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- /* hexify.c: change a binary string to ASCII hex characters.
-
- Copyright (C) 1992 Free Software Foundation, Inc.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- #include "config.h"
-
- #include "hexify.h"
-
-
- /* Convert the number N (assumed to be small enough) to a lowercase hex
- character. */
- #define HEX_DIGIT(n) ((n) < 10 ? (n) + '0' : (n) - 10 + 'a')
-
- string
- hexify (one_byte *data, unsigned length)
- {
- unsigned i;
- /* Each byte in S turns into two hex chars, plus the terminating null. */
- string h = xmalloc (length * 2 + 1);
-
- for (i = 0; i < length; i++)
- {
- unsigned char n = ( data[i] & 0xf0) >> 4;
- h[i * 2] = HEX_DIGIT (n);
-
- n = data[i] & 0x0f;
- h[i * 2 + 1] = HEX_DIGIT (n);
- }
- h[i * 2] = 0;
-
- return h;
- }
-