Lua Requires Chilkat v10.0.0+

Zip Files in a Date Range

See more Zip Examples

Demonstrates how to use the Zip.MinDate and Zip.MaxDate properties to zip only those files with a last-modified date within a date range. Lua

local chilkat = require("chilkat")

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

local zip = chilkat.Zip.new()

local zipPath = "c:/temp/qa_output/out.zip"

-- Initialize the zip object with the path of the .zip to be created.
zip:new_zip(zipPath)

-- The MinDate and MaxDate properties use the timestamp date/time string format.
-- Here are some examples:
-- YYYY-MM-DD (e.g., 2024-07-31)
-- YYYY-MM-DDTHH:MM:SS�HH:MM (e.g., 2024-07-31T12:34:56+02:00)
-- 2024-07-31T12:34:56Z (the "Z" denotes Zulu time, or UTC)

-- Only append files having a last-modified date greater than 1-Jan-2017
zip.min_date = "2017-01-01T00:00:00Z"

-- Also, only append files having a last-modified date less than the end of 2020
zip.max_date = "2020-12-31T23:59:59Z"

-- You don't need to specify both MinDate and MaxDate.
-- You can specify only one or the other if needed.

-- The MinDate/MaxDate properties apply to all of the Chilkat methods for appending files.

-- Recursively append to the zip object the paths of the files and directories in a directory tree.
-- At this point we are not creating the .zip, nor are we reading the contents of the files.
-- We are simply appending references to the files and directories in the local filesystem
-- that will get processed when WriteZip is called.
local recurse = true
local success = zip:append_files("c:/temp/files_to_zip", recurse)
if not success then
    print(zip.last_error_text)
    return
end

zip.file_name = zipPath
success = zip:write_zip()
if not success then
    print(zip.last_error_text)
    return
end

zip:close_zip()

print("Success")