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refactor, listen on setup.py, *.pxd
This commit is contained in:
Henning Peters
parent
d19f1a3254
commit
7627969aba
234
bin/cythonize.py
234
bin/cythonize.py
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@ -1,62 +1,50 @@
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#!/usr/bin/env python
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""" cythonize
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""" cythonize.py
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Cythonize pyx files into C files as needed.
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Cythonize pyx files into C++ files as needed.
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Usage: cythonize [root_dir]
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Default [root_dir] is 'spacy'.
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Usage: cythonize.py [root]
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Checks pyx files to see if they have been changed relative to their
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corresponding C files. If they have, then runs cython on these files to
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recreate the C files.
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corresponding C++ files. If they have, then runs cython on these files to
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recreate the C++ files.
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The script thinks that the pyx files have changed relative to the C files
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by comparing hashes stored in a database file.
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Additionally, checks pxd files and setup.py if they have been changed. If
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they have, rebuilds everything.
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Simple script to invoke Cython (and Tempita) on all .pyx (.pyx.in)
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files; while waiting for a proper build system. Uses file hashes to
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figure out if rebuild is needed.
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Change detection based on file hashes stored in JSON format.
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For now, this script should be run by developers when changing Cython files
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only, and the resulting C files checked in, so that end-users (and Python-only
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developers) do not get the Cython/Tempita dependencies.
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and the resulting C++ files checked in, so that end-users (and Python-only
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developers) do not get the Cython dependencies.
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Originally written by Dag Sverre Seljebotn, and copied here from:
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Based upon:
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https://raw.github.com/dagss/private-scipy-refactor/cythonize/cythonize.py
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https://raw.githubusercontent.com/numpy/numpy/master/tools/cythonize.py
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Note: this script does not check any of the dependent C libraries; it only
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operates on the Cython .pyx files.
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Note: this script does not check any of the dependent C++ libraries.
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"""
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from __future__ import division, print_function, absolute_import
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from __future__ import print_function
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import os
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import re
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import sys
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import json
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import hashlib
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import subprocess
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import argparse
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HASH_FILE = 'cythonize.dat'
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DEFAULT_ROOT = 'spacy'
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VENDOR = 'spaCy'
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# WindowsError is not defined on unix systems
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try:
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WindowsError
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except NameError:
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WindowsError = None
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HASH_FILE = 'cythonize.json'
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#
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# Rules
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#
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def process_pyx(fromfile, tofile):
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print('Processing %s' % fromfile)
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try:
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from Cython.Compiler.Version import version as cython_version
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from distutils.version import LooseVersion
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if LooseVersion(cython_version) < LooseVersion('0.19'):
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raise Exception('Building %s requires Cython >= 0.19' % VENDOR)
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raise Exception('Require Cython >= 0.19')
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except ImportError:
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pass
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@ -67,133 +55,101 @@ def process_pyx(fromfile, tofile):
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try:
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try:
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r = subprocess.call(['cython'] + flags + ["-o", tofile, fromfile])
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r = subprocess.call(['cython'] + flags + ['-o', tofile, fromfile])
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if r != 0:
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raise Exception('Cython failed')
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except OSError:
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# There are ways of installing Cython that don't result in a cython
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# executable on the path, see gh-2397.
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r = subprocess.call([sys.executable, '-c',
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'import sys; from Cython.Compiler.Main import '
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'setuptools_main as main; sys.exit(main())'] + flags +
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["-o", tofile, fromfile])
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'import sys; from Cython.Compiler.Main import '
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'setuptools_main as main; sys.exit(main())'] + flags +
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['-o', tofile, fromfile])
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if r != 0:
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raise Exception('Cython failed')
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except OSError:
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raise OSError('Cython needs to be installed')
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def process_tempita_pyx(fromfile, tofile):
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try:
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try:
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from Cython import Tempita as tempita
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except ImportError:
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import tempita
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except ImportError:
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raise Exception('Building %s requires Tempita: '
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'pip install --user Tempita' % VENDOR)
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with open(fromfile, "r") as f:
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tmpl = f.read()
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pyxcontent = tempita.sub(tmpl)
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assert fromfile.endswith('.pyx.in')
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pyxfile = fromfile[:-len('.pyx.in')] + '.pyx'
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with open(pyxfile, "w") as f:
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f.write(pyxcontent)
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process_pyx(pyxfile, tofile)
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rules = {
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# fromext : function
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'.pyx' : process_pyx,
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'.pyx.in' : process_tempita_pyx
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}
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#
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# Hash db
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#
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def load_hashes(filename):
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# Return { filename : (sha1 of input, sha1 of output) }
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if os.path.isfile(filename):
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hashes = {}
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with open(filename, 'r') as f:
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for line in f:
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filename, inhash, outhash = line.split()
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hashes[filename] = (inhash, outhash)
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else:
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hashes = {}
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return hashes
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def save_hashes(hash_db, filename):
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with open(filename, 'w') as f:
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for key, value in sorted(hash_db.items()):
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f.write("%s %s %s\n" % (key, value[0], value[1]))
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def sha1_of_file(filename):
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h = hashlib.sha1()
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with open(filename, "rb") as f:
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h.update(f.read())
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return h.hexdigest()
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#
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# Main program
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#
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def normpath(path):
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path = path.replace(os.sep, '/')
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if path.startswith('./'):
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path = path[2:]
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return path
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def get_hash(frompath, topath):
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from_hash = sha1_of_file(frompath)
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to_hash = sha1_of_file(topath) if os.path.exists(topath) else None
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return (from_hash, to_hash)
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def process(path, fromfile, tofile, processor_function, hash_db):
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fullfrompath = os.path.join(path, fromfile)
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fulltopath = os.path.join(path, tofile)
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current_hash = get_hash(fullfrompath, fulltopath)
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if current_hash == hash_db.get(normpath(fullfrompath), None):
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print('%s has not changed' % fullfrompath)
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return
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def preserve_cwd(path, func, *args):
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orig_cwd = os.getcwd()
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try:
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os.chdir(path)
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print('Processing %s' % fullfrompath)
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processor_function(fromfile, tofile)
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func(*args)
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finally:
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os.chdir(orig_cwd)
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# changed target file, recompute hash
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current_hash = get_hash(fullfrompath, fulltopath)
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# store hash in db
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hash_db[normpath(fullfrompath)] = current_hash
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def find_process_files(root_dir):
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hash_db = load_hashes(HASH_FILE)
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for cur_dir, dirs, files in os.walk(root_dir):
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for filename in files:
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in_file = os.path.join(cur_dir, filename + ".in")
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if filename.endswith('.pyx') and os.path.isfile(in_file):
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continue
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for fromext, function in rules.items():
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if filename.endswith(fromext):
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toext = ".cpp"
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# with open(os.path.join(cur_dir, filename), 'rb') as f:
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# data = f.read()
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# m = re.search(br"^\s*#\s*distutils:\s*language\s*=\s*c\+\+\s*$", data, re.I|re.M)
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# if m:
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# toext = ".cxx"
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fromfile = filename
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tofile = filename[:-len(fromext)] + toext
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process(cur_dir, fromfile, tofile, function, hash_db)
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save_hashes(hash_db, HASH_FILE)
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def main():
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def load_hashes(filename):
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try:
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root_dir = sys.argv[1]
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except IndexError:
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root_dir = DEFAULT_ROOT
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find_process_files(root_dir)
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return json.load(open(filename))
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except (ValueError, IOError):
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return {}
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def save_hashes(hash_db, filename):
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json.dump(hash_db, open(filename, 'w'))
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def get_hash(path):
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return hashlib.md5(open(path).read()).hexdigest()
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def hash_changed(base, path, db):
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full_path = os.path.normpath(os.path.join(base, path))
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return not get_hash(full_path) == db.get(full_path)
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def hash_add(base, path, db):
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full_path = os.path.normpath(os.path.join(base, path))
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db[full_path] = get_hash(full_path)
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def process(base, filename, db):
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root, ext = os.path.splitext(filename)
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if ext in ['.pyx', '.cpp']:
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if hash_changed(base, filename, db):
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preserve_cwd(base, process_pyx, root + '.pyx', root + '.cpp')
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hash_add(base, root + '.cpp', db)
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hash_add(base, root + '.pyx', db)
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def check_changes(root, db):
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res = False
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new_db = {}
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setup_filename = 'setup.py'
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hash_add('.', setup_filename, new_db)
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if hash_changed('.', setup_filename, db):
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res = True
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for base, _, files in os.walk(root):
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for filename in files:
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if filename.endswith('.pxd'):
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hash_add(base, filename, new_db)
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if hash_changed(base, filename, db):
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res = True
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if res:
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db.clear()
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db.update(new_db)
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return res
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def run(root):
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db = load_hashes(HASH_FILE)
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try:
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check_changes(root, db)
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for base, _, files in os.walk(root):
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for filename in files:
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process(base, filename, db)
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finally:
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save_hashes(db, HASH_FILE)
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if __name__ == '__main__':
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main()
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parser = argparse.ArgumentParser(description='Cythonize pyx files into C++ files as needed')
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parser.add_argument('root', help='root directory')
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args = parser.parse_args()
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run(args.root)
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