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authorDaniel J Walsh <dwalsh@redhat.com>2017-11-20 14:45:01 -0500
committerGitHub <noreply@github.com>2017-11-20 14:45:01 -0500
commit6e0944f2f128534caaf884251d1e42fa4f1ba235 (patch)
tree4ecca5c1388b93de16b1dd91244ffb3488b0ddd1 /vendor/github.com/mattn/go-sqlite3/backup.go
parent3e04604dc2619b1502b609083c3b6ecb0949f1d5 (diff)
parentf2894eda689a24c069b55b1e2ad3e6136836b326 (diff)
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Merge pull request #26 from mheon/sql_state
Implementation of SQL-backed state
Diffstat (limited to 'vendor/github.com/mattn/go-sqlite3/backup.go')
-rw-r--r--vendor/github.com/mattn/go-sqlite3/backup.go85
1 files changed, 85 insertions, 0 deletions
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 000000000..5ab3a54de
--- /dev/null
+++ b/vendor/github.com/mattn/go-sqlite3/backup.go
@@ -0,0 +1,85 @@
+// 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"
+)
+
+// SQLiteBackup implement interface of Backup.
+type SQLiteBackup struct {
+ b *C.sqlite3_backup
+}
+
+// Backup make backup from src to dest.
+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()
+}
+
+// Step to 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
+}
+
+// Remaining return whether have the rest for backup.
+func (b *SQLiteBackup) Remaining() int {
+ return int(C.sqlite3_backup_remaining(b.b))
+}
+
+// PageCount return count of pages.
+func (b *SQLiteBackup) PageCount() int {
+ return int(C.sqlite3_backup_pagecount(b.b))
+}
+
+// Finish close backup.
+func (b *SQLiteBackup) Finish() error {
+ return b.Close()
+}
+
+// Close close backup.
+func (b *SQLiteBackup) Close() error {
+ ret := C.sqlite3_backup_finish(b.b)
+
+ // sqlite3_backup_finish() never fails, it just returns the
+ // error code from previous operations, so clean up before
+ // checking and returning an error
+ b.b = nil
+ runtime.SetFinalizer(b, nil)
+
+ if ret != 0 {
+ return Error{Code: ErrNo(ret)}
+ }
+ return nil
+}