Bug 1349640 - Upload a mapping for headers in dist/include for the benefit of code coverage builds. r=mshal

MozReview-Commit-ID: 5q9I5S1QOt9

--HG--
extra : rebase_source : e893e9b2ea1ef2cbfe1cfd8e92af71e79f1615a2

python/mozbuild/mozbuild/codecoverage/packager.py

@@ -6,11 +6,37 @@ from __future__ import absolute_import, print_function
 
 import argparse
 import sys
+import json
+import buildconfig
 
-from mozpack.files import FileFinder
-from mozpack.copier import Jarrer
+from mozpack.copier import Jarrer, FileRegistry
+from mozpack.files import FileFinder, GeneratedFile
+from mozpack.manifests import (
+    InstallManifest,
+    UnreadableInstallManifest,
+)
+import mozpack.path as mozpath
 
-def package_gcno_tree(root, output_file):
+def describe_install_manifest(manifest, dest_dir):
+    try:
+        manifest = InstallManifest(manifest)
+    except UnreadableInstallManifest:
+        raise IOError(errno.EINVAL, 'Error parsing manifest file', manifest)
+
+    reg = FileRegistry()
+
+    mapping = {}
+    manifest.populate_registry(reg)
+    for dest_file, src in reg:
+        if hasattr(src, 'path'):
+            dest_path = mozpath.join(dest_dir, dest_file)
+            relsrc_path = mozpath.relpath(src.path, buildconfig.topsrcdir)
+            mapping[dest_path] = relsrc_path
+
+    return mapping
+
+
+def package_coverage_data(root, output_file):
     # XXX JarWriter doesn't support unicode strings, see bug 1056859
     if isinstance(root, unicode):
         root = root.encode('utf-8')
@@ -19,6 +45,15 @@ def package_gcno_tree(root, output_file):
     jarrer = Jarrer(optimize=False)
     for p, f in finder.find("**/*.gcno"):
         jarrer.add(p, f)
+
+    dist_include_manifest = mozpath.join(buildconfig.topobjdir,
+                                         '_build_manifests',
+                                         'install',
+                                         'dist_include')
+    linked_files = describe_install_manifest(dist_include_manifest,
+                                             'dist/include')
+    mapping_file = GeneratedFile(json.dumps(linked_files, sort_keys=True))
+    jarrer.add('linked-files-map.json', mapping_file)
     jarrer.copy(output_file)
 
 
@@ -37,7 +72,7 @@ def cli(args=sys.argv[1:]):
         from buildconfig import topobjdir
         args.root = topobjdir
 
-    return package_gcno_tree(args.root, args.output_file)
+    return package_coverage_data(args.root, args.output_file)
 
 if __name__ == '__main__':
     sys.exit(cli())