mirror of
https://github.com/git/git.git
synced 2024-11-27 03:53:55 +08:00
28 lines
708 B
C
28 lines
708 B
C
|
#ifndef HEX_LL_H
|
||
|
|
#define HEX_LL_H
|
||
|
|
|
||
|
|
extern const signed char hexval_table[256];
|
||
|
|
static inline unsigned int hexval(unsigned char c)
|
||
|
|
{
|
||
|
|
return hexval_table[c];
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Convert two consecutive hexadecimal digits into a char. Return a
|
||
|
|
* negative value on error. Don't run over the end of short strings.
|
||
|
|
*/
|
||
|
|
static inline int hex2chr(const char *s)
|
||
|
|
{
|
||
|
|
unsigned int val = hexval(s[0]);
|
||
|
|
return (val & ~0xf) ? val : (val << 4) | hexval(s[1]);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Read `len` pairs of hexadecimal digits from `hex` and write the
|
||
|
|
* values to `binary` as `len` bytes. Return 0 on success, or -1 if
|
||
|
|
* the input does not consist of hex digits).
|
||
|
|
*/
|
||
|
|
int hex_to_bytes(unsigned char *binary, const char *hex, size_t len);
|
||
|
|
|
||
|
|
#endif
|