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1.29 ! jfb 1: /* $OpenBSD: rcs.c,v 1.28 2005/03/03 21:02:23 jfb Exp $ */
1.1 jfb 2: /*
3: * Copyright (c) 2004 Jean-Francois Brousseau <jfb@openbsd.org>
1.15 tedu 4: * All rights reserved.
1.1 jfb 5: *
1.15 tedu 6: * Redistribution and use in source and binary forms, with or without
7: * modification, are permitted provided that the following conditions
8: * are met:
1.1 jfb 9: *
1.15 tedu 10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
1.1 jfb 12: * 2. The name of the author may not be used to endorse or promote products
1.15 tedu 13: * derived from this software without specific prior written permission.
1.1 jfb 14: *
15: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
16: * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
17: * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
18: * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
19: * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20: * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
21: * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
22: * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
23: * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
1.15 tedu 24: * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
1.1 jfb 25: */
26:
27: #include <sys/param.h>
28: #include <sys/queue.h>
29: #include <sys/stat.h>
30:
31: #include <errno.h>
32: #include <stdio.h>
33: #include <ctype.h>
34: #include <stdlib.h>
1.26 jfb 35: #include <stdarg.h>
1.1 jfb 36: #include <string.h>
37:
38: #include "rcs.h"
39: #include "log.h"
40:
1.26 jfb 41: #define RCS_BUFSIZE 16384
1.18 jfb 42: #define RCS_BUFEXTSIZE 8192
1.1 jfb 43:
44:
45: /* RCS token types */
46: #define RCS_TOK_ERR -1
47: #define RCS_TOK_EOF 0
48: #define RCS_TOK_NUM 1
49: #define RCS_TOK_ID 2
50: #define RCS_TOK_STRING 3
51: #define RCS_TOK_SCOLON 4
52: #define RCS_TOK_COLON 5
53:
54:
55: #define RCS_TOK_HEAD 8
56: #define RCS_TOK_BRANCH 9
57: #define RCS_TOK_ACCESS 10
58: #define RCS_TOK_SYMBOLS 11
59: #define RCS_TOK_LOCKS 12
60: #define RCS_TOK_COMMENT 13
61: #define RCS_TOK_EXPAND 14
62: #define RCS_TOK_DATE 15
63: #define RCS_TOK_AUTHOR 16
64: #define RCS_TOK_STATE 17
65: #define RCS_TOK_NEXT 18
66: #define RCS_TOK_BRANCHES 19
67: #define RCS_TOK_DESC 20
68: #define RCS_TOK_LOG 21
69: #define RCS_TOK_TEXT 22
70: #define RCS_TOK_STRICT 23
71:
72: #define RCS_ISKEY(t) (((t) >= RCS_TOK_HEAD) && ((t) <= RCS_TOK_BRANCHES))
73:
74:
75: #define RCS_NOSCOL 0x01 /* no terminating semi-colon */
76: #define RCS_VOPT 0x02 /* value is optional */
77:
78:
79: /* opaque parse data */
80: struct rcs_pdata {
1.18 jfb 81: u_int rp_lines;
1.1 jfb 82:
83: char *rp_buf;
84: size_t rp_blen;
1.18 jfb 85: char *rp_bufend;
1.1 jfb 86:
87: /* pushback token buffer */
88: char rp_ptok[128];
89: int rp_pttype; /* token type, RCS_TOK_ERR if no token */
90:
91: FILE *rp_file;
92: };
93:
94:
95: struct rcs_line {
96: char *rl_line;
97: int rl_lineno;
98: TAILQ_ENTRY(rcs_line) rl_list;
99: };
1.5 vincent 100: TAILQ_HEAD(rcs_tqh, rcs_line);
1.1 jfb 101:
102: struct rcs_foo {
103: int rl_nblines;
104: char *rl_data;
1.5 vincent 105: struct rcs_tqh rl_lines;
1.1 jfb 106: };
107:
108: #define RCS_TOKSTR(rfp) ((struct rcs_pdata *)rfp->rf_pdata)->rp_buf
109: #define RCS_TOKLEN(rfp) ((struct rcs_pdata *)rfp->rf_pdata)->rp_blen
110:
111:
1.20 jfb 112: static struct rcs_kfl {
113: char rk_char;
114: int rk_val;
115: } rcs_kflags[] = {
116: { 'k', RCS_KWEXP_NAME },
117: { 'v', RCS_KWEXP_VAL },
118: { 'l', RCS_KWEXP_LKR },
119: { 'o', RCS_KWEXP_OLD },
120: { 'b', RCS_KWEXP_NONE },
121: };
122:
1.1 jfb 123: static struct rcs_key {
124: char rk_str[16];
125: int rk_id;
126: int rk_val;
127: int rk_flags;
128: } rcs_keys[] = {
129: { "access", RCS_TOK_ACCESS, RCS_TOK_ID, RCS_VOPT },
130: { "author", RCS_TOK_AUTHOR, RCS_TOK_STRING, 0 },
131: { "branch", RCS_TOK_BRANCH, RCS_TOK_NUM, RCS_VOPT },
132: { "branches", RCS_TOK_BRANCHES, RCS_TOK_NUM, RCS_VOPT },
133: { "comment", RCS_TOK_COMMENT, RCS_TOK_STRING, RCS_VOPT },
134: { "date", RCS_TOK_DATE, RCS_TOK_NUM, 0 },
135: { "desc", RCS_TOK_DESC, RCS_TOK_STRING, RCS_NOSCOL },
136: { "expand", RCS_TOK_EXPAND, RCS_TOK_STRING, RCS_VOPT },
137: { "head", RCS_TOK_HEAD, RCS_TOK_NUM, RCS_VOPT },
138: { "locks", RCS_TOK_LOCKS, RCS_TOK_ID, 0 },
139: { "log", RCS_TOK_LOG, RCS_TOK_STRING, RCS_NOSCOL },
140: { "next", RCS_TOK_NEXT, RCS_TOK_NUM, RCS_VOPT },
141: { "state", RCS_TOK_STATE, RCS_TOK_STRING, RCS_VOPT },
142: { "strict", RCS_TOK_STRICT, 0, 0, },
143: { "symbols", RCS_TOK_SYMBOLS, 0, 0 },
144: { "text", RCS_TOK_TEXT, RCS_TOK_STRING, RCS_NOSCOL },
145: };
146:
1.18 jfb 147: #define RCS_NKEYS (sizeof(rcs_keys)/sizeof(rcs_keys[0]))
1.1 jfb 148:
149:
1.27 jfb 150: static int rcs_write (RCSFILE *);
1.26 jfb 151: static int rcs_parse (RCSFILE *);
152: static int rcs_parse_admin (RCSFILE *);
153: static int rcs_parse_delta (RCSFILE *);
154: static int rcs_parse_deltatext (RCSFILE *);
155:
156: static int rcs_parse_access (RCSFILE *);
157: static int rcs_parse_symbols (RCSFILE *);
158: static int rcs_parse_locks (RCSFILE *);
159: static int rcs_parse_branches (RCSFILE *, struct rcs_delta *);
160: static void rcs_freedelta (struct rcs_delta *);
161: static void rcs_freepdata (struct rcs_pdata *);
162: static int rcs_gettok (RCSFILE *);
163: static int rcs_pushtok (RCSFILE *, const char *, int);
164: static int rcs_growbuf (RCSFILE *);
165: static int rcs_patch_lines (struct rcs_foo *, struct rcs_foo *);
166:
167: static struct rcs_delta* rcs_findrev (RCSFILE *, RCSNUM *);
168: static struct rcs_foo* rcs_splitlines (const char *);
169: static void rcs_freefoo (struct rcs_foo *);
170:
171:
1.1 jfb 172: /*
173: * rcs_open()
174: *
175: * Open a file containing RCS-formatted information. The file's path is
1.26 jfb 176: * given in <path>, and the opening flags are given in <flags>, which is either
177: * RCS_READ, RCS_WRITE, or RCS_RDWR. If the open requests write access and
178: * the file does not exist, the RCS_CREATE flag must also be given, in which
179: * case it will be created with the mode specified in a third argument of
180: * type mode_t. If the file exists and RCS_CREATE is passed, the open will
181: * fail.
1.1 jfb 182: * Returns a handle to the opened file on success, or NULL on failure.
183: */
184: RCSFILE*
1.26 jfb 185: rcs_open(const char *path, int flags, ...)
1.1 jfb 186: {
1.26 jfb 187: int ret;
188: mode_t fmode;
1.1 jfb 189: RCSFILE *rfp;
190: struct stat st;
1.26 jfb 191: va_list vap;
192:
193: fmode = 0;
194: flags &= 0xffff; /* ditch any internal flags */
1.1 jfb 195:
1.26 jfb 196: if (((ret = stat(path, &st)) == -1) && (errno == ENOENT)) {
197: if (flags & RCS_CREATE) {
198: va_start(vap, flags);
199: fmode = va_arg(vap, mode_t);
200: va_end(vap);
201: } else {
202: cvs_log(LP_ERR, "RCS file `%s' does not exist", path);
203: return (NULL);
204: }
205: } else if ((ret == 0) && (flags & RCS_CREATE)) {
206: cvs_log(LP_ERR, "RCS file `%s' exists", path);
1.1 jfb 207: return (NULL);
208: }
209:
1.26 jfb 210: if ((rfp = (RCSFILE *)malloc(sizeof(*rfp))) == NULL) {
1.1 jfb 211: cvs_log(LP_ERRNO, "failed to allocate RCS file structure");
212: return (NULL);
213: }
214: memset(rfp, 0, sizeof(*rfp));
215:
1.26 jfb 216: if ((rfp->rf_branch = rcsnum_alloc()) == NULL) {
217: free(rfp);
1.11 joris 218: return (NULL);
219: }
220:
1.26 jfb 221: if ((rfp->rf_path = strdup(path)) == NULL) {
1.1 jfb 222: cvs_log(LP_ERRNO, "failed to duplicate RCS file path");
1.26 jfb 223: rcsnum_free(rfp->rf_branch);
224: free(rfp);
1.1 jfb 225: return (NULL);
226: }
227:
228: rfp->rf_ref = 1;
1.26 jfb 229: rfp->rf_flags = flags | RCS_SLOCK;
230: rfp->rf_mode = fmode;
1.1 jfb 231:
232: TAILQ_INIT(&(rfp->rf_delta));
1.29 ! jfb 233: TAILQ_INIT(&(rfp->rf_access));
1.1 jfb 234: TAILQ_INIT(&(rfp->rf_symbols));
235: TAILQ_INIT(&(rfp->rf_locks));
236:
1.26 jfb 237: if (rfp->rf_flags & RCS_CREATE) {
238: } else if (rcs_parse(rfp) < 0) {
1.1 jfb 239: rcs_close(rfp);
240: return (NULL);
241: }
242:
243: return (rfp);
244: }
245:
246:
247: /*
248: * rcs_close()
249: *
250: * Close an RCS file handle.
251: */
252: void
253: rcs_close(RCSFILE *rfp)
254: {
255: struct rcs_delta *rdp;
1.13 jfb 256: struct rcs_lock *rlp;
257: struct rcs_sym *rsp;
1.1 jfb 258:
259: if (rfp->rf_ref > 1) {
260: rfp->rf_ref--;
261: return;
262: }
263:
1.26 jfb 264: if ((rfp->rf_flags & RCS_WRITE) && !(rfp->rf_flags & RCS_SYNCED))
265: rcs_write(rfp);
266:
1.1 jfb 267: while (!TAILQ_EMPTY(&(rfp->rf_delta))) {
268: rdp = TAILQ_FIRST(&(rfp->rf_delta));
269: TAILQ_REMOVE(&(rfp->rf_delta), rdp, rd_list);
270: rcs_freedelta(rdp);
271: }
272:
1.13 jfb 273: while (!TAILQ_EMPTY(&(rfp->rf_symbols))) {
274: rsp = TAILQ_FIRST(&(rfp->rf_symbols));
275: TAILQ_REMOVE(&(rfp->rf_symbols), rsp, rs_list);
276: rcsnum_free(rsp->rs_num);
277: free(rsp->rs_name);
278: free(rsp);
279: }
280:
281: while (!TAILQ_EMPTY(&(rfp->rf_locks))) {
282: rlp = TAILQ_FIRST(&(rfp->rf_locks));
283: TAILQ_REMOVE(&(rfp->rf_locks), rlp, rl_list);
284: rcsnum_free(rlp->rl_num);
285: free(rlp);
286: }
287:
1.1 jfb 288: if (rfp->rf_head != NULL)
289: rcsnum_free(rfp->rf_head);
1.11 joris 290: if (rfp->rf_branch != NULL)
291: rcsnum_free(rfp->rf_branch);
1.1 jfb 292:
293: if (rfp->rf_path != NULL)
294: free(rfp->rf_path);
295: if (rfp->rf_comment != NULL)
296: free(rfp->rf_comment);
297: if (rfp->rf_expand != NULL)
298: free(rfp->rf_expand);
299: if (rfp->rf_desc != NULL)
300: free(rfp->rf_desc);
301: free(rfp);
302: }
303:
304:
305: /*
306: * rcs_write()
307: *
308: * Write the contents of the RCS file handle <rfp> to disk in the file whose
309: * path is in <rf_path>.
310: * Returns 0 on success, or -1 on failure.
311: */
1.27 jfb 312: static int
1.1 jfb 313: rcs_write(RCSFILE *rfp)
314: {
315: FILE *fp;
1.7 jfb 316: char buf[1024], numbuf[64], *cp;
317: size_t rlen, len;
1.29 ! jfb 318: struct rcs_access *ap;
1.1 jfb 319: struct rcs_sym *symp;
320: struct rcs_delta *rdp;
321:
1.28 jfb 322: if (rfp->rf_flags & RCS_SYNCED)
1.1 jfb 323: return (0);
324:
1.29 ! jfb 325: if ((fp = fopen(rfp->rf_path, "w")) == NULL) {
1.1 jfb 326: cvs_log(LP_ERRNO, "failed to open RCS output file `%s'",
327: rfp->rf_path);
328: return (-1);
329: }
330:
1.28 jfb 331: if (rfp->rf_head != NULL)
332: rcsnum_tostr(rfp->rf_head, numbuf, sizeof(numbuf));
333: else
334: numbuf[0] = '\0';
335:
1.1 jfb 336: fprintf(fp, "head\t%s;\n", numbuf);
1.29 ! jfb 337: fputs("access", fp);
! 338: TAILQ_FOREACH(ap, &(rfp->rf_access), ra_list) {
! 339: fprintf(fp, "\n\t%s", ap->ra_name);
! 340: }
! 341: fputs(";\n", fp);
1.1 jfb 342:
343: fprintf(fp, "symbols\n");
344: TAILQ_FOREACH(symp, &(rfp->rf_symbols), rs_list) {
345: rcsnum_tostr(symp->rs_num, numbuf, sizeof(numbuf));
346: snprintf(buf, sizeof(buf), "%s:%s", symp->rs_name, numbuf);
347: fprintf(fp, "\t%s", buf);
348: if (symp != TAILQ_LAST(&(rfp->rf_symbols), rcs_slist))
349: fputc('\n', fp);
350: }
351: fprintf(fp, ";\n");
352:
353: fprintf(fp, "locks;");
354:
1.26 jfb 355: if (rfp->rf_flags & RCS_SLOCK)
1.1 jfb 356: fprintf(fp, " strict;");
357: fputc('\n', fp);
358:
359: if (rfp->rf_comment != NULL)
360: fprintf(fp, "comment\t@%s@;\n", rfp->rf_comment);
361:
362: if (rfp->rf_expand != NULL)
363: fprintf(fp, "expand @ %s @;\n", rfp->rf_expand);
364:
365: fprintf(fp, "\n\n");
366:
367: TAILQ_FOREACH(rdp, &(rfp->rf_delta), rd_list) {
368: fprintf(fp, "%s\n", rcsnum_tostr(rdp->rd_num, numbuf,
369: sizeof(numbuf)));
370: fprintf(fp, "date\t%d.%02d.%02d.%02d.%02d.%02d;",
371: rdp->rd_date.tm_year, rdp->rd_date.tm_mon + 1,
372: rdp->rd_date.tm_mday, rdp->rd_date.tm_hour,
373: rdp->rd_date.tm_min, rdp->rd_date.tm_sec);
374: fprintf(fp, "\tauthor %s;\tstate %s;\n",
375: rdp->rd_author, rdp->rd_state);
376: fprintf(fp, "branches;\n");
377: fprintf(fp, "next\t%s;\n\n", rcsnum_tostr(rdp->rd_next,
378: numbuf, sizeof(numbuf)));
379: }
380:
1.26 jfb 381: fprintf(fp, "\ndesc\n@%s@\n\n",
382: (rfp->rf_desc == NULL) ? "" : rfp->rf_desc);
1.1 jfb 383:
384: /* deltatexts */
385: TAILQ_FOREACH(rdp, &(rfp->rf_delta), rd_list) {
386: fprintf(fp, "\n%s\n", rcsnum_tostr(rdp->rd_num, numbuf,
387: sizeof(numbuf)));
1.7 jfb 388: fprintf(fp, "log\n@%s@\ntext\n@", rdp->rd_log);
389:
390: cp = rdp->rd_text;
391: do {
392: len = sizeof(buf);
393: rlen = rcs_stresc(1, cp, buf, &len);
394: fprintf(fp, "%s", buf);
395: cp += rlen;
396: } while (len != 0);
397: fprintf(fp, "@\n\n");
1.1 jfb 398: }
399: fclose(fp);
400:
1.26 jfb 401: rfp->rf_flags |= RCS_SYNCED;
1.1 jfb 402:
403: return (0);
404: }
405:
406:
407: /*
1.29 ! jfb 408: * rcs_access_add()
! 409: *
! 410: * Add the login name <login> to the access list for the RCS file <file>.
! 411: * Returns 0 on success, or -1 on failure.
! 412: */
! 413: int
! 414: rcs_access_add(RCSFILE *file, const char *login)
! 415: {
! 416: struct rcs_access *ap;
! 417:
! 418: /* first look for duplication */
! 419: TAILQ_FOREACH(ap, &(file->rf_access), ra_list) {
! 420: if (strcmp(ap->ra_name, login) == 0) {
! 421: cvs_log(LP_ERR, "attempt to add duplicate access `%s'",
! 422: login);
! 423: return (-1);
! 424: }
! 425: }
! 426:
! 427: ap = (struct rcs_access *)malloc(sizeof(*ap));
! 428: if (ap == NULL) {
! 429: cvs_log(LP_ERRNO, "failed to allocate RCS access entry");
! 430: return (-1);
! 431: }
! 432:
! 433: ap->ra_name = strdup(login);
! 434: if (ap->ra_name == NULL) {
! 435: cvs_log(LP_ERRNO, "failed to duplicate user name");
! 436: free(ap);
! 437: return (-1);
! 438: }
! 439:
! 440: TAILQ_INSERT_TAIL(&(file->rf_access), ap, ra_list);
! 441:
! 442: /* not synced anymore */
! 443: file->rf_flags &= ~RCS_SYNCED;
! 444: return (0);
! 445:
! 446:
! 447: }
! 448:
! 449:
! 450: /*
! 451: * rcs_access_remove()
! 452: *
! 453: * Remove an entry with login name <login> from the access list of the RCS
! 454: * file <file>.
! 455: * Returns 0 on success, or -1 on failure.
! 456: */
! 457: int
! 458: rcs_access_remove(RCSFILE *file, const char *login)
! 459: {
! 460: struct rcs_access *ap;
! 461:
! 462: TAILQ_FOREACH(ap, &(file->rf_access), ra_list)
! 463: if (strcmp(ap->ra_name, login) == 0)
! 464: break;
! 465:
! 466: if (ap == NULL) {
! 467: cvs_log(LP_ERR, "%s: no access for `%s'", file->rf_path, login);
! 468: return (-1);
! 469: }
! 470:
! 471: TAILQ_REMOVE(&(file->rf_access), ap, ra_list);
! 472: free(ap->ra_name);
! 473: free(ap);
! 474:
! 475: /* not synced anymore */
! 476: file->rf_flags &= ~RCS_SYNCED;
! 477: return (0);
! 478: }
! 479:
! 480:
! 481: /*
1.26 jfb 482: * rcs_sym_add()
1.1 jfb 483: *
484: * Add a symbol to the list of symbols for the RCS file <rfp>. The new symbol
485: * is named <sym> and is bound to the RCS revision <snum>.
486: * Returns 0 on success, or -1 on failure.
487: */
488: int
1.26 jfb 489: rcs_sym_add(RCSFILE *rfp, const char *sym, RCSNUM *snum)
1.1 jfb 490: {
491: struct rcs_sym *symp;
492:
493: /* first look for duplication */
494: TAILQ_FOREACH(symp, &(rfp->rf_symbols), rs_list) {
495: if (strcmp(symp->rs_name, sym) == 0) {
1.17 jfb 496: cvs_log(LP_ERR, "attempt to add duplicate symbol `%s'",
497: sym);
1.1 jfb 498: return (-1);
499: }
500: }
501:
502: symp = (struct rcs_sym *)malloc(sizeof(*symp));
503: if (symp == NULL) {
504: cvs_log(LP_ERRNO, "failed to allocate RCS symbol");
505: return (-1);
506: }
507:
508: symp->rs_name = strdup(sym);
1.10 joris 509: if (symp->rs_name == NULL) {
510: cvs_log(LP_ERRNO, "failed to duplicate symbol");
511: free(symp);
512: return (-1);
513: }
514:
1.1 jfb 515: symp->rs_num = rcsnum_alloc();
1.11 joris 516: if (symp->rs_num == NULL) {
1.17 jfb 517: free(symp->rs_name);
1.11 joris 518: free(symp);
519: return (-1);
520: }
1.1 jfb 521: rcsnum_cpy(snum, symp->rs_num, 0);
522:
523: TAILQ_INSERT_HEAD(&(rfp->rf_symbols), symp, rs_list);
524:
525: /* not synced anymore */
1.26 jfb 526: rfp->rf_flags &= ~RCS_SYNCED;
1.1 jfb 527:
528: return (0);
529: }
530:
531:
532: /*
1.27 jfb 533: * rcs_sym_remove()
534: *
535: * Remove the symbol with name <sym> from the symbol list for the RCS file
536: * <file>. If no such symbol is found, the call fails and returns with an
537: * error.
538: * Returns 0 on success, or -1 on failure.
539: */
540: int
541: rcs_sym_remove(RCSFILE *file, const char *sym)
542: {
543: struct rcs_sym *symp;
544:
545: TAILQ_FOREACH(symp, &(file->rf_symbols), rs_list)
546: if (strcmp(symp->rs_name, sym) == 0)
547: break;
548:
549: if (symp == NULL) {
550: cvs_log(LP_ERR, "%s: no such symbol `%s'", file->rf_path, sym);
551: return (-1);
552: }
553:
554: TAILQ_REMOVE(&(file->rf_symbols), symp, rs_list);
555: free(symp->rs_name);
556: rcsnum_free(symp->rs_num);
557: free(symp);
558:
559: /* not synced anymore */
560: file->rf_flags &= ~RCS_SYNCED;
561:
562: return (0);
563: }
564:
565:
566: /*
567: * rcs_sym_getrev()
568: *
569: * Retrieve the RCS revision number associated with the symbol <sym> for the
570: * RCS file <file>. The returned value is a dynamically-allocated copy and
571: * should be freed by the caller once they are done with it.
572: * Returns the RCSNUM on success, or NULL on failure.
573: */
574: RCSNUM*
575: rcs_sym_getrev(RCSFILE *file, const char *sym)
576: {
577: RCSNUM *num;
578: struct rcs_sym *symp;
579:
580: num = NULL;
581:
582: TAILQ_FOREACH(symp, &(file->rf_symbols), rs_list)
583: if (strcmp(symp->rs_name, sym) == 0)
584: break;
585:
586: if (symp == NULL) {
587: /* XXX set error */
588: } else if (((num = rcsnum_alloc()) != NULL) &&
589: (rcsnum_cpy(symp->rs_num, num, 0) < 0)) {
590: rcsnum_free(num);
591: num = NULL;
592: }
593:
594: return (num);
595: }
596:
597:
598: /*
599: * rcs_desc_get()
600: *
601: * Retrieve the description for the RCS file <file>.
602: */
603: const char*
604: rcs_desc_get(RCSFILE *file)
605: {
606: return (file->rf_desc);
607: }
608:
609:
610: /*
611: * rcs_desc_set()
612: *
613: * Set the description for the RCS file <file>.
614: * Returns 0 on success, or -1 on failure.
615: */
616: int
617: rcs_desc_set(RCSFILE *file, const char *desc)
618: {
619: char *tmp;
620:
621: if ((tmp = strdup(desc)) == NULL)
622: return (-1);
623:
624: if (file->rf_desc != NULL)
625: free(file->rf_desc);
626: file->rf_desc = tmp;
627: file->rf_flags &= ~RCS_SYNCED;
628:
629: return (0);
630: }
631:
632:
633: /*
1.1 jfb 634: * rcs_patch()
635: *
636: * Apply an RCS-format patch pointed to by <patch> to the file contents
637: * found in <data>.
638: * Returns 0 on success, or -1 on failure.
639: */
640: BUF*
641: rcs_patch(const char *data, const char *patch)
642: {
1.5 vincent 643: struct rcs_foo *dlines, *plines;
644: struct rcs_line *lp;
1.1 jfb 645: size_t len;
1.5 vincent 646: int lineno;
1.1 jfb 647: BUF *res;
648:
649: len = strlen(data);
650: res = cvs_buf_alloc(len, BUF_AUTOEXT);
651: if (res == NULL)
652: return (NULL);
653:
654: dlines = rcs_splitlines(data);
1.17 jfb 655: if (dlines == NULL) {
656: cvs_buf_free(res);
1.1 jfb 657: return (NULL);
1.17 jfb 658: }
1.5 vincent 659:
1.1 jfb 660: plines = rcs_splitlines(patch);
1.5 vincent 661: if (plines == NULL) {
1.17 jfb 662: cvs_buf_free(res);
1.5 vincent 663: rcs_freefoo(dlines);
1.1 jfb 664: return (NULL);
1.5 vincent 665: }
666:
667: if (rcs_patch_lines(dlines, plines) < 0) {
1.17 jfb 668: cvs_buf_free(res);
1.5 vincent 669: rcs_freefoo(plines);
670: rcs_freefoo(dlines);
671: return (NULL);
672: }
673:
674: lineno = 0;
675: TAILQ_FOREACH(lp, &dlines->rl_lines, rl_list) {
676: if (lineno != 0)
677: cvs_buf_fappend(res, "%s\n", lp->rl_line);
678: lineno++;
679: }
680:
681: rcs_freefoo(dlines);
682: rcs_freefoo(plines);
683: return (res);
684: }
685:
1.7 jfb 686: static int
1.5 vincent 687: rcs_patch_lines(struct rcs_foo *dlines, struct rcs_foo *plines)
688: {
689: char op, *ep;
690: struct rcs_line *lp, *dlp, *ndlp;
691: int i, lineno, nbln;
1.1 jfb 692:
693: dlp = TAILQ_FIRST(&(dlines->rl_lines));
694: lp = TAILQ_FIRST(&(plines->rl_lines));
695:
696: /* skip first bogus line */
697: for (lp = TAILQ_NEXT(lp, rl_list); lp != NULL;
698: lp = TAILQ_NEXT(lp, rl_list)) {
699: op = *(lp->rl_line);
700: lineno = (int)strtol((lp->rl_line + 1), &ep, 10);
701: if ((lineno > dlines->rl_nblines) || (lineno <= 0) ||
702: (*ep != ' ')) {
703: cvs_log(LP_ERR,
704: "invalid line specification in RCS patch");
705: return (NULL);
706: }
707: ep++;
708: nbln = (int)strtol(ep, &ep, 10);
709: if ((nbln <= 0) || (*ep != '\0')) {
710: cvs_log(LP_ERR,
711: "invalid line number specification in RCS patch");
712: return (NULL);
713: }
714:
715: /* find the appropriate line */
716: for (;;) {
717: if (dlp == NULL)
718: break;
719: if (dlp->rl_lineno == lineno)
720: break;
721: if (dlp->rl_lineno > lineno) {
722: dlp = TAILQ_PREV(dlp, rcs_tqh, rl_list);
1.14 deraadt 723: } else if (dlp->rl_lineno < lineno) {
1.1 jfb 724: ndlp = TAILQ_NEXT(dlp, rl_list);
725: if (ndlp->rl_lineno > lineno)
726: break;
727: dlp = ndlp;
728: }
729: }
730: if (dlp == NULL) {
731: cvs_log(LP_ERR,
732: "can't find referenced line in RCS patch");
733: return (NULL);
734: }
735:
736: if (op == 'd') {
737: for (i = 0; (i < nbln) && (dlp != NULL); i++) {
738: ndlp = TAILQ_NEXT(dlp, rl_list);
739: TAILQ_REMOVE(&(dlines->rl_lines), dlp, rl_list);
740: dlp = ndlp;
741: }
1.14 deraadt 742: } else if (op == 'a') {
1.1 jfb 743: for (i = 0; i < nbln; i++) {
744: ndlp = lp;
745: lp = TAILQ_NEXT(lp, rl_list);
746: if (lp == NULL) {
747: cvs_log(LP_ERR, "truncated RCS patch");
1.5 vincent 748: return (-1);
1.1 jfb 749: }
750: TAILQ_REMOVE(&(plines->rl_lines), lp, rl_list);
751: TAILQ_INSERT_AFTER(&(dlines->rl_lines), dlp,
752: lp, rl_list);
753: dlp = lp;
754:
755: /* we don't want lookup to block on those */
756: lp->rl_lineno = lineno;
757:
758: lp = ndlp;
759: }
1.14 deraadt 760: } else {
1.1 jfb 761: cvs_log(LP_ERR, "unknown RCS patch operation `%c'", op);
1.5 vincent 762: return (-1);
1.1 jfb 763: }
764:
765: /* last line of the patch, done */
766: if (lp->rl_lineno == plines->rl_nblines)
767: break;
768: }
769:
770: /* once we're done patching, rebuild the line numbers */
1.2 vincent 771: lineno = 0;
1.5 vincent 772: TAILQ_FOREACH(lp, &(dlines->rl_lines), rl_list)
1.1 jfb 773: lp->rl_lineno = lineno++;
774: dlines->rl_nblines = lineno - 1;
775:
1.5 vincent 776: return (0);
1.1 jfb 777: }
778:
779:
780: /*
781: * rcs_getrev()
782: *
783: * Get the whole contents of revision <rev> from the RCSFILE <rfp>. The
1.4 vincent 784: * returned buffer is dynamically allocated and should be released using
785: * cvs_buf_free() once the caller is done using it.
1.1 jfb 786: */
787: BUF*
788: rcs_getrev(RCSFILE *rfp, RCSNUM *rev)
789: {
790: int res;
791: size_t len;
792: void *bp;
793: RCSNUM *crev;
794: BUF *rbuf;
795: struct rcs_delta *rdp = NULL;
796:
1.28 jfb 797: if (rfp->rf_head == NULL)
798: return (NULL);
799:
1.1 jfb 800: res = rcsnum_cmp(rfp->rf_head, rev, 0);
801: if (res == 1) {
802: cvs_log(LP_ERR, "sorry, can't travel in the future yet");
803: return (NULL);
1.26 jfb 804: }
805:
806: rdp = rcs_findrev(rfp, rfp->rf_head);
807: if (rdp == NULL) {
808: cvs_log(LP_ERR, "failed to get RCS HEAD revision");
809: return (NULL);
810: }
811:
812: len = strlen(rdp->rd_text);
813: if ((rbuf = cvs_buf_alloc(len, BUF_AUTOEXT)) == NULL)
814: return (NULL);
815:
816: cvs_buf_append(rbuf, rdp->rd_text, len);
817:
818: if (res != 0) {
819: /* Apply patches backwards to get the right version.
820: * This will need some rework to support sub branches.
821: */
822: if ((crev = rcsnum_alloc()) == NULL) {
823: cvs_buf_free(rbuf);
1.1 jfb 824: return (NULL);
825: }
1.26 jfb 826: rcsnum_cpy(rfp->rf_head, crev, 0);
827: do {
828: crev->rn_id[crev->rn_len - 1]--;
829: rdp = rcs_findrev(rfp, crev);
830: if (rdp == NULL) {
831: rcsnum_free(crev);
832: cvs_buf_free(rbuf);
833: return (NULL);
834: }
1.1 jfb 835:
1.26 jfb 836: if (cvs_buf_putc(rbuf, '\0') < 0) {
837: rcsnum_free(crev);
1.17 jfb 838: cvs_buf_free(rbuf);
1.11 joris 839: return (NULL);
1.17 jfb 840: }
1.26 jfb 841: bp = cvs_buf_release(rbuf);
842: rbuf = rcs_patch((char *)bp, rdp->rd_text);
843: if (rbuf == NULL)
844: break;
845: } while (rcsnum_cmp(crev, rev, 0) != 0);
1.1 jfb 846:
1.26 jfb 847: rcsnum_free(crev);
1.1 jfb 848: }
849:
850: return (rbuf);
1.16 jfb 851: }
852:
853:
854: /*
855: * rcs_gethead()
856: *
857: * Get the head revision for the RCS file <rf>.
858: */
859: BUF*
860: rcs_gethead(RCSFILE *rf)
861: {
862: return rcs_getrev(rf, rf->rf_head);
1.1 jfb 863: }
864:
865:
866: /*
867: * rcs_getrevbydate()
868: *
869: * Get an RCS revision by a specific date.
870: */
871: RCSNUM*
872: rcs_getrevbydate(RCSFILE *rfp, struct tm *date)
873: {
874: return (NULL);
875: }
876:
877:
878: /*
879: * rcs_findrev()
880: *
881: * Find a specific revision's delta entry in the tree of the RCS file <rfp>.
882: * The revision number is given in <rev>.
883: * Returns a pointer to the delta on success, or NULL on failure.
884: */
885: static struct rcs_delta*
886: rcs_findrev(RCSFILE *rfp, RCSNUM *rev)
887: {
888: u_int cmplen;
889: struct rcs_delta *rdp;
890: struct rcs_dlist *hp;
1.6 vincent 891: int found;
1.26 jfb 892:
1.1 jfb 893: cmplen = 2;
894: hp = &(rfp->rf_delta);
895:
1.6 vincent 896: do {
897: found = 0;
898: TAILQ_FOREACH(rdp, hp, rd_list) {
899: if (rcsnum_cmp(rdp->rd_num, rev, cmplen) == 0) {
900: if (cmplen == rev->rn_len)
901: return (rdp);
1.1 jfb 902:
1.6 vincent 903: hp = &(rdp->rd_snodes);
904: cmplen += 2;
905: found = 1;
906: break;
907: }
1.1 jfb 908: }
1.6 vincent 909: } while (found && cmplen < rev->rn_len);
1.1 jfb 910:
911: return (NULL);
1.20 jfb 912: }
913:
914:
915: /*
1.26 jfb 916: * rcs_kwexp_set()
917: *
918: * Set the keyword expansion mode to use on the RCS file <file> to <mode>.
919: * Returns 0 on success, or -1 on failure.
920: */
921: int
922: rcs_kwexp_set(RCSFILE *file, int mode)
923: {
924: int i;
925: char *tmp, buf[8] = "";
926:
927: if (RCS_KWEXP_INVAL(mode))
928: return (-1);
929:
930: i = 0;
931: if (mode == RCS_KWEXP_NONE)
932: buf[0] = 'b';
933: else if (mode == RCS_KWEXP_OLD)
934: buf[0] = 'o';
935: else {
936: if (mode & RCS_KWEXP_NAME)
937: buf[i++] = 'k';
938: if (mode & RCS_KWEXP_VAL)
939: buf[i++] = 'v';
940: if (mode & RCS_KWEXP_LKR)
941: buf[i++] = 'l';
942: }
943:
944: if ((tmp = strdup(buf)) == NULL) {
945: cvs_log(LP_ERRNO, "%s: failed to copy expansion mode",
946: file->rf_path);
947: return (-1);
948: }
949:
1.27 jfb 950: if (file->rf_expand != NULL)
951: free(file->rf_expand);
1.26 jfb 952: file->rf_expand = tmp;
953:
954: return (0);
955: }
956:
957: /*
958: * rcs_kwexp_get()
959: *
960: * Retrieve the keyword expansion mode to be used for the RCS file <file>.
961: */
962: int
963: rcs_kwexp_get(RCSFILE *file)
964: {
965: return rcs_kflag_get(file->rf_expand);
966: }
967:
968: /*
1.20 jfb 969: * rcs_kflag_get()
970: *
971: * Get the keyword expansion mode from a set of character flags given in
972: * <flags> and return the appropriate flag mask. In case of an error, the
973: * returned mask will have the RCS_KWEXP_ERR bit set to 1.
974: */
975: int
976: rcs_kflag_get(const char *flags)
977: {
978: int fl;
979: size_t len;
980: const char *fp;
981:
982: fl = 0;
983: len = strlen(flags);
984:
985: for (fp = flags; *fp != '\0'; fp++) {
986: if (*fp == 'k')
987: fl |= RCS_KWEXP_NAME;
988: else if (*fp == 'v')
989: fl |= RCS_KWEXP_VAL;
990: else if (*fp == 'l')
991: fl |= RCS_KWEXP_LKR;
992: else if (*fp == 'o') {
993: if (len != 1)
994: fl |= RCS_KWEXP_ERR;
995: fl |= RCS_KWEXP_OLD;
996: } else if (*fp == 'b') {
997: if (len != 1)
998: fl |= RCS_KWEXP_ERR;
999: } else /* unknown letter */
1000: fl |= RCS_KWEXP_ERR;
1001: }
1002:
1003: return (fl);
1.1 jfb 1004: }
1005:
1.21 jfb 1006: void
1007: rcs_kflag_usage(void)
1008: {
1009: fprintf(stderr, "Valid expansion modes include:\n"
1.22 jfb 1010: "\t-kkv\tGenerate keywords using the default form.\n"
1011: "\t-kkvl\tLike -kkv, except locker's name inserted.\n"
1012: "\t-kk\tGenerate only keyword names in keyword strings.\n"
1013: "\t-kv\tGenerate only keyword values in keyword strings.\n"
1014: "\t-ko\tGenerate old keyword string "
1.21 jfb 1015: "(no changes from checked in file).\n"
1.22 jfb 1016: "\t-kb\tGenerate binary file unmodified (merges not allowed).\n");
1.21 jfb 1017: }
1.1 jfb 1018:
1.26 jfb 1019:
1.1 jfb 1020: /*
1021: * rcs_parse()
1022: *
1023: * Parse the contents of file <path>, which are in the RCS format.
1024: * Returns 0 on success, or -1 on failure.
1025: */
1.26 jfb 1026: static int
1.1 jfb 1027: rcs_parse(RCSFILE *rfp)
1028: {
1029: int ret;
1030: struct rcs_pdata *pdp;
1031:
1.26 jfb 1032: if (rfp->rf_flags & RCS_PARSED)
1.1 jfb 1033: return (0);
1034:
1.26 jfb 1035: if ((pdp = (struct rcs_pdata *)malloc(sizeof(*pdp))) == NULL) {
1.1 jfb 1036: cvs_log(LP_ERRNO, "failed to allocate RCS parser data");
1037: return (-1);
1038: }
1039: memset(pdp, 0, sizeof(*pdp));
1040:
1.18 jfb 1041: pdp->rp_lines = 0;
1.1 jfb 1042: pdp->rp_pttype = RCS_TOK_ERR;
1043:
1044: pdp->rp_file = fopen(rfp->rf_path, "r");
1045: if (pdp->rp_file == NULL) {
1046: cvs_log(LP_ERRNO, "failed to open RCS file `%s'", rfp->rf_path);
1047: rcs_freepdata(pdp);
1048: return (-1);
1049: }
1050:
1051: pdp->rp_buf = (char *)malloc(RCS_BUFSIZE);
1052: if (pdp->rp_buf == NULL) {
1053: cvs_log(LP_ERRNO, "failed to allocate RCS parser buffer");
1054: rcs_freepdata(pdp);
1055: return (-1);
1056: }
1057: pdp->rp_blen = RCS_BUFSIZE;
1.18 jfb 1058: pdp->rp_bufend = pdp->rp_buf + pdp->rp_blen - 1;
1.1 jfb 1059:
1060: /* ditch the strict lock */
1.26 jfb 1061: rfp->rf_flags &= ~RCS_SLOCK;
1.1 jfb 1062: rfp->rf_pdata = pdp;
1063:
1064: if (rcs_parse_admin(rfp) < 0) {
1065: rcs_freepdata(pdp);
1066: return (-1);
1067: }
1068:
1069: for (;;) {
1070: ret = rcs_parse_delta(rfp);
1071: if (ret == 0)
1072: break;
1073: else if (ret == -1) {
1074: rcs_freepdata(pdp);
1075: return (-1);
1076: }
1077: }
1078:
1079: ret = rcs_gettok(rfp);
1080: if (ret != RCS_TOK_DESC) {
1081: cvs_log(LP_ERR, "token `%s' found where RCS desc expected",
1082: RCS_TOKSTR(rfp));
1083: rcs_freepdata(pdp);
1084: return (-1);
1085: }
1086:
1087: ret = rcs_gettok(rfp);
1088: if (ret != RCS_TOK_STRING) {
1089: cvs_log(LP_ERR, "token `%s' found where RCS desc expected",
1090: RCS_TOKSTR(rfp));
1091: rcs_freepdata(pdp);
1092: return (-1);
1093: }
1094:
1095: rfp->rf_desc = strdup(RCS_TOKSTR(rfp));
1.10 joris 1096: if (rfp->rf_desc == NULL) {
1097: cvs_log(LP_ERRNO, "failed to duplicate rcs token");
1098: rcs_freepdata(pdp);
1099: return (-1);
1100: }
1.1 jfb 1101:
1102: for (;;) {
1103: ret = rcs_parse_deltatext(rfp);
1104: if (ret == 0)
1105: break;
1106: else if (ret == -1) {
1107: rcs_freepdata(pdp);
1108: return (-1);
1109: }
1110: }
1111:
1112: cvs_log(LP_DEBUG, "RCS file `%s' parsed OK (%u lines)", rfp->rf_path,
1.18 jfb 1113: pdp->rp_lines);
1.1 jfb 1114:
1115: rcs_freepdata(pdp);
1116:
1117: rfp->rf_pdata = NULL;
1.26 jfb 1118: rfp->rf_flags |= RCS_PARSED | RCS_SYNCED;
1.1 jfb 1119:
1120: return (0);
1121: }
1122:
1123:
1124: /*
1125: * rcs_parse_admin()
1126: *
1127: * Parse the administrative portion of an RCS file.
1128: * Returns 0 on success, or -1 on failure.
1129: */
1130: static int
1131: rcs_parse_admin(RCSFILE *rfp)
1132: {
1133: u_int i;
1134: int tok, ntok, hmask;
1135: struct rcs_key *rk;
1136:
1137: /* hmask is a mask of the headers already encountered */
1138: hmask = 0;
1139: for (;;) {
1140: tok = rcs_gettok(rfp);
1141: if (tok == RCS_TOK_ERR) {
1142: cvs_log(LP_ERR, "parse error in RCS admin section");
1143: return (-1);
1.14 deraadt 1144: } else if (tok == RCS_TOK_NUM) {
1.1 jfb 1145: /* assume this is the start of the first delta */
1146: rcs_pushtok(rfp, RCS_TOKSTR(rfp), tok);
1147: return (0);
1148: }
1149:
1150: rk = NULL;
1.18 jfb 1151: for (i = 0; i < RCS_NKEYS; i++)
1.1 jfb 1152: if (rcs_keys[i].rk_id == tok)
1153: rk = &(rcs_keys[i]);
1154:
1155: if (hmask & (1 << tok)) {
1156: cvs_log(LP_ERR, "duplicate RCS key");
1157: return (-1);
1158: }
1159: hmask |= (1 << tok);
1160:
1161: switch (tok) {
1162: case RCS_TOK_HEAD:
1163: case RCS_TOK_BRANCH:
1164: case RCS_TOK_COMMENT:
1165: case RCS_TOK_EXPAND:
1166: ntok = rcs_gettok(rfp);
1167: if (ntok == RCS_TOK_SCOLON)
1168: break;
1169: if (ntok != rk->rk_val) {
1170: cvs_log(LP_ERR,
1171: "invalid value type for RCS key `%s'",
1172: rk->rk_str);
1173: }
1174:
1175: if (tok == RCS_TOK_HEAD) {
1.28 jfb 1176: if (rfp->rf_head == NULL) {
1177: rfp->rf_head = rcsnum_alloc();
1178: if (rfp->rf_head == NULL)
1179: return (-1);
1180: }
1.1 jfb 1181: rcsnum_aton(RCS_TOKSTR(rfp), NULL,
1182: rfp->rf_head);
1.14 deraadt 1183: } else if (tok == RCS_TOK_BRANCH) {
1.1 jfb 1184: rcsnum_aton(RCS_TOKSTR(rfp), NULL,
1185: rfp->rf_branch);
1.14 deraadt 1186: } else if (tok == RCS_TOK_COMMENT) {
1.1 jfb 1187: rfp->rf_comment = strdup(RCS_TOKSTR(rfp));
1.10 joris 1188: if (rfp->rf_comment == NULL) {
1189: cvs_log(LP_ERRNO,
1190: "failed to duplicate rcs token");
1191: return (-1);
1192: }
1.14 deraadt 1193: } else if (tok == RCS_TOK_EXPAND) {
1.1 jfb 1194: rfp->rf_expand = strdup(RCS_TOKSTR(rfp));
1.10 joris 1195: if (rfp->rf_expand == NULL) {
1196: cvs_log(LP_ERRNO,
1197: "failed to duplicate rcs token");
1198: return (-1);
1199: }
1.1 jfb 1200: }
1201:
1202: /* now get the expected semi-colon */
1203: ntok = rcs_gettok(rfp);
1204: if (ntok != RCS_TOK_SCOLON) {
1205: cvs_log(LP_ERR,
1206: "missing semi-colon after RCS `%s' key",
1.26 jfb 1207: rk->rk_str);
1.1 jfb 1208: return (-1);
1209: }
1210: break;
1211: case RCS_TOK_ACCESS:
1.29 ! jfb 1212: if (rcs_parse_access(rfp) < 0)
! 1213: return (-1);
1.1 jfb 1214: break;
1215: case RCS_TOK_SYMBOLS:
1.29 ! jfb 1216: if (rcs_parse_symbols(rfp) < 0)
! 1217: return (-1);
1.1 jfb 1218: break;
1219: case RCS_TOK_LOCKS:
1.29 ! jfb 1220: if (rcs_parse_locks(rfp) < 0)
! 1221: return (-1);
1.1 jfb 1222: break;
1223: default:
1224: cvs_log(LP_ERR,
1225: "unexpected token `%s' in RCS admin section",
1226: RCS_TOKSTR(rfp));
1227: return (-1);
1228: }
1229: }
1230:
1231: return (0);
1232: }
1233:
1234:
1235: /*
1236: * rcs_parse_delta()
1237: *
1238: * Parse an RCS delta section and allocate the structure to store that delta's
1239: * information in the <rfp> delta list.
1240: * Returns 1 if the section was parsed OK, 0 if it is the last delta, and
1241: * -1 on error.
1242: */
1243: static int
1244: rcs_parse_delta(RCSFILE *rfp)
1245: {
1246: int ret, tok, ntok, hmask;
1247: u_int i;
1248: char *tokstr;
1.3 vincent 1249: RCSNUM *datenum;
1.1 jfb 1250: struct rcs_delta *rdp;
1251: struct rcs_key *rk;
1252:
1253: rdp = (struct rcs_delta *)malloc(sizeof(*rdp));
1254: if (rdp == NULL) {
1255: cvs_log(LP_ERRNO, "failed to allocate RCS delta structure");
1256: return (-1);
1257: }
1258: memset(rdp, 0, sizeof(*rdp));
1259:
1260: rdp->rd_num = rcsnum_alloc();
1.11 joris 1261: if (rdp->rd_num == NULL) {
1262: rcs_freedelta(rdp);
1263: return (-1);
1264: }
1.1 jfb 1265: rdp->rd_next = rcsnum_alloc();
1.11 joris 1266: if (rdp->rd_next == NULL) {
1267: rcs_freedelta(rdp);
1268: return (-1);
1269: }
1.1 jfb 1270:
1271: TAILQ_INIT(&(rdp->rd_branches));
1272:
1273: tok = rcs_gettok(rfp);
1274: if (tok != RCS_TOK_NUM) {
1275: cvs_log(LP_ERR, "unexpected token `%s' at start of delta",
1276: RCS_TOKSTR(rfp));
1277: rcs_freedelta(rdp);
1278: return (-1);
1279: }
1280: rcsnum_aton(RCS_TOKSTR(rfp), NULL, rdp->rd_num);
1281:
1282: hmask = 0;
1283: ret = 0;
1284: tokstr = NULL;
1285:
1286: for (;;) {
1287: tok = rcs_gettok(rfp);
1288: if (tok == RCS_TOK_ERR) {
1289: cvs_log(LP_ERR, "parse error in RCS delta section");
1290: rcs_freedelta(rdp);
1291: return (-1);
1.14 deraadt 1292: } else if (tok == RCS_TOK_NUM || tok == RCS_TOK_DESC) {
1.15 tedu 1293: rcs_pushtok(rfp, RCS_TOKSTR(rfp), tok);
1.1 jfb 1294: ret = (tok == RCS_TOK_NUM ? 1 : 0);
1295: break;
1296: }
1297:
1298: rk = NULL;
1.18 jfb 1299: for (i = 0; i < RCS_NKEYS; i++)
1.1 jfb 1300: if (rcs_keys[i].rk_id == tok)
1301: rk = &(rcs_keys[i]);
1302:
1303: if (hmask & (1 << tok)) {
1304: cvs_log(LP_ERR, "duplicate RCS key");
1305: rcs_freedelta(rdp);
1306: return (-1);
1307: }
1308: hmask |= (1 << tok);
1309:
1310: switch (tok) {
1311: case RCS_TOK_DATE:
1312: case RCS_TOK_AUTHOR:
1313: case RCS_TOK_STATE:
1314: case RCS_TOK_NEXT:
1315: ntok = rcs_gettok(rfp);
1316: if (ntok == RCS_TOK_SCOLON) {
1317: if (rk->rk_flags & RCS_VOPT)
1318: break;
1319: else {
1320: cvs_log(LP_ERR, "missing mandatory "
1321: "value to RCS key `%s'",
1322: rk->rk_str);
1323: rcs_freedelta(rdp);
1324: return (-1);
1325: }
1326: }
1327:
1328: if (ntok != rk->rk_val) {
1329: cvs_log(LP_ERR,
1330: "invalid value type for RCS key `%s'",
1331: rk->rk_str);
1332: rcs_freedelta(rdp);
1333: return (-1);
1334: }
1335:
1336: if (tokstr != NULL)
1337: free(tokstr);
1338: tokstr = strdup(RCS_TOKSTR(rfp));
1.10 joris 1339: if (tokstr == NULL) {
1.15 tedu 1340: cvs_log(LP_ERRNO,
1.10 joris 1341: "failed to duplicate rcs token");
1342: rcs_freedelta(rdp);
1343: return (-1);
1344: }
1.1 jfb 1345:
1346: /* now get the expected semi-colon */
1347: ntok = rcs_gettok(rfp);
1348: if (ntok != RCS_TOK_SCOLON) {
1349: cvs_log(LP_ERR,
1350: "missing semi-colon after RCS `%s' key",
1.26 jfb 1351: rk->rk_str);
1.1 jfb 1352: rcs_freedelta(rdp);
1353: return (-1);
1354: }
1355:
1356: if (tok == RCS_TOK_DATE) {
1.25 jfb 1357: if ((datenum = rcsnum_parse(tokstr)) == NULL) {
1.11 joris 1358: rcs_freedelta(rdp);
1359: return (-1);
1360: }
1.3 vincent 1361: if (datenum->rn_len != 6) {
1.1 jfb 1362: cvs_log(LP_ERR,
1363: "RCS date specification has %s "
1364: "fields",
1.3 vincent 1365: (datenum->rn_len > 6) ? "too many" :
1.1 jfb 1366: "missing");
1367: rcs_freedelta(rdp);
1368: }
1.3 vincent 1369: rdp->rd_date.tm_year = datenum->rn_id[0];
1.19 jfb 1370: if (rdp->rd_date.tm_year >= 1900)
1371: rdp->rd_date.tm_year -= 1900;
1.3 vincent 1372: rdp->rd_date.tm_mon = datenum->rn_id[1] - 1;
1373: rdp->rd_date.tm_mday = datenum->rn_id[2];
1374: rdp->rd_date.tm_hour = datenum->rn_id[3];
1375: rdp->rd_date.tm_min = datenum->rn_id[4];
1376: rdp->rd_date.tm_sec = datenum->rn_id[5];
1377: rcsnum_free(datenum);
1.14 deraadt 1378: } else if (tok == RCS_TOK_AUTHOR) {
1.1 jfb 1379: rdp->rd_author = tokstr;
1380: tokstr = NULL;
1.14 deraadt 1381: } else if (tok == RCS_TOK_STATE) {
1.1 jfb 1382: rdp->rd_state = tokstr;
1383: tokstr = NULL;
1.14 deraadt 1384: } else if (tok == RCS_TOK_NEXT) {
1.1 jfb 1385: rcsnum_aton(tokstr, NULL, rdp->rd_next);
1386: }
1387: break;
1388: case RCS_TOK_BRANCHES:
1389: rcs_parse_branches(rfp, rdp);
1390: break;
1391: default:
1392: cvs_log(LP_ERR,
1393: "unexpected token `%s' in RCS delta",
1394: RCS_TOKSTR(rfp));
1395: rcs_freedelta(rdp);
1396: return (-1);
1397: }
1398: }
1399:
1.13 jfb 1400: if (tokstr != NULL)
1401: free(tokstr);
1402:
1.1 jfb 1403: TAILQ_INSERT_TAIL(&(rfp->rf_delta), rdp, rd_list);
1.26 jfb 1404: rfp->rf_ndelta++;
1.1 jfb 1405:
1406: return (ret);
1407: }
1408:
1409:
1410: /*
1411: * rcs_parse_deltatext()
1412: *
1413: * Parse an RCS delta text section and fill in the log and text field of the
1414: * appropriate delta section.
1415: * Returns 1 if the section was parsed OK, 0 if it is the last delta, and
1416: * -1 on error.
1417: */
1418: static int
1419: rcs_parse_deltatext(RCSFILE *rfp)
1420: {
1421: int tok;
1422: RCSNUM *tnum;
1423: struct rcs_delta *rdp;
1424:
1425: tok = rcs_gettok(rfp);
1426: if (tok == RCS_TOK_EOF)
1427: return (0);
1428:
1429: if (tok != RCS_TOK_NUM) {
1430: cvs_log(LP_ERR,
1431: "unexpected token `%s' at start of RCS delta text",
1432: RCS_TOKSTR(rfp));
1433: return (-1);
1434: }
1.13 jfb 1435:
1436: tnum = rcsnum_alloc();
1437: if (tnum == NULL)
1438: return (-1);
1.1 jfb 1439: rcsnum_aton(RCS_TOKSTR(rfp), NULL, tnum);
1440:
1441: TAILQ_FOREACH(rdp, &(rfp->rf_delta), rd_list) {
1442: if (rcsnum_cmp(tnum, rdp->rd_num, 0) == 0)
1443: break;
1444: }
1.13 jfb 1445: rcsnum_free(tnum);
1446:
1.1 jfb 1447: if (rdp == NULL) {
1448: cvs_log(LP_ERR, "RCS delta text `%s' has no matching delta",
1449: RCS_TOKSTR(rfp));
1450: return (-1);
1451: }
1452:
1453: tok = rcs_gettok(rfp);
1454: if (tok != RCS_TOK_LOG) {
1455: cvs_log(LP_ERR, "unexpected token `%s' where RCS log expected",
1456: RCS_TOKSTR(rfp));
1457: return (-1);
1458: }
1459:
1460: tok = rcs_gettok(rfp);
1461: if (tok != RCS_TOK_STRING) {
1462: cvs_log(LP_ERR, "unexpected token `%s' where RCS log expected",
1463: RCS_TOKSTR(rfp));
1464: return (-1);
1465: }
1466: rdp->rd_log = strdup(RCS_TOKSTR(rfp));
1467: if (rdp->rd_log == NULL) {
1468: cvs_log(LP_ERRNO, "failed to copy RCS deltatext log");
1469: return (-1);
1470: }
1471:
1472: tok = rcs_gettok(rfp);
1473: if (tok != RCS_TOK_TEXT) {
1474: cvs_log(LP_ERR, "unexpected token `%s' where RCS text expected",
1475: RCS_TOKSTR(rfp));
1476: return (-1);
1477: }
1478:
1479: tok = rcs_gettok(rfp);
1480: if (tok != RCS_TOK_STRING) {
1481: cvs_log(LP_ERR, "unexpected token `%s' where RCS text expected",
1482: RCS_TOKSTR(rfp));
1483: return (-1);
1484: }
1485:
1486: rdp->rd_text = strdup(RCS_TOKSTR(rfp));
1487: if (rdp->rd_text == NULL) {
1488: cvs_log(LP_ERRNO, "failed to copy RCS delta text");
1489: return (-1);
1490: }
1491:
1492: return (1);
1493: }
1494:
1495:
1496: /*
1497: * rcs_parse_access()
1498: *
1499: * Parse the access list given as value to the `access' keyword.
1500: * Returns 0 on success, or -1 on failure.
1501: */
1502: static int
1503: rcs_parse_access(RCSFILE *rfp)
1504: {
1505: int type;
1506:
1507: while ((type = rcs_gettok(rfp)) != RCS_TOK_SCOLON) {
1508: if (type != RCS_TOK_ID) {
1509: cvs_log(LP_ERR, "unexpected token `%s' in access list",
1510: RCS_TOKSTR(rfp));
1511: return (-1);
1512: }
1.29 ! jfb 1513:
! 1514: if (rcs_access_add(rfp, RCS_TOKSTR(rfp)) < 0)
! 1515: return (-1);
1.1 jfb 1516: }
1517:
1518: return (0);
1519: }
1520:
1521:
1522: /*
1523: * rcs_parse_symbols()
1524: *
1525: * Parse the symbol list given as value to the `symbols' keyword.
1526: * Returns 0 on success, or -1 on failure.
1527: */
1528: static int
1529: rcs_parse_symbols(RCSFILE *rfp)
1530: {
1531: int type;
1532: struct rcs_sym *symp;
1533:
1534: for (;;) {
1535: type = rcs_gettok(rfp);
1536: if (type == RCS_TOK_SCOLON)
1537: break;
1538:
1539: if (type != RCS_TOK_STRING) {
1540: cvs_log(LP_ERR, "unexpected token `%s' in symbol list",
1541: RCS_TOKSTR(rfp));
1542: return (-1);
1543: }
1544:
1545: symp = (struct rcs_sym *)malloc(sizeof(*symp));
1546: if (symp == NULL) {
1547: cvs_log(LP_ERRNO, "failed to allocate RCS symbol");
1548: return (-1);
1549: }
1550: symp->rs_name = strdup(RCS_TOKSTR(rfp));
1.10 joris 1551: if (symp->rs_name == NULL) {
1552: cvs_log(LP_ERRNO, "failed to duplicate rcs token");
1553: free(symp);
1554: return (-1);
1555: }
1556:
1.1 jfb 1557: symp->rs_num = rcsnum_alloc();
1.11 joris 1558: if (symp->rs_num == NULL) {
1559: cvs_log(LP_ERRNO, "failed to allocate rcsnum info");
1560: free(symp);
1561: return (-1);
1562: }
1.1 jfb 1563:
1564: type = rcs_gettok(rfp);
1565: if (type != RCS_TOK_COLON) {
1566: cvs_log(LP_ERR, "unexpected token `%s' in symbol list",
1567: RCS_TOKSTR(rfp));
1.11 joris 1568: rcsnum_free(symp->rs_num);
1.1 jfb 1569: free(symp->rs_name);
1570: free(symp);
1571: return (-1);
1572: }
1573:
1574: type = rcs_gettok(rfp);
1575: if (type != RCS_TOK_NUM) {
1576: cvs_log(LP_ERR, "unexpected token `%s' in symbol list",
1577: RCS_TOKSTR(rfp));
1.11 joris 1578: rcsnum_free(symp->rs_num);
1.1 jfb 1579: free(symp->rs_name);
1580: free(symp);
1581: return (-1);
1582: }
1583:
1584: if (rcsnum_aton(RCS_TOKSTR(rfp), NULL, symp->rs_num) < 0) {
1585: cvs_log(LP_ERR, "failed to parse RCS NUM `%s'",
1586: RCS_TOKSTR(rfp));
1.11 joris 1587: rcsnum_free(symp->rs_num);
1.1 jfb 1588: free(symp->rs_name);
1589: free(symp);
1590: return (-1);
1591: }
1592:
1593: TAILQ_INSERT_HEAD(&(rfp->rf_symbols), symp, rs_list);
1594: }
1595:
1596: return (0);
1597: }
1598:
1599:
1600: /*
1601: * rcs_parse_locks()
1602: *
1603: * Parse the lock list given as value to the `locks' keyword.
1604: * Returns 0 on success, or -1 on failure.
1605: */
1606: static int
1607: rcs_parse_locks(RCSFILE *rfp)
1608: {
1609: int type;
1610: struct rcs_lock *lkp;
1611:
1612: for (;;) {
1613: type = rcs_gettok(rfp);
1614: if (type == RCS_TOK_SCOLON)
1615: break;
1616:
1617: if (type != RCS_TOK_ID) {
1618: cvs_log(LP_ERR, "unexpected token `%s' in lock list",
1619: RCS_TOKSTR(rfp));
1620: return (-1);
1621: }
1622:
1623: lkp = (struct rcs_lock *)malloc(sizeof(*lkp));
1624: if (lkp == NULL) {
1625: cvs_log(LP_ERRNO, "failed to allocate RCS lock");
1626: return (-1);
1627: }
1628: lkp->rl_num = rcsnum_alloc();
1.11 joris 1629: if (lkp->rl_num == NULL) {
1630: free(lkp);
1631: return (-1);
1632: }
1.1 jfb 1633:
1634: type = rcs_gettok(rfp);
1635: if (type != RCS_TOK_COLON) {
1636: cvs_log(LP_ERR, "unexpected token `%s' in symbol list",
1637: RCS_TOKSTR(rfp));
1638: free(lkp);
1639: return (-1);
1640: }
1641:
1642: type = rcs_gettok(rfp);
1643: if (type != RCS_TOK_NUM) {
1644: cvs_log(LP_ERR, "unexpected token `%s' in symbol list",
1645: RCS_TOKSTR(rfp));
1646: free(lkp);
1647: return (-1);
1648: }
1649:
1650: if (rcsnum_aton(RCS_TOKSTR(rfp), NULL, lkp->rl_num) < 0) {
1651: cvs_log(LP_ERR, "failed to parse RCS NUM `%s'",
1652: RCS_TOKSTR(rfp));
1653: free(lkp);
1654: return (-1);
1655: }
1656:
1657: TAILQ_INSERT_HEAD(&(rfp->rf_locks), lkp, rl_list);
1658: }
1659:
1660: /* check if we have a `strict' */
1661: type = rcs_gettok(rfp);
1662: if (type != RCS_TOK_STRICT) {
1663: rcs_pushtok(rfp, RCS_TOKSTR(rfp), type);
1.14 deraadt 1664: } else {
1.26 jfb 1665: rfp->rf_flags |= RCS_SLOCK;
1.1 jfb 1666:
1667: type = rcs_gettok(rfp);
1668: if (type != RCS_TOK_SCOLON) {
1669: cvs_log(LP_ERR,
1670: "missing semi-colon after `strict' keyword");
1671: return (-1);
1672: }
1673: }
1674:
1675: return (0);
1676: }
1677:
1678: /*
1679: * rcs_parse_branches()
1680: *
1681: * Parse the list of branches following a `branches' keyword in a delta.
1682: * Returns 0 on success, or -1 on failure.
1683: */
1684: static int
1685: rcs_parse_branches(RCSFILE *rfp, struct rcs_delta *rdp)
1686: {
1687: int type;
1688: struct rcs_branch *brp;
1689:
1690: for (;;) {
1691: type = rcs_gettok(rfp);
1692: if (type == RCS_TOK_SCOLON)
1693: break;
1694:
1695: if (type != RCS_TOK_NUM) {
1696: cvs_log(LP_ERR,
1697: "unexpected token `%s' in list of branches",
1698: RCS_TOKSTR(rfp));
1699: return (-1);
1700: }
1701:
1702: brp = (struct rcs_branch *)malloc(sizeof(*brp));
1703: if (brp == NULL) {
1704: cvs_log(LP_ERRNO, "failed to allocate RCS branch");
1705: return (-1);
1706: }
1707: brp->rb_num = rcsnum_alloc();
1.11 joris 1708: if (brp->rb_num == NULL) {
1709: free(brp);
1710: return (-1);
1711: }
1712:
1.1 jfb 1713: rcsnum_aton(RCS_TOKSTR(rfp), NULL, brp->rb_num);
1714:
1715: TAILQ_INSERT_TAIL(&(rdp->rd_branches), brp, rb_list);
1716: }
1717:
1718: return (0);
1719: }
1720:
1721:
1722: /*
1723: * rcs_freedelta()
1724: *
1725: * Free the contents of a delta structure.
1726: */
1.18 jfb 1727: static void
1.1 jfb 1728: rcs_freedelta(struct rcs_delta *rdp)
1729: {
1.12 jfb 1730: struct rcs_branch *rb;
1.1 jfb 1731: struct rcs_delta *crdp;
1732:
1.12 jfb 1733: if (rdp->rd_num != NULL)
1734: rcsnum_free(rdp->rd_num);
1735: if (rdp->rd_next != NULL)
1736: rcsnum_free(rdp->rd_next);
1737:
1.1 jfb 1738: if (rdp->rd_author != NULL)
1739: free(rdp->rd_author);
1740: if (rdp->rd_state != NULL)
1741: free(rdp->rd_state);
1742: if (rdp->rd_log != NULL)
1743: free(rdp->rd_log);
1744: if (rdp->rd_text != NULL)
1745: free(rdp->rd_text);
1.12 jfb 1746:
1747: while ((rb = TAILQ_FIRST(&(rdp->rd_branches))) != NULL) {
1748: TAILQ_REMOVE(&(rdp->rd_branches), rb, rb_list);
1749: rcsnum_free(rb->rb_num);
1750: free(rb);
1751: }
1.1 jfb 1752:
1753: while ((crdp = TAILQ_FIRST(&(rdp->rd_snodes))) != NULL) {
1754: TAILQ_REMOVE(&(rdp->rd_snodes), crdp, rd_list);
1755: rcs_freedelta(crdp);
1756: }
1757:
1758: free(rdp);
1759: }
1760:
1761:
1762: /*
1763: * rcs_freepdata()
1764: *
1765: * Free the contents of the parser data structure.
1766: */
1767: static void
1768: rcs_freepdata(struct rcs_pdata *pd)
1769: {
1770: if (pd->rp_file != NULL)
1771: (void)fclose(pd->rp_file);
1772: if (pd->rp_buf != NULL)
1773: free(pd->rp_buf);
1774: free(pd);
1775: }
1776:
1777:
1778: /*
1779: * rcs_gettok()
1780: *
1781: * Get the next RCS token from the string <str>.
1782: */
1783: static int
1784: rcs_gettok(RCSFILE *rfp)
1785: {
1786: u_int i;
1787: int ch, last, type;
1.18 jfb 1788: size_t len;
1789: char *bp;
1.1 jfb 1790: struct rcs_pdata *pdp = (struct rcs_pdata *)rfp->rf_pdata;
1791:
1792: type = RCS_TOK_ERR;
1793: bp = pdp->rp_buf;
1794: *bp = '\0';
1795:
1796: if (pdp->rp_pttype != RCS_TOK_ERR) {
1797: type = pdp->rp_pttype;
1798: strlcpy(pdp->rp_buf, pdp->rp_ptok, pdp->rp_blen);
1799: pdp->rp_pttype = RCS_TOK_ERR;
1800: return (type);
1801: }
1802:
1803: /* skip leading whitespace */
1804: /* XXX we must skip backspace too for compatibility, should we? */
1805: do {
1806: ch = getc(pdp->rp_file);
1807: if (ch == '\n')
1.18 jfb 1808: pdp->rp_lines++;
1.1 jfb 1809: } while (isspace(ch));
1810:
1811: if (ch == EOF) {
1812: type = RCS_TOK_EOF;
1.14 deraadt 1813: } else if (ch == ';') {
1.1 jfb 1814: type = RCS_TOK_SCOLON;
1.14 deraadt 1815: } else if (ch == ':') {
1.1 jfb 1816: type = RCS_TOK_COLON;
1.14 deraadt 1817: } else if (isalpha(ch)) {
1.18 jfb 1818: type = RCS_TOK_STRING;
1.1 jfb 1819: *(bp++) = ch;
1.18 jfb 1820: for (;;) {
1.1 jfb 1821: ch = getc(pdp->rp_file);
1.11 joris 1822: if (!isalnum(ch) && ch != '_' && ch != '-') {
1.1 jfb 1823: ungetc(ch, pdp->rp_file);
1824: break;
1825: }
1826: *(bp++) = ch;
1.18 jfb 1827: if (bp == pdp->rp_bufend - 1) {
1828: len = bp - pdp->rp_buf;
1829: if (rcs_growbuf(rfp) < 0) {
1830: type = RCS_TOK_ERR;
1831: break;
1832: }
1833: bp = pdp->rp_buf + len;
1834: }
1.1 jfb 1835: }
1836: *bp = '\0';
1837:
1.18 jfb 1838: if (type != RCS_TOK_ERR) {
1839: for (i = 0; i < RCS_NKEYS; i++) {
1840: if (strcmp(rcs_keys[i].rk_str,
1841: pdp->rp_buf) == 0) {
1842: type = rcs_keys[i].rk_id;
1843: break;
1844: }
1.1 jfb 1845: }
1846: }
1.14 deraadt 1847: } else if (ch == '@') {
1.1 jfb 1848: /* we have a string */
1.18 jfb 1849: type = RCS_TOK_STRING;
1.1 jfb 1850: for (;;) {
1851: ch = getc(pdp->rp_file);
1852: if (ch == '@') {
1853: ch = getc(pdp->rp_file);
1854: if (ch != '@') {
1855: ungetc(ch, pdp->rp_file);
1856: break;
1857: }
1.14 deraadt 1858: } else if (ch == '\n')
1.18 jfb 1859: pdp->rp_lines++;
1.1 jfb 1860:
1861: *(bp++) = ch;
1.18 jfb 1862: if (bp == pdp->rp_bufend - 1) {
1863: len = bp - pdp->rp_buf;
1864: if (rcs_growbuf(rfp) < 0) {
1865: type = RCS_TOK_ERR;
1866: break;
1867: }
1868: bp = pdp->rp_buf + len;
1869: }
1.1 jfb 1870: }
1871:
1872: *bp = '\0';
1.14 deraadt 1873: } else if (isdigit(ch)) {
1.1 jfb 1874: *(bp++) = ch;
1875: last = ch;
1876: type = RCS_TOK_NUM;
1877:
1878: for (;;) {
1879: ch = getc(pdp->rp_file);
1.18 jfb 1880: if (bp == pdp->rp_bufend)
1.1 jfb 1881: break;
1882: if (!isdigit(ch) && ch != '.') {
1883: ungetc(ch, pdp->rp_file);
1884: break;
1885: }
1886:
1887: if (last == '.' && ch == '.') {
1888: type = RCS_TOK_ERR;
1889: break;
1890: }
1891: last = ch;
1892: *(bp++) = ch;
1893: }
1.18 jfb 1894: *bp = '\0';
1.1 jfb 1895: }
1896:
1897: return (type);
1898: }
1899:
1900:
1901: /*
1902: * rcs_pushtok()
1903: *
1904: * Push a token back in the parser's token buffer.
1905: */
1906: static int
1907: rcs_pushtok(RCSFILE *rfp, const char *tok, int type)
1908: {
1909: struct rcs_pdata *pdp = (struct rcs_pdata *)rfp->rf_pdata;
1910:
1911: if (pdp->rp_pttype != RCS_TOK_ERR)
1912: return (-1);
1913:
1914: pdp->rp_pttype = type;
1915: strlcpy(pdp->rp_ptok, tok, sizeof(pdp->rp_ptok));
1916: return (0);
1917: }
1918:
1919:
1920: /*
1921: * rcs_stresc()
1922: *
1923: * Performs either escaping or unescaping of the string stored in <str>.
1924: * The operation is to escape special RCS characters if the <esc> argument
1925: * is 1, or unescape otherwise. The result is stored in the <buf> destination
1926: * buffer, and <blen> must originally point to the size of <buf>.
1927: * Returns the number of bytes which have been read from the source <str> and
1928: * operated on. The <blen> parameter will contain the number of bytes
1929: * actually copied in <buf>.
1930: */
1931: size_t
1932: rcs_stresc(int esc, const char *str, char *buf, size_t *blen)
1933: {
1934: size_t rlen;
1935: const char *sp;
1936: char *bp, *bep;
1937:
1938: rlen = 0;
1939: bp = buf;
1940: bep = buf + *blen - 1;
1941:
1942: for (sp = str; (*sp != '\0') && (bp <= (bep - 1)); sp++) {
1943: if (*sp == '@') {
1944: if (esc) {
1945: if (bp > (bep - 2))
1946: break;
1947: *(bp++) = '@';
1.14 deraadt 1948: } else {
1.1 jfb 1949: sp++;
1950: if (*sp != '@') {
1951: cvs_log(LP_WARN,
1952: "unknown escape character `%c' in "
1953: "RCS file", *sp);
1954: if (*sp == '\0')
1955: break;
1956: }
1957: }
1958: }
1959:
1960: *(bp++) = *sp;
1961: }
1962:
1963: *bp = '\0';
1964: *blen = (bp - buf);
1965: return (sp - str);
1966: }
1967:
1968:
1969: /*
1970: * rcs_splitlines()
1971: *
1972: * Split the contents of a file into a list of lines.
1973: */
1974: static struct rcs_foo*
1975: rcs_splitlines(const char *fcont)
1976: {
1977: char *dcp;
1978: struct rcs_foo *foo;
1979: struct rcs_line *lp;
1980:
1981: foo = (struct rcs_foo *)malloc(sizeof(*foo));
1982: if (foo == NULL) {
1983: cvs_log(LP_ERR, "failed to allocate line structure");
1984: return (NULL);
1985: }
1986: TAILQ_INIT(&(foo->rl_lines));
1987: foo->rl_nblines = 0;
1988: foo->rl_data = strdup(fcont);
1989: if (foo->rl_data == NULL) {
1990: cvs_log(LP_ERRNO, "failed to copy file contents");
1991: free(foo);
1992: return (NULL);
1993: }
1994:
1995: /*
1996: * Add a first bogus line with line number 0. This is used so we
1997: * can position the line pointer before 1 when changing the first line
1998: * in rcs_patch().
1999: */
2000: lp = (struct rcs_line *)malloc(sizeof(*lp));
1.5 vincent 2001: if (lp == NULL)
1.1 jfb 2002: return (NULL);
1.5 vincent 2003:
1.1 jfb 2004: lp->rl_line = NULL;
2005: lp->rl_lineno = 0;
2006: TAILQ_INSERT_TAIL(&(foo->rl_lines), lp, rl_list);
2007:
2008:
2009: for (dcp = foo->rl_data; *dcp != '\0';) {
2010: lp = (struct rcs_line *)malloc(sizeof(*lp));
2011: if (lp == NULL) {
2012: cvs_log(LP_ERR, "failed to allocate line entry");
2013: return (NULL);
2014: }
2015:
2016: lp->rl_line = dcp;
2017: lp->rl_lineno = ++(foo->rl_nblines);
2018: TAILQ_INSERT_TAIL(&(foo->rl_lines), lp, rl_list);
2019:
2020: dcp = strchr(dcp, '\n');
2021: if (dcp == NULL) {
2022: break;
2023: }
2024: *(dcp++) = '\0';
2025: }
2026:
2027: return (foo);
1.5 vincent 2028: }
2029:
2030: static void
2031: rcs_freefoo(struct rcs_foo *fp)
2032: {
2033: struct rcs_line *lp;
2034:
2035: while ((lp = TAILQ_FIRST(&fp->rl_lines)) != NULL) {
2036: TAILQ_REMOVE(&fp->rl_lines, lp, rl_list);
2037: free(lp);
2038: }
2039: free(fp->rl_data);
2040: free(fp);
1.18 jfb 2041: }
2042:
2043: /*
2044: * rcs_growbuf()
2045: *
2046: * Attempt to grow the internal parse buffer for the RCS file <rf> by
2047: * RCS_BUFEXTSIZE.
2048: * In case of failure, the original buffer is left unmodified.
2049: * Returns 0 on success, or -1 on failure.
2050: */
2051: static int
2052: rcs_growbuf(RCSFILE *rf)
2053: {
2054: void *tmp;
2055: struct rcs_pdata *pdp = (struct rcs_pdata *)rf->rf_pdata;
2056:
2057: tmp = realloc(pdp->rp_buf, pdp->rp_blen + RCS_BUFEXTSIZE);
2058: if (tmp == NULL) {
2059: cvs_log(LP_ERRNO, "failed to grow RCS parse buffer");
2060: return (-1);
2061: }
2062:
2063: pdp->rp_buf = (char *)tmp;
2064: pdp->rp_blen += RCS_BUFEXTSIZE;
2065: pdp->rp_bufend = pdp->rp_buf + pdp->rp_blen - 1;
2066:
2067: return (0);
1.1 jfb 2068: }