scala - 如何强制 SBT 使用 Javadoc 而不是 Scaladoc？

Question

我有一个基于 Java 的 Play & Akka 项目，该项目是用 SBT 构建的，有什么方法可以告诉 SBT 在构建项目时运行 Javadoc 而不是 Scaladoc？ SBT 文档说

“sbt will run javadoc if there are only Java sources in the project. If there are any Scala sources, sbt will run scaladoc.”

项目中没有 Scala 文件，但 Scaladoc 仍在运行。我认为这是因为 Play 插件在编译发生之前将 View 模板和 conf/routes 文件转换为 Scala 代码。

Answer 1

tl;dr 更改 (Compile, doc) 中的源代码以排除 *.scala 文件，这样 scaladoc 就不会启动。

正如您在下面阅读到的sources in (Compile, doc) 包含项目中的所有源代码，包括托管和非托管:

> inspect compile:doc::sources
[info] Task: scala.collection.Seq[java.io.File]
[info] Description:
[info]  All sources, both managed and unmanaged.

通过一些 filtering，您可以很容易地实现您的目标 - 在 build.sbt 中使用以下内容:

sources in (Compile, doc) <<= sources in (Compile, doc) map { _.filterNot(_.getName endsWith ".scala") }

一个示例项目的 session (带有//的评论是我的，以增强阅读):

// display current setting's value
> show compile:doc::sources
[info] ArrayBuffer(/Users/jacek/sandbox/sbt-learning-space/src/main/scala/x.scala, /Users/jacek/sandbox/sbt-learning-space/src/main/java/Hello.java)
[success] Total time: 0 s, completed Aug 24, 2014 9:31:34 PM

// generate docs - scaladoc kicks in since there are scala files
> doc
[info] Updating {file:/Users/jacek/sandbox/sbt-learning-space/}sbt-learning-space...
[info] Resolving org.fusesource.jansi#jansi;1.4 ...
[info] Done updating.
[info] Main Scala API documentation to /Users/jacek/sandbox/sbt-learning-space/target/scala-2.10/api...
model contains 3 documentable templates
[info] Main Scala API documentation successful.
Hello
[success] Total time: 1 s, completed Aug 24, 2014 9:32:15 PM

// change the value of sources in the current session only - use session save to retain it
> set sources in (Compile, doc) <<= sources in (Compile, doc) map { _.filterNot(_.getName endsWith ".scala") }
[info] Defining compile:doc::sources
[info] The new value will be used by compile:doc
[info] Reapplying settings...
[info] Set current project to hello (in build file:/Users/jacek/sandbox/sbt-learning-space/)

// display current setting's value - it only holds the single java file
> show compile:doc::sources
[info] ArrayBuffer(/Users/jacek/sandbox/sbt-learning-space/src/main/java/Hello.java)
[success] Total time: 0 s, completed Aug 24, 2014 9:33:23 PM

// generate docs - javadoc is properly generated
> doc
[info] Main Java API documentation to /Users/jacek/sandbox/sbt-learning-space/target/scala-2.10/api...
[info] Loading source file /Users/jacek/sandbox/sbt-learning-space/src/main/java/Hello.java...
[info] Constructing Javadoc information...
[info] Standard Doclet version 1.7.0_65
[info] Building tree for all the packages and classes...
[info] Generating /Users/jacek/sandbox/sbt-learning-space/target/scala-2.10/api/Hello.html...
[info] Generating /Users/jacek/sandbox/sbt-learning-space/target/scala-2.10/api/package-frame.html...
[info] Generating /Users/jacek/sandbox/sbt-learning-space/target/scala-2.10/api/package-summary.html...
[info] Generating /Users/jacek/sandbox/sbt-learning-space/target/scala-2.10/api/package-tree.html...
[info] Generating /Users/jacek/sandbox/sbt-learning-space/target/scala-2.10/api/constant-values.html...
[info] Building index for all the packages and classes...
[info] Generating /Users/jacek/sandbox/sbt-learning-space/target/scala-2.10/api/overview-tree.html...
[info] Generating /Users/jacek/sandbox/sbt-learning-space/target/scala-2.10/api/index-all.html...
[info] Generating /Users/jacek/sandbox/sbt-learning-space/target/scala-2.10/api/deprecated-list.html...
[info] Building index for all classes...
[info] Generating /Users/jacek/sandbox/sbt-learning-space/target/scala-2.10/api/allclasses-frame.html...
[info] Generating /Users/jacek/sandbox/sbt-learning-space/target/scala-2.10/api/allclasses-noframe.html...
[info] Generating /Users/jacek/sandbox/sbt-learning-space/target/scala-2.10/api/index.html...
[info] Generating /Users/jacek/sandbox/sbt-learning-space/target/scala-2.10/api/help-doc.html...
[info] Main Java API documentation successful.
Hello
[success] Total time: 1 s, completed Aug 24, 2014 9:34:01 PM