1 files changed, 240 insertions, 0 deletions
diff --git a/Tools/Scripts/webkitpy/common/checkout/scm/scm.py b/Tools/Scripts/webkitpy/common/checkout/scm/scm.py
new file mode 100644
index 000000000..b00470bbb
--- /dev/null
+++ b/Tools/Scripts/webkitpy/common/checkout/scm/scm.py
@@ -0,0 +1,240 @@
+# Copyright (c) 2009, Google Inc. All rights reserved.
+# Copyright (c) 2009 Apple Inc. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# Python module for interacting with an SCM system (like SVN or Git)
+
+import logging
+import re
+
+from webkitpy.common.system.deprecated_logging import error, log
+from webkitpy.common.system.executive import Executive, ScriptError
+from webkitpy.common.system.filesystem import FileSystem
+
+
+class CheckoutNeedsUpdate(ScriptError):
+    def __init__(self, script_args, exit_code, output, cwd):
+        ScriptError.__init__(self, script_args=script_args, exit_code=exit_code, output=output, cwd=cwd)
+
+
+# FIXME: Should be moved onto SCM
+def commit_error_handler(error):
+    if re.search("resource out of date", error.output):
+        raise CheckoutNeedsUpdate(script_args=error.script_args, exit_code=error.exit_code, output=error.output, cwd=error.cwd)
+    Executive.default_error_handler(error)
+
+
+class AuthenticationError(Exception):
+    def __init__(self, server_host, prompt_for_password=False):
+        self.server_host = server_host
+        self.prompt_for_password = prompt_for_password
+
+
+
+# SCM methods are expected to return paths relative to self.checkout_root.
+class SCM:
+    def __init__(self, cwd, executive=None, filesystem=None):
+        self.cwd = cwd
+        self.checkout_root = self.find_checkout_root(self.cwd)
+        self.dryrun = False
+        self._executive = executive or Executive()
+        self._filesystem = filesystem or FileSystem()
+
+    # A wrapper used by subclasses to create processes.
+    def run(self, args, cwd=None, input=None, error_handler=None, return_exit_code=False, return_stderr=True, decode_output=True):
+        # FIXME: We should set cwd appropriately.
+        return self._executive.run_command(args,
+                           cwd=cwd,
+                           input=input,
+                           error_handler=error_handler,
+                           return_exit_code=return_exit_code,
+                           return_stderr=return_stderr,
+                           decode_output=decode_output)
+
+    # SCM always returns repository relative path, but sometimes we need
+    # absolute paths to pass to rm, etc.
+    def absolute_path(self, repository_relative_path):
+        return self._filesystem.join(self.checkout_root, repository_relative_path)
+
+    # FIXME: This belongs in Checkout, not SCM.
+    def scripts_directory(self):
+        return self._filesystem.join(self.checkout_root, "Tools", "Scripts")
+
+    # FIXME: This belongs in Checkout, not SCM.
+    def script_path(self, script_name):
+        return self._filesystem.join(self.scripts_directory(), script_name)
+
+    def ensure_clean_working_directory(self, force_clean):
+        if self.working_directory_is_clean():
+            return
+        if not force_clean:
+            print self.run(self.status_command(), error_handler=Executive.ignore_error, cwd=self.checkout_root)
+            raise ScriptError(message="Working directory has modifications, pass --force-clean or --no-clean to continue.")
+        log("Cleaning working directory")
+        self.clean_working_directory()
+
+    def ensure_no_local_commits(self, force):
+        if not self.supports_local_commits():
+            return
+        commits = self.local_commits()
+        if not len(commits):
+            return
+        if not force:
+            error("Working directory has local commits, pass --force-clean to continue.")
+        self.discard_local_commits()
+
+    def run_status_and_extract_filenames(self, status_command, status_regexp):
+        filenames = []
+        # We run with cwd=self.checkout_root so that returned-paths are root-relative.
+        for line in self.run(status_command, cwd=self.checkout_root).splitlines():
+            match = re.search(status_regexp, line)
+            if not match:
+                continue
+            # status = match.group('status')
+            filename = match.group('filename')
+            filenames.append(filename)
+        return filenames
+
+    def strip_r_from_svn_revision(self, svn_revision):
+        match = re.match("^r(?P<svn_revision>\d+)", unicode(svn_revision))
+        if (match):
+            return match.group('svn_revision')
+        return svn_revision
+
+    def svn_revision_from_commit_text(self, commit_text):
+        match = re.search(self.commit_success_regexp(), commit_text, re.MULTILINE)
+        return match.group('svn_revision')
+
+    @staticmethod
+    def _subclass_must_implement():
+        raise NotImplementedError("subclasses must implement")
+
+    @staticmethod
+    def in_working_directory(path):
+        SCM._subclass_must_implement()
+
+    @staticmethod
+    def find_checkout_root(path):
+        SCM._subclass_must_implement()
+
+    @staticmethod
+    def commit_success_regexp():
+        SCM._subclass_must_implement()
+
+    def working_directory_is_clean(self):
+        self._subclass_must_implement()
+
+    def clean_working_directory(self):
+        self._subclass_must_implement()
+
+    def status_command(self):
+        self._subclass_must_implement()
+
+    def add(self, path, return_exit_code=False):
+        self._subclass_must_implement()
+
+    def delete(self, path):
+        self._subclass_must_implement()
+
+    def exists(self, path):
+        self._subclass_must_implement()
+
+    def changed_files(self, git_commit=None):
+        self._subclass_must_implement()
+
+    def changed_files_for_revision(self, revision):
+        self._subclass_must_implement()
+
+    def revisions_changing_file(self, path, limit=5):
+        self._subclass_must_implement()
+
+    def added_files(self):
+        self._subclass_must_implement()
+
+    def conflicted_files(self):
+        self._subclass_must_implement()
+
+    def display_name(self):
+        self._subclass_must_implement()
+
+    def head_svn_revision(self):
+        self._subclass_must_implement()
+
+    def create_patch(self, git_commit=None, changed_files=None):
+        self._subclass_must_implement()
+
+    def committer_email_for_revision(self, revision):
+        self._subclass_must_implement()
+
+    def contents_at_revision(self, path, revision):
+        self._subclass_must_implement()
+
+    def diff_for_revision(self, revision):
+        self._subclass_must_implement()
+
+    def diff_for_file(self, path, log=None):
+        self._subclass_must_implement()
+
+    def show_head(self, path):
+        self._subclass_must_implement()
+
+    def apply_reverse_diff(self, revision):
+        self._subclass_must_implement()
+
+    def revert_files(self, file_paths):
+        self._subclass_must_implement()
+
+    def commit_with_message(self, message, username=None, password=None, git_commit=None, force_squash=False, changed_files=None):
+        self._subclass_must_implement()
+
+    def svn_commit_log(self, svn_revision):
+        self._subclass_must_implement()
+
+    def last_svn_commit_log(self):
+        self._subclass_must_implement()
+
+    def svn_blame(self, path):
+        self._subclass_must_implement()
+
+    # Subclasses must indicate if they support local commits,
+    # but the SCM baseclass will only call local_commits methods when this is true.
+    @staticmethod
+    def supports_local_commits():
+        SCM._subclass_must_implement()
+
+    def remote_merge_base():
+        SCM._subclass_must_implement()
+
+    def commit_locally_with_message(self, message):
+        error("Your source control manager does not support local commits.")
+
+    def discard_local_commits(self):
+        pass
+
+    def local_commits(self):
+        return []