reformat.lua

-- Open the input file
local input_file = io.open("input.txt", "r")

-- Read the contents of the file
local input_text = input_file:read("*all")

-- Close the input file
input_file:close()

-- Set the maximum number of characters per line
local max_chars_per_line = 50

-- Split the input text into lines
local lines = {}
for line in input_text:gmatch("[^\r\n]+") do
    table.insert(lines, line)
end

-- Format each line to the maximum number of characters per line
for i, line in ipairs(lines) do
    local formatted_line = ""
    local line_length = 0
    for word in line:gmatch("%S+") do
        if line_length + #word > max_chars_per_line then
            formatted_line = formatted_line .. "\n" .. word .. " "
            line_length = #word + 1
        else
            formatted_line = formatted_line .. word .. " "
            line_length = line_length + #word + 1
        end
    end
    lines[i] = formatted_line
end

-- Join the formatted lines back into a single string
local output_text = table.concat(lines, "\n")

-- Open the output file
local output_file = io.open("output.txt", "w")

-- Write the formatted text to the output file
output_file:write(output_text)

-- Close the output file
output_file:close()