1 files changed, 84 insertions, 0 deletions
diff --git a/meta-oe/classes/gitpkgv.bbclass b/meta-oe/classes/gitpkgv.bbclass
new file mode 100644
index 0000000000..bedceb9d6e
--- /dev/null
+++ b/meta-oe/classes/gitpkgv.bbclass
@@ -0,0 +1,84 @@
+# gitpkgv.bbclass provides a GITPKGV and GITPKGVTAG variables to be
+# used in PKGV, as described bellow:
+#
+# - GITPKGV which is a sortable version with the format NN+GITHASH, to
+#   be used in PKGV, where
+#
+#   NN equals the total number of revs up to SRCREV
+#   GITHASH is SRCREV's (full) hash
+#
+# - GITPKGVTAG which is the output of 'git describe' allowing for
+#   automatic versioning
+#
+# gitpkgv.bbclass assumes the git repository has been cloned, and
+# contains SRCREV. So ${GITPKGV} and ${GITPKGVTAG} should never be
+# used in PV, only in PKGV.  It can handle SRCREV = ${AUTOREV}, as
+# well as SRCREV = "<some fixed git hash>".
+#
+# WARNING: if upstream repository is always using consistent and
+# sortable tag name scheme you can get sortable version including tag
+# name with ${GITPKGVTAG}, but be aware that ie tag sequence "v1.0,
+# v1.2, xtest, v2.0" will force you to increment PE to get upgradeable
+# path to v2.0 revisions
+#
+# use example:
+#
+# inherit gitpkgv
+#
+# PV = "1.0+gitr${SRCPV}"      # expands to something like 1.0+gitr3+4c1c21d7dbbf93b0df336994524313dfe0d4963b
+# PKGV = "1.0+gitr${GITPKGV}"  # expands also to something like 1.0+gitr31337+4c1c21d7d
+#
+# or
+#
+# inherit gitpkgv
+#
+# PV = "1.0+gitr${SRCPV}" # expands to something like 1.0+gitr3+4c1c21d7dbbf93b0df336994524313dfe0d4963b
+# PKGV = "${GITPKGVTAG}"  # expands to something like 1.0-31337+g4c1c21d
+#                           if there is tag v1.0 before this revision or
+#                           ver1.0-31337+g4c1c21d if there is tag ver1.0
+
+GITPKGV = "${@get_git_pkgv(d, False)}"
+GITPKGVTAG = "${@get_git_pkgv(d, True)}"
+
+def gitpkgv_drop_tag_prefix(version):
+    import re
+    if re.match("v\d", version):
+        return version[1:]
+    else:
+        return version
+
+def get_git_pkgv(d, use_tags):
+	import os
+	import bb
+
+	urls = bb.data.getVar('SRC_URI', d, 1).split()
+
+	for url in urls:
+		(type, host, path, user, pswd, parm) = bb.decodeurl(bb.data.expand(url, d))
+		if type in ['git']:
+
+			gitsrcname = '%s%s' % (host, path.replace('/', '.'))
+			repodir = os.path.join(bb.data.expand('${GITDIR}', d), gitsrcname)
+			if not os.path.exists(repodir):
+				return None
+
+			rev = bb.fetch.get_srcrev(d).split('+')[1]
+
+			cwd = os.getcwd()
+			os.chdir(repodir)
+
+			commits = bb.fetch.runfetchcmd("git rev-list %s -- 2> /dev/null | wc -l" % rev, d, quiet=True).strip()
+
+			if use_tags:
+				try:
+					ver = gitpkgv_drop_tag_prefix(bb.fetch.runfetchcmd("git describe %s 2>/dev/null" % rev, d, quiet=True).strip())
+				except Exception:
+					ver = "0.0-%s-g%s" % (commits, rev[:7])
+			else:
+				ver = "%s+%s" % (commits, rev[:7])
+
+			os.chdir(cwd)
+
+			return ver
+
+	return "0+0"