File: [local] / src / usr.bin / cvs / rcs.c (download)
Revision 1.92, Tue Oct 18 01:08:13 2005 UTC (18 years, 7 months ago) by joris
Branch: MAIN
Changes since 1.91: +10 -1 lines
plug memleaks in rcs_rev_add() when an error occurs;
|
/* $OpenBSD: rcs.c,v 1.92 2005/10/18 01:08:13 joris Exp $ */
/*
* Copyright (c) 2004 Jean-Francois Brousseau <jfb@openbsd.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/param.h>
#include <sys/stat.h>
#include <ctype.h>
#include <errno.h>
#include <fcntl.h>
#include <libgen.h>
#include <pwd.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "log.h"
#include "rcs.h"
#include "diff.h"
#include "strtab.h"
#define RCS_BUFSIZE 16384
#define RCS_BUFEXTSIZE 8192
/* RCS token types */
#define RCS_TOK_ERR -1
#define RCS_TOK_EOF 0
#define RCS_TOK_NUM 1
#define RCS_TOK_ID 2
#define RCS_TOK_STRING 3
#define RCS_TOK_SCOLON 4
#define RCS_TOK_COLON 5
#define RCS_TOK_HEAD 8
#define RCS_TOK_BRANCH 9
#define RCS_TOK_ACCESS 10
#define RCS_TOK_SYMBOLS 11
#define RCS_TOK_LOCKS 12
#define RCS_TOK_COMMENT 13
#define RCS_TOK_EXPAND 14
#define RCS_TOK_DATE 15
#define RCS_TOK_AUTHOR 16
#define RCS_TOK_STATE 17
#define RCS_TOK_NEXT 18
#define RCS_TOK_BRANCHES 19
#define RCS_TOK_DESC 20
#define RCS_TOK_LOG 21
#define RCS_TOK_TEXT 22
#define RCS_TOK_STRICT 23
#define RCS_ISKEY(t) (((t) >= RCS_TOK_HEAD) && ((t) <= RCS_TOK_BRANCHES))
#define RCS_NOSCOL 0x01 /* no terminating semi-colon */
#define RCS_VOPT 0x02 /* value is optional */
/* opaque parse data */
struct rcs_pdata {
u_int rp_lines;
char *rp_buf;
size_t rp_blen;
char *rp_bufend;
size_t rp_tlen;
/* pushback token buffer */
char rp_ptok[128];
int rp_pttype; /* token type, RCS_TOK_ERR if no token */
FILE *rp_file;
};
struct rcs_line {
char *rl_line;
int rl_lineno;
TAILQ_ENTRY(rcs_line) rl_list;
};
TAILQ_HEAD(rcs_tqh, rcs_line);
struct rcs_foo {
int rl_nblines;
char *rl_data;
struct rcs_tqh rl_lines;
};
#define RCS_TOKSTR(rfp) ((struct rcs_pdata *)rfp->rf_pdata)->rp_buf
#define RCS_TOKLEN(rfp) ((struct rcs_pdata *)rfp->rf_pdata)->rp_tlen
/* invalid characters in RCS symbol names */
static const char rcs_sym_invch[] = RCS_SYM_INVALCHAR;
/* comment leaders, depending on the file's suffix */
static const struct rcs_comment {
const char *rc_suffix;
const char *rc_cstr;
} rcs_comments[] = {
{ "1", ".\\\" " },
{ "2", ".\\\" " },
{ "3", ".\\\" " },
{ "4", ".\\\" " },
{ "5", ".\\\" " },
{ "6", ".\\\" " },
{ "7", ".\\\" " },
{ "8", ".\\\" " },
{ "9", ".\\\" " },
{ "a", "-- " }, /* Ada */
{ "ada", "-- " },
{ "adb", "-- " },
{ "asm", ";; " }, /* assembler (MS-DOS) */
{ "ads", "-- " }, /* Ada */
{ "bat", ":: " }, /* batch (MS-DOS) */
{ "body", "-- " }, /* Ada */
{ "c", " * " }, /* C */
{ "c++", "// " }, /* C++ */
{ "cc", "// " },
{ "cpp", "// " },
{ "cxx", "// " },
{ "m", "// " }, /* Objective-C */
{ "cl", ";;; " }, /* Common Lisp */
{ "cmd", ":: " }, /* command (OS/2) */
{ "cmf", "c " }, /* CM Fortran */
{ "csh", "# " }, /* shell */
{ "e", "# " }, /* efl */
{ "epsf", "% " }, /* encapsulated postscript */
{ "epsi", "% " }, /* encapsulated postscript */
{ "el", "; " }, /* Emacs Lisp */
{ "f", "c " }, /* Fortran */
{ "for", "c " },
{ "h", " * " }, /* C-header */
{ "hh", "// " }, /* C++ header */
{ "hpp", "// " },
{ "hxx", "// " },
{ "in", "# " }, /* for Makefile.in */
{ "l", " * " }, /* lex */
{ "mac", ";; " }, /* macro (DEC-10, MS-DOS, PDP-11, VMS, etc) */
{ "mak", "# " }, /* makefile, e.g. Visual C++ */
{ "me", ".\\\" " }, /* me-macros t/nroff */
{ "ml", "; " }, /* mocklisp */
{ "mm", ".\\\" " }, /* mm-macros t/nroff */
{ "ms", ".\\\" " }, /* ms-macros t/nroff */
{ "man", ".\\\" " }, /* man-macros t/nroff */
{ "p", " * " }, /* pascal */
{ "pas", " * " },
{ "pl", "# " }, /* Perl (conflict with Prolog) */
{ "pm", "# " }, /* Perl module */
{ "ps", "% " }, /* postscript */
{ "psw", "% " }, /* postscript wrap */
{ "pswm", "% " }, /* postscript wrap */
{ "r", "# " }, /* ratfor */
{ "rc", " * " }, /* Microsoft Windows resource file */
{ "red", "% " }, /* psl/rlisp */
{ "sh", "# " }, /* shell */
{ "sl", "% " }, /* psl */
{ "spec", "-- " }, /* Ada */
{ "tex", "% " }, /* tex */
{ "y", " * " }, /* yacc */
{ "ye", " * " }, /* yacc-efl */
{ "yr", " * " }, /* yacc-ratfor */
};
#define NB_COMTYPES (sizeof(rcs_comments)/sizeof(rcs_comments[0]))
#ifdef notyet
static struct rcs_kfl {
char rk_char;
int rk_val;
} rcs_kflags[] = {
{ 'k', RCS_KWEXP_NAME },
{ 'v', RCS_KWEXP_VAL },
{ 'l', RCS_KWEXP_LKR },
{ 'o', RCS_KWEXP_OLD },
{ 'b', RCS_KWEXP_NONE },
};
#endif
static struct rcs_key {
char rk_str[16];
int rk_id;
int rk_val;
int rk_flags;
} rcs_keys[] = {
{ "access", RCS_TOK_ACCESS, RCS_TOK_ID, RCS_VOPT },
{ "author", RCS_TOK_AUTHOR, RCS_TOK_ID, 0 },
{ "branch", RCS_TOK_BRANCH, RCS_TOK_NUM, RCS_VOPT },
{ "branches", RCS_TOK_BRANCHES, RCS_TOK_NUM, RCS_VOPT },
{ "comment", RCS_TOK_COMMENT, RCS_TOK_STRING, RCS_VOPT },
{ "date", RCS_TOK_DATE, RCS_TOK_NUM, 0 },
{ "desc", RCS_TOK_DESC, RCS_TOK_STRING, RCS_NOSCOL },
{ "expand", RCS_TOK_EXPAND, RCS_TOK_STRING, RCS_VOPT },
{ "head", RCS_TOK_HEAD, RCS_TOK_NUM, RCS_VOPT },
{ "locks", RCS_TOK_LOCKS, RCS_TOK_ID, 0 },
{ "log", RCS_TOK_LOG, RCS_TOK_STRING, RCS_NOSCOL },
{ "next", RCS_TOK_NEXT, RCS_TOK_NUM, RCS_VOPT },
{ "state", RCS_TOK_STATE, RCS_TOK_ID, RCS_VOPT },
{ "strict", RCS_TOK_STRICT, 0, 0, },
{ "symbols", RCS_TOK_SYMBOLS, 0, 0 },
{ "text", RCS_TOK_TEXT, RCS_TOK_STRING, RCS_NOSCOL },
};
#define RCS_NKEYS (sizeof(rcs_keys)/sizeof(rcs_keys[0]))
/*
* Keyword expansion table
*/
#define RCS_KW_AUTHOR 0x1000
#define RCS_KW_DATE 0x2000
#define RCS_KW_LOG 0x4000
#define RCS_KW_NAME 0x8000
#define RCS_KW_RCSFILE 0x0100
#define RCS_KW_REVISION 0x0200
#define RCS_KW_SOURCE 0x0400
#define RCS_KW_STATE 0x0800
#define RCS_KW_FULLPATH 0x0010
#define RCS_KW_ID \
(RCS_KW_RCSFILE | RCS_KW_REVISION | RCS_KW_DATE \
| RCS_KW_AUTHOR | RCS_KW_STATE)
#define RCS_KW_HEADER (RCS_KW_ID | RCS_KW_FULLPATH)
static struct rcs_kw {
char kw_str[16];
int kw_type;
} rcs_expkw[] = {
{ "Author", RCS_KW_AUTHOR },
{ "Date", RCS_KW_DATE },
{ "Header", RCS_KW_HEADER },
{ "Id", RCS_KW_ID },
{ "Log", RCS_KW_LOG },
{ "Name", RCS_KW_NAME },
{ "RCSfile", RCS_KW_RCSFILE },
{ "Revision", RCS_KW_REVISION },
{ "Source", RCS_KW_SOURCE },
{ "State", RCS_KW_STATE },
};
#define RCS_NKWORDS (sizeof(rcs_expkw)/sizeof(rcs_expkw[0]))
static const char *rcs_errstrs[] = {
"No error",
"No such entry",
"Duplicate entry found",
"Bad RCS number",
"Invalid RCS symbol",
"Parse error",
};
#define RCS_NERR (sizeof(rcs_errstrs)/sizeof(rcs_errstrs[0]))
int rcs_errno = RCS_ERR_NOERR;
static int rcs_write(RCSFILE *);
static int rcs_parse(RCSFILE *);
static int rcs_parse_admin(RCSFILE *);
static int rcs_parse_delta(RCSFILE *);
static int rcs_parse_deltatext(RCSFILE *);
static int rcs_parse_access(RCSFILE *);
static int rcs_parse_symbols(RCSFILE *);
static int rcs_parse_locks(RCSFILE *);
static int rcs_parse_branches(RCSFILE *, struct rcs_delta *);
static void rcs_freedelta(struct rcs_delta *);
static void rcs_freepdata(struct rcs_pdata *);
static int rcs_gettok(RCSFILE *);
static int rcs_pushtok(RCSFILE *, const char *, int);
static int rcs_growbuf(RCSFILE *);
static int rcs_patch_lines(struct rcs_foo *, struct rcs_foo *);
static int rcs_strprint(const u_char *, size_t, FILE *);
static int rcs_expand_keywords(char *, struct rcs_delta *, char *, char *,
size_t, int);
static struct rcs_delta *rcs_findrev(RCSFILE *, const RCSNUM *);
static struct rcs_foo *rcs_splitlines(const char *);
static void rcs_freefoo(struct rcs_foo *);
/*
* rcs_open()
*
* Open a file containing RCS-formatted information. The file's path is
* given in <path>, and the opening flags are given in <flags>, which is either
* RCS_READ, RCS_WRITE, or RCS_RDWR. If the open requests write access and
* the file does not exist, the RCS_CREATE flag must also be given, in which
* case it will be created with the mode specified in a third argument of
* type mode_t. If the file exists and RCS_CREATE is passed, the open will
* fail.
* Returns a handle to the opened file on success, or NULL on failure.
*/
RCSFILE *
rcs_open(const char *path, int flags, ...)
{
int ret;
mode_t fmode;
RCSFILE *rfp;
struct stat st;
va_list vap;
fmode = 0;
flags &= 0xffff; /* ditch any internal flags */
if (((ret = stat(path, &st)) == -1) && (errno == ENOENT)) {
if (flags & RCS_CREATE) {
va_start(vap, flags);
fmode = va_arg(vap, mode_t);
va_end(vap);
} else {
rcs_errno = RCS_ERR_ERRNO;
cvs_log(LP_ERR, "RCS file `%s' does not exist", path);
return (NULL);
}
} else if ((ret == 0) && (flags & RCS_CREATE)) {
cvs_log(LP_ERR, "RCS file `%s' exists", path);
return (NULL);
}
if ((rfp = (RCSFILE *)malloc(sizeof(*rfp))) == NULL) {
cvs_log(LP_ERRNO, "failed to allocate RCS file structure");
rcs_errno = RCS_ERR_ERRNO;
return (NULL);
}
memset(rfp, 0, sizeof(*rfp));
if ((rfp->rf_path = strdup(path)) == NULL) {
rcs_errno = RCS_ERR_ERRNO;
cvs_log(LP_ERRNO, "failed to duplicate RCS file path");
free(rfp);
return (NULL);
}
rfp->rf_ref = 1;
rfp->rf_flags = flags | RCS_SLOCK;
rfp->rf_mode = fmode;
TAILQ_INIT(&(rfp->rf_delta));
TAILQ_INIT(&(rfp->rf_access));
TAILQ_INIT(&(rfp->rf_symbols));
TAILQ_INIT(&(rfp->rf_locks));
if (rfp->rf_flags & RCS_CREATE) {
} else if (rcs_parse(rfp) < 0) {
rcs_close(rfp);
return (NULL);
}
return (rfp);
}
/*
* rcs_close()
*
* Close an RCS file handle.
*/
void
rcs_close(RCSFILE *rfp)
{
struct rcs_delta *rdp;
struct rcs_access *rap;
struct rcs_lock *rlp;
struct rcs_sym *rsp;
if (rfp->rf_ref > 1) {
rfp->rf_ref--;
return;
}
if ((rfp->rf_flags & RCS_WRITE) && !(rfp->rf_flags & RCS_SYNCED))
rcs_write(rfp);
while (!TAILQ_EMPTY(&(rfp->rf_delta))) {
rdp = TAILQ_FIRST(&(rfp->rf_delta));
TAILQ_REMOVE(&(rfp->rf_delta), rdp, rd_list);
rcs_freedelta(rdp);
}
while (!TAILQ_EMPTY(&(rfp->rf_access))) {
rap = TAILQ_FIRST(&(rfp->rf_access));
TAILQ_REMOVE(&(rfp->rf_access), rap, ra_list);
cvs_strfree(rap->ra_name);
free(rap);
}
while (!TAILQ_EMPTY(&(rfp->rf_symbols))) {
rsp = TAILQ_FIRST(&(rfp->rf_symbols));
TAILQ_REMOVE(&(rfp->rf_symbols), rsp, rs_list);
rcsnum_free(rsp->rs_num);
cvs_strfree(rsp->rs_name);
free(rsp);
}
while (!TAILQ_EMPTY(&(rfp->rf_locks))) {
rlp = TAILQ_FIRST(&(rfp->rf_locks));
TAILQ_REMOVE(&(rfp->rf_locks), rlp, rl_list);
rcsnum_free(rlp->rl_num);
cvs_strfree(rlp->rl_name);
free(rlp);
}
if (rfp->rf_head != NULL)
rcsnum_free(rfp->rf_head);
if (rfp->rf_branch != NULL)
rcsnum_free(rfp->rf_branch);
if (rfp->rf_path != NULL)
free(rfp->rf_path);
if (rfp->rf_comment != NULL)
cvs_strfree(rfp->rf_comment);
if (rfp->rf_expand != NULL)
cvs_strfree(rfp->rf_expand);
if (rfp->rf_desc != NULL)
cvs_strfree(rfp->rf_desc);
free(rfp);
}
/*
* rcs_write()
*
* Write the contents of the RCS file handle <rfp> to disk in the file whose
* path is in <rf_path>.
* Returns 0 on success, or -1 on failure.
*/
static int
rcs_write(RCSFILE *rfp)
{
FILE *fp;
char buf[1024], numbuf[64], fn[19] = "";
void *bp;
struct rcs_access *ap;
struct rcs_sym *symp;
struct rcs_branch *brp;
struct rcs_delta *rdp;
struct rcs_lock *lkp;
ssize_t nread;
int fd, from_fd, to_fd;
from_fd = to_fd = fd = -1;
if (rfp->rf_flags & RCS_SYNCED)
return (0);
strlcpy(fn, "/tmp/rcs.XXXXXXXXXX", sizeof(fn));
if ((fd = mkstemp(fn)) == -1 ||
(fp = fdopen(fd, "w+")) == NULL) {
if (fd != -1) {
unlink(fn);
close(fd);
}
rcs_errno = RCS_ERR_ERRNO;
cvs_log(LP_ERRNO, "failed to open temp RCS output file `%s'",
fn);
return (-1);
}
if (rfp->rf_head != NULL)
rcsnum_tostr(rfp->rf_head, numbuf, sizeof(numbuf));
else
numbuf[0] = '\0';
fprintf(fp, "head\t%s;\n", numbuf);
if (rfp->rf_branch != NULL) {
rcsnum_tostr(rfp->rf_branch, numbuf, sizeof(numbuf));
fprintf(fp, "branch\t%s;\n", numbuf);
}
fputs("access", fp);
TAILQ_FOREACH(ap, &(rfp->rf_access), ra_list) {
fprintf(fp, "\n\t%s", ap->ra_name);
}
fputs(";\n", fp);
fprintf(fp, "symbols");
TAILQ_FOREACH(symp, &(rfp->rf_symbols), rs_list) {
rcsnum_tostr(symp->rs_num, numbuf, sizeof(numbuf));
snprintf(buf, sizeof(buf), "%s:%s", symp->rs_name, numbuf);
fprintf(fp, "\n\t%s", buf);
}
fprintf(fp, ";\n");
fprintf(fp, "locks");
TAILQ_FOREACH(lkp, &(rfp->rf_locks), rl_list) {
rcsnum_tostr(lkp->rl_num, numbuf, sizeof(numbuf));
fprintf(fp, "\n\t%s:%s", lkp->rl_name, numbuf);
}
fprintf(fp, ";");
if (rfp->rf_flags & RCS_SLOCK)
fprintf(fp, " strict;");
fputc('\n', fp);
if (rfp->rf_comment != NULL) {
fputs("comment\t@", fp);
rcs_strprint((const u_char *)rfp->rf_comment,
strlen(rfp->rf_comment), fp);
fputs("@;\n", fp);
}
if (rfp->rf_expand != NULL) {
fputs("expand @", fp);
rcs_strprint((const u_char *)rfp->rf_expand,
strlen(rfp->rf_expand), fp);
fputs("@;\n", fp);
}
fputs("\n\n", fp);
TAILQ_FOREACH(rdp, &(rfp->rf_delta), rd_list) {
fprintf(fp, "%s\n", rcsnum_tostr(rdp->rd_num, numbuf,
sizeof(numbuf)));
fprintf(fp, "date\t%d.%02d.%02d.%02d.%02d.%02d;",
rdp->rd_date.tm_year + 1900, rdp->rd_date.tm_mon + 1,
rdp->rd_date.tm_mday, rdp->rd_date.tm_hour,
rdp->rd_date.tm_min, rdp->rd_date.tm_sec);
fprintf(fp, "\tauthor %s;\tstate %s;\n",
rdp->rd_author, rdp->rd_state);
fputs("branches", fp);
TAILQ_FOREACH(brp, &(rdp->rd_branches), rb_list) {
fprintf(fp, " %s", rcsnum_tostr(brp->rb_num, numbuf,
sizeof(numbuf)));
}
fputs(";\n", fp);
fprintf(fp, "next\t%s;\n\n", rcsnum_tostr(rdp->rd_next,
numbuf, sizeof(numbuf)));
}
fputs("\ndesc\n@", fp);
if (rfp->rf_desc != NULL)
rcs_strprint((const u_char *)rfp->rf_desc,
strlen(rfp->rf_desc), fp);
fputs("@\n\n", fp);
/* deltatexts */
TAILQ_FOREACH(rdp, &(rfp->rf_delta), rd_list) {
fprintf(fp, "\n%s\n", rcsnum_tostr(rdp->rd_num, numbuf,
sizeof(numbuf)));
fputs("log\n@", fp);
rcs_strprint((const u_char *)rdp->rd_log,
strlen(rdp->rd_log), fp);
fputs("@\ntext\n@", fp);
rcs_strprint(rdp->rd_text, rdp->rd_tlen, fp);
fputs("@\n\n", fp);
}
fclose(fp);
/*
* We try to use rename() to atomically put the new file in place.
* If that fails, we try a copy.
*/
if (rename(fn, rfp->rf_path) == -1) {
if (errno == EXDEV) {
/* rename() not supported so we have to copy. */
if ((chmod(rfp->rf_path, S_IWUSR) == -1)
&& !(rfp->rf_flags & RCS_CREATE)) {
cvs_log(LP_ERRNO, "failed to chmod `%s'",
rfp->rf_path);
return (-1);
}
if ((from_fd = open(fn, O_RDONLY)) == -1) {
cvs_log(LP_ERRNO, "failed to open `%s'",
rfp->rf_path);
return (-1);
}
if ((to_fd = open(rfp->rf_path,
O_WRONLY|O_TRUNC|O_CREAT)) == -1) {
cvs_log(LP_ERRNO, "failed to open `%s'", fn);
close(from_fd);
return (-1);
}
if ((bp = malloc(MAXBSIZE)) == NULL) {
cvs_log(LP_ERRNO, "failed to allocate memory");
close(from_fd);
close(to_fd);
return (-1);
}
while ((nread = read(from_fd, bp, MAXBSIZE)) > 0) {
if (write(to_fd, bp, nread) != nread)
goto err;
}
if (nread < 0) {
err: if (unlink(rfp->rf_path) == -1)
cvs_log(LP_ERRNO,
"failed to unlink `%s'",
rfp->rf_path);
close(from_fd);
close(to_fd);
free(bp);
return (-1);
}
close(from_fd);
close(to_fd);
free(bp);
if (unlink(fn) == -1) {
cvs_log(LP_ERRNO,
"failed to unlink `%s'", fn);
return (-1);
}
} else {
cvs_log(LP_ERRNO,
"failed to access temp RCS output file");
return (-1);
}
}
if ((chmod(rfp->rf_path, S_IRUSR|S_IRGRP|S_IROTH) == -1)) {
cvs_log(LP_ERRNO, "failed to chmod `%s'",
rfp->rf_path);
return (-1);
}
rfp->rf_flags |= RCS_SYNCED;
return (0);
}
/*
* rcs_head_get()
*
* Retrieve the revision number of the head revision for the RCS file <file>.
*/
const RCSNUM *
rcs_head_get(RCSFILE *file)
{
return (file->rf_head);
}
/*
* rcs_head_set()
*
* Set the revision number of the head revision for the RCS file <file> to
* <rev>, which must reference a valid revision within the file.
*/
int
rcs_head_set(RCSFILE *file, const RCSNUM *rev)
{
struct rcs_delta *rd;
if ((rd = rcs_findrev(file, rev)) == NULL)
return (-1);
if ((file->rf_head == NULL) &&
((file->rf_head = rcsnum_alloc()) == NULL))
return (-1);
if (rcsnum_cpy(rev, file->rf_head, 0) < 0)
return (-1);
file->rf_flags &= ~RCS_SYNCED;
return (0);
}
/*
* rcs_branch_get()
*
* Retrieve the default branch number for the RCS file <file>.
* Returns the number on success. If NULL is returned, then there is no
* default branch for this file.
*/
const RCSNUM *
rcs_branch_get(RCSFILE *file)
{
return (file->rf_branch);
}
/*
* rcs_branch_set()
*
* Set the default branch for the RCS file <file> to <bnum>.
* Returns 0 on success, -1 on failure.
*/
int
rcs_branch_set(RCSFILE *file, const RCSNUM *bnum)
{
if ((file->rf_branch == NULL) &&
((file->rf_branch = rcsnum_alloc()) == NULL))
return (-1);
if (rcsnum_cpy(bnum, file->rf_branch, 0) < 0) {
rcsnum_free(file->rf_branch);
file->rf_branch = NULL;
return (-1);
}
file->rf_flags &= ~RCS_SYNCED;
return (0);
}
/*
* rcs_access_add()
*
* Add the login name <login> to the access list for the RCS file <file>.
* Returns 0 on success, or -1 on failure.
*/
int
rcs_access_add(RCSFILE *file, const char *login)
{
struct rcs_access *ap;
/* first look for duplication */
TAILQ_FOREACH(ap, &(file->rf_access), ra_list) {
if (strcmp(ap->ra_name, login) == 0) {
rcs_errno = RCS_ERR_DUPENT;
return (-1);
}
}
ap = (struct rcs_access *)malloc(sizeof(*ap));
if (ap == NULL) {
rcs_errno = RCS_ERR_ERRNO;
cvs_log(LP_ERRNO, "failed to allocate RCS access entry");
return (-1);
}
ap->ra_name = cvs_strdup(login);
if (ap->ra_name == NULL) {
cvs_log(LP_ERRNO, "failed to duplicate user name");
free(ap);
return (-1);
}
TAILQ_INSERT_TAIL(&(file->rf_access), ap, ra_list);
/* not synced anymore */
file->rf_flags &= ~RCS_SYNCED;
return (0);
}
/*
* rcs_access_remove()
*
* Remove an entry with login name <login> from the access list of the RCS
* file <file>.
* Returns 0 on success, or -1 on failure.
*/
int
rcs_access_remove(RCSFILE *file, const char *login)
{
struct rcs_access *ap;
TAILQ_FOREACH(ap, &(file->rf_access), ra_list)
if (strcmp(ap->ra_name, login) == 0)
break;
if (ap == NULL) {
rcs_errno = RCS_ERR_NOENT;
return (-1);
}
TAILQ_REMOVE(&(file->rf_access), ap, ra_list);
cvs_strfree(ap->ra_name);
free(ap);
/* not synced anymore */
file->rf_flags &= ~RCS_SYNCED;
return (0);
}
/*
* rcs_sym_add()
*
* Add a symbol to the list of symbols for the RCS file <rfp>. The new symbol
* is named <sym> and is bound to the RCS revision <snum>.
* Returns 0 on success, or -1 on failure.
*/
int
rcs_sym_add(RCSFILE *rfp, const char *sym, RCSNUM *snum)
{
struct rcs_sym *symp;
if (!rcs_sym_check(sym)) {
rcs_errno = RCS_ERR_BADSYM;
return (-1);
}
/* first look for duplication */
TAILQ_FOREACH(symp, &(rfp->rf_symbols), rs_list) {
if (strcmp(symp->rs_name, sym) == 0) {
rcs_errno = RCS_ERR_DUPENT;
return (-1);
}
}
if ((symp = (struct rcs_sym *)malloc(sizeof(*symp))) == NULL) {
rcs_errno = RCS_ERR_ERRNO;
cvs_log(LP_ERRNO, "failed to allocate RCS symbol");
return (-1);
}
if ((symp->rs_name = cvs_strdup(sym)) == NULL) {
rcs_errno = RCS_ERR_ERRNO;
cvs_log(LP_ERRNO, "failed to duplicate symbol");
free(symp);
return (-1);
}
if ((symp->rs_num = rcsnum_alloc()) == NULL) {
cvs_strfree(symp->rs_name);
free(symp);
return (-1);
}
rcsnum_cpy(snum, symp->rs_num, 0);
TAILQ_INSERT_HEAD(&(rfp->rf_symbols), symp, rs_list);
/* not synced anymore */
rfp->rf_flags &= ~RCS_SYNCED;
return (0);
}
/*
* rcs_sym_remove()
*
* Remove the symbol with name <sym> from the symbol list for the RCS file
* <file>. If no such symbol is found, the call fails and returns with an
* error.
* Returns 0 on success, or -1 on failure.
*/
int
rcs_sym_remove(RCSFILE *file, const char *sym)
{
struct rcs_sym *symp;
if (!rcs_sym_check(sym)) {
rcs_errno = RCS_ERR_BADSYM;
return (-1);
}
TAILQ_FOREACH(symp, &(file->rf_symbols), rs_list)
if (strcmp(symp->rs_name, sym) == 0)
break;
if (symp == NULL) {
rcs_errno = RCS_ERR_NOENT;
return (-1);
}
TAILQ_REMOVE(&(file->rf_symbols), symp, rs_list);
cvs_strfree(symp->rs_name);
rcsnum_free(symp->rs_num);
free(symp);
/* not synced anymore */
file->rf_flags &= ~RCS_SYNCED;
return (0);
}
/*
* rcs_sym_getrev()
*
* Retrieve the RCS revision number associated with the symbol <sym> for the
* RCS file <file>. The returned value is a dynamically-allocated copy and
* should be freed by the caller once they are done with it.
* Returns the RCSNUM on success, or NULL on failure.
*/
RCSNUM *
rcs_sym_getrev(RCSFILE *file, const char *sym)
{
RCSNUM *num;
struct rcs_sym *symp;
if (!rcs_sym_check(sym)) {
rcs_errno = RCS_ERR_BADSYM;
return (NULL);
}
num = NULL;
TAILQ_FOREACH(symp, &(file->rf_symbols), rs_list)
if (strcmp(symp->rs_name, sym) == 0)
break;
if (symp == NULL)
rcs_errno = RCS_ERR_NOENT;
else if (((num = rcsnum_alloc()) != NULL) &&
(rcsnum_cpy(symp->rs_num, num, 0) < 0)) {
rcsnum_free(num);
num = NULL;
}
return (num);
}
/*
* rcs_sym_check()
*
* Check the RCS symbol name <sym> for any unsupported characters.
* Returns 1 if the tag is correct, 0 if it isn't valid.
*/
int
rcs_sym_check(const char *sym)
{
int ret;
const char *cp;
ret = 1;
cp = sym;
if (!isalpha(*cp++))
return (0);
for (; *cp != '\0'; cp++)
if (!isgraph(*cp) || (strchr(rcs_sym_invch, *cp) != NULL)) {
ret = 0;
break;
}
return (ret);
}
/*
* rcs_lock_getmode()
*
* Retrieve the locking mode of the RCS file <file>.
*/
int
rcs_lock_getmode(RCSFILE *file)
{
return (file->rf_flags & RCS_SLOCK) ? RCS_LOCK_STRICT : RCS_LOCK_LOOSE;
}
/*
* rcs_lock_setmode()
*
* Set the locking mode of the RCS file <file> to <mode>, which must either
* be RCS_LOCK_LOOSE or RCS_LOCK_STRICT.
* Returns the previous mode on success, or -1 on failure.
*/
int
rcs_lock_setmode(RCSFILE *file, int mode)
{
int pmode;
pmode = rcs_lock_getmode(file);
if (mode == RCS_LOCK_STRICT)
file->rf_flags |= RCS_SLOCK;
else if (mode == RCS_LOCK_LOOSE)
file->rf_flags &= ~RCS_SLOCK;
else {
cvs_log(LP_ERRNO, "invalid lock mode %d", mode);
return (-1);
}
file->rf_flags &= ~RCS_SYNCED;
return (pmode);
}
/*
* rcs_lock_add()
*
* Add an RCS lock for the user <user> on revision <rev>.
* Returns 0 on success, or -1 on failure.
*/
int
rcs_lock_add(RCSFILE *file, const char *user, RCSNUM *rev)
{
struct rcs_lock *lkp;
/* first look for duplication */
TAILQ_FOREACH(lkp, &(file->rf_locks), rl_list) {
if (strcmp(lkp->rl_name, user) == 0) {
rcs_errno = RCS_ERR_DUPENT;
return (-1);
}
}
if ((lkp = (struct rcs_lock *)malloc(sizeof(*lkp))) == NULL) {
rcs_errno = RCS_ERR_ERRNO;
cvs_log(LP_ERRNO, "failed to allocate RCS lock");
return (-1);
}
lkp->rl_name = cvs_strdup(user);
if (lkp->rl_name == NULL) {
cvs_log(LP_ERRNO, "failed to duplicate user name");
free(lkp);
return (-1);
}
if ((lkp->rl_num = rcsnum_alloc()) == NULL) {
cvs_strfree(lkp->rl_name);
free(lkp);
return (-1);
}
rcsnum_cpy(rev, lkp->rl_num, 0);
TAILQ_INSERT_TAIL(&(file->rf_locks), lkp, rl_list);
/* not synced anymore */
file->rf_flags &= ~RCS_SYNCED;
return (0);
}
/*
* rcs_lock_remove()
*
* Remove the RCS lock on revision <rev>.
* Returns 0 on success, or -1 on failure.
*/
int
rcs_lock_remove(RCSFILE *file, const RCSNUM *rev)
{
struct rcs_lock *lkp;
TAILQ_FOREACH(lkp, &(file->rf_locks), rl_list)
if (rcsnum_cmp(lkp->rl_num, rev, 0) == 0)
break;
if (lkp == NULL) {
rcs_errno = RCS_ERR_NOENT;
return (-1);
}
TAILQ_REMOVE(&(file->rf_locks), lkp, rl_list);
rcsnum_free(lkp->rl_num);
cvs_strfree(lkp->rl_name);
free(lkp);
/* not synced anymore */
file->rf_flags &= ~RCS_SYNCED;
return (0);
}
/*
* rcs_desc_get()
*
* Retrieve the description for the RCS file <file>.
*/
const char *
rcs_desc_get(RCSFILE *file)
{
return (file->rf_desc);
}
/*
* rcs_desc_set()
*
* Set the description for the RCS file <file>.
* Returns 0 on success, or -1 on failure.
*/
int
rcs_desc_set(RCSFILE *file, const char *desc)
{
char *tmp;
if ((tmp = cvs_strdup(desc)) == NULL)
return (-1);
if (file->rf_desc != NULL)
cvs_strfree(file->rf_desc);
file->rf_desc = tmp;
file->rf_flags &= ~RCS_SYNCED;
return (0);
}
/*
* rcs_comment_lookup()
*
* Lookup the assumed comment leader based on a file's suffix.
* Returns a pointer to the string on success, or NULL on failure.
*/
const char *
rcs_comment_lookup(const char *filename)
{
int i;
const char *sp;
if ((sp = strrchr(filename, '.')) == NULL) {
rcs_errno = RCS_ERR_NOENT;
return (NULL);
}
sp++;
for (i = 0; i < (int)NB_COMTYPES; i++)
if (strcmp(rcs_comments[i].rc_suffix, sp) == 0)
return (rcs_comments[i].rc_cstr);
return (NULL);
}
/*
* rcs_comment_get()
*
* Retrieve the comment leader for the RCS file <file>.
*/
const char *
rcs_comment_get(RCSFILE *file)
{
return (file->rf_comment);
}
/*
* rcs_comment_set()
*
* Set the comment leader for the RCS file <file>.
* Returns 0 on success, or -1 on failure.
*/
int
rcs_comment_set(RCSFILE *file, const char *comment)
{
char *tmp;
if ((tmp = cvs_strdup(comment)) == NULL)
return (-1);
if (file->rf_comment != NULL)
cvs_strfree(file->rf_comment);
file->rf_comment = tmp;
file->rf_flags &= ~RCS_SYNCED;
return (0);
}
/*
* rcs_tag_resolve()
*
* Retrieve the revision number corresponding to the tag <tag> for the RCS
* file <file>.
*/
RCSNUM *
rcs_tag_resolve(RCSFILE *file, const char *tag)
{
RCSNUM *num;
if ((num = rcsnum_parse(tag)) == NULL) {
num = rcs_sym_getrev(file, tag);
}
return (num);
}
/*
* rcs_patch()
*
* Apply an RCS-format patch pointed to by <patch> to the file contents
* found in <data>.
* Returns 0 on success, or -1 on failure.
*/
BUF*
rcs_patch(const char *data, const char *patch)
{
struct rcs_foo *dlines, *plines;
struct rcs_line *lp;
size_t len;
int lineno;
BUF *res;
len = strlen(data);
res = cvs_buf_alloc(len, BUF_AUTOEXT);
if (res == NULL)
return (NULL);
dlines = rcs_splitlines(data);
if (dlines == NULL) {
cvs_buf_free(res);
return (NULL);
}
plines = rcs_splitlines(patch);
if (plines == NULL) {
cvs_buf_free(res);
rcs_freefoo(dlines);
return (NULL);
}
if (rcs_patch_lines(dlines, plines) < 0) {
cvs_buf_free(res);
rcs_freefoo(plines);
rcs_freefoo(dlines);
return (NULL);
}
lineno = 0;
TAILQ_FOREACH(lp, &dlines->rl_lines, rl_list) {
if (lineno != 0)
cvs_buf_fappend(res, "%s\n", lp->rl_line);
lineno++;
}
rcs_freefoo(dlines);
rcs_freefoo(plines);
return (res);
}
static int
rcs_patch_lines(struct rcs_foo *dlines, struct rcs_foo *plines)
{
char op, *ep;
struct rcs_line *lp, *dlp, *ndlp;
int i, lineno, nbln;
dlp = TAILQ_FIRST(&(dlines->rl_lines));
lp = TAILQ_FIRST(&(plines->rl_lines));
/* skip first bogus line */
for (lp = TAILQ_NEXT(lp, rl_list); lp != NULL;
lp = TAILQ_NEXT(lp, rl_list)) {
op = *(lp->rl_line);
lineno = (int)strtol((lp->rl_line + 1), &ep, 10);
if ((lineno > dlines->rl_nblines) || (lineno < 0) ||
(*ep != ' ')) {
cvs_log(LP_ERR,
"invalid line specification in RCS patch");
return (-1);
}
ep++;
nbln = (int)strtol(ep, &ep, 10);
if ((nbln < 0) || (*ep != '\0')) {
cvs_log(LP_ERR,
"invalid line number specification in RCS patch");
return (-1);
}
/* find the appropriate line */
for (;;) {
if (dlp == NULL)
break;
if (dlp->rl_lineno == lineno)
break;
if (dlp->rl_lineno > lineno) {
dlp = TAILQ_PREV(dlp, rcs_tqh, rl_list);
} else if (dlp->rl_lineno < lineno) {
ndlp = TAILQ_NEXT(dlp, rl_list);
if (ndlp->rl_lineno > lineno)
break;
dlp = ndlp;
}
}
if (dlp == NULL) {
cvs_log(LP_ERR,
"can't find referenced line in RCS patch");
return (-1);
}
if (op == 'd') {
for (i = 0; (i < nbln) && (dlp != NULL); i++) {
ndlp = TAILQ_NEXT(dlp, rl_list);
TAILQ_REMOVE(&(dlines->rl_lines), dlp, rl_list);
dlp = ndlp;
}
} else if (op == 'a') {
for (i = 0; i < nbln; i++) {
ndlp = lp;
lp = TAILQ_NEXT(lp, rl_list);
if (lp == NULL) {
cvs_log(LP_ERR, "truncated RCS patch");
return (-1);
}
TAILQ_REMOVE(&(plines->rl_lines), lp, rl_list);
TAILQ_INSERT_AFTER(&(dlines->rl_lines), dlp,
lp, rl_list);
dlp = lp;
/* we don't want lookup to block on those */
lp->rl_lineno = lineno;
lp = ndlp;
}
} else {
cvs_log(LP_ERR, "unknown RCS patch operation `%c'", op);
return (-1);
}
/* last line of the patch, done */
if (lp->rl_lineno == plines->rl_nblines)
break;
}
/* once we're done patching, rebuild the line numbers */
lineno = 0;
TAILQ_FOREACH(lp, &(dlines->rl_lines), rl_list)
lp->rl_lineno = lineno++;
dlines->rl_nblines = lineno - 1;
return (0);
}
/*
* rcs_getrev()
*
* Get the whole contents of revision <rev> from the RCSFILE <rfp>. The
* returned buffer is dynamically allocated and should be released using
* cvs_buf_free() once the caller is done using it.
*/
BUF*
rcs_getrev(RCSFILE *rfp, RCSNUM *frev)
{
int expmode, res;
size_t len;
void *bp;
RCSNUM *crev, *rev;
BUF *rbuf, *dbuf = NULL;
struct rcs_delta *rdp = NULL;
struct rcs_foo *lines;
struct rcs_line *lp;
char out[1024]; /* XXX */
if (rfp->rf_head == NULL)
return (NULL);
if (frev == RCS_HEAD_REV)
rev = rfp->rf_head;
else
rev = frev;
res = rcsnum_cmp(rfp->rf_head, rev, 0);
if (res == 1) {
rcs_errno = RCS_ERR_NOENT;
return (NULL);
}
rdp = rcs_findrev(rfp, rfp->rf_head);
if (rdp == NULL) {
cvs_log(LP_ERR, "failed to get RCS HEAD revision");
return (NULL);
}
len = rdp->rd_tlen;
if ((rbuf = cvs_buf_alloc(len, BUF_AUTOEXT)) == NULL)
return (NULL);
cvs_buf_append(rbuf, rdp->rd_text, len);
if (res != 0) {
/* Apply patches backwards to get the right version.
* This will need some rework to support sub branches.
*/
do {
crev = rdp->rd_next;
rdp = rcs_findrev(rfp, crev);
if (rdp == NULL) {
cvs_buf_free(rbuf);
return (NULL);
}
if (cvs_buf_putc(rbuf, '\0') < 0) {
cvs_buf_free(rbuf);
return (NULL);
}
bp = cvs_buf_release(rbuf);
rbuf = rcs_patch((char *)bp, (char *)rdp->rd_text);
free(bp);
if (rbuf == NULL)
break;
} while (rcsnum_cmp(crev, rev, 0) != 0);
}
/*
* Do keyword expansion if required.
*/
if (rfp->rf_expand != NULL)
expmode = rcs_kwexp_get(rfp);
else
expmode = RCS_KWEXP_DEFAULT;
if ((rbuf != NULL) && !(expmode & RCS_KWEXP_NONE)) {
if ((dbuf = cvs_buf_alloc(len, BUF_AUTOEXT)) == NULL)
return (rbuf);
if ((rdp = rcs_findrev(rfp, rev)) == NULL)
return (rbuf);
if (cvs_buf_putc(rbuf, '\0') < 0) {
cvs_buf_free(dbuf);
return (rbuf);
}
bp = cvs_buf_release(rbuf);
if ((lines = rcs_splitlines((char *)bp)) != NULL) {
res = 0;
TAILQ_FOREACH(lp, &lines->rl_lines, rl_list) {
if (res++ == 0)
continue;
rcs_expand_keywords(rfp->rf_path, rdp,
lp->rl_line, out, sizeof(out), expmode);
cvs_buf_fappend(dbuf, "%s\n", out);
}
rcs_freefoo(lines);
}
free(bp);
}
return (dbuf);
}
/*
* rcs_rev_add()
*
* Add a revision to the RCS file <rf>. The new revision's number can be
* specified in <rev> (which can also be RCS_HEAD_REV, in which case the
* new revision will have a number equal to the previous head revision plus
* one). The <msg> argument specifies the log message for that revision, and
* <date> specifies the revision's date (a value of -1 is
* equivalent to using the current time).
* If <username> is NULL, set the author for this revision to the current user.
* Otherwise, set it to <username>.
* Returns 0 on success, or -1 on failure.
*/
int
rcs_rev_add(RCSFILE *rf, RCSNUM *rev, const char *msg, time_t date,
const char *username)
{
time_t now;
struct passwd *pw;
struct rcs_delta *ordp, *rdp;
RCSNUM *old;
if ((old = rcsnum_alloc()) == NULL)
return (-1);
if (rev == RCS_HEAD_REV) {
rcsnum_cpy(rf->rf_head, old, 0);
rev = rcsnum_inc(rf->rf_head);
} else {
if ((rdp = rcs_findrev(rf, rev)) != NULL) {
rcs_errno = RCS_ERR_DUPENT;
rcsnum_free(old);
return (-1);
}
ordp = NULL;
rcsnum_cpy(rev, old, 0);
while (ordp == NULL) {
old = rcsnum_dec(old);
ordp = rcs_findrev(rf, old);
}
}
if ((pw = getpwuid(getuid())) == NULL) {
rcs_errno = RCS_ERR_ERRNO;
rcsnum_free(old);
return (-1);
}
if ((rdp = (struct rcs_delta *)malloc(sizeof(*rdp))) == NULL) {
rcs_errno = RCS_ERR_ERRNO;
rcsnum_free(old);
return (-1);
}
memset(rdp, 0, sizeof(*rdp));
TAILQ_INIT(&(rdp->rd_branches));
TAILQ_INIT(&(rdp->rd_snodes));
if ((rdp->rd_num = rcsnum_alloc()) == NULL) {
rcs_freedelta(rdp);
rcsnum_free(old);
return (-1);
}
rcsnum_cpy(rev, rdp->rd_num, 0);
if ((rdp->rd_next = rcsnum_alloc()) == NULL) {
rcs_freedelta(rdp);
rcsnum_free(old);
return (-1);
}
rcsnum_cpy(old, rdp->rd_next, 0);
rcsnum_free(old);
if (username == NULL)
username = pw->pw_name;
if ((rdp->rd_author = cvs_strdup(username)) == NULL) {
rcs_freedelta(rdp);
rcsnum_free(old);
return (-1);
}
if ((rdp->rd_state = cvs_strdup(RCS_STATE_EXP)) == NULL) {
rcs_freedelta(rdp);
rcsnum_free(old);
return (-1);
}
if ((rdp->rd_log = cvs_strdup(msg)) == NULL) {
rcs_errno = RCS_ERR_ERRNO;
rcs_freedelta(rdp);
rcsnum_free(old);
return (-1);
}
if (date != (time_t)(-1))
now = date;
else
time(&now);
gmtime_r(&now, &(rdp->rd_date));
TAILQ_INSERT_HEAD(&(rf->rf_delta), rdp, rd_list);
rf->rf_ndelta++;
/* not synced anymore */
rf->rf_flags &= ~RCS_SYNCED;
return (0);
}
/*
* rcs_rev_remove()
*
* Remove the revision whose number is <rev> from the RCS file <rf>.
*/
int
rcs_rev_remove(RCSFILE *rf, RCSNUM *rev)
{
int ret;
struct rcs_delta *rdp;
ret = 0;
if (rev == RCS_HEAD_REV)
rev = rf->rf_head;
/* do we actually have that revision? */
if ((rdp = rcs_findrev(rf, rev)) == NULL) {
rcs_errno = RCS_ERR_NOENT;
ret = -1;
} else {
/* XXX assumes it's not a sub node */
TAILQ_REMOVE(&(rf->rf_delta), rdp, rd_list);
rf->rf_ndelta--;
rf->rf_flags &= ~RCS_SYNCED;
}
return (ret);
}
/*
* rcs_findrev()
*
* Find a specific revision's delta entry in the tree of the RCS file <rfp>.
* The revision number is given in <rev>.
* Returns a pointer to the delta on success, or NULL on failure.
*/
static struct rcs_delta*
rcs_findrev(RCSFILE *rfp, const RCSNUM *rev)
{
u_int cmplen;
struct rcs_delta *rdp;
struct rcs_dlist *hp;
int found;
cmplen = 2;
hp = &(rfp->rf_delta);
do {
found = 0;
TAILQ_FOREACH(rdp, hp, rd_list) {
if (rcsnum_cmp(rdp->rd_num, rev, cmplen) == 0) {
if (cmplen == rev->rn_len)
return (rdp);
hp = &(rdp->rd_snodes);
cmplen += 2;
found = 1;
break;
}
}
} while (found && cmplen < rev->rn_len);
return (NULL);
}
/*
* rcs_kwexp_set()
*
* Set the keyword expansion mode to use on the RCS file <file> to <mode>.
* Returns 0 on success, or -1 on failure.
*/
int
rcs_kwexp_set(RCSFILE *file, int mode)
{
int i;
char *tmp, buf[8] = "";
if (RCS_KWEXP_INVAL(mode))
return (-1);
i = 0;
if (mode == RCS_KWEXP_NONE)
buf[0] = 'b';
else if (mode == RCS_KWEXP_OLD)
buf[0] = 'o';
else {
if (mode & RCS_KWEXP_NAME)
buf[i++] = 'k';
if (mode & RCS_KWEXP_VAL)
buf[i++] = 'v';
if (mode & RCS_KWEXP_LKR)
buf[i++] = 'l';
}
if ((tmp = cvs_strdup(buf)) == NULL) {
cvs_log(LP_ERRNO, "%s: failed to copy expansion mode",
file->rf_path);
return (-1);
}
if (file->rf_expand != NULL)
cvs_strfree(file->rf_expand);
file->rf_expand = tmp;
/* not synced anymore */
file->rf_flags &= ~RCS_SYNCED;
return (0);
}
/*
* rcs_kwexp_get()
*
* Retrieve the keyword expansion mode to be used for the RCS file <file>.
*/
int
rcs_kwexp_get(RCSFILE *file)
{
return rcs_kflag_get(file->rf_expand);
}
/*
* rcs_kflag_get()
*
* Get the keyword expansion mode from a set of character flags given in
* <flags> and return the appropriate flag mask. In case of an error, the
* returned mask will have the RCS_KWEXP_ERR bit set to 1.
*/
int
rcs_kflag_get(const char *flags)
{
int fl;
size_t len;
const char *fp;
fl = 0;
len = strlen(flags);
for (fp = flags; *fp != '\0'; fp++) {
if (*fp == 'k')
fl |= RCS_KWEXP_NAME;
else if (*fp == 'v')
fl |= RCS_KWEXP_VAL;
else if (*fp == 'l')
fl |= RCS_KWEXP_LKR;
else if (*fp == 'o') {
if (len != 1)
fl |= RCS_KWEXP_ERR;
fl |= RCS_KWEXP_OLD;
} else if (*fp == 'b') {
if (len != 1)
fl |= RCS_KWEXP_ERR;
} else /* unknown letter */
fl |= RCS_KWEXP_ERR;
}
return (fl);
}
/*
* rcs_errstr()
*
* Get the error string matching the RCS error code <code>.
*/
const char *
rcs_errstr(int code)
{
const char *esp;
if ((code < 0) || ((code >= (int)RCS_NERR) && (code != RCS_ERR_ERRNO)))
esp = NULL;
else if (code == RCS_ERR_ERRNO)
esp = strerror(errno);
else
esp = rcs_errstrs[code];
return (esp);
}
void
rcs_kflag_usage(void)
{
fprintf(stderr, "Valid expansion modes include:\n"
"\t-kkv\tGenerate keywords using the default form.\n"
"\t-kkvl\tLike -kkv, except locker's name inserted.\n"
"\t-kk\tGenerate only keyword names in keyword strings.\n"
"\t-kv\tGenerate only keyword values in keyword strings.\n"
"\t-ko\tGenerate old keyword string "
"(no changes from checked in file).\n"
"\t-kb\tGenerate binary file unmodified (merges not allowed).\n");
}
/*
* rcs_parse()
*
* Parse the contents of file <path>, which are in the RCS format.
* Returns 0 on success, or -1 on failure.
*/
static int
rcs_parse(RCSFILE *rfp)
{
int ret;
struct rcs_pdata *pdp;
if (rfp->rf_flags & RCS_PARSED)
return (0);
if ((pdp = (struct rcs_pdata *)malloc(sizeof(*pdp))) == NULL) {
rcs_errno = RCS_ERR_ERRNO;
cvs_log(LP_ERRNO, "failed to allocate RCS parser data");
return (-1);
}
memset(pdp, 0, sizeof(*pdp));
pdp->rp_lines = 0;
pdp->rp_pttype = RCS_TOK_ERR;
pdp->rp_file = fopen(rfp->rf_path, "r");
if (pdp->rp_file == NULL) {
rcs_errno = RCS_ERR_ERRNO;
cvs_log(LP_ERRNO, "failed to open RCS file `%s'", rfp->rf_path);
rcs_freepdata(pdp);
return (-1);
}
pdp->rp_buf = (char *)malloc((size_t)RCS_BUFSIZE);
if (pdp->rp_buf == NULL) {
rcs_errno = RCS_ERR_ERRNO;
cvs_log(LP_ERRNO, "failed to allocate RCS parser buffer");
rcs_freepdata(pdp);
return (-1);
}
pdp->rp_blen = RCS_BUFSIZE;
pdp->rp_bufend = pdp->rp_buf + pdp->rp_blen - 1;
/* ditch the strict lock */
rfp->rf_flags &= ~RCS_SLOCK;
rfp->rf_pdata = pdp;
if ((ret = rcs_parse_admin(rfp)) < 0) {
rcs_freepdata(pdp);
return (-1);
} else if (ret == RCS_TOK_NUM) {
for (;;) {
ret = rcs_parse_delta(rfp);
if (ret == 0)
break;
else if (ret == -1) {
rcs_freepdata(pdp);
return (-1);
}
}
}
ret = rcs_gettok(rfp);
if (ret != RCS_TOK_DESC) {
rcs_errno = RCS_ERR_PARSE;
cvs_log(LP_ERR, "token `%s' found where RCS desc expected",
RCS_TOKSTR(rfp));
rcs_freepdata(pdp);
return (-1);
}
ret = rcs_gettok(rfp);
if (ret != RCS_TOK_STRING) {
rcs_errno = RCS_ERR_PARSE;
cvs_log(LP_ERR, "token `%s' found where RCS desc expected",
RCS_TOKSTR(rfp));
rcs_freepdata(pdp);
return (-1);
}
rfp->rf_desc = cvs_strdup(RCS_TOKSTR(rfp));
if (rfp->rf_desc == NULL) {
cvs_log(LP_ERRNO, "failed to duplicate rcs token");
rcs_freepdata(pdp);
return (-1);
}
for (;;) {
ret = rcs_parse_deltatext(rfp);
if (ret == 0)
break;
else if (ret == -1) {
rcs_freepdata(pdp);
return (-1);
}
}
rcs_freepdata(pdp);
rfp->rf_pdata = NULL;
rfp->rf_flags |= RCS_PARSED | RCS_SYNCED;
return (0);
}
/*
* rcs_parse_admin()
*
* Parse the administrative portion of an RCS file.
* Returns the type of the first token found after the admin section on
* success, or -1 on failure.
*/
static int
rcs_parse_admin(RCSFILE *rfp)
{
u_int i;
int tok, ntok, hmask;
struct rcs_key *rk;
/* hmask is a mask of the headers already encountered */
hmask = 0;
for (;;) {
tok = rcs_gettok(rfp);
if (tok == RCS_TOK_ERR) {
rcs_errno = RCS_ERR_PARSE;
cvs_log(LP_ERR, "parse error in RCS admin section");
return (-1);
} else if ((tok == RCS_TOK_NUM) || (tok == RCS_TOK_DESC)) {
/*
* Assume this is the start of the first delta or
* that we are dealing with an empty RCS file and
* we just found the description.
*/
rcs_pushtok(rfp, RCS_TOKSTR(rfp), tok);
return (tok);
}
rk = NULL;
for (i = 0; i < RCS_NKEYS; i++)
if (rcs_keys[i].rk_id == tok)
rk = &(rcs_keys[i]);
if (hmask & (1 << tok)) {
rcs_errno = RCS_ERR_PARSE;
cvs_log(LP_ERR, "duplicate RCS key");
return (-1);
}
hmask |= (1 << tok);
switch (tok) {
case RCS_TOK_HEAD:
case RCS_TOK_BRANCH:
case RCS_TOK_COMMENT:
case RCS_TOK_EXPAND:
ntok = rcs_gettok(rfp);
if (ntok == RCS_TOK_SCOLON)
break;
if (ntok != rk->rk_val) {
rcs_errno = RCS_ERR_PARSE;
cvs_log(LP_ERR,
"invalid value type for RCS key `%s'",
rk->rk_str);
}
if (tok == RCS_TOK_HEAD) {
if (rfp->rf_head == NULL) {
rfp->rf_head = rcsnum_alloc();
if (rfp->rf_head == NULL)
return (-1);
}
rcsnum_aton(RCS_TOKSTR(rfp), NULL,
rfp->rf_head);
} else if (tok == RCS_TOK_BRANCH) {
if (rfp->rf_branch == NULL) {
rfp->rf_branch = rcsnum_alloc();
if (rfp->rf_branch == NULL)
return (-1);
}
if (rcsnum_aton(RCS_TOKSTR(rfp), NULL,
rfp->rf_branch) < 0)
return (-1);
} else if (tok == RCS_TOK_COMMENT) {
rfp->rf_comment = cvs_strdup(RCS_TOKSTR(rfp));
if (rfp->rf_comment == NULL) {
cvs_log(LP_ERRNO,
"failed to duplicate rcs token");
return (-1);
}
} else if (tok == RCS_TOK_EXPAND) {
rfp->rf_expand = cvs_strdup(RCS_TOKSTR(rfp));
if (rfp->rf_expand == NULL) {
cvs_log(LP_ERRNO,
"failed to duplicate rcs token");
return (-1);
}
}
/* now get the expected semi-colon */
ntok = rcs_gettok(rfp);
if (ntok != RCS_TOK_SCOLON) {
rcs_errno = RCS_ERR_PARSE;
cvs_log(LP_ERR,
"missing semi-colon after RCS `%s' key",
rk->rk_str);
return (-1);
}
break;
case RCS_TOK_ACCESS:
if (rcs_parse_access(rfp) < 0)
return (-1);
break;
case RCS_TOK_SYMBOLS:
if (rcs_parse_symbols(rfp) < 0)
return (-1);
break;
case RCS_TOK_LOCKS:
if (rcs_parse_locks(rfp) < 0)
return (-1);
break;
default:
rcs_errno = RCS_ERR_PARSE;
cvs_log(LP_ERR,
"unexpected token `%s' in RCS admin section",
RCS_TOKSTR(rfp));
return (-1);
}
}
return (0);
}
/*
* rcs_parse_delta()
*
* Parse an RCS delta section and allocate the structure to store that delta's
* information in the <rfp> delta list.
* Returns 1 if the section was parsed OK, 0 if it is the last delta, and
* -1 on error.
*/
static int
rcs_parse_delta(RCSFILE *rfp)
{
int ret, tok, ntok, hmask;
u_int i;
char *tokstr;
RCSNUM *datenum;
struct rcs_delta *rdp;
struct rcs_key *rk;
rdp = (struct rcs_delta *)malloc(sizeof(*rdp));
if (rdp == NULL) {
rcs_errno = RCS_ERR_ERRNO;
cvs_log(LP_ERRNO, "failed to allocate RCS delta structure");
return (-1);
}
memset(rdp, 0, sizeof(*rdp));
rdp->rd_num = rcsnum_alloc();
if (rdp->rd_num == NULL) {
rcs_freedelta(rdp);
return (-1);
}
rdp->rd_next = rcsnum_alloc();
if (rdp->rd_next == NULL) {
rcs_freedelta(rdp);
return (-1);
}
TAILQ_INIT(&(rdp->rd_branches));
TAILQ_INIT(&(rdp->rd_snodes));
tok = rcs_gettok(rfp);
if (tok != RCS_TOK_NUM) {
rcs_errno = RCS_ERR_PARSE;
cvs_log(LP_ERR, "unexpected token `%s' at start of delta",
RCS_TOKSTR(rfp));
rcs_freedelta(rdp);
return (-1);
}
rcsnum_aton(RCS_TOKSTR(rfp), NULL, rdp->rd_num);
hmask = 0;
ret = 0;
tokstr = NULL;
for (;;) {
tok = rcs_gettok(rfp);
if (tok == RCS_TOK_ERR) {
rcs_errno = RCS_ERR_PARSE;
cvs_log(LP_ERR, "parse error in RCS delta section");
rcs_freedelta(rdp);
return (-1);
} else if (tok == RCS_TOK_NUM || tok == RCS_TOK_DESC) {
rcs_pushtok(rfp, RCS_TOKSTR(rfp), tok);
ret = (tok == RCS_TOK_NUM ? 1 : 0);
break;
}
rk = NULL;
for (i = 0; i < RCS_NKEYS; i++)
if (rcs_keys[i].rk_id == tok)
rk = &(rcs_keys[i]);
if (hmask & (1 << tok)) {
rcs_errno = RCS_ERR_PARSE;
cvs_log(LP_ERR, "duplicate RCS key");
rcs_freedelta(rdp);
return (-1);
}
hmask |= (1 << tok);
switch (tok) {
case RCS_TOK_DATE:
case RCS_TOK_AUTHOR:
case RCS_TOK_STATE:
case RCS_TOK_NEXT:
ntok = rcs_gettok(rfp);
if (ntok == RCS_TOK_SCOLON) {
if (rk->rk_flags & RCS_VOPT)
break;
else {
rcs_errno = RCS_ERR_PARSE;
cvs_log(LP_ERR, "missing mandatory "
"value to RCS key `%s'",
rk->rk_str);
rcs_freedelta(rdp);
return (-1);
}
}
if (ntok != rk->rk_val) {
rcs_errno = RCS_ERR_PARSE;
cvs_log(LP_ERR,
"invalid value type for RCS key `%s'",
rk->rk_str);
rcs_freedelta(rdp);
return (-1);
}
if (tokstr != NULL)
cvs_strfree(tokstr);
tokstr = cvs_strdup(RCS_TOKSTR(rfp));
if (tokstr == NULL) {
cvs_log(LP_ERRNO,
"failed to duplicate rcs token");
rcs_freedelta(rdp);
return (-1);
}
/* now get the expected semi-colon */
ntok = rcs_gettok(rfp);
if (ntok != RCS_TOK_SCOLON) {
rcs_errno = RCS_ERR_PARSE;
cvs_log(LP_ERR,
"missing semi-colon after RCS `%s' key",
rk->rk_str);
cvs_strfree(tokstr);
rcs_freedelta(rdp);
return (-1);
}
if (tok == RCS_TOK_DATE) {
if ((datenum = rcsnum_parse(tokstr)) == NULL) {
cvs_strfree(tokstr);
rcs_freedelta(rdp);
return (-1);
}
if (datenum->rn_len != 6) {
rcs_errno = RCS_ERR_PARSE;
cvs_log(LP_ERR,
"RCS date specification has %s "
"fields",
(datenum->rn_len > 6) ? "too many" :
"missing");
cvs_strfree(tokstr);
rcs_freedelta(rdp);
rcsnum_free(datenum);
return (-1);
}
rdp->rd_date.tm_year = datenum->rn_id[0];
if (rdp->rd_date.tm_year >= 1900)
rdp->rd_date.tm_year -= 1900;
rdp->rd_date.tm_mon = datenum->rn_id[1] - 1;
rdp->rd_date.tm_mday = datenum->rn_id[2];
rdp->rd_date.tm_hour = datenum->rn_id[3];
rdp->rd_date.tm_min = datenum->rn_id[4];
rdp->rd_date.tm_sec = datenum->rn_id[5];
rcsnum_free(datenum);
} else if (tok == RCS_TOK_AUTHOR) {
rdp->rd_author = tokstr;
tokstr = NULL;
} else if (tok == RCS_TOK_STATE) {
rdp->rd_state = tokstr;
tokstr = NULL;
} else if (tok == RCS_TOK_NEXT) {
rcsnum_aton(tokstr, NULL, rdp->rd_next);
}
break;
case RCS_TOK_BRANCHES:
if (rcs_parse_branches(rfp, rdp) < 0) {
rcs_freedelta(rdp);
return (-1);
}
break;
default:
rcs_errno = RCS_ERR_PARSE;
cvs_log(LP_ERR,
"unexpected token `%s' in RCS delta",
RCS_TOKSTR(rfp));
rcs_freedelta(rdp);
return (-1);
}
}
if (tokstr != NULL)
cvs_strfree(tokstr);
TAILQ_INSERT_TAIL(&(rfp->rf_delta), rdp, rd_list);
rfp->rf_ndelta++;
return (ret);
}
/*
* rcs_parse_deltatext()
*
* Parse an RCS delta text section and fill in the log and text field of the
* appropriate delta section.
* Returns 1 if the section was parsed OK, 0 if it is the last delta, and
* -1 on error.
*/
static int
rcs_parse_deltatext(RCSFILE *rfp)
{
int tok;
RCSNUM *tnum;
struct rcs_delta *rdp;
tok = rcs_gettok(rfp);
if (tok == RCS_TOK_EOF)
return (0);
if (tok != RCS_TOK_NUM) {
rcs_errno = RCS_ERR_PARSE;
cvs_log(LP_ERR,
"unexpected token `%s' at start of RCS delta text",
RCS_TOKSTR(rfp));
return (-1);
}
tnum = rcsnum_alloc();
if (tnum == NULL)
return (-1);
rcsnum_aton(RCS_TOKSTR(rfp), NULL, tnum);
TAILQ_FOREACH(rdp, &(rfp->rf_delta), rd_list) {
if (rcsnum_cmp(tnum, rdp->rd_num, 0) == 0)
break;
}
rcsnum_free(tnum);
if (rdp == NULL) {
cvs_log(LP_ERR, "RCS delta text `%s' has no matching delta",
RCS_TOKSTR(rfp));
return (-1);
}
tok = rcs_gettok(rfp);
if (tok != RCS_TOK_LOG) {
rcs_errno = RCS_ERR_PARSE;
cvs_log(LP_ERR, "unexpected token `%s' where RCS log expected",
RCS_TOKSTR(rfp));
return (-1);
}
tok = rcs_gettok(rfp);
if (tok != RCS_TOK_STRING) {
rcs_errno = RCS_ERR_PARSE;
cvs_log(LP_ERR, "unexpected token `%s' where RCS log expected",
RCS_TOKSTR(rfp));
return (-1);
}
rdp->rd_log = cvs_strdup(RCS_TOKSTR(rfp));
if (rdp->rd_log == NULL) {
cvs_log(LP_ERRNO, "failed to copy RCS deltatext log");
return (-1);
}
tok = rcs_gettok(rfp);
if (tok != RCS_TOK_TEXT) {
rcs_errno = RCS_ERR_PARSE;
cvs_log(LP_ERR, "unexpected token `%s' where RCS text expected",
RCS_TOKSTR(rfp));
return (-1);
}
tok = rcs_gettok(rfp);
if (tok != RCS_TOK_STRING) {
rcs_errno = RCS_ERR_PARSE;
cvs_log(LP_ERR, "unexpected token `%s' where RCS text expected",
RCS_TOKSTR(rfp));
return (-1);
}
rdp->rd_text = (u_char *)malloc(RCS_TOKLEN(rfp) + 1);
if (rdp->rd_text == NULL) {
cvs_log(LP_ERRNO, "failed to copy RCS delta text");
return (-1);
}
strlcpy(rdp->rd_text, RCS_TOKSTR(rfp), (RCS_TOKLEN(rfp) + 1));
rdp->rd_tlen = RCS_TOKLEN(rfp);
return (1);
}
/*
* rcs_parse_access()
*
* Parse the access list given as value to the `access' keyword.
* Returns 0 on success, or -1 on failure.
*/
static int
rcs_parse_access(RCSFILE *rfp)
{
int type;
while ((type = rcs_gettok(rfp)) != RCS_TOK_SCOLON) {
if (type != RCS_TOK_ID) {
rcs_errno = RCS_ERR_PARSE;
cvs_log(LP_ERR, "unexpected token `%s' in access list",
RCS_TOKSTR(rfp));
return (-1);
}
if (rcs_access_add(rfp, RCS_TOKSTR(rfp)) < 0)
return (-1);
}
return (0);
}
/*
* rcs_parse_symbols()
*
* Parse the symbol list given as value to the `symbols' keyword.
* Returns 0 on success, or -1 on failure.
*/
static int
rcs_parse_symbols(RCSFILE *rfp)
{
int type;
struct rcs_sym *symp;
for (;;) {
type = rcs_gettok(rfp);
if (type == RCS_TOK_SCOLON)
break;
if (type != RCS_TOK_ID) {
rcs_errno = RCS_ERR_PARSE;
cvs_log(LP_ERR, "unexpected token `%s' in symbol list",
RCS_TOKSTR(rfp));
return (-1);
}
symp = (struct rcs_sym *)malloc(sizeof(*symp));
if (symp == NULL) {
rcs_errno = RCS_ERR_ERRNO;
cvs_log(LP_ERRNO, "failed to allocate RCS symbol");
return (-1);
}
symp->rs_name = cvs_strdup(RCS_TOKSTR(rfp));
if (symp->rs_name == NULL) {
cvs_log(LP_ERRNO, "failed to duplicate rcs token");
free(symp);
return (-1);
}
symp->rs_num = rcsnum_alloc();
if (symp->rs_num == NULL) {
cvs_log(LP_ERRNO, "failed to allocate rcsnum info");
cvs_strfree(symp->rs_name);
free(symp);
return (-1);
}
type = rcs_gettok(rfp);
if (type != RCS_TOK_COLON) {
rcs_errno = RCS_ERR_PARSE;
cvs_log(LP_ERR, "unexpected token `%s' in symbol list",
RCS_TOKSTR(rfp));
rcsnum_free(symp->rs_num);
cvs_strfree(symp->rs_name);
free(symp);
return (-1);
}
type = rcs_gettok(rfp);
if (type != RCS_TOK_NUM) {
rcs_errno = RCS_ERR_PARSE;
cvs_log(LP_ERR, "unexpected token `%s' in symbol list",
RCS_TOKSTR(rfp));
rcsnum_free(symp->rs_num);
cvs_strfree(symp->rs_name);
free(symp);
return (-1);
}
if (rcsnum_aton(RCS_TOKSTR(rfp), NULL, symp->rs_num) < 0) {
cvs_log(LP_ERR, "failed to parse RCS NUM `%s'",
RCS_TOKSTR(rfp));
rcsnum_free(symp->rs_num);
cvs_strfree(symp->rs_name);
free(symp);
return (-1);
}
TAILQ_INSERT_TAIL(&(rfp->rf_symbols), symp, rs_list);
}
return (0);
}
/*
* rcs_parse_locks()
*
* Parse the lock list given as value to the `locks' keyword.
* Returns 0 on success, or -1 on failure.
*/
static int
rcs_parse_locks(RCSFILE *rfp)
{
int type;
struct rcs_lock *lkp;
for (;;) {
type = rcs_gettok(rfp);
if (type == RCS_TOK_SCOLON)
break;
if (type != RCS_TOK_ID) {
rcs_errno = RCS_ERR_PARSE;
cvs_log(LP_ERR, "unexpected token `%s' in lock list",
RCS_TOKSTR(rfp));
return (-1);
}
lkp = (struct rcs_lock *)malloc(sizeof(*lkp));
if (lkp == NULL) {
cvs_log(LP_ERRNO, "failed to allocate RCS lock");
return (-1);
}
if ((lkp->rl_name = cvs_strdup(RCS_TOKSTR(rfp))) == NULL) {
cvs_log(LP_ERR, "failed to save locking user");
free(lkp);
return (-1);
}
lkp->rl_num = rcsnum_alloc();
if (lkp->rl_num == NULL) {
cvs_strfree(lkp->rl_name);
free(lkp);
return (-1);
}
type = rcs_gettok(rfp);
if (type != RCS_TOK_COLON) {
rcs_errno = RCS_ERR_PARSE;
cvs_log(LP_ERR, "unexpected token `%s' in symbol list",
RCS_TOKSTR(rfp));
rcsnum_free(lkp->rl_num);
cvs_strfree(lkp->rl_name);
free(lkp);
return (-1);
}
type = rcs_gettok(rfp);
if (type != RCS_TOK_NUM) {
rcs_errno = RCS_ERR_PARSE;
cvs_log(LP_ERR, "unexpected token `%s' in symbol list",
RCS_TOKSTR(rfp));
rcsnum_free(lkp->rl_num);
cvs_strfree(lkp->rl_name);
free(lkp);
return (-1);
}
if (rcsnum_aton(RCS_TOKSTR(rfp), NULL, lkp->rl_num) < 0) {
cvs_log(LP_ERR, "failed to parse RCS NUM `%s'",
RCS_TOKSTR(rfp));
rcsnum_free(lkp->rl_num);
cvs_strfree(lkp->rl_name);
free(lkp);
return (-1);
}
TAILQ_INSERT_HEAD(&(rfp->rf_locks), lkp, rl_list);
}
/* check if we have a `strict' */
type = rcs_gettok(rfp);
if (type != RCS_TOK_STRICT) {
rcs_pushtok(rfp, RCS_TOKSTR(rfp), type);
} else {
rfp->rf_flags |= RCS_SLOCK;
type = rcs_gettok(rfp);
if (type != RCS_TOK_SCOLON) {
rcs_errno = RCS_ERR_PARSE;
cvs_log(LP_ERR,
"missing semi-colon after `strict' keyword");
return (-1);
}
}
return (0);
}
/*
* rcs_parse_branches()
*
* Parse the list of branches following a `branches' keyword in a delta.
* Returns 0 on success, or -1 on failure.
*/
static int
rcs_parse_branches(RCSFILE *rfp, struct rcs_delta *rdp)
{
int type;
struct rcs_branch *brp;
for (;;) {
type = rcs_gettok(rfp);
if (type == RCS_TOK_SCOLON)
break;
if (type != RCS_TOK_NUM) {
rcs_errno = RCS_ERR_PARSE;
cvs_log(LP_ERR,
"unexpected token `%s' in list of branches",
RCS_TOKSTR(rfp));
return (-1);
}
brp = (struct rcs_branch *)malloc(sizeof(*brp));
if (brp == NULL) {
rcs_errno = RCS_ERR_ERRNO;
cvs_log(LP_ERRNO, "failed to allocate RCS branch");
return (-1);
}
brp->rb_num = rcsnum_parse(RCS_TOKSTR(rfp));
if (brp->rb_num == NULL) {
free(brp);
return (-1);
}
TAILQ_INSERT_TAIL(&(rdp->rd_branches), brp, rb_list);
}
return (0);
}
/*
* rcs_freedelta()
*
* Free the contents of a delta structure.
*/
static void
rcs_freedelta(struct rcs_delta *rdp)
{
struct rcs_branch *rb;
struct rcs_delta *crdp;
if (rdp->rd_num != NULL)
rcsnum_free(rdp->rd_num);
if (rdp->rd_next != NULL)
rcsnum_free(rdp->rd_next);
if (rdp->rd_author != NULL)
cvs_strfree(rdp->rd_author);
if (rdp->rd_state != NULL)
cvs_strfree(rdp->rd_state);
if (rdp->rd_log != NULL)
cvs_strfree(rdp->rd_log);
if (rdp->rd_text != NULL)
free(rdp->rd_text);
while ((rb = TAILQ_FIRST(&(rdp->rd_branches))) != NULL) {
TAILQ_REMOVE(&(rdp->rd_branches), rb, rb_list);
rcsnum_free(rb->rb_num);
free(rb);
}
while ((crdp = TAILQ_FIRST(&(rdp->rd_snodes))) != NULL) {
TAILQ_REMOVE(&(rdp->rd_snodes), crdp, rd_list);
rcs_freedelta(crdp);
}
free(rdp);
}
/*
* rcs_freepdata()
*
* Free the contents of the parser data structure.
*/
static void
rcs_freepdata(struct rcs_pdata *pd)
{
if (pd->rp_file != NULL)
(void)fclose(pd->rp_file);
if (pd->rp_buf != NULL)
free(pd->rp_buf);
free(pd);
}
/*
* rcs_gettok()
*
* Get the next RCS token from the string <str>.
*/
static int
rcs_gettok(RCSFILE *rfp)
{
u_int i;
int ch, last, type;
size_t len;
char *bp;
struct rcs_pdata *pdp = (struct rcs_pdata *)rfp->rf_pdata;
type = RCS_TOK_ERR;
bp = pdp->rp_buf;
pdp->rp_tlen = 0;
*bp = '\0';
if (pdp->rp_pttype != RCS_TOK_ERR) {
type = pdp->rp_pttype;
strlcpy(pdp->rp_buf, pdp->rp_ptok, pdp->rp_blen);
pdp->rp_pttype = RCS_TOK_ERR;
return (type);
}
/* skip leading whitespace */
/* XXX we must skip backspace too for compatibility, should we? */
do {
ch = getc(pdp->rp_file);
if (ch == '\n')
pdp->rp_lines++;
} while (isspace(ch));
if (ch == EOF) {
type = RCS_TOK_EOF;
} else if (ch == ';') {
type = RCS_TOK_SCOLON;
} else if (ch == ':') {
type = RCS_TOK_COLON;
} else if (isalpha(ch)) {
type = RCS_TOK_ID;
*(bp++) = ch;
for (;;) {
ch = getc(pdp->rp_file);
if (!isalnum(ch) && ch != '_' && ch != '-') {
ungetc(ch, pdp->rp_file);
break;
}
*(bp++) = ch;
pdp->rp_tlen++;
if (bp == pdp->rp_bufend - 1) {
len = bp - pdp->rp_buf;
if (rcs_growbuf(rfp) < 0) {
type = RCS_TOK_ERR;
break;
}
bp = pdp->rp_buf + len;
}
}
*bp = '\0';
if (type != RCS_TOK_ERR) {
for (i = 0; i < RCS_NKEYS; i++) {
if (strcmp(rcs_keys[i].rk_str,
pdp->rp_buf) == 0) {
type = rcs_keys[i].rk_id;
break;
}
}
}
} else if (ch == '@') {
/* we have a string */
type = RCS_TOK_STRING;
for (;;) {
ch = getc(pdp->rp_file);
if (ch == '@') {
ch = getc(pdp->rp_file);
if (ch != '@') {
ungetc(ch, pdp->rp_file);
break;
}
} else if (ch == '\n')
pdp->rp_lines++;
*(bp++) = ch;
pdp->rp_tlen++;
if (bp == pdp->rp_bufend - 1) {
len = bp - pdp->rp_buf;
if (rcs_growbuf(rfp) < 0) {
type = RCS_TOK_ERR;
break;
}
bp = pdp->rp_buf + len;
}
}
*bp = '\0';
} else if (isdigit(ch)) {
*(bp++) = ch;
last = ch;
type = RCS_TOK_NUM;
for (;;) {
ch = getc(pdp->rp_file);
if (bp == pdp->rp_bufend)
break;
if (!isdigit(ch) && ch != '.') {
ungetc(ch, pdp->rp_file);
break;
}
if (last == '.' && ch == '.') {
type = RCS_TOK_ERR;
break;
}
last = ch;
*(bp++) = ch;
pdp->rp_tlen++;
}
*bp = '\0';
}
return (type);
}
/*
* rcs_pushtok()
*
* Push a token back in the parser's token buffer.
*/
static int
rcs_pushtok(RCSFILE *rfp, const char *tok, int type)
{
struct rcs_pdata *pdp = (struct rcs_pdata *)rfp->rf_pdata;
if (pdp->rp_pttype != RCS_TOK_ERR)
return (-1);
pdp->rp_pttype = type;
strlcpy(pdp->rp_ptok, tok, sizeof(pdp->rp_ptok));
return (0);
}
/*
* rcs_splitlines()
*
* Split the contents of a file into a list of lines.
*/
static struct rcs_foo*
rcs_splitlines(const char *fcont)
{
char *dcp;
struct rcs_foo *foo;
struct rcs_line *lp;
foo = (struct rcs_foo *)malloc(sizeof(*foo));
if (foo == NULL) {
cvs_log(LP_ERR, "failed to allocate line structure");
return (NULL);
}
TAILQ_INIT(&(foo->rl_lines));
foo->rl_nblines = 0;
foo->rl_data = strdup(fcont);
if (foo->rl_data == NULL) {
cvs_log(LP_ERRNO, "failed to copy file contents");
free(foo);
return (NULL);
}
/*
* Add a first bogus line with line number 0. This is used so we
* can position the line pointer before 1 when changing the first line
* in rcs_patch().
*/
lp = (struct rcs_line *)malloc(sizeof(*lp));
if (lp == NULL) {
rcs_freefoo(foo);
return (NULL);
}
lp->rl_line = NULL;
lp->rl_lineno = 0;
TAILQ_INSERT_TAIL(&(foo->rl_lines), lp, rl_list);
for (dcp = foo->rl_data; *dcp != '\0';) {
lp = (struct rcs_line *)malloc(sizeof(*lp));
if (lp == NULL) {
rcs_freefoo(foo);
cvs_log(LP_ERR, "failed to allocate line entry");
return (NULL);
}
lp->rl_line = dcp;
lp->rl_lineno = ++(foo->rl_nblines);
TAILQ_INSERT_TAIL(&(foo->rl_lines), lp, rl_list);
dcp = strchr(dcp, '\n');
if (dcp == NULL) {
break;
}
*(dcp++) = '\0';
}
return (foo);
}
static void
rcs_freefoo(struct rcs_foo *fp)
{
struct rcs_line *lp;
while ((lp = TAILQ_FIRST(&fp->rl_lines)) != NULL) {
TAILQ_REMOVE(&fp->rl_lines, lp, rl_list);
free(lp);
}
free(fp->rl_data);
free(fp);
}
/*
* rcs_growbuf()
*
* Attempt to grow the internal parse buffer for the RCS file <rf> by
* RCS_BUFEXTSIZE.
* In case of failure, the original buffer is left unmodified.
* Returns 0 on success, or -1 on failure.
*/
static int
rcs_growbuf(RCSFILE *rf)
{
void *tmp;
struct rcs_pdata *pdp = (struct rcs_pdata *)rf->rf_pdata;
tmp = realloc(pdp->rp_buf, pdp->rp_blen + RCS_BUFEXTSIZE);
if (tmp == NULL) {
rcs_errno = RCS_ERR_ERRNO;
cvs_log(LP_ERRNO, "failed to grow RCS parse buffer");
return (-1);
}
pdp->rp_buf = (char *)tmp;
pdp->rp_blen += RCS_BUFEXTSIZE;
pdp->rp_bufend = pdp->rp_buf + pdp->rp_blen - 1;
return (0);
}
/*
* rcs_strprint()
*
* Output an RCS string <str> of size <slen> to the stream <stream>. Any
* '@' characters are escaped. Otherwise, the string can contain arbitrary
* binary data.
*/
static int
rcs_strprint(const u_char *str, size_t slen, FILE *stream)
{
const u_char *ap, *ep, *sp;
size_t ret;
if (slen == 0)
return (0);
ep = str + slen - 1;
for (sp = str; sp <= ep;) {
ap = memchr(sp, '@', ep - sp);
if (ap == NULL)
ap = ep;
ret = fwrite(sp, sizeof(u_char), ap - sp + 1, stream);
if (*ap == '@')
putc('@', stream);
sp = ap + 1;
}
return (0);
}
/*
* rcs_expand_keywords()
*
* Expand any RCS keywords in <line> into <out>
*/
static int
rcs_expand_keywords(char *rcsfile, struct rcs_delta *rdp, char *line, char *out,
size_t len, int mode)
{
int kwtype;
u_int i, j, found;
char *c, *kwstr, *start;
char expbuf[128], buf[128];
kwtype = 0;
kwstr = NULL;
i = 0;
/*
* Keyword formats:
* $Keyword$
* $Keyword: value$
*/
memset(out, '\0', len);
for (c = line; *c != '\0' && i < len; *c++) {
out[i++] = *c;
if (*c == '$') {
/* remember start of this possible keyword */
start = c;
/* first following character has to be alphanumeric */
*c++;
if (!isalpha(*c)) {
c = start;
continue;
}
/* look for any matching keywords */
found = 0;
for (j = 0; j < RCS_NKWORDS; j++) {
if (!strncmp(c, rcs_expkw[j].kw_str,
strlen(rcs_expkw[j].kw_str))) {
found = 1;
kwstr = rcs_expkw[j].kw_str;
kwtype = rcs_expkw[j].kw_type;
break;
}
}
/* unknown keyword, continue looking */
if (found == 0) {
c = start;
continue;
}
/* next character has to be ':' or '$' */
c += strlen(kwstr);
if (*c != ':' && *c != '$') {
c = start;
continue;
}
/*
* if the next character was ':' we need to look for
* an '$' before the end of the line to be sure it is
* in fact a keyword.
*/
if (*c == ':') {
while (*c++) {
if (*c == '$' || *c == '\n')
break;
}
if (*c != '$') {
c = start;
continue;
}
}
/* start constructing the expansion */
expbuf[0] = '\0';
if (mode & RCS_KWEXP_NAME) {
strlcat(expbuf, "$", sizeof(expbuf));
strlcat(expbuf, kwstr, sizeof(expbuf));
if (mode & RCS_KWEXP_VAL)
strlcat(expbuf, ": ", sizeof(expbuf));
}
/*
* order matters because of RCS_KW_ID and
* RCS_KW_HEADER here
*/
if (mode & RCS_KWEXP_VAL) {
if (kwtype & RCS_KW_RCSFILE) {
if (!(kwtype & RCS_KW_FULLPATH))
strlcat(expbuf,
basename(rcsfile),
sizeof(expbuf));
else
strlcat(expbuf, rcsfile,
sizeof(expbuf));
strlcat(expbuf, " ", sizeof(expbuf));
}
if (kwtype & RCS_KW_REVISION) {
rcsnum_tostr(rdp->rd_num, buf,
sizeof(buf));
strlcat(buf, " ", sizeof(buf));
strlcat(expbuf, buf, sizeof(expbuf));
}
if (kwtype & RCS_KW_DATE) {
strftime(buf, sizeof(buf),
"%Y/%m/%d %H:%M:%S ",
&rdp->rd_date);
strlcat(expbuf, buf, sizeof(expbuf));
}
if (kwtype & RCS_KW_AUTHOR) {
strlcat(expbuf, rdp->rd_author,
sizeof(expbuf));
strlcat(expbuf, " ", sizeof(expbuf));
}
if (kwtype & RCS_KW_STATE) {
strlcat(expbuf, rdp->rd_state,
sizeof(expbuf));
strlcat(expbuf, " ", sizeof(expbuf));
}
/* order does not matter anymore below */
if (kwtype & RCS_KW_LOG)
strlcat(expbuf, " ", sizeof(expbuf));
if (kwtype & RCS_KW_SOURCE) {
strlcat(expbuf, rcsfile,
sizeof(expbuf));
strlcat(expbuf, " ", sizeof(expbuf));
}
if (kwtype & RCS_KW_NAME)
strlcat(expbuf, " ", sizeof(expbuf));
}
/* end the expansion */
if (mode & RCS_KWEXP_NAME)
strlcat(expbuf, "$", sizeof(expbuf));
out[--i] = '\0';
strlcat(out, expbuf, len);
i += strlen(expbuf);
}
}
return (0);
}
/*
* rcs_deltatext_set()
*
* Set deltatext for <rev> in RCS file <rfp> to <dtext>
* Returns -1 on error, 0 on success.
*/
int
rcs_deltatext_set(RCSFILE *rfp, RCSNUM *rev, const char *dtext)
{
size_t len;
struct rcs_delta *rdp;
if ((rdp = rcs_findrev(rfp, rev)) == NULL)
return (-1);
if (rdp->rd_text != NULL)
free(rdp->rd_text);
len = strlen(dtext);
if ((rdp->rd_text = (u_char *)malloc(len)) == NULL)
return (-1);
rdp->rd_tlen = len - 1;
strlcpy(rdp->rd_text, dtext, len);
return (0);
}
/*
* rcs_rev_setlog()
*
* Sets the log message of revision <rev> to <logtext>
*/
int
rcs_rev_setlog(RCSFILE *rfp, RCSNUM *rev, const char *logtext)
{
struct rcs_delta *rdp;
char buf[16];
rcsnum_tostr(rev, buf, sizeof(buf));
printf("setting log for %s to '%s'\n", buf, logtext);
if ((rdp = rcs_findrev(rfp, rev)) == NULL)
return (-1);
if (rdp->rd_log != NULL)
cvs_strfree(rdp->rd_log);
if ((rdp->rd_log = cvs_strdup(logtext)) == NULL)
return (-1);
rfp->rf_flags &= ~RCS_SYNCED;
return (0);
}
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