Re: what is the advantage to use the vimball to get plugins?

On Mar 6, 6:32 am, Tom Link <micat...@gmail.com> wrote:
> >         Item     Tool/Suite   Free   Website
> >         ----     ----------   ----   -------
> >         Winzip      tool       n    http://www.winzip.com/downwz.htm
>
> Built-in support for zlib would be better of course. Anyway, I'd
> suggest to restrict the above list to OSS.
>

Since Vim supports Python on multiple platforms, it could be used
to add support for multiple archive types. The functions below can
pack/unpack gz, bz2 and zip (files can only be added "incrementally").
The code is just a proof of concept and may be the starting point
for a real vim-packer.

Marko

# file: vimpack.py
import os, sys
import shutil
import optparse
from string import Template
import zlib, gzip, bz2, zipfile

def copyfile(fin, fout, chunksize=4096):
while True:
buf = fin.read(chunksize)
fout.write(buf)
if len(buf) < chunksize: break

def gzip_compress(fname, fnameOut, level=6):
fin = open(fname, 'rb')
fout = gzip.GzipFile(fnameOut, 'wb', level)
copyfile(fin, fout)
fin.close()
fout.close()

def gzip_expand(fname, fnameOut):
fin = gzip.GzipFile(fname, 'rb')
fout = open(fnameOut, 'wb')
copyfile(fin, fout)
fin.close()
fout.close()

def bzip2_compress(fname, fnameOut, level=9):
fin = open(fname, 'rb')
fout = bz2.BZ2File(fnameOut, 'w', compresslevel=level)
copyfile(fin, fout)
fin.close()
fout.close()

def bzip2_expand(fname, fnameOut):
fin = bz2.BZ2File(fname, 'r')
fout = open(fnameOut, 'wb')
copyfile(fin, fout)
fin.close()
fout.close()

# TODO: Find latest versioned file
def zip_expand(archive, fnameArchive, fnameFs, level=9):
arch = zipfile.ZipFile(archive, 'r')
fin = arch.open(fnameArchive, 'r')
fout = open(fnameFs, 'wb')
copyfile(fin, fout)
fin.close()
fout.close()
arch.close()

# If a file fnameArchive is already in zip, a suffix ;N will be added
# Otherwise we'd have to rewrite the whole zip file.
def zip_compress(archive, fnameFs, fnameArchive, level=9):
arch = zipfile.ZipFile(archive, 'a', zipfile.ZIP_DEFLATED)
namelist = arch.namelist()
if fnameArchive in namelist:
n=1
while "%s;%d" % (fnameArchive, n) in namelist: n+=1
fnameArchive = "%s;%d" % (fnameArchive, n)
arch.write(fnameFs, fnameArchive)
arch.close()

# TODO: Copy to a new zip keeping only latest versioned files
def zip_pack(archive):
arch = zipfile.ZipFile(archive, 'r')
namelist = arch.namelist()
for name in namelist:
if name.find(";") >= 0: print name
arch.close()

def test():
gzip_expand("example/example1c.txt.gz", "xdata/example1c.txt")
gzip_compress("example/example1.txt", "xdata/example1.txt.gz")
gzip_expand("xdata/example1.txt.gz", "xdata/example1.txt")

bzip2_expand("example/example2c.txt.bz2", "xdata/example2c.txt")
bzip2_compress("example/example2.txt", "xdata/example2.txt.bz2")
bzip2_expand("xdata/example2.txt.bz2", "xdata/example2.txt")

# example3c.zip contains exampleX.txt (X=1..3)
zip_expand("example/example3c.zip", "example3.txt", "xdata/
example3c.txt")
zip_compress("xdata/example3.zip", "example/example3.txt",
"example3.txt")
zip_expand("xdata/example3.zip", "example3.txt", "xdata/
example3.txt")
zip_pack("xdata/example3.zip")

if __name__ == "__main__": test()

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