Harald Welte | ec8b450 | 2010-02-20 20:34:29 +0100 | [diff] [blame] | 1 | #ifndef OSMOCORE_UTIL_H |
| 2 | #define OSMOCORE_UTIL_H |
| 3 | |
Harald Welte | bd598e3 | 2011-08-16 23:26:52 +0200 | [diff] [blame^] | 4 | /*! \file utils.h |
| 5 | * \brief General-purpose utilities in the Osmocom core library |
| 6 | */ |
| 7 | |
| 8 | /*! \brief Determine number of elements in an array of static size */ |
Harald Welte | ec8b450 | 2010-02-20 20:34:29 +0100 | [diff] [blame] | 9 | #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) |
Harald Welte | bd598e3 | 2011-08-16 23:26:52 +0200 | [diff] [blame^] | 10 | /*! \brief Return the maximum of two specified values */ |
Harald Welte | e9b744e | 2011-06-26 14:19:54 +0200 | [diff] [blame] | 11 | #define OSMO_MAX(a, b) (a) >= (b) ? (a) : (b) |
Harald Welte | bd598e3 | 2011-08-16 23:26:52 +0200 | [diff] [blame^] | 12 | /*! \brief Return the minimum of two specified values */ |
Harald Welte | 430be84 | 2011-07-27 22:23:11 +0200 | [diff] [blame] | 13 | #define OSMO_MIN(a, b) (a) >= (b) ? (b) : (a) |
Harald Welte | ec8b450 | 2010-02-20 20:34:29 +0100 | [diff] [blame] | 14 | |
Harald Welte | d284cd9 | 2010-03-01 21:58:31 +0100 | [diff] [blame] | 15 | #include <stdint.h> |
| 16 | |
Harald Welte | bd598e3 | 2011-08-16 23:26:52 +0200 | [diff] [blame^] | 17 | /*! \brief A mapping between human-readable string and numeric value */ |
Harald Welte | d284cd9 | 2010-03-01 21:58:31 +0100 | [diff] [blame] | 18 | struct value_string { |
Harald Welte | bd598e3 | 2011-08-16 23:26:52 +0200 | [diff] [blame^] | 19 | unsigned int value; /*!< \brief numeric value */ |
| 20 | const char *str; /*!< \brief human-readable string */ |
Harald Welte | d284cd9 | 2010-03-01 21:58:31 +0100 | [diff] [blame] | 21 | }; |
| 22 | |
Harald Welte | bd598e3 | 2011-08-16 23:26:52 +0200 | [diff] [blame^] | 23 | /*! \fn get_value_string(const struct value_string *vs, uint32_t val) |
| 24 | * \brief get human-readable string for given value |
| 25 | * \param[in] vs Array of value_string tuples |
| 26 | * \param[in] val Value to be converted |
| 27 | * \returns pointer to human-readable string |
| 28 | */ |
Harald Welte | d284cd9 | 2010-03-01 21:58:31 +0100 | [diff] [blame] | 29 | const char *get_value_string(const struct value_string *vs, uint32_t val); |
Harald Welte | bd598e3 | 2011-08-16 23:26:52 +0200 | [diff] [blame^] | 30 | |
| 31 | /*! \fn get_string_value(const struct value_string *vs, const char *str) |
| 32 | * \brief get numeric value for given human-readable string |
| 33 | * \param[in] vs Array of value_string tuples |
| 34 | * \param[in] str human-readable string |
| 35 | * \returns numeric value (>0) or negative numer in case of error |
| 36 | */ |
Harald Welte | d284cd9 | 2010-03-01 21:58:31 +0100 | [diff] [blame] | 37 | int get_string_value(const struct value_string *vs, const char *str); |
| 38 | |
Harald Welte | bd598e3 | 2011-08-16 23:26:52 +0200 | [diff] [blame^] | 39 | /*! \fn osmo_bcd2char(uint8_t bcd) |
| 40 | * \brief Convert BCD-encoded digit into printable character |
| 41 | * \param[in] bcd A single BCD-encoded digit |
| 42 | * \returns single printable character |
| 43 | */ |
Pablo Neira Ayuso | 87f7b25 | 2011-05-07 12:43:08 +0200 | [diff] [blame] | 44 | char osmo_bcd2char(uint8_t bcd); |
Harald Welte | a73e2f9 | 2010-03-04 10:50:32 +0100 | [diff] [blame] | 45 | /* only works for numbers in ascci */ |
Pablo Neira Ayuso | 87f7b25 | 2011-05-07 12:43:08 +0200 | [diff] [blame] | 46 | uint8_t osmo_char2bcd(char c); |
Harald Welte | d284cd9 | 2010-03-01 21:58:31 +0100 | [diff] [blame] | 47 | |
Pablo Neira Ayuso | 87f7b25 | 2011-05-07 12:43:08 +0200 | [diff] [blame] | 48 | int osmo_hexparse(const char *str, uint8_t *b, int max_len); |
Harald Welte | bd598e3 | 2011-08-16 23:26:52 +0200 | [diff] [blame^] | 49 | |
| 50 | /*! \fn osmo_hexdump(const unsigned char *buf, int len) |
| 51 | * \brief Convert binary sequence to hexadecimal ASCII string |
| 52 | * This function will print a sequence of bytes as hexadecimal numbers, |
| 53 | * adding one space character between each byte (e.g. "1a ef d9") |
| 54 | * \param[in] buf pointer to sequence of bytes |
| 55 | * \param[in] len length of buf in number of bytes |
| 56 | * \returns pointer to zero-terminated string |
| 57 | */ |
Pablo Neira Ayuso | 87f7b25 | 2011-05-07 12:43:08 +0200 | [diff] [blame] | 58 | char *osmo_hexdump(const unsigned char *buf, int len); |
Harald Welte | bd598e3 | 2011-08-16 23:26:52 +0200 | [diff] [blame^] | 59 | |
| 60 | /*! \fn osmo_hexdump_nospc(const unsigned char *buf, int len) |
| 61 | * \brief Convert binary sequence to hexadecimal ASCII string |
| 62 | * This function will print a sequence of bytes as hexadecimal numbers, |
| 63 | * without any space character between each byte (e.g. "1aefd9") |
| 64 | * \param[in] buf pointer to sequence of bytes |
| 65 | * \param[in] len length of buf in number of bytes |
| 66 | * \returns pointer to zero-terminated string |
| 67 | */ |
Pablo Neira Ayuso | 87f7b25 | 2011-05-07 12:43:08 +0200 | [diff] [blame] | 68 | char *osmo_osmo_hexdump_nospc(const unsigned char *buf, int len); |
Harald Welte | bd598e3 | 2011-08-16 23:26:52 +0200 | [diff] [blame^] | 69 | |
| 70 | /*! \fn osmo_ubit_dump(const uint8_t *bits, unsigned int len) |
| 71 | * \brief Convert a sequence of unpacked bits to ASCII string |
| 72 | * \param[in] bits A sequence of unpacked bits |
| 73 | * \param[in] len Length of bits |
| 74 | */ |
Pablo Neira Ayuso | 87f7b25 | 2011-05-07 12:43:08 +0200 | [diff] [blame] | 75 | char *osmo_ubit_dump(const uint8_t *bits, unsigned int len); |
Harald Welte | 3eba991 | 2010-07-30 10:37:29 +0200 | [diff] [blame] | 76 | |
Pablo Neira Ayuso | 87f7b25 | 2011-05-07 12:43:08 +0200 | [diff] [blame] | 77 | #define osmo_static_assert(exp, name) typedef int dummy##name [(exp) ? 1 : -1]; |
Holger Hans Peter Freyther | 52c07ca | 2011-01-16 17:37:27 +0100 | [diff] [blame] | 78 | |
Harald Welte | bd598e3 | 2011-08-16 23:26:52 +0200 | [diff] [blame^] | 79 | /*! \fn osmo_str2lower(char *out, const char *in) |
| 80 | * \brief Convert an entire string to lower case |
| 81 | * \param[out] out output string, caller-allocated |
| 82 | * \param[in] in input string |
| 83 | */ |
Harald Welte | 2822296 | 2011-02-18 20:37:04 +0100 | [diff] [blame] | 84 | void osmo_str2lower(char *out, const char *in); |
Harald Welte | bd598e3 | 2011-08-16 23:26:52 +0200 | [diff] [blame^] | 85 | |
| 86 | /*! \fn osmo_str2upper(char *out, const char *in) |
| 87 | * \brief Convert an entire string to upper case |
| 88 | * \param[out] out output string, caller-allocated |
| 89 | * \param[in] in input string |
| 90 | */ |
Harald Welte | 2822296 | 2011-02-18 20:37:04 +0100 | [diff] [blame] | 91 | void osmo_str2upper(char *out, const char *in); |
| 92 | |
Pablo Neira Ayuso | 3abad6a | 2011-03-28 19:24:22 +0200 | [diff] [blame] | 93 | #define OSMO_SNPRINTF_RET(ret, rem, offset, len) \ |
| 94 | do { \ |
| 95 | len += ret; \ |
| 96 | if (ret > rem) \ |
| 97 | ret = rem; \ |
| 98 | offset += ret; \ |
| 99 | rem -= ret; \ |
| 100 | } while (0) |
| 101 | |
Harald Welte | ec8b450 | 2010-02-20 20:34:29 +0100 | [diff] [blame] | 102 | #endif |