Enable for ZipFile to specify to create archives of arbitrary windows FAT or Unix filesystem
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Descripción
Feature or enhancement
Proposal:
Hi, as dev working with app designed for both Windows, Mac and Linux systems, I had recently automating with ZipFile task of repacking some internal ZIP archives. To automate the task even more, I created formulas for each of systems to be available on single script, on single call (and so on one machine) to create packages easier.
Unfortunately generated tasks were faulty,
I noticed, that same script performed on Linux or Windows created archives of different types - FAT or UNX, therefore output files were seen as invalid on opposite system.
To make the picture, my flow was:
start on particular OS (either Windows or Linux) ==> download archive from web (fixed format, UNX or FAT) ==> unpacking archive ==> creating new archive from files from previous ==> resulting archive has format from OS, overriding input archive (while I need the exact opposite)
Could I ask You to add possibility from code to enforce archiving files by chosen system , for instance like a compression method (like I chose LZMA), like I suggest below ? Or maybe if it is dependent on the format of the not yet archived input , could a similar flag enforce unpacking file in chosen filesystem , not being dependent on the used machine and OS?
I also provide some output from zipinfo console utility.
I attach some links that hopefully might present the issue,
https://en.wikipedia.org/wiki/FAT_filesystem_and_Linux
https://forensics.wiki/zip/#external-file-attributes
Best regards and have a good day, also feel free to contact me for more info, Wiktor
class zipfile.ZipFile(file, filesystem='FAT/UNX', ...
ZipFile.write(filename, filesystem='FAT/UNX', ...
class zipfile.ZipFile(file, filesystem='FAT/UNX', ...
ZipFile.write(filename, filesystem='FAT/UNX', ...
packed on Windows
zipinfo ~/Downloads/win7.1.5_sandbox.zip
Archive: win7.1.5_sandbox.zip
Zip file size: 47379022 bytes, number of entries: 92
drwx--- 6.3 fat 0 bx stor 25-Mar-12 11:41 Debug/
....
-rwx--- 6.3 fat 20554528 bx lzma 25-Mar-11 16:17 someWinApp.exe
....
-rwx--- 6.3 fat 422168 bx lzma 25-Mar-11 16:18 someWinApp2.exe
92 files, 205285623 bytes uncompressed, 47362726 bytes compressed: 76.9%
packed on Mac
zipinfo ~/Downloads/mac7.1.4_sandbox.zip
Archive: mac7.1.4_sandbox.zip
Zip file size: 93026056 bytes, number of entries: 160
drwxr-xr-x 6.3 unx 0 bx stor 25-Feb-14 01:00 .package/
drwxr-xr-x 6.3 unx 0 bx stor 25-Feb-14 00:59 RuntimeRoots/
-rwxr-xr-x 6.3 unx 25375808 bx lzma 25-Feb-14 01:00 someApp
...
-rwxr-xr-x 6.3 unx 11167424 bx lzma 25-Feb-14 01:00 someApp2
....
-rwxr-xr-x 6.3 unx 2053072 bx someApp3
-rw-r--r-- 6.3 unx 4315 bx lzma 25-Feb-10 09:30 headerfile.h
160 files, 409689641 bytes uncompressed, 92994544 bytes compressed: 77.3%
Has this already been discussed elsewhere?
No response given
Links to previous discussion of this feature:
No response
Guía de contribución
Primeros pasos
- Lee el issue completo y luego la guía de contribución del proyecto.
- Comenta en el issue que vas a ocuparte — evita que dos personas hagan lo mismo.
- Haz un fork del repositorio y trabaja en una rama.
- Abre un pull request que haga referencia al número del issue.
Línea de trabajo
Empieza por los puntos de entrada zipfile.ZipFile y ZipFile.write mencionados en la propuesta y, a continuación, rastrea cómo se asignan los metadatos del sistema de archivos cuando se crean archivos comprimidos en Windows, Mac y Linux. Se considera terminado cuando la API puede imponer los metadatos de archivo FAT o Unix solicitados con independencia del sistema operativo anfitrión, y el comportamiento está cubierto por pruebas relevantes.
Escrito por el modelo de indexación a partir del texto del issue.
Evaluación
- Stack tecnológico
- python
- Área
- operating-systems, tooling
- Tipo de issue
- Nueva funcionalidad
- Dificultad
- 4/5
- Tiempo estimado
- 3-5 días
- Estado de actividad
- Estancado
- Claridad
- Bastante claro
- Aptitud para principiantes
- 35/100