zlibinterface.c

psp上的reader 这个是以月光老大的cnreader为基础 增加了zip文件浏览功能

#include "zlibType.h"
#include "zlibFileMemory.h"
#include "zlibInterface.h"

#include "zlib.h"
#include "unzip.h"

#define IsShiftJIS(x) ((unsigned char)((x ^ 0x20) - 0xA1) <= 0x3B)

int (*___zlib_pfuncCallback)(int nCallbackId, unsigned long ulExtractSize,
		    				  unsigned long ulCurrentPosition, const void *pData,
                     		  unsigned long ulDataSize, unsigned long ulUserData) = NULL;



void Unzip_setCallback(int (*pfuncCallback)(int nCallbackId, unsigned long ulExtractSize,
		      		   unsigned long ulCurrentPosition, const void *pData,
                       unsigned long ulDataSize, unsigned long ulUserData))
{
	___zlib_pfuncCallback = pfuncCallback;
}


int Unzip_execExtract(const char *pszTargetFile, unsigned long ulUserData)
{
	unzFile hUnzip;
	int nRet = UZEXR_FATALERROR;
	if (!___zlib_pfuncCallback) return UZEXR_INVALIDCALLBACK;

	hUnzip = unzOpen(pszTargetFile);
	if (!hUnzip)	return UZEXR_INVALIDFILE;

	do
	{
		char szConFilename[512];
		unz_file_info fileInfo;
		int nLen,i;

		if (unzGetCurrentFileInfo(hUnzip, &fileInfo, szConFilename, sizeof szConFilename, NULL, 0, NULL, 0) != UNZ_OK) {
			nRet = UZEXR_INVALIDFILE;
			break;
		}

		nLen = ___strlen(szConFilename);
		// 僨傿儗僋僩儕偺応崌
		if (nLen >= 2 && !IsShiftJIS(szConFilename[nLen - 2]) && szConFilename[nLen - 1] == '\\') {
			continue;
		}

		// 僼傽僀儖偺応崌丄傑偢僐乕儖僶僢僋偱揥奐偡傞偐暦偔
		nRet = ___zlib_pfuncCallback(UZCB_FIND_FILE, fileInfo.uncompressed_size,
		                                0, szConFilename, 0, ulUserData);
		if (nRet == UZCBR_PASS) {
			nRet = unzGoToNextFile(hUnzip);
			if (nRet == UNZ_END_OF_LIST_OF_FILE) {
				nRet = UZEXR_OK;
				break;
			}
			continue;
		}
		else if (nRet == UZCBR_CANCEL) {
			nRet = UZEXR_CANCEL;
			break;
		}

/* 偨傇傫梫傜側偄
		for (i = 0; i < nLen; ++i)
		if (szConFilename[i] == '/')
		szConFilename[i] = '\\';	//Windows側偺偱丄\儅乕僋偑僨傿儗僋僩儕偺嬫愗傝偲側傞
*/

		// 僼傽僀儖偺応崌
		if (unzOpenCurrentFile(hUnzip) != UNZ_OK) {
			nRet = UZEXR_INVALIDFILE;
			break;
		}

		// 僨乕僞偺揥奐
		{
			unsigned char szBuffer[8192];
			unsigned long dwSizeRead;
			unsigned long dwBufPosition = 0;
			while ((dwSizeRead = unzReadCurrentFile(hUnzip, szBuffer, sizeof(szBuffer))) > 0)
			{
				nRet = ___zlib_pfuncCallback(UZCB_EXTRACT_PROGRESS, fileInfo.uncompressed_size,
				                                dwBufPosition, szBuffer, dwSizeRead, ulUserData);
				dwBufPosition += dwSizeRead;
				if (nRet == UZCBR_PASS) {
					break;
				}
				else if (nRet == UZCBR_CANCEL) {
					unzCloseCurrentFile(hUnzip);
					unzClose(hUnzip);
					return UZEXR_CANCEL;
				}
			}
		}
		unzCloseCurrentFile(hUnzip);
		nRet = unzGoToNextFile(hUnzip);
		if (nRet == UNZ_END_OF_LIST_OF_FILE) {
			nRet = UZEXR_OK;
			break;
		}
	} while (1);

	unzClose(hUnzip);

	return nRet;	//夝搥偡傞傕偺偑柍偄偺偱丄夝搥偟側偐偭偨丅

}