#ifdef HAVE_CONFIG_H

#include "config.h"

#endif

#include "gd.h"

#include "gdhelpers.h"

#include <stdlib.h>

#include <string.h>

#include <sys/types.h>

#include <ctype.h>

/* TBB: gd_strtok_r is not portable; provide an implementation */

#define SEP_TEST (separators[*((unsigned char *) s)])

char *

gd_strtok_r (char *s, char *sep, char **state)

{

	char separators[256];

	char *result = 0;

	memset (separators, 0, sizeof (separators));

	while (*sep) {

		separators[*((unsigned char *) sep)] = 1;

		sep++;

	}

	if (!s) {

		/* Pick up where we left off */

		s = *state;

	}

	/* 1. EOS */

	if (!(*s)) {

		*state = s;

		return 0;

	}

	/* 2. Leading separators, if any */

	if (SEP_TEST) {

		do {

			s++;

		} while (SEP_TEST);

		/* 2a. EOS after separators only */

		if (!(*s)) {

			*state = s;

			return 0;

		}

	}

	/* 3. A token */

	result = s;

	do {

		/* 3a. Token at end of string */

		if (!(*s)) {

			*state = s;

			return result;

		}

		s++;

	} while (!SEP_TEST);

	/* 4. Terminate token and skip trailing separators */

	*s = '\0';

	do {

		s++;

	} while (SEP_TEST);

	/* 5. Return token */

	*state = s;

	return result;

}

void * gdCalloc (size_t nmemb, size_t size)

{

	return calloc (nmemb, size);

}

void *

gdMalloc (size_t size)

{

	return malloc (size);

}

void *

gdRealloc (void *ptr, size_t size)

{

	return realloc (ptr, size);

}

void *

gdReallocEx (void *ptr, size_t size)

{

	void *newPtr = gdRealloc (ptr, size);

	if (!newPtr && ptr)

		gdFree(ptr);

	return newPtr;

}

/*

  Function: gdFree

    Frees memory that has been allocated by libgd functions.

	Unless more specialized functions exists (for instance, <gdImageDestroy>),

	all memory that has been allocated by public libgd functions has to be

	freed by calling <gdFree>, and not by free(3), because libgd internally

	doesn't use alloc(3) and friends but rather its own allocation functions,

	which are, however, not publicly available.

  Parameters:

	ptr - Pointer to the memory space to free. If it is NULL, no operation is

		  performed.

  Returns:

	Nothing.

*/

BGD_DECLARE(void) gdFree (void *ptr)

{

	free (ptr);

}