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Updates to cache CRC values and folder traversal lookup

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This commit is contained in:
Mark Vejvoda
2010-04-29 06:10:51 +00:00
parent 712b09c928
commit 805015fd83
6 changed files with 414 additions and 340 deletions
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34
source/shared_lib/sources/util/checksum.cpp
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@@ -1,7 +1,7 @@
// ==============================================================
// This file is part of Glest Shared Library (www.glest.org)
//
// Copyright (C) 2001-2008 Marti<EFBFBD>o Figueroa
// Copyright (C) 2001-2008 Martio Figueroa
//
// You can redistribute this code and/or modify it under
// the terms of the GNU General Public License as published
@@ -25,20 +25,26 @@ namespace Shared{ namespace Util{
// class Checksum
// =====================================================
Checksum::Checksum(){
std::map<string,int32> Checksum::fileListCache;
Checksum::Checksum() {
sum= 0;
r= 55665;
c1= 52845;
c2= 22719;
}
void Checksum::addByte(int8 value){
void Checksum::addByte(int8 value) {
int32 cipher= (value ^ (r >> 8));
r= (cipher + r) * c1 + c2;
sum+= cipher;
}
void Checksum::addSum(int32 value) {
sum+= value;
}
void Checksum::addString(const string &value){
for(int i= 0; i<value.size(); ++i){
addByte(value[i]);
@@ -52,7 +58,6 @@ void Checksum::addFile(const string &path){
void Checksum::addFileToSum(const string &path){
FILE* file= fopen(path.c_str(), "rb");
if(file!=NULL){
addString(lastFile(path));
@@ -73,13 +78,28 @@ void Checksum::addFileToSum(const string &path){
int32 Checksum::getSum() {
if(fileList.size() > 0) {
SystemFlags::OutputDebug(SystemFlags::debugSystem,"In [%s::%s Line: %d] fileList.size() = %d\n",__FILE__,__FUNCTION__,__LINE__,fileList.size());
Checksum newResult;
for(std::map<string,int32>::iterator iterMap = fileList.begin();
iterMap != fileList.end(); iterMap++)
{
addFileToSum(iterMap->first);
iterMap != fileList.end(); iterMap++) {
if(Checksum::fileListCache.find(iterMap->first) == Checksum::fileListCache.end()) {
Checksum fileResult;
fileResult.addFileToSum(iterMap->first);
Checksum::fileListCache[iterMap->first] = fileResult.getSum();
SystemFlags::OutputDebug(SystemFlags::debugSystem,"In [%s::%s Line: %d] iterMap->first [%s] has CRC [%d]\n",__FILE__,__FUNCTION__,__LINE__,iterMap->first.c_str(),Checksum::fileListCache[iterMap->first]);
}
newResult.addSum(Checksum::fileListCache[iterMap->first]);
}
return newResult.getSum();
}
return sum;
}
int32 Checksum::getFinalFileListSum() {
sum = 0;
return getSum();
}
}}//end namespace