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58f65345ff
* Remove Duplicate ignore Match * Continue Optimize Dvcignore fix #3869 * Add a new test with multi ignore files * Solve merging two dvc files * Solve Code Climate * For Windows * Complete addition of patterns. Add one test * Systematic test * Change request * Change request * Seperate path sepcification math * Rename and add comment * rename change_dirname to private * Update dvc/pathspec_math.py list comprehension Co-authored-by: Alexander Schepanovski <[email protected]> * Change request * Update dvc/ignore.py Co-authored-by: karajan1001 <[email protected]> Co-authored-by: Alexander Schepanovski <[email protected]> Co-authored-by: Ruslan Kuprieiev <[email protected]>
86 lines
2.4 KiB
Python
86 lines
2.4 KiB
Python
# Path Specification Pattern Math
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# Including changing base dir of path specification patterns and merging
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# of two path specification patterns with different base
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# All the operations follow the documents of `gitignore`
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import os
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from pathspec.util import normalize_file
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def _not_ignore(rule):
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return (True, rule[1:]) if rule.startswith("!") else (False, rule)
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def _is_comment(rule):
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return rule.startswith("#")
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def _remove_slash(rule):
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if rule.startswith("\\"):
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return rule[1:]
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return rule
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def _match_all_level(rule):
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if rule[:-1].find("/") >= 0 and not rule.startswith("**/"):
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if rule.startswith("/"):
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rule = rule[1:]
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return False, rule
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if rule.startswith("**/"):
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rule = rule[3:]
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return True, rule
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def change_rule(rule, rel):
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rule = rule.strip()
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if _is_comment(rule):
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return rule
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not_ignore, rule = _not_ignore(rule)
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match_all, rule = _match_all_level(rule)
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rule = _remove_slash(rule)
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if not match_all:
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rule = f"/{rule}"
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else:
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rule = f"/**/{rule}"
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if not_ignore:
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rule = f"!/{rel}{rule}"
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else:
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rule = f"/{rel}{rule}"
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rule = normalize_file(rule)
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return rule
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def _change_dirname(dirname, pattern_list, new_dirname):
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if new_dirname == dirname:
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return pattern_list
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rel = os.path.relpath(dirname, new_dirname)
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if rel.startswith(".."):
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raise ValueError("change dirname can only change to parent path")
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return [change_rule(rule, rel) for rule in pattern_list]
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def merge_patterns(prefix_a, pattern_a, prefix_b, pattern_b):
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"""
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Merge two path specification patterns.
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This implementation merge two path specification patterns on different
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bases. It returns the longest common parent directory, and the patterns
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based on this new base directory.
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"""
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if not pattern_a:
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return prefix_b, pattern_b
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elif not pattern_b:
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return prefix_a, pattern_a
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longest_common_dir = os.path.commonpath([prefix_a, prefix_b])
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new_pattern_a = _change_dirname(prefix_a, pattern_a, longest_common_dir)
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new_pattern_b = _change_dirname(prefix_b, pattern_b, longest_common_dir)
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if len(prefix_a) < len(prefix_b):
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merged_pattern = new_pattern_a + new_pattern_b
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else:
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merged_pattern = new_pattern_b + new_pattern_a
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return longest_common_dir, merged_pattern
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