Lua

URL-Encode a MIME Body

Demonstrates the Chilkat Mime.UrlEncodeBody method, which replaces the current body with an application/x-www-form-urlencoded-style representation using the named charset. The only argument is the charset; it is a void method.

Background: This transforms the body into the form-encoding used by HTML form submissions — spaces to +, reserved characters to percent-escapes — interpreting the text through the given charset first so non-ASCII characters encode correctly. It is a niche operation for constructing form-style payloads within a MIME part.

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Lua

local chilkat = require("chilkat")

-- Demonstrates the Mime.UrlEncodeBody method, which replaces the current body with an
-- application/x-www-form-urlencoded representation using the named charset.  The only argument is
-- the charset.  It is a void method.

local mime = chilkat.Mime.new()

local success = mime:set_body_from_plain_text("name=John Doe & city=New York")
if not success then
    print(mime.last_error_text)
    return
end

-- URL-encode the body: spaces become "+", reserved characters become %-escapes.
mime:url_encode_body("utf-8")

local encodedBody = mime:get_body_decoded()
if not mime.last_method_success then
    print(mime.last_error_text)
    return
end

print(encodedBody)