diff options
Diffstat (limited to 'gtk/PlatGTK.cxx')
| -rw-r--r-- | gtk/PlatGTK.cxx | 33 |
1 files changed, 26 insertions, 7 deletions
diff --git a/gtk/PlatGTK.cxx b/gtk/PlatGTK.cxx index 97b085587..eb11b504b 100644 --- a/gtk/PlatGTK.cxx +++ b/gtk/PlatGTK.cxx @@ -2733,16 +2733,35 @@ long Platform::SendScintillaPointer( reinterpret_cast<sptr_t>(lParam)); } -bool Platform::IsDBCSLeadByte(int /* codePage */, char /* ch */) { +bool Platform::IsDBCSLeadByte(int codePage, char ch) { + // Byte ranges found in Wikipedia articles with relevant search strings in each case + unsigned char uch = static_cast<unsigned char>(ch); + switch (codePage) { + case 932: + // Shift_jis + return ((uch >= 0x81) && (uch <= 0x9F)) || + ((uch >= 0xE0) && (uch <= 0xEF)); + case 936: + // GBK + return (uch >= 0x81) && (uch <= 0xFE); + case 950: + // Big5 + return (uch >= 0x81) && (uch <= 0xFE); + // Korean EUC-KR may be code page 949. + } return false; } -int Platform::DBCSCharLength(int, const char *s) { - int bytes = mblen(s, MB_CUR_MAX); - if (bytes >= 1) - return bytes; - else - return 1; +int Platform::DBCSCharLength(int codePage, const char *s) { + if (codePage == 932 || codePage == 936 || codePage == 950) { + return IsDBCSLeadByte(codePage, s[0]) ? 2 : 1; + } else { + int bytes = mblen(s, MB_CUR_MAX); + if (bytes >= 1) + return bytes; + else + return 1; + } } int Platform::DBCSCharMaxLength() { |