|
| 1 | +(function (global, factory) { |
| 2 | + if (typeof define === "function" && define.amd) { |
| 3 | + define([], factory); |
| 4 | + } else if (typeof exports !== "undefined") { |
| 5 | + factory(); |
| 6 | + } else { |
| 7 | + var mod = { |
| 8 | + exports: {} |
| 9 | + }; |
| 10 | + factory(); |
| 11 | + global.FileSaver = mod.exports; |
| 12 | + } |
| 13 | +})(this, function () { |
| 14 | + "use strict"; |
| 15 | + |
| 16 | + /* |
| 17 | + * FileSaver.js |
| 18 | + * A saveAs() FileSaver implementation. |
| 19 | + * |
| 20 | + * By Eli Grey, http://eligrey.com |
| 21 | + * |
| 22 | + * License : https://github.com/eligrey/FileSaver.js/blob/master/LICENSE.md (MIT) |
| 23 | + * source : http://purl.eligrey.com/github/FileSaver.js |
| 24 | + */ |
| 25 | + // The one and only way of getting global scope in all environments |
| 26 | + // https://stackoverflow.com/q/3277182/1008999 |
| 27 | + var _global = typeof window === 'object' && window.window === window ? window : typeof self === 'object' && self.self === self ? self : typeof global === 'object' && global.global === global ? global : void 0; |
| 28 | + |
| 29 | + function bom(blob, opts) { |
| 30 | + if (typeof opts === 'undefined') opts = { |
| 31 | + autoBom: false |
| 32 | + };else if (typeof opts !== 'object') { |
| 33 | + console.warn('Deprecated: Expected third argument to be a object'); |
| 34 | + opts = { |
| 35 | + autoBom: !opts |
| 36 | + }; |
| 37 | + } // prepend BOM for UTF-8 XML and text/* types (including HTML) |
| 38 | + // note: your browser will automatically convert UTF-16 U+FEFF to EF BB BF |
| 39 | + |
| 40 | + if (opts.autoBom && /^\s*(?:text\/\S*|application\/xml|\S*\/\S*\+xml)\s*;.*charset\s*=\s*utf-8/i.test(blob.type)) { |
| 41 | + return new Blob([String.fromCharCode(0xFEFF), blob], { |
| 42 | + type: blob.type |
| 43 | + }); |
| 44 | + } |
| 45 | + |
| 46 | + return blob; |
| 47 | + } |
| 48 | + |
| 49 | + function download(url, name, opts) { |
| 50 | + var xhr = new XMLHttpRequest(); |
| 51 | + xhr.open('GET', url); |
| 52 | + xhr.responseType = 'blob'; |
| 53 | + |
| 54 | + xhr.onload = function () { |
| 55 | + saveAs(xhr.response, name, opts); |
| 56 | + }; |
| 57 | + |
| 58 | + xhr.onerror = function () { |
| 59 | + console.error('could not download file'); |
| 60 | + }; |
| 61 | + |
| 62 | + xhr.send(); |
| 63 | + } |
| 64 | + |
| 65 | + function corsEnabled(url) { |
| 66 | + var xhr = new XMLHttpRequest(); // use sync to avoid popup blocker |
| 67 | + |
| 68 | + xhr.open('HEAD', url, false); |
| 69 | + |
| 70 | + try { |
| 71 | + xhr.send(); |
| 72 | + } catch (e) {} |
| 73 | + |
| 74 | + return xhr.status >= 200 && xhr.status <= 299; |
| 75 | + } // `a.click()` doesn't work for all browsers (#465) |
| 76 | + |
| 77 | + |
| 78 | + function click(node) { |
| 79 | + try { |
| 80 | + node.dispatchEvent(new MouseEvent('click')); |
| 81 | + } catch (e) { |
| 82 | + var evt = document.createEvent('MouseEvents'); |
| 83 | + evt.initMouseEvent('click', true, true, window, 0, 0, 0, 80, 20, false, false, false, false, 0, null); |
| 84 | + node.dispatchEvent(evt); |
| 85 | + } |
| 86 | + } // Detect WebView inside a native macOS app by ruling out all browsers |
| 87 | + // We just need to check for 'Safari' because all other browsers (besides Firefox) include that too |
| 88 | + // https://www.whatismybrowser.com/guides/the-latest-user-agent/macos |
| 89 | + |
| 90 | + |
| 91 | + var isMacOSWebView = /Macintosh/.test(navigator.userAgent) && /AppleWebKit/.test(navigator.userAgent) && !/Safari/.test(navigator.userAgent); |
| 92 | + var saveAs = _global.saveAs || ( // probably in some web worker |
| 93 | + typeof window !== 'object' || window !== _global ? function saveAs() {} |
| 94 | + /* noop */ |
| 95 | + // Use download attribute first if possible (#193 Lumia mobile) unless this is a macOS WebView |
| 96 | + : 'download' in HTMLAnchorElement.prototype && !isMacOSWebView ? function saveAs(blob, name, opts) { |
| 97 | + var URL = _global.URL || _global.webkitURL; |
| 98 | + var a = document.createElement('a'); |
| 99 | + name = name || blob.name || 'download'; |
| 100 | + a.download = name; |
| 101 | + a.rel = 'noopener'; // tabnabbing |
| 102 | + // TODO: detect chrome extensions & packaged apps |
| 103 | + // a.target = '_blank' |
| 104 | + |
| 105 | + if (typeof blob === 'string') { |
| 106 | + // Support regular links |
| 107 | + a.href = blob; |
| 108 | + |
| 109 | + if (a.origin !== location.origin) { |
| 110 | + corsEnabled(a.href) ? download(blob, name, opts) : click(a, a.target = '_blank'); |
| 111 | + } else { |
| 112 | + click(a); |
| 113 | + } |
| 114 | + } else { |
| 115 | + // Support blobs |
| 116 | + a.href = URL.createObjectURL(blob); |
| 117 | + setTimeout(function () { |
| 118 | + URL.revokeObjectURL(a.href); |
| 119 | + }, 4E4); // 40s |
| 120 | + |
| 121 | + setTimeout(function () { |
| 122 | + click(a); |
| 123 | + }, 0); |
| 124 | + } |
| 125 | + } // Use msSaveOrOpenBlob as a second approach |
| 126 | + : 'msSaveOrOpenBlob' in navigator ? function saveAs(blob, name, opts) { |
| 127 | + name = name || blob.name || 'download'; |
| 128 | + |
| 129 | + if (typeof blob === 'string') { |
| 130 | + if (corsEnabled(blob)) { |
| 131 | + download(blob, name, opts); |
| 132 | + } else { |
| 133 | + var a = document.createElement('a'); |
| 134 | + a.href = blob; |
| 135 | + a.target = '_blank'; |
| 136 | + setTimeout(function () { |
| 137 | + click(a); |
| 138 | + }); |
| 139 | + } |
| 140 | + } else { |
| 141 | + navigator.msSaveOrOpenBlob(bom(blob, opts), name); |
| 142 | + } |
| 143 | + } // Fallback to using FileReader and a popup |
| 144 | + : function saveAs(blob, name, opts, popup) { |
| 145 | + // Open a popup immediately do go around popup blocker |
| 146 | + // Mostly only available on user interaction and the fileReader is async so... |
| 147 | + popup = popup || open('', '_blank'); |
| 148 | + |
| 149 | + if (popup) { |
| 150 | + popup.document.title = popup.document.body.innerText = 'downloading...'; |
| 151 | + } |
| 152 | + |
| 153 | + if (typeof blob === 'string') return download(blob, name, opts); |
| 154 | + var force = blob.type === 'application/octet-stream'; |
| 155 | + |
| 156 | + var isSafari = /constructor/i.test(_global.HTMLElement) || _global.safari; |
| 157 | + |
| 158 | + var isChromeIOS = /CriOS\/[\d]+/.test(navigator.userAgent); |
| 159 | + |
| 160 | + if ((isChromeIOS || force && isSafari || isMacOSWebView) && typeof FileReader !== 'undefined') { |
| 161 | + // Safari doesn't allow downloading of blob URLs |
| 162 | + var reader = new FileReader(); |
| 163 | + |
| 164 | + reader.onloadend = function () { |
| 165 | + var url = reader.result; |
| 166 | + url = isChromeIOS ? url : url.replace(/^data:[^;]*;/, 'data:attachment/file;'); |
| 167 | + if (popup) popup.location.href = url;else location = url; |
| 168 | + popup = null; // reverse-tabnabbing #460 |
| 169 | + }; |
| 170 | + |
| 171 | + reader.readAsDataURL(blob); |
| 172 | + } else { |
| 173 | + var URL = _global.URL || _global.webkitURL; |
| 174 | + var url = URL.createObjectURL(blob); |
| 175 | + if (popup) popup.location = url;else location.href = url; |
| 176 | + popup = null; // reverse-tabnabbing #460 |
| 177 | + |
| 178 | + setTimeout(function () { |
| 179 | + URL.revokeObjectURL(url); |
| 180 | + }, 4E4); // 40s |
| 181 | + } |
| 182 | + }); |
| 183 | + _global.saveAs = saveAs.saveAs = saveAs; |
| 184 | + |
| 185 | + if (typeof module !== 'undefined') { |
| 186 | + module.exports = saveAs; |
| 187 | + } |
| 188 | +}); |
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