From e29ec6e79c325bcea2c95ecbfeb3a64c80a30630 Mon Sep 17 00:00:00 2001
From: Paweł Kołodziejski
Date: Wed, 5 May 2004 07:25:32 +0000
Subject: adding initial code for Another World engine

svn-id: r13783
---
 awe/file.cpp | 190 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 190 insertions(+)
 create mode 100644 awe/file.cpp

(limited to 'awe/file.cpp')

diff --git a/awe/file.cpp b/awe/file.cpp
new file mode 100644
index 0000000000..15dead158e
--- /dev/null
+++ b/awe/file.cpp
@@ -0,0 +1,190 @@
+/* AWE - Another World Engine
+ * Copyright (C) 2004 Gregory Montoir
+ * Copyright (C) 2004 The ScummVM project
+ *
+ * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
+
+#include "stdafx.h"
+
+#include "zlib.h"
+#include "file.h"
+
+namespace Awe {
+
+struct File_impl {
+	bool _ioErr;
+	File_impl() : _ioErr(false) {}
+	virtual bool open(const char *path, const char *mode) = 0;
+	virtual void close() = 0;
+	virtual void seek(int32 off) = 0;
+	virtual void read(void *ptr, uint32 size) = 0;
+	virtual void write(void *ptr, uint32 size) = 0;
+};
+
+struct stdFile : File_impl {
+	FILE *_fp;
+	stdFile() : _fp(0) {}
+	bool open(const char *path, const char *mode) {
+		_ioErr = false;
+		_fp = fopen(path, mode);
+		return (_fp != NULL);
+	}
+	void close() {
+		if (_fp) {
+			fclose(_fp);
+			_fp = 0;
+		}
+	}
+	void seek(int32 off) {
+		if (_fp) {
+			fseek(_fp, off, SEEK_SET);
+		}
+	}
+	void read(void *ptr, uint32 size) {
+		if (_fp) {
+			uint32 r = fread(ptr, 1, size, _fp);
+			if (r != size) {
+				_ioErr = true;
+			}
+		}
+	}
+	void write(void *ptr, uint32 size) {
+		if (_fp) {
+			uint32 r = fwrite(ptr, 1, size, _fp);
+			if (r != size) {
+				_ioErr = true;
+			}
+		}
+	}
+};
+
+struct zlibFile : File_impl {
+	gzFile _fp;
+	zlibFile() : _fp(0) {}
+	bool open(const char *path, const char *mode) {
+		_ioErr = false;
+		_fp = gzopen(path, mode);
+		return (_fp != NULL);
+	}
+	void close() {
+		if (_fp) {
+			gzclose(_fp);
+			_fp = 0;
+		}
+	}
+	void seek(int32 off) {
+		if (_fp) {
+			gzseek(_fp, off, SEEK_SET);
+		}
+	}
+	void read(void *ptr, uint32 size) {
+		if (_fp) {
+			uint32 r = gzread(_fp, ptr, size);
+			if (r != size) {
+				_ioErr = true;
+			}
+		}
+	}
+	void write(void *ptr, uint32 size) {
+		if (_fp) {
+			uint32 r = gzwrite(_fp, ptr, size);
+			if (r != size) {
+				_ioErr = true;
+			}
+		}
+	}
+};
+
+File::File(bool gzipped) {
+	if (gzipped) {
+		_impl = new zlibFile;
+	} else {
+		_impl = new stdFile;
+	}
+}
+
+File::~File() {
+	_impl->close();
+	delete _impl;
+}
+
+bool File::open(const char *filename, const char *directory, const char *mode) {	
+	_impl->close();
+	char buf[512];
+	sprintf(buf, "%s/%s", directory, filename);
+	char *p = buf + strlen(directory) + 1;
+	string_lower(p);
+	bool opened = _impl->open(buf, mode);
+	if (!opened) { // let's try uppercase
+		string_upper(p);
+		opened = _impl->open(buf, mode);
+	}
+	return opened;
+}
+
+void File::close() {
+	_impl->close();
+}
+
+bool File::ioErr() const {
+	return _impl->_ioErr;
+}
+
+void File::seek(int32 off) {
+	_impl->seek(off);
+}
+
+void File::read(void *ptr, uint32 size) {
+	_impl->read(ptr, size);
+}
+
+uint8 File::readByte() {
+	uint8 b;
+	read(&b, 1);
+	return b;
+}
+
+uint16 File::readUint16BE() {
+	uint8 hi = readByte();
+	uint8 lo = readByte();
+	return (hi << 8) | lo;
+}
+
+uint32 File::readUint32BE() {
+	uint16 hi = readUint16BE();
+	uint16 lo = readUint16BE();
+	return (hi << 16) | lo;
+}
+
+void File::write(void *ptr, uint32 size) {
+	_impl->write(ptr, size);
+}
+
+void File::writeByte(uint8 b) {
+	write(&b, 1);
+}
+
+void File::writeUint16BE(uint16 n) {
+	writeByte(n >> 8);
+	writeByte(n & 0xFF);
+}
+
+void File::writeUint32BE(uint32 n) {
+	writeUint16BE(n >> 16);
+	writeUint16BE(n & 0xFFFF);
+}
+
+}
-- 
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