GROOVY-11923: Provide a groovy-csv optional module

[paulk-asert]

No description provided.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 60.74766% with 42 lines in your changes missing coverage. Please review.
✅ Project coverage is 66.4888%. Comparing base (071f28f) to head (4f6c808).
⚠️ Report is 8 commits behind head on master.

Files with missing lines	Patch %	Lines
...roovy-csv/src/main/java/groovy/csv/CsvSlurper.java	63.6364%	16 Missing and 4 partials ⚠️
...roovy-csv/src/main/java/groovy/csv/CsvBuilder.java	65.2174%	13 Missing and 3 partials ⚠️
.../src/main/java/groovy/csv/CsvRuntimeException.java	0.0000%	6 Missing ⚠️

Additional details and impacted files

@@                Coverage Diff                 @@
##               master      #2462        +/-   ##
==================================================
- Coverage     66.4918%   66.4888%   -0.0031%     
- Complexity      30270      30312        +42     
==================================================
  Files            1411       1415         +4     
  Lines          118031     118217       +186     
  Branches        20989      21004        +15     
==================================================
+ Hits            78481      78601       +120     
- Misses          33074      33129        +55     
- Partials         6476       6487        +11     

Files with missing lines	Coverage Δ
.../src/main/java/groovy/csv/CsvRuntimeException.java	0.0000% <0.0000%> (ø)
...roovy-csv/src/main/java/groovy/csv/CsvBuilder.java	65.2174% <65.2174%> (ø)
...roovy-csv/src/main/java/groovy/csv/CsvSlurper.java	63.6364% <63.6364%> (ø)

... and 10 files with indirect coverage changes

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[daniellansun]

+1

[glaforge]

I remember there was this GroovyCSV library as well by the way:

• https://github.com/xlson/groovycsv (github repo)
• http://xlson.com/groovycsv/ (documentation)

Maybe it's worth having a look at its feature-set.
It's using OpenCSV library.

Via your PR, I discovered that Jackson was also parsing CSV!
It's nice to be able to read CSV lines as typed objects!

[paulk-asert]

My thinking with Jackson CSV processing was that if folks are already using TOML or YAML jackson libraries via groovy-toml or groovy-yaml, then they have the shared databind jars already in the classpath. And it means typed object support identical across all of those: CSV, TOML and YAML. But I am not averse to GroovyCSV, OpenCSV, or Apache Commons CSV.

[glaforge]

This is fine to use Jackson! And the rationale makes sense.
I really like the fact we can extracted proper strongly typed objects out of the CSV, that's pretty neat.