79 lines
2.3 KiB
Ruby
79 lines
2.3 KiB
Ruby
# frozen_string_literal: true
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module Gitlab
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module Ci
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module Build
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class Rules::Rule::Clause::Exists < Rules::Rule::Clause
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# The maximum number of patterned glob comparisons that will be
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# performed before the rule assumes that it has a match
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MAX_PATTERN_COMPARISONS = 10_000
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def initialize(globs)
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@globs = Array(globs)
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@top_level_only = @globs.all?(&method(:top_level_glob?))
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end
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def satisfied_by?(_pipeline, context)
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paths = worktree_paths(context)
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exact_globs, pattern_globs = separate_globs(context)
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exact_matches?(paths, exact_globs) || pattern_matches?(paths, pattern_globs)
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end
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private
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def separate_globs(context)
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expanded_globs = expand_globs(context)
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expanded_globs.partition(&method(:exact_glob?))
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end
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def expand_globs(context)
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@globs.map do |glob|
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ExpandVariables.expand_existing(glob, -> { context.variables_hash })
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end
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end
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def worktree_paths(context)
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return [] unless context.project
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if @top_level_only
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context.top_level_worktree_paths
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else
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context.all_worktree_paths
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end
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end
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def exact_matches?(paths, exact_globs)
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exact_globs.any? do |glob|
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paths.bsearch { |path| glob <=> path }
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end
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end
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def pattern_matches?(paths, pattern_globs)
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comparisons = 0
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pattern_globs.any? do |glob|
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paths.any? do |path|
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comparisons += 1
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comparisons > MAX_PATTERN_COMPARISONS || pattern_match?(glob, path)
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end
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end
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end
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def pattern_match?(glob, path)
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File.fnmatch?(glob, path, File::FNM_PATHNAME | File::FNM_DOTMATCH | File::FNM_EXTGLOB)
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end
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# matches glob patterns that only match files in the top level directory
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def top_level_glob?(glob)
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!glob.include?('/') && !glob.include?('**')
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end
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# matches glob patterns that have no metacharacters for File#fnmatch?
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def exact_glob?(glob)
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!glob.include?('*') && !glob.include?('?') && !glob.include?('[') && !glob.include?('{')
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end
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end
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end
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end
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end
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