From bdf17eee3286428ea96dedfb043c3b89e9c679e2 Mon Sep 17 00:00:00 2001
From: Alex Marin <alex.ukf@gmail.com>
Date: Sat, 9 Jun 2012 16:04:36 +0300
Subject: [PATCH] oop: ExportJson

---
 libraries/plugins/export/ExportJson.class.php | 220 ++++++++++++++++++
 1 file changed, 220 insertions(+)
 create mode 100644 libraries/plugins/export/ExportJson.class.php

diff --git a/libraries/plugins/export/ExportJson.class.php b/libraries/plugins/export/ExportJson.class.php
new file mode 100644
index 0000000000..4fa6e19d9d
--- /dev/null
+++ b/libraries/plugins/export/ExportJson.class.php
@@ -0,0 +1,220 @@
+<?php
+/* vim: set expandtab sw=4 ts=4 sts=4: */
+/**
+ * Set of methods used to build dumps of tables as JSON
+ *
+ * @package    PhpMyAdmin-Export
+ * @subpackage JSON
+ */
+if (! defined('PHPMYADMIN')) {
+    exit;
+}
+
+/* Get the export interface */
+require_once "libraries/plugins/ExportPlugin.class.php";
+
+/**
+ * Handles the export for the JSON format
+ *
+ * @todo add descriptions for all vars/methods
+ * @package PhpMyAdmin-Export
+ */
+class ExportJson extends ExportPlugin
+{
+    /**
+     * Constructor
+     */
+    public function __construct()
+    {
+        $this->setProperties();
+    }
+
+    /**
+     * Sets the export JSON properties
+     *
+     * @return void
+     */
+    protected function setProperties()
+    {
+        $this->properties = array(
+            'text' => 'JSON',
+            'extension' => 'json',
+            'mime_type' => 'text/plain',
+            'options' => array(),
+            'options_text' => __('Options')
+        );
+
+        $this->properties['options'] = array(
+            array(
+                'type' => 'begin_group',
+                'name' => 'general_opts'
+            ),
+            array(
+                'type' => 'hidden',
+                'name' => 'structure_or_data',
+            ),
+            array(
+                'type' => 'end_group'
+            )
+        );
+    }
+
+    /**
+     * 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)
+    {
+    }
+
+    /**
+     * Outputs export header
+     *
+     * @return bool Whether it succeeded
+     */
+    public function exportHeader ()
+    {
+        // initialize the general export variables
+        $this->initExportCommonVariables();
+
+        PMA_exportOutputHandler(
+            '/**' . $GLOBALS['crlf']
+            . ' Export to JSON plugin for PHPMyAdmin' . $GLOBALS['crlf']
+            . ' @version 0.1' . $GLOBALS['crlf']
+            . ' */' . $GLOBALS['crlf'] . $GLOBALS['crlf']
+        );
+        return true;
+    }
+
+    /**
+     * Outputs export footer
+     *
+     * @return bool Whether it succeeded
+     */
+    public function exportFooter ()
+    {
+        return true;
+    }
+
+    /**
+     * Outputs database header
+     *
+     * @param string $db Database name
+     *
+     * @return bool Whether it succeeded
+     */
+    public function exportDBHeader ($db)
+    {
+        PMA_exportOutputHandler('// Database \'' . $db . '\'' . $GLOBALS['crlf']);
+        return true;
+    }
+
+    /**
+     * Outputs database footer
+     *
+     * @param string $db Database name
+     *
+     * @return bool Whether it succeeded
+     */
+    public function exportDBFooter ($db)
+    {
+        return true;
+    }
+
+    /**
+     * Outputs CREATE DATABASE statement
+     *
+     * @param string $db Database name
+     *
+     * @return bool Whether it succeeded
+     */
+    public function exportDBCreate($db)
+    {
+        return true;
+    }
+
+    /**
+     * Outputs the content of a table in CSV format
+     *
+     * @param string $db        database name
+     * @param string $table     table name
+     * @param string $crlf      the end of line sequence
+     * @param string $error_url the url to go back in case of error
+     * @param string $sql_query SQL query for obtaining data
+     *
+     * @return bool Whether it succeeded
+     *
+     * @access public
+     */
+    public function exportData($db, $table, $crlf, $error_url, $sql_query)
+    {
+        $result = PMA_DBI_query($sql_query, null, PMA_DBI_QUERY_UNBUFFERED);
+        $columns_cnt = PMA_DBI_num_fields($result);
+
+        // Get field information
+        $fields_meta = PMA_DBI_get_fields_meta($result);
+
+        for ($i = 0; $i < $columns_cnt; $i++) {
+            $columns[$i] = stripslashes(PMA_DBI_field_name($result, $i));
+        }
+        unset($i);
+
+        $buffer = '';
+        $record_cnt = 0;
+        while ($record = PMA_DBI_fetch_row($result)) {
+
+            $record_cnt++;
+
+            // Output table name as comment if this is the first record of the table
+            if ($record_cnt == 1) {
+                $buffer .= '// ' . $db . '.' . $table . $crlf . $crlf;
+                $buffer .= '[{';
+            } else {
+                $buffer .= ', {';
+            }
+
+            for ($i = 0; $i < $columns_cnt; $i++) {
+
+                $isLastLine = ($i + 1 >= $columns_cnt);
+
+                $column = $columns[$i];
+
+                if (is_null($record[$i])) {
+                    $buffer .= '"' . addslashes($column)
+                        . '": null'
+                        . (! $isLastLine ? ',' : '');
+                } elseif ($fields_meta[$i]->numeric) {
+                    $buffer .= '"' . addslashes($column)
+                        . '": '
+                        . $record[$i]
+                        . (! $isLastLine ? ',' : '');
+                } else {
+                    $buffer .= '"' . addslashes($column)
+                        . '": "'
+                        . addslashes($record[$i])
+                        . '"'
+                        . (! $isLastLine ? ',' : '');
+                }
+            }
+
+            $buffer .= '}';
+        }
+
+        if ($record_cnt) {
+            $buffer .=  ']';
+        }
+        if (! PMA_exportOutputHandler($buffer)) {
+            return false;
+        }
+
+        PMA_DBI_free_result($result);
+
+        return true;
+    }
+}
+?>
\ No newline at end of file