release/src/router/libncurses/ncurses/trace/lib_tracechr.c

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   2  * Copyright (c) 1998-2008,2009 Free Software Foundation, Inc.              *
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  28
  29 /****************************************************************************
  30  *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
  31  *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
  32  *     and: Thomas E. Dickey                        1996-on                 *
  33  ****************************************************************************/
  34
  35 /*
  36  *      lib_tracechr.c - Tracing/Debugging routines
  37  */
  38 #include <curses.priv.h>
  39
  40 #include <ctype.h>
  41
  42 MODULE_ID("$Id: lib_tracechr.c,v 1.20 2009/04/18 22:48:29 tom Exp $")
  43
  44 #ifdef TRACE
  45
  46 NCURSES_EXPORT(char *)
  47 _nc_tracechar(SCREEN *sp, int ch)
  48 {
  49     NCURSES_CONST char *name;
  50     char *MyBuffer = ((sp != 0)
  51                       ? sp->tracechr_buf
  52                       : _nc_globals.tracechr_buf);
  53
  54     if (ch > KEY_MIN || ch < 0) {
  55         name = safe_keyname(SP_PARM, ch);
  56         if (name == 0 || *name == '\0')
  57             name = "NULL";
  58         (void) sprintf(MyBuffer, "'%.30s' = %#03o", name, ch);
  59     } else if (!is8bits(ch) || !isprint(UChar(ch))) {
  60         /*
  61          * workaround for glibc bug:
  62          * sprintf changes the result from unctrl() to an empty string if it
  63          * does not correspond to a valid multibyte sequence.
  64          */
  65         (void) sprintf(MyBuffer, "%#03o", ch);
  66     } else {
  67         name = safe_unctrl(SP_PARM, (chtype) ch);
  68         if (name == 0 || *name == 0)
  69             name = "null";      /* shouldn't happen */
  70         (void) sprintf(MyBuffer, "'%.30s' = %#03o", name, ch);
  71     }
  72     return (MyBuffer);
  73 }
  74
  75 NCURSES_EXPORT(char *)
  76 _tracechar(int ch)
  77 {
  78     return _nc_tracechar(CURRENT_SCREEN, ch);
  79 }
  80 #else
  81 EMPTY_MODULE(_nc_lib_tracechr)
  82 #endif