WIP: export_orig: excludes files set in Files-Excluded

Signed-off-by: Shengjing Zhu <i@zhsj.me>

Author: zhsj

gbp/deb/copyright.py

@@ -0,0 +1,62 @@
+# vim: set fileencoding=utf-8 :
+#
+# (C) 2018 Shengjing Zhu <i@zhsj.me>
+#    This program is free software; you can redistribute it and/or modify
+#    it under the terms of the GNU General Public License as published by
+#    the Free Software Foundation; either version 2 of the License, or
+#    (at your option) any later version.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU General Public License for more details.
+#
+#    You should have received a copy of the GNU General Public License
+#    along with this program; if not, please see
+#    <http://www.gnu.org/licenses/>
+"""A Debian Copyright file"""
+import email
+import os
+
+
+class NoCopyrightError(Exception):
+    """No copyright found"""
+    pass
+
+
+class ParseCopyrightError(Exception):
+    """Problem parsing copyright"""
+    pass
+
+
+class Copyright(object):
+    """A Debian copyright"""
+    def __init__(self, contents=None, filename="debian/copyright"):
+        """
+        Parse an existing copyright file.
+
+        @param contents: content of a control file
+        @type contents: C{str}
+        @param filename: name of the control file
+        @type filename: C{str}
+        @return: Copyright object
+        @rtype: C{gbp.deb.conrol.Copyright} object
+        """
+        if contents:
+            copyright = email.message_from_string(contents)
+        else:
+            if not os.access(filename, os.F_OK):
+                raise NoCopyrightError("Copyright file %s doesn't exist" % filename)
+            with open(filename) as f:
+                copyright = email.message_from_file(f)
+
+        if not copyright.items():
+            raise ParseCopyrightError("Empty or invalid copyright file or contents")
+
+        self._copyright = copyright
+        self.filename = filename
+
+    @property
+    def files_excluded(self):
+        """The file list to be excluded"""
+        return self._copyright['Files-Excluded'].split()

gbp/deb/git.py

@@ -331,7 +331,7 @@ def create_upstream_tarball_via_pristine_tar(self, source, output_dir, comp, com
         return True
 
     def create_upstream_tarball_via_git_archive(self, source, output_dir, treeish,
-                                                comp, with_submodules, component=None):
+                                                comp, with_submodules, component=None, excludes=None):
         """
         Create a compressed orig tarball in output_dir using git archive
 
@@ -347,6 +347,8 @@ def create_upstream_tarball_via_git_archive(self, source, output_dir, treeish,
         @type with_submodules: C{bool}
         @param component: component to add to tarball name
         @type component: C{str}
+        @param excludes: files to be excluded from tarball
+        @type excludes: C{list}
 
         Raises GitRepositoryError in case of an error
         """
@@ -355,11 +357,18 @@ def create_upstream_tarball_via_git_archive(self, source, output_dir, treeish,
                               source.upstream_tarball_name(comp.type, component=component))
         prefix = "%s-%s" % (source.name, source.upstream_version)
 
+        old_attributes = self.read_git_dir_attributes()
+        if excludes:
+            attributes = '\n'.join([f + ' export-ignore' for f in excludes])
+            attributes = attributes + '\n' + old_attributes
+            self.write_git_dir_attributes(attributes)
         try:
             if self.has_submodules() and with_submodules:
                 submodules = True
                 self.update_submodules()
             self.archive_comp(treeish, output, prefix, comp, submodules=submodules)
+            if excludes:
+                self.write_git_dir_attributes(old_attributes)
         except Exception as e:
             raise GitRepositoryError("Error creating %s: %s" % (output, e))
         return True

gbp/deb/source.py

@@ -21,6 +21,7 @@
 from gbp.deb.format import DebianSourceFormat
 from gbp.deb.changelog import ChangeLog
 from gbp.deb.control import Control
+from gbp.deb.copyright import Copyright
 
 
 class FileVfs(object):
@@ -57,6 +58,7 @@ def __init__(self, vfs):
         """
         self._changelog = None
         self._control = None
+        self._copyright = None
 
         if isinstance(vfs, str):
             self._vfs = FileVfs(vfs)
@@ -114,6 +116,19 @@ def control(self):
                 raise DebianSourceError('Failed to read control file: %s' % err)
         return self._control
 
+    @property
+    def copyright(self):
+        """
+        Return the L{gbp.deb.copyright}
+        """
+        if not self._copyright:
+            try:
+                with self._vfs.open('debian/copyright', 'rb') as crf:
+                    self._copyright = Copyright(crf.read().decode('utf-8'))
+            except IOError as err:
+                raise DebianSourceError('Failed to read copyright file: %s' % err)
+        return self._copyright
+
     @property
     def sourcepkg(self):
         """

gbp/git/repository.py

@@ -2096,3 +2096,20 @@ def clone(cls, path, remote, depth=0, recursive=False, mirror=False,
                                      % (remote, abspath, err[1]))
         return None
 #}
+
+#{ Attributes in Git_DIR
+    def read_git_dir_attributes(self):
+        path = os.path.join(self.git_dir, 'info/attributes')
+        if not os.path.isfile(path):
+            return ''
+        with open(path, 'r') as f:
+            content = f.read()
+        return content
+
+    def write_git_dir_attributes(self, content):
+        path = os.path.join(self.git_dir, 'info')
+        if not os.path.isdir(path):
+            raise GitRepositoryError("Path %s is not directory" % path)
+        with open(os.path.join(path, 'attributes'), 'w') as f:
+            f.write(content)
+#}

gbp/scripts/export_orig.py

@@ -208,7 +208,15 @@ def git_archive_build_origs(repo, source, output_dir, options):
                                             upstream_tree))
     gbp.log.debug("Building upstream tarball with compression %s" % comp)
     tree = repo.tree_drop_dirs(upstream_tree, options.components) if options.components else upstream_tree
-    repo.create_upstream_tarball_via_git_archive(source, output_dir, tree, comp, options.with_submodules)
+
+    if options.exclude_with_copyright:
+        excludes = source.copyright.files_excluded
+    else:
+        excludes = []
+    gbp.log.debug("Excluding files from archive: %s" % excludes)
+
+    repo.create_upstream_tarball_via_git_archive(source, output_dir, tree, comp,
+                                                 options.with_submodules, excludes=excludes)
     for component in options.components:
         subtree = repo.tree_get_dir(upstream_tree, component)
         if not subtree:
@@ -298,6 +306,9 @@ def build_parser(name):
                                       help="Compression level, default is '%(compression-level)s'")
     orig_group.add_config_file_option("component", action="append", metavar='COMPONENT',
                                       dest="components")
+    orig_group.add_config_file_option(option_name="exclude-with-copyright", action="store_true",
+                                      dest="exclude_with_copyright", default=False,
+                                      help="exclude files in Files-Excluded field set in debian/copyright")
     branch_group.add_config_file_option(option_name="upstream-branch", dest="upstream_branch")
     branch_group.add_boolean_config_file_option(option_name="submodules", dest="with_submodules")
     return parser