1 /*****************************************************************************
2 * messages.c: messages interface
3 * This library provides an interface to the message queue to be used by other
4 * modules, especially intf modules. See vlc_config.h for output configuration.
5 *****************************************************************************
6 * Copyright (C) 1998-2005 VLC authors and VideoLAN
9 * Authors: Vincent Seguin <seguin@via.ecp.fr>
10 * Samuel Hocevar <sam@zoy.org>
12 * This program is free software; you can redistribute it and/or modify it
13 * under the terms of the GNU Lesser General Public License as published by
14 * the Free Software Foundation; either version 2.1 of the License, or
15 * (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU Lesser General Public License for more details.
22 * You should have received a copy of the GNU Lesser General Public License
23 * along with this program; if not, write to the Free Software Foundation,
24 * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
25 *****************************************************************************/
27 /*****************************************************************************
29 *****************************************************************************/
36 #include <stdarg.h> /* va_list for BSD */
39 #elif defined(HAVE_LOCALE_H)
42 #include <errno.h> /* errno */
46 #include <vlc_common.h>
47 #include <vlc_interface.h>
49 # include <vlc_network.h> /* 'net_strerror' and 'WSAGetLastError' */
51 #include <vlc_charset.h>
52 #include "../libvlc.h"
56 * \param obj VLC object emitting the message or NULL
57 * \param type VLC_MSG_* message type (info, error, warning or debug)
58 * \param module name of module from which the message come
59 * (normally MODULE_STRING)
60 * \param format printf-like message format
62 void vlc_Log (vlc_object_t *obj, int type, const char *module,
63 const char *format, ... )
67 va_start (args, format);
68 vlc_vaLog (obj, type, module, format, args);
73 static void Win32DebugOutputMsg (void *, int , const vlc_log_t *,
74 const char *, va_list);
78 * Emit a log message. This function is the variable argument list equivalent
81 void vlc_vaLog (vlc_object_t *obj, int type, const char *module,
82 const char *format, va_list args)
84 if (obj != NULL && obj->i_flags & OBJECT_FLAGS_QUIET)
87 /* Get basename from the module filename */
88 char *p = strrchr(module, '/');
91 p = strchr(module, '.');
93 size_t modlen = (p != NULL) ? (p - module) : 1;
94 char modulebuf[modlen];
97 memcpy(modulebuf, module, modlen);
98 modulebuf[modlen] = '\0';
102 /* C locale to get error messages in English in the logs */
103 locale_t c = newlocale (LC_MESSAGES_MASK, "C", (locale_t)0);
104 locale_t locale = uselocale (c);
107 /* Expand %m to strerror(errno) - only once */
108 char buf[strlen(format) + 2001], *ptr;
109 strcpy (buf, format);
111 format = (const char*) buf;
115 ptr = strchr( ptr, '%' );
125 strerror_r( errno, errbuf, 1001 );
127 int sockerr = WSAGetLastError( );
130 strncpy( errbuf, net_strerror( sockerr ), 1001 );
131 WSASetLastError( sockerr );
134 || (strcmp ("Unknown network stack error", errbuf) == 0))
135 strncpy( errbuf, strerror( errno ), 1001 );
139 /* Escape '%' from the error string */
140 for( char *percent = strchr( errbuf, '%' );
142 percent = strchr( percent + 2, '%' ) )
144 memmove( percent + 1, percent, strlen( percent ) + 1 );
147 errlen = strlen( errbuf );
148 memmove( ptr + errlen, ptr + 2, strlen( ptr + 2 ) + 1 );
149 memcpy( ptr, errbuf, errlen );
150 break; /* Only once, so we don't overflow */
153 /* Looks for conversion specifier... */
156 while( *ptr && ( strchr( "diouxXeEfFgGaAcspn%", *ptr ) == NULL ) );
158 ptr++; /* ...and skip it */
162 /* Fill message information fields */
165 msg.i_object_id = (uintptr_t)obj;
166 msg.psz_object_type = (obj != NULL) ? obj->psz_object_type : "generic";
167 msg.psz_module = module;
168 msg.psz_header = NULL;
170 for (vlc_object_t *o = obj; o != NULL; o = o->p_parent)
171 if (o->psz_header != NULL)
173 msg.psz_header = o->psz_header;
177 /* Pass message to the callback */
178 libvlc_priv_t *priv = obj ? libvlc_priv (obj->p_libvlc) : NULL;
184 Win32DebugOutputMsg (priv ? &priv->log.verbose : NULL, type, &msg, format, ap);
189 vlc_rwlock_rdlock (&priv->log.lock);
190 priv->log.cb (priv->log.opaque, type, &msg, format, args);
191 vlc_rwlock_unlock (&priv->log.lock);
198 static const char msg_type[4][9] = { "", " error", " warning", " debug" };
199 #define COL(x,y) "\033[" #x ";" #y "m"
200 #define RED COL(31,1)
201 #define GREEN COL(32,1)
202 #define YELLOW COL(0,33)
203 #define WHITE COL(0,1)
204 #define GRAY "\033[0m"
205 static const char msg_color[4][8] = { WHITE, RED, YELLOW, GRAY };
207 static void PrintColorMsg (void *d, int type, const vlc_log_t *p_item,
208 const char *format, va_list ap)
210 FILE *stream = stderr;
211 int verbose = (intptr_t)d;
213 if (verbose < 0 || verbose < (type - VLC_MSG_ERR))
216 int canc = vlc_savecancel ();
219 fprintf (stream, "["GREEN"%p"GRAY"] ", (void *)p_item->i_object_id);
220 if (p_item->psz_header != NULL)
221 utf8_fprintf (stream, "[%s] ", p_item->psz_header);
222 utf8_fprintf (stream, "%s %s%s: %s", p_item->psz_module,
223 p_item->psz_object_type, msg_type[type], msg_color[type]);
224 utf8_vfprintf (stream, format, ap);
225 fputs (GRAY"\n", stream);
226 #if defined (_WIN32) || defined (__OS2__)
229 funlockfile (stream);
230 vlc_restorecancel (canc);
233 static void PrintMsg (void *d, int type, const vlc_log_t *p_item,
234 const char *format, va_list ap)
236 FILE *stream = stderr;
237 int verbose = (intptr_t)d;
239 if (verbose < 0 || verbose < (type - VLC_MSG_ERR))
242 int canc = vlc_savecancel ();
245 fprintf (stream, "[%p] ", (void *)p_item->i_object_id);
246 if (p_item->psz_header != NULL)
247 utf8_fprintf (stream, "[%s] ", p_item->psz_header);
248 utf8_fprintf (stream, "%s %s%s: ", p_item->psz_module,
249 p_item->psz_object_type, msg_type[type]);
250 utf8_vfprintf (stream, format, ap);
251 putc_unlocked ('\n', stream);
252 #if defined (_WIN32) || defined (__OS2__)
255 funlockfile (stream);
256 vlc_restorecancel (canc);
260 static void Win32DebugOutputMsg (void* d, int type, const vlc_log_t *p_item,
261 const char *format, va_list dol)
265 const signed char *pverbose = d;
266 if (pverbose && (*pverbose < 0 || *pverbose < (type - VLC_MSG_ERR)))
271 int msg_len = vsnprintf(NULL, 0, format, dol2);
277 char *msg = malloc(msg_len + 1 + 1);
281 msg_len = vsnprintf(msg, msg_len+1, format, dol);
283 if(msg[msg_len-1] != '\n'){
285 msg[msg_len + 1] = '\0';
287 char* psz_msg = NULL;
288 if(asprintf(&psz_msg, "%s %s%s: %s", p_item->psz_module,
289 p_item->psz_object_type, msg_type[type], msg) > 0) {
290 wchar_t* wmsg = ToWide(psz_msg);
291 OutputDebugStringW(wmsg);
301 * Sets the message logging callback.
302 * \param cb message callback, or NULL to reset
303 * \param data data pointer for the message callback
305 void vlc_LogSet (libvlc_int_t *vlc, vlc_log_cb cb, void *opaque)
307 libvlc_priv_t *priv = libvlc_priv (vlc);
311 #if defined (HAVE_ISATTY) && !defined (_WIN32)
312 if (isatty (STDERR_FILENO) && var_InheritBool (vlc, "color"))
317 opaque = (void *)(intptr_t)priv->log.verbose;
320 vlc_rwlock_wrlock (&priv->log.lock);
322 priv->log.opaque = opaque;
323 vlc_rwlock_unlock (&priv->log.lock);
325 /* Announce who we are */
326 msg_Dbg (vlc, "VLC media player - %s", VERSION_MESSAGE);
327 msg_Dbg (vlc, "%s", COPYRIGHT_MESSAGE);
328 msg_Dbg (vlc, "revision %s", psz_vlc_changeset);
329 msg_Dbg (vlc, "configured with %s", CONFIGURE_LINE);
332 void vlc_LogInit (libvlc_int_t *vlc)
334 libvlc_priv_t *priv = libvlc_priv (vlc);
337 if (var_InheritBool (vlc, "quiet"))
338 priv->log.verbose = -1;
340 if ((str = getenv ("VLC_VERBOSE")) != NULL)
341 priv->log.verbose = atoi (str);
343 priv->log.verbose = var_InheritInteger (vlc, "verbose");
345 vlc_rwlock_init (&priv->log.lock);
346 vlc_LogSet (vlc, NULL, NULL);
349 void vlc_LogDeinit (libvlc_int_t *vlc)
351 libvlc_priv_t *priv = libvlc_priv (vlc);
353 vlc_rwlock_destroy (&priv->log.lock);