cbfstool: Add bintohex function
We need to emit some hex strings. Change-Id: I9e7e184282f6ad0470f2e269f5dc874e78f8b697 Signed-off-by: Patrick Georgi <patrick@georgi-clan.de> Reviewed-on: http://review.coreboot.org/11766 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@chromium.org>
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@ -196,3 +196,20 @@ uint64_t intfiletype(const char *name)
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return filetypes[i].type;
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return -1;
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}
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char *bintohex(uint8_t *data, size_t len)
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{
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static const char translate[16] = "0123456789abcdef";
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char *result = malloc(len * 2 + 1);
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if (result == NULL)
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return NULL;
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result[len*2] = '\0';
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unsigned int i;
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for (i = 0; i < len; i++) {
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result[i*2] = translate[(data[i] >> 4) & 0xf];
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result[i*2+1] = translate[data[i] & 0xf];
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}
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return result;
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}
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@ -210,4 +210,11 @@ extern struct xdr xdr_le, xdr_be;
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size_t bgets(struct buffer *input, void *output, size_t len);
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size_t bputs(struct buffer *b, const void *data, size_t len);
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/* Returns a 0-terminated string containing a hex representation of
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* len bytes starting at data.
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* The string is malloc'd and it's the caller's responsibility to free
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* the memory.
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* On error, bintohex returns NULL.
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*/
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char *bintohex(uint8_t *data, size_t len);
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#endif
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