| /* go-sha1.cc -- Go frontend interface to gcc backend. |
| Copyright (C) 2016-2022 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(); |
| } |