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| author | Yukihiro Matsumoto <[email protected]> | 2012-05-31 16:14:11 +0900 |
|---|---|---|
| committer | Yukihiro Matsumoto <[email protected]> | 2012-05-31 16:14:11 +0900 |
| commit | 86697ca7b47ee826598c30948549651e662f09e3 (patch) | |
| tree | c2f6031c8c432484b114004a2a7688c3aa5b830b | |
| parent | 1df00298f91774f37800e0f6d15d1c0b8a10fefa (diff) | |
| download | mruby-86697ca7b47ee826598c30948549651e662f09e3.tar.gz mruby-86697ca7b47ee826598c30948549651e662f09e3.zip | |
reimplement String#downcase
| -rw-r--r-- | src/string.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/string.c b/src/string.c index a9e0fca13..c9fac896d 100644 --- a/src/string.c +++ b/src/string.c @@ -927,6 +927,20 @@ mrb_str_chop(mrb_state *mrb, mrb_value self) static mrb_value mrb_str_downcase_bang(mrb_state *mrb, mrb_value str) { + char *s, *send; + int modify = 0; + + s = RSTRING_PTR(str); + send = RSTRING_END(str); + while (s < send) { + if (ISUPPER(*s)) { + *s = tolower(*s); + modify = 1; + } + s++; + } + + if (modify) return str; return mrb_nil_value(); } |