发生名称冲突并重命名文件时保留两个文件的批处理文件 [英] Batch File That Keeps Both Files When a Name Conflict Occurs and renames file

问题描述

我是创建.bat文件的新手.我正在尝试创建一个批处理文件，该文件将文件从一个目录移动或复制到另一个目录，如果目标目录中存在该文件，它将用(1)重命名该文件.下面是我要复制的.bat文件的内容，但它将覆盖目标目录中的文件.

I am new to creating .bat files. I am trying to create a batch file that will move or copy file(s) from one directory to another, and if the file(s) exists in the destination directory it will rename the file with a (1). Below is what I have for a .bat file to copy but it overwrites the file in the destination directory.

    copy /-y "C:\Users\Private\Desktop\Move-Copy\1\1.txt" "C:\Users\Private\Desktop\Move-Copy\2"
    pause

推荐答案

以下脚本提供了子例程:SUB_COPY ，该子例程可以执行您想要的操作，即在不覆盖现有文件的情况下复制文件.但会生成新的唯一名称，以防万一.该例程需要两个命令行参数:第一个是源项目的路径(支持通配符?和 * ；也允许使用目录)，第二个是目标(目标)目录的路径.所以这是脚本:

The following script provides a sub-routine :SUB_COPY, which can do what you want, namely copying files without overwriting already existing ones but generating new unique names in case. The routine expects two command line arguments: the first one is the path to the source item(s) (wildcards ? and * are supported; a directory is allowed too), the second one is the path to the target (destination) directory. So here is the script:

@echo off
call :SUB_COPY "C:\Users\Private\Desktop\Move-Copy\1\1.txt" "TARGET=C:\Users\Private\Desktop\Move-Copy\2"
exit /B


:SUB_COPY source_item target_dir
if not "%~3"=="" (
    >&2 echo ERROR: too many arguments!
)
set "SOURCE=%~f1"
if not defined SOURCE (
    >&2 echo ERROR: missing argument!
    exit /B 1
) else if not exist "%SOURCE%" (
    >&2 echo ERROR: source not found!
    exit /B 1
)
set "TARGET=%~f2"
if not defined TARGET set "TARGET=."

for /F "delims=" %%I in ('
    2^> nul xcopy /L /Y /I "%SOURCE%" "%TEMP%\" ^| findstr /V /R "^[0-9]"
') do (
    call :SUB_DO "%%~I" "%TARGET%"
)
exit /B

:SUB_DO source_file target_dir
set "SUFFIX="
:CHECK
if exist "%~f2\%~n1%SUFFIX%%~x1" (
    set /A SUFFIX-=1
) else (
    2> nul md "%~f2"
    > nul 2>&1 copy /B "%~f1" "%~f2\%~n1%SUFFIX%%~x1" && (
        echo INFO: copied "%~nx1" as "%~n1%SUFFIX%%~x1".
    ) || (
        >&2 echo ERROR: copying of "%~nx1" failed!
        exit /B 1
    )
    exit /B
)
goto :CHECK

首先，子例程:SUB_COPY 检查提供的参数的有效性.然后，有一个 for/F 循环，它枚举了源项，因此可以解析目录和通配符?和 * (以防万一)xcode/L 的输出，仅用于解析源并返回单个文件(非递归)； /L 告诉您不要复制任何内容，而仅列出文件).在此循环内，调用了另一个子例程:SUB_DO ，该例程复制单个文件.此例程检查目标目录中是否存在相同名称的文件，如果存在，则在文件名后附加后缀 -1 ；然后重复检查，如果仍然找到文件，则后缀变为 -2 ，依此类推，直到找到新的文件名为止，该文件名在目标目录中不存在，依此类推.复制实际上是执行的.

Firstly, the sub-routine :SUB_COPY checks the provided arguments for validity. Afterwards there is a for /F loop which enumerates the source items, so to resolve directories and wildcards ? and * in case (this loop parses the output of xcopy /L, just to resolve the source and return individual files (non-recursively); /L tells to not copy anything but list the files only). Inside of this loop, another sub-routine :SUB_DO is called, which does the copying of a single file; this routine checks whether a file with the same name exists in the target directory, and if so, a suffix -1 is appended to the file name; the check is repeated then, and if still a file is found, the suffix becomes -2, and so on, until a new file name is found, which does not occur in the target directory, and so the copying is actually performed.

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