Merge pull request #60 from Lewiscowles1986/Update-XLSX-Reader

Separated getCellValue into multiple functions

.editorconfig

@@ -0,0 +1,15 @@
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_style = space
+indent_size = 4
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[{.travis.yml}]
+indent_size = 2
+
+[*.md]
+trim_trailing_whitespace = false

.gitignore

@@ -1,4 +1,5 @@
 /tests/resources/generated
+/tests/coverage
 /vendor
 composer.lock
 /.idea

.travis.yml

@@ -4,9 +4,15 @@ php:
   - 5.4
   - 5.5
   - 5.6
+  - nightly
+  - hhvm
 
 install:
-  - composer self-update
-  - composer install --prefer-source
+  - composer install --no-interaction
 
-script: phpunit
+script:
+  - mkdir -p build/logs
+  - php vendor/bin/phpunit --coverage-clover build/logs/clover.xml
+
+after_script:
+  - php vendor/bin/coveralls -v

README.md

@@ -1,11 +1,15 @@
 # Spout
 
+[![Latest Stable Version](https://poser.pugx.org/box/spout/v/stable)](https://packagist.org/packages/box/spout)
+[![Project Status](http://opensource.box.com/badges/active.svg)](http://opensource.box.com/badges)
+[![Build Status](https://travis-ci.org/box/spout.png?branch=master)](http://travis-ci.org/box/spout)
+[![Coverage Status](https://coveralls.io/repos/box/spout/badge.svg?branch=master)](https://coveralls.io/r/box/spout?branch=master)
+[![Total Downloads](https://poser.pugx.org/box/spout/downloads)](https://packagist.org/packages/box/spout)
+[![License](https://poser.pugx.org/box/spout/license)](https://packagist.org/packages/box/spout)
+
 Spout is a PHP library to read and write CSV and XLSX files, in a fast and scalable way.
 Contrary to other file readers or writers, it is capable of processing very large files while keeping the memory usage really low (less than 10MB).
 
-[![Build Status](https://travis-ci.org/box/spout.png?branch=master)](http://travis-ci.org/box/spout)
-[![Project Status](http://opensource.box.com/badges/active.svg)](http://opensource.box.com/badges)
-
 
 ## Installation
 
@@ -149,7 +153,7 @@ $writer->setShouldCreateNewSheetsAutomatically(true); // default value
 $writer->setShouldCreateNewSheetsAutomatically(false); // will stop writing new data when limit is reached
 ```
 
-### Using custom temporary folder
+#### Using custom temporary folder
 
 Processing XLSX files require temporary files to be created. By default, Spout will use the system default temporary folder (as returned by sys_get_temp_dir()). It is possible to override this by explicitly setting it on the reader or writer:
 ```php
@@ -180,6 +184,23 @@ It is also possible to retrieve all the sheets currently created:
 $sheets = $writer->getSheets();
 ```
 
+If you rely on the sheet's name in your application, you can access it and customize it this way:
+```php
+// Accessing the sheet name when reading
+while ($reader->hasNextSheet()) {
+    $sheet = $reader->nextSheet();
+    $sheetName = $sheet->getName();
+}
+
+// Accessing the sheet name when writing
+$sheet = $writer->getCurrentSheet();
+$sheetName = $sheet->getName();
+
+// Customizing the sheet name when writing
+$sheet = $writer->getCurrentSheet();
+$sheetName = $sheet->setName('My custom name');
+``` 
+
 ### Fluent interface
 
 Because fluent interfaces are great, you can use them with Spout:
@@ -231,6 +252,11 @@ Here are a few numbers regarding the performance of Spout:
 | Read XLSX (using shared strings) | 1 second                 | 1-2 minutes                  | 35-40 minutes                    |
 | Write XLSX                       | 1 second                 | 20-25 seconds                | 8-10 minutes                     |
 
+#### Does Spout support charts or formulas?
+
+No. This is a compromise to keep memory usage low. Charts and formulas requires data to be kept in memory in order to be used.
+So the larger the file would be, the more memory would be consumed, preventing your code to scale well.
+
 
 ## Support
 

composer.json

@@ -2,7 +2,6 @@
     "name": "box/spout",
     "description": "PHP Library to read and write CSV and XLSX files, in a fast and scalable way",
     "type": "library",
-    "version": "1.0.1",
     "keywords": ["php","read","write","csv","xlsx","excel","spreadsheet","scale","memory","stream","ooxml"],
     "license": "Apache-2.0",
     "homepage": "https://www.github.com/box/spout",
@@ -19,7 +18,8 @@
         "ext-simplexml": "*"
     },
     "require-dev": {
-        "phpunit/phpunit": ">=3.7"
+        "phpunit/phpunit": ">=3.7",
+        "satooshi/php-coveralls": "^0.6.1"
     },
     "autoload": {
         "psr-4": {

phpunit.xml

@@ -14,4 +14,10 @@
         </testsuite>
     </testsuites>
 
+    <filter>
+        <whitelist>
+            <directory suffix=".php">src/</directory>
+        </whitelist>
+    </filter>
+
 </phpunit>

src/Spout/Common/Escaper/CSV.php

@@ -13,6 +13,8 @@ class CSV implements EscaperInterface
     /**
      * Escapes the given string to make it compatible with CSV
      *
+     * @codeCoverageIgnore
+     *
      * @param string $string The string to escape
      * @return string The escaped string
      */
@@ -24,6 +26,8 @@ class CSV implements EscaperInterface
     /**
      * Unescapes the given string to make it compatible with CSV
      *
+     * @codeCoverageIgnore
+     *
      * @param string $string The string to unescape
      * @return string The unescaped string
      */

src/Spout/Common/Escaper/XLSX.php

@@ -27,7 +27,7 @@ class XLSX implements EscaperInterface
     public function escape($string)
     {
         $escapedString = $this->escapeControlCharacters($string);
-        $escapedString = htmlspecialchars($escapedString, ENT_QUOTES, 'utf-8');
+        $escapedString = htmlspecialchars($escapedString, ENT_QUOTES);
 
         return $escapedString;
     }

src/Spout/Common/Helper/FileSystemHelper.php

@@ -36,7 +36,7 @@ class FileSystemHelper
     {
         $this->throwIfOperationNotInBaseFolder($parentFolderPath);
 
-        $folderPath = $parentFolderPath . DIRECTORY_SEPARATOR . $folderName;
+        $folderPath = $parentFolderPath . '/' . $folderName;
 
         $wasCreationSuccessful = mkdir($folderPath, 0777, true);
         if (!$wasCreationSuccessful) {
@@ -60,7 +60,7 @@ class FileSystemHelper
     {
         $this->throwIfOperationNotInBaseFolder($parentFolderPath);
 
-        $filePath = $parentFolderPath . DIRECTORY_SEPARATOR . $fileName;
+        $filePath = $parentFolderPath . '/' . $fileName;
 
         $wasCreationSuccessful = file_put_contents($filePath, $fileContents);
         if (!$wasCreationSuccessful) {

src/Spout/Common/Helper/GlobalFunctionsHelper.php

@@ -6,6 +6,8 @@ namespace Box\Spout\Common\Helper;
  * Class GlobalFunctionsHelper
  * This class wraps global functions to facilitate testing
  *
+ * @codeCoverageIgnore
+ *
  * @package Box\Spout\Common\Helper
  */
 class GlobalFunctionsHelper
@@ -89,6 +91,21 @@ class GlobalFunctionsHelper
         return fgetcsv($handle, $length, $delimiter, $enclosure);
     }
 
+    /**
+     * Wrapper around global function fputcsv()
+     * @see fputcsv()
+     *
+     * @param resource $handle
+     * @param array $fields
+     * @param string|void $delimiter
+     * @param string|void $enclosure
+     * @return int
+     */
+    public function fputcsv($handle, array $fields, $delimiter = null, $enclosure = null)
+    {
+        return fputcsv($handle, $fields, $delimiter, $enclosure);
+    }
+
     /**
      * Wrapper around global function fclose()
      * @see fclose()
@@ -117,7 +134,7 @@ class GlobalFunctionsHelper
      * Wrapper around global function file_exists()
      * @see file_exists()
      *
-     * @param string $filename
+     * @param string $fileName
      * @return bool
      */
     public function file_exists($fileName)
@@ -125,11 +142,23 @@ class GlobalFunctionsHelper
         return file_exists($fileName);
     }
 
+    /**
+     * Wrapper around global function file_get_contents()
+     * @see file_get_contents()
+     *
+     * @param string $filePath
+     * @return bool
+     */
+    public function file_get_contents($filePath)
+    {
+        return file_get_contents($filePath);
+    }
+
     /**
      * Wrapper around global function is_readable()
      * @see is_readable()
      *
-     * @param string $filename
+     * @param string $fileName
      * @return bool
      */
     public function is_readable($fileName)
@@ -142,11 +171,12 @@ class GlobalFunctionsHelper
      * @see basename()
      *
      * @param string $path
+     * @param string|void $suffix
      * @return string
      */
-    public function basename($path)
+    public function basename($path, $suffix = null)
     {
-        return basename($path);
+        return basename($path, $suffix);
     }
 
     /**

src/Spout/Reader/AbstractReader.php

@@ -14,7 +14,7 @@ use Box\Spout\Reader\Exception\EndOfFileReachedException;
  */
 abstract class AbstractReader implements ReaderInterface
 {
-    /** @var int Used to keep track of the row number */
+    /** @var int Used to keep track of the row index */
     protected $currentRowIndex = 0;
 
     /** @var bool Indicates whether the stream is currently open */

src/Spout/Reader/CSV.php

@@ -52,7 +52,7 @@ class CSV extends AbstractReader
      * The file must be UTF-8 encoded.
      * @TODO add encoding detection/conversion
      *
-     * @param  string $filePath Path of the XLSX file to be read
+     * @param  string $filePath Path of the CSV file to be read
      * @return void
      * @throws \Box\Spout\Common\Exception\IOException
      */

src/Spout/Reader/Helper/XLSX/CellHelper.php

@@ -25,7 +25,7 @@ class CellHelper
     {
         $existingIndexes = array_keys($dataArray);
 
-        $newIndexes = array_fill_keys(range(min($existingIndexes), max($existingIndexes)), $fillValue);
+        $newIndexes = array_fill_keys(range(0, max($existingIndexes)), $fillValue);
         $dataArray += $newIndexes;
 
         ksort($dataArray);

src/Spout/Reader/Helper/XLSX/SharedStringsHelper.php

@@ -31,6 +31,9 @@ class SharedStringsHelper
      */
     const MAX_NUM_STRINGS_PER_TEMP_FILE = 10000;
 
+    /** Value to use to escape the line feed character ("\n") */
+    const ESCAPED_LINE_FEED_CHARACTER = '_x000A_';
+
     /** @var string Path of the XLSX file being read */
     protected $filePath;
 
@@ -68,6 +71,24 @@ class SharedStringsHelper
         $this->tempFolder = $this->fileSystemHelper->createFolder($rootTempFolder, uniqid('sharedstrings'));
     }
 
+    /**
+     * Returns whether the XLSX file contains a shared strings XML file
+     *
+     * @return bool
+     */
+    public function hasSharedStrings()
+    {
+        $hasSharedStrings = false;
+        $zip = new \ZipArchive();
+
+        if ($zip->open($this->filePath) === true) {
+            $hasSharedStrings = ($zip->locateName(self::SHARED_STRINGS_XML_FILE_PATH) !== false);
+            $zip->close();
+        }
+
+        return $hasSharedStrings;
+    }
+
     /**
      * Builds an in-memory array containing all the shared strings of the worksheet.
      * All the strings are stored in a XML file, located at 'xl/sharedStrings.xml'.
@@ -80,7 +101,6 @@ class SharedStringsHelper
      * Please note that SimpleXML does not provide such a functionality but since it is faster
      * and more handy to parse few XML nodes, it is used in combination with XMLReader for that purpose.
      *
-     * @param  string $filePath
      * @return void
      * @throws \Box\Spout\Common\Exception\IOException If sharedStrings.xml can't be read
      */
@@ -91,8 +111,8 @@ class SharedStringsHelper
         $this->tempFilePointer = null;
         $escaper = new \Box\Spout\Common\Escaper\XLSX();
 
-        $sharedStringsFilePath = 'zip://' . $this->filePath . '#' . self::SHARED_STRINGS_XML_FILE_PATH;
-        if ($xmlReader->open($sharedStringsFilePath, null, LIBXML_NONET) === false) {
+        $sharedStringsFilePath = $this->getSharedStringsFilePath();
+        if ($xmlReader->open($sharedStringsFilePath, null, LIBXML_NOENT|LIBXML_NONET) === false) {
             throw new IOException('Could not open "' . self::SHARED_STRINGS_XML_FILE_PATH . '".');
         }
 
@@ -120,7 +140,12 @@ class SharedStringsHelper
             }
 
             $unescapedTextValue = $escaper->unescape($textValue);
-            $this->writeSharedStringToTempFile($unescapedTextValue, $sharedStringIndex);
+
+            // The shared string retrieval logic expects each cell data to be on one line only
+            // Encoding the line feed character allows to preserve this assumption
+            $lineFeedEncodedTextValue = $this->escapeLineFeed($unescapedTextValue);
+
+            $this->writeSharedStringToTempFile($lineFeedEncodedTextValue, $sharedStringIndex);
 
             $sharedStringIndex++;
 
@@ -136,6 +161,14 @@ class SharedStringsHelper
         $xmlReader->close();
     }
 
+    /**
+     * @return string The path to the shared strings XML file
+     */
+    protected function getSharedStringsFilePath()
+    {
+        return 'zip://' . $this->filePath . '#' . self::SHARED_STRINGS_XML_FILE_PATH;
+    }
+
     /**
      * Removes nodes that should not be read, like the pronunciation of the Kanji characters.
      * By keeping them, their text content would be added to the read string.
@@ -216,7 +249,7 @@ class SharedStringsHelper
     protected function getSharedStringTempFilePath($sharedStringIndex)
     {
         $numTempFile = intval($sharedStringIndex / self::MAX_NUM_STRINGS_PER_TEMP_FILE);
-        return $this->tempFolder . DIRECTORY_SEPARATOR . 'sharedstrings' . $numTempFile;
+        return $this->tempFolder . '/sharedstrings' . $numTempFile;
     }
 
     /**
@@ -246,16 +279,39 @@ class SharedStringsHelper
 
         $sharedString = null;
         if (array_key_exists($indexInFile, $this->inMemoryTempFileContents)) {
-            $sharedString = $this->inMemoryTempFileContents[$indexInFile];
+            $escapedSharedString = $this->inMemoryTempFileContents[$indexInFile];
+            $sharedString = $this->unescapeLineFeed($escapedSharedString);
         }
 
-        if (!$sharedString) {
+        if ($sharedString === null) {
             throw new SharedStringNotFoundException("Shared string not found for index: $sharedStringIndex");
         }
 
         return rtrim($sharedString, PHP_EOL);
     }
 
+    /**
+     * Escapes the line feed character (\n)
+     *
+     * @param string $unescapedString
+     * @return string
+     */
+    private function escapeLineFeed($unescapedString)
+    {
+        return str_replace("\n", self::ESCAPED_LINE_FEED_CHARACTER, $unescapedString);
+    }
+
+    /**
+     * Unescapes the line feed character (\n)
+     *
+     * @param string $escapedString
+     * @return string
+     */
+    private function unescapeLineFeed($escapedString)
+    {
+        return str_replace(self::ESCAPED_LINE_FEED_CHARACTER, "\n", $escapedString);
+    }
+
     /**
      * Deletes the created temporary folder and all its contents
      *

src/Spout/Reader/Helper/XLSX/WorksheetHelper.php

@@ -3,6 +3,7 @@
 namespace Box\Spout\Reader\Helper\XLSX;
 
 use Box\Spout\Reader\Internal\XLSX\Worksheet;
+use Box\Spout\Reader\Sheet;
 
 /**
  * Class WorksheetHelper
@@ -12,11 +13,18 @@ use Box\Spout\Reader\Internal\XLSX\Worksheet;
  */
 class WorksheetHelper
 {
-    /** Path of Content_Types XML file inside the XLSX file */
-    const CONTENT_TYPES_XML_FILE_PATH = '[Content_Types].xml';
+    /** Extension for XML files */
+    const XML_EXTENSION = '.xml';
 
-    /** Main namespace for the [Content_Types].xml file */
+    /** Paths of XML files relative to the XLSX file root */
+    const CONTENT_TYPES_XML_FILE_PATH = '[Content_Types].xml';
+    const WORKBOOK_XML_RELS_FILE_PATH = 'xl/_rels/workbook.xml.rels';
+    const WORKBOOK_XML_FILE_PATH = 'xl/workbook.xml';
+
+    /** Namespaces for the XML files */
     const MAIN_NAMESPACE_FOR_CONTENT_TYPES_XML = 'http://schemas.openxmlformats.org/package/2006/content-types';
+    const MAIN_NAMESPACE_FOR_WORKBOOK_XML_RELS = 'http://schemas.openxmlformats.org/package/2006/relationships';
+    const MAIN_NAMESPACE_FOR_WORKBOOK_XML = 'http://schemas.openxmlformats.org/spreadsheetml/2006/main';
 
     /** Value of the Override attribute used in [Content_Types].xml to define worksheets */
     const OVERRIDE_CONTENT_TYPES_ATTRIBUTE = 'application/vnd.openxmlformats-officedocument.spreadsheetml.worksheet+xml';
@@ -24,12 +32,23 @@ class WorksheetHelper
     /** @var string Path of the XLSX file being read */
     protected $filePath;
 
+    /** @var \Box\Spout\Common\Helper\GlobalFunctionsHelper Helper to work with global functions */
+    protected $globalFunctionsHelper;
+
+    /** @var \SimpleXMLElement XML element representing the workbook.xml.rels file */
+    protected $workbookXMLRelsAsXMLElement;
+
+    /** @var \SimpleXMLElement XML element representing the workbook.xml file */
+    protected $workbookXMLAsXMLElement;
+
     /**
      * @param string $filePath Path of the XLSX file being read
+     * @param \Box\Spout\Common\Helper\GlobalFunctionsHelper $globalFunctionsHelper
      */
-    public function __construct($filePath)
+    public function __construct($filePath, $globalFunctionsHelper)
     {
         $this->filePath = $filePath;
+        $this->globalFunctionsHelper = $globalFunctionsHelper;
     }
 
     /**
@@ -42,23 +61,139 @@ class WorksheetHelper
     {
         $worksheets = [];
 
-        $xmlContents = file_get_contents('zip://' . $this->filePath . '#' . self::CONTENT_TYPES_XML_FILE_PATH);
-
-        $contentTypes = new \SimpleXMLElement($xmlContents);
-        $contentTypes->registerXPathNamespace('ns', self::MAIN_NAMESPACE_FOR_CONTENT_TYPES_XML);
+        $contentTypesAsXMLElement = $this->getFileAsXMLElementWithNamespace(
+            self::CONTENT_TYPES_XML_FILE_PATH,
+            self::MAIN_NAMESPACE_FOR_CONTENT_TYPES_XML
+        );
 
         // find all nodes defining a worksheet
-        $sheetNodes = $contentTypes->xpath('//ns:Override[@ContentType="' . self::OVERRIDE_CONTENT_TYPES_ATTRIBUTE . '"]');
+        $sheetNodes = $contentTypesAsXMLElement->xpath('//ns:Override[@ContentType="' . self::OVERRIDE_CONTENT_TYPES_ATTRIBUTE . '"]');
 
         for ($i = 0; $i < count($sheetNodes); $i++) {
             $sheetNode = $sheetNodes[$i];
             $sheetDataXMLFilePath = (string) $sheetNode->attributes()->PartName;
-            $worksheets[] = new Worksheet($i, $sheetDataXMLFilePath);
+
+            $sheet = $this->getSheet($sheetDataXMLFilePath, $i);
+            $worksheets[] = new Worksheet($sheet, $i, $sheetDataXMLFilePath);
         }
 
         return $worksheets;
     }
 
+    /**
+     * Returns an instance of a sheet, given the path of its data XML file.
+     * We first look at "xl/_rels/workbook.xml.rels" to find the relationship ID of the sheet.
+     * Then we look at "xl/worbook.xml" to find the sheet entry associated to the found ID.
+     * The entry contains the ID and name of the sheet.
+     *
+     * If this piece of data can't be found by parsing the different XML files, the ID will default
+     * to the sheet index, based on order in [Content_Types].xml. Similarly, the sheet's name will
+     * default to the data sheet XML file name ("xl/worksheets/sheet2.xml" => "sheet2").
+     *
+     * @param string $sheetDataXMLFilePath Path of the sheet data XML file as in [Content_Types].xml
+     * @param int $sheetIndexZeroBased Index of the sheet, based on order in [Content_Types].xml (zero-based)
+     * @return \Box\Spout\Reader\Sheet Sheet instance
+     */
+    protected function getSheet($sheetDataXMLFilePath, $sheetIndexZeroBased)
+    {
+        $sheetId = $sheetIndexZeroBased + 1;
+        $sheetName = $this->getDefaultSheetName($sheetDataXMLFilePath);
+
+        /*
+         * In [Content_Types].xml, the path is "/xl/worksheets/sheet1.xml"
+         * In workbook.xml.rels, it is only "worksheets/sheet1.xml"
+         */
+        $sheetDataXMLFilePathInWorkbookXMLRels = ltrim($sheetDataXMLFilePath, '/xl/');
+
+        // find the node associated to the given file path
+        $workbookXMLResElement = $this->getWorkbookXMLRelsAsXMLElement();
+        $relationshipNodes = $workbookXMLResElement->xpath('//ns:Relationship[@Target="' . $sheetDataXMLFilePathInWorkbookXMLRels . '"]');
+
+        if (count($relationshipNodes) === 1) {
+            $relationshipNode = $relationshipNodes[0];
+            $sheetId = (string) $relationshipNode->attributes()->Id;
+
+            $workbookXMLElement = $this->getWorkbookXMLAsXMLElement();
+            $sheetNodes = $workbookXMLElement->xpath('//ns:sheet[@r:id="' . $sheetId . '"]');
+
+            if (count($sheetNodes) === 1) {
+                $sheetNode = $sheetNodes[0];
+                $sheetId = (int) $sheetNode->attributes()->sheetId;
+                $escapedSheetName = (string) $sheetNode->attributes()->name;
+
+                $escaper = new \Box\Spout\Common\Escaper\XLSX();
+                $sheetName = $escaper->unescape($escapedSheetName);
+            }
+        }
+
+        return new Sheet($sheetId, $sheetIndexZeroBased, $sheetName);
+    }
+
+    /**
+     * Returns the default name of the sheet whose data is located
+     * at the given path.
+     *
+     * @param $sheetDataXMLFilePath
+     * @return string The default sheet name
+     */
+    protected function getDefaultSheetName($sheetDataXMLFilePath)
+    {
+        return $this->globalFunctionsHelper->basename($sheetDataXMLFilePath, self::XML_EXTENSION);
+    }
+
+    /**
+     * Returns a representation of the workbook.xml.rels file, ready to be parsed.
+     * The returned value is cached.
+     *
+     * @return \SimpleXMLElement XML element representating the workbook.xml.rels file
+     */
+    protected function getWorkbookXMLRelsAsXMLElement()
+    {
+        if (!$this->workbookXMLRelsAsXMLElement) {
+            $this->workbookXMLRelsAsXMLElement = $this->getFileAsXMLElementWithNamespace(
+                self::WORKBOOK_XML_RELS_FILE_PATH,
+                self::MAIN_NAMESPACE_FOR_WORKBOOK_XML_RELS
+            );
+        }
+
+        return $this->workbookXMLRelsAsXMLElement;
+    }
+
+    /**
+     * Returns a representation of the workbook.xml file, ready to be parsed.
+     * The returned value is cached.
+     *
+     * @return \SimpleXMLElement XML element representating the workbook.xml.rels file
+     */
+    protected function getWorkbookXMLAsXMLElement()
+    {
+        if (!$this->workbookXMLAsXMLElement) {
+            $this->workbookXMLAsXMLElement = $this->getFileAsXMLElementWithNamespace(
+                self::WORKBOOK_XML_FILE_PATH,
+                self::MAIN_NAMESPACE_FOR_WORKBOOK_XML
+            );
+        }
+
+        return $this->workbookXMLAsXMLElement;
+    }
+
+    /**
+     * Loads the contents of the given file in an XML parser and register the given XPath namespace.
+     *
+     * @param string $xmlFilePath The path of the XML file inside the XLSX file
+     * @param string $mainNamespace The main XPath namespace to register
+     * @return \SimpleXMLElement The XML element representing the file
+     */
+    protected function getFileAsXMLElementWithNamespace($xmlFilePath, $mainNamespace)
+    {
+        $xmlContents = $this->globalFunctionsHelper->file_get_contents('zip://' . $this->filePath . '#' . $xmlFilePath);
+
+        $xmlElement = new \SimpleXMLElement($xmlContents);
+        $xmlElement->registerXPathNamespace('ns', $mainNamespace);
+
+        return $xmlElement;
+    }
+
     /**
      * Returns whether another worksheet exists after the current worksheet.
      * The order is determined by the order of appearance in the [Content_Types].xml file.
@@ -69,6 +204,6 @@ class WorksheetHelper
      */
     public function hasNextWorksheet($currentWorksheet, $allWorksheets)
     {
-        return ($currentWorksheet === null || ($currentWorksheet->getWorksheetNumber() + 1 < count($allWorksheets)));
+        return ($currentWorksheet === null || ($currentWorksheet->getWorksheetIndex() + 1 < count($allWorksheets)));
     }
 }

src/Spout/Reader/Internal/XLSX/Worksheet.php

@@ -10,35 +10,49 @@ namespace Box\Spout\Reader\Internal\XLSX;
  */
 class Worksheet
 {
-    /** @var int Worksheet number, based on the order of appareance in [Content_Types].xml (zero-based) */
-    protected $worksheetNumber;
+    /** @var \Box\Spout\Reader\Sheet The "external" sheet */
+    protected $externalSheet;
+
+    /** @var int Worksheet index, based on the order of appareance in [Content_Types].xml (zero-based) */
+    protected $worksheetIndex;
 
     /** @var string Path of the XML file containing the worksheet data */
     protected $dataXmlFilePath;
 
-    /**
-     * @param int $worksheetNumber Worksheet number, based on the order of appareance in [Content_Types].xml (zero-based)
+    /**\
+     * @param \Box\Spout\Reader\Sheet $externalSheet The associated "external" sheet
+     * @param int $worksheetIndex Worksheet index, based on the order of appareance in [Content_Types].xml (zero-based)
      * @param string $dataXmlFilePath Path of the XML file containing the worksheet data
      */
-    public function __construct($worksheetNumber, $dataXmlFilePath)
+    public function __construct($externalSheet, $worksheetIndex, $dataXmlFilePath)
     {
-        $this->worksheetNumber = $worksheetNumber;
+        $this->externalSheet = $externalSheet;
+        $this->worksheetIndex = $worksheetIndex;
         $this->dataXmlFilePath = $dataXmlFilePath;
     }
 
     /**
-     * @return string Path of the XML file containing the worksheet data, without the leading slash
+     * @return string Path of the XML file containing the worksheet data,
+     *                without the leading slash.
      */
     public function getDataXmlFilePath()
     {
-        return ltrim($this->dataXmlFilePath, DIRECTORY_SEPARATOR);
+        return ltrim($this->dataXmlFilePath, '/');
+    }
+
+    /**
+     * @return \Box\Spout\Reader\Sheet The "external" sheet
+     */
+    public function getExternalSheet()
+    {
+        return $this->externalSheet;
     }
 
     /**
      * @return int
      */
-    public function getWorksheetNumber()
+    public function getWorksheetIndex()
     {
-        return $this->worksheetNumber;
+        return $this->worksheetIndex;
     }
 }

src/Spout/Reader/Sheet.php

@@ -0,0 +1,57 @@
+<?php
+
+namespace Box\Spout\Reader;
+
+/**
+ * Class Sheet
+ * Represents a worksheet within a XLSX file
+ *
+ * @package Box\Spout\Reader
+ */
+class Sheet
+{
+    /** @var int ID of the sheet */
+    protected $id;
+
+    /** @var int Index of the sheet, based on order of creation (zero-based) */
+    protected $index;
+
+    /** @var string Name of the sheet */
+    protected $name;
+
+    /**
+     * @param int $sheetId ID of the sheet
+     * @param int $sheetIndex Index of the sheet, based on order of creation (zero-based)
+     * @param string $sheetName Name of the sheet
+     */
+    function __construct($sheetId, $sheetIndex, $sheetName)
+    {
+        $this->id = $sheetId;
+        $this->index = $sheetIndex;
+        $this->name = $sheetName;
+    }
+
+    /**
+     * @return int ID of the sheet
+     */
+    public function getId()
+    {
+        return $this->id;
+    }
+
+    /**
+     * @return int Index of the sheet, based on order of creation (zero-based)
+     */
+    public function getIndex()
+    {
+        return $this->index;
+    }
+
+    /**
+     * @return string Name of the sheet
+     */
+    public function getName()
+    {
+        return $this->name;
+    }
+}

src/Spout/Reader/XLSX.php

@@ -19,6 +19,14 @@ use Box\Spout\Reader\Helper\XLSX\WorksheetHelper;
  */
 class XLSX extends AbstractReader
 {
+    const CELL_TYPE_INLINE_STRING = 'inlineStr';
+    const CELL_TYPE_STR = 'str';
+    const CELL_TYPE_SHARED_STRING = 's';
+    const CELL_TYPE_BOOLEAN = 'b';
+    const CELL_TYPE_NUMERIC = 'n';
+    const CELL_TYPE_DATE = 'd';
+    const CELL_TYPE_ERROR = 'e';
+    
     /** @var string Real path of the file to read */
     protected $filePath;
 
@@ -72,11 +80,15 @@ class XLSX extends AbstractReader
         $this->zip = new \ZipArchive();
 
         if ($this->zip->open($filePath) === true) {
-            // Extracts all the strings from the worksheets for easy access in the future
-            $this->extractSharedStrings($filePath);
+            $this->sharedStringsHelper = new SharedStringsHelper($filePath, $this->tempFolder);
+
+            if ($this->sharedStringsHelper->hasSharedStrings()) {
+                // Extracts all the strings from the worksheets for easy access in the future
+                $this->sharedStringsHelper->extractSharedStrings();
+            }
 
             // Fetch all available worksheets
-            $this->worksheetHelper = new WorksheetHelper($filePath);
+            $this->worksheetHelper = new WorksheetHelper($filePath, $this->globalFunctionsHelper);
             $this->worksheets = $this->worksheetHelper->getWorksheets($filePath);
 
             if (count($this->worksheets) === 0) {
@@ -87,19 +99,6 @@ class XLSX extends AbstractReader
         }
     }
 
-    /**
-     * Builds an in-memory array containing all the shared strings of the worksheets.
-     *
-     * @param  string $filePath Path of the XLSX file to be read
-     * @return void
-     * @throws \Box\Spout\Common\Exception\IOException If sharedStrings XML file can't be read
-     */
-    protected function extractSharedStrings($filePath)
-    {
-        $this->sharedStringsHelper = new SharedStringsHelper($filePath, $this->tempFolder);
-        $this->sharedStringsHelper->extractSharedStrings();
-    }
-
     /**
      * Returns whether another worksheet exists after the current worksheet.
      *
@@ -119,29 +118,31 @@ class XLSX extends AbstractReader
      * Moves the pointer to the current worksheet.
      * Moving to another worksheet will stop the reading in the current worksheet.
      *
-     * @return void
+     * @return \Box\Spout\Reader\Sheet The next sheet
      * @throws Exception\ReaderNotOpenedException If the stream was not opened first
      * @throws Exception\EndOfWorksheetsReachedException If there is no more worksheets to read
      */
     public function nextSheet()
     {
-        if ($this->hasNextSheet()) {
-            if ($this->currentWorksheet === null) {
-                $nextWorksheet = $this->worksheets[0];
-            } else {
-                $currentWorksheetNumber = $this->currentWorksheet->getWorksheetNumber();
-                $nextWorksheet = $this->worksheets[$currentWorksheetNumber + 1];
-            }
-
-            $this->initXmlReaderForWorksheetData($nextWorksheet);
-            $this->currentWorksheet = $nextWorksheet;
-
-            // make sure that we are ready to read more rows
-            $this->hasReachedEndOfFile = false;
-            $this->emptyRowDataBuffer();
-        } else {
+        if (!$this->hasNextSheet()) {
             throw new EndOfWorksheetsReachedException('End of worksheets was reached. Cannot read more worksheets.');
         }
+
+        if ($this->currentWorksheet === null) {
+            $nextWorksheet = $this->worksheets[0];
+        } else {
+            $currentWorksheetIndex = $this->currentWorksheet->getWorksheetIndex();
+            $nextWorksheet = $this->worksheets[$currentWorksheetIndex + 1];
+        }
+
+        $this->initXmlReaderForWorksheetData($nextWorksheet);
+        $this->currentWorksheet = $nextWorksheet;
+
+        // make sure that we are ready to read more rows
+        $this->hasReachedEndOfFile = false;
+        $this->emptyRowDataBuffer();
+
+        return $this->currentWorksheet->getExternalSheet();
     }
 
     /**
@@ -165,7 +166,7 @@ class XLSX extends AbstractReader
         $worksheetDataXMLFilePath = $worksheet->getDataXmlFilePath();
 
         $worksheetDataFilePath = 'zip://' . $this->filePath . '#' . $worksheetDataXMLFilePath;
-        if ($this->xmlReader->open($worksheetDataFilePath, null, LIBXML_NONET) === false) {
+        if ($this->xmlReader->open($worksheetDataFilePath, null, LIBXML_NOENT|LIBXML_NONET) === false) {
             throw new IOException('Could not open "' . $worksheetDataXMLFilePath . '".');
         }
     }
@@ -184,6 +185,7 @@ class XLSX extends AbstractReader
             throw new BadUsageException('You must call nextSheet() before calling hasNextRow() or nextRow()');
         }
 
+        $escaper = new \Box\Spout\Common\Escaper\XLSX();
         $isInsideRowTag = false;
         $rowData = [];
 
@@ -195,6 +197,7 @@ class XLSX extends AbstractReader
                     $lastCellIndex = $matches[1];
                     $this->numberOfColumns = CellHelper::getColumnIndexFromCellIndex($lastCellIndex) + 1;
                 }
+
             } else if ($this->xmlReader->nodeType == \XMLReader::ELEMENT && $this->xmlReader->name === 'row') {
                 // Start of the row description
                 $isInsideRowTag = true;
@@ -207,20 +210,15 @@ class XLSX extends AbstractReader
                     $numberOfColumnsForRow = intval($numberOfColumnsForRow);
                 }
                 $rowData = ($numberOfColumnsForRow !== 0) ? array_fill(0, $numberOfColumnsForRow, '') : [];
+
             } else if ($isInsideRowTag && $this->xmlReader->nodeType == \XMLReader::ELEMENT && $this->xmlReader->name === 'c') {
                 // Start of a cell description
                 $currentCellIndex = $this->xmlReader->getAttribute('r');
                 $currentColumnIndex = CellHelper::getColumnIndexFromCellIndex($currentCellIndex);
-                $node = $this->xmlReader->expand();
 
-                $hasSharedString = ($this->xmlReader->getAttribute('t') === 's');
-                if ($hasSharedString) {
-                    $sharedStringIndex = intval($node->nodeValue);
-                    $rowData[$currentColumnIndex] = $this->sharedStringsHelper->getStringAtIndex($sharedStringIndex);
-                } else {
-                    // for inline strings or numbers, just get the value
-                    $rowData[$currentColumnIndex] = trim($node->nodeValue);
-                }
+                $node = $this->xmlReader->expand();
+                $rowData[$currentColumnIndex] = $this->getCellValue($node, $escaper);
+
             } else if ($this->xmlReader->nodeType == \XMLReader::END_ELEMENT && $this->xmlReader->name === 'row') {
                 // End of the row description
                 // If needed, we fill the empty cells
@@ -233,6 +231,149 @@ class XLSX extends AbstractReader
         return ($rowData !== []) ? $rowData : null;
     }
 
+    /**
+     * Returns the cell's string value from a node's nested value node
+     *
+     * @param \DOMNode $node
+     * @return string The value associated with the cell
+     */
+    protected function getVNodeValue($node)
+    {
+        // for cell types having a "v" tag containing the value.
+        // if not, the returned value should be empty string.
+        $vNode = $node->getElementsByTagName('v')->item(0);
+        if ($vNode !== null) {
+            return $vNode->nodeValue;
+        }
+        return "";
+    }
+
+    /**
+     * Returns the cell String value where string is inline.
+     *
+     * @param \DOMNode $node
+     * @param \Box\Spout\Common\Escaper\XLSX $escaper
+     * @return string The value associated with the cell (null when the cell has an error)
+     */
+    protected function formatInlineStringCellValue($node, $escaper)
+    {
+        // inline strings are formatted this way:
+        // <c r="A1" t="inlineStr"><is><t>[INLINE_STRING]</t></is></c>
+        $tNode = $node->getElementsByTagName('t')->item(0);
+        $escapedCellValue = trim($tNode->nodeValue);
+        $cellValue = $escaper->unescape($escapedCellValue);
+        return $cellValue;
+    }
+
+    /**
+     * Returns the cell String value from shared-strings file using nodeValue index.
+     *
+     * @param string $nodeValue
+     * @param \Box\Spout\Common\Escaper\XLSX $escaper
+     * @return string The value associated with the cell (null when the cell has an error)
+     */
+    protected function formatSharedStringCellValue($nodeValue, $escaper)
+    {
+        // shared strings are formatted this way:
+        // <c r="A1" t="s"><v>[SHARED_STRING_INDEX]</v></c>
+        $sharedStringIndex = intval($nodeValue);
+        $escapedCellValue = $this->sharedStringsHelper->getStringAtIndex($sharedStringIndex);
+        $cellValue = $escaper->unescape($escapedCellValue);
+        return $cellValue;
+    }
+
+    /**
+     * Returns the cell String value, where string is stored in value node.
+     *
+     * @param string $nodeValue
+     * @param \Box\Spout\Common\Escaper\XLSX $escaper
+     * @return string The value associated with the cell (null when the cell has an error)
+     */
+    protected function formatStrCellValue($nodeValue, $escaper)
+    {
+        $escapedCellValue = trim($nodeValue);
+        $cellValue = $escaper->unescape($escapedCellValue);
+        return $cellValue;
+    }
+
+    /**
+     * Returns the cell Numeric value from string of nodeValue.
+     *
+     * @param string $nodeValue
+     * @param \Box\Spout\Common\Escaper\XLSX $escaper
+     * @return int|float The value associated with the cell
+     */
+    protected function formatNumericCellValue($nodeValue)
+    {
+        $cellValue = is_int($nodeValue) ? intval($nodeValue) : floatval($nodeValue);
+        return $cellValue;
+    }
+
+    /**
+     * Returns the cell Boolean value from a specific node's Value.
+     *
+     * @param string $nodeValue
+     * @return bool The value associated with the cell
+     */
+    protected function formatBooleanCellValue($nodeValue)
+    {
+        // !! is similar to boolval()
+        $cellValue = !!$nodeValue;
+        return $cellValue;
+    }
+
+    /**
+     * Returns a cell's PHP Date value, associated to the given stored nodeValue.
+     *
+     * @param string $nodeValue
+     * @param \Box\Spout\Common\Escaper\XLSX $escaper
+     * @return DateTime|null The value associated with the cell (null when the cell has an error)
+     */
+    protected function formatDateCellValue($nodeValue)
+    {
+        try { // Mitigate thrown Exception on invalid date-time format (http://php.net/manual/en/datetime.construct.php)
+            $cellValue = new \DateTime($nodeValue);
+            return $cellValue;
+        } catch (\Exception $e) {
+            return null;
+        }
+    }
+
+    /**
+     * Returns the (unescaped) correctly marshalled, cell value associated to the given XML node.
+     *
+     * @param \DOMNode $node
+     * @param \Box\Spout\Common\Escaper\XLSX $escaper
+     * @return string|int|float|bool|null The value associated with the cell (null when the cell has an error)
+     */
+    protected function getCellValue($node, $escaper)
+    {
+        // Default cell type is "n"
+        $cellType = $node->getAttribute('t') ?: 'n';
+        $vNodeValue = $this->getVNodeValue($node);
+        if ( ($vNodeValue === "") && ($cellType !== self::CELL_TYPE_INLINE_STRING) ) {
+            return $vNodeValue;
+        }
+
+        switch ($cellType)
+        {
+            case self::CELL_TYPE_INLINE_STRING:
+                return $this->formatInlineStringCellValue($node, $escaper);
+            case self::CELL_TYPE_SHARED_STRING:
+                return $this->formatSharedStringCellValue($vNodeValue, $escaper);
+            case self::CELL_TYPE_STR:
+                return $this->formatStrCellValue($vNodeValue, $escaper);
+            case self::CELL_TYPE_BOOLEAN:
+                return $this->formatBooleanCellValue($vNodeValue);
+            case self::CELL_TYPE_NUMERIC:
+                return $this->formatNumericCellValue($vNodeValue);
+            case self::CELL_TYPE_DATE:
+                return $this->formatDateCellValue($vNodeValue);
+            default:
+                return null;
+        }
+    }
+
     /**
      * Closes the reader. To be used after reading the file.
      *

src/Spout/Writer/AbstractWriter.php

@@ -39,6 +39,7 @@ abstract class AbstractWriter implements WriterInterface
 
     /**
      * Adds data to the currently openned writer.
+     * The data must be UTF-8 encoded.
      *
      * @param  array $dataRow Array containing data to be streamed.
      *          Example $dataRow = ['data1', 1234, null, '', 'data5'];
@@ -88,6 +89,8 @@ abstract class AbstractWriter implements WriterInterface
      * Inits the writer and opens it to accept data.
      * By using this method, the data will be outputted directly to the browser.
      *
+     * @codeCoverageIgnore
+     *
      * @param  string $outputFileName Name of the output file that will contain the data. If a path is passed in, only the file name will be kept
      * @return \Box\Spout\Writer\AbstractWriter
      * @throws \Box\Spout\Common\Exception\IOException If the writer cannot be opened
@@ -135,9 +138,11 @@ abstract class AbstractWriter implements WriterInterface
 
     /**
      * Write given data to the output. New data will be appended to end of stream.
+     * The data must be UTF-8 encoded.
      *
      * @param  array $dataRow Array containing data to be streamed.
-     *          Example $dataRow = ['data1', 1234, null, '', 'data5'];
+     *                        If empty, no data is added (i.e. not even as a blank row)
+     *                        Example: $dataRow = ['data1', 1234, null, '', 'data5', false];
      *
      * @return \Box\Spout\Writer\AbstractWriter
      * @throws \Box\Spout\Writer\Exception\WriterNotOpenedException If this function is called before opening the writer
@@ -146,7 +151,10 @@ abstract class AbstractWriter implements WriterInterface
     public function addRow(array $dataRow)
     {
         if ($this->isWriterOpened) {
-            $this->addRowToWriter($dataRow);
+            // empty $dataRow should not add an empty line
+            if (!empty($dataRow)) {
+                $this->addRowToWriter($dataRow);
+            }
         } else {
             throw new WriterNotOpenedException('The writer needs to be opened before adding row.');
         }
@@ -156,12 +164,14 @@ abstract class AbstractWriter implements WriterInterface
 
     /**
      * Write given data to the output. New data will be appended to end of stream.
+     * The data must be UTF-8 encoded.
      *
      * @param  array $dataRows Array of array containing data to be streamed.
-     *          Example $dataRow = [
-     *              ['data11', 12, , '', 'data13'],
-     *              ['data21', 'data22', null],
-     *          ];
+     *                         If a row is empty, it won't be added (i.e. not even as a blank row)
+     *                         Example: $dataRows = [
+     *                             ['data11', 12, , '', 'data13'],
+     *                             ['data21', 'data22', null, false],
+     *                         ];
      *
      * @return \Box\Spout\Writer\AbstractWriter
      * @throws \Box\Spout\Common\Exception\InvalidArgumentException If the input param is not valid

src/Spout/Writer/CSV.php

@@ -73,7 +73,7 @@ class CSV extends AbstractWriter
      */
     protected function addRowToWriter(array $dataRow)
     {
-        $wasWriteSuccessful = fputcsv($this->filePointer, $dataRow, $this->fieldDelimiter, $this->fieldEnclosure);
+        $wasWriteSuccessful = $this->globalFunctionsHelper->fputcsv($this->filePointer, $dataRow, $this->fieldDelimiter, $this->fieldEnclosure);
         if ($wasWriteSuccessful === false) {
             throw new IOException('Unable to write data');
         }

src/Spout/Writer/Helper/XLSX/CellHelper.php

@@ -34,4 +34,38 @@ class CellHelper
 
         return $cellIndex;
     }
+
+    /**
+     * @param $value
+     * @return bool Whether the given value is a non empty string
+     */
+    public static function isNonEmptyString($value)
+    {
+        return (gettype($value) === 'string' && $value !== '');
+    }
+
+    /**
+     * Returns whether the given value is numeric.
+     * A numeric value is from type "integer" or "double" ("float" is not returned by gettype).
+     *
+     * @param $value
+     * @return bool Whether the given value is numeric
+     */
+    public static function isNumeric($value)
+    {
+        $valueType = gettype($value);
+        return ($valueType === 'integer' || $valueType === 'double');
+    }
+
+    /**
+     * Returns whether the given value is boolean.
+     * "true"/"false" and 0/1 are not booleans.
+     *
+     * @param $value
+     * @return bool Whether the given value is boolean
+     */
+    public static function isBoolean($value)
+    {
+        return gettype($value) === 'boolean';
+    }
 }

src/Spout/Writer/Helper/XLSX/SharedStringsHelper.php

@@ -36,7 +36,7 @@ EOD;
      */
     public function __construct($xlFolder)
     {
-        $sharedStringsFilePath = $xlFolder . DIRECTORY_SEPARATOR . self::SHARED_STRINGS_FILE_NAME;
+        $sharedStringsFilePath = $xlFolder . '/' . self::SHARED_STRINGS_FILE_NAME;
         $this->sharedStringsFilePointer = fopen($sharedStringsFilePath, 'w');
 
         $this->throwIfSharedStringsFilePointerIsNotAvailable();

src/Spout/Writer/Helper/XLSX/ZipHelper.php

@@ -33,18 +33,30 @@ class ZipHelper
      */
     protected function addFolderToZip($zip, $folderPath)
     {
-        $folderRealPath = realpath($folderPath) . DIRECTORY_SEPARATOR;
+        $folderRealPath = $this->getNormalizedRealPath($folderPath) . '/';
         $itemIterator = new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($folderPath, \RecursiveDirectoryIterator::SKIP_DOTS), \RecursiveIteratorIterator::SELF_FIRST);
 
         foreach ($itemIterator as $itemInfo) {
-            $itemRealPath = realpath($itemInfo->getPathname());
+            $itemRealPath = $this->getNormalizedRealPath($itemInfo->getPathname());
             $itemLocalPath = str_replace($folderRealPath, '', $itemRealPath);
 
             if ($itemInfo->isFile()) {
-                $zip->addFile($itemInfo->getPathname(), $itemLocalPath);
+                $zip->addFile($itemRealPath, $itemLocalPath);
             } else if ($itemInfo->isDir()) {
                 $zip->addEmptyDir($itemLocalPath);
             }
         }
     }
+
+    /**
+     * Returns canonicalized absolute pathname, containing only forward slashes.
+     *
+     * @param string $path Path to normalize
+     * @return string Normalized and canonicalized path
+     */
+    protected function getNormalizedRealPath($path)
+    {
+        $realPath = realpath($path);
+        return str_replace(DIRECTORY_SEPARATOR, '/', $realPath);
+    }
 }

src/Spout/Writer/Internal/XLSX/Workbook.php

@@ -5,7 +5,6 @@ namespace Box\Spout\Writer\Internal\XLSX;
 use Box\Spout\Writer\Exception\SheetNotFoundException;
 use Box\Spout\Writer\Helper\XLSX\FileSystemHelper;
 use Box\Spout\Writer\Helper\XLSX\SharedStringsHelper;
-use Box\Spout\Writer\Helper\XLSX\ZipHelper;
 use Box\Spout\Writer\Sheet;
 
 /**
@@ -68,8 +67,8 @@ class Workbook
      */
     public function addNewSheet()
     {
-        $newSheetNumber = count($this->worksheets);
-        $sheet = new Sheet($newSheetNumber);
+        $newSheetIndex = count($this->worksheets);
+        $sheet = new Sheet($newSheetIndex);
 
         $worksheetFilesFolder = $this->fileSystemHelper->getXlWorksheetsFolder();
         $worksheet = new Worksheet($sheet, $worksheetFilesFolder, $this->sharedStringsHelper, $this->shouldUseInlineStrings);

src/Spout/Writer/Internal/XLSX/Worksheet.php

@@ -2,6 +2,7 @@
 
 namespace Box\Spout\Writer\Internal\XLSX;
 
+use Box\Spout\Common\Exception\InvalidArgumentException;
 use Box\Spout\Common\Exception\IOException;
 use Box\Spout\Writer\Helper\XLSX\CellHelper;
 
@@ -42,7 +43,8 @@ EOD;
 
     /**
      * @param \Box\Spout\Writer\Sheet $externalSheet The associated "external" sheet
-     * @param string $tempFolder Temporary folder where the files to create the XLSX will be stored
+     * @param string $worksheetFilesFolder Temporary folder where the files to create the XLSX will be stored
+     * @param \Box\Spout\Writer\Helper\XLSX\SharedStringsHelper $sharedStringsHelper Helper for shared strings
      * @param bool $shouldUseInlineStrings Whether inline or shared strings should be used
      * @throws \Box\Spout\Common\Exception\IOException If the sheet data file cannot be opened for writing
      */
@@ -54,7 +56,7 @@ EOD;
 
         $this->stringsEscaper = new \Box\Spout\Common\Escaper\XLSX();
 
-        $this->worksheetFilePath = $worksheetFilesFolder . DIRECTORY_SEPARATOR . strtolower($this->externalSheet->getName()) . '.xml';
+        $this->worksheetFilePath = $worksheetFilesFolder . '/' . strtolower($this->externalSheet->getName()) . '.xml';
         $this->startSheet();
     }
 
@@ -94,8 +96,8 @@ EOD;
      */
     public function getId()
     {
-        // sheet number is zero-based, while ID is 1-based
-        return $this->externalSheet->getSheetNumber() + 1;
+        // sheet index is zero-based, while ID is 1-based
+        return $this->externalSheet->getIndex() + 1;
     }
 
     /**
@@ -118,6 +120,7 @@ EOD;
      *          Example $dataRow = ['data1', 1234, null, '', 'data5'];
      * @return void
      * @throws \Box\Spout\Common\Exception\IOException If the data cannot be written
+     * @throws \Box\Spout\Common\Exception\InvalidArgumentException If a cell value's type is not supported
      */
     public function addRow($dataRow)
     {
@@ -131,19 +134,19 @@ EOD;
             $columnIndex = CellHelper::getCellIndexFromColumnIndex($cellNumber);
             $data .= '            <c r="' . $columnIndex . $rowIndex . '"';
 
-            if (empty($cellValue)) {
+            if (CellHelper::isNonEmptyString($cellValue)) {
+                if ($this->shouldUseInlineStrings) {
+                    $data .= ' t="inlineStr"><is><t>' . $this->stringsEscaper->escape($cellValue) . '</t></is></c>' . PHP_EOL;
+                } else {
+                    $sharedStringId = $this->sharedStringsHelper->writeString($cellValue);
+                    $data .= ' t="s"><v>' . $sharedStringId . '</v></c>' . PHP_EOL;
+                }
+            } else if (CellHelper::isNumeric($cellValue) || CellHelper::isBoolean($cellValue)) {
+                $data .= '><v>' . $cellValue . '</v></c>' . PHP_EOL;
+            } else if (empty($cellValue)) {
                 $data .= '/>' . PHP_EOL;
             } else {
-                if (is_numeric($cellValue)) {
-                    $data .= '><v>' . $cellValue . '</v></c>' . PHP_EOL;
-                } else {
-                    if ($this->shouldUseInlineStrings) {
-                        $data .= ' t="inlineStr"><is><t>' . $this->stringsEscaper->escape($cellValue) . '</t></is></c>' . PHP_EOL;
-                    } else {
-                        $sharedStringId = $this->sharedStringsHelper->writeString($cellValue);
-                        $data .= ' t="s"><v>' . $sharedStringId . '</v></c>' . PHP_EOL;
-                    }
-                }
+                throw new InvalidArgumentException('Trying to add a value with an unsupported type: ' . gettype($cellValue));
             }
 
             $cellNumber++;

src/Spout/Writer/Sheet.php

@@ -12,27 +12,27 @@ class Sheet
 {
     const DEFAULT_SHEET_NAME_PREFIX = 'Sheet';
 
-    /** @var int Number of the sheet, based on order of creation (zero-based) */
-    protected $sheetNumber;
+    /** @var int Index of the sheet, based on order of creation (zero-based) */
+    protected $index;
 
     /** @var string Name of the sheet */
     protected $name;
 
     /**
-     * @param $sheetNumber Number of the sheet, based on order of creation (zero-based)
+     * @param int $sheetIndex Index of the sheet, based on order of creation (zero-based)
      */
-    function __construct($sheetNumber)
+    function __construct($sheetIndex)
     {
-        $this->sheetNumber = $sheetNumber;
-        $this->name = self::DEFAULT_SHEET_NAME_PREFIX . ($sheetNumber + 1);
+        $this->index = $sheetIndex;
+        $this->name = self::DEFAULT_SHEET_NAME_PREFIX . ($sheetIndex + 1);
     }
 
     /**
-     * @return int Number of the sheet, based on order of creation (zero-based)
+     * @return int Index of the sheet, based on order of creation (zero-based)
      */
-    public function getSheetNumber()
+    public function getIndex()
     {
-        return $this->sheetNumber;
+        return $this->index;
     }
 
     /**
@@ -42,4 +42,14 @@ class Sheet
     {
         return $this->name;
     }
+
+    /**
+     * @param string $name Name of the sheet
+     * @return \Box\Spout\Writer\Sheet
+     */
+    public function setName($name)
+    {
+        $this->name = $name;
+        return $this;
+    }
 }

tests/Spout/Reader/Helper/XLSX/CellHelperTest.php

@@ -0,0 +1,60 @@
+<?php
+
+namespace Box\Spout\Reader\Helper\XLSX;
+
+/**
+ * Class CellHelperTest
+ *
+ * @package Box\Spout\Reader\Helper\XLSX
+ */
+class CellHelperTest extends \PHPUnit_Framework_TestCase
+{
+    /**
+     * @return void
+     */
+    public function testFillMissingArrayIndexes()
+    {
+        $arrayToFill = [1 => 1, 3 => 3];
+        $filledArray = CellHelper::fillMissingArrayIndexes($arrayToFill, 'FILL');
+
+        $expectedFilledArray = ['FILL', 1, 'FILL', 3];
+        $this->assertEquals($expectedFilledArray, $filledArray);
+    }
+
+    /**
+     * @return array
+     */
+    public function dataProviderForTestGetColumnIndexFromCellIndex()
+    {
+        return [
+            ['A1', 0],
+            ['Z3', 25],
+            ['AA5', 26],
+            ['AB24', 27],
+            ['BC5', 54],
+            ['BCZ99', 1455],
+        ];
+    }
+
+    /**
+     * @dataProvider dataProviderForTestGetColumnIndexFromCellIndex
+     *
+     * @param string $cellIndex
+     * @param int $expectedColumnIndex
+     * @return void
+     */
+    public function testGetColumnIndexFromCellIndex($cellIndex, $expectedColumnIndex)
+    {
+        $this->assertEquals($expectedColumnIndex, CellHelper::getColumnIndexFromCellIndex($cellIndex));
+    }
+
+    /**
+     * @expectedException \Box\Spout\Common\Exception\InvalidArgumentException
+     *
+     * @return void
+     */
+    public function testGetColumnIndexFromCellIndexShouldThrowIfInvalidCellIndex()
+    {
+        CellHelper::getColumnIndexFromCellIndex('InvalidCellIndex');
+    }
+}

tests/Spout/Reader/Helper/XLSX/SharedStringsHelperTest.php

@@ -46,7 +46,7 @@ class SharedStringsHelperTest extends \PHPUnit_Framework_TestCase
         $this->assertEquals(1, count($filesInTempFolder), 'One temp file should have been created in the temp folder.');
 
         $tempFileContents = file_get_contents($filesInTempFolder[0]);
-        $tempFileContentsPerLine = explode("\n", $tempFileContents);
+        $tempFileContentsPerLine = explode(PHP_EOL, $tempFileContents);
 
         $this->assertEquals('s1--A1', $tempFileContentsPerLine[0]);
         $this->assertEquals('s1--E5', $tempFileContentsPerLine[24]);
@@ -96,4 +96,23 @@ class SharedStringsHelperTest extends \PHPUnit_Framework_TestCase
         $sharedString = $this->sharedStringsHelper->getStringAtIndex(24);
         $this->assertEquals('s1--E5', $sharedString);
     }
+
+    /**
+     * @return void
+     */
+    public function testGetStringAtIndexShouldWorkWithMultilineStrings()
+    {
+        $resourcePath = $this->getResourcePath('one_sheet_with_shared_multiline_strings.xlsx');
+        $sharedStringsHelper = new SharedStringsHelper($resourcePath);
+
+        $sharedStringsHelper->extractSharedStrings();
+
+        $sharedString = $sharedStringsHelper->getStringAtIndex(0);
+        $this->assertEquals("s1\nA1", $sharedString);
+
+        $sharedString = $sharedStringsHelper->getStringAtIndex(24);
+        $this->assertEquals("s1\nE5", $sharedString);
+
+        $sharedStringsHelper->cleanup();
+    }
 }

tests/Spout/Reader/ReaderFactoryTest.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace Box\Spout\Reader;
+
+/**
+ * Class ReaderFactoryTest
+ *
+ * @package Box\Spout\Writer
+ */
+class ReaderFactoryTest extends \PHPUnit_Framework_TestCase
+{
+    /**
+     * @expectedException \Box\Spout\Common\Exception\UnsupportedTypeException
+     *
+     * @return void
+     */
+    public function testCreateReaderShouldThrowWithUnsupportedType()
+    {
+        ReaderFactory::create('unsupportedType');
+    }
+}

tests/Spout/Reader/SheetTest.php

@@ -0,0 +1,52 @@
+<?php
+
+namespace Box\Spout\Reader;
+
+use Box\Spout\Common\Type;
+use Box\Spout\TestUsingResource;
+
+/**
+ * Class SheetTest
+ *
+ * @package Box\Spout\Reader
+ */
+class SheetTest extends \PHPUnit_Framework_TestCase
+{
+    use TestUsingResource;
+
+    /**
+     * @return void
+     */
+    public function testNextSheetShouldReturnCorrectSheetInfos()
+    {
+        $sheets = $this->openFileAndReturnSheets('two_sheets_with_custom_names.xlsx');
+
+        $this->assertEquals('CustomName1', $sheets[0]->getName());
+        $this->assertEquals(0, $sheets[0]->getIndex());
+        $this->assertEquals(1, $sheets[0]->getId());
+
+        $this->assertEquals('CustomName2', $sheets[1]->getName());
+        $this->assertEquals(1, $sheets[1]->getIndex());
+        $this->assertEquals(2, $sheets[1]->getId());
+    }
+
+    /**
+     * @param string $fileName
+     * @return Sheet[]
+     */
+    private function openFileAndReturnSheets($fileName)
+    {
+        $resourcePath = $this->getResourcePath($fileName);
+        $reader = ReaderFactory::create(Type::XLSX);
+        $reader->open($resourcePath);
+
+        $sheets = [];
+        while ($reader->hasNextSheet()) {
+            $sheets[] = $reader->nextSheet();
+        }
+
+        $reader->close();
+
+        return $sheets;
+    }
+}

tests/Spout/Reader/XLSXTest.php

@@ -38,6 +38,37 @@ class XLSXTest extends \PHPUnit_Framework_TestCase
         $this->getAllRowsForFile($filePath);
     }
 
+    /**
+     * @expectedException \Box\Spout\Reader\Exception\ReaderNotOpenedException
+     *
+     * @return void
+     */
+    public function testHasNextSheetShouldThrowExceptionIfReaderNotOpened()
+    {
+        $reader = ReaderFactory::create(Type::XLSX);
+        $reader->hasNextSheet();
+    }
+
+    /**
+     * @expectedException \Box\Spout\Reader\Exception\EndOfWorksheetsReachedException
+     *
+     * @return void
+     */
+    public function testNextSheetShouldThrowExceptionIfNoMoreSheetsToRead()
+    {
+        $fileName = 'one_sheet_with_shared_strings.xlsx';
+        $resourcePath = $this->getResourcePath($fileName);
+
+        $reader = ReaderFactory::create(Type::XLSX);
+        $reader->open($resourcePath);
+
+        while ($reader->hasNextSheet()) {
+            $reader->nextSheet();
+        }
+
+        $reader->nextSheet();
+    }
+
     /**
      * @return array
      */
@@ -69,6 +100,43 @@ class XLSXTest extends \PHPUnit_Framework_TestCase
         }
     }
 
+    /**
+     * @return void
+     */
+    public function testReadShouldSupportFilesWithoutSharedStringsFile()
+    {
+        $allRows = $this->getAllRowsForFile('sheet_with_no_shared_strings_file.xlsx');
+
+        $expectedRows = [
+            [10, 11],
+            [20, 21],
+        ];
+        $this->assertEquals($expectedRows, $allRows);
+    }
+
+    /**
+     * @return void
+     */
+    public function testReadShouldSupportAllCellTypes()
+    {
+        $allRows = $this->getAllRowsForFile('sheet_with_all_cell_types.xlsx');
+
+        $expectedRows = [
+            [
+                's1--A1', 's1--A2',
+                false, true,
+                \DateTime::createFromFormat('Y-m-d H:i:s', '2015-06-03 13:21:58'),
+                \DateTime::createFromFormat('Y-m-d H:i:s', '2015-06-01 00:00:00'),
+                10, 10.43,
+                null,
+                'weird string', // valid 'str' string
+                null, // invalid date
+            ],
+            ['', '', '', '', '', '', '', '', ''],
+        ];
+        $this->assertEquals($expectedRows, $allRows);
+    }
+
     /**
      * @return void
      */
@@ -140,6 +208,32 @@ class XLSXTest extends \PHPUnit_Framework_TestCase
         $this->assertEquals($expectedRows, $allRows);
     }
 
+    /**
+     * @return void
+     */
+    public function testReadShouldSupportEmptySharedString()
+    {
+        $allRows = $this->getAllRowsForFile('sheet_with_empty_shared_string.xlsx');
+
+        $expectedRows = [
+            ['s1--A1', '', 's1--C1'],
+        ];
+        $this->assertEquals($expectedRows, $allRows);
+    }
+
+    /**
+     * @return void
+     */
+    public function testReadShouldPreserveSpaceIfSpecified()
+    {
+        $allRows = $this->getAllRowsForFile('sheet_with_preserve_space_shared_strings.xlsx');
+
+        $expectedRows = [
+            ['  s1--A1', 's1--B1  ', '  s1--C1  '],
+        ];
+        $this->assertEquals($expectedRows, $allRows);
+    }
+
     /**
      * @return void
      */
@@ -158,7 +252,7 @@ class XLSXTest extends \PHPUnit_Framework_TestCase
     {
         $allRows = $this->getAllRowsForFile('billion_laughs_test_file.xlsx');
 
-        $expectedMaxMemoryUsage = 10 * 1024 * 1024; // 10MB
+        $expectedMaxMemoryUsage = 30 * 1024 * 1024; // 30MB
         $this->assertLessThan($expectedMaxMemoryUsage, memory_get_peak_usage(true), 'Entities should not be expanded and therefore consume all the memory.');
 
         $expectedFirstRow = ['s1--A1', 's1--B1', 's1--C1', 's1--D1', 's1--E1'];
@@ -174,6 +268,21 @@ class XLSXTest extends \PHPUnit_Framework_TestCase
         $this->assertEquals([], $allRows, 'Sheet with no cells should be correctly processed.');
     }
 
+    /**
+     * @return void
+     */
+    public function testReadShouldSkipFormulas()
+    {
+        $allRows = $this->getAllRowsForFile('sheet_with_formulas.xlsx');
+
+        $expectedRows = [
+            ['val1', 'val2', 'total1', 'total2'],
+            [10, 20, 30, 21],
+            [11, 21, 32, 41],
+        ];
+        $this->assertEquals($expectedRows, $allRows);
+    }
+
     /**
      * @param string $fileName
      * @return array All the read rows the given file

tests/Spout/Writer/CSVTest.php

@@ -49,6 +49,16 @@ class CSVTest extends \PHPUnit_Framework_TestCase
         $writer->close();
     }
 
+    /**
+     * @expectedException \Box\Spout\Common\Exception\InvalidArgumentException
+     */
+    public function testAddRowsShouldThrowExceptionIfRowsAreNotArrayOfArrays()
+    {
+        $writer = WriterFactory::create(Type::CSV);
+        $writer->addRows(['csv--11', 'csv--12']);
+        $writer->close();
+    }
+
     /**
      * @return void
      */
@@ -76,6 +86,22 @@ class CSVTest extends \PHPUnit_Framework_TestCase
         $this->assertEquals('csv--11,,csv--13', $writtenContent, 'The null values should be replaced by empty values');
     }
 
+    /**
+     * @return void
+     */
+    public function testWriteShouldSkipEmptyRows()
+    {
+        $allRows = [
+            ['csv--11', 'csv--12'],
+            [],
+            ['csv--31', 'csv--32'],
+        ];
+        $writtenContent = $this->writeToCsvFileAndReturnWrittenContent($allRows, 'csv_with_empty_rows.csv');
+        $writtenContent = $this->trimWrittenContent($writtenContent);
+
+        $this->assertEquals("csv--11,csv--12\ncsv--31,csv--32", $writtenContent, 'Empty rows should be skipped');
+    }
+
     /**
      * @return void
      */
@@ -135,6 +161,6 @@ class CSVTest extends \PHPUnit_Framework_TestCase
     private function trimWrittenContent($writtenContent)
     {
         // remove line feeds and UTF-8 BOM
-        return trim($writtenContent, "\n" . CSV::UTF8_BOM);
+        return trim($writtenContent, PHP_EOL . CSV::UTF8_BOM);
     }
 }

tests/Spout/Writer/Helper/XLSX/CellHelperTest.php

@@ -34,4 +34,62 @@ class CellHelperTest extends \PHPUnit_Framework_TestCase
     {
         $this->assertEquals($expectedCellIndex, CellHelper::getCellIndexFromColumnIndex($columnIndex));
     }
+
+    /**
+     * @return array
+     */
+    public function testIsNonEmptyString()
+    {
+        $this->assertTrue(CellHelper::isNonEmptyString("string"));
+
+        $this->assertFalse(CellHelper::isNonEmptyString(""));
+        $this->assertFalse(CellHelper::isNonEmptyString(0));
+        $this->assertFalse(CellHelper::isNonEmptyString(1));
+        $this->assertFalse(CellHelper::isNonEmptyString(true));
+        $this->assertFalse(CellHelper::isNonEmptyString(false));
+        $this->assertFalse(CellHelper::isNonEmptyString(["string"]));
+        $this->assertFalse(CellHelper::isNonEmptyString(new \stdClass()));
+        $this->assertFalse(CellHelper::isNonEmptyString(null));
+    }
+
+    /**
+     * @return array
+     */
+    public function testIsNumeric()
+    {
+        $this->assertTrue(CellHelper::isNumeric(0));
+        $this->assertTrue(CellHelper::isNumeric(10));
+        $this->assertTrue(CellHelper::isNumeric(10.1));
+        $this->assertTrue(CellHelper::isNumeric(10.10000000000000000000001));
+        $this->assertTrue(CellHelper::isNumeric(0x539));
+        $this->assertTrue(CellHelper::isNumeric(02471));
+        $this->assertTrue(CellHelper::isNumeric(0b10100111001));
+        $this->assertTrue(CellHelper::isNumeric(1337e0));
+
+        $this->assertFalse(CellHelper::isNumeric("0"));
+        $this->assertFalse(CellHelper::isNumeric("42"));
+        $this->assertFalse(CellHelper::isNumeric(true));
+        $this->assertFalse(CellHelper::isNumeric([2]));
+        $this->assertFalse(CellHelper::isNumeric(new \stdClass()));
+        $this->assertFalse(CellHelper::isNumeric(null));
+    }
+
+    /**
+     * @return array
+     */
+    public function testIsBoolean()
+    {
+        $this->assertTrue(CellHelper::isBoolean(true));
+        $this->assertTrue(CellHelper::isBoolean(false));
+
+        $this->assertFalse(CellHelper::isBoolean(0));
+        $this->assertFalse(CellHelper::isBoolean(1));
+        $this->assertFalse(CellHelper::isBoolean("0"));
+        $this->assertFalse(CellHelper::isBoolean("1"));
+        $this->assertFalse(CellHelper::isBoolean("true"));
+        $this->assertFalse(CellHelper::isBoolean("false"));
+        $this->assertFalse(CellHelper::isBoolean([true]));
+        $this->assertFalse(CellHelper::isBoolean(new \stdClass()));
+        $this->assertFalse(CellHelper::isBoolean(null));
+    }
 }

tests/Spout/Writer/SheetTest.php

@@ -17,13 +17,13 @@ class SheetTest extends \PHPUnit_Framework_TestCase
     /**
      * @return void
      */
-    public function testGetSheetNumber()
+    public function testGetSheetIndex()
     {
-        $sheets = $this->writeDataAndReturnSheets('test_get_sheet_number.xlsx');
+        $sheets = $this->writeDataAndReturnSheets('test_get_sheet_index.xlsx');
 
         $this->assertEquals(2, count($sheets), '2 sheets should have been created');
-        $this->assertEquals(0, $sheets[0]->getSheetNumber(), 'The first sheet should be number 0');
-        $this->assertEquals(1, $sheets[1]->getSheetNumber(), 'The second sheet should be number 1');
+        $this->assertEquals(0, $sheets[0]->getIndex(), 'The first sheet should be index 0');
+        $this->assertEquals(1, $sheets[1]->getIndex(), 'The second sheet should be index 1');
     }
 
     /**
@@ -38,6 +38,28 @@ class SheetTest extends \PHPUnit_Framework_TestCase
         $this->assertEquals('Sheet2', $sheets[1]->getName(), 'Invalid name for the second sheet');
     }
 
+    /**
+     * @return void
+     */
+    public function testSetSheetNameShouldCreateSheetWithCustomName()
+    {
+        $fileName = 'test_set_name_should_create_sheet_with_custom_name.xlsx';
+        $this->createGeneratedFolderIfNeeded($fileName);
+        $resourcePath = $this->getGeneratedResourcePath($fileName);
+
+        $writer = WriterFactory::create(Type::XLSX);
+        $writer->openToFile($resourcePath);
+
+        $customSheetName = 'CustomName';
+        $sheet = $writer->getCurrentSheet();
+        $sheet->setName($customSheetName);
+
+        $writer->addRow(['xlsx--11', 'xlsx--12']);
+        $writer->close();
+
+        $this->assertSheetNameEquals($customSheetName, $resourcePath, "The sheet name should have been changed to '$customSheetName'");
+    }
+
     /**
      * @param string $fileName
      * @return Sheet[]
@@ -59,4 +81,18 @@ class SheetTest extends \PHPUnit_Framework_TestCase
 
         return $writer->getSheets();
     }
+
+    /**
+     * @param string $expectedName
+     * @param string $resourcePath
+     * @param string $message
+     * @return void
+     */
+    private function assertSheetNameEquals($expectedName, $resourcePath, $message = '')
+    {
+        $pathToWorkbookFile = $resourcePath . '#xl/workbook.xml';
+        $xmlContents = file_get_contents('zip://' . $pathToWorkbookFile);
+
+        $this->assertContains('<sheet name="' . $expectedName . '"', $xmlContents, $message);
+    }
 }

tests/Spout/Writer/WriterFactoryTest.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace Box\Spout\Writer;
+
+/**
+ * Class WriterFactoryTest
+ *
+ * @package Box\Spout\Writer
+ */
+class WriterFactoryTest extends \PHPUnit_Framework_TestCase
+{
+    /**
+     * @expectedException \Box\Spout\Common\Exception\UnsupportedTypeException
+     *
+     * @return void
+     */
+    public function testCreateWriterShouldThrowWithUnsupportedType()
+    {
+        WriterFactory::create('unsupportedType');
+    }
+}

tests/Spout/Writer/XLSXTest.php

@@ -49,6 +49,19 @@ class XLSXTest extends \PHPUnit_Framework_TestCase
         $writer->close();
     }
 
+    /**
+     * @expectedException \Box\Spout\Common\Exception\InvalidArgumentException
+     */
+    public function testAddRowShouldThrowExceptionIfUnsupportedDataTypePassedIn()
+    {
+        $fileName = 'test_add_row_should_throw_exception_if_unsupported_data_type_passed_in.xlsx';
+        $dataRows = [
+            [new \stdClass()],
+        ];
+
+        $this->writeToXLSXFile($dataRows, $fileName);
+    }
+
     /**
      * @return void
      */
@@ -96,7 +109,7 @@ class XLSXTest extends \PHPUnit_Framework_TestCase
      */
     public function testAddRowShouldWriteGivenDataToSheetUsingInlineStrings()
     {
-        $fileName = 'test_add_row_should_write_given_data_to_sheet.xlsx';
+        $fileName = 'test_add_row_should_write_given_data_to_sheet_using_inline_strings.xlsx';
         $dataRows = [
             ['xlsx--11', 'xlsx--12'],
             ['xlsx--21', 'xlsx--22', 'xlsx--23'],
@@ -106,7 +119,7 @@ class XLSXTest extends \PHPUnit_Framework_TestCase
 
         foreach ($dataRows as $dataRow) {
             foreach ($dataRow as $cellValue) {
-                $this->assertInlineStringWasWrittenToSheet($fileName, 1, $cellValue);
+                $this->assertInlineDataWasWrittenToSheet($fileName, 1, $cellValue);
             }
         }
     }
@@ -116,7 +129,7 @@ class XLSXTest extends \PHPUnit_Framework_TestCase
      */
     public function testAddRowShouldWriteGivenDataToTwoSheetUsingInlineStrings()
     {
-        $fileName = 'test_add_row_should_write_given_data_to_sheet.xlsx';
+        $fileName = 'test_add_row_should_write_given_data_to_two_sheets_using_inline_strings.xlsx';
         $dataRows = [
             ['xlsx--11', 'xlsx--12'],
             ['xlsx--21', 'xlsx--22', 'xlsx--23'],
@@ -128,7 +141,7 @@ class XLSXTest extends \PHPUnit_Framework_TestCase
         for ($i = 1; $i <= $numSheets; $i++) {
             foreach ($dataRows as $dataRow) {
                 foreach ($dataRow as $cellValue) {
-                    $this->assertInlineStringWasWrittenToSheet($fileName, $numSheets, $cellValue);
+                    $this->assertInlineDataWasWrittenToSheet($fileName, $numSheets, $cellValue);
                 }
             }
         }
@@ -139,7 +152,7 @@ class XLSXTest extends \PHPUnit_Framework_TestCase
      */
     public function testAddRowShouldWriteGivenDataToSheetUsingSharedStrings()
     {
-        $fileName = 'test_add_row_should_write_given_data_to_sheet.xlsx';
+        $fileName = 'test_add_row_should_write_given_data_to_sheet_using_shared_strings.xlsx';
         $dataRows = [
             ['xlsx--11', 'xlsx--12'],
             ['xlsx--21', 'xlsx--22', 'xlsx--23'],
@@ -159,7 +172,7 @@ class XLSXTest extends \PHPUnit_Framework_TestCase
      */
     public function testAddRowShouldWriteGivenDataToTwoSheetUsingSharedStrings()
     {
-        $fileName = 'test_add_row_should_write_given_data_to_two_sheet_using_shared_strings.xlsx';
+        $fileName = 'test_add_row_should_write_given_data_to_two_sheets_using_shared_strings.xlsx';
         $dataRows = [
             ['xlsx--11', 'xlsx--12'],
             ['xlsx--21', 'xlsx--22', 'xlsx--23'],
@@ -177,6 +190,24 @@ class XLSXTest extends \PHPUnit_Framework_TestCase
         }
     }
 
+    /**
+     * @return void
+     */
+    public function testAddRowShouldSupportMultipleTypesOfData()
+    {
+        $fileName = 'test_add_row_should_support_multiple_types_of_data.xlsx';
+        $dataRows = [
+            ['xlsx--11', true, '', 0, 10.2, null],
+        ];
+
+        $this->writeToXLSXFile($dataRows, $fileName, $shouldUseInlineStrings = false);
+
+        $this->assertSharedStringWasWritten($fileName, 'xlsx--11');
+        $this->assertInlineDataWasWrittenToSheet($fileName, 1, 1); // true is converted to 1
+        $this->assertInlineDataWasWrittenToSheet($fileName, 1, 0);
+        $this->assertInlineDataWasWrittenToSheet($fileName, 1, 10.2);
+    }
+
     /**
      * @return void
      */
@@ -219,17 +250,17 @@ class XLSXTest extends \PHPUnit_Framework_TestCase
 
         foreach ($dataRowsSheet1 as $dataRow) {
             foreach ($dataRow as $cellValue) {
-                $this->assertInlineStringWasWrittenToSheet($fileName, 1, $cellValue, 'Data should have been written in Sheet 1');
+                $this->assertInlineDataWasWrittenToSheet($fileName, 1, $cellValue, 'Data should have been written in Sheet 1');
             }
         }
         foreach ($dataRowsSheet2 as $dataRow) {
             foreach ($dataRow as $cellValue) {
-                $this->assertInlineStringWasWrittenToSheet($fileName, 2, $cellValue, 'Data should have been written in Sheet 2');
+                $this->assertInlineDataWasWrittenToSheet($fileName, 2, $cellValue, 'Data should have been written in Sheet 2');
             }
         }
         foreach ($dataRowsSheet1Again as $dataRow) {
             foreach ($dataRow as $cellValue) {
-                $this->assertInlineStringWasWrittenToSheet($fileName, 1, $cellValue, 'Data should have been written in Sheet 1');
+                $this->assertInlineDataWasWrittenToSheet($fileName, 1, $cellValue, 'Data should have been written in Sheet 1');
             }
         }
     }
@@ -252,8 +283,8 @@ class XLSXTest extends \PHPUnit_Framework_TestCase
         $writer = $this->writeToXLSXFile($dataRows, $fileName, true, $shouldCreateSheetsAutomatically = true);
         $this->assertEquals(2, count($writer->getSheets()), '2 sheets should have been created.');
 
-        $this->assertInlineStringWasNotWrittenToSheet($fileName, 1, 'xlsx--sheet2--11');
-        $this->assertInlineStringWasWrittenToSheet($fileName, 2, 'xlsx--sheet2--11');
+        $this->assertInlineDataWasNotWrittenToSheet($fileName, 1, 'xlsx--sheet2--11');
+        $this->assertInlineDataWasWrittenToSheet($fileName, 2, 'xlsx--sheet2--11');
 
         \ReflectionHelper::reset();
     }
@@ -276,7 +307,7 @@ class XLSXTest extends \PHPUnit_Framework_TestCase
         $writer = $this->writeToXLSXFile($dataRows, $fileName, true, $shouldCreateSheetsAutomatically = false);
         $this->assertEquals(1, count($writer->getSheets()), 'Only 1 sheet should have been created.');
 
-        $this->assertInlineStringWasNotWrittenToSheet($fileName, 1, 'xlsx--sheet1--31');
+        $this->assertInlineDataWasNotWrittenToSheet($fileName, 1, 'xlsx--sheet1--31');
 
         \ReflectionHelper::reset();
     }
@@ -293,8 +324,8 @@ class XLSXTest extends \PHPUnit_Framework_TestCase
 
         $this->writeToXLSXFile($dataRows, $fileName);
 
-        $this->assertInlineStringWasWrittenToSheet($fileName, 1, 'I&#039;m in &quot;great&quot; mood', 'Quotes should be escaped');
-        $this->assertInlineStringWasWrittenToSheet($fileName, 1, 'This &lt;must&gt; be escaped &amp; tested', '<, > and & should be escaped');
+        $this->assertInlineDataWasWrittenToSheet($fileName, 1, 'I&#039;m in &quot;great&quot; mood', 'Quotes should be escaped');
+        $this->assertInlineDataWasWrittenToSheet($fileName, 1, 'This &lt;must&gt; be escaped &amp; tested', '<, > and & should be escaped');
     }
 
     /**
@@ -309,10 +340,9 @@ class XLSXTest extends \PHPUnit_Framework_TestCase
 
         $this->writeToXLSXFile($dataRows, $fileName);
 
-        $this->assertInlineStringWasWrittenToSheet($fileName, 1, 'control&#039;s _x0015_ &quot;character&quot;');
+        $this->assertInlineDataWasWrittenToSheet($fileName, 1, 'control&#039;s _x0015_ &quot;character&quot;');
     }
 
-
     /**
      * @param array $allRows
      * @param string $fileName
@@ -370,34 +400,34 @@ class XLSXTest extends \PHPUnit_Framework_TestCase
 
     /**
      * @param string $fileName
-     * @param int $sheetNumber
-     * @param string $inlineString
+     * @param int $sheetIndex
+     * @param mixed $inlineData
      * @param string $message
      * @return void
      */
-    private function assertInlineStringWasWrittenToSheet($fileName, $sheetNumber, $inlineString, $message = '')
+    private function assertInlineDataWasWrittenToSheet($fileName, $sheetIndex, $inlineData, $message = '')
     {
         $resourcePath = $this->getGeneratedResourcePath($fileName);
-        $pathToSheetFile = $resourcePath . '#xl/worksheets/sheet' . $sheetNumber . '.xml';
+        $pathToSheetFile = $resourcePath . '#xl/worksheets/sheet' . $sheetIndex . '.xml';
         $xmlContents = file_get_contents('zip://' . $pathToSheetFile);
 
-        $this->assertContains($inlineString, $xmlContents, $message);
+        $this->assertContains((string)$inlineData, $xmlContents, $message);
     }
 
     /**
      * @param string $fileName
-     * @param int $sheetNumber
-     * @param string $inlineString
+     * @param int $sheetIndex
+     * @param mixed $inlineData
      * @param string $message
      * @return void
      */
-    private function assertInlineStringWasNotWrittenToSheet($fileName, $sheetNumber, $inlineString, $message = '')
+    private function assertInlineDataWasNotWrittenToSheet($fileName, $sheetIndex, $inlineData, $message = '')
     {
         $resourcePath = $this->getGeneratedResourcePath($fileName);
-        $pathToSheetFile = $resourcePath . '#xl/worksheets/sheet' . $sheetNumber . '.xml';
+        $pathToSheetFile = $resourcePath . '#xl/worksheets/sheet' . $sheetIndex . '.xml';
         $xmlContents = file_get_contents('zip://' . $pathToSheetFile);
 
-        $this->assertNotContains($inlineString, $xmlContents, $message);
+        $this->assertNotContains((string)$inlineData, $xmlContents, $message);
     }
 
     /**