Add file-content launch substitution

ros2 / launch

Tools for launching multiple processes and for writing tests involving multiple processes.

Apache License 2.0

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Add file-content launch substitution #708

Closed cottsay closed 1 year ago

cottsay commented 1 year ago

This substitution implements a portable mechanism to read the contents of a file on disk. This procedure is used in various scenarios throughout ROS 2, and currently relies on exec and command substitutions to read files.

I'm particularly interested in review of the substitution name.

Reference implementation: ros2/demos#627

Closes #707

Linux
Linux-aarch64
Windows

cottsay commented 1 year ago

@mergifyio backport iron

mergify[bot] commented 1 year ago

backport iron

✅ Backports have been created

* [#709 Add file-content launch substitution (backport #708)](https://github.com/ros2/launch/pull/709) has been created for branch `iron`