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cat_dbitem_export.php
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Fri, Nov 21, 5:47 PM

cat_dbitem_export.php
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<?php
define('EXPORT_STEP', 200); // export by 200 items (e.g. links)
define('IMPORT_CHUNK', 10240); // 10240); //30720); //50120); // 5 KB
define('IMPORT_TEMP', 1);
define('IMPORT_LIVE', 2);
class kCatDBItemExportHelper extends kHelper {
var $false = false;
var $cache = Array();
/**
* Allows to find out what items are new in cache
*
* @var Array
*/
var $cacheStatus = Array();
var $cacheTable = '';
var $exportFields = Array();
/**
* Export options
*
* @var Array
*/
var $exportOptions = Array();
/**
* Item beeing currenly exported
*
* @var kCatDBItem
*/
var $curItem = null;
/**
* Dummy category object
*
* @var CategoriesItem
*/
var $dummyCategory = null;
/**
* Pointer to opened file
*
* @var resource
*/
var $filePointer = null;
function kCatDBItemExportHelper()
{
parent::kHelper();
$this->cacheTable = TABLE_PREFIX.'ImportCache';
}
/**
* Returns value from cache if found or false otherwise
*
* @param string $type
* @param int $key
* @return mixed
*/
function getFromCache($type, $key)
{
return getArrayValue($this->cache, $type, $key);
}
/**
* Adds value to be cached
*
* @param string $type
* @param int $key
* @param mixed $value
*/
function addToCache($type, $key, $value, $is_new = true)
{
// if (!isset($this->cache[$type])) $this->cache[$type] = Array();
$this->cache[$type][$key] = $value;
if ($is_new) {
$this->cacheStatus[$type][$key] = true;
}
}
function storeCache($cache_types)
{
$cache_types = explode(',', $cache_types);
$values_sql = '';
foreach ($cache_types as $cache_type) {
$sql_mask = '('.$this->Conn->qstr($cache_type).',%s,%s),';
$cache = getArrayValue($this->cacheStatus, $cache_type);
if (!$cache) $cache = Array();
foreach ($cache as $var_name => $cache_status) {
$var_value = $this->cache[$cache_type][$var_name];
$values_sql .= sprintf($sql_mask, $this->Conn->qstr($var_name), $this->Conn->qstr($var_value) );
}
}
$values_sql = preg_replace('/(.*),$/', '\\1', $values_sql);
if ($values_sql) {
$sql = 'INSERT INTO '.$this->cacheTable.'(`CacheName`,`VarName`,`VarValue`) VALUES '.$values_sql;
$this->Conn->Query($sql);
}
}
function loadCache()
{
$sql = 'SELECT * FROM '.$this->cacheTable;
$records = $this->Conn->Query($sql);
$this->cache = Array();
foreach ($records as $record) {
$this->addToCache($record['CacheName'], $record['VarName'], $record['VarValue'], false);
}
}
/**
* Fill required fields with dummy values
*
* @param kEvent $event
*/
function fillRequiredFields(&$event, &$object, $set_status = false)
{
if ($object == $this->false) {
$object =& $event->getObject();
}
$has_empty = false;
$fields = array_keys($object->Fields);
foreach ($fields as $field_name)
{
$field_options =& $object->Fields[$field_name];
if (isset($object->VirtualFields[$field_name]) || !getArrayValue($field_options, 'required') ) continue;
if ( $object->GetDBField($field_name) ) continue;
$formatter_class = getArrayValue($field_options, 'formatter');
if ($formatter_class) // not tested
{
$formatter =& $this->Application->recallObject($formatter_class);
$sample_value = $formatter->GetSample($field_name, $field_options, $object);
}
$has_empty = true;
$object->SetDBField($field_name, isset($sample_value) && $sample_value ? $sample_value : 'no value');
}
if ($set_status && $has_empty) {
$object->SetDBField('Status', 0);
}
}
/**
* Verifies that all user entered export params are correct
*
* @param kEvent $event
*/
function verifyOptions(&$event)
{
if ($this->Application->RecallVar($event->getPrefixSpecial().'_ForceNotValid'))
{
$this->Application->StoreVar($event->getPrefixSpecial().'_ForceNotValid', 0);
return false;
}
$this->fillRequiredFields($event, $this->false);
$object =& $event->getObject();
$cross_unique_fields = Array('FieldsSeparatedBy', 'FieldsEnclosedBy');
if (($object->GetDBField('CategoryFormat') == 1) || ($event->Special == 'import')) // in one field
{
$object->setRequired('CategorySeparator', true);
$cross_unique_fields[] = 'CategorySeparator';
}
$ret = $object->Validate();
// check if cross unique fields has no same values
foreach ($cross_unique_fields as $field_index => $field_name)
{
if (getArrayValue($object->FieldErrors, $field_name, 'pseudo') == 'required') continue;
$check_fields = $cross_unique_fields;
unset($check_fields[$field_index]);
foreach ($check_fields as $check_field)
{
if ($object->GetDBField($field_name) == $object->GetDBField($check_field))
{
$object->SetError($check_field, 'unique');
}
}
}
if ($event->Special == 'import')
{
$this->exportOptions = $this->loadOptions($event);
$automatic_fields = ($object->GetDBField('FieldTitles') == 1);
$object->setRequired('ExportColumns', !$automatic_fields);
$category_prefix = '__CATEGORY__';
if ( $automatic_fields && ($this->exportOptions['SkipFirstRow']) ) {
$this->openFile($event);
$this->exportOptions['ExportColumns'] = $this->readRecord();
$this->closeFile();
// remove additional (non-parseble columns)
foreach ($this->exportOptions['ExportColumns'] as $field_index => $field_name) {
if (!$this->validateField($field_name, $object)) {
unset($this->exportOptions['ExportColumns'][$field_index]);
}
}
$category_prefix = '';
}
// 1. check, that we have column definitions
if (!$this->exportOptions['ExportColumns']) {
$object->setError('ExportColumns', 'required');
$ret = false;
}
else {
// 1.1. check that all required fields are present in imported file
$missing_columns = Array();
foreach ($object->Fields as $field_name => $field_options) {
if ($object->SkipField($field_name)) continue;
if (getArrayValue($field_options, 'required') && !in_array($field_name, $this->exportOptions['ExportColumns']) ) {
$missing_columns[] = $field_name;
$object->setError('ExportColumns', 'required_fields_missing', 'la_error_RequiredColumnsMissing');
$ret = false;
}
}
if (!$ret && $this->Application->isDebugMode()) {
$this->Application->Debugger->appendHTML('Missing required for import/export:');
$this->Application->Debugger->dumpVars($missing_columns);
}
}
// 2. check, that we have only mixed category field or only separated category fields
$category_found['mixed'] = false;
$category_found['separated'] = false;
foreach ($this->exportOptions['ExportColumns'] as $import_field) {
if (preg_match('/^'.$category_prefix.'Category(Path|[0-9]+)/', $import_field, $rets)) {
$category_found[$rets[1] == 'Path' ? 'mixed' : 'separated'] = true;
}
}
if ($category_found['mixed'] && $category_found['separated']) {
$object->SetError('ExportColumns', 'unique_category', 'la_error_unique_category_field');
$ret = false;
}
// 3. check, that duplicates check fields are selected & present in imported fields
if ($this->exportOptions['ReplaceDuplicates']) {
if ($this->exportOptions['CheckDuplicatesMethod'] == 1) {
$check_fields = Array($object->IDField);
}
else {
$check_fields = $this->exportOptions['DuplicateCheckFields'] ? explode('|', substr($this->exportOptions['DuplicateCheckFields'], 1, -1)) : Array();
$object =& $event->getObject();
$language_id = $this->Application->GetDefaultLanguageId();
foreach ($check_fields as $index => $check_field) {
foreach ($object->Fields as $field_name => $field_options) {
if ($field_name == 'l'.$language_id.'_'.$check_field) {
$check_fields[$index] = 'l'.$language_id.'_'.$check_field;
break;
}
}
}
}
$this->exportOptions['DuplicateCheckFields'] = $check_fields;
if (!$check_fields) {
$object->setError('CheckDuplicatesMethod', 'required');
$ret = false;
}
else {
foreach ($check_fields as $check_field) {
if (!in_array($check_field, $this->exportOptions['ExportColumns'])) {
$object->setError('ExportColumns', 'required');
$ret = false;
break;
}
}
}
}
$this->saveOptions($event);
}
return $ret;
}
/**
* Returns filename to read import data from
*
* @return string
*/
function getImportFilename()
{
if ($this->exportOptions['ImportSource'] == 1)
{
$ret = $this->exportOptions['ImportFilename']; // ['name']; commented by Kostja
}
else {
$ret = $this->exportOptions['ImportLocalFilename'];
}
return EXPORT_PATH.'/'.$ret;
}
/**
* Returns filename to write export data to
*
* @return string
*/
function getExportFilename()
{
return EXPORT_PATH.'/'.$this->exportOptions['ExportFilename'].'.'.$this->getFileExtension();
}
/**
* Opens file required for export/import operations
*
* @param kEvent $event
*/
function openFile(&$event)
{
if ($event->Special == 'export') {
$write_mode = ($this->exportOptions['start_from'] == 0) ? 'w' : 'a';
$this->filePointer = fopen($this->getExportFilename(), $write_mode);
}
else {
$this->filePointer = fopen($this->getImportFilename(), 'r');
}
// skip UTF-8 BOM Modifier
$first_chars = fread($this->filePointer, 3);
if (bin2hex($first_chars) != 'efbbbf') {
fseek($this->filePointer, 0);
}
}
/**
* Closes opened file
*
*/
function closeFile()
{
fclose($this->filePointer);
}
function getExportSQL($count_only = false)
{
if ($this->exportOptions['export_ids'] === false)
{
// get links from current category & all it's subcategories
$join_clauses = Array();
$custom_sql = '';
$custom_table = $this->Application->getUnitOption($this->curItem->Prefix.'-cdata', 'TableName');
if ($custom_table) {
$ml_formatter =& $this->Application->recallObject('kMultiLanguage');
$custom_fields = $this->Application->getUnitOption($this->curItem->Prefix, 'CustomFields');
foreach ($custom_fields as $custom_id => $custom_name) {
$custom_sql .= 'custom_data.'.$ml_formatter->LangFieldName('cust_'.$custom_id).' AS cust_'.$custom_name.',';
}
$join_clauses[$custom_table.' custom_data'] = 'custom_data.ResourceId = item_table.ResourceId';
}
$join_clauses[TABLE_PREFIX.'CategoryItems ci'] = 'ci.ItemResourceId = item_table.ResourceId';
$join_clauses[TABLE_PREFIX.'Category c'] = 'c.CategoryId = ci.CategoryId';
$sql = 'SELECT item_table.*, '.$custom_sql.' ci.CategoryId
FROM '.$this->curItem->TableName.' item_table';
foreach ($join_clauses as $table_name => $join_expression) {
$sql .= ' LEFT JOIN '.$table_name.' ON '.$join_expression;
}
$sql .= ' WHERE ';
if ($this->exportOptions['export_cats_ids'][0] == 0)
{
$sql .= '1';
}
else {
foreach ($this->exportOptions['export_cats_ids'] as $category_id) {
$sql .= '(c.ParentPath LIKE "%|'.$category_id.'|%") OR ';
}
$sql = preg_replace('/(.*) OR $/', '\\1', $sql);
}
$sql .= ' ORDER BY ci.PrimaryCat DESC'; // NEW
}
else {
// get only selected links
$sql = 'SELECT item_table.*, '.$this->exportOptions['export_cats_ids'][0].' AS CategoryId
FROM '.$this->curItem->TableName.' item_table
WHERE '.$this->curItem->IDField.' IN ('.implode(',', $this->exportOptions['export_ids']).')';
}
if (!$count_only)
{
$sql .= ' LIMIT '.$this->exportOptions['start_from'].','.EXPORT_STEP;
}
else {
$sql = preg_replace("/^.*SELECT(.*?)FROM(?!_)/is", "SELECT COUNT(*) AS count FROM ", $sql);
}
return $sql;
}
/**
* Enter description here...
*
* @param kEvent $event
*/
function performExport(&$event)
{
$this->exportOptions = $this->loadOptions($event);
$this->exportFields = $this->exportOptions['ExportColumns'];
$this->curItem =& $event->getObject( Array('skip_autoload' => true) );
$this->openFile($event);
if ($this->exportOptions['start_from'] == 0) // first export step
{
if (!getArrayValue($this->exportOptions, 'IsBaseCategory')) {
$this->exportOptions['IsBaseCategory'] = 0;
}
if ($this->exportOptions['IsBaseCategory'] ) {
$sql = 'SELECT CachedNavbar
FROM '.TABLE_PREFIX.'Category
WHERE CategoryId = '.$this->Application->GetVar('m_cat_id');
$this->exportOptions['BaseLevel'] = substr_count($this->Conn->GetOne($sql), '>') + 1; // level to cut from other categories
}
// 1. export field titles if required
if ($this->exportOptions['IncludeFieldTitles'])
{
$data_array = Array();
foreach ($this->exportFields as $export_field)
{
$data_array = array_merge($data_array, $this->getFieldCaption($export_field));
}
$this->writeRecord($data_array);
}
$this->exportOptions['total_records'] = $this->Conn->GetOne( $this->getExportSQL(true) );
}
// 2. export data
$records = $this->Conn->Query( $this->getExportSQL() );
$records_exported = 0;
foreach ($records as $record_info) {
$this->curItem->Clear();
$this->curItem->SetDBFieldsFromHash($record_info);
$this->setCurrentID();
$this->curItem->raiseEvent('OnAfterItemLoad', $this->curItem->GetID() );
$data_array = Array();
foreach ($this->exportFields as $export_field)
{
$data_array = array_merge($data_array, $this->getFieldValue($export_field) );
}
$this->writeRecord($data_array);
$records_exported++;
}
$this->closeFile();
$this->exportOptions['start_from'] += $records_exported;
$this->saveOptions($event);
return $this->exportOptions;
}
function getItemFields()
{
// just in case dummy user selected automtic mode & moved columns too :(
return array_merge($this->curItem->Fields['AvailableColumns']['options'], $this->curItem->Fields['ExportColumns']['options']);
}
/**
* Checks if field really belongs to importable field list
*
* @param string $field_name
* @param kCatDBItem $object
* @return bool
*/
function validateField($field_name, &$object)
{
// 1. convert custom field
$field_name = preg_replace('/^Custom_(.*)/', '__CUSTOM__\\1', $field_name);
// 2. convert category field (mixed version & serparated version)
$field_name = preg_replace('/^Category(Path|[0-9]+)/', '__CATEGORY__Category\\1', $field_name);
$valid_fields = $object->getPossibleExportColumns();
return isset($valid_fields[$field_name]) || isset($valid_fields['__VIRTUAL__'.$field_name]);
}
/**
* Enter description here...
*
* @param kEvent $event
*/
function performImport(&$event)
{
if (!$this->exportOptions) {
// load import options in case if not previously loaded in verification function
$this->exportOptions = $this->loadOptions($event);
}
$backup_category_id = $this->Application->GetVar('m_cat_id');
$this->Application->SetVar('m_cat_id', (int)$this->Application->RecallVar('ImportCategory') );
$this->openFile($event);
$bytes_imported = 0;
if ($this->exportOptions['start_from'] == 0) // first export step
{
// 1st time run
if ($this->exportOptions['SkipFirstRow']) {
$this->readRecord();
$this->exportOptions['start_from'] = ftell($this->filePointer);
$bytes_imported = ftell($this->filePointer);
}
$current_category_id = $this->Application->GetVar('m_cat_id');
if ($current_category_id > 0) {
$sql = 'SELECT ParentPath FROM '.TABLE_PREFIX.'Category WHERE CategoryId = '.$current_category_id;
$this->exportOptions['ImportCategoryPath'] = $this->Conn->GetOne($sql);
}
else {
$this->exportOptions['ImportCategoryPath'] = '';
}
$this->exportOptions['total_records'] = filesize($this->getImportFilename());
}
else {
$this->loadCache();
}
$this->exportFields = $this->exportOptions['ExportColumns'];
$this->addToCache('category_parent_path', $this->Application->GetVar('m_cat_id'), $this->exportOptions['ImportCategoryPath']);
// 2. import data
$this->dummyCategory =& $this->Application->recallObject('c.-tmpitem', 'c', Array('skip_autoload' => true));
fseek($this->filePointer, $this->exportOptions['start_from']);
while (($bytes_imported < IMPORT_CHUNK) && !feof($this->filePointer)) {
$data = $this->readRecord();
if ($data) {
if ($this->exportOptions['ReplaceDuplicates']) {
// set fields used as keys for replace duplicates code
$this->resetImportObject($event, IMPORT_TEMP, $data);
}
$this->processCurrentItem($event, $data);
}
$bytes_imported = ftell($this->filePointer) - $this->exportOptions['start_from'];
}
$this->closeFile();
$this->Application->SetVar('m_cat_id', $backup_category_id);
$this->exportOptions['start_from'] += $bytes_imported;
$this->storeCache('new_ids');
$this->saveOptions($event);
if ($this->exportOptions['start_from'] == $this->exportOptions['total_records']) {
$this->Conn->Query('TRUNCATE TABLE '.$this->cacheTable);
}
return $this->exportOptions;
}
function setCurrentID()
{
$this->curItem->setID( $this->curItem->GetDBField($this->curItem->IDField) );
}
function setFieldValue($field_index, $value)
{
if (empty($value)) {
$value = null;
}
$field_name = getArrayValue($this->exportFields, $field_index);
if ($field_name == 'ResourceId') {
return false;
}
if (substr($field_name, 0, 7) == 'Custom_') {
$field_name = 'cust_'.substr($field_name, 7);
$this->curItem->SetField($field_name, $value);
}
elseif ($field_name == 'CategoryPath' || $field_name == '__CATEGORY__CategoryPath') {
$this->curItem->CategoryPath = $value ? explode($this->exportOptions['CategorySeparator'], $value) : Array();
}
elseif (substr($field_name, 0, 8) == 'Category') {
$this->curItem->CategoryPath[ (int)substr($field_name, 8) - 1 ] = $value;
}
elseif (substr($field_name, 0, 20) == '__CATEGORY__Category') {
$this->curItem->CategoryPath[ (int)substr($field_name, 20) ] = $value;
}
elseif (substr($field_name, 0, 11) == '__VIRTUAL__') {
$field_name = substr($field_name, 11);
$this->curItem->SetField($field_name, $value);
}
else {
$this->curItem->SetField($field_name, $value);
}
$pseudo_error = getArrayValue($this->curItem->FieldErrors, $field_name, 'pseudo');
if ($pseudo_error) {
$this->curItem->SetDBField($field_name, null);
unset($this->curItem->FieldErrors[$field_name]);
}
}
function resetImportObject(&$event, $object_type, $record_data = null)
{
switch ($object_type) {
case IMPORT_TEMP:
$this->curItem =& $event->getObject( Array('skip_autoload' => true) );
break;
case IMPORT_LIVE:
$this->curItem =& $this->Application->recallObject($event->Prefix.'.-tmpitem'.$event->Special, $event->Prefix, Array('skip_autoload' => true));
break;
}
$this->curItem->Clear();
if (isset($record_data)) {
$this->setImportData($record_data);
}
}
function setImportData($record_data)
{
foreach ($record_data as $field_index => $field_value) {
$this->setFieldValue($field_index, $field_value);
}
$this->setCurrentID();
}
function getItemCategory()
{
$backup_category_id = $this->Application->GetVar('m_cat_id');
$category_id = $this->getFromCache('category_names', implode(':', $this->curItem->CategoryPath));
if ($category_id) {
$this->Application->SetVar('m_cat_id', $category_id);
return $category_id;
}
foreach ($this->curItem->CategoryPath as $category_index => $category_name) {
if (!$category_name) continue;
$category_key = crc32( implode(':', array_slice($this->curItem->CategoryPath, 0, $category_index + 1) ) );
$category_id = $this->getFromCache('category_names', $category_key);
if ($category_id === false) {
// get parent category path to search only in it
$current_category_id = $this->Application->GetVar('m_cat_id');
// $parent_path = $this->getParentPath($current_category_id);
// get category id from database by name
$sql = 'SELECT CategoryId
FROM '.TABLE_PREFIX.'Category
WHERE (Name = '.$this->Conn->qstr($category_name).') AND (ParentId = '.$current_category_id.')';
$category_id = $this->Conn->GetOne($sql);
if ($category_id === false) {
// category not in db -> create
$category_fields = Array( 'Name' => $category_name, 'Description' => $category_name,
'Status' => STATUS_ACTIVE, 'ParentId' => $current_category_id, 'AutomaticFilename' => 1
);
$this->dummyCategory->SetDBFieldsFromHash($category_fields);
if ($this->dummyCategory->Create()) {
$category_id = $this->dummyCategory->GetID();
$this->addToCache('category_parent_path', $category_id, $this->dummyCategory->GetDBField('ParentPath'));
$this->addToCache('category_names', $category_key, $category_id);
}
}
else {
$this->addToCache('category_names', $category_key, $category_id);
}
}
if ($category_id) {
$this->Application->SetVar('m_cat_id', $category_id);
}
}
if (!$this->curItem->CategoryPath) {
$category_id = $backup_category_id;
}
return $category_id;
}
/**
* Enter description here...
*
* @param kEvent $event
*/
function processCurrentItem(&$event, $record_data)
{
$save_method = 'Create';
$load_keys = Array();
// create/update categories
$backup_category_id = $this->Application->GetVar('m_cat_id');
// perform replace duplicates code
if ($this->exportOptions['ReplaceDuplicates']) {
// get replace keys first, then reset current item to empty one
$category_id = $this->getItemCategory();
if ($this->exportOptions['CheckDuplicatesMethod'] == 1) {
if ($this->curItem->GetID()) {
$load_keys = Array($this->curItem->IDField => $this->curItem->GetID());
}
}
else {
$key_fields = $this->exportOptions['DuplicateCheckFields'];
foreach ($key_fields as $key_field) {
$load_keys[$key_field] = $this->curItem->GetDBField($key_field);
}
}
$this->resetImportObject($event, IMPORT_LIVE);
if (count($load_keys)) {
$where_clause = '';
foreach ($load_keys as $field_name => $field_value) {
$where_clause .= '(item_table.`'.$field_name.'` = '.$this->Conn->qstr($field_value).') AND ';
}
$where_clause = preg_replace('/(.*) AND $/', '\\1', $where_clause);
$item_id = $this->getFromCache('new_ids', crc32($where_clause));
if (!$item_id) {
if ($this->exportOptions['CheckDuplicatesMethod'] == 2) {
// by other fields
$parent_path = $this->getParentPath($category_id);
$where_clause = '(c.ParentPath LIKE "'.$parent_path.'%") AND '.$where_clause;
}
$sql = 'SELECT '.$this->curItem->IDField.'
FROM '.$this->curItem->TableName.' item_table
LEFT JOIN '.TABLE_PREFIX.'CategoryItems ci ON ci.ItemResourceId = item_table.ResourceId
LEFT JOIN '.TABLE_PREFIX.'Category c ON c.CategoryId = ci.CategoryId
WHERE '.$where_clause;
$item_id = $this->Conn->GetOne($sql);
}
$save_method = $item_id && $this->curItem->Load($item_id) ? 'Update' : 'Create';
}
$this->setImportData($record_data);
}
else {
$this->resetImportObject($event, IMPORT_LIVE, $record_data);
$category_id = $this->getItemCategory();
}
// create main record
if ($save_method == 'Create') {
$this->fillRequiredFields($this->false, $this->curItem, true);
}
// $sql_start = getmicrotime();
if (!$this->curItem->$save_method()) {
return false;
}
// $sql_end = getmicrotime();
// $this->saveLog('SQL ['.$save_method.'] Time: '.($sql_end - $sql_start).'s');
if ($load_keys && ($save_method == 'Create') && $this->exportOptions['ReplaceDuplicates']) {
// map new id to old id
$this->addToCache('new_ids', crc32($where_clause), $this->curItem->GetID() );
}
// assign item to categories
$this->curItem->assignToCategory($category_id, false);
$this->Application->SetVar('m_cat_id', $backup_category_id);
return true;
}
/*function saveLog($msg)
{
$fp = fopen(FULL_PATH.'/sqls.log', 'a');
fwrite($fp, $msg."\n");
fclose($fp);
}*/
/**
* Returns category parent path, if possible, then from cache
*
* @param int $category_id
* @return string
*/
function getParentPath($category_id)
{
$parent_path = $this->getFromCache('category_parent_path', $category_id);
if ($parent_path === false) {
$sql = 'SELECT ParentPath
FROM '.TABLE_PREFIX.'Category
WHERE CategoryId = '.$category_id;
$parent_path = $this->Conn->GetOne($sql);
$this->addToCache('category_parent_path', $category_id, $parent_path);
}
return $parent_path;
}
function getFileExtension()
{
return $this->exportOptions['ExportFormat'] == 1 ? 'csv' : 'xml';
}
function getLineSeparator($option = 'LineEndings')
{
return $this->exportOptions[$option] == 1 ? "\r\n" : "\n";
}
/**
* Returns field caption for any exported field
*
* @param string $field
* @return string
*/
function getFieldCaption($field)
{
if (substr($field, 0, 10) == '__CUSTOM__')
{
$ret = 'Custom_'.substr($field, 10, strlen($field) );
}
elseif (substr($field, 0, 12) == '__CATEGORY__')
{
return $this->getCategoryTitle();
}
elseif (substr($field, 0, 11) == '__VIRTUAL__') {
$ret = substr($field, 11);
}
else
{
$ret = $field;
}
return Array($ret);
}
/**
* Returns requested field value (including custom fields and category fields)
*
* @param string $field
* @return string
*/
function getFieldValue($field)
{
if (substr($field, 0, 10) == '__CUSTOM__') {
$field = 'cust_'.substr($field, 10, strlen($field));
$ret = $this->curItem->GetField($field);
}
elseif (substr($field, 0, 12) == '__CATEGORY__') {
return $this->getCategoryPath();
}
elseif (substr($field, 0, 11) == '__VIRTUAL__') {
$field = substr($field, 11);
return $this->curItem->GetField($field);
}
else
{
$ret = $this->curItem->GetField($field);
}
$ret = str_replace("\r\n", $this->getLineSeparator('LineEndingsInside'), $ret);
return Array($ret);
}
/**
* Returns category field(-s) caption based on export mode
*
* @return string
*/
function getCategoryTitle()
{
// category path in separated fields
$category_count = $this->getMaxCategoryLevel();
if ($this->exportOptions['CategoryFormat'] == 1)
{
// category path in one field
return $category_count ? Array('CategoryPath') : Array();
}
else
{
$i = 0;
$ret = Array();
while ($i < $category_count) {
$ret[] = 'Category'.($i + 1);
$i++;
}
return $ret;
}
}
/**
* Returns category path in required format for current link
*
* @return string
*/
function getCategoryPath()
{
$category_id = $this->curItem->GetDBField('CategoryId');
$category_path = $this->getFromCache('category_path', $category_id);
if (!$category_path)
{
$sql = 'SELECT CachedNavbar
FROM '.TABLE_PREFIX.'Category
WHERE CategoryId = '.$category_id;
$category_path = $this->Conn->GetOne($sql);
$category_path = $category_path ? explode('>', $category_path) : Array();
if ($this->exportOptions['IsBaseCategory']) {
$i = $this->exportOptions['BaseLevel'];
while ($i > 0) {
array_shift($category_path);
$i--;
}
}
$category_count = $this->getMaxCategoryLevel();
if ($this->exportOptions['CategoryFormat'] == 1) {
// category path in single field
$category_path = $category_count ? Array( implode($this->exportOptions['CategorySeparator'], $category_path) ) : Array();
}
else {
// category path in separated fields
$levels_used = count($category_path);
if ($levels_used < $category_count)
{
$i = 0;
while ($i < $category_count - $levels_used) {
$category_path[] = '';
$i++;
}
}
}
$this->addToCache('category_path', $category_id, $category_path);
}
return $category_path;
}
/**
* Get maximal category deep level from links beeing exported
*
* @return int
*/
function getMaxCategoryLevel()
{
static $max_level = -1;
if ($max_level != -1)
{
return $max_level;
}
$sql = 'SELECT IF(c.CategoryId IS NULL, 0, MAX( LENGTH(c.ParentPath) - LENGTH( REPLACE(c.ParentPath, "|", "") ) - 1 ))
FROM '.$this->curItem->TableName.' item_table
LEFT JOIN '.TABLE_PREFIX.'CategoryItems ci ON item_table.ResourceId = ci.ItemResourceId
LEFT JOIN '.TABLE_PREFIX.'Category c ON c.CategoryId = ci.CategoryId
WHERE (ci.PrimaryCat = 1) AND ';
$where_clause = '';
if ($this->exportOptions['export_ids'] === false) {
// get links from current category & all it's subcategories
if ($this->exportOptions['export_cats_ids'][0] == 0) {
$where_clause = 1;
}
else {
foreach ($this->exportOptions['export_cats_ids'] as $category_id) {
$where_clause .= '(c.ParentPath LIKE "%|'.$category_id.'|%") OR ';
}
$where_clause = preg_replace('/(.*) OR $/', '\\1', $where_clause);
}
}
else {
// get only selected links
$where_clause = $this->curItem->IDField.' IN ('.implode(',', $this->exportOptions['export_ids']).')';
}
$max_level = $this->Conn->GetOne($sql.'('.$where_clause.')');
if ($this->exportOptions['IsBaseCategory'] ) {
$max_level -= $this->exportOptions['BaseLevel'];
}
return $max_level;
}
/**
* Saves one record to export file
*
* @param Array $fields_hash
*/
function writeRecord($fields_hash)
{
fputcsv2($this->filePointer, $fields_hash, $this->exportOptions['FieldsSeparatedBy'], $this->exportOptions['FieldsEnclosedBy'], $this->getLineSeparator() );
}
function readRecord()
{
return fgetcsv($this->filePointer, 10000, $this->exportOptions['FieldsSeparatedBy'], $this->exportOptions['FieldsEnclosedBy']);
}
function saveOptions(&$event, $options = null)
{
if (!isset($options)) {
$options = $this->exportOptions;
}
$this->Application->StoreVar($event->getPrefixSpecial().'_options', serialize($options) );
}
function loadOptions(&$event)
{
return unserialize($this->Application->RecallVar($event->getPrefixSpecial().'_options'));
}
}
?>

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