| /* |
| * Copyright 2012 Google Inc. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| // Author: jefftk@google.com (Jeff Kaufman) |
| |
| #ifndef NET_INSTAWEB_REWRITER_PUBLIC_FILE_LOAD_MAPPING_H_ |
| #define NET_INSTAWEB_REWRITER_PUBLIC_FILE_LOAD_MAPPING_H_ |
| |
| #include "pagespeed/kernel/base/basictypes.h" |
| #include "pagespeed/kernel/base/manually_ref_counted.h" |
| #include "pagespeed/kernel/base/string.h" |
| #include "pagespeed/kernel/base/string_util.h" |
| #include "pagespeed/kernel/util/re2.h" |
| |
| namespace net_instaweb { |
| |
| // Class for storing a mapping from a URL to a filesystem path, for use by |
| // FileLoadPolicy. |
| class FileLoadMapping : public ManuallyRefCounted { |
| public: |
| virtual ~FileLoadMapping(); |
| |
| // If this mapping applies to this url, put the mapped path into filename and |
| // return true. Otherwise return false. |
| virtual bool Substitute(StringPiece url, GoogleString* filename) const = 0; |
| }; |
| |
| // A simple mapping from a prefix in url-space to a prefix in filesystem-space. |
| // For example, if we had: |
| // FileLoadMappingLiteral("http://example.com/foo/bar/", "/foobar/") |
| // that would mean http://example.com/foo/bar/baz would be found on the |
| // filesystem at /foobar/baz. |
| class FileLoadMappingLiteral : public FileLoadMapping { |
| public: |
| FileLoadMappingLiteral(const GoogleString& url_prefix, |
| const GoogleString& filename_prefix) |
| : url_prefix_(url_prefix), |
| filename_prefix_(filename_prefix) {} |
| |
| virtual bool Substitute(StringPiece url, GoogleString* filename) const; |
| |
| private: |
| const GoogleString url_prefix_; |
| const GoogleString filename_prefix_; |
| |
| DISALLOW_COPY_AND_ASSIGN(FileLoadMappingLiteral); |
| }; |
| |
| // If a mapping is too complicated to represent with a simple literal with |
| // FileLoadMappingLiteral, you can use a regexp mapper. For example, if we had: |
| // FileLoadMappingRegexp("http://example.com/([^/*])/bar/", "/var/bar/\\1/") |
| // that would mean http://example.com/foo/bar/baz would be found on the |
| // filesystem at /var/bar/foo/baz. |
| class FileLoadMappingRegexp : public FileLoadMapping { |
| public: |
| FileLoadMappingRegexp(const GoogleString& url_regexp, |
| const GoogleString& filename_prefix) |
| : url_regexp_(url_regexp), |
| url_regexp_str_(url_regexp), |
| filename_prefix_(filename_prefix) {} |
| |
| virtual bool Substitute(StringPiece url, GoogleString* filename) const; |
| |
| private: |
| const RE2 url_regexp_; |
| // RE2s can't be copied, so we need to keep the string around. |
| const GoogleString url_regexp_str_; |
| const GoogleString filename_prefix_; |
| |
| DISALLOW_COPY_AND_ASSIGN(FileLoadMappingRegexp); |
| }; |
| |
| } // namespace net_instaweb |
| |
| #endif // NET_INSTAWEB_REWRITER_PUBLIC_FILE_LOAD_MAPPING_H_ |
| |