1 files changed, 66 insertions, 0 deletions
diff --git a/array.h b/array.h
new file mode 100644
index 0000000..15e2a56
--- /dev/null
+++ b/array.h
@@ -0,0 +1,66 @@
+/* array.h -- definitions for the interface exported by array.c that allows
+   the rest of the shell to manipulate array variables. */
+#ifndef _ARRAY_H_
+#define _ARRAY_H_
+
+#include "stdc.h"
+
+typedef int	arrayind_t;
+
+enum atype {array_indexed, array_assoc};
+
+typedef struct array {
+	enum atype	type;
+	arrayind_t	max_index, num_elements, max_size;
+	struct array_element *head;
+} ARRAY;
+
+typedef struct array_element {
+	arrayind_t	ind;
+	char	*value;
+	struct array_element *next, *prev;
+} ARRAY_ELEMENT;
+
+char	*array_reference __P((ARRAY *, arrayind_t));
+
+extern int	array_add_element __P((ARRAY *, arrayind_t, char *));
+extern ARRAY_ELEMENT *array_delete_element __P((ARRAY *, arrayind_t));
+
+extern ARRAY_ELEMENT *new_array_element __P((arrayind_t, char *));
+extern void	destroy_array_element __P((ARRAY_ELEMENT *));
+
+extern ARRAY	*new_array __P((void));
+extern void	empty_array __P((ARRAY *));
+extern void	dispose_array __P((ARRAY *));
+extern ARRAY	*dup_array __P((ARRAY *));
+extern ARRAY	*dup_array_subrange __P((ARRAY *, ARRAY_ELEMENT *, ARRAY_ELEMENT *));
+extern ARRAY_ELEMENT *new_array_element __P((arrayind_t, char *));
+extern ARRAY_ELEMENT *copy_array_element __P((ARRAY_ELEMENT *));
+
+extern WORD_LIST *array_to_word_list __P((ARRAY *));
+extern ARRAY *word_list_to_array __P((WORD_LIST *));
+extern ARRAY *assign_word_list __P((ARRAY *, WORD_LIST *));
+
+extern char *array_to_assignment_string __P((ARRAY *));
+extern char *quoted_array_assignment_string __P((ARRAY *));
+extern char *array_to_string __P((ARRAY *, char *, int));
+extern ARRAY *string_to_array __P((char *, char *));
+
+extern char *array_subrange __P((ARRAY *, int, int, int));
+extern char *array_pat_subst __P((ARRAY *, char *, char *, int));
+
+extern ARRAY *array_quote __P((ARRAY *));
+
+#define array_num_elements(a)	((a)->num_elements)
+#define array_max_index(a)	((a)->max_index)
+#define array_head(a)		((a)->head)
+#define array_empty(a)		((a)->num_elements == 0)
+
+#define element_value(ae)	((ae)->value)
+#define element_index(ae)	((ae)->ind)
+#define element_forw(ae)	((ae)->next)
+#define element_back(ae)	((ae)->prev)
+
+#define ALL_ELEMENT_SUB(c)	((c) == '@' || (c) == '*')
+
+#endif /* _ARRAY_H_ */