Ответ 1
То, что вы имеете в виду здесь, известно как пакетное. Я очень много писал о доработке. Вы можете найти мои блоги, перечисленные в http://sedotech.com/Resources#Batching. Пакетирование - это способ сделать цикл, не делая этого в MSBuild. Вы можете разделить группы на значения с общим значением метаданных. Метаданные могут быть такими значениями, как Identity, FullPath, Filename и т.д. Вы даже можете создавать свои собственные метаданные. В любом случае, когда вы загружаете более одного значения, они группируются независимо друг от друга. Взгляните на пример, который я создал. Результат выполнения цели отображается после script.
<Project ToolsVersion="4.0" DefaultTargets="Demo" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<ItemGroup>
<ItemsToCopy Include="src\0001.txt;src\0002.txt;src\sub\sub-0001.txt;src\sub\sub-0002.txt"/>
</ItemGroup>
<ItemGroup>
<DeployPath Include="C:\temp\path01\" />
<DeployPath Include="C:\temp\path02\" />
</ItemGroup>
<!--
Target batching is happening here because there is a
%() expression inside the Outputs attribute. So that
means that this target will be repeated once per
uinque batch of %(DeployPath.Identity). Identity is
the value that is passed in the Incude= attribute.
Since we know there are two values we know that
this target will be executed twice, and on each
pass the DeployPath item will only look to contain
a single value. If there were duplicates then the list
could contain more than 1 value.
-->
<Target Name="Demo" Outputs="%(DeployPath.Identity)">
<Message Text="DeployPath.Identity: %(DeployPath.Identity)" />
<Message Text="======================================" Importance="high"/>
<Message Text="ItemsToCopy1: @(ItemsToCopy)|| DeployPath.Identity: %(DeployPath.Identity)" />
<Message Text="======================================" Importance="high"/>
<!--
In the next emample you are batching on both the DeployPath item list as well as
the ItemsToCopy item. When two batched items are in the same expression they are
matched individually, so you ge a value for DeployPath metadata but not ItemsToCopy
metadata. That is why your copy only copied to one location.
-->
<Message Text="ItemsToCopy2: @(ItemsToCopy)|| DeployPath.Identity-RecursiveDir: %(DeployPath.Identity)\%(RecursiveDir)" />
<Message Text="======================================" Importance="high"/>
<!--
In this example I create a property and assign it the value of
%(DeployPath.Identity). We know there will only be one such
value. Because there should only be one value with Identity
when this target is executed so it is safe to
convert item to property
Because we are not batching on both items we will get the values for both vaules
to be correct becuase the target is repeated for the other
DeployPath values.
-->
<PropertyGroup>
<_DeployPathIdentity>%(DeployPath.Identity)</_DeployPathIdentity>
</PropertyGroup>
<Message Text="ItemsToCopy3: @(ItemsToCopy)|| _DeployPathIdentity-RecursiveDir: $(_DeployPathIdentity)\%(RecursiveDir)" />
<!--
I've always preferred to use DestinationFiles so my sample
below uses that. But you could change the target to use
DestinationFolder instead.
-->
<Copy SourceFiles="@(ItemsToCopy)"
DestinationFiles="@(ItemsToCopy->'$(_DeployPathIdentity)%(RecursiveDir)%(Filename)%(Extension)')" />
</Target>
</Project>
Выход
Build started 9/10/2010 9:31:28 PM.
Project "I:\Development\My Code\Community\MSBuild\CopyFiles01.proj" on node 1 (default targets).
Demo:
DeployPath.Identity: C:\temp\path01\
======================================
ItemsToCopy1: src\0001.txt;src\0002.txt;src\sub\sub-0001.txt;src\sub\sub-0002.txt|| DeployPath.I
dentity: C:\temp\path01\
======================================
ItemsToCopy2: || DeployPath.Identity-RecursiveDir: C:\temp\path01\\
ItemsToCopy2: src\0001.txt;src\0002.txt;src\sub\sub-0001.txt;src\sub\sub-0002.txt|| DeployPath.I
dentity-RecursiveDir: \
======================================
ItemsToCopy3: src\0001.txt;src\0002.txt;src\sub\sub-0001.txt;src\sub\sub-0002.txt|| _DeployPathI
dentity-RecursiveDir: C:\temp\path01\\
Creating directory "C:\temp\path01".
Copying file from "src\0001.txt" to "C:\temp\path01\0001.txt".
Copying file from "src\0002.txt" to "C:\temp\path01\0002.txt".
Copying file from "src\sub\sub-0001.txt" to "C:\temp\path01\sub-0001.txt".
Copying file from "src\sub\sub-0002.txt" to "C:\temp\path01\sub-0002.txt".
Demo:
DeployPath.Identity: C:\temp\path02\
======================================
ItemsToCopy1: src\0001.txt;src\0002.txt;src\sub\sub-0001.txt;src\sub\sub-0002.txt|| DeployPath.I
dentity: C:\temp\path02\
======================================
ItemsToCopy2: || DeployPath.Identity-RecursiveDir: C:\temp\path02\\
ItemsToCopy2: src\0001.txt;src\0002.txt;src\sub\sub-0001.txt;src\sub\sub-0002.txt|| DeployPath.I
dentity-RecursiveDir: \
======================================
ItemsToCopy3: src\0001.txt;src\0002.txt;src\sub\sub-0001.txt;src\sub\sub-0002.txt|| _DeployPathI
dentity-RecursiveDir: C:\temp\path02\\
Creating directory "C:\temp\path02".
Copying file from "src\0001.txt" to "C:\temp\path02\0001.txt".
Copying file from "src\0002.txt" to "C:\temp\path02\0002.txt".
Copying file from "src\sub\sub-0001.txt" to "C:\temp\path02\sub-0001.txt".
Copying file from "src\sub\sub-0002.txt" to "C:\temp\path02\sub-0002.txt".
Done Building Project "I:\Development\My Code\Community\MSBuild\CopyFiles01.proj" (default targets
).
Build succeeded.