X-Git-Url: https://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=ncurses%2Ftrace%2Flib_tracechr.c;h=479756ac59beee19b3b92988f31ee65ec04d5663;hp=bf004f35294ed54fc806aac449601ca85b1455d7;hb=a1aff38c9421e79f92cd4e8ab0587fdf3806cc28;hpb=b1f61d9f3aa244512045a6b02e759825d7049d34

diff --git a/ncurses/trace/lib_tracechr.c b/ncurses/trace/lib_tracechr.c
index bf004f35..479756ac 100644
--- a/ncurses/trace/lib_tracechr.c
+++ b/ncurses/trace/lib_tracechr.c
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright (c) 1998,2000 Free Software Foundation, Inc.                   *
+ * Copyright (c) 1998-2005,2007 Free Software Foundation, Inc.              *
  *                                                                          *
  * Permission is hereby granted, free of charge, to any person obtaining a  *
  * copy of this software and associated documentation files (the            *
@@ -29,6 +29,7 @@
 /****************************************************************************
  *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
  *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
+ *     and: Thomas E. Dickey                        1996-on                 *
  ****************************************************************************/
 
 /*
@@ -36,16 +37,38 @@
  */
 #include <curses.priv.h>
 
-MODULE_ID("$Id: lib_tracechr.c,v 1.2 2000/04/01 20:17:26 tom Exp $")
+#include <ctype.h>
+
+MODULE_ID("$Id: lib_tracechr.c,v 1.13 2007/04/21 23:16:37 tom Exp $")
 
 #ifdef TRACE
-char *_tracechar(const unsigned char ch)
+#define MyBuffer _nc_globals.tracechr_buf
+
+NCURSES_EXPORT(char *)
+_tracechar(int ch)
 {
-    static char crep[20];
-    (void) sprintf(crep, "'%s' = 0x%02x", unctrl(ch), (unsigned)ch);
-    return(crep);
+    NCURSES_CONST char *name;
+
+    if (ch > KEY_MIN || ch < 0) {
+	name = keyname(ch);
+	if (name == 0 || *name == '\0')
+	    name = "NULL";
+	(void) sprintf(MyBuffer, "'%.30s' = %#03o", name, ch);
+    } else if (!is8bits(ch) || !isprint(UChar(ch))) {
+	/*
+	 * workaround for glibc bug:
+	 * sprintf changes the result from unctrl() to an empty string if it
+	 * does not correspond to a valid multibyte sequence.
+	 */
+	(void) sprintf(MyBuffer, "%#03o", ch);
+    } else {
+	name = unctrl((chtype) ch);
+	if (name == 0 || *name == 0)
+	    name = "null";	/* shouldn't happen */
+	(void) sprintf(MyBuffer, "'%.30s' = %#03o", name, ch);
+    }
+    return (MyBuffer);
 }
 #else
-extern	void _nc_lib_tracechr(void);
-	void _nc_lib_tracechr(void) { }
+empty_module(_nc_lib_tracechr)
 #endif