问题描述
我必须从类似Pippo.K = 5的txt中搜索一个字符串，并将其替换为Pippo.K = 1.我需要搜索整个字符串.我所做的是:
i have to search a string from a txt like Pippo.K=5 and replace it with Pippo.K=1. I need to search the entire string. What i did is:
set "search=Pippo.K=5"
set "replace=Pippo.K=1"
set "textFile=%SettingFile%.txt"
for /f "delims=" %%i in ('type "%textFile%" ^& break ^> "%textFile%" ') do (
set "line=%%i"
setlocal enabledelayedexpansion
set "line=!line:%search%=%replace%!"
>>"%textFile%" echo(!line!
endlocal
)
但是我返回的是5=Pippo.K=1=5
如何解决此错误?
推荐答案
以下脚本构成了一个纯 batch-file 解决方案.假设它存储为repl-str.bat，则需要为您的应用程序这样调用它:
The following script constitutes a pure batch-file solution. Supposing it is stored as repl-str.bat, you need to call it like this for your application:
repl-str.bat "%SettingFile%.txt" "Pippo.K=5" "Pippo.K=1" "%SettingFile%.txt"
这指定了输入文件%SettingFile%.txt，文字和区分大小写的搜索字符串Pippo.K=5，替换字符串Pippo.K=1和与输入文件相同的输出文件%SettingFile%.txt(相关技术具有摘自以下答案:用于在文本文件中查找和替换字符串的批处理脚本，而无需创建用于存储修改后文件的额外输出文件 ).如果未提供输出文件，则结果将输出到控制台(可用于测试).如果给定第五个命令行参数(任意值)，则以区分大小写的方式进行搜索.
This specifies the input file %SettingFile%.txt, the literal and case-sensitive search string Pippo.K=5, the replacement string Pippo.K=1 and the output file %SettingFile%.txt that is the same as the input file (the related technique has been taken from this answer: Batch script to find and replace a string in text file without creating an extra output file for storing the modified file). If no output file is given, the result is output to the console (useful for testing). If a fifth command line argument is given (arbitrary value), the search is done in a case-sensitive manner.
这是脚本repl-str.bat的代码:
@echo off
setlocal EnableExtensions DisableDelayedExpansion
set "FILE_I=%~1"
set "SEARCH=%~2"
set "REPLAC=%~3"
set "FILE_O=%~4"
set "CASE=%~5"
set "FLAG=%~6"
if not defined FILE_I exit /B 1
if not defined SEARCH exit /B 1
if not defined FILE_O set "FILE_O=con"
if defined CASE set "CASE=#"
if defined FLAG set "FLAG=#"
for /F "delims=" %%L in ('
findstr /N /R "^" "%FILE_I%" ^& break ^> "%FILE_O%"
') do (
set "STRING=%%L"
setlocal EnableDelayedExpansion
set "STRING=!STRING:*:=!"
call :REPL RETURN STRING SEARCH REPLAC "%CASE%" "%FLAG%"
>> "%FILE_O%" echo(!RETURN!
endlocal
)
endlocal
exit /B
:REPL rtn_string ref_string ref_search ref_replac case flag
setlocal EnableDelayedExpansion
set "STR=!%~2!"
set "SCH=!%~3!"
set "RPL=!%~4!"
if "%~5"=="" (set "OPT=/I") else (set "OPT=")
if not defined SCH endlocal & set "%~1=" & exit /B 1
set "SCH_CHR=!SCH:~,1!"
if not "%~6"=="" set "SCH_CHR="
if "!SCH_CHR!"=="=" set "SCH_CHR=" & rem = terminates search string
if "!SCH_CHR!"==""^" set "SCH_CHR=" & rem " could derange syntax
if "!SCH_CHR!"=="%%" set "SCH_CHR=" & rem % ends variable expansion
if "!SCH_CHR!"=="^!" set "SCH_CHR=" & rem ! ends variable expansion
call :LEN SCH_LEN SCH
call :LEN RPL_LEN RPL
set /A RED_LEN=SCH_LEN-1
set "RES="
:LOOP
call :LEN STR_LEN STR
if not defined STR goto :END
if defined SCH_CHR (
set "WRK=!STR:*%SCH_CHR%=!"
if %OPT% "!WRK!"=="!STR!" (
set "RES=!RES!!STR!"
set "STR="
) else (
call :LEN WRK_LEN WRK
set /A DFF_LEN=STR_LEN-WRK_LEN-1,INC_LEN=DFF_LEN+1,MOR_LEN=DFF_LEN+SCH_LEN
for /F "tokens=1,2,3 delims=," %%M in ("!DFF_LEN!,!INC_LEN!,!MOR_LEN!") do (
rem set "RES=!RES!!STR:~,%%M!"
if defined WRK set "WRK=!WRK:~,%RED_LEN%!"
if %OPT% "!STR:~%%M,1!!WRK!"=="!SCH!" (
set "RES=!RES!!STR:~,%%M!!RPL!"
set "STR=!STR:~%%O!"
) else (
set "RES=!RES!!STR:~,%%N!"
set "STR=!STR:~%%N!"
)
)
)
) else (
if %OPT% "!STR:~,%SCH_LEN%!"=="!SCH!" (
set "RES=!RES!!RPL!"
set "STR=!STR:~%SCH_LEN%!"
) else (
set "RES=!RES!!STR:~,1!"
set "STR=!STR:~1!"
)
)
goto :LOOP
:END
if defined RES (
for /F delims^=^ eol^= %%S in ("!RES!") do (
endlocal
set "%~1=%%S"
)
) else endlocal & set "%~1="
exit /B
:LEN rtn_length ref_string
setlocal EnableDelayedExpansion
set "STR=!%~2!"
if not defined STR (set /A LEN=0) else (set /A LEN=1)
for %%L in (4096 2048 1024 512 256 128 64 32 16 8 4 2 1) do (
if defined STR (
set "INT=!STR:~%%L!"
if not "!INT!"=="" set /A LEN+=%%L & set "STR=!INT!"
)
)
endlocal & set "%~1=%LEN%"
exit /B
基本上，此方法采用搜索字符串的第一个字符，并在输入文本中查找它.在每个匹配项中，检查是否出现了整个搜索字符串.如果是这样，则通过替换与搜索字符串组成的字符一样多的字符，将其替换为替换字符串，从而避免子字符串替换语法在搜索字符串包含=或搜索或替换字符串包含或!.
但是，如果搜索字符串的第一个字符是=，"，%或!，则方法会有所不同，脚本会检查每个字符位置是否出现搜索字符串，这有缺点整体性能下降.如果给定第六个命令行参数(任意值)，则此(慢速)模式是强制的.
Basically, this approach takes the first character of the search string and looks it up in the input text. At each match, it is checked whether the whole search string occurs. If so, it is replaced by the replacement string by removing as many characters as the search string consists of, hence avoiding sub-string replacement syntax which fails in case the search string contains =, or the search or the replacement string contains % or !.
However, if the first character of the search string is =, ", % or !, the approach is different, the script checks every single character position for occurrence of the search string then, with the disadvantage of reduced overall performance. If a sixth command line argument is given (arbitrary value), this (slow) mode is forced.
这篇关于批处理文件:如何搜索和替换具有"="的字符串里面的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！