mirror of
https://github.com/hsoft/collapseos.git
synced 2024-12-26 04:18:05 +11:00
44 lines
960 B
C
44 lines
960 B
C
|
#include <stdio.h>
|
||
|
#include <stdlib.h>
|
||
|
#include <unistd.h>
|
||
|
#include <string.h>
|
||
|
#include <sys/stat.h>
|
||
|
|
||
|
void usage()
|
||
|
{
|
||
|
fprintf(stderr, "Usage: blkunpack dirname\n");
|
||
|
}
|
||
|
|
||
|
int main(int argc, char *argv[])
|
||
|
{
|
||
|
char buf[1024];
|
||
|
int blkid = 0;
|
||
|
if (argc != 2) {
|
||
|
usage();
|
||
|
return 1;
|
||
|
}
|
||
|
while (fread(buf, 1024, 1, stdin) == 1) {
|
||
|
char fullpath[0x200];
|
||
|
sprintf(fullpath, "%s/%03d", argv[1], blkid);
|
||
|
char c = 0;
|
||
|
for (int i=0; i<1024; i++) {
|
||
|
c |= buf[i];
|
||
|
}
|
||
|
if (c) {
|
||
|
// not an empty block
|
||
|
FILE *fp = fopen(fullpath, "w");
|
||
|
for (int i=0; i<16; i++) {
|
||
|
int len = strlen(&buf[i*64]);
|
||
|
fwrite(&buf[i*64], len, 1, fp);
|
||
|
fputc('\n', fp);
|
||
|
}
|
||
|
fclose(fp);
|
||
|
} else {
|
||
|
// empty block, delete
|
||
|
unlink(fullpath);
|
||
|
}
|
||
|
blkid++;
|
||
|
}
|
||
|
return 0;
|
||
|
}
|