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use crate::error::SiteError;
use log::{debug, trace};
use std::path::{Component, Path, PathBuf};
pub fn canonicalize(path: &Path) -> Result<PathBuf, SiteError> {
path.canonicalize()
.map_err(|e| SiteError::Canonicalize(path.into(), e))
}
pub fn mkdir(path: &Path) -> Result<(), SiteError> {
debug!("creating directory {}", path.display());
std::fs::create_dir_all(path).map_err(|e| SiteError::CreateDir(path.into(), e))?;
Ok(())
}
pub fn copy(src: &Path, dest: &Path) -> Result<(), SiteError> {
trace!("copying: {} -> {}", src.display(), dest.display());
std::fs::copy(src, dest).map_err(|e| SiteError::CopyFile(src.into(), dest.into(), e))?;
Ok(())
}
pub fn copy_file_from_source(filename: &Path, output: &Path) -> Result<(), SiteError> {
debug!("copying {} -> {}", filename.display(), output.display());
if let Some(parent) = output.parent() {
trace!("parent: {}", parent.display());
if !parent.exists() {
trace!("create parent {}", parent.display());
std::fs::create_dir_all(parent).map_err(|e| SiteError::CreateDir(parent.into(), e))?;
}
} else {
trace!("does not have parent: {}", output.display());
}
copy(filename, output)?;
Ok(())
}
pub fn join_subpath(parent: &Path, sub: &Path) -> PathBuf {
let sub: PathBuf = sub
.components()
.filter(|c| *c != Component::RootDir)
.collect();
parent.join(sub)
}
pub fn make_relative_link<P: AsRef<Path>>(page: P, target: P) -> PathBuf {
let page = page.as_ref();
let target = target.as_ref().to_path_buf();
assert!(page.is_absolute());
assert!(target.is_absolute());
let mut relative = PathBuf::new();
let mut page = page;
loop {
if let Some(parent) = page.parent() {
if let Ok(sub) = target.strip_prefix(parent) {
let sub = sub.to_path_buf();
return join_subpath(&relative, &sub);
}
relative.push("..");
page = parent;
} else {
return join_subpath(&relative, &target);
}
}
}
pub fn make_path_relative_to(dir: &Path, path: &Path) -> PathBuf {
path.strip_prefix(&dir)
.unwrap_or_else(|_| panic!("remove prefix {} from {}", dir.display(), path.display()))
.into()
}
pub fn make_path_absolute(path: &Path) -> PathBuf {
Path::new("/").join(&path)
}
#[cfg(test)]
mod test {
use super::{
join_subpath, make_path_absolute, make_path_relative_to, make_relative_link, Path, PathBuf,
};
#[test]
fn joins_relative() {
assert_eq!(
join_subpath(Path::new("foo"), Path::new("bar")),
PathBuf::from("foo/bar")
);
}
#[test]
fn joins_absolute() {
assert_eq!(
join_subpath(Path::new("foo"), Path::new("/bar")),
PathBuf::from("foo/bar")
);
}
#[test]
fn makes_relative_link_to_child() {
assert_eq!(
make_relative_link("/foo/bar", "/foo/bar/yo"),
PathBuf::from("bar/yo")
);
}
#[test]
fn makes_relative_link_to_sibling() {
assert_eq!(
make_relative_link("/foo/bar", "/foo/yo"),
PathBuf::from("yo")
);
}
#[test]
fn makes_relative_link_to_cousin() {
assert_eq!(
make_relative_link("/foo/bar/yo", "/foo/baz/yoyo"),
PathBuf::from("../baz/yoyo")
);
}
#[test]
fn makes_relative_link_to_unrelated_page() {
assert_eq!(
make_relative_link("/foo/bar", "/yo/yoyo"),
PathBuf::from("../yo/yoyo")
);
}
#[test]
fn makes_relative_path() {
assert_eq!(
make_path_relative_to(Path::new("/foo"), Path::new("/foo/bar/yo.mdwn")),
PathBuf::from("bar/yo.mdwn")
);
}
#[test]
fn makes_absolute_path() {
assert_eq!(
make_path_absolute(Path::new("/foo/bar")),
PathBuf::from("/foo/bar")
);
}
}
|
