diff options
Diffstat (limited to 'src/DBCS.cxx')
| -rw-r--r-- | src/DBCS.cxx | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/src/DBCS.cxx b/src/DBCS.cxx index d5512cc14..0f22a705a 100644 --- a/src/DBCS.cxx +++ b/src/DBCS.cxx @@ -5,6 +5,11 @@ // Copyright 2017 by Neil Hodgson <neilh@scintilla.org> // The License.txt file describes the conditions under which this software may be distributed. +#include <cstdint> + +#include <array> +#include <map> + #include "DBCS.h" using namespace Scintilla::Internal; @@ -35,6 +40,41 @@ bool DBCSIsLeadByte(int codePage, char ch) noexcept { ((uch >= 0x84) && (uch <= 0xD3)) || ((uch >= 0xD8) && (uch <= 0xDE)) || ((uch >= 0xE0) && (uch <= 0xF9)); + default: + break; + } + return false; +} + +bool DBCSIsTrailByte(int codePage, char ch) noexcept { + const unsigned char trail = ch; + switch (codePage) { + case cp932: + // Shift_jis + return (trail != 0x7F) && + ((trail >= 0x40) && (trail <= 0xFC)); + case cp936: + // GBK + return (trail != 0x7F) && + ((trail >= 0x40) && (trail <= 0xFE)); + case cp949: + // Korean Wansung KS C-5601-1987 + return + ((trail >= 0x41) && (trail <= 0x5A)) || + ((trail >= 0x61) && (trail <= 0x7A)) || + ((trail >= 0x81) && (trail <= 0xFE)); + case cp950: + // Big5 + return + ((trail >= 0x40) && (trail <= 0x7E)) || + ((trail >= 0xA1) && (trail <= 0xFE)); + case cp1361: + // Korean Johab KS C-5601-1992 + return + ((trail >= 0x31) && (trail <= 0x7E)) || + ((trail >= 0x81) && (trail <= 0xFE)); + default: + break; } return false; } @@ -51,4 +91,25 @@ bool IsDBCSValidSingleByte(int codePage, int ch) noexcept { } } +using CodePageToFoldMap = std::map<int, FoldMap>; +CodePageToFoldMap cpToFoldMap; + +bool DBCSHasFoldMap(int codePage) { + const CodePageToFoldMap::const_iterator it = cpToFoldMap.find(codePage); + return it != cpToFoldMap.end(); +} + +void DBCSSetFoldMap(int codePage, const FoldMap &foldMap) { + cpToFoldMap[codePage] = foldMap; +} + +FoldMap *DBCSGetMutableFoldMap(int codePage) { + // Constructs if needed + return &cpToFoldMap[codePage]; +} + +const FoldMap *DBCSGetFoldMap(int codePage) { + return &cpToFoldMap[codePage]; +} + } |