diff options
Diffstat (limited to 'common/ustr.cpp')
| -rw-r--r-- | common/ustr.cpp | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/common/ustr.cpp b/common/ustr.cpp index 85946cda46..cddfda7201 100644 --- a/common/ustr.cpp +++ b/common/ustr.cpp @@ -327,4 +327,37 @@ void U32String::initWithCStr(const value_type *str, uint32 len) { _str[len] = 0; } +// This is a quick and dirty converter. +// +// More comprehensive one lives in wintermute/utils/convert_utf.cpp +U32String convertUtf8ToUtf32(const String &str) { + // The String class, and therefore the Font class as well, assume one + // character is one byte, but in this case it's actually an UTF-8 + // string with up to 4 bytes per character. To work around this, + // convert it to an U32String before drawing it, because our Font class + // can handle that. + Common::U32String u32str; + uint i = 0; + while (i < str.size()) { + uint32 chr = 0; + if ((str[i] & 0xF8) == 0xF0) { + chr |= (str[i++] & 0x07) << 18; + chr |= (str[i++] & 0x3F) << 12; + chr |= (str[i++] & 0x3F) << 6; + chr |= (str[i++] & 0x3F); + } else if ((str[i] & 0xF0) == 0xE0) { + chr |= (str[i++] & 0x0F) << 12; + chr |= (str[i++] & 0x3F) << 6; + chr |= (str[i++] & 0x3F); + } else if ((str[i] & 0xE0) == 0xC0) { + chr |= (str[i++] & 0x1F) << 6; + chr |= (str[i++] & 0x3F); + } else { + chr = (str[i++] & 0x7F); + } + u32str += chr; + } + return u32str; +} + } // End of namespace Common |