Annotation of libaitcfg/src/queue.c, revision 1.14.4.2
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 $
1.14.4.2! misho 6: * $Id: queue.c,v 1.14.4.1 2014/03/19 16:35:29 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! */
75: } while (RB_NEXT(tagRC, cfg, c) && !cfg_tree_cmp(c, &fav));
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:
! 118: while (RB_NEXT(tagRC, cfg, av) && !strcmp(AIT_GET_STR(&av->cfg_sec), csSec))
! 119: array_Push(arr, av, 0);
! 120:
! 121: return arr;
! 122: }
! 123:
! 124: /*
1.7 misho 125: * cfg_findAttribute() - Find attribute position in config file
126: *
127: * @cfg = Config root
1.1 misho 128: * @csSec = Config section //[{csSec}]
1.14.4.1 misho 129: * @csAttr = Config attribute //{csAttr} = ..., if NULL as *any* attribute
1.7 misho 130: * return: 0 not found item, -1 error or >0 position in list
131: */
1.12 misho 132: int
1.7 misho 133: cfg_findAttribute(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr)
1.1 misho 134: {
1.7 misho 135: struct tagCfg *av, fav;
1.1 misho 136: register int cx = 0;
137:
1.14.4.1 misho 138: if (!cfg) {
1.7 misho 139: cfg_SetErr(EINVAL, "Invalid argument(s)");
1.1 misho 140: return -1;
1.7 misho 141: } else
142: memset(&fav, 0, sizeof fav);
1.1 misho 143:
1.7 misho 144: if (csSec && *csSec)
145: AIT_KEY(&fav.cfg_sec) = crcFletcher16((u_short*) csSec,
1.12 misho 146: E_ALIGN(strlen(csSec), 2) / 2);
1.7 misho 147: if (csAttr)
148: AIT_KEY(&fav.cfg_attr) = crcFletcher16((u_short*) csAttr,
1.12 misho 149: E_ALIGN(strlen(csAttr), 2) / 2);
1.7 misho 150:
1.14 misho 151: TAILQ_FOREACH(av, cfg, cfg_next) {
1.1 misho 152: ++cx;
1.7 misho 153: if (!cfg_tree_cmp(&fav, av))
154: return cx;
1.1 misho 155: }
156:
157: return 0;
158: }
159:
160: /*
1.7 misho 161: * cfg_unsetAttribute() - Unset item from config and free resources
162: *
163: * @cfg = Config root
1.1 misho 164: * @csSec = Config section //[{csSec}], if NULL unset in *default* section
1.14.4.1 misho 165: * @csAttr = Config attribute //{csAttr} = ..., if NULL as *any* attribute
1.7 misho 166: * return: 0 item not found, -1 error or 1 removed item
167: */
168: int
169: cfg_unsetAttribute(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr)
1.1 misho 170: {
1.7 misho 171: struct tagCfg *av;
1.1 misho 172:
1.14.4.1 misho 173: if (!cfg)
1.1 misho 174: return -1;
175:
1.7 misho 176: av = _selectAttribute(cfg, csSec, csAttr);
1.1 misho 177: if (!av)
178: return 0;
179:
1.7 misho 180: CFG_RC_LOCK(cfg);
181: RB_REMOVE(tagRC, cfg, av);
1.14 misho 182: TAILQ_REMOVE(cfg, av, cfg_next);
1.7 misho 183: CFG_RC_UNLOCK(cfg);
184:
185: AIT_FREE_VAL(&av->cfg_val);
186: AIT_FREE_VAL(&av->cfg_attr);
187: AIT_FREE_VAL(&av->cfg_sec);
1.12 misho 188: e_free(av);
1.7 misho 189: return 1;
1.1 misho 190: }
191:
192: /*
1.7 misho 193: * cfg_setAttribute() - Set item in config or adding new item if not exists
194: *
195: * @cfg = Config root
1.1 misho 196: * @csSec = Config section //[{csSec}], if NULL set in *default* section
1.7 misho 197: * @csAttr = Config attribute //{csAttr} = ...
1.1 misho 198: * @csVal = Config value //... = {csVal} to setup
1.7 misho 199: * return: 0 nothing changed, -1 error, 1 found and updated item or 2 added new item
200: */
201: int
202: cfg_setAttribute(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr, const char *csVal)
1.1 misho 203: {
1.7 misho 204: struct tagCfg *av, *section;
1.1 misho 205:
206: if (!cfg || !csAttr)
207: return -1;
208:
1.7 misho 209: av = _selectAttribute(cfg, csSec, csAttr);
1.1 misho 210: if (!av) {
1.7 misho 211: /* adding new element */
212: section = _selectAttribute(cfg, csSec, NULL);
1.1 misho 213:
1.12 misho 214: av = e_malloc(sizeof(struct tagCfg));
1.1 misho 215: if (!av) {
216: LOGERR;
217: return -1;
218: } else {
1.7 misho 219: memset(av, 0, sizeof(struct tagCfg));
1.1 misho 220:
1.7 misho 221: CFG_RC_LOCK(cfg);
222: if (!section)
1.14 misho 223: TAILQ_INSERT_TAIL(cfg, av, cfg_next);
1.7 misho 224: else
1.14 misho 225: TAILQ_INSERT_BEFORE(section, av, cfg_next);
1.7 misho 226: CFG_RC_UNLOCK(cfg);
1.1 misho 227: }
1.7 misho 228:
1.1 misho 229: if (csSec && *csSec) {
1.7 misho 230: AIT_SET_STR(&av->cfg_sec, csSec);
231: AIT_KEY(&av->cfg_sec) = crcFletcher16(AIT_GET_LIKE(&av->cfg_sec, u_short*),
1.12 misho 232: E_ALIGN(AIT_LEN(&av->cfg_sec) - 1, 2) / 2);
1.1 misho 233: }
1.7 misho 234: AIT_SET_STR(&av->cfg_val, csVal ? csVal : "");
235: AIT_SET_STR(&av->cfg_attr, csAttr);
236: AIT_KEY(&av->cfg_attr) = crcFletcher16(AIT_GET_LIKE(&av->cfg_attr, u_short*),
1.12 misho 237: E_ALIGN(AIT_LEN(&av->cfg_attr) - 1, 2) / 2);
1.7 misho 238:
239: CFG_RC_LOCK(cfg);
240: RB_INSERT(tagRC, cfg, av);
241: CFG_RC_UNLOCK(cfg);
1.1 misho 242: return 2;
243: }
244:
1.10 misho 245: if (csVal && AIT_ADDR(&av->cfg_val) &&
246: strcmp((char*) csVal, (char*) AIT_GET_STR(&av->cfg_val))) {
1.7 misho 247: /* Update element */
248: AIT_FREE_VAL(&av->cfg_val);
249: AIT_SET_STR(&av->cfg_val, csVal);
1.1 misho 250: return 1;
251: }
252:
1.7 misho 253: /* Nothing happens ... found & values is equal! */
1.1 misho 254: return 0;
255: }
256:
257: /*
1.7 misho 258: * cfg_getAttribute() - Get item from config and return value from it
259: *
260: * @cfg = Config root
1.1 misho 261: * @csSec = Config section //[{csSec}], if NULL unset in *default* section
1.14.4.1 misho 262: * @csAttr = Config attribute //{csAttr} = ..., if NULL as *any* attribute
1.7 misho 263: * return: NULL item not found or null parameters, !=NULL value const string
264: */
1.12 misho 265: const char *
1.7 misho 266: cfg_getAttribute(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr)
1.1 misho 267: {
1.7 misho 268: struct tagCfg *av;
1.1 misho 269:
1.14.4.1 misho 270: if (!cfg)
1.1 misho 271: return NULL;
272:
1.7 misho 273: av = _selectAttribute(cfg, csSec, csAttr);
1.1 misho 274: if (!av)
275: return NULL;
276:
1.7 misho 277: return AIT_GET_STR(&av->cfg_val);
1.4 misho 278: }
279:
1.1 misho 280: /*
1.7 misho 281: * cfg_loadAttribute() - Get guarded attribute, if not found item return *default value*
282: *
283: * @cfg = Config root
1.1 misho 284: * @csSec = Config section //[{csSec}], if NULL unset in *default* section
1.14.4.1 misho 285: * @csAttr = Config attribute //{csAttr} = ..., if NULL as *any* attribute
1.7 misho 286: * @val = Return buffer for item Value //... = {val}
287: * @csDefValue = *Default Value* for return in //{val}, if not found item in config
288: * return: 0 item not found, -1 error or >0 number of copied bytes in //{val}
289: */
290: int
291: cfg_loadAttribute(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr,
292: ait_val_t * __restrict val, const char *csDefValue)
1.1 misho 293: {
1.7 misho 294: struct tagCfg *av;
1.1 misho 295: int ret = 0;
296:
1.14.4.1 misho 297: if (!cfg || !val) {
1.7 misho 298: cfg_SetErr(EINVAL, "Invalid argument(s)");
1.1 misho 299: return -1;
1.7 misho 300: }
1.1 misho 301:
1.9 misho 302: AIT_INIT_VAL(val);
1.7 misho 303: av = _selectAttribute(cfg, csSec, csAttr);
1.1 misho 304: if (!av) {
1.7 misho 305: /* not found item */
1.1 misho 306: if (csDefValue) {
1.7 misho 307: AIT_SET_STR(val, csDefValue);
308: ret = AIT_LEN(val);
1.8 misho 309: } else
310: AIT_INIT_VAL(val);
1.1 misho 311: return ret;
312: }
313:
1.10 misho 314: if (AIT_ISEMPTY(&av->cfg_val) || !AIT_ADDR(&av->cfg_val) ||
315: !*AIT_GET_LIKE(&av->cfg_val, char*)) {
1.7 misho 316: /* empty value */
1.1 misho 317: if (csDefValue) {
1.7 misho 318: AIT_SET_STR(val, csDefValue);
319: ret = AIT_LEN(val);
1.8 misho 320: } else
321: AIT_INIT_VAL(val);
1.1 misho 322: } else {
1.7 misho 323: /* copy value */
324: AIT_SET_STR(val, AIT_GET_STR(&av->cfg_val));
325: ret = AIT_LEN(val);
1.1 misho 326: }
327:
328: return ret;
329: }
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