Any one used minizip or libtar?

[Imskull]

Hello guys,

I am trying to package one folder into a file, I found there was no such library in NACL API nor in naclports(they have a zlib, but I want a package library, eg: minizip), 

then I found minizip port for nacl at https://github.com/eugenis/zlib-nacl/tree/master/contrib/minizip , but I don't know how to integrate it into my project.

Finally, I tried to use libtar from naclports, I got an error when calling tar_append_file: " Function not implemented", after searching its source code, this error looks

raising from a lstat call. ( btw: I am using pepper 33)

Any one know is there a solution to package folder into a file in NACL?

thank you in advanced!

[Matthew Turk]

Hi,

You can use libtar like you're describing, but your tar file can't
include symbolic or hard links. I have run into a similar problem and
I was able to get around it by using --hard-dereference and -h to
dereference both hard and symbolic links.

-Matt

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[Ben Smith]

On Monday, May 5, 2014 12:53:00 AM UTC-7, Imskull wrote:

Hello guys,

I am trying to package one folder into a file, I found there was no such library in NACL API nor in naclports(they have a zlib, but I want a package library, eg: minizip), 

then I found minizip port for nacl at https://github.com/eugenis/zlib-nacl/tree/master/contrib/minizip , but I don't know how to integrate it into my project.

After you build zlib for naclports, they can also be found in your out directory:

naclports/out/build/zlib/zlib-1.2.8/contrib/minizip/

You just need to copy the unzip.*, zip.* and ioapi.* files to your project. They should build without too much trouble, though I did have to modify ioapi.h here:

@@ -21,7 +21,7 @@

 #ifndef _ZLIBIOAPI64_H

 #define _ZLIBIOAPI64_H

 

-#if (!defined(_WIN32)) && (!defined(WIN32)) && (!defined(__APPLE__))

+#if (!defined(_WIN32)) && (!defined(WIN32)) && (!defined(__APPLE__)) && (!defined(__native_client__))

 

   // Linux needs this to support file operation on files larger then 4+GB

   // But might need better if/def to select just the platforms that needs them.

minizip requires zlib, so you'll have to build that first. 

[Imskull]

It's good new some guy has build minizip success, seems not very difficult as you pointed out, I'll try it later, thank you.

[Imskull]

I am sure there is no symbolic link or hard link in my folder, I just created a mp3 in a folder mounted in html5fs under "/persistent", I tried to call lstat("/persistent/myfolder/my.mp3") directly, the error code said " Function not implemented".

if as Ben Smith said minizip could work, it's my first choice, if not I will try libtar again with you suggested options. thanks anyway.

> email to native-client-discuss+unsub...@googlegroups.com.

[Imskull]

It works like a charm, here is additional changes I have made:

- add  "-DNOCRYPT -DIOAPI_NO_64" to your Makefile's CFLAGS

- disable compile  warning as error if you did not set.

On Tuesday, May 6, 2014 12:38:14 AM UTC+8, Ben Smith wrote:

[Thor Tallmon]

Sorry to necro this thread, but...

Out of curiosity, how were you addressing the minigzip file from the chrome app? were you using the whole postMessage thing?

I'm at a loss for how to pipe information to/from it :/