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Add MIME type to the generated .epub file

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Alex Adam 2020-12-24 15:52:14 +02:00
parent 03dd484827
commit 12a4cbb081
4 changed files with 173 additions and 186 deletions
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3
README.md
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@ -66,6 +66,9 @@ in Chrome:
3. Click on Keyboard shortcuts
```
## Added in 1.4.2
- Added MIME type to the generated .epub file
## Added in 1.4.1
- Remove unnecessary permissions
- Detect image type if the URL doesn't have a file extension (jpg, gif, png)

351
web-extension/libs/filesaver.js
View file

@ -1,188 +1,171 @@
/* FileSaver.js
* A saveAs() FileSaver implementation.
* 1.3.2
* 2016-06-16 18:25:19
*
* By Eli Grey, http://eligrey.com
* License: MIT
* See https://github.com/eligrey/FileSaver.js/blob/master/LICENSE.md
*/
/*
* FileSaver.js
* A saveAs() FileSaver implementation.
*
* By Eli Grey, http://eligrey.com
*
* License : https://github.com/eligrey/FileSaver.js/blob/master/LICENSE.md (MIT)
* source : http://purl.eligrey.com/github/FileSaver.js
*/
/*global self */
/*jslint bitwise: true, indent: 4, laxbreak: true, laxcomma: true, smarttabs: true, plusplus: true */
// The one and only way of getting global scope in all environments
// https://stackoverflow.com/q/3277182/1008999
var _global = typeof window === 'object' && window.window === window
? window : typeof self === 'object' && self.self === self
? self : typeof global === 'object' && global.global === global
? global
: this
/*! @source http://purl.eligrey.com/github/FileSaver.js/blob/master/FileSaver.js */
function bom (blob, opts) {
if (typeof opts === 'undefined') opts = { autoBom: false }
else if (typeof opts !== 'object') {
console.warn('Deprecated: Expected third argument to be a object')
opts = { autoBom: !opts }
}
var saveAs = saveAs || (function(view) {
"use strict";
// IE <10 is explicitly unsupported
if (typeof view === "undefined" || typeof navigator !== "undefined" && /MSIE [1-9]\./.test(navigator.userAgent)) {
return;
}
var
doc = view.document
// only get URL when necessary in case Blob.js hasn't overridden it yet
, get_URL = function() {
return view.URL || view.webkitURL || view;
}
, save_link = doc.createElementNS("http://www.w3.org/1999/xhtml", "a")
, can_use_save_link = "download" in save_link
, click = function(node) {
var event = new MouseEvent("click");
node.dispatchEvent(event);
}
, is_safari = /constructor/i.test(view.HTMLElement)
, is_chrome_ios =/CriOS\/[\d]+/.test(navigator.userAgent)
, throw_outside = function(ex) {
(view.setImmediate || view.setTimeout)(function() {
throw ex;
}, 0);
}
, force_saveable_type = "application/octet-stream"
// the Blob API is fundamentally broken as there is no "downloadfinished" event to subscribe to
, arbitrary_revoke_timeout = 1000 * 40 // in ms
, revoke = function(file) {
var revoker = function() {
if (typeof file === "string") { // file is an object URL
get_URL().revokeObjectURL(file);
} else { // file is a File
file.remove();
}
};
setTimeout(revoker, arbitrary_revoke_timeout);
}
, dispatch = function(filesaver, event_types, event) {
event_types = [].concat(event_types);
var i = event_types.length;
while (i--) {
var listener = filesaver["on" + event_types[i]];
if (typeof listener === "function") {
try {
listener.call(filesaver, event || filesaver);
} catch (ex) {
throw_outside(ex);
}
}
}
}
, auto_bom = function(blob) {
// prepend BOM for UTF-8 XML and text/* types (including HTML)
// note: your browser will automatically convert UTF-16 U+FEFF to EF BB BF
if (/^\s*(?:text\/\S*|application\/xml|\S*\/\S*\+xml)\s*;.*charset\s*=\s*utf-8/i.test(blob.type)) {
return new Blob([String.fromCharCode(0xFEFF), blob], {type: blob.type});
}
return blob;
}
, FileSaver = function(blob, name, no_auto_bom) {
if (!no_auto_bom) {
blob = auto_bom(blob);
}
// First try a.download, then web filesystem, then object URLs
var
filesaver = this
, type = blob.type
, force = type === force_saveable_type
, object_url
, dispatch_all = function() {
dispatch(filesaver, "writestart progress write writeend".split(" "));
}
// on any filesys errors revert to saving with object URLs
, fs_error = function() {
if ((is_chrome_ios || (force && is_safari)) && view.FileReader) {
// Safari doesn't allow downloading of blob urls
var reader = new FileReader();
reader.onloadend = function() {
var url = is_chrome_ios ? reader.result : reader.result.replace(/^data:[^;]*;/, 'data:attachment/file;');
var popup = view.open(url, '_blank');
if(!popup) view.location.href = url;
url=undefined; // release reference before dispatching
filesaver.readyState = filesaver.DONE;
dispatch_all();
};
reader.readAsDataURL(blob);
filesaver.readyState = filesaver.INIT;
return;
}
// don't create more object URLs than needed
if (!object_url) {
object_url = get_URL().createObjectURL(blob);
}
if (force) {
view.location.href = object_url;
} else {
var opened = view.open(object_url, "_blank");
if (!opened) {
// Apple does not allow window.open, see https://developer.apple.com/library/safari/documentation/Tools/Conceptual/SafariExtensionGuide/WorkingwithWindowsandTabs/WorkingwithWindowsandTabs.html
view.location.href = object_url;
}
}
filesaver.readyState = filesaver.DONE;
dispatch_all();
revoke(object_url);
}
;
filesaver.readyState = filesaver.INIT;
if (can_use_save_link) {
object_url = get_URL().createObjectURL(blob);
setTimeout(function() {
save_link.href = object_url;
save_link.download = name;
click(save_link);
dispatch_all();
revoke(object_url);
filesaver.readyState = filesaver.DONE;
});
return;
}
fs_error();
}
, FS_proto = FileSaver.prototype
, saveAs = function(blob, name, no_auto_bom) {
return new FileSaver(blob, name || blob.name || "download", no_auto_bom);
}
;
// IE 10+ (native saveAs)
if (typeof navigator !== "undefined" && navigator.msSaveOrOpenBlob) {
return function(blob, name, no_auto_bom) {
name = name || blob.name || "download";
if (!no_auto_bom) {
blob = auto_bom(blob);
}
return navigator.msSaveOrOpenBlob(blob, name);
};
}
FS_proto.abort = function(){};
FS_proto.readyState = FS_proto.INIT = 0;
FS_proto.WRITING = 1;
FS_proto.DONE = 2;
FS_proto.error =
FS_proto.onwritestart =
FS_proto.onprogress =
FS_proto.onwrite =
FS_proto.onabort =
FS_proto.onerror =
FS_proto.onwriteend =
null;
return saveAs;
}(
typeof self !== "undefined" && self
|| typeof window !== "undefined" && window
|| this.content
));
// `self` is undefined in Firefox for Android content script context
// while `this` is nsIContentFrameMessageManager
// with an attribute `content` that corresponds to the window
if (typeof module !== "undefined" && module.exports) {
module.exports.saveAs = saveAs;
} else if ((typeof define !== "undefined" && define !== null) && (define.amd !== null)) {
define([], function() {
return saveAs;
});
// prepend BOM for UTF-8 XML and text/* types (including HTML)
// note: your browser will automatically convert UTF-16 U+FEFF to EF BB BF
if (opts.autoBom && /^\s*(?:text\/\S*|application\/xml|\S*\/\S*\+xml)\s*;.*charset\s*=\s*utf-8/i.test(blob.type)) {
return new Blob([String.fromCharCode(0xFEFF), blob], { type: blob.type })
}
return blob
}
function download (url, name, opts) {
var xhr = new XMLHttpRequest()
xhr.open('GET', url)
xhr.responseType = 'blob'
xhr.onload = function () {
saveAs(xhr.response, name, opts)
}
xhr.onerror = function () {
console.error('could not download file')
}
xhr.send()
}
function corsEnabled (url) {
var xhr = new XMLHttpRequest()
// use sync to avoid popup blocker
xhr.open('HEAD', url, false)
try {
xhr.send()
} catch (e) {}
return xhr.status >= 200 && xhr.status <= 299
}
// `a.click()` doesn't work for all browsers (#465)
function click (node) {
try {
node.dispatchEvent(new MouseEvent('click'))
} catch (e) {
var evt = document.createEvent('MouseEvents')
evt.initMouseEvent('click', true, true, window, 0, 0, 0, 80,
20, false, false, false, false, 0, null)
node.dispatchEvent(evt)
}
}
// Detect WebView inside a native macOS app by ruling out all browsers
// We just need to check for 'Safari' because all other browsers (besides Firefox) include that too
// https://www.whatismybrowser.com/guides/the-latest-user-agent/macos
var isMacOSWebView = _global.navigator && /Macintosh/.test(navigator.userAgent) && /AppleWebKit/.test(navigator.userAgent) && !/Safari/.test(navigator.userAgent)
var saveAs = _global.saveAs || (
// probably in some web worker
(typeof window !== 'object' || window !== _global)
? function saveAs () { /* noop */ }
// Use download attribute first if possible (#193 Lumia mobile) unless this is a macOS WebView
: ('download' in HTMLAnchorElement.prototype && !isMacOSWebView)
? function saveAs (blob, name, opts) {
var URL = _global.URL || _global.webkitURL
var a = document.createElement('a')
name = name || blob.name || 'download'
a.download = name
a.rel = 'noopener' // tabnabbing
// TODO: detect chrome extensions & packaged apps
// a.target = '_blank'
if (typeof blob === 'string') {
// Support regular links
a.href = blob
if (a.origin !== location.origin) {
corsEnabled(a.href)
? download(blob, name, opts)
: click(a, a.target = '_blank')
} else {
click(a)
}
} else {
// Support blobs
a.href = URL.createObjectURL(blob)
setTimeout(function () { URL.revokeObjectURL(a.href) }, 4E4) // 40s
setTimeout(function () { click(a) }, 0)
}
}
// Use msSaveOrOpenBlob as a second approach
: 'msSaveOrOpenBlob' in navigator
? function saveAs (blob, name, opts) {
name = name || blob.name || 'download'
if (typeof blob === 'string') {
if (corsEnabled(blob)) {
download(blob, name, opts)
} else {
var a = document.createElement('a')
a.href = blob
a.target = '_blank'
setTimeout(function () { click(a) })
}
} else {
navigator.msSaveOrOpenBlob(bom(blob, opts), name)
}
}
// Fallback to using FileReader and a popup
: function saveAs (blob, name, opts, popup) {
// Open a popup immediately do go around popup blocker
// Mostly only available on user interaction and the fileReader is async so...
popup = popup || open('', '_blank')
if (popup) {
popup.document.title =
popup.document.body.innerText = 'downloading...'
}
if (typeof blob === 'string') return download(blob, name, opts)
var force = blob.type === 'application/octet-stream'
var isSafari = /constructor/i.test(_global.HTMLElement) || _global.safari
var isChromeIOS = /CriOS\/[\d]+/.test(navigator.userAgent)
if ((isChromeIOS || (force && isSafari) || isMacOSWebView) && typeof FileReader !== 'undefined') {
// Safari doesn't allow downloading of blob URLs
var reader = new FileReader()
reader.onloadend = function () {
var url = reader.result
url = isChromeIOS ? url : url.replace(/^data:[^;]*;/, 'data:attachment/file;')
if (popup) popup.location.href = url
else location = url
popup = null // reverse-tabnabbing #460
}
reader.readAsDataURL(blob)
} else {
var URL = _global.URL || _global.webkitURL
var url = URL.createObjectURL(blob)
if (popup) popup.location = url
else location.href = url
popup = null // reverse-tabnabbing #460
setTimeout(function () { URL.revokeObjectURL(url) }, 4E4) // 40s
}
}
)
_global.saveAs = saveAs.saveAs = saveAs
if (typeof module !== 'undefined') {
module.exports = saveAs;
}

2
web-extension/manifest.json
View file

@ -1,7 +1,7 @@
{
"manifest_version": 2,
"name": "__MSG_extName__",
"version": "1.4.1",
"version": "1.4.2",
"default_locale": "en",
"author": "Alex Adam",
"homepage_url": "https://github.com/alexadam/save-as-ebook",

3
web-extension/saveEbook.js
View file

@ -188,7 +188,8 @@ function _buildEbook(allPages, fromMenu=false) {
zip.generateAsync({
type: "blob"
type: "blob",
mimeType: "application/epub+zip"
})
.then(function(content) {
console.log("done !");