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1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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54 Vector<const uc16> GetCharVector(Handle<String> string) { | 54 Vector<const uc16> GetCharVector(Handle<String> string) { |
55 String::FlatContent flat = string->GetFlatContent(); | 55 String::FlatContent flat = string->GetFlatContent(); |
56 ASSERT(flat.IsTwoByte()); | 56 ASSERT(flat.IsTwoByte()); |
57 return flat.ToUC16Vector(); | 57 return flat.ToUC16Vector(); |
58 } | 58 } |
59 | 59 |
60 | 60 |
61 class URIUnescape : public AllStatic { | 61 class URIUnescape : public AllStatic { |
62 public: | 62 public: |
63 template<typename Char> | 63 template<typename Char> |
64 static MaybeHandle<String> Unescape(Isolate* isolate, Handle<String> source); | 64 static Handle<String> Unescape(Isolate* isolate, Handle<String> source); |
65 | 65 |
66 private: | 66 private: |
67 static const signed char kHexValue['g']; | 67 static const signed char kHexValue['g']; |
68 | 68 |
69 template<typename Char> | 69 template<typename Char> |
70 static MaybeHandle<String> UnescapeSlow( | 70 static Handle<String> UnescapeSlow( |
71 Isolate* isolate, Handle<String> string, int start_index); | 71 Isolate* isolate, Handle<String> string, int start_index); |
72 | 72 |
73 static INLINE(int TwoDigitHex(uint16_t character1, uint16_t character2)); | 73 static INLINE(int TwoDigitHex(uint16_t character1, uint16_t character2)); |
74 | 74 |
75 template <typename Char> | 75 template <typename Char> |
76 static INLINE(int UnescapeChar(Vector<const Char> vector, | 76 static INLINE(int UnescapeChar(Vector<const Char> vector, |
77 int i, | 77 int i, |
78 int length, | 78 int length, |
79 int* step)); | 79 int* step)); |
80 }; | 80 }; |
81 | 81 |
82 | 82 |
83 const signed char URIUnescape::kHexValue[] = { | 83 const signed char URIUnescape::kHexValue[] = { |
84 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, | 84 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
85 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, | 85 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
86 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, | 86 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
87 -0, 1, 2, 3, 4, 5, 6, 7, 8, 9, -1, -1, -1, -1, -1, -1, | 87 -0, 1, 2, 3, 4, 5, 6, 7, 8, 9, -1, -1, -1, -1, -1, -1, |
88 -1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1, | 88 -1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
89 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, | 89 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
90 -1, 10, 11, 12, 13, 14, 15 }; | 90 -1, 10, 11, 12, 13, 14, 15 }; |
91 | 91 |
92 | 92 |
93 template<typename Char> | 93 template<typename Char> |
94 MaybeHandle<String> URIUnescape::Unescape(Isolate* isolate, | 94 Handle<String> URIUnescape::Unescape(Isolate* isolate, Handle<String> source) { |
95 Handle<String> source) { | |
96 int index; | 95 int index; |
97 { DisallowHeapAllocation no_allocation; | 96 { DisallowHeapAllocation no_allocation; |
98 StringSearch<uint8_t, Char> search(isolate, STATIC_ASCII_VECTOR("%")); | 97 StringSearch<uint8_t, Char> search(isolate, STATIC_ASCII_VECTOR("%")); |
99 index = search.Search(GetCharVector<Char>(source), 0); | 98 index = search.Search(GetCharVector<Char>(source), 0); |
100 if (index < 0) return source; | 99 if (index < 0) return source; |
101 } | 100 } |
102 return UnescapeSlow<Char>(isolate, source, index); | 101 return UnescapeSlow<Char>(isolate, source, index); |
103 } | 102 } |
104 | 103 |
105 | 104 |
106 template <typename Char> | 105 template <typename Char> |
107 MaybeHandle<String> URIUnescape::UnescapeSlow( | 106 Handle<String> URIUnescape::UnescapeSlow( |
108 Isolate* isolate, Handle<String> string, int start_index) { | 107 Isolate* isolate, Handle<String> string, int start_index) { |
109 bool one_byte = true; | 108 bool one_byte = true; |
110 int length = string->length(); | 109 int length = string->length(); |
111 | 110 |
112 int unescaped_length = 0; | 111 int unescaped_length = 0; |
113 { DisallowHeapAllocation no_allocation; | 112 { DisallowHeapAllocation no_allocation; |
114 Vector<const Char> vector = GetCharVector<Char>(string); | 113 Vector<const Char> vector = GetCharVector<Char>(string); |
115 for (int i = start_index; i < length; unescaped_length++) { | 114 for (int i = start_index; i < length; unescaped_length++) { |
116 int step; | 115 int step; |
117 if (UnescapeChar(vector, i, length, &step) > | 116 if (UnescapeChar(vector, i, length, &step) > |
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302 } | 301 } |
303 } | 302 } |
304 } | 303 } |
305 | 304 |
306 return dest; | 305 return dest; |
307 } | 306 } |
308 | 307 |
309 } } // namespace v8::internal | 308 } } // namespace v8::internal |
310 | 309 |
311 #endif // V8_URI_H_ | 310 #endif // V8_URI_H_ |
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