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Diffstat (limited to 'array.h')
| -rw-r--r-- | array.h | 111 |
1 files changed, 111 insertions, 0 deletions
@@ -0,0 +1,111 @@ +/* array.h -- definitions for the interface exported by array.c that allows + the rest of the shell to manipulate array variables. */ + +/* Copyright (C) 1997 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, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */ + +#ifndef _ARRAY_H_ +#define _ARRAY_H_ + +#include "stdc.h" + +typedef intmax_t arrayind_t; + +enum atype {array_indexed, array_assoc}; + +typedef struct array { + enum atype type; + arrayind_t max_index, num_elements; + struct array_element *head; +} ARRAY; + +typedef struct array_element { + arrayind_t ind; + char *value; + struct array_element *next, *prev; +} ARRAY_ELEMENT; + +typedef int sh_ae_map_func_t __P((ARRAY_ELEMENT *, void *)); + +/* Basic operations on entire arrays */ +extern ARRAY *array_create __P((void)); +extern void array_flush __P((ARRAY *)); +extern void array_dispose __P((ARRAY *)); +extern ARRAY *array_copy __P((ARRAY *)); +extern ARRAY *array_slice __P((ARRAY *, ARRAY_ELEMENT *, ARRAY_ELEMENT *)); +extern void array_walk __P((ARRAY *, sh_ae_map_func_t *, void *)); + +extern ARRAY_ELEMENT *array_shift __P((ARRAY *, int, int)); +extern int array_rshift __P((ARRAY *, int, char *)); +extern ARRAY_ELEMENT *array_unshift_element __P((ARRAY *)); +extern int array_shift_element __P((ARRAY *, char *)); +extern ARRAY *array_quote __P((ARRAY *)); + +extern char *array_subrange __P((ARRAY *, arrayind_t, arrayind_t, int, int)); +extern char *array_patsub __P((ARRAY *, char *, char *, int)); + +/* Basic operations on array elements. */ +extern ARRAY_ELEMENT *array_create_element __P((arrayind_t, char *)); +extern ARRAY_ELEMENT *array_copy_element __P((ARRAY_ELEMENT *)); +extern void array_dispose_element __P((ARRAY_ELEMENT *)); + +extern int array_insert __P((ARRAY *, arrayind_t, char *)); +extern ARRAY_ELEMENT *array_remove __P((ARRAY *, arrayind_t)); +extern char *array_reference __P((ARRAY *, arrayind_t)); + +/* Converting to and from arrays */ +extern WORD_LIST *array_to_word_list __P((ARRAY *)); +extern ARRAY *array_from_word_list __P((WORD_LIST *)); +extern WORD_LIST *array_keys_to_word_list __P((ARRAY *)); + +extern ARRAY *array_assign_list __P((ARRAY *, WORD_LIST *)); + +extern char **array_to_argv __P((ARRAY *)); + +extern char *array_to_assign __P((ARRAY *, int)); +extern char *array_to_string __P((ARRAY *, char *, int)); +extern ARRAY *array_from_string __P((char *, char *)); + +/* Flags for array_shift */ +#define AS_DISPOSE 0x01 + +#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) + +/* Convenience */ +#define array_push(a,v) \ + do { array_rshift ((a), 1, (v)); } while (0) +#define array_pop(a) \ + do { array_dispose_element (array_shift ((a), 1, 0)); } while (0) + +#define GET_ARRAY_FROM_VAR(n, v, a) \ + do { \ + (v) = find_variable (n); \ + (a) = ((v) && array_p ((v))) ? array_cell (v) : (ARRAY *)0; \ + } while (0) + +#define ALL_ELEMENT_SUB(c) ((c) == '@' || (c) == '*') + +#endif /* _ARRAY_H_ */ |