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import os
import string
import re
import subprocess
import ycm_core
def IsHeaderFile( filename ):
extension = os.path.splitext( filename )[ 1 ]
return extension in [ '.h', '.hxx', '.hpp', '.hh' ]
def ContainsJamfile(path):
for file in os.listdir(path):
if file == 'Jamfile.jam':
return True
return False
def FindOwningJamfile(filename):
path = os.path.dirname(filename)
while (not ContainsJamfile(path)) or (path == '/'):
path = os.path.dirname(path)
return path
def ExpandBackTicks(line):
bts = re.search("^([^`]*)`([^`]*)`(.*)$", line)
if bts and (len(bts.groups()) >= 3):
p = subprocess.Popen(bts.group(2), shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
line = bts.group(1) + p.stdout.read() + bts.group(3);
return ExpandBackTicks(line)
return line
def GetBJamCommandFlags(rtarget, target):
flags = []
p = subprocess.Popen(['b2', '-and2', rtarget], stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
for line in p.stdout.readlines():
if string.lstrip(line).startswith('"g++"') and string.find(line, '"'+target+'"') > 0:
flags = []
line = ExpandBackTicks(line)
args = string.split(line)
idx = 1
while args[idx] != '-c':
flags.append(args[idx])
idx += 1
return flags
def ApplyFlagQuirks(flags):
newflags = []
for flag in flags:
qs = re.search('([^"]+)"([^"]*)"$', flag)
if qs:
flag = qs.group(1)
value = qs.group(2)
newflags.append(flag)
if (flag == '-I'):
newflags.append(os.path.abspath(value))
else:
newflags.append(value)
elif flag != '-Werror':
newflags.append(flag)
return newflags
def GuessAnIncluder(filename):
cpp = str.replace(filename, ".h", ".cpp")
if os.path.exists(cpp):
return cpp
filename = os.path.abspath(filename)
basename = os.path.basename(filename)
dirname = os.path.dirname(filename)
p = subprocess.Popen(['grep', '-Ilrw', basename, dirname], stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
f = p.stdout.readlines()[0].strip()
if IsHeaderFile(f):
return GuessAnIncluder(f)
return f
def FlagsForFile( filename, **kwargs ):
if (IsHeaderFile(filename)):
filename = GuessAnIncluder(filename)
filename = os.path.abspath(filename)
rootDir = FindOwningJamfile(filename)
target = str.replace(filename, rootDir + "/", "")
rtarget = str.replace(target, ".cpp", ".o")
cwd = os.getcwd()
os.chdir(rootDir)
flags = GetBJamCommandFlags(rtarget, target)
flags = ApplyFlagQuirks(flags)
# Fall back to . for finding precompiled headers
flags.append("-x")
flags.append("c++");
flags.append("-I")
flags.append(os.path.dirname(filename))
os.chdir(cwd)
return {
'flags': flags,
'do_cache': False
}
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