Added global config directory

+ Should be platform independent thanks to platform-dirs
+ All config files in the directory are used
+ Some optimizations could be made so now all config files are loaded.
+ clippy + fmt

Cargo.lock

@@ -100,6 +100,27 @@ dependencies = [
  "generic-array",
 ]
 
+[[package]]
+name = "dirs-next"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cf36e65a80337bea855cd4ef9b8401ffce06a7baedf2e85ec467b1ac3f6e82b6"
+dependencies = [
+ "cfg-if",
+ "dirs-sys-next",
+]
+
+[[package]]
+name = "dirs-sys-next"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4ebda144c4fe02d1f7ea1a7d9641b6fc6b580adcfa024ae48797ecdeb6825b4d"
+dependencies = [
+ "libc",
+ "redox_users",
+ "winapi",
+]
+
 [[package]]
 name = "formaty"
 version = "0.1.0"
@@ -107,6 +128,7 @@ dependencies = [
  "bitvec",
  "byteorder",
  "num-bigint",
+ "platform-dirs",
  "rust-embed",
  "serde",
  "structopt",
@@ -129,6 +151,17 @@ dependencies = [
  "version_check",
 ]
 
+[[package]]
+name = "getrandom"
+version = "0.2.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9be70c98951c83b8d2f8f60d7065fa6d5146873094452a1008da8c2f1e4205ad"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "wasi",
+]
+
 [[package]]
 name = "heck"
 version = "0.3.3"
@@ -155,9 +188,9 @@ checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
 [[package]]
 name = "libc"
-version = "0.2.101"
+version = "0.2.125"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3cb00336871be5ed2c8ed44b60ae9959dc5b9f08539422ed43f09e34ecaeba21"
+checksum = "5916d2ae698f6de9bfb891ad7a8d65c09d232dc58cc4ac433c7da3b2fd84bc2b"
 
 [[package]]
 name = "num-bigint"
@@ -195,6 +228,15 @@ version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "624a8340c38c1b80fd549087862da4ba43e08858af025b236e509b6649fc13d5"
 
+[[package]]
+name = "platform-dirs"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e188d043c1a692985f78b5464853a263f1a27e5bd6322bad3a4078ee3c998a38"
+dependencies = [
+ "dirs-next",
+]
+
 [[package]]
 name = "proc-macro-error"
 version = "1.0.4"
@@ -243,6 +285,26 @@ version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dc33ff2d4973d518d823d61aa239014831e521c75da58e3df4840d3f47749d09"
 
+[[package]]
+name = "redox_syscall"
+version = "0.2.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "62f25bc4c7e55e0b0b7a1d43fb893f4fa1361d0abe38b9ce4f323c2adfe6ef42"
+dependencies = [
+ "bitflags",
+]
+
+[[package]]
+name = "redox_users"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b033d837a7cf162d7993aded9304e30a83213c648b6e389db233191f891e5c2b"
+dependencies = [
+ "getrandom",
+ "redox_syscall",
+ "thiserror",
+]
+
 [[package]]
 name = "rust-embed"
 version = "6.3.0"
@@ -375,6 +437,26 @@ dependencies = [
  "unicode-width",
 ]
 
+[[package]]
+name = "thiserror"
+version = "1.0.31"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bd829fe32373d27f76265620b5309d0340cb8550f523c1dda251d6298069069a"
+dependencies = [
+ "thiserror-impl",
+]
+
+[[package]]
+name = "thiserror-impl"
+version = "1.0.31"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0396bc89e626244658bef819e22d0cc459e795a5ebe878e6ec336d1674a8d79a"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "toml"
 version = "0.5.8"
@@ -431,6 +513,12 @@ dependencies = [
  "winapi-util",
 ]
 
+[[package]]
+name = "wasi"
+version = "0.10.2+wasi-snapshot-preview1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fd6fbd9a79829dd1ad0cc20627bf1ed606756a7f77edff7b66b7064f9cb327c6"
+
 [[package]]
 name = "winapi"
 version = "0.3.9"

Cargo.toml

@@ -13,3 +13,4 @@ byteorder = "1.4.3"
 num-bigint = "0.4"
 rust-embed="6.3.0"
 bitvec = "1.0.0"
+platform-dirs = "0.3.0"

README.md

@@ -71,9 +71,10 @@ FLAGS:
     -V, --version    Prints version information
 
 OPTIONS:
-    -b, --base <base>                Base of the input values
-    -c, --config <config>            Path to the format config [env: FORMATY_CONFIG=]
-    -i, --input_type <input-type>    Input data type [default: array]
+    -b, --base <base>                      Base of the input values
+    -c, --config <config>                  Path to the format config [env: FORMATY_CONFIG=]
+    -g, --global_config <global-config>    Path to the global config directory [env: FORMATY_GLOBAL_CONFIG=]
+    -i, --input_type <input-type>          Input data type [default: array]
 
 ARGS:
     <format>     Format to parse data as

src/formatter/mod.rs

@@ -2,14 +2,15 @@ pub mod format;
 mod printers;
 
 use crate::formatter::format::Format;
+use platform_dirs::AppDirs;
 use rust_embed::RustEmbed;
 use serde::Deserialize;
 use std::error::Error;
 use std::fmt::{Display, Formatter};
-use std::fs::File;
+use std::fs::{read_dir, File};
 use std::io::Read;
 use std::path::PathBuf;
-use std::str;
+use std::{fs, str};
 
 #[derive(Debug)]
 #[allow(clippy::enum_variant_names)]
@@ -63,21 +64,17 @@ pub struct FormatConfig {
 }
 
 impl FormatConfig {
-    pub fn new(config_path: &Option<PathBuf>) -> Result<Self, FormatConfigError> {
-        let mut config_str = String::new();
-
-        let mut config: FormatConfig = if let Some(config_path) = config_path {
-            let mut config = File::open(config_path)?;
-            config.read_to_string(&mut config_str)?;
-
-            toml::from_str(&config_str).map_err(|e| FormatConfigError::TomlError {
-                file_name: config_path.to_str().unwrap().to_string(),
-                err: e,
-            })?
-        } else {
-            FormatConfig::default()
-        };
+    fn parse_config_file(
+        src_file_name: &str,
+        config_data: &str,
+    ) -> Result<Self, FormatConfigError> {
+        toml::from_str(config_data).map_err(|e| FormatConfigError::TomlError {
+            file_name: src_file_name.to_string(),
+            err: e,
+        })
+    }
 
+    fn get_built_in_config(&mut self) -> Result<(), FormatConfigError> {
         for format_file_path in BuiltInFormats::iter() {
             if format_file_path.ends_with("md") {
                 continue;
@@ -88,14 +85,69 @@ impl FormatConfig {
             let config_str = str::from_utf8(&format_file.data).unwrap();
 
             let mut built_in: FormatConfig =
-                toml::from_str(config_str).map_err(|e| FormatConfigError::TomlError {
-                    file_name: format_file_path.to_string(),
-                    err: e,
-                })?;
+                Self::parse_config_file(&format_file_path, config_str)?;
 
-            config.formats.append(&mut built_in.formats);
+            self.formats.append(&mut built_in.formats);
         }
 
+        Ok(())
+    }
+
+    fn get_file_config(&mut self, config_path: &Option<PathBuf>) -> Result<(), FormatConfigError> {
+        if let Some(config_path) = config_path {
+            let mut config_file = File::open(config_path)?;
+            let mut config_data = String::new();
+            config_file.read_to_string(&mut config_data)?;
+            let mut arg_config =
+                Self::parse_config_file(config_path.to_str().unwrap(), &config_data)?;
+
+            self.formats.append(&mut arg_config.formats);
+        }
+
+        Ok(())
+    }
+
+    fn parse_directory(
+        &mut self,
+        directory_path: &Option<PathBuf>,
+    ) -> Result<(), FormatConfigError> {
+        if let Some(directory_path) = directory_path {
+            for path in read_dir(directory_path)? {
+                let file_name = path?.file_name();
+                let config_file_path = directory_path.join(file_name);
+
+                self.get_file_config(&Some(config_file_path))?;
+            }
+        }
+
+        Ok(())
+    }
+
+    pub fn new(
+        config_path: &Option<PathBuf>,
+        global_config_path: &Option<PathBuf>,
+    ) -> Result<Self, FormatConfigError> {
+        let mut config = FormatConfig::default();
+
+        config.get_built_in_config()?;
+
+        config.get_file_config(config_path)?;
+
+        let global_dir = match global_config_path {
+            Some(g) => g.clone(),
+            None => {
+                let app_dirs = AppDirs::new(Some("formaty"), true).unwrap();
+
+                if !app_dirs.config_dir.exists() {
+                    fs::create_dir(&app_dirs.config_dir)?;
+                }
+
+                app_dirs.config_dir
+            }
+        };
+
+        config.parse_directory(&Some(global_dir))?;
+
         Ok(config)
     }
 

src/main.rs

@@ -22,6 +22,15 @@ pub struct Args {
     )]
     config: Option<PathBuf>,
 
+    #[structopt(
+        short = "g",
+        long = "global_config",
+        env = "FORMATY_GLOBAL_CONFIG",
+        parse(from_os_str),
+        help = "Path to the global config directory"
+    )]
+    global_config: Option<PathBuf>,
+
     #[structopt(
         help = "Input data type",
         short = "i",
@@ -43,7 +52,7 @@ pub struct Args {
 fn init() -> Result<(Vec<u8>, Format), FormatyError> {
     let args: Args = Args::from_args();
 
-    let config = FormatConfig::new(&args.config)?;
+    let config = FormatConfig::new(&args.config, &args.global_config)?;
 
     let format = config.get_format(&args.format)?;