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Filename: //lib/python3/dist-packages/cloudinit/mergers//m_list.py
# Copyright (C) 2012 Yahoo! Inc. # # Author: Joshua Harlow <harlowja@yahoo-inc.com> # # This file is part of cloud-init. See LICENSE file for license information. DEF_MERGE_TYPE = 'replace' MERGE_TYPES = ('append', 'prepend', DEF_MERGE_TYPE, 'no_replace') def _has_any(what, *keys): for k in keys: if k in what: return True return False class Merger(object): def __init__(self, merger, opts): self._merger = merger # Affects merging behavior... self._method = DEF_MERGE_TYPE for m in MERGE_TYPES: if m in opts: self._method = m break # Affect how recursive merging is done on other primitives self._recurse_str = _has_any(opts, 'recurse_str') self._recurse_dict = _has_any(opts, 'recurse_dict') self._recurse_array = _has_any(opts, 'recurse_array', 'recurse_list') def __str__(self): return ('ListMerger: (method=%s,recurse_str=%s,' 'recurse_dict=%s,recurse_array=%s)') % (self._method, self._recurse_str, self._recurse_dict, self._recurse_array) def _on_tuple(self, value, merge_with): return tuple(self._on_list(list(value), merge_with)) def _on_list(self, value, merge_with): if (self._method == 'replace' and not isinstance(merge_with, (tuple, list))): return merge_with # Ok we now know that what we are merging with is a list or tuple. merged_list = [] if self._method == 'prepend': merged_list.extend(merge_with) merged_list.extend(value) return merged_list elif self._method == 'append': merged_list.extend(value) merged_list.extend(merge_with) return merged_list def merge_same_index(old_v, new_v): if self._method == 'no_replace': # Leave it be... return old_v if isinstance(new_v, (list, tuple)) and self._recurse_array: return self._merger.merge(old_v, new_v) if isinstance(new_v, str) and self._recurse_str: return self._merger.merge(old_v, new_v) if isinstance(new_v, (dict)) and self._recurse_dict: return self._merger.merge(old_v, new_v) return new_v # Ok now we are replacing same indexes merged_list.extend(value) common_len = min(len(merged_list), len(merge_with)) for i in range(0, common_len): merged_list[i] = merge_same_index(merged_list[i], merge_with[i]) return merged_list # vi: ts=4 expandtab
./Ninja\.