Method ParseJsonFile

storage/connect/bsonudf.cpp:1624–1670

/ Parse a json file. */ /

/*  Parse a json file.                                                           */
/*********************************************************************************/
PBVAL BJNX::ParseJsonFile(PGLOBAL g, char *fn, int& pty, size_t& len)
{
	char   *memory;
	HANDLE  hFile;
	MEMMAP  mm;
	PBVAL   jsp;

	// Create the mapping file object
	hFile = CreateFileMap(g, fn, &mm, MODE_READ, false);

	if (hFile == INVALID_HANDLE_VALUE) {
		DWORD rc = GetLastError();

		if (!(*g->Message))
			snprintf(g->Message, sizeof(g->Message), MSG(OPEN_MODE_ERROR), "map", (int)rc, fn);

		return NULL;
	} // endif hFile

		// Get the file size
	len = (size_t)mm.lenL;

	if (mm.lenH)
		len += mm.lenH;

	memory = (char *)mm.memory;

	if (!len) {              // Empty or deleted file
		CloseFileHandle(hFile);
		return NULL;
	} // endif len

	if (!memory) {
		CloseFileHandle(hFile);
		snprintf(g->Message, sizeof(g->Message), MSG(MAP_VIEW_ERROR), fn, GetLastError());
		return NULL;
	} // endif Memory

	CloseFileHandle(hFile);  // Not used anymore

	// Parse the json file and allocate its tree structure
	g->Message[0] = 0;
	jsp = ParseJson(g, memory, len);
	pty = pretty;
	CloseMemMap(memory, len);
	return jsp;
} // end of ParseJsonFile

/*********************************************************************************/
/*  Make the result according to the first argument type.                        */