def gen_classpath()

in tools/eclipse/project.py [0:0]

• 72 lines of code
• 26 McCabe index (conditional complexity)

def gen_classpath(ext):
  def make_classpath():
    impl = xml.dom.minidom.getDOMImplementation()
    return impl.createDocument(None, 'classpath', None)

  def classpathentry(kind, path, src=None, out=None, exported=None):
    e = doc.createElement('classpathentry')
    e.setAttribute('kind', kind)
    # TODO(davido): Remove this and other exclude BUILD files hack
    # when this Bazel bug is fixed:
    # https://github.com/bazelbuild/bazel/issues/1083
    if kind == 'src':
      e.setAttribute('excluding', '**/BUILD')
    e.setAttribute('path', path)
    if src:
      e.setAttribute('sourcepath', src)
    if out:
      e.setAttribute('output', out)
    if exported:
      e.setAttribute('exported', 'true')
    doc.documentElement.appendChild(e)

  doc = make_classpath()
  src = set()
  lib = set()

  java_library = re.compile('bazel-out/(?:.*)-fastbuild/bin(.*)/[^/]+[.]jar$')
  srcs = re.compile('(.*/external/[^/]+)/jar/(.*)[.]jar')
  for p in _query_classpath():
    m = java_library.match(p)
    if m:
      src.add(m.group(1).lstrip('/'))
    else:
      if ext is not None and p.startswith("external"):
        p = os.path.join(ext, p)
        lib.add(p)

  src_paths = {}
  for s in sorted(src):
    out = None

    if s.startswith('lib/'):
      out = 'eclipse-out/lib'

    p = os.path.join(s, 'java')
    if os.path.exists(p):
      classpathentry('src', p, out=out)
      continue

    for env in ['main', 'test', 'java', 'javatests']:
      o = None
      if out:
        o = out + '/' + env
      elif env == 'test' or env == 'javatests':
        o = 'eclipse-out/test'

      if s.startswith(env + '/'):
        src_paths[env] = o
        continue

      for srctype in ['java', 'resources']:
        p = os.path.join(s, 'src', env, srctype)
        if os.path.exists(p):
          src_paths[p] = o

  for s in src_paths:
    classpathentry('src', s, out=src_paths[s])

  for libs in [lib]:
    for j in sorted(libs):
      if excluded(j):
        continue
      s = None
      m = srcs.match(j)
      if m:
        prefix = m.group(1)
        suffix = m.group(2)
        p = os.path.join(prefix, "src", "%s-src.jar" % suffix)
        if os.path.exists(p):
          s = p
      classpathentry('lib', j, s)

  classpathentry('con', JRE)
  classpathentry('output', 'eclipse-out/classes')

  p = os.path.join(ROOT, '.classpath')
  with open(p, 'w') as fd:
    doc.writexml(fd, addindent='\t', newl='\n', encoding='UTF-8')