(Ruby) Find a ZIP Entry by Exact Path Using EntryOf

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This example demonstrates how to use the EntryOf method to find a ZIP entry whose stored path exactly matches a specified path.

Unlike EntryMatching, which performs wildcard matching, EntryOf performs an exact path lookup.

This method is useful when:

• The exact ZIP path is already known
• Retrieving a specific file or directory entry
• Verifying whether a particular entry exists in the ZIP archive

Suppose the ZIP archive contains:

docs/
docs/readme.txt
docs/manual.pdf
images/logo.png
data/config/settings.json

ZIP archives may optionally contain explicit directory entries such as docs/. These directory entries can also be retrieved using EntryOf.

The example:

• Finds an exact file entry
• Finds an exact directory entry
• Demonstrates the difference between file and directory entries

Note: This example requires Chilkat v11.0.0 or greater.

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

require 'chilkat'

success = false

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

success = false

# Open an existing ZIP archive.
zip = Chilkat::CkZip.new()

success = zip.OpenZip("example.zip")
if (success == false)
    print zip.lastErrorText() + "\n";
    exit
end

entry = Chilkat::CkZipEntry.new()

# ------------------------------------------------------------
# Find a specific file entry by its exact ZIP path.

success = zip.EntryOf("docs/readme.txt",entry)

if (success == true)
    print "Found file entry:" + "\n";
    print "  FileName = " + entry.fileName() + "\n";
    print "  IsDirectory = " + entry.get_IsDirectory().to_s() + "\n";
    print "" + "\n";
end

# ------------------------------------------------------------
# Find a directory entry.
# 
# ZIP archives may optionally contain explicit directory entries.
# In this example, "docs/" is a separate directory entry.

success = zip.EntryOf("docs/",entry)

if (success == true)
    print "Found directory entry:" + "\n";
    print "  FileName = " + entry.fileName() + "\n";
    print "  IsDirectory = " + entry.get_IsDirectory().to_s() + "\n";
    print "" + "\n";
end

# ------------------------------------------------------------
# Attempt to find a non-existent entry.

success = zip.EntryOf("images/missing.png",entry)

if (success == false)
    print "The entry images/missing.png was not found." + "\n";
end

zip.CloseZip()

print "Done." + "\n";