# HG changeset patch
# User Chris Cannam
# Date 1301323850 -3600
# Node ID 4d13cacb3e65a91549e8e68327c3e0c21d60d90d
# Parent  5a93ae4667d644db04010d8e8f74ea24ad913f22
Add warning dialog if version of Mercurial discovered is too old

diff -r 5a93ae4667d6 -r 4d13cacb3e65 src/mainwindow.cpp
--- a/src/mainwindow.cpp	Thu Mar 24 14:15:53 2011 +0000
+++ b/src/mainwindow.cpp	Mon Mar 28 15:50:50 2011 +0100
@@ -219,8 +219,6 @@
 void MainWindow::hgTest()
 {
     QStringList params;
-    //!!! should we test version output? Really we want at least 1.7.x
-    //!!! for options such as merge --tool
     params << "--version";
     m_runner->requestAction(HgAction(ACT_TEST_HG, m_myDirPath, params));
 }
@@ -1980,7 +1978,24 @@
     switch (action) {
 
     case ACT_TEST_HG:
+    {
+        QRegExp versionRE("^Mercurial.*version ([\\d+])\\.([\\d+])");
+        int pos = versionRE.indexIn(output);
+        if (pos >= 0) {
+            int major = versionRE.cap(1).toInt();
+            int minor = versionRE.cap(2).toInt();
+            // We need v1.7 or newer
+            if (major < 1 || (major == 1 && minor < 7)) {
+                MoreInformationDialog::warning
+                    (this,
+                     tr("Newer Mercurial version required"),
+                     tr("Newer Mercurial version required"),
+                     tr("To use EasyMercurial, you should have at least Mercurial v1.7 installed.<br><br>The version found on this system (v%1.%2) does not support all of the features required by EasyMercurial.").arg(major).arg(minor),
+                     output);
+            }
+        }
         break;
+    }
 
     case ACT_TEST_HG_EXT:
         break;