1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
|
/*-
* BSD LICENSE
*
* Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __INCLUDE_RTE_CFGFILE_H__
#define __INCLUDE_RTE_CFGFILE_H__
#ifdef __cplusplus
extern "C" {
#endif
/**
* @file
* RTE Configuration File
*
* This library allows reading application defined parameters from standard
* format configuration file.
*
***/
#ifndef CFG_NAME_LEN
#define CFG_NAME_LEN 64
#endif
#ifndef CFG_VALUE_LEN
#define CFG_VALUE_LEN 256
#endif
/** Configuration file */
struct rte_cfgfile;
/** Configuration file entry */
struct rte_cfgfile_entry {
char name[CFG_NAME_LEN]; /**< Name */
char value[CFG_VALUE_LEN]; /**< Value */
};
/**
* Open config file
*
* @param filename
* Config file name
* @param flags
* Config file flags, Reserved for future use. Must be set to 0.
* @return
* Handle to configuration file on success, NULL otherwise
*/
struct rte_cfgfile *rte_cfgfile_load(const char *filename, int flags);
/**
* Get number of sections in config file
*
* @param cfg
* Config file
* @param sec_name
* Section name
* @param length
* Maximum section name length
* @return
* 0 on success, error code otherwise
*/
int rte_cfgfile_num_sections(struct rte_cfgfile *cfg, const char *sec_name,
size_t length);
/**
* Get name of all config file sections.
*
* Fills in the array sections with the name of all the sections in the file
* (up to the number of max_sections sections).
*
* @param cfg
* Config file
* @param sections
* Array containing section names after successful invocation. Each elemen
* of this array should be preallocated by the user with at least
* CFG_NAME_LEN characters.
* @param max_sections
* Maximum number of section names to be stored in sections array
* @return
* 0 on success, error code otherwise
*/
int rte_cfgfile_sections(struct rte_cfgfile *cfg, char *sections[],
int max_sections);
/**
* Check if given section exists in config file
*
* @param cfg
* Config file
* @param sectionname
* Section name
* @return
* TRUE (value different than 0) if section exists, FALSE (value 0) otherwise
*/
int rte_cfgfile_has_section(struct rte_cfgfile *cfg, const char *sectionname);
/**
* Get number of entries in given config file section
*
* If multiple sections have the given name this function operates on the
* first one.
*
* @param cfg
* Config file
* @param sectionname
* Section name
* @return
* Number of entries in section
*/
int rte_cfgfile_section_num_entries(struct rte_cfgfile *cfg,
const char *sectionname);
/** Get section entries as key-value pairs
*
* If multiple sections have the given name this function operates on the
* first one.
*
* @param cfg
* Config file
* @param sectionname
* Section name
* @param entries
* Pre-allocated array of at least max_entries entries where the section
* entries are stored as key-value pair after successful invocation
* @param max_entries
* Maximum number of section entries to be stored in entries array
* @return
* 0 on success, error code otherwise
*/
int rte_cfgfile_section_entries(struct rte_cfgfile *cfg,
const char *sectionname,
struct rte_cfgfile_entry *entries,
int max_entries);
/** Get section entries as key-value pairs
*
* The index of a section is the same as the index of its name in the
* result of rte_cfgfile_sections. This API can be used when there are
* multiple sections with the same name.
*
* @param cfg
* Config file
* @param index
* Section index
* @param sectionname
* Pre-allocated string of at least CFG_NAME_LEN characters where the
* section name is stored after successful invocation.
* @param entries
* Pre-allocated array of at least max_entries entries where the section
* entries are stored as key-value pair after successful invocation
* @param max_entries
* Maximum number of section entries to be stored in entries array
* @return
* Number of entries populated on success, negative error code otherwise
*/
int rte_cfgfile_section_entries_by_index(struct rte_cfgfile *cfg,
int index,
char *sectionname,
struct rte_cfgfile_entry *entries,
int max_entries);
/** Get value of the named entry in named config file section
*
* If multiple sections have the given name this function operates on the
* first one.
*
* @param cfg
* Config file
* @param sectionname
* Section name
* @param entryname
* Entry name
* @return
* Entry value
*/
const char *rte_cfgfile_get_entry(struct rte_cfgfile *cfg,
const char *sectionname,
const char *entryname);
/** Check if given entry exists in named config file section
*
* If multiple sections have the given name this function operates on the
* first one.
*
* @param cfg
* Config file
* @param sectionname
* Section name
* @param entryname
* Entry name
* @return
* TRUE (value different than 0) if entry exists, FALSE (value 0) otherwise
*/
int rte_cfgfile_has_entry(struct rte_cfgfile *cfg, const char *sectionname,
const char *entryname);
/** Close config file
*
* @param cfg
* Config file
* @return
* 0 on success, error code otherwise
*/
int rte_cfgfile_close(struct rte_cfgfile *cfg);
#ifdef __cplusplus
}
#endif
#endif
|
