CLI to export/import any database to/from SQLite (#2496)

* CLI to export/import any database to/from SQLite

Require PHP 5.5+ https://github.com/FreshRSS/FreshRSS/pull/2495

* Travis

* Execution rights

* Fix wrong static fields

* Fix MySQL bad default buffering

https://stackoverflow.com/questions/6895098/pdo-mysql-memory-consumption-with-large-result-set/6935271#6935271
https://php.net/manual/ref.pdo-mysql

* Fix count on progression

* Avoid static DB information

To ease working with two DBs at the same time

* Less static, simplify

Needs some testing

* Small corrections

* Special case for SQLite to SQLite

* Modify special case for SQLite

* Remove special case for SQLite

More uniform logic for the 3 databases.
Fix wrong DROP TABLE for SQLite.

* Drop indexes

* Revert "Drop indexes"

This reverts commit f28d2bae0935745c1c74ea38f2ee083f3fd4bf9d.

* Fix deletion

* Fix classic export

* Update cli/README.md

Co-Authored-By: Marien Fressinaud <dev@marienfressinaud.fr>

* Addressing part of review

* Remove goto :cry:

* Travis

* Comment for SQLite case

* Fix missing fields when inserting

1 files changed, 13 insertions, 1 deletions

diff --git a/app/Models/CategoryDAO.php b/app/Models/CategoryDAO.php
index 6535adae7..b0fcb5033 100644
--- a/app/Models/CategoryDAO.php
+++ b/app/Models/CategoryDAO.php
@@ -77,6 +77,15 @@ class FreshRSS_CategoryDAO extends Minz_ModelPdo implements FreshRSS_Searchable
 		}
 	}
 
+	public function selectAll() {
+		$sql = 'SELECT id, name FROM `' . $this->prefix . 'category`';
+		$stm = $this->bd->prepare($sql);
+		$stm->execute();
+		while ($row = $stm->fetch(PDO::FETCH_ASSOC)) {
+			yield $row;
+		}
+	}
+
 	public function searchById($id) {
 		$sql = 'SELECT * FROM `' . $this->prefix . 'category` WHERE id=?';
 		$stm = $this->bd->prepare($sql);
@@ -96,6 +105,9 @@ class FreshRSS_CategoryDAO extends Minz_ModelPdo implements FreshRSS_Searchable
 	public function searchByName($name) {
 		$sql = 'SELECT * FROM `' . $this->prefix . 'category` WHERE name=?';
 		$stm = $this->bd->prepare($sql);
+		if ($stm == false) {
+			return false;
+		}
 
 		$values = array($name);
 
@@ -156,7 +168,7 @@ class FreshRSS_CategoryDAO extends Minz_ModelPdo implements FreshRSS_Searchable
 			$cat->_id(self::DEFAULTCATEGORYID);
 
 			$sql = 'INSERT INTO `' . $this->prefix . 'category`(id, name) VALUES(?, ?)';
-			if (parent::$sharedDbType === 'pgsql') {
+			if ($this->bd->dbType() === 'pgsql') {
 				//Force call to nextval()
 				$sql .= ' RETURNING nextval(\'"' . $this->prefix . 'category_id_seq"\');';
 			}