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/* go-sha1.cc -- Go frontend interface to gcc backend.
Copyright (C) 2016-2018 Free Software Foundation, Inc.
This file is part of GCC.
GCC 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 3, or (at your option) any later
version.
GCC 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 GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#include "go-sha1.h"
#include "sha1.h"
class Gcc_sha1_helper : public Go_sha1_helper
{
public:
Gcc_sha1_helper() : ctx_(new sha1_ctx) { sha1_init_ctx(this->ctx_); }
~Gcc_sha1_helper();
// Incorporate 'len' bytes from 'buffer' into checksum.
void
process_bytes(const void* buffer, size_t len);
// Finalize checksum and return in the form of a string.
std::string
finish();
private:
sha1_ctx *ctx_;
};
Gcc_sha1_helper::~Gcc_sha1_helper()
{
delete ctx_;
}
void
Gcc_sha1_helper::process_bytes(const void* buffer, size_t len)
{
sha1_process_bytes(buffer, len, this->ctx_);
}
std::string
Gcc_sha1_helper::finish()
{
// Use a union to provide the required alignment.
union
{
char checksum[checksum_len];
long align;
} u;
sha1_finish_ctx(this->ctx_, u.checksum);
return std::string(u.checksum, checksum_len);
}
Go_sha1_helper*
go_create_sha1_helper()
{
return new Gcc_sha1_helper();
}
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