Merge pull request #41 from brunoargolo/feature/support-1904-date-format

feature/support-1904-date-format

Author: DaSpawn

lib/workbook.js

@@ -45,7 +45,8 @@ function XlsxStreamReaderWorkBook (options) {
     workBookInfo: {
       value: {
         sheetRelationships: {},
-        sheetRelationshipsNames: {}
+        sheetRelationshipsNames: {},
+        date1904: false
       },
       writable: true,
       enumerable: false
@@ -344,6 +345,8 @@ XlsxStreamReaderWorkBook.prototype._parseWorkBookInfo = function (nodeData) {
   nodeData.forEach(function (data) {
     if (data.name === 'sheet') {
       self.workBookInfo.sheetRelationshipsNames[data.attributes['r:id']] = data.attributes.name
+    } else if (data.name === 'workbookPr' && data.attributes && data.attributes.date1904 === '1') {
+      self.workBookInfo.date1904 = true
     }
   })
 }

lib/worksheet.js

@@ -248,17 +248,18 @@ XlsxStreamReaderWorkSheet.prototype._handleWorkSheetNode = function (nodeData) {
           if (self.options.formatting && workingVal) {
             if (self.workBook.hasFormatCodes) {
               var formatId = workingCell.attributes.s ? self.workBook.xfs[workingCell.attributes.s].attributes.numFmtId : 0
+              var date1904 = self.workBook.workBookInfo.date1904
               if (typeof formatId !== 'undefined') {
                 var format = self.workBook.formatCodes[formatId]
                 if (typeof format === 'undefined') {
                   try {
-                    workingVal = ssf.format(Number(formatId), Number(workingVal))
+                    workingVal = ssf.format(Number(formatId), Number(workingVal), { date1904 })
                   } catch (e) {
                     workingVal = ''
                   }
                 } else if (format !== 'General') {
                   try {
-                    workingVal = ssf.format(format, Number(workingVal))
+                    workingVal = ssf.format(format, Number(workingVal), { date1904 })
                   } catch (e) {
                     workingVal = ''
                   }

test/date1904.xlsx

@@ -49,6 +49,21 @@ describe('The xslx stream parser', function () {
       workSheetReader.process()
     })
   })
+  it('supports date formate 1904', function (done) {
+    var workBookReader = new XlsxStreamReader()
+    fs.createReadStream(path.join(__dirname, 'date1904.xlsx')).pipe(workBookReader)
+    const rows = []
+    workBookReader.on('worksheet', function (workSheetReader) {
+      workSheetReader.on('end', function () {
+        assert(rows[1][2] === '27/09/1986')
+        done()
+      })
+      workSheetReader.on('row', function (r) {
+        rows.push(r.values)
+      })
+      workSheetReader.process()
+    })
+  })
   it('catches zip format errors', function (done) {
     var workBookReader = new XlsxStreamReader()
     fs.createReadStream(path.join(__dirname, 'notanxlsx')).pipe(workBookReader)