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qTox/CONTRIBUTING.md

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# Filing an issue
### Must read
* If you aren't sure, you can ask on the
[**IRC channel**](https://webchat.freenode.net/?channels=qtox) or read our
[**wiki**](https://github.com/tux3/qTox/wiki) first.
2016-02-09 00:24:52 +08:00
* Do a quick **search**. Others might have already reported the issue.
* Write in **English**!
* Provide **version** information (you can find version numbers in menu
`Settings → About`):
```
OS:
qTox version:
Commit hash:
toxcore:
Qt:
```
* Provide **steps** to reproduce the problem, it will be easier to pinpoint the
fault.
* **Screenshots**! A screenshot is worth a thousand words. Just upload it.
[(How?)](https://help.github.com/articles/file-attachments-on-issues-and-pull-requests)
### Good to know
* **Patience**. The dev team is small and resource limited. Devs have to find
time, analyze the problem and fix the issue, it all takes time. :clock3:
* If you can code, why not become a **contributor** by fixing the issue and
opening a pull request? :wink:
* Harsh words or threats won't help your situation. What's worse, your complaint
will (very likely) be **ignored**. :fearful:
# Opening a pull request
### Must read
* Use [**commit message format**](#commit-message-format).
* Read our [**coding guidelines**](https://github.com/tux3/qTox/wiki/Coding).
* Keep the title **short** and provide a **clear** description about what your
pull request does.
* Provide **screenshots** for UI related changes.
* Keep your git commit history **clean** and **precise**. Commits like
`xxx fixup` should not appear.
* If your commit fixes a reported issue (for example #4134), add the following
message to the commit `Fixes #4134.`.
[Here is an example](https://github.com/tux3/qTox/commit/87160526d5bafcee7869d6741a06045e13d731d5).
### Good to know
* **Search** the pull request history! Others might have already implemented
your idea and it could be waiting to be merged (or have been rejected
already). Save your precious time by doing a search first.
* When resolving merge conflicts, do `git rebase <target_branch_name>`, don't do
`git pull`. Then you can start fixing the conflicts.
[Here is a good explanation](https://www.atlassian.com/git/tutorials/merging-vs-rebasing).
## <a name="commit"></a> Git Commit Guidelines
We have very precise rules over how our git commit messages can be formatted.
This leads to **more readable messages** that are easy to follow when looking
through the **project history**. But also, we use the git commit messages to
**generate the qTox change log** using
[clog-cli](https://github.com/clog-tool/clog-cli).
### Commit Message Format
Each commit message consists of a **header** and a **body**. The header has a
special format that includes a **type**, a **scope** and a **subject**:
```
<type>(<scope>): <subject>
<BLANK LINE>
<body>
```
The **header** is mandatory and the **body** is optional. The **scope** of the
header is also optional.
### Header
The header must be a short (72 characters or less) summary of the changes made.
#### Type
Must be one of the following:
* **feat**: A new feature
* **fix**: A bug fix
* **docs**: Documentation only changes
* **style**: Changes that do not affect the meaning of the code (white-space,
formatting, etc)
* **refactor**: A code change that neither fixes a bug nor adds a feature
* **perf**: A code change that improves performance
* **revert**: Reverts a previous commit
* **test**: Adding missing tests
* **chore**: Changes to the build process or auxiliary tools and libraries such
as documentation generation
##### Revert
If the commit reverts a previous commit, it should begin with `revert: `,
followed by the header of the reverted commit. In the body it should say:
`Revert commit <hash>.`, where the hash is the SHA of the commit being reverted.
#### Scope
The scope could be anything specifying place of the commit change. For example
`$location`, `$browser`, `$compile`, `$rootScope`, `ngHref`, `ngClick`,
`ngView`, etc.
#### Subject
The subject contains succinct description of the change:
* use the imperative, present tense: "change" not "changed" nor "changes"
* don't capitalize first letter
* no dot (.) at the end
A properly formed git commit subject line should always be able to complete the
following sentence:
> If applied, this commit will ___your subject line here___
### Body
Wrap the body at 72 characters whenever possible (for example, don't modify long
links to follow this rule). Just as in the **subject**, use the imperative,
present tense: "change" not "changed" nor "changes". The body should include the
motivation for the change and contrast this with previous behavior.
The body contains (in order of appearance):
* A detailed **description** of the committed changes.
* References to GitHub issues that the commit **closes** (e.g., `Closes #000` or
`Fixes #000`).
* Any **breaking changes**.
Include every section of the body that is relevant for your commit.
**Breaking changes** should start with the phrase `BREAKING CHANGE:` with a
space or two newlines. The rest of the commit message is then used for this.
## Git config
*Not a requirement, just a friendly tip. :wink:*
It's nice when commits are being GPG-signed. Github has a few articles about
configuring & signing.
https://help.github.com/articles/signing-commits-using-gpg/
And *tl;dr* version:
```
gpg --gen-key
gpg --send-keys <your generated key ID>
git config --global commit.gpgsign true
```
# Coding Guidelines
Use `C++11`.
## Coding style
```C++
function()
{
1st_line;
2nd_line;
}
// if / while / for / switch
if ()
1_line;
else if ()
just_one_line;
else
each_condition;
// ↑ note space between last line of conditional code, and code outside of condition
if ()
{
1_line;
}
else if ()
{
what_if;
i_told_you;
}
else
{
that_there_are;
more_lines;
}
QObject* asterisksGoWithTheType;
uint8_t* array = new uint8_t[count];
// camelCase for variables, CamelCase for classes
QObject notToMentionThatWeUseCamelCase;
```
E.g. https://github.com/tux3/qTox/blob/master/src/misc/flowlayout.cpp
## No translatable HTML tags
Do not put HTML in UI files, or inside `tr()`. Instead, you can put put it in
C++ code in the following way, to make only user-facing text translatable:
```C++
someWidget->setTooltip(
QStringLiteral("<html><!-- some HTML text -->") + tr("Translatable text…") +
QStringLiteral("</html>");
```
## Limitations
### Filesystem
Windows' unbeaten beauty and clarity:
https://msdn.microsoft.com/en-us/library/windows/desktop/aa365247%28v=vs.85%29.aspx
Symbols that should be forbidden for filenames under Windows:
`<` `>` `:` `"` `/` `\` `|` `?` `*`