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# Copyright (c) 2015 SUSE Linux GmbH. All rights reserved.
#
# This file is part of kiwi.
#
# kiwi is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# kiwi 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with kiwi. If not, see <http://www.gnu.org/licenses/>
#
import json
import os
import logging
# project
from kiwi.utils.temporary import Temporary
from kiwi.path import Path
log = logging.getLogger('kiwi')
class DataOutput:
"""
**Converts dict or list variables to a print friendly json format**
Output controller for data dictionary. The class expects a
python dict or list to hold the data to become displayed. So
far the output format is set to json
:param data: python dict or list which holds the data
:type data: dict, list
:param str style: output style could be either standard or color
"""
def __init__(self, data, style='standard'):
self.data = data
self.style = style
self.color_json = Path.which('pjson')
def display(self):
"""
Show data in json output format and selected style
"""
self._json()
@staticmethod
def display_file(filename, message=None):
"""
Show data from file
"""
if message:
log.info(message)
with open(filename) as data:
print(data.read())
def _json(self):
"""
Show data in json output format and selected style
"""
if self.style == 'color':
if self.color_json:
self._color_json()
else:
log.warning('pjson for color output not installed')
log.warning('run: pip install pjson')
self._standard_json()
else:
self._standard_json()
def _standard_json(self):
"""
Show data in plain json output format without any highlighting
"""
print(
json.dumps(
self.data, sort_keys=True, indent=4, separators=(',', ': ')
)
)
def _color_json(self):
"""
Show data in json output format with nice color highlighting
"""
out_file = Temporary().new_file()
out_file.write(json.dumps(self.data, sort_keys=True).encode())
out_file.flush()
pjson_cmd = ''.join(
['cat ', out_file.name, ' | pjson']
)
os.system(pjson_cmd)
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