| Module | Haml::Shared |
| In: |
lib/haml/shared.rb
|
Moves a scanner through a balanced pair of characters. For example:
Foo (Bar (Baz bang) bop) (Bang (bop bip))
^ ^
from to
@param scanner [StringScanner] The string scanner to move @param start [Character] The character opening the balanced pair.
A `Fixnum` in 1.8, a `String` in 1.9
@param finish [Character] The character closing the balanced pair.
A `Fixnum` in 1.8, a `String` in 1.9
@param count [Fixnum] The number of opening characters matched
before calling this method
@return [(String, String)] The string matched within the balanced pair
and the rest of the string. `["Foo (Bar (Baz bang) bop)", " (Bang (bop bip))"]` in the example above.
# File lib/haml/shared.rb, line 41
41: def balance(scanner, start, finish, count = 0)
42: str = ''
43: scanner = StringScanner.new(scanner) unless scanner.is_a? StringScanner
44: regexp = Regexp.new("(.*?)[\\#{start.chr}\\#{finish.chr}]", Regexp::MULTILINE)
45: while scanner.scan(regexp)
46: str << scanner.matched
47: count += 1 if scanner.matched[-1] == start
48: count -= 1 if scanner.matched[-1] == finish
49: return [str.strip, scanner.rest] if count == 0
50: end
51: end
Scans through a string looking for the interoplation-opening `#{` and, when it‘s found, yields the scanner to the calling code so it can handle it properly.
The scanner will have any backslashes immediately in front of the `#{` as the second capture group (`scan[2]`), and the text prior to that as the first (`scan[1]`).
@yieldparam scan [StringScanner] The scanner scanning through the string @return [String] The text remaining in the scanner after all `#{`s have been processed
# File lib/haml/shared.rb, line 18
18: def handle_interpolation(str)
19: scan = StringScanner.new(str)
20: yield scan while scan.scan(/(.*?)(\\*)\#\{/)
21: scan.rest
22: end
Formats a string for use in error messages about indentation.
@param indentation [String] The string used for indentation @param was [Boolean] Whether or not to add `"was"` or `"were"`
(depending on how many characters were in `indentation`)
@return [String] The name of the indentation (e.g. `"12 spaces"`, `"1 tab"`)
# File lib/haml/shared.rb, line 59
59: def human_indentation(indentation, was = false)
60: if !indentation.include?(?\t)
61: noun = 'space'
62: elsif !indentation.include?(?\s)
63: noun = 'tab'
64: else
65: return indentation.inspect + (was ? ' was' : '')
66: end
67:
68: singular = indentation.length == 1
69: if was
70: was = singular ? ' was' : ' were'
71: else
72: was = ''
73: end
74:
75: "#{indentation.length} #{noun}#{'s' unless singular}#{was}"
76: end