Annotation of src/usr.bin/cvs/rcs.c, Revision 1.54
1.54 ! jfb 1: /* $OpenBSD: rcs.c,v 1.53 2005/05/25 21:32:31 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:
1.52 jfb 31: #include <pwd.h>
1.1 jfb 32: #include <errno.h>
33: #include <stdio.h>
34: #include <ctype.h>
1.52 jfb 35: #include <unistd.h>
1.1 jfb 36: #include <stdlib.h>
1.26 jfb 37: #include <stdarg.h>
1.1 jfb 38: #include <string.h>
39:
40: #include "rcs.h"
41: #include "log.h"
1.39 joris 42: #include "strtab.h"
1.1 jfb 43:
1.26 jfb 44: #define RCS_BUFSIZE 16384
1.18 jfb 45: #define RCS_BUFEXTSIZE 8192
1.1 jfb 46:
47:
48: /* RCS token types */
49: #define RCS_TOK_ERR -1
50: #define RCS_TOK_EOF 0
51: #define RCS_TOK_NUM 1
52: #define RCS_TOK_ID 2
53: #define RCS_TOK_STRING 3
54: #define RCS_TOK_SCOLON 4
55: #define RCS_TOK_COLON 5
56:
57:
58: #define RCS_TOK_HEAD 8
59: #define RCS_TOK_BRANCH 9
60: #define RCS_TOK_ACCESS 10
61: #define RCS_TOK_SYMBOLS 11
62: #define RCS_TOK_LOCKS 12
63: #define RCS_TOK_COMMENT 13
64: #define RCS_TOK_EXPAND 14
65: #define RCS_TOK_DATE 15
66: #define RCS_TOK_AUTHOR 16
67: #define RCS_TOK_STATE 17
68: #define RCS_TOK_NEXT 18
69: #define RCS_TOK_BRANCHES 19
70: #define RCS_TOK_DESC 20
71: #define RCS_TOK_LOG 21
72: #define RCS_TOK_TEXT 22
73: #define RCS_TOK_STRICT 23
74:
75: #define RCS_ISKEY(t) (((t) >= RCS_TOK_HEAD) && ((t) <= RCS_TOK_BRANCHES))
76:
77:
78: #define RCS_NOSCOL 0x01 /* no terminating semi-colon */
79: #define RCS_VOPT 0x02 /* value is optional */
80:
81:
82: /* opaque parse data */
83: struct rcs_pdata {
1.18 jfb 84: u_int rp_lines;
1.1 jfb 85:
86: char *rp_buf;
87: size_t rp_blen;
1.18 jfb 88: char *rp_bufend;
1.42 jfb 89: size_t rp_tlen;
1.1 jfb 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:
99: struct rcs_line {
100: char *rl_line;
101: int rl_lineno;
102: TAILQ_ENTRY(rcs_line) rl_list;
103: };
1.5 vincent 104: TAILQ_HEAD(rcs_tqh, rcs_line);
1.1 jfb 105:
106: struct rcs_foo {
107: int rl_nblines;
108: char *rl_data;
1.5 vincent 109: struct rcs_tqh rl_lines;
1.1 jfb 110: };
111:
112: #define RCS_TOKSTR(rfp) ((struct rcs_pdata *)rfp->rf_pdata)->rp_buf
1.42 jfb 113: #define RCS_TOKLEN(rfp) ((struct rcs_pdata *)rfp->rf_pdata)->rp_tlen
1.1 jfb 114:
115:
1.47 jfb 116:
117: /* invalid characters in RCS symbol names */
1.49 jfb 118: static const char rcs_sym_invch[] = RCS_SYM_INVALCHAR;
1.47 jfb 119:
1.51 jfb 120:
121: /* comment leaders, depending on the file's suffix */
122: static const struct rcs_comment {
123: const char *rc_suffix;
124: const char *rc_cstr;
125: } rcs_comments[] = {
126: { "1", ".\\\" " },
127: { "2", ".\\\" " },
128: { "3", ".\\\" " },
129: { "4", ".\\\" " },
130: { "5", ".\\\" " },
131: { "6", ".\\\" " },
132: { "7", ".\\\" " },
133: { "8", ".\\\" " },
134: { "9", ".\\\" " },
135: { "a", "-- " }, /* Ada */
136: { "ada", "-- " },
137: { "adb", "-- " },
138: { "asm", ";; " }, /* assembler (MS-DOS) */
139: { "ads", "-- " }, /* Ada */
140: { "bat", ":: " }, /* batch (MS-DOS) */
141: { "body", "-- " }, /* Ada */
142: { "c", " * " }, /* C */
143: { "c++", "// " }, /* C++ */
144: { "cc", "// " },
145: { "cpp", "// " },
146: { "cxx", "// " },
147: { "m", "// " }, /* Objective-C */
148: { "cl", ";;; " }, /* Common Lisp */
149: { "cmd", ":: " }, /* command (OS/2) */
150: { "cmf", "c " }, /* CM Fortran */
151: { "csh", "# " }, /* shell */
152: { "e", "# " }, /* efl */
153: { "epsf", "% " }, /* encapsulated postscript */
154: { "epsi", "% " }, /* encapsulated postscript */
155: { "el", "; " }, /* Emacs Lisp */
156: { "f", "c " }, /* Fortran */
157: { "for", "c " },
158: { "h", " * " }, /* C-header */
159: { "hh", "// " }, /* C++ header */
160: { "hpp", "// " },
161: { "hxx", "// " },
162: { "in", "# " }, /* for Makefile.in */
163: { "l", " * " }, /* lex */
164: { "mac", ";; " }, /* macro (DEC-10, MS-DOS, PDP-11, VMS, etc) */
165: { "mak", "# " }, /* makefile, e.g. Visual C++ */
166: { "me", ".\\\" " }, /* me-macros t/nroff */
167: { "ml", "; " }, /* mocklisp */
168: { "mm", ".\\\" " }, /* mm-macros t/nroff */
169: { "ms", ".\\\" " }, /* ms-macros t/nroff */
170: { "man", ".\\\" " }, /* man-macros t/nroff */
171: { "p", " * " }, /* pascal */
172: { "pas", " * " },
1.52 jfb 173: { "pl", "# " }, /* Perl (conflict with Prolog) */
174: { "pm", "# " }, /* Perl module */
1.51 jfb 175: { "ps", "% " }, /* postscript */
176: { "psw", "% " }, /* postscript wrap */
177: { "pswm", "% " }, /* postscript wrap */
178: { "r", "# " }, /* ratfor */
179: { "rc", " * " }, /* Microsoft Windows resource file */
180: { "red", "% " }, /* psl/rlisp */
181: { "sh", "# " }, /* shell */
182: { "sl", "% " }, /* psl */
183: { "spec", "-- " }, /* Ada */
184: { "tex", "% " }, /* tex */
185: { "y", " * " }, /* yacc */
186: { "ye", " * " }, /* yacc-efl */
187: { "yr", " * " }, /* yacc-ratfor */
188: };
189:
190: #define NB_COMTYPES (sizeof(rcs_comments)/sizeof(rcs_comments[0]))
191:
1.33 jfb 192: #ifdef notyet
1.20 jfb 193: static struct rcs_kfl {
194: char rk_char;
195: int rk_val;
196: } rcs_kflags[] = {
197: { 'k', RCS_KWEXP_NAME },
198: { 'v', RCS_KWEXP_VAL },
199: { 'l', RCS_KWEXP_LKR },
200: { 'o', RCS_KWEXP_OLD },
201: { 'b', RCS_KWEXP_NONE },
202: };
1.33 jfb 203: #endif
1.20 jfb 204:
1.1 jfb 205: static struct rcs_key {
206: char rk_str[16];
207: int rk_id;
208: int rk_val;
209: int rk_flags;
210: } rcs_keys[] = {
211: { "access", RCS_TOK_ACCESS, RCS_TOK_ID, RCS_VOPT },
1.41 jfb 212: { "author", RCS_TOK_AUTHOR, RCS_TOK_ID, 0 },
1.1 jfb 213: { "branch", RCS_TOK_BRANCH, RCS_TOK_NUM, RCS_VOPT },
214: { "branches", RCS_TOK_BRANCHES, RCS_TOK_NUM, RCS_VOPT },
215: { "comment", RCS_TOK_COMMENT, RCS_TOK_STRING, RCS_VOPT },
216: { "date", RCS_TOK_DATE, RCS_TOK_NUM, 0 },
217: { "desc", RCS_TOK_DESC, RCS_TOK_STRING, RCS_NOSCOL },
218: { "expand", RCS_TOK_EXPAND, RCS_TOK_STRING, RCS_VOPT },
219: { "head", RCS_TOK_HEAD, RCS_TOK_NUM, RCS_VOPT },
220: { "locks", RCS_TOK_LOCKS, RCS_TOK_ID, 0 },
221: { "log", RCS_TOK_LOG, RCS_TOK_STRING, RCS_NOSCOL },
222: { "next", RCS_TOK_NEXT, RCS_TOK_NUM, RCS_VOPT },
1.41 jfb 223: { "state", RCS_TOK_STATE, RCS_TOK_ID, RCS_VOPT },
1.1 jfb 224: { "strict", RCS_TOK_STRICT, 0, 0, },
225: { "symbols", RCS_TOK_SYMBOLS, 0, 0 },
226: { "text", RCS_TOK_TEXT, RCS_TOK_STRING, RCS_NOSCOL },
227: };
228:
1.18 jfb 229: #define RCS_NKEYS (sizeof(rcs_keys)/sizeof(rcs_keys[0]))
1.1 jfb 230:
1.33 jfb 231: #ifdef notyet
232: /*
233: * Keyword expansion table
234: */
235: static struct rcs_kw {
236: char kw_str[16];
237: } rcs_expkw[] = {
238: { "Author" },
239: { "Date" },
240: { "Header" },
241: { "Id" },
242: { "Log" },
243: { "Name" },
244: { "RCSfile" },
245: { "Revision" },
246: { "Source" },
247: { "State" }
248: };
249: #endif
250:
1.32 jfb 251: static const char *rcs_errstrs[] = {
252: "No error",
253: "No such entry",
254: "Duplicate entry found",
255: "Bad RCS number",
1.48 jfb 256: "Invalid RCS symbol",
257: "Parse error",
1.32 jfb 258: };
259:
260: #define RCS_NERR (sizeof(rcs_errstrs)/sizeof(rcs_errstrs[0]))
261:
262:
263: int rcs_errno = RCS_ERR_NOERR;
264:
1.1 jfb 265:
1.27 jfb 266: static int rcs_write (RCSFILE *);
1.26 jfb 267: static int rcs_parse (RCSFILE *);
268: static int rcs_parse_admin (RCSFILE *);
269: static int rcs_parse_delta (RCSFILE *);
270: static int rcs_parse_deltatext (RCSFILE *);
271:
272: static int rcs_parse_access (RCSFILE *);
273: static int rcs_parse_symbols (RCSFILE *);
274: static int rcs_parse_locks (RCSFILE *);
275: static int rcs_parse_branches (RCSFILE *, struct rcs_delta *);
276: static void rcs_freedelta (struct rcs_delta *);
277: static void rcs_freepdata (struct rcs_pdata *);
278: static int rcs_gettok (RCSFILE *);
279: static int rcs_pushtok (RCSFILE *, const char *, int);
280: static int rcs_growbuf (RCSFILE *);
281: static int rcs_patch_lines (struct rcs_foo *, struct rcs_foo *);
1.42 jfb 282: static int rcs_strprint (const u_char *, size_t, FILE *);
1.26 jfb 283:
1.43 jfb 284: static struct rcs_delta* rcs_findrev (RCSFILE *, const RCSNUM *);
1.26 jfb 285: static struct rcs_foo* rcs_splitlines (const char *);
286: static void rcs_freefoo (struct rcs_foo *);
287:
288:
1.1 jfb 289: /*
290: * rcs_open()
291: *
292: * Open a file containing RCS-formatted information. The file's path is
1.26 jfb 293: * given in <path>, and the opening flags are given in <flags>, which is either
294: * RCS_READ, RCS_WRITE, or RCS_RDWR. If the open requests write access and
295: * the file does not exist, the RCS_CREATE flag must also be given, in which
296: * case it will be created with the mode specified in a third argument of
297: * type mode_t. If the file exists and RCS_CREATE is passed, the open will
298: * fail.
1.1 jfb 299: * Returns a handle to the opened file on success, or NULL on failure.
300: */
301: RCSFILE*
1.26 jfb 302: rcs_open(const char *path, int flags, ...)
1.1 jfb 303: {
1.26 jfb 304: int ret;
305: mode_t fmode;
1.1 jfb 306: RCSFILE *rfp;
307: struct stat st;
1.26 jfb 308: va_list vap;
309:
310: fmode = 0;
311: flags &= 0xffff; /* ditch any internal flags */
1.1 jfb 312:
1.26 jfb 313: if (((ret = stat(path, &st)) == -1) && (errno == ENOENT)) {
314: if (flags & RCS_CREATE) {
315: va_start(vap, flags);
316: fmode = va_arg(vap, mode_t);
317: va_end(vap);
318: } else {
1.50 jfb 319: rcs_errno = RCS_ERR_ERRNO;
1.26 jfb 320: cvs_log(LP_ERR, "RCS file `%s' does not exist", path);
321: return (NULL);
322: }
323: } else if ((ret == 0) && (flags & RCS_CREATE)) {
324: cvs_log(LP_ERR, "RCS file `%s' exists", path);
1.1 jfb 325: return (NULL);
326: }
327:
1.26 jfb 328: if ((rfp = (RCSFILE *)malloc(sizeof(*rfp))) == NULL) {
1.1 jfb 329: cvs_log(LP_ERRNO, "failed to allocate RCS file structure");
1.50 jfb 330: rcs_errno = RCS_ERR_ERRNO;
1.1 jfb 331: return (NULL);
332: }
333: memset(rfp, 0, sizeof(*rfp));
334:
1.26 jfb 335: if ((rfp->rf_path = strdup(path)) == NULL) {
1.50 jfb 336: rcs_errno = RCS_ERR_ERRNO;
1.1 jfb 337: cvs_log(LP_ERRNO, "failed to duplicate RCS file path");
1.26 jfb 338: free(rfp);
1.1 jfb 339: return (NULL);
340: }
341:
342: rfp->rf_ref = 1;
1.26 jfb 343: rfp->rf_flags = flags | RCS_SLOCK;
344: rfp->rf_mode = fmode;
1.1 jfb 345:
346: TAILQ_INIT(&(rfp->rf_delta));
1.29 jfb 347: TAILQ_INIT(&(rfp->rf_access));
1.1 jfb 348: TAILQ_INIT(&(rfp->rf_symbols));
349: TAILQ_INIT(&(rfp->rf_locks));
350:
1.26 jfb 351: if (rfp->rf_flags & RCS_CREATE) {
352: } else if (rcs_parse(rfp) < 0) {
1.1 jfb 353: rcs_close(rfp);
354: return (NULL);
355: }
356:
357: return (rfp);
358: }
359:
360: /*
361: * rcs_close()
362: *
363: * Close an RCS file handle.
364: */
365: void
366: rcs_close(RCSFILE *rfp)
367: {
368: struct rcs_delta *rdp;
1.13 jfb 369: struct rcs_lock *rlp;
370: struct rcs_sym *rsp;
1.1 jfb 371:
372: if (rfp->rf_ref > 1) {
373: rfp->rf_ref--;
374: return;
375: }
376:
1.26 jfb 377: if ((rfp->rf_flags & RCS_WRITE) && !(rfp->rf_flags & RCS_SYNCED))
378: rcs_write(rfp);
379:
1.1 jfb 380: while (!TAILQ_EMPTY(&(rfp->rf_delta))) {
381: rdp = TAILQ_FIRST(&(rfp->rf_delta));
382: TAILQ_REMOVE(&(rfp->rf_delta), rdp, rd_list);
383: rcs_freedelta(rdp);
384: }
385:
1.13 jfb 386: while (!TAILQ_EMPTY(&(rfp->rf_symbols))) {
387: rsp = TAILQ_FIRST(&(rfp->rf_symbols));
388: TAILQ_REMOVE(&(rfp->rf_symbols), rsp, rs_list);
389: rcsnum_free(rsp->rs_num);
1.39 joris 390: cvs_strfree(rsp->rs_name);
1.13 jfb 391: free(rsp);
392: }
393:
394: while (!TAILQ_EMPTY(&(rfp->rf_locks))) {
395: rlp = TAILQ_FIRST(&(rfp->rf_locks));
396: TAILQ_REMOVE(&(rfp->rf_locks), rlp, rl_list);
397: rcsnum_free(rlp->rl_num);
398: free(rlp);
399: }
400:
1.1 jfb 401: if (rfp->rf_head != NULL)
402: rcsnum_free(rfp->rf_head);
1.11 joris 403: if (rfp->rf_branch != NULL)
404: rcsnum_free(rfp->rf_branch);
1.1 jfb 405:
406: if (rfp->rf_path != NULL)
407: free(rfp->rf_path);
408: if (rfp->rf_comment != NULL)
1.39 joris 409: cvs_strfree(rfp->rf_comment);
1.1 jfb 410: if (rfp->rf_expand != NULL)
1.39 joris 411: cvs_strfree(rfp->rf_expand);
1.1 jfb 412: if (rfp->rf_desc != NULL)
1.39 joris 413: cvs_strfree(rfp->rf_desc);
1.1 jfb 414: free(rfp);
415: }
416:
417: /*
418: * rcs_write()
419: *
420: * Write the contents of the RCS file handle <rfp> to disk in the file whose
421: * path is in <rf_path>.
422: * Returns 0 on success, or -1 on failure.
423: */
1.27 jfb 424: static int
1.1 jfb 425: rcs_write(RCSFILE *rfp)
426: {
427: FILE *fp;
1.42 jfb 428: char buf[1024], numbuf[64];
1.29 jfb 429: struct rcs_access *ap;
1.1 jfb 430: struct rcs_sym *symp;
1.46 jfb 431: struct rcs_branch *brp;
1.1 jfb 432: struct rcs_delta *rdp;
433:
1.28 jfb 434: if (rfp->rf_flags & RCS_SYNCED)
1.1 jfb 435: return (0);
436:
1.29 jfb 437: if ((fp = fopen(rfp->rf_path, "w")) == NULL) {
1.50 jfb 438: rcs_errno = RCS_ERR_ERRNO;
1.1 jfb 439: cvs_log(LP_ERRNO, "failed to open RCS output file `%s'",
440: rfp->rf_path);
441: return (-1);
442: }
443:
1.28 jfb 444: if (rfp->rf_head != NULL)
445: rcsnum_tostr(rfp->rf_head, numbuf, sizeof(numbuf));
446: else
447: numbuf[0] = '\0';
448:
1.1 jfb 449: fprintf(fp, "head\t%s;\n", numbuf);
1.35 jfb 450:
451: if (rfp->rf_branch != NULL) {
452: rcsnum_tostr(rfp->rf_branch, numbuf, sizeof(numbuf));
453: fprintf(fp, "branch\t%s;\n", numbuf);
454: }
455:
1.29 jfb 456: fputs("access", fp);
457: TAILQ_FOREACH(ap, &(rfp->rf_access), ra_list) {
458: fprintf(fp, "\n\t%s", ap->ra_name);
459: }
460: fputs(";\n", fp);
1.1 jfb 461:
462: fprintf(fp, "symbols\n");
463: TAILQ_FOREACH(symp, &(rfp->rf_symbols), rs_list) {
464: rcsnum_tostr(symp->rs_num, numbuf, sizeof(numbuf));
465: snprintf(buf, sizeof(buf), "%s:%s", symp->rs_name, numbuf);
466: fprintf(fp, "\t%s", buf);
467: if (symp != TAILQ_LAST(&(rfp->rf_symbols), rcs_slist))
468: fputc('\n', fp);
469: }
470: fprintf(fp, ";\n");
471:
472: fprintf(fp, "locks;");
473:
1.26 jfb 474: if (rfp->rf_flags & RCS_SLOCK)
1.1 jfb 475: fprintf(fp, " strict;");
476: fputc('\n', fp);
477:
1.42 jfb 478: if (rfp->rf_comment != NULL) {
479: fputs("comment\t@", fp);
480: rcs_strprint(rfp->rf_comment, strlen(rfp->rf_comment), fp);
481: fputs("@;\n", fp);
482: }
1.1 jfb 483:
1.42 jfb 484: if (rfp->rf_expand != NULL) {
485: fputs("expand @", fp);
486: rcs_strprint(rfp->rf_expand, strlen(rfp->rf_expand), fp);
487: fputs("@;\n", fp);
488: }
1.1 jfb 489:
1.46 jfb 490: fputs("\n\n", fp);
1.1 jfb 491:
492: TAILQ_FOREACH(rdp, &(rfp->rf_delta), rd_list) {
493: fprintf(fp, "%s\n", rcsnum_tostr(rdp->rd_num, numbuf,
494: sizeof(numbuf)));
495: fprintf(fp, "date\t%d.%02d.%02d.%02d.%02d.%02d;",
1.44 jfb 496: rdp->rd_date.tm_year + 1900, rdp->rd_date.tm_mon + 1,
1.1 jfb 497: rdp->rd_date.tm_mday, rdp->rd_date.tm_hour,
498: rdp->rd_date.tm_min, rdp->rd_date.tm_sec);
499: fprintf(fp, "\tauthor %s;\tstate %s;\n",
500: rdp->rd_author, rdp->rd_state);
1.46 jfb 501: fputs("branches", fp);
502: TAILQ_FOREACH(brp, &(rdp->rd_branches), rb_list) {
503: fprintf(fp, " %s", rcsnum_tostr(brp->rb_num, numbuf,
504: sizeof(numbuf)));
505: }
506: fputs(";\n", fp);
1.1 jfb 507: fprintf(fp, "next\t%s;\n\n", rcsnum_tostr(rdp->rd_next,
508: numbuf, sizeof(numbuf)));
509: }
510:
1.42 jfb 511: fputs("\ndesc\n@", fp);
512: if (rfp->rf_desc != NULL)
513: rcs_strprint(rfp->rf_desc, strlen(rfp->rf_desc), fp);
514: fputs("@\n\n", fp);
1.1 jfb 515:
516: /* deltatexts */
517: TAILQ_FOREACH(rdp, &(rfp->rf_delta), rd_list) {
518: fprintf(fp, "\n%s\n", rcsnum_tostr(rdp->rd_num, numbuf,
519: sizeof(numbuf)));
1.42 jfb 520: fputs("log\n@", fp);
521: rcs_strprint(rdp->rd_log, strlen(rdp->rd_log), fp);
522: fputs("@\ntext\n@", fp);
523: rcs_strprint(rdp->rd_text, rdp->rd_tlen, fp);
524: fputs("@\n\n", fp);
1.1 jfb 525: }
526: fclose(fp);
527:
1.26 jfb 528: rfp->rf_flags |= RCS_SYNCED;
1.1 jfb 529:
530: return (0);
531: }
532:
533: /*
1.43 jfb 534: * rcs_head_get()
535: *
536: * Retrieve the revision number of the head revision for the RCS file <file>.
537: */
538: const RCSNUM*
539: rcs_head_get(RCSFILE *file)
540: {
541: return (file->rf_head);
542: }
543:
544: /*
545: * rcs_head_set()
546: *
547: * Set the revision number of the head revision for the RCS file <file> to
548: * <rev>, which must reference a valid revision within the file.
549: */
550: int
551: rcs_head_set(RCSFILE *file, const RCSNUM *rev)
552: {
553: struct rcs_delta *rd;
554:
555: if ((rd = rcs_findrev(file, rev)) == NULL)
556: return (-1);
557:
1.52 jfb 558: if ((file->rf_head == NULL) &&
559: ((file->rf_head = rcsnum_alloc()) == NULL))
560: return (-1);
561:
1.43 jfb 562: if (rcsnum_cpy(rev, file->rf_head, 0) < 0)
563: return (-1);
564:
565: return (0);
566: }
567:
568:
569: /*
1.35 jfb 570: * rcs_branch_get()
571: *
572: * Retrieve the default branch number for the RCS file <file>.
573: * Returns the number on success. If NULL is returned, then there is no
574: * default branch for this file.
575: */
576: const RCSNUM*
577: rcs_branch_get(RCSFILE *file)
578: {
579: return (file->rf_branch);
580: }
581:
582: /*
583: * rcs_branch_set()
584: *
585: * Set the default branch for the RCS file <file> to <bnum>.
586: * Returns 0 on success, -1 on failure.
587: */
588: int
589: rcs_branch_set(RCSFILE *file, const RCSNUM *bnum)
590: {
591: if ((file->rf_branch == NULL) &&
592: ((file->rf_branch = rcsnum_alloc()) == NULL))
593: return (-1);
594:
595: if (rcsnum_cpy(bnum, file->rf_branch, 0) < 0) {
596: rcsnum_free(file->rf_branch);
597: file->rf_branch = NULL;
598: return (-1);
599: }
600:
601: return (0);
602: }
603:
604: /*
1.29 jfb 605: * rcs_access_add()
606: *
607: * Add the login name <login> to the access list for the RCS file <file>.
608: * Returns 0 on success, or -1 on failure.
609: */
610: int
611: rcs_access_add(RCSFILE *file, const char *login)
612: {
613: struct rcs_access *ap;
614:
615: /* first look for duplication */
616: TAILQ_FOREACH(ap, &(file->rf_access), ra_list) {
617: if (strcmp(ap->ra_name, login) == 0) {
1.32 jfb 618: rcs_errno = RCS_ERR_DUPENT;
1.29 jfb 619: return (-1);
620: }
621: }
622:
623: ap = (struct rcs_access *)malloc(sizeof(*ap));
624: if (ap == NULL) {
1.50 jfb 625: rcs_errno = RCS_ERR_ERRNO;
1.29 jfb 626: cvs_log(LP_ERRNO, "failed to allocate RCS access entry");
627: return (-1);
628: }
629:
1.39 joris 630: ap->ra_name = cvs_strdup(login);
1.29 jfb 631: if (ap->ra_name == NULL) {
632: cvs_log(LP_ERRNO, "failed to duplicate user name");
633: free(ap);
634: return (-1);
635: }
636:
637: TAILQ_INSERT_TAIL(&(file->rf_access), ap, ra_list);
638:
639: /* not synced anymore */
640: file->rf_flags &= ~RCS_SYNCED;
641: return (0);
642: }
643:
644: /*
645: * rcs_access_remove()
646: *
647: * Remove an entry with login name <login> from the access list of the RCS
648: * file <file>.
649: * Returns 0 on success, or -1 on failure.
650: */
651: int
652: rcs_access_remove(RCSFILE *file, const char *login)
653: {
654: struct rcs_access *ap;
655:
656: TAILQ_FOREACH(ap, &(file->rf_access), ra_list)
657: if (strcmp(ap->ra_name, login) == 0)
658: break;
659:
660: if (ap == NULL) {
1.32 jfb 661: rcs_errno = RCS_ERR_NOENT;
1.29 jfb 662: return (-1);
663: }
664:
665: TAILQ_REMOVE(&(file->rf_access), ap, ra_list);
1.39 joris 666: cvs_strfree(ap->ra_name);
1.29 jfb 667: free(ap);
668:
669: /* not synced anymore */
670: file->rf_flags &= ~RCS_SYNCED;
671: return (0);
672: }
673:
674: /*
1.26 jfb 675: * rcs_sym_add()
1.1 jfb 676: *
677: * Add a symbol to the list of symbols for the RCS file <rfp>. The new symbol
678: * is named <sym> and is bound to the RCS revision <snum>.
679: * Returns 0 on success, or -1 on failure.
680: */
681: int
1.26 jfb 682: rcs_sym_add(RCSFILE *rfp, const char *sym, RCSNUM *snum)
1.1 jfb 683: {
684: struct rcs_sym *symp;
685:
1.47 jfb 686: if (!rcs_sym_check(sym)) {
687: rcs_errno = RCS_ERR_BADSYM;
688: return (NULL);
689: }
690:
1.1 jfb 691: /* first look for duplication */
692: TAILQ_FOREACH(symp, &(rfp->rf_symbols), rs_list) {
693: if (strcmp(symp->rs_name, sym) == 0) {
1.32 jfb 694: rcs_errno = RCS_ERR_DUPENT;
1.1 jfb 695: return (-1);
696: }
697: }
698:
1.50 jfb 699: if ((symp = (struct rcs_sym *)malloc(sizeof(*symp))) == NULL) {
700: rcs_errno = RCS_ERR_ERRNO;
1.1 jfb 701: cvs_log(LP_ERRNO, "failed to allocate RCS symbol");
702: return (-1);
703: }
704:
1.50 jfb 705: if ((symp->rs_name = cvs_strdup(sym)) == NULL) {
706: rcs_errno = RCS_ERR_ERRNO;
1.10 joris 707: cvs_log(LP_ERRNO, "failed to duplicate symbol");
708: free(symp);
709: return (-1);
710: }
711:
1.50 jfb 712: if ((symp->rs_num = rcsnum_alloc()) == NULL) {
1.39 joris 713: cvs_strfree(symp->rs_name);
1.11 joris 714: free(symp);
715: return (-1);
716: }
1.1 jfb 717: rcsnum_cpy(snum, symp->rs_num, 0);
718:
719: TAILQ_INSERT_HEAD(&(rfp->rf_symbols), symp, rs_list);
720:
721: /* not synced anymore */
1.26 jfb 722: rfp->rf_flags &= ~RCS_SYNCED;
1.1 jfb 723: return (0);
724: }
725:
726: /*
1.27 jfb 727: * rcs_sym_remove()
728: *
729: * Remove the symbol with name <sym> from the symbol list for the RCS file
730: * <file>. If no such symbol is found, the call fails and returns with an
731: * error.
732: * Returns 0 on success, or -1 on failure.
733: */
734: int
735: rcs_sym_remove(RCSFILE *file, const char *sym)
736: {
737: struct rcs_sym *symp;
738:
1.47 jfb 739: if (!rcs_sym_check(sym)) {
740: rcs_errno = RCS_ERR_BADSYM;
741: return (NULL);
742: }
743:
1.27 jfb 744: TAILQ_FOREACH(symp, &(file->rf_symbols), rs_list)
745: if (strcmp(symp->rs_name, sym) == 0)
746: break;
747:
748: if (symp == NULL) {
1.32 jfb 749: rcs_errno = RCS_ERR_NOENT;
1.27 jfb 750: return (-1);
751: }
752:
753: TAILQ_REMOVE(&(file->rf_symbols), symp, rs_list);
1.39 joris 754: cvs_strfree(symp->rs_name);
1.27 jfb 755: rcsnum_free(symp->rs_num);
756: free(symp);
757:
758: /* not synced anymore */
759: file->rf_flags &= ~RCS_SYNCED;
760: return (0);
761: }
762:
763: /*
764: * rcs_sym_getrev()
765: *
766: * Retrieve the RCS revision number associated with the symbol <sym> for the
767: * RCS file <file>. The returned value is a dynamically-allocated copy and
768: * should be freed by the caller once they are done with it.
769: * Returns the RCSNUM on success, or NULL on failure.
770: */
771: RCSNUM*
772: rcs_sym_getrev(RCSFILE *file, const char *sym)
773: {
774: RCSNUM *num;
775: struct rcs_sym *symp;
776:
1.47 jfb 777: if (!rcs_sym_check(sym)) {
778: rcs_errno = RCS_ERR_BADSYM;
779: return (NULL);
780: }
781:
1.27 jfb 782: num = NULL;
783: TAILQ_FOREACH(symp, &(file->rf_symbols), rs_list)
784: if (strcmp(symp->rs_name, sym) == 0)
785: break;
786:
1.36 jfb 787: if (symp == NULL)
788: rcs_errno = RCS_ERR_NOENT;
789: else if (((num = rcsnum_alloc()) != NULL) &&
1.27 jfb 790: (rcsnum_cpy(symp->rs_num, num, 0) < 0)) {
791: rcsnum_free(num);
792: num = NULL;
793: }
794:
795: return (num);
1.47 jfb 796: }
797:
798: /*
799: * rcs_sym_check()
800: *
801: * Check the RCS symbol name <sym> for any unsupported characters.
802: * Returns 1 if the tag is correct, 0 if it isn't valid.
803: */
804: int
805: rcs_sym_check(const char *sym)
806: {
807: int ret;
808: const char *cp;
809:
810: ret = 1;
811: cp = sym;
812: if (!isalpha(*cp++))
813: return (0);
814:
815: for (; *cp != '\0'; cp++)
816: if (!isgraph(*cp) || (strchr(rcs_sym_invch, *cp) != NULL)) {
817: ret = 0;
818: break;
819: }
820:
821: return (ret);
1.30 jfb 822: }
823:
824: /*
825: * rcs_lock_getmode()
826: *
827: * Retrieve the locking mode of the RCS file <file>.
828: */
829: int
830: rcs_lock_getmode(RCSFILE *file)
831: {
832: return (file->rf_flags & RCS_SLOCK) ? RCS_LOCK_STRICT : RCS_LOCK_LOOSE;
833: }
834:
835: /*
836: * rcs_lock_setmode()
837: *
838: * Set the locking mode of the RCS file <file> to <mode>, which must either
839: * be RCS_LOCK_LOOSE or RCS_LOCK_STRICT.
840: * Returns the previous mode on success, or -1 on failure.
841: */
842: int
843: rcs_lock_setmode(RCSFILE *file, int mode)
844: {
845: int pmode;
846: pmode = rcs_lock_getmode(file);
847:
848: if (mode == RCS_LOCK_STRICT)
849: file->rf_flags |= RCS_SLOCK;
850: else if (mode == RCS_LOCK_LOOSE)
851: file->rf_flags &= ~RCS_SLOCK;
852: else {
853: cvs_log(LP_ERRNO, "invalid lock mode %d", mode);
854: return (-1);
855: }
856:
857: return (pmode);
1.27 jfb 858: }
859:
860: /*
1.40 jfb 861: * rcs_lock_add()
862: *
863: * Add an RCS lock for the user <user> on revision <rev>.
864: * Returns 0 on success, or -1 on failure.
865: */
866: int
867: rcs_lock_add(RCSFILE *file, const char *user, RCSNUM *rev)
868: {
869: struct rcs_lock *lkp;
870:
871: /* first look for duplication */
872: TAILQ_FOREACH(lkp, &(file->rf_locks), rl_list) {
873: if (strcmp(lkp->rl_name, user) == 0) {
874: rcs_errno = RCS_ERR_DUPENT;
875: return (-1);
876: }
877: }
878:
1.50 jfb 879: if ((lkp = (struct rcs_lock *)malloc(sizeof(*lkp))) == NULL) {
880: rcs_errno = RCS_ERR_ERRNO;
1.40 jfb 881: cvs_log(LP_ERRNO, "failed to allocate RCS lock");
882: return (-1);
883: }
884:
885: lkp->rl_name = cvs_strdup(user);
886: if (lkp->rl_name == NULL) {
887: cvs_log(LP_ERRNO, "failed to duplicate user name");
888: free(lkp);
889: return (-1);
890: }
891:
892: TAILQ_INSERT_TAIL(&(file->rf_locks), lkp, rl_list);
893:
894: /* not synced anymore */
895: file->rf_flags &= ~RCS_SYNCED;
896: return (0);
897:
898:
899: }
900:
901:
902: /*
903: * rcs_lock_remove()
904: *
905: * Remove the RCS lock on revision <rev>.
906: * Returns 0 on success, or -1 on failure.
907: */
908: int
909: rcs_lock_remove(RCSFILE *file, const RCSNUM *rev)
910: {
911: struct rcs_lock *lkp;
912:
913: TAILQ_FOREACH(lkp, &(file->rf_locks), rl_list)
914: if (rcsnum_cmp(lkp->rl_num, rev, 0) == 0)
915: break;
916:
917: if (lkp == NULL) {
918: rcs_errno = RCS_ERR_NOENT;
919: return (-1);
920: }
921:
922: TAILQ_REMOVE(&(file->rf_locks), lkp, rl_list);
923: rcsnum_free(lkp->rl_num);
924: cvs_strfree(lkp->rl_name);
925: free(lkp);
926:
927: /* not synced anymore */
928: file->rf_flags &= ~RCS_SYNCED;
929: return (0);
930: }
931:
932: /*
1.27 jfb 933: * rcs_desc_get()
934: *
935: * Retrieve the description for the RCS file <file>.
936: */
937: const char*
938: rcs_desc_get(RCSFILE *file)
939: {
940: return (file->rf_desc);
941: }
942:
943: /*
944: * rcs_desc_set()
945: *
946: * Set the description for the RCS file <file>.
947: * Returns 0 on success, or -1 on failure.
948: */
949: int
950: rcs_desc_set(RCSFILE *file, const char *desc)
951: {
952: char *tmp;
953:
1.39 joris 954: if ((tmp = cvs_strdup(desc)) == NULL)
1.27 jfb 955: return (-1);
956:
957: if (file->rf_desc != NULL)
1.39 joris 958: cvs_strfree(file->rf_desc);
1.27 jfb 959: file->rf_desc = tmp;
960: file->rf_flags &= ~RCS_SYNCED;
961:
962: return (0);
1.51 jfb 963: }
964:
965: /*
966: * rcs_comment_lookup()
967: *
968: * Lookup the assumed comment leader based on a file's suffix.
969: * Returns a pointer to the string on success, or NULL on failure.
970: */
971: const char*
972: rcs_comment_lookup(const char *filename)
973: {
974: int i;
975: const char *sp;
976:
977: if ((sp = strrchr(filename, '.')) == NULL) {
978: rcs_errno = RCS_ERR_NOENT;
979: return (NULL);
980: }
981: sp++;
982:
983: for (i = 0; i < (int)NB_COMTYPES; i++)
984: if (strcmp(rcs_comments[i].rc_suffix, sp) == 0)
985: return (rcs_comments[i].rc_cstr);
986: return (NULL);
1.27 jfb 987: }
988:
1.33 jfb 989: /*
990: * rcs_comment_get()
991: *
992: * Retrieve the comment leader for the RCS file <file>.
993: */
994: const char*
995: rcs_comment_get(RCSFILE *file)
996: {
997: return (file->rf_comment);
998: }
999:
1000: /*
1001: * rcs_comment_set()
1002: *
1003: * Set the comment leader for the RCS file <file>.
1004: * Returns 0 on success, or -1 on failure.
1005: */
1006: int
1007: rcs_comment_set(RCSFILE *file, const char *comment)
1008: {
1009: char *tmp;
1010:
1.39 joris 1011: if ((tmp = cvs_strdup(comment)) == NULL)
1.33 jfb 1012: return (-1);
1013:
1014: if (file->rf_comment != NULL)
1.39 joris 1015: cvs_strfree(file->rf_comment);
1.33 jfb 1016: file->rf_comment = tmp;
1017: file->rf_flags &= ~RCS_SYNCED;
1018:
1019: return (0);
1020: }
1.40 jfb 1021:
1022: /*
1023: * rcs_tag_resolve()
1024: *
1025: * Retrieve the revision number corresponding to the tag <tag> for the RCS
1026: * file <file>.
1027: */
1028: RCSNUM*
1029: rcs_tag_resolve(RCSFILE *file, const char *tag)
1030: {
1031: RCSNUM *num;
1032:
1033: if ((num = rcsnum_parse(tag)) == NULL) {
1034: num = rcs_sym_getrev(file, tag);
1035: }
1036:
1037: return (num);
1038: }
1039:
1.27 jfb 1040:
1041: /*
1.1 jfb 1042: * rcs_patch()
1043: *
1044: * Apply an RCS-format patch pointed to by <patch> to the file contents
1045: * found in <data>.
1046: * Returns 0 on success, or -1 on failure.
1047: */
1048: BUF*
1049: rcs_patch(const char *data, const char *patch)
1050: {
1.5 vincent 1051: struct rcs_foo *dlines, *plines;
1052: struct rcs_line *lp;
1.1 jfb 1053: size_t len;
1.5 vincent 1054: int lineno;
1.1 jfb 1055: BUF *res;
1056:
1057: len = strlen(data);
1058: res = cvs_buf_alloc(len, BUF_AUTOEXT);
1059: if (res == NULL)
1060: return (NULL);
1061:
1062: dlines = rcs_splitlines(data);
1.17 jfb 1063: if (dlines == NULL) {
1064: cvs_buf_free(res);
1.1 jfb 1065: return (NULL);
1.17 jfb 1066: }
1.5 vincent 1067:
1.1 jfb 1068: plines = rcs_splitlines(patch);
1.5 vincent 1069: if (plines == NULL) {
1.17 jfb 1070: cvs_buf_free(res);
1.5 vincent 1071: rcs_freefoo(dlines);
1.1 jfb 1072: return (NULL);
1.5 vincent 1073: }
1074:
1075: if (rcs_patch_lines(dlines, plines) < 0) {
1.17 jfb 1076: cvs_buf_free(res);
1.5 vincent 1077: rcs_freefoo(plines);
1078: rcs_freefoo(dlines);
1079: return (NULL);
1080: }
1081:
1082: lineno = 0;
1083: TAILQ_FOREACH(lp, &dlines->rl_lines, rl_list) {
1084: if (lineno != 0)
1085: cvs_buf_fappend(res, "%s\n", lp->rl_line);
1086: lineno++;
1087: }
1088:
1089: rcs_freefoo(dlines);
1090: rcs_freefoo(plines);
1091: return (res);
1092: }
1093:
1.7 jfb 1094: static int
1.5 vincent 1095: rcs_patch_lines(struct rcs_foo *dlines, struct rcs_foo *plines)
1096: {
1097: char op, *ep;
1098: struct rcs_line *lp, *dlp, *ndlp;
1099: int i, lineno, nbln;
1.1 jfb 1100:
1101: dlp = TAILQ_FIRST(&(dlines->rl_lines));
1102: lp = TAILQ_FIRST(&(plines->rl_lines));
1103:
1104: /* skip first bogus line */
1105: for (lp = TAILQ_NEXT(lp, rl_list); lp != NULL;
1106: lp = TAILQ_NEXT(lp, rl_list)) {
1107: op = *(lp->rl_line);
1108: lineno = (int)strtol((lp->rl_line + 1), &ep, 10);
1109: if ((lineno > dlines->rl_nblines) || (lineno <= 0) ||
1110: (*ep != ' ')) {
1111: cvs_log(LP_ERR,
1112: "invalid line specification in RCS patch");
1113: return (NULL);
1114: }
1115: ep++;
1116: nbln = (int)strtol(ep, &ep, 10);
1117: if ((nbln <= 0) || (*ep != '\0')) {
1118: cvs_log(LP_ERR,
1119: "invalid line number specification in RCS patch");
1120: return (NULL);
1121: }
1122:
1123: /* find the appropriate line */
1124: for (;;) {
1125: if (dlp == NULL)
1126: break;
1127: if (dlp->rl_lineno == lineno)
1128: break;
1129: if (dlp->rl_lineno > lineno) {
1130: dlp = TAILQ_PREV(dlp, rcs_tqh, rl_list);
1.14 deraadt 1131: } else if (dlp->rl_lineno < lineno) {
1.1 jfb 1132: ndlp = TAILQ_NEXT(dlp, rl_list);
1133: if (ndlp->rl_lineno > lineno)
1134: break;
1135: dlp = ndlp;
1136: }
1137: }
1138: if (dlp == NULL) {
1139: cvs_log(LP_ERR,
1140: "can't find referenced line in RCS patch");
1141: return (NULL);
1142: }
1143:
1144: if (op == 'd') {
1145: for (i = 0; (i < nbln) && (dlp != NULL); i++) {
1146: ndlp = TAILQ_NEXT(dlp, rl_list);
1147: TAILQ_REMOVE(&(dlines->rl_lines), dlp, rl_list);
1148: dlp = ndlp;
1149: }
1.14 deraadt 1150: } else if (op == 'a') {
1.1 jfb 1151: for (i = 0; i < nbln; i++) {
1152: ndlp = lp;
1153: lp = TAILQ_NEXT(lp, rl_list);
1154: if (lp == NULL) {
1155: cvs_log(LP_ERR, "truncated RCS patch");
1.5 vincent 1156: return (-1);
1.1 jfb 1157: }
1158: TAILQ_REMOVE(&(plines->rl_lines), lp, rl_list);
1159: TAILQ_INSERT_AFTER(&(dlines->rl_lines), dlp,
1160: lp, rl_list);
1161: dlp = lp;
1162:
1163: /* we don't want lookup to block on those */
1164: lp->rl_lineno = lineno;
1165:
1166: lp = ndlp;
1167: }
1.14 deraadt 1168: } else {
1.1 jfb 1169: cvs_log(LP_ERR, "unknown RCS patch operation `%c'", op);
1.5 vincent 1170: return (-1);
1.1 jfb 1171: }
1172:
1173: /* last line of the patch, done */
1174: if (lp->rl_lineno == plines->rl_nblines)
1175: break;
1176: }
1177:
1178: /* once we're done patching, rebuild the line numbers */
1.2 vincent 1179: lineno = 0;
1.5 vincent 1180: TAILQ_FOREACH(lp, &(dlines->rl_lines), rl_list)
1.1 jfb 1181: lp->rl_lineno = lineno++;
1182: dlines->rl_nblines = lineno - 1;
1183:
1.5 vincent 1184: return (0);
1.1 jfb 1185: }
1186:
1187: /*
1188: * rcs_getrev()
1189: *
1190: * Get the whole contents of revision <rev> from the RCSFILE <rfp>. The
1.4 vincent 1191: * returned buffer is dynamically allocated and should be released using
1192: * cvs_buf_free() once the caller is done using it.
1.1 jfb 1193: */
1194: BUF*
1195: rcs_getrev(RCSFILE *rfp, RCSNUM *rev)
1196: {
1197: int res;
1198: size_t len;
1199: void *bp;
1200: RCSNUM *crev;
1201: BUF *rbuf;
1202: struct rcs_delta *rdp = NULL;
1203:
1.28 jfb 1204: if (rfp->rf_head == NULL)
1205: return (NULL);
1206:
1.1 jfb 1207: res = rcsnum_cmp(rfp->rf_head, rev, 0);
1208: if (res == 1) {
1.32 jfb 1209: rcs_errno = RCS_ERR_NOENT;
1.1 jfb 1210: return (NULL);
1.26 jfb 1211: }
1212:
1213: rdp = rcs_findrev(rfp, rfp->rf_head);
1214: if (rdp == NULL) {
1215: cvs_log(LP_ERR, "failed to get RCS HEAD revision");
1216: return (NULL);
1217: }
1218:
1.45 jfb 1219: len = rdp->rd_tlen;
1.26 jfb 1220: if ((rbuf = cvs_buf_alloc(len, BUF_AUTOEXT)) == NULL)
1221: return (NULL);
1222:
1223: cvs_buf_append(rbuf, rdp->rd_text, len);
1224:
1225: if (res != 0) {
1226: /* Apply patches backwards to get the right version.
1227: * This will need some rework to support sub branches.
1228: */
1229: if ((crev = rcsnum_alloc()) == NULL) {
1230: cvs_buf_free(rbuf);
1.1 jfb 1231: return (NULL);
1232: }
1.26 jfb 1233: rcsnum_cpy(rfp->rf_head, crev, 0);
1234: do {
1235: crev->rn_id[crev->rn_len - 1]--;
1236: rdp = rcs_findrev(rfp, crev);
1237: if (rdp == NULL) {
1238: rcsnum_free(crev);
1239: cvs_buf_free(rbuf);
1240: return (NULL);
1241: }
1.1 jfb 1242:
1.26 jfb 1243: if (cvs_buf_putc(rbuf, '\0') < 0) {
1244: rcsnum_free(crev);
1.17 jfb 1245: cvs_buf_free(rbuf);
1.11 joris 1246: return (NULL);
1.17 jfb 1247: }
1.26 jfb 1248: bp = cvs_buf_release(rbuf);
1.45 jfb 1249: rbuf = rcs_patch((char *)bp, (char *)rdp->rd_text);
1.26 jfb 1250: if (rbuf == NULL)
1251: break;
1252: } while (rcsnum_cmp(crev, rev, 0) != 0);
1.1 jfb 1253:
1.26 jfb 1254: rcsnum_free(crev);
1.1 jfb 1255: }
1256:
1257: return (rbuf);
1258: }
1259:
1260: /*
1.52 jfb 1261: * rcs_rev_add()
1262: *
1.53 jfb 1263: * Add a revision to the RCS file <rf>. The new revision's number can be
1264: * specified in <rev> (which can also be RCS_HEAD_REV, in which case the
1265: * new revision will have a number equal to the previous head revision plus
1266: * one). The <msg> argument specifies the log message for that revision, and
1267: * <date> specifies the revision's date (a value of -1 is
1268: * equivalent to using the current time).
1.52 jfb 1269: * Returns 0 on success, or -1 on failure.
1270: */
1271: int
1.53 jfb 1272: rcs_rev_add(RCSFILE *rf, RCSNUM *rev, const char *msg, time_t date)
1.52 jfb 1273: {
1274: time_t now;
1275: struct passwd *pw;
1276: struct rcs_delta *rdp;
1277:
1278: if (rev == RCS_HEAD_REV) {
1279: } else if ((rdp = rcs_findrev(rf, rev)) != NULL) {
1280: rcs_errno = RCS_ERR_DUPENT;
1281: return (-1);
1282: }
1283:
1284: if ((pw = getpwuid(getuid())) == NULL) {
1285: rcs_errno = RCS_ERR_ERRNO;
1286: return (-1);
1287: }
1288:
1289: if ((rdp = (struct rcs_delta *)malloc(sizeof(*rdp))) == NULL) {
1290: rcs_errno = RCS_ERR_ERRNO;
1291: return (-1);
1292: }
1293: memset(rdp, 0, sizeof(*rdp));
1294:
1295: TAILQ_INIT(&(rdp->rd_branches));
1296: TAILQ_INIT(&(rdp->rd_snodes));
1297:
1298: if ((rdp->rd_num = rcsnum_alloc()) == NULL) {
1299: rcs_freedelta(rdp);
1300: return (-1);
1301: }
1302: rcsnum_cpy(rev, rdp->rd_num, 0);
1303:
1304: if ((rdp->rd_author = cvs_strdup(pw->pw_name)) == NULL) {
1305: rcs_freedelta(rdp);
1306: return (-1);
1307: }
1308:
1309: if ((rdp->rd_state = cvs_strdup(RCS_STATE_EXP)) == NULL) {
1310: rcs_freedelta(rdp);
1311: return (-1);
1312: }
1313:
1314: if ((rdp->rd_log = cvs_strdup(msg)) == NULL) {
1315: rcs_errno = RCS_ERR_ERRNO;
1316: rcs_freedelta(rdp);
1317: return (-1);
1318: }
1319:
1.53 jfb 1320: if (date != (time_t)(-1))
1321: now = date;
1322: else
1323: time(&now);
1.52 jfb 1324: gmtime_r(&now, &(rdp->rd_date));
1325:
1326: TAILQ_INSERT_HEAD(&(rf->rf_delta), rdp, rd_list);
1327: rf->rf_ndelta++;
1328:
1329: return (0);
1330: }
1331:
1332: /*
1333: * rcs_rev_remove()
1334: *
1335: * Remove the revision whose number is <rev> from the RCS file <rf>.
1336: */
1337: int
1338: rcs_rev_remove(RCSFILE *rf, RCSNUM *rev)
1339: {
1340: int ret;
1341: struct rcs_delta *rdp;
1342:
1343: ret = 0;
1344: if (rev == RCS_HEAD_REV)
1345: rev = rf->rf_head;
1346:
1347: /* do we actually have that revision? */
1348: if ((rdp = rcs_findrev(rf, rev)) == NULL) {
1349: rcs_errno = RCS_ERR_NOENT;
1350: ret = -1;
1351: } else {
1352: /* XXX assumes it's not a sub node */
1353: TAILQ_REMOVE(&(rf->rf_delta), rdp, rd_list);
1354: rf->rf_ndelta--;
1355: rf->rf_flags &= ~RCS_SYNCED;
1356: }
1357:
1358: return (ret);
1359:
1360: }
1361:
1362: /*
1.1 jfb 1363: * rcs_findrev()
1364: *
1365: * Find a specific revision's delta entry in the tree of the RCS file <rfp>.
1366: * The revision number is given in <rev>.
1367: * Returns a pointer to the delta on success, or NULL on failure.
1368: */
1369: static struct rcs_delta*
1.43 jfb 1370: rcs_findrev(RCSFILE *rfp, const RCSNUM *rev)
1.1 jfb 1371: {
1372: u_int cmplen;
1373: struct rcs_delta *rdp;
1374: struct rcs_dlist *hp;
1.6 vincent 1375: int found;
1.26 jfb 1376:
1.1 jfb 1377: cmplen = 2;
1378: hp = &(rfp->rf_delta);
1379:
1.6 vincent 1380: do {
1381: found = 0;
1382: TAILQ_FOREACH(rdp, hp, rd_list) {
1383: if (rcsnum_cmp(rdp->rd_num, rev, cmplen) == 0) {
1384: if (cmplen == rev->rn_len)
1385: return (rdp);
1.1 jfb 1386:
1.6 vincent 1387: hp = &(rdp->rd_snodes);
1388: cmplen += 2;
1389: found = 1;
1390: break;
1391: }
1.1 jfb 1392: }
1.6 vincent 1393: } while (found && cmplen < rev->rn_len);
1.1 jfb 1394:
1395: return (NULL);
1.20 jfb 1396: }
1397:
1398: /*
1.26 jfb 1399: * rcs_kwexp_set()
1400: *
1401: * Set the keyword expansion mode to use on the RCS file <file> to <mode>.
1402: * Returns 0 on success, or -1 on failure.
1403: */
1404: int
1405: rcs_kwexp_set(RCSFILE *file, int mode)
1406: {
1407: int i;
1408: char *tmp, buf[8] = "";
1409:
1410: if (RCS_KWEXP_INVAL(mode))
1411: return (-1);
1412:
1413: i = 0;
1414: if (mode == RCS_KWEXP_NONE)
1415: buf[0] = 'b';
1416: else if (mode == RCS_KWEXP_OLD)
1417: buf[0] = 'o';
1418: else {
1419: if (mode & RCS_KWEXP_NAME)
1420: buf[i++] = 'k';
1421: if (mode & RCS_KWEXP_VAL)
1422: buf[i++] = 'v';
1423: if (mode & RCS_KWEXP_LKR)
1424: buf[i++] = 'l';
1425: }
1426:
1.39 joris 1427: if ((tmp = cvs_strdup(buf)) == NULL) {
1.26 jfb 1428: cvs_log(LP_ERRNO, "%s: failed to copy expansion mode",
1429: file->rf_path);
1430: return (-1);
1431: }
1432:
1.27 jfb 1433: if (file->rf_expand != NULL)
1.39 joris 1434: cvs_strfree(file->rf_expand);
1.26 jfb 1435: file->rf_expand = tmp;
1436:
1437: return (0);
1438: }
1439:
1440: /*
1441: * rcs_kwexp_get()
1442: *
1443: * Retrieve the keyword expansion mode to be used for the RCS file <file>.
1444: */
1445: int
1446: rcs_kwexp_get(RCSFILE *file)
1447: {
1448: return rcs_kflag_get(file->rf_expand);
1449: }
1450:
1451: /*
1.20 jfb 1452: * rcs_kflag_get()
1453: *
1454: * Get the keyword expansion mode from a set of character flags given in
1455: * <flags> and return the appropriate flag mask. In case of an error, the
1456: * returned mask will have the RCS_KWEXP_ERR bit set to 1.
1457: */
1458: int
1459: rcs_kflag_get(const char *flags)
1460: {
1461: int fl;
1462: size_t len;
1463: const char *fp;
1464:
1465: fl = 0;
1466: len = strlen(flags);
1467:
1468: for (fp = flags; *fp != '\0'; fp++) {
1469: if (*fp == 'k')
1470: fl |= RCS_KWEXP_NAME;
1471: else if (*fp == 'v')
1472: fl |= RCS_KWEXP_VAL;
1473: else if (*fp == 'l')
1474: fl |= RCS_KWEXP_LKR;
1475: else if (*fp == 'o') {
1476: if (len != 1)
1477: fl |= RCS_KWEXP_ERR;
1478: fl |= RCS_KWEXP_OLD;
1479: } else if (*fp == 'b') {
1480: if (len != 1)
1481: fl |= RCS_KWEXP_ERR;
1482: } else /* unknown letter */
1483: fl |= RCS_KWEXP_ERR;
1484: }
1485:
1486: return (fl);
1.32 jfb 1487: }
1488:
1489: /*
1490: * rcs_errstr()
1491: *
1492: * Get the error string matching the RCS error code <code>.
1493: */
1494: const char*
1495: rcs_errstr(int code)
1496: {
1.50 jfb 1497: const char *esp;
1498:
1499: if ((code < 0) || ((code >= (int)RCS_NERR) && (code != RCS_ERR_ERRNO)))
1500: esp = NULL;
1501: else if (code == RCS_ERR_ERRNO)
1502: esp = strerror(errno);
1503: else
1504: esp = rcs_errstrs[code];
1505: return (esp);
1.1 jfb 1506: }
1507:
1.21 jfb 1508: void
1509: rcs_kflag_usage(void)
1510: {
1511: fprintf(stderr, "Valid expansion modes include:\n"
1.22 jfb 1512: "\t-kkv\tGenerate keywords using the default form.\n"
1513: "\t-kkvl\tLike -kkv, except locker's name inserted.\n"
1514: "\t-kk\tGenerate only keyword names in keyword strings.\n"
1515: "\t-kv\tGenerate only keyword values in keyword strings.\n"
1516: "\t-ko\tGenerate old keyword string "
1.21 jfb 1517: "(no changes from checked in file).\n"
1.22 jfb 1518: "\t-kb\tGenerate binary file unmodified (merges not allowed).\n");
1.21 jfb 1519: }
1.1 jfb 1520:
1521: /*
1522: * rcs_parse()
1523: *
1524: * Parse the contents of file <path>, which are in the RCS format.
1525: * Returns 0 on success, or -1 on failure.
1526: */
1.26 jfb 1527: static int
1.1 jfb 1528: rcs_parse(RCSFILE *rfp)
1529: {
1530: int ret;
1531: struct rcs_pdata *pdp;
1532:
1.26 jfb 1533: if (rfp->rf_flags & RCS_PARSED)
1.1 jfb 1534: return (0);
1535:
1.26 jfb 1536: if ((pdp = (struct rcs_pdata *)malloc(sizeof(*pdp))) == NULL) {
1.50 jfb 1537: rcs_errno = RCS_ERR_ERRNO;
1.1 jfb 1538: cvs_log(LP_ERRNO, "failed to allocate RCS parser data");
1539: return (-1);
1540: }
1541: memset(pdp, 0, sizeof(*pdp));
1542:
1.18 jfb 1543: pdp->rp_lines = 0;
1.1 jfb 1544: pdp->rp_pttype = RCS_TOK_ERR;
1545:
1546: pdp->rp_file = fopen(rfp->rf_path, "r");
1547: if (pdp->rp_file == NULL) {
1.50 jfb 1548: rcs_errno = RCS_ERR_ERRNO;
1.1 jfb 1549: cvs_log(LP_ERRNO, "failed to open RCS file `%s'", rfp->rf_path);
1550: rcs_freepdata(pdp);
1551: return (-1);
1552: }
1553:
1554: pdp->rp_buf = (char *)malloc(RCS_BUFSIZE);
1555: if (pdp->rp_buf == NULL) {
1.50 jfb 1556: rcs_errno = RCS_ERR_ERRNO;
1.1 jfb 1557: cvs_log(LP_ERRNO, "failed to allocate RCS parser buffer");
1558: rcs_freepdata(pdp);
1559: return (-1);
1560: }
1561: pdp->rp_blen = RCS_BUFSIZE;
1.18 jfb 1562: pdp->rp_bufend = pdp->rp_buf + pdp->rp_blen - 1;
1.1 jfb 1563:
1564: /* ditch the strict lock */
1.26 jfb 1565: rfp->rf_flags &= ~RCS_SLOCK;
1.1 jfb 1566: rfp->rf_pdata = pdp;
1567:
1.31 jfb 1568: if ((ret = rcs_parse_admin(rfp)) < 0) {
1.1 jfb 1569: rcs_freepdata(pdp);
1570: return (-1);
1.31 jfb 1571: } else if (ret == RCS_TOK_NUM) {
1572: for (;;) {
1573: ret = rcs_parse_delta(rfp);
1574: if (ret == 0)
1575: break;
1576: else if (ret == -1) {
1577: rcs_freepdata(pdp);
1578: return (-1);
1579: }
1.1 jfb 1580: }
1581: }
1582:
1583: ret = rcs_gettok(rfp);
1584: if (ret != RCS_TOK_DESC) {
1.50 jfb 1585: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 1586: cvs_log(LP_ERR, "token `%s' found where RCS desc expected",
1587: RCS_TOKSTR(rfp));
1588: rcs_freepdata(pdp);
1589: return (-1);
1590: }
1591:
1592: ret = rcs_gettok(rfp);
1593: if (ret != RCS_TOK_STRING) {
1.50 jfb 1594: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 1595: cvs_log(LP_ERR, "token `%s' found where RCS desc expected",
1596: RCS_TOKSTR(rfp));
1597: rcs_freepdata(pdp);
1598: return (-1);
1599: }
1600:
1.39 joris 1601: rfp->rf_desc = cvs_strdup(RCS_TOKSTR(rfp));
1.10 joris 1602: if (rfp->rf_desc == NULL) {
1603: cvs_log(LP_ERRNO, "failed to duplicate rcs token");
1604: rcs_freepdata(pdp);
1605: return (-1);
1606: }
1.1 jfb 1607:
1608: for (;;) {
1609: ret = rcs_parse_deltatext(rfp);
1610: if (ret == 0)
1611: break;
1612: else if (ret == -1) {
1613: rcs_freepdata(pdp);
1614: return (-1);
1615: }
1616: }
1617:
1618: rcs_freepdata(pdp);
1619:
1620: rfp->rf_pdata = NULL;
1.26 jfb 1621: rfp->rf_flags |= RCS_PARSED | RCS_SYNCED;
1.1 jfb 1622:
1623: return (0);
1624: }
1625:
1626: /*
1627: * rcs_parse_admin()
1628: *
1629: * Parse the administrative portion of an RCS file.
1.31 jfb 1630: * Returns the type of the first token found after the admin section on
1631: * success, or -1 on failure.
1.1 jfb 1632: */
1633: static int
1634: rcs_parse_admin(RCSFILE *rfp)
1635: {
1636: u_int i;
1637: int tok, ntok, hmask;
1638: struct rcs_key *rk;
1639:
1640: /* hmask is a mask of the headers already encountered */
1641: hmask = 0;
1642: for (;;) {
1643: tok = rcs_gettok(rfp);
1644: if (tok == RCS_TOK_ERR) {
1.50 jfb 1645: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 1646: cvs_log(LP_ERR, "parse error in RCS admin section");
1647: return (-1);
1.31 jfb 1648: } else if ((tok == RCS_TOK_NUM) || (tok == RCS_TOK_DESC)) {
1649: /*
1650: * Assume this is the start of the first delta or
1651: * that we are dealing with an empty RCS file and
1652: * we just found the description.
1653: */
1.1 jfb 1654: rcs_pushtok(rfp, RCS_TOKSTR(rfp), tok);
1.31 jfb 1655: return (tok);
1.1 jfb 1656: }
1657:
1658: rk = NULL;
1.18 jfb 1659: for (i = 0; i < RCS_NKEYS; i++)
1.1 jfb 1660: if (rcs_keys[i].rk_id == tok)
1661: rk = &(rcs_keys[i]);
1662:
1663: if (hmask & (1 << tok)) {
1.50 jfb 1664: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 1665: cvs_log(LP_ERR, "duplicate RCS key");
1666: return (-1);
1667: }
1668: hmask |= (1 << tok);
1669:
1670: switch (tok) {
1671: case RCS_TOK_HEAD:
1672: case RCS_TOK_BRANCH:
1673: case RCS_TOK_COMMENT:
1674: case RCS_TOK_EXPAND:
1675: ntok = rcs_gettok(rfp);
1676: if (ntok == RCS_TOK_SCOLON)
1677: break;
1678: if (ntok != rk->rk_val) {
1.50 jfb 1679: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 1680: cvs_log(LP_ERR,
1681: "invalid value type for RCS key `%s'",
1682: rk->rk_str);
1683: }
1684:
1685: if (tok == RCS_TOK_HEAD) {
1.28 jfb 1686: if (rfp->rf_head == NULL) {
1687: rfp->rf_head = rcsnum_alloc();
1688: if (rfp->rf_head == NULL)
1689: return (-1);
1690: }
1.1 jfb 1691: rcsnum_aton(RCS_TOKSTR(rfp), NULL,
1692: rfp->rf_head);
1.14 deraadt 1693: } else if (tok == RCS_TOK_BRANCH) {
1.35 jfb 1694: if (rfp->rf_branch == NULL) {
1695: rfp->rf_branch = rcsnum_alloc();
1696: if (rfp->rf_branch == NULL)
1697: return (-1);
1698: }
1699: if (rcsnum_aton(RCS_TOKSTR(rfp), NULL,
1700: rfp->rf_branch) < 0)
1701: return (-1);
1.14 deraadt 1702: } else if (tok == RCS_TOK_COMMENT) {
1.39 joris 1703: rfp->rf_comment = cvs_strdup(RCS_TOKSTR(rfp));
1.10 joris 1704: if (rfp->rf_comment == NULL) {
1705: cvs_log(LP_ERRNO,
1706: "failed to duplicate rcs token");
1707: return (-1);
1708: }
1.14 deraadt 1709: } else if (tok == RCS_TOK_EXPAND) {
1.39 joris 1710: rfp->rf_expand = cvs_strdup(RCS_TOKSTR(rfp));
1.10 joris 1711: if (rfp->rf_expand == NULL) {
1712: cvs_log(LP_ERRNO,
1713: "failed to duplicate rcs token");
1714: return (-1);
1715: }
1.1 jfb 1716: }
1717:
1718: /* now get the expected semi-colon */
1719: ntok = rcs_gettok(rfp);
1720: if (ntok != RCS_TOK_SCOLON) {
1.50 jfb 1721: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 1722: cvs_log(LP_ERR,
1723: "missing semi-colon after RCS `%s' key",
1.26 jfb 1724: rk->rk_str);
1.1 jfb 1725: return (-1);
1726: }
1727: break;
1728: case RCS_TOK_ACCESS:
1.29 jfb 1729: if (rcs_parse_access(rfp) < 0)
1730: return (-1);
1.1 jfb 1731: break;
1732: case RCS_TOK_SYMBOLS:
1.29 jfb 1733: if (rcs_parse_symbols(rfp) < 0)
1734: return (-1);
1.1 jfb 1735: break;
1736: case RCS_TOK_LOCKS:
1.29 jfb 1737: if (rcs_parse_locks(rfp) < 0)
1738: return (-1);
1.1 jfb 1739: break;
1740: default:
1.50 jfb 1741: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 1742: cvs_log(LP_ERR,
1743: "unexpected token `%s' in RCS admin section",
1744: RCS_TOKSTR(rfp));
1745: return (-1);
1746: }
1747: }
1748:
1749: return (0);
1750: }
1751:
1752: /*
1753: * rcs_parse_delta()
1754: *
1755: * Parse an RCS delta section and allocate the structure to store that delta's
1756: * information in the <rfp> delta list.
1757: * Returns 1 if the section was parsed OK, 0 if it is the last delta, and
1758: * -1 on error.
1759: */
1760: static int
1761: rcs_parse_delta(RCSFILE *rfp)
1762: {
1763: int ret, tok, ntok, hmask;
1764: u_int i;
1765: char *tokstr;
1.3 vincent 1766: RCSNUM *datenum;
1.1 jfb 1767: struct rcs_delta *rdp;
1768: struct rcs_key *rk;
1769:
1770: rdp = (struct rcs_delta *)malloc(sizeof(*rdp));
1771: if (rdp == NULL) {
1.50 jfb 1772: rcs_errno = RCS_ERR_ERRNO;
1.1 jfb 1773: cvs_log(LP_ERRNO, "failed to allocate RCS delta structure");
1774: return (-1);
1775: }
1776: memset(rdp, 0, sizeof(*rdp));
1777:
1778: rdp->rd_num = rcsnum_alloc();
1.11 joris 1779: if (rdp->rd_num == NULL) {
1780: rcs_freedelta(rdp);
1781: return (-1);
1782: }
1.1 jfb 1783: rdp->rd_next = rcsnum_alloc();
1.11 joris 1784: if (rdp->rd_next == NULL) {
1785: rcs_freedelta(rdp);
1786: return (-1);
1787: }
1.1 jfb 1788:
1789: TAILQ_INIT(&(rdp->rd_branches));
1.52 jfb 1790: TAILQ_INIT(&(rdp->rd_snodes));
1.1 jfb 1791:
1792: tok = rcs_gettok(rfp);
1793: if (tok != RCS_TOK_NUM) {
1.52 jfb 1794: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 1795: cvs_log(LP_ERR, "unexpected token `%s' at start of delta",
1796: RCS_TOKSTR(rfp));
1797: rcs_freedelta(rdp);
1798: return (-1);
1799: }
1800: rcsnum_aton(RCS_TOKSTR(rfp), NULL, rdp->rd_num);
1801:
1802: hmask = 0;
1803: ret = 0;
1804: tokstr = NULL;
1805:
1806: for (;;) {
1807: tok = rcs_gettok(rfp);
1808: if (tok == RCS_TOK_ERR) {
1.50 jfb 1809: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 1810: cvs_log(LP_ERR, "parse error in RCS delta section");
1811: rcs_freedelta(rdp);
1812: return (-1);
1.14 deraadt 1813: } else if (tok == RCS_TOK_NUM || tok == RCS_TOK_DESC) {
1.15 tedu 1814: rcs_pushtok(rfp, RCS_TOKSTR(rfp), tok);
1.1 jfb 1815: ret = (tok == RCS_TOK_NUM ? 1 : 0);
1816: break;
1817: }
1818:
1819: rk = NULL;
1.18 jfb 1820: for (i = 0; i < RCS_NKEYS; i++)
1.1 jfb 1821: if (rcs_keys[i].rk_id == tok)
1822: rk = &(rcs_keys[i]);
1823:
1824: if (hmask & (1 << tok)) {
1.50 jfb 1825: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 1826: cvs_log(LP_ERR, "duplicate RCS key");
1827: rcs_freedelta(rdp);
1828: return (-1);
1829: }
1830: hmask |= (1 << tok);
1831:
1832: switch (tok) {
1833: case RCS_TOK_DATE:
1834: case RCS_TOK_AUTHOR:
1835: case RCS_TOK_STATE:
1836: case RCS_TOK_NEXT:
1837: ntok = rcs_gettok(rfp);
1838: if (ntok == RCS_TOK_SCOLON) {
1839: if (rk->rk_flags & RCS_VOPT)
1840: break;
1841: else {
1.50 jfb 1842: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 1843: cvs_log(LP_ERR, "missing mandatory "
1844: "value to RCS key `%s'",
1845: rk->rk_str);
1846: rcs_freedelta(rdp);
1847: return (-1);
1848: }
1849: }
1850:
1851: if (ntok != rk->rk_val) {
1.50 jfb 1852: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 1853: cvs_log(LP_ERR,
1854: "invalid value type for RCS key `%s'",
1855: rk->rk_str);
1856: rcs_freedelta(rdp);
1857: return (-1);
1858: }
1859:
1860: if (tokstr != NULL)
1.41 jfb 1861: cvs_strfree(tokstr);
1.39 joris 1862: tokstr = cvs_strdup(RCS_TOKSTR(rfp));
1.10 joris 1863: if (tokstr == NULL) {
1.15 tedu 1864: cvs_log(LP_ERRNO,
1.10 joris 1865: "failed to duplicate rcs token");
1866: rcs_freedelta(rdp);
1867: return (-1);
1868: }
1.1 jfb 1869:
1870: /* now get the expected semi-colon */
1871: ntok = rcs_gettok(rfp);
1872: if (ntok != RCS_TOK_SCOLON) {
1.50 jfb 1873: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 1874: cvs_log(LP_ERR,
1875: "missing semi-colon after RCS `%s' key",
1.26 jfb 1876: rk->rk_str);
1.41 jfb 1877: cvs_strfree(tokstr);
1.1 jfb 1878: rcs_freedelta(rdp);
1879: return (-1);
1880: }
1881:
1882: if (tok == RCS_TOK_DATE) {
1.25 jfb 1883: if ((datenum = rcsnum_parse(tokstr)) == NULL) {
1.41 jfb 1884: cvs_strfree(tokstr);
1.11 joris 1885: rcs_freedelta(rdp);
1886: return (-1);
1887: }
1.3 vincent 1888: if (datenum->rn_len != 6) {
1.50 jfb 1889: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 1890: cvs_log(LP_ERR,
1891: "RCS date specification has %s "
1892: "fields",
1.3 vincent 1893: (datenum->rn_len > 6) ? "too many" :
1.1 jfb 1894: "missing");
1.41 jfb 1895: cvs_strfree(tokstr);
1.1 jfb 1896: rcs_freedelta(rdp);
1.37 tedu 1897: rcsnum_free(datenum);
1898: return (-1);
1.1 jfb 1899: }
1.3 vincent 1900: rdp->rd_date.tm_year = datenum->rn_id[0];
1.19 jfb 1901: if (rdp->rd_date.tm_year >= 1900)
1902: rdp->rd_date.tm_year -= 1900;
1.3 vincent 1903: rdp->rd_date.tm_mon = datenum->rn_id[1] - 1;
1904: rdp->rd_date.tm_mday = datenum->rn_id[2];
1905: rdp->rd_date.tm_hour = datenum->rn_id[3];
1906: rdp->rd_date.tm_min = datenum->rn_id[4];
1907: rdp->rd_date.tm_sec = datenum->rn_id[5];
1908: rcsnum_free(datenum);
1.14 deraadt 1909: } else if (tok == RCS_TOK_AUTHOR) {
1.1 jfb 1910: rdp->rd_author = tokstr;
1911: tokstr = NULL;
1.14 deraadt 1912: } else if (tok == RCS_TOK_STATE) {
1.1 jfb 1913: rdp->rd_state = tokstr;
1914: tokstr = NULL;
1.14 deraadt 1915: } else if (tok == RCS_TOK_NEXT) {
1.1 jfb 1916: rcsnum_aton(tokstr, NULL, rdp->rd_next);
1917: }
1918: break;
1919: case RCS_TOK_BRANCHES:
1.46 jfb 1920: if (rcs_parse_branches(rfp, rdp) < 0) {
1921: rcs_freedelta(rdp);
1922: return (-1);
1923: }
1.1 jfb 1924: break;
1925: default:
1.50 jfb 1926: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 1927: cvs_log(LP_ERR,
1928: "unexpected token `%s' in RCS delta",
1929: RCS_TOKSTR(rfp));
1930: rcs_freedelta(rdp);
1931: return (-1);
1932: }
1933: }
1934:
1.13 jfb 1935: if (tokstr != NULL)
1.39 joris 1936: cvs_strfree(tokstr);
1.13 jfb 1937:
1.1 jfb 1938: TAILQ_INSERT_TAIL(&(rfp->rf_delta), rdp, rd_list);
1.26 jfb 1939: rfp->rf_ndelta++;
1.1 jfb 1940:
1941: return (ret);
1942: }
1943:
1944: /*
1945: * rcs_parse_deltatext()
1946: *
1947: * Parse an RCS delta text section and fill in the log and text field of the
1948: * appropriate delta section.
1949: * Returns 1 if the section was parsed OK, 0 if it is the last delta, and
1950: * -1 on error.
1951: */
1952: static int
1953: rcs_parse_deltatext(RCSFILE *rfp)
1954: {
1955: int tok;
1956: RCSNUM *tnum;
1957: struct rcs_delta *rdp;
1958:
1959: tok = rcs_gettok(rfp);
1960: if (tok == RCS_TOK_EOF)
1961: return (0);
1962:
1963: if (tok != RCS_TOK_NUM) {
1.50 jfb 1964: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 1965: cvs_log(LP_ERR,
1966: "unexpected token `%s' at start of RCS delta text",
1967: RCS_TOKSTR(rfp));
1968: return (-1);
1969: }
1.13 jfb 1970:
1971: tnum = rcsnum_alloc();
1972: if (tnum == NULL)
1973: return (-1);
1.1 jfb 1974: rcsnum_aton(RCS_TOKSTR(rfp), NULL, tnum);
1975:
1976: TAILQ_FOREACH(rdp, &(rfp->rf_delta), rd_list) {
1977: if (rcsnum_cmp(tnum, rdp->rd_num, 0) == 0)
1978: break;
1979: }
1.13 jfb 1980: rcsnum_free(tnum);
1981:
1.1 jfb 1982: if (rdp == NULL) {
1983: cvs_log(LP_ERR, "RCS delta text `%s' has no matching delta",
1984: RCS_TOKSTR(rfp));
1985: return (-1);
1986: }
1987:
1988: tok = rcs_gettok(rfp);
1989: if (tok != RCS_TOK_LOG) {
1.50 jfb 1990: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 1991: cvs_log(LP_ERR, "unexpected token `%s' where RCS log expected",
1992: RCS_TOKSTR(rfp));
1993: return (-1);
1994: }
1995:
1996: tok = rcs_gettok(rfp);
1997: if (tok != RCS_TOK_STRING) {
1.50 jfb 1998: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 1999: cvs_log(LP_ERR, "unexpected token `%s' where RCS log expected",
2000: RCS_TOKSTR(rfp));
2001: return (-1);
2002: }
1.39 joris 2003: rdp->rd_log = cvs_strdup(RCS_TOKSTR(rfp));
1.1 jfb 2004: if (rdp->rd_log == NULL) {
2005: cvs_log(LP_ERRNO, "failed to copy RCS deltatext log");
2006: return (-1);
2007: }
2008:
2009: tok = rcs_gettok(rfp);
2010: if (tok != RCS_TOK_TEXT) {
1.50 jfb 2011: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 2012: cvs_log(LP_ERR, "unexpected token `%s' where RCS text expected",
2013: RCS_TOKSTR(rfp));
2014: return (-1);
2015: }
2016:
2017: tok = rcs_gettok(rfp);
2018: if (tok != RCS_TOK_STRING) {
1.50 jfb 2019: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 2020: cvs_log(LP_ERR, "unexpected token `%s' where RCS text expected",
2021: RCS_TOKSTR(rfp));
2022: return (-1);
2023: }
2024:
1.45 jfb 2025: rdp->rd_text = (u_char *)malloc(RCS_TOKLEN(rfp));
1.1 jfb 2026: if (rdp->rd_text == NULL) {
2027: cvs_log(LP_ERRNO, "failed to copy RCS delta text");
2028: return (-1);
2029: }
1.45 jfb 2030: memcpy(rdp->rd_text, RCS_TOKSTR(rfp), RCS_TOKLEN(rfp));
1.42 jfb 2031: rdp->rd_tlen = RCS_TOKLEN(rfp);
1.1 jfb 2032:
2033: return (1);
2034: }
2035:
2036: /*
2037: * rcs_parse_access()
2038: *
2039: * Parse the access list given as value to the `access' keyword.
2040: * Returns 0 on success, or -1 on failure.
2041: */
2042: static int
2043: rcs_parse_access(RCSFILE *rfp)
2044: {
2045: int type;
2046:
2047: while ((type = rcs_gettok(rfp)) != RCS_TOK_SCOLON) {
2048: if (type != RCS_TOK_ID) {
1.50 jfb 2049: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 2050: cvs_log(LP_ERR, "unexpected token `%s' in access list",
2051: RCS_TOKSTR(rfp));
2052: return (-1);
2053: }
1.29 jfb 2054:
2055: if (rcs_access_add(rfp, RCS_TOKSTR(rfp)) < 0)
2056: return (-1);
1.1 jfb 2057: }
2058:
2059: return (0);
2060: }
2061:
2062: /*
2063: * rcs_parse_symbols()
2064: *
2065: * Parse the symbol list given as value to the `symbols' keyword.
2066: * Returns 0 on success, or -1 on failure.
2067: */
2068: static int
2069: rcs_parse_symbols(RCSFILE *rfp)
2070: {
2071: int type;
2072: struct rcs_sym *symp;
2073:
2074: for (;;) {
2075: type = rcs_gettok(rfp);
2076: if (type == RCS_TOK_SCOLON)
2077: break;
2078:
1.41 jfb 2079: if (type != RCS_TOK_ID) {
1.50 jfb 2080: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 2081: cvs_log(LP_ERR, "unexpected token `%s' in symbol list",
2082: RCS_TOKSTR(rfp));
2083: return (-1);
2084: }
2085:
2086: symp = (struct rcs_sym *)malloc(sizeof(*symp));
2087: if (symp == NULL) {
1.50 jfb 2088: rcs_errno = RCS_ERR_ERRNO;
1.1 jfb 2089: cvs_log(LP_ERRNO, "failed to allocate RCS symbol");
2090: return (-1);
2091: }
1.39 joris 2092: symp->rs_name = cvs_strdup(RCS_TOKSTR(rfp));
1.10 joris 2093: if (symp->rs_name == NULL) {
2094: cvs_log(LP_ERRNO, "failed to duplicate rcs token");
2095: free(symp);
2096: return (-1);
2097: }
2098:
1.1 jfb 2099: symp->rs_num = rcsnum_alloc();
1.11 joris 2100: if (symp->rs_num == NULL) {
2101: cvs_log(LP_ERRNO, "failed to allocate rcsnum info");
1.39 joris 2102: cvs_strfree(symp->rs_name);
1.11 joris 2103: free(symp);
2104: return (-1);
2105: }
1.1 jfb 2106:
2107: type = rcs_gettok(rfp);
2108: if (type != RCS_TOK_COLON) {
1.50 jfb 2109: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 2110: cvs_log(LP_ERR, "unexpected token `%s' in symbol list",
2111: RCS_TOKSTR(rfp));
1.11 joris 2112: rcsnum_free(symp->rs_num);
1.39 joris 2113: cvs_strfree(symp->rs_name);
1.1 jfb 2114: free(symp);
2115: return (-1);
2116: }
2117:
2118: type = rcs_gettok(rfp);
2119: if (type != RCS_TOK_NUM) {
1.50 jfb 2120: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 2121: cvs_log(LP_ERR, "unexpected token `%s' in symbol list",
2122: RCS_TOKSTR(rfp));
1.11 joris 2123: rcsnum_free(symp->rs_num);
1.39 joris 2124: cvs_strfree(symp->rs_name);
1.1 jfb 2125: free(symp);
2126: return (-1);
2127: }
2128:
2129: if (rcsnum_aton(RCS_TOKSTR(rfp), NULL, symp->rs_num) < 0) {
2130: cvs_log(LP_ERR, "failed to parse RCS NUM `%s'",
2131: RCS_TOKSTR(rfp));
1.11 joris 2132: rcsnum_free(symp->rs_num);
1.39 joris 2133: cvs_strfree(symp->rs_name);
1.1 jfb 2134: free(symp);
2135: return (-1);
2136: }
2137:
1.43 jfb 2138: TAILQ_INSERT_TAIL(&(rfp->rf_symbols), symp, rs_list);
1.1 jfb 2139: }
2140:
2141: return (0);
2142: }
2143:
2144: /*
2145: * rcs_parse_locks()
2146: *
2147: * Parse the lock list given as value to the `locks' keyword.
2148: * Returns 0 on success, or -1 on failure.
2149: */
2150: static int
2151: rcs_parse_locks(RCSFILE *rfp)
2152: {
2153: int type;
2154: struct rcs_lock *lkp;
2155:
2156: for (;;) {
2157: type = rcs_gettok(rfp);
2158: if (type == RCS_TOK_SCOLON)
2159: break;
2160:
2161: if (type != RCS_TOK_ID) {
1.50 jfb 2162: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 2163: cvs_log(LP_ERR, "unexpected token `%s' in lock list",
2164: RCS_TOKSTR(rfp));
2165: return (-1);
2166: }
2167:
2168: lkp = (struct rcs_lock *)malloc(sizeof(*lkp));
2169: if (lkp == NULL) {
2170: cvs_log(LP_ERRNO, "failed to allocate RCS lock");
2171: return (-1);
2172: }
2173: lkp->rl_num = rcsnum_alloc();
1.11 joris 2174: if (lkp->rl_num == NULL) {
2175: free(lkp);
2176: return (-1);
2177: }
1.1 jfb 2178:
2179: type = rcs_gettok(rfp);
2180: if (type != RCS_TOK_COLON) {
1.50 jfb 2181: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 2182: cvs_log(LP_ERR, "unexpected token `%s' in symbol list",
2183: RCS_TOKSTR(rfp));
1.37 tedu 2184: rcsnum_free(lkp->rl_num);
1.1 jfb 2185: free(lkp);
2186: return (-1);
2187: }
2188:
2189: type = rcs_gettok(rfp);
2190: if (type != RCS_TOK_NUM) {
1.50 jfb 2191: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 2192: cvs_log(LP_ERR, "unexpected token `%s' in symbol list",
2193: RCS_TOKSTR(rfp));
1.37 tedu 2194: rcsnum_free(lkp->rl_num);
1.1 jfb 2195: free(lkp);
2196: return (-1);
2197: }
2198:
2199: if (rcsnum_aton(RCS_TOKSTR(rfp), NULL, lkp->rl_num) < 0) {
2200: cvs_log(LP_ERR, "failed to parse RCS NUM `%s'",
2201: RCS_TOKSTR(rfp));
1.37 tedu 2202: rcsnum_free(lkp->rl_num);
1.1 jfb 2203: free(lkp);
2204: return (-1);
2205: }
2206:
2207: TAILQ_INSERT_HEAD(&(rfp->rf_locks), lkp, rl_list);
2208: }
2209:
2210: /* check if we have a `strict' */
2211: type = rcs_gettok(rfp);
2212: if (type != RCS_TOK_STRICT) {
2213: rcs_pushtok(rfp, RCS_TOKSTR(rfp), type);
1.14 deraadt 2214: } else {
1.26 jfb 2215: rfp->rf_flags |= RCS_SLOCK;
1.1 jfb 2216:
2217: type = rcs_gettok(rfp);
2218: if (type != RCS_TOK_SCOLON) {
1.50 jfb 2219: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 2220: cvs_log(LP_ERR,
2221: "missing semi-colon after `strict' keyword");
2222: return (-1);
2223: }
2224: }
2225:
2226: return (0);
2227: }
2228:
2229: /*
2230: * rcs_parse_branches()
2231: *
2232: * Parse the list of branches following a `branches' keyword in a delta.
2233: * Returns 0 on success, or -1 on failure.
2234: */
2235: static int
2236: rcs_parse_branches(RCSFILE *rfp, struct rcs_delta *rdp)
2237: {
2238: int type;
2239: struct rcs_branch *brp;
2240:
2241: for (;;) {
2242: type = rcs_gettok(rfp);
2243: if (type == RCS_TOK_SCOLON)
2244: break;
2245:
2246: if (type != RCS_TOK_NUM) {
1.50 jfb 2247: rcs_errno = RCS_ERR_PARSE;
1.1 jfb 2248: cvs_log(LP_ERR,
2249: "unexpected token `%s' in list of branches",
2250: RCS_TOKSTR(rfp));
2251: return (-1);
2252: }
2253:
2254: brp = (struct rcs_branch *)malloc(sizeof(*brp));
2255: if (brp == NULL) {
1.50 jfb 2256: rcs_errno = RCS_ERR_ERRNO;
1.1 jfb 2257: cvs_log(LP_ERRNO, "failed to allocate RCS branch");
2258: return (-1);
2259: }
1.46 jfb 2260: brp->rb_num = rcsnum_parse(RCS_TOKSTR(rfp));
1.11 joris 2261: if (brp->rb_num == NULL) {
2262: free(brp);
2263: return (-1);
2264: }
1.1 jfb 2265:
2266: TAILQ_INSERT_TAIL(&(rdp->rd_branches), brp, rb_list);
2267: }
2268:
2269: return (0);
2270: }
2271:
2272: /*
2273: * rcs_freedelta()
2274: *
2275: * Free the contents of a delta structure.
2276: */
1.18 jfb 2277: static void
1.1 jfb 2278: rcs_freedelta(struct rcs_delta *rdp)
2279: {
1.12 jfb 2280: struct rcs_branch *rb;
1.1 jfb 2281: struct rcs_delta *crdp;
2282:
1.12 jfb 2283: if (rdp->rd_num != NULL)
2284: rcsnum_free(rdp->rd_num);
2285: if (rdp->rd_next != NULL)
2286: rcsnum_free(rdp->rd_next);
2287:
1.1 jfb 2288: if (rdp->rd_author != NULL)
1.39 joris 2289: cvs_strfree(rdp->rd_author);
1.1 jfb 2290: if (rdp->rd_state != NULL)
1.39 joris 2291: cvs_strfree(rdp->rd_state);
1.1 jfb 2292: if (rdp->rd_log != NULL)
1.39 joris 2293: cvs_strfree(rdp->rd_log);
1.1 jfb 2294: if (rdp->rd_text != NULL)
1.45 jfb 2295: free(rdp->rd_text);
1.12 jfb 2296:
2297: while ((rb = TAILQ_FIRST(&(rdp->rd_branches))) != NULL) {
2298: TAILQ_REMOVE(&(rdp->rd_branches), rb, rb_list);
2299: rcsnum_free(rb->rb_num);
2300: free(rb);
2301: }
1.1 jfb 2302:
2303: while ((crdp = TAILQ_FIRST(&(rdp->rd_snodes))) != NULL) {
2304: TAILQ_REMOVE(&(rdp->rd_snodes), crdp, rd_list);
2305: rcs_freedelta(crdp);
2306: }
2307:
2308: free(rdp);
2309: }
2310:
2311: /*
2312: * rcs_freepdata()
2313: *
2314: * Free the contents of the parser data structure.
2315: */
2316: static void
2317: rcs_freepdata(struct rcs_pdata *pd)
2318: {
2319: if (pd->rp_file != NULL)
2320: (void)fclose(pd->rp_file);
2321: if (pd->rp_buf != NULL)
2322: free(pd->rp_buf);
2323: free(pd);
2324: }
2325:
2326: /*
2327: * rcs_gettok()
2328: *
2329: * Get the next RCS token from the string <str>.
2330: */
2331: static int
2332: rcs_gettok(RCSFILE *rfp)
2333: {
2334: u_int i;
2335: int ch, last, type;
1.18 jfb 2336: size_t len;
2337: char *bp;
1.1 jfb 2338: struct rcs_pdata *pdp = (struct rcs_pdata *)rfp->rf_pdata;
2339:
2340: type = RCS_TOK_ERR;
2341: bp = pdp->rp_buf;
1.42 jfb 2342: pdp->rp_tlen = 0;
1.1 jfb 2343: *bp = '\0';
2344:
2345: if (pdp->rp_pttype != RCS_TOK_ERR) {
2346: type = pdp->rp_pttype;
2347: strlcpy(pdp->rp_buf, pdp->rp_ptok, pdp->rp_blen);
2348: pdp->rp_pttype = RCS_TOK_ERR;
2349: return (type);
2350: }
2351:
2352: /* skip leading whitespace */
2353: /* XXX we must skip backspace too for compatibility, should we? */
2354: do {
2355: ch = getc(pdp->rp_file);
2356: if (ch == '\n')
1.18 jfb 2357: pdp->rp_lines++;
1.1 jfb 2358: } while (isspace(ch));
2359:
2360: if (ch == EOF) {
2361: type = RCS_TOK_EOF;
1.14 deraadt 2362: } else if (ch == ';') {
1.1 jfb 2363: type = RCS_TOK_SCOLON;
1.14 deraadt 2364: } else if (ch == ':') {
1.1 jfb 2365: type = RCS_TOK_COLON;
1.14 deraadt 2366: } else if (isalpha(ch)) {
1.31 jfb 2367: type = RCS_TOK_ID;
1.1 jfb 2368: *(bp++) = ch;
1.18 jfb 2369: for (;;) {
1.1 jfb 2370: ch = getc(pdp->rp_file);
1.11 joris 2371: if (!isalnum(ch) && ch != '_' && ch != '-') {
1.1 jfb 2372: ungetc(ch, pdp->rp_file);
2373: break;
2374: }
2375: *(bp++) = ch;
1.42 jfb 2376: pdp->rp_tlen++;
1.18 jfb 2377: if (bp == pdp->rp_bufend - 1) {
2378: len = bp - pdp->rp_buf;
2379: if (rcs_growbuf(rfp) < 0) {
2380: type = RCS_TOK_ERR;
2381: break;
2382: }
2383: bp = pdp->rp_buf + len;
2384: }
1.1 jfb 2385: }
2386: *bp = '\0';
2387:
1.18 jfb 2388: if (type != RCS_TOK_ERR) {
2389: for (i = 0; i < RCS_NKEYS; i++) {
2390: if (strcmp(rcs_keys[i].rk_str,
2391: pdp->rp_buf) == 0) {
2392: type = rcs_keys[i].rk_id;
2393: break;
2394: }
1.1 jfb 2395: }
2396: }
1.14 deraadt 2397: } else if (ch == '@') {
1.1 jfb 2398: /* we have a string */
1.18 jfb 2399: type = RCS_TOK_STRING;
1.1 jfb 2400: for (;;) {
2401: ch = getc(pdp->rp_file);
2402: if (ch == '@') {
2403: ch = getc(pdp->rp_file);
2404: if (ch != '@') {
2405: ungetc(ch, pdp->rp_file);
2406: break;
2407: }
1.14 deraadt 2408: } else if (ch == '\n')
1.18 jfb 2409: pdp->rp_lines++;
1.1 jfb 2410:
2411: *(bp++) = ch;
1.42 jfb 2412: pdp->rp_tlen++;
1.18 jfb 2413: if (bp == pdp->rp_bufend - 1) {
2414: len = bp - pdp->rp_buf;
2415: if (rcs_growbuf(rfp) < 0) {
2416: type = RCS_TOK_ERR;
2417: break;
2418: }
2419: bp = pdp->rp_buf + len;
2420: }
1.1 jfb 2421: }
2422:
2423: *bp = '\0';
1.14 deraadt 2424: } else if (isdigit(ch)) {
1.1 jfb 2425: *(bp++) = ch;
2426: last = ch;
2427: type = RCS_TOK_NUM;
2428:
2429: for (;;) {
2430: ch = getc(pdp->rp_file);
1.18 jfb 2431: if (bp == pdp->rp_bufend)
1.1 jfb 2432: break;
2433: if (!isdigit(ch) && ch != '.') {
2434: ungetc(ch, pdp->rp_file);
2435: break;
2436: }
2437:
2438: if (last == '.' && ch == '.') {
2439: type = RCS_TOK_ERR;
2440: break;
2441: }
2442: last = ch;
2443: *(bp++) = ch;
1.42 jfb 2444: pdp->rp_tlen++;
1.1 jfb 2445: }
1.18 jfb 2446: *bp = '\0';
1.1 jfb 2447: }
2448:
2449: return (type);
2450: }
2451:
2452: /*
2453: * rcs_pushtok()
2454: *
2455: * Push a token back in the parser's token buffer.
2456: */
2457: static int
2458: rcs_pushtok(RCSFILE *rfp, const char *tok, int type)
2459: {
2460: struct rcs_pdata *pdp = (struct rcs_pdata *)rfp->rf_pdata;
2461:
2462: if (pdp->rp_pttype != RCS_TOK_ERR)
2463: return (-1);
2464:
2465: pdp->rp_pttype = type;
2466: strlcpy(pdp->rp_ptok, tok, sizeof(pdp->rp_ptok));
2467: return (0);
2468: }
2469:
2470:
2471: /*
2472: * rcs_splitlines()
2473: *
2474: * Split the contents of a file into a list of lines.
2475: */
2476: static struct rcs_foo*
2477: rcs_splitlines(const char *fcont)
2478: {
2479: char *dcp;
2480: struct rcs_foo *foo;
2481: struct rcs_line *lp;
2482:
2483: foo = (struct rcs_foo *)malloc(sizeof(*foo));
2484: if (foo == NULL) {
2485: cvs_log(LP_ERR, "failed to allocate line structure");
2486: return (NULL);
2487: }
2488: TAILQ_INIT(&(foo->rl_lines));
2489: foo->rl_nblines = 0;
2490: foo->rl_data = strdup(fcont);
2491: if (foo->rl_data == NULL) {
2492: cvs_log(LP_ERRNO, "failed to copy file contents");
2493: free(foo);
2494: return (NULL);
2495: }
2496:
2497: /*
2498: * Add a first bogus line with line number 0. This is used so we
2499: * can position the line pointer before 1 when changing the first line
2500: * in rcs_patch().
2501: */
2502: lp = (struct rcs_line *)malloc(sizeof(*lp));
1.38 joris 2503: if (lp == NULL) {
2504: rcs_freefoo(foo);
1.1 jfb 2505: return (NULL);
1.38 joris 2506: }
1.5 vincent 2507:
1.1 jfb 2508: lp->rl_line = NULL;
2509: lp->rl_lineno = 0;
2510: TAILQ_INSERT_TAIL(&(foo->rl_lines), lp, rl_list);
2511:
2512:
2513: for (dcp = foo->rl_data; *dcp != '\0';) {
2514: lp = (struct rcs_line *)malloc(sizeof(*lp));
2515: if (lp == NULL) {
1.38 joris 2516: rcs_freefoo(foo);
1.1 jfb 2517: cvs_log(LP_ERR, "failed to allocate line entry");
2518: return (NULL);
2519: }
2520:
2521: lp->rl_line = dcp;
2522: lp->rl_lineno = ++(foo->rl_nblines);
2523: TAILQ_INSERT_TAIL(&(foo->rl_lines), lp, rl_list);
2524:
2525: dcp = strchr(dcp, '\n');
2526: if (dcp == NULL) {
2527: break;
2528: }
2529: *(dcp++) = '\0';
2530: }
2531:
2532: return (foo);
1.5 vincent 2533: }
2534:
2535: static void
2536: rcs_freefoo(struct rcs_foo *fp)
2537: {
2538: struct rcs_line *lp;
2539:
2540: while ((lp = TAILQ_FIRST(&fp->rl_lines)) != NULL) {
2541: TAILQ_REMOVE(&fp->rl_lines, lp, rl_list);
2542: free(lp);
2543: }
2544: free(fp->rl_data);
2545: free(fp);
1.18 jfb 2546: }
2547:
2548: /*
2549: * rcs_growbuf()
2550: *
2551: * Attempt to grow the internal parse buffer for the RCS file <rf> by
2552: * RCS_BUFEXTSIZE.
2553: * In case of failure, the original buffer is left unmodified.
2554: * Returns 0 on success, or -1 on failure.
2555: */
2556: static int
2557: rcs_growbuf(RCSFILE *rf)
2558: {
2559: void *tmp;
2560: struct rcs_pdata *pdp = (struct rcs_pdata *)rf->rf_pdata;
2561:
2562: tmp = realloc(pdp->rp_buf, pdp->rp_blen + RCS_BUFEXTSIZE);
2563: if (tmp == NULL) {
1.50 jfb 2564: rcs_errno = RCS_ERR_ERRNO;
1.18 jfb 2565: cvs_log(LP_ERRNO, "failed to grow RCS parse buffer");
2566: return (-1);
2567: }
2568:
2569: pdp->rp_buf = (char *)tmp;
2570: pdp->rp_blen += RCS_BUFEXTSIZE;
2571: pdp->rp_bufend = pdp->rp_buf + pdp->rp_blen - 1;
1.42 jfb 2572:
2573: return (0);
2574: }
2575:
2576: /*
2577: * rcs_strprint()
2578: *
2579: * Output an RCS string <str> of size <slen> to the stream <stream>. Any
2580: * '@' characters are escaped. Otherwise, the string can contain arbitrary
2581: * binary data.
2582: */
2583: static int
2584: rcs_strprint(const u_char *str, size_t slen, FILE *stream)
2585: {
2586: const u_char *ap, *ep, *sp;
2587: size_t ret;
1.52 jfb 2588:
2589: if (slen == 0)
2590: return (0);
1.42 jfb 2591:
2592: ep = str + slen - 1;
2593:
2594: for (sp = str; sp <= ep;) {
2595: ap = memchr(sp, '@', ep - sp);
2596: if (ap == NULL)
2597: ap = ep;
2598: ret = fwrite(sp, sizeof(u_char), ap - sp + 1, stream);
2599:
2600: if (*ap == '@')
2601: putc('@', stream);
2602: sp = ap + 1;
2603: }
1.18 jfb 2604:
2605: return (0);
1.1 jfb 2606: }
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