Annotation of libaitcfg/src/queue.c, revision 1.6.4.4
1.2 misho 1: /*************************************************************************
2: * (C) 2008 AITNET ltd - Sofia/Bulgaria - <misho@aitbg.com>
3: * by Michael Pounov <misho@openbsd-bg.org>
4: *
5: * $Author: misho $
1.6.4.4 ! misho 6: * $Id: queue.c,v 1.6.4.3 2012/04/02 15:39:55 misho Exp $
1.2 misho 7: *
1.6 misho 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:
1.6.4.1 misho 15: Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
1.6 misho 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: */
1.1 misho 46: #include "global.h"
47:
48:
1.6.4.1 misho 49: static inline struct tagCfg *
50: _selectAttribute(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr)
1.1 misho 51: {
1.6.4.1 misho 52: struct tagCfg fav;
1.1 misho 53:
54: if (!cfg)
55: return NULL;
1.6.4.1 misho 56: else
57: memset(&fav, 0, sizeof fav);
1.1 misho 58:
1.6.4.1 misho 59: if (csSec && *csSec)
60: AIT_KEY(&fav.cfg_sec) = crcFletcher16((u_short*) csSec,
61: io_align(strlen(csSec), 1) / 2);
62: if (csAttr)
63: AIT_KEY(&fav.cfg_attr) = crcFletcher16((u_short*) csAttr,
64: io_align(strlen(csAttr), 1) / 2);
65:
66: /*
1.6.4.2 misho 67: struct tagCfg *av;
68:
1.6.4.1 misho 69: RB_FOREACH(av, tagRC, cfg) {
70: printf("sec=%s(%d) attr=%s(%d) val=%s\n", AIT_GET_LIKE(&av->cfg_sec, char*), AIT_KEY(&av->cfg_sec),
71: AIT_GET_LIKE(&av->cfg_attr, char*), AIT_KEY(&av->cfg_attr), AIT_GET_STR(&av->cfg_val));
1.1 misho 72: }
73:
1.6.4.1 misho 74: printf("ssss=%d aaaa=%d\n", AIT_KEY(&fav.cfg_sec), AIT_KEY(&fav.cfg_attr));
75: */
76: if (!csAttr)
77: return RB_NFIND(tagRC, cfg, &fav);
78: else
79: return RB_FIND(tagRC, cfg, &fav);
1.1 misho 80: }
81:
1.6.4.1 misho 82: static inline void
83: _destroyAttribute(struct tagCfg *av)
1.1 misho 84: {
1.6.4.1 misho 85: if (!av)
1.1 misho 86: return;
87:
88: }
89:
90: // ----------------------------------------------
91:
92: /*
1.6.4.1 misho 93: * cfg_findAttribute() - Find attribute position in config file
94: *
95: * @cfg = Config root
1.1 misho 96: * @csSec = Config section //[{csSec}]
97: * @csAttr = Config attribute //{csAttr} = ...
1.6.4.2 misho 98: * return: 0 not found item, -1 error or >0 position in list
1.6.4.1 misho 99: */
100: inline int
101: cfg_findAttribute(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr)
1.1 misho 102: {
1.6.4.1 misho 103: struct tagCfg *av, fav;
1.1 misho 104: register int cx = 0;
105:
1.6.4.1 misho 106: if (!cfg || !csAttr) {
107: cfg_SetErr(EINVAL, "Invalid argument(s)");
1.1 misho 108: return -1;
1.6.4.1 misho 109: } else
110: memset(&fav, 0, sizeof fav);
1.1 misho 111:
1.6.4.1 misho 112: if (csSec && *csSec)
113: AIT_KEY(&fav.cfg_sec) = crcFletcher16((u_short*) csSec,
114: io_align(strlen(csSec), 1) / 2);
115: if (csAttr)
116: AIT_KEY(&fav.cfg_attr) = crcFletcher16((u_short*) csAttr,
117: io_align(strlen(csAttr), 1) / 2);
118:
119: SLIST_FOREACH(av, cfg, cfg_next) {
1.1 misho 120: ++cx;
1.6.4.1 misho 121: if (!cfg_tree_cmp(&fav, av))
122: return cx;
1.1 misho 123: }
124:
125: return 0;
126: }
1.6.4.3 misho 127:
1.1 misho 128: /*
1.6.4.3 misho 129: * cfg_unsetAttribute() - Unset item from config and free resources
130: *
131: * @cfg = Config root
1.1 misho 132: * @csSec = Config section //[{csSec}], if NULL unset in *default* section
1.6.4.3 misho 133: * @csAttr = Config attribute //{csAttr} = ...
134: * return: 0 item not found, -1 error or 1 removed item
135: */
136: int
137: cfg_unsetAttribute(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr)
1.1 misho 138: {
1.6.4.3 misho 139: struct tagCfg *av;
1.1 misho 140:
141: if (!cfg || !csAttr)
142: return -1;
143:
1.6.4.3 misho 144: av = _selectAttribute(cfg, csSec, csAttr);
1.1 misho 145: if (!av)
146: return 0;
147:
1.6.4.3 misho 148: CFG_RC_LOCK(cfg);
149: RB_REMOVE(tagRC, cfg, av);
150: SLIST_REMOVE(cfg, av, tagCfg, cfg_next);
151: CFG_RC_UNLOCK(cfg);
1.1 misho 152:
1.6.4.3 misho 153: AIT_FREE_VAL(&av->cfg_val);
154: AIT_FREE_VAL(&av->cfg_attr);
155: AIT_FREE_VAL(&av->cfg_sec);
156: free(av);
157: return 1;
1.1 misho 158: }
159:
160: /*
1.6.4.2 misho 161: * cfg_setAttribute() - Set item in config or adding new item if not exists
162: *
163: * @cfg = Config root
1.1 misho 164: * @csSec = Config section //[{csSec}], if NULL set in *default* section
1.6.4.2 misho 165: * @csAttr = Config attribute //{csAttr} = ...
1.1 misho 166: * @csVal = Config value //... = {csVal} to setup
1.6.4.2 misho 167: * return: 0 nothing changed, -1 error, 1 found and updated item or 2 added new item
168: */
169: int
170: cfg_setAttribute(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr, const char *csVal)
1.1 misho 171: {
1.6.4.2 misho 172: struct tagCfg *av, *section;
1.1 misho 173:
1.6.4.2 misho 174: if (!cfg || !csAttr || !csVal)
1.1 misho 175: return -1;
176:
1.6.4.2 misho 177: av = _selectAttribute(cfg, csSec, csAttr);
1.1 misho 178: if (!av) {
1.6.4.2 misho 179: /* adding new element */
180: section = _selectAttribute(cfg, csSec, NULL);
1.1 misho 181:
1.6.4.2 misho 182: av = malloc(sizeof(struct tagCfg));
1.1 misho 183: if (!av) {
184: LOGERR;
185: return -1;
186: } else {
1.6.4.2 misho 187: memset(av, 0, sizeof(struct tagCfg));
1.1 misho 188:
1.6.4.2 misho 189: CFG_RC_LOCK(cfg);
190: if (!section)
191: SLIST_INSERT_HEAD(cfg, av, cfg_next);
192: else
193: SLIST_INSERT_AFTER(section, av, cfg_next);
194: CFG_RC_UNLOCK(cfg);
1.1 misho 195: }
1.6.4.2 misho 196:
1.1 misho 197: if (csSec && *csSec) {
1.6.4.2 misho 198: AIT_SET_STR(&av->cfg_sec, csSec);
199: AIT_KEY(&av->cfg_sec) = crcFletcher16(AIT_GET_LIKE(&av->cfg_sec, u_short*),
200: io_align(AIT_LEN(&av->cfg_sec) - 1, 1) / 2);
1.1 misho 201: }
1.6.4.2 misho 202: AIT_SET_STR(&av->cfg_val, csVal);
203: AIT_SET_STR(&av->cfg_attr, csAttr);
204: AIT_KEY(&av->cfg_attr) = crcFletcher16(AIT_GET_LIKE(&av->cfg_attr, u_short*),
205: io_align(AIT_LEN(&av->cfg_attr) - 1, 1) / 2);
206:
207: CFG_RC_LOCK(cfg);
208: RB_INSERT(tagRC, cfg, av);
209: CFG_RC_UNLOCK(cfg);
1.1 misho 210: return 2;
211: }
212:
1.6.4.2 misho 213: if (strcmp((char*) csVal, (char*) AIT_GET_STR(&av->cfg_val))) {
214: /* Update element */
215: AIT_FREE_VAL(&av->cfg_val);
216: AIT_SET_STR(&av->cfg_val, csVal);
1.1 misho 217: return 1;
218: }
219:
1.6.4.2 misho 220: /* Nothing happens ... found & values is equal! */
1.1 misho 221: return 0;
222: }
223:
224: /*
1.6.4.1 misho 225: * cfg_getAttribute() - Get item from config and return value from it
226: *
227: * @cfg = Config root
1.1 misho 228: * @csSec = Config section //[{csSec}], if NULL unset in *default* section
229: * @csAttr = Config attribute //{csAttr} = ..., if NULL unset as *any* attribute
1.6.4.2 misho 230: * return: NULL item not found or null parameters, !=NULL value const string
1.6.4.1 misho 231: */
232: inline const char *
233: cfg_getAttribute(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr)
1.1 misho 234: {
1.6.4.1 misho 235: struct tagCfg *av;
1.1 misho 236:
237: if (!cfg || !csAttr)
238: return NULL;
239:
1.6.4.1 misho 240: av = _selectAttribute(cfg, csSec, csAttr);
1.1 misho 241: if (!av)
242: return NULL;
243:
1.6.4.1 misho 244: return AIT_GET_STR(&av->cfg_val);
1.1 misho 245: }
246:
247: /*
1.6.4.4 ! misho 248: * cfg_loadAttribute() - Get guarded attribute, if not found item return *default value*
! 249: *
! 250: * @cfg = Config root
1.1 misho 251: * @csSec = Config section //[{csSec}], if NULL unset in *default* section
1.6.4.4 ! misho 252: * @csAttr = Config attribute //{csAttr} = ...
! 253: * @val = Return buffer for item Value //... = {val}
! 254: * @csDefValue = *Default Value* for return in //{val}, if not found item in config
! 255: * return: 0 item not found, -1 error or >0 number of copied bytes in //{val}
! 256: */
! 257: int
! 258: cfg_loadAttribute(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr,
! 259: ait_val_t * __restrict val, const char *csDefValue)
1.1 misho 260: {
1.6.4.4 ! misho 261: struct tagCfg *av;
1.1 misho 262: int ret = 0;
263:
1.6.4.4 ! misho 264: if (!cfg || !csAttr || !val) {
! 265: cfg_SetErr(EINVAL, "Invalid argument(s)");
1.1 misho 266: return -1;
1.6.4.4 ! misho 267: }
1.1 misho 268:
1.6.4.4 ! misho 269: av = _selectAttribute(cfg, csSec, csAttr);
1.1 misho 270: if (!av) {
1.6.4.4 ! misho 271: /* not found item */
1.1 misho 272: if (csDefValue) {
1.6.4.4 ! misho 273: AIT_SET_STR(val, csDefValue);
! 274: ret = AIT_LEN(val);
1.1 misho 275: }
276: return ret;
277: }
278:
1.6.4.4 ! misho 279: if (AIT_ISEMPTY(&av->cfg_val) || !*AIT_GET_LIKE(&av->cfg_val, char*)) {
! 280: /* empty value */
1.1 misho 281: if (csDefValue) {
1.6.4.4 ! misho 282: AIT_SET_STR(val, csDefValue);
! 283: ret = AIT_LEN(val);
1.1 misho 284: }
285: } else {
1.6.4.4 ! misho 286: /* copy value */
! 287: AIT_SET_STR(val, AIT_GET_STR(&av->cfg_val));
! 288: ret = AIT_LEN(val);
1.1 misho 289: }
290:
291: return ret;
292: }
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