mirror of
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106 lines
3.1 KiB
Go
106 lines
3.1 KiB
Go
package db
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import (
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"context"
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"fmt"
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"strings"
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"github.com/gogf/gf/v2/container/gmap"
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"github.com/gogf/gf/v2/database/gdb"
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)
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// func getSQLiteSchemaByCli(tableName string, db gdb.DB) (string, error) {
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// dbConf := db.GetConfig()
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// cmd := exec.Command("sqlite3", dbConf.Name, fmt.Sprintf(".schema %s", tableName))
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// glog.Info(context.TODO(), "sqlite3", dbConf.Name, fmt.Sprintf("'.schema %s'", tableName))
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// output, err := cmd.CombinedOutput()
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// if err != nil {
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// return "", err
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// }
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// return strings.TrimSpace(string(output)), nil
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// }
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func getSQLiteSchemaBySql(ctx context.Context, tableName string, db gdb.DB) (string, error) {
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schemaRes, err := db.GetValue(ctx, fmt.Sprintf(`SELECT sql FROM sqlite_master WHERE type='table' AND name='%s';`, tableName))
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if err != nil {
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return "", err
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}
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return schemaRes.String(), nil
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}
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func getSQliteTableComments(createTableSql string) (tableComment, tableName string) {
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// 按照换行符分割文本
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lines := strings.Split(createTableSql, "\n")
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// 循环输出每一行
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for _, line := range lines {
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// 检查 createTableSql 是否包含 comment
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if strings.Contains(line, "--") {
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if strings.Contains(line, "CREATE TABLE") {
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tableName = getLastWord(strings.Split(line, "(")[0])
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tableComment = strings.Split(line, "--")[1]
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}
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}
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}
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return
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}
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func getSQliteFieldsComments(createTableSql string) (fieldCommentMap gmap.Map, tableComment, tableName string) {
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// 按照换行符分割文本
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lines := strings.Split(createTableSql, "\n")
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// 循环输出每一行
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for _, line := range lines {
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// 检查 createTableSql 是否包含 comment
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if strings.Contains(line, "--") {
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if strings.Contains(line, "CREATE TABLE") {
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tableName = getLastWord(strings.Split(line, "(")[0])
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tableComment = strings.Split(line, "--")[1]
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} else {
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firstWord := getFirstWord(line)
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lastWord := getLastWord(line)
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fieldCommentMap.Set(firstWord, lastWord)
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}
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}
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}
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return
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}
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func transSqliteTablesComment(ctx context.Context, tableNames []string, db gdb.DB) (tables []*TableComment, err error) {
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schemaStr := ""
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eleIgnore := "sqlite_sequence"
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for _, v := range tableNames {
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if v != eleIgnore {
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schemaStr, err = getSQLiteSchemaBySql(ctx, v, db)
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if err != nil {
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return
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}
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comment, _ := getSQliteTableComments(schemaStr)
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tables = append(tables, &TableComment{
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Name: v,
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Comment: comment,
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})
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}
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}
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return
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}
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func fixSqliteFieldsComment(ctx context.Context, tableName string, db gdb.DB, fields map[string]*gdb.TableField) (map[string]*gdb.TableField, error) {
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// 记录: db.DoSelect 无法执行 .开头的命令
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// schemaRes, err := db.DoSelect(ctx, dbConf.Link, fmt.Sprintf(`.schema %s`, d.QuoteWord(table)))
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// 记录: 查询 sqlite_master 不响应任何结果
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// s, err := db.Query(ctx, `select * from sqlite_master WHERE name="%s";`, tableName)
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// schemaStr, err := getSQLiteSchemaBySql(tableName, db)
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schemaStr, err := getSQLiteSchemaBySql(ctx, tableName, db)
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if err != nil {
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return fields, err
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}
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comments, _, _ := getSQliteFieldsComments(schemaStr)
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for i := range fields {
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if comments.Contains(i) {
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fields[i].Comment = comments.Get(i).(string)
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}
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}
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return fields, nil
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}
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