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#!/usr/bin/python
# -*- coding: utf-8 -*-
import argparse
import errno
import os
import subprocess
import sys
import tempfile
import time
def get_gradle_command_and_project_mtime(dir):
"""Find top-project gradlew or fallback to using gradle on sub-project dir.
While iterating the paths, also check mtime on build.gradle files"""
topdir = dir
build_gradle = None
gradlew = None
mtime = -1
while True:
test = os.path.join(topdir, 'build.gradle')
if os.path.exists(test):
if not build_gradle:
build_gradle = test
try:
m = os.path.getmtime(test)
if m > mtime:
mtime = m
except OSError:
pass
test = os.path.join(topdir, 'gradlew')
if os.path.exists(test):
gradlew = test
break
test = os.path.dirname(topdir)
if test == topdir:
break
topdir = test
if gradlew:
cmd = [gradlew, '-p', topdir]
elif build_gradle:
topdir = os.path.dirname(build_gradle)
cmd = ['gradle', '-p', topdir]
else:
topdir = ''
cmd = ['gradle']
return (cmd, mtime, topdir)
def filter_source_files(files):
"""Remove any item not looking like a Java source file."""
return [f for f in files if f.endswith('.java')]
def cleanup_output(tmp, real):
"""Remove any file in tmp that is older than the one in real"""
offset = len(tmp)
if tmp[-1] != '/':
offset = offset + 1
for (dirpath, _, files) in os.walk(tmp):
realpath = os.path.join(real, dirpath[offset:])
for filename in files:
try:
mtime = os.path.getmtime(os.path.join(realpath, filename))
tmp = os.path.join(dirpath, filename)
if os.path.getmtime(tmp) <= mtime:
os.remove(tmp)
except OSError:
pass
def run_javac(encoding, source, target, bootcp, cp, files, output, args,
sourcefile, outdir):
"""Execute javac with the given options."""
command = ['javac']
if encoding:
command.extend(['-encoding', encoding])
if source:
command.extend(['-source', source])
if target:
command.extend(['-target', target])
if bootcp:
command.extend(['-bootclasspath', bootcp])
if outdir:
command.extend(['-d', outdir])
tmp = [outdir]
if output:
tmp.append(output)
if cp:
tmp.extend(cp)
if tmp:
command.extend(['-cp', ':'.join(tmp)])
if os.fork() == 0:
cleanup_output(outdir, output)
sys.exit(0)
else:
if cp:
command.extend(['-cp', ':'.join(cp)])
if output:
command.extend(['-d', output])
command.extend(args)
command.append(sourcefile)
if outdir:
return subprocess.call(command)
else:
with tempfile.NamedTemporaryFile(mode='w') as f:
command.append('@' + f.name)
for source in filter_source_files(files):
f.write(source)
f.write('\n')
f.flush()
return subprocess.call(command)
def file_in_list(needle, files):
"""Find needle in files and if so, return the list without needle.
Otherwise return None."""
if os.path.exists(needle):
for i in range(0, len(files) - 1):
if os.path.samefile(needle, files[i]):
return files[0:i] + files[i + 1:]
return None
def figure_out_java_compilation(sessiondir, sourcefile, tempfile, checkstyle,
force=False):
"""Get options for Java compilation from gradle project and run javac."""
(cmd, mtime, projectdir) = get_gradle_command_and_project_mtime(
os.path.dirname(sourcefile))
output = None
cached = False
if sessiondir != None:
outdir = os.path.join(sessiondir, 'java_output')
try:
os.mkdir(outdir)
except OSError as exc:
if exc.errno != errno.EEXIST or not os.path.isdir(outdir):
outdir = None
pass
cachefile = os.path.join(sessiondir, 'gradle_output')
try:
if not force and os.path.getmtime(cachefile) >= mtime:
with open(cachefile, 'r') as f:
output = f.read()
cached = True
except (OSError, IOError):
pass
else:
outdir = None
if not output:
cmd.extend(['-q', 'flycheckAndroidJava'])
output = subprocess.check_output(cmd, universal_newlines=True)
if sessiondir != None:
try:
with open(cachefile, 'w') as f:
f.write(output)
except IOError:
pass
output = output.split('\n')
data = None
first = None
ret = 0
compiled = False
for line in output:
if line == '***':
if data:
if not first:
first = data
files = file_in_list(sourcefile, data['files'])
if files:
ret = run_javac(data['encoding'], data['source'],
data['target'], data['bootcp'],
data['cp'], files, data['output'],
data['args'], tempfile, outdir)
compiled = True
break
data = {}
elif data != None:
if line.startswith('args='):
data['args'] = line[6:-1].split(', ')
elif line.startswith('encoding='):
data['encoding'] = line[9:]
elif line.startswith('bootcp='):
data['bootcp'] = line[7:]
elif line.startswith('cp='):
data['cp'] = line[3:].split(':')
elif line.startswith('source='):
data['source'] = line[7:]
elif line.startswith('target='):
data['target'] = line[7:]
elif line.startswith('files='):
data['files'] = line[6:].split(':')
elif line.startswith('output='):
data['output'] = line[7:]
if not compiled and data:
if not first:
first = data
files = file_in_list(sourcefile, data['files'])
if files:
ret = run_javac(data['encoding'], data['source'], data['target'],
data['bootcp'], data['cp'], files, data['output'],
data['args'], tempfile, outdir)
compiled = True
if not compiled:
# Probably need to rerun gradle to find group for sourcefile
if cached and os.path.exists(sourcefile):
return figure_out_java_compilation(sessiondir, sourcefile,
tempfile, checkstyle, force=True)
# OK, perhaps file doesn't exist yet or not yet added to gradle,
# whatever, assume the first group is good enough
if first:
ret = run_javac(first['encoding'], first['source'], first['target'],
first['bootcp'], first['cp'], first['files'],
first['output'], first['args'], tempfile, outdir)
compiled = True
if not ret and checkstyle:
cmd = ['java', '-jar',
os.path.abspath(os.path.join(projectdir, checkstyle['jar']))]
if 'config' in checkstyle:
cmd.extend(['-c', checkstyle['config']])
if 'properties' in checkstyle:
cmd.extend(['-p', checkstyle['properties']])
cmd.append(tempfile)
if checkstyle['path']:
cwd = os.path.join(projectdir, checkstyle['path'])
elif len(projectdir):
cwd = projectdir
else:
cwd = None
ret = subprocess.call(cmd, cwd=cwd)
if not ret and not compiled:
print("Source file not in project and project seems empty!")
ret = -1
return ret
def main(argv):
parser = argparse.ArgumentParser()
parser.add_argument('--checkstyle-jar')
parser.add_argument('--checkstyle-path')
parser.add_argument('--checkstyle-config')
parser.add_argument('--checkstyle-properties')
parser.add_argument('sessiondir', nargs='?')
parser.add_argument('sourcefile')
parser.add_argument('tempfile', nargs='?')
args = parser.parse_args(argv[1:])
sourcefile = args.sourcefile
tempfile = args.tempfile or sourcefile
checkstyle = None
if args.checkstyle_jar:
checkstyle = {'jar': args.checkstyle_jar,
'path': args.checkstyle_path,
'config': args.checkstyle_config,
'properties': args.checkstyle_properties}
sourcefile = os.path.abspath(sourcefile)
return figure_out_java_compilation(args.sessiondir, sourcefile, tempfile,
checkstyle)
sys.exit(main(sys.argv))
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