Changed:

- Reworked `dcr.toml` handling: added read, validation, and edit through `core::config`
- `new` and `init` use the new config creation logic
- `build` and `run` now require `dcr.toml` and read `compiler` and `name` from it

Cargo.lock

@@ -62,11 +62,12 @@ checksum = "613afe47fcd5fac7ccf1db93babcb082c5994d996f20b8b159f2ad1658eb5724"
 
 [[package]]
 name = "dcr"
-version = "0.2.1"
+version = "0.2.2"
 dependencies = [
  "reqwest",
  "self-replace",
  "serde",
+ "toml",
 ]
 
 [[package]]
@@ -878,6 +879,15 @@ dependencies = [
  "zmij",
 ]
 
+[[package]]
+name = "serde_spanned"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f8bbf91e5a4d6315eee45e704372590b30e260ee83af6639d64557f51b067776"
+dependencies = [
+ "serde_core",
+]
+
 [[package]]
 name = "serde_urlencoded"
 version = "0.7.1"
@@ -1043,6 +1053,45 @@ dependencies = [
  "tokio",
 ]
 
+[[package]]
+name = "toml"
+version = "1.0.3+spec-1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c7614eaf19ad818347db24addfa201729cf2a9b6fdfd9eb0ab870fcacc606c0c"
+dependencies = [
+ "indexmap",
+ "serde_core",
+ "serde_spanned",
+ "toml_datetime",
+ "toml_parser",
+ "toml_writer",
+ "winnow",
+]
+
+[[package]]
+name = "toml_datetime"
+version = "1.0.0+spec-1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "32c2555c699578a4f59f0cc68e5116c8d7cabbd45e1409b989d4be085b53f13e"
+dependencies = [
+ "serde_core",
+]
+
+[[package]]
+name = "toml_parser"
+version = "1.0.9+spec-1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "702d4415e08923e7e1ef96cd5727c0dfed80b4d2fa25db9647fe5eb6f7c5a4c4"
+dependencies = [
+ "winnow",
+]
+
+[[package]]
+name = "toml_writer"
+version = "1.0.6+spec-1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ab16f14aed21ee8bfd8ec22513f7287cd4a91aa92e44edfe2c17ddd004e92607"
+
 [[package]]
 name = "tower"
 version = "0.5.3"
@@ -1466,6 +1515,12 @@ version = "0.53.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d6bbff5f0aada427a1e5a6da5f1f98158182f26556f345ac9e04d36d0ebed650"
 
+[[package]]
+name = "winnow"
+version = "0.7.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5a5364e9d77fcdeeaa6062ced926ee3381faa2ee02d3eb83a5c27a8825540829"
+
 [[package]]
 name = "wit-bindgen"
 version = "0.51.0"

Cargo.toml

@@ -1,10 +1,11 @@
 [package]
 name = "dcr"
-version = "0.2.1"
+version = "0.2.2"
 edition = "2024"
 build = "build.rs"
 
 [dependencies]
 reqwest = { version = "0.12", default-features = false, features = ["blocking", "json", "rustls-tls"] }
 serde = { version = "1", features = ["derive"] }
-self-replace = "1"
+self-replace = "1"
+toml = "1.0.3"

src/cli/build.rs

@@ -1,4 +1,5 @@
-use crate::config::{PROFILE, PROJECT_COMPILER, flags};
+use crate::config::{PROFILE, flags};
+use crate::core::config::Config;
 use crate::utils::fs::check_dir;
 use crate::utils::log::{error, warn};
 use crate::utils::text::{BOLD_GREEN, colored};
@@ -8,10 +9,6 @@ use std::time::Instant;
 
 pub fn build(args: &[String]) -> i32 {
     let mut active_profile = PROFILE.to_string();
-    let project_name = std::env::current_dir()
-        .ok()
-        .and_then(|p| p.file_name().map(|v| v.to_string_lossy().to_string()))
-        .unwrap_or_else(|| "project".to_string());
 
     let items = check_dir(None).unwrap_or_default();
     if !items.contains(&"dcr.toml".to_string()) {
@@ -19,6 +16,22 @@ pub fn build(args: &[String]) -> i32 {
         return 1;
     }
 
+    let config = match Config::open("./dcr.toml") {
+        Ok(cfg) => cfg,
+        Err(_) => {
+            error("dcr.toml file not found");
+            return 1;
+        }
+    };
+    let project_compiler: &str = config
+        .get("package.compiler")
+        .and_then(|v| v.as_str())
+        .unwrap_or("");
+    let project_name: &str = config
+        .get("package.name")
+        .and_then(|v| v.as_str())
+        .unwrap_or("");
+
     if let Some(first_arg) = args.first() {
         if first_arg.starts_with("--") {
             let candidate = first_arg.trim_start_matches("--");
@@ -36,9 +49,9 @@ pub fn build(args: &[String]) -> i32 {
 
     println!(
         "    Building project `{}`\n    Profile: {}\n    Compiler: {}\n",
-        colored(&project_name, BOLD_GREEN),
+        colored(project_name, BOLD_GREEN),
         colored(&active_profile, BOLD_GREEN),
-        colored(PROJECT_COMPILER, BOLD_GREEN)
+        colored(project_compiler, BOLD_GREEN)
     );
 
     if !items.contains(&"target".to_string()) {
@@ -53,12 +66,13 @@ pub fn build(args: &[String]) -> i32 {
     if src_items.contains(&"main.c".to_string()) {
         let compile_flags = flags(&active_profile).unwrap_or(&[]);
         let start_time = Instant::now();
-        let mut cmd = Command::new(PROJECT_COMPILER);
+        let mut cmd = Command::new(project_compiler);
         cmd.arg("./src/main.c");
         for flag in compile_flags {
             cmd.arg(flag);
         }
-        cmd.arg("-o").arg(format!("./target/{active_profile}/main"));
+        cmd.arg("-o")
+            .arg(format!("./target/{active_profile}/{project_name}"));
 
         match cmd.status() {
             Ok(status) if status.success() => {

src/cli/init.rs

@@ -1,9 +1,11 @@
-use crate::config::{FILE_MAIN_C, file_dcr_toml};
+use crate::config::FILE_MAIN_C;
+use crate::core::config::Config;
 use crate::utils::fs::check_dir;
 use crate::utils::log::{error, warn};
 use crate::utils::text::{BOLD_CYAN, BOLD_GREEN, colored, printc};
 use std::fs;
 use std::io::Write;
+use toml::Value;
 
 pub fn init(args: &[String]) -> i32 {
     if !args.is_empty() {
@@ -27,15 +29,15 @@ pub fn init(args: &[String]) -> i32 {
         .unwrap_or_else(|_| ".".to_string());
     println!("Initializing the project in {cwd}");
 
-    let mut dcr_toml = match fs::File::create("./dcr.toml") {
-        Ok(file) => file,
+    let mut config = match Config::new("./dcr.toml") {
+        Ok(cfg) => cfg,
         Err(_) => {
             error("Failed to create dcr.toml");
             return 1;
         }
     };
-    if dcr_toml
-        .write_all(file_dcr_toml(&project_name).as_bytes())
+    if config
+        .edit("package.name", Value::String(project_name.clone()))
         .is_err()
     {
         error("Failed to write dcr.toml");
@@ -43,7 +45,7 @@ pub fn init(args: &[String]) -> i32 {
     }
     println!(
         "    {} Created file {}",
-        colored("✔", BOLD_CYAN),
+        colored("✔", BOLD_GREEN),
         colored("dcr.toml", BOLD_CYAN)
     );
 
@@ -73,6 +75,6 @@ pub fn init(args: &[String]) -> i32 {
         colored(project_name.as_str(), BOLD_GREEN)
     );
     printc("Next step:", BOLD_GREEN);
-    printc("    cd {}\n    dcr run", project_name.as_str());
+    printc("    dcr run", BOLD_CYAN);
     0
 }

src/cli/new.rs

@@ -1,9 +1,11 @@
-use crate::config::{FILE_MAIN_C, file_dcr_toml};
+use crate::config::FILE_MAIN_C;
+use crate::core::config::Config;
 use crate::utils::fs::check_dir;
 use crate::utils::log::{error, warn};
 use crate::utils::text::{BOLD_CYAN, BOLD_GREEN, colored, printc};
 use std::fs;
 use std::io::Write;
+use toml::Value;
 
 pub fn new(args: &[String]) -> i32 {
     let items = check_dir(None).unwrap_or_default();
@@ -42,20 +44,20 @@ pub fn new(args: &[String]) -> i32 {
     }
     println!(
         "    {} Directory created {}",
-        colored("✔", BOLD_CYAN),
+        colored("✔", BOLD_GREEN),
         project_name
     );
 
     let toml_path = format!("./{project_name}/dcr.toml");
-    let mut dcr_toml = match fs::File::create(&toml_path) {
-        Ok(file) => file,
+    let mut config = match Config::new(&toml_path) {
+        Ok(cfg) => cfg,
         Err(_) => {
             error("Failed to create dcr.toml");
             return 1;
         }
     };
-    if dcr_toml
-        .write_all(file_dcr_toml(project_name).as_bytes())
+    if config
+        .edit("package.name", Value::String(project_name.to_string()))
         .is_err()
     {
         error("Failed to write dcr.toml");
@@ -63,7 +65,7 @@ pub fn new(args: &[String]) -> i32 {
     }
     println!(
         "    {} Created file {}",
-        colored("✔", BOLD_CYAN),
+        colored("✔", BOLD_GREEN),
         colored("dcr.toml", BOLD_CYAN)
     );
 
@@ -94,6 +96,6 @@ pub fn new(args: &[String]) -> i32 {
         colored(project_name, BOLD_GREEN)
     );
     printc("Next step:", BOLD_GREEN);
-    printc("    cd {}\n    dcr run", project_name);
+    printc(&format!("    cd {}\n    dcr run", project_name), BOLD_CYAN);
     0
 }

src/cli/run.rs

@@ -1,5 +1,6 @@
 use crate::cli::build::build;
 use crate::config::{PROFILE, flags};
+use crate::core::config::Config;
 use crate::utils::fs::check_dir;
 use crate::utils::log::{error, warn};
 use crate::utils::text::{BOLD_GREEN, colored};
@@ -14,6 +15,18 @@ pub fn run(args: &[String]) -> i32 {
         return 1;
     }
 
+    let config = match Config::open("./dcr.toml") {
+        Ok(cfg) => cfg,
+        Err(_) => {
+            error("dcr.toml file not found");
+            return 1;
+        }
+    };
+    let project_name: &str = config
+        .get("package.name")
+        .and_then(|v| v.as_str())
+        .unwrap_or("");
+
     if let Some(first_arg) = args.first() {
         if first_arg.starts_with("--") {
             let candidate = first_arg.trim_start_matches("--");
@@ -32,11 +45,11 @@ pub fn run(args: &[String]) -> i32 {
     let build_status = build(args);
     if build_status == 0 {
         println!(
-            "\n    {} target/{active_profile}/main",
+            "\n    {} target/{active_profile}/{project_name}",
             colored("Running", BOLD_GREEN)
         );
         println!("--------------------------------");
-        return Command::new(format!("./target/{active_profile}/main"))
+        return Command::new(format!("./target/{active_profile}/{project_name}"))
             .status()
             .map(|status| status.code().unwrap_or(1))
             .unwrap_or(1);
@@ -47,7 +60,7 @@ pub fn run(args: &[String]) -> i32 {
         .contains(&active_profile)
     {
         warn("Launch of the latest release");
-        return Command::new(format!("./target/{active_profile}/main"))
+        return Command::new(format!("./target/{active_profile}/{project_name}"))
             .status()
             .map(|status| status.code().unwrap_or(1))
             .unwrap_or(1);

src/config.rs

@@ -1,24 +1,4 @@
-pub const PROJECT_VERSION: &str = "0.1.0";
-pub const PROJECT_LANGUAGE: &str = "c";
-pub const PROJECT_COMPILER: &str = "clang";
 pub const PROFILE: &str = "debug";
-
-pub fn file_dcr_toml(project_name: &str) -> String {
-    format!(
-        r#"[package]
-name = "{project_name}"
-version = "{project_version}"
-language = "{project_language}"
-compiler = "{project_compiler}"
-
-[dependencies]
-"#,
-        project_version = PROJECT_VERSION,
-        project_language = PROJECT_LANGUAGE,
-        project_compiler = PROJECT_COMPILER
-    )
-}
-
 pub const FILE_MAIN_C: &str = r#"#include <stdio.h>
 
 int main(void) {

src/core/config.rs

@@ -0,0 +1,193 @@
+use std::fs;
+use std::path::{Path, PathBuf};
+use toml::Value;
+use toml::map::Map;
+
+const DEFAULT_VERSION: &str = "0.1.0";
+const DEFAULT_LANGUAGE: &str = "c";
+const DEFAULT_COMPILER: &str = "clang";
+
+#[derive(Debug)]
+pub enum ConfigError {
+    Io(std::io::Error),
+    TomlDe(toml::de::Error),
+    TomlSer(toml::ser::Error),
+    Invalid(String),
+}
+
+impl std::fmt::Display for ConfigError {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            ConfigError::Io(err) => write!(f, "I/O error: {err}"),
+            ConfigError::TomlDe(err) => write!(f, "TOML parse error: {err}"),
+            ConfigError::TomlSer(err) => write!(f, "TOML serialize error: {err}"),
+            ConfigError::Invalid(msg) => write!(f, "Invalid config: {msg}"),
+        }
+    }
+}
+
+impl std::error::Error for ConfigError {}
+
+impl From<std::io::Error> for ConfigError {
+    fn from(err: std::io::Error) -> Self {
+        ConfigError::Io(err)
+    }
+}
+
+impl From<toml::de::Error> for ConfigError {
+    fn from(err: toml::de::Error) -> Self {
+        ConfigError::TomlDe(err)
+    }
+}
+
+impl From<toml::ser::Error> for ConfigError {
+    fn from(err: toml::ser::Error) -> Self {
+        ConfigError::TomlSer(err)
+    }
+}
+
+pub struct Config {
+    path: PathBuf,
+    data: Value,
+}
+
+impl Config {
+    pub fn new(path: &str) -> Result<Self, ConfigError> {
+        let path = PathBuf::from(path);
+        let data = if path.exists() {
+            read_toml(&path)?
+        } else {
+            let default_value = default_toml()?;
+            write_toml(&path, &default_value)?;
+            default_value
+        };
+        let cfg = Self { path, data };
+        cfg.validate()?;
+        Ok(cfg)
+    }
+
+    pub fn open(path: &str) -> Result<Self, ConfigError> {
+        let path = PathBuf::from(path);
+        if !path.exists() {
+            return Err(ConfigError::Invalid("dcr.toml not found".into()));
+        }
+        let data = read_toml(&path)?;
+        let cfg = Self { path, data };
+        cfg.validate()?;
+        Ok(cfg)
+    }
+
+    pub fn get(&self, key: &str) -> Option<&Value> {
+        let parts: Vec<&str> = key.split('.').collect();
+        get_path(&self.data, &parts)
+    }
+
+    #[allow(dead_code)]
+    pub fn add(&mut self, key: &str, value: Value) -> Result<(), ConfigError> {
+        self.set(key, value)
+    }
+
+    pub fn edit(&mut self, key: &str, value: Value) -> Result<(), ConfigError> {
+        self.set(key, value)
+    }
+    #[allow(dead_code)]
+    pub fn check(&self) -> bool {
+        self.validate().is_ok()
+    }
+
+    pub fn validate(&self) -> Result<(), ConfigError> {
+        let package = self
+            .get("package")
+            .and_then(|v| v.as_table())
+            .ok_or_else(|| ConfigError::Invalid("missing [package]".into()))?;
+
+        for key in ["name", "version", "language", "compiler"] {
+            let value = package.get(key).and_then(|v| v.as_str()).unwrap_or("");
+            if value.trim().is_empty() {
+                return Err(ConfigError::Invalid(format!("package.{key} is empty")));
+            }
+        }
+        Ok(())
+    }
+
+    pub fn save(&self) -> Result<(), ConfigError> {
+        write_toml(&self.path, &self.data)
+    }
+
+    fn set(&mut self, key: &str, value: Value) -> Result<(), ConfigError> {
+        let parts: Vec<&str> = key.split('.').collect();
+        set_path(&mut self.data, &parts, value)?;
+        self.save()?;
+        Ok(())
+    }
+}
+
+fn read_toml(path: &Path) -> Result<Value, ConfigError> {
+    let content = fs::read_to_string(path)?;
+    Ok(toml::from_str(&content)?)
+}
+
+fn write_toml(path: &Path, value: &Value) -> Result<(), ConfigError> {
+    let content = toml::to_string(value)?;
+    fs::write(path, content)?;
+    Ok(())
+}
+
+fn default_toml() -> Result<Value, ConfigError> {
+    let name = std::env::current_dir()
+        .ok()
+        .and_then(|p| p.file_name().map(|v| v.to_string_lossy().to_string()))
+        .unwrap_or_else(|| "project".to_string());
+
+    let mut package = Map::new();
+    package.insert("name".to_string(), Value::String(name));
+    package.insert(
+        "version".to_string(),
+        Value::String(DEFAULT_VERSION.to_string()),
+    );
+    package.insert(
+        "language".to_string(),
+        Value::String(DEFAULT_LANGUAGE.to_string()),
+    );
+    package.insert(
+        "compiler".to_string(),
+        Value::String(DEFAULT_COMPILER.to_string()),
+    );
+
+    let mut root = Map::new();
+    root.insert("package".to_string(), Value::Table(package));
+    root.insert("dependencies".to_string(), Value::Table(Map::new()));
+
+    Ok(Value::Table(root))
+}
+
+fn get_path<'a>(value: &'a Value, path: &[&str]) -> Option<&'a Value> {
+    let mut current = value;
+    for key in path {
+        current = current.as_table()?.get(*key)?;
+    }
+    Some(current)
+}
+
+fn set_path(value: &mut Value, path: &[&str], new_value: Value) -> Result<(), ConfigError> {
+    let mut current = value
+        .as_table_mut()
+        .ok_or_else(|| ConfigError::Invalid("root is not a table".into()))?;
+
+    for key in &path[..path.len().saturating_sub(1)] {
+        if !current.contains_key(*key) {
+            current.insert((*key).to_string(), Value::Table(Map::new()));
+        }
+        current = current
+            .get_mut(*key)
+            .and_then(|v| v.as_table_mut())
+            .ok_or_else(|| ConfigError::Invalid(format!("'{key}' is not a table")))?;
+    }
+
+    if let Some(last) = path.last() {
+        current.insert((*last).to_string(), new_value);
+        Ok(())
+    } else {
+        Err(ConfigError::Invalid("empty key".into()))
+    }
+}

src/core/mod.rs

@@ -0,0 +1 @@
+pub mod config;

src/main.rs

@@ -1,6 +1,7 @@
 use crate::utils::log::error;
 mod cli;
 mod config;
+mod core;
 mod utils;
 
 fn main() {