1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
|
--------------------------------------------------------------------
-- |
-- Module : Text.XML.Light.Types
-- Copyright : (c) Galois, Inc. 2007
-- License : BSD3
--
-- Maintainer: Iavor S. Diatchki <diatchki@galois.com>
-- Stability : provisional
-- Portability:
--
-- Basic XML types.
--
module Text.XML.Light.Types where
-- | A line is an Integer
type Line = Integer
-- | XML content
data Content = Elem Element
| Text CData
| CRef String
deriving Show
-- | XML elements
data Element = Element {
elName :: QName,
elAttribs :: [Attr],
elContent :: [Content],
elLine :: Maybe Line
} deriving Show
-- | XML attributes
data Attr = Attr {
attrKey :: QName,
attrVal :: String
} deriving (Eq,Ord,Show)
-- | XML CData
data CData = CData {
cdVerbatim :: CDataKind,
cdData :: String,
cdLine :: Maybe Line
} deriving Show
data CDataKind
= CDataText -- ^ Ordinary character data; pretty printer escapes &, < etc.
| CDataVerbatim -- ^ Unescaped character data; pretty printer embeds it in <![CDATA[..
| CDataRaw -- ^ As-is character data; pretty printer passes it along without any escaping or CDATA wrap-up.
deriving ( Eq, Show )
-- | XML qualified names
data QName = QName {
qName :: String,
qURI :: Maybe String,
qPrefix :: Maybe String
} deriving Show
instance Eq QName where
q1 == q2 = compare q1 q2 == EQ
instance Ord QName where
compare q1 q2 =
case compare (qName q1) (qName q2) of
EQ -> case (qURI q1, qURI q2) of
(Nothing,Nothing) -> compare (qPrefix q1) (qPrefix q2)
(u1,u2) -> compare u1 u2
x -> x
-- blank elements --------------------------------------------------------------
-- | Blank names
blank_name :: QName
blank_name = QName { qName = "", qURI = Nothing, qPrefix = Nothing }
-- | Blank cdata
blank_cdata :: CData
blank_cdata = CData { cdVerbatim = CDataText, cdData = "", cdLine = Nothing }
-- | Blank elements
blank_element :: Element
blank_element = Element
{ elName = blank_name
, elAttribs = []
, elContent = []
, elLine = Nothing
}
|