diff options
| -rw-r--r-- | mrbgems/mruby-string-ext/mrblib/string.rb | 23 | ||||
| -rw-r--r-- | mrbgems/mruby-string-ext/test/string.rb | 7 |
2 files changed, 30 insertions, 0 deletions
diff --git a/mrbgems/mruby-string-ext/mrblib/string.rb b/mrbgems/mruby-string-ext/mrblib/string.rb index c699e13b7..3dd5561c8 100644 --- a/mrbgems/mruby-string-ext/mrblib/string.rb +++ b/mrbgems/mruby-string-ext/mrblib/string.rb @@ -287,6 +287,29 @@ class String return newstr.slice(0,idx) end + ## + # call-seq: + # str.rjust(integer, padstr=' ') -> new_str + # + # If <i>integer</i> is greater than the length of <i>str</i>, returns a new + # <code>String</code> of length <i>integer</i> with <i>str</i> right justified + # and padded with <i>padstr</i>; otherwise, returns <i>str</i>. + # + # "hello".rjust(4) #=> "hello" + # "hello".rjust(20) #=> " hello" + # "hello".rjust(20, '1234') #=> "123412341234123hello" + def rjust(idx, padstr = ' ') + if idx <= self.size + return self + end + padsize = idx - self.size + newstr = padstr.dup + while newstr.size <= padsize + newstr << padstr + end + return newstr.slice(0,padsize) + self + end + # str.upto(other_str, exclusive=false) {|s| block } -> str # str.upto(other_str, exclusive=false) -> an_enumerator # diff --git a/mrbgems/mruby-string-ext/test/string.rb b/mrbgems/mruby-string-ext/test/string.rb index 37a5d28cf..f68fbcb28 100644 --- a/mrbgems/mruby-string-ext/test/string.rb +++ b/mrbgems/mruby-string-ext/test/string.rb @@ -421,6 +421,13 @@ assert('String#ljust') do assert_equal "hello", "hello".ljust(-3) end +assert('String#rjust') do + assert_equal "hello", "hello".rjust(4) + assert_equal " hello", "hello".rjust(20) + assert_equal "123412341234123hello", "hello".rjust(20, '1234') + assert_equal "hello", "hello".rjust(-3) +end + assert('String#upto') do a = "aa" start = "aa" |