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setup.py
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setup.py
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import logging
import os
import sys
import codecs
import re
import subprocess
import errno
from os.path import dirname, abspath
from os.path import split as psplit, join as pjoin
from setuptools import setup
from setuptools.command.build_ext import build_ext
from setuptools.extension import Extension
_LOGGER = logging.getLogger()
if os.environ.get('DEBUG'):
_LOGGER.setLevel(logging.DEBUG)
else:
_LOGGER.setLevel(logging.INFO)
_LOGGER.addHandler(logging.StreamHandler(sys.stderr))
_TESSERACT_MIN_VERSION = '3.04.00'
_CYTHON_COMPILE_TIME_ENV = None
# find_version from pip https://github.com/pypa/pip/blob/1.5.6/setup.py#L33
here = abspath(dirname(__file__))
def read(*parts):
return codecs.open(pjoin(here, *parts), 'r').read()
def find_version(*file_paths):
version_file = read(*file_paths)
version_match = re.search(r"^__version__ = ['\"]([^'\"]*)['\"]",
version_file, re.M)
if version_match:
return version_match.group(1)
raise RuntimeError("Unable to find version string.")
if sys.version_info >= (3, 0):
def _read_string(s):
return s.decode('UTF-8')
else:
def _read_string(s):
return s
def version_to_int(version):
version = re.search(r'((?:\d+\.)+\d+)', version).group()
# Split the groups on ".", take only the first one, and print each group with leading 0 if needed
# To be safe, also handle cases where an extra group is added to the version string, or if one or two groups
# are dropped.
version_groups = (version.split('.') + [0, 0])[:3]
version_str = "{:02}{:02}{:02}".format(*map(int, version_groups))
return int(version_str, 16)
def package_config():
"""Use pkg-config to get library build parameters and tesseract version."""
p = subprocess.Popen(['pkg-config', '--exists', '--atleast-version={}'.format(_TESSERACT_MIN_VERSION),
'--print-errors', 'tesseract'],
stderr=subprocess.PIPE)
_, error = p.communicate()
if p.returncode != 0:
raise Exception(error)
p = subprocess.Popen(['pkg-config', '--libs', '--cflags', 'tesseract'], stdout=subprocess.PIPE)
output, _ = p.communicate()
flags = _read_string(output).strip().split()
p = subprocess.Popen(['pkg-config', '--libs', '--cflags', 'lept'], stdout=subprocess.PIPE)
output, _ = p.communicate()
flags2 = _read_string(output).strip().split()
options = {'-L': 'library_dirs',
'-I': 'include_dirs',
'-l': 'libraries'}
config = {}
import itertools
for f in itertools.chain(flags, flags2):
try:
opt = options[f[:2]]
except KeyError:
continue
val = f[2:]
if opt == 'include_dirs' and psplit(val)[1].strip(os.sep) in ('leptonica', 'tesseract'):
val = dirname(val)
config.setdefault(opt, set()).add(val)
config = {k: list(v) for k, v in config.items()}
p = subprocess.Popen(['pkg-config', '--modversion', 'tesseract'], stdout=subprocess.PIPE)
version, _ = p.communicate()
version = _read_string(version).strip()
_LOGGER.info("Supporting tesseract v{}".format(version))
config['cython_compile_time_env'] = {'TESSERACT_VERSION': version_to_int(version)}
_LOGGER.info("Configs from pkg-config: {}".format(config))
return config
def get_tesseract_version():
"""Try to extract version from tesseract otherwise default min version."""
config = {'libraries': ['tesseract', 'lept']}
try:
p = subprocess.Popen(['tesseract', '-v'], stderr=subprocess.PIPE, stdout=subprocess.PIPE)
stdout_version, version = p.communicate()
version = _read_string(version).strip()
if version == '':
version = _read_string(stdout_version).strip()
version_match = re.search(r'^tesseract ((?:\d+\.)+\d+).*', version, re.M)
if version_match:
version = version_match.group(1)
else:
_LOGGER.warn('Failed to extract tesseract version number from: {}'.format(version))
version = _TESSERACT_MIN_VERSION
except OSError as e:
_LOGGER.warn('Failed to extract tesseract version from executable: {}'.format(e))
version = _TESSERACT_MIN_VERSION
_LOGGER.info("Supporting tesseract v{}".format(version))
version = version_to_int(version)
config['cython_compile_time_env'] = {'TESSERACT_VERSION': version}
_LOGGER.info("Building with configs: {}".format(config))
return config
def get_build_args():
"""Return proper build parameters."""
try:
build_args = package_config()
except Exception as e:
if isinstance(e, OSError):
if e.errno != errno.ENOENT:
_LOGGER.warn('Failed to run pkg-config: {}'.format(e))
else:
_LOGGER.warn('pkg-config failed to find tesseract/lept libraries: {}'.format(e))
build_args = get_tesseract_version()
if build_args['cython_compile_time_env']['TESSERACT_VERSION'] >= 0x030502:
_LOGGER.debug('tesseract >= 03.05.02 requires c++11 compiler support')
build_args['extra_compile_args'] = ['-std=c++11', '-DUSE_STD_NAMESPACE']
_LOGGER.debug('build parameters: {}'.format(build_args))
return build_args
def make_extension():
global _CYTHON_COMPILE_TIME_ENV
build_args = get_build_args()
_CYTHON_COMPILE_TIME_ENV = build_args.pop('cython_compile_time_env')
return Extension("tesserocr", sources=["tesserocr.pyx"], language="c++", **build_args)
class my_build_ext(build_ext, object):
def finalize_options(self):
from Cython.Build.Dependencies import cythonize
self.distribution.ext_modules[:] = cythonize(
self.distribution.ext_modules, compile_time_env=_CYTHON_COMPILE_TIME_ENV)
super(my_build_ext, self).finalize_options()
setup(name='tesserocr',
version=find_version('tesserocr.pyx'),
description='A simple, Pillow-friendly, Python wrapper around tesseract-ocr API using Cython',
long_description=read('README.rst'),
long_description_content_type='text/x-rst',
url='https://github.com/sirfz/tesserocr',
author='Fayez Zouheiry',
author_email='[email protected]',
license='MIT',
classifiers=[
'Development Status :: 5 - Production/Stable',
'Intended Audience :: Developers',
'Topic :: Multimedia :: Graphics :: Capture :: Scanners',
'Topic :: Multimedia :: Graphics :: Graphics Conversion',
'Topic :: Scientific/Engineering :: Image Recognition',
'License :: OSI Approved :: MIT License',
'Operating System :: POSIX',
'Programming Language :: Python :: 2.7',
'Programming Language :: Python :: 3',
'Programming Language :: Python :: 3.3',
'Programming Language :: Python :: 3.4',
'Programming Language :: Python :: 3.5',
'Programming Language :: Python :: 3.6',
'Programming Language :: Python :: 3.7',
'Programming Language :: Python :: Implementation :: CPython',
'Programming Language :: Python :: Implementation :: PyPy',
'Programming Language :: Cython'
],
keywords='Tesseract,tesseract-ocr,OCR,optical character recognition,PIL,Pillow,Cython',
cmdclass={'build_ext': my_build_ext},
ext_modules=[make_extension()],
test_suite='tests',
setup_requires=['Cython>=0.23'],
)