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076f58c4bf
Provide a generic hex_decode() routine which can be shared between the Base16 code and the "hex" and "hexhyp" settings parsers. Signed-off-by: Michael Brown <mcb30@ipxe.org>
41 lines
908 B
C
41 lines
908 B
C
#ifndef _IPXE_BASE16_H
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#define _IPXE_BASE16_H
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/** @file
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*
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* Base16 encoding
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*
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*/
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FILE_LICENCE ( GPL2_OR_LATER );
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#include <stdint.h>
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#include <string.h>
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/**
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* Calculate length of base16-encoded data
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*
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* @v raw_len Raw data length
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* @ret encoded_len Encoded string length (excluding NUL)
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*/
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static inline size_t base16_encoded_len ( size_t raw_len ) {
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return ( 2 * raw_len );
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}
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/**
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* Calculate maximum length of base16-decoded string
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*
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* @v encoded Encoded string
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* @v max_raw_len Maximum length of raw data
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*/
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static inline size_t base16_decoded_max_len ( const char *encoded ) {
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return ( ( strlen ( encoded ) + 1 ) / 2 );
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}
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extern void base16_encode ( const uint8_t *raw, size_t len, char *encoded );
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extern int hex_decode ( const char *string, char separator, void *data,
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size_t len );
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extern int base16_decode ( const char *encoded, uint8_t *raw );
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#endif /* _IPXE_BASE16_H */
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