Class: Roll::Environment::Index

Inherits:
Object
  • Object
show all
Includes:
Enumerable
Defined in:
lib/roll/environment.rb

Overview

Index tracks the name and location of each library in an environment. – TODO: Using a hash table means un-order, fix? ++

Instance Method Summary collapse

Constructor Details

#initialize(name = nil) ⇒ Index

Instantiate environment.



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# File 'lib/roll/environment.rb', line 86

def initialize(name=nil)
  @name  = name || Environment.current
  @table = Hash.new{ |h,k| h[k] = [] }
  reload
end

Instance Method Details

#each(&block) ⇒ Object

Look through the environment table.



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# File 'lib/roll/environment.rb', line 120

def each(&block)
  @table.each(&block)
end

#file ⇒ Object

Environment file (full-path).



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# File 'lib/roll/environment.rb', line 98

def file
  @file ||= ::Config.find_config('roll', name, 'index').first
end

#name ⇒ Object

Current ledger name.



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# File 'lib/roll/environment.rb', line 93

def name
  @name
end

#reload ⇒ Object

Load the environment file.



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# File 'lib/roll/environment.rb', line 103

def reload
  if file && File.exist?(file)
    File.readlines(file).each do |line|
      line = line.strip
      next if line.empty?
      name, path = *line.split(/\s+/)
      @table[name.strip] << path.strip
    end
  end
end

#reset(index) ⇒ Object 



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# File 'lib/roll/environment.rb', line 115

def reset(index)
  @table = index
end

#save ⇒ Object

Save environment file.



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# File 'lib/roll/environment.rb', line 147

def save
  out = to_s
  #max = @table.map{ |name, paths| name.size }.max
  #@table.map do |name, paths|
  #  paths.each do |path|
  #    out << "%-#{max}s %s\n" % [name, path]
  #  end
  #end
  file = File.join(::Config::CONFIG_HOME, 'roll', name, 'index')
  if File.exist?(file)
    data = File.read(file)
    if out != data
      File.open(file, 'w'){ |f| f << out }
      #puts "updated: #{name}"
      true
    else
      #puts "current: #{name}"
      false
    end
  else
    dir = File.dirname(file)
    FileUtils.mkdir_p(dir) unless File.exist?(dir)
    File.open(file, 'w'){ |f| f << out }
    #puts "created: #{name}"
    true
  end
  @file = file
end

#size ⇒ Object

Number of entries.



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# File 'lib/roll/environment.rb', line 125

def size
  @table.size
end

#to_h ⇒ Object 



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# File 'lib/roll/environment.rb', line 130

def to_h
  @table.dup
end

#to_s ⇒ Object 



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# File 'lib/roll/environment.rb', line 135

def to_s
  out = ""
  max = @table.map{ |name, paths| name.size }.max
  @table.map do |name, paths|
    paths.each do |path|
      out << "%-#{max}s %s\n" % [name, path]
    end
  end
  out
end