SylFilter

/* SylFilter - a message filter

 *

 * Copyright (C) 2011 Hiroyuki Yamamoto

 * Copyright (C) 2011 Sylpheed Development Team

 */

#include <glib.h>

#include "filter.h"

#include "filter-manager.h"

#include "filter-private.h"

XFilterManager *xfilter_manager_new(void)

{

        XFilterManager *mgr;

        mgr = g_new0(XFilterManager, 1);

        return mgr;

}

void xfilter_manager_free(XFilterManager *mgr)

{

        XFilter *list;

        XFilter *next;

        if (!mgr)

                return;

        for (list = mgr->filter_list; list != NULL; list = next) {

                next = list->next;

                xfilter_free(list);

        }

        g_free(mgr->original_encoding);

        g_free(mgr);

}

void xfilter_manager_filter_add(XFilterManager *mgr, XFilter *filter)

{

        XFilter *list;

        g_return_if_fail(mgr != NULL);

        g_return_if_fail(filter != NULL);

        list = mgr->filter_list;

        if (list) {

                while (list->next) {

                        list = list->next;

                }

                list->next = filter;

        } else {

                mgr->filter_list = filter;

        }

        filter->manager = mgr;

}

void xfilter_manager_filter_remove(XFilterManager *mgr, XFilter *filter)

{

        XFilter *list;

        XFilter *prev = NULL;

        g_return_if_fail(mgr != NULL);

        g_return_if_fail(filter != NULL);

        for (list = mgr->filter_list; list != NULL; list = list->next) {

                if (list == filter) {

                        if (prev)

                                prev->next = list->next;

                        list->next = NULL;

                        filter->manager = NULL;

                        break;

                }

                prev = list;

        }

}

int xfilter_manager_add_filters(XFilterManager *mgr, XFilterConstructorFunc ctors[])

{

        XFilter *filter;

        int i;

        for (i = 0; ctors[i] != NULL; i++) {

                filter = ctors[i]();

                if (!filter)

                        return -1;

                xfilter_manager_filter_add(mgr, filter);

        }

        return 0;

}

void xfilter_manager_done(XFilterManager *mgr)

{

        g_return_if_fail(mgr != NULL);

        g_free(mgr->original_encoding);

        mgr->original_encoding = NULL;

}

XFilterResult *xfilter_manager_run(XFilterManager *mgr, XMessageData *msgdata)

{

        XFilter *list;

        const XMessageData *curdata;

        XFilterResult *res;

        XFilterStatus status;

        g_return_val_if_fail(mgr != NULL, NULL);

        xfilter_debug_print("%s: %s: run filter chain\n", __FILE__, G_STRFUNC);

        res = xfilter_result_new();

        curdata = msgdata;

        for (list = mgr->filter_list; list != NULL; list = list->next) {

                xfilter_debug_print("exec filter: %s [%s] in data type: %s\n", xfilter_get_name(list), xfilter_get_type(list) == XF_CONTENT ? "content filter" : "test filter", xfilter_message_data_get_mime_type(curdata));

                status = xfilter_exec(list, curdata, res);

                if (res->msgdata)

                        curdata = res->msgdata;

                xfilter_debug_print("exec filter: %s: status %d: out data type: %s\n", xfilter_get_name(list), status, xfilter_message_data_get_mime_type(curdata));

                if (status == XF_JUNK) {

                        xfilter_debug_print("filter returned XF_JUNK, end filter chain\n");

                        break;

                }

                if (status == XF_UNSUPPORTED_TYPE || status == XF_ERROR) {

                        xfilter_debug_print("filter returned error, end filter chain\n");

                        break;

                }

        }

        xfilter_manager_done(mgr);

        return res;

}