diff --git a/html5/js/lib/FileSaver.js b/html5/js/lib/FileSaver.js index 2b915b21..5d204aee 100644 --- a/html5/js/lib/FileSaver.js +++ b/html5/js/lib/FileSaver.js @@ -1,170 +1,171 @@ -"use strict"; - /* - * 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 - */ -// The one and only way of getting global scope in all enviorment +* 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 +*/ + +// The one and only way of getting global scope in all environments // https://stackoverflow.com/q/3277182/1008999 -var _global = function () { - // some use content security policy to disable eval - try { - return Function('return this')() || (42, eval)('this'); - } catch (e) { - // every global should have circular reference - // used for checking if someone writes var window = {}; var self = {} - return typeof window === 'object' && window.window === window ? window : typeof self === 'object' && self.self === self ? self : typeof global === 'object' && global.global === global ? global : this; - } -}(); - -function bom(blob, opts) { - if (typeof opts === 'undefined') opts = { - autoBom: false - };else if (typeof opts !== 'object') { - console.warn('Depricated: Expected third argument to be a object'); - opts = { - autoBom: !opts - }; - } // 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; +var _global = typeof window === 'object' && window.window === window + ? window : typeof self === 'object' && self.self === self + ? self : typeof global === 'object' && global.global === global + ? global + : this + +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 } + } + + // 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 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); - xhr.send(); - return xhr.status >= 200 && xhr.status <= 299; -} // `a.click()` don't work for all browsers (#465) - +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 +} -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); - } +// `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) + } } -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) -: 'download' in HTMLAnchorElement.prototype ? 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 approch -: '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 () { - clikc(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 avalible 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) && typeof FileReader === 'object') { - // 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 - } -}; +// 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; +}