From 89925960047a8cd62e65647dab6832e28af6bf3b Mon Sep 17 00:00:00 2001
From: Paul Phillips <paulp@improving.org>
Date: Thu, 29 Jul 2010 17:36:23 +0000
Subject: Alterations so the sbt build will run under git...

Alterations so the sbt build will run under git-svn. Review by moix.
---
 build.xml               |  6 +-----
 project/build/SVN.scala | 44 +++++++++++++++++++++++++-------------------
 tools/get-git-svn-rev   |  5 +++++
 tools/git-get-rev       |  5 -----
 4 files changed, 31 insertions(+), 29 deletions(-)
 create mode 100755 tools/get-git-svn-rev
 delete mode 100755 tools/git-get-rev

diff --git a/build.xml b/build.xml
index 62fa2ce01f..d6edf7cab1 100644
--- a/build.xml
+++ b/build.xml
@@ -231,11 +231,7 @@ INITIALISATION
       <equals arg1="${svn.number.svn}" arg2="0" />
       <then>
         <!-- Finding SVN revision, git style -->
-        <exec osfamily="unix" executable="tools/git-get-rev" outputproperty="svn.number.git" failifexecutionfails="false" />
-        <propertyregex
-          property="svn.number" input="${svn.number.git}" select="\1"
-          regexp="\D*?(\d+)"
-          defaultValue="0"/>
+        <exec osfamily="unix" executable="tools/get-git-svn-rev" outputproperty="svn.number" failifexecutionfails="false" />
       </then>
       <else>
         <property name="svn.number" value="${svn.number.svn}" />
diff --git a/project/build/SVN.scala b/project/build/SVN.scala
index 78624f3ba7..e05c949587 100644
--- a/project/build/SVN.scala
+++ b/project/build/SVN.scala
@@ -6,29 +6,35 @@ import scala.util.matching.{Regex}
  * @param root the root of an svn repository
  * @author Moix Grégory
  */
-class SVN(root:Path){
+class SVN(root: Path) {
+  /** Location of tool which parses svn revision in git-svn repository. */
+  val GitSvnRevTool = root / "tools" / "get-git-svn-rev"
 
   /**
    * Gets the revision number of the repository given through the constructor of the class
    * It assumes that svn is installed on the running computer.
    */
-   def getRevisionNumber:Int = {
-     val svnInfo = Process("svn info", root)
-     var result=0
-     val out= new ByteArrayOutputStream
-     val code:Int = svnInfo.#>(out).!
-     if(code == 0) {
-         val r = out.toString
-         val Pattern = new Regex("""Revision: (\d+)""","version")
-         val version = Pattern.findFirstMatchIn(r)
-         version match {
-           case Some(s)=> result=Integer.parseInt(s.group("version"))
-           case None => throw new UnableToGetRevisionNumberException
-         }
-     } else {
-       throw new UnableToGetRevisionNumberException
-     }
-     result
-   }
+  def getRevisionNumber: Int = getSvn orElse getGit getOrElse {
+    throw new UnableToGetRevisionNumberException
+  }
+  def getSvn: Option[Int] = {
+    val svnInfo = Process("svn info", root)
+    val out = new ByteArrayOutputStream
+    val code:Int = svnInfo.#>(out).!
+
+    if (code == 0) {
+      val r = out.toString
+      val Pattern = new Regex("""Revision: (\d+)""", "version")
+      val version = Pattern.findFirstMatchIn(r)
+
+      version map (_.group("version").toInt)
+    }
+    else None
+  }
+
+  def getGit: Option[Int] =
+    try   { Some(Process(GitSvnRevTool.toString, root).!!.trim.toInt) }
+    catch { case _: Exception => None }
 }
+
 class UnableToGetRevisionNumberException extends RuntimeException
\ No newline at end of file
diff --git a/tools/get-git-svn-rev b/tools/get-git-svn-rev
new file mode 100755
index 0000000000..283b4141fe
--- /dev/null
+++ b/tools/get-git-svn-rev
@@ -0,0 +1,5 @@
+#!/bin/sh
+#
+
+GIT_PAGER=cat
+git log -10 | grep git-svn-id | head -1 | sed 's/[^@]*@\([0-9]*\).*/\1/'
\ No newline at end of file
diff --git a/tools/git-get-rev b/tools/git-get-rev
deleted file mode 100755
index 9adda35ca7..0000000000
--- a/tools/git-get-rev
+++ /dev/null
@@ -1,5 +0,0 @@
-#!/bin/sh
-#
-
-GIT_PAGER=cat
-git log -10 | grep git-svn-id | head -1
\ No newline at end of file
-- 
cgit v1.2.3