init project, init toml config parser

.gitignore

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+/target

Cargo.lock

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+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "himalaya"
+version = "0.1.0"
+dependencies = [
+ "toml",
+]
+
+[[package]]
+name = "serde"
+version = "1.0.118"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "06c64263859d87aa2eb554587e2d23183398d617427327cf2b3d0ed8c69e4800"
+
+[[package]]
+name = "toml"
+version = "0.5.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a31142970826733df8241ef35dc040ef98c679ab14d7c3e54d827099b3acecaa"
+dependencies = [
+ "serde",
+]

Cargo.toml

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+[package]
+name = "himalaya"
+version = "0.1.0"
+authors = ["Clément DOUIN <soywod@users.noreply.github.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+toml = "0.5.8"

src/config.rs

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+use std::env;
+use std::fs::File;
+use std::io::Read;
+use std::path::PathBuf;
+use toml::Value;
+
+#[derive(Debug)]
+pub struct Config {
+    name: String,
+    email: String,
+}
+
+impl Config {
+    fn new() -> Config {
+        Config {
+            name: String::new(),
+            email: String::new(),
+        }
+    }
+}
+
+pub fn from_xdg() -> Option<PathBuf> {
+    match env::var("XDG_CONFIG_HOME") {
+        Err(_) => None,
+        Ok(path_str) => {
+            let mut path = PathBuf::from(path_str);
+            path.push("himalaya");
+            path.push("config.toml");
+            Some(path)
+        }
+    }
+}
+
+pub fn from_home() -> Option<PathBuf> {
+    match env::var("HOME") {
+        Err(_) => None,
+        Ok(path_str) => {
+            let mut path = PathBuf::from(path_str);
+            path.push(".config");
+            path.push("himalaya");
+            path.push("config.toml");
+            Some(path)
+        }
+    }
+}
+
+pub fn from_tmp() -> Option<PathBuf> {
+    let mut path = env::temp_dir();
+    path.push("himalaya");
+    path.push("config.toml");
+    Some(path)
+}
+
+pub fn file_path() -> PathBuf {
+    match from_xdg().or_else(from_home).or_else(from_tmp) {
+        None => panic!("Config file path not found."),
+        Some(path) => path,
+    }
+}
+
+pub fn read_file() -> Config {
+    let path = file_path();
+    match File::open(path) {
+        Err(_) => panic!("Config file not found!"),
+        Ok(mut file) => {
+            let mut content = String::new();
+            match file.read_to_string(&mut content) {
+                Err(err) => panic!(err),
+                Ok(_) => {
+                    let toml = content.parse::<Value>().unwrap();
+                    println!("{:?}", toml);
+                    Config::new()
+                }
+            }
+        }
+    }
+}

src/main.rs

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+mod config;
+
+fn main() {
+    println!("{:?}", config::read_file());
+}