DtString Class Reference

Instances of DtString are used to represent strings. More...

Inheritance diagram for DtString:

Collaboration diagram for DtString:

Public Member Functions
	DtString ()
	default constructor, creates an empty string
	DtString (const char *str)
	additional constructors
	DtString (const char *str, int length)
	fixed length string constructor
virtual	~DtString ()
	destructor
	DtString (const DtString &orig)
	copy constructor
virtual	operator const char * () const
	cast operator
DtString *	clone () const
	clone operator
virtual void	tokenize (const char delimiter, std::vector< DtString > &tokens) const
	Tokenize the string baseed on the input character.
virtual int	toInt (bool *ok=0) const
	Conversion to integer, if ok is provided ok is set if conversion succeeds.
virtual unsigned int	toUInt (bool *ok=0) const
	Conversion to unsigned integer, if ok is provided ok is set if conversion succeeds.
virtual float	toFloat (bool *ok=0) const
	Convert to floating point.
virtual double	toDouble (bool *ok=0) const
	Convert to double precision floating point.
virtual bool	toBoolean (bool *ok=0) const
	Convert to double precision floating point.
virtual void	toUpper ()
	Convert this string's alphabetic characters to uppercase.
virtual void	toLower ()
	Convert this string's alphabetic characters to lowercase.
virtual int	findChar (const char ch)
	Search the string for first occurrence of a character and return its index.
virtual int	findLastChar (const char ch)
	Search the string for the last occurrence of a character and return its index.
virtual int	findString (const DtString &string) const
	Search the string for the first occurrence of another string and return the starting index.
virtual int	findLastString (const DtString &string)
	Search the string for the last occurrence of another string and return the starting index.
bool	snipFrontToLast (const char ch)
bool	snipBackToFirst (const char ch)
virtual int	count (const char ch) const
	Returns the number of occurrences of the character.
virtual int	length () const
	length() - Exactly the same as size():
virtual int	size () const
	size() - returns the length of the string not including the terminating '\0'
const char *	string () const
	string() - Returns a char * representation of the DtString: deprecated
const char *	c_str () const
	Returns a char* representation of the DtString;.
bool	isEmpty () const
	returns true if the string is empty, where empty is size() == 0
	DtString (double val)
	Constructors for creating DtString representations of numbers.
	DtString (int val)
	Constructors for creating DtString representations of numbers.
	DtString (long val)
	Constructors for creating DtString representations of numbers.
	DtString (char val)
	Constructors for creating DtString representations of numbers.
	DtString (unsigned int val)
	Constructors for creating DtString representations of numbers.
	DtString (unsigned long val)
	Constructors for creating DtString representations of numbers.
DtString &	operator= (const DtString &orig)
	assignment operators
DtString &	operator= (const char *orig)
	assignment operators
virtual bool	caseCompare (const DtString &str) const
	Case-insensitive string compare.
virtual bool	caseCompare (const char *str) const
	Case-insensitive string compare.
virtual const char &	operator[] (int index) const
	index operator
virtual char &	operator[] (int index)
	index operator
virtual bool	snipFront (const char ch, bool toLastCh=false)
	Truncates everything before or after the character, including the character, respectively.
virtual bool	snipBack (const char ch, bool fromFirstCh=false)
	Truncates everything before or after the character, including the character, respectively.
virtual bool	chompFront ()
	Remove all whitespace at front or back of a string.
virtual bool	chompBack ()
	Remove all whitespace at front or back of a string.

Static Public Member Functions
static const DtString &	nullString ()
	a Null representation of a string, which is the same as an empty string

Protected Types
enum	{ theDefaultBufferSize = 64 }

Protected Member Functions
void	clear ()
	Deletes the string, and sets the myString pointer to NULL.
void	setString (const char *str)
	Set/Get for myString - char pointer that holds the string.

Protected Attributes
char	myDefaultBuffer [theDefaultBufferSize]
char *	myString
	Use this buffer if possible.
bool	myStringAlloced
	&myDefaultBuffer[0], or a ptr to heap memory if needed
unsigned int	myBufSize
	Does myString need to be deleted when done?

Static Protected Attributes
static const int	theMaxInsertionStringSize
	current buffer size

Friends
std::ostream &	operator<< (std::ostream &os, const DtString &str)
std::istream &	operator>> (std::istream &is, DtString &str)
bool	operator== (const DtString &str1, const DtString &str2)
	comparison operators
bool	operator< (const DtString &str1, const DtString &str2)
	comparison operators
bool	operator<= (const DtString &str1, const DtString &str2)
	comparison operators
bool	operator> (const DtString &str1, const DtString &str2)
	comparison operators
bool	operator>= (const DtString &str1, const DtString &str2)
	comparison operators
bool	operator!= (const DtString &str1, const DtString &str2)
	comparison operators
virtual bool	operator== (const char *str) const
	comparison operators
virtual bool	operator< (const char *str) const
	comparison operators
virtual bool	operator<= (const char *str) const
	comparison operators
virtual bool	operator> (const char *str) const
	comparison operators
virtual bool	operator>= (const char *str) const
	comparison operators
virtual bool	operator!= (const char *str) const
	comparison operators
DtString	operator+ (const DtString &str1, const DtString &str2)
	concatenation operators
DtString	operator+ (const char *str1, const DtString &str2)
	concatenation operators
virtual DtString	operator+ (const char *str) const
	concatenation operators
virtual DtString &	operator+= (const char *str)
	concatenation operators
virtual DtString &	operator+= (const DtString &str)
	concatenation operators

Detailed Description

Instances of DtString are used to represent strings.

DtString is a robust string implementation which allows the developer to easily manipulate strings quickly.

Member Enumeration Documentation

anonymous enum

protected

Enumerator:

theDefaultBufferSize

Constructor & Destructor Documentation

DtString::DtString

(

)

default constructor, creates an empty string

DtString::DtString

(

const char *

str

)

additional constructors

DtString::DtString	(	const char *	str,
		int	length
	)

fixed length string constructor

DtString::DtString

(

double

val

)

Constructors for creating DtString representations of numbers.

For example, These constructors allow you to write statements such as DtString msg = DtString("The value is ") + DtString(5) + DtString("\n"); Above, msg.string() is "The value is 5\n";

DtString::DtString

(

int

val

)

Constructors for creating DtString representations of numbers.

For example, These constructors allow you to write statements such as DtString msg = DtString("The value is ") + DtString(5) + DtString("\n"); Above, msg.string() is "The value is 5\n";

DtString::DtString

(

long

val

)

Constructors for creating DtString representations of numbers.

For example, These constructors allow you to write statements such as DtString msg = DtString("The value is ") + DtString(5) + DtString("\n"); Above, msg.string() is "The value is 5\n";

DtString::DtString

(

char

val

)

Constructors for creating DtString representations of numbers.

For example, These constructors allow you to write statements such as DtString msg = DtString("The value is ") + DtString(5) + DtString("\n"); Above, msg.string() is "The value is 5\n";

DtString::DtString

(

unsigned int

val

)

Constructors for creating DtString representations of numbers.

For example, These constructors allow you to write statements such as DtString msg = DtString("The value is ") + DtString(5) + DtString("\n"); Above, msg.string() is "The value is 5\n";

DtString::DtString

(

unsigned long

val

)

Constructors for creating DtString representations of numbers.

For example, These constructors allow you to write statements such as DtString msg = DtString("The value is ") + DtString(5) + DtString("\n"); Above, msg.string() is "The value is 5\n";

virtual DtString::~DtString ( )

virtual

destructor

DtString::DtString

(

const DtString &

orig

)

copy constructor

Member Function Documentation

const char* DtString::c_str

(

)

const

Returns a char* representation of the DtString;.

Referenced by DtToWString(), DtF18EntityEncoder::encodeSpecialF18Attribute(), MakeCCompatibleString(), DtEntityStateRepository::markingText(), DtInterClassDesc::name(), DtObjClassDesc::name(), and DtMtlEnvironment::registerConfigVar().

virtual bool DtString::caseCompare ( const DtString &  str ) const

virtual

Case-insensitive string compare.

Returns true if the strings are equal except for differences in case.

virtual bool DtString::caseCompare ( const char *  str ) const

virtual

Case-insensitive string compare.

Returns true if the strings are equal except for differences in case.

virtual bool DtString::chompBack ( )

virtual

Remove all whitespace at front or back of a string.

virtual bool DtString::chompFront ( )

virtual

Remove all whitespace at front or back of a string.

void DtString::clear ( )

protected

Deletes the string, and sets the myString pointer to NULL.

Non-virtual, because only called by destructor, and non-virtual members. myString is set to NULL, so it should be allocated some memory if operators are to be used on the string.

DtString* DtString::clone

(

)

const

clone operator

virtual int DtString::count ( const char  ch ) const

virtual

Returns the number of occurrences of the character.

virtual int DtString::findChar ( const char  ch )

virtual

Search the string for first occurrence of a character and return its index.

Return values

-1	if the character was not found.

virtual int DtString::findLastChar ( const char  ch )

virtual

Search the string for the last occurrence of a character and return its index.

Return values

-1	if the character was not found.

virtual int DtString::findLastString ( const DtString &  string )

virtual

Search the string for the last occurrence of another string and return the starting index.

Return values

-1	if the character was not found.

virtual int DtString::findString ( const DtString &  string ) const

virtual

Search the string for the first occurrence of another string and return the starting index.

Return values

-1	if the character was not found.

bool DtString::isEmpty ( ) const

inline

returns true if the string is empty, where empty is size() == 0

virtual int DtString::length ( ) const

virtual

length() - Exactly the same as size():

Deprecated:

Use DtString::size()

Referenced by MakeCCompatibleString().

static const DtString& DtString::nullString ( )

static

a Null representation of a string, which is the same as an empty string

virtual DtString::operator const char * ( ) const

virtual

cast operator

virtual bool DtString::operator!= ( const char *  str ) const

virtual

comparison operators

virtual DtString DtString::operator+ ( const char *  str ) const

virtual

concatenation operators

virtual DtString& DtString::operator+= ( const char *  str )

virtual

concatenation operators

virtual DtString& DtString::operator+= ( const DtString &  str )

virtual

concatenation operators

virtual bool DtString::operator< ( const char *  str ) const

virtual

comparison operators

virtual bool DtString::operator<= ( const char *  str ) const

virtual

comparison operators

DtString& DtString::operator=

(

const DtString &

orig

)

assignment operators

Reimplemented in DtFilename.

DtString& DtString::operator=

(

const char *

orig

)

assignment operators

Reimplemented in DtFilename.

virtual bool DtString::operator== ( const char *  str ) const

virtual

comparison operators

virtual bool DtString::operator> ( const char *  str ) const

virtual

comparison operators

virtual bool DtString::operator>= ( const char *  str ) const

virtual

comparison operators

virtual const char& DtString::operator[] ( int  index ) const

virtual

index operator

virtual char& DtString::operator[] ( int  index )

virtual

index operator

void DtString::setString ( const char *  str )

protected

Set/Get for myString - char pointer that holds the string.

Non-virtual, because only called by constructor.

virtual int DtString::size ( ) const

virtual

size() - returns the length of the string not including the terminating '\0'

Referenced by DtF18EntityEncoder::encodeSpecialF18Attribute().

virtual bool DtString::snipBack ( const char  ch, bool  fromFirstCh = false  )

virtual

Truncates everything before or after the character, including the character, respectively.

Normally, snipFront stops at the first occurrence of "ch", and snipBack stops at the last occurrence of "ch". The second argument flags reverse this. Return value is true if "ch" was found in the string. Does not include the null terminator (only searches characters counted by size).

bool DtString::snipBackToFirst ( const char  ch )

inline

virtual bool DtString::snipFront ( const char  ch, bool  toLastCh = false  )

virtual

Truncates everything before or after the character, including the character, respectively.

Normally, snipFront stops at the first occurrence of "ch", and snipBack stops at the last occurrence of "ch". The second argument flags reverse this. Return value is true if "ch" was found in the string. Does not include the null terminator (only searches characters counted by size).

bool DtString::snipFrontToLast ( const char  ch )

inline

const char* DtString::string

(

)

const

string() - Returns a char * representation of the DtString: deprecated

Deprecated:

Use DtString::c_str().

Referenced by MakeCCompatibleString().

virtual bool DtString::toBoolean ( bool *  ok = 0 ) const

virtual

Convert to double precision floating point.

If ok is provided ok is set if conversion succeeds.

Return values

0	if unable to convert.

virtual double DtString::toDouble ( bool *  ok = 0 ) const

virtual

Convert to double precision floating point.

If ok is provided ok is set if conversion succeeds.

Return values

0	if unable to convert.

virtual float DtString::toFloat ( bool *  ok = 0 ) const

virtual

Convert to floating point.

If ok is provided ok is set if conversion succeeds.

Return values

0	if unable to convert.

virtual int DtString::toInt ( bool *  ok = 0 ) const

virtual

Conversion to integer, if ok is provided ok is set if conversion succeeds.

Return values

0	if unable to convert.

virtual void DtString::tokenize ( const char  delimiter, std::vector< DtString > &  tokens  ) const

virtual

Tokenize the string baseed on the input character.

Disregards trailing delimiter.

virtual void DtString::toLower ( )

virtual

Convert this string's alphabetic characters to lowercase.

Referenced by DtToLower().

virtual unsigned int DtString::toUInt ( bool *  ok = 0 ) const

virtual

Conversion to unsigned integer, if ok is provided ok is set if conversion succeeds.

Return values

0	if unable to convert.

virtual void DtString::toUpper ( )

virtual

Convert this string's alphabetic characters to uppercase.

Referenced by DtToUpper().

Friends And Related Function Documentation

bool operator!= ( const DtString &  str1, const DtString &  str2  )

friend

comparison operators

DtString operator+ ( const DtString &  str1, const DtString &  str2  )

friend

concatenation operators

DtString operator+ ( const char *  str1, const DtString &  str2  )

friend

concatenation operators

bool operator< ( const DtString &  str1, const DtString &  str2  )

friend

comparison operators

std::ostream& operator<< ( std::ostream &  os, const DtString &  str  )

friend

bool operator<= ( const DtString &  str1, const DtString &  str2  )

friend

comparison operators

bool operator== ( const DtString &  str1, const DtString &  str2  )

friend

comparison operators

bool operator> ( const DtString &  str1, const DtString &  str2  )

friend

comparison operators

bool operator>= ( const DtString &  str1, const DtString &  str2  )

friend

comparison operators

std::istream& operator>> ( std::istream &  is, DtString &  str  )

friend

Member Data Documentation

unsigned int DtString::myBufSize

protected

Does myString need to be deleted when done?

char DtString::myDefaultBuffer[theDefaultBufferSize]

protected

char* DtString::myString

protected

Use this buffer if possible.

bool DtString::myStringAlloced

protected

&myDefaultBuffer[0], or a ptr to heap memory if needed

(for large strings)

const int DtString::theMaxInsertionStringSize

staticprotected

current buffer size

---

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

• vlString.h