For coreutils, there are two build artifacts:
1. multicall executable (each utility is a separate static library)
2. individual utilities (still separate library with main wrapper)
To avoid namespace collision, each utility crate is defined as
"uu_{CMD}". The end user only sees the original utility name. This
simplifies build.rs.
Also, the thin wrapper for the main() function is no longer contained in
the crate. It has been separated into a dedicated file. This was
necessary to work around Cargo's need for the crate name attribute to
match the name in the respective Cargo.toml.
Since several utilities check if the standard streams are interactive, I
moved this into the uucore::fs library as is_std*_interactive(). I also
added Windows support for these methods, which only return false (or at
least until someone finds a way to support this).
This allows a user to create builds with or without the Unix-specific
utilities. Right now the Makefile handles this, but this is needed to
migrate away from make.
To build Unix-specific utilities (default):
cargo build
(or)
cargo build --features unix --no-default-features
To build without the Unix-specific utilities:
cargo build --features generic --no-default-features
When determining the range from which to select portions of a line, the
upper limit of the range is a usize. The maximum upper value is
usize::MAX, but at one point this value is incremented, causing an
overflow. By setting the maximum upper value to usize::MAX-1, the bug is
averted. Since the upper limit of the range is an index (thus, ranging
from 0 to 2^64-1 for 64-bit platforms), the maximum usize should not be
reached.
I separated test's main() into a separate file to override Cargo's
requirement for matching crate names. I had to update the build command
to use a special extern reference for test.
Fixes issues caused by #728.
To avoid linking issues with Rust's libtest, the crate for the test
utility was changed to 'uutest'. However, the user doesn't need to see
this so a few hoops were jumped through to make this transparent.
I also updated the make rules to build the individual features first and
then uutils. This makes 'make && make test' look more organized.
