[complement-svn] SF.net SVN: complement: [1891] trunk/complement/explore/app/utils

[<com...@us...>]

Revision: 1891
          http://complement.svn.sourceforge.net/complement/?rev=1891&view=rev
Author:   complement
Date:     2008-06-07 10:06:27 -0700 (Sat, 07 Jun 2008)

Log Message:
-----------
base64 encode/decode

Added Paths:
-----------
    trunk/complement/explore/app/utils/base64/
    trunk/complement/explore/app/utils/base64/Makefile
    trunk/complement/explore/app/utils/base64/Makefile.inc
    trunk/complement/explore/app/utils/base64/base64.cc


Property changes on: trunk/complement/explore/app/utils/base64
___________________________________________________________________
Name: svn:ignore
   + obj


Added: trunk/complement/explore/app/utils/base64/Makefile
===================================================================
--- trunk/complement/explore/app/utils/base64/Makefile	                        (rev 0)
+++ trunk/complement/explore/app/utils/base64/Makefile	2008-06-07 17:06:27 UTC (rev 1891)
@@ -0,0 +1,10 @@
+# -*- Makefile -*- Time-stamp: <07/07/05 09:31:15 ptr>
+
+SRCROOT := ../../..
+
+include Makefile.inc
+include ${SRCROOT}/Makefiles/gmake/top.mak
+
+# INCLUDES += -I${BOOST_DIR}
+
+LDFLAGS += -Wl,-rpath=${STLPORT_LIB_DIR}

Added: trunk/complement/explore/app/utils/base64/Makefile.inc
===================================================================
--- trunk/complement/explore/app/utils/base64/Makefile.inc	                        (rev 0)
+++ trunk/complement/explore/app/utils/base64/Makefile.inc	2008-06-07 17:06:27 UTC (rev 1891)
@@ -0,0 +1,4 @@
+# -*- makefile -*- Time-stamp: <02/07/14 14:03:13 ptr>
+
+PRGNAME = base64
+SRC_CC = base64.cc

Added: trunk/complement/explore/app/utils/base64/base64.cc
===================================================================
--- trunk/complement/explore/app/utils/base64/base64.cc	                        (rev 0)
+++ trunk/complement/explore/app/utils/base64/base64.cc	2008-06-07 17:06:27 UTC (rev 1891)
@@ -0,0 +1,71 @@
+
+#include <iostream>
+
+using namespace std;
+
+unsigned char a64[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+const char cd64[]="|$$$}rstuvwxyz{$$$$$$$>?@ABCDEFGHIJKLMNOPQRSTUVW$$$$$$XYZ[\\]^_`abcdefghijklmnopq";
+
+// void decode( istream )
+// {
+// }
+
+void decodeblock( unsigned char in[4], unsigned char out[3] )
+{
+  out[ 0 ] = (unsigned char ) (in[0] << 2 | in[1] >> 4);
+  out[ 1 ] = (unsigned char ) (in[1] << 4 | in[2] >> 2);
+  out[ 2 ] = (unsigned char ) (((in[2] << 6) & 0xc0) | in[3]);
+}
+
+#if 1
+void decode( istream& is, ostream& os )
+{
+  unsigned char in[4], out[3], v;
+  int len;
+
+  while( !is.eof() ) {
+    len = 0;
+    for( int i = 0; i < 4 && !is.eof(); i++ ) {
+      v = 0;
+      while( !is.eof() && v == 0 ) {
+        is >> v;
+        v = (unsigned char) ((v < 43 || v > 122) ? 0 : cd64[ v - 43 ]);
+        if ( v ) {
+          v = (unsigned char) ((v == '$') ? 0 : v - 61);
+        }
+      }
+      if( !is.eof() ) {
+        len++;
+        if ( v ) {
+          in[ i ] = (unsigned char) (v - 1);
+        }
+      } else {
+        in[i] = 0;
+      }
+    }
+    if ( len ) {
+      decodeblock( in, out );
+      for ( int i = 0; i < len - 1; i++ ) {
+        os << out[i];
+      }
+    }
+  }
+}
+#else
+void decode( istream& is, ostream& os )
+{
+  unsigned char in[4], out[3], v;
+  while( !is.eof() ) {
+    is >> in[0] >> in[1] >> in[2] >> in[3];
+    decodeblock( in, out );
+    os << out[0] << out[1] << out[2];
+  }
+}
+#endif
+
+int main()
+{
+  decode( cin, cout );
+
+  return 0;
+}


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