Add an API to unpack Zip files directly from and to file descriptors.

third_party/zlib/contrib/minizip/ioapi.h

 /* ioapi.h -- 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
 */
 
 #ifndef _ZLIBIOAPI_H
 #define _ZLIBIOAPI_H
@@ skipping 41 matching lines @@
     seek_file_func      zseek_file;
     close_file_func     zclose_file;
     testerror_file_func zerror_file;
     voidpf              opaque;
 } zlib_filefunc_def;
 
 
 
 void fill_fopen_filefunc OF((zlib_filefunc_def* pzlib_filefunc_def));
 
+// Google
+void fill_fdopen_filefunc OF((zlib_filefunc_def* pzlib_filefunc_def, const int fd));
+
 #define ZREAD(filefunc,filestream,buf,size) ((*((filefunc).zread_file))((filefunc).opaque,filestream,buf,size))
 #define ZWRITE(filefunc,filestream,buf,size) ((*((filefunc).zwrite_file))((filefunc).opaque,filestream,buf,size))
 #define ZTELL(filefunc,filestream) ((*((filefunc).ztell_file))((filefunc).opaque,filestream))
 #define ZSEEK(filefunc,filestream,pos,mode) ((*((filefunc).zseek_file))((filefunc).opaque,filestream,pos,mode))
 #define ZCLOSE(filefunc,filestream) ((*((filefunc).zclose_file))((filefunc).opaque,filestream))
 #define ZERROR(filefunc,filestream) ((*((filefunc).zerror_file))((filefunc).opaque,filestream))
 
 
 #ifdef __cplusplus
 }
 #endif
 
 #endif