use new stream code instead of raw file * stuff.

1999-05-31  bertrand  <Bertrand.Guiheneuf@inria.fr>

	* tests/test2.c (main):
	use new stream code instead of raw file * stuff.

	* camel/gmime-utils.c (get_header_table_from_stream):
	new func. Will replace get_header_table_from_file and will
	be used to parse headers from files as well as from
	memory buffers.

	* camel/camel-stream-fs.c:
	CamelStream Subclass. File system based
	stream.

svn path=/trunk/; revision=961

1 files changed, 234 insertions, 0 deletions

diff --git a/camel/camel-stream-fs.c b/camel/camel-stream-fs.c
new file mode 100644
index 0000000000..0a42e5062f
--- /dev/null
+++ b/camel/camel-stream-fs.c
@@ -0,0 +1,234 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+/* camel-stream-fs.c : file system based stream */
+
+/* inspired by gnome-stream-fs.c in bonobo by Miguel de Icaza */
+/* 
+ *
+ * Copyright (C) 1999 Bertrand Guiheneuf <Bertrand.Guiheneuf@inria.fr> .
+ *
+ * This program is free software; you can redistribute it and/or 
+ * modify it under the terms of the GNU 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ * USA
+ */
+
+#include "camel-stream-fs.h"
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+
+static CamelStreamClass *parent_class=NULL;
+
+
+/* Returns the class for a CamelMimeMessage */
+#define CS_CLASS(so) CAMEL_STREAM_FS_CLASS (GTK_OBJECT(so)->klass)
+
+static gint _read (CamelStream *stream, gchar *buffer, gint n);
+static gint _write (CamelStream *stream, gchar *buffer, gint n);
+static void _flush (CamelStream *stream);
+static gint _available (CamelStream *stream);
+static gboolean _eos (CamelStream *stream);
+static void _close (CamelStream *stream);
+
+
+static void
+camel_stream_fs_class_init (CamelStreamClass *camel_stream_fs_class)
+{
+	CamelStreamClass *camel_stream_class = CAMEL_STREAM_CLASS (camel_stream_fs_class);
+	parent_class = gtk_type_class (gtk_object_get_type ());
+	
+	/* virtual method definition */
+
+	/* virtual method overload */
+	camel_stream_class->read = _read;
+	camel_stream_class->write = _write;
+	camel_stream_class->flush = _flush;
+	camel_stream_class->available = _available;
+	camel_stream_class->eos = _eos;
+	camel_stream_class->close = _close;
+
+}
+
+
+
+GtkType
+camel_stream_fs_get_type (void)
+{
+	static GtkType camel_stream_fs_type = 0;
+	
+	if (!camel_stream_fs_type)	{
+		GtkTypeInfo camel_stream_fs_info =	
+		{
+			"CamelStreamFs",
+			sizeof (CamelStreamFs),
+			sizeof (CamelStreamFsClass),
+			(GtkClassInitFunc) camel_stream_fs_class_init,
+			(GtkObjectInitFunc) NULL,
+				/* reserved_1 */ NULL,
+				/* reserved_2 */ NULL,
+			(GtkClassInitFunc) NULL,
+		};
+		
+		camel_stream_fs_type = gtk_type_unique (camel_stream_get_type (), &camel_stream_fs_info);
+	}
+	
+	return camel_stream_fs_type;
+}
+
+
+CamelStream *
+camel_stream_fs_new_with_name (GString *name, CamelStreamFsMode mode)
+{
+	struct stat s;
+	int v, fd;
+	int flags;
+	CamelStreamFs *stream_fs;
+
+	if (!name) return NULL;
+
+	v = stat (name->str, &s);
+
+	if (mode & CAMEL_STREAM_FS_READ)
+		if (mode & CAMEL_STREAM_FS_WRITE) flags = O_RDWR;
+		else flags = O_RDONLY;
+	else 
+		if (mode & CAMEL_STREAM_FS_WRITE) flags = O_WRONLY;
+		else return NULL;
+
+	if (mode & CAMEL_STREAM_FS_READ)
+		if (v == -1) return NULL;
+
+	fd = open (name->str, flags);
+	
+	stream_fs = CAMEL_STREAM_FS (camel_stream_fs_new_with_fd (fd));
+	stream_fs->name = name;
+
+	return CAMEL_STREAM (stream_fs);
+	
+}
+
+CamelStream *
+camel_stream_fs_new_with_fd (int fd)
+{
+	CamelStreamFs *stream_fs;
+	
+	stream_fs = gtk_type_new (camel_stream_fs_get_type ());
+	stream_fs->fd = fd;
+	return CAMEL_STREAM (stream_fs);
+}
+
+/**
+ * _read: read bytes from a stream
+ * @stream: stream
+ * @buffer: buffer where bytes are stored
+ * @n: max number of bytes to read
+ * 
+ * 
+ * 
+ * Return value: number of bytes actually read.
+ **/
+static gint
+_read (CamelStream *stream, gchar *buffer, gint n)
+{
+	int v;
+	
+	do {
+		v = read ( (CAMEL_STREAM_FS (stream))->fd, buffer, n);
+	} while (v == -1 && errno == EINTR);
+	
+	return v;
+}
+
+
+/**
+ * _write: read bytes to a stream
+ * @stream: the stream
+ * @buffer: byte buffer
+ * @n: number of bytes to write
+ * 
+ * 
+ * 
+ * Return value: the number of bytes actually written
+ *  in the stream.
+ **/
+static gint
+_write (CamelStream *stream, gchar *buffer, gint n)
+{
+	int v;
+	
+	do {
+		v = write ( (CAMEL_STREAM_FS (stream))->fd, buffer, n);
+	} while (v == -1 && errno == EINTR);
+	
+	return v;
+
+}
+
+
+
+/**
+ * _flush: flush pending changes 
+ * @stream: the stream
+ * 
+ * 
+ **/
+static void
+_flush (CamelStream *stream)
+{
+	fsync ((CAMEL_STREAM_FS (stream))->fd);
+}
+
+
+
+/**
+ * _available: return the number of bytes available for reading
+ * @stream: the stream
+ * 
+ * Return the number of bytes available without blocking.
+ * 
+ * Return value: the number of bytes available
+ **/
+static gint 
+_available (CamelStream *stream)
+{
+	g_warning ("Not implemented yet");
+}
+
+
+/**
+ * _eos: test if there are bytes left to read
+ * @stream: the stream
+ * 
+ * 
+ * 
+ * Return value: true if all stream has been read
+ **/
+static gboolean
+_eos (CamelStream *stream)
+{
+	g_warning ("Not implemented yet");
+}
+
+
+/**
+ * _close: close a stream
+ * @stream: the stream
+ * 
+ * 
+ **/
+static void
+_close (CamelStream *stream)
+{
+	close ((CAMEL_STREAM_FS (stream))->fd);
+}