local int unzlocal_GetCurrentFileInfoInternal (
unzFile file,
unz_file_info *pfile_info,
unz_file_info_internal *pfile_info_internal,
char *szFileName,
uLong fileNameBufferSize,
void *extraField,
uLong extraFieldBufferSize,
char *szComment,
uLong commentBufferSize)
{
char buf[46];
unz_s* s;
unz_file_info file_info;
unz_file_info_internal file_info_internal = {0};
int err=UNZ_OK;
uLong uMagic;
long lSeek=0;
if (file==NULL)
return UNZ_PARAMERROR;
s=(unz_s*)file;
if (fseek(s->file,s->pos_in_central_dir+s->byte_before_the_zipfile,SEEK_SET)!=0)
err=UNZ_ERRNO;
// UTTAR: Reducing the number of calls to fread drastically to improve loading performance
if(fread(buf, 46, 1, s->file) != 1)
{
err = UNZ_ERRNO;
memset(&file_info, 0, sizeof(file_info));
}
else
{
uMagic = LITTLE_INT(*((int*)&buf[0]));
file_info.version = LITTLE_SHORT(*((short*)&buf[4]));
file_info.version_needed = LITTLE_SHORT(*((short*)&buf[6]));
file_info.flag = LITTLE_SHORT(*((short*)&buf[8]));
file_info.compression_method = LITTLE_SHORT(*((short*)&buf[10]));
file_info.dosDate = LITTLE_INT(*((int*)&buf[12]));
file_info.crc = LITTLE_INT(*((int*)&buf[16]));
file_info.compressed_size = LITTLE_INT(*((int*)&buf[20]));
file_info.uncompressed_size = LITTLE_INT(*((int*)&buf[24]));
file_info.size_filename = LITTLE_SHORT(*((short*)&buf[28]));
file_info.size_file_extra = LITTLE_SHORT(*((short*)&buf[30]));
file_info.size_file_comment = LITTLE_SHORT(*((short*)&buf[32]));
file_info.disk_num_start = LITTLE_SHORT(*((short*)&buf[34]));
file_info.internal_fa = LITTLE_SHORT(*((short*)&buf[36]));
file_info.external_fa = LITTLE_INT(*((int*)&buf[38]));
file_info_internal.offset_curfile = LITTLE_INT(*((int*)&buf[42]));
if (uMagic!=0x02014b50)
err=UNZ_BADZIPFILE;
unzlocal_DosDateToTmuDate(file_info.dosDate,&file_info.tmu_date);
lSeek+=file_info.size_filename;
}
if ((err==UNZ_OK) && (szFileName!=NULL))
{
uLong uSizeRead ;
if (file_info.size_filename<fileNameBufferSize)
{
*(szFileName+file_info.size_filename)='\0';
uSizeRead = file_info.size_filename;
}
else
uSizeRead = fileNameBufferSize;
if ((file_info.size_filename>0) && (fileNameBufferSize>0))
if (fread(szFileName,(uInt)uSizeRead,1,s->file)!=1)
err=UNZ_ERRNO;
lSeek -= uSizeRead;
}
if ((err==UNZ_OK) && (extraField!=NULL))
{
uLong uSizeRead ;
if (file_info.size_file_extra<extraFieldBufferSize)
uSizeRead = file_info.size_file_extra;
else
uSizeRead = extraFieldBufferSize;
if (lSeek!=0)
{
if (fseek(s->file,lSeek,SEEK_CUR)==0)
lSeek=0;
else
err=UNZ_ERRNO;
}
if ((file_info.size_file_extra>0) && (extraFieldBufferSize>0))
if (fread(extraField,(uInt)uSizeRead,1,s->file)!=1)
err=UNZ_ERRNO;
lSeek += file_info.size_file_extra - uSizeRead;
}
else
lSeek+=file_info.size_file_extra;
if ((err==UNZ_OK) && (szComment!=NULL))
{
uLong uSizeRead ;
if (file_info.size_file_comment<commentBufferSize)
{
*(szComment+file_info.size_file_comment)='\0';
uSizeRead = file_info.size_file_comment;
}
else
uSizeRead = commentBufferSize;
if (lSeek!=0)
{
if (fseek(s->file,lSeek,SEEK_CUR)==0)
lSeek=0;
else
err=UNZ_ERRNO;
}
if ((file_info.size_file_comment>0) && (commentBufferSize>0))
if (fread(szComment,(uInt)uSizeRead,1,s->file)!=1)
err=UNZ_ERRNO;
lSeek+=file_info.size_file_comment - uSizeRead;
}
else
lSeek+=file_info.size_file_comment;
if ((err==UNZ_OK) && (pfile_info!=NULL))
*pfile_info=file_info;
if(err == UNZ_ERRNO)
return err;
if (pfile_info_internal!=NULL)
*pfile_info_internal=file_info_internal;
return err;
}
static int unzlocal_GetCurrentFileInfoInternal(unzFile file,
unz_file_info *pfile_info,
unz_file_info_internal *pfile_info_internal,
char *szFileName, uLong fileNameBufferSize,
void *extraField, uLong extraFieldBufferSize,
char *szComment, uLong commentBufferSize)
{
unz_s* s;
unz_file_info file_info;
unz_file_info_internal file_info_internal;
int err=UNZ_OK;
uLong uMagic;
long lSeek=0;
if (file==NULL)
return UNZ_PARAMERROR;
s=(unz_s*)file;
s->_stream->seek(s->pos_in_central_dir+s->byte_before_the_zipfile, SEEK_SET);
if (s->_stream->err())
err=UNZ_ERRNO;
/* we check the magic */
if (err==UNZ_OK) {
if (unzlocal_getLong(s->_stream,&uMagic) != UNZ_OK)
err=UNZ_ERRNO;
else if (uMagic!=0x02014b50)
err=UNZ_BADZIPFILE;
}
if (unzlocal_getShort(s->_stream,&file_info.version) != UNZ_OK)
err=UNZ_ERRNO;
if (unzlocal_getShort(s->_stream,&file_info.version_needed) != UNZ_OK)
err=UNZ_ERRNO;
if (unzlocal_getShort(s->_stream,&file_info.flag) != UNZ_OK)
err=UNZ_ERRNO;
if (unzlocal_getShort(s->_stream,&file_info.compression_method) != UNZ_OK)
err=UNZ_ERRNO;
if (unzlocal_getLong(s->_stream,&file_info.dosDate) != UNZ_OK)
err=UNZ_ERRNO;
unzlocal_DosDateToTmuDate(file_info.dosDate,&file_info.tmu_date);
if (unzlocal_getLong(s->_stream,&file_info.crc) != UNZ_OK)
err=UNZ_ERRNO;
if (unzlocal_getLong(s->_stream,&file_info.compressed_size) != UNZ_OK)
err=UNZ_ERRNO;
if (unzlocal_getLong(s->_stream,&file_info.uncompressed_size) != UNZ_OK)
err=UNZ_ERRNO;
if (unzlocal_getShort(s->_stream,&file_info.size_filename) != UNZ_OK)
err=UNZ_ERRNO;
if (unzlocal_getShort(s->_stream,&file_info.size_file_extra) != UNZ_OK)
err=UNZ_ERRNO;
if (unzlocal_getShort(s->_stream,&file_info.size_file_comment) != UNZ_OK)
err=UNZ_ERRNO;
if (unzlocal_getShort(s->_stream,&file_info.disk_num_start) != UNZ_OK)
err=UNZ_ERRNO;
if (unzlocal_getShort(s->_stream,&file_info.internal_fa) != UNZ_OK)
err=UNZ_ERRNO;
if (unzlocal_getLong(s->_stream,&file_info.external_fa) != UNZ_OK)
err=UNZ_ERRNO;
if (unzlocal_getLong(s->_stream,&file_info_internal.offset_curfile) != UNZ_OK)
err=UNZ_ERRNO;
lSeek+=file_info.size_filename;
if ((err==UNZ_OK) && (szFileName!=NULL)) {
uLong uSizeRead ;
if (file_info.size_filename<fileNameBufferSize) {
*(szFileName+file_info.size_filename)='\0';
uSizeRead = file_info.size_filename;
} else
uSizeRead = fileNameBufferSize;
if ((file_info.size_filename>0) && (fileNameBufferSize>0))
if (s->_stream->read(szFileName,(uInt)uSizeRead)!=uSizeRead)
err=UNZ_ERRNO;
lSeek -= uSizeRead;
}
if ((err==UNZ_OK) && (extraField!=NULL)) {
uLong uSizeRead ;
if (file_info.size_file_extra<extraFieldBufferSize)
uSizeRead = file_info.size_file_extra;
else
uSizeRead = extraFieldBufferSize;
if (lSeek!=0) {
s->_stream->seek(lSeek, SEEK_CUR);
if (s->_stream->err())
lSeek=0;
else
err=UNZ_ERRNO;
}
if ((file_info.size_file_extra>0) && (extraFieldBufferSize>0))
if (s->_stream->read(extraField,(uInt)uSizeRead)!=uSizeRead)
err=UNZ_ERRNO;
lSeek += file_info.size_file_extra - uSizeRead;
}
else
lSeek+=file_info.size_file_extra;
if ((err==UNZ_OK) && (szComment!=NULL)) {
uLong uSizeRead ;
if (file_info.size_file_comment<commentBufferSize) {
*(szComment+file_info.size_file_comment)='\0';
uSizeRead = file_info.size_file_comment;
} else
uSizeRead = commentBufferSize;
if (lSeek!=0) {
s->_stream->seek(lSeek, SEEK_CUR);
if (s->_stream->err())
lSeek=0;
else
err=UNZ_ERRNO;
}
if ((file_info.size_file_comment>0) && (commentBufferSize>0))
if (s->_stream->read(szComment,(uInt)uSizeRead)!=uSizeRead)
err=UNZ_ERRNO;
lSeek+=file_info.size_file_comment - uSizeRead;
} else
lSeek+=file_info.size_file_comment;
if ((err==UNZ_OK) && (pfile_info!=NULL))
*pfile_info=file_info;
if ((err==UNZ_OK) && (pfile_info_internal!=NULL))
*pfile_info_internal=file_info_internal;
return err;
}
static int unzlocal_GetCurrentFileInfoInternal(unzFile file, unz_file_info *pfile_info, unz_file_info_internal *pfile_info_internal, char *szFileName, DWORD fileNameBufferSize, void *extraField, DWORD extraFieldBufferSize, char *szComment, DWORD commentBufferSize)
{
unz_s *s;
unz_file_info file_info;
unz_file_info_internal file_info_internal;
int err = UNZ_OK;
DWORD uMagic;
long lSeek = 0;
if (file == NULL)
{
return UNZ_PARAMERROR;
}
s = (unz_s*)file;
if (ZSEEK(s->z_filefunc, s->filestream, s->pos_in_central_dir + s->byte_before_the_zipfile, SEEK_SET) != 0)
{
err = UNZ_ERRNO;
}
/* we check the magic */
if (err == UNZ_OK)
{
if (unzlocal_getLong(&s->z_filefunc, s->filestream, &uMagic) != UNZ_OK)
{
err = UNZ_ERRNO;
}
else if (uMagic != 0x02014b50)
{
err = UNZ_BADZIPFILE;
}
}
if (unzlocal_getShort(&s->z_filefunc, s->filestream, &file_info.version) != UNZ_OK)
{
err = UNZ_ERRNO;
}
if (unzlocal_getShort(&s->z_filefunc, s->filestream, &file_info.version_needed) != UNZ_OK)
{
err = UNZ_ERRNO;
}
if (unzlocal_getShort(&s->z_filefunc, s->filestream, &file_info.flag) != UNZ_OK)
{
err = UNZ_ERRNO;
}
if (unzlocal_getShort(&s->z_filefunc, s->filestream, &file_info.compression_method) != UNZ_OK)
{
err = UNZ_ERRNO;
}
if (unzlocal_getLong(&s->z_filefunc, s->filestream, &file_info.dosDate) != UNZ_OK)
{
err = UNZ_ERRNO;
}
unzlocal_DosDateToTmuDate(file_info.dosDate, &file_info.tmu_date);
if (unzlocal_getLong(&s->z_filefunc, s->filestream, &file_info.crc) != UNZ_OK)
{
err = UNZ_ERRNO;
}
if (unzlocal_getLong(&s->z_filefunc, s->filestream, &file_info.compressed_size) != UNZ_OK)
{
err = UNZ_ERRNO;
}
if (unzlocal_getLong(&s->z_filefunc, s->filestream, &file_info.uncompressed_size) != UNZ_OK)
{
err = UNZ_ERRNO;
}
if (unzlocal_getShort(&s->z_filefunc, s->filestream, &file_info.size_filename) != UNZ_OK)
{
err = UNZ_ERRNO;
}
if (unzlocal_getShort(&s->z_filefunc, s->filestream, &file_info.size_file_extra) != UNZ_OK)
{
err = UNZ_ERRNO;
}
if (unzlocal_getShort(&s->z_filefunc, s->filestream, &file_info.size_file_comment) != UNZ_OK)
{
err = UNZ_ERRNO;
}
if (unzlocal_getShort(&s->z_filefunc, s->filestream, &file_info.disk_num_start) != UNZ_OK)
{
err = UNZ_ERRNO;
}
if (unzlocal_getShort(&s->z_filefunc, s->filestream, &file_info.internal_fa) != UNZ_OK)
{
err = UNZ_ERRNO;
}
if (unzlocal_getLong(&s->z_filefunc, s->filestream, &file_info.external_fa) != UNZ_OK)
{
err = UNZ_ERRNO;
}
if (unzlocal_getLong(&s->z_filefunc, s->filestream, &file_info_internal.offset_curfile) != UNZ_OK)
{
err = UNZ_ERRNO;
}
lSeek += file_info.size_filename;
if ((err == UNZ_OK) && (szFileName != NULL))
{
DWORD uSizeRead;
if (file_info.size_filename < fileNameBufferSize)
{
*(szFileName + file_info.size_filename) = '\0';
uSizeRead = file_info.size_filename;
}
else
{
uSizeRead = fileNameBufferSize;
}
if ((file_info.size_filename > 0) && (fileNameBufferSize > 0))
if (ZREAD(s->z_filefunc, s->filestream, szFileName, uSizeRead) != uSizeRead)
{
err = UNZ_ERRNO;
}
lSeek -= uSizeRead;
}
if ((err == UNZ_OK) && (extraField != NULL))
{
DWORD uSizeRead;
if (file_info.size_file_extra < extraFieldBufferSize)
{
uSizeRead = file_info.size_file_extra;
}
else
{
uSizeRead = extraFieldBufferSize;
}
if (lSeek != 0)
{
if (ZSEEK(s->z_filefunc, s->filestream, lSeek, SEEK_CUR) == 0)
{
lSeek = 0;
}
else
{
err = UNZ_ERRNO;
}
}
if ((file_info.size_file_extra > 0) && (extraFieldBufferSize > 0))
{
if (ZREAD(s->z_filefunc, s->filestream, extraField, uSizeRead) != uSizeRead)
{
err = UNZ_ERRNO;
}
}
lSeek += file_info.size_file_extra - uSizeRead;
}
else
{
lSeek += file_info.size_file_extra;
}
if ((err == UNZ_OK) && (szComment != NULL))
{
DWORD uSizeRead;
if (file_info.size_file_comment < commentBufferSize)
{
*(szComment + file_info.size_file_comment) = '\0';
uSizeRead = file_info.size_file_comment;
}
else
{
uSizeRead = commentBufferSize;
}
if (lSeek != 0)
{
if (ZSEEK(s->z_filefunc, s->filestream, lSeek, SEEK_CUR) == 0)
{
lSeek = 0;
}
else
{
err = UNZ_ERRNO;
}
}
if ((file_info.size_file_comment > 0) && (commentBufferSize > 0))
{
if (ZREAD(s->z_filefunc, s->filestream, szComment, uSizeRead) != uSizeRead)
{
err = UNZ_ERRNO;
}
}
lSeek += file_info.size_file_comment - uSizeRead;
}
else
{
lSeek += file_info.size_file_comment;
}
if ((err == UNZ_OK) && (pfile_info != NULL))
{
*pfile_info = file_info;
}
if ((err == UNZ_OK) && (pfile_info_internal != NULL))
{
*pfile_info_internal = file_info_internal;
}
return err;
}
