Git interface functions for gradle build scripts (e.g. for Android). To use add this to your build script: apply from: 'git.gradle'

git.gradle

def getGitCommit() {
    return 'git rev-parse --short HEAD'.execute([], project.rootDir).text.trim()
}

def getGitTag() {
    def p = Runtime.getRuntime().exec("git describe HEAD --abbrev=0")

    if (p.waitFor() != 0) {
        return "none" // no tag
    }
    return p.getInputStream().readLines().get(0).toString().trim()
}

def getGitBranchCommitNumber() {
    def p = Runtime.getRuntime().exec("git rev-list HEAD --count")

    if (p.waitFor() != 0) {
        return 0 // no git revisions
    }
    return p.getInputStream().readLines().get(0).toInteger()
}

// Export functions by turning them into closures
ext {
    getGitTag = this.&getGitTag
    getGitCommit = this.&getGitCommit
    getGitBranchCommitNumber = this.&getGitBranchCommitNumber
}