file_bytes_reader.js ➔ readBytes - Code Metrics - Dead4W/jsAesCrypt - Measure and Improve Code Quality continuously with Scrutinizer

file_bytes_reader.js ➔ readBytes A
last analyzed 2021-01-09 09:41 UTC

↳ Parent: src/file_bytes_reader.js

Complexity

Conditions

Size

Total Lines	7
Code Lines	4

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
eloc	4
dl	0
loc	7
rs	10
c	0
b	0
f	0
cc	2

/** global: aesCrypt */

/**
 * read file as string, bytes (uint8Array), int (1 byte)
 *
 *
 * @return The FileBytesReader object.
 *
 * @static
 *
 * @example
 *     var fileElement = document.getElementById('file').files[0];
 *     var file = new FileBytesReader(fileElement);
 *
 * @param file a fileElement object
 */

(function () {
    let LIB = aesCrypt;

    aesCrypt.FileBytesReader = function(file) {
        let _i = 0;
        let _fileSize = file.size;
        let _reader = new FileReader();

        let _file = file;

        function readChunk(length) {
            return new Promise((resolve, reject) => {
                let blob = _file.slice(_i, _i += length);

                _reader.onload = () => {
                    // return Uint8Array
                    resolve(new Uint8Array(_reader.result));
                };

                _reader.onerror = reject;

                _reader.readAsArrayBuffer(blob);
            });
        }

        async function readBytes(length) {
            if( _fileSize - _i < length ) {
                throw ("File is corrupted.");
            }
            
            return await readChunk(length);
        }

        async function readByte() {
            let bytes = await readBytes(1);
            return bytes[0];
        }

        function getCurrentPosition() {
            return _i;
        }

        function getLength() {
            return _fileSize;
        }

        return {
            readByte,
            readBytes,
            getCurrentPosition,
            getLength,
        };
    };

}());

1			/** global: aesCrypt */
2
3			/**
4			* read file as string, bytes (uint8Array), int (1 byte)
5			*
6			*
7			* @return The FileBytesReader object.
8			*
9			* @static
10			*
11			* @example
12			* var fileElement = document.getElementById('file').files[0];
13			* var file = new FileBytesReader(fileElement);
14			*
15			* @param file a fileElement object
16			*/
17
18			(function () {
19			let LIB = aesCrypt;
			0 ignored issues – show Unused Code introduced 2021-01-08 16:25 UTC by Report Bug Copy Issue Report The variable `LIB` seems to be never used. Consider removing it. Loading history...
20			aesCrypt.FileBytesReader = function(file) {
21			let _i = 0;
22			let _fileSize = file.size;
23			let _reader = new FileReader();
			0 ignored issues – show Bug introduced 2021-01-06 20:59 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...
24			let _file = file;
25
26			function readChunk(length) {
27			return new Promise((resolve, reject) => {
28			let blob = _file.slice(_i, _i += length);
29
30			_reader.onload = () => {
31			// return Uint8Array
32			resolve(new Uint8Array(_reader.result));
33			};
34
35			_reader.onerror = reject;
36
37			_reader.readAsArrayBuffer(blob);
38			});
39			}
40
41			async function readBytes(length) {
42			if( _fileSize - _i < length ) {
43			throw ("File is corrupted.");
44			}
45
46			return await readChunk(length);
47			}
48
49			async function readByte() {
50			let bytes = await readBytes(1);
51			return bytes[0];
52			}
53
54			function getCurrentPosition() {
55			return _i;
56			}
57
58			function getLength() {
59			return _fileSize;
60			}
61
62			return {
63			readByte,
64			readBytes,
65			getCurrentPosition,
66			getLength,
67			};
68			};
69
70			}());

Dead4W / jsAesCrypt

file_bytes_reader.js ➔ readBytes A last analyzed 2021-01-09 09:41 UTC

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file_bytes_reader.js ➔ readBytes A
last analyzed 2021-01-09 09:41 UTC