160 lines
3.7 KiB
C
160 lines
3.7 KiB
C
/*
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* Copyright (c) 2010 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Portions Copyright (c) 2010 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "baselocl.h"
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#include <string.h>
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static void
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string_dealloc(void *ptr)
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{
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}
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static int
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string_cmp(void *a, void *b)
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{
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return strcmp(a, b);
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}
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static unsigned long
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string_hash(void *ptr)
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{
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const char *s = ptr;
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unsigned long n;
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for (n = 0; *s; ++s)
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n += *s;
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return n;
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}
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struct heim_type_data _heim_string_object = {
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HEIM_TID_STRING,
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"string-object",
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NULL,
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string_dealloc,
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NULL,
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string_cmp,
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string_hash
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};
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/**
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* Create a string object
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*
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* @param string the string to create, must be an utf8 string
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*
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* @return string object
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*/
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heim_string_t
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heim_string_create(const char *string)
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{
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return heim_string_create_with_bytes(string, strlen(string));
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}
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heim_string_t
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heim_string_create_with_bytes(const void *data, size_t len)
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{
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heim_string_t s;
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s = _heim_alloc_object(&_heim_string_object, len + 1);
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if (s) {
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memcpy(s, data, len);
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((char *)s)[len] = '\0';
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}
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return s;
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}
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/**
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* Return the type ID of string objects
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*
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* @return type id of string objects
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*/
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heim_tid_t
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heim_string_get_type_id(void)
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{
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return HEIM_TID_STRING;
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}
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/**
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* Get the string value of the content.
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*
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* @param string the string object to get the value from
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*
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* @return a utf8 string
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*/
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const char *
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heim_string_get_utf8(heim_string_t string)
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{
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return (const char *)string;
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}
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/*
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*
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*/
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static void
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init_string(void *ptr)
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{
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heim_dict_t *dict = ptr;
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*dict = heim_dict_create(101);
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heim_assert(*dict != NULL, "__heim_string_constant");
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}
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heim_string_t
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__heim_string_constant(const char *_str)
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{
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static HEIMDAL_MUTEX mutex = HEIMDAL_MUTEX_INITIALIZER;
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static heim_base_once_t once;
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static heim_dict_t dict = NULL;
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heim_string_t s, s2;
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heim_base_once_f(&once, &dict, init_string);
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s = heim_string_create(_str);
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HEIMDAL_MUTEX_lock(&mutex);
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s2 = heim_dict_get_value(dict, s);
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if (s2) {
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heim_release(s);
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s = s2;
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} else {
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_heim_make_permanent(s);
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heim_dict_set_value(dict, s, s);
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}
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HEIMDAL_MUTEX_unlock(&mutex);
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return s;
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}
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