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# git-chglog
![git-chglog](https://raw.githubusercontent.com/git-chglog/artwork/master/repo-banner%402x.png)
[![godoc.org](https://img.shields.io/badge/godoc-reference-blue.svg?style=flat-square)](https://godoc.org/github.com/git-chglog/git-chglog)
[![Travis](https://img.shields.io/travis/git-chglog/git-chglog.svg?style=flat-square)](https://travis-ci.org/git-chglog/git-chglog)
[![AppVeyor](https://img.shields.io/appveyor/ci/tsuyoshiwada/git-chglog/master.svg?style=flat-square)](https://ci.appveyor.com/project/tsuyoshiwada/git-chglog/branch/master)
[![Coverage Status](https://img.shields.io/coveralls/github/git-chglog/git-chglog.svg?style=flat-square)](https://coveralls.io/github/git-chglog/git-chglog?branch=master)
[![MIT License](http://img.shields.io/badge/license-MIT-blue.svg?style=flat-square)](https://github.com/git-chglog/git-chglog/blob/master/LICENSE)
> CHANGELOG generator implemented in Go (Golang).
> _Anytime, anywhere, Write your CHANGELOG._
## Table of Contents
* [Features](#features)
* [How it works](#how-it-works)
* [Getting Started](#getting-started)
- [Installation](#installation)
+ [Homebrew (for macOS users)](#homebrew-for-macos-users)
+ [Go users](#go-users)
- [Test Installation](#test-installation)
- [Quick Start](#quick-start)
* [CLI Usage](#cli-usage)
- [`tag query`](#tag-query)
* [Configuration](#configuration)
* [Templates](#templates)
* [Supported Styles](#supported-styles)
* [FAQ](#faq)
* [TODO](#todo)
* [Thanks](#thanks)
* [Contributing](#contributing)
- [Development](#development)
- [Feedback](#feedback)
* [CHANGELOG](#changelog)
* [Related Projects](#related-projects)
* [License](#license)
## Features
* :recycle: High portability
- It works with single binary. Therefore, any project (environment) can be used.
* :beginner: Simple usability
- The CLI usage is very simple and has low learning costs.
- For example, the simplest command is `$ git-chglog`.
* :rocket: High flexibility
- Commit message format and ...
- CHANGELOG's style (Template) and ...
- etc ...
## How it works
`git-chglog` internally uses the `git` command to get data to include in the CHANGELOG.
The basic steps are as follows.
1. Get all the tags.
1. Get the commits contained between `tagA` and `tagB`.
1. Execute with all tags corresponding to [tag query](#tag-query) that were specified in Step 1 and 2.
## Getting Started
We will start with installation and introduce the steps up to the automatic generation of the configuration file and template.
### Installation
Please install `git-chglog` in a way that matches your environment.
#### [Homebrew](https://brew.sh) (for macOS users)
```bash
$ brew tap git-chglog/git-chglog
$ brew install git-chglog
```
#### [Scoop](https://scoop.sh) (for Windows users)
```
$ scoop install git-chglog
```
#### Go users
```bash
$ go get -u github.com/git-chglog/git-chglog/cmd/git-chglog
```
---
If you are using another platform, you can download a binary from the [releases page](https://github.com/git-chglog/git-chglog/releases) and place it in a directory in your `$PATH`.
### Test Installation
You can check with the following command whether the `git-chglog` command was included in a directory that is in your `$PATH`.
```bash
$ git-chglog --version
# outputs the git-chglog version
```
### Quick Start
`git-chglog` requires configuration files and templates to generate a CHANGELOG.
However, it is a waste of time to create configuration files and templates from scratch.
Therefore we recommend using the `--init` option which will create them interactively :+1:
```bash
$ git-chglog --init
```
![init option demo](./docs/assets/init.gif)
---
You are now ready for configuration files and templates!
Let's immediately generate a CHANGELOG of your project.
By doing the following simple command, Markdown for your CHANGELOG is displayed on stdout.
```bash
$ git-chglog
```
Use `-o` (`--output`) option if you want to output to a file instead of stdout.
```bash
$ git-chglog -o CHANGELOG.md
```
---
You now know basic usage of `git-chglog`!
In order to make a better CHANGELOG, please refer to the following document and customize it.
## CLI Usage
```bash
$ git-chglog --help
USAGE:
git-chglog [options] <tag query>
There are the following specification methods for <tag query>.
1. <old>..<new> - Commit contained in <old> tags from <new>.
2. <name>.. - Commit from the <name> to the latest tag.
3. ..<name> - Commit from the oldest tag to <name>.
4. <name> - Commit contained in <name>.
OPTIONS:
--init generate the git-chglog configuration file in interactive
--config value, -c value specifies a different configuration file to pick up (default: ".chglog/config.yml")
--output value, -o value output path and filename for the changelogs. If not specified, output to stdout
--next-tag value treat unreleased commits as specified tags (EXPERIMENTAL)
--silent disable stdout output
--no-color disable color output [$NO_COLOR]
--no-emoji disable emoji output [$NO_EMOJI]
--tag-filter-pattern value, -p value regular expression of tag filter. Is specified, only matched tags will be picked
--help, -h show help
--version, -v print the version
EXAMPLE:
$ git-chglog
If <tag query> is not specified, it corresponds to all tags.
This is the simplest example.
$ git-chglog 1.0.0..2.0.0
The above is a command to generate CHANGELOG including commit of 1.0.0 to 2.0.0.
$ git-chglog 1.0.0
The above is a command to generate CHANGELOG including commit of only 1.0.0.
$ git-chglog $(git describe --tags $(git rev-list --tags --max-count=1))
The above is a command to generate CHANGELOG with the commit included in the latest tag.
$ git-chglog --output CHANGELOG.md
The above is a command to output to CHANGELOG.md instead of standard output.
$ git-chglog --config custom/dir/config.yml
The above is a command that uses a configuration file placed other than ".chglog/config.yml".
```
### `tag query`
You can specify which commits to include in the generation of CHANGELOG using `<tag query>`.
The table below shows Query patterns and summaries, and Query examples.
| Query | Description | Example |
|:---------------|:-----------------------------------------------|:----------------------------|
| `<old>..<new>` | Commit contained in `<new>` tags from `<old>`. | `$ git-chglog 1.0.0..2.0.0` |
| `<name>..` | Commit from the `<name>` to the latest tag. | `$ git-chglog 1.0.0..` |
| `..<name>` | Commit from the oldest tag to `<name>`. | `$ git-chglog ..2.0.0` |
| `<name>` | Commit contained in `<name>`. | `$ git-chglog 1.0.0` |
## Configuration
The `git-chglog` configuration is a yaml file. The default location is `.chglog/config.yml`.
Below is a complete list that you can use with `git-chglog`.
```yaml
bin: git
style: ""
template: CHANGELOG.tpl.md
info:
title: CHANGELOG
repository_url: https://github.com/git-chglog/git-chglog
options:
commits:
filters:
Type:
- feat
sort_by: Scope
commit_groups:
group_by: Type
sort_by: Title
title_maps:
feat: Features
header:
pattern: "<regexp>"
pattern_maps:
- PropName
issues:
prefix:
- #
refs:
actions:
- Closes
- Fixes
merges:
pattern: "^Merge branch '(\\w+)'$"
pattern_maps:
- Source
reverts:
pattern: "^Revert \"([\\s\\S]*)\"$"
pattern_maps:
- Header
notes:
keywords:
- BREAKING CHANGE
```
### `bin`
Git execution command.
| Required | Type | Default | Description |
|:---------|:-------|:--------|:------------|
| N | String | `"git"` | - |
### `style`
CHANGELOG style. Automatic linking of issues and notices, initial value setting such as merges etc. are done automatically.
| Required | Type | Default | Description |
|:---------|:-------|:---------|:-------------------------------------------------------|
| N | String | `"none"` | Should be `"github"` `"gitlab"` `"bitbucket"` `"none"` |
### `template`
Path for the template file. It is specified by a relative path from the setting file. Absolute paths are also ok.
| Required | Type | Default | Description |
|:---------|:-------|:---------------------|:------------|
| N | String | `"CHANGELOG.tpl.md"` | - |
### `info`
Metadata for CHANGELOG. Depending on Style, it is sometimes used in processing, so it is recommended to specify it.
| Key | Required | Type | Default | Description |
|:-----------------|:---------|:-------|:--------------|:-----------------------|
| `title` | N | String | `"CHANGELOG"` | Title of CHANGELOG. |
| `repository_url` | N | String | none | URL of git repository. |
### `options`
Options used to process commits.
#### `options.commits`
Options concerning the acquisition and sort of commits.
| Key | Required | Type | Default | Description |
|:----------|:---------|:------------|:----------|:--------------------------------------------------------------------------------------------------------------------|
| `filters` | N | Map in List | none | Filter by using `Commit` properties and values. Filtering is not done by specifying an empty value. |
| `sort_by` | N | String | `"Scope"` | Property name to use for sorting `Commit`. See [Commit](https://godoc.org/github.com/git-chglog/git-chglog#Commit). |
#### `options.commit_groups`
Options for groups of commits.
| Key | Required | Type | Default | Description |
|:-------------|:---------|:------------|:----------|:-------------------------------------------------------------------------------------------|
| `group_by` | N | String | `"Type"` | Property name of `Commit` to be grouped into `CommitGroup`. See [CommitGroup][doc-commit]. |
| `sort_by` | N | String | `"Title"` | Property name to use for sorting `CommitGroup`. See [CommitGroup][doc-commit-group]. |
| `title_maps` | N | Map in List | none | Map for `CommitGroup` title conversion. |
#### `options.header`
This option is used for parsing the commit header.
| Key | Required | Type | Default | Description |
|:---------------|:---------|:-------|:--------|:--------------------------------------------------------------------------------------------------------|
| `pattern` | Y | String | none | A regular expression to use for parsing the commit header. |
| `pattern_maps` | Y | List | none | A rule for mapping the result of `HeaderPattern` to the property of `Commit`. See [Commit][doc-commit]. |
#### `options.issues`
This option is used to detect issues.
| Key | Required | Type | Default | Description |
|:---------|:---------|:-----|:--------|:-------------------------------------------|
| `prefix` | N | List | none | Prefix used for issues. (e.g. `#`, `#gh-`) |
#### `options.refs`
This option is for parsing references.
| Key | Required | Type | Default | Description |
|:----------|:---------|:-----|:--------|:-----------------------------------------------|
| `actions` | N | List | none | Word list of `Ref.Action`. See [Ref][doc-ref]. |
#### `options.merges`
Options to detect and parse merge commits.
| Key | Required | Type | Default | Description |
|:---------------|:---------|:-------|:--------|:------------------------------------------|
| `pattern` | N | String | none | Similar to `options.header.pattern`. |
| `pattern_maps` | N | List | none | Similar to `options.header.pattern_maps`. |
#### `options.reverts`
Options to detect and parse revert commits.
| Key | Required | Type | Default | Description |
|:---------------|:---------|:-------|:--------|:------------------------------------------|
| `pattern` | N | String | none | Similar to `options.header.pattern`. |
| `pattern_maps` | N | List | none | Similar to `options.header.pattern_maps`. |
#### `options.notes`
Options to detect notes contained in commit bodies.
| Key | Required | Type | Default | Description |
|:-----------|:---------|:-----|:--------|:-----------------------------------------------------------------------------------------------------|
| `keywords` | N | List | none | Keyword list to find `Note`. A semicolon is a separator, like `<keyword>:` (e.g. `BREAKING CHANGE`). |
## Templates
The `git-chglog` template uses the `text/template` package. For basic usage please refer to the following.
> [text/template](https://golang.org/pkg/text/template/)
If you are not satisfied with the prepared template please try customizing one.
---
The basic templates are as follows.
**Example:**
```markdown
{{ if .Versions -}}
<a name="unreleased"></a>
## [Unreleased]
{{ if .Unreleased.CommitGroups -}}
{{ range .Unreleased.CommitGroups -}}
### {{ .Title }}
{{ range .Commits -}}
- {{ if .Scope }}**{{ .Scope }}:** {{ end }}{{ .Subject }}
{{ end }}
{{ end -}}
{{ end -}}
{{ end -}}
{{ range .Versions }}
<a name="{{ .Tag.Name }}"></a>
## {{ if .Tag.Previous }}[{{ .Tag.Name }}]{{ else }}{{ .Tag.Name }}{{ end }} - {{ datetime "2006-01-02" .Tag.Date }}
{{ range .CommitGroups -}}
### {{ .Title }}
{{ range .Commits -}}
- {{ if .Scope }}**{{ .Scope }}:** {{ end }}{{ .Subject }}
{{ end }}
{{ end -}}
{{- if .RevertCommits -}}
### Reverts
{{ range .RevertCommits -}}
- {{ .Revert.Header }}
{{ end }}
{{ end -}}
{{- if .MergeCommits -}}
### Pull Requests
{{ range .MergeCommits -}}
- {{ .Header }}
{{ end }}
{{ end -}}
{{- if .NoteGroups -}}
{{ range .NoteGroups -}}
### {{ .Title }}
{{ range .Notes }}
{{ .Body }}
{{ end }}
{{ end -}}
{{ end -}}
{{ end -}}
{{- if .Versions }}
[Unreleased]: {{ .Info.RepositoryURL }}/compare/{{ $latest := index .Versions 0 }}{{ $latest.Tag.Name }}...HEAD
{{ range .Versions -}}
{{ if .Tag.Previous -}}
[{{ .Tag.Name }}]: {{ $.Info.RepositoryURL }}/compare/{{ .Tag.Previous.Name }}...{{ .Tag.Name }}
{{ end -}}
{{ end -}}
{{ end -}}
```
See the godoc [RenderData][doc-render-data] documentation for available variables.
## Supported Styles
| Name | Status | Features |
|:-------------------------------------------|:-------------------|:-------------------------------------------------------|
| [GitHub](https://github.com/) | :white_check_mark: | Mentions automatic link. Automatic link to references. |
| [GitLab](https://about.gitlab.com/) | :white_check_mark: | Mentions automatic link. Automatic link to references. |
| [Bitbucket](https://bitbucket.org/product) | :white_check_mark: | Mentions automatic link. Automatic link to references. |
> :memo: Even with styles that are not yet supported, it is possible to make ordinary CHANGELOG.
## FAQ
<details>
<summary>Why do not you output files by default?</summary>
This is not for the purpose of completely automating the generation of CHANGELOG files, it is only for assisting generation.
It is ideal to describe everything included in CHANGELOG in your commits. But actually it is very difficult to do it perfectly.
There are times when you need to edit the generated output to write a great CHANGELOG.
By displaying it on the standard output, it makes it easy to change the contents.
</details>
<details>
<summary>Can I commit CHANGELOG changes before creating tags?</summary>
Yes, it can be solved by using the `--next-tag` flag.
For example, let's say you want to upgrade your project to `2.0.0`.
You can create CHANGELOG containing `2.0.0` as follows.
```bash
$ git-chglog --next-tag 2.0.0 -o CHANGELOG.md
$ git commit -am "release 2.0.0"
$ git tag 2.0.0
```
The point to notice is that before actually creating a tag with `git`, it is conveying the next version with `--next-tag` :+1:
This is a step that is necessary for project operation in many cases.
</details>
<details>
<summary>Can I generate a CHANGELOG based on certain tags?</summary>
Yes, it can be solved by use the `--tag-filter-pattern` flag.
For example, the following command will only include tags starting with "v":
```bash
$ git-chglog --tag-filter-pattern '^v'
```
</details>
## TODO
* [x] Windows Support
* [x] More styles (GitHub, GitLab, Bitbucket :tada:)
* [ ] Snippetization of configuration files (improvement of reusability)
* [ ] More test test test ... (and example)
## Thanks
`git-chglog` is inspired by [conventional-changelog](https://github.com/conventional-changelog/conventional-changelog). Thank you!
## Contributing
We alway welcome your contributions :clap:
### Development
1. Fork (https://github.com/git-chglog/git-chglog) :tada:
1. Create a feature branch :coffee:
1. Run test suite with the `$ make test` command and confirm that it passes :zap:
1. Commit your changes :memo:
1. Rebase your local changes against the `master` branch :bulb:
1. Create new Pull Request :love_letter:
Bugs, feature requests and comments are more than welcome in the [issues](https://github.com/git-chglog/git-chglog/issues).
### Feedback
I would like to make `git-chglog` a better tool.
The goal is to be able to use in various projects.
Therefore, your feedback is very useful.
I am very happy to tell you your opinions on Issues and PR :heart:
## CHANGELOG
See [CHANGELOG.md](./CHANGELOG.md)
## Related Projects
* [git-chglog/artwork](https://github.com/git-chglog/artwork) - Assets for `git-chglog`.
## License
[MIT © tsuyoshiwada](./LICENSE)
[doc-commit]: https://godoc.org/github.com/git-chglog/git-chglog#Commit
[doc-commit-group]: https://godoc.org/github.com/git-chglog/git-chglog#Commit
[doc-ref]: https://godoc.org/github.com/git-chglog/git-chglog#Ref
[doc-render-data]: https://godoc.org/github.com/git-chglog/git-chglog#RenderData
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