re
/
go-sqlite3
forked from mirror/go-sqlite3
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Merge branch 'master' into see

This commit is contained in:
mattn 2018-04-19 16:43:12 +09:00 committed by GitHub
parent 7c9aedc574 a72efd674f
commit 47ea5383fd
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
14 changed files with 18219 additions and 8853 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
README.md
View File

@ -20,7 +20,7 @@ This package can be installed with the go get command:
_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.
However, after you have built and installed _go-sqlite3_ with `go install github.com/mattn/go-sqlite3` (which requires gcc), you can build your app without relying on gcc in future.
Documentation
-------------
@ -69,7 +69,7 @@ FAQ
* 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).
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), [#274](https://github.com/mattn/go-sqlite3/issues/274).
* Why is it racy if I use a `sql.Open("sqlite3", ":memory:")` database?

2
_example/trace/main.go
View File

@ -95,7 +95,7 @@ func main() {
ConnectHook: func(conn *sqlite3.SQLiteConn) error {
err := conn.SetTrace(&sqlite3.TraceConfig{
Callback: traceCallback,
EventMask: uint(eventMask),
EventMask: eventMask,
WantExpandedSQL: true,
})
return err

4
error_test.go
View File

@ -15,8 +15,8 @@ import (
func TestSimpleError(t *testing.T) {
e := ErrError.Error()
if e != "SQL logic error or missing database" {
t.Error("wrong error code:" + e)
if e != "SQL logic error or missing database" && e != "SQL logic error" {
t.Error("wrong error code: " + e)
}
}

25544
sqlite3-binding.c
View File

File diff suppressed because it is too large Load Diff

1235
sqlite3-binding.h
View File

File diff suppressed because it is too large Load Diff

95
sqlite3.go
View File

@ -1,3 +1,5 @@
// +build cgo
// Copyright (C) 2014 Yasuhiro Matsumoto <mattn.jp@gmail.com>.
//
// Use of this source code is governed by an MIT-style
@ -7,7 +9,8 @@ package sqlite3
/*
#cgo CFLAGS: -std=gnu99
#cgo CFLAGS: -DSQLITE_ENABLE_RTREE -DSQLITE_THREADSAFE=1
#cgo CFLAGS: -DSQLITE_ENABLE_RTREE -DSQLITE_THREADSAFE=1 -DHAVE_USLEEP=1
#cgo linux,!android CFLAGS: -DHAVE_PREAD64=1 -DHAVE_PWRITE64=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
@ -136,6 +139,7 @@ static int _sqlite3_limit(sqlite3* db, int limitId, int newLimit) {
*/
import "C"
import (
"context"
"database/sql"
"database/sql/driver"
"errors"
@ -149,8 +153,6 @@ import (
"sync"
"time"
"unsafe"
"golang.org/x/net/context"
)
// SQLiteTimestampFormats is timestamp formats understood by both this module
@ -171,6 +173,12 @@ var SQLiteTimestampFormats = []string{
"2006-01-02",
}
const (
columnDate string = "date"
columnDatetime string = "datetime"
columnTimestamp string = "timestamp"
)
func init() {
sql.Register("sqlite3", &SQLiteDriver{})
}
@ -390,7 +398,7 @@ func (c *SQLiteConn) RegisterCommitHook(callback func() int) {
if callback == nil {
C.sqlite3_commit_hook(c.db, nil, nil)
} else {
C.sqlite3_commit_hook(c.db, (*[0]byte)(unsafe.Pointer(C.commitHookTrampoline)), unsafe.Pointer(newHandle(c, callback)))
C.sqlite3_commit_hook(c.db, (*[0]byte)(C.commitHookTrampoline), unsafe.Pointer(newHandle(c, callback)))
}
}
@ -403,7 +411,7 @@ func (c *SQLiteConn) RegisterRollbackHook(callback func()) {
if callback == nil {
C.sqlite3_rollback_hook(c.db, nil, nil)
} else {
C.sqlite3_rollback_hook(c.db, (*[0]byte)(unsafe.Pointer(C.rollbackHookTrampoline)), unsafe.Pointer(newHandle(c, callback)))
C.sqlite3_rollback_hook(c.db, (*[0]byte)(C.rollbackHookTrampoline), unsafe.Pointer(newHandle(c, callback)))
}
}
@ -420,7 +428,7 @@ func (c *SQLiteConn) RegisterUpdateHook(callback func(int, string, string, int64
if callback == nil {
C.sqlite3_update_hook(c.db, nil, nil)
} else {
C.sqlite3_update_hook(c.db, (*[0]byte)(unsafe.Pointer(C.updateHookTrampoline)), unsafe.Pointer(newHandle(c, callback)))
C.sqlite3_update_hook(c.db, (*[0]byte)(C.updateHookTrampoline), unsafe.Pointer(newHandle(c, callback)))
}
}
@ -502,7 +510,7 @@ func (c *SQLiteConn) RegisterFunc(name string, impl interface{}, pure bool) erro
}
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)))
return C._sqlite3_create_function(db, zFunctionName, nArg, eTextRep, C.uintptr_t(pApp), (*[0]byte)(xFunc), (*[0]byte)(xStep), (*[0]byte)(xFinal))
}
// RegisterAggregator makes a Go type available as a SQLite aggregation function.
@ -783,6 +791,8 @@ func errorString(err Error) string {
// Enable or disable recursive triggers. X can be 1 or 0.
// _crypto_key=XXX
// Specify symmetric crypto key for use by SEE. X must be text key without quotes.
// _mutex=XXX
// Specify mutex mode. XXX can be "no", "full".
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")
@ -794,6 +804,7 @@ func (d *SQLiteDriver) Open(dsn string) (driver.Conn, error) {
foreignKeys := -1
recursiveTriggers := -1
cryptoKey := ""
mutex := C.int(C.SQLITE_OPEN_FULLMUTEX)
pos := strings.IndexRune(dsn, '?')
if pos >= 1 {
params, err := url.ParseQuery(dsn[pos+1:])
@ -863,6 +874,18 @@ func (d *SQLiteDriver) Open(dsn string) (driver.Conn, error) {
// _crypto_key
cryptoKey = params.Get("_crypto_key")
// _mutex
if val := params.Get("_mutex"); val != "" {
switch val {
case "no":
mutex = C.SQLITE_OPEN_NOMUTEX
case "full":
mutex = C.SQLITE_OPEN_FULLMUTEX
default:
return nil, fmt.Errorf("Invalid _mutex: %v", val)
}
}
if !strings.HasPrefix(dsn, "file:") {
dsn = dsn[:pos]
}
@ -872,9 +895,7 @@ func (d *SQLiteDriver) Open(dsn string) (driver.Conn, error) {
name := C.CString(dsn)
defer C.free(unsafe.Pointer(name))
rv := C._sqlite3_open_v2(name, &db,
C.SQLITE_OPEN_FULLMUTEX|
C.SQLITE_OPEN_READWRITE|
C.SQLITE_OPEN_CREATE,
mutex|C.SQLITE_OPEN_READWRITE|C.SQLITE_OPEN_CREATE,
nil)
if rv != 0 {
return nil, Error{Code: ErrNo(rv)}
@ -1087,7 +1108,7 @@ func (s *SQLiteStmt) bind(args []namedValue) error {
case int64:
rv = C.sqlite3_bind_int64(s.s, n, C.sqlite3_int64(v))
case bool:
if bool(v) {
if v {
rv = C.sqlite3_bind_int(s.s, n, 1)
} else {
rv = C.sqlite3_bind_int(s.s, n, 0)
@ -1138,18 +1159,20 @@ func (s *SQLiteStmt) query(ctx context.Context, args []namedValue) (driver.Rows,
done: make(chan struct{}),
}
go func(db *C.sqlite3) {
select {
case <-ctx.Done():
if ctxdone := ctx.Done(); ctxdone != nil {
go func(db *C.sqlite3) {
select {
case <-ctxdone:
select {
case <-rows.done:
default:
C.sqlite3_interrupt(db)
rows.Close()
}
case <-rows.done:
default:
C.sqlite3_interrupt(db)
rows.Close()
}
case <-rows.done:
}
}(s.c.db)
}(s.c.db)
}
return rows, nil
}
@ -1183,15 +1206,21 @@ func (s *SQLiteStmt) exec(ctx context.Context, args []namedValue) (driver.Result
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)
if ctxdone := ctx.Done(); ctxdone != nil {
done := make(chan struct{})
defer close(done)
go func(db *C.sqlite3) {
select {
case <-done:
case <-ctxdone:
select {
case <-done:
default:
C.sqlite3_interrupt(db)
}
}
}(s.c.db)
}
var rowid, changes C.longlong
rv := C._sqlite3_step(s.s, &rowid, &changes)
@ -1285,7 +1314,7 @@ func (rc *SQLiteRows) Next(dest []driver.Value) error {
case C.SQLITE_INTEGER:
val := int64(C.sqlite3_column_int64(rc.s.s, C.int(i)))
switch rc.decltype[i] {
case "timestamp", "datetime", "date":
case columnTimestamp, columnDatetime, columnDate:
var t time.Time
// Assume a millisecond unix timestamp if it's 13 digits -- too
// large to be a reasonable timestamp in seconds.
@ -1316,10 +1345,10 @@ func (rc *SQLiteRows) Next(dest []driver.Value) error {
n := int(C.sqlite3_column_bytes(rc.s.s, C.int(i)))
switch dest[i].(type) {
case sql.RawBytes:
dest[i] = (*[1 << 30]byte)(unsafe.Pointer(p))[0:n]
dest[i] = (*[1 << 30]byte)(p)[0:n]
default:
slice := make([]byte, n)
copy(slice[:], (*[1 << 30]byte)(unsafe.Pointer(p))[0:n])
copy(slice[:], (*[1 << 30]byte)(p)[0:n])
dest[i] = slice
}
case C.SQLITE_NULL:
@ -1332,7 +1361,7 @@ func (rc *SQLiteRows) Next(dest []driver.Value) error {
s := C.GoStringN((*C.char)(unsafe.Pointer(C.sqlite3_column_text(rc.s.s, C.int(i)))), C.int(n))
switch rc.decltype[i] {
case "timestamp", "datetime", "date":
case columnTimestamp, columnDatetime, columnDate:
var t time.Time
s = strings.TrimSuffix(s, "Z")
for _, format := range SQLiteTimestampFormats {

2
sqlite3_go18.go
View File

@ -1,3 +1,5 @@
// +build cgo
// Copyright (C) 2014 Yasuhiro Matsumoto <mattn.jp@gmail.com>.
//
// Use of this source code is governed by an MIT-style

21
sqlite3_go18_test.go
View File

@ -134,3 +134,24 @@ func TestShortTimeout(t *testing.T) {
t.Fatal(ctx.Err())
}
}
func TestExecCancel(t *testing.T) {
db, err := sql.Open("sqlite3", ":memory:")
if err != nil {
t.Fatal(err)
}
defer db.Close()
if _, err = db.Exec("create table foo (id integer primary key)"); err != nil {
t.Fatal(err)
}
for n := 0; n < 100; n++ {
ctx, cancel := context.WithCancel(context.Background())
_, err = db.ExecContext(ctx, "insert into foo (id) values (?)", n)
cancel()
if err != nil {
t.Fatal(err)
}
}
}

12
sqlite3_solaris.go Normal file
View File

@ -0,0 +1,12 @@
// Copyright (C) 2018 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 solaris
package sqlite3
/*
#cgo CFLAGS: -D__EXTENSIONS__=1
*/
import "C"

11
sqlite3_test.go
View File

@ -563,7 +563,7 @@ func TestBoolean(t *testing.T) {
t.Fatalf("Expected 1 row but %v", counter)
}
if id != 1 && fbool != true {
if id != 1 && !fbool {
t.Fatalf("Value for id 1 should be %v, not %v", bool1, fbool)
}
@ -585,7 +585,7 @@ func TestBoolean(t *testing.T) {
t.Fatalf("Expected 1 row but %v", counter)
}
if id != 2 && fbool != false {
if id != 2 && fbool {
t.Fatalf("Value for id 2 should be %v, not %v", bool2, fbool)
}
@ -1591,10 +1591,7 @@ func BenchmarkCustomFunctions(b *testing.B) {
sql.Register("sqlite3_BenchmarkCustomFunctions", &SQLiteDriver{
ConnectHook: func(conn *SQLiteConn) error {
// Impure function to force sqlite to reexecute it each time.
if err := conn.RegisterFunc("custom_add", customAdd, false); err != nil {
return err
}
return nil
return conn.RegisterFunc("custom_add", customAdd, false)
},
})
})
@ -1701,7 +1698,7 @@ func (db *TestDB) tearDown() {
// q replaces ? parameters if needed
func (db *TestDB) q(sql string) string {
switch db.dialect {
case POSTGRESQL: // repace with $1, $2, ..
case POSTGRESQL: // replace with $1, $2, ..
qrx := regexp.MustCompile(`\?`)
n := 0
return qrx.ReplaceAllStringFunc(sql, func(string) string {

22
sqlite3_trace.go
View File

@ -28,10 +28,10 @@ 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 {
@ -71,7 +71,7 @@ type TraceUserCallback func(TraceInfo) int
type TraceConfig struct {
Callback TraceUserCallback
EventMask C.uint
EventMask uint32
WantExpandedSQL bool
}
@ -105,6 +105,8 @@ 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))
}
@ -114,7 +116,7 @@ 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 {
@ -123,16 +125,16 @@ 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)
@ -183,7 +185,7 @@ 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
}

37
sqlite3ext.h
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 +283,19 @@ 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);
};
/*
@ -409,7 +422,7 @@ 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 +446,7 @@ 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 +522,7 @@ 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 +554,18 @@ 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
#endif /* !defined(SQLITE_CORE) && !defined(SQLITE_OMIT_LOAD_EXTENSION) */
#if !defined(SQLITE_CORE) && !defined(SQLITE_OMIT_LOAD_EXTENSION)

21
static_mock.go Normal file
View File

@ -0,0 +1,21 @@
// +build !cgo
package sqlite3
import (
"database/sql"
"database/sql/driver"
"errors"
)
func init() {
sql.Register("sqlite3", &SQLiteDriverMock{})
}
type SQLiteDriverMock struct{}
var errorMsg = errors.New("Binary was compiled with 'CGO_ENABLED=0', go-sqlite3 requires cgo to work. This is a stub")
func (SQLiteDriverMock) Open(s string) (driver.Conn, error) {
return nil, errorMsg
}

16
tool/upgrade.go
View File

@ -4,6 +4,7 @@ package main
import (
"archive/zip"
"bufio"
"bytes"
"fmt"
"io"
@ -28,7 +29,7 @@ func main() {
var url string
doc.Find("a").Each(func(_ int, s *goquery.Selection) {
if url == "" && strings.HasPrefix(s.Text(), "sqlite-amalgamation-") {
url = "https://www.sqlite.org/2017/" + s.Text()
url = "https://www.sqlite.org/2018/" + s.Text()
}
})
if url == "" {
@ -80,7 +81,18 @@ func main() {
f.Close()
log.Fatal(err)
}
_, err = io.Copy(f, zr)
scanner := bufio.NewScanner(zr)
for scanner.Scan() {
text := scanner.Text()
if text == `#include "sqlite3.h"` {
text = `#include "sqlite3-binding.h"`
}
_, err = fmt.Fprintln(f, text)
if err != nil {
break
}
}
err = scanner.Err()
if err != nil {
zr.Close()
f.Close()