Java library name should be validated. (java-lang plugin)

Hi, core team.

I think a java library name should be validated in java-lang plugin.

If the following build script is given, component task can be executed, but build task(to be more precise compile../srcJar../srcJava task) will fail.

plugins {
    id 'jvm-component'
    id 'java-lang'
model {
    components {
$ gradle components

Root project

JVM library '../src'

Source sets
    Java source '../src:java'
        srcDir: src/java
    JVM resources '../src:resources'
        srcDir: src/resources

    Jar '../srcJar'
        build using task: :../srcJar
        targetPlatform: Java SE 8
        tool chain: JDK 8 (1.8)
        Jar file: build/src.jar

Note: currently not all plugins register their components, so some components may not be visible here.


Total time: 0.777 secs
$ gradle build
:compile../srcJar../srcJava FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':compile../srcJar../srcJava'.
> ディレクトリがありません: /Users/mike/IdeaProjects/gradle-projects/gradle-self-training/component-name/build/classes/../srcJar

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.


Total time: 0.761 secs

(ディレクトリがありません means directory is not found.)

Of course directory structure is created properly.

$ tree .
├── build.gradle
├── gradle
│   └── wrapper
│       ├── gradle-wrapper.jar
│       └──
├── gradlew
├── gradlew.bat
├── settings.gradle
└── src
    ├── java
    │   └── com
    │       └── test
    │           └──
    └── resources
        └── test.txt

I think these java library names should be prohibited.

  • A library name using . without any alphabet and numeric characters.
  • A library name using / after .. or after /../.