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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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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 // Provides shared functions used by the internals of the parser and | 30 // Provides shared functions used by the internals of the parser and |
31 // canonicalizer for file URLs. Do not use outside of these modules. | 31 // canonicalizer for file URLs. Do not use outside of these modules. |
32 | 32 |
33 #ifndef GOOGLEURL_SRC_URL_FILE_H__ | 33 #ifndef GOOGLEURL_SRC_URL_FILE_H__ |
34 #define GOOGLEURL_SRC_URL_FILE_H__ | 34 #define GOOGLEURL_SRC_URL_FILE_H__ |
35 | 35 |
36 #include "googleurl/src/url_parse_internal.h" | 36 #include "url/url_file.h" |
37 | |
38 namespace url_parse { | |
39 | |
40 #ifdef WIN32 | |
41 | |
42 // We allow both "c:" and "c|" as drive identifiers. | |
43 inline bool IsWindowsDriveSeparator(char16 ch) { | |
44 return ch == ':' || ch == '|'; | |
45 } | |
46 inline bool IsWindowsDriveLetter(char16 ch) { | |
47 return (ch >= 'A' && ch <= 'Z') || (ch >= 'a' && ch <= 'z'); | |
48 } | |
49 | |
50 #endif // WIN32 | |
51 | |
52 // Returns the index of the next slash in the input after the given index, or | |
53 // spec_len if the end of the input is reached. | |
54 template<typename CHAR> | |
55 inline int FindNextSlash(const CHAR* spec, int begin_index, int spec_len) { | |
56 int idx = begin_index; | |
57 while (idx < spec_len && !IsURLSlash(spec[idx])) | |
58 idx++; | |
59 return idx; | |
60 } | |
61 | |
62 #ifdef WIN32 | |
63 | |
64 // Returns true if the start_offset in the given spec looks like it begins a | |
65 // drive spec, for example "c:". This function explicitly handles start_offset | |
66 // values that are equal to or larger than the spec_len to simplify callers. | |
67 // | |
68 // If this returns true, the spec is guaranteed to have a valid drive letter | |
69 // plus a colon starting at |start_offset|. | |
70 template<typename CHAR> | |
71 inline bool DoesBeginWindowsDriveSpec(const CHAR* spec, int start_offset, | |
72 int spec_len) { | |
73 int remaining_len = spec_len - start_offset; | |
74 if (remaining_len < 2) | |
75 return false; // Not enough room. | |
76 if (!IsWindowsDriveLetter(spec[start_offset])) | |
77 return false; // Doesn't start with a valid drive letter. | |
78 if (!IsWindowsDriveSeparator(spec[start_offset + 1])) | |
79 return false; // Isn't followed with a drive separator. | |
80 return true; | |
81 } | |
82 | |
83 // Returns true if the start_offset in the given text looks like it begins a | |
84 // UNC path, for example "\\". This function explicitly handles start_offset | |
85 // values that are equal to or larger than the spec_len to simplify callers. | |
86 // | |
87 // When strict_slashes is set, this function will only accept backslashes as is | |
88 // standard for Windows. Otherwise, it will accept forward slashes as well | |
89 // which we use for a lot of URL handling. | |
90 template<typename CHAR> | |
91 inline bool DoesBeginUNCPath(const CHAR* text, | |
92 int start_offset, | |
93 int len, | |
94 bool strict_slashes) { | |
95 int remaining_len = len - start_offset; | |
96 if (remaining_len < 2) | |
97 return false; | |
98 | |
99 if (strict_slashes) | |
100 return text[start_offset] == '\\' && text[start_offset + 1] == '\\'; | |
101 return IsURLSlash(text[start_offset]) && IsURLSlash(text[start_offset + 1]); | |
102 } | |
103 | |
104 #endif // WIN32 | |
105 | |
106 } // namespace url_parse | |
107 | 37 |
108 #endif // GOOGLEURL_SRC_URL_FILE_H__ | 38 #endif // GOOGLEURL_SRC_URL_FILE_H__ |
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