(Ruby) Unzip Some Files by Iterating over Entries

Demonstrates how to unzip specific files by iterating over entries in a .zip.

Chilkat Ruby Downloads install from rubygems.org gem install chilkat or download... Ruby Library for Windows, MacOS, Linux, Alpine Linux

require 'chilkat'

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

zip = Chilkat::CkZip.new()

# Open a .zip containing:
# 
# a1.xml
# b1.xml
# c1.xml
# dir1/a2.xml
# dir1/c2.xml
# dir2/dir3/c3.xml

# We wish to unzip only a1.xml, b1.xml, and c1.xml
success = zip.OpenZip("qa_data/zips/xml_files.zip")
if (success != true)
    print zip.lastErrorText() + "\n";
    exit
end

sbFilename = Chilkat::CkStringBuilder.new()

numEntries = zip.get_NumEntries()
i = 0
while i < numEntries
    # entry is a CkZipEntry
    entry = zip.GetEntryByIndex(i)

    entryFilePath = entry.fileName()
    print entryFilePath + "\n";

    if (entry.get_IsDirectory() == false)
        sbFilename.SetString(entryFilePath)
        if (sbFilename.Contains("/",false) == false)
            # Does not contain "/"
            # Unzip to the qa_output directory.
            success = entry.Extract("qa_output")
            if (success == false)
                print "Failed to unzip " + entryFilePath + "\n";
            else
                print "Unzipped " + entryFilePath + "\n";
            end

        end

    end

    i = i + 1
end