[bitbake-devel] [PATCH] bitbake: fetch2: Make SRCREV_FORMAT name substitution safer

Ulf Magnusson ulfalizer at gmail.com
Mon Sep 12 20:16:52 UTC 2016

Given two names "foo" and "foobar" and SRCREV_FORMAT = "foo_foobar",
"foo" might currently get substituted twice. Work around the issue by
sorting the list of names by length and substituting longer names first.

Signed-off-by: Ulf Magnusson <ulfalizer at gmail.com>
 bitbake/lib/bb/fetch2/__init__.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/bitbake/lib/bb/fetch2/__init__.py b/bitbake/lib/bb/fetch2/__init__.py
index 11c75cc..4ca024e 100644
--- a/bitbake/lib/bb/fetch2/__init__.py
+++ b/bitbake/lib/bb/fetch2/__init__.py
@@ -764,7 +764,10 @@ def get_srcrev(d, method_name='sortable_revision'):
     seenautoinc = False
     for scm in scms:
         ud = urldata[scm]
-        for name in ud.names:
+        # Sort the list of names and replace the longest names first. Given two
+        # names "foo" and "foobar", this prevents "foo" being substituted twice
+        # in "foo_foobar" (and "foobar" from not being substituted at all).
+        for name in sorted(ud.names, key=len, reverse=True):
             autoinc, rev = getattr(ud.method, method_name)(ud, d, name)
             seenautoinc = seenautoinc or autoinc
             if len(rev) > 10:

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