tree b3e6630c1de1b58b4679f16c064cd7c8487d062f
parent 82a397b208e92bfc6425d55989a1df419fe292dc
author Laszlo Csomor <laszlocsomor@google.com> 1549443295 -0800
committer Copybara-Service <copybara-piper@google.com> 1549443392 -0800

Windows, test wrapper: implement IFStream

Implement a buffered input stream with look-ahead
support.

This class is necessary to support CDATA-encoding
large test logs that would be inconvenient to read
into memory.

Unfortunately STL doesn't seem to offer a buffered
file stream object that takes a HANDLE or FILE*.
The std::ifstream, which seems to implement a
buffered input stream, can only be constructed
using an octet-stream path, which makes it
impossible to open paths by WCHAR strings on
Windows, while long paths must be opened using
WCHAR strings.

See https://github.com/bazelbuild/bazel/issues/5508

Closes #7214.

PiperOrigin-RevId: 232630569