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84 lines
1.3 KiB

#include <unistd.h>
#include "uint32.h"
#include "fmt.h"
#include "buffer.h"
#include "strerr.h"
#define FATAL "cdbdump: fatal: "
void die_write(void)
{
strerr_die2sys(111,FATAL,"unable to write output: ");
}
void put(char *buf,unsigned int len)
{
if (buffer_put(buffer_1,buf,len) == -1) die_write();
}
void putflush(void)
{
if (buffer_flush(buffer_1) == -1) die_write();
}
uint32 pos = 0;
void get(char *buf,unsigned int len)
{
int r;
while (len > 0) {
r = buffer_get(buffer_0,buf,len);
if (r == -1)
strerr_die2sys(111,FATAL,"unable to read input: ");
if (r == 0)
strerr_die2x(111,FATAL,"unable to read input: truncated file");
pos += r;
buf += r;
len -= r;
}
}
char buf[512];
void copy(uint32 len)
{
unsigned int x;
while (len) {
x = sizeof buf;
if (len < x) x = len;
get(buf,x);
put(buf,x);
len -= x;
}
}
void getnum(uint32 *num)
{
get(buf,4);
uint32_unpack(buf,num);
}
char strnum[FMT_ULONG];
int main()
{
uint32 eod;
uint32 klen;
uint32 dlen;
getnum(&eod);
while (pos < 2048) getnum(&dlen);
while (pos < eod) {
getnum(&klen);
getnum(&dlen);
put("+",1); put(strnum,fmt_ulong(strnum,klen));
put(",",1); put(strnum,fmt_ulong(strnum,dlen));
put(":",1); copy(klen);
put("->",2); copy(dlen);
put("\n",1);
}
put("\n",1);
putflush();
_exit(0);
}