1 /* This Source Code Form is subject to the terms of the Mozilla Public
2  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
3  * You can obtain one at http://mozilla.org/MPL/2.0/. */
4 
5 package org.mozilla.gecko.util;
6 
7 import android.text.TextUtils;
8 import android.util.Log;
9 
10 import java.io.BufferedWriter;
11 import java.io.IOException;
12 import java.util.Enumeration;
13 import java.util.Hashtable;
14 
15 public class INISection {
16     private static final String LOGTAG = "INIParser";
17 
18     // default file to read and write to
19     private String mName;
getName()20     public String getName() { return mName; }
setName(String name)21     public void setName(String name) { mName = name; }
22 
23     // show or hide debug logging
24     private  boolean mDebug;
25 
26     // Global properties that aren't inside a section in the file
27     protected Hashtable<String, Object> mProperties;
28 
29     // create a parser. The file will not be read until you attempt to
30     // access sections or properties inside it. At that point its read synchronously
INISection(String name)31     public INISection(String name) {
32         mName = name;
33     }
34 
35     // log a debug string to the console
debug(String msg)36     protected void debug(String msg) {
37         if (mDebug) {
38             Log.i(LOGTAG, msg);
39         }
40     }
41 
42     // get a global property out of the hash table. will return null if the property doesn't exist
getProperty(String key)43     public Object getProperty(String key) {
44         getProperties(); // ensure that we have parsed the file
45         return mProperties.get(key);
46     }
47 
48     // get a global property out of the hash table. will return null if the property doesn't exist
getIntProperty(String key)49     public int getIntProperty(String key) {
50         Object val = getProperty(key);
51         if (val == null)
52             return -1;
53 
54         return Integer.parseInt(val.toString());
55     }
56 
57     // get a global property out of the hash table. will return null if the property doesn't exist
getStringProperty(String key)58     public String getStringProperty(String key) {
59         Object val = getProperty(key);
60         if (val == null)
61           return null;
62 
63         return val.toString();
64     }
65 
66     // get a hashtable of all the global properties in this file
getProperties()67     public Hashtable<String, Object> getProperties() {
68         if (mProperties == null) {
69             try {
70                 parse();
71             } catch (IOException e) {
72                 debug("Error parsing: " + e);
73             }
74         }
75         return mProperties;
76     }
77 
78     // do nothing for generic sections
parse()79     protected void parse() throws IOException {
80         mProperties = new Hashtable<String, Object>();
81     }
82 
83     // set a property. Will erase the property if value = null
setProperty(String key, Object value)84     public void setProperty(String key, Object value) {
85         getProperties(); // ensure that we have parsed the file
86         if (value == null)
87             removeProperty(key);
88         else
89             mProperties.put(key.trim(), value);
90     }
91 
92     // remove a property
removeProperty(String name)93     public void removeProperty(String name) {
94         // ensure that we have parsed the file
95         getProperties();
96         mProperties.remove(name);
97     }
98 
write(BufferedWriter writer)99     public void write(BufferedWriter writer) throws IOException {
100         if (!TextUtils.isEmpty(mName)) {
101             writer.write("[" + mName + "]");
102             writer.newLine();
103         }
104 
105         if (mProperties != null) {
106             for (Enumeration<String> e = mProperties.keys(); e.hasMoreElements();) {
107                 String key = e.nextElement();
108                 writeProperty(writer, key, mProperties.get(key));
109             }
110         }
111         writer.newLine();
112     }
113 
114     // Helper function to write out a property
writeProperty(BufferedWriter writer, String key, Object value)115     private void writeProperty(BufferedWriter writer, String key, Object value) {
116         try {
117             writer.write(key + "=" + value);
118             writer.newLine();
119         } catch (IOException e) {
120             e.printStackTrace();
121         }
122     }
123 }
124