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Diffstat (limited to 'security/sandbox/chromium/base/strings/string_piece.h')
| -rw-r--r-- | security/sandbox/chromium/base/strings/string_piece.h | 469 |
1 files changed, 0 insertions, 469 deletions
diff --git a/security/sandbox/chromium/base/strings/string_piece.h b/security/sandbox/chromium/base/strings/string_piece.h deleted file mode 100644 index 31e7596d1..000000000 --- a/security/sandbox/chromium/base/strings/string_piece.h +++ /dev/null @@ -1,469 +0,0 @@ -// 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. -// Copied from strings/stringpiece.h with modifications -// -// A string-like object that points to a sized piece of memory. -// -// You can use StringPiece as a function or method parameter. A StringPiece -// parameter can receive a double-quoted string literal argument, a "const -// char*" argument, a string argument, or a StringPiece argument with no data -// copying. Systematic use of StringPiece for arguments reduces data -// copies and strlen() calls. -// -// Prefer passing StringPieces by value: -// void MyFunction(StringPiece arg); -// If circumstances require, you may also pass by const reference: -// void MyFunction(const StringPiece& arg); // not preferred -// Both of these have the same lifetime semantics. Passing by value -// generates slightly smaller code. For more discussion, Googlers can see -// the thread go/stringpiecebyvalue on c-users. - -#ifndef BASE_STRINGS_STRING_PIECE_H_ -#define BASE_STRINGS_STRING_PIECE_H_ - -#include <stddef.h> - -#include <iosfwd> -#include <string> - -#include "base/base_export.h" -#include "base/containers/hash_tables.h" -#include "base/logging.h" -#include "base/strings/string16.h" - -namespace base { - -template <typename STRING_TYPE> class BasicStringPiece; -typedef BasicStringPiece<std::string> StringPiece; -typedef BasicStringPiece<string16> StringPiece16; - -// internal -------------------------------------------------------------------- - -// Many of the StringPiece functions use different implementations for the -// 8-bit and 16-bit versions, and we don't want lots of template expansions in -// this (very common) header that will slow down compilation. -// -// So here we define overloaded functions called by the StringPiece template. -// For those that share an implementation, the two versions will expand to a -// template internal to the .cc file. -namespace internal { - -BASE_EXPORT void CopyToString(const StringPiece& self, std::string* target); -BASE_EXPORT void CopyToString(const StringPiece16& self, string16* target); - -BASE_EXPORT void AppendToString(const StringPiece& self, std::string* target); -BASE_EXPORT void AppendToString(const StringPiece16& self, string16* target); - -BASE_EXPORT size_t copy(const StringPiece& self, - char* buf, - size_t n, - size_t pos); -BASE_EXPORT size_t copy(const StringPiece16& self, - char16* buf, - size_t n, - size_t pos); - -BASE_EXPORT size_t find(const StringPiece& self, - const StringPiece& s, - size_t pos); -BASE_EXPORT size_t find(const StringPiece16& self, - const StringPiece16& s, - size_t pos); -BASE_EXPORT size_t find(const StringPiece& self, - char c, - size_t pos); -BASE_EXPORT size_t find(const StringPiece16& self, - char16 c, - size_t pos); - -BASE_EXPORT size_t rfind(const StringPiece& self, - const StringPiece& s, - size_t pos); -BASE_EXPORT size_t rfind(const StringPiece16& self, - const StringPiece16& s, - size_t pos); -BASE_EXPORT size_t rfind(const StringPiece& self, - char c, - size_t pos); -BASE_EXPORT size_t rfind(const StringPiece16& self, - char16 c, - size_t pos); - -BASE_EXPORT size_t find_first_of(const StringPiece& self, - const StringPiece& s, - size_t pos); -BASE_EXPORT size_t find_first_of(const StringPiece16& self, - const StringPiece16& s, - size_t pos); - -BASE_EXPORT size_t find_first_not_of(const StringPiece& self, - const StringPiece& s, - size_t pos); -BASE_EXPORT size_t find_first_not_of(const StringPiece16& self, - const StringPiece16& s, - size_t pos); -BASE_EXPORT size_t find_first_not_of(const StringPiece& self, - char c, - size_t pos); -BASE_EXPORT size_t find_first_not_of(const StringPiece16& self, - char16 c, - size_t pos); - -BASE_EXPORT size_t find_last_of(const StringPiece& self, - const StringPiece& s, - size_t pos); -BASE_EXPORT size_t find_last_of(const StringPiece16& self, - const StringPiece16& s, - size_t pos); -BASE_EXPORT size_t find_last_of(const StringPiece& self, - char c, - size_t pos); -BASE_EXPORT size_t find_last_of(const StringPiece16& self, - char16 c, - size_t pos); - -BASE_EXPORT size_t find_last_not_of(const StringPiece& self, - const StringPiece& s, - size_t pos); -BASE_EXPORT size_t find_last_not_of(const StringPiece16& self, - const StringPiece16& s, - size_t pos); -BASE_EXPORT size_t find_last_not_of(const StringPiece16& self, - char16 c, - size_t pos); -BASE_EXPORT size_t find_last_not_of(const StringPiece& self, - char c, - size_t pos); - -BASE_EXPORT StringPiece substr(const StringPiece& self, - size_t pos, - size_t n); -BASE_EXPORT StringPiece16 substr(const StringPiece16& self, - size_t pos, - size_t n); - -#if DCHECK_IS_ON() -// Asserts that begin <= end to catch some errors with iterator usage. -BASE_EXPORT void AssertIteratorsInOrder(std::string::const_iterator begin, - std::string::const_iterator end); -BASE_EXPORT void AssertIteratorsInOrder(string16::const_iterator begin, - string16::const_iterator end); -#endif - -} // namespace internal - -// BasicStringPiece ------------------------------------------------------------ - -// Defines the types, methods, operators, and data members common to both -// StringPiece and StringPiece16. Do not refer to this class directly, but -// rather to BasicStringPiece, StringPiece, or StringPiece16. -// -// This is templatized by string class type rather than character type, so -// BasicStringPiece<std::string> or BasicStringPiece<base::string16>. -template <typename STRING_TYPE> class BasicStringPiece { - public: - // Standard STL container boilerplate. - typedef size_t size_type; - typedef typename STRING_TYPE::value_type value_type; - typedef const value_type* pointer; - typedef const value_type& reference; - typedef const value_type& const_reference; - typedef ptrdiff_t difference_type; - typedef const value_type* const_iterator; - typedef std::reverse_iterator<const_iterator> const_reverse_iterator; - - static const size_type npos; - - public: - // We provide non-explicit singleton constructors so users can pass - // in a "const char*" or a "string" wherever a "StringPiece" is - // expected (likewise for char16, string16, StringPiece16). - BasicStringPiece() : ptr_(NULL), length_(0) {} - BasicStringPiece(const value_type* str) - : ptr_(str), - length_((str == NULL) ? 0 : STRING_TYPE::traits_type::length(str)) {} - BasicStringPiece(const STRING_TYPE& str) - : ptr_(str.data()), length_(str.size()) {} - BasicStringPiece(const value_type* offset, size_type len) - : ptr_(offset), length_(len) {} - BasicStringPiece(const typename STRING_TYPE::const_iterator& begin, - const typename STRING_TYPE::const_iterator& end) { -#if DCHECK_IS_ON() - // This assertion is done out-of-line to avoid bringing in logging.h and - // instantiating logging macros for every instantiation. - internal::AssertIteratorsInOrder(begin, end); -#endif - length_ = static_cast<size_t>(std::distance(begin, end)); - - // The length test before assignment is to avoid dereferencing an iterator - // that may point to the end() of a string. - ptr_ = length_ > 0 ? &*begin : nullptr; - } - - // data() may return a pointer to a buffer with embedded NULs, and the - // returned buffer may or may not be null terminated. Therefore it is - // typically a mistake to pass data() to a routine that expects a NUL - // terminated string. - const value_type* data() const { return ptr_; } - size_type size() const { return length_; } - size_type length() const { return length_; } - bool empty() const { return length_ == 0; } - - void clear() { - ptr_ = NULL; - length_ = 0; - } - void set(const value_type* data, size_type len) { - ptr_ = data; - length_ = len; - } - void set(const value_type* str) { - ptr_ = str; - length_ = str ? STRING_TYPE::traits_type::length(str) : 0; - } - - value_type operator[](size_type i) const { return ptr_[i]; } - - void remove_prefix(size_type n) { - ptr_ += n; - length_ -= n; - } - - void remove_suffix(size_type n) { - length_ -= n; - } - - int compare(const BasicStringPiece<STRING_TYPE>& x) const { - int r = wordmemcmp( - ptr_, x.ptr_, (length_ < x.length_ ? length_ : x.length_)); - if (r == 0) { - if (length_ < x.length_) r = -1; - else if (length_ > x.length_) r = +1; - } - return r; - } - - STRING_TYPE as_string() const { - // std::string doesn't like to take a NULL pointer even with a 0 size. - return empty() ? STRING_TYPE() : STRING_TYPE(data(), size()); - } - - const_iterator begin() const { return ptr_; } - const_iterator end() const { return ptr_ + length_; } - const_reverse_iterator rbegin() const { - return const_reverse_iterator(ptr_ + length_); - } - const_reverse_iterator rend() const { - return const_reverse_iterator(ptr_); - } - - size_type max_size() const { return length_; } - size_type capacity() const { return length_; } - - static int wordmemcmp(const value_type* p, - const value_type* p2, - size_type N) { - return STRING_TYPE::traits_type::compare(p, p2, N); - } - - // Sets the value of the given string target type to be the current string. - // This saves a temporary over doing |a = b.as_string()| - void CopyToString(STRING_TYPE* target) const { - internal::CopyToString(*this, target); - } - - void AppendToString(STRING_TYPE* target) const { - internal::AppendToString(*this, target); - } - - size_type copy(value_type* buf, size_type n, size_type pos = 0) const { - return internal::copy(*this, buf, n, pos); - } - - // Does "this" start with "x" - bool starts_with(const BasicStringPiece& x) const { - return ((this->length_ >= x.length_) && - (wordmemcmp(this->ptr_, x.ptr_, x.length_) == 0)); - } - - // Does "this" end with "x" - bool ends_with(const BasicStringPiece& x) const { - return ((this->length_ >= x.length_) && - (wordmemcmp(this->ptr_ + (this->length_-x.length_), - x.ptr_, x.length_) == 0)); - } - - // find: Search for a character or substring at a given offset. - size_type find(const BasicStringPiece<STRING_TYPE>& s, - size_type pos = 0) const { - return internal::find(*this, s, pos); - } - size_type find(value_type c, size_type pos = 0) const { - return internal::find(*this, c, pos); - } - - // rfind: Reverse find. - size_type rfind(const BasicStringPiece& s, - size_type pos = BasicStringPiece::npos) const { - return internal::rfind(*this, s, pos); - } - size_type rfind(value_type c, size_type pos = BasicStringPiece::npos) const { - return internal::rfind(*this, c, pos); - } - - // find_first_of: Find the first occurence of one of a set of characters. - size_type find_first_of(const BasicStringPiece& s, - size_type pos = 0) const { - return internal::find_first_of(*this, s, pos); - } - size_type find_first_of(value_type c, size_type pos = 0) const { - return find(c, pos); - } - - // find_first_not_of: Find the first occurence not of a set of characters. - size_type find_first_not_of(const BasicStringPiece& s, - size_type pos = 0) const { - return internal::find_first_not_of(*this, s, pos); - } - size_type find_first_not_of(value_type c, size_type pos = 0) const { - return internal::find_first_not_of(*this, c, pos); - } - - // find_last_of: Find the last occurence of one of a set of characters. - size_type find_last_of(const BasicStringPiece& s, - size_type pos = BasicStringPiece::npos) const { - return internal::find_last_of(*this, s, pos); - } - size_type find_last_of(value_type c, - size_type pos = BasicStringPiece::npos) const { - return rfind(c, pos); - } - - // find_last_not_of: Find the last occurence not of a set of characters. - size_type find_last_not_of(const BasicStringPiece& s, - size_type pos = BasicStringPiece::npos) const { - return internal::find_last_not_of(*this, s, pos); - } - size_type find_last_not_of(value_type c, - size_type pos = BasicStringPiece::npos) const { - return internal::find_last_not_of(*this, c, pos); - } - - // substr. - BasicStringPiece substr(size_type pos, - size_type n = BasicStringPiece::npos) const { - return internal::substr(*this, pos, n); - } - - protected: - const value_type* ptr_; - size_type length_; -}; - -template <typename STRING_TYPE> -const typename BasicStringPiece<STRING_TYPE>::size_type -BasicStringPiece<STRING_TYPE>::npos = - typename BasicStringPiece<STRING_TYPE>::size_type(-1); - -// MSVC doesn't like complex extern templates and DLLs. -#if !defined(COMPILER_MSVC) -extern template class BASE_EXPORT BasicStringPiece<std::string>; -extern template class BASE_EXPORT BasicStringPiece<string16>; -#endif - -// StingPiece operators -------------------------------------------------------- - -BASE_EXPORT bool operator==(const StringPiece& x, const StringPiece& y); - -inline bool operator!=(const StringPiece& x, const StringPiece& y) { - return !(x == y); -} - -inline bool operator<(const StringPiece& x, const StringPiece& y) { - const int r = StringPiece::wordmemcmp( - x.data(), y.data(), (x.size() < y.size() ? x.size() : y.size())); - return ((r < 0) || ((r == 0) && (x.size() < y.size()))); -} - -inline bool operator>(const StringPiece& x, const StringPiece& y) { - return y < x; -} - -inline bool operator<=(const StringPiece& x, const StringPiece& y) { - return !(x > y); -} - -inline bool operator>=(const StringPiece& x, const StringPiece& y) { - return !(x < y); -} - -// StringPiece16 operators ----------------------------------------------------- - -inline bool operator==(const StringPiece16& x, const StringPiece16& y) { - if (x.size() != y.size()) - return false; - - return StringPiece16::wordmemcmp(x.data(), y.data(), x.size()) == 0; -} - -inline bool operator!=(const StringPiece16& x, const StringPiece16& y) { - return !(x == y); -} - -inline bool operator<(const StringPiece16& x, const StringPiece16& y) { - const int r = StringPiece16::wordmemcmp( - x.data(), y.data(), (x.size() < y.size() ? x.size() : y.size())); - return ((r < 0) || ((r == 0) && (x.size() < y.size()))); -} - -inline bool operator>(const StringPiece16& x, const StringPiece16& y) { - return y < x; -} - -inline bool operator<=(const StringPiece16& x, const StringPiece16& y) { - return !(x > y); -} - -inline bool operator>=(const StringPiece16& x, const StringPiece16& y) { - return !(x < y); -} - -BASE_EXPORT std::ostream& operator<<(std::ostream& o, - const StringPiece& piece); - -} // namespace base - -// Hashing --------------------------------------------------------------------- - -// We provide appropriate hash functions so StringPiece and StringPiece16 can -// be used as keys in hash sets and maps. - -// This hash function is copied from base/containers/hash_tables.h. We don't -// use the ones already defined for string and string16 directly because it -// would require the string constructors to be called, which we don't want. -#define HASH_STRING_PIECE(StringPieceType, string_piece) \ - std::size_t result = 0; \ - for (StringPieceType::const_iterator i = string_piece.begin(); \ - i != string_piece.end(); ++i) \ - result = (result * 131) + *i; \ - return result; \ - -namespace BASE_HASH_NAMESPACE { - -template<> -struct hash<base::StringPiece> { - std::size_t operator()(const base::StringPiece& sp) const { - HASH_STRING_PIECE(base::StringPiece, sp); - } -}; -template<> -struct hash<base::StringPiece16> { - std::size_t operator()(const base::StringPiece16& sp16) const { - HASH_STRING_PIECE(base::StringPiece16, sp16); - } -}; - -} // namespace BASE_HASH_NAMESPACE - -#endif // BASE_STRINGS_STRING_PIECE_H_ |