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233 lines
5.8 KiB
Markdown
233 lines
5.8 KiB
Markdown
# SugarSS [![Build Status][ci-img]][ci]
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<img align="right" width="120" height="155"
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title="SugarSS logo by Maria Keller"
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src="http://postcss.github.io/sugarss/logo.svg">
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Indent-based CSS syntax for [PostCSS].
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```sass
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a
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color: blue
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.multiline,
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.selector
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box-shadow: 1px 0 9px rgba(0, 0, 0, .4),
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1px 0 3px rgba(0, 0, 0, .6)
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// Mobile
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@media (max-width: 400px)
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.body
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padding: 0 10px
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```
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As any PostCSS custom syntax, SugarSS has source map, [stylelint]
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and [postcss-sorting] support out-of-box.
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It was designed to be used with [PreCSS] and [postcss-nested-props].
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But you can use it with any PostCSS plugins
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or use it without any PostCSS plugins.
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With [gulp-sass-to-postcss-mixins] you can use `+mixin` syntax as in Sass.
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<a href="https://evilmartians.com/?utm_source=sugarss">
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<img src="https://evilmartians.com/badges/sponsored-by-evil-martians.svg"
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alt="Sponsored by Evil Martians" width="236" height="54">
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</a>
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[gulp-sass-to-postcss-mixins]: https://github.com/akella/gulp-sass-to-postcss-mixins
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[postcss-nested-props]: https://github.com/jedmao/postcss-nested-props
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[postcss-sorting]: https://github.com/hudochenkov/postcss-sorting
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[stylelint]: http://stylelint.io/
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[PostCSS]: https://github.com/postcss/postcss
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[PreCSS]: https://github.com/jonathantneal/precss
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[ci-img]: https://img.shields.io/travis/postcss/sugarss.svg
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[ci]: https://travis-ci.org/postcss/sugarss
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## Syntax
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SugarSS MIME-type is `text/x-sugarss` with `.sss` file extension.
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### Indent
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We recommend 2 spaces indent. However, SugarSS autodetects indent
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and can be used with tabs or spaces.
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But it is prohibited to mix spaces and tabs in SugarSS sources.
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### Multiline
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SugarSS was designed to have intuitively multiline selectors and declaration
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values.
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There are 3 rules for any types of nodes:
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```sass
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// 1. New line inside brackets will be ignored
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@supports ( (display: flex) and
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(display: grid) )
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// 2. Comma at the end of the line
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@media (max-width: 400px),
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(max-height: 800px)
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// 3. Backslash before new line
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@media screen and \
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(min-width: 600px)
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```
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In selector you can put a new line anywhere. Just keep same indent
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for every line of selector:
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```sass
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.parent >
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.child
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color: black
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```
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In declaration value you can put new line anywhere. Just keep bigger indent
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for value:
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```sass
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.one
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background: linear-gradient(rgba(0, 0, 0, 0), black)
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linear-gradient(red, rgba(255, 0, 0, 0))
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.two
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background:
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linear-gradient(rgba(0, 0, 0, 0), black)
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linear-gradient(red, rgba(255, 0, 0, 0))
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```
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### Comments
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SugarSS supports two types of comments:
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```sass
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/*
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Multiline comments
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*/
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// Inline comments
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```
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There is no “silent” comments in SugarSS. Output CSS will contain all comments
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from `.sss` source. But you can use [postcss-discard-comments]
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for Sass’s silent/loud comments behaviour.
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[postcss-discard-comments]: https://www.npmjs.com/package/postcss-discard-comments
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### Rule and Declarations
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SugarSS separates selectors and declarations by `:\s` or `:\n` token.
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So you must write a space after property name: `color: black` is good,
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`color:black` is prohibited.
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## Text Editors
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* Atom: [language-postcss], [source-preview-postcss] and [build-sugarss]
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* Vim: [vim-sugarss]
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We are working on syntax highlight support in text editors.
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Right now, you can set `Sass` or `Stylus` syntax highlight for `.sss` files.
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[language-postcss]: https://atom.io/packages/language-postcss
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[source-preview-postcss]: https://atom.io/packages/source-preview-postcss
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[build-sugarss]: https://atom.io/packages/build-sugarss
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[vim-sugarss]: https://github.com/hhsnopek/vim-sugarss
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## Usage
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Install SugarSS via npm:
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```sh
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npm install sugarss --save-dev
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```
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### SugarSS to CSS
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Just set SugarSS to PostCSS `parser` option and PostCSS will compile
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SugarSS to CSS.
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[Gulp](https://github.com/postcss/gulp-postcss):
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```js
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var sugarss = require('sugarss');
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var postcss = require('gulp-postcss');
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var rename = require('gulp-rename');
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gulp.task('style', function () {
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return gulp.src('src/**/*.sss')
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.pipe(postcss(plugins, { parser: sugarss }))
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.pipe(rename({ extname: '.css' }))
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.pipe(gulp.dest('build'));
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});
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```
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[Webpack](https://github.com/postcss/postcss-loader):
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```js
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module: {
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loaders: [
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{
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test: /\.sss/,
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loader: "style-loader!css-loader!postcss-loader?parser=sugarss"
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}
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]
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}
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```
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[CLI](https://github.com/postcss/postcss-cli):
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```
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postcss -u autoprefixer -p sugarss test.sss -o test.css
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```
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### SugarSS to SugarSS
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Sometimes we use PostCSS not to build CSS, but to fix source file.
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For example, to sort properties by [postcss-sorting].
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For this cases, use `syntax` option, instead of `parser`:
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```js
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gulp.task('sort', function () {
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return gulp.src('src/**/*.sss')
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.pipe(postcss([sorting], { syntax: sugarss }))
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.pipe(gulp.dest('src'));
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});
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```
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[postcss-sorting]: https://github.com/hudochenkov/postcss-sorting
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### CSS to SugarSS
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You can even compile existed CSS sources to SugarSS syntax.
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Just use `stringifier` option instead of `parser`:
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```js
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postcss().process(css, { stringifier: sugarss }).then(function (result) {
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result.content // Converted SugarSS content
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});
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```
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### Imports
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[postcss-import] doesn’t support `.sss` file extension, because this plugin
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implements W3C specification. If you want smarter `@import`, you should
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use [postcss-easy-import] with `extensions` option.
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```js
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postcss([
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easyImport({ extensions: ['.sss'] })
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]).process(sss, { parser: sugarss })
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```
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[postcss-easy-import]: https://github.com/TrySound/postcss-easy-import
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[postcss-import]: https://github.com/postcss/postcss-import
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## Thanks
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Cute project logo was made by [Maria Keller](http://www.mariakellerac.com/).
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