1: /*************************************************************************
2: * (C) 2011 AITNET ltd - Sofia/Bulgaria - <misho@aitnet.org>
3: * by Michael Pounov <misho@elwix.org>
4: *
5: * $Author: misho $
6: * $Id: array.c,v 1.4.2.1 2011/08/31 12:29:32 misho Exp $
7: *
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:
15: Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
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: */
46: #include "global.h"
47:
48:
49: /*
50: * io_arrayInit() - Create and initialize dynamic array
51: * @numItems = Number of Items
52: * return: NULL error, != NULL allocated memory for array
53: */
54: inline array_t *
55: io_arrayInit(int numItems)
56: {
57: array_t *arr = NULL;
58:
59: arr = malloc(sizeof(array_t));
60: if (!arr) {
61: LOGERR;
62: return NULL;
63: }
64:
65: arr->arr_num = numItems;
66: arr->arr_data = calloc(io_arraySize(arr), sizeof(void*));
67: if (!arr->arr_data) {
68: LOGERR;
69: free(arr);
70: return NULL;
71: } else
72: io_arrayZero(arr);
73:
74: return arr;
75: }
76:
77: /*
78: * io_arrayFrom() - Create and fill array from array with pointers
79: * @pargv = Array with pointers
80: * @argc = Number of Items, if 0 walk through argv and stop when reach NULL item
81: * return: NULL error, != NULL allocated new array
82: */
83: inline array_t *
84: io_arrayFrom(const char *** __restrict pargv, int argc)
85: {
86: array_t *arr = NULL;
87: const char **a = NULL;
88: register int num = 0;
89:
90: assert(pargv);
91: if (!pargv || !*pargv || argc < 0)
92: return NULL;
93:
94: if (argc)
95: num = argc;
96: else
97: for (a = *pargv; *a; a++, num++);
98:
99: arr = malloc(sizeof(array_t));
100: if (!arr) {
101: LOGERR;
102: return NULL;
103: }
104:
105: arr->arr_num = num;
106: arr->arr_data = calloc(io_arraySize(arr), sizeof(void*));
107: if (!arr->arr_data) {
108: LOGERR;
109: free(arr);
110: return NULL;
111: } else
112: memcpy(arr->arr_data, *pargv, io_arraySize(arr) * sizeof(void*));
113:
114: return arr;
115: }
116:
117: /*
118: * io_arrayTo() - Create and fill array with pointers from dynamic array
119: * @arr = Array
120: * return: NULL error, != NULL allocated memory for array, NULL terminated
121: */
122: inline char **
123: io_arrayTo(array_t * __restrict arr)
124: {
125: char **args = NULL;
126:
127: assert(arr);
128: if (!arr || !io_arraySize(arr))
129: return NULL;
130:
131: args = (char **) calloc(io_arraySize(arr) + 1, sizeof(char*));
132: if (!args) {
133: LOGERR;
134: return NULL;
135: } else
136: memcpy(args, arr->arr_data, io_arraySize(arr) * sizeof(char*));
137: args[io_arraySize(arr)] = NULL;
138:
139: return args;
140: }
141:
142: /*
143: * io_arrayFree() - Free all data in dynamic array items
144: * (WARNING! If assign static array dont use this!!!)
145: * @arr = Array
146: * return: none
147: */
148: inline void
149: io_arrayFree(array_t * __restrict arr)
150: {
151: register int i;
152:
153: if (!arr)
154: return;
155:
156: for (i = 0; i < io_arraySize(arr); i++)
157: if (arr->arr_data[i]) {
158: free(arr->arr_data[i]);
159: arr->arr_data[i] = NULL;
160: }
161: }
162:
163: /*
164: * io_arrayDestroy() - Free and destroy dynamic array
165: * @parr = Array
166: * return: none
167: */
168: inline void
169: io_arrayDestroy(array_t ** __restrict parr)
170: {
171: if (!parr || !*parr)
172: return;
173:
174: if ((*parr)->arr_data)
175: free((*parr)->arr_data);
176: free(*parr);
177: *parr = NULL;
178: }
179:
180: /*
181: * io_arrayLen() - Get last used element in dynamic array (array Length)
182: * @arr = Array
183: * return: -1 error, 0 empty or >0 position of last used element
184: */
185: inline int
186: io_arrayLen(array_t * __restrict arr)
187: {
188: register int i;
189:
190: assert(arr);
191: if (!arr)
192: return -1;
193:
194: for (i = io_arraySize(arr); i && !arr->arr_data[i - 1]; i--);
195:
196: return i;
197: }
198:
199: /*
200: * io_arrayGrow() - Grow/Shrink dynamic array, Use with care when it shrink!!!
201: * @arr = Array
202: * @newNumItems = Number of Items
203: * @freeShrink = Free elements before shrink array
204: * return: -1 error, 0 ok
205: */
206: int
207: io_arrayGrow(array_t * __restrict arr, int newNumItems, int freeShrink)
208: {
209: void **data;
210: int n = 0;
211: register int i;
212:
213: assert(arr);
214: if (!arr)
215: return -1;
216:
217: if (arr->arr_num == newNumItems)
218: return 0;
219: if (io_arraySize(arr) < newNumItems) {
220: n = newNumItems - io_arraySize(arr);
221: } else if (freeShrink)
222: for (i = newNumItems; i < arr->arr_num; i++)
223: if (arr->arr_data[i])
224: free(arr->arr_data[i]);
225:
226: arr->arr_num = newNumItems;
227: if (io_arraySize(arr)) {
228: data = realloc(arr->arr_data, io_arraySize(arr) * sizeof(void*));
229: if (!data) {
230: LOGERR;
231: return -1;
232: } else
233: arr->arr_data = data;
234:
235: memset(arr->arr_data + (io_arraySize(arr) - n), 0, n * sizeof(void*));
236: } else {
237: if (arr->arr_data)
238: free(arr->arr_data);
239: arr->arr_data = NULL;
240: }
241:
242: return 0;
243: }
244:
245: /*
246: * io_arrayVacuum() - Vacuum dynamic array, empty elements will be deleted
247: * @arr = Array
248: * @fromWhere = 1 begin, 2 ALL empty elements
249: * return: -1 error, 0 ok
250: */
251: int
252: io_arrayVacuum(array_t * __restrict arr, int fromWhere)
253: {
254: register int i, j, num;
255: int cx = 0;
256:
257: assert(arr);
258: if (!arr)
259: return -1;
260: else
261: fromWhere &= 0x7;
262:
263: num = io_arraySize(arr);
264: /*
265: if (fromWhere & VACUUM_RIGHT) {
266: for (cx = 0, i = num - 1; i && !arr->arr_data[i]; i--, cx++);
267: num -= cx;
268: }
269: */
270: if (fromWhere & VACUUM_LEFT) {
271: for (i = 0; i < num && !arr->arr_data[i]; i++);
272: if (i) {
273: memmove(arr->arr_data, arr->arr_data + i, (num - i) * sizeof(void*));
274: memset(arr->arr_data + (num - i), 0, i * sizeof(void*));
275:
276: num -= i;
277: cx += i;
278: }
279: }
280: if (fromWhere & VACUUM_BETWEEN) {
281: for (i = 0; i < num; i++) {
282: if (arr->arr_data[i])
283: continue;
284:
285: for (j = i; j < num && !arr->arr_data[j]; j++);
286:
287: memmove(arr->arr_data + i, arr->arr_data + j, (num - j) * sizeof(void*));
288: memset(arr->arr_data + i + (num - j), 0, (j - i) * sizeof(void*));
289:
290: num -= j - i;
291: cx += j - i;
292: }
293: }
294:
295: return cx;
296: }
297:
298: /*
299: * io_arrayPush() - Push element into dynamic array like stack manner, place at first empty position
300: * @arr = Array
301: * @data = Element, if set NULL return only first empty position
302: * return: -1 not found empty position, array is full!, >-1 return position of stored element into array
303: */
304: inline int
305: io_arrayPush(array_t * __restrict arr, void **data)
306: {
307: register int i;
308: int ret = -1;
309:
310: assert(arr);
311:
312: for (i = 0; i < io_arraySize(arr); i++)
313: if (!arr->arr_data[i]) {
314: if (data)
315: arr->arr_data[i] = *data;
316: ret = i;
317: break;
318: }
319:
320: return ret;
321: }
322:
323: /*
324: * io_arrayPop() - Pop element from dynamic array like stack manner, last used position
325: * @arr = Array
326: * @data = Element, if set NULL return only last used position
327: * @delAfter = Delete after Pop element, !=0 delete element from array after return data
328: * return: -1 not found used position, array is empty!, >-1 return element position
329: */
330: inline int
331: io_arrayPop(array_t * __restrict arr, void ** __restrict data, int delAfter)
332: {
333: register int i;
334: int ret = -1;
335:
336: assert(arr);
337:
338: for (i = io_arraySize(arr) - 1; i >= 0; i--)
339: if (arr->arr_data[i]) {
340: if (data)
341: *data = arr->arr_data[i];
342: if (delAfter)
343: arr->arr_data[i] = NULL;
344: ret = i;
345: break;
346: }
347:
348: return ret;
349: }
350:
351: /*
352: * io_arrayConcat() Concat source array to destination array
353: * @dest = Destination array
354: * @src = Source array
355: * return: -1 error; >0 new count of destination array
356: */
357: int
358: io_arrayConcat(array_t * __restrict dest, array_t * __restrict src)
359: {
360: int n;
361:
362: assert(dest);
363: assert(src);
364: if (!dest || !src)
365: return -1;
366:
367: n = io_arraySize(dest);
368: if (io_arrayGrow(dest, n + io_arraySize(src), 0))
369: return -1;
370: memcpy(dest->arr_data + n, src->arr_data, io_arraySize(src) * sizeof(void*));
371:
372: return io_arraySize(dest);
373: }
374:
375: /*
376: * io_argsNum() Parse and calculate number of arguments
377: * @csArgs = Input arguments line
378: * @csDelim = Delimiter(s) for separate
379: * return: 0 error format; -1 error:: can`t read; >0 ok, number of items
380: */
381: inline int
382: io_argsNum(const char *csArgs, const char *csDelim)
383: {
384: register int res;
385: char *pos;
386:
387: assert(csArgs);
388: assert(csDelim);
389: if (!csArgs || !csDelim)
390: return -1;
391:
392: for (res = 1, pos = (char*) csArgs; (pos = strpbrk(pos, csDelim)); res++, pos++);
393: return res;
394: }
395:
396: /*
397: * io_arrayMake() Parse and make array from arguments ... (input string will be modified!!!
398: * and output array must be free with io_arrayDestroy() after use!)
399: * @psArgs = Input arguments line, after execute string is modified!!!
400: * @nargs = Maximum requested count of arguments from input string psArgs, if 0 all psArgs
401: * @csDelim = Delimiter(s) for separate
402: * @parr = Output array of arguments ... (must be free with io_arrayDestroy() after use!)
403: * return: 0 error format; -1 error:: can`t read; >0 ok, number of readed items
404: */
405: int
406: io_arrayMake(char * __restrict psArgs, int nargs, const char *csDelim, array_t ** __restrict parr)
407: {
408: char **app;
409: register int i;
410:
411: assert(psArgs);
412: assert(csDelim);
413: assert(parr);
414: if (!psArgs || !csDelim || !parr)
415: return -1;
416:
417: if (nargs)
418: i = nargs;
419: else
420: i = io_argsNum(psArgs, csDelim);
421: *parr = io_arrayInit(i);
422: if (!*parr)
423: return -1;
424:
425: for (i = 0, app = (char**) (*parr)->arr_data;
426: app < (char**) (*parr)->arr_data + (*parr)->arr_num &&
427: (*app = strsep((char **) &psArgs, csDelim));
428: **app ? i++ : i, **app ? app++ : app);
429: return i;
430: }
431:
432: /*
433: * io_MakeAV() Parse and make attribute/value pair
434: * @csArgs = Input argument line
435: * @csDelim = Delimiter for separate
436: * @psAttr = Output Attribute
437: * @attrLen = Size of attribute array
438: * @psValue = Output Value, if ==NULL this element not present value or not wanted for return
439: * @valLen = Size of value array
440: * return: 0 error format; -1 error:: can`t read; >0 ok, number of readed items
441: */
442: int
443: io_MakeAV(const char * __restrict csArgs, const char *csDelim,
444: char * __restrict psAttr, int attrLen, char * __restrict psValue, int valLen)
445: {
446: register int ret = 0;
447: char *pos, *psBuf;
448:
449: if (!csArgs || !csDelim || !psAttr || !attrLen)
450: return -1;
451: if (psValue && !valLen)
452: return -1;
453: else
454: memset(psValue, 0, valLen);
455: psBuf = strdup(csArgs);
456: if (!psBuf) {
457: LOGERR;
458: return -1;
459: }
460:
461: pos = strpbrk(psBuf, csDelim);
462: if (pos)
463: *pos++ = 0;
464: ret++;
465: strlcpy(psAttr, psBuf, attrLen);
466:
467: if (pos && *pos) {
468: ret++;
469: if (psValue)
470: strlcpy(psValue, pos, valLen);
471: }
472:
473: free(psBuf);
474: return ret;
475: }
476:
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