Class: Linecook::Cookbook

Inherits:
Object
  • Object
show all
Defined in:
lib/linecook/cookbook.rb

Constant Summary collapse

MANIFEST_KEY = 
'manifest'
PATHS_KEY = 
'paths'
GEMS_KEY = 
'gems'
REWRITE_KEY = 
'rewrite'
PATTERNS = 
[
  ['attributes', '**/*{.rb,.yaml,.yml,.json}', true],
  ['files',      '**/*'],
  ['recipes',    '**/*.rb', true],
  ['templates',  '**/*']
]

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(config = {}, project_dir = '.') ⇒ Cookbook

Returns a new instance of Cookbook.



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# File 'lib/linecook/cookbook.rb', line 52

def initialize(config={}, project_dir='.')
  @project_dir = project_dir
  @config = config
end

Instance Attribute Details

#config ⇒ Object (readonly)

Returns the value of attribute config.



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# File 'lib/linecook/cookbook.rb', line 50

def config
  @config
end

#project_dir ⇒ Object (readonly)

Returns the value of attribute project_dir.



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# File 'lib/linecook/cookbook.rb', line 49

def project_dir
  @project_dir
end

Class Method Details

.config_file(project_dir = '.') ⇒ Object 



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# File 'lib/linecook/cookbook.rb', line 7

def config_file(project_dir='.')
  Dir.glob(File.join(project_dir, '{C,c}ookbook')).first
end

.gems ⇒ Object 



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# File 'lib/linecook/cookbook.rb', line 26

def gems
  return [] unless Object.const_defined?(:Gem)
  
  Gem.source_index.latest_specs.select do |spec|
    config_file(spec.full_gem_path) != nil
  end.collect do |spec|
    spec.name
  end
end

.init(project_dir = '.') ⇒ Object 



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# File 'lib/linecook/cookbook.rb', line 22

def init(project_dir='.')
  setup config_file(project_dir), project_dir
end

.setup(config = {}, project_dir = '.') ⇒ Object 



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# File 'lib/linecook/cookbook.rb', line 11

def setup(config={}, project_dir='.')
  unless config.kind_of?(Hash)
    config = Utils.load_config(config)
  end
  
  config[PATHS_KEY] ||= [project_dir]
  config[GEMS_KEY]  ||= gems
  
  new(config, project_dir)
end

Instance Method Details

#full_gem_paths ⇒ Object 



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# File 'lib/linecook/cookbook.rb', line 73

def full_gem_paths
  return [] if gems.empty?
  specs = latest_specs
  
  gems.collect do |name| 
    spec = specs[name] or raise "no such gem: #{name.inspect}"
    spec.full_gem_path
  end
end

#gems ⇒ Object 



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# File 'lib/linecook/cookbook.rb', line 61

def gems
  Utils.arrayify config[GEMS_KEY]
end

#glob(*paths) ⇒ Object 



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# File 'lib/linecook/cookbook.rb', line 103

def glob(*paths)
  manifest = Hash.new {|hash, key| hash[key] = {} }
  
  paths.each do |path|
    PATTERNS.each do |(type, glob, chomp_extname)|
      resource_dir = File.expand_path(File.join(path, type), project_dir)
      pattern = File.join(resource_dir, glob)
      
      Dir.glob(pattern).each do |full_path|
        next unless File.file?(full_path)
        
        name = relative_path(resource_dir, full_path)
        name.chomp!(File.extname(full_path)) if chomp_extname
        
        manifest[type][name] = full_path
      end
    end
  end
  
  manifest
end

#manifest ⇒ Object 



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# File 'lib/linecook/cookbook.rb', line 125

def manifest
  manifest = glob(*(full_gem_paths + paths))
  
  if overrides
    manifest = Utils.deep_merge(manifest, overrides)
  end
  
  manifest.each_key do |key|
    manifest[key] = rewrite manifest[key]
  end
  
  manifest
end

#merge(config = {}) ⇒ Object 



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# File 'lib/linecook/cookbook.rb', line 139

def merge(config={})
  duplicate = dup
  dup.config.merge!(config)
  dup
end

#overrides ⇒ Object 



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# File 'lib/linecook/cookbook.rb', line 69

def overrides
  config[MANIFEST_KEY]
end

#paths ⇒ Object 



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# File 'lib/linecook/cookbook.rb', line 57

def paths
  Utils.arrayify config[PATHS_KEY]
end

#rewrite(manifest) ⇒ Object 



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# File 'lib/linecook/cookbook.rb', line 83

def rewrite(manifest)
  replacements = {}
  
  rewrites.each_pair do |pattern, substitution|
    manifest.keys.each do |key|
      replacement = key.sub(pattern, substitution)
      next if key == replacement
      raise "multiple replacements for: #{key}" if replacements.has_key?(key)
      
      replacements[key] = replacement
    end
  end if rewrites
  
  replacements.each do |key, replacement|
    manifest[replacement] = manifest.delete(key)
  end
  
  manifest
end

#rewrites ⇒ Object 



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# File 'lib/linecook/cookbook.rb', line 65

def rewrites
  config[REWRITE_KEY]
end