52 lines
2.2 KiB
Plaintext
52 lines
2.2 KiB
Plaintext
#
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This file contains some definitions of text escape sequences, including ANSI console
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color codes.
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use "core/metaprogramming.nom"
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# Text functions
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action [%texts joined with %glue]
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lua> ".."
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local text_bits = {}
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for i,bit in ipairs(\%texts) do text_bits[i] = stringify(bit) end
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return table.concat(text_bits, \%glue)
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parse [joined %texts, %texts joined] as: %texts joined with ""
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compile [capitalized %text, %text capitalized] to
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Lua value "((\(%text as lua expr)):gsub('%l', string.upper, 1))"
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compile [%text with %sub instead of %patt, %text s/%patt/%sub] to
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Lua value "((\(%text as lua expr)):gsub(\(%patt as lua expr), \(%sub as lua expr)))"
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# Text literals
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lua> ".."
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do
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local escapes = {
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nl="\\\\n", newline="\\\\n", tab="\\\\t", bell="\\\\a", cr="\\\\r", ["carriage return"]="\\\\r",
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backspace="\\\\b", ["form feed"]="\\\\f", formfeed="\\\\f", ["vertical tab"]="\\\\v",
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};
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for name, e in pairs(escapes) do
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local lua = "'"..e.."'";
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nomsu:define_compile_action(name, function(tree) return Lua.Value(nil, lua); end);
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end
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local colors = {
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["reset color"]="\\\\27[0m", bright="\\\\27[1m", dim="\\\\27[2m", underscore="\\\\27[4m",
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blink="\\\\27[5m", inverse="\\\\27[7m", hidden="\\\\27[8m",
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black="\\\\27[30m", red="\\\\27[31m", green="\\\\27[32m", yellow="\\\\27[33m", blue="\\\\27[34m",
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magenta="\\\\27[35m", cyan="\\\\27[36m", white="\\\\27[37m",
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["on black"]="\\\\27[40m", ["on red"]="\\\\27[41m", ["on green"]="\\\\27[42m", ["on yellow"]="\\\\27[43m",
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["on blue"]="\\\\27[44m", ["on magenta"]="\\\\27[45m", ["on cyan"]="\\\\27[46m", ["on white"]="\\\\27[47m",
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};
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for name, c in pairs(colors) do
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local color = "'"..c.."'";
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local reset = "'"..colors["reset color"].."'";
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nomsu:define_compile_action(name, function(tree) return Lua.Value(nil, color); end);
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nomsu:define_compile_action(name.." %", function(\%)
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return Lua.Value(nil, color, "..", \(% as lua), "..", reset);
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end);
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end
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end
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