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notes: move hex_to_bytes() to hex.c and export it

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Make the function for converting pairs of hexadecimal digits to binary
available to other call sites.

Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
René Scharfe
2017-10-31 14:46:49 +01:00
committed by Junio C Hamano
parent cb5918aa0d
commit 0ec218656a
3 changed files with 19 additions and 17 deletions
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17
notes.c
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@ -334,23 +334,6 @@ static void note_tree_free(struct int_node *tree)
}
}
/*
* 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).
*/
static int hex_to_bytes(unsigned char *binary, const char *hex, size_t len)
{
for (; len; len--, hex += 2) {
unsigned int val = (hexval(hex[0]) << 4) | hexval(hex[1]);
if (val & ~0xff)
return -1;
*binary++ = val;
}
return 0;
}
static int non_note_cmp(const struct non_note *a, const struct non_note *b)
{
return strcmp(a->path, b->path);