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#!/usr/bin/env python
# python-gphoto2 - Python interface to libgphoto2
# http://github.com/jim-easterbrook/python-gphoto2
# Copyright (C) 2014-22 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/>.
from datetime import datetime
import locale
import logging
import os
import sys
import gphoto2 as gp
# my Canon dSLR raises an error on every deletion, but still does it OK
gp.error_severity[gp.GP_ERROR] = logging.WARNING
def list_files(camera, path='/'):
result = []
# get files
for name, value in camera.folder_list_files(path):
result.append(os.path.join(path, name))
# read folders
folders = []
for name, value in camera.folder_list_folders(path):
folders.append(name)
# recurse over subfolders
for name in folders:
result.extend(list_files(camera, os.path.join(path, name)))
return result
def get_file_info(camera, path):
folder, name = os.path.split(path)
return camera.file_get_info(folder, name)
def delete_file(camera, path):
folder, name = os.path.split(path)
camera.file_delete(folder, name)
def main(argv=None):
if argv is None:
argv = sys.argv
locale.setlocale(locale.LC_ALL, '')
logging.basicConfig(
format='%(levelname)s: %(name)s: %(message)s', level=logging.WARNING)
callback_obj = gp.check_result(gp.use_python_logging())
camera = gp.Camera()
camera.init()
storage_info = camera.get_storageinfo()
if len(storage_info) > 1:
print('Unable to handle camera with multiple storage media')
return 1
if len(storage_info) == 0:
print('No storage info available')
return 2
si = storage_info[0]
if not (si.fields & gp.GP_STORAGEINFO_MAXCAPACITY and
si.fields & gp.GP_STORAGEINFO_FREESPACEKBYTES):
print('Cannot read storage capacity')
return 3
print('Camera has %.1f%% free space' % (
100.0 * float(si.freekbytes) / float(si.capacitykbytes)))
if len(argv) < 2:
return 4
if len(argv) > 2:
print('usage: %s [percent_to_clear]' % argv[0])
return 5
target = float(argv[1]) / 100.0
target = int(target * float(si.capacitykbytes))
free_space = si.freekbytes
if free_space >= target:
print('Sufficient free space')
return 0
print('Getting file list...')
files = list_files(camera)
mtime = {}
size = {}
for path in files:
info = get_file_info(camera, path)
mtime[path] = info.file.mtime
size[path] = info.file.size
files.sort(key=lambda x: mtime[x], reverse=True)
while True:
while files and free_space < target:
path = files.pop()
print('Delete', path)
delete_file(camera, path)
free_space += size[path] // 1000
storage_info = camera.get_storageinfo()
si = storage_info[0]
print('Camera has %.1f%% free space' % (
100.0 * float(si.freekbytes) / float(si.capacitykbytes)))
free_space = si.freekbytes
if free_space >= target or len(files) == 0:
break
camera.exit()
return 0
if __name__ == "__main__":
sys.exit(main())
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