| // Copyright 2013 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef URL_URL_CANON_INTERNAL_FILE_H_ |
| #define URL_URL_CANON_INTERNAL_FILE_H_ |
| |
| // As with url_canon_internal.h, this file is intended to be included in |
| // another C++ file where the template types are defined. This allows the |
| // programmer to use this to use these functions for their own strings |
| // types, without bloating the code by having inline templates used in |
| // every call site. |
| // |
| // *** This file must be included after url_canon_internal as we depend on some |
| // functions in it. *** |
| |
| #include "base/strings/string_util.h" |
| #include "url/url_file.h" |
| #include "url/url_parse_internal.h" |
| |
| namespace url { |
| |
| // Given a pointer into the spec, this copies and canonicalizes the drive |
| // letter and colon to the output, if one is found. If there is not a drive |
| // spec, it won't do anything. The index of the next character in the input |
| // spec is returned (after the colon when a drive spec is found, the begin |
| // offset if one is not). |
| template<typename CHAR> |
| static int FileDoDriveSpec(const CHAR* spec, int begin, int end, |
| CanonOutput* output) { |
| // The path could be one of several things: /foo/bar, c:/foo/bar, /c:/foo, |
| // (with backslashes instead of slashes as well). |
| int num_slashes = CountConsecutiveSlashes(spec, begin, end); |
| int after_slashes = begin + num_slashes; |
| |
| if (!DoesBeginWindowsDriveSpec(spec, after_slashes, end)) |
| return begin; // Haven't consumed any characters |
| |
| // DoesBeginWindowsDriveSpec will ensure that the drive letter is valid |
| // and that it is followed by a colon/pipe. |
| |
| // Normalize Windows drive letters to uppercase |
| if (base::IsAsciiLower(spec[after_slashes])) |
| output->push_back(spec[after_slashes] - 'a' + 'A'); |
| else |
| output->push_back(static_cast<char>(spec[after_slashes])); |
| |
| // Normalize the character following it to a colon rather than pipe. |
| output->push_back(':'); |
| output->push_back('/'); |
| return after_slashes + 2; |
| } |
| |
| // FileDoDriveSpec will have already added the first backslash, so we need to |
| // write everything following the slashes using the path canonicalizer. |
| template<typename CHAR, typename UCHAR> |
| static void FileDoPath(const CHAR* spec, int begin, int end, |
| CanonOutput* output) { |
| // Normalize the number of slashes after the drive letter. The path |
| // canonicalizer expects the input to begin in a slash already so |
| // doesn't check. We want to handle no-slashes |
| int num_slashes = CountConsecutiveSlashes(spec, begin, end); |
| int after_slashes = begin + num_slashes; |
| |
| // Now use the regular path canonicalizer to canonicalize the rest of the |
| // path. We supply it with the path following the slashes. It won't prepend |
| // a slash because it assumes any nonempty path already starts with one. |
| // We explicitly filter out calls with no path here to prevent that case. |
| ParsedComponent sub_path(after_slashes, end - after_slashes); |
| if (sub_path.len > 0) { |
| // Give it a fake output component to write into. DoCanonicalizeFile will |
| // compute the full path component. |
| ParsedComponent fake_output_path; |
| URLCanonInternal<CHAR, UCHAR>::DoPath( |
| spec, sub_path, output, &fake_output_path); |
| } |
| } |
| |
| template<typename CHAR, typename UCHAR> |
| static bool DoCanonicalizeFileURL(const URLComponentSource<CHAR>& source, |
| const ParsedURL& parsed, |
| CanonOutput* output, |
| ParsedURL* new_parsed) { |
| // Things we don't set in file: URLs. |
| new_parsed->username = ParsedComponent(0, -1); |
| new_parsed->password = ParsedComponent(0, -1); |
| new_parsed->port = ParsedComponent(0, -1); |
| |
| // Scheme (known, so we don't bother running it through the more |
| // complicated scheme canonicalizer). |
| new_parsed->scheme.begin = output->length(); |
| output->push_back('f'); |
| output->push_back('i'); |
| output->push_back('l'); |
| output->push_back('e'); |
| new_parsed->scheme.len = output->length() - new_parsed->scheme.begin; |
| output->push_back(':'); |
| |
| // Write the separator for the host. |
| output->push_back('/'); |
| output->push_back('/'); |
| |
| // Append the host. For many file URLs, this will be empty. For UNC, this |
| // will be present. |
| // TODO(brettw) This doesn't do any checking for host name validity. We |
| // should probably handle validity checking of UNC hosts differently than |
| // for regular IP hosts. |
| bool success = URLCanonInternal<CHAR, UCHAR>::DoHost( |
| source.host, parsed.host, output, &new_parsed->host); |
| |
| // Write a separator for the start of the path. We'll ignore any slashes |
| // already at the beginning of the path. |
| new_parsed->path.begin = output->length(); |
| output->push_back('/'); |
| |
| // Copy and normalize the "c:" at the beginning, if present. |
| int after_drive = FileDoDriveSpec(source.path, parsed.path.begin, |
| parsed.path.end(), output); |
| |
| // Copy the rest of the path. |
| FileDoPath<CHAR, UCHAR>(source.path, after_drive, parsed.path.end(), output); |
| new_parsed->path.len = output->length() - new_parsed->path.begin; |
| |
| // For things following the path, we can use the standard canonicalizers. |
| success &= URLCanonInternal<CHAR, UCHAR>::DoQuery( |
| source.query, parsed.query, output, &new_parsed->query); |
| success &= URLCanonInternal<CHAR, UCHAR>::DoRef( |
| source.ref, parsed.ref, output, &new_parsed->ref); |
| |
| return success; |
| } |
| |
| } // namespace url |
| |
| #endif // URL_URL_CANON_INTERNAL_FILE_H_ |