Lua

Set a MIME Body from Transfer-Encoded Text

Demonstrates the Chilkat Mime.SetBodyFromEncoded method, which sets the body from already transfer-encoded text. The first argument is the encoding (base64 or quoted-printable) and the second is the encoded text.

Background: Sometimes you already hold content in its encoded form — a Base64 string from a database or another API — and re-decoding just to have Chilkat re-encode it is wasteful. This method stores the encoded text as-is and records the matching transfer encoding, so the body is correct without a needless round trip. Only the standard reversible encodings, Base64 and quoted-printable, are accepted.

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Lua

local chilkat = require("chilkat")

-- Demonstrates the Mime.SetBodyFromEncoded method, which sets the body from already transfer-
-- encoded text.  The 1st argument is the encoding ("base64" or "quoted-printable") and the 2nd is
-- the encoded text.

local mime = chilkat.Mime.new()

mime.content_type = "text/plain"

-- The body is provided already Base64-encoded; Chilkat stores it without re-encoding.
local base64Body = "SGVsbG8sIHRoaXMgaXMgdGhlIGJvZHku"
local success = mime:set_body_from_encoded("base64", base64Body)
if not success then
    print(mime.last_error_text)
    return
end

-- The decoded body is the original text.
local decoded = mime:get_body_decoded()
if not mime.last_method_success then
    print(mime.last_error_text)
    return
end

print(decoded)