net.sourceforge.phpeclipse.launching/src/net/sourceforge/phpdt/internal/launching/PHPRuntime.java

   1 package net.sourceforge.phpdt.internal.launching;
   2
   3 import java.io.BufferedOutputStream;
   4 import java.io.File;
   5 import java.io.FileNotFoundException;
   6 import java.io.FileOutputStream;
   7 import java.io.FileReader;
   8 import java.io.IOException;
   9 import java.io.OutputStream;
  10 import java.io.OutputStreamWriter;
  11 import java.io.Reader;
  12 import java.io.StringReader;
  13 import java.io.Writer;
  14 import java.util.ArrayList;
  15 import java.util.Iterator;
  16 import java.util.List;
  17
  18 import javax.xml.parsers.SAXParserFactory;
  19
  20 import org.eclipse.core.runtime.IPath;
  21 import org.eclipse.core.runtime.Path;
  22 import org.xml.sax.Attributes;
  23 import org.xml.sax.ContentHandler;
  24 import org.xml.sax.InputSource;
  25 import org.xml.sax.Locator;
  26 import org.xml.sax.SAXException;
  27 import org.xml.sax.XMLReader;
  28
  29 public class PHPRuntime {
  30         protected static PHPRuntime runtime;
  31
  32         protected List installedInterpreters;
  33         protected PHPInterpreter selectedInterpreter;
  34         protected PHPRuntime() {
  35                 super();
  36         }
  37
  38         public static PHPRuntime getDefault() {
  39                 if (runtime == null) {
  40                         runtime = new PHPRuntime();
  41                 }
  42                 return runtime;
  43         }
  44
  45         public PHPInterpreter getSelectedInterpreter() {
  46                 if (selectedInterpreter == null) {
  47                         loadRuntimeConfiguration();
  48                 }
  49                 return selectedInterpreter;
  50         }
  51
  52         public PHPInterpreter getInterpreter(String name) {
  53                 Iterator interpreters = getInstalledInterpreters().iterator();
  54                 while(interpreters.hasNext()) {
  55                         PHPInterpreter each = (PHPInterpreter) interpreters.next();
  56                         if (each.getName().equals(name))
  57                                 return each;
  58                 }
  59
  60                 return getSelectedInterpreter();
  61         }
  62
  63         public void setSelectedInterpreter(PHPInterpreter anInterpreter) {
  64                 selectedInterpreter = anInterpreter;
  65                 saveRuntimeConfiguration();
  66         }
  67
  68         public void addInstalledInterpreter(PHPInterpreter anInterpreter) {
  69                 getInstalledInterpreters().add(anInterpreter);
  70                 if (getInstalledInterpreters().size() == 1)
  71                         setSelectedInterpreter((PHPInterpreter) getInstalledInterpreters().get(0));
  72
  73                 saveRuntimeConfiguration();
  74         }
  75
  76         public List getInstalledInterpreters() {
  77                 if (installedInterpreters == null)
  78                         loadRuntimeConfiguration();
  79                 return installedInterpreters;
  80         }
  81
  82         public void setInstalledInterpreters(List newInstalledInterpreters) {
  83                 installedInterpreters = newInstalledInterpreters;
  84                 if (installedInterpreters.size() > 0)
  85                         setSelectedInterpreter((PHPInterpreter)installedInterpreters.get(0));
  86                 else
  87                         setSelectedInterpreter(null);
  88         }
  89
  90         protected void saveRuntimeConfiguration() {
  91                 writeXML(getRuntimeConfigurationWriter());
  92         }
  93
  94         protected Writer getRuntimeConfigurationWriter() {
  95                 try {
  96                         OutputStream stream = new BufferedOutputStream(new FileOutputStream(getRuntimeConfigurationFile()));
  97                         return new OutputStreamWriter(stream);
  98                 } catch (FileNotFoundException e) {}
  99
 100                 return null;
 101         }
 102
 103         protected void loadRuntimeConfiguration() {
 104                 installedInterpreters = new ArrayList();
 105                 try {
 106                         File file = getRuntimeConfigurationFile();
 107                         if (file.exists()) {
 108                             XMLReader reader = SAXParserFactory.newInstance().newSAXParser().getXMLReader();
 109                             reader.setContentHandler(getRuntimeConfigurationContentHandler());
 110                             reader.parse(new InputSource(getRuntimeConfigurationReader(file)));
 111                         }
 112                 } catch(Exception e) {
 113                         PHPLaunchingPlugin.log(e);
 114                 }
 115         }
 116
 117         protected Reader getRuntimeConfigurationReader(File file) {
 118                 try {
 119                         return new FileReader(file);
 120                 } catch(FileNotFoundException e) {}
 121                 return new StringReader("");
 122         }
 123
 124         protected void writeXML(Writer writer) {
 125                 try {
 126                         writer.write("<?xml version=\"1.0\" encoding=\"UTF-8\"?><runtimeconfig>");
 127                         Iterator interpretersIterator = installedInterpreters.iterator();
 128                         while (interpretersIterator.hasNext()) {
 129                                 writer.write("<interpreter name=\"");
 130
 131                                 PHPInterpreter entry = (PHPInterpreter) interpretersIterator.next();
 132                                 writer.write(entry.getName());
 133                                 writer.write("\" path=\"");
 134                                 writer.write(entry.getInstallLocation().toString());
 135                                 writer.write("\"");
 136                                 if (entry.equals(selectedInterpreter))
 137                                         writer.write(" selected=\"true\"");
 138
 139                                 writer.write("/>");
 140                         }
 141                         writer.write("</runtimeconfig>");
 142                         writer.flush();
 143                 } catch(IOException e) {
 144                         PHPLaunchingPlugin.log(e);
 145                 }
 146         }
 147
 148         protected ContentHandler getRuntimeConfigurationContentHandler() {
 149                 return new ContentHandler() {
 150                         public void setDocumentLocator(Locator locator) {}
 151                         public void startDocument() throws SAXException {}
 152                         public void endDocument() throws SAXException {}
 153                         public void startPrefixMapping(String prefix, String uri) throws SAXException {}
 154                         public void endPrefixMapping(String prefix) throws SAXException {}
 155                         public void startElement(String namespaceURI, String localName, String qName, Attributes atts) throws SAXException {
 156                                 if ("interpreter".equals(qName)) {
 157                                         String interpreterName = atts.getValue("name");
 158                                         IPath installLocation = new Path(atts.getValue("path"));
 159                                         PHPInterpreter interpreter = new PHPInterpreter(interpreterName, installLocation);
 160                                         installedInterpreters.add(interpreter);
 161                                         if (atts.getValue("selected") != null)
 162                                                 selectedInterpreter = interpreter;
 163                                 }
 164                         }
 165                         public void endElement(String namespaceURI, String localName, String qName) throws SAXException {}
 166                         public void characters(char[] ch, int start, int length) throws SAXException {}
 167                         public void ignorableWhitespace(char[] ch, int start, int length) throws SAXException {}
 168                         public void processingInstruction(String target, String data) throws SAXException {}
 169                         public void skippedEntity(String name) throws SAXException {}
 170                 };
 171         }
 172
 173         protected File getRuntimeConfigurationFile() {
 174                 IPath stateLocation = PHPLaunchingPlugin.getDefault().getStateLocation();
 175                 IPath fileLocation = stateLocation.append("runtimeConfiguration.xml");
 176                 return new File(fileLocation.toOSString());
 177         }
 178 }