Thursday, February 16, 2006
Add dependency support to custom rake tasks
I previously wrote about creating a NUnitTask for Rake. The NUnitTask is based on the PackageTask that comes standard with Rake. I assumed that the PackageTask would have support for adding dependencies at construction time. This turned out to be a false assumption. To add a PackageTask and dependency for that task they need to be declared separately.
Rake::PackageTask.new "foo","1.2.3" do |pkg|I had expected it to work much like a standard task and dependency.
pkg.need_zip = true
pkg.package_files.include("build_helpers/*.rb")
end
task :package => :test
#this will not workUpon discovery, I decided to alter NUnitTask to take a dependency in the expected manner. The only change required is to alter the assignment of the name variable.
Rake::PackageTask.new "foo","1.2.3" => :init do |pkg|
pkg.need_zip = true
pkg.package_files.include("build_helpers/*.rb")
end
def initialize(name=:nunit)Becomes
@name = name
..
end
def initialize(params=:nunit)Hopefully, Jim Weirich can add the same capability to the next version of the Rake Tasks.
@name = case params
when Hash
task params.keys[0] => params[params.keys[0]]
params.keys[0]
else
params
end
..
end
Comments:
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Hi Jay,
after reading your posts about rake I've started to convert my nant task in rake.
I've create a CscTask and for the dependencies problem I've adopted this solution:
require 'rake'
require 'rake/tasklib'
module Rake
class CscTask < TaskLib
# Name of the main, top level task. (default is :csc)
attr_accessor :name, :task_dependencies, :out, :target, :sources, :resources, :references, :lib
# Create an Csc task named csc. Default task name is +csc+.
def initialize(name=:csc) # :yield: self
@name = name
@path_to_console = "csc.exe"
yield self if block_given?
define
end
# Create an Csc task named csc. Default task name is +csc+.
def initialize(name=:csc, task_dependencies=[]) # :yield: self
@task_dependencies = task_dependencies
@name = name
@path_to_console = "csc.exe"
yield self if block_given?
define
end
# Create the tasks defined by this task lib.
def define
task name => task_dependencies do
sh "#{@path_to_console} #{out} #{target} #{sources} #{resources} #{references} #{lib}"
end
self
end
def out
"/out:#{@out}" if @out
end
def target
"/target:#{@target}" if @target
end
def sources
"#{@sources.join(" ")}" if @sources
end
def resources
#"/res:#{@resources}" if @resources
end
def references
"/r:#{@references.join(";")}" if @references
end
def lib
"/lib:#{@lib}" if @lib
end
end
end
after reading your posts about rake I've started to convert my nant task in rake.
I've create a CscTask and for the dependencies problem I've adopted this solution:
require 'rake'
require 'rake/tasklib'
module Rake
class CscTask < TaskLib
# Name of the main, top level task. (default is :csc)
attr_accessor :name, :task_dependencies, :out, :target, :sources, :resources, :references, :lib
# Create an Csc task named csc. Default task name is +csc+.
def initialize(name=:csc) # :yield: self
@name = name
@path_to_console = "csc.exe"
yield self if block_given?
define
end
# Create an Csc task named csc. Default task name is +csc+.
def initialize(name=:csc, task_dependencies=[]) # :yield: self
@task_dependencies = task_dependencies
@name = name
@path_to_console = "csc.exe"
yield self if block_given?
define
end
# Create the tasks defined by this task lib.
def define
task name => task_dependencies do
sh "#{@path_to_console} #{out} #{target} #{sources} #{resources} #{references} #{lib}"
end
self
end
def out
"/out:#{@out}" if @out
end
def target
"/target:#{@target}" if @target
end
def sources
"#{@sources.join(" ")}" if @sources
end
def resources
#"/res:#{@resources}" if @resources
end
def references
"/r:#{@references.join(";")}" if @references
end
def lib
"/lib:#{@lib}" if @lib
end
end
end
Hi Jay.
I ran into this as well. I especially have a problem where my PackageTask does a Dir.chdir("somedir") inside it. I try to make that "somdir" exist via a directory task. But I can't make the package task depend on it. Even your trick with separating the package task from the task :package didn't work.
Maybe I have to create a custom PackageTask.
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I ran into this as well. I especially have a problem where my PackageTask does a Dir.chdir("somedir") inside it. I try to make that "somdir" exist via a directory task. But I can't make the package task depend on it. Even your trick with separating the package task from the task :package didn't work.
Maybe I have to create a custom PackageTask.
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