Start using Formatting Tools

[ibaned]

I've created a Wiki page here:

https://github.com/gahansen/Albany/wiki/Formatting-Tools

Which describes clang-format, a tool to automatically format C++ files, and xmllint, a tool which automatically formats XML files.

Based on discussion in the weekly phone call, possible uses of these tools include:

• Albany developers as a team agree on one or more clang-format styles that accurately match our own style(s)
  • certain packages such as LCM may want a different style, this could be supported with a file src/LCM/.clang-format
• when you substantially modify a C++ file, consider using clang-format to also clean up the styling of it
• when you substantially modify an XML file, consider using xmllint to clean up its indentation
• we may want to go through the codebase and apply clang-format to most of the source
• likewise we could apply xmllint to most of the input.xml files

As always, this issue is here to gather feedback on this. We may start to iterate on a .clang-format file in the near future.

[ibaned]

@agsalin @gahansen @ikalash

[ibaned]

@bgranzow

[lxmota]

For LCM we try to follow the Google C++ coding standards. For formatting, I use Eclipse with the BSD-Allman style of formatting. I'll check clang-format to see what it does.

[ibaned]

Google is one of its styles, and is the one I base my format on. One thing that might be of use is to choose a representative C++ file and we can look at it under different settings.