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-rw-r--r--indra/llcommon/llstring.h2600
1 files changed, 1300 insertions, 1300 deletions
diff --git a/indra/llcommon/llstring.h b/indra/llcommon/llstring.h
index 31e70e0fe4..edbb007f61 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
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