class Rundoc::CodeCommand::FileCommand::Append

Public Class Methods

new(filename) click to toggle source
# File lib/rundoc/code_command/file_command/append.rb, line 5
def initialize(filename)
  @filename, line = filename.split('#')
  if line
    @line_number = Integer(line)
  else
    @line_number = nil
  end
end

Public Instance Methods

call(env = {}) click to toggle source
# File lib/rundoc/code_command/file_command/append.rb, line 59
def call(env = {})
  mkdir_p
  doc = File.read(filename)
  if @line_number
    puts "Writing to: '#{filename}' line #{@line_number} with: #{contents.inspect}"
    doc = insert_contents_into_at_line(doc)
  else
    puts "Appending to file: '#{filename}' with: #{contents.inspect}"
    doc = concat_with_newline(doc, contents)
  end

  File.open(filename, "w") do |f|
    f.write(doc)
  end
  contents
end
concat_with_newline(str1, str2) click to toggle source
# File lib/rundoc/code_command/file_command/append.rb, line 35
def concat_with_newline(str1, str2)
  result = ""
  result << str1
  result << "\n" unless ends_in_newline?(result)
  result << str2
  result << "\n" unless ends_in_newline?(result)
  result
end
ends_in_newline?(string) click to toggle source
# File lib/rundoc/code_command/file_command/append.rb, line 31
def ends_in_newline?(string)
  last_char_of(string) == "\n"
end
insert_contents_into_at_line(doc) click to toggle source
# File lib/rundoc/code_command/file_command/append.rb, line 44
def insert_contents_into_at_line(doc)
  lines = doc.lines
  raise "Expected #{filename} to have at least #{@line_number} but only has #{lines.count}" if lines.count < @line_number
  result = []
  lines.each_with_index do |line, index|
    line_number = index.next
    if line_number == @line_number
      result << contents
      result << "\n" unless ends_in_newline?(contents)
    end
    result << line
  end
  doc = result.flatten.join("")
end
last_char_of(string) click to toggle source
# File lib/rundoc/code_command/file_command/append.rb, line 27
def last_char_of(string)
  string[-1,1]
end
to_md(env) click to toggle source
# File lib/rundoc/code_command/file_command/append.rb, line 14
def to_md(env)
  return unless render_command?

  raise "must call write in its own code section" unless env[:commands].empty?
  before = env[:before]
  if @line_number
    env[:before] = "In file `#{filename}`, on line #{@line_number} add:\n\n#{before}"
  else
    env[:before] = "At the end of `#{filename}` add:\n\n#{before}"
  end
  nil
end