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Add support for negating a Matcher

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https://github.com/simonmichael/hledger/issues/2054
This commit is contained in:
bobobo1618 2023-09-17 20:03:11 +02:00 committed by Simon Michael
parent bdf292b377
commit 9fb5740045
1 changed files with 16 additions and 4 deletions
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20
hledger-lib/Hledger/Read/RulesReader.hs
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@ -300,7 +300,7 @@ type FieldTemplate = Text
type DateFormat = Text
-- | A prefix for a matcher test, either & or none (implicit or).
data MatcherPrefix = And | None
data MatcherPrefix = And | Not | None
deriving (Show, Eq)
-- | A single test for matching a CSV record, in one way or another.
@ -660,7 +660,7 @@ fieldmatcherp end = do
matcherprefixp :: CsvRulesParser MatcherPrefix
matcherprefixp = do
lift $ dbgparse 8 "trying matcherprefixp"
(char '&' >> lift skipNonNewlineSpaces >> return And) <|> return None
(char '&' >> lift skipNonNewlineSpaces >> return And) <|> (char '!' >> lift skipNonNewlineSpaces >> return Not) <|> return None
csvfieldreferencep :: CsvRulesParser CsvFieldReference
csvfieldreferencep = do
@ -709,6 +709,10 @@ hledgerField = getEffectiveAssignment
hledgerFieldValue :: CsvRules -> CsvRecord -> HledgerFieldName -> Maybe Text
hledgerFieldValue rules record = fmap (renderTemplate rules record) . hledgerField rules record
maybeNegate :: MatcherPrefix -> Bool -> Bool
maybeNegate Not origbool = not origbool
maybeNegate _ origbool = origbool
-- | Given the conversion rules, a CSV record and a hledger field name, find
-- the value template ultimately assigned to this field, if any, by a field
-- assignment at top level or in a conditional block matching this record.
@ -733,7 +737,7 @@ getEffectiveAssignment rules record f = lastMay $ map snd $ assignments
where
-- does this individual matcher match the current csv record ?
matcherMatches :: Matcher -> Bool
matcherMatches (RecordMatcher _ pat) = regexMatchText pat' wholecsvline
matcherMatches (RecordMatcher prefix pat) = maybeNegate prefix origbool
where
pat' = dbg7 "regex" pat
-- A synthetic whole CSV record to match against. Note, this can be
@ -743,10 +747,12 @@ getEffectiveAssignment rules record f = lastMay $ map snd $ assignments
-- - and the field separator is always comma
-- which means that a field containing a comma will look like two fields.
wholecsvline = dbg7 "wholecsvline" $ T.intercalate "," record
matcherMatches (FieldMatcher _ csvfieldref pat) = regexMatchText pat csvfieldvalue
origbool = regexMatchText pat' wholecsvline
matcherMatches (FieldMatcher prefix csvfieldref pat) = maybeNegate prefix origbool
where
-- the value of the referenced CSV field to match against.
csvfieldvalue = dbg7 "csvfieldvalue" $ replaceCsvFieldReference rules record csvfieldref
origbool = regexMatchText pat csvfieldvalue
-- | Group matchers into associative pairs based on prefix, e.g.:
-- A
@ -2977,6 +2983,12 @@ tests_RulesReader = testGroup "RulesReader" [
,let rules = mkrules $ defrules{rcsvfieldindexes=[("csvdate",1)], rconditionalblocks=[CB [FieldMatcher None "%csvdate" $ toRegex' "a"] [("date","%csvdate")]]}
in testCase "conditional" $ getEffectiveAssignment rules ["a","b"] "date" @?= (Just "%csvdate")
,let rules = mkrules $ defrules{rcsvfieldindexes=[("csvdate",1)], rconditionalblocks=[CB [FieldMatcher Not "%csvdate" $ toRegex' "a"] [("date","%csvdate")]]}
in testCase "negated-conditional-false" $ getEffectiveAssignment rules ["a","b"] "date" @?= (Nothing)
,let rules = mkrules $ defrules{rcsvfieldindexes=[("csvdate",1)], rconditionalblocks=[CB [FieldMatcher Not "%csvdate" $ toRegex' "b"] [("date","%csvdate")]]}
in testCase "negated-conditional-true" $ getEffectiveAssignment rules ["a","b"] "date" @?= (Just "%csvdate")
,let rules = mkrules $ defrules{rcsvfieldindexes=[("csvdate",1),("description",2)], rconditionalblocks=[CB [FieldMatcher None "%csvdate" $ toRegex' "a", FieldMatcher None "%description" $ toRegex' "b"] [("date","%csvdate")]]}
in testCase "conditional-with-or-a" $ getEffectiveAssignment rules ["a"] "date" @?= (Just "%csvdate")