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https://github.com/netsurf-browser/netsurf
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46 lines
1.6 KiB
C
46 lines
1.6 KiB
C
/* base64.h -- Encode binary data using printable characters.
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Copyright (C) 2004, 2005, 2006 Free Software Foundation, Inc.
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Written by Simon Josefsson.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software Foundation,
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Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
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#ifndef BASE64_H
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# define BASE64_H
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/* Get size_t. */
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# include <stddef.h>
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/* Get bool. */
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# include <stdbool.h>
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/* This uses that the expression (n+(k-1))/k means the smallest
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integer >= n/k, i.e., the ceiling of n/k. */
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# define BASE64_LENGTH(inlen) ((((inlen) + 2) / 3) * 4)
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extern bool isbase64 (char ch);
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extern void base64_encode (const char *restrict in, size_t inlen,
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char *restrict out, size_t outlen);
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extern size_t base64_encode_alloc (const char *in, size_t inlen, char **out);
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extern bool base64_decode (const char *restrict in, size_t inlen,
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char *restrict out, size_t *outlen);
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extern bool base64_decode_alloc (const char *in, size_t inlen,
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char **out, size_t *outlen);
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#endif /* BASE64_H */
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