Base: First pass at having base.dll: definition of

base/string_util.h

 // Copyright (c) 2011 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.
 //
 // This file defines utility functions for working with strings.
 
 #ifndef BASE_STRING_UTIL_H_
 #define BASE_STRING_UTIL_H_
 #pragma once
 
 #include <stdarg.h>   // va_list
 
 #include <string>
 #include <vector>
 
+#include "base/base_api.h"
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/string16.h"
 #include "base/string_piece.h"  // For implicit conversions.
 
 // TODO(brettw) remove this dependency. Previously StringPrintf lived in this
 // file. We need to convert the callers over to using stringprintf.h instead
 // and then remove this.
 #include "base/stringprintf.h"
 
 // Safe standard library wrappers for all platforms.
 
 namespace base {
 
 // C standard-library functions like "strncasecmp" and "snprintf" that aren't
 // cross-platform are provided as "base::strncasecmp", and their prototypes
 // are listed below.  These functions are then implemented as inline calls
 // to the platform-specific equivalents in the platform-specific headers.
 
 // Compares the two strings s1 and s2 without regard to case using
 // the current locale; returns 0 if they are equal, 1 if s1 > s2, and -1 if
 // s2 > s1 according to a lexicographic comparison.
-int strcasecmp(const char* s1, const char* s2);
+BASE_API int strcasecmp(const char* s1, const char* s2);
 
 // Compares up to count characters of s1 and s2 without regard to case using
 // the current locale; returns 0 if they are equal, 1 if s1 > s2, and -1 if
 // s2 > s1 according to a lexicographic comparison.
-int strncasecmp(const char* s1, const char* s2, size_t count);
+BASE_API int strncasecmp(const char* s1, const char* s2, size_t count);
 
 // Same as strncmp but for char16 strings.
-int strncmp16(const char16* s1, const char16* s2, size_t count);
+BASE_API int strncmp16(const char16* s1, const char16* s2, size_t count);
 
 // Wrapper for vsnprintf that always null-terminates and always returns the
 // number of characters that would be in an untruncated formatted
 // string, even when truncation occurs.
-int vsnprintf(char* buffer, size_t size, const char* format, va_list arguments)
+BASE_API int vsnprintf(char* buffer, size_t size, const char* format,
+                       va_list arguments)
     PRINTF_FORMAT(3, 0);
 
 // vswprintf always null-terminates, but when truncation occurs, it will either
 // return -1 or the number of characters that would be in an untruncated
 // formatted string.  The actual return value depends on the underlying
 // C library's vswprintf implementation.
-int vswprintf(wchar_t* buffer, size_t size,
-              const wchar_t* format, va_list arguments) WPRINTF_FORMAT(3, 0);
+BASE_API int vswprintf(wchar_t* buffer, size_t size,
+                       const wchar_t* format, va_list arguments)
+    WPRINTF_FORMAT(3, 0);
 
 // Some of these implementations need to be inlined.
 
 // We separate the declaration from the implementation of this inline
 // function just so the PRINTF_FORMAT works.
 inline int snprintf(char* buffer, size_t size, const char* format, ...)
     PRINTF_FORMAT(3, 4);
 inline int snprintf(char* buffer, size_t size, const char* format, ...) {
   va_list arguments;
   va_start(arguments, format);
@@ skipping 13 matching lines @@
   va_end(arguments);
   return result;
 }
 
 // BSD-style safe and consistent string copy functions.
 // Copies |src| to |dst|, where |dst_size| is the total allocated size of |dst|.
 // Copies at most |dst_size|-1 characters, and always NULL terminates |dst|, as
 // long as |dst_size| is not 0.  Returns the length of |src| in characters.
 // If the return value is >= dst_size, then the output was truncated.
 // NOTE: All sizes are in number of characters, NOT in bytes.
-size_t strlcpy(char* dst, const char* src, size_t dst_size);
-size_t wcslcpy(wchar_t* dst, const wchar_t* src, size_t dst_size);
+BASE_API size_t strlcpy(char* dst, const char* src, size_t dst_size);
+BASE_API size_t wcslcpy(wchar_t* dst, const wchar_t* src, size_t dst_size);
 
 // Scan a wprintf format string to determine whether it's portable across a
 // variety of systems.  This function only checks that the conversion
 // specifiers used by the format string are supported and have the same meaning
 // on a variety of systems.  It doesn't check for other errors that might occur
 // within a format string.
 //
 // Nonportable conversion specifiers for wprintf are:
 //  - 's' and 'c' without an 'l' length modifier.  %s and %c operate on char
 //     data on all systems except Windows, which treat them as wchar_t data.
 //     Use %ls and %lc for wchar_t data instead.
 //  - 'S' and 'C', which operate on wchar_t data on all systems except Windows,
 //     which treat them as char data.  Use %ls and %lc for wchar_t data
 //     instead.
 //  - 'F', which is not identified by Windows wprintf documentation.
 //  - 'D', 'O', and 'U', which are deprecated and not available on all systems.
 //     Use %ld, %lo, and %lu instead.
 //
 // Note that there is no portable conversion specifier for char data when
 // working with wprintf.
 //
 // This function is intended to be called from base::vswprintf.
-bool IsWprintfFormatPortable(const wchar_t* format);
+BASE_API bool IsWprintfFormatPortable(const wchar_t* format);
 
 // ASCII-specific tolower.  The standard library's tolower is locale sensitive,
 // so we don't want to use it here.
 template <class Char> inline Char ToLowerASCII(Char c) {
   return (c >= 'A' && c <= 'Z') ? (c + ('a' - 'A')) : c;
 }
 
 // ASCII-specific toupper.  The standard library's toupper is locale sensitive,
 // so we don't want to use it here.
 template <class Char> inline Char ToUpperASCII(Char c) {
@@ skipping 30 matching lines @@
 
 // These threadsafe functions return references to globally unique empty
 // strings.
 //
 // DO NOT USE THESE AS A GENERAL-PURPOSE SUBSTITUTE FOR DEFAULT CONSTRUCTORS.
 // There is only one case where you should use these: functions which need to
 // return a string by reference (e.g. as a class member accessor), and don't
 // have an empty string to use (e.g. in an error case).  These should not be
 // used as initializers, function arguments, or return values for functions
 // which return by value or outparam.
-const std::string& EmptyString();
-const std::wstring& EmptyWString();
-const string16& EmptyString16();
+BASE_API const std::string& EmptyString();
+BASE_API const std::wstring& EmptyWString();
+BASE_API const string16& EmptyString16();
 
 extern const wchar_t kWhitespaceWide[];
 extern const char16 kWhitespaceUTF16[];
 extern const char kWhitespaceASCII[];
 
 extern const char kUtf8ByteOrderMark[];
 
 // Removes characters in remove_chars from anywhere in input.  Returns true if
 // any characters were removed.
 // NOTE: Safe to use the same variable for both input and output.
-bool RemoveChars(const std::wstring& input,
-                 const wchar_t remove_chars[],
-                 std::wstring* output);
-bool RemoveChars(const string16& input,
-                 const char16 remove_chars[],
-                 string16* output);
-bool RemoveChars(const std::string& input,
-                 const char remove_chars[],
-                 std::string* output);
+BASE_API bool RemoveChars(const std::wstring& input,
+                          const wchar_t remove_chars[],
+                          std::wstring* output);
+BASE_API bool RemoveChars(const string16& input,
+                          const char16 remove_chars[],
+                          string16* output);
+BASE_API bool RemoveChars(const std::string& input,
+                          const char remove_chars[],
+                          std::string* output);
 
 // Removes characters in trim_chars from the beginning and end of input.
 // NOTE: Safe to use the same variable for both input and output.
-bool TrimString(const std::wstring& input,
-                const wchar_t trim_chars[],
-                std::wstring* output);
-bool TrimString(const string16& input,
-                const char16 trim_chars[],
-                string16* output);
-bool TrimString(const std::string& input,
-                const char trim_chars[],
-                std::string* output);
+BASE_API bool TrimString(const std::wstring& input,
+                         const wchar_t trim_chars[],
+                         std::wstring* output);
+BASE_API bool TrimString(const string16& input,
+                         const char16 trim_chars[],
+                         string16* output);
+BASE_API bool TrimString(const std::string& input,
+                         const char trim_chars[],
+                         std::string* output);
 
 // Truncates a string to the nearest UTF-8 character that will leave
 // the string less than or equal to the specified byte size.
-void TruncateUTF8ToByteSize(const std::string& input,
-                            const size_t byte_size,
-                            std::string* output);
+BASE_API void TruncateUTF8ToByteSize(const std::string& input,
+                                     const size_t byte_size,
+                                     std::string* output);
 
 // Trims any whitespace from either end of the input string.  Returns where
 // whitespace was found.
 // The non-wide version has two functions:
 // * TrimWhitespaceASCII()
 //   This function is for ASCII strings and only looks for ASCII whitespace;
 // Please choose the best one according to your usage.
 // NOTE: Safe to use the same variable for both input and output.
 enum TrimPositions {
   TRIM_NONE     = 0,
   TRIM_LEADING  = 1 << 0,
   TRIM_TRAILING = 1 << 1,
   TRIM_ALL      = TRIM_LEADING | TRIM_TRAILING,
 };
-TrimPositions TrimWhitespace(const std::wstring& input,
-                             TrimPositions positions,
-                             std::wstring* output);
-TrimPositions TrimWhitespace(const string16& input,
-                             TrimPositions positions,
-                             string16* output);
-TrimPositions TrimWhitespaceASCII(const std::string& input,
-                                  TrimPositions positions,
-                                  std::string* output);
+BASE_API TrimPositions TrimWhitespace(const std::wstring& input,
+                                      TrimPositions positions,
+                                      std::wstring* output);
+BASE_API TrimPositions TrimWhitespace(const string16& input,
+                                      TrimPositions positions,
+                                      string16* output);
+BASE_API TrimPositions TrimWhitespaceASCII(const std::string& input,
+                                           TrimPositions positions,
+                                           std::string* output);
 
 // Deprecated. This function is only for backward compatibility and calls
 // TrimWhitespaceASCII().
-TrimPositions TrimWhitespace(const std::string& input,
-                             TrimPositions positions,
-                             std::string* output);
+BASE_API TrimPositions TrimWhitespace(const std::string& input,
+                                      TrimPositions positions,
+                                      std::string* output);
 
 // Searches  for CR or LF characters.  Removes all contiguous whitespace
 // strings that contain them.  This is useful when trying to deal with text
 // copied from terminals.
 // Returns |text|, with the following three transformations:
 // (1) Leading and trailing whitespace is trimmed.
 // (2) If |trim_sequences_with_line_breaks| is true, any other whitespace
 //     sequences containing a CR or LF are trimmed.
 // (3) All other whitespace sequences are converted to single spaces.
-std::wstring CollapseWhitespace(const std::wstring& text,
-                                bool trim_sequences_with_line_breaks);
-string16 CollapseWhitespace(const string16& text,
-                            bool trim_sequences_with_line_breaks);
-std::string CollapseWhitespaceASCII(const std::string& text,
-                                    bool trim_sequences_with_line_breaks);
+BASE_API std::wstring CollapseWhitespace(const std::wstring& text,
+                                         bool trim_sequences_with_line_breaks);
+BASE_API string16 CollapseWhitespace(const string16& text,
+                                     bool trim_sequences_with_line_breaks);
+BASE_API std::string CollapseWhitespaceASCII(
+    const std::string& text, bool trim_sequences_with_line_breaks);
 
 // Returns true if the passed string is empty or contains only white-space
 // characters.
-bool ContainsOnlyWhitespaceASCII(const std::string& str);
-bool ContainsOnlyWhitespace(const string16& str);
+BASE_API bool ContainsOnlyWhitespaceASCII(const std::string& str);
+BASE_API bool ContainsOnlyWhitespace(const string16& str);
 
 // Returns true if |input| is empty or contains only characters found in
 // |characters|.
-bool ContainsOnlyChars(const std::wstring& input,
-                       const std::wstring& characters);
-bool ContainsOnlyChars(const string16& input, const string16& characters);
-bool ContainsOnlyChars(const std::string& input, const std::string& characters);
+BASE_API bool ContainsOnlyChars(const std::wstring& input,
+                                const std::wstring& characters);
+BASE_API bool ContainsOnlyChars(const string16& input,
+                                const string16& characters);
+BASE_API bool ContainsOnlyChars(const std::string& input,
+                                const std::string& characters);
 
 // Converts to 7-bit ASCII by truncating. The result must be known to be ASCII
 // beforehand.
-std::string WideToASCII(const std::wstring& wide);
-std::string UTF16ToASCII(const string16& utf16);
+BASE_API std::string WideToASCII(const std::wstring& wide);
+BASE_API std::string UTF16ToASCII(const string16& utf16);
 
 // Converts the given wide string to the corresponding Latin1. This will fail
 // (return false) if any characters are more than 255.
-bool WideToLatin1(const std::wstring& wide, std::string* latin1);
+BASE_API bool WideToLatin1(const std::wstring& wide, std::string* latin1);
 
 // Returns true if the specified string matches the criteria. How can a wide
 // string be 8-bit or UTF8? It contains only characters that are < 256 (in the
 // first case) or characters that use only 8-bits and whose 8-bit
 // representation looks like a UTF-8 string (the second case).
 //
 // Note that IsStringUTF8 checks not only if the input is structurally
 // valid but also if it doesn't contain any non-character codepoint
 // (e.g. U+FFFE). It's done on purpose because all the existing callers want
 // to have the maximum 'discriminating' power from other encodings. If
 // there's a use case for just checking the structural validity, we have to
 // add a new function for that.
-bool IsStringUTF8(const std::string& str);
-bool IsStringASCII(const std::wstring& str);
-bool IsStringASCII(const base::StringPiece& str);
-bool IsStringASCII(const string16& str);
+BASE_API bool IsStringUTF8(const std::string& str);
+BASE_API bool IsStringASCII(const std::wstring& str);
+BASE_API bool IsStringASCII(const base::StringPiece& str);
+BASE_API bool IsStringASCII(const string16& str);
 
 // Converts the elements of the given string.  This version uses a pointer to
 // clearly differentiate it from the non-pointer variant.
 template <class str> inline void StringToLowerASCII(str* s) {
   for (typename str::iterator i = s->begin(); i != s->end(); ++i)
     *i = base::ToLowerASCII(*i);
 }
 
 template <class str> inline str StringToLowerASCII(const str& s) {
   // for std::string and std::wstring
@@ skipping 13 matching lines @@
   // for std::string and std::wstring
   str output(s);
   StringToUpperASCII(&output);
   return output;
 }
 
 // Compare the lower-case form of the given string against the given ASCII
 // string.  This is useful for doing checking if an input string matches some
 // token, and it is optimized to avoid intermediate string copies.  This API is
 // borrowed from the equivalent APIs in Mozilla.
-bool LowerCaseEqualsASCII(const std::string& a, const char* b);
-bool LowerCaseEqualsASCII(const std::wstring& a, const char* b);
-bool LowerCaseEqualsASCII(const string16& a, const char* b);
+BASE_API bool LowerCaseEqualsASCII(const std::string& a, const char* b);
+BASE_API bool LowerCaseEqualsASCII(const std::wstring& a, const char* b);
+BASE_API bool LowerCaseEqualsASCII(const string16& a, const char* b);
 
 // Same thing, but with string iterators instead.
-bool LowerCaseEqualsASCII(std::string::const_iterator a_begin,
-                          std::string::const_iterator a_end,
-                          const char* b);
-bool LowerCaseEqualsASCII(std::wstring::const_iterator a_begin,
-                          std::wstring::const_iterator a_end,
-                          const char* b);
-bool LowerCaseEqualsASCII(string16::const_iterator a_begin,
-                          string16::const_iterator a_end,
-                          const char* b);
-bool LowerCaseEqualsASCII(const char* a_begin,
-                          const char* a_end,
-                          const char* b);
-bool LowerCaseEqualsASCII(const wchar_t* a_begin,
-                          const wchar_t* a_end,
-                          const char* b);
-bool LowerCaseEqualsASCII(const char16* a_begin,
-                          const char16* a_end,
-                          const char* b);
+BASE_API bool LowerCaseEqualsASCII(std::string::const_iterator a_begin,
+                                   std::string::const_iterator a_end,
+                                   const char* b);
+BASE_API bool LowerCaseEqualsASCII(std::wstring::const_iterator a_begin,
+                                   std::wstring::const_iterator a_end,
+                                   const char* b);
+BASE_API bool LowerCaseEqualsASCII(string16::const_iterator a_begin,
+                                   string16::const_iterator a_end,
+                                   const char* b);
+BASE_API bool LowerCaseEqualsASCII(const char* a_begin,
+                                   const char* a_end,
+                                   const char* b);
+BASE_API bool LowerCaseEqualsASCII(const wchar_t* a_begin,
+                                   const wchar_t* a_end,
+                                   const char* b);
+BASE_API bool LowerCaseEqualsASCII(const char16* a_begin,
+                                   const char16* a_end,
+                                   const char* b);
 
 // Performs a case-sensitive string compare. The behavior is undefined if both
 // strings are not ASCII.
-bool EqualsASCII(const string16& a, const base::StringPiece& b);
+BASE_API bool EqualsASCII(const string16& a, const base::StringPiece& b);
 
 // Returns true if str starts with search, or false otherwise.
-bool StartsWithASCII(const std::string& str,
-                     const std::string& search,
-                     bool case_sensitive);
-bool StartsWith(const std::wstring& str,
-                const std::wstring& search,
-                bool case_sensitive);
-bool StartsWith(const string16& str,
-                const string16& search,
-                bool case_sensitive);
+BASE_API bool StartsWithASCII(const std::string& str,
+                              const std::string& search,
+                              bool case_sensitive);
+BASE_API bool StartsWith(const std::wstring& str,
+                         const std::wstring& search,
+                         bool case_sensitive);
+BASE_API bool StartsWith(const string16& str,
+                         const string16& search,
+                         bool case_sensitive);
 
 // Returns true if str ends with search, or false otherwise.
-bool EndsWith(const std::string& str,
-              const std::string& search,
-              bool case_sensitive);
-bool EndsWith(const std::wstring& str,
-              const std::wstring& search,
-              bool case_sensitive);
-bool EndsWith(const string16& str,
-              const string16& search,
-              bool case_sensitive);
+BASE_API bool EndsWith(const std::string& str,
+                       const std::string& search,
+                       bool case_sensitive);
+BASE_API bool EndsWith(const std::wstring& str,
+                       const std::wstring& search,
+                       bool case_sensitive);
+BASE_API bool EndsWith(const string16& str,
+                       const string16& search,
+                       bool case_sensitive);
 
 
 // Determines the type of ASCII character, independent of locale (the C
 // library versions will change based on locale).
 template <typename Char>
 inline bool IsAsciiWhitespace(Char c) {
   return c == ' ' || c == '\r' || c == '\n' || c == '\t';
 }
 template <typename Char>
 inline bool IsAsciiAlpha(Char c) {
@@ skipping 30 matching lines @@
 
 enum DataUnits {
   DATA_UNITS_BYTE = 0,
   DATA_UNITS_KIBIBYTE,
   DATA_UNITS_MEBIBYTE,
   DATA_UNITS_GIBIBYTE,
 };
 
 // Return the unit type that is appropriate for displaying the amount of bytes
 // passed in.
-DataUnits GetByteDisplayUnits(int64 bytes);
+BASE_API DataUnits GetByteDisplayUnits(int64 bytes);
 
 // Return a byte string in human-readable format, displayed in units appropriate
 // specified by 'units', with an optional unit suffix.
 // Ex: FormatBytes(512, DATA_UNITS_KIBIBYTE, true) => "0.5 KB"
 // Ex: FormatBytes(10*1024, DATA_UNITS_MEBIBYTE, false) => "0.1"
-string16 FormatBytes(int64 bytes, DataUnits units, bool show_units);
+BASE_API string16 FormatBytes(int64 bytes, DataUnits units, bool show_units);
 
 // As above, but with "/s" units.
 // Ex: FormatSpeed(512, DATA_UNITS_KIBIBYTE, true) => "0.5 KB/s"
 // Ex: FormatSpeed(10*1024, DATA_UNITS_MEBIBYTE, false) => "0.1"
-string16 FormatSpeed(int64 bytes, DataUnits units, bool show_units);
+BASE_API string16 FormatSpeed(int64 bytes, DataUnits units, bool show_units);
 
 // Return a number formated with separators in the user's locale way.
 // Ex: FormatNumber(1234567) => 1,234,567
-string16 FormatNumber(int64 number);
+BASE_API string16 FormatNumber(int64 number);
 
 // Starting at |start_offset| (usually 0), replace the first instance of
 // |find_this| with |replace_with|.
-void ReplaceFirstSubstringAfterOffset(string16* str,
-                                      string16::size_type start_offset,
-                                      const string16& find_this,
-                                      const string16& replace_with);
-void ReplaceFirstSubstringAfterOffset(std::string* str,
-                                      std::string::size_type start_offset,
-                                      const std::string& find_this,
-                                      const std::string& replace_with);
+BASE_API void ReplaceFirstSubstringAfterOffset(string16* str,
+                                               string16::size_type start_offset,
+                                               const string16& find_this,
+                                               const string16& replace_with);
+BASE_API void ReplaceFirstSubstringAfterOffset(
+    std::string* str,
+    std::string::size_type start_offset,
+    const std::string& find_this,
+    const std::string& replace_with);
 
 // Starting at |start_offset| (usually 0), look through |str| and replace all
 // instances of |find_this| with |replace_with|.
 //
 // This does entire substrings; use std::replace in <algorithm> for single
 // characters, for example:
 //   std::replace(str.begin(), str.end(), 'a', 'b');
-void ReplaceSubstringsAfterOffset(string16* str,
-                                  string16::size_type start_offset,
-                                  const string16& find_this,
-                                  const string16& replace_with);
-void ReplaceSubstringsAfterOffset(std::string* str,
-                                  std::string::size_type start_offset,
-                                  const std::string& find_this,
-                                  const std::string& replace_with);
+BASE_API void ReplaceSubstringsAfterOffset(string16* str,
+                                           string16::size_type start_offset,
+                                           const string16& find_this,
+                                           const string16& replace_with);
+BASE_API void ReplaceSubstringsAfterOffset(std::string* str,
+                                           std::string::size_type start_offset,
+                                           const std::string& find_this,
+                                           const std::string& replace_with);
 
 // This is mpcomplete's pattern for saving a string copy when dealing with
 // a function that writes results into a wchar_t[] and wanting the result to
 // end up in a std::wstring.  It ensures that the std::wstring's internal
 // buffer has enough room to store the characters to be written into it, and
 // sets its .length() attribute to the right value.
 //
 // The reserve() call allocates the memory required to hold the string
 // plus a terminating null.  This is done because resize() isn't
 // guaranteed to reserve space for the null.  The resize() call is
 // simply the only way to change the string's 'length' member.
 //
 // XXX-performance: the call to wide.resize() takes linear time, since it fills
 // the string's buffer with nulls.  I call it to change the length of the
 // string (needed because writing directly to the buffer doesn't do this).
 // Perhaps there's a constant-time way to change the string's length.
 template <class string_type>
 inline typename string_type::value_type* WriteInto(string_type* str,
                                                    size_t length_with_null) {
   str->reserve(length_with_null);
   str->resize(length_with_null - 1);
   return &((*str)[0]);
 }
 
 //-----------------------------------------------------------------------------
 
 // Splits a string into its fields delimited by any of the characters in
 // |delimiters|.  Each field is added to the |tokens| vector.  Returns the
 // number of tokens found.
-size_t Tokenize(const std::wstring& str,
-                const std::wstring& delimiters,
-                std::vector<std::wstring>* tokens);
-size_t Tokenize(const string16& str,
-                const string16& delimiters,
-                std::vector<string16>* tokens);
-size_t Tokenize(const std::string& str,
-                const std::string& delimiters,
-                std::vector<std::string>* tokens);
-size_t Tokenize(const base::StringPiece& str,
-                const base::StringPiece& delimiters,
-                std::vector<base::StringPiece>* tokens);
+BASE_API size_t Tokenize(const std::wstring& str,
+                         const std::wstring& delimiters,
+                         std::vector<std::wstring>* tokens);
+BASE_API size_t Tokenize(const string16& str,
+                         const string16& delimiters,
+                         std::vector<string16>* tokens);
+BASE_API size_t Tokenize(const std::string& str,
+                         const std::string& delimiters,
+                         std::vector<std::string>* tokens);
+BASE_API size_t Tokenize(const base::StringPiece& str,
+                         const base::StringPiece& delimiters,
+                         std::vector<base::StringPiece>* tokens);
 
 // Does the opposite of SplitString().
-string16 JoinString(const std::vector<string16>& parts, char16 s);
-std::string JoinString(const std::vector<std::string>& parts, char s);
+BASE_API string16 JoinString(const std::vector<string16>& parts, char16 s);
+BASE_API std::string JoinString(const std::vector<std::string>& parts, char s);
 
 // Replace $1-$2-$3..$9 in the format string with |a|-|b|-|c|..|i| respectively.
 // Additionally, any number of consecutive '$' characters is replaced by that
 // number less one. Eg $$->$, $$$->$$, etc. The offsets parameter here can be
 // NULL. This only allows you to use up to nine replacements.
-string16 ReplaceStringPlaceholders(const string16& format_string,
-                                   const std::vector<string16>& subst,
-                                   std::vector<size_t>* offsets);
+BASE_API string16 ReplaceStringPlaceholders(const string16& format_string,
+                                            const std::vector<string16>& subst,
+                                            std::vector<size_t>* offsets);
 
-std::string ReplaceStringPlaceholders(const base::StringPiece& format_string,
-                                      const std::vector<std::string>& subst,
-                                      std::vector<size_t>* offsets);
+BASE_API std::string ReplaceStringPlaceholders(
+    const base::StringPiece& format_string,
+    const std::vector<std::string>& subst,
+    std::vector<size_t>* offsets);
 
 // Single-string shortcut for ReplaceStringHolders. |offset| may be NULL.
-string16 ReplaceStringPlaceholders(const string16& format_string,
-                                   const string16& a,
-                                   size_t* offset);
+BASE_API string16 ReplaceStringPlaceholders(const string16& format_string,
+                                            const string16& a,
+                                            size_t* offset);
 
 // Returns true if the string passed in matches the pattern. The pattern
 // string can contain wildcards like * and ?
 // The backslash character (\) is an escape character for * and ?
 // We limit the patterns to having a max of 16 * or ? characters.
 // ? matches 0 or 1 character, while * matches 0 or more characters.
-bool MatchPattern(const base::StringPiece& string,
-                  const base::StringPiece& pattern);
-bool MatchPattern(const string16& string, const string16& pattern);
+BASE_API bool MatchPattern(const base::StringPiece& string,
+                           const base::StringPiece& pattern);
+BASE_API bool MatchPattern(const string16& string, const string16& pattern);
 
 // 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<>
@@ skipping 11 matching lines @@
 #elif defined(WCHAR_T_IS_UTF32)
   typedef uint32 Unsigned;
 #endif
 };
 template<>
 struct ToUnsigned<short> {
   typedef unsigned short Unsigned;
 };
 
 #endif  // BASE_STRING_UTIL_H_