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* string.c (rb_str_each_codepoint): add new methods, #codepoints

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and #each_codepoint.  a patch from Michael Selig
  <michael.selig at fs.com.au> in [ruby-core:18532].

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19379 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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matz 2008-09-16 03:14:41 +00:00
parent 4c467da68f
commit 0df867f933
2 changed files with 61 additions and 0 deletions
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6
ChangeLog
View file

@ -1,3 +1,9 @@
Tue Sep 16 11:55:16 2008 Yukihiro Matsumoto <matz@ruby-lang.org>
* string.c (rb_str_each_codepoint): add new methods, #codepoints
and #each_codepoint. a patch from Michael Selig
<michael.selig at fs.com.au> in [ruby-core:18532].
Tue Sep 16 11:24:44 2008 Yukihiro Matsumoto <matz@ruby-lang.org>
* ext/socket/mkconstants.rb: add new constants. a patch from

55
string.c
View file

@ -5506,6 +5506,59 @@ rb_str_each_char(VALUE str)
return str;
}
/*
* Document-method: codepoints
* call-seq:
* str.codepoints => anEnumerator
* str.codepoints {|fixnum| block } => str
*
* Returns an enumerator that gives the <code>Integer</code> ordinal
* of each character in the string, also known as a <i>codepoint</i>
* when applied to Unicode strings. If a block is given, it iterates
* over each character in the string.
*
* "foo\u0635".chars.to_a #=> [102, 111, 111, 1589]
*/
/*
* Document-method: each_codepoint
* call-seq:
* str.each_codepoint {|fixnum| block } => str
*
* Passes the <code>Integer</code> ordinal of each character in <i>str</i>,
* also known as a <i>codepoint</i> when applied to Unicode strings to the
* given block.
*
* "hello\u0639".each_codepoint {|c| print c, ' ' }
*
* <em>produces:</em>
*
* 104 101 108 108 111 1593
*/
static VALUE
rb_str_each_codepoint(VALUE str)
{
int i, len, n;
unsigned int c;
const char *ptr, *end;
rb_encoding *enc;
if (single_byte_optimizable(str)) return rb_str_each_byte(str);
RETURN_ENUMERATOR(str, 0, 0);
ptr = RSTRING_PTR(str);
len = RSTRING_LEN(str);
end = RSTRING_END(str);
enc = STR_ENC_GET(str);
while (ptr < end) {
c = rb_enc_codepoint(ptr, end, enc);
n = rb_enc_codelen(c, enc);
rb_yield(INT2FIX(c));
ptr += n;
}
return str;
}
static long
chopped_length(VALUE str)
{
@ -6883,6 +6936,7 @@ Init_String(void)
rb_define_method(rb_cString, "lines", rb_str_each_line, -1);
rb_define_method(rb_cString, "bytes", rb_str_each_byte, 0);
rb_define_method(rb_cString, "chars", rb_str_each_char, 0);
rb_define_method(rb_cString, "codepoints", rb_str_each_codepoint, 0);
rb_define_method(rb_cString, "reverse", rb_str_reverse, 0);
rb_define_method(rb_cString, "reverse!", rb_str_reverse_bang, 0);
rb_define_method(rb_cString, "concat", rb_str_concat, 1);
@ -6932,6 +6986,7 @@ Init_String(void)
rb_define_method(rb_cString, "each_line", rb_str_each_line, -1);
rb_define_method(rb_cString, "each_byte", rb_str_each_byte, 0);
rb_define_method(rb_cString, "each_char", rb_str_each_char, 0);
rb_define_method(rb_cString, "each_codepoint", rb_str_each_codepoint, 0);
rb_define_method(rb_cString, "sum", rb_str_sum, -1);