Ability to list all tags

readme.md

@@ -53,6 +53,7 @@ You can get an object containing more detailed information by calling:
 ```groovy
 def details = versionDetails()
 details.lastTag
+details.lastTags
 details.commitDistance
 details.gitHash
 details.gitHashFull // full 40-character Git commit hash
@@ -65,6 +66,7 @@ details.isCleanTag
 val versionDetails: groovy.lang.Closure<com.palantir.gradle.gitversion.VersionDetails> by extra
 val details = versionDetails()
 details.lastTag
+details.lastTags
 details.commitDistance
 details.gitHash
 details.gitHashFull // full 40-character Git commit hash

src/main/java/com/palantir/gradle/gitversion/Git.java

@@ -173,6 +173,19 @@ public String describe(String prefix) {
         }
     }
 
+    public String[] getAllTags() {
+        try {
+            String result = runGitCmd("tag", "--points-at", "HEAD");
+            if (result.isEmpty()) {
+                return new String[0];
+            }
+            return result.split("\n");
+        } catch (IOException | InterruptedException | RuntimeException e) {
+            log.debug("Native git describe failed", e);
+            return null;
+        }
+    }
+
     private boolean gitCommandExists() {
         try {
             // verify that "git" command exists (throws exception if it does not)

src/main/java/com/palantir/gradle/gitversion/VersionDetails.java

@@ -27,6 +27,8 @@ public interface VersionDetails {
 
     String getLastTag();
 
+    String[] getLastTags();
+
     int getCommitDistance();
 
     boolean getIsCleanTag();

src/main/java/com/palantir/gradle/gitversion/VersionDetailsImpl.java

@@ -90,6 +90,11 @@ public String getLastTag() {
         return match.matches() ? match.group(1) : null;
     }
 
+    @Override
+    public String[] getLastTags() {
+        return nativeGitInvoker.getAllTags();
+    }
+
     @Override
     public String getGitHash() throws IOException {
         String gitHashFull = getGitHashFull();

src/test/groovy/com/palantir/gradle/gitversion/GitVersionPluginTests.groovy

@@ -605,6 +605,7 @@ class GitVersionPluginTests extends Specification {
         buildResult.output.contains(":printVersion\n2.0.0\n")
     }
 
+
     def 'test multiple tags on same commit - most recent annotated tag' () {
         given:
         buildFile << '''
@@ -670,6 +671,33 @@ class GitVersionPluginTests extends Specification {
         buildResult.output.contains(":printVersion\n1.0.0\n")
     }
 
+    def 'test multiple tags on same commit - all tags are listed' () {
+        given:
+        buildFile << '''
+            plugins {
+                id 'com.palantir.git-version'
+            }
+
+            task printVersionDetails { doLast {
+                println versionDetails().getLastTags()
+            }}
+        '''.stripIndent()
+        gitIgnoreFile << 'build'
+        Git git = new Git(projectDir, true)
+        git.runGitCommand("init", projectDir.toString())
+        git.runGitCommand("add", ".")
+        git.runGitCommand("commit", "-m", "'initial commit'")
+        git.runGitCommand("tag", "1.0.0")
+        git.runGitCommand("tag", "2.0.0")
+        git.runGitCommand("tag", "3.0.0")
+
+        when:
+        BuildResult buildResult = with('printVersionDetails').build()
+
+        then:
+        buildResult.output.contains("[1.0.0, 2.0.0, 3.0.0]")
+    }
+
     def 'test tag set on deep commit' () {
         given:
         buildFile << '''

src/test/java/com/palantir/gradle/gitversion/VersionDetailsTest.java

@@ -102,7 +102,7 @@ public void short_sha_when_no_annotated_tags_are_present_and_dirty_content() thr
 
         write(new File(temporaryFolder, "foo"));
 
-        assertThat(versionDetails().getVersion()).isEqualTo("f0f4555.dirty");
+        assertThat(versionDetails().getVersion()).isEqualTo("611f9e4.dirty");
     }
 
     @Test