Annotation of mandoc/roff.c, Revision 1.313
1.313 ! schwarze 1: /* $Id: roff.c,v 1.312 2017/06/14 22:51:25 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 */
1.313 ! schwarze 1169: enum mdoc_os os_e; /* kind of RCS id seen */
1.237 schwarze 1170: int inaml; /* length returned from mandoc_escape() */
1.181 schwarze 1171: int expand_count; /* to avoid infinite loops */
1.206 schwarze 1172: int npos; /* position in numeric expression */
1.218 schwarze 1173: int arg_complete; /* argument not interrupted by eol */
1.303 schwarze 1174: int done; /* no more input available */
1.206 schwarze 1175: char term; /* character terminating the escape */
1.94 kristaps 1176:
1.303 schwarze 1177: /* Search forward for comments. */
1178:
1179: done = 0;
1180: start = buf->buf + pos;
1181: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1182: if (stesc[0] != r->escape || stesc[1] == '\0')
1183: continue;
1184: stesc++;
1185: if (*stesc != '"' && *stesc != '#')
1186: continue;
1.313 ! schwarze 1187:
! 1188: /* Comment found, look for RCS id. */
! 1189:
! 1190: if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
! 1191: os_e = MDOC_OS_OPENBSD;
! 1192: cp += 8;
! 1193: } else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
! 1194: os_e = MDOC_OS_NETBSD;
! 1195: cp += 7;
! 1196: }
! 1197: if (cp != NULL &&
! 1198: isalnum((unsigned char)*cp) == 0 &&
! 1199: strchr(cp, '$') != NULL)
! 1200: r->man->meta.rcsids |= 1 << os_e;
! 1201:
! 1202: /* Handle trailing whitespace. */
! 1203:
1.303 schwarze 1204: cp = strchr(stesc--, '\0') - 1;
1205: if (*cp == '\n') {
1206: done = 1;
1207: cp--;
1208: }
1209: if (*cp == ' ' || *cp == '\t')
1210: mandoc_msg(MANDOCERR_SPACE_EOL, r->parse,
1211: ln, cp - buf->buf, NULL);
1212: while (stesc > start && stesc[-1] == ' ')
1213: stesc--;
1214: *stesc = '\0';
1215: break;
1216: }
1217: if (stesc == start)
1218: return ROFF_CONT;
1219: stesc--;
1220:
1221: /* Notice the end of the input. */
1222:
1223: if (*stesc == '\n') {
1224: *stesc-- = '\0';
1225: done = 1;
1226: }
1227:
1.170 schwarze 1228: expand_count = 0;
1.303 schwarze 1229: while (stesc >= start) {
1.170 schwarze 1230:
1.205 schwarze 1231: /* Search backwards for the next backslash. */
1232:
1.303 schwarze 1233: if (*stesc != r->escape) {
1234: if (*stesc == '\\') {
1235: *stesc = '\0';
1236: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1237: buf->buf, stesc + 1) + 1;
1238: start = nbuf + pos;
1239: stesc = nbuf + (stesc - buf->buf);
1240: free(buf->buf);
1241: buf->buf = nbuf;
1242: }
1243: stesc--;
1.205 schwarze 1244: continue;
1.303 schwarze 1245: }
1.205 schwarze 1246:
1247: /* If it is escaped, skip it. */
1248:
1249: for (cp = stesc - 1; cp >= start; cp--)
1.303 schwarze 1250: if (*cp != r->escape)
1.205 schwarze 1251: break;
1252:
1.238 schwarze 1253: if ((stesc - cp) % 2 == 0) {
1.303 schwarze 1254: while (stesc > cp)
1255: *stesc-- = '\\';
1.205 schwarze 1256: continue;
1.303 schwarze 1257: } else if (stesc[1] != '\0') {
1258: *stesc = '\\';
1259: } else {
1260: *stesc-- = '\0';
1261: if (done)
1262: continue;
1263: else
1264: return ROFF_APPEND;
1.205 schwarze 1265: }
1.108 schwarze 1266:
1.206 schwarze 1267: /* Decide whether to expand or to check only. */
1.108 schwarze 1268:
1.206 schwarze 1269: term = '\0';
1.205 schwarze 1270: cp = stesc + 1;
1.181 schwarze 1271: switch (*cp) {
1.207 schwarze 1272: case '*':
1.181 schwarze 1273: res = NULL;
1274: break;
1.207 schwarze 1275: case 'B':
1276: case 'w':
1.206 schwarze 1277: term = cp[1];
1278: /* FALLTHROUGH */
1.207 schwarze 1279: case 'n':
1.181 schwarze 1280: res = ubuf;
1281: break;
1282: default:
1.237 schwarze 1283: esc = mandoc_escape(&cp, &stnam, &inaml);
1284: if (esc == ESCAPE_ERROR ||
1285: (esc == ESCAPE_SPECIAL &&
1.279 schwarze 1286: mchars_spec2cp(stnam, inaml) < 0))
1.219 schwarze 1287: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.238 schwarze 1288: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1289: "%.*s", (int)(cp - stesc), stesc);
1.303 schwarze 1290: stesc--;
1.205 schwarze 1291: continue;
1.152 kristaps 1292: }
1293:
1.205 schwarze 1294: if (EXPAND_LIMIT < ++expand_count) {
1295: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.238 schwarze 1296: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1297: return ROFF_IGN;
1.205 schwarze 1298: }
1.108 schwarze 1299:
1300: /*
1301: * The third character decides the length
1.181 schwarze 1302: * of the name of the string or register.
1.108 schwarze 1303: * Save a pointer to the name.
1304: */
1305:
1.238 schwarze 1306: if (term == '\0') {
1.206 schwarze 1307: switch (*++cp) {
1.207 schwarze 1308: case '\0':
1.206 schwarze 1309: maxl = 0;
1310: break;
1.207 schwarze 1311: case '(':
1.206 schwarze 1312: cp++;
1313: maxl = 2;
1314: break;
1.207 schwarze 1315: case '[':
1.206 schwarze 1316: cp++;
1317: term = ']';
1318: maxl = 0;
1319: break;
1320: default:
1321: maxl = 1;
1322: break;
1323: }
1324: } else {
1325: cp += 2;
1.94 kristaps 1326: maxl = 0;
1327: }
1.108 schwarze 1328: stnam = cp;
1.94 kristaps 1329:
1.108 schwarze 1330: /* Advance to the end of the name. */
1.94 kristaps 1331:
1.253 schwarze 1332: naml = 0;
1.218 schwarze 1333: arg_complete = 1;
1.253 schwarze 1334: while (maxl == 0 || naml < maxl) {
1.238 schwarze 1335: if (*cp == '\0') {
1.219 schwarze 1336: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 1337: ln, (int)(stesc - buf->buf), stesc);
1.218 schwarze 1338: arg_complete = 0;
1.206 schwarze 1339: break;
1.153 kristaps 1340: }
1.238 schwarze 1341: if (maxl == 0 && *cp == term) {
1.206 schwarze 1342: cp++;
1.253 schwarze 1343: break;
1344: }
1345: if (*cp++ != '\\' || stesc[1] != 'w') {
1346: naml++;
1347: continue;
1348: }
1349: switch (mandoc_escape(&cp, NULL, NULL)) {
1350: case ESCAPE_SPECIAL:
1351: case ESCAPE_UNICODE:
1352: case ESCAPE_NUMBERED:
1353: case ESCAPE_OVERSTRIKE:
1354: naml++;
1355: break;
1356: default:
1.94 kristaps 1357: break;
1.206 schwarze 1358: }
1.94 kristaps 1359: }
1360:
1.108 schwarze 1361: /*
1362: * Retrieve the replacement string; if it is
1363: * undefined, resume searching for escapes.
1364: */
1365:
1.206 schwarze 1366: switch (stesc[1]) {
1.207 schwarze 1367: case '*':
1.218 schwarze 1368: if (arg_complete)
1369: res = roff_getstrn(r, stnam, naml);
1.206 schwarze 1370: break;
1.207 schwarze 1371: case 'B':
1.206 schwarze 1372: npos = 0;
1.218 schwarze 1373: ubuf[0] = arg_complete &&
1.261 schwarze 1374: roff_evalnum(r, ln, stnam, &npos,
1375: NULL, ROFFNUM_SCALE) &&
1.218 schwarze 1376: stnam + npos + 1 == cp ? '1' : '0';
1.206 schwarze 1377: ubuf[1] = '\0';
1378: break;
1.207 schwarze 1379: case 'n':
1.218 schwarze 1380: if (arg_complete)
1381: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1382: roff_getregn(r, stnam, naml));
1383: else
1384: ubuf[0] = '\0';
1.206 schwarze 1385: break;
1.207 schwarze 1386: case 'w':
1.218 schwarze 1387: /* use even incomplete args */
1.208 schwarze 1388: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.206 schwarze 1389: 24 * (int)naml);
1390: break;
1391: }
1.94 kristaps 1392:
1.238 schwarze 1393: if (res == NULL) {
1.219 schwarze 1394: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1395: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1396: "%.*s", (int)naml, stnam);
1.142 kristaps 1397: res = "";
1.246 schwarze 1398: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1399: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1400: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1401: return ROFF_IGN;
1.94 kristaps 1402: }
1403:
1.108 schwarze 1404: /* Replace the escape sequence by the string. */
1405:
1.209 schwarze 1406: *stesc = '\0';
1.238 schwarze 1407: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1408: buf->buf, res, cp) + 1;
1.94 kristaps 1409:
1.205 schwarze 1410: /* Prepare for the next replacement. */
1.94 kristaps 1411:
1.205 schwarze 1412: start = nbuf + pos;
1.238 schwarze 1413: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1414: free(buf->buf);
1415: buf->buf = nbuf;
1.154 kristaps 1416: }
1.277 schwarze 1417: return ROFF_CONT;
1.154 kristaps 1418: }
1419:
1420: /*
1.275 schwarze 1421: * Process text streams.
1.154 kristaps 1422: */
1423: static enum rofferr
1.305 schwarze 1424: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.154 kristaps 1425: {
1426: size_t sz;
1427: const char *start;
1.178 schwarze 1428: char *p;
1429: int isz;
1.154 kristaps 1430: enum mandoc_esc esc;
1431:
1.275 schwarze 1432: /* Spring the input line trap. */
1433:
1434: if (roffit_lines == 1) {
1435: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1436: free(buf->buf);
1437: buf->buf = p;
1438: buf->sz = isz + 1;
1439: *offs = 0;
1440: free(roffit_macro);
1441: roffit_lines = 0;
1.277 schwarze 1442: return ROFF_REPARSE;
1.275 schwarze 1443: } else if (roffit_lines > 1)
1444: --roffit_lines;
1445:
1.305 schwarze 1446: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1447: if (roffce_lines < 1) {
1448: r->man->last = roffce_node;
1449: r->man->next = ROFF_NEXT_SIBLING;
1450: roffce_lines = 0;
1451: roffce_node = NULL;
1452: } else
1453: roffce_lines--;
1454: }
1455:
1.275 schwarze 1456: /* Convert all breakable hyphens into ASCII_HYPH. */
1457:
1.238 schwarze 1458: start = p = buf->buf + pos;
1.154 kristaps 1459:
1.238 schwarze 1460: while (*p != '\0') {
1.154 kristaps 1461: sz = strcspn(p, "-\\");
1462: p += sz;
1463:
1.238 schwarze 1464: if (*p == '\0')
1.159 kristaps 1465: break;
1466:
1.238 schwarze 1467: if (*p == '\\') {
1.154 kristaps 1468: /* Skip over escapes. */
1469: p++;
1.189 schwarze 1470: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.238 schwarze 1471: if (esc == ESCAPE_ERROR)
1.154 kristaps 1472: break;
1.264 schwarze 1473: while (*p == '-')
1474: p++;
1.155 kristaps 1475: continue;
1.159 kristaps 1476: } else if (p == start) {
1.158 kristaps 1477: p++;
1.155 kristaps 1478: continue;
1.158 kristaps 1479: }
1.155 kristaps 1480:
1.171 schwarze 1481: if (isalpha((unsigned char)p[-1]) &&
1482: isalpha((unsigned char)p[1]))
1.155 kristaps 1483: *p = ASCII_HYPH;
1484: p++;
1.94 kristaps 1485: }
1.277 schwarze 1486: return ROFF_CONT;
1.94 kristaps 1487: }
1488:
1.67 kristaps 1489: enum rofferr
1.238 schwarze 1490: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.67 kristaps 1491: {
1.294 schwarze 1492: enum roff_tok t;
1.109 kristaps 1493: enum rofferr e;
1.238 schwarze 1494: int pos; /* parse point */
1.243 schwarze 1495: int spos; /* saved parse point for messages */
1.238 schwarze 1496: int ppos; /* original offset in buf->buf */
1497: int ctl; /* macro line (boolean) */
1498:
1499: ppos = pos = *offs;
1.79 kristaps 1500:
1.230 schwarze 1501: /* Handle in-line equation delimiters. */
1502:
1.236 schwarze 1503: if (r->tbl == NULL &&
1504: r->last_eqn != NULL && r->last_eqn->delim &&
1.230 schwarze 1505: (r->eqn == NULL || r->eqn_inline)) {
1.238 schwarze 1506: e = roff_eqndelim(r, buf, pos);
1.230 schwarze 1507: if (e == ROFF_REPARSE)
1.277 schwarze 1508: return e;
1.230 schwarze 1509: assert(e == ROFF_CONT);
1510: }
1511:
1512: /* Expand some escape sequences. */
1.94 kristaps 1513:
1.238 schwarze 1514: e = roff_res(r, buf, ln, pos);
1.303 schwarze 1515: if (e == ROFF_IGN || e == ROFF_APPEND)
1.277 schwarze 1516: return e;
1.238 schwarze 1517: assert(e == ROFF_CONT);
1.94 kristaps 1518:
1.238 schwarze 1519: ctl = roff_getcontrol(r, buf->buf, &pos);
1.130 kristaps 1520:
1.94 kristaps 1521: /*
1.79 kristaps 1522: * First, if a scope is open and we're not a macro, pass the
1.252 schwarze 1523: * text through the macro's filter.
1524: * Equations process all content themselves.
1525: * Tables process almost all content themselves, but we want
1526: * to warn about macros before passing it there.
1.79 kristaps 1527: */
1.74 kristaps 1528:
1.252 schwarze 1529: if (r->last != NULL && ! ctl) {
1.78 kristaps 1530: t = r->last->tok;
1.238 schwarze 1531: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.294 schwarze 1532: if (e == ROFF_IGN)
1.277 schwarze 1533: return e;
1.294 schwarze 1534: assert(e == ROFF_CONT);
1.182 schwarze 1535: }
1.252 schwarze 1536: if (r->eqn != NULL)
1.277 schwarze 1537: return eqn_read(&r->eqn, ln, buf->buf, ppos, offs);
1.252 schwarze 1538: if (r->tbl != NULL && ( ! ctl || buf->buf[pos] == '\0'))
1.277 schwarze 1539: return tbl_read(r->tbl, ln, buf->buf, ppos);
1.252 schwarze 1540: if ( ! ctl)
1.305 schwarze 1541: return roff_parsetext(r, buf, pos, offs);
1.228 schwarze 1542:
1543: /* Skip empty request lines. */
1544:
1.238 schwarze 1545: if (buf->buf[pos] == '"') {
1.228 schwarze 1546: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1547: ln, pos, NULL);
1.277 schwarze 1548: return ROFF_IGN;
1.238 schwarze 1549: } else if (buf->buf[pos] == '\0')
1.277 schwarze 1550: return ROFF_IGN;
1.67 kristaps 1551:
1.79 kristaps 1552: /*
1553: * If a scope is open, go to the child handler for that macro,
1554: * as it may want to preprocess before doing anything with it.
1.125 kristaps 1555: * Don't do so if an equation is open.
1.79 kristaps 1556: */
1.78 kristaps 1557:
1.79 kristaps 1558: if (r->last) {
1559: t = r->last->tok;
1.277 schwarze 1560: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1561: }
1.78 kristaps 1562:
1.243 schwarze 1563: /* No scope is open. This is a new request or macro. */
1564:
1565: spos = pos;
1566: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1567:
1568: /* Tables ignore most macros. */
1569:
1.308 schwarze 1570: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.309 schwarze 1571: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.243 schwarze 1572: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1573: ln, pos, buf->buf + spos);
1.308 schwarze 1574: if (t != TOKEN_NONE)
1.277 schwarze 1575: return ROFF_IGN;
1.257 schwarze 1576: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1577: pos++;
1.291 schwarze 1578: while (buf->buf[pos] == ' ')
1.257 schwarze 1579: pos++;
1.277 schwarze 1580: return tbl_read(r->tbl, ln, buf->buf, pos);
1.243 schwarze 1581: }
1582:
1.305 schwarze 1583: /* For now, let high level macros abort .ce mode. */
1584:
1585: if (ctl && roffce_node != NULL &&
1586: (t == TOKEN_NONE || t == ROFF_EQ || t == ROFF_TS)) {
1587: r->man->last = roffce_node;
1588: r->man->next = ROFF_NEXT_SIBLING;
1589: roffce_lines = 0;
1590: roffce_node = NULL;
1591: }
1592:
1.79 kristaps 1593: /*
1.243 schwarze 1594: * This is neither a roff request nor a user-defined macro.
1595: * Let the standard macro set parsers handle it.
1.79 kristaps 1596: */
1.67 kristaps 1597:
1.294 schwarze 1598: if (t == TOKEN_NONE)
1.277 schwarze 1599: return ROFF_CONT;
1.243 schwarze 1600:
1601: /* Execute a roff request or a user defined macro. */
1.67 kristaps 1602:
1.296 schwarze 1603: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.74 kristaps 1604: }
1605:
1.117 kristaps 1606: void
1.74 kristaps 1607: roff_endparse(struct roff *r)
1608: {
1609:
1.110 kristaps 1610: if (r->last)
1.221 schwarze 1611: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1612: r->last->line, r->last->col,
1.295 schwarze 1613: roff_name[r->last->tok]);
1.117 kristaps 1614:
1.125 kristaps 1615: if (r->eqn) {
1.221 schwarze 1616: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1617: r->eqn->eqn.ln, r->eqn->eqn.pos, "EQ");
1.151 kristaps 1618: eqn_end(&r->eqn);
1.125 kristaps 1619: }
1620:
1.117 kristaps 1621: if (r->tbl) {
1.221 schwarze 1622: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1623: r->tbl->line, r->tbl->pos, "TS");
1.151 kristaps 1624: tbl_end(&r->tbl);
1.117 kristaps 1625: }
1.67 kristaps 1626: }
1627:
1628: /*
1629: * Parse a roff node's type from the input buffer. This must be in the
1630: * form of ".foo xxx" in the usual way.
1631: */
1.294 schwarze 1632: static enum roff_tok
1.214 schwarze 1633: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.67 kristaps 1634: {
1.214 schwarze 1635: char *cp;
1.106 kristaps 1636: const char *mac;
1637: size_t maclen;
1.294 schwarze 1638: enum roff_tok t;
1.67 kristaps 1639:
1.214 schwarze 1640: cp = buf + *pos;
1641:
1642: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.294 schwarze 1643: return TOKEN_NONE;
1.67 kristaps 1644:
1.214 schwarze 1645: mac = cp;
1646: maclen = roff_getname(r, &cp, ln, ppos);
1.67 kristaps 1647:
1.306 schwarze 1648: t = (r->current_string = roff_getstrn(r, mac, maclen)) ?
1649: ROFF_USERDEF :
1650: (r->current_string = roff_getrenn(r, mac, maclen)) ?
1651: ROFF_RENAMED : roffhash_find(r->reqtab, mac, maclen);
1.67 kristaps 1652:
1.294 schwarze 1653: if (t != TOKEN_NONE)
1.214 schwarze 1654: *pos = cp - buf;
1.67 kristaps 1655:
1.277 schwarze 1656: return t;
1.67 kristaps 1657: }
1658:
1.266 schwarze 1659: /* --- handling of request blocks ----------------------------------------- */
1660:
1.67 kristaps 1661: static enum rofferr
1.76 kristaps 1662: roff_cblock(ROFF_ARGS)
1.67 kristaps 1663: {
1664:
1.79 kristaps 1665: /*
1666: * A block-close `..' should only be invoked as a child of an
1667: * ignore macro, otherwise raise a warning and just ignore it.
1668: */
1669:
1.238 schwarze 1670: if (r->last == NULL) {
1.221 schwarze 1671: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1672: ln, ppos, "..");
1.277 schwarze 1673: return ROFF_IGN;
1.76 kristaps 1674: }
1.67 kristaps 1675:
1.81 kristaps 1676: switch (r->last->tok) {
1.207 schwarze 1677: case ROFF_am:
1.220 schwarze 1678: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.207 schwarze 1679: case ROFF_ami:
1680: case ROFF_de:
1.108 schwarze 1681: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.207 schwarze 1682: case ROFF_dei:
1683: case ROFF_ig:
1.81 kristaps 1684: break;
1685: default:
1.221 schwarze 1686: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1687: ln, ppos, "..");
1.277 schwarze 1688: return ROFF_IGN;
1.76 kristaps 1689: }
1.67 kristaps 1690:
1.238 schwarze 1691: if (buf->buf[pos] != '\0')
1.217 schwarze 1692: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 1693: ".. %s", buf->buf + pos);
1.71 kristaps 1694:
1695: roffnode_pop(r);
1.76 kristaps 1696: roffnode_cleanscope(r);
1.277 schwarze 1697: return ROFF_IGN;
1.71 kristaps 1698:
1.67 kristaps 1699: }
1700:
1.76 kristaps 1701: static void
1702: roffnode_cleanscope(struct roff *r)
1.67 kristaps 1703: {
1704:
1.76 kristaps 1705: while (r->last) {
1.173 schwarze 1706: if (--r->last->endspan != 0)
1.76 kristaps 1707: break;
1708: roffnode_pop(r);
1709: }
1.67 kristaps 1710: }
1711:
1.195 schwarze 1712: static void
1713: roff_ccond(struct roff *r, int ln, int ppos)
1.74 kristaps 1714: {
1715:
1.76 kristaps 1716: if (NULL == r->last) {
1.221 schwarze 1717: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1718: ln, ppos, "\\}");
1.195 schwarze 1719: return;
1.76 kristaps 1720: }
1721:
1.82 kristaps 1722: switch (r->last->tok) {
1.207 schwarze 1723: case ROFF_el:
1724: case ROFF_ie:
1725: case ROFF_if:
1.82 kristaps 1726: break;
1727: default:
1.221 schwarze 1728: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1729: ln, ppos, "\\}");
1.195 schwarze 1730: return;
1.75 kristaps 1731: }
1732:
1.76 kristaps 1733: if (r->last->endspan > -1) {
1.221 schwarze 1734: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1735: ln, ppos, "\\}");
1.195 schwarze 1736: return;
1.76 kristaps 1737: }
1738:
1.75 kristaps 1739: roffnode_pop(r);
1.76 kristaps 1740: roffnode_cleanscope(r);
1.195 schwarze 1741: return;
1.76 kristaps 1742: }
1743:
1744: static enum rofferr
1.80 kristaps 1745: roff_block(ROFF_ARGS)
1.76 kristaps 1746: {
1.220 schwarze 1747: const char *name;
1748: char *iname, *cp;
1.213 schwarze 1749: size_t namesz;
1.106 kristaps 1750:
1.220 schwarze 1751: /* Ignore groff compatibility mode for now. */
1.76 kristaps 1752:
1.238 schwarze 1753: if (tok == ROFF_de1)
1.220 schwarze 1754: tok = ROFF_de;
1.251 schwarze 1755: else if (tok == ROFF_dei1)
1756: tok = ROFF_dei;
1.238 schwarze 1757: else if (tok == ROFF_am1)
1.220 schwarze 1758: tok = ROFF_am;
1.251 schwarze 1759: else if (tok == ROFF_ami1)
1760: tok = ROFF_ami;
1.220 schwarze 1761:
1762: /* Parse the macro name argument. */
1763:
1.238 schwarze 1764: cp = buf->buf + pos;
1765: if (tok == ROFF_ig) {
1.220 schwarze 1766: iname = NULL;
1767: namesz = 0;
1768: } else {
1769: iname = cp;
1770: namesz = roff_getname(r, &cp, ln, ppos);
1771: iname[namesz] = '\0';
1772: }
1.107 kristaps 1773:
1.220 schwarze 1774: /* Resolve the macro name argument if it is indirect. */
1.107 kristaps 1775:
1.238 schwarze 1776: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1777: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.220 schwarze 1778: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1779: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1780: "%.*s", (int)namesz, iname);
1781: namesz = 0;
1782: } else
1783: namesz = strlen(name);
1784: } else
1785: name = iname;
1.107 kristaps 1786:
1.238 schwarze 1787: if (namesz == 0 && tok != ROFF_ig) {
1.220 schwarze 1788: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1.295 schwarze 1789: ln, ppos, roff_name[tok]);
1.277 schwarze 1790: return ROFF_IGN;
1.220 schwarze 1791: }
1.80 kristaps 1792:
1.106 kristaps 1793: roffnode_push(r, tok, name, ln, ppos);
1794:
1795: /*
1796: * At the beginning of a `de' macro, clear the existing string
1797: * with the same name, if there is one. New content will be
1.193 schwarze 1798: * appended from roff_block_text() in multiline mode.
1.106 kristaps 1799: */
1.107 kristaps 1800:
1.311 schwarze 1801: if (tok == ROFF_de || tok == ROFF_dei) {
1.213 schwarze 1802: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.311 schwarze 1803: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1804: }
1.76 kristaps 1805:
1.238 schwarze 1806: if (*cp == '\0')
1.277 schwarze 1807: return ROFF_IGN;
1.78 kristaps 1808:
1.220 schwarze 1809: /* Get the custom end marker. */
1.107 kristaps 1810:
1.220 schwarze 1811: iname = cp;
1.213 schwarze 1812: namesz = roff_getname(r, &cp, ln, ppos);
1.220 schwarze 1813:
1814: /* Resolve the end marker if it is indirect. */
1815:
1.238 schwarze 1816: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1817: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.220 schwarze 1818: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1819: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1820: "%.*s", (int)namesz, iname);
1821: namesz = 0;
1822: } else
1823: namesz = strlen(name);
1824: } else
1825: name = iname;
1826:
1.213 schwarze 1827: if (namesz)
1828: r->last->end = mandoc_strndup(name, namesz);
1.78 kristaps 1829:
1.238 schwarze 1830: if (*cp != '\0')
1.217 schwarze 1831: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1.295 schwarze 1832: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.74 kristaps 1833:
1.277 schwarze 1834: return ROFF_IGN;
1.78 kristaps 1835: }
1836:
1837: static enum rofferr
1.80 kristaps 1838: roff_block_sub(ROFF_ARGS)
1.79 kristaps 1839: {
1.294 schwarze 1840: enum roff_tok t;
1.79 kristaps 1841: int i, j;
1842:
1843: /*
1844: * First check whether a custom macro exists at this level. If
1845: * it does, then check against it. This is some of groff's
1846: * stranger behaviours. If we encountered a custom end-scope
1847: * tag and that tag also happens to be a "real" macro, then we
1848: * need to try interpreting it again as a real macro. If it's
1849: * not, then return ignore. Else continue.
1850: */
1851:
1852: if (r->last->end) {
1.130 kristaps 1853: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.238 schwarze 1854: if (buf->buf[i] != r->last->end[j])
1.79 kristaps 1855: break;
1856:
1.238 schwarze 1857: if (r->last->end[j] == '\0' &&
1858: (buf->buf[i] == '\0' ||
1859: buf->buf[i] == ' ' ||
1860: buf->buf[i] == '\t')) {
1.79 kristaps 1861: roffnode_pop(r);
1862: roffnode_cleanscope(r);
1863:
1.238 schwarze 1864: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.130 kristaps 1865: i++;
1866:
1867: pos = i;
1.238 schwarze 1868: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.294 schwarze 1869: TOKEN_NONE)
1.277 schwarze 1870: return ROFF_RERUN;
1871: return ROFF_IGN;
1.79 kristaps 1872: }
1873: }
1874:
1875: /*
1876: * If we have no custom end-query or lookup failed, then try
1877: * pulling it out of the hashtable.
1878: */
1879:
1.238 schwarze 1880: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.79 kristaps 1881:
1.238 schwarze 1882: if (t != ROFF_cblock) {
1883: if (tok != ROFF_ig)
1884: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.277 schwarze 1885: return ROFF_IGN;
1.106 kristaps 1886: }
1.79 kristaps 1887:
1.277 schwarze 1888: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1889: }
1890:
1891: static enum rofferr
1.80 kristaps 1892: roff_block_text(ROFF_ARGS)
1.78 kristaps 1893: {
1894:
1.238 schwarze 1895: if (tok != ROFF_ig)
1896: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.106 kristaps 1897:
1.277 schwarze 1898: return ROFF_IGN;
1.78 kristaps 1899: }
1900:
1901: static enum rofferr
1.82 kristaps 1902: roff_cond_sub(ROFF_ARGS)
1903: {
1.294 schwarze 1904: enum roff_tok t;
1.139 kristaps 1905: char *ep;
1.198 schwarze 1906: int rr;
1.82 kristaps 1907:
1908: rr = r->last->rule;
1.139 kristaps 1909: roffnode_cleanscope(r);
1.238 schwarze 1910: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.82 kristaps 1911:
1.139 kristaps 1912: /*
1.177 schwarze 1913: * Fully handle known macros when they are structurally
1914: * required or when the conditional evaluated to true.
1.87 kristaps 1915: */
1916:
1.294 schwarze 1917: if (t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT))
1.277 schwarze 1918: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.144 kristaps 1919:
1.196 schwarze 1920: /*
1921: * If `\}' occurs on a macro line without a preceding macro,
1922: * drop the line completely.
1923: */
1924:
1.238 schwarze 1925: ep = buf->buf + pos;
1926: if (ep[0] == '\\' && ep[1] == '}')
1.198 schwarze 1927: rr = 0;
1.196 schwarze 1928:
1.177 schwarze 1929: /* Always check for the closing delimiter `\}'. */
1.144 kristaps 1930:
1.238 schwarze 1931: while ((ep = strchr(ep, '\\')) != NULL) {
1932: if (*(++ep) == '}') {
1.197 schwarze 1933: *ep = '&';
1.238 schwarze 1934: roff_ccond(r, ln, ep - buf->buf - 1);
1.197 schwarze 1935: }
1.247 schwarze 1936: if (*ep != '\0')
1937: ++ep;
1.177 schwarze 1938: }
1.277 schwarze 1939: return rr ? ROFF_CONT : ROFF_IGN;
1.82 kristaps 1940: }
1941:
1942: static enum rofferr
1943: roff_cond_text(ROFF_ARGS)
1.78 kristaps 1944: {
1.140 kristaps 1945: char *ep;
1.198 schwarze 1946: int rr;
1.82 kristaps 1947:
1948: rr = r->last->rule;
1.140 kristaps 1949: roffnode_cleanscope(r);
1.82 kristaps 1950:
1.238 schwarze 1951: ep = buf->buf + pos;
1952: while ((ep = strchr(ep, '\\')) != NULL) {
1953: if (*(++ep) == '}') {
1.197 schwarze 1954: *ep = '&';
1.238 schwarze 1955: roff_ccond(r, ln, ep - buf->buf - 1);
1.197 schwarze 1956: }
1.247 schwarze 1957: if (*ep != '\0')
1958: ++ep;
1.78 kristaps 1959: }
1.277 schwarze 1960: return rr ? ROFF_CONT : ROFF_IGN;
1.74 kristaps 1961: }
1962:
1.266 schwarze 1963: /* --- handling of numeric and conditional expressions -------------------- */
1964:
1.204 schwarze 1965: /*
1966: * Parse a single signed integer number. Stop at the first non-digit.
1967: * If there is at least one digit, return success and advance the
1968: * parse point, else return failure and let the parse point unchanged.
1969: * Ignore overflows, treat them just like the C language.
1970: */
1.184 schwarze 1971: static int
1.261 schwarze 1972: roff_getnum(const char *v, int *pos, int *res, int flags)
1.184 schwarze 1973: {
1.261 schwarze 1974: int myres, scaled, n, p;
1.206 schwarze 1975:
1976: if (NULL == res)
1977: res = &myres;
1.184 schwarze 1978:
1979: p = *pos;
1980: n = v[p] == '-';
1.261 schwarze 1981: if (n || v[p] == '+')
1.184 schwarze 1982: p++;
1983:
1.261 schwarze 1984: if (flags & ROFFNUM_WHITE)
1985: while (isspace((unsigned char)v[p]))
1986: p++;
1987:
1.184 schwarze 1988: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.204 schwarze 1989: *res = 10 * *res + v[p] - '0';
1.184 schwarze 1990: if (p == *pos + n)
1991: return 0;
1992:
1993: if (n)
1994: *res = -*res;
1995:
1.254 schwarze 1996: /* Each number may be followed by one optional scaling unit. */
1997:
1998: switch (v[p]) {
1999: case 'f':
1.261 schwarze 2000: scaled = *res * 65536;
1.254 schwarze 2001: break;
2002: case 'i':
1.261 schwarze 2003: scaled = *res * 240;
1.254 schwarze 2004: break;
2005: case 'c':
1.261 schwarze 2006: scaled = *res * 240 / 2.54;
1.254 schwarze 2007: break;
2008: case 'v':
2009: case 'P':
1.261 schwarze 2010: scaled = *res * 40;
1.254 schwarze 2011: break;
2012: case 'm':
2013: case 'n':
1.261 schwarze 2014: scaled = *res * 24;
1.254 schwarze 2015: break;
2016: case 'p':
1.261 schwarze 2017: scaled = *res * 10 / 3;
1.254 schwarze 2018: break;
2019: case 'u':
1.261 schwarze 2020: scaled = *res;
1.254 schwarze 2021: break;
2022: case 'M':
1.261 schwarze 2023: scaled = *res * 6 / 25;
1.254 schwarze 2024: break;
2025: default:
1.261 schwarze 2026: scaled = *res;
1.254 schwarze 2027: p--;
2028: break;
2029: }
1.261 schwarze 2030: if (flags & ROFFNUM_SCALE)
2031: *res = scaled;
1.254 schwarze 2032:
2033: *pos = p + 1;
1.277 schwarze 2034: return 1;
1.184 schwarze 2035: }
2036:
1.198 schwarze 2037: /*
2038: * Evaluate a string comparison condition.
2039: * The first character is the delimiter.
2040: * Succeed if the string up to its second occurrence
2041: * matches the string up to its third occurence.
2042: * Advance the cursor after the third occurrence
2043: * or lacking that, to the end of the line.
2044: */
2045: static int
2046: roff_evalstrcond(const char *v, int *pos)
2047: {
2048: const char *s1, *s2, *s3;
2049: int match;
2050:
2051: match = 0;
2052: s1 = v + *pos; /* initial delimiter */
2053: s2 = s1 + 1; /* for scanning the first string */
2054: s3 = strchr(s2, *s1); /* for scanning the second string */
2055:
2056: if (NULL == s3) /* found no middle delimiter */
2057: goto out;
2058:
2059: while ('\0' != *++s3) {
2060: if (*s2 != *s3) { /* mismatch */
2061: s3 = strchr(s3, *s1);
2062: break;
2063: }
2064: if (*s3 == *s1) { /* found the final delimiter */
2065: match = 1;
2066: break;
2067: }
2068: s2++;
2069: }
2070:
2071: out:
2072: if (NULL == s3)
2073: s3 = strchr(s2, '\0');
1.242 schwarze 2074: else if (*s3 != '\0')
1.198 schwarze 2075: s3++;
2076: *pos = s3 - v;
1.277 schwarze 2077: return match;
1.198 schwarze 2078: }
2079:
1.204 schwarze 2080: /*
2081: * Evaluate an optionally negated single character, numerical,
2082: * or string condition.
2083: */
1.198 schwarze 2084: static int
1.271 schwarze 2085: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.88 kristaps 2086: {
1.271 schwarze 2087: char *cp, *name;
2088: size_t sz;
1.310 schwarze 2089: int number, savepos, istrue, wanttrue;
1.88 kristaps 2090:
1.198 schwarze 2091: if ('!' == v[*pos]) {
2092: wanttrue = 0;
2093: (*pos)++;
2094: } else
2095: wanttrue = 1;
2096:
1.88 kristaps 2097: switch (v[*pos]) {
1.240 schwarze 2098: case '\0':
1.277 schwarze 2099: return 0;
1.207 schwarze 2100: case 'n':
2101: case 'o':
1.88 kristaps 2102: (*pos)++;
1.277 schwarze 2103: return wanttrue;
1.207 schwarze 2104: case 'c':
2105: case 'e':
2106: case 't':
1.239 schwarze 2107: case 'v':
1.88 kristaps 2108: (*pos)++;
1.277 schwarze 2109: return !wanttrue;
1.310 schwarze 2110: case 'd':
1.271 schwarze 2111: case 'r':
1.310 schwarze 2112: cp = v + *pos + 1;
2113: while (*cp == ' ')
2114: cp++;
2115: name = cp;
2116: sz = roff_getname(r, &cp, ln, cp - v);
2117: istrue = sz && (v[*pos] == 'r' ? roff_hasregn(r, name, sz) :
2118: (roff_getstrn(r, name, sz) != NULL ||
2119: roff_getrenn(r, name, sz) != NULL));
1.271 schwarze 2120: *pos = cp - v;
1.310 schwarze 2121: return istrue == wanttrue;
1.88 kristaps 2122: default:
2123: break;
2124: }
2125:
1.241 schwarze 2126: savepos = *pos;
1.261 schwarze 2127: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.277 schwarze 2128: return (number > 0) == wanttrue;
1.241 schwarze 2129: else if (*pos == savepos)
1.277 schwarze 2130: return roff_evalstrcond(v, pos) == wanttrue;
1.204 schwarze 2131: else
1.277 schwarze 2132: return 0;
1.88 kristaps 2133: }
2134:
1.74 kristaps 2135: static enum rofferr
1.103 kristaps 2136: roff_line_ignore(ROFF_ARGS)
1.89 kristaps 2137: {
1.123 schwarze 2138:
1.277 schwarze 2139: return ROFF_IGN;
1.89 kristaps 2140: }
2141:
1.104 kristaps 2142: static enum rofferr
1.251 schwarze 2143: roff_insec(ROFF_ARGS)
2144: {
2145:
2146: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
1.295 schwarze 2147: ln, ppos, roff_name[tok]);
1.277 schwarze 2148: return ROFF_IGN;
1.251 schwarze 2149: }
2150:
2151: static enum rofferr
2152: roff_unsupp(ROFF_ARGS)
2153: {
2154:
2155: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
1.295 schwarze 2156: ln, ppos, roff_name[tok]);
1.277 schwarze 2157: return ROFF_IGN;
1.251 schwarze 2158: }
2159:
2160: static enum rofferr
1.82 kristaps 2161: roff_cond(ROFF_ARGS)
1.74 kristaps 2162: {
1.173 schwarze 2163:
2164: roffnode_push(r, tok, NULL, ln, ppos);
1.74 kristaps 2165:
1.207 schwarze 2166: /*
1.134 kristaps 2167: * An `.el' has no conditional body: it will consume the value
2168: * of the current rstack entry set in prior `ie' calls or
1.207 schwarze 2169: * defaults to DENY.
1.134 kristaps 2170: *
2171: * If we're not an `el', however, then evaluate the conditional.
2172: */
1.133 kristaps 2173:
1.238 schwarze 2174: r->last->rule = tok == ROFF_el ?
1.207 schwarze 2175: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.238 schwarze 2176: roff_evalcond(r, ln, buf->buf, &pos);
1.77 kristaps 2177:
1.134 kristaps 2178: /*
2179: * An if-else will put the NEGATION of the current evaluated
2180: * conditional into the stack of rules.
2181: */
2182:
1.238 schwarze 2183: if (tok == ROFF_ie) {
1.223 schwarze 2184: if (r->rstackpos + 1 == r->rstacksz) {
2185: r->rstacksz += 16;
2186: r->rstack = mandoc_reallocarray(r->rstack,
2187: r->rstacksz, sizeof(int));
1.134 kristaps 2188: }
1.198 schwarze 2189: r->rstack[++r->rstackpos] = !r->last->rule;
1.82 kristaps 2190: }
1.88 kristaps 2191:
2192: /* If the parent has false as its rule, then so do we. */
2193:
1.198 schwarze 2194: if (r->last->parent && !r->last->parent->rule)
2195: r->last->rule = 0;
1.88 kristaps 2196:
2197: /*
1.173 schwarze 2198: * Determine scope.
2199: * If there is nothing on the line after the conditional,
2200: * not even whitespace, use next-line scope.
1.88 kristaps 2201: */
1.74 kristaps 2202:
1.238 schwarze 2203: if (buf->buf[pos] == '\0') {
1.173 schwarze 2204: r->last->endspan = 2;
2205: goto out;
2206: }
2207:
1.238 schwarze 2208: while (buf->buf[pos] == ' ')
1.173 schwarze 2209: pos++;
2210:
2211: /* An opening brace requests multiline scope. */
1.75 kristaps 2212:
1.238 schwarze 2213: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.75 kristaps 2214: r->last->endspan = -1;
2215: pos += 2;
1.272 schwarze 2216: while (buf->buf[pos] == ' ')
2217: pos++;
1.173 schwarze 2218: goto out;
1.207 schwarze 2219: }
1.74 kristaps 2220:
1.77 kristaps 2221: /*
1.173 schwarze 2222: * Anything else following the conditional causes
2223: * single-line scope. Warn if the scope contains
2224: * nothing but trailing whitespace.
1.77 kristaps 2225: */
2226:
1.238 schwarze 2227: if (buf->buf[pos] == '\0')
1.216 schwarze 2228: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
1.295 schwarze 2229: ln, ppos, roff_name[tok]);
1.77 kristaps 2230:
1.173 schwarze 2231: r->last->endspan = 1;
1.74 kristaps 2232:
1.173 schwarze 2233: out:
1.75 kristaps 2234: *offs = pos;
1.277 schwarze 2235: return ROFF_RERUN;
1.83 schwarze 2236: }
2237:
2238: static enum rofferr
1.92 schwarze 2239: roff_ds(ROFF_ARGS)
2240: {
1.212 schwarze 2241: char *string;
2242: const char *name;
2243: size_t namesz;
1.96 kristaps 2244:
1.251 schwarze 2245: /* Ignore groff compatibility mode for now. */
2246:
2247: if (tok == ROFF_ds1)
2248: tok = ROFF_ds;
2249: else if (tok == ROFF_as1)
2250: tok = ROFF_as;
2251:
1.96 kristaps 2252: /*
1.212 schwarze 2253: * The first word is the name of the string.
2254: * If it is empty or terminated by an escape sequence,
2255: * abort the `ds' request without defining anything.
1.96 kristaps 2256: */
1.92 schwarze 2257:
1.238 schwarze 2258: name = string = buf->buf + pos;
2259: if (*name == '\0')
1.277 schwarze 2260: return ROFF_IGN;
1.92 schwarze 2261:
1.212 schwarze 2262: namesz = roff_getname(r, &string, ln, pos);
1.238 schwarze 2263: if (name[namesz] == '\\')
1.277 schwarze 2264: return ROFF_IGN;
1.212 schwarze 2265:
2266: /* Read past the initial double-quote, if any. */
1.238 schwarze 2267: if (*string == '"')
1.92 schwarze 2268: string++;
2269:
1.96 kristaps 2270: /* The rest is the value. */
1.212 schwarze 2271: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2272: ROFF_as == tok);
1.311 schwarze 2273: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.277 schwarze 2274: return ROFF_IGN;
1.92 schwarze 2275: }
2276:
1.204 schwarze 2277: /*
2278: * Parse a single operator, one or two characters long.
2279: * If the operator is recognized, return success and advance the
2280: * parse point, else return failure and let the parse point unchanged.
2281: */
2282: static int
2283: roff_getop(const char *v, int *pos, char *res)
2284: {
2285:
2286: *res = v[*pos];
2287:
2288: switch (*res) {
1.207 schwarze 2289: case '+':
2290: case '-':
2291: case '*':
2292: case '/':
2293: case '%':
2294: case '&':
2295: case ':':
1.204 schwarze 2296: break;
2297: case '<':
2298: switch (v[*pos + 1]) {
1.207 schwarze 2299: case '=':
1.204 schwarze 2300: *res = 'l';
2301: (*pos)++;
2302: break;
1.207 schwarze 2303: case '>':
1.204 schwarze 2304: *res = '!';
2305: (*pos)++;
2306: break;
1.207 schwarze 2307: case '?':
1.204 schwarze 2308: *res = 'i';
2309: (*pos)++;
2310: break;
2311: default:
2312: break;
2313: }
2314: break;
2315: case '>':
2316: switch (v[*pos + 1]) {
1.207 schwarze 2317: case '=':
1.204 schwarze 2318: *res = 'g';
2319: (*pos)++;
2320: break;
1.207 schwarze 2321: case '?':
1.204 schwarze 2322: *res = 'a';
2323: (*pos)++;
2324: break;
2325: default:
2326: break;
2327: }
2328: break;
2329: case '=':
2330: if ('=' == v[*pos + 1])
2331: (*pos)++;
2332: break;
2333: default:
1.277 schwarze 2334: return 0;
1.204 schwarze 2335: }
2336: (*pos)++;
2337:
1.277 schwarze 2338: return *res;
1.204 schwarze 2339: }
2340:
2341: /*
2342: * Evaluate either a parenthesized numeric expression
2343: * or a single signed integer number.
2344: */
2345: static int
1.235 schwarze 2346: roff_evalpar(struct roff *r, int ln,
1.261 schwarze 2347: const char *v, int *pos, int *res, int flags)
1.204 schwarze 2348: {
2349:
2350: if ('(' != v[*pos])
1.277 schwarze 2351: return roff_getnum(v, pos, res, flags);
1.204 schwarze 2352:
2353: (*pos)++;
1.261 schwarze 2354: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.277 schwarze 2355: return 0;
1.204 schwarze 2356:
1.206 schwarze 2357: /*
2358: * Omission of the closing parenthesis
2359: * is an error in validation mode,
2360: * but ignored in evaluation mode.
2361: */
2362:
1.204 schwarze 2363: if (')' == v[*pos])
2364: (*pos)++;
1.206 schwarze 2365: else if (NULL == res)
1.277 schwarze 2366: return 0;
1.204 schwarze 2367:
1.277 schwarze 2368: return 1;
1.204 schwarze 2369: }
2370:
2371: /*
2372: * Evaluate a complete numeric expression.
2373: * Proceed left to right, there is no concept of precedence.
2374: */
2375: static int
1.235 schwarze 2376: roff_evalnum(struct roff *r, int ln, const char *v,
1.261 schwarze 2377: int *pos, int *res, int flags)
1.204 schwarze 2378: {
2379: int mypos, operand2;
2380: char operator;
2381:
2382: if (NULL == pos) {
2383: mypos = 0;
2384: pos = &mypos;
2385: }
2386:
1.261 schwarze 2387: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2388: while (isspace((unsigned char)v[*pos]))
2389: (*pos)++;
2390:
1.261 schwarze 2391: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.277 schwarze 2392: return 0;
1.204 schwarze 2393:
2394: while (1) {
1.261 schwarze 2395: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2396: while (isspace((unsigned char)v[*pos]))
2397: (*pos)++;
2398:
2399: if ( ! roff_getop(v, pos, &operator))
2400: break;
2401:
1.261 schwarze 2402: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2403: while (isspace((unsigned char)v[*pos]))
2404: (*pos)++;
2405:
1.261 schwarze 2406: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.277 schwarze 2407: return 0;
1.204 schwarze 2408:
1.261 schwarze 2409: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2410: while (isspace((unsigned char)v[*pos]))
2411: (*pos)++;
1.206 schwarze 2412:
2413: if (NULL == res)
2414: continue;
1.204 schwarze 2415:
2416: switch (operator) {
1.207 schwarze 2417: case '+':
1.204 schwarze 2418: *res += operand2;
2419: break;
1.207 schwarze 2420: case '-':
1.204 schwarze 2421: *res -= operand2;
2422: break;
1.207 schwarze 2423: case '*':
1.204 schwarze 2424: *res *= operand2;
2425: break;
1.207 schwarze 2426: case '/':
1.244 schwarze 2427: if (operand2 == 0) {
1.235 schwarze 2428: mandoc_msg(MANDOCERR_DIVZERO,
1.234 kristaps 2429: r->parse, ln, *pos, v);
2430: *res = 0;
2431: break;
2432: }
1.204 schwarze 2433: *res /= operand2;
2434: break;
1.207 schwarze 2435: case '%':
1.244 schwarze 2436: if (operand2 == 0) {
2437: mandoc_msg(MANDOCERR_DIVZERO,
2438: r->parse, ln, *pos, v);
2439: *res = 0;
2440: break;
2441: }
1.204 schwarze 2442: *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 'l':
1.204 schwarze 2451: *res = *res <= operand2;
2452: break;
1.207 schwarze 2453: case 'g':
1.204 schwarze 2454: *res = *res >= operand2;
2455: break;
1.207 schwarze 2456: case '=':
1.204 schwarze 2457: *res = *res == operand2;
2458: break;
1.207 schwarze 2459: case '!':
1.204 schwarze 2460: *res = *res != operand2;
2461: break;
1.207 schwarze 2462: case '&':
1.204 schwarze 2463: *res = *res && operand2;
2464: break;
1.207 schwarze 2465: case ':':
1.204 schwarze 2466: *res = *res || operand2;
2467: break;
1.207 schwarze 2468: case 'i':
1.204 schwarze 2469: if (operand2 < *res)
2470: *res = operand2;
2471: break;
1.207 schwarze 2472: case 'a':
1.204 schwarze 2473: if (operand2 > *res)
2474: *res = operand2;
2475: break;
2476: default:
2477: abort();
2478: }
2479: }
1.277 schwarze 2480: return 1;
1.204 schwarze 2481: }
2482:
1.266 schwarze 2483: /* --- register management ------------------------------------------------ */
2484:
1.180 schwarze 2485: void
1.187 schwarze 2486: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.147 kristaps 2487: {
1.180 schwarze 2488: struct roffreg *reg;
2489:
2490: /* Search for an existing register with the same name. */
2491: reg = r->regtab;
2492:
2493: while (reg && strcmp(name, reg->key.p))
2494: reg = reg->next;
1.147 kristaps 2495:
1.180 schwarze 2496: if (NULL == reg) {
2497: /* Create a new register. */
2498: reg = mandoc_malloc(sizeof(struct roffreg));
2499: reg->key.p = mandoc_strdup(name);
2500: reg->key.sz = strlen(name);
1.187 schwarze 2501: reg->val = 0;
1.180 schwarze 2502: reg->next = r->regtab;
2503: r->regtab = reg;
2504: }
2505:
1.187 schwarze 2506: if ('+' == sign)
2507: reg->val += val;
2508: else if ('-' == sign)
2509: reg->val -= val;
2510: else
2511: reg->val = val;
1.147 kristaps 2512: }
2513:
1.192 schwarze 2514: /*
2515: * Handle some predefined read-only number registers.
2516: * For now, return -1 if the requested register is not predefined;
2517: * in case a predefined read-only register having the value -1
2518: * were to turn up, another special value would have to be chosen.
2519: */
2520: static int
1.273 schwarze 2521: roff_getregro(const struct roff *r, const char *name)
1.192 schwarze 2522: {
2523:
2524: switch (*name) {
1.273 schwarze 2525: case '$': /* Number of arguments of the last macro evaluated. */
1.277 schwarze 2526: return r->argc;
1.207 schwarze 2527: case 'A': /* ASCII approximation mode is always off. */
1.277 schwarze 2528: return 0;
1.207 schwarze 2529: case 'g': /* Groff compatibility mode is always on. */
1.277 schwarze 2530: return 1;
1.207 schwarze 2531: case 'H': /* Fixed horizontal resolution. */
1.277 schwarze 2532: return 24;
1.207 schwarze 2533: case 'j': /* Always adjust left margin only. */
1.277 schwarze 2534: return 0;
1.207 schwarze 2535: case 'T': /* Some output device is always defined. */
1.277 schwarze 2536: return 1;
1.207 schwarze 2537: case 'V': /* Fixed vertical resolution. */
1.277 schwarze 2538: return 40;
1.192 schwarze 2539: default:
1.277 schwarze 2540: return -1;
1.192 schwarze 2541: }
2542: }
2543:
1.181 schwarze 2544: int
1.180 schwarze 2545: roff_getreg(const struct roff *r, const char *name)
1.147 kristaps 2546: {
1.180 schwarze 2547: struct roffreg *reg;
1.192 schwarze 2548: int val;
2549:
2550: if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) {
1.273 schwarze 2551: val = roff_getregro(r, name + 1);
1.192 schwarze 2552: if (-1 != val)
1.277 schwarze 2553: return val;
1.192 schwarze 2554: }
1.180 schwarze 2555:
2556: for (reg = r->regtab; reg; reg = reg->next)
2557: if (0 == strcmp(name, reg->key.p))
1.277 schwarze 2558: return reg->val;
1.181 schwarze 2559:
1.277 schwarze 2560: return 0;
1.181 schwarze 2561: }
2562:
2563: static int
2564: roff_getregn(const struct roff *r, const char *name, size_t len)
2565: {
2566: struct roffreg *reg;
1.192 schwarze 2567: int val;
2568:
2569: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2570: val = roff_getregro(r, name + 1);
1.192 schwarze 2571: if (-1 != val)
1.277 schwarze 2572: return val;
1.192 schwarze 2573: }
1.181 schwarze 2574:
2575: for (reg = r->regtab; reg; reg = reg->next)
2576: if (len == reg->key.sz &&
2577: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2578: return reg->val;
1.271 schwarze 2579:
1.277 schwarze 2580: return 0;
1.271 schwarze 2581: }
2582:
2583: static int
2584: roff_hasregn(const struct roff *r, const char *name, size_t len)
2585: {
2586: struct roffreg *reg;
2587: int val;
2588:
2589: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2590: val = roff_getregro(r, name + 1);
1.271 schwarze 2591: if (-1 != val)
1.277 schwarze 2592: return 1;
1.271 schwarze 2593: }
2594:
2595: for (reg = r->regtab; reg; reg = reg->next)
2596: if (len == reg->key.sz &&
2597: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2598: return 1;
1.147 kristaps 2599:
1.277 schwarze 2600: return 0;
1.147 kristaps 2601: }
2602:
1.180 schwarze 2603: static void
2604: roff_freereg(struct roffreg *reg)
1.147 kristaps 2605: {
1.180 schwarze 2606: struct roffreg *old_reg;
1.147 kristaps 2607:
1.180 schwarze 2608: while (NULL != reg) {
2609: free(reg->key.p);
2610: old_reg = reg;
2611: reg = reg->next;
2612: free(old_reg);
2613: }
1.147 kristaps 2614: }
1.92 schwarze 2615:
2616: static enum rofferr
1.89 kristaps 2617: roff_nr(ROFF_ARGS)
1.83 schwarze 2618: {
1.212 schwarze 2619: char *key, *val;
2620: size_t keysz;
1.138 kristaps 2621: int iv;
1.187 schwarze 2622: char sign;
1.89 kristaps 2623:
1.238 schwarze 2624: key = val = buf->buf + pos;
2625: if (*key == '\0')
1.277 schwarze 2626: return ROFF_IGN;
1.212 schwarze 2627:
2628: keysz = roff_getname(r, &val, ln, pos);
1.238 schwarze 2629: if (key[keysz] == '\\')
1.277 schwarze 2630: return ROFF_IGN;
1.212 schwarze 2631: key[keysz] = '\0';
1.89 kristaps 2632:
1.187 schwarze 2633: sign = *val;
1.238 schwarze 2634: if (sign == '+' || sign == '-')
1.187 schwarze 2635: val++;
2636:
1.261 schwarze 2637: if (roff_evalnum(r, ln, val, NULL, &iv, ROFFNUM_SCALE))
1.204 schwarze 2638: roff_setreg(r, key, iv, sign);
1.109 kristaps 2639:
1.277 schwarze 2640: return ROFF_IGN;
1.203 schwarze 2641: }
2642:
2643: static enum rofferr
2644: roff_rr(ROFF_ARGS)
2645: {
2646: struct roffreg *reg, **prev;
1.212 schwarze 2647: char *name, *cp;
2648: size_t namesz;
1.203 schwarze 2649:
1.238 schwarze 2650: name = cp = buf->buf + pos;
2651: if (*name == '\0')
1.277 schwarze 2652: return ROFF_IGN;
1.212 schwarze 2653: namesz = roff_getname(r, &cp, ln, pos);
2654: name[namesz] = '\0';
1.203 schwarze 2655:
2656: prev = &r->regtab;
2657: while (1) {
2658: reg = *prev;
1.238 schwarze 2659: if (reg == NULL || !strcmp(name, reg->key.p))
1.203 schwarze 2660: break;
2661: prev = ®->next;
2662: }
1.238 schwarze 2663: if (reg != NULL) {
1.203 schwarze 2664: *prev = reg->next;
2665: free(reg->key.p);
2666: free(reg);
2667: }
1.277 schwarze 2668: return ROFF_IGN;
1.122 schwarze 2669: }
2670:
1.266 schwarze 2671: /* --- handler functions for roff requests -------------------------------- */
2672:
1.122 schwarze 2673: static enum rofferr
2674: roff_rm(ROFF_ARGS)
2675: {
2676: const char *name;
2677: char *cp;
1.212 schwarze 2678: size_t namesz;
1.122 schwarze 2679:
1.238 schwarze 2680: cp = buf->buf + pos;
2681: while (*cp != '\0') {
1.212 schwarze 2682: name = cp;
1.238 schwarze 2683: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.212 schwarze 2684: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.311 schwarze 2685: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.238 schwarze 2686: if (name[namesz] == '\\')
1.212 schwarze 2687: break;
1.122 schwarze 2688: }
1.277 schwarze 2689: return ROFF_IGN;
1.178 schwarze 2690: }
2691:
2692: static enum rofferr
2693: roff_it(ROFF_ARGS)
2694: {
2695: int iv;
2696:
2697: /* Parse the number of lines. */
1.261 schwarze 2698:
2699: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.222 schwarze 2700: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.238 schwarze 2701: ln, ppos, buf->buf + 1);
1.277 schwarze 2702: return ROFF_IGN;
1.178 schwarze 2703: }
2704:
1.262 schwarze 2705: while (isspace((unsigned char)buf->buf[pos]))
2706: pos++;
2707:
2708: /*
2709: * Arm the input line trap.
2710: * Special-casing "an-trap" is an ugly workaround to cope
2711: * with DocBook stupidly fiddling with man(7) internals.
2712: */
1.261 schwarze 2713:
1.178 schwarze 2714: roffit_lines = iv;
1.262 schwarze 2715: roffit_macro = mandoc_strdup(iv != 1 ||
2716: strcmp(buf->buf + pos, "an-trap") ?
2717: buf->buf + pos : "br");
1.277 schwarze 2718: return ROFF_IGN;
1.175 schwarze 2719: }
2720:
2721: static enum rofferr
2722: roff_Dd(ROFF_ARGS)
2723: {
2724: const char *const *cp;
2725:
1.227 schwarze 2726: if ((r->options & (MPARSE_MDOC | MPARSE_QUICK)) == 0)
1.175 schwarze 2727: for (cp = __mdoc_reserved; *cp; cp++)
2728: roff_setstr(r, *cp, NULL, 0);
2729:
1.227 schwarze 2730: if (r->format == 0)
2731: r->format = MPARSE_MDOC;
2732:
1.277 schwarze 2733: return ROFF_CONT;
1.175 schwarze 2734: }
2735:
2736: static enum rofferr
2737: roff_TH(ROFF_ARGS)
2738: {
2739: const char *const *cp;
2740:
1.227 schwarze 2741: if ((r->options & MPARSE_QUICK) == 0)
1.175 schwarze 2742: for (cp = __man_reserved; *cp; cp++)
2743: roff_setstr(r, *cp, NULL, 0);
2744:
1.227 schwarze 2745: if (r->format == 0)
2746: r->format = MPARSE_MAN;
2747:
1.277 schwarze 2748: return ROFF_CONT;
1.109 kristaps 2749: }
2750:
2751: static enum rofferr
2752: roff_TE(ROFF_ARGS)
2753: {
2754:
2755: if (NULL == r->tbl)
1.221 schwarze 2756: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2757: ln, ppos, "TE");
1.258 schwarze 2758: else if ( ! tbl_end(&r->tbl)) {
2759: free(buf->buf);
2760: buf->buf = mandoc_strdup(".sp");
2761: buf->sz = 4;
1.277 schwarze 2762: return ROFF_REPARSE;
1.258 schwarze 2763: }
1.277 schwarze 2764: return ROFF_IGN;
1.112 kristaps 2765: }
2766:
2767: static enum rofferr
2768: roff_T_(ROFF_ARGS)
2769: {
2770:
2771: if (NULL == r->tbl)
1.221 schwarze 2772: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2773: ln, ppos, "T&");
1.112 kristaps 2774: else
1.296 schwarze 2775: tbl_restart(ln, ppos, r->tbl);
1.112 kristaps 2776:
1.277 schwarze 2777: return ROFF_IGN;
1.109 kristaps 2778: }
2779:
1.230 schwarze 2780: /*
2781: * Handle in-line equation delimiters.
2782: */
2783: static enum rofferr
1.238 schwarze 2784: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.151 kristaps 2785: {
1.233 schwarze 2786: char *cp1, *cp2;
2787: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.151 kristaps 2788:
1.230 schwarze 2789: /*
2790: * Outside equations, look for an opening delimiter.
2791: * If we are inside an equation, we already know it is
2792: * in-line, or this function wouldn't have been called;
2793: * so look for a closing delimiter.
2794: */
2795:
1.238 schwarze 2796: cp1 = buf->buf + pos;
1.230 schwarze 2797: cp2 = strchr(cp1, r->eqn == NULL ?
2798: r->last_eqn->odelim : r->last_eqn->cdelim);
2799: if (cp2 == NULL)
1.277 schwarze 2800: return ROFF_CONT;
1.230 schwarze 2801:
1.233 schwarze 2802: *cp2++ = '\0';
2803: bef_pr = bef_nl = aft_nl = aft_pr = "";
2804:
2805: /* Handle preceding text, protecting whitespace. */
2806:
1.238 schwarze 2807: if (*buf->buf != '\0') {
1.233 schwarze 2808: if (r->eqn == NULL)
2809: bef_pr = "\\&";
2810: bef_nl = "\n";
2811: }
2812:
2813: /*
2814: * Prepare replacing the delimiter with an equation macro
2815: * and drop leading white space from the equation.
2816: */
1.230 schwarze 2817:
1.233 schwarze 2818: if (r->eqn == NULL) {
2819: while (*cp2 == ' ')
2820: cp2++;
2821: mac = ".EQ";
2822: } else
2823: mac = ".EN";
2824:
2825: /* Handle following text, protecting whitespace. */
2826:
2827: if (*cp2 != '\0') {
2828: aft_nl = "\n";
2829: if (r->eqn != NULL)
2830: aft_pr = "\\&";
2831: }
2832:
2833: /* Do the actual replacement. */
2834:
1.238 schwarze 2835: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.233 schwarze 2836: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.238 schwarze 2837: free(buf->buf);
2838: buf->buf = cp1;
1.230 schwarze 2839:
2840: /* Toggle the in-line state of the eqn subsystem. */
2841:
2842: r->eqn_inline = r->eqn == NULL;
1.277 schwarze 2843: return ROFF_REPARSE;
1.151 kristaps 2844: }
2845:
1.235 schwarze 2846: static enum rofferr
2847: roff_EQ(ROFF_ARGS)
1.125 kristaps 2848: {
1.151 kristaps 2849: struct eqn_node *e;
1.125 kristaps 2850:
1.238 schwarze 2851: assert(r->eqn == NULL);
1.235 schwarze 2852: e = eqn_alloc(ppos, ln, r->parse);
1.125 kristaps 2853:
1.230 schwarze 2854: if (r->last_eqn) {
1.125 kristaps 2855: r->last_eqn->next = e;
1.230 schwarze 2856: e->delim = r->last_eqn->delim;
2857: e->odelim = r->last_eqn->odelim;
2858: e->cdelim = r->last_eqn->cdelim;
2859: } else
1.125 kristaps 2860: r->first_eqn = r->last_eqn = e;
2861:
2862: r->eqn = r->last_eqn = e;
1.151 kristaps 2863:
1.238 schwarze 2864: if (buf->buf[pos] != '\0')
1.235 schwarze 2865: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 2866: ".EQ %s", buf->buf + pos);
1.151 kristaps 2867:
1.277 schwarze 2868: return ROFF_IGN;
1.125 kristaps 2869: }
2870:
2871: static enum rofferr
2872: roff_EN(ROFF_ARGS)
2873: {
2874:
1.221 schwarze 2875: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
1.277 schwarze 2876: return ROFF_IGN;
1.125 kristaps 2877: }
2878:
2879: static enum rofferr
1.109 kristaps 2880: roff_TS(ROFF_ARGS)
2881: {
1.176 schwarze 2882: struct tbl_node *tbl;
1.89 kristaps 2883:
1.115 kristaps 2884: if (r->tbl) {
1.221 schwarze 2885: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
2886: ln, ppos, "TS breaks TS");
1.151 kristaps 2887: tbl_end(&r->tbl);
1.115 kristaps 2888: }
1.83 schwarze 2889:
1.176 schwarze 2890: tbl = tbl_alloc(ppos, ln, r->parse);
1.113 kristaps 2891:
2892: if (r->last_tbl)
1.176 schwarze 2893: r->last_tbl->next = tbl;
1.113 kristaps 2894: else
1.176 schwarze 2895: r->first_tbl = r->last_tbl = tbl;
1.113 kristaps 2896:
1.176 schwarze 2897: r->tbl = r->last_tbl = tbl;
1.297 schwarze 2898: return ROFF_IGN;
2899: }
2900:
2901: static enum rofferr
2902: roff_onearg(ROFF_ARGS)
2903: {
2904: struct roff_node *n;
2905: char *cp;
1.305 schwarze 2906: int npos;
1.297 schwarze 2907:
1.302 schwarze 2908: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
2909: (tok == ROFF_sp || tok == ROFF_ti))
2910: man_breakscope(r->man, tok);
2911:
1.309 schwarze 2912: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.305 schwarze 2913: r->man->last = roffce_node;
2914: r->man->next = ROFF_NEXT_SIBLING;
2915: }
2916:
1.297 schwarze 2917: roff_elem_alloc(r->man, ln, ppos, tok);
2918: n = r->man->last;
2919:
2920: cp = buf->buf + pos;
2921: if (*cp != '\0') {
2922: while (*cp != '\0' && *cp != ' ')
2923: cp++;
2924: while (*cp == ' ')
2925: *cp++ = '\0';
2926: if (*cp != '\0')
2927: mandoc_vmsg(MANDOCERR_ARG_EXCESS,
2928: r->parse, ln, cp - buf->buf,
2929: "%s ... %s", roff_name[tok], cp);
2930: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.300 schwarze 2931: }
2932:
1.309 schwarze 2933: if (tok == ROFF_ce || tok == ROFF_rj) {
2934: if (r->man->last->type == ROFFT_ELEM) {
1.305 schwarze 2935: roff_word_alloc(r->man, ln, pos, "1");
2936: r->man->last->flags |= NODE_NOSRC;
2937: }
2938: npos = 0;
2939: if (roff_evalnum(r, ln, r->man->last->string, &npos,
2940: &roffce_lines, 0) == 0) {
2941: mandoc_vmsg(MANDOCERR_CE_NONUM,
2942: r->parse, ln, pos, "ce %s", buf->buf + pos);
2943: roffce_lines = 1;
2944: }
2945: if (roffce_lines < 1) {
2946: r->man->last = r->man->last->parent;
2947: roffce_node = NULL;
2948: roffce_lines = 0;
2949: } else
2950: roffce_node = r->man->last->parent;
2951: } else {
2952: n->flags |= NODE_VALID | NODE_ENDED;
2953: r->man->last = n;
2954: }
2955: n->flags |= NODE_LINE;
1.300 schwarze 2956: r->man->next = ROFF_NEXT_SIBLING;
2957: return ROFF_IGN;
2958: }
2959:
2960: static enum rofferr
2961: roff_manyarg(ROFF_ARGS)
2962: {
2963: struct roff_node *n;
2964: char *sp, *ep;
2965:
2966: roff_elem_alloc(r->man, ln, ppos, tok);
2967: n = r->man->last;
2968:
2969: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
2970: while (*ep != '\0' && *ep != ' ')
2971: ep++;
2972: while (*ep == ' ')
2973: *ep++ = '\0';
2974: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.297 schwarze 2975: }
2976:
2977: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
2978: r->man->last = n;
2979: r->man->next = ROFF_NEXT_SIBLING;
1.277 schwarze 2980: return ROFF_IGN;
1.251 schwarze 2981: }
2982:
2983: static enum rofferr
1.311 schwarze 2984: roff_als(ROFF_ARGS)
2985: {
2986: char *oldn, *newn, *end, *value;
2987: size_t oldsz, newsz, valsz;
2988:
2989: newn = oldn = buf->buf + pos;
2990: if (*newn == '\0')
2991: return ROFF_IGN;
2992:
2993: newsz = roff_getname(r, &oldn, ln, pos);
2994: if (newn[newsz] == '\\' || *oldn == '\0')
2995: return ROFF_IGN;
2996:
2997: end = oldn;
2998: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
2999: if (oldsz == 0)
3000: return ROFF_IGN;
3001:
3002: valsz = mandoc_asprintf(&value, ".%.*s \\$*\n", (int)oldsz, oldn);
3003: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3004: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3005: free(value);
3006: return ROFF_IGN;
3007: }
3008:
3009: static enum rofferr
1.296 schwarze 3010: roff_br(ROFF_ARGS)
1.251 schwarze 3011: {
1.302 schwarze 3012: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3013: man_breakscope(r->man, ROFF_br);
1.296 schwarze 3014: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
3015: if (buf->buf[pos] != '\0')
3016: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
3017: "%s %s", roff_name[tok], buf->buf + pos);
3018: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3019: r->man->next = ROFF_NEXT_SIBLING;
3020: return ROFF_IGN;
1.92 schwarze 3021: }
3022:
1.105 kristaps 3023: static enum rofferr
1.174 kristaps 3024: roff_cc(ROFF_ARGS)
3025: {
3026: const char *p;
3027:
1.238 schwarze 3028: p = buf->buf + pos;
1.174 kristaps 3029:
1.238 schwarze 3030: if (*p == '\0' || (r->control = *p++) == '.')
1.303 schwarze 3031: r->control = '\0';
1.174 kristaps 3032:
1.238 schwarze 3033: if (*p != '\0')
1.260 schwarze 3034: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3035: ln, p - buf->buf, "cc ... %s", p);
1.174 kristaps 3036:
1.277 schwarze 3037: return ROFF_IGN;
1.174 kristaps 3038: }
3039:
3040: static enum rofferr
1.303 schwarze 3041: roff_ec(ROFF_ARGS)
3042: {
3043: const char *p;
3044:
3045: p = buf->buf + pos;
3046: if (*p == '\0')
3047: r->escape = '\\';
3048: else {
3049: r->escape = *p;
3050: if (*++p != '\0')
3051: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3052: ln, p - buf->buf, "ec ... %s", p);
3053: }
3054: return ROFF_IGN;
3055: }
3056:
3057: static enum rofferr
3058: roff_eo(ROFF_ARGS)
3059: {
3060: r->escape = '\0';
3061: if (buf->buf[pos] != '\0')
3062: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse,
3063: ln, pos, "eo %s", buf->buf + pos);
3064: return ROFF_IGN;
3065: }
3066:
3067: static enum rofferr
1.164 kristaps 3068: roff_tr(ROFF_ARGS)
3069: {
3070: const char *p, *first, *second;
3071: size_t fsz, ssz;
3072: enum mandoc_esc esc;
3073:
1.238 schwarze 3074: p = buf->buf + pos;
1.164 kristaps 3075:
1.238 schwarze 3076: if (*p == '\0') {
1.260 schwarze 3077: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.277 schwarze 3078: return ROFF_IGN;
1.164 kristaps 3079: }
3080:
1.238 schwarze 3081: while (*p != '\0') {
1.164 kristaps 3082: fsz = ssz = 1;
3083:
3084: first = p++;
1.238 schwarze 3085: if (*first == '\\') {
1.164 kristaps 3086: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3087: if (esc == ESCAPE_ERROR) {
1.219 schwarze 3088: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 3089: ln, (int)(p - buf->buf), first);
1.277 schwarze 3090: return ROFF_IGN;
1.164 kristaps 3091: }
3092: fsz = (size_t)(p - first);
3093: }
3094:
3095: second = p++;
1.238 schwarze 3096: if (*second == '\\') {
1.164 kristaps 3097: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3098: if (esc == ESCAPE_ERROR) {
1.219 schwarze 3099: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 3100: ln, (int)(p - buf->buf), second);
1.277 schwarze 3101: return ROFF_IGN;
1.164 kristaps 3102: }
3103: ssz = (size_t)(p - second);
1.238 schwarze 3104: } else if (*second == '\0') {
1.260 schwarze 3105: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
3106: ln, first - buf->buf, "tr %s", first);
1.164 kristaps 3107: second = " ";
1.165 kristaps 3108: p--;
1.164 kristaps 3109: }
3110:
1.167 kristaps 3111: if (fsz > 1) {
1.207 schwarze 3112: roff_setstrn(&r->xmbtab, first, fsz,
3113: second, ssz, 0);
1.167 kristaps 3114: continue;
3115: }
3116:
1.238 schwarze 3117: if (r->xtab == NULL)
1.207 schwarze 3118: r->xtab = mandoc_calloc(128,
3119: sizeof(struct roffstr));
1.167 kristaps 3120:
3121: free(r->xtab[(int)*first].p);
3122: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3123: r->xtab[(int)*first].sz = ssz;
1.164 kristaps 3124: }
3125:
1.277 schwarze 3126: return ROFF_IGN;
1.164 kristaps 3127: }
3128:
3129: static enum rofferr
1.306 schwarze 3130: roff_rn(ROFF_ARGS)
3131: {
3132: const char *value;
3133: char *oldn, *newn, *end;
3134: size_t oldsz, newsz;
3135:
3136: oldn = newn = buf->buf + pos;
3137: if (*oldn == '\0')
3138: return ROFF_IGN;
3139:
3140: oldsz = roff_getname(r, &newn, ln, pos);
3141: if (oldn[oldsz] == '\\' || *newn == '\0')
3142: return ROFF_IGN;
3143:
3144: end = newn;
3145: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3146: if (newsz == 0)
3147: return ROFF_IGN;
3148:
3149: /*
3150: * Rename a user-defined macro bearing the old name,
3151: * overriding an existing renamed high-level macro
3152: * bearing the new name, if that exists.
3153: */
3154:
3155: if ((value = roff_getstrn(r, oldn, oldsz)) != NULL) {
3156: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3157: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3158: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3159: return ROFF_IGN;
3160: }
3161:
3162: /*
3163: * Rename a high-level macro bearing the old name,
3164: * either renaming it a second time if it was already
3165: * renamed before, or renaming it for the first time.
3166: * In both cases, override an existing user-defined
3167: * macro bearing the new name, if that exists.
3168: */
3169:
3170: if ((value = roff_getrenn(r, oldn, oldsz)) != NULL) {
3171: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3172: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
3173: } else
3174: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
3175: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3176: return ROFF_IGN;
3177: }
3178:
3179: static enum rofferr
1.105 kristaps 3180: roff_so(ROFF_ARGS)
3181: {
1.249 schwarze 3182: char *name, *cp;
1.105 kristaps 3183:
1.238 schwarze 3184: name = buf->buf + pos;
1.224 schwarze 3185: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.105 kristaps 3186:
3187: /*
3188: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3189: * opening anything that's not in our cwd or anything beneath
3190: * it. Thus, explicitly disallow traversing up the file-system
3191: * or using absolute paths.
3192: */
3193:
1.238 schwarze 3194: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.210 schwarze 3195: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
3196: ".so %s", name);
1.249 schwarze 3197: buf->sz = mandoc_asprintf(&cp,
3198: ".sp\nSee the file %s.\n.sp", name) + 1;
3199: free(buf->buf);
3200: buf->buf = cp;
3201: *offs = 0;
1.277 schwarze 3202: return ROFF_REPARSE;
1.105 kristaps 3203: }
3204:
3205: *offs = pos;
1.277 schwarze 3206: return ROFF_SO;
1.105 kristaps 3207: }
1.92 schwarze 3208:
1.266 schwarze 3209: /* --- user defined strings and macros ------------------------------------ */
3210:
1.106 kristaps 3211: static enum rofferr
3212: roff_userdef(ROFF_ARGS)
1.99 kristaps 3213: {
1.311 schwarze 3214: const char *arg[16], *ap;
1.106 kristaps 3215: char *cp, *n1, *n2;
1.292 schwarze 3216: int expand_count, i, ib, ie;
1.263 schwarze 3217: size_t asz, rsz;
1.106 kristaps 3218:
3219: /*
3220: * Collect pointers to macro argument strings
1.188 schwarze 3221: * and NUL-terminate them.
1.106 kristaps 3222: */
1.263 schwarze 3223:
1.273 schwarze 3224: r->argc = 0;
1.238 schwarze 3225: cp = buf->buf + pos;
1.311 schwarze 3226: for (i = 0; i < 16; i++) {
1.273 schwarze 3227: if (*cp == '\0')
3228: arg[i] = "";
3229: else {
3230: arg[i] = mandoc_getarg(r->parse, &cp, ln, &pos);
3231: r->argc = i + 1;
3232: }
3233: }
1.99 kristaps 3234:
1.106 kristaps 3235: /*
3236: * Expand macro arguments.
1.99 kristaps 3237: */
1.263 schwarze 3238:
3239: buf->sz = strlen(r->current_string) + 1;
1.292 schwarze 3240: n1 = n2 = cp = mandoc_malloc(buf->sz);
1.263 schwarze 3241: memcpy(n1, r->current_string, buf->sz);
1.292 schwarze 3242: expand_count = 0;
1.263 schwarze 3243: while (*cp != '\0') {
3244:
3245: /* Scan ahead for the next argument invocation. */
3246:
3247: if (*cp++ != '\\')
3248: continue;
3249: if (*cp++ != '$')
3250: continue;
1.274 schwarze 3251: if (*cp == '*') { /* \\$* inserts all arguments */
3252: ib = 0;
3253: ie = r->argc - 1;
3254: } else { /* \\$1 .. \\$9 insert one argument */
3255: ib = ie = *cp - '1';
3256: if (ib < 0 || ib > 8)
3257: continue;
3258: }
1.263 schwarze 3259: cp -= 2;
1.292 schwarze 3260:
3261: /*
3262: * Prevent infinite recursion.
3263: */
3264:
3265: if (cp >= n2)
3266: expand_count = 1;
3267: else if (++expand_count > EXPAND_LIMIT) {
3268: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
3269: ln, (int)(cp - n1), NULL);
1.293 schwarze 3270: free(buf->buf);
3271: buf->buf = n1;
1.292 schwarze 3272: return ROFF_IGN;
3273: }
1.263 schwarze 3274:
3275: /*
3276: * Determine the size of the expanded argument,
3277: * taking escaping of quotes into account.
3278: */
3279:
1.274 schwarze 3280: asz = ie > ib ? ie - ib : 0; /* for blanks */
3281: for (i = ib; i <= ie; i++) {
3282: for (ap = arg[i]; *ap != '\0'; ap++) {
3283: asz++;
3284: if (*ap == '"')
3285: asz += 3;
3286: }
1.263 schwarze 3287: }
3288: if (asz != 3) {
3289:
3290: /*
3291: * Determine the size of the rest of the
3292: * unexpanded macro, including the NUL.
3293: */
3294:
3295: rsz = buf->sz - (cp - n1) - 3;
3296:
3297: /*
3298: * When shrinking, move before
3299: * releasing the storage.
3300: */
3301:
3302: if (asz < 3)
3303: memmove(cp + asz, cp + 3, rsz);
3304:
3305: /*
3306: * Resize the storage for the macro
3307: * and readjust the parse pointer.
3308: */
3309:
3310: buf->sz += asz - 3;
3311: n2 = mandoc_realloc(n1, buf->sz);
3312: cp = n2 + (cp - n1);
3313: n1 = n2;
3314:
3315: /*
3316: * When growing, make room
3317: * for the expanded argument.
3318: */
3319:
3320: if (asz > 3)
3321: memmove(cp + asz, cp + 3, rsz);
3322: }
3323:
3324: /* Copy the expanded argument, escaping quotes. */
3325:
3326: n2 = cp;
1.274 schwarze 3327: for (i = ib; i <= ie; i++) {
3328: for (ap = arg[i]; *ap != '\0'; ap++) {
3329: if (*ap == '"') {
3330: memcpy(n2, "\\(dq", 4);
3331: n2 += 4;
3332: } else
3333: *n2++ = *ap;
3334: }
3335: if (i < ie)
3336: *n2++ = ' ';
1.106 kristaps 3337: }
1.99 kristaps 3338: }
3339:
1.106 kristaps 3340: /*
3341: * Replace the macro invocation
3342: * by the expanded macro.
3343: */
1.263 schwarze 3344:
1.238 schwarze 3345: free(buf->buf);
3346: buf->buf = n1;
1.248 schwarze 3347: *offs = 0;
1.106 kristaps 3348:
1.277 schwarze 3349: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
3350: ROFF_REPARSE : ROFF_APPEND;
1.99 kristaps 3351: }
1.121 schwarze 3352:
1.306 schwarze 3353: /*
3354: * Calling a high-level macro that was renamed with .rn.
3355: * r->current_string has already been set up by roff_parse().
3356: */
3357: static enum rofferr
3358: roff_renamed(ROFF_ARGS)
3359: {
3360: char *nbuf;
3361:
3362: buf->sz = mandoc_asprintf(&nbuf, ".%s %s", r->current_string,
3363: buf->buf + pos) + 1;
3364: free(buf->buf);
3365: buf->buf = nbuf;
3366: return ROFF_CONT;
3367: }
3368:
1.212 schwarze 3369: static size_t
1.121 schwarze 3370: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3371: {
3372: char *name, *cp;
1.212 schwarze 3373: size_t namesz;
1.121 schwarze 3374:
3375: name = *cpp;
3376: if ('\0' == *name)
1.277 schwarze 3377: return 0;
1.121 schwarze 3378:
1.212 schwarze 3379: /* Read until end of name and terminate it with NUL. */
3380: for (cp = name; 1; cp++) {
3381: if ('\0' == *cp || ' ' == *cp) {
3382: namesz = cp - name;
3383: break;
3384: }
1.121 schwarze 3385: if ('\\' != *cp)
3386: continue;
1.215 schwarze 3387: namesz = cp - name;
3388: if ('{' == cp[1] || '}' == cp[1])
3389: break;
1.121 schwarze 3390: cp++;
3391: if ('\\' == *cp)
3392: continue;
1.224 schwarze 3393: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3394: "%.*s", (int)(cp - name + 1), name);
1.212 schwarze 3395: mandoc_escape((const char **)&cp, NULL, NULL);
3396: break;
1.121 schwarze 3397: }
3398:
3399: /* Read past spaces. */
3400: while (' ' == *cp)
3401: cp++;
3402:
3403: *cpp = cp;
1.277 schwarze 3404: return namesz;
1.121 schwarze 3405: }
3406:
1.106 kristaps 3407: /*
3408: * Store *string into the user-defined string called *name.
3409: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.193 schwarze 3410: * append == 0: replace mode
3411: * append == 1: single-line append mode
3412: * append == 2: multiline append mode, append '\n' after each call
1.106 kristaps 3413: */
1.94 kristaps 3414: static void
1.106 kristaps 3415: roff_setstr(struct roff *r, const char *name, const char *string,
1.193 schwarze 3416: int append)
1.92 schwarze 3417: {
1.164 kristaps 3418:
3419: roff_setstrn(&r->strtab, name, strlen(name), string,
1.207 schwarze 3420: string ? strlen(string) : 0, append);
1.164 kristaps 3421: }
3422:
3423: static void
1.166 kristaps 3424: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.193 schwarze 3425: const char *string, size_t stringsz, int append)
1.164 kristaps 3426: {
1.166 kristaps 3427: struct roffkv *n;
1.164 kristaps 3428: char *c;
3429: int i;
3430: size_t oldch, newch;
1.92 schwarze 3431:
1.106 kristaps 3432: /* Search for an existing string with the same name. */
1.164 kristaps 3433: n = *r;
3434:
1.211 schwarze 3435: while (n && (namesz != n->key.sz ||
3436: strncmp(n->key.p, name, namesz)))
1.92 schwarze 3437: n = n->next;
1.94 kristaps 3438:
3439: if (NULL == n) {
1.106 kristaps 3440: /* Create a new string table entry. */
1.166 kristaps 3441: n = mandoc_malloc(sizeof(struct roffkv));
3442: n->key.p = mandoc_strndup(name, namesz);
3443: n->key.sz = namesz;
3444: n->val.p = NULL;
3445: n->val.sz = 0;
1.164 kristaps 3446: n->next = *r;
3447: *r = n;
1.193 schwarze 3448: } else if (0 == append) {
1.166 kristaps 3449: free(n->val.p);
3450: n->val.p = NULL;
3451: n->val.sz = 0;
1.106 kristaps 3452: }
3453:
3454: if (NULL == string)
3455: return;
3456:
3457: /*
3458: * One additional byte for the '\n' in multiline mode,
3459: * and one for the terminating '\0'.
3460: */
1.193 schwarze 3461: newch = stringsz + (1 < append ? 2u : 1u);
1.164 kristaps 3462:
1.166 kristaps 3463: if (NULL == n->val.p) {
3464: n->val.p = mandoc_malloc(newch);
3465: *n->val.p = '\0';
1.106 kristaps 3466: oldch = 0;
3467: } else {
1.166 kristaps 3468: oldch = n->val.sz;
3469: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.106 kristaps 3470: }
3471:
3472: /* Skip existing content in the destination buffer. */
1.166 kristaps 3473: c = n->val.p + (int)oldch;
1.106 kristaps 3474:
3475: /* Append new content to the destination buffer. */
1.164 kristaps 3476: i = 0;
3477: while (i < (int)stringsz) {
1.106 kristaps 3478: /*
3479: * Rudimentary roff copy mode:
3480: * Handle escaped backslashes.
3481: */
1.164 kristaps 3482: if ('\\' == string[i] && '\\' == string[i + 1])
3483: i++;
3484: *c++ = string[i++];
1.106 kristaps 3485: }
1.94 kristaps 3486:
1.106 kristaps 3487: /* Append terminating bytes. */
1.193 schwarze 3488: if (1 < append)
1.106 kristaps 3489: *c++ = '\n';
1.163 kristaps 3490:
1.106 kristaps 3491: *c = '\0';
1.166 kristaps 3492: n->val.sz = (int)(c - n->val.p);
1.92 schwarze 3493: }
3494:
1.94 kristaps 3495: static const char *
3496: roff_getstrn(const struct roff *r, const char *name, size_t len)
1.92 schwarze 3497: {
1.166 kristaps 3498: const struct roffkv *n;
1.191 schwarze 3499: int i;
1.92 schwarze 3500:
1.164 kristaps 3501: for (n = r->strtab; n; n = n->next)
1.207 schwarze 3502: if (0 == strncmp(name, n->key.p, len) &&
3503: '\0' == n->key.p[(int)len])
1.277 schwarze 3504: return n->val.p;
1.191 schwarze 3505:
3506: for (i = 0; i < PREDEFS_MAX; i++)
3507: if (0 == strncmp(name, predefs[i].name, len) &&
3508: '\0' == predefs[i].name[(int)len])
1.277 schwarze 3509: return predefs[i].str;
1.306 schwarze 3510:
3511: return NULL;
3512: }
3513:
3514: /*
3515: * Check whether *name is the renamed name of a high-level macro.
3516: * Return the standard name, or NULL if it is not.
3517: */
3518: static const char *
3519: roff_getrenn(const struct roff *r, const char *name, size_t len)
3520: {
3521: const struct roffkv *n;
3522:
3523: for (n = r->rentab; n; n = n->next)
3524: if (0 == strncmp(name, n->key.p, len) &&
3525: '\0' == n->key.p[(int)len])
3526: return n->val.p;
1.94 kristaps 3527:
1.277 schwarze 3528: return NULL;
1.92 schwarze 3529: }
3530:
1.94 kristaps 3531: static void
1.167 kristaps 3532: roff_freestr(struct roffkv *r)
1.92 schwarze 3533: {
1.166 kristaps 3534: struct roffkv *n, *nn;
1.92 schwarze 3535:
1.167 kristaps 3536: for (n = r; n; n = nn) {
1.166 kristaps 3537: free(n->key.p);
3538: free(n->val.p);
1.92 schwarze 3539: nn = n->next;
3540: free(n);
3541: }
1.114 kristaps 3542: }
1.266 schwarze 3543:
3544: /* --- accessors and utility functions ------------------------------------ */
1.114 kristaps 3545:
3546: const struct tbl_span *
3547: roff_span(const struct roff *r)
3548: {
1.207 schwarze 3549:
1.277 schwarze 3550: return r->tbl ? tbl_span(r->tbl) : NULL;
1.125 kristaps 3551: }
3552:
3553: const struct eqn *
3554: roff_eqn(const struct roff *r)
3555: {
1.207 schwarze 3556:
1.277 schwarze 3557: return r->last_eqn ? &r->last_eqn->eqn : NULL;
1.164 kristaps 3558: }
3559:
3560: /*
3561: * Duplicate an input string, making the appropriate character
3562: * conversations (as stipulated by `tr') along the way.
3563: * Returns a heap-allocated string with all the replacements made.
3564: */
3565: char *
3566: roff_strdup(const struct roff *r, const char *p)
3567: {
1.166 kristaps 3568: const struct roffkv *cp;
1.164 kristaps 3569: char *res;
3570: const char *pp;
3571: size_t ssz, sz;
3572: enum mandoc_esc esc;
3573:
1.167 kristaps 3574: if (NULL == r->xmbtab && NULL == r->xtab)
1.277 schwarze 3575: return mandoc_strdup(p);
1.164 kristaps 3576: else if ('\0' == *p)
1.277 schwarze 3577: return mandoc_strdup("");
1.164 kristaps 3578:
3579: /*
3580: * Step through each character looking for term matches
3581: * (remember that a `tr' can be invoked with an escape, which is
3582: * a glyph but the escape is multi-character).
3583: * We only do this if the character hash has been initialised
3584: * and the string is >0 length.
3585: */
3586:
3587: res = NULL;
3588: ssz = 0;
3589:
3590: while ('\0' != *p) {
1.289 schwarze 3591: assert((unsigned int)*p < 128);
3592: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.167 kristaps 3593: sz = r->xtab[(int)*p].sz;
3594: res = mandoc_realloc(res, ssz + sz + 1);
3595: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3596: ssz += sz;
3597: p++;
3598: continue;
3599: } else if ('\\' != *p) {
3600: res = mandoc_realloc(res, ssz + 2);
3601: res[ssz++] = *p++;
3602: continue;
3603: }
3604:
1.164 kristaps 3605: /* Search for term matches. */
1.167 kristaps 3606: for (cp = r->xmbtab; cp; cp = cp->next)
1.166 kristaps 3607: if (0 == strncmp(p, cp->key.p, cp->key.sz))
1.164 kristaps 3608: break;
3609:
3610: if (NULL != cp) {
3611: /*
3612: * A match has been found.
3613: * Append the match to the array and move
3614: * forward by its keysize.
3615: */
1.207 schwarze 3616: res = mandoc_realloc(res,
3617: ssz + cp->val.sz + 1);
1.166 kristaps 3618: memcpy(res + ssz, cp->val.p, cp->val.sz);
3619: ssz += cp->val.sz;
3620: p += (int)cp->key.sz;
1.164 kristaps 3621: continue;
3622: }
3623:
1.167 kristaps 3624: /*
3625: * Handle escapes carefully: we need to copy
3626: * over just the escape itself, or else we might
3627: * do replacements within the escape itself.
3628: * Make sure to pass along the bogus string.
3629: */
3630: pp = p++;
3631: esc = mandoc_escape(&p, NULL, NULL);
3632: if (ESCAPE_ERROR == esc) {
3633: sz = strlen(pp);
1.164 kristaps 3634: res = mandoc_realloc(res, ssz + sz + 1);
3635: memcpy(res + ssz, pp, sz);
1.167 kristaps 3636: break;
1.164 kristaps 3637: }
1.207 schwarze 3638: /*
3639: * We bail out on bad escapes.
1.167 kristaps 3640: * No need to warn: we already did so when
3641: * roff_res() was called.
3642: */
3643: sz = (int)(p - pp);
3644: res = mandoc_realloc(res, ssz + sz + 1);
3645: memcpy(res + ssz, pp, sz);
3646: ssz += sz;
1.164 kristaps 3647: }
3648:
3649: res[(int)ssz] = '\0';
1.277 schwarze 3650: return res;
1.227 schwarze 3651: }
3652:
3653: int
3654: roff_getformat(const struct roff *r)
3655: {
3656:
1.277 schwarze 3657: return r->format;
1.174 kristaps 3658: }
3659:
3660: /*
1.207 schwarze 3661: * Find out whether a line is a macro line or not.
1.174 kristaps 3662: * If it is, adjust the current position and return one; if it isn't,
3663: * return zero and don't change the current position.
3664: * If the control character has been set with `.cc', then let that grain
3665: * precedence.
3666: * This is slighly contrary to groff, where using the non-breaking
3667: * control character when `cc' has been invoked will cause the
3668: * non-breaking macro contents to be printed verbatim.
3669: */
3670: int
3671: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
3672: {
3673: int pos;
3674:
3675: pos = *ppos;
3676:
1.303 schwarze 3677: if (r->control != '\0' && cp[pos] == r->control)
1.174 kristaps 3678: pos++;
1.303 schwarze 3679: else if (r->control != '\0')
1.277 schwarze 3680: return 0;
1.174 kristaps 3681: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
3682: pos += 2;
3683: else if ('.' == cp[pos] || '\'' == cp[pos])
3684: pos++;
3685: else
1.277 schwarze 3686: return 0;
1.174 kristaps 3687:
3688: while (' ' == cp[pos] || '\t' == cp[pos])
3689: pos++;
3690:
3691: *ppos = pos;
1.277 schwarze 3692: return 1;
1.74 kristaps 3693: }
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