117 lines
3.3 KiB
C++
117 lines
3.3 KiB
C++
/*
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Copyright (C) 1999-2006 Id Software, Inc. and contributors.
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For a list of contributors, see the accompanying CONTRIBUTORS file.
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This file is part of GtkRadiant.
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GtkRadiant is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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GtkRadiant is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GtkRadiant; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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// cmdlib.h
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#pragma once
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#include "bytebool.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <utility>
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class void_ptr
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{
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void *ptr;
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public:
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void_ptr( void *p ) : ptr( p ) {}
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template<typename T>
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operator T*() const {
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return static_cast<T*>( ptr );
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}
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};
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class MemBuffer
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{
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byte *m_data;
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size_t m_size;
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public:
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MemBuffer() : m_data( nullptr ), m_size( 0 ) {}
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explicit MemBuffer( size_t size ) : m_data( new byte[ size + 1 ] ), m_size( size ) {
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m_data[m_size] = '\0'; // NOTE: when loading a file, you have to allocate one extra byte and set it to \0
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}
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MemBuffer( MemBuffer&& other ) noexcept : m_data( std::exchange( other.m_data, nullptr ) ), m_size( other.m_size ) {}
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MemBuffer& operator=( MemBuffer&& other ) noexcept {
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std::swap( m_data, other.m_data );
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std::swap( m_size, other.m_size );
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return *this;
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}
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~MemBuffer(){
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delete[] m_data;
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}
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void_ptr data() const {
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return m_data;
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}
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/// \return correct buffer size in bytes, if it's not empty. May be not used for validity check!
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size_t size() const {
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return m_size;
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}
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/// \return true, if there is managed buffer
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operator bool() const {
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return m_data != nullptr;
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}
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/// \brief Delegates the ownership. Obtained buffer must be deallocated by \c delete[]
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void_ptr release(){
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return std::exchange( m_data, nullptr );
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}
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};
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void_ptr safe_malloc( size_t size );
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void_ptr safe_calloc( size_t size );
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#define offsetof_array( TYPE, ARRAY_MEMBER, ARRAY_SIZE ) ( offsetof( TYPE, ARRAY_MEMBER[0] ) + sizeof( TYPE::ARRAY_MEMBER[0] ) * ARRAY_SIZE )
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void Q_getwd( char *out );
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int Q_filelength( FILE *f );
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void Q_mkdir( const char *path );
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char *ExpandArg( const char *path ); // from cmd line
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double I_FloatTime( void );
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FILE *SafeOpenWrite( const char *filename, const char *mode = "wb" );
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FILE *SafeOpenRead( const char *filename, const char *mode = "rb" );
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void SafeRead( FILE *f, MemBuffer& buffer );
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void SafeWrite( FILE *f, const void *buffer, int count );
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/// \brief loads file from absolute \p filename path or emits \c Error
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MemBuffer LoadFile( const char *filename );
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void SaveFile( const char *filename, const void *buffer, int count );
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bool FileExists( const char *filename );
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short BigShort( short l );
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short LittleShort( short l );
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int BigLong( int l );
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int LittleLong( int l );
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float BigFloat( float l );
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float LittleFloat( float l );
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// sleep for the given amount of milliseconds
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void Sys_Sleep( int n );
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