xref: /third_party/node/deps/cares/src/lib/ares_str.h

/* MIT License
 *
 * Copyright (c) 1998 Massachusetts Institute of Technology
 * Copyright (c) The c-ares project and its contributors
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 * SPDX-License-Identifier: MIT
 */
#ifndef HEADER_CARES_STRDUP_H
#define HEADER_CARES_STRDUP_H

#include "ares_setup.h"
#include "ares.h"

char         *ares_strdup(const char *s1);

size_t        ares_strlen(const char *str);

/*! Copy string from source to destination with destination buffer size
 *  provided.  The destination is guaranteed to be null terminated, if the
 *  provided buffer isn't large enough, only those bytes from the source that
 *  will fit will be copied.
 *
 *  \param[out] dest       Destination buffer
 *  \param[in]  src        Source to copy
 *  \param[in]  dest_size  Size of destination buffer
 *  \return String length.  Will be at most dest_size-1
 */
size_t        ares_strcpy(char *dest, const char *src, size_t dest_size);

ares_bool_t   ares_str_isnum(const char *str);

unsigned char ares__tolower(unsigned char c);
ares_bool_t   ares__memeq_ci(const unsigned char *ptr, const unsigned char *val,
                             size_t len);

#endif /* HEADER_CARES_STRDUP_H */