src/directive/meta.rs


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use crate::error::SiteError;
use crate::page::PageMeta;
use crate::site::Site;
use crate::wikitext::ParsedDirective;

#[derive(Default, Debug, Eq, PartialEq)]
pub struct Meta {
    title: Option<String>,
}

impl Meta {
    pub const REQUIRED: &'static [&'static str] = &[];
    pub const ALLOWED: &'static [&'static str] = &["date", "link", "title"];
    pub const ALLOW_ANY_UNNAMED: bool = false;

    fn set_title(&mut self, title: &str) {
        self.title = Some(title.into());
    }

    pub fn process(&self, _site: &Site, meta: &mut PageMeta) -> Result<String, SiteError> {
        if let Some(title) = &self.title {
            meta.set_title(title.into());
        }
        Ok("".into())
    }
}

impl From<ParsedDirective> for Meta {
    fn from(p: ParsedDirective) -> Self {
        let mut meta = Meta::default();
        let args = p.args();
        if let Some(title) = args.get("title") {
            meta.set_title(title);
        }
        meta
    }
}