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#pragma once
#include <osmocom/core/backtrace.h>
#include <osmocom/core/talloc.h>
/*! \defgroup utils General-purpose utility functions
* @{
*/
/*! \file utils.h */
/*! \brief Determine number of elements in an array of static size */
#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
/*! \brief Return the maximum of two specified values */
#define OSMO_MAX(a, b) ((a) >= (b) ? (a) : (b))
/*! \brief Return the minimum of two specified values */
#define OSMO_MIN(a, b) ((a) >= (b) ? (b) : (a))
#include <stdint.h>
/*! \brief A mapping between human-readable string and numeric value */
struct value_string {
unsigned int value; /*!< \brief numeric value */
const char *str; /*!< \brief human-readable string */
};
const char *get_value_string(const struct value_string *vs, uint32_t val);
int get_string_value(const struct value_string *vs, const char *str);
char osmo_bcd2char(uint8_t bcd);
/* only works for numbers in ascci */
uint8_t osmo_char2bcd(char c);
int osmo_hexparse(const char *str, uint8_t *b, int max_len);
char *osmo_ubit_dump(const uint8_t *bits, unsigned int len);
char *osmo_hexdump(const unsigned char *buf, int len);
char *osmo_hexdump_nospc(const unsigned char *buf, int len);
char *osmo_osmo_hexdump_nospc(const unsigned char *buf, int len) __attribute__((__deprecated__));
#define osmo_static_assert(exp, name) typedef int dummy##name [(exp) ? 1 : -1] __attribute__((__unused__));
void osmo_str2lower(char *out, const char *in);
void osmo_str2upper(char *out, const char *in);
#define OSMO_SNPRINTF_RET(ret, rem, offset, len) \
do { \
len += ret; \
if (ret > rem) \
ret = rem; \
offset += ret; \
rem -= ret; \
} while (0)
/*! Helper macro to terminate when an assertion failes
* \param[in] exp Predicate to verify
* This function will generate a backtrace and terminate the program if
* the predicate evaluates to false (0).
*/
#define OSMO_ASSERT(exp) \
if (!(exp)) { \
fprintf(stderr, "Assert failed %s %s:%d\n", #exp, __FILE__, __LINE__); \
osmo_generate_backtrace(); \
abort(); \
}
/*! duplicate a string using talloc and release its prior content (if any)
* \param[in] ctx Talloc context to use for allocation
* \param[out] dst pointer to string, will be updated with ptr to new string
* \param[in] newstr String that will be copieed to newly allocated string */
static inline void osmo_talloc_replace_string(void *ctx, char **dst, char *newstr)
{
if (*dst)
talloc_free(*dst);
*dst = talloc_strdup(ctx, newstr);
}
int osmo_constant_time_cmp(const uint8_t *exp, const uint8_t *rel, const int count);
uint64_t osmo_decode_big_endian(const uint8_t *data, size_t data_len);
uint8_t *osmo_encode_big_endian(uint64_t value, size_t data_len);
/*! @} */
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