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util/bit53.lua @ 13184:d16845afb3e2
util.pposix: Add remove_blocks() for deleting parts of files
Allows implementing e.g. a FIFO
Will probably only work on some Linux file systems like ext4.
author | Kim Alvefur <zash@zash.se> |
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date | Wed, 07 Jun 2023 05:07:03 +0200 |
parent | 12365:af02b033bd7f |
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-- Only the operators needed by net.websocket.frames are provided at this point return { band = function (a, b, ...) local ret = a & b; if ... then for i = 1, select("#", ...) do ret = ret & (select(i, ...)); end end return ret; end; bor = function (a, b, ...) local ret = a | b; if ... then for i = 1, select("#", ...) do ret = ret | (select(i, ...)); end end return ret; end; bxor = function (a, b, ...) local ret = a ~ b; if ... then for i = 1, select("#", ...) do ret = ret ~ (select(i, ...)); end end return ret; end; rshift = function (a, n) return a >> n end; lshift = function (a, n) return a << n end; };