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Tuesday the 22nd of May 2012 @ 05:58pm
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LibN2L


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(n2l5)


Documentation
(libN2L-4)


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LibN2L-4 Library Code Reference

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base

system.cpp

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00001 #include "base/system.h"
00002 
00003 #include "base/babelFish.h"
00004 
00005 #include <sys/types.h>
00006 
00007 #ifdef WIN32
00008 #   define WIN32_LEAN_AND_MEAN
00009 #   define STRICT
00010 #   include <windows.h>
00011 #else
00012 #   include <unistd.h>
00013 #endif
00014 
00015 #include "base/cOutOfBoundsException.h"
00016 
00017 namespace n2l
00018 {
00019     /********************************************************************/
00020     const tUID n2lProcessUID()
00021     {
00022 #       ifdef WIN32
00023             return tUID( 0 );
00024 #       else
00025             return tUID( getuid() );
00026 #       endif
00027     }
00028 
00029     /********************************************************************/
00030     const tUID n2lProcessGID()
00031     {
00032 #       ifdef WIN32
00033             return tUID( 0 );
00034 #       else
00035             return tUID( getgid() );
00036 #       endif
00037     }
00038 
00039     /********************************************************************/
00040     const tBool n2lSetEnv( const tString &iName,
00041         const tString &iValue )
00042     {
00043 #       ifdef WIN32
00044             return SetEnvironmentVariableA( iName.c_str(),
00045                 iValue.c_str() );
00046 #       else
00047             return (-1!=setenv( iName.c_str(), iValue.c_str(), 1 ));
00048 #       endif
00049     }
00050 
00051     /********************************************************************/
00052     const tBool n2lUnsetEnv( const tString &iName )
00053     {
00054 #       ifdef WIN32
00055             return SetEnvironmentVariableA( iName.c_str(),
00056                 NULL );
00057 #       else
00058             unsetenv( iName.c_str() );
00059 #       endif
00060         return true;
00061     }
00062 
00063     /********************************************************************/
00064     const tString n2lGetEnv( const tString &iName )
00065     {
00066 #       ifdef WIN32
00067             enum { n2lGetEnv_BUF_SIZE = 32767 };
00068             char buf[n2lGetEnv_BUF_SIZE];
00069             if (0 == GetEnvironmentVariableA( iName.c_str(),
00070                 buf, n2lGetEnv_BUF_SIZE ))
00071             {
00072                 tUint err;
00073                 if ((err = GetLastError())==ERROR_ENVVAR_NOT_FOUND)
00074                     throw cOutOfBoundsException( "n2lGetEnv",
00075                         "No such environment variable", iName );
00076                 throw cException( "n2lGetEnv", "Something went wrong. "
00077                     "Got error code: " + asString( err ) );
00078             }
00079             return buf;
00080 #       else
00081             char *tmp = getenv( iName.c_str() );
00082             if (tmp==NULL)
00083                 throw cOutOfBoundsException( "n2lGetEnv",
00084                     "No such environment variable", iName );
00085             return tmp;
00086 #       endif
00087     }
00088 
00089 
00090 }
©2012 Aaron Cameron