This is no_diff.c in view mode; [Download] [Up]
/*
* Copyright (c) 1992, Brian Berliner and Jeff Polk
* Copyright (c) 1989-1992, Brian Berliner
*
* You may distribute under the terms of the GNU General Public License as
* specified in the README file that comes with the CVS 1.4 kit.
*
* No Difference
*
* The user file looks modified judging from its time stamp; however it needn't
* be. No_difference() finds out whether it is or not. If it is not, it
* updates the administration.
*
* returns 0 if no differences are found and non-zero otherwise
*/
#include "cvs.h"
#ifndef lint
static const char rcsid[] = "$CVSid: @(#)no_diff.c 1.39 94/10/07 $";
USE(rcsid)
#endif
int
No_Difference (file, vers, entries, repository, update_dir)
char *file;
Vers_TS *vers;
List *entries;
char *repository;
char *update_dir;
{
Node *p;
char tmp[L_tmpnam+1];
int ret;
char *ts, *options;
int retcode = 0;
char *tocvsPath;
if (!vers->srcfile || !vers->srcfile->path)
return (-1); /* different since we couldn't tell */
if (vers->entdata && vers->entdata->options)
options = xstrdup (vers->entdata->options);
else
options = xstrdup ("");
run_setup ("%s%s -p -q -r%s %s", Rcsbin, RCS_CO,
vers->vn_user ? vers->vn_user : "", options);
run_arg (vers->srcfile->path);
if ((retcode = run_exec (RUN_TTY, tmpnam (tmp), RUN_TTY, RUN_REALLY)) == 0)
{
#if 0
/* Why would we want to munge the modes? And only if the timestamps
are different? And even for commands like "cvs status"???? */
if (!iswritable (file)) /* fix the modes as a side effect */
xchmod (file, 1);
#endif
tocvsPath = wrap_tocvs_process_file (file);
/* do the byte by byte compare */
if (xcmp (tocvsPath == NULL ? file : tocvsPath, tmp) == 0)
{
#if 0
/* Why would we want to munge the modes? And only if the
timestamps are different? And even for commands like
"cvs status"???? */
if (cvswrite == FALSE) /* fix the modes as a side effect */
xchmod (file, 0);
#endif
/* no difference was found, so fix the entries file */
ts = time_stamp (file);
Register (entries, file,
vers->vn_user ? vers->vn_user : vers->vn_rcs, ts,
options, vers->tag, vers->date, (char *) 0);
#ifdef SERVER_SUPPORT
if (server_active)
{
/* We need to update the entries line on the client side. */
server_update_entries
(file, update_dir, repository, SERVER_UPDATED);
}
#endif
free (ts);
/* update the entdata pointer in the vers_ts structure */
p = findnode (entries, file);
vers->entdata = (Entnode *) p->data;
ret = 0;
}
else
ret = 1; /* files were really different */
if (tocvsPath)
{
/* Need to call unlink myself because the noexec variable
* has been set to 1. */
if (trace)
(void) fprintf (stderr, "%c-> unlink (%s)\n",
#ifdef SERVER_SUPPORT
(server_active) ? 'S' : ' ',
#else
' ',
#endif
tocvsPath);
if (unlink (tocvsPath) < 0)
error (0, errno, "could not remove %s", tocvsPath);
}
}
else
{
if (update_dir[0] == '\0')
error (0, retcode == -1 ? errno : 0,
"could not check out revision %s of %s",
vers->vn_user, file);
else
error (0, retcode == -1 ? errno : 0,
"could not check out revision %s of %s/%s",
vers->vn_user, update_dir, file);
ret = -1; /* different since we couldn't tell */
}
if (trace)
#ifdef SERVER_SUPPORT
(void) fprintf (stderr, "%c-> unlink2 (%s)\n",
(server_active) ? 'S' : ' ', tmp);
#else
(void) fprintf (stderr, "-> unlink (%s)\n", tmp);
#endif
if (unlink (tmp) < 0)
error (0, errno, "could not remove %s", tmp);
free (options);
return (ret);
}
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