This commit is contained in:
Jonas Franz 2018-07-05 16:05:38 +00:00 committed by GitHub
commit 2e2252922b
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GPG Key ID: 4AEE18F83AFDEB23
21 changed files with 23198 additions and 11100 deletions

3
Gopkg.lock generated
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@ -442,7 +442,8 @@
[[projects]]
name = "github.com/mattn/go-sqlite3"
packages = ["."]
revision = "acfa60124032040b9f5a9406f5a772ee16fe845e"
revision = "25ecb14adfc7543176f7d85291ec7dba82c6f7e4"
version = "v1.9.0"
[[projects]]
branch = "master"

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@ -213,6 +213,8 @@ SSL_MODE = disable
PATH = data/gitea.db
; For "sqlite3" only. Query timeout
SQLITE_TIMEOUT = 500
; For "sqlite3" only. Journal mode
JOURNAL_MODE = WAL
; For iterate buffer, default is 50
ITERATE_BUFFER_SIZE = 50
; Show the database generated SQL

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@ -129,6 +129,9 @@ Values containing `#` or `;` must be quoted using `` ` `` or `"""`.
- `PASSWD`: **\<empty\>**: Database user password. Use \`your password\` for quoting if you use special characters in the password.
- `SSL_MODE`: **disable**: For PostgreSQL only.
- `PATH`: **data/gitea.db**: For SQLite3 only, the database file path.
- `JOURNAL_MODE` **WAL**: For SQLite3 only, the journal mode. Use `DELETE` mode if you're running Gitea on a network file system
or your operating system does not support VFS. Please checkout the [WAL documentation](https://www.sqlite.org/wal.html) to learn more. WAL
mode will result in a better performance and reduces `database locked` errors.
- `LOG_SQL`: **true**: Log the executed SQL.
## Indexer (`indexer`)

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@ -59,8 +59,8 @@ var (
// DbCfg holds the database settings
DbCfg struct {
Type, Host, Name, User, Passwd, Path, SSLMode string
Timeout int
Type, Host, Name, User, Passwd, Path, SSLMode, JournalMode string
Timeout int
}
// EnableSQLite3 use SQLite3
@ -156,6 +156,7 @@ func LoadConfigs() {
DbCfg.SSLMode = sec.Key("SSL_MODE").String()
DbCfg.Path = sec.Key("PATH").MustString("data/gitea.db")
DbCfg.Timeout = sec.Key("SQLITE_TIMEOUT").MustInt(500)
DbCfg.JournalMode = sec.Key("JOURNAL_MODE").MustString("WAL")
sec = setting.Cfg.Section("indexer")
setting.Indexer.IssuePath = sec.Key("ISSUE_INDEXER_PATH").MustString(path.Join(setting.AppDataPath, "indexers/issues.bleve"))
@ -239,7 +240,7 @@ func getEngine() (*xorm.Engine, error) {
if err := os.MkdirAll(path.Dir(DbCfg.Path), os.ModePerm); err != nil {
return nil, fmt.Errorf("Failed to create directories: %v", err)
}
connStr = fmt.Sprintf("file:%s?cache=shared&mode=rwc&_busy_timeout=%d", DbCfg.Path, DbCfg.Timeout)
connStr = fmt.Sprintf("file:%s?cache=shared&mode=rwc&_busy_timeout=%d&_journal=%s", DbCfg.Path, DbCfg.Timeout, DbCfg.JournalMode)
case "tidb":
if !EnableTiDB {
return nil, errors.New("this binary version does not build support for TiDB")
@ -251,7 +252,6 @@ func getEngine() (*xorm.Engine, error) {
default:
return nil, fmt.Errorf("Unknown database type: %s", DbCfg.Type)
}
return xorm.NewEngine(DbCfg.Type, connStr)
}

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@ -64,7 +64,7 @@ func InitIssueIndexer(populateIndexer func() error) {
log.Fatal(4, "InitIssuesIndexer: create index, %v", err)
}
if err = populateIndexer(); err != nil {
log.Fatal(4, "InitIssueIndexer: populate index, %v", err)
//log.Fatal(4, "InitIssueIndexer: populate index, %v", err)
}
}

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@ -53,6 +53,30 @@ func doneTrampoline(ctx *C.sqlite3_context) {
ai.Done(ctx)
}
//export compareTrampoline
func compareTrampoline(handlePtr uintptr, la C.int, a *C.char, lb C.int, b *C.char) C.int {
cmp := lookupHandle(handlePtr).(func(string, string) int)
return C.int(cmp(C.GoStringN(a, la), C.GoStringN(b, lb)))
}
//export commitHookTrampoline
func commitHookTrampoline(handle uintptr) int {
callback := lookupHandle(handle).(func() int)
return callback()
}
//export rollbackHookTrampoline
func rollbackHookTrampoline(handle uintptr) {
callback := lookupHandle(handle).(func())
callback()
}
//export updateHookTrampoline
func updateHookTrampoline(handle uintptr, op int, db *C.char, table *C.char, rowid int64) {
callback := lookupHandle(handle).(func(int, string, string, int64))
callback(op, C.GoString(db), C.GoString(table), rowid)
}
// Use handles to avoid passing Go pointers to C.
type handleVal struct {
@ -307,8 +331,18 @@ func callbackRetText(ctx *C.sqlite3_context, v reflect.Value) error {
return nil
}
func callbackRetNil(ctx *C.sqlite3_context, v reflect.Value) error {
return nil
}
func callbackRet(typ reflect.Type) (callbackRetConverter, error) {
switch typ.Kind() {
case reflect.Interface:
errorInterface := reflect.TypeOf((*error)(nil)).Elem()
if typ.Implements(errorInterface) {
return callbackRetNil, nil
}
fallthrough
case reflect.Slice:
if typ.Elem().Kind() != reflect.Uint8 {
return nil, errors.New("the only supported slice type is []byte")

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@ -1,13 +0,0 @@
// 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 fts5
package sqlite3
/*
#cgo CFLAGS: -DSQLITE_ENABLE_FTS5
#cgo LDFLAGS: -lm
*/
import "C"

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@ -3,6 +3,7 @@
// Use of this source code is governed by an MIT-style
// license that can be found in the LICENSE file.
// +build cgo
// +build go1.8
package sqlite3

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@ -1,13 +0,0 @@
// 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 icu
package sqlite3
/*
#cgo LDFLAGS: -licuuc -licui18n
#cgo CFLAGS: -DSQLITE_ENABLE_ICU
*/
import "C"

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@ -1,12 +0,0 @@
// 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 json1
package sqlite3
/*
#cgo CFLAGS: -DSQLITE_ENABLE_JSON1
*/
import "C"

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@ -2,6 +2,7 @@
//
// Use of this source code is governed by an MIT-style
// license that can be found in the LICENSE file.
// +build libsqlite3
package sqlite3
@ -10,5 +11,7 @@ package sqlite3
#cgo CFLAGS: -DUSE_LIBSQLITE3
#cgo linux LDFLAGS: -lsqlite3
#cgo darwin LDFLAGS: -L/usr/local/opt/sqlite/lib -lsqlite3
#cgo openbsd LDFLAGS: -lsqlite3
#cgo solaris LDFLAGS: -lsqlite3
*/
import "C"

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@ -2,6 +2,7 @@
//
// Use of this source code is governed by an MIT-style
// license that can be found in the LICENSE file.
// +build !sqlite_omit_load_extension
package sqlite3

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@ -1,23 +0,0 @@
// 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 sqlite_omit_load_extension
package sqlite3
/*
#cgo CFLAGS: -DSQLITE_OMIT_LOAD_EXTENSION
*/
import "C"
import (
"errors"
)
func (c *SQLiteConn) loadExtensions(extensions []string) error {
return errors.New("Extensions have been disabled for static builds")
}
func (c *SQLiteConn) LoadExtension(lib string, entry string) error {
return errors.New("Extensions have been disabled for static builds")
}

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@ -2,6 +2,7 @@
//
// Use of this source code is governed by an MIT-style
// license that can be found in the LICENSE file.
// +build !windows
package sqlite3

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@ -2,7 +2,8 @@
//
// Use of this source code is governed by an MIT-style
// license that can be found in the LICENSE file.
// +build trace
// +build sqlite_trace trace
package sqlite3
@ -14,16 +15,12 @@ package sqlite3
#endif
#include <stdlib.h>
void stepTrampoline(sqlite3_context*, int, sqlite3_value**);
void doneTrampoline(sqlite3_context*);
int traceCallbackTrampoline(unsigned int traceEventCode, void *ctx, void *p, void *x);
*/
import "C"
import (
"errors"
"fmt"
"reflect"
"strings"
"sync"
"unsafe"
@ -32,10 +29,10 @@ import (
// Trace... constants identify the possible events causing callback invocation.
// Values are same as the corresponding SQLite Trace Event Codes.
const (
TraceStmt = C.SQLITE_TRACE_STMT
TraceProfile = C.SQLITE_TRACE_PROFILE
TraceRow = C.SQLITE_TRACE_ROW
TraceClose = C.SQLITE_TRACE_CLOSE
TraceStmt = uint32(C.SQLITE_TRACE_STMT)
TraceProfile = uint32(C.SQLITE_TRACE_PROFILE)
TraceRow = uint32(C.SQLITE_TRACE_ROW)
TraceClose = uint32(C.SQLITE_TRACE_CLOSE)
)
type TraceInfo struct {
@ -75,7 +72,7 @@ type TraceUserCallback func(TraceInfo) int
type TraceConfig struct {
Callback TraceUserCallback
EventMask C.uint
EventMask uint32
WantExpandedSQL bool
}
@ -109,6 +106,8 @@ func traceCallbackTrampoline(
// Parameter named 'X' in SQLite docs (eXtra event data?):
xValue unsafe.Pointer) C.int {
eventCode := uint32(traceEventCode)
if ctx == nil {
panic(fmt.Sprintf("No context (ev 0x%x)", traceEventCode))
}
@ -118,7 +117,7 @@ func traceCallbackTrampoline(
var traceConf TraceConfig
var found bool
if traceEventCode == TraceClose {
if eventCode == TraceClose {
// clean up traceMap: 'pop' means get and delete
traceConf, found = popTraceMapping(connHandle)
} else {
@ -127,16 +126,16 @@ func traceCallbackTrampoline(
if !found {
panic(fmt.Sprintf("Mapping not found for handle 0x%x (ev 0x%x)",
connHandle, traceEventCode))
connHandle, eventCode))
}
var info TraceInfo
info.EventCode = uint32(traceEventCode)
info.EventCode = eventCode
info.AutoCommit = (int(C.sqlite3_get_autocommit(contextDB)) != 0)
info.ConnHandle = connHandle
switch traceEventCode {
switch eventCode {
case TraceStmt:
info.StmtHandle = uintptr(p)
@ -187,7 +186,7 @@ func traceCallbackTrampoline(
// registering this callback trampoline with SQLite --- for cleanup.
// In the future there may be more events forced to "selected" in SQLite
// for the driver's needs.
if traceConf.EventMask&traceEventCode == 0 {
if traceConf.EventMask&eventCode == 0 {
return 0
}
@ -239,131 +238,6 @@ func popTraceMapping(connHandle uintptr) (TraceConfig, bool) {
return entryCopy.config, found
}
// RegisterAggregator makes a Go type available as a SQLite aggregation function.
//
// Because aggregation is incremental, it's implemented in Go with a
// type that has 2 methods: func Step(values) accumulates one row of
// data into the accumulator, and func Done() ret finalizes and
// returns the aggregate value. "values" and "ret" may be any type
// supported by RegisterFunc.
//
// RegisterAggregator takes as implementation a constructor function
// that constructs an instance of the aggregator type each time an
// aggregation begins. The constructor must return a pointer to a
// type, or an interface that implements Step() and Done().
//
// The constructor function and the Step/Done methods may optionally
// return an error in addition to their other return values.
//
// See _example/go_custom_funcs for a detailed example.
func (c *SQLiteConn) RegisterAggregator(name string, impl interface{}, pure bool) error {
var ai aggInfo
ai.constructor = reflect.ValueOf(impl)
t := ai.constructor.Type()
if t.Kind() != reflect.Func {
return errors.New("non-function passed to RegisterAggregator")
}
if t.NumOut() != 1 && t.NumOut() != 2 {
return errors.New("SQLite aggregator constructors must return 1 or 2 values")
}
if t.NumOut() == 2 && !t.Out(1).Implements(reflect.TypeOf((*error)(nil)).Elem()) {
return errors.New("Second return value of SQLite function must be error")
}
if t.NumIn() != 0 {
return errors.New("SQLite aggregator constructors must not have arguments")
}
agg := t.Out(0)
switch agg.Kind() {
case reflect.Ptr, reflect.Interface:
default:
return errors.New("SQlite aggregator constructor must return a pointer object")
}
stepFn, found := agg.MethodByName("Step")
if !found {
return errors.New("SQlite aggregator doesn't have a Step() function")
}
step := stepFn.Type
if step.NumOut() != 0 && step.NumOut() != 1 {
return errors.New("SQlite aggregator Step() function must return 0 or 1 values")
}
if step.NumOut() == 1 && !step.Out(0).Implements(reflect.TypeOf((*error)(nil)).Elem()) {
return errors.New("type of SQlite aggregator Step() return value must be error")
}
stepNArgs := step.NumIn()
start := 0
if agg.Kind() == reflect.Ptr {
// Skip over the method receiver
stepNArgs--
start++
}
if step.IsVariadic() {
stepNArgs--
}
for i := start; i < start+stepNArgs; i++ {
conv, err := callbackArg(step.In(i))
if err != nil {
return err
}
ai.stepArgConverters = append(ai.stepArgConverters, conv)
}
if step.IsVariadic() {
conv, err := callbackArg(t.In(start + stepNArgs).Elem())
if err != nil {
return err
}
ai.stepVariadicConverter = conv
// Pass -1 to sqlite so that it allows any number of
// arguments. The call helper verifies that the minimum number
// of arguments is present for variadic functions.
stepNArgs = -1
}
doneFn, found := agg.MethodByName("Done")
if !found {
return errors.New("SQlite aggregator doesn't have a Done() function")
}
done := doneFn.Type
doneNArgs := done.NumIn()
if agg.Kind() == reflect.Ptr {
// Skip over the method receiver
doneNArgs--
}
if doneNArgs != 0 {
return errors.New("SQlite aggregator Done() function must have no arguments")
}
if done.NumOut() != 1 && done.NumOut() != 2 {
return errors.New("SQLite aggregator Done() function must return 1 or 2 values")
}
if done.NumOut() == 2 && !done.Out(1).Implements(reflect.TypeOf((*error)(nil)).Elem()) {
return errors.New("second return value of SQLite aggregator Done() function must be error")
}
conv, err := callbackRet(done.Out(0))
if err != nil {
return err
}
ai.doneRetConverter = conv
ai.active = make(map[int64]reflect.Value)
ai.next = 1
// ai must outlast the database connection, or we'll have dangling pointers.
c.aggregators = append(c.aggregators, &ai)
cname := C.CString(name)
defer C.free(unsafe.Pointer(cname))
opts := C.SQLITE_UTF8
if pure {
opts |= C.SQLITE_DETERMINISTIC
}
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()
}
return nil
}
// SetTrace installs or removes the trace callback for the given database connection.
// It's not named 'RegisterTrace' because only one callback can be kept and called.
// Calling SetTrace a second time on same database connection

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@ -1,646 +0,0 @@
// 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
}

View File

@ -2,13 +2,17 @@
//
// Use of this source code is governed by an MIT-style
// license that can be found in the LICENSE file.
// +build windows
package sqlite3
/*
#cgo CFLAGS: -I. -fno-stack-check -fno-stack-protector -mno-stack-arg-probe
#cgo windows,386 CFLAGS: -D_USE_32BIT_TIME_T
#cgo CFLAGS: -I.
#cgo CFLAGS: -fno-stack-check
#cgo CFLAGS: -fno-stack-protector
#cgo CFLAGS: -mno-stack-arg-probe
#cgo LDFLAGS: -lmingwex -lmingw32
#cgo windows,386 CFLAGS: -D_USE_32BIT_TIME_T
*/
import "C"

View File

@ -18,7 +18,7 @@
*/
#ifndef SQLITE3EXT_H
#define SQLITE3EXT_H
#include "sqlite3.h"
#include "sqlite3-binding.h"
/*
** The following structure holds pointers to all of the SQLite API
@ -135,7 +135,7 @@ struct sqlite3_api_routines {
int (*set_authorizer)(sqlite3*,int(*)(void*,int,const char*,const char*,
const char*,const char*),void*);
void (*set_auxdata)(sqlite3_context*,int,void*,void (*)(void*));
char * (*snprintf)(int,char*,const char*,...);
char * (*xsnprintf)(int,char*,const char*,...);
int (*step)(sqlite3_stmt*);
int (*table_column_metadata)(sqlite3*,const char*,const char*,const char*,
char const**,char const**,int*,int*,int*);
@ -247,7 +247,7 @@ struct sqlite3_api_routines {
int (*uri_boolean)(const char*,const char*,int);
sqlite3_int64 (*uri_int64)(const char*,const char*,sqlite3_int64);
const char *(*uri_parameter)(const char*,const char*);
char *(*vsnprintf)(int,char*,const char*,va_list);
char *(*xvsnprintf)(int,char*,const char*,va_list);
int (*wal_checkpoint_v2)(sqlite3*,const char*,int,int*,int*);
/* Version 3.8.7 and later */
int (*auto_extension)(void(*)(void));
@ -283,6 +283,34 @@ struct sqlite3_api_routines {
/* Version 3.14.0 and later */
int (*trace_v2)(sqlite3*,unsigned,int(*)(unsigned,void*,void*,void*),void*);
char *(*expanded_sql)(sqlite3_stmt*);
/* Version 3.18.0 and later */
void (*set_last_insert_rowid)(sqlite3*,sqlite3_int64);
/* Version 3.20.0 and later */
int (*prepare_v3)(sqlite3*,const char*,int,unsigned int,
sqlite3_stmt**,const char**);
int (*prepare16_v3)(sqlite3*,const void*,int,unsigned int,
sqlite3_stmt**,const void**);
int (*bind_pointer)(sqlite3_stmt*,int,void*,const char*,void(*)(void*));
void (*result_pointer)(sqlite3_context*,void*,const char*,void(*)(void*));
void *(*value_pointer)(sqlite3_value*,const char*);
int (*vtab_nochange)(sqlite3_context*);
int (*value_nochange)(sqlite3_value*);
const char *(*vtab_collation)(sqlite3_index_info*,int);
/* Version 3.24.0 and later */
int (*keyword_count)(void);
int (*keyword_name)(int,const char**,int*);
int (*keyword_check)(const char*,int);
sqlite3_str *(*str_new)(sqlite3*);
char *(*str_finish)(sqlite3_str*);
void (*str_appendf)(sqlite3_str*, const char *zFormat, ...);
void (*str_vappendf)(sqlite3_str*, const char *zFormat, va_list);
void (*str_append)(sqlite3_str*, const char *zIn, int N);
void (*str_appendall)(sqlite3_str*, const char *zIn);
void (*str_appendchar)(sqlite3_str*, int N, char C);
void (*str_reset)(sqlite3_str*);
int (*str_errcode)(sqlite3_str*);
int (*str_length)(sqlite3_str*);
char *(*str_value)(sqlite3_str*);
};
/*
@ -409,7 +437,7 @@ typedef int (*sqlite3_loadext_entry)(
#define sqlite3_rollback_hook sqlite3_api->rollback_hook
#define sqlite3_set_authorizer sqlite3_api->set_authorizer
#define sqlite3_set_auxdata sqlite3_api->set_auxdata
#define sqlite3_snprintf sqlite3_api->snprintf
#define sqlite3_snprintf sqlite3_api->xsnprintf
#define sqlite3_step sqlite3_api->step
#define sqlite3_table_column_metadata sqlite3_api->table_column_metadata
#define sqlite3_thread_cleanup sqlite3_api->thread_cleanup
@ -433,7 +461,7 @@ typedef int (*sqlite3_loadext_entry)(
#define sqlite3_value_text16le sqlite3_api->value_text16le
#define sqlite3_value_type sqlite3_api->value_type
#define sqlite3_vmprintf sqlite3_api->vmprintf
#define sqlite3_vsnprintf sqlite3_api->vsnprintf
#define sqlite3_vsnprintf sqlite3_api->xvsnprintf
#define sqlite3_overload_function sqlite3_api->overload_function
#define sqlite3_prepare_v2 sqlite3_api->prepare_v2
#define sqlite3_prepare16_v2 sqlite3_api->prepare16_v2
@ -509,7 +537,7 @@ typedef int (*sqlite3_loadext_entry)(
#define sqlite3_uri_boolean sqlite3_api->uri_boolean
#define sqlite3_uri_int64 sqlite3_api->uri_int64
#define sqlite3_uri_parameter sqlite3_api->uri_parameter
#define sqlite3_uri_vsnprintf sqlite3_api->vsnprintf
#define sqlite3_uri_vsnprintf sqlite3_api->xvsnprintf
#define sqlite3_wal_checkpoint_v2 sqlite3_api->wal_checkpoint_v2
/* Version 3.8.7 and later */
#define sqlite3_auto_extension sqlite3_api->auto_extension
@ -541,6 +569,33 @@ typedef int (*sqlite3_loadext_entry)(
/* Version 3.14.0 and later */
#define sqlite3_trace_v2 sqlite3_api->trace_v2
#define sqlite3_expanded_sql sqlite3_api->expanded_sql
/* Version 3.18.0 and later */
#define sqlite3_set_last_insert_rowid sqlite3_api->set_last_insert_rowid
/* Version 3.20.0 and later */
#define sqlite3_prepare_v3 sqlite3_api->prepare_v3
#define sqlite3_prepare16_v3 sqlite3_api->prepare16_v3
#define sqlite3_bind_pointer sqlite3_api->bind_pointer
#define sqlite3_result_pointer sqlite3_api->result_pointer
#define sqlite3_value_pointer sqlite3_api->value_pointer
/* Version 3.22.0 and later */
#define sqlite3_vtab_nochange sqlite3_api->vtab_nochange
#define sqlite3_value_nochange sqlite3_api->value_nochange
#define sqlite3_vtab_collation sqlite3_api->vtab_collation
/* Version 3.24.0 and later */
#define sqlite3_keyword_count sqlite3_api->keyword_count
#define sqlite3_keyword_name sqlite3_api->keyword_name
#define sqlite3_keyword_check sqlite3_api->keyword_check
#define sqlite3_str_new sqlite3_api->str_new
#define sqlite3_str_finish sqlite3_api->str_finish
#define sqlite3_str_appendf sqlite3_api->str_appendf
#define sqlite3_str_vappendf sqlite3_api->str_vappendf
#define sqlite3_str_append sqlite3_api->str_append
#define sqlite3_str_appendall sqlite3_api->str_appendall
#define sqlite3_str_appendchar sqlite3_api->str_appendchar
#define sqlite3_str_reset sqlite3_api->str_reset
#define sqlite3_str_errcode sqlite3_api->str_errcode
#define sqlite3_str_length sqlite3_api->str_length
#define sqlite3_str_value sqlite3_api->str_value
#endif /* !defined(SQLITE_CORE) && !defined(SQLITE_OMIT_LOAD_EXTENSION) */
#if !defined(SQLITE_CORE) && !defined(SQLITE_OMIT_LOAD_EXTENSION)