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#!/usr/bin/python
# -*- coding: utf-8 -*-
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:
cmd = ['gradle', '-p', os.path.dirname(build_gradle)]
else:
cmd = ['gradle']
return (cmd, mtime)
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 run_javac(encoding, source, target, bootcp, cp, files, output, args,
sourcefile):
"""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 cp:
command.extend(['-cp', ':'.join(cp)])
if output:
command.extend(['-d', output])
command.extend(args)
command.append(sourcefile)
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."""
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):
"""Get options for Java compilation from gradle project and run javac."""
(cmd, mtime) = get_gradle_command_and_project_mtime(
os.path.dirname(sourcefile))
output = None
if sessiondir != None:
cachefile = os.path.join(sessiondir, 'gradle_output')
try:
if os.path.getmtime(cachefile) >= mtime:
with open(cachefile, 'r') as f:
output = f.read()
except (OSError, IOError):
pass
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
for line in output:
if line == '***':
if data:
files = file_in_list(sourcefile, data['files'])
if files:
return run_javac(data['encoding'], data['source'],
data['target'], data['bootcp'],
data['cp'], files, data['output'],
data['args'], tempfile)
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 data:
files = file_in_list(sourcefile, data['files'])
if files:
return run_javac(data['encoding'], data['source'], data['target'],
data['bootcp'], data['cp'], files, data['output'],
data['args'], tempfile)
return 0
def main(argv):
sessiondir = None
if len(sys.argv) == 4:
sessiondir = sys.argv[1]
sourcefile = sys.argv[2]
tempfile = sys.argv[3]
elif len(sys.argv) == 3:
sourcefile = sys.argv[1]
tempfile = sys.argv[2]
elif len(sys.argv) == 2:
sourcefile = sys.argv[1]
tempfile = sourcefile
else:
return -1
sourcefile = os.path.abspath(sourcefile)
return figure_out_java_compilation(sessiondir, sourcefile, tempfile)
sys.exit(main(sys.argv))
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