Add --export=WC to export the working copy into export-dir.

Closes: #509138

3 files changed, 25 insertions, 5 deletions

diff --git a/docs/chapters/building.sgml b/docs/chapters/building.sgml
index e81a48e8..4b590988 100644
--- a/docs/chapters/building.sgml
+++ b/docs/chapters/building.sgml
@@ -46,10 +46,12 @@
 &git-buildpackage; <option>--git-export-dir</option>=<replaceable>../build-area</replaceable> <option>--git-export</option>=<replaceable>etch</replaceable>
 &git-buildpackage; <option>--git-export-dir</option>=<replaceable>../build-area</replaceable> <option>--git-export</option>=<replaceable>8caed309653d69b7ab440e3d35abc090eb4c6697</replaceable>
 &git-buildpackage; <option>--git-export-dir</option>=<replaceable>../build-area</replaceable> <option>--git-export</option>=<replaceable>INDEX</replaceable>
+&git-buildpackage; <option>--git-export-dir</option>=<replaceable>../build-area</replaceable> <option>--git-export</option>=<replaceable>WC</replaceable>
 </screen>
     <para>The special argument <replaceable>INDEX</replaceable> exports the
-    state of the current index which can be used to include staged but
-    uncommitted changes in the build.</para>
+    state of the current index which can be used to include staged but uncommitted
+    changes in the build. Whereas the special argument
+    <replaceable>WC</replaceable> exports the current working copy as is.</para>
     <para>If you want to default to build in a separate build area you can
     specify the directory to use in the gbp.conf.
 <programlisting>
diff --git a/docs/manpages/git-buildpackage.sgml b/docs/manpages/git-buildpackage.sgml
index d4e8936a..8ee48b07 100644
--- a/docs/manpages/git-buildpackage.sgml
+++ b/docs/manpages/git-buildpackage.sgml
@@ -189,7 +189,9 @@
 	<listitem> 
 	  <para>Instead of exporting the current branch head, export the
 	  treeish object <replaceable>treeish</replaceable>. The special name
-	  <replaceable>INDEX</replaceable> exports the current index.</para>
+	  <replaceable>INDEX</replaceable> exports the current index whereas
+          the special name <replaceable>WC</replaceable> exports the current working
+          copy as is.</para>
         </listitem>
       </varlistentry>
       <varlistentry>
diff --git a/git-buildpackage b/git-buildpackage
index b3e3bb24..57a2a931 100755
--- a/git-buildpackage
+++ b/git-buildpackage
@@ -25,13 +25,15 @@ import pipes
 import time
 import gbp.deb_utils as du
 from gbp.git_utils import (GitRepositoryError, GitRepository, build_tag)
-from gbp.command_wrappers import (GitTag, Command, RunAtCommand, CommandExecFailed, 
-                                  PristineTar, RemoveTree)
+from gbp.command_wrappers import (GitTag, Command, RunAtCommand, CommandExecFailed,
+                                  PristineTar, RemoveTree, GitAdd)
 from gbp.config import (GbpOptionParser, GbpOptionGroup)
 from gbp.errors import GbpError
 
 # when we want to reference the index in a treeish context we call it:
 index_name = "INDEX"
+# when we want to reference the working copy in treeish context we call it:
+wc_name = "WC"
 
 def git_archive_pipe(prefix, pipe, output, treeish):
     """run the git_archive pipe"""
@@ -106,6 +108,7 @@ def pristine_tar_build_orig(repo, cp, output_dir, options):
     else:
         return False
 
+
 def git_archive_build_orig(repo, cp, output_dir, options):
     """build orig using git-archive"""
     # --upstream-branch was given on the command line, so use this:
@@ -122,6 +125,17 @@ def git_archive_build_orig(repo, cp, output_dir, options):
     if not git_archive(cp, output_dir, upstream_tree):
         raise GbpError, "Cannot create upstream tarball at '%s'" % output_dir
 
+
+def write_wc(repo):
+    """write out the current working copy as a treeish object"""
+    tree = None
+    os.putenv("GIT_INDEX_FILE", ".git/gbp_index")
+    GitAdd()(['-f', '.'])
+    tree = repo.write_tree()
+    os.unsetenv("GIT_INDEX_FILE")
+    return tree
+
+
 def main(argv):
     changelog = 'debian/changelog'
     default_tree = 'HEAD'
@@ -226,6 +240,8 @@ def main(argv):
                 # write a tree of the index if necessary:
                 if options.treeish == index_name:
                     tree = repo.write_tree()
+                elif options.treeish == wc_name:
+                    tree = write_wc(repo)
                 else:
                     tree = options.treeish
                 if not repo.has_treeish(tree):