bjoernager/rust
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Make str::replace smarter.

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This commit is contained in:
Josh Matthews 2012-01-16 01:52:28 -05:00
parent b3927d6052
commit 1223bbc4de
1 changed files with 7 additions and 2 deletions
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9
src/libcore/str.rs
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@ -962,8 +962,13 @@ fn replace(s: str, from: str, to: str) : is_not_empty(from) -> str {
} else if starts_with(s, from) { } else if starts_with(s, from) {
ret to + replace(slice(s, byte_len(from), byte_len(s)), from, to); ret to + replace(slice(s, byte_len(from), byte_len(s)), from, to);
} else { } else {
ret unsafe_from_byte(s[0]) + let idx = find(s, from);
replace(slice(s, 1u, byte_len(s)), from, to); if idx == -1 {
ret s;
}
ret char_slice(s, 0u, idx as uint) + to +
replace(char_slice(s, idx as uint + char_len(from), char_len(s)),
from, to);
} }
} }