Function fopenGzippedNew

LASlib/src/fopen_compressed.cpp:226–276

}

static FILE* fopenGzippedNew(const char* filename, const char* mode)
{
	// check mode
	if (mode[0] == 'r')
	{
		// create the pipe
		int hPipe[2];
		if (_pipe(hPipe, 2048, ((mode[1] =='b') ? _O_BINARY : _O_TEXT) | _O_NOINHERIT) == -1)
		{
			laserror("could not create pipe");
			return NULL;
		}

		// duplicate stdin/stdout handle so we can restore them later
		int hStdOut = _dup(_fileno(stdout));

		// make the write end of pipe go to stdout
		if (_dup2(hPipe[WRITE_HANDLE], _fileno(stdout)) != 0)
		{
			laserror("could not set pipe output");
			return NULL;
		}

		// redirect read end of pipe to input file
		if (_dup2(hPipe[READ_HANDLE], _fileno(stdin)) != 0)
		{
			laserror("could not redirect input file");
			return NULL;
		}

    // close original write end of pipe
		_close(hPipe[WRITE_HANDLE]);

		// Spawn process
		HANDLE hProcess = (HANDLE)_spawnlp(P_NOWAIT, "gzip", "gzip", "-dc", filename, NULL);

		// redirect stdout back into stdout
		if (_dup2(hStdOut, _fileno(stdout)) != 0)
		{
			laserror("could not reconstruct stdout");
			return NULL;
		}

		// return redirected stdin 
		return stdin;
	}
	else
	{
		return NULL;
	}
}

static FILE* fopenRARed(const char* filename, const char* mode)
{