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https://github.com/vbatts/git-validation

utility for validating git commits (in a CI like GH actions, CircleCI, Jenkins, etc.)
https://github.com/vbatts/git-validation

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utility for validating git commits (in a CI like GH actions, CircleCI, Jenkins, etc.)

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# git-validation

A way to do validation on git commits.
[![Travis Status](https://travis-ci.org/vbatts/git-validation.svg?branch=master)](https://travis-ci.org/vbatts/git-validation)
[![GithubActions Status](https://github.com/vbatts/git-validation/actions/workflows/go.yml/badge.svg)](https://github.com/vbatts/git-validation/actions/workflows/go.yml)

## install

```shell
go install github.com/vbatts/git-validation@latest
```

## usage

The flags

```shell
vbatts@valse ~/src/vb/git-validation (master *) $ git-validation -h
Usage of git-validation:
-D debug output
-d string
git directory to validate from (default ".")
-list-rules
list the rules registered
-range string
use this commit range instead
-run string
comma delimited list of rules to run. Defaults to all.
-v verbose
```

The entire default rule set is run by default:

```shell
vbatts@valse ~/src/vb/git-validation (master) $ git-validation -list-rules
"dangling-whitespace" -- checking the presence of dangling whitespaces on line endings
"DCO" -- makes sure the commits are signed
"message_regexp" -- checks the commit message for a user provided regular expression
"short-subject" -- commit subjects are strictly less than 90 (github ellipsis length)
```

Or, specify comma-delimited rules to run:

```shell
vbatts@valse ~/src/vb/git-validation (master) $ git-validation -run DCO,short-subject
* b243ca4 "README: adding install and usage" ... PASS
* d614ccf "*: run tests in a runner" ... PASS
* b9413c6 "shortsubject: add a subject length check" ... PASS
* 5e74abd "*: comments and golint" ... PASS
* 07a982f "git: add verbose output of the commands run" ... PASS
* 03bda4b "main: add filtering of rules to run" ... PASS
* c10ba9c "Initial commit" ... PASS
```

Verbosity shows each rule's output:

```shell
vbatts@valse ~/src/vb/git-validation (master) $ git-validation -v
* d614ccf "*: run tests in a runner" ... PASS
- PASS - has a valid DCO
- PASS - commit subject is 72 characters or less! *yay*
* b9413c6 "shortsubject: add a subject length check" ... PASS
- PASS - has a valid DCO
- PASS - commit subject is 72 characters or less! *yay*
* 5e74abd "*: comments and golint" ... PASS
- PASS - has a valid DCO
- PASS - commit subject is 72 characters or less! *yay*
* 07a982f "git: add verbose output of the commands run" ... PASS
- PASS - has a valid DCO
- PASS - commit subject is 72 characters or less! *yay*
* 03bda4b "main: add filtering of rules to run" ... PASS
- PASS - has a valid DCO
- PASS - commit subject is 72 characters or less! *yay*
* c10ba9c "Initial commit" ... PASS
- PASS - has a valid DCO
- PASS - commit subject is 72 characters or less! *yay*
```

Here's a failure:

```shell
vbatts@valse ~/src/vb/git-validation (master) $ git-validation
* 49f51a8 "README: adding install and usage" ... FAIL
- FAIL - does not have a valid DCO
* d614ccf "*: run tests in a runner" ... PASS
* b9413c6 "shortsubject: add a subject length check" ... PASS
* 5e74abd "*: comments and golint" ... PASS
* 07a982f "git: add verbose output of the commands run" ... PASS
* 03bda4b "main: add filtering of rules to run" ... PASS
* c10ba9c "Initial commit" ... PASS
1 issues to fix
vbatts@valse ~/src/vb/git-validation (master) $ echo $?
1
```

Excluding paths that are out of the scope of your project:

```shell
vbatts@valse ~/src/vb/git-validation (master) $ GIT_CHECK_EXCLUDE="./vendor:./git/testdata" git-validation -q -run dangling-whitespace
...
```

using the `GIT_CHECK_EXCLUDE` environment variable. Multiple paths should be separated by colon(`:`)

## contributing

When making a change, verify it with:

```shell
go run mage.go lint vet build test
```

## Rules

Default rules are added by registering them to the `validate` package.
Usually by putting them in their own package.
See [`./rules/`](./rules/).
Feel free to contribute more.

Otherwise, by using `validate` package API directly, rules can be handed directly to the `validate.Runner`.