Diffstat (limited to 'kmicromail/libetpan/tools/carray.c') (more/less context) (ignore whitespace changes)
-rw-r--r-- | kmicromail/libetpan/tools/carray.c | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/kmicromail/libetpan/tools/carray.c b/kmicromail/libetpan/tools/carray.c new file mode 100644 index 0000000..a8e78c9 --- a/dev/null +++ b/kmicromail/libetpan/tools/carray.c @@ -0,0 +1,143 @@ + +/* + * libEtPan! -- a mail stuff library + * + * carray - Implements simple dynamic pointer arrays + * + * Copyright (c) 1999-2000, Gaël Roualland <gael.roualland@iname.com> + * interface changes - 2002 - DINH Viet Hoa + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the libEtPan! project nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* + * $Id$ + */ + +#include <stdlib.h> +#include <string.h> +#include "carray.h" + +carray * carray_new(unsigned int initsize) { + carray * array; + + array = (carray *) malloc(sizeof(carray)); + if (!array) return NULL; + + array->len = 0; + array->max = initsize; + array->array = (void **) malloc(sizeof(void *) * initsize); + if (!array->array) { + free(array); + return NULL; + } + return array; +} + +int carray_add(carray * array, void * data, unsigned int * index) { + int r; + + r = carray_set_size(array, array->len + 1); + if (r < 0) + return r; + + array->array[array->len - 1] = data; + if (index != NULL) + * index = array->len - 1; + + return 0; +} + +int carray_set_size(carray * array, unsigned int new_size) +{ + if (new_size > array->max) { + unsigned int n = array->max * 2; + void * new; + + while (n <= new_size) + n *= 2; + + new = (void **) realloc(array->array, sizeof(void *) * n); + if (!new) + return -1; + array->array = new; + array->max = n; + } + array->len = new_size; + + return 0; +} + +int carray_delete_fast(carray * array, unsigned int indx) { + if (indx >= array->len) + return -1; + + array->array[indx] = NULL; + + return 0; +} + +int carray_delete(carray * array, unsigned int indx) { + if (indx >= array->len) + return -1; + + if (indx != --array->len) + array->array[indx] = array->array[array->len]; + return 0; +} + +int carray_delete_slow(carray * array, unsigned int indx) { + if (indx >= array->len) + return -1; + + if (indx != --array->len) + memmove(array->array + indx, array->array + indx + 1, + (array->len - indx) * sizeof(void *)); + return 0; +} + +#ifdef NO_MACROS +void ** carray_data(carray * array) { + return array->array; +} + +unsigned int carray_count(carray * array) { + return array->len; +} + +void * carray_get(carray * array, unsigned int indx) { + return array->array[indx]; +} + +void carray_set(carray * array, unsigned int indx, void * value) { + array->array[indx] = value; +} +#endif + +void carray_free(carray * array) { + free(array->array); + free(array); +} |