Adds the flowing to the tool:
- A new `--exact-match-only` flag to be used with `--packages` to prevent group matching (i.e., a selection like `--packages=path_provider --exact-match-only` would only run on `packages/path_provider/path_provider`, not `packages/path_provider/*`).
- Two new `publish` command flags:
- `--tag-for-auto-publish`, to do all the steps that `publish` currently does except for the real `pub publish`, so it would dry-run the publish and then create and push the tag if successful.
- `--already-tagged`, to skip the step of adding and pushing a tag, and replace it with a check that `HEAD` already has the expected tag.
This set of additions supports a workflow where the current `release` step is changed to use `--tag-for-auto-publish`, and then the separate auto-publish system would publish each package with `... publish --already-tagged --packages=<some package> --exact-match-only`.
See https://github.com/flutter/packages/pull/5005#discussion_r1344542422 for previous discussion/context.
Part of https://github.com/flutter/flutter/issues/126827
Refactors colorization to a centralized utility file, and makes it all conditional on `stdout` having ANSI escape support. This makes the output more readable on LUCI, which unlike the Cirrus log display doesn't handle ANSI.
Fixes https://github.com/flutter/flutter/issues/89392
When writing pub credentials, ensure that the target paths exists before
trying to write the file. In the past this would have worked because the
credentials were in the pub cache, and the pub cache would exist by the
time the repo tooling code was running. The new location, however, is a
configuration directory that is unlikely to exist before anything
involving `pub` credentials has run.
Should fix the latest `release` failure:
https://github.com/flutter/packages/actions/runs/4949005383/jobs/8854219784
As of Dart 3.0 (Flutter 3.10), the location that the tool was using for
the pub cache wasn't being read, breaking autopublish in CI. This
updates to the new location, and adds tests for it.
Should fix the fact that the `release` step hangs on every package
change now.
