sigonasr2/SHNFileDecryptor
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Optimize to use the same vector repeatedly and return a reference to it instead of copying.

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This commit is contained in:
sigonasr2 2023-08-05 17:50:12 -05:00
parent e516dbf65a
commit d0cc51f224
1 changed files with 11 additions and 9 deletions
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20
SHNFileDecryptor/SHNFileDecryptor.h
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@ -81,6 +81,8 @@ private:
std::vector<Column>columns;
std::vector<std::vector<Data>>contents;
std::string filename;
std::vector<std::byte>readArr;
std::byte*fileMarker=0;
public:
void Load(std::string file);
void Save();
@ -140,8 +142,8 @@ void SHNFile::Decrypt(){
num = num3;
}
}
std::vector<std::byte>SHNFile::ReadBytes(int bytes){
std::vector<std::byte>byteArr={};
std::vector<std::byte>&SHNFile::ReadBytes(int bytes){
readArr.clear();
for(int i=0;i<bytes;i++){
if(marker<data.size()){
byteArr.push_back(data[marker]);
@ -153,7 +155,7 @@ std::vector<std::byte>SHNFile::ReadBytes(int bytes){
return byteArr;
}
std::byte SHNFile::ReadByte(){
std::vector<std::byte>b=ReadBytes(1);
std::vector<std::byte>&b=ReadBytes(1);
if(b.size()>0){
return b[0];
} else {
@ -167,7 +169,7 @@ void SHNFile::WriteSByte(std::ofstream&f,sbyte b){
f<<char(b);
}
uint16_t SHNFile::ReadUInt16(){
std::vector<std::byte>intBytes=ReadBytes(2);
std::vector<std::byte>&intBytes=ReadBytes(2);
uint16_t numb = uint16_t(intBytes[1])<<8|uint16_t(intBytes[0]);
return numb;
}
@ -175,7 +177,7 @@ void SHNFile::WriteUInt16(std::ofstream&f,uint16_t val){
f<<unsigned char(val&0xFF)<<unsigned char((val>>8)&0xFF);
}
int16_t SHNFile::ReadInt16(){
std::vector<std::byte>intBytes=ReadBytes(2);
std::vector<std::byte>&intBytes=ReadBytes(2);
int16_t numb = int16_t(intBytes[1])<<8|int16_t(intBytes[0]);
return numb;
}
@ -183,7 +185,7 @@ void SHNFile::WriteInt16(std::ofstream&f,int16_t val){
f<<unsigned char(val&0xFF)<<unsigned char((val>>8)&0xFF);
}
uint32_t SHNFile::ReadUInt32(){
std::vector<std::byte>intBytes=ReadBytes(4);
std::vector<std::byte>&intBytes=ReadBytes(4);
uint32_t numb = uint32_t(intBytes[3])<<24|uint32_t(intBytes[2])<<16|uint32_t(intBytes[1])<<8|uint32_t(intBytes[0]);
return numb;
}
@ -191,12 +193,12 @@ void SHNFile::WriteUInt32(std::ofstream&f,uint32_t val){
f<<unsigned char(val&0xFF)<<unsigned char((val>>8)&0xFF)<<unsigned char((val>>16)&0xFF)<<unsigned char((val>>24)&0xFF);
}
int SHNFile::Read(){
std::vector<std::byte>intBytes=ReadBytes(4);
std::vector<std::byte>&intBytes=ReadBytes(4);
int numb = int(intBytes[3])<<24|int(intBytes[2])<<16|int(intBytes[1])<<8|int(intBytes[0]);
return numb;
}
int32_t SHNFile::ReadInt32(){
std::vector<std::byte>intBytes=ReadBytes(4);
std::vector<std::byte>&intBytes=ReadBytes(4);
int32_t numb = int32_t(intBytes[3])<<24|int32_t(intBytes[2])<<16|int32_t(intBytes[1])<<8|uint32_t(intBytes[0]);
return numb;
}
@ -204,7 +206,7 @@ void SHNFile::WriteInt32(std::ofstream&f,int32_t val){
f<<unsigned char(val&0xFF)<<unsigned char((val>>8)&0xFF)<<unsigned char((val>>16)&0xFF)<<unsigned char((val>>24)&0xFF);
}
std::string SHNFile::ReadString(int bytes){
std::vector<std::byte>strBytes=ReadBytes(bytes);
std::vector<std::byte>&strBytes=ReadBytes(bytes);
std::string str="";
for(int i=0;i<strBytes.size();i++){
if(strBytes[i]!=std::byte(0)){