82 lines
1.8 KiB
Lua
82 lines
1.8 KiB
Lua
curses = require 'curses'
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local stdscr = curses.initscr()
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curses.echo(false) -- unclear why implicit echo can't handle newlines, regardless of stdscr:nl()
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stdscr:clear()
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stdscr:scrollok(true)
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local function gather_results(success, ...)
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local n = select('#', ...)
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return success, { n = n, ... }
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end
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local function readline()
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local result = ''
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while true do
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local x = stdscr:getch()
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stdscr:addch(x)
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local c = string.char(x)
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result = result .. c
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if c == '\n' then break end
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end
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return result
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end
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local new_expr = true
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local buf = ''
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while true do
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if new_expr then
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stdscr:addstr('> ')
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else
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stdscr:addstr('>> ')
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end
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buf = buf .. readline()
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local f, err = load('return '..buf, 'REPL')
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if f then
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buf = ''
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new_expr = true
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local success, results = gather_results(xpcall(f, function(...) return debug.traceback() end))
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if success then
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for i, result in ipairs(results) do
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if i > 1 then
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stdscr:addch('\t')
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end
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stdscr:addstr(tostring(result))
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end
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else
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stdscr:addstr(tostring(result[1]))
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end
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stdscr:addch('\n')
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else
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local f, err = load(buf, 'REPL')
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if f then
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buf = ''
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new_expr = true
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local success, results = gather_results(xpcall(f, function(...) return debug.traceback() end))
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if success then
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for _, result in ipairs(results) do
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if i > 1 then
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stdscr:addch('\t')
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end
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stdscr:addstr(tostring(result))
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end
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else
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stdscr:addstr(tostring(result[1]))
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end
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stdscr:addch('\n')
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else
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stdscr:addstr(err..'\n')
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if string.match(err, "'<eof>'$") or string.match(err, "<eof>$") then
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buf = buf .. '\n'
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new_expr = false
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else
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print(err)
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buf = ''
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new_expr = true
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end
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end
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end
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end
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curses.endwin()
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