text: # Copyright 2015 The Meson development team
  
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  
  #     http://www.apache.org/licenses/LICENSE-2.0
  
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  
  from .. import coredata, build
  from .. import mesonlib
  import os
  
  class PkgConfigModule:
  
      def generate_pkgconfig_file(self, state, libraries, subdirs, name, description, version, filebase,
                                  pub_reqs, priv_reqs, priv_libs):
          coredata = state.environment.get_coredata()
          outdir = state.environment.scratch_dir
          fname = os.path.join(outdir, filebase + '.pc')
          with open(fname, 'w') as ofile:
              ofile.write('prefix=%s\n' % coredata.get_builtin_option('prefix'))
              ofile.write('libdir=${prefix}/%s\n' %
                          coredata.get_builtin_option('libdir'))
              ofile.write('includedir=${prefix}/%s\n\n' %
                          coredata.get_builtin_option('includedir'))
              ofile.write('Name: %s\n' % name)
              if len(description) > 0:
                  ofile.write('Description: %s\n' % description)
              if len(version) > 0:
                  ofile.write('Version: %s\n' % version)
              if len(pub_reqs) > 0:
                  ofile.write('Requires: {}\n'.format(' '.join(pub_reqs)))
              if len(priv_reqs) > 0:
                  ofile.write(
                      'Requires.private: {}\n'.format(' '.join(priv_reqs)))
              if len(priv_libs) > 0:
                  ofile.write(
                      'Libraries.private: {}\n'.format(' '.join(priv_libs)))
              ofile.write('Libs: -L${libdir} ')
              for l in libraries:
                  if l.custom_install_dir:
                      ofile.write('-L${prefix}/%s ' % l.custom_install_dir)
                  ofile.write('-l%s ' % l.name)
              ofile.write('\n')
              ofile.write('CFlags: ')
              for h in subdirs:
                  if h == '.':
                      h = ''
                  ofile.write(os.path.join('-I${includedir}', h))
                  ofile.write(' ')
              ofile.write('\n')
  
      def generate(self, state, args, kwargs):
          if len(args) > 0:
              raise mesonlib.MesonException('Pkgconfig_gen takes no positional arguments.')
          libs = kwargs.get('libraries', [])
          if not isinstance(libs, list):
              libs = [libs]
          processed_libs = []
          for l in libs:
              if hasattr(l, 'held_object'):
                  l = l.held_object
              if not isinstance(l, (build.SharedLibrary, build.StaticLibrary)):
                  raise mesonlib.MesonException('Library argument not a library object.')
              processed_libs.append(l)
          libs = processed_libs
          subdirs = mesonlib.stringlistify(kwargs.get('subdirs', ['.']))
          version = kwargs.get('version', '')
          if not isinstance(version, str):
              raise mesonlib.MesonException('Version must be a string.')
          name = kwargs.get('name', None)
          if not isinstance(name, str):
              raise mesonlib.MesonException('Name not specified.')
          filebase = kwargs.get('filebase', name)
          if not isinstance(filebase, str):
              raise mesonlib.MesonException('Filebase must be a string.')
          description = kwargs.get('description', None)
          if not isinstance(description, str):
              raise mesonlib.MesonException('Description is not a string.')
          pub_reqs = mesonlib.stringlistify(kwargs.get('requires', []))
          priv_reqs = mesonlib.stringlistify(kwargs.get('requires_private', []))
          priv_libs = mesonlib.stringlistify(kwargs.get('libraries_private', []))
          pcfile = filebase + '.pc'
          pkgroot = kwargs.get('install_dir',None)
          if pkgroot is None:
              pkgroot = os.path.join(state.environment.coredata.get_builtin_option('libdir'), 'pkgconfig')
          if not isinstance(pkgroot, str):
              raise mesonlib.MesonException('Install_dir must be a string.')
          self.generate_pkgconfig_file(state, libs, subdirs, name, description, version, filebase,
                                       pub_reqs, priv_reqs, priv_libs)
          return build.Data(False, state.environment.get_scratch_dir(), [pcfile], pkgroot)
  
  def initialize():
      return PkgConfigModule()
  