320 lines
9.3 KiB
C++
320 lines
9.3 KiB
C++
/*
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Open Asset Import Library (assimp)
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----------------------------------------------------------------------
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Copyright (c) 2006-2008, assimp team
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All rights reserved.
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Redistribution and use of this software in source and binary forms,
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with or without modification, are permitted provided that the
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following conditions are met:
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* Redistributions of source code must retain the above
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copyright notice, this list of conditions and the
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following disclaimer.
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* Redistributions in binary form must reproduce the above
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copyright notice, this list of conditions and the
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following disclaimer in the documentation and/or other
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materials provided with the distribution.
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* Neither the name of the assimp team, nor the names of its
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contributors may be used to endorse or promote products
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derived from this software without specific prior
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written permission of the assimp team.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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----------------------------------------------------------------------
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*/
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#ifndef ASSIMP_BUILD_NO_Q3BSP_IMPORTER
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#include "Q3BSPZipArchive.h"
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#include <algorithm>
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#include <cassert>
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#include "../include/assimp/ai_assert.h"
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namespace Assimp {
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namespace Q3BSP {
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voidpf IOSystem2Unzip::open(voidpf opaque, const char* filename, int mode) {
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IOSystem* io_system = (IOSystem*) opaque;
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const char* mode_fopen = NULL;
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if((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ) {
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mode_fopen = "rb";
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} else {
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if(mode & ZLIB_FILEFUNC_MODE_EXISTING) {
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mode_fopen = "r+b";
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} else {
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if(mode & ZLIB_FILEFUNC_MODE_CREATE) {
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mode_fopen = "wb";
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}
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}
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}
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return (voidpf) io_system->Open(filename, mode_fopen);
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}
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uLong IOSystem2Unzip::read(voidpf /*opaque*/, voidpf stream, void* buf, uLong size) {
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IOStream* io_stream = (IOStream*) stream;
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return io_stream->Read(buf, 1, size);
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}
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uLong IOSystem2Unzip::write(voidpf /*opaque*/, voidpf stream, const void* buf, uLong size) {
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IOStream* io_stream = (IOStream*) stream;
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return io_stream->Write(buf, 1, size);
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}
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long IOSystem2Unzip::tell(voidpf /*opaque*/, voidpf stream) {
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IOStream* io_stream = (IOStream*) stream;
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return io_stream->Tell();
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}
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long IOSystem2Unzip::seek(voidpf /*opaque*/, voidpf stream, uLong offset, int origin) {
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IOStream* io_stream = (IOStream*) stream;
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aiOrigin assimp_origin;
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switch (origin) {
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default:
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case ZLIB_FILEFUNC_SEEK_CUR:
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assimp_origin = aiOrigin_CUR;
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break;
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case ZLIB_FILEFUNC_SEEK_END:
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assimp_origin = aiOrigin_END;
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break;
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case ZLIB_FILEFUNC_SEEK_SET:
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assimp_origin = aiOrigin_SET;
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break;
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}
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return (io_stream->Seek(offset, assimp_origin) == aiReturn_SUCCESS ? 0 : -1);
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}
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int IOSystem2Unzip::close(voidpf opaque, voidpf stream) {
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IOSystem* io_system = (IOSystem*) opaque;
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IOStream* io_stream = (IOStream*) stream;
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io_system->Close(io_stream);
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return 0;
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}
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int IOSystem2Unzip::testerror(voidpf /*opaque*/, voidpf /*stream*/) {
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return 0;
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}
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zlib_filefunc_def IOSystem2Unzip::get(IOSystem* pIOHandler) {
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zlib_filefunc_def mapping;
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mapping.zopen_file = open;
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mapping.zread_file = read;
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mapping.zwrite_file = write;
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mapping.ztell_file = tell;
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mapping.zseek_file = seek;
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mapping.zclose_file = close;
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mapping.zerror_file = testerror;
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mapping.opaque = (voidpf) pIOHandler;
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return mapping;
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}
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// ------------------------------------------------------------------------------------------------
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ZipFile::ZipFile(size_t size) : m_Size(size) {
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ai_assert(m_Size != 0);
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m_Buffer = malloc(m_Size);
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}
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ZipFile::~ZipFile() {
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free(m_Buffer);
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m_Buffer = NULL;
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}
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size_t ZipFile::Read(void* pvBuffer, size_t pSize, size_t pCount) {
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const size_t size = pSize * pCount;
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assert(size <= m_Size);
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std::memcpy(pvBuffer, m_Buffer, size);
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return size;
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}
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size_t ZipFile::Write(const void* /*pvBuffer*/, size_t /*pSize*/, size_t /*pCount*/) {
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return 0;
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}
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size_t ZipFile::FileSize() const {
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return m_Size;
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}
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aiReturn ZipFile::Seek(size_t /*pOffset*/, aiOrigin /*pOrigin*/) {
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return aiReturn_FAILURE;
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}
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size_t ZipFile::Tell() const {
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return 0;
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}
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void ZipFile::Flush() {
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// empty
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}
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// ------------------------------------------------------------------------------------------------
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// Constructor.
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Q3BSPZipArchive::Q3BSPZipArchive(IOSystem* pIOHandler, const std::string& rFile) : m_ZipFileHandle(NULL), m_ArchiveMap() {
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if (! rFile.empty()) {
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zlib_filefunc_def mapping = IOSystem2Unzip::get(pIOHandler);
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m_ZipFileHandle = unzOpen2(rFile.c_str(), &mapping);
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if(m_ZipFileHandle != NULL) {
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mapArchive();
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}
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}
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}
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// ------------------------------------------------------------------------------------------------
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// Destructor.
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Q3BSPZipArchive::~Q3BSPZipArchive() {
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for( std::map<std::string, ZipFile*>::iterator it(m_ArchiveMap.begin()), end(m_ArchiveMap.end()); it != end; ++it ) {
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delete it->second;
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}
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m_ArchiveMap.clear();
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if(m_ZipFileHandle != NULL) {
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unzClose(m_ZipFileHandle);
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m_ZipFileHandle = NULL;
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}
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}
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// ------------------------------------------------------------------------------------------------
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// Returns true, if the archive is already open.
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bool Q3BSPZipArchive::isOpen() const {
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return (m_ZipFileHandle != NULL);
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}
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// ------------------------------------------------------------------------------------------------
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// Returns true, if the filename is part of the archive.
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bool Q3BSPZipArchive::Exists(const char* pFile) const {
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ai_assert(pFile != NULL);
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bool exist = false;
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if (pFile != NULL) {
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std::string rFile(pFile);
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std::map<std::string, ZipFile*>::const_iterator it = m_ArchiveMap.find(rFile);
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if(it != m_ArchiveMap.end()) {
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exist = true;
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}
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}
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return exist;
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}
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// ------------------------------------------------------------------------------------------------
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// Returns the separator delimiter.
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char Q3BSPZipArchive::getOsSeparator() const {
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#ifndef _WIN32
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return '/';
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#else
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return '\\';
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#endif
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}
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// ------------------------------------------------------------------------------------------------
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// Opens a file, which is part of the archive.
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IOStream *Q3BSPZipArchive::Open(const char* pFile, const char* /*pMode*/) {
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ai_assert(pFile != NULL);
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IOStream* result = NULL;
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std::map<std::string, ZipFile*>::iterator it = m_ArchiveMap.find(pFile);
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if(it != m_ArchiveMap.end()) {
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result = (IOStream*) it->second;
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}
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return result;
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}
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// ------------------------------------------------------------------------------------------------
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// Close a filestream.
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void Q3BSPZipArchive::Close(IOStream *pFile) {
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ai_assert(pFile != NULL);
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// We don't do anything in case the file would be opened again in the future
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}
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// ------------------------------------------------------------------------------------------------
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// Returns the file-list of the archive.
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void Q3BSPZipArchive::getFileList(std::vector<std::string> &rFileList) {
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rFileList.clear();
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for(std::map<std::string, ZipFile*>::iterator it(m_ArchiveMap.begin()), end(m_ArchiveMap.end()); it != end; ++it) {
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rFileList.push_back(it->first);
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}
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}
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// ------------------------------------------------------------------------------------------------
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// Maps the archive content.
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bool Q3BSPZipArchive::mapArchive() {
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bool success = false;
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if(m_ZipFileHandle != NULL) {
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if(m_ArchiveMap.empty()) {
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// At first ensure file is already open
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if(unzGoToFirstFile(m_ZipFileHandle) == UNZ_OK) {
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// Loop over all files
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do {
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char filename[FileNameSize];
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unz_file_info fileInfo;
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if(unzGetCurrentFileInfo(m_ZipFileHandle, &fileInfo, filename, FileNameSize, NULL, 0, NULL, 0) == UNZ_OK) {
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// The file has EXACTLY the size of uncompressed_size. In C
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// you need to mark the last character with '\0', so add
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// another character
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if(unzOpenCurrentFile(m_ZipFileHandle) == UNZ_OK) {
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std::pair<std::map<std::string, ZipFile*>::iterator, bool> result = m_ArchiveMap.insert(std::make_pair(filename, new ZipFile(fileInfo.uncompressed_size)));
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if(unzReadCurrentFile(m_ZipFileHandle, result.first->second->m_Buffer, fileInfo.uncompressed_size) == (long int) fileInfo.uncompressed_size) {
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if(unzCloseCurrentFile(m_ZipFileHandle) == UNZ_OK) {
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// Nothing to do anymore...
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}
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}
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}
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}
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} while(unzGoToNextFile(m_ZipFileHandle) != UNZ_END_OF_LIST_OF_FILE);
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}
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}
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success = true;
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}
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return success;
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}
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// ------------------------------------------------------------------------------------------------
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} // Namespace Q3BSP
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} // Namespace Assimp
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#endif // ASSIMP_BUILD_NO_Q3BSP_IMPORTER
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