Imported from ../bash-2.0.tar.gz.

1 files changed, 62 insertions, 0 deletions

diff --git a/hashlib.h b/hashlib.h
new file mode 100644
index 00000000..95a9164b
--- /dev/null
+++ b/hashlib.h
@@ -0,0 +1,62 @@
+/* hashlib.h -- the data structures used in hashing in Bash. */
+
+/* Copyright (C) 1993 Free Software Foundation, Inc.
+
+   This file is part of GNU Bash, the Bourne Again SHell.
+
+   Bash 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.
+
+   Bash 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 Bash; see the file COPYING.  If not, write to the Free Software
+   Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#if !defined (_HASHLIB_H_)
+#define _HASHLIB_H_
+
+typedef struct bucket_contents {
+  struct bucket_contents *next;	/* Link to next hashed key in this bucket. */
+  char *key;			/* What we look up. */
+  char *data;			/* What we really want. */
+  int times_found;		/* Number of times this item has been found. */
+} BUCKET_CONTENTS;
+
+typedef struct hash_table {
+  BUCKET_CONTENTS **bucket_array;	/* Where the data is kept. */
+  int nbuckets;			/* How many buckets does this table have. */
+  int nentries;			/* How many entries does this table have. */
+} HASH_TABLE;
+
+extern int hash_string ();
+extern HASH_TABLE *make_hash_table ();
+extern BUCKET_CONTENTS *find_hash_item ();
+extern BUCKET_CONTENTS *remove_hash_item ();
+extern BUCKET_CONTENTS *add_hash_item ();
+extern BUCKET_CONTENTS *get_hash_bucket ();
+extern void flush_hash_table ();
+
+/* Redefine the function as a macro for speed. */
+#define get_hash_bucket(bucket, table) \
+	((table && (bucket < table->nbuckets)) ?  \
+		table->bucket_array[bucket] : \
+		(BUCKET_CONTENTS *)NULL)
+
+/* Default number of buckets in the hash table. */
+#define DEFAULT_HASH_BUCKETS 107
+
+#if !defined (NULL)
+#  if defined (__STDC__)
+#    define NULL ((void *) 0)
+#  else
+#    define NULL 0x0
+#  endif /* !__STDC__ */
+#endif /* !NULL */
+
+#endif /* _HASHLIB_H */