nwm310

查表法

::0 ~ 255字
setlocal enableDelayedExpansion

set "s=your string"

set a=□0□1□2□3□4□5□6□7□8□9□A□B□C□D□E□F
set "$=!%a:□=!!a:□=%!!s!!s!"


set /a len=0x!$:~-512,2!
echo %len%
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:: 0 ~ 1279字   (8191 /6 = 1365) 
setlocal enableDelayedExpansion

set "s=your string"

set a=□0□1□2□3□4□5□6□7□8□9□A□B□C□D□E□F
set d=!%a:□=!!a:□=□%!


set b=□0□1□2□3□4
set "$=!%b:□=!!d:□=%!!s!!s!!s!"


:: (0x4FF + 1 ) *3 = 1280 * 3 = 3840
set /a len=0x!$:~-3840,3!
echo %len%
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