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1/* array.h -- definitions for the interface exported by array.c that allows
2 the rest of the shell to manipulate array variables. */
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3
4/* Copyright (C) 1997 Free Software Foundation, Inc.
5
6 This file is part of GNU Bash, the Bourne Again SHell.
7
8 Bash is free software; you can redistribute it and/or modify it under
9 the terms of the GNU General Public License as published by the Free
10 Software Foundation; either version 2, or (at your option) any later
11 version.
12
13 Bash is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 for more details.
17
18 You should have received a copy of the GNU General Public License along
19 with Bash; see the file COPYING. If not, write to the Free Software
20 Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
21
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22#ifndef _ARRAY_H_
23#define _ARRAY_H_
24
25#include "stdc.h"
26
7117c2d2 27typedef intmax_t arrayind_t;
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28
29enum atype {array_indexed, array_assoc};
30
31typedef struct array {
32 enum atype type;
7117c2d2 33 arrayind_t max_index, num_elements;
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34 struct array_element *head;
35} ARRAY;
36
37typedef struct array_element {
38 arrayind_t ind;
39 char *value;
40 struct array_element *next, *prev;
41} ARRAY_ELEMENT;
42
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43typedef int sh_ae_map_func_t __P((ARRAY_ELEMENT *));
44
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45/* Basic operations on entire arrays */
46extern ARRAY *array_create __P((void));
47extern void array_flush __P((ARRAY *));
48extern void array_dispose __P((ARRAY *));
49extern ARRAY *array_copy __P((ARRAY *));
50extern ARRAY *array_slice __P((ARRAY *, ARRAY_ELEMENT *, ARRAY_ELEMENT *));
51extern void array_walk __P((ARRAY *, sh_ae_map_func_t *));
ccc6cda3 52
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53extern ARRAY_ELEMENT *array_shift __P((ARRAY *, int, int));
54extern int array_rshift __P((ARRAY *, int, char *));
55extern ARRAY *array_quote __P((ARRAY *));
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57extern char *array_subrange __P((ARRAY *, arrayind_t, arrayind_t, int));
58extern char *array_patsub __P((ARRAY *, char *, char *, int));
ccc6cda3 59
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60/* Basic operations on array elements. */
61extern ARRAY_ELEMENT *array_create_element __P((arrayind_t, char *));
62extern ARRAY_ELEMENT *array_copy_element __P((ARRAY_ELEMENT *));
63extern void array_dispose_element __P((ARRAY_ELEMENT *));
ccc6cda3 64
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65extern int array_insert __P((ARRAY *, arrayind_t, char *));
66extern ARRAY_ELEMENT *array_remove __P((ARRAY *, arrayind_t));
67extern char *array_reference __P((ARRAY *, arrayind_t));
68
69/* Converting to and from arrays */
ccc6cda3 70extern WORD_LIST *array_to_word_list __P((ARRAY *));
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71extern ARRAY *array_from_word_list __P((WORD_LIST *));
72extern ARRAY *array_assign_list __P((ARRAY *, WORD_LIST *));
ccc6cda3 73
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74extern char **array_to_argv __P((ARRAY *));
75
7117c2d2 76extern char *array_to_assign __P((ARRAY *, int));
ccc6cda3 77extern char *array_to_string __P((ARRAY *, char *, int));
7117c2d2 78extern ARRAY *array_from_string __P((char *, char *));
ccc6cda3 79
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80/* Flags for array_shift */
81#define AS_DISPOSE 0x01
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82
83#define array_num_elements(a) ((a)->num_elements)
84#define array_max_index(a) ((a)->max_index)
85#define array_head(a) ((a)->head)
86#define array_empty(a) ((a)->num_elements == 0)
87
88#define element_value(ae) ((ae)->value)
89#define element_index(ae) ((ae)->ind)
90#define element_forw(ae) ((ae)->next)
91#define element_back(ae) ((ae)->prev)
92
93#define ALL_ELEMENT_SUB(c) ((c) == '@' || (c) == '*')
94
95#endif /* _ARRAY_H_ */