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101 lines
3.1 KiB
Ruby
101 lines
3.1 KiB
Ruby
#!/usr/bin/env nix-shell
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#! nix-shell -i ruby -p "ruby.withPackages (ps: with ps; [ rugged ])" coreutils fzf
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# frozen_string_literal: true
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# A script that recreates `git format-patch` subcommand but with a few more
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# specific use case for this project.
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require 'fileutils'
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require 'logger'
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require 'optparse'
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require 'rugged'
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def to_kebab_case(string)
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string.gsub(/\s+/, '-') # Replace all spaces with dashes.
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.gsub(/[^a-zA-Z0-9-]/, '') # Remove all non-alphanumerical (and dashes) characters.
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.gsub(/-+/, '-') # Reduce all dashes into only one.
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.gsub(/^-|-+$/, '') # Remove all leading and trailing dashes.
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.downcase
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end
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CONTENT_DIRECTORY = 'content'
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PATCHES_SUBDIRECTORY = 'assets/patches'
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options = {
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'current-branch': false,
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'prefix': 'posts/',
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'repo': '.'
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}
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logger = Logger.new($stdout)
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logger.level = Logger::WARN
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OptionParser.new do |opts|
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opts.on('-c', '--current-branch', 'Select the current branch.') do
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options['current-branch'] = true
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end
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opts.on('-p', '--prefix PREFIX',
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<<~HELP
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Sets the prefix corresponding to a subdirectory inside
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the content directory.
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HELP
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) do |prefix|
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options['prefix'] = prefix
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end
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opts.on('--repo REPO', String, 'Select the Git repository of the workspace') do |repo|
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options['repo'] = repo
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end
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opts.on('-v', '--[no-]verbose', 'Make the program print results') do |v|
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options['verbose'] = v
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end
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end.parse!
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logger.level = Logger::INFO if options['verbose']
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code_workspace = Rugged::Repository.discover(options['repo'])
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if options['current-branch']
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selected_branch = code_workspace.branches[code_workspace.head.name].name
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raise %(Current branch is not a '#{options['prefix']}' subbranch.) unless selected_branch.start_with? options[:prefix]
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else
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branches = code_workspace.branches
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.each_name(:local)
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.select { |branch| branch.start_with? options[:prefix] }
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.sort
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raise "No branches with the prefix '#{options['prefix']}'" if branches.empty?
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selected_branch = `echo -e "#{branches.join '\n'}" | fzf`.strip
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end
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selected_branch_object = code_workspace.branches[selected_branch]
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repo_walker = Rugged::Walker.new(code_workspace)
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repo_walker.push(selected_branch_object.target_id)
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repo_walker.sorting(Rugged::SORT_DATE | Rugged::SORT_REVERSE)
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# Delete the patches directory. This makes it completely dangerous.
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patches_dir = File.expand_path("#{selected_branch}/#{PATCHES_SUBDIRECTORY}", CONTENT_DIRECTORY)
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FileUtils.rmtree(patches_dir, secure: true)
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logger.info "Removing '#{patches_dir}'"
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FileUtils.mkdir_p(patches_dir)
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logger.info "Creating directory '#{patches_dir}'"
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repo_walker.each_with_index do |commit, index|
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commit_message = to_kebab_case commit.message
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commit_index = (index + 1).to_s.rjust(4, '0')
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patchfile = File.expand_path(
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"#{commit_index}-#{commit_message}.patch",
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patches_dir
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)
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File.open(patchfile, 'w') do |f|
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logger.info "Creating patch file '#{patchfile}' from commit '#{commit.tree_id}'"
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f.write commit.diff.patch
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end
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end
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