Start rust implementation

Cargo.lock

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+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "git-build-rs"
+version = "0.1.0"
+dependencies = [
+ "glob",
+ "lazy_static",
+ "serde_json",
+]
+
+[[package]]
+name = "glob"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9b919933a397b79c37e33b77bb2aa3dc8eb6e165ad809e58ff75bc7db2e34574"
+
+[[package]]
+name = "itoa"
+version = "0.4.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b8b7a7c0c47db5545ed3fef7468ee7bb5b74691498139e4b3f6a20685dc6dd8e"
+
+[[package]]
+name = "lazy_static"
+version = "1.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
+
+[[package]]
+name = "ryu"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ed3d612bc64430efeb3f7ee6ef26d590dce0c43249217bddc62112540c7941e1"
+
+[[package]]
+name = "serde"
+version = "1.0.106"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "36df6ac6412072f67cf767ebbde4133a5b2e88e76dc6187fa7104cd16f783399"
+
+[[package]]
+name = "serde_json"
+version = "1.0.52"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a7894c8ed05b7a3a279aeb79025fdec1d3158080b75b98a08faf2806bb799edd"
+dependencies = [
+ "itoa",
+ "ryu",
+ "serde",
+]

Cargo.toml

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+[package]
+name = "git-build-rs"
+version = "0.1.0"
+authors = ["southerntofu"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+glob = "0.3"
+lazy_static = "1.4"
+# Translations
+#serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"

src/log.rs

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+use std::env;
+use std::collections::HashMap;
+use std::path::PathBuf;
+use std::fs;
+
+use lazy_static::lazy_static;
+
+lazy_static!{
+    static ref LOGLEVEL: LogLevel = LogLevel::from_env();
+    static ref LANG: String = lang_from_env();
+    static ref TRANSLATIONS: HashMap<String, String> = load_translations();
+}
+
+fn load_translations() -> HashMap<String, String> {
+    let folder = env::var("I18N").unwrap_or("./i18n/".to_string());
+    let mut path = PathBuf::from(folder);
+    if !path.is_dir() {
+        panic!("Could not find translations in {:?}", path);
+    }
+    path.push(format!("{}.json", *LANG));
+
+    if !path.is_file() {
+        panic!("Could not find translation file: {:?}", path);
+    }
+
+    match fs::read_to_string(&path) {
+        Ok(content) => {
+            //let trans: HashMap<String, String> = serde_json::from_str(&content).expect("Could not load translations");
+            //return trans
+            match serde_json::from_str(&content) {
+                Ok(trans) => trans,
+                Err(e) => panic!("JSON ERROR: {}", e)
+            }
+        },
+        Err(e) => {
+            panic!("IO ERROR: {}", e);
+        }
+    }
+}
+
+fn trans(key: &str) -> String {
+    match TRANSLATIONS.get(key) {
+        Some(t) => t.to_string(),
+        None => {
+            panic!("Unknown translation string in lang {}: {}", *LANG, key);
+        }
+    }
+}
+
+fn lang_from_env() -> String {
+    let lang = env::var("LANG").expect("$LANG not set in environment. Your machine is misconfigured!");
+    lang[0..2].to_string()
+}
+
+
+struct LogLevel {
+    info: bool,
+    debug: bool,
+    error: bool
+}
+
+impl LogLevel {
+    fn from_env() -> LogLevel {
+        // Default values
+        let error = true;
+        let mut info = true;
+        let mut debug = false;
+
+        let env_log = env::var("LOG").unwrap_or("info".to_string());
+        match env_log.to_lowercase().as_str() {
+            "info" => {},
+            "debug" => { debug = true; },
+            "error" => { info = false; }
+            _ => {
+                // This happens before loglevel initialization
+                // so we can't use warn function
+                eprintln!("$LOG level is incorrect: {} (can be: debug, info, error", env_log);
+            }
+        }
+
+        return LogLevel {
+            info,
+            debug,
+            error
+        }
+    }
+}
+
+fn expand(msg: &str, vars: Option<&HashMap<String,&str>>) -> String {
+    let mut trans_string = trans(msg);
+    if vars.is_some() {
+        for (key, val) in vars.unwrap() {
+            trans_string = trans_string.replace(key, val);
+        }
+    }
+    trans_string
+}
+
+pub fn info(msg: &str, vars: Option<&HashMap<String,&str>>) {
+    if LOGLEVEL.info {
+        let trans_string = expand(msg, vars);
+        println!("[git-build] {}", trans_string);
+    }
+}
+
+pub fn error(msg: &str) {
+    if LOGLEVEL.error {
+        eprintln!("ERROR: {}", msg);
+    }
+}
+
+pub fn warn(msg: &str) {
+    if LOGLEVEL.error {
+        eprintln!("WARNING: {}", msg);
+    }
+}
+
+pub fn debug(msg: &str) {
+    if LOGLEVEL.debug {
+        println!("DEBUG: {}", msg);
+    }
+}

src/main.rs

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+use std::env;
+use std::collections::HashMap;
+
+mod log;
+
+fn main() {
+
+    let home_dir = env::var("HOME").expect("$HOME not defined. WTF?");
+    let base_dir = format!("{}/.git-build", home_dir);
+
+    let mut test = HashMap::new();
+    test.insert("$i18n_task".to_string(), "test");
+    log::info("process", Some(&test));
+
+    //let log_level = env::var("LOG").unwrap_or
+}