Add CSV parser

Cargo.toml

@@ -20,6 +20,7 @@ eframe = "0.27.2"
 egui_extras = "0.27.2"
 fern = "0.6.2"
 log = "0.4.21"
+csv = "1.3.0"
 
 [[bin]]
 name = "mlv"

src/main.rs

@@ -80,7 +80,9 @@ pub fn main() {
 
             // Parse the line
             let parsed_line = args.parser.parse_line(&line);
-            parsed_file.add_line(parsed_line);
+            if let Some(parsed_line) = parsed_line {
+                parsed_file.add_line(parsed_line);
+            }
         }
         log::debug!("File closed");
     });

src/parse/builtin/csv.rs

@@ -0,0 +1,28 @@
+use eframe::egui::RichText;
+
+use crate::parse::ParsedLine;
+
+pub fn parse_line(line: &str) -> Option<ParsedLine> {
+   // Read the line
+   let mut reader = csv::ReaderBuilder::new()
+       .has_headers(false)
+       .comment(Some(b'#'))
+       .trim(csv::Trim::All)
+       .from_reader(line.as_bytes());
+
+    // Parse the line
+    let mut cells = Vec::new();
+    for result in reader.records() {
+        let record = result.unwrap();
+        for field in record.iter() {
+            cells.push(RichText::new(field.to_string()));
+        }
+    }
+
+    // If there are no cells, return None
+    if cells.is_empty() || cells.iter().all(|c| c.text().is_empty()) {
+        return None;
+    }
+
+    Some(ParsedLine::new(cells))
+}

src/parse/builtin/mod.rs

@@ -1 +1,2 @@
-pub mod spaces;
+pub mod spaces;
+pub mod csv;

src/parse/builtin/spaces.rs

@@ -2,10 +2,10 @@ use eframe::egui::RichText;
 
 use crate::parse::ParsedLine;
 
-pub fn parse_line(line: &str) -> ParsedLine {
-    ParsedLine::new(
+pub fn parse_line(line: &str) -> Option<ParsedLine> {
+    Some(ParsedLine::new(
         line.split_whitespace()
             .map(|s| RichText::new(s.to_string()))
             .collect(),
-    )
+    ))
 }

src/parse/mod.rs

@@ -8,13 +8,16 @@ use eframe::egui::{Label, RichText};
 pub enum FileParsers {
     /// Space-separated values
     Spaces,
+    /// Comma-separated values
+    Csv,
 }
 
 impl FileParsers {
     /// Parse a line using the selected parser
-    pub fn parse_line(&self, line: &str) -> ParsedLine {
+    pub fn parse_line(&self, line: &str) -> Option<ParsedLine> {
         match self {
             FileParsers::Spaces => builtin::spaces::parse_line(line),
+            FileParsers::Csv => builtin::csv::parse_line(line),
         }
     }
 }