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.travis.ymlnew file+32
since splitsnapshots
unifiedsplit
@@ -0,0 +1,32 @@
1+# Use new container infrastructure to enable caching
2+sudo: false
3+
4+# Do not choose a language; we provide our own build tools.
5+language: generic
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+
13+# Caching so the next build will be fast too.
14+cache:
15+ directories:
16+ - $HOME/.stack
17+
18+# Ensure necessary system libraries are present
19+addons:
20+ apt:
21+ packages:
22+ - libgmp-dev
23+
24+before_install:
25+# Download and unpack the stack executable
26+- mkdir -p ~/.local/bin
27+- export PATH=$HOME/.local/bin:$PATH
28+- travis_retry curl -L https://www.stackage.org/stack/linux-x86_64 | tar xz --wildcards --strip-components=1 -C ~/.local/bin '*/stack'
29+
30+script:
31+# Build the package, its tests, and its docs and run the tests
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+49−163
@@ -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
@@ -15,46 +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 ) where
18 ) where
32
19
33−import Control.Lens
20+import Control.Lens
34−import Control.Monad.Except
35−import Control.Monad.Reader
21+import Control.Monad.Reader
36−import Data.List.NonEmpty (NonEmpty(..))
22+import Data.Foldable as F
37−import qualified Data.Map.Strict as M
23+import Data.List as L
38−import Data.Monoid
24+import Data.List.NonEmpty (NonEmpty(..))
39−import Data.Text (Text)
40−import qualified Data.Text as T
25+import Data.Text as T
41−import Data.Traversable
26+import Data.Traversable
42−import Data.Typeable
27+import Text.XML
43−import Text.Read
44−import Text.XML
28+import Text.XML.DOM.Parser.Buildable
45−import Text.XML.DOM.Parser.Types
29+import Text.XML.DOM.Parser.Types
46−import Text.XML.Lens
30+import Text.XML.Lens
47
31
48
32
49−-- | Generic function to traverse arbitrary inner cursors.
33+-- | Generic function to traverse arbitrary inner elements.
50traverseElems
34traverseElems
51 :: (Monad m, Foldable g, Traversable f)
35 :: (Monad m, Foldable g, Traversable f)
52 => ([Element] -> DomParserT g m (f (DomPath, Element)))
36 => ([Element] -> DomParserT g m (f (DomPath, Element)))
53 -- ^ Takes list of current elements and returns container with
37 -- ^ Takes list of current elements and returns container with
54− -- pairs of subpath (relatively to current element) and element
38+ -- pairs of subpath (relatively to current elements) and element
55 -- to run parser in
39 -- to run parser in
56 -> DomParserT Identity m a
40 -> DomParserT Identity m a
57− -- ^ Parser will be runned for each element found in traversable
41+ -- ^ Parser to run for each element found in traversable 'f'
58 -> DomParserT g m (f a)
42 -> DomParserT g m (f a)
59traverseElems trav parser = do
43traverseElems trav parser = do
60 pd <- ask
44 pd <- ask
@@ -64,68 +48,73 @@ traverseElems trav parser = do
64 newpd = ParserData
48 newpd = ParserData
65 { _pdElements = Identity e
49 { _pdElements = Identity e
66 , _pdPath = pd ^. pdPath <> subpath }
50 , _pdPath = pd ^. pdPath <> subpath }
67− -- type of reader has been changed, local won't work here
51+ lift $ runReaderT parser newpd
68− magnify (to $ const newpd) parser
69
52
70−-- | Takes function filtering
53+-- | Traverses elements located in same path using filtering function
71inFilteredTrav
54inFilteredTrav
72− :: (Monad m, Foldable g, DomTraversable f)
55+ :: (Monad m, Foldable g, Buildable f)
73 => ([Element] -> (DomPath, [Element]))
56 => ([Element] -> (DomPath, [Element]))
74− -- ^ Function returning some filtered elements with path suffixes which will
57+ -- ^ Takes list of current elements and returns some descendants
75− -- 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
76 -> DomParserT Identity m a
60 -> DomParserT Identity m a
77 -> DomParserT g m (f a)
61 -> DomParserT g m (f a)
78inFilteredTrav deeper = traverseElems trav
62inFilteredTrav deeper = traverseElems trav
79 where
63 where
80 trav e = do
64 trav e = do
81 let (path, elems) = deeper e
65 let (path, elems) = deeper e
82− case buildDomTraversable elems of
66+ case build elems of
83 Nothing -> throwParserError $ PENotFound . (<> path)
67 Nothing -> throwParserError $ PENotFound . (<> path)
84 Just tr -> return $ fmap (path,) tr
68 Just tr -> return $ fmap (path,) tr
85
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.
86inElemTrav
74inElemTrav
87− :: (Monad m, Foldable g, DomTraversable f)
75+ :: (Monad m, Foldable g, Buildable f)
88− => Text
76+ => ElemMatcher -- ^ Tag(s) matcher to traverse in
89 -> DomParserT Identity m a
77 -> DomParserT Identity m a
90 -> DomParserT g m (f a)
78 -> DomParserT g m (f a)
91inElemTrav n = inFilteredTrav deeper
79inElemTrav n = inFilteredTrav deeper
92 where
80 where
93− deeper = ([n],) . toListOf (folded . nodes . folded . _Element . ell n)
81+ elemsFold = folded . nodes . folded . _Element . elMatch n
82+ deeper = (DomPath [_emShow n],) . toListOf elemsFold
94
83
95−-- | Runs parser inside first children element with given name
84+-- | Runs parser inside first children element matched by macher
96inElem
85inElem
97 :: (Monad m, Foldable g)
86 :: (Monad m, Foldable g)
98− => Text
87+ => ElemMatcher
99 -> DomParserT Identity m a
88 -> DomParserT Identity m a
100 -> DomParserT g m a
89 -> DomParserT g m a
101inElem n = fmap runIdentity . inElemTrav n
90inElem n = fmap runIdentity . inElemTrav n
102
91
103inElemAll
92inElemAll
104 :: (Monad m, Foldable g)
93 :: (Monad m, Foldable g)
105− => Text
94+ => ElemMatcher
106 -> DomParserT Identity m a
95 -> DomParserT Identity m a
107 -> DomParserT g m [a]
96 -> DomParserT g m [a]
108inElemAll = inElemTrav
97inElemAll = inElemTrav
109
98
110inElemMay
99inElemMay
111 :: (Monad m, Foldable g)
100 :: (Monad m, Foldable g)
112− => Text
101+ => ElemMatcher
113 -> DomParserT Identity m a
102 -> DomParserT Identity m a
114 -> DomParserT g m (Maybe a)
103 -> DomParserT g m (Maybe a)
115inElemMay = inElemTrav
104inElemMay = inElemTrav
116
105
117inElemNe
106inElemNe
118 :: (Monad m, Foldable g)
107 :: (Monad m, Foldable g)
119− => Text
108+ => ElemMatcher
120 -> DomParserT Identity m a
109 -> DomParserT Identity m a
121 -> DomParserT g m (NonEmpty a)
110 -> DomParserT g m (NonEmpty a)
122inElemNe = inElemTrav
111inElemNe = inElemTrav
123
112
124{- | 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
125−["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
126will 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
127behaviour 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
128−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
129elements. Consider this code
118elements. Consider this code
130
119
131@
120@
@@ -143,26 +132,31 @@ which translates like: @a > b > c > fromDom@
143As 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
144single element, unlike 'divePath' which runs inner parser @in all@ descendants
133single element, unlike 'divePath' which runs inner parser @in all@ descendants
145in 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.
146-}
140-}
147
141
148divePath
142divePath
149 :: forall m g a
143 :: forall m g a
150 . (Monad m, Foldable g)
144 . (Monad m, Foldable g)
151− => [Text]
145+ => [ElemMatcher]
152 -> DomParserT [] m a
146 -> DomParserT [] m a
153 -> DomParserT g m a
147 -> DomParserT g m a
154divePath path = magnify $ to modElems
148divePath path = magnify $ to modElems
155 where
149 where
156 modElems
150 modElems
157 = over pdElements (toListOf $ folded . diver)
151 = over pdElements (toListOf $ folded . diver)
158− . over pdPath (<> path)
152+ . over pdPath (<> DomPath (L.map _emShow path))
159 diver :: Fold Element Element
153 diver :: Fold Element Element
160− diver = foldr (.) id $ map toDive path
154+ diver = F.foldr (.) id $ L.map toDive path
161− toDive n = nodes . folded . _Element . ell n
155+ toDive n = nodes . folded . _Element . elMatch n
162
156
163diveElem
157diveElem
164 :: (Monad m, Foldable g)
158 :: (Monad m, Foldable g)
165− => Text
159+ => ElemMatcher
166 -> DomParserT [] m a
160 -> DomParserT [] m a
167 -> DomParserT g m a
161 -> DomParserT g m a
168diveElem p = divePath [p]
162diveElem p = divePath [p]
@@ -189,7 +183,7 @@ ignoreEmpty
189 -> DomParserT Identity m (Maybe a)
183 -> DomParserT Identity m (Maybe a)
190ignoreEmpty = ignoreElem test
184ignoreEmpty = ignoreElem test
191 where
185 where
192− test e = null $ e ^. nodes
186+ test e = L.null $ e ^. nodes
193
187
194-- | 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
195-- , then returns Nothing, else runs parser.
189-- , then returns Nothing, else runs parser.
@@ -203,114 +197,6 @@ ignoreBlank = ignoreElem test
203 let
197 let
204 elems = e ^.. nodes . folded . _Element
198 elems = e ^.. nodes . folded . _Element
205 cont = mconcat $ e ^.. nodes . folded . _Content
199 cont = mconcat $ e ^.. nodes . folded . _Content
206− in if | not $ null elems -> False
200+ in if | not $ L.null elems -> False
207 | T.null $ T.strip cont -> True
201 | T.null $ T.strip cont -> True
208 | otherwise -> False
202 | otherwise -> False
209−
210−-- | Returns name of current element.
211−--
212−-- @since 1.0.0
213−getCurrentName :: (Monad m) => DomParserT Identity m Text
214−getCurrentName = view $ pdElements . to runIdentity . localName
215−
216−-- | If name of current tag differs from first argument throws 'PENotFound' with
217−-- tag name replaced in last path's segment. Useful for checking root
218−-- document's element name.
219−checkCurrentName
220− :: (Monad m)
221− => Text
222− -> DomParserT Identity m ()
223−checkCurrentName n = do
224− cn <- getCurrentName
225− unless (cn == n) $ do
226− p <- view pdPath
227− let pinit = if null p then [] else init p
228− throwError $ ParserErrors [PENotFound $ pinit ++ [n]]
229− return ()
230−
231−-- | Get current content. If current element contains no content or
232−-- have inner elements then Nothing returned
233−--
234−-- @since 1.0.0
235−getCurrentContent :: (Monad m) => DomParserT Identity m (Maybe Text)
236−getCurrentContent = do
237− nds <- view $ pdElements . to runIdentity . nodes
238− let
239− els :: [Element]
240− els = nds ^.. folded . _Element
241− conts :: [Text]
242− conts = nds ^.. folded . _Content
243− return $ if
244− | not $ null els -> Nothing
245− | null conts -> Nothing
246− | otherwise -> Just $ mconcat conts
247−
248−-- | Parses content inside current tag. It expects current element set
249−-- consists of exactly ONE element. If current element does not
250−-- contains content or have other elements as childs then throws error
251−parseContent
252− :: (Monad m)
253− => (Text -> Either Text a)
254− -- ^ Content parser, return error msg if value is not parsed
255− -> DomParserT Identity m a
256−parseContent parse = getCurrentContent >>= \case
257− Nothing -> throwParserError PEContentNotFound
258− Just c -> case parse c of
259− Left e -> throwParserError $ PEWrongFormat e
260− Right a -> return a
261−
262−-- | If reader returns 'Nothing' then resulting function returns 'Left
263−-- "error message"'
264−--
265−-- @since 1.0.0
266−maybeReadContent
267− :: forall a
268− . (Typeable a)
269− => (Text -> Maybe a)
270− -- ^ Content or attribute reader
271− -> Text
272− -- ^ Content or attribute value
273− -> Either Text a
274−maybeReadContent f t = maybe (Left msg) Right $ f t
275− where
276− msg = "Not readable " <> n <> ": " <> t
277− n = T.pack $ show $ typeRep (Proxy :: Proxy a)
278−
279−-- | Tries to read given text to value using 'Read'. Useful to use
280−-- with 'parseContent' and 'parseAttribute'
281−readContent
282− :: (Read a, Typeable a)
283− => Text
284− -> Either Text a
285−readContent = maybeReadContent $ readMaybe . T.unpack . T.strip
286−
287−-- | Retuns map of attributes of current element
288−--
289−-- @since 1.0.0
290−getCurrentAttributes :: (Monad m) => DomParserT Identity m (M.Map Name Text)
291−getCurrentAttributes = view $ pdElements . to runIdentity . attrs
292−
293−-- | Returns element with given name or 'Nothing'
294−--
295−-- @since 1.0.0
296−getCurrentAttribute :: (Monad m) => Text -> DomParserT Identity m (Maybe Text)
297−getCurrentAttribute attrName'
298− = preview $ pdElements . to runIdentity . attr attrName
299− where
300− attrName = Name attrName' Nothing Nothing
301−
302−-- | Parses attribute with given name, throws error if attribute is not found.
303−--
304−-- @since 1.0.0
305−parseAttribute
306− :: (Monad m)
307− => Text
308− -- ^ Attribute name
309− -> (Text -> Either Text a)
310− -- ^ Attribute content parser
311− -> DomParserT Identity m a
312−parseAttribute attrName parser = getCurrentAttribute attrName >>= \case
313− Nothing -> throwParserError $ PEAttributeNotFound attrName
314− Just aval -> case parser aval of
315− Left err -> throwParserError $ PEAttributeWrongFormat attrName err
316− Right a -> return 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+51−95
@@ -1,39 +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 ) where
18 ) where
22
19
23−import Control.Applicative
20+import Control.Applicative
24−import Control.Lens
21+import Control.Lens
25−import Data.Fixed
22+import Data.Fixed
26−import Data.Monoid
27−import Data.OpenUnion
28−import Data.Scientific
23+import Data.Scientific
29−import Data.Text (Text)
30−import qualified Data.Text as T
24+import Data.Text as T hiding (empty)
31−import Data.Typeable
25+import Data.Typeable
32−import Data.Void
26+import Data.Void
33−import Text.XML
27+import Text.XML
34−import Text.XML.DOM.Parser.Combinators
28+import Text.XML.DOM.Parser.Content
35−import Text.XML.DOM.Parser.Types
29+import Text.XML.DOM.Parser.Types
36−import TypeFun.Data.List hiding (Union)
37
30
38proxyFromDom
31proxyFromDom
39 :: forall proxy m a
32 :: forall proxy m a
@@ -42,123 +35,86 @@ proxyFromDom
42 -> DomParserT Identity m a
35 -> DomParserT Identity m a
43proxyFromDom _ = fromDom
36proxyFromDom _ = fromDom
44
37
45−-- | 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'
46class FromDom a where
40class FromDom a where
47 fromDom :: (Monad m) => DomParserT Identity m a
41 fromDom :: (Monad m) => DomParserT Identity m a
48
42
49instance FromDom () where
43instance FromDom () where
50 fromDom = unitFromDom
44 fromDom = unitFromDom
51
45
46+-- | Always successfully parses any DOM to @()@
47+unitFromDom :: (Monad m) => DomParserT Identity m ()
48+unitFromDom = pure ()
49+
52instance FromDom Void where
50instance FromDom Void where
53 fromDom = voidFromDom
51 fromDom = voidFromDom
54
52
53+-- | Never parses successfully. It is just 'empty'
54+voidFromDom :: (Monad m) => DomParserT Identity m Void
55+voidFromDom = empty
56+
55instance FromDom Text where
57instance FromDom Text where
56 fromDom = textFromDom
58 fromDom = textFromDom
57
59
58−instance FromDom String where
59− fromDom = stringFromDom
60−
61−instance FromDom Char where
62− fromDom = charFromDom
63−
64−instance FromDom Int where
65− fromDom = intFromDom
66−
67−instance FromDom Integer where
68− fromDom = integerFromDom
69−
70−instance FromDom Double where
71− fromDom = doubleFromDom
72−
73−instance (HasResolution a, Typeable a) => FromDom (Fixed a) where
74− fromDom = fixedFromDom
75−
76−instance FromDom Scientific where
77− fromDom = scientificFromDom
78−
79−instance FromDom Bool where
80− fromDom = boolFromDom
81−
82−instance FromDom (Union '[]) where
83− fromDom = empty
84−
85−instance
86− ( Typeable a, FromDom a, FromDom (Union as)
87− , SubList as (a ': as) )
88− => FromDom (Union (a ': as)) where
89− -- fromDom :: forall m. (DomParserMonad m) => m a
90− fromDom = (liftUnion <$> (proxyFromDom (Proxy :: Proxy a)))
91− <|> (reUnion <$> (proxyFromDom (Proxy :: Proxy (Union as))))
92−
93−instance FromDom Element where
94− fromDom = elementFromDom
95−
96−elementFromDom :: (Monad m) => DomParserT Identity m Element
97−elementFromDom = view $ pdElements . to runIdentity
98−
99−unionFromDom
100− :: (Monad m, FromDom (Union as))
101− => proxy as
102− -> DomParserT Identity m (Union as)
103−unionFromDom _ = fromDom
104−
105textFromDom :: (Monad m) => DomParserT Identity m Text
60textFromDom :: (Monad m) => DomParserT Identity m Text
106textFromDom = parseContent Right
61textFromDom = parseContent Right
107
62
63+instance FromDom String where
64+ fromDom = stringFromDom
65+
108stringFromDom :: (Monad m) => DomParserT Identity m String
66stringFromDom :: (Monad m) => DomParserT Identity m String
109stringFromDom = parseContent $ Right . T.unpack
67stringFromDom = parseContent $ Right . T.unpack
110
68
69+instance FromDom Char where
70+ fromDom = charFromDom
71+
111charFromDom :: (Monad m) => DomParserT Identity m Char
72charFromDom :: (Monad m) => DomParserT Identity m Char
112charFromDom = parseContent readChar
73charFromDom = parseContent readChar
113
74
114−-- | Expects text to be single character
75+instance FromDom Int where
115−--
76+ fromDom = intFromDom
116−-- @since 1.0.0
117−readChar :: Text -> Either Text Char
118−readChar t = case T.unpack $ T.strip t of
119− [c] -> Right c
120− _ -> Left "Should have exactly one non-blank character"
121
77
122intFromDom :: (Monad m) => DomParserT Identity m Int
78intFromDom :: (Monad m) => DomParserT Identity m Int
123intFromDom = parseContent readContent
79intFromDom = parseContent readContent
124
80
81+instance FromDom Integer where
82+ fromDom = integerFromDom
83+
125integerFromDom :: (Monad m) => DomParserT Identity m Integer
84integerFromDom :: (Monad m) => DomParserT Identity m Integer
126integerFromDom = parseContent readContent
85integerFromDom = parseContent readContent
127
86
87+instance FromDom Double where
88+ fromDom = doubleFromDom
89+
128doubleFromDom :: (Monad m) => DomParserT Identity m Double
90doubleFromDom :: (Monad m) => DomParserT Identity m Double
129doubleFromDom = parseContent readContent
91doubleFromDom = parseContent readContent
130
92
93+instance (HasResolution a, Typeable a) => FromDom (Fixed a) where
94+ fromDom = fixedFromDom
95+
131fixedFromDom
96fixedFromDom
132 :: (Monad m, Typeable a, HasResolution a)
97 :: (Monad m, Typeable a, HasResolution a)
133 => DomParserT Identity m (Fixed a)
98 => DomParserT Identity m (Fixed a)
134fixedFromDom = parseContent readContent
99fixedFromDom = parseContent readContent
135
100
101+instance FromDom Scientific where
102+ fromDom = scientificFromDom
103+
136scientificFromDom :: Monad m => DomParserT Identity m Scientific
104scientificFromDom :: Monad m => DomParserT Identity m Scientific
137scientificFromDom = parseContent readContent
105scientificFromDom = parseContent readContent
138
106
107+instance FromDom Bool where
108+ fromDom = boolFromDom
109+
139−-- | 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,
140−-- 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
141−-- characters are striped.
112+-- are striped.
142boolFromDom :: (Monad m) => DomParserT Identity m Bool
113boolFromDom :: (Monad m) => DomParserT Identity m Bool
143boolFromDom = parseContent readBool
114boolFromDom = parseContent readBool
144
115
145−-- | @since 1.0.0
116+instance FromDom Element where
146−readBool :: Text -> Either Text Bool
117+ fromDom = elementFromDom
147−readBool t =
148− let
149− lowt = T.toLower $ T.strip t
150− tvals = ["y", "yes", "t", "true", "1"]
151− fvals = ["n", "no", "f", "false", "0"]
152− in if
153− | lowt `elem` tvals -> Right True
154− | lowt `elem` fvals -> Right False
155− | otherwise ->
156− Left $ "Could not read " <> t <> " as Bool"
157−
158−-- | Always successfully parses any DOM to @()@
159−unitFromDom :: (Monad m) => DomParserT Identity m ()
160−unitFromDom = pure ()
161
118
162−-- | Never parses successfully. It is just 'mzero'
163−voidFromDom :: (Monad m) => DomParserT Identity m Void
119+elementFromDom :: (Monad m) => DomParserT Identity m Element
164−voidFromDom = empty
120+elementFromDom = view $ pdElements . to runIdentity
src/Text/XML/DOM/Parser/Types.hs+145−63
@@ -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
@@ -10,47 +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
24−import Control.Exception
34+import Control.Exception
25−import Control.Lens
35+import Control.Lens
26−import Control.Monad.Except
36+import Control.Monad.Except
27−import Control.Monad.Reader
37+import Control.Monad.Reader
28−import Data.List.NonEmpty (NonEmpty(..))
38+import Data.CaseInsensitive as CI
29−import qualified Data.List.NonEmpty as NE
30−import Data.Maybe
39+import Data.String
31−import Data.Text (Text)
40+import Data.Text as T
32−import GHC.Generics (Generic)
41+import GHC.Generics (Generic)
33−import Text.XML
42+import Text.XML
34−import Text.XML.Lens
43+import Text.XML.Lens
35−
44+
36−type DomPath = [Text]
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.
135+newtype DomPath = DomPath
136+ { unDomPath :: [Text]
137+ } deriving (Eq, Ord, Show, Semigroup, Monoid)
37
138
38-- | DOM parser error description.
139-- | DOM parser error description.
39data ParserError
140data ParserError
40 -- | Tag not found which should be.
141 -- | Tag not found which should be.
41 = PENotFound
142 = PENotFound
42 { _pePath :: DomPath
143 { _pePath :: DomPath
144+ -- ^ Path of element error occured in
43 }
145 }
44
146
45− -- | Tag contents has wrong format, (could not read text to value)
147+ -- | Expected attribute but not found
46− | PEWrongFormat
148+ --
47− { _peDetails :: Text
149+ -- @since 1.0.0
150+ | PEAttributeNotFound
151+ { _peAttributeName :: NameMatcher
48− , _pePath :: DomPath -- ^ path of element
152+ , _pePath :: DomPath
49 }
153 }
50
154
51 -- | Could not parse attribute
155 -- | Could not parse attribute
156+ --
157+ -- @since 1.0.0
52 | PEAttributeWrongFormat
158 | PEAttributeWrongFormat
53− { _peAttributeName :: Text
159+ { _peAttributeName :: NameMatcher
54 , _peDetails :: Text
160 , _peDetails :: Text
55 , _pePath :: DomPath
161 , _pePath :: DomPath
56 }
162 }
@@ -60,17 +166,17 @@ data ParserError
60 { _pePath :: DomPath
166 { _pePath :: DomPath
61 }
167 }
62
168
63− -- | Expected attribute but not found
169+ -- | Tag contents has wrong format, (could not read text to value)
64− | PEAttributeNotFound
170+ | PEContentWrongFormat
65− { _peAttributeName :: Text
171+ { _peDetails :: Text
66− , _pePath :: DomPath
172+ , _pePath :: DomPath
67 }
173 }
68
174
69 -- | Some other error
175 -- | Some other error
70 | PEOther
176 | PEOther
71 { _peDetails :: Text
177 { _peDetails :: Text
72 , _pePath :: DomPath
178 , _pePath :: DomPath
73− } deriving (Eq, Ord, Show, Generic)
179+ } deriving (Show, Generic)
74
180
75makeLenses ''ParserError
181makeLenses ''ParserError
76
182
@@ -78,15 +184,16 @@ instance Exception ParserError
78
184
79newtype ParserErrors = ParserErrors
185newtype ParserErrors = ParserErrors
80 { unParserErrors :: [ParserError]
186 { unParserErrors :: [ParserError]
81− } deriving (Ord, Eq, Show, Monoid, Generic)
187+ } deriving (Show, Semigroup, Monoid, Generic)
82
188
83makePrisms ''ParserErrors
189makePrisms ''ParserErrors
84
190
85instance Exception ParserErrors
191instance Exception ParserErrors
86
192
87
193
194+{- | Parser scope.
195+
88−{- | Parser scope parser runs in. Functor argument is usually @Identity@ or
196+Functor argument is usually @Identity@ or @[]@.
89−@[]@.
90
197
91If functor is @Identity@ then parser expects exactly ONE current element. This
198If functor is @Identity@ then parser expects exactly ONE current element. This
92is common behavior for content parsers, or parsers expecting strict XML
199is common behavior for content parsers, or parsers expecting strict XML
@@ -119,10 +226,11 @@ runDomParserT
119 -> DomParserT Identity m a
226 -> DomParserT Identity m a
120 -> m (Either ParserErrors a)
227 -> m (Either ParserErrors a)
121runDomParserT doc par =
228runDomParserT doc par =
229+ let
122− let pd = ParserData
230+ pd = ParserData
123− { _pdElements = doc ^. root . to pure
231+ { _pdElements = doc ^. root . to pure
124− , _pdPath = [doc ^. root . localName]
232+ , _pdPath = DomPath [doc ^. root . name . to nameLocalName]
125− }
233+ }
126 in runExceptT $ runReaderT par pd
234 in runExceptT $ runReaderT par pd
127
235
128runDomParser
236runDomParser
@@ -131,36 +239,10 @@ runDomParser
131 -> Either ParserErrors a
239 -> Either ParserErrors a
132runDomParser doc par = runIdentity $ runDomParserT doc par
240runDomParser doc par = runIdentity $ runDomParserT doc par
133
241
134−-- | Class of traversable functors which may be constructed from list. Or may
135−-- not.
136−class Traversable f => DomTraversable f where
137− -- | If method return Nothing this means we can not build traversable from
138− -- given list. In this case combinator should fail traversing.
139− buildDomTraversable :: [a] -> Maybe (f a)
140−
141−instance DomTraversable Identity where
142− buildDomTraversable = fmap Identity . listToMaybe
143−
144−instance DomTraversable [] where
145− buildDomTraversable = Just
146−
147−instance DomTraversable Maybe where
148− buildDomTraversable = Just . listToMaybe
149−
150−instance DomTraversable NonEmpty where
151− buildDomTraversable = NE.nonEmpty
152−
153throwParserError
242throwParserError
154 :: (MonadError ParserErrors m, MonadReader (ParserData f) m)
243 :: (MonadError ParserErrors m, MonadReader (ParserData f) m)
155− => ([Text] -> ParserError)
244+ => (DomPath -> ParserError)
156 -> m a
245 -> m a
157throwParserError mkerr = do
246throwParserError mkerr = do
158 path <- view pdPath
247 path <- view pdPath
159− throwError $ ParserErrors [mkerr path]
248+ throwError $ ParserErrors $ [mkerr path]
160−
161−-- | Throw 'PEWrongFormat' as very common case
162−throwWrongFormat
163− :: (MonadError ParserErrors m, MonadReader (ParserData f) m)
164− => Text
165− -> m a
166−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-5.18
@@ -0,0 +1 @@
1+ghc-963.yaml
test/Main.hs+6−6
@@ -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
@@ -193,7 +193,7 @@ specParserFailedPath
193 :: (Show a)
193 :: (Show a)
194 => String -- ^ Name of spec
194 => String -- ^ Name of spec
195 -> Document
195 -> Document
196− -> [Text] -- ^ Expteced path in error
196+ -> DomPath -- ^ Expteced path in error
197 -> DomParser Identity a
197 -> DomParser Identity a
198 -> Spec
198 -> Spec
199specParserFailedPath name doc path parser = it name $ example $ do
199specParserFailedPath name doc path parser = it name $ example $ do
@@ -226,7 +226,7 @@ combinationsSpec = do
226 describe "deep" $ do
226 describe "deep" $ do
227 let parser = inElem "a" $ inElem "b" textFromDom
227 let parser = inElem "a" $ inElem "b" textFromDom
228 specParserFailedPath "docDeepMultiple2" docDeepMultiple2
228 specParserFailedPath "docDeepMultiple2" docDeepMultiple2
229− ["root", "a", "b"] parser
229+ (DomPath ["root", "a", "b"]) parser
230 -- should fail here because first tag "a" does not contains
230 -- should fail here because first tag "a" does not contains
231 -- tag "b" which is expected by parser @inElem "b"@
231 -- tag "b" which is expected by parser @inElem "b"@
232
232
@@ -276,7 +276,7 @@ combinationsSpec = do
276 specParserEq "docDeepMultiple1" docDeepMultiple1 "content1" parser
276 specParserEq "docDeepMultiple1" docDeepMultiple1 "content1" parser
277 specParserEq "docDeepMultiple2" docDeepMultiple2 "content1" parser
277 specParserEq "docDeepMultiple2" docDeepMultiple2 "content1" parser
278 describe "fails" $ do
278 describe "fails" $ do
279− specParserFailedPath "docSimple" docSimple ["root", "a", "b"] parser
279+ specParserFailedPath "docSimple" docSimple (DomPath ["root", "a", "b"]) parser
280 describe "multiple elements" $ do
280 describe "multiple elements" $ do
281 let
281 let
282 parser = diveElem "a" $ inElemAll "b" textFromDom
282 parser = diveElem "a" $ inElemAll "b" textFromDom
@@ -311,9 +311,9 @@ combinationsSpec = do
311 inElem "a" $ do
311 inElem "a" $ do
312 checkCurrentName "a"
312 checkCurrentName "a"
313 describe "fails" $ do
313 describe "fails" $ do
314− specParserFailedPath "root element" docSimple ["toor"] $ do
314+ specParserFailedPath "root element" docSimple (DomPath ["toor"]) $ do
315 checkCurrentName "toor"
315 checkCurrentName "toor"
316− specParserFailedPath "inner element" docSimple ["root", "b"] $ do
316+ specParserFailedPath "inner element" docSimple (DomPath ["root", "b"]) $ do
317 inElem "a" $ checkCurrentName "b"
317 inElem "a" $ checkCurrentName "b"
318
318
319contentSpec :: Spec
319contentSpec :: Spec