added: to methods Toull(), Toll(), Toul(), Toui(), Tol(), Toi()

a new parameter: bool allow_skip_whitechars default true
added:   new methods: Toull_b(), Toll_b(), Toul_b(), Toui_b(), Tol_b(), Toi_b()
         automatically detects the base (radix):
           4323 - base 10
           0122 - base 8  (string starts with 0)
           #fff - base 16 (string starts with #)
           &101 - base 2  (string starts with &)
added:   CharType * SkipWhiteFromBack(CharType * str, bool check_additional_chars = true, bool treat_new_line_as_white = true)
         skipping white characters from the end of a string
changed: Toll_b(), Toull_b(), Tol_b() and Toul_b() are used in Space now
         for methods ToInt() etc so we are able to use a different base now
changed: some work in Space (const correctness)
       




git-svn-id: svn://ttmath.org/publicrep/pikotools/trunk@1070 e52654a7-88a9-db11-a3e9-0013d4bc506e
This commit is contained in:
Tomasz Sowa 2018-01-05 20:03:11 +00:00
parent e24112b79b
commit cb23304885
4 changed files with 325 additions and 130 deletions

View File

@ -50,14 +50,16 @@ namespace PT
template<typename CharType>
unsigned long long Toull(const CharType * str, int base = 10, const CharType ** after_str = 0, bool * was_overflow = 0)
unsigned long long Toull(const CharType * str, int base = 10, const CharType ** after_str = 0, bool * was_overflow = 0, bool allow_skip_whitechars = true)
{
unsigned long long res = 0;
bool carry = false;
int digit;
SetOverflow(was_overflow, false);
str = SkipWhite(str);
if( allow_skip_whitechars )
str = SkipWhite(str);
while( !carry && IsDigit(*str, base, &digit) )
{
@ -78,9 +80,12 @@ unsigned long long Toull(const CharType * str, int base = 10, const CharType **
if( carry )
{
while( IsDigit(*str, base, &digit) )
if( after_str )
{
str += 1;
while( IsDigit(*str, base, &digit) )
{
str += 1;
}
}
SetOverflow(was_overflow, true);
@ -95,13 +100,15 @@ unsigned long long Toull(const CharType * str, int base = 10, const CharType **
template<typename CharType>
long long Toll(const CharType * str, int base = 10, const CharType ** after_str = 0, bool * was_overflow = 0)
long long Toll(const CharType * str, int base = 10, const CharType ** after_str = 0, bool * was_overflow = 0, bool allow_skip_whitechars = true)
{
bool was_sign = false;
bool was_overflow_u = false;
SetOverflow(was_overflow, false);
str = SkipWhite(str);
if( allow_skip_whitechars )
str = SkipWhite(str);
if( *str == '-' )
{
@ -109,9 +116,7 @@ long long Toll(const CharType * str, int base = 10, const CharType ** after_str
str += 1;
}
// we do not trim spaces between a sign and a digit
unsigned long long uval = Toull(str, base, after_str, &was_overflow_u);
unsigned long long uval = Toull(str, base, after_str, &was_overflow_u, false);
unsigned long long sign_add = ( was_sign ) ? 1 : 0;
if( was_overflow_u )
@ -136,13 +141,14 @@ long long Toll(const CharType * str, int base = 10, const CharType ** after_str
template<typename CharType, typename IntegerType>
IntegerType ToUnsignedIntegerType(const CharType * str, int base = 10, const CharType ** after_str = 0, bool * was_overflow = 0)
IntegerType ToUnsignedIntegerType(const CharType * str, int base = 10, const CharType ** after_str = 0, bool * was_overflow = 0, bool allow_skip_whitechars = true)
{
bool was_overflow_ll = false;
SetOverflow(was_overflow, false);
unsigned long long val = Toull(str, base, after_str, &was_overflow_ll);
unsigned long long val = Toull(str, base, after_str, &was_overflow_ll, allow_skip_whitechars);
if( was_overflow_ll || val > static_cast<unsigned long long>(std::numeric_limits<IntegerType>::max()) )
{
@ -155,15 +161,15 @@ IntegerType ToUnsignedIntegerType(const CharType * str, int base = 10, const Cha
template<class CharType>
unsigned long Toul(const CharType * str, int base = 10, const CharType ** after_str = 0, bool * was_overflow = 0)
unsigned long Toul(const CharType * str, int base = 10, const CharType ** after_str = 0, bool * was_overflow = 0, bool allow_skip_whitechars = true)
{
return ToUnsignedIntegerType<CharType, unsigned long>(str, base, after_str, was_overflow);
return ToUnsignedIntegerType<CharType, unsigned long>(str, base, after_str, was_overflow, allow_skip_whitechars);
}
template<class CharType>
unsigned int Toui(const CharType * str, int base = 10, const CharType ** after_str = 0, bool * was_overflow = 0)
unsigned int Toui(const CharType * str, int base = 10, const CharType ** after_str = 0, bool * was_overflow = 0, bool allow_skip_whitechars = true)
{
return ToUnsignedIntegerType<CharType, unsigned int>(str, base, after_str, was_overflow);
return ToUnsignedIntegerType<CharType, unsigned int>(str, base, after_str, was_overflow, allow_skip_whitechars);
}
@ -171,12 +177,12 @@ unsigned int Toui(const CharType * str, int base = 10, const CharType ** after_s
template<typename CharType, typename IntegerType>
IntegerType ToIntegerType(const CharType * str, int base = 10, const CharType ** after_str = 0, bool * was_overflow = 0)
IntegerType ToIntegerType(const CharType * str, int base = 10, const CharType ** after_str = 0, bool * was_overflow = 0, bool allow_skip_whitechars = true)
{
bool was_overflow_ll = false;
SetOverflow(was_overflow, false);
long long val = Toll(str, base, after_str, &was_overflow_ll);
long long val = Toll(str, base, after_str, &was_overflow_ll, allow_skip_whitechars);
if( was_overflow_ll ||
val < static_cast<long long>(std::numeric_limits<IntegerType>::min()) ||
@ -192,19 +198,180 @@ IntegerType ToIntegerType(const CharType * str, int base = 10, const CharType **
template<class CharType>
long Tol(const CharType * str, int base = 10, const CharType ** after_str = 0, bool * was_overflow = 0)
long Tol(const CharType * str, int base = 10, const CharType ** after_str = 0, bool * was_overflow = 0, bool allow_skip_whitechars = true)
{
return ToIntegerType<CharType, long>(str, base, after_str, was_overflow);
return ToIntegerType<CharType, long>(str, base, after_str, was_overflow, allow_skip_whitechars);
}
template<class CharType>
int Toi(const CharType * str, int base = 10, const CharType ** after_str = 0, bool * was_overflow = 0)
int Toi(const CharType * str, int base = 10, const CharType ** after_str = 0, bool * was_overflow = 0, bool allow_skip_whitechars = true)
{
return ToIntegerType<CharType, int>(str, base, after_str, was_overflow);
return ToIntegerType<CharType, int>(str, base, after_str, was_overflow, allow_skip_whitechars);
}
/*
*
* the base will be automatically detected
*
* (first digit is [1-9]) - base 10
* 0 - 8
* # - 16
* & - 2
*
*/
template<typename CharType>
unsigned long long Toull_b(const CharType * str, const CharType ** after_str = 0, bool * was_overflow = 0, bool allow_skip_whitechars = true)
{
if( allow_skip_whitechars )
str = SkipWhite(str);
int base = 10;
if( *str == '0' )
{
base = 8;
str += 1;
}
else
if( *str == '#' )
{
base = 16;
str += 1;
}
else
if( *str == '&' )
{
base = 2;
str += 1;
}
return Toull(str, base, after_str, was_overflow, false);
}
template<typename CharType>
long long Toll_b(const CharType * str, const CharType ** after_str = 0, bool * was_overflow = 0, bool allow_skip_whitechars = true)
{
bool was_sign = false;
bool was_overflow_u = false;
SetOverflow(was_overflow, false);
if( allow_skip_whitechars )
str = SkipWhite(str);
if( *str == '-' )
{
was_sign = true;
str += 1;
}
unsigned long long uval = Toull_b(str, after_str, &was_overflow_u, false);
unsigned long long sign_add = ( was_sign ) ? 1 : 0;
if( was_overflow_u )
{
SetOverflow(was_overflow, true);
return 0;
}
if( uval > static_cast<unsigned long long>(std::numeric_limits<long long>::max()) + sign_add )
{
SetOverflow(was_overflow, true);
return 0;
}
if( was_sign )
{
return static_cast<long long>(0) - static_cast<long long>(uval);
}
return static_cast<long long>(uval);
}
template<typename CharType, typename IntegerType>
IntegerType ToUnsignedIntegerType_b(const CharType * str, const CharType ** after_str = 0, bool * was_overflow = 0, bool allow_skip_whitechars = true)
{
bool was_overflow_ll = false;
SetOverflow(was_overflow, false);
unsigned long long val = Toull_b(str, after_str, &was_overflow_ll, allow_skip_whitechars);
if( was_overflow_ll || val > static_cast<unsigned long long>(std::numeric_limits<IntegerType>::max()) )
{
SetOverflow(was_overflow, true);
return 0;
}
return static_cast<IntegerType>(val);
}
template<class CharType>
unsigned long Toul_b(const CharType * str, const CharType ** after_str = 0, bool * was_overflow = 0, bool allow_skip_whitechars = true)
{
return ToUnsignedIntegerType_b<CharType, unsigned long>(str, after_str, was_overflow, allow_skip_whitechars);
}
template<class CharType>
unsigned int Toui_b(const CharType * str, const CharType ** after_str = 0, bool * was_overflow = 0, bool allow_skip_whitechars = true)
{
return ToUnsignedIntegerType_b<CharType, unsigned int>(str, after_str, was_overflow, allow_skip_whitechars);
}
template<typename CharType, typename IntegerType>
IntegerType ToIntegerType_b(const CharType * str, const CharType ** after_str = 0, bool * was_overflow = 0, bool allow_skip_whitechars = true)
{
bool was_overflow_ll = false;
SetOverflow(was_overflow, false);
long long val = Toll_b(str, after_str, &was_overflow_ll, allow_skip_whitechars);
if( was_overflow_ll ||
val < static_cast<long long>(std::numeric_limits<IntegerType>::min()) ||
val > static_cast<long long>(std::numeric_limits<IntegerType>::max()) )
{
SetOverflow(was_overflow, true);
return 0;
}
return static_cast<IntegerType>(val);
}
template<class CharType>
long Tol_b(const CharType * str, const CharType ** after_str = 0, bool * was_overflow = 0, bool allow_skip_whitechars = true)
{
return ToIntegerType_b<CharType, long>(str, after_str, was_overflow, allow_skip_whitechars);
}
template<class CharType>
int Toi_b(const CharType * str, const CharType ** after_str = 0, bool * was_overflow = 0, bool allow_skip_whitechars = true)
{
return ToIntegerType_b<CharType, int>(str, after_str, was_overflow, allow_skip_whitechars);
}
}

View File

@ -61,6 +61,38 @@ CharType * SkipWhite(CharType * str, bool check_additional_chars = true, bool tr
}
/*
*
* str_end is pointing at the end of the string (the last item + one)
*
* return value is a pointer to the first white character after a non-white character at the end
* or to the last+one if there is no any white characters
*
*/
template<class CharType>
CharType * SkipWhiteFromBack(CharType * str_begin, CharType * str_end, bool check_additional_chars = true, bool treat_new_line_as_white = true)
{
while( str_end > str_begin && IsWhite(static_cast<wchar_t>(*(str_end-1)), check_additional_chars, treat_new_line_as_white) )
{
str_end -= 1;
}
return str_end;
}
template<class CharType>
CharType * SkipWhiteFromBack(CharType * str, bool check_additional_chars = true, bool treat_new_line_as_white = true)
{
CharType * str_begin = str;
while( *str != 0 )
{
str += 1;
}
return SkipWhiteFromBack(str_begin, str, check_additional_chars, treat_new_line_as_white);
}
}

View File

@ -50,7 +50,7 @@ namespace PT
Space::Space()
{
parent = 0;
parent = nullptr;
}
@ -116,7 +116,7 @@ Space::Value * Space::GetValue(const std::wstring & name)
if( t == table.end() )
{
return 0;
return nullptr;
}
else
{
@ -138,7 +138,7 @@ const Space::Value * Space::GetValue(const std::wstring & name) const
if( t == table.cend() )
{
return 0;
return nullptr;
}
else
{
@ -164,7 +164,7 @@ std::wstring * Space::GetFirstValue(const std::wstring & name)
if( t == table.end() || t->second.empty() )
{
return 0;
return nullptr;
}
else
{
@ -187,7 +187,7 @@ const std::wstring * Space::GetFirstValue(const std::wstring & name) const
if( t == table.end() || t->second.empty() )
{
return 0;
return nullptr;
}
else
{
@ -403,72 +403,36 @@ std::string Space::TextA(const std::wstring & name, const std::wstring & def) co
int Space::CheckIntegerBase(const std::wstring & value, const wchar_t ** save_ptr)
{
const wchar_t * ptr = SkipWhite(value.c_str());
int base = 10;
if( *ptr == '0' )
{
base = 8;
ptr += 1; // we can skip the first zero
}
else
if( *ptr == '-' && *(ptr+1) == '0' )
{
base = 8;
// ptr is pointing to '-', do not increment it here
}
*save_ptr = ptr;
return base;
}
unsigned int Space::ToUInt(const std::wstring & value)
{
const wchar_t * ptr;
int base = CheckIntegerBase(value, &ptr);
return Toui(ptr, base);
return Toui_b(value.c_str());
}
int Space::ToInt(const std::wstring & value)
{
const wchar_t * ptr;
int base = CheckIntegerBase(value, &ptr);
return Toi(ptr, base);
return Toi_b(value.c_str());
}
unsigned long Space::ToULong(const std::wstring & value)
{
const wchar_t * ptr;
int base = CheckIntegerBase(value, &ptr);
return Toul(ptr, base);
return Toul_b(value.c_str());
}
long Space::ToLong(const std::wstring & value)
{
const wchar_t * ptr;
int base = CheckIntegerBase(value, &ptr);
return Tol(ptr, base);
return Tol_b(value.c_str());
}
unsigned long long Space::ToULongLong(const std::wstring & value)
{
const wchar_t * ptr;
int base = CheckIntegerBase(value, &ptr);
return Toull(ptr, base);
return Toull_b(value.c_str());
}
long long Space::ToLongLong(const std::wstring & value)
{
const wchar_t * ptr;
int base = CheckIntegerBase(value, &ptr);
return Toll(ptr, base);
return Toll_b(value.c_str());
}
@ -486,10 +450,12 @@ size_t Space::ToSize(const std::wstring & value)
bool Space::ToBool(const std::wstring & value)
{
// IMPROVE ME add support for trimming white chars?
return (EqualNoCase(value.c_str(), L"true") ||
EqualNoCase(value.c_str(), L"yes") ||
EqualNoCase(value.c_str(), L"1")
const wchar_t * str_begin = SkipWhite(value.c_str());
const wchar_t * str_end = SkipWhiteFromBack(str_begin);
return (EqualNoCase(str_begin, str_end, L"true") ||
EqualNoCase(str_begin, str_end, L"yes") ||
EqualNoCase(str_begin, str_end, L"1")
);
}
@ -498,7 +464,7 @@ bool Space::ToBool(const std::wstring & value)
int Space::Int(const wchar_t * name, int def)
int Space::Int(const wchar_t * name, int def) const
{
tmp_name = name;
return Int(tmp_name, def);
@ -507,9 +473,9 @@ int Space::Int(const wchar_t * name, int def)
int Space::Int(const std::wstring & name, int def)
int Space::Int(const std::wstring & name, int def) const
{
std::wstring * value = GetFirstValue(name);
const std::wstring * value = GetFirstValue(name);
if( value )
return ToInt(*value);
@ -519,16 +485,16 @@ return def;
unsigned int Space::UInt(const wchar_t * name, unsigned int def)
unsigned int Space::UInt(const wchar_t * name, unsigned int def) const
{
tmp_name = name;
return UInt(tmp_name, def);
}
unsigned int Space::UInt(const std::wstring & name, unsigned int def)
unsigned int Space::UInt(const std::wstring & name, unsigned int def) const
{
std::wstring * value = GetFirstValue(name);
const std::wstring * value = GetFirstValue(name);
if( value )
return ToUInt(*value);
@ -540,16 +506,16 @@ return def;
long Space::Long(const wchar_t * name, long def)
long Space::Long(const wchar_t * name, long def) const
{
tmp_name = name;
return Long(tmp_name, def);
}
long Space::Long(const std::wstring & name, long def)
long Space::Long(const std::wstring & name, long def) const
{
std::wstring * value = GetFirstValue(name);
const std::wstring * value = GetFirstValue(name);
if( value )
return ToLong(*value);
@ -558,16 +524,16 @@ return def;
}
unsigned long Space::ULong(const wchar_t * name, unsigned long def)
unsigned long Space::ULong(const wchar_t * name, unsigned long def) const
{
tmp_name = name;
return ULong(tmp_name, def);
}
unsigned long Space::ULong(const std::wstring & name, unsigned long def)
unsigned long Space::ULong(const std::wstring & name, unsigned long def) const
{
std::wstring * value = GetFirstValue(name);
const std::wstring * value = GetFirstValue(name);
if( value )
return ToULong(*value);
@ -577,15 +543,15 @@ return def;
long long Space::LongLong(const wchar_t * name, long long def)
long long Space::LongLong(const wchar_t * name, long long def) const
{
tmp_name = name;
return LongLong(tmp_name, def);
}
long long Space::LongLong(const std::wstring & name, long long def)
long long Space::LongLong(const std::wstring & name, long long def) const
{
std::wstring * value = GetFirstValue(name);
const std::wstring * value = GetFirstValue(name);
if( value )
return ToLongLong(*value);
@ -593,15 +559,15 @@ long long Space::LongLong(const std::wstring & name, long long def)
return def;
}
unsigned long long Space::ULongLong(const wchar_t * name, unsigned long long def)
unsigned long long Space::ULongLong(const wchar_t * name, unsigned long long def) const
{
tmp_name = name;
return ULongLong(tmp_name, def);
}
unsigned long long Space::ULongLong(const std::wstring & name, unsigned long long def)
unsigned long long Space::ULongLong(const std::wstring & name, unsigned long long def) const
{
std::wstring * value = GetFirstValue(name);
const std::wstring * value = GetFirstValue(name);
if( value )
return ToULongLong(*value);
@ -613,16 +579,16 @@ return def;
size_t Space::Size(const wchar_t * name, size_t def)
size_t Space::Size(const wchar_t * name, size_t def) const
{
tmp_name = name;
return Size(tmp_name, def);
}
size_t Space::Size(const std::wstring & name, size_t def)
size_t Space::Size(const std::wstring & name, size_t def) const
{
std::wstring * value = GetFirstValue(name);
const std::wstring * value = GetFirstValue(name);
if( value )
return ToSize(*value);
@ -633,7 +599,7 @@ return def;
bool Space::Bool(const wchar_t * name, bool def)
bool Space::Bool(const wchar_t * name, bool def) const
{
tmp_name = name;
return Bool(tmp_name, def);
@ -641,9 +607,9 @@ bool Space::Bool(const wchar_t * name, bool def)
bool Space::Bool(const std::wstring & name, bool def)
bool Space::Bool(const std::wstring & name, bool def) const
{
std::wstring * value = GetFirstValue(name);
const std::wstring * value = GetFirstValue(name);
if( value )
return ToBool(*value);
@ -928,7 +894,7 @@ Space * Space::FindSpace(const wchar_t * name)
return spaces[i];
}
return 0;
return nullptr;
}
@ -940,7 +906,7 @@ Space * Space::FindSpace(const std::wstring & name)
return spaces[i];
}
return 0;
return nullptr;
}
@ -1042,6 +1008,8 @@ return c;
}
// IMPROVE ME
// move me to a better place
bool Space::EqualNoCase(const wchar_t * str1, const wchar_t * str2)
{
while( *str1 && *str2 && ToSmall(*str1) == ToSmall(*str2) )
@ -1057,6 +1025,29 @@ return false;
}
/*
*
* the first string is trimmed
* str1_end is pointing one character after the last valid character
*
*/
// IMPROVE ME
// move me to a better place
bool Space::EqualNoCase(const wchar_t * str1_begin, const wchar_t * str1_end, const wchar_t * str2)
{
while( str1_begin < str1_end && *str2 && ToSmall(*str1_begin) == ToSmall(*str2) )
{
++str1_begin;
++str2;
}
if( str1_begin == str1_end && *str2 == 0 )
return true;
return false;
}
/*
those white characters here should be the same as in spaceparser.cpp
*/

View File

@ -206,7 +206,12 @@ public:
*
*/
// moze tu powinno być FindValue?
/*
*
* their working in O(log)
* can return a null pointer
*
*/
Value * GetValue(const wchar_t * name);
Value * GetValue(const std::wstring & name);
@ -214,7 +219,6 @@ public:
const Value * GetValue(const std::wstring & name) const;
// moze tu powinno być FindFirstValue?
// they can return a null pointer if there is not such a 'name'
std::wstring * GetFirstValue(const wchar_t * name);
std::wstring * GetFirstValue(const std::wstring & name);
@ -260,26 +264,26 @@ public:
int Int(const wchar_t * name, int def = 0);
int Int(const std::wstring & name, int def = 0);
unsigned int UInt(const wchar_t * name, unsigned int def = 0);
unsigned int UInt(const std::wstring & name, unsigned int def = 0);
int Int(const wchar_t * name, int def = 0) const;
int Int(const std::wstring & name, int def = 0) const;
unsigned int UInt(const wchar_t * name, unsigned int def = 0) const;
unsigned int UInt(const std::wstring & name, unsigned int def = 0) const;
long Long(const wchar_t * name, long def = 0);
long Long(const std::wstring & name, long def = 0);
unsigned long ULong(const wchar_t * name, unsigned long def = 0);
unsigned long ULong(const std::wstring & name, unsigned long def = 0);
long Long(const wchar_t * name, long def = 0) const;
long Long(const std::wstring & name, long def = 0) const;
unsigned long ULong(const wchar_t * name, unsigned long def = 0) const;
unsigned long ULong(const std::wstring & name, unsigned long def = 0) const;
long long LongLong(const wchar_t * name, long long def = 0);
long long LongLong(const std::wstring & name, long long def = 0);
unsigned long long ULongLong(const wchar_t * name, unsigned long long def = 0);
unsigned long long ULongLong(const std::wstring & name, unsigned long long def = 0);
long long LongLong(const wchar_t * name, long long def = 0) const;
long long LongLong(const std::wstring & name, long long def = 0) const;
unsigned long long ULongLong(const wchar_t * name, unsigned long long def = 0) const;
unsigned long long ULongLong(const std::wstring & name, unsigned long long def = 0) const;
size_t Size(const wchar_t * name, size_t def = 0);
size_t Size(const std::wstring & name, size_t def = 0);
size_t Size(const wchar_t * name, size_t def = 0) const;
size_t Size(const std::wstring & name, size_t def = 0) const;
bool Bool(const wchar_t * name, bool def = false);
bool Bool(const std::wstring & name, bool def = false);
bool Bool(const wchar_t * name, bool def = false) const;
bool Bool(const std::wstring & name, bool def = false) const;
@ -393,21 +397,20 @@ private:
std::wstring tmp_value_text;
std::string tmp_value_text_ascii;
int CheckIntegerBase(const std::wstring & value, const wchar_t ** save_ptr);
static unsigned int ToUInt(const std::wstring & value);
static int ToInt(const std::wstring & value);
static unsigned long ToULong(const std::wstring & value);
static long ToLong(const std::wstring & value);
static unsigned long long ToULongLong(const std::wstring & value);
static long long ToLongLong(const std::wstring & value);
static size_t ToSize(const std::wstring & value);
static bool ToBool(const std::wstring & value);
unsigned int ToUInt(const std::wstring & value);
int ToInt(const std::wstring & value);
unsigned long ToULong(const std::wstring & value);
long ToLong(const std::wstring & value);
unsigned long long ToULongLong(const std::wstring & value);
long long ToLongLong(const std::wstring & value);
size_t ToSize(const std::wstring & value);
bool ToBool(const std::wstring & value);
wchar_t ToSmall(wchar_t c);
bool EqualNoCase(const wchar_t * str1, const wchar_t * str2);
static bool IsWhite(int c);
static bool HasWhite(const std::wstring & str);
static wchar_t ToSmall(wchar_t c);
static bool EqualNoCase(const wchar_t * str1, const wchar_t * str2);
static bool EqualNoCase(const wchar_t * str1_begin, const wchar_t * str1_end, const wchar_t * str2);
static bool IsWhite(int c);
static bool HasWhite(const std::wstring & str);
};
@ -459,6 +462,8 @@ void Space::PrintKey(Stream & out, const std::wstring & str)
{
bool use_quote = false;
// CHECK ME
// HasWhite doesn't take a new line into account, is it correct to use it here?
if( str.empty() || HasWhite(str) )
use_quote = true;