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binarystring.hxx

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00001 /*-------------------------------------------------------------------------
00002  *
00003  *   FILE
00004  *      pqxx/binarystring.hxx
00005  *
00006  *   DESCRIPTION
00007  *      declarations for bytea (binary string) conversions
00008  *   DO NOT INCLUDE THIS FILE DIRECTLY; include pqxx/binarystring instead.
00009  *
00010  * Copyright (c) 2003-2005, Jeroen T. Vermeulen <jtv@xs4all.nl>
00011  *
00012  * See COPYING for copyright license.  If you did not receive a file called
00013  * COPYING with this source code, please notify the distributor of this mistake,
00014  * or contact the author.
00015  *
00016  *-------------------------------------------------------------------------
00017  */
00018 #include "pqxx/libcompiler.h"
00019 
00020 #include <string>
00021 
00022 #include "pqxx/result"
00023 
00024 
00025 namespace pqxx
00026 {
00027 
00029 
00049 class PQXX_LIBEXPORT binarystring : internal::PQAlloc<unsigned char>
00050 {
00051   // TODO: Templatize on character type?
00052 public:
00053   typedef content_type char_type;
00054   typedef PGSTD::char_traits<char_type>::char_type value_type;
00055   typedef size_t size_type;
00056   typedef long difference_type;
00057   typedef const value_type &const_reference;
00058   typedef const value_type *const_pointer;
00059   typedef const_pointer const_iterator;
00060 
00061 #ifdef PQXX_HAVE_REVERSE_ITERATOR
00062   typedef PGSTD::reverse_iterator<const_iterator> const_reverse_iterator;
00063 #endif
00064 
00065 private:
00066   typedef internal::PQAlloc<value_type> super;
00067 
00068 public:
00070 
00073   explicit binarystring(const result::field &F);                        //[t62]
00074 
00076   size_type size() const throw () { return m_size; }                    //[t62]
00078   size_type length() const throw () { return size(); }                  //[t62]
00079   bool empty() const throw () { return size()==0; }                     //[t62]
00080 
00081   const_iterator begin() const throw () { return data(); }              //[t62]
00082   const_iterator end() const throw () { return data()+m_size; }         //[t62]
00083 
00084   const_reference front() const throw () { return *begin(); }           //[t62]
00085   const_reference back() const throw () { return *(data()+m_size-1); }  //[t62]
00086 
00087 #ifdef PQXX_HAVE_REVERSE_ITERATOR
00088   const_reverse_iterator rbegin() const                                 //[t62]
00089         { return const_reverse_iterator(end()); }
00090   const_reverse_iterator rend() const                                   //[t62]
00091         { return const_reverse_iterator(begin()); }
00092 #endif
00093 
00095   const value_type *data() const throw () {return super::c_ptr();}      //[t62]
00096 
00097   const_reference operator[](size_type i) const throw ()                //[t62]
00098         { return data()[i]; }
00099 
00100   bool operator==(const binarystring &) const throw ();                 //[t62]
00101   bool operator!=(const binarystring &rhs) const throw ()               //[t62]
00102         { return !operator==(rhs); }
00103 
00105   const_reference at(size_type) const;                                  //[t62]
00106 
00108   void swap(binarystring &);                                            //[t62]
00109 
00111 
00114   const char *c_ptr() const throw ()                                    //[t62]
00115   {
00116     return reinterpret_cast<char *>(super::c_ptr());
00117   }
00118 
00120 
00127   const PGSTD::string &str() const;                                     //[t62]
00128 
00129 private:
00130   size_type m_size;
00131   mutable PGSTD::string m_str;
00132 };
00133 
00134 
00139 
00140 PGSTD::string PQXX_LIBEXPORT escape_binary(const PGSTD::string &bin);
00142 PGSTD::string PQXX_LIBEXPORT escape_binary(const char bin[]);
00144 PGSTD::string PQXX_LIBEXPORT escape_binary(const char bin[], size_t len);
00146 PGSTD::string PQXX_LIBEXPORT escape_binary(const unsigned char bin[]);
00148 PGSTD::string PQXX_LIBEXPORT escape_binary(const unsigned char bin[], size_t len);
00150 
00151 
00152 }
00153 

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