xmlencoderclose: linter that checks xml.Encoder is closed

[adamdecaf]

xmlencoderclose is a linter which checks to make sure that xml.Encoder instances are closed. Without closing an Encoder it may not flush all data. Closing encoders also verifies the XML has balanced start/end tags.

We've identified a need for this linter at Moov and it has found several bugs.

$ xmlencoderclose ./...
/Users/adam/code/src/github.com/moov-io/1120x/pkg/utils/types.go:72:27: Encoder.Close must be called

$ xmlencoderclose ./...
/Users/adam/code/src/github.com/moov-io/fincen/pkg/service/handlers.go:109:18: Encoder.Close must be called

[boring-cyborg]

Hey, thank you for opening your first Pull Request !

[CLAassistant]

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[ldez]

In order for a pull request adding a linter to be reviewed, the linter and the PR must follow some requirements.

• The CLA must be signed

Pull Request Description

• It must have a link to the linter repository.
• It must provide a short description of the linter.

Linter

• It must not be a duplicate of another linter or a rule of a linter. (the team will help to verify that)
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• It must have a valid tag, ex: v1.0.0, v0.1.0.
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The Linter Tests Inside Golangci-lint

• They must have at least one std lib import.
• They must work with T=<name of the linter test file>.go make test_linters. (the team will help to verify that)

.golangci.reference.yml

• The linter must be added to the list of available linters (alphabetical case-insensitive order).
  • enable and disable options
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  • The default values must be defined in a comment.
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Others Requirements

• The files (tests and linter) inside golangci-lint must have the same name as the linter.
• The .golangci.yml of golangci-lint itself must not be edited and the linter must not be added to this file.
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• The load mode (WithLoadMode(...)):
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  • goanalysis.LoadModeTypesInfo required WithLoadForGoAnalysis() in the Manager.GetAllSupportedLinterConfigs(...)
• The version in WithSince(...) must be the next minor version (v1.X.0) of golangci-lint.

Recommendations

• The linter should not use SSA. (SSA can be a problem with generics)
• The linter repository should have a readme and linting.
• The linter should be published as a binary. (useful to diagnose bug origins)

---

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