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# python-gphoto2 - Python interface to libgphoto2
# http://github.com/jim-easterbrook/python-gphoto2
# Copyright (C) 2021-23 Jim Easterbrook jim@jim-easterbrook.me.uk
#
# This file is part of python-gphoto2.
#
# python-gphoto2 is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# python-gphoto2 is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with python-gphoto2. If not, see
# <https://www.gnu.org/licenses/>.
import os
import shutil
import subprocess
import sys
def main(argv=None):
# system or local libexiv2?
if len(sys.argv) > 2:
print('Usage: %s [prefix]' % sys.argv[0])
return 1
if len(sys.argv) > 1:
for root, dirs, files in os.walk(sys.argv[1]):
if 'libgphoto2.pc' in files:
os.environ['PKG_CONFIG_PATH'] = root
break
else:
print('No package config file found')
return 2
# get python-gphoto2 version
with open('README.rst') as rst:
version = rst.readline().split()[-1]
# get libgphoto2 version to be swigged
cmd = ['pkg-config', '--modversion', 'libgphoto2']
FNULL = open(os.devnull, 'w')
try:
gphoto2_version_str = subprocess.check_output(
cmd, stderr=FNULL, universal_newlines=True).strip()
except Exception:
print('ERROR: command "{}" failed'.format(' '.join(cmd)))
raise
gphoto2_include = subprocess.check_output(
['pkg-config', '--cflags-only-I', 'libgphoto2'],
universal_newlines=True).strip().split()
for n in range(len(gphoto2_include)):
if gphoto2_include[n].endswith('/gphoto2'):
gphoto2_include[n] = gphoto2_include[n][:-len('/gphoto2')]
# get list of modules (Python) and extensions (SWIG)
file_names = os.listdir(os.path.join('src', 'gphoto2'))
file_names.sort()
file_names = [os.path.splitext(x) for x in file_names]
ext_names = [x[0] for x in file_names if x[1] == '.i']
py_names = [x[0] + x[1] for x in file_names if x[1] == '.py']
# get SWIG version
cmd = ['swig', '-version']
try:
swig_version = str(subprocess.Popen(
cmd, stdout=subprocess.PIPE,
universal_newlines=True).communicate()[0])
except Exception:
print('ERROR: command "%s" failed' % ' '.join(cmd))
raise
for line in swig_version.splitlines():
if 'Version' in line:
swig_version = tuple(map(int, line.split()[-1].split('.')))
break
# make options list
swig_opts = ['-python', '-nodefaultctor', '-O',
'-Wextra', '-Werror', '-builtin', '-nofastunpack']
if swig_version < (4, 1, 0):
swig_opts.append('-py3')
doc_file = os.path.join('src', 'gphoto2', 'common', 'doc.i')
output_dir = os.path.join('src', 'swig')
output_dir += '-gp' + gphoto2_version_str.replace('.', '_')
os.makedirs(output_dir, exist_ok=True)
version_opts = ['-outdir', output_dir]
if os.path.isfile(doc_file):
version_opts.append(
'-DDOC_FILE=' + os.path.basename(doc_file))
version_opts += gphoto2_include
# do each swig module
for ext_name in ext_names:
cmd = ['swig'] + swig_opts + version_opts + ['-o']
cmd += [os.path.join(output_dir, ext_name + '_wrap.c')]
cmd += [os.path.join('src', 'gphoto2', ext_name + '.i')]
print(' '.join(cmd))
subprocess.check_output(cmd)
# copy python modules
for py_name in py_names:
shutil.copy2(os.path.join('src', 'gphoto2', py_name), output_dir)
# create init module
init_file = os.path.join(output_dir, '__init__.py')
with open(init_file, 'w') as im:
im.write('__version__ = "{}"\n'.format(version))
im.write('__version_tuple__ = tuple(({}))\n'.format(
', '.join(version.split('.'))))
im.write('''
import os
_dir = os.path.dirname(__file__)
_camlibs = os.path.join(_dir, 'libgphoto2', 'camlibs')
if os.path.isdir(_camlibs):
os.environ['CAMLIBS'] = _camlibs
if 'VCAMERADIR' in os.environ:
_iolibs = os.path.join(_dir, 'libgphoto2', 'vusb')
else:
_iolibs = os.path.join(_dir, 'libgphoto2', 'iolibs')
if os.path.isdir(_iolibs):
os.environ['IOLIBS'] = _iolibs
class GPhoto2Error(Exception):
"""Exception raised by gphoto2 library errors
Attributes:
code (int): the gphoto2 error code
string (str): corresponding error message
"""
def __init__(self, code):
string = gp_result_as_string(code)
Exception.__init__(self, '[%d] %s' % (code, string))
self.code = code
self.string = string
''')
for name in ext_names:
im.write('from gphoto2.{} import *\n'.format(name))
im.write('''
_locale = os.path.join(_dir, 'libgphoto2', 'locale')
if os.path.isdir(_locale):
gphoto2.abilities_list.gp_init_localedir(_locale)
__all__ = dir()
''')
return 0
if __name__ == "__main__":
sys.exit(main())
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