[OE-core][PATCH] classes/own-mirror: Add hierarchical premirrors

[Joshua Watt <jpewhacker@gmail.com>]

Reworks own-mirrors.bbclass to allow multiple URLs to be listed in the
SOURCE_MIRROR_URL variable. This allows a hierarchy of premirrors to be
defined where URLs earlier in the list will be tried before the later
ones.

Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
---
 meta/classes/own-mirrors.bbclass | 31 +++++++++++++++++--------------
 1 file changed, 17 insertions(+), 14 deletions(-)

diff --git a/meta/classes/own-mirrors.bbclass b/meta/classes/own-mirrors.bbclass
index ef972740ce..dcb4456222 100644
--- a/meta/classes/own-mirrors.bbclass
+++ b/meta/classes/own-mirrors.bbclass
@@ -1,14 +1,17 @@
-PREMIRRORS:prepend = " \
-cvs://.*/.*     ${SOURCE_MIRROR_URL} \
-svn://.*/.*     ${SOURCE_MIRROR_URL} \
-git://.*/.*     ${SOURCE_MIRROR_URL} \
-gitsm://.*/.*   ${SOURCE_MIRROR_URL} \
-hg://.*/.*      ${SOURCE_MIRROR_URL} \
-bzr://.*/.*     ${SOURCE_MIRROR_URL} \
-p4://.*/.*      ${SOURCE_MIRROR_URL} \
-osc://.*/.*     ${SOURCE_MIRROR_URL} \
-https?://.*/.*  ${SOURCE_MIRROR_URL} \
-ftp://.*/.*     ${SOURCE_MIRROR_URL} \
-npm://.*/?.*    ${SOURCE_MIRROR_URL} \
-s3://.*/.*      ${SOURCE_MIRROR_URL} \
-"
+python() {
+    for m in reversed(d.getVar("SOURCE_MIRROR_URL").split()):
+        d.prependVar("PREMIRRORS", " \
+cvs://.*/.*     {m} \
+svn://.*/.*     {m} \
+git://.*/.*     {m} \
+gitsm://.*/.*   {m} \
+hg://.*/.*      {m} \
+bzr://.*/.*     {m} \
+p4://.*/.*      {m} \
+osc://.*/.*     {m} \
+https?://.*/.*  {m} \
+ftp://.*/.*     {m} \
+npm://.*/?.*    {m} \
+s3://.*/.*      {m} \
+".format(m=m))
+}
-- 
2.33.0