Refactor and add new commands and doc comments

src/lib.rs

@@ -1,43 +1,4 @@
 mod transaction;
 pub use transaction::Transaction;
+pub mod csv;
 pub mod ynab;
-use csv::ReaderBuilder;
-use std::io::Read;
-
-enum BankFormat {
-    Bulder,
-}
-
-impl BankFormat {
-    fn from_str(format: &str) -> Result<BankFormat, String> {
-        match format {
-            "bulder" => Ok(BankFormat::Bulder),
-            _ => Err(format!("Bank '{}' not found", format)),
-        }
-    }
-
-    fn reader<R: Read>(&self, input: R) -> csv::Reader<R> {
-        match self {
-            BankFormat::Bulder => ReaderBuilder::new()
-                .has_headers(true)
-                .delimiter(b';')
-                .from_reader(input),
-        }
-    }
-
-    fn transform(&self, record: &csv::StringRecord) -> Result<Transaction, String> {
-        match self {
-            BankFormat::Bulder => Transaction::from_fields(&record[0], &record[9], &record[1]),
-        }
-    }
-}
-
-pub fn read_transactions<R: Read>(input: R, format: &str) -> Result<Vec<Transaction>, String> {
-    let format = BankFormat::from_str(format).unwrap();
-    format
-        .reader(input)
-        .records()
-        .map(|r| r.map_err(|e| format!("parse error: {}", e)))
-        .map(|r| r.and_then(|r| format.transform(&r)))
-        .collect::<Result<Vec<_>, _>>()
-}