From 4477c66df67ba8ee412dc03fe9387d83baedd091 Mon Sep 17 00:00:00 2001
From: Alain Magloire <alain@qnx.com>
Date: Tue, 17 Sep 2002 20:33:43 +0000
Subject: [PATCH] Implements a Java version to extract pid from Linux.

---
 core/org.eclipse.cdt.core.linux/.classpath    |  3 +-
 core/org.eclipse.cdt.core.linux/fragment.xml  |  6 ++
 .../cdt/internal/core/linux/ProcessInfo.java  | 45 ++++++++++++
 .../cdt/internal/core/linux/ProcessList.java  | 73 +++++++++++++++++++
 4 files changed, 126 insertions(+), 1 deletion(-)
 create mode 100644 core/org.eclipse.cdt.core.linux/src/org/eclipse/cdt/internal/core/linux/ProcessInfo.java
 create mode 100644 core/org.eclipse.cdt.core.linux/src/org/eclipse/cdt/internal/core/linux/ProcessList.java

diff --git a/core/org.eclipse.cdt.core.linux/.classpath b/core/org.eclipse.cdt.core.linux/.classpath
index 782d615590a..78b54289e10 100644
--- a/core/org.eclipse.cdt.core.linux/.classpath
+++ b/core/org.eclipse.cdt.core.linux/.classpath
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <classpath>
+    <classpathentry kind="src" path="src"/>
     <classpathentry kind="src" path="/org.eclipse.core.resources"/>
     <classpathentry kind="src" path="/org.eclipse.ui"/>
     <classpathentry kind="src" path="/org.eclipse.cdt.core"/>
@@ -11,5 +12,5 @@
     <classpathentry kind="src" path="/org.eclipse.debug.core"/>
     <classpathentry kind="src" path="/org.eclipse.core.boot"/>
     <classpathentry kind="var" path="JRE_LIB" rootpath="JRE_SRCROOT" sourcepath="JRE_SRC"/>
-    <classpathentry kind="output" path=""/>
+    <classpathentry kind="output" path="bin"/>
 </classpath>
diff --git a/core/org.eclipse.cdt.core.linux/fragment.xml b/core/org.eclipse.cdt.core.linux/fragment.xml
index 0f322b53cca..5df310e5c5b 100644
--- a/core/org.eclipse.cdt.core.linux/fragment.xml
+++ b/core/org.eclipse.cdt.core.linux/fragment.xml
@@ -17,4 +17,10 @@
    </requires>
 
 
+   <extension
+         point="org.eclipse.cdt.core.ProcessList">
+      <processList
+            class="org.eclipse.cdt.internal.core.linux.ProcessList">
+      </processList>
+   </extension>
 </fragment>
diff --git a/core/org.eclipse.cdt.core.linux/src/org/eclipse/cdt/internal/core/linux/ProcessInfo.java b/core/org.eclipse.cdt.core.linux/src/org/eclipse/cdt/internal/core/linux/ProcessInfo.java
new file mode 100644
index 00000000000..597c9e408fa
--- /dev/null
+++ b/core/org.eclipse.cdt.core.linux/src/org/eclipse/cdt/internal/core/linux/ProcessInfo.java
@@ -0,0 +1,45 @@
+package org.eclipse.cdt.internal.core.linux;
+
+import org.eclipse.cdt.core.IProcessInfo;
+
+/**
+ * @author alain
+ *
+ * To change this generated comment edit the template variable "typecomment":
+ * Window>Preferences>Java>Templates.
+ * To enable and disable the creation of type comments go to
+ * Window>Preferences>Java>Code Generation.
+ */
+public class ProcessInfo implements IProcessInfo {
+
+	int pid;
+	String name;
+	
+	public ProcessInfo(String pidString, String name) {
+		try {
+			pid = Integer.parseInt(pidString);
+		} catch (NumberFormatException e) {
+		}
+		this.name = name;
+	}
+	
+	public ProcessInfo(int pid, String name) {
+		this.pid = pid;
+		this.name = name;
+	}
+	
+	/**
+	 * @see org.eclipse.cdt.core.IProcessInfo#getName()
+	 */
+	public String getName() {
+		return name;
+	}
+
+	/**
+	 * @see org.eclipse.cdt.core.IProcessInfo#getPid()
+	 */
+	public int getPid() {
+		return pid;
+	}
+
+}
diff --git a/core/org.eclipse.cdt.core.linux/src/org/eclipse/cdt/internal/core/linux/ProcessList.java b/core/org.eclipse.cdt.core.linux/src/org/eclipse/cdt/internal/core/linux/ProcessList.java
new file mode 100644
index 00000000000..9455cd15c89
--- /dev/null
+++ b/core/org.eclipse.cdt.core.linux/src/org/eclipse/cdt/internal/core/linux/ProcessList.java
@@ -0,0 +1,73 @@
+package org.eclipse.cdt.internal.core.linux;
+
+import java.io.File;
+import java.io.FileReader;
+import java.io.FilenameFilter;
+import java.io.IOException;
+
+import org.eclipse.cdt.core.IProcessInfo;
+import org.eclipse.cdt.core.IProcessList;
+
+/**
+ * Insert the type's description here.
+ * @see IProcessList
+ */
+public class ProcessList implements IProcessList {
+
+	ProcessInfo[] empty = new ProcessInfo[0];
+	
+	public ProcessList() {
+	}
+	
+	/**
+	 * Insert the method's description here.
+	 * @see IProcessList#getProcessList
+	 */
+	public IProcessInfo [] getProcessList()  {
+		File proc = new File("/proc");
+		File[] pidFiles = null;
+		String[] pidNames = null;
+		
+		// We are only interrested in the pid so filter the rest out.
+		try {
+			FilenameFilter filter = new FilenameFilter() {
+				public boolean accept(File dir, String name) {
+					boolean isPID = false;
+					try {
+						int pid = Integer.parseInt(name);
+						isPID = true;
+					} catch (NumberFormatException e) {
+					}
+					return isPID;
+				}
+			};
+			pidFiles = proc.listFiles(filter);
+		} catch (SecurityException e) {
+		}
+		
+		ProcessInfo[] processInfo = empty;
+		if (pidFiles != null) {
+			processInfo = new ProcessInfo[pidFiles.length];
+			for (int i = 0; i < pidFiles.length; i++) {
+				File cmdLine = new File(pidFiles[i], "cmdline");
+				StringBuffer line = new StringBuffer();
+				try {
+					FileReader reader = new FileReader(cmdLine);
+					int c;
+					while ((c = reader.read()) > 0) {
+						line.append((char)c);
+					}
+				} catch (IOException e) {
+				}
+				String name = line.toString();
+				if (name.length() == 0) {
+					name = "Unknown";
+				}
+				processInfo[i] = new ProcessInfo(pidFiles[i].getName(), name);
+			}
+		} else {
+			pidFiles = new File[0];
+		}
+		return processInfo;		
+	}
+}