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#ifndef OSMOCORE_UTIL_H
#define OSMOCORE_UTIL_H
/*! \file utils.h
* \brief General-purpose utilities in the Osmocom core library
*/
/*! \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 */
};
/*! \fn get_value_string(const struct value_string *vs, uint32_t val)
* \brief get human-readable string for given value
* \param[in] vs Array of value_string tuples
* \param[in] val Value to be converted
* \returns pointer to human-readable string
*/
const char *get_value_string(const struct value_string *vs, uint32_t val);
/*! \fn get_string_value(const struct value_string *vs, const char *str)
* \brief get numeric value for given human-readable string
* \param[in] vs Array of value_string tuples
* \param[in] str human-readable string
* \returns numeric value (>0) or negative numer in case of error
*/
int get_string_value(const struct value_string *vs, const char *str);
/*! \fn osmo_bcd2char(uint8_t bcd)
* \brief Convert BCD-encoded digit into printable character
* \param[in] bcd A single BCD-encoded digit
* \returns single printable character
*/
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);
/*! \fn osmo_hexdump(const unsigned char *buf, int len)
* \brief Convert binary sequence to hexadecimal ASCII string
* This function will print a sequence of bytes as hexadecimal numbers,
* adding one space character between each byte (e.g. "1a ef d9")
* \param[in] buf pointer to sequence of bytes
* \param[in] len length of buf in number of bytes
* \returns pointer to zero-terminated string
*/
char *osmo_hexdump(const unsigned char *buf, int len);
/*! \fn osmo_hexdump_nospc(const unsigned char *buf, int len)
* \brief Convert binary sequence to hexadecimal ASCII string
* This function will print a sequence of bytes as hexadecimal numbers,
* without any space character between each byte (e.g. "1aefd9")
* \param[in] buf pointer to sequence of bytes
* \param[in] len length of buf in number of bytes
* \returns pointer to zero-terminated string
*/
char *osmo_osmo_hexdump_nospc(const unsigned char *buf, int len);
/*! \fn osmo_ubit_dump(const uint8_t *bits, unsigned int len)
* \brief Convert a sequence of unpacked bits to ASCII string
* \param[in] bits A sequence of unpacked bits
* \param[in] len Length of bits
*/
char *osmo_ubit_dump(const uint8_t *bits, unsigned int len);
#define osmo_static_assert(exp, name) typedef int dummy##name [(exp) ? 1 : -1];
/*! \fn osmo_str2lower(char *out, const char *in)
* \brief Convert an entire string to lower case
* \param[out] out output string, caller-allocated
* \param[in] in input string
*/
void osmo_str2lower(char *out, const char *in);
/*! \fn osmo_str2upper(char *out, const char *in)
* \brief Convert an entire string to upper case
* \param[out] out output string, caller-allocated
* \param[in] in input string
*/
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)
#endif
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