From 030ff273473f0a5620ba276a370e5119f57179df Mon Sep 17 00:00:00 2001
From: Niall Sheridan <nsheridan@gmail.com>
Date: Mon, 8 Aug 2016 23:39:46 +0100
Subject: SQLite DB support

---
 vendor/github.com/mattn/go-sqlite3/backup.go | 74 ++++++++++++++++++++++++++++
 1 file changed, 74 insertions(+)
 create mode 100644 vendor/github.com/mattn/go-sqlite3/backup.go

(limited to 'vendor/github.com/mattn/go-sqlite3/backup.go')

diff --git a/vendor/github.com/mattn/go-sqlite3/backup.go b/vendor/github.com/mattn/go-sqlite3/backup.go
new file mode 100644
index 0000000..4c1e38c
--- /dev/null
+++ b/vendor/github.com/mattn/go-sqlite3/backup.go
@@ -0,0 +1,74 @@
+// Copyright (C) 2014 Yasuhiro Matsumoto <mattn.jp@gmail.com>.
+//
+// Use of this source code is governed by an MIT-style
+// license that can be found in the LICENSE file.
+
+package sqlite3
+
+/*
+#ifndef USE_LIBSQLITE3
+#include <sqlite3-binding.h>
+#else
+#include <sqlite3.h>
+#endif
+#include <stdlib.h>
+*/
+import "C"
+import (
+	"runtime"
+	"unsafe"
+)
+
+type SQLiteBackup struct {
+	b *C.sqlite3_backup
+}
+
+func (c *SQLiteConn) Backup(dest string, conn *SQLiteConn, src string) (*SQLiteBackup, error) {
+	destptr := C.CString(dest)
+	defer C.free(unsafe.Pointer(destptr))
+	srcptr := C.CString(src)
+	defer C.free(unsafe.Pointer(srcptr))
+
+	if b := C.sqlite3_backup_init(c.db, destptr, conn.db, srcptr); b != nil {
+		bb := &SQLiteBackup{b: b}
+		runtime.SetFinalizer(bb, (*SQLiteBackup).Finish)
+		return bb, nil
+	}
+	return nil, c.lastError()
+}
+
+// Backs up for one step. Calls the underlying `sqlite3_backup_step` function.
+// This function returns a boolean indicating if the backup is done and
+// an error signalling any other error. Done is returned if the underlying C
+// function returns SQLITE_DONE (Code 101)
+func (b *SQLiteBackup) Step(p int) (bool, error) {
+	ret := C.sqlite3_backup_step(b.b, C.int(p))
+	if ret == C.SQLITE_DONE {
+		return true, nil
+	} else if ret != 0 && ret != C.SQLITE_LOCKED && ret != C.SQLITE_BUSY {
+		return false, Error{Code: ErrNo(ret)}
+	}
+	return false, nil
+}
+
+func (b *SQLiteBackup) Remaining() int {
+	return int(C.sqlite3_backup_remaining(b.b))
+}
+
+func (b *SQLiteBackup) PageCount() int {
+	return int(C.sqlite3_backup_pagecount(b.b))
+}
+
+func (b *SQLiteBackup) Finish() error {
+	return b.Close()
+}
+
+func (b *SQLiteBackup) Close() error {
+	ret := C.sqlite3_backup_finish(b.b)
+	if ret != 0 {
+		return Error{Code: ErrNo(ret)}
+	}
+	b.b = nil
+	runtime.SetFinalizer(b, nil)
+	return nil
+}
-- 
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