#include "utility.h"

#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>

/*********** like malloc(), but will exit on error ********/
pvoid ctl_malloc(size_t size){
    void *ptr  = malloc(size);
    if(ptr == NULL){
        ctl_die(CTL_MEMORY);
    }
    return ptr;
}

/********** like realloc(), but will exit on error ********/
pvoid ctl_realloc(pvoid ptr, size_t size){
    ptr = realloc(ptr, size);
    if(ptr == NULL){
        ctl_die(CTL_MEMORY);
    }
    return ptr;
}

/*********** like free(), but will return NULL ************/
pvoid ctl_free(pvoid ptr){
    free(ptr);
    return NULL;
}

/********* print some message on STDERR and exit() ********/
void ctl_die(CtlErrorType e){
    fprintf(stderr, "exit(%d): ", (int)e);
    switch(e){
        case CTL_MEMORY:
            fprintf(stderr, "bad memory mananger\n");
            break;
    }
    exit((int)e);
}

/****************** strcmp in lower letter ****************/
int ctl_strcmpL(pcchar a, pcchar b){
    int i;
    char c1, c2;
    for(i = 0; a[i] != '\0' && b[i] != '\0'; i++){
        if('A' <= a[i] && a[i] <= 'Z') c1 = a[i] - 'A' + 'a';
        else                           c1 = a[i];
        if('A' <= b[i] && b[i] <= 'Z') c2 = b[i] - 'A' + 'a';
        else                           c2 = b[i];
        if(c1 < c2) return -1;
        if(c1 > c2) return  1;
    }
    if(a[i] < b[i]) return -1;
    if(a[i] > b[i]) return  1;
    return 0;
}