.

vendor/github.com/glebarez/sqlite/.gitignore

@@ -0,0 +1 @@
+.idea/

vendor/github.com/glebarez/sqlite/License

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2013-NOW  Jinzhu <wosmvp@gmail.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

vendor/github.com/glebarez/sqlite/README.md

@@ -0,0 +1,56 @@
+![badge](https://img.shields.io/endpoint?url=https://gist.githubusercontent.com/glebarez/fb4d23f63d866b3e1e58b26d2f5ed01f/raw/badge-gorm-tests.json)
+![badge](https://img.shields.io/endpoint?url=https://gist.githubusercontent.com/glebarez/fb4d23f63d866b3e1e58b26d2f5ed01f/raw/badge-sqlite-version.json)
+<br>[![Hits](https://hits.seeyoufarm.com/api/count/incr/badge.svg?url=https%3A%2F%2Fgithub.com%2Fglebarez%2Fsqlite&count_bg=%2379C83D&title_bg=%23555555&icon=baidu.svg&icon_color=%23E7E7E7&title=hits&edge_flat=false)](https://hits.seeyoufarm.com)
+# Pure-Go SQLite driver for GORM
+Pure-go (without cgo) implementation of SQLite driver for [GORM](https://gorm.io/)<br><br>
+This driver has SQLite embedded, you don't need to install one separately.
+
+# Usage
+
+```go
+import (
+  "github.com/glebarez/sqlite"
+  "gorm.io/gorm"
+)
+
+db, err := gorm.Open(sqlite.Open("sqlite.db"), &gorm.Config{})
+```
+
+### In-memory DB example
+```go
+db, err := gorm.Open(sqlite.Open(":memory:"), &gorm.Config{})
+```
+
+### Foreign-key constraint activation
+Foreign-key constraint is disabled by default in SQLite. To activate it, use connection URL parameter:
+```go
+db, err := gorm.Open(sqlite.Open(":memory:?_pragma=foreign_keys(1)"), &gorm.Config{})
+```
+More info: [https://www.sqlite.org/foreignkeys.html](https://www.sqlite.org/foreignkeys.html)
+
+# FAQ
+## How is this better than standard GORM SQLite driver?
+The [standard GORM driver for SQLite](https://github.com/go-gorm/sqlite) has one major drawback: it is based on a [Go-bindings of SQLite C-source](https://github.com/mattn/go-sqlite3) (this is called [cgo](https://go.dev/blog/cgo)). This fact imposes following restrictions on Go developers:
+- to build and run your code, you will need a C compiler installed on a machine
+- SQLite has many features that need to be enabled at compile time (e.g. [json support](https://www.sqlite.org/json1.html)). If you plan to use those, you will have to include proper build tags for every ```go``` command to work properly (```go run```, ```go test```, etc.).
+- Because of C-compiler requirement, you can't build your Go code inside tiny stripped containers like (golang-alpine)
+- Building on GCP is not possible because Google Cloud Platform does not allow gcc to be executed.
+
+**Instead**, this driver is based on pure-Go implementation of SQLite (https://gitlab.com/cznic/sqlite), which is basically an original SQLite C-source AST, translated into Go! So, you may be sure you're using the original SQLite implementation under the hood.
+
+## Is this tested good ?
+Yes, The CI pipeline of this driver employs [whole test base](https://github.com/go-gorm/gorm/tree/master/tests) of GORM, which includes more than **12k** tests (see badge on the page-top). Testing is run against latest major releases of Go:
+- 1.18
+- 1.19
+
+In following environments:
+- Linux
+- Windows
+- MacOS
+
+## Is it fast?
+Well, it's slower than CGo implementation, but not terribly. See the [bechmark of underlying pure-Go driver vs CGo implementation](https://github.com/glebarez/go-sqlite/tree/master/benchmark).
+
+## Included features
+-  JSON1 (https://www.sqlite.org/json1.html)
+-  Math functions (https://www.sqlite.org/lang_mathfunc.html)

vendor/github.com/glebarez/sqlite/ddlmod.go

@@ -0,0 +1,289 @@
+package sqlite
+
+import (
+	"database/sql"
+	"errors"
+	"fmt"
+	"regexp"
+	"strconv"
+	"strings"
+
+	"gorm.io/gorm/migrator"
+)
+
+var (
+	sqliteSeparator    = "`|\"|'|\t"
+	uniqueRegexp       = regexp.MustCompile(fmt.Sprintf(`^CONSTRAINT [%v]?[\w-]+[%v]? UNIQUE (.*)$`, sqliteSeparator, sqliteSeparator))
+	indexRegexp        = regexp.MustCompile(fmt.Sprintf(`(?is)CREATE(?: UNIQUE)? INDEX [%v]?[\w\d-]+[%v]?(?s:.*?)ON (.*)$`, sqliteSeparator, sqliteSeparator))
+	tableRegexp        = regexp.MustCompile(fmt.Sprintf(`(?is)(CREATE TABLE [%v]?[\w\d-]+[%v]?)(?:\s*\((.*)\))?`, sqliteSeparator, sqliteSeparator))
+	separatorRegexp    = regexp.MustCompile(fmt.Sprintf("[%v]", sqliteSeparator))
+	columnsRegexp      = regexp.MustCompile(fmt.Sprintf(`[(,][%v]?(\w+)[%v]?`, sqliteSeparator, sqliteSeparator))
+	columnRegexp       = regexp.MustCompile(fmt.Sprintf(`^[%v]?([\w\d]+)[%v]?\s+([\w\(\)\d]+)(.*)$`, sqliteSeparator, sqliteSeparator))
+	defaultValueRegexp = regexp.MustCompile(`(?i) DEFAULT \(?(.+)?\)?( |COLLATE|GENERATED|$)`)
+	regRealDataType    = regexp.MustCompile(`[^\d](\d+)[^\d]?`)
+)
+
+func getAllColumns(s string) []string {
+	allMatches := columnsRegexp.FindAllStringSubmatch(s, -1)
+	columns := make([]string, 0, len(allMatches))
+	for _, matches := range allMatches {
+		if len(matches) > 1 {
+			columns = append(columns, matches[1])
+		}
+	}
+	return columns
+}
+
+type ddl struct {
+	head    string
+	fields  []string
+	columns []migrator.ColumnType
+}
+
+func parseDDL(strs ...string) (*ddl, error) {
+	var result ddl
+	for _, str := range strs {
+		if sections := tableRegexp.FindStringSubmatch(str); len(sections) > 0 {
+			var (
+				ddlBody      = sections[2]
+				ddlBodyRunes = []rune(ddlBody)
+				bracketLevel int
+				quote        rune
+				buf          string
+			)
+			ddlBodyRunesLen := len(ddlBodyRunes)
+
+			result.head = sections[1]
+
+			for idx := 0; idx < ddlBodyRunesLen; idx++ {
+				var (
+					next rune = 0
+					c         = ddlBodyRunes[idx]
+				)
+				if idx+1 < ddlBodyRunesLen {
+					next = ddlBodyRunes[idx+1]
+				}
+
+				if sc := string(c); separatorRegexp.MatchString(sc) {
+					if c == next {
+						buf += sc // Skip escaped quote
+						idx++
+					} else if quote > 0 {
+						quote = 0
+					} else {
+						quote = c
+					}
+				} else if quote == 0 {
+					if c == '(' {
+						bracketLevel++
+					} else if c == ')' {
+						bracketLevel--
+					} else if bracketLevel == 0 {
+						if c == ',' {
+							result.fields = append(result.fields, strings.TrimSpace(buf))
+							buf = ""
+							continue
+						}
+					}
+				}
+
+				if bracketLevel < 0 {
+					return nil, errors.New("invalid DDL, unbalanced brackets")
+				}
+
+				buf += string(c)
+			}
+
+			if bracketLevel != 0 {
+				return nil, errors.New("invalid DDL, unbalanced brackets")
+			}
+
+			if buf != "" {
+				result.fields = append(result.fields, strings.TrimSpace(buf))
+			}
+
+			for _, f := range result.fields {
+				fUpper := strings.ToUpper(f)
+				if strings.HasPrefix(fUpper, "CHECK") {
+					continue
+				}
+				if strings.HasPrefix(fUpper, "CONSTRAINT") {
+					matches := uniqueRegexp.FindStringSubmatch(f)
+					if len(matches) > 0 {
+						if columns := getAllColumns(matches[1]); len(columns) == 1 {
+							for idx, column := range result.columns {
+								if column.NameValue.String == columns[0] {
+									column.UniqueValue = sql.NullBool{Bool: true, Valid: true}
+									result.columns[idx] = column
+									break
+								}
+							}
+						}
+					}
+					continue
+				}
+				if strings.HasPrefix(fUpper, "PRIMARY KEY") {
+					for _, name := range getAllColumns(f) {
+						for idx, column := range result.columns {
+							if column.NameValue.String == name {
+								column.PrimaryKeyValue = sql.NullBool{Bool: true, Valid: true}
+								result.columns[idx] = column
+								break
+							}
+						}
+					}
+				} else if matches := columnRegexp.FindStringSubmatch(f); len(matches) > 0 {
+					columnType := migrator.ColumnType{
+						NameValue:         sql.NullString{String: matches[1], Valid: true},
+						DataTypeValue:     sql.NullString{String: matches[2], Valid: true},
+						ColumnTypeValue:   sql.NullString{String: matches[2], Valid: true},
+						PrimaryKeyValue:   sql.NullBool{Valid: true},
+						UniqueValue:       sql.NullBool{Valid: true},
+						NullableValue:     sql.NullBool{Bool: true, Valid: true},
+						DefaultValueValue: sql.NullString{Valid: false},
+					}
+
+					matchUpper := strings.ToUpper(matches[3])
+					if strings.Contains(matchUpper, " NOT NULL") {
+						columnType.NullableValue = sql.NullBool{Bool: false, Valid: true}
+					} else if strings.Contains(matchUpper, " NULL") {
+						columnType.NullableValue = sql.NullBool{Bool: true, Valid: true}
+					}
+					if strings.Contains(matchUpper, " UNIQUE") {
+						columnType.UniqueValue = sql.NullBool{Bool: true, Valid: true}
+					}
+					if strings.Contains(matchUpper, " PRIMARY") {
+						columnType.PrimaryKeyValue = sql.NullBool{Bool: true, Valid: true}
+					}
+					if defaultMatches := defaultValueRegexp.FindStringSubmatch(matches[3]); len(defaultMatches) > 1 {
+						if strings.ToLower(defaultMatches[1]) != "null" {
+							columnType.DefaultValueValue = sql.NullString{String: strings.Trim(defaultMatches[1], `"`), Valid: true}
+						}
+					}
+
+					// data type length
+					matches := regRealDataType.FindAllStringSubmatch(columnType.DataTypeValue.String, -1)
+					if len(matches) == 1 && len(matches[0]) == 2 {
+						size, _ := strconv.Atoi(matches[0][1])
+						columnType.LengthValue = sql.NullInt64{Valid: true, Int64: int64(size)}
+						columnType.DataTypeValue.String = strings.TrimSuffix(columnType.DataTypeValue.String, matches[0][0])
+					}
+
+					result.columns = append(result.columns, columnType)
+				}
+			}
+		} else if matches := indexRegexp.FindStringSubmatch(str); len(matches) > 0 {
+			// don't report Unique by UniqueIndex
+		} else {
+			return nil, errors.New("invalid DDL")
+		}
+	}
+
+	return &result, nil
+}
+
+func (d *ddl) clone() *ddl {
+	copied := new(ddl)
+	*copied = *d
+
+	copied.fields = make([]string, len(d.fields))
+	copy(copied.fields, d.fields)
+	copied.columns = make([]migrator.ColumnType, len(d.columns))
+	copy(copied.columns, d.columns)
+
+	return copied
+}
+
+func (d *ddl) compile() string {
+	if len(d.fields) == 0 {
+		return d.head
+	}
+
+	return fmt.Sprintf("%s (%s)", d.head, strings.Join(d.fields, ","))
+}
+
+func (d *ddl) renameTable(dst, src string) error {
+	tableReg, err := regexp.Compile("\\s*('|`|\")?\\b" + regexp.QuoteMeta(src) + "\\b('|`|\")?\\s*")
+	if err != nil {
+		return err
+	}
+
+	replaced := tableReg.ReplaceAllString(d.head, fmt.Sprintf(" `%s` ", dst))
+	if replaced == d.head {
+		return fmt.Errorf("failed to look up tablename `%s` from DDL head '%s'", src, d.head)
+	}
+
+	d.head = replaced
+	return nil
+}
+
+func (d *ddl) addConstraint(name string, sql string) {
+	reg := regexp.MustCompile("^CONSTRAINT [\"`]?" + regexp.QuoteMeta(name) + "[\"` ]")
+
+	for i := 0; i < len(d.fields); i++ {
+		if reg.MatchString(d.fields[i]) {
+			d.fields[i] = sql
+			return
+		}
+	}
+
+	d.fields = append(d.fields, sql)
+}
+
+func (d *ddl) removeConstraint(name string) bool {
+	reg := regexp.MustCompile("^CONSTRAINT [\"`]?" + regexp.QuoteMeta(name) + "[\"` ]")
+
+	for i := 0; i < len(d.fields); i++ {
+		if reg.MatchString(d.fields[i]) {
+			d.fields = append(d.fields[:i], d.fields[i+1:]...)
+			return true
+		}
+	}
+	return false
+}
+
+func (d *ddl) hasConstraint(name string) bool {
+	reg := regexp.MustCompile("^CONSTRAINT [\"`]?" + regexp.QuoteMeta(name) + "[\"` ]")
+
+	for _, f := range d.fields {
+		if reg.MatchString(f) {
+			return true
+		}
+	}
+	return false
+}
+
+func (d *ddl) getColumns() []string {
+	res := []string{}
+
+	for _, f := range d.fields {
+		fUpper := strings.ToUpper(f)
+		if strings.HasPrefix(fUpper, "PRIMARY KEY") ||
+			strings.HasPrefix(fUpper, "CHECK") ||
+			strings.HasPrefix(fUpper, "CONSTRAINT") ||
+			strings.Contains(fUpper, "GENERATED ALWAYS AS") {
+			continue
+		}
+
+		reg := regexp.MustCompile("^[\"`']?([\\w\\d]+)[\"`']?")
+		match := reg.FindStringSubmatch(f)
+
+		if match != nil {
+			res = append(res, "`"+match[1]+"`")
+		}
+	}
+	return res
+}
+
+func (d *ddl) removeColumn(name string) bool {
+	reg := regexp.MustCompile("^(`|'|\"| )" + regexp.QuoteMeta(name) + "(`|'|\"| ) .*?$")
+
+	for i := 0; i < len(d.fields); i++ {
+		if reg.MatchString(d.fields[i]) {
+			d.fields = append(d.fields[:i], d.fields[i+1:]...)
+			return true
+		}
+	}
+
+	return false
+}

vendor/github.com/glebarez/sqlite/errors.go

@@ -0,0 +1,7 @@
+package sqlite
+
+import "errors"
+
+var (
+	ErrConstraintsNotImplemented = errors.New("constraints not implemented on sqlite, consider using DisableForeignKeyConstraintWhenMigrating, more details https://github.com/go-gorm/gorm/wiki/GORM-V2-Release-Note-Draft#all-new-migrator")
+)

vendor/github.com/glebarez/sqlite/migrator.go

@@ -0,0 +1,430 @@
+package sqlite
+
+import (
+	"database/sql"
+	"fmt"
+	"strings"
+
+	"gorm.io/gorm"
+	"gorm.io/gorm/clause"
+	"gorm.io/gorm/migrator"
+	"gorm.io/gorm/schema"
+)
+
+type Migrator struct {
+	migrator.Migrator
+}
+
+func (m *Migrator) RunWithoutForeignKey(fc func() error) error {
+	var enabled int
+	m.DB.Raw("PRAGMA foreign_keys").Scan(&enabled)
+	if enabled == 1 {
+		m.DB.Exec("PRAGMA foreign_keys = OFF")
+		defer m.DB.Exec("PRAGMA foreign_keys = ON")
+	}
+
+	return fc()
+}
+
+func (m Migrator) HasTable(value interface{}) bool {
+	var count int
+	m.Migrator.RunWithValue(value, func(stmt *gorm.Statement) error {
+		return m.DB.Raw("SELECT count(*) FROM sqlite_master WHERE type='table' AND name=?", stmt.Table).Row().Scan(&count)
+	})
+	return count > 0
+}
+
+func (m Migrator) DropTable(values ...interface{}) error {
+	return m.RunWithoutForeignKey(func() error {
+		values = m.ReorderModels(values, false)
+		tx := m.DB.Session(&gorm.Session{})
+
+		for i := len(values) - 1; i >= 0; i-- {
+			if err := m.RunWithValue(values[i], func(stmt *gorm.Statement) error {
+				return tx.Exec("DROP TABLE IF EXISTS ?", clause.Table{Name: stmt.Table}).Error
+			}); err != nil {
+				return err
+			}
+		}
+
+		return nil
+	})
+}
+
+func (m Migrator) GetTables() (tableList []string, err error) {
+	return tableList, m.DB.Raw("SELECT name FROM sqlite_master where type=?", "table").Scan(&tableList).Error
+}
+
+func (m Migrator) HasColumn(value interface{}, name string) bool {
+	var count int
+	m.Migrator.RunWithValue(value, func(stmt *gorm.Statement) error {
+		if stmt.Schema != nil {
+			if field := stmt.Schema.LookUpField(name); field != nil {
+				name = field.DBName
+			}
+		}
+
+		if name != "" {
+			m.DB.Raw(
+				"SELECT count(*) FROM sqlite_master WHERE type = ? AND tbl_name = ? AND (sql LIKE ? OR sql LIKE ? OR sql LIKE ? OR sql LIKE ? OR sql LIKE ?)",
+				"table", stmt.Table, `%"`+name+`" %`, `%`+name+` %`, "%`"+name+"`%", "%["+name+"]%", "%\t"+name+"\t%",
+			).Row().Scan(&count)
+		}
+		return nil
+	})
+	return count > 0
+}
+
+func (m Migrator) AlterColumn(value interface{}, name string) error {
+	return m.RunWithoutForeignKey(func() error {
+		return m.recreateTable(value, nil, func(ddl *ddl, stmt *gorm.Statement) (*ddl, []interface{}, error) {
+			if field := stmt.Schema.LookUpField(name); field != nil {
+				var sqlArgs []interface{}
+				for i, f := range ddl.fields {
+					if matches := columnRegexp.FindStringSubmatch(f); len(matches) > 1 && matches[1] == field.DBName {
+						ddl.fields[i] = fmt.Sprintf("`%v` ?", field.DBName)
+						sqlArgs = []interface{}{m.FullDataTypeOf(field)}
+						// table created by old version might look like `CREATE TABLE ? (? varchar(10) UNIQUE)`.
+						// FullDataTypeOf doesn't contain UNIQUE, so we need to add unique constraint.
+						if strings.Contains(strings.ToUpper(matches[3]), " UNIQUE") {
+							uniName := m.DB.NamingStrategy.UniqueName(stmt.Table, field.DBName)
+							uni, _ := m.GuessConstraintInterfaceAndTable(stmt, uniName)
+							if uni != nil {
+								uniSQL, uniArgs := uni.Build()
+								ddl.addConstraint(uniName, uniSQL)
+								sqlArgs = append(sqlArgs, uniArgs...)
+							}
+						}
+						break
+					}
+				}
+				return ddl, sqlArgs, nil
+			}
+			return nil, nil, fmt.Errorf("failed to alter field with name %v", name)
+		})
+	})
+}
+
+// ColumnTypes return columnTypes []gorm.ColumnType and execErr error
+func (m Migrator) ColumnTypes(value interface{}) ([]gorm.ColumnType, error) {
+	columnTypes := make([]gorm.ColumnType, 0)
+	execErr := m.RunWithValue(value, func(stmt *gorm.Statement) (err error) {
+		var (
+			sqls   []string
+			sqlDDL *ddl
+		)
+
+		if err := m.DB.Raw("SELECT sql FROM sqlite_master WHERE type IN ? AND tbl_name = ? AND sql IS NOT NULL order by type = ? desc", []string{"table", "index"}, stmt.Table, "table").Scan(&sqls).Error; err != nil {
+			return err
+		}
+
+		if sqlDDL, err = parseDDL(sqls...); err != nil {
+			return err
+		}
+
+		rows, err := m.DB.Session(&gorm.Session{}).Table(stmt.Table).Limit(1).Rows()
+		if err != nil {
+			return err
+		}
+		defer func() {
+			err = rows.Close()
+		}()
+
+		var rawColumnTypes []*sql.ColumnType
+		rawColumnTypes, err = rows.ColumnTypes()
+		if err != nil {
+			return err
+		}
+
+		for _, c := range rawColumnTypes {
+			columnType := migrator.ColumnType{SQLColumnType: c}
+			for _, column := range sqlDDL.columns {
+				if column.NameValue.String == c.Name() {
+					column.SQLColumnType = c
+					columnType = column
+					break
+				}
+			}
+			columnTypes = append(columnTypes, columnType)
+		}
+
+		return err
+	})
+
+	return columnTypes, execErr
+}
+
+func (m Migrator) DropColumn(value interface{}, name string) error {
+	return m.recreateTable(value, nil, func(ddl *ddl, stmt *gorm.Statement) (*ddl, []interface{}, error) {
+		if field := stmt.Schema.LookUpField(name); field != nil {
+			name = field.DBName
+		}
+
+		ddl.removeColumn(name)
+		return ddl, nil, nil
+	})
+}
+
+func (m Migrator) CreateConstraint(value interface{}, name string) error {
+	return m.RunWithValue(value, func(stmt *gorm.Statement) error {
+		constraint, table := m.GuessConstraintInterfaceAndTable(stmt, name)
+
+		return m.recreateTable(value, &table,
+			func(ddl *ddl, stmt *gorm.Statement) (*ddl, []interface{}, error) {
+				var (
+					constraintName   string
+					constraintSql    string
+					constraintValues []interface{}
+				)
+
+				if constraint != nil {
+					constraintName = constraint.GetName()
+					constraintSql, constraintValues = constraint.Build()
+				} else {
+					return nil, nil, nil
+				}
+
+				ddl.addConstraint(constraintName, constraintSql)
+				return ddl, constraintValues, nil
+			})
+	})
+}
+
+func (m Migrator) DropConstraint(value interface{}, name string) error {
+	return m.RunWithValue(value, func(stmt *gorm.Statement) error {
+		constraint, table := m.GuessConstraintInterfaceAndTable(stmt, name)
+		if constraint != nil {
+			name = constraint.GetName()
+		}
+
+		return m.recreateTable(value, &table,
+			func(ddl *ddl, stmt *gorm.Statement) (*ddl, []interface{}, error) {
+				ddl.removeConstraint(name)
+				return ddl, nil, nil
+			})
+	})
+}
+
+func (m Migrator) HasConstraint(value interface{}, name string) bool {
+	var count int64
+	m.RunWithValue(value, func(stmt *gorm.Statement) error {
+		constraint, table := m.GuessConstraintInterfaceAndTable(stmt, name)
+		if constraint != nil {
+			name = constraint.GetName()
+		}
+
+		m.DB.Raw(
+			"SELECT count(*) FROM sqlite_master WHERE type = ? AND tbl_name = ? AND (sql LIKE ? OR sql LIKE ? OR sql LIKE ? OR sql LIKE ? OR sql LIKE ?)",
+			"table", table, `%CONSTRAINT "`+name+`" %`, `%CONSTRAINT `+name+` %`, "%CONSTRAINT `"+name+"`%", "%CONSTRAINT ["+name+"]%", "%CONSTRAINT \t"+name+"\t%",
+		).Row().Scan(&count)
+
+		return nil
+	})
+
+	return count > 0
+}
+
+func (m Migrator) CurrentDatabase() (name string) {
+	var null interface{}
+	m.DB.Raw("PRAGMA database_list").Row().Scan(&null, &name, &null)
+	return
+}
+
+func (m Migrator) BuildIndexOptions(opts []schema.IndexOption, stmt *gorm.Statement) (results []interface{}) {
+	for _, opt := range opts {
+		str := stmt.Quote(opt.DBName)
+		if opt.Expression != "" {
+			str = opt.Expression
+		}
+
+		if opt.Collate != "" {
+			str += " COLLATE " + opt.Collate
+		}
+
+		if opt.Sort != "" {
+			str += " " + opt.Sort
+		}
+		results = append(results, clause.Expr{SQL: str})
+	}
+	return
+}
+
+func (m Migrator) CreateIndex(value interface{}, name string) error {
+	return m.RunWithValue(value, func(stmt *gorm.Statement) error {
+		if stmt.Schema != nil {
+			if idx := stmt.Schema.LookIndex(name); idx != nil {
+				opts := m.BuildIndexOptions(idx.Fields, stmt)
+				values := []interface{}{clause.Column{Name: idx.Name}, clause.Table{Name: stmt.Table}, opts}
+
+				createIndexSQL := "CREATE "
+				if idx.Class != "" {
+					createIndexSQL += idx.Class + " "
+				}
+				createIndexSQL += "INDEX ?"
+
+				if idx.Type != "" {
+					createIndexSQL += " USING " + idx.Type
+				}
+				createIndexSQL += " ON ??"
+
+				if idx.Where != "" {
+					createIndexSQL += " WHERE " + idx.Where
+				}
+
+				return m.DB.Exec(createIndexSQL, values...).Error
+			}
+		}
+		return fmt.Errorf("failed to create index with name %v", name)
+	})
+}
+
+func (m Migrator) HasIndex(value interface{}, name string) bool {
+	var count int
+	m.RunWithValue(value, func(stmt *gorm.Statement) error {
+		if stmt.Schema != nil {
+			if idx := stmt.Schema.LookIndex(name); idx != nil {
+				name = idx.Name
+			}
+		}
+
+		if name != "" {
+			m.DB.Raw(
+				"SELECT count(*) FROM sqlite_master WHERE type = ? AND tbl_name = ? AND name = ?", "index", stmt.Table, name,
+			).Row().Scan(&count)
+		}
+		return nil
+	})
+	return count > 0
+}
+
+func (m Migrator) RenameIndex(value interface{}, oldName, newName string) error {
+	return m.RunWithValue(value, func(stmt *gorm.Statement) error {
+		var sql string
+		m.DB.Raw("SELECT sql FROM sqlite_master WHERE type = ? AND tbl_name = ? AND name = ?", "index", stmt.Table, oldName).Row().Scan(&sql)
+		if sql != "" {
+			if err := m.DropIndex(value, oldName); err != nil {
+				return err
+			}
+			return m.DB.Exec(strings.Replace(sql, oldName, newName, 1)).Error
+		}
+		return fmt.Errorf("failed to find index with name %v", oldName)
+	})
+}
+
+func (m Migrator) DropIndex(value interface{}, name string) error {
+	return m.RunWithValue(value, func(stmt *gorm.Statement) error {
+		if stmt.Schema != nil {
+			if idx := stmt.Schema.LookIndex(name); idx != nil {
+				name = idx.Name
+			}
+		}
+
+		return m.DB.Exec("DROP INDEX ?", clause.Column{Name: name}).Error
+	})
+}
+
+type Index struct {
+	Seq     int
+	Name    string
+	Unique  bool
+	Origin  string
+	Partial bool
+}
+
+// GetIndexes return Indexes []gorm.Index and execErr error,
+// See the [doc]
+//
+// [doc]: https://www.sqlite.org/pragma.html#pragma_index_list
+func (m Migrator) GetIndexes(value interface{}) ([]gorm.Index, error) {
+	indexes := make([]gorm.Index, 0)
+	err := m.RunWithValue(value, func(stmt *gorm.Statement) error {
+		rst := make([]*Index, 0)
+		if err := m.DB.Debug().Raw("SELECT * FROM PRAGMA_index_list(?)", stmt.Table).Scan(&rst).Error; err != nil { // alias `PRAGMA index_list(?)`
+			return err
+		}
+		for _, index := range rst {
+			if index.Origin == "u" { // skip the index was created by a UNIQUE constraint
+				continue
+			}
+			var columns []string
+			if err := m.DB.Raw("SELECT name FROM PRAGMA_index_info(?)", index.Name).Scan(&columns).Error; err != nil { // alias `PRAGMA index_info(?)`
+				return err
+			}
+			indexes = append(indexes, &migrator.Index{
+				TableName:       stmt.Table,
+				NameValue:       index.Name,
+				ColumnList:      columns,
+				PrimaryKeyValue: sql.NullBool{Bool: index.Origin == "pk", Valid: true}, // The exceptions are INTEGER PRIMARY KEY
+				UniqueValue:     sql.NullBool{Bool: index.Unique, Valid: true},
+			})
+		}
+		return nil
+	})
+	return indexes, err
+}
+
+func (m Migrator) getRawDDL(table string) (string, error) {
+	var createSQL string
+	m.DB.Raw("SELECT sql FROM sqlite_master WHERE type = ? AND tbl_name = ? AND name = ?", "table", table, table).Row().Scan(&createSQL)
+
+	if m.DB.Error != nil {
+		return "", m.DB.Error
+	}
+	return createSQL, nil
+}
+
+func (m Migrator) recreateTable(
+	value interface{}, tablePtr *string,
+	getCreateSQL func(ddl *ddl, stmt *gorm.Statement) (sql *ddl, sqlArgs []interface{}, err error),
+) error {
+	return m.RunWithValue(value, func(stmt *gorm.Statement) error {
+		table := stmt.Table
+		if tablePtr != nil {
+			table = *tablePtr
+		}
+
+		rawDDL, err := m.getRawDDL(table)
+		if err != nil {
+			return err
+		}
+
+		originDDL, err := parseDDL(rawDDL)
+		if err != nil {
+			return err
+		}
+
+		createDDL, sqlArgs, err := getCreateSQL(originDDL.clone(), stmt)
+		if err != nil {
+			return err
+		}
+		if createDDL == nil {
+			return nil
+		}
+
+		newTableName := table + "__temp"
+		if err := createDDL.renameTable(newTableName, table); err != nil {
+			return err
+		}
+
+		columns := createDDL.getColumns()
+		createSQL := createDDL.compile()
+
+		return m.DB.Transaction(func(tx *gorm.DB) error {
+			if err := tx.Exec(createSQL, sqlArgs...).Error; err != nil {
+				return err
+			}
+
+			queries := []string{
+				fmt.Sprintf("INSERT INTO `%v`(%v) SELECT %v FROM `%v`", newTableName, strings.Join(columns, ","), strings.Join(columns, ","), table),
+				fmt.Sprintf("DROP TABLE `%v`", table),
+				fmt.Sprintf("ALTER TABLE `%v` RENAME TO `%v`", newTableName, table),
+			}
+			for _, query := range queries {
+				if err := tx.Exec(query).Error; err != nil {
+					return err
+				}
+			}
+			return nil
+		})
+	})
+}

vendor/github.com/glebarez/sqlite/sqlite.go

@@ -0,0 +1,275 @@
+package sqlite
+
+import (
+	"context"
+	"database/sql"
+	"strconv"
+
+	"gorm.io/gorm/callbacks"
+
+	gosqlite "github.com/glebarez/go-sqlite"
+	sqlite3 "modernc.org/sqlite/lib"
+
+	"gorm.io/gorm"
+	"gorm.io/gorm/clause"
+	"gorm.io/gorm/logger"
+	"gorm.io/gorm/migrator"
+	"gorm.io/gorm/schema"
+)
+
+// DriverName is the default driver name for SQLite.
+const DriverName = "sqlite"
+
+type Dialector struct {
+	DriverName string
+	DSN        string
+	Conn       gorm.ConnPool
+}
+
+func Open(dsn string) gorm.Dialector {
+	return &Dialector{DSN: dsn}
+}
+
+func (dialector Dialector) Name() string {
+	return "sqlite"
+}
+
+func (dialector Dialector) Initialize(db *gorm.DB) (err error) {
+	if dialector.DriverName == "" {
+		dialector.DriverName = DriverName
+	}
+
+	if dialector.Conn != nil {
+		db.ConnPool = dialector.Conn
+	} else {
+		conn, err := sql.Open(dialector.DriverName, dialector.DSN)
+		if err != nil {
+			return err
+		}
+		db.ConnPool = conn
+	}
+
+	var version string
+	if err := db.ConnPool.QueryRowContext(context.Background(), "select sqlite_version()").Scan(&version); err != nil {
+		return err
+	}
+	// https://www.sqlite.org/releaselog/3_35_0.html
+	if compareVersion(version, "3.35.0") >= 0 {
+		callbacks.RegisterDefaultCallbacks(db, &callbacks.Config{
+			CreateClauses:        []string{"INSERT", "VALUES", "ON CONFLICT", "RETURNING"},
+			UpdateClauses:        []string{"UPDATE", "SET", "FROM", "WHERE", "RETURNING"},
+			DeleteClauses:        []string{"DELETE", "FROM", "WHERE", "RETURNING"},
+			LastInsertIDReversed: true,
+		})
+	} else {
+		callbacks.RegisterDefaultCallbacks(db, &callbacks.Config{
+			LastInsertIDReversed: true,
+		})
+	}
+
+	for k, v := range dialector.ClauseBuilders() {
+		db.ClauseBuilders[k] = v
+	}
+	return
+}
+
+func (dialector Dialector) ClauseBuilders() map[string]clause.ClauseBuilder {
+	return map[string]clause.ClauseBuilder{
+		"INSERT": func(c clause.Clause, builder clause.Builder) {
+			if insert, ok := c.Expression.(clause.Insert); ok {
+				if stmt, ok := builder.(*gorm.Statement); ok {
+					stmt.WriteString("INSERT ")
+					if insert.Modifier != "" {
+						stmt.WriteString(insert.Modifier)
+						stmt.WriteByte(' ')
+					}
+
+					stmt.WriteString("INTO ")
+					if insert.Table.Name == "" {
+						stmt.WriteQuoted(stmt.Table)
+					} else {
+						stmt.WriteQuoted(insert.Table)
+					}
+					return
+				}
+			}
+
+			c.Build(builder)
+		},
+		"LIMIT": func(c clause.Clause, builder clause.Builder) {
+			if limit, ok := c.Expression.(clause.Limit); ok {
+				var lmt = -1
+				if limit.Limit != nil && *limit.Limit >= 0 {
+					lmt = *limit.Limit
+				}
+				if lmt >= 0 || limit.Offset > 0 {
+					builder.WriteString("LIMIT ")
+					builder.WriteString(strconv.Itoa(lmt))
+				}
+				if limit.Offset > 0 {
+					builder.WriteString(" OFFSET ")
+					builder.WriteString(strconv.Itoa(limit.Offset))
+				}
+			}
+		},
+		"FOR": func(c clause.Clause, builder clause.Builder) {
+			if _, ok := c.Expression.(clause.Locking); ok {
+				// SQLite3 does not support row-level locking.
+				return
+			}
+			c.Build(builder)
+		},
+	}
+}
+
+func (dialector Dialector) DefaultValueOf(field *schema.Field) clause.Expression {
+	if field.AutoIncrement {
+		return clause.Expr{SQL: "NULL"}
+	}
+
+	// doesn't work, will raise error
+	return clause.Expr{SQL: "DEFAULT"}
+}
+
+func (dialector Dialector) Migrator(db *gorm.DB) gorm.Migrator {
+	return Migrator{migrator.Migrator{Config: migrator.Config{
+		DB:                          db,
+		Dialector:                   dialector,
+		CreateIndexAfterCreateTable: true,
+	}}}
+}
+
+func (dialector Dialector) BindVarTo(writer clause.Writer, stmt *gorm.Statement, v interface{}) {
+	writer.WriteByte('?')
+}
+
+func (dialector Dialector) QuoteTo(writer clause.Writer, str string) {
+	var (
+		underQuoted, selfQuoted bool
+		continuousBacktick      int8
+		shiftDelimiter          int8
+	)
+
+	for _, v := range []byte(str) {
+		switch v {
+		case '`':
+			continuousBacktick++
+			if continuousBacktick == 2 {
+				writer.WriteString("``")
+				continuousBacktick = 0
+			}
+		case '.':
+			if continuousBacktick > 0 || !selfQuoted {
+				shiftDelimiter = 0
+				underQuoted = false
+				continuousBacktick = 0
+				writer.WriteString("`")
+			}
+			writer.WriteByte(v)
+			continue
+		default:
+			if shiftDelimiter-continuousBacktick <= 0 && !underQuoted {
+				writer.WriteString("`")
+				underQuoted = true
+				if selfQuoted = continuousBacktick > 0; selfQuoted {
+					continuousBacktick -= 1
+				}
+			}
+
+			for ; continuousBacktick > 0; continuousBacktick -= 1 {
+				writer.WriteString("``")
+			}
+
+			writer.WriteByte(v)
+		}
+		shiftDelimiter++
+	}
+
+	if continuousBacktick > 0 && !selfQuoted {
+		writer.WriteString("``")
+	}
+	writer.WriteString("`")
+}
+
+func (dialector Dialector) Explain(sql string, vars ...interface{}) string {
+	return logger.ExplainSQL(sql, nil, `"`, vars...)
+}
+
+func (dialector Dialector) DataTypeOf(field *schema.Field) string {
+	switch field.DataType {
+	case schema.Bool:
+		return "numeric"
+	case schema.Int, schema.Uint:
+		if field.AutoIncrement {
+			// doesn't check `PrimaryKey`, to keep backward compatibility
+			// https://www.sqlite.org/autoinc.html
+			return "integer PRIMARY KEY AUTOINCREMENT"
+		} else {
+			return "integer"
+		}
+	case schema.Float:
+		return "real"
+	case schema.String:
+		return "text"
+	case schema.Time:
+		// Distinguish between schema.Time and tag time
+		if val, ok := field.TagSettings["TYPE"]; ok {
+			return val
+		} else {
+			return "datetime"
+		}
+	case schema.Bytes:
+		return "blob"
+	}
+
+	return string(field.DataType)
+}
+
+func (dialectopr Dialector) SavePoint(tx *gorm.DB, name string) error {
+	tx.Exec("SAVEPOINT " + name)
+	return nil
+}
+
+func (dialectopr Dialector) RollbackTo(tx *gorm.DB, name string) error {
+	tx.Exec("ROLLBACK TO SAVEPOINT " + name)
+	return nil
+}
+
+func (dialector Dialector) Translate(err error) error {
+	switch terr := err.(type) {
+	case *gosqlite.Error:
+		switch terr.Code() {
+		case sqlite3.SQLITE_CONSTRAINT_UNIQUE:
+			return gorm.ErrDuplicatedKey
+		case sqlite3.SQLITE_CONSTRAINT_PRIMARYKEY:
+			return gorm.ErrDuplicatedKey
+		case sqlite3.SQLITE_CONSTRAINT_FOREIGNKEY:
+			return gorm.ErrForeignKeyViolated
+		}
+	}
+	return err
+}
+
+func compareVersion(version1, version2 string) int {
+	n, m := len(version1), len(version2)
+	i, j := 0, 0
+	for i < n || j < m {
+		x := 0
+		for ; i < n && version1[i] != '.'; i++ {
+			x = x*10 + int(version1[i]-'0')
+		}
+		i++
+		y := 0
+		for ; j < m && version2[j] != '.'; j++ {
+			y = y*10 + int(version2[j]-'0')
+		}
+		j++
+		if x > y {
+			return 1
+		}
+		if x < y {
+			return -1
+		}
+	}
+	return 0
+}