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#include "common.h"
#include <libsec.h>
#include "dat.h"
/* all the data that's fit to cache */
typedef struct{
char *s;
int l;
ulong ref;
}Refs;
Refs *rtab;
int nrtab;
int nralloc;
int
newrefs(char *s)
{
int l, i;
Refs *r;
l = strlen(s);
for(i = 0; i < nrtab; i++){
r = rtab + i;
if(r->ref == 0)
goto enter;
if(l == r->l && strcmp(r->s, s) == 0){
r->ref++;
return i;
}
}
if(nrtab == nralloc)
rtab = erealloc(rtab, sizeof *rtab*(nralloc += 50));
nrtab = i + 1;
enter:
r = rtab + i;
r->s = strdup(s);
r->l = l;
r->ref = 1;
return i;
}
void
delrefs(int i)
{
Refs *r;
r = rtab + i;
if(--r->ref > 0)
return;
free(r->s);
memset(r, 0, sizeof *r);
}
void
refsinit(void)
{
newrefs("");
}
static char *sep = "--------\n";
int
prrefs(Biobuf *b)
{
int i, n;
n = 0;
for(i = 1; i < nrtab; i++){
if(rtab[i].ref == 0)
continue;
Bprint(b, "%s ", rtab[i].s);
if(n++%8 == 7)
Bprint(b, "\n");
}
if(n%8 != 7)
Bprint(b, "\n");
Bprint(b, sep);
return 0;
}
int
rdrefs(Biobuf *b)
{
char *f[10], *s;
int i, n;
while(s = Brdstr(b, '\n', 1)){
if(strcmp(s, sep) == 0){
free(s);
return 0;
}
n = tokenize(s, f, nelem(f));
for(i = 0; i < n; i++)
newrefs(f[i]);
free(s);
}
return -1;
}
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