1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
|
module StringDirection
# Strategy to detect direction looking for the presence of unicode marks
class MarksStrategy < Strategy
# left-to-right unicode mark
LTR_MARK = "\u200e".freeze
# right-to-right unicode mark
RTL_MARK = "\u200f".freeze
# Look for the presence of unicode marks in given string and infers from them its direction
#
# params [String] The string to inspect
# @return [String, nil]
def run(string)
string = string.to_s
if ltr_mark?(string) && rtl_mark?(string)
bidi
elsif ltr_mark?(string)
ltr
elsif rtl_mark?(string)
rtl
end
end
private
def ltr_mark?(string)
string.include?(LTR_MARK)
end
def rtl_mark?(string)
string.include?(RTL_MARK)
end
end
end
|
