support reading logs from csv files

src/logfile/mod.rs

@@ -4,12 +4,13 @@ pub mod logline;
 use crate::error::ReadError;
 use crate::logfile::archive::{Archive, ArchiveEntry, SevenZipArchive, TarArchive, ZipArchive};
 use bzip2_rs::DecoderReader;
+use csv::Reader;
 use dialoguer::Select;
 use flate2::read::GzDecoder;
 pub use logline::{LineNumber, LogLine};
 use ruzstd::decoding::StreamingDecoder;
 use serde::Deserialize;
-use std::io::{Cursor, Read, Seek};
+use std::io::{BufReader, Cursor, Read, Seek};
 use xz2::read::XzDecoder;
 
 #[derive(Debug, Deserialize, Default, Copy, Clone, Ord, PartialOrd, Eq, PartialEq)]
@@ -55,7 +56,21 @@ impl LogFile {
             return Self::open_no_seek(path, decoder);
         }
 
-        Self::open_no_seek(path, Box::new(file))
+        if path.ends_with(".csv") {
+            let mut reader = Reader::from_reader(BufReader::new(file));
+            let mut content = String::with_capacity(8192);
+            for result in reader.records().filter_map(Result::ok) {
+                for field in result.iter() {
+                    if field.starts_with('{') && field.ends_with('}') && field.contains("reqId") {
+                        content.push_str(field);
+                        content.push('\n');
+                    }
+                }
+            }
+            Ok(LogFile { content })
+        } else {
+            Self::open_no_seek(path, Box::new(file))
+        }
     }
 
     fn open_no_seek<R: Read>(path: &str, mut file: R) -> Result<LogFile, ReadError> {