86 lines
2.7 KiB
Ruby
86 lines
2.7 KiB
Ruby
# frozen_string_literal: true
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#
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# Author:: Enrico Stahn <mail@enricostahn.com>
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#
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# Copyright 2014, Zanui, <engineering@zanui.com.au>
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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module GitHubChangelogGenerator
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# A Reader to read an existing ChangeLog file and return a structured object
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#
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# Example:
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# reader = GitHubChangelogGenerator::Reader.new
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# content = reader.read('./CHANGELOG.md')
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class Reader
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def initialize(options = {})
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defaults = {
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heading_level: "##",
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heading_structures: [
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/^## \[(?<version>.+?)\]\((?<url>.+?)\)( \((?<date>.+?)\))?$/,
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/^## (?<version>.+?)( \((?<date>.+?)\))?$/
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]
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}
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@options = options.merge(defaults)
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@heading_level = @options[:heading_level]
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@heading_structures = @options[:heading_structures]
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end
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# Parse a single heading and return a Hash
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#
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# The following heading structures are currently valid:
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# - ## [v1.0.2](https://github.com/zanui/chef-thumbor/tree/v1.0.1) (2015-03-24)
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# - ## [v1.0.2](https://github.com/zanui/chef-thumbor/tree/v1.0.1)
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# - ## v1.0.2 (2015-03-24)
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# - ## v1.0.2
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#
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# @param [String] heading Heading from the ChangeLog File
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# @return [Hash] Returns a structured Hash with version, url and date
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def parse_heading(heading)
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captures = { "version" => nil, "url" => nil, "date" => nil }
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@heading_structures.each do |regexp|
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matches = Regexp.new(regexp).match(heading)
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if matches
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captures.merge!(Hash[matches.names.zip(matches.captures)])
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break
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end
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end
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captures
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end
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# Parse the given ChangeLog data into a list of Hashes
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#
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# @param [String] data File data from the ChangeLog.md
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# @return [Array<Hash>] Parsed data, e.g. [{ 'version' => ..., 'url' => ..., 'date' => ..., 'content' => ...}, ...]
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def parse(data)
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sections = data.split(/^## .+?$/)
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headings = data.scan(/^## .+?$/)
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headings.each_with_index.map do |heading, index|
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section = parse_heading(heading)
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section["content"] = sections.at(index + 1)
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section
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end
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end
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def read(file_path)
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parse File.read(file_path)
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end
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end
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end
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