![[BACK]](/icons/back.gif){kind=icon}
Return to rcs.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / rcs|
Return to rcs.c CVS log | Up to [local] / src / usr.bin / rcs |
1.44 ! tobias 1: /* $OpenBSD: rcs.c,v 1.43 2008/01/06 09:12:17 sturm Exp $ */
1.1 joris 2: /*
3: * Copyright (c) 2004 Jean-Francois Brousseau <jfb@openbsd.org>
4: * All rights reserved.
5: *
6: * Redistribution and use in source and binary forms, with or without
7: * modification, are permitted provided that the following conditions
8: * are met:
9: *
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. The name of the author may not be used to endorse or promote products
13: * derived from this software without specific prior written permission.
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
24: * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25: */
26:
1.36 xsa 27: #include <sys/stat.h>
28:
29: #include <ctype.h>
30: #include <err.h>
31: #include <errno.h>
32: #include <libgen.h>
33: #include <pwd.h>
34: #include <stdarg.h>
35: #include <stdio.h>
36: #include <stdlib.h>
37: #include <string.h>
38: #include <unistd.h>
1.1 joris 39:
40: #include "diff.h"
41: #include "rcs.h"
42: #include "rcsprog.h"
1.4 xsa 43: #include "rcsutil.h"
1.1 joris 44: #include "xmalloc.h"
45:
46: #define RCS_BUFSIZE 16384
47: #define RCS_BUFEXTSIZE 8192
48: #define RCS_KWEXP_SIZE 1024
49:
50: /* RCS token types */
51: #define RCS_TOK_ERR -1
52: #define RCS_TOK_EOF 0
53: #define RCS_TOK_NUM 1
54: #define RCS_TOK_ID 2
55: #define RCS_TOK_STRING 3
56: #define RCS_TOK_SCOLON 4
57: #define RCS_TOK_COLON 5
58:
59: #define RCS_TOK_HEAD 8
60: #define RCS_TOK_BRANCH 9
61: #define RCS_TOK_ACCESS 10
62: #define RCS_TOK_SYMBOLS 11
63: #define RCS_TOK_LOCKS 12
64: #define RCS_TOK_COMMENT 13
65: #define RCS_TOK_EXPAND 14
66: #define RCS_TOK_DATE 15
67: #define RCS_TOK_AUTHOR 16
68: #define RCS_TOK_STATE 17
69: #define RCS_TOK_NEXT 18
70: #define RCS_TOK_BRANCHES 19
71: #define RCS_TOK_DESC 20
72: #define RCS_TOK_LOG 21
73: #define RCS_TOK_TEXT 22
74: #define RCS_TOK_STRICT 23
1.43 sturm 75: #define RCS_TOK_COMMITID 24
1.1 joris 76:
77: #define RCS_ISKEY(t) (((t) >= RCS_TOK_HEAD) && ((t) <= RCS_TOK_BRANCHES))
78:
79: #define RCS_NOSCOL 0x01 /* no terminating semi-colon */
80: #define RCS_VOPT 0x02 /* value is optional */
81:
82: /* opaque parse data */
83: struct rcs_pdata {
84: u_int rp_lines;
85:
86: char *rp_buf;
87: size_t rp_blen;
88: char *rp_bufend;
89: size_t rp_tlen;
90:
91: /* pushback token buffer */
92: char rp_ptok[128];
93: int rp_pttype; /* token type, RCS_TOK_ERR if no token */
94:
95: FILE *rp_file;
96: };
97:
98: #define RCS_TOKSTR(rfp) ((struct rcs_pdata *)rfp->rf_pdata)->rp_buf
99: #define RCS_TOKLEN(rfp) ((struct rcs_pdata *)rfp->rf_pdata)->rp_tlen
100:
101: /* invalid characters in RCS symbol names */
102: static const char rcs_sym_invch[] = RCS_SYM_INVALCHAR;
103:
104: /* comment leaders, depending on the file's suffix */
105: static const struct rcs_comment {
106: const char *rc_suffix;
107: const char *rc_cstr;
108: } rcs_comments[] = {
109: { "1", ".\\\" " },
110: { "2", ".\\\" " },
111: { "3", ".\\\" " },
112: { "4", ".\\\" " },
113: { "5", ".\\\" " },
114: { "6", ".\\\" " },
115: { "7", ".\\\" " },
116: { "8", ".\\\" " },
117: { "9", ".\\\" " },
118: { "a", "-- " }, /* Ada */
119: { "ada", "-- " },
120: { "adb", "-- " },
121: { "asm", ";; " }, /* assembler (MS-DOS) */
122: { "ads", "-- " }, /* Ada */
123: { "bat", ":: " }, /* batch (MS-DOS) */
124: { "body", "-- " }, /* Ada */
125: { "c", " * " }, /* C */
126: { "c++", "// " }, /* C++ */
127: { "cc", "// " },
128: { "cpp", "// " },
129: { "cxx", "// " },
130: { "m", "// " }, /* Objective-C */
131: { "cl", ";;; " }, /* Common Lisp */
132: { "cmd", ":: " }, /* command (OS/2) */
133: { "cmf", "c " }, /* CM Fortran */
134: { "csh", "# " }, /* shell */
135: { "e", "# " }, /* efl */
136: { "epsf", "% " }, /* encapsulated postscript */
137: { "epsi", "% " }, /* encapsulated postscript */
138: { "el", "; " }, /* Emacs Lisp */
139: { "f", "c " }, /* Fortran */
140: { "for", "c " },
141: { "h", " * " }, /* C-header */
142: { "hh", "// " }, /* C++ header */
143: { "hpp", "// " },
144: { "hxx", "// " },
145: { "in", "# " }, /* for Makefile.in */
146: { "l", " * " }, /* lex */
147: { "mac", ";; " }, /* macro (DEC-10, MS-DOS, PDP-11, VMS, etc) */
148: { "mak", "# " }, /* makefile, e.g. Visual C++ */
149: { "me", ".\\\" " }, /* me-macros t/nroff */
150: { "ml", "; " }, /* mocklisp */
151: { "mm", ".\\\" " }, /* mm-macros t/nroff */
152: { "ms", ".\\\" " }, /* ms-macros t/nroff */
153: { "man", ".\\\" " }, /* man-macros t/nroff */
154: { "p", " * " }, /* pascal */
155: { "pas", " * " },
156: { "pl", "# " }, /* Perl (conflict with Prolog) */
157: { "pm", "# " }, /* Perl module */
158: { "ps", "% " }, /* postscript */
159: { "psw", "% " }, /* postscript wrap */
160: { "pswm", "% " }, /* postscript wrap */
161: { "r", "# " }, /* ratfor */
162: { "rc", " * " }, /* Microsoft Windows resource file */
163: { "red", "% " }, /* psl/rlisp */
164: { "sh", "# " }, /* shell */
165: { "sl", "% " }, /* psl */
166: { "spec", "-- " }, /* Ada */
167: { "tex", "% " }, /* tex */
168: { "y", " * " }, /* yacc */
169: { "ye", " * " }, /* yacc-efl */
170: { "yr", " * " }, /* yacc-ratfor */
171: };
172:
173: struct rcs_kw rcs_expkw[] = {
174: { "Author", RCS_KW_AUTHOR },
175: { "Date", RCS_KW_DATE },
176: { "Header", RCS_KW_HEADER },
177: { "Id", RCS_KW_ID },
178: { "Log", RCS_KW_LOG },
179: { "Name", RCS_KW_NAME },
180: { "RCSfile", RCS_KW_RCSFILE },
181: { "Revision", RCS_KW_REVISION },
182: { "Source", RCS_KW_SOURCE },
183: { "State", RCS_KW_STATE },
184: };
185:
186: #define NB_COMTYPES (sizeof(rcs_comments)/sizeof(rcs_comments[0]))
187:
188: static struct rcs_key {
189: char rk_str[16];
190: int rk_id;
191: int rk_val;
192: int rk_flags;
193: } rcs_keys[] = {
194: { "access", RCS_TOK_ACCESS, RCS_TOK_ID, RCS_VOPT },
195: { "author", RCS_TOK_AUTHOR, RCS_TOK_ID, 0 },
196: { "branch", RCS_TOK_BRANCH, RCS_TOK_NUM, RCS_VOPT },
197: { "branches", RCS_TOK_BRANCHES, RCS_TOK_NUM, RCS_VOPT },
198: { "comment", RCS_TOK_COMMENT, RCS_TOK_STRING, RCS_VOPT },
1.43 sturm 199: { "commitid", RCS_TOK_COMMITID, RCS_TOK_ID, 0 },
1.1 joris 200: { "date", RCS_TOK_DATE, RCS_TOK_NUM, 0 },
201: { "desc", RCS_TOK_DESC, RCS_TOK_STRING, RCS_NOSCOL },
202: { "expand", RCS_TOK_EXPAND, RCS_TOK_STRING, RCS_VOPT },
203: { "head", RCS_TOK_HEAD, RCS_TOK_NUM, RCS_VOPT },
204: { "locks", RCS_TOK_LOCKS, RCS_TOK_ID, 0 },
205: { "log", RCS_TOK_LOG, RCS_TOK_STRING, RCS_NOSCOL },
206: { "next", RCS_TOK_NEXT, RCS_TOK_NUM, RCS_VOPT },
207: { "state", RCS_TOK_STATE, RCS_TOK_ID, RCS_VOPT },
208: { "strict", RCS_TOK_STRICT, 0, 0, },
209: { "symbols", RCS_TOK_SYMBOLS, 0, 0 },
210: { "text", RCS_TOK_TEXT, RCS_TOK_STRING, RCS_NOSCOL },
211: };
212:
213: #define RCS_NKEYS (sizeof(rcs_keys)/sizeof(rcs_keys[0]))
214:
215: static const char *rcs_errstrs[] = {
216: "No error",
217: "No such entry",
218: "Duplicate entry found",
219: "Bad RCS number",
220: "Invalid RCS symbol",
221: "Parse error",
222: };
223:
224: #define RCS_NERR (sizeof(rcs_errstrs)/sizeof(rcs_errstrs[0]))
225:
226: int rcs_errno = RCS_ERR_NOERR;
227: char *timezone_flag = NULL;
228:
229: int rcs_patch_lines(struct rcs_lines *, struct rcs_lines *);
1.9 xsa 230: static int rcs_movefile(char *, char *, mode_t, u_int);
1.1 joris 231: static void rcs_parse_init(RCSFILE *);
232: static int rcs_parse_admin(RCSFILE *);
233: static int rcs_parse_delta(RCSFILE *);
234: static void rcs_parse_deltas(RCSFILE *, RCSNUM *);
235: static int rcs_parse_deltatext(RCSFILE *);
236: static void rcs_parse_deltatexts(RCSFILE *, RCSNUM *);
237: static void rcs_parse_desc(RCSFILE *, RCSNUM *);
238:
239: static int rcs_parse_access(RCSFILE *);
240: static int rcs_parse_symbols(RCSFILE *);
241: static int rcs_parse_locks(RCSFILE *);
242: static int rcs_parse_branches(RCSFILE *, struct rcs_delta *);
243: static void rcs_freedelta(struct rcs_delta *);
244: static void rcs_freepdata(struct rcs_pdata *);
245: static int rcs_gettok(RCSFILE *);
246: static int rcs_pushtok(RCSFILE *, const char *, int);
247: static void rcs_growbuf(RCSFILE *);
248: static void rcs_strprint(const u_char *, size_t, FILE *);
249:
1.12 niallo 250: static BUF *rcs_expand_keywords(char *, struct rcs_delta *, BUF *, int);
1.1 joris 251:
252: RCSFILE *
1.3 joris 253: rcs_open(const char *path, int fd, int flags, ...)
1.1 joris 254: {
1.3 joris 255: int mode;
1.1 joris 256: mode_t fmode;
257: RCSFILE *rfp;
258: va_list vap;
259: struct rcs_delta *rdp;
260: struct rcs_lock *lkr;
261:
262: fmode = S_IRUSR|S_IRGRP|S_IROTH;
263: flags &= 0xffff; /* ditch any internal flags */
264:
1.3 joris 265: if (flags & RCS_CREATE) {
266: va_start(vap, flags);
267: mode = va_arg(vap, int);
268: va_end(vap);
269: fmode = (mode_t)mode;
1.1 joris 270: }
271:
272: rfp = xcalloc(1, sizeof(*rfp));
273:
274: rfp->rf_path = xstrdup(path);
275: rfp->rf_flags = flags | RCS_SLOCK | RCS_SYNCED;
276: rfp->rf_mode = fmode;
1.10 ray 277: rfp->rf_fd = fd;
1.1 joris 278:
279: TAILQ_INIT(&(rfp->rf_delta));
280: TAILQ_INIT(&(rfp->rf_access));
281: TAILQ_INIT(&(rfp->rf_symbols));
282: TAILQ_INIT(&(rfp->rf_locks));
283:
1.11 ray 284: if (!(rfp->rf_flags & RCS_CREATE)) {
1.1 joris 285: rcs_parse_init(rfp);
286:
1.11 ray 287: /* fill in rd_locker */
288: TAILQ_FOREACH(lkr, &(rfp->rf_locks), rl_list) {
289: if ((rdp = rcs_findrev(rfp, lkr->rl_num)) == NULL) {
290: rcs_close(rfp);
291: return (NULL);
292: }
293:
294: rdp->rd_locker = xstrdup(lkr->rl_name);
1.1 joris 295: }
296: }
297:
298: return (rfp);
299: }
300:
301: /*
302: * rcs_close()
303: *
304: * Close an RCS file handle.
305: */
306: void
307: rcs_close(RCSFILE *rfp)
308: {
309: struct rcs_delta *rdp;
310: struct rcs_access *rap;
311: struct rcs_lock *rlp;
312: struct rcs_sym *rsp;
313:
314: if ((rfp->rf_flags & RCS_WRITE) && !(rfp->rf_flags & RCS_SYNCED))
315: rcs_write(rfp);
316:
317: while (!TAILQ_EMPTY(&(rfp->rf_delta))) {
318: rdp = TAILQ_FIRST(&(rfp->rf_delta));
319: TAILQ_REMOVE(&(rfp->rf_delta), rdp, rd_list);
320: rcs_freedelta(rdp);
321: }
322:
323: while (!TAILQ_EMPTY(&(rfp->rf_access))) {
324: rap = TAILQ_FIRST(&(rfp->rf_access));
325: TAILQ_REMOVE(&(rfp->rf_access), rap, ra_list);
326: xfree(rap->ra_name);
327: xfree(rap);
328: }
329:
330: while (!TAILQ_EMPTY(&(rfp->rf_symbols))) {
331: rsp = TAILQ_FIRST(&(rfp->rf_symbols));
332: TAILQ_REMOVE(&(rfp->rf_symbols), rsp, rs_list);
333: rcsnum_free(rsp->rs_num);
334: xfree(rsp->rs_name);
335: xfree(rsp);
336: }
337:
338: while (!TAILQ_EMPTY(&(rfp->rf_locks))) {
339: rlp = TAILQ_FIRST(&(rfp->rf_locks));
340: TAILQ_REMOVE(&(rfp->rf_locks), rlp, rl_list);
341: rcsnum_free(rlp->rl_num);
342: xfree(rlp->rl_name);
343: xfree(rlp);
344: }
345:
346: if (rfp->rf_head != NULL)
347: rcsnum_free(rfp->rf_head);
348: if (rfp->rf_branch != NULL)
349: rcsnum_free(rfp->rf_branch);
350:
351: if (rfp->rf_path != NULL)
352: xfree(rfp->rf_path);
353: if (rfp->rf_comment != NULL)
354: xfree(rfp->rf_comment);
355: if (rfp->rf_expand != NULL)
356: xfree(rfp->rf_expand);
357: if (rfp->rf_desc != NULL)
358: xfree(rfp->rf_desc);
359: if (rfp->rf_pdata != NULL)
360: rcs_freepdata(rfp->rf_pdata);
361: xfree(rfp);
362: }
363:
364: /*
365: * rcs_write()
366: *
367: * Write the contents of the RCS file handle <rfp> to disk in the file whose
368: * path is in <rf_path>.
369: */
1.9 xsa 370: void
1.1 joris 371: rcs_write(RCSFILE *rfp)
372: {
373: FILE *fp;
1.40 xsa 374: char numbuf[RCS_REV_BUFSZ], *fn;
1.1 joris 375: struct rcs_access *ap;
376: struct rcs_sym *symp;
377: struct rcs_branch *brp;
378: struct rcs_delta *rdp;
379: struct rcs_lock *lkp;
380: size_t len;
1.27 deraadt 381: int fd;
1.1 joris 382:
1.17 niallo 383: fn = NULL;
1.27 deraadt 384: fd = -1;
1.1 joris 385:
386: if (rfp->rf_flags & RCS_SYNCED)
1.9 xsa 387: return;
1.1 joris 388:
389: /* Write operations need the whole file parsed */
390: rcs_parse_deltatexts(rfp, NULL);
391:
1.7 xsa 392: (void)xasprintf(&fn, "%s/rcs.XXXXXXXXXX", rcs_tmpdir);
393:
1.1 joris 394: if ((fd = mkstemp(fn)) == -1)
1.2 xsa 395: err(1, "%s", fn);
1.1 joris 396:
397: if ((fp = fdopen(fd, "w+")) == NULL) {
1.5 ray 398: int saved_errno;
399:
400: saved_errno = errno;
1.2 xsa 401: (void)unlink(fn);
1.5 ray 402: errno = saved_errno;
1.2 xsa 403: err(1, "%s", fn);
1.1 joris 404: }
405:
406: if (rfp->rf_head != NULL)
407: rcsnum_tostr(rfp->rf_head, numbuf, sizeof(numbuf));
408: else
409: numbuf[0] = '\0';
410:
411: fprintf(fp, "head\t%s;\n", numbuf);
412:
413: if (rfp->rf_branch != NULL) {
414: rcsnum_tostr(rfp->rf_branch, numbuf, sizeof(numbuf));
415: fprintf(fp, "branch\t%s;\n", numbuf);
416: }
417:
418: fputs("access", fp);
419: TAILQ_FOREACH(ap, &(rfp->rf_access), ra_list) {
420: fprintf(fp, "\n\t%s", ap->ra_name);
421: }
422: fputs(";\n", fp);
423:
424: fprintf(fp, "symbols");
425: TAILQ_FOREACH(symp, &(rfp->rf_symbols), rs_list) {
426: rcsnum_tostr(symp->rs_num, numbuf, sizeof(numbuf));
1.30 ray 427: fprintf(fp, "\n\t%s:%s", symp->rs_name, numbuf);
1.1 joris 428: }
429: fprintf(fp, ";\n");
430:
431: fprintf(fp, "locks");
432: TAILQ_FOREACH(lkp, &(rfp->rf_locks), rl_list) {
433: rcsnum_tostr(lkp->rl_num, numbuf, sizeof(numbuf));
434: fprintf(fp, "\n\t%s:%s", lkp->rl_name, numbuf);
435: }
436:
437: fprintf(fp, ";");
438:
439: if (rfp->rf_flags & RCS_SLOCK)
440: fprintf(fp, " strict;");
441: fputc('\n', fp);
442:
443: fputs("comment\t@", fp);
444: if (rfp->rf_comment != NULL) {
445: rcs_strprint((const u_char *)rfp->rf_comment,
446: strlen(rfp->rf_comment), fp);
447: fputs("@;\n", fp);
448: } else
449: fputs("# @;\n", fp);
450:
451: if (rfp->rf_expand != NULL) {
452: fputs("expand @", fp);
453: rcs_strprint((const u_char *)rfp->rf_expand,
454: strlen(rfp->rf_expand), fp);
455: fputs("@;\n", fp);
456: }
457:
458: fputs("\n\n", fp);
459:
460: TAILQ_FOREACH(rdp, &(rfp->rf_delta), rd_list) {
461: fprintf(fp, "%s\n", rcsnum_tostr(rdp->rd_num, numbuf,
462: sizeof(numbuf)));
463: fprintf(fp, "date\t%d.%02d.%02d.%02d.%02d.%02d;",
464: rdp->rd_date.tm_year + 1900, rdp->rd_date.tm_mon + 1,
465: rdp->rd_date.tm_mday, rdp->rd_date.tm_hour,
466: rdp->rd_date.tm_min, rdp->rd_date.tm_sec);
467: fprintf(fp, "\tauthor %s;\tstate %s;\n",
468: rdp->rd_author, rdp->rd_state);
469: fputs("branches", fp);
470: TAILQ_FOREACH(brp, &(rdp->rd_branches), rb_list) {
1.44 ! tobias 471: fprintf(fp, "\n\t%s", rcsnum_tostr(brp->rb_num, numbuf,
1.1 joris 472: sizeof(numbuf)));
473: }
474: fputs(";\n", fp);
475: fprintf(fp, "next\t%s;\n\n", rcsnum_tostr(rdp->rd_next,
476: numbuf, sizeof(numbuf)));
477: }
478:
479: fputs("\ndesc\n@", fp);
480: if (rfp->rf_desc != NULL && (len = strlen(rfp->rf_desc)) > 0) {
481: rcs_strprint((const u_char *)rfp->rf_desc, len, fp);
482: if (rfp->rf_desc[len-1] != '\n')
483: fputc('\n', fp);
484: }
485: fputs("@\n", fp);
486:
487: /* deltatexts */
488: TAILQ_FOREACH(rdp, &(rfp->rf_delta), rd_list) {
489: fprintf(fp, "\n\n%s\n", rcsnum_tostr(rdp->rd_num, numbuf,
490: sizeof(numbuf)));
491: fputs("log\n@", fp);
492: if (rdp->rd_log != NULL) {
493: len = strlen(rdp->rd_log);
494: rcs_strprint((const u_char *)rdp->rd_log, len, fp);
495: if (rdp->rd_log[len-1] != '\n')
496: fputc('\n', fp);
497: }
498: fputs("@\ntext\n@", fp);
1.35 niallo 499: if (rdp->rd_text != NULL)
1.1 joris 500: rcs_strprint(rdp->rd_text, rdp->rd_tlen, fp);
501: fputs("@\n", fp);
502: }
1.9 xsa 503: (void)fclose(fp);
1.1 joris 504:
1.9 xsa 505: if (rcs_movefile(fn, rfp->rf_path, rfp->rf_mode, rfp->rf_flags) == -1) {
506: (void)unlink(fn);
507: errx(1, "rcs_movefile failed");
508: }
1.1 joris 509:
1.9 xsa 510: rfp->rf_flags |= RCS_SYNCED;
1.1 joris 511:
1.9 xsa 512: if (fn != NULL)
513: xfree(fn);
514: }
1.1 joris 515:
1.9 xsa 516: /*
517: * rcs_movefile()
518: *
519: * Move a file using rename(2) if possible and copying if not.
520: * Returns 0 on success, -1 on failure.
521: */
522: static int
523: rcs_movefile(char *from, char *to, mode_t perm, u_int to_flags)
524: {
525: FILE *src, *dst;
526: size_t nread, nwritten;
527: char *buf;
528: int ret;
1.1 joris 529:
1.9 xsa 530: ret = -1;
1.1 joris 531:
1.9 xsa 532: if (rename(from, to) == 0) {
533: if (chmod(to, perm) == -1) {
534: warn("%s", to);
535: return (-1);
1.1 joris 536: }
1.9 xsa 537: return (0);
538: } else if (errno != EXDEV) {
539: warn("failed to access temp RCS output file");
540: return (-1);
1.1 joris 541: }
542:
1.9 xsa 543: if ((chmod(to, S_IWUSR) == -1) && !(to_flags & RCS_CREATE)) {
544: warnx("chmod(%s, 0%o) failed", to, S_IWUSR);
545: return (-1);
1.1 joris 546: }
547:
1.9 xsa 548: /* different filesystem, have to copy the file */
549: if ((src = fopen(from, "r")) == NULL) {
550: warn("%s", from);
551: return (-1);
552: }
553: if ((dst = fopen(to, "w")) == NULL) {
554: warn("%s", to);
555: return (-1);
556: }
557: if (fchmod(fileno(dst), perm)) {
558: warn("%s", to);
559: (void)unlink(to);
560: return (-1);
561: }
562:
563: buf = xmalloc(MAXBSIZE);
564: while ((nread = fread(buf, sizeof(char), MAXBSIZE, src)) != 0) {
565: if (ferror(src)) {
566: warnx("failed to read `%s'", from);
567: (void)unlink(to);
568: goto out;
569: }
570: nwritten = fwrite(buf, sizeof(char), nread, dst);
571: if (nwritten != nread) {
572: warnx("failed to write `%s'", to);
573: (void)unlink(to);
574: goto out;
575: }
576: }
1.1 joris 577:
1.7 xsa 578: ret = 0;
1.9 xsa 579:
580: (void)fclose(src);
581: (void)fclose(dst);
582: (void)unlink(from);
583:
1.7 xsa 584: out:
1.9 xsa 585: xfree(buf);
1.7 xsa 586:
587: return (ret);
1.1 joris 588: }
589:
590: /*
591: * rcs_head_get()
592: *
593: * Retrieve the revision number of the head revision for the RCS file <file>.
594: */
595: const RCSNUM *
596: rcs_head_get(RCSFILE *file)
597: {
598: return (file->rf_head);
599: }
600:
601: /*
602: * rcs_head_set()
603: *
604: * Set the revision number of the head revision for the RCS file <file> to
605: * <rev>, which must reference a valid revision within the file.
606: */
607: int
608: rcs_head_set(RCSFILE *file, RCSNUM *rev)
609: {
610: if (rcs_findrev(file, rev) == NULL)
611: return (-1);
612:
613: if (file->rf_head == NULL)
614: file->rf_head = rcsnum_alloc();
615:
616: rcsnum_cpy(rev, file->rf_head, 0);
617: file->rf_flags &= ~RCS_SYNCED;
618: return (0);
619: }
620:
621:
622: /*
623: * rcs_branch_get()
624: *
625: * Retrieve the default branch number for the RCS file <file>.
626: * Returns the number on success. If NULL is returned, then there is no
627: * default branch for this file.
628: */
629: const RCSNUM *
630: rcs_branch_get(RCSFILE *file)
631: {
632: return (file->rf_branch);
633: }
634:
635: /*
636: * rcs_branch_set()
637: *
638: * Set the default branch for the RCS file <file> to <bnum>.
639: * Returns 0 on success, -1 on failure.
640: */
641: int
642: rcs_branch_set(RCSFILE *file, const RCSNUM *bnum)
643: {
644: if (file->rf_branch == NULL)
645: file->rf_branch = rcsnum_alloc();
646:
647: rcsnum_cpy(bnum, file->rf_branch, 0);
648: file->rf_flags &= ~RCS_SYNCED;
649: return (0);
650: }
651:
652: /*
653: * rcs_access_add()
654: *
655: * Add the login name <login> to the access list for the RCS file <file>.
656: * Returns 0 on success, or -1 on failure.
657: */
658: int
659: rcs_access_add(RCSFILE *file, const char *login)
660: {
661: struct rcs_access *ap;
662:
663: /* first look for duplication */
664: TAILQ_FOREACH(ap, &(file->rf_access), ra_list) {
665: if (strcmp(ap->ra_name, login) == 0) {
666: rcs_errno = RCS_ERR_DUPENT;
667: return (-1);
668: }
669: }
670:
671: ap = xmalloc(sizeof(*ap));
672: ap->ra_name = xstrdup(login);
673: TAILQ_INSERT_TAIL(&(file->rf_access), ap, ra_list);
674:
675: /* not synced anymore */
676: file->rf_flags &= ~RCS_SYNCED;
677: return (0);
678: }
679:
680: /*
681: * rcs_access_remove()
682: *
683: * Remove an entry with login name <login> from the access list of the RCS
684: * file <file>.
685: * Returns 0 on success, or -1 on failure.
686: */
687: int
688: rcs_access_remove(RCSFILE *file, const char *login)
689: {
690: struct rcs_access *ap;
691:
692: TAILQ_FOREACH(ap, &(file->rf_access), ra_list)
693: if (strcmp(ap->ra_name, login) == 0)
694: break;
695:
696: if (ap == NULL) {
697: rcs_errno = RCS_ERR_NOENT;
698: return (-1);
699: }
700:
701: TAILQ_REMOVE(&(file->rf_access), ap, ra_list);
702: xfree(ap->ra_name);
703: xfree(ap);
704:
705: /* not synced anymore */
706: file->rf_flags &= ~RCS_SYNCED;
707: return (0);
708: }
709:
710: /*
711: * rcs_sym_add()
712: *
713: * Add a symbol to the list of symbols for the RCS file <rfp>. The new symbol
714: * is named <sym> and is bound to the RCS revision <snum>.
715: * Returns 0 on success, or -1 on failure.
716: */
717: int
718: rcs_sym_add(RCSFILE *rfp, const char *sym, RCSNUM *snum)
719: {
720: struct rcs_sym *symp;
721:
722: if (!rcs_sym_check(sym)) {
723: rcs_errno = RCS_ERR_BADSYM;
724: return (-1);
725: }
726:
727: /* first look for duplication */
728: TAILQ_FOREACH(symp, &(rfp->rf_symbols), rs_list) {
729: if (strcmp(symp->rs_name, sym) == 0) {
730: rcs_errno = RCS_ERR_DUPENT;
731: return (-1);
732: }
733: }
734:
735: symp = xmalloc(sizeof(*symp));
736: symp->rs_name = xstrdup(sym);
737: symp->rs_num = rcsnum_alloc();
738: rcsnum_cpy(snum, symp->rs_num, 0);
739:
740: TAILQ_INSERT_HEAD(&(rfp->rf_symbols), symp, rs_list);
741:
742: /* not synced anymore */
743: rfp->rf_flags &= ~RCS_SYNCED;
744: return (0);
745: }
746:
747: /*
748: * rcs_sym_remove()
749: *
750: * Remove the symbol with name <sym> from the symbol list for the RCS file
751: * <file>. If no such symbol is found, the call fails and returns with an
752: * error.
753: * Returns 0 on success, or -1 on failure.
754: */
755: int
756: rcs_sym_remove(RCSFILE *file, const char *sym)
757: {
758: struct rcs_sym *symp;
759:
760: if (!rcs_sym_check(sym)) {
761: rcs_errno = RCS_ERR_BADSYM;
762: return (-1);
763: }
764:
765: TAILQ_FOREACH(symp, &(file->rf_symbols), rs_list)
766: if (strcmp(symp->rs_name, sym) == 0)
767: break;
768:
769: if (symp == NULL) {
770: rcs_errno = RCS_ERR_NOENT;
771: return (-1);
772: }
773:
774: TAILQ_REMOVE(&(file->rf_symbols), symp, rs_list);
775: xfree(symp->rs_name);
776: rcsnum_free(symp->rs_num);
777: xfree(symp);
778:
779: /* not synced anymore */
780: file->rf_flags &= ~RCS_SYNCED;
781: return (0);
782: }
783:
784: /*
785: * rcs_sym_getrev()
786: *
787: * Retrieve the RCS revision number associated with the symbol <sym> for the
788: * RCS file <file>. The returned value is a dynamically-allocated copy and
789: * should be freed by the caller once they are done with it.
790: * Returns the RCSNUM on success, or NULL on failure.
791: */
792: RCSNUM *
793: rcs_sym_getrev(RCSFILE *file, const char *sym)
794: {
795: RCSNUM *num;
796: struct rcs_sym *symp;
797:
798: if (!rcs_sym_check(sym)) {
799: rcs_errno = RCS_ERR_BADSYM;
800: return (NULL);
801: }
802:
803: num = NULL;
804: TAILQ_FOREACH(symp, &(file->rf_symbols), rs_list)
805: if (strcmp(symp->rs_name, sym) == 0)
806: break;
807:
808: if (symp == NULL) {
809: rcs_errno = RCS_ERR_NOENT;
810: } else {
811: num = rcsnum_alloc();
812: rcsnum_cpy(symp->rs_num, num, 0);
813: }
814:
815: return (num);
816: }
817:
818: /*
819: * rcs_sym_check()
820: *
821: * Check the RCS symbol name <sym> for any unsupported characters.
822: * Returns 1 if the tag is correct, 0 if it isn't valid.
823: */
824: int
825: rcs_sym_check(const char *sym)
826: {
827: int ret;
828: const char *cp;
829:
830: ret = 1;
831: cp = sym;
832: if (!isalpha(*cp++))
833: return (0);
834:
835: for (; *cp != '\0'; cp++)
836: if (!isgraph(*cp) || (strchr(rcs_sym_invch, *cp) != NULL)) {
837: ret = 0;
838: break;
839: }
840:
841: return (ret);
842: }
843:
844: /*
845: * rcs_lock_getmode()
846: *
847: * Retrieve the locking mode of the RCS file <file>.
848: */
849: int
850: rcs_lock_getmode(RCSFILE *file)
851: {
852: return (file->rf_flags & RCS_SLOCK) ? RCS_LOCK_STRICT : RCS_LOCK_LOOSE;
853: }
854:
855: /*
856: * rcs_lock_setmode()
857: *
858: * Set the locking mode of the RCS file <file> to <mode>, which must either
859: * be RCS_LOCK_LOOSE or RCS_LOCK_STRICT.
860: * Returns the previous mode on success, or -1 on failure.
861: */
862: int
863: rcs_lock_setmode(RCSFILE *file, int mode)
864: {
865: int pmode;
866: pmode = rcs_lock_getmode(file);
867:
868: if (mode == RCS_LOCK_STRICT)
869: file->rf_flags |= RCS_SLOCK;
870: else if (mode == RCS_LOCK_LOOSE)
871: file->rf_flags &= ~RCS_SLOCK;
872: else
873: errx(1, "rcs_lock_setmode: invalid mode `%d'", mode);
874:
875: file->rf_flags &= ~RCS_SYNCED;
876: return (pmode);
877: }
878:
879: /*
880: * rcs_lock_add()
881: *
882: * Add an RCS lock for the user <user> on revision <rev>.
883: * Returns 0 on success, or -1 on failure.
884: */
885: int
886: rcs_lock_add(RCSFILE *file, const char *user, RCSNUM *rev)
887: {
888: struct rcs_lock *lkp;
889:
890: /* first look for duplication */
891: TAILQ_FOREACH(lkp, &(file->rf_locks), rl_list) {
892: if (strcmp(lkp->rl_name, user) == 0 &&
893: rcsnum_cmp(rev, lkp->rl_num, 0) == 0) {
894: rcs_errno = RCS_ERR_DUPENT;
895: return (-1);
896: }
897: }
898:
899: lkp = xmalloc(sizeof(*lkp));
900: lkp->rl_name = xstrdup(user);
901: lkp->rl_num = rcsnum_alloc();
902: rcsnum_cpy(rev, lkp->rl_num, 0);
903:
904: TAILQ_INSERT_TAIL(&(file->rf_locks), lkp, rl_list);
905:
906: /* not synced anymore */
907: file->rf_flags &= ~RCS_SYNCED;
908: return (0);
909: }
910:
911:
912: /*
913: * rcs_lock_remove()
914: *
915: * Remove the RCS lock on revision <rev>.
916: * Returns 0 on success, or -1 on failure.
917: */
918: int
919: rcs_lock_remove(RCSFILE *file, const char *user, RCSNUM *rev)
920: {
921: struct rcs_lock *lkp;
922:
923: TAILQ_FOREACH(lkp, &(file->rf_locks), rl_list) {
924: if (strcmp(lkp->rl_name, user) == 0 &&
925: rcsnum_cmp(lkp->rl_num, rev, 0) == 0)
926: break;
927: }
928:
929: if (lkp == NULL) {
930: rcs_errno = RCS_ERR_NOENT;
931: return (-1);
932: }
933:
934: TAILQ_REMOVE(&(file->rf_locks), lkp, rl_list);
935: rcsnum_free(lkp->rl_num);
936: xfree(lkp->rl_name);
937: xfree(lkp);
938:
939: /* not synced anymore */
940: file->rf_flags &= ~RCS_SYNCED;
941: return (0);
942: }
943:
944: /*
945: * rcs_desc_get()
946: *
947: * Retrieve the description for the RCS file <file>.
948: */
949: const char *
950: rcs_desc_get(RCSFILE *file)
951: {
952: return (file->rf_desc);
953: }
954:
955: /*
956: * rcs_desc_set()
957: *
958: * Set the description for the RCS file <file>.
959: */
960: void
961: rcs_desc_set(RCSFILE *file, const char *desc)
962: {
963: char *tmp;
964:
965: tmp = xstrdup(desc);
966: if (file->rf_desc != NULL)
967: xfree(file->rf_desc);
968: file->rf_desc = tmp;
969: file->rf_flags &= ~RCS_SYNCED;
970: }
971:
972: /*
973: * rcs_comment_lookup()
974: *
975: * Lookup the assumed comment leader based on a file's suffix.
976: * Returns a pointer to the string on success, or NULL on failure.
977: */
978: const char *
979: rcs_comment_lookup(const char *filename)
980: {
981: int i;
982: const char *sp;
983:
984: if ((sp = strrchr(filename, '.')) == NULL) {
985: rcs_errno = RCS_ERR_NOENT;
986: return (NULL);
987: }
988: sp++;
989:
990: for (i = 0; i < (int)NB_COMTYPES; i++)
991: if (strcmp(rcs_comments[i].rc_suffix, sp) == 0)
992: return (rcs_comments[i].rc_cstr);
993: return (NULL);
994: }
995:
996: /*
997: * rcs_comment_get()
998: *
999: * Retrieve the comment leader for the RCS file <file>.
1000: */
1001: const char *
1002: rcs_comment_get(RCSFILE *file)
1003: {
1004: return (file->rf_comment);
1005: }
1006:
1007: /*
1008: * rcs_comment_set()
1009: *
1010: * Set the comment leader for the RCS file <file>.
1011: */
1012: void
1013: rcs_comment_set(RCSFILE *file, const char *comment)
1014: {
1015: char *tmp;
1016:
1017: tmp = xstrdup(comment);
1018: if (file->rf_comment != NULL)
1019: xfree(file->rf_comment);
1020: file->rf_comment = tmp;
1021: file->rf_flags &= ~RCS_SYNCED;
1022: }
1023:
1024: /*
1025: * rcs_tag_resolve()
1026: *
1027: * Retrieve the revision number corresponding to the tag <tag> for the RCS
1028: * file <file>.
1029: */
1030: RCSNUM *
1031: rcs_tag_resolve(RCSFILE *file, const char *tag)
1032: {
1033: RCSNUM *num;
1034:
1035: if ((num = rcsnum_parse(tag)) == NULL) {
1036: num = rcs_sym_getrev(file, tag);
1037: }
1038:
1039: return (num);
1040: }
1041:
1042: int
1043: rcs_patch_lines(struct rcs_lines *dlines, struct rcs_lines *plines)
1044: {
1045: char op, *ep;
1046: struct rcs_line *lp, *dlp, *ndlp;
1047: int i, lineno, nbln;
1.35 niallo 1048: u_char tmp;
1.1 joris 1049:
1050: dlp = TAILQ_FIRST(&(dlines->l_lines));
1051: lp = TAILQ_FIRST(&(plines->l_lines));
1052:
1053: /* skip first bogus line */
1054: for (lp = TAILQ_NEXT(lp, l_list); lp != NULL;
1055: lp = TAILQ_NEXT(lp, l_list)) {
1.35 niallo 1056: if (lp->l_len < 2)
1057: errx(1, "line too short, RCS patch seems broken");
1.1 joris 1058: op = *(lp->l_line);
1.35 niallo 1059: /* NUL-terminate line buffer for strtol() safety. */
1060: tmp = lp->l_line[lp->l_len - 1];
1061: lp->l_line[lp->l_len - 1] = '\0';
1.1 joris 1062: lineno = (int)strtol((lp->l_line + 1), &ep, 10);
1063: if (lineno > dlines->l_nblines || lineno < 0 ||
1064: *ep != ' ')
1065: errx(1, "invalid line specification in RCS patch");
1066: ep++;
1067: nbln = (int)strtol(ep, &ep, 10);
1.35 niallo 1068: /* Restore the last byte of the buffer */
1069: lp->l_line[lp->l_len - 1] = tmp;
1070: if (nbln < 0)
1.1 joris 1071: errx(1,
1072: "invalid line number specification in RCS patch");
1073:
1074: /* find the appropriate line */
1075: for (;;) {
1076: if (dlp == NULL)
1077: break;
1078: if (dlp->l_lineno == lineno)
1079: break;
1080: if (dlp->l_lineno > lineno) {
1081: dlp = TAILQ_PREV(dlp, rcs_tqh, l_list);
1082: } else if (dlp->l_lineno < lineno) {
1083: if (((ndlp = TAILQ_NEXT(dlp, l_list)) == NULL) ||
1084: ndlp->l_lineno > lineno)
1085: break;
1086: dlp = ndlp;
1087: }
1088: }
1089: if (dlp == NULL)
1090: errx(1, "can't find referenced line in RCS patch");
1091:
1092: if (op == 'd') {
1093: for (i = 0; (i < nbln) && (dlp != NULL); i++) {
1094: ndlp = TAILQ_NEXT(dlp, l_list);
1095: TAILQ_REMOVE(&(dlines->l_lines), dlp, l_list);
1.21 niallo 1096: xfree(dlp);
1.1 joris 1097: dlp = ndlp;
1098: /* last line is gone - reset dlp */
1099: if (dlp == NULL) {
1100: ndlp = TAILQ_LAST(&(dlines->l_lines),
1101: rcs_tqh);
1102: dlp = ndlp;
1103: }
1104: }
1105: } else if (op == 'a') {
1106: for (i = 0; i < nbln; i++) {
1107: ndlp = lp;
1108: lp = TAILQ_NEXT(lp, l_list);
1109: if (lp == NULL)
1110: errx(1, "truncated RCS patch");
1111: TAILQ_REMOVE(&(plines->l_lines), lp, l_list);
1112: TAILQ_INSERT_AFTER(&(dlines->l_lines), dlp,
1113: lp, l_list);
1114: dlp = lp;
1115:
1116: /* we don't want lookup to block on those */
1117: lp->l_lineno = lineno;
1118:
1119: lp = ndlp;
1120: }
1121: } else
1122: errx(1, "unknown RCS patch operation `%c'", op);
1123:
1124: /* last line of the patch, done */
1125: if (lp->l_lineno == plines->l_nblines)
1126: break;
1127: }
1128:
1129: /* once we're done patching, rebuild the line numbers */
1130: lineno = 0;
1131: TAILQ_FOREACH(lp, &(dlines->l_lines), l_list)
1132: lp->l_lineno = lineno++;
1133: dlines->l_nblines = lineno - 1;
1134:
1135: return (0);
1136: }
1137:
1138: /*
1139: * rcs_getrev()
1140: *
1141: * Get the whole contents of revision <rev> from the RCSFILE <rfp>. The
1142: * returned buffer is dynamically allocated and should be released using
1143: * rcs_buf_free() once the caller is done using it.
1144: */
1145: BUF*
1146: rcs_getrev(RCSFILE *rfp, RCSNUM *frev)
1147: {
1148: u_int i, numlen;
1.6 niallo 1149: int isbranch, lookonbranch, found;
1.35 niallo 1150: size_t dlen, plen, len;
1.1 joris 1151: RCSNUM *crev, *rev, *brev;
1.35 niallo 1152: BUF *rbuf;
1.1 joris 1153: struct rcs_delta *rdp = NULL;
1154: struct rcs_branch *rb;
1.35 niallo 1155: u_char *data, *patch;
1.1 joris 1156:
1157: if (rfp->rf_head == NULL)
1158: return (NULL);
1159:
1160: if (frev == RCS_HEAD_REV)
1161: rev = rfp->rf_head;
1162: else
1163: rev = frev;
1164:
1165: /* XXX rcsnum_cmp() */
1166: for (i = 0; i < rfp->rf_head->rn_len; i++) {
1167: if (rfp->rf_head->rn_id[i] < rev->rn_id[i]) {
1168: rcs_errno = RCS_ERR_NOENT;
1169: return (NULL);
1170: }
1171: }
1172:
1173: /* No matter what, we're going to need up the the description parsed */
1174: rcs_parse_desc(rfp, NULL);
1175:
1176: rdp = rcs_findrev(rfp, rfp->rf_head);
1177: if (rdp == NULL) {
1178: warnx("failed to get RCS HEAD revision");
1179: return (NULL);
1180: }
1181:
1182: if (rdp->rd_tlen == 0)
1183: rcs_parse_deltatexts(rfp, rfp->rf_head);
1184:
1185: len = rdp->rd_tlen;
1186: if (len == 0) {
1187: rbuf = rcs_buf_alloc(1, 0);
1188: rcs_buf_empty(rbuf);
1189: return (rbuf);
1190: }
1191:
1192: rbuf = rcs_buf_alloc(len, BUF_AUTOEXT);
1193: rcs_buf_append(rbuf, rdp->rd_text, len);
1194:
1195: isbranch = 0;
1196: brev = NULL;
1197:
1198: /*
1199: * If a branch was passed, get the latest revision on it.
1200: */
1201: if (RCSNUM_ISBRANCH(rev)) {
1202: brev = rev;
1203: rdp = rcs_findrev(rfp, rev);
1204: if (rdp == NULL)
1205: return (NULL);
1206:
1207: rev = rdp->rd_num;
1208: } else {
1209: if (RCSNUM_ISBRANCHREV(rev)) {
1210: brev = rcsnum_revtobr(rev);
1211: isbranch = 1;
1212: }
1213: }
1214:
1215: lookonbranch = 0;
1216: crev = NULL;
1217:
1218: /* Apply patches backwards to get the right version.
1219: */
1220: do {
1.6 niallo 1221: found = 0;
1.26 deraadt 1222:
1.1 joris 1223: if (rcsnum_cmp(rfp->rf_head, rev, 0) == 0)
1224: break;
1225:
1226: if (isbranch == 1 && rdp->rd_num->rn_len < rev->rn_len &&
1227: !TAILQ_EMPTY(&(rdp->rd_branches)))
1228: lookonbranch = 1;
1229:
1230: if (isbranch && lookonbranch == 1) {
1231: lookonbranch = 0;
1232: TAILQ_FOREACH(rb, &(rdp->rd_branches), rb_list) {
1233: /* XXX rcsnum_cmp() is totally broken for
1234: * this purpose.
1235: */
1236: numlen = MIN(brev->rn_len, rb->rb_num->rn_len);
1237: for (i = 0; i < numlen; i++) {
1238: if (rb->rb_num->rn_id[i] !=
1239: brev->rn_id[i])
1240: break;
1241: }
1242:
1243: if (i == numlen) {
1244: crev = rb->rb_num;
1.6 niallo 1245: found = 1;
1.1 joris 1246: break;
1247: }
1248: }
1.6 niallo 1249: if (found == 0)
1250: crev = rdp->rd_next;
1.1 joris 1251: } else {
1252: crev = rdp->rd_next;
1253: }
1254:
1255: rdp = rcs_findrev(rfp, crev);
1256: if (rdp == NULL) {
1257: rcs_buf_free(rbuf);
1258: return (NULL);
1259: }
1260:
1.35 niallo 1261: plen = rdp->rd_tlen;
1262: dlen = rcs_buf_len(rbuf);
1263: patch = rdp->rd_text;
1264: data = rcs_buf_release(rbuf);
1.1 joris 1265: /* check if we have parsed this rev's deltatext */
1266: if (rdp->rd_tlen == 0)
1267: rcs_parse_deltatexts(rfp, rdp->rd_num);
1268:
1.35 niallo 1269: rbuf = rcs_patchfile(data, dlen, patch, plen, rcs_patch_lines);
1.1 joris 1270:
1271: if (rbuf == NULL)
1272: break;
1273: } while (rcsnum_cmp(crev, rev, 0) != 0);
1274:
1275: return (rbuf);
1276: }
1277:
1278: /*
1279: * rcs_rev_add()
1280: *
1281: * Add a revision to the RCS file <rf>. The new revision's number can be
1282: * specified in <rev> (which can also be RCS_HEAD_REV, in which case the
1283: * new revision will have a number equal to the previous head revision plus
1284: * one). The <msg> argument specifies the log message for that revision, and
1285: * <date> specifies the revision's date (a value of -1 is
1286: * equivalent to using the current time).
1287: * If <username> is NULL, set the author for this revision to the current user.
1288: * Otherwise, set it to <username>.
1289: * Returns 0 on success, or -1 on failure.
1290: */
1291: int
1292: rcs_rev_add(RCSFILE *rf, RCSNUM *rev, const char *msg, time_t date,
1293: const char *username)
1294: {
1295: time_t now;
1296: struct passwd *pw;
1297: struct rcs_delta *ordp, *rdp;
1298:
1299: if (rev == RCS_HEAD_REV) {
1300: if (rf->rf_flags & RCS_CREATE) {
1301: if ((rev = rcsnum_parse(RCS_HEAD_INIT)) == NULL)
1302: return (-1);
1303: rf->rf_head = rcsnum_alloc();
1304: rcsnum_cpy(rev, rf->rf_head, 0);
1305: } else {
1306: rev = rcsnum_inc(rf->rf_head);
1307: }
1308: } else {
1309: if ((rdp = rcs_findrev(rf, rev)) != NULL) {
1310: rcs_errno = RCS_ERR_DUPENT;
1311: return (-1);
1312: }
1313: }
1314:
1315: if ((pw = getpwuid(getuid())) == NULL)
1316: errx(1, "getpwuid failed");
1317:
1318: rdp = xcalloc(1, sizeof(*rdp));
1319:
1320: TAILQ_INIT(&(rdp->rd_branches));
1321:
1322: rdp->rd_num = rcsnum_alloc();
1323: rcsnum_cpy(rev, rdp->rd_num, 0);
1324:
1325: rdp->rd_next = rcsnum_alloc();
1326:
1327: if (!(rf->rf_flags & RCS_CREATE)) {
1328: /* next should point to the previous HEAD */
1329: ordp = TAILQ_FIRST(&(rf->rf_delta));
1330: rcsnum_cpy(ordp->rd_num, rdp->rd_next, 0);
1331: }
1332:
1333:
1334: if (username == NULL)
1335: username = pw->pw_name;
1336:
1337: rdp->rd_author = xstrdup(username);
1338: rdp->rd_state = xstrdup(RCS_STATE_EXP);
1339: rdp->rd_log = xstrdup(msg);
1340:
1341: if (date != (time_t)(-1))
1342: now = date;
1343: else
1344: time(&now);
1345: gmtime_r(&now, &(rdp->rd_date));
1346:
1347: TAILQ_INSERT_HEAD(&(rf->rf_delta), rdp, rd_list);
1348: rf->rf_ndelta++;
1349:
1350: /* not synced anymore */
1351: rf->rf_flags &= ~RCS_SYNCED;
1352:
1353: return (0);
1354: }
1355:
1356: /*
1357: * rcs_rev_remove()
1358: *
1359: * Remove the revision whose number is <rev> from the RCS file <rf>.
1360: */
1361: int
1362: rcs_rev_remove(RCSFILE *rf, RCSNUM *rev)
1363: {
1.12 niallo 1364: char *path_tmp1, *path_tmp2;
1.1 joris 1365: struct rcs_delta *rdp, *prevrdp, *nextrdp;
1.12 niallo 1366: BUF *newdeltatext, *nextbuf, *prevbuf, *newdiff;
1367:
1368: nextrdp = prevrdp = NULL;
1.17 niallo 1369: path_tmp1 = path_tmp2 = NULL;
1.1 joris 1370:
1371: if (rev == RCS_HEAD_REV)
1372: rev = rf->rf_head;
1373:
1374: /* do we actually have that revision? */
1375: if ((rdp = rcs_findrev(rf, rev)) == NULL) {
1376: rcs_errno = RCS_ERR_NOENT;
1377: return (-1);
1378: }
1379:
1380: /*
1381: * This is confusing, the previous delta is next in the TAILQ list.
1382: * the next delta is the previous one in the TAILQ list.
1383: *
1384: * When the HEAD revision got specified, nextrdp will be NULL.
1385: * When the first revision got specified, prevrdp will be NULL.
1386: */
1387: prevrdp = (struct rcs_delta *)TAILQ_NEXT(rdp, rd_list);
1388: nextrdp = (struct rcs_delta *)TAILQ_PREV(rdp, rcs_tqh, rd_list);
1389:
1.12 niallo 1390: newdeltatext = prevbuf = nextbuf = NULL;
1.1 joris 1391:
1392: if (prevrdp != NULL) {
1393: if ((prevbuf = rcs_getrev(rf, prevrdp->rd_num)) == NULL)
1394: errx(1, "error getting revision");
1395: }
1396:
1397: if (prevrdp != NULL && nextrdp != NULL) {
1398: if ((nextbuf = rcs_getrev(rf, nextrdp->rd_num)) == NULL)
1399: errx(1, "error getting revision");
1400:
1401: newdiff = rcs_buf_alloc(64, BUF_AUTOEXT);
1402:
1403: /* calculate new diff */
1.7 xsa 1404: (void)xasprintf(&path_tmp1, "%s/diff1.XXXXXXXXXX", rcs_tmpdir);
1.22 ray 1405: rcs_buf_write_stmp(nextbuf, path_tmp1);
1.1 joris 1406: rcs_buf_free(nextbuf);
1407:
1.7 xsa 1408: (void)xasprintf(&path_tmp2, "%s/diff2.XXXXXXXXXX", rcs_tmpdir);
1.22 ray 1409: rcs_buf_write_stmp(prevbuf, path_tmp2);
1.1 joris 1410: rcs_buf_free(prevbuf);
1411:
1412: diff_format = D_RCSDIFF;
1.41 ray 1413: if (diffreg(path_tmp1, path_tmp2, newdiff, 0) == D_ERROR)
1414: errx(1, "diffreg failed");
1.1 joris 1415:
1.12 niallo 1416: newdeltatext = newdiff;
1.1 joris 1417: } else if (nextrdp == NULL && prevrdp != NULL) {
1.12 niallo 1418: newdeltatext = prevbuf;
1.1 joris 1419: }
1420:
1421: if (newdeltatext != NULL) {
1422: if (rcs_deltatext_set(rf, prevrdp->rd_num, newdeltatext) < 0)
1423: errx(1, "error setting new deltatext");
1424: }
1425:
1426: TAILQ_REMOVE(&(rf->rf_delta), rdp, rd_list);
1427:
1428: /* update pointers */
1429: if (prevrdp != NULL && nextrdp != NULL) {
1430: rcsnum_cpy(prevrdp->rd_num, nextrdp->rd_next, 0);
1431: } else if (prevrdp != NULL) {
1432: if (rcs_head_set(rf, prevrdp->rd_num) < 0)
1433: errx(1, "rcs_head_set failed");
1434: } else if (nextrdp != NULL) {
1435: rcsnum_free(nextrdp->rd_next);
1436: nextrdp->rd_next = rcsnum_alloc();
1437: } else {
1438: rcsnum_free(rf->rf_head);
1439: rf->rf_head = NULL;
1440: }
1441:
1442: rf->rf_ndelta--;
1443: rf->rf_flags &= ~RCS_SYNCED;
1444:
1445: rcs_freedelta(rdp);
1446:
1.7 xsa 1447: if (path_tmp1 != NULL)
1448: xfree(path_tmp1);
1449: if (path_tmp2 != NULL)
1450: xfree(path_tmp2);
1.1 joris 1451:
1452: return (0);
1453: }
1454:
1455: /*
1456: * rcs_findrev()
1457: *
1458: * Find a specific revision's delta entry in the tree of the RCS file <rfp>.
1459: * The revision number is given in <rev>.
1460: *
1461: * If the given revision is a branch number, we translate it into the latest
1462: * revision on the branch.
1463: *
1464: * Returns a pointer to the delta on success, or NULL on failure.
1465: */
1466: struct rcs_delta *
1467: rcs_findrev(RCSFILE *rfp, RCSNUM *rev)
1468: {
1469: u_int cmplen;
1470: struct rcs_delta *rdp;
1471: RCSNUM *brev, *frev;
1472:
1473: /*
1474: * We need to do more parsing if the last revision in the linked list
1475: * is greater than the requested revision.
1476: */
1477: rdp = TAILQ_LAST(&(rfp->rf_delta), rcs_dlist);
1478: if (rdp == NULL ||
1479: rcsnum_cmp(rdp->rd_num, rev, 0) == -1) {
1480: rcs_parse_deltas(rfp, rev);
1481: }
1482:
1483: /*
1484: * Translate a branch into the latest revision on the branch itself.
1485: */
1486: if (RCSNUM_ISBRANCH(rev)) {
1487: brev = rcsnum_brtorev(rev);
1488: frev = brev;
1489: for (;;) {
1490: rdp = rcs_findrev(rfp, frev);
1491: if (rdp == NULL)
1492: return (NULL);
1493:
1494: if (rdp->rd_next->rn_len == 0)
1495: break;
1496:
1497: frev = rdp->rd_next;
1498: }
1499:
1500: rcsnum_free(brev);
1501: return (rdp);
1502: }
1503:
1504: cmplen = rev->rn_len;
1505:
1506: TAILQ_FOREACH(rdp, &(rfp->rf_delta), rd_list) {
1507: if (rcsnum_cmp(rdp->rd_num, rev, cmplen) == 0)
1508: return (rdp);
1509: }
1510:
1511: return (NULL);
1512: }
1513:
1514: /*
1515: * rcs_kwexp_set()
1516: *
1517: * Set the keyword expansion mode to use on the RCS file <file> to <mode>.
1518: */
1519: void
1520: rcs_kwexp_set(RCSFILE *file, int mode)
1521: {
1522: int i;
1523: char *tmp, buf[8] = "";
1524:
1525: if (RCS_KWEXP_INVAL(mode))
1526: return;
1527:
1528: i = 0;
1529: if (mode == RCS_KWEXP_NONE)
1530: buf[0] = 'b';
1531: else if (mode == RCS_KWEXP_OLD)
1532: buf[0] = 'o';
1533: else {
1534: if (mode & RCS_KWEXP_NAME)
1535: buf[i++] = 'k';
1536: if (mode & RCS_KWEXP_VAL)
1537: buf[i++] = 'v';
1538: if (mode & RCS_KWEXP_LKR)
1539: buf[i++] = 'l';
1540: }
1541:
1542: tmp = xstrdup(buf);
1543: if (file->rf_expand != NULL)
1544: xfree(file->rf_expand);
1545: file->rf_expand = tmp;
1546: /* not synced anymore */
1547: file->rf_flags &= ~RCS_SYNCED;
1548: }
1549:
1550: /*
1551: * rcs_kwexp_get()
1552: *
1553: * Retrieve the keyword expansion mode to be used for the RCS file <file>.
1554: */
1555: int
1556: rcs_kwexp_get(RCSFILE *file)
1557: {
1558: return rcs_kflag_get(file->rf_expand);
1559: }
1560:
1561: /*
1562: * rcs_kflag_get()
1563: *
1564: * Get the keyword expansion mode from a set of character flags given in
1565: * <flags> and return the appropriate flag mask. In case of an error, the
1566: * returned mask will have the RCS_KWEXP_ERR bit set to 1.
1567: */
1568: int
1569: rcs_kflag_get(const char *flags)
1570: {
1571: int fl;
1572: size_t len;
1573: const char *fp;
1574:
1575: fl = 0;
1576: len = strlen(flags);
1577:
1578: for (fp = flags; *fp != '\0'; fp++) {
1579: if (*fp == 'k')
1580: fl |= RCS_KWEXP_NAME;
1581: else if (*fp == 'v')
1582: fl |= RCS_KWEXP_VAL;
1583: else if (*fp == 'l')
1584: fl |= RCS_KWEXP_LKR;
1585: else if (*fp == 'o') {
1586: if (len != 1)
1587: fl |= RCS_KWEXP_ERR;
1588: fl |= RCS_KWEXP_OLD;
1589: } else if (*fp == 'b') {
1590: if (len != 1)
1591: fl |= RCS_KWEXP_ERR;
1592: } else /* unknown letter */
1593: fl |= RCS_KWEXP_ERR;
1594: }
1595:
1596: return (fl);
1597: }
1598:
1599: /*
1600: * rcs_errstr()
1601: *
1602: * Get the error string matching the RCS error code <code>.
1603: */
1604: const char *
1605: rcs_errstr(int code)
1606: {
1607: const char *esp;
1608:
1609: if (code < 0 || (code >= (int)RCS_NERR && code != RCS_ERR_ERRNO))
1610: esp = NULL;
1611: else if (code == RCS_ERR_ERRNO)
1612: esp = strerror(errno);
1613: else
1614: esp = rcs_errstrs[code];
1615: return (esp);
1616: }
1617:
1618: /* rcs_parse_deltas()
1619: *
1620: * Parse deltas. If <rev> is not NULL, parse only as far as that
1621: * revision. If <rev> is NULL, parse all deltas.
1622: */
1623: static void
1624: rcs_parse_deltas(RCSFILE *rfp, RCSNUM *rev)
1625: {
1626: int ret;
1627: struct rcs_delta *enddelta;
1628:
1629: if ((rfp->rf_flags & PARSED_DELTAS) || (rfp->rf_flags & RCS_CREATE))
1630: return;
1631:
1632: for (;;) {
1633: ret = rcs_parse_delta(rfp);
1634: if (rev != NULL) {
1635: enddelta = TAILQ_LAST(&(rfp->rf_delta), rcs_dlist);
1636: if (rcsnum_cmp(enddelta->rd_num, rev, 0) == 0)
1637: break;
1638: }
1639: if (ret == 0) {
1640: rfp->rf_flags |= PARSED_DELTAS;
1641: break;
1642: }
1643: else if (ret == -1)
1644: errx(1, "error parsing deltas");
1645: }
1646: }
1647:
1648: /* rcs_parse_deltatexts()
1649: *
1650: * Parse deltatexts. If <rev> is not NULL, parse only as far as that
1651: * revision. If <rev> is NULL, parse everything.
1652: */
1653: static void
1654: rcs_parse_deltatexts(RCSFILE *rfp, RCSNUM *rev)
1655: {
1656: int ret;
1657: struct rcs_delta *rdp;
1658:
1659: if ((rfp->rf_flags & PARSED_DELTATEXTS) ||
1660: (rfp->rf_flags & RCS_CREATE))
1661: return;
1662:
1663: if (!(rfp->rf_flags & PARSED_DESC))
1664: rcs_parse_desc(rfp, rev);
1665: for (;;) {
1666: if (rev != NULL) {
1667: rdp = rcs_findrev(rfp, rev);
1668: if (rdp->rd_text != NULL)
1669: break;
1670: else
1671: ret = rcs_parse_deltatext(rfp);
1672: } else
1673: ret = rcs_parse_deltatext(rfp);
1674: if (ret == 0) {
1675: rfp->rf_flags |= PARSED_DELTATEXTS;
1676: break;
1677: }
1678: else if (ret == -1)
1679: errx(1, "problem parsing deltatexts");
1680: }
1681: }
1682:
1683: /* rcs_parse_desc()
1684: *
1685: * Parse RCS description.
1686: */
1687: static void
1688: rcs_parse_desc(RCSFILE *rfp, RCSNUM *rev)
1689: {
1690: int ret = 0;
1691:
1692: if ((rfp->rf_flags & PARSED_DESC) || (rfp->rf_flags & RCS_CREATE))
1693: return;
1694: if (!(rfp->rf_flags & PARSED_DELTAS))
1695: rcs_parse_deltas(rfp, rev);
1696: /* do parsing */
1697: ret = rcs_gettok(rfp);
1698: if (ret != RCS_TOK_DESC)
1699: errx(1, "token `%s' found where RCS desc expected",
1700: RCS_TOKSTR(rfp));
1701:
1702: ret = rcs_gettok(rfp);
1703: if (ret != RCS_TOK_STRING)
1704: errx(1, "token `%s' found where RCS desc expected",
1705: RCS_TOKSTR(rfp));
1706:
1707: rfp->rf_desc = xstrdup(RCS_TOKSTR(rfp));
1708: rfp->rf_flags |= PARSED_DESC;
1709: }
1710:
1711: /*
1712: * rcs_parse_init()
1713: *
1714: * Initial parsing of file <path>, which are in the RCS format.
1715: * Just does admin section.
1716: */
1717: static void
1718: rcs_parse_init(RCSFILE *rfp)
1719: {
1720: struct rcs_pdata *pdp;
1721:
1722: if (rfp->rf_flags & RCS_PARSED)
1723: return;
1724:
1725: pdp = xcalloc(1, sizeof(*pdp));
1726:
1727: pdp->rp_lines = 0;
1728: pdp->rp_pttype = RCS_TOK_ERR;
1729:
1.10 ray 1730: if ((pdp->rp_file = fdopen(rfp->rf_fd, "r")) == NULL)
1.42 xsa 1731: err(1, "fdopen: `%s'", rfp->rf_path);
1.1 joris 1732:
1733: pdp->rp_buf = xmalloc((size_t)RCS_BUFSIZE);
1734: pdp->rp_blen = RCS_BUFSIZE;
1735: pdp->rp_bufend = pdp->rp_buf + pdp->rp_blen - 1;
1736:
1737: /* ditch the strict lock */
1738: rfp->rf_flags &= ~RCS_SLOCK;
1739: rfp->rf_pdata = pdp;
1740:
1741: if (rcs_parse_admin(rfp) < 0) {
1742: rcs_freepdata(pdp);
1743: errx(1, "could not parse admin data");
1744: }
1745:
1746: if (rfp->rf_flags & RCS_PARSE_FULLY)
1747: rcs_parse_deltatexts(rfp, NULL);
1748:
1749: rfp->rf_flags |= RCS_SYNCED;
1750: }
1751:
1752: /*
1753: * rcs_parse_admin()
1754: *
1755: * Parse the administrative portion of an RCS file.
1756: * Returns the type of the first token found after the admin section on
1757: * success, or -1 on failure.
1758: */
1759: static int
1760: rcs_parse_admin(RCSFILE *rfp)
1761: {
1762: u_int i;
1763: int tok, ntok, hmask;
1764: struct rcs_key *rk;
1765:
1766: /* hmask is a mask of the headers already encountered */
1767: hmask = 0;
1768: for (;;) {
1769: tok = rcs_gettok(rfp);
1770: if (tok == RCS_TOK_ERR) {
1771: rcs_errno = RCS_ERR_PARSE;
1772: warnx("parse error in RCS admin section");
1773: goto fail;
1774: } else if (tok == RCS_TOK_NUM || tok == RCS_TOK_DESC) {
1775: /*
1776: * Assume this is the start of the first delta or
1777: * that we are dealing with an empty RCS file and
1778: * we just found the description.
1779: */
1780: rcs_pushtok(rfp, RCS_TOKSTR(rfp), tok);
1781: return (tok);
1782: }
1783:
1784: rk = NULL;
1785: for (i = 0; i < RCS_NKEYS; i++)
1786: if (rcs_keys[i].rk_id == tok)
1787: rk = &(rcs_keys[i]);
1788:
1789: if (hmask & (1 << tok)) {
1790: rcs_errno = RCS_ERR_PARSE;
1791: warnx("duplicate RCS key");
1792: goto fail;
1793: }
1794: hmask |= (1 << tok);
1795:
1796: switch (tok) {
1797: case RCS_TOK_HEAD:
1798: case RCS_TOK_BRANCH:
1799: case RCS_TOK_COMMENT:
1800: case RCS_TOK_EXPAND:
1801: ntok = rcs_gettok(rfp);
1802: if (ntok == RCS_TOK_SCOLON)
1803: break;
1804: if (ntok != rk->rk_val) {
1805: rcs_errno = RCS_ERR_PARSE;
1806: warnx("invalid value type for RCS key `%s'",
1807: rk->rk_str);
1808: }
1809:
1810: if (tok == RCS_TOK_HEAD) {
1811: if (rfp->rf_head == NULL)
1812: rfp->rf_head = rcsnum_alloc();
1813: rcsnum_aton(RCS_TOKSTR(rfp), NULL,
1814: rfp->rf_head);
1815: } else if (tok == RCS_TOK_BRANCH) {
1816: if (rfp->rf_branch == NULL)
1817: rfp->rf_branch = rcsnum_alloc();
1818: if (rcsnum_aton(RCS_TOKSTR(rfp), NULL,
1819: rfp->rf_branch) < 0)
1820: goto fail;
1821: } else if (tok == RCS_TOK_COMMENT) {
1822: rfp->rf_comment = xstrdup(RCS_TOKSTR(rfp));
1823: } else if (tok == RCS_TOK_EXPAND) {
1824: rfp->rf_expand = xstrdup(RCS_TOKSTR(rfp));
1825: }
1826:
1827: /* now get the expected semi-colon */
1828: ntok = rcs_gettok(rfp);
1829: if (ntok != RCS_TOK_SCOLON) {
1830: rcs_errno = RCS_ERR_PARSE;
1831: warnx("missing semi-colon after RCS `%s' key",
1832: rk->rk_str);
1833: goto fail;
1834: }
1835: break;
1836: case RCS_TOK_ACCESS:
1837: if (rcs_parse_access(rfp) < 0)
1838: goto fail;
1839: break;
1840: case RCS_TOK_SYMBOLS:
1841: if (rcs_parse_symbols(rfp) < 0)
1842: goto fail;
1843: break;
1844: case RCS_TOK_LOCKS:
1845: if (rcs_parse_locks(rfp) < 0)
1846: goto fail;
1847: break;
1848: default:
1849: rcs_errno = RCS_ERR_PARSE;
1850: warnx("unexpected token `%s' in RCS admin section",
1851: RCS_TOKSTR(rfp));
1852: goto fail;
1853: }
1854: }
1855:
1856: fail:
1857: return (-1);
1858: }
1859:
1860: /*
1861: * rcs_parse_delta()
1862: *
1863: * Parse an RCS delta section and allocate the structure to store that delta's
1864: * information in the <rfp> delta list.
1865: * Returns 1 if the section was parsed OK, 0 if it is the last delta, and
1866: * -1 on error.
1867: */
1868: static int
1869: rcs_parse_delta(RCSFILE *rfp)
1870: {
1871: int ret, tok, ntok, hmask;
1872: u_int i;
1873: char *tokstr;
1874: RCSNUM *datenum;
1875: struct rcs_delta *rdp;
1876: struct rcs_key *rk;
1877:
1878: tok = rcs_gettok(rfp);
1879: if (tok == RCS_TOK_DESC) {
1880: rcs_pushtok(rfp, RCS_TOKSTR(rfp), tok);
1881: return (0);
1882: } else if (tok != RCS_TOK_NUM) {
1883: rcs_errno = RCS_ERR_PARSE;
1884: warnx("unexpected token `%s' at start of delta",
1885: RCS_TOKSTR(rfp));
1886: return (-1);
1887: }
1.34 niallo 1888:
1889: rdp = xcalloc(1, sizeof(*rdp));
1890:
1891: rdp->rd_num = rcsnum_alloc();
1892: rdp->rd_next = rcsnum_alloc();
1893:
1894: TAILQ_INIT(&(rdp->rd_branches));
1895:
1.1 joris 1896: rcsnum_aton(RCS_TOKSTR(rfp), NULL, rdp->rd_num);
1897:
1898: hmask = 0;
1899: ret = 0;
1900: tokstr = NULL;
1901:
1902: for (;;) {
1903: tok = rcs_gettok(rfp);
1904: if (tok == RCS_TOK_ERR) {
1905: rcs_errno = RCS_ERR_PARSE;
1906: warnx("parse error in RCS delta section");
1907: rcs_freedelta(rdp);
1908: return (-1);
1909: } else if (tok == RCS_TOK_NUM || tok == RCS_TOK_DESC) {
1910: rcs_pushtok(rfp, RCS_TOKSTR(rfp), tok);
1911: ret = (tok == RCS_TOK_NUM ? 1 : 0);
1912: break;
1913: }
1914:
1915: rk = NULL;
1916: for (i = 0; i < RCS_NKEYS; i++)
1917: if (rcs_keys[i].rk_id == tok)
1918: rk = &(rcs_keys[i]);
1919:
1920: if (hmask & (1 << tok)) {
1921: rcs_errno = RCS_ERR_PARSE;
1922: warnx("duplicate RCS key");
1923: rcs_freedelta(rdp);
1924: return (-1);
1925: }
1926: hmask |= (1 << tok);
1927:
1928: switch (tok) {
1929: case RCS_TOK_DATE:
1930: case RCS_TOK_AUTHOR:
1931: case RCS_TOK_STATE:
1932: case RCS_TOK_NEXT:
1.43 sturm 1933: case RCS_TOK_COMMITID:
1.1 joris 1934: ntok = rcs_gettok(rfp);
1935: if (ntok == RCS_TOK_SCOLON) {
1936: if (rk->rk_flags & RCS_VOPT)
1937: break;
1938: else {
1939: rcs_errno = RCS_ERR_PARSE;
1940: warnx("missing mandatory "
1941: "value to RCS key `%s'",
1942: rk->rk_str);
1943: rcs_freedelta(rdp);
1944: return (-1);
1945: }
1946: }
1947:
1948: if (ntok != rk->rk_val) {
1949: rcs_errno = RCS_ERR_PARSE;
1950: warnx("invalid value type for RCS key `%s'",
1951: rk->rk_str);
1952: rcs_freedelta(rdp);
1953: return (-1);
1954: }
1955:
1956: if (tokstr != NULL)
1957: xfree(tokstr);
1958: tokstr = xstrdup(RCS_TOKSTR(rfp));
1959: /* now get the expected semi-colon */
1960: ntok = rcs_gettok(rfp);
1961: if (ntok != RCS_TOK_SCOLON) {
1962: rcs_errno = RCS_ERR_PARSE;
1963: warnx("missing semi-colon after RCS `%s' key",
1964: rk->rk_str);
1965: xfree(tokstr);
1966: rcs_freedelta(rdp);
1967: return (-1);
1968: }
1969:
1970: if (tok == RCS_TOK_DATE) {
1971: if ((datenum = rcsnum_parse(tokstr)) == NULL) {
1972: xfree(tokstr);
1973: rcs_freedelta(rdp);
1974: return (-1);
1975: }
1976: if (datenum->rn_len != 6) {
1977: rcs_errno = RCS_ERR_PARSE;
1978: warnx("RCS date specification has %s "
1979: "fields",
1980: (datenum->rn_len > 6) ? "too many" :
1981: "missing");
1982: xfree(tokstr);
1983: rcs_freedelta(rdp);
1984: rcsnum_free(datenum);
1985: return (-1);
1986: }
1987: rdp->rd_date.tm_year = datenum->rn_id[0];
1988: if (rdp->rd_date.tm_year >= 1900)
1989: rdp->rd_date.tm_year -= 1900;
1990: rdp->rd_date.tm_mon = datenum->rn_id[1] - 1;
1991: rdp->rd_date.tm_mday = datenum->rn_id[2];
1992: rdp->rd_date.tm_hour = datenum->rn_id[3];
1993: rdp->rd_date.tm_min = datenum->rn_id[4];
1994: rdp->rd_date.tm_sec = datenum->rn_id[5];
1995: rcsnum_free(datenum);
1996: } else if (tok == RCS_TOK_AUTHOR) {
1997: rdp->rd_author = tokstr;
1998: tokstr = NULL;
1999: } else if (tok == RCS_TOK_STATE) {
2000: rdp->rd_state = tokstr;
2001: tokstr = NULL;
2002: } else if (tok == RCS_TOK_NEXT) {
2003: rcsnum_aton(tokstr, NULL, rdp->rd_next);
1.43 sturm 2004: } else if (tok == RCS_TOK_COMMITID) {
2005: /* XXX just parse it, no action yet */
1.1 joris 2006: }
2007: break;
2008: case RCS_TOK_BRANCHES:
2009: if (rcs_parse_branches(rfp, rdp) < 0) {
2010: rcs_freedelta(rdp);
2011: return (-1);
2012: }
2013: break;
2014: default:
2015: rcs_errno = RCS_ERR_PARSE;
2016: warnx("unexpected token `%s' in RCS delta",
2017: RCS_TOKSTR(rfp));
2018: rcs_freedelta(rdp);
2019: return (-1);
2020: }
2021: }
2022:
2023: if (tokstr != NULL)
2024: xfree(tokstr);
2025:
2026: TAILQ_INSERT_TAIL(&(rfp->rf_delta), rdp, rd_list);
2027: rfp->rf_ndelta++;
2028:
2029: return (ret);
2030: }
2031:
2032: /*
2033: * rcs_parse_deltatext()
2034: *
2035: * Parse an RCS delta text section and fill in the log and text field of the
2036: * appropriate delta section.
2037: * Returns 1 if the section was parsed OK, 0 if it is the last delta, and
2038: * -1 on error.
2039: */
2040: static int
2041: rcs_parse_deltatext(RCSFILE *rfp)
2042: {
2043: int tok;
2044: RCSNUM *tnum;
2045: struct rcs_delta *rdp;
2046:
2047: tok = rcs_gettok(rfp);
2048: if (tok == RCS_TOK_EOF)
2049: return (0);
2050:
2051: if (tok != RCS_TOK_NUM) {
2052: rcs_errno = RCS_ERR_PARSE;
2053: warnx("unexpected token `%s' at start of RCS delta text",
2054: RCS_TOKSTR(rfp));
2055: return (-1);
2056: }
2057:
2058: tnum = rcsnum_alloc();
2059: rcsnum_aton(RCS_TOKSTR(rfp), NULL, tnum);
2060:
2061: TAILQ_FOREACH(rdp, &(rfp->rf_delta), rd_list) {
2062: if (rcsnum_cmp(tnum, rdp->rd_num, 0) == 0)
2063: break;
2064: }
2065: rcsnum_free(tnum);
2066:
2067: if (rdp == NULL) {
2068: warnx("RCS delta text `%s' has no matching delta",
2069: RCS_TOKSTR(rfp));
2070: return (-1);
2071: }
2072:
2073: tok = rcs_gettok(rfp);
2074: if (tok != RCS_TOK_LOG) {
2075: rcs_errno = RCS_ERR_PARSE;
2076: warnx("unexpected token `%s' where RCS log expected",
2077: RCS_TOKSTR(rfp));
2078: return (-1);
2079: }
2080:
2081: tok = rcs_gettok(rfp);
2082: if (tok != RCS_TOK_STRING) {
2083: rcs_errno = RCS_ERR_PARSE;
2084: warnx("unexpected token `%s' where RCS log expected",
2085: RCS_TOKSTR(rfp));
2086: return (-1);
2087: }
2088: rdp->rd_log = xstrdup(RCS_TOKSTR(rfp));
2089: tok = rcs_gettok(rfp);
2090: if (tok != RCS_TOK_TEXT) {
2091: rcs_errno = RCS_ERR_PARSE;
2092: warnx("unexpected token `%s' where RCS text expected",
2093: RCS_TOKSTR(rfp));
2094: return (-1);
2095: }
2096:
2097: tok = rcs_gettok(rfp);
2098: if (tok != RCS_TOK_STRING) {
2099: rcs_errno = RCS_ERR_PARSE;
2100: warnx("unexpected token `%s' where RCS text expected",
2101: RCS_TOKSTR(rfp));
2102: return (-1);
2103: }
2104:
1.12 niallo 2105: if (RCS_TOKLEN(rfp) == 0) {
2106: rdp->rd_text = xmalloc(1);
2107: rdp->rd_text[0] = '\0';
2108: rdp->rd_tlen = 0;
2109: } else {
2110: rdp->rd_text = xmalloc(RCS_TOKLEN(rfp));
2111: memcpy(rdp->rd_text, RCS_TOKSTR(rfp), (RCS_TOKLEN(rfp)));
2112: rdp->rd_tlen = RCS_TOKLEN(rfp);
2113: }
1.1 joris 2114:
2115: return (1);
2116: }
2117:
2118: /*
2119: * rcs_parse_access()
2120: *
2121: * Parse the access list given as value to the `access' keyword.
2122: * Returns 0 on success, or -1 on failure.
2123: */
2124: static int
2125: rcs_parse_access(RCSFILE *rfp)
2126: {
2127: int type;
2128:
2129: while ((type = rcs_gettok(rfp)) != RCS_TOK_SCOLON) {
2130: if (type != RCS_TOK_ID) {
2131: rcs_errno = RCS_ERR_PARSE;
2132: warnx("unexpected token `%s' in access list",
2133: RCS_TOKSTR(rfp));
2134: return (-1);
2135: }
2136:
2137: if (rcs_access_add(rfp, RCS_TOKSTR(rfp)) < 0)
2138: return (-1);
2139: }
2140:
2141: return (0);
2142: }
2143:
2144: /*
2145: * rcs_parse_symbols()
2146: *
2147: * Parse the symbol list given as value to the `symbols' keyword.
2148: * Returns 0 on success, or -1 on failure.
2149: */
2150: static int
2151: rcs_parse_symbols(RCSFILE *rfp)
2152: {
2153: int type;
2154: struct rcs_sym *symp;
2155:
2156: for (;;) {
2157: type = rcs_gettok(rfp);
2158: if (type == RCS_TOK_SCOLON)
2159: break;
2160:
2161: if (type != RCS_TOK_ID) {
2162: rcs_errno = RCS_ERR_PARSE;
2163: warnx("unexpected token `%s' in symbol list",
2164: RCS_TOKSTR(rfp));
2165: return (-1);
2166: }
2167:
2168: symp = xmalloc(sizeof(*symp));
2169: symp->rs_name = xstrdup(RCS_TOKSTR(rfp));
2170: symp->rs_num = rcsnum_alloc();
2171:
2172: type = rcs_gettok(rfp);
2173: if (type != RCS_TOK_COLON) {
2174: rcs_errno = RCS_ERR_PARSE;
2175: warnx("unexpected token `%s' in symbol list",
2176: RCS_TOKSTR(rfp));
2177: rcsnum_free(symp->rs_num);
2178: xfree(symp->rs_name);
2179: xfree(symp);
2180: return (-1);
2181: }
2182:
2183: type = rcs_gettok(rfp);
2184: if (type != RCS_TOK_NUM) {
2185: rcs_errno = RCS_ERR_PARSE;
2186: warnx("unexpected token `%s' in symbol list",
2187: RCS_TOKSTR(rfp));
2188: rcsnum_free(symp->rs_num);
2189: xfree(symp->rs_name);
2190: xfree(symp);
2191: return (-1);
2192: }
2193:
2194: if (rcsnum_aton(RCS_TOKSTR(rfp), NULL, symp->rs_num) < 0) {
2195: warnx("failed to parse RCS NUM `%s'",
2196: RCS_TOKSTR(rfp));
2197: rcsnum_free(symp->rs_num);
2198: xfree(symp->rs_name);
2199: xfree(symp);
2200: return (-1);
2201: }
2202:
2203: TAILQ_INSERT_TAIL(&(rfp->rf_symbols), symp, rs_list);
2204: }
2205:
2206: return (0);
2207: }
2208:
2209: /*
2210: * rcs_parse_locks()
2211: *
2212: * Parse the lock list given as value to the `locks' keyword.
2213: * Returns 0 on success, or -1 on failure.
2214: */
2215: static int
2216: rcs_parse_locks(RCSFILE *rfp)
2217: {
2218: int type;
2219: struct rcs_lock *lkp;
2220:
2221: for (;;) {
2222: type = rcs_gettok(rfp);
2223: if (type == RCS_TOK_SCOLON)
2224: break;
2225:
2226: if (type != RCS_TOK_ID) {
2227: rcs_errno = RCS_ERR_PARSE;
2228: warnx("unexpected token `%s' in lock list",
2229: RCS_TOKSTR(rfp));
2230: return (-1);
2231: }
2232:
2233: lkp = xmalloc(sizeof(*lkp));
2234: lkp->rl_name = xstrdup(RCS_TOKSTR(rfp));
2235: lkp->rl_num = rcsnum_alloc();
2236:
2237: type = rcs_gettok(rfp);
2238: if (type != RCS_TOK_COLON) {
2239: rcs_errno = RCS_ERR_PARSE;
2240: warnx("unexpected token `%s' in symbol list",
2241: RCS_TOKSTR(rfp));
2242: rcsnum_free(lkp->rl_num);
2243: xfree(lkp->rl_name);
2244: xfree(lkp);
2245: return (-1);
2246: }
2247:
2248: type = rcs_gettok(rfp);
2249: if (type != RCS_TOK_NUM) {
2250: rcs_errno = RCS_ERR_PARSE;
2251: warnx("unexpected token `%s' in symbol list",
2252: RCS_TOKSTR(rfp));
2253: rcsnum_free(lkp->rl_num);
2254: xfree(lkp->rl_name);
2255: xfree(lkp);
2256: return (-1);
2257: }
2258:
2259: if (rcsnum_aton(RCS_TOKSTR(rfp), NULL, lkp->rl_num) < 0) {
2260: warnx("failed to parse RCS NUM `%s'",
2261: RCS_TOKSTR(rfp));
2262: rcsnum_free(lkp->rl_num);
2263: xfree(lkp->rl_name);
2264: xfree(lkp);
2265: return (-1);
2266: }
2267:
2268: TAILQ_INSERT_HEAD(&(rfp->rf_locks), lkp, rl_list);
2269: }
2270:
2271: /* check if we have a `strict' */
2272: type = rcs_gettok(rfp);
2273: if (type != RCS_TOK_STRICT) {
2274: rcs_pushtok(rfp, RCS_TOKSTR(rfp), type);
2275: } else {
2276: rfp->rf_flags |= RCS_SLOCK;
2277:
2278: type = rcs_gettok(rfp);
2279: if (type != RCS_TOK_SCOLON) {
2280: rcs_errno = RCS_ERR_PARSE;
2281: warnx("missing semi-colon after `strict' keyword");
2282: return (-1);
2283: }
2284: }
2285:
2286: return (0);
2287: }
2288:
2289: /*
2290: * rcs_parse_branches()
2291: *
2292: * Parse the list of branches following a `branches' keyword in a delta.
2293: * Returns 0 on success, or -1 on failure.
2294: */
2295: static int
2296: rcs_parse_branches(RCSFILE *rfp, struct rcs_delta *rdp)
2297: {
2298: int type;
2299: struct rcs_branch *brp;
2300:
2301: for (;;) {
2302: type = rcs_gettok(rfp);
2303: if (type == RCS_TOK_SCOLON)
2304: break;
2305:
2306: if (type != RCS_TOK_NUM) {
2307: rcs_errno = RCS_ERR_PARSE;
2308: warnx("unexpected token `%s' in list of branches",
2309: RCS_TOKSTR(rfp));
2310: return (-1);
2311: }
2312:
2313: brp = xmalloc(sizeof(*brp));
2314: brp->rb_num = rcsnum_parse(RCS_TOKSTR(rfp));
2315: if (brp->rb_num == NULL) {
2316: xfree(brp);
2317: return (-1);
2318: }
2319:
2320: TAILQ_INSERT_TAIL(&(rdp->rd_branches), brp, rb_list);
2321: }
2322:
2323: return (0);
2324: }
2325:
2326: /*
2327: * rcs_freedelta()
2328: *
2329: * Free the contents of a delta structure.
2330: */
2331: static void
2332: rcs_freedelta(struct rcs_delta *rdp)
2333: {
2334: struct rcs_branch *rb;
2335:
2336: if (rdp->rd_num != NULL)
2337: rcsnum_free(rdp->rd_num);
2338: if (rdp->rd_next != NULL)
2339: rcsnum_free(rdp->rd_next);
2340:
2341: if (rdp->rd_author != NULL)
2342: xfree(rdp->rd_author);
2343: if (rdp->rd_locker != NULL)
2344: xfree(rdp->rd_locker);
2345: if (rdp->rd_state != NULL)
2346: xfree(rdp->rd_state);
2347: if (rdp->rd_log != NULL)
2348: xfree(rdp->rd_log);
2349: if (rdp->rd_text != NULL)
2350: xfree(rdp->rd_text);
2351:
2352: while ((rb = TAILQ_FIRST(&(rdp->rd_branches))) != NULL) {
2353: TAILQ_REMOVE(&(rdp->rd_branches), rb, rb_list);
2354: rcsnum_free(rb->rb_num);
2355: xfree(rb);
2356: }
2357:
2358: xfree(rdp);
2359: }
2360:
2361: /*
2362: * rcs_freepdata()
2363: *
2364: * Free the contents of the parser data structure.
2365: */
2366: static void
2367: rcs_freepdata(struct rcs_pdata *pd)
2368: {
2369: if (pd->rp_file != NULL)
2370: (void)fclose(pd->rp_file);
2371: if (pd->rp_buf != NULL)
2372: xfree(pd->rp_buf);
2373: xfree(pd);
2374: }
2375:
2376: /*
2377: * rcs_gettok()
2378: *
2379: * Get the next RCS token from the string <str>.
2380: */
2381: static int
2382: rcs_gettok(RCSFILE *rfp)
2383: {
2384: u_int i;
2385: int ch, last, type;
2386: size_t len;
2387: char *bp;
2388: struct rcs_pdata *pdp = (struct rcs_pdata *)rfp->rf_pdata;
2389:
2390: type = RCS_TOK_ERR;
2391: bp = pdp->rp_buf;
2392: pdp->rp_tlen = 0;
2393: *bp = '\0';
2394:
2395: if (pdp->rp_pttype != RCS_TOK_ERR) {
2396: type = pdp->rp_pttype;
1.5 ray 2397: if (strlcpy(pdp->rp_buf, pdp->rp_ptok, pdp->rp_blen) >=
2398: pdp->rp_blen)
2399: errx(1, "rcs_gettok: strlcpy");
1.1 joris 2400: pdp->rp_pttype = RCS_TOK_ERR;
2401: return (type);
2402: }
2403:
2404: /* skip leading whitespace */
2405: /* XXX we must skip backspace too for compatibility, should we? */
2406: do {
2407: ch = getc(pdp->rp_file);
2408: if (ch == '\n')
2409: pdp->rp_lines++;
2410: } while (isspace(ch));
2411:
2412: if (ch == EOF) {
2413: type = RCS_TOK_EOF;
2414: } else if (ch == ';') {
2415: type = RCS_TOK_SCOLON;
2416: } else if (ch == ':') {
2417: type = RCS_TOK_COLON;
1.39 niallo 2418: } else if (isalpha(ch) || ch == '_' || ch == '$' || ch == '.' || ch == '-') {
1.1 joris 2419: type = RCS_TOK_ID;
2420: *(bp++) = ch;
2421: for (;;) {
2422: ch = getc(pdp->rp_file);
1.32 millert 2423: if (ch == EOF) {
2424: type = RCS_TOK_EOF;
2425: break;
2426: } else if (!isalnum(ch) && ch != '_' && ch != '-' &&
1.39 niallo 2427: ch != '/' && ch != '.' && ch != '$') {
1.1 joris 2428: ungetc(ch, pdp->rp_file);
2429: break;
2430: }
2431: *(bp++) = ch;
2432: pdp->rp_tlen++;
2433: if (bp == pdp->rp_bufend - 1) {
2434: len = bp - pdp->rp_buf;
2435: rcs_growbuf(rfp);
2436: bp = pdp->rp_buf + len;
2437: }
2438: }
2439: *bp = '\0';
2440:
2441: if (type != RCS_TOK_ERR) {
2442: for (i = 0; i < RCS_NKEYS; i++) {
2443: if (strcmp(rcs_keys[i].rk_str,
2444: pdp->rp_buf) == 0) {
2445: type = rcs_keys[i].rk_id;
2446: break;
2447: }
2448: }
2449: }
2450: } else if (ch == '@') {
2451: /* we have a string */
2452: type = RCS_TOK_STRING;
2453: for (;;) {
2454: ch = getc(pdp->rp_file);
1.32 millert 2455: if (ch == EOF) {
2456: type = RCS_TOK_EOF;
2457: break;
2458: } else if (ch == '@') {
1.1 joris 2459: ch = getc(pdp->rp_file);
2460: if (ch != '@') {
2461: ungetc(ch, pdp->rp_file);
2462: break;
2463: }
2464: } else if (ch == '\n')
2465: pdp->rp_lines++;
2466:
2467: *(bp++) = ch;
2468: pdp->rp_tlen++;
2469: if (bp == pdp->rp_bufend - 1) {
2470: len = bp - pdp->rp_buf;
2471: rcs_growbuf(rfp);
2472: bp = pdp->rp_buf + len;
2473: }
2474: }
2475:
2476: *bp = '\0';
2477: } else if (isdigit(ch)) {
2478: *(bp++) = ch;
2479: last = ch;
2480: type = RCS_TOK_NUM;
2481:
2482: for (;;) {
2483: ch = getc(pdp->rp_file);
1.32 millert 2484: if (ch == EOF) {
2485: type = RCS_TOK_EOF;
2486: break;
2487: }
1.1 joris 2488: if (bp == pdp->rp_bufend)
2489: break;
1.43 sturm 2490: if (isalpha(ch) && ch != '.') {
2491: type = RCS_TOK_ID;
2492: } else if (!isdigit(ch) && ch != '.') {
1.1 joris 2493: ungetc(ch, pdp->rp_file);
2494: break;
2495: }
2496:
2497: if (last == '.' && ch == '.') {
2498: type = RCS_TOK_ERR;
2499: break;
2500: }
2501: last = ch;
2502: *(bp++) = ch;
2503: pdp->rp_tlen++;
2504: }
2505: *bp = '\0';
2506: }
2507:
2508: return (type);
2509: }
2510:
2511: /*
2512: * rcs_pushtok()
2513: *
2514: * Push a token back in the parser's token buffer.
2515: */
2516: static int
2517: rcs_pushtok(RCSFILE *rfp, const char *tok, int type)
2518: {
2519: struct rcs_pdata *pdp = (struct rcs_pdata *)rfp->rf_pdata;
2520:
2521: if (pdp->rp_pttype != RCS_TOK_ERR)
2522: return (-1);
2523:
2524: pdp->rp_pttype = type;
1.5 ray 2525: if (strlcpy(pdp->rp_ptok, tok, sizeof(pdp->rp_ptok)) >=
2526: sizeof(pdp->rp_ptok))
2527: errx(1, "rcs_pushtok: strlcpy");
1.1 joris 2528: return (0);
2529: }
2530:
2531:
2532: /*
2533: * rcs_growbuf()
2534: *
2535: * Attempt to grow the internal parse buffer for the RCS file <rf> by
2536: * RCS_BUFEXTSIZE.
2537: * In case of failure, the original buffer is left unmodified.
2538: */
2539: static void
2540: rcs_growbuf(RCSFILE *rf)
2541: {
2542: struct rcs_pdata *pdp = (struct rcs_pdata *)rf->rf_pdata;
2543:
1.38 ray 2544: pdp->rp_buf = xrealloc(pdp->rp_buf, 1,
2545: pdp->rp_blen + RCS_BUFEXTSIZE);
1.1 joris 2546: pdp->rp_blen += RCS_BUFEXTSIZE;
2547: pdp->rp_bufend = pdp->rp_buf + pdp->rp_blen - 1;
2548: }
2549:
2550: /*
2551: * rcs_strprint()
2552: *
2553: * Output an RCS string <str> of size <slen> to the stream <stream>. Any
2554: * '@' characters are escaped. Otherwise, the string can contain arbitrary
2555: * binary data.
2556: */
2557: static void
2558: rcs_strprint(const u_char *str, size_t slen, FILE *stream)
2559: {
2560: const u_char *ap, *ep, *sp;
2561:
2562: if (slen == 0)
2563: return;
2564:
2565: ep = str + slen - 1;
2566:
2567: for (sp = str; sp <= ep;) {
2568: ap = memchr(sp, '@', ep - sp);
2569: if (ap == NULL)
2570: ap = ep;
2571: (void)fwrite(sp, sizeof(u_char), ap - sp + 1, stream);
2572:
2573: if (*ap == '@')
2574: putc('@', stream);
2575: sp = ap + 1;
2576: }
2577: }
2578:
2579: /*
2580: * rcs_expand_keywords()
2581: *
2582: * Return expansion any RCS keywords in <data>
2583: *
2584: * On error, return NULL.
2585: */
1.12 niallo 2586: static BUF *
2587: rcs_expand_keywords(char *rcsfile, struct rcs_delta *rdp, BUF *bp, int mode)
1.1 joris 2588: {
1.28 ray 2589: BUF *newbuf;
1.1 joris 2590: int kwtype;
2591: u_int j, found;
1.28 ray 2592: u_char *c, *kwstr, *start, *end, *fin;
1.1 joris 2593: char expbuf[256], buf[256];
2594: struct tm tb;
2595: char *fmt;
1.28 ray 2596: size_t len;
1.1 joris 2597:
2598: kwtype = 0;
2599: kwstr = NULL;
2600:
2601: /*
2602: * -z support for RCS
2603: */
2604: tb = rdp->rd_date;
2605: if (timezone_flag != NULL)
2606: rcs_set_tz(timezone_flag, rdp, &tb);
2607:
1.12 niallo 2608: len = rcs_buf_len(bp);
2609:
2610: c = rcs_buf_get(bp);
2611: found = 0;
1.28 ray 2612: /* Final character in buffer. */
2613: fin = c + len - 1;
1.12 niallo 2614:
1.28 ray 2615: /* If no keywords are found, return original buffer. */
2616: newbuf = bp;
1.18 niallo 2617:
1.1 joris 2618: /*
2619: * Keyword formats:
2620: * $Keyword$
2621: * $Keyword: value$
2622: */
1.18 niallo 2623: for (; c < fin; c++) {
1.1 joris 2624: if (*c == '$') {
1.28 ray 2625: BUF *tmpbuf;
2626: size_t clen;
2627:
1.1 joris 2628: /* remember start of this possible keyword */
2629: start = c;
2630:
2631: /* first following character has to be alphanumeric */
2632: c++;
2633: if (!isalpha(*c)) {
2634: c = start;
2635: continue;
2636: }
2637:
1.28 ray 2638: /* Number of characters between c and fin, inclusive. */
2639: clen = fin - c + 1;
2640:
1.1 joris 2641: /* look for any matching keywords */
2642: found = 0;
2643: for (j = 0; j < RCS_NKWORDS; j++) {
1.28 ray 2644: size_t kwlen;
2645:
2646: kwlen = strlen(rcs_expkw[j].kw_str);
2647: /*
2648: * kwlen must be less than clen since clen
2649: * includes either a terminating `$' or a `:'.
2650: */
2651: if (kwlen < clen &&
2652: memcmp(c, rcs_expkw[j].kw_str, kwlen) == 0 &&
2653: (c[kwlen] == '$' || c[kwlen] == ':')) {
1.1 joris 2654: found = 1;
2655: kwstr = rcs_expkw[j].kw_str;
2656: kwtype = rcs_expkw[j].kw_type;
1.28 ray 2657: c += kwlen;
1.1 joris 2658: break;
2659: }
2660: }
2661:
2662: /* unknown keyword, continue looking */
2663: if (found == 0) {
2664: c = start;
2665: continue;
2666: }
2667:
2668: /*
2669: * if the next character was ':' we need to look for
2670: * an '$' before the end of the line to be sure it is
2671: * in fact a keyword.
2672: */
2673: if (*c == ':') {
1.28 ray 2674: for (; c <= fin; ++c) {
1.1 joris 2675: if (*c == '$' || *c == '\n')
2676: break;
2677: }
2678:
2679: if (*c != '$') {
2680: c = start;
2681: continue;
2682: }
2683: }
2684: end = c + 1;
2685:
2686: /* start constructing the expansion */
2687: expbuf[0] = '\0';
2688:
2689: if (mode & RCS_KWEXP_NAME) {
1.31 ray 2690: char *tmp;
2691:
2692: (void)xasprintf(&tmp, "$%s%s", kwstr,
2693: (mode & RCS_KWEXP_VAL) ? ": " : "");
2694: if (strlcat(expbuf, tmp, sizeof(expbuf)) >= sizeof(expbuf))
1.5 ray 2695: errx(1, "rcs_expand_keywords: string truncated");
1.31 ray 2696: xfree(tmp);
1.1 joris 2697: }
2698:
2699: /*
2700: * order matters because of RCS_KW_ID and
2701: * RCS_KW_HEADER here
2702: */
2703: if (mode & RCS_KWEXP_VAL) {
2704: if (kwtype & RCS_KW_RCSFILE) {
1.31 ray 2705: char *tmp;
2706:
2707: (void)xasprintf(&tmp, "%s ",
2708: (kwtype & RCS_KW_FULLPATH) ? rcsfile : basename(rcsfile));
2709: if (strlcat(expbuf, tmp, sizeof(expbuf)) >= sizeof(expbuf))
1.5 ray 2710: errx(1, "rcs_expand_keywords: string truncated");
1.31 ray 2711: xfree(tmp);
1.1 joris 2712: }
2713:
2714: if (kwtype & RCS_KW_REVISION) {
1.31 ray 2715: char *tmp;
2716:
1.5 ray 2717: rcsnum_tostr(rdp->rd_num, buf, sizeof(buf));
1.31 ray 2718: (void)xasprintf(&tmp, "%s ", buf);
2719: if (strlcat(expbuf, tmp, sizeof(expbuf)) >= sizeof(buf))
1.5 ray 2720: errx(1, "rcs_expand_keywords: string truncated");
1.31 ray 2721: xfree(tmp);
1.1 joris 2722: }
2723:
2724: if (kwtype & RCS_KW_DATE) {
2725: if (timezone_flag != NULL)
2726: fmt = "%Y/%m/%d %H:%M:%S%z ";
2727: else
2728: fmt = "%Y/%m/%d %H:%M:%S ";
2729:
2730: strftime(buf, sizeof(buf), fmt, &tb);
1.5 ray 2731: if (strlcat(expbuf, buf, sizeof(expbuf)) >= sizeof(expbuf))
2732: errx(1, "rcs_expand_keywords: string truncated");
1.1 joris 2733: }
2734:
2735: if (kwtype & RCS_KW_AUTHOR) {
1.31 ray 2736: char *tmp;
2737:
2738: (void)xasprintf(&tmp, "%s ", rdp->rd_author);
2739: if (strlcat(expbuf, tmp, sizeof(expbuf)) >= sizeof(expbuf))
1.5 ray 2740: errx(1, "rcs_expand_keywords: string truncated");
1.31 ray 2741: xfree(tmp);
1.1 joris 2742: }
2743:
2744: if (kwtype & RCS_KW_STATE) {
1.31 ray 2745: char *tmp;
2746:
2747: (void)xasprintf(&tmp, "%s ", rdp->rd_state);
2748: if (strlcat(expbuf, tmp, sizeof(expbuf)) >= sizeof(expbuf))
1.5 ray 2749: errx(1, "rcs_expand_keywords: string truncated");
1.31 ray 2750: xfree(tmp);
1.1 joris 2751: }
2752:
2753: /* order does not matter anymore below */
2754: if (kwtype & RCS_KW_LOG)
1.5 ray 2755: if (strlcat(expbuf, " ", sizeof(expbuf)) >= sizeof(expbuf))
2756: errx(1, "rcs_expand_keywords: string truncated");
1.1 joris 2757:
2758: if (kwtype & RCS_KW_SOURCE) {
1.31 ray 2759: char *tmp;
2760:
2761: (void)xasprintf(&tmp, "%s ", rcsfile);
2762: if (strlcat(expbuf, tmp, sizeof(expbuf)) >= sizeof(expbuf))
1.5 ray 2763: errx(1, "rcs_expand_keywords: string truncated");
1.31 ray 2764: xfree(tmp);
1.1 joris 2765: }
2766:
2767: if (kwtype & RCS_KW_NAME)
1.5 ray 2768: if (strlcat(expbuf, " ", sizeof(expbuf)) >= sizeof(expbuf))
2769: errx(1, "rcs_expand_keywords: string truncated");
1.1 joris 2770: }
2771:
2772: /* end the expansion */
2773: if (mode & RCS_KWEXP_NAME)
1.5 ray 2774: if (strlcat(expbuf, "$", sizeof(expbuf)) >= sizeof(expbuf))
2775: errx(1, "rcs_expand_keywords: string truncated");
1.1 joris 2776:
1.28 ray 2777: /* Concatenate everything together. */
2778: tmpbuf = rcs_buf_alloc(len + strlen(expbuf), BUF_AUTOEXT);
2779: /* Append everything before keyword. */
2780: rcs_buf_append(tmpbuf, rcs_buf_get(newbuf),
2781: start - (unsigned char *)rcs_buf_get(newbuf));
2782: /* Append keyword. */
2783: rcs_buf_append(tmpbuf, expbuf, strlen(expbuf));
2784: /* Point c to end of keyword. */
2785: c = rcs_buf_get(tmpbuf) + rcs_buf_len(tmpbuf) - 1;
2786: /* Append everything after keyword. */
2787: rcs_buf_append(tmpbuf, end,
2788: ((unsigned char *)rcs_buf_get(newbuf) + rcs_buf_len(newbuf)) - end);
2789: /* Point fin to end of data. */
2790: fin = rcs_buf_get(tmpbuf) + rcs_buf_len(tmpbuf) - 1;
1.29 ray 2791: /* Recalculate new length. */
2792: len = rcs_buf_len(tmpbuf);
1.28 ray 2793:
2794: /* tmpbuf is now ready, free old newbuf if allocated here. */
2795: if (newbuf != bp)
2796: rcs_buf_free(newbuf);
2797: newbuf = tmpbuf;
1.1 joris 2798: }
2799: }
1.18 niallo 2800:
1.28 ray 2801: return (newbuf);
1.1 joris 2802: }
2803:
2804: /*
2805: * rcs_deltatext_set()
2806: *
2807: * Set deltatext for <rev> in RCS file <rfp> to <dtext>
2808: * Returns -1 on error, 0 on success.
2809: */
2810: int
1.12 niallo 2811: rcs_deltatext_set(RCSFILE *rfp, RCSNUM *rev, BUF *bp)
1.1 joris 2812: {
2813: size_t len;
1.12 niallo 2814: u_char *dtext;
1.1 joris 2815: struct rcs_delta *rdp;
2816:
2817: /* Write operations require full parsing */
2818: rcs_parse_deltatexts(rfp, NULL);
2819:
2820: if ((rdp = rcs_findrev(rfp, rev)) == NULL)
2821: return (-1);
2822:
2823: if (rdp->rd_text != NULL)
2824: xfree(rdp->rd_text);
2825:
1.12 niallo 2826: len = rcs_buf_len(bp);
2827: dtext = rcs_buf_release(bp);
2828: bp = NULL;
1.1 joris 2829: if (len != 0) {
1.12 niallo 2830: rdp->rd_text = xmalloc(len);
1.1 joris 2831: rdp->rd_tlen = len;
1.12 niallo 2832: (void)memcpy(rdp->rd_text, dtext, len);
2833: xfree(dtext);
1.1 joris 2834: } else {
2835: rdp->rd_text = NULL;
2836: rdp->rd_tlen = 0;
2837: }
2838:
2839: return (0);
2840: }
2841:
2842: /*
2843: * rcs_rev_setlog()
2844: *
2845: * Sets the log message of revision <rev> to <logtext>
2846: */
2847: int
2848: rcs_rev_setlog(RCSFILE *rfp, RCSNUM *rev, const char *logtext)
2849: {
2850: struct rcs_delta *rdp;
1.40 xsa 2851: char buf[RCS_REV_BUFSZ];
1.1 joris 2852:
2853: rcsnum_tostr(rev, buf, sizeof(buf));
2854:
2855: if ((rdp = rcs_findrev(rfp, rev)) == NULL)
2856: return (-1);
2857:
2858: if (rdp->rd_log != NULL)
2859: xfree(rdp->rd_log);
2860:
2861: rdp->rd_log = xstrdup(logtext);
2862: rfp->rf_flags &= ~RCS_SYNCED;
2863: return (0);
2864: }
2865: /*
2866: * rcs_rev_getdate()
2867: *
2868: * Get the date corresponding to a given revision.
2869: * Returns the date on success, -1 on failure.
2870: */
2871: time_t
2872: rcs_rev_getdate(RCSFILE *rfp, RCSNUM *rev)
2873: {
2874: struct rcs_delta *rdp;
2875:
2876: if ((rdp = rcs_findrev(rfp, rev)) == NULL)
2877: return (-1);
2878:
2879: return (mktime(&rdp->rd_date));
2880: }
2881:
2882: /*
2883: * rcs_state_set()
2884: *
2885: * Sets the state of revision <rev> to <state>
2886: * NOTE: default state is 'Exp'. States may not contain spaces.
2887: *
2888: * Returns -1 on failure, 0 on success.
2889: */
2890: int
2891: rcs_state_set(RCSFILE *rfp, RCSNUM *rev, const char *state)
2892: {
2893: struct rcs_delta *rdp;
2894:
2895: if ((rdp = rcs_findrev(rfp, rev)) == NULL)
2896: return (-1);
2897:
2898: if (rdp->rd_state != NULL)
2899: xfree(rdp->rd_state);
2900:
2901: rdp->rd_state = xstrdup(state);
2902:
2903: rfp->rf_flags &= ~RCS_SYNCED;
2904:
2905: return (0);
2906: }
2907:
2908: /*
2909: * rcs_state_check()
2910: *
2911: * Check if string <state> is valid.
2912: *
2913: * Returns 0 if the string is valid, -1 otherwise.
2914: */
2915: int
2916: rcs_state_check(const char *state)
2917: {
2918: if (strchr(state, ' ') != NULL)
2919: return (-1);
2920:
2921: return (0);
2922: }
2923:
2924: /*
2925: * rcs_state_get()
2926: *
2927: * Get the state for a given revision of a specified RCSFILE.
2928: *
2929: * Returns NULL on failure.
2930: */
2931: const char *
2932: rcs_state_get(RCSFILE *rfp, RCSNUM *rev)
2933: {
2934: struct rcs_delta *rdp;
2935:
2936: if ((rdp = rcs_findrev(rfp, rev)) == NULL)
2937: return (NULL);
2938:
2939: return (rdp->rd_state);
2940: }
2941:
2942: /*
2943: * rcs_kwexp_buf()
2944: *
2945: * Do keyword expansion on a buffer if necessary
2946: *
2947: */
2948: BUF *
2949: rcs_kwexp_buf(BUF *bp, RCSFILE *rf, RCSNUM *rev)
2950: {
2951: struct rcs_delta *rdp;
2952: int expmode;
2953:
2954: /*
2955: * Do keyword expansion if required.
2956: */
2957: if (rf->rf_expand != NULL)
2958: expmode = rcs_kwexp_get(rf);
2959: else
2960: expmode = RCS_KWEXP_DEFAULT;
2961:
2962: if (!(expmode & RCS_KWEXP_NONE)) {
2963: if ((rdp = rcs_findrev(rf, rev)) == NULL)
1.5 ray 2964: errx(1, "could not fetch revision");
1.12 niallo 2965: return (rcs_expand_keywords(rf->rf_path, rdp, bp, expmode));
1.1 joris 2966: }
2967: return (bp);
2968: }