL, 0 }, /* TH */
540: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
541: { roff_unsupp, NULL, NULL, 0 }, /* tl */
542: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
543: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
544: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
545: { roff_tr, NULL, NULL, 0 }, /* tr */
546: { roff_line_ignore, NULL, NULL, 0 }, /* track */
547: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
548: { roff_insec, NULL, NULL, 0 }, /* trf */
549: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
550: { roff_unsupp, NULL, NULL, 0 }, /* trin */
551: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
552: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
553: { roff_TS, NULL, NULL, 0 }, /* TS */
554: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
555: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
556: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
557: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
558: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
559: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
560: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
561: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
562: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
563: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
564: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
565: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
566: { roff_unsupp, NULL, NULL, 0 }, /* wh */
567: { roff_unsupp, NULL, NULL, 0 }, /* while */
568: { roff_insec, NULL, NULL, 0 }, /* write */
569: { roff_insec, NULL, NULL, 0 }, /* writec */
570: { roff_insec, NULL, NULL, 0 }, /* writem */
571: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
572: { roff_cblock, NULL, NULL, 0 }, /* . */
1.306 schwarze 573: { roff_renamed, NULL, NULL, 0 },
1.295 schwarze 574: { roff_userdef, NULL, NULL, 0 }
1.67 kristaps 575: };
576:
1.200 schwarze 577: /* not currently implemented: Ds em Eq LP Me PP pp Or Rd Sf SH */
1.175 schwarze 578: const char *const __mdoc_reserved[] = {
579: "Ac", "Ad", "An", "Ao", "Ap", "Aq", "Ar", "At",
580: "Bc", "Bd", "Bf", "Bk", "Bl", "Bo", "Bq",
581: "Brc", "Bro", "Brq", "Bsx", "Bt", "Bx",
582: "Cd", "Cm", "Db", "Dc", "Dd", "Dl", "Do", "Dq",
1.200 schwarze 583: "Dt", "Dv", "Dx", "D1",
584: "Ec", "Ed", "Ef", "Ek", "El", "Em",
585: "En", "Eo", "Er", "Es", "Ev", "Ex",
1.175 schwarze 586: "Fa", "Fc", "Fd", "Fl", "Fn", "Fo", "Fr", "Ft", "Fx",
1.200 schwarze 587: "Hf", "Ic", "In", "It", "Lb", "Li", "Lk", "Lp",
588: "Ms", "Mt", "Nd", "Nm", "No", "Ns", "Nx",
1.175 schwarze 589: "Oc", "Oo", "Op", "Os", "Ot", "Ox",
1.200 schwarze 590: "Pa", "Pc", "Pf", "Po", "Pp", "Pq",
591: "Qc", "Ql", "Qo", "Qq", "Re", "Rs", "Rv",
592: "Sc", "Sh", "Sm", "So", "Sq",
1.175 schwarze 593: "Ss", "St", "Sx", "Sy",
594: "Ta", "Tn", "Ud", "Ux", "Va", "Vt", "Xc", "Xo", "Xr",
1.200 schwarze 595: "%A", "%B", "%C", "%D", "%I", "%J", "%N", "%O",
1.175 schwarze 596: "%P", "%Q", "%R", "%T", "%U", "%V",
597: NULL
598: };
599:
1.200 schwarze 600: /* not currently implemented: BT DE DS ME MT PT SY TQ YS */
1.175 schwarze 601: const char *const __man_reserved[] = {
1.200 schwarze 602: "AT", "B", "BI", "BR", "DT",
603: "EE", "EN", "EQ", "EX", "HP", "I", "IB", "IP", "IR",
604: "LP", "OP", "P", "PD", "PP",
605: "R", "RB", "RE", "RI", "RS", "SB", "SH", "SM", "SS",
606: "TE", "TH", "TP", "TS", "T&", "UC", "UE", "UR",
1.175 schwarze 607: NULL
608: };
609:
1.141 kristaps 610: /* Array of injected predefined strings. */
611: #define PREDEFS_MAX 38
612: static const struct predef predefs[PREDEFS_MAX] = {
613: #include "predefs.in"
614: };
615:
1.305 schwarze 616: static int roffce_lines; /* number of input lines to center */
617: static struct roff_node *roffce_node; /* active request */
1.178 schwarze 618: static int roffit_lines; /* number of lines to delay */
619: static char *roffit_macro; /* nil-terminated macro line */
620:
1.207 schwarze 621:
1.266 schwarze 622: /* --- request table ------------------------------------------------------ */
623:
1.295 schwarze 624: struct ohash *
625: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.85 kristaps 626: {
1.295 schwarze 627: struct ohash *htab;
628: struct roffreq *req;
629: enum roff_tok tok;
630: size_t sz;
631: unsigned int slot;
1.85 kristaps 632:
1.295 schwarze 633: htab = mandoc_malloc(sizeof(*htab));
634: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.85 kristaps 635:
1.295 schwarze 636: for (tok = mintok; tok < maxtok; tok++) {
1.296 schwarze 637: if (roff_name[tok] == NULL)
638: continue;
1.295 schwarze 639: sz = strlen(roff_name[tok]);
640: req = mandoc_malloc(sizeof(*req) + sz + 1);
641: req->tok = tok;
642: memcpy(req->name, roff_name[tok], sz + 1);
643: slot = ohash_qlookup(htab, req->name);
644: ohash_insert(htab, slot, req);
1.85 kristaps 645: }
1.295 schwarze 646: return htab;
1.85 kristaps 647: }
648:
1.295 schwarze 649: void
650: roffhash_free(struct ohash *htab)
1.67 kristaps 651: {
1.295 schwarze 652: struct roffreq *req;
653: unsigned int slot;
1.67 kristaps 654:
1.295 schwarze 655: if (htab == NULL)
656: return;
657: for (req = ohash_first(htab, &slot); req != NULL;
658: req = ohash_next(htab, &slot))
659: free(req);
660: ohash_delete(htab);
661: free(htab);
662: }
663:
664: enum roff_tok
665: roffhash_find(struct ohash *htab, const char *name, size_t sz)
666: {
667: struct roffreq *req;
668: const char *end;
669:
670: if (sz) {
671: end = name + sz;
672: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
673: } else
674: req = ohash_find(htab, ohash_qlookup(htab, name));
675: return req == NULL ? TOKEN_NONE : req->tok;
1.67 kristaps 676: }
677:
1.266 schwarze 678: /* --- stack of request blocks -------------------------------------------- */
679:
1.67 kristaps 680: /*
681: * Pop the current node off of the stack of roff instructions currently
682: * pending.
683: */
684: static void
685: roffnode_pop(struct roff *r)
686: {
687: struct roffnode *p;
688:
1.75 kristaps 689: assert(r->last);
1.207 schwarze 690: p = r->last;
1.82 kristaps 691:
1.75 kristaps 692: r->last = r->last->parent;
1.106 kristaps 693: free(p->name);
694: free(p->end);
1.67 kristaps 695: free(p);
696: }
697:
698: /*
699: * Push a roff node onto the instruction stack. This must later be
700: * removed with roffnode_pop().
701: */
1.98 schwarze 702: static void
1.294 schwarze 703: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.106 kristaps 704: int line, int col)
1.67 kristaps 705: {
706: struct roffnode *p;
707:
1.98 schwarze 708: p = mandoc_calloc(1, sizeof(struct roffnode));
1.67 kristaps 709: p->tok = tok;
1.106 kristaps 710: if (name)
711: p->name = mandoc_strdup(name);
1.67 kristaps 712: p->parent = r->last;
713: p->line = line;
714: p->col = col;
1.198 schwarze 715: p->rule = p->parent ? p->parent->rule : 0;
1.67 kristaps 716:
717: r->last = p;
718: }
719:
1.266 schwarze 720: /* --- roff parser state data management ---------------------------------- */
721:
1.67 kristaps 722: static void
723: roff_free1(struct roff *r)
724: {
1.176 schwarze 725: struct tbl_node *tbl;
1.125 kristaps 726: struct eqn_node *e;
1.167 kristaps 727: int i;
1.67 kristaps 728:
1.176 schwarze 729: while (NULL != (tbl = r->first_tbl)) {
730: r->first_tbl = tbl->next;
731: tbl_free(tbl);
1.109 kristaps 732: }
1.113 kristaps 733: r->first_tbl = r->last_tbl = r->tbl = NULL;
734:
1.125 kristaps 735: while (NULL != (e = r->first_eqn)) {
736: r->first_eqn = e->next;
737: eqn_free(e);
738: }
739: r->first_eqn = r->last_eqn = r->eqn = NULL;
740:
1.67 kristaps 741: while (r->last)
742: roffnode_pop(r);
1.109 kristaps 743:
1.223 schwarze 744: free (r->rstack);
745: r->rstack = NULL;
746: r->rstacksz = 0;
747: r->rstackpos = -1;
748:
749: roff_freereg(r->regtab);
750: r->regtab = NULL;
751:
1.167 kristaps 752: roff_freestr(r->strtab);
1.306 schwarze 753: roff_freestr(r->rentab);
1.167 kristaps 754: roff_freestr(r->xmbtab);
1.306 schwarze 755: r->strtab = r->rentab = r->xmbtab = NULL;
1.167 kristaps 756:
757: if (r->xtab)
758: for (i = 0; i < 128; i++)
759: free(r->xtab[i].p);
760: free(r->xtab);
761: r->xtab = NULL;
1.67 kristaps 762: }
763:
764: void
765: roff_reset(struct roff *r)
766: {
767: roff_free1(r);
1.227 schwarze 768: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.303 schwarze 769: r->control = '\0';
770: r->escape = '\\';
1.307 schwarze 771: roffce_lines = 0;
772: roffce_node = NULL;
773: roffit_lines = 0;
774: roffit_macro = NULL;
1.67 kristaps 775: }
776:
777: void
778: roff_free(struct roff *r)
779: {
780: roff_free1(r);
1.295 schwarze 781: roffhash_free(r->reqtab);
1.67 kristaps 782: free(r);
783: }
784:
785: struct roff *
1.279 schwarze 786: roff_alloc(struct mparse *parse, int options)
1.67 kristaps 787: {
788: struct roff *r;
789:
1.98 schwarze 790: r = mandoc_calloc(1, sizeof(struct roff));
1.128 kristaps 791: r->parse = parse;
1.295 schwarze 792: r->reqtab = roffhash_alloc(0, ROFF_USERDEF);
1.199 schwarze 793: r->options = options;
1.227 schwarze 794: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.82 kristaps 795: r->rstackpos = -1;
1.303 schwarze 796: r->escape = '\\';
1.277 schwarze 797: return r;
1.265 schwarze 798: }
799:
1.266 schwarze 800: /* --- syntax tree state data management ---------------------------------- */
801:
1.265 schwarze 802: static void
803: roff_man_free1(struct roff_man *man)
804: {
805:
1.266 schwarze 806: if (man->first != NULL)
807: roff_node_delete(man, man->first);
1.265 schwarze 808: free(man->meta.msec);
809: free(man->meta.vol);
810: free(man->meta.os);
811: free(man->meta.arch);
812: free(man->meta.title);
813: free(man->meta.name);
814: free(man->meta.date);
815: }
816:
817: static void
818: roff_man_alloc1(struct roff_man *man)
819: {
820:
821: memset(&man->meta, 0, sizeof(man->meta));
822: man->first = mandoc_calloc(1, sizeof(*man->first));
823: man->first->type = ROFFT_ROOT;
824: man->last = man->first;
825: man->last_es = NULL;
826: man->flags = 0;
827: man->macroset = MACROSET_NONE;
828: man->lastsec = man->lastnamed = SEC_NONE;
829: man->next = ROFF_NEXT_CHILD;
830: }
831:
832: void
833: roff_man_reset(struct roff_man *man)
834: {
835:
836: roff_man_free1(man);
837: roff_man_alloc1(man);
838: }
839:
840: void
841: roff_man_free(struct roff_man *man)
842: {
843:
844: roff_man_free1(man);
845: free(man);
846: }
847:
848: struct roff_man *
849: roff_man_alloc(struct roff *roff, struct mparse *parse,
850: const char *defos, int quick)
851: {
852: struct roff_man *man;
853:
854: man = mandoc_calloc(1, sizeof(*man));
855: man->parse = parse;
856: man->roff = roff;
857: man->defos = defos;
858: man->quick = quick;
859: roff_man_alloc1(man);
1.296 schwarze 860: roff->man = man;
1.277 schwarze 861: return man;
1.67 kristaps 862: }
863:
1.266 schwarze 864: /* --- syntax tree handling ----------------------------------------------- */
865:
866: struct roff_node *
867: roff_node_alloc(struct roff_man *man, int line, int pos,
868: enum roff_type type, int tok)
869: {
870: struct roff_node *n;
871:
872: n = mandoc_calloc(1, sizeof(*n));
873: n->line = line;
874: n->pos = pos;
875: n->tok = tok;
876: n->type = type;
877: n->sec = man->lastsec;
878:
879: if (man->flags & MDOC_SYNOPSIS)
1.285 schwarze 880: n->flags |= NODE_SYNPRETTY;
1.266 schwarze 881: else
1.285 schwarze 882: n->flags &= ~NODE_SYNPRETTY;
1.266 schwarze 883: if (man->flags & MDOC_NEWLINE)
1.285 schwarze 884: n->flags |= NODE_LINE;
1.266 schwarze 885: man->flags &= ~MDOC_NEWLINE;
886:
1.277 schwarze 887: return n;
1.266 schwarze 888: }
889:
890: void
891: roff_node_append(struct roff_man *man, struct roff_node *n)
892: {
893:
894: switch (man->next) {
895: case ROFF_NEXT_SIBLING:
1.281 schwarze 896: if (man->last->next != NULL) {
897: n->next = man->last->next;
898: man->last->next->prev = n;
899: } else
900: man->last->parent->last = n;
1.266 schwarze 901: man->last->next = n;
902: n->prev = man->last;
903: n->parent = man->last->parent;
904: break;
905: case ROFF_NEXT_CHILD:
1.287 schwarze 906: if (man->last->child != NULL) {
907: n->next = man->last->child;
908: man->last->child->prev = n;
909: } else
910: man->last->last = n;
1.266 schwarze 911: man->last->child = n;
912: n->parent = man->last;
913: break;
914: default:
915: abort();
916: }
1.282 schwarze 917: man->last = n;
1.266 schwarze 918:
919: switch (n->type) {
920: case ROFFT_HEAD:
921: n->parent->head = n;
922: break;
923: case ROFFT_BODY:
1.282 schwarze 924: if (n->end != ENDBODY_NOT)
925: return;
1.266 schwarze 926: n->parent->body = n;
927: break;
928: case ROFFT_TAIL:
929: n->parent->tail = n;
930: break;
931: default:
1.282 schwarze 932: return;
1.266 schwarze 933: }
1.282 schwarze 934:
935: /*
936: * Copy over the normalised-data pointer of our parent. Not
937: * everybody has one, but copying a null pointer is fine.
938: */
939:
940: n->norm = n->parent->norm;
941: assert(n->parent->type == ROFFT_BLOCK);
1.266 schwarze 942: }
943:
1.267 schwarze 944: void
945: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
946: {
947: struct roff_node *n;
948:
949: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
950: n->string = roff_strdup(man->roff, word);
951: roff_node_append(man, n);
1.286 schwarze 952: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 953: man->next = ROFF_NEXT_SIBLING;
954: }
955:
956: void
957: roff_word_append(struct roff_man *man, const char *word)
958: {
959: struct roff_node *n;
960: char *addstr, *newstr;
961:
962: n = man->last;
963: addstr = roff_strdup(man->roff, word);
964: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
965: free(addstr);
966: free(n->string);
967: n->string = newstr;
968: man->next = ROFF_NEXT_SIBLING;
1.268 schwarze 969: }
970:
971: void
972: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
973: {
974: struct roff_node *n;
975:
976: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
977: roff_node_append(man, n);
978: man->next = ROFF_NEXT_CHILD;
979: }
980:
981: struct roff_node *
982: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
983: {
984: struct roff_node *n;
985:
986: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
987: roff_node_append(man, n);
988: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 989: return n;
1.267 schwarze 990: }
991:
1.266 schwarze 992: struct roff_node *
993: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
994: {
995: struct roff_node *n;
996:
997: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
998: roff_node_append(man, n);
999: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1000: return n;
1.266 schwarze 1001: }
1002:
1003: struct roff_node *
1004: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
1005: {
1006: struct roff_node *n;
1007:
1008: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
1009: roff_node_append(man, n);
1010: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 1011: return n;
1.267 schwarze 1012: }
1013:
1014: void
1015: roff_addeqn(struct roff_man *man, const struct eqn *eqn)
1016: {
1017: struct roff_node *n;
1018:
1019: n = roff_node_alloc(man, eqn->ln, eqn->pos, ROFFT_EQN, TOKEN_NONE);
1020: n->eqn = eqn;
1021: if (eqn->ln > man->last->line)
1.285 schwarze 1022: n->flags |= NODE_LINE;
1.267 schwarze 1023: roff_node_append(man, n);
1024: man->next = ROFF_NEXT_SIBLING;
1025: }
1026:
1027: void
1028: roff_addtbl(struct roff_man *man, const struct tbl_span *tbl)
1029: {
1030: struct roff_node *n;
1031:
1032: if (man->macroset == MACROSET_MAN)
1.302 schwarze 1033: man_breakscope(man, ROFF_TS);
1.267 schwarze 1034: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
1035: n->span = tbl;
1036: roff_node_append(man, n);
1.286 schwarze 1037: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 1038: man->next = ROFF_NEXT_SIBLING;
1.266 schwarze 1039: }
1040:
1041: void
1042: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1043: {
1044:
1045: /* Adjust siblings. */
1046:
1047: if (n->prev)
1048: n->prev->next = n->next;
1049: if (n->next)
1050: n->next->prev = n->prev;
1051:
1052: /* Adjust parent. */
1053:
1054: if (n->parent != NULL) {
1055: if (n->parent->child == n)
1056: n->parent->child = n->next;
1057: if (n->parent->last == n)
1058: n->parent->last = n->prev;
1059: }
1060:
1061: /* Adjust parse point. */
1062:
1063: if (man == NULL)
1064: return;
1065: if (man->last == n) {
1066: if (n->prev == NULL) {
1067: man->last = n->parent;
1068: man->next = ROFF_NEXT_CHILD;
1069: } else {
1070: man->last = n->prev;
1071: man->next = ROFF_NEXT_SIBLING;
1072: }
1073: }
1074: if (man->first == n)
1075: man->first = NULL;
1076: }
1077:
1078: void
1079: roff_node_free(struct roff_node *n)
1080: {
1081:
1082: if (n->args != NULL)
1083: mdoc_argv_free(n->args);
1084: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1085: free(n->norm);
1086: free(n->string);
1087: free(n);
1088: }
1089:
1090: void
1091: roff_node_delete(struct roff_man *man, struct roff_node *n)
1092: {
1093:
1094: while (n->child != NULL)
1095: roff_node_delete(man, n->child);
1096: roff_node_unlink(man, n);
1097: roff_node_free(n);
1.269 schwarze 1098: }
1099:
1100: void
1101: deroff(char **dest, const struct roff_node *n)
1102: {
1103: char *cp;
1104: size_t sz;
1105:
1106: if (n->type != ROFFT_TEXT) {
1107: for (n = n->child; n != NULL; n = n->next)
1108: deroff(dest, n);
1109: return;
1110: }
1111:
1.288 schwarze 1112: /* Skip leading whitespace. */
1.269 schwarze 1113:
1.288 schwarze 1114: for (cp = n->string; *cp != '\0'; cp++) {
1.289 schwarze 1115: if (cp[0] == '\\' && cp[1] != '\0' &&
1116: strchr(" %&0^|~", cp[1]) != NULL)
1.269 schwarze 1117: cp++;
1.288 schwarze 1118: else if ( ! isspace((unsigned char)*cp))
1.269 schwarze 1119: break;
1120: }
1121:
1.289 schwarze 1122: /* Skip trailing backslash. */
1123:
1124: sz = strlen(cp);
1.290 schwarze 1125: if (sz > 0 && cp[sz - 1] == '\\')
1.289 schwarze 1126: sz--;
1127:
1.269 schwarze 1128: /* Skip trailing whitespace. */
1129:
1.289 schwarze 1130: for (; sz; sz--)
1.269 schwarze 1131: if ( ! isspace((unsigned char)cp[sz-1]))
1132: break;
1133:
1134: /* Skip empty strings. */
1135:
1136: if (sz == 0)
1137: return;
1138:
1139: if (*dest == NULL) {
1140: *dest = mandoc_strndup(cp, sz);
1141: return;
1142: }
1143:
1144: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1145: free(*dest);
1146: *dest = cp;
1.266 schwarze 1147: }
1148:
1149: /* --- main functions of the roff parser ---------------------------------- */
1150:
1.94 kristaps 1151: /*
1.206 schwarze 1152: * In the current line, expand escape sequences that tend to get
1153: * used in numerical expressions and conditional requests.
1154: * Also check the syntax of the remaining escape sequences.
1.154 kristaps 1155: */
1.172 schwarze 1156: static enum rofferr
1.238 schwarze 1157: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.94 kristaps 1158: {
1.208 schwarze 1159: char ubuf[24]; /* buffer to print the number */
1.205 schwarze 1160: const char *start; /* start of the string to process */
1.209 schwarze 1161: char *stesc; /* start of an escape sequence ('\\') */
1.108 schwarze 1162: const char *stnam; /* start of the name, after "[(*" */
1163: const char *cp; /* end of the name, e.g. before ']' */
1164: const char *res; /* the string to be substituted */
1.238 schwarze 1165: char *nbuf; /* new buffer to copy buf->buf to */
1.181 schwarze 1166: size_t maxl; /* expected length of the escape name */
1167: size_t naml; /* actual length of the escape name */
1.237 schwarze 1168: enum mandoc_esc esc; /* type of the escape sequence */
1169: int inaml; /* length returned from mandoc_escape() */
1.181 schwarze 1170: int expand_count; /* to avoid infinite loops */
1.206 schwarze 1171: int npos; /* position in numeric expression */
1.218 schwarze 1172: int arg_complete; /* argument not interrupted by eol */
1.303 schwarze 1173: int done; /* no more input available */
1.206 schwarze 1174: char term; /* character terminating the escape */
1.94 kristaps 1175:
1.303 schwarze 1176: /* Search forward for comments. */
1177:
1178: done = 0;
1179: start = buf->buf + pos;
1180: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1181: if (stesc[0] != r->escape || stesc[1] == '\0')
1182: continue;
1183: stesc++;
1184: if (*stesc != '"' && *stesc != '#')
1185: continue;
1186: cp = strchr(stesc--, '\0') - 1;
1187: if (*cp == '\n') {
1188: done = 1;
1189: cp--;
1190: }
1191: if (*cp == ' ' || *cp == '\t')
1192: mandoc_msg(MANDOCERR_SPACE_EOL, r->parse,
1193: ln, cp - buf->buf, NULL);
1194: while (stesc > start && stesc[-1] == ' ')
1195: stesc--;
1196: *stesc = '\0';
1197: break;
1198: }
1199: if (stesc == start)
1200: return ROFF_CONT;
1201: stesc--;
1202:
1203: /* Notice the end of the input. */
1204:
1205: if (*stesc == '\n') {
1206: *stesc-- = '\0';
1207: done = 1;
1208: }
1209:
1.170 schwarze 1210: expand_count = 0;
1.303 schwarze 1211: while (stesc >= start) {
1.170 schwarze 1212:
1.205 schwarze 1213: /* Search backwards for the next backslash. */
1214:
1.303 schwarze 1215: if (*stesc != r->escape) {
1216: if (*stesc == '\\') {
1217: *stesc = '\0';
1218: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1219: buf->buf, stesc + 1) + 1;
1220: start = nbuf + pos;
1221: stesc = nbuf + (stesc - buf->buf);
1222: free(buf->buf);
1223: buf->buf = nbuf;
1224: }
1225: stesc--;
1.205 schwarze 1226: continue;
1.303 schwarze 1227: }
1.205 schwarze 1228:
1229: /* If it is escaped, skip it. */
1230:
1231: for (cp = stesc - 1; cp >= start; cp--)
1.303 schwarze 1232: if (*cp != r->escape)
1.205 schwarze 1233: break;
1234:
1.238 schwarze 1235: if ((stesc - cp) % 2 == 0) {
1.303 schwarze 1236: while (stesc > cp)
1237: *stesc-- = '\\';
1.205 schwarze 1238: continue;
1.303 schwarze 1239: } else if (stesc[1] != '\0') {
1240: *stesc = '\\';
1241: } else {
1242: *stesc-- = '\0';
1243: if (done)
1244: continue;
1245: else
1246: return ROFF_APPEND;
1.205 schwarze 1247: }
1.108 schwarze 1248:
1.206 schwarze 1249: /* Decide whether to expand or to check only. */
1.108 schwarze 1250:
1.206 schwarze 1251: term = '\0';
1.205 schwarze 1252: cp = stesc + 1;
1.181 schwarze 1253: switch (*cp) {
1.207 schwarze 1254: case '*':
1.181 schwarze 1255: res = NULL;
1256: break;
1.207 schwarze 1257: case 'B':
1258: case 'w':
1.206 schwarze 1259: term = cp[1];
1260: /* FALLTHROUGH */
1.207 schwarze 1261: case 'n':
1.181 schwarze 1262: res = ubuf;
1263: break;
1264: default:
1.237 schwarze 1265: esc = mandoc_escape(&cp, &stnam, &inaml);
1266: if (esc == ESCAPE_ERROR ||
1267: (esc == ESCAPE_SPECIAL &&
1.279 schwarze 1268: mchars_spec2cp(stnam, inaml) < 0))
1.219 schwarze 1269: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.238 schwarze 1270: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1271: "%.*s", (int)(cp - stesc), stesc);
1.303 schwarze 1272: stesc--;
1.205 schwarze 1273: continue;
1.152 kristaps 1274: }
1275:
1.205 schwarze 1276: if (EXPAND_LIMIT < ++expand_count) {
1277: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.238 schwarze 1278: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1279: return ROFF_IGN;
1.205 schwarze 1280: }
1.108 schwarze 1281:
1282: /*
1283: * The third character decides the length
1.181 schwarze 1284: * of the name of the string or register.
1.108 schwarze 1285: * Save a pointer to the name.
1286: */
1287:
1.238 schwarze 1288: if (term == '\0') {
1.206 schwarze 1289: switch (*++cp) {
1.207 schwarze 1290: case '\0':
1.206 schwarze 1291: maxl = 0;
1292: break;
1.207 schwarze 1293: case '(':
1.206 schwarze 1294: cp++;
1295: maxl = 2;
1296: break;
1.207 schwarze 1297: case '[':
1.206 schwarze 1298: cp++;
1299: term = ']';
1300: maxl = 0;
1301: break;
1302: default:
1303: maxl = 1;
1304: break;
1305: }
1306: } else {
1307: cp += 2;
1.94 kristaps 1308: maxl = 0;
1309: }
1.108 schwarze 1310: stnam = cp;
1.94 kristaps 1311:
1.108 schwarze 1312: /* Advance to the end of the name. */
1.94 kristaps 1313:
1.253 schwarze 1314: naml = 0;
1.218 schwarze 1315: arg_complete = 1;
1.253 schwarze 1316: while (maxl == 0 || naml < maxl) {
1.238 schwarze 1317: if (*cp == '\0') {
1.219 schwarze 1318: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 1319: ln, (int)(stesc - buf->buf), stesc);
1.218 schwarze 1320: arg_complete = 0;
1.206 schwarze 1321: break;
1.153 kristaps 1322: }
1.238 schwarze 1323: if (maxl == 0 && *cp == term) {
1.206 schwarze 1324: cp++;
1.253 schwarze 1325: break;
1326: }
1327: if (*cp++ != '\\' || stesc[1] != 'w') {
1328: naml++;
1329: continue;
1330: }
1331: switch (mandoc_escape(&cp, NULL, NULL)) {
1332: case ESCAPE_SPECIAL:
1333: case ESCAPE_UNICODE:
1334: case ESCAPE_NUMBERED:
1335: case ESCAPE_OVERSTRIKE:
1336: naml++;
1337: break;
1338: default:
1.94 kristaps 1339: break;
1.206 schwarze 1340: }
1.94 kristaps 1341: }
1342:
1.108 schwarze 1343: /*
1344: * Retrieve the replacement string; if it is
1345: * undefined, resume searching for escapes.
1346: */
1347:
1.206 schwarze 1348: switch (stesc[1]) {
1.207 schwarze 1349: case '*':
1.218 schwarze 1350: if (arg_complete)
1351: res = roff_getstrn(r, stnam, naml);
1.206 schwarze 1352: break;
1.207 schwarze 1353: case 'B':
1.206 schwarze 1354: npos = 0;
1.218 schwarze 1355: ubuf[0] = arg_complete &&
1.261 schwarze 1356: roff_evalnum(r, ln, stnam, &npos,
1357: NULL, ROFFNUM_SCALE) &&
1.218 schwarze 1358: stnam + npos + 1 == cp ? '1' : '0';
1.206 schwarze 1359: ubuf[1] = '\0';
1360: break;
1.207 schwarze 1361: case 'n':
1.218 schwarze 1362: if (arg_complete)
1363: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1364: roff_getregn(r, stnam, naml));
1365: else
1366: ubuf[0] = '\0';
1.206 schwarze 1367: break;
1.207 schwarze 1368: case 'w':
1.218 schwarze 1369: /* use even incomplete args */
1.208 schwarze 1370: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.206 schwarze 1371: 24 * (int)naml);
1372: break;
1373: }
1.94 kristaps 1374:
1.238 schwarze 1375: if (res == NULL) {
1.219 schwarze 1376: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1377: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1378: "%.*s", (int)naml, stnam);
1.142 kristaps 1379: res = "";
1.246 schwarze 1380: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1381: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1382: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1383: return ROFF_IGN;
1.94 kristaps 1384: }
1385:
1.108 schwarze 1386: /* Replace the escape sequence by the string. */
1387:
1.209 schwarze 1388: *stesc = '\0';
1.238 schwarze 1389: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1390: buf->buf, res, cp) + 1;
1.94 kristaps 1391:
1.205 schwarze 1392: /* Prepare for the next replacement. */
1.94 kristaps 1393:
1.205 schwarze 1394: start = nbuf + pos;
1.238 schwarze 1395: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1396: free(buf->buf);
1397: buf->buf = nbuf;
1.154 kristaps 1398: }
1.277 schwarze 1399: return ROFF_CONT;
1.154 kristaps 1400: }
1401:
1402: /*
1.275 schwarze 1403: * Process text streams.
1.154 kristaps 1404: */
1405: static enum rofferr
1.305 schwarze 1406: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.154 kristaps 1407: {
1408: size_t sz;
1409: const char *start;
1.178 schwarze 1410: char *p;
1411: int isz;
1.154 kristaps 1412: enum mandoc_esc esc;
1413:
1.275 schwarze 1414: /* Spring the input line trap. */
1415:
1416: if (roffit_lines == 1) {
1417: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1418: free(buf->buf);
1419: buf->buf = p;
1420: buf->sz = isz + 1;
1421: *offs = 0;
1422: free(roffit_macro);
1423: roffit_lines = 0;
1.277 schwarze 1424: return ROFF_REPARSE;
1.275 schwarze 1425: } else if (roffit_lines > 1)
1426: --roffit_lines;
1427:
1.305 schwarze 1428: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1429: if (roffce_lines < 1) {
1430: r->man->last = roffce_node;
1431: r->man->next = ROFF_NEXT_SIBLING;
1432: roffce_lines = 0;
1433: roffce_node = NULL;
1434: } else
1435: roffce_lines--;
1436: }
1437:
1.275 schwarze 1438: /* Convert all breakable hyphens into ASCII_HYPH. */
1439:
1.238 schwarze 1440: start = p = buf->buf + pos;
1.154 kristaps 1441:
1.238 schwarze 1442: while (*p != '\0') {
1.154 kristaps 1443: sz = strcspn(p, "-\\");
1444: p += sz;
1445:
1.238 schwarze 1446: if (*p == '\0')
1.159 kristaps 1447: break;
1448:
1.238 schwarze 1449: if (*p == '\\') {
1.154 kristaps 1450: /* Skip over escapes. */
1451: p++;
1.189 schwarze 1452: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.238 schwarze 1453: if (esc == ESCAPE_ERROR)
1.154 kristaps 1454: break;
1.264 schwarze 1455: while (*p == '-')
1456: p++;
1.155 kristaps 1457: continue;
1.159 kristaps 1458: } else if (p == start) {
1.158 kristaps 1459: p++;
1.155 kristaps 1460: continue;
1.158 kristaps 1461: }
1.155 kristaps 1462:
1.171 schwarze 1463: if (isalpha((unsigned char)p[-1]) &&
1464: isalpha((unsigned char)p[1]))
1.155 kristaps 1465: *p = ASCII_HYPH;
1466: p++;
1.94 kristaps 1467: }
1.277 schwarze 1468: return ROFF_CONT;
1.94 kristaps 1469: }
1470:
1.67 kristaps 1471: enum rofferr
1.238 schwarze 1472: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.67 kristaps 1473: {
1.294 schwarze 1474: enum roff_tok t;
1.109 kristaps 1475: enum rofferr e;
1.238 schwarze 1476: int pos; /* parse point */
1.243 schwarze 1477: int spos; /* saved parse point for messages */
1.238 schwarze 1478: int ppos; /* original offset in buf->buf */
1479: int ctl; /* macro line (boolean) */
1480:
1481: ppos = pos = *offs;
1.79 kristaps 1482:
1.230 schwarze 1483: /* Handle in-line equation delimiters. */
1484:
1.236 schwarze 1485: if (r->tbl == NULL &&
1486: r->last_eqn != NULL && r->last_eqn->delim &&
1.230 schwarze 1487: (r->eqn == NULL || r->eqn_inline)) {
1.238 schwarze 1488: e = roff_eqndelim(r, buf, pos);
1.230 schwarze 1489: if (e == ROFF_REPARSE)
1.277 schwarze 1490: return e;
1.230 schwarze 1491: assert(e == ROFF_CONT);
1492: }
1493:
1494: /* Expand some escape sequences. */
1.94 kristaps 1495:
1.238 schwarze 1496: e = roff_res(r, buf, ln, pos);
1.303 schwarze 1497: if (e == ROFF_IGN || e == ROFF_APPEND)
1.277 schwarze 1498: return e;
1.238 schwarze 1499: assert(e == ROFF_CONT);
1.94 kristaps 1500:
1.238 schwarze 1501: ctl = roff_getcontrol(r, buf->buf, &pos);
1.130 kristaps 1502:
1.94 kristaps 1503: /*
1.79 kristaps 1504: * First, if a scope is open and we're not a macro, pass the
1.252 schwarze 1505: * text through the macro's filter.
1506: * Equations process all content themselves.
1507: * Tables process almost all content themselves, but we want
1508: * to warn about macros before passing it there.
1.79 kristaps 1509: */
1.74 kristaps 1510:
1.252 schwarze 1511: if (r->last != NULL && ! ctl) {
1.78 kristaps 1512: t = r->last->tok;
1.238 schwarze 1513: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.294 schwarze 1514: if (e == ROFF_IGN)
1.277 schwarze 1515: return e;
1.294 schwarze 1516: assert(e == ROFF_CONT);
1.182 schwarze 1517: }
1.252 schwarze 1518: if (r->eqn != NULL)
1.277 schwarze 1519: return eqn_read(&r->eqn, ln, buf->buf, ppos, offs);
1.252 schwarze 1520: if (r->tbl != NULL && ( ! ctl || buf->buf[pos] == '\0'))
1.277 schwarze 1521: return tbl_read(r->tbl, ln, buf->buf, ppos);
1.252 schwarze 1522: if ( ! ctl)
1.305 schwarze 1523: return roff_parsetext(r, buf, pos, offs);
1.228 schwarze 1524:
1525: /* Skip empty request lines. */
1526:
1.238 schwarze 1527: if (buf->buf[pos] == '"') {
1.228 schwarze 1528: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1529: ln, pos, NULL);
1.277 schwarze 1530: return ROFF_IGN;
1.238 schwarze 1531: } else if (buf->buf[pos] == '\0')
1.277 schwarze 1532: return ROFF_IGN;
1.67 kristaps 1533:
1.79 kristaps 1534: /*
1535: * If a scope is open, go to the child handler for that macro,
1536: * as it may want to preprocess before doing anything with it.
1.125 kristaps 1537: * Don't do so if an equation is open.
1.79 kristaps 1538: */
1.78 kristaps 1539:
1.79 kristaps 1540: if (r->last) {
1541: t = r->last->tok;
1.277 schwarze 1542: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1543: }
1.78 kristaps 1544:
1.243 schwarze 1545: /* No scope is open. This is a new request or macro. */
1546:
1547: spos = pos;
1548: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1549:
1550: /* Tables ignore most macros. */
1551:
1.308 schwarze 1552: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.309 schwarze 1553: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.243 schwarze 1554: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1555: ln, pos, buf->buf + spos);
1.308 schwarze 1556: if (t != TOKEN_NONE)
1.277 schwarze 1557: return ROFF_IGN;
1.257 schwarze 1558: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1559: pos++;
1.291 schwarze 1560: while (buf->buf[pos] == ' ')
1.257 schwarze 1561: pos++;
1.277 schwarze 1562: return tbl_read(r->tbl, ln, buf->buf, pos);
1.243 schwarze 1563: }
1564:
1.305 schwarze 1565: /* For now, let high level macros abort .ce mode. */
1566:
1567: if (ctl && roffce_node != NULL &&
1568: (t == TOKEN_NONE || t == ROFF_EQ || t == ROFF_TS)) {
1569: r->man->last = roffce_node;
1570: r->man->next = ROFF_NEXT_SIBLING;
1571: roffce_lines = 0;
1572: roffce_node = NULL;
1573: }
1574:
1.79 kristaps 1575: /*
1.243 schwarze 1576: * This is neither a roff request nor a user-defined macro.
1577: * Let the standard macro set parsers handle it.
1.79 kristaps 1578: */
1.67 kristaps 1579:
1.294 schwarze 1580: if (t == TOKEN_NONE)
1.277 schwarze 1581: return ROFF_CONT;
1.243 schwarze 1582:
1583: /* Execute a roff request or a user defined macro. */
1.67 kristaps 1584:
1.296 schwarze 1585: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.74 kristaps 1586: }
1587:
1.117 kristaps 1588: void
1.74 kristaps 1589: roff_endparse(struct roff *r)
1590: {
1591:
1.110 kristaps 1592: if (r->last)
1.221 schwarze 1593: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1594: r->last->line, r->last->col,
1.295 schwarze 1595: roff_name[r->last->tok]);
1.117 kristaps 1596:
1.125 kristaps 1597: if (r->eqn) {
1.221 schwarze 1598: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1599: r->eqn->eqn.ln, r->eqn->eqn.pos, "EQ");
1.151 kristaps 1600: eqn_end(&r->eqn);
1.125 kristaps 1601: }
1602:
1.117 kristaps 1603: if (r->tbl) {
1.221 schwarze 1604: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1605: r->tbl->line, r->tbl->pos, "TS");
1.151 kristaps 1606: tbl_end(&r->tbl);
1.117 kristaps 1607: }
1.67 kristaps 1608: }
1609:
1610: /*
1611: * Parse a roff node's type from the input buffer. This must be in the
1612: * form of ".foo xxx" in the usual way.
1613: */
1.294 schwarze 1614: static enum roff_tok
1.214 schwarze 1615: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.67 kristaps 1616: {
1.214 schwarze 1617: char *cp;
1.106 kristaps 1618: const char *mac;
1619: size_t maclen;
1.294 schwarze 1620: enum roff_tok t;
1.67 kristaps 1621:
1.214 schwarze 1622: cp = buf + *pos;
1623:
1624: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.294 schwarze 1625: return TOKEN_NONE;
1.67 kristaps 1626:
1.214 schwarze 1627: mac = cp;
1628: maclen = roff_getname(r, &cp, ln, ppos);
1.67 kristaps 1629:
1.306 schwarze 1630: t = (r->current_string = roff_getstrn(r, mac, maclen)) ?
1631: ROFF_USERDEF :
1632: (r->current_string = roff_getrenn(r, mac, maclen)) ?
1633: ROFF_RENAMED : roffhash_find(r->reqtab, mac, maclen);
1.67 kristaps 1634:
1.294 schwarze 1635: if (t != TOKEN_NONE)
1.214 schwarze 1636: *pos = cp - buf;
1.67 kristaps 1637:
1.277 schwarze 1638: return t;
1.67 kristaps 1639: }
1640:
1.266 schwarze 1641: /* --- handling of request blocks ----------------------------------------- */
1642:
1.67 kristaps 1643: static enum rofferr
1.76 kristaps 1644: roff_cblock(ROFF_ARGS)
1.67 kristaps 1645: {
1646:
1.79 kristaps 1647: /*
1648: * A block-close `..' should only be invoked as a child of an
1649: * ignore macro, otherwise raise a warning and just ignore it.
1650: */
1651:
1.238 schwarze 1652: if (r->last == NULL) {
1.221 schwarze 1653: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1654: ln, ppos, "..");
1.277 schwarze 1655: return ROFF_IGN;
1.76 kristaps 1656: }
1.67 kristaps 1657:
1.81 kristaps 1658: switch (r->last->tok) {
1.207 schwarze 1659: case ROFF_am:
1.220 schwarze 1660: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.207 schwarze 1661: case ROFF_ami:
1662: case ROFF_de:
1.108 schwarze 1663: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.207 schwarze 1664: case ROFF_dei:
1665: case ROFF_ig:
1.81 kristaps 1666: break;
1667: default:
1.221 schwarze 1668: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1669: ln, ppos, "..");
1.277 schwarze 1670: return ROFF_IGN;
1.76 kristaps 1671: }
1.67 kristaps 1672:
1.238 schwarze 1673: if (buf->buf[pos] != '\0')
1.217 schwarze 1674: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 1675: ".. %s", buf->buf + pos);
1.71 kristaps 1676:
1677: roffnode_pop(r);
1.76 kristaps 1678: roffnode_cleanscope(r);
1.277 schwarze 1679: return ROFF_IGN;
1.71 kristaps 1680:
1.67 kristaps 1681: }
1682:
1.76 kristaps 1683: static void
1684: roffnode_cleanscope(struct roff *r)
1.67 kristaps 1685: {
1686:
1.76 kristaps 1687: while (r->last) {
1.173 schwarze 1688: if (--r->last->endspan != 0)
1.76 kristaps 1689: break;
1690: roffnode_pop(r);
1691: }
1.67 kristaps 1692: }
1693:
1.195 schwarze 1694: static void
1695: roff_ccond(struct roff *r, int ln, int ppos)
1.74 kristaps 1696: {
1697:
1.76 kristaps 1698: if (NULL == r->last) {
1.221 schwarze 1699: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1700: ln, ppos, "\\}");
1.195 schwarze 1701: return;
1.76 kristaps 1702: }
1703:
1.82 kristaps 1704: switch (r->last->tok) {
1.207 schwarze 1705: case ROFF_el:
1706: case ROFF_ie:
1707: case ROFF_if:
1.82 kristaps 1708: break;
1709: default:
1.221 schwarze 1710: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1711: ln, ppos, "\\}");
1.195 schwarze 1712: return;
1.75 kristaps 1713: }
1714:
1.76 kristaps 1715: if (r->last->endspan > -1) {
1.221 schwarze 1716: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1717: ln, ppos, "\\}");
1.195 schwarze 1718: return;
1.76 kristaps 1719: }
1720:
1.75 kristaps 1721: roffnode_pop(r);
1.76 kristaps 1722: roffnode_cleanscope(r);
1.195 schwarze 1723: return;
1.76 kristaps 1724: }
1725:
1726: static enum rofferr
1.80 kristaps 1727: roff_block(ROFF_ARGS)
1.76 kristaps 1728: {
1.220 schwarze 1729: const char *name;
1730: char *iname, *cp;
1.213 schwarze 1731: size_t namesz;
1.106 kristaps 1732:
1.220 schwarze 1733: /* Ignore groff compatibility mode for now. */
1.76 kristaps 1734:
1.238 schwarze 1735: if (tok == ROFF_de1)
1.220 schwarze 1736: tok = ROFF_de;
1.251 schwarze 1737: else if (tok == ROFF_dei1)
1738: tok = ROFF_dei;
1.238 schwarze 1739: else if (tok == ROFF_am1)
1.220 schwarze 1740: tok = ROFF_am;
1.251 schwarze 1741: else if (tok == ROFF_ami1)
1742: tok = ROFF_ami;
1.220 schwarze 1743:
1744: /* Parse the macro name argument. */
1745:
1.238 schwarze 1746: cp = buf->buf + pos;
1747: if (tok == ROFF_ig) {
1.220 schwarze 1748: iname = NULL;
1749: namesz = 0;
1750: } else {
1751: iname = cp;
1752: namesz = roff_getname(r, &cp, ln, ppos);
1753: iname[namesz] = '\0';
1754: }
1.107 kristaps 1755:
1.220 schwarze 1756: /* Resolve the macro name argument if it is indirect. */
1.107 kristaps 1757:
1.238 schwarze 1758: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1759: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.220 schwarze 1760: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1761: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1762: "%.*s", (int)namesz, iname);
1763: namesz = 0;
1764: } else
1765: namesz = strlen(name);
1766: } else
1767: name = iname;
1.107 kristaps 1768:
1.238 schwarze 1769: if (namesz == 0 && tok != ROFF_ig) {
1.220 schwarze 1770: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1.295 schwarze 1771: ln, ppos, roff_name[tok]);
1.277 schwarze 1772: return ROFF_IGN;
1.220 schwarze 1773: }
1.80 kristaps 1774:
1.106 kristaps 1775: roffnode_push(r, tok, name, ln, ppos);
1776:
1777: /*
1778: * At the beginning of a `de' macro, clear the existing string
1779: * with the same name, if there is one. New content will be
1.193 schwarze 1780: * appended from roff_block_text() in multiline mode.
1.106 kristaps 1781: */
1.107 kristaps 1782:
1.311 schwarze 1783: if (tok == ROFF_de || tok == ROFF_dei) {
1.213 schwarze 1784: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.311 schwarze 1785: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1786: }
1.76 kristaps 1787:
1.238 schwarze 1788: if (*cp == '\0')
1.277 schwarze 1789: return ROFF_IGN;
1.78 kristaps 1790:
1.220 schwarze 1791: /* Get the custom end marker. */
1.107 kristaps 1792:
1.220 schwarze 1793: iname = cp;
1.213 schwarze 1794: namesz = roff_getname(r, &cp, ln, ppos);
1.220 schwarze 1795:
1796: /* Resolve the end marker if it is indirect. */
1797:
1.238 schwarze 1798: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1799: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.220 schwarze 1800: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1801: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1802: "%.*s", (int)namesz, iname);
1803: namesz = 0;
1804: } else
1805: namesz = strlen(name);
1806: } else
1807: name = iname;
1808:
1.213 schwarze 1809: if (namesz)
1810: r->last->end = mandoc_strndup(name, namesz);
1.78 kristaps 1811:
1.238 schwarze 1812: if (*cp != '\0')
1.217 schwarze 1813: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1.295 schwarze 1814: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.74 kristaps 1815:
1.277 schwarze 1816: return ROFF_IGN;
1.78 kristaps 1817: }
1818:
1819: static enum rofferr
1.80 kristaps 1820: roff_block_sub(ROFF_ARGS)
1.79 kristaps 1821: {
1.294 schwarze 1822: enum roff_tok t;
1.79 kristaps 1823: int i, j;
1824:
1825: /*
1826: * First check whether a custom macro exists at this level. If
1827: * it does, then check against it. This is some of groff's
1828: * stranger behaviours. If we encountered a custom end-scope
1829: * tag and that tag also happens to be a "real" macro, then we
1830: * need to try interpreting it again as a real macro. If it's
1831: * not, then return ignore. Else continue.
1832: */
1833:
1834: if (r->last->end) {
1.130 kristaps 1835: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.238 schwarze 1836: if (buf->buf[i] != r->last->end[j])
1.79 kristaps 1837: break;
1838:
1.238 schwarze 1839: if (r->last->end[j] == '\0' &&
1840: (buf->buf[i] == '\0' ||
1841: buf->buf[i] == ' ' ||
1842: buf->buf[i] == '\t')) {
1.79 kristaps 1843: roffnode_pop(r);
1844: roffnode_cleanscope(r);
1845:
1.238 schwarze 1846: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.130 kristaps 1847: i++;
1848:
1849: pos = i;
1.238 schwarze 1850: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.294 schwarze 1851: TOKEN_NONE)
1.277 schwarze 1852: return ROFF_RERUN;
1853: return ROFF_IGN;
1.79 kristaps 1854: }
1855: }
1856:
1857: /*
1858: * If we have no custom end-query or lookup failed, then try
1859: * pulling it out of the hashtable.
1860: */
1861:
1.238 schwarze 1862: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.79 kristaps 1863:
1.238 schwarze 1864: if (t != ROFF_cblock) {
1865: if (tok != ROFF_ig)
1866: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.277 schwarze 1867: return ROFF_IGN;
1.106 kristaps 1868: }
1.79 kristaps 1869:
1.277 schwarze 1870: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1871: }
1872:
1873: static enum rofferr
1.80 kristaps 1874: roff_block_text(ROFF_ARGS)
1.78 kristaps 1875: {
1876:
1.238 schwarze 1877: if (tok != ROFF_ig)
1878: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.106 kristaps 1879:
1.277 schwarze 1880: return ROFF_IGN;
1.78 kristaps 1881: }
1882:
1883: static enum rofferr
1.82 kristaps 1884: roff_cond_sub(ROFF_ARGS)
1885: {
1.294 schwarze 1886: enum roff_tok t;
1.139 kristaps 1887: char *ep;
1.198 schwarze 1888: int rr;
1.82 kristaps 1889:
1890: rr = r->last->rule;
1.139 kristaps 1891: roffnode_cleanscope(r);
1.238 schwarze 1892: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.82 kristaps 1893:
1.139 kristaps 1894: /*
1.177 schwarze 1895: * Fully handle known macros when they are structurally
1896: * required or when the conditional evaluated to true.
1.87 kristaps 1897: */
1898:
1.294 schwarze 1899: if (t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT))
1.277 schwarze 1900: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.144 kristaps 1901:
1.196 schwarze 1902: /*
1903: * If `\}' occurs on a macro line without a preceding macro,
1904: * drop the line completely.
1905: */
1906:
1.238 schwarze 1907: ep = buf->buf + pos;
1908: if (ep[0] == '\\' && ep[1] == '}')
1.198 schwarze 1909: rr = 0;
1.196 schwarze 1910:
1.177 schwarze 1911: /* Always check for the closing delimiter `\}'. */
1.144 kristaps 1912:
1.238 schwarze 1913: while ((ep = strchr(ep, '\\')) != NULL) {
1914: if (*(++ep) == '}') {
1.197 schwarze 1915: *ep = '&';
1.238 schwarze 1916: roff_ccond(r, ln, ep - buf->buf - 1);
1.197 schwarze 1917: }
1.247 schwarze 1918: if (*ep != '\0')
1919: ++ep;
1.177 schwarze 1920: }
1.277 schwarze 1921: return rr ? ROFF_CONT : ROFF_IGN;
1.82 kristaps 1922: }
1923:
1924: static enum rofferr
1925: roff_cond_text(ROFF_ARGS)
1.78 kristaps 1926: {
1.140 kristaps 1927: char *ep;
1.198 schwarze 1928: int rr;
1.82 kristaps 1929:
1930: rr = r->last->rule;
1.140 kristaps 1931: roffnode_cleanscope(r);
1.82 kristaps 1932:
1.238 schwarze 1933: ep = buf->buf + pos;
1934: while ((ep = strchr(ep, '\\')) != NULL) {
1935: if (*(++ep) == '}') {
1.197 schwarze 1936: *ep = '&';
1.238 schwarze 1937: roff_ccond(r, ln, ep - buf->buf - 1);
1.197 schwarze 1938: }
1.247 schwarze 1939: if (*ep != '\0')
1940: ++ep;
1.78 kristaps 1941: }
1.277 schwarze 1942: return rr ? ROFF_CONT : ROFF_IGN;
1.74 kristaps 1943: }
1944:
1.266 schwarze 1945: /* --- handling of numeric and conditional expressions -------------------- */
1946:
1.204 schwarze 1947: /*
1948: * Parse a single signed integer number. Stop at the first non-digit.
1949: * If there is at least one digit, return success and advance the
1950: * parse point, else return failure and let the parse point unchanged.
1951: * Ignore overflows, treat them just like the C language.
1952: */
1.184 schwarze 1953: static int
1.261 schwarze 1954: roff_getnum(const char *v, int *pos, int *res, int flags)
1.184 schwarze 1955: {
1.261 schwarze 1956: int myres, scaled, n, p;
1.206 schwarze 1957:
1958: if (NULL == res)
1959: res = &myres;
1.184 schwarze 1960:
1961: p = *pos;
1962: n = v[p] == '-';
1.261 schwarze 1963: if (n || v[p] == '+')
1.184 schwarze 1964: p++;
1965:
1.261 schwarze 1966: if (flags & ROFFNUM_WHITE)
1967: while (isspace((unsigned char)v[p]))
1968: p++;
1969:
1.184 schwarze 1970: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.204 schwarze 1971: *res = 10 * *res + v[p] - '0';
1.184 schwarze 1972: if (p == *pos + n)
1973: return 0;
1974:
1975: if (n)
1976: *res = -*res;
1977:
1.254 schwarze 1978: /* Each number may be followed by one optional scaling unit. */
1979:
1980: switch (v[p]) {
1981: case 'f':
1.261 schwarze 1982: scaled = *res * 65536;
1.254 schwarze 1983: break;
1984: case 'i':
1.261 schwarze 1985: scaled = *res * 240;
1.254 schwarze 1986: break;
1987: case 'c':
1.261 schwarze 1988: scaled = *res * 240 / 2.54;
1.254 schwarze 1989: break;
1990: case 'v':
1991: case 'P':
1.261 schwarze 1992: scaled = *res * 40;
1.254 schwarze 1993: break;
1994: case 'm':
1995: case 'n':
1.261 schwarze 1996: scaled = *res * 24;
1.254 schwarze 1997: break;
1998: case 'p':
1.261 schwarze 1999: scaled = *res * 10 / 3;
1.254 schwarze 2000: break;
2001: case 'u':
1.261 schwarze 2002: scaled = *res;
1.254 schwarze 2003: break;
2004: case 'M':
1.261 schwarze 2005: scaled = *res * 6 / 25;
1.254 schwarze 2006: break;
2007: default:
1.261 schwarze 2008: scaled = *res;
1.254 schwarze 2009: p--;
2010: break;
2011: }
1.261 schwarze 2012: if (flags & ROFFNUM_SCALE)
2013: *res = scaled;
1.254 schwarze 2014:
2015: *pos = p + 1;
1.277 schwarze 2016: return 1;
1.184 schwarze 2017: }
2018:
1.198 schwarze 2019: /*
2020: * Evaluate a string comparison condition.
2021: * The first character is the delimiter.
2022: * Succeed if the string up to its second occurrence
2023: * matches the string up to its third occurence.
2024: * Advance the cursor after the third occurrence
2025: * or lacking that, to the end of the line.
2026: */
2027: static int
2028: roff_evalstrcond(const char *v, int *pos)
2029: {
2030: const char *s1, *s2, *s3;
2031: int match;
2032:
2033: match = 0;
2034: s1 = v + *pos; /* initial delimiter */
2035: s2 = s1 + 1; /* for scanning the first string */
2036: s3 = strchr(s2, *s1); /* for scanning the second string */
2037:
2038: if (NULL == s3) /* found no middle delimiter */
2039: goto out;
2040:
2041: while ('\0' != *++s3) {
2042: if (*s2 != *s3) { /* mismatch */
2043: s3 = strchr(s3, *s1);
2044: break;
2045: }
2046: if (*s3 == *s1) { /* found the final delimiter */
2047: match = 1;
2048: break;
2049: }
2050: s2++;
2051: }
2052:
2053: out:
2054: if (NULL == s3)
2055: s3 = strchr(s2, '\0');
1.242 schwarze 2056: else if (*s3 != '\0')
1.198 schwarze 2057: s3++;
2058: *pos = s3 - v;
1.277 schwarze 2059: return match;
1.198 schwarze 2060: }
2061:
1.204 schwarze 2062: /*
2063: * Evaluate an optionally negated single character, numerical,
2064: * or string condition.
2065: */
1.198 schwarze 2066: static int
1.271 schwarze 2067: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.88 kristaps 2068: {
1.271 schwarze 2069: char *cp, *name;
2070: size_t sz;
1.310 schwarze 2071: int number, savepos, istrue, wanttrue;
1.88 kristaps 2072:
1.198 schwarze 2073: if ('!' == v[*pos]) {
2074: wanttrue = 0;
2075: (*pos)++;
2076: } else
2077: wanttrue = 1;
2078:
1.88 kristaps 2079: switch (v[*pos]) {
1.240 schwarze 2080: case '\0':
1.277 schwarze 2081: return 0;
1.207 schwarze 2082: case 'n':
2083: case 'o':
1.88 kristaps 2084: (*pos)++;
1.277 schwarze 2085: return wanttrue;
1.207 schwarze 2086: case 'c':
2087: case 'e':
2088: case 't':
1.239 schwarze 2089: case 'v':
1.88 kristaps 2090: (*pos)++;
1.277 schwarze 2091: return !wanttrue;
1.310 schwarze 2092: case 'd':
1.271 schwarze 2093: case 'r':
1.310 schwarze 2094: cp = v + *pos + 1;
2095: while (*cp == ' ')
2096: cp++;
2097: name = cp;
2098: sz = roff_getname(r, &cp, ln, cp - v);
2099: istrue = sz && (v[*pos] == 'r' ? roff_hasregn(r, name, sz) :
2100: (roff_getstrn(r, name, sz) != NULL ||
2101: roff_getrenn(r, name, sz) != NULL));
1.271 schwarze 2102: *pos = cp - v;
1.310 schwarze 2103: return istrue == wanttrue;
1.88 kristaps 2104: default:
2105: break;
2106: }
2107:
1.241 schwarze 2108: savepos = *pos;
1.261 schwarze 2109: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.277 schwarze 2110: return (number > 0) == wanttrue;
1.241 schwarze 2111: else if (*pos == savepos)
1.277 schwarze 2112: return roff_evalstrcond(v, pos) == wanttrue;
1.204 schwarze 2113: else
1.277 schwarze 2114: return 0;
1.88 kristaps 2115: }
2116:
1.74 kristaps 2117: static enum rofferr
1.103 kristaps 2118: roff_line_ignore(ROFF_ARGS)
1.89 kristaps 2119: {
1.123 schwarze 2120:
1.277 schwarze 2121: return ROFF_IGN;
1.89 kristaps 2122: }
2123:
1.104 kristaps 2124: static enum rofferr
1.251 schwarze 2125: roff_insec(ROFF_ARGS)
2126: {
2127:
2128: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
1.295 schwarze 2129: ln, ppos, roff_name[tok]);
1.277 schwarze 2130: return ROFF_IGN;
1.251 schwarze 2131: }
2132:
2133: static enum rofferr
2134: roff_unsupp(ROFF_ARGS)
2135: {
2136:
2137: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
1.295 schwarze 2138: ln, ppos, roff_name[tok]);
1.277 schwarze 2139: return ROFF_IGN;
1.251 schwarze 2140: }
2141:
2142: static enum rofferr
1.82 kristaps 2143: roff_cond(ROFF_ARGS)
1.74 kristaps 2144: {
1.173 schwarze 2145:
2146: roffnode_push(r, tok, NULL, ln, ppos);
1.74 kristaps 2147:
1.207 schwarze 2148: /*
1.134 kristaps 2149: * An `.el' has no conditional body: it will consume the value
2150: * of the current rstack entry set in prior `ie' calls or
1.207 schwarze 2151: * defaults to DENY.
1.134 kristaps 2152: *
2153: * If we're not an `el', however, then evaluate the conditional.
2154: */
1.133 kristaps 2155:
1.238 schwarze 2156: r->last->rule = tok == ROFF_el ?
1.207 schwarze 2157: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.238 schwarze 2158: roff_evalcond(r, ln, buf->buf, &pos);
1.77 kristaps 2159:
1.134 kristaps 2160: /*
2161: * An if-else will put the NEGATION of the current evaluated
2162: * conditional into the stack of rules.
2163: */
2164:
1.238 schwarze 2165: if (tok == ROFF_ie) {
1.223 schwarze 2166: if (r->rstackpos + 1 == r->rstacksz) {
2167: r->rstacksz += 16;
2168: r->rstack = mandoc_reallocarray(r->rstack,
2169: r->rstacksz, sizeof(int));
1.134 kristaps 2170: }
1.198 schwarze 2171: r->rstack[++r->rstackpos] = !r->last->rule;
1.82 kristaps 2172: }
1.88 kristaps 2173:
2174: /* If the parent has false as its rule, then so do we. */
2175:
1.198 schwarze 2176: if (r->last->parent && !r->last->parent->rule)
2177: r->last->rule = 0;
1.88 kristaps 2178:
2179: /*
1.173 schwarze 2180: * Determine scope.
2181: * If there is nothing on the line after the conditional,
2182: * not even whitespace, use next-line scope.
1.88 kristaps 2183: */
1.74 kristaps 2184:
1.238 schwarze 2185: if (buf->buf[pos] == '\0') {
1.173 schwarze 2186: r->last->endspan = 2;
2187: goto out;
2188: }
2189:
1.238 schwarze 2190: while (buf->buf[pos] == ' ')
1.173 schwarze 2191: pos++;
2192:
2193: /* An opening brace requests multiline scope. */
1.75 kristaps 2194:
1.238 schwarze 2195: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.75 kristaps 2196: r->last->endspan = -1;
2197: pos += 2;
1.272 schwarze 2198: while (buf->buf[pos] == ' ')
2199: pos++;
1.173 schwarze 2200: goto out;
1.207 schwarze 2201: }
1.74 kristaps 2202:
1.77 kristaps 2203: /*
1.173 schwarze 2204: * Anything else following the conditional causes
2205: * single-line scope. Warn if the scope contains
2206: * nothing but trailing whitespace.
1.77 kristaps 2207: */
2208:
1.238 schwarze 2209: if (buf->buf[pos] == '\0')
1.216 schwarze 2210: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
1.295 schwarze 2211: ln, ppos, roff_name[tok]);
1.77 kristaps 2212:
1.173 schwarze 2213: r->last->endspan = 1;
1.74 kristaps 2214:
1.173 schwarze 2215: out:
1.75 kristaps 2216: *offs = pos;
1.277 schwarze 2217: return ROFF_RERUN;
1.83 schwarze 2218: }
2219:
2220: static enum rofferr
1.92 schwarze 2221: roff_ds(ROFF_ARGS)
2222: {
1.212 schwarze 2223: char *string;
2224: const char *name;
2225: size_t namesz;
1.96 kristaps 2226:
1.251 schwarze 2227: /* Ignore groff compatibility mode for now. */
2228:
2229: if (tok == ROFF_ds1)
2230: tok = ROFF_ds;
2231: else if (tok == ROFF_as1)
2232: tok = ROFF_as;
2233:
1.96 kristaps 2234: /*
1.212 schwarze 2235: * The first word is the name of the string.
2236: * If it is empty or terminated by an escape sequence,
2237: * abort the `ds' request without defining anything.
1.96 kristaps 2238: */
1.92 schwarze 2239:
1.238 schwarze 2240: name = string = buf->buf + pos;
2241: if (*name == '\0')
1.277 schwarze 2242: return ROFF_IGN;
1.92 schwarze 2243:
1.212 schwarze 2244: namesz = roff_getname(r, &string, ln, pos);
1.238 schwarze 2245: if (name[namesz] == '\\')
1.277 schwarze 2246: return ROFF_IGN;
1.212 schwarze 2247:
2248: /* Read past the initial double-quote, if any. */
1.238 schwarze 2249: if (*string == '"')
1.92 schwarze 2250: string++;
2251:
1.96 kristaps 2252: /* The rest is the value. */
1.212 schwarze 2253: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2254: ROFF_as == tok);
1.311 schwarze 2255: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.277 schwarze 2256: return ROFF_IGN;
1.92 schwarze 2257: }
2258:
1.204 schwarze 2259: /*
2260: * Parse a single operator, one or two characters long.
2261: * If the operator is recognized, return success and advance the
2262: * parse point, else return failure and let the parse point unchanged.
2263: */
2264: static int
2265: roff_getop(const char *v, int *pos, char *res)
2266: {
2267:
2268: *res = v[*pos];
2269:
2270: switch (*res) {
1.207 schwarze 2271: case '+':
2272: case '-':
2273: case '*':
2274: case '/':
2275: case '%':
2276: case '&':
2277: case ':':
1.204 schwarze 2278: break;
2279: case '<':
2280: switch (v[*pos + 1]) {
1.207 schwarze 2281: case '=':
1.204 schwarze 2282: *res = 'l';
2283: (*pos)++;
2284: break;
1.207 schwarze 2285: case '>':
1.204 schwarze 2286: *res = '!';
2287: (*pos)++;
2288: break;
1.207 schwarze 2289: case '?':
1.204 schwarze 2290: *res = 'i';
2291: (*pos)++;
2292: break;
2293: default:
2294: break;
2295: }
2296: break;
2297: case '>':
2298: switch (v[*pos + 1]) {
1.207 schwarze 2299: case '=':
1.204 schwarze 2300: *res = 'g';
2301: (*pos)++;
2302: break;
1.207 schwarze 2303: case '?':
1.204 schwarze 2304: *res = 'a';
2305: (*pos)++;
2306: break;
2307: default:
2308: break;
2309: }
2310: break;
2311: case '=':
2312: if ('=' == v[*pos + 1])
2313: (*pos)++;
2314: break;
2315: default:
1.277 schwarze 2316: return 0;
1.204 schwarze 2317: }
2318: (*pos)++;
2319:
1.277 schwarze 2320: return *res;
1.204 schwarze 2321: }
2322:
2323: /*
2324: * Evaluate either a parenthesized numeric expression
2325: * or a single signed integer number.
2326: */
2327: static int
1.235 schwarze 2328: roff_evalpar(struct roff *r, int ln,
1.261 schwarze 2329: const char *v, int *pos, int *res, int flags)
1.204 schwarze 2330: {
2331:
2332: if ('(' != v[*pos])
1.277 schwarze 2333: return roff_getnum(v, pos, res, flags);
1.204 schwarze 2334:
2335: (*pos)++;
1.261 schwarze 2336: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.277 schwarze 2337: return 0;
1.204 schwarze 2338:
1.206 schwarze 2339: /*
2340: * Omission of the closing parenthesis
2341: * is an error in validation mode,
2342: * but ignored in evaluation mode.
2343: */
2344:
1.204 schwarze 2345: if (')' == v[*pos])
2346: (*pos)++;
1.206 schwarze 2347: else if (NULL == res)
1.277 schwarze 2348: return 0;
1.204 schwarze 2349:
1.277 schwarze 2350: return 1;
1.204 schwarze 2351: }
2352:
2353: /*
2354: * Evaluate a complete numeric expression.
2355: * Proceed left to right, there is no concept of precedence.
2356: */
2357: static int
1.235 schwarze 2358: roff_evalnum(struct roff *r, int ln, const char *v,
1.261 schwarze 2359: int *pos, int *res, int flags)
1.204 schwarze 2360: {
2361: int mypos, operand2;
2362: char operator;
2363:
2364: if (NULL == pos) {
2365: mypos = 0;
2366: pos = &mypos;
2367: }
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, res, flags))
1.277 schwarze 2374: return 0;
1.204 schwarze 2375:
2376: while (1) {
1.261 schwarze 2377: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2378: while (isspace((unsigned char)v[*pos]))
2379: (*pos)++;
2380:
2381: if ( ! roff_getop(v, pos, &operator))
2382: break;
2383:
1.261 schwarze 2384: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2385: while (isspace((unsigned char)v[*pos]))
2386: (*pos)++;
2387:
1.261 schwarze 2388: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.277 schwarze 2389: return 0;
1.204 schwarze 2390:
1.261 schwarze 2391: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2392: while (isspace((unsigned char)v[*pos]))
2393: (*pos)++;
1.206 schwarze 2394:
2395: if (NULL == res)
2396: continue;
1.204 schwarze 2397:
2398: switch (operator) {
1.207 schwarze 2399: case '+':
1.204 schwarze 2400: *res += operand2;
2401: break;
1.207 schwarze 2402: case '-':
1.204 schwarze 2403: *res -= operand2;
2404: break;
1.207 schwarze 2405: case '*':
1.204 schwarze 2406: *res *= operand2;
2407: break;
1.207 schwarze 2408: case '/':
1.244 schwarze 2409: if (operand2 == 0) {
1.235 schwarze 2410: mandoc_msg(MANDOCERR_DIVZERO,
1.234 kristaps 2411: r->parse, ln, *pos, v);
2412: *res = 0;
2413: break;
2414: }
1.204 schwarze 2415: *res /= operand2;
2416: break;
1.207 schwarze 2417: case '%':
1.244 schwarze 2418: if (operand2 == 0) {
2419: mandoc_msg(MANDOCERR_DIVZERO,
2420: r->parse, ln, *pos, v);
2421: *res = 0;
2422: break;
2423: }
1.204 schwarze 2424: *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 'l':
1.204 schwarze 2433: *res = *res <= operand2;
2434: break;
1.207 schwarze 2435: case 'g':
1.204 schwarze 2436: *res = *res >= operand2;
2437: break;
1.207 schwarze 2438: case '=':
1.204 schwarze 2439: *res = *res == operand2;
2440: break;
1.207 schwarze 2441: case '!':
1.204 schwarze 2442: *res = *res != operand2;
2443: break;
1.207 schwarze 2444: case '&':
1.204 schwarze 2445: *res = *res && operand2;
2446: break;
1.207 schwarze 2447: case ':':
1.204 schwarze 2448: *res = *res || operand2;
2449: break;
1.207 schwarze 2450: case 'i':
1.204 schwarze 2451: if (operand2 < *res)
2452: *res = operand2;
2453: break;
1.207 schwarze 2454: case 'a':
1.204 schwarze 2455: if (operand2 > *res)
2456: *res = operand2;
2457: break;
2458: default:
2459: abort();
2460: }
2461: }
1.277 schwarze 2462: return 1;
1.204 schwarze 2463: }
2464:
1.266 schwarze 2465: /* --- register management ------------------------------------------------ */
2466:
1.180 schwarze 2467: void
1.187 schwarze 2468: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.147 kristaps 2469: {
1.180 schwarze 2470: struct roffreg *reg;
2471:
2472: /* Search for an existing register with the same name. */
2473: reg = r->regtab;
2474:
2475: while (reg && strcmp(name, reg->key.p))
2476: reg = reg->next;
1.147 kristaps 2477:
1.180 schwarze 2478: if (NULL == reg) {
2479: /* Create a new register. */
2480: reg = mandoc_malloc(sizeof(struct roffreg));
2481: reg->key.p = mandoc_strdup(name);
2482: reg->key.sz = strlen(name);
1.187 schwarze 2483: reg->val = 0;
1.180 schwarze 2484: reg->next = r->regtab;
2485: r->regtab = reg;
2486: }
2487:
1.187 schwarze 2488: if ('+' == sign)
2489: reg->val += val;
2490: else if ('-' == sign)
2491: reg->val -= val;
2492: else
2493: reg->val = val;
1.147 kristaps 2494: }
2495:
1.192 schwarze 2496: /*
2497: * Handle some predefined read-only number registers.
2498: * For now, return -1 if the requested register is not predefined;
2499: * in case a predefined read-only register having the value -1
2500: * were to turn up, another special value would have to be chosen.
2501: */
2502: static int
1.273 schwarze 2503: roff_getregro(const struct roff *r, const char *name)
1.192 schwarze 2504: {
2505:
2506: switch (*name) {
1.273 schwarze 2507: case '$': /* Number of arguments of the last macro evaluated. */
1.277 schwarze 2508: return r->argc;
1.207 schwarze 2509: case 'A': /* ASCII approximation mode is always off. */
1.277 schwarze 2510: return 0;
1.207 schwarze 2511: case 'g': /* Groff compatibility mode is always on. */
1.277 schwarze 2512: return 1;
1.207 schwarze 2513: case 'H': /* Fixed horizontal resolution. */
1.277 schwarze 2514: return 24;
1.207 schwarze 2515: case 'j': /* Always adjust left margin only. */
1.277 schwarze 2516: return 0;
1.207 schwarze 2517: case 'T': /* Some output device is always defined. */
1.277 schwarze 2518: return 1;
1.207 schwarze 2519: case 'V': /* Fixed vertical resolution. */
1.277 schwarze 2520: return 40;
1.192 schwarze 2521: default:
1.277 schwarze 2522: return -1;
1.192 schwarze 2523: }
2524: }
2525:
1.181 schwarze 2526: int
1.180 schwarze 2527: roff_getreg(const struct roff *r, const char *name)
1.147 kristaps 2528: {
1.180 schwarze 2529: struct roffreg *reg;
1.192 schwarze 2530: int val;
2531:
2532: if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) {
1.273 schwarze 2533: val = roff_getregro(r, name + 1);
1.192 schwarze 2534: if (-1 != val)
1.277 schwarze 2535: return val;
1.192 schwarze 2536: }
1.180 schwarze 2537:
2538: for (reg = r->regtab; reg; reg = reg->next)
2539: if (0 == strcmp(name, reg->key.p))
1.277 schwarze 2540: return reg->val;
1.181 schwarze 2541:
1.277 schwarze 2542: return 0;
1.181 schwarze 2543: }
2544:
2545: static int
2546: roff_getregn(const struct roff *r, const char *name, size_t len)
2547: {
2548: struct roffreg *reg;
1.192 schwarze 2549: int val;
2550:
2551: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2552: val = roff_getregro(r, name + 1);
1.192 schwarze 2553: if (-1 != val)
1.277 schwarze 2554: return val;
1.192 schwarze 2555: }
1.181 schwarze 2556:
2557: for (reg = r->regtab; reg; reg = reg->next)
2558: if (len == reg->key.sz &&
2559: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2560: return reg->val;
1.271 schwarze 2561:
1.277 schwarze 2562: return 0;
1.271 schwarze 2563: }
2564:
2565: static int
2566: roff_hasregn(const struct roff *r, const char *name, size_t len)
2567: {
2568: struct roffreg *reg;
2569: int val;
2570:
2571: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2572: val = roff_getregro(r, name + 1);
1.271 schwarze 2573: if (-1 != val)
1.277 schwarze 2574: return 1;
1.271 schwarze 2575: }
2576:
2577: for (reg = r->regtab; reg; reg = reg->next)
2578: if (len == reg->key.sz &&
2579: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2580: return 1;
1.147 kristaps 2581:
1.277 schwarze 2582: return 0;
1.147 kristaps 2583: }
2584:
1.180 schwarze 2585: static void
2586: roff_freereg(struct roffreg *reg)
1.147 kristaps 2587: {
1.180 schwarze 2588: struct roffreg *old_reg;
1.147 kristaps 2589:
1.180 schwarze 2590: while (NULL != reg) {
2591: free(reg->key.p);
2592: old_reg = reg;
2593: reg = reg->next;
2594: free(old_reg);
2595: }
1.147 kristaps 2596: }
1.92 schwarze 2597:
2598: static enum rofferr
1.89 kristaps 2599: roff_nr(ROFF_ARGS)
1.83 schwarze 2600: {
1.212 schwarze 2601: char *key, *val;
2602: size_t keysz;
1.138 kristaps 2603: int iv;
1.187 schwarze 2604: char sign;
1.89 kristaps 2605:
1.238 schwarze 2606: key = val = buf->buf + pos;
2607: if (*key == '\0')
1.277 schwarze 2608: return ROFF_IGN;
1.212 schwarze 2609:
2610: keysz = roff_getname(r, &val, ln, pos);
1.238 schwarze 2611: if (key[keysz] == '\\')
1.277 schwarze 2612: return ROFF_IGN;
1.212 schwarze 2613: key[keysz] = '\0';
1.89 kristaps 2614:
1.187 schwarze 2615: sign = *val;
1.238 schwarze 2616: if (sign == '+' || sign == '-')
1.187 schwarze 2617: val++;
2618:
1.261 schwarze 2619: if (roff_evalnum(r, ln, val, NULL, &iv, ROFFNUM_SCALE))
1.204 schwarze 2620: roff_setreg(r, key, iv, sign);
1.109 kristaps 2621:
1.277 schwarze 2622: return ROFF_IGN;
1.203 schwarze 2623: }
2624:
2625: static enum rofferr
2626: roff_rr(ROFF_ARGS)
2627: {
2628: struct roffreg *reg, **prev;
1.212 schwarze 2629: char *name, *cp;
2630: size_t namesz;
1.203 schwarze 2631:
1.238 schwarze 2632: name = cp = buf->buf + pos;
2633: if (*name == '\0')
1.277 schwarze 2634: return ROFF_IGN;
1.212 schwarze 2635: namesz = roff_getname(r, &cp, ln, pos);
2636: name[namesz] = '\0';
1.203 schwarze 2637:
2638: prev = &r->regtab;
2639: while (1) {
2640: reg = *prev;
1.238 schwarze 2641: if (reg == NULL || !strcmp(name, reg->key.p))
1.203 schwarze 2642: break;
2643: prev = ®->next;
2644: }
1.238 schwarze 2645: if (reg != NULL) {
1.203 schwarze 2646: *prev = reg->next;
2647: free(reg->key.p);
2648: free(reg);
2649: }
1.277 schwarze 2650: return ROFF_IGN;
1.122 schwarze 2651: }
2652:
1.266 schwarze 2653: /* --- handler functions for roff requests -------------------------------- */
2654:
1.122 schwarze 2655: static enum rofferr
2656: roff_rm(ROFF_ARGS)
2657: {
2658: const char *name;
2659: char *cp;
1.212 schwarze 2660: size_t namesz;
1.122 schwarze 2661:
1.238 schwarze 2662: cp = buf->buf + pos;
2663: while (*cp != '\0') {
1.212 schwarze 2664: name = cp;
1.238 schwarze 2665: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.212 schwarze 2666: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.311 schwarze 2667: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.238 schwarze 2668: if (name[namesz] == '\\')
1.212 schwarze 2669: break;
1.122 schwarze 2670: }
1.277 schwarze 2671: return ROFF_IGN;
1.178 schwarze 2672: }
2673:
2674: static enum rofferr
2675: roff_it(ROFF_ARGS)
2676: {
2677: int iv;
2678:
2679: /* Parse the number of lines. */
1.261 schwarze 2680:
2681: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.222 schwarze 2682: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.238 schwarze 2683: ln, ppos, buf->buf + 1);
1.277 schwarze 2684: return ROFF_IGN;
1.178 schwarze 2685: }
2686:
1.262 schwarze 2687: while (isspace((unsigned char)buf->buf[pos]))
2688: pos++;
2689:
2690: /*
2691: * Arm the input line trap.
2692: * Special-casing "an-trap" is an ugly workaround to cope
2693: * with DocBook stupidly fiddling with man(7) internals.
2694: */
1.261 schwarze 2695:
1.178 schwarze 2696: roffit_lines = iv;
1.262 schwarze 2697: roffit_macro = mandoc_strdup(iv != 1 ||
2698: strcmp(buf->buf + pos, "an-trap") ?
2699: buf->buf + pos : "br");
1.277 schwarze 2700: return ROFF_IGN;
1.175 schwarze 2701: }
2702:
2703: static enum rofferr
2704: roff_Dd(ROFF_ARGS)
2705: {
2706: const char *const *cp;
2707:
1.227 schwarze 2708: if ((r->options & (MPARSE_MDOC | MPARSE_QUICK)) == 0)
1.175 schwarze 2709: for (cp = __mdoc_reserved; *cp; cp++)
2710: roff_setstr(r, *cp, NULL, 0);
2711:
1.227 schwarze 2712: if (r->format == 0)
2713: r->format = MPARSE_MDOC;
2714:
1.277 schwarze 2715: return ROFF_CONT;
1.175 schwarze 2716: }
2717:
2718: static enum rofferr
2719: roff_TH(ROFF_ARGS)
2720: {
2721: const char *const *cp;
2722:
1.227 schwarze 2723: if ((r->options & MPARSE_QUICK) == 0)
1.175 schwarze 2724: for (cp = __man_reserved; *cp; cp++)
2725: roff_setstr(r, *cp, NULL, 0);
2726:
1.227 schwarze 2727: if (r->format == 0)
2728: r->format = MPARSE_MAN;
2729:
1.277 schwarze 2730: return ROFF_CONT;
1.109 kristaps 2731: }
2732:
2733: static enum rofferr
2734: roff_TE(ROFF_ARGS)
2735: {
2736:
2737: if (NULL == r->tbl)
1.221 schwarze 2738: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2739: ln, ppos, "TE");
1.258 schwarze 2740: else if ( ! tbl_end(&r->tbl)) {
2741: free(buf->buf);
2742: buf->buf = mandoc_strdup(".sp");
2743: buf->sz = 4;
1.277 schwarze 2744: return ROFF_REPARSE;
1.258 schwarze 2745: }
1.277 schwarze 2746: return ROFF_IGN;
1.112 kristaps 2747: }
2748:
2749: static enum rofferr
2750: roff_T_(ROFF_ARGS)
2751: {
2752:
2753: if (NULL == r->tbl)
1.221 schwarze 2754: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2755: ln, ppos, "T&");
1.112 kristaps 2756: else
1.296 schwarze 2757: tbl_restart(ln, ppos, r->tbl);
1.112 kristaps 2758:
1.277 schwarze 2759: return ROFF_IGN;
1.109 kristaps 2760: }
2761:
1.230 schwarze 2762: /*
2763: * Handle in-line equation delimiters.
2764: */
2765: static enum rofferr
1.238 schwarze 2766: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.151 kristaps 2767: {
1.233 schwarze 2768: char *cp1, *cp2;
2769: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.151 kristaps 2770:
1.230 schwarze 2771: /*
2772: * Outside equations, look for an opening delimiter.
2773: * If we are inside an equation, we already know it is
2774: * in-line, or this function wouldn't have been called;
2775: * so look for a closing delimiter.
2776: */
2777:
1.238 schwarze 2778: cp1 = buf->buf + pos;
1.230 schwarze 2779: cp2 = strchr(cp1, r->eqn == NULL ?
2780: r->last_eqn->odelim : r->last_eqn->cdelim);
2781: if (cp2 == NULL)
1.277 schwarze 2782: return ROFF_CONT;
1.230 schwarze 2783:
1.233 schwarze 2784: *cp2++ = '\0';
2785: bef_pr = bef_nl = aft_nl = aft_pr = "";
2786:
2787: /* Handle preceding text, protecting whitespace. */
2788:
1.238 schwarze 2789: if (*buf->buf != '\0') {
1.233 schwarze 2790: if (r->eqn == NULL)
2791: bef_pr = "\\&";
2792: bef_nl = "\n";
2793: }
2794:
2795: /*
2796: * Prepare replacing the delimiter with an equation macro
2797: * and drop leading white space from the equation.
2798: */
1.230 schwarze 2799:
1.233 schwarze 2800: if (r->eqn == NULL) {
2801: while (*cp2 == ' ')
2802: cp2++;
2803: mac = ".EQ";
2804: } else
2805: mac = ".EN";
2806:
2807: /* Handle following text, protecting whitespace. */
2808:
2809: if (*cp2 != '\0') {
2810: aft_nl = "\n";
2811: if (r->eqn != NULL)
2812: aft_pr = "\\&";
2813: }
2814:
2815: /* Do the actual replacement. */
2816:
1.238 schwarze 2817: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.233 schwarze 2818: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.238 schwarze 2819: free(buf->buf);
2820: buf->buf = cp1;
1.230 schwarze 2821:
2822: /* Toggle the in-line state of the eqn subsystem. */
2823:
2824: r->eqn_inline = r->eqn == NULL;
1.277 schwarze 2825: return ROFF_REPARSE;
1.151 kristaps 2826: }
2827:
1.235 schwarze 2828: static enum rofferr
2829: roff_EQ(ROFF_ARGS)
1.125 kristaps 2830: {
1.151 kristaps 2831: struct eqn_node *e;
1.125 kristaps 2832:
1.238 schwarze 2833: assert(r->eqn == NULL);
1.235 schwarze 2834: e = eqn_alloc(ppos, ln, r->parse);
1.125 kristaps 2835:
1.230 schwarze 2836: if (r->last_eqn) {
1.125 kristaps 2837: r->last_eqn->next = e;
1.230 schwarze 2838: e->delim = r->last_eqn->delim;
2839: e->odelim = r->last_eqn->odelim;
2840: e->cdelim = r->last_eqn->cdelim;
2841: } else
1.125 kristaps 2842: r->first_eqn = r->last_eqn = e;
2843:
2844: r->eqn = r->last_eqn = e;
1.151 kristaps 2845:
1.238 schwarze 2846: if (buf->buf[pos] != '\0')
1.235 schwarze 2847: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 2848: ".EQ %s", buf->buf + pos);
1.151 kristaps 2849:
1.277 schwarze 2850: return ROFF_IGN;
1.125 kristaps 2851: }
2852:
2853: static enum rofferr
2854: roff_EN(ROFF_ARGS)
2855: {
2856:
1.221 schwarze 2857: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
1.277 schwarze 2858: return ROFF_IGN;
1.125 kristaps 2859: }
2860:
2861: static enum rofferr
1.109 kristaps 2862: roff_TS(ROFF_ARGS)
2863: {
1.176 schwarze 2864: struct tbl_node *tbl;
1.89 kristaps 2865:
1.115 kristaps 2866: if (r->tbl) {
1.221 schwarze 2867: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
2868: ln, ppos, "TS breaks TS");
1.151 kristaps 2869: tbl_end(&r->tbl);
1.115 kristaps 2870: }
1.83 schwarze 2871:
1.176 schwarze 2872: tbl = tbl_alloc(ppos, ln, r->parse);
1.113 kristaps 2873:
2874: if (r->last_tbl)
1.176 schwarze 2875: r->last_tbl->next = tbl;
1.113 kristaps 2876: else
1.176 schwarze 2877: r->first_tbl = r->last_tbl = tbl;
1.113 kristaps 2878:
1.176 schwarze 2879: r->tbl = r->last_tbl = tbl;
1.297 schwarze 2880: return ROFF_IGN;
2881: }
2882:
2883: static enum rofferr
2884: roff_onearg(ROFF_ARGS)
2885: {
2886: struct roff_node *n;
2887: char *cp;
1.305 schwarze 2888: int npos;
1.297 schwarze 2889:
1.302 schwarze 2890: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
2891: (tok == ROFF_sp || tok == ROFF_ti))
2892: man_breakscope(r->man, tok);
2893:
1.309 schwarze 2894: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.305 schwarze 2895: r->man->last = roffce_node;
2896: r->man->next = ROFF_NEXT_SIBLING;
2897: }
2898:
1.297 schwarze 2899: roff_elem_alloc(r->man, ln, ppos, tok);
2900: n = r->man->last;
2901:
2902: cp = buf->buf + pos;
2903: if (*cp != '\0') {
2904: while (*cp != '\0' && *cp != ' ')
2905: cp++;
2906: while (*cp == ' ')
2907: *cp++ = '\0';
2908: if (*cp != '\0')
2909: mandoc_vmsg(MANDOCERR_ARG_EXCESS,
2910: r->parse, ln, cp - buf->buf,
2911: "%s ... %s", roff_name[tok], cp);
2912: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.300 schwarze 2913: }
2914:
1.309 schwarze 2915: if (tok == ROFF_ce || tok == ROFF_rj) {
2916: if (r->man->last->type == ROFFT_ELEM) {
1.305 schwarze 2917: roff_word_alloc(r->man, ln, pos, "1");
2918: r->man->last->flags |= NODE_NOSRC;
2919: }
2920: npos = 0;
2921: if (roff_evalnum(r, ln, r->man->last->string, &npos,
2922: &roffce_lines, 0) == 0) {
2923: mandoc_vmsg(MANDOCERR_CE_NONUM,
2924: r->parse, ln, pos, "ce %s", buf->buf + pos);
2925: roffce_lines = 1;
2926: }
2927: if (roffce_lines < 1) {
2928: r->man->last = r->man->last->parent;
2929: roffce_node = NULL;
2930: roffce_lines = 0;
2931: } else
2932: roffce_node = r->man->last->parent;
2933: } else {
2934: n->flags |= NODE_VALID | NODE_ENDED;
2935: r->man->last = n;
2936: }
2937: n->flags |= NODE_LINE;
1.300 schwarze 2938: r->man->next = ROFF_NEXT_SIBLING;
2939: return ROFF_IGN;
2940: }
2941:
2942: static enum rofferr
2943: roff_manyarg(ROFF_ARGS)
2944: {
2945: struct roff_node *n;
2946: char *sp, *ep;
2947:
2948: roff_elem_alloc(r->man, ln, ppos, tok);
2949: n = r->man->last;
2950:
2951: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
2952: while (*ep != '\0' && *ep != ' ')
2953: ep++;
2954: while (*ep == ' ')
2955: *ep++ = '\0';
2956: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.297 schwarze 2957: }
2958:
2959: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
2960: r->man->last = n;
2961: r->man->next = ROFF_NEXT_SIBLING;
1.277 schwarze 2962: return ROFF_IGN;
1.251 schwarze 2963: }
2964:
2965: static enum rofferr
1.311 schwarze 2966: roff_als(ROFF_ARGS)
2967: {
2968: char *oldn, *newn, *end, *value;
2969: size_t oldsz, newsz, valsz;
2970:
2971: newn = oldn = buf->buf + pos;
2972: if (*newn == '\0')
2973: return ROFF_IGN;
2974:
2975: newsz = roff_getname(r, &oldn, ln, pos);
2976: if (newn[newsz] == '\\' || *oldn == '\0')
2977: return ROFF_IGN;
2978:
2979: end = oldn;
2980: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
2981: if (oldsz == 0)
2982: return ROFF_IGN;
2983:
2984: valsz = mandoc_asprintf(&value, ".%.*s \\$*\n", (int)oldsz, oldn);
2985: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
2986: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
2987: free(value);
2988: return ROFF_IGN;
2989: }
2990:
2991: static enum rofferr
1.296 schwarze 2992: roff_br(ROFF_ARGS)
1.251 schwarze 2993: {
1.302 schwarze 2994: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
2995: man_breakscope(r->man, ROFF_br);
1.296 schwarze 2996: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
2997: if (buf->buf[pos] != '\0')
2998: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
2999: "%s %s", roff_name[tok], buf->buf + pos);
3000: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3001: r->man->next = ROFF_NEXT_SIBLING;
3002: return ROFF_IGN;
1.92 schwarze 3003: }
3004:
1.105 kristaps 3005: static enum rofferr
1.174 kristaps 3006: roff_cc(ROFF_ARGS)
3007: {
3008: const char *p;
3009:
1.238 schwarze 3010: p = buf->buf + pos;
1.174 kristaps 3011:
1.238 schwarze 3012: if (*p == '\0' || (r->control = *p++) == '.')
1.303 schwarze 3013: r->control = '\0';
1.174 kristaps 3014:
1.238 schwarze 3015: if (*p != '\0')
1.260 schwarze 3016: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3017: ln, p - buf->buf, "cc ... %s", p);
1.174 kristaps 3018:
1.277 schwarze 3019: return ROFF_IGN;
1.174 kristaps 3020: }
3021:
3022: static enum rofferr
1.303 schwarze 3023: roff_ec(ROFF_ARGS)
3024: {
3025: const char *p;
3026:
3027: p = buf->buf + pos;
3028: if (*p == '\0')
3029: r->escape = '\\';
3030: else {
3031: r->escape = *p;
3032: if (*++p != '\0')
3033: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3034: ln, p - buf->buf, "ec ... %s", p);
3035: }
3036: return ROFF_IGN;
3037: }
3038:
3039: static enum rofferr
3040: roff_eo(ROFF_ARGS)
3041: {
3042: r->escape = '\0';
3043: if (buf->buf[pos] != '\0')
3044: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse,
3045: ln, pos, "eo %s", buf->buf + pos);
3046: return ROFF_IGN;
3047: }
3048:
3049: static enum rofferr
1.164 kristaps 3050: roff_tr(ROFF_ARGS)
3051: {
3052: const char *p, *first, *second;
3053: size_t fsz, ssz;
3054: enum mandoc_esc esc;
3055:
1.238 schwarze 3056: p = buf->buf + pos;
1.164 kristaps 3057:
1.238 schwarze 3058: if (*p == '\0') {
1.260 schwarze 3059: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.277 schwarze 3060: return ROFF_IGN;
1.164 kristaps 3061: }
3062:
1.238 schwarze 3063: while (*p != '\0') {
1.164 kristaps 3064: fsz = ssz = 1;
3065:
3066: first = p++;
1.238 schwarze 3067: if (*first == '\\') {
1.164 kristaps 3068: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3069: if (esc == ESCAPE_ERROR) {
1.219 schwarze 3070: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 3071: ln, (int)(p - buf->buf), first);
1.277 schwarze 3072: return ROFF_IGN;
1.164 kristaps 3073: }
3074: fsz = (size_t)(p - first);
3075: }
3076:
3077: second = p++;
1.238 schwarze 3078: if (*second == '\\') {
1.164 kristaps 3079: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3080: if (esc == ESCAPE_ERROR) {
1.219 schwarze 3081: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 3082: ln, (int)(p - buf->buf), second);
1.277 schwarze 3083: return ROFF_IGN;
1.164 kristaps 3084: }
3085: ssz = (size_t)(p - second);
1.238 schwarze 3086: } else if (*second == '\0') {
1.260 schwarze 3087: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
3088: ln, first - buf->buf, "tr %s", first);
1.164 kristaps 3089: second = " ";
1.165 kristaps 3090: p--;
1.164 kristaps 3091: }
3092:
1.167 kristaps 3093: if (fsz > 1) {
1.207 schwarze 3094: roff_setstrn(&r->xmbtab, first, fsz,
3095: second, ssz, 0);
1.167 kristaps 3096: continue;
3097: }
3098:
1.238 schwarze 3099: if (r->xtab == NULL)
1.207 schwarze 3100: r->xtab = mandoc_calloc(128,
3101: sizeof(struct roffstr));
1.167 kristaps 3102:
3103: free(r->xtab[(int)*first].p);
3104: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3105: r->xtab[(int)*first].sz = ssz;
1.164 kristaps 3106: }
3107:
1.277 schwarze 3108: return ROFF_IGN;
1.164 kristaps 3109: }
3110:
3111: static enum rofferr
1.306 schwarze 3112: roff_rn(ROFF_ARGS)
3113: {
3114: const char *value;
3115: char *oldn, *newn, *end;
3116: size_t oldsz, newsz;
3117:
3118: oldn = newn = buf->buf + pos;
3119: if (*oldn == '\0')
3120: return ROFF_IGN;
3121:
3122: oldsz = roff_getname(r, &newn, ln, pos);
3123: if (oldn[oldsz] == '\\' || *newn == '\0')
3124: return ROFF_IGN;
3125:
3126: end = newn;
3127: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3128: if (newsz == 0)
3129: return ROFF_IGN;
3130:
3131: /*
3132: * Rename a user-defined macro bearing the old name,
3133: * overriding an existing renamed high-level macro
3134: * bearing the new name, if that exists.
3135: */
3136:
3137: if ((value = roff_getstrn(r, oldn, oldsz)) != NULL) {
3138: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3139: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3140: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3141: return ROFF_IGN;
3142: }
3143:
3144: /*
3145: * Rename a high-level macro bearing the old name,
3146: * either renaming it a second time if it was already
3147: * renamed before, or renaming it for the first time.
3148: * In both cases, override an existing user-defined
3149: * macro bearing the new name, if that exists.
3150: */
3151:
3152: if ((value = roff_getrenn(r, oldn, oldsz)) != NULL) {
3153: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3154: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
3155: } else
3156: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
3157: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3158: return ROFF_IGN;
3159: }
3160:
3161: static enum rofferr
1.105 kristaps 3162: roff_so(ROFF_ARGS)
3163: {
1.249 schwarze 3164: char *name, *cp;
1.105 kristaps 3165:
1.238 schwarze 3166: name = buf->buf + pos;
1.224 schwarze 3167: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.105 kristaps 3168:
3169: /*
3170: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3171: * opening anything that's not in our cwd or anything beneath
3172: * it. Thus, explicitly disallow traversing up the file-system
3173: * or using absolute paths.
3174: */
3175:
1.238 schwarze 3176: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.210 schwarze 3177: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
3178: ".so %s", name);
1.249 schwarze 3179: buf->sz = mandoc_asprintf(&cp,
3180: ".sp\nSee the file %s.\n.sp", name) + 1;
3181: free(buf->buf);
3182: buf->buf = cp;
3183: *offs = 0;
1.277 schwarze 3184: return ROFF_REPARSE;
1.105 kristaps 3185: }
3186:
3187: *offs = pos;
1.277 schwarze 3188: return ROFF_SO;
1.105 kristaps 3189: }
1.92 schwarze 3190:
1.266 schwarze 3191: /* --- user defined strings and macros ------------------------------------ */
3192:
1.106 kristaps 3193: static enum rofferr
3194: roff_userdef(ROFF_ARGS)
1.99 kristaps 3195: {
1.311 schwarze 3196: const char *arg[16], *ap;
1.106 kristaps 3197: char *cp, *n1, *n2;
1.292 schwarze 3198: int expand_count, i, ib, ie;
1.263 schwarze 3199: size_t asz, rsz;
1.106 kristaps 3200:
3201: /*
3202: * Collect pointers to macro argument strings
1.188 schwarze 3203: * and NUL-terminate them.
1.106 kristaps 3204: */
1.263 schwarze 3205:
1.273 schwarze 3206: r->argc = 0;
1.238 schwarze 3207: cp = buf->buf + pos;
1.311 schwarze 3208: for (i = 0; i < 16; i++) {
1.273 schwarze 3209: if (*cp == '\0')
3210: arg[i] = "";
3211: else {
3212: arg[i] = mandoc_getarg(r->parse, &cp, ln, &pos);
3213: r->argc = i + 1;
3214: }
3215: }
1.99 kristaps 3216:
1.106 kristaps 3217: /*
3218: * Expand macro arguments.
1.99 kristaps 3219: */
1.263 schwarze 3220:
3221: buf->sz = strlen(r->current_string) + 1;
1.292 schwarze 3222: n1 = n2 = cp = mandoc_malloc(buf->sz);
1.263 schwarze 3223: memcpy(n1, r->current_string, buf->sz);
1.292 schwarze 3224: expand_count = 0;
1.263 schwarze 3225: while (*cp != '\0') {
3226:
3227: /* Scan ahead for the next argument invocation. */
3228:
3229: if (*cp++ != '\\')
3230: continue;
3231: if (*cp++ != '$')
3232: continue;
1.274 schwarze 3233: if (*cp == '*') { /* \\$* inserts all arguments */
3234: ib = 0;
3235: ie = r->argc - 1;
3236: } else { /* \\$1 .. \\$9 insert one argument */
3237: ib = ie = *cp - '1';
3238: if (ib < 0 || ib > 8)
3239: continue;
3240: }
1.263 schwarze 3241: cp -= 2;
1.292 schwarze 3242:
3243: /*
3244: * Prevent infinite recursion.
3245: */
3246:
3247: if (cp >= n2)
3248: expand_count = 1;
3249: else if (++expand_count > EXPAND_LIMIT) {
3250: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
3251: ln, (int)(cp - n1), NULL);
1.293 schwarze 3252: free(buf->buf);
3253: buf->buf = n1;
1.292 schwarze 3254: return ROFF_IGN;
3255: }
1.263 schwarze 3256:
3257: /*
3258: * Determine the size of the expanded argument,
3259: * taking escaping of quotes into account.
3260: */
3261:
1.274 schwarze 3262: asz = ie > ib ? ie - ib : 0; /* for blanks */
3263: for (i = ib; i <= ie; i++) {
3264: for (ap = arg[i]; *ap != '\0'; ap++) {
3265: asz++;
3266: if (*ap == '"')
3267: asz += 3;
3268: }
1.263 schwarze 3269: }
3270: if (asz != 3) {
3271:
3272: /*
3273: * Determine the size of the rest of the
3274: * unexpanded macro, including the NUL.
3275: */
3276:
3277: rsz = buf->sz - (cp - n1) - 3;
3278:
3279: /*
3280: * When shrinking, move before
3281: * releasing the storage.
3282: */
3283:
3284: if (asz < 3)
3285: memmove(cp + asz, cp + 3, rsz);
3286:
3287: /*
3288: * Resize the storage for the macro
3289: * and readjust the parse pointer.
3290: */
3291:
3292: buf->sz += asz - 3;
3293: n2 = mandoc_realloc(n1, buf->sz);
3294: cp = n2 + (cp - n1);
3295: n1 = n2;
3296:
3297: /*
3298: * When growing, make room
3299: * for the expanded argument.
3300: */
3301:
3302: if (asz > 3)
3303: memmove(cp + asz, cp + 3, rsz);
3304: }
3305:
3306: /* Copy the expanded argument, escaping quotes. */
3307:
3308: n2 = cp;
1.274 schwarze 3309: for (i = ib; i <= ie; i++) {
3310: for (ap = arg[i]; *ap != '\0'; ap++) {
3311: if (*ap == '"') {
3312: memcpy(n2, "\\(dq", 4);
3313: n2 += 4;
3314: } else
3315: *n2++ = *ap;
3316: }
3317: if (i < ie)
3318: *n2++ = ' ';
1.106 kristaps 3319: }
1.99 kristaps 3320: }
3321:
1.106 kristaps 3322: /*
3323: * Replace the macro invocation
3324: * by the expanded macro.
3325: */
1.263 schwarze 3326:
1.238 schwarze 3327: free(buf->buf);
3328: buf->buf = n1;
1.248 schwarze 3329: *offs = 0;
1.106 kristaps 3330:
1.277 schwarze 3331: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
3332: ROFF_REPARSE : ROFF_APPEND;
1.99 kristaps 3333: }
1.121 schwarze 3334:
1.306 schwarze 3335: /*
3336: * Calling a high-level macro that was renamed with .rn.
3337: * r->current_string has already been set up by roff_parse().
3338: */
3339: static enum rofferr
3340: roff_renamed(ROFF_ARGS)
3341: {
3342: char *nbuf;
3343:
3344: buf->sz = mandoc_asprintf(&nbuf, ".%s %s", r->current_string,
3345: buf->buf + pos) + 1;
3346: free(buf->buf);
3347: buf->buf = nbuf;
3348: return ROFF_CONT;
3349: }
3350:
1.212 schwarze 3351: static size_t
1.121 schwarze 3352: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3353: {
3354: char *name, *cp;
1.212 schwarze 3355: size_t namesz;
1.121 schwarze 3356:
3357: name = *cpp;
3358: if ('\0' == *name)
1.277 schwarze 3359: return 0;
1.121 schwarze 3360:
1.212 schwarze 3361: /* Read until end of name and terminate it with NUL. */
3362: for (cp = name; 1; cp++) {
3363: if ('\0' == *cp || ' ' == *cp) {
3364: namesz = cp - name;
3365: break;
3366: }
1.121 schwarze 3367: if ('\\' != *cp)
3368: continue;
1.215 schwarze 3369: namesz = cp - name;
3370: if ('{' == cp[1] || '}' == cp[1])
3371: break;
1.121 schwarze 3372: cp++;
3373: if ('\\' == *cp)
3374: continue;
1.224 schwarze 3375: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3376: "%.*s", (int)(cp - name + 1), name);
1.212 schwarze 3377: mandoc_escape((const char **)&cp, NULL, NULL);
3378: break;
1.121 schwarze 3379: }
3380:
3381: /* Read past spaces. */
3382: while (' ' == *cp)
3383: cp++;
3384:
3385: *cpp = cp;
1.277 schwarze 3386: return namesz;
1.121 schwarze 3387: }
3388:
1.106 kristaps 3389: /*
3390: * Store *string into the user-defined string called *name.
3391: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.193 schwarze 3392: * append == 0: replace mode
3393: * append == 1: single-line append mode
3394: * append == 2: multiline append mode, append '\n' after each call
1.106 kristaps 3395: */
1.94 kristaps 3396: static void
1.106 kristaps 3397: roff_setstr(struct roff *r, const char *name, const char *string,
1.193 schwarze 3398: int append)
1.92 schwarze 3399: {
1.164 kristaps 3400:
3401: roff_setstrn(&r->strtab, name, strlen(name), string,
1.207 schwarze 3402: string ? strlen(string) : 0, append);
1.164 kristaps 3403: }
3404:
3405: static void
1.166 kristaps 3406: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.193 schwarze 3407: const char *string, size_t stringsz, int append)
1.164 kristaps 3408: {
1.166 kristaps 3409: struct roffkv *n;
1.164 kristaps 3410: char *c;
3411: int i;
3412: size_t oldch, newch;
1.92 schwarze 3413:
1.106 kristaps 3414: /* Search for an existing string with the same name. */
1.164 kristaps 3415: n = *r;
3416:
1.211 schwarze 3417: while (n && (namesz != n->key.sz ||
3418: strncmp(n->key.p, name, namesz)))
1.92 schwarze 3419: n = n->next;
1.94 kristaps 3420:
3421: if (NULL == n) {
1.106 kristaps 3422: /* Create a new string table entry. */
1.166 kristaps 3423: n = mandoc_malloc(sizeof(struct roffkv));
3424: n->key.p = mandoc_strndup(name, namesz);
3425: n->key.sz = namesz;
3426: n->val.p = NULL;
3427: n->val.sz = 0;
1.164 kristaps 3428: n->next = *r;
3429: *r = n;
1.193 schwarze 3430: } else if (0 == append) {
1.166 kristaps 3431: free(n->val.p);
3432: n->val.p = NULL;
3433: n->val.sz = 0;
1.106 kristaps 3434: }
3435:
3436: if (NULL == string)
3437: return;
3438:
3439: /*
3440: * One additional byte for the '\n' in multiline mode,
3441: * and one for the terminating '\0'.
3442: */
1.193 schwarze 3443: newch = stringsz + (1 < append ? 2u : 1u);
1.164 kristaps 3444:
1.166 kristaps 3445: if (NULL == n->val.p) {
3446: n->val.p = mandoc_malloc(newch);
3447: *n->val.p = '\0';
1.106 kristaps 3448: oldch = 0;
3449: } else {
1.166 kristaps 3450: oldch = n->val.sz;
3451: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.106 kristaps 3452: }
3453:
3454: /* Skip existing content in the destination buffer. */
1.166 kristaps 3455: c = n->val.p + (int)oldch;
1.106 kristaps 3456:
3457: /* Append new content to the destination buffer. */
1.164 kristaps 3458: i = 0;
3459: while (i < (int)stringsz) {
1.106 kristaps 3460: /*
3461: * Rudimentary roff copy mode:
3462: * Handle escaped backslashes.
3463: */
1.164 kristaps 3464: if ('\\' == string[i] && '\\' == string[i + 1])
3465: i++;
3466: *c++ = string[i++];
1.106 kristaps 3467: }
1.94 kristaps 3468:
1.106 kristaps 3469: /* Append terminating bytes. */
1.193 schwarze 3470: if (1 < append)
1.106 kristaps 3471: *c++ = '\n';
1.163 kristaps 3472:
1.106 kristaps 3473: *c = '\0';
1.166 kristaps 3474: n->val.sz = (int)(c - n->val.p);
1.92 schwarze 3475: }
3476:
1.94 kristaps 3477: static const char *
3478: roff_getstrn(const struct roff *r, const char *name, size_t len)
1.92 schwarze 3479: {
1.166 kristaps 3480: const struct roffkv *n;
1.191 schwarze 3481: int i;
1.92 schwarze 3482:
1.164 kristaps 3483: for (n = r->strtab; n; n = n->next)
1.207 schwarze 3484: if (0 == strncmp(name, n->key.p, len) &&
3485: '\0' == n->key.p[(int)len])
1.277 schwarze 3486: return n->val.p;
1.191 schwarze 3487:
3488: for (i = 0; i < PREDEFS_MAX; i++)
3489: if (0 == strncmp(name, predefs[i].name, len) &&
3490: '\0' == predefs[i].name[(int)len])
1.277 schwarze 3491: return predefs[i].str;
1.306 schwarze 3492:
3493: return NULL;
3494: }
3495:
3496: /*
3497: * Check whether *name is the renamed name of a high-level macro.
3498: * Return the standard name, or NULL if it is not.
3499: */
3500: static const char *
3501: roff_getrenn(const struct roff *r, const char *name, size_t len)
3502: {
3503: const struct roffkv *n;
3504:
3505: for (n = r->rentab; n; n = n->next)
3506: if (0 == strncmp(name, n->key.p, len) &&
3507: '\0' == n->key.p[(int)len])
3508: return n->val.p;
1.94 kristaps 3509:
1.277 schwarze 3510: return NULL;
1.92 schwarze 3511: }
3512:
1.94 kristaps 3513: static void
1.167 kristaps 3514: roff_freestr(struct roffkv *r)
1.92 schwarze 3515: {
1.166 kristaps 3516: struct roffkv *n, *nn;
1.92 schwarze 3517:
1.167 kristaps 3518: for (n = r; n; n = nn) {
1.166 kristaps 3519: free(n->key.p);
3520: free(n->val.p);
1.92 schwarze 3521: nn = n->next;
3522: free(n);
3523: }
1.114 kristaps 3524: }
1.266 schwarze 3525:
3526: /* --- accessors and utility functions ------------------------------------ */
1.114 kristaps 3527:
3528: const struct tbl_span *
3529: roff_span(const struct roff *r)
3530: {
1.207 schwarze 3531:
1.277 schwarze 3532: return r->tbl ? tbl_span(r->tbl) : NULL;
1.125 kristaps 3533: }
3534:
3535: const struct eqn *
3536: roff_eqn(const struct roff *r)
3537: {
1.207 schwarze 3538:
1.277 schwarze 3539: return r->last_eqn ? &r->last_eqn->eqn : NULL;
1.164 kristaps 3540: }
3541:
3542: /*
3543: * Duplicate an input string, making the appropriate character
3544: * conversations (as stipulated by `tr') along the way.
3545: * Returns a heap-allocated string with all the replacements made.
3546: */
3547: char *
3548: roff_strdup(const struct roff *r, const char *p)
3549: {
1.166 kristaps 3550: const struct roffkv *cp;
1.164 kristaps 3551: char *res;
3552: const char *pp;
3553: size_t ssz, sz;
3554: enum mandoc_esc esc;
3555:
1.167 kristaps 3556: if (NULL == r->xmbtab && NULL == r->xtab)
1.277 schwarze 3557: return mandoc_strdup(p);
1.164 kristaps 3558: else if ('\0' == *p)
1.277 schwarze 3559: return mandoc_strdup("");
1.164 kristaps 3560:
3561: /*
3562: * Step through each character looking for term matches
3563: * (remember that a `tr' can be invoked with an escape, which is
3564: * a glyph but the escape is multi-character).
3565: * We only do this if the character hash has been initialised
3566: * and the string is >0 length.
3567: */
3568:
3569: res = NULL;
3570: ssz = 0;
3571:
3572: while ('\0' != *p) {
1.289 schwarze 3573: assert((unsigned int)*p < 128);
3574: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.167 kristaps 3575: sz = r->xtab[(int)*p].sz;
3576: res = mandoc_realloc(res, ssz + sz + 1);
3577: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3578: ssz += sz;
3579: p++;
3580: continue;
3581: } else if ('\\' != *p) {
3582: res = mandoc_realloc(res, ssz + 2);
3583: res[ssz++] = *p++;
3584: continue;
3585: }
3586:
1.164 kristaps 3587: /* Search for term matches. */
1.167 kristaps 3588: for (cp = r->xmbtab; cp; cp = cp->next)
1.166 kristaps 3589: if (0 == strncmp(p, cp->key.p, cp->key.sz))
1.164 kristaps 3590: break;
3591:
3592: if (NULL != cp) {
3593: /*
3594: * A match has been found.
3595: * Append the match to the array and move
3596: * forward by its keysize.
3597: */
1.207 schwarze 3598: res = mandoc_realloc(res,
3599: ssz + cp->val.sz + 1);
1.166 kristaps 3600: memcpy(res + ssz, cp->val.p, cp->val.sz);
3601: ssz += cp->val.sz;
3602: p += (int)cp->key.sz;
1.164 kristaps 3603: continue;
3604: }
3605:
1.167 kristaps 3606: /*
3607: * Handle escapes carefully: we need to copy
3608: * over just the escape itself, or else we might
3609: * do replacements within the escape itself.
3610: * Make sure to pass along the bogus string.
3611: */
3612: pp = p++;
3613: esc = mandoc_escape(&p, NULL, NULL);
3614: if (ESCAPE_ERROR == esc) {
3615: sz = strlen(pp);
1.164 kristaps 3616: res = mandoc_realloc(res, ssz + sz + 1);
3617: memcpy(res + ssz, pp, sz);
1.167 kristaps 3618: break;
1.164 kristaps 3619: }
1.207 schwarze 3620: /*
3621: * We bail out on bad escapes.
1.167 kristaps 3622: * No need to warn: we already did so when
3623: * roff_res() was called.
3624: */
3625: sz = (int)(p - pp);
3626: res = mandoc_realloc(res, ssz + sz + 1);
3627: memcpy(res + ssz, pp, sz);
3628: ssz += sz;
1.164 kristaps 3629: }
3630:
3631: res[(int)ssz] = '\0';
1.277 schwarze 3632: return res;
1.227 schwarze 3633: }
3634:
3635: int
3636: roff_getformat(const struct roff *r)
3637: {
3638:
1.277 schwarze 3639: return r->format;
1.174 kristaps 3640: }
3641:
3642: /*
1.207 schwarze 3643: * Find out whether a line is a macro line or not.
1.174 kristaps 3644: * If it is, adjust the current position and return one; if it isn't,
3645: * return zero and don't change the current position.
3646: * If the control character has been set with `.cc', then let that grain
3647: * precedence.
3648: * This is slighly contrary to groff, where using the non-breaking
3649: * control character when `cc' has been invoked will cause the
3650: * non-breaking macro contents to be printed verbatim.
3651: */
3652: int
3653: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
3654: {
3655: int pos;
3656:
3657: pos = *ppos;
3658:
1.303 schwarze 3659: if (r->control != '\0' && cp[pos] == r->control)
1.174 kristaps 3660: pos++;
1.303 schwarze 3661: else if (r->control != '\0')
1.277 schwarze 3662: return 0;
1.174 kristaps 3663: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
3664: pos += 2;
3665: else if ('.' == cp[pos] || '\'' == cp[pos])
3666: pos++;
3667: else
1.277 schwarze 3668: return 0;
1.174 kristaps 3669:
3670: while (' ' == cp[pos] || '\t' == cp[pos])
3671: pos++;
3672:
3673: *ppos = pos;
1.277 schwarze 3674: return 1;
1.74 kristaps 3675: }
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