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/*
* Copyright 2013, Blender Foundation.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef PTC_UTIL_ERROR_HANDLER_H
#define PTC_UTIL_ERROR_HANDLER_H
#include <stdio.h>
#ifdef WITH_ALEMBIC
#include <Alembic/Abc/ErrorHandler.h>
#endif
extern "C" {
#include "BLI_utildefines.h"
#include "BLI_string.h"
}
#include "util_types.h"
struct ModifierData;
struct ReportList;
namespace PTC {
class ErrorHandler
{
public:
ErrorHandler();
virtual ~ErrorHandler();
virtual void handle(PTCErrorLevel level, const char *message) = 0;
void set_error_level(PTCErrorLevel level);
PTCErrorLevel max_error_level() const { return m_max_level; }
static ErrorHandler *get_default_handler() { return m_default_handler; }
static void set_default_handler(ErrorHandler *handler);
static void clear_default_handler();
private:
PTCErrorLevel m_max_level;
static ErrorHandler *m_default_handler;
};
class StdErrorHandler : public ErrorHandler
{
public:
StdErrorHandler(PTCErrorLevel level);
void handle(PTCErrorLevel level, const char *message);
PTCErrorLevel get_verbosity() const { return m_verbosity; }
void set_verbosity(PTCErrorLevel level) { m_verbosity = level; }
private:
PTCErrorLevel m_verbosity;
};
/* Use Blender reports system to log Alembic errors */
class CallbackErrorHandler : public ErrorHandler
{
public:
CallbackErrorHandler(PTCErrorCallback cb, void *userdata);
void handle(PTCErrorLevel level, const char *message);
private:
PTCErrorCallback m_callback;
void *m_userdata;
};
class ModifierErrorHandler : public ErrorHandler
{
public:
ModifierErrorHandler(ModifierData *md);
void handle(PTCErrorLevel level, const char *message);
private:
ModifierData *m_modifier;
};
/* -------------------------------- */
#ifdef WITH_ALEMBIC
/* XXX With current Alembic version 1.5 we only get a combined error message.
* This function try to extract some more information and return a nicer message format.
*/
BLI_INLINE void split_alembic_error_message(const char *msg, const char **origin, const char **base_msg)
{
const char delim[] = {'\n', '\0'};
const char *sep, *suffix;
BLI_str_partition(msg, delim, &sep, &suffix);
if (suffix) {
*origin = msg;
BLI_str_partition(suffix, delim, &sep, &suffix);
if (suffix) {
*base_msg = suffix;
}
else {
*base_msg = msg;
}
}
else {
*origin = *base_msg = msg;
}
}
/* wrapper templates so the exception macro can be used with references as well as pointers */
template <typename T>
void handle_alembic_exception(T &handler, PTCErrorLevel level, const Alembic::Util::Exception &e)
{
const char *origin, *msg;
split_alembic_error_message(e.what(), &origin, &msg);
handler.set_error_level(level);
handler.handle(level, msg);
}
template <typename T>
void handle_alembic_exception(T *handler, PTCErrorLevel level, const Alembic::Util::Exception &e)
{
static StdErrorHandler default_handler(PTC_ERROR_WARNING);
if (!handler)
handler = &default_handler;
const char *origin, *msg;
split_alembic_error_message(e.what(), &origin, &msg);
handler->set_error_level(level);
handler->handle(level, msg);
}
#endif
/* -------------------------------- */
/* macros for convenient exception handling */
#define PTC_SAFE_CALL_BEGIN \
try {
#ifdef WITH_ALEMBIC
#define PTC_SAFE_CALL_END_HANDLER(handler) \
} \
catch (Alembic::Util::Exception e) { \
handle_alembic_exception((handler), PTC_ERROR_CRITICAL, e); \
}
#else
#define PTC_SAFE_CALL_END_HANDLER(handler) \
}
#endif
#ifdef WITH_ALEMBIC
#define PTC_SAFE_CALL_END_HANDLER_LEVEL(handler, level) \
} \
catch (Alembic::Util::Exception e) { \
handle_alembic_exception((handler), (level), e); \
}
#else
#define PTC_SAFE_CALL_END_HANDLER_LEVEL(handler, level) \
}
#endif
#ifdef WITH_ALEMBIC
#define PTC_SAFE_CALL_END \
} \
catch (Alembic::Util::Exception e) { \
handle_alembic_exception(ErrorHandler::get_default_handler(), PTC_ERROR_CRITICAL, e); \
}
#else
#define PTC_SAFE_CALL_END \
}
#endif
/* -------------------------------- */
} /* namespace PTC */
#endif /* PTC_UTIL_ERROR_HANDLER_H */
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