Class: VResource::FileSystemProvider

Inherits:
Object
  • Object
show all
Defined in:
lib/vresource/file_system_provider.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(directories = File.expand_path('.')) ⇒ FileSystemProvider

Returns a new instance of FileSystemProvider.



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# File 'lib/vresource/file_system_provider.rb', line 5

def initialize directories = File.expand_path('.')
  @directories = Array(directories).collect{|path| File.expand_path path}
end

Instance Attribute Details

#directories ⇒ Object

Returns the value of attribute directories.



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# File 'lib/vresource/file_system_provider.rb', line 3

def directories
  @directories
end

Instance Method Details

#class_delete(class_name) ⇒ Object 



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# File 'lib/vresource/file_system_provider.rb', line 44

def class_delete class_name
  path = real_class_path class_name
  File.delete path if path
end

#class_exist?(class_name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/vresource/file_system_provider.rb', line 40

def class_exist? class_name
  real_class_path(class_name) != nil
end

#class_get(class_name) ⇒ Object 



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# File 'lib/vresource/file_system_provider.rb', line 9

def class_get class_name
  path = ensure_exist!(real_class_path(class_name))
  
  if File.directory? path
    "module #{File.basename(path)}; end;"
  else
    File.read path
  end      
end

#class_set(class_name, data, directory_for_class_file = nil) ⇒ Object

It updates existing class, if class doesn’t exist it creates one in directory provided by filter



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# File 'lib/vresource/file_system_provider.rb', line 20

def class_set class_name, data, directory_for_class_file = nil
  directory_for_class_file ||= Dir.getwd
  directory_for_class_file = File.expand_path directory_for_class_file
  unless directories.include? directory_for_class_file
    raise "Dirctories should include '#{directory_for_class_file}'!"
  end
  
  path = real_class_path class_name      
  unless path
    path = class_to_files(class_name).select{|f| f.include?(directory_for_class_file)}.first
    dir = path.sub(/\w+\.rb/, "")
    FileUtils.mkdir dir unless dir.empty? or File.exist? dir      
  end
  
  length = File.write path, data
  
  reloader.remember_file path
  return length
end

#class_to_virtual_file(class_name) ⇒ Object

Different Providers can use different class path interpretation. So we return virtual path only if this path really exist.



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# File 'lib/vresource/file_system_provider.rb', line 124

def class_to_virtual_file class_name
  path = ensure_exist!(real_class_path(class_name), "Class '#{class_name}' doesn't Exist!")      
  File.expand_path path
end

#reloader ⇒ Object 



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# File 'lib/vresource/file_system_provider.rb', line 130

def reloader
  @reloader ||= FileSystemReloader.new directories
end

#resource_delete(class_name, resource_name) ⇒ Object 



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# File 'lib/vresource/file_system_provider.rb', line 61

def resource_delete class_name, resource_name
  path = real_resource_path class_name, resource_name
  File.delete path if path      
end

#resource_exist?(class_name, resource_name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/vresource/file_system_provider.rb', line 86

def resource_exist? class_name, resource_name
  class_path = ensure_exist!(real_class_path(class_name))
  
  real_resource_path(class_name, resource_name) != nil
end

#resource_get(class_name, resource_name) ⇒ Object

First search for “./class_name.resource_name” files And then search for “./class_name.res/resource_name” files



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# File 'lib/vresource/file_system_provider.rb', line 55

def resource_get class_name, resource_name
  path = ensure_exist!(real_resource_path(class_name, resource_name))
  
  File.read path
end

#resource_set(class_name, resource_name, data) ⇒ Object

It can only update existing resource, it can’t create a new one First search for the same resource and owerwrites it If such resource doesn’t exists writes to “./class_name.res/resource_name” file.



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# File 'lib/vresource/file_system_provider.rb', line 70

def resource_set class_name, resource_name, data
  class_path = ensure_exist!(real_class_path(class_name))
  
  path = real_resource_path class_name, resource_name
  unless path
    class_path = class_path.sub(/\.rb$/, "")
    dir = "#{class_path}.res"        
    FileUtils.mkdir dir unless File.exist? dir
    path = "#{dir}/#{resource_name}"
  end
  
  length = File.write path, data
  reloader.remember_file path
  return length
end