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/* strpool.C
* John Viega
*
* Note that string pool starts at 1 as far as the outside is concerned.
* This is so that you can initialize to 0 and know the string hasn't been
* set yet.
*
* Feb 8, 2000
*/
#include "fatal.H"
#include "config.H"
#ifdef ITS4_DEBUG
#include <stdio.h>
#endif
// How big does the string pool start out by default?
#define STRPOOL_BASE_SIZE 16384
// How much should we add to it when we have to grow it?
#define STRPOOL_INCR 8192
char *pool;
int capacity, incr, size;
void InitStringPool(int c, int i)
{
capacity = c;
incr = i;
size = 0;
pool = new char[c];
if(!pool)
OutOfMemory();
}
void InitStringPool()
{
InitStringPool(STRPOOL_BASE_SIZE, STRPOOL_INCR);
}
void ExpandPool()
{
#ifdef ITS4_DEBUG
fprintf(stderr, "Warning: string pool too small.\n");
#endif
char *newpool = new char[capacity+=incr];
if(!newpool)
OutOfMemory();
memcpy(newpool, pool, size);
delete[] pool;
pool = newpool;
}
int AddStringToPool(char *s)
{
int l = strlen(s) + 1;
while(capacity < size + l)
ExpandPool();
strcpy(&(pool[size]), s); // ITS4: ignore strcpy
int r = size + 1;
size += l;
return r;
}
char *GetString(int l)
{
return &pool[l-1];
}
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