From 47bb30c5357d7800d1ff44898a0f660b2222d6fc Mon Sep 17 00:00:00 2001
From: Kijin Sung <kijin@kijinsung.com>
Date: Tue, 30 Jun 2020 00:40:10 +0900
Subject: [PATCH] Implement getColumnInfo()

---
 common/framework/db.php                    | 32 +++++++++++++++++++---
 common/framework/parsers/dbtableparser.php |  1 +
 2 files changed, 29 insertions(+), 4 deletions(-)

diff --git a/common/framework/db.php b/common/framework/db.php
index 60705b3e2..aee81206f 100644
--- a/common/framework/db.php
+++ b/common/framework/db.php
@@ -813,12 +813,36 @@ class DB
 	 *
 	 * @param string $table_name
 	 * @param string $column_name
-	 * @return Parsers\DBTable\Column;
+	 * @return object
 	 */
-	public function getColumnInfo(string $table_name, string $column_name): Parsers\DBTable\Column
+	public function getColumnInfo(string $table_name, string $column_name)
 	{
-		// TODO
-		return new Parsers\DBTable\Column;
+		// If column information is not found, return false.
+		$stmt = $this->_query(sprintf("SHOW FIELDS FROM `%s` WHERE Field = '%s'", $this->addQuotes($this->_prefix . $table_name), $this->addQuotes($column_name)));
+		$column_info = $this->_fetch($stmt);
+		if (!$column_info)
+		{
+			return false;
+		}
+		
+		// Reorganize the type information.
+		$dbtype = strtolower($column_info->{'Type'});
+		if (preg_match('/^([a-z0-9_]+)\(([0-9,\s]+)\)$/i', $dbtype, $matches))
+		{
+			$dbtype = $matches[1];
+			$size = $matches[2];
+		}
+		$xetype = Parsers\DBTableParser::getXEType($dbtype, $size ?: '');
+		
+		// Return the result as an object.
+		return (object)array(
+			'name' => $column_name,
+			'dbtype' => $dbtype,
+			'xetype' => $xetype,
+			'size' => $size,
+			'default_value' => $column_info->{'Default'},
+			'notnull' => strncmp($column_info->{'Null'}, 'NO', 2) == 0 ? true : false,
+		);
 	}
 	
 	/**
diff --git a/common/framework/parsers/dbtableparser.php b/common/framework/parsers/dbtableparser.php
index f91f6a1e8..1d1b395b5 100644
--- a/common/framework/parsers/dbtableparser.php
+++ b/common/framework/parsers/dbtableparser.php
@@ -226,6 +226,7 @@ class DBTableParser extends BaseParser
 	 */
 	public static function getXEType(string $type, string $size): string
 	{
+		$type = strtolower($type);
 		switch ($type)
 		{
 			case 'bigint':