3.13

Common/UTFConvert.cpp

@@ -0,0 +1,70 @@
+// UTFConvert.cpp
+
+#include "StdAfx.h"
+
+#include "UTFConvert.h"
+#include "Types.h"
+
+bool ConvertUTF8ToUnicode(const AString &utfString, UString &resultString)
+{
+  resultString.Empty();
+  for(int i = 0; i < utfString.Length(); i++)
+  {
+    BYTE c = utfString[i];
+    if (c < 0x80)
+    {
+      resultString += c;
+      continue;
+    }
+    if(c < 0xC0 || c >= 0xF0)
+      return false;
+    i++;
+    if (i >= utfString.Length())
+      return false;
+    BYTE c2 = utfString[i];
+    if (c2 < 0x80)
+      return false;
+    c2 -= 0x80;
+    if (c2 >= 0x40)
+      return false;
+    if (c < 0xE0)
+    {
+      resultString += wchar_t( ((wchar_t(c - 0xC0)) << 6) + c2);
+      continue;
+    }
+    i++;
+    if (i >= utfString.Length())
+      return false;
+    BYTE c3 = utfString[i];
+    c3 -= 0x80;
+    if (c3 >= 0x40)
+      return false;
+    resultString += wchar_t(((wchar_t(c - 0xE0)) << 12) + 
+      ((wchar_t(c2)) << 6) + c3);
+  }
+  return true; 
+}
+
+void ConvertUnicodeToUTF8(const UString &unicodeString, AString &resultString)
+{
+  resultString.Empty();
+  for(int i = 0; i < unicodeString.Length(); i++)
+  {
+    wchar_t c = unicodeString[i];
+    if (c < 0x80)
+    {
+      resultString += char(c);
+      continue;
+    }
+    if (c < 0x07FF)
+    {
+      resultString += char(0xC0 + (c >> 6));
+      resultString += char(0x80 + (c & 0x003F));
+      continue;
+    }
+    resultString += char(0xE0 + (c >> 12));
+    resultString += char(0x80 + ((c >> 6) & 0x003F));
+    resultString += char(0x80 + (c & 0x003F));
+  }
+}
+