fix windows build...

src/utfutils.cpp

@@ -0,0 +1,94 @@
+#include "utfutils.h"
+
+int decodeUTF8(const unsigned char* data, char& len) {
+  int ret=0xfffd;
+  if (data[0]<0x80) {
+    ret=data[0];
+    len=1;
+  } else if (data[0]<0xc0) {
+    ret=0xfffd; // invalid
+    len=1;
+  } else if (data[0]<0xe0) {
+    if (data[1]>=0x80 && data[1]<0xc0) {
+      len=2;
+      ret=((data[0]&31)<<6)|
+          (data[1]&63);
+    } else len=1;
+  } else if (data[0]<0xf0) {
+    if (data[1]>=0x80 && data[1]<0xc0) {
+      if (data[2]>=0x80 && data[2]<0xc0) {
+        len=3;
+        ret=((data[0]&15)<<12)|
+            ((data[1]&63)<<6)|
+            (data[2]&63);
+      } else len=2;
+    } else len=1;
+  } else if (data[0]<0xf5) {
+    if (data[1]>=0x80 && data[1]<0xc0) {
+      if (data[2]>=0x80 && data[2]<0xc0) {
+        if (data[3]>=0x80 && data[3]<0xc0) {
+          len=4;
+          ret=((data[0]&7)<<18)|
+              ((data[1]&63)<<12)|
+              ((data[2]&63)<<6)|
+              (data[3]&63);
+        } else len=3;
+      } else len=2;
+    } else len=1;
+  } else {
+    len=1;
+    return 0xfffd;
+  }
+
+  if ((ret>=0xd800 && ret<=0xdfff) || ret>=0x110000) return 0xfffd;
+  return ret;
+}
+
+size_t utf8len(const char* s) {
+  size_t p=0;
+  size_t r=0;
+  char cl;
+  while (s[p]!=0) {
+    r++;
+    decodeUTF8((const unsigned char*)&s[p],cl);
+    p+=cl;
+  }
+  return r;
+}
+
+char utf8csize(const unsigned char* c) {
+  char ret;
+  decodeUTF8(c,ret);
+  return ret;
+}
+
+WString utf8To16(const char* s) {
+  WString ret;
+  int ch, p;
+  char chs;
+  p=0;
+  while (s[p]!=0) {
+    ch=decodeUTF8((const unsigned char*)&s[p],chs);
+    ret+=(unsigned short)ch;
+    p+=chs;
+  }
+  return ret;
+}
+
+String utf16To8(const wchar_t* s) {
+  String ret;
+  for (size_t i=0; i<wcslen(s); i++) {
+    if (s[i]<0x80) {
+      ret+=s[i];
+    } else if (s[i]<0x800) {
+      ret+=(0xc0+((s[i]>>6)&31));
+      ret+=(0x80+((s[i])&63));
+    } else {
+      ret+=(0xe0+((s[i]>>12)&15));
+      ret+=(0x80+((s[i]>>6)&63));
+      ret+=(0x80+((s[i])&63));
+
+    }
+  }
+  return ret;
+}