The Tor Browser: ipc/chromium/src/base/string_util.cc@6474c204b198 (annotated)

ipc/chromium/src/base/string_util.cc@6474c204b198 (annotated)

ipc/chromium/src/base/string_util.cc

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 // Copyright (c) 2006-2008 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/string_util.h"
 #include "build/build_config.h"
 #include <ctype.h>
 #include <errno.h>
 #include <math.h>
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <time.h>
 #include <wchar.h>
 #include <wctype.h>
 #include <algorithm>
 #include <vector>
 #include "base/basictypes.h"
 #include "base/logging.h"
 #include "base/singleton.h"
 namespace {
 // Force the singleton used by Empty[W]String[16] to be a unique type. This
 // prevents other code that might accidentally use Singleton<string> from
 // getting our internal one.
 struct EmptyStrings {
   EmptyStrings() {}
   const std::string s;
   const std::wstring ws;
   const string16 s16;
 };
 // Hack to convert any char-like type to its unsigned counterpart.
 // For example, it will convert char, signed char and unsigned char to unsigned
 // char.
 template<typename T>
 struct ToUnsigned {
   typedef T Unsigned;
 };
 template<>
 struct ToUnsigned<char> {
   typedef unsigned char Unsigned;
 };
 template<>
 struct ToUnsigned<signed char> {
   typedef unsigned char Unsigned;
 };
 template<>
 struct ToUnsigned<wchar_t> {
 #if defined(WCHAR_T_IS_UTF16)
   typedef unsigned short Unsigned;
 #elif defined(WCHAR_T_IS_UTF32)
   typedef uint32_t Unsigned;
 #endif
 };
 template<>
 struct ToUnsigned<short> {
   typedef unsigned short Unsigned;
 };
 // Generalized string-to-number conversion.
 //
 // StringToNumberTraits should provide:
 //  - a typedef for string_type, the STL string type used as input.
 //  - a typedef for value_type, the target numeric type.
 //  - a static function, convert_func, which dispatches to an appropriate
 //    strtol-like function and returns type value_type.
 //  - a static function, valid_func, which validates |input| and returns a bool
 //    indicating whether it is in proper form.  This is used to check for
 //    conditions that convert_func tolerates but should result in
 //    StringToNumber returning false.  For strtol-like funtions, valid_func
 //    should check for leading whitespace.
 template<typename StringToNumberTraits>
 bool StringToNumber(const typename StringToNumberTraits::string_type& input,
                     typename StringToNumberTraits::value_type* output) {
   typedef StringToNumberTraits traits;
   errno = 0;  // Thread-safe?  It is on at least Mac, Linux, and Windows.
   typename traits::string_type::value_type* endptr = NULL;
   typename traits::value_type value = traits::convert_func(input.c_str(),
                                                            &endptr);
   *output = value;
   // 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.
   //  - valid_func determines that the input is not in preferred form.
   return errno == 0 &&
          !input.empty() &&
          input.c_str() + input.length() == endptr &&
          traits::valid_func(input);
 }
 class StringToLongTraits {
  public:
   typedef std::string string_type;
   typedef long value_type;
   static const int kBase = 10;
   static inline value_type convert_func(const string_type::value_type* str,
                                         string_type::value_type** endptr) {
     return strtol(str, endptr, kBase);
   }
   static inline bool valid_func(const string_type& str) {
     return !str.empty() && !isspace(str[0]);
   }
 };
 class String16ToLongTraits {
  public:
   typedef string16 string_type;
   typedef long value_type;
   static const int kBase = 10;
   static inline value_type convert_func(const string_type::value_type* str,
                                         string_type::value_type** endptr) {
 #if defined(WCHAR_T_IS_UTF16)
     return wcstol(str, endptr, kBase);
 #elif defined(WCHAR_T_IS_UTF32)
     std::string ascii_string = UTF16ToASCII(string16(str));
     char* ascii_end = NULL;
     value_type ret = strtol(ascii_string.c_str(), &ascii_end, kBase);
     if (ascii_string.c_str() + ascii_string.length() == ascii_end) {
       *endptr =
           const_cast<string_type::value_type*>(str) + ascii_string.length();
     }
     return ret;
 #endif
   }
   static inline bool valid_func(const string_type& str) {
     return !str.empty() && !iswspace(str[0]);
   }
 };
 class StringToInt64Traits {
  public:
   typedef std::string string_type;
   typedef int64_t value_type;
   static const int kBase = 10;
   static inline value_type convert_func(const string_type::value_type* str,
                                         string_type::value_type** endptr) {
 #ifdef OS_WIN
     return _strtoi64(str, endptr, kBase);
 #else  // assume OS_POSIX
     return strtoll(str, endptr, kBase);
 #endif
   }
   static inline bool valid_func(const string_type& str) {
     return !str.empty() && !isspace(str[0]);
   }
 };
 class String16ToInt64Traits {
  public:
   typedef string16 string_type;
   typedef int64_t value_type;
   static const int kBase = 10;
   static inline value_type convert_func(const string_type::value_type* str,
                                         string_type::value_type** endptr) {
 #ifdef OS_WIN
     return _wcstoi64(str, endptr, kBase);
 #else  // assume OS_POSIX
     std::string ascii_string = UTF16ToASCII(string16(str));
     char* ascii_end = NULL;
     value_type ret = strtoll(ascii_string.c_str(), &ascii_end, kBase);
     if (ascii_string.c_str() + ascii_string.length() == ascii_end) {
       *endptr =
           const_cast<string_type::value_type*>(str) + ascii_string.length();
     }
     return ret;
 #endif
   }
   static inline bool valid_func(const string_type& str) {
     return !str.empty() && !iswspace(str[0]);
   }
 };
 }  // namespace
 namespace base {
 bool IsWprintfFormatPortable(const wchar_t* format) {
   for (const wchar_t* position = format; *position != '\0'; ++position) {
     if (*position == '%') {
       bool in_specification = true;
       bool modifier_l = false;
       while (in_specification) {
         // Eat up characters until reaching a known specifier.
         if (*++position == '\0') {
           // The format string ended in the middle of a specification.  Call
           // it portable because no unportable specifications were found.  The
           // string is equally broken on all platforms.
           return true;
         }
         if (*position == 'l') {
           // 'l' is the only thing that can save the 's' and 'c' specifiers.
           modifier_l = true;
         } else if (((*position == 's' || *position == 'c') && !modifier_l) ||
                    *position == 'S' || *position == 'C' || *position == 'F' ||
                    *position == 'D' || *position == 'O' || *position == 'U') {
           // Not portable.
           return false;
         }
         if (wcschr(L"diouxXeEfgGaAcspn%", *position)) {
           // Portable, keep scanning the rest of the format string.
           in_specification = false;
         }
       }
     }
   }
   return true;
 }
 }  // namespace base
 static const wchar_t kWhitespaceWide[] = {
 x0009,  // <control-0009> to <control-000D>
 x000A,
 x000B,
 x000C,
 x000D,
 x0020,  // Space
 x0085,  // <control-0085>
 x00A0,  // No-Break Space
 x1680,  // Ogham Space Mark
 x180E,  // Mongolian Vowel Separator
 x2000,  // En Quad to Hair Space
 x2001,
 x2002,
 x2003,
 x2004,
 x2005,
 x2006,
 x2007,
 x2008,
 x2009,
 x200A,
 x200C,  // Zero Width Non-Joiner
 x2028,  // Line Separator
 x2029,  // Paragraph Separator
 x202F,  // Narrow No-Break Space
 x205F,  // Medium Mathematical Space
 x3000,  // Ideographic Space
 
 };
 static const char kWhitespaceASCII[] = {
 x09,    // <control-0009> to <control-000D>
 x0A,
 x0B,
 x0C,
 x0D,
 x20,    // Space
 
 };
 template<typename STR>
 TrimPositions TrimStringT(const STR& input,
                           const typename STR::value_type trim_chars[],
                           TrimPositions positions,
                           STR* output) {
   // Find the edges of leading/trailing whitespace as desired.
   const typename STR::size_type last_char = input.length() - 1;
   const typename STR::size_type first_good_char = (positions & TRIM_LEADING) ?
       input.find_first_not_of(trim_chars) : 0;
   const typename STR::size_type last_good_char = (positions & TRIM_TRAILING) ?
       input.find_last_not_of(trim_chars) : last_char;
   // When the string was all whitespace, report that we stripped off whitespace
   // from whichever position the caller was interested in.  For empty input, we
   // stripped no whitespace, but we still need to clear |output|.
   if (input.empty() ||
       (first_good_char == STR::npos) || (last_good_char == STR::npos)) {
     bool input_was_empty = input.empty();  // in case output == &input
     output->clear();
     return input_was_empty ? TRIM_NONE : positions;
   }
   // Trim the whitespace.
   *output =
       input.substr(first_good_char, last_good_char - first_good_char + 1);
   // Return where we trimmed from.
   return static_cast<TrimPositions>(
       ((first_good_char == 0) ? TRIM_NONE : TRIM_LEADING) |
       ((last_good_char == last_char) ? TRIM_NONE : TRIM_TRAILING));
 }
 TrimPositions TrimWhitespace(const std::wstring& input,
                              TrimPositions positions,
                              std::wstring* output) {
   return TrimStringT(input, kWhitespaceWide, positions, output);
 }
 TrimPositions TrimWhitespaceASCII(const std::string& input,
                                   TrimPositions positions,
                                   std::string* output) {
   return TrimStringT(input, kWhitespaceASCII, positions, output);
 }
 // This function is only for backward-compatibility.
 // To be removed when all callers are updated.
 TrimPositions TrimWhitespace(const std::string& input,
                              TrimPositions positions,
                              std::string* output) {
   return TrimWhitespaceASCII(input, positions, output);
 }
 std::string WideToASCII(const std::wstring& wide) {
   DCHECK(IsStringASCII(wide));
   return std::string(wide.begin(), wide.end());
 }
 std::wstring ASCIIToWide(const std::string& ascii) {
   DCHECK(IsStringASCII(ascii));
   return std::wstring(ascii.begin(), ascii.end());
 }
 std::string UTF16ToASCII(const string16& utf16) {
   DCHECK(IsStringASCII(utf16));
   return std::string(utf16.begin(), utf16.end());
 }
 string16 ASCIIToUTF16(const std::string& ascii) {
   DCHECK(IsStringASCII(ascii));
   return string16(ascii.begin(), ascii.end());
 }
 template<class STR>
 static bool DoIsStringASCII(const STR& str) {
   for (size_t i = 0; i < str.length(); i++) {
     typename ToUnsigned<typename STR::value_type>::Unsigned c = str[i];
     if (c > 0x7F)
       return false;
   }
   return true;
 }
 bool IsStringASCII(const std::wstring& str) {
   return DoIsStringASCII(str);
 }
 #if !defined(WCHAR_T_IS_UTF16)
 bool IsStringASCII(const string16& str) {
   return DoIsStringASCII(str);
 }
 #endif
 bool IsStringASCII(const std::string& str) {
   return DoIsStringASCII(str);
 }
 // Overloaded wrappers around vsnprintf and vswprintf. The buf_size parameter
 // is the size of the buffer. These return the number of characters in the
 // formatted string excluding the NUL terminator. If the buffer is not
 // large enough to accommodate the formatted string without truncation, they
 // return the number of characters that would be in the fully-formatted string
 // (vsnprintf, and vswprintf on Windows), or -1 (vswprintf on POSIX platforms).
 inline int vsnprintfT(char* buffer,
                       size_t buf_size,
                       const char* format,
                       va_list argptr) {
   return base::vsnprintf(buffer, buf_size, format, argptr);
 }
 inline int vsnprintfT(wchar_t* buffer,
                       size_t buf_size,
                       const wchar_t* format,
                       va_list argptr) {
   return base::vswprintf(buffer, buf_size, format, argptr);
 }
 // Templatized backend for StringPrintF/StringAppendF. This does not finalize
 // the va_list, the caller is expected to do that.
 template <class StringType>
 static void StringAppendVT(StringType* dst,
                            const typename StringType::value_type* format,
                            va_list ap) {
   // First try with a small fixed size buffer.
   // This buffer size should be kept in sync with StringUtilTest.GrowBoundary
   // and StringUtilTest.StringPrintfBounds.
   typename StringType::value_type stack_buf[1024];
   va_list backup_ap;
   base_va_copy(backup_ap, ap);
 #if !defined(OS_WIN)
   errno = 0;
 #endif
   int result = vsnprintfT(stack_buf, arraysize(stack_buf), format, backup_ap);
   va_end(backup_ap);
   if (result >= 0 && result < static_cast<int>(arraysize(stack_buf))) {
     // It fit.
     dst->append(stack_buf, result);
     return;
   }
   // Repeatedly increase buffer size until it fits.
   int mem_length = arraysize(stack_buf);
   while (true) {
     if (result < 0) {
 #if !defined(OS_WIN)
       // On Windows, vsnprintfT always returns the number of characters in a
       // fully-formatted string, so if we reach this point, something else is
       // wrong and no amount of buffer-doubling is going to fix it.
       if (errno != 0 && errno != EOVERFLOW)
 #endif
       {
         // If an error other than overflow occurred, it's never going to work.
         DLOG(WARNING) << "Unable to printf the requested string due to error.";
         return;
       }
       // Try doubling the buffer size.
       mem_length *= 2;
     } else {
       // We need exactly "result + 1" characters.
       mem_length = result + 1;
     }
     if (mem_length > 32 * 1024 * 1024) {
       // That should be plenty, don't try anything larger.  This protects
       // against huge allocations when using vsnprintfT implementations that
       // return -1 for reasons other than overflow without setting errno.
       DLOG(WARNING) << "Unable to printf the requested string due to size.";
       return;
     }
     std::vector<typename StringType::value_type> mem_buf(mem_length);
     // Restore the va_list before we use it again.
     base_va_copy(backup_ap, ap);
     result = vsnprintfT(&mem_buf[0], mem_length, format, ap);
     va_end(backup_ap);
     if ((result >= 0) && (result < mem_length)) {
       // It fit.
       dst->append(&mem_buf[0], result);
       return;
     }
   }
 }
 namespace {
 template <typename STR, typename INT, typename UINT, bool NEG>
 struct IntToStringT {
   // This is to avoid a compiler warning about unary minus on unsigned type.
   // For example, say you had the following code:
   //   template <typename INT>
   //   INT abs(INT value) { return value < 0 ? -value : value; }
   // Even though if INT is unsigned, it's impossible for value < 0, so the
   // unary minus will never be taken, the compiler will still generate a
   // warning.  We do a little specialization dance...
   template <typename INT2, typename UINT2, bool NEG2>
   struct ToUnsignedT { };
   template <typename INT2, typename UINT2>
   struct ToUnsignedT<INT2, UINT2, false> {
     static UINT2 ToUnsigned(INT2 value) {
       return static_cast<UINT2>(value);
     }
   };
   template <typename INT2, typename UINT2>
   struct ToUnsignedT<INT2, UINT2, true> {
     static UINT2 ToUnsigned(INT2 value) {
       return static_cast<UINT2>(value < 0 ? -value : value);
     }
   };
   // This set of templates is very similar to the above templates, but
   // for testing whether an integer is negative.
   template <typename INT2, bool NEG2>
   struct TestNegT {};
   template <typename INT2>
   struct TestNegT<INT2, false> {
     static bool TestNeg(INT2 value) {
       // value is unsigned, and can never be negative.
       return false;
     }
   };
   template <typename INT2>
   struct TestNegT<INT2, true> {
     static bool TestNeg(INT2 value) {
       return value < 0;
     }
   };
   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 int kOutputBufSize = 3 * sizeof(INT) + 1;
     // Allocate the whole string right away, we will right back to front, and
     // then return the substr of what we ended up using.
     STR outbuf(kOutputBufSize, 0);
     bool is_neg = TestNegT<INT, NEG>::TestNeg(value);
     // Even though is_neg will never be true when INT is parameterized as
     // unsigned, even the presence of the unary operation causes a warning.
     UINT res = ToUnsignedT<INT, UINT, NEG>::ToUnsigned(value);
     for (typename STR::iterator it = outbuf.end();;) {
       --it;
       DCHECK(it != outbuf.begin());
       *it = static_cast<typename STR::value_type>((res % 10) + '0');
       res /= 10;
       // We're done..
       if (res == 0) {
         if (is_neg) {
           --it;
           DCHECK(it != outbuf.begin());
           *it = static_cast<typename STR::value_type>('-');
         }
         return STR(it, outbuf.end());
       }
     }
     NOTREACHED();
     return STR();
   }
 };
 }
 std::string IntToString(int value) {
   return IntToStringT<std::string, int, unsigned int, true>::
       IntToString(value);
 }
 std::wstring IntToWString(int value) {
   return IntToStringT<std::wstring, int, unsigned int, true>::
       IntToString(value);
 }
 std::string UintToString(unsigned int value) {
   return IntToStringT<std::string, unsigned int, unsigned int, false>::
       IntToString(value);
 }
 std::wstring UintToWString(unsigned int value) {
   return IntToStringT<std::wstring, unsigned int, unsigned int, false>::
       IntToString(value);
 }
 std::string Int64ToString(int64_t value) {
   return IntToStringT<std::string, int64_t, uint64_t, true>::
       IntToString(value);
 }
 std::wstring Int64ToWString(int64_t value) {
   return IntToStringT<std::wstring, int64_t, uint64_t, true>::
       IntToString(value);
 }
 std::string Uint64ToString(uint64_t value) {
   return IntToStringT<std::string, uint64_t, uint64_t, false>::
       IntToString(value);
 }
 std::wstring Uint64ToWString(uint64_t value) {
   return IntToStringT<std::wstring, uint64_t, uint64_t, false>::
       IntToString(value);
 }
 // Lower-level routine that takes a va_list and appends to a specified
 // string.  All other routines are just convenience wrappers around it.
 static void StringAppendV(std::string* dst, const char* format, va_list ap) {
   StringAppendVT(dst, format, ap);
 }
 static void StringAppendV(std::wstring* dst, const wchar_t* format, va_list ap) {
   StringAppendVT(dst, format, ap);
 }
 std::string StringPrintf(const char* format, ...) {
   va_list ap;
   va_start(ap, format);
   std::string result;
   StringAppendV(&result, format, ap);
   va_end(ap);
   return result;
 }
 std::wstring StringPrintf(const wchar_t* format, ...) {
   va_list ap;
   va_start(ap, format);
   std::wstring result;
   StringAppendV(&result, format, ap);
   va_end(ap);
   return result;
 }
 const std::string& SStringPrintf(std::string* dst, const char* format, ...) {
   va_list ap;
   va_start(ap, format);
   dst->clear();
   StringAppendV(dst, format, ap);
   va_end(ap);
   return *dst;
 }
 const std::wstring& SStringPrintf(std::wstring* dst,
                                   const wchar_t* format, ...) {
   va_list ap;
   va_start(ap, format);
   dst->clear();
   StringAppendV(dst, format, ap);
   va_end(ap);
   return *dst;
 }
 void StringAppendF(std::string* dst, const char* format, ...) {
   va_list ap;
   va_start(ap, format);
   StringAppendV(dst, format, ap);
   va_end(ap);
 }
 void StringAppendF(std::wstring* dst, const wchar_t* format, ...) {
   va_list ap;
   va_start(ap, format);
   StringAppendV(dst, format, ap);
   va_end(ap);
 }
 template<typename STR>
 static void SplitStringT(const STR& str,
                          const typename STR::value_type s,
                          bool trim_whitespace,
                          std::vector<STR>* r) {
   size_t last = 0;
   size_t i;
   size_t c = str.size();
   for (i = 0; i <= c; ++i) {
     if (i == c || str[i] == s) {
       size_t len = i - last;
       STR tmp = str.substr(last, len);
       if (trim_whitespace) {
         STR t_tmp;
         TrimWhitespace(tmp, TRIM_ALL, &t_tmp);
         r->push_back(t_tmp);
       } else {
         r->push_back(tmp);
       }
       last = i + 1;
     }
   }
 }
 void SplitString(const std::wstring& str,
                  wchar_t s,
                  std::vector<std::wstring>* r) {
   SplitStringT(str, s, true, r);
 }
 void SplitString(const std::string& str,
                  char s,
                  std::vector<std::string>* r) {
   SplitStringT(str, s, true, r);
 }
 // For the various *ToInt conversions, there are no *ToIntTraits classes to use
 // because there's no such thing as strtoi.  Use *ToLongTraits through a cast
 // instead, requiring that long and int are compatible and equal-width.  They
 // are on our target platforms.
 // XXX Sigh.
 #if !defined(ARCH_CPU_64_BITS)
 bool StringToInt(const std::string& input, int* output) {
   COMPILE_ASSERT(sizeof(int) == sizeof(long), cannot_strtol_to_int);
   return StringToNumber<StringToLongTraits>(input,
                                             reinterpret_cast<long*>(output));
 }
 bool StringToInt(const string16& input, int* output) {
   COMPILE_ASSERT(sizeof(int) == sizeof(long), cannot_wcstol_to_int);
   return StringToNumber<String16ToLongTraits>(input,
                                               reinterpret_cast<long*>(output));
 }
 #else
 bool StringToInt(const std::string& input, int* output) {
   long tmp;
   bool ok = StringToNumber<StringToLongTraits>(input, &tmp);
   if (!ok || tmp > kint32max) {
     return false;
   }
   *output = static_cast<int>(tmp);
   return true;
 }
 bool StringToInt(const string16& input, int* output) {
   long tmp;
   bool ok = StringToNumber<String16ToLongTraits>(input, &tmp);
   if (!ok || tmp > kint32max) {
     return false;
   }
   *output = static_cast<int>(tmp);
   return true;
 }
 #endif //  !defined(ARCH_CPU_64_BITS)
 bool StringToInt64(const std::string& input, int64_t* output) {
   return StringToNumber<StringToInt64Traits>(input, output);
 }
 bool StringToInt64(const string16& input, int64_t* output) {
   return StringToNumber<String16ToInt64Traits>(input, output);
 }
 int StringToInt(const std::string& value) {
   int result;
   StringToInt(value, &result);
   return result;
 }
 int StringToInt(const string16& value) {
   int result;
   StringToInt(value, &result);
   return result;
 }
 int64_t StringToInt64(const std::string& value) {
   int64_t result;
   StringToInt64(value, &result);
   return result;
 }
 int64_t StringToInt64(const string16& value) {
   int64_t result;
   StringToInt64(value, &result);
   return result;
 }
 // The following code is compatible with the OpenBSD lcpy interface.  See:
 //   http://www.gratisoft.us/todd/papers/strlcpy.html
 //   ftp://ftp.openbsd.org/pub/OpenBSD/src/lib/libc/string/{wcs,str}lcpy.c
 namespace {
 template <typename CHAR>
 size_t lcpyT(CHAR* dst, const CHAR* src, size_t dst_size) {
   for (size_t i = 0; i < dst_size; ++i) {
     if ((dst[i] = src[i]) == 0)  // We hit and copied the terminating NULL.
       return i;
   }
   // We were left off at dst_size.  We over copied 1 byte.  Null terminate.
   if (dst_size != 0)
     dst[dst_size - 1] = 0;
   // Count the rest of the |src|, and return it's length in characters.
   while (src[dst_size]) ++dst_size;
   return dst_size;
 }
 }  // namespace
 size_t base::strlcpy(char* dst, const char* src, size_t dst_size) {
   return lcpyT<char>(dst, src, dst_size);
 }
 size_t base::wcslcpy(wchar_t* dst, const wchar_t* src, size_t dst_size) {
   return lcpyT<wchar_t>(dst, src, dst_size);
 }

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ipc/chromium/src/base/string_util.cc@6474c204b198 (annotated)

ipc/chromium/src/base/string_util.cc