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/*
* dbd - dump a dbm data file
*/
#include <stdio.h>
#include <sys/file.h>
#include "EXTERN.h"
#include "sdbm.h"
char *progname;
extern void oops();
#define empty(page) (((short *) page)[0] == 0)
int
main(int argc, char **argv)
{
int n;
char *p;
char *name;
int pagf;
progname = argv[0];
if (p = argv[1]) {
name = (char *) malloc((n = strlen(p)) + 5);
if (!name)
oops("cannot get memory");
strcpy(name, p);
strcpy(name + n, ".pag");
if ((pagf = open(name, O_RDONLY)) < 0)
oops("cannot open %s.", name);
sdump(pagf);
}
else
oops("usage: %s dbname", progname);
return 0;
}
void
sdump(int pagf)
{
int r;
int n = 0;
int o = 0;
char pag[PBLKSIZ];
while ((r = read(pagf, pag, PBLKSIZ)) > 0) {
if (!okpage(pag))
fprintf(stderr, "%d: bad page.\n", n);
else if (empty(pag))
o++;
else
dispage(pag);
n++;
}
if (r == 0)
fprintf(stderr, "%d pages (%d holes).\n", n, o);
else
oops("read failed: block %d", n);
}
#ifdef OLD
int
dispage(char *pag)
{
int i, n;
int off;
int short *ino = (short *) pag;
off = PBLKSIZ;
for (i = 1; i < ino[0]; i += 2) {
printf("\t[%d]: ", ino[i]);
for (n = ino[i]; n < off; n++)
putchar(pag[n]);
putchar(' ');
off = ino[i];
printf("[%d]: ", ino[i + 1]);
for (n = ino[i + 1]; n < off; n++)
putchar(pag[n]);
off = ino[i + 1];
putchar('\n');
}
}
#else
void
dispage(char *pag)
{
int i, n;
int off;
short *ino = (short *) pag;
off = PBLKSIZ;
for (i = 1; i < ino[0]; i += 2) {
for (n = ino[i]; n < off; n++)
if (pag[n] != 0)
putchar(pag[n]);
putchar('\t');
off = ino[i];
for (n = ino[i + 1]; n < off; n++)
if (pag[n] != 0)
putchar(pag[n]);
putchar('\n');
off = ino[i + 1];
}
}
#endif
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