Trait FileSystem 

pub trait FileSystem {
    // Required methods
    fn file_exists(&mut self, path: &str) -> bool;
    fn get_file_mime_type(&mut self, path: &str) -> String;
    fn get_file_charset(&mut self, path: &str) -> String;
    fn open_file(&mut self, path: &str) -> Option<Vec<u8>>;
}

This is used for loading File URLs (eg, file:///page.html).

You can provide the library with your own FileSystem implementation so that file assets are loaded from your own pipeline (useful if you would like to encrypt/compress your file assets or ship it in a custom format).

AppCore automatically provides a platform-specific implementation of this that loads files from a local directory when you call App::new

If you are using Renderer::create instead, you will need to provide your own implementation via platform::set_filesystem.

To provide your own custom FileSystem implementation, you should implement this trait, and then pass an instance of your struct to platform::set_filesystem before calling Renderer::create or App::new.

Required Methods

fn file_exists(&mut self, path: &str) -> bool

Check if file path exists, return true if exists.

fn get_file_mime_type(&mut self, path: &str) -> String

Get the mime-type of the file (eg “text/html”).

This is usually determined by analyzing the file extension.

If a mime-type cannot be determined, this should return “application/unknown”.

fn get_file_charset(&mut self, path: &str) -> String

Get the charset / encoding of the file (eg “utf-8”, “iso-8859-1”).

This is only applicable for text-based files (eg, “text/html”, “text/plain”) and is usually determined by analyzing the contents of the file.

If a charset cannot be determined, a safe default to return is “utf-8”.

fn open_file(&mut self, path: &str) -> Option<Vec<u8>>

Open file for reading and map it to a Buffer.

If the file was unable to be opened, you should return None.

Implementors