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85 lines
1.6 KiB
85 lines
1.6 KiB
package mysql
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import (
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"database/sql/driver"
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"strings"
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"time"
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)
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// Quote MySQL identifiers and literals.
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type Quote struct{}
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func (q Quote) ID(name string) string {
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end := strings.IndexRune(name, 0)
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if end > -1 {
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name = name[:end]
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}
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return "`" + strings.ReplaceAll(name, "`", "``") + "`"
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}
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func (q Quote) Value(v interface{}) string {
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switch v := v.(type) {
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default:
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panic("unsupported value")
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case string:
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// TODO: Need to check on connection for NO_BACKSLASH_ESCAPES
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rv := []rune(v)
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buf := make([]rune, len(rv)*2)
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pos := 0
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for i := 0; i < len(rv); i++ {
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c := rv[i]
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switch c {
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case '\x00':
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buf[pos] = '\\'
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buf[pos+1] = '0'
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pos += 2
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case '\n':
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buf[pos] = '\\'
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buf[pos+1] = 'n'
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pos += 2
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case '\r':
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buf[pos] = '\\'
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buf[pos+1] = 'r'
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pos += 2
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case '\x1a':
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buf[pos] = '\\'
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buf[pos+1] = 'Z'
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pos += 2
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case '\'':
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buf[pos] = '\\'
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buf[pos+1] = '\''
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pos += 2
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case '"':
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buf[pos] = '\\'
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buf[pos+1] = '"'
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pos += 2
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case '\\':
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buf[pos] = '\\'
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buf[pos+1] = '\\'
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pos += 2
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default:
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buf[pos] = c
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pos++
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}
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}
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return "'" + string(buf[:pos]) + "'"
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}
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}
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// ValueConvert converts values to MySQL literals.
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type ValueConvert struct{}
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func (c ValueConvert) ConvertValue(v interface{}) (driver.Value, error) {
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v, err := driver.DefaultParameterConverter.ConvertValue(v)
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if err != nil {
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return nil, err
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}
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switch v := v.(type) {
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default:
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return v, nil
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case time.Time:
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return v.Truncate(time.Microsecond).Format("2006-01-02 15:04:05.999999"), nil
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}
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}
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