1 files changed, 37 insertions, 8 deletions

diff --git a/src/base64.cpp b/src/base64.cpp
index 04ca009..4d659f0 100644
--- a/src/base64.cpp
+++ b/src/base64.cpp
@@ -13,7 +13,7 @@ const char Bu::Base64::tblEnc[65] = {
         "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"
 };
 
-Bu::Base64::Base64( Bu::Stream &rNext ) :
+Bu::Base64::Base64( Bu::Stream &rNext, int iChunkSize ) :
         Bu::Filter( rNext ),
         iBPos( 0 ),
         iBuf( 0 ),
@@ -22,7 +22,9 @@ Bu::Base64::Base64( Bu::Stream &rNext ) :
         bEosIn( false ),
         iTotalIn( 0 ),
         iTotalOut( 0 ),
-        eMode( Nothing )
+        eMode( Nothing ),
+        iChunkSize( iChunkSize ),
+        iCurChunk( 0 )
 {
         start();
 
@@ -62,11 +64,12 @@ Bu::Base64::~Base64()
 
 void Bu::Base64::start()
 {
+        iCurChunk = 0;
 }
 
 Bu::size Bu::Base64::stop()
 {
-//      if( eMode |= Encode )
+        if( eMode == Encode )
         {
                 char outBuf[4];
                 int iBUsed = 4-(3-iBPos);
@@ -80,17 +83,30 @@ Bu::size Bu::Base64::stop()
                 {
                         outBuf[k] = '=';
                 }
-                iTotalOut += rNext.write( outBuf, 4 );
+                iCurChunk += 4;
+                if( iChunkSize && iCurChunk >= iChunkSize )
+                {
+                        iCurChunk = iCurChunk-iChunkSize;
+                        iTotalOut += rNext.write( outBuf, 4-iCurChunk );
+                        iTotalOut += rNext.write("\r\n", 2 );
+                        iTotalOut += rNext.write( outBuf+(4-iCurChunk), iCurChunk );
+                }
+                else
+                        iTotalOut += rNext.write( outBuf, 4 );
                 return iTotalOut;
         }
-//      else
-//      {
+        else
+        {
                 return iTotalIn;
-//      }
+        }
 }
 
 Bu::size Bu::Base64::read( void *pBuf, Bu::size nBytes )
 {
+        if( eMode == Encode )
+                throw Bu::Base64Exception("Cannot read from an output stream.");
+        eMode = Decode;
+
         if( bEosIn == true && iRPos == iChars )
                 return 0;
         Bu::size sIn = 0;
@@ -157,6 +173,10 @@ Bu::size Bu::Base64::read( void *pBuf, Bu::size nBytes )
 
 Bu::size Bu::Base64::write( const void *pBuf, Bu::size nBytes )
 {
+        if( eMode == Decode )
+                throw Bu::Base64Exception("Cannot write to an input stream.");
+        eMode = Encode;
+
         Bu::size sOut = 0;
         char outBuf[4];
         for( Bu::size j = 0; j < nBytes; j++ )
@@ -168,7 +188,16 @@ Bu::size Bu::Base64::write( const void *pBuf, Bu::size nBytes )
                         {
                                 outBuf[3-k] = tblEnc[(iBuf>>(6*k))&0x3f];
                         }
-                        sOut += rNext.write( outBuf, 4 );
+                        iCurChunk += 4;
+                        if( iChunkSize && iCurChunk >= iChunkSize )
+                        {
+                                iCurChunk = iCurChunk-iChunkSize;
+                                sOut += rNext.write( outBuf, 4-iCurChunk );
+                                sOut += rNext.write("\r\n", 2 );
+                                sOut += rNext.write( outBuf+(4-iCurChunk), iCurChunk );
+                        }
+                        else
+                                sOut += rNext.write( outBuf, 4 );
                         iBPos = iBuf = 0;
                 }
         }