下面的脚本构成了一个纯粹的批处理文件解决方案。假设它存储为repl-str.bat
,您需要为您的应用程序这样调用它:
repl-str.bat "%SettingFile%.txt" "Pippo.K=5" "Pippo.K=1" "%SettingFile%.txt"
这指定输入文件%SettingFile%.txt
,文字且区分大小写的搜索字符串Pippo.K=5
, 替换字符串Pippo.K=1
和输出文件%SettingFile%.txt
与输入文件相同(相关技术取自此答案:用于查找和替换文本文件中的字符串的批处理脚本,无需创建额外的输出文件来存储修改后的文件)。如果没有给出输出文件,结果将输出到控制台(对于测试有用)。如果给出第五个命令行参数(任意值),则搜索将以区分大小写的方式完成。
这是脚本的代码repl-str.bat
:
@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,这种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。在每次匹配时,都会检查整个搜索字符串是否出现。如果是这样,则通过删除与搜索字符串包含的字符一样多的字符来替换它,从而避免子字符串替换语法在搜索字符串包含时失败=
,或者搜索或替换字符串包含%
or !
.
但是,如果搜索字符串的第一个字符是=
, "
, %
or !
,方法不同,脚本检查每个字符位置是否出现搜索字符串,缺点是降低了整体性能。如果给出了第六个命令行参数(任意值),则强制使用此(慢速)模式。