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require 'erb'
require 'fileutils'
require_relative '../options'
require_relative '../log'
module RCM
# Managing files
class File
attr_reader :id, :path
include Options
include Log
def initialize(path)
@id = "#{self.class}(#{path})"
@path = path
end
def to_s = id
def content(text = nil)
return @content if text.nil?
@content = text.instance_of?(Array) ? text.join("\n") : text
end
def create_parent_directory = @create_parent = true
def from_sourcefile = @from_sourcefile = true
def from_template = @from_template = true
def ensure_line(line) = @ensure_line = line
def evaluate!
return evaluate_ensure_line! unless @ensure_line.nil?
write_content!(real_content)
end
private
def evaluate_ensure_line!
return write_content!(@ensure_line) unless ::File.file?(@path)
lines = ::File.readlines(@path, chomp: true)
return if lines.include?(@ensure_line)
::File.open(@path, 'a') do |fd|
fd.puts(@ensure_line)
end
end
def write_content!(text)
create_parent_directory!
debug text if option :debug
info "Creating file #{@path}"
tmp_path = "#{@path}.tmp"
::File.write(tmp_path, text)
::File.rename(tmp_path, @path)
end
def create_parent_directory!
dirname = ::File.dirname(@path)
return unless !::File.directory?(dirname) && @create_parent
info "Creating parent directory #{dirname}"
FileUtils.mkdir_p(dirname)
end
def real_content
text = @from_sourcefile ? ::File.read(@content) : @content
@from_template ? ERB.new(text).result : text
end
end
# Add file keyword to the DSL
class DSL
def file(path, &block)
return unless @conds_met
p :FOO, path
f = File.new(path)
f.content(f.instance_eval(&block))
self << f
f
end
end
end
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