COMMON: Remove dependency on engines code (by using the inversion principle).

svn-id: r46130
This commit is contained in:
Max Horn 2009-11-24 22:11:07 +00:00
parent 5e0f79a2ed
commit 1a313a7eca
8 changed files with 289 additions and 142 deletions

144
common/console.cpp Normal file
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@ -0,0 +1,144 @@
/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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.
*
* $URL$
* $Id$
*/
#include "common/console.h"
#include "common/system.h"
namespace Common {
static OutputFormatter s_errorOutputFormatter = 0;
void setErrorOutputFormatter(OutputFormatter f) {
s_errorOutputFormatter = f;
}
static ErrorHandler s_errorHandler = 0;
void setErrorHandler(ErrorHandler handler) {
s_errorHandler = handler;
}
} // End of namespace Common
#ifndef DISABLE_TEXT_CONSOLE
void warning(const char *s, ...) {
char buf[STRINGBUFLEN];
va_list va;
va_start(va, s);
vsnprintf(buf, STRINGBUFLEN, s, va);
va_end(va);
#if !defined (__SYMBIAN32__)
fputs("WARNING: ", stderr);
fputs(buf, stderr);
fputs("!\n", stderr);
#endif
#if defined( USE_WINDBG )
strcat(buf, "\n");
#if defined( _WIN32_WCE )
TCHAR buf_unicode[1024];
MultiByteToWideChar(CP_ACP, 0, buf, strlen(buf) + 1, buf_unicode, sizeof(buf_unicode));
OutputDebugString(buf_unicode);
#else
OutputDebugString(buf);
#endif
#endif
}
#endif
void NORETURN error(const char *s, ...) {
char buf_input[STRINGBUFLEN];
char buf_output[STRINGBUFLEN];
va_list va;
// Generate the full error message
va_start(va, s);
vsnprintf(buf_input, STRINGBUFLEN, s, va);
va_end(va);
// Next, give the active engine (if any) a chance to augment the message
if (Common::s_errorOutputFormatter) {
(*Common::s_errorOutputFormatter)(buf_output, buf_input, STRINGBUFLEN);
} else {
strncpy(buf_output, buf_input, STRINGBUFLEN);
}
buf_output[STRINGBUFLEN-3] = '\0';
buf_output[STRINGBUFLEN-2] = '\0';
buf_output[STRINGBUFLEN-1] = '\0';
strcat(buf_output, "!\n");
// Print the error message to stderr
fputs(buf_output, stderr);
// If there is an error handler, invoke it now
if (Common::s_errorHandler)
(*Common::s_errorHandler)(buf_output);
// TODO: Add a OSystem::fatalError() method and invoke it here.
// The default implementation would just call OSystem::quit().
#if defined( USE_WINDBG )
#if defined( _WIN32_WCE )
TCHAR buf_output_unicode[1024];
MultiByteToWideChar(CP_ACP, 0, buf_output, strlen(buf_output) + 1, buf_output_unicode, sizeof(buf_output_unicode));
OutputDebugString(buf_output_unicode);
#ifndef DEBUG
drawError(buf_output);
#else
int cmon_break_into_the_debugger_if_you_please = *(int *)(buf_output + 1); // bus error
printf("%d", cmon_break_into_the_debugger_if_you_please); // don't optimize the int out
#endif
#else
OutputDebugString(buf_output);
#endif
#endif
#ifdef PALMOS_MODE
extern void PalmFatalError(const char *err);
PalmFatalError(buf_output);
#endif
#ifdef __SYMBIAN32__
Symbian::FatalError(buf_output);
#endif
// Finally exit. quit() will terminate the program if g_system is present
if (g_system)
g_system->quit();
#if defined(SAMSUNGTV)
// FIXME
for (;;) {}
#else
exit(1);
#endif
}

89
common/console.h Normal file
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@ -0,0 +1,89 @@
/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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.
*
* $URL$
* $Id$
*/
#ifndef COMMON_CONSOLE_H
#define COMMON_CONSOLE_H
#include "common/scummsys.h"
namespace Common {
/**
* An output formatter takes a source string and 'decorates' it with
* extra information, storing the result in a destination buffer.
* A typical use is to (optionally) enhance the output given by
* the error() and debug() functions with extra information on
* the state of the active engine.
*/
typedef void (*OutputFormatter)(char *dst, const char *src, size_t dstSize);
/**
* Set the output formatter used by error().
*/
void setErrorOutputFormatter(OutputFormatter f);
/**
* A callback which is invoked by error() just before aborting.
* A typical example would be a function which shows a debug
* console and displays the given message in it.
*/
typedef void (*ErrorHandler)(const char *msg);
/**
* Set a callback that is invoked by error() after the error
* message has been printed, but before the application is
* terminated.
* This can be used to e.g. show a debugger console.
*/
void setErrorHandler(ErrorHandler handler);
} // End of namespace Common
#if defined(__GNUC__)
void error(const char *s, ...) GCC_PRINTF(1, 2) NORETURN;
#else
void NORETURN error(const char *s, ...);
#endif
#ifdef DISABLE_TEXT_CONSOLE
inline int printf(const char *s, ...) { return 0; }
inline void warning(const char *s, ...) {}
#else
/**
* Print a warning message to the text console (stderr).
* Automatically prepends the text "WARNING: " and appends
* an exclamation mark and a newline.
*/
void warning(const char *s, ...) GCC_PRINTF(1, 2);
#endif
#endif

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@ -25,8 +25,7 @@
#include "common/debug.h"
#include "common/util.h"
#include "common/hashmap.h"
#include "engines/engine.h"
#include "common/hash-str.h"
#include <stdarg.h> // For va_list etc.
@ -47,6 +46,12 @@
#endif
// TODO: Move gDebugLevel into namespace Common.
int gDebugLevel = -1;
namespace Common {
namespace {
@ -135,11 +140,16 @@ bool isDebugChannelEnabled(const String &name) {
}
static OutputFormatter s_debugOutputFormatter = 0;
void setDebugOutputFormatter(OutputFormatter f) {
s_debugOutputFormatter = f;
}
} // End of namespace Common
int gDebugLevel = -1;
#ifndef DISABLE_TEXT_CONSOLE
static void debugHelper(const char *s, va_list va, bool caret = true) {
@ -149,8 +159,8 @@ static void debugHelper(const char *s, va_list va, bool caret = true) {
// Next, give the active engine (if any) a chance to augment the message,
// but only if not used from debugN.
if (g_engine && caret) {
g_engine->errorString(in_buf, buf, STRINGBUFLEN);
if (Common::s_debugOutputFormatter) {
(*Common::s_debugOutputFormatter)(buf, in_buf, STRINGBUFLEN);
} else {
strncpy(buf, in_buf, STRINGBUFLEN);
}

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@ -26,6 +26,7 @@
#define COMMON_DEBUG_H
#include "common/scummsys.h"
#include "common/console.h"
#include "common/list.h"
#include "common/str.h"
@ -96,6 +97,12 @@ bool isDebugChannelEnabled(uint32 level);
bool isDebugChannelEnabled(const String &name);
/**
* Set the output formatter used by debug() and related functions.
*/
void setDebugOutputFormatter(OutputFormatter f);
} // End of namespace Common

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@ -4,6 +4,7 @@ MODULE_OBJS := \
archive.o \
config-file.o \
config-manager.o \
console.o \
debug.o \
EventDispatcher.o \
EventRecorder.o \

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@ -25,8 +25,6 @@
#include "common/util.h"
#include "common/system.h"
#include "common/config-manager.h"
#include "gui/debugger.h"
#include "engines/engine.h"
#include <stdarg.h> // For va_list etc.
@ -421,113 +419,3 @@ void updateGameGUIOptions(const uint32 options) {
}
} // End of namespace Common
#ifndef DISABLE_TEXT_CONSOLE
void warning(const char *s, ...) {
char buf[STRINGBUFLEN];
va_list va;
va_start(va, s);
vsnprintf(buf, STRINGBUFLEN, s, va);
va_end(va);
#if !defined (__SYMBIAN32__)
fputs("WARNING: ", stderr);
fputs(buf, stderr);
fputs("!\n", stderr);
#endif
#if defined( USE_WINDBG )
strcat(buf, "\n");
#if defined( _WIN32_WCE )
TCHAR buf_unicode[1024];
MultiByteToWideChar(CP_ACP, 0, buf, strlen(buf) + 1, buf_unicode, sizeof(buf_unicode));
OutputDebugString(buf_unicode);
#else
OutputDebugString(buf);
#endif
#endif
}
#endif
void NORETURN error(const char *s, ...) {
char buf_input[STRINGBUFLEN];
char buf_output[STRINGBUFLEN];
va_list va;
// Generate the full error message
va_start(va, s);
vsnprintf(buf_input, STRINGBUFLEN, s, va);
va_end(va);
// Next, give the active engine (if any) a chance to augment the message
if (g_engine) {
g_engine->errorString(buf_input, buf_output, STRINGBUFLEN);
} else {
strncpy(buf_output, buf_input, STRINGBUFLEN);
}
buf_output[STRINGBUFLEN-3] = '\0';
buf_output[STRINGBUFLEN-2] = '\0';
buf_output[STRINGBUFLEN-1] = '\0';
strcat(buf_output, "!\n");
// Print the error message to stderr
fputs(buf_output, stderr);
// Unless this error -originated- within the debugger itself, we
// now invoke the debugger, if available / supported.
if (g_engine) {
GUI::Debugger *debugger = g_engine->getDebugger();
#ifdef _WIN32_WCE
if (isSmartphone())
debugger = 0;
#endif
if (debugger && !debugger->isAttached()) {
debugger->attach(buf_output);
debugger->onFrame();
}
}
#if defined( USE_WINDBG )
#if defined( _WIN32_WCE )
TCHAR buf_output_unicode[1024];
MultiByteToWideChar(CP_ACP, 0, buf_output, strlen(buf_output) + 1, buf_output_unicode, sizeof(buf_output_unicode));
OutputDebugString(buf_output_unicode);
#ifndef DEBUG
drawError(buf_output);
#else
int cmon_break_into_the_debugger_if_you_please = *(int *)(buf_output + 1); // bus error
printf("%d", cmon_break_into_the_debugger_if_you_please); // don't optimize the int out
#endif
#else
OutputDebugString(buf_output);
#endif
#endif
#ifdef PALMOS_MODE
extern void PalmFatalError(const char *err);
PalmFatalError(buf_output);
#endif
#ifdef __SYMBIAN32__
Symbian::FatalError(buf_output);
#endif
// Finally exit. quit() will terminate the program if g_system is present
if (g_system)
g_system->quit();
#if defined(SAMSUNGTV)
// FIXME
for (;;) {}
#else
exit(1);
#endif
}

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@ -26,6 +26,7 @@
#define COMMON_UTIL_H
#include "common/scummsys.h"
#include "common/console.h"
#include "common/str.h"
@ -293,28 +294,4 @@ void updateGameGUIOptions(const uint32 options);
} // End of namespace Common
#if defined(__GNUC__)
void error(const char *s, ...) GCC_PRINTF(1, 2) NORETURN;
#else
void NORETURN error(const char *s, ...);
#endif
#ifdef DISABLE_TEXT_CONSOLE
inline int printf(const char *s, ...) { return 0; }
inline void warning(const char *s, ...) {}
#else
/**
* Print a warning message to the text console (stderr).
* Automatically prepends the text "WARNING: " and appends
* an exclamation mark and a newline.
*/
void warning(const char *s, ...) GCC_PRINTF(1, 2);
#endif
#endif

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@ -31,11 +31,13 @@
#include "engines/engine.h"
#include "common/config-manager.h"
#include "common/debug.h"
#include "common/events.h"
#include "common/file.h"
#include "common/timer.h"
#include "common/savefile.h"
#include "common/system.h"
#include "gui/debugger.h"
#include "gui/message.h"
#include "gui/GuiManager.h"
#include "sound/mixer.h"
@ -49,6 +51,32 @@ extern bool isSmartphone();
// FIXME: HACK for MidiEmu & error()
Engine *g_engine = 0;
// Output formatter for debug() and error() which invokes
// the errorString method of the active engine, if any.
static void defaultOutputFormatter(char *dst, const char *src, size_t dstSize) {
if (g_engine) {
g_engine->errorString(src, dst, dstSize);
} else {
strncpy(dst, src, dstSize);
}
}
static void defaultErrorHandler(const char *msg) {
// Unless this error -originated- within the debugger itself, we
// now invoke the debugger, if available / supported.
if (g_engine) {
GUI::Debugger *debugger = g_engine->getDebugger();
#ifdef _WIN32_WCE
if (isSmartphone())
debugger = 0;
#endif
if (debugger && !debugger->isAttached()) {
debugger->attach(msg);
debugger->onFrame();
}
}
}
Engine::Engine(OSystem *syst)
: _system(syst),
@ -62,6 +90,9 @@ Engine::Engine(OSystem *syst)
_mainMenuDialog(NULL) {
g_engine = this;
Common::setDebugOutputFormatter(defaultOutputFormatter);
Common::setErrorOutputFormatter(defaultOutputFormatter);
Common::setErrorHandler(defaultErrorHandler);
// FIXME: Get rid of the following again. It is only here temporarily.
// We really should never run with a non-working Mixer, so ought to handle