Create file_is_absolute() util

This was duplicated multiple times already

src/common/text.c

@@ -482,26 +482,9 @@ logmask_is_fullpath ()
 	/* Check if final path/filename is absolute or relative.
 	 * If one uses log mask variables, such as "%c/...", %c will be empty upon
 	 * connecting since there's no channel name yet, so we have to make sure
-	 * we won't try to write to the FS root. On Windows we can be sure it's
-	 * full path if the 2nd character is a colon since Windows doesn't allow
-	 * colons in filenames.
+	 * we won't try to write to the FS root.
 	 */
-#ifdef WIN32
-	/* Treat it as full path if it
-	 * - starts with '\' which denotes the root directory of the current drive letter
-	 * - starts with a drive letter and followed by ':'
-	 */
-	if (prefs.hex_irc_logmask[0] == '\\' || (((prefs.hex_irc_logmask[0] >= 'A' && prefs.hex_irc_logmask[0] <= 'Z') || (prefs.hex_irc_logmask[0] >= 'a' && prefs.hex_irc_logmask[0] <= 'z')) && prefs.hex_irc_logmask[1] == ':'))
-#else
-	if (prefs.hex_irc_logmask[0] == '/')
-#endif
-	{
-		return 1;
-	}
-	else
-	{
-		return 0;
-	}
+	return file_is_absolute (prefs.hex_irc_logmask);
 }
 
 static char *
@@ -2252,12 +2235,7 @@ sound_play (const char *file, gboolean quiet)
 		return;
 	}
 
-#ifdef WIN32
-	/* check for fullpath */
-	if (file[0] == '\\' || (((file[0] >= 'A' && file[0] <= 'Z') || (file[0] >= 'a' && file[0] <= 'z')) && file[1] == ':'))
-#else
-	if (file[0] == '/')
-#endif
+	if (file_is_absolute (file))
 	{
 		wavfile = g_strdup (file);
 	}

src/common/util.c

@@ -1964,3 +1964,25 @@ strftime_utf8 (char *dest, gsize destsize, const char *format, time_t time)
 	g_date_free (date);
 	return result;
 }
+
+gboolean
+file_is_absolute (const gchar *filename)
+{
+	/*
+	 * On Windows we can be sure it's
+	 * full path if the 2nd character is a colon since Windows doesn't allow
+	 * colons in filenames.
+	 */
+#ifdef WIN32
+	/* Treat it as full path if it:
+	 * - starts with '\' which denotes the root directory of the current drive letter
+	 * - starts with a drive letter and followed by ':'
+	 */
+	if (filename[0] == '\\' || (((filename[0] >= 'A' && filename[0] <= 'Z') || (filename[0] >= 'a' && filename[0] <= 'z')) && filename[1] == ':'))
+#else
+	if (filename[0] == '/')
+#endif
+		return TRUE;
+	
+	return FALSE;
+}

src/common/util.h

@@ -50,6 +50,7 @@ char *country (char *);
 void country_search (char *pattern, void *ud, void (*print)(void *, char *, ...));
 char *get_sys_str (int with_cpu);
 void util_exec (const char *cmd);
+gboolean file_is_absolute (const gchar *filename);
 #define STRIP_COLOR 1
 #define STRIP_ATTRIB 2
 #define STRIP_HIDDEN 4