Delete DropBytes.mjs

src/core/operations/DropBytes.mjs

@@ -1,123 +0,0 @@
-/**
- * @author n1474335 [n1474335@gmail.com]
- * @copyright Crown Copyright 2016
- * @license Apache-2.0
- */
-
-import Operation from "../Operation.mjs";
-
-/**
- * Drop bytes operation
- */
-class DropBytes extends Operation {
-
-    /**
-     * DropBytes constructor
-     */
-    constructor() {
-        super();
-
-        this.name = "Drop bytes";
-        this.module = "Default";
-        this.description = "Cuts a slice of the specified number of bytes out of the data. Negative values are allowed.";
-        this.inputType = "ArrayBuffer";
-        this.outputType = "ArrayBuffer";
-        this.args = [
-            {
-                "name": "Start",
-                "type": "number",
-                "value": 0
-            },
-            {
-                "name": "Length",
-                "type": "number",
-                "value": 5
-            },
-            {
-                "name": "Apply to each line",
-                "type": "boolean",
-                "value": false
-            }
-        ];
-    }
-
-    /**
-     * @param {ArrayBuffer} input
-     * @param {Object[]} args
-     * @returns {ArrayBuffer}
-     *
-     * @throws {OperationError} if invalid input
-     */
-    run(input, args) {
-        let start = args[0],
-            length = args[1];
-        const applyToEachLine = args[2];
-
-        if (!applyToEachLine) {
-            if (start < 0) { // Take from the end
-                start = input.byteLength + start;
-            }
-
-            if (length < 0) { // Flip start point
-                start = start + length;
-                if (start < 0) {
-                    start = input.byteLength + start;
-                    length = start - length;
-                } else {
-                    length = -length;
-                }
-            }
-
-            const left = input.slice(0, start),
-                right = input.slice(start + length, input.byteLength);
-            const result = new Uint8Array(left.byteLength + right.byteLength);
-            result.set(new Uint8Array(left), 0);
-            result.set(new Uint8Array(right), left.byteLength);
-            return result.buffer;
-        }
-
-        // Split input into lines
-        const data = new Uint8Array(input);
-        const lines = [];
-        let line = [],
-            i;
-
-        for (i = 0; i < data.length; i++) {
-            if (data[i] === 0x0a) {
-                lines.push(line);
-                line = [];
-            } else {
-                line.push(data[i]);
-            }
-        }
-        lines.push(line);
-
-        let output = [],
-            s = start,
-            l = length;
-        for (i = 0; i < lines.length; i++) {
-            if (s < 0) { // Take from the end
-                s = lines[i].length + s;
-            }
-
-            if (l < 0) { // Flip start point
-                s = s + l;
-                if (s < 0) {
-                    s = lines[i].length + s;
-                    l = s - l;
-                } else {
-                    l = -l;
-                }
-            }
-
-            output = output.concat(lines[i].slice(0, s).concat(lines[i].slice(s+l, lines[i].length)));
-            output.push(0x0a);
-            s = start;
-            l = length;
-        }
-        return new Uint8Array(output.slice(0, output.length-1)).buffer;
-    }
-
-}
-
-export default DropBytes;