65 lines
1.7 KiB
Lua
65 lines
1.7 KiB
Lua
iofs = {}
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iofs.files = {}
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iofs.fds = {}
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iofs.nextfd = 0
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iofs.component = {}
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local function rfalse()
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return false
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end
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function iofs.component.getLabel()
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return "iofs"
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end
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iofs.component.spaceUsed, iofs.component.spaceTotal, iofs.component.isReadOnly, iofs.component.isDirectory,iofs.component.size, iofs.component.setLabel = function() return computer.totalMemory()-computer.freeMemory() end, computer.totalMemory, rfalse, rfalse, rfalse, rfalse
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function iofs.component.exists(fname)
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return iofs.files[fname] ~= nil
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end
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function iofs.component.list()
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local t = {}
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for k,v in pairs(iofs.files) do
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t[#t+1] = k
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end
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return t
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end
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function iofs.component.open(fname, mode)
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fname=fname:gsub("/","")
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if iofs.files[fname] then
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local r,w,c,s = iofs.files[fname](mode)
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iofs.fds[iofs.nextfd] = {["read"]=r or rfalse,["write"]=w or rfalse,["seek"]=s or rfalse,["close"]=c or rfalse}
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iofs.nextfd = iofs.nextfd + 1
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return iofs.nextfd - 1
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end
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return false
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end
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function iofs.component.read(fd,count)
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if iofs.fds[fd] then
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return iofs.fds[fd].read(count)
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end
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end
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function iofs.component.write(fd,data)
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if iofs.fds[fd] then
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return iofs.fds[fd].write(data)
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end
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end
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function iofs.component.close(fd)
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if iofs.fds[fd] then
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iofs.fds[fd].close()
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end
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iofs.fds[fd] = nil
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end
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function iofs.component.seek(fd,...)
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if iofs.fds[fd] then
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return iofs.fds[fd].seek(...)
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end
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end
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function iofs.register(fname,fopen) -- Register a new iofs node with the name *fname* that will run the function *fopen* when opened. This function should return a function for read, a function for write, and a function for close, in that order.
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iofs.files[fname] = fopen
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end
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fs.mounts.iofs = iofs.component
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