✏️ drop pb in timer

plugin_b14/main.go

@@ -1,3 +1,4 @@
+// Package b14coder base16384 与 tea 加解密
 package b14coder
 
 import (

plugin_diana/data/migrate/text.go

@@ -2,9 +2,9 @@ package main
 
 import (
 	"crypto/md5"
+	"encoding/binary"
 	"fmt"
 	"os"
-	"unsafe"
 
 	"github.com/RomiChan/protobuf/proto"
 	"github.com/wdvxdr1123/ZeroBot/utils/helper"
@@ -37,7 +37,7 @@ func main() {
 		}
 		for _, d := range compo.Array {
 			s := md5.Sum(helper.StringToBytes(d))
-			i := *(*int64)(unsafe.Pointer(&s))
+			i := int64(binary.LittleEndian.Uint64(s[:8]))
 			fmt.Printf("[Diana]id: %d\n", i)
 			err = db.Insert("text", &Text{
 				Id:   i,

plugin_diana/data/text.go

@@ -3,8 +3,8 @@ package data
 
 import (
 	"crypto/md5"
+	"encoding/binary"
 	"os"
-	"unsafe"
 
 	log "github.com/sirupsen/logrus"
 	"github.com/wdvxdr1123/ZeroBot/utils/helper"
@@ -56,8 +56,8 @@ func LoadText() error {
 // AddText 添加小作文
 func AddText(txt string) error {
 	s := md5.Sum(helper.StringToBytes(txt))
-	i := *(*int64)(unsafe.Pointer(&s))
+	i := binary.LittleEndian.Uint64(s[:8])
-	return db.Insert("text", &Text{Id: i, Data: txt})
+	return db.Insert("text", &Text{Id: int64(i), Data: txt})
 }
 
 // RandText 随机小作文

plugin_manager/manager.go

@@ -259,9 +259,9 @@ func init() { // 插件主体
 	engine.OnRegex(`^在(.{1,2})月(.{1,3}日|每?周.?)的(.{1,3})点(.{1,3})分时(用.+)?提醒大家(.*)`, zero.AdminPermission, zero.OnlyGroup).SetBlock(true).SetPriority(40).
 		Handle(func(ctx *zero.Ctx) {
 			dateStrs := ctx.State["regex_matched"].([]string)
-			ts := timer.GetFilledTimer(dateStrs, ctx.Event.SelfID, false)
+			ts := timer.GetFilledTimer(dateStrs, ctx.Event.SelfID, ctx.Event.GroupID, false)
 			if ts.En() {
-				go clock.RegisterTimer(ts, ctx.Event.GroupID, true)
+				go clock.RegisterTimer(ts, true)
 				ctx.SendChain(message.Text("记住了~"))
 			} else {
 				ctx.SendChain(message.Text("参数非法:" + ts.Alert))
@@ -283,8 +283,8 @@ func init() { // 插件主体
 				return
 			}
 			logrus.Debugln("[manager] cron:", dateStrs[1])
-			ts := timer.GetFilledCronTimer(dateStrs[1], alert, url, ctx.Event.SelfID)
+			ts := timer.GetFilledCronTimer(dateStrs[1], alert, url, ctx.Event.SelfID, ctx.Event.GroupID)
-			if clock.RegisterTimer(ts, ctx.Event.GroupID, true) {
+			if clock.RegisterTimer(ts, true) {
 				ctx.SendChain(message.Text("记住了~"))
 			} else {
 				ctx.SendChain(message.Text("参数非法:" + ts.Alert))
@@ -294,8 +294,8 @@ func init() { // 插件主体
 	engine.OnRegex(`^取消在(.{1,2})月(.{1,3}日|每?周.?)的(.{1,3})点(.{1,3})分的提醒`, zero.AdminPermission, zero.OnlyGroup).SetBlock(true).SetPriority(40).
 		Handle(func(ctx *zero.Ctx) {
 			dateStrs := ctx.State["regex_matched"].([]string)
-			ts := timer.GetFilledTimer(dateStrs, ctx.Event.SelfID, true)
+			ts := timer.GetFilledTimer(dateStrs, ctx.Event.SelfID, ctx.Event.GroupID, true)
-			ti := ts.GetTimerInfo(ctx.Event.GroupID)
+			ti := ts.GetTimerID()
 			ok := clock.CancelTimer(ti)
 			if ok {
 				ctx.SendChain(message.Text("取消成功~"))
@@ -307,8 +307,8 @@ func init() { // 插件主体
 	engine.OnRegex(`^取消在"(.*)"的提醒`, zero.AdminPermission, zero.OnlyGroup).SetBlock(true).SetPriority(40).
 		Handle(func(ctx *zero.Ctx) {
 			dateStrs := ctx.State["regex_matched"].([]string)
-			ts := timer.Timer{Cron: dateStrs[1]}
+			ts := timer.Timer{Cron: dateStrs[1], GrpId: ctx.Event.GroupID}
-			ti := ts.GetTimerInfo(ctx.Event.GroupID)
+			ti := ts.GetTimerID()
 			ok := clock.CancelTimer(ti)
 			if ok {
 				ctx.SendChain(message.Text("取消成功~"))

plugin_manager/timer/parse.go

@@ -1,6 +1,8 @@
 package timer
 
 import (
+	"crypto/md5"
+	"encoding/binary"
 	"fmt"
 	"strconv"
 	"strings"
@@ -8,28 +10,37 @@ import (
 	"unicode"
 
 	"github.com/sirupsen/logrus"
+	"github.com/wdvxdr1123/ZeroBot/utils/helper"
 )
 
 // GetTimerInfo 获得标准化定时字符串
-func (ts *Timer) GetTimerInfo(grp int64) string {
+func (ts *Timer) GetTimerInfo() string {
 	if ts.Cron != "" {
-		return fmt.Sprintf("[%d]%s", grp, ts.Cron)
+		return fmt.Sprintf("[%d]%s", ts.GrpId, ts.Cron)
 	}
-	return fmt.Sprintf("[%d]%d月%d日%d周%d:%d", grp, ts.Month(), ts.Day(), ts.Week(), ts.Hour(), ts.Minute())
+	return fmt.Sprintf("[%d]%d月%d日%d周%d:%d", ts.GrpId, ts.Month(), ts.Day(), ts.Week(), ts.Hour(), ts.Minute())
+}
+
+// GetTimerInfo 获得标准化 ID
+func (ts *Timer) GetTimerID() uint32 {
+	key := ts.GetTimerInfo()
+	m := md5.Sum(helper.StringToBytes(key))
+	return binary.LittleEndian.Uint32(m[:4])
 }
 
 // GetFilledCronTimer 获得以cron填充好的ts
-func GetFilledCronTimer(croncmd string, alert string, img string, botqq int64) *Timer {
+func GetFilledCronTimer(croncmd string, alert string, img string, botqq, gid int64) *Timer {
 	var ts Timer
 	ts.Alert = alert
 	ts.Cron = croncmd
 	ts.Url = img
 	ts.Selfid = botqq
+	ts.GrpId = gid
 	return &ts
 }
 
 // GetFilledTimer 获得填充好的ts
-func GetFilledTimer(dateStrs []string, botqq int64, matchDateOnly bool) *Timer {
+func GetFilledTimer(dateStrs []string, botqq, grp int64, matchDateOnly bool) *Timer {
 	monthStr := []rune(dateStrs[1])
 	dayWeekStr := []rune(dateStrs[2])
 	hourStr := []rune(dateStrs[3])
@@ -43,7 +54,8 @@ func GetFilledTimer(dateStrs []string, botqq int64, matchDateOnly bool) *Timer {
 	}
 	ts.SetMonth(mon)
 	lenOfDW := len(dayWeekStr)
-	if lenOfDW == 4 { // 包括末尾的"日"
+	switch {
+	case lenOfDW == 4: // 包括末尾的"日"
 		dayWeekStr = []rune{dayWeekStr[0], dayWeekStr[2]} // 去除中间的十
 		d := chineseNum2Int(dayWeekStr)
 		if (d != -1 && d <= 0) || d > 31 { // 日期非法
@@ -51,7 +63,7 @@ func GetFilledTimer(dateStrs []string, botqq int64, matchDateOnly bool) *Timer {
 			return &ts
 		}
 		ts.SetDay(d)
-	} else if dayWeekStr[lenOfDW-1] == rune('日') { // xx日
+	case dayWeekStr[lenOfDW-1] == rune('日'): // xx日
 		dayWeekStr = dayWeekStr[:lenOfDW-1]
 		d := chineseNum2Int(dayWeekStr)
 		if (d != -1 && d <= 0) || d > 31 { // 日期非法
@@ -59,9 +71,9 @@ func GetFilledTimer(dateStrs []string, botqq int64, matchDateOnly bool) *Timer {
 			return &ts
 		}
 		ts.SetDay(d)
-	} else if dayWeekStr[0] == rune('每') { // 每周
+	case dayWeekStr[0] == rune('每'): // 每周
 		ts.SetWeek(-1)
-	} else { // 周x
+	default: // 周x
 		w := chineseNum2Int(dayWeekStr[1:])
 		if w == 7 { // 周天是0
 			w = 0
@@ -105,6 +117,7 @@ func GetFilledTimer(dateStrs []string, botqq int64, matchDateOnly bool) *Timer {
 		ts.SetEn(true)
 	}
 	ts.Selfid = botqq
+	ts.GrpId = grp
 	return &ts
 }
 
@@ -116,13 +129,14 @@ func chineseNum2Int(rs []rune) int {
 	if unicode.IsDigit(rs[0]) { // 默认可能存在的第二位也为int
 		r, _ = strconv.Atoi(string(rs))
 	} else {
-		if rs[0] == mai {
+		switch {
+		case rs[0] == mai:
 			if l == 2 {
 				r = -chineseChar2Int(rs[1])
 			}
-		} else if l == 1 {
+		case l == 1:
 			r = chineseChar2Int(rs[0])
-		} else {
+		default:
 			ten := chineseChar2Int(rs[0])
 			if ten != 10 {
 				ten *= 10

plugin_manager/timer/sleep.go

@@ -56,11 +56,12 @@ func (ts *Timer) nextWakeTime() (date time.Time) {
 	} else {
 		stable |= 0x8
 	}
-	if d < 0 {
+	switch {
+	case d < 0:
 		d = date.Day()
-	} else if d > 0 {
+	case d > 0:
 		stable |= 0x4
-	} else {
+	default:
 		d = date.Day()
 		if w >= 0 {
 			stable |= 0x2
@@ -148,14 +149,14 @@ func (ts *Timer) nextWakeTime() (date time.Time) {
 	return date
 }
 
-func (ts *Timer) judgeHM(grp int64) {
+func (ts *Timer) judgeHM() {
 	if ts.Hour() < 0 || ts.Hour() == time.Now().Hour() {
 		if ts.Minute() < 0 || ts.Minute() == time.Now().Minute() {
 			if ts.Selfid != 0 {
-				ts.sendmsg(grp, zero.GetBot(ts.Selfid))
+				ts.sendmsg(ts.GrpId, zero.GetBot(ts.Selfid))
 			} else {
 				zero.RangeBot(func(id int64, ctx *zero.Ctx) (_ bool) {
-					ts.sendmsg(grp, ctx)
+					ts.sendmsg(ts.GrpId, ctx)
 					return
 				})
 			}

plugin_manager/timer/timer.db.go

@@ -0,0 +1,26 @@
+package timer
+
+import (
+	"strconv"
+
+	"github.com/FloatTech/ZeroBot-Plugin/utils/sql"
+)
+
+type Timer struct {
+	Id                          uint32 `db:"id"`
+	En1Month4Day5Week3Hour5Min6 int32  `db:"emdwhm"`
+	Selfid                      int64  `db:"sid"`
+	GrpId                       int64  `db:"gid"`
+	Alert                       string `db:"alert"`
+	Cron                        string `db:"cron"`
+	Url                         string `db:"url"`
+}
+
+func (t *Timer) InsertInto(db *sql.Sqlite) error {
+	return db.Insert("timer", t)
+}
+
+func getTimerFrom(db *sql.Sqlite, id uint32) (t Timer, err error) {
+	err = db.Find("timer", &t, "where id = "+strconv.Itoa(int(id)))
+	return
+}

plugin_manager/timer/timer.go

@@ -2,34 +2,28 @@
 package timer
 
 import (
-	"io"
-	"os"
 	"strconv"
 	"strings"
 	"sync"
 	"time"
 
-	"github.com/RomiChan/protobuf/proto"
 	"github.com/fumiama/cron"
 	"github.com/sirupsen/logrus"
 	zero "github.com/wdvxdr1123/ZeroBot"
 	"github.com/wdvxdr1123/ZeroBot/message"
 
 	"github.com/FloatTech/ZeroBot-Plugin/utils/file"
+	"github.com/FloatTech/ZeroBot-Plugin/utils/sql"
 )
 
 type Clock struct {
-	// 记录每个定时器以便取消
+	db       *sql.Sqlite
-	timersmap TimersMap
+	timers   *(map[uint32]*Timer)
-	// 定时器map
-	timers   *(map[string]*Timer)
 	timersmu sync.RWMutex
-	// 定时器存储位置
-	pbfile *string
 	// cron 定时器
 	cron *cron.Cron
 	// entries key <-> cron
-	entries map[string]cron.EntryID
+	entries map[uint32]cron.EntryID
 	entmu   sync.Mutex
 }
 
@@ -43,26 +37,27 @@ var (
 	}
 )
 
-func NewClock(pbfile string) (c Clock) {
+func NewClock(dbfile string) (c Clock) {
-	c.loadTimers(pbfile)
+	c.loadTimers(dbfile)
-	c.timers = &c.timersmap.Timers
-	c.pbfile = &pbfile
 	c.cron = cron.New()
-	c.entries = make(map[string]cron.EntryID)
+	c.entries = make(map[uint32]cron.EntryID)
 	c.cron.Start()
 	return
 }
 
 // RegisterTimer 注册计时器
-func (c *Clock) RegisterTimer(ts *Timer, grp int64, save bool) bool {
+func (c *Clock) RegisterTimer(ts *Timer, save bool) bool {
-	key := ts.GetTimerInfo(grp)
+	var key uint32
+	if save {
+		key = ts.GetTimerID()
+		ts.Id = key
+	} else {
+		key = ts.Id
+	}
 	t, ok := c.GetTimer(key)
 	if t != ts && ok { // 避免重复注册定时器
 		t.SetEn(false)
 	}
-	c.timersmu.Lock()
-	(*c.timers)[key] = ts
-	c.timersmu.Unlock()
 	logrus.Println("[群管]注册计时器", key)
 	if ts.Cron != "" {
 		var ctx *zero.Ctx
@@ -75,33 +70,33 @@ func (c *Clock) RegisterTimer(ts *Timer, grp int64, save bool) bool {
 				return false
 			})
 		}
-		eid, err := c.cron.AddFunc(ts.Cron, func() { ts.sendmsg(grp, ctx) })
+		eid, err := c.cron.AddFunc(ts.Cron, func() { ts.sendmsg(ts.GrpId, ctx) })
 		if err == nil {
 			c.entmu.Lock()
 			c.entries[key] = eid
 			c.entmu.Unlock()
 			if save {
-				c.SaveTimers()
+				err = c.AddTimer(ts)
 			}
-			return true
+			return err == nil
 		}
 		ts.Alert = err.Error()
 	} else {
 		if save {
-			c.SaveTimers()
+			_ = c.AddTimer(ts)
 		}
 		for ts.En() {
 			nextdate := ts.nextWakeTime()
 			sleepsec := time.Until(nextdate)
-			logrus.Printf("[群管]计时器%s将睡眠%ds", key, sleepsec/time.Second)
+			logrus.Printf("[群管]计时器%08x将睡眠%ds", key, sleepsec/time.Second)
 			time.Sleep(sleepsec)
 			if ts.En() {
 				if ts.Month() < 0 || ts.Month() == time.Now().Month() {
 					if ts.Day() < 0 || ts.Day() == time.Now().Day() {
-						ts.judgeHM(grp)
+						ts.judgeHM()
 					} else if ts.Day() == 0 {
 						if ts.Week() < 0 || ts.Week() == time.Now().Weekday() {
-							ts.judgeHM(grp)
+							ts.judgeHM()
 						}
 					}
 				}
@@ -112,8 +107,8 @@ func (c *Clock) RegisterTimer(ts *Timer, grp int64, save bool) bool {
 }
 
 // CancelTimer 取消计时器
-func (c *Clock) CancelTimer(key string) bool {
+func (c *Clock) CancelTimer(key uint32) bool {
-	t, ok := (*c.timers)[key]
+	t, ok := c.GetTimer(key)
 	if ok {
 		if t.Cron != "" {
 			c.entmu.Lock()
@@ -126,41 +121,22 @@ func (c *Clock) CancelTimer(key string) bool {
 		}
 		c.timersmu.Lock()
 		delete(*c.timers, key) // 避免重复取消
+		e := c.db.Del("timer", "where id = "+strconv.Itoa(int(key)))
 		c.timersmu.Unlock()
-		_ = c.SaveTimers()
+		return e == nil
 	}
-	return ok
+	return false
-}
-
-// SaveTimers 保存当前计时器
-func (c *Clock) SaveTimers() error {
-	c.timersmu.RLock()
-	data, err := proto.Marshal(&c.timersmap)
-	c.timersmu.RUnlock()
-	if err == nil {
-		c.timersmu.Lock()
-		defer c.timersmu.Unlock()
-		f, err1 := os.OpenFile(*c.pbfile, os.O_WRONLY|os.O_TRUNC|os.O_CREATE, 0644)
-		if err1 != nil {
-			return err1
-		} else {
-			_, err2 := f.Write(data)
-			f.Close()
-			return err2
-		}
-	}
-	return err
 }
 
 // ListTimers 列出本群所有计时器
 func (c *Clock) ListTimers(grpID int64) []string {
 	// 数组默认长度为map长度,后面append时,不需要重新申请内存和拷贝,效率很高
 	if c.timers != nil {
-		g := strconv.FormatInt(grpID, 10)
 		c.timersmu.RLock()
 		keys := make([]string, 0, len(*c.timers))
-		for k := range *c.timers {
+		for _, v := range *c.timers {
-			if strings.Contains(k, g) {
+			if v.GrpId == grpID {
+				k := v.GetTimerInfo()
 				start := strings.Index(k, "]")
 				msg := strings.ReplaceAll(k[start+1:]+"\n", "-1", "每")
 				msg = strings.ReplaceAll(msg, "月0日0周", "月周天")
@@ -176,35 +152,32 @@ func (c *Clock) ListTimers(grpID int64) []string {
 	}
 }
 
-func (c *Clock) GetTimer(key string) (t *Timer, ok bool) {
+func (c *Clock) GetTimer(key uint32) (t *Timer, ok bool) {
 	c.timersmu.RLock()
 	t, ok = (*c.timers)[key]
 	c.timersmu.RUnlock()
 	return
 }
 
-func (c *Clock) loadTimers(pbfile string) {
+func (c *Clock) AddTimer(t *Timer) (err error) {
-	if file.IsExist(pbfile) {
+	c.timersmu.Lock()
-		f, err := os.Open(pbfile)
+	(*c.timers)[t.Id] = t
-		if err == nil {
+	err = c.db.Insert("timer", t)
-			data, err := io.ReadAll(f)
+	c.timersmu.Unlock()
-			if err == nil {
-				if len(data) > 0 {
-					err = proto.Unmarshal(data, &c.timersmap)
-					if err == nil {
-						for str, t := range c.timersmap.Timers {
-							grp, err := strconv.ParseInt(str[1:strings.Index(str, "]")], 10, 64)
-							if err == nil {
-								go c.RegisterTimer(t, grp, false)
-							}
-						}
 	return
-					}
+}
-					logrus.Errorln("[群管]读取定时器文件失败，将在下一次保存时覆盖原文件。err:", err)
+
-					logrus.Errorln("[群管]如不希望被覆盖，请运行源码plugin_manager/timers/migrate下的程序将timers.pb刷新为新版")
+func (c *Clock) loadTimers(dbfile string) {
-				}
+	if file.IsExist(dbfile) {
-			}
+		c.db.DBPath = dbfile
-		}
+		err := c.db.Create("timer", &Timer{})
-	}
+		if err == nil {
-	c.timersmap.Timers = make(map[string]*Timer)
+			var t Timer
+			c.db.FindFor("timer", &t, "", func() error {
+				tescape := t
+				go c.RegisterTimer(&tescape, false)
+				return nil
+			})
+		}
+	}
 }

plugin_manager/timer/timer.pb.go

@@ -1,13 +0,0 @@
-package timer
-
-type Timer struct {
-	Alert                       string `protobuf:"bytes,1,opt"`
-	Cron                        string `protobuf:"bytes,2,opt"`
-	En1Month4Day5Week3Hour5Min6 int32  `protobuf:"varint,4,opt"`
-	Selfid                      int64  `protobuf:"varint,8,opt"`
-	Url                         string `protobuf:"bytes,16,opt"`
-}
-
-type TimersMap struct {
-	Timers map[string]*Timer `protobuf:"bytes,1,rep" protobuf_key:"bytes,1,opt" protobuf_val:"bytes,2,opt"`
-}

plugin_manager/timer/wrap.go

@@ -2,10 +2,12 @@ package timer
 
 import "time"
 
+// En isEnabled 1bit
 func (m *Timer) En() (en bool) {
 	return m.En1Month4Day5Week3Hour5Min6&0x800000 != 0
 }
 
+// Month 4bits
 func (m *Timer) Month() (mon time.Month) {
 	mon = time.Month((m.En1Month4Day5Week3Hour5Min6 & 0x780000) >> 19)
 	if mon == 0b1111 {
@@ -14,6 +16,7 @@ func (m *Timer) Month() (mon time.Month) {
 	return
 }
 
+// Day 5bits
 func (m *Timer) Day() (d int) {
 	d = int((m.En1Month4Day5Week3Hour5Min6 & 0x07c000) >> 14)
 	if d == 0b11111 {
@@ -22,6 +25,7 @@ func (m *Timer) Day() (d int) {
 	return
 }
 
+// Week 3bits
 func (m *Timer) Week() (w time.Weekday) {
 	w = time.Weekday((m.En1Month4Day5Week3Hour5Min6 & 0x003800) >> 11)
 	if w == 0b111 {
@@ -30,6 +34,7 @@ func (m *Timer) Week() (w time.Weekday) {
 	return
 }
 
+// Hour 5bits
 func (m *Timer) Hour() (h int) {
 	h = int((m.En1Month4Day5Week3Hour5Min6 & 0x0007c0) >> 6)
 	if h == 0b11111 {
@@ -38,6 +43,7 @@ func (m *Timer) Hour() (h int) {
 	return
 }
 
+// Minute 6bits
 func (m *Timer) Minute() (min int) {
 	min = int(m.En1Month4Day5Week3Hour5Min6 & 0x00003f)
 	if min == 0b111111 {
@@ -46,6 +52,7 @@ func (m *Timer) Minute() (min int) {
 	return
 }
 
+// SetEn ...
 func (m *Timer) SetEn(en bool) {
 	if en {
 		m.En1Month4Day5Week3Hour5Min6 |= 0x800000
@@ -54,22 +61,27 @@ func (m *Timer) SetEn(en bool) {
 	}
 }
 
+// SetMonth ...
 func (m *Timer) SetMonth(mon time.Month) {
 	m.En1Month4Day5Week3Hour5Min6 = ((int32(mon) << 19) & 0x780000) | (m.En1Month4Day5Week3Hour5Min6 & 0x87ffff)
 }
 
+// SetDay ...
 func (m *Timer) SetDay(d int) {
 	m.En1Month4Day5Week3Hour5Min6 = ((int32(d) << 14) & 0x07c000) | (m.En1Month4Day5Week3Hour5Min6 & 0xf83fff)
 }
 
+// SetWeek ...
 func (m *Timer) SetWeek(w time.Weekday) {
 	m.En1Month4Day5Week3Hour5Min6 = ((int32(w) << 11) & 0x003800) | (m.En1Month4Day5Week3Hour5Min6 & 0xffc7ff)
 }
 
+// SetHour ...
 func (m *Timer) SetHour(h int) {
 	m.En1Month4Day5Week3Hour5Min6 = ((int32(h) << 6) & 0x0007c0) | (m.En1Month4Day5Week3Hour5Min6 & 0xfff83f)
 }
 
+// SetMinute ...
 func (m *Timer) SetMinute(min int) {
 	m.En1Month4Day5Week3Hour5Min6 = (int32(min) & 0x00003f) | (m.En1Month4Day5Week3Hour5Min6 & 0xffffc0)
 }

utils/sql/sqlite.go

@@ -75,6 +75,7 @@ func (db *Sqlite) Create(table string, objptr interface{}) (err error) {
 }
 
 // Insert 插入数据集
+// 如果 PK 存在会覆盖
 // 默认结构体的第一个元素为主键
 // 返回错误
 func (db *Sqlite) Insert(table string, objptr interface{}) error {
@@ -133,7 +134,67 @@ func (db *Sqlite) Insert(table string, objptr interface{}) error {
 	return stmt.Close()
 }
 
-// Find 查询数据库
+// InsertUnique 插入数据集
+// 如果 PK 存在会报错
+// 默认结构体的第一个元素为主键
+// 返回错误
+func (db *Sqlite) InsertUnique(table string, objptr interface{}) error {
+	rows, err := db.DB.Query("SELECT * FROM " + table + " limit 1;")
+	if err != nil {
+		return err
+	}
+	if rows.Err() != nil {
+		return rows.Err()
+	}
+	tags, _ := rows.Columns()
+	rows.Close()
+	var (
+		vals = values(objptr)
+		top  = len(tags) - 1
+		cmd  = []string{}
+	)
+	cmd = append(cmd, "INSERT INTO")
+	cmd = append(cmd, table)
+	for i := range tags {
+		switch i {
+		default:
+			cmd = append(cmd, tags[i])
+			cmd = append(cmd, ",")
+		case 0:
+			cmd = append(cmd, "(")
+			cmd = append(cmd, tags[i])
+			cmd = append(cmd, ",")
+		case top:
+			cmd = append(cmd, tags[i])
+			cmd = append(cmd, ")")
+		}
+	}
+	for i := range tags {
+		switch i {
+		default:
+			cmd = append(cmd, "?")
+			cmd = append(cmd, ",")
+		case 0:
+			cmd = append(cmd, "VALUES (")
+			cmd = append(cmd, "?")
+			cmd = append(cmd, ",")
+		case top:
+			cmd = append(cmd, "?")
+			cmd = append(cmd, ")")
+		}
+	}
+	stmt, err := db.DB.Prepare(strings.Join(cmd, " ") + ";")
+	if err != nil {
+		return err
+	}
+	_, err = stmt.Exec(vals...)
+	if err != nil {
+		return err
+	}
+	return stmt.Close()
+}
+
+// Find 查询数据库，写入最后一条结果到 objptr
 // condition 可为"WHERE id = 0"
 // 默认字段与结构体元素顺序一致
 // 返回错误
@@ -164,6 +225,68 @@ func (db *Sqlite) Find(table string, objptr interface{}, condition string) error
 	return err
 }
 
+// CanFind 查询数据库是否有 condition
+// condition 可为"WHERE id = 0"
+// 默认字段与结构体元素顺序一致
+// 返回错误
+func (db *Sqlite) CanFind(table string, condition string) bool {
+	var cmd = []string{}
+	cmd = append(cmd, "SELECT * FROM")
+	cmd = append(cmd, table)
+	cmd = append(cmd, condition)
+	rows, err := db.DB.Query(strings.Join(cmd, " ") + ";")
+	if err != nil {
+		return false
+	}
+	if rows.Err() != nil {
+		return false
+	}
+	defer rows.Close()
+
+	if !rows.Next() {
+		return false
+	}
+	_ = rows.Close()
+	return true
+}
+
+// FindFor 查询数据库，用函数 f 遍历结果
+// condition 可为"WHERE id = 0"
+// 默认字段与结构体元素顺序一致
+// 返回错误
+func (db *Sqlite) FindFor(table string, objptr interface{}, condition string, f func() error) error {
+	var cmd = []string{}
+	cmd = append(cmd, "SELECT * FROM")
+	cmd = append(cmd, table)
+	cmd = append(cmd, condition)
+	rows, err := db.DB.Query(strings.Join(cmd, " ") + ";")
+	if err != nil {
+		return err
+	}
+	if rows.Err() != nil {
+		return rows.Err()
+	}
+	defer rows.Close()
+
+	if !rows.Next() {
+		return errors.New("sql.FindFor: null result")
+	}
+	err = rows.Scan(addrs(objptr)...)
+	if err == nil {
+		err = f()
+	}
+	for rows.Next() {
+		if err != nil {
+			return err
+		}
+		err = rows.Scan(addrs(objptr)...)
+		if err == nil {
+			err = f()
+		}
+	}
+	return err
+}
+
 // Pick 从 table 随机一行
 func (db *Sqlite) Pick(table string, objptr interface{}) error {
 	return db.Find(table, objptr, "ORDER BY RANDOM() limit 1")