[libxml2]Add libxml2 library

libxml2/python/tests/regexp.py

@@ -0,0 +1,43 @@
+#!/usr/bin/env python3
+import sys
+import setup_test
+import libxml2
+
+# Memory debug specific
+libxml2.debugMemory(1)
+
+
+def check_regex(regex, inside, outside):
+    re = libxml2.regexpCompile(regex)
+    for c in inside:
+        if re.regexpExec(c) != 1:
+            print("error checking inside", repr(regex), repr(c))
+            sys.exit(1)
+    for c in outside:
+        if re.regexpExec(c) != 0:
+            print("error checking outside", repr(regex), repr(c))
+            sys.exit(1)
+    if re.regexpIsDeterminist() != 1:
+        print("error checking determinism")
+        sys.exit(1)
+    del re
+
+
+check_regex("a|b", "ab", ["ab", ""])
+# https://gitlab.gnome.org/GNOME/libxml2/-/issues/1086
+check_regex(r"[\t-\r]", "\t\n\r", ["a", "(", ""])
+check_regex("[\\t-\\r]", "\t\n\r", ["a", "(", ""])
+check_regex(r"[\[-\]]", "[]\\", "Z^")
+check_regex(r"[\*-/]", "*+,-./", "()0")
+# Non-standard escape sequences
+check_regex(r"[\u0041-\u005A]", "ABCMYZ", ["a", "0", "[", ""])
+check_regex(r"[\u0009\u0061-\u007A]", "\tabcmyz", ["A", "0", "{", "", "\n"])
+check_regex(r"[\!-\%]", '!"#$%', ["&", " ", "a", ""])
+check_regex(r"[\:-\>]", ':;<=>',  ["?", "9", "@", ""])
+
+# Memory debug specific
+libxml2.cleanupParser()
+if libxml2.debugMemory(1) == 0:
+    print("OK")
+else:
+    print("Memory leak %d bytes" % (libxml2.debugMemory(1)))