Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.databoard / src / org / simantics / databoard / util / StringUtil.java

diff --git a/bundles/org.simantics.databoard/src/org/simantics/databoard/util/StringUtil.java b/bundles/org.simantics.databoard/src/org/simantics/databoard/util/StringUtil.java
new file mode 100644 (file)
index 0000000..dc5b8a9
--- /dev/null
+++ b/bundles/org.simantics.databoard/src/org/simantics/databoard/util/StringUtil.java
@@ -0,0 +1,159 @@
+/*******************************************************************************\r
+ * Copyright (c) 2007 VTT Technical Research Centre of Finland and others.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ *     VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.databoard.util;\r
+\r
+import java.io.IOException;\r
+import java.io.UnsupportedEncodingException;\r
+import java.util.regex.Matcher;\r
+import java.util.regex.Pattern;\r
+import java.util.regex.PatternSyntaxException;\r
+\r
+import org.simantics.databoard.Bindings;\r
+import org.simantics.databoard.Datatypes;\r
+import org.simantics.databoard.binding.Binding;\r
+import org.simantics.databoard.binding.NumberBinding;\r
+import org.simantics.databoard.binding.StringBinding;\r
+import org.simantics.databoard.binding.error.BindingException;\r
+import org.simantics.databoard.binding.error.RuntimeBindingException;\r
+import org.simantics.databoard.binding.mutable.Variant;\r
+import org.simantics.databoard.file.RuntimeIOException;\r
+import org.simantics.databoard.serialization.Serializer;\r
+import org.simantics.databoard.serialization.SerializerConstructionException;\r
+\r
+public class StringUtil {\r
+\r
+       /**\r
+        * Convert variant to string\r
+        * \r
+        * @param v\r
+        * @return string representation\r
+        */\r
+       public static String variantToString(Variant v) {\r
+               try {\r
+                       return (String) Bindings.STR_VARIANT.create(v.getBinding(), v.getValue());\r
+               } catch (BindingException e) {\r
+                       throw new RuntimeBindingException(e);\r
+               }\r
+       }\r
+       \r
+       /**\r
+        * Convert variant's string representation to variant\r
+        * \r
+        * @param str\r
+        * @return variant\r
+        * @throws BindingException\r
+        */\r
+       public static Variant stringToVariant(String str) throws BindingException {\r
+               return (Variant) Bindings.VARIANT.create(Bindings.STR_VARIANT, str);\r
+       }\r
+       \r
+       /**\r
+        * Convert variant to nice user readable string.\r
+        * The string is not convertible back to variant without type information. \r
+        * \r
+        * @param v\r
+        * @return string representation of the variant\r
+        */\r
+       public static String variantToUserReadableString(Variant v) {\r
+               try {\r
+                       Binding binding = v.getBinding();\r
+                       Object value = v.getValue();\r
+                       if ( binding == Bindings.STRING ) return (String) value;\r
+                       if ( binding.type().equals(Datatypes.STRING)) {\r
+                               StringBinding sb = (StringBinding) binding;\r
+                               return sb.getValue(value);\r
+                       }\r
+               \r
+                       if (binding instanceof NumberBinding) {\r
+                               return binding.toString(value);\r
+                       }\r
+                       \r
+                       Serializer s = Bindings.getSerializer( Bindings.VARIANT );\r
+                       byte[] bytes = s.serialize( v );\r
+                       return Base64.encodeBytes(bytes, Base64.URL_SAFE);\r
+               } catch (BindingException e) {\r
+                       // UNEXPECTED\r
+                       throw new RuntimeBindingException(e);\r
+               } catch (SerializerConstructionException e) {\r
+                       throw new RuntimeException(e);\r
+               } catch (IOException e) {\r
+                       throw new RuntimeIOException(e);\r
+               }\r
+       }    \r
+       \r
+       /**\r
+        * Create escaped filename from a string\r
+        * \r
+        * @param name any string\r
+        * @return file compatible string\r
+        */\r
+       public static String escapeToFileName(String name) {\r
+               try {\r
+                       return java.net.URLEncoder.encode(name, "UTF-8");\r
+               } catch (UnsupportedEncodingException e) {\r
+                       // never expected\r
+                       throw new RuntimeException(e);\r
+               }\r
+       }\r
+       \r
+       /**\r
+        * Unescape filename into string \r
+        * \r
+        * @param filename \r
+        * @return any string\r
+        */\r
+       public static String unescapeFileName(String filename) {\r
+               try {\r
+                       return java.net.URLDecoder.decode(filename, "UTF-8");\r
+               } catch (UnsupportedEncodingException e) {\r
+                       // never expected\r
+                       throw new RuntimeException(e);\r
+               }\r
+       }\r
+       \r
+    public static boolean simplePatternMatch(String str, String simplePattern)\r
+    {\r
+        try {\r
+            Pattern ptr = compileSimplePattern(simplePattern);\r
+            Matcher m = ptr.matcher(str);\r
+            return m.matches();\r
+        } catch (PatternSyntaxException pse) {\r
+            return false;\r
+        }\r
+    }\r
+    \r
+    /**\r
+     * Compiles pattern from simple pattern. Simple pattern is normal\r
+     * wild card compare that supports * and ? wild cards.\r
+     * \r
+     * @param patternStr simple pattern\r
+     * @return Regexp pattern\r
+     */\r
+    public static Pattern compileSimplePattern(String patternStr)\r
+    throws PatternSyntaxException\r
+    {\r
+        String str ="";\r
+        for (int i=0; i<patternStr.length(); i++)\r
+        {\r
+            char c = patternStr.charAt(i);\r
+            if ( (c>='a'&&c<='z') || (c>='A'&&c<='Z') || (c>='0'&&c<='9'))\r
+                str += c;\r
+            else if ( c=='?' )\r
+                str += ".?";\r
+            else if ( c=='*' )\r
+                str += ".*";\r
+            else str += "\\"+c;\r
+        }\r
+        return Pattern.compile(str);\r
+    }    \r
+               \r
+}\r
+\r