Add to_hashmap().

Cargo.toml

@@ -0,0 +1,20 @@
+[package]
+name = "quake_infostring"
+description = "Parse QuakeWorld info strings."
+categories = ["parsing"]
+keywords = ["quake", "quakeworld"]
+repository = "https://github.com/vikpe/quake_infostring"
+authors = ["Viktor Persson <viktor.persson@arcsin.se>"]
+version = "0.1.0"
+edition = "2021"
+license = "MIT"
+include = [
+    "/Cargo.toml",
+    "/README.md",
+    "/benches/**",
+    "/src/**",
+]
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+[dev-dependencies]
+pretty_assertions = "1.4.0"

src/lib.rs

@@ -0,0 +1,49 @@
+use std::collections::HashMap;
+
+mod util;
+
+pub const DELIMITER: char = '\\';
+
+pub fn to_hashmap(serverinfo: &str) -> HashMap<String, String> {
+    let serverinfo_ = util::clean(serverinfo);
+    let mut iter = serverinfo_
+        .trim_matches(DELIMITER)
+        .split(DELIMITER)
+        .map(|v| v.to_string());
+    let mut result = HashMap::new();
+
+    while let Some(key) = iter.next() {
+        if let Some(value) = iter.next() {
+            result.insert(key, value);
+        }
+    }
+
+    result
+}
+
+#[cfg(test)]
+mod tests {
+    use pretty_assertions::assert_eq;
+
+    use super::*;
+
+    #[test]
+    fn test_to_hashmap() {
+        // unbalanced string
+        {
+            let result = to_hashmap(r#"\maxfps\77"#);
+            assert_eq!(result.get("maxfps"), Some(&"77".to_string()));
+            assert_eq!(result.get("matchtag"), None);
+        }
+
+        // valid string
+        {
+            let result = to_hashmap(r#"\maxfps\77\matchtag\kombat\epoch\123456"#);
+            assert_eq!(result.get("maxfps"), Some(&"77".to_string()));
+            assert_eq!(result.get("matchtag"), Some(&"kombat".to_string()));
+            assert_eq!(result.get("epoch"), Some(&"123456".to_string()));
+
+            assert_eq!(result.get("MISSING_KEY"), None);
+        }
+    }
+}

src/util.rs

@@ -0,0 +1,27 @@
+use crate::DELIMITER;
+
+pub fn clean(serverinfo: &str) -> String {
+    serverinfo
+        .trim()
+        .trim_end_matches(r#"\n"#)
+        .replace(r#"\\"#, &DELIMITER.to_string())
+        .replace('"', "")
+        .trim_end_matches(DELIMITER)
+        .to_string()
+}
+
+
+#[cfg(test)]
+mod tests {
+    use pretty_assertions::assert_eq;
+
+    use super::*;
+
+    #[test]
+    fn test_clean() {
+        assert_eq!(clean(r#"\\maxfps\\77"#), r#"\maxfps\77"#); // double slashes
+        assert_eq!(clean(r#"\maxfps\77\"#), r#"\maxfps\77"#); // trailing slash
+        assert_eq!(clean(r#" \needpass\1\\\n "#), r#"\needpass\1"#); // whitespace
+        assert_eq!(clean(r#"\max"fps\77""#), r#"\maxfps\77"#); // quotes
+    }
+}