weston/libweston/weston-log-file.c

101 lines
2.8 KiB
C

/*
* Copyright © 2019 Collabora Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial
* portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "config.h"
#include <libweston/weston-log.h>
#include "shared/helpers.h"
#include <libweston/libweston.h>
#include "weston-log-internal.h"
#include <stdio.h>
/** File type of stream
*/
struct weston_debug_log_file {
struct weston_log_subscriber base;
FILE *file;
};
static struct weston_debug_log_file *
to_weston_debug_log_file(struct weston_log_subscriber *sub)
{
return container_of(sub, struct weston_debug_log_file, base);
}
static void
weston_log_file_write(struct weston_log_subscriber *sub,
const char *data, size_t len)
{
struct weston_debug_log_file *stream = to_weston_debug_log_file(sub);
fwrite(data, len, 1, stream->file);
}
/** Creates a file type of subscriber
*
* Should be destroyed using weston_log_subscriber_destroy_log()
*
* @param dump_to if specified, used for writing data to
* @returns a weston_log_subscriber object or NULL in case of failure
*
* @sa weston_log_subscriber_destroy_log
*
*/
WL_EXPORT struct weston_log_subscriber *
weston_log_subscriber_create_log(FILE *dump_to)
{
struct weston_debug_log_file *file = zalloc(sizeof(*file));
if (!file)
return NULL;
if (dump_to)
file->file = dump_to;
else
file->file = stderr;
file->base.write = weston_log_file_write;
file->base.destroy = NULL;
file->base.complete = NULL;
wl_list_init(&file->base.subscription_list);
return &file->base;
}
/** Destroy the subscriber created with weston_log_subscriber_create_log
*
* @param subscriber the weston_log_subscriber object to destroy
*
*/
WL_EXPORT void
weston_log_subscriber_destroy_log(struct weston_log_subscriber *subscriber)
{
struct weston_debug_log_file *file = to_weston_debug_log_file(subscriber);
free(file);
}