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+# This file is NOT licensed under the GPLv3, which is the license for the rest
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+# of YouCompleteMe.
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+#
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+# Here's the license text for this file:
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+#
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+# This is free and unencumbered software released into the public domain.
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+#
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+# Anyone is free to copy, modify, publish, use, compile, sell, or
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+# distribute this software, either in source code form or as a compiled
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+# binary, for any purpose, commercial or non-commercial, and by any
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+# means.
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+#
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+# In jurisdictions that recognize copyright laws, the author or authors
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+# of this software dedicate any and all copyright interest in the
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+# software to the public domain. We make this dedication for the benefit
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+# of the public at large and to the detriment of our heirs and
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+# successors. We intend this dedication to be an overt act of
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+# relinquishment in perpetuity of all present and future rights to this
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+# software under copyright law.
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+#
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+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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+# IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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+# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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+# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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+# OTHER DEALINGS IN THE SOFTWARE.
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+#
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+# For more information, please refer to <http://unlicense.org/>
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+
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+import os
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+import ycm_core
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+
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+# These are the compilation flags that will be used in case there's no
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+# compilation database set (by default, one is not set).
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+# CHANGE THIS LIST OF FLAGS. YES, THIS IS THE DROID YOU HAVE BEEN LOOKING FOR.
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+flags = [
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+'-Wall',
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+'-Wextra',
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+'ggdb',
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+'-std=c99',
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+'-pedantic'
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+]
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+
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+
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+# Set this to the absolute path to the folder (NOT the file!) containing the
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+# compile_commands.json file to use that instead of 'flags'. See here for
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+# more details: http://clang.llvm.org/docs/JSONCompilationDatabase.html
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+#
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+# You can get CMake to generate this file for you by adding:
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+# set( CMAKE_EXPORT_COMPILE_COMMANDS 1 )
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+# to your CMakeLists.txt file.
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+#
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+# Most projects will NOT need to set this to anything; you can just change the
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+# 'flags' list of compilation flags. Notice that YCM itself uses that approach.
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+compilation_database_folder = ''
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+
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+if os.path.exists( compilation_database_folder ):
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+ database = ycm_core.CompilationDatabase( compilation_database_folder )
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+else:
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+ database = None
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+
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+SOURCE_EXTENSIONS = [ '.cpp', '.cxx', '.cc', '.c', '.m', '.mm' ]
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+
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+def DirectoryOfThisScript():
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+ return os.path.dirname( os.path.abspath( __file__ ) )
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+
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+
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+def MakeRelativePathsInFlagsAbsolute( flags, working_directory ):
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+ if not working_directory:
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+ return list( flags )
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+ new_flags = []
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+ make_next_absolute = False
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+ path_flags = [ '-isystem', '-I', '-iquote', '--sysroot=' ]
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+ for flag in flags:
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+ new_flag = flag
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+
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+ if make_next_absolute:
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+ make_next_absolute = False
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+ if not flag.startswith( '/' ):
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+ new_flag = os.path.join( working_directory, flag )
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+
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+ for path_flag in path_flags:
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+ if flag == path_flag:
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+ make_next_absolute = True
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+ break
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+
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+ if flag.startswith( path_flag ):
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+ path = flag[ len( path_flag ): ]
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+ new_flag = path_flag + os.path.join( working_directory, path )
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+ break
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+
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+ if new_flag:
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+ new_flags.append( new_flag )
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+ return new_flags
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+
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+
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+def IsHeaderFile( filename ):
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+ extension = os.path.splitext( filename )[ 1 ]
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+ return extension in [ '.h', '.hxx', '.hpp', '.hh' ]
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+
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+
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+def GetCompilationInfoForFile( filename ):
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+ # The compilation_commands.json file generated by CMake does not have entries
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+ # for header files. So we do our best by asking the db for flags for a
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+ # corresponding source file, if any. If one exists, the flags for that file
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+ # should be good enough.
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+ if IsHeaderFile( filename ):
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+ basename = os.path.splitext( filename )[ 0 ]
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+ for extension in SOURCE_EXTENSIONS:
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+ replacement_file = basename + extension
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+ if os.path.exists( replacement_file ):
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+ compilation_info = database.GetCompilationInfoForFile(
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+ replacement_file )
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+ if compilation_info.compiler_flags_:
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+ return compilation_info
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+ return None
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+ return database.GetCompilationInfoForFile( filename )
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+
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+
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+def FlagsForFile( filename, **kwargs ):
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+ if database:
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+ # Bear in mind that compilation_info.compiler_flags_ does NOT return a
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+ # python list, but a "list-like" StringVec object
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+ compilation_info = GetCompilationInfoForFile( filename )
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+ if not compilation_info:
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+ return None
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+
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+ final_flags = MakeRelativePathsInFlagsAbsolute(
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+ compilation_info.compiler_flags_,
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+ compilation_info.compiler_working_dir_ )
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+
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+ # NOTE: This is just for YouCompleteMe; it's highly likely that your project
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+ # does NOT need to remove the stdlib flag. DO NOT USE THIS IN YOUR
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+ # ycm_extra_conf IF YOU'RE NOT 100% SURE YOU NEED IT.
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+ try:
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+ final_flags.remove( '-stdlib=libc++' )
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+ except ValueError:
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+ pass
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+ else:
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+ relative_to = DirectoryOfThisScript()
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+ final_flags = MakeRelativePathsInFlagsAbsolute( flags, relative_to )
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+
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+ return {
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+ 'flags': final_flags,
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+ 'do_cache': True
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+ }
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