parser : prise en compte des simple quotes

src/parser.rs

@@ -1,8 +1,52 @@
 use crate::command::command_builder::CommandBuilder;
 use crate::command::command_sequence::CommandSequence;
 
+fn parse_quote(characters: &mut Vec<char>) -> Result<String, UnmatchedQuoteError> {
+    if characters.is_empty() {
+        Err(UnmatchedQuoteError)
+    } else {
+        let mut quoted_arg = String::default();
+        let mut current_char = characters.pop().unwrap();
+
+        while !characters.is_empty() && current_char != '\'' {
+            quoted_arg.push(current_char);
+            current_char = characters.pop().unwrap();
+        }
+
+        Ok(quoted_arg)
+    }
+}
+
+fn build_argv(characters: &mut Vec<char>, current_arg: &mut String) -> Vec<String> {
+    if characters.is_empty() {
+        vec![]
+    } else {
+        let current_char = characters.pop().unwrap();
+
+        if current_char.is_whitespace() {
+            if !current_arg.is_empty() {
+                let mut argv: Vec<String> = vec![current_arg.clone()];
+                argv.append(&mut build_argv(characters, &mut String::from("")));
+
+                argv
+            } else {
+                build_argv(characters, current_arg)
+            }
+        } else if current_char == '\'' {
+            let mut argv = vec![parse_quote(characters).unwrap()];
+            argv.append(&mut build_argv(characters, &mut String::default()));
+
+            argv
+        } else {
+            current_arg.push(current_char);
+            build_argv(characters, current_arg)
+        }
+    }
+}
+
 pub fn parse_command_line(line: String) -> Option<CommandSequence> {
-    let argv: Vec<String> = line.split_whitespace().map(|s| s.to_string()).collect();
+    let mut characters: Vec<char> = line.chars().rev().collect();
+    let argv = build_argv(&mut characters, &mut String::default());
 
     if !argv.is_empty() {
         let command = CommandBuilder::new(argv).build();
@@ -11,3 +55,6 @@ pub fn parse_command_line(line: String) -> Option<CommandSequence> {
         None
     }
 }
+
+#[derive(Debug)]
+struct UnmatchedQuoteError;