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BAN: Return UTF::invalid from byte_length instead of 0

This commit is contained in:
Bananymous 2025-06-02 10:46:15 +03:00
parent 4656b11256
commit e9f8471a28
4 changed files with 9 additions and 6 deletions
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2
BAN/include/BAN/UTF8.h
View File

@ -18,7 +18,7 @@ namespace BAN::UTF8
return 3; return 3;
if ((first_byte & 0xF8) == 0xF0) if ((first_byte & 0xF8) == 0xF0)
return 4; return 4;
return 0; return UTF8::invalid;
} }
template<typename T> requires (sizeof(T) == 1) template<typename T> requires (sizeof(T) == 1)

7
userspace/libraries/LibC/stdlib.cpp
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@ -560,9 +560,12 @@ int mblen(const char* s, size_t n)
case LOCALE_POSIX: case LOCALE_POSIX:
return 1; return 1;
case LOCALE_UTF8: case LOCALE_UTF8:
if (const auto bytes = BAN::UTF8::byte_length(*s); n >= bytes) const auto bytes = BAN::UTF8::byte_length(*s);
return bytes; if (bytes == BAN::UTF8::invalid)
return -1; return -1;
if (n < bytes)
return -1;
return bytes;
} }
ASSERT_NOT_REACHED(); ASSERT_NOT_REACHED();
} }

2
userspace/libraries/LibFont/PSF.cpp
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@ -176,7 +176,7 @@ namespace LibFont
uint32_t len = BAN::UTF8::byte_length(bytes[0]); uint32_t len = BAN::UTF8::byte_length(bytes[0]);
if (len == 0) if (len == BAN::UTF8::invalid)
{ {
invalid_utf = true; invalid_utf = true;
byte_index = 0; byte_index = 0;

2
userspace/programs/Terminal/Terminal.cpp
View File

@ -748,7 +748,7 @@ Rectangle Terminal::putchar(uint8_t ch)
m_utf8_bytes[m_utf8_index++] = ch; m_utf8_bytes[m_utf8_index++] = ch;
const size_t utf8_len = BAN::UTF8::byte_length(m_utf8_bytes[0]); const size_t utf8_len = BAN::UTF8::byte_length(m_utf8_bytes[0]);
if (utf8_len == 0) if (utf8_len == BAN::UTF8::invalid)
{ {
dwarnln("invalid utf8 leading byte 0x{2H}", ch); dwarnln("invalid utf8 leading byte 0x{2H}", ch);
m_utf8_index = 0; m_utf8_index = 0;