odbcpp: src/odbcpp.cpp Source File

00001 //
00002 // File:        src/odbcpp.cpp
00003 // Object:      Main Documentation of the odbcpp library
00004 // Project:     http://www.m2osw.com/odbcpp
00005 // Author:      alexis_wilke@sourceforge.net
00006 //
00007 // Copyright (C)   2008 Made to Order Software Corp.
00008 //
00009 // This program is free software: you can redistribute it and/or modify
00010 // it under the terms of the GNU General Public License as published by
00011 // the Free Software Foundation, either version 3 of the License, or
00012 // (at your option) any later version.
00013 //
00014 // This program is distributed in the hope that it will be useful,
00015 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00016 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00017 // GNU General Public License for more details.
00018 //
00019 // You should have received a copy of the GNU General Public License
00020 // along with this program.  If not, see <http://www.gnu.org/licenses/>
00021 // or <http://gpl3.m2osw.com/>.
00022 //
00023 
00024 
00111 #include        "odbcpp/odbcpp.h"
00112 
00113 // we get a warning if sizeof(ptr) == sizeof(integer)
00114 #ifdef _MSC_VER
00115 #pragma warning(disable: 4318)
00116 #endif
00117 
00118 
00120 namespace odbcpp
00121 {
00122 
00123 
00129 const char *get_version()
00130 {
00131         return PACKAGE_VERSION;
00132 }
00133 
00134 
00143 SQLPOINTER int_to_ptr(SQLINTEGER integer)
00144 {
00145         SQLPOINTER      ptr;
00146 
00147         if(sizeof(ptr) < sizeof(integer)) {
00148                 diagnostic d(odbcpp_error::ODBCPP_INTERNAL, std::string("the size of an SQLINTEGER is larger than SQLPOINTER?!"));
00149                 throw odbcpp_error(d);
00150         }
00151 #if BYTE_ORDER == LITTLE_ENDIAN
00152         // in this case, little endian works great
00153         memcpy(&ptr, &integer, sizeof(integer));
00154         if(sizeof(ptr) > sizeof(integer)) {
00155                 memset(reinterpret_cast<char *>(&ptr) + sizeof(ptr) - sizeof(integer),
00156                                 0, sizeof(ptr) - sizeof(integer));
00157         }
00158 #else
00159         memcpy(reinterpret_cast<char *>(&ptr) + sizeof(ptr) - sizeof(integer),
00160                 &integer,
00161                 sizeof(integer));
00162         if(sizeof(ptr) > sizeof(integer)) {
00163                 memset(&ptr, 0, sizeof(ptr) - sizeof(integer));
00164         }
00165 #endif
00166 
00167         return ptr;
00168 }
00169 
00170 
00171 
00172 }       // namespace odbcpp
00173