Gradle Copy task issue with duplicate file

Question

In build.gradle I have the following code:

task copyModifiedSources(type:Copy) {
    from ('ApiClient.java.modified') {
        rename 'ApiClient.java.modified', 'ApiClient.java'
    }
    setDuplicatesStrategy(DuplicatesStrategy.INCLUDE)
    into 'build/generated/src/main/java/com/client/invoker'
}

I am trying to copy ApiClient.java.modified (renamed to ApiClient.java before copy) file into build/generated/src/main/java/com/client/invoker folder which already has ApiClient.java file. I am using a duplicate strategy to override APIClient.java from /invoker folder with ApiClient.java.modified.

If I rename the copying file to the file name not in /invoker folder, then it works but does not work with the duplicate file name. The file is not copied successfully.

Could you please help me to figure out what is going wrong?

Gradle -> 6.5.1
Java -> 11

PrasadU · Accepted Answer · 2020-08-08 05:58:36Z

1

the rename is same level as from not under from.

below example final file in build/gen content is 'override'

task setupFiles() {
    doLast {
        mkdir 'build/override' 
        mkdir 'build/gen'
        new File('build/gen/ApiClient.java').text = "orig"
        new File('build/override/ApiClient.java.modified').text = "override"
    }
}

task copyModifiedSources(type: Copy, dependsOn: setupFiles) {
    from 'build/override'
    include '*.modified'
    rename '(.*).modified', '$1'

    setDuplicatesStrategy(DuplicatesStrategy.INCLUDE)
    into 'build/gen'
}

run gradle clean copyModifiedSources

answered Aug 8, 2020 at 5:58

PrasadU

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Comments

Dilip Dalwadi · Accepted Answer · 2023-04-21 07:50:59Z

I also faced same issue. duplicatesStrategy did not check if destination directory has the same files while copying the files from single source of directory. But duplicatesStrategy checks if multiple sources which are being copied into destination have the same files or not. If have then it will perform the action based on strategy. For example.

['warn', 'include', 'exclude', 'fail'].each { strategy ->
    task "copyDuplicatesStrategy${strategy.capitalize()}"(type: Copy) {

        def sourceFile = 'src/main/resources/Folder2/abc.txt'
        def destDir = 'src/main/resources/Folder1_'
        def finalOutput = "$destDir/abc.txt"

        from 'src/webroot'
        from sourceFile
        from 'src/manual'

        into "$destDir"

        // Only the value for this property differs for
        // each created task.
        duplicatesStrategy = strategy

        // Print the used duplicates strategy when
        // the task starts.
        doFirst {
            println "Copying with duplicates strategy '${strategy}'."
        }

        // Print the contents of the copied file COPY.txt.
        doLast {
            println "Contents of COPY.txt: Exist :: ${file(sourceFile).exists()}, Loc: ${file(sourceFile).getPath()}"
            println file(sourceFile).text

            println "Contents of COPY.txt: Exist :: ${file(finalOutput).exists()}, Loc: ${file(finalOutput).getPath()}"
            println file(finalOutput).text
        }
    }
}

For reference: https://blog.mrhaki.com/2015/04/gradle-goodness-handle-copying.html

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