Annotation of libaitcfg/src/queue.c, revision 1.14.4.3
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 $
1.14.4.3! misho 6: * $Id: queue.c,v 1.14.4.2 2014/03/19 17:00:51 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:
1.13 misho 15: Copyright 2004 - 2014
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:
1.7 misho 49: static inline struct tagCfg *
50: _selectAttribute(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr)
1.1 misho 51: {
1.10 misho 52: struct tagCfg fav, *c;
1.1 misho 53:
54: if (!cfg)
55: return NULL;
1.7 misho 56: else
57: memset(&fav, 0, sizeof fav);
1.1 misho 58:
1.7 misho 59: if (csSec && *csSec)
60: AIT_KEY(&fav.cfg_sec) = crcFletcher16((u_short*) csSec,
1.12 misho 61: E_ALIGN(strlen(csSec), 2) / 2);
1.7 misho 62: if (csAttr)
63: AIT_KEY(&fav.cfg_attr) = crcFletcher16((u_short*) csAttr,
1.12 misho 64: E_ALIGN(strlen(csAttr), 2) / 2);
1.7 misho 65:
66: if (!csAttr)
67: return RB_NFIND(tagRC, cfg, &fav);
1.10 misho 68: else {
69: c = RB_FIND(tagRC, cfg, &fav);
70: if (!c)
71: return NULL; /* not found */
72: do {
73: if (!strcmp(AIT_GET_STR(&c->cfg_attr), csAttr))
74: return c; /* FOUND! */
1.14.4.3! misho 75: } while ((c = RB_NEXT(tagRC, cfg, c)) && c && !cfg_tree_cmp(c, &fav));
1.10 misho 76: return NULL; /* not found */
77: }
1.1 misho 78: }
79:
1.7 misho 80: /* --------------------------------------------------------------- */
1.1 misho 81:
82: /*
1.14.4.2 misho 83: * cfg_getSection() - Get entire section attributes into array
84: *
85: * @cfg = Config root
86: * @csSec = Config section //[{csSec}]
87: * return: NULL not found or !=NULL allocated array, must free with array_Destroy() after use!
88: */
89: array_t *
90: cfg_getSection(cfg_root_t * __restrict cfg, const char *csSec)
91: {
92: array_t *arr = NULL;
93: struct tagCfg *av, fav;
94:
95: if (!cfg) {
96: cfg_SetErr(EINVAL, "Invalid argument(s)");
97: return NULL;
98: } else
99: memset(&fav, 0, sizeof fav);
100:
101: if (csSec && *csSec)
102: AIT_KEY(&fav.cfg_sec) = crcFletcher16((u_short*) csSec,
103: E_ALIGN(strlen(csSec), 2) / 2);
104:
105: av = RB_NFIND(tagRC, cfg, &fav);
106: if (!av)
107: return NULL;
108: if (strcmp(AIT_GET_STR(&av->cfg_sec), csSec))
109: return NULL;
110:
111: arr = array_Init(1);
112: if (!arr) {
113: cfg_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
114: return NULL;
115: } else
116: array_Push(arr, av, 0);
117:
1.14.4.3! misho 118: while ((av = RB_NEXT(tagRC, cfg, av)) && av && !AIT_ISEMPTY(&av->cfg_sec) &&
! 119: !strcmp(AIT_GET_STR(&av->cfg_sec), csSec))
1.14.4.2 misho 120: array_Push(arr, av, 0);
121:
122: return arr;
123: }
124:
125: /*
1.7 misho 126: * cfg_findAttribute() - Find attribute position in config file
127: *
128: * @cfg = Config root
1.1 misho 129: * @csSec = Config section //[{csSec}]
1.14.4.1 misho 130: * @csAttr = Config attribute //{csAttr} = ..., if NULL as *any* attribute
1.7 misho 131: * return: 0 not found item, -1 error or >0 position in list
132: */
1.12 misho 133: int
1.7 misho 134: cfg_findAttribute(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr)
1.1 misho 135: {
1.7 misho 136: struct tagCfg *av, fav;
1.1 misho 137: register int cx = 0;
138:
1.14.4.1 misho 139: if (!cfg) {
1.7 misho 140: cfg_SetErr(EINVAL, "Invalid argument(s)");
1.1 misho 141: return -1;
1.7 misho 142: } else
143: memset(&fav, 0, sizeof fav);
1.1 misho 144:
1.7 misho 145: if (csSec && *csSec)
146: AIT_KEY(&fav.cfg_sec) = crcFletcher16((u_short*) csSec,
1.12 misho 147: E_ALIGN(strlen(csSec), 2) / 2);
1.7 misho 148: if (csAttr)
149: AIT_KEY(&fav.cfg_attr) = crcFletcher16((u_short*) csAttr,
1.12 misho 150: E_ALIGN(strlen(csAttr), 2) / 2);
1.7 misho 151:
1.14 misho 152: TAILQ_FOREACH(av, cfg, cfg_next) {
1.1 misho 153: ++cx;
1.7 misho 154: if (!cfg_tree_cmp(&fav, av))
155: return cx;
1.1 misho 156: }
157:
158: return 0;
159: }
160:
161: /*
1.7 misho 162: * cfg_unsetAttribute() - Unset item from config and free resources
163: *
164: * @cfg = Config root
1.1 misho 165: * @csSec = Config section //[{csSec}], if NULL unset in *default* section
1.14.4.1 misho 166: * @csAttr = Config attribute //{csAttr} = ..., if NULL as *any* attribute
1.7 misho 167: * return: 0 item not found, -1 error or 1 removed item
168: */
169: int
170: cfg_unsetAttribute(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr)
1.1 misho 171: {
1.7 misho 172: struct tagCfg *av;
1.1 misho 173:
1.14.4.1 misho 174: if (!cfg)
1.1 misho 175: return -1;
176:
1.7 misho 177: av = _selectAttribute(cfg, csSec, csAttr);
1.1 misho 178: if (!av)
179: return 0;
180:
1.7 misho 181: CFG_RC_LOCK(cfg);
182: RB_REMOVE(tagRC, cfg, av);
1.14 misho 183: TAILQ_REMOVE(cfg, av, cfg_next);
1.7 misho 184: CFG_RC_UNLOCK(cfg);
185:
186: AIT_FREE_VAL(&av->cfg_val);
187: AIT_FREE_VAL(&av->cfg_attr);
188: AIT_FREE_VAL(&av->cfg_sec);
1.12 misho 189: e_free(av);
1.7 misho 190: return 1;
1.1 misho 191: }
192:
193: /*
1.7 misho 194: * cfg_setAttribute() - Set item in config or adding new item if not exists
195: *
196: * @cfg = Config root
1.1 misho 197: * @csSec = Config section //[{csSec}], if NULL set in *default* section
1.7 misho 198: * @csAttr = Config attribute //{csAttr} = ...
1.1 misho 199: * @csVal = Config value //... = {csVal} to setup
1.7 misho 200: * return: 0 nothing changed, -1 error, 1 found and updated item or 2 added new item
201: */
202: int
203: cfg_setAttribute(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr, const char *csVal)
1.1 misho 204: {
1.7 misho 205: struct tagCfg *av, *section;
1.1 misho 206:
207: if (!cfg || !csAttr)
208: return -1;
209:
1.7 misho 210: av = _selectAttribute(cfg, csSec, csAttr);
1.1 misho 211: if (!av) {
1.7 misho 212: /* adding new element */
213: section = _selectAttribute(cfg, csSec, NULL);
1.1 misho 214:
1.12 misho 215: av = e_malloc(sizeof(struct tagCfg));
1.1 misho 216: if (!av) {
217: LOGERR;
218: return -1;
219: } else {
1.7 misho 220: memset(av, 0, sizeof(struct tagCfg));
1.1 misho 221:
1.7 misho 222: CFG_RC_LOCK(cfg);
223: if (!section)
1.14 misho 224: TAILQ_INSERT_TAIL(cfg, av, cfg_next);
1.7 misho 225: else
1.14 misho 226: TAILQ_INSERT_BEFORE(section, av, cfg_next);
1.7 misho 227: CFG_RC_UNLOCK(cfg);
1.1 misho 228: }
1.7 misho 229:
1.1 misho 230: if (csSec && *csSec) {
1.7 misho 231: AIT_SET_STR(&av->cfg_sec, csSec);
232: AIT_KEY(&av->cfg_sec) = crcFletcher16(AIT_GET_LIKE(&av->cfg_sec, u_short*),
1.12 misho 233: E_ALIGN(AIT_LEN(&av->cfg_sec) - 1, 2) / 2);
1.1 misho 234: }
1.7 misho 235: AIT_SET_STR(&av->cfg_val, csVal ? csVal : "");
236: AIT_SET_STR(&av->cfg_attr, csAttr);
237: AIT_KEY(&av->cfg_attr) = crcFletcher16(AIT_GET_LIKE(&av->cfg_attr, u_short*),
1.12 misho 238: E_ALIGN(AIT_LEN(&av->cfg_attr) - 1, 2) / 2);
1.7 misho 239:
240: CFG_RC_LOCK(cfg);
241: RB_INSERT(tagRC, cfg, av);
242: CFG_RC_UNLOCK(cfg);
1.1 misho 243: return 2;
244: }
245:
1.10 misho 246: if (csVal && AIT_ADDR(&av->cfg_val) &&
247: strcmp((char*) csVal, (char*) AIT_GET_STR(&av->cfg_val))) {
1.7 misho 248: /* Update element */
249: AIT_FREE_VAL(&av->cfg_val);
250: AIT_SET_STR(&av->cfg_val, csVal);
1.1 misho 251: return 1;
252: }
253:
1.7 misho 254: /* Nothing happens ... found & values is equal! */
1.1 misho 255: return 0;
256: }
257:
258: /*
1.7 misho 259: * cfg_getAttribute() - Get item from config and return value from it
260: *
261: * @cfg = Config root
1.1 misho 262: * @csSec = Config section //[{csSec}], if NULL unset in *default* section
1.14.4.1 misho 263: * @csAttr = Config attribute //{csAttr} = ..., if NULL as *any* attribute
1.7 misho 264: * return: NULL item not found or null parameters, !=NULL value const string
265: */
1.12 misho 266: const char *
1.7 misho 267: cfg_getAttribute(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr)
1.1 misho 268: {
1.7 misho 269: struct tagCfg *av;
1.1 misho 270:
1.14.4.1 misho 271: if (!cfg)
1.1 misho 272: return NULL;
273:
1.7 misho 274: av = _selectAttribute(cfg, csSec, csAttr);
1.1 misho 275: if (!av)
276: return NULL;
277:
1.7 misho 278: return AIT_GET_STR(&av->cfg_val);
1.4 misho 279: }
280:
1.1 misho 281: /*
1.7 misho 282: * cfg_loadAttribute() - Get guarded attribute, if not found item return *default value*
283: *
284: * @cfg = Config root
1.1 misho 285: * @csSec = Config section //[{csSec}], if NULL unset in *default* section
1.14.4.1 misho 286: * @csAttr = Config attribute //{csAttr} = ..., if NULL as *any* attribute
1.7 misho 287: * @val = Return buffer for item Value //... = {val}
288: * @csDefValue = *Default Value* for return in //{val}, if not found item in config
289: * return: 0 item not found, -1 error or >0 number of copied bytes in //{val}
290: */
291: int
292: cfg_loadAttribute(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr,
293: ait_val_t * __restrict val, const char *csDefValue)
1.1 misho 294: {
1.7 misho 295: struct tagCfg *av;
1.1 misho 296: int ret = 0;
297:
1.14.4.1 misho 298: if (!cfg || !val) {
1.7 misho 299: cfg_SetErr(EINVAL, "Invalid argument(s)");
1.1 misho 300: return -1;
1.7 misho 301: }
1.1 misho 302:
1.9 misho 303: AIT_INIT_VAL(val);
1.7 misho 304: av = _selectAttribute(cfg, csSec, csAttr);
1.1 misho 305: if (!av) {
1.7 misho 306: /* not found item */
1.1 misho 307: if (csDefValue) {
1.7 misho 308: AIT_SET_STR(val, csDefValue);
309: ret = AIT_LEN(val);
1.8 misho 310: } else
311: AIT_INIT_VAL(val);
1.1 misho 312: return ret;
313: }
314:
1.10 misho 315: if (AIT_ISEMPTY(&av->cfg_val) || !AIT_ADDR(&av->cfg_val) ||
316: !*AIT_GET_LIKE(&av->cfg_val, char*)) {
1.7 misho 317: /* empty value */
1.1 misho 318: if (csDefValue) {
1.7 misho 319: AIT_SET_STR(val, csDefValue);
320: ret = AIT_LEN(val);
1.8 misho 321: } else
322: AIT_INIT_VAL(val);
1.1 misho 323: } else {
1.7 misho 324: /* copy value */
325: AIT_SET_STR(val, AIT_GET_STR(&av->cfg_val));
326: ret = AIT_LEN(val);
1.1 misho 327: }
328:
329: return ret;
330: }
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