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// Build script to compile the flow samples in the crate
use std::{fs, io};
use std::path::Path;
use std::process::{Command, Stdio};
use simpath::{FileType, Simpath};
fn main() {
// let flowc = if Path::new(env!("CARGO_MANIFEST_DIR")).join("../target/debug/flowc").exists() {
// "../target/debug/flowc"
// } else if Simpath::new("PATH").find_type("flowc", FileType::File).is_ok() {
// "flowc"
// } else {
// ""
// };
//
// if flowc.is_empty() {
// println!("cargo:warning=Could not find `flowc` in $PATH or `target/debug`, so cannot build flowsamples");
// } else
if Path::new(env!("CARGO_MANIFEST_DIR")).join("../target/debug/flowc").exists() {
// find all sample sub-folders
fs::read_dir(".").unwrap()
.map(|res| res.map(|e| {
if e.metadata().unwrap().is_dir() {
compile_sample(&e.path(), "../target/debug/flowc");
}
}))
.collect::<Result<Vec<_>, io::Error>>().unwrap();
println!("cargo:rerun-if-env-changed=FLOW_LIB_PATH");
}
}
fn compile_sample(sample_dir: &Path, flowc: &str) {
// Tell Cargo that if the given file changes, to rerun this build script.
println!("cargo:rerun-if-changed={}/context.toml", sample_dir.display());
let mut command = Command::new(flowc);
// -g for debug symbols, -d to dump compiler structs, -s to skip running, only compile the flow
let command_args = vec!("-g", "-d", "-s", sample_dir.to_str().unwrap());
command.args(command_args)
.stdin(Stdio::inherit())
.stdout(Stdio::inherit())
.stderr(Stdio::inherit())
.spawn().unwrap();
}