diff options
Diffstat (limited to 'ksysguard/CContLib/ccont.c')
-rw-r--r-- | ksysguard/CContLib/ccont.c | 364 |
1 files changed, 364 insertions, 0 deletions
diff --git a/ksysguard/CContLib/ccont.c b/ksysguard/CContLib/ccont.c new file mode 100644 index 000000000..501429337 --- /dev/null +++ b/ksysguard/CContLib/ccont.c @@ -0,0 +1,364 @@ +/* + Lightweight C Container Library + + Copyright (c) 2002 Tobias Koenig <tokoe@kde.org> + + Original code was written by Chris Schlaeger <cs@kde.org> + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public + License as published by the Free Software Foundation; either + version 2 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public License + along with this library; see the file COPYING.LIB. If not, write to + the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + Boston, MA 02110-1301, USA. + +*/ + +#include "ccont.h" + +#include <stdio.h> +#include <stdlib.h> + +struct container_info { + INDEX count; + CONTAINER currentNode; +}; + +typedef struct container_info T_CONTAINER_INFO; +typedef struct container_info* CONTAINER_INFO; + +#define rpterr(x) fprintf(stderr, "%s\n", x) + +CONTAINER new_ctnr(void) +{ + CONTAINER_INFO info; + CONTAINER rootNode; + + rootNode = (CONTAINER)malloc(sizeof(T_CONTAINER)); + + info = (CONTAINER_INFO)malloc(sizeof(T_CONTAINER_INFO)); + info->count = 0; + info->currentNode = rootNode; + + rootNode->next = rootNode; + rootNode->prev = rootNode; + rootNode->data = info; + + return rootNode; +} + +void zero_destr_ctnr(CONTAINER rootNode, DESTR_FUNC destr_func) +{ + INDEX counter; + + if (rootNode == NIL || destr_func == NIL) { + rpterr("destr_ctnr: NIL argument"); + return; + } + + for (counter = level_ctnr(rootNode); counter > -1; --counter) + destr_func(pop_ctnr(rootNode)); + + if (rootNode->data) + free(rootNode->data); + + free(rootNode); + rootNode = 0; + + return; +} + +INDEX level_ctnr(CONTAINER rootNode) +{ + if (rootNode == NIL) { + rpterr("level_ctnr: NIL argument"); + return -1; + } + + return ((CONTAINER_INFO)rootNode->data)->count; +} + +void insert_ctnr(CONTAINER rootNode, void* object, INDEX pos) +{ + CONTAINER it; + INDEX counter = 0; + + if (rootNode == NIL || object == NIL) { + rpterr("insert_ctnr: NIL argument"); + return; + } + + for (it = rootNode->next; it != rootNode; it = it->next) { + if (counter == pos) { + CONTAINER newNode = (CONTAINER)malloc(sizeof(T_CONTAINER)); + + newNode->prev = it; + newNode->next = it->next; + it->next->prev = newNode; + it->next = newNode; + + newNode->data = object; + ((CONTAINER_INFO)rootNode->data)->count++; + return; + } + + counter++; + } +} + +void push_ctnr(CONTAINER rootNode, void* object) +{ + CONTAINER newNode; + + if (rootNode == NIL || object == NIL) { + rpterr("push_ctnr: NIL argument"); + return; + } + + newNode = (CONTAINER)malloc(sizeof(T_CONTAINER)); + newNode->next = rootNode; + newNode->prev = rootNode->prev; + rootNode->prev->next = newNode; + rootNode->prev = newNode; + + newNode->data = object; + ((CONTAINER_INFO)rootNode->data)->count++; +} + +void* remove_at_ctnr(CONTAINER rootNode, INDEX pos) +{ + CONTAINER it; + INDEX counter = 0; + void* retval; + + if (rootNode == NIL) { + rpterr("remove_ctnr: NIL argument"); + return NIL; + } + + for (it = rootNode->next; it != rootNode; it = it->next) { + if (counter == pos) { + retval = it->data; + + it->prev->next = it->next; + it->next->prev = it->prev; + + free(it); + + ((CONTAINER_INFO)rootNode->data)->count--; + return retval; + } + + counter++; + } + + return NIL; +} + +void* pop_ctnr(CONTAINER rootNode) +{ + CONTAINER ptr; + void* retval; + + if (rootNode == NIL) { + rpterr("pop_ctnr: NIL argument"); + return NIL; + } + + if (rootNode->next == rootNode) + return NIL; + + ptr = rootNode->next; + retval = ptr->data; + + rootNode->next = ptr->next; + ptr->next->prev = rootNode; + + ((CONTAINER_INFO)rootNode->data)->count--; + + free(ptr); + + return retval; +} + +void* get_ctnr(CONTAINER rootNode, INDEX pos) +{ + CONTAINER it; + INDEX counter = 0; + + if (rootNode == NIL) { + rpterr("get_ctnr: NIL argument"); + return NIL; + } + + for (it = rootNode->next; it != rootNode; it = it->next) { + if (counter == pos) + return it->data; + + counter++; + } + + return NIL; +} + +INDEX search_ctnr(CONTAINER rootNode, COMPARE_FUNC compare_func, void* pattern) +{ + CONTAINER it; + INDEX counter = 0; + + if (rootNode == NIL || compare_func == NIL || pattern == NIL) { + rpterr("search_ctnr: NIL argument"); + return -1; + } + + for (it = rootNode->next; it != rootNode; it = it->next) { + if (compare_func(pattern, it->data) == 0) + return counter; + + counter++; + } + + return -1; +} + +void swop_ctnr(CONTAINER rootNode, INDEX pos1, INDEX pos2) +{ + CONTAINER it, node1, node2; + INDEX counter = 0; + int found = 0; + void* tmpData; + + if (rootNode == NIL) { + rpterr("swop_ctnr: NIL argument"); + return; + } + + if (pos1 == pos2) + return; + + /** + * it is a bit hackish because of the 'goto' but it's fast + * since we have to run through the list only once + */ + for (it = rootNode->next; it != rootNode; it = it->next) { + if (counter == pos1) { + node1 = it; + if (found) + goto swapIt; + else + found = 1; + } + if (counter == pos2) { + node2 = it; + if (found) + goto swapIt; + else + found = 1; + } + + counter++; + } + + return; + +swapIt: + tmpData = node1->data; + node1->data = node2->data; + node2->data = tmpData; + return; +} + +void bsort_ctnr(CONTAINER rootNode, COMPARE_FUNC compare_func) +{ + INDEX right, i, level, last; + + if (rootNode == NIL || compare_func == NIL) { + rpterr("destr_ctnr: NIL argument"); + return; + } + + last = level = level_ctnr(rootNode); + do + { + right = last; + last = 0; + for (i = 1; i < right; i++) + if (compare_func(get_ctnr(rootNode, i - 1), get_ctnr(rootNode, i)) > 0) + swop_ctnr(rootNode, i - 1, last = i); + } while (last > 0); +} + +void* first_ctnr(CONTAINER rootNode) +{ + if (rootNode == NIL) { + rpterr("first_ctnr: NIL argument"); + return NIL; + } + + if (rootNode->next == rootNode) + return NIL; + + ((CONTAINER_INFO)rootNode->data)->currentNode = rootNode->next; + + return rootNode->next->data; +} + +void* next_ctnr(CONTAINER rootNode) +{ + CONTAINER_INFO info; + + if (rootNode == NIL) { + rpterr("next_ctnr: NIL argument"); + return NIL; + } + + info = (CONTAINER_INFO)rootNode->data; + + if (info->currentNode->next == rootNode) + return NIL; + + info->currentNode = info->currentNode->next; + + return info->currentNode->data; +} + +void* remove_ctnr(CONTAINER rootNode) +{ + CONTAINER currentNode, tmp; + CONTAINER_INFO info; + void* retval; + + if (rootNode == NIL) { + rpterr("remove_curr_ctnr: NIL argument"); + return NIL; + } + + info = (CONTAINER_INFO)rootNode->data; + currentNode = info->currentNode; + + if (currentNode == rootNode) { /* should never happen */ + rpterr("remove_curr_ctnr: delete root node"); + return NIL; + } + + retval = currentNode->data; + tmp = currentNode->prev; + + currentNode->prev->next = currentNode->next; + currentNode->next->prev = currentNode->prev; + + free(currentNode); + + info->count--; + info->currentNode = tmp; + + return retval; +} |