/src/mozilla-central/dom/base/nsXMLNameSpaceMap.cpp
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1 | | /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
2 | | /* vim: set ts=8 sts=2 et sw=2 tw=80: */ |
3 | | /* This Source Code Form is subject to the terms of the Mozilla Public |
4 | | * License, v. 2.0. If a copy of the MPL was not distributed with this |
5 | | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
6 | | |
7 | | /* |
8 | | * A class for keeping track of prefix-to-namespace-id mappings |
9 | | */ |
10 | | |
11 | | #include "nsXMLNameSpaceMap.h" |
12 | | #include "nsContentUtils.h" |
13 | | #include "nsGkAtoms.h" |
14 | | #include "nsNameSpaceManager.h" |
15 | | #include "mozilla/dom/NameSpaceConstants.h" |
16 | | |
17 | | template <> |
18 | | class nsDefaultComparator <nsNameSpaceEntry, nsAtom*> { |
19 | | public: |
20 | 0 | bool Equals(const nsNameSpaceEntry& aEntry, nsAtom* const& aPrefix) const { |
21 | 0 | return aEntry.prefix == aPrefix; |
22 | 0 | } |
23 | | }; |
24 | | |
25 | | template <> |
26 | | class nsDefaultComparator <nsNameSpaceEntry, int32_t> { |
27 | | public: |
28 | 0 | bool Equals(const nsNameSpaceEntry& aEntry, const int32_t& aNameSpace) const { |
29 | 0 | return aEntry.nameSpaceID == aNameSpace; |
30 | 0 | } |
31 | | }; |
32 | | |
33 | | |
34 | | /* static */ nsXMLNameSpaceMap* |
35 | | nsXMLNameSpaceMap::Create(bool aForXML) |
36 | 0 | { |
37 | 0 | nsXMLNameSpaceMap *map = new nsXMLNameSpaceMap(); |
38 | 0 | NS_ENSURE_TRUE(map, nullptr); |
39 | 0 |
|
40 | 0 | if (aForXML) { |
41 | 0 | nsresult rv1 = map->AddPrefix(nsGkAtoms::xmlns, |
42 | 0 | kNameSpaceID_XMLNS); |
43 | 0 | nsresult rv2 = map->AddPrefix(nsGkAtoms::xml, kNameSpaceID_XML); |
44 | 0 |
|
45 | 0 | if (NS_FAILED(rv1) || NS_FAILED(rv2)) { |
46 | 0 | delete map; |
47 | 0 | map = nullptr; |
48 | 0 | } |
49 | 0 | } |
50 | 0 |
|
51 | 0 | return map; |
52 | 0 | } |
53 | | |
54 | | nsXMLNameSpaceMap::nsXMLNameSpaceMap() |
55 | | : mNameSpaces(4) |
56 | 0 | { |
57 | 0 | } |
58 | | |
59 | | nsresult |
60 | | nsXMLNameSpaceMap::AddPrefix(nsAtom *aPrefix, int32_t aNameSpaceID) |
61 | 0 | { |
62 | 0 | if (!mNameSpaces.Contains(aPrefix) && !mNameSpaces.AppendElement(aPrefix)) { |
63 | 0 | return NS_ERROR_OUT_OF_MEMORY; |
64 | 0 | } |
65 | 0 | mNameSpaces[mNameSpaces.IndexOf(aPrefix)].nameSpaceID = aNameSpaceID; |
66 | 0 | return NS_OK; |
67 | 0 | } |
68 | | |
69 | | nsresult |
70 | | nsXMLNameSpaceMap::AddPrefix(nsAtom *aPrefix, nsString &aURI) |
71 | 0 | { |
72 | 0 | int32_t id; |
73 | 0 | nsresult rv = nsContentUtils::NameSpaceManager()->RegisterNameSpace(aURI, |
74 | 0 | id); |
75 | 0 |
|
76 | 0 | NS_ENSURE_SUCCESS(rv, rv); |
77 | 0 |
|
78 | 0 | return AddPrefix(aPrefix, id); |
79 | 0 | } |
80 | | |
81 | | int32_t |
82 | | nsXMLNameSpaceMap::FindNameSpaceID(nsAtom *aPrefix) const |
83 | 0 | { |
84 | 0 | size_t index = mNameSpaces.IndexOf(aPrefix); |
85 | 0 | if (index != mNameSpaces.NoIndex) { |
86 | 0 | return mNameSpaces[index].nameSpaceID; |
87 | 0 | } |
88 | 0 | |
89 | 0 | // The default mapping for no prefix is no namespace. If a non-null prefix |
90 | 0 | // was specified and we didn't find it, we return an error. |
91 | 0 | |
92 | 0 | return aPrefix ? kNameSpaceID_Unknown : kNameSpaceID_None; |
93 | 0 | } |
94 | | |
95 | | nsAtom* |
96 | | nsXMLNameSpaceMap::FindPrefix(int32_t aNameSpaceID) const |
97 | 0 | { |
98 | 0 | size_t index = mNameSpaces.IndexOf(aNameSpaceID); |
99 | 0 | if (index != mNameSpaces.NoIndex) { |
100 | 0 | return mNameSpaces[index].prefix; |
101 | 0 | } |
102 | 0 | |
103 | 0 | return nullptr; |
104 | 0 | } |
105 | | |
106 | | void |
107 | | nsXMLNameSpaceMap::Clear() |
108 | 0 | { |
109 | 0 | mNameSpaces.Clear(); |
110 | 0 | } |