1 files changed, 70 insertions, 0 deletions
diff --git a/src/modules/filters/unicodertf.cpp b/src/modules/filters/unicodertf.cpp
new file mode 100644
index 0000000..b53a2d7
--- /dev/null
+++ b/src/modules/filters/unicodertf.cpp
@@ -0,0 +1,70 @@
+/******************************************************************************
+ *
+ * unicodertf -	SWFilter decendant to convert a double byte unicode file
+ *				 to RTF tags
+ */
+
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <unicodertf.h>
+
+UnicodeRTF::UnicodeRTF() {
+}
+
+
+char UnicodeRTF::ProcessText(char *text, int maxlen, const SWKey *key, const SWModule *module)
+{
+	unsigned char *to, *from, *maxto;
+	int len;
+        char digit[10];
+        short ch;	// must be signed per unicode spec (negative is ok for big numbers > 32768)
+
+	len = strlenw(text) + 2;						// shift string to right of buffer
+	if (len < maxlen) {
+	        memmove(&text[maxlen - len], text, len);
+		from = (unsigned char*)&text[maxlen - len];
+	}
+	else	from = (unsigned char*)text;
+        maxto =(unsigned char*)text + maxlen;
+
+	// -------------------------------
+	for (to = (unsigned char*)text; *from && (to <= maxto); from++) {
+	  ch = 0;
+          if ((*from & 128) != 128) {
+	       *to++ = *from;
+               continue;
+          }
+          if ((*from & 128) && ((*from & 64) != 64)) {
+	    // error
+               *from = 'x';
+               continue;
+          }
+          *from <<= 1;
+          int subsequent;
+          for (subsequent = 1; (*from & 128); subsequent++) {
+          	*from <<= 1;
+               from[subsequent] &= 63;
+               ch <<= 6;
+               ch |= from[subsequent];
+          }
+          subsequent--;
+          *from <<=1;
+          char significantFirstBits = 8 - (2+subsequent);
+          
+          ch |= (((short)*from) << (((6*subsequent)+significantFirstBits)-8));
+          from += subsequent;
+          *to++ = '\\';
+          *to++ = 'u';
+	  sprintf(digit, "%d", ch);
+		for (char *dig = digit; *dig; dig++)
+			*to++ = *dig;
+		*to++ = '?';
+	}
+        
+        if (to != maxto) {
+              	*to++ = 0;
+        }
+        *to = 0;
+	return 0;
+}