src/Resources/Public/JavaScript/FileSaver/FileSaver.js - Code Metrics - Inspection of "Ap5 ap6 ap1 internal format" - kitodo/kitodo-publication - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Pull Request — master (#195)

unknown

created 2021-02-08 17:01 UTC

src/Resources/Public/JavaScript/FileSaver/FileSaver.js A

↳ Parent: Project

Complexity

Total Complexity	42
Complexity/F	2.47

Size

Lines of Code	188
Function Count	17

Duplication

Duplicated Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
eloc	110
c	0
b	0
f	0
dl	0
loc	188
rs	9.0399
wmc	42
mnd	25
bc	25
fnc	17
bpm	1.4705
cpm	2.4705
noi	19

5 Functions

Rating	Name	Size	Complexity
A	FileSaver.js ➔ click	9	2
C	FileSaver.js ➔ saveAs	1	9
C	FileSaver.js ➔ bom	19	11
A	FileSaver.js ➔ download	15	3
A	FileSaver.js ➔ corsEnabled	11	2

How to fix Complexity

(function (global, factory) {
  if (typeof define === "function" && define.amd) {

    define([], factory);
  } else if (typeof exports !== "undefined") {
    factory();
  } else {
    var mod = {
      exports: {}
    };
    factory();
    global.FileSaver = mod.exports;
  }
})(this, function () {
  "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 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 : void 0;


  function bom(blob, opts) {
    if (typeof opts === 'undefined') opts = {
if (a > 0)
    b = 42;
      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 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 = /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);
if (a > 0)
    b = 42;
    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;
if (a > 0)
    b = 42;
        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;
if (a > 0)
    b = 42;
      popup = null; // reverse-tabnabbing #460

      setTimeout(function () {
        URL.revokeObjectURL(url);
      }, 4E4); // 40s

    }
  });
  _global.saveAs = saveAs.saveAs = saveAs;

  if (typeof module !== 'undefined') {
    module.exports = saveAs;
  }
});


1			(function (global, factory) {
2			if (typeof define === "function" && define.amd) {
			0 ignored issues – show Bug introduced 2020-12-15 14:55 UTC by Report Bug Copy Issue Report The variable `define` seems to be never declared. If this is a global, consider adding a `/** global: define */` comment. This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed. To learn more about declaring variables in Javascript, see the MDN. Loading history...
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;
			0 ignored issues – show Bug introduced 2020-12-15 14:55 UTC by Report Bug Copy Issue Report The variable `self` seems to be never declared. If this is a global, consider adding a `/** global: self */` comment. This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed. To learn more about declaring variables in Javascript, see the MDN. Loading history... Coding Style introduced 2020-12-15 14:55 UTC by Report Bug Copy Issue Report Consider using `undefined` instead of `void(0)`. It is equivalent and more straightforward to read. Loading history...
28
29			function bom(blob, opts) {
30			if (typeof opts === 'undefined') opts = {
			0 ignored issues – show Coding Style Best Practice introduced 2020-12-15 14:55 UTC by Report Bug Copy Issue Report Curly braces around statements make for more readable code and help prevent bugs when you add further statements. Consider adding curly braces around all statements when they are executed conditionally. This is optional if there is only one statement, but leaving them out can lead to unexpected behaviour if another statement is added later. Consider: if (a > 0) b = 42; If you or someone else later decides to put another statement in, only the first statement will be executed. if (a > 0) console.log("a > 0"); b = 42; In this case the statement `b = 42` will always be executed, while the logging statement will be executed conditionally. if (a > 0) { console.log("a > 0"); b = 42; } ensures that the proper code will be executed conditionally no matter how many statements are added or removed. Loading history...
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=\sutf-8/i.test(blob.type)) {
41			return new Blob([String.fromCharCode(0xFEFF), blob], {
			0 ignored issues – show Bug introduced 2020-12-15 14:55 UTC by Report Bug Copy Issue Report The variable `Blob` seems to be never declared. If this is a global, consider adding a `/** global: Blob */` comment. This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed. To learn more about declaring variables in Javascript, see the MDN. Loading history...
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) {}
			0 ignored issues – show Coding Style Comprehensibility Best Practice introduced 2020-12-15 14:55 UTC by Report Bug Copy Issue Report Empty catch clauses should be used with caution; consider adding a comment why this is needed. Loading history...
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'));
			0 ignored issues – show Bug introduced 2020-12-15 14:55 UTC by Report Bug Copy Issue Report The variable `MouseEvent` seems to be never declared. If this is a global, consider adding a `/** global: MouseEvent */` comment. This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed. To learn more about declaring variables in Javascript, see the MDN. Loading history...
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);
			0 ignored issues – show Bug introduced 2020-12-15 14:55 UTC by Report Bug Copy Issue Report The variable `navigator` seems to be never declared. If this is a global, consider adding a `/** global: navigator */` comment. This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed. To learn more about declaring variables in Javascript, see the MDN. Loading history...
92			var saveAs = _global.saveAs \|\| ( // probably in some web worker
			0 ignored issues – show Comprehensibility Naming Best Practice introduced 2020-12-15 14:55 UTC by Report Bug Copy Issue Report The variable `saveAs` already seems to be declared on line `93`. Consider using another variable name or omitting the `var` keyword. This check looks for variables that are declared in multiple lines. There may be several reasons for this. In the simplest case the variable name was reused by mistake. This may lead to very hard to locate bugs. If you want to reuse a variable for another purpose, consider declaring it at or near the top of your function and just assigning to it subsequently so it is always declared. Loading history...
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) {
			0 ignored issues – show Bug introduced 2020-12-15 14:55 UTC by Report Bug Copy Issue Report The variable `HTMLAnchorElement` seems to be never declared. If this is a global, consider adding a `/** global: HTMLAnchorElement */` comment. This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed. To learn more about declaring variables in Javascript, see the MDN. Loading history...
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');
			0 ignored issues – show Bug introduced 2020-12-15 14:55 UTC by Report Bug Copy Issue Report The call to `click` seems to have too many arguments starting with `a.target = "_blank"`. Loading history...
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);
			0 ignored issues – show Bug introduced 2020-12-15 14:55 UTC by Report Bug Copy Issue Report The variable `navigator` seems to be never declared. If this is a global, consider adding a `/** global: navigator */` comment. This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed. To learn more about declaring variables in Javascript, see the MDN. Loading history...
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);
			0 ignored issues – show Coding Style Best Practice introduced 2020-12-15 14:55 UTC by Report Bug Copy Issue Report Curly braces around statements make for more readable code and help prevent bugs when you add further statements. Consider adding curly braces around all statements when they are executed conditionally. This is optional if there is only one statement, but leaving them out can lead to unexpected behaviour if another statement is added later. Consider: if (a > 0) b = 42; If you or someone else later decides to put another statement in, only the first statement will be executed. if (a > 0) console.log("a > 0"); b = 42; In this case the statement `b = 42` will always be executed, while the logging statement will be executed conditionally. if (a > 0) { console.log("a > 0"); b = 42; } ensures that the proper code will be executed conditionally no matter how many statements are added or removed. Loading history...
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);
			0 ignored issues – show Bug introduced 2020-12-15 14:55 UTC by Report Bug Copy Issue Report The variable `navigator` seems to be never declared. If this is a global, consider adding a `/** global: navigator */` comment. This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed. To learn more about declaring variables in Javascript, see the MDN. Loading history...
159
160			if ((isChromeIOS \|\| force && isSafari \|\| isMacOSWebView) && typeof FileReader !== 'undefined') {
			0 ignored issues – show Bug introduced 2020-12-15 14:55 UTC by Report Bug Copy Issue Report The variable `FileReader` seems to be never declared. If this is a global, consider adding a `/** global: FileReader */` comment. This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed. To learn more about declaring variables in Javascript, see the MDN. Loading history...
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;
			0 ignored issues – show Coding Style Best Practice introduced 2020-12-15 14:55 UTC by Report Bug Copy Issue Report Curly braces around statements make for more readable code and help prevent bugs when you add further statements. Consider adding curly braces around all statements when they are executed conditionally. This is optional if there is only one statement, but leaving them out can lead to unexpected behaviour if another statement is added later. Consider: if (a > 0) b = 42; If you or someone else later decides to put another statement in, only the first statement will be executed. if (a > 0) console.log("a > 0"); b = 42; In this case the statement `b = 42` will always be executed, while the logging statement will be executed conditionally. if (a > 0) { console.log("a > 0"); b = 42; } ensures that the proper code will be executed conditionally no matter how many statements are added or removed. Loading history...
168			popup = null; // reverse-tabnabbing #460
169			};
170
171			reader.readAsDataURL(blob);
			0 ignored issues – show Best Practice introduced 2020-12-15 14:55 UTC by Report Bug Copy Issue Report There is no `return` statement in this branch, but you do return something in other branches. Did you maybe miss it? If you do not want to return anything, consider adding `return undefined;` explicitly. Loading history...
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;
			0 ignored issues – show Coding Style Best Practice introduced 2020-12-15 14:55 UTC by Report Bug Copy Issue Report Curly braces around statements make for more readable code and help prevent bugs when you add further statements. Consider adding curly braces around all statements when they are executed conditionally. This is optional if there is only one statement, but leaving them out can lead to unexpected behaviour if another statement is added later. Consider: if (a > 0) b = 42; If you or someone else later decides to put another statement in, only the first statement will be executed. if (a > 0) console.log("a > 0"); b = 42; In this case the statement `b = 42` will always be executed, while the logging statement will be executed conditionally. if (a > 0) { console.log("a > 0"); b = 42; } ensures that the proper code will be executed conditionally no matter how many statements are added or removed. Loading history...
176			popup = null; // reverse-tabnabbing #460
177
178			setTimeout(function () {
179			URL.revokeObjectURL(url);
180			}, 4E4); // 40s
			0 ignored issues – show Best Practice introduced 2020-12-15 14:55 UTC by Report Bug Copy Issue Report There is no `return` statement in this branch, but you do return something in other branches. Did you maybe miss it? If you do not want to return anything, consider adding `return undefined;` explicitly. Loading history...
181			}
182			});
183			_global.saveAs = saveAs.saveAs = saveAs;
184
185			if (typeof module !== 'undefined') {
186			module.exports = saveAs;
187			}
188			});
189

kitodo / kitodo-publication

Pull Request — master (#195)

src/Resources/Public/JavaScript/FileSaver/FileSaver.js A

Complexity

Size

Duplication

Importance

5 Functions

How to fix Complexity

Complexity

Duplication Side-by-Side

Filter issues like