62 lines
1.6 KiB
C
62 lines
1.6 KiB
C
/*
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This file is part of libcapwap.
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libcapwap is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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libcapwap is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Foobar. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @file
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* @brief Implementation of various format functions.
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*/
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#include <stdint.h>
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#include <stdio.h>
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/**
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* Format bytes as hex string.
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* @param dst destination buffer
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* @param format format to use when writing a byte.
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* @param delim delimiter
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* @param src bytes to format
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* @param len number of bytes to format
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* @return the number character written to dst
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*
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* This function is used by macros like #cw_format_hexl, #cw_format_hex ... \n
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* The size of the destination buffer must be at least x * len + strlen(delim) * (len-1) +1,
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* where x is the number of characters a formatted hex byte needs (typically 2).
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*
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*/
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int cw_format_hex_bytes(char *dst, const char *format, const char *delim,
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const uint8_t * src, int len)
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{
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char *d = dst;
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int i;
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const char *cdelim = NULL;
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for (i = 0; i < len; i++) {
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if (cdelim)
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d += sprintf(d, "%s", cdelim);
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else
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cdelim = delim;
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d += sprintf(d, format, src[i]);
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}
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return d - dst;
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}
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