gdb/stub-termcap.c

   1 /* A very minimal do-nothing termcap emulation stub.
   2
   3    Copyright (C) 2005-2024 Free Software Foundation, Inc.
   4
   5    Contributed by CodeSourcery, LLC.
   6
   7    This file is part of GDB.
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  21
  22
  23
  24 extern "C" {
  25
  26 /* -Wmissing-prototypes */
  27 extern int tgetent (char *buffer, char *termtype);
  28 extern int tgetnum (char *name);
  29 extern int tgetflag (char *name);
  30 extern char* tgetstr (char *name, char **area);
  31 extern int tputs (char *string, int nlines, int (*outfun) (int));
  32 extern char *tgoto (const char *cap, int col, int row);
  33
  34 }
  35
  36 /* These globals below are global termcap variables that readline
  37    references.
  38
  39    Actually, depending on preprocessor conditions that we don't want
  40    to mirror here (as they may change depending on readline versions),
  41    readline may define these globals as well, relying on the linker
  42    merging them if needed (-fcommon).  That doesn't work with
  43    -fno-common or C++, so instead we define the symbols as weak.
  44    Don't do this on Windows though, as MinGW gcc 3.4.2 doesn't support
  45    weak (later versions, e.g., 4.8, do support it).  Given this stub
  46    file originally was Windows only, and we only needed this when we
  47    made it work on other hosts, it should be OK.  */
  48 #ifndef __MINGW32__
  49 char PC __attribute__((weak));
  50 char *BC __attribute__((weak));
  51 char *UP __attribute__((weak));
  52 #endif
  53
  54 /* Each of the files below is a minimal implementation of the standard
  55    termcap function with the same name, suitable for use in a Windows
  56    console window, or when a real termcap/curses library isn't
  57    available.  */
  58
  59 int
  60 tgetent (char *buffer, char *termtype)
  61 {
  62   return -1;
  63 }
  64
  65 int
  66 tgetnum (char *name)
  67 {
  68   return -1;
  69 }
  70
  71 int
  72 tgetflag (char *name)
  73 {
  74   return -1;
  75 }
  76
  77 char *
  78 tgetstr (char *name, char **area)
  79 {
  80   return NULL;
  81 }
  82
  83 int
  84 tputs (char *string, int nlines, int (*outfun) (int))
  85 {
  86   while (*string)
  87     outfun (*string++);
  88
  89   return 0;
  90 }
  91
  92 char *
  93 tgoto (const char *cap, int col, int row)
  94 {
  95   return NULL;
  96 }