Windows 批处理脚本中 FOR 命令中的令牌数限制 [英] Number of tokens limit in a FOR command in a Windows batch script

问题描述

我试图在 Windows 批处理脚本中处理一个文本文件，但我遇到了在 FOR 循环中似乎限制为 31 个标记的问题.我在下面的代码中隔离了这个问题:

I was trying to process a text file in a Windows batch script and I ran into something that looks like a limitation to 31 tokens in a FOR loop. I isolated the issue in the code below:

@ECHO OFF
SET DATA=01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35

FOR /F "tokens=31* delims= " %%i IN ("%DATA%") DO (
    ECHO [%%i]
    ECHO [%%j]
)
ECHO.
FOR /F "tokens=32* delims= " %%i IN ("%DATA%") DO (
    ECHO [%%i]
    ECHO [%%j]
)

输出为:

[31]
[32 33 34 35]

[01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35]
[%j]

我期待这个:

[31]
[32 33 34 35]

[32]
[33 34 35]

希望我没有做错什么，我在 FOR 命令的帮助中找不到这个限制.我使用的是 Windows XP.除了砍掉部分数据之外，您知道有什么解决方法吗?

Hoping that I haven't been doing something wrong, I couldn't find this limitation documented in the help for the FOR command. I'm using Windows XP. Do you know any workaround for this, aside from chopping off parts of the data?

谢谢.

推荐答案

我想出了一个解决方案.这并不优雅，但它解决了我的问题.当命令行解释器无法进一步处理令牌时，我将数据的剩余部分传递给 CALL :label 命令.下面是一个例子:

I came up with a solution. It's not elegant, but it solves my problem. When the commmand line interpreter cannot go further with the tokens, I pass the remaning of the data to a CALL :label command. Here is an example:

@ECHO OFF

SET DATA=01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100

FOR /F "tokens=1,31* delims= " %%i IN ("%DATA%") DO (
    ECHO  1st token: %%i
    ECHO 31th token: %%j
    CALL :processdatatokens32-62 %%k
)

:processdatatokens32-62
SET DATA=%*
FOR /F "tokens=1,31* delims= " %%i IN ("%DATA%") DO (
    ECHO 32nd token: %%i
    ECHO 62th token: %%j
    CALL :processdatatokens63-83 %%k
)
GOTO :EOF

:processdatatokens63-83
SET DATA=%*
FOR /F "tokens=1,31* delims= " %%i IN ("%DATA%") DO (
    ECHO 63th token: %%i
    ECHO 93th token: %%j
)
GOTO :EOF

输出为:

 1st token: 01
31th token: 31
32nd token: 32
62th token: 62
63th token: 63
93th token: 93

这篇关于Windows 批处理脚本中 FOR 命令中的令牌数限制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IT屋！