Work on UAPI serialize device

1 files changed, 45 insertions, 0 deletions

diff --git a/src/configuration/uapi/mod.rs b/src/configuration/uapi/mod.rs
index 5d89b94..cba156d 100644
--- a/src/configuration/uapi/mod.rs
+++ b/src/configuration/uapi/mod.rs
@@ -1,4 +1,49 @@
 mod get;
 mod set;
 
+use std::io::{Read, Write};
+
 use super::{ConfigError, Configuration};
+
+const MAX_LINE_LENGTH: usize = 128;
+
+struct Parser<C: Configuration, R: Read, W: Write> {
+    config: C,
+    reader: R,
+    writer: W,
+}
+
+impl<C: Configuration, R: Read, W: Write> Parser<C, R, W> {
+    fn new(&self, reader: R, writer: W, config: C) -> Parser<C, R, W> {
+        Parser {
+            config,
+            reader,
+            writer,
+        }
+    }
+
+    fn parse(&mut self) -> Option<()> {
+        // read string up to maximum length (why is this not in std?)
+        let mut line = || {
+            let mut m: [u8; 1] = [0u8];
+            let mut l: String = String::with_capacity(MAX_LINE_LENGTH);
+            while let Ok(_) = self.reader.read_exact(&mut m) {
+                let c = m[0] as char;
+                if c == '\n' {
+                    return Some(l);
+                };
+                l.push(c);
+                if l.len() > MAX_LINE_LENGTH {
+                    break;
+                }
+            }
+            None
+        };
+
+        match line()?.as_str() {
+            "get=1" => Some(()),
+            "set=1" => Some(()),
+            _ => None,
+        }
+    }
+}