Annotation of libaitcfg/src/queue.c, revision 1.15
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 $
1.15 ! misho 6: * $Id: queue.c,v 1.14.4.4 2014/03/19 18:36:08 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! */
1.15 ! 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: /*
1.15 ! 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: if (csSec && !*csSec)
! 101: csSec = NULL;
! 102:
! 103: if (csSec && *csSec)
! 104: AIT_KEY(&fav.cfg_sec) = crcFletcher16((u_short*) csSec,
! 105: E_ALIGN(strlen(csSec), 2) / 2);
! 106:
! 107: av = RB_NFIND(tagRC, cfg, &fav);
! 108: if (!av)
! 109: return NULL;
! 110: if (csSec) {
! 111: if (AIT_ISEMPTY(&av->cfg_sec) || strcmp(AIT_GET_STR(&av->cfg_sec), csSec))
! 112: return NULL;
! 113: } else {
! 114: if (!AIT_ISEMPTY(&av->cfg_sec))
! 115: return NULL;
! 116: }
! 117:
! 118: arr = array_Init(1);
! 119: if (!arr) {
! 120: cfg_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
! 121: return NULL;
! 122: } else
! 123: array_Push(arr, av, 0);
! 124:
! 125: while ((av = RB_NEXT(tagRC, cfg, av)) && av) {
! 126: if (csSec) {
! 127: if (AIT_ISEMPTY(&av->cfg_sec) || strcmp(AIT_GET_STR(&av->cfg_sec), csSec))
! 128: break;
! 129: } else {
! 130: if (!AIT_ISEMPTY(&av->cfg_sec))
! 131: break;
! 132: }
! 133:
! 134: array_Push(arr, av, 0);
! 135: }
! 136:
! 137: return arr;
! 138: }
! 139:
! 140: /*
1.7 misho 141: * cfg_findAttribute() - Find attribute position in config file
142: *
143: * @cfg = Config root
1.1 misho 144: * @csSec = Config section //[{csSec}]
1.15 ! misho 145: * @csAttr = Config attribute //{csAttr} = ..., if NULL as *any* attribute
1.7 misho 146: * return: 0 not found item, -1 error or >0 position in list
147: */
1.12 misho 148: int
1.7 misho 149: cfg_findAttribute(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr)
1.1 misho 150: {
1.7 misho 151: struct tagCfg *av, fav;
1.1 misho 152: register int cx = 0;
153:
1.15 ! misho 154: if (!cfg) {
1.7 misho 155: cfg_SetErr(EINVAL, "Invalid argument(s)");
1.1 misho 156: return -1;
1.7 misho 157: } else
158: memset(&fav, 0, sizeof fav);
1.1 misho 159:
1.7 misho 160: if (csSec && *csSec)
161: AIT_KEY(&fav.cfg_sec) = crcFletcher16((u_short*) csSec,
1.12 misho 162: E_ALIGN(strlen(csSec), 2) / 2);
1.7 misho 163: if (csAttr)
164: AIT_KEY(&fav.cfg_attr) = crcFletcher16((u_short*) csAttr,
1.12 misho 165: E_ALIGN(strlen(csAttr), 2) / 2);
1.7 misho 166:
1.14 misho 167: TAILQ_FOREACH(av, cfg, cfg_next) {
1.1 misho 168: ++cx;
1.7 misho 169: if (!cfg_tree_cmp(&fav, av))
170: return cx;
1.1 misho 171: }
172:
173: return 0;
174: }
175:
176: /*
1.7 misho 177: * cfg_unsetAttribute() - Unset item from config and free resources
178: *
179: * @cfg = Config root
1.1 misho 180: * @csSec = Config section //[{csSec}], if NULL unset in *default* section
1.15 ! misho 181: * @csAttr = Config attribute //{csAttr} = ..., if NULL as *any* attribute
1.7 misho 182: * return: 0 item not found, -1 error or 1 removed item
183: */
184: int
185: cfg_unsetAttribute(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr)
1.1 misho 186: {
1.7 misho 187: struct tagCfg *av;
1.1 misho 188:
1.15 ! misho 189: if (!cfg)
1.1 misho 190: return -1;
191:
1.7 misho 192: av = _selectAttribute(cfg, csSec, csAttr);
1.1 misho 193: if (!av)
194: return 0;
195:
1.7 misho 196: CFG_RC_LOCK(cfg);
197: RB_REMOVE(tagRC, cfg, av);
1.14 misho 198: TAILQ_REMOVE(cfg, av, cfg_next);
1.7 misho 199: CFG_RC_UNLOCK(cfg);
200:
201: AIT_FREE_VAL(&av->cfg_val);
202: AIT_FREE_VAL(&av->cfg_attr);
203: AIT_FREE_VAL(&av->cfg_sec);
1.12 misho 204: e_free(av);
1.7 misho 205: return 1;
1.1 misho 206: }
207:
208: /*
1.7 misho 209: * cfg_setAttribute() - Set item in config or adding new item if not exists
210: *
211: * @cfg = Config root
1.1 misho 212: * @csSec = Config section //[{csSec}], if NULL set in *default* section
1.7 misho 213: * @csAttr = Config attribute //{csAttr} = ...
1.1 misho 214: * @csVal = Config value //... = {csVal} to setup
1.7 misho 215: * return: 0 nothing changed, -1 error, 1 found and updated item or 2 added new item
216: */
217: int
218: cfg_setAttribute(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr, const char *csVal)
1.1 misho 219: {
1.7 misho 220: struct tagCfg *av, *section;
1.1 misho 221:
222: if (!cfg || !csAttr)
223: return -1;
224:
1.7 misho 225: av = _selectAttribute(cfg, csSec, csAttr);
1.1 misho 226: if (!av) {
1.7 misho 227: /* adding new element */
228: section = _selectAttribute(cfg, csSec, NULL);
1.1 misho 229:
1.12 misho 230: av = e_malloc(sizeof(struct tagCfg));
1.1 misho 231: if (!av) {
232: LOGERR;
233: return -1;
234: } else {
1.7 misho 235: memset(av, 0, sizeof(struct tagCfg));
1.1 misho 236:
1.7 misho 237: CFG_RC_LOCK(cfg);
238: if (!section)
1.14 misho 239: TAILQ_INSERT_TAIL(cfg, av, cfg_next);
1.7 misho 240: else
1.14 misho 241: TAILQ_INSERT_BEFORE(section, av, cfg_next);
1.7 misho 242: CFG_RC_UNLOCK(cfg);
1.1 misho 243: }
1.7 misho 244:
1.1 misho 245: if (csSec && *csSec) {
1.7 misho 246: AIT_SET_STR(&av->cfg_sec, csSec);
247: AIT_KEY(&av->cfg_sec) = crcFletcher16(AIT_GET_LIKE(&av->cfg_sec, u_short*),
1.12 misho 248: E_ALIGN(AIT_LEN(&av->cfg_sec) - 1, 2) / 2);
1.1 misho 249: }
1.7 misho 250: AIT_SET_STR(&av->cfg_val, csVal ? csVal : "");
251: AIT_SET_STR(&av->cfg_attr, csAttr);
252: AIT_KEY(&av->cfg_attr) = crcFletcher16(AIT_GET_LIKE(&av->cfg_attr, u_short*),
1.12 misho 253: E_ALIGN(AIT_LEN(&av->cfg_attr) - 1, 2) / 2);
1.7 misho 254:
255: CFG_RC_LOCK(cfg);
256: RB_INSERT(tagRC, cfg, av);
257: CFG_RC_UNLOCK(cfg);
1.1 misho 258: return 2;
259: }
260:
1.10 misho 261: if (csVal && AIT_ADDR(&av->cfg_val) &&
262: strcmp((char*) csVal, (char*) AIT_GET_STR(&av->cfg_val))) {
1.7 misho 263: /* Update element */
264: AIT_FREE_VAL(&av->cfg_val);
265: AIT_SET_STR(&av->cfg_val, csVal);
1.1 misho 266: return 1;
267: }
268:
1.7 misho 269: /* Nothing happens ... found & values is equal! */
1.1 misho 270: return 0;
271: }
272:
273: /*
1.7 misho 274: * cfg_getAttribute() - Get item from config and return value from it
275: *
276: * @cfg = Config root
1.1 misho 277: * @csSec = Config section //[{csSec}], if NULL unset in *default* section
1.15 ! misho 278: * @csAttr = Config attribute //{csAttr} = ..., if NULL as *any* attribute
1.7 misho 279: * return: NULL item not found or null parameters, !=NULL value const string
280: */
1.12 misho 281: const char *
1.7 misho 282: cfg_getAttribute(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr)
1.1 misho 283: {
1.7 misho 284: struct tagCfg *av;
1.1 misho 285:
1.15 ! misho 286: if (!cfg)
1.1 misho 287: return NULL;
288:
1.7 misho 289: av = _selectAttribute(cfg, csSec, csAttr);
1.1 misho 290: if (!av)
291: return NULL;
292:
1.7 misho 293: return AIT_GET_STR(&av->cfg_val);
1.4 misho 294: }
295:
1.1 misho 296: /*
1.7 misho 297: * cfg_loadAttribute() - Get guarded attribute, if not found item return *default value*
298: *
299: * @cfg = Config root
1.1 misho 300: * @csSec = Config section //[{csSec}], if NULL unset in *default* section
1.15 ! misho 301: * @csAttr = Config attribute //{csAttr} = ..., if NULL as *any* attribute
1.7 misho 302: * @val = Return buffer for item Value //... = {val}
303: * @csDefValue = *Default Value* for return in //{val}, if not found item in config
304: * return: 0 item not found, -1 error or >0 number of copied bytes in //{val}
305: */
306: int
307: cfg_loadAttribute(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr,
308: ait_val_t * __restrict val, const char *csDefValue)
1.1 misho 309: {
1.7 misho 310: struct tagCfg *av;
1.1 misho 311: int ret = 0;
312:
1.15 ! misho 313: if (!cfg || !val) {
1.7 misho 314: cfg_SetErr(EINVAL, "Invalid argument(s)");
1.1 misho 315: return -1;
1.7 misho 316: }
1.1 misho 317:
1.9 misho 318: AIT_INIT_VAL(val);
1.7 misho 319: av = _selectAttribute(cfg, csSec, csAttr);
1.1 misho 320: if (!av) {
1.7 misho 321: /* not found item */
1.1 misho 322: if (csDefValue) {
1.7 misho 323: AIT_SET_STR(val, csDefValue);
324: ret = AIT_LEN(val);
1.8 misho 325: } else
326: AIT_INIT_VAL(val);
1.1 misho 327: return ret;
328: }
329:
1.10 misho 330: if (AIT_ISEMPTY(&av->cfg_val) || !AIT_ADDR(&av->cfg_val) ||
331: !*AIT_GET_LIKE(&av->cfg_val, char*)) {
1.7 misho 332: /* empty value */
1.1 misho 333: if (csDefValue) {
1.7 misho 334: AIT_SET_STR(val, csDefValue);
335: ret = AIT_LEN(val);
1.8 misho 336: } else
337: AIT_INIT_VAL(val);
1.1 misho 338: } else {
1.7 misho 339: /* copy value */
340: AIT_SET_STR(val, AIT_GET_STR(&av->cfg_val));
341: ret = AIT_LEN(val);
1.1 misho 342: }
343:
344: return ret;
345: }
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