Back to index

tetex-bin  3.0
lib_tracechr.c
Go to the documentation of this file.
00001 /****************************************************************************
00002  * Copyright (c) 1998-2003,2004 Free Software Foundation, Inc.              *
00003  *                                                                          *
00004  * Permission is hereby granted, free of charge, to any person obtaining a  *
00005  * copy of this software and associated documentation files (the            *
00006  * "Software"), to deal in the Software without restriction, including      *
00007  * without limitation the rights to use, copy, modify, merge, publish,      *
00008  * distribute, distribute with modifications, sublicense, and/or sell       *
00009  * copies of the Software, and to permit persons to whom the Software is    *
00010  * furnished to do so, subject to the following conditions:                 *
00011  *                                                                          *
00012  * The above copyright notice and this permission notice shall be included  *
00013  * in all copies or substantial portions of the Software.                   *
00014  *                                                                          *
00015  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
00016  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
00017  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
00018  * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
00019  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
00020  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
00021  * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
00022  *                                                                          *
00023  * Except as contained in this notice, the name(s) of the above copyright   *
00024  * holders shall not be used in advertising or otherwise to promote the     *
00025  * sale, use or other dealings in this Software without prior written       *
00026  * authorization.                                                           *
00027  ****************************************************************************/
00028 
00029 /****************************************************************************
00030  *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
00031  *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
00032  ****************************************************************************/
00033 
00034 /*
00035  *     lib_tracechr.c - Tracing/Debugging routines
00036  */
00037 #include <curses.priv.h>
00038 
00039 #include <ctype.h>
00040 
00041 MODULE_ID("$Id: lib_tracechr.c,v 1.11 2004/04/03 22:45:03 tom Exp $")
00042 
00043 #ifdef TRACE
00044 NCURSES_EXPORT(char *)
00045 _tracechar(int ch)
00046 {
00047     static char result[40];
00048     NCURSES_CONST char *name;
00049 
00050     if (ch > KEY_MIN || ch < 0) {
00051        name = keyname(ch);
00052        if (name == 0 || *name == '\0')
00053            name = "NULL";
00054        (void) sprintf(result, "'%.30s' = %#03o", name, ch);
00055     } else if (!is8bits(ch) || !isprint(UChar(ch))) {
00056        /*
00057         * workaround for glibc bug:
00058         * sprintf changes the result from unctrl() to an empty string if it
00059         * does not correspond to a valid multibyte sequence.
00060         */
00061        (void) sprintf(result, "%#03o", ch);
00062     } else {
00063        name = unctrl(ch);
00064        if (name == 0 || *name == 0)
00065            name = "null";   /* shouldn't happen */
00066        (void) sprintf(result, "'%.30s' = %#03o", name, ch);
00067     }
00068     return (result);
00069 }
00070 #else
00071 empty_module(_nc_lib_tracechr)
00072 #endif