lynxis lazus has uploaded this change for review.

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osmo_interact: improve vty transcript language by a regular rexex

Currently the transcript language understand 3 different tokens:
... (ignore all lines until the following line matches)
... !REGEX (ignore all lines except REXEX)

But to support osmo-stp with different compile options, the
vty help is indented with different amount of spaces depending on the compile options.
To support those add a regular regex using the prefix !r!

E.g.
OsmoSTP(config-cs7-as)# ?
-  description       Save human-readable description of the object
vs
+  description               Save human-readable description of the object

Change-Id: Iadcd7a8c3677548a6405e098fe53d0614ef2012c
---
M osmopy/osmo_interact/common.py
1 file changed, 15 insertions(+), 2 deletions(-)

git pull ssh://gerrit.osmocom.org:29418/python/osmo-python-tests refs/changes/62/42762/1

diff --git a/osmopy/osmo_interact/common.py b/osmopy/osmo_interact/common.py
index 87eca6a..dd62b8a 100644
--- a/osmopy/osmo_interact/common.py
+++ b/osmopy/osmo_interact/common.py
@@ -218,14 +218,27 @@
         - If an 'expect' line is '... !regex', it matches any number of
           lines like '...', but the given regex must not match any of those
           lines.
+        - If the line starts with '!r!' following the regex, but a exact match has priority
 
         Return 'True' on match, or a string describing the mismatch.
         '''
-        def match_line(expect_line, got_line):
-            return expect_line == got_line
 
         ANY = '...'
         ANY_EXCEPT = '... !'
+        REGEX = '!r!'
+
+        def match_line(expect_line, got_line):
+            if expect_line == got_line:
+                return True
+
+            # try to parse the expect_line as regex
+            if expect_line.startswith(REGEX):
+                try:
+                    if re.compile(expect_line[len(REGEX):]).match(got_line):
+                        return True
+                except:
+                    pass
+            return False
 
         e = 0
         g = 0

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