Jenkins Pipeline Groovy function to execute a command with changed files as argument. Can be used for linters which must check only changed files between stages.

function.groovy

@NonCPS
def executeCommandWithFiles(command) {
    def changeLogSets = currentBuild.changeSets
    def filesString = ""

    for (int i = 0; i < changeLogSets.size(); i++) {
        def entries = changeLogSets[i].items
        
        for (int j = 0; j < entries.length; j++) {
            def entry = entries[j]
            def files = new ArrayList(entry.affectedFiles)
            
            for (int k = 0; k < files.size(); k++) {
                def file = files[k]
                filesString += " ${file.path}"
            }
        }
    }
    
    def cmd = "${command} ${filesString}"
    
    sh "${cmd}"
}

usage.groovy

pipeline {
    stages {
        stage('Code Quality') {
            steps {
                "PHP Code Sniffer" : {
                    ansiColor('xterm') {
                        executeCommandWithFiles("---script for code sniffer which accepts arguments as files---")
                    }
                }
            }
        }
    }
}