#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <openssl/objects.h>

#include <openssl/comp.h>

EXPORT_C COMP_CTX *COMP_CTX_new(COMP_METHOD *meth)

	{

	COMP_CTX *ret;

	if ((ret=(COMP_CTX *)OPENSSL_malloc(sizeof(COMP_CTX))) == NULL)

		{

		/* ZZZZZZZZZZZZZZZZ */

		return(NULL);

		}

	memset(ret,0,sizeof(COMP_CTX));

	ret->meth=meth;

	if ((ret->meth->init != NULL) && !ret->meth->init(ret))

		{

		OPENSSL_free(ret);

		ret=NULL;

		}

	return(ret);

	}

EXPORT_C void COMP_CTX_free(COMP_CTX *ctx)

	{

	if(ctx == NULL)

	    return;

	if (ctx->meth->finish != NULL)

		ctx->meth->finish(ctx);

	OPENSSL_free(ctx);

	}

EXPORT_C int COMP_compress_block(COMP_CTX *ctx, unsigned char *out, int olen,

	     unsigned char *in, int ilen)

	{

	int ret;

	if (ctx->meth->compress == NULL)

		{

		/* ZZZZZZZZZZZZZZZZZ */

		return(-1);

		}

	ret=ctx->meth->compress(ctx,out,olen,in,ilen);

	if (ret > 0)

		{

		ctx->compress_in+=ilen;

		ctx->compress_out+=ret;

		}

	return(ret);

	}

EXPORT_C int COMP_expand_block(COMP_CTX *ctx, unsigned char *out, int olen,

	     unsigned char *in, int ilen)

	{

	int ret;

	if (ctx->meth->expand == NULL)

		{

		/* ZZZZZZZZZZZZZZZZZ */

		return(-1);

		}

	ret=ctx->meth->expand(ctx,out,olen,in,ilen);

	if (ret > 0)

		{

		ctx->expand_in+=ilen;

		ctx->expand_out+=ret;

		}

	return(ret);

	}