X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=readline%2Fshell.c;h=346f8113d43d742191f34f431d55e94316e4431d;hb=b5057acde36b5a9a52e1505a29091ec17c0b6ac5;hp=8bc2fe9b4f99a7df48d84916aec472440d2ce2ae;hpb=d60d9f651ab04df95fcd31488fbb46be263382ae;p=deliverable%2Fbinutils-gdb.git

diff --git a/readline/shell.c b/readline/shell.c
index 8bc2fe9b4f..346f8113d4 100644
--- a/readline/shell.c
+++ b/readline/shell.c
@@ -8,7 +8,7 @@
 
    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 1, or
+   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
@@ -19,17 +19,16 @@
    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,
-   675 Mass Ave, Cambridge, MA 02139, USA. */
+   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>
+
 #if defined (HAVE_UNISTD_H)
-#  ifdef _MINIX
-#    include <sys/types.h>
-#  endif
 #  include <unistd.h>
 #endif /* HAVE_UNISTD_H */
 
@@ -45,34 +44,59 @@
 #  include <strings.h>
 #endif /* !HAVE_STRING_H */
 
-extern char *xmalloc (), *xrealloc ();
+#if defined (HAVE_LIMITS_H)
+#  include <limits.h>
+#endif
+
+#if defined (HAVE_FCNTL_H)
+#include <fcntl.h>
+#endif
+#if defined (HAVE_PWD_H)
+#include <pwd.h>
+#endif
 
-#if !defined (SHELL)
+#include <stdio.h>
 
-#ifdef savestring
-#undef savestring
+#include "rlstdc.h"
+#include "rlshell.h"
+#include "xmalloc.h"
+
+#if defined (HAVE_GETPWUID) && !defined (HAVE_GETPW_DECLS)
+extern struct passwd *getpwuid PARAMS((uid_t));
+#endif /* HAVE_GETPWUID && !HAVE_GETPW_DECLS */
+
+#ifndef NULL
+#  define NULL 0
 #endif
 
-/* Backwards compatibility, now that savestring has been removed from
-   all `public' readline header files. */
-#if 0
-char *
-savestring (s)
-     char *s;
-{
-  return ((char *)strcpy (xmalloc (1 + (int)strlen (s)), (s)));
-}
+#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 *
-single_quote (string)
+sh_single_quote (string)
      char *string;
 {
   register int c;
   char *result, *r, *s;
 
-  result = (char *)xmalloc (3 + (3 * strlen (string)));
+  result = (char *)xmalloc (3 + (4 * strlen (string)));
   r = result;
   *r++ = '\'';
 
@@ -97,44 +121,88 @@ single_quote (string)
 /* Set the environment variables LINES and COLUMNS to lines and cols,
    respectively. */
 void
-set_lines_and_columns (lines, cols)
+sh_set_lines_and_columns (lines, cols)
      int lines, cols;
 {
   char *b;
 
-#if defined (HAVE_PUTENV)
-  b = xmalloc (24);
-  sprintf (b, "LINES=%d", lines);
-  putenv (b);
-  b = xmalloc (24);
-  sprintf (b, "COLUMNS=%d", cols);
-  putenv (b);
-#else /* !HAVE_PUTENV */
-#  if defined (HAVE_SETENV)
-  b = xmalloc (8);
+#if defined (HAVE_SETENV)
+  b = (char *)xmalloc (INT_STRLEN_BOUND (int) + 1);
   sprintf (b, "%d", lines);
   setenv ("LINES", b, 1);
-  b = xmalloc (8);
+  free (b);
+
+  b = (char *)xmalloc (INT_STRLEN_BOUND (int) + 1);
   sprintf (b, "%d", cols);
   setenv ("COLUMNS", b, 1);
-#  endif /* HAVE_SETENV */
-#endif /* !HAVE_PUTENV */
+  free (b);
+#else /* !HAVE_SETENV */
+#  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);
+#  endif /* HAVE_PUTENV */
+#endif /* !HAVE_SETENV */
 }
 
 char *
-get_env_value (varname)
-     char *varname;
+sh_get_env_value (varname)
+     const char *varname;
 {
   return ((char *)getenv (varname));
 }
 
-#else /* SHELL */
-extern char *get_string_value ();
-
 char *
-get_env_value (varname)
-     char *varname;
+sh_get_home_dir ()
 {
-  return get_string_value (varname);
-}	
-#endif /* SHELL */
+  char *home_dir;
+  struct passwd *entry;
+
+  home_dir = (char *)NULL;
+#if defined (HAVE_GETPWUID)
+  entry = getpwuid (getuid ());
+  if (entry)
+    home_dir = entry->pw_dir;
+#endif
+  return (home_dir);
+}
+
+#if !defined (O_NDELAY)
+#  if defined (FNDELAY)
+#    define O_NDELAY FNDELAY
+#  endif
+#endif
+
+int
+sh_unset_nodelay_mode (fd)
+     int fd;
+{
+#if defined (HAVE_FCNTL)
+  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));
+    }
+#endif
+
+  return 0;
+}