Script for exporting WPT

third_party/WebKit/Tools/Scripts/webkitpy/w3c/local_wpt.py

Index: third_party/WebKit/Tools/Scripts/webkitpy/w3c/local_wpt.py
diff --git a/third_party/WebKit/Tools/Scripts/webkitpy/w3c/local_wpt.py b/third_party/WebKit/Tools/Scripts/webkitpy/w3c/local_wpt.py
new file mode 100644
index 0000000000000000000000000000000000000000..87249ebb93e395b89edf685d4ecbb779c21ee274
--- /dev/null
+++ b/third_party/WebKit/Tools/Scripts/webkitpy/w3c/local_wpt.py
@@ -0,0 +1,81 @@
+# Copyright 2016 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+WPT_REPO_URL = 'https://chromium.googlesource.com/external/w3c/web-platform-tests.git'
+WPT_TMP_DIR = '/tmp/wpt'
+CR_WPT_DIR = 'third_party/WebKit/LayoutTests/imported/wpt/'
+
+
+class LocalWPT(object):
+
+    def __init__(self, host, path=WPT_TMP_DIR, no_fetch=False):
+        self.host = host
+        self.path = path
+
+        if no_fetch:
+            self.host.print_('## Skipping remote WPT fetch')
+        else:
+            if self.host.filesystem.exists(self.path):
+                self.host.print_('## WPT checkout exists at %s, fetching latest' % (self.path))
+                self.run(['git', 'checkout', 'master'])
+                self.run(['git', 'fetch', '--all'])
+                self.run(['git', 'merge', '--ff-only', 'origin/master'])
+            else:
+                self.host.print_('## Cloning %s into %s' % (WPT_REPO_URL, self.path))
+                self.host.executive.run_command(['git', 'clone', WPT_REPO_URL, self.path])
+                self.host.print_('## Need to set up remote "github"!')
+
+    def run(self, command, **kwargs):
+        """Runs a command in the local WPT directory."""
+        return self.host.executive.run_command(command, cwd=self.path, **kwargs)
+
+    def run_to_list(self, command, **kwargs):
+        return self.run(command, **kwargs).splitlines()
+
+    def most_recent_cr_commit(self):
+        """Goes back in WPT commit history and gets the most recent commit
+        that contains 'Cr-Commit-Position:'
+        """
+        sha = self.run(['git', 'rev-list', 'HEAD', '-n', '1', '--grep=Cr-Commit-Position'])
+        if not sha:
+            return None, None
+
+        sha = sha.strip()
+        position = self.run(['git', 'footers', '--position', sha])

[foolip, 2016/11/02 13:15:33]

Sweet!

+        assert position

[foolip, 2016/11/02 13:15:33]

Put the assert after the strip, because I guess we don't expect a non-empty
string of whitespace?

[jeffcarp, 2016/11/03 22:33:00]

The reason it was before strip was to catch the case if .strip() were to be
called on None, but that makes more sense, and the former error will serve the
same purpose as an assert.

+        position = position.strip()
+        return sha, position
+
+    def clean(self):
+        self.run(['git', 'reset', '--hard', 'HEAD'])
+        self.run(['git', 'clean', '-fdx'])
+        self.run(['git', 'checkout', 'master'])
+
+    def all_branches(self):
+        return self.run_to_list(['git', 'branch', '-a'])
+
+    def create_branch_with_patch(self, branch_name, message, patch):
+        self.clean()
+        all_branches = self.all_branches()
+        remote_branch_name = 'remotes/github/%s' % branch_name
+
+        if branch_name in all_branches:
+            self.host.print_('## Local branch %s already exists, deleting' % branch_name)
+            self.run(['git', 'branch', '-D', branch_name])
+
+        if remote_branch_name in all_branches:
+            self.host.print_('## Remote branch %s already exists, deleting' % branch_name)
+            self.run(['git', 'push', 'github', ':%s' % branch_name])
+
+        self.host.print_('## Creating local branch %s' % branch_name)
+        self.run(['git', 'checkout', '-b', branch_name])
+
+        # Remove Chromium WPT directory prefix
+        patch = patch.replace(CR_WPT_DIR, '')
+
+        # foolip: Could also use git am -p<n> where n is len(CR_WPT_DIR.split(/'))
+        #   or something not off-by-one.
+        self.run(['git', 'apply', '-'], input=patch)
+        self.run(['git', 'commit', '-am', message])
+        self.run(['git', 'push', 'github', branch_name])