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[dotfiles.git] / vim / ycm_extra_conf.py

diff --git a/vim/ycm_extra_conf.py b/vim/ycm_extra_conf.py
index 74d7b8ec7fc75a8b73bf12b1b4ad2a25c839951d..f19fa08c956b37a69a4952f17d97b0c10961f395 100644 (file)
--- a/vim/ycm_extra_conf.py
+++ b/vim/ycm_extra_conf.py
@@ -1,87 +1,185 @@
+# 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

-import shlex
-import subprocess
+import os.path
+from glob import glob
+import logging

 import ycm_core
 import ycm_core

+import difflib

 
 

-def FlagsForFile( filename, **kwargs ):
-  client_data = kwargs['client_data']
-  cwd = client_data['getcwd()']
-  # These are the compilation flags that will be used in case there's no
-  # compilation database set (by default, one is not set).
-  flags = [
-  '-Wall',
-  # '-Wextra',
-  # '-Wshadow',
-  # '-Werror',
-  # '-Wc++98-compat',
-  # '-Wno-long-long',
-  # '-Wno-variadic-macros',
-  # '-fexceptions',
-  # '-DNDEBUG',
-  '-std=c++11',
-  '-stdlib=libc++',
-  '-x', 'c++',
-  '-I', '.',
-  '-I', './include',
-  '-isystem', '/usr/include/c++/4.9.0',
-  '-isystem', '/usr/include/c++/4.9.0/x86_64-unknown-linux-gnu',
-  '-isystem', '/usr/include/c++/4.9.0/backward',
-  '-isystem', '/usr/lib/clang/3.4.1/include'
-  ]
-  flags += rospack()
-  relative_to = cwd
-  final_flags = MakeRelativePathsInFlagsAbsolute( flags, relative_to )
-
-  return {
-    'flags': final_flags,
-    'do_cache': True
-  }
-
-# This function makes it easy to pull in additional flags from rospack
-def rospack():
-  cmd = ['rospack', 'cflags-only-I']
-  try:
-    out = subprocess.Popen(cmd, shell=False, stdout=subprocess.PIPE).stdout
-  except:
-    return []
-  line = out.readline()[:-1].split(" ")
-  includes = []
-  for include in line:
-    if include.startswith(os.path.expanduser('~')):
-      includes += ['-I', include]
-    else:
-      includes += ['-isystem', include]
-  return filter(lambda a: a != ' ', includes)
+# flags used when no compilation_db is found
+BASE_FLAGS = [
+    '-std=c++1z',
+    '-x', 'c++',
+]
+
+# 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

 
 

-def DirectoryOfThisScript():
-  return os.path.dirname( os.path.abspath( __file__ ) )
+        ratio = similarity_ratio(str(filename), str(entry_filename))
+        if ratio > best_ratio:
+            best_filename = entry_filename
+            best_ratio = ratio

 
 

-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
+    logging.info("Found closest match: " + best_filename)
+    return best_filename

 
 

-    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
+def find_nearest_compilation_database(root='.'):
+    dirs = glob(root + '/*/compile_commands.json', recursive=True)

 
 

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

 
 

-    if new_flag:
-      new_flags.append( new_flag )
-  return new_flags
+    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),
+    ]
+    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)
+
+
+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 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 Settings(**kwargs):
+    if kwargs['language'] != 'cfamily':
+        return {}
+
+    print(kwargs)
+    client_data = kwargs['client_data']
+    root = client_data.get('getcwd()', '.')
+    filename = kwargs['filename']
+
+    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

 
 

+    return {
+        'flags': final_flags + EXTRA_FLAGS,
+        'include_paths_relative_to_dir': include_path_relative_to_dir,
+        'override_filename': filename,
+        'do_cache': True
+    }