fix(table): ignore BOM

closes #520

Signed-off-by: Carlos Alexandro Becker <caarlos0@users.noreply.github.com>

go.mod

@@ -17,6 +17,7 @@ require (
 	github.com/muesli/roff v0.1.0
 	github.com/muesli/termenv v0.15.3-0.20240618155329-98d742f6907a
 	github.com/sahilm/fuzzy v0.1.1
+	golang.org/x/text v0.18.0
 )
 
 require (
@@ -45,5 +46,4 @@ require (
 	golang.org/x/sync v0.10.0 // indirect
 	golang.org/x/sys v0.28.0 // indirect
 	golang.org/x/term v0.22.0 // indirect
-	golang.org/x/text v0.18.0 // indirect
 )

table/bom.csv

@@ -0,0 +1,4 @@
+"first_name","last_name","username"
+"Rob","Pike",rob
+Ken,Thompson,ken
+"Robert","Griesemer","gri"

table/command.go

@@ -3,6 +3,7 @@ package table
 import (
 	"encoding/csv"
 	"fmt"
+	"io"
 	"os"
 
 	"github.com/charmbracelet/bubbles/table"
@@ -12,24 +13,30 @@ import (
 	"github.com/charmbracelet/gum/style"
 	"github.com/charmbracelet/lipgloss"
 	ltable "github.com/charmbracelet/lipgloss/table"
+	"golang.org/x/text/encoding"
+	"golang.org/x/text/encoding/unicode"
+	"golang.org/x/text/transform"
 )
 
 // Run provides a shell script interface for rendering tabular data (CSV).
 func (o Options) Run() error {
-	var reader *csv.Reader
+	var in io.Reader
 	if o.File != "" {
 		file, err := os.Open(o.File)
 		if err != nil {
 			return fmt.Errorf("could not find file at path %s", o.File)
 		}
-		reader = csv.NewReader(file)
+		defer file.Close()
+		in = file
 	} else {
 		if stdin.IsEmpty() {
 			return fmt.Errorf("no data provided")
 		}
-		reader = csv.NewReader(os.Stdin)
+		in = os.Stdin
 	}
 
+	transformer := unicode.BOMOverride(encoding.Nop.NewDecoder())
+	reader := csv.NewReader(transform.NewReader(in, transformer))
 	separatorRunes := []rune(o.Separator)
 	if len(separatorRunes) != 1 {
 		return fmt.Errorf("separator must be single character")