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    nsAString (External)

    Class Declaration

    This header provides wrapper classes around the frozen string API
which are roughly equivalent to the internal string classes.

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    Method Overview

    BeginReading
    EndReading
    CharAt
    operator[]
    First
    BeginWriting
    EndWriting
    SetLength
    Length
    IsEmpty
    SetIsVoid
    IsVoid
    Assign
    AssignLiteral
    operator=
    Replace
    Append
    AppendLiteral
    operator+=
    Insert
    Cut
    Truncate
    StripChars
    StripWhitespace
    Trim
    DefaultComparator
    Compare
    Equals
    operator<
    operator<=
    operator==
    operator>=
    operator>
    operator!=
    EqualsLiteral
    LowerCaseEqualsLiteral
    Find
    RFind
    FindChar
    RFindChar
    AppendInt
    ToInteger

    Data Members

    No public members.

    Methods

    BeginReading

    PRUint32 BeginReading(const PRUnichar**, const PRUnichar**) const - source
    Returns the length, beginning, and end of a string in one operation.

    Parameters

    • PRUnichar** begin
    • PRUnichar** end
    PRUnichar* BeginReading() const - source

    EndReading

    PRUnichar* EndReading() const - source

    CharAt

    PRUnichar CharAt(PRUint32) const - source

    Parameters

    • PRUint32 aPos

    operator[]

    PRUnichar operator[](PRUint32) const - source

    Parameters

    • PRUint32 aPos

    First

    PRUnichar First() const - source

    BeginWriting

    PRUint32 BeginWriting(PRUnichar**, PRUnichar**, PRUint32) - source
    Get the length, begin writing, and optionally set the length of a
string all in one operation.

@param   newSize Size the string to this length. Pass PR_UINT32_MAX
to leave the length unchanged.
@return  The new length of the string, or 0 if resizing failed.

    Parameters

    • PRUnichar** begin
    • PRUnichar** end
    • PRUint32 newSize
    PRUnichar* BeginWriting(PRUint32) - source

    Parameters

    • PRUint32 <anonymous>

    EndWriting

    PRUnichar* EndWriting() - source

    SetLength

    PRBool SetLength(PRUint32) - source

    Parameters

    • PRUint32 aLen

    Length

    PRUint32 Length() const - source

    IsEmpty

    PRBool IsEmpty() const - source

    SetIsVoid

    void SetIsVoid(PRBool) - source

    Parameters

    • PRBool val

    IsVoid

    PRBool IsVoid() const - source

    Assign

    void Assign(const nsAString&) - source

    Parameters

    • nsAString& aString
    void Assign(const PRUnichar*, PRUint32) - source

    Parameters

    • PRUnichar* aData
    • PRUint32 aLength
    void Assign(PRUnichar) - source

    Parameters

    • PRUnichar aChar

    AssignLiteral

    void AssignLiteral(const char*) - source

    Parameters

    • char* aStr

    operator=

    nsAString& operator=(const nsAString&) - source

    Parameters

    • nsAString& aString
    nsAString& operator=(const PRUnichar*) - source

    Parameters

    • PRUnichar* aPtr
    nsAString& operator=(PRUnichar) - source

    Parameters

    • PRUnichar aChar

    Replace

    void Replace(PRUint32, PRUint32, const PRUnichar*, PRUint32) - source

    Parameters

    • PRUint32 cutStart
    • PRUint32 cutLength
    • PRUnichar* data
    • PRUint32 length
    void Replace(PRUint32, PRUint32, PRUnichar) - source

    Parameters

    • PRUint32 cutStart
    • PRUint32 cutLength
    • PRUnichar c
    void Replace(PRUint32, PRUint32, const nsAString&) - source

    Parameters

    • PRUint32 cutStart
    • PRUint32 cutLength
    • nsAString& readable

    Append

    void Append(PRUnichar) - source

    Parameters

    • PRUnichar c
    void Append(const PRUnichar*, PRUint32) - source

    Parameters

    • PRUnichar* data
    • PRUint32 length
    void Append(const nsAString&) - source

    Parameters

    • nsAString& readable

    AppendLiteral

    void AppendLiteral(const char*) - source

    Parameters

    • char* aASCIIStr

    operator+=

    nsAString& operator+=(PRUnichar) - source

    Parameters

    • PRUnichar c
    nsAString& operator+=(const PRUnichar*) - source

    Parameters

    • PRUnichar* data
    nsAString& operator+=(const nsAString&) - source

    Parameters

    • nsAString& readable

    Insert

    void Insert(PRUnichar, PRUint32) - source

    Parameters

    • PRUnichar c
    • PRUint32 pos
    void Insert(const PRUnichar*, PRUint32, PRUint32) - source

    Parameters

    • PRUnichar* data
    • PRUint32 pos
    • PRUint32 length
    void Insert(const nsAString&, PRUint32) - source

    Parameters

    • nsAString& readable
    • PRUint32 pos

    Cut

    void Cut(PRUint32, PRUint32) - source

    Parameters

    • PRUint32 cutStart
    • PRUint32 cutLength

    Truncate

    void Truncate() - source

    StripChars

    void StripChars(const char*) - source
    Remove all occurences of characters in aSet from the string.

    Parameters

    • char* aSet

    StripWhitespace

    void StripWhitespace() - source
    Strip whitespace characters from the string.

    Trim

    void Trim(const char*, PRBool, PRBool) - source

    Parameters

    • char* aSet
    • PRBool aLeading
    • PRBool aTrailing

    DefaultComparator

    PRInt32 DefaultComparator(const PRUnichar*, const PRUnichar*, PRUint32) - source

    Parameters

    • PRUnichar* a
    • PRUnichar* b
    • PRUint32 length

    Compare

    PRInt32 Compare(const PRUnichar*, PRInt32 (*)(const PRUnichar*, const PRUnichar*, PRUint32)) const - source

    Parameters

    • PRUnichar* other
    • PRInt32 (*)(PRUnichar*, PRUnichar*, PRUint32) c
    PRInt32 Compare(const nsAString&, PRInt32 (*)(const PRUnichar*, const PRUnichar*, PRUint32)) const - source

    Parameters

    • nsAString& other
    • PRInt32 (*)(PRUnichar*, PRUnichar*, PRUint32) c

    Equals

    PRBool Equals(const PRUnichar*, PRInt32 (*)(const PRUnichar*, const PRUnichar*, PRUint32)) const - source

    Parameters

    • PRUnichar* other
    • PRInt32 (*)(PRUnichar*, PRUnichar*, PRUint32) c
    PRBool Equals(const nsAString&, PRInt32 (*)(const PRUnichar*, const PRUnichar*, PRUint32)) const - source

    Parameters

    • nsAString& other
    • PRInt32 (*)(PRUnichar*, PRUnichar*, PRUint32) c

    operator<

    PRBool operator<(const nsAString&) const - source

    Parameters

    • nsAString& other
    PRBool operator<(const PRUnichar*) const - source

    Parameters

    • PRUnichar* other

    operator<=

    PRBool operator<=(const nsAString&) const - source

    Parameters

    • nsAString& other
    PRBool operator<=(const PRUnichar*) const - source

    Parameters

    • PRUnichar* other

    operator==

    PRBool operator==(const nsAString&) const - source

    Parameters

    • nsAString& other
    PRBool operator==(const PRUnichar*) const - source

    Parameters

    • PRUnichar* other

    operator>=

    PRBool operator>=(const nsAString&) const - source

    Parameters

    • nsAString& other
    PRBool operator>=(const PRUnichar*) const - source

    Parameters

    • PRUnichar* other

    operator>

    PRBool operator>(const nsAString&) const - source

    Parameters

    • nsAString& other
    PRBool operator>(const PRUnichar*) const - source

    Parameters

    • PRUnichar* other

    operator!=

    PRBool operator!=(const nsAString&) const - source

    Parameters

    • nsAString& other
    PRBool operator!=(const PRUnichar*) const - source

    Parameters

    • PRUnichar* other

    EqualsLiteral

    PRBool EqualsLiteral(const char*) const - source

    Parameters

    • char* aASCIIString

    LowerCaseEqualsLiteral

    PRBool LowerCaseEqualsLiteral(const char*) const - source
    Case-insensitive match this string to a lowercase ASCII string.

    Parameters

    • char* aASCIIString

    Find

    PRInt32 Find(const nsAString&, PRInt32 (*)(const PRUnichar*, const PRUnichar*, PRUint32)) const - source
    Find the first occurrence of aStr in this string.

@return the offset of aStr, or -1 if not found

    Parameters

    • nsAString& aStr
    • PRInt32 (*)(PRUnichar*, PRUnichar*, PRUint32) c
    PRInt32 Find(const nsAString&, PRUint32, PRInt32 (*)(const PRUnichar*, const PRUnichar*, PRUint32)) const - source
    Find the first occurrence of aStr in this string, beginning at aOffset.

@return the offset of aStr, or -1 if not found

    Parameters

    • nsAString& aStr
    • PRUint32 aOffset
    • PRInt32 (*)(PRUnichar*, PRUnichar*, PRUint32) c
    PRInt32 Find(const char*, PRBool) const - source
    Find an ASCII string within this string.

@return the offset of aStr, or -1 if not found.

    Parameters

    • char* aStr
    • PRBool aIgnoreCase
    PRInt32 Find(const char*, PRUint32, PRBool) const - source

    Parameters

    • char* aStr
    • PRUint32 aOffset
    • PRBool aIgnoreCase

    RFind

    PRInt32 RFind(const nsAString&, PRInt32 (*)(const PRUnichar*, const PRUnichar*, PRUint32)) const - source
    Find the last occurrence of aStr in this string.

@return The offset of aStr from the beginning of the string,
or -1 if not found.

    Parameters

    • nsAString& aStr
    • PRInt32 (*)(PRUnichar*, PRUnichar*, PRUint32) c
    PRInt32 RFind(const nsAString&, PRInt32, PRInt32 (*)(const PRUnichar*, const PRUnichar*, PRUint32)) const - source
    Find the last occurrence of aStr in this string, beginning at aOffset.

@param aOffset the offset from the beginning of the string to begin
searching. If aOffset < 0, search from end of this string.
@return The offset of aStr from the beginning of the string,
or -1 if not found.

    Parameters

    • nsAString& aStr
    • PRInt32 aOffset
    • PRInt32 (*)(PRUnichar*, PRUnichar*, PRUint32) c
    PRInt32 RFind(const char*, PRBool) const - source
    Find the last occurrence of an ASCII string within this string.

@return The offset of aStr from the beginning of the string,
or -1 if not found.

    Parameters

    • char* aStr
    • PRBool aIgnoreCase
    PRInt32 RFind(const char*, PRInt32, PRBool) const - source
    Find the last occurrence of an ASCII string beginning at aOffset.

@param aOffset the offset from the beginning of the string to begin
searching. If aOffset < 0, search from end of this string.
@return The offset of aStr from the beginning of the string,
or -1 if not found.

    Parameters

    • char* aStr
    • PRInt32 aOffset
    • PRBool aIgnoreCase

    FindChar

    PRInt32 FindChar(PRUnichar, PRUint32) const - source
    Search for the offset of the first occurrence of a character in a
string.

@param aOffset the offset from the beginning of the string to begin
searching
@return The offset of the character from the beginning of the string,
or -1 if not found.

    Parameters

    • PRUnichar aChar
    • PRUint32 aOffset

    RFindChar

    PRInt32 RFindChar(PRUnichar) const - source
    Search for the offset of the last occurrence of a character in a
string.

@return The offset of the character from the beginning of the string,
or -1 if not found.

    Parameters

    • PRUnichar aChar

    AppendInt

    void AppendInt(int, PRInt32) - source
    Append a string representation of a number.

    Parameters

    • int aInt
    • PRInt32 aRadix

    ToInteger

    PRInt32 ToInteger(nsresult*, PRUint32) const - source
    Convert this string to an integer.

@param aErrorCode pointer to contain result code.
@param aRadix must be 10 or 16

    Parameters

    • nsresult* aErrorCode
    • PRUint32 aRadix

    Document Tags and Contributors

     Contributors to this page: teoli, EndersTruth
     Last updated by: EndersTruth,