1 files changed, 84 insertions, 0 deletions
diff --git a/camel/camel-mime-filter.h b/camel/camel-mime-filter.h
new file mode 100644
index 0000000000..51b63479de
--- /dev/null
+++ b/camel/camel-mime-filter.h
@@ -0,0 +1,84 @@
+/*
+ *  Copyright (C) 2000 Helix Code Inc.
+ *
+ *  Authors: Michael Zucchi <notzed@helixcode.com>
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Library General Public License
+ *  as published by the Free Software Foundation; either version 2 of
+ *  the License, or (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Library General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Library General Public
+ *  License along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/* Abstract class for non-copying filters */
+
+#ifndef _CAMEL_MIME_FILTER_H
+#define _CAMEL_MIME_FILTER_H
+
+#include <gtk/gtk.h>
+#include <sys/types.h>
+
+#define CAMEL_MIME_FILTER(obj)         GTK_CHECK_CAST (obj, camel_mime_filter_get_type (), CamelMimeFilter)
+#define CAMEL_MIME_FILTER_CLASS(klass) GTK_CHECK_CLASS_CAST (klass, camel_mime_filter_get_type (), CamelMimeFilterClass)
+#define IS_CAMEL_MIME_FILTER(obj)      GTK_CHECK_TYPE (obj, camel_mime_filter_get_type ())
+
+typedef struct _CamelMimeFilter      CamelMimeFilter;
+typedef struct _CamelMimeFilterClass CamelMimeFilterClass;
+
+struct _CamelMimeFilter {
+	GtkObject parent;
+
+	struct _CamelMimeFilterPrivate *priv;
+
+	char *outreal;		/* real malloc'd buffer */
+	char *outbuf;		/* first 'writable' position allowed (outreal + outpre) */
+	char *outptr;
+	int outsize;
+	int outpre;		/* prespace of this buffer */
+
+	char *backbuf;
+	int backsize;
+	int backlen;		/* significant data there */
+};
+
+struct _CamelMimeFilterClass {
+	GtkObjectClass parent_class;
+
+	/* virtual functions */
+	void (*filter)(CamelMimeFilter *f,
+		       char *in, size_t len, size_t prespace,
+		       char **out, size_t *outlen, size_t *outprespace);
+	void (*complete)(CamelMimeFilter *f,
+			 char *in, size_t len, size_t prespace,
+			 char **out, size_t *outlen, size_t *outprespace);
+	void (*reset)(CamelMimeFilter *f);
+};
+
+guint		camel_mime_filter_get_type	(void);
+CamelMimeFilter      *camel_mime_filter_new	(void);
+
+void camel_mime_filter_filter(CamelMimeFilter *f,
+			      char *in, size_t len, size_t prespace,
+			      char **out, size_t *outlen, size_t *outprespace);
+
+void camel_mime_filter_complete(CamelMimeFilter *f,
+				char *in, size_t len, size_t prespace,
+				char **out, size_t *outlen, size_t *outprespace);
+
+void camel_mime_filter_reset(CamelMimeFilter *f);
+
+/* sets/returns number of bytes backed up on the input */
+void camel_mime_filter_backup(CamelMimeFilter *f, char *data, size_t length);
+
+/* ensure this much size available for filter output */
+void camel_mime_filter_set_size(CamelMimeFilter *f, size_t size, int keep);
+
+#endif /* ! _CAMEL_MIME_FILTER_H */