ESM: Ported StrUtils and NetBIOS operations.

src/core/operations/OffsetChecker.mjs

@@ -0,0 +1,106 @@
+/**
+ * @author n1474335 [n1474335@gmail.com]
+ * @copyright Crown Copyright 2016
+ * @license Apache-2.0
+ */
+
+import Operation from "../Operation";
+import Utils from "../Utils";
+
+/**
+ * Offset checker operation
+ */
+class OffsetChecker extends Operation {
+
+    /**
+     * OffsetChecker constructor
+     */
+    constructor() {
+        super();
+
+        this.name = "Offset checker";
+        this.module = "Default";
+        this.description = "Compares multiple inputs (separated by the specified delimiter) and highlights matching characters which appear at the same position in all samples.";
+        this.inputType = "string";
+        this.outputType = "html";
+        this.args = [
+            {
+                "name": "Sample delimiter",
+                "type": "binaryString",
+                "value": "\\n\\n"
+            }
+        ];
+    }
+
+    /**
+     * @param {string} input
+     * @param {Object[]} args
+     * @returns {html}
+     */
+    run(input, args) {
+        const sampleDelim = args[0],
+            samples = input.split(sampleDelim),
+            outputs = new Array(samples.length);
+        let i = 0,
+            s = 0,
+            match = false,
+            inMatch = false,
+            chr;
+
+        if (!samples || samples.length < 2) {
+            return "Not enough samples, perhaps you need to modify the sample delimiter or add more data?";
+        }
+
+        // Initialise output strings
+        outputs.fill("", 0, samples.length);
+
+        // Loop through each character in the first sample
+        for (i = 0; i < samples[0].length; i++) {
+            chr = samples[0][i];
+            match = false;
+
+            // Loop through each sample to see if the chars are the same
+            for (s = 1; s < samples.length; s++) {
+                if (samples[s][i] !== chr) {
+                    match = false;
+                    break;
+                }
+                match = true;
+            }
+
+            // Write output for each sample
+            for (s = 0; s < samples.length; s++) {
+                if (samples[s].length <= i) {
+                    if (inMatch) outputs[s] += "</span>";
+                    if (s === samples.length - 1) inMatch = false;
+                    continue;
+                }
+
+                if (match && !inMatch) {
+                    outputs[s] += "<span class='hl5'>" + Utils.escapeHtml(samples[s][i]);
+                    if (samples[s].length === i + 1) outputs[s] += "</span>";
+                    if (s === samples.length - 1) inMatch = true;
+                } else if (!match && inMatch) {
+                    outputs[s] += "</span>" + Utils.escapeHtml(samples[s][i]);
+                    if (s === samples.length - 1) inMatch = false;
+                } else {
+                    outputs[s] += Utils.escapeHtml(samples[s][i]);
+                    if (inMatch && samples[s].length === i + 1) {
+                        outputs[s] += "</span>";
+                        if (samples[s].length - 1 !== i) inMatch = false;
+                    }
+                }
+
+                if (samples[0].length - 1 === i) {
+                    if (inMatch) outputs[s] += "</span>";
+                    outputs[s] += Utils.escapeHtml(samples[s].substring(i + 1));
+                }
+            }
+        }
+
+        return outputs.join(sampleDelim);
+    }
+
+}
+
+export default OffsetChecker;