+# https://github.com/Valloric/ycmd/blob/master/cpp/ycm/.ycm_extra_conf.py
+# https://jonasdevlieghere.com/a-better-youcompleteme-config/
+# https://github.com/arximboldi/dotfiles/blob/master/emacs/.ycm_extra_conf.py
+
import os
+import os.path
+from glob import glob
+import logging
+import ycm_core
+import difflib
+# flags used when no compilation_db is found
+BASE_FLAGS = [
+ '-std=c++1z',
+ '-x', 'c++',
+]
-def FlagsForFile(filename, **kwargs):
- client_data = kwargs['client_data']
- cwd = client_data['getcwd()']
-
- flags = [
- '-Wall',
- # '-Wextra',
- # '-Wshadow',
- # '-Werror',
- # '-Wc++98-compat',
- # '-Wno-long-long',
- # '-Wno-variadic-macros',
- # '-fexceptions',
- # '-DNDEBUG',
- '-std=c++11',
- '-stdlib=libstdc++',
- '-x', 'c++',
- '-I', '.',
- '-I', './include',
+# flags are always added
+EXTRA_FLAGS = [
+ '-Wall',
+ '-Wextra',
+ '-Weverything',
+ '-Wno-c++98-compat',
+ '-Wno-c++98-compat-pedantic',
+ # '-Wshadow',
+ # '-Werror',
+ # '-Wc++98-compat',
+ # '-Wno-long-long',
+ # '-Wno-variadic-macros',
+ # '-fexceptions',
+ # '-DNDEBUG',
+]
+
+SOURCE_EXTENSIONS = [
+ '.cpp',
+ '.cxx',
+ '.cc',
+ '.c',
+ '.m',
+ '.mm'
+]
+
+
+def generate_qt_flags():
+ flags = ['-isystem', '/usr/include/qt/']
+ for p in glob('/usr/include/qt/*/'):
+ flags += ['-isystem', p]
+ return flags
+
+
+def similarity_ratio(s, t):
+ return difflib.SequenceMatcher(a=s.lower(), b=t.lower()).ratio()
+
+
+def find_similar_file_in_database(dbpath, filename):
+ import json
+ logging.info("Trying to find some file close to: " + filename)
+ db = json.load(open(dbpath+ "/compile_commands.json"))
+
+ best_filename = ''
+ best_ratio = 0
+ for entry in db:
+ entry_filename = os.path.normpath(os.path.join(entry["directory"],
+ entry["file"]))
+
+ if filename == entry_filename:
+ logging.info("Found exact match: " + entry_filename)
+ return entry_filename
+
+ basename = os.path.splitext(filename)[0]
+ for extension in SOURCE_EXTENSIONS:
+ replacement_file = basename + extension
+ if entry_filename == replacement_file:
+ logging.info("Found match: " + replacement_file)
+ return entry_filename
+
+ ratio = similarity_ratio(str(filename), str(entry_filename))
+ if ratio > best_ratio:
+ best_filename = entry_filename
+ best_ratio = ratio
+
+ logging.info("Found closest match: " + best_filename)
+ return best_filename
+
+
+def find_nearest_compilation_database(root='.'):
+ dirs = glob(root + '/*/compile_commands.json', recursive=True)
+
+ if len(dirs) == 1:
+ return dirs[0]
+ elif len(dirs) > 1:
+ logging.info("Multiple compilation databases found!")
+ logging.info(dirs)
+ dirs.sort(key=lambda x: os.stat(x).st_mtime, reverse=True)
+ logging.info("Selecting newest: %s" % (dirs[0]))
+ return dirs[0]
+
+ parent = os.path.dirname(os.path.abspath(root))
+ if parent == root:
+ raise RuntimeError("Could not find compile_commands.json")
+ return find_nearest_compilation_database(parent)
+
+
+def find_nearest(path, target):
+ candidates = [
+ os.path.join(path, target),
+ os.path.join(path, 'build', target),
+ os.path.join(path, 'output', target),
]
- relative_to = cwd
- final_flags = MakeRelativePathsInFlagsAbsolute(flags, relative_to)
+ for candidate in candidates:
+ if os.path.isfile(candidate) or os.path.isdir(candidate):
+ logging.info("Found nearest " + target + " at " + candidate)
+ return candidate
+ parent = os.path.dirname(os.path.abspath(path))
+ if parent == path:
+ raise RuntimeError("Could not find " + target)
+ return find_nearest(parent, target)
- return {
- 'flags': final_flags,
- 'do_cache': True
- }
+def flags_for_include(root):
+ try:
+ include_path = find_nearest(root, 'include')
+ flags = []
+ for dirroot, dirnames, filenames in os.walk(include_path):
+ for dir_path in dirnames:
+ real_path = os.path.join(dirroot, dir_path)
+ flags = flags + ["-I" + real_path]
+ return flags
+ except Exception as err:
+ logging.info("Error while looking flags for includes in root: " + root)
+ logging.error(err)
+ return None
-def DirectoryOfThisScript():
- return os.path.dirname(os.path.abspath(__file__))
+def get_compilation_database(root):
+ try:
+ compilation_db_path = find_nearest_compilation_database(root)
+ compilation_db_dir = os.path.dirname(compilation_db_path)
+ logging.info("Set compilation database directory to " + compilation_db_dir)
+ db = ycm_core.CompilationDatabase(compilation_db_dir)
+ if db is None:
+ logging.info("Compilation database file found but unable to load")
+ return None
+ return db
+ except Exception as err:
+ logging.info("Error while trying to find compilation database: " + root)
+ logging.error(err)
+ return None
-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)
+def Settings(**kwargs):
+ if kwargs['language'] != 'cfamily':
+ return {}
- for path_flag in path_flags:
- if flag == path_flag:
- make_next_absolute = True
- break
+ print(kwargs)
+ client_data = kwargs['client_data']
+ root = client_data.get('getcwd()', '.')
+ filename = kwargs['filename']
- if flag.startswith(path_flag):
- path = flag[len(path_flag):]
- new_flag = path_flag + os.path.join(working_directory, path)
- break
+ database = get_compilation_database(root)
+ if database:
+ filename = find_similar_file_in_database(database.database_directory,
+ filename)
+ compilation_info = database.GetCompilationInfoForFile(filename)
+ print(compilation_info)
+ if not compilation_info.compiler_flags_:
+ return {} #TODO use default flags
+ final_flags = list(compilation_info.compiler_flags_)
+ include_path_relative_to_dir = compilation_info.compiler_working_dir_
+ else:
+ final_flags = BASE_FLAGS
+ include_flags = flags_for_include(root)
+ if include_flags:
+ final_flags += include_flags
+ final_flags += generate_qt_flags()
+ final_flags += ['-I', root,
+ '-I', root + '/include']
+ include_path_relative_to_dir = root
- if new_flag:
- new_flags.append(new_flag)
- return new_flags
+ return {
+ 'flags': final_flags + EXTRA_FLAGS,
+ 'include_paths_relative_to_dir': include_path_relative_to_dir,
+ 'override_filename': filename,
+ 'do_cache': True
+ }
repos / dotfiles.git / blobdiff