Adrian Heine
5 years ago
4 changed files with 103 additions and 0 deletions
@ -0,0 +1,79 @@ |
|||||
|
use std::error::Error;
|
||||
|
use std::fmt;
|
||||
|
use std::fs::{metadata, File};
|
||||
|
use std::io::copy;
|
||||
|
use std::marker::PhantomData;
|
||||
|
use std::path::Path;
|
||||
|
|
||||
|
use crate::resources::Resource;
|
||||
|
use crate::symbols::{Action, OwnedSymbolAction, Symbol, SymbolAction, SymbolRunner};
|
||||
|
|
||||
|
pub struct Concat<S, D, I> {
|
||||
|
target: D,
|
||||
|
sources: S,
|
||||
|
source_item: PhantomData<I>,
|
||||
|
}
|
||||
|
|
||||
|
impl<S, D, I> Concat<S, D, I> {
|
||||
|
pub fn new(sources: S, target: D) -> Self {
|
||||
|
Self {
|
||||
|
target,
|
||||
|
sources,
|
||||
|
source_item: PhantomData::default(),
|
||||
|
}
|
||||
|
}
|
||||
|
}
|
||||
|
|
||||
|
impl<S: AsRef<[I]>, D: AsRef<Path>, I: AsRef<Path>> Symbol for Concat<S, D, I> {
|
||||
|
fn target_reached(&self) -> Result<bool, Box<dyn Error>> {
|
||||
|
let target = self.target.as_ref();
|
||||
|
if !target.exists() {
|
||||
|
return Ok(false);
|
||||
|
}
|
||||
|
let target_date = metadata(target)?.modified()?;
|
||||
|
for source in self.sources.as_ref() {
|
||||
|
if metadata(source)?.modified()? > target_date {
|
||||
|
return Ok(false);
|
||||
|
}
|
||||
|
}
|
||||
|
Ok(true)
|
||||
|
}
|
||||
|
|
||||
|
fn execute(&self) -> Result<(), Box<dyn Error>> {
|
||||
|
let mut file = File::create(self.target.as_ref())?;
|
||||
|
for source in self.sources.as_ref() {
|
||||
|
copy(&mut File::open(source)?, &mut file)?;
|
||||
|
}
|
||||
|
Ok(())
|
||||
|
}
|
||||
|
|
||||
|
fn get_prerequisites(&self) -> Vec<Resource> {
|
||||
|
let mut r: Vec<Resource> = self
|
||||
|
.sources
|
||||
|
.as_ref()
|
||||
|
.iter()
|
||||
|
.map(|s| Resource::new("file", s.as_ref().to_str().unwrap()))
|
||||
|
.collect();
|
||||
|
if let Some(parent) = self.target.as_ref().parent() {
|
||||
|
r.push(Resource::new("dir", parent.to_str().unwrap()))
|
||||
|
}
|
||||
|
r
|
||||
|
}
|
||||
|
|
||||
|
fn as_action<'a>(&'a self, runner: &'a dyn SymbolRunner) -> Box<dyn Action + 'a> {
|
||||
|
Box::new(SymbolAction::new(runner, self))
|
||||
|
}
|
||||
|
|
||||
|
fn into_action<'a>(self: Box<Self>, runner: &'a dyn SymbolRunner) -> Box<dyn Action + 'a>
|
||||
|
where
|
||||
|
Self: 'a,
|
||||
|
{
|
||||
|
Box::new(OwnedSymbolAction::new(runner, *self))
|
||||
|
}
|
||||
|
}
|
||||
|
|
||||
|
impl<S, D: AsRef<Path>, I> fmt::Display for Concat<S, D, I> {
|
||||
|
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> Result<(), fmt::Error> {
|
||||
|
write!(f, "Concat {}", self.target.as_ref().display())
|
||||
|
}
|
||||
|
}
|
Write
Preview
Loading…
Cancel
Save
Reference in new issue