Python|python调用C++实现在文件中搜索单词 Python|C++

test1.cpp

#include 【Python|python调用C++实现在文件中搜索单词】#include #include #include #include #include #include #include #include using line_no = std::vector::string>::size_type; class QueryResult; class TextQuery { public:TextQuery(std::ifstream&); ~TextQuery(); QueryResult query(const std::string&) const; private: std::shared_ptr::vector::string>> file; std::map::string, std::shared_ptr::set>> wm; }; class QueryResult { friend std::ostream& operator<<(std::ostream&, const QueryResult&); public: QueryResult(std::string s, std::shared_ptr::set> p, std::shared_ptr::vector::string>> f): sought(s), lines(p), file(f){} ~QueryResult(){}; private: std::string sought; std::shared_ptr::set> lines; std::shared_ptr::vector::string>> file; }; TextQuery::TextQuery(std::ifstream &is) :file(new std::vector::string>) { std::string text; while (std::getline(is, text)) { file->push_back(text); int n = file->size() - 1; std::istringstream line(text); std::string word; while (line >> word) { auto &lines = wm[word]; if (!lines) { lines.reset(new std::set); }lines->insert(n); } } }TextQuery::~TextQuery() { }QueryResult TextQuery::query(const std::string &sought) const { static std::shared_ptr::set> nodata(new std::set); auto loc = wm.find(sought); if (loc == wm.end()) { return QueryResult(sought, nodata, file); } else { return QueryResult(sought, loc->second, file); } }std::ostream& operator<<(std::ostream & os, const QueryResult &qr) { os << qr.sought << " occurs " << qr.lines->size() << " " << "times" << std::endl; for (auto num : *qr.lines) { os << "\t(line " << num + 1 << ") " << *(qr.file->begin() + num) << std::endl; }return os; }void runQueries(std::ifstream &infile) { TextQuery tq(infile); while (true) { std::cout << "enter word to look for, or q to quit: "; std::string s; if (!(std::cin >> s) || (s == "q")) break; std::cout << tq.query(s) << std::endl; } }// int main(int argc, char const *argv[]) // { //std::cout << argv[0] << std::endl; //std::cout << argv[1] << std::endl; //std::ifstream ifs; //ifs.open (argv[1], std::ifstream::in); //runQueries(ifs); //ifs.close(); //return 0; // }PyObject* WrappFun(PyObject* self, PyObject* args) { char *fileName; if (!PyArg_ParseTuple(args, "s", &fileName)) { std::cerr << "Parameter error!" << std::endl; return NULL; }std::cout << "Search file name: " << fileName << std::endl; std::ifstream ifs; ifs.open(fileName, std::ifstream::in); if (ifs.good()) { runQueries(ifs); } else { std::cerr << "file open error or no file!" << std::endl; } ifs.close(); return Py_BuildValue(""); }static PyMethodDef test_methods[] = { {"Fun", WrappFun, METH_VARARGS, "Search word in file"}, {NULL,NULL,0,NULL} }; #if (PY_VERSION_HEX >= 0x03000000)static struct PyModuleDef test1Module = { PyModuleDef_HEAD_INIT, "test1", /* name of module */ "Module: Search word in file",/* module documentation, may be NULL */ -1,/* size of per-interpreter state of the module, or -1 if the module keeps state in global variables. */ test_methods }; PyMODINIT_FUNC PyInit_test1(void) { return PyModule_Create(&test1Module); }#elseextern "C" void inittest1() { Py_InitModule("test1", test_methods); }#endif

C++的代码中已经对Python版本做了区分。
python版本是2.x使用下面命令（以python2.7为例）