Methods of Class OString

OString

OString() throw();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	NO	NO	NO	NO	YES	NO

Summary: New string containing no characters.

OString

OString(

const OString &

str ) throw();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	NO	NO	NO	NO	YES	NO

Summary

New string from OString.

Parameters

str	a OString.

OString

OString(

rtl_String *

str ) throw();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	NO	NO	NO	NO	YES	NO

Summary

New string from OString data.

Parameters

str	a OString data.

OString

explicit OString(

sal_Char

value ) throw();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	NO	NO	NO	NO	YES	NO

Summary

New string from a single character.

Parameters

value

a character.

OString

OString(

const sal_Char *

value ) throw();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	NO	NO	NO	NO	YES	NO

Summary

New string from a character buffer array.

Parameters

value

a NULL-terminated character array.

OString

OString(

const sal_Char *	value,
sal_Int32	length ) throw();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	NO	NO	NO	NO	YES	NO

Summary

New string from a character buffer array.

Parameters

value	a character array.
length	the number of character which should be copied. The character array length must be greater or equal than this value.

OString

OString(

const sal_Unicode *	value,
sal_Int32	length,
rtl_TextEncoding	encoding,
sal_uInt32	convertFlags = OUSTRING_TO_OSTRING_CVTFLAGS );

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	NO	NO	NO	NO	YES	NO

Summary

New string from a Unicode character buffer array.

Parameters

value	a Unicode character array.
length	the number of character which should be converted. The Unicode character array length must be greater or equal than this value.
encoding	the text encoding in which the Unicode character sequence should be converted.
convertFlags	flags which controls the conversion. see RTL_UNICODETOTEXT_FLAGS_...

~OString

~OString() throw();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	NO	NO	NO	NO	YES	NO

Summary: Release the string data.

operator=

OString & operator=(

const OString &

str ) throw();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	NO	NO	NO	NO	YES	NO

Summary

Assign a new string.

Parameters

str	a OString.

operator+=

OString & operator+=(

const OString &

str ) throw();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	NO	NO	NO	NO	YES	NO

Summary

Append a string to this string.

Parameters

str	a OString.

getLength

sal_Int32 getLength() throw();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	NO	NO	NO	NO	YES	NO

Summary: Returns the length of this string.
Description: The length is equal to the number of characters in this string.
Return: the length of the sequence of characters represented by this object.

operator const sal_Char *

operator const sal_Char *() throw();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	NO	NO	NO	NO	YES	NO

Summary: Returns a pointer to the characters of this string.
Description: The returned pointer is not guaranteed to point to a null-terminated byte string. Note that this string object may contain embedded null characters, which will thus also be embedded in the returned byte string.
Return: a pointer to a (not necessarily null-terminated) byte string representing the characters of this string object.

getStr

const sal_Char * getStr() throw();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	NO	NO	NO	NO	YES	NO

Summary: Returns a pointer to the characters of this string.
Description: The returned pointer is guaranteed to point to a null-terminated byte string. But note that this string object may contain embedded null characters, which will thus also be embedded in the returned null-terminated byte string.
Return: a pointer to a null-terminated byte string representing the characters of this string object.

compareTo

sal_Int32 compareTo(

const OString &

str ) const throw();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	YES	NO	NO	NO	YES	NO

Summary

Compares two strings.

Description

The comparison is based on the numeric value of each character in the strings and return a value indicating their relationship. This function can't be used for language specific sorting.

Parameters

str	the object to be compared.

Return

0 - if both strings are equal < 0 - if this string is less than the string argument > 0 - if this string is greater than the string argument

compareTo

sal_Int32 compareTo(

const OString &	rObj,
sal_Int32	maxLength ) const throw();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	YES	NO	NO	NO	YES	NO

Summary

Compares two strings with an maximum count of characters.

Description

The comparison is based on the numeric value of each character in the strings and return a value indicating their relationship. This function can't be used for language specific sorting.

Parameters

str	the object to be compared.
maxLength	the maximum count of characters to be compared.

Return

0 - if both strings are equal < 0 - if this string is less than the string argument > 0 - if this string is greater than the string argument

reverseCompareTo

sal_Int32 reverseCompareTo(

const OString &

str ) const throw();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	YES	NO	NO	NO	YES	NO

Summary

Compares two strings in reverse order.

Description

The comparison is based on the numeric value of each character in the strings and return a value indicating their relationship. This function can't be used for language specific sorting.

Parameters

str	the object to be compared.

Return

0 - if both strings are equal < 0 - if this string is less than the string argument > 0 - if this string is greater than the string argument

equals

sal_Bool equals(

const OString &

str ) const throw();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	YES	NO	NO	NO	YES	NO

Summary

Perform a comparison of two strings.

Description

The result is true if and only if second string represents the same sequence of characters as the first string. This function can't be used for language specific comparison.

Parameters

str	the object to be compared.

Return

sal_True if the strings are equal; sal_False, otherwise.

equalsIgnoreAsciiCase

sal_Bool equalsIgnoreAsciiCase(

const OString &

str ) const throw();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	YES	NO	NO	NO	YES	NO

Summary

Perform a ASCII lowercase comparison of two strings.

Description

The result is true if and only if second string represents the same sequence of characters as the first string, ignoring the case. Character values between 65 and 90 (ASCII A-Z) are interpreted as values between 97 and 122 (ASCII a-z). This function can't be used for language specific comparison.

Parameters

str	the object to be compared.

Return

sal_True if the strings are equal; sal_False, otherwise.

match

sal_Bool match(

const OString &	str,
sal_Int32	fromIndex = 0 ) const throw();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	YES	NO	NO	NO	YES	NO

Summary

Match against a substring appearing in this string.

Description

The result is true if and only if the second string appears as a substring of this string, at the given position. This function can't be used for language specific comparison.

Parameters

str	the object (substring) to be compared.
fromIndex	the index to start the comparion from. The index must be greater or equal than 0 and less or equal as the string length.

Return

sal_True if str match with the characters in the string at the given position; sal_False, otherwise.

matchIgnoreAsciiCase

sal_Bool matchIgnoreAsciiCase(

const OString &	str,
sal_Int32	fromIndex = 0 ) const throw();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	YES	NO	NO	NO	YES	NO

Summary

Match against a substring appearing in this string, ignoring the case of ASCII letters.

Description

The result is true if and only if the second string appears as a substring of this string, at the given position. Character values between 65 and 90 (ASCII A-Z) are interpreted as values between 97 and 122 (ASCII a-z). This function can't be used for language specific comparison.

Parameters

str	the object (substring) to be compared.
fromIndex	the index to start the comparion from. The index must be greater or equal than 0 and less or equal as the string length.

Return

sal_True if str match with the characters in the string at the given position; sal_False, otherwise.

hashCode

sal_Int32 hashCode() throw();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	NO	NO	NO	NO	YES	NO

Summary: Returns a hashcode for this string.
Return: a hash code value for this object.
See Also: rtl::OStringHash
for
convenient
use
of
STLPort's
hash_map

indexOf

sal_Int32 indexOf(

sal_Char	ch,
sal_Int32	fromIndex = 0 ) const throw();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	YES	NO	NO	NO	YES	NO

Summary

Returns the index within this string of the first occurrence of the specified character, starting the search at the specified index.

Parameters

ch	character to be located.
fromIndex	the index to start the search from. The index must be greater or equal than 0 and less or equal as the string length.

Return

the index of the first occurrence of the character in the character sequence represented by this string that is greater than or equal to fromIndex, or -1 if the character does not occur.

lastIndexOf

sal_Int32 lastIndexOf(

sal_Char

ch ) const throw();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	YES	NO	NO	NO	YES	NO

Summary

Returns the index within this string of the last occurrence of the specified character, searching backward starting at the end.

Parameters

ch	character to be located.

Return

the index of the last occurrence of the character in the character sequence represented by this string, or -1 if the character does not occur.

lastIndexOf

sal_Int32 lastIndexOf(

sal_Char	ch,
sal_Int32	fromIndex ) const throw();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	YES	NO	NO	NO	YES	NO

Description

Returns the index within this string of the last occurrence of the specified character, searching backward starting before the specified index.

Parameters

ch	character to be located.
fromIndex	the index before which to start the search.

Return

the index of the last occurrence of the character in the character sequence represented by this string that is less than fromIndex, or -1 if the character does not occur before that point.

indexOf

sal_Int32 indexOf(

const OString &	str,
sal_Int32	fromIndex = 0 ) const throw();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	YES	NO	NO	NO	YES	NO

Summary

Returns the index within this string of the first occurrence of the specified substring, starting at the specified index.

Description

If str doesn't include any character, always -1 is returned. This is also the case, if both strings are empty.

Parameters

str	the substring to search for.
fromIndex	the index to start the search from.

Return

If the string argument occurs one or more times as a substring within this string at the starting index, then the index of the first character of the first such substring is returned. If it does not occur as a substring starting at fromIndex or beyond, -1 is returned.

lastIndexOf

sal_Int32 lastIndexOf(

const OString &

str ) const throw();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	YES	NO	NO	NO	YES	NO

Summary

Returns the index within this string of the last occurrence of the specified substring, searching backward starting at the end.

Description

The returned index indicates the starting index of the substring in this string. If str doesn't include any character, always -1 is returned. This is also the case, if both strings are empty.

Parameters

str	the substring to search for.

Return

If the string argument occurs one or more times as a substring within this string, then the index of the first character of the last such substring is returned. If it does not occur as a substring, -1 is returned.

lastIndexOf

sal_Int32 lastIndexOf(

const OString &	str,
sal_Int32	fromIndex ) const throw();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	YES	NO	NO	NO	YES	NO

Description

Returns the index within this string of the last occurrence of the specified substring, searching backward starting before the specified index. The returned index indicates the starting index of the substring in this string. If str doesn't include any character, always -1 is returned. This is also the case, if both strings are empty.

Parameters

str	the substring to search for.
fromIndex	the index before which to start the search.

Return

If the string argument occurs one or more times as a substring within this string before the starting index, then the index of the first character of the last such substring is returned. Otherwise, -1 is returned.

copy

OString copy(

sal_Int32

beginIndex ) const throw();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	YES	NO	NO	NO	YES	NO

Summary

Returns a new string that is a substring of this string.

Description

The substring begins at the specified beginIndex. It is an error for beginIndex to be negative or to be greater than the length of this string.

Parameters

beginIndex

the beginning index, inclusive.

Return

the specified substring.

copy

OString copy(

sal_Int32	beginIndex,
sal_Int32	count ) const throw();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	YES	NO	NO	NO	YES	NO

Summary

Returns a new string that is a substring of this string.

Description

The substring begins at the specified beginIndex and contains count characters. It is an error for either beginIndex or count to be negative, or for beginIndex + count to be greater than the length of this string.

Parameters

beginIndex	the beginning index, inclusive.
count	the number of characters.

Return

the specified substring.

concat

OString concat(

const OString &

str ) const throw();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	YES	NO	NO	NO	YES	NO

Summary

Concatenates the specified string to the end of this string.

Parameters

str	the string that is concatenated to the end of this string.

Return

a string that represents the concatenation of this string followed by the string argument.

replaceAt

OString replaceAt(

sal_Int32	index,
sal_Int32	count,
const OString &	newStr ) const throw();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	YES	NO	NO	NO	YES	NO

Summary

Returns a new string resulting from replacing n = count characters from position index in this string with newStr.

Parameters

index

the replacing index in str.
                The index must be greater or equal as 0 and
                less or equal as the length of the string.

count

the count of charcters that will replaced
                The count must be greater or equal as 0 and
                less or equal as the length of the string minus index.

newStr

the new substring.

Return

the new string.

replace

OString replace(

sal_Char	oldChar,
sal_Char	newChar ) const throw();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	YES	NO	NO	NO	YES	NO

Summary

Returns a new string resulting from replacing all occurrences of oldChar in this string with newChar.

Description

If the character oldChar does not occur in the character sequence represented by this object, then the string is assigned with str.

Parameters

oldChar	the old character.
newChar	the new character.

Return

a string derived from this string by replacing every occurrence of oldChar with newChar.

toAsciiLowerCase

OString toAsciiLowerCase() throw();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	NO	NO	NO	NO	YES	NO

Summary: Converts from this string all ASCII uppercase characters (65-90) to ASCII lowercase characters (97-122).
Description: This function can't be used for language specific conversion. If the string doesn't contain characters which must be converted, then the new string is assigned with str.
Return: the string, converted to ASCII lowercase.

toAsciiUpperCase

OString toAsciiUpperCase() throw();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	NO	NO	NO	NO	YES	NO

Summary: Converts from this string all ASCII lowercase characters (97-122) to ASCII uppercase characters (65-90).
Description: This function can't be used for language specific conversion. If the string doesn't contain characters which must be converted, then the new string is assigned with str.
Return: the string, converted to ASCII uppercase.

trim

OString trim() throw();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	NO	NO	NO	NO	YES	NO

Summary: Returns a new string resulting from removing white space from both ends of the string.
Description: All characters that have codes less than or equal to 32 (the space character) are considered to be white space. If the string doesn't contain white spaces at both ends, then the new string is assigned with str.
Return: the string, with white space removed from the front and end.

getToken

OString getToken(

sal_Int32	token,
sal_Char	cTok,
sal_Int32 &	index ) const throw();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	YES	NO	NO	NO	YES	NO

Summary

Returns a token in the string.

Description

Example: sal_Int32 nIndex = 0; do { ... OString aToken = aStr.getToken( 0, ';', nIndex ); ... } while ( nIndex >= 0 );

Parameters

token

the number of the token to return.

cTok

the character which seperate the tokens.

index

the position at which the token is searched in the
                            string.
                            The index must not be greater thanthe length of the
                            string.
                            This param is set to the position of the
                            next token or to -1, if it is the last token.

Return

the token; if either token or index is negative, an empty token is returned (and index is set to -1)

toBoolean

sal_Bool toBoolean() throw();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	NO	NO	NO	NO	YES	NO

Summary: Returns the Boolean value from this string.
Description: This function can't be used for language specific conversion.
Return: sal_True, if the string is 1 or "True" in any ASCII case. sal_False in any other case.

toChar

sal_Char toChar() throw();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	NO	NO	NO	NO	YES	NO

Summary: Returns the first character from this string.
Return: the first character from this string or 0, if this string is emptry.

toInt32

sal_Int32 toInt32(

sal_Int16

radix = 10 ) const throw();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	YES	NO	NO	NO	YES	NO

Summary

Returns the int32 value from this string.

Description

This function can't be used for language specific conversion.

Parameters

radix

the radix (between 2 and 36)

Return

the int32 represented from this string. 0 if this string represents no number.

toInt64

sal_Int64 toInt64(

sal_Int16

radix = 10 ) const throw();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	YES	NO	NO	NO	YES	NO

Summary

Returns the int64 value from this string.

Description

This function can't be used for language specific conversion.

Parameters

radix

the radix (between 2 and 36)

Return

the int64 represented from this string. 0 if this string represents no number.

toFloat

float toFloat() throw();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	NO	NO	NO	NO	YES	NO

Summary: Returns the float value from this string.
Description: This function can't be used for language specific conversion.
Return: the float represented from this string. 0.0 if this string represents no number.

toDouble

double toDouble() throw();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	NO	NO	NO	NO	YES	NO

Summary: Returns the double value from this string.
Description: This function can't be used for language specific conversion.
Return: the double represented from this string. 0.0 if this string represents no number.

valueOf

static OString valueOf(

sal_Bool

b ) throw();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	NO	NO	NO	YES	YES	NO

Summary

Returns the string representation of the sal_Bool argument.

Description

If the sal_Bool is true, the string "true" is returned. If the sal_Bool is false, the string "false" is returned. This function can't be used for language specific conversion.

Parameters

b	a sal_Bool.

Return

a string with the string representation of the argument.

valueOf

static OString valueOf(

sal_Char

c ) throw();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	NO	NO	NO	YES	YES	NO

Summary

Returns the string representation of the char argument.

Parameters

c	a character.

Return

a string with the string representation of the argument.

valueOf

static OString valueOf(

sal_Int32	i,
sal_Int16	radix = 10 ) throw();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	NO	NO	NO	YES	YES	NO

Summary

Returns the string representation of the int argument.

Description

This function can't be used for language specific conversion.

Parameters

i	a int32.
radix	the radix (between 2 and 36)

Return

a string with the string representation of the argument.

valueOf

static OString valueOf(

sal_Int64	ll,
sal_Int16	radix = 10 ) throw();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	NO	NO	NO	YES	YES	NO

Summary

Returns the string representation of the long argument.

Description

This function can't be used for language specific conversion.

Parameters

ll	a int64.
radix	the radix (between 2 and 36)

Return

a string with the string representation of the argument.

valueOf

static OString valueOf(

float

f ) throw();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	NO	NO	NO	YES	YES	NO

Summary

Returns the string representation of the float argument.

Description

This function can't be used for language specific conversion.

Parameters

f

a float.

Return

a string with the string representation of the argument.

valueOf

static OString valueOf(

double

d ) throw();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	NO	NO	NO	YES	YES	NO

Summary

Returns the string representation of the double argument.

Description

This function can't be used for language specific conversion.

Parameters

d

a double.

Return

a string with the string representation of the argument.

API

SDK

Tips ‘n’ Tricks

Miscellaneous

Methods of Class OString