解析包含逗号分隔值的命令行输入批处理文件 [英] Batch file for parsing command line input that contains comma separated values
问题描述
我的工作，这需要设置的输入参数的命令一个命令行工具。
然后，这些输入参数进行验证对predefined名。该实用程序以这种方式调用的：
I am working on a command line utility that takes set of input parameters as command. Those input parameters are then validated against predefined names. The utility is invoked in this manner:
runUtility.cmd -A -B X，Y，Z -C是W
下面的参数是A，B和C（一个开头 - ）。
现在，验证规则如下：
Here parameters are A, B and C (one that starts with -). Now the validation rules are as follows:
-
参数的名称应与predefined的名字，这样就可以不传递任何参数无效说-UVW
Parameter's name should match predefined names, so that one can not pass any invalid parameter say -UVW
参数可以或可以不具有一个值。在上面的例子-A没有价值，而-B有X，Y，Z和-C有瓦特
Parameter may or may not have a value. In above example -A has no value, while -B has x,y,z and -C has w.
我写了这个code来验证输入：
I have written this code to validate the inputs:
:validate
set argument=%1
set argumentValue=%2
if "%argument%" == "-A" (
shift
goto validate
)
if "%argument%" == "-B" (
if "%argumentValue%" == "" (
echo Empty value for -B
goto end
)
shift
shift
goto validate
)
if "%argument%" == "-C" (
if "%argumentValue%" == "" (
echo Empty value for -C
goto end
)
shift
shift
goto validate
)
if %argument%" == "" (
goto end
)
Argument %argument% is invalid
:end
但是，这似乎并没有工作，因为-B已逗号分隔值，所以对b当它两班倒，在接下来的迭代，Y变成1％和z变为％2。由于y是不是一个参数，它失败，code的最后行权之争y是无效的。
其实逗号作为通过SHIFT命令分隔符，所以X，Y，Z确实仍然是一个单一的值。
But this does not seem to work, as -B has comma separated values, so for B when it does two shifts, in the next iteration, y becomes %1 and z becomes %2. Since y is not a parameter, it fails with last line of code that "Argument y is invalid". Actually comma is taken as delimiter by SHIFT command, so x,y,z does remain a single value.
我要X，Y，Z将被视为一个单一的值或有任何其他方式来处理呢？
我有点新的批量脚本，我试着用FOR循环但我没能在每次迭代得到％1％2在一起。
I want x,y,z to be taken as a single value OR is there any other way to process this? I am bit new to batch scripting , I tried with FOR loop but there I was not able to get %1 and %2 together in every iteration.
推荐答案
批量使用的空格，逗号，分号，制表符，和平等分隔参数的任意组合。如果你想在一个参数的任何这些字符，那么参数必须加引号。
Batch uses any combination of space, comma, semicolon, tab, and equal to delimit parameters. If you want to include any of those characters in a parameter, then the parameter must be quoted.
runUtility.cmd -A -B "x,y,z" -C w
您脚本可以删除与〜修改封闭引号。这也是一个好主意，引号内您的整个作业，以防止问题的字符，如＆安培; ， | ，等在下面的分配的双引号不会被包含在值
Your script can remove the enclosing quotes with the ~ modifier. It is also a good idea to enclose your entire assignment within quotes to guard against problem characters like &, |, etc. The double quotes in the assignment below will not be included in the value.
set "argumentValue=%~2"
我发展，你可能想看看一个选项解析器：的Windows bat文件可选参数解析
解析code几乎没有变化，无论您定义的选项。有改变的唯一的东西都是使用同一个可变的选项定义， SHIFT / 3 应修改 SHIFT / 1 ，每个％〜3 变成％〜1 和％〜 4 变成％〜2 。
The parsing code hardly changes regardless what options you define. The only things that have to change are the definition of your options using a single variable, the SHIFT /3 should be modified to SHIFT /1, every %~3 becomes %~1, and %~4 becomes %~2.
选项解析器为未指定的选项自动提供的缺省值的能力。
The option parser has the ability to automatically supply default values for unspecified options.
假设你没有默认值，你的选择将被定义为
Assuming you do not have default values, your options would be defined as
set "options=-A: -B:"" -C:"""
含义 -B 的 -A 选项，这并不需要一个值，而 -C 称取值，但默认情况下是不确定的。选项
Meaning an -A option that does not take a value, and -B and -C options that take values but by default are undefined.
选项都存储在匹配选项名称的变量（包括破折号）。
The options are stored in variables that match the option name (dash included).
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