- added some logic to 'try' to figure out when to render font test right to left and when not to

source/shared_lib/sources/util/string_utils.cpp

@@ -691,4 +691,59 @@ namespace Shared { namespace Util {
 		pBuffer[len] = 0;
 	}
 
+
+	void strrev(char *p) {
+	  char *q = p;
+	  while(q && *q) ++q;
+	  for(--q; p < q; ++p, --q)
+	    *p = *p ^ *q,
+	    *q = *p ^ *q,
+	    *p = *p ^ *q;
+	}
+
+	#define SWP(x,y) (x^=y, y^=x, x^=y)
+
+	void strrev_utf8(char *p) {
+	  char *q = p;
+	  strrev(p); /* call base case */
+
+	  /* Ok, now fix bass-ackwards UTF chars. */
+	  while(q && *q) ++q; /* find eos */
+	  while(p < --q)
+	    switch( (*q & 0xF0) >> 4 ) {
+	    case 0xF: /* U+010000-U+10FFFF: four bytes. */
+	      SWP(*(q-0), *(q-3));
+	      SWP(*(q-1), *(q-2));
+	      q -= 3;
+	      break;
+	    case 0xE: /* U+000800-U+00FFFF: three bytes. */
+	      SWP(*(q-0), *(q-2));
+	      q -= 2;
+	      break;
+	    case 0xC: /* fall-through */
+	    case 0xD: /* U+000080-U+0007FF: two bytes. */
+	      SWP(*(q-0), *(q-1));
+	      q--;
+	      break;
+	    }
+	}
+
+	void strrev_utf8(std::string &p) {
+		char szBuf[p.size()+1];
+		strcpy(szBuf,p.c_str());
+		szBuf[p.size()+1] = '\0';
+		strrev_utf8(&szBuf[0]);
+		p = szBuf;
+	}
+
+	bool is_string_all_ascii(std::string str) {
+		bool result = true;
+		for(int i = 0; i < str.length(); ++i) {
+			if(isascii(str[i]) == false) {
+				result = false;
+				break;
+			}
+		}
+		return result;
+	}
 }}