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-rw-r--r--camel/Makefile.am2
-rw-r--r--camel/camel-stream-fs.c27
-rw-r--r--camel/camel-stream-mem.c235
-rw-r--r--camel/camel-stream-mem.h80
-rw-r--r--camel/camel-stream.c27
-rw-r--r--camel/camel-stream.h9
6 files changed, 378 insertions, 2 deletions
diff --git a/camel/Makefile.am b/camel/Makefile.am
index 573f256d48..fc3f155726 100644
--- a/camel/Makefile.am
+++ b/camel/Makefile.am
@@ -27,6 +27,7 @@ libcamel_la_SOURCES = \
camel-store.c \
camel-stream.c \
camel-stream-fs.c \
+ camel-stream-mem.c \
data-wrapper-repository.c \
gmime-content-field.c \
gmime-utils.c \
@@ -50,6 +51,7 @@ libcamelinclude_HEADERS = \
camel-store.h \
camel-stream.h \
camel-stream-fs.h \
+ camel-stream-mem.h \
data-wrapper-repository.h \
gmime-content-field.h \
gmime-utils.h \
diff --git a/camel/camel-stream-fs.c b/camel/camel-stream-fs.c
index 3216f6ffdf..0e006a28f3 100644
--- a/camel/camel-stream-fs.c
+++ b/camel/camel-stream-fs.c
@@ -41,10 +41,11 @@ static void _flush (CamelStream *stream);
static gint _available (CamelStream *stream);
static gboolean _eos (CamelStream *stream);
static void _close (CamelStream *stream);
+static gint _seek (CamelStream *stream, gint offset, CamelStreamSeekPolicy policy);
static void
-camel_stream_fs_class_init (CamelStreamClass *camel_stream_fs_class)
+camel_stream_fs_class_init (CamelStreamFsClass *camel_stream_fs_class)
{
CamelStreamClass *camel_stream_class = CAMEL_STREAM_CLASS (camel_stream_fs_class);
parent_class = gtk_type_class (gtk_object_get_type ());
@@ -58,6 +59,7 @@ camel_stream_fs_class_init (CamelStreamClass *camel_stream_fs_class)
camel_stream_class->available = _available;
camel_stream_class->eos = _eos;
camel_stream_class->close = _close;
+ camel_stream_class->seek = _seek;
}
@@ -249,3 +251,26 @@ _close (CamelStream *stream)
{
close ((CAMEL_STREAM_FS (stream))->fd);
}
+
+
+static gint
+_seek (CamelStream *stream, gint offset, CamelStreamSeekPolicy policy)
+{
+ int whence;
+ switch (policy) {
+ case CAMEL_STREAM_SET:
+ whence = SEEK_SET;
+ break;
+ case CAMEL_STREAM_CUR:
+ whence = SEEK_CUR;
+ break;
+ case CAMEL_STREAM_END:
+ whence = SEEK_END;
+ break;
+ default:
+ return -1;
+ }
+
+
+ return lseek ((CAMEL_STREAM_FS (stream))->fd, offset, whence);
+}
diff --git a/camel/camel-stream-mem.c b/camel/camel-stream-mem.c
new file mode 100644
index 0000000000..14eb9ec625
--- /dev/null
+++ b/camel/camel-stream-mem.c
@@ -0,0 +1,235 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-ofmemet: 8 -*- */
+/* camel-stream-mem.c : memory buffer based stream */
+
+/* inspired by gnome-stream-mem.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 <config.h>
+#include "camel-stream-mem.h"
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+#include "camel-log.h"
+
+static CamelStreamClass *parent_class=NULL;
+
+
+/* Returns the class for a CamelStreamMEM */
+#define CS_CLASS(so) CAMEL_STREAM_MEM_CLASS (GTK_OBJECT(so)->klass)
+
+static gint _read (CamelStream *stream, gchar *buffer, gint n);
+static gint _write (CamelStream *stream, const 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 gint _seek (CamelStream *stream, gint offset, CamelStreamSeekPolicy policy);
+
+
+static void
+camel_stream_mem_class_init (CamelStreamMemClass *camel_stream_mem_class)
+{
+ CamelStreamClass *camel_stream_class = CAMEL_STREAM_CLASS (camel_stream_mem_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;
+ camel_stream_class->seek = _seek;
+
+}
+
+static void
+camel_stream_mem_init (gpointer object, gpointer klass)
+{
+ CamelStreamMem *camel_stream_mem = CAMEL_STREAM_MEM (object);
+ camel_stream_mem->buffer = g_byte_array_new ();
+ camel_stream_mem->position = 0;
+}
+
+GtkType
+camel_stream_mem_get_type (void)
+{
+ static GtkType camel_stream_mem_type = 0;
+
+ if (!camel_stream_mem_type) {
+ GtkTypeInfo camel_stream_mem_info =
+ {
+ "CamelStreamMem",
+ sizeof (CamelStreamMem),
+ sizeof (CamelStreamMemClass),
+ (GtkClassInitFunc) camel_stream_mem_class_init,
+ (GtkObjectInitFunc) camel_stream_mem_init,
+ /* reserved_1 */ NULL,
+ /* reserved_2 */ NULL,
+ (GtkClassInitFunc) NULL,
+ };
+
+ camel_stream_mem_type = gtk_type_unique (camel_stream_get_type (), &camel_stream_mem_info);
+ }
+
+ return camel_stream_mem_type;
+}
+
+
+
+
+/**
+ * _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)
+{
+ CamelStreamMem *camel_stream_mem = CAMEL_STREAM_MEM (stream);
+ gint nb_bytes_to_read;
+
+ g_assert (stream);
+ nb_bytes_to_read = MIN (n, (camel_stream_mem->buffer)->len - camel_stream_mem->position);
+ if (nb_bytes_to_read) {
+ memcpy (buffer, (camel_stream_mem->buffer)->data + camel_stream_mem->position, nb_bytes_to_read);
+ camel_stream_mem->position += nb_bytes_to_read;
+ }
+ return nb_bytes_to_read;
+}
+
+
+/**
+ * _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, const gchar *buffer, gint n)
+{
+ CamelStreamMem *camel_stream_mem = CAMEL_STREAM_MEM (stream);
+
+ g_assert (stream);
+ camel_stream_mem->buffer = g_byte_array_append (camel_stream_mem->buffer, (const guint8 *)buffer, n);
+ camel_stream_mem->position += n;
+
+}
+
+
+
+/**
+ * _flush: flush pending changes
+ * @stream: the stream
+ *
+ *
+ **/
+static void
+_flush (CamelStream *stream)
+{
+ g_warning ("Not implemented yet");
+}
+
+
+
+/**
+ * _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)
+{
+ g_warning ("Not implemented yet");
+}
+
+
+
+static gint
+_seek (CamelStream *stream, gint offset, CamelStreamSeekPolicy policy)
+{
+ gint position;
+ CamelStreamMem *camel_stream_mem = CAMEL_STREAM_MEM (stream);
+
+ switch (policy) {
+ case CAMEL_STREAM_SET:
+ position = offset;
+ break;
+ case CAMEL_STREAM_CUR:
+ position = camel_stream_mem->position + offset;
+ break;
+ case CAMEL_STREAM_END:
+ position = (camel_stream_mem->buffer)->len + offset;
+ break;
+ default:
+ return -1;
+ }
+
+ position = MIN (position, (camel_stream_mem->buffer)->len);
+ position = MAX (position, 0);
+
+ camel_stream_mem->position = position;
+
+ return position;
+}
diff --git a/camel/camel-stream-mem.h b/camel/camel-stream-mem.h
new file mode 100644
index 0000000000..1864512868
--- /dev/null
+++ b/camel/camel-stream-mem.h
@@ -0,0 +1,80 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+/* camel-stream-mem.h :stream based on memory buffer */
+
+/*
+ *
+ * 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
+ */
+
+
+#ifndef CAMEL_STREAM_MEM_H
+#define CAMEL_STREAM_MEM_H 1
+
+
+#ifdef __cplusplus
+extern "C" {
+#pragma }
+#endif /* __cplusplus }*/
+
+#include <gtk/gtk.h>
+#include <stdio.h>
+#include "camel-stream.h"
+
+#define CAMEL_STREAM_MEM_TYPE (camel_stream_mem_get_type ())
+#define CAMEL_STREAM_MEM(obj) (GTK_CHECK_CAST((obj), CAMEL_STREAM_MEM_TYPE, CamelStreamMem))
+#define CAMEL_STREAM_MEM_CLASS(k) (GTK_CHECK_CLASS_CAST ((k), CAMEL_STREAM_MEM_TYPE, CamelStreamMemClass))
+#define IS_CAMEL_STREAM_MEM(o) (GTK_CHECK_TYPE((o), CAMEL_STREAM_MEM_TYPE))
+
+typedef enum
+{
+ CAMEL_STREAM_MEM_READ = 1,
+ CAMEL_STREAM_MEM_WRITE = 2
+} CamelStreamMemMode;
+
+
+typedef struct
+{
+ CamelStream parent_object;
+
+ GByteArray *buffer;
+ gint position;
+ CamelStreamMemMode mode;
+} CamelStreamMem;
+
+
+
+typedef struct {
+ CamelStreamClass parent_class;
+
+ /* Virtual methods */
+
+} CamelStreamMemClass;
+
+
+
+/* Standard Gtk function */
+GtkType camel_stream_mem_get_type (void);
+
+
+/* public methods */
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* CAMEL_STREAM_MEM_H */
diff --git a/camel/camel-stream.c b/camel/camel-stream.c
index c66a950b26..b63a64ddb7 100644
--- a/camel/camel-stream.c
+++ b/camel/camel-stream.c
@@ -42,6 +42,12 @@ default_camel_close (CamelStream *stream)
/* nothing */
}
+static gint
+default_camel_seek (CamelStream *stream, gint offset, CamelStreamSeekPolicy policy)
+{
+ /* nothing */
+}
+
static void
camel_stream_class_init (CamelStreamClass *camel_stream_class)
{
@@ -55,6 +61,7 @@ camel_stream_class_init (CamelStreamClass *camel_stream_class)
camel_stream_class->available = NULL;
camel_stream_class->eos = NULL;
camel_stream_class->close = default_camel_close;
+ camel_stream_class->seek = default_camel_seek;
/* virtual method overload */
}
@@ -169,6 +176,26 @@ camel_stream_close (CamelStream *stream)
CS_CLASS (stream)->close (stream);
}
+
+/**
+ * camel_stream_seek:
+ * @stream: a CamelStream object.
+ * @offset: offset value
+ * @policy: what to do with the offset
+ *
+ *
+ *
+ * Return value: new position, -1 if operation failed.
+ **/
+gint
+camel_stream_seek (CamelStream *stream, gint offset, CamelStreamSeekPolicy policy)
+{
+ return CS_CLASS (stream)->seek (stream, offset, policy);
+}
+
+
+
+
/***************** Utility functions ********************/
/**
diff --git a/camel/camel-stream.h b/camel/camel-stream.h
index 9818e492fb..4b4ea50b5b 100644
--- a/camel/camel-stream.h
+++ b/camel/camel-stream.h
@@ -38,7 +38,12 @@ extern "C" {
#define CAMEL_STREAM_CLASS(k) (GTK_CHECK_CLASS_CAST ((k), CAMEL_STREAM_TYPE, CamelStreamClass))
#define IS_CAMEL_STREAM(o) (GTK_CHECK_TYPE((o), CAMEL_STREAM_TYPE))
-
+typedef enum
+{
+ CAMEL_STREAM_SET,
+ CAMEL_STREAM_CUR,
+ CAMEL_STREAM_END
+} CamelStreamSeekPolicy;
typedef struct
{
@@ -58,6 +63,7 @@ typedef struct {
gint (*available) (CamelStream *stream);
gboolean (*eos) (CamelStream *stream);
void (*close) (CamelStream *stream);
+ gint (*seek) (CamelStream *stream, gint offset, CamelStreamSeekPolicy policy);
} CamelStreamClass;
@@ -73,6 +79,7 @@ void camel_stream_flush (CamelStream *stream);
gint camel_stream_available (CamelStream *stream);
gboolean camel_stream_eos (CamelStream *stream);
void camel_stream_close (CamelStream *stream);
+gint camel_stream_seek (CamelStream *stream, gint offset, CamelStreamSeekPolicy policy);
/* utility macros and funcs */
#define camel_stream_write_string(stream, string) camel_stream_write ((stream), (string), strlen (string))
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-07 06:19:08 +0800