libsoundio/.ycm_extra_conf.py
Andrew Kelley c2fa8b4b4d skeleton
2015-06-30 14:04:45 -07:00

127 lines
4.2 KiB
Python

import os
import ycm_core
import subprocess
def DirectoryOfThisScript():
return os.path.dirname( os.path.abspath( __file__ ) )
def ExtractSearchPaths(compiler):
def find_paths(compiler, c_arg):
child = subprocess.Popen([compiler, c_arg, '-E', '-v', '-'], stdin=subprocess.PIPE, stderr=subprocess.PIPE, stdout=subprocess.PIPE)
stderr, stdout = child.communicate(input="")
lines = stdout.split("\n")
begin_token = '#include <...> search starts here:'
end_token = 'End of search list.'
def find_token_index(l, token):
for index, item in enumerate(l):
if item == token:
return index
raise Exception("token not found: %s" % token)
begin_index = find_token_index(lines, begin_token)
end_index = find_token_index(lines, end_token)
return map(lambda x: x.strip(), lines[begin_index+1:end_index])
results = find_paths(compiler, '-xc')
results.extend(find_paths(compiler, '-xc++'))
return results
# 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
#
# You can get CMake to generate this file for you by adding:
# set( CMAKE_EXPORT_COMPILE_COMMANDS 1 )
# to your CMakeLists.txt file.
#
# 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 = os.path.join(DirectoryOfThisScript(), 'build')
compiler = os.environ['CC']
search_paths = ExtractSearchPaths(compiler)
extra_flags = []
for path in search_paths:
extra_flags.append('-I')
extra_flags.append(path)
if os.path.exists( compilation_database_folder ):
database = ycm_core.CompilationDatabase( compilation_database_folder )
else:
raise Exception("compilation database not found")
SOURCE_EXTENSIONS = [ '.cpp', '.cxx', '.cc', '.c', '.m', '.mm' ]
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 ):
# 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_ )
relative_to = DirectoryOfThisScript()
moar_flags = MakeRelativePathsInFlagsAbsolute( extra_flags, relative_to )
final_flags.extend(moar_flags)
return {
'flags': final_flags,
'do_cache': True
}