1 /*****************************************************************************
2 * logger.c : file logging plugin for vlc
3 *****************************************************************************
4 * Copyright (C) 2002 VideoLAN
5 * $Id: logger.c,v 1.8 2003/05/15 22:27:37 massiot Exp $
7 * Authors: Samuel Hocevar <sam@zoy.org>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
27 #include <stdlib.h> /* malloc(), free() */
30 #include <errno.h> /* ENOMEM */
39 #define LOG_FILE "vlc-log.txt"
40 #define LOG_STRING( msg, file ) fwrite( msg, strlen( msg ), 1, file );
42 #define TEXT_HEADER "-- logger module started --\n"
43 #define TEXT_FOOTER "-- logger module stopped --\n"
48 " <title>vlc log</title>\n" \
50 " <body bgcolor=\"#000000\" text=\"#aaaaaa\">\n" \
52 " <b>-- logger module started --</b>\n"
54 " <b>-- logger module stopped --</b>\n" \
59 /*****************************************************************************
60 * intf_sys_t: description and status of log interface
61 *****************************************************************************/
66 FILE * p_file; /* The log file */
67 msg_subscription_t *p_sub;
70 /*****************************************************************************
72 *****************************************************************************/
73 static int Open ( vlc_object_t * );
74 static void Close ( vlc_object_t * );
75 static void Run ( intf_thread_t * );
77 static void FlushQueue ( msg_subscription_t *, FILE *, int );
78 static void TextPrint ( const msg_item_t *, FILE * );
79 static void HtmlPrint ( const msg_item_t *, FILE * );
81 /*****************************************************************************
83 *****************************************************************************/
84 static char *mode_list[] = { "text", "html", NULL };
85 #define LOGMODE_TEXT N_("Log format")
86 #define LOGMODE_LONGTEXT N_("Specify the log format. Available choices are \"text\" (default) and \"html\"")
89 add_category_hint( N_("Miscellaneous"), NULL, VLC_FALSE );
90 add_file( "logfile", NULL, NULL, N_("log filename"), N_("Specify the log filename."), VLC_FALSE );
91 add_string_from_list( "logmode", "text", mode_list, NULL, LOGMODE_TEXT, LOGMODE_LONGTEXT, VLC_FALSE );
92 set_description( _("file logging interface") );
93 set_capability( "interface", 0 );
94 set_callbacks( Open, Close );
97 /*****************************************************************************
98 * Open: initialize and create stuff
99 *****************************************************************************/
100 static int Open( vlc_object_t *p_this )
102 intf_thread_t *p_intf = (intf_thread_t *)p_this;
103 char *psz_mode, *psz_file;
106 msg_Info( p_intf, _("Using the logger interface plugin...") );
108 /* Allocate instance and initialize some members */
109 p_intf->p_sys = (intf_sys_t *)malloc( sizeof( intf_sys_t ) );
110 if( p_intf->p_sys == NULL )
112 msg_Err( p_intf, "out of memory" );
116 psz_mode = config_GetPsz( p_intf, "logmode" );
119 if( !strcmp( psz_mode, "text" ) )
121 p_intf->p_sys->i_mode = MODE_TEXT;
123 else if( !strcmp( psz_mode, "html" ) )
125 p_intf->p_sys->i_mode = MODE_HTML;
129 msg_Err( p_intf, "invalid log mode `%s', using `text'", psz_mode );
130 p_intf->p_sys->i_mode = MODE_TEXT;
137 msg_Warn( p_intf, "no log mode specified, using `text'" );
138 p_intf->p_sys->i_mode = MODE_TEXT;
141 psz_file = config_GetPsz( p_intf, "logfile" );
144 switch( p_intf->p_sys->i_mode )
147 psz_file = strdup( "vlc-log.html" );
151 psz_file = strdup( "vlc-log.txt" );
155 msg_Warn( p_intf, "no log filename provided, using `%s'", psz_file );
158 /* Open the log file and remove any buffering for the stream */
159 msg_Dbg( p_intf, "opening logfile `%s'", psz_file );
160 p_intf->p_sys->p_file = fopen( psz_file, "wt" );
161 if( p_intf->p_sys->p_file == NULL )
163 msg_Err( p_intf, "error opening logfile `%s'", psz_file );
164 free( p_intf->p_sys );
168 setvbuf( p_intf->p_sys->p_file, NULL, _IONBF, 0 );
169 p_intf->p_sys->p_sub = msg_Subscribe( p_intf );
173 switch( p_intf->p_sys->i_mode )
176 LOG_STRING( HTML_HEADER, p_intf->p_sys->p_file );
180 LOG_STRING( TEXT_HEADER, p_intf->p_sys->p_file );
184 p_intf->pf_run = Run;
189 /*****************************************************************************
190 * Close: destroy interface stuff
191 *****************************************************************************/
192 static void Close( vlc_object_t *p_this )
194 intf_thread_t *p_intf = (intf_thread_t *)p_this;
196 /* Flush the queue and unsubscribe from the message queue */
197 FlushQueue( p_intf->p_sys->p_sub, p_intf->p_sys->p_file,
198 p_intf->p_sys->i_mode );
199 msg_Unsubscribe( p_intf, p_intf->p_sys->p_sub );
201 switch( p_intf->p_sys->i_mode )
204 LOG_STRING( HTML_FOOTER, p_intf->p_sys->p_file );
208 LOG_STRING( TEXT_FOOTER, p_intf->p_sys->p_file );
212 /* Close the log file */
213 fclose( p_intf->p_sys->p_file );
215 /* Destroy structure */
216 free( p_intf->p_sys );
219 /*****************************************************************************
221 *****************************************************************************
222 * This part of the interface is in a separate thread so that we can call
223 * exec() from within it without annoying the rest of the program.
224 *****************************************************************************/
225 static void Run( intf_thread_t *p_intf )
227 while( !p_intf->b_die )
229 FlushQueue( p_intf->p_sys->p_sub, p_intf->p_sys->p_file,
230 p_intf->p_sys->i_mode );
232 msleep( INTF_IDLE_SLEEP );
236 /*****************************************************************************
237 * FlushQueue: flush the message queue into the log file
238 *****************************************************************************/
239 static void FlushQueue( msg_subscription_t *p_sub, FILE *p_file, int i_mode )
243 vlc_mutex_lock( p_sub->p_lock );
244 i_stop = *p_sub->pi_stop;
245 vlc_mutex_unlock( p_sub->p_lock );
247 if( p_sub->i_start != i_stop )
249 /* Append all messages to log file */
250 for( i_start = p_sub->i_start;
252 i_start = (i_start+1) % VLC_MSG_QSIZE )
257 HtmlPrint( &p_sub->p_msg[i_start], p_file );
261 TextPrint( &p_sub->p_msg[i_start], p_file );
266 vlc_mutex_lock( p_sub->p_lock );
267 p_sub->i_start = i_start;
268 vlc_mutex_unlock( p_sub->p_lock );
272 static const char *ppsz_type[4] = { ": ", " error: ",
273 " warning: ", " debug: " };
275 static void TextPrint( const msg_item_t *p_msg, FILE *p_file )
277 LOG_STRING( p_msg->psz_module, p_file );
278 LOG_STRING( ppsz_type[p_msg->i_type], p_file );
279 LOG_STRING( p_msg->psz_msg, p_file );
280 LOG_STRING( "\n", p_file );
283 static void HtmlPrint( const msg_item_t *p_msg, FILE *p_file )
285 static const char *ppsz_color[4] = { "<font color=\"#ffffff\">",
286 "<font color=\"#ff6666\">",
287 "<font color=\"#ffff66\">",
288 "<font color=\"#aaaaaa\">" };
290 LOG_STRING( p_msg->psz_module, p_file );
291 LOG_STRING( ppsz_type[p_msg->i_type], p_file );
292 LOG_STRING( ppsz_color[p_msg->i_type], p_file );
293 LOG_STRING( p_msg->psz_msg, p_file );
294 LOG_STRING( "</font>\n", p_file );