Lua Requires Chilkat v10.0.0+

Unzip Files in a Date Range

See more Zip Examples

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

local chilkat = require("chilkat")

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

local zip = chilkat.Zip.new()

local success = zip:open_zip("qa_data/zips/sample.zip")
if not success then
    print(zip.last_error_text)
    return
end

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

-- Also, only unzip 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 unzipping.

local numUnzipped = zip:unzip("c:/temp/unzipDir")
if numUnzipped < 0 then
    print(zip.last_error_text)
    return
end

zip:close_zip()