symbian-qemu-0.9.1-12/python-2.6.1/PC/import_nt.c
author johnathan.white@2718R8BGH51.accenture.com
Mon, 08 Mar 2010 18:45:03 +0000
changeset 46 b6935a90ca64
parent 1 2fb8b9db1c86
permissions -rw-r--r--
Modify framebuffer and NGA framebuffer to read screen size from board model dtb file. Optimise memory usuage of frame buffer Add example minigui application with hooks to profiler (which writes results to S:\). Modified NGA framebuffer to run its own dfc queue at high priority

/********************************************************************

 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;
}