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#!/usr/bin/python
"""Modify a dependency listed in a package.json file"""
# Copyright 2013 T.C. Hollingsworth <tchollingsworth@gmail.com>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to
# deal in the Software without restriction, including without limitation the
# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
# sell copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
# IN THE SOFTWARE.
import json
import optparse
import os
import re
import shutil
import sys
RE_VERSION = re.compile(r'\s*v?([<>=~^]{0,2})\s*([0-9][0-9\.\-]*)\s*')
p = optparse.OptionParser(
description='Modifies dependency entries in package.json files')
p.add_option('-r', '--remove', action='store_true')
p.add_option('--dev', action='store_const', const='devDependencies',
dest='deptype', help='affect devDependencies')
p.add_option('--optional', action='store_const', const='optionalDependencies',
dest='deptype', help='affect optionalDependencies')
p.add_option('--caret', action='store_true',
help='convert all or specified dependencies to use the caret operator')
options, args = p.parse_args()
if not os.path.exists('package.json~'):
shutil.copy2('package.json', 'package.json~')
md = json.load(open('package.json'))
deptype = options.deptype if options.deptype is not None else 'dependencies'
if deptype not in md:
md[deptype] = {}
# convert alternate JSON dependency representations to a dictionary
if not options.caret and not isinstance(md[deptype], dict):
if isinstance(md[deptype], list):
deps = md[deptype]
md[deptype] = {}
for dep in deps:
md[deptype][dep] = '*'
elif isinstance(md[deptype], basestring):
md[deptype] = { md[deptype] : '*' }
if options.remove:
dep = args[0]
del md[deptype][dep]
elif options.caret:
if not isinstance(md[deptype], dict):
sys.stderr.write('All dependencies are unversioned. Unable to apply ' +
'caret operator.\n')
sys.exit(2)
deps = args if len(args) > 0 else md[deptype].keys()
for dep in deps:
if md[deptype][dep][0] == '^':
continue
elif md[deptype][dep][0] in ('~','0','1','2','3','4','5','6','7','8','9'):
ver = re.match(RE_VERSION, md[deptype][dep]).group(2)
md[deptype][dep] = '^' + ver
else:
sys.stderr.write('Attempted to convert non-numeric or tilde ' +
'dependency to caret. This is not permitted.\n')
sys.exit(1)
else:
dep = args[0]
if len(args) > 1:
ver = args[1]
else:
ver = '*'
md[deptype][dep] = ver
fh = open('package.json', 'w')
data = json.JSONEncoder(indent=4).encode(md)
fh.write(data)
fh.close()