git.sesse.net Git - casparcg/blob - common/except.cpp

   1 /*
   2 * Copyright (c) 2011 Sveriges Television AB <info@casparcg.com>
   3 *
   4 * This file is part of CasparCG (www.casparcg.com).
   5 *
   6 * CasparCG is free software: you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License as published by
   8 * the Free Software Foundation, either version 3 of the License, or
   9 * (at your option) any later version.
  10 *
  11 * CasparCG is distributed in the hope that it will be useful,
  12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 * GNU General Public License for more details.
  15 *
  16 * You should have received a copy of the GNU General Public License
  17 * along with CasparCG. If not, see <http://www.gnu.org/licenses/>.
  18 *
  19 * Author: Robert Nagy, ronag89@gmail.com
  20 */
  21
  22 #include "stdafx.h"
  23
  24 #include "except.h"
  25
  26 #include <boost/algorithm/string/join.hpp>
  27
  28 namespace {
  29
  30 std::list<std::string>& context_stacks_per_thread()
  31 {
  32         static thread_local std::list<std::string> instances;
  33
  34         return instances;
  35 }
  36
  37 }
  38
  39 namespace caspar {
  40
  41 std::list<std::string>& context_stack_for_thread()
  42 {
  43         return context_stacks_per_thread();
  44 }
  45
  46 std::string get_context()
  47 {
  48         return boost::join(context_stack_for_thread(), "");
  49 }
  50
  51 scoped_context::scoped_context()
  52         : scoped_context::scoped_context("")
  53 {
  54 }
  55
  56 scoped_context::scoped_context(std::string msg)
  57         : for_thread_(context_stack_for_thread())
  58 {
  59         for_thread_.push_back(std::move(msg));
  60         msg_ = &for_thread_.back();
  61 }
  62
  63 void scoped_context::replace_msg(std::string msg)
  64 {
  65         if (&for_thread_ != &context_stack_for_thread())
  66                 CASPAR_THROW_EXCEPTION(invalid_operation() << msg_info("Called from wrong thread"));
  67
  68         *msg_ = std::move(msg);
  69 }
  70
  71 void scoped_context::clear_msg()
  72 {
  73         replace_msg("");
  74 }
  75
  76 scoped_context::~scoped_context()
  77 {
  78         for_thread_.pop_back();
  79 }
  80
  81
  82
  83 std::string get_message_and_context(const caspar_exception& e)
  84 {
  85         std::string result;
  86
  87         auto msg = boost::get_error_info<msg_info_t>(e);
  88         auto ctx = boost::get_error_info<context_info_t>(e);
  89
  90         if (msg)
  91                 result += *msg;
  92
  93         if (ctx && !ctx->empty())
  94         {
  95                 result += " (";
  96                 result += *ctx;
  97                 result += ")";
  98         }
  99
 100         if (!result.empty() && result.back() != '.')
 101                 result += ".";
 102
 103         return result;
 104 }
 105
 106 }