dotfiles/ycm_extra_conf.py

# This file is NOT licensed under the GPLv3, which is the license for the rest
# of YouCompleteMe.
#
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# This is free and unencumbered software released into the public domain.
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# distribute this software, either in source code form or as a compiled
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# means.
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# of this software dedicate any and all copyright interest in the
# software to the public domain. We make this dedication for the benefit
# of the public at large and to the detriment of our heirs and
# successors. We intend this dedication to be an overt act of
# relinquishment in perpetuity of all present and future rights to this
# software under copyright law.
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# For more information, please refer to <http://unlicense.org/>

import os
import ycm_core

# These are the compilation flags that will be used in case there's no
# compilation database set (by default, one is not set).
# CHANGE THIS LIST OF FLAGS. YES, THIS IS THE DROID YOU HAVE BEEN LOOKING FOR.
flags = [
'-Wall', '-DNDEBUG', '-DUSE_CLANG_COMPLETER','-Wno-missing-braces',
# THIS IS IMPORTANT! Without a "-std=<something>" flag, clang won't know which
# language to use when compiling headers. So it will guess. Badly. So C++
# headers will be compiled as C headers. You don't want that so ALWAYS specify
# a "-std=<something>".
# For a C project, you would set this to something like 'c99' instead of
# 'c++1y'.
'-std=c++14',
'-I', '/usr/include/atkmm-1.6',
'-I', '/usr/include/gtk-3.0/unix-print',
'-I', '/usr/include/gdkmm-3.0',
'-I', '/usr/lib/gdkmm-3.0/include',
'-I', '/usr/include/giomm-2.4',
'-I', '/usr/lib/giomm-2.4/include',
'-I', '/usr/include/pangomm-1.4',
'-I', '/usr/lib/pangomm-1.4/include',
'-I', '/usr/include/glibmm-2.4',
'-I', '/usr/lib/glibmm-2.4/include',
'-I', '/usr/include/gtk-3.0',
'-I', '/usr/include/at-spi2-atk/2.0',
'-I', '/usr/include/gtk-3.0',
'-I', '/usr/include/gio-unix-2.0/',
'-I', '/usr/include/cairo',
'-I', '/usr/include/pango-1.0',
'-I', '/usr/include/atk-1.0',
'-I', '/usr/include/cairo',
'-I', '/usr/include/cairomm-1.0',
'-I', '/usr/lib/cairomm-1.0/include',
'-I', '/usr/include/cairo',
'-I', '/usr/include/pixman-1',
'-I', '/usr/include/freetype2',
'-I', '/usr/include/libpng16',
'-I', '/usr/include/harfbuzz',
'-I', '/usr/include/freetype2',
'-I', '/usr/include/harfbuzz',
'-I', '/usr/include/libdrm',
'-I', '/usr/include/libpng16',
'-I', '/usr/include/sigc++-2.0',
'-I', '/usr/lib/sigc++-2.0/include',
'-I', '/usr/include/gdk-pixbuf-2.0',
'-I', '/usr/include/libpng16',
'-I', '/usr/include/glib-2.0',
'-I', '/usr/lib/glib-2.0/include' ,
# '-I', '/lib/emscripten/system/include',
'-I', '/usr/include/qt' ,
'-I', '/usr/include/OGRE' ,
# '-I', '/home/thomas/Prog/C++/MGS/include',
# '-I', '/home/thomas/Prog/C++/Paella/Code/include',
# '-I', '/home/thomas/Prog/C++/controller/include',
'-I', '/opt/android-ndk/platforms/android-21/arch-arm/usr/include',
# ...and the same thing goes for the magic -x option which specifies the
# language that the files to be compiled are written in. This is mostly
# relevant for c++ headers.
# For a C project, you would set this to 'c' instead of 'c++'.
'-x', 'c++'
]

def genPackageConfig(flags, package_name):
    def not_whitespace(string):
        return not (string == '' or string == '\n')
    stream = os.popen("pkg-config --cflags " + package_name)
    includes = stream.read().split(' ')
    includes = filter(not_whitespace, includes)
    return flags + includes

flags = genPackageConfig(flags, 'gtkmm-3.0')
flags = genPackageConfig(flags, 'opencv')

# Set this to the absolute path to the folder (NOT the file!) containing the
# compile_commands.json file to use that instead of 'flags'. See here for
# more details: http://clang.llvm.org/docs/JSONCompilationDatabase.html
#
# Most projects will NOT need to set this to anything; you can just change the
# 'flags' list of compilation flags. Notice that YCM itself uses that approach.
compilation_database_folder = ''

if os.path.exists( compilation_database_folder ):
  database = ycm_core.CompilationDatabase( compilation_database_folder )
else:
  database = None

SOURCE_EXTENSIONS = [ '.cpp', '.cxx', '.cc', '.c', '.m', '.mm' ]

def DirectoryOfThisScript():
  return os.path.dirname( os.path.abspath( __file__ ) )


def MakeRelativePathsInFlagsAbsolute( flags, working_directory ):
  if not working_directory:
    return list( flags )
  new_flags = []
  make_next_absolute = False
  path_flags = [ '-isystem', '-I', '-iquote', '--sysroot=' ]
  for flag in flags:
    new_flag = flag

    if make_next_absolute:
      make_next_absolute = False
      if not flag.startswith( '/' ):
        new_flag = os.path.join( working_directory, flag )

    for path_flag in path_flags:
      if flag == path_flag:
        make_next_absolute = True
        break

      if flag.startswith( path_flag ):
        path = flag[ len( path_flag ): ]
        new_flag = path_flag + os.path.join( working_directory, path )
        break

    if new_flag:
      new_flags.append( new_flag )
  return new_flags


def IsHeaderFile( filename ):
  extension = os.path.splitext( filename )[ 1 ]
  return extension in [ '.h', '.hxx', '.hpp', '.hh' ]


def GetCompilationInfoForFile( filename ):
  # The compilation_commands.json file generated by CMake does not have entries
  # for header files. So we do our best by asking the db for flags for a
  # corresponding source file, if any. If one exists, the flags for that file
  # should be good enough.
  if IsHeaderFile( filename ):
    basename = os.path.splitext( filename )[ 0 ]
    for extension in SOURCE_EXTENSIONS:
      replacement_file = basename + extension
      if os.path.exists( replacement_file ):
        compilation_info = database.GetCompilationInfoForFile(
          replacement_file )
        if compilation_info.compiler_flags_:
          return compilation_info
    return None
  return database.GetCompilationInfoForFile( filename )


def FlagsForFile( filename, **kwargs ):
  if database:
    # Bear in mind that compilation_info.compiler_flags_ does NOT return a
    # python list, but a "list-like" StringVec object
    compilation_info = GetCompilationInfoForFile( filename )
    if not compilation_info:
      return None

    final_flags = MakeRelativePathsInFlagsAbsolute(
      compilation_info.compiler_flags_,
      compilation_info.compiler_working_dir_ )
  else:
    relative_to = DirectoryOfThisScript()
    final_flags = MakeRelativePathsInFlagsAbsolute( flags, relative_to )

  return {
    'flags': final_flags,
    'do_cache': True
  }