mirror of
https://github.com/deadc0de6/dotdrop.git
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203 lines
7.4 KiB
Python
203 lines
7.4 KiB
Python
"""
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author: deadc0de6 (https://github.com/deadc0de6)
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Copyright (c) 2017, deadc0de6
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handle the comparison of two dotfiles
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"""
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import os
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import filecmp
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# local imports
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from dotdrop.logger import Logger
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from dotdrop.utils import must_ignore, uniq_list, diff, \
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get_file_perm
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class Comparator:
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"""compare dotfiles helper"""
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def __init__(self, diff_cmd='', debug=False,
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ignore_missing_in_dotdrop=False):
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"""constructor
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@diff_cmd: diff command to use
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@debug: enable debug
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"""
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self.diff_cmd = diff_cmd
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self.debug = debug
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self.log = Logger(debug=self.debug)
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self.ignore_missing_in_dotdrop = ignore_missing_in_dotdrop
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def compare(self, local_path, deployed_path, ignore=None, mode=None):
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"""
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diff local_path (dotdrop dotfile) and
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deployed_path (destination file)
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If mode is None, rights will be read from local_path
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"""
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if not ignore:
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ignore = []
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local_path = os.path.expanduser(local_path)
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deployed_path = os.path.expanduser(deployed_path)
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self.log.dbg('comparing {} and {}'.format(
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local_path,
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deployed_path,
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))
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self.log.dbg('ignore pattern(s): {}'.format(ignore))
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# test type of file
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if os.path.isdir(local_path) and not os.path.isdir(deployed_path):
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return '\"{}\" is a dir while \"{}\" is a file\n'.format(
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local_path,
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deployed_path,
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)
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if not os.path.isdir(local_path) and os.path.isdir(deployed_path):
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return '\"{}\" is a file while \"{}\" is a dir\n'.format(
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local_path,
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deployed_path,
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)
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# test content
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if not os.path.isdir(local_path):
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self.log.dbg('{} is a file'.format(local_path))
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ret = self._comp_file(local_path, deployed_path, ignore)
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if not ret:
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ret = self._comp_mode(local_path, deployed_path, mode=mode)
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return ret
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self.log.dbg('{} is a directory'.format(local_path))
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ret = self._comp_dir(local_path, deployed_path, ignore)
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if not ret:
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ret = self._comp_mode(local_path, deployed_path, mode=mode)
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return ret
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def _comp_mode(self, local_path, deployed_path, mode=None):
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"""
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compare mode
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If mode is None, rights will be read on local_path
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"""
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local_mode = mode
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if not local_mode:
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local_mode = get_file_perm(local_path)
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deployed_mode = get_file_perm(deployed_path)
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if local_mode == deployed_mode:
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return ''
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msg = 'mode differ {} ({:o}) and {} ({:o})'
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self.log.dbg(msg.format(local_path, local_mode, deployed_path,
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deployed_mode))
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ret = 'modes differ for {} ({:o}) vs {:o}\n'
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return ret.format(deployed_path, deployed_mode, local_mode)
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def _comp_file(self, local_path, deployed_path, ignore):
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"""compare a file"""
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self.log.dbg('compare file {} with {}'.format(
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local_path,
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deployed_path,
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))
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if (self.ignore_missing_in_dotdrop and not
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os.path.exists(local_path)) \
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or must_ignore([local_path, deployed_path], ignore,
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debug=self.debug):
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self.log.dbg('ignoring diff {} and {}'.format(
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local_path,
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deployed_path,
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))
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return ''
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return self._diff(local_path, deployed_path)
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def _comp_dir(self, local_path, deployed_path, ignore):
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"""compare a directory"""
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self.log.dbg('compare directory {} with {}'.format(
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local_path,
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deployed_path,
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))
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if not os.path.exists(deployed_path):
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return ''
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if (self.ignore_missing_in_dotdrop and not
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os.path.exists(local_path)) \
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or must_ignore([local_path, deployed_path], ignore,
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debug=self.debug):
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self.log.dbg('ignoring diff {} and {}'.format(
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local_path,
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deployed_path,
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))
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return ''
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if not os.path.isdir(deployed_path):
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return '\"{}\" is a file\n'.format(deployed_path)
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return self._compare_dirs(local_path, deployed_path, ignore)
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def _compare_dirs(self, local_path, deployed_path, ignore):
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"""compare directories"""
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self.log.dbg('compare {} and {}'.format(local_path, deployed_path))
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ret = []
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comp = filecmp.dircmp(local_path, deployed_path)
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# handle files only in deployed dir
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self.log.dbg('files only in deployed dir: {}'.format(comp.left_only))
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for i in comp.left_only:
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if self.ignore_missing_in_dotdrop or \
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must_ignore([os.path.join(local_path, i)],
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ignore, debug=self.debug):
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continue
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ret.append('=> \"{}\" does not exist on destination\n'.format(i))
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# handle files only in dotpath dir
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self.log.dbg('files only in dotpath dir: {}'.format(comp.right_only))
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for i in comp.right_only:
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if must_ignore([os.path.join(deployed_path, i)],
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ignore, debug=self.debug):
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continue
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if not self.ignore_missing_in_dotdrop:
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ret.append('=> \"{}\" does not exist in dotdrop\n'.format(i))
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# same local_path and deployed_path but different type
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funny = comp.common_funny
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self.log.dbg('files with different types: {}'.format(funny))
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for i in funny:
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source_file = os.path.join(local_path, i)
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deployed_file = os.path.join(deployed_path, i)
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if self.ignore_missing_in_dotdrop and \
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not os.path.exists(source_file):
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continue
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if must_ignore([source_file, deployed_file],
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ignore, debug=self.debug):
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continue
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short = os.path.basename(source_file)
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# file vs dir
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ret.append('=> different type: \"{}\"\n'.format(short))
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# content is different
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funny = comp.diff_files
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funny.extend(comp.funny_files)
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funny = uniq_list(funny)
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self.log.dbg('files with different content: {}'.format(funny))
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for i in funny:
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source_file = os.path.join(local_path, i)
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deployed_file = os.path.join(deployed_path, i)
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if self.ignore_missing_in_dotdrop and \
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not os.path.exists(source_file):
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continue
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if must_ignore([source_file, deployed_file],
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ignore, debug=self.debug):
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continue
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ret.append(self._diff(source_file, deployed_file, header=True))
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# recursively compare subdirs
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for i in comp.common_dirs:
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sublocal_path = os.path.join(local_path, i)
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subdeployed_path = os.path.join(deployed_path, i)
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ret.extend(self._comp_dir(sublocal_path, subdeployed_path, ignore))
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return ''.join(ret)
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def _diff(self, local_path, deployed_path, header=False):
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"""diff two files"""
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out = diff(modified=local_path, original=deployed_path,
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diff_cmd=self.diff_cmd, debug=self.debug)
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if header:
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lshort = os.path.basename(local_path)
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out = '=> diff \"{}\":\n{}'.format(lshort, out)
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return out
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