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(Chilkat2-Python) Append Dir Tree to Existing Zip w/out Rewriting Entire Zip

Demonstrates how to use the QuickAppend method to append a directory tree to an existing .zip archive. This method works by editing the existing .zip -- it does not rewrite or recompress the contents of the existing .zip. It is the fastest way to append additional files to a pre-existing large .zip archive. Note: The QuickAppend method is new and available in the pre-release downloads, or in official releases dated after 6-October-2007.

Chilkat2 Python Downloads

Python Module for Windows, Linux, Alpine Linux, MacOS, Solaris

import sys
import chilkat2

# This example requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

zip = chilkat2.Zip()

# The NewZip method only initializes the Zip object -- it does
# not create or write a .zip file.
success = zip.NewZip("notUsed.zip")
if (success != True):
    print(zip.LastErrorText)
    sys.exit()

# Add a references to all files in a directory tree.
# Note: this does not read or compress the file contents --
# it simply adds file references to the zip object.
recurse = True
success = zip.AppendFiles("c:/temp/abc123/*",recurse)
if (success != True):
    print(zip.LastErrorText)
    sys.exit()

# Appends the contents of the zip object to the preExisting.zip
# zip archive.  preExisting.zip is opened, and the files
# referenced by this zip object are streamed in, compressed,
# and appended to the end of the archive.
success = zip.QuickAppend("preExisting.zip")
if (success != True):
    print(zip.LastErrorText)
    sys.exit()

print("Success!")

# Note: Additional files, directory trees, or in-memory data
# can be appended by calling AppendOneFileOrDir, AppendFiles,
# AppendString, AppendData, etc. multiple times.
# Whatever files and/or in-memory data that are referenced by
# this zip object will be appended to preExisting.zip when
# QuickAppend is called

 

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