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lib/node_modules/npm/node_modules/node-gyp/gyp/pylib/gyp/_[ Not.Writable ]

File://lib/node_modules/npm/node_modules/node-gyp/gyp/pylib/gyp/xcode_ninja.py

# Copyright (c) 2014 Google Inc. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

"""Xcode-ninja wrapper project file generator.

This updates the data structures passed to the Xcode gyp generator to build
with ninja instead. The Xcode project itself is transformed into a list of
executable targets, each with a build step to build with ninja, and a target
with every source and resource file.  This appears to sidestep some of the
major performance headaches experienced using complex projects and large number
of targets within Xcode.
"""

import errno
import gyp.generator.ninja
import os
import re
import xml.sax.saxutils


def _WriteWorkspace(main_gyp, sources_gyp, params):
  """ Create a workspace to wrap main and sources gyp paths. """
  (build_file_root, build_file_ext) = os.path.splitext(main_gyp)
  workspace_path = build_file_root + '.xcworkspace'
  options = params['options']
  if options.generator_output:
    workspace_path = os.path.join(options.generator_output, workspace_path)
  try:
    os.makedirs(workspace_path)
  except OSError as e:
    if e.errno != errno.EEXIST:
      raise
  output_string = '<?xml version="1.0" encoding="UTF-8"?>\n' + \
                  '<Workspace version = "1.0">\n'
  for gyp_name in [main_gyp, sources_gyp]:
    name = os.path.splitext(os.path.basename(gyp_name))[0] + '.xcodeproj'
    name = xml.sax.saxutils.quoteattr("group:" + name)
    output_string += '  <FileRef location = %s></FileRef>\n' % name
  output_string += '</Workspace>\n'

  workspace_file = os.path.join(workspace_path, "contents.xcworkspacedata")

  try:
    with open(workspace_file, 'r') as input_file:
      input_string = input_file.read()
      if input_string == output_string:
        return
  except IOError:
    # Ignore errors if the file doesn't exist.
    pass

  with open(workspace_file, 'w') as output_file:
    output_file.write(output_string)

def _TargetFromSpec(old_spec, params):
  """ Create fake target for xcode-ninja wrapper. """
  # Determine ninja top level build dir (e.g. /path/to/out).
  ninja_toplevel = None
  jobs = 0
  if params:
    options = params['options']
    ninja_toplevel = \
        os.path.join(options.toplevel_dir,
                     gyp.generator.ninja.ComputeOutputDir(params))
    jobs = params.get('generator_flags', {}).get('xcode_ninja_jobs', 0)

  target_name = old_spec.get('target_name')
  product_name = old_spec.get('product_name', target_name)
  product_extension = old_spec.get('product_extension')

  ninja_target = {}
  ninja_target['target_name'] = target_name
  ninja_target['product_name'] = product_name
  if product_extension:
    ninja_target['product_extension'] = product_extension
  ninja_target['toolset'] = old_spec.get('toolset')
  ninja_target['default_configuration'] = old_spec.get('default_configuration')
  ninja_target['configurations'] = {}

  # Tell Xcode to look in |ninja_toplevel| for build products.
  new_xcode_settings = {}
  if ninja_toplevel:
    new_xcode_settings['CONFIGURATION_BUILD_DIR'] = \
        "%s/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)" % ninja_toplevel

  if 'configurations' in old_spec:
    for config in old_spec['configurations']:
      old_xcode_settings = \
        old_spec['configurations'][config].get('xcode_settings', {})
      if 'IPHONEOS_DEPLOYMENT_TARGET' in old_xcode_settings:
        new_xcode_settings['CODE_SIGNING_REQUIRED'] = "NO"
        new_xcode_settings['IPHONEOS_DEPLOYMENT_TARGET'] = \
            old_xcode_settings['IPHONEOS_DEPLOYMENT_TARGET']
      ninja_target['configurations'][config] = {}
      ninja_target['configurations'][config]['xcode_settings'] = \
          new_xcode_settings

  ninja_target['mac_bundle'] = old_spec.get('mac_bundle', 0)
  ninja_target['ios_app_extension'] = old_spec.get('ios_app_extension', 0)
  ninja_target['ios_watchkit_extension'] = \
      old_spec.get('ios_watchkit_extension', 0)
  ninja_target['ios_watchkit_app'] = old_spec.get('ios_watchkit_app', 0)
  ninja_target['type'] = old_spec['type']
  if ninja_toplevel:
    ninja_target['actions'] = [
      {
        'action_name': 'Compile and copy %s via ninja' % target_name,
        'inputs': [],
        'outputs': [],
        'action': [
          'env',
          'PATH=%s' % os.environ['PATH'],
          'ninja',
          '-C',
          new_xcode_settings['CONFIGURATION_BUILD_DIR'],
          target_name,
        ],
        'message': 'Compile and copy %s via ninja' % target_name,
      },
    ]
    if jobs > 0:
      ninja_target['actions'][0]['action'].extend(('-j', jobs))
  return ninja_target

def IsValidTargetForWrapper(target_extras, executable_target_pattern, spec):
  """Limit targets for Xcode wrapper.

  Xcode sometimes performs poorly with too many targets, so only include
  proper executable targets, with filters to customize.
  Arguments:
    target_extras: Regular expression to always add, matching any target.
    executable_target_pattern: Regular expression limiting executable targets.
    spec: Specifications for target.
  """
  target_name = spec.get('target_name')
  # Always include targets matching target_extras.
  if target_extras is not None and re.search(target_extras, target_name):
    return True

  # Otherwise just show executable targets.
  if spec.get('type', '') == 'executable' and \
     spec.get('product_extension', '') != 'bundle':

    # If there is a filter and the target does not match, exclude the target.
    if executable_target_pattern is not None:
      if not re.search(executable_target_pattern, target_name):
        return False
    return True
  return False

def CreateWrapper(target_list, target_dicts, data, params):
  """Initialize targets for the ninja wrapper.

  This sets up the necessary variables in the targets to generate Xcode projects
  that use ninja as an external builder.
  Arguments:
    target_list: List of target pairs: 'base/base.gyp:base'.
    target_dicts: Dict of target properties keyed on target pair.
    data: Dict of flattened build files keyed on gyp path.
    params: Dict of global options for gyp.
  """
  orig_gyp = params['build_files'][0]
  for gyp_name, gyp_dict in data.items():
    if gyp_name == orig_gyp:
      depth = gyp_dict['_DEPTH']

  # Check for custom main gyp name, otherwise use the default CHROMIUM_GYP_FILE
  # and prepend .ninja before the .gyp extension.
  generator_flags = params.get('generator_flags', {})
  main_gyp = generator_flags.get('xcode_ninja_main_gyp', None)
  if main_gyp is None:
    (build_file_root, build_file_ext) = os.path.splitext(orig_gyp)
    main_gyp = build_file_root + ".ninja" + build_file_ext

  # Create new |target_list|, |target_dicts| and |data| data structures.
  new_target_list = []
  new_target_dicts = {}
  new_data = {}

  # Set base keys needed for |data|.
  new_data[main_gyp] = {}
  new_data[main_gyp]['included_files'] = []
  new_data[main_gyp]['targets'] = []
  new_data[main_gyp]['xcode_settings'] = \
      data[orig_gyp].get('xcode_settings', {})

  # Normally the xcode-ninja generator includes only valid executable targets.
  # If |xcode_ninja_executable_target_pattern| is set, that list is reduced to
  # executable targets that match the pattern. (Default all)
  executable_target_pattern = \
      generator_flags.get('xcode_ninja_executable_target_pattern', None)

  # For including other non-executable targets, add the matching target name
  # to the |xcode_ninja_target_pattern| regular expression. (Default none)
  target_extras = generator_flags.get('xcode_ninja_target_pattern', None)

  for old_qualified_target in target_list:
    spec = target_dicts[old_qualified_target]
    if IsValidTargetForWrapper(target_extras, executable_target_pattern, spec):
      # Add to new_target_list.
      target_name = spec.get('target_name')
      new_target_name = '%s:%s#target' % (main_gyp, target_name)
      new_target_list.append(new_target_name)

      # Add to new_target_dicts.
      new_target_dicts[new_target_name] = _TargetFromSpec(spec, params)

      # Add to new_data.
      for old_target in data[old_qualified_target.split(':')[0]]['targets']:
        if old_target['target_name'] == target_name:
          new_data_target = {}
          new_data_target['target_name'] = old_target['target_name']
          new_data_target['toolset'] = old_target['toolset']
          new_data[main_gyp]['targets'].append(new_data_target)

  # Create sources target.
  sources_target_name = 'sources_for_indexing'
  sources_target = _TargetFromSpec(
    { 'target_name' : sources_target_name,
      'toolset': 'target',
      'default_configuration': 'Default',
      'mac_bundle': '0',
      'type': 'executable'
    }, None)

  # Tell Xcode to look everywhere for headers.
  sources_target['configurations'] = {'Default': { 'include_dirs': [ depth ] } }

  sources = []
  for target, target_dict in target_dicts.items():
    base = os.path.dirname(target)
    files = target_dict.get('sources', []) + \
            target_dict.get('mac_bundle_resources', [])
    for action in target_dict.get('actions', []):
      files.extend(action.get('inputs', []))
    # Remove files starting with $. These are mostly intermediate files for the
    # build system.
    files = [ file for file in files if not file.startswith('$')]

    # Make sources relative to root build file.
    relative_path = os.path.dirname(main_gyp)
    sources += [ os.path.relpath(os.path.join(base, file), relative_path)
                    for file in files ]

  sources_target['sources'] = sorted(set(sources))

  # Put sources_to_index in it's own gyp.
  sources_gyp = \
      os.path.join(os.path.dirname(main_gyp), sources_target_name + ".gyp")
  fully_qualified_target_name = \
      '%s:%s#target' % (sources_gyp, sources_target_name)

  # Add to new_target_list, new_target_dicts and new_data.
  new_target_list.append(fully_qualified_target_name)
  new_target_dicts[fully_qualified_target_name] = sources_target
  new_data_target = {}
  new_data_target['target_name'] = sources_target['target_name']
  new_data_target['_DEPTH'] = depth
  new_data_target['toolset'] = "target"
  new_data[sources_gyp] = {}
  new_data[sources_gyp]['targets'] = []
  new_data[sources_gyp]['included_files'] = []
  new_data[sources_gyp]['xcode_settings'] = \
      data[orig_gyp].get('xcode_settings', {})
  new_data[sources_gyp]['targets'].append(new_data_target)

  # Write workspace to file.
  _WriteWorkspace(main_gyp, sources_gyp, params)
  return (new_target_list, new_target_dicts, new_data)

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