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- // Copyright 2013 The Chromium Authors. All rights reserved.
- // 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_
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