Wladimir J. van der Laan d202054675 Merge #21052: refactor: Replace fs::unique_path with GetUniquePath(path) calls
1bca2aa694 Introduce GetUniquePath(base) helper method to replace boost::filesystem::unique_path() which is not available in std::filesystem. (Kiminuo)

Pull request description:

  This PR makes it easier in #20744 to remove our dependency on the `boost::filesystem::unique_path()` function which does not have a direct equivalent in C++17.

  This PR attempts to re-implement `boost::filesystem::unique_path()` as `GetUniquePath(path)` but the implementations are not meant to be the same.

  Note:

  * Boost 1.75.0 implementation of `unique_path`: 9cab675b71/src/unique_path.cpp (L235)

  * In the previous implementation, I attempted to add:
      ```cpp
      fs::path GetUniquePath(const fs::path& base)
      {
          FastRandomContext rnd;
          fs::path tmpFile = base / HexStr(rnd.randbytes(8));
          return tmpFile;
      }
      ```

      to `fs.cpp` but this leads to a circular dependency: "fs -> random -> logging -> fs". That is why the modified implementation adds a new file.

ACKs for top commit:
  laanwj:
    Code review ACK 1bca2aa694
  ryanofsky:
    Code review ACK 1bca2aa694. It's a simple change and extra test coverage is nice

Tree-SHA512: f324bdf0e254160c616b5033c3ece33d87db23eb0135acee99346ade7b5cf0d30f3ceefe359a25a8e9b53ba8e4419f459c2bdd369e10fc0152ce95031d1f221c
2021-02-09 22:22:13 +01:00

Bitcoin Core integration/staging tree

https://bitcoincore.org

What is Bitcoin?

Bitcoin is an experimental digital currency that enables instant payments to anyone, anywhere in the world. Bitcoin uses peer-to-peer technology to operate with no central authority: managing transactions and issuing money are carried out collectively by the network. Bitcoin Core is the name of open source software which enables the use of this currency.

For more information, as well as an immediately usable, binary version of the Bitcoin Core software, see https://bitcoincore.org/en/download/, or read the original whitepaper.

License

Bitcoin Core is released under the terms of the MIT license. See COPYING for more information or see https://opensource.org/licenses/MIT.

Development Process

The master branch is regularly built (see doc/build-*.md for instructions) and tested, but it is not guaranteed to be completely stable. Tags are created regularly from release branches to indicate new official, stable release versions of Bitcoin Core.

The https://github.com/bitcoin-core/gui repository is used exclusively for the development of the GUI. Its master branch is identical in all monotree repositories. Release branches and tags do not exist, so please do not fork that repository unless it is for development reasons.

The contribution workflow is described in CONTRIBUTING.md and useful hints for developers can be found in doc/developer-notes.md.

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Developers are strongly encouraged to write unit tests for new code, and to submit new unit tests for old code. Unit tests can be compiled and run (assuming they weren't disabled in configure) with: make check. Further details on running and extending unit tests can be found in /src/test/README.md.

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Manual Quality Assurance (QA) Testing

Changes should be tested by somebody other than the developer who wrote the code. This is especially important for large or high-risk changes. It is useful to add a test plan to the pull request description if testing the changes is not straightforward.

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