added support for homebrew mercurial installations

scm-plugins/scm-hg-plugin/src/main/java/sonia/scm/installer/HgInstallerFactory.java

@@ -58,6 +58,10 @@ public class HgInstallerFactory
     {
       installer = new WindowsHgInstaller();
     }
+    else if (SystemUtil.isMac())
+    {
+      installer = new MacOSHgInstaller();
+    }
     else
     {
       installer = new UnixHgInstaller();

scm-plugins/scm-hg-plugin/src/main/java/sonia/scm/installer/MacOSHgInstaller.java

@@ -0,0 +1,154 @@
+/**
+ * Copyright (c) 2010, Sebastian Sdorra
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 3. Neither the name of SCM-Manager; nor the names of its
+ *    contributors may be used to endorse or promote products derived from this
+ *    software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * http://bitbucket.org/sdorra/scm-manager
+ *
+ */
+
+
+
+package sonia.scm.installer;
+
+//~--- non-JDK imports --------------------------------------------------------
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import sonia.scm.repository.HgConfig;
+
+//~--- JDK imports ------------------------------------------------------------
+
+import java.io.File;
+import java.io.IOException;
+
+/**
+ *
+ * @author Sebastian Sdorra
+ */
+public class MacOSHgInstaller extends UnixHgInstaller
+{
+
+  /** Field description */
+  public static final String ENV_PATH = "PATH";
+
+  /** Field description */
+  public static final String PATH_HG = "hg";
+
+  /** Field description */
+  public static final String PATH_HG_BREW = "/usr/local/bin/hg";
+
+  /** Field description */
+  public static final String PATH_HG_BREW_INSTALLATION =
+    "/usr/local/Cellar/mercurial";
+
+  /** the logger for MacOSHgInstaller */
+  private static final Logger logger =
+    LoggerFactory.getLogger(MacOSHgInstaller.class);
+
+  //~--- methods --------------------------------------------------------------
+
+  /**
+   * Method description
+   *
+   *
+   * @param baseDirectory
+   * @param config
+   *
+   * @throws IOException
+   */
+  @Override
+  public void install(File baseDirectory, HgConfig config) throws IOException
+  {
+    super.install(baseDirectory, config);
+
+    String hg = config.getHgBinary();
+
+    if (PATH_HG.equals(hg))
+    {
+      hg = resolvePath();
+    }
+
+    if (PATH_HG_BREW.equals(hg))
+    {
+      File file = new File(PATH_HG_BREW);
+
+      file = file.getCanonicalFile();
+
+      if (file.getAbsolutePath().startsWith(PATH_HG_BREW_INSTALLATION))
+      {
+        String pythonPath = file.getParent();
+
+        if (logger.isInfoEnabled())
+        {
+          logger.info("found mercurial brew install set python path to {}",
+                      pythonPath);
+        }
+
+        config.setPythonPath(pythonPath);
+      }
+    }
+  }
+
+  /**
+   * Method description
+   *
+   *
+   * @return
+   */
+  private String resolvePath()
+  {
+    String hg = PATH_HG;
+
+    try
+    {
+      String path = System.getenv(ENV_PATH);
+
+      for (String p : path.split(":"))
+      {
+        File file = new File(p, PATH_HG);
+
+        if (file.exists())
+        {
+          hg = file.getAbsolutePath();
+
+          if (logger.isDebugEnabled())
+          {
+            logger.debug("resolve hg path to {}", hg);
+          }
+
+          break;
+        }
+      }
+    }
+    catch (Exception ex)
+    {
+      logger.error("could not resolve hg path", ex);
+    }
+
+    return hg;
+  }
+}