Class: Rundoc::CodeCommand::FileCommand::Append

Inherits:
Rundoc::CodeCommand show all
Includes:
Rundoc::CodeCommand::FileUtil
Defined in:
lib/rundoc/code_command/file_command/append.rb

Constant Summary

Constants inherited from Rundoc::CodeCommand

NEWLINE, RUNDOC_DEFAULT_ERB_BINDING, RUNDOC_ERB_BINDINGS

Instance Attribute Summary

Attributes inherited from Rundoc::CodeCommand

#command, #contents, #keyword, #original_args, #render_command, #render_result

Instance Method Summary collapse

Methods included from Rundoc::CodeCommand::FileUtil

#filename, #mkdir_p

Methods inherited from Rundoc::CodeCommand

#hidden?, #not_hidden?, #push

Constructor Details

#initialize(filename) ⇒ Append

Returns a new instance of Append.



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# File 'lib/rundoc/code_command/file_command/append.rb', line 5

def initialize(filename)
  @filename, line = filename.split("#")
  @line_number = if line
    Integer(line)
  end
end

Instance Method Details

#call(env = {}) ⇒ Object 



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# File 'lib/rundoc/code_command/file_command/append.rb', line 60

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.write(filename, doc)
  contents
end

#concat_with_newline(str1, str2) ⇒ Object 



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# File 'lib/rundoc/code_command/file_command/append.rb', line 36

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) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rundoc/code_command/file_command/append.rb', line 32

def ends_in_newline?(string)
  last_char_of(string) == "\n"
end

#insert_contents_into_at_line(doc) ⇒ Object 



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# File 'lib/rundoc/code_command/file_command/append.rb', line 45

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
  result.flatten.join("")
end

#last_char_of(string) ⇒ Object 



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# File 'lib/rundoc/code_command/file_command/append.rb', line 28

def last_char_of(string)
  string[-1, 1]
end

#to_md(env) ⇒ Object 



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# File 'lib/rundoc/code_command/file_command/append.rb', line 12

def to_md(env)
  return unless render_command?

  if env[:commands].any? { |c| c[:object].not_hidden? }
    raise "Must call append in its own code section"
  end

  env[:before] << if @line_number
    "In file `#{filename}`, on line #{@line_number} add:"
  else
    "At the end of `#{filename}` add:"
  end
  env[:before] << NEWLINE
  nil
end