LCOV - code coverage report
Current view: top level - snaplogger - environment_variable.cpp (source / functions) Hit Total Coverage
Test: coverage.info Lines: 2 15 13.3 %
Date: 2019-12-13 00:59:36 Functions: 5 11 45.5 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : /*
       2             :  * Copyright (c) 2013-2019  Made to Order Software Corp.  All Rights Reserved
       3             :  *
       4             :  * https://snapwebsites.org/project/snaplogger
       5             :  * contact@m2osw.com
       6             :  *
       7             :  * This program is free software; you can redistribute it and/or modify
       8             :  * it under the terms of the GNU General Public License as published by
       9             :  * the Free Software Foundation; either version 2 of the License, or
      10             :  * (at your option) any later version.
      11             :  *
      12             :  * This program is distributed in the hope that it will be useful,
      13             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      14             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      15             :  * GNU General Public License for more details.
      16             :  *
      17             :  * You should have received a copy of the GNU General Public License along
      18             :  * with this program; if not, write to the Free Software Foundation, Inc.,
      19             :  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
      20             :  */
      21             : 
      22             : /** \file
      23             :  * \brief Implementation of the environment variable support.
      24             :  *
      25             :  * This file implements a variable which retrieves its value from the
      26             :  * process environment. For example, you could retrieve the path to
      27             :  * the HOME directory.
      28             :  *
      29             :  * This is often used to distinguish between runs.
      30             :  */
      31             : 
      32             : // self
      33             : //
      34             : #include    "snaplogger/exception.h"
      35             : #include    "snaplogger/variable.h"
      36             : 
      37             : 
      38             : // last include
      39             : //
      40             : #include    <snapdev/poison.h>
      41             : 
      42             : 
      43             : 
      44             : namespace snaplogger
      45             : {
      46             : 
      47             : 
      48             : namespace
      49             : {
      50             : 
      51             : 
      52           8 : DEFINE_LOGGER_VARIABLE(env)
      53             : {
      54           0 :     auto params(get_params());
      55           0 :     if(params.empty())
      56             :     {
      57           0 :         throw invalid_variable("the ${env:...} variable must have a \"name\" parameter.");
      58             :     }
      59           0 :     if(params[0]->get_name() != "name")
      60             :     {
      61           0 :         throw invalid_variable("the ${env:...} variable first parameter must be its \"name\" parameter.");
      62             :     }
      63           0 :     std::string const env_name(params[0]->get_value());
      64           0 :     if(env_name.empty())
      65             :     {
      66           0 :         throw invalid_variable("the ${env:name=...} variable first parameter cannot be empty.");
      67             :     }
      68           0 :     char const * env(getenv(env_name.c_str()));
      69           0 :     if(env != nullptr)
      70             :     {
      71           0 :         value += env;
      72             :     }
      73             : 
      74           0 :     variable::process_value(msg, value);
      75           0 : }
      76             : 
      77             : 
      78             : }
      79             : // no name namespace
      80             : 
      81             : 
      82           6 : } // snaplogger namespace
      83             : // vim: ts=4 sw=4 et

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