common/buildpackage: fix handling of empty tarball prefix

Previously empty prefix in tarball generation introduced a leading slash
in all filenames in the archive.

Signed-off-by: Markus Lehtonen <markus.lehtonen@linux.intel.com>

1 files changed, 24 insertions, 7 deletions

diff --git a/gbp/scripts/common/buildpackage.py b/gbp/scripts/common/buildpackage.py
index c80a24f..0522cd6 100644
--- a/gbp/scripts/common/buildpackage.py
+++ b/gbp/scripts/common/buildpackage.py
@@ -34,6 +34,22 @@ wc_name = "WC"
 wc_index = ".git/gbp_index"
 
 
+def sanitize_prefix(prefix):
+    """
+    Sanitize the prefix used for generating source archives
+
+    >>> sanitize_prefix('')
+    '/'
+    >>> sanitize_prefix('foo/')
+    'foo/'
+    >>> sanitize_prefix('/foo/bar')
+    'foo/bar/'
+    """
+    if prefix:
+        return prefix.strip('/') + '/'
+    return '/'
+
+
 def git_archive_submodules(repo, treeish, output, prefix, comp_type, comp_level, comp_opts):
     """
     Create tar.gz of an archive with submodules
@@ -43,13 +59,13 @@ def git_archive_submodules(repo, treeish, output, prefix, comp_type, comp_level,
 
     Exception handling is left to the caller.
     """
-
+    prefix = sanitize_prefix(prefix)
     tarfile = output.rsplit('.', 1)[0]
     tempdir = tempfile.mkdtemp()
     submodule_tarfile = os.path.join(tempdir, "submodule.tar")
     try:
         # generate main tarfile
-        repo.archive(format='tar', prefix='%s/' % (prefix),
+        repo.archive(format='tar', prefix=prefix,
                      output=tarfile, treeish=treeish)
 
         # generate each submodule's tarfile and append it to the main archive
@@ -57,7 +73,7 @@ def git_archive_submodules(repo, treeish, output, prefix, comp_type, comp_level,
             tarpath = [subdir, subdir[2:]][subdir.startswith("./")]
 
             gbp.log.debug("Processing submodule %s (%s)" % (subdir, commit[0:8]))
-            repo.archive(format='tar', prefix='%s/%s/' % (prefix, tarpath),
+            repo.archive(format='tar', prefix='%s%s/' % (prefix, tarpath),
                          output=submodule_tarfile, treeish=commit, cwd=subdir)
             CatenateTarArchive(tarfile)(submodule_tarfile)
 
@@ -75,8 +91,9 @@ def git_archive_single(treeish, output, prefix, comp_type, comp_level, comp_opts
 
     Exception handling is left to the caller.
     """
+    prefix = sanitize_prefix(prefix)
     pipe = pipes.Template()
-    pipe.prepend("git archive --format=tar --prefix=%s/ %s" % (prefix, treeish), '.-')
+    pipe.prepend("git archive --format=tar --prefix=%s %s" % (prefix, treeish), '.-')
     pipe.append('%s -c -%s %s' % (comp_type, comp_level, comp_opts),  '--')
     ret = pipe.copy('', output)
     if ret:
@@ -87,10 +104,10 @@ def git_archive_single(treeish, output, prefix, comp_type, comp_level, comp_opts
 def dump_tree(repo, export_dir, treeish, with_submodules):
     "dump a tree to output_dir"
     output_dir = os.path.dirname(export_dir)
-    prefix = os.path.basename(export_dir)
+    prefix = sanitize_prefix(os.path.basename(export_dir))
 
     pipe = pipes.Template()
-    pipe.prepend('git archive --format=tar --prefix=%s/ %s' % (prefix, treeish), '.-')
+    pipe.prepend('git archive --format=tar --prefix=%s %s' % (prefix, treeish), '.-')
     pipe.append('tar -C %s -xf -' % output_dir,  '-.')
     top = os.path.abspath(os.path.curdir)
     try:
@@ -106,7 +123,7 @@ def dump_tree(repo, export_dir, treeish, with_submodules):
                 tarpath = [subdir, subdir[2:]][subdir.startswith("./")]
                 os.chdir(subdir)
                 pipe = pipes.Template()
-                pipe.prepend('git archive --format=tar --prefix=%s/%s/ %s' %
+                pipe.prepend('git archive --format=tar --prefix=%s%s/ %s' %
                              (prefix, tarpath, commit), '.-')
                 pipe.append('tar -C %s -xf -' % output_dir,  '-.')
                 ret = pipe.copy('', '')