KJS::UString Class Reference

#include <ustring.h>

Classes
struct	Rep

Public Types
enum	Empty { empty }

Public Member Functions
	UString ()
	UString (char c)
	UString (const char *c)
	UString (const char *c, size_t length)
KJS_EXTERNAL_EXPORT	UString (const DOM::DOMString &)
KJS_EXTERNAL_EXPORT	UString (const QString &)
	UString (const UChar *c, int length)
	UString (const UString &, const UString &)
	UString (const UString &s)
	UString (const Vector< UChar > &buffer)
	UString (Empty)
	UString (PassRefPtr< Rep > r)
	UString (UChar *c, int length, bool copy)
	~UString ()
UString &	append (char c)
UString &	append (const char *t)
UString &	append (const char *t, int tSize)
UString &	append (const UString &subStr, int subPos, int subLength=-1)
UString &	append (const UString &t)
UString &	append (UChar c)
UString &	append (unsigned short)
char *	ascii () const
void	copyForWriting ()
size_t	cost () const
CString	cstring () const
const UChar *	data () const
KJS_EXTERNAL_EXPORT DOM::DOMString	domString () const
int	find (const UString &f, int pos=0) const
int	find (UChar, int pos=0) const
bool	is8Bit () const
bool	isEmpty () const
bool	isNull () const
UString &	operator+= (const char *s)
UString &	operator+= (const UString &s)
UString &	operator= (const char *c)
UString &	operator= (const UString &s)
UString &	operator= (Empty)
const UChar	operator[] (int pos) const
KJS_EXTERNAL_EXPORT QConstString	qconststring () const
KJS_EXTERNAL_EXPORT QString	qstring () const
Rep *	rep () const
int	rfind (const UString &f, int pos) const
int	rfind (UChar, int pos) const
int	size () const
UString	spliceSubstringsWithSeparators (const Range *substringRanges, int rangeCount, const UString *separators, int separatorCount) const
UString	substr (int pos=0, int len=-1) const
unsigned	toArrayIndex (bool *ok=nullptr) const
double	toDouble () const
double	toDouble (bool tolerateTrailingJunk) const
double	toDouble (bool tolerateTrailingJunk, bool tolerateEmptyString) const
uint32_t	toStrictUInt32 (bool *ok=nullptr) const
CString	UTF8String () const

Static Public Member Functions
static bool	equal (const UString::Rep *a, const UString::Rep *b)
static UString	from (double d)
static UString	from (int i)
static UString	from (long u)
static UString	from (unsigned int u)
static size_t	maxUChars ()
static const UString &	null ()

Detailed Description

Unicode string class.

Definition at line 153 of file ustring.h.

Member Enumeration Documentation

Empty

enum KJS::UString::Empty

Constructs an empty string.

Definition at line 237 of file ustring.h.

Constructor & Destructor Documentation

UString() [1/9]

KJS_EXPORT KJS::UString::UString ( )

inline

Constructs a null string.

Definition at line 545 of file ustring.h.

UString() [2/9]

KJS::UString::UString ( char  c )

explicit

Constructs a string from the single character c.

Definition at line 414 of file ustring.cpp.

UString() [3/9]

KJS::UString::UString

(

const char *

c

)

Constructs a string from a classical zero determined char string.

Definition at line 420 of file ustring.cpp.

UString() [4/9]

KJS::UString::UString	(	const UChar *	c,
		int	length
	)

Constructs a string from an array of Unicode characters of the specified length.

Definition at line 467 of file ustring.cpp.

UString() [5/9]

KJS::UString::UString	(	UChar *	c,
		int	length,
		bool	copy
	)

If copy is false the string data will be adopted.

That means that the data will NOT be copied and the pointer will be deleted when the UString object is modified or destroyed. Behaviour defaults to a deep copy if copy is true.

Definition at line 476 of file ustring.cpp.

UString() [6/9]

KJS::UString::UString ( const UString &  s )

inline

Copy constructor.

Makes a shallow copy only.

Definition at line 263 of file ustring.h.

UString() [7/9]

KJS_EXTERNAL_EXPORT KJS::UString::UString

(

const QString &

)

Convenience declaration only ! You'll be on your own to write the implementation for a construction from QString.

Note: feel free to contact me if you want to see a dummy header for your favorite FooString class here !

UString() [8/9]

KJS_EXTERNAL_EXPORT KJS::UString::UString

(

const DOM::DOMString &

)

Convenience declaration only ! See UString(const QString&).

UString() [9/9]

KJS::UString::UString	(	const UString &	a,
		const UString &	b
	)

Concatenation constructor.

Makes operator+ more efficient.

Definition at line 496 of file ustring.cpp.

~UString()

KJS::UString::~UString ( )

inline

Destructor.

Definition at line 288 of file ustring.h.

Member Function Documentation

append()

UString & KJS::UString::append	(	const UString &	subStr,
		int	subPos,
		int	subLength = -1
	)

Append another string.

Definition at line 761 of file ustring.cpp.

ascii()

char * KJS::UString::ascii

(

)

const

Convert the Unicode string to plain ASCII chars chopping of any higher bytes.

This method should only be used for debugging purposes as it is neither Unicode safe nor free from side effects. In order not to waste any memory the char buffer is static and shared by all UString instances.

Definition at line 934 of file ustring.cpp.

cstring()

CString KJS::UString::cstring

(

)

const

Returns

The string converted to the 8-bit string type CString().

Definition at line 929 of file ustring.cpp.

data()

const UChar* KJS::UString::data ( ) const

inline

Returns

A pointer to the internal Unicode data.

Definition at line 391 of file ustring.h.

domString()

KJS_EXTERNAL_EXPORT DOM::DOMString KJS::UString::domString

(

)

const

See also

UString(const QString&).

find()

int KJS::UString::find	(	const UString &	f,
		int	pos = 0
	)		const

Returns

Position of first occurrence of f starting at position pos. -1 if the search was not successful.

Definition at line 1188 of file ustring.cpp.

from() [1/4]

UString KJS::UString::from ( double  d )

static

Constructs a string from a double.

Definition at line 637 of file ustring.cpp.

from() [2/4]

UString KJS::UString::from ( int  i )

static

Constructs a string from an int.

Definition at line 559 of file ustring.cpp.

from() [3/4]

UString KJS::UString::from ( long  u )

static

Constructs a string from a long int.

Definition at line 607 of file ustring.cpp.

from() [4/4]

UString KJS::UString::from ( unsigned int  u )

static

Constructs a string from an unsigned int.

Definition at line 589 of file ustring.cpp.

is8Bit()

bool KJS::UString::is8Bit

(

)

const

Use this if you want to make sure that this string is a plain ASCII string.

For example, if you don't want to lose any information when using cstring() or ascii().

Returns

True if the string doesn't contain any non-ASCII characters.

Definition at line 1006 of file ustring.cpp.

isEmpty()

bool KJS::UString::isEmpty ( ) const

inline

Returns

True if null or zero length.

Definition at line 405 of file ustring.h.

isNull()

bool KJS::UString::isNull ( ) const

inline

Returns

True if null.

Definition at line 398 of file ustring.h.

maxUChars()

size_t KJS::UString::maxUChars ( )

static

Maximum permitted string length.

Since

5.20

Definition at line 1299 of file ustring.cpp.

null()

const UString & KJS::UString::null ( )

static

Static instance of a null string.

Definition at line 553 of file ustring.cpp.

operator+=()

UString& KJS::UString::operator+= ( const UString &  s )

inline

Appends the specified string.

Definition at line 379 of file ustring.h.

operator=()

UString & KJS::UString::operator=

(

const char *

c

)

Assignment operator.

Definition at line 969 of file ustring.cpp.

operator[]()

const UChar KJS::UString::operator[]

(

int

pos

)

const

Const character at specified position.

Definition at line 1020 of file ustring.cpp.

qconststring()

KJS_EXTERNAL_EXPORT QConstString KJS::UString::qconststring

(

)

const

See also

UString(const QString&).

qstring()

KJS_EXTERNAL_EXPORT QString KJS::UString::qstring

(

)

const

See also

UString(const QString&).

rfind()

int KJS::UString::rfind	(	const UString &	f,
		int	pos
	)		const

Returns

Position of first occurrence of f searching backwards from position pos. -1 if the search was not successful.

Definition at line 1230 of file ustring.cpp.

size()

int KJS::UString::size ( ) const

inline

Returns

The length of the string.

Definition at line 420 of file ustring.h.

substr()

UString KJS::UString::substr	(	int	pos = 0,
		int	len = -1
	)		const

Returns

The sub string starting at position pos and length len.

Definition at line 1276 of file ustring.cpp.

toArrayIndex()

unsigned KJS::UString::toArrayIndex ( bool *  ok = nullptr ) const

inline

Attempts an conversion to an array index.

The "ok" boolean will be set to true if it is a valid array index according to the rule from ECMA 15.2 about what an array index is. It must exactly match the string form of an unsigned integer, and be less than 2^32 - 1.

Definition at line 552 of file ustring.h.

toDouble()

double KJS::UString::toDouble	(	bool	tolerateTrailingJunk,
		bool	tolerateEmptyString
	)		const

Attempts an conversion to a number.

Apart from floating point numbers, the algorithm will recognize hexadecimal representations (as indicated by a 0x or 0X prefix) and +/- Infinity. Returns NaN if the conversion failed.

Parameters

tolerateTrailingJunk	if true, toDouble can tolerate garbage after the number.
tolerateEmptyString	if false, toDouble will turn an empty string into NaN rather than 0.

Definition at line 1028 of file ustring.cpp.

toStrictUInt32()

uint32_t KJS::UString::toStrictUInt32

(

bool *

ok = nullptr

)

const

Attempts an conversion to a 32-bit integer.

ok will be set according to the success.

Definition at line 1131 of file ustring.cpp.

UTF8String()

CString KJS::UString::UTF8String

(

)

const

Convert the string to UTF-8, assuming it is UTF-16 encoded.

Since this function is tolerant of badly formed UTF-16, it can create UTF-8 strings that are invalid because they have characters in the range U+D800-U+DDFF, U+FFFE, or U+FFFF, but the UTF-8 string is guaranteed to be otherwise valid.

Definition at line 1531 of file ustring.cpp.

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The documentation for this class was generated from the following files:

• ustring.h
• ustring.cpp