Update rewrite algorithm by coping code from
go/internal/work/buildid:updateBuildID.
Probably, this is not the best option. We could provide high-level API
in cmd/internal/buildid in the future.
Fixes#23181
Change-Id: I336a7c50426ab39bc9998b55c372af61a4fb21a7
Reviewed-on: https://go-review.googlesource.com/84735
Reviewed-by: Russ Cox <rsc@golang.org>
This CL does a few things.
1. It moves the existing "read a build ID" code out of the go command
and into cmd/internal/buildid.
2. It adds new code there to "write a build ID".
3. It adds better tests.
4. It encapsulates cmd/internal/buildid into a new standalone program
"go tool buildid".
The go command is going to use the new "write a build ID" functionality
in a future CL. Adding the separate "go tool buildid" gives "go build -x"
a printable command to explain what it is doing in that new step.
(This is similar to the go command printing "go tool pack" commands
equivalent to the actions it is taking, even though it's not invoking pack
directly.) Keeping go build -x honest means that other build systems can
potentially keep up with the go command.
Change-Id: I01c0a66e30a80fa7254e3f2879283d3cd7aa03b4
Reviewed-on: https://go-review.googlesource.com/69053
Reviewed-by: David Crawshaw <crawshaw@golang.org>
Hiroshi Ioka
Russ Cox