Adopt spreadsheet changes made in Balas development

[simantics/platform.git] / bundles / org.simantics.spreadsheet / src / org / simantics / spreadsheet / solver / formula / parser / SheetParserUtils.java

diff --git a/bundles/org.simantics.spreadsheet/src/org/simantics/spreadsheet/solver/formula/parser/SheetParserUtils.java b/bundles/org.simantics.spreadsheet/src/org/simantics/spreadsheet/solver/formula/parser/SheetParserUtils.java
new file mode 100644 (file)
index 0000000..970fb1d
--- /dev/null
+++ b/bundles/org.simantics.spreadsheet/src/org/simantics/spreadsheet/solver/formula/parser/SheetParserUtils.java
@@ -0,0 +1,78 @@
+/*******************************************************************************
+ *  Copyright (c) 2010 Association for Decentralized Information Management in
+ *  Industry THTH ry.
+ *  All rights reserved. This program and the accompanying materials
+ *  are made available under the terms of the Eclipse Public License v1.0
+ *  which accompanies this distribution, and is available at
+ *  http://www.eclipse.org/legal/epl-v10.html
+ *
+ *  Contributors:
+ *      VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.spreadsheet.solver.formula.parser;
+
+public class SheetParserUtils {
+
+       public static String escape(String str) {
+               StringBuilder b = new StringBuilder();
+               for(int i = 0;i<str.length();++i) {
+                       char c = str.charAt(i);
+                       switch(c) {
+                       case '\n':
+                               b.append("\\n");
+                               break;
+                       case '\r':
+                               b.append("\\r");
+                               break;
+                       case '\t':
+                               b.append("\\t");
+                               break;
+                       case '\b':
+                               b.append("\\b");
+                               break;
+                       case '\f':
+                               b.append("\\f");
+                               break;
+                       case '\\':
+                               b.append("\\\\");
+                               break;
+                       default:
+                               b.append(c);
+                       }
+               }
+               return b.toString();
+       }
+
+       public static String unescape(String str) {
+               StringBuilder b = new StringBuilder();
+               for(int i = 0;i<str.length();++i) {
+                       char c = str.charAt(i);
+                       if(c == '\\') {
+                               c = str.charAt(++i);
+                               switch(c) {
+                               case 'n':
+                                       b.append('\n');
+                                       break;
+                               case 'r':
+                                       b.append('\r');
+                                       break;
+                               case 't':
+                                       b.append('\t');
+                                       break;
+                               case 'b':
+                                       b.append('\b');
+                                       break;
+                               case 'f':
+                                       b.append('\f');
+                                       break;
+                               default:
+                                       b.append(c);
+                               }
+                       }
+                       else
+                               b.append(c);
+               }
+               return b.toString();
+       }
+       
+}