Fix #4 Relative dates brakes format detection

Date detection on stdin enabled

src/include/ttail_search_std.h

@@ -56,14 +56,14 @@ struct _ttail_search_stdin_s
  */
 int ttail_search_std_init(ttail_t* t);
 
-/**@brief Provide datas for format autodetection
- *@param ttail_t* t
- *@param int* : retry left
- *@param size_t* : line count
- *@param char*** : pointer on lines buffer
- *@return -1 on error 1 on autodetection impossible 0 on success
+/**@brief Date format initialisation using logfiles
+ *
+ *If no format set yet attempt to guess it from logfiles
+ *@param ttail_t*
+ *@return 0 on success -1 on failure 1 if format was allready set
+ *@see _ttail_search_files_fmt_guess()
  */
-int _ttail_search_fmtdetect_provider_std(ttail_t*, int*, size_t*, char***);
+int _ttail_search_std_fmt_init(ttail_t*);
 
 /**@brief @ref ttail_search_closest() implementation for stdin
  *@warning Expect that ttail_search_closest_std_init() has been called

src/ttail_search_std.c

@@ -28,13 +28,58 @@ int ttail_search_std_init(ttail_t* t)
 	}
 	t->session->std.buff = NULL;
 	t->session->std.buff_sz = 0;
+	if(_ttail_search_std_fmt_init(t) < 0)
+	{
+		return -1;
+	}
 	return 0;
 }
 
-int _ttail_search_fmtdetect_provider_std(ttail_t *t, int *try_left, 
-		size_t* line_sz, char*** lines_ptr)
+int _ttail_search_std_fmt_init(ttail_t* t)
 {
-	return 1;
+	ssize_t rd_sz;
+	const char *buff;
+	int fmt_id, max_lines, i;
+	const char *fmt[] = TTAIL_DEFAULT_FORMATS;
+
+	if(t->flag & TTAIL_FLAG_FORMAT)
+	{
+		return 1;
+	}
+
+	max_lines = 10;
+	
+	for(i=0; i<max_lines; i++)
+	{
+		if((rd_sz = ttail_std_getline(t)) < 0)
+		{
+			fprintf(stderr, "Unable to detect date from stdin\n");
+			return -1;
+		}
+
+		buff = ttail_logline_subst(t, ttail_std_getline_buff(t));
+		fmt_id = ttail_format_guess(buff, NULL);
+		if(fmt_id >= 0)
+		{
+			break;
+		}
+	}
+	if(fmt_id < 0)
+	{
+		fprintf(stderr, "Unable to detect date format from stdin\
+after %d lines were readed\n", max_lines);
+		return -1;
+	}
+	buff = fmt[fmt_id];
+	t->fmt = malloc(sizeof(char) *  (strlen(buff)+1));
+	if(!t->fmt)
+	{
+		perror("Unable to allocate memory for date format");
+		return -1;
+	}
+	strcpy(t->fmt, buff);
+	t->flag |= TTAIL_FLAG_FORMAT;
+	return 0;
 }
 
 int _ttail_search_closest_stdin(ttail_t* t)
@@ -48,16 +93,20 @@ int _ttail_search_closest_stdin(ttail_t* t)
 	}
 	if(! t->session->std.buff)
 	{
-		rd_sz = ttail_std_getline(t);
+		if((rd_sz = ttail_std_getline(t)) < 0)
+		{
+			perror("Unable to read stdin");
+			return -1;
+		}
 	}
 	else
 	{
+		/*first line allready in the buffer thank's to format
+		 *detection*/
 		rd_sz = strlen(ttail_std_getline_buff(t)) + 1;
 	}
 	while(rd_sz > 0)
 	{
-		/*first line allready in the buffer thank's to format
-		 *detection*/
 		ttail_tm_init(&tm);
 		ret = ttail_logline2date(t, ttail_std_getline_buff(t), &tm);
 		if(ret < 0)