pattern

package
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 Go to latest Published: Feb 21, 2026 License: GPL-3.0 Imports: 5 Imported by: 0

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type Spec 

type Spec struct {
	// A sequence of Token structs that indicates the new row layout.
	Tokens []Token `json:"tokens"`

	// CSV separator character.
	Comma string `json:"comma"`
}

Spec is derived from a user-provided string pattern. It contains information about the structure of the output CSV file.

func ParsePattern 

func ParsePattern(pattern string) (Spec, error)

ParsePattern converts user input into a Specification struct.

type Token 

type Token struct {
	// Indicates the value type stored in a Token struct.
	Type TokenType `json:"type"`

	// Column number. Content of the indicated column will be substituted
	// in place of this token during compilation process.
	Column int `json:"column"`

	// Arbitrary text that will be inserted as is during compilation process.
	Text string `json:"text"`
}

Token is an union-like type. It stores either CSV column number or an arbitrary text to be inserted.

func NewColumnToken 

func NewColumnToken(columnNumber int) Token

Creates a new Token containing specified column number.

func NewTextToken 

func NewTextToken(text string) Token

Creates a new Token containing specified text.

type TokenType 

type TokenType byte

Indicates a type of value stored in a Token struct. 

const (
	// Indicates that Token stores Column.
	TT_COLUMN TokenType = 'd'

	// Indicates that Token stores Text.
	TT_TEXT TokenType = 's'
)

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