115 lines
2.2 KiB
Lua
115 lines
2.2 KiB
Lua
local unionfs = {}
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local function normalise(path)
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return table.concat(fs.segments(path),"/")
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end
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function unionfs.create(...)
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local paths,fids,fc = {...}, {}, 0
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for k,v in pairs(paths) do
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paths[k] = "/"..normalise(v)
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end
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local proxy = {}
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local function realpath(path)
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path = path or ""
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for k,v in pairs(paths) do
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if fs.exists(v.."/"..path) then
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return v.."/"..path
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end
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end
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return paths[1].."/"..path
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end
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function proxy.setLabel()
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return false
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end
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function proxy.spaceUsed()
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return fs.spaceUsed(paths[1])
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end
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function proxy.spaceTotal()
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return fs.spaceTotal(paths[1])
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end
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function proxy.isReadOnly()
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return fs.isReadOnly(paths[1])
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end
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function proxy.isDirectory(path)
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return fs.isDirectory(realpath(path))
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end
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function proxy.lastModified(path)
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return fs.lastModified(realpath(path))
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end
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function proxy.getLabel()
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return fs.getLabel(paths[1])
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end
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function proxy.exists(path)
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return fs.exists(realpath(path))
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end
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function proxy.remove(path)
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return fs.remove(realpath(path))
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end
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function proxy.size(path)
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return fs.size(realpath(path))
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end
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function proxy.list(path)
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local nt,rt = {},{}
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if #fs.segments(path) < 1 then
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for k,v in pairs(paths) do
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for l,m in ipairs(fs.list(v.."/"..path)) do
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nt[m] = true
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end
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end
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for k,v in pairs(nt) do
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rt[#rt+1] = k
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end
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table.sort(rt)
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return rt
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else
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return fs.list(realpath(path))
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end
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end
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function proxy.open(path,mode)
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local fh, r = fs.open(realpath(path),mode)
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if not fh then return fh, r end
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fids[fc] = fh
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fc = fc + 1
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return fc - 1
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end
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function proxy.close(fid)
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if not fids[fid] then
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return false, "file not open"
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end
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local rfh = fids[fid]
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fids[fid] = nil
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return rfh:close()
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end
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function proxy.write(fid,d)
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if not fids[fid] then
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return false, "file not open"
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end
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return fids[fid]:write(d)
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end
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function proxy.read(fid,d)
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if not fids[fid] then
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return false, "file not open"
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end
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local rb = fids[fid]:read(d)
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if rb == "" then rb = nil end
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return rb
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end
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function proxy.seek(fid,d)
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if not fids[fid] then
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return false, "file not open"
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end
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return fids[fid]:seek(d)
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end
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return proxy
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end
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return unionfs
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