Swiftdiff options
Diffstat (limited to 'Swiften/IDN/UTF8Validator.h')
| -rw-r--r-- | Swiften/IDN/UTF8Validator.h | 98 |
1 files changed, 49 insertions, 49 deletions
diff --git a/Swiften/IDN/UTF8Validator.h b/Swiften/IDN/UTF8Validator.h index 5df8769..d912ef9 100644 --- a/Swiften/IDN/UTF8Validator.h +++ b/Swiften/IDN/UTF8Validator.h @@ -13,55 +13,55 @@ namespace Swift { // UTF-8 validation based on the description in https://tools.ietf.org/html/rfc3629#section-3 . template <typename CharType> bool UTF8IsValid(const CharType* data, size_t length) { - bool isValid = true; - const CharType* current = data; - const CharType* end = data + length; - while (isValid && (current < end)) { - // one byte sequences - if ((*current & 0x80) == 0x0) { - current++; - continue; - } - // longer byte sequences - else { - // two byte sequences - if ((*current & 0xE0) == 0xC0) { - current++; - if ( (current < end) && ((*current & 0xC0) == 0x80) ) { - current++; - continue; - } - } - // three byte sequences - else if ((*current & 0xF0) == 0xE0) { - current++; - if ( ((current + 1) < end) && ((*current & 0xC0) == 0x80) ) { - current++; - if ((*current & 0xC0) == 0x80) { - current++; - continue; - } - } - } - // four byte sequences - else if ((*current & 0xF8) == 0xF0) { - current++; - if ( ((current + 2) < end) && ((*current & 0xC0) == 0x80) ) { - current++; - if ((*current & 0xC0) == 0x80) { - current++; - if ((*current & 0xC0) == 0x80) { - current++; - continue; - } - } - } - } - // invalid sequences - isValid = false; - } - } - return isValid; + bool isValid = true; + const CharType* current = data; + const CharType* end = data + length; + while (isValid && (current < end)) { + // one byte sequences + if ((*current & 0x80) == 0x0) { + current++; + continue; + } + // longer byte sequences + else { + // two byte sequences + if ((*current & 0xE0) == 0xC0) { + current++; + if ( (current < end) && ((*current & 0xC0) == 0x80) ) { + current++; + continue; + } + } + // three byte sequences + else if ((*current & 0xF0) == 0xE0) { + current++; + if ( ((current + 1) < end) && ((*current & 0xC0) == 0x80) ) { + current++; + if ((*current & 0xC0) == 0x80) { + current++; + continue; + } + } + } + // four byte sequences + else if ((*current & 0xF8) == 0xF0) { + current++; + if ( ((current + 2) < end) && ((*current & 0xC0) == 0x80) ) { + current++; + if ((*current & 0xC0) == 0x80) { + current++; + if ((*current & 0xC0) == 0x80) { + current++; + continue; + } + } + } + } + // invalid sequences + isValid = false; + } + } + return isValid; } } |