如何将项目转换添加到VS2012 .proj msbuild文件 [英] How to add item transform to VS2012 .proj msbuild file

问题描述

基于此答案描述了一项项目转换，将图像文件从jpg转换为png ，我进行了一项项目转换将.docx文件转换为.pdf.当我从projectname.proj构建文件中调用它时，出现以下错误消息:

Based off this answer describing an item transform to convert image files from jpg to png, I made an item transform that converts .docx file to .pdf. When I call it from my projectname.proj build file I get this error message:

Error   1   The condition " '%(Extension)' == '.docx' " on the
"WordToPdf" target has a reference to item metadata. References to item 
metadata are not allowed in target conditions unless they are part of an item
transform. [project path]\.build\WordToPdf.Tasks.target 7   9

我该如何进行这项工作?

How can I make this work?

这是我的目标:

    <?xml version="1.0" encoding="utf-8" ?>
    <Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
      <!-- $Id$ -->
      <Target Name="WordToPdf"
            Inputs="@(Content)"
            Outputs="@(Content -> '%(RootDir)%(Directory)%(Filename).pdf' )"
            Condition=" '%(Extension)' == '.docx' ">
        <ItemGroup>
          <Sublist Include="@(Content)" Condition=" '%(Extension)' == '.docx' " />
        </ItemGroup>
        <PropertyGroup>
          <PowerShellExe Condition=" '$(PowerShellExe)'=='' ">%WINDIR%\System32\WindowsPowerShell\v1.0\powershell.exe</PowerShellExe>
          <ScriptLocation Condition=" '$(ScriptLocation)'=='' ">.\WordToPdf.ps1</ScriptLocation>
        </PropertyGroup>

        <Exec Command="$(PowerShellExe) -NonInteractive -executionpolicy Unrestricted -command &quot;&amp; {&amp;&apos;$(ScriptLocation)&apos; -WordFilename &apos;/Input:%(Sublist.FullPath)&apos; }&quot;" />

        <Content Remove="@(Sublist)" />
        <Content Include="@(Sublist -> '%(RootDir)%(Directory)%(Filename).pdf' )" />
      </Target>
    </Project>

然后从BeforeBuild目标的我的projectname.proj文件中调用它，如下所示:

And call it from my projectname.proj file from the BeforeBuild target, as follows:

  <Import Project="$(MSBuildTasksPath)\WordToPdf.Tasks.target" />

  ....

  <Target Name="BeforeBuild">
    <CallTarget Targets="WordToPdf" />
  </Target>

更新

除了使转换正常工作的解决方法外，此目标还有更多错误.为了将来参考，这是最终的工作代码:

There was a bit more wrong with this target beyond just the workaround to get the transform to work. For future reference, here's the final working code:

<?xml version="1.0" encoding="utf-8" ?>
<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  <!-- $Id$ -->
  <Target Name="WordToPdf"
      Inputs="@(ContentFiltered)"
      Outputs="@(ContentFiltered -> '%(RootDir)%(Directory)%(Filename).pdf' )"
      DependsOnTargets="FilterContent">
    <PropertyGroup>
      <PowerShellExe Condition=" '$(PowerShellExe)'=='' ">%WINDIR%\System32\WindowsPowerShell\v1.0\powershell.exe</PowerShellExe>
      <ScriptLocation Condition=" '$(ScriptLocation)'=='' ">.\WordToPdf.ps1</ScriptLocation>
    </PropertyGroup>

    <Exec Command="$(PowerShellExe) -NonInteractive -executionpolicy Unrestricted -command &quot;&amp; {&amp;&apos;$(ScriptLocation)&apos; -WordFilename &apos;%(ContentFiltered.FullPath)&apos; }&quot;" />

    <ItemGroup>
      <Content Remove="@(ContentFiltered)" />
      <Content Include="@(ContentFiltered -> '%(RootDir)%(Directory)%(Filename).pdf' )" />
    </ItemGroup>
  </Target>
  <!-- New target to pre-filter list -->
  <Target Name="FilterContent">
    <ItemGroup>
      <ContentFiltered Include="@(Content)" Condition="'%(Extension)' == '.docx'" />
    </ItemGroup>
  </Target>

</Project>

而且，对于任何在这里搜索将msbuild字词转换为pdf项的人"的人 这是我的powershell脚本:

And, for anyone who got here searching for a "msbuild word to pdf item transform" here's my powershell script:

Param(
  [string]$WordFilename
)
$Word = New-Object -comobject Word.Application
$Doc=$Word.Documents.Open($WordFilename)
$Doc.saveas([ref](($WordFilename).replace("docx","pdf")), [ref]17)
$Doc.close()

将.docx文件作为内容添加到您的项目中-如果较新则进行复制，如果docx文件较新则将创建pdf文件，然后将pdf文件复制到其输出位置.

Add the .docx file to your project, as content - copy if newer, and the pdf file will be created if the docx file is newer, and then the pdf file is copied to its output location.

推荐答案

您可以通过创建单独的目标来解决此问题，该目标根据您的条件预先过滤项目-实际上，会创建新列表.

You can workaround it by creating separate target, which pre-filters items based on your condition - actually, creates new list.

这里是示例-注意新的DependsOnTargets标记并更改了ContentFiltered名称:

Here is sample - notice new DependsOnTargets tag and changed ContentFiltered name:

  <Target Name="WordToPdf"
        Inputs="@(ContentFiltered)"
        Outputs="@(ContentFiltered -> '%(RootDir)%(Directory)%(Filename).pdf' )"
        DependsOnTargets="FilterContent">
    <!-- 
      ...
      your actual target body here 
      ...
      -->
  </Target>

  <!-- New target to pre-filter list -->
  <Target Name="FilterContent">
    <ItemGroup>
      <ContentFiltered Include="@(Content)" Condition="'%(Extension)' == '.docx'" />
    </ItemGroup>
  </Target>

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