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#![cfg_attr(feature = "cargo-clippy", allow(unused_parens))]
extern crate serde;
#[macro_use]
extern crate serde_derive;
#[cfg(feature = "serde-json")]
extern crate serde_json;
extern crate toml;
use std::env;
use std::fs;
use std::path::{Path, PathBuf};
mod error;
mod escaping;
pub use error::{Error, Result};
pub use escaping::MarkupDisplay;
pub mod filters;
pub struct Config {
pub dirs: Vec<PathBuf>,
}
impl Config {
pub fn new() -> Config {
let root = PathBuf::from(env::var("CARGO_MANIFEST_DIR").unwrap());
let filename = root.join(CONFIG_FILE_NAME);
if filename.exists() {
Self::from_str(
&fs::read_to_string(&filename)
.expect(&format!("unable to read {}", filename.to_str().unwrap())),
)
} else {
Self::from_str("")
}
}
pub fn from_str(s: &str) -> Self {
let root = PathBuf::from(env::var("CARGO_MANIFEST_DIR").unwrap());
let default = vec![root.join("templates")];
let raw: RawConfig =
toml::from_str(&s).expect(&format!("invalid TOML in {}", CONFIG_FILE_NAME));
let dirs = match raw.general {
Some(General { dirs: Some(dirs) }) => {
dirs.into_iter().map(|dir| root.join(dir)).collect()
}
Some(General { dirs: None }) | None => default,
};
Self { dirs }
}
pub fn find_template(&self, path: &str, start_at: Option<&Path>) -> PathBuf {
if let Some(root) = start_at {
let relative = root.with_file_name(path);
if relative.exists() {
return relative.to_owned();
}
}
for dir in &self.dirs {
let rooted = dir.join(path);
if rooted.exists() {
return rooted;
}
}
panic!(
"template {:?} not found in directories {:?}",
path, self.dirs
)
}
}
#[derive(Deserialize)]
struct RawConfig {
general: Option<General>,
}
#[derive(Deserialize)]
struct General {
dirs: Option<Vec<String>>,
}
static CONFIG_FILE_NAME: &str = "askama.toml";
#[cfg(test)]
mod tests {
use super::Config;
use std::env;
use std::path::{Path, PathBuf};
#[test]
fn test_default_config() {
let mut root = PathBuf::from(env::var("CARGO_MANIFEST_DIR").unwrap());
root.push("templates");
let config = Config::from_str("");
assert_eq!(config.dirs, vec![root]);
}
#[test]
fn test_config_dirs() {
let mut root = PathBuf::from(env::var("CARGO_MANIFEST_DIR").unwrap());
root.push("tpl");
let config = Config::from_str("[general]\ndirs = [\"tpl\"]");
assert_eq!(config.dirs, vec![root]);
}
fn assert_eq_rooted(actual: &Path, expected: &str) {
let mut root = PathBuf::from(env::var("CARGO_MANIFEST_DIR").unwrap());
root.push("templates");
let mut inner = PathBuf::new();
inner.push(expected);
assert_eq!(actual.strip_prefix(root).unwrap(), inner);
}
#[test]
fn find_absolute() {
let config = Config::new();
let root = config.find_template("a.html", None);
let path = config.find_template("sub/b.html", Some(&root));
assert_eq_rooted(&path, "sub/b.html");
}
#[test]
#[should_panic]
fn find_relative_nonexistent() {
let config = Config::new();
let root = config.find_template("a.html", None);
config.find_template("b.html", Some(&root));
}
#[test]
fn find_relative() {
let config = Config::new();
let root = config.find_template("sub/b.html", None);
let path = config.find_template("c.html", Some(&root));
assert_eq_rooted(&path, "sub/c.html");
}
#[test]
fn find_relative_sub() {
let config = Config::new();
let root = config.find_template("sub/b.html", None);
let path = config.find_template("sub1/d.html", Some(&root));
assert_eq_rooted(&path, "sub/sub1/d.html");
}
}
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