git.iko.soy/typeable/dom-parser
on master help sign in
swap
82e2fef39 ahead, 0 behind
.travis.yml+7−5
since splitsnapshots
unifiedsplit
@@ -4,6 +4,12 @@ sudo: false
4# Do not choose a language; we provide our own build tools.
4# Do not choose a language; we provide our own build tools.
5language: generic
5language: generic
6
6
7+env:
8+ - STACK_YAML=stack.yaml
9+ - STACK_YAML=ghc-802.yaml
10+ - STACK_YAML=ghc-822.yaml
11+ - STACK_YAML=ghc-841.yaml
12+
7# Caching so the next build will be fast too.
13# Caching so the next build will be fast too.
8cache:
14cache:
9 directories:
15 directories:
@@ -21,10 +27,6 @@ before_install:
21- export PATH=$HOME/.local/bin:$PATH
27- export PATH=$HOME/.local/bin:$PATH
22- travis_retry curl -L https://www.stackage.org/stack/linux-x86_64 | tar xz --wildcards --strip-components=1 -C ~/.local/bin '*/stack'
28- travis_retry curl -L https://www.stackage.org/stack/linux-x86_64 | tar xz --wildcards --strip-components=1 -C ~/.local/bin '*/stack'
23
29
24−install:
25−# Build dependencies
26−- stack --no-terminal --install-ghc build --only-dependencies
27−
28script:
30script:
29# Build the package, its tests, and its docs and run the tests
31# Build the package, its tests, and its docs and run the tests
30−- stack --no-terminal test --haddock --no-haddock-deps
32+- stack --no-terminal --install-ghc test --haddock --no-haddock-deps
CHANGELOG.md+44
@@ -1,10 +1,54 @@
1# CHANGELOG
1# CHANGELOG
2
2
3+## HEAD
4+
5+## 3.2.0
6+
7+### Added
8+
9+* Text.XML.Soap module with XmlEnvelope stuff in it.
10+* GHC 9 compatibility.
11+
12+### Removed
13+
14+* Old stackage files.
15+
16+## 3.1.0
17+
18+### Added
19+
20+* Additional builds with GHC 8.0.2 and 8.2.1
21+* Compatibility with GHC 8.4.1
22+
23+## 3.0.0
24+
25+* GHC 8 compatible release
26+
27+### Removed
28+
29+* `open-union` dependency
30+
31+## 2.0.0
32+
33+### Added
34+
35+* `NameMatcher` and `ElemMatcher` as more flexible mechanisms for
36+ matching names and elements instead of just matching by name.
37+* Class `FromAttribute` and some default instances
38+
39+### Changed
40+
41+* `DomTraversable` renamed to `Buildable`
42+* Combinators use `NameMatcher` and `ElemMatcher`
43+* Documentation improved
44+
3## 1.0.0
45## 1.0.0
46+
4* Added support for parsing attributes
47* Added support for parsing attributes
5* Changed public interface for 'parseContent'
48* Changed public interface for 'parseContent'
6* Added useful functions
49* Added useful functions
7* Dropped unnecessary dependency from shakespeare
50* Dropped unnecessary dependency from shakespeare
8
51
9## 0.1.0
52## 0.1.0
53+
10* Public release
54* Public release
README.mdnew file+5
@@ -0,0 +1,5 @@
1+# dom-parser
2+
3+[![Build Status](https://travis-ci.org/typeable/dom-parser.svg?branch=master)](https://travis-ci.org/typeable/dom-parser)
4+
5+Simple monadic DOM parser
dom-parser.cabal+16−11
@@ -1,5 +1,5 @@
1name: dom-parser
1name: dom-parser
2−version: 1.0.0
2+version: 3.2.0
3synopsis: Simple monadic DOM parser
3synopsis: Simple monadic DOM parser
4license: MIT
4license: MIT
5license-file: LICENSE
5license-file: LICENSE
@@ -7,12 +7,13 @@ author: Typeable.io contributors
7maintainer: makeit@typeable.io
7maintainer: makeit@typeable.io
8category: XML
8category: XML
9build-type: Simple
9build-type: Simple
10−extra-source-files: CHANGELOG.md
11cabal-version: >=1.10
10cabal-version: >=1.10
12−
13−extra-source-files: CHANGELOG.md
14−
15homepage: https://github.com/typeable/dom-parser
11homepage: https://github.com/typeable/dom-parser
12+tested-with: GHC == 9.2.7
13+ , GHC == 9.4.8
14+ , GHC == 9.6.3
15+extra-source-files: CHANGELOG.md
16+ , README.md
16
17
17source-repository head
18source-repository head
18 type: git
19 type: git
@@ -43,22 +44,26 @@ library
43 , TypeFamilies
44 , TypeFamilies
44 , TypeOperators
45 , TypeOperators
45 , UndecidableInstances
46 , UndecidableInstances
46− build-depends: base >= 4.7 && < 5
47+ build-depends: base >= 4.11 && < 5
48+ , case-insensitive
47 , containers
49 , containers
48 , lens
50 , lens
49− , mtl
51+ , mtl < 2.3 || > 2.3
50− , open-union >= 0.2
51 , scientific
52 , scientific
52− , semigroups
53 , text
53 , text
54 , transformers
54 , transformers
55− , type-fun
56 , xml-conduit
55 , xml-conduit
56+ , xml-conduit-writer
57 , xml-lens
57 , xml-lens
58 exposed-modules: Text.XML.DOM.Parser
58 exposed-modules: Text.XML.DOM.Parser
59− , Text.XML.DOM.Parser.Class
59+ , Text.XML.DOM.Parser.Attributes
60+ , Text.XML.DOM.Parser.Buildable
60 , Text.XML.DOM.Parser.Combinators
61 , Text.XML.DOM.Parser.Combinators
62+ , Text.XML.DOM.Parser.Content
63+ , Text.XML.DOM.Parser.FromAttribute
64+ , Text.XML.DOM.Parser.FromDom
61 , Text.XML.DOM.Parser.Types
65 , Text.XML.DOM.Parser.Types
66+ , Text.XML.Soap
62
67
63test-suite test
68test-suite test
64 type: exitcode-stdio-1.0
69 type: exitcode-stdio-1.0
ghc-963.yamlnew file+7
@@ -0,0 +1,7 @@
1+resolver: lts-22.6
2+
3+extra-deps:
4+ - xml-conduit-writer-0.1.1.5
5+
6+nix:
7+ packages: [zlib]
src/Text/XML/DOM/Parser.hs+10−2
@@ -1,9 +1,17 @@
1module Text.XML.DOM.Parser
1module Text.XML.DOM.Parser
2− ( module Text.XML.DOM.Parser.Class
2+ ( module Text.XML.DOM.Parser.Attributes
3+ , module Text.XML.DOM.Parser.Buildable
3 , module Text.XML.DOM.Parser.Combinators
4 , module Text.XML.DOM.Parser.Combinators
5+ , module Text.XML.DOM.Parser.Content
6+ , module Text.XML.DOM.Parser.FromAttribute
7+ , module Text.XML.DOM.Parser.FromDom
4 , module Text.XML.DOM.Parser.Types
8 , module Text.XML.DOM.Parser.Types
5 ) where
9 ) where
6
10
7−import Text.XML.DOM.Parser.Class
11+import Text.XML.DOM.Parser.Attributes
12+import Text.XML.DOM.Parser.Buildable
8import Text.XML.DOM.Parser.Combinators
13import Text.XML.DOM.Parser.Combinators
14+import Text.XML.DOM.Parser.Content
15+import Text.XML.DOM.Parser.FromAttribute
16+import Text.XML.DOM.Parser.FromDom
9import Text.XML.DOM.Parser.Types
17import Text.XML.DOM.Parser.Types
src/Text/XML/DOM/Parser/Attributes.hsnew file+64
@@ -0,0 +1,64 @@
1+module Text.XML.DOM.Parser.Attributes
2+ ( parseAttribute
3+ , parseAttributeMaybe
4+ , getCurrentAttributes
5+ , getCurrentAttribute
6+ ) where
7+
8+import Control.Lens
9+import Data.Map.Strict as M
10+import Data.Text as T
11+import Text.XML.DOM.Parser.Types
12+import Text.XML.Lens
13+
14+-- | Parses attribute with given name, throws error if attribute is not found.
15+--
16+-- @since 1.0.0
17+parseAttribute
18+ :: (Monad m)
19+ => NameMatcher
20+ -- ^ Attribute name
21+ -> (Text -> Either Text a)
22+ -- ^ Attribute content parser
23+ -> DomParserT Identity m a
24+parseAttribute attrName parser =
25+ parseAttributeMaybe attrName parser >>= \case
26+ Nothing -> throwParserError $ PEAttributeNotFound attrName
27+ Just a -> return a
28+
29+-- | Parses attribute with given name. Returns Nothing if attribute is
30+-- not found.
31+--
32+-- @since 1.0.0
33+parseAttributeMaybe
34+ :: (Monad m)
35+ => NameMatcher
36+ -- ^ Attribute name
37+ -> (Text -> Either Text a)
38+ -- ^ Attribute content parser
39+ -> DomParserT Identity m (Maybe a)
40+parseAttributeMaybe attrName parser =
41+ getCurrentAttribute attrName >>= \case
42+ Nothing -> return Nothing
43+ Just aval -> case parser aval of
44+ Left err -> throwParserError $ PEAttributeWrongFormat attrName err
45+ Right a -> return $ Just a
46+
47+-- | Retuns map of attributes of current element
48+--
49+-- @since 1.0.0
50+getCurrentAttributes
51+ :: (Monad m)
52+ => DomParserT Identity m (M.Map Name Text)
53+getCurrentAttributes = view $ pdElements . to runIdentity . attrs
54+
55+-- | Returns element with given name or 'Nothing'
56+--
57+-- @since 1.0.0
58+getCurrentAttribute
59+ :: (Monad m)
60+ => NameMatcher
61+ -> DomParserT Identity m (Maybe Text)
62+getCurrentAttribute attrName
63+ = preview $ pdElements . to runIdentity . attrs . to M.toList
64+ . traversed . filtered (views _1 (attrName ^. nmMatch)) . _2
src/Text/XML/DOM/Parser/Buildable.hsnew file+26
@@ -0,0 +1,26 @@
1+module Text.XML.DOM.Parser.Buildable
2+ ( Buildable(..)
3+ ) where
4+
5+import Data.Functor.Identity
6+import Data.List.NonEmpty as NE
7+import Data.Maybe
8+
9+-- | Class of traversable functors which may be constructed from list
10+class Traversable f => Buildable f where
11+ -- | If method return Nothing this means we can not build
12+ -- traversable from given list. In this case 'inFilteredTrav' should
13+ -- fail traversing.
14+ build :: [a] -> Maybe (f a)
15+
16+instance Buildable Identity where
17+ build = fmap Identity . listToMaybe
18+
19+instance Buildable [] where
20+ build = Just
21+
22+instance Buildable Maybe where
23+ build = Just . listToMaybe
24+
25+instance Buildable NonEmpty where
26+ build = NE.nonEmpty
src/Text/XML/DOM/Parser/Combinators.hs+50−181
@@ -2,7 +2,7 @@ module Text.XML.DOM.Parser.Combinators
2 ( -- * Generic combinators to traverse descendants
2 ( -- * Generic combinators to traverse descendants
3 traverseElems
3 traverseElems
4 , inFilteredTrav
4 , inFilteredTrav
5− -- * Using 'DomTraversable'
5+ -- * Using 'Buildable'
6 , inElemTrav
6 , inElemTrav
7 , inElem
7 , inElem
8 , inElemAll
8 , inElemAll
@@ -15,47 +15,30 @@ module Text.XML.DOM.Parser.Combinators
15 , ignoreElem
15 , ignoreElem
16 , ignoreEmpty
16 , ignoreEmpty
17 , ignoreBlank
17 , ignoreBlank
18− -- * Getting current element's properties
19− , getCurrentName
20− , getCurrentContent
21− , getCurrentAttributes
22− , getCurrentAttribute
23− -- * Current element's checks
24− , checkCurrentName
25− -- * Parsing element's content
26− , parseContent
27− , readContent
28− , maybeReadContent
29− -- * Parsing attributes
30− , parseAttribute
31− , parseAttributeMaybe
32 ) where
18 ) where
33
19
34−import Control.Lens
20+import Control.Lens
35−import Control.Monad.Except
36−import Control.Monad.Reader
21+import Control.Monad.Reader
37−import Data.List.NonEmpty (NonEmpty(..))
22+import Data.Foldable as F
38−import qualified Data.Map.Strict as M
23+import Data.List as L
39−import Data.Monoid
24+import Data.List.NonEmpty (NonEmpty(..))
40−import Data.Text (Text)
41−import qualified Data.Text as T
25+import Data.Text as T
42−import Data.Traversable
26+import Data.Traversable
43−import Data.Typeable
27+import Text.XML
44−import Text.Read
45−import Text.XML
28+import Text.XML.DOM.Parser.Buildable
46−import Text.XML.DOM.Parser.Types
29+import Text.XML.DOM.Parser.Types
47−import Text.XML.Lens
30+import Text.XML.Lens
48
31
49
32
50−-- | Generic function to traverse arbitrary inner cursors.
33+-- | Generic function to traverse arbitrary inner elements.
51traverseElems
34traverseElems
52 :: (Monad m, Foldable g, Traversable f)
35 :: (Monad m, Foldable g, Traversable f)
53 => ([Element] -> DomParserT g m (f (DomPath, Element)))
36 => ([Element] -> DomParserT g m (f (DomPath, Element)))
54 -- ^ Takes list of current elements and returns container with
37 -- ^ Takes list of current elements and returns container with
55− -- pairs of subpath (relatively to current element) and element
38+ -- pairs of subpath (relatively to current elements) and element
56 -- to run parser in
39 -- to run parser in
57 -> DomParserT Identity m a
40 -> DomParserT Identity m a
58− -- ^ Parser will be runned for each element found in traversable
41+ -- ^ Parser to run for each element found in traversable 'f'
59 -> DomParserT g m (f a)
42 -> DomParserT g m (f a)
60traverseElems trav parser = do
43traverseElems trav parser = do
61 pd <- ask
44 pd <- ask
@@ -65,68 +48,73 @@ traverseElems trav parser = do
65 newpd = ParserData
48 newpd = ParserData
66 { _pdElements = Identity e
49 { _pdElements = Identity e
67 , _pdPath = pd ^. pdPath <> subpath }
50 , _pdPath = pd ^. pdPath <> subpath }
68− -- type of reader has been changed, local won't work here
51+ lift $ runReaderT parser newpd
69− magnify (to $ const newpd) parser
70
52
71−-- | Takes function filtering
53+-- | Traverses elements located in same path using filtering function
72inFilteredTrav
54inFilteredTrav
73− :: (Monad m, Foldable g, DomTraversable f)
55+ :: (Monad m, Foldable g, Buildable f)
74 => ([Element] -> (DomPath, [Element]))
56 => ([Element] -> (DomPath, [Element]))
75− -- ^ Function returning some filtered elements with path suffixes which will
57+ -- ^ Takes list of current elements and returns some descendants
76− -- be appended to parser's state
58+ -- subset and path this descendants located at. Path is should be
59+ -- same for all descendants and required for error message
77 -> DomParserT Identity m a
60 -> DomParserT Identity m a
78 -> DomParserT g m (f a)
61 -> DomParserT g m (f a)
79inFilteredTrav deeper = traverseElems trav
62inFilteredTrav deeper = traverseElems trav
80 where
63 where
81 trav e = do
64 trav e = do
82 let (path, elems) = deeper e
65 let (path, elems) = deeper e
83− case buildDomTraversable elems of
66+ case build elems of
84 Nothing -> throwParserError $ PENotFound . (<> path)
67 Nothing -> throwParserError $ PENotFound . (<> path)
85 Just tr -> return $ fmap (path,) tr
68 Just tr -> return $ fmap (path,) tr
86
69
70+-- | Runs parser arbitrary times, depending on 'Buildable' instance of
71+-- 'f'. For example if 'f' becomes 'NonEmpty' then 'inElemTrav' finds
72+-- @one or more@ elements matched by given 'ElemMatcher' and run
73+-- parser in each found element, then returns @NonEmpty a@ of results.
87inElemTrav
74inElemTrav
88− :: (Monad m, Foldable g, DomTraversable f)
75+ :: (Monad m, Foldable g, Buildable f)
89− => Text
76+ => ElemMatcher -- ^ Tag(s) matcher to traverse in
90 -> DomParserT Identity m a
77 -> DomParserT Identity m a
91 -> DomParserT g m (f a)
78 -> DomParserT g m (f a)
92inElemTrav n = inFilteredTrav deeper
79inElemTrav n = inFilteredTrav deeper
93 where
80 where
81+ elemsFold = folded . nodes . folded . _Element . elMatch n
94− deeper = (DomPath [n],) . toListOf (folded . nodes . folded . _Element . ell n)
82+ deeper = (DomPath [_emShow n],) . toListOf elemsFold
95
83
96−-- | Runs parser inside first children element with given name
84+-- | Runs parser inside first children element matched by macher
97inElem
85inElem
98 :: (Monad m, Foldable g)
86 :: (Monad m, Foldable g)
99− => Text
87+ => ElemMatcher
100 -> DomParserT Identity m a
88 -> DomParserT Identity m a
101 -> DomParserT g m a
89 -> DomParserT g m a
102inElem n = fmap runIdentity . inElemTrav n
90inElem n = fmap runIdentity . inElemTrav n
103
91
104inElemAll
92inElemAll
105 :: (Monad m, Foldable g)
93 :: (Monad m, Foldable g)
106− => Text
94+ => ElemMatcher
107 -> DomParserT Identity m a
95 -> DomParserT Identity m a
108 -> DomParserT g m [a]
96 -> DomParserT g m [a]
109inElemAll = inElemTrav
97inElemAll = inElemTrav
110
98
111inElemMay
99inElemMay
112 :: (Monad m, Foldable g)
100 :: (Monad m, Foldable g)
113− => Text
101+ => ElemMatcher
114 -> DomParserT Identity m a
102 -> DomParserT Identity m a
115 -> DomParserT g m (Maybe a)
103 -> DomParserT g m (Maybe a)
116inElemMay = inElemTrav
104inElemMay = inElemTrav
117
105
118inElemNe
106inElemNe
119 :: (Monad m, Foldable g)
107 :: (Monad m, Foldable g)
120− => Text
108+ => ElemMatcher
121 -> DomParserT Identity m a
109 -> DomParserT Identity m a
122 -> DomParserT g m (NonEmpty a)
110 -> DomParserT g m (NonEmpty a)
123inElemNe = inElemTrav
111inElemNe = inElemTrav
124
112
125{- | Dive given parser's current tags set into the given path. The @divePath
113{- | Dive given parser's current tags set into the given path. The @divePath
126−["a", "b"]@ differs from @inElem "a" . inElem "b"@. Namely the first variant
114+["a", "b"]@ differs from @inElem "a" $ inElem "b"@. Namely the first variant
127will not fail if occured tag "a" which does not contains tag "b". This
115will not fail if occured tag "a" which does not contains tag "b". This
128behaviour is desireable when you dont want to parse whole XML and just want
116behaviour is desireable when you dont want to parse whole XML and just want
129−to pull tags in some path. The other difference is in traversing inner
117+to pull tags located in some path. The other difference is in traversing inner
130elements. Consider this code
118elements. Consider this code
131
119
132@
120@
@@ -144,29 +132,34 @@ which translates like: @a > b > c > fromDom@
144As you can see, inElem always takes first element and runs inner parser in this
132As you can see, inElem always takes first element and runs inner parser in this
145single element, unlike 'divePath' which runs inner parser @in all@ descendants
133single element, unlike 'divePath' which runs inner parser @in all@ descendants
146in given path.
134in given path.
135+
136+Note also that 'divePath' takes parser parameterized by @[]@ not by
137+'Identity'. This because when you dive using some path you will get a
138+list of found elements and all these elements will be @current@ for
139+parser.
147-}
140-}
148
141
149divePath
142divePath
150 :: forall m g a
143 :: forall m g a
151 . (Monad m, Foldable g)
144 . (Monad m, Foldable g)
152− => DomPath
145+ => [ElemMatcher]
153 -> DomParserT [] m a
146 -> DomParserT [] m a
154 -> DomParserT g m a
147 -> DomParserT g m a
155divePath path = magnify $ to modElems
148divePath path = magnify $ to modElems
156 where
149 where
157 modElems
150 modElems
158 = over pdElements (toListOf $ folded . diver)
151 = over pdElements (toListOf $ folded . diver)
159− . over pdPath (<> path)
152+ . over pdPath (<> DomPath (L.map _emShow path))
160 diver :: Fold Element Element
153 diver :: Fold Element Element
161− diver = foldr (.) id $ map toDive $ unDomPath path
154+ diver = F.foldr (.) id $ L.map toDive path
162− toDive n = nodes . folded . _Element . ell n
155+ toDive n = nodes . folded . _Element . elMatch n
163
156
164diveElem
157diveElem
165 :: (Monad m, Foldable g)
158 :: (Monad m, Foldable g)
166− => Text
159+ => ElemMatcher
167 -> DomParserT [] m a
160 -> DomParserT [] m a
168 -> DomParserT g m a
161 -> DomParserT g m a
169−diveElem p = divePath $ DomPath [p]
162+diveElem p = divePath [p]
170
163
171-- | Ignore arbitrary current element if it conforms to predicate.
164-- | Ignore arbitrary current element if it conforms to predicate.
172ignoreElem
165ignoreElem
@@ -190,7 +183,7 @@ ignoreEmpty
190 -> DomParserT Identity m (Maybe a)
183 -> DomParserT Identity m (Maybe a)
191ignoreEmpty = ignoreElem test
184ignoreEmpty = ignoreElem test
192 where
185 where
193− test e = null $ e ^. nodes
186+ test e = L.null $ e ^. nodes
194
187
195-- | If all current elements contains blank content, or contains nothing at all
188-- | If all current elements contains blank content, or contains nothing at all
196-- , then returns Nothing, else runs parser.
189-- , then returns Nothing, else runs parser.
@@ -204,130 +197,6 @@ ignoreBlank = ignoreElem test
204 let
197 let
205 elems = e ^.. nodes . folded . _Element
198 elems = e ^.. nodes . folded . _Element
206 cont = mconcat $ e ^.. nodes . folded . _Content
199 cont = mconcat $ e ^.. nodes . folded . _Content
207− in if | not $ null elems -> False
200+ in if | not $ L.null elems -> False
208 | T.null $ T.strip cont -> True
201 | T.null $ T.strip cont -> True
209 | otherwise -> False
202 | otherwise -> False
210−
211−-- | Returns name of current element.
212−--
213−-- @since 1.0.0
214−getCurrentName :: (Monad m) => DomParserT Identity m Text
215−getCurrentName = view $ pdElements . to runIdentity . localName
216−
217−-- | If name of current tag differs from first argument throws 'PENotFound' with
218−-- tag name replaced in last path's segment. Useful for checking root
219−-- document's element name.
220−checkCurrentName
221− :: (Monad m)
222− => Text
223− -> DomParserT Identity m ()
224−checkCurrentName n = do
225− cn <- getCurrentName
226− unless (cn == n) $ do
227− p <- view pdPath
228− let pinit = if null (unDomPath p) then [] else init $ unDomPath p
229− throwError $ ParserErrors [PENotFound $ DomPath $ pinit ++ [n]]
230− return ()
231−
232−-- | Get current content. If current element contains no content or
233−-- have inner elements then Nothing returned
234−--
235−-- @since 1.0.0
236−getCurrentContent :: (Monad m) => DomParserT Identity m (Maybe Text)
237−getCurrentContent = do
238− nds <- view $ pdElements . to runIdentity . nodes
239− let
240− els :: [Element]
241− els = nds ^.. folded . _Element
242− conts :: [Text]
243− conts = nds ^.. folded . _Content
244− return $ if
245− | not $ null els -> Nothing
246− | null conts -> Nothing
247− | otherwise -> Just $ mconcat conts
248−
249−-- | Parses content inside current tag. It expects current element set
250−-- consists of exactly ONE element. If current element does not
251−-- contains content or have other elements as childs then throws error
252−parseContent
253− :: (Monad m)
254− => (Text -> Either Text a)
255− -- ^ Content parser, return error msg if value is not parsed
256− -> DomParserT Identity m a
257−parseContent parse = getCurrentContent >>= \case
258− Nothing -> throwParserError PEContentNotFound
259− Just c -> case parse c of
260− Left e -> throwParserError $ PEWrongFormat e
261− Right a -> return a
262−
263−-- | If reader returns 'Nothing' then resulting function returns 'Left
264−-- "error message"'
265−--
266−-- @since 1.0.0
267−maybeReadContent
268− :: forall a
269− . (Typeable a)
270− => (Text -> Maybe a)
271− -- ^ Content or attribute reader
272− -> Text
273− -- ^ Content or attribute value
274− -> Either Text a
275−maybeReadContent f t = maybe (Left msg) Right $ f t
276− where
277− msg = "Not readable " <> n <> ": " <> t
278− n = T.pack $ show $ typeRep (Proxy :: Proxy a)
279−
280−-- | Tries to read given text to value using 'Read'. Useful to use
281−-- with 'parseContent' and 'parseAttribute'
282−readContent
283− :: (Read a, Typeable a)
284− => Text
285− -> Either Text a
286−readContent = maybeReadContent $ readMaybe . T.unpack . T.strip
287−
288−-- | Retuns map of attributes of current element
289−--
290−-- @since 1.0.0
291−getCurrentAttributes :: (Monad m) => DomParserT Identity m (M.Map Name Text)
292−getCurrentAttributes = view $ pdElements . to runIdentity . attrs
293−
294−-- | Returns element with given name or 'Nothing'
295−--
296−-- @since 1.0.0
297−getCurrentAttribute :: (Monad m) => Text -> DomParserT Identity m (Maybe Text)
298−getCurrentAttribute attrName'
299− = preview $ pdElements . to runIdentity . attr attrName
300− where
301− attrName = Name attrName' Nothing Nothing
302−
303−-- | Parses attribute with given name, throws error if attribute is not found.
304−--
305−-- @since 1.0.0
306−parseAttribute
307− :: (Monad m)
308− => Text
309− -- ^ Attribute name
310− -> (Text -> Either Text a)
311− -- ^ Attribute content parser
312− -> DomParserT Identity m a
313−parseAttribute attrName parser =
314− parseAttributeMaybe attrName parser >>= \case
315− Nothing -> throwParserError $ PEAttributeNotFound attrName
316− Just a -> return a
317−
318−-- | Parses attribute with given name.
319−--
320−-- @since 1.0.0
321−parseAttributeMaybe
322− :: (Monad m)
323− => Text
324− -- ^ Attribute name
325− -> (Text -> Either Text a)
326− -- ^ Attribute content parser
327− -> DomParserT Identity m (Maybe a)
328−parseAttributeMaybe attrName parser =
329− getCurrentAttribute attrName >>= \case
330− Nothing -> return Nothing
331− Just aval -> case parser aval of
332− Left err -> throwParserError $ PEAttributeWrongFormat attrName err
333− Right a -> return $ Just a
src/Text/XML/DOM/Parser/Content.hsnew file+129
@@ -0,0 +1,129 @@
1+module Text.XML.DOM.Parser.Content
2+ (
3+ -- * Parsing element's content
4+ parseContent
5+ -- * Getting current element's properties
6+ , getCurrentName
7+ , getCurrentContent
8+ , checkCurrentName
9+ -- * Internal
10+ , maybeReadContent
11+ , readContent
12+ , readBool
13+ , readChar
14+ ) where
15+
16+import Control.Lens
17+import Control.Monad
18+import Control.Monad.Except
19+import Data.List as L
20+import Data.Monoid
21+import Data.Text as T
22+import Data.Typeable
23+import Prelude as P
24+import Text.Read
25+import Text.XML.DOM.Parser.Types
26+import Text.XML.Lens
27+
28+
29+-- | Parses content inside current tag. It expects current element set
30+-- consists of exactly ONE element.
31+parseContent
32+ :: (Monad m)
33+ => (Text -> Either Text a)
34+ -- ^ Content parser, return error msg if value is not parsed
35+ -> DomParserT Identity m a
36+parseContent parse = getCurrentContent >>= \case
37+ Nothing -> throwParserError PEContentNotFound
38+ Just c -> case parse c of
39+ Left e -> throwParserError $ PEContentWrongFormat e
40+ Right a -> return a
41+
42+
43+-- | Returns name of current element.
44+--
45+-- @since 1.0.0
46+getCurrentName :: (Monad m) => DomParserT Identity m Name
47+getCurrentName = view $ pdElements . to runIdentity . name
48+
49+-- | If name of current tag differs from first argument throws 'PENotFound' with
50+-- tag name replaced in last path's segment. Useful for checking root
51+-- document's element name.
52+checkCurrentName
53+ :: (Monad m)
54+ => NameMatcher
55+ -> DomParserT Identity m ()
56+checkCurrentName n = do
57+ cn <- getCurrentName
58+ unless ((n ^. nmMatch) cn) $ do
59+ p <- view pdPath
60+ let pinit = if L.null (unDomPath p) then [] else L.init $ unDomPath p
61+ throwError $ ParserErrors [PENotFound $ DomPath $ pinit ++ [_nmShow n]]
62+ return ()
63+
64+-- | Get current content. If current element contains no content or
65+-- have inner elements then Nothing returned
66+--
67+-- @since 1.0.0
68+getCurrentContent :: (Monad m) => DomParserT Identity m (Maybe Text)
69+getCurrentContent = do
70+ nds <- view $ pdElements . to runIdentity . nodes
71+ let
72+ els :: [Element]
73+ els = nds ^.. folded . _Element
74+ conts :: [Text]
75+ conts = nds ^.. folded . _Content
76+ return $ if
77+ | not $ L.null els -> Nothing
78+ | L.null conts -> Nothing
79+ | otherwise -> Just $ mconcat conts
80+
81+-- | If reader returns 'Nothing' then resulting function returns 'Left
82+-- "error message"'. 'Typeable' is used for generating usefull error
83+-- message.
84+--
85+-- @since 1.0.0
86+maybeReadContent
87+ :: forall a
88+ . (Typeable a)
89+ => (Text -> Maybe a)
90+ -- ^ Content or attribute reader
91+ -> Text
92+ -- ^ Content or attribute value
93+ -> Either Text a
94+maybeReadContent f t = maybe (Left msg) Right $ f t
95+ where
96+ msg = "Not readable " <> n <> ": " <> t
97+ n = T.pack $ P.show $ typeRep (Proxy :: Proxy a)
98+
99+
100+-- | Tries to read given text to value using 'Read'. Useful to use
101+-- with 'parseContent' and 'parseAttribute'. Content is stripped
102+-- before reading.
103+readContent
104+ :: (Read a, Typeable a)
105+ => Text
106+ -> Either Text a
107+readContent = maybeReadContent $ readMaybe . T.unpack . T.strip
108+
109+
110+-- | @since 1.0.0
111+readBool :: Text -> Either Text Bool
112+readBool t =
113+ let
114+ lowt = T.toLower $ T.strip t
115+ tvals = ["y", "yes", "t", "true", "1"]
116+ fvals = ["n", "no", "f", "false", "0"]
117+ in if
118+ | lowt `L.elem` tvals -> Right True
119+ | lowt `L.elem` fvals -> Right False
120+ | otherwise ->
121+ Left $ "Could not read " <> t <> " as Bool"
122+
123+-- | Expects text to be single character
124+--
125+-- @since 1.0.0
126+readChar :: Text -> Either Text Char
127+readChar t = case T.unpack $ T.strip t of
128+ [c] -> Right c
129+ _ -> Left "Should have exactly one non-blank character"
src/Text/XML/DOM/Parser/FromAttribute.hsnew file+112
@@ -0,0 +1,112 @@
1+module Text.XML.DOM.Parser.FromAttribute
2+ ( -- * FromAttribute
3+ FromAttribute(..)
4+ , proxyFromAttribute
5+ -- * Explicit methods
6+ , textFromAttribute
7+ , stringFromAttribute
8+ , charFromAttribute
9+ , intFromAttribute
10+ , integerFromAttribute
11+ , doubleFromAttribute
12+ , fixedFromAttribute
13+ , boolFromAttribute
14+ , unitFromAttribute
15+ , voidFromAttribute
16+ , scientificFromAttribute
17+ ) where
18+
19+import Data.Fixed
20+import Data.Scientific
21+import Data.Text as T
22+import Data.Typeable
23+import Data.Void
24+import Text.XML.DOM.Parser.Content
25+
26+-- | Class of types which can be get from attribute value. Method
27+-- 'fromAttribute' is a convenient default parameter for
28+-- 'parseAttribute'
29+--
30+-- @since 2.0.0
31+class FromAttribute a where
32+ fromAttribute
33+ :: Text
34+ -- ^ Attribute contents to parse
35+ -> Either Text a
36+ -- ^ Either error message or result
37+
38+proxyFromAttribute
39+ :: FromAttribute a
40+ => Proxy a
41+ -> Text
42+ -> Either Text a
43+proxyFromAttribute _ = fromAttribute
44+
45+instance FromAttribute () where
46+ fromAttribute = unitFromAttribute
47+
48+unitFromAttribute :: Text -> Either Text ()
49+unitFromAttribute _ = Right ()
50+
51+instance FromAttribute Void where
52+ fromAttribute = voidFromAttribute
53+
54+voidFromAttribute :: Text -> Either Text Void
55+voidFromAttribute _ = Left "Void has been parsed"
56+
57+instance FromAttribute Text where
58+ fromAttribute = textFromAttribute
59+
60+textFromAttribute :: Text -> Either Text Text
61+textFromAttribute = Right
62+
63+instance FromAttribute String where
64+ fromAttribute = stringFromAttribute
65+
66+stringFromAttribute :: Text -> Either Text String
67+stringFromAttribute = Right . T.unpack
68+
69+instance FromAttribute Char where
70+ fromAttribute = charFromAttribute
71+
72+charFromAttribute :: Text -> Either Text Char
73+charFromAttribute = readChar
74+
75+instance FromAttribute Int where
76+ fromAttribute = intFromAttribute
77+
78+intFromAttribute :: Text -> Either Text Int
79+intFromAttribute = readContent
80+
81+instance FromAttribute Integer where
82+ fromAttribute = integerFromAttribute
83+
84+integerFromAttribute :: Text -> Either Text Integer
85+integerFromAttribute = readContent
86+
87+instance FromAttribute Double where
88+ fromAttribute = doubleFromAttribute
89+
90+doubleFromAttribute :: Text -> Either Text Double
91+doubleFromAttribute = readContent
92+
93+instance (Typeable a, HasResolution a) => FromAttribute (Fixed a) where
94+ fromAttribute = fixedFromAttribute
95+
96+fixedFromAttribute
97+ :: (HasResolution a, Typeable a)
98+ => Text
99+ -> Either Text (Fixed a)
100+fixedFromAttribute = readContent
101+
102+instance FromAttribute Bool where
103+ fromAttribute = boolFromAttribute
104+
105+boolFromAttribute :: Text -> Either Text Bool
106+boolFromAttribute = readBool
107+
108+instance FromAttribute Scientific where
109+ fromAttribute = scientificFromAttribute
110+
111+scientificFromAttribute :: Text -> Either Text Scientific
112+scientificFromAttribute = readContent
src/Text/XML/DOM/Parser/Class.hs → src/Text/XML/DOM/Parser/FromDom.hsrenamed+42−111
@@ -1,40 +1,32 @@
1−module Text.XML.DOM.Parser.Class
1+module Text.XML.DOM.Parser.FromDom
2 ( -- * FromDom
2 ( -- * FromDom
3 FromDom(..)
3 FromDom(..)
4 , proxyFromDom
4 , proxyFromDom
5 -- * Explicit methods for convenience
5 -- * Explicit methods for convenience
6 , elementFromDom
6 , elementFromDom
7− , unionFromDom
8 , textFromDom
7 , textFromDom
9 , stringFromDom
8 , stringFromDom
10 , charFromDom
9 , charFromDom
11− , readChar
12 , intFromDom
10 , intFromDom
13 , integerFromDom
11 , integerFromDom
14 , doubleFromDom
12 , doubleFromDom
15 , fixedFromDom
13 , fixedFromDom
16 , boolFromDom
14 , boolFromDom
17− , readBool
18 , unitFromDom
15 , unitFromDom
19 , voidFromDom
16 , voidFromDom
20 , scientificFromDom
17 , scientificFromDom
21− -- * FromAttribute
22− , FromAttribute(..)
23 ) where
18 ) where
24
19
25import Control.Applicative
20import Control.Applicative
26import Control.Lens
21import Control.Lens
27import Data.Fixed
22import Data.Fixed
28−import Data.Monoid
29−import Data.OpenUnion
30import Data.Scientific
23import Data.Scientific
31import Data.Text as T hiding (empty)
24import Data.Text as T hiding (empty)
32import Data.Typeable
25import Data.Typeable
33import Data.Void
26import Data.Void
34import Text.XML
27import Text.XML
35−import Text.XML.DOM.Parser.Combinators
28+import Text.XML.DOM.Parser.Content
36import Text.XML.DOM.Parser.Types
29import Text.XML.DOM.Parser.Types
37−import TypeFun.Data.List hiding (Union)
38
30
39proxyFromDom
31proxyFromDom
40 :: forall proxy m a
32 :: forall proxy m a
@@ -43,147 +35,86 @@ proxyFromDom
43 -> DomParserT Identity m a
35 -> DomParserT Identity m a
44proxyFromDom _ = fromDom
36proxyFromDom _ = fromDom
45
37
46−-- | Class of types which can be parsed from single XML element.
38+-- | Class of types which can be parsed from single XML element. The
39+-- method 'fromDom' is convenient default to use with 'inElem'
47class FromDom a where
40class FromDom a where
48 fromDom :: (Monad m) => DomParserT Identity m a
41 fromDom :: (Monad m) => DomParserT Identity m a
49
42
50instance FromDom () where
43instance FromDom () where
51 fromDom = unitFromDom
44 fromDom = unitFromDom
52
45
46+-- | Always successfully parses any DOM to @()@
47+unitFromDom :: (Monad m) => DomParserT Identity m ()
48+unitFromDom = pure ()
49+
53instance FromDom Void where
50instance FromDom Void where
54 fromDom = voidFromDom
51 fromDom = voidFromDom
55
52
53+-- | Never parses successfully. It is just 'empty'
54+voidFromDom :: (Monad m) => DomParserT Identity m Void
55+voidFromDom = empty
56+
56instance FromDom Text where
57instance FromDom Text where
57 fromDom = textFromDom
58 fromDom = textFromDom
58
59
59−instance FromDom String where
60− fromDom = stringFromDom
61−
62−instance FromDom Char where
63− fromDom = charFromDom
64−
65−instance FromDom Int where
66− fromDom = intFromDom
67−
68−instance FromDom Integer where
69− fromDom = integerFromDom
70−
71−instance FromDom Double where
72− fromDom = doubleFromDom
73−
74−instance (HasResolution a, Typeable a) => FromDom (Fixed a) where
75− fromDom = fixedFromDom
76−
77−instance FromDom Scientific where
78− fromDom = scientificFromDom
79−
80−instance FromDom Bool where
81− fromDom = boolFromDom
82−
83−instance FromDom (Union '[]) where
84− fromDom = empty
85−
86−instance
87− ( Typeable a, FromDom a, FromDom (Union as)
88− , SubList as (a ': as) )
89− => FromDom (Union (a ': as)) where
90− -- fromDom :: forall m. (DomParserMonad m) => m a
91− fromDom = (liftUnion <$> (proxyFromDom (Proxy :: Proxy a)))
92− <|> (reUnion <$> (proxyFromDom (Proxy :: Proxy (Union as))))
93−
94−instance FromDom Element where
95− fromDom = elementFromDom
96−
97−elementFromDom :: (Monad m) => DomParserT Identity m Element
98−elementFromDom = view $ pdElements . to runIdentity
99−
100−unionFromDom
101− :: (Monad m, FromDom (Union as))
102− => proxy as
103− -> DomParserT Identity m (Union as)
104−unionFromDom _ = fromDom
105−
106textFromDom :: (Monad m) => DomParserT Identity m Text
60textFromDom :: (Monad m) => DomParserT Identity m Text
107textFromDom = parseContent Right
61textFromDom = parseContent Right
108
62
63+instance FromDom String where
64+ fromDom = stringFromDom
65+
109stringFromDom :: (Monad m) => DomParserT Identity m String
66stringFromDom :: (Monad m) => DomParserT Identity m String
110stringFromDom = parseContent $ Right . T.unpack
67stringFromDom = parseContent $ Right . T.unpack
111
68
69+instance FromDom Char where
70+ fromDom = charFromDom
71+
112charFromDom :: (Monad m) => DomParserT Identity m Char
72charFromDom :: (Monad m) => DomParserT Identity m Char
113charFromDom = parseContent readChar
73charFromDom = parseContent readChar
114
74
115−-- | Expects text to be single character
75+instance FromDom Int where
116−--
76+ fromDom = intFromDom
117−-- @since 1.0.0
118−readChar :: Text -> Either Text Char
119−readChar t = case T.unpack $ T.strip t of
120− [c] -> Right c
121− _ -> Left "Should have exactly one non-blank character"
122
77
123intFromDom :: (Monad m) => DomParserT Identity m Int
78intFromDom :: (Monad m) => DomParserT Identity m Int
124intFromDom = parseContent readContent
79intFromDom = parseContent readContent
125
80
81+instance FromDom Integer where
82+ fromDom = integerFromDom
83+
126integerFromDom :: (Monad m) => DomParserT Identity m Integer
84integerFromDom :: (Monad m) => DomParserT Identity m Integer
127integerFromDom = parseContent readContent
85integerFromDom = parseContent readContent
128
86
87+instance FromDom Double where
88+ fromDom = doubleFromDom
89+
129doubleFromDom :: (Monad m) => DomParserT Identity m Double
90doubleFromDom :: (Monad m) => DomParserT Identity m Double
130doubleFromDom = parseContent readContent
91doubleFromDom = parseContent readContent
131
92
93+instance (HasResolution a, Typeable a) => FromDom (Fixed a) where
94+ fromDom = fixedFromDom
95+
132fixedFromDom
96fixedFromDom
133 :: (Monad m, Typeable a, HasResolution a)
97 :: (Monad m, Typeable a, HasResolution a)
134 => DomParserT Identity m (Fixed a)
98 => DomParserT Identity m (Fixed a)
135fixedFromDom = parseContent readContent
99fixedFromDom = parseContent readContent
136
100
101+instance FromDom Scientific where
102+ fromDom = scientificFromDom
103+
137scientificFromDom :: Monad m => DomParserT Identity m Scientific
104scientificFromDom :: Monad m => DomParserT Identity m Scientific
138scientificFromDom = parseContent readContent
105scientificFromDom = parseContent readContent
139
106
107+instance FromDom Bool where
108+ fromDom = boolFromDom
109+
140−-- | Expects content to be y, yes, t, true or 1 for True value. n, no,
110+-- | Expects content to be y, yes, t, true or 1 for True Values n, no,
141−-- f, false or 0 for False value. Case is not significant, blank
111+-- f, false or 0 for False. Case is not significant, blank characters
142−-- characters are striped.
112+-- are striped.
143boolFromDom :: (Monad m) => DomParserT Identity m Bool
113boolFromDom :: (Monad m) => DomParserT Identity m Bool
144boolFromDom = parseContent readBool
114boolFromDom = parseContent readBool
145
115
146−-- | @since 1.0.0
147−readBool :: Text -> Either Text Bool
148−readBool t =
149− let
150− lowt = T.toLower $ T.strip t
151− tvals = ["y", "yes", "t", "true", "1"]
152− fvals = ["n", "no", "f", "false", "0"]
153− in if
154− | lowt `elem` tvals -> Right True
155− | lowt `elem` fvals -> Right False
156− | otherwise ->
157− Left $ "Could not read " <> t <> " as Bool"
158−
159−-- | Always successfully parses any DOM to @()@
160−unitFromDom :: (Monad m) => DomParserT Identity m ()
161−unitFromDom = pure ()
162−
163−-- | Never parses successfully. It is just 'mzero'
164−voidFromDom :: (Monad m) => DomParserT Identity m Void
165−voidFromDom = empty
166−
167−class FromAttribute a where
168− fromAttribute :: Text -> Either Text a
169−
170−instance FromAttribute () where
116+instance FromDom Element where
171− fromAttribute _ = Right ()
117+ fromDom = elementFromDom
172−
173−instance FromAttribute Text where
174− fromAttribute = Right
175−
176−instance FromAttribute Char where
177− fromAttribute = readChar
178−
179−instance FromAttribute Int where
180− fromAttribute = readContent
181−
182−instance FromAttribute Integer where
183− fromAttribute = readContent
184−
185−instance (Typeable a, HasResolution a) => FromAttribute (Fixed a) where
186− fromAttribute = readContent
187
118
188−instance FromAttribute Scientific where
119+elementFromDom :: (Monad m) => DomParserT Identity m Element
189− fromAttribute = readContent
120+elementFromDom = view $ pdElements . to runIdentity
src/Text/XML/DOM/Parser/Types.hs+133−52
@@ -1,6 +1,19 @@
1module Text.XML.DOM.Parser.Types
1module Text.XML.DOM.Parser.Types
2+ (-- * Element matching
3+ ElemMatcher(..)
4+ , emMatch
5+ , emShow
6+ , matchElemName
7+ , elMatch
8+ -- * Name matching
9+ , NameMatcher(..)
10+ , nmMatch
11+ , nmShow
12+ , matchName
13+ , matchLocalName
14+ , matchCILocalName
2− ( -- * Parser internals
15+ -- * Parser internals
3− DomPath(..)
16+ , DomPath(..)
4 , ParserError(..)
17 , ParserError(..)
5 , pePath
18 , pePath
6 , peDetails
19 , peDetails
@@ -10,48 +23,140 @@ module Text.XML.DOM.Parser.Types
10 , ParserData(..)
23 , ParserData(..)
11 , pdElements
24 , pdElements
12 , pdPath
25 , pdPath
13− -- * Parser type
14 , DomParserT
26 , DomParserT
15 , DomParser
27 , DomParser
16 , runDomParserT
28 , runDomParserT
17 , runDomParser
29 , runDomParser
18 -- * Auxiliary
30 -- * Auxiliary
19− , DomTraversable(..)
20 , throwParserError
31 , throwParserError
21− , throwWrongFormat
22 ) where
32 ) where
23
33
24import Control.Exception
34import Control.Exception
25import Control.Lens
35import Control.Lens
26import Control.Monad.Except
36import Control.Monad.Except
27import Control.Monad.Reader
37import Control.Monad.Reader
28−import Data.List.NonEmpty as NE
38+import Data.CaseInsensitive as CI
29−import Data.Maybe
39+import Data.String
30−import Data.Text (Text)
40+import Data.Text as T
31import GHC.Generics (Generic)
41import GHC.Generics (Generic)
32import Text.XML
42import Text.XML
33import Text.XML.Lens
43import Text.XML.Lens
34
44
45+-- | Arbitrary element matcher
46+--
47+-- @since 2.0.0
48+data ElemMatcher = ElemMatcher
49+ { _emMatch :: Element -> Bool
50+ , _emShow :: Text
51+ -- ^ Field for 'Show' instance and bulding usefull errors
52+ }
53+
54+makeLenses ''ElemMatcher
55+
56+-- | Instance using instance of 'NameMatcher'
57+instance IsString ElemMatcher where
58+ fromString = matchElemName . fromString
59+
60+instance Show ElemMatcher where
61+ show = T.unpack . _emShow
62+
63+-- | Match element by name
64+--
65+-- @since 2.0.0
66+matchElemName :: NameMatcher -> ElemMatcher
67+matchElemName (NameMatcher matchName showName) = ElemMatcher
68+ { _emMatch = views name matchName
69+ , _emShow = showName
70+ }
71+
72+-- | Match over elements
73+--
74+-- @since 2.0.0
75+elMatch :: ElemMatcher -> Traversal' Element Element
76+elMatch (ElemMatcher match _) = filtered match
77+
78+-- | Arbitrary name matcher. Match name any way you want, but
79+-- considered to be used as comparator with some name with some rules
80+--
81+-- @since 2.0.0
82+data NameMatcher = NameMatcher
83+ { _nmMatch :: Name -> Bool
84+ -- ^ Name matching function, usually should be simple comparsion
85+ -- function takin in account only local name or other components
86+ -- of 'Name'
87+ , _nmShow :: Text
88+ -- ^ Field for 'Show' instance and bulding usefull errors
89+ }
90+
91+-- | Instance use 'matchCILocalName' as most general and liberal
92+-- matching strategy (while XML is often malformed).
93+--
94+-- @since 2.0.0
95+instance IsString NameMatcher where
96+ fromString = matchCILocalName . T.pack
97+
98+instance Show NameMatcher where
99+ show = T.unpack . _nmShow
100+
101+-- | Makes matcher which matches only local part of name igoring
102+-- namespace and prefix. Local name matching is case sensitive.
103+--
104+-- @since 2.0.0
105+matchLocalName :: Text -> NameMatcher
106+matchLocalName tname = NameMatcher
107+ { _nmMatch = \n -> nameLocalName n == tname
108+ , _nmShow = tname
109+ }
110+
111+-- | Makes matcher which matches only local part of name igoring
112+-- namespace and prefix. Local name matching is case insensitive. This
113+-- is the most common case.
114+--
115+-- @since 2.0.0
116+matchCILocalName :: Text -> NameMatcher
117+matchCILocalName tname = NameMatcher
118+ { _nmMatch = \n -> CI.mk (nameLocalName n) == CI.mk tname
119+ , _nmShow = tname
120+ }
121+
122+makeLenses ''NameMatcher
123+
124+-- | Makes matcher which match name by 'Eq' with given
125+--
126+-- @since 2.0.0
127+matchName :: Name -> NameMatcher
128+matchName n = NameMatcher
129+ { _nmMatch = (== n)
130+ , _nmShow = nameLocalName n
131+ }
132+
133+-- | Path some element should be found at. Path starts from the root
134+-- element of the document. Errors are much more usefull with path.
35newtype DomPath = DomPath
135newtype DomPath = DomPath
36 { unDomPath :: [Text]
136 { unDomPath :: [Text]
37− } deriving (Eq, Ord, Show, Read, Monoid)
137+ } deriving (Eq, Ord, Show, Semigroup, Monoid)
38
138
39-- | DOM parser error description.
139-- | DOM parser error description.
40data ParserError
140data ParserError
41 -- | Tag not found which should be.
141 -- | Tag not found which should be.
42 = PENotFound
142 = PENotFound
43 { _pePath :: DomPath
143 { _pePath :: DomPath
144+ -- ^ Path of element error occured in
44 }
145 }
45
146
46− -- | Tag contents has wrong format, (could not read text to value)
147+ -- | Expected attribute but not found
47− | PEWrongFormat
148+ --
48− { _peDetails :: Text
149+ -- @since 1.0.0
150+ | PEAttributeNotFound
151+ { _peAttributeName :: NameMatcher
49− , _pePath :: DomPath -- ^ path of element
152+ , _pePath :: DomPath
50 }
153 }
51
154
52 -- | Could not parse attribute
155 -- | Could not parse attribute
156+ --
157+ -- @since 1.0.0
53 | PEAttributeWrongFormat
158 | PEAttributeWrongFormat
54− { _peAttributeName :: Text
159+ { _peAttributeName :: NameMatcher
55 , _peDetails :: Text
160 , _peDetails :: Text
56 , _pePath :: DomPath
161 , _pePath :: DomPath
57 }
162 }
@@ -61,17 +166,17 @@ data ParserError
61 { _pePath :: DomPath
166 { _pePath :: DomPath
62 }
167 }
63
168
64− -- | Expected attribute but not found
169+ -- | Tag contents has wrong format, (could not read text to value)
65− | PEAttributeNotFound
170+ | PEContentWrongFormat
66− { _peAttributeName :: Text
171+ { _peDetails :: Text
67− , _pePath :: DomPath
172+ , _pePath :: DomPath
68 }
173 }
69
174
70 -- | Some other error
175 -- | Some other error
71 | PEOther
176 | PEOther
72 { _peDetails :: Text
177 { _peDetails :: Text
73 , _pePath :: DomPath
178 , _pePath :: DomPath
74− } deriving (Eq, Ord, Show, Generic)
179+ } deriving (Show, Generic)
75
180
76makeLenses ''ParserError
181makeLenses ''ParserError
77
182
@@ -79,15 +184,16 @@ instance Exception ParserError
79
184
80newtype ParserErrors = ParserErrors
185newtype ParserErrors = ParserErrors
81 { unParserErrors :: [ParserError]
186 { unParserErrors :: [ParserError]
82− } deriving (Ord, Eq, Show, Monoid, Generic)
187+ } deriving (Show, Semigroup, Monoid, Generic)
83
188
84makePrisms ''ParserErrors
189makePrisms ''ParserErrors
85
190
86instance Exception ParserErrors
191instance Exception ParserErrors
87
192
88
193
194+{- | Parser scope.
195+
89−{- | Parser scope parser runs in. Functor argument is usually @Identity@ or
196+Functor argument is usually @Identity@ or @[]@.
90−@[]@.
91
197
92If functor is @Identity@ then parser expects exactly ONE current element. This
198If functor is @Identity@ then parser expects exactly ONE current element. This
93is common behavior for content parsers, or parsers expecting strict XML
199is common behavior for content parsers, or parsers expecting strict XML
@@ -120,10 +226,11 @@ runDomParserT
120 -> DomParserT Identity m a
226 -> DomParserT Identity m a
121 -> m (Either ParserErrors a)
227 -> m (Either ParserErrors a)
122runDomParserT doc par =
228runDomParserT doc par =
229+ let
123− let pd = ParserData
230+ pd = ParserData
124− { _pdElements = doc ^. root . to pure
231+ { _pdElements = doc ^. root . to pure
125− , _pdPath = DomPath [doc ^. root . localName]
232+ , _pdPath = DomPath [doc ^. root . name . to nameLocalName]
126− }
233+ }
127 in runExceptT $ runReaderT par pd
234 in runExceptT $ runReaderT par pd
128
235
129runDomParser
236runDomParser
@@ -132,25 +239,6 @@ runDomParser
132 -> Either ParserErrors a
239 -> Either ParserErrors a
133runDomParser doc par = runIdentity $ runDomParserT doc par
240runDomParser doc par = runIdentity $ runDomParserT doc par
134
241
135−-- | Class of traversable functors which may be constructed from list. Or may
136−-- not.
137−class Traversable f => DomTraversable f where
138− -- | If method return Nothing this means we can not build traversable from
139− -- given list. In this case combinator should fail traversing.
140− buildDomTraversable :: [a] -> Maybe (f a)
141−
142−instance DomTraversable Identity where
143− buildDomTraversable = fmap Identity . listToMaybe
144−
145−instance DomTraversable [] where
146− buildDomTraversable = Just
147−
148−instance DomTraversable Maybe where
149− buildDomTraversable = Just . listToMaybe
150−
151−instance DomTraversable NonEmpty where
152− buildDomTraversable = NE.nonEmpty
153−
154throwParserError
242throwParserError
155 :: (MonadError ParserErrors m, MonadReader (ParserData f) m)
243 :: (MonadError ParserErrors m, MonadReader (ParserData f) m)
156 => (DomPath -> ParserError)
244 => (DomPath -> ParserError)
@@ -158,10 +246,3 @@ throwParserError
158throwParserError mkerr = do
246throwParserError mkerr = do
159 path <- view pdPath
247 path <- view pdPath
160 throwError $ ParserErrors $ [mkerr path]
248 throwError $ ParserErrors $ [mkerr path]
161−
162−-- | Throw 'PEWrongFormat' as very common case
163−throwWrongFormat
164− :: (MonadError ParserErrors m, MonadReader (ParserData f) m)
165− => Text
166− -> m a
167−throwWrongFormat err = throwParserError $ PEWrongFormat err
src/Text/XML/Soap.hsnew file+46
@@ -0,0 +1,46 @@
1+module Text.XML.Soap where
2+
3+import Control.Lens
4+import Data.String
5+import Text.XML
6+import Text.XML.DOM.Parser
7+import Text.XML.Writer
8+
9+data XmlEnvelope h b = XmlEnvelope
10+ { _xeHeader :: !(Maybe h)
11+ , _xeBody :: !(Maybe b)
12+ } deriving (Eq, Show)
13+
14+makeLenses ''XmlEnvelope
15+
16+xmlEnvelopeToDocument :: (ToXML h, ToXML b) => XmlEnvelope h b -> Document
17+xmlEnvelopeToDocument xe = doc
18+ where
19+ sname n = fromString $ "{http://schemas.xmlsoap.org/soap/envelope/}" <> n
20+ doc =
21+ Document
22+ { documentPrologue = Prologue [] Nothing []
23+ , documentRoot =
24+ Element
25+ { elementName = sname "Envelope"
26+ , elementAttributes = mempty
27+ , elementNodes = [NodeElement header, NodeElement body]
28+ }
29+ , documentEpilogue = []
30+ }
31+ header =
32+ Element
33+ { elementName = sname "Header"
34+ , elementAttributes = mempty
35+ , elementNodes = render . toXML $ xe ^. xeHeader
36+ }
37+ body =
38+ Element
39+ { elementName = sname "Body"
40+ , elementAttributes = mempty
41+ , elementNodes = render . toXML $ xe ^. xeBody
42+ }
43+
44+instance (FromDom h, FromDom b) => FromDom (XmlEnvelope h b) where
45+ fromDom = XmlEnvelope <$> inElemMay "Header" fromDom
46+ <*> inElemMay "Body" fromDom
stack.yamlmode 100644 → 120000+1−6
@@ -1,6 +0,0 @@
1−packages:
2− - .
3−extra-deps:
4− - open-union-0.2.0.0
5− - type-fun-0.1.1
6−resolver: lts-6.25
@@ -0,0 +1 @@
1+ghc-963.yaml
test/Main.hs+1−1
@@ -33,7 +33,7 @@ testStructureAttributes = do
33 int <- parseAttribute "int" readContent
33 int <- parseAttribute "int" readContent
34 bool <- parseAttribute "bool" readBool
34 bool <- parseAttribute "bool" readBool
35 return $ TestStructure
35 return $ TestStructure
36− { tsName = name
36+ { tsName = nameLocalName name
37 , tsInts = [int]
37 , tsInts = [int]
38 , tsBools = pure bool }
38 , tsBools = pure bool }
39
39