Class: Planter::Spade

Inherits:
Object
  • Object
show all
Defined in:
lib/sapling/planter.rb

Overview

Utilities for editing specific parts of a tree.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(file) ⇒ Spade

Returns a new instance of Spade



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# File 'lib/sapling/planter.rb', line 61

def initialize(file)
  @file = file
end

Instance Attribute Details

#file=(value) ⇒ Object (writeonly)

The file we parse into a tree



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# File 'lib/sapling/planter.rb', line 59

def file=(value)
  @file = value
end

Instance Method Details

#dig(branch_no) ⇒ Object

Function for displaying a single branch in debug mode. We also always display the trunk, since otherwise it's displayed a single time then gone forever (until next time).

Parameters:

  • branch_no (Integer) —

    The number of the branch to be displayed.



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# File 'lib/sapling/planter.rb', line 87

def dig(branch_no)
  branch = @plot.branches[branch_no]

  Dialogue.display_trunk(@plot.trunk, true)
  Dialogue.display_branch(branch, branch_no, true)

  response = get_response(branch)
  to_branch = parse_response(response, branch_no)

  return to_branch
end

#get_response(branch) ⇒ Integer

Get a response for the displayed branch

Parameters:

  • branch (Hash) —

    A branch data set

Returns:

  • (Integer) —

    the next branch



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# File 'lib/sapling/planter.rb', line 103

def get_response(branch)
  total_branches = @plot.branches.count - 1
  valid_options = ["1-#{total_branches}","t","a","b","x","l","s","q"]
  print_options = valid_options.join(",")

  print "\n[#{print_options}]> "
  STDOUT.flush
  response = STDIN.gets.chomp.to_s.downcase

  until valid_options.include?(response) or response.to_i.between?(1,total_branches)
    print "[## Invalid response. "
    print "Valid options are #{print_options}"
    print "\n[#{print_options}]> "
    response = STDIN.gets.chomp.to_s.downcase
  end

  return response
end

#parse_response(response, branch_no) ⇒ Integer

Parse the response from get_response

Parameters:

  • response (String) —

    The option selected

  • branch_no (Integer) —

    The currently-displayed branch

Returns:

  • (Integer) —

    the branch to display



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# File 'lib/sapling/planter.rb', line 127

def parse_response(response, branch_no)
  10.times { print "*" }
  print "\n(Your choice: "

  if response.to_i >= 1
    print "Change to branch #{response.to_i})\n\n"
    return response.to_i

  end

  case response.to_s.downcase
  when "t"
    print "Edit the trunk.)\n\n"
    @plot.edit_trunk
    return branch_no
  when "a"
    print "Add a new branch.)\n\n"
    return branch_no
  when "b"
    print "Edit the current branch.)\n\n"
    @plot.edit_branch(branch_no)
    return branch_no
  when "x"
    print "Delete the current branch.)\n\n"
    return branch_no
  when "l"
    print "Edit leaves of current branch.)\n\n"
    return branch_no
  when "s"
    print "Save changes.)\n\n"
    return branch_no
  when "q"
    print "Quit without saving.)\n\n"
    print "Unsaved changes will be lost. Still quit? [y/n]> "
    verify = STDIN.gets.chomp.to_s.downcase

    return 0 if verify == "y" 
    return branch_no
  else
    print "Unknown option. Returning to current branch.)\n\n"
    return branch_no
  end
end

#plant ⇒ Object

Establish and populate a new Plot (in-memory tree), then control the flow of editing the Plot



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# File 'lib/sapling/planter.rb', line 67

def plant
  @plot = Plot.new
  @plot.tree = @file
  @plot.trunk = @file.shift
  @plot.branches = Gardner.prune_branches(@file)

  next_branch = dig(1)
  until next_branch == 0 do
    next_branch = dig(next_branch)
  end

  puts "\n#{@plot.branches[0]["desc"]}"
  exit
end