libisofs/demo/cat.c

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/*
* Copyright (c) 2007 Vreixo Formoso
*
* This file is part of the libisofs project; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation. See COPYING file for details.
*/
#include "libisofs.h"
#include "fsource.h"
#include <stdio.h>
#include <stdlib.h>
/*
* Little test program to test filesystem implementations.
* Outputs file contents to stdout!
*/
int main(int argc, char **argv)
{
int res;
IsoFilesystem *fs;
IsoFileSource *file;
struct stat info;
if (argc != 2) {
fprintf(stderr, "Usage: cat /path/to/file\n");
return 1;
}
/* create filesystem object */
res = iso_local_filesystem_new(&fs);
if (res < 0) {
fprintf(stderr, "Can't get local fs object, err = %d\n", res);
return 1;
}
res = fs->get_by_path(fs, argv[1], &file);
if (res < 0) {
fprintf(stderr, "Can't get file, err = %d\n", res);
return 1;
}
res = file->lstat(file, &info);
if (res < 0) {
fprintf(stderr, "Can't stat file, err = %d\n", res);
return 1;
}
if (S_ISDIR(info.st_mode)) {
fprintf(stderr, "Path refers to a directory!!\n");
return 1;
} else {
char buf[1024];
res = file->open(file);
if (res < 0) {
fprintf(stderr, "Can't open file, err = %d\n", res);
return 1;
}
while ((res = file->read(file, buf, 1024)) > 0) {
fwrite(buf, 1, res, stdout);
}
if (res < 0) {
fprintf(stderr, "Error reading, err = %d\n", res);
return 1;
}
file->close(file);
}
iso_file_source_unref(file);
iso_filesystem_unref(fs);
return 0;
}