Merging viewer-2-0 changes into avatar-pipeline branch

--HG--
branch : avatar-pipeline

1 files changed, 1300 insertions, 1300 deletions

diff --git a/indra/llcommon/llstring.h b/indra/llcommon/llstring.h
index edbb007f61..31e70e0fe4 100644
--- a/indra/llcommon/llstring.h
+++ b/indra/llcommon/llstring.h
@@ -1,1300 +1,1300 @@
-/** 

- * @file llstring.h

- * @brief String utility functions and std::string class.

- *

- * $LicenseInfo:firstyear=2001&license=viewergpl$

- * 

- * Copyright (c) 2001-2009, Linden Research, Inc.

- * 

- * Second Life Viewer Source Code

- * The source code in this file ("Source Code") is provided by Linden Lab

- * to you under the terms of the GNU General Public License, version 2.0

- * ("GPL"), unless you have obtained a separate licensing agreement

- * ("Other License"), formally executed by you and Linden Lab.  Terms of

- * the GPL can be found in doc/GPL-license.txt in this distribution, or

- * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2

- * 

- * There are special exceptions to the terms and conditions of the GPL as

- * it is applied to this Source Code. View the full text of the exception

- * in the file doc/FLOSS-exception.txt in this software distribution, or

- * online at

- * http://secondlifegrid.net/programs/open_source/licensing/flossexception

- * 

- * By copying, modifying or distributing this software, you acknowledge

- * that you have read and understood your obligations described above,

- * and agree to abide by those obligations.

- * 

- * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO

- * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,

- * COMPLETENESS OR PERFORMANCE.

- * $/LicenseInfo$

- */

-

-#ifndef LL_LLSTRING_H

-#define LL_LLSTRING_H

-

-#include <string>

-#include <cstdio>

-#include <locale>

-#include <iomanip>

-#include "llsd.h"

-#include "llfasttimer.h"

-

-#if LL_LINUX || LL_SOLARIS

-#include <wctype.h>

-#include <wchar.h>

-#endif

-

-#include <string.h>

-

-#if LL_SOLARIS

-// stricmp and strnicmp do not exist on Solaris:

-#define stricmp strcasecmp

-#define strnicmp strncasecmp

-#endif

-

-const char LL_UNKNOWN_CHAR = '?';

-

-#if LL_DARWIN || LL_LINUX || LL_SOLARIS

-// Template specialization of char_traits for U16s. Only necessary on Mac and Linux (exists on Windows already)

-#include <cstring>

-

-namespace std

-{

-template<>

-struct char_traits<U16>

-{

-	typedef U16 		char_type;

-	typedef int 	    int_type;

-	typedef streampos 	pos_type;

-	typedef streamoff 	off_type;

-	typedef mbstate_t 	state_type;

-	

-	static void 

-		assign(char_type& __c1, const char_type& __c2)

-	{ __c1 = __c2; }

-	

-	static bool 

-		eq(const char_type& __c1, const char_type& __c2)

-	{ return __c1 == __c2; }

-	

-	static bool 

-		lt(const char_type& __c1, const char_type& __c2)

-	{ return __c1 < __c2; }

-	

-	static int 

-		compare(const char_type* __s1, const char_type* __s2, size_t __n)

-	{ return memcmp(__s1, __s2, __n * sizeof(char_type)); }

-	

-	static size_t

-		length(const char_type* __s)

-	{

-		const char_type *cur_char = __s;

-		while (*cur_char != 0)

-		{

-			++cur_char;

-		}

-		return cur_char - __s;

-	}

-	

-	static const char_type* 

-		find(const char_type* __s, size_t __n, const char_type& __a)

-	{ return static_cast<const char_type*>(memchr(__s, __a, __n * sizeof(char_type))); }

-	

-	static char_type* 

-		move(char_type* __s1, const char_type* __s2, size_t __n)

-	{ return static_cast<char_type*>(memmove(__s1, __s2, __n * sizeof(char_type))); }

-	

-	static char_type* 

-		copy(char_type* __s1, const char_type* __s2, size_t __n)

-	{  return static_cast<char_type*>(memcpy(__s1, __s2, __n * sizeof(char_type))); }	/* Flawfinder: ignore */

-	

-	static char_type* 

-		assign(char_type* __s, size_t __n, char_type __a)

-	{ 

-		// This isn't right.

-		//return static_cast<char_type*>(memset(__s, __a, __n * sizeof(char_type))); 

-		

-		// I don't think there's a standard 'memset' for 16-bit values.

-		// Do this the old-fashioned way.

-		

-		size_t __i;

-		for(__i = 0; __i < __n; __i++)

-		{

-			__s[__i] = __a;

-		}

-		return __s; 

-	}

-	

-	static char_type 

-		to_char_type(const int_type& __c)

-	{ return static_cast<char_type>(__c); }

-	

-	static int_type 

-		to_int_type(const char_type& __c)

-	{ return static_cast<int_type>(__c); }

-	

-	static bool 

-		eq_int_type(const int_type& __c1, const int_type& __c2)

-	{ return __c1 == __c2; }

-	

-	static int_type 

-		eof() { return static_cast<int_type>(EOF); }

-	

-	static int_type 

-		not_eof(const int_type& __c)

-      { return (__c == eof()) ? 0 : __c; }

-  };

-};

-#endif

-

-class LL_COMMON_API LLStringOps

-{

-private:

-	static long sPacificTimeOffset;

-	static long sLocalTimeOffset;

-	static bool sPacificDaylightTime;

-	static std::map<std::string, std::string> datetimeToCodes;

-

-public:

-	static char toUpper(char elem) { return toupper((unsigned char)elem); }

-	static llwchar toUpper(llwchar elem) { return towupper(elem); }

-	

-	static char toLower(char elem) { return tolower((unsigned char)elem); }

-	static llwchar toLower(llwchar elem) { return towlower(elem); }

-

-	static bool isSpace(char elem) { return isspace((unsigned char)elem) != 0; }

-	static bool isSpace(llwchar elem) { return iswspace(elem) != 0; }

-

-	static bool isUpper(char elem) { return isupper((unsigned char)elem) != 0; }

-	static bool isUpper(llwchar elem) { return iswupper(elem) != 0; }

-

-	static bool isLower(char elem) { return islower((unsigned char)elem) != 0; }

-	static bool isLower(llwchar elem) { return iswlower(elem) != 0; }

-

-	static bool isDigit(char a) { return isdigit((unsigned char)a) != 0; }

-	static bool isDigit(llwchar a) { return iswdigit(a) != 0; }

-

-	static bool isPunct(char a) { return ispunct((unsigned char)a) != 0; }

-	static bool isPunct(llwchar a) { return iswpunct(a) != 0; }

-

-	static bool isAlnum(char a) { return isalnum((unsigned char)a) != 0; }

-	static bool isAlnum(llwchar a) { return iswalnum(a) != 0; }

-

-	static S32	collate(const char* a, const char* b) { return strcoll(a, b); }

-	static S32	collate(const llwchar* a, const llwchar* b);

-

-	static void setupDatetimeInfo(bool pacific_daylight_time);

-	static long getPacificTimeOffset(void) { return sPacificTimeOffset;}

-	static long getLocalTimeOffset(void) { return sLocalTimeOffset;}

-	// Is the Pacific time zone (aka server time zone)

-	// currently in daylight savings time?

-	static bool getPacificDaylightTime(void) { return sPacificDaylightTime;}

-

-	static std::string getDatetimeCode (std::string key);

-};

-

-/**

- * @brief Return a string constructed from in without crashing if the

- * pointer is NULL.

- */

-LL_COMMON_API std::string ll_safe_string(const char* in);

-LL_COMMON_API std::string ll_safe_string(const char* in, S32 maxlen);

-

-

-// Allowing assignments from non-strings into format_map_t is apparently

-// *really* error-prone, so subclass std::string with just basic c'tors.

-class LLFormatMapString

-{

-public:

-	LLFormatMapString() {};

-	LLFormatMapString(const char* s) : mString(ll_safe_string(s)) {};

-	LLFormatMapString(const std::string& s) : mString(s) {};

-	operator std::string() const { return mString; }

-	bool operator<(const LLFormatMapString& rhs) const { return mString < rhs.mString; }

-	std::size_t length() const { return mString.length(); }

-	

-private:

-	std::string mString;

-};

-

-template <class T>

-class LLStringUtilBase

-{

-private:

-	static std::string sLocale;

-

-public:

-	typedef typename std::basic_string<T>::size_type size_type;

-	

-public:

-	/////////////////////////////////////////////////////////////////////////////////////////

-	// Static Utility functions that operate on std::strings

-

-	static std::basic_string<T> null;

-	

-	typedef std::map<LLFormatMapString, LLFormatMapString> format_map_t;

-	LL_COMMON_API static void getTokens(const std::basic_string<T>& instr, std::vector<std::basic_string<T> >& tokens, const std::basic_string<T>& delims);

-	LL_COMMON_API static void formatNumber(std::basic_string<T>& numStr, std::basic_string<T> decimals);

-	LL_COMMON_API static bool formatDatetime(std::basic_string<T>& replacement, std::basic_string<T> token, std::basic_string<T> param, S32 secFromEpoch);

-	LL_COMMON_API static S32 format(std::basic_string<T>& s, const format_map_t& substitutions);

-	LL_COMMON_API static S32 format(std::basic_string<T>& s, const LLSD& substitutions);

-	LL_COMMON_API static bool simpleReplacement(std::basic_string<T>& replacement, std::basic_string<T> token, const format_map_t& substitutions);

-	LL_COMMON_API static bool simpleReplacement(std::basic_string<T>& replacement, std::basic_string<T> token, const LLSD& substitutions);

-	static void setLocale (std::string inLocale) {sLocale = inLocale;};

-	static std::string getLocale (void) {return sLocale;};

-	

-	static bool isValidIndex(const std::basic_string<T>& string, size_type i)

-	{

-		return !string.empty() && (0 <= i) && (i <= string.size());

-	}

-

-	static void	trimHead(std::basic_string<T>& string);

-	static void	trimTail(std::basic_string<T>& string);

-	static void	trim(std::basic_string<T>& string)	{ trimHead(string); trimTail(string); }

-	static void truncate(std::basic_string<T>& string, size_type count);

-

-	static void	toUpper(std::basic_string<T>& string);

-	static void	toLower(std::basic_string<T>& string);

-	

-	// True if this is the head of s.

-	static BOOL	isHead( const std::basic_string<T>& string, const T* s ); 

-

-	/**

-	 * @brief Returns true if string starts with substr

-	 *

-	 * If etither string or substr are empty, this method returns false.

-	 */

-	static bool startsWith(

-		const std::basic_string<T>& string,

-		const std::basic_string<T>& substr);

-

-	/**

-	 * @brief Returns true if string ends in substr

-	 *

-	 * If etither string or substr are empty, this method returns false.

-	 */

-	static bool endsWith(

-		const std::basic_string<T>& string,

-		const std::basic_string<T>& substr);

-

-	static void	addCRLF(std::basic_string<T>& string);

-	static void	removeCRLF(std::basic_string<T>& string);

-

-	static void	replaceTabsWithSpaces( std::basic_string<T>& string, size_type spaces_per_tab );

-	static void	replaceNonstandardASCII( std::basic_string<T>& string, T replacement );

-	static void	replaceChar( std::basic_string<T>& string, T target, T replacement );

-	static void replaceString( std::basic_string<T>& string, std::basic_string<T> target, std::basic_string<T> replacement );

-	

-	static BOOL	containsNonprintable(const std::basic_string<T>& string);

-	static void	stripNonprintable(std::basic_string<T>& string);

-

-	/**

-	 * @brief Unsafe way to make ascii characters. You should probably

-	 * only call this when interacting with the host operating system.

-	 * The 1 byte std::string does not work correctly.

-	 * The 2 and 4 byte std::string probably work, so LLWStringUtil::_makeASCII

-	 * should work.

-	 */

-	static void _makeASCII(std::basic_string<T>& string);

-

-	// Conversion to other data types

-	static BOOL	convertToBOOL(const std::basic_string<T>& string, BOOL& value);

-	static BOOL	convertToU8(const std::basic_string<T>& string, U8& value);

-	static BOOL	convertToS8(const std::basic_string<T>& string, S8& value);

-	static BOOL	convertToS16(const std::basic_string<T>& string, S16& value);

-	static BOOL	convertToU16(const std::basic_string<T>& string, U16& value);

-	static BOOL	convertToU32(const std::basic_string<T>& string, U32& value);

-	static BOOL	convertToS32(const std::basic_string<T>& string, S32& value);

-	static BOOL	convertToF32(const std::basic_string<T>& string, F32& value);

-	static BOOL	convertToF64(const std::basic_string<T>& string, F64& value);

-

-	/////////////////////////////////////////////////////////////////////////////////////////

-	// Utility functions for working with char*'s and strings

-

-	// Like strcmp but also handles empty strings. Uses

-	// current locale.

-	static S32		compareStrings(const T* lhs, const T* rhs);

-	static S32		compareStrings(const std::basic_string<T>& lhs, const std::basic_string<T>& rhs);

-	

-	// case insensitive version of above. Uses current locale on

-	// Win32, and falls back to a non-locale aware comparison on

-	// Linux.

-	static S32		compareInsensitive(const T* lhs, const T* rhs);

-	static S32		compareInsensitive(const std::basic_string<T>& lhs, const std::basic_string<T>& rhs);

-

-	// Case sensitive comparison with good handling of numbers.  Does not use current locale.

-	// a.k.a. strdictcmp()

-	static S32		compareDict(const std::basic_string<T>& a, const std::basic_string<T>& b);

-

-	// Case *in*sensitive comparison with good handling of numbers.  Does not use current locale.

-	// a.k.a. strdictcmp()

-	static S32		compareDictInsensitive(const std::basic_string<T>& a, const std::basic_string<T>& b);

-

-	// Puts compareDict() in a form appropriate for LL container classes to use for sorting.

-	static BOOL		precedesDict( const std::basic_string<T>& a, const std::basic_string<T>& b );

-

-	// A replacement for strncpy.

-	// If the dst buffer is dst_size bytes long or more, ensures that dst is null terminated and holds

-	// up to dst_size-1 characters of src.

-	static void		copy(T* dst, const T* src, size_type dst_size);

-	

-	// Copies src into dst at a given offset.  

-	static void		copyInto(std::basic_string<T>& dst, const std::basic_string<T>& src, size_type offset);

-	

-	static bool		isPartOfWord(T c) { return (c == (T)'_') || LLStringOps::isAlnum(c); }

-

-

-#ifdef _DEBUG	

-	LL_COMMON_API static void		testHarness();

-#endif

-

-private:

-	LL_COMMON_API static size_type getSubstitution(const std::basic_string<T>& instr, size_type& start, std::vector<std::basic_string<T> >& tokens);

-};

-

-template<class T> std::basic_string<T> LLStringUtilBase<T>::null;

-template<class T> std::string LLStringUtilBase<T>::sLocale;

-

-typedef LLStringUtilBase<char> LLStringUtil;

-typedef LLStringUtilBase<llwchar> LLWStringUtil;

-typedef std::basic_string<llwchar> LLWString;

-

-//@ Use this where we want to disallow input in the form of "foo"

-//  This is used to catch places where english text is embedded in the code

-//  instead of in a translatable XUI file.

-class LLStringExplicit : public std::string

-{

-public:

-	explicit LLStringExplicit(const char* s) : std::string(s) {}

-	LLStringExplicit(const std::string& s) : std::string(s) {}

-	LLStringExplicit(const std::string& s, size_type pos, size_type n = std::string::npos) : std::string(s, pos, n) {}

-};

-

-struct LLDictionaryLess

-{

-public:

-	bool operator()(const std::string& a, const std::string& b)

-	{

-		return (LLStringUtil::precedesDict(a, b) ? true : false);

-	}

-};

-

-

-/**

- * Simple support functions

- */

-

-/**

- * @brief chop off the trailing characters in a string.

- *

- * This function works on bytes rather than glyphs, so this will

- * incorrectly truncate non-single byte strings.

- * Use utf8str_truncate() for utf8 strings

- * @return a copy of in string minus the trailing count bytes.

- */

-inline std::string chop_tail_copy(

-	const std::string& in,

-	std::string::size_type count)

-{

-	return std::string(in, 0, in.length() - count);

-}

-

-/**

- * @brief This translates a nybble stored as a hex value from 0-f back

- * to a nybble in the low order bits of the return byte.

- */

-LL_COMMON_API U8 hex_as_nybble(char hex);

-

-/**

- * @brief read the contents of a file into a string.

- *

- * Since this function has no concept of character encoding, most

- * anything you do with this method ill-advised. Please avoid.

- * @param str [out] The string which will have.

- * @param filename The full name of the file to read.

- * @return Returns true on success. If false, str is unmodified.

- */

-LL_COMMON_API bool _read_file_into_string(std::string& str, const std::string& filename);

-LL_COMMON_API bool iswindividual(llwchar elem);

-

-/**

- * Unicode support

- */

-

-// Make the incoming string a utf8 string. Replaces any unknown glyph

-// with the UNKOWN_CHARACTER. Once any unknown glph is found, the rest

-// of the data may not be recovered.

-LL_COMMON_API std::string rawstr_to_utf8(const std::string& raw);

-

-//

-// We should never use UTF16 except when communicating with Win32!

-//

-typedef std::basic_string<U16> llutf16string;

-

-LL_COMMON_API LLWString utf16str_to_wstring(const llutf16string &utf16str, S32 len);

-LL_COMMON_API LLWString utf16str_to_wstring(const llutf16string &utf16str);

-

-LL_COMMON_API llutf16string wstring_to_utf16str(const LLWString &utf32str, S32 len);

-LL_COMMON_API llutf16string wstring_to_utf16str(const LLWString &utf32str);

-

-LL_COMMON_API llutf16string utf8str_to_utf16str ( const std::string& utf8str, S32 len);

-LL_COMMON_API llutf16string utf8str_to_utf16str ( const std::string& utf8str );

-

-LL_COMMON_API LLWString utf8str_to_wstring(const std::string &utf8str, S32 len);

-LL_COMMON_API LLWString utf8str_to_wstring(const std::string &utf8str);

-// Same function, better name. JC

-inline LLWString utf8string_to_wstring(const std::string& utf8_string) { return utf8str_to_wstring(utf8_string); }

-

-//

-LL_COMMON_API S32 wchar_to_utf8chars(llwchar inchar, char* outchars);

-

-LL_COMMON_API std::string wstring_to_utf8str(const LLWString &utf32str, S32 len);

-LL_COMMON_API std::string wstring_to_utf8str(const LLWString &utf32str);

-

-LL_COMMON_API std::string utf16str_to_utf8str(const llutf16string &utf16str, S32 len);

-LL_COMMON_API std::string utf16str_to_utf8str(const llutf16string &utf16str);

-

-// Length of this UTF32 string in bytes when transformed to UTF8

-LL_COMMON_API S32 wstring_utf8_length(const LLWString& wstr); 

-

-// Length in bytes of this wide char in a UTF8 string

-LL_COMMON_API S32 wchar_utf8_length(const llwchar wc); 

-

-LL_COMMON_API std::string utf8str_tolower(const std::string& utf8str);

-

-// Length in llwchar (UTF-32) of the first len units (16 bits) of the given UTF-16 string.

-LL_COMMON_API S32 utf16str_wstring_length(const llutf16string &utf16str, S32 len);

-

-// Length in utf16string (UTF-16) of wlen wchars beginning at woffset.

-LL_COMMON_API S32 wstring_utf16_length(const LLWString & wstr, S32 woffset, S32 wlen);

-

-// Length in wstring (i.e., llwchar count) of a part of a wstring specified by utf16 length (i.e., utf16 units.)

-LL_COMMON_API S32 wstring_wstring_length_from_utf16_length(const LLWString & wstr, S32 woffset, S32 utf16_length, BOOL *unaligned = NULL);

-

-/**

- * @brief Properly truncate a utf8 string to a maximum byte count.

- * 

- * The returned string may be less than max_len if the truncation

- * happens in the middle of a glyph. If max_len is longer than the

- * string passed in, the return value == utf8str.

- * @param utf8str A valid utf8 string to truncate.

- * @param max_len The maximum number of bytes in the return value.

- * @return Returns a valid utf8 string with byte count <= max_len.

- */

-LL_COMMON_API std::string utf8str_truncate(const std::string& utf8str, const S32 max_len);

-

-LL_COMMON_API std::string utf8str_trim(const std::string& utf8str);

-

-LL_COMMON_API S32 utf8str_compare_insensitive(

-	const std::string& lhs,

-	const std::string& rhs);

-

-/**

- * @brief Replace all occurences of target_char with replace_char

- *

- * @param utf8str A utf8 string to process.

- * @param target_char The wchar to be replaced

- * @param replace_char The wchar which is written on replace

- */

-LL_COMMON_API std::string utf8str_substChar(

-	const std::string& utf8str,

-	const llwchar target_char,

-	const llwchar replace_char);

-

-LL_COMMON_API std::string utf8str_makeASCII(const std::string& utf8str);

-

-// Hack - used for evil notecards.

-LL_COMMON_API std::string mbcsstring_makeASCII(const std::string& str); 

-

-LL_COMMON_API std::string utf8str_removeCRLF(const std::string& utf8str);

-

-

-#if LL_WINDOWS

-/* @name Windows string helpers

- */

-//@{

-

-/**

- * @brief Implementation the expected snprintf interface.

- *

- * If the size of the passed in buffer is not large enough to hold the string,

- * two bad things happen:

- * 1. resulting formatted string is NOT null terminated

- * 2. Depending on the platform, the return value could be a) the required

- *    size of the buffer to copy the entire formatted string or b) -1.

- *    On Windows with VS.Net 2003, it returns -1 e.g. 

- *

- * safe_snprintf always adds a NULL terminator so that the caller does not

- * need to check for return value or need to add the NULL terminator.

- * It does not, however change the return value - to let the caller know

- * that the passed in buffer size was not large enough to hold the

- * formatted string.

- *

- */

-

-// Deal with the differeneces on Windows

-namespace snprintf_hack

-{

-	LL_COMMON_API int snprintf(char *str, size_t size, const char *format, ...);

-}

-

-using snprintf_hack::snprintf;

-

-/**

- * @brief Convert a wide string to std::string

- *

- * This replaces the unsafe W2A macro from ATL.

- */

-LL_COMMON_API std::string ll_convert_wide_to_string(const wchar_t* in);

-

-//@}

-#endif // LL_WINDOWS

-

-/**

- * Many of the 'strip' and 'replace' methods of LLStringUtilBase need

- * specialization to work with the signed char type.

- * Sadly, it is not possible (AFAIK) to specialize a single method of

- * a template class.

- * That stuff should go here.

- */

-namespace LLStringFn

-{

-	/**

-	 * @brief Replace all non-printable characters with replacement in

-	 * string.

-	 * NOTE - this will zap non-ascii

-	 *

-	 * @param [in,out] string the to modify. out value is the string

-	 * with zero non-printable characters.

-	 * @param The replacement character. use LL_UNKNOWN_CHAR if unsure.

-	 */

-	LL_COMMON_API void replace_nonprintable_in_ascii(

-		std::basic_string<char>& string,

-		char replacement);

-

-

-	/**

-	 * @brief Replace all non-printable characters and pipe characters

-	 * with replacement in a string.

-	 * NOTE - this will zap non-ascii

-	 *

-	 * @param [in,out] the string to modify. out value is the string

-	 * with zero non-printable characters and zero pipe characters.

-	 * @param The replacement character. use LL_UNKNOWN_CHAR if unsure.

-	 */

-	LL_COMMON_API void replace_nonprintable_and_pipe_in_ascii(std::basic_string<char>& str,

-									   char replacement);

-

-

-	/**

-	 * @brief Remove all characters that are not allowed in XML 1.0.

-	 * Returns a copy of the string with those characters removed.

-	 * Works with US ASCII and UTF-8 encoded strings.  JC

-	 */

-	LL_COMMON_API std::string strip_invalid_xml(const std::string& input);

-

-

-	/**

-	 * @brief Replace all control characters (0 <= c < 0x20) with replacement in

-	 * string.   This is safe for utf-8

-	 *

-	 * @param [in,out] string the to modify. out value is the string

-	 * with zero non-printable characters.

-	 * @param The replacement character. use LL_UNKNOWN_CHAR if unsure.

-	 */

-	LL_COMMON_API void replace_ascii_controlchars(

-		std::basic_string<char>& string,

-		char replacement);

-}

-

-////////////////////////////////////////////////////////////

-// NOTE: LLStringUtil::format, getTokens, and support functions moved to llstring.cpp.

-// There is no LLWStringUtil::format implementation currently.

-// Calling thse for anything other than LLStringUtil will produce link errors.

-

-////////////////////////////////////////////////////////////

-

-

-// static

-template<class T> 

-S32 LLStringUtilBase<T>::compareStrings(const T* lhs, const T* rhs)

-{	

-	S32 result;

-	if( lhs == rhs )

-	{

-		result = 0;

-	}

-	else

-	if ( !lhs || !lhs[0] )

-	{

-		result = ((!rhs || !rhs[0]) ? 0 : 1);

-	}

-	else

-	if ( !rhs || !rhs[0])

-	{

-		result = -1;

-	}

-	else

-	{

-		result = LLStringOps::collate(lhs, rhs);

-	}

-	return result;

-}

-

-//static 

-template<class T> 

-S32 LLStringUtilBase<T>::compareStrings(const std::basic_string<T>& lhs, const std::basic_string<T>& rhs)

-{

-	return LLStringOps::collate(lhs.c_str(), rhs.c_str());

-}

-

-// static

-template<class T> 

-S32 LLStringUtilBase<T>::compareInsensitive(const T* lhs, const T* rhs )

-{

-	S32 result;

-	if( lhs == rhs )

-	{

-		result = 0;

-	}

-	else

-	if ( !lhs || !lhs[0] )

-	{

-		result = ((!rhs || !rhs[0]) ? 0 : 1);

-	}

-	else

-	if ( !rhs || !rhs[0] )

-	{

-		result = -1;

-	}

-	else

-	{

-		std::basic_string<T> lhs_string(lhs);

-		std::basic_string<T> rhs_string(rhs);

-		LLStringUtilBase<T>::toUpper(lhs_string);

-		LLStringUtilBase<T>::toUpper(rhs_string);

-		result = LLStringOps::collate(lhs_string.c_str(), rhs_string.c_str());

-	}

-	return result;

-}

-

-//static 

-template<class T> 

-S32 LLStringUtilBase<T>::compareInsensitive(const std::basic_string<T>& lhs, const std::basic_string<T>& rhs)

-{

-	std::basic_string<T> lhs_string(lhs);

-	std::basic_string<T> rhs_string(rhs);

-	LLStringUtilBase<T>::toUpper(lhs_string);

-	LLStringUtilBase<T>::toUpper(rhs_string);

-	return LLStringOps::collate(lhs_string.c_str(), rhs_string.c_str());

-}

-

-// Case sensitive comparison with good handling of numbers.  Does not use current locale.

-// a.k.a. strdictcmp()

-

-//static 

-template<class T>

-S32 LLStringUtilBase<T>::compareDict(const std::basic_string<T>& astr, const std::basic_string<T>& bstr)

-{

-	const T* a = astr.c_str();

-	const T* b = bstr.c_str();

-	T ca, cb;

-	S32 ai, bi, cnt = 0;

-	S32 bias = 0;

-

-	ca = *(a++);

-	cb = *(b++);

-	while( ca && cb ){

-		if( bias==0 ){

-			if( LLStringOps::isUpper(ca) ){ ca = LLStringOps::toLower(ca); bias--; }

-			if( LLStringOps::isUpper(cb) ){ cb = LLStringOps::toLower(cb); bias++; }

-		}else{

-			if( LLStringOps::isUpper(ca) ){ ca = LLStringOps::toLower(ca); }

-			if( LLStringOps::isUpper(cb) ){ cb = LLStringOps::toLower(cb); }

-		}

-		if( LLStringOps::isDigit(ca) ){

-			if( cnt-->0 ){

-				if( cb!=ca ) break;

-			}else{

-				if( !LLStringOps::isDigit(cb) ) break;

-				for(ai=0; LLStringOps::isDigit(a[ai]); ai++);

-				for(bi=0; LLStringOps::isDigit(b[bi]); bi++);

-				if( ai<bi ){ ca=0; break; }

-				if( bi<ai ){ cb=0; break; }

-				if( ca!=cb ) break;

-				cnt = ai;

-			}

-		}else if( ca!=cb ){   break;

-		}

-		ca = *(a++);

-		cb = *(b++);

-	}

-	if( ca==cb ) ca += bias;

-	return ca-cb;

-}

-

-// static

-template<class T>

-S32 LLStringUtilBase<T>::compareDictInsensitive(const std::basic_string<T>& astr, const std::basic_string<T>& bstr)

-{

-	const T* a = astr.c_str();

-	const T* b = bstr.c_str();

-	T ca, cb;

-	S32 ai, bi, cnt = 0;

-

-	ca = *(a++);

-	cb = *(b++);

-	while( ca && cb ){

-		if( LLStringOps::isUpper(ca) ){ ca = LLStringOps::toLower(ca); }

-		if( LLStringOps::isUpper(cb) ){ cb = LLStringOps::toLower(cb); }

-		if( LLStringOps::isDigit(ca) ){

-			if( cnt-->0 ){

-				if( cb!=ca ) break;

-			}else{

-				if( !LLStringOps::isDigit(cb) ) break;

-				for(ai=0; LLStringOps::isDigit(a[ai]); ai++);

-				for(bi=0; LLStringOps::isDigit(b[bi]); bi++);

-				if( ai<bi ){ ca=0; break; }

-				if( bi<ai ){ cb=0; break; }

-				if( ca!=cb ) break;

-				cnt = ai;

-			}

-		}else if( ca!=cb ){   break;

-		}

-		ca = *(a++);

-		cb = *(b++);

-	}

-	return ca-cb;

-}

-

-// Puts compareDict() in a form appropriate for LL container classes to use for sorting.

-// static 

-template<class T> 

-BOOL LLStringUtilBase<T>::precedesDict( const std::basic_string<T>& a, const std::basic_string<T>& b )

-{

-	if( a.size() && b.size() )

-	{

-		return (LLStringUtilBase<T>::compareDict(a.c_str(), b.c_str()) < 0);

-	}

-	else

-	{

-		return (!b.empty());

-	}

-}

-

-//static

-template<class T> 

-void LLStringUtilBase<T>::toUpper(std::basic_string<T>& string)	

-{ 

-	if( !string.empty() )

-	{ 

-		std::transform(

-			string.begin(),

-			string.end(),

-			string.begin(),

-			(T(*)(T)) &LLStringOps::toUpper);

-	}

-}

-

-//static

-template<class T> 

-void LLStringUtilBase<T>::toLower(std::basic_string<T>& string)

-{ 

-	if( !string.empty() )

-	{ 

-		std::transform(

-			string.begin(),

-			string.end(),

-			string.begin(),

-			(T(*)(T)) &LLStringOps::toLower);

-	}

-}

-

-//static

-template<class T> 

-void LLStringUtilBase<T>::trimHead(std::basic_string<T>& string)

-{			

-	if( !string.empty() )

-	{

-		size_type i = 0;

-		while( i < string.length() && LLStringOps::isSpace( string[i] ) )

-		{

-			i++;

-		}

-		string.erase(0, i);

-	}

-}

-

-//static

-template<class T> 

-void LLStringUtilBase<T>::trimTail(std::basic_string<T>& string)

-{			

-	if( string.size() )

-	{

-		size_type len = string.length();

-		size_type i = len;

-		while( i > 0 && LLStringOps::isSpace( string[i-1] ) )

-		{

-			i--;

-		}

-

-		string.erase( i, len - i );

-	}

-}

-

-

-// Replace line feeds with carriage return-line feed pairs.

-//static

-template<class T>

-void LLStringUtilBase<T>::addCRLF(std::basic_string<T>& string)

-{

-	const T LF = 10;

-	const T CR = 13;

-

-	// Count the number of line feeds

-	size_type count = 0;

-	size_type len = string.size();

-	size_type i;

-	for( i = 0; i < len; i++ )

-	{

-		if( string[i] == LF )

-		{

-			count++;

-		}

-	}

-

-	// Insert a carriage return before each line feed

-	if( count )

-	{

-		size_type size = len + count;

-		T *t = new T[size];

-		size_type j = 0;

-		for( i = 0; i < len; ++i )

-		{

-			if( string[i] == LF )

-			{

-				t[j] = CR;

-				++j;

-			}

-			t[j] = string[i];

-			++j;

-		}

-

-		string.assign(t, size);

-	}

-}

-

-// Remove all carriage returns

-//static

-template<class T> 

-void LLStringUtilBase<T>::removeCRLF(std::basic_string<T>& string)

-{

-	const T CR = 13;

-

-	size_type cr_count = 0;

-	size_type len = string.size();

-	size_type i;

-	for( i = 0; i < len - cr_count; i++ )

-	{

-		if( string[i+cr_count] == CR )

-		{

-			cr_count++;

-		}

-

-		string[i] = string[i+cr_count];

-	}

-	string.erase(i, cr_count);

-}

-

-//static

-template<class T> 

-void LLStringUtilBase<T>::replaceChar( std::basic_string<T>& string, T target, T replacement )

-{

-	size_type found_pos = 0;

-	while( (found_pos = string.find(target, found_pos)) != std::basic_string<T>::npos ) 

-	{

-		string[found_pos] = replacement;

-		found_pos++; // avoid infinite defeat if target == replacement

-	}

-}

-

-//static

-template<class T> 

-void LLStringUtilBase<T>::replaceString( std::basic_string<T>& string, std::basic_string<T> target, std::basic_string<T> replacement )

-{

-	size_type found_pos = 0;

-	while( (found_pos = string.find(target, found_pos)) != std::basic_string<T>::npos )

-	{

-		string.replace( found_pos, target.length(), replacement );

-		found_pos += replacement.length(); // avoid infinite defeat if replacement contains target

-	}

-}

-

-//static

-template<class T> 

-void LLStringUtilBase<T>::replaceNonstandardASCII( std::basic_string<T>& string, T replacement )

-{

-	const char LF = 10;

-	const S8 MIN = 32;

-//	const S8 MAX = 127;

-

-	size_type len = string.size();

-	for( size_type i = 0; i < len; i++ )

-	{

-		// No need to test MAX < mText[i] because we treat mText[i] as a signed char,

-		// which has a max value of 127.

-		if( ( S8(string[i]) < MIN ) && (string[i] != LF) )

-		{

-			string[i] = replacement;

-		}

-	}

-}

-

-//static

-template<class T> 

-void LLStringUtilBase<T>::replaceTabsWithSpaces( std::basic_string<T>& str, size_type spaces_per_tab )

-{

-	const T TAB = '\t';

-	const T SPACE = ' ';

-

-	std::basic_string<T> out_str;

-	// Replace tabs with spaces

-	for (size_type i = 0; i < str.length(); i++)

-	{

-		if (str[i] == TAB)

-		{

-			for (size_type j = 0; j < spaces_per_tab; j++)

-				out_str += SPACE;

-		}

-		else

-		{

-			out_str += str[i];

-		}

-	}

-	str = out_str;

-}

-

-//static

-template<class T> 

-BOOL LLStringUtilBase<T>::containsNonprintable(const std::basic_string<T>& string)

-{

-	const char MIN = 32;

-	BOOL rv = FALSE;

-	for (size_type i = 0; i < string.size(); i++)

-	{

-		if(string[i] < MIN)

-		{

-			rv = TRUE;

-			break;

-		}

-	}

-	return rv;

-}

-

-//static

-template<class T> 

-void LLStringUtilBase<T>::stripNonprintable(std::basic_string<T>& string)

-{

-	const char MIN = 32;

-	size_type j = 0;

-	if (string.empty())

-	{

-		return;

-	}

-	size_t src_size = string.size();

-	char* c_string = new char[src_size + 1];

-	if(c_string == NULL)

-	{

-		return;

-	}

-	copy(c_string, string.c_str(), src_size+1);

-	char* write_head = &c_string[0];

-	for (size_type i = 0; i < src_size; i++)

-	{

-		char* read_head = &string[i];

-		write_head = &c_string[j];

-		if(!(*read_head < MIN))

-		{

-			*write_head = *read_head;

-			++j;

-		}

-	}

-	c_string[j]= '\0';

-	string = c_string;

-	delete []c_string;

-}

-

-template<class T> 

-void LLStringUtilBase<T>::_makeASCII(std::basic_string<T>& string)

-{

-	// Replace non-ASCII chars with LL_UNKNOWN_CHAR

-	for (size_type i = 0; i < string.length(); i++)

-	{

-		if (string[i] > 0x7f)

-		{

-			string[i] = LL_UNKNOWN_CHAR;

-		}

-	}

-}

-

-// static

-template<class T> 

-void LLStringUtilBase<T>::copy( T* dst, const T* src, size_type dst_size )

-{

-	if( dst_size > 0 )

-	{

-		size_type min_len = 0;

-		if( src )

-		{

-			min_len = llmin( dst_size - 1, strlen( src ) );  /* Flawfinder: ignore */

-			memcpy(dst, src, min_len * sizeof(T));		/* Flawfinder: ignore */

-		}

-		dst[min_len] = '\0';

-	}

-}

-

-// static

-template<class T> 

-void LLStringUtilBase<T>::copyInto(std::basic_string<T>& dst, const std::basic_string<T>& src, size_type offset)

-{

-	if ( offset == dst.length() )

-	{

-		// special case - append to end of string and avoid expensive

-		// (when strings are large) string manipulations

-		dst += src;

-	}

-	else

-	{

-		std::basic_string<T> tail = dst.substr(offset);

-

-		dst = dst.substr(0, offset);

-		dst += src;

-		dst += tail;

-	};

-}

-

-// True if this is the head of s.

-//static

-template<class T> 

-BOOL LLStringUtilBase<T>::isHead( const std::basic_string<T>& string, const T* s ) 

-{ 

-	if( string.empty() )

-	{

-		// Early exit

-		return FALSE;

-	}

-	else

-	{

-		return (strncmp( s, string.c_str(), string.size() ) == 0);

-	}

-}

-

-// static

-template<class T> 

-bool LLStringUtilBase<T>::startsWith(

-	const std::basic_string<T>& string,

-	const std::basic_string<T>& substr)

-{

-	if(string.empty() || (substr.empty())) return false;

-	if(0 == string.find(substr)) return true;

-	return false;

-}

-

-// static

-template<class T> 

-bool LLStringUtilBase<T>::endsWith(

-	const std::basic_string<T>& string,

-	const std::basic_string<T>& substr)

-{

-	if(string.empty() || (substr.empty())) return false;

-	std::string::size_type idx = string.rfind(substr);

-	if(std::string::npos == idx) return false;

-	return (idx == (string.size() - substr.size()));

-}

-

-

-template<class T> 

-BOOL LLStringUtilBase<T>::convertToBOOL(const std::basic_string<T>& string, BOOL& value)

-{

-	if( string.empty() )

-	{

-		return FALSE;

-	}

-

-	std::basic_string<T> temp( string );

-	trim(temp);

-	if( 

-		(temp == "1") || 

-		(temp == "T") || 

-		(temp == "t") || 

-		(temp == "TRUE") || 

-		(temp == "true") || 

-		(temp == "True") )

-	{

-		value = TRUE;

-		return TRUE;

-	}

-	else

-	if( 

-		(temp == "0") || 

-		(temp == "F") || 

-		(temp == "f") || 

-		(temp == "FALSE") || 

-		(temp == "false") || 

-		(temp == "False") )

-	{

-		value = FALSE;

-		return TRUE;

-	}

-

-	return FALSE;

-}

-

-template<class T> 

-BOOL LLStringUtilBase<T>::convertToU8(const std::basic_string<T>& string, U8& value) 

-{

-	S32 value32 = 0;

-	BOOL success = convertToS32(string, value32);

-	if( success && (U8_MIN <= value32) && (value32 <= U8_MAX) )

-	{

-		value = (U8) value32;

-		return TRUE;

-	}

-	return FALSE;

-}

-

-template<class T> 

-BOOL LLStringUtilBase<T>::convertToS8(const std::basic_string<T>& string, S8& value) 

-{

-	S32 value32 = 0;

-	BOOL success = convertToS32(string, value32);

-	if( success && (S8_MIN <= value32) && (value32 <= S8_MAX) )

-	{

-		value = (S8) value32;

-		return TRUE;

-	}

-	return FALSE;

-}

-

-template<class T> 

-BOOL LLStringUtilBase<T>::convertToS16(const std::basic_string<T>& string, S16& value) 

-{

-	S32 value32 = 0;

-	BOOL success = convertToS32(string, value32);

-	if( success && (S16_MIN <= value32) && (value32 <= S16_MAX) )

-	{

-		value = (S16) value32;

-		return TRUE;

-	}

-	return FALSE;

-}

-

-template<class T> 

-BOOL LLStringUtilBase<T>::convertToU16(const std::basic_string<T>& string, U16& value) 

-{

-	S32 value32 = 0;

-	BOOL success = convertToS32(string, value32);

-	if( success && (U16_MIN <= value32) && (value32 <= U16_MAX) )

-	{

-		value = (U16) value32;

-		return TRUE;

-	}

-	return FALSE;

-}

-

-template<class T> 

-BOOL LLStringUtilBase<T>::convertToU32(const std::basic_string<T>& string, U32& value) 

-{

-	if( string.empty() )

-	{

-		return FALSE;

-	}

-

-	std::basic_string<T> temp( string );

-	trim(temp);

-	U32 v;

-	std::basic_istringstream<T> i_stream((std::basic_string<T>)temp);

-	if(i_stream >> v)

-	{

-		value = v;

-		return TRUE;

-	}

-	return FALSE;

-}

-

-template<class T> 

-BOOL LLStringUtilBase<T>::convertToS32(const std::basic_string<T>& string, S32& value) 

-{

-	if( string.empty() )

-	{

-		return FALSE;

-	}

-

-	std::basic_string<T> temp( string );

-	trim(temp);

-	S32 v;

-	std::basic_istringstream<T> i_stream((std::basic_string<T>)temp);

-	if(i_stream >> v)

-	{

-		//TODO: figure out overflow and underflow reporting here

-		//if((LONG_MAX == v) || (LONG_MIN == v))

-		//{

-		//	// Underflow or overflow

-		//	return FALSE;

-		//}

-

-		value = v;

-		return TRUE;

-	}

-	return FALSE;

-}

-

-template<class T> 

-BOOL LLStringUtilBase<T>::convertToF32(const std::basic_string<T>& string, F32& value) 

-{

-	F64 value64 = 0.0;

-	BOOL success = convertToF64(string, value64);

-	if( success && (-F32_MAX <= value64) && (value64 <= F32_MAX) )

-	{

-		value = (F32) value64;

-		return TRUE;

-	}

-	return FALSE;

-}

-

-template<class T> 

-BOOL LLStringUtilBase<T>::convertToF64(const std::basic_string<T>& string, F64& value)

-{

-	if( string.empty() )

-	{

-		return FALSE;

-	}

-

-	std::basic_string<T> temp( string );

-	trim(temp);

-	F64 v;

-	std::basic_istringstream<T> i_stream((std::basic_string<T>)temp);

-	if(i_stream >> v)

-	{

-		//TODO: figure out overflow and underflow reporting here

-		//if( ((-HUGE_VAL == v) || (HUGE_VAL == v))) )

-		//{

-		//	// Underflow or overflow

-		//	return FALSE;

-		//}

-

-		value = v;

-		return TRUE;

-	}

-	return FALSE;

-}

-

-template<class T> 

-void LLStringUtilBase<T>::truncate(std::basic_string<T>& string, size_type count)

-{

-	size_type cur_size = string.size();

-	string.resize(count < cur_size ? count : cur_size);

-}

-

-#endif  // LL_STRING_H

+/** 
+ * @file llstring.h
+ * @brief String utility functions and std::string class.
+ *
+ * $LicenseInfo:firstyear=2001&license=viewergpl$
+ * 
+ * Copyright (c) 2001-2009, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at
+ * http://secondlifegrid.net/programs/open_source/licensing/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_LLSTRING_H
+#define LL_LLSTRING_H
+
+#include <string>
+#include <cstdio>
+#include <locale>
+#include <iomanip>
+#include "llsd.h"
+#include "llfasttimer.h"
+
+#if LL_LINUX || LL_SOLARIS
+#include <wctype.h>
+#include <wchar.h>
+#endif
+
+#include <string.h>
+
+#if LL_SOLARIS
+// stricmp and strnicmp do not exist on Solaris:
+#define stricmp strcasecmp
+#define strnicmp strncasecmp
+#endif
+
+const char LL_UNKNOWN_CHAR = '?';
+
+#if LL_DARWIN || LL_LINUX || LL_SOLARIS
+// Template specialization of char_traits for U16s. Only necessary on Mac and Linux (exists on Windows already)
+#include <cstring>
+
+namespace std
+{
+template<>
+struct char_traits<U16>
+{
+	typedef U16 		char_type;
+	typedef int 	    int_type;
+	typedef streampos 	pos_type;
+	typedef streamoff 	off_type;
+	typedef mbstate_t 	state_type;
+	
+	static void 
+		assign(char_type& __c1, const char_type& __c2)
+	{ __c1 = __c2; }
+	
+	static bool 
+		eq(const char_type& __c1, const char_type& __c2)
+	{ return __c1 == __c2; }
+	
+	static bool 
+		lt(const char_type& __c1, const char_type& __c2)
+	{ return __c1 < __c2; }
+	
+	static int 
+		compare(const char_type* __s1, const char_type* __s2, size_t __n)
+	{ return memcmp(__s1, __s2, __n * sizeof(char_type)); }
+	
+	static size_t
+		length(const char_type* __s)
+	{
+		const char_type *cur_char = __s;
+		while (*cur_char != 0)
+		{
+			++cur_char;
+		}
+		return cur_char - __s;
+	}
+	
+	static const char_type* 
+		find(const char_type* __s, size_t __n, const char_type& __a)
+	{ return static_cast<const char_type*>(memchr(__s, __a, __n * sizeof(char_type))); }
+	
+	static char_type* 
+		move(char_type* __s1, const char_type* __s2, size_t __n)
+	{ return static_cast<char_type*>(memmove(__s1, __s2, __n * sizeof(char_type))); }
+	
+	static char_type* 
+		copy(char_type* __s1, const char_type* __s2, size_t __n)
+	{  return static_cast<char_type*>(memcpy(__s1, __s2, __n * sizeof(char_type))); }	/* Flawfinder: ignore */
+	
+	static char_type* 
+		assign(char_type* __s, size_t __n, char_type __a)
+	{ 
+		// This isn't right.
+		//return static_cast<char_type*>(memset(__s, __a, __n * sizeof(char_type))); 
+		
+		// I don't think there's a standard 'memset' for 16-bit values.
+		// Do this the old-fashioned way.
+		
+		size_t __i;
+		for(__i = 0; __i < __n; __i++)
+		{
+			__s[__i] = __a;
+		}
+		return __s; 
+	}
+	
+	static char_type 
+		to_char_type(const int_type& __c)
+	{ return static_cast<char_type>(__c); }
+	
+	static int_type 
+		to_int_type(const char_type& __c)
+	{ return static_cast<int_type>(__c); }
+	
+	static bool 
+		eq_int_type(const int_type& __c1, const int_type& __c2)
+	{ return __c1 == __c2; }
+	
+	static int_type 
+		eof() { return static_cast<int_type>(EOF); }
+	
+	static int_type 
+		not_eof(const int_type& __c)
+      { return (__c == eof()) ? 0 : __c; }
+  };
+};
+#endif
+
+class LL_COMMON_API LLStringOps
+{
+private:
+	static long sPacificTimeOffset;
+	static long sLocalTimeOffset;
+	static bool sPacificDaylightTime;
+	static std::map<std::string, std::string> datetimeToCodes;
+
+public:
+	static char toUpper(char elem) { return toupper((unsigned char)elem); }
+	static llwchar toUpper(llwchar elem) { return towupper(elem); }
+	
+	static char toLower(char elem) { return tolower((unsigned char)elem); }
+	static llwchar toLower(llwchar elem) { return towlower(elem); }
+
+	static bool isSpace(char elem) { return isspace((unsigned char)elem) != 0; }
+	static bool isSpace(llwchar elem) { return iswspace(elem) != 0; }
+
+	static bool isUpper(char elem) { return isupper((unsigned char)elem) != 0; }
+	static bool isUpper(llwchar elem) { return iswupper(elem) != 0; }
+
+	static bool isLower(char elem) { return islower((unsigned char)elem) != 0; }
+	static bool isLower(llwchar elem) { return iswlower(elem) != 0; }
+
+	static bool isDigit(char a) { return isdigit((unsigned char)a) != 0; }
+	static bool isDigit(llwchar a) { return iswdigit(a) != 0; }
+
+	static bool isPunct(char a) { return ispunct((unsigned char)a) != 0; }
+	static bool isPunct(llwchar a) { return iswpunct(a) != 0; }
+
+	static bool isAlnum(char a) { return isalnum((unsigned char)a) != 0; }
+	static bool isAlnum(llwchar a) { return iswalnum(a) != 0; }
+
+	static S32	collate(const char* a, const char* b) { return strcoll(a, b); }
+	static S32	collate(const llwchar* a, const llwchar* b);
+
+	static void setupDatetimeInfo(bool pacific_daylight_time);
+	static long getPacificTimeOffset(void) { return sPacificTimeOffset;}
+	static long getLocalTimeOffset(void) { return sLocalTimeOffset;}
+	// Is the Pacific time zone (aka server time zone)
+	// currently in daylight savings time?
+	static bool getPacificDaylightTime(void) { return sPacificDaylightTime;}
+
+	static std::string getDatetimeCode (std::string key);
+};
+
+/**
+ * @brief Return a string constructed from in without crashing if the
+ * pointer is NULL.
+ */
+LL_COMMON_API std::string ll_safe_string(const char* in);
+LL_COMMON_API std::string ll_safe_string(const char* in, S32 maxlen);
+
+
+// Allowing assignments from non-strings into format_map_t is apparently
+// *really* error-prone, so subclass std::string with just basic c'tors.
+class LLFormatMapString
+{
+public:
+	LLFormatMapString() {};
+	LLFormatMapString(const char* s) : mString(ll_safe_string(s)) {};
+	LLFormatMapString(const std::string& s) : mString(s) {};
+	operator std::string() const { return mString; }
+	bool operator<(const LLFormatMapString& rhs) const { return mString < rhs.mString; }
+	std::size_t length() const { return mString.length(); }
+	
+private:
+	std::string mString;
+};
+
+template <class T>
+class LLStringUtilBase
+{
+private:
+	static std::string sLocale;
+
+public:
+	typedef typename std::basic_string<T>::size_type size_type;
+	
+public:
+	/////////////////////////////////////////////////////////////////////////////////////////
+	// Static Utility functions that operate on std::strings
+
+	static std::basic_string<T> null;
+	
+	typedef std::map<LLFormatMapString, LLFormatMapString> format_map_t;
+	LL_COMMON_API static void getTokens(const std::basic_string<T>& instr, std::vector<std::basic_string<T> >& tokens, const std::basic_string<T>& delims);
+	LL_COMMON_API static void formatNumber(std::basic_string<T>& numStr, std::basic_string<T> decimals);
+	LL_COMMON_API static bool formatDatetime(std::basic_string<T>& replacement, std::basic_string<T> token, std::basic_string<T> param, S32 secFromEpoch);
+	LL_COMMON_API static S32 format(std::basic_string<T>& s, const format_map_t& substitutions);
+	LL_COMMON_API static S32 format(std::basic_string<T>& s, const LLSD& substitutions);
+	LL_COMMON_API static bool simpleReplacement(std::basic_string<T>& replacement, std::basic_string<T> token, const format_map_t& substitutions);
+	LL_COMMON_API static bool simpleReplacement(std::basic_string<T>& replacement, std::basic_string<T> token, const LLSD& substitutions);
+	static void setLocale (std::string inLocale) {sLocale = inLocale;};
+	static std::string getLocale (void) {return sLocale;};
+	
+	static bool isValidIndex(const std::basic_string<T>& string, size_type i)
+	{
+		return !string.empty() && (0 <= i) && (i <= string.size());
+	}
+
+	static void	trimHead(std::basic_string<T>& string);
+	static void	trimTail(std::basic_string<T>& string);
+	static void	trim(std::basic_string<T>& string)	{ trimHead(string); trimTail(string); }
+	static void truncate(std::basic_string<T>& string, size_type count);
+
+	static void	toUpper(std::basic_string<T>& string);
+	static void	toLower(std::basic_string<T>& string);
+	
+	// True if this is the head of s.
+	static BOOL	isHead( const std::basic_string<T>& string, const T* s ); 
+
+	/**
+	 * @brief Returns true if string starts with substr
+	 *
+	 * If etither string or substr are empty, this method returns false.
+	 */
+	static bool startsWith(
+		const std::basic_string<T>& string,
+		const std::basic_string<T>& substr);
+
+	/**
+	 * @brief Returns true if string ends in substr
+	 *
+	 * If etither string or substr are empty, this method returns false.
+	 */
+	static bool endsWith(
+		const std::basic_string<T>& string,
+		const std::basic_string<T>& substr);
+
+	static void	addCRLF(std::basic_string<T>& string);
+	static void	removeCRLF(std::basic_string<T>& string);
+
+	static void	replaceTabsWithSpaces( std::basic_string<T>& string, size_type spaces_per_tab );
+	static void	replaceNonstandardASCII( std::basic_string<T>& string, T replacement );
+	static void	replaceChar( std::basic_string<T>& string, T target, T replacement );
+	static void replaceString( std::basic_string<T>& string, std::basic_string<T> target, std::basic_string<T> replacement );
+	
+	static BOOL	containsNonprintable(const std::basic_string<T>& string);
+	static void	stripNonprintable(std::basic_string<T>& string);
+
+	/**
+	 * @brief Unsafe way to make ascii characters. You should probably
+	 * only call this when interacting with the host operating system.
+	 * The 1 byte std::string does not work correctly.
+	 * The 2 and 4 byte std::string probably work, so LLWStringUtil::_makeASCII
+	 * should work.
+	 */
+	static void _makeASCII(std::basic_string<T>& string);
+
+	// Conversion to other data types
+	static BOOL	convertToBOOL(const std::basic_string<T>& string, BOOL& value);
+	static BOOL	convertToU8(const std::basic_string<T>& string, U8& value);
+	static BOOL	convertToS8(const std::basic_string<T>& string, S8& value);
+	static BOOL	convertToS16(const std::basic_string<T>& string, S16& value);
+	static BOOL	convertToU16(const std::basic_string<T>& string, U16& value);
+	static BOOL	convertToU32(const std::basic_string<T>& string, U32& value);
+	static BOOL	convertToS32(const std::basic_string<T>& string, S32& value);
+	static BOOL	convertToF32(const std::basic_string<T>& string, F32& value);
+	static BOOL	convertToF64(const std::basic_string<T>& string, F64& value);
+
+	/////////////////////////////////////////////////////////////////////////////////////////
+	// Utility functions for working with char*'s and strings
+
+	// Like strcmp but also handles empty strings. Uses
+	// current locale.
+	static S32		compareStrings(const T* lhs, const T* rhs);
+	static S32		compareStrings(const std::basic_string<T>& lhs, const std::basic_string<T>& rhs);
+	
+	// case insensitive version of above. Uses current locale on
+	// Win32, and falls back to a non-locale aware comparison on
+	// Linux.
+	static S32		compareInsensitive(const T* lhs, const T* rhs);
+	static S32		compareInsensitive(const std::basic_string<T>& lhs, const std::basic_string<T>& rhs);
+
+	// Case sensitive comparison with good handling of numbers.  Does not use current locale.
+	// a.k.a. strdictcmp()
+	static S32		compareDict(const std::basic_string<T>& a, const std::basic_string<T>& b);
+
+	// Case *in*sensitive comparison with good handling of numbers.  Does not use current locale.
+	// a.k.a. strdictcmp()
+	static S32		compareDictInsensitive(const std::basic_string<T>& a, const std::basic_string<T>& b);
+
+	// Puts compareDict() in a form appropriate for LL container classes to use for sorting.
+	static BOOL		precedesDict( const std::basic_string<T>& a, const std::basic_string<T>& b );
+
+	// A replacement for strncpy.
+	// If the dst buffer is dst_size bytes long or more, ensures that dst is null terminated and holds
+	// up to dst_size-1 characters of src.
+	static void		copy(T* dst, const T* src, size_type dst_size);
+	
+	// Copies src into dst at a given offset.  
+	static void		copyInto(std::basic_string<T>& dst, const std::basic_string<T>& src, size_type offset);
+	
+	static bool		isPartOfWord(T c) { return (c == (T)'_') || LLStringOps::isAlnum(c); }
+
+
+#ifdef _DEBUG	
+	LL_COMMON_API static void		testHarness();
+#endif
+
+private:
+	LL_COMMON_API static size_type getSubstitution(const std::basic_string<T>& instr, size_type& start, std::vector<std::basic_string<T> >& tokens);
+};
+
+template<class T> std::basic_string<T> LLStringUtilBase<T>::null;
+template<class T> std::string LLStringUtilBase<T>::sLocale;
+
+typedef LLStringUtilBase<char> LLStringUtil;
+typedef LLStringUtilBase<llwchar> LLWStringUtil;
+typedef std::basic_string<llwchar> LLWString;
+
+//@ Use this where we want to disallow input in the form of "foo"
+//  This is used to catch places where english text is embedded in the code
+//  instead of in a translatable XUI file.
+class LLStringExplicit : public std::string
+{
+public:
+	explicit LLStringExplicit(const char* s) : std::string(s) {}
+	LLStringExplicit(const std::string& s) : std::string(s) {}
+	LLStringExplicit(const std::string& s, size_type pos, size_type n = std::string::npos) : std::string(s, pos, n) {}
+};
+
+struct LLDictionaryLess
+{
+public:
+	bool operator()(const std::string& a, const std::string& b)
+	{
+		return (LLStringUtil::precedesDict(a, b) ? true : false);
+	}
+};
+
+
+/**
+ * Simple support functions
+ */
+
+/**
+ * @brief chop off the trailing characters in a string.
+ *
+ * This function works on bytes rather than glyphs, so this will
+ * incorrectly truncate non-single byte strings.
+ * Use utf8str_truncate() for utf8 strings
+ * @return a copy of in string minus the trailing count bytes.
+ */
+inline std::string chop_tail_copy(
+	const std::string& in,
+	std::string::size_type count)
+{
+	return std::string(in, 0, in.length() - count);
+}
+
+/**
+ * @brief This translates a nybble stored as a hex value from 0-f back
+ * to a nybble in the low order bits of the return byte.
+ */
+LL_COMMON_API U8 hex_as_nybble(char hex);
+
+/**
+ * @brief read the contents of a file into a string.
+ *
+ * Since this function has no concept of character encoding, most
+ * anything you do with this method ill-advised. Please avoid.
+ * @param str [out] The string which will have.
+ * @param filename The full name of the file to read.
+ * @return Returns true on success. If false, str is unmodified.
+ */
+LL_COMMON_API bool _read_file_into_string(std::string& str, const std::string& filename);
+LL_COMMON_API bool iswindividual(llwchar elem);
+
+/**
+ * Unicode support
+ */
+
+// Make the incoming string a utf8 string. Replaces any unknown glyph
+// with the UNKOWN_CHARACTER. Once any unknown glph is found, the rest
+// of the data may not be recovered.
+LL_COMMON_API std::string rawstr_to_utf8(const std::string& raw);
+
+//
+// We should never use UTF16 except when communicating with Win32!
+//
+typedef std::basic_string<U16> llutf16string;
+
+LL_COMMON_API LLWString utf16str_to_wstring(const llutf16string &utf16str, S32 len);
+LL_COMMON_API LLWString utf16str_to_wstring(const llutf16string &utf16str);
+
+LL_COMMON_API llutf16string wstring_to_utf16str(const LLWString &utf32str, S32 len);
+LL_COMMON_API llutf16string wstring_to_utf16str(const LLWString &utf32str);
+
+LL_COMMON_API llutf16string utf8str_to_utf16str ( const std::string& utf8str, S32 len);
+LL_COMMON_API llutf16string utf8str_to_utf16str ( const std::string& utf8str );
+
+LL_COMMON_API LLWString utf8str_to_wstring(const std::string &utf8str, S32 len);
+LL_COMMON_API LLWString utf8str_to_wstring(const std::string &utf8str);
+// Same function, better name. JC
+inline LLWString utf8string_to_wstring(const std::string& utf8_string) { return utf8str_to_wstring(utf8_string); }
+
+//
+LL_COMMON_API S32 wchar_to_utf8chars(llwchar inchar, char* outchars);
+
+LL_COMMON_API std::string wstring_to_utf8str(const LLWString &utf32str, S32 len);
+LL_COMMON_API std::string wstring_to_utf8str(const LLWString &utf32str);
+
+LL_COMMON_API std::string utf16str_to_utf8str(const llutf16string &utf16str, S32 len);
+LL_COMMON_API std::string utf16str_to_utf8str(const llutf16string &utf16str);
+
+// Length of this UTF32 string in bytes when transformed to UTF8
+LL_COMMON_API S32 wstring_utf8_length(const LLWString& wstr); 
+
+// Length in bytes of this wide char in a UTF8 string
+LL_COMMON_API S32 wchar_utf8_length(const llwchar wc); 
+
+LL_COMMON_API std::string utf8str_tolower(const std::string& utf8str);
+
+// Length in llwchar (UTF-32) of the first len units (16 bits) of the given UTF-16 string.
+LL_COMMON_API S32 utf16str_wstring_length(const llutf16string &utf16str, S32 len);
+
+// Length in utf16string (UTF-16) of wlen wchars beginning at woffset.
+LL_COMMON_API S32 wstring_utf16_length(const LLWString & wstr, S32 woffset, S32 wlen);
+
+// Length in wstring (i.e., llwchar count) of a part of a wstring specified by utf16 length (i.e., utf16 units.)
+LL_COMMON_API S32 wstring_wstring_length_from_utf16_length(const LLWString & wstr, S32 woffset, S32 utf16_length, BOOL *unaligned = NULL);
+
+/**
+ * @brief Properly truncate a utf8 string to a maximum byte count.
+ * 
+ * The returned string may be less than max_len if the truncation
+ * happens in the middle of a glyph. If max_len is longer than the
+ * string passed in, the return value == utf8str.
+ * @param utf8str A valid utf8 string to truncate.
+ * @param max_len The maximum number of bytes in the return value.
+ * @return Returns a valid utf8 string with byte count <= max_len.
+ */
+LL_COMMON_API std::string utf8str_truncate(const std::string& utf8str, const S32 max_len);
+
+LL_COMMON_API std::string utf8str_trim(const std::string& utf8str);
+
+LL_COMMON_API S32 utf8str_compare_insensitive(
+	const std::string& lhs,
+	const std::string& rhs);
+
+/**
+ * @brief Replace all occurences of target_char with replace_char
+ *
+ * @param utf8str A utf8 string to process.
+ * @param target_char The wchar to be replaced
+ * @param replace_char The wchar which is written on replace
+ */
+LL_COMMON_API std::string utf8str_substChar(
+	const std::string& utf8str,
+	const llwchar target_char,
+	const llwchar replace_char);
+
+LL_COMMON_API std::string utf8str_makeASCII(const std::string& utf8str);
+
+// Hack - used for evil notecards.
+LL_COMMON_API std::string mbcsstring_makeASCII(const std::string& str); 
+
+LL_COMMON_API std::string utf8str_removeCRLF(const std::string& utf8str);
+
+
+#if LL_WINDOWS
+/* @name Windows string helpers
+ */
+//@{
+
+/**
+ * @brief Implementation the expected snprintf interface.
+ *
+ * If the size of the passed in buffer is not large enough to hold the string,
+ * two bad things happen:
+ * 1. resulting formatted string is NOT null terminated
+ * 2. Depending on the platform, the return value could be a) the required
+ *    size of the buffer to copy the entire formatted string or b) -1.
+ *    On Windows with VS.Net 2003, it returns -1 e.g. 
+ *
+ * safe_snprintf always adds a NULL terminator so that the caller does not
+ * need to check for return value or need to add the NULL terminator.
+ * It does not, however change the return value - to let the caller know
+ * that the passed in buffer size was not large enough to hold the
+ * formatted string.
+ *
+ */
+
+// Deal with the differeneces on Windows
+namespace snprintf_hack
+{
+	LL_COMMON_API int snprintf(char *str, size_t size, const char *format, ...);
+}
+
+using snprintf_hack::snprintf;
+
+/**
+ * @brief Convert a wide string to std::string
+ *
+ * This replaces the unsafe W2A macro from ATL.
+ */
+LL_COMMON_API std::string ll_convert_wide_to_string(const wchar_t* in);
+
+//@}
+#endif // LL_WINDOWS
+
+/**
+ * Many of the 'strip' and 'replace' methods of LLStringUtilBase need
+ * specialization to work with the signed char type.
+ * Sadly, it is not possible (AFAIK) to specialize a single method of
+ * a template class.
+ * That stuff should go here.
+ */
+namespace LLStringFn
+{
+	/**
+	 * @brief Replace all non-printable characters with replacement in
+	 * string.
+	 * NOTE - this will zap non-ascii
+	 *
+	 * @param [in,out] string the to modify. out value is the string
+	 * with zero non-printable characters.
+	 * @param The replacement character. use LL_UNKNOWN_CHAR if unsure.
+	 */
+	LL_COMMON_API void replace_nonprintable_in_ascii(
+		std::basic_string<char>& string,
+		char replacement);
+
+
+	/**
+	 * @brief Replace all non-printable characters and pipe characters
+	 * with replacement in a string.
+	 * NOTE - this will zap non-ascii
+	 *
+	 * @param [in,out] the string to modify. out value is the string
+	 * with zero non-printable characters and zero pipe characters.
+	 * @param The replacement character. use LL_UNKNOWN_CHAR if unsure.
+	 */
+	LL_COMMON_API void replace_nonprintable_and_pipe_in_ascii(std::basic_string<char>& str,
+									   char replacement);
+
+
+	/**
+	 * @brief Remove all characters that are not allowed in XML 1.0.
+	 * Returns a copy of the string with those characters removed.
+	 * Works with US ASCII and UTF-8 encoded strings.  JC
+	 */
+	LL_COMMON_API std::string strip_invalid_xml(const std::string& input);
+
+
+	/**
+	 * @brief Replace all control characters (0 <= c < 0x20) with replacement in
+	 * string.   This is safe for utf-8
+	 *
+	 * @param [in,out] string the to modify. out value is the string
+	 * with zero non-printable characters.
+	 * @param The replacement character. use LL_UNKNOWN_CHAR if unsure.
+	 */
+	LL_COMMON_API void replace_ascii_controlchars(
+		std::basic_string<char>& string,
+		char replacement);
+}
+
+////////////////////////////////////////////////////////////
+// NOTE: LLStringUtil::format, getTokens, and support functions moved to llstring.cpp.
+// There is no LLWStringUtil::format implementation currently.
+// Calling thse for anything other than LLStringUtil will produce link errors.
+
+////////////////////////////////////////////////////////////
+
+
+// static
+template<class T> 
+S32 LLStringUtilBase<T>::compareStrings(const T* lhs, const T* rhs)
+{	
+	S32 result;
+	if( lhs == rhs )
+	{
+		result = 0;
+	}
+	else
+	if ( !lhs || !lhs[0] )
+	{
+		result = ((!rhs || !rhs[0]) ? 0 : 1);
+	}
+	else
+	if ( !rhs || !rhs[0])
+	{
+		result = -1;
+	}
+	else
+	{
+		result = LLStringOps::collate(lhs, rhs);
+	}
+	return result;
+}
+
+//static 
+template<class T> 
+S32 LLStringUtilBase<T>::compareStrings(const std::basic_string<T>& lhs, const std::basic_string<T>& rhs)
+{
+	return LLStringOps::collate(lhs.c_str(), rhs.c_str());
+}
+
+// static
+template<class T> 
+S32 LLStringUtilBase<T>::compareInsensitive(const T* lhs, const T* rhs )
+{
+	S32 result;
+	if( lhs == rhs )
+	{
+		result = 0;
+	}
+	else
+	if ( !lhs || !lhs[0] )
+	{
+		result = ((!rhs || !rhs[0]) ? 0 : 1);
+	}
+	else
+	if ( !rhs || !rhs[0] )
+	{
+		result = -1;
+	}
+	else
+	{
+		std::basic_string<T> lhs_string(lhs);
+		std::basic_string<T> rhs_string(rhs);
+		LLStringUtilBase<T>::toUpper(lhs_string);
+		LLStringUtilBase<T>::toUpper(rhs_string);
+		result = LLStringOps::collate(lhs_string.c_str(), rhs_string.c_str());
+	}
+	return result;
+}
+
+//static 
+template<class T> 
+S32 LLStringUtilBase<T>::compareInsensitive(const std::basic_string<T>& lhs, const std::basic_string<T>& rhs)
+{
+	std::basic_string<T> lhs_string(lhs);
+	std::basic_string<T> rhs_string(rhs);
+	LLStringUtilBase<T>::toUpper(lhs_string);
+	LLStringUtilBase<T>::toUpper(rhs_string);
+	return LLStringOps::collate(lhs_string.c_str(), rhs_string.c_str());
+}
+
+// Case sensitive comparison with good handling of numbers.  Does not use current locale.
+// a.k.a. strdictcmp()
+
+//static 
+template<class T>
+S32 LLStringUtilBase<T>::compareDict(const std::basic_string<T>& astr, const std::basic_string<T>& bstr)
+{
+	const T* a = astr.c_str();
+	const T* b = bstr.c_str();
+	T ca, cb;
+	S32 ai, bi, cnt = 0;
+	S32 bias = 0;
+
+	ca = *(a++);
+	cb = *(b++);
+	while( ca && cb ){
+		if( bias==0 ){
+			if( LLStringOps::isUpper(ca) ){ ca = LLStringOps::toLower(ca); bias--; }
+			if( LLStringOps::isUpper(cb) ){ cb = LLStringOps::toLower(cb); bias++; }
+		}else{
+			if( LLStringOps::isUpper(ca) ){ ca = LLStringOps::toLower(ca); }
+			if( LLStringOps::isUpper(cb) ){ cb = LLStringOps::toLower(cb); }
+		}
+		if( LLStringOps::isDigit(ca) ){
+			if( cnt-->0 ){
+				if( cb!=ca ) break;
+			}else{
+				if( !LLStringOps::isDigit(cb) ) break;
+				for(ai=0; LLStringOps::isDigit(a[ai]); ai++);
+				for(bi=0; LLStringOps::isDigit(b[bi]); bi++);
+				if( ai<bi ){ ca=0; break; }
+				if( bi<ai ){ cb=0; break; }
+				if( ca!=cb ) break;
+				cnt = ai;
+			}
+		}else if( ca!=cb ){   break;
+		}
+		ca = *(a++);
+		cb = *(b++);
+	}
+	if( ca==cb ) ca += bias;
+	return ca-cb;
+}
+
+// static
+template<class T>
+S32 LLStringUtilBase<T>::compareDictInsensitive(const std::basic_string<T>& astr, const std::basic_string<T>& bstr)
+{
+	const T* a = astr.c_str();
+	const T* b = bstr.c_str();
+	T ca, cb;
+	S32 ai, bi, cnt = 0;
+
+	ca = *(a++);
+	cb = *(b++);
+	while( ca && cb ){
+		if( LLStringOps::isUpper(ca) ){ ca = LLStringOps::toLower(ca); }
+		if( LLStringOps::isUpper(cb) ){ cb = LLStringOps::toLower(cb); }
+		if( LLStringOps::isDigit(ca) ){
+			if( cnt-->0 ){
+				if( cb!=ca ) break;
+			}else{
+				if( !LLStringOps::isDigit(cb) ) break;
+				for(ai=0; LLStringOps::isDigit(a[ai]); ai++);
+				for(bi=0; LLStringOps::isDigit(b[bi]); bi++);
+				if( ai<bi ){ ca=0; break; }
+				if( bi<ai ){ cb=0; break; }
+				if( ca!=cb ) break;
+				cnt = ai;
+			}
+		}else if( ca!=cb ){   break;
+		}
+		ca = *(a++);
+		cb = *(b++);
+	}
+	return ca-cb;
+}
+
+// Puts compareDict() in a form appropriate for LL container classes to use for sorting.
+// static 
+template<class T> 
+BOOL LLStringUtilBase<T>::precedesDict( const std::basic_string<T>& a, const std::basic_string<T>& b )
+{
+	if( a.size() && b.size() )
+	{
+		return (LLStringUtilBase<T>::compareDict(a.c_str(), b.c_str()) < 0);
+	}
+	else
+	{
+		return (!b.empty());
+	}
+}
+
+//static
+template<class T> 
+void LLStringUtilBase<T>::toUpper(std::basic_string<T>& string)	
+{ 
+	if( !string.empty() )
+	{ 
+		std::transform(
+			string.begin(),
+			string.end(),
+			string.begin(),
+			(T(*)(T)) &LLStringOps::toUpper);
+	}
+}
+
+//static
+template<class T> 
+void LLStringUtilBase<T>::toLower(std::basic_string<T>& string)
+{ 
+	if( !string.empty() )
+	{ 
+		std::transform(
+			string.begin(),
+			string.end(),
+			string.begin(),
+			(T(*)(T)) &LLStringOps::toLower);
+	}
+}
+
+//static
+template<class T> 
+void LLStringUtilBase<T>::trimHead(std::basic_string<T>& string)
+{			
+	if( !string.empty() )
+	{
+		size_type i = 0;
+		while( i < string.length() && LLStringOps::isSpace( string[i] ) )
+		{
+			i++;
+		}
+		string.erase(0, i);
+	}
+}
+
+//static
+template<class T> 
+void LLStringUtilBase<T>::trimTail(std::basic_string<T>& string)
+{			
+	if( string.size() )
+	{
+		size_type len = string.length();
+		size_type i = len;
+		while( i > 0 && LLStringOps::isSpace( string[i-1] ) )
+		{
+			i--;
+		}
+
+		string.erase( i, len - i );
+	}
+}
+
+
+// Replace line feeds with carriage return-line feed pairs.
+//static
+template<class T>
+void LLStringUtilBase<T>::addCRLF(std::basic_string<T>& string)
+{
+	const T LF = 10;
+	const T CR = 13;
+
+	// Count the number of line feeds
+	size_type count = 0;
+	size_type len = string.size();
+	size_type i;
+	for( i = 0; i < len; i++ )
+	{
+		if( string[i] == LF )
+		{
+			count++;
+		}
+	}
+
+	// Insert a carriage return before each line feed
+	if( count )
+	{
+		size_type size = len + count;
+		T *t = new T[size];
+		size_type j = 0;
+		for( i = 0; i < len; ++i )
+		{
+			if( string[i] == LF )
+			{
+				t[j] = CR;
+				++j;
+			}
+			t[j] = string[i];
+			++j;
+		}
+
+		string.assign(t, size);
+	}
+}
+
+// Remove all carriage returns
+//static
+template<class T> 
+void LLStringUtilBase<T>::removeCRLF(std::basic_string<T>& string)
+{
+	const T CR = 13;
+
+	size_type cr_count = 0;
+	size_type len = string.size();
+	size_type i;
+	for( i = 0; i < len - cr_count; i++ )
+	{
+		if( string[i+cr_count] == CR )
+		{
+			cr_count++;
+		}
+
+		string[i] = string[i+cr_count];
+	}
+	string.erase(i, cr_count);
+}
+
+//static
+template<class T> 
+void LLStringUtilBase<T>::replaceChar( std::basic_string<T>& string, T target, T replacement )
+{
+	size_type found_pos = 0;
+	while( (found_pos = string.find(target, found_pos)) != std::basic_string<T>::npos ) 
+	{
+		string[found_pos] = replacement;
+		found_pos++; // avoid infinite defeat if target == replacement
+	}
+}
+
+//static
+template<class T> 
+void LLStringUtilBase<T>::replaceString( std::basic_string<T>& string, std::basic_string<T> target, std::basic_string<T> replacement )
+{
+	size_type found_pos = 0;
+	while( (found_pos = string.find(target, found_pos)) != std::basic_string<T>::npos )
+	{
+		string.replace( found_pos, target.length(), replacement );
+		found_pos += replacement.length(); // avoid infinite defeat if replacement contains target
+	}
+}
+
+//static
+template<class T> 
+void LLStringUtilBase<T>::replaceNonstandardASCII( std::basic_string<T>& string, T replacement )
+{
+	const char LF = 10;
+	const S8 MIN = 32;
+//	const S8 MAX = 127;
+
+	size_type len = string.size();
+	for( size_type i = 0; i < len; i++ )
+	{
+		// No need to test MAX < mText[i] because we treat mText[i] as a signed char,
+		// which has a max value of 127.
+		if( ( S8(string[i]) < MIN ) && (string[i] != LF) )
+		{
+			string[i] = replacement;
+		}
+	}
+}
+
+//static
+template<class T> 
+void LLStringUtilBase<T>::replaceTabsWithSpaces( std::basic_string<T>& str, size_type spaces_per_tab )
+{
+	const T TAB = '\t';
+	const T SPACE = ' ';
+
+	std::basic_string<T> out_str;
+	// Replace tabs with spaces
+	for (size_type i = 0; i < str.length(); i++)
+	{
+		if (str[i] == TAB)
+		{
+			for (size_type j = 0; j < spaces_per_tab; j++)
+				out_str += SPACE;
+		}
+		else
+		{
+			out_str += str[i];
+		}
+	}
+	str = out_str;
+}
+
+//static
+template<class T> 
+BOOL LLStringUtilBase<T>::containsNonprintable(const std::basic_string<T>& string)
+{
+	const char MIN = 32;
+	BOOL rv = FALSE;
+	for (size_type i = 0; i < string.size(); i++)
+	{
+		if(string[i] < MIN)
+		{
+			rv = TRUE;
+			break;
+		}
+	}
+	return rv;
+}
+
+//static
+template<class T> 
+void LLStringUtilBase<T>::stripNonprintable(std::basic_string<T>& string)
+{
+	const char MIN = 32;
+	size_type j = 0;
+	if (string.empty())
+	{
+		return;
+	}
+	size_t src_size = string.size();
+	char* c_string = new char[src_size + 1];
+	if(c_string == NULL)
+	{
+		return;
+	}
+	copy(c_string, string.c_str(), src_size+1);
+	char* write_head = &c_string[0];
+	for (size_type i = 0; i < src_size; i++)
+	{
+		char* read_head = &string[i];
+		write_head = &c_string[j];
+		if(!(*read_head < MIN))
+		{
+			*write_head = *read_head;
+			++j;
+		}
+	}
+	c_string[j]= '\0';
+	string = c_string;
+	delete []c_string;
+}
+
+template<class T> 
+void LLStringUtilBase<T>::_makeASCII(std::basic_string<T>& string)
+{
+	// Replace non-ASCII chars with LL_UNKNOWN_CHAR
+	for (size_type i = 0; i < string.length(); i++)
+	{
+		if (string[i] > 0x7f)
+		{
+			string[i] = LL_UNKNOWN_CHAR;
+		}
+	}
+}
+
+// static
+template<class T> 
+void LLStringUtilBase<T>::copy( T* dst, const T* src, size_type dst_size )
+{
+	if( dst_size > 0 )
+	{
+		size_type min_len = 0;
+		if( src )
+		{
+			min_len = llmin( dst_size - 1, strlen( src ) );  /* Flawfinder: ignore */
+			memcpy(dst, src, min_len * sizeof(T));		/* Flawfinder: ignore */
+		}
+		dst[min_len] = '\0';
+	}
+}
+
+// static
+template<class T> 
+void LLStringUtilBase<T>::copyInto(std::basic_string<T>& dst, const std::basic_string<T>& src, size_type offset)
+{
+	if ( offset == dst.length() )
+	{
+		// special case - append to end of string and avoid expensive
+		// (when strings are large) string manipulations
+		dst += src;
+	}
+	else
+	{
+		std::basic_string<T> tail = dst.substr(offset);
+
+		dst = dst.substr(0, offset);
+		dst += src;
+		dst += tail;
+	};
+}
+
+// True if this is the head of s.
+//static
+template<class T> 
+BOOL LLStringUtilBase<T>::isHead( const std::basic_string<T>& string, const T* s ) 
+{ 
+	if( string.empty() )
+	{
+		// Early exit
+		return FALSE;
+	}
+	else
+	{
+		return (strncmp( s, string.c_str(), string.size() ) == 0);
+	}
+}
+
+// static
+template<class T> 
+bool LLStringUtilBase<T>::startsWith(
+	const std::basic_string<T>& string,
+	const std::basic_string<T>& substr)
+{
+	if(string.empty() || (substr.empty())) return false;
+	if(0 == string.find(substr)) return true;
+	return false;
+}
+
+// static
+template<class T> 
+bool LLStringUtilBase<T>::endsWith(
+	const std::basic_string<T>& string,
+	const std::basic_string<T>& substr)
+{
+	if(string.empty() || (substr.empty())) return false;
+	std::string::size_type idx = string.rfind(substr);
+	if(std::string::npos == idx) return false;
+	return (idx == (string.size() - substr.size()));
+}
+
+
+template<class T> 
+BOOL LLStringUtilBase<T>::convertToBOOL(const std::basic_string<T>& string, BOOL& value)
+{
+	if( string.empty() )
+	{
+		return FALSE;
+	}
+
+	std::basic_string<T> temp( string );
+	trim(temp);
+	if( 
+		(temp == "1") || 
+		(temp == "T") || 
+		(temp == "t") || 
+		(temp == "TRUE") || 
+		(temp == "true") || 
+		(temp == "True") )
+	{
+		value = TRUE;
+		return TRUE;
+	}
+	else
+	if( 
+		(temp == "0") || 
+		(temp == "F") || 
+		(temp == "f") || 
+		(temp == "FALSE") || 
+		(temp == "false") || 
+		(temp == "False") )
+	{
+		value = FALSE;
+		return TRUE;
+	}
+
+	return FALSE;
+}
+
+template<class T> 
+BOOL LLStringUtilBase<T>::convertToU8(const std::basic_string<T>& string, U8& value) 
+{
+	S32 value32 = 0;
+	BOOL success = convertToS32(string, value32);
+	if( success && (U8_MIN <= value32) && (value32 <= U8_MAX) )
+	{
+		value = (U8) value32;
+		return TRUE;
+	}
+	return FALSE;
+}
+
+template<class T> 
+BOOL LLStringUtilBase<T>::convertToS8(const std::basic_string<T>& string, S8& value) 
+{
+	S32 value32 = 0;
+	BOOL success = convertToS32(string, value32);
+	if( success && (S8_MIN <= value32) && (value32 <= S8_MAX) )
+	{
+		value = (S8) value32;
+		return TRUE;
+	}
+	return FALSE;
+}
+
+template<class T> 
+BOOL LLStringUtilBase<T>::convertToS16(const std::basic_string<T>& string, S16& value) 
+{
+	S32 value32 = 0;
+	BOOL success = convertToS32(string, value32);
+	if( success && (S16_MIN <= value32) && (value32 <= S16_MAX) )
+	{
+		value = (S16) value32;
+		return TRUE;
+	}
+	return FALSE;
+}
+
+template<class T> 
+BOOL LLStringUtilBase<T>::convertToU16(const std::basic_string<T>& string, U16& value) 
+{
+	S32 value32 = 0;
+	BOOL success = convertToS32(string, value32);
+	if( success && (U16_MIN <= value32) && (value32 <= U16_MAX) )
+	{
+		value = (U16) value32;
+		return TRUE;
+	}
+	return FALSE;
+}
+
+template<class T> 
+BOOL LLStringUtilBase<T>::convertToU32(const std::basic_string<T>& string, U32& value) 
+{
+	if( string.empty() )
+	{
+		return FALSE;
+	}
+
+	std::basic_string<T> temp( string );
+	trim(temp);
+	U32 v;
+	std::basic_istringstream<T> i_stream((std::basic_string<T>)temp);
+	if(i_stream >> v)
+	{
+		value = v;
+		return TRUE;
+	}
+	return FALSE;
+}
+
+template<class T> 
+BOOL LLStringUtilBase<T>::convertToS32(const std::basic_string<T>& string, S32& value) 
+{
+	if( string.empty() )
+	{
+		return FALSE;
+	}
+
+	std::basic_string<T> temp( string );
+	trim(temp);
+	S32 v;
+	std::basic_istringstream<T> i_stream((std::basic_string<T>)temp);
+	if(i_stream >> v)
+	{
+		//TODO: figure out overflow and underflow reporting here
+		//if((LONG_MAX == v) || (LONG_MIN == v))
+		//{
+		//	// Underflow or overflow
+		//	return FALSE;
+		//}
+
+		value = v;
+		return TRUE;
+	}
+	return FALSE;
+}
+
+template<class T> 
+BOOL LLStringUtilBase<T>::convertToF32(const std::basic_string<T>& string, F32& value) 
+{
+	F64 value64 = 0.0;
+	BOOL success = convertToF64(string, value64);
+	if( success && (-F32_MAX <= value64) && (value64 <= F32_MAX) )
+	{
+		value = (F32) value64;
+		return TRUE;
+	}
+	return FALSE;
+}
+
+template<class T> 
+BOOL LLStringUtilBase<T>::convertToF64(const std::basic_string<T>& string, F64& value)
+{
+	if( string.empty() )
+	{
+		return FALSE;
+	}
+
+	std::basic_string<T> temp( string );
+	trim(temp);
+	F64 v;
+	std::basic_istringstream<T> i_stream((std::basic_string<T>)temp);
+	if(i_stream >> v)
+	{
+		//TODO: figure out overflow and underflow reporting here
+		//if( ((-HUGE_VAL == v) || (HUGE_VAL == v))) )
+		//{
+		//	// Underflow or overflow
+		//	return FALSE;
+		//}
+
+		value = v;
+		return TRUE;
+	}
+	return FALSE;
+}
+
+template<class T> 
+void LLStringUtilBase<T>::truncate(std::basic_string<T>& string, size_type count)
+{
+	size_type cur_size = string.size();
+	string.resize(count < cur_size ? count : cur_size);
+}
+
+#endif  // LL_STRING_H