Pull gclient revision 72 and add the gclient unit test.

Review URL: http://codereview.chromium.org/99226

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@14957 0039d316-1c4b-4281-b951-d872f2087c98

README.gclient

+# Copyright 2008-2009, Google Inc.
+
+gclient is a tool for managing a modular checkout of source code
+from multiple source code repositories.  It wraps underlying source
+code management commands to provide support for distributing tree
+updates, status commands, and diffs across multiple checked-out
+working directories.
+
+
+The gclient script is controlled by a ".gclient" file at the top
+of a directory tree which will contain source code from multiple
+locations.  A ".gclient" file is a Python script that defines a list
+of "solutions" with the following format:
+
+    solutions = [
+      { "name"        : "src",
+        "url"         : "svn://svnserver/component/trunk/src",
+        "custom_deps" : {
+          # To use the trunk of a component instead of what's in DEPS:
+          #"component": "https://svnserver/component/trunk/",
+          # To exclude a component from your working copy:
+          #"data/really_large_component": None,
+        }
+      },
+    ]
+
+A "solution" is a collection of component pieces of software that will
+be checked out in a specific directory layout for building together.
+
+Each entry in the "solutions" list is defined by a Python dictionary
+that contains the following items:
+
+    name
+        The name of the directory in which the solution will be
+        checked out.
+
+    url
+        The URL from which this solution will be checked out.
+        gclient expects that the checked-out solution will contain a
+        file named "DEPS" that in turn defines the specific pieces
+        that must be checked out to create the working directory
+        layout for building and developing the solution's software.
+
+    custom_deps
+        A dictionary containing optional custom overrides for entries
+        in the solution's "DEPS" file.  This can be used to have
+        the local working directory *not* check out and update specific
+        components, or to sync the local working-directory copy of a
+        given component to a different specific revision, or a branch,
+        or the head of a tree. It can also be used to append new entries
+        that do not exist in the "DEPS" file.
+
+Within each checked-out solution, gclient expects to find a file
+named "DEPS" which defines the different component pieces of
+software that must be checked out for the solution.  The "DEPS"
+file is a Python script that defines a dictionary named "deps":
+
+    deps = {
+      "src/outside" : "http://outside-server/trunk@1234",
+      "src/component" : "svn://svnserver/component/trunk/src@77829",
+      "src/relative" : "/trunk/src@77829",
+    }
+
+Each item in the "deps" dictionary consists of a key-value pair.
+The key is the directory into which the component will be checked
+out, relative to the directory containing the ".gclient" file.
+The value is the URL from which that directory will be checked out.
+If there is no address scheme (that is, no "http:" or "svn:" prefix),
+then the value must begin with a slash and is treated relative to the
+root of the solution's repository.
+
+The URL typically contains a specific revision or change number (as
+appropriate for the underlying SCM system) to "freeze" the external
+software at a specific, known state.  Alternatively, if there is no
+revision or change number, the URL will track the latest changes on the
+specific trunk or branch.

gclient.py

@@ -78,18 +78,6 @@ import urlparse
 import xml.dom.minidom
 import urllib
 
-def getText(nodelist):
-  """
-  Return the concatenated text for the children of a list of DOM nodes.
-  """
-  rc = []
-  for node in nodelist:
-    if node.nodeType == node.TEXT_NODE:
-      rc.append(node.data)
-    else:
-      rc.append(getText(node.childNodes))
-  return ''.join(rc)
-
 
 SVN_COMMAND = "svn"
 
@@ -271,6 +259,26 @@ solutions = [
 ## Generic utils
 
 
+def getText(nodelist):
+  """
+  Return the concatenated text for the children of a list of DOM nodes.
+  """
+  rc = []
+  for node in nodelist:
+    if node.nodeType == node.TEXT_NODE:
+      rc.append(node.data)
+    else:
+      rc.append(getText(node.childNodes))
+  return ''.join(rc)
+
+
+def ParseXML(output):
+  try:
+    return xml.dom.minidom.parseString(output)
+  except xml.parsers.expat.ExpatError:
+    return None
+
+
 class Error(Exception):
   """gclient exception class."""
   pass
@@ -584,20 +592,15 @@ def CaptureSVNHeadRevision(options, url):
 
 
 class FileStatus:
-  def __init__(self, path, text_status, props, locked, history, switched,
-               repo_locked, out_of_date):
-    self.path = path.strip()
+  def __init__(self, path, text_status, props, history):
+    self.path = path
     self.text_status = text_status
     self.props = props
-    self.locked = locked
     self.history = history
-    self.switched = switched
-    self.repo_locked = repo_locked
-    self.out_of_date = out_of_date
 
   def __str__(self):
-    return (self.text_status + self.props + self.locked + self.history +
-            self.switched + self.repo_locked + self.out_of_date +
+    # Emulate svn status 1.5 output.
+    return (self.text_status + self.props + ' ' + self.history + ' ' +
             self.path)
 
 
@@ -608,18 +611,53 @@ def CaptureSVNStatus(options, path):
     path: The directory to run svn status.
 
   Returns:
-    An array of FileStatus corresponding to the output of 'svn status'
-  """
-  info = CaptureSVN(options, ["status"], path)
-  result = []
-  if not info:
-    return result
-  for line in info.splitlines():
-    if line:
-      new_item = FileStatus(line[7:], line[0:1], line[1:2], line[2:3],
-                            line[3:4], line[4:5], line[5:6], line[6:7])
-      result.append(new_item)
-  return result
+    An array of FileStatus corresponding to the emulated output of 'svn status'
+    version 1.5."""
+  dom = ParseXML(CaptureSVN(options, ["status", "--xml"], path))
+  results = []
+  if dom:
+    # /status/target/entry/(wc-status|commit|author|date)
+    for target in dom.getElementsByTagName('target'):
+      base_path = target.getAttribute('path')
+      for entry in target.getElementsByTagName('entry'):
+        file = entry.getAttribute('path')
+        wc_status = entry.getElementsByTagName('wc-status')
+        assert len(wc_status) == 1
+        # Emulate svn 1.5 status ouput...
+        statuses = [' ' for i in range(7)]
+        # Col 0
+        xml_item_status = wc_status[0].getAttribute('item')
+        if xml_item_status == 'unversioned':
+          statuses[0] = '?'
+        elif xml_item_status == 'modified':
+          statuses[0] = 'M'
+        elif xml_item_status == 'added':
+          statuses[0] = 'A'
+        elif xml_item_status == 'conflicted':
+          statuses[0] = 'C'
+        elif not xml_item_status:
+          pass
+        else:
+          raise Exception('Unknown item status "%s"; please implement me!' %
+                          xml_item_status)
+        # Col 1
+        xml_props_status = wc_status[0].getAttribute('props')
+        if xml_props_status == 'modified':
+          statuses[1] = 'M'
+        elif xml_props_status == 'conflicted':
+          statuses[1] = 'C'
+        elif (not xml_props_status or xml_props_status == 'none' or
+              xml_props_status == 'normal'):
+          pass
+        else:
+          raise Exception('Unknown props status "%s"; please implement me!' %
+                          xml_props_status)
+        # Col 3
+        if wc_status[0].getAttribute('copied') == 'true':
+          statuses[3] = '+'
+        item = FileStatus(file, statuses[0], statuses[1], statuses[3])
+        results.append(item)
+  return results
 
 
 ### SCM abstraction layer
@@ -638,10 +676,10 @@ class SCMWrapper(object):
     self.url = url
     self._root_dir = root_dir
     if self._root_dir:
-      self._root_dir = self._root_dir.replace('/', os.sep).strip()
+      self._root_dir = self._root_dir.replace('/', os.sep)
     self.relpath = relpath
     if self.relpath:
-      self.relpath = self.relpath.replace('/', os.sep).strip()
+      self.relpath = self.relpath.replace('/', os.sep)
 
   def FullUrlForRelativeUrl(self, url):
     # Find the forth '/' and strip from there. A bit hackish.

tests/README.gclient_test

+# Copyright 2008-2009, Google Inc.
+
+To run the gclient's unit tests, you need to checkout pymox and install it:
+svn co http://pymox.googlecode.com/svn/trunk pymox
+cd pymox
+python setup.py install