From 390410cb44294a96b1c3b0cd20106837c162d4e2 Mon Sep 17 00:00:00 2001
From: Ramakrishnan Muthukrishnan <ram@rkrishnan.org>
Date: Sun, 8 Dec 2024 22:10:24 +0530
Subject: [PATCH] new create for manipulating properties
---
rust/Cargo.toml | 2 +-
rust/property/Cargo.toml | 6 +++++
rust/property/src/lib.rs | 57 ++++++++++++++++++++++++++++++++++++++++
3 files changed, 64 insertions(+), 1 deletion(-)
create mode 100644 rust/property/Cargo.toml
create mode 100644 rust/property/src/lib.rs
diff --git a/rust/Cargo.toml b/rust/Cargo.toml
index 0958446..1f226d4 100644
--- a/rust/Cargo.toml
+++ b/rust/Cargo.toml
@@ -1,3 +1,3 @@
[workspace]
resolver = "2"
-members = [ "discovery" ]
+members = [ "discovery" , "property"]
diff --git a/rust/property/Cargo.toml b/rust/property/Cargo.toml
new file mode 100644
index 0000000..acc446a
--- /dev/null
+++ b/rust/property/Cargo.toml
@@ -0,0 +1,6 @@
+[package]
+name = "property"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
diff --git a/rust/property/src/lib.rs b/rust/property/src/lib.rs
new file mode 100644
index 0000000..c7be823
--- /dev/null
+++ b/rust/property/src/lib.rs
@@ -0,0 +1,57 @@
+use std::{collections::HashMap, io::{Read, Write}, path::Path};
+
+struct Property {
+ props: HashMap<String, String>,
+ path: String,
+}
+
+impl Property {
+ pub fn init(path: &Path) -> Result<Self, std::io::Error> {
+ let maybe_file = std::fs::File::open(path);
+ match maybe_file {
+ Ok(mut file) => {
+ // each line is of the form prop=value
+ let mut buf = String::new();
+ let mut props = HashMap::new();
+ file.read_to_string(&mut buf).unwrap();
+ let words: Vec<&str> = buf.split('\n').collect();
+ words.iter().for_each(|w| {
+ let kvs = w.split('=').collect::<Vec<&str>>();
+ props.insert(kvs[0].to_string(), kvs[1].to_string());
+ });
+ Ok(Property{
+ props: props,
+ path: path.to_string_lossy().to_string(),
+ })
+ },
+ Err(e) => {
+ println!("file path {} does not exist", path.to_str().unwrap());
+ Err(e)
+ }
+ }
+ }
+
+ // save the table into the resource indicated by the path
+ pub fn save(&self) -> Result<(), std::io::Error>{
+ let mut file = std::fs::File::create(&self.path)?;
+
+ for (key, value) in self.props.iter() {
+ let line = format!("{}={}", key, value);
+ let _ = file.write(&line.as_bytes());
+ }
+ Ok(())
+ }
+
+ pub fn get(&self, s: &str) -> Option<&str> {
+ self.props.get(s).map(|x| x.as_str())
+ }
+
+ pub fn set(&mut self, k: &str, v: &str) {
+ self.props.insert(k.to_string(), v.to_string());
+ }
+
+ pub fn clear_all(&mut self) {
+ self.props = HashMap::new();
+ }
+}
+
--
2.45.2