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-rw-r--r--mail/em-camel-stream.c326
1 files changed, 0 insertions, 326 deletions
diff --git a/mail/em-camel-stream.c b/mail/em-camel-stream.c
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--- a/mail/em-camel-stream.c
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-/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
-/*
- * Authors: Jeffrey Stedfast <fejj@ximian.com>
- * Michael Zucchi <notzed@ximian.com>
- *
- * Copyright 2001 Ximian, Inc. (www.ximian.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * 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.
- *
- */
-
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-#include <string.h>
-#include <stdio.h>
-#include <camel/camel-stream.h>
-#include <camel/camel-object.h>
-#include <gtkhtml/gtkhtml.h>
-#include <gtkhtml/gtkhtml-stream.h>
-#include <gtk/gtkmain.h>
-#include "em-camel-stream.h"
-
-#include "mail-mt.h"
-
-#define EMCS_BUFFER_SIZE (4096)
-
-/*#define LOG_STREAM*/
-
-#define d(x)
-
-enum _write_msg_t {
- EMCS_WRITE,
- EMCS_FLUSH,
- EMCS_CLOSE_OK,
- EMCS_CLOSE_ERROR,
-};
-
-struct _write_msg {
- EMsg msg;
-
- enum _write_msg_t op;
-
- const char *data;
- size_t n;
-};
-
-static void em_camel_stream_class_init (EMCamelStreamClass *klass);
-static void em_camel_stream_init (CamelObject *object);
-static void em_camel_stream_finalize (CamelObject *object);
-
-static ssize_t stream_write(CamelStream *stream, const char *buffer, size_t n);
-static int stream_close(CamelStream *stream);
-static int stream_flush(CamelStream *stream);
-
-static CamelStreamClass *parent_class = NULL;
-
-CamelType
-em_camel_stream_get_type (void)
-{
- static CamelType type = CAMEL_INVALID_TYPE;
-
- if (type == CAMEL_INVALID_TYPE) {
- type = camel_type_register (CAMEL_STREAM_TYPE,
- "EMCamelStream",
- sizeof (EMCamelStream),
- sizeof (EMCamelStreamClass),
- (CamelObjectClassInitFunc) em_camel_stream_class_init,
- NULL,
- (CamelObjectInitFunc) em_camel_stream_init,
- (CamelObjectFinalizeFunc) em_camel_stream_finalize);
- }
-
- return type;
-}
-
-static void
-em_camel_stream_class_init (EMCamelStreamClass *klass)
-{
- CamelStreamClass *stream_class = CAMEL_STREAM_CLASS (klass);
-
- parent_class = (CamelStreamClass *) CAMEL_STREAM_TYPE;
-
- /* virtual method overload */
- stream_class->write = stream_write;
- stream_class->flush = stream_flush;
- stream_class->close = stream_close;
-}
-
-static gboolean
-emcs_gui_received(GIOChannel *source, GIOCondition cond, void *data)
-{
- EMCamelStream *estream = data;
- struct _write_msg *msg;
-
- d(printf("%p: gui sync op job waiting\n", estream));
-
- msg = (struct _write_msg *)e_msgport_get(estream->data_port);
- /* Should never happen ... */
- if (msg == NULL)
- return TRUE;
-
- d(printf("%p: running sync op %d\n", estream, msg->op));
-
- /* force out any pending data before doing anything else */
- if (estream->used > 0) {
- d(printf("sync write %d\n", estream->used));
-
- if (estream->html_stream)
- gtk_html_stream_write(estream->html_stream, estream->buffer, estream->used);
- estream->used = 0;
- }
-
- switch (msg->op) {
- case EMCS_WRITE:
- d(printf("sync write %d\n", msg->n));
- if (estream->html_stream)
- gtk_html_stream_write(estream->html_stream, msg->data, msg->n);
- break;
- case EMCS_FLUSH:
- stream_flush((CamelStream *)estream);
- break;
- case EMCS_CLOSE_OK:
- if (estream->html_stream) {
- gtk_html_stream_close(estream->html_stream, GTK_HTML_STREAM_OK);
- estream->html_stream = NULL;
- }
- break;
- case EMCS_CLOSE_ERROR:
- if (estream->html_stream) {
- gtk_html_stream_close(estream->html_stream, GTK_HTML_STREAM_ERROR);
- estream->html_stream = NULL;
- }
- break;
- }
-
- e_msgport_reply((EMsg *)msg);
- d(printf("%p: gui sync op jobs done\n", estream));
-
- return TRUE;
-}
-
-static void
-em_camel_stream_init (CamelObject *object)
-{
- EMCamelStream *estream = (EMCamelStream *)object;
-
- estream->data_port = e_msgport_new();
- estream->reply_port = e_msgport_new();
-
- estream->gui_channel = g_io_channel_unix_new(e_msgport_fd(estream->data_port));
- estream->gui_watch = g_io_add_watch(estream->gui_channel, G_IO_IN, emcs_gui_received, estream);
-
- estream->used = 0;
- estream->buffer = g_malloc(EMCS_BUFFER_SIZE);
-
- d(printf("%p: new estream\n", estream));
-}
-
-static void
-sync_op(EMCamelStream *estream, enum _write_msg_t op, const char *data, size_t n)
-{
- struct _write_msg msg;
-
- d(printf("%p: launching sync op %d\n", estream, op));
- /* we do everything synchronous, we should never have any locks, and
- this prevents overflow from banked up data */
- msg.msg.reply_port = estream->reply_port;
- msg.op = op;
- msg.data = data;
- msg.n = n;
- e_msgport_put(estream->data_port, &msg.msg);
- e_msgport_wait(estream->reply_port);
- g_assert(e_msgport_get(msg.msg.reply_port) == &msg.msg);
- d(printf("%p: returned sync op %d\n", estream, op));
-}
-
-static void
-em_camel_stream_finalize (CamelObject *object)
-{
- EMCamelStream *estream = (EMCamelStream *)object;
-
- d(printf("%p: finalising stream\n", object));
- if (estream->html_stream) {
- d(printf("%p: html stream still open - error\n", object));
- if (pthread_self() == mail_gui_thread)
- gtk_html_stream_close(estream->html_stream, GTK_HTML_STREAM_ERROR);
- else
- sync_op(estream, EMCS_CLOSE_ERROR, NULL, 0);
- }
-
- /* TODO: is this stuff safe to do in another thread? */
- g_source_remove(estream->gui_watch);
- g_io_channel_unref(estream->gui_channel);
- e_msgport_destroy(estream->data_port);
- estream->data_port = NULL;
- e_msgport_destroy(estream->reply_port);
- estream->reply_port = NULL;
- g_free(estream->buffer);
-}
-
-static ssize_t
-stream_write (CamelStream *stream, const char *buffer, size_t n)
-{
- EMCamelStream *estream = EM_CAMEL_STREAM (stream);
-
- if (estream->html_stream == NULL)
- return -1;
-
-#ifdef LOG_STREAM
- if (estream->save)
- fwrite(buffer, sizeof(char), n, estream->save);
-#endif
-
- if (pthread_self() == mail_gui_thread)
- gtk_html_stream_write(estream->html_stream, buffer, n);
- else {
-#if 1
- size_t left = EMCS_BUFFER_SIZE-estream->used;
-
- /* A super-simple buffer, if we get too much to fit, just do a sync
- write, which will implicitly clear our previous writes first */
- d(printf("thread write '%d'\n", n));
-
- if (n >= left) {
- sync_op(estream, EMCS_WRITE, buffer, n);
- } else {
- memcpy(estream->buffer + estream->used, buffer, n);
- estream->used += n;
- }
-#else
- sync_op(estream, EMCS_WRITE, buffer, n);
-#endif
- }
- return (ssize_t) n;
-}
-
-static int
-stream_flush(CamelStream *stream)
-{
- EMCamelStream *estream = (EMCamelStream *)stream;
-
- if (estream->html_stream) {
- if (pthread_self() == mail_gui_thread) {
- /* FIXME: flush html stream via gtkhtml_stream_flush which doens't exist yet ... */
- while (gtk_events_pending ())
- gtk_main_iteration ();
- } else {
- sync_op(estream, EMCS_FLUSH, NULL, 0);
- }
- }
-
- return 0;
-}
-
-static int
-stream_close(CamelStream *stream)
-{
- EMCamelStream *estream = (EMCamelStream *)stream;
-
- d(printf("%p: closing stream\n", stream));
-
-#ifdef LOG_STREAM
- if (estream->save) {
- fclose(estream->save);
- estream->save = NULL;
- }
-#endif
-
- if (estream->html_stream) {
- if (pthread_self() == mail_gui_thread) {
- gtk_html_stream_close(estream->html_stream, GTK_HTML_STREAM_OK);
- estream->html_stream = NULL;
- } else {
- sync_op(estream, EMCS_CLOSE_OK, NULL, 0);
- }
- }
-
- return 0;
-}
-
-static void
-emcs_gtkhtml_destroy(struct _GtkHTML *html, EMCamelStream *emcs)
-{
- d(printf("%p: emcs gtkhtml destroy\n", emcs));
- emcs->html = NULL;
- emcs->html_stream = NULL;
-}
-
-/* TODO: Could pass NULL for html_stream, and do a gtk_html_begin
- on first data -> less flashing */
-CamelStream *
-em_camel_stream_new(struct _GtkHTML *html, struct _GtkHTMLStream *html_stream)
-{
- EMCamelStream *new;
-
- new = EM_CAMEL_STREAM (camel_object_new (EM_CAMEL_STREAM_TYPE));
- new->html_stream = html_stream;
- g_signal_connect(html, "destroy", G_CALLBACK(emcs_gtkhtml_destroy), new);
-
-#ifdef LOG_STREAM
- {
- static int count;
- char name[32];
-
- sprintf(name, "camel-stream.%d.html", count++);
- printf("saving raw html to '%s'\n", name);
- new->save = fopen(name, "w");
- }
-#endif
- return CAMEL_STREAM (new);
-}