Add sqlite_dbpage extension build tag

Author: hifi

.github/workflows/go.yaml

@@ -44,7 +44,7 @@ jobs:
         run: go-acc . -- -race -v -tags "libsqlite3"
 
       - name: 'Tags: full'
-        run: go-acc . -- -race -v -tags "sqlite_allow_uri_authority sqlite_app_armor sqlite_column_metadata sqlite_foreign_keys sqlite_fts5 sqlite_icu sqlite_introspect sqlite_json sqlite_math_functions sqlite_os_trace sqlite_preupdate_hook sqlite_secure_delete sqlite_see sqlite_stat4 sqlite_trace sqlite_unlock_notify sqlite_userauth sqlite_vacuum_incr sqlite_vtable"
+        run: go-acc . -- -race -v -tags "sqlite_allow_uri_authority sqlite_app_armor sqlite_column_metadata sqlite_foreign_keys sqlite_fts5 sqlite_icu sqlite_introspect sqlite_json sqlite_math_functions sqlite_os_trace sqlite_preupdate_hook sqlite_secure_delete sqlite_see sqlite_stat4 sqlite_trace sqlite_unlock_notify sqlite_userauth sqlite_vacuum_incr sqlite_vtable sqlite_dbpage"
 
       - name: 'Tags: vacuum'
         run: go-acc . -- -race -v -tags "sqlite_vacuum_full"
@@ -99,7 +99,7 @@ jobs:
       - name: 'Tags: full'
         run: |
           echo 'skip this test'
-          echo go build -race -v -tags "sqlite_allow_uri_authority sqlite_app_armor sqlite_column_metadata sqlite_foreign_keys sqlite_fts5 sqlite_icu sqlite_introspect sqlite_json sqlite_math_functions sqlite_preupdate_hook sqlite_secure_delete sqlite_see sqlite_stat4 sqlite_trace sqlite_unlock_notify sqlite_userauth sqlite_vacuum_incr sqlite_vtable"
+          echo go build -race -v -tags "sqlite_allow_uri_authority sqlite_app_armor sqlite_column_metadata sqlite_foreign_keys sqlite_fts5 sqlite_icu sqlite_introspect sqlite_json sqlite_math_functions sqlite_preupdate_hook sqlite_secure_delete sqlite_see sqlite_stat4 sqlite_trace sqlite_unlock_notify sqlite_userauth sqlite_vacuum_incr sqlite_vtable sqlite_dbpage"
         shell: msys2 {0}
 
       - name: 'Tags: vacuum'

README.md

@@ -180,6 +180,7 @@ go build -tags "icu json1 fts5 secure_delete"
 | Tracing / Debug | sqlite_trace | Activate trace functions |
 | User Authentication | sqlite_userauth | SQLite User Authentication see [User Authentication](#user-authentication) for more information. |
 | Virtual Tables | sqlite_vtable | SQLite Virtual Tables see [SQLite Official VTABLE Documentation](https://www.sqlite.org/vtab.html) for more information, and a [full example here](https://github.com/mattn/go-sqlite3/tree/master/_example/vtable) |
+| SQLITE_DBPAGE Virtual Table | sqlite_dbpage | SQLITE_DBPAGE Virtual Table see [SQLite Official SQLITE_DBPAGE Documentation](https://www.sqlite.org/dbpage.html) for more information. |
 
 # Compilation
 

sqlite3_opt_dbpage.go

@@ -0,0 +1,15 @@
+// Copyright (C) 2019 Yasuhiro Matsumoto <[email protected]>.
+//
+// Use of this source code is governed by an MIT-style
+// license that can be found in the LICENSE file.
+
+//go:build sqlite_dbpage
+// +build sqlite_dbpage
+
+package sqlite3
+
+/*
+#cgo CFLAGS: -DSQLITE_ENABLE_DBPAGE_VTAB
+#cgo LDFLAGS: -lm
+*/
+import "C"

sqlite3_opt_dbpage_test.go

@@ -0,0 +1,89 @@
+// Copyright (C) 2019 Yasuhiro Matsumoto <[email protected]>.
+//
+// Use of this source code is governed by an MIT-style
+// license that can be found in the LICENSE file.
+
+//go:build cgo
+// +build cgo
+
+package sqlite3
+
+import (
+	"database/sql"
+	"os"
+	"testing"
+)
+
+func TestDbpage(t *testing.T) {
+	sourceFilename := TempFilename(t)
+	defer os.Remove(sourceFilename)
+
+	destFilename := TempFilename(t)
+	defer os.Remove(destFilename)
+
+	db, err := sql.Open("sqlite3", sourceFilename)
+	if err != nil {
+		t.Fatal("Failed to open database:", err)
+	}
+	defer db.Close()
+
+	if _, err = db.Exec("PRAGMA journal_mode=WAL"); err != nil {
+		t.Fatal("Failed to Exec PRAGMA journal_mode:", err)
+	} else if _, err := db.Exec("CREATE TABLE foo(data TEXT)"); err != nil {
+		t.Fatal("Failed to create table:", err)
+	} else if _, err := db.Exec("INSERT INTO foo(data) VALUES(?)", "hello sqlite_dbpage"); err != nil {
+		t.Fatal("Failed to create table:", err)
+	}
+
+	rows, err := db.Query("SELECT data FROM sqlite_dbpage")
+	if err != nil && err.Error() == "no such table: sqlite_dbpage" {
+		t.Skip("sqlite_dbpage not supported")
+	} else if err != nil {
+		t.Fatal("Unable to query sqlite_dbpage table:", err)
+	}
+	defer rows.Close()
+
+	destFile, err := os.OpenFile(destFilename, os.O_CREATE|os.O_WRONLY, 0700)
+	if err != nil {
+		t.Fatal("Unable to open file for writing:", err)
+	}
+	defer destFile.Close()
+
+	for rows.Next() {
+		var page []byte
+		if err := rows.Scan(&page); err != nil {
+			t.Fatal("Unable to scan results:", err)
+		}
+
+		if _, err := destFile.Write(page); err != nil {
+			t.Fatal("Unable to write page to file:", err)
+		}
+	}
+	if err := rows.Close(); err != nil {
+		t.Fatal("Unable to close rows:", err)
+	} else if err := db.Close(); err != nil {
+		t.Fatal("Unable to close database:", err)
+	} else if err := destFile.Close(); err != nil {
+		t.Fatal("Unable to close file:", err)
+	}
+
+	db, err = sql.Open("sqlite3", destFilename)
+	if err != nil {
+		t.Fatal("Failed to open database:", err)
+	}
+	defer db.Close()
+
+	var result string
+	if err = db.QueryRow("PRAGMA integrity_check").Scan(&result); err != nil {
+		t.Fatal("Failed to query PRAGMA integrity_check:", err)
+	} else if result != "ok" {
+		t.Fatal("Copied database integrity check failed:", result)
+	}
+
+	var hello string
+	if err = db.QueryRow("SELECT data FROM foo").Scan(&hello); err != nil {
+		t.Fatal("Failed to query data:", err)
+	} else if hello != "hello sqlite_dbpage" {
+		t.Fatal("Unable to find expected data:", hello)
+	}
+}