2016-12-06 08:27:03 +00:00
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/// A page, can be a blog post or a basic page
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2017-03-06 11:58:31 +00:00
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use std::cmp::Ordering;
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2016-12-11 06:05:03 +00:00
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use std::fs::File;
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use std::io::prelude::*;
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2016-12-13 06:22:24 +00:00
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use std::path::Path;
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2017-02-23 08:34:57 +00:00
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use std::result::Result as StdResult;
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2016-12-06 08:27:03 +00:00
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2016-12-13 06:22:24 +00:00
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use pulldown_cmark as cmark;
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2016-12-06 08:27:03 +00:00
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use regex::Regex;
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2017-02-23 08:34:57 +00:00
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use tera::{Tera, Context};
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use serde::ser::{SerializeStruct, self};
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2017-03-03 08:12:40 +00:00
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use slug::slugify;
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2016-12-06 08:27:03 +00:00
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2016-12-11 06:05:03 +00:00
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use errors::{Result, ResultExt};
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2016-12-06 12:48:23 +00:00
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use config::Config;
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2017-02-23 08:34:57 +00:00
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use front_matter::{FrontMatter};
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2016-12-06 08:27:03 +00:00
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lazy_static! {
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2017-02-23 08:34:57 +00:00
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static ref PAGE_RE: Regex = Regex::new(r"^\n?\+\+\+\n((?s).*(?-s))\+\+\+\n((?s).*(?-s))$").unwrap();
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2016-12-06 08:27:03 +00:00
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}
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2016-12-06 11:53:14 +00:00
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2017-02-23 08:34:57 +00:00
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#[derive(Clone, Debug, PartialEq, Deserialize)]
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2016-12-11 06:05:03 +00:00
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pub struct Page {
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2017-02-23 08:34:57 +00:00
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/// .md filepath, excluding the content/ bit
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2016-12-13 09:05:59 +00:00
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#[serde(skip_serializing)]
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2016-12-11 06:05:03 +00:00
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pub filepath: String,
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2017-02-23 08:34:57 +00:00
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/// The name of the .md file
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2016-12-13 09:05:59 +00:00
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#[serde(skip_serializing)]
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2016-12-13 06:22:24 +00:00
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pub filename: String,
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2017-02-23 08:34:57 +00:00
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/// The directories above our .md file are called sections
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/// for example a file at content/kb/solutions/blabla.md will have 2 sections:
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/// `kb` and `solutions`
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2016-12-13 09:05:59 +00:00
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#[serde(skip_serializing)]
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2016-12-13 06:22:24 +00:00
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pub sections: Vec<String>,
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2017-02-23 08:34:57 +00:00
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/// The actual content of the page, in markdown
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2016-12-13 09:05:59 +00:00
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#[serde(skip_serializing)]
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pub raw_content: String,
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2017-02-23 08:34:57 +00:00
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/// The HTML rendered of the page
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2016-12-11 06:05:03 +00:00
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pub content: String,
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2017-02-23 08:34:57 +00:00
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/// The front matter meta-data
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pub meta: FrontMatter,
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2017-03-06 14:45:57 +00:00
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/// The slug of that page.
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/// First tries to find the slug in the meta and defaults to filename otherwise
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pub slug: String,
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/// The relative URL of the page
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pub url: String,
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/// The full URL for that page
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pub permalink: String,
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2017-02-23 08:34:57 +00:00
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/// The previous page, by date
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pub previous: Option<Box<Page>>,
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/// The next page, by date
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pub next: Option<Box<Page>>,
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2016-12-06 08:27:03 +00:00
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}
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2017-02-23 08:34:57 +00:00
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impl Page {
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pub fn new(meta: FrontMatter) -> Page {
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2016-12-06 11:53:14 +00:00
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Page {
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2016-12-11 06:05:03 +00:00
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filepath: "".to_string(),
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2016-12-13 06:22:24 +00:00
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filename: "".to_string(),
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sections: vec![],
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raw_content: "".to_string(),
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2016-12-06 11:53:14 +00:00
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content: "".to_string(),
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2017-03-06 14:45:57 +00:00
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slug: "".to_string(),
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url: "".to_string(),
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permalink: "".to_string(),
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2017-02-23 08:34:57 +00:00
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meta: meta,
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previous: None,
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next: None,
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2016-12-06 11:53:14 +00:00
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}
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}
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2017-03-06 13:45:33 +00:00
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// Get word count and estimated reading time
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pub fn get_reading_analytics(&self) -> (usize, usize) {
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// Only works for latin language but good enough for a start
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let word_count: usize = self.raw_content.split_whitespace().count();
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// https://help.medium.com/hc/en-us/articles/214991667-Read-time
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// 275 seems a bit too high though
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(word_count, (word_count / 200))
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}
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2016-12-06 08:27:03 +00:00
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// Parse a page given the content of the .md file
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// Files without front matter or with invalid front matter are considered
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// erroneous
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2017-03-06 14:45:57 +00:00
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pub fn parse(filepath: &str, content: &str, config: &Config) -> Result<Page> {
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2016-12-06 08:27:03 +00:00
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// 1. separate front matter from content
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2017-02-23 08:34:57 +00:00
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if !PAGE_RE.is_match(content) {
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2016-12-11 06:05:03 +00:00
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bail!("Couldn't find front matter in `{}`. Did you forget to add `+++`?", filepath);
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2016-12-06 08:27:03 +00:00
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}
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// 2. extract the front matter and the content
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2017-02-23 08:34:57 +00:00
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let caps = PAGE_RE.captures(content).unwrap();
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// caps[0] is the full match
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let front_matter = &caps[1];
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let content = &caps[2];
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2016-12-06 08:27:03 +00:00
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2017-02-23 08:34:57 +00:00
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// 3. create our page, parse front matter and assign all of that
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let meta = FrontMatter::parse(&front_matter)
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2016-12-11 06:05:03 +00:00
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.chain_err(|| format!("Error when parsing front matter of file `{}`", filepath))?;
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2016-12-06 11:53:14 +00:00
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2017-02-23 08:34:57 +00:00
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let mut page = Page::new(meta);
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page.filepath = filepath.to_string();
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page.raw_content = content.to_string();
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2016-12-13 06:22:24 +00:00
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page.content = {
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let mut html = String::new();
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let parser = cmark::Parser::new(&page.raw_content);
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cmark::html::push_html(&mut html, parser);
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html
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};
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2017-03-06 14:45:57 +00:00
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let path = Path::new(filepath);
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page.filename = path.file_stem().expect("Couldn't get filename").to_string_lossy().to_string();
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page.slug = {
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if let Some(ref slug) = page.meta.slug {
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slug.to_string()
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} else {
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slugify(page.filename.clone())
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}
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};
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2016-12-13 06:22:24 +00:00
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2017-02-23 08:34:57 +00:00
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// 4. Find sections
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2016-12-13 10:14:49 +00:00
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// Pages with custom urls exists outside of sections
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2017-03-06 14:45:57 +00:00
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if let Some(ref u) = page.meta.url {
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page.url = u.to_string();
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} else {
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2016-12-13 10:14:49 +00:00
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// find out if we have sections
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for section in path.parent().unwrap().components() {
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page.sections.push(section.as_ref().to_string_lossy().to_string());
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}
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2017-03-06 14:45:57 +00:00
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if !page.sections.is_empty() {
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page.url = format!("{}/{}", page.sections.join("/"), page.slug);
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} else {
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page.url = format!("{}", page.slug);
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}
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2016-12-13 10:14:49 +00:00
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}
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2017-03-06 14:45:57 +00:00
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page.permalink = if config.base_url.ends_with("/") {
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format!("{}{}", config.base_url, page.url)
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} else {
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format!("{}/{}", config.base_url, page.url)
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};
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2016-12-13 10:14:49 +00:00
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2016-12-11 06:05:03 +00:00
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Ok(page)
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}
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2016-12-06 11:53:14 +00:00
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2017-03-06 14:45:57 +00:00
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pub fn from_file<P: AsRef<Path>>(path: P, config: &Config) -> Result<Page> {
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2016-12-13 06:22:24 +00:00
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let path = path.as_ref();
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2016-12-11 06:05:03 +00:00
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let mut content = String::new();
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File::open(path)
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2016-12-13 06:22:24 +00:00
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.chain_err(|| format!("Failed to open '{:?}'", path.display()))?
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2016-12-11 06:05:03 +00:00
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.read_to_string(&mut content)?;
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2016-12-06 08:27:03 +00:00
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2016-12-13 06:22:24 +00:00
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// Remove the content string from name
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// Maybe get a path as an arg instead and use strip_prefix?
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2017-03-06 14:45:57 +00:00
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Page::parse(&path.strip_prefix("content").unwrap().to_string_lossy(), &content, config)
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2016-12-11 06:05:03 +00:00
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}
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2016-12-06 08:27:03 +00:00
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2016-12-11 06:05:03 +00:00
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fn get_layout_name(&self) -> String {
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2017-02-23 08:34:57 +00:00
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match self.meta.layout {
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2016-12-11 06:05:03 +00:00
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Some(ref l) => l.to_string(),
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2017-02-23 08:34:57 +00:00
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None => "page.html".to_string()
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2016-12-06 11:53:14 +00:00
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}
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2016-12-06 08:27:03 +00:00
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}
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2016-12-06 12:48:23 +00:00
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2017-03-06 13:45:33 +00:00
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/// Renders the page using the default layout, unless specified in front-matter
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2017-03-03 08:12:40 +00:00
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pub fn render_html(&self, tera: &Tera, config: &Config) -> Result<String> {
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2016-12-11 06:05:03 +00:00
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let tpl = self.get_layout_name();
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let mut context = Context::new();
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context.add("site", config);
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context.add("page", self);
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2016-12-13 06:22:24 +00:00
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2017-02-23 08:34:57 +00:00
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tera.render(&tpl, &context)
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2016-12-13 06:22:24 +00:00
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.chain_err(|| "Error while rendering template")
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2016-12-11 06:05:03 +00:00
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}
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2016-12-06 08:27:03 +00:00
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}
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2017-02-23 08:34:57 +00:00
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impl ser::Serialize for Page {
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fn serialize<S>(&self, serializer: S) -> StdResult<S::Ok, S::Error> where S: ser::Serializer {
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2017-03-06 14:45:57 +00:00
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let mut state = serializer.serialize_struct("page", 13)?;
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2017-02-23 08:34:57 +00:00
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state.serialize_field("content", &self.content)?;
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state.serialize_field("title", &self.meta.title)?;
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state.serialize_field("description", &self.meta.description)?;
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state.serialize_field("date", &self.meta.date)?;
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2017-03-06 14:45:57 +00:00
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state.serialize_field("slug", &self.slug)?;
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state.serialize_field("url", &format!("/{}", self.url))?;
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state.serialize_field("permalink", &self.permalink)?;
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2017-02-23 08:34:57 +00:00
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state.serialize_field("tags", &self.meta.tags)?;
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state.serialize_field("draft", &self.meta.draft)?;
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state.serialize_field("category", &self.meta.category)?;
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state.serialize_field("extra", &self.meta.extra)?;
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2017-03-06 13:45:33 +00:00
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let (word_count, reading_time) = self.get_reading_analytics();
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state.serialize_field("word_count", &word_count)?;
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state.serialize_field("reading_time", &reading_time)?;
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2017-02-23 08:34:57 +00:00
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state.end()
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}
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}
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2016-12-06 08:27:03 +00:00
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2017-03-06 11:58:31 +00:00
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impl PartialOrd for Page {
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fn partial_cmp(&self, other: &Page) -> Option<Ordering> {
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if self.meta.date.is_none() {
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println!("No self data");
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return Some(Ordering::Less);
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}
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if other.meta.date.is_none() {
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println!("No other date");
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return Some(Ordering::Greater);
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}
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let this_date = self.meta.parse_date().unwrap();
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let other_date = other.meta.parse_date().unwrap();
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if this_date > other_date {
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return Some(Ordering::Less);
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}
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if this_date < other_date {
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return Some(Ordering::Greater);
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}
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Some(Ordering::Equal)
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}
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2016-12-13 09:05:59 +00:00
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}
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2016-12-06 08:27:03 +00:00
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#[cfg(test)]
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mod tests {
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2016-12-06 11:53:14 +00:00
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use super::{Page};
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2017-03-06 14:45:57 +00:00
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use config::Config;
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2016-12-06 11:53:14 +00:00
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#[test]
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fn test_can_parse_a_valid_page() {
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let content = r#"
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2017-02-23 08:34:57 +00:00
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+++
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2016-12-06 11:53:14 +00:00
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title = "Hello"
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2017-02-23 08:34:57 +00:00
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description = "hey there"
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2016-12-11 06:05:03 +00:00
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slug = "hello-world"
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2016-12-06 11:53:14 +00:00
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+++
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Hello world"#;
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2017-03-06 14:45:57 +00:00
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let res = Page::parse("post.md", content, &Config::default());
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2016-12-06 11:53:14 +00:00
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assert!(res.is_ok());
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let page = res.unwrap();
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2016-12-06 08:27:03 +00:00
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2017-02-23 08:34:57 +00:00
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assert_eq!(page.meta.title, "Hello".to_string());
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assert_eq!(page.meta.slug.unwrap(), "hello-world".to_string());
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2016-12-13 06:22:24 +00:00
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assert_eq!(page.raw_content, "Hello world".to_string());
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assert_eq!(page.content, "<p>Hello world</p>\n".to_string());
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}
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#[test]
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fn test_can_find_one_parent_directory() {
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let content = r#"
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2017-02-23 08:34:57 +00:00
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+++
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2016-12-13 06:22:24 +00:00
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title = "Hello"
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2017-02-23 08:34:57 +00:00
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description = "hey there"
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2016-12-13 06:22:24 +00:00
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slug = "hello-world"
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+++
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Hello world"#;
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2017-03-06 14:45:57 +00:00
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let res = Page::parse("posts/intro.md", content, &Config::default());
|
2016-12-13 06:22:24 +00:00
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assert!(res.is_ok());
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let page = res.unwrap();
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assert_eq!(page.sections, vec!["posts".to_string()]);
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}
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#[test]
|
2016-12-13 10:14:49 +00:00
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fn test_can_find_multiple_parent_directories() {
|
2016-12-13 06:22:24 +00:00
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let content = r#"
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2017-02-23 08:34:57 +00:00
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+++
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2016-12-13 06:22:24 +00:00
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title = "Hello"
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2017-02-23 08:34:57 +00:00
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description = "hey there"
|
2016-12-13 06:22:24 +00:00
|
|
|
slug = "hello-world"
|
|
|
|
+++
|
|
|
|
Hello world"#;
|
2017-03-06 14:45:57 +00:00
|
|
|
let res = Page::parse("posts/intro/start.md", content, &Config::default());
|
2016-12-13 06:22:24 +00:00
|
|
|
assert!(res.is_ok());
|
|
|
|
let page = res.unwrap();
|
|
|
|
assert_eq!(page.sections, vec!["posts".to_string(), "intro".to_string()]);
|
2016-12-06 11:53:14 +00:00
|
|
|
}
|
|
|
|
|
2016-12-13 10:14:49 +00:00
|
|
|
#[test]
|
|
|
|
fn test_can_make_url_from_sections_and_slug() {
|
|
|
|
let content = r#"
|
2017-02-23 08:34:57 +00:00
|
|
|
+++
|
2016-12-13 10:14:49 +00:00
|
|
|
title = "Hello"
|
2017-02-23 08:34:57 +00:00
|
|
|
description = "hey there"
|
2016-12-13 10:14:49 +00:00
|
|
|
slug = "hello-world"
|
|
|
|
+++
|
|
|
|
Hello world"#;
|
2017-03-06 14:45:57 +00:00
|
|
|
let mut conf = Config::default();
|
|
|
|
conf.base_url = "http://hello.com/".to_string();
|
|
|
|
let res = Page::parse("posts/intro/start.md", content, &conf);
|
|
|
|
assert!(res.is_ok());
|
|
|
|
let page = res.unwrap();
|
|
|
|
assert_eq!(page.url, "posts/intro/hello-world");
|
|
|
|
assert_eq!(page.permalink, "http://hello.com/posts/intro/hello-world");
|
|
|
|
}
|
|
|
|
|
|
|
|
#[test]
|
|
|
|
fn test_can_make_permalink_with_non_trailing_slash_base_url() {
|
|
|
|
let content = r#"
|
|
|
|
+++
|
|
|
|
title = "Hello"
|
|
|
|
description = "hey there"
|
|
|
|
slug = "hello-world"
|
|
|
|
+++
|
|
|
|
Hello world"#;
|
|
|
|
let mut conf = Config::default();
|
|
|
|
conf.base_url = "http://hello.com".to_string();
|
|
|
|
let res = Page::parse("posts/intro/start.md", content, &conf);
|
2016-12-13 10:14:49 +00:00
|
|
|
assert!(res.is_ok());
|
|
|
|
let page = res.unwrap();
|
2017-03-06 14:45:57 +00:00
|
|
|
assert_eq!(page.url, "posts/intro/hello-world");
|
|
|
|
println!("{}", page.permalink);
|
|
|
|
assert_eq!(page.permalink, format!("{}{}", conf.base_url, "/posts/intro/hello-world"));
|
2016-12-13 10:14:49 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
#[test]
|
2017-03-06 14:45:57 +00:00
|
|
|
fn test_can_make_url_from_slug_only() {
|
2016-12-13 10:14:49 +00:00
|
|
|
let content = r#"
|
2017-02-23 08:34:57 +00:00
|
|
|
+++
|
2016-12-13 10:14:49 +00:00
|
|
|
title = "Hello"
|
2017-02-23 08:34:57 +00:00
|
|
|
description = "hey there"
|
2016-12-13 10:14:49 +00:00
|
|
|
slug = "hello-world"
|
|
|
|
+++
|
|
|
|
Hello world"#;
|
2017-03-06 14:45:57 +00:00
|
|
|
let res = Page::parse("start.md", content, &Config::default());
|
2016-12-13 10:14:49 +00:00
|
|
|
assert!(res.is_ok());
|
|
|
|
let page = res.unwrap();
|
2017-03-06 14:45:57 +00:00
|
|
|
assert_eq!(page.url, "hello-world");
|
|
|
|
assert_eq!(page.permalink, format!("{}{}", Config::default().base_url, "hello-world"));
|
2017-02-23 08:34:57 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
#[test]
|
|
|
|
fn test_errors_on_invalid_front_matter_format() {
|
|
|
|
let content = r#"
|
|
|
|
title = "Hello"
|
|
|
|
description = "hey there"
|
|
|
|
slug = "hello-world"
|
|
|
|
+++
|
|
|
|
Hello world"#;
|
2017-03-06 14:45:57 +00:00
|
|
|
let res = Page::parse("start.md", content, &Config::default());
|
2017-02-23 08:34:57 +00:00
|
|
|
assert!(res.is_err());
|
2016-12-13 10:14:49 +00:00
|
|
|
}
|
2017-03-03 08:12:40 +00:00
|
|
|
|
|
|
|
#[test]
|
|
|
|
fn test_can_make_slug_from_non_slug_filename() {
|
|
|
|
let content = r#"
|
|
|
|
+++
|
|
|
|
title = "Hello"
|
|
|
|
description = "hey there"
|
|
|
|
+++
|
|
|
|
Hello world"#;
|
2017-03-06 14:45:57 +00:00
|
|
|
let res = Page::parse("file with space.md", content, &Config::default());
|
2017-03-03 08:12:40 +00:00
|
|
|
assert!(res.is_ok());
|
|
|
|
let page = res.unwrap();
|
2017-03-06 14:45:57 +00:00
|
|
|
assert_eq!(page.slug, "file-with-space");
|
|
|
|
assert_eq!(page.permalink, format!("{}{}", Config::default().base_url, "file-with-space"));
|
2017-03-03 08:12:40 +00:00
|
|
|
}
|
2017-03-06 13:45:33 +00:00
|
|
|
|
|
|
|
#[test]
|
|
|
|
fn test_reading_analytics_short() {
|
|
|
|
let content = r#"
|
|
|
|
+++
|
|
|
|
title = "Hello"
|
|
|
|
description = "hey there"
|
|
|
|
+++
|
|
|
|
Hello world"#;
|
2017-03-06 14:45:57 +00:00
|
|
|
let res = Page::parse("file with space.md", content, &Config::default());
|
2017-03-06 13:45:33 +00:00
|
|
|
assert!(res.is_ok());
|
|
|
|
let page = res.unwrap();
|
|
|
|
let (word_count, reading_time) = page.get_reading_analytics();
|
|
|
|
assert_eq!(word_count, 2);
|
|
|
|
assert_eq!(reading_time, 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
#[test]
|
|
|
|
fn test_reading_analytics_long() {
|
|
|
|
let mut content = r#"
|
|
|
|
+++
|
|
|
|
title = "Hello"
|
|
|
|
description = "hey there"
|
|
|
|
+++
|
|
|
|
Hello world"#.to_string();
|
|
|
|
for _ in 0..1000 {
|
|
|
|
content.push_str(" Hello world");
|
|
|
|
}
|
2017-03-06 14:45:57 +00:00
|
|
|
let res = Page::parse("hello.md", &content, &Config::default());
|
2017-03-06 13:45:33 +00:00
|
|
|
assert!(res.is_ok());
|
|
|
|
let page = res.unwrap();
|
|
|
|
let (word_count, reading_time) = page.get_reading_analytics();
|
|
|
|
assert_eq!(word_count, 2002);
|
|
|
|
assert_eq!(reading_time, 10);
|
|
|
|
}
|
2016-12-06 08:27:03 +00:00
|
|
|
}
|