1  /* Testing module for multi-phase initialization of extension modules (PEP 489)
       2   */
       3  
       4  #ifndef Py_BUILD_CORE_BUILTIN
       5  #  define Py_BUILD_CORE_MODULE 1
       6  #endif
       7  
       8  #include "Python.h"
       9  
      10  #ifdef MS_WINDOWS
      11  
      12  #include "pycore_fileutils.h"     // _Py_get_osfhandle()
      13  #include "..\modules\_io\_iomodule.h"
      14  
      15  #define WIN32_LEAN_AND_MEAN
      16  #include <windows.h>
      17  #include <fcntl.h>
      18  
      19   /* The full definition is in iomodule. We reproduce
      20   enough here to get the fd, which is all we want. */
      21  typedef struct {
      22      PyObject_HEAD
      23      int fd;
      24  } winconsoleio;
      25  
      26  
      27  static int execfunc(PyObject *m)
      28  {
      29      return 0;
      30  }
      31  
      32  PyModuleDef_Slot testconsole_slots[] = {
      33      {Py_mod_exec, execfunc},
      34      {0, NULL},
      35  };
      36  
      37  /*[clinic input]
      38  module _testconsole
      39  
      40  _testconsole.write_input
      41      file: object
      42      s: PyBytesObject
      43  
      44  Writes UTF-16-LE encoded bytes to the console as if typed by a user.
      45  [clinic start generated code]*/
      46  
      47  static PyObject *
      48  _testconsole_write_input_impl(PyObject *module, PyObject *file,
      49                                PyBytesObject *s)
      50  /*[clinic end generated code: output=48f9563db34aedb3 input=4c774f2d05770bc6]*/
      51  {
      52      INPUT_RECORD *rec = NULL;
      53  
      54      if (!PyWindowsConsoleIO_Check(file)) {
      55          PyErr_SetString(PyExc_TypeError, "expected raw console object");
      56          return NULL;
      57      }
      58  
      59      const wchar_t *p = (const wchar_t *)PyBytes_AS_STRING(s);
      60      DWORD size = (DWORD)PyBytes_GET_SIZE(s) / sizeof(wchar_t);
      61  
      62      rec = (INPUT_RECORD*)PyMem_Calloc(size, sizeof(INPUT_RECORD));
      63      if (!rec)
      64          goto error;
      65  
      66      INPUT_RECORD *prec = rec;
      67      for (DWORD i = 0; i < size; ++i, ++p, ++prec) {
      68          prec->EventType = KEY_EVENT;
      69          prec->Event.KeyEvent.bKeyDown = TRUE;
      70          prec->Event.KeyEvent.wRepeatCount = 1;
      71          prec->Event.KeyEvent.uChar.UnicodeChar = *p;
      72      }
      73  
      74      HANDLE hInput = _Py_get_osfhandle(((winconsoleio*)file)->fd);
      75      if (hInput == INVALID_HANDLE_VALUE)
      76          goto error;
      77  
      78      DWORD total = 0;
      79      while (total < size) {
      80          DWORD wrote;
      81          if (!WriteConsoleInputW(hInput, &rec[total], (size - total), &wrote)) {
      82              PyErr_SetFromWindowsErr(0);
      83              goto error;
      84          }
      85          total += wrote;
      86      }
      87  
      88      PyMem_Free((void*)rec);
      89  
      90      Py_RETURN_NONE;
      91  error:
      92      if (rec)
      93          PyMem_Free((void*)rec);
      94      return NULL;
      95  }
      96  
      97  /*[clinic input]
      98  _testconsole.read_output
      99      file: object
     100  
     101  Reads a str from the console as written to stdout.
     102  [clinic start generated code]*/
     103  
     104  static PyObject *
     105  _testconsole_read_output_impl(PyObject *module, PyObject *file)
     106  /*[clinic end generated code: output=876310d81a73e6d2 input=b3521f64b1b558e3]*/
     107  {
     108      Py_RETURN_NONE;
     109  }
     110  
     111  #include "clinic\_testconsole.c.h"
     112  
     113  PyMethodDef testconsole_methods[] = {
     114      _TESTCONSOLE_WRITE_INPUT_METHODDEF
     115      _TESTCONSOLE_READ_OUTPUT_METHODDEF
     116      {NULL, NULL}
     117  };
     118  
     119  static PyModuleDef testconsole_def = {
     120      PyModuleDef_HEAD_INIT,                      /* m_base */
     121      "_testconsole",                             /* m_name */
     122      PyDoc_STR("Test module for the Windows console"), /* m_doc */
     123      0,                                          /* m_size */
     124      testconsole_methods,                        /* m_methods */
     125      testconsole_slots,                          /* m_slots */
     126      NULL,                                       /* m_traverse */
     127      NULL,                                       /* m_clear */
     128      NULL,                                       /* m_free */
     129  };
     130  
     131  PyMODINIT_FUNC
     132  PyInit__testconsole(PyObject *spec)
     133  {
     134      return PyModuleDef_Init(&testconsole_def);
     135  }
     136  
     137  #endif /* MS_WINDOWS */