Annotation of mandoc/roff.c, Revision 1.305
1.305 ! schwarze 1: /* $Id: roff.c,v 1.304 2017/06/04 22:44:15 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 */
1.167 kristaps 86: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
87: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.106 kristaps 88: const char *current_string; /* value of last called user macro */
1.118 kristaps 89: struct tbl_node *first_tbl; /* first table parsed */
90: struct tbl_node *last_tbl; /* last table parsed */
91: struct tbl_node *tbl; /* current table being parsed */
1.125 kristaps 92: struct eqn_node *last_eqn; /* last equation parsed */
93: struct eqn_node *first_eqn; /* first equation parsed */
94: struct eqn_node *eqn; /* current equation being parsed */
1.230 schwarze 95: int eqn_inline; /* current equation is inline */
1.223 schwarze 96: int options; /* parse options */
97: int rstacksz; /* current size limit of rstack */
98: int rstackpos; /* position in rstack */
1.227 schwarze 99: int format; /* current file in mdoc or man format */
1.273 schwarze 100: int argc; /* number of args of the last macro */
1.223 schwarze 101: char control; /* control character */
1.303 schwarze 102: char escape; /* escape character */
1.79 kristaps 103: };
104:
1.67 kristaps 105: struct roffnode {
1.294 schwarze 106: enum roff_tok tok; /* type of node */
1.67 kristaps 107: struct roffnode *parent; /* up one in stack */
108: int line; /* parse line */
109: int col; /* parse col */
1.106 kristaps 110: char *name; /* node name, e.g. macro name */
1.79 kristaps 111: char *end; /* end-rules: custom token */
112: int endspan; /* end-rules: next-line or infty */
1.198 schwarze 113: int rule; /* current evaluation rule */
1.67 kristaps 114: };
115:
116: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.294 schwarze 117: enum roff_tok tok, /* tok of macro */ \
1.238 schwarze 118: struct buf *buf, /* input buffer */ \
1.67 kristaps 119: int ln, /* parse line */ \
1.75 kristaps 120: int ppos, /* original pos in buffer */ \
121: int pos, /* current pos in buffer */ \
1.74 kristaps 122: int *offs /* reset offset of buffer data */
1.67 kristaps 123:
124: typedef enum rofferr (*roffproc)(ROFF_ARGS);
125:
126: struct roffmac {
1.79 kristaps 127: roffproc proc; /* process new macro */
128: roffproc text; /* process as child text of macro */
129: roffproc sub; /* process as child of macro */
130: int flags;
131: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.67 kristaps 132: };
133:
1.141 kristaps 134: struct predef {
135: const char *name; /* predefined input name */
136: const char *str; /* replacement symbol */
137: };
138:
139: #define PREDEF(__name, __str) \
140: { (__name), (__str) },
141:
1.266 schwarze 142: /* --- function prototypes ------------------------------------------------ */
143:
1.155 kristaps 144: static void roffnode_cleanscope(struct roff *);
145: static void roffnode_pop(struct roff *);
1.294 schwarze 146: static void roffnode_push(struct roff *, enum roff_tok,
1.155 kristaps 147: const char *, int, int);
1.80 kristaps 148: static enum rofferr roff_block(ROFF_ARGS);
149: static enum rofferr roff_block_text(ROFF_ARGS);
150: static enum rofferr roff_block_sub(ROFF_ARGS);
1.296 schwarze 151: static enum rofferr roff_br(ROFF_ARGS);
1.80 kristaps 152: static enum rofferr roff_cblock(ROFF_ARGS);
1.174 kristaps 153: static enum rofferr roff_cc(ROFF_ARGS);
1.195 schwarze 154: static void roff_ccond(struct roff *, int, int);
1.82 kristaps 155: static enum rofferr roff_cond(ROFF_ARGS);
156: static enum rofferr roff_cond_text(ROFF_ARGS);
157: static enum rofferr roff_cond_sub(ROFF_ARGS);
1.92 schwarze 158: static enum rofferr roff_ds(ROFF_ARGS);
1.303 schwarze 159: static enum rofferr roff_ec(ROFF_ARGS);
160: static enum rofferr roff_eo(ROFF_ARGS);
1.238 schwarze 161: static enum rofferr roff_eqndelim(struct roff *, struct buf *, int);
1.271 schwarze 162: static int roff_evalcond(struct roff *r, int, char *, int *);
1.234 kristaps 163: static int roff_evalnum(struct roff *, int,
164: const char *, int *, int *, int);
165: static int roff_evalpar(struct roff *, int,
1.261 schwarze 166: const char *, int *, int *, int);
1.198 schwarze 167: static int roff_evalstrcond(const char *, int *);
1.155 kristaps 168: static void roff_free1(struct roff *);
1.180 schwarze 169: static void roff_freereg(struct roffreg *);
1.167 kristaps 170: static void roff_freestr(struct roffkv *);
1.212 schwarze 171: static size_t roff_getname(struct roff *, char **, int, int);
1.261 schwarze 172: static int roff_getnum(const char *, int *, int *, int);
1.184 schwarze 173: static int roff_getop(const char *, int *, char *);
1.181 schwarze 174: static int roff_getregn(const struct roff *,
175: const char *, size_t);
1.273 schwarze 176: static int roff_getregro(const struct roff *,
177: const char *name);
1.207 schwarze 178: static const char *roff_getstrn(const struct roff *,
1.94 kristaps 179: const char *, size_t);
1.271 schwarze 180: static int roff_hasregn(const struct roff *,
181: const char *, size_t);
1.251 schwarze 182: static enum rofferr roff_insec(ROFF_ARGS);
1.178 schwarze 183: static enum rofferr roff_it(ROFF_ARGS);
1.103 kristaps 184: static enum rofferr roff_line_ignore(ROFF_ARGS);
1.265 schwarze 185: static void roff_man_alloc1(struct roff_man *);
186: static void roff_man_free1(struct roff_man *);
1.300 schwarze 187: static enum rofferr roff_manyarg(ROFF_ARGS);
1.89 kristaps 188: static enum rofferr roff_nr(ROFF_ARGS);
1.297 schwarze 189: static enum rofferr roff_onearg(ROFF_ARGS);
1.294 schwarze 190: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.214 schwarze 191: int, int);
1.305 ! schwarze 192: static enum rofferr roff_parsetext(struct roff *, struct buf *,
! 193: int, int *);
1.238 schwarze 194: static enum rofferr roff_res(struct roff *, struct buf *, int, int);
1.122 schwarze 195: static enum rofferr roff_rm(ROFF_ARGS);
1.203 schwarze 196: static enum rofferr roff_rr(ROFF_ARGS);
1.94 kristaps 197: static void roff_setstr(struct roff *,
1.106 kristaps 198: const char *, const char *, int);
1.207 schwarze 199: static void roff_setstrn(struct roffkv **, const char *,
1.164 kristaps 200: size_t, const char *, size_t, int);
1.105 kristaps 201: static enum rofferr roff_so(ROFF_ARGS);
1.164 kristaps 202: static enum rofferr roff_tr(ROFF_ARGS);
1.175 schwarze 203: static enum rofferr roff_Dd(ROFF_ARGS);
204: static enum rofferr roff_TH(ROFF_ARGS);
1.109 kristaps 205: static enum rofferr roff_TE(ROFF_ARGS);
206: static enum rofferr roff_TS(ROFF_ARGS);
1.125 kristaps 207: static enum rofferr roff_EQ(ROFF_ARGS);
208: static enum rofferr roff_EN(ROFF_ARGS);
1.112 kristaps 209: static enum rofferr roff_T_(ROFF_ARGS);
1.251 schwarze 210: static enum rofferr roff_unsupp(ROFF_ARGS);
1.106 kristaps 211: static enum rofferr roff_userdef(ROFF_ARGS);
1.67 kristaps 212:
1.266 schwarze 213: /* --- constant data ------------------------------------------------------ */
214:
1.261 schwarze 215: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
216: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
217:
1.294 schwarze 218: const char *__roff_name[MAN_MAX + 1] = {
1.305 ! schwarze 219: "br", "ce", "ft", "ll",
! 220: "mc", "sp", "ta", "ti",
! 221: NULL,
1.294 schwarze 222: "ab", "ad", "af", "aln",
223: "als", "am", "am1", "ami",
224: "ami1", "as", "as1", "asciify",
225: "backtrace", "bd", "bleedat", "blm",
226: "box", "boxa", "bp", "BP",
227: "break", "breakchar", "brnl", "brp",
1.305 ! schwarze 228: "brpnl", "c2", "cc",
1.294 schwarze 229: "cf", "cflags", "ch", "char",
230: "chop", "class", "close", "CL",
231: "color", "composite", "continue", "cp",
232: "cropat", "cs", "cu", "da",
233: "dch", "Dd", "de", "de1",
234: "defcolor", "dei", "dei1", "device",
235: "devicem", "di", "do", "ds",
236: "ds1", "dwh", "dt", "ec",
237: "ecr", "ecs", "el", "em",
238: "EN", "eo", "EP", "EQ",
239: "errprint", "ev", "evc", "ex",
240: "fallback", "fam", "fc", "fchar",
241: "fcolor", "fdeferlig", "feature", "fkern",
242: "fl", "flig", "fp", "fps",
243: "fschar", "fspacewidth", "fspecial", "ftr",
244: "fzoom", "gcolor", "hc", "hcode",
245: "hidechar", "hla", "hlm", "hpf",
246: "hpfa", "hpfcode", "hw", "hy",
247: "hylang", "hylen", "hym", "hypp",
248: "hys", "ie", "if", "ig",
249: "index", "it", "itc", "IX",
250: "kern", "kernafter", "kernbefore", "kernpair",
251: "lc", "lc_ctype", "lds", "length",
252: "letadj", "lf", "lg", "lhang",
253: "linetabs", "lnr", "lnrf", "lpfx",
1.304 schwarze 254: "ls", "lsm", "lt",
1.294 schwarze 255: "mediasize", "minss", "mk", "mso",
256: "na", "ne", "nh", "nhychar",
257: "nm", "nn", "nop", "nr",
258: "nrf", "nroff", "ns", "nx",
259: "open", "opena", "os", "output",
260: "padj", "papersize", "pc", "pev",
261: "pi", "PI", "pl", "pm",
262: "pn", "pnr", "po", "ps",
263: "psbb", "pshape", "pso", "ptr",
264: "pvs", "rchar", "rd", "recursionlimit",
265: "return", "rfschar", "rhang", "rj",
266: "rm", "rn", "rnn", "rr",
267: "rs", "rt", "schar", "sentchar",
268: "shc", "shift", "sizes", "so",
269: "spacewidth", "special", "spreadwarn", "ss",
270: "sty", "substring", "sv", "sy",
1.300 schwarze 271: "T&", "tc", "TE",
1.301 schwarze 272: "TH", "tkf", "tl",
1.294 schwarze 273: "tm", "tm1", "tmc", "tr",
274: "track", "transchar", "trf", "trimat",
275: "trin", "trnt", "troff", "TS",
276: "uf", "ul", "unformat", "unwatch",
277: "unwatchn", "vpt", "vs", "warn",
278: "warnscale", "watch", "watchlength", "watchn",
279: "wh", "while", "write", "writec",
280: "writem", "xflag", ".", NULL,
281: "text",
282: "Dd", "Dt", "Os", "Sh",
283: "Ss", "Pp", "D1", "Dl",
284: "Bd", "Ed", "Bl", "El",
285: "It", "Ad", "An", "Ap",
286: "Ar", "Cd", "Cm", "Dv",
287: "Er", "Ev", "Ex", "Fa",
288: "Fd", "Fl", "Fn", "Ft",
289: "Ic", "In", "Li", "Nd",
290: "Nm", "Op", "Ot", "Pa",
291: "Rv", "St", "Va", "Vt",
292: "Xr", "%A", "%B", "%D",
293: "%I", "%J", "%N", "%O",
294: "%P", "%R", "%T", "%V",
295: "Ac", "Ao", "Aq", "At",
296: "Bc", "Bf", "Bo", "Bq",
297: "Bsx", "Bx", "Db", "Dc",
298: "Do", "Dq", "Ec", "Ef",
299: "Em", "Eo", "Fx", "Ms",
300: "No", "Ns", "Nx", "Ox",
301: "Pc", "Pf", "Po", "Pq",
302: "Qc", "Ql", "Qo", "Qq",
303: "Re", "Rs", "Sc", "So",
304: "Sq", "Sm", "Sx", "Sy",
305: "Tn", "Ux", "Xc", "Xo",
306: "Fo", "Fc", "Oo", "Oc",
307: "Bk", "Ek", "Bt", "Hf",
308: "Fr", "Ud", "Lb", "Lp",
309: "Lk", "Mt", "Brq", "Bro",
310: "Brc", "%C", "Es", "En",
1.299 schwarze 311: "Dx", "%Q", "%U", "Ta",
312: NULL,
1.294 schwarze 313: "TH", "SH", "SS", "TP",
314: "LP", "PP", "P", "IP",
315: "HP", "SM", "SB", "BI",
316: "IB", "BR", "RB", "R",
317: "B", "I", "IR", "RI",
1.299 schwarze 318: "nf", "fi",
1.294 schwarze 319: "RE", "RS", "DT", "UC",
1.297 schwarze 320: "PD", "AT", "in",
1.294 schwarze 321: "OP", "EX", "EE", "UR",
1.298 schwarze 322: "UE", NULL
1.294 schwarze 323: };
324: const char *const *roff_name = __roff_name;
325:
326: static struct roffmac roffs[TOKEN_NONE] = {
1.296 schwarze 327: { roff_br, NULL, NULL, 0 }, /* br */
1.305 ! schwarze 328: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.297 schwarze 329: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.298 schwarze 330: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.304 schwarze 331: { roff_onearg, NULL, NULL, 0 }, /* mc */
1.299 schwarze 332: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.300 schwarze 333: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.301 schwarze 334: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.296 schwarze 335: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.295 schwarze 336: { roff_unsupp, NULL, NULL, 0 }, /* ab */
337: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
338: { roff_line_ignore, NULL, NULL, 0 }, /* af */
339: { roff_unsupp, NULL, NULL, 0 }, /* aln */
340: { roff_unsupp, NULL, NULL, 0 }, /* als */
341: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
342: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
343: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
344: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
345: { roff_ds, NULL, NULL, 0 }, /* as */
346: { roff_ds, NULL, NULL, 0 }, /* as1 */
347: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
348: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
349: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
350: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
351: { roff_unsupp, NULL, NULL, 0 }, /* blm */
352: { roff_unsupp, NULL, NULL, 0 }, /* box */
353: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
354: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
355: { roff_unsupp, NULL, NULL, 0 }, /* BP */
356: { roff_unsupp, NULL, NULL, 0 }, /* break */
357: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
358: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.296 schwarze 359: { roff_br, NULL, NULL, 0 }, /* brp */
1.295 schwarze 360: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
361: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
362: { roff_cc, NULL, NULL, 0 }, /* cc */
363: { roff_insec, NULL, NULL, 0 }, /* cf */
364: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
365: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
366: { roff_unsupp, NULL, NULL, 0 }, /* char */
367: { roff_unsupp, NULL, NULL, 0 }, /* chop */
368: { roff_line_ignore, NULL, NULL, 0 }, /* class */
369: { roff_insec, NULL, NULL, 0 }, /* close */
370: { roff_unsupp, NULL, NULL, 0 }, /* CL */
371: { roff_line_ignore, NULL, NULL, 0 }, /* color */
372: { roff_unsupp, NULL, NULL, 0 }, /* composite */
373: { roff_unsupp, NULL, NULL, 0 }, /* continue */
374: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
375: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
376: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
377: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
378: { roff_unsupp, NULL, NULL, 0 }, /* da */
379: { roff_unsupp, NULL, NULL, 0 }, /* dch */
380: { roff_Dd, NULL, NULL, 0 }, /* Dd */
381: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
382: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
383: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
384: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
385: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
386: { roff_unsupp, NULL, NULL, 0 }, /* device */
387: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
388: { roff_unsupp, NULL, NULL, 0 }, /* di */
389: { roff_unsupp, NULL, NULL, 0 }, /* do */
390: { roff_ds, NULL, NULL, 0 }, /* ds */
391: { roff_ds, NULL, NULL, 0 }, /* ds1 */
392: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
393: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.303 schwarze 394: { roff_ec, NULL, NULL, 0 }, /* ec */
1.295 schwarze 395: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
396: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
397: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
398: { roff_unsupp, NULL, NULL, 0 }, /* em */
399: { roff_EN, NULL, NULL, 0 }, /* EN */
1.303 schwarze 400: { roff_eo, NULL, NULL, 0 }, /* eo */
1.295 schwarze 401: { roff_unsupp, NULL, NULL, 0 }, /* EP */
402: { roff_EQ, NULL, NULL, 0 }, /* EQ */
403: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
404: { roff_unsupp, NULL, NULL, 0 }, /* ev */
405: { roff_unsupp, NULL, NULL, 0 }, /* evc */
406: { roff_unsupp, NULL, NULL, 0 }, /* ex */
407: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
408: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
409: { roff_unsupp, NULL, NULL, 0 }, /* fc */
410: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
411: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
412: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
413: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
414: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
415: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
416: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
417: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
418: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
419: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
420: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
421: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
422: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
423: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
424: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
425: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
426: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
427: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
428: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
429: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
430: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
431: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
432: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
433: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
434: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
435: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
436: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
437: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
438: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
439: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
440: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
441: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
442: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
443: { roff_unsupp, NULL, NULL, 0 }, /* index */
444: { roff_it, NULL, NULL, 0 }, /* it */
445: { roff_unsupp, NULL, NULL, 0 }, /* itc */
446: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
447: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
448: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
449: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
450: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
451: { roff_unsupp, NULL, NULL, 0 }, /* lc */
452: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
453: { roff_unsupp, NULL, NULL, 0 }, /* lds */
454: { roff_unsupp, NULL, NULL, 0 }, /* length */
455: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
456: { roff_insec, NULL, NULL, 0 }, /* lf */
457: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
458: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
459: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
460: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
461: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
462: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
463: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
464: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
465: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
466: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
467: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
468: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
469: { roff_insec, NULL, NULL, 0 }, /* mso */
470: { roff_line_ignore, NULL, NULL, 0 }, /* na */
471: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
472: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
473: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
474: { roff_unsupp, NULL, NULL, 0 }, /* nm */
475: { roff_unsupp, NULL, NULL, 0 }, /* nn */
476: { roff_unsupp, NULL, NULL, 0 }, /* nop */
477: { roff_nr, NULL, NULL, 0 }, /* nr */
478: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
479: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
480: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
481: { roff_insec, NULL, NULL, 0 }, /* nx */
482: { roff_insec, NULL, NULL, 0 }, /* open */
483: { roff_insec, NULL, NULL, 0 }, /* opena */
484: { roff_line_ignore, NULL, NULL, 0 }, /* os */
485: { roff_unsupp, NULL, NULL, 0 }, /* output */
486: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
487: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
488: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
489: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
490: { roff_insec, NULL, NULL, 0 }, /* pi */
491: { roff_unsupp, NULL, NULL, 0 }, /* PI */
492: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
493: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
494: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
495: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
496: { roff_line_ignore, NULL, NULL, 0 }, /* po */
497: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
498: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
499: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
500: { roff_insec, NULL, NULL, 0 }, /* pso */
501: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
502: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
503: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
504: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
505: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
506: { roff_unsupp, NULL, NULL, 0 }, /* return */
507: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
508: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
509: { roff_line_ignore, NULL, NULL, 0 }, /* rj */
510: { roff_rm, NULL, NULL, 0 }, /* rm */
511: { roff_unsupp, NULL, NULL, 0 }, /* rn */
512: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
513: { roff_rr, NULL, NULL, 0 }, /* rr */
514: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
515: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
516: { roff_unsupp, NULL, NULL, 0 }, /* schar */
517: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
518: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
519: { roff_unsupp, NULL, NULL, 0 }, /* shift */
520: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
521: { roff_so, NULL, NULL, 0 }, /* so */
522: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
523: { roff_line_ignore, NULL, NULL, 0 }, /* special */
524: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
525: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
526: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
527: { roff_unsupp, NULL, NULL, 0 }, /* substring */
528: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
529: { roff_insec, NULL, NULL, 0 }, /* sy */
530: { roff_T_, NULL, NULL, 0 }, /* T& */
531: { roff_unsupp, NULL, NULL, 0 }, /* tc */
532: { roff_TE, NULL, NULL, 0 }, /* TE */
533: { roff_TH, NULL, NULL, 0 }, /* TH */
534: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
535: { roff_unsupp, NULL, NULL, 0 }, /* tl */
536: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
537: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
538: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
539: { roff_tr, NULL, NULL, 0 }, /* tr */
540: { roff_line_ignore, NULL, NULL, 0 }, /* track */
541: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
542: { roff_insec, NULL, NULL, 0 }, /* trf */
543: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
544: { roff_unsupp, NULL, NULL, 0 }, /* trin */
545: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
546: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
547: { roff_TS, NULL, NULL, 0 }, /* TS */
548: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
549: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
550: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
551: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
552: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
553: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
554: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
555: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
556: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
557: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
558: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
559: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
560: { roff_unsupp, NULL, NULL, 0 }, /* wh */
561: { roff_unsupp, NULL, NULL, 0 }, /* while */
562: { roff_insec, NULL, NULL, 0 }, /* write */
563: { roff_insec, NULL, NULL, 0 }, /* writec */
564: { roff_insec, NULL, NULL, 0 }, /* writem */
565: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
566: { roff_cblock, NULL, NULL, 0 }, /* . */
567: { roff_userdef, NULL, NULL, 0 }
1.67 kristaps 568: };
569:
1.200 schwarze 570: /* not currently implemented: Ds em Eq LP Me PP pp Or Rd Sf SH */
1.175 schwarze 571: const char *const __mdoc_reserved[] = {
572: "Ac", "Ad", "An", "Ao", "Ap", "Aq", "Ar", "At",
573: "Bc", "Bd", "Bf", "Bk", "Bl", "Bo", "Bq",
574: "Brc", "Bro", "Brq", "Bsx", "Bt", "Bx",
575: "Cd", "Cm", "Db", "Dc", "Dd", "Dl", "Do", "Dq",
1.200 schwarze 576: "Dt", "Dv", "Dx", "D1",
577: "Ec", "Ed", "Ef", "Ek", "El", "Em",
578: "En", "Eo", "Er", "Es", "Ev", "Ex",
1.175 schwarze 579: "Fa", "Fc", "Fd", "Fl", "Fn", "Fo", "Fr", "Ft", "Fx",
1.200 schwarze 580: "Hf", "Ic", "In", "It", "Lb", "Li", "Lk", "Lp",
581: "Ms", "Mt", "Nd", "Nm", "No", "Ns", "Nx",
1.175 schwarze 582: "Oc", "Oo", "Op", "Os", "Ot", "Ox",
1.200 schwarze 583: "Pa", "Pc", "Pf", "Po", "Pp", "Pq",
584: "Qc", "Ql", "Qo", "Qq", "Re", "Rs", "Rv",
585: "Sc", "Sh", "Sm", "So", "Sq",
1.175 schwarze 586: "Ss", "St", "Sx", "Sy",
587: "Ta", "Tn", "Ud", "Ux", "Va", "Vt", "Xc", "Xo", "Xr",
1.200 schwarze 588: "%A", "%B", "%C", "%D", "%I", "%J", "%N", "%O",
1.175 schwarze 589: "%P", "%Q", "%R", "%T", "%U", "%V",
590: NULL
591: };
592:
1.200 schwarze 593: /* not currently implemented: BT DE DS ME MT PT SY TQ YS */
1.175 schwarze 594: const char *const __man_reserved[] = {
1.200 schwarze 595: "AT", "B", "BI", "BR", "DT",
596: "EE", "EN", "EQ", "EX", "HP", "I", "IB", "IP", "IR",
597: "LP", "OP", "P", "PD", "PP",
598: "R", "RB", "RE", "RI", "RS", "SB", "SH", "SM", "SS",
599: "TE", "TH", "TP", "TS", "T&", "UC", "UE", "UR",
1.175 schwarze 600: NULL
601: };
602:
1.141 kristaps 603: /* Array of injected predefined strings. */
604: #define PREDEFS_MAX 38
605: static const struct predef predefs[PREDEFS_MAX] = {
606: #include "predefs.in"
607: };
608:
1.305 ! schwarze 609: static int roffce_lines; /* number of input lines to center */
! 610: static struct roff_node *roffce_node; /* active request */
1.178 schwarze 611: static int roffit_lines; /* number of lines to delay */
612: static char *roffit_macro; /* nil-terminated macro line */
613:
1.207 schwarze 614:
1.266 schwarze 615: /* --- request table ------------------------------------------------------ */
616:
1.295 schwarze 617: struct ohash *
618: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.85 kristaps 619: {
1.295 schwarze 620: struct ohash *htab;
621: struct roffreq *req;
622: enum roff_tok tok;
623: size_t sz;
624: unsigned int slot;
1.85 kristaps 625:
1.295 schwarze 626: htab = mandoc_malloc(sizeof(*htab));
627: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.85 kristaps 628:
1.295 schwarze 629: for (tok = mintok; tok < maxtok; tok++) {
1.296 schwarze 630: if (roff_name[tok] == NULL)
631: continue;
1.295 schwarze 632: sz = strlen(roff_name[tok]);
633: req = mandoc_malloc(sizeof(*req) + sz + 1);
634: req->tok = tok;
635: memcpy(req->name, roff_name[tok], sz + 1);
636: slot = ohash_qlookup(htab, req->name);
637: ohash_insert(htab, slot, req);
1.85 kristaps 638: }
1.295 schwarze 639: return htab;
1.85 kristaps 640: }
641:
1.295 schwarze 642: void
643: roffhash_free(struct ohash *htab)
1.67 kristaps 644: {
1.295 schwarze 645: struct roffreq *req;
646: unsigned int slot;
1.67 kristaps 647:
1.295 schwarze 648: if (htab == NULL)
649: return;
650: for (req = ohash_first(htab, &slot); req != NULL;
651: req = ohash_next(htab, &slot))
652: free(req);
653: ohash_delete(htab);
654: free(htab);
655: }
656:
657: enum roff_tok
658: roffhash_find(struct ohash *htab, const char *name, size_t sz)
659: {
660: struct roffreq *req;
661: const char *end;
662:
663: if (sz) {
664: end = name + sz;
665: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
666: } else
667: req = ohash_find(htab, ohash_qlookup(htab, name));
668: return req == NULL ? TOKEN_NONE : req->tok;
1.67 kristaps 669: }
670:
1.266 schwarze 671: /* --- stack of request blocks -------------------------------------------- */
672:
1.67 kristaps 673: /*
674: * Pop the current node off of the stack of roff instructions currently
675: * pending.
676: */
677: static void
678: roffnode_pop(struct roff *r)
679: {
680: struct roffnode *p;
681:
1.75 kristaps 682: assert(r->last);
1.207 schwarze 683: p = r->last;
1.82 kristaps 684:
1.75 kristaps 685: r->last = r->last->parent;
1.106 kristaps 686: free(p->name);
687: free(p->end);
1.67 kristaps 688: free(p);
689: }
690:
691: /*
692: * Push a roff node onto the instruction stack. This must later be
693: * removed with roffnode_pop().
694: */
1.98 schwarze 695: static void
1.294 schwarze 696: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.106 kristaps 697: int line, int col)
1.67 kristaps 698: {
699: struct roffnode *p;
700:
1.98 schwarze 701: p = mandoc_calloc(1, sizeof(struct roffnode));
1.67 kristaps 702: p->tok = tok;
1.106 kristaps 703: if (name)
704: p->name = mandoc_strdup(name);
1.67 kristaps 705: p->parent = r->last;
706: p->line = line;
707: p->col = col;
1.198 schwarze 708: p->rule = p->parent ? p->parent->rule : 0;
1.67 kristaps 709:
710: r->last = p;
711: }
712:
1.266 schwarze 713: /* --- roff parser state data management ---------------------------------- */
714:
1.67 kristaps 715: static void
716: roff_free1(struct roff *r)
717: {
1.176 schwarze 718: struct tbl_node *tbl;
1.125 kristaps 719: struct eqn_node *e;
1.167 kristaps 720: int i;
1.67 kristaps 721:
1.176 schwarze 722: while (NULL != (tbl = r->first_tbl)) {
723: r->first_tbl = tbl->next;
724: tbl_free(tbl);
1.109 kristaps 725: }
1.113 kristaps 726: r->first_tbl = r->last_tbl = r->tbl = NULL;
727:
1.125 kristaps 728: while (NULL != (e = r->first_eqn)) {
729: r->first_eqn = e->next;
730: eqn_free(e);
731: }
732: r->first_eqn = r->last_eqn = r->eqn = NULL;
733:
1.67 kristaps 734: while (r->last)
735: roffnode_pop(r);
1.109 kristaps 736:
1.223 schwarze 737: free (r->rstack);
738: r->rstack = NULL;
739: r->rstacksz = 0;
740: r->rstackpos = -1;
741:
742: roff_freereg(r->regtab);
743: r->regtab = NULL;
744:
1.167 kristaps 745: roff_freestr(r->strtab);
746: roff_freestr(r->xmbtab);
747: r->strtab = r->xmbtab = NULL;
748:
749: if (r->xtab)
750: for (i = 0; i < 128; i++)
751: free(r->xtab[i].p);
752: free(r->xtab);
753: r->xtab = NULL;
1.67 kristaps 754: }
755:
756: void
757: roff_reset(struct roff *r)
758: {
759: roff_free1(r);
1.227 schwarze 760: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.303 schwarze 761: r->control = '\0';
762: r->escape = '\\';
1.67 kristaps 763: }
764:
765: void
766: roff_free(struct roff *r)
767: {
768: roff_free1(r);
1.295 schwarze 769: roffhash_free(r->reqtab);
1.67 kristaps 770: free(r);
771: }
772:
773: struct roff *
1.279 schwarze 774: roff_alloc(struct mparse *parse, int options)
1.67 kristaps 775: {
776: struct roff *r;
777:
1.98 schwarze 778: r = mandoc_calloc(1, sizeof(struct roff));
1.128 kristaps 779: r->parse = parse;
1.295 schwarze 780: r->reqtab = roffhash_alloc(0, ROFF_USERDEF);
1.199 schwarze 781: r->options = options;
1.227 schwarze 782: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.82 kristaps 783: r->rstackpos = -1;
1.303 schwarze 784: r->escape = '\\';
1.277 schwarze 785: return r;
1.265 schwarze 786: }
787:
1.266 schwarze 788: /* --- syntax tree state data management ---------------------------------- */
789:
1.265 schwarze 790: static void
791: roff_man_free1(struct roff_man *man)
792: {
793:
1.266 schwarze 794: if (man->first != NULL)
795: roff_node_delete(man, man->first);
1.265 schwarze 796: free(man->meta.msec);
797: free(man->meta.vol);
798: free(man->meta.os);
799: free(man->meta.arch);
800: free(man->meta.title);
801: free(man->meta.name);
802: free(man->meta.date);
803: }
804:
805: static void
806: roff_man_alloc1(struct roff_man *man)
807: {
808:
809: memset(&man->meta, 0, sizeof(man->meta));
810: man->first = mandoc_calloc(1, sizeof(*man->first));
811: man->first->type = ROFFT_ROOT;
812: man->last = man->first;
813: man->last_es = NULL;
814: man->flags = 0;
815: man->macroset = MACROSET_NONE;
816: man->lastsec = man->lastnamed = SEC_NONE;
817: man->next = ROFF_NEXT_CHILD;
818: }
819:
820: void
821: roff_man_reset(struct roff_man *man)
822: {
823:
824: roff_man_free1(man);
825: roff_man_alloc1(man);
826: }
827:
828: void
829: roff_man_free(struct roff_man *man)
830: {
831:
832: roff_man_free1(man);
833: free(man);
834: }
835:
836: struct roff_man *
837: roff_man_alloc(struct roff *roff, struct mparse *parse,
838: const char *defos, int quick)
839: {
840: struct roff_man *man;
841:
842: man = mandoc_calloc(1, sizeof(*man));
843: man->parse = parse;
844: man->roff = roff;
845: man->defos = defos;
846: man->quick = quick;
847: roff_man_alloc1(man);
1.296 schwarze 848: roff->man = man;
1.277 schwarze 849: return man;
1.67 kristaps 850: }
851:
1.266 schwarze 852: /* --- syntax tree handling ----------------------------------------------- */
853:
854: struct roff_node *
855: roff_node_alloc(struct roff_man *man, int line, int pos,
856: enum roff_type type, int tok)
857: {
858: struct roff_node *n;
859:
860: n = mandoc_calloc(1, sizeof(*n));
861: n->line = line;
862: n->pos = pos;
863: n->tok = tok;
864: n->type = type;
865: n->sec = man->lastsec;
866:
867: if (man->flags & MDOC_SYNOPSIS)
1.285 schwarze 868: n->flags |= NODE_SYNPRETTY;
1.266 schwarze 869: else
1.285 schwarze 870: n->flags &= ~NODE_SYNPRETTY;
1.266 schwarze 871: if (man->flags & MDOC_NEWLINE)
1.285 schwarze 872: n->flags |= NODE_LINE;
1.266 schwarze 873: man->flags &= ~MDOC_NEWLINE;
874:
1.277 schwarze 875: return n;
1.266 schwarze 876: }
877:
878: void
879: roff_node_append(struct roff_man *man, struct roff_node *n)
880: {
881:
882: switch (man->next) {
883: case ROFF_NEXT_SIBLING:
1.281 schwarze 884: if (man->last->next != NULL) {
885: n->next = man->last->next;
886: man->last->next->prev = n;
887: } else
888: man->last->parent->last = n;
1.266 schwarze 889: man->last->next = n;
890: n->prev = man->last;
891: n->parent = man->last->parent;
892: break;
893: case ROFF_NEXT_CHILD:
1.287 schwarze 894: if (man->last->child != NULL) {
895: n->next = man->last->child;
896: man->last->child->prev = n;
897: } else
898: man->last->last = n;
1.266 schwarze 899: man->last->child = n;
900: n->parent = man->last;
901: break;
902: default:
903: abort();
904: }
1.282 schwarze 905: man->last = n;
1.266 schwarze 906:
907: switch (n->type) {
908: case ROFFT_HEAD:
909: n->parent->head = n;
910: break;
911: case ROFFT_BODY:
1.282 schwarze 912: if (n->end != ENDBODY_NOT)
913: return;
1.266 schwarze 914: n->parent->body = n;
915: break;
916: case ROFFT_TAIL:
917: n->parent->tail = n;
918: break;
919: default:
1.282 schwarze 920: return;
1.266 schwarze 921: }
1.282 schwarze 922:
923: /*
924: * Copy over the normalised-data pointer of our parent. Not
925: * everybody has one, but copying a null pointer is fine.
926: */
927:
928: n->norm = n->parent->norm;
929: assert(n->parent->type == ROFFT_BLOCK);
1.266 schwarze 930: }
931:
1.267 schwarze 932: void
933: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
934: {
935: struct roff_node *n;
936:
937: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
938: n->string = roff_strdup(man->roff, word);
939: roff_node_append(man, n);
1.286 schwarze 940: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 941: man->next = ROFF_NEXT_SIBLING;
942: }
943:
944: void
945: roff_word_append(struct roff_man *man, const char *word)
946: {
947: struct roff_node *n;
948: char *addstr, *newstr;
949:
950: n = man->last;
951: addstr = roff_strdup(man->roff, word);
952: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
953: free(addstr);
954: free(n->string);
955: n->string = newstr;
956: man->next = ROFF_NEXT_SIBLING;
1.268 schwarze 957: }
958:
959: void
960: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
961: {
962: struct roff_node *n;
963:
964: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
965: roff_node_append(man, n);
966: man->next = ROFF_NEXT_CHILD;
967: }
968:
969: struct roff_node *
970: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
971: {
972: struct roff_node *n;
973:
974: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
975: roff_node_append(man, n);
976: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 977: return n;
1.267 schwarze 978: }
979:
1.266 schwarze 980: struct roff_node *
981: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
982: {
983: struct roff_node *n;
984:
985: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
986: roff_node_append(man, n);
987: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 988: return n;
1.266 schwarze 989: }
990:
991: struct roff_node *
992: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
993: {
994: struct roff_node *n;
995:
996: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
997: roff_node_append(man, n);
998: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 999: return n;
1.267 schwarze 1000: }
1001:
1002: void
1003: roff_addeqn(struct roff_man *man, const struct eqn *eqn)
1004: {
1005: struct roff_node *n;
1006:
1007: n = roff_node_alloc(man, eqn->ln, eqn->pos, ROFFT_EQN, TOKEN_NONE);
1008: n->eqn = eqn;
1009: if (eqn->ln > man->last->line)
1.285 schwarze 1010: n->flags |= NODE_LINE;
1.267 schwarze 1011: roff_node_append(man, n);
1012: man->next = ROFF_NEXT_SIBLING;
1013: }
1014:
1015: void
1016: roff_addtbl(struct roff_man *man, const struct tbl_span *tbl)
1017: {
1018: struct roff_node *n;
1019:
1020: if (man->macroset == MACROSET_MAN)
1.302 schwarze 1021: man_breakscope(man, ROFF_TS);
1.267 schwarze 1022: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
1023: n->span = tbl;
1024: roff_node_append(man, n);
1.286 schwarze 1025: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 1026: man->next = ROFF_NEXT_SIBLING;
1.266 schwarze 1027: }
1028:
1029: void
1030: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1031: {
1032:
1033: /* Adjust siblings. */
1034:
1035: if (n->prev)
1036: n->prev->next = n->next;
1037: if (n->next)
1038: n->next->prev = n->prev;
1039:
1040: /* Adjust parent. */
1041:
1042: if (n->parent != NULL) {
1043: if (n->parent->child == n)
1044: n->parent->child = n->next;
1045: if (n->parent->last == n)
1046: n->parent->last = n->prev;
1047: }
1048:
1049: /* Adjust parse point. */
1050:
1051: if (man == NULL)
1052: return;
1053: if (man->last == n) {
1054: if (n->prev == NULL) {
1055: man->last = n->parent;
1056: man->next = ROFF_NEXT_CHILD;
1057: } else {
1058: man->last = n->prev;
1059: man->next = ROFF_NEXT_SIBLING;
1060: }
1061: }
1062: if (man->first == n)
1063: man->first = NULL;
1064: }
1065:
1066: void
1067: roff_node_free(struct roff_node *n)
1068: {
1069:
1070: if (n->args != NULL)
1071: mdoc_argv_free(n->args);
1072: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1073: free(n->norm);
1074: free(n->string);
1075: free(n);
1076: }
1077:
1078: void
1079: roff_node_delete(struct roff_man *man, struct roff_node *n)
1080: {
1081:
1082: while (n->child != NULL)
1083: roff_node_delete(man, n->child);
1084: roff_node_unlink(man, n);
1085: roff_node_free(n);
1.269 schwarze 1086: }
1087:
1088: void
1089: deroff(char **dest, const struct roff_node *n)
1090: {
1091: char *cp;
1092: size_t sz;
1093:
1094: if (n->type != ROFFT_TEXT) {
1095: for (n = n->child; n != NULL; n = n->next)
1096: deroff(dest, n);
1097: return;
1098: }
1099:
1.288 schwarze 1100: /* Skip leading whitespace. */
1.269 schwarze 1101:
1.288 schwarze 1102: for (cp = n->string; *cp != '\0'; cp++) {
1.289 schwarze 1103: if (cp[0] == '\\' && cp[1] != '\0' &&
1104: strchr(" %&0^|~", cp[1]) != NULL)
1.269 schwarze 1105: cp++;
1.288 schwarze 1106: else if ( ! isspace((unsigned char)*cp))
1.269 schwarze 1107: break;
1108: }
1109:
1.289 schwarze 1110: /* Skip trailing backslash. */
1111:
1112: sz = strlen(cp);
1.290 schwarze 1113: if (sz > 0 && cp[sz - 1] == '\\')
1.289 schwarze 1114: sz--;
1115:
1.269 schwarze 1116: /* Skip trailing whitespace. */
1117:
1.289 schwarze 1118: for (; sz; sz--)
1.269 schwarze 1119: if ( ! isspace((unsigned char)cp[sz-1]))
1120: break;
1121:
1122: /* Skip empty strings. */
1123:
1124: if (sz == 0)
1125: return;
1126:
1127: if (*dest == NULL) {
1128: *dest = mandoc_strndup(cp, sz);
1129: return;
1130: }
1131:
1132: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1133: free(*dest);
1134: *dest = cp;
1.266 schwarze 1135: }
1136:
1137: /* --- main functions of the roff parser ---------------------------------- */
1138:
1.94 kristaps 1139: /*
1.206 schwarze 1140: * In the current line, expand escape sequences that tend to get
1141: * used in numerical expressions and conditional requests.
1142: * Also check the syntax of the remaining escape sequences.
1.154 kristaps 1143: */
1.172 schwarze 1144: static enum rofferr
1.238 schwarze 1145: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.94 kristaps 1146: {
1.208 schwarze 1147: char ubuf[24]; /* buffer to print the number */
1.205 schwarze 1148: const char *start; /* start of the string to process */
1.209 schwarze 1149: char *stesc; /* start of an escape sequence ('\\') */
1.108 schwarze 1150: const char *stnam; /* start of the name, after "[(*" */
1151: const char *cp; /* end of the name, e.g. before ']' */
1152: const char *res; /* the string to be substituted */
1.238 schwarze 1153: char *nbuf; /* new buffer to copy buf->buf to */
1.181 schwarze 1154: size_t maxl; /* expected length of the escape name */
1155: size_t naml; /* actual length of the escape name */
1.237 schwarze 1156: enum mandoc_esc esc; /* type of the escape sequence */
1157: int inaml; /* length returned from mandoc_escape() */
1.181 schwarze 1158: int expand_count; /* to avoid infinite loops */
1.206 schwarze 1159: int npos; /* position in numeric expression */
1.218 schwarze 1160: int arg_complete; /* argument not interrupted by eol */
1.303 schwarze 1161: int done; /* no more input available */
1.206 schwarze 1162: char term; /* character terminating the escape */
1.94 kristaps 1163:
1.303 schwarze 1164: /* Search forward for comments. */
1165:
1166: done = 0;
1167: start = buf->buf + pos;
1168: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1169: if (stesc[0] != r->escape || stesc[1] == '\0')
1170: continue;
1171: stesc++;
1172: if (*stesc != '"' && *stesc != '#')
1173: continue;
1174: cp = strchr(stesc--, '\0') - 1;
1175: if (*cp == '\n') {
1176: done = 1;
1177: cp--;
1178: }
1179: if (*cp == ' ' || *cp == '\t')
1180: mandoc_msg(MANDOCERR_SPACE_EOL, r->parse,
1181: ln, cp - buf->buf, NULL);
1182: while (stesc > start && stesc[-1] == ' ')
1183: stesc--;
1184: *stesc = '\0';
1185: break;
1186: }
1187: if (stesc == start)
1188: return ROFF_CONT;
1189: stesc--;
1190:
1191: /* Notice the end of the input. */
1192:
1193: if (*stesc == '\n') {
1194: *stesc-- = '\0';
1195: done = 1;
1196: }
1197:
1.170 schwarze 1198: expand_count = 0;
1.303 schwarze 1199: while (stesc >= start) {
1.170 schwarze 1200:
1.205 schwarze 1201: /* Search backwards for the next backslash. */
1202:
1.303 schwarze 1203: if (*stesc != r->escape) {
1204: if (*stesc == '\\') {
1205: *stesc = '\0';
1206: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1207: buf->buf, stesc + 1) + 1;
1208: start = nbuf + pos;
1209: stesc = nbuf + (stesc - buf->buf);
1210: free(buf->buf);
1211: buf->buf = nbuf;
1212: }
1213: stesc--;
1.205 schwarze 1214: continue;
1.303 schwarze 1215: }
1.205 schwarze 1216:
1217: /* If it is escaped, skip it. */
1218:
1219: for (cp = stesc - 1; cp >= start; cp--)
1.303 schwarze 1220: if (*cp != r->escape)
1.205 schwarze 1221: break;
1222:
1.238 schwarze 1223: if ((stesc - cp) % 2 == 0) {
1.303 schwarze 1224: while (stesc > cp)
1225: *stesc-- = '\\';
1.205 schwarze 1226: continue;
1.303 schwarze 1227: } else if (stesc[1] != '\0') {
1228: *stesc = '\\';
1229: } else {
1230: *stesc-- = '\0';
1231: if (done)
1232: continue;
1233: else
1234: return ROFF_APPEND;
1.205 schwarze 1235: }
1.108 schwarze 1236:
1.206 schwarze 1237: /* Decide whether to expand or to check only. */
1.108 schwarze 1238:
1.206 schwarze 1239: term = '\0';
1.205 schwarze 1240: cp = stesc + 1;
1.181 schwarze 1241: switch (*cp) {
1.207 schwarze 1242: case '*':
1.181 schwarze 1243: res = NULL;
1244: break;
1.207 schwarze 1245: case 'B':
1246: case 'w':
1.206 schwarze 1247: term = cp[1];
1248: /* FALLTHROUGH */
1.207 schwarze 1249: case 'n':
1.181 schwarze 1250: res = ubuf;
1251: break;
1252: default:
1.237 schwarze 1253: esc = mandoc_escape(&cp, &stnam, &inaml);
1254: if (esc == ESCAPE_ERROR ||
1255: (esc == ESCAPE_SPECIAL &&
1.279 schwarze 1256: mchars_spec2cp(stnam, inaml) < 0))
1.219 schwarze 1257: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.238 schwarze 1258: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1259: "%.*s", (int)(cp - stesc), stesc);
1.303 schwarze 1260: stesc--;
1.205 schwarze 1261: continue;
1.152 kristaps 1262: }
1263:
1.205 schwarze 1264: if (EXPAND_LIMIT < ++expand_count) {
1265: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.238 schwarze 1266: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1267: return ROFF_IGN;
1.205 schwarze 1268: }
1.108 schwarze 1269:
1270: /*
1271: * The third character decides the length
1.181 schwarze 1272: * of the name of the string or register.
1.108 schwarze 1273: * Save a pointer to the name.
1274: */
1275:
1.238 schwarze 1276: if (term == '\0') {
1.206 schwarze 1277: switch (*++cp) {
1.207 schwarze 1278: case '\0':
1.206 schwarze 1279: maxl = 0;
1280: break;
1.207 schwarze 1281: case '(':
1.206 schwarze 1282: cp++;
1283: maxl = 2;
1284: break;
1.207 schwarze 1285: case '[':
1.206 schwarze 1286: cp++;
1287: term = ']';
1288: maxl = 0;
1289: break;
1290: default:
1291: maxl = 1;
1292: break;
1293: }
1294: } else {
1295: cp += 2;
1.94 kristaps 1296: maxl = 0;
1297: }
1.108 schwarze 1298: stnam = cp;
1.94 kristaps 1299:
1.108 schwarze 1300: /* Advance to the end of the name. */
1.94 kristaps 1301:
1.253 schwarze 1302: naml = 0;
1.218 schwarze 1303: arg_complete = 1;
1.253 schwarze 1304: while (maxl == 0 || naml < maxl) {
1.238 schwarze 1305: if (*cp == '\0') {
1.219 schwarze 1306: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 1307: ln, (int)(stesc - buf->buf), stesc);
1.218 schwarze 1308: arg_complete = 0;
1.206 schwarze 1309: break;
1.153 kristaps 1310: }
1.238 schwarze 1311: if (maxl == 0 && *cp == term) {
1.206 schwarze 1312: cp++;
1.253 schwarze 1313: break;
1314: }
1315: if (*cp++ != '\\' || stesc[1] != 'w') {
1316: naml++;
1317: continue;
1318: }
1319: switch (mandoc_escape(&cp, NULL, NULL)) {
1320: case ESCAPE_SPECIAL:
1321: case ESCAPE_UNICODE:
1322: case ESCAPE_NUMBERED:
1323: case ESCAPE_OVERSTRIKE:
1324: naml++;
1325: break;
1326: default:
1.94 kristaps 1327: break;
1.206 schwarze 1328: }
1.94 kristaps 1329: }
1330:
1.108 schwarze 1331: /*
1332: * Retrieve the replacement string; if it is
1333: * undefined, resume searching for escapes.
1334: */
1335:
1.206 schwarze 1336: switch (stesc[1]) {
1.207 schwarze 1337: case '*':
1.218 schwarze 1338: if (arg_complete)
1339: res = roff_getstrn(r, stnam, naml);
1.206 schwarze 1340: break;
1.207 schwarze 1341: case 'B':
1.206 schwarze 1342: npos = 0;
1.218 schwarze 1343: ubuf[0] = arg_complete &&
1.261 schwarze 1344: roff_evalnum(r, ln, stnam, &npos,
1345: NULL, ROFFNUM_SCALE) &&
1.218 schwarze 1346: stnam + npos + 1 == cp ? '1' : '0';
1.206 schwarze 1347: ubuf[1] = '\0';
1348: break;
1.207 schwarze 1349: case 'n':
1.218 schwarze 1350: if (arg_complete)
1351: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1352: roff_getregn(r, stnam, naml));
1353: else
1354: ubuf[0] = '\0';
1.206 schwarze 1355: break;
1.207 schwarze 1356: case 'w':
1.218 schwarze 1357: /* use even incomplete args */
1.208 schwarze 1358: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.206 schwarze 1359: 24 * (int)naml);
1360: break;
1361: }
1.94 kristaps 1362:
1.238 schwarze 1363: if (res == NULL) {
1.219 schwarze 1364: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1365: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1366: "%.*s", (int)naml, stnam);
1.142 kristaps 1367: res = "";
1.246 schwarze 1368: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1369: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1370: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1371: return ROFF_IGN;
1.94 kristaps 1372: }
1373:
1.108 schwarze 1374: /* Replace the escape sequence by the string. */
1375:
1.209 schwarze 1376: *stesc = '\0';
1.238 schwarze 1377: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1378: buf->buf, res, cp) + 1;
1.94 kristaps 1379:
1.205 schwarze 1380: /* Prepare for the next replacement. */
1.94 kristaps 1381:
1.205 schwarze 1382: start = nbuf + pos;
1.238 schwarze 1383: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1384: free(buf->buf);
1385: buf->buf = nbuf;
1.154 kristaps 1386: }
1.277 schwarze 1387: return ROFF_CONT;
1.154 kristaps 1388: }
1389:
1390: /*
1.275 schwarze 1391: * Process text streams.
1.154 kristaps 1392: */
1393: static enum rofferr
1.305 ! schwarze 1394: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.154 kristaps 1395: {
1396: size_t sz;
1397: const char *start;
1.178 schwarze 1398: char *p;
1399: int isz;
1.154 kristaps 1400: enum mandoc_esc esc;
1401:
1.275 schwarze 1402: /* Spring the input line trap. */
1403:
1404: if (roffit_lines == 1) {
1405: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1406: free(buf->buf);
1407: buf->buf = p;
1408: buf->sz = isz + 1;
1409: *offs = 0;
1410: free(roffit_macro);
1411: roffit_lines = 0;
1.277 schwarze 1412: return ROFF_REPARSE;
1.275 schwarze 1413: } else if (roffit_lines > 1)
1414: --roffit_lines;
1415:
1.305 ! schwarze 1416: if (roffce_node != NULL && buf->buf[pos] != '\0') {
! 1417: if (roffce_lines < 1) {
! 1418: r->man->last = roffce_node;
! 1419: r->man->next = ROFF_NEXT_SIBLING;
! 1420: roffce_lines = 0;
! 1421: roffce_node = NULL;
! 1422: } else
! 1423: roffce_lines--;
! 1424: }
! 1425:
1.275 schwarze 1426: /* Convert all breakable hyphens into ASCII_HYPH. */
1427:
1.238 schwarze 1428: start = p = buf->buf + pos;
1.154 kristaps 1429:
1.238 schwarze 1430: while (*p != '\0') {
1.154 kristaps 1431: sz = strcspn(p, "-\\");
1432: p += sz;
1433:
1.238 schwarze 1434: if (*p == '\0')
1.159 kristaps 1435: break;
1436:
1.238 schwarze 1437: if (*p == '\\') {
1.154 kristaps 1438: /* Skip over escapes. */
1439: p++;
1.189 schwarze 1440: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.238 schwarze 1441: if (esc == ESCAPE_ERROR)
1.154 kristaps 1442: break;
1.264 schwarze 1443: while (*p == '-')
1444: p++;
1.155 kristaps 1445: continue;
1.159 kristaps 1446: } else if (p == start) {
1.158 kristaps 1447: p++;
1.155 kristaps 1448: continue;
1.158 kristaps 1449: }
1.155 kristaps 1450:
1.171 schwarze 1451: if (isalpha((unsigned char)p[-1]) &&
1452: isalpha((unsigned char)p[1]))
1.155 kristaps 1453: *p = ASCII_HYPH;
1454: p++;
1.94 kristaps 1455: }
1.277 schwarze 1456: return ROFF_CONT;
1.94 kristaps 1457: }
1458:
1.67 kristaps 1459: enum rofferr
1.238 schwarze 1460: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.67 kristaps 1461: {
1.294 schwarze 1462: enum roff_tok t;
1.109 kristaps 1463: enum rofferr e;
1.238 schwarze 1464: int pos; /* parse point */
1.243 schwarze 1465: int spos; /* saved parse point for messages */
1.238 schwarze 1466: int ppos; /* original offset in buf->buf */
1467: int ctl; /* macro line (boolean) */
1468:
1469: ppos = pos = *offs;
1.79 kristaps 1470:
1.230 schwarze 1471: /* Handle in-line equation delimiters. */
1472:
1.236 schwarze 1473: if (r->tbl == NULL &&
1474: r->last_eqn != NULL && r->last_eqn->delim &&
1.230 schwarze 1475: (r->eqn == NULL || r->eqn_inline)) {
1.238 schwarze 1476: e = roff_eqndelim(r, buf, pos);
1.230 schwarze 1477: if (e == ROFF_REPARSE)
1.277 schwarze 1478: return e;
1.230 schwarze 1479: assert(e == ROFF_CONT);
1480: }
1481:
1482: /* Expand some escape sequences. */
1.94 kristaps 1483:
1.238 schwarze 1484: e = roff_res(r, buf, ln, pos);
1.303 schwarze 1485: if (e == ROFF_IGN || e == ROFF_APPEND)
1.277 schwarze 1486: return e;
1.238 schwarze 1487: assert(e == ROFF_CONT);
1.94 kristaps 1488:
1.238 schwarze 1489: ctl = roff_getcontrol(r, buf->buf, &pos);
1.130 kristaps 1490:
1.94 kristaps 1491: /*
1.79 kristaps 1492: * First, if a scope is open and we're not a macro, pass the
1.252 schwarze 1493: * text through the macro's filter.
1494: * Equations process all content themselves.
1495: * Tables process almost all content themselves, but we want
1496: * to warn about macros before passing it there.
1.79 kristaps 1497: */
1.74 kristaps 1498:
1.252 schwarze 1499: if (r->last != NULL && ! ctl) {
1.78 kristaps 1500: t = r->last->tok;
1.238 schwarze 1501: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.294 schwarze 1502: if (e == ROFF_IGN)
1.277 schwarze 1503: return e;
1.294 schwarze 1504: assert(e == ROFF_CONT);
1.182 schwarze 1505: }
1.252 schwarze 1506: if (r->eqn != NULL)
1.277 schwarze 1507: return eqn_read(&r->eqn, ln, buf->buf, ppos, offs);
1.252 schwarze 1508: if (r->tbl != NULL && ( ! ctl || buf->buf[pos] == '\0'))
1.277 schwarze 1509: return tbl_read(r->tbl, ln, buf->buf, ppos);
1.252 schwarze 1510: if ( ! ctl)
1.305 ! schwarze 1511: return roff_parsetext(r, buf, pos, offs);
1.228 schwarze 1512:
1513: /* Skip empty request lines. */
1514:
1.238 schwarze 1515: if (buf->buf[pos] == '"') {
1.228 schwarze 1516: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1517: ln, pos, NULL);
1.277 schwarze 1518: return ROFF_IGN;
1.238 schwarze 1519: } else if (buf->buf[pos] == '\0')
1.277 schwarze 1520: return ROFF_IGN;
1.67 kristaps 1521:
1.79 kristaps 1522: /*
1523: * If a scope is open, go to the child handler for that macro,
1524: * as it may want to preprocess before doing anything with it.
1.125 kristaps 1525: * Don't do so if an equation is open.
1.79 kristaps 1526: */
1.78 kristaps 1527:
1.79 kristaps 1528: if (r->last) {
1529: t = r->last->tok;
1.277 schwarze 1530: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1531: }
1.78 kristaps 1532:
1.243 schwarze 1533: /* No scope is open. This is a new request or macro. */
1534:
1535: spos = pos;
1536: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1537:
1538: /* Tables ignore most macros. */
1539:
1.294 schwarze 1540: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS)) {
1.243 schwarze 1541: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1542: ln, pos, buf->buf + spos);
1.257 schwarze 1543: if (t == ROFF_TS)
1.277 schwarze 1544: return ROFF_IGN;
1.257 schwarze 1545: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1546: pos++;
1.291 schwarze 1547: while (buf->buf[pos] == ' ')
1.257 schwarze 1548: pos++;
1.277 schwarze 1549: return tbl_read(r->tbl, ln, buf->buf, pos);
1.243 schwarze 1550: }
1551:
1.305 ! schwarze 1552: /* For now, let high level macros abort .ce mode. */
! 1553:
! 1554: if (ctl && roffce_node != NULL &&
! 1555: (t == TOKEN_NONE || t == ROFF_EQ || t == ROFF_TS)) {
! 1556: r->man->last = roffce_node;
! 1557: r->man->next = ROFF_NEXT_SIBLING;
! 1558: roffce_lines = 0;
! 1559: roffce_node = NULL;
! 1560: }
! 1561:
1.79 kristaps 1562: /*
1.243 schwarze 1563: * This is neither a roff request nor a user-defined macro.
1564: * Let the standard macro set parsers handle it.
1.79 kristaps 1565: */
1.67 kristaps 1566:
1.294 schwarze 1567: if (t == TOKEN_NONE)
1.277 schwarze 1568: return ROFF_CONT;
1.243 schwarze 1569:
1570: /* Execute a roff request or a user defined macro. */
1.67 kristaps 1571:
1.296 schwarze 1572: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.74 kristaps 1573: }
1574:
1.117 kristaps 1575: void
1.74 kristaps 1576: roff_endparse(struct roff *r)
1577: {
1578:
1.110 kristaps 1579: if (r->last)
1.221 schwarze 1580: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1581: r->last->line, r->last->col,
1.295 schwarze 1582: roff_name[r->last->tok]);
1.117 kristaps 1583:
1.125 kristaps 1584: if (r->eqn) {
1.221 schwarze 1585: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1586: r->eqn->eqn.ln, r->eqn->eqn.pos, "EQ");
1.151 kristaps 1587: eqn_end(&r->eqn);
1.125 kristaps 1588: }
1589:
1.117 kristaps 1590: if (r->tbl) {
1.221 schwarze 1591: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1592: r->tbl->line, r->tbl->pos, "TS");
1.151 kristaps 1593: tbl_end(&r->tbl);
1.117 kristaps 1594: }
1.67 kristaps 1595: }
1596:
1597: /*
1598: * Parse a roff node's type from the input buffer. This must be in the
1599: * form of ".foo xxx" in the usual way.
1600: */
1.294 schwarze 1601: static enum roff_tok
1.214 schwarze 1602: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.67 kristaps 1603: {
1.214 schwarze 1604: char *cp;
1.106 kristaps 1605: const char *mac;
1606: size_t maclen;
1.294 schwarze 1607: enum roff_tok t;
1.67 kristaps 1608:
1.214 schwarze 1609: cp = buf + *pos;
1610:
1611: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.294 schwarze 1612: return TOKEN_NONE;
1.67 kristaps 1613:
1.214 schwarze 1614: mac = cp;
1615: maclen = roff_getname(r, &cp, ln, ppos);
1.67 kristaps 1616:
1.106 kristaps 1617: t = (r->current_string = roff_getstrn(r, mac, maclen))
1.295 schwarze 1618: ? ROFF_USERDEF : roffhash_find(r->reqtab, mac, maclen);
1.67 kristaps 1619:
1.294 schwarze 1620: if (t != TOKEN_NONE)
1.214 schwarze 1621: *pos = cp - buf;
1.67 kristaps 1622:
1.277 schwarze 1623: return t;
1.67 kristaps 1624: }
1625:
1.266 schwarze 1626: /* --- handling of request blocks ----------------------------------------- */
1627:
1.67 kristaps 1628: static enum rofferr
1.76 kristaps 1629: roff_cblock(ROFF_ARGS)
1.67 kristaps 1630: {
1631:
1.79 kristaps 1632: /*
1633: * A block-close `..' should only be invoked as a child of an
1634: * ignore macro, otherwise raise a warning and just ignore it.
1635: */
1636:
1.238 schwarze 1637: if (r->last == NULL) {
1.221 schwarze 1638: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1639: ln, ppos, "..");
1.277 schwarze 1640: return ROFF_IGN;
1.76 kristaps 1641: }
1.67 kristaps 1642:
1.81 kristaps 1643: switch (r->last->tok) {
1.207 schwarze 1644: case ROFF_am:
1.220 schwarze 1645: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.207 schwarze 1646: case ROFF_ami:
1647: case ROFF_de:
1.108 schwarze 1648: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.207 schwarze 1649: case ROFF_dei:
1650: case ROFF_ig:
1.81 kristaps 1651: break;
1652: default:
1.221 schwarze 1653: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1654: ln, ppos, "..");
1.277 schwarze 1655: return ROFF_IGN;
1.76 kristaps 1656: }
1.67 kristaps 1657:
1.238 schwarze 1658: if (buf->buf[pos] != '\0')
1.217 schwarze 1659: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 1660: ".. %s", buf->buf + pos);
1.71 kristaps 1661:
1662: roffnode_pop(r);
1.76 kristaps 1663: roffnode_cleanscope(r);
1.277 schwarze 1664: return ROFF_IGN;
1.71 kristaps 1665:
1.67 kristaps 1666: }
1667:
1.76 kristaps 1668: static void
1669: roffnode_cleanscope(struct roff *r)
1.67 kristaps 1670: {
1671:
1.76 kristaps 1672: while (r->last) {
1.173 schwarze 1673: if (--r->last->endspan != 0)
1.76 kristaps 1674: break;
1675: roffnode_pop(r);
1676: }
1.67 kristaps 1677: }
1678:
1.195 schwarze 1679: static void
1680: roff_ccond(struct roff *r, int ln, int ppos)
1.74 kristaps 1681: {
1682:
1.76 kristaps 1683: if (NULL == r->last) {
1.221 schwarze 1684: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1685: ln, ppos, "\\}");
1.195 schwarze 1686: return;
1.76 kristaps 1687: }
1688:
1.82 kristaps 1689: switch (r->last->tok) {
1.207 schwarze 1690: case ROFF_el:
1691: case ROFF_ie:
1692: case ROFF_if:
1.82 kristaps 1693: break;
1694: default:
1.221 schwarze 1695: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1696: ln, ppos, "\\}");
1.195 schwarze 1697: return;
1.75 kristaps 1698: }
1699:
1.76 kristaps 1700: if (r->last->endspan > -1) {
1.221 schwarze 1701: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1702: ln, ppos, "\\}");
1.195 schwarze 1703: return;
1.76 kristaps 1704: }
1705:
1.75 kristaps 1706: roffnode_pop(r);
1.76 kristaps 1707: roffnode_cleanscope(r);
1.195 schwarze 1708: return;
1.76 kristaps 1709: }
1710:
1711: static enum rofferr
1.80 kristaps 1712: roff_block(ROFF_ARGS)
1.76 kristaps 1713: {
1.220 schwarze 1714: const char *name;
1715: char *iname, *cp;
1.213 schwarze 1716: size_t namesz;
1.106 kristaps 1717:
1.220 schwarze 1718: /* Ignore groff compatibility mode for now. */
1.76 kristaps 1719:
1.238 schwarze 1720: if (tok == ROFF_de1)
1.220 schwarze 1721: tok = ROFF_de;
1.251 schwarze 1722: else if (tok == ROFF_dei1)
1723: tok = ROFF_dei;
1.238 schwarze 1724: else if (tok == ROFF_am1)
1.220 schwarze 1725: tok = ROFF_am;
1.251 schwarze 1726: else if (tok == ROFF_ami1)
1727: tok = ROFF_ami;
1.220 schwarze 1728:
1729: /* Parse the macro name argument. */
1730:
1.238 schwarze 1731: cp = buf->buf + pos;
1732: if (tok == ROFF_ig) {
1.220 schwarze 1733: iname = NULL;
1734: namesz = 0;
1735: } else {
1736: iname = cp;
1737: namesz = roff_getname(r, &cp, ln, ppos);
1738: iname[namesz] = '\0';
1739: }
1.107 kristaps 1740:
1.220 schwarze 1741: /* Resolve the macro name argument if it is indirect. */
1.107 kristaps 1742:
1.238 schwarze 1743: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1744: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.220 schwarze 1745: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1746: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1747: "%.*s", (int)namesz, iname);
1748: namesz = 0;
1749: } else
1750: namesz = strlen(name);
1751: } else
1752: name = iname;
1.107 kristaps 1753:
1.238 schwarze 1754: if (namesz == 0 && tok != ROFF_ig) {
1.220 schwarze 1755: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1.295 schwarze 1756: ln, ppos, roff_name[tok]);
1.277 schwarze 1757: return ROFF_IGN;
1.220 schwarze 1758: }
1.80 kristaps 1759:
1.106 kristaps 1760: roffnode_push(r, tok, name, ln, ppos);
1761:
1762: /*
1763: * At the beginning of a `de' macro, clear the existing string
1764: * with the same name, if there is one. New content will be
1.193 schwarze 1765: * appended from roff_block_text() in multiline mode.
1.106 kristaps 1766: */
1.107 kristaps 1767:
1.238 schwarze 1768: if (tok == ROFF_de || tok == ROFF_dei)
1.213 schwarze 1769: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.76 kristaps 1770:
1.238 schwarze 1771: if (*cp == '\0')
1.277 schwarze 1772: return ROFF_IGN;
1.78 kristaps 1773:
1.220 schwarze 1774: /* Get the custom end marker. */
1.107 kristaps 1775:
1.220 schwarze 1776: iname = cp;
1.213 schwarze 1777: namesz = roff_getname(r, &cp, ln, ppos);
1.220 schwarze 1778:
1779: /* Resolve the end marker if it is indirect. */
1780:
1.238 schwarze 1781: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1782: if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
1.220 schwarze 1783: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1784: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1785: "%.*s", (int)namesz, iname);
1786: namesz = 0;
1787: } else
1788: namesz = strlen(name);
1789: } else
1790: name = iname;
1791:
1.213 schwarze 1792: if (namesz)
1793: r->last->end = mandoc_strndup(name, namesz);
1.78 kristaps 1794:
1.238 schwarze 1795: if (*cp != '\0')
1.217 schwarze 1796: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1.295 schwarze 1797: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.74 kristaps 1798:
1.277 schwarze 1799: return ROFF_IGN;
1.78 kristaps 1800: }
1801:
1802: static enum rofferr
1.80 kristaps 1803: roff_block_sub(ROFF_ARGS)
1.79 kristaps 1804: {
1.294 schwarze 1805: enum roff_tok t;
1.79 kristaps 1806: int i, j;
1807:
1808: /*
1809: * First check whether a custom macro exists at this level. If
1810: * it does, then check against it. This is some of groff's
1811: * stranger behaviours. If we encountered a custom end-scope
1812: * tag and that tag also happens to be a "real" macro, then we
1813: * need to try interpreting it again as a real macro. If it's
1814: * not, then return ignore. Else continue.
1815: */
1816:
1817: if (r->last->end) {
1.130 kristaps 1818: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.238 schwarze 1819: if (buf->buf[i] != r->last->end[j])
1.79 kristaps 1820: break;
1821:
1.238 schwarze 1822: if (r->last->end[j] == '\0' &&
1823: (buf->buf[i] == '\0' ||
1824: buf->buf[i] == ' ' ||
1825: buf->buf[i] == '\t')) {
1.79 kristaps 1826: roffnode_pop(r);
1827: roffnode_cleanscope(r);
1828:
1.238 schwarze 1829: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.130 kristaps 1830: i++;
1831:
1832: pos = i;
1.238 schwarze 1833: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.294 schwarze 1834: TOKEN_NONE)
1.277 schwarze 1835: return ROFF_RERUN;
1836: return ROFF_IGN;
1.79 kristaps 1837: }
1838: }
1839:
1840: /*
1841: * If we have no custom end-query or lookup failed, then try
1842: * pulling it out of the hashtable.
1843: */
1844:
1.238 schwarze 1845: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.79 kristaps 1846:
1.238 schwarze 1847: if (t != ROFF_cblock) {
1848: if (tok != ROFF_ig)
1849: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.277 schwarze 1850: return ROFF_IGN;
1.106 kristaps 1851: }
1.79 kristaps 1852:
1.277 schwarze 1853: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1854: }
1855:
1856: static enum rofferr
1.80 kristaps 1857: roff_block_text(ROFF_ARGS)
1.78 kristaps 1858: {
1859:
1.238 schwarze 1860: if (tok != ROFF_ig)
1861: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.106 kristaps 1862:
1.277 schwarze 1863: return ROFF_IGN;
1.78 kristaps 1864: }
1865:
1866: static enum rofferr
1.82 kristaps 1867: roff_cond_sub(ROFF_ARGS)
1868: {
1.294 schwarze 1869: enum roff_tok t;
1.139 kristaps 1870: char *ep;
1.198 schwarze 1871: int rr;
1.82 kristaps 1872:
1873: rr = r->last->rule;
1.139 kristaps 1874: roffnode_cleanscope(r);
1.238 schwarze 1875: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.82 kristaps 1876:
1.139 kristaps 1877: /*
1.177 schwarze 1878: * Fully handle known macros when they are structurally
1879: * required or when the conditional evaluated to true.
1.87 kristaps 1880: */
1881:
1.294 schwarze 1882: if (t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT))
1.277 schwarze 1883: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.144 kristaps 1884:
1.196 schwarze 1885: /*
1886: * If `\}' occurs on a macro line without a preceding macro,
1887: * drop the line completely.
1888: */
1889:
1.238 schwarze 1890: ep = buf->buf + pos;
1891: if (ep[0] == '\\' && ep[1] == '}')
1.198 schwarze 1892: rr = 0;
1.196 schwarze 1893:
1.177 schwarze 1894: /* Always check for the closing delimiter `\}'. */
1.144 kristaps 1895:
1.238 schwarze 1896: while ((ep = strchr(ep, '\\')) != NULL) {
1897: if (*(++ep) == '}') {
1.197 schwarze 1898: *ep = '&';
1.238 schwarze 1899: roff_ccond(r, ln, ep - buf->buf - 1);
1.197 schwarze 1900: }
1.247 schwarze 1901: if (*ep != '\0')
1902: ++ep;
1.177 schwarze 1903: }
1.277 schwarze 1904: return rr ? ROFF_CONT : ROFF_IGN;
1.82 kristaps 1905: }
1906:
1907: static enum rofferr
1908: roff_cond_text(ROFF_ARGS)
1.78 kristaps 1909: {
1.140 kristaps 1910: char *ep;
1.198 schwarze 1911: int rr;
1.82 kristaps 1912:
1913: rr = r->last->rule;
1.140 kristaps 1914: roffnode_cleanscope(r);
1.82 kristaps 1915:
1.238 schwarze 1916: ep = buf->buf + pos;
1917: while ((ep = strchr(ep, '\\')) != NULL) {
1918: if (*(++ep) == '}') {
1.197 schwarze 1919: *ep = '&';
1.238 schwarze 1920: roff_ccond(r, ln, ep - buf->buf - 1);
1.197 schwarze 1921: }
1.247 schwarze 1922: if (*ep != '\0')
1923: ++ep;
1.78 kristaps 1924: }
1.277 schwarze 1925: return rr ? ROFF_CONT : ROFF_IGN;
1.74 kristaps 1926: }
1927:
1.266 schwarze 1928: /* --- handling of numeric and conditional expressions -------------------- */
1929:
1.204 schwarze 1930: /*
1931: * Parse a single signed integer number. Stop at the first non-digit.
1932: * If there is at least one digit, return success and advance the
1933: * parse point, else return failure and let the parse point unchanged.
1934: * Ignore overflows, treat them just like the C language.
1935: */
1.184 schwarze 1936: static int
1.261 schwarze 1937: roff_getnum(const char *v, int *pos, int *res, int flags)
1.184 schwarze 1938: {
1.261 schwarze 1939: int myres, scaled, n, p;
1.206 schwarze 1940:
1941: if (NULL == res)
1942: res = &myres;
1.184 schwarze 1943:
1944: p = *pos;
1945: n = v[p] == '-';
1.261 schwarze 1946: if (n || v[p] == '+')
1.184 schwarze 1947: p++;
1948:
1.261 schwarze 1949: if (flags & ROFFNUM_WHITE)
1950: while (isspace((unsigned char)v[p]))
1951: p++;
1952:
1.184 schwarze 1953: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.204 schwarze 1954: *res = 10 * *res + v[p] - '0';
1.184 schwarze 1955: if (p == *pos + n)
1956: return 0;
1957:
1958: if (n)
1959: *res = -*res;
1960:
1.254 schwarze 1961: /* Each number may be followed by one optional scaling unit. */
1962:
1963: switch (v[p]) {
1964: case 'f':
1.261 schwarze 1965: scaled = *res * 65536;
1.254 schwarze 1966: break;
1967: case 'i':
1.261 schwarze 1968: scaled = *res * 240;
1.254 schwarze 1969: break;
1970: case 'c':
1.261 schwarze 1971: scaled = *res * 240 / 2.54;
1.254 schwarze 1972: break;
1973: case 'v':
1974: case 'P':
1.261 schwarze 1975: scaled = *res * 40;
1.254 schwarze 1976: break;
1977: case 'm':
1978: case 'n':
1.261 schwarze 1979: scaled = *res * 24;
1.254 schwarze 1980: break;
1981: case 'p':
1.261 schwarze 1982: scaled = *res * 10 / 3;
1.254 schwarze 1983: break;
1984: case 'u':
1.261 schwarze 1985: scaled = *res;
1.254 schwarze 1986: break;
1987: case 'M':
1.261 schwarze 1988: scaled = *res * 6 / 25;
1.254 schwarze 1989: break;
1990: default:
1.261 schwarze 1991: scaled = *res;
1.254 schwarze 1992: p--;
1993: break;
1994: }
1.261 schwarze 1995: if (flags & ROFFNUM_SCALE)
1996: *res = scaled;
1.254 schwarze 1997:
1998: *pos = p + 1;
1.277 schwarze 1999: return 1;
1.184 schwarze 2000: }
2001:
1.198 schwarze 2002: /*
2003: * Evaluate a string comparison condition.
2004: * The first character is the delimiter.
2005: * Succeed if the string up to its second occurrence
2006: * matches the string up to its third occurence.
2007: * Advance the cursor after the third occurrence
2008: * or lacking that, to the end of the line.
2009: */
2010: static int
2011: roff_evalstrcond(const char *v, int *pos)
2012: {
2013: const char *s1, *s2, *s3;
2014: int match;
2015:
2016: match = 0;
2017: s1 = v + *pos; /* initial delimiter */
2018: s2 = s1 + 1; /* for scanning the first string */
2019: s3 = strchr(s2, *s1); /* for scanning the second string */
2020:
2021: if (NULL == s3) /* found no middle delimiter */
2022: goto out;
2023:
2024: while ('\0' != *++s3) {
2025: if (*s2 != *s3) { /* mismatch */
2026: s3 = strchr(s3, *s1);
2027: break;
2028: }
2029: if (*s3 == *s1) { /* found the final delimiter */
2030: match = 1;
2031: break;
2032: }
2033: s2++;
2034: }
2035:
2036: out:
2037: if (NULL == s3)
2038: s3 = strchr(s2, '\0');
1.242 schwarze 2039: else if (*s3 != '\0')
1.198 schwarze 2040: s3++;
2041: *pos = s3 - v;
1.277 schwarze 2042: return match;
1.198 schwarze 2043: }
2044:
1.204 schwarze 2045: /*
2046: * Evaluate an optionally negated single character, numerical,
2047: * or string condition.
2048: */
1.198 schwarze 2049: static int
1.271 schwarze 2050: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.88 kristaps 2051: {
1.271 schwarze 2052: char *cp, *name;
2053: size_t sz;
1.241 schwarze 2054: int number, savepos, wanttrue;
1.88 kristaps 2055:
1.198 schwarze 2056: if ('!' == v[*pos]) {
2057: wanttrue = 0;
2058: (*pos)++;
2059: } else
2060: wanttrue = 1;
2061:
1.88 kristaps 2062: switch (v[*pos]) {
1.240 schwarze 2063: case '\0':
1.277 schwarze 2064: return 0;
1.207 schwarze 2065: case 'n':
2066: case 'o':
1.88 kristaps 2067: (*pos)++;
1.277 schwarze 2068: return wanttrue;
1.207 schwarze 2069: case 'c':
2070: case 'd':
2071: case 'e':
2072: case 't':
1.239 schwarze 2073: case 'v':
1.88 kristaps 2074: (*pos)++;
1.277 schwarze 2075: return !wanttrue;
1.271 schwarze 2076: case 'r':
2077: cp = name = v + ++*pos;
2078: sz = roff_getname(r, &cp, ln, *pos);
2079: *pos = cp - v;
1.277 schwarze 2080: return (sz && roff_hasregn(r, name, sz)) == wanttrue;
1.88 kristaps 2081: default:
2082: break;
2083: }
2084:
1.241 schwarze 2085: savepos = *pos;
1.261 schwarze 2086: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.277 schwarze 2087: return (number > 0) == wanttrue;
1.241 schwarze 2088: else if (*pos == savepos)
1.277 schwarze 2089: return roff_evalstrcond(v, pos) == wanttrue;
1.204 schwarze 2090: else
1.277 schwarze 2091: return 0;
1.88 kristaps 2092: }
2093:
1.74 kristaps 2094: static enum rofferr
1.103 kristaps 2095: roff_line_ignore(ROFF_ARGS)
1.89 kristaps 2096: {
1.123 schwarze 2097:
1.277 schwarze 2098: return ROFF_IGN;
1.89 kristaps 2099: }
2100:
1.104 kristaps 2101: static enum rofferr
1.251 schwarze 2102: roff_insec(ROFF_ARGS)
2103: {
2104:
2105: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
1.295 schwarze 2106: ln, ppos, roff_name[tok]);
1.277 schwarze 2107: return ROFF_IGN;
1.251 schwarze 2108: }
2109:
2110: static enum rofferr
2111: roff_unsupp(ROFF_ARGS)
2112: {
2113:
2114: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
1.295 schwarze 2115: ln, ppos, roff_name[tok]);
1.277 schwarze 2116: return ROFF_IGN;
1.251 schwarze 2117: }
2118:
2119: static enum rofferr
1.82 kristaps 2120: roff_cond(ROFF_ARGS)
1.74 kristaps 2121: {
1.173 schwarze 2122:
2123: roffnode_push(r, tok, NULL, ln, ppos);
1.74 kristaps 2124:
1.207 schwarze 2125: /*
1.134 kristaps 2126: * An `.el' has no conditional body: it will consume the value
2127: * of the current rstack entry set in prior `ie' calls or
1.207 schwarze 2128: * defaults to DENY.
1.134 kristaps 2129: *
2130: * If we're not an `el', however, then evaluate the conditional.
2131: */
1.133 kristaps 2132:
1.238 schwarze 2133: r->last->rule = tok == ROFF_el ?
1.207 schwarze 2134: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.238 schwarze 2135: roff_evalcond(r, ln, buf->buf, &pos);
1.77 kristaps 2136:
1.134 kristaps 2137: /*
2138: * An if-else will put the NEGATION of the current evaluated
2139: * conditional into the stack of rules.
2140: */
2141:
1.238 schwarze 2142: if (tok == ROFF_ie) {
1.223 schwarze 2143: if (r->rstackpos + 1 == r->rstacksz) {
2144: r->rstacksz += 16;
2145: r->rstack = mandoc_reallocarray(r->rstack,
2146: r->rstacksz, sizeof(int));
1.134 kristaps 2147: }
1.198 schwarze 2148: r->rstack[++r->rstackpos] = !r->last->rule;
1.82 kristaps 2149: }
1.88 kristaps 2150:
2151: /* If the parent has false as its rule, then so do we. */
2152:
1.198 schwarze 2153: if (r->last->parent && !r->last->parent->rule)
2154: r->last->rule = 0;
1.88 kristaps 2155:
2156: /*
1.173 schwarze 2157: * Determine scope.
2158: * If there is nothing on the line after the conditional,
2159: * not even whitespace, use next-line scope.
1.88 kristaps 2160: */
1.74 kristaps 2161:
1.238 schwarze 2162: if (buf->buf[pos] == '\0') {
1.173 schwarze 2163: r->last->endspan = 2;
2164: goto out;
2165: }
2166:
1.238 schwarze 2167: while (buf->buf[pos] == ' ')
1.173 schwarze 2168: pos++;
2169:
2170: /* An opening brace requests multiline scope. */
1.75 kristaps 2171:
1.238 schwarze 2172: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.75 kristaps 2173: r->last->endspan = -1;
2174: pos += 2;
1.272 schwarze 2175: while (buf->buf[pos] == ' ')
2176: pos++;
1.173 schwarze 2177: goto out;
1.207 schwarze 2178: }
1.74 kristaps 2179:
1.77 kristaps 2180: /*
1.173 schwarze 2181: * Anything else following the conditional causes
2182: * single-line scope. Warn if the scope contains
2183: * nothing but trailing whitespace.
1.77 kristaps 2184: */
2185:
1.238 schwarze 2186: if (buf->buf[pos] == '\0')
1.216 schwarze 2187: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
1.295 schwarze 2188: ln, ppos, roff_name[tok]);
1.77 kristaps 2189:
1.173 schwarze 2190: r->last->endspan = 1;
1.74 kristaps 2191:
1.173 schwarze 2192: out:
1.75 kristaps 2193: *offs = pos;
1.277 schwarze 2194: return ROFF_RERUN;
1.83 schwarze 2195: }
2196:
2197: static enum rofferr
1.92 schwarze 2198: roff_ds(ROFF_ARGS)
2199: {
1.212 schwarze 2200: char *string;
2201: const char *name;
2202: size_t namesz;
1.96 kristaps 2203:
1.251 schwarze 2204: /* Ignore groff compatibility mode for now. */
2205:
2206: if (tok == ROFF_ds1)
2207: tok = ROFF_ds;
2208: else if (tok == ROFF_as1)
2209: tok = ROFF_as;
2210:
1.96 kristaps 2211: /*
1.212 schwarze 2212: * The first word is the name of the string.
2213: * If it is empty or terminated by an escape sequence,
2214: * abort the `ds' request without defining anything.
1.96 kristaps 2215: */
1.92 schwarze 2216:
1.238 schwarze 2217: name = string = buf->buf + pos;
2218: if (*name == '\0')
1.277 schwarze 2219: return ROFF_IGN;
1.92 schwarze 2220:
1.212 schwarze 2221: namesz = roff_getname(r, &string, ln, pos);
1.238 schwarze 2222: if (name[namesz] == '\\')
1.277 schwarze 2223: return ROFF_IGN;
1.212 schwarze 2224:
2225: /* Read past the initial double-quote, if any. */
1.238 schwarze 2226: if (*string == '"')
1.92 schwarze 2227: string++;
2228:
1.96 kristaps 2229: /* The rest is the value. */
1.212 schwarze 2230: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2231: ROFF_as == tok);
1.277 schwarze 2232: return ROFF_IGN;
1.92 schwarze 2233: }
2234:
1.204 schwarze 2235: /*
2236: * Parse a single operator, one or two characters long.
2237: * If the operator is recognized, return success and advance the
2238: * parse point, else return failure and let the parse point unchanged.
2239: */
2240: static int
2241: roff_getop(const char *v, int *pos, char *res)
2242: {
2243:
2244: *res = v[*pos];
2245:
2246: switch (*res) {
1.207 schwarze 2247: case '+':
2248: case '-':
2249: case '*':
2250: case '/':
2251: case '%':
2252: case '&':
2253: case ':':
1.204 schwarze 2254: break;
2255: case '<':
2256: switch (v[*pos + 1]) {
1.207 schwarze 2257: case '=':
1.204 schwarze 2258: *res = 'l';
2259: (*pos)++;
2260: break;
1.207 schwarze 2261: case '>':
1.204 schwarze 2262: *res = '!';
2263: (*pos)++;
2264: break;
1.207 schwarze 2265: case '?':
1.204 schwarze 2266: *res = 'i';
2267: (*pos)++;
2268: break;
2269: default:
2270: break;
2271: }
2272: break;
2273: case '>':
2274: switch (v[*pos + 1]) {
1.207 schwarze 2275: case '=':
1.204 schwarze 2276: *res = 'g';
2277: (*pos)++;
2278: break;
1.207 schwarze 2279: case '?':
1.204 schwarze 2280: *res = 'a';
2281: (*pos)++;
2282: break;
2283: default:
2284: break;
2285: }
2286: break;
2287: case '=':
2288: if ('=' == v[*pos + 1])
2289: (*pos)++;
2290: break;
2291: default:
1.277 schwarze 2292: return 0;
1.204 schwarze 2293: }
2294: (*pos)++;
2295:
1.277 schwarze 2296: return *res;
1.204 schwarze 2297: }
2298:
2299: /*
2300: * Evaluate either a parenthesized numeric expression
2301: * or a single signed integer number.
2302: */
2303: static int
1.235 schwarze 2304: roff_evalpar(struct roff *r, int ln,
1.261 schwarze 2305: const char *v, int *pos, int *res, int flags)
1.204 schwarze 2306: {
2307:
2308: if ('(' != v[*pos])
1.277 schwarze 2309: return roff_getnum(v, pos, res, flags);
1.204 schwarze 2310:
2311: (*pos)++;
1.261 schwarze 2312: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.277 schwarze 2313: return 0;
1.204 schwarze 2314:
1.206 schwarze 2315: /*
2316: * Omission of the closing parenthesis
2317: * is an error in validation mode,
2318: * but ignored in evaluation mode.
2319: */
2320:
1.204 schwarze 2321: if (')' == v[*pos])
2322: (*pos)++;
1.206 schwarze 2323: else if (NULL == res)
1.277 schwarze 2324: return 0;
1.204 schwarze 2325:
1.277 schwarze 2326: return 1;
1.204 schwarze 2327: }
2328:
2329: /*
2330: * Evaluate a complete numeric expression.
2331: * Proceed left to right, there is no concept of precedence.
2332: */
2333: static int
1.235 schwarze 2334: roff_evalnum(struct roff *r, int ln, const char *v,
1.261 schwarze 2335: int *pos, int *res, int flags)
1.204 schwarze 2336: {
2337: int mypos, operand2;
2338: char operator;
2339:
2340: if (NULL == pos) {
2341: mypos = 0;
2342: pos = &mypos;
2343: }
2344:
1.261 schwarze 2345: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2346: while (isspace((unsigned char)v[*pos]))
2347: (*pos)++;
2348:
1.261 schwarze 2349: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.277 schwarze 2350: return 0;
1.204 schwarze 2351:
2352: while (1) {
1.261 schwarze 2353: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2354: while (isspace((unsigned char)v[*pos]))
2355: (*pos)++;
2356:
2357: if ( ! roff_getop(v, pos, &operator))
2358: break;
2359:
1.261 schwarze 2360: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2361: while (isspace((unsigned char)v[*pos]))
2362: (*pos)++;
2363:
1.261 schwarze 2364: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.277 schwarze 2365: return 0;
1.204 schwarze 2366:
1.261 schwarze 2367: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2368: while (isspace((unsigned char)v[*pos]))
2369: (*pos)++;
1.206 schwarze 2370:
2371: if (NULL == res)
2372: continue;
1.204 schwarze 2373:
2374: switch (operator) {
1.207 schwarze 2375: case '+':
1.204 schwarze 2376: *res += operand2;
2377: break;
1.207 schwarze 2378: case '-':
1.204 schwarze 2379: *res -= operand2;
2380: break;
1.207 schwarze 2381: case '*':
1.204 schwarze 2382: *res *= operand2;
2383: break;
1.207 schwarze 2384: case '/':
1.244 schwarze 2385: if (operand2 == 0) {
1.235 schwarze 2386: mandoc_msg(MANDOCERR_DIVZERO,
1.234 kristaps 2387: r->parse, ln, *pos, v);
2388: *res = 0;
2389: break;
2390: }
1.204 schwarze 2391: *res /= operand2;
2392: break;
1.207 schwarze 2393: case '%':
1.244 schwarze 2394: if (operand2 == 0) {
2395: mandoc_msg(MANDOCERR_DIVZERO,
2396: r->parse, ln, *pos, v);
2397: *res = 0;
2398: break;
2399: }
1.204 schwarze 2400: *res %= operand2;
2401: break;
1.207 schwarze 2402: case '<':
1.204 schwarze 2403: *res = *res < operand2;
2404: break;
1.207 schwarze 2405: case '>':
1.204 schwarze 2406: *res = *res > operand2;
2407: break;
1.207 schwarze 2408: case 'l':
1.204 schwarze 2409: *res = *res <= operand2;
2410: break;
1.207 schwarze 2411: case 'g':
1.204 schwarze 2412: *res = *res >= operand2;
2413: break;
1.207 schwarze 2414: case '=':
1.204 schwarze 2415: *res = *res == operand2;
2416: break;
1.207 schwarze 2417: case '!':
1.204 schwarze 2418: *res = *res != operand2;
2419: break;
1.207 schwarze 2420: case '&':
1.204 schwarze 2421: *res = *res && operand2;
2422: break;
1.207 schwarze 2423: case ':':
1.204 schwarze 2424: *res = *res || operand2;
2425: break;
1.207 schwarze 2426: case 'i':
1.204 schwarze 2427: if (operand2 < *res)
2428: *res = operand2;
2429: break;
1.207 schwarze 2430: case 'a':
1.204 schwarze 2431: if (operand2 > *res)
2432: *res = operand2;
2433: break;
2434: default:
2435: abort();
2436: }
2437: }
1.277 schwarze 2438: return 1;
1.204 schwarze 2439: }
2440:
1.266 schwarze 2441: /* --- register management ------------------------------------------------ */
2442:
1.180 schwarze 2443: void
1.187 schwarze 2444: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.147 kristaps 2445: {
1.180 schwarze 2446: struct roffreg *reg;
2447:
2448: /* Search for an existing register with the same name. */
2449: reg = r->regtab;
2450:
2451: while (reg && strcmp(name, reg->key.p))
2452: reg = reg->next;
1.147 kristaps 2453:
1.180 schwarze 2454: if (NULL == reg) {
2455: /* Create a new register. */
2456: reg = mandoc_malloc(sizeof(struct roffreg));
2457: reg->key.p = mandoc_strdup(name);
2458: reg->key.sz = strlen(name);
1.187 schwarze 2459: reg->val = 0;
1.180 schwarze 2460: reg->next = r->regtab;
2461: r->regtab = reg;
2462: }
2463:
1.187 schwarze 2464: if ('+' == sign)
2465: reg->val += val;
2466: else if ('-' == sign)
2467: reg->val -= val;
2468: else
2469: reg->val = val;
1.147 kristaps 2470: }
2471:
1.192 schwarze 2472: /*
2473: * Handle some predefined read-only number registers.
2474: * For now, return -1 if the requested register is not predefined;
2475: * in case a predefined read-only register having the value -1
2476: * were to turn up, another special value would have to be chosen.
2477: */
2478: static int
1.273 schwarze 2479: roff_getregro(const struct roff *r, const char *name)
1.192 schwarze 2480: {
2481:
2482: switch (*name) {
1.273 schwarze 2483: case '$': /* Number of arguments of the last macro evaluated. */
1.277 schwarze 2484: return r->argc;
1.207 schwarze 2485: case 'A': /* ASCII approximation mode is always off. */
1.277 schwarze 2486: return 0;
1.207 schwarze 2487: case 'g': /* Groff compatibility mode is always on. */
1.277 schwarze 2488: return 1;
1.207 schwarze 2489: case 'H': /* Fixed horizontal resolution. */
1.277 schwarze 2490: return 24;
1.207 schwarze 2491: case 'j': /* Always adjust left margin only. */
1.277 schwarze 2492: return 0;
1.207 schwarze 2493: case 'T': /* Some output device is always defined. */
1.277 schwarze 2494: return 1;
1.207 schwarze 2495: case 'V': /* Fixed vertical resolution. */
1.277 schwarze 2496: return 40;
1.192 schwarze 2497: default:
1.277 schwarze 2498: return -1;
1.192 schwarze 2499: }
2500: }
2501:
1.181 schwarze 2502: int
1.180 schwarze 2503: roff_getreg(const struct roff *r, const char *name)
1.147 kristaps 2504: {
1.180 schwarze 2505: struct roffreg *reg;
1.192 schwarze 2506: int val;
2507:
2508: if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) {
1.273 schwarze 2509: val = roff_getregro(r, name + 1);
1.192 schwarze 2510: if (-1 != val)
1.277 schwarze 2511: return val;
1.192 schwarze 2512: }
1.180 schwarze 2513:
2514: for (reg = r->regtab; reg; reg = reg->next)
2515: if (0 == strcmp(name, reg->key.p))
1.277 schwarze 2516: return reg->val;
1.181 schwarze 2517:
1.277 schwarze 2518: return 0;
1.181 schwarze 2519: }
2520:
2521: static int
2522: roff_getregn(const struct roff *r, const char *name, size_t len)
2523: {
2524: struct roffreg *reg;
1.192 schwarze 2525: int val;
2526:
2527: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2528: val = roff_getregro(r, name + 1);
1.192 schwarze 2529: if (-1 != val)
1.277 schwarze 2530: return val;
1.192 schwarze 2531: }
1.181 schwarze 2532:
2533: for (reg = r->regtab; reg; reg = reg->next)
2534: if (len == reg->key.sz &&
2535: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2536: return reg->val;
1.271 schwarze 2537:
1.277 schwarze 2538: return 0;
1.271 schwarze 2539: }
2540:
2541: static int
2542: roff_hasregn(const struct roff *r, const char *name, size_t len)
2543: {
2544: struct roffreg *reg;
2545: int val;
2546:
2547: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2548: val = roff_getregro(r, name + 1);
1.271 schwarze 2549: if (-1 != val)
1.277 schwarze 2550: return 1;
1.271 schwarze 2551: }
2552:
2553: for (reg = r->regtab; reg; reg = reg->next)
2554: if (len == reg->key.sz &&
2555: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2556: return 1;
1.147 kristaps 2557:
1.277 schwarze 2558: return 0;
1.147 kristaps 2559: }
2560:
1.180 schwarze 2561: static void
2562: roff_freereg(struct roffreg *reg)
1.147 kristaps 2563: {
1.180 schwarze 2564: struct roffreg *old_reg;
1.147 kristaps 2565:
1.180 schwarze 2566: while (NULL != reg) {
2567: free(reg->key.p);
2568: old_reg = reg;
2569: reg = reg->next;
2570: free(old_reg);
2571: }
1.147 kristaps 2572: }
1.92 schwarze 2573:
2574: static enum rofferr
1.89 kristaps 2575: roff_nr(ROFF_ARGS)
1.83 schwarze 2576: {
1.212 schwarze 2577: char *key, *val;
2578: size_t keysz;
1.138 kristaps 2579: int iv;
1.187 schwarze 2580: char sign;
1.89 kristaps 2581:
1.238 schwarze 2582: key = val = buf->buf + pos;
2583: if (*key == '\0')
1.277 schwarze 2584: return ROFF_IGN;
1.212 schwarze 2585:
2586: keysz = roff_getname(r, &val, ln, pos);
1.238 schwarze 2587: if (key[keysz] == '\\')
1.277 schwarze 2588: return ROFF_IGN;
1.212 schwarze 2589: key[keysz] = '\0';
1.89 kristaps 2590:
1.187 schwarze 2591: sign = *val;
1.238 schwarze 2592: if (sign == '+' || sign == '-')
1.187 schwarze 2593: val++;
2594:
1.261 schwarze 2595: if (roff_evalnum(r, ln, val, NULL, &iv, ROFFNUM_SCALE))
1.204 schwarze 2596: roff_setreg(r, key, iv, sign);
1.109 kristaps 2597:
1.277 schwarze 2598: return ROFF_IGN;
1.203 schwarze 2599: }
2600:
2601: static enum rofferr
2602: roff_rr(ROFF_ARGS)
2603: {
2604: struct roffreg *reg, **prev;
1.212 schwarze 2605: char *name, *cp;
2606: size_t namesz;
1.203 schwarze 2607:
1.238 schwarze 2608: name = cp = buf->buf + pos;
2609: if (*name == '\0')
1.277 schwarze 2610: return ROFF_IGN;
1.212 schwarze 2611: namesz = roff_getname(r, &cp, ln, pos);
2612: name[namesz] = '\0';
1.203 schwarze 2613:
2614: prev = &r->regtab;
2615: while (1) {
2616: reg = *prev;
1.238 schwarze 2617: if (reg == NULL || !strcmp(name, reg->key.p))
1.203 schwarze 2618: break;
2619: prev = ®->next;
2620: }
1.238 schwarze 2621: if (reg != NULL) {
1.203 schwarze 2622: *prev = reg->next;
2623: free(reg->key.p);
2624: free(reg);
2625: }
1.277 schwarze 2626: return ROFF_IGN;
1.122 schwarze 2627: }
2628:
1.266 schwarze 2629: /* --- handler functions for roff requests -------------------------------- */
2630:
1.122 schwarze 2631: static enum rofferr
2632: roff_rm(ROFF_ARGS)
2633: {
2634: const char *name;
2635: char *cp;
1.212 schwarze 2636: size_t namesz;
1.122 schwarze 2637:
1.238 schwarze 2638: cp = buf->buf + pos;
2639: while (*cp != '\0') {
1.212 schwarze 2640: name = cp;
1.238 schwarze 2641: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.212 schwarze 2642: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.238 schwarze 2643: if (name[namesz] == '\\')
1.212 schwarze 2644: break;
1.122 schwarze 2645: }
1.277 schwarze 2646: return ROFF_IGN;
1.178 schwarze 2647: }
2648:
2649: static enum rofferr
2650: roff_it(ROFF_ARGS)
2651: {
2652: int iv;
2653:
2654: /* Parse the number of lines. */
1.261 schwarze 2655:
2656: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.222 schwarze 2657: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.238 schwarze 2658: ln, ppos, buf->buf + 1);
1.277 schwarze 2659: return ROFF_IGN;
1.178 schwarze 2660: }
2661:
1.262 schwarze 2662: while (isspace((unsigned char)buf->buf[pos]))
2663: pos++;
2664:
2665: /*
2666: * Arm the input line trap.
2667: * Special-casing "an-trap" is an ugly workaround to cope
2668: * with DocBook stupidly fiddling with man(7) internals.
2669: */
1.261 schwarze 2670:
1.178 schwarze 2671: roffit_lines = iv;
1.262 schwarze 2672: roffit_macro = mandoc_strdup(iv != 1 ||
2673: strcmp(buf->buf + pos, "an-trap") ?
2674: buf->buf + pos : "br");
1.277 schwarze 2675: return ROFF_IGN;
1.175 schwarze 2676: }
2677:
2678: static enum rofferr
2679: roff_Dd(ROFF_ARGS)
2680: {
2681: const char *const *cp;
2682:
1.227 schwarze 2683: if ((r->options & (MPARSE_MDOC | MPARSE_QUICK)) == 0)
1.175 schwarze 2684: for (cp = __mdoc_reserved; *cp; cp++)
2685: roff_setstr(r, *cp, NULL, 0);
2686:
1.227 schwarze 2687: if (r->format == 0)
2688: r->format = MPARSE_MDOC;
2689:
1.277 schwarze 2690: return ROFF_CONT;
1.175 schwarze 2691: }
2692:
2693: static enum rofferr
2694: roff_TH(ROFF_ARGS)
2695: {
2696: const char *const *cp;
2697:
1.227 schwarze 2698: if ((r->options & MPARSE_QUICK) == 0)
1.175 schwarze 2699: for (cp = __man_reserved; *cp; cp++)
2700: roff_setstr(r, *cp, NULL, 0);
2701:
1.227 schwarze 2702: if (r->format == 0)
2703: r->format = MPARSE_MAN;
2704:
1.277 schwarze 2705: return ROFF_CONT;
1.109 kristaps 2706: }
2707:
2708: static enum rofferr
2709: roff_TE(ROFF_ARGS)
2710: {
2711:
2712: if (NULL == r->tbl)
1.221 schwarze 2713: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2714: ln, ppos, "TE");
1.258 schwarze 2715: else if ( ! tbl_end(&r->tbl)) {
2716: free(buf->buf);
2717: buf->buf = mandoc_strdup(".sp");
2718: buf->sz = 4;
1.277 schwarze 2719: return ROFF_REPARSE;
1.258 schwarze 2720: }
1.277 schwarze 2721: return ROFF_IGN;
1.112 kristaps 2722: }
2723:
2724: static enum rofferr
2725: roff_T_(ROFF_ARGS)
2726: {
2727:
2728: if (NULL == r->tbl)
1.221 schwarze 2729: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2730: ln, ppos, "T&");
1.112 kristaps 2731: else
1.296 schwarze 2732: tbl_restart(ln, ppos, r->tbl);
1.112 kristaps 2733:
1.277 schwarze 2734: return ROFF_IGN;
1.109 kristaps 2735: }
2736:
1.230 schwarze 2737: /*
2738: * Handle in-line equation delimiters.
2739: */
2740: static enum rofferr
1.238 schwarze 2741: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.151 kristaps 2742: {
1.233 schwarze 2743: char *cp1, *cp2;
2744: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.151 kristaps 2745:
1.230 schwarze 2746: /*
2747: * Outside equations, look for an opening delimiter.
2748: * If we are inside an equation, we already know it is
2749: * in-line, or this function wouldn't have been called;
2750: * so look for a closing delimiter.
2751: */
2752:
1.238 schwarze 2753: cp1 = buf->buf + pos;
1.230 schwarze 2754: cp2 = strchr(cp1, r->eqn == NULL ?
2755: r->last_eqn->odelim : r->last_eqn->cdelim);
2756: if (cp2 == NULL)
1.277 schwarze 2757: return ROFF_CONT;
1.230 schwarze 2758:
1.233 schwarze 2759: *cp2++ = '\0';
2760: bef_pr = bef_nl = aft_nl = aft_pr = "";
2761:
2762: /* Handle preceding text, protecting whitespace. */
2763:
1.238 schwarze 2764: if (*buf->buf != '\0') {
1.233 schwarze 2765: if (r->eqn == NULL)
2766: bef_pr = "\\&";
2767: bef_nl = "\n";
2768: }
2769:
2770: /*
2771: * Prepare replacing the delimiter with an equation macro
2772: * and drop leading white space from the equation.
2773: */
1.230 schwarze 2774:
1.233 schwarze 2775: if (r->eqn == NULL) {
2776: while (*cp2 == ' ')
2777: cp2++;
2778: mac = ".EQ";
2779: } else
2780: mac = ".EN";
2781:
2782: /* Handle following text, protecting whitespace. */
2783:
2784: if (*cp2 != '\0') {
2785: aft_nl = "\n";
2786: if (r->eqn != NULL)
2787: aft_pr = "\\&";
2788: }
2789:
2790: /* Do the actual replacement. */
2791:
1.238 schwarze 2792: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.233 schwarze 2793: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.238 schwarze 2794: free(buf->buf);
2795: buf->buf = cp1;
1.230 schwarze 2796:
2797: /* Toggle the in-line state of the eqn subsystem. */
2798:
2799: r->eqn_inline = r->eqn == NULL;
1.277 schwarze 2800: return ROFF_REPARSE;
1.151 kristaps 2801: }
2802:
1.235 schwarze 2803: static enum rofferr
2804: roff_EQ(ROFF_ARGS)
1.125 kristaps 2805: {
1.151 kristaps 2806: struct eqn_node *e;
1.125 kristaps 2807:
1.238 schwarze 2808: assert(r->eqn == NULL);
1.235 schwarze 2809: e = eqn_alloc(ppos, ln, r->parse);
1.125 kristaps 2810:
1.230 schwarze 2811: if (r->last_eqn) {
1.125 kristaps 2812: r->last_eqn->next = e;
1.230 schwarze 2813: e->delim = r->last_eqn->delim;
2814: e->odelim = r->last_eqn->odelim;
2815: e->cdelim = r->last_eqn->cdelim;
2816: } else
1.125 kristaps 2817: r->first_eqn = r->last_eqn = e;
2818:
2819: r->eqn = r->last_eqn = e;
1.151 kristaps 2820:
1.238 schwarze 2821: if (buf->buf[pos] != '\0')
1.235 schwarze 2822: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 2823: ".EQ %s", buf->buf + pos);
1.151 kristaps 2824:
1.277 schwarze 2825: return ROFF_IGN;
1.125 kristaps 2826: }
2827:
2828: static enum rofferr
2829: roff_EN(ROFF_ARGS)
2830: {
2831:
1.221 schwarze 2832: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
1.277 schwarze 2833: return ROFF_IGN;
1.125 kristaps 2834: }
2835:
2836: static enum rofferr
1.109 kristaps 2837: roff_TS(ROFF_ARGS)
2838: {
1.176 schwarze 2839: struct tbl_node *tbl;
1.89 kristaps 2840:
1.115 kristaps 2841: if (r->tbl) {
1.221 schwarze 2842: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
2843: ln, ppos, "TS breaks TS");
1.151 kristaps 2844: tbl_end(&r->tbl);
1.115 kristaps 2845: }
1.83 schwarze 2846:
1.176 schwarze 2847: tbl = tbl_alloc(ppos, ln, r->parse);
1.113 kristaps 2848:
2849: if (r->last_tbl)
1.176 schwarze 2850: r->last_tbl->next = tbl;
1.113 kristaps 2851: else
1.176 schwarze 2852: r->first_tbl = r->last_tbl = tbl;
1.113 kristaps 2853:
1.176 schwarze 2854: r->tbl = r->last_tbl = tbl;
1.297 schwarze 2855: return ROFF_IGN;
2856: }
2857:
2858: static enum rofferr
2859: roff_onearg(ROFF_ARGS)
2860: {
2861: struct roff_node *n;
2862: char *cp;
1.305 ! schwarze 2863: int npos;
1.297 schwarze 2864:
1.302 schwarze 2865: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
2866: (tok == ROFF_sp || tok == ROFF_ti))
2867: man_breakscope(r->man, tok);
2868:
1.305 ! schwarze 2869: if (tok == ROFF_ce && roffce_node != NULL) {
! 2870: r->man->last = roffce_node;
! 2871: r->man->next = ROFF_NEXT_SIBLING;
! 2872: }
! 2873:
1.297 schwarze 2874: roff_elem_alloc(r->man, ln, ppos, tok);
2875: n = r->man->last;
2876:
2877: cp = buf->buf + pos;
2878: if (*cp != '\0') {
2879: while (*cp != '\0' && *cp != ' ')
2880: cp++;
2881: while (*cp == ' ')
2882: *cp++ = '\0';
2883: if (*cp != '\0')
2884: mandoc_vmsg(MANDOCERR_ARG_EXCESS,
2885: r->parse, ln, cp - buf->buf,
2886: "%s ... %s", roff_name[tok], cp);
2887: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.300 schwarze 2888: }
2889:
1.305 ! schwarze 2890: if (tok == ROFF_ce) {
! 2891: if (r->man->last->tok == ROFF_ce) {
! 2892: roff_word_alloc(r->man, ln, pos, "1");
! 2893: r->man->last->flags |= NODE_NOSRC;
! 2894: }
! 2895: npos = 0;
! 2896: if (roff_evalnum(r, ln, r->man->last->string, &npos,
! 2897: &roffce_lines, 0) == 0) {
! 2898: mandoc_vmsg(MANDOCERR_CE_NONUM,
! 2899: r->parse, ln, pos, "ce %s", buf->buf + pos);
! 2900: roffce_lines = 1;
! 2901: }
! 2902: if (roffce_lines < 1) {
! 2903: r->man->last = r->man->last->parent;
! 2904: roffce_node = NULL;
! 2905: roffce_lines = 0;
! 2906: } else
! 2907: roffce_node = r->man->last->parent;
! 2908: } else {
! 2909: n->flags |= NODE_VALID | NODE_ENDED;
! 2910: r->man->last = n;
! 2911: }
! 2912: n->flags |= NODE_LINE;
1.300 schwarze 2913: r->man->next = ROFF_NEXT_SIBLING;
2914: return ROFF_IGN;
2915: }
2916:
2917: static enum rofferr
2918: roff_manyarg(ROFF_ARGS)
2919: {
2920: struct roff_node *n;
2921: char *sp, *ep;
2922:
2923: roff_elem_alloc(r->man, ln, ppos, tok);
2924: n = r->man->last;
2925:
2926: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
2927: while (*ep != '\0' && *ep != ' ')
2928: ep++;
2929: while (*ep == ' ')
2930: *ep++ = '\0';
2931: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.297 schwarze 2932: }
2933:
2934: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
2935: r->man->last = n;
2936: r->man->next = ROFF_NEXT_SIBLING;
1.277 schwarze 2937: return ROFF_IGN;
1.251 schwarze 2938: }
2939:
2940: static enum rofferr
1.296 schwarze 2941: roff_br(ROFF_ARGS)
1.251 schwarze 2942: {
1.302 schwarze 2943: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
2944: man_breakscope(r->man, ROFF_br);
1.296 schwarze 2945: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
2946: if (buf->buf[pos] != '\0')
2947: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
2948: "%s %s", roff_name[tok], buf->buf + pos);
2949: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
2950: r->man->next = ROFF_NEXT_SIBLING;
2951: return ROFF_IGN;
1.92 schwarze 2952: }
2953:
1.105 kristaps 2954: static enum rofferr
1.174 kristaps 2955: roff_cc(ROFF_ARGS)
2956: {
2957: const char *p;
2958:
1.238 schwarze 2959: p = buf->buf + pos;
1.174 kristaps 2960:
1.238 schwarze 2961: if (*p == '\0' || (r->control = *p++) == '.')
1.303 schwarze 2962: r->control = '\0';
1.174 kristaps 2963:
1.238 schwarze 2964: if (*p != '\0')
1.260 schwarze 2965: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
2966: ln, p - buf->buf, "cc ... %s", p);
1.174 kristaps 2967:
1.277 schwarze 2968: return ROFF_IGN;
1.174 kristaps 2969: }
2970:
2971: static enum rofferr
1.303 schwarze 2972: roff_ec(ROFF_ARGS)
2973: {
2974: const char *p;
2975:
2976: p = buf->buf + pos;
2977: if (*p == '\0')
2978: r->escape = '\\';
2979: else {
2980: r->escape = *p;
2981: if (*++p != '\0')
2982: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
2983: ln, p - buf->buf, "ec ... %s", p);
2984: }
2985: return ROFF_IGN;
2986: }
2987:
2988: static enum rofferr
2989: roff_eo(ROFF_ARGS)
2990: {
2991: r->escape = '\0';
2992: if (buf->buf[pos] != '\0')
2993: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse,
2994: ln, pos, "eo %s", buf->buf + pos);
2995: return ROFF_IGN;
2996: }
2997:
2998: static enum rofferr
1.164 kristaps 2999: roff_tr(ROFF_ARGS)
3000: {
3001: const char *p, *first, *second;
3002: size_t fsz, ssz;
3003: enum mandoc_esc esc;
3004:
1.238 schwarze 3005: p = buf->buf + pos;
1.164 kristaps 3006:
1.238 schwarze 3007: if (*p == '\0') {
1.260 schwarze 3008: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.277 schwarze 3009: return ROFF_IGN;
1.164 kristaps 3010: }
3011:
1.238 schwarze 3012: while (*p != '\0') {
1.164 kristaps 3013: fsz = ssz = 1;
3014:
3015: first = p++;
1.238 schwarze 3016: if (*first == '\\') {
1.164 kristaps 3017: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3018: if (esc == ESCAPE_ERROR) {
1.219 schwarze 3019: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 3020: ln, (int)(p - buf->buf), first);
1.277 schwarze 3021: return ROFF_IGN;
1.164 kristaps 3022: }
3023: fsz = (size_t)(p - first);
3024: }
3025:
3026: second = p++;
1.238 schwarze 3027: if (*second == '\\') {
1.164 kristaps 3028: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3029: if (esc == ESCAPE_ERROR) {
1.219 schwarze 3030: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 3031: ln, (int)(p - buf->buf), second);
1.277 schwarze 3032: return ROFF_IGN;
1.164 kristaps 3033: }
3034: ssz = (size_t)(p - second);
1.238 schwarze 3035: } else if (*second == '\0') {
1.260 schwarze 3036: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
3037: ln, first - buf->buf, "tr %s", first);
1.164 kristaps 3038: second = " ";
1.165 kristaps 3039: p--;
1.164 kristaps 3040: }
3041:
1.167 kristaps 3042: if (fsz > 1) {
1.207 schwarze 3043: roff_setstrn(&r->xmbtab, first, fsz,
3044: second, ssz, 0);
1.167 kristaps 3045: continue;
3046: }
3047:
1.238 schwarze 3048: if (r->xtab == NULL)
1.207 schwarze 3049: r->xtab = mandoc_calloc(128,
3050: sizeof(struct roffstr));
1.167 kristaps 3051:
3052: free(r->xtab[(int)*first].p);
3053: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3054: r->xtab[(int)*first].sz = ssz;
1.164 kristaps 3055: }
3056:
1.277 schwarze 3057: return ROFF_IGN;
1.164 kristaps 3058: }
3059:
3060: static enum rofferr
1.105 kristaps 3061: roff_so(ROFF_ARGS)
3062: {
1.249 schwarze 3063: char *name, *cp;
1.105 kristaps 3064:
1.238 schwarze 3065: name = buf->buf + pos;
1.224 schwarze 3066: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.105 kristaps 3067:
3068: /*
3069: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3070: * opening anything that's not in our cwd or anything beneath
3071: * it. Thus, explicitly disallow traversing up the file-system
3072: * or using absolute paths.
3073: */
3074:
1.238 schwarze 3075: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.210 schwarze 3076: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
3077: ".so %s", name);
1.249 schwarze 3078: buf->sz = mandoc_asprintf(&cp,
3079: ".sp\nSee the file %s.\n.sp", name) + 1;
3080: free(buf->buf);
3081: buf->buf = cp;
3082: *offs = 0;
1.277 schwarze 3083: return ROFF_REPARSE;
1.105 kristaps 3084: }
3085:
3086: *offs = pos;
1.277 schwarze 3087: return ROFF_SO;
1.105 kristaps 3088: }
1.92 schwarze 3089:
1.266 schwarze 3090: /* --- user defined strings and macros ------------------------------------ */
3091:
1.106 kristaps 3092: static enum rofferr
3093: roff_userdef(ROFF_ARGS)
1.99 kristaps 3094: {
1.263 schwarze 3095: const char *arg[9], *ap;
1.106 kristaps 3096: char *cp, *n1, *n2;
1.292 schwarze 3097: int expand_count, i, ib, ie;
1.263 schwarze 3098: size_t asz, rsz;
1.106 kristaps 3099:
3100: /*
3101: * Collect pointers to macro argument strings
1.188 schwarze 3102: * and NUL-terminate them.
1.106 kristaps 3103: */
1.263 schwarze 3104:
1.273 schwarze 3105: r->argc = 0;
1.238 schwarze 3106: cp = buf->buf + pos;
1.273 schwarze 3107: for (i = 0; i < 9; i++) {
3108: if (*cp == '\0')
3109: arg[i] = "";
3110: else {
3111: arg[i] = mandoc_getarg(r->parse, &cp, ln, &pos);
3112: r->argc = i + 1;
3113: }
3114: }
1.99 kristaps 3115:
1.106 kristaps 3116: /*
3117: * Expand macro arguments.
1.99 kristaps 3118: */
1.263 schwarze 3119:
3120: buf->sz = strlen(r->current_string) + 1;
1.292 schwarze 3121: n1 = n2 = cp = mandoc_malloc(buf->sz);
1.263 schwarze 3122: memcpy(n1, r->current_string, buf->sz);
1.292 schwarze 3123: expand_count = 0;
1.263 schwarze 3124: while (*cp != '\0') {
3125:
3126: /* Scan ahead for the next argument invocation. */
3127:
3128: if (*cp++ != '\\')
3129: continue;
3130: if (*cp++ != '$')
3131: continue;
1.274 schwarze 3132: if (*cp == '*') { /* \\$* inserts all arguments */
3133: ib = 0;
3134: ie = r->argc - 1;
3135: } else { /* \\$1 .. \\$9 insert one argument */
3136: ib = ie = *cp - '1';
3137: if (ib < 0 || ib > 8)
3138: continue;
3139: }
1.263 schwarze 3140: cp -= 2;
1.292 schwarze 3141:
3142: /*
3143: * Prevent infinite recursion.
3144: */
3145:
3146: if (cp >= n2)
3147: expand_count = 1;
3148: else if (++expand_count > EXPAND_LIMIT) {
3149: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
3150: ln, (int)(cp - n1), NULL);
1.293 schwarze 3151: free(buf->buf);
3152: buf->buf = n1;
1.292 schwarze 3153: return ROFF_IGN;
3154: }
1.263 schwarze 3155:
3156: /*
3157: * Determine the size of the expanded argument,
3158: * taking escaping of quotes into account.
3159: */
3160:
1.274 schwarze 3161: asz = ie > ib ? ie - ib : 0; /* for blanks */
3162: for (i = ib; i <= ie; i++) {
3163: for (ap = arg[i]; *ap != '\0'; ap++) {
3164: asz++;
3165: if (*ap == '"')
3166: asz += 3;
3167: }
1.263 schwarze 3168: }
3169: if (asz != 3) {
3170:
3171: /*
3172: * Determine the size of the rest of the
3173: * unexpanded macro, including the NUL.
3174: */
3175:
3176: rsz = buf->sz - (cp - n1) - 3;
3177:
3178: /*
3179: * When shrinking, move before
3180: * releasing the storage.
3181: */
3182:
3183: if (asz < 3)
3184: memmove(cp + asz, cp + 3, rsz);
3185:
3186: /*
3187: * Resize the storage for the macro
3188: * and readjust the parse pointer.
3189: */
3190:
3191: buf->sz += asz - 3;
3192: n2 = mandoc_realloc(n1, buf->sz);
3193: cp = n2 + (cp - n1);
3194: n1 = n2;
3195:
3196: /*
3197: * When growing, make room
3198: * for the expanded argument.
3199: */
3200:
3201: if (asz > 3)
3202: memmove(cp + asz, cp + 3, rsz);
3203: }
3204:
3205: /* Copy the expanded argument, escaping quotes. */
3206:
3207: n2 = cp;
1.274 schwarze 3208: for (i = ib; i <= ie; i++) {
3209: for (ap = arg[i]; *ap != '\0'; ap++) {
3210: if (*ap == '"') {
3211: memcpy(n2, "\\(dq", 4);
3212: n2 += 4;
3213: } else
3214: *n2++ = *ap;
3215: }
3216: if (i < ie)
3217: *n2++ = ' ';
1.106 kristaps 3218: }
1.99 kristaps 3219: }
3220:
1.106 kristaps 3221: /*
3222: * Replace the macro invocation
3223: * by the expanded macro.
3224: */
1.263 schwarze 3225:
1.238 schwarze 3226: free(buf->buf);
3227: buf->buf = n1;
1.248 schwarze 3228: *offs = 0;
1.106 kristaps 3229:
1.277 schwarze 3230: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
3231: ROFF_REPARSE : ROFF_APPEND;
1.99 kristaps 3232: }
1.121 schwarze 3233:
1.212 schwarze 3234: static size_t
1.121 schwarze 3235: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3236: {
3237: char *name, *cp;
1.212 schwarze 3238: size_t namesz;
1.121 schwarze 3239:
3240: name = *cpp;
3241: if ('\0' == *name)
1.277 schwarze 3242: return 0;
1.121 schwarze 3243:
1.212 schwarze 3244: /* Read until end of name and terminate it with NUL. */
3245: for (cp = name; 1; cp++) {
3246: if ('\0' == *cp || ' ' == *cp) {
3247: namesz = cp - name;
3248: break;
3249: }
1.121 schwarze 3250: if ('\\' != *cp)
3251: continue;
1.215 schwarze 3252: namesz = cp - name;
3253: if ('{' == cp[1] || '}' == cp[1])
3254: break;
1.121 schwarze 3255: cp++;
3256: if ('\\' == *cp)
3257: continue;
1.224 schwarze 3258: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3259: "%.*s", (int)(cp - name + 1), name);
1.212 schwarze 3260: mandoc_escape((const char **)&cp, NULL, NULL);
3261: break;
1.121 schwarze 3262: }
3263:
3264: /* Read past spaces. */
3265: while (' ' == *cp)
3266: cp++;
3267:
3268: *cpp = cp;
1.277 schwarze 3269: return namesz;
1.121 schwarze 3270: }
3271:
1.106 kristaps 3272: /*
3273: * Store *string into the user-defined string called *name.
3274: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.193 schwarze 3275: * append == 0: replace mode
3276: * append == 1: single-line append mode
3277: * append == 2: multiline append mode, append '\n' after each call
1.106 kristaps 3278: */
1.94 kristaps 3279: static void
1.106 kristaps 3280: roff_setstr(struct roff *r, const char *name, const char *string,
1.193 schwarze 3281: int append)
1.92 schwarze 3282: {
1.164 kristaps 3283:
3284: roff_setstrn(&r->strtab, name, strlen(name), string,
1.207 schwarze 3285: string ? strlen(string) : 0, append);
1.164 kristaps 3286: }
3287:
3288: static void
1.166 kristaps 3289: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.193 schwarze 3290: const char *string, size_t stringsz, int append)
1.164 kristaps 3291: {
1.166 kristaps 3292: struct roffkv *n;
1.164 kristaps 3293: char *c;
3294: int i;
3295: size_t oldch, newch;
1.92 schwarze 3296:
1.106 kristaps 3297: /* Search for an existing string with the same name. */
1.164 kristaps 3298: n = *r;
3299:
1.211 schwarze 3300: while (n && (namesz != n->key.sz ||
3301: strncmp(n->key.p, name, namesz)))
1.92 schwarze 3302: n = n->next;
1.94 kristaps 3303:
3304: if (NULL == n) {
1.106 kristaps 3305: /* Create a new string table entry. */
1.166 kristaps 3306: n = mandoc_malloc(sizeof(struct roffkv));
3307: n->key.p = mandoc_strndup(name, namesz);
3308: n->key.sz = namesz;
3309: n->val.p = NULL;
3310: n->val.sz = 0;
1.164 kristaps 3311: n->next = *r;
3312: *r = n;
1.193 schwarze 3313: } else if (0 == append) {
1.166 kristaps 3314: free(n->val.p);
3315: n->val.p = NULL;
3316: n->val.sz = 0;
1.106 kristaps 3317: }
3318:
3319: if (NULL == string)
3320: return;
3321:
3322: /*
3323: * One additional byte for the '\n' in multiline mode,
3324: * and one for the terminating '\0'.
3325: */
1.193 schwarze 3326: newch = stringsz + (1 < append ? 2u : 1u);
1.164 kristaps 3327:
1.166 kristaps 3328: if (NULL == n->val.p) {
3329: n->val.p = mandoc_malloc(newch);
3330: *n->val.p = '\0';
1.106 kristaps 3331: oldch = 0;
3332: } else {
1.166 kristaps 3333: oldch = n->val.sz;
3334: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.106 kristaps 3335: }
3336:
3337: /* Skip existing content in the destination buffer. */
1.166 kristaps 3338: c = n->val.p + (int)oldch;
1.106 kristaps 3339:
3340: /* Append new content to the destination buffer. */
1.164 kristaps 3341: i = 0;
3342: while (i < (int)stringsz) {
1.106 kristaps 3343: /*
3344: * Rudimentary roff copy mode:
3345: * Handle escaped backslashes.
3346: */
1.164 kristaps 3347: if ('\\' == string[i] && '\\' == string[i + 1])
3348: i++;
3349: *c++ = string[i++];
1.106 kristaps 3350: }
1.94 kristaps 3351:
1.106 kristaps 3352: /* Append terminating bytes. */
1.193 schwarze 3353: if (1 < append)
1.106 kristaps 3354: *c++ = '\n';
1.163 kristaps 3355:
1.106 kristaps 3356: *c = '\0';
1.166 kristaps 3357: n->val.sz = (int)(c - n->val.p);
1.92 schwarze 3358: }
3359:
1.94 kristaps 3360: static const char *
3361: roff_getstrn(const struct roff *r, const char *name, size_t len)
1.92 schwarze 3362: {
1.166 kristaps 3363: const struct roffkv *n;
1.191 schwarze 3364: int i;
1.92 schwarze 3365:
1.164 kristaps 3366: for (n = r->strtab; n; n = n->next)
1.207 schwarze 3367: if (0 == strncmp(name, n->key.p, len) &&
3368: '\0' == n->key.p[(int)len])
1.277 schwarze 3369: return n->val.p;
1.191 schwarze 3370:
3371: for (i = 0; i < PREDEFS_MAX; i++)
3372: if (0 == strncmp(name, predefs[i].name, len) &&
3373: '\0' == predefs[i].name[(int)len])
1.277 schwarze 3374: return predefs[i].str;
1.94 kristaps 3375:
1.277 schwarze 3376: return NULL;
1.92 schwarze 3377: }
3378:
1.94 kristaps 3379: static void
1.167 kristaps 3380: roff_freestr(struct roffkv *r)
1.92 schwarze 3381: {
1.166 kristaps 3382: struct roffkv *n, *nn;
1.92 schwarze 3383:
1.167 kristaps 3384: for (n = r; n; n = nn) {
1.166 kristaps 3385: free(n->key.p);
3386: free(n->val.p);
1.92 schwarze 3387: nn = n->next;
3388: free(n);
3389: }
1.114 kristaps 3390: }
1.266 schwarze 3391:
3392: /* --- accessors and utility functions ------------------------------------ */
1.114 kristaps 3393:
3394: const struct tbl_span *
3395: roff_span(const struct roff *r)
3396: {
1.207 schwarze 3397:
1.277 schwarze 3398: return r->tbl ? tbl_span(r->tbl) : NULL;
1.125 kristaps 3399: }
3400:
3401: const struct eqn *
3402: roff_eqn(const struct roff *r)
3403: {
1.207 schwarze 3404:
1.277 schwarze 3405: return r->last_eqn ? &r->last_eqn->eqn : NULL;
1.164 kristaps 3406: }
3407:
3408: /*
3409: * Duplicate an input string, making the appropriate character
3410: * conversations (as stipulated by `tr') along the way.
3411: * Returns a heap-allocated string with all the replacements made.
3412: */
3413: char *
3414: roff_strdup(const struct roff *r, const char *p)
3415: {
1.166 kristaps 3416: const struct roffkv *cp;
1.164 kristaps 3417: char *res;
3418: const char *pp;
3419: size_t ssz, sz;
3420: enum mandoc_esc esc;
3421:
1.167 kristaps 3422: if (NULL == r->xmbtab && NULL == r->xtab)
1.277 schwarze 3423: return mandoc_strdup(p);
1.164 kristaps 3424: else if ('\0' == *p)
1.277 schwarze 3425: return mandoc_strdup("");
1.164 kristaps 3426:
3427: /*
3428: * Step through each character looking for term matches
3429: * (remember that a `tr' can be invoked with an escape, which is
3430: * a glyph but the escape is multi-character).
3431: * We only do this if the character hash has been initialised
3432: * and the string is >0 length.
3433: */
3434:
3435: res = NULL;
3436: ssz = 0;
3437:
3438: while ('\0' != *p) {
1.289 schwarze 3439: assert((unsigned int)*p < 128);
3440: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.167 kristaps 3441: sz = r->xtab[(int)*p].sz;
3442: res = mandoc_realloc(res, ssz + sz + 1);
3443: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3444: ssz += sz;
3445: p++;
3446: continue;
3447: } else if ('\\' != *p) {
3448: res = mandoc_realloc(res, ssz + 2);
3449: res[ssz++] = *p++;
3450: continue;
3451: }
3452:
1.164 kristaps 3453: /* Search for term matches. */
1.167 kristaps 3454: for (cp = r->xmbtab; cp; cp = cp->next)
1.166 kristaps 3455: if (0 == strncmp(p, cp->key.p, cp->key.sz))
1.164 kristaps 3456: break;
3457:
3458: if (NULL != cp) {
3459: /*
3460: * A match has been found.
3461: * Append the match to the array and move
3462: * forward by its keysize.
3463: */
1.207 schwarze 3464: res = mandoc_realloc(res,
3465: ssz + cp->val.sz + 1);
1.166 kristaps 3466: memcpy(res + ssz, cp->val.p, cp->val.sz);
3467: ssz += cp->val.sz;
3468: p += (int)cp->key.sz;
1.164 kristaps 3469: continue;
3470: }
3471:
1.167 kristaps 3472: /*
3473: * Handle escapes carefully: we need to copy
3474: * over just the escape itself, or else we might
3475: * do replacements within the escape itself.
3476: * Make sure to pass along the bogus string.
3477: */
3478: pp = p++;
3479: esc = mandoc_escape(&p, NULL, NULL);
3480: if (ESCAPE_ERROR == esc) {
3481: sz = strlen(pp);
1.164 kristaps 3482: res = mandoc_realloc(res, ssz + sz + 1);
3483: memcpy(res + ssz, pp, sz);
1.167 kristaps 3484: break;
1.164 kristaps 3485: }
1.207 schwarze 3486: /*
3487: * We bail out on bad escapes.
1.167 kristaps 3488: * No need to warn: we already did so when
3489: * roff_res() was called.
3490: */
3491: sz = (int)(p - pp);
3492: res = mandoc_realloc(res, ssz + sz + 1);
3493: memcpy(res + ssz, pp, sz);
3494: ssz += sz;
1.164 kristaps 3495: }
3496:
3497: res[(int)ssz] = '\0';
1.277 schwarze 3498: return res;
1.227 schwarze 3499: }
3500:
3501: int
3502: roff_getformat(const struct roff *r)
3503: {
3504:
1.277 schwarze 3505: return r->format;
1.174 kristaps 3506: }
3507:
3508: /*
1.207 schwarze 3509: * Find out whether a line is a macro line or not.
1.174 kristaps 3510: * If it is, adjust the current position and return one; if it isn't,
3511: * return zero and don't change the current position.
3512: * If the control character has been set with `.cc', then let that grain
3513: * precedence.
3514: * This is slighly contrary to groff, where using the non-breaking
3515: * control character when `cc' has been invoked will cause the
3516: * non-breaking macro contents to be printed verbatim.
3517: */
3518: int
3519: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
3520: {
3521: int pos;
3522:
3523: pos = *ppos;
3524:
1.303 schwarze 3525: if (r->control != '\0' && cp[pos] == r->control)
1.174 kristaps 3526: pos++;
1.303 schwarze 3527: else if (r->control != '\0')
1.277 schwarze 3528: return 0;
1.174 kristaps 3529: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
3530: pos += 2;
3531: else if ('.' == cp[pos] || '\'' == cp[pos])
3532: pos++;
3533: else
1.277 schwarze 3534: return 0;
1.174 kristaps 3535:
3536: while (' ' == cp[pos] || '\t' == cp[pos])
3537: pos++;
3538:
3539: *ppos = pos;
1.277 schwarze 3540: return 1;
1.74 kristaps 3541: }
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