feat[wip]: implement XLSX file type

client.go

@@ -5,6 +5,7 @@ import (
 	jsonfile "github.com/cloudquery/filetypes/v4/json"
 	"github.com/cloudquery/filetypes/v4/parquet"
 	"github.com/cloudquery/filetypes/v4/types"
+	"github.com/cloudquery/filetypes/v4/xlsx"
 )
 
 type Client struct {
@@ -17,6 +18,7 @@ var (
 	_ types.FileType = (*csvfile.Client)(nil)
 	_ types.FileType = (*jsonfile.Client)(nil)
 	_ types.FileType = (*parquet.Client)(nil)
+	_ types.FileType = (*xlsx.Client)(nil)
 )
 
 // NewClient creates a new client for the given spec
@@ -49,6 +51,9 @@ func NewClient(spec *FileSpec) (*Client, error) {
 	case FormatTypeParquet:
 		client, err = parquet.NewClient(parquet.WithSpec(*spec.parquetSpec))
 
+	case FormatTypeXLSX:
+		client, err = xlsx.NewClient()
+
 	default:
 		// shouldn't be possible as Validate checks for type
 		panic("unknown format " + spec.Format)

go.mod

@@ -11,6 +11,7 @@ require (
 	github.com/invopop/jsonschema v0.13.0
 	github.com/stretchr/testify v1.10.0
 	github.com/wk8/go-ordered-map/v2 v2.1.8
+	github.com/xuri/excelize/v2 v2.9.1
 )
 
 require (
@@ -38,11 +39,17 @@ require (
 	github.com/oapi-codegen/runtime v1.1.1 // indirect
 	github.com/pierrec/lz4/v4 v4.1.22 // indirect
 	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
+	github.com/richardlehane/mscfb v1.0.4 // indirect
+	github.com/richardlehane/msoleps v1.0.4 // indirect
 	github.com/rs/zerolog v1.34.0 // indirect
 	github.com/samber/lo v1.49.1 // indirect
 	github.com/santhosh-tekuri/jsonschema/v6 v6.0.2 // indirect
 	github.com/thoas/go-funk v0.9.3 // indirect
+	github.com/tiendc/go-deepcopy v1.6.0 // indirect
+	github.com/xuri/efp v0.0.1 // indirect
+	github.com/xuri/nfp v0.0.1 // indirect
 	github.com/zeebo/xxh3 v1.0.2 // indirect
+	golang.org/x/crypto v0.39.0 // indirect
 	golang.org/x/exp v0.0.0-20250620022241-b7579e27df2b // indirect
 	golang.org/x/mod v0.25.0 // indirect
 	golang.org/x/net v0.41.0 // indirect

go.sum

@@ -88,6 +88,11 @@ github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINE
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 h1:Jamvg5psRIccs7FGNTlIRMkT8wgtp5eCXdBlqhYGL6U=
 github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/richardlehane/mscfb v1.0.4 h1:WULscsljNPConisD5hR0+OyZjwK46Pfyr6mPu5ZawpM=
+github.com/richardlehane/mscfb v1.0.4/go.mod h1:YzVpcZg9czvAuhk9T+a3avCpcFPMUWm7gK3DypaEsUk=
+github.com/richardlehane/msoleps v1.0.1/go.mod h1:BWev5JBpU9Ko2WAgmZEuiz4/u3ZYTKbjLycmwiWUfWg=
+github.com/richardlehane/msoleps v1.0.4 h1:WuESlvhX3gH2IHcd8UqyCuFY5yiq/GR/yqaSM/9/g00=
+github.com/richardlehane/msoleps v1.0.4/go.mod h1:BWev5JBpU9Ko2WAgmZEuiz4/u3ZYTKbjLycmwiWUfWg=
 github.com/rs/xid v1.6.0/go.mod h1:7XoLgs4eV+QndskICGsho+ADou8ySMSjJKDIan90Nz0=
 github.com/rs/zerolog v1.34.0 h1:k43nTLIwcTVQAncfCw4KZ2VY6ukYoZaBPNOE8txlOeY=
 github.com/rs/zerolog v1.34.0/go.mod h1:bJsvje4Z08ROH4Nhs5iH600c3IkWhwp44iRc54W6wYQ=
@@ -107,8 +112,16 @@ github.com/stretchr/testify v1.10.0 h1:Xv5erBjTwe/5IxqUQTdXv5kgmIvbHo3QQyRwhJsOf
 github.com/stretchr/testify v1.10.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
 github.com/thoas/go-funk v0.9.3 h1:7+nAEx3kn5ZJcnDm2Bh23N2yOtweO14bi//dvRtgLpw=
 github.com/thoas/go-funk v0.9.3/go.mod h1:+IWnUfUmFO1+WVYQWQtIJHeRRdaIyyYglZN7xzUPe4Q=
+github.com/tiendc/go-deepcopy v1.6.0 h1:0UtfV/imoCwlLxVsyfUd4hNHnB3drXsfle+wzSCA5Wo=
+github.com/tiendc/go-deepcopy v1.6.0/go.mod h1:toXoeQoUqXOOS/X4sKuiAoSk6elIdqc0pN7MTgOOo2I=
 github.com/wk8/go-ordered-map/v2 v2.1.8 h1:5h/BUHu93oj4gIdvHHHGsScSTMijfx5PeYkE/fJgbpc=
 github.com/wk8/go-ordered-map/v2 v2.1.8/go.mod h1:5nJHM5DyteebpVlHnWMV0rPz6Zp7+xBAnxjb1X5vnTw=
+github.com/xuri/efp v0.0.1 h1:fws5Rv3myXyYni8uwj2qKjVaRP30PdjeYe2Y6FDsCL8=
+github.com/xuri/efp v0.0.1/go.mod h1:ybY/Jr0T0GTCnYjKqmdwxyxn2BQf2RcQIIvex5QldPI=
+github.com/xuri/excelize/v2 v2.9.1 h1:VdSGk+rraGmgLHGFaGG9/9IWu1nj4ufjJ7uwMDtj8Qw=
+github.com/xuri/excelize/v2 v2.9.1/go.mod h1:x7L6pKz2dvo9ejrRuD8Lnl98z4JLt0TGAwjhW+EiP8s=
+github.com/xuri/nfp v0.0.1 h1:MDamSGatIvp8uOmDP8FnmjuQpu90NzdJxo7242ANR9Q=
+github.com/xuri/nfp v0.0.1/go.mod h1:WwHg+CVyzlv/TX9xqBFXEZAuxOPxn2k1GNHwG41IIUQ=
 github.com/xyproto/randomstring v1.0.5 h1:YtlWPoRdgMu3NZtP45drfy1GKoojuR7hmRcnhZqKjWU=
 github.com/xyproto/randomstring v1.0.5/go.mod h1:rgmS5DeNXLivK7YprL0pY+lTuhNQW3iGxZ18UQApw/E=
 github.com/zeebo/assert v1.3.0 h1:g7C04CbJuIDKNPFHmsk4hwZDO5O+kntRxzaUoNXj+IQ=
@@ -127,8 +140,12 @@ go.opentelemetry.io/otel/sdk/metric v1.37.0 h1:90lI228XrB9jCMuSdA0673aubgRobVZFh
 go.opentelemetry.io/otel/sdk/metric v1.37.0/go.mod h1:cNen4ZWfiD37l5NhS+Keb5RXVWZWpRE+9WyVCpbo5ps=
 go.opentelemetry.io/otel/trace v1.37.0 h1:HLdcFNbRQBE2imdSEgm/kwqmQj1Or1l/7bW6mxVK7z4=
 go.opentelemetry.io/otel/trace v1.37.0/go.mod h1:TlgrlQ+PtQO5XFerSPUYG0JSgGyryXewPGyayAWSBS0=
+golang.org/x/crypto v0.39.0 h1:SHs+kF4LP+f+p14esP5jAoDpHU8Gu/v9lFRK6IT5imM=
+golang.org/x/crypto v0.39.0/go.mod h1:L+Xg3Wf6HoL4Bn4238Z6ft6KfEpN0tJGo53AAPC632U=
 golang.org/x/exp v0.0.0-20250620022241-b7579e27df2b h1:M2rDM6z3Fhozi9O7NWsxAkg/yqS/lQJ6PmkyIV3YP+o=
 golang.org/x/exp v0.0.0-20250620022241-b7579e27df2b/go.mod h1:3//PLf8L/X+8b4vuAfHzxeRUl04Adcb341+IGKfnqS8=
+golang.org/x/image v0.25.0 h1:Y6uW6rH1y5y/LK1J8BPWZtr6yZ7hrsy6hFrXjgsc2fQ=
+golang.org/x/image v0.25.0/go.mod h1:tCAmOEGthTtkalusGp1g3xa2gke8J6c2N565dTyl9Rs=
 golang.org/x/mod v0.25.0 h1:n7a+ZbQKQA/Ysbyb0/6IbB1H/X41mKgbhfv7AfG/44w=
 golang.org/x/mod v0.25.0/go.mod h1:IXM97Txy2VM4PJ3gI61r1YEk/gAj6zAHN3AdZt6S9Ww=
 golang.org/x/net v0.41.0 h1:vBTly1HeNPEn3wtREYfy4GZ/NECgw2Cnl+nK6Nz3uvw=

spec.go

@@ -9,6 +9,7 @@ import (
 	"github.com/cloudquery/filetypes/v4/csv"
 	jsonfile "github.com/cloudquery/filetypes/v4/json"
 	"github.com/cloudquery/filetypes/v4/parquet"
+	"github.com/cloudquery/filetypes/v4/xlsx"
 )
 
 type FormatType string
@@ -17,6 +18,7 @@ const (
 	FormatTypeCSV     = "csv"
 	FormatTypeJSON    = "json"
 	FormatTypeParquet = "parquet"
+	FormatTypeXLSX    = "xlsx"
 )
 
 // Compression type.
@@ -41,6 +43,7 @@ type FileSpec struct {
 	csvSpec     *csv.CSVSpec
 	jsonSpec    *jsonfile.JSONSpec
 	parquetSpec *parquet.ParquetSpec
+	xlsxSpec    *xlsx.Spec
 }
 
 func (s *FileSpec) SetDefaults() {
@@ -51,6 +54,8 @@ func (s *FileSpec) SetDefaults() {
 		s.jsonSpec.SetDefaults()
 	case FormatTypeParquet:
 		s.parquetSpec.SetDefaults()
+	case FormatTypeXLSX:
+		s.xlsxSpec.SetDefaults()
 	}
 }
 
@@ -68,10 +73,14 @@ func (s *FileSpec) Validate() error {
 		return s.jsonSpec.Validate()
 	case FormatTypeParquet:
 		if s.Compression != CompressionTypeNone {
-			return errors.New("compression is not supported for parquet format") // This won't work even if we wanted to, because parquet writer prematurely closes the file handle
+			return fmt.Errorf("compression is not supported for the %s format", s.Format)
 		}
-
 		return s.parquetSpec.Validate()
+	case FormatTypeXLSX:
+		if s.Compression != CompressionTypeNone {
+			return fmt.Errorf("compression is not supported for the %s format", s.Format)
+		}
+		return s.xlsxSpec.Validate()
 	default:
 		return fmt.Errorf("unknown format %s", s.Format)
 	}
@@ -96,6 +105,9 @@ func (s *FileSpec) UnmarshalSpec() error {
 	case FormatTypeParquet:
 		s.parquetSpec = &parquet.ParquetSpec{}
 		return dec.Decode(s.parquetSpec)
+	case FormatTypeXLSX:
+		s.xlsxSpec = &xlsx.Spec{}
+		return dec.Decode(s.xlsxSpec)
 	default:
 		return fmt.Errorf("unknown format %s", s.Format)
 	}

xlsx/client.go

@@ -0,0 +1,17 @@
+package xlsx
+
+type Options func(*Client)
+
+// Client is a csv client.
+type Client struct {
+}
+
+func NewClient(options ...Options) (*Client, error) {
+	c := &Client{}
+
+	for _, option := range options {
+		option(c)
+	}
+
+	return c, nil
+}

xlsx/read.go

@@ -0,0 +1,86 @@
+package xlsx
+
+import (
+	"bytes"
+	"fmt"
+
+	"github.com/apache/arrow-go/v18/arrow"
+	"github.com/apache/arrow-go/v18/arrow/array"
+	"github.com/apache/arrow-go/v18/arrow/memory"
+	"github.com/cloudquery/filetypes/v4/types"
+	"github.com/cloudquery/plugin-sdk/v4/schema"
+	"github.com/goccy/go-json"
+	"github.com/xuri/excelize/v2"
+)
+
+func (cl *Client) Read(r types.ReaderAtSeeker, table *schema.Table, res chan<- arrow.Record) error {
+	file, err := excelize.OpenReader(r)
+	if err != nil {
+		return fmt.Errorf("failed to open xlsx reader: %w", err)
+	}
+
+	sheetName := "data"
+	rows, err := file.GetRows(sheetName)
+	if err != nil {
+		return fmt.Errorf("failed to get rows from sheet %s: %w", sheetName, err)
+	}
+
+	for _, row := range rows {
+		rb := array.NewRecordBuilder(memory.DefaultAllocator, table.ToArrowSchema())
+		for i, field := range rb.Fields() {
+			err := appendValue(field, row[i])
+			if err != nil {
+				return fmt.Errorf("failed to read from sheet %s: %w", table.Name, err)
+			}
+		}
+		res <- rb.NewRecord()
+	}
+	return nil
+}
+
+func appendValue(builder array.Builder, value any) error {
+	if value == nil {
+		builder.AppendNull()
+		return nil
+	}
+	switch bldr := builder.(type) {
+	case array.ListLikeBuilder:
+		lst := value.([]any)
+		if lst == nil {
+			bldr.AppendNull()
+			return nil
+		}
+		bldr.Append(true)
+		valBuilder := bldr.ValueBuilder()
+		for _, v := range lst {
+			if err := appendValue(valBuilder, v); err != nil {
+				return err
+			}
+		}
+		return nil
+	case *array.StructBuilder:
+		m := value.(map[string]any)
+		bldr.Append(true)
+		bldrType := bldr.Type().(*arrow.StructType)
+		for k, v := range m {
+			idx, _ := bldrType.FieldIdx(k)
+			fieldBldr := bldr.FieldBuilder(idx)
+			if err := appendValue(fieldBldr, v); err != nil {
+				return err
+			}
+		}
+		return nil
+	case *array.MonthIntervalBuilder, *array.DayTimeIntervalBuilder, *array.MonthDayNanoIntervalBuilder:
+		b, err := json.Marshal(value)
+		if err != nil {
+			return err
+		}
+		dec := json.NewDecoder(bytes.NewReader(b))
+		return bldr.UnmarshalOne(dec)
+	case *array.Int8Builder, *array.Int16Builder, *array.Int32Builder, *array.Int64Builder:
+		return bldr.AppendValueFromString(fmt.Sprintf("%d", int64(value.(float64))))
+	case *array.Uint8Builder, *array.Uint16Builder, *array.Uint32Builder, *array.Uint64Builder:
+		return bldr.AppendValueFromString(fmt.Sprintf("%d", uint64(value.(float64))))
+	}
+	return builder.AppendValueFromString(fmt.Sprintf("%v", value))
+}

xlsx/spec.go

@@ -0,0 +1,23 @@
+package xlsx
+
+import (
+	"github.com/invopop/jsonschema"
+)
+
+type Spec struct{}
+
+func (Spec) JSONSchema() *jsonschema.Schema {
+	properties := jsonschema.NewProperties()
+	return &jsonschema.Schema{
+		Description:          "CloudQuery XLSX file output spec.",
+		Properties:           properties,
+		Type:                 "object",
+		AdditionalProperties: jsonschema.FalseSchema, // "additionalProperties": false
+	}
+}
+
+func (s *Spec) SetDefaults() {}
+
+func (s *Spec) Validate() error {
+	return nil
+}

xlsx/spec_test.go

@@ -0,0 +1,25 @@
+package xlsx
+
+import (
+	"testing"
+
+	"github.com/cloudquery/codegen/jsonschema"
+	"github.com/stretchr/testify/require"
+)
+
+func TestSpec_JSONSchema(t *testing.T) {
+	schema, err := jsonschema.Generate(Spec{})
+	require.NoError(t, err)
+
+	jsonschema.TestJSONSchema(t, string(schema), []jsonschema.TestCase{
+		{
+			Name: "empty",
+			Spec: `{}`,
+		},
+		{
+			Name: "extra keyword",
+			Err:  true,
+			Spec: `{"extra":true}`,
+		},
+	})
+}