mirror of
https://github.com/AquariaOSE/Aquaria.git
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123 lines
2.4 KiB
C++
123 lines
2.4 KiB
C++
#include "VFSInternal.h"
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#include "VFSZipArchiveRef.h"
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#include <stdio.h>
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#include "miniz.h"
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VFS_NAMESPACE_START
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static size_t zip_read_func(void *pOpaque, mz_uint64 file_ofs, void *pBuf, size_t n)
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{
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File *vf = (File*)pOpaque;
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mz_int64 cur_ofs = vf->getpos();
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if((mz_int64)file_ofs < 0)
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return 0;
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if(cur_ofs != (mz_int64)file_ofs && !vf->seek((vfspos)file_ofs, SEEK_SET))
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return 0;
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return vf->read(pBuf, n);
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}
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static bool zip_reader_init_vfsfile(mz_zip_archive *pZip, File *vf, mz_uint32 flags)
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{
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mz_uint64 file_size = vf->size();
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if(!file_size || !vf->open("rb"))
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{
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vf->close();
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return false;
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}
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pZip->m_pRead = zip_read_func;
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pZip->m_pIO_opaque = vf;
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if (!mz_zip_reader_init(pZip, file_size, flags))
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{
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vf->close();
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return false;
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}
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return true;
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}
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static bool zip_reader_reopen_vfsfile(mz_zip_archive *pZip, mz_uint32 flags)
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{
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if(!(pZip && pZip->m_pIO_opaque && pZip->m_pRead))
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return false;
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File *vf = (File*)pZip->m_pIO_opaque;
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mz_uint64 file_size = vf->size();
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if(!file_size)
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{
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vf->close();
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return false;
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}
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if(!vf->isopen())
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if(!vf->open("rb"))
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return false;
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if(pZip->m_zip_mode == MZ_ZIP_MODE_READING)
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return true;
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if (!mz_zip_reader_init(pZip, file_size, flags))
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{
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vf->close();
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return false;
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}
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return true;
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}
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ZipArchiveRef::ZipArchiveRef(File *file)
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: archiveFile(file)
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{
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mz = new mz_zip_archive;
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memset(mz, 0, sizeof(mz_zip_archive));
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}
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#define MZ ((mz_zip_archive*)mz)
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ZipArchiveRef::~ZipArchiveRef()
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{
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close();
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delete MZ;
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}
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bool ZipArchiveRef::init()
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{
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return zip_reader_init_vfsfile(MZ, archiveFile, 0);
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}
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bool ZipArchiveRef::openRead()
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{
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return zip_reader_reopen_vfsfile(MZ, 0);
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}
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void ZipArchiveRef::close()
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{
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switch(MZ->m_zip_mode)
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{
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case MZ_ZIP_MODE_READING:
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mz_zip_reader_end(MZ);
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break;
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case MZ_ZIP_MODE_WRITING:
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mz_zip_writer_finalize_archive(MZ);
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mz_zip_writer_end(MZ);
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break;
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case MZ_ZIP_MODE_WRITING_HAS_BEEN_FINALIZED:
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mz_zip_writer_end(MZ);
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break;
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case MZ_ZIP_MODE_INVALID:
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break; // nothing to do
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}
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archiveFile->close();
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}
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const char *ZipArchiveRef::fullname() const
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{
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return archiveFile->fullname();
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}
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VFS_NAMESPACE_END
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