string.c revision 49dbdb0186eb23d87d685b96eaefa9ec3c71d9b8
/*
* Copyright (C) 1996-2000 Internet Software Consortium.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
* CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
* SOFTWARE.
*/
/* $Id: string.c,v 1.7 2000/06/21 22:01:25 tale Exp $ */
/* Principal Author: Ted Lemon */
#include <config.h>
#include <isc/mem.h>
#include <isc/string.h>
#include <isc/util.h>
#include <omapi/private.h>
isc_result_t
omapi_string_create(omapi_string_t **d, unsigned int len) {
omapi_string_t *new;
new = isc_mem_get(omapi_mctx, OMAPI_STRING_EMPTY_SIZE + len);
if (new == NULL)
return (ISC_R_NOMEMORY);
memset(new, 0, OMAPI_STRING_EMPTY_SIZE);
new->len = len;
omapi_string_reference(d, new);
return (ISC_R_SUCCESS);
}
void
omapi_string_reference(omapi_string_t **r, omapi_string_t *h) {
REQUIRE(r != NULL && h != NULL);
REQUIRE(*r == NULL);
*r = h;
h->refcnt++;
}
void
omapi_string_dereference(omapi_string_t **h) {
REQUIRE(h != NULL && *h != NULL);
REQUIRE((*h)->refcnt > 0);
if (--((*h)->refcnt) <= 0)
isc_mem_put(omapi_mctx, *h,
OMAPI_STRING_EMPTY_SIZE + (*h)->len);
*h = NULL;
}
void
omapi_string_totext(omapi_string_t *string, isc_region_t *region) {
REQUIRE(string != NULL && region != NULL);
region->base = string->value;
region->length = string->len;
}
int
omapi_string_stringcmp(omapi_string_t *s1, omapi_string_t *s2) {
unsigned int len;
int order;
if (s1->len > s2->len)
len = s2->len;
else
len = s1->len;
order = memcmp(s1->value, s2->value, len);
if (order == 0) {
if (s1->len > s2->len)
order = 1;
else if (s1->len < s2->len)
order = -1;
}
return (order);
}
int
omapi_string_strcmp(omapi_string_t *s1, const char *s2) {
unsigned int len, slen;
int order;
slen = strlen(s2);
if (slen > s1->len)
len = s1->len;
else
len = slen;
order = memcmp(s1->value, s2, len);
if (order == 0) {
if (s1->len > slen)
order = 1;
else if (s1->len < slen)
order= -1;
}
return (order);
}