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34 lines
809 B
CoffeeScript
34 lines
809 B
CoffeeScript
###
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PDFImage - embeds images in PDF documents
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By Devon Govett
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###
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fs = require 'fs'
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Data = require './data'
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JPEG = require './image/jpeg'
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PNG = require './image/png'
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class PDFImage
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@open: (src, label) ->
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if Buffer.isBuffer(src)
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data = src
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else if src instanceof ArrayBuffer
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data = new Buffer(new Uint8Array(src))
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else
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if match = /^data:.+;base64,(.*)$/.exec(src)
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data = new Buffer(match[1], 'base64')
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else
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data = fs.readFileSync src
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return unless data
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if data[0] is 0xff and data[1] is 0xd8
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return new JPEG(data, label)
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else if data[0] is 0x89 and data.toString('ascii', 1, 4) is 'PNG'
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return new PNG(data, label)
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else
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throw new Error 'Unknown image format.'
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module.exports = PDFImage |