ESM: Tidied up recently added operations

src/core/lib/PublicKey.mjs

@@ -1,5 +1,5 @@
 /**
- * Public key functions.
+ * Public key resources.
  *
  * @author n1474335 [n1474335@gmail.com]
  * @copyright Crown Copyright 2016

src/core/operations/CSSSelector.mjs

@@ -4,8 +4,10 @@
  * @license Apache-2.0
  */
 
-import nwmatcher from "nwmatcher";
 import Operation from "../Operation";
+import OperationError from "../errors/OperationError";
+import xmldom from "xmldom";
+import nwmatcher from "nwmatcher";
 
 /**
  * CSS selector operation
@@ -44,7 +46,7 @@ class CSSSelector extends Operation {
      */
     run(input, args) {
         const [query, delimiter] = args,
-            parser = new DOMParser();
+            parser = new xmldom.DOMParser();
         let dom,
             result;
 
@@ -55,14 +57,14 @@ class CSSSelector extends Operation {
         try {
             dom = parser.parseFromString(input);
         } catch (err) {
-            return "Invalid input HTML.";
+            throw new OperationError("Invalid input HTML.");
         }
 
         try {
             const matcher = nwmatcher({document: dom});
             result = matcher.select(query, dom);
         } catch (err) {
-            return "Invalid CSS Selector. Details:\n" + err.message;
+            throw new OperationError("Invalid CSS Selector. Details:\n" + err.message);
         }
 
         const nodeToString = function(node) {

src/core/operations/Diff.mjs

@@ -6,7 +6,7 @@
 
 import Operation from "../Operation";
 import Utils from "../Utils";
-import JsDiff from "diff";
+import * as JsDiff from "diff";
 import OperationError from "../errors/OperationError";
 
 /**
@@ -71,36 +71,39 @@ class Diff extends Operation {
         let output = "",
             diff;
 
+        // Node and Webpack load modules slightly differently
+        const jsdiff = JsDiff.default ? JsDiff.default : JsDiff;
+
         if (!samples || samples.length !== 2) {
             throw new OperationError("Incorrect number of samples, perhaps you need to modify the sample delimiter or add more samples?");
         }
 
         switch (diffBy) {
             case "Character":
-                diff = JsDiff.diffChars(samples[0], samples[1]);
+                diff = jsdiff.diffChars(samples[0], samples[1]);
                 break;
             case "Word":
                 if (ignoreWhitespace) {
-                    diff = JsDiff.diffWords(samples[0], samples[1]);
+                    diff = jsdiff.diffWords(samples[0], samples[1]);
                 } else {
-                    diff = JsDiff.diffWordsWithSpace(samples[0], samples[1]);
+                    diff = jsdiff.diffWordsWithSpace(samples[0], samples[1]);
                 }
                 break;
             case "Line":
                 if (ignoreWhitespace) {
-                    diff = JsDiff.diffTrimmedLines(samples[0], samples[1]);
+                    diff = jsdiff.diffTrimmedLines(samples[0], samples[1]);
                 } else {
-                    diff = JsDiff.diffLines(samples[0], samples[1]);
+                    diff = jsdiff.diffLines(samples[0], samples[1]);
                 }
                 break;
             case "Sentence":
-                diff = JsDiff.diffSentences(samples[0], samples[1]);
+                diff = jsdiff.diffSentences(samples[0], samples[1]);
                 break;
             case "CSS":
-                diff = JsDiff.diffCss(samples[0], samples[1]);
+                diff = jsdiff.diffCss(samples[0], samples[1]);
                 break;
             case "JSON":
-                diff = JsDiff.diffJson(samples[0], samples[1]);
+                diff = jsdiff.diffJson(samples[0], samples[1]);
                 break;
             default:
                 throw new OperationError("Invalid 'Diff by' option.");

src/core/operations/ExtractEXIF.mjs

@@ -21,7 +21,13 @@ class ExtractEXIF extends Operation {
 
         this.name = "Extract EXIF";
         this.module = "Image";
-        this.description = "Extracts EXIF data from an image.\n<br><br>\nEXIF data is metadata embedded in images (JPEG, JPG, TIFF) and audio files.\n<br><br>\nEXIF data from photos usually contains information about the image file itself as well as the device used to create it.";
+        this.description = [
+            "Extracts EXIF data from an image.",
+            "<br><br>",
+            "EXIF data is metadata embedded in images (JPEG, JPG, TIFF) and audio files.",
+            "<br><br>",
+            "EXIF data from photos usually contains information about the image file itself as well as the device used to create it.",
+        ].join("\n");
         this.inputType = "ArrayBuffer";
         this.outputType = "string";
         this.args = [];

src/core/operations/FindReplace.mjs

@@ -20,7 +20,7 @@ class FindReplace extends Operation {
 
         this.name = "Find / Replace";
         this.module = "Regex";
-        this.description = "Replaces all occurrences of the first string with the second.<br><br> Includes support for regular expressions (regex), simple strings and extended strings (which support \\n, \\r, \\t, \\b, \\f and escaped hex bytes using \\x notation, e.g. \\x00 for a null byte).";
+        this.description = "Replaces all occurrences of the first string with the second.<br><br>Includes support for regular expressions (regex), simple strings and extended strings (which support \\n, \\r, \\t, \\b, \\f and escaped hex bytes using \\x notation, e.g. \\x00 for a null byte).";
         this.inputType = "string";
         this.outputType = "string";
         this.args = [

src/core/operations/ParseX509Certificate.mjs

@@ -198,8 +198,6 @@ ${extensions}`;
 
 }
 
-export default ParseX509Certificate;
-
 /**
  * Formats dates.
  *
@@ -214,3 +212,5 @@ function formatDate (dateStr) {
         dateStr[8] + dateStr[9] + ":" +
         dateStr[10] + dateStr[11];
 }
+
+export default ParseX509Certificate;

src/core/operations/RegularExpression.mjs

@@ -7,6 +7,7 @@
 import XRegExp from "xregexp";
 import Operation from "../Operation";
 import Utils from "../Utils";
+import OperationError from "../errors/OperationError";
 
 /**
  * Regular expression operation
@@ -133,14 +134,12 @@ class RegularExpression extends Operation {
      * @returns {html}
      */
     run(input, args) {
-        const userRegex = args[1],
-            i = args[2],
-            m = args[3],
-            s = args[4],
-            u = args[5],
-            a = args[6],
-            displayTotal = args[7],
-            outputFormat = args[8];
+        const [,
+            userRegex,
+            i, m, s, u, a,
+            displayTotal,
+            outputFormat
+        ] = args;
         let modifiers = "g";
 
         if (i) modifiers += "i";
@@ -166,7 +165,7 @@ class RegularExpression extends Operation {
                         return "Error: Invalid output format";
                 }
             } catch (err) {
-                return "Invalid regex. Details: " + err.message;
+                throw new OperationError("Invalid regex. Details: " + err.message);
             }
         } else {
             return Utils.escapeHtml(input);
@@ -175,8 +174,6 @@ class RegularExpression extends Operation {
 
 }
 
-export default RegularExpression;
-
 /**
  * Creates a string listing the matches within a string.
  *
@@ -261,3 +258,5 @@ function regexHighlight (input, regex, displayTotal) {
 
     return output;
 }
+
+export default RegularExpression;

src/core/operations/RemoveEXIF.mjs

@@ -21,7 +21,11 @@ class RemoveEXIF extends Operation {
 
         this.name = "Remove EXIF";
         this.module = "Image";
-        this.description = "Removes EXIF data from a JPEG image.\n<br><br>\nEXIF data embedded in photos usually contains information about the image file itself as well as the device used to create it.";
+        this.description = [
+            "Removes EXIF data from a JPEG image.",
+            "<br><br>",
+            "EXIF data embedded in photos usually contains information about the image file itself as well as the device used to create it.",
+        ].join("\n");
         this.inputType = "byteArray";
         this.outputType = "byteArray";
         this.args = [];

src/core/operations/RenderImage.mjs

@@ -7,6 +7,7 @@
 import { fromBase64, toBase64 } from "../lib/Base64";
 import { fromHex } from "../lib/Hex";
 import Operation from "../Operation";
+import OperationError from "../errors/OperationError";
 import Utils from "../Utils";
 import Magic from "../lib/Magic";
 
@@ -37,9 +38,7 @@ class RenderImage extends Operation {
             {
                 "match": "^(?:\\xff\\xd8\\xff|\\x89\\x50\\x4e\\x47|\\x47\\x49\\x46|.{8}\\x57\\x45\\x42\\x50|\\x42\\x4d)",
                 "flags": "",
-                "args": [
-                    "Raw"
-                ],
+                "args": ["Raw"],
                 "useful": true
             }
         ];
@@ -77,7 +76,7 @@ class RenderImage extends Operation {
         if (type && type.mime.indexOf("image") === 0) {
             dataURI += type.mime + ";";
         } else {
-            throw "Invalid file type";
+            throw new OperationError("Invalid file type");
         }
 
         // Add image data to URI

src/core/operations/XPathExpression.mjs

@@ -4,9 +4,10 @@
  * @license Apache-2.0
  */
 
-import xpath from "xpath";
 import Operation from "../Operation";
 import OperationError from "../errors/OperationError";
+import xmldom from "xmldom";
+import xpath from "xpath";
 
 /**
  * XPath expression operation
@@ -48,7 +49,7 @@ class XPathExpression extends Operation {
 
         let doc;
         try {
-            doc = new DOMParser().parseFromString(input, "application/xml");
+            doc = new xmldom.DOMParser().parseFromString(input, "application/xml");
         } catch (err) {
             throw new OperationError("Invalid input XML.");
         }

test/tests/operations/Code.mjs

@@ -310,7 +310,6 @@ TestRegister.addTests([
             }
         ],
     },
-    /* Since we don't pack ops before running tests, there's no polyfill for DomParser()
     {
         name: "CSS selector",
         input: '<div id="test">\n<p class="a">hello</p>\n<p>world</p>\n<p class="a">again</p>\n</div>',
@@ -332,5 +331,5 @@ TestRegister.addTests([
                 "args": ["/div/p[@class=\"a\"]", "\\n"]
             }
         ]
-    }*/
+    }
 ]);