[文本处理] 批处理怎样提高字串替换速度？

Topgunguy

各位版友大家好，我想请教有关替换字串的问题，
以下这段程式码可以替换字串

@ECHO OFF
(for /f "tokens=1* delims=:" %%i in ('findstr /n .* %1') do (
set "line=%%j"
setlocal enabledelayedexpansion
if "!line!"=="" (echo.!line!) else (
set "line=!line:H1=H2!"
echo.!line!
endlocal
)))>back.txt
move back.txt %1
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只是这样一行一行地echo，档案超过50kb，就会开始lag，档案越大，lag越久。

如果要处理的替换只有前二十行和後十行，
请问将文本分成三区来处理会不会比较快呢？

先将A区前二十行替换完毕，
不会动到的B区用>输出到A区後面，
最後十行C区放B区後。

所以我想请问读取文本的前二十行就跳出回圈应该要怎麽写呢？
findstr /n [1-20] %1
会跑出奇怪的结果

Topgunguy

如果要处理的替换只有前二十行和後十行，
请问将文本分成三区来处理会不会比较快呢？

先将A区前二十行替换完毕，
不会动到的B区用>输出到A区後面，
最後十行C区放B区後。

这样做超快，但超过1mb，批处理会当掉，

@echo off
@setlocal enabledelayedexpansion
del *.txt
echo %1>drive.txt
(for /f "tokens=1* delims=:" %%d in ('findstr /n .* drive.txt') do (
set drive=%%e"
set drive=!drive:~0,2!
))
(for %%f in (%*) do (
call echo !drive!%%%%f
)>>t1.txt)

ECHO\1.HassM09 2.HassM09T 3.HassM09TOM99 4. 5.HG83
ECHO\11.M09 12.M09T 13.M09TOM99 16.M8M09  18.M57
set /p prog="prog is "

if %prog% equ 3 (call D:\LGetCode\TransCode\HassM09TOM99.bat) else (

echo\ no mode
) 

PAUSE
del *.txt
del *.doc
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HassM09TOM99.bat

@echo off
setlocal enabledelayedexpansion

(for /f "tokens=1* delims=:" %%g in ('findstr /n .* t1.txt') do (
set "file=%%h"
ECHO]************************************
echo]starting %%h
setlocal enabledelayedexpansion
set "tool=%%h"
set "tool=!tool:~-4,1!"
set "dec=!file:~-5,1!"
if !dec! gtr 9 set dec=0
set num=!dec!!tool!

rem *******
rem First20Line
rem *******
echo]First20
    (for /l %%a in (1 1 20) do (
       set str=&set /p str=
       echo]!str!
    ))<%%h >First20.txt


REM ***************************************************
REM deal First20Line
REM ***************************************************
echo]dealFirst20
(for /f "tokens=1* delims=:" %%i in ('findstr /n .* First20.txt') do (
    set "line=%%j" 
    setlocal enabledelayedexpansion
    if "!line!"=="" (echo\!line!) else (
   for %%n in (!num!) do set "line=!line:O1000=O00%%n!"
   for %%n in (!num!) do set "line=!line:O0100=O00%%n!"
   for %%n in (!num!) do set "line=!line:O0001=O00%%n!"

    for %%m in (!tool!) do set "line=!line:(SC POSTPROCESSOR A.I.C TAICHUNG)=T%%mM6!"
     set "line=!line:/G05.1 Q1= !"
    set "line=!line:.M09=.!"
    for %%l in (!tool!) do set "line=!line:H1=H%%l!"
    echo\!line!
 endlocal
)))>back.txt
move back.txt First20.txt

rem ********
rem delFirst20
rem ********
more +20 %%h>WithoutFirst20.txt
findstr .* WithoutFirst20.txt >> First20.txt

rem *********************************************************
rem Last20Line
rem *********************************************************
echo]last20line
    sort /+4096 First20.txt /o Reverse.txt
    (for /l %%a in (1 1 20) do (
       set str=&set /p str=
       echo]!str!
    ))<Reverse.txt >Last20Rev.txt
    sort /+4096 Last20Rev.txt /o Last20.txt

(for /f "tokens=1* delims=:" %%i in ('findstr /n .* Last20.txt') do (
    set "line=%%j" 
    setlocal enabledelayedexpansion
    if "!line!"=="" (echo\!line!) else (

    set "line=!line:/G05.1 Q0= !"
    set "line=!line:M30=M99!"
    echo\!line!
 endlocal
)))>back.txt
move back.txt Last20.txt


rem *******
rem delLast20Line
rem *******
ECHO]delLast20Line
sort /+4096 First20.txt /o ABrev.txt
more +20 ABrev.txt>WithoutCrev.txt
sort /+4096 WithoutCrev.txt /o WithoutC.txt
findstr .* Last20.txt >> WithoutC.txt
move WithoutC.txt %%h

rem ********
rem End Main Loop Do and For
rem ********
echo]%%h is done

))
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