/****************************************************************************
- * Copyright (c) 1998 Free Software Foundation, Inc. *
+ * Copyright (c) 1998-2008,2009 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 *
/****************************************************************************
* Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
* and: Eric S. Raymond <esr@snark.thyrsus.com> *
+ * and: Thomas E. Dickey 1996-on *
****************************************************************************/
-
-
/*
* lib_tracechr.c - Tracing/Debugging routines
*/
-
-#ifndef TRACE
-#define TRACE /* turn on internal defs for this module */
-#endif
-
#include <curses.priv.h>
#include <ctype.h>
+MODULE_ID("$Id: lib_tracechr.c,v 1.20 2009/04/18 22:48:29 tom Exp $")
+
#ifdef TRACE
-char *_tracechar(const unsigned char ch)
+
+NCURSES_EXPORT(char *)
+_nc_tracechar(SCREEN *sp, int ch)
{
- static char crep[20];
- /*
- * We can show the actual character if it's either an ordinary printable
- * or one of the high-half characters.
- */
- if (isprint(ch) || (ch & 0x80))
- {
- crep[0] = '\'';
- crep[1] = ch; /* necessary; printf tries too hard on metachars */
- (void) sprintf(crep + 2, "' = 0x%02x", (unsigned)ch);
+ NCURSES_CONST char *name;
+ char *MyBuffer = ((sp != 0)
+ ? sp->tracechr_buf
+ : _nc_globals.tracechr_buf);
+
+ if (ch > KEY_MIN || ch < 0) {
+ name = safe_keyname(SP_PARM, 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 = safe_unctrl(SP_PARM, (chtype) ch);
+ if (name == 0 || *name == 0)
+ name = "null"; /* shouldn't happen */
+ (void) sprintf(MyBuffer, "'%.30s' = %#03o", name, ch);
}
- else
- (void) sprintf(crep, "0x%02x", (unsigned)ch);
- return(crep);
+ return (MyBuffer);
+}
+
+NCURSES_EXPORT(char *)
+_tracechar(int ch)
+{
+ return _nc_tracechar(CURRENT_SCREEN, ch);
}
#else
-extern void _nc_lib_tracechr(void);
- void _nc_lib_tracechr(void) { }
+EMPTY_MODULE(_nc_lib_tracechr)
#endif