include svn revision in version properties

bindings/java/build.xml

@@ -111,11 +111,12 @@
 
     <echo>cp ${version.file.srcdir}/${version.file}.in -> ${version.tofile}</echo>
     <copy file="${version.file.srcdir}/${version.file}.in"
-          tofile="${version.tofile}"/>
+          tofile="${version.tofile}" overwrite="true"/>
 
     <replace file="${version.tofile}">
       <replacefilter token="@@BUILD_DATE@@" value="${BUILD_DATE}"/>
       <replacefilter token="@@VERSION_STRING@@" value="${sigar.version}"/>
+      <replacefilter token="@@SCM_REVISION@@" value="${sigar.scmrev}"/>
       <replacefilter token="@@ARCHNAME@@" value="${jni.libarch}"/>
       <replacefilter token="@@ARCHLIB@@" value="${jni.libname.full}"/>
       <replacefilter token="@@BINNAME@@" value="${jni.project.archname}"/>
@@ -127,11 +128,36 @@
     </replace>
   </target>
 
-  <target name="sigar-version">
+  <target name="check-svn">
+    <condition property="svn.available">
+      <and>
+        <available file=".svn" type="dir"/>
+        <available file="svn" type="file">
+          <filepath>
+            <pathelement path="${env.PATH}"/>
+          </filepath>
+        </available>
+     </and>
+    </condition>
+  </target>
+
+  <target name="scm-revision" if="svn.available">
+    <exec executable="svnversion" dir="."
+          outputproperty="sigar.scmrev"
+          failifexecutionfails="false">
+      <arg value="."/>
+    </exec>
+    <echo message="SIGAR svn revision #${sigar.scmrev}"/>
+  </target>
+
+  <target name="sigar-version" depends="check-svn,scm-revision">
     <tstamp>
       <format property="BUILD_DATE" pattern="MM/dd/yyyy hh:mm aa"/>
     </tstamp>
 
+    <!-- in the case of release source builds -->
+    <property name="sigar.scmrev" value="exported"/>
+
     <antcall target="version-file">
        <param name="version.file"
               value="src/org/hyperic/sigar/SigarVersion.java"/>

bindings/java/src/jni/javasigar.c

@@ -276,6 +276,13 @@ JNIEXPORT jstring SIGAR_JNIx(getNativeBuildDate)
     return JENV->NewStringUTF(env, version->build_date);
 }
 
+JNIEXPORT jstring SIGAR_JNIx(getNativeScmRevision)
+(JNIEnv *env, jclass cls)
+{
+    sigar_version_t *version = sigar_version_get();
+    return JENV->NewStringUTF(env, version->scm_revision);
+}
+
 JNIEXPORT void SIGAR_JNIx(open)
 (JNIEnv *env, jobject obj)
 {

bindings/java/src/org/hyperic/sigar/Sigar.java

@@ -55,6 +55,17 @@ public class Sigar implements SigarProxy {
      */
     public static final String NATIVE_VERSION_STRING;
     
+    /**
+     * The scm (svn) revision from which sigar.jar was built.
+     */
+    public static final String SCM_REVISION =
+        SigarVersion.SCM_REVISION;
+
+    /**
+     * The scm (svn) revision from which the sigar native binary was built.
+     */
+    public static final String NATIVE_SCM_REVISION;
+
     /**
      * The date on which sigar.jar was built.
      */
@@ -85,11 +96,13 @@ public class Sigar implements SigarProxy {
     static {
         String nativeVersion = "unknown";
         String nativeBuildDate = "unknown";
+        String nativeScmRevision = "unknown";
 
         try {
             loadLibrary();
             nativeVersion = getNativeVersion();
             nativeBuildDate = getNativeBuildDate();
+            nativeScmRevision = getNativeScmRevision();
             checkVersion(nativeVersion);
         } catch (SigarException e) {
             loadError = e.getMessage();
@@ -104,6 +117,7 @@ public class Sigar implements SigarProxy {
 
         NATIVE_VERSION_STRING = nativeVersion;
         NATIVE_BUILD_DATE = nativeBuildDate;
+        NATIVE_SCM_REVISION = nativeScmRevision;
     }
 
     private static void checkVersion(String nativeVersionString)
@@ -175,6 +189,7 @@ public class Sigar implements SigarProxy {
 
     private static native String getNativeVersion();
     private static native String getNativeBuildDate();
+    private static native String getNativeScmRevision();
 
     /**
      * Allocate and initialize the native Sigar object.

bindings/java/src/org/hyperic/sigar/SigarVersion.java.in

@@ -4,5 +4,7 @@ class SigarVersion {
 
     static final String BUILD_DATE = "@@BUILD_DATE@@";
 
+    static final String SCM_REVISION = "@@SCM_REVISION@@";
+
     static final String VERSION_STRING = "@@VERSION_STRING@@";
 }

bindings/java/src/org/hyperic/sigar/cmd/Version.java

@@ -62,13 +62,15 @@ public class Version extends SigarCommandBase {
         String build =
             "java=" + Sigar.BUILD_DATE +
             ", native=" + Sigar.NATIVE_BUILD_DATE;
-        
+        String scm =
+            "java=" + Sigar.SCM_REVISION +
+            ", native=" + Sigar.NATIVE_SCM_REVISION;
         String archlib =
             SigarLoader.getNativeLibraryName();
 
         os.println("Sigar version......." + version);
         os.println("Build date.........." + build);
-
+        os.println("SVN rev............." + scm);
         String host = getHostName();
         String fqdn;
         Sigar sigar = new Sigar(); 

include/sigar.h

@@ -852,6 +852,7 @@ SIGAR_DECLARE(int) sigar_proc_port_get(sigar_t *sigar,
 
 typedef struct {
     const char *build_date;
+    const char *scm_revision;
     const char *version;
     const char *archname;
     const char *archlib;

src/sigar_version.c.in

@@ -2,6 +2,7 @@
 
 static sigar_version_t sigar_version = {
     "@@BUILD_DATE@@",
+    "@@SCM_REVISION@@",
     "@@VERSION_STRING@@",
     "@@ARCHNAME@@",
     "@@ARCHLIB@@",