diff options
author | David Walter Seikel | 2012-01-04 18:41:13 +1000 |
---|---|---|
committer | David Walter Seikel | 2012-01-04 18:41:13 +1000 |
commit | dd7595a3475407a7fa96a97393bae8c5220e8762 (patch) | |
tree | e341e911d7eb911a51684a7412ef7f7c7605d28e /libraries/eina/src/lib/eina_xattr.c | |
parent | Add the skeleton. (diff) | |
download | SledjHamr-dd7595a3475407a7fa96a97393bae8c5220e8762.zip SledjHamr-dd7595a3475407a7fa96a97393bae8c5220e8762.tar.gz SledjHamr-dd7595a3475407a7fa96a97393bae8c5220e8762.tar.bz2 SledjHamr-dd7595a3475407a7fa96a97393bae8c5220e8762.tar.xz |
Add the base Enlightenment Foundation Libraries - eina, eet, evas, ecore, embryo, and edje.
Note that embryo wont be used, but I'm not sure yet if you can build edje without it.
Diffstat (limited to 'libraries/eina/src/lib/eina_xattr.c')
-rw-r--r-- | libraries/eina/src/lib/eina_xattr.c | 292 |
1 files changed, 292 insertions, 0 deletions
diff --git a/libraries/eina/src/lib/eina_xattr.c b/libraries/eina/src/lib/eina_xattr.c new file mode 100644 index 0000000..bd5b98e --- /dev/null +++ b/libraries/eina/src/lib/eina_xattr.c | |||
@@ -0,0 +1,292 @@ | |||
1 | /* EINA - EFL data type library | ||
2 | * Copyright (C) 2011 Cedric Bail | ||
3 | * | ||
4 | * This library is free software; you can redistribute it and/or | ||
5 | * modify it under the terms of the GNU Lesser General Public | ||
6 | * License as published by the Free Software Foundation; either | ||
7 | * version 2.1 of the License, or (at your option) any later version. | ||
8 | * | ||
9 | * This library is distributed in the hope that it will be useful, | ||
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
12 | * Lesser General Public License for more details. | ||
13 | * | ||
14 | * You should have received a copy of the GNU Lesser General Public | ||
15 | * License along with this library; | ||
16 | * if not, see <http://www.gnu.org/licenses/>. | ||
17 | */ | ||
18 | |||
19 | #ifdef HAVE_CONFIG_H | ||
20 | # include "config.h" | ||
21 | #endif | ||
22 | |||
23 | #include <sys/types.h> | ||
24 | #include <string.h> | ||
25 | #include <math.h> | ||
26 | |||
27 | #ifdef HAVE_XATTR | ||
28 | # include <sys/xattr.h> | ||
29 | #endif | ||
30 | |||
31 | #include "eina_config.h" | ||
32 | #include "eina_private.h" | ||
33 | |||
34 | #include "eina_safety_checks.h" | ||
35 | #include "eina_xattr.h" | ||
36 | #include "eina_convert.h" | ||
37 | |||
38 | /*============================================================================* | ||
39 | * Local * | ||
40 | *============================================================================*/ | ||
41 | |||
42 | /** | ||
43 | * @cond LOCAL | ||
44 | */ | ||
45 | |||
46 | typedef struct _Eina_Xattr_Iterator Eina_Xattr_Iterator; | ||
47 | |||
48 | struct _Eina_Xattr_Iterator | ||
49 | { | ||
50 | Eina_Iterator iterator; | ||
51 | |||
52 | ssize_t length; | ||
53 | ssize_t offset; | ||
54 | |||
55 | char xattr[1]; | ||
56 | }; | ||
57 | |||
58 | #ifdef HAVE_XATTR | ||
59 | static Eina_Bool | ||
60 | _eina_xattr_ls_iterator_next(Eina_Xattr_Iterator *it, void **data) | ||
61 | { | ||
62 | if (it->offset >= it->length) | ||
63 | return EINA_FALSE; | ||
64 | |||
65 | *data = it->xattr + it->offset; | ||
66 | it->offset += strlen(it->xattr + it->offset) + 1; | ||
67 | |||
68 | return EINA_TRUE; | ||
69 | } | ||
70 | |||
71 | static void * | ||
72 | _eina_xattr_ls_iterator_container(Eina_Xattr_Iterator *it __UNUSED__) | ||
73 | { | ||
74 | return NULL; | ||
75 | } | ||
76 | |||
77 | static void | ||
78 | _eina_xattr_ls_iterator_free(Eina_Xattr_Iterator *it) | ||
79 | { | ||
80 | EINA_MAGIC_SET(&it->iterator, 0); | ||
81 | free(it); | ||
82 | } | ||
83 | #endif | ||
84 | |||
85 | /** | ||
86 | * @endcond | ||
87 | */ | ||
88 | |||
89 | |||
90 | /*============================================================================* | ||
91 | * Global * | ||
92 | *============================================================================*/ | ||
93 | |||
94 | |||
95 | /*============================================================================* | ||
96 | * API * | ||
97 | *============================================================================*/ | ||
98 | |||
99 | |||
100 | EAPI Eina_Iterator * | ||
101 | eina_xattr_ls(const char *file) | ||
102 | { | ||
103 | #ifdef HAVE_XATTR | ||
104 | Eina_Xattr_Iterator *it; | ||
105 | ssize_t length; | ||
106 | |||
107 | EINA_SAFETY_ON_NULL_RETURN_VAL(file, NULL); | ||
108 | |||
109 | length = listxattr(file, NULL, 0); | ||
110 | if (length <= 0) return NULL; | ||
111 | |||
112 | it = calloc(1, sizeof (Eina_Xattr_Iterator) + length - 1); | ||
113 | if (!it) return NULL; | ||
114 | |||
115 | EINA_MAGIC_SET(&it->iterator, EINA_MAGIC_ITERATOR); | ||
116 | |||
117 | it->length = listxattr(file, it->xattr, length); | ||
118 | if (it->length != length) | ||
119 | { | ||
120 | free(it); | ||
121 | return NULL; | ||
122 | } | ||
123 | |||
124 | it->iterator.version = EINA_ITERATOR_VERSION; | ||
125 | it->iterator.next = FUNC_ITERATOR_NEXT(_eina_xattr_ls_iterator_next); | ||
126 | it->iterator.get_container = FUNC_ITERATOR_GET_CONTAINER(_eina_xattr_ls_iterator_container); | ||
127 | it->iterator.free = FUNC_ITERATOR_FREE(_eina_xattr_ls_iterator_free); | ||
128 | |||
129 | return &it->iterator; | ||
130 | #else | ||
131 | return NULL; | ||
132 | (void)file; | ||
133 | #endif | ||
134 | } | ||
135 | |||
136 | EAPI void * | ||
137 | eina_xattr_get(const char *file, const char *attribute, ssize_t *size) | ||
138 | { | ||
139 | #ifdef HAVE_XATTR | ||
140 | void *ret = NULL; | ||
141 | ssize_t tmp; | ||
142 | |||
143 | EINA_SAFETY_ON_NULL_RETURN_VAL(file, NULL); | ||
144 | EINA_SAFETY_ON_NULL_RETURN_VAL(attribute, NULL); | ||
145 | EINA_SAFETY_ON_TRUE_RETURN_VAL(!size, NULL); | ||
146 | |||
147 | *size = getxattr(file, attribute, NULL, 0); | ||
148 | /* Size should be less than 2MB (already huge in my opinion) */ | ||
149 | if (!(*size > 0 && *size < 2 * 1024 * 1024)) | ||
150 | goto on_error; | ||
151 | |||
152 | ret = malloc(*size); | ||
153 | if (!ret) return NULL; | ||
154 | |||
155 | tmp = getxattr(file, attribute, ret, *size); | ||
156 | if (tmp != *size) | ||
157 | goto on_error; | ||
158 | |||
159 | return ret; | ||
160 | |||
161 | on_error: | ||
162 | free(ret); | ||
163 | *size = 0; | ||
164 | return NULL; | ||
165 | #else | ||
166 | EINA_SAFETY_ON_TRUE_RETURN_VAL(!size, NULL); | ||
167 | *size = 0; | ||
168 | return NULL; | ||
169 | (void)file; | ||
170 | (void)attribute; | ||
171 | #endif | ||
172 | } | ||
173 | |||
174 | EAPI Eina_Bool | ||
175 | eina_xattr_set(const char *file, const char *attribute, const void *data, ssize_t length, Eina_Xattr_Flags flags) | ||
176 | { | ||
177 | #ifdef HAVE_XATTR | ||
178 | int iflags; | ||
179 | |||
180 | EINA_SAFETY_ON_NULL_RETURN_VAL(file, EINA_FALSE); | ||
181 | EINA_SAFETY_ON_NULL_RETURN_VAL(attribute, EINA_FALSE); | ||
182 | EINA_SAFETY_ON_NULL_RETURN_VAL(data, EINA_FALSE); | ||
183 | EINA_SAFETY_ON_TRUE_RETURN_VAL(!(length > 0 && length < 2 * 1024 * 1024), EINA_FALSE); | ||
184 | |||
185 | switch (flags) | ||
186 | { | ||
187 | case EINA_XATTR_INSERT: iflags = 0; break; | ||
188 | case EINA_XATTR_REPLACE: iflags = XATTR_REPLACE; break; | ||
189 | case EINA_XATTR_CREATED: iflags = XATTR_CREATE; break; | ||
190 | default: | ||
191 | return EINA_FALSE; | ||
192 | } | ||
193 | |||
194 | if (setxattr(file, attribute, data, length, iflags)) | ||
195 | return EINA_FALSE; | ||
196 | return EINA_TRUE; | ||
197 | #else | ||
198 | return EINA_FALSE; | ||
199 | (void)file; | ||
200 | (void)attribute; | ||
201 | (void)data; | ||
202 | (void)length; | ||
203 | (void)flags; | ||
204 | #endif | ||
205 | } | ||
206 | |||
207 | EAPI Eina_Bool | ||
208 | eina_xattr_string_set(const char *file, const char *attribute, const char *data, Eina_Xattr_Flags flags) | ||
209 | { | ||
210 | EINA_SAFETY_ON_NULL_RETURN_VAL(data, EINA_FALSE); | ||
211 | |||
212 | return eina_xattr_set(file, attribute, data, strlen(data) + 1, flags); | ||
213 | } | ||
214 | |||
215 | EAPI char * | ||
216 | eina_xattr_string_get(const char *file, const char *attribute) | ||
217 | { | ||
218 | char *tmp; | ||
219 | ssize_t size; | ||
220 | |||
221 | tmp = eina_xattr_get(file, attribute, &size); | ||
222 | if (!tmp) return NULL; | ||
223 | |||
224 | if (tmp[size - 1] != '\0') | ||
225 | { | ||
226 | free(tmp); | ||
227 | return NULL; | ||
228 | } | ||
229 | |||
230 | return tmp; | ||
231 | } | ||
232 | |||
233 | EAPI Eina_Bool | ||
234 | eina_xattr_double_set(const char *file, const char *attribute, double value, Eina_Xattr_Flags flags) | ||
235 | { | ||
236 | char buffer[128]; | ||
237 | |||
238 | eina_convert_dtoa(value, buffer); | ||
239 | return eina_xattr_string_set(file, attribute, buffer, flags); | ||
240 | } | ||
241 | |||
242 | EAPI Eina_Bool | ||
243 | eina_xattr_double_get(const char *file, const char *attribute, double *value) | ||
244 | { | ||
245 | char *tmp; | ||
246 | long long int m = 0; | ||
247 | long int e = 0; | ||
248 | |||
249 | EINA_SAFETY_ON_NULL_RETURN_VAL(value, EINA_FALSE); | ||
250 | |||
251 | tmp = eina_xattr_string_get(file, attribute); | ||
252 | if (!tmp) return EINA_FALSE; | ||
253 | |||
254 | if (!eina_convert_atod(tmp, strlen(tmp), &m, &e)) | ||
255 | { | ||
256 | free(tmp); | ||
257 | return EINA_FALSE; | ||
258 | } | ||
259 | |||
260 | *value = ldexp((double)m, e); | ||
261 | free(tmp); | ||
262 | |||
263 | return EINA_TRUE; | ||
264 | } | ||
265 | |||
266 | EAPI Eina_Bool | ||
267 | eina_xattr_int_set(const char *file, const char *attribute, int value, Eina_Xattr_Flags flags) | ||
268 | { | ||
269 | char buffer[10]; | ||
270 | |||
271 | eina_convert_itoa(value, buffer); | ||
272 | return eina_xattr_string_set(file, attribute, buffer, flags); | ||
273 | } | ||
274 | |||
275 | EAPI Eina_Bool | ||
276 | eina_xattr_int_get(const char *file, const char *attribute, int *value) | ||
277 | { | ||
278 | char *tmp; | ||
279 | char *eos; | ||
280 | Eina_Bool result; | ||
281 | |||
282 | EINA_SAFETY_ON_NULL_RETURN_VAL(value, EINA_FALSE); | ||
283 | |||
284 | tmp = eina_xattr_string_get(file, attribute); | ||
285 | if (!tmp) return EINA_FALSE; | ||
286 | |||
287 | *value = (int) strtol(tmp, &eos, 10); | ||
288 | result = (*eos == '\0'); | ||
289 | free(tmp); | ||
290 | |||
291 | return result; | ||
292 | } | ||