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/*********************************************************************
// dar - disk archive - a backup/restoration program
// Copyright (C) 2002-2026 Denis Corbin
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
//
// to contact the author, see the AUTHOR file
*********************************************************************/
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#define TMP ".###tmp_file"
#define MAX 10240
char c='\n';
int main(int argc,char *argv[])
{
char buffer[MAX];
char sortie[2*MAX];
char *file;
int p;
register int i,lu,d;
if(argc < 2)
{
printf("usage : %s liste de fichiers\n",argv[0]);
return 1;
}
close(0);close(1);
for(p=1;p<argc;)
{
file = argv[p++];
if(open(file,O_RDONLY) != 0)
{
fprintf(stderr,"%s : fichier %s inaccessible\n",argv[0],file);
return 2;
}
if(open(TMP,O_WRONLY|O_CREAT,0600) != 1)
{
fprintf(stderr,"%s : ouverture du fichier temporaire %s impossible\n",argv[0],TMP);
return 3;
}
for(;;)
{
lu=read(0,buffer,MAX);
if(lu <= 0)
break;
for(i=0,d=0;i<lu;i++)
if(buffer[i] == c)
{
sortie[i+d]='\r';
d++;
sortie[i+d]=buffer[i];
}
else
sortie[i+d]=buffer[i];
write(1,sortie,lu+d);
}
close(1);close(0);
if(unlink(file) == 0)
{
if(rename(TMP, file) != 0)
{
fprintf(stderr, "%s : failed moving tmp file to %s: %s",
argv[0],
file,
strerror(errno));
return 4;
}
}
else
{
fprintf(stderr, "%s : failed deleting %s to remplace it by updated content: %s",
argv[0],
file,
strerror(errno));
return 4;
}
}
return 0;
}
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