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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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| 32 // programmer to use this to use these functions for their own strings | 32 // programmer to use this to use these functions for their own strings |
| 33 // types, without bloating the code by having inline templates used in | 33 // types, without bloating the code by having inline templates used in |
| 34 // every call site. | 34 // every call site. |
| 35 // | 35 // |
| 36 // *** This file must be included after url_canon_internal as we depend on some | 36 // *** This file must be included after url_canon_internal as we depend on some |
| 37 // functions in it. *** | 37 // functions in it. *** |
| 38 | 38 |
| 39 #ifndef GOOGLEURL_SRC_URL_CANON_INTERNAL_FILE_H__ | 39 #ifndef GOOGLEURL_SRC_URL_CANON_INTERNAL_FILE_H__ |
| 40 #define GOOGLEURL_SRC_URL_CANON_INTERNAL_FILE_H__ | 40 #define GOOGLEURL_SRC_URL_CANON_INTERNAL_FILE_H__ |
| 41 | 41 |
| 42 #include "googleurl/src/url_file.h" | 42 #include "url/url_canon_internal_file.h" |
| 43 #include "googleurl/src/url_parse_internal.h" | |
| 44 | |
| 45 using namespace url_canon; | |
| 46 | |
| 47 // Given a pointer into the spec, this copies and canonicalizes the drive | |
| 48 // letter and colon to the output, if one is found. If there is not a drive | |
| 49 // spec, it won't do anything. The index of the next character in the input | |
| 50 // spec is returned (after the colon when a drive spec is found, the begin | |
| 51 // offset if one is not). | |
| 52 template<typename CHAR> | |
| 53 static int FileDoDriveSpec(const CHAR* spec, int begin, int end, | |
| 54 CanonOutput* output) { | |
| 55 // The path could be one of several things: /foo/bar, c:/foo/bar, /c:/foo, | |
| 56 // (with backslashes instead of slashes as well). | |
| 57 int num_slashes = CountConsecutiveSlashes(spec, begin, end); | |
| 58 int after_slashes = begin + num_slashes; | |
| 59 | |
| 60 if (!DoesBeginWindowsDriveSpec(spec, after_slashes, end)) | |
| 61 return begin; // Haven't consumed any characters | |
| 62 | |
| 63 // DoesBeginWindowsDriveSpec will ensure that the drive letter is valid | |
| 64 // and that it is followed by a colon/pipe. | |
| 65 | |
| 66 // Normalize Windows drive letters to uppercase | |
| 67 if (spec[after_slashes] >= 'a' && spec[after_slashes] <= 'z') | |
| 68 output->push_back(spec[after_slashes] - 'a' + 'A'); | |
| 69 else | |
| 70 output->push_back(static_cast<char>(spec[after_slashes])); | |
| 71 | |
| 72 // Normalize the character following it to a colon rather than pipe. | |
| 73 output->push_back(':'); | |
| 74 output->push_back('/'); | |
| 75 return after_slashes + 2; | |
| 76 } | |
| 77 | |
| 78 // FileDoDriveSpec will have already added the first backslash, so we need to | |
| 79 // write everything following the slashes using the path canonicalizer. | |
| 80 template<typename CHAR, typename UCHAR> | |
| 81 static void FileDoPath(const CHAR* spec, int begin, int end, | |
| 82 CanonOutput* output) { | |
| 83 // Normalize the number of slashes after the drive letter. The path | |
| 84 // canonicalizer expects the input to begin in a slash already so | |
| 85 // doesn't check. We want to handle no-slashes | |
| 86 int num_slashes = CountConsecutiveSlashes(spec, begin, end); | |
| 87 int after_slashes = begin + num_slashes; | |
| 88 | |
| 89 // Now use the regular path canonicalizer to canonicalize the rest of the | |
| 90 // path. We supply it with the path following the slashes. It won't prepend | |
| 91 // a slash because it assumes any nonempty path already starts with one. | |
| 92 // We explicitly filter out calls with no path here to prevent that case. | |
| 93 ParsedURL::Component sub_path(after_slashes, end - after_slashes); | |
| 94 if (sub_path.len > 0) { | |
| 95 // Give it a fake output component to write into. DoCanonicalizeFile will | |
| 96 // compute the full path component. | |
| 97 ParsedURL::Component fake_output_path; | |
| 98 URLCanonInternal<CHAR, UCHAR>::DoPath( | |
| 99 spec, sub_path, output, &fake_output_path); | |
| 100 } | |
| 101 } | |
| 102 | |
| 103 template<typename CHAR, typename UCHAR> | |
| 104 static bool DoCanonicalizeFileURL(const URLComponentSource<CHAR>& source, | |
| 105 const ParsedURL& parsed, | |
| 106 CanonOutput* output, | |
| 107 ParsedURL* new_parsed) { | |
| 108 // Things we don't set in file: URLs. | |
| 109 new_parsed->username = ParsedURL::Component(0, -1); | |
| 110 new_parsed->password = ParsedURL::Component(0, -1); | |
| 111 new_parsed->port = ParsedURL::Component(0, -1); | |
| 112 | |
| 113 // Scheme (known, so we don't bother running it through the more | |
| 114 // complicated scheme canonicalizer). | |
| 115 new_parsed->scheme.begin = output->length(); | |
| 116 output->push_back('f'); | |
| 117 output->push_back('i'); | |
| 118 output->push_back('l'); | |
| 119 output->push_back('e'); | |
| 120 new_parsed->scheme.len = output->length() - new_parsed->scheme.begin; | |
| 121 output->push_back(':'); | |
| 122 | |
| 123 // Write the separator for the host. | |
| 124 output->push_back('/'); | |
| 125 output->push_back('/'); | |
| 126 | |
| 127 // Append the host. For many file URLs, this will be empty. For UNC, this | |
| 128 // will be present. | |
| 129 // TODO(brettw) This doesn't do any checking for host name validity. We | |
| 130 // should probably handle validity checking of UNC hosts differently than | |
| 131 // for regular IP hosts. | |
| 132 bool success = URLCanonInternal<CHAR, UCHAR>::DoHost( | |
| 133 source.host, parsed.host, output, &new_parsed->host); | |
| 134 | |
| 135 // Write a separator for the start of the path. We'll ignore any slashes | |
| 136 // already at the beginning of the path. | |
| 137 new_parsed->path.begin = output->length(); | |
| 138 output->push_back('/'); | |
| 139 | |
| 140 // Copies and normalizes the "c:" at the beginning, if present. | |
| 141 int after_drive = FileDoDriveSpec(source.path, parsed.path.begin, | |
| 142 parsed.path.end(), output); | |
| 143 | |
| 144 // Copies the rest of the path | |
| 145 FileDoPath<CHAR, UCHAR>(source.path, after_drive, parsed.path.end(), output); | |
| 146 new_parsed->path.len = output->length() - new_parsed->path.begin; | |
| 147 | |
| 148 // Things following the path we can use the standard canonicalizers for. | |
| 149 success &= URLCanonInternal<CHAR, UCHAR>::DoQuery( | |
| 150 source.query, parsed.query, output, &new_parsed->query); | |
| 151 success &= URLCanonInternal<CHAR, UCHAR>::DoRef( | |
| 152 source.ref, parsed.ref, output, &new_parsed->ref); | |
| 153 | |
| 154 return success; | |
| 155 } | |
| 156 | 43 |
| 157 #endif // GOOGLEURL_SRC_URL_CANON_INTERNAL_FILE_H__ | 44 #endif // GOOGLEURL_SRC_URL_CANON_INTERNAL_FILE_H__ |
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