strndup.c
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strndup.c
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	# include "defines.h"

	#undef strndup


	/**
	* Allocate a new character array. Copy into it at most
	* maxBytes bytes.
	*/
	char *
	rpl_strndup (const char *dupMe, size_t maxBytes)
	{
	char *ptr = NULL;
	char *retMe = NULL;

	/* Configure maxBytes to be the number of bytes to copy */
	maxBytes = MIN(strlen(dupMe), maxBytes);
	/* Allocate the return buffer. */
	retMe = malloc (maxBytes + 1);
	/* Was the allocation successful? */
	if (NULL == retMe)
	{
	return NULL;
	}

	/*
	* ptr will point to the byte to which to copy the next
	* source byte.
	*/
	ptr = retMe;
	/*
	* Continue while dupMe is valid and we are < maxBytes number
	* of bytes copied. This is typecase here because size_t is
	* unsigned, so comparing against > 0 should produce a
	* warning :)
	*/
	while (dupMe && (int) maxBytes-- > 0)
	{
	ptr++ = dupMe++;
	}

	/* Be sure to NULL terminate the array */
	*ptr = 0;
	return retMe;
	}