63 lines
2.0 KiB
Lua
63 lines
2.0 KiB
Lua
-- /bin/ls - Lists files in a directory.
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--
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-- Iterate over the 'children' map exposed via C++.
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local function format_permissions(perms)
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local rwx = { "-", "-", "-", "-", "-", "-","-", "-", "-" }
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if(perms & 0x100) ~= 0 then rwx[1] = "r" end -- Owner read.
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if(perms & 0x080) ~= 0 then rwx[2] = "w" end -- Owner write.
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if(perms & 0x040) ~= 0 then rwx[3] = "x" end -- Owner execute.
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if(perms & 0x020) ~= 0 then rwx[4] = "r" end -- Group read.
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if(perms & 0x010) ~= 0 then rwx[5] = "w" end -- Group write.
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if(perms & 0x008) ~= 0 then rwx[6] = "x" end -- Group execute.
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if(perms & 0x004) ~= 0 then rwx[7] = "r" end -- Other read.
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if(perms & 0x002) ~= 0 then rwx[8] = "w" end -- Other write.
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if(perms & 0x001) ~= 0 then rwx[9] = "x" end -- Other execute.
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return table.concat(rwx)
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end
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local function get_file_size(node)
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if node.type == 0 then -- FILE_NODE.
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return #node.content
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else
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return 0 -- Dirs don't have content size in this context.
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end
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end
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local function ls_long_format(dir)
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local output = {}
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for name, node in pairs(dir.children) do
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local line_type = (node.type == 1) and "d" or "-"
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local perms = format_permissions(node.permissions)
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local owner = node.owner_id
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local group = node.group_id
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local size = get_file_size(node)
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table.insert(output, string.format("%s%s %d %d %5d %s", line_type, perms, owner, group, size, name))
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end
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table.sort(output)
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return table.concat(output, "\n")
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end
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local function ls_short_format(dir)
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local output = {}
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for name, node in pairs(dir.children) do
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local display_name = name
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if node.type == 1 then -- DIR_NODE
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display_name = display_name .. "/"
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elseif node.type == 2 then --EXEC_NODE
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display_name = display_name .. "*"
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end
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table.insert(output, display_name)
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end
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table.sort(output)
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return table.concat(output, "\t") -- Tab separated short format.
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end
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local current_dir = bettola.get_current_dir(context);
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if arg[1] == "-l" then
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return ls_long_format(current_dir)
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else
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return ls_short_format(current_dir)
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end
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