Index: net/base/hash_value.h |
=================================================================== |
--- net/base/hash_value.h (revision 0) |
+++ net/base/hash_value.h (revision 0) |
@@ -0,0 +1,113 @@ |
+// Copyright (c) 2012 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 NET_BASE_HASH_VALUE_H_ |
+#define NET_BASE_HASH_VALUE_H_ |
+ |
+#include <string.h> |
+ |
+#include <string> |
+#include <vector> |
+ |
+#include "base/basictypes.h" |
+#include "build/build_config.h" |
+#include "net/base/net_export.h" |
+ |
+namespace net { |
+ |
+// Types (SHA1HashValue, SHA256HashValue, HashValue, HashValueVector) |
Ryan Sleevi
2012/11/13 19:02:32
Drop this comment (and the other 'sectional' notat
unsafe
2012/11/13 23:20:18
Done.
|
+ |
+struct NET_EXPORT SHA1HashValue { |
+ bool Equals(const SHA1HashValue& other) const { |
+ return memcmp(data, other.data, sizeof(data)) == 0; |
+ } |
+ |
+ unsigned char data[20]; |
+}; |
+ |
+struct NET_EXPORT SHA256HashValue { |
+ bool Equals(const SHA256HashValue& other) const { |
+ return memcmp(data, other.data, sizeof(data)) == 0; |
+ } |
+ |
+ unsigned char data[32]; |
+}; |
+ |
+enum HashValueTag { |
+ HASH_VALUE_SHA1, |
+ HASH_VALUE_SHA256, |
+ |
+ // This must always be last. |
+ HASH_VALUE_TAGS_COUNT |
+}; |
+ |
+class NET_EXPORT HashValue { |
+ public: |
+ explicit HashValue(HashValueTag tag) : tag(tag) {} |
+ HashValue() : tag(HASH_VALUE_SHA1) {} |
+ |
+ bool Equals(const HashValue& other) const; |
+ |
+ // Parse/write in this format: "sha1/Guzek9lMwR3KeIS8wwS9gBvVtIg=" |
Ryan Sleevi
2012/11/13 19:02:32
nit: Can you expand on the comments for these meth
unsafe
2012/11/13 23:20:18
Done.
|
+ bool FromString(const std::string& input); |
Ryan Sleevi
2012/11/13 19:02:32
API: suggestion: Use (const base::StringPiece& inp
unsafe
2012/11/13 23:20:18
I don't know what the conventions are around std::
|
+ std::string ToString() const; |
+ |
+ size_t size() const; |
+ unsigned char* data(); |
+ const unsigned char* data() const; |
+ |
+ HashValueTag tag; |
+ |
+ private: |
+ union { |
+ SHA1HashValue sha1; |
+ SHA256HashValue sha256; |
+ } fingerprint; |
+}; |
+ |
+typedef std::vector<HashValue> HashValueVector; |
+ |
+ |
+// Predicates for types |
+ |
+class NET_EXPORT SHA1HashValueLessThan { |
Ryan Sleevi
2012/11/13 19:02:32
As far as NET_EXPORT goes, I don't believe any of
unsafe
2012/11/13 23:20:18
I removed NET_EXPORT from this whole file, apparen
Ryan Sleevi
2012/11/13 23:32:05
I'm not sure that's true, or you may not be buildi
|
+ public: |
+ bool operator()(const SHA1HashValue& lhs, |
+ const SHA1HashValue& rhs) const { |
+ return memcmp(lhs.data, rhs.data, sizeof(lhs.data)) < 0; |
+ } |
+}; |
+ |
+class NET_EXPORT SHA256HashValueLessThan { |
+ public: |
+ bool operator()(const SHA256HashValue& lhs, |
+ const SHA256HashValue& rhs) const { |
+ return memcmp(lhs.data, rhs.data, sizeof(lhs.data)) < 0; |
+ } |
+}; |
+ |
+class NET_EXPORT HashValuesEqual { |
+ public: |
+ explicit HashValuesEqual(const HashValue& fingerprint) : |
+ fingerprint_(fingerprint) {} |
+ |
+ bool operator()(const HashValue& other) const { |
+ return fingerprint_.Equals(other); |
+ } |
+ |
+ const HashValue& fingerprint_; |
+}; |
+ |
+ |
+// Misc hash-related funcs |
palmer
2012/11/13 19:35:04
NIT: s/funcs/functions./
unsafe
2012/11/13 23:20:18
Removed entire (sectional) comment.
|
+ |
+// IsSHA1HashInSortedArray returns true iff |hash| is in |array|, a sorted |
+// array of SHA1 hashes. |
+bool NET_EXPORT IsSHA1HashInSortedArray(const SHA1HashValue& hash, |
+ const uint8* array, |
+ size_t array_byte_len); |
+ |
+} // namespace net |
+ |
+#endif // NET_BASE_HASH_VALUE_H_ |