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36 lines
972 B
Lua
36 lines
972 B
Lua
--[[
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This is a registry for document providers
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]]--
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local DocumentRegistry = {
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providers = { }
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}
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function DocumentRegistry:addProvider(extension, mimetype, provider)
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table.insert(self.providers, { extension = extension, mimetype = mimetype, provider = provider })
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end
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function DocumentRegistry:getProvider(file)
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-- TODO: some implementation based on mime types?
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local extension = string.lower(string.match(file, ".+%.([^.]+)") or "")
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for _, provider in ipairs(self.providers) do
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if extension == provider.extension then
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return provider.provider
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end
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end
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end
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function DocumentRegistry:openDocument(file)
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local provider = self:getProvider(file)
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if provider ~= nil then
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return provider:new{file = file}
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end
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end
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-- load implementations:
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require("document/pdfdocument"):register(DocumentRegistry)
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require("document/djvudocument"):register(DocumentRegistry)
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require("document/credocument"):register(DocumentRegistry)
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return DocumentRegistry
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