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mruby-string-ext: implement String#ascii_only? method

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Yukihiro "Matz" Matsumoto
2024-01-18 22:53:46 +09:00
parent 57fd0edaa7
commit 6f0c34e04e
1 changed files with 16 additions and 0 deletions
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mrbgems/mruby-string-ext/src/string.c
+16
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@@ -1346,6 +1346,21 @@ str_valid_enc_p(mrb_state *mrb, mrb_value str)
return mrb_true_value();
}
static mrb_value
str_ascii_only_p(mrb_state *mrb, mrb_value str)
{
struct RString *s = mrb_str_ptr(str);
const char *p = RSTR_PTR(s);
const char *e = p + RSTR_LEN(s);
while (p < e) {
if (*p & 0x80) return mrb_false_value();
p++;
}
RSTR_SET_SINGLE_BYTE_FLAG(mrb_str_ptr(str));
return mrb_true_value();
}
void
mrb_mruby_string_ext_gem_init(mrb_state* mrb)
{
@@ -1384,6 +1399,7 @@ mrb_mruby_string_ext_gem_init(mrb_state* mrb)
mrb_define_method(mrb, s, "+@", str_uplus, MRB_ARGS_REQ(1));
mrb_define_method(mrb, s, "-@", str_uminus, MRB_ARGS_REQ(1));
mrb_define_method(mrb, s, "valid_encoding?", str_valid_enc_p, MRB_ARGS_NONE());
mrb_define_method(mrb, s, "ascii_only?", str_ascii_only_p, MRB_ARGS_NONE());
mrb_define_method(mrb, s, "__lines", str_lines, MRB_ARGS_NONE());
mrb_define_method(mrb, s, "__codepoints", str_codepoints, MRB_ARGS_NONE());