stringutil

Documentation

Index

• Variables
• func CompileLike2Regexp(str string) string
• func CompilePattern(pattern string, escape byte) (patChars, patTypes []byte)
• func Copy(src string) string
• func DoMatch(str string, patChars, patTypes []byte) bool
• func IsExactMatch(patTypes []byte) bool
• func MemoizeStr(l func() string) fmt.Stringer
• func RandString(n int) string
• func RemoveSensitiveInfo(sqlStr string) string
• func Unquote(s string) (t string, err error)
• func UnquoteChar(s string, quote byte) (value []byte, tail string, err error)
• type StringerFunc
  • func (l StringerFunc) String() string
• type StringerStr
  • func (i StringerStr) String() string

Variables

var ErrSyntax = errors.New("invalid syntax")

ErrSyntax indicates that a value does not have the right syntax for the target type.

Functions

func CompileLike2Regexp

func CompileLike2Regexp(str string) string

CompileLike2Regexp convert a like `lhs` to a regular expression

func CompilePattern

func CompilePattern(pattern string, escape byte) (patChars, patTypes []byte)

CompilePattern handles escapes and wild cards convert pattern characters and pattern types.

func Copy

func Copy(src string) string

Copy deep copies a string.

func DoMatch

func DoMatch(str string, patChars, patTypes []byte) bool

DoMatch matches the string with patChars and patTypes. The algorithm has linear time complexity. https://research.swtch.com/glob

func IsExactMatch

func IsExactMatch(patTypes []byte) bool

IsExactMatch return true if no wildcard character

func MemoizeStr

func MemoizeStr(l func() string) fmt.Stringer

MemoizeStr returns memoized version of stringFunc.

func RandString

func RandString(n int) string

func RemoveSensitiveInfo

func RemoveSensitiveInfo(sqlStr string) string

func Unquote

func Unquote(s string) (t string, err error)

Unquote interprets s as a single-quoted, double-quoted, or backquoted Go string literal, returning the string value that s quotes. For example: test=`"\"\n"` (hex: 22 5c 22 5c 6e 22) should be converted to `"\n` (hex: 22 0a).

func UnquoteChar

func UnquoteChar(s string, quote byte) (value []byte, tail string, err error)

UnquoteChar decodes the first character or byte in the escaped string or character literal represented by the string s. It returns four values:

1) value, the decoded Unicode code point or byte value; 2) multibyte, a boolean indicating whether the decoded character requires a multibyte UTF-8 representation; 3) tail, the remainder of the string after the character; and 4) an error that will be nil if the character is syntactically valid.

The second argument, quote, specifies the type of literal being parsed and therefore which escaped quote character is permitted. If set to a single quote, it permits the sequence \' and disallows unescaped '. If set to a double quote, it permits \" and disallows unescaped ". If set to zero, it does not permit either escape and allows both quote characters to appear unescaped. Different with strconv.UnquoteChar, it permits unnecessary backslash.

Types

type StringerFunc

type StringerFunc func() string

StringerFunc defines string func implement fmt.Stringer.

func (StringerFunc) String

func (l StringerFunc) String() string

String implements fmt.Stringer

type StringerStr

type StringerStr string

StringerStr defines a alias to normal string. implement fmt.Stringer

func (StringerStr) String

func (i StringerStr) String() string

String implements fmt.Stringer