1c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// Copyright 2007, Google Inc. 2c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// All rights reserved. 3c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// 4c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// Redistribution and use in source and binary forms, with or without 5c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// modification, are permitted provided that the following conditions are 6c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// met: 7c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// 8c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// * Redistributions of source code must retain the above copyright 9c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// notice, this list of conditions and the following disclaimer. 10c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// * Redistributions in binary form must reproduce the above 11c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// copyright notice, this list of conditions and the following disclaimer 12c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// in the documentation and/or other materials provided with the 13c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// distribution. 14c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// * Neither the name of Google Inc. nor the names of its 15c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// contributors may be used to endorse or promote products derived from 16c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// this software without specific prior written permission. 17c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// 18c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott 30c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// Provides shared functions used by the internals of the parser and 31c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// canonicalizer for file URLs. Do not use outside of these modules. 32c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott 33c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott#ifndef GOOGLEURL_SRC_URL_FILE_H__ 34c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott#define GOOGLEURL_SRC_URL_FILE_H__ 35c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott 36c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott#include "googleurl/src/url_parse_internal.h" 37c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott 38c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scottnamespace url_parse { 39c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott 40c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott#ifdef WIN32 41c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott 42c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// We allow both "c:" and "c|" as drive identifiers. 43c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scottinline bool IsWindowsDriveSeparator(char16 ch) { 44c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott return ch == ':' || ch == '|'; 45c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott} 46c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scottinline bool IsWindowsDriveLetter(char16 ch) { 47c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott return (ch >= 'A' && ch <= 'Z') || (ch >= 'a' && ch <= 'z'); 48c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott} 49c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott 50c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott#endif // WIN32 51c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott 52c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// Returns the index of the next slash in the input after the given index, or 53c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// spec_len if the end of the input is reached. 54c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scotttemplate<typename CHAR> 55c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scottinline int FindNextSlash(const CHAR* spec, int begin_index, int spec_len) { 56c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott int idx = begin_index; 57c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott while (idx < spec_len && !IsURLSlash(spec[idx])) 58c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott idx++; 59c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott return idx; 60c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott} 61c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott 62c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott#ifdef WIN32 63c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott 64c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// Returns true if the start_offset in the given spec looks like it begins a 65c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// drive spec, for example "c:". This function explicitly handles start_offset 66c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// values that are equal to or larger than the spec_len to simplify callers. 67c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// 68c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// If this returns true, the spec is guaranteed to have a valid drive letter 69c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// plus a colon starting at |start_offset|. 70c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scotttemplate<typename CHAR> 71c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scottinline bool DoesBeginWindowsDriveSpec(const CHAR* spec, int start_offset, 72c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott int spec_len) { 73c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott int remaining_len = spec_len - start_offset; 74c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott if (remaining_len < 2) 75c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott return false; // Not enough room. 76c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott if (!IsWindowsDriveLetter(spec[start_offset])) 77c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott return false; // Doesn't start with a valid drive letter. 78c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott if (!IsWindowsDriveSeparator(spec[start_offset + 1])) 79c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott return false; // Isn't followed with a drive separator. 80c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott return true; 81c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott} 82c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott 83c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// Returns true if the start_offset in the given text looks like it begins a 84c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// UNC path, for example "\\". This function explicitly handles start_offset 85c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// values that are equal to or larger than the spec_len to simplify callers. 86c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// 87c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// When strict_slashes is set, this function will only accept backslashes as is 88c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// standard for Windows. Otherwise, it will accept forward slashes as well 89c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott// which we use for a lot of URL handling. 90c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scotttemplate<typename CHAR> 91c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scottinline bool DoesBeginUNCPath(const CHAR* text, 92c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott int start_offset, 93c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott int len, 94c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott bool strict_slashes) { 95c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott int remaining_len = len - start_offset; 96c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott if (remaining_len < 2) 97c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott return false; 98c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott 99c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott if (strict_slashes) 100c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott return text[start_offset] == '\\' && text[start_offset + 1] == '\\'; 101c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott return IsURLSlash(text[start_offset]) && IsURLSlash(text[start_offset + 1]); 102c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott} 103c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott 104c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott#endif // WIN32 105c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott 106c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott} // namespace url_parse 107c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott 108c7f5f8508d98d5952d42ed7648c2a8f30a4da156Patrick Scott#endif // GOOGLEURL_SRC_URL_FILE_H__ 109