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import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.HashMap;
import java.util.Hashtable;
import java.util.Iterator;
import java.util.StringTokenizer;
public class ProfileReader {
/**
*
*/
private String configFilename;
/**
*
*/
private Hashtable sections;
/**
*
*/
private HashMap sectionMap;
/**
*
*/
private HashMap newPairMap;
/**
* Creates a new ProfileReader
*/
public ProfileReader(String inFile) {
this.sections = new Hashtable();
this.sectionMap = new HashMap();
this.newPairMap = new HashMap();
this.configFilename = inFile;
}
public void loadSection() {
BufferedReader fs = null;
try {
String line;
String section = null;
HashMap map = null;
fs = new BufferedReader(new FileReader(this.configFilename));
while ((line = fs.readLine()) != null) {
// check for "[", if not this is a name-value pair
if (line.indexOf("[") == -1) {
String name;
String value;
if (line.trim().length() > 0) {
line = line.trim();
if (line.indexOf("=") > -1) {
name = line.substring(0, line.indexOf("=")).trim();
value = line.substring(line.indexOf("=") + 1,
line.length()).trim();
} else {
name = line.trim();
value = "";
}
map.put(name, value);
}
} else { // this is the section line
// a new section begins
if (map != null) {
if (map.size() != 0) {
this.sectionMap.put(section, map);
}
}
line = line.trim();
section = line.substring(1, line.length() - 1);
map = new HashMap();
}
}
// add the last map
if (map.size() != 0) {
this.sectionMap.put(section, map);
}
} catch (FileNotFoundException f) {
// take care
} catch (IOException i) {
// take care
} catch (NullPointerException e) {
// Section was not found
} finally {
try {
fs.close();
} catch (Exception e) {
// take care
}
}
}
/**
* Load the current objet with the data found in the given stream
* @param aStream the stream that represent the INI file.
* @throws Exception in case of problems.
*/
public void load(InputStream aStream) throws Exception {
if (null == aStream) {
return;
}
BufferedReader bReader = new BufferedReader(new InputStreamReader(aStream));
String line = null;
String sectionName = null;
Hashtable section = null;
while ((line = bReader.readLine()) != null) {
line = line.trim();
// All the data should be in a section
if (null == sectionName) {
if ((!line.startsWith("[")) || (!line.endsWith("]"))) {
throw new Exception("Invalid format: data found outside section");
}
sectionName = line.substring(1, line.length() - 1).trim();
addSection(sectionName);
section = getSection(sectionName);
} else {
if (line.startsWith("[")) {
if (!line.endsWith("]")) {
throw new Exception("Invalid format: no ending ] for section name");
}
sectionName = line.substring(1, line.length() - 1).trim();
addSection(sectionName);
section = getSection(sectionName);
} else {
addLineToSection(line, section);
}
}
}
}
/**
* Return the value of the given key in the given section
* @param aSectionName the name of the section
* @param aKey the key
* @return the value if found or null.
*/
public String getProperty(String aSectionName, String aKey) {
Hashtable section = getSection(aSectionName);
if (null == section) {
return null;
}
return (String) section.get(aKey);
}
/**
* @param _section
* @param _name
* @param _value
*/
public void setProperty(String _section, String _name, String _value) {
HashMap hMap = (HashMap) this.sectionMap.get(_section);
if (hMap == null) {
this.newPairMap = new HashMap();
this.newPairMap.put(_name, _value);
this.sectionMap.put(_section, this.newPairMap);
} else {
hMap.put(_name, _value);
}
}
public void removeProperty(String _section, String _name) {
HashMap hMap = (HashMap) this.sectionMap.get(_section);
hMap.remove(_name);
}
/**
*
* @param aLine
* @param aSection
* @throws java.lang.Exception
*/
private void addLineToSection(String aLine, Hashtable aSection) throws Exception {
if (null == aLine) {
return;
}
if (null == aSection) {
throw new Exception("No section found to add data");
}
aLine = aLine.trim();
// lines that starts with ; are comments
if (aLine.startsWith(";")) {
return;
}
// Avoid the empty lines
if (aLine.length() == 0) {
return;
}
// The format of a line of data is: key = value
StringTokenizer st = new StringTokenizer(aLine, "=");
if (st.countTokens() != 2) {
throw new Exception("Invalid format of data: " + aLine);
}
String key = st.nextToken().trim();
// a key should not contain spaces
for (int index = 0; index < key.length(); index++) {
if (Character.isWhitespace(key.charAt(index))) {
throw new Exception("Invalid format of data: " + aLine);
}
}
String value = st.nextToken().trim();
aSection.put(key, value);
}
/**
* @param aSectionName
* @return
*/
public Hashtable getSection(String aSectionName) {
return (Hashtable) this.sections.get(aSectionName);
}
/**
* @param aSectionName
*/
public void addSection(String aSectionName) {
if (null == aSectionName) {
return;
}
Hashtable section = getSection(aSectionName);
if (null == section) {
section = new Hashtable();
this.sections.put(aSectionName, section);
}
}
/**
* @param outFile
*/
public void saveSection() {
BufferedWriter fw = null;
try {
fw = new BufferedWriter(new FileWriter(this.configFilename));
// Write original file to tempfile until section
try {
Iterator it = this.sectionMap.keySet().iterator();
while (it.hasNext()) {
String section = (String) it.next();
// Write header out
fw.write("[" + section + "]");
fw.newLine();
HashMap map = (HashMap) this.sectionMap.get(section);
Iterator iter = map.keySet().iterator();
while (iter.hasNext()) {
String name = (String) iter.next();
String value = (String) map.get(name);
// Write key-value pair out
fw.write(name + "=" + value);
fw.newLine();
}
}
} catch (NullPointerException a) {
// File might end before section is found
}
} catch (IOException e) {
} finally {
try {
fw.close();
} catch (Exception e) {
}
}
}
} |
BufferReader et InpuStreamReader ?
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