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<?php
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/**
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* @file
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* Drush support for node_export.
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*/
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/**
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* Implements hook_drush_command().
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*/
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function node_export_drush_command() {
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$items = array();
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$items['node-export-export'] = array(
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'callback' => 'drupal_node_export_callback_export',
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'description' => "Export nodes using Node export.",
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'arguments' => array(
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'nids' => "A list of space-separated node IDs to export.",
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),
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'options' => array(
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'file' => "The filename of the output file. If supplied, the node code will be exported to that file, otherwise it will export to stdout.",
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'format' => "If supplied, node code will be output using a particular export format, if available. (e.g. serialize)",
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'status' => "Filter for 'status'; A boolean value (0 or 1) indicating whether the node is published (visible to non-administrators).",
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'promote' => "Filter for 'promote'; A boolean value (0 or 1) indicating whether the node should be displayed on the front page.",
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'sticky' => "Filter for 'sticky'; A boolean value (0 or 1) indicating whether the node should be displayed at the top of lists in which it appears.",
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'translate' => "Filter for 'translate'; A boolean value (0 or 1) indicating whether the node translation needs to be updated.",
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'language' => "Filter for 'language'; The language code (e.g. de or en-US) of this node.",
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'type' => "Filter for 'type'; The machine-readable name (e.g. story or page) of the type of this node.",
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'sql' => "Filter by SQL (EXPERIMENTAL); An SQL query string that returns nids (e.g. \"SELECT nid FROM nodes WHERE nid < 10\").",
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'code' => "Filter by PHP code (EXPERIMENTAL); PHP code that prints or returns, an array or CSV string of nids (e.g. \"custom_get_my_nids();\"). Don't include PHP tags.",
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),
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'examples' => array(
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'drush node-export-export 45 46 47 --file=filename' =>
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"export nodes with node IDs 45, 46, and 47 to the file with the supplied filename.",
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'drush node-export-export --type=story,page --file=filename' =>
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"export nodes of type story and page to the file with the supplied filename.",
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),
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);
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$items['node-export-import'] = array(
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'callback' => 'drush_node_export_callback_import',
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'description' => "Import nodes previously exported with Node export.",
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'options' => array(
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'uid' => "User ID of user to save nodes as. If not given will use the user with an ID of 1. You may specify 0 for the Anonymous user.",
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'file' => "The filename of the input file. If supplied, the node code will be imported from that file, otherwise it will import to stdin.",
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),
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'examples' => array(
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'drush node-export-import --file=filename' =>
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'Import nodes from the file with the given filename.',
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'drush node-export-import --uid=2 --file=filename' =>
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"Import nodes from the file with the given filename. The author of the nodes will be set to the user that has the user ID of 2.",
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),
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);
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// Add aliases for usability.
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node_export_drush_command_add_alias($items, 'node-export-export', 'node-export');
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node_export_drush_command_add_alias($items, 'node-export-export', 'ne-export');
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node_export_drush_command_add_alias($items, 'node-export-import', 'ne-import');
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return $items;
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}
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/**
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* A function to help alias commands as other commands.
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*/
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function node_export_drush_command_add_alias(&$items, $command, $alias) {
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// Create a property on the command for adding aliases, if not there.
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if (!isset($items[$command]['node_export command aliases'])) {
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$items[$command]['node_export command aliases'] = array();
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}
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// Record the alias into that property.
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$items[$command]['node_export command aliases'][] = $alias;
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// Create the alias as a new command.
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$items[$alias] = $items[$command];
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// Indicate what this new command is an alias for.
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$items[$alias]['node_export alias for'] = $command;
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}
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/**
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* Implements hook_drush_help().
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*
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* This function is called whenever a drush user calls
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* 'drush help <name-of-your-command>'
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*
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* @param
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* A string with the help section (prepend with 'drush:')
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*
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* @return
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* A string with the help text for your command.
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*/
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function node_export_drush_help($section) {
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// This is to prevent duplication of information from hook_drush_command().
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$commands = node_export_drush_command();
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foreach ($commands as $command => $command_info) {
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if ($section == 'drush:' . $command) {
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$out = $command_info['description'];
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if (isset($command_info['node_export alias for'])) {
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$output .= "\nThis command is an alias for ";
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$output .= $command_info['node_export alias for'] . ".";
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}
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if (isset($command_info['node_export command aliases'])) {
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if (count($command_info['node_export command aliases']) == 1) {
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$output .= "\nThis command can be called by it's alias; ";
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$output .= $command_info['node_export command aliases'] . ".";
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}
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else {
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$last_alias = array_pop($command_info['node_export command aliases']);
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$output .= "\nThis command can be called by it's aliases; ";
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$output .= implode(", ", $command_info['node_export command aliases']);
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$output .= ", or " . $last_alias . ".";
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}
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}
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$out .= "\n\nArguments:";
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if (isset($command_info['arguments'])) {
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foreach ($command_info['arguments'] as $k => $v) {
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$out .= "\n " . $k . " : " . $v;
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}
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}
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$out .= "\n\nOptions:";
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if (isset($command_info['options'])) {
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foreach ($command_info['options'] as $k => $v) {
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$out .= "\n " . $k . " : " . $v;
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}
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}
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$out .= "\n\nExamples:";
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if (isset($command_info['examples'])) {
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foreach ($command_info['examples'] as $k => $v) {
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$out .= "\n \'" . $k . "\' : " . $v;
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}
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}
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return dt($out);
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}
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}
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}
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/**
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* Drush command callback.
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*
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* export nodes.
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*/
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function drupal_node_export_callback_export() {
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// Set up an array of nid_filters.
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$nid_filters = array();
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// The base nids.
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$args = array_filter(func_get_args(), 'is_numeric');
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if ($args) {
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$nid_filters['base'] = $args;
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}
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// Filter for values in the node table (except for nids).
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$filters = array(
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'status',
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'promote',
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'sticky',
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'translate',
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'language',
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'type',
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);
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$query = db_select('node', 'n')->fields('n', array('nid'));
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$execute = FALSE;
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foreach ($filters as $filter) {
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$filter_option = drush_get_option($filter);
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if ($filter_option) {
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$query->condition($filter, explode(',', $filter_option), 'IN');
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// Only execute if conditions are set.
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$execute = TRUE;
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}
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}
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if ($execute) {
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$result = $query->execute();
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foreach ($result as $row) {
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$nid_filters['filters'][] = $row->nid;
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}
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}
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// Handle SQL option.
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$sql = drush_get_option('sql');
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if ($sql) {
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$result = db_query($sql);
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foreach ($result as $row) {
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$nid_filters['sql'][] = $row->nid;
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}
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}
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// Handle PHP option.
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$code = drush_get_option('code');
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if ($code) {
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ob_start();
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print eval("?><?php " . $code . " ?>");
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$result = ob_get_contents();
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ob_end_clean();
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if (is_array($result)) {
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$nid_filters['code'] = $result;
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}
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else {
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$nid_filters['code'] = explode(
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",",
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str_replace(array("\n", "\r", "\t", " "), '', $result)
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);
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}
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}
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if (count($nid_filters) > 1) {
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// Compute the intersect of all $nid_filters if there are more than one.
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$nids = call_user_func_array('array_intersect', $nid_filters);
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}
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elseif (count($nid_filters) == 1) {
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// Use the only filter if there is only one.
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$nids = reset($nid_filters);
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}
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else {
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// Is there are no filters at all, do a query to get all nids.
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$result = db_select('node', 'n')->fields('n', array('nid'))->execute();
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$nids = array();
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foreach ($result as $row) {
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$nids[] = $row->nid;
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}
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}
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// Handle format option.
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$format = drush_get_option('format');
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if (empty($nids)) {
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drush_set_error('DRUSH_NOT_COMPLETED', "No nodes found.");
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}
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$result = node_export($nids, $format, 'dt');
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if ($result['success']) {
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$filename = drush_get_option('file');
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if ($filename) {
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// Output data to file. Note this only takes a flat filename for the current directory.
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// If file exists, ask for whether to overwrite.
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if (file_exists($filename)) {
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if (!drush_confirm(dt("File $filename exists. Do you really want to overwrite?"))) {
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return;
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}
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}
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// Write the file.
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file_put_contents($filename, $result['output']);
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}
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else {
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// stdout.
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drush_print_r($result['output']);
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}
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}
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else {
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// We have received an error message.
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drush_set_error('DRUSH_NOT_COMPLETED', strip_tags(implode("\n", $result['output'])));
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}
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}
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/**
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* Drush command callback.
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*
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* Import nodes from data.
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*/
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function drush_node_export_callback_import() {
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// Switch to site maintenance account or the specified user so imported nodes are not anonymous.
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$uid = drush_get_option('uid');
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// Test on NULL so uid may be given as 0.
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if (is_null($uid)) {
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$uid = 1;
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}
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// User 0 is already loaded.
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if ($uid != 0) {
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global $user;
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$user = user_load($uid);
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}
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$filename = drush_get_option('file');
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if ($filename) {
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$node_code = file_get_contents($filename, "r");
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}
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else {
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$node_code = file_get_contents("php://stdin", "r");
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}
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if (!empty($node_code)) {
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$result = node_export_import($node_code, 'dt');
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if (!$result['success']) {
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// We have received an error message.
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drush_set_error('DRUSH_NOT_COMPLETED', strip_tags(implode("\n", $result['output'])));
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}
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else {
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drush_print(strip_tags(implode("\n", $result['output'])));
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}
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}
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}
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