format

package
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 Go to latest Published: Mar 20, 2024 License: Apache-2.0 Imports: 4 Imported by: 0

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Constants

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const (
	// DefaultRestoreFlags is the default value of RestoreFlags.
	DefaultRestoreFlags = RestoreStringSingleQuotes | RestoreKeyWordUppercase | RestoreNameBackQuotes
)

Variables

This section is empty.

Functions

func OutputFormat 

func OutputFormat(s string) string

OutputFormat output escape character with backslash.

Types

type CTERestorer 

type CTERestorer struct {
	CTENames []string
}

CTERestorer is used by WithClause related nodes restore.

func (*CTERestorer) IsCTETableName 

func (c *CTERestorer) IsCTETableName(nameL string) bool

IsCTETableName returns true if the given tableName comes from CTE.

func (*CTERestorer) RecordCTEName 

func (c *CTERestorer) RecordCTEName(nameL string)

RecordCTEName records the CTE name.

func (*CTERestorer) RestoreCTEFunc 

func (c *CTERestorer) RestoreCTEFunc() func()

RestoreCTEFunc is used to restore CTE.

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        RestoreWriter
	DefaultDB string
	CTERestorer
}

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

func NewRestoreCtx 

func NewRestoreCtx(flags RestoreFlags, in RestoreWriter) *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

WriteWithSpecialComments writes a string with a special comment wrapped.

type RestoreFlags 

type RestoreFlags uint64

RestoreFlags mark the Restore format 

const (
	RestoreStringSingleQuotes RestoreFlags = 1 << iota
	RestoreStringDoubleQuotes
	RestoreStringEscapeBackslash

	RestoreKeyWordUppercase
	RestoreKeyWordLowercase

	RestoreNameUppercase
	RestoreNameLowercase
	RestoreNameDoubleQuotes
	RestoreNameBackQuotes

	RestoreSpacesAroundBinaryOperation
	RestoreBracketAroundBinaryOperation

	RestoreStringWithoutCharset
	RestoreStringWithoutDefaultCharset

	RestoreTiDBSpecialComment
	SkipPlacementRuleForRestore
	RestoreWithTTLEnableOff
	RestoreWithoutSchemaName
	RestoreWithoutTableName
	RestoreForNonPrepPlanCache
)

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

HasRestoreBracketAroundBinaryOperation returns a boolean indicating whether `rf` has `RestoreBracketAroundBinaryOperation` flag.

func (RestoreFlags) HasRestoreForNonPrepPlanCache 

func (rf RestoreFlags) HasRestoreForNonPrepPlanCache() bool

HasRestoreForNonPrepPlanCache returns a boolean indicating whether `rf` has `RestoreForNonPrepPlanCache` flag.

func (RestoreFlags) HasRestoreWithTTLEnableOff 

func (rf RestoreFlags) HasRestoreWithTTLEnableOff() bool

HasRestoreWithTTLEnableOff returns a boolean indicating whether to force set TTL_ENABLE='OFF' when restoring a TTL table

func (RestoreFlags) HasSkipPlacementRuleForRestoreFlag 

func (rf RestoreFlags) HasSkipPlacementRuleForRestoreFlag() bool

HasSkipPlacementRuleForRestoreFlag returns a boolean indicating whether `rf` has `SkipPlacementRuleForRestore` flag.

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

HasStringWithoutCharset returns a boolean indicating whether `rf` has `RestoreStringWithoutCharset` flag.

func (RestoreFlags) HasStringWithoutDefaultCharset 

func (rf RestoreFlags) HasStringWithoutDefaultCharset() bool

HasStringWithoutDefaultCharset returns a boolean indicating whether `rf` has `RestoreStringWithoutDefaultCharset` flag.

func (RestoreFlags) HasTiDBSpecialCommentFlag 

func (rf RestoreFlags) HasTiDBSpecialCommentFlag() bool

HasTiDBSpecialCommentFlag returns a boolean indicating whether `rf` has `RestoreTiDBSpecialComment` flag.

func (RestoreFlags) HasWithoutSchemaNameFlag 

func (rf RestoreFlags) HasWithoutSchemaNameFlag() bool

HasWithoutSchemaNameFlag returns a boolean indicating when `rf` has `RestoreWithoutSchemaName` flag.

func (RestoreFlags) HasWithoutTableNameFlag 

func (rf RestoreFlags) HasWithoutTableNameFlag() bool

HasWithoutTableNameFlag returns a boolean indicating when `rf` has `RestoreWithoutTableName` flag.

type RestoreWriter 

type RestoreWriter interface {
	io.Writer
	io.StringWriter
}

RestoreWriter is the interface for `Restore` to write.

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