1 files changed, 62 insertions, 0 deletions
diff --git a/BuildManager/rpmver.py b/BuildManager/rpmver.py
new file mode 100644
index 0000000..cb3269c
--- /dev/null
+++ b/BuildManager/rpmver.py
@@ -0,0 +1,62 @@
+# compare alpha and numeric segments of two versions
+# return 1: first is newer than second
+#        0: first and second are the same version
+#       -1: second is newer than first
+def rpmVersionCompare(e1, v1, r1, e2, v2, r2):
+	if e1 and not e2:
+		return 1
+	if not e1 and e2:
+		return -1
+	if e1 and e2:
+		if e1 < e2:
+			return -1
+		if e1 > e2:
+			return 1
+	rc = rpmvercmp(v1, v2)
+	if rc: return rc
+	return rpmvercmp(r1, r2)
+
+# compare alpha and numeric segments of two versions
+# return 1: a is newer than b
+#        0: a and b are the same version
+#       -1: b is newer than a
+def rpmvercmp(a, b):
+	if a == b:
+		return 0
+	ai = 0
+	bi = 0
+	la = len(a)
+	lb = len(b)
+	while ai < la and bi < lb:
+		while ai < la and not a[ai].isalnum(): ai += 1
+		while bi < lb and not b[bi].isalnum(): bi += 1
+		aj = ai
+		bj = bi
+		if a[aj].isdigit():
+			while aj < la and a[aj].isdigit(): aj += 1
+			while bj < lb and b[bj].isdigit(): bj += 1
+			isnum = 1
+		else:
+			while aj < la and a[aj].isalpha(): aj += 1
+			while bj < lb and b[bj].isalpha(): bj += 1
+			isnum = 0
+		if aj == ai or bj == bi:
+			return -1
+		if isnum:
+			while ai < la and a[ai] == '0': ai += 1
+			while bi < lb and b[bi] == '0': bi += 1
+			if aj-ai > bj-bi: return 1
+			if bj-bi > aj-ai: return -1
+		rc = cmp(a[ai:aj], b[bi:bj])
+		if rc:
+			return rc
+		ai = aj
+		bi = bj
+	if ai == la and bi == lb:
+		return 0
+	if ai == la:
+		return -1
+	else:
+		return 1
+
+# vim:ts=4:sw=4