| 28 |
|
#define MINRUN 4 /* minimum run length */ |
| 29 |
|
|
| 30 |
|
|
| 31 |
< |
char * |
| 31 |
> |
void * |
| 32 |
|
tempbuffer( /* get a temporary buffer */ |
| 33 |
|
unsigned int len |
| 34 |
|
) |
| 35 |
|
{ |
| 36 |
< |
static char *tempbuf = NULL; |
| 37 |
< |
static unsigned tempbuflen = 0; |
| 36 |
> |
static void *tempbuf = NULL; |
| 37 |
> |
static unsigned int tempbuflen = 0; |
| 38 |
|
|
| 39 |
< |
if (!len | (len > tempbuflen)) { |
| 40 |
< |
if (tempbuflen) |
| 39 |
> |
if (!len) { /* call to free */ |
| 40 |
> |
if (tempbuflen) { |
| 41 |
|
free(tempbuf); |
| 42 |
< |
tempbuf = len ? (char *)malloc(len) : (char *)NULL; |
| 43 |
< |
tempbuflen = len*(tempbuf != NULL); |
| 42 |
> |
tempbuf = NULL; |
| 43 |
> |
tempbuflen = 0; |
| 44 |
> |
} |
| 45 |
> |
return(NULL); |
| 46 |
|
} |
| 47 |
+ |
if (len <= tempbuflen) /* big enough already? */ |
| 48 |
+ |
return(tempbuf); |
| 49 |
+ |
/* else free & reallocate */ |
| 50 |
+ |
if (tempbuflen) |
| 51 |
+ |
free(tempbuf); |
| 52 |
+ |
tempbuf = malloc(len); |
| 53 |
+ |
tempbuflen = len*(tempbuf != NULL); |
| 54 |
|
return(tempbuf); |
| 55 |
|
} |
| 56 |
|
|
