closes #2040
upstream commit: acfa601240
tags/v1.2.0-rc1
@@ -1,9 +1,10 @@ | |||
go-sqlite3 | |||
========== | |||
[](http://godoc.org/github.com/mattn/go-sqlite3) | |||
[](https://travis-ci.org/mattn/go-sqlite3) | |||
[](https://coveralls.io/r/mattn/go-sqlite3?branch=master) | |||
[](http://godoc.org/github.com/mattn/go-sqlite3) | |||
[](https://goreportcard.com/report/github.com/mattn/go-sqlite3) | |||
Description | |||
----------- | |||
@@ -16,11 +17,11 @@ Installation | |||
This package can be installed with the go get command: | |||
go get github.com/mattn/go-sqlite3 | |||
_go-sqlite3_ is *cgo* package. | |||
If you want to build your app using go-sqlite3, you need gcc. | |||
However, if you install _go-sqlite3_ with `go install github.com/mattn/go-sqlite3`, you don't need gcc to build your app anymore. | |||
Documentation | |||
------------- | |||
@@ -45,25 +46,40 @@ FAQ | |||
Use `go build --tags "icu"` | |||
Available extensions: `json1`, `fts5`, `icu` | |||
* Can't build go-sqlite3 on windows 64bit. | |||
> Probably, you are using go 1.0, go1.0 has a problem when it comes to compiling/linking on windows 64bit. | |||
> See: https://github.com/mattn/go-sqlite3/issues/27 | |||
> Probably, you are using go 1.0, go1.0 has a problem when it comes to compiling/linking on windows 64bit. | |||
> See: [#27](https://github.com/mattn/go-sqlite3/issues/27) | |||
* Getting insert error while query is opened. | |||
> You can pass some arguments into the connection string, for example, a URI. | |||
> See: https://github.com/mattn/go-sqlite3/issues/39 | |||
> See: [#39](https://github.com/mattn/go-sqlite3/issues/39) | |||
* Do you want to cross compile? mingw on Linux or Mac? | |||
> See: https://github.com/mattn/go-sqlite3/issues/106 | |||
> See: [#106](https://github.com/mattn/go-sqlite3/issues/106) | |||
> See also: http://www.limitlessfx.com/cross-compile-golang-app-for-windows-from-linux.html | |||
* Want to get time.Time with current locale | |||
Use `loc=auto` in SQLite3 filename schema like `file:foo.db?loc=auto`. | |||
* Can I use this in multiple routines concurrently? | |||
Yes for readonly. But, No for writable. See [#50](https://github.com/mattn/go-sqlite3/issues/50), [#51](https://github.com/mattn/go-sqlite3/issues/51), [#209](https://github.com/mattn/go-sqlite3/issues/209). | |||
* Why is it racy if I use a `sql.Open("sqlite3", ":memory:")` database? | |||
Each connection to :memory: opens a brand new in-memory sql database, so if | |||
the stdlib's sql engine happens to open another connection and you've only | |||
specified ":memory:", that connection will see a brand new database. A | |||
workaround is to use "file::memory:?mode=memory&cache=shared". Every | |||
connection to this string will point to the same in-memory database. See | |||
[#204](https://github.com/mattn/go-sqlite3/issues/204) for more info. | |||
License | |||
------- | |||
@@ -19,10 +19,12 @@ import ( | |||
"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)) | |||
@@ -37,10 +39,10 @@ func (c *SQLiteConn) Backup(dest string, conn *SQLiteConn, src string) (*SQLiteB | |||
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) | |||
// 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 { | |||
@@ -51,18 +53,22 @@ func (b *SQLiteBackup) Step(p int) (bool, error) { | |||
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) | |||
@@ -40,8 +40,8 @@ func callbackTrampoline(ctx *C.sqlite3_context, argc int, argv **C.sqlite3_value | |||
} | |||
//export stepTrampoline | |||
func stepTrampoline(ctx *C.sqlite3_context, argc int, argv **C.sqlite3_value) { | |||
args := (*[(math.MaxInt32 - 1) / unsafe.Sizeof((*C.sqlite3_value)(nil))]*C.sqlite3_value)(unsafe.Pointer(argv))[:argc:argc] | |||
func stepTrampoline(ctx *C.sqlite3_context, argc C.int, argv **C.sqlite3_value) { | |||
args := (*[(math.MaxInt32 - 1) / unsafe.Sizeof((*C.sqlite3_value)(nil))]*C.sqlite3_value)(unsafe.Pointer(argv))[:int(argc):int(argc)] | |||
ai := lookupHandle(uintptr(C.sqlite3_user_data(ctx))).(*aggInfo) | |||
ai.Step(ctx, args) | |||
} | |||
@@ -110,5 +110,3 @@ See the documentation of RegisterFunc for more details. | |||
*/ | |||
package sqlite3 | |||
import "C" |
@@ -7,12 +7,16 @@ package sqlite3 | |||
import "C" | |||
// ErrNo inherit errno. | |||
type ErrNo int | |||
// ErrNoMask is mask code. | |||
const ErrNoMask C.int = 0xff | |||
// ErrNoExtended is extended errno. | |||
type ErrNoExtended int | |||
// Error implement sqlite error code. | |||
type Error struct { | |||
Code ErrNo /* The error code returned by SQLite */ | |||
ExtendedCode ErrNoExtended /* The extended error code returned by SQLite */ | |||
@@ -52,14 +56,17 @@ var ( | |||
ErrWarning = ErrNo(28) /* Warnings from sqlite3_log() */ | |||
) | |||
// Error return error message from errno. | |||
func (err ErrNo) Error() string { | |||
return Error{Code: err}.Error() | |||
} | |||
// Extend return extended errno. | |||
func (err ErrNo) Extend(by int) ErrNoExtended { | |||
return ErrNoExtended(int(err) | (by << 8)) | |||
} | |||
// Error return error message that is extended code. | |||
func (err ErrNoExtended) Error() string { | |||
return Error{Code: ErrNo(C.int(err) & ErrNoMask), ExtendedCode: err}.Error() | |||
} | |||
@@ -121,7 +128,7 @@ var ( | |||
ErrConstraintTrigger = ErrConstraint.Extend(7) | |||
ErrConstraintUnique = ErrConstraint.Extend(8) | |||
ErrConstraintVTab = ErrConstraint.Extend(9) | |||
ErrConstraintRowId = ErrConstraint.Extend(10) | |||
ErrConstraintRowID = ErrConstraint.Extend(10) | |||
ErrNoticeRecoverWAL = ErrNotice.Extend(1) | |||
ErrNoticeRecoverRollback = ErrNotice.Extend(2) | |||
ErrWarningAutoIndex = ErrWarning.Extend(1) | |||
@@ -7,9 +7,10 @@ package sqlite3 | |||
/* | |||
#cgo CFLAGS: -std=gnu99 | |||
#cgo CFLAGS: -DSQLITE_ENABLE_RTREE -DSQLITE_THREADSAFE | |||
#cgo CFLAGS: -DSQLITE_ENABLE_RTREE -DSQLITE_THREADSAFE=1 | |||
#cgo CFLAGS: -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_FTS3_PARENTHESIS -DSQLITE_ENABLE_FTS4_UNICODE61 | |||
#cgo CFLAGS: -DSQLITE_TRACE_SIZE_LIMIT=15 | |||
#cgo CFLAGS: -DSQLITE_DISABLE_INTRINSIC | |||
#cgo CFLAGS: -Wno-deprecated-declarations | |||
#ifndef USE_LIBSQLITE3 | |||
#include <sqlite3-binding.h> | |||
@@ -112,14 +113,17 @@ import ( | |||
"runtime" | |||
"strconv" | |||
"strings" | |||
"sync" | |||
"time" | |||
"unsafe" | |||
"golang.org/x/net/context" | |||
) | |||
// Timestamp formats understood by both this module and SQLite. | |||
// The first format in the slice will be used when saving time values | |||
// into the database. When parsing a string from a timestamp or | |||
// datetime column, the formats are tried in order. | |||
// SQLiteTimestampFormats is timestamp formats understood by both this module | |||
// and SQLite. The first format in the slice will be used when saving time | |||
// values into the database. When parsing a string from a timestamp or datetime | |||
// column, the formats are tried in order. | |||
var SQLiteTimestampFormats = []string{ | |||
// By default, store timestamps with whatever timezone they come with. | |||
// When parsed, they will be returned with the same timezone. | |||
@@ -139,21 +143,22 @@ func init() { | |||
} | |||
// Version returns SQLite library version information. | |||
func Version() (libVersion string, libVersionNumber int, sourceId string) { | |||
func Version() (libVersion string, libVersionNumber int, sourceID string) { | |||
libVersion = C.GoString(C.sqlite3_libversion()) | |||
libVersionNumber = int(C.sqlite3_libversion_number()) | |||
sourceId = C.GoString(C.sqlite3_sourceid()) | |||
return libVersion, libVersionNumber, sourceId | |||
sourceID = C.GoString(C.sqlite3_sourceid()) | |||
return libVersion, libVersionNumber, sourceID | |||
} | |||
// Driver struct. | |||
// SQLiteDriver implement sql.Driver. | |||
type SQLiteDriver struct { | |||
Extensions []string | |||
ConnectHook func(*SQLiteConn) error | |||
} | |||
// Conn struct. | |||
// SQLiteConn implement sql.Conn. | |||
type SQLiteConn struct { | |||
dbMu sync.Mutex | |||
db *C.sqlite3 | |||
loc *time.Location | |||
txlock string | |||
@@ -161,35 +166,34 @@ type SQLiteConn struct { | |||
aggregators []*aggInfo | |||
} | |||
// Tx struct. | |||
// SQLiteTx implemen sql.Tx. | |||
type SQLiteTx struct { | |||
c *SQLiteConn | |||
} | |||
// Stmt struct. | |||
// SQLiteStmt implement sql.Stmt. | |||
type SQLiteStmt struct { | |||
c *SQLiteConn | |||
s *C.sqlite3_stmt | |||
nv int | |||
nn []string | |||
t string | |||
closed bool | |||
cls bool | |||
} | |||
// Result struct. | |||
// SQLiteResult implement sql.Result. | |||
type SQLiteResult struct { | |||
id int64 | |||
changes int64 | |||
} | |||
// Rows struct. | |||
// SQLiteRows implement sql.Rows. | |||
type SQLiteRows struct { | |||
s *SQLiteStmt | |||
nc int | |||
cols []string | |||
decltype []string | |||
cls bool | |||
done chan struct{} | |||
} | |||
type functionInfo struct { | |||
@@ -295,19 +299,19 @@ func (ai *aggInfo) Done(ctx *C.sqlite3_context) { | |||
// Commit transaction. | |||
func (tx *SQLiteTx) Commit() error { | |||
_, err := tx.c.exec("COMMIT") | |||
_, err := tx.c.exec(context.Background(), "COMMIT", nil) | |||
if err != nil && err.(Error).Code == C.SQLITE_BUSY { | |||
// sqlite3 will leave the transaction open in this scenario. | |||
// However, database/sql considers the transaction complete once we | |||
// return from Commit() - we must clean up to honour its semantics. | |||
tx.c.exec("ROLLBACK") | |||
tx.c.exec(context.Background(), "ROLLBACK", nil) | |||
} | |||
return err | |||
} | |||
// Rollback transaction. | |||
func (tx *SQLiteTx) Rollback() error { | |||
_, err := tx.c.exec("ROLLBACK") | |||
_, err := tx.c.exec(context.Background(), "ROLLBACK", nil) | |||
return err | |||
} | |||
@@ -381,34 +385,54 @@ func (c *SQLiteConn) RegisterFunc(name string, impl interface{}, pure bool) erro | |||
if pure { | |||
opts |= C.SQLITE_DETERMINISTIC | |||
} | |||
rv := C._sqlite3_create_function(c.db, cname, C.int(numArgs), C.int(opts), C.uintptr_t(newHandle(c, &fi)), (*[0]byte)(unsafe.Pointer(C.callbackTrampoline)), nil, nil) | |||
rv := sqlite3CreateFunction(c.db, cname, C.int(numArgs), C.int(opts), newHandle(c, &fi), C.callbackTrampoline, nil, nil) | |||
if rv != C.SQLITE_OK { | |||
return c.lastError() | |||
} | |||
return nil | |||
} | |||
func sqlite3CreateFunction(db *C.sqlite3, zFunctionName *C.char, nArg C.int, eTextRep C.int, pApp uintptr, xFunc unsafe.Pointer, xStep unsafe.Pointer, xFinal unsafe.Pointer) C.int { | |||
return C._sqlite3_create_function(db, zFunctionName, nArg, eTextRep, C.uintptr_t(pApp), (*[0]byte)(unsafe.Pointer(xFunc)), (*[0]byte)(unsafe.Pointer(xStep)), (*[0]byte)(unsafe.Pointer(xFinal))) | |||
} | |||
// AutoCommit return which currently auto commit or not. | |||
func (c *SQLiteConn) AutoCommit() bool { | |||
return int(C.sqlite3_get_autocommit(c.db)) != 0 | |||
} | |||
func (c *SQLiteConn) lastError() Error { | |||
func (c *SQLiteConn) lastError() error { | |||
return lastError(c.db) | |||
} | |||
func lastError(db *C.sqlite3) error { | |||
rv := C.sqlite3_errcode(db) | |||
if rv == C.SQLITE_OK { | |||
return nil | |||
} | |||
return Error{ | |||
Code: ErrNo(C.sqlite3_errcode(c.db)), | |||
ExtendedCode: ErrNoExtended(C.sqlite3_extended_errcode(c.db)), | |||
err: C.GoString(C.sqlite3_errmsg(c.db)), | |||
Code: ErrNo(rv), | |||
ExtendedCode: ErrNoExtended(C.sqlite3_extended_errcode(db)), | |||
err: C.GoString(C.sqlite3_errmsg(db)), | |||
} | |||
} | |||
// Implements Execer | |||
// Exec implements Execer. | |||
func (c *SQLiteConn) Exec(query string, args []driver.Value) (driver.Result, error) { | |||
if len(args) == 0 { | |||
return c.exec(query) | |||
list := make([]namedValue, len(args)) | |||
for i, v := range args { | |||
list[i] = namedValue{ | |||
Ordinal: i + 1, | |||
Value: v, | |||
} | |||
} | |||
return c.exec(context.Background(), query, list) | |||
} | |||
func (c *SQLiteConn) exec(ctx context.Context, query string, args []namedValue) (driver.Result, error) { | |||
start := 0 | |||
for { | |||
s, err := c.Prepare(query) | |||
s, err := c.prepare(ctx, query) | |||
if err != nil { | |||
return nil, err | |||
} | |||
@@ -416,14 +440,19 @@ func (c *SQLiteConn) Exec(query string, args []driver.Value) (driver.Result, err | |||
if s.(*SQLiteStmt).s != nil { | |||
na := s.NumInput() | |||
if len(args) < na { | |||
return nil, fmt.Errorf("Not enough args to execute query. Expected %d, got %d.", na, len(args)) | |||
s.Close() | |||
return nil, fmt.Errorf("not enough args to execute query: want %d got %d", na, len(args)) | |||
} | |||
res, err = s.Exec(args[:na]) | |||
for i := 0; i < na; i++ { | |||
args[i].Ordinal -= start | |||
} | |||
res, err = s.(*SQLiteStmt).exec(ctx, args[:na]) | |||
if err != nil && err != driver.ErrSkip { | |||
s.Close() | |||
return nil, err | |||
} | |||
args = args[na:] | |||
start += na | |||
} | |||
tail := s.(*SQLiteStmt).t | |||
s.Close() | |||
@@ -434,24 +463,46 @@ func (c *SQLiteConn) Exec(query string, args []driver.Value) (driver.Result, err | |||
} | |||
} | |||
// Implements Queryer | |||
type namedValue struct { | |||
Name string | |||
Ordinal int | |||
Value driver.Value | |||
} | |||
// Query implements Queryer. | |||
func (c *SQLiteConn) Query(query string, args []driver.Value) (driver.Rows, error) { | |||
list := make([]namedValue, len(args)) | |||
for i, v := range args { | |||
list[i] = namedValue{ | |||
Ordinal: i + 1, | |||
Value: v, | |||
} | |||
} | |||
return c.query(context.Background(), query, list) | |||
} | |||
func (c *SQLiteConn) query(ctx context.Context, query string, args []namedValue) (driver.Rows, error) { | |||
start := 0 | |||
for { | |||
s, err := c.Prepare(query) | |||
s, err := c.prepare(ctx, query) | |||
if err != nil { | |||
return nil, err | |||
} | |||
s.(*SQLiteStmt).cls = true | |||
na := s.NumInput() | |||
if len(args) < na { | |||
return nil, fmt.Errorf("Not enough args to execute query. Expected %d, got %d.", na, len(args)) | |||
return nil, fmt.Errorf("not enough args to execute query: want %d got %d", na, len(args)) | |||
} | |||
rows, err := s.Query(args[:na]) | |||
for i := 0; i < na; i++ { | |||
args[i].Ordinal -= start | |||
} | |||
rows, err := s.(*SQLiteStmt).query(ctx, args[:na]) | |||
if err != nil && err != driver.ErrSkip { | |||
s.Close() | |||
return nil, err | |||
return rows, err | |||
} | |||
args = args[na:] | |||
start += na | |||
tail := s.(*SQLiteStmt).t | |||
if tail == "" { | |||
return rows, nil | |||
@@ -462,21 +513,13 @@ func (c *SQLiteConn) Query(query string, args []driver.Value) (driver.Rows, erro | |||
} | |||
} | |||
func (c *SQLiteConn) exec(cmd string) (driver.Result, error) { | |||
pcmd := C.CString(cmd) | |||
defer C.free(unsafe.Pointer(pcmd)) | |||
var rowid, changes C.longlong | |||
rv := C._sqlite3_exec(c.db, pcmd, &rowid, &changes) | |||
if rv != C.SQLITE_OK { | |||
return nil, c.lastError() | |||
} | |||
return &SQLiteResult{int64(rowid), int64(changes)}, nil | |||
} | |||
// Begin transaction. | |||
func (c *SQLiteConn) Begin() (driver.Tx, error) { | |||
if _, err := c.exec(c.txlock); err != nil { | |||
return c.begin(context.Background()) | |||
} | |||
func (c *SQLiteConn) begin(ctx context.Context) (driver.Tx, error) { | |||
if _, err := c.exec(ctx, c.txlock, nil); err != nil { | |||
return nil, err | |||
} | |||
return &SQLiteTx{c}, nil | |||
@@ -500,6 +543,8 @@ func errorString(err Error) string { | |||
// _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. | |||
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") | |||
@@ -507,7 +552,8 @@ func (d *SQLiteDriver) Open(dsn string) (driver.Conn, error) { | |||
var loc *time.Location | |||
txlock := "BEGIN" | |||
busy_timeout := 5000 | |||
busyTimeout := 5000 | |||
foreignKeys := -1 | |||
pos := strings.IndexRune(dsn, '?') | |||
if pos >= 1 { | |||
params, err := url.ParseQuery(dsn[pos+1:]) | |||
@@ -533,7 +579,7 @@ func (d *SQLiteDriver) Open(dsn string) (driver.Conn, error) { | |||
if err != nil { | |||
return nil, fmt.Errorf("Invalid _busy_timeout: %v: %v", val, err) | |||
} | |||
busy_timeout = int(iv) | |||
busyTimeout = int(iv) | |||
} | |||
// _txlock | |||
@@ -550,6 +596,18 @@ 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": | |||
foreignKeys = 0 | |||
default: | |||
return nil, fmt.Errorf("Invalid _foreign_keys: %v", val) | |||
} | |||
} | |||
if !strings.HasPrefix(dsn, "file:") { | |||
dsn = dsn[:pos] | |||
} | |||
@@ -570,21 +628,45 @@ func (d *SQLiteDriver) Open(dsn string) (driver.Conn, error) { | |||
return nil, errors.New("sqlite succeeded without returning a database") | |||
} | |||
rv = C.sqlite3_busy_timeout(db, C.int(busy_timeout)) | |||
rv = C.sqlite3_busy_timeout(db, C.int(busyTimeout)) | |||
if rv != C.SQLITE_OK { | |||
C.sqlite3_close_v2(db) | |||
return nil, Error{Code: ErrNo(rv)} | |||
} | |||
exec := func(s string) error { | |||
cs := C.CString(s) | |||
rv := C.sqlite3_exec(db, cs, nil, nil, nil) | |||
C.free(unsafe.Pointer(cs)) | |||
if rv != C.SQLITE_OK { | |||
return lastError(db) | |||
} | |||
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 { | |||
C.sqlite3_close_v2(db) | |||
return nil, err | |||
} | |||
} | |||
conn := &SQLiteConn{db: db, loc: loc, txlock: txlock} | |||
if len(d.Extensions) > 0 { | |||
if err := conn.loadExtensions(d.Extensions); err != nil { | |||
conn.Close() | |||
return nil, err | |||
} | |||
} | |||
if d.ConnectHook != nil { | |||
if err := d.ConnectHook(conn); err != nil { | |||
conn.Close() | |||
return nil, err | |||
} | |||
} | |||
@@ -594,18 +676,33 @@ func (d *SQLiteDriver) Open(dsn string) (driver.Conn, error) { | |||
// Close the connection. | |||
func (c *SQLiteConn) Close() error { | |||
deleteHandles(c) | |||
rv := C.sqlite3_close_v2(c.db) | |||
if rv != C.SQLITE_OK { | |||
return c.lastError() | |||
} | |||
deleteHandles(c) | |||
c.dbMu.Lock() | |||
c.db = nil | |||
c.dbMu.Unlock() | |||
runtime.SetFinalizer(c, nil) | |||
return nil | |||
} | |||
func (c *SQLiteConn) dbConnOpen() bool { | |||
if c == nil { | |||
return false | |||
} | |||
c.dbMu.Lock() | |||
defer c.dbMu.Unlock() | |||
return c.db != nil | |||
} | |||
// Prepare the query string. Return a new statement. | |||
func (c *SQLiteConn) Prepare(query string) (driver.Stmt, error) { | |||
return c.prepare(context.Background(), query) | |||
} | |||
func (c *SQLiteConn) prepare(ctx context.Context, query string) (driver.Stmt, error) { | |||
pquery := C.CString(query) | |||
defer C.free(unsafe.Pointer(pquery)) | |||
var s *C.sqlite3_stmt | |||
@@ -618,15 +715,7 @@ func (c *SQLiteConn) Prepare(query string) (driver.Stmt, error) { | |||
if tail != nil && *tail != '\000' { | |||
t = strings.TrimSpace(C.GoString(tail)) | |||
} | |||
nv := int(C.sqlite3_bind_parameter_count(s)) | |||
var nn []string | |||
for i := 0; i < nv; i++ { | |||
pn := C.GoString(C.sqlite3_bind_parameter_name(s, C.int(i+1))) | |||
if len(pn) > 1 && pn[0] == '$' && 48 <= pn[1] && pn[1] <= 57 { | |||
nn = append(nn, C.GoString(C.sqlite3_bind_parameter_name(s, C.int(i+1)))) | |||
} | |||
} | |||
ss := &SQLiteStmt{c: c, s: s, nv: nv, nn: nn, t: t} | |||
ss := &SQLiteStmt{c: c, s: s, t: t} | |||
runtime.SetFinalizer(ss, (*SQLiteStmt).Close) | |||
return ss, nil | |||
} | |||
@@ -637,7 +726,7 @@ func (s *SQLiteStmt) Close() error { | |||
return nil | |||
} | |||
s.closed = true | |||
if s.c == nil || s.c.db == nil { | |||
if !s.c.dbConnOpen() { | |||
return errors.New("sqlite statement with already closed database connection") | |||
} | |||
rv := C.sqlite3_finalize(s.s) | |||
@@ -648,9 +737,9 @@ func (s *SQLiteStmt) Close() error { | |||
return nil | |||
} | |||
// Return a number of parameters. | |||
// NumInput return a number of parameters. | |||
func (s *SQLiteStmt) NumInput() int { | |||
return s.nv | |||
return int(C.sqlite3_bind_parameter_count(s.s)) | |||
} | |||
type bindArg struct { | |||
@@ -658,37 +747,30 @@ type bindArg struct { | |||
v driver.Value | |||
} | |||
func (s *SQLiteStmt) bind(args []driver.Value) error { | |||
var placeHolder = []byte{0} | |||
func (s *SQLiteStmt) bind(args []namedValue) error { | |||
rv := C.sqlite3_reset(s.s) | |||
if rv != C.SQLITE_ROW && rv != C.SQLITE_OK && rv != C.SQLITE_DONE { | |||
return s.c.lastError() | |||
} | |||
var vargs []bindArg | |||
narg := len(args) | |||
vargs = make([]bindArg, narg) | |||
if len(s.nn) > 0 { | |||
for i, v := range s.nn { | |||
if pi, err := strconv.Atoi(v[1:]); err == nil { | |||
vargs[i] = bindArg{pi, args[i]} | |||
} | |||
} | |||
} else { | |||
for i, v := range args { | |||
vargs[i] = bindArg{i + 1, v} | |||
for i, v := range args { | |||
if v.Name != "" { | |||
cname := C.CString(":" + v.Name) | |||
args[i].Ordinal = int(C.sqlite3_bind_parameter_index(s.s, cname)) | |||
C.free(unsafe.Pointer(cname)) | |||
} | |||
} | |||
for _, varg := range vargs { | |||
n := C.int(varg.n) | |||
v := varg.v | |||
switch v := v.(type) { | |||
for _, arg := range args { | |||
n := C.int(arg.Ordinal) | |||
switch v := arg.Value.(type) { | |||
case nil: | |||
rv = C.sqlite3_bind_null(s.s, n) | |||
case string: | |||
if len(v) == 0 { | |||
b := []byte{0} | |||
rv = C._sqlite3_bind_text(s.s, n, (*C.char)(unsafe.Pointer(&b[0])), C.int(0)) | |||
rv = C._sqlite3_bind_text(s.s, n, (*C.char)(unsafe.Pointer(&placeHolder[0])), C.int(0)) | |||
} else { | |||
b := []byte(v) | |||
rv = C._sqlite3_bind_text(s.s, n, (*C.char)(unsafe.Pointer(&b[0])), C.int(len(b))) | |||
@@ -705,10 +787,9 @@ func (s *SQLiteStmt) bind(args []driver.Value) error { | |||
rv = C.sqlite3_bind_double(s.s, n, C.double(v)) | |||
case []byte: | |||
if len(v) == 0 { | |||
rv = C._sqlite3_bind_blob(s.s, n, nil, 0) | |||
} else { | |||
rv = C._sqlite3_bind_blob(s.s, n, unsafe.Pointer(&v[0]), C.int(len(v))) | |||
v = placeHolder | |||
} | |||
rv = C._sqlite3_bind_blob(s.s, n, unsafe.Pointer(&v[0]), C.int(len(v))) | |||
case time.Time: | |||
b := []byte(v.Format(SQLiteTimestampFormats[0])) | |||
rv = C._sqlite3_bind_text(s.s, n, (*C.char)(unsafe.Pointer(&b[0])), C.int(len(b))) | |||
@@ -722,29 +803,85 @@ func (s *SQLiteStmt) bind(args []driver.Value) error { | |||
// Query the statement with arguments. Return records. | |||
func (s *SQLiteStmt) Query(args []driver.Value) (driver.Rows, error) { | |||
list := make([]namedValue, len(args)) | |||
for i, v := range args { | |||
list[i] = namedValue{ | |||
Ordinal: i + 1, | |||
Value: v, | |||
} | |||
} | |||
return s.query(context.Background(), list) | |||
} | |||
func (s *SQLiteStmt) query(ctx context.Context, args []namedValue) (driver.Rows, error) { | |||
if err := s.bind(args); err != nil { | |||
return nil, err | |||
} | |||
return &SQLiteRows{s, int(C.sqlite3_column_count(s.s)), nil, nil, s.cls}, nil | |||
rows := &SQLiteRows{ | |||
s: s, | |||
nc: int(C.sqlite3_column_count(s.s)), | |||
cols: nil, | |||
decltype: nil, | |||
cls: s.cls, | |||
done: make(chan struct{}), | |||
} | |||
go func(db *C.sqlite3) { | |||
select { | |||
case <-ctx.Done(): | |||
select { | |||
case <-rows.done: | |||
default: | |||
C.sqlite3_interrupt(db) | |||
rows.Close() | |||
} | |||
case <-rows.done: | |||
} | |||
}(s.c.db) | |||
return rows, nil | |||
} | |||
// Return last inserted ID. | |||
// LastInsertId teturn last inserted ID. | |||
func (r *SQLiteResult) LastInsertId() (int64, error) { | |||
return r.id, nil | |||
} | |||
// Return how many rows affected. | |||
// RowsAffected return how many rows affected. | |||
func (r *SQLiteResult) RowsAffected() (int64, error) { | |||
return r.changes, nil | |||
} | |||
// Execute the statement with arguments. Return result object. | |||
// Exec execute the statement with arguments. Return result object. | |||
func (s *SQLiteStmt) Exec(args []driver.Value) (driver.Result, error) { | |||
list := make([]namedValue, len(args)) | |||
for i, v := range args { | |||
list[i] = namedValue{ | |||
Ordinal: i + 1, | |||
Value: v, | |||
} | |||
} | |||
return s.exec(context.Background(), list) | |||
} | |||
func (s *SQLiteStmt) exec(ctx context.Context, args []namedValue) (driver.Result, error) { | |||
if err := s.bind(args); err != nil { | |||
C.sqlite3_reset(s.s) | |||
C.sqlite3_clear_bindings(s.s) | |||
return nil, err | |||
} | |||
done := make(chan struct{}) | |||
defer close(done) | |||
go func(db *C.sqlite3) { | |||
select { | |||
case <-ctx.Done(): | |||
C.sqlite3_interrupt(db) | |||
case <-done: | |||
} | |||
}(s.c.db) | |||
var rowid, changes C.longlong | |||
rv := C._sqlite3_step(s.s, &rowid, &changes) | |||
if rv != C.SQLITE_ROW && rv != C.SQLITE_OK && rv != C.SQLITE_DONE { | |||
@@ -753,7 +890,8 @@ func (s *SQLiteStmt) Exec(args []driver.Value) (driver.Result, error) { | |||
C.sqlite3_clear_bindings(s.s) | |||
return nil, err | |||
} | |||
return &SQLiteResult{int64(rowid), int64(changes)}, nil | |||
return &SQLiteResult{id: int64(rowid), changes: int64(changes)}, nil | |||
} | |||
// Close the rows. | |||
@@ -761,6 +899,9 @@ func (rc *SQLiteRows) Close() error { | |||
if rc.s.closed { | |||
return nil | |||
} | |||
if rc.done != nil { | |||
close(rc.done) | |||
} | |||
if rc.cls { | |||
return rc.s.Close() | |||
} | |||
@@ -771,7 +912,7 @@ func (rc *SQLiteRows) Close() error { | |||
return nil | |||
} | |||
// Return column names. | |||
// Columns return column names. | |||
func (rc *SQLiteRows) Columns() []string { | |||
if rc.nc != len(rc.cols) { | |||
rc.cols = make([]string, rc.nc) | |||
@@ -782,7 +923,7 @@ func (rc *SQLiteRows) Columns() []string { | |||
return rc.cols | |||
} | |||
// Return column types. | |||
// DeclTypes return column types. | |||
func (rc *SQLiteRows) DeclTypes() []string { | |||
if rc.decltype == nil { | |||
rc.decltype = make([]string, rc.nc) | |||
@@ -793,7 +934,7 @@ func (rc *SQLiteRows) DeclTypes() []string { | |||
return rc.decltype | |||
} | |||
// Move cursor to next. | |||
// Next move cursor to next. | |||
func (rc *SQLiteRows) Next(dest []driver.Value) error { | |||
rv := C.sqlite3_step(rc.s.s) | |||
if rv == C.SQLITE_DONE { | |||
@@ -820,10 +961,11 @@ func (rc *SQLiteRows) Next(dest []driver.Value) error { | |||
// large to be a reasonable timestamp in seconds. | |||
if val > 1e12 || val < -1e12 { | |||
val *= int64(time.Millisecond) // convert ms to nsec | |||
t = time.Unix(0, val) | |||
} else { | |||
val *= int64(time.Second) // convert sec to nsec | |||
t = time.Unix(val, 0) | |||
} | |||
t = time.Unix(0, val).UTC() | |||
t = t.UTC() | |||
if rc.s.c.loc != nil { | |||
t = t.In(rc.s.c.loc) | |||
} | |||
@@ -0,0 +1,103 @@ | |||
// 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> | |||
// These wrappers are necessary because SQLITE_TRANSIENT | |||
// is a pointer constant, and cgo doesn't translate them correctly. | |||
static inline void my_result_text(sqlite3_context *ctx, char *p, int np) { | |||
sqlite3_result_text(ctx, p, np, SQLITE_TRANSIENT); | |||
} | |||
static inline void my_result_blob(sqlite3_context *ctx, void *p, int np) { | |||
sqlite3_result_blob(ctx, p, np, SQLITE_TRANSIENT); | |||
} | |||
*/ | |||
import "C" | |||
import ( | |||
"math" | |||
"reflect" | |||
"unsafe" | |||
) | |||
const i64 = unsafe.Sizeof(int(0)) > 4 | |||
// SQLiteContext behave sqlite3_context | |||
type SQLiteContext C.sqlite3_context | |||
// ResultBool sets the result of an SQL function. | |||
func (c *SQLiteContext) ResultBool(b bool) { | |||
if b { | |||
c.ResultInt(1) | |||
} else { | |||
c.ResultInt(0) | |||
} | |||
} | |||
// ResultBlob sets the result of an SQL function. | |||
// See: sqlite3_result_blob, http://sqlite.org/c3ref/result_blob.html | |||
func (c *SQLiteContext) ResultBlob(b []byte) { | |||
if i64 && len(b) > math.MaxInt32 { | |||
C.sqlite3_result_error_toobig((*C.sqlite3_context)(c)) | |||
return | |||
} | |||
var p *byte | |||
if len(b) > 0 { | |||
p = &b[0] | |||
} | |||
C.my_result_blob((*C.sqlite3_context)(c), unsafe.Pointer(p), C.int(len(b))) | |||
} | |||
// ResultDouble sets the result of an SQL function. | |||
// See: sqlite3_result_double, http://sqlite.org/c3ref/result_blob.html | |||
func (c *SQLiteContext) ResultDouble(d float64) { | |||
C.sqlite3_result_double((*C.sqlite3_context)(c), C.double(d)) | |||
} | |||
// ResultInt sets the result of an SQL function. | |||
// See: sqlite3_result_int, http://sqlite.org/c3ref/result_blob.html | |||
func (c *SQLiteContext) ResultInt(i int) { | |||
if i64 && (i > math.MaxInt32 || i < math.MinInt32) { | |||
C.sqlite3_result_int64((*C.sqlite3_context)(c), C.sqlite3_int64(i)) | |||
} else { | |||
C.sqlite3_result_int((*C.sqlite3_context)(c), C.int(i)) | |||
} | |||
} | |||
// ResultInt64 sets the result of an SQL function. | |||
// See: sqlite3_result_int64, http://sqlite.org/c3ref/result_blob.html | |||
func (c *SQLiteContext) ResultInt64(i int64) { | |||
C.sqlite3_result_int64((*C.sqlite3_context)(c), C.sqlite3_int64(i)) | |||
} | |||
// ResultNull sets the result of an SQL function. | |||
// See: sqlite3_result_null, http://sqlite.org/c3ref/result_blob.html | |||
func (c *SQLiteContext) ResultNull() { | |||
C.sqlite3_result_null((*C.sqlite3_context)(c)) | |||
} | |||
// ResultText sets the result of an SQL function. | |||
// See: sqlite3_result_text, http://sqlite.org/c3ref/result_blob.html | |||
func (c *SQLiteContext) ResultText(s string) { | |||
h := (*reflect.StringHeader)(unsafe.Pointer(&s)) | |||
cs, l := (*C.char)(unsafe.Pointer(h.Data)), C.int(h.Len) | |||
C.my_result_text((*C.sqlite3_context)(c), cs, l) | |||
} | |||
// ResultZeroblob sets the result of an SQL function. | |||
// See: sqlite3_result_zeroblob, http://sqlite.org/c3ref/result_blob.html | |||
func (c *SQLiteContext) ResultZeroblob(n int) { | |||
C.sqlite3_result_zeroblob((*C.sqlite3_context)(c), C.int(n)) | |||
} |
@@ -0,0 +1,69 @@ | |||
// 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. | |||
// +build go1.8 | |||
package sqlite3 | |||
import ( | |||
"database/sql/driver" | |||
"errors" | |||
"context" | |||
) | |||
// Ping implement Pinger. | |||
func (c *SQLiteConn) Ping(ctx context.Context) error { | |||
if c.db == nil { | |||
return errors.New("Connection was closed") | |||
} | |||
return nil | |||
} | |||
// QueryContext implement QueryerContext. | |||
func (c *SQLiteConn) QueryContext(ctx context.Context, query string, args []driver.NamedValue) (driver.Rows, error) { | |||
list := make([]namedValue, len(args)) | |||
for i, nv := range args { | |||
list[i] = namedValue(nv) | |||
} | |||
return c.query(ctx, query, list) | |||
} | |||
// ExecContext implement ExecerContext. | |||
func (c *SQLiteConn) ExecContext(ctx context.Context, query string, args []driver.NamedValue) (driver.Result, error) { | |||
list := make([]namedValue, len(args)) | |||
for i, nv := range args { | |||
list[i] = namedValue(nv) | |||
} | |||
return c.exec(ctx, query, list) | |||
} | |||
// PrepareContext implement ConnPrepareContext. | |||
func (c *SQLiteConn) PrepareContext(ctx context.Context, query string) (driver.Stmt, error) { | |||
return c.prepare(ctx, query) | |||
} | |||
// BeginTx implement ConnBeginTx. | |||
func (c *SQLiteConn) BeginTx(ctx context.Context, opts driver.TxOptions) (driver.Tx, error) { | |||
return c.begin(ctx) | |||
} | |||
// QueryContext implement QueryerContext. | |||
func (s *SQLiteStmt) QueryContext(ctx context.Context, args []driver.NamedValue) (driver.Rows, error) { | |||
list := make([]namedValue, len(args)) | |||
for i, nv := range args { | |||
list[i] = namedValue(nv) | |||
} | |||
return s.query(ctx, list) | |||
} | |||
// ExecContext implement ExecerContext. | |||
func (s *SQLiteStmt) ExecContext(ctx context.Context, args []driver.NamedValue) (driver.Result, error) { | |||
list := make([]namedValue, len(args)) | |||
for i, nv := range args { | |||
list[i] = namedValue(nv) | |||
} | |||
return s.exec(ctx, list) | |||
} |
@@ -2,7 +2,7 @@ | |||
// | |||
// Use of this source code is governed by an MIT-style | |||
// license that can be found in the LICENSE file. | |||
// +build icu | |||
// +build icu | |||
package sqlite3 | |||
@@ -31,6 +31,7 @@ func (c *SQLiteConn) loadExtensions(extensions []string) error { | |||
defer C.free(unsafe.Pointer(cext)) | |||
rv = C.sqlite3_load_extension(c.db, cext, nil, nil) | |||
if rv != C.SQLITE_OK { | |||
C.sqlite3_enable_load_extension(c.db, 0) | |||
return errors.New(C.GoString(C.sqlite3_errmsg(c.db))) | |||
} | |||
} | |||
@@ -42,6 +43,7 @@ func (c *SQLiteConn) loadExtensions(extensions []string) error { | |||
return nil | |||
} | |||
// LoadExtension load the sqlite3 extension. | |||
func (c *SQLiteConn) LoadExtension(lib string, entry string) error { | |||
rv := C.sqlite3_enable_load_extension(c.db, 1) | |||
if rv != C.SQLITE_OK { | |||
@@ -1,5 +1,4 @@ | |||
// Copyright (C) 2016 Yasuhiro Matsumoto <mattn.jp@gmail.com>. | |||
// TODO: add "Gimpl do foo" team? | |||
// | |||
// Use of this source code is governed by an MIT-style | |||
// license that can be found in the LICENSE file. | |||
@@ -17,7 +16,7 @@ package sqlite3 | |||
void stepTrampoline(sqlite3_context*, int, sqlite3_value**); | |||
void doneTrampoline(sqlite3_context*); | |||
void traceCallbackTrampoline(unsigned traceEventCode, void *ctx, void *p, void *x); | |||
int traceCallbackTrampoline(unsigned int traceEventCode, void *ctx, void *p, void *x); | |||
*/ | |||
import "C" | |||
@@ -76,7 +75,7 @@ type TraceUserCallback func(TraceInfo) int | |||
type TraceConfig struct { | |||
Callback TraceUserCallback | |||
EventMask uint | |||
EventMask C.uint | |||
WantExpandedSQL bool | |||
} | |||
@@ -102,13 +101,13 @@ func fillExpandedSQL(info *TraceInfo, db *C.sqlite3, pStmt unsafe.Pointer) { | |||
//export traceCallbackTrampoline | |||
func traceCallbackTrampoline( | |||
traceEventCode uint, | |||
traceEventCode C.uint, | |||
// Parameter named 'C' in SQLite docs = Context given at registration: | |||
ctx unsafe.Pointer, | |||
// Parameter named 'P' in SQLite docs (Primary event data?): | |||
p unsafe.Pointer, | |||
// Parameter named 'X' in SQLite docs (eXtra event data?): | |||
xValue unsafe.Pointer) int { | |||
xValue unsafe.Pointer) C.int { | |||
if ctx == nil { | |||
panic(fmt.Sprintf("No context (ev 0x%x)", traceEventCode)) | |||
@@ -196,7 +195,7 @@ func traceCallbackTrampoline( | |||
if traceConf.Callback != nil { | |||
r = traceConf.Callback(info) | |||
} | |||
return r | |||
return C.int(r) | |||
} | |||
type traceMapEntry struct { | |||
@@ -358,7 +357,7 @@ func (c *SQLiteConn) RegisterAggregator(name string, impl interface{}, pure bool | |||
if pure { | |||
opts |= C.SQLITE_DETERMINISTIC | |||
} | |||
rv := C._sqlite3_create_function(c.db, cname, C.int(stepNArgs), C.int(opts), C.uintptr_t(newHandle(c, &ai)), nil, (*[0]byte)(unsafe.Pointer(C.stepTrampoline)), (*[0]byte)(unsafe.Pointer(C.doneTrampoline))) | |||
rv := sqlite3CreateFunction(c.db, cname, C.int(stepNArgs), C.int(opts), newHandle(c, &ai), nil, C.stepTrampoline, C.doneTrampoline) | |||
if rv != C.SQLITE_OK { | |||
return c.lastError() | |||
} | |||
@@ -396,7 +395,7 @@ func (c *SQLiteConn) SetTrace(requested *TraceConfig) error { | |||
// The callback trampoline function does cleanup on Close event, | |||
// regardless of the presence or absence of the user callback. | |||
// Therefore it needs the Close event to be selected: | |||
actualEventMask := reqCopy.EventMask | TraceClose | |||
actualEventMask := uint(reqCopy.EventMask | TraceClose) | |||
err := c.setSQLiteTrace(actualEventMask) | |||
return err | |||
} |
@@ -0,0 +1,57 @@ | |||
package sqlite3 | |||
/* | |||
#ifndef USE_LIBSQLITE3 | |||
#include <sqlite3-binding.h> | |||
#else | |||
#include <sqlite3.h> | |||
#endif | |||
*/ | |||
import "C" | |||
import ( | |||
"reflect" | |||
"time" | |||
) | |||
// ColumnTypeDatabaseTypeName implement RowsColumnTypeDatabaseTypeName. | |||
func (rc *SQLiteRows) ColumnTypeDatabaseTypeName(i int) string { | |||
return C.GoString(C.sqlite3_column_decltype(rc.s.s, C.int(i))) | |||
} | |||
/* | |||
func (rc *SQLiteRows) ColumnTypeLength(index int) (length int64, ok bool) { | |||
return 0, false | |||
} | |||
func (rc *SQLiteRows) ColumnTypePrecisionScale(index int) (precision, scale int64, ok bool) { | |||
return 0, 0, false | |||
} | |||
*/ | |||
// ColumnTypeNullable implement RowsColumnTypeNullable. | |||
func (rc *SQLiteRows) ColumnTypeNullable(i int) (nullable, ok bool) { | |||
return true, true | |||
} | |||
// ColumnTypeScanType implement RowsColumnTypeScanType. | |||
func (rc *SQLiteRows) ColumnTypeScanType(i int) reflect.Type { | |||
switch C.sqlite3_column_type(rc.s.s, C.int(i)) { | |||
case C.SQLITE_INTEGER: | |||
switch C.GoString(C.sqlite3_column_decltype(rc.s.s, C.int(i))) { | |||
case "timestamp", "datetime", "date": | |||
return reflect.TypeOf(time.Time{}) | |||
case "boolean": | |||
return reflect.TypeOf(false) | |||
} | |||
return reflect.TypeOf(int64(0)) | |||
case C.SQLITE_FLOAT: | |||
return reflect.TypeOf(float64(0)) | |||
case C.SQLITE_BLOB: | |||
return reflect.SliceOf(reflect.TypeOf(byte(0))) | |||
case C.SQLITE_NULL: | |||
return reflect.TypeOf(nil) | |||
case C.SQLITE_TEXT: | |||
return reflect.TypeOf("") | |||
} | |||
return reflect.SliceOf(reflect.TypeOf(byte(0))) | |||
} |
@@ -0,0 +1,646 @@ | |||
// 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. | |||
// +build vtable | |||
package sqlite3 | |||
/* | |||
#cgo CFLAGS: -std=gnu99 | |||
#cgo CFLAGS: -DSQLITE_ENABLE_RTREE -DSQLITE_THREADSAFE | |||
#cgo CFLAGS: -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_FTS3_PARENTHESIS -DSQLITE_ENABLE_FTS4_UNICODE61 | |||
#cgo CFLAGS: -DSQLITE_TRACE_SIZE_LIMIT=15 | |||
#cgo CFLAGS: -DSQLITE_ENABLE_COLUMN_METADATA=1 | |||
#cgo CFLAGS: -Wno-deprecated-declarations | |||
#ifndef USE_LIBSQLITE3 | |||
#include <sqlite3-binding.h> | |||
#else | |||
#include <sqlite3.h> | |||
#endif | |||
#include <stdlib.h> | |||
#include <stdint.h> | |||
#include <memory.h> | |||
static inline char *_sqlite3_mprintf(char *zFormat, char *arg) { | |||
return sqlite3_mprintf(zFormat, arg); | |||
} | |||
typedef struct goVTab goVTab; | |||
struct goVTab { | |||
sqlite3_vtab base; | |||
void *vTab; | |||
}; | |||
uintptr_t goMInit(void *db, void *pAux, int argc, char **argv, char **pzErr, int isCreate); | |||
static int cXInit(sqlite3 *db, void *pAux, int argc, const char *const*argv, sqlite3_vtab **ppVTab, char **pzErr, int isCreate) { | |||
void *vTab = (void *)goMInit(db, pAux, argc, (char**)argv, pzErr, isCreate); | |||
if (!vTab || *pzErr) { | |||
return SQLITE_ERROR; | |||
} | |||
goVTab *pvTab = (goVTab *)sqlite3_malloc(sizeof(goVTab)); | |||
if (!pvTab) { | |||
*pzErr = sqlite3_mprintf("%s", "Out of memory"); | |||
return SQLITE_NOMEM; | |||
} | |||
memset(pvTab, 0, sizeof(goVTab)); | |||
pvTab->vTab = vTab; | |||
*ppVTab = (sqlite3_vtab *)pvTab; | |||
*pzErr = 0; | |||
return SQLITE_OK; | |||
} | |||
static inline int cXCreate(sqlite3 *db, void *pAux, int argc, const char *const*argv, sqlite3_vtab **ppVTab, char **pzErr) { | |||
return cXInit(db, pAux, argc, argv, ppVTab, pzErr, 1); | |||
} | |||
static inline int cXConnect(sqlite3 *db, void *pAux, int argc, const char *const*argv, sqlite3_vtab **ppVTab, char **pzErr) { | |||
return cXInit(db, pAux, argc, argv, ppVTab, pzErr, 0); | |||
} | |||
char* goVBestIndex(void *pVTab, void *icp); | |||
static inline int cXBestIndex(sqlite3_vtab *pVTab, sqlite3_index_info *info) { | |||
char *pzErr = goVBestIndex(((goVTab*)pVTab)->vTab, info); | |||
if (pzErr) { | |||
if (pVTab->zErrMsg) | |||
sqlite3_free(pVTab->zErrMsg); | |||
pVTab->zErrMsg = pzErr; | |||
return SQLITE_ERROR; | |||
} | |||
return SQLITE_OK; | |||
} | |||
char* goVRelease(void *pVTab, int isDestroy); | |||
static int cXRelease(sqlite3_vtab *pVTab, int isDestroy) { | |||
char *pzErr = goVRelease(((goVTab*)pVTab)->vTab, isDestroy); | |||
if (pzErr) { | |||
if (pVTab->zErrMsg) | |||
sqlite3_free(pVTab->zErrMsg); | |||
pVTab->zErrMsg = pzErr; | |||
return SQLITE_ERROR; | |||
} | |||
if (pVTab->zErrMsg) | |||
sqlite3_free(pVTab->zErrMsg); | |||
sqlite3_free(pVTab); | |||
return SQLITE_OK; | |||
} | |||
static inline int cXDisconnect(sqlite3_vtab *pVTab) { | |||
return cXRelease(pVTab, 0); | |||
} | |||
static inline int cXDestroy(sqlite3_vtab *pVTab) { | |||
return cXRelease(pVTab, 1); | |||
} | |||
typedef struct goVTabCursor goVTabCursor; | |||
struct goVTabCursor { | |||
sqlite3_vtab_cursor base; | |||
void *vTabCursor; | |||
}; | |||
uintptr_t goVOpen(void *pVTab, char **pzErr); | |||
static int cXOpen(sqlite3_vtab *pVTab, sqlite3_vtab_cursor **ppCursor) { | |||
void *vTabCursor = (void *)goVOpen(((goVTab*)pVTab)->vTab, &(pVTab->zErrMsg)); | |||
goVTabCursor *pCursor = (goVTabCursor *)sqlite3_malloc(sizeof(goVTabCursor)); | |||
if (!pCursor) { | |||
return SQLITE_NOMEM; | |||
} | |||
memset(pCursor, 0, sizeof(goVTabCursor)); | |||
pCursor->vTabCursor = vTabCursor; | |||
*ppCursor = (sqlite3_vtab_cursor *)pCursor; | |||
return SQLITE_OK; | |||
} | |||
static int setErrMsg(sqlite3_vtab_cursor *pCursor, char *pzErr) { | |||
if (pCursor->pVtab->zErrMsg) | |||
sqlite3_free(pCursor->pVtab->zErrMsg); | |||
pCursor->pVtab->zErrMsg = pzErr; | |||
return SQLITE_ERROR; | |||
} | |||
char* goVClose(void *pCursor); | |||
static int cXClose(sqlite3_vtab_cursor *pCursor) { | |||
char *pzErr = goVClose(((goVTabCursor*)pCursor)->vTabCursor); | |||
if (pzErr) { | |||
return setErrMsg(pCursor, pzErr); | |||
} | |||
sqlite3_free(pCursor); | |||
return SQLITE_OK; | |||
} | |||
char* goVFilter(void *pCursor, int idxNum, char* idxName, int argc, sqlite3_value **argv); | |||
static int cXFilter(sqlite3_vtab_cursor *pCursor, int idxNum, const char *idxStr, int argc, sqlite3_value **argv) { | |||
char *pzErr = goVFilter(((goVTabCursor*)pCursor)->vTabCursor, idxNum, (char*)idxStr, argc, argv); | |||
if (pzErr) { | |||
return setErrMsg(pCursor, pzErr); | |||
} | |||
return SQLITE_OK; | |||
} | |||
char* goVNext(void *pCursor); | |||
static int cXNext(sqlite3_vtab_cursor *pCursor) { | |||
char *pzErr = goVNext(((goVTabCursor*)pCursor)->vTabCursor); | |||
if (pzErr) { | |||
return setErrMsg(pCursor, pzErr); | |||
} | |||
return SQLITE_OK; | |||
} | |||
int goVEof(void *pCursor); | |||
static inline int cXEof(sqlite3_vtab_cursor *pCursor) { | |||
return goVEof(((goVTabCursor*)pCursor)->vTabCursor); | |||
} | |||
char* goVColumn(void *pCursor, void *cp, int col); | |||
static int cXColumn(sqlite3_vtab_cursor *pCursor, sqlite3_context *ctx, int i) { | |||
char *pzErr = goVColumn(((goVTabCursor*)pCursor)->vTabCursor, ctx, i); | |||
if (pzErr) { | |||
return setErrMsg(pCursor, pzErr); | |||
} | |||
return SQLITE_OK; | |||
} | |||
char* goVRowid(void *pCursor, sqlite3_int64 *pRowid); | |||
static int cXRowid(sqlite3_vtab_cursor *pCursor, sqlite3_int64 *pRowid) { | |||
char *pzErr = goVRowid(((goVTabCursor*)pCursor)->vTabCursor, pRowid); | |||
if (pzErr) { | |||
return setErrMsg(pCursor, pzErr); | |||
} | |||
return SQLITE_OK; | |||
} | |||
char* goVUpdate(void *pVTab, int argc, sqlite3_value **argv, sqlite3_int64 *pRowid); | |||
static int cXUpdate(sqlite3_vtab *pVTab, int argc, sqlite3_value **argv, sqlite3_int64 *pRowid) { | |||
char *pzErr = goVUpdate(((goVTab*)pVTab)->vTab, argc, argv, pRowid); | |||
if (pzErr) { | |||
if (pVTab->zErrMsg) | |||
sqlite3_free(pVTab->zErrMsg); | |||
pVTab->zErrMsg = pzErr; | |||
return SQLITE_ERROR; | |||
} | |||
return SQLITE_OK; | |||
} | |||
static sqlite3_module goModule = { | |||
0, // iVersion | |||
cXCreate, // xCreate - create a table | |||
cXConnect, // xConnect - connect to an existing table | |||
cXBestIndex, // xBestIndex - Determine search strategy | |||
cXDisconnect, // xDisconnect - Disconnect from a table | |||
cXDestroy, // xDestroy - Drop a table | |||
cXOpen, // xOpen - open a cursor | |||
cXClose, // xClose - close a cursor | |||
cXFilter, // xFilter - configure scan constraints | |||
cXNext, // xNext - advance a cursor | |||
cXEof, // xEof | |||
cXColumn, // xColumn - read data | |||
cXRowid, // xRowid - read data | |||
cXUpdate, // xUpdate - write data | |||
// Not implemented | |||
0, // xBegin - begin transaction | |||
0, // xSync - sync transaction | |||
0, // xCommit - commit transaction | |||
0, // xRollback - rollback transaction | |||
0, // xFindFunction - function overloading | |||
0, // xRename - rename the table | |||
0, // xSavepoint | |||
0, // xRelease | |||
0 // xRollbackTo | |||
}; | |||
void goMDestroy(void*); | |||
static int _sqlite3_create_module(sqlite3 *db, const char *zName, uintptr_t pClientData) { | |||
return sqlite3_create_module_v2(db, zName, &goModule, (void*) pClientData, goMDestroy); | |||
} | |||
*/ | |||
import "C" | |||
import ( | |||
"fmt" | |||
"math" | |||
"reflect" | |||
"unsafe" | |||
) | |||
type sqliteModule struct { | |||
c *SQLiteConn | |||
name string | |||
module Module | |||
} | |||
type sqliteVTab struct { | |||
module *sqliteModule | |||
vTab VTab | |||
} | |||
type sqliteVTabCursor struct { | |||
vTab *sqliteVTab | |||
vTabCursor VTabCursor | |||
} | |||
// Op is type of operations. | |||
type Op uint8 | |||
// Op mean identity of operations. | |||
const ( | |||
OpEQ Op = 2 | |||
OpGT = 4 | |||
OpLE = 8 | |||
OpLT = 16 | |||
OpGE = 32 | |||
OpMATCH = 64 | |||
OpLIKE = 65 /* 3.10.0 and later only */ | |||
OpGLOB = 66 /* 3.10.0 and later only */ | |||
OpREGEXP = 67 /* 3.10.0 and later only */ | |||
OpScanUnique = 1 /* Scan visits at most 1 row */ | |||
) | |||
// InfoConstraint give information of constraint. | |||
type InfoConstraint struct { | |||
Column int | |||
Op Op | |||
Usable bool | |||
} | |||
// InfoOrderBy give information of order-by. | |||
type InfoOrderBy struct { | |||
Column int | |||
Desc bool | |||
} | |||
func constraints(info *C.sqlite3_index_info) []InfoConstraint { | |||
l := info.nConstraint | |||
slice := (*[1 << 30]C.struct_sqlite3_index_constraint)(unsafe.Pointer(info.aConstraint))[:l:l] | |||
cst := make([]InfoConstraint, 0, l) | |||
for _, c := range slice { | |||
var usable bool | |||
if c.usable > 0 { | |||
usable = true | |||
} | |||
cst = append(cst, InfoConstraint{ | |||
Column: int(c.iColumn), | |||
Op: Op(c.op), | |||
Usable: usable, | |||
}) | |||
} | |||
return cst | |||
} | |||
func orderBys(info *C.sqlite3_index_info) []InfoOrderBy { | |||
l := info.nOrderBy | |||
slice := (*[1 << 30]C.struct_sqlite3_index_orderby)(unsafe.Pointer(info.aOrderBy))[:l:l] | |||
ob := make([]InfoOrderBy, 0, l) | |||
for _, c := range slice { | |||
var desc bool | |||
if c.desc > 0 { | |||
desc = true | |||
} | |||
ob = append(ob, InfoOrderBy{ | |||
Column: int(c.iColumn), | |||
Desc: desc, | |||
}) | |||
} | |||
return ob | |||
} | |||
// IndexResult is a Go struct representation of what eventually ends up in the | |||
// output fields for `sqlite3_index_info` | |||
// See: https://www.sqlite.org/c3ref/index_info.html | |||
type IndexResult struct { | |||
Used []bool // aConstraintUsage | |||
IdxNum int | |||
IdxStr string | |||
AlreadyOrdered bool // orderByConsumed | |||
EstimatedCost float64 | |||
EstimatedRows float64 | |||
} | |||
// mPrintf is a utility wrapper around sqlite3_mprintf | |||
func mPrintf(format, arg string) *C.char { | |||
cf := C.CString(format) | |||
defer C.free(unsafe.Pointer(cf)) | |||
ca := C.CString(arg) | |||
defer C.free(unsafe.Pointer(ca)) | |||
return C._sqlite3_mprintf(cf, ca) | |||
} | |||
//export goMInit | |||
func goMInit(db, pClientData unsafe.Pointer, argc C.int, argv **C.char, pzErr **C.char, isCreate C.int) C.uintptr_t { | |||
m := lookupHandle(uintptr(pClientData)).(*sqliteModule) | |||
if m.c.db != (*C.sqlite3)(db) { | |||
*pzErr = mPrintf("%s", "Inconsistent db handles") | |||
return 0 | |||
} | |||
args := make([]string, argc) | |||
var A []*C.char | |||
slice := reflect.SliceHeader{Data: uintptr(unsafe.Pointer(argv)), Len: int(argc), Cap: int(argc)} | |||
a := reflect.NewAt(reflect.TypeOf(A), unsafe.Pointer(&slice)).Elem().Interface() | |||
for i, s := range a.([]*C.char) { | |||
args[i] = C.GoString(s) | |||
} | |||
var vTab VTab | |||
var err error | |||
if isCreate == 1 { | |||
vTab, err = m.module.Create(m.c, args) | |||
} else { | |||
vTab, err = m.module.Connect(m.c, args) | |||
} | |||
if err != nil { | |||
*pzErr = mPrintf("%s", err.Error()) | |||
return 0 | |||
} | |||
vt := sqliteVTab{m, vTab} | |||
*pzErr = nil | |||
return C.uintptr_t(newHandle(m.c, &vt)) | |||
} | |||
//export goVRelease | |||
func goVRelease(pVTab unsafe.Pointer, isDestroy C.int) *C.char { | |||
vt := lookupHandle(uintptr(pVTab)).(*sqliteVTab) | |||
var err error | |||
if isDestroy == 1 { | |||
err = vt.vTab.Destroy() | |||
} else { | |||
err = vt.vTab.Disconnect() | |||
} | |||
if err != nil { | |||
return mPrintf("%s", err.Error()) | |||
} | |||
return nil | |||
} | |||
//export goVOpen | |||
func goVOpen(pVTab unsafe.Pointer, pzErr **C.char) C.uintptr_t { | |||
vt := lookupHandle(uintptr(pVTab)).(*sqliteVTab) | |||
vTabCursor, err := vt.vTab.Open() | |||
if err != nil { | |||
*pzErr = mPrintf("%s", err.Error()) | |||
return 0 | |||
} | |||
vtc := sqliteVTabCursor{vt, vTabCursor} | |||
*pzErr = nil | |||
return C.uintptr_t(newHandle(vt.module.c, &vtc)) | |||
} | |||
//export goVBestIndex | |||
func goVBestIndex(pVTab unsafe.Pointer, icp unsafe.Pointer) *C.char { | |||
vt := lookupHandle(uintptr(pVTab)).(*sqliteVTab) | |||
info := (*C.sqlite3_index_info)(icp) | |||
csts := constraints(info) | |||
res, err := vt.vTab.BestIndex(csts, orderBys(info)) | |||
if err != nil { | |||
return mPrintf("%s", err.Error()) | |||
} | |||
if len(res.Used) != len(csts) { | |||
return mPrintf("Result.Used != expected value", "") | |||
} | |||
// Get a pointer to constraint_usage struct so we can update in place. | |||
l := info.nConstraint | |||
s := (*[1 << 30]C.struct_sqlite3_index_constraint_usage)(unsafe.Pointer(info.aConstraintUsage))[:l:l] | |||
index := 1 | |||
for i := C.int(0); i < info.nConstraint; i++ { | |||
if res.Used[i] { | |||
s[i].argvIndex = C.int(index) | |||
s[i].omit = C.uchar(1) | |||
index++ | |||
} | |||
} | |||
info.idxNum = C.int(res.IdxNum) | |||
idxStr := C.CString(res.IdxStr) | |||
defer C.free(unsafe.Pointer(idxStr)) | |||
info.idxStr = idxStr | |||
info.needToFreeIdxStr = C.int(0) | |||
if res.AlreadyOrdered { | |||
info.orderByConsumed = C.int(1) | |||
} | |||
info.estimatedCost = C.double(res.EstimatedCost) | |||
info.estimatedRows = C.sqlite3_int64(res.EstimatedRows) | |||
return nil | |||
} | |||
//export goVClose | |||
func goVClose(pCursor unsafe.Pointer) *C.char { | |||
vtc := lookupHandle(uintptr(pCursor)).(*sqliteVTabCursor) | |||
err := vtc.vTabCursor.Close() | |||
if err != nil { | |||
return mPrintf("%s", err.Error()) | |||
} | |||
return nil | |||
} | |||
//export goMDestroy | |||
func goMDestroy(pClientData unsafe.Pointer) { | |||
m := lookupHandle(uintptr(pClientData)).(*sqliteModule) | |||
m.module.DestroyModule() | |||
} | |||
//export goVFilter | |||
func goVFilter(pCursor unsafe.Pointer, idxNum C.int, idxName *C.char, argc C.int, argv **C.sqlite3_value) *C.char { | |||
vtc := lookupHandle(uintptr(pCursor)).(*sqliteVTabCursor) | |||
args := (*[(math.MaxInt32 - 1) / unsafe.Sizeof((*C.sqlite3_value)(nil))]*C.sqlite3_value)(unsafe.Pointer(argv))[:argc:argc] | |||
vals := make([]interface{}, 0, argc) | |||
for _, v := range args { | |||
conv, err := callbackArgGeneric(v) | |||
if err != nil { | |||
return mPrintf("%s", err.Error()) | |||
} | |||
vals = append(vals, conv.Interface()) | |||
} | |||
err := vtc.vTabCursor.Filter(int(idxNum), C.GoString(idxName), vals) | |||
if err != nil { | |||
return mPrintf("%s", err.Error()) | |||
} | |||
return nil | |||
} | |||
//export goVNext | |||
func goVNext(pCursor unsafe.Pointer) *C.char { | |||
vtc := lookupHandle(uintptr(pCursor)).(*sqliteVTabCursor) | |||
err := vtc.vTabCursor.Next() | |||
if err != nil { | |||
return mPrintf("%s", err.Error()) | |||
} | |||
return nil | |||
} | |||
//export goVEof | |||
func goVEof(pCursor unsafe.Pointer) C.int { | |||
vtc := lookupHandle(uintptr(pCursor)).(*sqliteVTabCursor) | |||
err := vtc.vTabCursor.EOF() | |||
if err { | |||
return 1 | |||
} | |||
return 0 | |||
} | |||
//export goVColumn | |||
func goVColumn(pCursor, cp unsafe.Pointer, col C.int) *C.char { | |||
vtc := lookupHandle(uintptr(pCursor)).(*sqliteVTabCursor) | |||
c := (*SQLiteContext)(cp) | |||
err := vtc.vTabCursor.Column(c, int(col)) | |||
if err != nil { | |||
return mPrintf("%s", err.Error()) | |||
} | |||
return nil | |||
} | |||
//export goVRowid | |||
func goVRowid(pCursor unsafe.Pointer, pRowid *C.sqlite3_int64) *C.char { | |||
vtc := lookupHandle(uintptr(pCursor)).(*sqliteVTabCursor) | |||
rowid, err := vtc.vTabCursor.Rowid() | |||
if err != nil { | |||
return mPrintf("%s", err.Error()) | |||
} | |||
*pRowid = C.sqlite3_int64(rowid) | |||
return nil | |||
} | |||
//export goVUpdate | |||
func goVUpdate(pVTab unsafe.Pointer, argc C.int, argv **C.sqlite3_value, pRowid *C.sqlite3_int64) *C.char { | |||
vt := lookupHandle(uintptr(pVTab)).(*sqliteVTab) | |||
var tname string | |||
if n, ok := vt.vTab.(interface { | |||
TableName() string | |||
}); ok { | |||
tname = n.TableName() + " " | |||
} | |||
err := fmt.Errorf("virtual %s table %sis read-only", vt.module.name, tname) | |||
if v, ok := vt.vTab.(VTabUpdater); ok { | |||
// convert argv | |||
args := (*[(math.MaxInt32 - 1) / unsafe.Sizeof((*C.sqlite3_value)(nil))]*C.sqlite3_value)(unsafe.Pointer(argv))[:argc:argc] | |||
vals := make([]interface{}, 0, argc) | |||
for _, v := range args { | |||
conv, err := callbackArgGeneric(v) | |||
if err != nil { | |||
return mPrintf("%s", err.Error()) | |||
} | |||
// work around for SQLITE_NULL | |||
x := conv.Interface() | |||
if z, ok := x.([]byte); ok && z == nil { | |||
x = nil | |||
} | |||
vals = append(vals, x) | |||
} | |||
switch { | |||
case argc == 1: | |||
err = v.Delete(vals[0]) | |||
case argc > 1 && vals[0] == nil: | |||
var id int64 | |||
id, err = v.Insert(vals[1], vals[2:]) | |||
if err == nil { | |||
*pRowid = C.sqlite3_int64(id) | |||
} | |||
case argc > 1: | |||
err = v.Update(vals[1], vals[2:]) | |||
} | |||
} | |||
if err != nil { | |||
return mPrintf("%s", err.Error()) | |||
} | |||
return nil | |||
} | |||
// Module is a "virtual table module", it defines the implementation of a | |||
// virtual tables. See: http://sqlite.org/c3ref/module.html | |||
type Module interface { | |||
// http://sqlite.org/vtab.html#xcreate | |||
Create(c *SQLiteConn, args []string) (VTab, error) | |||
// http://sqlite.org/vtab.html#xconnect | |||
Connect(c *SQLiteConn, args []string) (VTab, error) | |||
// http://sqlite.org/c3ref/create_module.html | |||
DestroyModule() | |||
} | |||
// VTab describes a particular instance of the virtual table. | |||
// See: http://sqlite.org/c3ref/vtab.html | |||
type VTab interface { | |||
// http://sqlite.org/vtab.html#xbestindex | |||
BestIndex([]InfoConstraint, []InfoOrderBy) (*IndexResult, error) | |||
// http://sqlite.org/vtab.html#xdisconnect | |||
Disconnect() error | |||
// http://sqlite.org/vtab.html#sqlite3_module.xDestroy | |||
Destroy() error | |||
// http://sqlite.org/vtab.html#xopen | |||
Open() (VTabCursor, error) | |||
} | |||
// VTabUpdater is a type that allows a VTab to be inserted, updated, or | |||
// deleted. | |||
// See: https://sqlite.org/vtab.html#xupdate | |||
type VTabUpdater interface { | |||
Delete(interface{}) error | |||
Insert(interface{}, []interface{}) (int64, error) | |||
Update(interface{}, []interface{}) error | |||
} | |||
// VTabCursor describes cursors that point into the virtual table and are used | |||
// to loop through the virtual table. See: http://sqlite.org/c3ref/vtab_cursor.html | |||
type VTabCursor interface { | |||
// http://sqlite.org/vtab.html#xclose | |||
Close() error | |||
// http://sqlite.org/vtab.html#xfilter | |||
Filter(idxNum int, idxStr string, vals []interface{}) error | |||
// http://sqlite.org/vtab.html#xnext | |||
Next() error | |||
// http://sqlite.org/vtab.html#xeof | |||
EOF() bool | |||
// http://sqlite.org/vtab.html#xcolumn | |||
Column(c *SQLiteContext, col int) error | |||
// http://sqlite.org/vtab.html#xrowid | |||
Rowid() (int64, error) | |||
} | |||
// DeclareVTab declares the Schema of a virtual table. | |||
// See: http://sqlite.org/c3ref/declare_vtab.html | |||
func (c *SQLiteConn) DeclareVTab(sql string) error { | |||
zSQL := C.CString(sql) | |||
defer C.free(unsafe.Pointer(zSQL)) | |||
rv := C.sqlite3_declare_vtab(c.db, zSQL) | |||
if rv != C.SQLITE_OK { | |||
return c.lastError() | |||
} | |||
return nil | |||
} | |||
// CreateModule registers a virtual table implementation. | |||
// See: http://sqlite.org/c3ref/create_module.html | |||
func (c *SQLiteConn) CreateModule(moduleName string, module Module) error { | |||
mname := C.CString(moduleName) | |||
defer C.free(unsafe.Pointer(mname)) | |||
udm := sqliteModule{c, moduleName, module} | |||
rv := C._sqlite3_create_module(c.db, mname, C.uintptr_t(newHandle(c, &udm))) | |||
if rv != C.SQLITE_OK { | |||
return c.lastError() | |||
} | |||
return nil | |||
} |
@@ -13,7 +13,7 @@ | |||
** This header file defines the SQLite interface for use by | |||
** shared libraries that want to be imported as extensions into | |||
** an SQLite instance. Shared libraries that intend to be loaded | |||
** as extensions by SQLite should #include this file instead of | |||
** as extensions by SQLite should #include this file instead of | |||
** sqlite3.h. | |||
*/ | |||
#ifndef SQLITE3EXT_H | |||
@@ -544,14 +544,14 @@ typedef int (*sqlite3_loadext_entry)( | |||
#endif /* !defined(SQLITE_CORE) && !defined(SQLITE_OMIT_LOAD_EXTENSION) */ | |||
#if !defined(SQLITE_CORE) && !defined(SQLITE_OMIT_LOAD_EXTENSION) | |||
/* This case when the file really is being compiled as a loadable | |||
/* This case when the file really is being compiled as a loadable | |||
** extension */ | |||
# define SQLITE_EXTENSION_INIT1 const sqlite3_api_routines *sqlite3_api=0; | |||
# define SQLITE_EXTENSION_INIT2(v) sqlite3_api=v; | |||
# define SQLITE_EXTENSION_INIT3 \ | |||
extern const sqlite3_api_routines *sqlite3_api; | |||
#else | |||
/* This case when the file is being statically linked into the | |||
/* This case when the file is being statically linked into the | |||
** application */ | |||
# define SQLITE_EXTENSION_INIT1 /*no-op*/ | |||
# define SQLITE_EXTENSION_INIT2(v) (void)v; /* unused parameter */ | |||
@@ -562,4 +562,4 @@ typedef int (*sqlite3_loadext_entry)( | |||
#else // USE_LIBSQLITE3 | |||
// If users really want to link against the system sqlite3 we | |||
// need to make this file a noop. | |||
#endif | |||
#endif |
@@ -1,9 +0,0 @@ | |||
// +build !trace | |||
package sqlite3 | |||
import "errors" | |||
func (c *SQLiteConn) RegisterAggregator(name string, impl interface{}, pure bool) error { | |||
return errors.New("This feature is not implemented") | |||
} |
@@ -690,10 +690,10 @@ | |||
"revisionTime": "2017-02-23T14:12:10Z" | |||
}, | |||
{ | |||
"checksumSHA1": "9FJUwn3EIgASVki+p8IHgWVC5vQ=", | |||
"checksumSHA1": "61HNjGetaBoMp8HBOpuEZRSim8g=", | |||
"path": "github.com/mattn/go-sqlite3", | |||
"revision": "86681de00adef4f8040947b7d35f97000fc5a230", | |||
"revisionTime": "2016-10-28T14:22:18Z" | |||
"revision": "acfa60124032040b9f5a9406f5a772ee16fe845e", | |||
"revisionTime": "2017-07-05T08:25:03Z" | |||
}, | |||
{ | |||
"checksumSHA1": "9mjAkIoPrJdiGcR0pBa81NoFY4U=", | |||