RLC.rar_rlc_rlc压缩法 python_rlc编码

#include "RLC.h" int main() { cout << endl << "请选择："; cout << endl << "===================="; cout << endl << "1.压缩(compress)" << endl << "2.解压(decompress)" << endl << "3.退出(exit)"; cout << endl << "====================" << endl; cin >> choose; while (choose != "3") { if (choose == "1") DoCompress(); else if (choose == "2") DoDeCompress(); else cout << "输入错误！" << endl; cout << endl << "请选择："; cout << endl << "===================="; cout << endl << "1.压缩(compress)" << endl << "2.解压(decompress)" << endl << "3.退出(exit)"; cout << endl << "====================" << endl; cin >> choose; } return 0; } // 选择压缩 void DoCompress() { cout << "请输入待压缩文件名："; cin >> filename; fin.open(filename.c_str(), ios_base::in | ios_base::binary); // 以二进制形式打开文件 if (fin.is_open()) { // 获取除扩展名外的文件名 int i; for (i = filename.length()-1; i >= 0; i --) if (filename[i] == '.') break; fout.open((filename.substr(0, i)+".lyh").c_str(), ios_base::out | ios_base::binary); i ++; // 以“.lyh”扩展名保存压缩后的文件名 for ( ; i < filename.length(); i ++) fout << filename[i]; fout << '.'; srcSize = desSize = 0; length = srcSize = 1; fin.read((char *)&temp, 1); while (fin.read((char *)&symbol, 1)) { srcSize ++; if (symbol == temp) length ++; else { desSize += 2; fout.write((char *)&length, 1); fout.write((char *)&temp, 1); length = 1; temp = symbol; } if (length == 255) { desSize += 2; length --; fout.write((char *)&length, 1); fout.write((char *)&temp, 1); length = 1; temp = symbol; } } fout.write((char *)&length, 1); fout.write((char *)&temp, 1); cout << "文件 " << filename << " 压缩成功！" << endl; cout << "压缩率为： " << (double)srcSize/desSize << endl; } else cout << "文件" << filename << " 打开错误！" << endl; fout.clear(); fout.close(); fin.clear(); fin.close(); } // 选择解压 void DoDeCompress() { cout << "请输入待解压文件名："; cin >> filename; fin.open(filename.c_str(), ios_base::in | ios_base::binary); // 以二进制形式打开文件 if (fin.is_open()) { // 获取除扩展名外的文件名 int i; for (i = filename.length()-1; i >= 0; i --) if (filename[i] == '.') break; filename = filename.substr(0, i+1); char ch; while (fin.get(ch)) { if (ch == '.') break; filename += ch; } fout.open(filename.c_str(), ios_base::out | ios_base::binary); while (fin.read((char *)&length, 1)) { fin.read((char *)&symbol, 1); for (i = 0; i < length; i ++) fout.write((char *)&symbol, 1); } cout << "文件 " << filename << " 解压成功！" << endl; } else cout << "文件 " << filename << " 打开错误！" << endl; fout.clear(); fout.close(); fin.clear(); fin.close(); }