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import os
import os.path
import re
import shlex
import shutil
import subprocess
TESTS_DIR = os.path.dirname(__file__)
TOOL_ROOT = os.path.dirname(TESTS_DIR)
SRCDIR = os.path.dirname(os.path.dirname(TOOL_ROOT))
MAKE = shutil.which('make')
GIT = shutil.which('git')
FREEZE = os.path.join(TOOL_ROOT, 'freeze.py')
OUTDIR = os.path.join(TESTS_DIR, 'outdir')
class UnsupportedError(Exception):
"""The operation isn't supported."""
def _run_quiet(cmd, cwd=None):
#print(f'# {" ".join(shlex.quote(a) for a in cmd)}')
return subprocess.run(
cmd,
cwd=cwd,
capture_output=True,
text=True,
check=True,
)
def _run_stdout(cmd, cwd=None):
proc = _run_quiet(cmd, cwd)
return proc.stdout.strip()
def find_opt(args, name):
opt = f'--{name}'
optstart = f'{opt}='
for i, arg in enumerate(args):
if arg == opt or arg.startswith(optstart):
return i
return -1
def ensure_opt(args, name, value):
opt = f'--{name}'
pos = find_opt(args, name)
if value is None:
if pos < 0:
args.append(opt)
else:
args[pos] = opt
elif pos < 0:
args.extend([opt, value])
else:
arg = args[pos]
if arg == opt:
if pos == len(args) - 1:
raise NotImplementedError((args, opt))
args[pos + 1] = value
else:
args[pos] = f'{opt}={value}'
def git_copy_repo(newroot, oldroot):
if not GIT:
raise UnsupportedError('git')
if os.path.exists(newroot):
print(f'updating copied repo {newroot}...')
if newroot == SRCDIR:
raise Exception('this probably isn\'t what you wanted')
_run_quiet([GIT, 'clean', '-d', '-f'], newroot)
_run_quiet([GIT, 'reset'], newroot)
_run_quiet([GIT, 'checkout', '.'], newroot)
_run_quiet([GIT, 'pull', '-f', oldroot], newroot)
else:
print(f'copying repo into {newroot}...')
_run_quiet([GIT, 'clone', oldroot, newroot])
# Copy over any uncommited files.
text = _run_stdout([GIT, 'status', '-s'], oldroot)
for line in text.splitlines():
_, _, relfile = line.strip().partition(' ')
relfile = relfile.strip()
isdir = relfile.endswith(os.path.sep)
relfile = relfile.rstrip(os.path.sep)
srcfile = os.path.join(oldroot, relfile)
dstfile = os.path.join(newroot, relfile)
os.makedirs(os.path.dirname(dstfile), exist_ok=True)
if isdir:
shutil.copytree(srcfile, dstfile, dirs_exist_ok=True)
else:
shutil.copy2(srcfile, dstfile)
def get_makefile_var(builddir, name):
regex = re.compile(rf'^{name} *=\s*(.*?)\s*$')
filename = os.path.join(builddir, 'Makefile')
try:
infile = open(filename)
except FileNotFoundError:
return None
with infile:
for line in infile:
m = regex.match(line)
if m:
value, = m.groups()
return value or ''
return None
def get_config_var(builddir, name):
python = os.path.join(builddir, 'python')
if os.path.isfile(python):
cmd = [python, '-c',
f'import sysconfig; print(sysconfig.get_config_var("{name}"))']
try:
return _run_stdout(cmd)
except subprocess.CalledProcessError:
pass
return get_makefile_var(builddir, name)
##################################
# freezing
def prepare(script=None, outdir=None):
if not outdir:
outdir = OUTDIR
os.makedirs(outdir, exist_ok=True)
# Write the script to disk.
if script:
scriptfile = os.path.join(outdir, 'app.py')
with open(scriptfile, 'w') as outfile:
outfile.write(script)
# Make a copy of the repo to avoid affecting the current build.
srcdir = os.path.join(outdir, 'cpython')
git_copy_repo(srcdir, SRCDIR)
# We use an out-of-tree build (instead of srcdir).
builddir = os.path.join(outdir, 'python-build')
os.makedirs(builddir, exist_ok=True)
# Run configure.
print(f'configuring python in {builddir}...')
cmd = [
os.path.join(srcdir, 'configure'),
*shlex.split(get_config_var(builddir, 'CONFIG_ARGS') or ''),
]
ensure_opt(cmd, 'cache-file', os.path.join(outdir, 'python-config.cache'))
prefix = os.path.join(outdir, 'python-installation')
ensure_opt(cmd, 'prefix', prefix)
_run_quiet(cmd, builddir)
if not MAKE:
raise UnsupportedError('make')
# Build python.
print('building python...')
if os.path.exists(os.path.join(srcdir, 'Makefile')):
# Out-of-tree builds require a clean srcdir.
_run_quiet([MAKE, '-C', srcdir, 'clean'])
_run_quiet([MAKE, '-C', builddir, '-j8'])
# Install the build.
print(f'installing python into {prefix}...')
_run_quiet([MAKE, '-C', builddir, '-j8', 'install'])
python = os.path.join(prefix, 'bin', 'python3')
return outdir, scriptfile, python
def freeze(python, scriptfile, outdir):
if not MAKE:
raise UnsupportedError('make')
print(f'freezing {scriptfile}...')
os.makedirs(outdir, exist_ok=True)
_run_quiet([python, FREEZE, '-o', outdir, scriptfile], outdir)
_run_quiet([MAKE, '-C', os.path.dirname(scriptfile)])
name = os.path.basename(scriptfile).rpartition('.')[0]
executable = os.path.join(outdir, name)
return executable
def run(executable):
return _run_stdout([executable])
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