rtf-parser/rtf-document.js

This is a general RTF parser. It takes a text stream and produces a document object representing the parsed document. In and of itself, this isn't super useful but it's the building block for other tools to convert RTF into other formats.

'use strict'
const RTFGroup = require('./rtf-group.js')
const RTFParagraph = require('./rtf-paragraph.js')

class RTFDocument extends RTFGroup {
  constructor () {
    super()
    this.charset = 'ASCII'
    this.ignorable = false
    this.marginLeft = 1800
    this.marginRight = 1800
    this.marginBottom = 1440
    this.marginTop = 1440
    this.style = {
      font: 0,
      fontSize: 24,
      bold: false,
      italic: false,
      underline: false,
      strikethrough: false,
      foreground: null,
      background: null,
      firstLineIndent: 0,
      indent: 0,
      align: 'left',
      valign: 'normal'
    }
  }
  get (name) {
    return this[name]
  }
  getFont (num) {
    return this.fonts[num]
  }
  getColor (num) {
    return this.colors[num]
  }
  getStyle (name) {
    if (!name) return this.style
    return this.style[name]
  }
  addContent (node) {
    if (node instanceof RTFParagraph) {
      while (this.content.length && !(this.content[this.content.length - 1] instanceof RTFParagraph)) {
        node.content.unshift(this.content.pop())
      }
      super.addContent(node)
      if (node.content.length) {
        const initialStyle = node.content[0].style
        const style = {}
        style.font = this.getFont(initialStyle.font)
        style.foreground = this.getColor(initialStyle.foreground)
        style.background = this.getColor(initialStyle.background)
        for (let prop of Object.keys(initialStyle)) {
          if (initialStyle[prop] == null) continue
          let match = true
          for (let span of node.content) {
            if (initialStyle[prop] !== span.style[prop]) {
              match = false
              break
            }
          }
          if (match) style[prop] = initialStyle[prop]
        }
        node.style = style
      }
    } else {
      super.addContent(node)
    }
  }
}

module.exports = RTFDocument