mchapman/zlib
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

zlib 1.2.1.2

Browse Source
This commit is contained in:
Mark Adler
2011-09-09 23:23:45 -07:00
parent f0e76a6634
commit 7a6955760b
63 changed files with 2462 additions and 505 deletions
Download Patch File Download Diff File Expand all files Collapse all files

61
contrib/minizip/unzip.c
View File

@@ -1,7 +1,7 @@
/* unzip.c -- IO for uncompress .zip files using zlib
Version 1.00, September 10th, 2003
Version 1.01c, August 23th, 2004
Copyright (C) 1998-2003 Gilles Vollant
Copyright (C) 1998-2004 Gilles Vollant
Read unzip.h for more info
*/
@@ -88,7 +88,7 @@ woven in by Terry Thorsen 1/2003.
const char unz_copyright[] =
" unzip 1.00 Copyright 1998-2003 Gilles Vollant - http://www.winimage.com/zLibDll";
" unzip 1.01 Copyright 1998-2004 Gilles Vollant - http://www.winimage.com/zLibDll";
/* unz_file_info_interntal contain internal info about a file in zipfile*/
typedef struct unz_file_info_internal_s
@@ -798,7 +798,8 @@ extern int ZEXPORT unzGoToNextFile (file)
s=(unz_s*)file;
if (!s->current_file_ok)
return UNZ_END_OF_LIST_OF_FILE;
if (s->num_file+1==s->gi.number_entry)
if (s->gi.number_entry != 0xffff) /* 2^16 files overflow hack */
if (s->num_file+1==s->gi.number_entry)
return UNZ_END_OF_LIST_OF_FILE;
s->pos_in_central_dir += SIZECENTRALDIRITEM + s->cur_file_info.size_filename +
@@ -1244,9 +1245,15 @@ extern int ZEXPORT unzReadCurrentFile (file, buf, len)
pfile_in_zip_read_info->stream.avail_out = (uInt)len;
if (len>pfile_in_zip_read_info->rest_read_uncompressed)
if ((len>pfile_in_zip_read_info->rest_read_uncompressed) &&
(!(pfile_in_zip_read_info->raw)))
pfile_in_zip_read_info->stream.avail_out =
(uInt)pfile_in_zip_read_info->rest_read_uncompressed;
(uInt)pfile_in_zip_read_info->rest_read_uncompressed;
if ((len>pfile_in_zip_read_info->rest_read_compressed) &&
(pfile_in_zip_read_info->raw))
pfile_in_zip_read_info->stream.avail_out =
(uInt)pfile_in_zip_read_info->rest_read_compressed;
while (pfile_in_zip_read_info->stream.avail_out>0)
{
@@ -1339,6 +1346,9 @@ extern int ZEXPORT unzReadCurrentFile (file, buf, len)
*/
err=inflate(&pfile_in_zip_read_info->stream,flush);
if ((err>=0) && (pfile_in_zip_read_info->stream.msg!=NULL))
err = Z_DATA_ERROR;
uTotalOutAfter = pfile_in_zip_read_info->stream.total_out;
uOutThis = uTotalOutAfter-uTotalOutBefore;
@@ -1461,7 +1471,7 @@ extern int ZEXPORT unzGetLocalExtrafield (file,buf,len)
if (ZREAD(pfile_in_zip_read_info->z_filefunc,
pfile_in_zip_read_info->filestream,
buf,size_to_read)!=size_to_read)
buf,read_now)!=read_now)
return UNZ_ERRNO;
return (int)read_now;
@@ -1544,3 +1554,40 @@ extern int ZEXPORT unzGetGlobalComment (file, szComment, uSizeBuf)
*(szComment+s->gi.size_comment)='\0';
return (int)uReadThis;
}
/* Additions by RX '2004 */
extern uLong ZEXPORT unzGetOffset (file)
unzFile file;
{
unz_s* s;
if (file==NULL)
return UNZ_PARAMERROR;
s=(unz_s*)file;
if (!s->current_file_ok)
return 0;
if (s->gi.number_entry != 0 && s->gi.number_entry != 0xffff)
if (s->num_file==s->gi.number_entry)
return 0;
return s->pos_in_central_dir;
}
extern int ZEXPORT unzSetOffset (file, pos)
unzFile file;
uLong pos;
{
unz_s* s;
int err;
if (file==NULL)
return UNZ_PARAMERROR;
s=(unz_s*)file;
s->pos_in_central_dir = pos;
s->num_file = s->gi.number_entry; /* hack */
err = unzlocal_GetCurrentFileInfoInternal(file,&s->cur_file_info,
&s->cur_file_info_internal,
NULL,0,NULL,0,NULL,0);
s->current_file_ok = (err == UNZ_OK);
return err;
}