draft.go

// Markup (based on Draft.js: http://facebook.github.io/draft-js)
package draft

import (
	"encoding/json"
	"fmt"
)

type Markup struct {
	Blocks    []Block           `json:"blocks"`
	EntityMap map[string]Entity `json:"entityMap"`
}

type Block struct {
	Key          string        `json:"key"`
	Text         string        `json:"text"`
	Type         string        `json:"type"`
	Depth        int           `json:"depth"`
	StyleRanges  []StyleRange  `json:"inlineStyleRanges"`
	EntityRanges []EntityRange `json:"entityRanges"`
}

type Entity struct {
	Type       string      `json:"type"`
	Mutability string      `json:"mutability"`
	Data       interface{} `json:"data"`
}

type EntityRange struct {
	Key    int    `json:"key"`
	Offset int    `json:"offset"`
	Length int    `json:"length"`
	Style  string `json:"style"`
}

type StyleRange struct {
	Offset int    `json:"offset"`
	Length int    `json:"length"`
	Style  string `json:"style"`
}

func New(raw string) (*Markup, error) {
	if len(raw) == 0 {
		return nil, nil
	}
	var m Markup
	if err := json.Unmarshal([]byte(raw), &m); err != nil {
		return nil, fmt.Errorf("Invalid markup: %s", err)
	}
	return &m, nil
}