1: /*************************************************************************
2: * (C) 2008 AITNET ltd - Sofia/Bulgaria - <misho@aitbg.com>
3: * by Michael Pounov <misho@openbsd-bg.org>
4: *
5: * $Author: misho $
6: * $Id: aitcfg.h,v 1.8 2012/07/25 15:24:20 misho Exp $
7: *
8: **************************************************************************
9: The ELWIX and AITNET software is distributed under the following
10: terms:
11:
12: All of the documentation and software included in the ELWIX and AITNET
13: Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org>
14:
15: Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
16: by Michael Pounov <misho@elwix.org>. All rights reserved.
17:
18: Redistribution and use in source and binary forms, with or without
19: modification, are permitted provided that the following conditions
20: are met:
21: 1. Redistributions of source code must retain the above copyright
22: notice, this list of conditions and the following disclaimer.
23: 2. Redistributions in binary form must reproduce the above copyright
24: notice, this list of conditions and the following disclaimer in the
25: documentation and/or other materials provided with the distribution.
26: 3. All advertising materials mentioning features or use of this software
27: must display the following acknowledgement:
28: This product includes software developed by Michael Pounov <misho@elwix.org>
29: ELWIX - Embedded LightWeight unIX and its contributors.
30: 4. Neither the name of AITNET nor the names of its contributors
31: may be used to endorse or promote products derived from this software
32: without specific prior written permission.
33:
34: THIS SOFTWARE IS PROVIDED BY AITNET AND CONTRIBUTORS ``AS IS'' AND
35: ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
36: IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
37: ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
38: FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
39: DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
40: OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
41: HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
42: LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
43: OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
44: SUCH DAMAGE.
45: */
46: #ifndef __AITCFG_H
47: #define __AITCFG_H
48:
49:
50: #include <aitio.h>
51: #include <atree.h>
52: #include <pthread.h>
53:
54:
55: struct tagCfg {
56: ait_val_t cfg_sec;
57: ait_val_t cfg_attr;
58: ait_val_t cfg_val;
59:
60: SLIST_ENTRY(tagCfg) cfg_next;
61: RB_ENTRY(tagCfg) cfg_node;
62: };
63: typedef struct tagRC {
64: pthread_mutex_t rc_mtx;
65:
66: struct tagCfg *slh_first;
67: struct tagCfg *rbh_root;
68: } cfg_root_t;
69: #define CFG_RC_LOCK(x) pthread_mutex_lock(&(x)->rc_mtx)
70: #define CFG_RC_UNLOCK(x) pthread_mutex_unlock(&(x)->rc_mtx)
71:
72:
73: // cfg_GetErrno() Get error code of last operation
74: inline int cfg_GetErrno();
75: // cfg_GetError() Get error text of last operation
76: inline const char *cfg_GetError();
77:
78:
79: /*
80: * Macros for config library.
81: */
82: #define CFG_ISEMPTY(x) RB_EMPTY((x))
83:
84:
85: /*
86: * cfgInitConfig() - Init config root
87: *
88: * @cfg = Config root
89: * return: -1 error or 0 ok
90: */
91: int cfgInitConfig(cfg_root_t * __restrict cfg);
92: /*
93: * cfgLoadConfig() - Load config from file
94: *
95: * @cfgName = Config filename
96: * @cfg = Config root
97: * return: -1 error or 0 ok
98: */
99: int cfgLoadConfig(const char *cfgName, cfg_root_t * __restrict cfg);
100: /*
101: * cfgUnloadConfig() - Unload config from memory and destroy resources
102: *
103: * @cfg = Config root
104: * return: none
105: */
106: void cfgUnloadConfig(cfg_root_t * __restrict cfg);
107: /*
108: * cfgClearConfig() - Clear config and free resources
109: *
110: * @cfg = Config root
111: * return: none
112: */
113: void cfgClearConfig(cfg_root_t * __restrict cfg);
114: /*
115: * cfgCreateConfig() - Create config file from memory
116: *
117: * @csConfigName = New config filename
118: * @cfg = Config root
119: * @whitespace = Additional whitespace characters to file
120: * return: -1 error or 0 ok
121: */
122: int cfgCreateConfig(const char *csConfigName, cfg_root_t * __restrict cfg,
123: int whitespace);
124:
125: /*
126: * cfgReadConfig() - Read file and add new item at config root
127: *
128: * @f = File resource
129: * @cfg = Config root
130: * return: -1 error or 0 ok
131: */
132: int cfgReadConfig(FILE *f, cfg_root_t * __restrict cfg);
133: /*
134: * cfgWriteConfig() - Write config from memory
135: *
136: * @f = File handle
137: * @cfg = Config root
138: * @whitespace = Additional whitespace characters to file
139: * return: -1 error or 0 ok
140: */
141: int cfgWriteConfig(FILE *f, cfg_root_t * __restrict cfg, int whitespace);
142: /*
143: * cfgConcatConfig() - Concat two configs into one
144: *
145: * @cfg = Config root
146: * @add_cfg = Concated config will be destroy after merge
147: * return: -1 error or 0 ok
148: */
149: int cfgConcatConfig(cfg_root_t * __restrict cfg, cfg_root_t * __restrict add_cfg);
150: /*
151: * cfgMergeConfig() - Marge two list in one cfg and destroy add_cfg
152: *
153: * @cfg = Config root of main list
154: * @add_cfg = Merged config will be destroy after merge
155: * return: -1 error or 0 ok
156: */
157: int cfgMergeConfig(cfg_root_t * __restrict cfg, cfg_root_t * __restrict add_cfg);
158:
159: /*
160: * cfg_findAttribute() - Find attribute position in config file
161: *
162: * @cfg = Config root
163: * @csSec = Config section //[{csSec}]
164: * @csAttr = Config attribute //{csAttr} = ...
165: * return: 0 not found item, -1 error or >0 position in list
166: */
167: inline int cfg_findAttribute(cfg_root_t * __restrict cfg,
168: const char *csSec, const char *csAttr);
169: /*
170: * cfg_getAttribute() - Get item from config and return value from it
171: *
172: * @cfg = Config root
173: * @csSec = Config section //[{csSec}], if NULL unset in *default* section
174: * @csAttr = Config attribute //{csAttr} = ..., if NULL unset as *any* attribute
175: * return: NULL item not found or null parameters, !=NULL value const string
176: */
177: inline const char *cfg_getAttribute(cfg_root_t * __restrict cfg,
178: const char *csSec, const char *csAttr);
179: /*
180: * cfg_setAttribute() - Set item in config or adding new item if not exists
181: *
182: * @cfg = Config root
183: * @csSec = Config section //[{csSec}], if NULL set in *default* section
184: * @csAttr = Config attribute //{csAttr} = ...
185: * @csVal = Config value //... = {csVal} to setup
186: * return: 0 nothing changed, -1 error, 1 found and updated item or 2 added new item
187: */
188: int cfg_setAttribute(cfg_root_t * __restrict cfg, const char *csSec,
189: const char *csAttr, const char *csVal);
190: /*
191: * cfg_unsetAttribute() - Unset item from config and free resources
192: *
193: * @cfg = Config root
194: * @csSec = Config section //[{csSec}], if NULL unset in *default* section
195: * @csAttr = Config attribute //{csAttr} = ...
196: * return: 0 item not found, -1 error or 1 removed item
197: */
198: int cfg_unsetAttribute(cfg_root_t * __restrict cfg, const char *csSec,
199: const char *csAttr);
200:
201: /*
202: * cfg_loadAttribute() - Get guarded attribute, if not found item return *default value*
203: *
204: * @cfg = Config root
205: * @csSec = Config section //[{csSec}], if NULL unset in *default* section
206: * @csAttr = Config attribute //{csAttr} = ...
207: * @val = Return buffer for item Value //... = {val}
208: * @csDefValue = *Default Value* for return in //{val}, if not found item in config
209: * return: 0 item not found, -1 error or >0 number of copied bytes in //{val}
210: */
211: int cfg_loadAttribute(cfg_root_t * __restrict cfg, const char *csSec,
212: const char *csAttr, ait_val_t * __restrict val, const char *csDefValue);
213:
214:
215: #endif
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