Copyright: expect value error in spdx export

debsources/app/copyright/templates/copyright/value_error.html

@@ -0,0 +1,20 @@
+{#
+  Copyright (C) 2016  The Debsources developers <info@sources.debian.net>.
+  See the AUTHORS file at the top-level directory of this distribution and at
+  https://anonscm.debian.org/gitweb/?p=qa/debsources.git;a=blob;f=AUTHORS;hb=HEAD
+  License: GNU Affero General Public License, version 3 or above.
+#}
+{% extends name+"/base.html" %}
+
+{% block title %}Error{% endblock %}
+{% block content %}
+<h2>{{ self.title() }}</h2>
+<p>Parsing the debian/copyright file failed due to one or more of the following causes:
+<ul>
+    <li>continued line must begin with " "</li>
+    <li>missing value in one of the required attributes (Files, Copyright, License)</li>
+</ul>
+
+<p><a href="{{ url_for('sources.source', packagename=package, version=version) }}">View raw copyright file</a></p>
+</p> 
+{% endblock %}

debsources/app/copyright/views.py

@@ -22,7 +22,8 @@
 import debsources.statistics as statistics
 from debsources.excepts import (Http404ErrorSuggestions, FileOrFolderNotFound,
                                 InvalidPackageOrVersionError,
-                                Http404MissingCopyright, Http404Error)
+                                Http404MissingCopyright, Http404Error,
+                                CopyrightValueError)
 from ..views import GeneralView, ChecksumView, session, app
 from ..sourcecode import SourceCodeIterator
 from ..pagination import Pagination
@@ -52,13 +53,16 @@ def get_objects(self, packagename, version):
                         code=sourcefile,
                         dump='True',
                         nlines=sourcefile.get_number_of_lines(),)
-        return dict(package=packagename,
-                    version=version,
-                    dump='False',
-                    header=helper.get_copyright_header(c),
-                    files=helper.parse_copyright_paragraphs_for_html_render(
-                        c, "/src/" + packagename + "/" + version + "/"),
-                    licenses=helper.parse_licenses_for_html_render(c))
+        try:
+            return dict(package=packagename,
+                        version=version,
+                        dump='False',
+                        header=helper.get_copyright_header(c),
+                        files=helper.parse_copyright_paragraphs_html_render(
+                            c, "/src/" + packagename + "/" + version + "/"),
+                        licenses=helper.parse_licenses_for_html_render(c))
+        except ValueError as e:
+            raise CopyrightValueError(packagename, version, e.message)
 
 
 class ChecksumLicenseView(ChecksumView):

debsources/excepts.py

@@ -54,3 +54,11 @@ def __init__(self, package, version, par):
         self.version = version
         self.par = par
         super(MissingCopyrightField, self).__init__()
+
+
+class CopyrightValueError(Http404Error):
+    def __init__(self, package, version, error):
+        self.package = package
+        self.version = version
+        self.error = error
+        super(CopyrightValueError, self).__init__()

debsources/license_helper.py

@@ -149,7 +149,7 @@ def get_copyright_header(copyright):
     return copyright.header._RestrictedWrapper__data
 
 
-def parse_copyright_paragraphs_for_html_render(copyright, base_url):
+def parse_copyright_paragraphs_html_render(copyright, base_url):
     """ Returns list of File objects. If `base_url` is provided
         then it creates links to base_url+glob
     """