Merge pull request #295 from budziq/err_ch

Friendlier errors from build.rs and support for Windows stylus build
This commit is contained in:
Mathieu David 2017-05-22 18:20:57 +02:00 committed by GitHub
commit 35ef31757b
2 changed files with 78 additions and 10 deletions

View File

@ -40,6 +40,9 @@ ws = { version = "0.7", optional = true}
[dev-dependencies]
tempdir = "0.3.4"
[build-dependencies]
error-chain = "0.10"
[features]
default = ["output", "watch", "serve"]
debug = []

View File

@ -3,28 +3,93 @@
use std::process::Command;
use std::env;
use std::path::Path;
#[macro_use]
extern crate error_chain;
fn main() {
#[cfg(windows)]
mod execs {
pub const NPM: &'static str = "npm.cmd";
pub const STYLUS: &'static str = "stylus.cmd";
}
#[cfg(not(windows))]
mod execs {
pub const NPM: &'static str = "npm";
pub const STYLUS: &'static str = "stylus";
}
error_chain!{
foreign_links {
Io(std::io::Error);
}
}
fn program_exists(program: &str) -> Result<()> {
Command::new(program)
.arg("-v")
.output()
.chain_err(|| format!("Please install '{}'!", program))?;
Ok(())
}
fn npm_package_exists(package: &str) -> Result<()> {
let status = Command::new(execs::NPM)
.args(&["list", "-g"])
.arg(package)
.output();
match status {
Ok(ref out) if out.status.success() => Ok(()),
_ => {
bail!("Missing npm package '{0}' \
install with: 'npm -g install {0}'",
package)
},
}
}
pub enum Resource<'a> {
Program(&'a str),
Package(&'a str),
}
use Resource::{Program, Package};
impl<'a> Resource<'a> {
pub fn exists(&self) -> Result<()> {
match *self {
Program(name) => program_exists(name),
Package(name) => npm_package_exists(name),
}
}
}
fn run() -> Result<()> {
if let Ok(_) = env::var("CARGO_FEATURE_REGENERATE_CSS") {
// Check dependencies
Program(execs::NPM).exists()?;
Program("node").exists().or(Program("nodejs").exists())?;
Package("nib").exists()?;
Package("stylus").exists()?;
// Compile stylus stylesheet to css
let manifest_dir = env::var("CARGO_MANIFEST_DIR").unwrap();
let manifest_dir = env::var("CARGO_MANIFEST_DIR")
.chain_err(|| "Please run the script with: 'cargo build'!")?;
let theme_dir = Path::new(&manifest_dir).join("src/theme/");
let stylus_dir = theme_dir.join("stylus/book.styl");
if !Command::new("stylus")
.arg(format!("{}", stylus_dir.to_str().unwrap()))
if !Command::new(execs::STYLUS)
.arg(stylus_dir)
.arg("--out")
.arg(format!("{}", theme_dir.to_str().unwrap()))
.arg(theme_dir)
.arg("--use")
.arg("nib")
.status()
.unwrap()
.status()?
.success() {
panic!("Stylus encoutered an error");
bail!("Stylus encoutered an error");
}
}
Ok(())
}
quick_main!(run);