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bb70624e JA |
1 | /* pcomplib.c - library functions for programmable completion. */ |
2 | ||
a61ffa78 | 3 | /* Copyright (C) 1999-2022 Free Software Foundation, Inc. |
bb70624e JA |
4 | |
5 | This file is part of GNU Bash, the Bourne Again SHell. | |
6 | ||
2e4498b3 CR |
7 | Bash is free software: you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation, either version 3 of the License, or | |
10 | (at your option) any later version. | |
bb70624e | 11 | |
2e4498b3 CR |
12 | Bash is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
bb70624e | 16 | |
2e4498b3 CR |
17 | You should have received a copy of the GNU General Public License |
18 | along with Bash. If not, see <http://www.gnu.org/licenses/>. | |
19 | */ | |
bb70624e JA |
20 | |
21 | #include <config.h> | |
22 | ||
23 | #if defined (PROGRAMMABLE_COMPLETION) | |
24 | ||
25 | #include "bashansi.h" | |
26 | #include <stdio.h> | |
27 | ||
28 | #if defined (HAVE_UNISTD_H) | |
29 | # ifdef _MINIX | |
30 | # include <sys/types.h> | |
31 | # endif | |
32 | # include <unistd.h> | |
33 | #endif | |
34 | ||
5e13499c CR |
35 | #include "bashintl.h" |
36 | ||
bb70624e JA |
37 | #include "shell.h" |
38 | #include "pcomplete.h" | |
39 | ||
1fff64ac | 40 | #define COMPLETE_HASH_BUCKETS 512 /* must be power of two */ |
bb70624e JA |
41 | |
42 | #define STRDUP(x) ((x) ? savestring (x) : (char *)NULL) | |
43 | ||
44 | HASH_TABLE *prog_completes = (HASH_TABLE *)NULL; | |
45 | ||
a61ffa78 | 46 | static void free_progcomp (PTR_T); |
f73dda09 | 47 | |
bb70624e | 48 | COMPSPEC * |
a61ffa78 | 49 | compspec_create (void) |
bb70624e JA |
50 | { |
51 | COMPSPEC *ret; | |
52 | ||
53 | ret = (COMPSPEC *)xmalloc (sizeof (COMPSPEC)); | |
54 | ret->refcount = 0; | |
55 | ||
56 | ret->actions = (unsigned long)0; | |
28ef6c31 | 57 | ret->options = (unsigned long)0; |
bb70624e JA |
58 | |
59 | ret->globpat = (char *)NULL; | |
60 | ret->words = (char *)NULL; | |
61 | ret->prefix = (char *)NULL; | |
62 | ret->suffix = (char *)NULL; | |
63 | ret->funcname = (char *)NULL; | |
64 | ret->command = (char *)NULL; | |
e054386f | 65 | ret->lcommand = (char *)NULL; |
bb70624e JA |
66 | ret->filterpat = (char *)NULL; |
67 | ||
68 | return ret; | |
69 | } | |
70 | ||
71 | void | |
a61ffa78 | 72 | compspec_dispose (COMPSPEC *cs) |
bb70624e JA |
73 | { |
74 | cs->refcount--; | |
75 | if (cs->refcount == 0) | |
76 | { | |
77 | FREE (cs->globpat); | |
78 | FREE (cs->words); | |
79 | FREE (cs->prefix); | |
80 | FREE (cs->suffix); | |
81 | FREE (cs->funcname); | |
82 | FREE (cs->command); | |
e054386f | 83 | FREE (cs->lcommand); |
bb70624e JA |
84 | FREE (cs->filterpat); |
85 | ||
86 | free (cs); | |
87 | } | |
88 | } | |
89 | ||
90 | COMPSPEC * | |
a61ffa78 | 91 | compspec_copy (COMPSPEC *cs) |
bb70624e JA |
92 | { |
93 | COMPSPEC *new; | |
94 | ||
95 | new = (COMPSPEC *)xmalloc (sizeof (COMPSPEC)); | |
96 | ||
bce12dd7 | 97 | new->refcount = 1; /* was cs->refcount, but this is a fresh copy */ |
bb70624e | 98 | new->actions = cs->actions; |
28ef6c31 | 99 | new->options = cs->options; |
bb70624e JA |
100 | |
101 | new->globpat = STRDUP (cs->globpat); | |
102 | new->words = STRDUP (cs->words); | |
103 | new->prefix = STRDUP (cs->prefix); | |
104 | new->suffix = STRDUP (cs->suffix); | |
105 | new->funcname = STRDUP (cs->funcname); | |
106 | new->command = STRDUP (cs->command); | |
e054386f | 107 | new->lcommand = STRDUP (cs->lcommand); |
bb70624e JA |
108 | new->filterpat = STRDUP (cs->filterpat); |
109 | ||
110 | return new; | |
111 | } | |
112 | ||
113 | void | |
a61ffa78 | 114 | progcomp_create (void) |
bb70624e | 115 | { |
7117c2d2 JA |
116 | if (prog_completes == 0) |
117 | prog_completes = hash_create (COMPLETE_HASH_BUCKETS); | |
bb70624e JA |
118 | } |
119 | ||
120 | int | |
a61ffa78 | 121 | progcomp_size (void) |
bb70624e | 122 | { |
7117c2d2 | 123 | return (HASH_ENTRIES (prog_completes)); |
bb70624e JA |
124 | } |
125 | ||
126 | static void | |
a61ffa78 | 127 | free_progcomp (PTR_T data) |
bb70624e JA |
128 | { |
129 | COMPSPEC *cs; | |
130 | ||
131 | cs = (COMPSPEC *)data; | |
7117c2d2 | 132 | compspec_dispose (cs); |
bb70624e JA |
133 | } |
134 | ||
135 | void | |
a61ffa78 | 136 | progcomp_flush (void) |
7117c2d2 JA |
137 | { |
138 | if (prog_completes) | |
139 | hash_flush (prog_completes, free_progcomp); | |
140 | } | |
141 | ||
142 | void | |
a61ffa78 | 143 | progcomp_dispose (void) |
bb70624e JA |
144 | { |
145 | if (prog_completes) | |
7117c2d2 JA |
146 | hash_dispose (prog_completes); |
147 | prog_completes = (HASH_TABLE *)NULL; | |
bb70624e JA |
148 | } |
149 | ||
150 | int | |
a61ffa78 | 151 | progcomp_remove (const char *cmd) |
bb70624e JA |
152 | { |
153 | register BUCKET_CONTENTS *item; | |
154 | ||
155 | if (prog_completes == 0) | |
156 | return 1; | |
157 | ||
7117c2d2 | 158 | item = hash_remove (cmd, prog_completes, 0); |
bb70624e JA |
159 | if (item) |
160 | { | |
7117c2d2 JA |
161 | if (item->data) |
162 | free_progcomp (item->data); | |
bb70624e JA |
163 | free (item->key); |
164 | free (item); | |
165 | return (1); | |
166 | } | |
167 | return (0); | |
168 | } | |
169 | ||
170 | int | |
a61ffa78 | 171 | progcomp_insert (char *cmd, COMPSPEC *cs) |
bb70624e JA |
172 | { |
173 | register BUCKET_CONTENTS *item; | |
174 | ||
bb70624e | 175 | if (cs == NULL) |
5e13499c | 176 | programming_error (_("progcomp_insert: %s: NULL COMPSPEC"), cmd); |
7117c2d2 JA |
177 | |
178 | if (prog_completes == 0) | |
179 | progcomp_create (); | |
bb70624e | 180 | |
d3a24ed2 | 181 | cs->refcount++; |
7117c2d2 | 182 | item = hash_insert (cmd, prog_completes, 0); |
bb70624e JA |
183 | if (item->data) |
184 | free_progcomp (item->data); | |
185 | else | |
186 | item->key = savestring (cmd); | |
7117c2d2 | 187 | item->data = cs; |
d3a24ed2 | 188 | |
bb70624e JA |
189 | return 1; |
190 | } | |
191 | ||
192 | COMPSPEC * | |
a61ffa78 | 193 | progcomp_search (const char *cmd) |
bb70624e JA |
194 | { |
195 | register BUCKET_CONTENTS *item; | |
196 | COMPSPEC *cs; | |
197 | ||
198 | if (prog_completes == 0) | |
199 | return ((COMPSPEC *)NULL); | |
200 | ||
7117c2d2 | 201 | item = hash_search (cmd, prog_completes, 0); |
bb70624e JA |
202 | |
203 | if (item == NULL) | |
204 | return ((COMPSPEC *)NULL); | |
205 | ||
206 | cs = (COMPSPEC *)item->data; | |
207 | ||
208 | return (cs); | |
209 | } | |
210 | ||
211 | void | |
a61ffa78 | 212 | progcomp_walk (hash_wfunc *pfunc) |
bb70624e | 213 | { |
7117c2d2 | 214 | if (prog_completes == 0 || pfunc == 0 || HASH_ENTRIES (prog_completes) == 0) |
bb70624e JA |
215 | return; |
216 | ||
7117c2d2 | 217 | hash_walk (prog_completes, pfunc); |
bb70624e JA |
218 | } |
219 | ||
220 | #endif /* PROGRAMMABLE_COMPLETION */ |