feat: initialize a utils lib with config functions handling config files in local and standard OS directories

crates/sesam-vitale/.env.linux.example

@@ -1,2 +0,0 @@
-SESAM_FSV_VERSION=1.40.13
-SESAM_INI_PATH=/etc/opt/santesocial/fsv/${SESAM_FSV_VERSION}/conf/sesam.ini

crates/sesam-vitale/.env.win.example

@@ -1,2 +0,0 @@
-SESAM_FSV_VERSION=1.40.13
-SESAM_INI_PATH=${ALLUSERSPROFILE}\\santesocial\\fsv\\${SESAM_FSV_VERSION}\\conf\\sesam.ini

crates/sesam-vitale/Cargo.toml

@@ -4,8 +4,8 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
-dotenv = "0.15"
 libc = "0.2"
+utils = { path = "../utils" }
 
 [build-dependencies]
 dotenv = "0.15"

crates/sesam-vitale/src/ssvlib_demo.rs

@@ -1,15 +1,15 @@
 /// High level API for the SSV library,
 /// based on the low level bindings in libssv.rs.
-extern crate dotenv;
 use libc::{c_void, size_t};
 use std::env;
 use std::ffi::CString;
-use std::path::PathBuf;
 use std::ptr;
 
 use crate::cps::lire_carte;
 use crate::libssv::{SSV_InitLIB2, SSV_LireConfig};
 
+use ::utils::config::load_config;
+
 fn ssv_init_lib_2() {
     let ini_str = env::var("SESAM_INI_PATH").expect("SESAM_INI_PATH must be set");
     let ini = CString::new(ini_str).expect("CString::new failed");
@@ -41,12 +41,11 @@ fn ssv_lire_config() {
 pub fn demo() {
     // TODO : this is probably not working on release, because I'm not sure it exists a CARGO_MANIFEST_DIR and so it can find the `.env`
     // Maybe we could use a system standard config path to store a config file
-    let manifest_dir = env::var("CARGO_MANIFEST_DIR").unwrap();
-    let manifest_path = PathBuf::from(manifest_dir);
-    dotenv::from_path(manifest_path.join(".env")).ok();
 
     println!("------- Demo for the SSV library --------");
 
+    load_config().unwrap();
+
     ssv_init_lib_2();
 
     let code_pin = "1234";