diff options
Diffstat (limited to 'engines/wintermute/base/BDynBuffer.cpp')
| -rw-r--r-- | engines/wintermute/base/BDynBuffer.cpp | 192 |
1 files changed, 192 insertions, 0 deletions
diff --git a/engines/wintermute/base/BDynBuffer.cpp b/engines/wintermute/base/BDynBuffer.cpp new file mode 100644 index 0000000000..9a2e071287 --- /dev/null +++ b/engines/wintermute/base/BDynBuffer.cpp @@ -0,0 +1,192 @@ +/* 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.
+ *
+ */
+
+/*
+ * This file is based on WME Lite.
+ * http://dead-code.org/redir.php?target=wmelite
+ * Copyright (c) 2011 Jan Nedoma
+ */
+
+#include "engines/wintermute/base/BGame.h"
+#include "engines/wintermute/base/BDynBuffer.h"
+
+namespace WinterMute {
+
+//////////////////////////////////////////////////////////////////////////
+CBDynBuffer::CBDynBuffer(CBGame *inGame, uint32 initSize, uint32 growBy): CBBase(inGame) {
+ _buffer = NULL;
+ _size = 0;
+ _realSize = 0;
+
+ _offset = 0;
+ _initSize = initSize;
+ _growBy = growBy;
+
+ _initialized = false;
+}
+
+
+//////////////////////////////////////////////////////////////////////////
+CBDynBuffer::~CBDynBuffer() {
+ cleanup();
+}
+
+
+//////////////////////////////////////////////////////////////////////////
+void CBDynBuffer::cleanup() {
+ if (_buffer) free(_buffer);
+ _buffer = NULL;
+ _size = 0;
+ _realSize = 0;
+ _offset = 0;
+ _initialized = false;
+}
+
+
+//////////////////////////////////////////////////////////////////////////
+uint32 CBDynBuffer::getSize() {
+ return _size;
+}
+
+
+//////////////////////////////////////////////////////////////////////////
+bool CBDynBuffer::init(uint32 initSize) {
+ cleanup();
+
+ if (initSize == 0) initSize = _initSize;
+
+ _buffer = (byte *)malloc(initSize);
+ if (!_buffer) {
+ _gameRef->LOG(0, "CBDynBuffer::Init - Error allocating %d bytes", initSize);
+ return STATUS_FAILED;
+ }
+
+ _realSize = initSize;
+ _initialized = true;
+
+ return STATUS_OK;
+}
+
+
+//////////////////////////////////////////////////////////////////////////
+bool CBDynBuffer::putBytes(byte *buffer, uint32 size) {
+ if (!_initialized) init();
+
+ while (_offset + size > _realSize) {
+ _realSize += _growBy;
+ _buffer = (byte *)realloc(_buffer, _realSize);
+ if (!_buffer) {
+ _gameRef->LOG(0, "CBDynBuffer::PutBytes - Error reallocating buffer to %d bytes", _realSize);
+ return STATUS_FAILED;
+ }
+ }
+
+ memcpy(_buffer + _offset, buffer, size);
+ _offset += size;
+ _size += size;
+
+ return STATUS_OK;
+}
+
+
+//////////////////////////////////////////////////////////////////////////
+bool CBDynBuffer::getBytes(byte *buffer, uint32 size) {
+ if (!_initialized) init();
+
+ if (_offset + size > _size) {
+ _gameRef->LOG(0, "CBDynBuffer::GetBytes - Buffer underflow");
+ return STATUS_FAILED;
+ }
+
+ memcpy(buffer, _buffer + _offset, size);
+ _offset += size;
+
+ return STATUS_OK;
+}
+
+
+//////////////////////////////////////////////////////////////////////////
+void CBDynBuffer::putDWORD(uint32 val) {
+ putBytes((byte *)&val, sizeof(uint32));
+}
+
+
+//////////////////////////////////////////////////////////////////////////
+uint32 CBDynBuffer::getDWORD() {
+ uint32 ret;
+ getBytes((byte *)&ret, sizeof(uint32));
+ return ret;
+}
+
+
+//////////////////////////////////////////////////////////////////////////
+void CBDynBuffer::putString(const char *val) {
+ if (!val) putString("(null)");
+ else {
+ putDWORD(strlen(val) + 1);
+ putBytes((byte *)val, strlen(val) + 1);
+ }
+}
+
+
+//////////////////////////////////////////////////////////////////////////
+char *CBDynBuffer::getString() {
+ uint32 len = getDWORD();
+ char *ret = (char *)(_buffer + _offset);
+ _offset += len;
+
+ if (!strcmp(ret, "(null)")) return NULL;
+ else return ret;
+}
+
+
+//////////////////////////////////////////////////////////////////////////
+void CBDynBuffer::putText(const char *fmt, ...) {
+ va_list va;
+
+ va_start(va, fmt);
+ putTextForm(fmt, va);
+ va_end(va);
+
+}
+
+
+//////////////////////////////////////////////////////////////////////////
+void CBDynBuffer::putTextIndent(int indent, const char *fmt, ...) {
+ va_list va;
+
+ putText("%*s", indent, "");
+
+ va_start(va, fmt);
+ putTextForm(fmt, va);
+ va_end(va);
+}
+
+
+//////////////////////////////////////////////////////////////////////////
+void CBDynBuffer::putTextForm(const char *format, va_list argptr) {
+ char buff[32768];
+ vsprintf(buff, format, argptr);
+ putBytes((byte *)buff, strlen(buff));
+}
+
+} // end of namespace WinterMute
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