mirror of https://gitee.com/bigwinds/arangodb
200 lines
6.7 KiB
C++
200 lines
6.7 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// @brief basic exceptions
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///
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/// @file
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///
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/// DISCLAIMER
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///
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/// Copyright 2014 ArangoDB GmbH, Cologne, Germany
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/// Copyright 2004-2014 triAGENS GmbH, Cologne, Germany
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///
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/// Licensed under the Apache License, Version 2.0 (the "License");
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/// you may not use this file except in compliance with the License.
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/// You may obtain a copy of the License at
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///
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/// http://www.apache.org/licenses/LICENSE-2.0
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///
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/// Unless required by applicable law or agreed to in writing, software
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/// distributed under the License is distributed on an "AS IS" BASIS,
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/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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/// See the License for the specific language governing permissions and
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/// limitations under the License.
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///
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/// Copyright holder is ArangoDB GmbH, Cologne, Germany
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///
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/// @author Dr. Frank Celler
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/// @author Copyright 2014, ArangoDB GmbH, Cologne, Germany
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/// @author Copyright 2009-2013, triAGENS GmbH, Cologne, Germany
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////////////////////////////////////////////////////////////////////////////////
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#include "Exceptions.h"
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using namespace std;
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using namespace triagens::basics;
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// -----------------------------------------------------------------------------
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// --SECTION-- private variables
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @brief controls if backtraces are printed with exceptions
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////////////////////////////////////////////////////////////////////////////////
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static bool WithBackTrace = false;
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// -----------------------------------------------------------------------------
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// --SECTION-- class Exception
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @brief controls whether a backtrace is created for each exception
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////////////////////////////////////////////////////////////////////////////////
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void Exception::SetVerbose (bool verbose) {
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WithBackTrace = verbose;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief constructor, without format string
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////////////////////////////////////////////////////////////////////////////////
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Exception::Exception (int code,
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char const* file,
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int line)
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: _errorMessage(TRI_errno_string(code)),
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_file(file),
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_line(line),
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_code(code) {
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#ifdef TRI_ENABLE_MAINTAINER_MODE
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#if HAVE_BACKTRACE
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if (WithBackTrace) {
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_errorMessage += std::string("\n\n");
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TRI_GetBacktrace(_errorMessage);
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_errorMessage += std::string("\n\n");
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}
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#endif
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#endif
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief returns the error message
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////////////////////////////////////////////////////////////////////////////////
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string Exception::message () const throw () {
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return _errorMessage;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief returns the error code
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////////////////////////////////////////////////////////////////////////////////
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int Exception::code () const throw () {
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return _code;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief adds to the message
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////////////////////////////////////////////////////////////////////////////////
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void Exception::addToMessage (string More) {
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_errorMessage += More;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief constructor, for creating an exception with an already created
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/// error message (normally based on error templates containing %s, %d etc.)
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////////////////////////////////////////////////////////////////////////////////
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Exception::Exception (int code,
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string const& errorMessage,
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char const* file,
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int line)
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: _errorMessage(errorMessage),
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_file(file),
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_line(line),
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_code(code) {
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#ifdef TRI_ENABLE_MAINTAINER_MODE
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#if HAVE_BACKTRACE
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if (WithBackTrace) {
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_errorMessage += std::string("\n\n");
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TRI_GetBacktrace(_errorMessage);
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_errorMessage += std::string("\n\n");
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}
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#endif
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#endif
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief destructor
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////////////////////////////////////////////////////////////////////////////////
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Exception::~Exception () throw () {
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief return exception message
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////////////////////////////////////////////////////////////////////////////////
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const char* Exception::what () const throw () {
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return _errorMessage.c_str();
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief construct an error message from a template string
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////////////////////////////////////////////////////////////////////////////////
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std::string Exception::FillExceptionString (int code, ...) {
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char const* format = TRI_errno_string(code);
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TRI_ASSERT(format != nullptr);
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#ifdef TRI_ENABLE_MAINTAINER_MODE
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// Obviously the formatstring of the error code has to support parameters.
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TRI_ASSERT(strchr(format, '%') != nullptr);
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#endif
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char buffer[1024];
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va_list ap;
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va_start(ap, code);
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vsnprintf(buffer, sizeof(buffer) - 1, format, ap);
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va_end(ap);
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buffer[sizeof(buffer) - 1] = '\0'; // Windows
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return std::string(buffer);
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief construct an error message from a template string
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////////////////////////////////////////////////////////////////////////////////
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std::string Exception::FillFormatExceptionString (char const* format, ...) {
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TRI_ASSERT(format != nullptr);
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#ifdef TRI_ENABLE_MAINTAINER_MODE
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// Format #1 should come from the macro...
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TRI_ASSERT(strchr(format, '%') != nullptr);
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// Obviously the user has to give us a format string.
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TRI_ASSERT(strchr(strchr(format, '%'), '%') != nullptr);
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#endif
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char buffer[1024];
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va_list ap;
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va_start(ap, format);
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vsnprintf(buffer, sizeof(buffer) - 1, format, ap);
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va_end(ap);
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buffer[sizeof(buffer) - 1] = '\0'; // Windows
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return std::string(buffer);
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}
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// -----------------------------------------------------------------------------
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// --SECTION-- END-OF-FILE
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// -----------------------------------------------------------------------------
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// Local Variables:
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// mode: outline-minor
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// outline-regexp: "/// @brief\\|/// {@inheritDoc}\\|/// @page\\|// --SECTION--\\|/// @\\}"
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// End:
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