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-rw-r--r--security/sandbox/chromium/base/strings/string_number_conversions.cc485
1 files changed, 0 insertions, 485 deletions
diff --git a/security/sandbox/chromium/base/strings/string_number_conversions.cc b/security/sandbox/chromium/base/strings/string_number_conversions.cc
deleted file mode 100644
index 07248501e..000000000
--- a/security/sandbox/chromium/base/strings/string_number_conversions.cc
+++ /dev/null
@@ -1,485 +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.
-
-#include "base/strings/string_number_conversions.h"
-
-#include <ctype.h>
-#include <errno.h>
-#include <stdlib.h>
-#include <wctype.h>
-
-#include <limits>
-
-#include "base/logging.h"
-#include "base/numerics/safe_conversions.h"
-#include "base/numerics/safe_math.h"
-#include "base/scoped_clear_errno.h"
-#include "base/strings/utf_string_conversions.h"
-#include "base/third_party/dmg_fp/dmg_fp.h"
-
-namespace base {
-
-namespace {
-
-template <typename STR, typename INT>
-struct IntToStringT {
- static STR IntToString(INT value) {
- // log10(2) ~= 0.3 bytes needed per bit or per byte log10(2**8) ~= 2.4.
- // So round up to allocate 3 output characters per byte, plus 1 for '-'.
- const size_t kOutputBufSize =
- 3 * sizeof(INT) + std::numeric_limits<INT>::is_signed;
-
- // Create the string in a temporary buffer, write it back to front, and
- // then return the substr of what we ended up using.
- using CHR = typename STR::value_type;
- CHR outbuf[kOutputBufSize];
-
- // The ValueOrDie call below can never fail, because UnsignedAbs is valid
- // for all valid inputs.
- auto res = CheckedNumeric<INT>(value).UnsignedAbs().ValueOrDie();
-
- CHR* end = outbuf + kOutputBufSize;
- CHR* i = end;
- do {
- --i;
- DCHECK(i != outbuf);
- *i = static_cast<CHR>((res % 10) + '0');
- res /= 10;
- } while (res != 0);
- if (IsValueNegative(value)) {
- --i;
- DCHECK(i != outbuf);
- *i = static_cast<CHR>('-');
- }
- return STR(i, end);
- }
-};
-
-// Utility to convert a character to a digit in a given base
-template<typename CHAR, int BASE, bool BASE_LTE_10> class BaseCharToDigit {
-};
-
-// Faster specialization for bases <= 10
-template<typename CHAR, int BASE> class BaseCharToDigit<CHAR, BASE, true> {
- public:
- static bool Convert(CHAR c, uint8_t* digit) {
- if (c >= '0' && c < '0' + BASE) {
- *digit = static_cast<uint8_t>(c - '0');
- return true;
- }
- return false;
- }
-};
-
-// Specialization for bases where 10 < base <= 36
-template<typename CHAR, int BASE> class BaseCharToDigit<CHAR, BASE, false> {
- public:
- static bool Convert(CHAR c, uint8_t* digit) {
- if (c >= '0' && c <= '9') {
- *digit = c - '0';
- } else if (c >= 'a' && c < 'a' + BASE - 10) {
- *digit = c - 'a' + 10;
- } else if (c >= 'A' && c < 'A' + BASE - 10) {
- *digit = c - 'A' + 10;
- } else {
- return false;
- }
- return true;
- }
-};
-
-template <int BASE, typename CHAR>
-bool CharToDigit(CHAR c, uint8_t* digit) {
- return BaseCharToDigit<CHAR, BASE, BASE <= 10>::Convert(c, digit);
-}
-
-// There is an IsUnicodeWhitespace for wchars defined in string_util.h, but it
-// is locale independent, whereas the functions we are replacing were
-// locale-dependent. TBD what is desired, but for the moment let's not
-// introduce a change in behaviour.
-template<typename CHAR> class WhitespaceHelper {
-};
-
-template<> class WhitespaceHelper<char> {
- public:
- static bool Invoke(char c) {
- return 0 != isspace(static_cast<unsigned char>(c));
- }
-};
-
-template<> class WhitespaceHelper<char16> {
- public:
- static bool Invoke(char16 c) {
- return 0 != iswspace(c);
- }
-};
-
-template<typename CHAR> bool LocalIsWhitespace(CHAR c) {
- return WhitespaceHelper<CHAR>::Invoke(c);
-}
-
-// IteratorRangeToNumberTraits should provide:
-// - a typedef for iterator_type, the iterator type used as input.
-// - a typedef for value_type, the target numeric type.
-// - static functions min, max (returning the minimum and maximum permitted
-// values)
-// - constant kBase, the base in which to interpret the input
-template<typename IteratorRangeToNumberTraits>
-class IteratorRangeToNumber {
- public:
- typedef IteratorRangeToNumberTraits traits;
- typedef typename traits::iterator_type const_iterator;
- typedef typename traits::value_type value_type;
-
- // Generalized iterator-range-to-number conversion.
- //
- static bool Invoke(const_iterator begin,
- const_iterator end,
- value_type* output) {
- bool valid = true;
-
- while (begin != end && LocalIsWhitespace(*begin)) {
- valid = false;
- ++begin;
- }
-
- if (begin != end && *begin == '-') {
- if (!std::numeric_limits<value_type>::is_signed) {
- valid = false;
- } else if (!Negative::Invoke(begin + 1, end, output)) {
- valid = false;
- }
- } else {
- if (begin != end && *begin == '+') {
- ++begin;
- }
- if (!Positive::Invoke(begin, end, output)) {
- valid = false;
- }
- }
-
- return valid;
- }
-
- private:
- // Sign provides:
- // - a static function, CheckBounds, that determines whether the next digit
- // causes an overflow/underflow
- // - a static function, Increment, that appends the next digit appropriately
- // according to the sign of the number being parsed.
- template<typename Sign>
- class Base {
- public:
- static bool Invoke(const_iterator begin, const_iterator end,
- typename traits::value_type* output) {
- *output = 0;
-
- if (begin == end) {
- return false;
- }
-
- // Note: no performance difference was found when using template
- // specialization to remove this check in bases other than 16
- if (traits::kBase == 16 && end - begin > 2 && *begin == '0' &&
- (*(begin + 1) == 'x' || *(begin + 1) == 'X')) {
- begin += 2;
- }
-
- for (const_iterator current = begin; current != end; ++current) {
- uint8_t new_digit = 0;
-
- if (!CharToDigit<traits::kBase>(*current, &new_digit)) {
- return false;
- }
-
- if (current != begin) {
- if (!Sign::CheckBounds(output, new_digit)) {
- return false;
- }
- *output *= traits::kBase;
- }
-
- Sign::Increment(new_digit, output);
- }
- return true;
- }
- };
-
- class Positive : public Base<Positive> {
- public:
- static bool CheckBounds(value_type* output, uint8_t new_digit) {
- if (*output > static_cast<value_type>(traits::max() / traits::kBase) ||
- (*output == static_cast<value_type>(traits::max() / traits::kBase) &&
- new_digit > traits::max() % traits::kBase)) {
- *output = traits::max();
- return false;
- }
- return true;
- }
- static void Increment(uint8_t increment, value_type* output) {
- *output += increment;
- }
- };
-
- class Negative : public Base<Negative> {
- public:
- static bool CheckBounds(value_type* output, uint8_t new_digit) {
- if (*output < traits::min() / traits::kBase ||
- (*output == traits::min() / traits::kBase &&
- new_digit > 0 - traits::min() % traits::kBase)) {
- *output = traits::min();
- return false;
- }
- return true;
- }
- static void Increment(uint8_t increment, value_type* output) {
- *output -= increment;
- }
- };
-};
-
-template<typename ITERATOR, typename VALUE, int BASE>
-class BaseIteratorRangeToNumberTraits {
- public:
- typedef ITERATOR iterator_type;
- typedef VALUE value_type;
- static value_type min() {
- return std::numeric_limits<value_type>::min();
- }
- static value_type max() {
- return std::numeric_limits<value_type>::max();
- }
- static const int kBase = BASE;
-};
-
-template<typename ITERATOR>
-class BaseHexIteratorRangeToIntTraits
- : public BaseIteratorRangeToNumberTraits<ITERATOR, int, 16> {
-};
-
-template <typename ITERATOR>
-class BaseHexIteratorRangeToUIntTraits
- : public BaseIteratorRangeToNumberTraits<ITERATOR, uint32_t, 16> {};
-
-template <typename ITERATOR>
-class BaseHexIteratorRangeToInt64Traits
- : public BaseIteratorRangeToNumberTraits<ITERATOR, int64_t, 16> {};
-
-template <typename ITERATOR>
-class BaseHexIteratorRangeToUInt64Traits
- : public BaseIteratorRangeToNumberTraits<ITERATOR, uint64_t, 16> {};
-
-typedef BaseHexIteratorRangeToIntTraits<StringPiece::const_iterator>
- HexIteratorRangeToIntTraits;
-
-typedef BaseHexIteratorRangeToUIntTraits<StringPiece::const_iterator>
- HexIteratorRangeToUIntTraits;
-
-typedef BaseHexIteratorRangeToInt64Traits<StringPiece::const_iterator>
- HexIteratorRangeToInt64Traits;
-
-typedef BaseHexIteratorRangeToUInt64Traits<StringPiece::const_iterator>
- HexIteratorRangeToUInt64Traits;
-
-template <typename STR>
-bool HexStringToBytesT(const STR& input, std::vector<uint8_t>* output) {
- DCHECK_EQ(output->size(), 0u);
- size_t count = input.size();
- if (count == 0 || (count % 2) != 0)
- return false;
- for (uintptr_t i = 0; i < count / 2; ++i) {
- uint8_t msb = 0; // most significant 4 bits
- uint8_t lsb = 0; // least significant 4 bits
- if (!CharToDigit<16>(input[i * 2], &msb) ||
- !CharToDigit<16>(input[i * 2 + 1], &lsb))
- return false;
- output->push_back((msb << 4) | lsb);
- }
- return true;
-}
-
-template <typename VALUE, int BASE>
-class StringPieceToNumberTraits
- : public BaseIteratorRangeToNumberTraits<StringPiece::const_iterator,
- VALUE,
- BASE> {
-};
-
-template <typename VALUE>
-bool StringToIntImpl(const StringPiece& input, VALUE* output) {
- return IteratorRangeToNumber<StringPieceToNumberTraits<VALUE, 10> >::Invoke(
- input.begin(), input.end(), output);
-}
-
-template <typename VALUE, int BASE>
-class StringPiece16ToNumberTraits
- : public BaseIteratorRangeToNumberTraits<StringPiece16::const_iterator,
- VALUE,
- BASE> {
-};
-
-template <typename VALUE>
-bool String16ToIntImpl(const StringPiece16& input, VALUE* output) {
- return IteratorRangeToNumber<StringPiece16ToNumberTraits<VALUE, 10> >::Invoke(
- input.begin(), input.end(), output);
-}
-
-} // namespace
-
-std::string IntToString(int value) {
- return IntToStringT<std::string, int>::IntToString(value);
-}
-
-string16 IntToString16(int value) {
- return IntToStringT<string16, int>::IntToString(value);
-}
-
-std::string UintToString(unsigned int value) {
- return IntToStringT<std::string, unsigned int>::IntToString(value);
-}
-
-string16 UintToString16(unsigned int value) {
- return IntToStringT<string16, unsigned int>::IntToString(value);
-}
-
-std::string Int64ToString(int64_t value) {
- return IntToStringT<std::string, int64_t>::IntToString(value);
-}
-
-string16 Int64ToString16(int64_t value) {
- return IntToStringT<string16, int64_t>::IntToString(value);
-}
-
-std::string Uint64ToString(uint64_t value) {
- return IntToStringT<std::string, uint64_t>::IntToString(value);
-}
-
-string16 Uint64ToString16(uint64_t value) {
- return IntToStringT<string16, uint64_t>::IntToString(value);
-}
-
-std::string SizeTToString(size_t value) {
- return IntToStringT<std::string, size_t>::IntToString(value);
-}
-
-string16 SizeTToString16(size_t value) {
- return IntToStringT<string16, size_t>::IntToString(value);
-}
-
-std::string DoubleToString(double value) {
- // According to g_fmt.cc, it is sufficient to declare a buffer of size 32.
- char buffer[32];
- dmg_fp::g_fmt(buffer, value);
- return std::string(buffer);
-}
-
-bool StringToInt(const StringPiece& input, int* output) {
- return StringToIntImpl(input, output);
-}
-
-bool StringToInt(const StringPiece16& input, int* output) {
- return String16ToIntImpl(input, output);
-}
-
-bool StringToUint(const StringPiece& input, unsigned* output) {
- return StringToIntImpl(input, output);
-}
-
-bool StringToUint(const StringPiece16& input, unsigned* output) {
- return String16ToIntImpl(input, output);
-}
-
-bool StringToInt64(const StringPiece& input, int64_t* output) {
- return StringToIntImpl(input, output);
-}
-
-bool StringToInt64(const StringPiece16& input, int64_t* output) {
- return String16ToIntImpl(input, output);
-}
-
-bool StringToUint64(const StringPiece& input, uint64_t* output) {
- return StringToIntImpl(input, output);
-}
-
-bool StringToUint64(const StringPiece16& input, uint64_t* output) {
- return String16ToIntImpl(input, output);
-}
-
-bool StringToSizeT(const StringPiece& input, size_t* output) {
- return StringToIntImpl(input, output);
-}
-
-bool StringToSizeT(const StringPiece16& input, size_t* output) {
- return String16ToIntImpl(input, output);
-}
-
-bool StringToDouble(const std::string& input, double* output) {
- // Thread-safe? It is on at least Mac, Linux, and Windows.
- ScopedClearErrno clear_errno;
-
- char* endptr = NULL;
- *output = dmg_fp::strtod(input.c_str(), &endptr);
-
- // Cases to return false:
- // - If errno is ERANGE, there was an overflow or underflow.
- // - If the input string is empty, there was nothing to parse.
- // - If endptr does not point to the end of the string, there are either
- // characters remaining in the string after a parsed number, or the string
- // does not begin with a parseable number. endptr is compared to the
- // expected end given the string's stated length to correctly catch cases
- // where the string contains embedded NUL characters.
- // - If the first character is a space, there was leading whitespace
- return errno == 0 &&
- !input.empty() &&
- input.c_str() + input.length() == endptr &&
- !isspace(input[0]);
-}
-
-// Note: if you need to add String16ToDouble, first ask yourself if it's
-// really necessary. If it is, probably the best implementation here is to
-// convert to 8-bit and then use the 8-bit version.
-
-// Note: if you need to add an iterator range version of StringToDouble, first
-// ask yourself if it's really necessary. If it is, probably the best
-// implementation here is to instantiate a string and use the string version.
-
-std::string HexEncode(const void* bytes, size_t size) {
- static const char kHexChars[] = "0123456789ABCDEF";
-
- // Each input byte creates two output hex characters.
- std::string ret(size * 2, '\0');
-
- for (size_t i = 0; i < size; ++i) {
- char b = reinterpret_cast<const char*>(bytes)[i];
- ret[(i * 2)] = kHexChars[(b >> 4) & 0xf];
- ret[(i * 2) + 1] = kHexChars[b & 0xf];
- }
- return ret;
-}
-
-bool HexStringToInt(const StringPiece& input, int* output) {
- return IteratorRangeToNumber<HexIteratorRangeToIntTraits>::Invoke(
- input.begin(), input.end(), output);
-}
-
-bool HexStringToUInt(const StringPiece& input, uint32_t* output) {
- return IteratorRangeToNumber<HexIteratorRangeToUIntTraits>::Invoke(
- input.begin(), input.end(), output);
-}
-
-bool HexStringToInt64(const StringPiece& input, int64_t* output) {
- return IteratorRangeToNumber<HexIteratorRangeToInt64Traits>::Invoke(
- input.begin(), input.end(), output);
-}
-
-bool HexStringToUInt64(const StringPiece& input, uint64_t* output) {
- return IteratorRangeToNumber<HexIteratorRangeToUInt64Traits>::Invoke(
- input.begin(), input.end(), output);
-}
-
-bool HexStringToBytes(const std::string& input, std::vector<uint8_t>* output) {
- return HexStringToBytesT(input, output);
-}
-
-} // namespace base
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