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//! Sass reimplemented in rust (not yet complete). //! //! The "r" in the name might stand for the Rust programming language, //! for "re-implemented", or possibly for my name Rasmus. //! //! # Example //! //! ``` //! use rsass::{compile_scss_path, output}; //! //! let path = "tests/basic/14_imports/a.scss".as_ref(); //! let format = output::Format { //! style: output::Style::Compressed, //! .. Default::default() //! }; //! let css = compile_scss_path(path, format).unwrap(); //! //! assert_eq!(css, b"div span{moo:goo}\n") //! ``` //! //! # Sass language and implemetation status //! //! The sass language [is defined in its reference //! doc](http://sass-lang.com/documentation/file.SASS_REFERENCE.html). //! This implementation is incomplete but getting there, if slowly. //! //! Progress: 3727 of 6171 tests passed in dart-sass compatibility mode. //! //! If you want a working rust library for sass right now, you may //! be better of with [sass-rs](https://crates.io/crates/sass-rs) //! or [sass-alt](https://crates.io/crates/sass-alt), //! which are rust wrappers around libsass. //! Another alternative is [grass](https://crates.io/crates/grass) //! which is another early stage pure rust implementation. //! That said, this implementation has reached a version where I find it //! usable for my personal projects, and the number of working tests are //! improving. #![forbid(unsafe_code)] #![forbid(missing_docs)] use std::path::Path; pub mod css; mod error; mod file_context; mod ordermap; pub mod output; mod parser; pub mod sass; pub mod selectors; pub mod value; mod variablescope; pub use crate::error::Error; pub use crate::file_context::{FileContext, FsFileContext}; use crate::output::Format; pub use crate::parser::{ parse_scss_data, parse_scss_file, parse_scss_path, parse_value_data, ParseError, SourceName, SourcePos, }; pub use crate::variablescope::{Scope, ScopeRef}; /// Parse a scss value from a buffer and write its css representation /// in the given format. /// /// # Example /// /// ``` /// # use rsass::{compile_value, Error}; /// # fn main() -> Result<(), Error> { /// assert_eq!(compile_value(b"10px + 4px", Default::default())?, b"14px"); /// assert_eq!(compile_value(b"10px 4px", Default::default())?, b"10px 4px"); /// # Ok(()) /// # } /// ``` pub fn compile_value(input: &[u8], format: Format) -> Result<Vec<u8>, Error> { let scope = ScopeRef::new_global(format); let value = parse_value_data(input)?.evaluate(scope)?; Ok(value.format(format).to_string().into_bytes()) } /// Parse scss data from a buffer and write css in the given style. /// /// # Example /// /// ``` /// use rsass::compile_scss; /// /// assert_eq!( /// compile_scss( /// b"foo {\ /// \n bar {\ /// \n baz:value;\ /// \n }\ /// \n}", /// Default::default(), /// ).unwrap(), /// b"foo bar {\ /// \n baz: value;\ /// \n}\n" /// ) /// ``` pub fn compile_scss(input: &[u8], format: Format) -> Result<Vec<u8>, Error> { let file_context = FsFileContext::new(); let items = parse_scss_data(input)?; format.write_root(&items, ScopeRef::new_global(format), &file_context) } /// Parse a file of scss data and write css in the given style. /// /// Any `@import` directives will be handled relative to the directory /// part of `file`. /// /// # Example /// /// ``` /// use rsass::{compile_scss_path, output::{Format, Style}}; /// /// assert_eq!( /// compile_scss_path( /// "tests/basic/14_imports/a.scss".as_ref(), /// Format { style: Style::Compressed, precision: 5 }, /// ).unwrap(), /// b"div span{moo:goo}\n" /// ) /// ``` /// /// **Attention**: Previously, this function was named `compile_scss_file()`. pub fn compile_scss_path( path: &Path, format: Format, ) -> Result<Vec<u8>, Error> { let file_context = FsFileContext::new(); let (sub_context, path) = file_context.file(path); let items = parse_scss_path(&path)?; format.write_root(&items, ScopeRef::new_global(format), &sub_context) }