old-cross-binutils/readline/shell.c
Elena Zannoni 9255ee3150 Import of readline 4.3.
Non-readline modified files:

src/gdb/ChangeLog src/gdb/defs.h src/gdb/cli/cli-cmds.c
src/gdb/cli/cli-setshow.c src/gdb/tui/ChangeLog
src/gdb/tui/tuiWin.c

In readline directory:

        * compat.c, mbutil.c, misc.c, rlmbutil.h, rltypedefs.h,
        text.c, doc/history.0, doc/history.3, support/wcwidth.c,
        examples/readlinebuf.h, examples/rlcat.c: New files.

        * CHANGELOG, CHANGES, INSTALL,  MANIFEST, Makefile.in, README,
        aclocal.m4, ansi_stdlib.h, bind.c, callback.c, chardefs.h,
        complete.c, config.h.in, configure, configure.in, display.c,
        emacs_keymap.c, funmap.c, histexpand.c, histfile.c, histlib.h,
        history.c, history.h, histsearch.c, input.c, isearch.c,
        keymaps.c, keymaps.h, kill.c, macro.c, nls.c, parens.c,
        posixdir.h, readline.c, readline.h, rlconf.h, rldefs.h,
        rlprivate.h, rlshell.h, rlstdc.h, rltty.c, savestring.c,
        search.c, shell.c, signals.c, terminal.c, tilde.c, tilde.h,
        undo.c, util.c, vi_keymap.c, vi_mode.c, xmalloc.c, xmalloc.h,
        doc/Makefile.in, doc/hist.texinfo, doc/hstech.texinfo,
        doc/hsuser.texinfo, doc/manvers.texinfo, doc/readline.3,
        doc/rlman.texinfo, doc/rltech.texinfo, doc/rluser.texinfo
        doc/rluserman.texinfo, doc/texi2dvi, doc/texi2html,
        shlib/Makefile.in, support/install.sh, support/mkdirs,
        support/mkdist, support/shlib-install, support/shobj-conf,
        examples/Inputrc, examples/Makefile.in, examples/fileman.c,
        examples/histexamp.c, examples/manexamp.c, examples/rl.c,
        examples/rlfe.c, examples/rltest.c, examples/rlversion.c:
        Modified files.
2002-12-08 22:31:39 +00:00

197 lines
4.4 KiB
C

/* shell.c -- readline utility functions that are normally provided by
bash when readline is linked as part of the shell. */
/* Copyright (C) 1997 Free Software Foundation, Inc.
This file is part of the GNU Readline Library, a library for
reading lines of text with interactive input and history editing.
The GNU Readline Library is free software; you can redistribute it
and/or modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2, or
(at your option) any later version.
The GNU Readline Library is distributed in the hope that it will be
useful, but WITHOUT ANY WARRANTY; without even the implied warranty
of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
The GNU General Public License is often shipped with GNU software, and
is generally kept in a file called COPYING or LICENSE. If you do not
have a copy of the license, write to the Free Software Foundation,
59 Temple Place, Suite 330, Boston, MA 02111 USA. */
#define READLINE_LIBRARY
#if defined (HAVE_CONFIG_H)
# include <config.h>
#endif
#include <sys/types.h>
#include <stdio.h>
#if defined (HAVE_UNISTD_H)
# include <unistd.h>
#endif /* HAVE_UNISTD_H */
#if defined (HAVE_STDLIB_H)
# include <stdlib.h>
#else
# include "ansi_stdlib.h"
#endif /* HAVE_STDLIB_H */
#if defined (HAVE_STRING_H)
# include <string.h>
#else
# include <strings.h>
#endif /* !HAVE_STRING_H */
#if defined (HAVE_LIMITS_H)
# include <limits.h>
#endif
#include <fcntl.h>
#include <pwd.h>
#include <stdio.h>
#include "rlstdc.h"
#include "rlshell.h"
#include "xmalloc.h"
#if !defined (HAVE_GETPW_DECLS)
extern struct passwd *getpwuid PARAMS((uid_t));
#endif /* !HAVE_GETPW_DECLS */
#ifndef NULL
# define NULL 0
#endif
#ifndef CHAR_BIT
# define CHAR_BIT 8
#endif
/* Nonzero if the integer type T is signed. */
#define TYPE_SIGNED(t) (! ((t) 0 < (t) -1))
/* Bound on length of the string representing an integer value of type T.
Subtract one for the sign bit if T is signed;
302 / 1000 is log10 (2) rounded up;
add one for integer division truncation;
add one more for a minus sign if t is signed. */
#define INT_STRLEN_BOUND(t) \
((sizeof (t) * CHAR_BIT - TYPE_SIGNED (t)) * 302 / 1000 \
+ 1 + TYPE_SIGNED (t))
/* All of these functions are resolved from bash if we are linking readline
as part of bash. */
/* Does shell-like quoting using single quotes. */
char *
sh_single_quote (string)
char *string;
{
register int c;
char *result, *r, *s;
result = (char *)xmalloc (3 + (4 * strlen (string)));
r = result;
*r++ = '\'';
for (s = string; s && (c = *s); s++)
{
*r++ = c;
if (c == '\'')
{
*r++ = '\\'; /* insert escaped single quote */
*r++ = '\'';
*r++ = '\''; /* start new quoted string */
}
}
*r++ = '\'';
*r = '\0';
return (result);
}
/* Set the environment variables LINES and COLUMNS to lines and cols,
respectively. */
void
sh_set_lines_and_columns (lines, cols)
int lines, cols;
{
char *b;
#if defined (HAVE_PUTENV)
b = (char *)xmalloc (INT_STRLEN_BOUND (int) + sizeof ("LINES=") + 1);
sprintf (b, "LINES=%d", lines);
putenv (b);
b = (char *)xmalloc (INT_STRLEN_BOUND (int) + sizeof ("COLUMNS=") + 1);
sprintf (b, "COLUMNS=%d", cols);
putenv (b);
#else /* !HAVE_PUTENV */
# if defined (HAVE_SETENV)
b = (char *)xmalloc (INT_STRLEN_BOUND (int) + 1);
sprintf (b, "%d", lines);
setenv ("LINES", b, 1);
b = (char *)xmalloc (INT_STRLEN_BOUND (int) + 1);
sprintf (b, "%d", cols);
setenv ("COLUMNS", b, 1);
# endif /* HAVE_SETENV */
#endif /* !HAVE_PUTENV */
}
char *
sh_get_env_value (varname)
const char *varname;
{
return ((char *)getenv (varname));
}
char *
sh_get_home_dir ()
{
char *home_dir;
struct passwd *entry;
home_dir = (char *)NULL;
entry = getpwuid (getuid ());
if (entry)
home_dir = entry->pw_dir;
return (home_dir);
}
#if !defined (O_NDELAY)
# if defined (FNDELAY)
# define O_NDELAY FNDELAY
# endif
#endif
int
sh_unset_nodelay_mode (fd)
int fd;
{
int flags, bflags;
if ((flags = fcntl (fd, F_GETFL, 0)) < 0)
return -1;
bflags = 0;
#ifdef O_NONBLOCK
bflags |= O_NONBLOCK;
#endif
#ifdef O_NDELAY
bflags |= O_NDELAY;
#endif
if (flags & bflags)
{
flags &= ~bflags;
return (fcntl (fd, F_SETFL, flags));
}
return 0;
}