zola/components/front_matter/src/page.rs

288 lines
8.0 KiB
Rust

use std::collections::HashMap;
use chrono::prelude::*;
use serde_derive::Deserialize;
use tera::{Map, Value};
use toml;
use errors::{bail, Result};
use utils::de::{fix_toml_dates, from_toml_datetime};
/// The front matter of every page
#[derive(Debug, Clone, PartialEq, Deserialize)]
#[serde(default)]
pub struct PageFrontMatter {
/// <title> of the page
pub title: Option<String>,
/// Description in <meta> that appears when linked, e.g. on twitter
pub description: Option<String>,
/// Date if we want to order pages (ie blog post)
#[serde(default, deserialize_with = "from_toml_datetime")]
pub date: Option<String>,
/// Chrono converted datetime
#[serde(default, skip_deserializing)]
pub datetime: Option<NaiveDateTime>,
/// The converted date into a (year, month, day) tuple
#[serde(default, skip_deserializing)]
pub datetime_tuple: Option<(i32, u32, u32)>,
/// Whether this page is a draft
pub draft: bool,
/// The page slug. Will be used instead of the filename if present
/// Can't be an empty string if present
pub slug: Option<String>,
/// The path the page appears at, overrides the slug if set in the front-matter
/// otherwise is set after parsing front matter and sections
/// Can't be an empty string if present
pub path: Option<String>,
pub taxonomies: HashMap<String, Vec<String>>,
/// Integer to use to order content. Lowest is at the bottom, highest first
pub order: Option<usize>,
/// Integer to use to order content. Highest is at the bottom, lowest first
pub weight: Option<usize>,
/// All aliases for that page. Zola will create HTML templates that will
/// redirect to this
#[serde(skip_serializing)]
pub aliases: Vec<String>,
/// Specify a template different from `page.html` to use for that page
#[serde(skip_serializing)]
pub template: Option<String>,
/// Whether the page is included in the search index
/// Defaults to `true` but is only used if search if explicitly enabled in the config.
#[serde(skip_serializing)]
pub in_search_index: bool,
/// Any extra parameter present in the front matter
pub extra: Map<String, Value>,
}
impl PageFrontMatter {
pub fn parse(toml: &str) -> Result<PageFrontMatter> {
let mut f: PageFrontMatter = match toml::from_str(toml) {
Ok(d) => d,
Err(e) => bail!(e),
};
if let Some(ref slug) = f.slug {
if slug == "" {
bail!("`slug` can't be empty if present")
}
}
if let Some(ref path) = f.path {
if path == "" {
bail!("`path` can't be empty if present")
}
}
f.extra = match fix_toml_dates(f.extra) {
Value::Object(o) => o,
_ => unreachable!("Got something other than a table in page extra"),
};
f.date_to_datetime();
Ok(f)
}
/// Converts the TOML datetime to a Chrono naive datetime
/// Also grabs the year/month/day tuple that will be used in serialization
pub fn date_to_datetime(&mut self) {
self.datetime = if let Some(ref d) = self.date {
if d.contains('T') {
DateTime::parse_from_rfc3339(&d).ok().map(|s| s.naive_local())
} else {
NaiveDate::parse_from_str(&d, "%Y-%m-%d")
.ok()
.map(|s| s.and_hms(0, 0, 0))
}
} else {
None
};
self.datetime_tuple = if let Some(ref dt) = self.datetime {
Some((dt.year(), dt.month(), dt.day()))
} else {
None
};
}
pub fn order(&self) -> usize {
self.order.unwrap()
}
pub fn weight(&self) -> usize {
self.weight.unwrap()
}
}
impl Default for PageFrontMatter {
fn default() -> PageFrontMatter {
PageFrontMatter {
title: None,
description: None,
date: None,
datetime: None,
datetime_tuple: None,
draft: false,
slug: None,
path: None,
taxonomies: HashMap::new(),
order: None,
weight: None,
aliases: Vec::new(),
in_search_index: true,
template: None,
extra: Map::new(),
}
}
}
#[cfg(test)]
mod tests {
use super::PageFrontMatter;
use tera::to_value;
#[test]
fn can_have_empty_front_matter() {
let content = r#" "#;
let res = PageFrontMatter::parse(content);
println!("{:?}", res);
assert!(res.is_ok());
}
#[test]
fn can_parse_valid_front_matter() {
let content = r#"
title = "Hello"
description = "hey there""#;
let res = PageFrontMatter::parse(content);
assert!(res.is_ok());
let res = res.unwrap();
assert_eq!(res.title.unwrap(), "Hello".to_string());
assert_eq!(res.description.unwrap(), "hey there".to_string())
}
#[test]
fn errors_with_invalid_front_matter() {
let content = r#"title = 1\n"#;
let res = PageFrontMatter::parse(content);
assert!(res.is_err());
}
#[test]
fn errors_on_present_but_empty_slug() {
let content = r#"
title = "Hello"
description = "hey there"
slug = """#;
let res = PageFrontMatter::parse(content);
assert!(res.is_err());
}
#[test]
fn errors_on_present_but_empty_path() {
let content = r#"
title = "Hello"
description = "hey there"
path = """#;
let res = PageFrontMatter::parse(content);
assert!(res.is_err());
}
#[test]
fn can_parse_date_yyyy_mm_dd() {
let content = r#"
title = "Hello"
description = "hey there"
date = 2016-10-10
"#;
let res = PageFrontMatter::parse(content).unwrap();
assert!(res.date.is_some());
}
#[test]
fn can_parse_date_rfc3339() {
let content = r#"
title = "Hello"
description = "hey there"
date = 2002-10-02T15:00:00Z
"#;
let res = PageFrontMatter::parse(content).unwrap();
assert!(res.date.is_some());
}
#[test]
fn cannot_parse_random_date_format() {
let content = r#"
title = "Hello"
description = "hey there"
date = 2002/10/12"#;
let res = PageFrontMatter::parse(content);
assert!(res.is_err());
}
#[test]
fn cannot_parse_invalid_date_format() {
let content = r#"
title = "Hello"
description = "hey there"
date = 2002-14-01"#;
let res = PageFrontMatter::parse(content);
assert!(res.is_err());
}
#[test]
fn cannot_parse_date_as_string() {
let content = r#"
title = "Hello"
description = "hey there"
date = "2002-14-01""#;
let res = PageFrontMatter::parse(content);
assert!(res.is_err());
}
#[test]
fn can_parse_dates_in_extra() {
let content = r#"
title = "Hello"
description = "hey there"
[extra]
some-date = 2002-14-01"#;
let res = PageFrontMatter::parse(content);
println!("{:?}", res);
assert!(res.is_ok());
assert_eq!(res.unwrap().extra["some-date"], to_value("2002-14-01").unwrap());
}
#[test]
fn can_parse_nested_dates_in_extra() {
let content = r#"
title = "Hello"
description = "hey there"
[extra.something]
some-date = 2002-14-01"#;
let res = PageFrontMatter::parse(content);
println!("{:?}", res);
assert!(res.is_ok());
assert_eq!(res.unwrap().extra["something"]["some-date"], to_value("2002-14-01").unwrap());
}
#[test]
fn can_parse_taxonomies() {
let content = r#"
title = "Hello World"
[taxonomies]
tags = ["Rust", "JavaScript"]
categories = ["Dev"]
"#;
let res = PageFrontMatter::parse(content);
println!("{:?}", res);
assert!(res.is_ok());
let res2 = res.unwrap();
assert_eq!(res2.taxonomies["categories"], vec!["Dev"]);
assert_eq!(res2.taxonomies["tags"], vec!["Rust", "JavaScript"]);
}
}