Annotation of libaitcfg/src/queue.c, revision 1.18
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 $
1.18 ! misho 6: * $Id: queue.c,v 1.17.2.1 2019/12/05 14:32:36 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:
1.17 misho 15: Copyright 2004 - 2019
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: /* --------------------------------------------------------------- */
1.18 ! misho 81:
! 82: /*
! 83: * cfg_dumpCfg() - dump config data
! 84: *
! 85: * @cfg = Config root
! 86: * return: none
! 87: */
! 88: void
! 89: cfg_dumpCfg(cfg_root_t * __restrict cfg)
! 90: {
! 91: struct tagCfg *r, *c, *ctmp, *q, *qtmp;
! 92: int syn;
! 93:
! 94: r = RB_ROOT(cfg);
! 95: printf("ROOT:: KEY=%.8x [%s] %s=%s\n", ((AIT_KEY(&r->cfg_sec) << 15) | AIT_KEY(&r->cfg_attr)),
! 96: AIT_ADDR(&r->cfg_sec), AIT_ADDR(&r->cfg_attr), AIT_ADDR(&r->cfg_val));
! 97:
! 98: RB_FOREACH_SAFE(c, tagRC, cfg, ctmp) {
! 99: syn ^= syn;
! 100: TAILQ_FOREACH_SAFE(q, cfg, cfg_next, qtmp) {
! 101: if (c == q) {
! 102: syn = 42;
! 103: break;
! 104: }
! 105: }
! 106:
! 107: printf("%s KEY=%.8x [%s] %s=%s sync=%d\n", c == r ? "*" : "",
! 108: ((AIT_KEY(&c->cfg_sec) << 15) | AIT_KEY(&c->cfg_attr)),
! 109: AIT_ADDR(&c->cfg_sec), AIT_ADDR(&c->cfg_attr), AIT_ADDR(&c->cfg_val), syn);
! 110: }
! 111: }
1.1 misho 112:
113: /*
1.15 misho 114: * cfg_getSection() - Get entire section attributes into array
115: *
116: * @cfg = Config root
117: * @csSec = Config section //[{csSec}]
118: * return: NULL not found or !=NULL allocated array, must free with array_Destroy() after use!
119: */
120: array_t *
121: cfg_getSection(cfg_root_t * __restrict cfg, const char *csSec)
122: {
123: array_t *arr = NULL;
124: struct tagCfg *av, fav;
125:
126: if (!cfg) {
127: cfg_SetErr(EINVAL, "Invalid argument(s)");
128: return NULL;
129: } else
130: memset(&fav, 0, sizeof fav);
131: if (csSec && !*csSec)
132: csSec = NULL;
133:
134: if (csSec && *csSec)
135: AIT_KEY(&fav.cfg_sec) = crcFletcher16((u_short*) csSec,
136: E_ALIGN(strlen(csSec), 2) / 2);
137:
1.17 misho 138: arr = array_Init(0);
1.15 misho 139: if (!arr) {
140: cfg_SetErr(elwix_GetErrno(), "%s", elwix_GetError());
141: return NULL;
1.17 misho 142: }
1.15 misho 143:
1.17 misho 144: TAILQ_FOREACH(av, cfg, cfg_next)
145: if (AIT_KEY(&av->cfg_sec) == AIT_KEY(&fav.cfg_sec)) {
146: if (!csSec) {
147: if (AIT_ISEMPTY(&av->cfg_sec))
148: array_Push(arr, av, 0);
149: } else {
150: if (!AIT_ISEMPTY(&av->cfg_sec) &&
151: !strcmp(AIT_GET_STR(&av->cfg_sec), csSec))
152: array_Push(arr, av, 0);
153: }
1.15 misho 154: }
155:
1.17 misho 156: if (!array_Size(arr))
157: array_Destroy(&arr);
1.15 misho 158:
159: return arr;
160: }
161:
162: /*
1.7 misho 163: * cfg_findAttribute() - Find attribute position in config file
164: *
165: * @cfg = Config root
1.1 misho 166: * @csSec = Config section //[{csSec}]
1.15 misho 167: * @csAttr = Config attribute //{csAttr} = ..., if NULL as *any* attribute
1.7 misho 168: * return: 0 not found item, -1 error or >0 position in list
169: */
1.12 misho 170: int
1.7 misho 171: cfg_findAttribute(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr)
1.1 misho 172: {
1.7 misho 173: struct tagCfg *av, fav;
1.1 misho 174: register int cx = 0;
175:
1.15 misho 176: if (!cfg) {
1.7 misho 177: cfg_SetErr(EINVAL, "Invalid argument(s)");
1.1 misho 178: return -1;
1.7 misho 179: } else
180: memset(&fav, 0, sizeof fav);
1.1 misho 181:
1.7 misho 182: if (csSec && *csSec)
183: AIT_KEY(&fav.cfg_sec) = crcFletcher16((u_short*) csSec,
1.12 misho 184: E_ALIGN(strlen(csSec), 2) / 2);
1.7 misho 185: if (csAttr)
186: AIT_KEY(&fav.cfg_attr) = crcFletcher16((u_short*) csAttr,
1.12 misho 187: E_ALIGN(strlen(csAttr), 2) / 2);
1.7 misho 188:
1.14 misho 189: TAILQ_FOREACH(av, cfg, cfg_next) {
1.1 misho 190: ++cx;
1.7 misho 191: if (!cfg_tree_cmp(&fav, av))
192: return cx;
1.1 misho 193: }
194:
195: return 0;
196: }
197:
198: /*
1.7 misho 199: * cfg_unsetAttribute() - Unset item from config and free resources
200: *
201: * @cfg = Config root
1.1 misho 202: * @csSec = Config section //[{csSec}], if NULL unset in *default* section
1.15 misho 203: * @csAttr = Config attribute //{csAttr} = ..., if NULL as *any* attribute
1.7 misho 204: * return: 0 item not found, -1 error or 1 removed item
205: */
206: int
207: cfg_unsetAttribute(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr)
1.1 misho 208: {
1.7 misho 209: struct tagCfg *av;
1.1 misho 210:
1.15 misho 211: if (!cfg)
1.1 misho 212: return -1;
213:
1.7 misho 214: av = _selectAttribute(cfg, csSec, csAttr);
1.1 misho 215: if (!av)
216: return 0;
217:
1.7 misho 218: CFG_RC_LOCK(cfg);
219: RB_REMOVE(tagRC, cfg, av);
1.14 misho 220: TAILQ_REMOVE(cfg, av, cfg_next);
1.7 misho 221: CFG_RC_UNLOCK(cfg);
222:
223: AIT_FREE_VAL(&av->cfg_val);
224: AIT_FREE_VAL(&av->cfg_attr);
225: AIT_FREE_VAL(&av->cfg_sec);
1.12 misho 226: e_free(av);
1.7 misho 227: return 1;
1.1 misho 228: }
229:
230: /*
1.7 misho 231: * cfg_setAttribute() - Set item in config or adding new item if not exists
232: *
233: * @cfg = Config root
1.1 misho 234: * @csSec = Config section //[{csSec}], if NULL set in *default* section
1.7 misho 235: * @csAttr = Config attribute //{csAttr} = ...
1.1 misho 236: * @csVal = Config value //... = {csVal} to setup
1.7 misho 237: * return: 0 nothing changed, -1 error, 1 found and updated item or 2 added new item
238: */
239: int
240: cfg_setAttribute(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr, const char *csVal)
1.1 misho 241: {
1.7 misho 242: struct tagCfg *av, *section;
1.1 misho 243:
244: if (!cfg || !csAttr)
245: return -1;
246:
1.7 misho 247: av = _selectAttribute(cfg, csSec, csAttr);
1.1 misho 248: if (!av) {
1.7 misho 249: /* adding new element */
250: section = _selectAttribute(cfg, csSec, NULL);
1.1 misho 251:
1.12 misho 252: av = e_malloc(sizeof(struct tagCfg));
1.1 misho 253: if (!av) {
254: LOGERR;
255: return -1;
256: } else {
1.7 misho 257: memset(av, 0, sizeof(struct tagCfg));
1.1 misho 258:
1.7 misho 259: CFG_RC_LOCK(cfg);
260: if (!section)
1.14 misho 261: TAILQ_INSERT_TAIL(cfg, av, cfg_next);
1.7 misho 262: else
1.14 misho 263: TAILQ_INSERT_BEFORE(section, av, cfg_next);
1.7 misho 264: CFG_RC_UNLOCK(cfg);
1.1 misho 265: }
1.7 misho 266:
1.1 misho 267: if (csSec && *csSec) {
1.7 misho 268: AIT_SET_STR(&av->cfg_sec, csSec);
269: AIT_KEY(&av->cfg_sec) = crcFletcher16(AIT_GET_LIKE(&av->cfg_sec, u_short*),
1.12 misho 270: E_ALIGN(AIT_LEN(&av->cfg_sec) - 1, 2) / 2);
1.1 misho 271: }
1.7 misho 272: AIT_SET_STR(&av->cfg_val, csVal ? csVal : "");
273: AIT_SET_STR(&av->cfg_attr, csAttr);
274: AIT_KEY(&av->cfg_attr) = crcFletcher16(AIT_GET_LIKE(&av->cfg_attr, u_short*),
1.12 misho 275: E_ALIGN(AIT_LEN(&av->cfg_attr) - 1, 2) / 2);
1.7 misho 276:
277: CFG_RC_LOCK(cfg);
278: RB_INSERT(tagRC, cfg, av);
279: CFG_RC_UNLOCK(cfg);
1.1 misho 280: return 2;
281: }
282:
1.10 misho 283: if (csVal && AIT_ADDR(&av->cfg_val) &&
284: strcmp((char*) csVal, (char*) AIT_GET_STR(&av->cfg_val))) {
1.7 misho 285: /* Update element */
286: AIT_FREE_VAL(&av->cfg_val);
287: AIT_SET_STR(&av->cfg_val, csVal);
1.1 misho 288: return 1;
289: }
290:
1.7 misho 291: /* Nothing happens ... found & values is equal! */
1.1 misho 292: return 0;
293: }
294:
295: /*
1.7 misho 296: * cfg_getAttribute() - Get item from config and return value from it
297: *
298: * @cfg = Config root
1.1 misho 299: * @csSec = Config section //[{csSec}], if NULL unset in *default* section
1.15 misho 300: * @csAttr = Config attribute //{csAttr} = ..., if NULL as *any* attribute
1.7 misho 301: * return: NULL item not found or null parameters, !=NULL value const string
302: */
1.12 misho 303: const char *
1.7 misho 304: cfg_getAttribute(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr)
1.1 misho 305: {
1.7 misho 306: struct tagCfg *av;
1.1 misho 307:
1.15 misho 308: if (!cfg)
1.1 misho 309: return NULL;
310:
1.7 misho 311: av = _selectAttribute(cfg, csSec, csAttr);
1.1 misho 312: if (!av)
313: return NULL;
314:
1.7 misho 315: return AIT_GET_STR(&av->cfg_val);
1.4 misho 316: }
317:
1.1 misho 318: /*
1.16 misho 319: * cfg_getAttributeLong() - Get item as long from config and return value from it
320: *
321: * @cfg = Config root
322: * @csSec = Config section //[{csSec}], if NULL unset in *default* section
323: * @csAttr = Config attribute //{csAttr} = ..., if NULL as *any* attribute
324: * return: value
325: */
326: long
327: cfg_getAttributeLong(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr)
328: {
329: const char *str = NULL;
330:
331: str = cfg_getAttribute(cfg, csSec, csAttr);
332: return strtol(str ? str : "", NULL, 0);
333: }
334:
335: /*
336: * cfg_getAttributeLLong() - Get item as long long from config and return value from it
337: *
338: * @cfg = Config root
339: * @csSec = Config section //[{csSec}], if NULL unset in *default* section
340: * @csAttr = Config attribute //{csAttr} = ..., if NULL as *any* attribute
341: * return: value
342: */
343: long long
344: cfg_getAttributeLLong(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr)
345: {
346: const char *str = NULL;
347:
348: str = cfg_getAttribute(cfg, csSec, csAttr);
349: return strtoll(str ? str : "", NULL, 0);
350: }
351:
352: /*
353: * cfg_getAttributeDouble() - Get item as double from config and return value from it
354: *
355: * @cfg = Config root
356: * @csSec = Config section //[{csSec}], if NULL unset in *default* section
357: * @csAttr = Config attribute //{csAttr} = ..., if NULL as *any* attribute
358: * return: value
359: */
360: double
361: cfg_getAttributeDouble(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr)
362: {
363: const char *str = NULL;
364:
365: str = cfg_getAttribute(cfg, csSec, csAttr);
366: return strtod(str ? str : "", NULL);
367: }
368:
369: /*
370: * cfg_getAttributeLDouble() - Get item as long double from config and return value from it
371: *
372: * @cfg = Config root
373: * @csSec = Config section //[{csSec}], if NULL unset in *default* section
374: * @csAttr = Config attribute //{csAttr} = ..., if NULL as *any* attribute
375: * return: value
376: */
377: long double
378: cfg_getAttributeLDouble(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr)
379: {
380: const char *str = NULL;
381:
382: str = cfg_getAttribute(cfg, csSec, csAttr);
383: return strtold(str ? str : "", NULL);
384: }
385:
386: /*
1.7 misho 387: * cfg_loadAttribute() - Get guarded attribute, if not found item return *default value*
388: *
389: * @cfg = Config root
1.1 misho 390: * @csSec = Config section //[{csSec}], if NULL unset in *default* section
1.15 misho 391: * @csAttr = Config attribute //{csAttr} = ..., if NULL as *any* attribute
1.7 misho 392: * @val = Return buffer for item Value //... = {val}
393: * @csDefValue = *Default Value* for return in //{val}, if not found item in config
394: * return: 0 item not found, -1 error or >0 number of copied bytes in //{val}
395: */
396: int
397: cfg_loadAttribute(cfg_root_t * __restrict cfg, const char *csSec, const char *csAttr,
398: ait_val_t * __restrict val, const char *csDefValue)
1.1 misho 399: {
1.7 misho 400: struct tagCfg *av;
1.1 misho 401: int ret = 0;
402:
1.15 misho 403: if (!cfg || !val) {
1.7 misho 404: cfg_SetErr(EINVAL, "Invalid argument(s)");
1.1 misho 405: return -1;
1.7 misho 406: }
1.1 misho 407:
1.9 misho 408: AIT_INIT_VAL(val);
1.7 misho 409: av = _selectAttribute(cfg, csSec, csAttr);
1.1 misho 410: if (!av) {
1.7 misho 411: /* not found item */
1.1 misho 412: if (csDefValue) {
1.7 misho 413: AIT_SET_STR(val, csDefValue);
414: ret = AIT_LEN(val);
1.8 misho 415: } else
416: AIT_INIT_VAL(val);
1.1 misho 417: return ret;
418: }
419:
1.10 misho 420: if (AIT_ISEMPTY(&av->cfg_val) || !AIT_ADDR(&av->cfg_val) ||
421: !*AIT_GET_LIKE(&av->cfg_val, char*)) {
1.7 misho 422: /* empty value */
1.1 misho 423: if (csDefValue) {
1.7 misho 424: AIT_SET_STR(val, csDefValue);
425: ret = AIT_LEN(val);
1.8 misho 426: } else
427: AIT_INIT_VAL(val);
1.1 misho 428: } else {
1.7 misho 429: /* copy value */
430: AIT_SET_STR(val, AIT_GET_STR(&av->cfg_val));
431: ret = AIT_LEN(val);
1.1 misho 432: }
433:
434: return ret;
435: }
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