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/*
* strfuncs.h - string functions
*
* This file is Copyright by the GPSD project
* SPDX-License-Identifier: BSD-2-clause
*/
#ifndef _GPSD_STRFUNCS_H_
#define _GPSD_STRFUNCS_H_
#include <stdarg.h>
#include <stdbool.h>
#include <stdio.h>
#include <string.h>
#include "compiler.h"
static inline bool str_starts_with(const char *str, const char *prefix)
{
return 0 == strncmp(str, prefix, strlen(prefix));
}
PRINTF_FUNC(3, 4)
static inline void str_appendf(char *str, size_t alloc_size,
const char *format, ...)
{
va_list ap;
va_start(ap, format);
(void)vsnprintf(str + strlen(str), alloc_size - strlen(str), format, ap);
va_end(ap);
}
static inline void str_vappendf(char *str, size_t alloc_size,
const char *format, va_list ap)
{
(void) vsnprintf(str + strlen(str), alloc_size - strlen(str), format, ap);
}
static inline void str_rstrip_char(char *str, char ch)
{
if (0 != strlen(str) &&
str[strlen(str) - 1] == ch) {
str[strlen(str) - 1] = '\0';
}
}
/* memset() for a volatile destination
* dest = destination
* c = fill character
* count = sizeof(dest)
*/
static inline void memset_volatile(volatile void *dest, char c, size_t count)
{
volatile char *ptr = (volatile char*)dest;
while (0 < count--) {
*ptr++ = c;
}
}
#endif // _GPSD_STRFUNCS_H_
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