如何在批处理脚本中“包含”数据文件？

Question

我想在批处理脚本中“包含”一个数据文件。让我来解释一下，我将如何在Unix shell脚本中这样做，这样就不会怀疑我想要在批处理脚本中实现什么。

#!/bin/bash 
. data.txt # Load a data file. 

# Sourcing a file (dot-command) imports code into the script, appending to the script 
# same effect as the #include directive in a C program). 
# The net result is the same as if the "sourced" lines of code were physically present in the body of the script. 
# This is useful in situations when multiple scripts use a common data file or function library. 

# Now, reference some data from that file. 
echo "variable1 (from data.txt) = $variable1" 
echo "variable3 (from data.txt) = $variable3" 

这是data.txt中：

# This is a data file loaded by a script. 
# Files of this type may contain variables, functions, etc. 
# It may be loaded with a 'source' or '.' command by a shell script. 
# Let's initialize some variables. 
variable1=22 
variable2=474 
variable3=5 
variable4=97 
message1="Hello, how are you?" 
message2="Enough for now. Goodbye." 

在批处理脚本，我的意图是设置data.txt中的环境变量和“源”该文件在每个批次的我将在后面创建脚本。这也将帮助我通过修改一个文件（data.txt）而不是修改多个批处理脚本来更改环境变量。有任何想法吗？

Answer 1

最简单的方法是将多个SET命令存储在data.bat文件中，然后由任何批处理脚本调用该命令。例如，这是data.bat：

rem This is a data file loaded by a script. 
rem Files of this type may contain variables and macros. 
rem It may be loaded with a CALL THISFILE command by a Batch script. 
rem Let's initialize some variables. 
set variable1=22 
set variable2=474 
set variable3=5 
set variable4=97 
set message1="Hello, how are you?" 
set message2="Enough for now. Goodbye." 

到 “源” 在任何脚本这个数据文件，使用：

call data.bat 

Adenddum：途径 “包括” 的辅助（库）文件的功能。

“包含”文件的使用函数（子例程）不像变量那么直接，但可以完成。要在批处理中执行此操作，您需要物理将data.bat文件插入到原始批处理文件中。当然，这可以用文本编辑器完成！

@echo off 
rem Combine the Batch file given in first param with the library file 
copy %1+data.bat "%~N1_FULL.bat" 
rem And run the full version 
%~N1_FULL.bat% 

例如，BASE.BAT：

@echo off 
call :Initialize 
echo variable1 (from data.bat) = %variable1% 
echo variable3 (from data.bat) = %variable% 
call :Display 
rem IMPORTANT! This file MUST end with GOTO :EOF! 
goto :EOF 

DATA.BAT：

但它也可以自动的方式有一个非常简单的批处理文件名为source.bat帮助下实现

:Initialize 
set variable1=22 
set variable2=474 
set variable3=5 
set variable4=97 
exit /B 

:display 
echo Hello, how are you? 
echo Enough for now. Goodbye. 
exit /B 

您甚至可以做更复杂的source.bat，因此它会检查基本库和库文件的修改日期，并仅在需要时才创建_FULL版本。

我希望它有帮助...

Answer 2

在DOS批处理文件中没有自动的方法。您必须在循环中标记文件。例如：

for /f "tokens=1,2 delims==" %i in (data.txt) do set %i=%j 

当然，该行代码并未考虑样本data.txt文件中的注释行。