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GitHub Changelog Generator
==================

  - [Installation](#installation)
  - [Output example](#output-example)
  - [Usage](#usage)
    - [Params](#params)
    - [GitHub token](#github-token)
  - [Features and advantages of this project](#features-and-advantages-of-this-project)
    - [Alternatives](#alternatives)
    - [Projects using this library](#projects-using-this-library)
  - [Am I missed some essential feature?](#am-i-missed-some-essential-feature)
  - [Contributing](#contributing)
  - [License](#license)

 
### Changelog generation has never been so easy:

**Fully automate changelog generation** - This gem generate change log file based on **tags**, **issues** and merged **pull requests** (and split them to separate lists according labels) from :octocat: GitHub Issue Tracker.

Since now you don't have to fill your `CHANGELOG.md` manually: just run script, relax and take a cup of :coffee: before your next release! :tada:

### *What’s the point of a change log?*
To make it easier for users and contributors to see precisely what notable changes have been made between each release (or version) of the project.

## Installation

	[sudo] gem install github_changelog_generator

## Output example

- Look at **[CHANGELOG.md](https://github.com/skywinder/Github-Changelog-Generator/blob/master/CHANGELOG.md)** for this project
- [ActionSheetPicker-3.0/CHANGELOG.md](https://github.com/skywinder/ActionSheetPicker-3.0/blob/master/CHANGELOG.md)  was generated by command:

		github_changelog_generator -u skywinder -p ActionSheetPicker-3.0

- In general it looks like this:

> ## [1.2.5](https://github.com/skywinder/Github-Changelog-Generator/tree/1.2.5) (2015-01-15)
> 
> [Full Changelog](https://github.com/skywinder/Github-Changelog-Generator/compare/1.2.4...1.2.5)
> 
> **Implemented enhancements:**
> 
> - Use milestone to specify in which version bug was fixed [\#22](https://github.com/skywinder/Github-Changelog-Generator/issues/22)
> 
> **Fixed bugs:**
> 
> - Error when trying to generate log for repo without tags [\#32](https://github.com/skywinder/Github-Changelog-Generator/issues/32)
> 
> **Merged pull requests:**
> 
> - PrettyPrint class is included using lowercase 'pp' [\#43](https://github.com/skywinder/Github-Changelog-Generator/pull/43) ([schwing](https://github.com/schwing))
> 
> - support enterprise github via command line options [\#42](https://github.com/skywinder/Github-Changelog-Generator/pull/42) ([glenlovett](https://github.com/glenlovett))


## Usage
**It's really simple**: 

- If your **git remote** `origin` refer to your GitHub repo, then just go to your project folder and run:

		github_changelog_generator

-  or from anywhere:
    - `github_changelog_generator -u github_username -p github_project`
    - `github_changelog_generator  github_username/github_project`
     
As output you will get `CHANGELOG.md` file with pretty *Markdown-formatted* changelog.

### Params
Type `github_changelog_generator --help` for detailed usage.

    Usage: changelog_generator [options]
    -u, --user [USER]                Username of the owner of target GitHub repo
    -p, --project [PROJECT]          Name of project on GitHub
    -t, --token [TOKEN]              To make more than 50 requests per hour your GitHub token required. You can generate it here: https://github.com/settings/tokens/new
    -f, --date-format [FORMAT]       Date format. Default is %d/%m/%y
    -o, --output [NAME]              Output file. Default is CHANGELOG.md
        --[no-]verbose               Run verbosely. Default is true
        --[no-]issues                Include closed issues to changelog. Default is true
        --[no-]issues-wo-labels      Include closed issues without labels to changelog. Default is true
        --[no-]pr-wo-labels          Include pull requests without labels to changelog. Default is true
        --[no-]pull-requests         Include pull-requests to changelog. Default is true
        --[no-]filter-by-milestone   Use milestone to detect when issue was resolved. Default is true
        --[no-]author                Add author of pull-request in the end. Default is true
        --unreleased-only            Generate log from unreleased closed issues only.
        --[no-]unreleased            Add to log unreleased closed issues. Default is true
        --[no-]compare-link          Include compare link between older version and newer version. Default is true
        --include-labels  x,y,z      Issues only with that labels will be included to changelog. Default is 'bug,enhancement'
        --exclude-labels  x,y,z      Issues with that labels will be always excluded from changelog. Default is 'duplicate,question,invalid,wontfix'
        --github-site [URL]          The Enterprise Github site on which your project is hosted.
        --github-api [URL]           The enterprise endpoint to use for your Github API.
    -v, --version                    Print version number
    -h, --help                       Displays Help


### GitHub token

Since GitHub allow to make only 50 requests without authentication it's recommended to run this script with token (`-t, --token` option)

**You can easily [generate it here](https://github.com/settings/applications)**.

And:

- Run with key `-t [your-16-digit-token]` 
- Or set environment variable `CHANGELOG_GITHUB_TOKEN` and specify there your token. 
 		
	i.e. add to your `~/.bash_profile` or `~/.zshrc` or any other place to load ENV variables string :

        export CHANGELOG_GITHUB_TOKEN="your-40-digit-github-token"

So, if you got error like this:
>! /Library/Ruby/Gems/2.0.0/gems/github_api-0.12.2/lib/github_api/response/raise_error.rb:14:in `on_complete'

It's time to create this token or wait for 1 hour before GitHub reset the counter for your IP.

##Features and advantages of this project
- Generate canonical, neat change log file, followed by [basic change log guidlines](http://keepachangelog.com/) :gem:
- Possible to generate **Unreleased** changes (closed issues that have not released yet) :dizzy:
- **GitHub Enterprise support** via command line options! :factory:
- Flexible format **customisation**:
    - **Customize** issues, that **should be added** to changelog :eight_spoked_asterisk:
    - **Custom date format** supported :date:
    - Ability to manually specify in which version issue was fixed (in case, when closed date is not match) by setting `milestone` of issue the same name as tag of  required version :pushpin:
    - Automatically **exclude specific issues**, not-related to change log (any issue, that has label `question` `duplicate` `invalid` `wontfix`by default)  :scissors:
- **Distinguish** issues **according labels**. :mag_right:
    - Merged pull requests (all `merged` pull-requests) :twisted_rightwards_arrows:
    - Bug fixes (by label `bug` in issue) :beetle:
    - Enhancements (by label `enhancement` in issue) :star2:
    - 	Issues (closed issues `w/o any labels`) :non-potable_water:    

- You manually can set which labels should be included/excluded. :wrench:
- Apply a lot of other customisations, to fit changelog for your personal style :tophat: 
(*look `github_changelog_generator --help`  for details)*


###Alternatives
Here is a [wikipage list of alternatives](https://github.com/skywinder/Github-Changelog-Generator/wiki/Alternatives), that I found. But no one was satisfy my requirements.

*If you know other projects - feel free to edit this Wiki page!*


### Projects using this library
[Wikipage with list of projects](https://github.com/skywinder/Github-Changelog-Generator/wiki/Projects-using-Github-Changelog-Generator) 

*If you are using `github_changelog_generator` for generation change log in your project or know another project that uses it, please add it to [this] (https://github.com/skywinder/Github-Changelog-Generator/wiki/Projects-using-Github-Changelog-Generator) list.*

## Am I missed some essential feature?

- **Nothing is impossible!** 

- Open an [issue](https://github.com/skywinder/Github-Changelog-Generator/issues/new) and let's make generator better together! 

- *Bug reports, feature requests, patches, well-wishes are always welcome* :heavy_exclamation_mark:

## Contributing

1. Create an issue to discuss about your idea
2. [Fork it] (https://github.com/skywinder/Github-Changelog-Generator/fork)
3. Create your feature branch (`git checkout -b my-new-feature`)
4. Commit your changes (`git commit -am 'Add some feature'`)
5. Push to the branch (`git push origin my-new-feature`)
6. Create a new Pull Request
7. Profit! :white_check_mark:

## License

Github Changelog Generator is released under the [MIT License](http://www.opensource.org/licenses/MIT).