devtool: check that source tree still exists

Sometimes, particularly if you extracted the source to /tmp which is on
tmpfs, the external source tree that is being pointed to may no longer
exist when you come to run "devtool build" or "devtool update-recipe"
etc. Make all of the commands that need to check for a recipe being in
the workspace call a single function and have that function additionally
check the source tree still exists where appropriate.

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 14 insertions, 0 deletions

diff --git a/scripts/lib/devtool/__init__.py b/scripts/lib/devtool/__init__.py
index 404d3e6645..fb699b5c61 100644
--- a/scripts/lib/devtool/__init__.py
+++ b/scripts/lib/devtool/__init__.py
@@ -136,3 +136,17 @@ def parse_recipe(config, tinfoil, pn, appends):
                         not path.startswith(config.workspace_path)]
     return oe.recipeutils.parse_recipe(recipefile, append_files,
                                        tinfoil.config_data)
+
+def check_workspace_recipe(workspace, pn, checksrc=True):
+    """
+    Check that a recipe is in the workspace and (optionally) that source
+    is present.
+    """
+    if not pn in workspace:
+        raise DevtoolError("No recipe named '%s' in your workspace" % pn)
+    if checksrc:
+        srctree = workspace[pn]['srctree']
+        if not os.path.exists(srctree):
+            raise DevtoolError("Source tree %s for recipe %s does not exist" % (srctree, pn))
+        if not os.listdir(srctree):
+            raise DevtoolError("Source tree %s for recipe %s is empty" % (srctree, pn))