Module: RuVim::Lang::Sh

Defined in:
lib/ruvim/lang/sh.rb

Constant Summary collapse

KEYWORDS = 
%w[
  if then else elif fi case esac for while until do done
  in function select return exit break continue
  local export readonly declare typeset unset
  source eval exec trap set shopt
].freeze
KEYWORD_RE = 
/\b(?:#{KEYWORDS.join("|")})\b/
STRING_SINGLE_RE = 
/'[^']*'/
STRING_DOUBLE_RE = 
/"(?:\\.|[^"\\])*"/
VARIABLE_RE = 
/\$\{?[A-Za-z_]\w*\}?|\$[0-9@#?!\-*$]/
NUMBER_RE = 
/\b\d+\b/
COMMENT_RE = 
/#.*/
SHEBANG_RE = 
/\A#!.*/
OPERATOR_RE = 
/(?:\|\||&&|;;|<<|>>)/
INDENT_OPEN_RE = 
/\b(?:then|else|do)\s*$/
INDENT_CLOSE_RE = 
/\A\s*(?:fi|done|esac|else|elif)\b/
DEDENT_TRIGGERS = 
{
  "i" => /\A(\s*)fi\z/,
  "e" => /\A(\s*)(?:done|else)\z/,
  "c" => /\A(\s*)esac\z/,
  "f" => /\A(\s*)elif\z/
}.freeze

Class Method Summary collapse

Class Method Details

.calculate_indent(lines, target_row, shiftwidth) ⇒ Object 



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# File 'lib/ruvim/lang/sh.rb', line 34

def calculate_indent(lines, target_row, shiftwidth)
  depth = 0
  (0...target_row).each do |row|
    line = lines[row].to_s.strip
    next if line.empty? || line.start_with?("#")

    depth += 1 if line.match?(/\b(?:then|else|elif|do)\s*$/) || line.match?(/\{\s*$/)
    depth -= 1 if line.match?(/\A(?:fi|done|esac)\b/) || line.match?(/\A\}/)
  end

  target_line = lines[target_row].to_s.strip
  depth -= 1 if target_line.match?(/\A(?:fi|done|esac|else|elif)\b/) || target_line.match?(/\A\}/)
  depth = 0 if depth < 0
  depth * shiftwidth
end

.color_columns(text) ⇒ Object 



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# File 'lib/ruvim/lang/sh.rb', line 59

def color_columns(text)
  cols = {}
  Highlighter.apply_regex(cols, text, STRING_SINGLE_RE, Highlighter::STRING_COLOR)
  Highlighter.apply_regex(cols, text, STRING_DOUBLE_RE, Highlighter::STRING_COLOR)
  Highlighter.apply_regex(cols, text, KEYWORD_RE, Highlighter::KEYWORD_COLOR)
  Highlighter.apply_regex(cols, text, VARIABLE_RE, Highlighter::VARIABLE_COLOR)
  Highlighter.apply_regex(cols, text, NUMBER_RE, Highlighter::NUMBER_COLOR)
  Highlighter.apply_regex(cols, text, COMMENT_RE, Highlighter::COMMENT_COLOR, override: true)
  cols
end

.dedent_trigger(char) ⇒ Object 



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# File 'lib/ruvim/lang/sh.rb', line 55

def dedent_trigger(char)
  DEDENT_TRIGGERS[char]
end

.indent_trigger?(line) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ruvim/lang/sh.rb', line 50

def indent_trigger?(line)
  stripped = line.to_s.rstrip
  stripped.match?(/\b(?:then|else|elif|do)\s*$/) || stripped.match?(/\{\s*$/)
end