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Support Promise[Blob]. #318

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merged 1 commit into from
Jul 27, 2016
Merged

Support Promise[Blob]. #318

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35 changes: 18 additions & 17 deletions lib/utils.js
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Original file line number Diff line number Diff line change
Expand Up @@ -418,23 +418,24 @@ exports.extend = function() {
*/
exports.prepareContent = function(name, inputData, isBinary, isOptimizedBinaryString, isBase64) {

var promise = null;
if (support.blob && inputData instanceof Blob && typeof FileReader !== "undefined") {
promise = new external.Promise(function (resolve, reject) {
var reader = new FileReader();

reader. {
resolve(e.target.result);
};
reader. {
reject(e.target.error);
};
reader.readAsArrayBuffer(inputData);
});
} else {
// if data is already a promise, this flatten it.
promise = external.Promise.resolve(inputData);
}
// if inputData is already a promise, this flatten it.
var promise = external.Promise.resolve(inputData).then(function(data) {
if (support.blob && data instanceof Blob && typeof FileReader !== "undefined") {
return new external.Promise(function (resolve, reject) {
var reader = new FileReader();

reader. {
resolve(e.target.result);
};
reader. {
reject(e.target.error);
};
reader.readAsArrayBuffer(data);
});
} else {
return data;
}
});

return promise.then(function(data) {
var dataType = exports.getTypeOf(data);
Expand Down
55 changes: 39 additions & 16 deletions test/asserts/file.js
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,21 @@

QUnit.module("file", function () {

function str2blob (str) {
var u8 = new Uint8Array(str.length);
for(var i = 0; i < str.length; i++) {
u8[i] = str.charCodeAt(i);
}
try {
// don't use an Uint8Array, see the comment on utils.newBlob
return new Blob([u8.buffer], {type:"text/plain"});
} catch (e) {
var Builder = window.BlobBuilder || window.WebKitBlobBuilder || window.MozBlobBuilder || window.MSBlobBuilder;
var builder = new Builder();
builder.append(u8.buffer);
return builder.getBlob("text/plain");
}
}

QUnit.module("add");

Expand Down Expand Up @@ -356,21 +371,6 @@ QUnit.module("file", function () {

if (JSZip.support.blob) {
test("add file: file(name, Blob)", function() {
var str2blob = function (str) {
var array = new Uint8Array(str.length);
for(var i = 0; i < str.length; i++) {
array[i] = str.charCodeAt(i);
}
try {
// don't use an Uint8Array, see the comment on utils.newBlob
return new Blob([array.buffer], {type:"text/plain"});
} catch (e) {
var Builder = window.BlobBuilder || window.WebKitBlobBuilder || window.MozBlobBuilder || window.MSBlobBuilder;
var builder = new Builder();
builder.append(array.buffer);
return builder.getBlob("text/plain");
}
};
var zip = new JSZip();
zip.file("file.txt", str2blob("\xE2\x82\xAC15\n"));
testFileDataGetters({name : "utf8", zip : zip, textData : "€15\n", rawData : "\xE2\x82\xAC15\n"});
Expand Down Expand Up @@ -408,7 +408,7 @@ QUnit.module("file", function () {
});
}

test("add file: file(name, polyfill Promise)", function() {
test("add file: file(name, polyfill Promise[string])", function() {
var str2promise = function (str) {
return new JSZip.external.Promise(function(resolve, reject) {
setTimeout(function () {
Expand All @@ -429,6 +429,29 @@ QUnit.module("file", function () {
testFileDataGetters({name : "empty content", zip : zip, textData : ""});
});

if (JSZip.support.blob) {
test("add file: file(name, polyfill Promise[Blob])", function() {
var str2promiseOfBlob = function (str) {
return new JSZip.external.Promise(function(resolve, reject) {
setTimeout(function () {
resolve(str2blob(str));
}, 10);
});
};
var zip = new JSZip();
zip.file("file.txt", str2promiseOfBlob("\xE2\x82\xAC15\n"));
testFileDataGetters({name : "utf8", zip : zip, textData : "€15\n", rawData : "\xE2\x82\xAC15\n"});

zip = new JSZip();
zip.file("file.txt", str2promiseOfBlob("test\r\ntest\r\n"));
testFileDataGetters({name : "\\r\\n", zip : zip, textData : "test\r\ntest\r\n"});

zip = new JSZip();
zip.file("file.txt", str2promiseOfBlob(""));
testFileDataGetters({name : "empty content", zip : zip, textData : ""});
});
}

if (JSZip.support.nodebuffer) {
test("add file: file(name, Buffer)", function() {
var str2buffer = function (str) {
Expand Down