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/* Any copyright is dedicated to the Public Domain.
* http://creativecommons.org/publicdomain/zero/1.0/ */
"use strict";
const DOC = toDataURL("<div style='background-color: green'>Hello world</div>");
add_task(async function transferModes({ client }) {
const { IO, Page } = client;
await loadURL(DOC);
// as base64 encoded data
const base64 = await Page.printToPDF({ transferMode: "ReturnAsBase64" });
is(base64.stream, null, "No stream handle is returned");
ok(!!base64.data, "Base64 encoded data is returned");
verifyPDF(atob(base64.data).trimEnd());
// defaults to base64 encoded data
const defaults = await Page.printToPDF();
is(defaults.stream, null, "By default no stream handle is returned");
ok(!!defaults.data, "By default base64 encoded data is returned");
verifyPDF(atob(defaults.data).trimEnd());
// unknown transfer modes default to base64
const fallback = await Page.printToPDF({ transferMode: "ReturnAsFoo" });
is(fallback.stream, null, "Unknown mode doesn't return a stream");
ok(!!fallback.data, "Unknown mode defaults to base64 encoded data");
verifyPDF(atob(fallback.data).trimEnd());
// as stream handle
const stream = await Page.printToPDF({ transferMode: "ReturnAsStream" });
ok(!!stream.stream, "Stream handle is returned");
is(stream.data, null, "No base64 encoded data is returned");
let streamData = "";
while (true) {
const { data, base64Encoded, eof } = await IO.read({
handle: stream.stream,
});
streamData += base64Encoded ? atob(data) : data;
if (eof) {
await IO.close({ handle: stream.stream });
break;
}
}
verifyPDF(streamData.trimEnd());
});
function verifyPDF(data) {
is(data.slice(0, 5), "%PDF-", "Decoded data starts with the PDF signature");
is(data.slice(-5), "%%EOF", "Decoded data ends with the EOF flag");
}
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