Module: VER::Methods::Completion

Included in:
VER::Methods
Defined in:
lib/ver/methods/completion.rb

Constant Summary collapse

ASPELL_PARSE = 
/^& (.*?) (\d+) (\d+): (.*)$/

Instance Method Summary collapse

Instance Method Details

#aspell_completions(from, to) ⇒ Object 



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# File 'lib/ver/methods/completion.rb', line 152

def aspell_completions(from, to)
  word = get(from, to)

  if result = aspell_execute(word)[word]
    result[:suggestions]
  else
    [word]
  end
end

#aspell_execute(word) ⇒ Object 



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# File 'lib/ver/methods/completion.rb', line 164

def aspell_execute(word)
  require 'open3'
  results = {}

  Open3.popen3("aspell pipe") do |stdin, stdout, stderr|
    stdin.print("^#{word}")
    stdin.close
    result = stdout.read

    result.scan(ASPELL_PARSE) do |original, count, offset, suggestions|
      results[original] = {
        count: count.to_i,
        offset: offset.to_i,
        suggestions: suggestions.split(/\s*,\s*/),
      }
    end
  end

  return results
end

#complete(options = {}, &block) ⇒ Object 



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# File 'lib/ver/methods/completion.rb', line 185

def complete(options = {}, &block)
  edit_separator
  HoverCompletion.new(self, options, &block)
end

#complete_again ⇒ Object 



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# File 'lib/ver/methods/completion.rb', line 21

def complete_again
  send(@complete_last_used) if @complete_last_used
end

#complete_aspell ⇒ Object 



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# File 'lib/ver/methods/completion.rb', line 142

def complete_aspell
  @complete_last_used = :complete_aspell

  complete do
    pos = index('insert - 1 chars')
    from, to = pos.wordstart, pos.wordend
    [from, to, aspell_completions(from, to)]
  end
end

#complete_file ⇒ Object 



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# File 'lib/ver/methods/completion.rb', line 90

def complete_file
  @complete_last_used = :complete_file

  complete continue: true do
    file_completions('insert linestart', 'insert')
  end
end

#complete_line ⇒ Object 



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# File 'lib/ver/methods/completion.rb', line 73

def complete_line
  @complete_last_used = :complete_line

  from, to = 'insert linestart', 'insert lineend'
  lines = line_completions(from, to)

  complete{ [from, to, lines] }
end

#complete_tm ⇒ Object 



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# File 'lib/ver/methods/completion.rb', line 25

def complete_tm
  return unless load_preferences
  require 'set'
  require 'tempfile'

  @complete_last_used = :complete_tm

  from, to = 'insert - 1 chars wordstart', 'insert - 1 chars wordend'

  complete{ [from, to, tm_completions(from, to)] }
end

#complete_word ⇒ Object 



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# File 'lib/ver/methods/completion.rb', line 118

def complete_word
  @complete_last_used = :complete_word

  y, x = index('insert').split
  x = (x - 1).abs
  from, to = index("#{y}.#{x} wordstart"), index("#{y}.#{x} wordend")

  words = word_completions(from, to)

  complete{ [from, to, words] }
end

#file_completions(from, to) ⇒ Object 



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# File 'lib/ver/methods/completion.rb', line 98

def file_completions(from, to)
  y = index(from).y
  line = get(from, to)

  return [] unless match = line.match(/(?<pre>.*?)(?<path>\/[^\s"'{}()\[\]]*)(?<post>.*?)/)
  from, to = match.offset(:path)
  path = match[:path]

  path.sub!(/\/*$/, '/') if File.directory?(path)

  list = Dir["#{path}*"].uniq - [path]

  list.map! do |item|
    item << '/' if File.directory?(item)
    item.sub(path, '/')
  end

  return "#{y}.#{to - 1}", "#{y}.#{to}", list
end

#line_completions(from, to) ⇒ Object 



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# File 'lib/ver/methods/completion.rb', line 82

def line_completions(from, to)
  line = get(from, to).to_s.strip

  return [] if line.empty?
  needle = Regexp.escape(line)
  search_all(/^.*#{needle}.*$/).map{|match, *_| match }.uniq
end

#scope_compare(tags, scopes) ⇒ Object 



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# File 'lib/ver/methods/completion.rb', line 69

def scope_compare(tags, scopes)
  scopes.all?{|scope| tags.any?{|tag| scope.start_with?(tag) }}
end

#smart_tab ⇒ Object

TODO: use the tag names at the location to customize completion choices the textmate bundles have quite some stuff for that.



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# File 'lib/ver/methods/completion.rb', line 6

def smart_tab
  context = get('insert - 1 chars', 'insert + 1 chars')

  if context =~ /^\S\W/
    if @complete_last_used
      complete_again
    else
      complete_word
    end
  else
    indent = ' ' * VER.options.shiftwidth
    insert :insert, indent
  end
end

#tm_completions(from, to) ⇒ Object 



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# File 'lib/ver/methods/completion.rb', line 37

def tm_completions(from, to)
  tags  = Set.new(tag_names(to))
  completions = []

  @preferences.each do |key, value|
    name, scope, settings, uuid =
      value.values_at('name', 'scope', 'settings', 'uuid')
    scopes = Set.new(scope.split(/\s*,\s*|\s+/))

    next unless completion_command = settings['completionCommand']
    next unless scope_compare(tags, scopes)

    current_word = get(from, to).strip
    ENV['TM_CURRENT_WORD'] = current_word

    tmp = Tempfile.new('ver/complete_tm')
    tmp.print(completion_command)
    tmp.close
    begin
      FileUtils.chmod(0700, tmp.path)
      result = `exec '#{tmp.path}'`
      completions = result.scan(/[^\r\n]+/)
    ensure
      tmp.close!
    end
  end

  completions
rescue => ex
  VER.error(ex)
end

#word_completions(from, to) ⇒ Object 



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# File 'lib/ver/methods/completion.rb', line 130

def word_completions(from, to)
  prefix = get(from, to).strip
  return [] if prefix.empty?
  prefix = Regexp.escape(prefix)

  found = search_all(/(^|\W)(#{prefix}[\w-]*)/).
    sort_by{|match, mf, mt| [Text::Index.new(self, mf).delta(from), match] }.
    map{|match, *_| match.strip[/[\w-]+/] }.uniq
  found.delete prefix
  found
end