Added argument pass-through for git describe (tag filtering)

Author: mojote

readme.md

@@ -18,6 +18,7 @@ In your `build.gradle` file:
     }
     // optionally: ext.nextVersion = "major", "minor" (default), "patch" or e.g. "3.0.0-rc2"
     // optionally: ext.snapshotSuffix = "SNAPSHOT" (default) or a pattern, e.g. "<count>.g<sha>-SNAPSHOT"
+    // optionally: ext.gitDescribeArgs = '--match *[0-9].[0-9]*.[0-9]*' (default) or other arguments for git describe.
     apply plugin: 'com.cinnober.gradle.semver-git'
 
 Note: Use this method instead of the newer `plugins` method if you want to change `nextVersion` and `snapshotSuffix`.

src/main/groovy/com/cinnober/gradle/semver_git/SemverGitPlugin.groovy

@@ -29,13 +29,13 @@ import org.gradle.api.Plugin
 
 class SemverGitPlugin implements Plugin<Project> {
 
-    def static String getGitVersion(String nextVersion, String snapshotSuffix, File projectDir = null) {
-        def proc = "git describe --exact-match".execute(null, projectDir);
+    def static String getGitVersion(String nextVersion, String snapshotSuffix, String gitArgs, File projectDir = null) {
+        def proc = ("git describe --exact-match " + gitArgs).execute(null, projectDir);
         proc.waitFor();
         if (proc.exitValue() == 0) {
             return checkVersion(proc.text.trim());
         }
-        proc = "git describe".execute(null, projectDir);
+        proc =("git describe " + gitArgs).execute(null, projectDir);
         proc.waitFor();
         if (proc.exitValue() == 0) {
             def describe = proc.text.trim()
@@ -105,13 +105,17 @@ class SemverGitPlugin implements Plugin<Project> {
     void apply(Project project) {
         def nextVersion = "minor"
         def snapshotSuffix = "SNAPSHOT"
+        def gitDescribeArgs = '--match *[0-9].[0-9]*.[0-9]*'
         if (project.ext.properties.containsKey("nextVersion")) {
             nextVersion = project.ext.nextVersion
         }
         if (project.ext.properties.containsKey("snapshotSuffix")) {
             snapshotSuffix = project.ext.snapshotSuffix
         }
-        project.version = getGitVersion(nextVersion, snapshotSuffix, project.projectDir)
+        if (project.ext.properties.containsKey("gitDescribeArgs")) {
+            gitDescribeArgs = project.ext.gitDescribeArgs
+        }
+        project.version = getGitVersion(nextVersion, snapshotSuffix, gitDescribeArgs, project.projectDir)
         project.task('showVersion') {
             group = 'Help'
             description = 'Show the project version'