stuff

node_modules/mathjax-full/ts/input/tex/TexError.ts

@@ -0,0 +1,85 @@
+/*************************************************************
+ *
+ *  Copyright (c) 2009-2022 The MathJax Consortium
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+
+/**
+ * @fileoverview Error class for the TeX parser.
+ *
+ * @author v.sorge@mathjax.org (Volker Sorge)
+ */
+
+
+export default class TexError {
+
+  private static pattern =
+    /%(\d+|\{\d+\}|\{[a-z]+:\%\d+(?:\|(?:%\{\d+\}|%.|[^\}])*)+\}|.)/g;
+
+  /**
+   * Default error message.
+   * @type {string}
+   */
+  public message: string;
+
+  /**
+   * The old MathJax processing function.
+   * @param {string} str The basic error message.
+   * @param {string[]} args The arguments to be replaced in the error message.
+   * @return {string} The processed error string.
+   */
+  private static processString(str: string, args: string[]): string {
+    let parts = str.split(TexError.pattern);
+    for (let i = 1, m = parts.length; i < m; i += 2) {
+      let c = parts[i].charAt(0);  // first char will be { or \d or a char to be
+                                   // kept literally
+      if (c >= '0' && c <= '9') {    // %n
+        parts[i] = args[parseInt(parts[i], 10) - 1];
+        if (typeof parts[i] === 'number') {
+          parts[i] = parts[i].toString();
+        }
+      } else if (c === '{') {        // %{n} or %{plural:%n|...}
+        c = parts[i].substr(1);
+        if (c >= '0' && c <= '9') {  // %{n}
+          parts[i] = args[parseInt(parts[i].substr(1, parts[i].length - 2), 10) - 1];
+          if (typeof parts[i] === 'number') {
+            parts[i] = parts[i].toString();
+          }
+        } else {                     // %{plural:%n|...}
+          let match = parts[i].match(/^\{([a-z]+):%(\d+)\|(.*)\}$/);
+          if (match) {
+            // Removed plural here.
+            parts[i] = '%' + parts[i];
+          }
+        }
+      }
+      if (parts[i] == null) {
+        parts[i] = '???';
+      }
+    }
+    return parts.join('');
+  }
+
+  /**
+   * @constructor
+   * @param{string} id        message id (for localization)
+   * @param{string} message   text of English message
+   * @param{string[]=} rest   any substitution arguments
+   */
+  constructor(public id: string, message: string, ...rest: string[]) {
+    this.message = TexError.processString(message, rest);
+  }
+
+}