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2025-08-12 15:04:01 +08:00
parent df3f5f5269
commit 6708fb8eeb
544 changed files with 75169 additions and 17 deletions
@@ -0,0 +1,127 @@
+import Barcode from "../Barcode.js";
+import { SHIFT, SET_A, SET_B, MODULO, STOP, FNC1, SET_BY_CODE, 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 = SET_BY_CODE[startIndex];
+
+		if (startSet === undefined) {
+			throw new RangeError('The encoding does not start with a start character.');
+		}
+
+		if (this.shouldEncodeAsEan128() === true) {
+			bytes.unshift(FNC1);
+		}
+
+		// 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)
+		};
+	}
+
+	// GS1-128/EAN-128
+	shouldEncodeAsEan128() {
+		let isEAN128 = this.options.ean128 || false;
+		if (typeof isEAN128 === 'string') {
+			isEAN128 = isEAN128.toLowerCase() === 'true';
+		}
+		return isEAN128;
+	}
+
+	// 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 };
+		}
+
+		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;
@@ -0,0 +1,14 @@
+import CODE128 from './CODE128.js';
+import { A_START_CHAR, A_CHARS } from './constants';
+
+class CODE128A extends CODE128 {
+	constructor(string, options) {
+		super(A_START_CHAR + string, options);
+	}
+
+	valid() {
+		return (new RegExp(`^${A_CHARS}+$`)).test(this.data);
+	}
+}
+
+export default CODE128A;
@@ -0,0 +1,14 @@
+import CODE128 from './CODE128.js';
+import { B_START_CHAR, B_CHARS } from './constants';
+
+class CODE128B extends CODE128 {
+	constructor(string, options) {
+		super(B_START_CHAR + string, options);
+	}
+
+	valid() {
+		return (new RegExp(`^${B_CHARS}+$`)).test(this.data);
+	}
+}
+
+export default CODE128B;
@@ -0,0 +1,14 @@
+import CODE128 from './CODE128.js';
+import { C_START_CHAR, C_CHARS } from './constants';
+
+class CODE128C extends CODE128 {
+	constructor(string, options) {
+		super(C_START_CHAR + string, options);
+	}
+
+	valid() {
+		return (new RegExp(`^${C_CHARS}+$`)).test(this.data);
+	}
+}
+
+export default CODE128C;
@@ -0,0 +1,15 @@
+import CODE128 from './CODE128';
+import autoSelectModes from './auto';
+
+class CODE128AUTO extends CODE128{
+	constructor(data, options){
+    // ASCII value ranges 0-127, 200-211
+		if (/^[\x00-\x7F\xC8-\xD3]+$/.test(data)) {
+			super(autoSelectModes(data), options);
+		} else{
+			super(data, options);
+		}
+	}
+}
+
+export default CODE128AUTO;
@@ -0,0 +1,68 @@
+import { A_START_CHAR, B_START_CHAR, C_START_CHAR, A_CHARS, B_CHARS, C_CHARS } from './constants';
+
+// Match Set functions
+const matchSetALength = (string) => string.match(new RegExp(`^${A_CHARS}*`))[0].length;
+const matchSetBLength = (string) => string.match(new RegExp(`^${B_CHARS}*`))[0].length;
+const matchSetC = (string) => string.match(new RegExp(`^${C_CHARS}*`))[0];
+
+// CODE128A or CODE128B
+function autoSelectFromAB(string, isA){
+	const ranges = isA ? A_CHARS : B_CHARS;
+	const untilC = string.match(new RegExp(`^(${ranges}+?)(([0-9]{2}){2,})([^0-9]|$)`));
+
+	if (untilC) {
+		return (
+			untilC[1] +
+			String.fromCharCode(204) +
+			autoSelectFromC(string.substring(untilC[1].length))
+		);
+	}
+
+	const chars = string.match(new RegExp(`^${ranges}+`))[0];
+
+	if (chars.length === string.length) {
+		return string;
+	}
+
+	return (
+		chars +
+		String.fromCharCode(isA ? 205 : 206) +
+		autoSelectFromAB(string.substring(chars.length), !isA)
+	);
+}
+
+// CODE128C
+function autoSelectFromC(string) {
+	const cMatch = matchSetC(string);
+	const length = cMatch.length;
+
+	if (length === string.length) {
+		return string;
+	}
+
+	string = string.substring(length);
+
+	// Select A/B depending on the longest match
+	const isA = matchSetALength(string) >= matchSetBLength(string);
+	return cMatch + String.fromCharCode(isA ? 206 : 205) + autoSelectFromAB(string, isA);
+}
+
+// Detect Code Set (A, B or C) and format the string
+export default (string) => {
+	let newString;
+	const cLength = matchSetC(string).length;
+
+	// Select 128C if the string start with enough digits
+	if (cLength >= 2) {
+		newString = C_START_CHAR + autoSelectFromC(string);
+	} else {
+		// Select A/B depending on the longest match
+		const isA = matchSetALength(string) > matchSetBLength(string);
+		newString = (isA ? A_START_CHAR : B_START_CHAR) + autoSelectFromAB(string, isA);
+	}
+
+	return newString.replace(
+		/[\xCD\xCE]([^])[\xCD\xCE]/, // Any sequence between 205 and 206 characters
+		(match, char) => String.fromCharCode(203) + char
+	);
+};
@@ -0,0 +1,71 @@
+// constants for internal usage
+export const SET_A = 0;
+export const SET_B = 1;
+export const SET_C = 2;
+
+// Special characters
+export const SHIFT = 98;
+export const START_A = 103;
+export const START_B = 104;
+export const START_C = 105;
+export const MODULO = 103;
+export const STOP = 106;
+export const FNC1 = 207;
+
+// Get set by start code
+export const SET_BY_CODE = {
+	[START_A]: SET_A,
+	[START_B]: SET_B,
+	[START_C]: SET_C,
+};
+
+// Get next set by code
+export const SWAP = {
+	101: SET_A,
+	100: SET_B,
+	99: SET_C,
+};
+
+export const A_START_CHAR = String.fromCharCode(208); // START_A + 105
+export const B_START_CHAR = String.fromCharCode(209); // START_B + 105
+export const C_START_CHAR = String.fromCharCode(210); // START_C + 105
+
+// 128A (Code Set A)
+// ASCII characters 00 to 95 (0–9, A–Z and control codes), special characters, and FNC 1–4
+export const A_CHARS = "[\x00-\x5F\xC8-\xCF]";
+
+// 128B (Code Set B)
+// ASCII characters 32 to 127 (0–9, A–Z, a–z), special characters, and FNC 1–4
+export const B_CHARS = "[\x20-\x7F\xC8-\xCF]";
+
+// 128C (Code Set C)
+// 00–99 (encodes two digits with a single code point) and FNC1
+export const C_CHARS = "(\xCF*[0-9]{2}\xCF*)";
+
+// CODE128 includes 107 symbols:
+// 103 data symbols, 3 start symbols (A, B and C), and 1 stop symbol (the last one)
+// Each symbol consist of three black bars (1) and three white spaces (0).
+export const BARS = [
+	11011001100, 11001101100, 11001100110, 10010011000, 10010001100,
+	10001001100, 10011001000, 10011000100, 10001100100, 11001001000,
+	11001000100, 11000100100, 10110011100, 10011011100, 10011001110,
+	10111001100, 10011101100, 10011100110, 11001110010, 11001011100,
+	11001001110, 11011100100, 11001110100, 11101101110, 11101001100,
+	11100101100, 11100100110, 11101100100, 11100110100, 11100110010,
+	11011011000, 11011000110, 11000110110, 10100011000, 10001011000,
+	10001000110, 10110001000, 10001101000, 10001100010, 11010001000,
+	11000101000, 11000100010, 10110111000, 10110001110, 10001101110,
+	10111011000, 10111000110, 10001110110, 11101110110, 11010001110,
+	11000101110, 11011101000, 11011100010, 11011101110, 11101011000,
+	11101000110, 11100010110, 11101101000, 11101100010, 11100011010,
+	11101111010, 11001000010, 11110001010, 10100110000, 10100001100,
+	10010110000, 10010000110, 10000101100, 10000100110, 10110010000,
+	10110000100, 10011010000, 10011000010, 10000110100, 10000110010,
+	11000010010, 11001010000, 11110111010, 11000010100, 10001111010,
+	10100111100, 10010111100, 10010011110, 10111100100, 10011110100,
+	10011110010, 11110100100, 11110010100, 11110010010, 11011011110,
+	11011110110, 11110110110, 10101111000, 10100011110, 10001011110,
+	10111101000, 10111100010, 11110101000, 11110100010, 10111011110,
+	10111101110, 11101011110, 11110101110, 11010000100, 11010010000,
+	11010011100, 1100011101011
+];
@@ -0,0 +1,6 @@
+import CODE128 from './CODE128_AUTO.js';
+import CODE128A from './CODE128A.js';
+import CODE128B from './CODE128B.js';
+import CODE128C from './CODE128C.js';
+
+export {CODE128, CODE128A, CODE128B, CODE128C};