initial checkin

vfs-methods/fontilus/ftstream-vfs.c

@@ -0,0 +1,118 @@
+/* -*- mode: C; c-basic-offset: 4 -*- */
+#include <stdlib.h>
+#include <ft2build.h>
+#include FT_FREETYPE_H
+#include <libgnomevfs/gnome-vfs.h>
+
+static unsigned long
+vfs_stream_read(FT_Stream stream,
+		unsigned long offset,
+		unsigned char *buffer,
+		unsigned long count)
+{
+    GnomeVFSHandle *handle = (GnomeVFSHandle *)stream->descriptor.pointer;
+    GnomeVFSFileSize bytes_read = 0;
+
+    if (gnome_vfs_seek(handle, GNOME_VFS_SEEK_START, offset) != GNOME_VFS_OK)
+	return 0;
+    if (count > 0) {
+	if (gnome_vfs_read(handle, buffer, count, &bytes_read) != GNOME_VFS_OK)
+	    return 0;
+    }
+    return bytes_read;
+}
+
+static void
+vfs_stream_close(FT_Stream stream)
+{
+    GnomeVFSHandle *handle = (GnomeVFSHandle *)stream->descriptor.pointer;
+
+    g_message("closing handle");
+    if (!handle)
+	return;
+    gnome_vfs_close(handle);
+
+    stream->descriptor.pointer = NULL;
+    stream->size               = 0;
+    stream->base               = 0;    
+}
+
+static FT_Error
+vfs_stream_open(FT_Stream stream,
+		const char *uri)
+{
+    GnomeVFSHandle *handle;
+    GnomeVFSFileInfo *finfo;
+
+    if (!stream)
+	return FT_Err_Invalid_Stream_Handle;
+
+    if (gnome_vfs_open(&handle, uri,
+	       GNOME_VFS_OPEN_READ | GNOME_VFS_OPEN_RANDOM) != GNOME_VFS_OK) {
+	g_message("could not open URI");
+	return FT_Err_Cannot_Open_Resource;
+    }
+
+    finfo = gnome_vfs_file_info_new();
+    if (gnome_vfs_get_file_info_from_handle(handle, finfo,0) != GNOME_VFS_OK) {
+	g_warning("could not get file info");
+	gnome_vfs_file_info_unref(finfo);
+	gnome_vfs_close(handle);
+	return FT_Err_Cannot_Open_Resource;
+    }
+
+    if ((finfo->valid_fields & GNOME_VFS_FILE_INFO_FIELDS_SIZE) == 0) {
+	g_warning("file info did not include file size");
+	gnome_vfs_file_info_unref(finfo);
+	gnome_vfs_close(handle);
+	return FT_Err_Cannot_Open_Resource;
+    }	
+    stream->size = finfo->size;
+    gnome_vfs_file_info_unref(finfo);
+
+    stream->descriptor.pointer = handle;
+    stream->pathname.pointer   = NULL;
+    stream->pos                = 0;
+
+    stream->read  = vfs_stream_read;
+    stream->close = vfs_stream_close;
+
+    return FT_Err_Ok;
+}
+
+/* load a typeface from a URI */
+FT_Error
+FT_New_URI_Face(FT_Library           library,
+		const gchar*         uri,
+		FT_Long              face_index,
+		FT_Face             *aface)
+{
+    FT_Open_Args args;
+    FT_Stream stream;
+    FT_Error error;
+
+    if ((stream = calloc(1, sizeof(FT_Stream))) == NULL)
+	return FT_Err_Out_Of_Memory;
+
+    error = vfs_stream_open(stream, uri);
+    if (error != FT_Err_Ok) {
+	free(stream);
+	return error;
+    }
+
+#ifndef FT_OPEN_STREAM
+#  define FT_OPEN_STREAM ft_open_stream
+#endif
+    args.flags  = FT_OPEN_STREAM;
+    args.stream = stream;
+
+    error = FT_Open_Face(library, &args, face_index, aface);
+
+    if (error != FT_Err_Ok) {
+	stream->close(stream);
+	free(stream);
+	return error;
+    }
+
+    return error;
+}