mirror of https://github.com/kepler155c/opus
79 lines
1.1 KiB
Lua
79 lines
1.1 KiB
Lua
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local synchronized = require('sync')
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local urlfs = { }
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function urlfs.mount(dir, url)
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if not url then
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error('URL is required')
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end
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return {
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url = url,
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}
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end
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function urlfs.delete(node, dir)
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fs.unmount(dir)
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end
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function urlfs.exists()
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return true
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end
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function urlfs.getSize(node)
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return node.size or 0
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end
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function urlfs.isReadOnly()
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return true
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end
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function urlfs.isDir()
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return false
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end
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function urlfs.getDrive()
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return 'url'
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end
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function urlfs.open(node, fn, fl)
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if fl ~= 'r' then
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error('Unsupported mode')
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end
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local c = node.cache
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if not c then
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synchronized(node.url, function()
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c = Util.download(node.url)
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end)
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if c and #c > 0 then
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node.cache = c
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node.size = #c
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end
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end
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if not c or #c == 0 then
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return
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end
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local ctr = 0
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local lines
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return {
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readLine = function()
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if not lines then
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lines = Util.split(c)
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end
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ctr = ctr + 1
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return lines[ctr]
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end,
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readAll = function()
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return c
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end,
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close = function()
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lines = nil
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end,
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}
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end
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return urlfs
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