Merge pull request #573 from GJRTimmer/fix/pragma

Added PRAGMA's

README.md

@@ -68,15 +68,31 @@ Options can be given using the following format: `KEYWORD=VALUE` and multiple op
 
 This library supports dsn options of SQLite itself and provides additional options.
 
+Boolean values can be one of:
+* `0` `no` `false` `off`
+* `1` `yes` `true` `on`
+
 | Name | Key | Value(s) | Description |
 |------|-----|----------|-------------|
-| Shared-Cache Mode | cache | <ul><li>shared</li><li>private</li></ul> | Set cache mode for more information see [sqlite.org](https://www.sqlite.org/sharedcache.html) |
-| Time Zone Location | _loc | auto | Specify location of time format. |
-| Busy Timeout | _busy_timeout | `int` | Specify value for sqlite3_busy_timeout. |
-| Transaction Lock | _txlock | <ul><li>immediate</li><li>deferred</li><li>exclusive</li></ul> | Specify locking behavior for transactions. |
-| Foreign Keys | _foreign_keys | <ul><li>0</li><li>1</li></ul> | Enable or disable enforcement of foreign keys. |
-| Recursive Triggers | _recursive_triggers | <ul><li>0</li><li>1</li></ul> | Enable or disable recursive triggers. |
-| Mutex Locking | _mutex | <ul><li>no</li><li>full</li></ul> | Specify mutex mode. |
+| Auto Vacuum | `_auto_vacuum` \| `_vacuum` | <ul><li>`0` \| `none`</li><li>`1` \| `full`</li><li>`2` \| `incremental`</li></ul> | For more information see [PRAGMA auto_vacuum](https://www.sqlite.org/pragma.html#pragma_auto_vacuum) |
+| Busy Timeout | `_busy_timeout` \| `_timeout` | `int` | Specify value for sqlite3_busy_timeout. For more information see [PRAGMA busy_timeout](https://www.sqlite.org/pragma.html#pragma_busy_timeout) |
+| Case Sensitive LIKE | `_case_sensitive_like` \| `_cslike` | `boolean` | For more information see [PRAGMA case_sensitive_like](https://www.sqlite.org/pragma.html#pragma_case_sensitive_like) |
+| Defer Foreign Keys | `_defer_foreign_keys` \| `_defer_fk` | `boolean` | For more information see [PRAGMA defer_foreign_keys](https://www.sqlite.org/pragma.html#pragma_defer_foreign_keys) |
+| Foreign Keys | `_foreign_keys` \| `_fk` | `boolean` | For more information see [PRAGMA foreign_keys](https://www.sqlite.org/pragma.html#pragma_foreign_keys) |
+| Ignore CHECK Constraints | `_ignore_check_constraints` | `boolean` | For more information see [PRAGMA ignore_check_constraints](https://www.sqlite.org/pragma.html#pragma_ignore_check_constraints) |
+| Immutable | `immutable` | `boolean` | For more information see [Immutable](https://www.sqlite.org/c3ref/open.html) |
+| Journal Mode | `_journal_mode` \| `_journal` | <ul><li>DELETE</li><li>TRUNCATE</li><li>PERSIST</li><li>MEMORY</li><li>WAL</li><li>OFF</li></ul> | For more information see [PRAGMA journal_mode](https://www.sqlite.org/pragma.html#pragma_journal_mode) |
+| Locking Mode | `_locking_mode` \| `_locking` | <ul><li>NORMAL</li><li>EXCLUSIVE</li></ul> | For more information see [PRAGMA locking_mode](https://www.sqlite.org/pragma.html#pragma_locking_mode) |
+| Mode | `mode` | <ul><li>ro</li><li>rw</li><li>rwc</li><li>memory</li></ul> | Access Mode of the database. For more information see [SQLite Open](https://www.sqlite.org/c3ref/open.html) |
+| Mutex Locking | `_mutex` | <ul><li>no</li><li>full</li></ul> | Specify mutex mode. |
+| Query Only | `_query_only` | `boolean` | For more information see [PRAGMA query_only](https://www.sqlite.org/pragma.html#pragma_query_only) |
+| Recursive Triggers | `_recursive_triggers` \| `_rt` | `boolean` | For more information see [PRAGMA recursive_triggers](https://www.sqlite.org/pragma.html#pragma_recursive_triggers) |
+| Secure Delete | `_secure_delete` | `boolean` \| `FAST` | For more information see [PRAGMA secure_delete](https://www.sqlite.org/pragma.html#pragma_secure_delete) |
+| Shared-Cache Mode | `cache` | <ul><li>shared</li><li>private</li></ul> | Set cache mode for more information see [sqlite.org](https://www.sqlite.org/sharedcache.html) |
+| Synchronous | `_synchronous` \| `_sync` | <ul><li>0 \| OFF</li><li>1 \| NORMAL</li><li>2 \| FULL</li><li>3 \| EXTRA</li></ul> | For more information see [PRAGMA synchronous](https://www.sqlite.org/pragma.html#pragma_synchronous) |
+| Time Zone Location | `_loc` | auto | Specify location of time format. |
+| Transaction Lock | `_txlock` | <ul><li>immediate</li><li>deferred</li><li>exclusive</li></ul> | Specify locking behavior for transactions. |
+| Writable Schema | `_writable_schema` | `Boolean` | When this pragma is on, the SQLITE_MASTER tables in which database can be changed using ordinary UPDATE, INSERT, and DELETE statements. Warning: misuse of this pragma can easily result in a corrupt database file. |
 
 ## DSN Examples
 
@@ -124,6 +140,7 @@ go build --tags "icu json1 fts5 secure_delete"
 | Introspect PRAGMAS | sqlite_introspect | This option adds some extra PRAGMA statements. <ul><li>PRAGMA function_list</li><li>PRAGMA module_list</li><li>PRAGMA pragma_list</li></ul> |
 | JSON SQL Functions | sqlite_json | When this option is defined in the amalgamation, the JSON SQL functions are added to the build automatically |
 | Secure Delete | sqlite_secure_delete | This compile-time option changes the default setting of the secure_delete pragma.<br><br>When this option is not used, secure_delete defaults to off. When this option is present, secure_delete defaults to on.<br><br>The secure_delete setting causes deleted content to be overwritten with zeros. There is a small performance penalty since additional I/O must occur.<br><br>On the other hand, secure_delete can prevent fragments of sensitive information from lingering in unused parts of the database file after it has been deleted. See the documentation on the secure_delete pragma for additional information |
+| Secure Delete (FAST) | sqlite_secure_delete_fast | For more information see [PRAGMA secure_delete](https://www.sqlite.org/pragma.html#pragma_secure_delete) |
 | Tracing / Debug | sqlite_trace | Activate trace functions |
 
 # Compilation

sqlite3.go

@@ -1,4 +1,5 @@
 // Copyright (C) 2014 Yasuhiro Matsumoto <mattn.jp@gmail.com>.
+// Copyright (C) 2018 G.J.R. Timmer <gjr.timmer@gmail.com>.
 //
 // Use of this source code is governed by an MIT-style
 // license that can be found in the LICENSE file.
@@ -779,36 +780,135 @@ func errorString(err Error) string {
 }
 
 // Open database and return a new connection.
+//
+// A pragma can take either zero or one argument.
+// The argument is may be either in parentheses or it may be separated from
+// the pragma name by an equal sign. The two syntaxes yield identical results.
+// In many pragmas, the argument is a boolean. The boolean can be one of:
+//    1 yes true on
+//    0 no false off
+//
 // You can specify a DSN string using a URI as the filename.
 //   test.db
 //   file:test.db?cache=shared&mode=memory
 //   :memory:
 //   file::memory:
+//
+//   mode
+//     Access mode of the database.
+//     https://www.sqlite.org/c3ref/open.html
+//     Values:
+//      - ro
+//      - rw
+//      - rwc
+//      - memory
+//
+//   shared
+//     SQLite Shared-Cache Mode
+//     https://www.sqlite.org/sharedcache.html
+//     Values:
+//       - shared
+//       - private
+//
+//   immutable=Boolean
+//     The immutable parameter is a boolean query parameter that indicates
+//     that the database file is stored on read-only media. When immutable is set,
+//     SQLite assumes that the database file cannot be changed,
+//     even by a process with higher privilege,
+//     and so the database is opened read-only and all locking and change detection is disabled.
+//     Caution: Setting the immutable property on a database file that
+//     does in fact change can result in incorrect query results and/or SQLITE_CORRUPT errors.
+//
 // go-sqlite3 adds the following query parameters to those used by SQLite:
 //   _loc=XXX
 //     Specify location of time format. It's possible to specify "auto".
-//   _busy_timeout=XXX
-//     Specify value for sqlite3_busy_timeout.
+//
+//   _mutex=XXX
+//     Specify mutex mode. XXX can be "no", "full".
+//
 //   _txlock=XXX
 //     Specify locking behavior for transactions.  XXX can be "immediate",
 //     "deferred", "exclusive".
-//   _foreign_keys=X
-//     Enable or disable enforcement of foreign keys.  X can be 1 or 0.
-//   _recursive_triggers=X
-//     Enable or disable recursive triggers.  X can be 1 or 0.
-//   _mutex=XXX
-//     Specify mutex mode. XXX can be "no", "full".
+//
+//   _auto_vacuum=X | _vacuum=X
+//     0 | none - Auto Vacuum disabled
+//     1 | full - Auto Vacuum FULL
+//     2 | incremental - Auto Vacuum Incremental
+//
+//   _busy_timeout=XXX"| _timeout=XXX
+//     Specify value for sqlite3_busy_timeout.
+//
+//   _case_sensitive_like=Boolean | _cslike=Boolean
+//     https://www.sqlite.org/pragma.html#pragma_case_sensitive_like
+//     Default or disabled the LIKE operation is case-insensitive.
+//     When enabling this options behaviour of LIKE will become case-sensitive.
+//
+//   _defer_foreign_keys=Boolean | _defer_fk=Boolean
+//     Defer Foreign Keys until outermost transaction is committed.
+//
+//   _foreign_keys=Boolean | _fk=Boolean
+//     Enable or disable enforcement of foreign keys.
+//
+//   _ignore_check_constraints=Boolean
+//     This pragma enables or disables the enforcement of CHECK constraints.
+//     The default setting is off, meaning that CHECK constraints are enforced by default.
+//
+//   _journal_mode=MODE | _journal=MODE
+//     Set journal mode for the databases associated with the current connection.
+//     https://www.sqlite.org/pragma.html#pragma_journal_mode
+//
+//   _locking_mode=X | _locking=X
+//     Sets the database connection locking-mode.
+//     The locking-mode is either NORMAL or EXCLUSIVE.
+//     https://www.sqlite.org/pragma.html#pragma_locking_mode
+//
+//   _query_only=Boolean
+//     The query_only pragma prevents all changes to database files when enabled.
+//
+//   _recursive_triggers=Boolean | _rt=Boolean
+//     Enable or disable recursive triggers.
+//
+//   _secure_delete=Boolean|FAST
+//     When secure_delete is on, SQLite overwrites deleted content with zeros.
+//     https://www.sqlite.org/pragma.html#pragma_secure_delete
+//
+//   _synchronous=X | _sync=X
+//     Change the setting of the "synchronous" flag.
+//     https://www.sqlite.org/pragma.html#pragma_synchronous
+//
+//   _writable_schema=Boolean
+//     When this pragma is on, the SQLITE_MASTER tables in which database
+//     can be changed using ordinary UPDATE, INSERT, and DELETE statements.
+//     Warning: misuse of this pragma can easily result in a corrupt database file.
+//
+//
 func (d *SQLiteDriver) Open(dsn string) (driver.Conn, error) {
 	if C.sqlite3_threadsafe() == 0 {
 		return nil, errors.New("sqlite library was not compiled for thread-safe operation")
 	}
 
+	var pkey string
+
+	// Options
 	var loc *time.Location
-	txlock := "BEGIN"
-	busyTimeout := 5000
-	foreignKeys := -1
-	recursiveTriggers := -1
 	mutex := C.int(C.SQLITE_OPEN_FULLMUTEX)
+	txlock := "BEGIN"
+
+	// PRAGMA's
+	autoVacuum := -1
+	busyTimeout := 5000
+	caseSensitiveLike := -1
+	deferForeignKeys := -1
+	foreignKeys := -1
+	ignoreCheckConstraints := -1
+	journalMode := "DELETE"
+	lockingMode := "NORMAL"
+	queryOnly := -1
+	recursiveTriggers := -1
+	secureDelete := "DEFAULT"
+	synchronousMode := "NORMAL"
+	writableSchema := -1
+
 	pos := strings.IndexRune(dsn, '?')
 	if pos >= 1 {
 		params, err := url.ParseQuery(dsn[pos+1:])
@@ -818,9 +918,10 @@ func (d *SQLiteDriver) Open(dsn string) (driver.Conn, error) {
 
 		// _loc
 		if val := params.Get("_loc"); val != "" {
-			if val == "auto" {
+			switch strings.ToLower(val) {
+			case "auto":
 				loc = time.Local
-			} else {
+			default:
 				loc, err = time.LoadLocation(val)
 				if err != nil {
 					return nil, fmt.Errorf("Invalid _loc: %v: %v", val, err)
@@ -828,18 +929,21 @@ func (d *SQLiteDriver) Open(dsn string) (driver.Conn, error) {
 			}
 		}
 
-		// _busy_timeout
-		if val := params.Get("_busy_timeout"); val != "" {
-			iv, err := strconv.ParseInt(val, 10, 64)
-			if err != nil {
-				return nil, fmt.Errorf("Invalid _busy_timeout: %v: %v", val, err)
+		// _mutex
+		if val := params.Get("_mutex"); val != "" {
+			switch strings.ToLower(val) {
+			case "no":
+				mutex = C.SQLITE_OPEN_NOMUTEX
+			case "full":
+				mutex = C.SQLITE_OPEN_FULLMUTEX
+			default:
+				return nil, fmt.Errorf("Invalid _mutex: %v", val)
 			}
-			busyTimeout = int(iv)
 		}
 
 		// _txlock
 		if val := params.Get("_txlock"); val != "" {
-			switch val {
+			switch strings.ToLower(val) {
 			case "immediate":
 				txlock = "BEGIN IMMEDIATE"
 			case "exclusive":
@@ -851,39 +955,262 @@ func (d *SQLiteDriver) Open(dsn string) (driver.Conn, error) {
 			}
 		}
 
-		// _foreign_keys
-		if val := params.Get("_foreign_keys"); val != "" {
-			switch val {
-			case "1":
-				foreignKeys = 1
-			case "0":
+		// Auto Vacuum (_vacuum)
+		//
+		// https://www.sqlite.org/pragma.html#pragma_auto_vacuum
+		//
+		pkey = "" // Reset pkey
+		if _, ok := params["_auto_vacuum"]; ok {
+			pkey = "_auto_vacuum"
+		}
+		if _, ok := params["_vacuum"]; ok {
+			pkey = "_vacuum"
+		}
+		if val := params.Get(pkey); val != "" {
+			switch strings.ToLower(val) {
+			case "0", "none":
+				autoVacuum = 0
+			case "1", "full":
+				autoVacuum = 1
+			case "2", "incremental":
+				autoVacuum = 2
+			default:
+				return nil, fmt.Errorf("Invalid _auto_vacuum: %v, expecting value of '0 NONE 1 FULL 2 INCREMENTAL'", val)
+			}
+		}
+
+		// Busy Timeout (_busy_timeout)
+		//
+		// https://www.sqlite.org/pragma.html#pragma_busy_timeout
+		//
+		pkey = "" // Reset pkey
+		if _, ok := params["_busy_timeout"]; ok {
+			pkey = "_busy_timeout"
+		}
+		if _, ok := params["_timeout"]; ok {
+			pkey = "_timeout"
+		}
+		if val := params.Get(pkey); val != "" {
+			iv, err := strconv.ParseInt(val, 10, 64)
+			if err != nil {
+				return nil, fmt.Errorf("Invalid _busy_timeout: %v: %v", val, err)
+			}
+			busyTimeout = int(iv)
+		}
+
+		// Case Sensitive Like (_cslike)
+		//
+		// https://www.sqlite.org/pragma.html#pragma_case_sensitive_like
+		//
+		pkey = "" // Reset pkey
+		if _, ok := params["_case_sensitive_like"]; ok {
+			pkey = "_case_sensitive_like"
+		}
+		if _, ok := params["_cslike"]; ok {
+			pkey = "_cslike"
+		}
+		if val := params.Get(pkey); val != "" {
+			switch strings.ToLower(val) {
+			case "0", "no", "false", "off":
+				caseSensitiveLike = 0
+			case "1", "yes", "true", "on":
+				caseSensitiveLike = 1
+			default:
+				return nil, fmt.Errorf("Invalid _case_sensitive_like: %v, expecting boolean value of '0 1 false true no yes off on'", val)
+			}
+		}
+
+		// Defer Foreign Keys (_defer_foreign_keys | _defer_fk)
+		//
+		// https://www.sqlite.org/pragma.html#pragma_defer_foreign_keys
+		//
+		pkey = "" // Reset pkey
+		if _, ok := params["_defer_foreign_keys"]; ok {
+			pkey = "_defer_foreign_keys"
+		}
+		if _, ok := params["_defer_fk"]; ok {
+			pkey = "_defer_fk"
+		}
+		if val := params.Get(pkey); val != "" {
+			switch strings.ToLower(val) {
+			case "0", "no", "false", "off":
+				deferForeignKeys = 0
+			case "1", "yes", "true", "on":
+				deferForeignKeys = 1
+			default:
+				return nil, fmt.Errorf("Invalid _defer_foreign_keys: %v, expecting boolean value of '0 1 false true no yes off on'", val)
+			}
+		}
+
+		// Foreign Keys (_foreign_keys | _fk)
+		//
+		// https://www.sqlite.org/pragma.html#pragma_foreign_keys
+		//
+		pkey = "" // Reset pkey
+		if _, ok := params["_foreign_keys"]; ok {
+			pkey = "_foreign_keys"
+		}
+		if _, ok := params["_fk"]; ok {
+			pkey = "_fk"
+		}
+		if val := params.Get(pkey); val != "" {
+			switch strings.ToLower(val) {
+			case "0", "no", "false", "off":
 				foreignKeys = 0
+			case "1", "yes", "true", "on":
+				foreignKeys = 1
 			default:
-				return nil, fmt.Errorf("Invalid _foreign_keys: %v", val)
+				return nil, fmt.Errorf("Invalid _foreign_keys: %v, expecting boolean value of '0 1 false true no yes off on'", val)
 			}
 		}
 
-		// _recursive_triggers
-		if val := params.Get("_recursive_triggers"); val != "" {
-			switch val {
-			case "1":
-				recursiveTriggers = 1
-			case "0":
+		// Ignore CHECK Constrains (_ignore_check_constraints)
+		//
+		// https://www.sqlite.org/pragma.html#pragma_ignore_check_constraints
+		//
+		if val := params.Get("_ignore_check_constraints"); val != "" {
+			switch strings.ToLower(val) {
+			case "0", "no", "false", "off":
+				ignoreCheckConstraints = 0
+			case "1", "yes", "true", "on":
+				ignoreCheckConstraints = 1
+			default:
+				return nil, fmt.Errorf("Invalid _ignore_check_constraints: %v, expecting boolean value of '0 1 false true no yes off on'", val)
+			}
+		}
+
+		// Journal Mode (_journal_mode | _journal)
+		//
+		// https://www.sqlite.org/pragma.html#pragma_journal_mode
+		//
+		pkey = "" // Reset pkey
+		if _, ok := params["_journal_mode"]; ok {
+			pkey = "_journal_mode"
+		}
+		if _, ok := params["_journal"]; ok {
+			pkey = "_journal"
+		}
+		if val := params.Get(pkey); val != "" {
+			switch strings.ToUpper(val) {
+			case "DELETE", "TRUNCATE", "PERSIST", "MEMORY", "OFF":
+				journalMode = strings.ToUpper(val)
+			case "WAL":
+				journalMode = strings.ToUpper(val)
+
+				// For WAL Mode set Synchronous Mode to 'NORMAL'
+				// See https://www.sqlite.org/pragma.html#pragma_synchronous
+				synchronousMode = "NORMAL"
+			default:
+				return nil, fmt.Errorf("Invalid _journal: %v, expecting value of 'DELETE TRUNCATE PERSIST MEMORY WAL OFF'", val)
+			}
+		}
+
+		// Locking Mode (_locking)
+		//
+		// https://www.sqlite.org/pragma.html#pragma_locking_mode
+		//
+		pkey = "" // Reset pkey
+		if _, ok := params["_locking_mode"]; ok {
+			pkey = "_locking_mode"
+		}
+		if _, ok := params["_locking"]; ok {
+			pkey = "_locking"
+		}
+		if val := params.Get("_locking"); val != "" {
+			switch strings.ToUpper(val) {
+			case "NORMAL", "EXCLUSIVE":
+				lockingMode = strings.ToUpper(val)
+			default:
+				return nil, fmt.Errorf("Invalid _locking_mode: %v, expecting value of 'NORMAL EXCLUSIVE", val)
+			}
+		}
+
+		// Query Only (_query_only)
+		//
+		// https://www.sqlite.org/pragma.html#pragma_query_only
+		//
+		if val := params.Get("_query_only"); val != "" {
+			switch strings.ToLower(val) {
+			case "0", "no", "false", "off":
+				queryOnly = 0
+			case "1", "yes", "true", "on":
+				queryOnly = 1
+			default:
+				return nil, fmt.Errorf("Invalid _query_only: %v, expecting boolean value of '0 1 false true no yes off on'", val)
+			}
+		}
+
+		// Recursive Triggers (_recursive_triggers)
+		//
+		// https://www.sqlite.org/pragma.html#pragma_recursive_triggers
+		//
+		pkey = "" // Reset pkey
+		if _, ok := params["_recursive_triggers"]; ok {
+			pkey = "_recursive_triggers"
+		}
+		if _, ok := params["_rt"]; ok {
+			pkey = "_rt"
+		}
+		if val := params.Get(pkey); val != "" {
+			switch strings.ToLower(val) {
+			case "0", "no", "false", "off":
 				recursiveTriggers = 0
+			case "1", "yes", "true", "on":
+				recursiveTriggers = 1
 			default:
-				return nil, fmt.Errorf("Invalid _recursive_triggers: %v", val)
+				return nil, fmt.Errorf("Invalid _recursive_triggers: %v, expecting boolean value of '0 1 false true no yes off on'", val)
 			}
 		}
 
-		// _mutex
-		if val := params.Get("_mutex"); val != "" {
-			switch val {
-			case "no":
-				mutex = C.SQLITE_OPEN_NOMUTEX
-			case "full":
-				mutex = C.SQLITE_OPEN_FULLMUTEX
+		// Secure Delete (_secure_delete)
+		//
+		// https://www.sqlite.org/pragma.html#pragma_secure_delete
+		//
+		if val := params.Get("_secure_delete"); val != "" {
+			switch strings.ToLower(val) {
+			case "0", "no", "false", "off":
+				secureDelete = "OFF"
+			case "1", "yes", "true", "on":
+				secureDelete = "ON"
+			case "fast":
+				secureDelete = "FAST"
 			default:
-				return nil, fmt.Errorf("Invalid _mutex: %v", val)
+				return nil, fmt.Errorf("Invalid _secure_delete: %v, expecting boolean value of '0 1 false true no yes off on fast'", val)
+			}
+		}
+
+		// Synchronous Mode (_synchronous | _sync)
+		//
+		// https://www.sqlite.org/pragma.html#pragma_synchronous
+		//
+		pkey = "" // Reset pkey
+		if _, ok := params["_synchronous"]; ok {
+			pkey = "_synchronous"
+		}
+		if _, ok := params["_sync"]; ok {
+			pkey = "_sync"
+		}
+		if val := params.Get(pkey); val != "" {
+			switch strings.ToUpper(val) {
+			case "0", "OFF", "1", "NORMAL", "2", "FULL", "3", "EXTRA":
+				synchronousMode = strings.ToUpper(val)
+			default:
+				return nil, fmt.Errorf("Invalid _synchronous: %v, expecting value of '0 OFF 1 NORMAL 2 FULL 3 EXTRA'", val)
+			}
+		}
+
+		// Writable Schema (_writeable_schema)
+		//
+		// https://www.sqlite.org/pragma.html#pragma_writeable_schema
+		//
+		if val := params.Get("_writable_schema"); val != "" {
+			switch strings.ToLower(val) {
+			case "0", "no", "false", "off":
+				writableSchema = 0
+			case "1", "yes", "true", "on":
+				writableSchema = 1
+			default:
+				return nil, fmt.Errorf("Invalid _writable_schema: %v, expecting boolean value of '0 1 false true no yes off on'", val)
 			}
 		}
 
@@ -920,24 +1247,101 @@ func (d *SQLiteDriver) Open(dsn string) (driver.Conn, error) {
 		}
 		return nil
 	}
-	if foreignKeys == 0 {
-		if err := exec("PRAGMA foreign_keys = OFF;"); err != nil {
-			C.sqlite3_close_v2(db)
-			return nil, err
-		}
-	} else if foreignKeys == 1 {
-		if err := exec("PRAGMA foreign_keys = ON;"); err != nil {
+
+	// Auto Vacuum
+	if autoVacuum > -1 {
+		if err := exec(fmt.Sprintf("PRAGMA auto_vacuum = %d;", autoVacuum)); err != nil {
 			C.sqlite3_close_v2(db)
 			return nil, err
 		}
 	}
-	if recursiveTriggers == 0 {
-		if err := exec("PRAGMA recursive_triggers = OFF;"); err != nil {
+
+	// Case Sensitive LIKE
+	if caseSensitiveLike > -1 {
+		if err := exec(fmt.Sprintf("PRAGMA case_sensitive_like = %d;", caseSensitiveLike)); err != nil {
 			C.sqlite3_close_v2(db)
 			return nil, err
 		}
-	} else if recursiveTriggers == 1 {
-		if err := exec("PRAGMA recursive_triggers = ON;"); err != nil {
+	}
+
+	// Defer Foreign Keys
+	if deferForeignKeys > -1 {
+		if err := exec(fmt.Sprintf("PRAGMA defer_foreign_keys = %d;", deferForeignKeys)); err != nil {
+			C.sqlite3_close_v2(db)
+			return nil, err
+		}
+	}
+
+	// Forgein Keys
+	if foreignKeys > -1 {
+		if err := exec(fmt.Sprintf("PRAGMA foreign_keys = %d;", foreignKeys)); err != nil {
+			C.sqlite3_close_v2(db)
+			return nil, err
+		}
+	}
+
+	// Ignore CHECK Constraints
+	if ignoreCheckConstraints > -1 {
+		if err := exec(fmt.Sprintf("PRAGMA ignore_check_constraints = %d;", ignoreCheckConstraints)); err != nil {
+			C.sqlite3_close_v2(db)
+			return nil, err
+		}
+	}
+
+	// Journal Mode
+	// Because default Journal Mode is DELETE this PRAGMA can always be executed.
+	if err := exec(fmt.Sprintf("PRAGMA journal_mode = %s;", journalMode)); err != nil {
+		C.sqlite3_close_v2(db)
+		return nil, err
+	}
+
+	// Locking Mode
+	// Because the default is NORMAL and this is not changed in this package
+	// by using the compile time SQLITE_DEFAULT_LOCKING_MODE this PRAGMA can always be executed
+	if err := exec(fmt.Sprintf("PRAGMA locking_mode = %s;", lockingMode)); err != nil {
+		C.sqlite3_close_v2(db)
+		return nil, err
+	}
+
+	// Query Only
+	if queryOnly > -1 {
+		if err := exec(fmt.Sprintf("PRAGMA query_only = %d;", queryOnly)); err != nil {
+			C.sqlite3_close_v2(db)
+			return nil, err
+		}
+	}
+
+	// Recursive Triggers
+	if recursiveTriggers > -1 {
+		if err := exec(fmt.Sprintf("PRAGMA recursive_triggers = %d;", recursiveTriggers)); err != nil {
+			C.sqlite3_close_v2(db)
+			return nil, err
+		}
+	}
+
+	// Secure Delete
+	//
+	// Because this package can set the compile time flag SQLITE_SECURE_DELETE with a build tag
+	// the default value for secureDelete var is 'DEFAULT' this way
+	// you can compile with secure_delete 'ON' and disable it for a specific database connection.
+	if secureDelete != "DEFAULT" {
+		if err := exec(fmt.Sprintf("PRAGMA secure_delete = %s;", secureDelete)); err != nil {
+			C.sqlite3_close_v2(db)
+			return nil, err
+		}
+	}
+
+	// Synchronous Mode
+	//
+	// Because default is NORMAL this statement is always executed
+	if err := exec(fmt.Sprintf("PRAGMA synchronous = %s;", synchronousMode)); err != nil {
+		C.sqlite3_close_v2(db)
+		return nil, err
+	}
+
+	// Writable Schema
+	if writableSchema > -1 {
+		if err := exec(fmt.Sprintf("PRAGMA writable_schema = %d;", writableSchema)); err != nil {
 			C.sqlite3_close_v2(db)
 			return nil, err
 		}

sqlite3_opt_allow_uri_authority.go

@@ -1,4 +1,5 @@
 // Copyright (C) 2014 Yasuhiro Matsumoto <mattn.jp@gmail.com>.
+// Copyright (C) 2018 G.J.R. Timmer <gjr.timmer@gmail.com>.
 //
 // Use of this source code is governed by an MIT-style
 // license that can be found in the LICENSE file.

sqlite3_opt_app_armor.go

@@ -1,5 +1,6 @@
 // Copyright (C) 2014 Yasuhiro Matsumoto <mattn.jp@gmail.com>.
-//
+// Copyright (C) 2018 G.J.R. Timmer <gjr.timmer@gmail.com>.
+
 // Use of this source code is governed by an MIT-style
 // license that can be found in the LICENSE file.
 

sqlite3_opt_foreign_keys.go

@@ -1,4 +1,5 @@
 // Copyright (C) 2014 Yasuhiro Matsumoto <mattn.jp@gmail.com>.
+// Copyright (C) 2018 G.J.R. Timmer <gjr.timmer@gmail.com>.
 //
 // Use of this source code is governed by an MIT-style
 // license that can be found in the LICENSE file.

sqlite3_opt_introspect.go

@@ -1,5 +1,6 @@
 // Copyright (C) 2014 Yasuhiro Matsumoto <mattn.jp@gmail.com>.
-//
+// Copyright (C) 2018 G.J.R. Timmer <gjr.timmer@gmail.com>.
+
 // Use of this source code is governed by an MIT-style
 // license that can be found in the LICENSE file.
 

sqlite3_opt_secure_delete.go

@@ -1,4 +1,5 @@
 // Copyright (C) 2014 Yasuhiro Matsumoto <mattn.jp@gmail.com>.
+// Copyright (C) 2018 G.J.R. Timmer <gjr.timmer@gmail.com>.
 //
 // Use of this source code is governed by an MIT-style
 // license that can be found in the LICENSE file.
@@ -8,7 +9,7 @@
 package sqlite3
 
 /*
-#cgo CFLAGS: -DSQLITE_SECURE_DELETE
+#cgo CFLAGS: -DSQLITE_SECURE_DELETE=1
 #cgo LDFLAGS: -lm
 */
 import "C"

sqlite3_opt_secure_delete_fast.go

@@ -0,0 +1,15 @@
+// Copyright (C) 2014 Yasuhiro Matsumoto <mattn.jp@gmail.com>.
+// Copyright (C) 2018 G.J.R. Timmer <gjr.timmer@gmail.com>.
+//
+// Use of this source code is governed by an MIT-style
+// license that can be found in the LICENSE file.
+
+// +build sqlite_secure_delete_fast
+
+package sqlite3
+
+/*
+#cgo CFLAGS: -DSQLITE_SECURE_DELETE=FAST
+#cgo LDFLAGS: -lm
+*/
+import "C"

sqlite3_opt_stat4.go

@@ -1,4 +1,5 @@
 // Copyright (C) 2014 Yasuhiro Matsumoto <mattn.jp@gmail.com>.
+// Copyright (C) 2018 G.J.R. Timmer <gjr.timmer@gmail.com>.
 //
 // Use of this source code is governed by an MIT-style
 // license that can be found in the LICENSE file.

sqlite3_opt_vacuum_full.go

@@ -1,4 +1,5 @@
 // Copyright (C) 2014 Yasuhiro Matsumoto <mattn.jp@gmail.com>.
+// Copyright (C) 2018 G.J.R. Timmer <gjr.timmer@gmail.com>.
 //
 // Use of this source code is governed by an MIT-style
 // license that can be found in the LICENSE file.

sqlite3_opt_vacuum_incr.go

@@ -1,4 +1,5 @@
 // Copyright (C) 2014 Yasuhiro Matsumoto <mattn.jp@gmail.com>.
+// Copyright (C) 2018 G.J.R. Timmer <gjr.timmer@gmail.com>.
 //
 // Use of this source code is governed by an MIT-style
 // license that can be found in the LICENSE file.