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/*
*
* Copyright 2014, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. 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 COPYRIGHT HOLDERS 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 COPYRIGHT
* OWNER 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.
*
*/
#ifndef __GRPC_SUPPORT_STRING_H__
#define __GRPC_SUPPORT_STRING_H__
#include <stddef.h>
#include <grpc/support/port_platform.h>
#ifdef __cplusplus
extern "C" {
#endif
/* String utility functions */
/* Returns a copy of src that can be passed to gpr_free().
If allocation fails or if src is NULL, returns NULL. */
char *gpr_strdup(const char *src);
/* flag to include plaintext after a hexdump */
#define GPR_HEXDUMP_PLAINTEXT 0x00000001
/* Converts array buf, of length len, into a hexadecimal dump. Result should
be freed with gpr_free() */
char *gpr_hexdump(const char *buf, size_t len, gpr_uint32 flags);
/* Parses an array of bytes into an integer (base 10). Returns 1 on success,
0 on failure. */
int gpr_parse_bytes_to_uint32(const char *data, size_t length,
gpr_uint32 *result);
/* Minimum buffer size for calling ltoa */
#define GPR_LTOA_MIN_BUFSIZE (3 * sizeof(long))
/* Convert a long to a string in base 10; returns the length of the
output string (or 0 on failure).
output must be at least GPR_LTOA_MIN_BUFSIZE bytes long. */
int gpr_ltoa(long value, char *output);
/* Reverse a run of bytes */
void gpr_reverse_bytes(char *str, int len);
/* printf to a newly-allocated string. The set of supported formats may vary
between platforms.
On success, returns the number of bytes printed (excluding the final '\0'),
and *strp points to a string which must later be destroyed with gpr_free().
On error, returns -1 and sets *strp to NULL. If the format string is bad,
the result is undefined. */
int gpr_asprintf(char **strp, const char *format, ...);
/* Join a set of strings, returning the resulting string.
Total combined length (excluding null terminator) is returned in total_length
if it is non-null. */
char *gpr_strjoin(const char **strs, size_t nstrs, size_t *total_length);
/* A vector of strings... for building up a final string one piece at a time */
typedef struct {
char **strs;
size_t count;
size_t capacity;
} gpr_strvec;
/* Initialize/destroy */
void gpr_strvec_init(gpr_strvec *strs);
void gpr_strvec_destroy(gpr_strvec *strs);
/* Add a string to a strvec, takes ownership of the string */
void gpr_strvec_add(gpr_strvec *strs, char *add);
/* Return a joined string with all added substrings, optionally setting
total_length as per gpr_strjoin */
char *gpr_strvec_flatten(gpr_strvec *strs, size_t *total_length);
#ifdef __cplusplus
}
#endif
#endif /* __GRPC_SUPPORT_STRING_H__ */
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