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/* cocos2d for iPhone
*
* http://www.cocos2d-iphone.org
*
*
* inflateMemory_ based on zlib example code
* http://www.zlib.net
*
* Some ideas were taken from:
* http://themanaworld.org/
* from the mapreader.cpp file
*
*/
#ifndef __CC_ZIP_UTILS_H
#define __CC_ZIP_UTILS_H
#import <stdint.h>
#ifdef __cplusplus
extern "C" {
#endif
/* XXX: pragma pack ??? */
/** @struct CCZHeader
*/
struct CCZHeader {
uint8_t sig[4]; // signature. Should be 'CCZ!' 4 bytes
uint16_t compression_type; // should 0
uint16_t version; // should be 2 (although version type==1 is also supported)
uint32_t reserved; // Reserverd for users.
uint32_t len; // size of the uncompressed file
};
enum {
CCZ_COMPRESSION_ZLIB, // zlib format.
CCZ_COMPRESSION_BZIP2, // bzip2 format (not supported yet)
CCZ_COMPRESSION_GZIP, // gzip format (not supported yet)
CCZ_COMPRESSION_NONE, // plain (not supported yet)
};
/** @file
* Zip helper functions
*/
/**
* Inflates either zlib or gzip deflated memory. The inflated memory is
* expected to be freed by the caller.
*
* It will allocate 256k for the destination buffer. If it is not enought it will multiply the previous buffer size per 2, until there is enough memory.
* @returns the length of the deflated buffer
*
@since v0.8.1
*/
int ccInflateMemory(unsigned char *in, unsigned int inLength, unsigned char **out);
/**
* Inflates either zlib or gzip deflated memory. The inflated memory is
* expected to be freed by the caller.
*
* outLenghtHint is assumed to be the needed room to allocate the inflated buffer.
*
* @returns the length of the deflated buffer
*
@since v1.0.0
*/
int ccInflateMemoryWithHint(unsigned char *in, unsigned int inLength, unsigned char **out, unsigned int outLenghtHint );
/** inflates a GZip file into memory
*
* @returns the length of the deflated buffer
*
* @since v0.99.5
*/
int ccInflateGZipFile(const char *filename, unsigned char **out);
/** inflates a CCZ file into memory
*
* @returns the length of the deflated buffer
*
* @since v0.99.5
*/
int ccInflateCCZFile(const char *filename, unsigned char **out);
#ifdef __cplusplus
}
#endif
#endif // __CC_ZIP_UTILS_H
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