Util.c

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#include <stdlib.h>

#include <string.h>
#include <stdarg.h>
#include <stdio.h>

#include "MEM_guardedalloc.h"

#include "Util.h"

void* memdbl(void *mem, int *size_pr, int item_size) {
    int cur_size= *size_pr;
    int new_size= cur_size?(cur_size*2):1;
    void *nmem= MEM_mallocN(new_size*item_size, "memdbl");
    
    memcpy(nmem, mem, cur_size*item_size);
    MEM_freeN(mem);
        
    *size_pr= new_size;
    return nmem;
}

char* string_dup(char *str) {
    int len= strlen(str);
    char *nstr= MEM_mallocN(len + 1, "string_dup");

    memcpy(nstr, str, len+1);
    
    return nstr;
}

void fatal(char *fmt, ...) {
    va_list ap;
    
    fprintf(stderr, "FATAL: ");
    va_start(ap, fmt);
    vfprintf(stderr, fmt, ap);
    va_end(ap);
    fprintf(stderr, "\n");
    
    exit(1);
}