Initial import

git-svn-id: svn://svn.code.sf.net/p/writer2latex/code/trunk@5 f0f2a975-2e09-46c8-9428-3b39399b9f3c

source/java/writer2latex/util/ExportNameCollection.java

@@ -0,0 +1,102 @@
+/************************************************************************
+ *
+ *  ExportNameCollection.java
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License version 2.1, as published by the Free Software Foundation.
+ *
+ *  This library is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public
+ *  License along with this library; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ *  MA  02111-1307  USA
+ *
+ *  Copyright: 2002-2007 by Henrik Just
+ *
+ *  All Rights Reserved.
+ * 
+ *  Version 0.5 (2007-02-25)
+ *
+ */
+
+package writer2latex.util;
+
+import java.util.Enumeration;
+import java.util.Hashtable;
+
+// Collection of export names
+// Used for mapping named collections to simpler names (only A-Z, a-z and 0-9)
+public class ExportNameCollection{
+    private Hashtable exportNames = new Hashtable();
+    private String sPrefix;
+    private boolean bAcceptNumbers;
+	
+    public ExportNameCollection(String sPrefix, boolean b) {
+        this.sPrefix=sPrefix;
+        bAcceptNumbers = b;
+    }
+	
+    public ExportNameCollection(boolean b) {
+        this("",b);
+    }
+	
+    public Enumeration keys() {
+        return exportNames.keys();
+    }
+    
+    public void addName(String sName){
+        if (containsName(sName)) { return; }
+        StringBuffer outbuf=new StringBuffer();
+        SimpleInputBuffer inbuf=new SimpleInputBuffer(sName);
+		
+        // Don't start with a digit
+        if (bAcceptNumbers && inbuf.peekChar()>='0' && inbuf.peekChar()<='9') {
+            outbuf.append('a');
+        }
+
+        char c;
+        // convert numbers to roman numbers and discard unwanted characters
+        while ((c=inbuf.peekChar())!='\0'){
+            if ((c>='a' && c<='z') || (c>='A' && c<='Z')) {
+                outbuf.append(inbuf.getChar());
+            }
+            else if (c>='0' && c<='9'){
+                if (bAcceptNumbers) {
+                    outbuf.append(inbuf.getInteger());
+                }
+                else {
+                    outbuf.append(Misc.int2roman(
+                                  Integer.parseInt(inbuf.getInteger())));
+                }
+            }
+            else {
+                inbuf.getChar(); // ignore this character
+            }
+        }
+        String sExportName=outbuf.toString();
+        // the result may exist in the collecion; add a's at the end
+        while (exportNames.containsValue(sExportName)){
+            sExportName+="a";
+        }
+        exportNames.put(sName,sExportName);
+    }
+    
+    public String getExportName(String sName) {
+        // add the name, if it does not exist
+        if (!containsName(sName)) { addName(sName); }
+        return sPrefix + (String) exportNames.get(sName);
+    }
+
+    public boolean containsName(String sName) {
+        return exportNames.containsKey(sName);
+    }
+    
+    public boolean isEmpty() {
+        return exportNames.size()==0;
+    }
+}