From e1908ae95dd4c9d19ee4dfabfc8bf8a7f85943fe Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 18:58:41 +0200 Subject: Adding upstream version 9.4. Signed-off-by: Daniel Baumann --- lib/base64.h | 70 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 70 insertions(+) create mode 100644 lib/base64.h (limited to 'lib/base64.h') diff --git a/lib/base64.h b/lib/base64.h new file mode 100644 index 0000000..b5cb2ea --- /dev/null +++ b/lib/base64.h @@ -0,0 +1,70 @@ +/* base64.h -- Encode binary data using printable characters. + Copyright (C) 2004-2006, 2009-2023 Free Software Foundation, Inc. + Written by Simon Josefsson. + + This file is free software: you can redistribute it and/or modify + it under the terms of the GNU Lesser General Public License as + published by the Free Software Foundation; either version 2.1 of the + License, or (at your option) any later version. + + This file 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 Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with this program. If not, see . */ + +#ifndef BASE64_H +# define BASE64_H + +/* This file uses _GL_ATTRIBUTE_CONST. */ +#if !_GL_CONFIG_H_INCLUDED + #error "Please include config.h first." +#endif + +/* Get idx_t. */ +# include + +# ifdef __cplusplus +extern "C" { +# endif + +/* This uses that the expression (n+(k-1))/k means the smallest + integer >= n/k, i.e., the ceiling of n/k. */ +# define BASE64_LENGTH(inlen) ((((inlen) + 2) / 3) * 4) + +struct base64_decode_context +{ + int i; + char buf[4]; +}; + +extern bool isbase64 (char ch) _GL_ATTRIBUTE_CONST; + +extern void base64_encode (const char *restrict in, idx_t inlen, + char *restrict out, idx_t outlen); + +extern idx_t base64_encode_alloc (const char *in, idx_t inlen, char **out); + +extern void base64_decode_ctx_init (struct base64_decode_context *ctx); + +extern bool base64_decode_ctx (struct base64_decode_context *ctx, + const char *restrict in, idx_t inlen, + char *restrict out, idx_t *outlen); + +extern bool base64_decode_alloc_ctx (struct base64_decode_context *ctx, + const char *in, idx_t inlen, + char **out, idx_t *outlen); + +#define base64_decode(in, inlen, out, outlen) \ + base64_decode_ctx (NULL, in, inlen, out, outlen) + +#define base64_decode_alloc(in, inlen, out, outlen) \ + base64_decode_alloc_ctx (NULL, in, inlen, out, outlen) + +# ifdef __cplusplus +} +# endif + +#endif /* BASE64_H */ -- cgit v1.2.3