C++ (Cpp) g_mime_stream_seekの例

コード例 #1

ファイル: test-cat.c プロジェクト: CMogilko/gmime

static void
test_cat_seek (GMimeStream *whole, struct _StreamPart *parts, int bounded)
{
	struct _StreamPart *part = parts;
	GMimeStream *stream, *cat;
	gint64 offset, len;
	Exception *ex;
	int fd;
	
	if (whole->bound_end != -1) {
		len = whole->bound_end - whole->bound_start;
	} else if ((len = g_mime_stream_length (whole)) == -1) {
		ex = exception_new ("unable to get original stream length");
		throw (ex);
	}
	
	cat = g_mime_stream_cat_new ();
	
	while (part != NULL) {
		d(fprintf (stderr, "adding %s start=%lld, end=%lld...\n",
			   part->filename, part->pstart, part->pend));
		
		if ((fd = open (part->filename, O_RDONLY, 0)) == -1) {
			ex = exception_new ("could not open `%s': %s", part->filename, g_strerror (errno));
			g_object_unref (cat);
			throw (ex);
		}
		
		stream = g_mime_stream_fs_new_with_bounds (fd, part->pstart, bounded ? part->pend : -1);
		g_mime_stream_cat_add_source ((GMimeStreamCat *) cat, stream);
		g_object_unref (stream);
		
		part = part->next;
	}
	
	/* calculate a random seek offset to compare at */
	offset = (gint64) (len * (rand () / (RAND_MAX + 1.0)));
	
	if (g_mime_stream_seek (whole, offset, GMIME_STREAM_SEEK_SET) == -1) {
		ex = exception_new ("could not seek to %lld in original stream: %s",
				    offset, g_strerror (errno));
		throw (ex);
	}
	
	if (g_mime_stream_seek (cat, offset, GMIME_STREAM_SEEK_SET) == -1) {
		ex = exception_new ("could not seek to %lld: %s",
				    offset, g_strerror (errno));
		throw (ex);
	}
	
	if (check_streams_match (whole, cat, "stream.part*", TRUE) == -1) {
		ex = exception_new ("streams did not match");
		g_object_unref (cat);
		throw (ex);
	}
}

コード例 #2

ファイル: gmime-pkcs7-context.c プロジェクト: foudfou/gmime

static off_t
pkcs7_stream_seek (void *stream, off_t offset, int whence)
{
	switch (whence) {
	case SEEK_SET:
		return (off_t) g_mime_stream_seek ((GMimeStream *) stream, (gint64) offset, GMIME_STREAM_SEEK_SET);
	case SEEK_CUR:
		return (off_t) g_mime_stream_seek ((GMimeStream *) stream, (gint64) offset, GMIME_STREAM_SEEK_CUR);
	case SEEK_END:
		return (off_t) g_mime_stream_seek ((GMimeStream *) stream, (gint64) offset, GMIME_STREAM_SEEK_END);
	default:
		return -1;
	}
}

コード例 #3

ファイル: gmime-stream.c プロジェクト: tizenorg/platform.upstream.gmime

static gint64
stream_length (GMimeStream *stream)
{
	gint64 position = stream->position;
	gint64 bound_end;
	
	if (stream->bound_end != -1)
		return stream->bound_end - stream->bound_start;
	
	bound_end = g_mime_stream_seek (stream, 0, GMIME_STREAM_SEEK_END);
	g_mime_stream_seek (stream, position, GMIME_STREAM_SEEK_SET);
	
	if (bound_end < stream->bound_start)
		return -1;
	
	return bound_end - stream->bound_start;
}