zola/components/library/src/content/file_info.rs
2019-01-04 20:31:31 +01:00

240 lines
8.4 KiB
Rust

use std::path::{Path, PathBuf};
use config::Config;
use errors::Result;
/// Takes a full path to a file and returns only the components after the first `content` directory
/// Will not return the filename as last component
pub fn find_content_components<P: AsRef<Path>>(path: P) -> Vec<String> {
let path = path.as_ref();
let mut is_in_content = false;
let mut components = vec![];
for section in path.parent().unwrap().components() {
let component = section.as_os_str().to_string_lossy();
if is_in_content {
components.push(component.to_string());
continue;
}
if component == "content" {
is_in_content = true;
}
}
components
}
/// Struct that contains all the information about the actual file
#[derive(Debug, Clone, PartialEq)]
pub struct FileInfo {
/// The full path to the .md file
pub path: PathBuf,
/// The on-disk filename, will differ from the `name` when there is a language code in it
pub filename: String,
/// The name of the .md file without the extension, always `_index` for sections
/// Doesn't contain the language if there was one in the filename
pub name: String,
/// The .md path, starting from the content directory, with `/` slashes
pub relative: String,
/// Path of the directory containing the .md file
pub parent: PathBuf,
/// Path of the grand parent directory for that file. Only used in sections to find subsections.
pub grand_parent: Option<PathBuf>,
/// The folder names to this section file, starting from the `content` directory
/// For example a file at content/kb/solutions/blabla.md will have 2 components:
/// `kb` and `solutions`
pub components: Vec<String>,
/// This is `parent` + `name`, used to find content referring to the same content but in
/// various languages.
pub canonical: PathBuf,
}
impl FileInfo {
pub fn new_page(path: &Path) -> FileInfo {
let file_path = path.to_path_buf();
let mut parent = file_path.parent().unwrap().to_path_buf();
let name = path.file_stem().unwrap().to_string_lossy().to_string();
let mut components = find_content_components(&file_path);
let relative = if !components.is_empty() {
format!("{}/{}.md", components.join("/"), name)
} else {
format!("{}.md", name)
};
// If we have a folder with an asset, don't consider it as a component
// Splitting on `.` as we might have a language so it isn't *only* index but also index.fr
// etc
if !components.is_empty() && name.split('.').collect::<Vec<_>>()[0] == "index" {
components.pop();
// also set parent_path to grandparent instead
parent = parent.parent().unwrap().to_path_buf();
}
FileInfo {
filename: file_path.file_name().unwrap().to_string_lossy().to_string(),
path: file_path,
// We don't care about grand parent for pages
grand_parent: None,
canonical: parent.join(&name),
parent,
name,
components,
relative,
}
}
pub fn new_section(path: &Path) -> FileInfo {
let file_path = path.to_path_buf();
let parent = path.parent().unwrap().to_path_buf();
let name = path.file_stem().unwrap().to_string_lossy().to_string();
let components = find_content_components(path);
let relative = if !components.is_empty() {
format!("{}/{}.md", components.join("/"), name)
} else {
format!("{}.md", name)
};
let grand_parent = parent.parent().map(|p| p.to_path_buf());
FileInfo {
filename: file_path.file_name().unwrap().to_string_lossy().to_string(),
path: file_path,
canonical: parent.join(&name),
parent,
grand_parent,
name,
components,
relative,
}
}
/// Look for a language in the filename.
/// If a language has been found, update the name of the file in this struct to
/// remove it and return the language code
pub fn find_language(&mut self, config: &Config) -> Result<Option<String>> {
// No languages? Nothing to do
if !config.is_multilingual() {
return Ok(None);
}
if !self.name.contains('.') {
return Ok(None);
}
// Go with the assumption that no one is using `.` in filenames when using i18n
// We can document that
let mut parts: Vec<String> = self.name.splitn(2, '.').map(|s| s.to_string()).collect();
// The language code is not present in the config: typo or the user forgot to add it to the
// config
if !config.languages_codes().contains(&parts[1].as_ref()) {
bail!("File {:?} has a language code of {} which isn't present in the config.toml `languages`", self.path, parts[1]);
}
self.name = parts.swap_remove(0);
self.canonical = self.parent.join(&self.name);
let lang = parts.swap_remove(0);
Ok(Some(lang))
}
}
#[doc(hidden)]
impl Default for FileInfo {
fn default() -> FileInfo {
FileInfo {
path: PathBuf::new(),
parent: PathBuf::new(),
grand_parent: None,
filename: String::new(),
name: String::new(),
components: vec![],
relative: String::new(),
canonical: PathBuf::new(),
}
}
}
#[cfg(test)]
mod tests {
use std::path::Path;
use config::{Config, Language};
use super::{find_content_components, FileInfo};
#[test]
fn can_find_content_components() {
let res =
find_content_components("/home/vincent/code/site/content/posts/tutorials/python.md");
assert_eq!(res, ["posts".to_string(), "tutorials".to_string()]);
}
#[test]
fn can_find_components_in_page_with_assets() {
let file = FileInfo::new_page(&Path::new(
"/home/vincent/code/site/content/posts/tutorials/python/index.md",
));
assert_eq!(file.components, ["posts".to_string(), "tutorials".to_string()]);
}
#[test]
fn can_find_valid_language_in_page() {
let mut config = Config::default();
config.languages.push(Language { code: String::from("fr"), rss: false });
let mut file = FileInfo::new_page(&Path::new(
"/home/vincent/code/site/content/posts/tutorials/python.fr.md",
));
let res = file.find_language(&config);
assert!(res.is_ok());
assert_eq!(res.unwrap(), Some(String::from("fr")));
}
#[test]
fn can_find_valid_language_in_page_with_assets() {
let mut config = Config::default();
config.languages.push(Language { code: String::from("fr"), rss: false });
let mut file = FileInfo::new_page(&Path::new(
"/home/vincent/code/site/content/posts/tutorials/python/index.fr.md",
));
assert_eq!(file.components, ["posts".to_string(), "tutorials".to_string()]);
let res = file.find_language(&config);
assert!(res.is_ok());
assert_eq!(res.unwrap(), Some(String::from("fr")));
}
#[test]
fn do_nothing_on_unknown_language_in_page_with_i18n_off() {
let config = Config::default();
let mut file = FileInfo::new_page(&Path::new(
"/home/vincent/code/site/content/posts/tutorials/python.fr.md",
));
let res = file.find_language(&config);
assert!(res.is_ok());
assert!(res.unwrap().is_none());
}
#[test]
fn errors_on_unknown_language_in_page_with_i18n_on() {
let mut config = Config::default();
config.languages.push(Language { code: String::from("it"), rss: false });
let mut file = FileInfo::new_page(&Path::new(
"/home/vincent/code/site/content/posts/tutorials/python.fr.md",
));
let res = file.find_language(&config);
assert!(res.is_err());
}
#[test]
fn can_find_valid_language_in_section() {
let mut config = Config::default();
config.languages.push(Language { code: String::from("fr"), rss: false });
let mut file = FileInfo::new_section(&Path::new(
"/home/vincent/code/site/content/posts/tutorials/_index.fr.md",
));
let res = file.find_language(&config);
assert!(res.is_ok());
assert_eq!(res.unwrap(), Some(String::from("fr")));
}
}