This closes #1835, support get data validations which storage in the extension lists (#1834)

cell_test.go

@@ -91,7 +91,7 @@ func TestConcurrency(t *testing.T) {
 			// Concurrency add data validation
 			dv := NewDataValidation(true)
 			dv.Sqref = fmt.Sprintf("A%d:B%d", val, val)
-			dv.SetRange(10, 20, DataValidationTypeWhole, DataValidationOperatorGreaterThan)
+			assert.NoError(t, dv.SetRange(10, 20, DataValidationTypeWhole, DataValidationOperatorGreaterThan))
 			dv.SetInput(fmt.Sprintf("title:%d", val), strconv.Itoa(val))
 			assert.NoError(t, f.AddDataValidation("Sheet1", dv))
 			// Concurrency delete data validation with reference sequence

datavalidation.go

@@ -13,6 +13,7 @@ package excelize
 
 import (
 	"fmt"
+	"io"
 	"math"
 	"strings"
 	"unicode/utf16"
@@ -293,12 +294,42 @@ func (f *File) GetDataValidations(sheet string) ([]*DataValidation, error) {
 	if err != nil {
 		return nil, err
 	}
-	if ws.DataValidations == nil || len(ws.DataValidations.DataValidation) == 0 {
-		return nil, err
+	var (
+		dataValidations       []*DataValidation
+		decodeExtLst          = new(decodeExtLst)
+		decodeDataValidations *xlsxDataValidations
+		ext                   *xlsxExt
+	)
+	if ws.DataValidations != nil {
+		dataValidations = append(dataValidations, getDataValidations(ws.DataValidations)...)
+	}
+	if ws.ExtLst != nil {
+		if err = f.xmlNewDecoder(strings.NewReader("<extLst>" + ws.ExtLst.Ext + "</extLst>")).
+			Decode(decodeExtLst); err != nil && err != io.EOF {
+			return dataValidations, err
+		}
+		for _, ext = range decodeExtLst.Ext {
+			if ext.URI == ExtURIDataValidations {
+				decodeDataValidations = new(xlsxDataValidations)
+				_ = f.xmlNewDecoder(strings.NewReader(ext.Content)).Decode(decodeDataValidations)
+				dataValidations = append(dataValidations, getDataValidations(decodeDataValidations)...)
+			}
+		}
+	}
+	return dataValidations, err
+}
+
+// getDataValidations returns data validations list by given worksheet data
+// validations.
+func getDataValidations(dvs *xlsxDataValidations) []*DataValidation {
+	if dvs == nil {
+		return nil
+	}
+	var dataValidations []*DataValidation
+	for _, dv := range dvs.DataValidation {
+		if dv == nil {
+			continue
 		}
-	var dvs []*DataValidation
-	for _, dv := range ws.DataValidations.DataValidation {
-		if dv != nil {
 		dataValidation := &DataValidation{
 			AllowBlank:       dv.AllowBlank,
 			Error:            dv.Error,
@@ -319,10 +350,14 @@ func (f *File) GetDataValidations(sheet string) ([]*DataValidation, error) {
 		if dv.Formula2 != nil {
 			dataValidation.Formula2 = unescapeDataValidationFormula(dv.Formula2.Content)
 		}
-			dvs = append(dvs, dataValidation)
+		if dv.XMSqref != "" {
+			dataValidation.Sqref = dv.XMSqref
+			dataValidation.Formula1 = strings.TrimSuffix(strings.TrimPrefix(dataValidation.Formula1, "<xm:f>"), "</xm:f>")
+			dataValidation.Formula2 = strings.TrimSuffix(strings.TrimPrefix(dataValidation.Formula2, "<xm:f>"), "</xm:f>")
 		}
+		dataValidations = append(dataValidations, dataValidation)
 	}
-	return dvs, err
+	return dataValidations
 }
 
 // DeleteDataValidation delete data validation by given worksheet name and

datavalidation_test.go

@@ -12,6 +12,7 @@
 package excelize
 
 import (
+	"fmt"
 	"math"
 	"path/filepath"
 	"strings"
@@ -104,6 +105,31 @@ func TestDataValidation(t *testing.T) {
 	dataValidations, err = f.GetDataValidations("Sheet1")
 	assert.NoError(t, err)
 	assert.Equal(t, []*DataValidation(nil), dataValidations)
+
+	// Test get data validations which storage in the extension lists
+	f = NewFile()
+	ws, ok := f.Sheet.Load("xl/worksheets/sheet1.xml")
+	assert.True(t, ok)
+	ws.(*xlsxWorksheet).ExtLst = &xlsxExtLst{Ext: fmt.Sprintf(`<ext uri="%s" xmlns:x14="%s"><x14:dataValidations><x14:dataValidation type="list" allowBlank="1"><x14:formula1><xm:f>Sheet1!$B$1:$B$5</xm:f></x14:formula1><xm:sqref>A7:B8</xm:sqref></x14:dataValidation></x14:dataValidations></ext>`, ExtURIDataValidations, NameSpaceSpreadSheetX14.Value)}
+	dataValidations, err = f.GetDataValidations("Sheet1")
+	assert.NoError(t, err)
+	assert.Equal(t, []*DataValidation{
+		{
+			AllowBlank: true,
+			Type:       "list",
+			Formula1:   "Sheet1!$B$1:$B$5",
+			Sqref:      "A7:B8",
+		},
+	}, dataValidations)
+
+	// Test get data validations with invalid extension list characters
+	ws.(*xlsxWorksheet).ExtLst = &xlsxExtLst{Ext: fmt.Sprintf(`<ext uri="%s" xmlns:x14="%s"><x14:dataValidations></x14:dataValidation></x14:dataValidations></ext>`, ExtURIDataValidations, NameSpaceSpreadSheetX14.Value)}
+	_, err = f.GetDataValidations("Sheet1")
+	assert.EqualError(t, err, "XML syntax error on line 1: element <dataValidations> closed by </dataValidation>")
+
+	// Test get validations without validations
+	assert.Nil(t, getDataValidations(nil))
+	assert.Nil(t, getDataValidations(&xlsxDataValidations{DataValidation: []*xlsxDataValidation{nil}}))
 }
 
 func TestDataValidationError(t *testing.T) {

templates.go

@@ -103,7 +103,7 @@ const (
 	ExtURIConditionalFormattingRuleID    = "{B025F937-C7B1-47D3-B67F-A62EFF666E3E}"
 	ExtURIConditionalFormattings         = "{78C0D931-6437-407d-A8EE-F0AAD7539E65}"
 	ExtURIDataModel                      = "{FCE2AD5D-F65C-4FA6-A056-5C36A1767C68}"
-	ExtURIDataValidations                = "{CCE6A557-97BC-4B89-ADB6-D9C93CAAB3DF}"
+	ExtURIDataValidations                = "{CCE6A557-97BC-4b89-ADB6-D9C93CAAB3DF}"
 	ExtURIDrawingBlip                    = "{28A0092B-C50C-407E-A947-70E740481C1C}"
 	ExtURIExternalLinkPr                 = "{FCE6A71B-6B00-49CD-AB44-F6B1AE7CDE65}"
 	ExtURIIgnoredErrors                  = "{01252117-D84E-4E92-8308-4BE1C098FCBB}"

xmlWorksheet.go

@@ -441,6 +441,7 @@ type xlsxDataValidation struct {
 	ShowErrorMessage bool          `xml:"showErrorMessage,attr,omitempty"`
 	ShowInputMessage bool          `xml:"showInputMessage,attr,omitempty"`
 	Sqref            string        `xml:"sqref,attr"`
+	XMSqref          string        `xml:"sqref,omitempty"`
 	Type             string        `xml:"type,attr,omitempty"`
 	Formula1         *xlsxInnerXML `xml:"formula1"`
 	Formula2         *xlsxInnerXML `xml:"formula2"`