30 lines
601 B
Lua
30 lines
601 B
Lua
-- see if the file exists
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local function file_exists(file)
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local f = io.open(file, "rb")
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if f then
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f:close()
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end
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return f ~= nil
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end
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-- get all lines from a file, returns an empty
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-- list/table if the file does not exist
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local function lines_from(file)
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if not file_exists(file) then
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return {}
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end
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local lines = {}
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for line in io.lines(file) do
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lines[#lines + 1] = line
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end
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return lines
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end
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-- tests the functions above
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local file = "test.lua"
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local lines = lines_from(file)
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-- print all line numbers and their contents
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for k, v in pairs(lines) do
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print("line[" .. k .. "]", v)
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end
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