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616 lines
12 KiB
C++
616 lines
12 KiB
C++
/*
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bParse
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Copyright (c) 2006-2009 Charlie C & Erwin Coumans http://gamekit.googlecode.com
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This software is provided 'as-is', without any express or implied warranty.
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In no event will the authors be held liable for any damages arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it freely,
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subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#include <assert.h>
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#include "b3DNA.h"
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#include "b3Chunk.h"
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#include <string.h>
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#include <stdlib.h>
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#include <stdio.h>
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//this define will force traversal of structures, to check backward (and forward) compatibility
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//#define TEST_BACKWARD_FORWARD_COMPATIBILITY
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using namespace bParse;
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// ----------------------------------------------------- //
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bDNA::bDNA()
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: mPtrLen(0)
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{
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// --
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}
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// ----------------------------------------------------- //
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bDNA::~bDNA()
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{
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// --
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}
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// ----------------------------------------------------- //
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bool bDNA::lessThan(bDNA *file)
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{
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return (m_Names.size() < file->m_Names.size());
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}
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// ----------------------------------------------------- //
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char *bDNA::getName(int ind)
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{
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assert(ind <= (int)m_Names.size());
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return m_Names[ind].m_name;
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}
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// ----------------------------------------------------- //
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char *bDNA::getType(int ind)
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{
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assert(ind <= (int)mTypes.size());
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return mTypes[ind];
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}
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// ----------------------------------------------------- //
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short *bDNA::getStruct(int ind)
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{
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assert(ind <= (int)mStructs.size());
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return mStructs[ind];
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}
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// ----------------------------------------------------- //
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short bDNA::getLength(int ind)
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{
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assert(ind <= (int)mTlens.size());
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return mTlens[ind];
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}
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// ----------------------------------------------------- //
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int bDNA::getReverseType(short type)
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{
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int *intPtr = mStructReverse.find(type);
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if (intPtr)
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return *intPtr;
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return -1;
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}
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// ----------------------------------------------------- //
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int bDNA::getReverseType(const char *type)
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{
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b3HashString key(type);
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int *valuePtr = mTypeLookup.find(key);
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if (valuePtr)
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return *valuePtr;
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return -1;
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}
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// ----------------------------------------------------- //
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int bDNA::getNumStructs()
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{
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return (int)mStructs.size();
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}
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// ----------------------------------------------------- //
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bool bDNA::flagNotEqual(int dna_nr)
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{
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assert(dna_nr <= (int)mCMPFlags.size());
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return mCMPFlags[dna_nr] == FDF_STRUCT_NEQU;
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}
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// ----------------------------------------------------- //
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bool bDNA::flagEqual(int dna_nr)
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{
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assert(dna_nr <= (int)mCMPFlags.size());
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int flag = mCMPFlags[dna_nr];
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return flag == FDF_STRUCT_EQU;
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}
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// ----------------------------------------------------- //
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bool bDNA::flagNone(int dna_nr)
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{
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assert(dna_nr <= (int)mCMPFlags.size());
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return mCMPFlags[dna_nr] == FDF_NONE;
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}
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// ----------------------------------------------------- //
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int bDNA::getPointerSize()
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{
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return mPtrLen;
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}
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// ----------------------------------------------------- //
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void bDNA::initRecurseCmpFlags(int iter)
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{
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// iter is FDF_STRUCT_NEQU
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short *oldStrc = mStructs[iter];
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short type = oldStrc[0];
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for (int i = 0; i < (int)mStructs.size(); i++)
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{
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if (i != iter && mCMPFlags[i] == FDF_STRUCT_EQU)
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{
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short *curStruct = mStructs[i];
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int eleLen = curStruct[1];
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curStruct += 2;
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for (int j = 0; j < eleLen; j++, curStruct += 2)
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{
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if (curStruct[0] == type)
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{
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//char *name = m_Names[curStruct[1]].m_name;
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//if (name[0] != '*')
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if (m_Names[curStruct[1]].m_isPointer)
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{
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mCMPFlags[i] = FDF_STRUCT_NEQU;
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initRecurseCmpFlags(i);
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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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void bDNA::initCmpFlags(bDNA *memDNA)
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{
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// compare the file to memory
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// this ptr should be the file data
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assert(!(m_Names.size() == 0)); // && "SDNA empty!");
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mCMPFlags.resize(mStructs.size(), FDF_NONE);
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int i;
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for (i = 0; i < (int)mStructs.size(); i++)
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{
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short *oldStruct = mStructs[i];
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int oldLookup = getReverseType(oldStruct[0]);
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if (oldLookup == -1)
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{
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mCMPFlags[i] = FDF_NONE;
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continue;
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}
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//char* typeName = mTypes[oldStruct[0]];
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//#define SLOW_FORWARD_COMPATIBLE 1
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#ifdef SLOW_FORWARD_COMPATIBLE
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char *typeName = mTypes[oldLookup];
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int newLookup = memDNA->getReverseType(typeName);
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if (newLookup == -1)
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{
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mCMPFlags[i] = FDF_NONE;
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continue;
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}
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short *curStruct = memDNA->mStructs[newLookup];
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#else
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// memory for file
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if (oldLookup < memDNA->mStructs.size())
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{
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short *curStruct = memDNA->mStructs[oldLookup];
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#endif
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// rebuild...
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mCMPFlags[i] = FDF_STRUCT_NEQU;
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#ifndef TEST_BACKWARD_FORWARD_COMPATIBILITY
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if (curStruct[1] == oldStruct[1])
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{
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// type len same ...
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if (mTlens[oldStruct[0]] == memDNA->mTlens[curStruct[0]])
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{
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bool isSame = true;
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int elementLength = oldStruct[1];
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curStruct += 2;
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oldStruct += 2;
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for (int j = 0; j < elementLength; j++, curStruct += 2, oldStruct += 2)
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{
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// type the same
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//const char* typeFileDNA = mTypes[oldStruct[0]];
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//const char* typeMemDNA = mTypes[curStruct[0]];
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if (strcmp(mTypes[oldStruct[0]], memDNA->mTypes[curStruct[0]]) != 0)
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{
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isSame = false;
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break;
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}
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// name the same
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if (strcmp(m_Names[oldStruct[1]].m_name, memDNA->m_Names[curStruct[1]].m_name) != 0)
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{
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isSame = false;
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break;
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}
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}
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// flag valid ==
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if (isSame)
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mCMPFlags[i] = FDF_STRUCT_EQU;
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}
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}
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#endif
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}
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}
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// recurse in
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for (i = 0; i < (int)mStructs.size(); i++)
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{
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if (mCMPFlags[i] == FDF_STRUCT_NEQU)
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initRecurseCmpFlags(i);
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}
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}
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static int name_is_array(char *name, int *dim1, int *dim2)
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{
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int len = strlen(name);
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/*fprintf(stderr,"[%s]",name);*/
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/*if (len >= 1) {
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if (name[len-1] != ']')
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return 1;
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}
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return 0;*/
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char *bp;
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int num;
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if (dim1)
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{
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*dim1 = 1;
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}
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if (dim2)
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{
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*dim2 = 1;
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}
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bp = strchr(name, '[');
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if (!bp)
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{
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return 0;
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}
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num = 0;
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while (++bp < name + len - 1)
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{
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const char c = *bp;
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if (c == ']')
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{
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break;
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}
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if (c <= '9' && c >= '0')
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{
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num *= 10;
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num += (c - '0');
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}
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else
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{
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printf("array parse error.\n");
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return 0;
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}
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}
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if (dim2)
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{
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*dim2 = num;
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}
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/* find second dim, if any. */
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bp = strchr(bp, '[');
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if (!bp)
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{
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return 1; /* at least we got the first dim. */
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}
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num = 0;
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while (++bp < name + len - 1)
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{
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const char c = *bp;
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if (c == ']')
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{
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break;
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}
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if (c <= '9' && c >= '0')
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{
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num *= 10;
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num += (c - '0');
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}
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else
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{
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printf("array2 parse error.\n");
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return 1;
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}
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}
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if (dim1)
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{
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if (dim2)
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{
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*dim1 = *dim2;
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*dim2 = num;
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}
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else
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{
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*dim1 = num;
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}
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}
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return 1;
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}
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// ----------------------------------------------------- //
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void bDNA::init(char *data, int len, bool swap)
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{
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int *intPtr = 0;
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short *shtPtr = 0;
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char *cp = 0;
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int dataLen = 0;
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//long nr=0;
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intPtr = (int *)data;
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/*
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SDNA (4 bytes) (magic number)
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NAME (4 bytes)
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<nr> (4 bytes) amount of names (int)
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<string>
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<string>
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*/
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if (strncmp(data, "SDNA", 4) == 0)
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{
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// skip ++ NAME
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intPtr++;
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intPtr++;
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}
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// Parse names
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if (swap)
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{
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*intPtr = ChunkUtils::swapInt(*intPtr);
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}
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dataLen = *intPtr;
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intPtr++;
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cp = (char *)intPtr;
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int i;
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for (i = 0; i < dataLen; i++)
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{
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bNameInfo info;
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info.m_name = cp;
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info.m_isPointer = (info.m_name[0] == '*') || (info.m_name[1] == '*');
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name_is_array(info.m_name, &info.m_dim0, &info.m_dim1);
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m_Names.push_back(info);
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while (*cp) cp++;
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cp++;
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}
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cp = b3AlignPointer(cp, 4);
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/*
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TYPE (4 bytes)
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<nr> amount of types (int)
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<string>
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<string>
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*/
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intPtr = (int *)cp;
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assert(strncmp(cp, "TYPE", 4) == 0);
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intPtr++;
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if (swap)
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{
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*intPtr = ChunkUtils::swapInt(*intPtr);
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}
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dataLen = *intPtr;
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intPtr++;
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cp = (char *)intPtr;
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for (i = 0; i < dataLen; i++)
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{
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mTypes.push_back(cp);
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while (*cp) cp++;
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cp++;
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}
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cp = b3AlignPointer(cp, 4);
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/*
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TLEN (4 bytes)
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<len> (short) the lengths of types
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<len>
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*/
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// Parse type lens
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intPtr = (int *)cp;
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assert(strncmp(cp, "TLEN", 4) == 0);
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intPtr++;
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dataLen = (int)mTypes.size();
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shtPtr = (short *)intPtr;
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for (i = 0; i < dataLen; i++, shtPtr++)
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{
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if (swap)
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shtPtr[0] = ChunkUtils::swapShort(shtPtr[0]);
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mTlens.push_back(shtPtr[0]);
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}
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if (dataLen & 1) shtPtr++;
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/*
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STRC (4 bytes)
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<nr> amount of structs (int)
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<typenr>
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<nr_of_elems>
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<typenr>
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<namenr>
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<typenr>
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<namenr>
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*/
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intPtr = (int *)shtPtr;
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cp = (char *)intPtr;
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assert(strncmp(cp, "STRC", 4) == 0);
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intPtr++;
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if (swap)
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{
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*intPtr = ChunkUtils::swapInt(*intPtr);
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}
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dataLen = *intPtr;
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intPtr++;
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shtPtr = (short *)intPtr;
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for (i = 0; i < dataLen; i++)
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{
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mStructs.push_back(shtPtr);
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if (swap)
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{
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shtPtr[0] = ChunkUtils::swapShort(shtPtr[0]);
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shtPtr[1] = ChunkUtils::swapShort(shtPtr[1]);
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int len = shtPtr[1];
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shtPtr += 2;
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for (int a = 0; a < len; a++, shtPtr += 2)
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{
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shtPtr[0] = ChunkUtils::swapShort(shtPtr[0]);
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shtPtr[1] = ChunkUtils::swapShort(shtPtr[1]);
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}
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}
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else
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shtPtr += (2 * shtPtr[1]) + 2;
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}
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// build reverse lookups
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for (i = 0; i < (int)mStructs.size(); i++)
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{
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short *strc = mStructs.at(i);
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if (!mPtrLen && strcmp(mTypes[strc[0]], "ListBase") == 0)
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{
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mPtrLen = mTlens[strc[0]] / 2;
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}
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mStructReverse.insert(strc[0], i);
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mTypeLookup.insert(b3HashString(mTypes[strc[0]]), i);
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}
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}
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// ----------------------------------------------------- //
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int bDNA::getArraySize(char *string)
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{
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int ret = 1;
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int len = strlen(string);
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char *next = 0;
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for (int i = 0; i < len; i++)
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{
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char c = string[i];
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if (c == '[')
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next = &string[i + 1];
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else if (c == ']')
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if (next)
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ret *= atoi(next);
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}
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// print (string << ' ' << ret);
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return ret;
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}
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void bDNA::dumpTypeDefinitions()
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{
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int i;
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int numTypes = mTypes.size();
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for (i = 0; i < numTypes; i++)
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{
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}
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for (i = 0; i < (int)mStructs.size(); i++)
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{
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int totalBytes = 0;
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short *oldStruct = mStructs[i];
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int oldLookup = getReverseType(oldStruct[0]);
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if (oldLookup == -1)
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{
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mCMPFlags[i] = FDF_NONE;
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continue;
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}
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short *newStruct = mStructs[oldLookup];
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char *typeName = mTypes[newStruct[0]];
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printf("%3d: %s ", i, typeName);
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//char *name = mNames[oldStruct[1]];
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int len = oldStruct[1];
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printf(" (%d fields) ", len);
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oldStruct += 2;
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printf("{");
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int j;
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for (j = 0; j < len; ++j, oldStruct += 2)
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{
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const char *name = m_Names[oldStruct[1]].m_name;
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printf("%s %s", mTypes[oldStruct[0]], name);
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int elemNumBytes = 0;
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int arrayDimensions = getArraySizeNew(oldStruct[1]);
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if (m_Names[oldStruct[1]].m_isPointer)
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{
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elemNumBytes = VOID_IS_8 ? 8 : 4;
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}
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else
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{
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elemNumBytes = getLength(oldStruct[0]);
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}
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printf(" /* %d bytes */", elemNumBytes * arrayDimensions);
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if (j == len - 1)
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{
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printf(";}");
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}
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else
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{
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printf("; ");
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}
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totalBytes += elemNumBytes * arrayDimensions;
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}
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printf("\ntotalBytes=%d\n\n", totalBytes);
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}
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#if 0
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/* dump out display of types and their sizes */
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for (i=0; i<bf->types_count; ++i) {
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/* if (!bf->types[i].is_struct)*/
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{
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printf("%3d: sizeof(%s%s)=%d",
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i,
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bf->types[i].is_struct ? "struct " : "atomic ",
|
|
bf->types[i].name, bf->types[i].size);
|
|
if (bf->types[i].is_struct) {
|
|
int j;
|
|
printf(", %d fields: { ", bf->types[i].fieldtypes_count);
|
|
for (j=0; j<bf->types[i].fieldtypes_count; ++j) {
|
|
printf("%s %s",
|
|
bf->types[bf->types[i].fieldtypes[j]].name,
|
|
bf->names[bf->types[i].fieldnames[j]]);
|
|
if (j == bf->types[i].fieldtypes_count-1) {
|
|
printf(";}");
|
|
} else {
|
|
printf("; ");
|
|
}
|
|
}
|
|
}
|
|
printf("\n\n");
|
|
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
|
|
//eof
|