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-rw-r--r--lib/tilde/shell.c79
1 files changed, 79 insertions, 0 deletions
diff --git a/lib/tilde/shell.c b/lib/tilde/shell.c
new file mode 100644
index 0000000..9805a92
--- /dev/null
+++ b/lib/tilde/shell.c
@@ -0,0 +1,79 @@
+/* shell.c -- tilde utility functions that are normally provided by
+ bash when readline is linked as part of the shell. */
+
+/* Copyright (C) 1998-2017 Free Software Foundation, Inc.
+
+ This file is part of the GNU Tilde Library.
+
+ The GNU Tilde 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 3 of the License, or
+ (at your option) any later version.
+
+ The GNU Tilde 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.
+
+ You should have received a copy of the GNU General Public License
+ along with the GNU Tilde Library. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#if defined (HAVE_CONFIG_H)
+# include <config.h>
+#endif
+
+#if defined (HAVE_UNISTD_H)
+# ifdef _MINIX
+# include <sys/types.h>
+# endif
+# 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 */
+
+char *
+get_env_value (char *varname)
+{
+ return ((char *)getenv (varname));
+}
+
+/* If we're not using $HOME, assume that the passwd file information won't
+ change while this shell instance is running. */
+char *
+get_home_dir (void)
+{
+ static char *home_dir = (char *)NULL;
+ struct passwd *entry;
+
+ if (home_dir)
+ return (home_dir);
+
+#if defined (HAVE_GETPWUID)
+ entry = getpwuid (getuid ());
+ if (entry)
+ home_dir = savestring (entry->pw_dir);
+#endif
+
+#if defined (HAVE_GETPWENT)
+ endpwent (); /* some systems need this */
+#endif
+
+ return (home_dir);
+}