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97 lines
1.9 KiB
Lua
97 lines
1.9 KiB
Lua
-- Copyright 2016 Thierry Fournier
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function color(index, str)
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return "\x1b[" .. index .. "m" .. str .. "\x1b[00m"
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end
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function nocolor(index, str)
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return str
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end
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function sp(count)
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local spaces = ""
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while count > 0 do
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spaces = spaces .. " "
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count = count - 1
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end
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return spaces
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end
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function escape(str)
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local s = ""
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for i = 1, #str do
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local c = str:sub(i,i)
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local ascii = string.byte(c, 1)
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if ascii > 126 or ascii < 20 then
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s = s .. string.format("\\x%02x", ascii)
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else
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s = s .. c
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end
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end
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return s
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end
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function print_rr(p, indent, c, wr, hist)
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local i = 0
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local nl = ""
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if type(p) == "table" then
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wr(c("33", "(table)") .. " " .. c("36", tostring(p)) .. " [")
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for idx, value in ipairs(hist) do
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if value == p then
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wr(" " .. c("35", "/* recursion */") .. " ]")
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return
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end
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end
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hist[indent + 1] = p
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mt = getmetatable(p)
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if mt ~= nil then
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wr("\n" .. sp(indent+1) .. c("31", "METATABLE") .. ": ")
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print_rr(mt, indent+1, c, wr, hist)
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end
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for k,v in pairs(p) do
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if i > 0 then
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nl = "\n"
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else
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wr("\n")
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end
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wr(nl .. sp(indent+1))
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if type(k) == "number" then
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wr(c("32", tostring(k)))
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else
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wr("\"" .. c("32", escape(tostring(k))) .. "\"")
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end
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wr(": ")
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print_rr(v, indent+1, c, wr, hist)
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i = i + 1
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end
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if i == 0 then
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wr(" " .. c("35", "/* empty */") .. " ]")
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else
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wr("\n" .. sp(indent) .. "]")
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end
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hist[indent + 1] = nil
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elseif type(p) == "string" then
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wr(c("33", "(string)") .. " \"" .. c("36", escape(p)) .. "\"")
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else
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wr(c("33", "(" .. type(p) .. ")") .. " " .. c("36", tostring(p)))
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end
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end
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function print_r(p, col, wr)
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if col == nil then col = true end
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if wr == nil then wr = function(msg) io.stdout:write(msg) end end
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local hist = {}
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if col == true then
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print_rr(p, 0, color, wr, hist)
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else
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print_rr(p, 0, nocolor, wr, hist)
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end
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wr("\n")
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end
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