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mungye

Merge JSONs/YAMLs together!

Example:

file2.json will be converted to YAML, then merged with file1.yaml and the result will be sent to STDOUT:

$ mungye file1.yaml file2.json

Files are always open in read only mode. STDIN can be used as a source too, simply use a - (dash) to read from it. The only requirements (at the moment) when using STDIN is that the --stdin-format option is then required, because right now the tool can't guess the format of the data coming from STDIN.

There's also the --force-format option, to force the output to have a specific format, like (reusing the previous example):

$ mungye file1.yaml file2.json --force-format=json

This will work exactly the same as the previous example except that the result will be JSON instead of YAML.

Since the file arguments list must have a list of one filename, we can also use this tool to convert between formats, like:

# Convert JSON data to YAML data
$ mungye file2.json --force-format=yaml

# This is essentially the same, now this illustrates the usage with STDIN
$ cat file2.json | mungye - --force-format=yaml

TODO

  • Gather more test data
  • Add unit tests
  • Integration tests (at the command level, look into assert_cmd)
  • Add TOML support
  • Implement more array merging strategies (like extend and zip)
  • Look into different strategies when folding the argument list
  • Look into performance improvements
  • Look into async-std and see if can have better performance (and if it's worth the trouble)