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 1.11 2013/05/30 09:12:27 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, 2013
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 <pthread.h>
51: #include <elwix.h>
52:
53:
54: struct tagCfg {
55: ait_val_t cfg_sec;
56: ait_val_t cfg_attr;
57: ait_val_t cfg_val;
58:
59: SLIST_ENTRY(tagCfg) cfg_next;
60: RB_ENTRY(tagCfg) cfg_node;
61: };
62: typedef struct tagRC {
63: pthread_mutex_t rc_mtx;
64:
65: struct tagCfg *slh_first;
66: struct tagCfg *rbh_root;
67: } cfg_root_t;
68: #define CFG_RC_LOCK(x) pthread_mutex_lock(&(x)->rc_mtx)
69: #define CFG_RC_UNLOCK(x) pthread_mutex_unlock(&(x)->rc_mtx)
70:
71:
72: // cfg_GetErrno() Get error code of last operation
73: int cfg_GetErrno();
74: // cfg_GetError() Get error text of last operation
75: const char *cfg_GetError();
76:
77:
78: /*
79: * Macros for config library.
80: */
81: #define CFG_ISEMPTY(x) RB_EMPTY((x))
82:
83:
84: /*
85: * cfgInitConfig() - Init config root
86: *
87: * @cfg = Config root
88: * return: -1 error or 0 ok
89: */
90: int cfgInitConfig(cfg_root_t * __restrict cfg);
91: /*
92: * cfgLoadConfig() - Load config from file
93: *
94: * @cfgName = Config filename
95: * @cfg = Config root
96: * return: -1 error or 0 ok
97: */
98: int cfgLoadConfig(const char *cfgName, cfg_root_t * __restrict cfg);
99: /*
100: * cfgUnloadConfig() - Unload config from memory and destroy resources
101: *
102: * @cfg = Config root
103: * return: none
104: */
105: void cfgUnloadConfig(cfg_root_t * __restrict cfg);
106: /*
107: * cfgClearConfig() - Clear config and free resources
108: *
109: * @cfg = Config root
110: * return: none
111: */
112: void cfgClearConfig(cfg_root_t * __restrict cfg);
113: /*
114: * cfgCreateConfig() - Create config file from memory
115: *
116: * @csConfigName = New config filename
117: * @cfg = Config root
118: * @whitespace = Additional whitespace characters to file
119: * return: -1 error or 0 ok
120: */
121: int cfgCreateConfig(const char *csConfigName, cfg_root_t * __restrict cfg,
122: int whitespace);
123:
124: /*
125: * cfgReadLines() - Read custom lines and add new item at config root
126: *
127: * @f = File resource
128: * @delim = Custom delimiter, if =NULL default is '='
129: * @end = Custom user end of file, if =NULL default is EOF
130: * @cfg = Config root
131: * return: -1 error or 0 ok
132: */
133: int cfgReadLines(FILE *f, const char *delim, const char *end,
134: cfg_root_t * __restrict cfg);
135: /*
136: * cfgWriteLines() - Write custom lines and export data to variable
137: *
138: * @f = File resource
139: * @delim = Custom delimiter, if =NULL default is '='
140: * @eol = End of line string, if =NULL default is "\n"
141: * @section = Export only section, if =NULL default is all
142: * @cfg = Config root
143: * return: =NULL error or !=NULL exported data, must be free after use with ait_freeVar()
144: */
145: ait_val_t *cfgWriteLines(FILE *f, const char *delim, const char *eol,
146: const char *section, cfg_root_t * __restrict cfg);
147: /*
148: * cfgReadConfig() - Read file and add new item at config root
149: *
150: * @f = File resource
151: * @cfg = Config root
152: * return: -1 error or 0 ok
153: */
154: int cfgReadConfig(FILE *f, cfg_root_t * __restrict cfg);
155: /*
156: * cfgWriteConfig() - Write config from memory
157: *
158: * @f = File handle
159: * @cfg = Config root
160: * @whitespace = Additional whitespace characters to file
161: * return: -1 error or 0 ok
162: */
163: int cfgWriteConfig(FILE *f, cfg_root_t * __restrict cfg, int whitespace);
164: /*
165: * cfgConcatConfig() - Concat two configs into one
166: *
167: * @cfg = Config root
168: * @add_cfg = Concated config will be destroy after merge
169: * return: -1 error or 0 ok
170: */
171: int cfgConcatConfig(cfg_root_t * __restrict cfg, cfg_root_t * __restrict add_cfg);
172: /*
173: * cfgMergeConfig() - Marge two list in one cfg and destroy add_cfg
174: *
175: * @cfg = Config root of main list
176: * @add_cfg = Merged config will be destroy after merge
177: * return: -1 error or 0 ok
178: */
179: int cfgMergeConfig(cfg_root_t * __restrict cfg, cfg_root_t * __restrict add_cfg);
180:
181: /*
182: * cfg_findAttribute() - Find attribute position in config file
183: *
184: * @cfg = Config root
185: * @csSec = Config section //[{csSec}]
186: * @csAttr = Config attribute //{csAttr} = ...
187: * return: 0 not found item, -1 error or >0 position in list
188: */
189: int cfg_findAttribute(cfg_root_t * __restrict cfg,
190: const char *csSec, const char *csAttr);
191: /*
192: * cfg_getAttribute() - Get item from config and return value from it
193: *
194: * @cfg = Config root
195: * @csSec = Config section //[{csSec}], if NULL unset in *default* section
196: * @csAttr = Config attribute //{csAttr} = ..., if NULL unset as *any* attribute
197: * return: NULL item not found or null parameters, !=NULL value const string
198: */
199: const char *cfg_getAttribute(cfg_root_t * __restrict cfg,
200: const char *csSec, const char *csAttr);
201: /*
202: * cfg_setAttribute() - Set item in config or adding new item if not exists
203: *
204: * @cfg = Config root
205: * @csSec = Config section //[{csSec}], if NULL set in *default* section
206: * @csAttr = Config attribute //{csAttr} = ...
207: * @csVal = Config value //... = {csVal} to setup
208: * return: 0 nothing changed, -1 error, 1 found and updated item or 2 added new item
209: */
210: int cfg_setAttribute(cfg_root_t * __restrict cfg, const char *csSec,
211: const char *csAttr, const char *csVal);
212: /*
213: * cfg_unsetAttribute() - Unset item from config and free resources
214: *
215: * @cfg = Config root
216: * @csSec = Config section //[{csSec}], if NULL unset in *default* section
217: * @csAttr = Config attribute //{csAttr} = ...
218: * return: 0 item not found, -1 error or 1 removed item
219: */
220: int cfg_unsetAttribute(cfg_root_t * __restrict cfg, const char *csSec,
221: const char *csAttr);
222:
223: /*
224: * cfg_loadAttribute() - Get guarded attribute, if not found item return *default value*
225: *
226: * @cfg = Config root
227: * @csSec = Config section //[{csSec}], if NULL unset in *default* section
228: * @csAttr = Config attribute //{csAttr} = ...
229: * @val = Return buffer for item Value //... = {val}
230: * @csDefValue = *Default Value* for return in //{val}, if not found item in config
231: * return: 0 item not found, -1 error or >0 number of copied bytes in //{val}
232: */
233: int cfg_loadAttribute(cfg_root_t * __restrict cfg, const char *csSec,
234: const char *csAttr, ait_val_t * __restrict val, const char *csDefValue);
235:
236:
237: #endif
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