1 files changed, 133 insertions, 0 deletions
diff --git a/readline/shell.c b/readline/shell.c
new file mode 100644
index 00000000000..091ec08f645
--- /dev/null
+++ b/readline/shell.c
@@ -0,0 +1,133 @@
+/* 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 1, 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,
+   675 Mass Ave, Cambridge, MA 02139, USA. */
+#define READLINE_LIBRARY
+
+#if defined (HAVE_CONFIG_H)
+#  include <config.h>
+#endif
+
+#include <sys/types.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 */
+
+#include <pwd.h>
+
+#if !defined (HAVE_GETPW_DECLS)
+extern struct passwd *getpwuid ();
+#endif /* !HAVE_GETPW_DECLS */
+
+extern char *xmalloc ();
+
+/* 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)
+     char *string;
+{
+  register int c;
+  char *result, *r, *s;
+
+  result = (char *)xmalloc (3 + (3 * 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
+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);
+  sprintf (b, "%d", lines);
+  setenv ("LINES", b, 1);
+  b = xmalloc (8);
+  sprintf (b, "%d", cols);
+  setenv ("COLUMNS", b, 1);
+#  endif /* HAVE_SETENV */
+#endif /* !HAVE_PUTENV */
+}
+
+char *
+get_env_value (varname)
+     char *varname;
+{
+  return ((char *)getenv (varname));
+}
+
+char *
+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);
+}