A CLI for recidiffist. If you're not sure what this is you probably want to look at that repo instead.

recidiffist comes as a single binary. Put it on your $PATH.

You can build it yourself, if you have leiningen installed, GraalVM installed (and GRAALVM_HOME configured) by calling lein native-image.

recidiffist takes no patameters, takes stuff to diff on stdin, and produces the diffs on stdout.

Examples are given with shell heredocs for legibility. A value changes from 1 to 2:

./recidiffist <<EOF
{"a": 1}
{"a": 2}
EOF
{"added":[],"changed":[[["a"],1,2]],"removed":[]}

Old key disappears, new key appears:

./recidiffist <<EOF
heredoc> {"a": 1}
heredoc> {"b": 2}
heredoc> EOF
{"added":[[["b"],2]],"changed":[],"removed":[[["a"],1]]}

You can pass n objects and get n-1 diffs:

./recidiffist <<EOF
heredoc> {"a": 1}
heredoc> {"a": 2}
heredoc> {"a": 3}
heredoc> EOF
{"added":[],"changed":[[["a"],1,2]],"removed":[]}{"added":[],"changed":[[["a"],2,3]],"removed":[]}

Suggested pattern: subshell:

(aws s3 cp s3://my-bucket/state-from-yesterday - ; ./script-that-gets-state-right-now-and-writes-to-stdout.sh ) | recidiffist

Alternatively, command grouping:

{ aws s3 cp s3://my-bucket/state-from-yesterday - ; ./script-that-gets-state-right-now-and-writes-to-stdout.sh ; } | recidiffist

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