format

Documentation

Index

• Constants
• func OutputFormat(s string) string
• type Formatter
  • func FlatFormatter(w io.Writer) Formatter
  • func IndentFormatter(w io.Writer, indent string) Formatter
• type RestoreCtx
  • func NewRestoreCtx(flags RestoreFlags, in io.Writer) *RestoreCtx
  • func (ctx *RestoreCtx) WriteKeyWord(keyWord string)
  • func (ctx *RestoreCtx) WriteName(name string)
  • func (ctx *RestoreCtx) WritePlain(plainText string)
  • func (ctx *RestoreCtx) WritePlainf(format string, a ...interface{})
  • func (ctx *RestoreCtx) WriteString(str string)
  • func (ctx *RestoreCtx) WriteWithSpecialComments(featureID string, fn func() error) error
• type RestoreFlags
  • func (rf RestoreFlags) HasKeyWordLowercaseFlag() bool
  • func (rf RestoreFlags) HasKeyWordUppercaseFlag() bool
  • func (rf RestoreFlags) HasNameBackQuotesFlag() bool
  • func (rf RestoreFlags) HasNameDoubleQuotesFlag() bool
  • func (rf RestoreFlags) HasNameLowercaseFlag() bool
  • func (rf RestoreFlags) HasNameUppercaseFlag() bool
  • func (rf RestoreFlags) HasRestoreBracketAroundBinaryOperation() bool
  • func (rf RestoreFlags) HasSpacesAroundBinaryOperationFlag() bool
  • func (rf RestoreFlags) HasStringDoubleQuotesFlag() bool
  • func (rf RestoreFlags) HasStringEscapeBackslashFlag() bool
  • func (rf RestoreFlags) HasStringSingleQuotesFlag() bool
  • func (rf RestoreFlags) HasStringWithoutCharset() bool
  • func (rf RestoreFlags) HasStringWithoutDefaultCharset() bool
  • func (rf RestoreFlags) HasTiDBSpecialCommentFlag() bool

Constants

const (
	DefaultRestoreFlags = RestoreStringSingleQuotes | RestoreKeyWordUppercase | RestoreNameBackQuotes
)

Functions

func OutputFormat

func OutputFormat(s string) string

OutputFormat output escape character with backslash.

Types

type Formatter

type Formatter interface {
	io.Writer
	Format(format string, args ...interface{}) (n int, errno error)
}

Formatter is an io.Writer extended formatter by a fmt.Printf like function Format.

func FlatFormatter

func FlatFormatter(w io.Writer) Formatter

FlatFormatter returns a newly created Formatter with the same functionality as the one returned by IndentFormatter except it allows a newline in the 'format' string argument of Format to pass through if the indent level is current zero.

If the indent level is non-zero then such new lines are changed to a space character. There is no indent string, the %i and %u format verbs are used solely to determine the indent level.

The FlatFormatter is intended for flattening of normally nested structure textual representation to a one top level structure per line form.

FlatFormatter(os.Stdout, " ").Format("abc%d%%e%i\nx\ny\n%uz\n", 3)

output in the form of a Go quoted string literal:

"abc3%%e x y z\n"

func IndentFormatter

func IndentFormatter(w io.Writer, indent string) Formatter

IndentFormatter returns a new Formatter which interprets %i and %u in the Format() formats string as indent and unindent commands. The commands can nest. The Formatter writes to io.Writer 'w' and inserts one 'indent' string per current indent level value. Behaviour of commands reaching negative indent levels is undefined.

IndentFormatter(os.Stdout, "\t").Format("abc%d%%e%i\nx\ny\n%uz\n", 3)

output:

abc3%e
    x
    y
z

The Go quoted string literal form of the above is:

"abc%%e\n\tx\n\tx\nz\n"

The commands can be scattered between separate invocations of Format(), i.e. the formatter keeps track of the indent level and knows if it is positioned on start of a line and should emit indentation(s). The same output as above can be produced by e.g.:

f := IndentFormatter(os.Stdout, " ")
f.Format("abc%d%%e%i\nx\n", 3)
f.Format("y\n%uz\n")

type RestoreCtx

type RestoreCtx struct {
	Flags     RestoreFlags
	In        io.Writer
	DefaultDB string
	CTENames  []string
}

RestoreCtx is `Restore` context to hold flags and writer.

func NewRestoreCtx

func NewRestoreCtx(flags RestoreFlags, in io.Writer) *RestoreCtx

NewRestoreCtx returns a new `RestoreCtx`.

func (*RestoreCtx) WriteKeyWord

func (ctx *RestoreCtx) WriteKeyWord(keyWord string)

WriteKeyWord writes the `keyWord` into writer. `keyWord` will be converted format(uppercase and lowercase for now) according to `RestoreFlags`.

func (*RestoreCtx) WriteName

func (ctx *RestoreCtx) WriteName(name string)

WriteName writes the name into writer `name` maybe wrapped in quotes and escaped according to RestoreFlags.

func (*RestoreCtx) WritePlain

func (ctx *RestoreCtx) WritePlain(plainText string)

WritePlain writes the plain text into writer without any handling.

func (*RestoreCtx) WritePlainf

func (ctx *RestoreCtx) WritePlainf(format string, a ...interface{})

WritePlainf write the plain text into writer without any handling.

func (*RestoreCtx) WriteString

func (ctx *RestoreCtx) WriteString(str string)

WriteString writes the string into writer `str` may be wrapped in quotes and escaped according to RestoreFlags.

func (*RestoreCtx) WriteWithSpecialComments

func (ctx *RestoreCtx) WriteWithSpecialComments(featureID string, fn func() error) error

type RestoreFlags

type RestoreFlags uint64

RestoreFlag mark the Restore format

const (
	RestoreStringSingleQuotes RestoreFlags = 1 << iota
	RestoreStringDoubleQuotes
	RestoreStringEscapeBackslash

	RestoreKeyWordUppercase
	RestoreKeyWordLowercase

	RestoreNameUppercase
	RestoreNameLowercase
	RestoreNameDoubleQuotes
	RestoreNameBackQuotes

	RestoreSpacesAroundBinaryOperation
	RestoreBracketAroundBinaryOperation

	RestoreStringWithoutCharset
	RestoreStringWithoutDefaultCharset

	RestoreTiDBSpecialComment
)

Mutually exclusive group of `RestoreFlags`: [RestoreStringSingleQuotes, RestoreStringDoubleQuotes] [RestoreKeyWordUppercase, RestoreKeyWordLowercase] [RestoreNameUppercase, RestoreNameLowercase] [RestoreNameDoubleQuotes, RestoreNameBackQuotes] The flag with the left position in each group has a higher priority.

func (RestoreFlags) HasKeyWordLowercaseFlag

func (rf RestoreFlags) HasKeyWordLowercaseFlag() bool

HasKeyWordLowercaseFlag returns a boolean indicating whether `rf` has `RestoreKeyWordLowercase` flag.

func (RestoreFlags) HasKeyWordUppercaseFlag

func (rf RestoreFlags) HasKeyWordUppercaseFlag() bool

HasKeyWordUppercaseFlag returns a boolean indicating whether `rf` has `RestoreKeyWordUppercase` flag.

func (RestoreFlags) HasNameBackQuotesFlag

func (rf RestoreFlags) HasNameBackQuotesFlag() bool

HasNameBackQuotesFlag returns a boolean indicating whether `rf` has `RestoreNameBackQuotes` flag.

func (RestoreFlags) HasNameDoubleQuotesFlag

func (rf RestoreFlags) HasNameDoubleQuotesFlag() bool

HasNameDoubleQuotesFlag returns a boolean indicating whether `rf` has `RestoreNameDoubleQuotes` flag.

func (RestoreFlags) HasNameLowercaseFlag

func (rf RestoreFlags) HasNameLowercaseFlag() bool

HasNameLowercaseFlag returns a boolean indicating whether `rf` has `RestoreNameLowercase` flag.

func (RestoreFlags) HasNameUppercaseFlag

func (rf RestoreFlags) HasNameUppercaseFlag() bool

HasNameUppercaseFlag returns a boolean indicating whether `rf` has `RestoreNameUppercase` flag.

func (RestoreFlags) HasRestoreBracketAroundBinaryOperation

func (rf RestoreFlags) HasRestoreBracketAroundBinaryOperation() bool

func (RestoreFlags) HasSpacesAroundBinaryOperationFlag

func (rf RestoreFlags) HasSpacesAroundBinaryOperationFlag() bool

HasSpacesAroundBinaryOperationFlag returns a boolean indicating whether `rf` has `RestoreSpacesAroundBinaryOperation` flag.

func (RestoreFlags) HasStringDoubleQuotesFlag

func (rf RestoreFlags) HasStringDoubleQuotesFlag() bool

HasStringDoubleQuotesFlag returns a boolean indicating whether `rf` has `RestoreStringDoubleQuotes` flag.

func (RestoreFlags) HasStringEscapeBackslashFlag

func (rf RestoreFlags) HasStringEscapeBackslashFlag() bool

HasStringEscapeBackslashFlag returns a boolean indicating whether `rf` has `RestoreStringEscapeBackslash` flag.

func (RestoreFlags) HasStringSingleQuotesFlag

func (rf RestoreFlags) HasStringSingleQuotesFlag() bool

HasStringSingleQuotesFlag returns a boolean indicating when `rf` has `RestoreStringSingleQuotes` flag.

func (RestoreFlags) HasStringWithoutCharset

func (rf RestoreFlags) HasStringWithoutCharset() bool

func (RestoreFlags) HasStringWithoutDefaultCharset

func (rf RestoreFlags) HasStringWithoutDefaultCharset() bool

func (RestoreFlags) HasTiDBSpecialCommentFlag

func (rf RestoreFlags) HasTiDBSpecialCommentFlag() bool