deps_convert.py

#!/usr/bin/env python
# Copyright 2015 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.

# This is a TEMPORARY script to convert Mojo's DEPS file into a Jiri manifest.
# It is not a general purpose DEPS to manifest converter and intentionally omits
# or simplifies many of gclient's semantics. To run, invoke this script with the
# mojo DEPS file you wish to target as the only argument.
#
#   python deps_convert.py /home/jamesr/mojo/src/DEPS
#
# This is a python script since the DEPS file is a python object. It will go
# away when we stop using gclient for Mojo.

import sys

def print_project_header(f):
    f.write("""<?xml version="1.0" encoding="UTF-8"?>
<!--- DO NOT EDIT BY HAND. This file is generated by deps_convert.py -->
<manifest label="mojo">
""")

def print_mojo_imports(f):
    f.write("""  <imports>
    <import name="buildtools"/>
    <import name="minimal"/>
  </imports>
""")

def print_android_imports(f):
    f.write("""  <imports>
    <import name="mojo"/>
  </imports>
""")


def print_hosts(f):
  f.write("""  <hosts>
    <host name="gerrit"
        location="https://mojo-review.googlesource.com/"/>
    <host name="git"
          location="https://mojo.googlesource.com/">
       <githooks>
         <githook name="commit-msg" path="../git-hooks/add-gerrit-change-id" />
         <githook name="pre-push" path="../git-hooks/run-presubmit-checks" />
      </githooks>
    </host>
  </hosts>
""")

def print_projects_header(f):
    f.write("  <projects>\n")

def print_mojo_projects(f):
  f.write("""    <!-- Mojo repositories -->
    <project name="mojo"
             path="src"
             remote="https://mojo.googlesource.com/mojo"/>
     <project name="depot_tools"
              path="depot_tools"
              remote="https://chromium.googlesource.com/chromium/tools/depot_tools.git"/>
     <project name="mojo-manifest"
              path="mojo-manifest"
              remote="https://mojo.googlesource.com/mojo-manifest"/>
     <project name="asio"
              path="src/third_party/asio"
              remote="https://mojo.googlesource.com/asio"
              remotebranch="mojo"/>
     <project name="lesnet"
              path="lesnet"
              remote="https://mojo.googlesource.com/lesnet"/>
    <!-- End of Mojo repositories -->

    <!-- Entries generated by deps_convert.py -->
""")

def print_projects_footer(f):
    f.write("""    <!-- End of entries generated by deps_convert.py -->
  </projects>""")

def print_hooks_header(f):
    f.write("""  <hooks>
  <!-- Entries generated by deps_convert.py -->
""")

def print_hooks_footer(f):
    f.write("""  <!-- End of entries generated by deps_convert.py -->
  </hooks>""")

def print_manifest_footer(f):
    f.write("""
</manifest>""")

def strip_src_prefix(path):
    return path.split("src/")[-1]

def print_parsed_deps(f, deps):
    for path, remote_and_revision in deps.iteritems():
        remote, revision = remote_and_revision.split('@')
        name = strip_src_prefix(path).replace("/", "_")
        f.write("""    <project name="%s"
             remote="%s"
             path="%s"
             revision="%s"/>
""" % (name, remote, path, revision))

def print_parsed_hooks(f, hooks, android):
    for hook in scope["hooks"]:
        name = hook["name"]
        is_android_hook = name == "android_tools" or name == "sdkextras"
        if android != is_android_hook:
          continue
        action = hook["action"]
        if action[0] == "python":
            script = strip_src_prefix(action[1])
            print_python_action(f, name, "mojo", script, action[2:])
        elif action[0] == "src/tools/download_from_google_storage.py":
            print_download_action(f, name, action[1:])
        else:
            f.write("action %s not understood, action %s" % (name, action))
            sys.exit(1)

def print_python_action(f, name, project, script, args):
    f.write("""    <hook name="%s"
      project="%s"
      interpreter="python"
      path="%s">
""" % (name, project, script))
    for arg in args:
        f.write("      <arg>%s</arg>\n" % arg)
    f.write("    </hook>\n")

def print_download_action(f, name, args):
    print_python_action(f, name, "mojo", "tools/download_from_google_storage.py", args)

scope = {}

def Var(key):
    return scope["vars"][key]

scope["Var"] = Var


def main():
    if len(sys.argv) != 2:
        print "must specify path to DEPS file"
        sys.exit(1)
    with open(sys.argv[1]) as deps_contents:
        d = deps_contents.read()

    exec(d, scope)
    with open("v2/mojo", "w") as f:
        print_project_header(f)
        print_mojo_imports(f)
        print_hosts(f)
        print_projects_header(f)
        print_mojo_projects(f)
        print_parsed_deps(f, scope["deps"])
        print_projects_footer(f)
        print_hooks_header(f)
        print_parsed_hooks(f, scope["hooks"], False)
        print_hooks_footer(f)
        print_manifest_footer(f)

    with open("v2/android", "w") as f:
        print_project_header(f)
        print_android_imports(f)
        print_projects_header(f)
        print_parsed_deps(f, scope["deps_os"]["android"])
        print_projects_footer(f)
        print_hooks_header(f)
        print_parsed_hooks(f, scope["hooks"], True)
        print_hooks_footer(f)
        print_manifest_footer(f)


if __name__ == '__main__':
    sys.exit(main())