81 lines
2.3 KiB
Text
81 lines
2.3 KiB
Text
-- vim: set noexpandtab :miv --
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-- ┌──────────────────────────┐
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-- │ Generic Helper Functions │
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-- └──────────────────────────┘
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match_all = (str, pat, init=0) ->
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s,e = str\find(pat, init)
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if s then
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return str\sub(s,e), match_all(str, pat, e+1)
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match_lines = (str) -> match_all(str, '[^\n]+')
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-- ┌──────────────────┐
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-- │ Actual Functions │
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-- └──────────────────┘
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tree = (tab, pref='') ->
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print tab.title and tab.title or '┐'
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for idx, element in ipairs tab
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last = idx == #tab
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first = idx == 1
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io.write pref
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io.write last and "└─" or "├─"
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switch type element
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when "table"
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tree element, pref .. (last and ' ' or '│ ')
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else
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print tostring element
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pad = (str='', len) ->
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str..string.rep(" ", len-#str)
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import max from math
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chktbl = (obj) -> error("Object is not a table", 2) if type(obj) ~= 'table'
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to_tab = (obj) -> type(obj)=='table' and obj or {match_lines tostring obj}
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tab = (rows) ->
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-- Get Measurements
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chktbl(rows)
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width = {}
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height = {}
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for row, fields in ipairs rows
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chktbl(fields)
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height[row] = 1
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for col, lines in ipairs fields
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lines = to_tab lines
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height[row] = max(height[row], #lines)
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for line in *lines do
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width[col] = max(width[col] or 1, #line)
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fields[col] = lines
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bars = [string.rep('─', i+2) for i in *width]
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-- Top Line
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print '┌'..table.concat(bars, '┬')..'┐'
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-- Rows
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for row, fields in ipairs rows
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for line=1,height[row]
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io.write '│' -- Outer Left Border
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for col, lines in ipairs fields
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io.write ' '..pad(lines[line], width[col])..' '
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io.write '│' if col < #fields
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print '│' -- Outer Left Border
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print '├'..table.concat(bars, '┼')..'┤' unless row == #rows
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print '└'..table.concat(bars, '┴')..'┘'
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col = (col) -> tab([{elem} for elem in *col])
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row = (row) -> tab{row}
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box = (box) -> tab{{box}}
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line = (len=80) -> print string.rep('─', len)
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line2 = (len=80) ->
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error('Length must be at least 2 characters', 2) if len < 2
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print '┌'..string.rep('─', len-2)..'┐'
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print '└'..string.rep('─', len-2)..'┘'
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{
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:tree, :box, :tab, :col, :row, :line, :line2
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-- Aliases
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table: tab
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}
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