diff options
Diffstat (limited to 'daemon/quazip/qioapi.cpp')
| -rw-r--r-- | daemon/quazip/qioapi.cpp | 361 |
1 files changed, 361 insertions, 0 deletions
diff --git a/daemon/quazip/qioapi.cpp b/daemon/quazip/qioapi.cpp new file mode 100644 index 0000000..534dbdf --- /dev/null +++ b/daemon/quazip/qioapi.cpp @@ -0,0 +1,361 @@ +/* ioapi.c -- IO base function header for compress/uncompress .zip + files using zlib + zip or unzip API + + Version 1.01e, February 12th, 2005 + + Copyright (C) 1998-2005 Gilles Vollant + + Modified by Sergey A. Tachenov to integrate with Qt. +*/ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "zlib.h" +#include "ioapi.h" +#include "quazip_global.h" +#include <QIODevice> +#if (QT_VERSION >= 0x050100) +#define QUAZIP_QSAVEFILE_BUG_WORKAROUND +#endif +#ifdef QUAZIP_QSAVEFILE_BUG_WORKAROUND +#include <QSaveFile> +#endif + +/* I've found an old Unix (a SunOS 4.1.3_U1) without all SEEK_* defined.... */ + +#ifndef SEEK_CUR +#define SEEK_CUR 1 +#endif + +#ifndef SEEK_END +#define SEEK_END 2 +#endif + +#ifndef SEEK_SET +#define SEEK_SET 0 +#endif + +voidpf call_zopen64 (const zlib_filefunc64_32_def* pfilefunc,voidpf file,int mode) +{ + if (pfilefunc->zfile_func64.zopen64_file != NULL) + return (*(pfilefunc->zfile_func64.zopen64_file)) (pfilefunc->zfile_func64.opaque,file,mode); + else + { + return (*(pfilefunc->zopen32_file))(pfilefunc->zfile_func64.opaque,file,mode); + } +} + +int call_zseek64 (const zlib_filefunc64_32_def* pfilefunc,voidpf filestream, ZPOS64_T offset, int origin) +{ + if (pfilefunc->zfile_func64.zseek64_file != NULL) + return (*(pfilefunc->zfile_func64.zseek64_file)) (pfilefunc->zfile_func64.opaque,filestream,offset,origin); + else + { + uLong offsetTruncated = (uLong)offset; + if (offsetTruncated != offset) + return -1; + else + return (*(pfilefunc->zseek32_file))(pfilefunc->zfile_func64.opaque,filestream,offsetTruncated,origin); + } +} + +ZPOS64_T call_ztell64 (const zlib_filefunc64_32_def* pfilefunc,voidpf filestream) +{ + if (pfilefunc->zfile_func64.zseek64_file != NULL) + return (*(pfilefunc->zfile_func64.ztell64_file)) (pfilefunc->zfile_func64.opaque,filestream); + else + { + uLong tell_uLong = (*(pfilefunc->ztell32_file))(pfilefunc->zfile_func64.opaque,filestream); + if ((tell_uLong) == ((uLong)-1)) + return (ZPOS64_T)-1; + else + return tell_uLong; + } +} + +struct QIODevice_descriptor { + // Position only used for writing to sequential devices. + qint64 pos; + inline QIODevice_descriptor(): + pos(0) + {} +}; + +voidpf ZCALLBACK qiodevice_open_file_func ( + voidpf opaque, + voidpf file, + int mode) +{ + QIODevice_descriptor *d = reinterpret_cast<QIODevice_descriptor*>(opaque); + QIODevice *iodevice = reinterpret_cast<QIODevice*>(file); + QIODevice::OpenMode desiredMode; + if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ) + desiredMode = QIODevice::ReadOnly; + else if (mode & ZLIB_FILEFUNC_MODE_EXISTING) + desiredMode = QIODevice::ReadWrite; + else if (mode & ZLIB_FILEFUNC_MODE_CREATE) + desiredMode = QIODevice::WriteOnly; + if (iodevice->isOpen()) { + if ((iodevice->openMode() & desiredMode) == desiredMode) { + if (desiredMode != QIODevice::WriteOnly + && iodevice->isSequential()) { + // We can use sequential devices only for writing. + delete d; + return NULL; + } else { + if ((desiredMode & QIODevice::WriteOnly) != 0) { + // open for writing, need to seek existing device + if (!iodevice->isSequential()) { + iodevice->seek(0); + } else { + d->pos = iodevice->pos(); + } + } + } + return iodevice; + } else { + delete d; + return NULL; + } + } + iodevice->open(desiredMode); + if (iodevice->isOpen()) { + if (desiredMode != QIODevice::WriteOnly && iodevice->isSequential()) { + // We can use sequential devices only for writing. + iodevice->close(); + delete d; + return NULL; + } else { + return iodevice; + } + } else { + delete d; + return NULL; + } +} + + +uLong ZCALLBACK qiodevice_read_file_func ( + voidpf opaque, + voidpf stream, + void* buf, + uLong size) +{ + QIODevice_descriptor *d = reinterpret_cast<QIODevice_descriptor*>(opaque); + QIODevice *iodevice = reinterpret_cast<QIODevice*>(stream); + qint64 ret64 = iodevice->read((char*)buf,size); + uLong ret; + ret = (uLong) ret64; + if (ret64 != -1) { + d->pos += ret64; + } + return ret; +} + + +uLong ZCALLBACK qiodevice_write_file_func ( + voidpf opaque, + voidpf stream, + const void* buf, + uLong size) +{ + QIODevice_descriptor *d = reinterpret_cast<QIODevice_descriptor*>(opaque); + QIODevice *iodevice = reinterpret_cast<QIODevice*>(stream); + uLong ret; + qint64 ret64 = iodevice->write((char*)buf,size); + if (ret64 != -1) { + d->pos += ret64; + } + ret = (uLong) ret64; + return ret; +} + +uLong ZCALLBACK qiodevice_tell_file_func ( + voidpf opaque, + voidpf stream) +{ + QIODevice_descriptor *d = reinterpret_cast<QIODevice_descriptor*>(opaque); + QIODevice *iodevice = reinterpret_cast<QIODevice*>(stream); + uLong ret; + qint64 ret64; + if (iodevice->isSequential()) { + ret64 = d->pos; + } else { + ret64 = iodevice->pos(); + } + ret = static_cast<uLong>(ret64); + return ret; +} + +ZPOS64_T ZCALLBACK qiodevice64_tell_file_func ( + voidpf opaque, + voidpf stream) +{ + QIODevice_descriptor *d = reinterpret_cast<QIODevice_descriptor*>(opaque); + QIODevice *iodevice = reinterpret_cast<QIODevice*>(stream); + qint64 ret; + if (iodevice->isSequential()) { + ret = d->pos; + } else { + ret = iodevice->pos(); + } + return static_cast<ZPOS64_T>(ret); +} + +int ZCALLBACK qiodevice_seek_file_func ( + voidpf /*opaque UNUSED*/, + voidpf stream, + uLong offset, + int origin) +{ + QIODevice *iodevice = reinterpret_cast<QIODevice*>(stream); + if (iodevice->isSequential()) { + if (origin == ZLIB_FILEFUNC_SEEK_END + && offset == 0) { + // sequential devices are always at end (needed in mdAppend) + return 0; + } else { + qWarning("qiodevice_seek_file_func() called for sequential device"); + return -1; + } + } + uLong qiodevice_seek_result=0; + int ret; + switch (origin) + { + case ZLIB_FILEFUNC_SEEK_CUR : + qiodevice_seek_result = ((QIODevice*)stream)->pos() + offset; + break; + case ZLIB_FILEFUNC_SEEK_END : + qiodevice_seek_result = ((QIODevice*)stream)->size() - offset; + break; + case ZLIB_FILEFUNC_SEEK_SET : + qiodevice_seek_result = offset; + break; + default: + return -1; + } + ret = !iodevice->seek(qiodevice_seek_result); + return ret; +} + +int ZCALLBACK qiodevice64_seek_file_func ( + voidpf /*opaque UNUSED*/, + voidpf stream, + ZPOS64_T offset, + int origin) +{ + QIODevice *iodevice = reinterpret_cast<QIODevice*>(stream); + if (iodevice->isSequential()) { + if (origin == ZLIB_FILEFUNC_SEEK_END + && offset == 0) { + // sequential devices are always at end (needed in mdAppend) + return 0; + } else { + qWarning("qiodevice_seek_file_func() called for sequential device"); + return -1; + } + } + qint64 qiodevice_seek_result=0; + int ret; + switch (origin) + { + case ZLIB_FILEFUNC_SEEK_CUR : + qiodevice_seek_result = ((QIODevice*)stream)->pos() + offset; + break; + case ZLIB_FILEFUNC_SEEK_END : + qiodevice_seek_result = ((QIODevice*)stream)->size() - offset; + break; + case ZLIB_FILEFUNC_SEEK_SET : + qiodevice_seek_result = offset; + break; + default: + return -1; + } + ret = !iodevice->seek(qiodevice_seek_result); + return ret; +} + +int ZCALLBACK qiodevice_close_file_func ( + voidpf opaque, + voidpf stream) +{ + QIODevice_descriptor *d = reinterpret_cast<QIODevice_descriptor*>(opaque); + delete d; + QIODevice *device = reinterpret_cast<QIODevice*>(stream); +#ifdef QUAZIP_QSAVEFILE_BUG_WORKAROUND + // QSaveFile terribly breaks the is-a idiom: + // it IS a QIODevice, but it is NOT compatible with it: close() is private + QSaveFile *file = qobject_cast<QSaveFile*>(device); + if (file != NULL) { + // We have to call the ugly commit() instead: + return file->commit() ? 0 : -1; + } +#endif + device->close(); + return 0; +} + +int ZCALLBACK qiodevice_fakeclose_file_func ( + voidpf opaque, + voidpf /*stream*/) +{ + QIODevice_descriptor *d = reinterpret_cast<QIODevice_descriptor*>(opaque); + delete d; + return 0; +} + +int ZCALLBACK qiodevice_error_file_func ( + voidpf /*opaque UNUSED*/, + voidpf /*stream UNUSED*/) +{ + // can't check for error due to the QIODevice API limitation + return 0; +} + +void fill_qiodevice_filefunc ( + zlib_filefunc_def* pzlib_filefunc_def) +{ + pzlib_filefunc_def->zopen_file = qiodevice_open_file_func; + pzlib_filefunc_def->zread_file = qiodevice_read_file_func; + pzlib_filefunc_def->zwrite_file = qiodevice_write_file_func; + pzlib_filefunc_def->ztell_file = qiodevice_tell_file_func; + pzlib_filefunc_def->zseek_file = qiodevice_seek_file_func; + pzlib_filefunc_def->zclose_file = qiodevice_close_file_func; + pzlib_filefunc_def->zerror_file = qiodevice_error_file_func; + pzlib_filefunc_def->opaque = new QIODevice_descriptor; +} + +void fill_qiodevice64_filefunc ( + zlib_filefunc64_def* pzlib_filefunc_def) +{ + // Open functions are the same for Qt. + pzlib_filefunc_def->zopen64_file = qiodevice_open_file_func; + pzlib_filefunc_def->zread_file = qiodevice_read_file_func; + pzlib_filefunc_def->zwrite_file = qiodevice_write_file_func; + pzlib_filefunc_def->ztell64_file = qiodevice64_tell_file_func; + pzlib_filefunc_def->zseek64_file = qiodevice64_seek_file_func; + pzlib_filefunc_def->zclose_file = qiodevice_close_file_func; + pzlib_filefunc_def->zerror_file = qiodevice_error_file_func; + pzlib_filefunc_def->opaque = new QIODevice_descriptor; + pzlib_filefunc_def->zfakeclose_file = qiodevice_fakeclose_file_func; +} + +void fill_zlib_filefunc64_32_def_from_filefunc32(zlib_filefunc64_32_def* p_filefunc64_32,const zlib_filefunc_def* p_filefunc32) +{ + p_filefunc64_32->zfile_func64.zopen64_file = NULL; + p_filefunc64_32->zopen32_file = p_filefunc32->zopen_file; + p_filefunc64_32->zfile_func64.zerror_file = p_filefunc32->zerror_file; + p_filefunc64_32->zfile_func64.zread_file = p_filefunc32->zread_file; + p_filefunc64_32->zfile_func64.zwrite_file = p_filefunc32->zwrite_file; + p_filefunc64_32->zfile_func64.ztell64_file = NULL; + p_filefunc64_32->zfile_func64.zseek64_file = NULL; + p_filefunc64_32->zfile_func64.zclose_file = p_filefunc32->zclose_file; + p_filefunc64_32->zfile_func64.zerror_file = p_filefunc32->zerror_file; + p_filefunc64_32->zfile_func64.opaque = p_filefunc32->opaque; + p_filefunc64_32->zfile_func64.zfakeclose_file = NULL; + p_filefunc64_32->zseek32_file = p_filefunc32->zseek_file; + p_filefunc64_32->ztell32_file = p_filefunc32->ztell_file; +} |