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1 // Copyright 2007, Google Inc. | 1 // Copyright 2007, Google Inc. |
2 // All rights reserved. | 2 // All rights reserved. |
3 // | 3 // |
4 // Redistribution and use in source and binary forms, with or without | 4 // Redistribution and use in source and binary forms, with or without |
5 // modification, are permitted provided that the following conditions are | 5 // modification, are permitted provided that the following conditions are |
6 // met: | 6 // met: |
7 // | 7 // |
8 // * Redistributions of source code must retain the above copyright | 8 // * Redistributions of source code must retain the above copyright |
9 // notice, this list of conditions and the following disclaimer. | 9 // notice, this list of conditions and the following disclaimer. |
10 // * Redistributions in binary form must reproduce the above | 10 // * Redistributions in binary form must reproduce the above |
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24 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | 24 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
25 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | 25 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
26 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 26 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
27 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 27 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
28 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 28 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
29 | 29 |
30 // This header file defines a canonicalizer output method class for STL | 30 // This header file defines a canonicalizer output method class for STL |
31 // strings. Because the canonicalizer tries not to be dependent on the STL, | 31 // strings. Because the canonicalizer tries not to be dependent on the STL, |
32 // we have segregated it here. | 32 // we have segregated it here. |
33 | 33 |
34 #ifndef URL_URL_CANON_STDSTRING_H_ | 34 #ifndef GOOGLEURL_SRC_URL_CANON_STDSTRING_H__ |
35 #define URL_URL_CANON_STDSTRING_H_ | 35 #define GOOGLEURL_SRC_URL_CANON_STDSTRING_H__ |
36 | 36 |
37 #include <string> | 37 #include <string> |
38 | 38 #include "googleurl/src/url_canon.h" |
39 #include "base/compiler_specific.h" | |
40 #include "url/url_canon.h" | |
41 #include "url/url_common.h" | |
42 | 39 |
43 namespace url_canon { | 40 namespace url_canon { |
44 | 41 |
45 // Write into a std::string given in the constructor. This object does not own | 42 // Write into a std::string given in the constructor. This object does not own |
46 // the string itself, and the user must ensure that the string stays alive | 43 // the string itself, and the user must ensure that the string stays alive |
47 // throughout the lifetime of this object. | 44 // throughout the lifetime of this object. |
48 // | 45 // |
49 // The given string will be appended to; any existing data in the string will | 46 // The given string will be appended to; any existing data in the string will |
50 // be preserved. The caller should reserve() the amount of data in the string | 47 // be preserved. The caller should reserve() the amount of data in the string |
51 // they expect to be written. We will resize if necessary, but that's slow. | 48 // they expect to be written. We will resize if necessary, but that's slow. |
52 // | 49 // |
53 // Note that when canonicalization is complete, the string will likely have | 50 // Note that when canonicalization is complete, the string will likely have |
54 // unused space at the end because we make the string very big to start out | 51 // unused space at the end because we make the string very big to start out |
55 // with (by |initial_size|). This ends up being important because resize | 52 // with (by |initial_size|). This ends up being important because resize |
56 // operations are slow, and because the base class needs to write directly | 53 // operations are slow, and because the base class needs to write directly |
57 // into the buffer. | 54 // into the buffer. |
58 // | 55 // |
59 // Therefore, the user should call Complete() before using the string that | 56 // Therefore, the user should call Complete() before using the string that |
60 // this class wrote into. | 57 // this class wrote into. |
61 class GURL_API StdStringCanonOutput : public CanonOutput { | 58 class StdStringCanonOutput : public CanonOutput { |
62 public: | 59 public: |
63 StdStringCanonOutput(std::string* str) | 60 StdStringCanonOutput(std::string* str) |
64 : CanonOutput(), | 61 : CanonOutput(), |
65 str_(str) { | 62 str_(str) { |
66 cur_len_ = static_cast<int>(str_->size()); // Append to existing data. | 63 cur_len_ = static_cast<int>(str_->size()); // Append to existing data. |
67 str_->resize(str_->capacity()); | 64 str_->resize(str_->capacity()); |
68 buffer_ = str_->empty() ? NULL : &(*str_)[0]; | 65 buffer_ = str_->empty() ? NULL : &(*str_)[0]; |
69 buffer_len_ = static_cast<int>(str_->size()); | 66 buffer_len_ = static_cast<int>(str_->size()); |
70 } | 67 } |
71 virtual ~StdStringCanonOutput() { | 68 virtual ~StdStringCanonOutput() { |
72 // Nothing to do, we don't own the string. | 69 // Nothing to do, we don't own the string. |
73 } | 70 } |
74 | 71 |
75 // Must be called after writing has completed but before the string is used. | 72 // Must be called after writing has completed but before the string is used. |
76 void Complete() { | 73 void Complete() { |
77 str_->resize(cur_len_); | 74 str_->resize(cur_len_); |
78 buffer_len_ = cur_len_; | 75 buffer_len_ = cur_len_; |
79 } | 76 } |
80 | 77 |
81 virtual void Resize(int sz) OVERRIDE; | 78 virtual void Resize(int sz) { |
| 79 str_->resize(sz); |
| 80 buffer_ = str_->empty() ? NULL : &(*str_)[0]; |
| 81 buffer_len_ = sz; |
| 82 } |
82 | 83 |
83 protected: | 84 protected: |
84 std::string* str_; | 85 std::string* str_; |
85 }; | 86 }; |
86 | 87 |
87 // An extension of the Replacements class that allows the setters to use | 88 // An extension of the Replacements class that allows the setters to use |
88 // standard strings. | 89 // standard strings. |
89 // | 90 // |
90 // The strings passed as arguments are not copied and must remain valid until | 91 // The strings passed as arguments are not copied and must remain valid until |
91 // this class goes out of scope. | 92 // this class goes out of scope. |
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122 url_parse::Component(0, static_cast<int>(s.length()))); | 123 url_parse::Component(0, static_cast<int>(s.length()))); |
123 } | 124 } |
124 void SetRefStr(const STR& s) { | 125 void SetRefStr(const STR& s) { |
125 this->SetRef(s.data(), | 126 this->SetRef(s.data(), |
126 url_parse::Component(0, static_cast<int>(s.length()))); | 127 url_parse::Component(0, static_cast<int>(s.length()))); |
127 } | 128 } |
128 }; | 129 }; |
129 | 130 |
130 } // namespace url_canon | 131 } // namespace url_canon |
131 | 132 |
132 #endif // URL_URL_CANON_STDSTRING_H_ | 133 #endif // GOOGLEURL_SRC_URL_CANON_STDSTRING_H__ |
| 134 |
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