Merge pull request #295 from budziq/err_ch
Friendlier errors from build.rs and support for Windows stylus build
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commit
35ef31757b
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@ -40,6 +40,9 @@ ws = { version = "0.7", optional = true}
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[dev-dependencies]
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tempdir = "0.3.4"
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[build-dependencies]
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error-chain = "0.10"
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[features]
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default = ["output", "watch", "serve"]
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debug = []
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85
build.rs
85
build.rs
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@ -3,28 +3,93 @@
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use std::process::Command;
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use std::env;
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use std::path::Path;
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#[macro_use]
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extern crate error_chain;
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fn main() {
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#[cfg(windows)]
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mod execs {
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pub const NPM: &'static str = "npm.cmd";
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pub const STYLUS: &'static str = "stylus.cmd";
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}
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#[cfg(not(windows))]
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mod execs {
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pub const NPM: &'static str = "npm";
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pub const STYLUS: &'static str = "stylus";
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}
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error_chain!{
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foreign_links {
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Io(std::io::Error);
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}
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}
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fn program_exists(program: &str) -> Result<()> {
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Command::new(program)
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.arg("-v")
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.output()
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.chain_err(|| format!("Please install '{}'!", program))?;
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Ok(())
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}
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fn npm_package_exists(package: &str) -> Result<()> {
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let status = Command::new(execs::NPM)
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.args(&["list", "-g"])
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.arg(package)
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.output();
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match status {
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Ok(ref out) if out.status.success() => Ok(()),
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_ => {
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bail!("Missing npm package '{0}' \
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install with: 'npm -g install {0}'",
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package)
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},
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}
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}
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pub enum Resource<'a> {
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Program(&'a str),
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Package(&'a str),
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}
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use Resource::{Program, Package};
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impl<'a> Resource<'a> {
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pub fn exists(&self) -> Result<()> {
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match *self {
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Program(name) => program_exists(name),
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Package(name) => npm_package_exists(name),
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}
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}
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}
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fn run() -> Result<()> {
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if let Ok(_) = env::var("CARGO_FEATURE_REGENERATE_CSS") {
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// Check dependencies
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Program(execs::NPM).exists()?;
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Program("node").exists().or(Program("nodejs").exists())?;
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Package("nib").exists()?;
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Package("stylus").exists()?;
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// Compile stylus stylesheet to css
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let manifest_dir = env::var("CARGO_MANIFEST_DIR").unwrap();
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let manifest_dir = env::var("CARGO_MANIFEST_DIR")
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.chain_err(|| "Please run the script with: 'cargo build'!")?;
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let theme_dir = Path::new(&manifest_dir).join("src/theme/");
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let stylus_dir = theme_dir.join("stylus/book.styl");
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if !Command::new("stylus")
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.arg(format!("{}", stylus_dir.to_str().unwrap()))
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if !Command::new(execs::STYLUS)
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.arg(stylus_dir)
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.arg("--out")
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.arg(format!("{}", theme_dir.to_str().unwrap()))
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.arg(theme_dir)
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.arg("--use")
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.arg("nib")
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.status()
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.unwrap()
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.status()?
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.success() {
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panic!("Stylus encoutered an error");
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bail!("Stylus encoutered an error");
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}
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}
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Ok(())
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}
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quick_main!(run);
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