#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "config.h"
#include "exceptions.h"

char * contexts[128];
int clevel = 0;

char * Estrdup(char * o) {
        char * r;
        
        if (!(r = strdup(o))) {
                exception(1, _("Out of memory."));
        }
        return r;       
}

void * Emalloc(size_t s) {
        void * r;
        
        if (!(r = malloc(s))) {
                exception(1, _("Out of memory."));
        }
        return r;
}

void pushcontext(char * c) {
	if (clevel == 128) {
		exception(1, _("Too much error contexts during pushcontext()."));
	}
	contexts[clevel++] = Estrdup(c);
}

void popcontext(void) {
	if (clevel == 0) {
		exception(1, _("Error context empty, but popcontext() called."));
	}
	free(contexts[--clevel]);
}

void flushcontext(void) {
	while (clevel) {
		popcontext();
	}
}

void exception(int level, char *msg)
{
	int i;
	
	fprintf(stderr, "Error detected. Showing context.\n");
	for (i = 0; i < clevel; i++) {
		fprintf(stderr, " (%i) - %s\n", i, contexts[i]);
	}
        fprintf(stderr, "  Error description: %s\n", msg);
        exit(level);
}