import transactions from ofx 2.x file

pkg/converters/ofx/ofx_data_reader.go

@@ -0,0 +1,50 @@
+package ofx
+
+import (
+	"bytes"
+	"encoding/xml"
+
+	"github.com/mayswind/ezbookkeeping/pkg/core"
+	"github.com/mayswind/ezbookkeeping/pkg/errs"
+	"github.com/mayswind/ezbookkeeping/pkg/utils"
+)
+
+// ofxFileReader defines the structure of open financial exchange (ofx) file reader
+type ofxFileReader struct {
+	xmlDecoder *xml.Decoder
+}
+
+// read returns the imported open financial exchange (ofx) file
+func (r *ofxFileReader) read(ctx core.Context) (*ofxFile, error) {
+	file := &ofxFile{}
+
+	err := r.xmlDecoder.Decode(&file)
+
+	if err != nil {
+		return nil, err
+	}
+
+	return file, nil
+}
+
+func createNewOFXFileReader(data []byte) (*ofxFileReader, error) {
+	if len(data) > 5 && data[0] == 0x3C && data[1] == 0x3F && data[2] == 0x78 && data[3] == 0x6D && data[4] == 0x6C { // ofx 2.x starts with <?xml
+		xmlDecoder := xml.NewDecoder(bytes.NewReader(data))
+		xmlDecoder.CharsetReader = utils.IdentReader
+
+		return &ofxFileReader{
+			xmlDecoder: xmlDecoder,
+		}, nil
+	} else if len(data) > 13 && string(data[0:13]) == "OFXHEADER:100" { // ofx 1.x starts with OFXHEADER:100
+
+	} else if len(data) > 5 && string(data[0:5]) == "<OFX>" { // no ofx header
+		xmlDecoder := xml.NewDecoder(bytes.NewReader(data))
+		xmlDecoder.CharsetReader = utils.IdentReader
+
+		return &ofxFileReader{
+			xmlDecoder: xmlDecoder,
+		}, nil
+	}
+
+	return nil, errs.ErrInvalidOFXFile
+}