383 lines
11 KiB
C++
383 lines
11 KiB
C++
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/****************************************************************************
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Copyright (c) 2008, Radon Labs GmbH
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Copyright (c) 2011-2013,WebJet Business Division,CYOU
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http://www.genesis-3d.com.cn
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#include "stdneb.h"
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#include "io/excelxmlreader.h"
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namespace IO
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{
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__ImplementClass(IO::ExcelXmlReader, 'EXRD', IO::StreamReader);
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using namespace Util;
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//------------------------------------------------------------------------------
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/**
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*/
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ExcelXmlReader::ExcelXmlReader()
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{
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// empty
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}
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//------------------------------------------------------------------------------
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/**
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*/
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ExcelXmlReader::~ExcelXmlReader()
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{
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if (this->IsOpen())
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{
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this->Close();
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}
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}
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//------------------------------------------------------------------------------
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/**
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Open the Excel-XML-stream and completely parse its content.
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*/
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bool
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ExcelXmlReader::Open()
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{
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n_assert(this->tableNames.Size() == 0);
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n_assert(this->tables.Size() == 0);
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if (StreamReader::Open())
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{
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// parse the Excel XML stream
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if (this->ParseExcelXmlStream())
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{
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// since the Excel file is now loaded, we can close the original stream
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if (!this->streamWasOpen)
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{
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this->stream->Close();
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}
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// all ok
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return true;
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}
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}
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return false;
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}
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//------------------------------------------------------------------------------
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/**
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*/
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void
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ExcelXmlReader::Close()
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{
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this->tableNames.Clear();
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this->tables.Clear();
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StreamReader::Close();
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}
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//------------------------------------------------------------------------------
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/**
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This loads the Excel-XML file into a TinyXML document and reads the
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content into 2D string tables.
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*/
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bool
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ExcelXmlReader::ParseExcelXmlStream()
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{
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bool success = false;
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// setup an XML stream reader
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GPtr<XmlReader> xmlReader = XmlReader::Create();
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xmlReader->SetStream(this->stream);
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if (xmlReader->Open())
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{
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if (this->ParseTables(xmlReader))
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{
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success = true;
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}
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xmlReader->Close();
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}
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else
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{
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n_error("ExcelXmlReader::ParseExcelXmlStream(): failed to load '%s'!", this->stream->GetURI().AsString().AsCharPtr());
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success = false;
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}
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return success;
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}
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//------------------------------------------------------------------------------
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/**
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Setup the table data from a loaded Excel XML file.
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*/
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bool
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ExcelXmlReader::ParseTables(const GPtr<XmlReader>& xmlReader)
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{
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n_assert(this->tables.Size() == 0);
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n_assert(this->tableNames.Size() == 0);
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// make sure it's actually an Excel XML file
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if (!xmlReader->HasNode("/Workbook"))
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{
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n_error("ExcelXmlReader: '%s' is not an Excel XML file!", this->stream->GetURI().AsString().AsCharPtr());
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return false;
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}
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xmlReader->SetToNode("/Workbook");
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// pre-define a few string objects for the following loop
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String worksheetString("Worksheet");
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String nameAttrString("ss:Name");
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String tableString("Table");
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String rowString("Row");
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String cellString("Cell");
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String dataString("Data");
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String cellDataString("Cell/Data");
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String contentString;
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// count number of tables in the file
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SizeT numTables = 0;
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if (xmlReader->SetToFirstChild(worksheetString)) do
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{
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numTables++;
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}
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while (xmlReader->SetToNextChild(worksheetString));
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n_assert(numTables > 0);
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this->tableNames.Reserve(numTables);
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this->tables.Reserve(numTables);
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// for each table...
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IndexT curTableIndex = 0;
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if (xmlReader->SetToFirstChild(worksheetString)) do
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{
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// get name of current work sheet
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String tableName = xmlReader->GetString(nameAttrString.AsCharPtr());
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this->tableNames.Append(tableName);
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n_assert((this->tableNames.Size() - 1) == curTableIndex);
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xmlReader->SetToFirstChild(tableString);
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// count the number of valid rows and columns and valid columns, we cannot
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// simply use the expendedRowCount and expandedColumnCount
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// attributes because they include table cells without any data
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IndexT numColumns = 0;
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IndexT numRows = 0;
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if (xmlReader->SetToFirstChild(rowString))do
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{
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// first row? if yes detect column count,
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// a column is only valid if it has data in the first row
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if (0 == numRows)
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{
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n_assert(0 == numColumns);
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if (xmlReader->SetToFirstChild(cellString)) do
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{
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if (xmlReader->HasNode(dataString))
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{
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numColumns++;
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}
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else
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{
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// stop at the first column which doesn't have data in the first row
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xmlReader->SetToParent();
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break;
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}
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}
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while (xmlReader->SetToNextChild(cellString));
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}
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// increment row count, a row is only valid if it has
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// valid data in the first column
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if (xmlReader->HasNode(cellDataString))
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{
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numRows++;
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}
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else
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{
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// stop at the first row which doesn't have data in the first column
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xmlReader->SetToParent();
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break;
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}
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}
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while (xmlReader->SetToNextChild(rowString));
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// setup 2D string table with row and column count and read actual data
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if ((numRows > 0) && (numColumns > 0))
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{
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FixedTable<String> newTable;
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this->tables.Append(newTable);
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n_assert((this->tables.Size() - 1) == curTableIndex);
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this->tables[curTableIndex].SetSize(numColumns, numRows);
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// read the actual table data
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IndexT curRowIndex = 0;
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if (xmlReader->SetToFirstChild(rowString))do
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{
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IndexT curColumnIndex = 0;
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if (xmlReader->SetToFirstChild(cellString)) do
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{
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// check if cells are skipped
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if (xmlReader->HasAttr("ss:Index"))
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{
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// jump to column
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curColumnIndex = xmlReader->GetInt("ss:Index")-1;
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}
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// leave early if we are past the column count
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if (curColumnIndex >= numColumns)
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{
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xmlReader->SetToParent();
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break;
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}
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// check if data node exists
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if (xmlReader->HasNode(dataString))
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{
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xmlReader->SetToNode(dataString);
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if (xmlReader->HasContent())
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{
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this->tables[curTableIndex].Set(curColumnIndex, curRowIndex, xmlReader->GetContent());
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}
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xmlReader->SetToParent();
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}
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// if no data note exists, fill with empty string
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else
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{
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this->tables[curTableIndex].Set(curColumnIndex, curRowIndex, "");
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}
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curColumnIndex++;
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}
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while (xmlReader->SetToNextChild(cellString));
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curRowIndex++;
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if (curRowIndex == numRows)
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{
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xmlReader->SetToParent();
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break;
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}
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}
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while (xmlReader->SetToNextChild(rowString));
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}
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xmlReader->SetToParent(); // of "Table"
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curTableIndex++;
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}
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while (xmlReader->SetToNextChild(worksheetString));
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return true;
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}
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//------------------------------------------------------------------------------
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/**
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*/
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SizeT
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ExcelXmlReader::GetNumTables() const
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{
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n_assert(this->IsOpen());
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return this->tables.Size();
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}
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//------------------------------------------------------------------------------
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/**
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*/
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const String&
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ExcelXmlReader::GetTableName(IndexT tableIndex) const
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{
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n_assert(this->IsOpen());
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return this->tableNames[tableIndex];
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}
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//------------------------------------------------------------------------------
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/**
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*/
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SizeT
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ExcelXmlReader::GetNumRows(IndexT tableIndex) const
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{
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n_assert(this->IsOpen());
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return this->tables[tableIndex].Height();
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}
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//------------------------------------------------------------------------------
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/**
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*/
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SizeT
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ExcelXmlReader::GetNumColumns(IndexT tableIndex) const
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{
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n_assert(this->IsOpen());
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return this->tables[tableIndex].Width();
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}
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//------------------------------------------------------------------------------
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/**
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NOTE: this method is slow because it does a linear search over the column
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names.
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*/
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bool
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ExcelXmlReader::HasColumn(const String& columnName, IndexT tableIndex) const
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{
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n_assert(this->IsOpen());
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return InvalidIndex != this->FindColumnIndex(columnName, tableIndex);
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}
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//------------------------------------------------------------------------------
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/**
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NOTE: this method is slow because it does a linear search over the column
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names.
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*/
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IndexT
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ExcelXmlReader::FindColumnIndex(const String& columnName, IndexT tableIndex) const
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{
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n_assert(columnName.IsValid());
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n_assert(this->IsOpen());
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const FixedTable<String>& table = this->tables[tableIndex];
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IndexT colIndex;
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for (colIndex = 0; colIndex < table.Width(); colIndex++)
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{
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if (table.At(colIndex, 0) == columnName)
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{
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return colIndex;
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}
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}
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// fallthrough: not found
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return InvalidIndex;
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}
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//------------------------------------------------------------------------------
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/**
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*/
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const String&
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ExcelXmlReader::GetElement(IndexT rowIndex, IndexT columnIndex, IndexT tableIndex) const
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{
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n_assert(this->IsOpen());
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return this->tables[tableIndex].At(columnIndex, rowIndex);
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}
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//------------------------------------------------------------------------------
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/**
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*/
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const String&
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ExcelXmlReader::GetElement(IndexT rowIndex, const String& columnName, IndexT tableIndex) const
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{
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n_assert(this->IsOpen());
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IndexT columnIndex = this->FindColumnIndex(columnName, tableIndex);
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return this->tables[tableIndex].At(columnIndex, rowIndex);
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}
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//------------------------------------------------------------------------------
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/**
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*/
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IndexT
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ExcelXmlReader::GetTableIndex(const Util::String& tableName)
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{
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return this->tableNames.FindIndex(tableName);
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}
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} // namespace IO
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