mirror of
https://github.com/ZDoom/wadext.git
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189 lines
4 KiB
C++
189 lines
4 KiB
C++
//
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//---------------------------------------------------------------------------
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//
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// Copyright(C) 2005-2016 Christoph Oelckers
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// All rights reserved.
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//
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// This program 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 3 of the License, or
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// (at your option) any later version.
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//
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// This program 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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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see http://www.gnu.org/licenses/
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//
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//--------------------------------------------------------------------------
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//
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#include <stdlib.h>
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#include <string.h>
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#include "ResourceFile.h"
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//==========================================================================
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//
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//
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//
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//==========================================================================
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CWADFile::CWADFile(const char * filename)
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{
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char type[4];
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int diroffset;
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int numlumps;
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m_NumLumps=0;
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m_LumpStart=0;
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m_Filename = strdup(filename);
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m_File=NULL;
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if (filename == NULL)
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{
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printf("No file name specified\n");
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return;
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}
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FILE *f = fopen(filename, "rb");
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if (!f)
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{
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printf("%s: unable to open\n", filename);
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return;
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}
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m_File = f;
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fread(&type, 1, 4, f);
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if (memcmp(type, "IWAD", 4) && memcmp(type, "PWAD", 4))
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{
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printf("%s: not a WAD file\n", filename);
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return;
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}
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fread(&numlumps, 4, 1, f);
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fread(&diroffset, 4, 1, f);
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m_NumLumps = numlumps;
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fseek(f, diroffset, SEEK_SET);
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CWADLump lump;
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for (int i = 0; i < numlumps; i++)
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{
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fread(&lump.offset, 4, 1, f);
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fread(&lump.length, 4, 1, f);
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fread(lump.name, 1, 8, f);
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lump.name[8]=0;
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lumps.Push(lump);
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}
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}
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//==========================================================================
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//
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//
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//
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//==========================================================================
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CWADFile::~CWADFile(void)
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{
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if (m_File) fclose(m_File);
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if (m_Filename!=NULL) free(m_Filename);
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}
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//==========================================================================
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//
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//
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//
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//==========================================================================
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int CWADFile::FindLump(const char * name)
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{
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for (int i = lumps.Size()-1; i>=0; i--)
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{
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if (!stricmp(name, lumps[i].name)) return i;
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}
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return -1;
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}
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//==========================================================================
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//
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//
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//
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//==========================================================================
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int CWADFile::GetLumpSize(int lump)
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{
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if ((unsigned)lump < lumps.Size() ) return lumps[lump].length;
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else return -1;
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}
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//==========================================================================
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//
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//
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//
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//==========================================================================
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void * CWADFile::ReadLump(int lump)
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{
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if ((unsigned)lump < lumps.Size() )
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{
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void * Ptr= malloc(lumps[lump].length);
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ReadLump(lump, Ptr);
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return Ptr;
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}
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return NULL;
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}
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//==========================================================================
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//
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//
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//
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//==========================================================================
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void CWADFile::ReadLump(int lump, void * Ptr)
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{
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if ((unsigned)lump < lumps.Size() )
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{
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fseek(m_File, lumps[lump].offset, SEEK_SET);
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fread(Ptr, 1, lumps[lump].length, m_File);
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}
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}
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//==========================================================================
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//
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//
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//
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//==========================================================================
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const char * CWADFile::GetLumpName(int lump)
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{
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if ((unsigned)lump < lumps.Size() )
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{
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return lumps[lump].name;
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}
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else
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{
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return NULL;
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}
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}
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//==========================================================================
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//
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//
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//
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//==========================================================================
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CWADFile *mainwad;
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void OpenMainWad(char *filename)
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{
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mainwad = new CWADFile(filename);
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if (mainwad->NumLumps() == 0)
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{
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exit(1);
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}
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}
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