72 lines
1.6 KiB
C++
72 lines
1.6 KiB
C++
/* go-sha1.cc -- Go frontend interface to gcc backend.
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Copyright (C) 2016-2021 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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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 GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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#include "go-sha1.h"
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#include "sha1.h"
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class Gcc_sha1_helper : public Go_sha1_helper
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{
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public:
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Gcc_sha1_helper() : ctx_(new sha1_ctx) { sha1_init_ctx(this->ctx_); }
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~Gcc_sha1_helper();
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// Incorporate 'len' bytes from 'buffer' into checksum.
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void
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process_bytes(const void* buffer, size_t len);
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// Finalize checksum and return in the form of a string.
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std::string
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finish();
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private:
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sha1_ctx *ctx_;
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};
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Gcc_sha1_helper::~Gcc_sha1_helper()
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{
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delete ctx_;
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}
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void
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Gcc_sha1_helper::process_bytes(const void* buffer, size_t len)
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{
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sha1_process_bytes(buffer, len, this->ctx_);
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}
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std::string
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Gcc_sha1_helper::finish()
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{
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// Use a union to provide the required alignment.
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union
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{
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char checksum[checksum_len];
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long align;
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} u;
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sha1_finish_ctx(this->ctx_, u.checksum);
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return std::string(u.checksum, checksum_len);
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}
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Go_sha1_helper*
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go_create_sha1_helper()
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{
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return new Gcc_sha1_helper();
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}
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