zola/components/front_matter/src/section.rs
2017-07-01 16:47:41 +09:00

104 lines
3.2 KiB
Rust

use std::collections::HashMap;
use tera::Value;
use toml;
use errors::Result;
use super::{SortBy, InsertAnchor};
static DEFAULT_PAGINATE_PATH: &'static str = "page";
/// The front matter of every section
#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
pub struct SectionFrontMatter {
/// <title> of the page
pub title: Option<String>,
/// Description in <meta> that appears when linked, e.g. on twitter
pub description: Option<String>,
/// Whether to sort by "date", "order" or "none". Defaults to `none`.
#[serde(skip_serializing)]
pub sort_by: Option<SortBy>,
/// Optional template, if we want to specify which template to render for that page
#[serde(skip_serializing)]
pub template: Option<String>,
/// How many pages to be displayed per paginated page. No pagination will happen if this isn't set
#[serde(skip_serializing)]
pub paginate_by: Option<usize>,
/// Path to be used by pagination: the page number will be appended after it. Defaults to `page`.
#[serde(skip_serializing)]
pub paginate_path: Option<String>,
/// Whether to insert a link for each header like in Github READMEs. Defaults to false
/// The default template can be overridden by creating a `anchor-link.html` template and CSS will need to be
/// written if you turn that on.
pub insert_anchor: Option<InsertAnchor>,
/// Whether to render that section or not. Defaults to `true`.
/// Useful when the section is only there to organize things but is not meant
/// to be used directly, like a posts section in a personal site
#[serde(skip_serializing)]
pub render: Option<bool>,
/// Any extra parameter present in the front matter
pub extra: Option<HashMap<String, Value>>,
}
impl SectionFrontMatter {
pub fn parse(toml: &str) -> Result<SectionFrontMatter> {
let mut f: SectionFrontMatter = match toml::from_str(toml) {
Ok(d) => d,
Err(e) => bail!(e),
};
if f.paginate_path.is_none() {
f.paginate_path = Some(DEFAULT_PAGINATE_PATH.to_string());
}
if f.render.is_none() {
f.render = Some(true);
}
if f.sort_by.is_none() {
f.sort_by = Some(SortBy::None);
}
if f.insert_anchor.is_none() {
f.insert_anchor = Some(InsertAnchor::None);
}
Ok(f)
}
/// Returns the current sorting method, defaults to `None` (== no sorting)
pub fn sort_by(&self) -> SortBy {
self.sort_by.unwrap()
}
/// Only applies to section, whether it is paginated or not.
pub fn is_paginated(&self) -> bool {
match self.paginate_by {
Some(v) => v > 0,
None => false
}
}
pub fn should_render(&self) -> bool {
self.render.unwrap()
}
}
impl Default for SectionFrontMatter {
fn default() -> SectionFrontMatter {
SectionFrontMatter {
title: None,
description: None,
sort_by: Some(SortBy::None),
template: None,
paginate_by: None,
paginate_path: Some(DEFAULT_PAGINATE_PATH.to_string()),
render: Some(true),
insert_anchor: Some(InsertAnchor::None),
extra: None,
}
}
}