michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
michael@0:  * You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: package org.mozilla.gecko.util;
michael@0: 
michael@0: import android.text.TextUtils;
michael@0: import android.util.Log;
michael@0: 
michael@0: import java.io.BufferedWriter;
michael@0: import java.io.IOException;
michael@0: import java.util.Enumeration;
michael@0: import java.util.Hashtable;
michael@0: 
michael@0: public class INISection {
michael@0:     private static final String LOGTAG = "INIParser";
michael@0: 
michael@0:     // default file to read and write to
michael@0:     private String mName = null;
michael@0:     public String getName() { return mName; }
michael@0:     public void setName(String name) { mName = name; }
michael@0: 
michael@0:     // show or hide debug logging
michael@0:     private  boolean mDebug = false;
michael@0: 
michael@0:     // Global properties that aren't inside a section in the file
michael@0:     protected Hashtable<String, Object> mProperties = null;
michael@0: 
michael@0:     // create a parser. The file will not be read until you attempt to
michael@0:     // access sections or properties inside it. At that point its read synchronously
michael@0:     public INISection(String name) {
michael@0:         mName = name;
michael@0:     }
michael@0: 
michael@0:     // log a debug string to the console
michael@0:     protected void debug(String msg) {
michael@0:         if (mDebug) {
michael@0:             Log.i(LOGTAG, msg);
michael@0:         }
michael@0:     }
michael@0:   
michael@0:     // get a global property out of the hash table. will return null if the property doesn't exist
michael@0:     public Object getProperty(String key) {
michael@0:         getProperties(); // ensure that we have parsed the file
michael@0:         return mProperties.get(key);
michael@0:     }
michael@0: 
michael@0:     // get a global property out of the hash table. will return null if the property doesn't exist
michael@0:     public int getIntProperty(String key) {
michael@0:         Object val = getProperty(key);
michael@0:         if (val == null)
michael@0:             return -1;
michael@0: 
michael@0:         return Integer.parseInt(val.toString());
michael@0:     }
michael@0: 
michael@0:     // get a global property out of the hash table. will return null if the property doesn't exist
michael@0:     public String getStringProperty(String key) {
michael@0:         Object val = getProperty(key);
michael@0:         if (val == null)
michael@0:           return null;
michael@0: 
michael@0:         return val.toString();
michael@0:     }
michael@0: 
michael@0:     // get a hashtable of all the global properties in this file
michael@0:     public Hashtable<String, Object> getProperties() {
michael@0:         if (mProperties == null) {
michael@0:             try {
michael@0:                 parse();
michael@0:             } catch (IOException e) {
michael@0:                 debug("Error parsing: " + e);
michael@0:             }
michael@0:         }
michael@0:         return mProperties;
michael@0:     }
michael@0: 
michael@0:     // do nothing for generic sections
michael@0:     protected void parse() throws IOException {
michael@0:         mProperties = new Hashtable<String, Object>();
michael@0:     }
michael@0: 
michael@0:     // set a property. Will erase the property if value = null
michael@0:     public void setProperty(String key, Object value) {
michael@0:         getProperties(); // ensure that we have parsed the file
michael@0:         if (value == null)
michael@0:             removeProperty(key);
michael@0:         else
michael@0:             mProperties.put(key.trim(), value);     
michael@0:     }   
michael@0:  
michael@0:     // remove a property
michael@0:     public void removeProperty(String name) {
michael@0:         // ensure that we have parsed the file
michael@0:         getProperties();
michael@0:         mProperties.remove(name);
michael@0:     }
michael@0: 
michael@0:     public void write(BufferedWriter writer) throws IOException {
michael@0:         if (!TextUtils.isEmpty(mName)) {
michael@0:             writer.write("[" + mName + "]");
michael@0:             writer.newLine();
michael@0:         }
michael@0: 
michael@0:         if (mProperties != null) {
michael@0:             for (Enumeration<String> e = mProperties.keys(); e.hasMoreElements();) {
michael@0:                 String key = e.nextElement();
michael@0:                 writeProperty(writer, key, mProperties.get(key));
michael@0:             }
michael@0:         }
michael@0:         writer.newLine();
michael@0:     }
michael@0: 
michael@0:     // Helper function to write out a property
michael@0:     private void writeProperty(BufferedWriter writer, String key, Object value) {
michael@0:         try {
michael@0:             writer.write(key + "=" + value);
michael@0:             writer.newLine();
michael@0:         } catch (IOException e) {
michael@0:             e.printStackTrace();
michael@0:         }
michael@0:     }
michael@0: }