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| author | Dimitry Andric <dim@FreeBSD.org> | 2022-07-14 18:58:48 +0000 |
|---|---|---|
| committer | Dimitry Andric <dim@FreeBSD.org> | 2023-02-08 19:03:59 +0000 |
| commit | 753f127f3ace09432b2baeffd71a308760641a62 (patch) | |
| tree | 97694ab339c0ca6145ebb429c7505019565b9a60 /contrib/llvm-project/llvm/lib/Support/ConvertUTF.cpp | |
| parent | 81ad626541db97eb356e2c1d4a20eb2a26a766ab (diff) | |
| parent | 1f917f69ff07f09b6dbb670971f57f8efe718b84 (diff) | |
Diffstat (limited to 'contrib/llvm-project/llvm/lib/Support/ConvertUTF.cpp')
| -rw-r--r-- | contrib/llvm-project/llvm/lib/Support/ConvertUTF.cpp | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/contrib/llvm-project/llvm/lib/Support/ConvertUTF.cpp b/contrib/llvm-project/llvm/lib/Support/ConvertUTF.cpp index e24a918c5c89..5436f557b993 100644 --- a/contrib/llvm-project/llvm/lib/Support/ConvertUTF.cpp +++ b/contrib/llvm-project/llvm/lib/Support/ConvertUTF.cpp @@ -417,6 +417,16 @@ Boolean isLegalUTF8Sequence(const UTF8 *source, const UTF8 *sourceEnd) { return isLegalUTF8(source, length); } +/* + * Exported function to return the size of the first utf-8 code unit sequence, + * Or 0 if the sequence is not valid; + */ +unsigned getUTF8SequenceSize(const UTF8 *source, const UTF8 *sourceEnd) { + int length = trailingBytesForUTF8[*source] + 1; + return (length <= sourceEnd - source && isLegalUTF8(source, length)) ? length + : 0; +} + /* --------------------------------------------------------------------- */ static unsigned |