CODE128.js ➔ ... ➔ ??? - Code Metrics - Inspection of "[WIP] Refactor CODE128" - lindell/JsBarcode - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#150)

unknown

created 2017-05-13 18:42 UTC

CODE128.js ➔ ... ➔ ??? A

↳ Parent: CODE128.js ➔ ???

Complexity

Conditions	1
Paths	1

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	1
nc	1
nop	1
dl	0
loc	1
rs	10
c	0
b	0
f	0

import Barcode from "../Barcode.js";
import { SHIFT, SET_A, SET_B, MODULO, STOP, ABC, SWAP, BARS } from './constants';

// This is the master class,
// it does require the start code to be included in the string
class CODE128 extends Barcode {
	constructor(data, options) {
		super(data.substring(1), options);

		// Get array of ascii codes from data
		this.bytes = data.split('')
			.map(char => char.charCodeAt(0));
	}

	valid() {
		// ASCII value ranges 0-127, 200-211
		return /^[\x00-\x7F\xC8-\xD3]+$/.test(this.data);
	}

	// The public encoding function
	encode() {
		const bytes = this.bytes;
		// Remove the start code from the bytes and set its index
		const startIndex = bytes.shift() - 105;
		// Get start set by index
		const startSet = ABC[startIndex];

		if (startSet === undefined) {
			throw new RangeError('The encoding does not start with a start character.');
		}

		// Start encode with the right type
		const encodingResult = CODE128.next(bytes, 1, startSet);

		return {
			text:
				this.text === this.data
					? this.text.replace(/[^\x20-\x7E]/g, '')
					: this.text,
			data:
				// Add the start bits
				CODE128.getBar(startIndex) +
				// Add the encoded bits
				encodingResult.result +
				// Add the checksum
				CODE128.getBar((encodingResult.checksum + startIndex) % MODULO) +
				// Add the end bits
				CODE128.getBar(STOP)
		};
	}

	// Get a bar symbol by index
	static getBar(index) {
		return BARS[index] ? BARS[index].toString() : '';
	}

	// Correct an index by a set and shift it from the bytes array
	static correctIndex(bytes, set) {
		if (set === SET_A) {
			const charCode = bytes.shift();
			return charCode < 32 ? charCode + 64 : charCode - 32;
		} else if (set === SET_B) {
			return bytes.shift() - 32;
		} else {
			return (bytes.shift() - 48) * 10 + bytes.shift() - 48;
		}
	}

	static next(bytes, pos, set) {
		if (!bytes.length) return { result: '', checksum: 0 };
if (a > 0)
    b = 42;
		let nextCode, index;

		// Special characters
		if (bytes[0] >= 200){
			index = bytes.shift() - 105;
			const nextSet = SWAP[index];

			// Swap to other set
			if (nextSet !== undefined) {
				nextCode = CODE128.next(bytes, pos + 1, nextSet);
			}
			// Continue on current set but encode a special character
			else {
				// Shift
				if ((set === SET_A || set === SET_B) && index === SHIFT) {
					// Convert the next character so that is encoded correctly
					bytes[0] = (set === SET_A)
						? bytes[0] > 95 ? bytes[0] - 96 : bytes[0]
						: bytes[0] < 32 ? bytes[0] + 96 : bytes[0];
				}
				nextCode = CODE128.next(bytes, pos + 1, set);
			}
		}
		// Continue encoding
		else {
			index = CODE128.correctIndex(bytes, set);
			nextCode = CODE128.next(bytes, pos + 1, set);
		}

		// Get the correct binary encoding and calculate the weight
		const enc = CODE128.getBar(index);
		const weight = index * pos;

		return {
			result: enc + nextCode.result,
			checksum: weight + nextCode.checksum
		};
	}
}

export default CODE128;


1			import Barcode from "../Barcode.js";
2			import { SHIFT, SET_A, SET_B, MODULO, STOP, ABC, SWAP, BARS } from './constants';
3
4			// This is the master class,
5			// it does require the start code to be included in the string
6			class CODE128 extends Barcode {
7			constructor(data, options) {
8			super(data.substring(1), options);
9
10			// Get array of ascii codes from data
11			this.bytes = data.split('')
12			.map(char => char.charCodeAt(0));
13			}
14
15			valid() {
16			// ASCII value ranges 0-127, 200-211
17			return /^[\x00-\x7F\xC8-\xD3]+$/.test(this.data);
18			}
19
20			// The public encoding function
21			encode() {
22			const bytes = this.bytes;
23			// Remove the start code from the bytes and set its index
24			const startIndex = bytes.shift() - 105;
25			// Get start set by index
26			const startSet = ABC[startIndex];
27
28			if (startSet === undefined) {
29			throw new RangeError('The encoding does not start with a start character.');
30			}
31
32			// Start encode with the right type
33			const encodingResult = CODE128.next(bytes, 1, startSet);
34
35			return {
36			text:
37			this.text === this.data
38			? this.text.replace(/[^\x20-\x7E]/g, '')
39			: this.text,
40			data:
41			// Add the start bits
42			CODE128.getBar(startIndex) +
43			// Add the encoded bits
44			encodingResult.result +
45			// Add the checksum
46			CODE128.getBar((encodingResult.checksum + startIndex) % MODULO) +
47			// Add the end bits
48			CODE128.getBar(STOP)
49			};
50			}
51
52			// Get a bar symbol by index
53			static getBar(index) {
54			return BARS[index] ? BARS[index].toString() : '';
55			}
56
57			// Correct an index by a set and shift it from the bytes array
58			static correctIndex(bytes, set) {
59			if (set === SET_A) {
60			const charCode = bytes.shift();
61			return charCode < 32 ? charCode + 64 : charCode - 32;
62			} else if (set === SET_B) {
63			return bytes.shift() - 32;
64			} else {
65			return (bytes.shift() - 48) * 10 + bytes.shift() - 48;
66			}
67			}
68
69			static next(bytes, pos, set) {
70			if (!bytes.length) return { result: '', checksum: 0 };
			0 ignored issues – show Coding Style Best Practice introduced 2017-05-13 14:06 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...
71			let nextCode, index;
72
73			// Special characters
74			if (bytes[0] >= 200){
75			index = bytes.shift() - 105;
76			const nextSet = SWAP[index];
77
78			// Swap to other set
79			if (nextSet !== undefined) {
80			nextCode = CODE128.next(bytes, pos + 1, nextSet);
81			}
82			// Continue on current set but encode a special character
83			else {
84			// Shift
85			if ((set === SET_A \|\| set === SET_B) && index === SHIFT) {
86			// Convert the next character so that is encoded correctly
87			bytes[0] = (set === SET_A)
88			? bytes[0] > 95 ? bytes[0] - 96 : bytes[0]
89			: bytes[0] < 32 ? bytes[0] + 96 : bytes[0];
90			}
91			nextCode = CODE128.next(bytes, pos + 1, set);
92			}
93			}
94			// Continue encoding
95			else {
96			index = CODE128.correctIndex(bytes, set);
97			nextCode = CODE128.next(bytes, pos + 1, set);
98			}
99
100			// Get the correct binary encoding and calculate the weight
101			const enc = CODE128.getBar(index);
102			const weight = index * pos;
103
104			return {
105			result: enc + nextCode.result,
106			checksum: weight + nextCode.checksum
107			};
108			}
109			}
110
111			export default CODE128;
112

lindell / JsBarcode

Pull Request — master (#150)

CODE128.js ➔ ... ➔ ??? A

Complexity

Size

Duplication

Importance

Duplication Side-by-Side

Filter issues like