wic: Refactor getting bitbake variables

Wic gets bitbake variables by parsing output of 'bitbake -e' command.

This implementation improves this procedure as it runs 'bitbake -e' only
when API is called and does it only once, i.e. in a "lazy" way. As parsing
results are cached 'bitbake -e' is run only once and results are parsed
only once per requested set of variables.

get_bitbake_var became the only API call. It replaces find_artifacts,
find_artifact, find_bitbake_env_lines, get_bitbake_env_lines,
set_bitbake_env_lines and get_line_val calls making API much more clear.

Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>

1 files changed, 0 insertions, 23 deletions

diff --git a/scripts/lib/image/engine.py b/scripts/lib/image/engine.py
index 47950f8d15..92dcc5a4f9 100644
--- a/scripts/lib/image/engine.py
+++ b/scripts/lib/image/engine.py
@@ -60,29 +60,6 @@ def verify_build_env():
     return True
 
 
-def find_artifacts(image_name):
-    """
-    Gather the build artifacts for the current image (the image_name
-    e.g. core-image-minimal) for the current MACHINE set in local.conf
-    """
-    bitbake_env_lines = misc.get_bitbake_env_lines()
-
-    rootfs_dir = kernel_dir = bootimg_dir = native_sysroot = ""
-
-    for line in bitbake_env_lines.split('\n'):
-        if misc.get_line_val(line, "IMAGE_ROOTFS"):
-            rootfs_dir = misc.get_line_val(line, "IMAGE_ROOTFS")
-            continue
-        if misc.get_line_val(line, "DEPLOY_DIR_IMAGE"):
-            kernel_dir = misc.get_line_val(line, "DEPLOY_DIR_IMAGE")
-            continue
-        if misc.get_line_val(line, "STAGING_DIR_NATIVE"):
-            native_sysroot = misc.get_line_val(line, "STAGING_DIR_NATIVE")
-            continue
-
-    return (rootfs_dir, kernel_dir, bootimg_dir, native_sysroot)
-
-
 CANNED_IMAGE_DIR = "lib/image/canned-wks" # relative to scripts
 SCRIPTS_CANNED_IMAGE_DIR = "scripts/" + CANNED_IMAGE_DIR