1 /*****************************************************************************
2 * logger.c : file logging plugin for vlc
3 *****************************************************************************
4 * Copyright (C) 2002 VideoLAN
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" };
85 static char *mode_list_text[] = { N_("Text"), N_("Html") };
87 #define LOGMODE_TEXT N_("Log format")
88 #define LOGMODE_LONGTEXT N_("Specify the log format. Available choices are \"text\" (default) and \"html\".")
91 set_description( _("File logging interface") );
93 add_file( "logfile", NULL, NULL, N_("Log filename"), N_("Specify the log filename."), VLC_FALSE );
94 add_string( "logmode", "text", NULL, LOGMODE_TEXT, LOGMODE_LONGTEXT,
96 change_string_list( mode_list, mode_list_text, 0 );
98 set_capability( "interface", 0 );
99 set_callbacks( Open, Close );
102 /*****************************************************************************
103 * Open: initialize and create stuff
104 *****************************************************************************/
105 static int Open( vlc_object_t *p_this )
107 intf_thread_t *p_intf = (intf_thread_t *)p_this;
108 char *psz_mode, *psz_file;
111 msg_Info( p_intf, "Using the logger interface module..." );
113 /* Allocate instance and initialize some members */
114 p_intf->p_sys = (intf_sys_t *)malloc( sizeof( intf_sys_t ) );
115 if( p_intf->p_sys == NULL )
117 msg_Err( p_intf, "out of memory" );
121 psz_mode = config_GetPsz( p_intf, "logmode" );
124 if( !strcmp( psz_mode, "text" ) )
126 p_intf->p_sys->i_mode = MODE_TEXT;
128 else if( !strcmp( psz_mode, "html" ) )
130 p_intf->p_sys->i_mode = MODE_HTML;
134 msg_Err( p_intf, "invalid log mode `%s', using `text'", psz_mode );
135 p_intf->p_sys->i_mode = MODE_TEXT;
142 msg_Warn( p_intf, "no log mode specified, using `text'" );
143 p_intf->p_sys->i_mode = MODE_TEXT;
146 psz_file = config_GetPsz( p_intf, "logfile" );
149 switch( p_intf->p_sys->i_mode )
152 psz_file = strdup( "vlc-log.html" );
156 psz_file = strdup( "vlc-log.txt" );
160 msg_Warn( p_intf, "no log filename provided, using `%s'", psz_file );
163 /* Open the log file and remove any buffering for the stream */
164 msg_Dbg( p_intf, "opening logfile `%s'", psz_file );
165 p_intf->p_sys->p_file = fopen( psz_file, "wt" );
166 if( p_intf->p_sys->p_file == NULL )
168 msg_Err( p_intf, "error opening logfile `%s'", psz_file );
169 free( p_intf->p_sys );
173 setvbuf( p_intf->p_sys->p_file, NULL, _IONBF, 0 );
174 p_intf->p_sys->p_sub = msg_Subscribe( p_intf );
178 switch( p_intf->p_sys->i_mode )
181 LOG_STRING( HTML_HEADER, p_intf->p_sys->p_file );
185 LOG_STRING( TEXT_HEADER, p_intf->p_sys->p_file );
189 p_intf->pf_run = Run;
194 /*****************************************************************************
195 * Close: destroy interface stuff
196 *****************************************************************************/
197 static void Close( vlc_object_t *p_this )
199 intf_thread_t *p_intf = (intf_thread_t *)p_this;
201 /* Flush the queue and unsubscribe from the message queue */
202 FlushQueue( p_intf->p_sys->p_sub, p_intf->p_sys->p_file,
203 p_intf->p_sys->i_mode );
204 msg_Unsubscribe( p_intf, p_intf->p_sys->p_sub );
206 switch( p_intf->p_sys->i_mode )
209 LOG_STRING( HTML_FOOTER, p_intf->p_sys->p_file );
213 LOG_STRING( TEXT_FOOTER, p_intf->p_sys->p_file );
217 /* Close the log file */
218 fclose( p_intf->p_sys->p_file );
220 /* Destroy structure */
221 free( p_intf->p_sys );
224 /*****************************************************************************
226 *****************************************************************************
227 * This part of the interface is in a separate thread so that we can call
228 * exec() from within it without annoying the rest of the program.
229 *****************************************************************************/
230 static void Run( intf_thread_t *p_intf )
232 while( !p_intf->b_die )
234 FlushQueue( p_intf->p_sys->p_sub, p_intf->p_sys->p_file,
235 p_intf->p_sys->i_mode );
237 msleep( INTF_IDLE_SLEEP );
241 /*****************************************************************************
242 * FlushQueue: flush the message queue into the log file
243 *****************************************************************************/
244 static void FlushQueue( msg_subscription_t *p_sub, FILE *p_file, int i_mode )
248 vlc_mutex_lock( p_sub->p_lock );
249 i_stop = *p_sub->pi_stop;
250 vlc_mutex_unlock( p_sub->p_lock );
252 if( p_sub->i_start != i_stop )
254 /* Append all messages to log file */
255 for( i_start = p_sub->i_start;
257 i_start = (i_start+1) % VLC_MSG_QSIZE )
262 HtmlPrint( &p_sub->p_msg[i_start], p_file );
266 TextPrint( &p_sub->p_msg[i_start], p_file );
271 vlc_mutex_lock( p_sub->p_lock );
272 p_sub->i_start = i_start;
273 vlc_mutex_unlock( p_sub->p_lock );
277 static const char *ppsz_type[4] = { ": ", " error: ",
278 " warning: ", " debug: " };
280 static void TextPrint( const msg_item_t *p_msg, FILE *p_file )
282 LOG_STRING( p_msg->psz_module, p_file );
283 LOG_STRING( ppsz_type[p_msg->i_type], p_file );
284 LOG_STRING( p_msg->psz_msg, p_file );
285 LOG_STRING( "\n", p_file );
288 static void HtmlPrint( const msg_item_t *p_msg, FILE *p_file )
290 static const char *ppsz_color[4] = { "<font color=\"#ffffff\">",
291 "<font color=\"#ff6666\">",
292 "<font color=\"#ffff66\">",
293 "<font color=\"#aaaaaa\">" };
295 LOG_STRING( p_msg->psz_module, p_file );
296 LOG_STRING( ppsz_type[p_msg->i_type], p_file );
297 LOG_STRING( ppsz_color[p_msg->i_type], p_file );
298 LOG_STRING( p_msg->psz_msg, p_file );
299 LOG_STRING( "</font>\n", p_file );