1 /*****************************************************************************
2 * logger.c : file logging plugin for vlc
3 *****************************************************************************
4 * Copyright (C) 2002 VideoLAN
5 * $Id: logger.c,v 1.10 2002/06/01 12:32:00 sam 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 void intf_getfunctions ( function_list_t * p_function_list );
74 static int intf_Open ( intf_thread_t *p_intf );
75 static void intf_Close ( intf_thread_t *p_intf );
76 static void intf_Run ( intf_thread_t *p_intf );
78 static void FlushQueue ( msg_subscription_t *, FILE *, int );
79 static void TextPrint ( const msg_item_t *, FILE * );
80 static void HtmlPrint ( const msg_item_t *, FILE * );
82 /*****************************************************************************
83 * Build configuration tree.
84 *****************************************************************************/
86 ADD_CATEGORY_HINT( N_("Miscellaneous"), NULL )
87 ADD_STRING( "logfile", NULL, NULL, N_("log filename"), N_("Specify the log filename.") )
88 ADD_STRING( "logmode", NULL, NULL, N_("log format"), N_("Specify the log format. Available choices are \"text\" (default) and \"html\"") )
92 SET_DESCRIPTION( _("file logging interface module") )
93 ADD_CAPABILITY( INTF, 1 )
97 intf_getfunctions( &p_module->p_functions->intf );
100 MODULE_DEACTIVATE_START
101 MODULE_DEACTIVATE_STOP
103 /*****************************************************************************
104 * Functions exported as capabilities. They are declared as static so that
105 * we don't pollute the namespace too much.
106 *****************************************************************************/
107 static void intf_getfunctions( function_list_t * p_function_list )
109 p_function_list->functions.intf.pf_open = intf_Open;
110 p_function_list->functions.intf.pf_close = intf_Close;
111 p_function_list->functions.intf.pf_run = intf_Run;
114 /*****************************************************************************
115 * intf_Open: initialize and create stuff
116 *****************************************************************************/
117 static int intf_Open( intf_thread_t *p_intf )
119 char *psz_mode, *psz_file;
123 freopen( "CONOUT$", "w", stdout );
124 freopen( "CONOUT$", "w", stderr );
125 freopen( "CONIN$", "r", stdin );
126 msg_Info( p_intf, VERSION_MESSAGE );
127 msg_Info( p_intf, _("\nUsing the logger interface plugin...") );
130 /* Allocate instance and initialize some members */
131 p_intf->p_sys = (intf_sys_t *)malloc( sizeof( intf_sys_t ) );
132 if( p_intf->p_sys == NULL )
134 msg_Err( p_intf, "out of memory" );
138 psz_mode = config_GetPsz( p_intf, "logmode" );
141 if( !strcmp( psz_mode, "text" ) )
143 p_intf->p_sys->i_mode = MODE_TEXT;
145 else if( !strcmp( psz_mode, "html" ) )
147 p_intf->p_sys->i_mode = MODE_HTML;
151 msg_Err( p_intf, "invalid log mode `%s', using `text'", psz_mode );
152 p_intf->p_sys->i_mode = MODE_TEXT;
159 msg_Warn( p_intf, "no log mode specified, using `text'" );
160 p_intf->p_sys->i_mode = MODE_TEXT;
163 psz_file = config_GetPsz( p_intf, "logfile" );
166 switch( p_intf->p_sys->i_mode )
169 psz_file = strdup( "vlc-log.html" );
173 psz_file = strdup( "vlc-log.txt" );
177 msg_Warn( p_intf, "no log filename provided, using `%s'", psz_file );
180 /* Open the log file and remove any buffering for the stream */
181 msg_Dbg( p_intf, "opening logfile `%s'", psz_file );
182 p_intf->p_sys->p_file = fopen( psz_file, "wt" );
183 setvbuf( p_intf->p_sys->p_file, NULL, _IONBF, 0 );
185 p_intf->p_sys->p_sub = msg_Subscribe( p_intf->p_this );
187 if( p_intf->p_sys->p_file == NULL )
189 msg_Err( p_intf, "error opening logfile `%s'", psz_file );
190 free( p_intf->p_sys );
191 msg_Unsubscribe( p_intf->p_this, p_intf->p_sys->p_sub );
198 switch( p_intf->p_sys->i_mode )
201 LOG_STRING( HTML_HEADER, p_intf->p_sys->p_file );
205 LOG_STRING( TEXT_HEADER, p_intf->p_sys->p_file );
212 /*****************************************************************************
213 * intf_Close: destroy interface stuff
214 *****************************************************************************/
215 static void intf_Close( intf_thread_t *p_intf )
217 /* Flush the queue and unsubscribe from the message queue */
218 FlushQueue( p_intf->p_sys->p_sub, p_intf->p_sys->p_file,
219 p_intf->p_sys->i_mode );
220 msg_Unsubscribe( p_intf->p_this, p_intf->p_sys->p_sub );
222 switch( p_intf->p_sys->i_mode )
225 LOG_STRING( HTML_FOOTER, p_intf->p_sys->p_file );
229 LOG_STRING( TEXT_FOOTER, p_intf->p_sys->p_file );
233 /* Close the log file */
234 fclose( p_intf->p_sys->p_file );
236 /* Destroy structure */
237 free( p_intf->p_sys );
240 /*****************************************************************************
241 * intf_Run: rc thread
242 *****************************************************************************
243 * This part of the interface is in a separate thread so that we can call
244 * exec() from within it without annoying the rest of the program.
245 *****************************************************************************/
246 static void intf_Run( intf_thread_t *p_intf )
248 while( !p_intf->p_vlc->b_die )
250 FlushQueue( p_intf->p_sys->p_sub, p_intf->p_sys->p_file,
251 p_intf->p_sys->i_mode );
253 msleep( INTF_IDLE_SLEEP );
257 /*****************************************************************************
258 * FlushQueue: flush the message queue into the log file
259 *****************************************************************************/
260 static void FlushQueue( msg_subscription_t *p_sub, FILE *p_file, int i_mode )
264 vlc_mutex_lock( p_sub->p_lock );
265 i_stop = *p_sub->pi_stop;
266 vlc_mutex_unlock( p_sub->p_lock );
268 if( p_sub->i_start != i_stop )
270 /* Append all messages to log file */
271 for( i_start = p_sub->i_start;
273 i_start = (i_start+1) % VLC_MSG_QSIZE )
278 HtmlPrint( &p_sub->p_msg[i_start], p_file );
282 TextPrint( &p_sub->p_msg[i_start], p_file );
287 vlc_mutex_lock( p_sub->p_lock );
288 p_sub->i_start = i_start;
289 vlc_mutex_unlock( p_sub->p_lock );
293 static const char *ppsz_type[4] = { ": ", " error: ",
294 " warning: ", " debug: " };
296 static void TextPrint( const msg_item_t *p_msg, FILE *p_file )
298 LOG_STRING( p_msg->psz_module, p_file );
299 LOG_STRING( ppsz_type[p_msg->i_type], p_file );
300 LOG_STRING( p_msg->psz_msg, p_file );
301 LOG_STRING( "\n", p_file );
304 static void HtmlPrint( const msg_item_t *p_msg, FILE *p_file )
306 static const char *ppsz_color[4] = { "<font color=\"#ffffff\">",
307 "<font color=\"#ff6666\">",
308 "<font color=\"#ffff66\">",
309 "<font color=\"#aaaaaa\">" };
311 LOG_STRING( p_msg->psz_module, p_file );
312 LOG_STRING( ppsz_type[p_msg->i_type], p_file );
313 LOG_STRING( ppsz_color[p_msg->i_type], p_file );
314 LOG_STRING( p_msg->psz_msg, p_file );
315 LOG_STRING( "</font>\n", p_file );