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

   1 /****************************************************************************
   2  * Copyright (c) 1998-2012,2015 Free Software Foundation, Inc.              *
   3  *                                                                          *
   4  * Permission is hereby granted, free of charge, to any person obtaining a  *
   5  * copy of this software and associated documentation files (the            *
   6  * "Software"), to deal in the Software without restriction, including      *
   7  * without limitation the rights to use, copy, modify, merge, publish,      *
   8  * distribute, distribute with modifications, sublicense, and/or sell       *
   9  * copies of the Software, and to permit persons to whom the Software is    *
  10  * furnished to do so, subject to the following conditions:                 *
  11  *                                                                          *
  12  * The above copyright notice and this permission notice shall be included  *
  13  * in all copies or substantial portions of the Software.                   *
  14  *                                                                          *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
  16  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
  18  * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
  21  * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
  22  *                                                                          *
  23  * Except as contained in this notice, the name(s) of the above copyright   *
  24  * holders shall not be used in advertising or otherwise to promote the     *
  25  * sale, use or other dealings in this Software without prior written       *
  26  * authorization.                                                           *
  27  ****************************************************************************/
  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 #include <curses.priv.h>
  36
  37 MODULE_ID("$Id: lib_tracebits.c,v 1.26 2015/04/19 14:58:39 tom Exp $")
  38
  39 #if HAVE_SYS_TERMIO_H
  40 #include <sys/termio.h>         /* needed for ISC */
  41 #endif
  42
  43 #ifdef __EMX__
  44 #include <io.h>
  45 #endif
  46
  47 /* may be undefined if we're using termio.h */
  48 #ifndef TOSTOP
  49 #define TOSTOP 0
  50 #endif
  51
  52 #ifndef IEXTEN
  53 #define IEXTEN 0
  54 #endif
  55
  56 #ifndef ONLCR
  57 #define ONLCR 0
  58 #endif
  59
  60 #ifndef OCRNL
  61 #define OCRNL 0
  62 #endif
  63
  64 #ifndef ONOCR
  65 #define ONOCR 0
  66 #endif
  67
  68 #ifndef ONLRET
  69 #define ONLRET 0
  70 #endif
  71
  72 #ifdef TRACE
  73
  74 typedef struct {
  75     unsigned int val;
  76     const char name[8];
  77 } BITNAMES;
  78
  79 #define TRACE_BUF_SIZE(num) (_nc_globals.tracebuf_ptr[num].size)
  80
  81 static void
  82 lookup_bits(char *buf, const BITNAMES * table, const char *label, unsigned int val)
  83 {
  84     const BITNAMES *sp;
  85
  86     _nc_STRCAT(buf, label, TRACE_BUF_SIZE(0));
  87     _nc_STRCAT(buf, ": {", TRACE_BUF_SIZE(0));
  88     for (sp = table; sp->name[0]; sp++)
  89         if (sp->val != 0
  90             && (val & sp->val) == sp->val) {
  91             _nc_STRCAT(buf, sp->name, TRACE_BUF_SIZE(0));
  92             _nc_STRCAT(buf, ", ", TRACE_BUF_SIZE(0));
  93         }
  94     if (buf[strlen(buf) - 2] == ',')
  95         buf[strlen(buf) - 2] = '\0';
  96     _nc_STRCAT(buf, "} ", TRACE_BUF_SIZE(0));
  97 }
  98
  99 NCURSES_EXPORT(char *)
 100 _nc_trace_ttymode(TTY * tty)
 101 /* describe the state of the terminal control bits exactly */
 102 {
 103     char *buf;
 104
 105 #ifdef TERMIOS
 106 #define DATA(name)        { name, { #name } }
 107 #define DATA2(name,name2) { name, { #name2 } }
 108 #define DATAX()           { 0,    { "" } }
 109     static const BITNAMES iflags[] =
 110     {
 111         DATA(BRKINT),
 112         DATA(IGNBRK),
 113         DATA(IGNPAR),
 114         DATA(PARMRK),
 115         DATA(INPCK),
 116         DATA(ISTRIP),
 117         DATA(INLCR),
 118         DATA(IGNCR),
 119         DATA(ICRNL),
 120         DATA(IXON),
 121         DATA(IXOFF),
 122         DATAX()
 123 #define ALLIN   (BRKINT|IGNBRK|IGNPAR|PARMRK|INPCK|ISTRIP|INLCR|IGNCR|ICRNL|IXON|IXOFF)
 124     }, oflags[] =
 125     {
 126         DATA(OPOST),
 127         DATA2(OFLAGS_TABS, XTABS),
 128         DATA(ONLCR),
 129         DATA(OCRNL),
 130         DATA(ONOCR),
 131         DATA(ONLRET),
 132         DATAX()
 133 #define ALLOUT  (OPOST|OFLAGS_TABS|ONLCR|OCRNL|ONOCR|ONLRET)
 134     }, cflags[] =
 135     {
 136         DATA(CLOCAL),
 137         DATA(CREAD),
 138         DATA(CSTOPB),
 139 #if !defined(CS5) || !defined(CS8)
 140         DATA(CSIZE),
 141 #endif
 142         DATA(HUPCL),
 143         DATA(PARENB),
 144         DATA2(PARODD | PARENB, PARODD),
 145         DATAX()
 146 #define ALLCTRL (CLOCAL|CREAD|CSIZE|CSTOPB|HUPCL|PARENB|PARODD)
 147     }, lflags[] =
 148     {
 149         DATA(ECHO),
 150         DATA2(ECHOE | ECHO, ECHOE),
 151         DATA2(ECHOK | ECHO, ECHOK),
 152         DATA(ECHONL),
 153         DATA(ICANON),
 154         DATA(ISIG),
 155         DATA(NOFLSH),
 156         DATA(TOSTOP),
 157         DATA(IEXTEN),
 158         DATAX()
 159 #define ALLLOCAL        (ECHO|ECHONL|ICANON|ISIG|NOFLSH|TOSTOP|IEXTEN)
 160     };
 161
 162     buf = _nc_trace_buf(0,
 163                         8 + sizeof(iflags) +
 164                         8 + sizeof(oflags) +
 165                         8 + sizeof(cflags) +
 166                         8 + sizeof(lflags) +
 167                         8);
 168     if (buf != 0) {
 169
 170         if (tty->c_iflag & ALLIN)
 171             lookup_bits(buf, iflags, "iflags", tty->c_iflag);
 172
 173         if (tty->c_oflag & ALLOUT)
 174             lookup_bits(buf, oflags, "oflags", tty->c_oflag);
 175
 176         if (tty->c_cflag & ALLCTRL)
 177             lookup_bits(buf, cflags, "cflags", tty->c_cflag);
 178
 179 #if defined(CS5) && defined(CS8)
 180         {
 181             static const struct {
 182                 int value;
 183                 const char name[5];
 184             } csizes[] = {
 185 #define CS_DATA(name) { name, { #name " " } }
 186                 CS_DATA(CS5),
 187 #ifdef CS6
 188                     CS_DATA(CS6),
 189 #endif
 190 #ifdef CS7
 191                     CS_DATA(CS7),
 192 #endif
 193                     CS_DATA(CS8),
 194             };
 195             const char *result = "CSIZE? ";
 196             int value = (int) (tty->c_cflag & CSIZE);
 197             unsigned n;
 198
 199             if (value != 0) {
 200                 for (n = 0; n < SIZEOF(csizes); n++) {
 201                     if (csizes[n].value == value) {
 202                         result = csizes[n].name;
 203                         break;
 204                     }
 205                 }
 206             }
 207             _nc_STRCAT(buf, result, TRACE_BUF_SIZE(0));
 208         }
 209 #endif
 210
 211         if (tty->c_lflag & ALLLOCAL)
 212             lookup_bits(buf, lflags, "lflags", tty->c_lflag);
 213     }
 214 #else
 215     /* reference: ttcompat(4M) on SunOS 4.1 */
 216 #ifndef EVENP
 217 #define EVENP 0
 218 #endif
 219 #ifndef LCASE
 220 #define LCASE 0
 221 #endif
 222 #ifndef LLITOUT
 223 #define LLITOUT 0
 224 #endif
 225 #ifndef ODDP
 226 #define ODDP 0
 227 #endif
 228 #ifndef TANDEM
 229 #define TANDEM 0
 230 #endif
 231
 232     static const BITNAMES cflags[] =
 233     {
 234         DATA(CBREAK),
 235         DATA(CRMOD),
 236         DATA(ECHO),
 237         DATA(EVENP),
 238         DATA(LCASE),
 239         DATA(LLITOUT),
 240         DATA(ODDP),
 241         DATA(RAW),
 242         DATA(TANDEM),
 243         DATA(XTABS),
 244         DATAX()
 245 #define ALLCTRL (CBREAK|CRMOD|ECHO|EVENP|LCASE|LLITOUT|ODDP|RAW|TANDEM|XTABS)
 246     };
 247
 248     buf = _nc_trace_buf(0,
 249                         8 + sizeof(cflags));
 250     if (buf != 0) {
 251         if (tty->sg_flags & ALLCTRL) {
 252             lookup_bits(buf, cflags, "cflags", tty->sg_flags);
 253         }
 254     }
 255 #endif
 256     return (buf);
 257 }
 258
 259 NCURSES_EXPORT(char *)
 260 _nc_tracebits(void)
 261 {
 262     return _nc_trace_ttymode(&(cur_term->Nttyb));
 263 }
 264 #else
 265 EMPTY_MODULE(_nc_empty_lib_tracebits)
 266 #endif /* TRACE */