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# frozen_string_literal: true
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1
require 'thor'
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1
require 'gempath'
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1
module Gempath
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class CLI < Thor
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class << self
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def exit_on_failure?
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true
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end
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end
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1
def help(*)
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super
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end
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# Global options available to all commands
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class_option :help, aliases: '-h', type: :boolean, desc: 'Display usage information'
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1
class_option :filepath, aliases: '-f', type: :string,
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desc: 'Path to Gemfile.lock (default: ./Gemfile.lock)',
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default: 'Gemfile.lock'
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desc 'analyze [OPTIONS]', 'Analyze dependencies in Gemfile.lock'
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method_option :name, aliases: '-n', type: :string,
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desc: 'Name of the gem to analyze'
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long_desc <<~LONGDESC
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`gempath analyze` analyzes dependencies and relationships in your Gemfile.lock.
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When run without options, it shows information for all gems.
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When given a gem name with --name, it shows detailed information just for that gem.
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For each gem, it shows:\n
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* Version being used\n
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* All direct dependencies and their versions\n
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* Source (rubygems.org, git, or path)\n
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* Direct consumers (gems that depend on it)\n
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* All dependency paths leading to this gem\n
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Examples:
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# Analyze all gems using Gemfile.lock in current directory:
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gempath analyze
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# Analyze aws-sdk-core using Gemfile.lock in current directory:
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gempath analyze --name aws-sdk-core
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# Analyze rails using a specific Gemfile.lock:
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gempath analyze --name rails --filepath /path/to/Gemfile.lock
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LONGDESC
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def analyze(*)
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# Thor will handle unknown arguments automatically
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analyzer = Gempath::Analyzer.new(options[:filepath])
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result = analyzer.analyze(options[:name])
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puts JSON.pretty_generate(result)
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rescue Gempath::Error => e
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raise Thor::Error,
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"#{e.message}\n\nTo specify a different Gemfile.lock location:\n gempath analyze -f /path/to/Gemfile.lock"
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end
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desc 'generate [OPTIONS]', 'Generate a minimal Gemfile for a gem and its dependencies'
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method_option :name, aliases: '-n', type: :string, required: true,
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desc: 'Name of the gem to generate Gemfile for'
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method_option :filepath, aliases: '-f', type: :string, default: 'Gemfile.lock',
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desc: 'Path to Gemfile.lock (default: ./Gemfile.lock)'
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method_option :ruby_version, aliases: '-r', type: :string,
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desc: 'Ruby version to use (default: current Ruby version)'
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long_desc <<~LONGDESC
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`gempath generate` creates a minimal working Gemfile for a gem and its dependencies.
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This is useful for troubleshooting gem compatibility issues by creating an isolated
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environment with just the gem and its dependencies.
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The generated Gemfile will include:
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* Ruby version (if specified)
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* Source information (e.g. rubygems.org or custom gem server)
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* The target gem and its version
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* All direct dependencies and their versions
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* Any git or path-based dependencies
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Examples:
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# Generate Gemfile for aws-sdk-core using current directory's Gemfile.lock:
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gempath generate --name aws-sdk-core
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# Generate Gemfile for rails with specific Ruby version:
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gempath generate --name rails --ruby-version 3.2.0
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# Generate Gemfile using dependencies from a specific Gemfile.lock:
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gempath generate --name puppet --filepath /path/to/Gemfile.lock
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LONGDESC
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no_commands do
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def group_gems_by_source(_name, _version, source_info)
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59
then: 59
else: 0
case source_info&.dig('source', 'type')
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when: 0
when 'git'
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[:git, source_info['source']['remote']]
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when: 1
when 'path'
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1
[:path, source_info['source']['remote']]
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when: 58
when 'rubygems'
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58
source = source_info['source']['remotes'].first
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58
then: 0
else: 58
source == 'https://rubygems.org' ? :default : [:source, source]
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else: 0
else
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:default
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end
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end
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end
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def generate(*)
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6
analyzer = Gempath::Analyzer.new(options[:filepath])
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result = analyzer.analyze(options[:name])
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gem_info = result[options[:name]]
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then: 2
else: 4
raise Thor::Error, "Gem '#{options[:name]}' not found in #{options[:filepath]}" if gem_info.nil?
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# Start building the Gemfile content
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4
gemfile_content = []
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# Add Ruby version if specified
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4
then: 1
else: 3
if options[:ruby_version]
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gemfile_content << "ruby '#{options[:ruby_version]}'"
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gemfile_content << ''
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end
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# Default source is always rubygems.org
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gemfile_content << "source 'https://rubygems.org'"
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gemfile_content << ''
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# Group gems by their source
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gems_by_source = {}
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# Helper to add a gem to a source group
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add_to_group = lambda { |name, version, source_info|
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source_key = group_gems_by_source(name, version, source_info)
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gems_by_source[source_key] ||= []
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gems_by_source[source_key] << [name, version, source_info]
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}
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# Add main gem to its source group
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add_to_group.call(gem_info['name'], gem_info['version'], gem_info)
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# Add dependencies to their source groups
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then: 4
else: 0
gem_info['dependencies']&.each do |dep_name, dep_version|
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dep_result = analyzer.analyze(dep_name)
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dep_info = dep_result[dep_name]
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add_to_group.call(dep_name, dep_version, dep_info)
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end
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# Output gems grouped by source
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4
gems_by_source.each do |source_key, gems|
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7
else: 0
case source_key
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when :default
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when: 0
# Output default source gems directly
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gems.each do |name, version, _|
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gemfile_content << "gem '#{name}', '#{version}'"
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end
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else: 0
then: 0
gemfile_content << '' unless gems.empty?
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when: 7
when Array
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source_type, source_value = source_key
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else: 0
case source_type
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when: 6
when :source
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gemfile_content << "source '#{source_value}' do"
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gems.each do |name, version, _|
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gemfile_content << " gem '#{name}', '#{version}'"
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end
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gemfile_content << 'end'
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gemfile_content << ''
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when: 0
when :git
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gemfile_content << "git '#{source_value}' do"
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gems.each do |name, _version, _|
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gemfile_content << " gem '#{name}'"
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end
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gemfile_content << 'end'
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gemfile_content << ''
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when: 1
when :path
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1
gems.each do |name, _, _|
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gemfile_content << "gem '#{name}', path: '#{source_value}'"
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end
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1
gemfile_content << ''
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end
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end
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end
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puts gemfile_content.join("\n").strip
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rescue Gempath::Error => e
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raise Thor::Error,
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"#{e.message}\n\nTo specify a different Gemfile.lock location:\n gempath generate -f /path/to/Gemfile.lock"
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end
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default_task :help
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end
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end
