<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
* OpenDocument Spreadsheet import plugin for phpMyAdmin
*
* @todo Pretty much everything
* @todo Importing of accented characters seems to fail
* @package PhpMyAdmin-Import
* @subpackage ODS
*/
if (! defined('PHPMYADMIN')) {
exit;
}

/**
* We need way to disable external XML entities processing.
*/
if (! function_exists('libxml_disable_entity_loader')) {
$GLOBALS['skip_import'] = true;
return;
}

/* Get the import interface */
require_once 'libraries/plugins/ImportPlugin.class.php';

/**
* Handles the import for the ODS format
*
* @package PhpMyAdmin-Import
* @subpackage ODS
*/
class ImportOds extends ImportPlugin
{
/**
* Constructor
*/
public function __construct()
{
$this->setProperties();
}

/**
* Sets the import plugin properties.
* Called in the constructor.
*
* @return void
*/
protected function setProperties()
{
$props = 'libraries/properties/';
include_once "$props/plugins/ImportPluginProperties.class.php";
include_once "$props/options/groups/OptionsPropertyRootGroup.class.php";
include_once "$props/options/groups/OptionsPropertyMainGroup.class.php";
include_once "$props/options/items/BoolPropertyItem.class.php";

$importPluginProperties = new ImportPluginProperties();
$importPluginProperties->setText('OpenDocument Spreadsheet');
$importPluginProperties->setExtension('ods');
$importPluginProperties->setOptionsText(__('Options'));

// create the root group that will be the options field for
// $importPluginProperties
// this will be shown as "Format specific options"
$importSpecificOptions = new OptionsPropertyRootGroup();
$importSpecificOptions->setName("Format Specific Options");

// general options main group
$generalOptions = new OptionsPropertyMainGroup();
$generalOptions->setName("general_opts");
// create primary items and add them to the group
$leaf = new BoolPropertyItem();
$leaf->setName("col_names");
$leaf->setText(
__(
'The first line of the file contains the table column names'
. ' <i>(if this is unchecked, the first line will become part'
. ' of the data)</i>'
)
);
$generalOptions->addProperty($leaf);
$leaf = new BoolPropertyItem();
$leaf->setName("empty_rows");
$leaf->setText(__('Do not import empty rows'));
$generalOptions->addProperty($leaf);
$leaf = new BoolPropertyItem();
$leaf->setName("recognize_percentages");
$leaf->setText(
__(
'Import percentages as proper decimals <i>(ex. 12.00% to .12)</i>'
)
);
$generalOptions->addProperty($leaf);
$leaf = new BoolPropertyItem();
$leaf->setName("recognize_currency");
$leaf->setText(__('Import currencies <i>(ex. $5.00 to 5.00)</i>'));
$generalOptions->addProperty($leaf);

// add the main group to the root group
$importSpecificOptions->addProperty($generalOptions);

// set the options for the import plugin property item
$importPluginProperties->setOptions($importSpecificOptions);
$this->properties = $importPluginProperties;
}

/**
* This method is called when any PluginManager to which the observer
* is attached calls PluginManager::notify()
*
* @param SplSubject $subject The PluginManager notifying the observer
* of an update.
*
* @return void
*/
public function update (SplSubject $subject)
{
}

/**
* Handles the whole import logic
*
* @return void
*/
public function doImport()
{
global $db, $error, $timeout_passed, $finished;

$i = 0;
$len = 0;
$buffer = "";

/**
* Read in the file via PMA_importGetNextChunk so that
* it can process compressed files
*/
while (! ($finished && $i >= $len) && ! $error && ! $timeout_passed) {
$data = PMA_importGetNextChunk();
if ($data === false) {
/* subtract data we didn't handle yet and stop processing */
$offset -= strlen($buffer);
break;
} elseif ($data === true) {
/* Handle rest of buffer */
} else {
/* Append new data to buffer */
$buffer .= $data;
unset($data);
}
}

unset($data);

/**
* Disable loading of external XML entities.
*/
libxml_disable_entity_loader();

/**
* Load the XML string
*
* The option LIBXML_COMPACT is specified because it can
* result in increased performance without the need to
* alter the code in any way. It's basically a freebee.
*/
$xml = simplexml_load_string($buffer, "SimpleXMLElement", LIBXML_COMPACT);

unset($buffer);

if ($xml === false) {
$sheets = array();
$message = PMA_Message::error(
__(
'The XML file specified was either malformed or incomplete.'
. ' Please correct the issue and try again.'
)
);
$error = true;
} else {
$root = $xml->children('office', true)->{'body'}->{'spreadsheet'};
if (empty($root)) {
$sheets = array();
$message = PMA_Message::error(
__('Could not parse OpenDocument Spreadsheet!')
);
$error = true;
} else {
$sheets = $root->children('table', true);
}
}

$tables = array();

$max_cols = 0;

$row_count = 0;
$col_count = 0;
$col_names = array();

$tempRow = array();
$tempRows = array();
$rows = array();

/* Iterate over tables */
foreach ($sheets as $sheet) {
$col_names_in_first_row = isset($_REQUEST['ods_col_names']);

/* Iterate over rows */
foreach ($sheet as $row) {
$type = $row->getName();
if (! strcmp('table-row', $type)) {
/* Iterate over columns */
foreach ($row as $cell) {
$text = $cell->children('text', true);
$cell_attrs = $cell->attributes('office', true);

if (count($text) != 0) {
$attr = $cell->attributes('table', true);
$num_repeat = (int) $attr['number-columns-repeated'];
$num_iterations = $num_repeat ? $num_repeat : 1;

for ($k = 0; $k < $num_iterations; $k++) {
if ($_REQUEST['ods_recognize_percentages']
&& ! strcmp(
'percentage',
$cell_attrs['value-type']
)
) {
$value = (double)$cell_attrs['value'];
} elseif ($_REQUEST['ods_recognize_currency']
&& !strcmp('currency', $cell_attrs['value-type'])
) {
$value = (double)$cell_attrs['value'];
} else {
/* We need to concatenate all paragraphs */
$values = array();
foreach ($text as $paragraph) {
$values[] = (string)$paragraph;
}
$value = implode("\n", $values);
}
if (! $col_names_in_first_row) {
$tempRow[] = $value;
} else {
$col_names[] = $value;
}

++$col_count;
}
} else {
/* Number of blank columns repeated */
if ($col_count < count($row->children('table', true)) - 1
) {
$attr = $cell->attributes('table', true);
$num_null = (int)$attr['number-columns-repeated'];

if ($num_null) {
if (! $col_names_in_first_row) {
for ($i = 0; $i < $num_null; ++$i) {
$tempRow[] = 'NULL';
++$col_count;
}
} else {
for ($i = 0; $i < $num_null; ++$i) {
$col_names[] = PMA_getColumnAlphaName(
$col_count + 1
);
++$col_count;
}
}
} else {
if (! $col_names_in_first_row) {
$tempRow[] = 'NULL';
} else {
$col_names[] = PMA_getColumnAlphaName(
$col_count + 1
);
}

++$col_count;
}
}
}
}

/* Find the widest row */
if ($col_count > $max_cols) {
$max_cols = $col_count;
}

/* Don't include a row that is full of NULL values */
if (! $col_names_in_first_row) {
if ($_REQUEST['ods_empty_rows']) {
foreach ($tempRow as $cell) {
if (strcmp('NULL', $cell)) {
$tempRows[] = $tempRow;
break;
}
}
} else {
$tempRows[] = $tempRow;
}
}

$col_count = 0;
$col_names_in_first_row = false;
$tempRow = array();
}
}

/* Skip over empty sheets */
if (count($tempRows) == 0 || count($tempRows[0]) == 0) {
$col_names = array();
$tempRow = array();
$tempRows = array();
continue;
}

/**
* Fill out each row as necessary to make
* every one exactly as wide as the widest
* row. This included column names.
*/

/* Fill out column names */
for ($i = count($col_names); $i < $max_cols; ++$i) {
$col_names[] = PMA_getColumnAlphaName($i + 1);
}

/* Fill out all rows */
$num_rows = count($tempRows);
for ($i = 0; $i < $num_rows; ++$i) {
for ($j = count($tempRows[$i]); $j < $max_cols; ++$j) {
$tempRows[$i][] = 'NULL';
}
}

/* Store the table name so we know where to place the row set */
$tbl_attr = $sheet->attributes('table', true);
$tables[] = array((string)$tbl_attr['name']);

/* Store the current sheet in the accumulator */
$rows[] = array((string)$tbl_attr['name'], $col_names, $tempRows);
$tempRows = array();
$col_names = array();
$max_cols = 0;
}

unset($tempRow);
unset($tempRows);
unset($col_names);
unset($sheets);
unset($xml);

/**
* Bring accumulated rows into the corresponding table
*/
$num_tbls = count($tables);
for ($i = 0; $i < $num_tbls; ++$i) {
for ($j = 0; $j < count($rows); ++$j) {
if (! strcmp($tables[$i][TBL_NAME], $rows[$j][TBL_NAME])) {
if (! isset($tables[$i][COL_NAMES])) {
$tables[$i][] = $rows[$j][COL_NAMES];
}

$tables[$i][ROWS] = $rows[$j][ROWS];
}
}
}

/* No longer needed */
unset($rows);

/* Obtain the best-fit MySQL types for each column */
$analyses = array();

$len = count($tables);
for ($i = 0; $i < $len; ++$i) {
$analyses[] = PMA_analyzeTable($tables[$i]);
}

/**
* string $db_name (no backquotes)
*
* array $table = array(table_name, array() column_names, array()() rows)
* array $tables = array of "$table"s
*
* array $analysis = array(array() column_types, array() column_sizes)
* array $analyses = array of "$analysis"s
*
* array $create = array of SQL strings
*
* array $options = an associative array of options
*/

/* Set database name to the currently selected one, if applicable */
if (strlen($db)) {
$db_name = $db;
$options = array('create_db' => false);
} else {
$db_name = 'ODS_DB';
$options = null;
}

/* Non-applicable parameters */
$create = null;

/* Created and execute necessary SQL statements from data */
PMA_buildSQL($db_name, $tables, $analyses, $create, $options);

unset($tables);
unset($analyses);

/* Commit any possible data in buffers */
PMA_importRunQuery();
}
}