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/*
* Copyright © 2020, 2021 Christian Persch
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include "glib-glue.hh"
#include <exception>
#include <stdexcept>
#include "debug.h"
#define VTE_EXCEPTION_ERROR g_quark_from_static_string("std::exception")
typedef enum {
VTE_EXCEPTION_GENERIC,
} VteException;
namespace vte {
using namespace std::literals;
static void
exception_append_to_string(std::exception const& e,
std::string& what,
int level = 0)
{
if (level > 0)
what += ": "sv;
what += e.what();
try {
std::rethrow_if_nested(e);
} catch (std::bad_alloc const& en) {
g_error("Allocation failure: %s\n", what.c_str());
} catch (std::exception const& en) {
exception_append_to_string(en, what, level + 1);
} catch (...) {
what += ": Unknown nested exception"sv;
}
}
#ifdef VTE_DEBUG
void log_exception(char const* func,
char const* filename,
int const line) noexcept
try
{
auto what = std::string{};
try {
throw; // rethrow current exception
} catch (std::bad_alloc const& e) {
g_error("Allocation failure: %s\n", e.what());
} catch (std::exception const& e) {
exception_append_to_string(e, what);
} catch (...) {
what = "Unknown exception"sv;
}
_vte_debug_print(VTE_DEBUG_EXCEPTIONS,
"Caught exception in %s [%s:%d]: %s\n",
func, filename, line, what.c_str());
}
catch (...)
{
_vte_debug_print(VTE_DEBUG_EXCEPTIONS,
"Caught exception while logging an exception in %s [%s:%d]\n",
func, filename, line);
}
#else
static void
log_exception(std::exception const& e)
{
try {
std::rethrow_if_nested(e);
} catch (std::bad_alloc const& en) {
g_error("Allocation failure: %s\n", e.what());
} catch (std::exception const& en) {
log_exception(en);
} catch (...) {
}
}
void
log_exception() noexcept
try
{
try {
throw; // rethrow current exception
} catch (std::bad_alloc const& e) {
g_error("Allocation failure: %s\n", e.what());
} catch (std::exception const& e) {
log_exception(e);
} catch (...) {
}
}
catch (...)
{
}
#endif /* VTE_DEBUG */
namespace glib {
bool set_error_from_exception(GError** error
#ifdef VTE_DEBUG
, char const* func
, char const* filename
, int const line
#endif
) noexcept
try
{
auto what = std::string{};
try {
throw; // rethrow current exception
} catch (std::bad_alloc const& e) {
g_error("Allocation failure: %s\n", e.what());
} catch (std::exception const& e) {
exception_append_to_string(e, what);
} catch (...) {
what = "Unknown exception"sv;
}
#ifdef VTE_DEBUG
auto msg = vte::glib::take_string(g_strdup_printf("Caught exception in %s [%s:%d]: %s",
func, filename, line,
what.c_str()));
#else
auto msg = vte::glib::take_string(g_strdup_printf("Caught exception: %s",
what.c_str()));
#endif
auto msg_str = vte::glib::take_string(g_utf8_make_valid(msg.get(), -1));
g_set_error_literal(error,
VTE_EXCEPTION_ERROR,
VTE_EXCEPTION_GENERIC,
msg_str.get());
_vte_debug_print(VTE_DEBUG_EXCEPTIONS, "%s", msg_str.get());
return false;
}
catch (...)
{
vte::log_exception();
#ifdef VTE_DEBUG
g_set_error(error,
VTE_EXCEPTION_ERROR,
VTE_EXCEPTION_GENERIC,
"Caught exception while logging an exception in %s [%s:%d]\n",
func, filename, line);
#else
g_set_error_literal(error,
VTE_EXCEPTION_ERROR,
VTE_EXCEPTION_GENERIC,
"Caught exception while logging an exception");
#endif
return false;
}
} // namespace glib
} // namespace vte
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