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82 lines
2.0 KiB
82 lines
2.0 KiB
@echo off
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rem Enabling verbose or _echo in this script will cause
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rem errors in the calling script.
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setlocal enableextensions
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REM Create a unique file name based on the full path file name
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REM passed in.
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for %%a in (./ .- .) do if ".%1." == "%%a?." goto usage
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if "%1"=="" echo No input file specified & goto end
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set infile=%1
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for %%i in (%infile%) do (
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set fullpath=%%~fi
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set drvonly=%%~di
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set pathonly=%%~pi
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set baseonly=%%~ni
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set extonly=%%~xi
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)
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REM
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REM If the filename passed in does not already exist, return that name
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REM
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if not exist %fullpath% (
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echo %fullpath%
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goto end
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)
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REM
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REM Otherwise, derive a filename based on the one passed in that doesn't
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REM already exist.
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REM IN: filename.ext
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REM OUT: filename.1.ext
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REM
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set i=
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:loop
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set /a i+=1
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set newname=%drvonly%%pathonly%%baseonly%.%i%%extonly%
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if exist %newname% goto :loop
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echo %newname%
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REM
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REM Create %newname%'s directory if it doesn't exist
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REM
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if not exist %drvonly%%pathonly% md %drvonly%%pathonly%
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goto end
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:usage
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echo Returns a unique nonexistent full path file name based on the name passed in.
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echo.
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echo Usage: %~n0 ^<filename^>
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echo.
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echo ex: %~n0 filename.ext
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echo -^> ^<cwd^>\filename.ext ^|
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echo -^> ^<cwd^>\filename.1.ext ^| ...
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echo -^> ^<cwd^>\filename.2.ext ^| ...
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echo.
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echo ex: %~n0 %%tmp%%\mylogfile.log
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echo -^> c:\tmp\mylogfile.log ^|
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echo -^> c:\tmp\mylogfile.1.log ^| ...
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echo.
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REM DOUBLE UP '%' IN THE FOLLOWING CMD EXAMPLE TO GET CORRECT OUTPUT
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echo Typical call sequence from a CMD script:
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echo set script_name=%%~n0
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echo ...
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echo for /f %%%%i in ('%~n0 %%tmp%%\%%script_name%%.log') do set logfile=%%%%i
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echo call logmsg.cmd /t "Start %%cmdline%%"
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echo.
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echo NOTE: We write to the file, so other %~n0 calls will see it. Otherwise,
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echo multiple %~n0 calls will return the same unique file name.
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echo.
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:end
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@if defined _echo echo on
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@if defined verbose echo on
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@endlocal
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