compiles main classes (todo dependencies)

Cargo.lock

@@ -98,6 +98,16 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
+[[package]]
+name = "colored"
+version = "2.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cbf2150cce219b664a8a70df7a1f933836724b503f8a413af9365b4dcc4d90b8"
+dependencies = [
+ "lazy_static",
+ "windows-sys 0.48.0",
+]
+
 [[package]]
 name = "core-foundation"
 version = "0.9.4"
@@ -423,6 +433,7 @@ version = "0.1.0"
 dependencies = [
  "anyhow",
  "bytes",
+ "colored",
  "hex",
  "home",
  "reqwest",

Cargo.toml

@@ -9,6 +9,7 @@ edition = "2021"
 toml = "0.8"
 anyhow = "1.0"
 strong-xml = "0.6"
+colored = "2.0"
 reqwest = {version = "0.11", features = ["blocking"]}
 tokio = { version = "1", features = ["full"] }
 bytes = "1.5"

README.md

@@ -1,10 +1,8 @@
 **Jargo**
 
-Exploring the need/possibility to move from maven/gradle to cargo.
+An experimental build tool for Java taking inspiration from Cargo.
 
-That is, build tool for java taking inspiration from Cargo
-
-And it's called Jargo. I do not wish to put a J in front of anything, as is the java tradition, 
+And it's called *Jargo*. I do not wish to put a J in front of anything, as is the java tradition, 
 but 'jargo' actually sounds kinda nice and it conveys pretty much what it is. 
 
 It is NOT a new maven (not yet at least). That's the reason it's not called 'raven.'
@@ -12,8 +10,8 @@ It is NOT a new maven (not yet at least). That's the reason it's not called 'rav
 Basic premisses:
 1. written in Rust
 2. does NOT copy anything from the maven philosophy (phases, goals etc). Instead find out on the go what would be 
-a good design
-3. uses TOML
+a good design. _That said, some things are just good to keep using, such as the default project structure._
+3. configured in TOML. ie. no XML, **yay!**, AND no Turing-completeness (groovy/kotlin in gradle), **yay2!!**
 
 see [tests/sample_project/Jargo.toml](https://github.com/shautvast/jargo/blob/main/tests/sample_project/Jargo.toml) to get an impression of what that looks like.
 
@@ -38,7 +36,8 @@ _Every tool is currently being rewritten in rust._ And for good reason!
 
 2. Why not create a drop-in replacement for maven written in rust?
 
-_While that would make migration a no-brainer, it seems too ambitious based on what I've seen of the maven 
-codebase_
+_While that would (in theory) make migration a no-brainer, it seems too ambitious based on what I've seen of the maven 
+codebase. Other than that you will most likely run into onforeseen issues while migrating this way, because this or 
+that is subtly different here and there. Better avoid the promise of easy migration altogether._
 
 

src/compile/mod.rs

@@ -0,0 +1,107 @@
+use std::fs;
+use std::path::{Path, PathBuf};
+use std::process::Command;
+
+use anyhow::Error;
+use colored::Colorize;
+use crate::compile::PathNode::*;
+
+use crate::Project;
+
+const SOURCES: &str = "src/main/java";
+const TESTSOURCES: &str = "src/test/java";
+const RESOURCES: &str = "src/main/resources";
+const TESTRESOURCES: &str = "src/main/java";
+
+const TARGET_MAIN: &str = "target/classes";
+const TARGET_TEST: &str = "target/test-classes";
+
+
+#[derive(Debug)]
+enum PathNode {
+    DirNode(PathBuf, Vec<PathNode>, Vec<PathNode>),
+    FileNode(PathBuf),
+}
+
+pub fn run(project: &Project) -> Result<(), Error> {
+    println!("{} {}.{}-{}", "Compiling".green(), project.group, project.name, project.version);
+
+    let root = PathBuf::from(&project.project_root).join(SOURCES);
+
+    let mut src_tree = DirNode(root.clone(), Vec::new(), Vec::new());
+    determine_src_tree(root, &mut src_tree)?;
+    println!("{:?}", src_tree);
+
+    compile_sourcedir(project, &mut src_tree)?;
+
+    Ok(())
+}
+
+fn compile_sourcedir(project: &Project, src_tree: &mut PathNode) -> Result<(), Error> {
+    if let DirNode(dir_name, subdirs, contents) = src_tree {
+        if !contents.is_empty() {
+            let mut javac = if cfg!(target_os = "windows") {
+                vec!["/C"]
+            } else {
+                vec![]
+            };
+            let classes = PathBuf::from(&project.project_root).join(TARGET_MAIN);
+            let classes = classes.to_str().unwrap();
+
+            javac.append(&mut vec!["javac", "-d", classes, "-sourcepath"]);
+            javac.push(dir_name.to_str().unwrap().into());
+            for source in contents {
+                if let FileNode(source_name) = source {
+                    let name = source_name.to_str().unwrap();
+                    javac.push(name);
+                }
+            }
+
+            let output = if cfg!(target_os = "windows") {
+                Command::new("cmd")
+                    .args(javac)
+                    .output()
+                    .expect("failed to execute process")
+            } else {
+                Command::new("sh")
+                    .arg("-c")
+                    .arg(javac.join(" "))
+                    .output()
+                    .expect("failed to execute process")
+            };
+            if !output.stderr.is_empty() {
+                println!("{}", String::from_utf8(output.stderr)?.red());
+            }
+            println!("{}", String::from_utf8(output.stdout)?);
+        }
+        for subdir in subdirs {
+            compile_sourcedir(project, subdir)?;
+        }
+    }
+    Ok(())
+}
+
+fn determine_src_tree(parent: PathBuf, parent_node: &mut PathNode) -> Result<(), Error> {
+    let paths = fs::read_dir(&parent)?;
+
+    for path in paths {
+        let path = path?;
+
+        if path.metadata()?.is_dir() {
+            let mut subdir = DirNode(path.path(), Vec::new(), Vec::new());
+            determine_src_tree(path.path(), &mut subdir)?;
+            if let DirNode(_, subdirs, _) = parent_node {
+                subdirs.push(subdir);
+            }
+        } else {
+            let name = path.file_name();
+            let name = name.to_str().unwrap().to_owned();
+            if name.ends_with(".java") {
+                if let DirNode(_, _, contents) = parent_node {
+                    contents.push(FileNode(path.path()));
+                }
+            }
+        }
+    }
+    Ok(())
+}

src/config.rs

@@ -9,11 +9,11 @@ pub struct Config {
 
 pub static CONFIG: OnceLock<Config> = OnceLock::new();
 
-pub fn get_config() -> &'static Config {
+pub fn config() -> &'static Config {
     CONFIG.get_or_init(|| {
         let user_home = home::home_dir().unwrap();
         Config {
-            cache_location: format!("{}/jargo/repo", user_home.to_str().unwrap()).into(),
+            cache_location: format!("{}/jargo/repo", user_home.to_str().unwrap()).into(),//TODO make '.jargo'
             user_home,
             maven_central: "https://repo.maven.apache.org/maven2".into()
         }

src/deploader.rs

@@ -10,8 +10,9 @@ use sha1::{Digest, Sha1};
 use strong_xml::XmlRead;
 
 use crate::Artifact;
-use crate::config::get_config;
+use crate::config::config;
 use crate::pom::model::Pom;
+use colored::Colorize;
 
 pub fn load_artifacts(artifacts: &[Artifact]) -> Result<(), Error> {
     for art in artifacts {
@@ -21,37 +22,22 @@ pub fn load_artifacts(artifacts: &[Artifact]) -> Result<(), Error> {
 }
 
 pub fn load_artifact(art: &Artifact) -> Result<(), Error> {
-    let artifact_path = format!("{}/{}/{}",
-                                art.group.replace(".", "/"),
-                                art.name,
-                                art.version,
-    );
-    let local_artifact_loc = format!("{}/{}", get_config().cache_location, artifact_path);
+    let artifact_path = format!("{}/{}/{}", art.group.replace(".", "/"), art.name, art.version);
+
+    // check/create artifact directory
+    let local_artifact_loc = format!("{}/{}", config().cache_location, artifact_path);
     if !exists(&local_artifact_loc) {
         fs::create_dir_all(&local_artifact_loc)?;
     }
 
+    // download remote jar if not in cache and check its SHA-1 checksum
     let local_artifact_jar_path = format!("{}/{}-{}.jar", local_artifact_loc, art.name, art.version);
     if !exists(&local_artifact_jar_path) {
-        load_verify_artifact_jar(art, &artifact_path, &local_artifact_jar_path)?;
+        download_verify_artifact_jar(art, &artifact_path, &local_artifact_jar_path)?;
     }
 
-    let local_artifact_pom_path = format!("{}/{}-{}.pom", local_artifact_loc, art.name, art.version);
-    let pom_xml = if !exists(&local_artifact_pom_path) {
-        // download pom
-        let remote_artifact_pom_url = format!("{}/{}/{}-{}.pom", get_config().maven_central, artifact_path, art.name, art.version);
-        println!("Downloading {}", remote_artifact_pom_url);
-        let body = reqwest::blocking::get(&remote_artifact_pom_url)?.text().unwrap();
-        println!("Downloaded {}", remote_artifact_pom_url);
-        write_text(&local_artifact_pom_path, &body)?;
-        body
-    } else {
-        // read local pom file
-        let mut file = File::open(local_artifact_pom_path)?;
-        let mut contents = String::new();
-        file.read_to_string(&mut contents)?;
-        contents
-    };
+    // download remote pom if not in cache //TODO check its SHA-1 checksum
+    let pom_xml = download_verify_pom(art, artifact_path, local_artifact_loc)?;
 
     // parse pom file
     let pom = Pom::from_str(&pom_xml).unwrap();
@@ -61,50 +47,91 @@ pub fn load_artifact(art: &Artifact) -> Result<(), Error> {
     Ok(())
 }
 
-fn load_verify_artifact_jar(art: &Artifact, artifact_path: &str, local_artifact_jar_path: &str) -> Result<(), Error> {
-    let remote_artifact_jar_url = format!("{}/{}/{}-{}.jar", get_config().maven_central, artifact_path, art.name, art.version);
+fn download_verify_pom(art: &Artifact, artifact_path: String, local_artifact_loc: String) -> Result<String, Error> {
+    let local_artifact_pom_path = &format!("{}/{}-{}.pom", local_artifact_loc, art.name, art.version);
+    let remote_artifact_pom_url = format!("{}/{}/{}-{}.pom", config().maven_central, artifact_path, art.name, art.version);
+    let pom_xml = if !exists(local_artifact_pom_path) {
+        println!("{} {}", "Downloading".green(), remote_artifact_pom_url);
+        let body = reqwest::blocking::get(&remote_artifact_pom_url)?.text().unwrap();
+        println!("{} {}", "Downloaded".green(), remote_artifact_pom_url);
+        write_text(local_artifact_pom_path, &body)?;
+        body
+    } else {
+        read_file_to_string(local_artifact_pom_path)?
+    };
 
-    println!("Downloading {}", remote_artifact_jar_url);
+    let local_artifact_pom_sha1_path = format!("{}.sha1", local_artifact_pom_path);
+
+    // verify jarfile with SHA1 checksum (which is hex encoded)
+    let checksum = hex::decode(
+        if !exists(&local_artifact_pom_sha1_path) {
+            download_checksum(&remote_artifact_pom_url, &local_artifact_pom_sha1_path)?
+        } else {
+            read_file_to_bytes(local_artifact_pom_sha1_path)?
+        })?;
+    let validated = validate_checksum_text(&pom_xml, checksum);
+    if !validated {
+        Err(anyhow!("SHA1 checksum for {} is not valid", remote_artifact_pom_url))
+    } else { Ok(pom_xml) }
+}
+
+
+/// Download jar from remote repo and check its signature
+/// For now it's a blocking call, because async and recursion add unwanted complexity/I don't understand that
+/// TODO add progress bar
+fn download_verify_artifact_jar(art: &Artifact, artifact_path: &str, local_artifact_jar_path: &str) -> Result<(), Error> {
+    let remote_artifact_jar_url = format!("{}/{}/{}-{}.jar", config().maven_central, artifact_path, art.name, art.version);
+
+    println!("{} {}", "Downloading".green(), remote_artifact_jar_url);
     let jar = reqwest::blocking::get(&remote_artifact_jar_url)?.bytes().unwrap();
-    println!("Downloaded {}", remote_artifact_jar_url);
-    write_bytes(&local_artifact_jar_path, jar.clone())?;
+    println!("{} {}", "Downloaded".green(), remote_artifact_jar_url);
+    write_bytes_to_file(&local_artifact_jar_path, &jar)?;
 
     let local_artifact_jar_sha1_path = format!("{}.sha1", local_artifact_jar_path);
 
-
-    // verify jarfile with SHA1 checksum
+    // verify jarfile with SHA1 checksum (which is hex encoded)
     let checksum = hex::decode(
         if !exists(&local_artifact_jar_sha1_path) {
-            let remote_artifact_jar_sha1_url = format!("{}.sha1", remote_artifact_jar_url);
-            println!("{}", remote_artifact_jar_sha1_url);
-            let jar_checksum = reqwest::blocking::get(&remote_artifact_jar_sha1_url)?.bytes().unwrap();
-            write_bytes(&local_artifact_jar_sha1_path, jar_checksum.clone())?;
-            jar_checksum.to_vec()
+            download_checksum(&remote_artifact_jar_url, &local_artifact_jar_sha1_path)?
         } else {
-            let mut file = File::open(local_artifact_jar_sha1_path)?;
-            let mut contents = Vec::new();
-            file.read_to_end(&mut contents)?;
-            contents
+            read_file_to_bytes(local_artifact_jar_sha1_path)?
         })?;
-
-    let mut hasher = Sha1::new();
-    hasher.update(&jar.to_vec());
-    let result = hasher.finalize();
-    let validated = result[..] == checksum;
-
+    let validated = validate_checksum_bytes(&jar, checksum);
     if !validated {
         Err(anyhow!("SHA1 checksum for {} is not valid", remote_artifact_jar_url))
     } else { Ok(()) }
 }
 
+
+fn download_checksum(remote_artifact_url: &String, local_artifact_jar_sha1_path: &String) -> Result<Vec<u8>, Error> {
+    let remote_artifact_jar_sha1_url = format!("{}.sha1", remote_artifact_url);
+    let jar_checksum = reqwest::blocking::get(&remote_artifact_jar_sha1_url)?.bytes().unwrap();
+    write_bytes_to_file(&local_artifact_jar_sha1_path, &jar_checksum)?;
+    Ok(jar_checksum.to_vec())
+}
+
+fn validate_checksum_bytes(jar: &Bytes, checksum: Vec<u8>) -> bool {
+    let mut hasher = Sha1::new();
+    hasher.update(&jar.to_vec());
+    let result = hasher.finalize();
+    result[..] == checksum
+}
+
+fn validate_checksum_text(text: &str, checksum: Vec<u8>) -> bool {
+    let mut hasher = Sha1::new();
+    hasher.update(text.as_bytes());
+    let result = hasher.finalize();
+    result[..] == checksum
+}
+
 fn exists(path: &str) -> bool {
     Path::new(path).exists()
 }
 
 
-fn write_bytes(jar_path: &str, bytes: Bytes) -> Result<(), Error> {
+fn write_bytes_to_file(jar_path: &str, bytes: &Bytes) -> Result<(), Error> {
     let mut file = File::create(jar_path)?;
-    file.write_all(&bytes)?;
+    file.write_all(bytes)?;
     Ok(())
 }
 
@@ -113,3 +140,17 @@ fn write_text(path: &str, contents: &String) -> Result<(), Error> {
     file.write(contents.as_bytes())?;
     Ok(())
 }
+
+fn read_file_to_string(local_artifact_pom_path: &str) -> Result<String, Error> {
+    let mut file = File::open(local_artifact_pom_path)?;
+    let mut contents = String::new();
+    file.read_to_string(&mut contents)?;
+    Ok(contents)
+}
+
+fn read_file_to_bytes(local_artifact_jar_sha1_path: String) -> Result<Vec<u8>, Error> {
+    let mut file = File::open(local_artifact_jar_sha1_path)?;
+    let mut contents = Vec::new();
+    file.read_to_end(&mut contents)?;
+    Ok(contents)
+}

src/lib.rs

@@ -1,4 +1,5 @@
 use std::fs;
+use std::path::Path;
 
 use anyhow::{anyhow, Error};
 use toml::{Table, Value};
@@ -6,6 +7,7 @@ use toml::{Table, Value};
 pub mod pom;
 mod config;
 pub mod deploader;
+pub mod compile;
 
 #[derive(Debug)]
 pub struct Project {
@@ -14,6 +16,7 @@ pub struct Project {
     pub version: String,
     pub dependencies: Vec<Artifact>,
     pub test_dependencies: Vec<Artifact>,
+    pub project_root: String,
 }
 
 #[derive(Debug)]
@@ -51,19 +54,23 @@ impl Artifact {
 }
 
 pub fn load_project(jargo_file: Option<&str>) -> Result<Project, Error> {
-    let project_table = fs::read_to_string(jargo_file.unwrap_or("./Jargo.toml"))?.parse::<Table>()?;
+    let jargo = Path::new(jargo_file.unwrap_or("./Jargo.toml"));
+
+    let project_table = fs::read_to_string(jargo)?.parse::<Table>()?;
     let package = project_table.get("package").expect("package info missing");
 
     let dependencies = get_dependencies(project_table.get("dependencies"))?;
 
     let test_dependencies = get_dependencies(project_table.get("test-dependencies"))?;
 
+
     Ok(Project {
-        group: package.get("group").unwrap().to_string(),
-        name: package.get("name").unwrap().to_string(),
-        version: package.get("version").unwrap().to_string(),
+        group: strip_first_last(package.get("group").unwrap().to_string()),
+        name: strip_first_last(package.get("name").unwrap().to_string()),
+        version: strip_first_last(package.get("version").unwrap().to_string()),
         dependencies,
         test_dependencies,
+        project_root: jargo.parent().map(Path::to_str).unwrap().expect(&format!("projectroot {:?} not usable", jargo)).into(),
     })
 }
 
@@ -81,3 +88,7 @@ fn get_dependencies(table: Option<&Value>) -> Result<Vec<Artifact>, Error> {
     }
     Ok(dependencies)
 }
+
+fn strip_first_last(text: String) -> String{
+    text[1..text.len()-1].into()
+}

src/main.rs

@@ -3,5 +3,6 @@ use anyhow::Error;
 fn main() -> anyhow::Result<(), Error> {
     let project = jargo::load_project(Some("tests/sample_project/Jargo.toml"))?;
     jargo::deploader::load_artifacts(&project.test_dependencies)?;
+    jargo::compile::run(&project)?;
     Ok(())
 }

tests/sample_project/src/main/java/nl/sander/sample/SampleMain.java

@@ -0,0 +1,7 @@
+package nl.sander.sample;
+
+public class SampleMain {
+    public static void main(String[] args) {
+        System.out.println(Sample.getTheNumber());
+    }
+}