linux-machine-config.inc: Refactored useful python functions

* Refactored the useful python functions into more generic form and
  placed them in the 'xilinx-utils.bbclass' which can be inherited for
  the functions.

Signed-off-by: Nathan Rossi <nathan.rossi@xilinx.com>

1 files changed, 58 insertions, 0 deletions

diff --git a/classes/xilinx-utils.bbclass b/classes/xilinx-utils.bbclass
new file mode 100644
index 00000000..0d007b94
--- /dev/null
+++ b/classes/xilinx-utils.bbclass
@@ -0,0 +1,58 @@
+# Utility functions for various Xilinx specific recipes
+
+# Returns a ':' seperated list of expanded '${BBPATH}/$path'
+def get_additional_bbpath_filespath(path, d):
+    board_extrapaths = []
+    bbpath = d.getVar("BBPATH", True) or ""
+    for i in bbpath.split(":"):
+        board_extrapaths.append(os.path.join(i, path))
+    if len(board_extrapaths):
+        return ":".join(board_extrapaths) + ":"
+    return ""
+
+# Add a prefix or suffix to all paths in the list of paths
+#   e.g. add 'file://' to all paths
+def paths_affix(paths, suffix = "", prefix = ""):
+    if paths:
+        files=set()
+        for path in paths.split():
+            newpath = path
+            if suffix and len(suffix) != 0:
+                newpath = newpath + suffix
+            if prefix and len(prefix) != 0:
+                newpath = prefix + newpath
+            files.add(newpath)
+        if len(files) != 0:
+            return ' '.join(files)
+    return ''
+
+# Expand all relative paths to absolute based on the WORKDIR location
+def expand_workdir_paths(variable, d):
+    workdir = d.getVar("WORKDIR", True)
+    variable_value = d.getVar(variable, True) or ''
+    if variable_value:
+        files=set()
+        for path in variable_value.split():
+            if workdir:
+                files.add(os.path.join(workdir, path))
+            else:
+                files.add(path)
+        if len(files) != 0:
+            return ' '.join(files)
+    return ''
+
+# Returns a space seperated list of all files which match the extension, joined
+# with the dir path.
+def expand_dir_basepaths_by_extension(variable, dir, extension, d):
+    variable_value = d.getVar(variable, True) or ''
+    if variable_value:
+        files=set()
+        for path in variable_value.split():
+            if os.path.splitext(path)[1] == extension or extension == None:
+                if dir:
+                    files.add(os.path.join(dir, os.path.basename(path)))
+                else:
+                    files.add(os.path.basename(path))
+        if len(files) != 0:
+            return ' '.join(files)
+    return ''