拆分多行环境变量为行 [英] Splitting a multi-line environment variable into lines

问题描述

我有以下问题：
我一个詹金斯服务器上执行一个视窗批处理文件，并具有多行环境变量（集经由詹金斯参数）分成单线条。每一行是另一个程序的参数列表的一部分：

I have the following problem: I execute a windows batch file on a Jenkins server and have to split a multi-line environment variable (set vía a Jenkins parameter) into single lines. Each line is part of a parameter list for another program:

詹金斯文本参数：

-foo 224 -bar "Some parameter with spaces"
-foo 225 -bar "another param"

应该导致内部詹金斯以下呼叫：

Should lead to the following calls inside Jenkins:

myprog.exe -baz 0 -meow -foo 224 -bar "Some parameter with spaces"
myprog.exe -baz 0 -meow -foo 225 -bar "another param"

我试图把它与分割FOR / F ，但没有任何成功。搜索没有露面任何有用的，什么是我试图给我的语法错误或刚刚打印的第一行。

I tried to split it with for /F but did not have any success. Searching did not turn up anything useful, anything I tried gave me syntax errors or just printed the first line.

这是中，我尝试过的事情：

This is among the things that I tried:

for /f "tokens=* delims= " %%f in ("%varname%") do

给我的语法错误，因为该变量已经包含引号。

Gives me syntax errors, because that variable already contains quotes.

echo %varname%

是否仅输出变量的第一行

Does only output the first line of the variable.

任何想法？

推荐答案

在FOR / F命令采用LF的插入变量行分隔符（这是FOR / F命令的自然行为），所以没有什么额外的要求为了处理与FOR / F这样的变量：

The FOR /F command takes the LF's inserted in the variable as lines separators (this is the natural behavior of FOR /F command), so nothing additional is required in order to process such variable with FOR /F:

@echo off
setlocal EnableDelayedExpansion

rem Create a variable containing line breaks.
set LF=^
%empty line 1/2%
%empty line 2/2%
set "str=The quick brown!LF!fox jumps over!LF!the lazy dog."

set line=0
for /F "delims=" %%a in ("!str!") do (
   set /A line+=1
   echo Line !line!: %%a
)

这里的关键是扩大变量，！exclamationMarks !;否则LF将削减％值％。另外，如果你想的完整的生产线的由LF分隔，用delims =。输出例如：

The key here is expanding the variable with !exclamationMarks!; otherwise the LF will cut the %value%. Also, if you want complete lines separated by LF, use "delims=". Output example:

Line 1: The quick brown
Line 2: fox jumps over
Line 3: the lazy dog.

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