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Diffstat (limited to 'src/utils.c')
| -rw-r--r-- | src/utils.c | 59 |
1 files changed, 0 insertions, 59 deletions
diff --git a/src/utils.c b/src/utils.c index 3c4a8c9f..18e105f8 100644 --- a/src/utils.c +++ b/src/utils.c @@ -175,65 +175,6 @@ int osmo_bcd2str(char *dst, size_t dst_size, const uint8_t *bcd, int start_nibbl return OSMO_MAX(0, end_nibble - start_nibble); } -/*! Convert string to BCD. - * The given nibble offsets are interpreted in BCD order, i.e. nibble 0 is bcd[0] & 0x0f, nibble 1 is bcd[0] & 0xf0, nibble - * 3 is bcd[1] & 0x0f, etc.. - * \param[out] dst Output BCD buffer. - * \param[in] dst_size sizeof() the output string buffer. - * \param[in] digits String containing decimal or hexadecimal digits in upper or lower case. - * \param[in] start_nibble Offset to start from, in nibbles, typically 1 to skip the first (MI type) nibble. - * \param[in] end_nibble Negative to write all digits found in str, followed by 0xf nibbles to fill any started octet. - * If >= 0, stop before this offset in nibbles, e.g. to get default behavior, pass - * start_nibble + strlen(str) + ((start_nibble + strlen(str)) & 1? 1 : 0) + 1. - * \param[in] allow_hex If false, return error if there are hexadecimal digits (A-F). If true, write those to - * BCD. - * \returns The buffer size in octets that is used to place all bcd digits (including the skipped nibbles - * from 'start_nibble' and rounded up to full octets); -EINVAL on invalid digits; - * -ENOMEM if dst is NULL, if dst_size is too small to contain all nibbles, or if start_nibble is negative. - */ -int osmo_str2bcd(uint8_t *dst, size_t dst_size, const char *digits, int start_nibble, int end_nibble, bool allow_hex) -{ - const char *digit = digits; - int nibble_i; - - if (!dst || !dst_size || start_nibble < 0) - return -ENOMEM; - - if (end_nibble < 0) { - end_nibble = start_nibble + strlen(digits); - /* If the last octet is not complete, add another filler nibble */ - if (end_nibble & 1) - end_nibble++; - } - if ((end_nibble / 2) > dst_size) - return -ENOMEM; - - for (nibble_i = start_nibble; nibble_i < end_nibble; nibble_i++) { - uint8_t nibble = 0xf; - int octet = nibble_i >> 1; - if (*digit) { - char c = *digit; - digit++; - if (c >= '0' && c <= '9') - nibble = c - '0'; - else if (allow_hex && c >= 'A' && c <= 'F') - nibble = 0xa + (c - 'A'); - else if (allow_hex && c >= 'a' && c <= 'f') - nibble = 0xa + (c - 'a'); - else - return -EINVAL; - } - nibble &= 0xf; - if ((nibble_i & 1)) - dst[octet] = (nibble << 4) | (dst[octet] & 0x0f); - else - dst[octet] = (dst[octet] & 0xf0) | nibble; - } - - /* floor(float(end_nibble) / 2) */ - return end_nibble / 2; -} - /*! Parse a string containing hexadecimal digits * \param[in] str string containing ASCII encoded hexadecimal digits * \param[out] b output buffer |