Class: Waw::Wawgen::Create

Inherits:
Object show all
Defined in:
lib/waw/wawgen/create.rb

Overview

Implementation of ‘waw create’

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Create

Creates a command instance



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# File 'lib/waw/wawgen/create.rb', line 15

def initialize
  @layout = 'empty'
  @force = false
end

Instance Attribute Details

#force ⇒ Object (readonly)

Force overrides?



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# File 'lib/waw/wawgen/create.rb', line 12

def force
  @force
end

#layout ⇒ Object (readonly)

Which layout



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# File 'lib/waw/wawgen/create.rb', line 9

def layout
  @layout
end

Instance Method Details

#exit(msg) ⇒ Object

Puts an error message and exits



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# File 'lib/waw/wawgen/create.rb', line 95

def exit(msg)
  puts msg
  Kernel.exit(-1)
end

#generate(project) ⇒ Object

Generates the project



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# File 'lib/waw/wawgen/create.rb', line 148

def generate(project)
  # A small debug message and we start
  puts "Generating project with names #{project.upname} inside #{project.lowname} using layout #{layout}"
  
  # 1) Create the output folder if it not exists
  if File.exists?(project.folder) and not(force)
    exit("The project folder #{project.lowname} already exists. Remove it first")
  else
    FileUtils.rm_rf project.folder if File.exists?(project.folder)
    FileUtils.mkdir_p project.folder
  end

  generate_layout(project, layout)
  FileUtils.chmod 0755, File.join(project.root, 'config.ru')
end

#generate_layout(project, layout) ⇒ Object

Generates a given layout for a specific project



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# File 'lib/waw/wawgen/create.rb', line 125

def generate_layout(project, layout)
  # Locate the layout folder
  layout_folder = File.join(File.dirname(__FILE__), '..', '..', '..', 'layouts', layout)
  puts File.expand_path(layout_folder)
  exit("Unknown layout #{layout}") unless File.exists?(layout_folder)
  
  # Handle dependencies
  dependencies_file = File.join(layout_folder, 'dependencies')
  if File.exists?(dependencies_file)
    File.readlines(dependencies_file).each do |line|
      next if /^#/ =~ (line = line.strip)
      line.split(/\s/).each do |word| 
        generate_layout(project, word)
      end
    end
  end
  
  # Let recursive generation occur
  puts "Generating recursively project, #{layout_folder}, #{project.folder}"
  generate_recursively(project, layout_folder, project.folder)
end

#generate_recursively(project, layout_folder, target_folder) ⇒ Object 



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# File 'lib/waw/wawgen/create.rb', line 100

def generate_recursively(project, layout_folder, target_folder)
  # Generate files now
  Dir.new(layout_folder).each do |file|
    next if ['.', '..', 'dontforgetme'].include?(file)
    next if 'dependencies'==file
    target = File.join(target_folder, file.gsub('project', project.lowname))
    puts "Generating #{target} from #{layout}/#{file}"

    if File.directory?(source=File.join(layout_folder, file))
      FileUtils.mkdir_p target unless File.exists?(target)
      generate_recursively(project, source, target)
    else
      File.open(target, 'w') do |io|
        if /jquery/ =~ file
          io << File.read(File.join(layout_folder, file))
        else
          context = {"project" => project}
          io << WLang.file_instantiate(File.join(layout_folder, file), context, 'wlang/active-string', :parentheses).to_s
        end
      end
    end
  end
end

#options ⇒ Object

Parses commandline options provided as an array of Strings.



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# File 'lib/waw/wawgen/create.rb', line 21

def options
  @options  ||= OptionParser.new do |opt|
    opt.program_name = File.basename $0
    opt.version = WLang::VERSION
    opt.release = nil
    opt.summary_indent = ' ' * 4
    banner = <<-EOF
      # Usage waw create [options] ProjectName

      # Creates an initial waw project structure
    EOF
    opt.banner = banner.gsub(/[ \t]+# /, "")
    
    opt.separator nil
    opt.separator "Options:"
    
    opt.on("--force", "-f", "Erase any exsting file on conflict") do |value|
      @force = true
    end

    opt.on("--layout=LAYOUT", "-l", "Use a specific waw layout (default empty)") do |value|
      @layout = value
    end

    opt.on("--verbose", "-v", "Display extra progress as we parse.") do |value|
      @verbosity = 2
    end

    # No argument, shows at tail.  This will print an options summary.
    # Try it and see!
    opt.on_tail("-h", "--help", "Show this message") do
      puts options
      exit
    end

    # Another typical switch to print the version.
    opt.on_tail("--version", "Show version") do
      puts "waw version " << Waw::VERSION << " (c) University of Louvain, Bernard & Louis Lambeau"
      exit
    end
    
    opt.separator nil
  end
end

#run(argv) ⇒ Object

Runs the command



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# File 'lib/waw/wawgen/create.rb', line 67

def run(argv)
  # parse options
  rest = options.parse!(argv)
  if rest.length != 1
    puts options
    exit(-1)
  end
  
  # check project name
  project_name = rest[0]
  exit("Invalid project name #{project_name}, must start with [a-zA-Z]") unless /^[a-zA-Z]/ =~ project_name
  if project_name =~ /^[a-z]/
    project_name = (project_name[0...1].upcase + project_name[1..-1]) 
    puts "Warning: using #{project_name} as project name for ruby needs..."
  end
  
  # create project
  project = ::Waw::Wawgen::Project.new(project_name)
  begin
    generate(project)
  rescue WLang::Error => ex
    puts ex.message
    puts ex.wlang_backtrace.join("\n")
    puts ex.backtrace.join("\n")
  end
end