63 lines
1.3 KiB
Ruby
63 lines
1.3 KiB
Ruby
# frozen_string_literal: true
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module Gitlab
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module Utils
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module InlineHash
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extend self
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# Transforms a Hash into an inline Hash by merging its nested keys.
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#
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# Input
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#
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# {
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# 'root_param' => 'Root',
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# 12 => 'number',
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# symbol: 'symbol',
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# nested_param: {
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# key: 'Value'
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# },
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# 'very' => {
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# 'deep' => {
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# 'nested' => {
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# 12 => 'Deep nested value'
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# }
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# }
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# }
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# }
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#
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#
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# Result
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#
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# {
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# 'root_param' => 'Root',
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# 12 => 'number',
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# symbol: symbol,
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# 'nested_param.key' => 'Value',
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# 'very.deep.nested.12' => 'Deep nested value'
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# }
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#
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def merge_keys(hash, prefix: nil, connector: '.')
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result = {}
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pairs =
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if prefix
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base_prefix = "#{prefix}#{connector}"
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hash.map { |key, value| ["#{base_prefix}#{key}", value] }
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else
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hash.to_a
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end
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until pairs.empty?
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key, value = pairs.shift
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if value.is_a?(Hash)
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value.each { |k, v| pairs.unshift ["#{key}#{connector}#{k}", v] }
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else
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result[key] = value
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end
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end
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result
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end
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end
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end
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end
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