mirror of
https://github.com/Sneed-Group/Poodletooth-iLand
synced 2024-12-25 20:52:26 -06:00
86 lines
2.7 KiB
C
86 lines
2.7 KiB
C
/********************************************************************
|
|
|
|
import_nt.c
|
|
|
|
Win32 specific import code.
|
|
|
|
*/
|
|
|
|
#include "Python.h"
|
|
#include "osdefs.h"
|
|
#include <windows.h>
|
|
#include "importdl.h"
|
|
#include "malloc.h" /* for alloca */
|
|
|
|
/* a string loaded from the DLL at startup */
|
|
extern const char *PyWin_DLLVersionString;
|
|
|
|
FILE *PyWin_FindRegisteredModule(const char *moduleName,
|
|
struct filedescr **ppFileDesc,
|
|
char *pathBuf,
|
|
Py_ssize_t pathLen)
|
|
{
|
|
char *moduleKey;
|
|
const char keyPrefix[] = "Software\\Python\\PythonCore\\";
|
|
const char keySuffix[] = "\\Modules\\";
|
|
#ifdef _DEBUG
|
|
/* In debugging builds, we _must_ have the debug version
|
|
* registered.
|
|
*/
|
|
const char debugString[] = "\\Debug";
|
|
#else
|
|
const char debugString[] = "";
|
|
#endif
|
|
struct filedescr *fdp = NULL;
|
|
FILE *fp;
|
|
HKEY keyBase = HKEY_CURRENT_USER;
|
|
int modNameSize;
|
|
long regStat;
|
|
|
|
/* Calculate the size for the sprintf buffer.
|
|
* Get the size of the chars only, plus 1 NULL.
|
|
*/
|
|
size_t bufSize = sizeof(keyPrefix)-1 +
|
|
strlen(PyWin_DLLVersionString) +
|
|
sizeof(keySuffix) +
|
|
strlen(moduleName) +
|
|
sizeof(debugString) - 1;
|
|
/* alloca == no free required, but memory only local to fn,
|
|
* also no heap fragmentation!
|
|
*/
|
|
moduleKey = alloca(bufSize);
|
|
PyOS_snprintf(moduleKey, bufSize,
|
|
"Software\\Python\\PythonCore\\%s\\Modules\\%s%s",
|
|
PyWin_DLLVersionString, moduleName, debugString);
|
|
|
|
assert(pathLen < INT_MAX);
|
|
modNameSize = (int)pathLen;
|
|
regStat = RegQueryValue(keyBase, moduleKey, pathBuf, &modNameSize);
|
|
if (regStat != ERROR_SUCCESS) {
|
|
/* No user setting - lookup in machine settings */
|
|
keyBase = HKEY_LOCAL_MACHINE;
|
|
/* be anal - failure may have reset size param */
|
|
modNameSize = (int)pathLen;
|
|
regStat = RegQueryValue(keyBase, moduleKey,
|
|
pathBuf, &modNameSize);
|
|
|
|
if (regStat != ERROR_SUCCESS)
|
|
return NULL;
|
|
}
|
|
/* use the file extension to locate the type entry. */
|
|
for (fdp = _PyImport_Filetab; fdp->suffix != NULL; fdp++) {
|
|
size_t extLen = strlen(fdp->suffix);
|
|
assert(modNameSize >= 0); /* else cast to size_t is wrong */
|
|
if ((size_t)modNameSize > extLen &&
|
|
strnicmp(pathBuf + ((size_t)modNameSize-extLen-1),
|
|
fdp->suffix,
|
|
extLen) == 0)
|
|
break;
|
|
}
|
|
if (fdp->suffix == NULL)
|
|
return NULL;
|
|
fp = fopen(pathBuf, fdp->mode);
|
|
if (fp != NULL)
|
|
*ppFileDesc = fdp;
|
|
return fp;
|
|
}
|