コード例 #1
0
ファイル: TestDetectAsOOXML.cs プロジェクト: Reinakumiko/npoi
        public void TestDetectAsPOIFS()
        {
            Stream in1;

            // ooxml file is
            in1 = new PushbackStream(
                    HSSFTestDataSamples.OpenSampleFileStream("SampleSS.xlsx")
            );
            Assert.IsTrue(POIXMLDocument.HasOOXMLHeader(in1));
            in1.Close();

            // xls file isn't
            in1 = new PushbackStream(
                    HSSFTestDataSamples.OpenSampleFileStream("SampleSS.xls")
            );
            Assert.IsFalse(POIXMLDocument.HasOOXMLHeader(in1));
            in1.Close();

            // text file isn't
            in1 = new PushbackStream(
                    HSSFTestDataSamples.OpenSampleFileStream("SampleSS.txt")
            );
            Assert.IsFalse(POIXMLDocument.HasOOXMLHeader(in1));
            in1.Close();
        }
コード例 #2
0
ファイル: HWPFDocumentCore.cs プロジェクト: xoposhiy/npoi
        /**
         * Takens an InputStream, verifies that it's not RTF, builds a
         *  POIFSFileSystem from it, and returns that.
         */
        public static POIFSFileSystem VerifyAndBuildPOIFS(Stream istream)
        {
            // Open a PushbackInputStream, so we can peek at the first few bytes
            PushbackStream pis = new PushbackStream(istream);
            byte[] first6 = new byte[6];
            pis.Read(first6, 0, 6);

            // Does it start with {\rtf ? If so, it's really RTF
            if (first6[0] == '{' && first6[1] == '\\' && first6[2] == 'r'
                && first6[3] == 't' && first6[4] == 'f')
            {
                throw new ArgumentException("The document is really a RTF file");
            }

            // OK, so it's not RTF
            // Open a POIFSFileSystem on the (pushed back) stream
            pis.Unread(6);
            return new POIFSFileSystem(istream);
        }
コード例 #3
0
ファイル: WorkbookFactory.cs プロジェクト: xoposhiy/npoi
 /// <summary>
 /// Creates the appropriate HSSFWorkbook / XSSFWorkbook from
 /// the given InputStream. The Stream is wraped inside a PushbackInputStream.
 /// </summary>
 /// <param name="inputStream">Input Stream of .xls or .xlsx file</param>
 /// <returns>IWorkbook depending on the input HSSFWorkbook or XSSFWorkbook is returned.</returns>
 // Your input stream MUST either support mark/reset, or
 //  be wrapped as a {@link PushbackInputStream}!
 public static IWorkbook Create(Stream inputStream)
 {
     // If Clearly doesn't do mark/reset, wrap up
     //if (!inp.MarkSupported())
     //{
     //    inp = new PushbackInputStream(inp, 8);
     //}
     inputStream = new PushbackStream(inputStream);
     if (POIFSFileSystem.HasPOIFSHeader(inputStream))
     {
         return new HSSFWorkbook(inputStream);
     }
     inputStream.Position = 0;
     if (POIXMLDocument.HasOOXMLHeader(inputStream))
     {
         return new XSSFWorkbook(OPCPackage.Open(inputStream));
     }
     throw new ArgumentException("Your InputStream was neither an OLE2 stream, nor an OOXML stream.");
 }