[Mono-dev] Understanding ZipSharp and Native(Un)Zip - any MonoPosixHelper gurus?

2014-10-30 Thread Maury Markowitz 
I'm hoping someone familiar with MonoPosixHelper and/or WindowsBase will see 
this.

I am attempting to port System.IO.Package to iOS. I have made some progress, to 
the point where my somewhat stripped-down WindowsBase is compiling under 
Xamarin on the Mac, and I can run the Packaging functions to the point of 
decompressing the file.

Following through the code, this appears to ultimately fail on this:

   [DllImport ("MonoPosixHelper", 
CallingConvention=CallingConvention.Cdecl)]
   static extern int unzOpenCurrentFile2 (UnzipHandle handle,
  out int method,
  out int level,
  int raw);

Looking over MonoPosixHelper, it *appears* this consists largely of Zlib. Zlib 
is already installed on Mac/iOS in /usr/lib. So, in theory, P/Invoke should 
work given a few tweaks to the DllImport.

However, I cannot find any function called "unzOpenCurrentFile2" in 
MonoPosixHelper. I found some sort of mapping in WindowBase's IOFunctions.cs, 
but I'm not sure I understand it's purpose, nor if it is in any way related to 
this.

I can't shake the feeling that simply changing that DllImport is all I need, 
but I am too confused by the naming to be sure. Any pointers would be greatly 
appreciated!

p.s. My apologies if this double-posts, I got some sort of bounce message.

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Re: [Mono-dev] Understanding ZipSharp and Native(Un)Zip - any MonoPosixHelper gurus?

2014-10-30 Thread Alexander Köplinger 
I'm not really familiar with MonoPosixHelper, but it looks like on mobile it 
uses the "__Internal" P/Invoke:
 
https://github.com/mono/mono/blob/f39bebefeaa15cdde051d428f6bdc7e3e80b2c10/mcs/class/System/System.IO.Compression/DeflateStream.cs#L480-L484
 
Maybe that helps.
-- Alex
 
> From: maury.markow...@gmail.com
> Date: Thu, 30 Oct 2014 10:05:50 -0400
> To: mono-devel-list@lists.ximian.com
> Subject: [Mono-dev] Understanding ZipSharp and Native(Un)Zip - any    
> MonoPosixHelper gurus?
> 
> I'm hoping someone familiar with MonoPosixHelper and/or WindowsBase will see 
> this.
> 
> I am attempting to port System.IO.Package to iOS. I have made some progress, 
> to the point where my somewhat stripped-down WindowsBase is compiling under 
> Xamarin on the Mac, and I can run the Packaging functions to the point of 
> decompressing the file.
> 
> Following through the code, this appears to ultimately fail on this:
> 
>[DllImport ("MonoPosixHelper", 
> CallingConvention=CallingConvention.Cdecl)]
>static extern int unzOpenCurrentFile2 (UnzipHandle handle,
>   out int method,
>   out int level,
>   int raw);
> 
> Looking over MonoPosixHelper, it *appears* this consists largely of Zlib. 
> Zlib is already installed on Mac/iOS in /usr/lib. So, in theory, P/Invoke 
> should work given a few tweaks to the DllImport.
> 
> However, I cannot find any function called "unzOpenCurrentFile2" in 
> MonoPosixHelper. I found some sort of mapping in WindowBase's IOFunctions.cs, 
> but I'm not sure I understand it's purpose, nor if it is in any way related 
> to this.
> 
> I can't shake the feeling that simply changing that DllImport is all I need, 
> but I am too confused by the naming to be sure. Any pointers would be greatly 
> appreciated!
> 
> p.s. My apologies if this double-posts, I got some sort of bounce message.
> 
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Re: [Mono-dev] Understanding ZipSharp and Native(Un)Zip - any MonoPosixHelper gurus?

2014-10-30 Thread Maury Markowitz 
> On Oct 30, 2014, at 10:18 AM, Alexander Köplinger 
>  wrote:
> 
> I'm not really familiar with MonoPosixHelper, but it looks like on mobile it 
> uses the "__Internal" P/Invoke:
>  
> https://github.com/mono/mono/blob/f39bebefeaa15cdde051d428f6bdc7e3e80b2c10/mcs/class/System/System.IO.Compression/DeflateStream.cs#L480-L484
>  
> Maybe that helps.

It may indeed. I only had the Win version so I did not see this code, so I'll 
go get the MONOTOUCH code and compare.
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