added: a new way: HEX format to saving/reading from PostgreSQL bytea columns

added: to Request:
       // binary page
       BinaryPage binary_page;

       // a compressed page ready to send to the client
       BinaryPage compressed_page;

       // if true then either page or ajaxpage will be sent to the client
       // if false then binary_page is sent
       // default: true
       bool use_text_page;

       BinaryPage is defined as (in requesttypes.h):
       typedef PT::TextStreamBase<char, 1, 4096> BinaryPage;

added: to Compress: now it can gets BinaryPage as arguments (input, output)
changed: winix version to: 0.5.0
added: in templates: TexTextStream class
       for taking input to the TeX typesetting system





git-svn-id: svn://ttmath.org/publicrep/winix/trunk@884 e52654a7-88a9-db11-a3e9-0013d4bc506e

db/dbtextstream.cpp

@@ -217,6 +217,10 @@ return *this;
 */
 
 
+/*
+	old PostgreSQL Escape Format
+*/
+/*
 DbTextStream & DbTextStream::EBinPutChar(char c_)
 {
 char buf[20];
@@ -235,6 +239,26 @@ char buf[20];
 
 return *this;
 }
+*/
+
+// get hex digit for c_ between <0, 15>
+char DbTextStream::EBinGetHex(char c)
+{
+	if( c < 10 )
+		return c + '0';
+
+return c - 10 + 'A';
+}
+
+
+DbTextStream & DbTextStream::EBinPutChar(char c)
+{
+	buffer += EBinGetHex(((unsigned char)c) >> 4);
+	buffer += EBinGetHex(((unsigned char)c) & 0x0f);
+
+return *this;
+}
+
 
 
 DbTextStream & DbTextStream::ETextPutChar(char c)
@@ -341,7 +365,7 @@ DbTextStream & DbTextStream::EPutBin(const char * str, size_t len)
 	if( ext_escape )
 		buffer += 'E';
 
-	buffer += '\'';
+	buffer += "\'\\\\x";
 
 	for(size_t i = 0 ; i < len ; ++i)
 		EBinPutChar(str[i]);