Add regexp option to conditional publisher

Allows for use of regular expression conditions in the conditional
publisher plugin. Exposes two new fields: condition-expression and
condition-searchtext.

Change-Id: Ib752d686f009ca5687956622e22ee466c6791695

jenkins_jobs/modules/publishers.py

@@ -4287,6 +4287,11 @@ def conditional_publisher(parser, xml_parent, data):
                        executed by cmd, under Windows
 
                          :condition-command: Command to execute
+    regexp             Run the action if a regular expression matches
+
+                         :condition-expression: Regular Expression
+                         :condition-searchtext: Text to match against
+                           the regular expression
     file-exists        Run the action if a file exists
 
                          :condition-filename: Check existence of this file
@@ -4365,6 +4370,12 @@ def conditional_publisher(parser, xml_parent, data):
             ctag.set('class',
                      class_pkg + '.contributed.BatchFileCondition')
             XML.SubElement(ctag, "command").text = cdata['condition-command']
+        elif kind == "regexp":
+            ctag.set('class',
+                     class_pkg + '.core.ExpressionCondition')
+            XML.SubElement(ctag,
+                           "expression").text = cdata['condition-expression']
+            XML.SubElement(ctag, "label").text = cdata['condition-searchtext']
         elif kind == "file-exists":
             ctag.set('class',
                      class_pkg + '.core.FileExistsCondition')

tests/publishers/fixtures/conditional-publisher004.xml

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<project>
+  <publishers>
+    <org.jenkins__ci.plugins.flexible__publish.FlexiblePublisher>
+      <publishers>
+        <org.jenkins__ci.plugins.flexible__publish.ConditionalPublisher>
+          <condition class="org.jenkins_ci.plugins.run_condition.core.ExpressionCondition">
+            <expression>^(origin\/)?master$</expression>
+            <label>$GIT_BRANCH</label>
+          </condition>
+          <runner class="org.jenkins_ci.plugins.run_condition.BuildStepRunner$Fail"/>
+          <publisher class="hudson.tasks.ArtifactArchiver">
+            <artifacts>**/**</artifacts>
+            <latestOnly>false</latestOnly>
+            <allowEmptyArchive>true</allowEmptyArchive>
+          </publisher>
+        </org.jenkins__ci.plugins.flexible__publish.ConditionalPublisher>
+      </publishers>
+    </org.jenkins__ci.plugins.flexible__publish.FlexiblePublisher>
+  </publishers>
+</project>

tests/publishers/fixtures/conditional-publisher004.yaml

@@ -0,0 +1,10 @@
+publishers:
+    - conditional-publisher:
+        - condition-kind: regexp
+          condition-expression: ^(origin\/)?master$
+          condition-searchtext: $GIT_BRANCH
+          action:
+              - archive:
+                  artifacts: '**/**'
+                  allow-empty: 'true'
+