From 8c8aa6b07e595cfac56838b5964ab3e96051f1b2 Mon Sep 17 00:00:00 2001
From: "Roberto C. Sanchez" <roberto@connexer.com>
Date: Sat, 29 Mar 2014 10:53:49 -0400
Subject: Imported Upstream version 1.5.7

---
 src/modules/filters/utf8utf16.cpp | 115 +++++++++++++++++++-------------------
 1 file changed, 57 insertions(+), 58 deletions(-)

(limited to 'src/modules/filters/utf8utf16.cpp')

diff --git a/src/modules/filters/utf8utf16.cpp b/src/modules/filters/utf8utf16.cpp
index 9aea6fe..2fddf4c 100644
--- a/src/modules/filters/utf8utf16.cpp
+++ b/src/modules/filters/utf8utf16.cpp
@@ -1,6 +1,6 @@
 /******************************************************************************
  *
- * UTF8UTF16 -	SWFilter decendant to convert UTF-8 to UTF-16
+ * UTF8UTF16 -	SWFilter descendant to convert UTF-8 to UTF-16
  *
  */
 
@@ -9,71 +9,70 @@
 
 #include <utf8utf16.h>
 
+SWORD_NAMESPACE_START
+
 UTF8UTF16::UTF8UTF16() {
 }
 
 
-char UTF8UTF16::ProcessText(char *text, int maxlen, const SWKey *key, const SWModule *module)
-{
-  unsigned char *from;
-  unsigned short *to;
+char UTF8UTF16::processText(SWBuf &text, const SWKey *key, const SWModule *module) {
+	const unsigned char *from;
 
-  int len;
-  unsigned long uchar;
-  unsigned char significantFirstBits, subsequent;
-  unsigned short schar;
-  
-  len = strlen(text) + 1;						// 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;
+	int len;
+	unsigned long uchar, uchars[10];
+	unsigned char significantFirstBits, subsequent;
+	unsigned short schar;
   
+	 if ((unsigned long)key < 2)	// hack, we're en(1)/de(0)ciphering
+		return -1;
+
   
-  // -------------------------------
-  
-  for (to = (unsigned short*)text; *from; from++) {
-    uchar = 0;
-    if ((*from & 128) != 128) {
-      //          	if (*from != ' ')
-      uchar = *from;
-    }
-    else if ((*from & 128) && ((*from & 64) != 64)) {
-      // error, do nothing
-      continue;
-    }
-    else {
-      *from <<= 1;
-      for (subsequent = 1; (*from & 128); subsequent++) {
-	*from <<= 1;
-	from[subsequent] &= 63;
-	uchar <<= 6;
-	uchar |= from[subsequent];
-      }
-      subsequent--;
-      *from <<=1;
-      significantFirstBits = 8 - (2+subsequent);
-      
-      uchar |= (((short)*from) << (((6*subsequent)+significantFirstBits)-8));
-      from += subsequent;
-    }
+	SWBuf orig = text;
+	from = (const unsigned char *)orig.c_str();
 
-    if (uchar < 0x1ffff) {
-      *to++ = (unsigned short)uchar;
-    }
-    else {
-      uchar -= 0x10000;
-      schar = 0xD800 | (uchar & 0x03ff);
-      uchar >>= 10;
-      uchar |= 0xDC00;
-      *to++ = (unsigned short)schar;
-      *to++ = (unsigned short)uchar;
-    }
-  }
-  *to = (unsigned short)0;
+	for (text = ""; *from; from++) {
+		uchar = 0;
+		if ((*from & 128) != 128) {
+			//if (*from != ' ')
+			uchar = *from;
+		}
+		else if ((*from & 128) && ((*from & 64) != 64)) {
+			// error, do nothing
+			continue;
+		}
+		else {
+			uchars[0] = *from;
+			uchars[0] <<= 1;
+			for (subsequent = 1; (uchars[0] & 128) && (subsequent < 10); subsequent++) {
+				uchars[0] <<= 1;
+				uchars[subsequent] = from[subsequent];
+				uchars[subsequent] &= 63;
+				uchar <<= 6;
+				uchar |= uchars[subsequent];
+			}
+			subsequent--;
+			uchars[0] <<=1;
+			significantFirstBits = 8 - (2+subsequent);
+	 
+			uchar |= (((short)uchars[0]) << (((6*subsequent)+significantFirstBits)-8));
+			from += subsequent;
+		}
 
-  return 0;
+		if (uchar < 0x1ffff) {
+			text.setSize(text.size()+2);
+			*((unsigned short *)(text.getRawData()+(text.size()-2))) = (unsigned short)uchar;
+		}
+		else {
+			uchar -= 0x10000;
+			schar = 0xD800 | (uchar & 0x03ff);
+			uchar >>= 10;
+			uchar |= 0xDC00;
+			text.setSize(text.size()+4);
+			*((unsigned short *)(text.getRawData()+(text.size()-4))) = (unsigned short)schar;
+			*((unsigned short *)(text.getRawData()+(text.size()-2))) = (unsigned short)uchar;
+		}
+	}
+	return 0;
 }
 
+SWORD_NAMESPACE_END
-- 
cgit v1.2.3