string.h

Pegasus is an open-source implementationof the DMTF CIM and WBEM standards. It is designed to be por

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#ifndef Pegasus_String_h
#define Pegasus_String_h

#ifdef PEGASUS_OS_HPUX
# ifdef HPUX_IA64_NATIVE_COMPILER
#  include <iostream>
# else
#  include <iostream.h>
# endif
#else
# include <iostream>
#endif
#include <Pegasus/Common/Config.h>
#include <Pegasus/Common/Char16.h>
#include <Pegasus/Common/Linkage.h>

// Locale constants
// These constants need to be defined as follows:
// lower case language; underscore; Uppercase Country
const char ENGLISH_US[] = "en_US";
 

PEGASUS_NAMESPACE_BEGIN

class String;
class StringRep;

/** The CString class provides access to an 8-bit String representation.
*/
class PEGASUS_COMMON_LINKAGE CString
{
public:

    /** Constructs a CString object with null values (default constructor).
    */
    CString();

    /** REVIEWERS: Describe method here.
    @param cstr Specifies the name of the CString instance.
    */
    CString(const CString& cstr);

    /** CString destructor.
    */
    ~CString();

    /** Assigns the values of one CString instance to another.
    @param cstr Specifies the name of the CString instance whose values 
    are assigned to CString.
    */
    CString& operator=(const CString& cstr);

    /** REVIEWERS: Describe constructor here.
    */
    operator const char*() const;

private:

    CString(char* cstr);

    friend class String;

    void* _rep;
};

/**
    The Pegasus String C++ Class implements the CIM string type.
    REVIEWERS: We need more definition here.
*/
class PEGASUS_COMMON_LINKAGE String
{
public:

    /**	This member is used to represent an empty string. Using this 
        member avoids construction of an empty string (for example, String()).
    */
    static const String EMPTY;

    /** Default constructor without parameters. This constructor creates a
	null string. For example, 
	<pre>
	    String test;
	</pre>
    */
    String();

    /** Copy constructor.
    @param str Specifies the name of the String instance.
    */
    String(const String& str);

    /** Initialize with first n characters from str.
    @param str Specifies the name of the String instance.
    @param n Specifies the Uint32 size to use for the length of the string object.
    */
    String(const String& str, Uint32 n);

    /** Initialize with str.
    @param str Specifies the name of the String instance.
    */
    String(const Char16* str);

    /** Initialize with first n characters of str.
    @param str Specifies the name of the String instance.
    @param n Specifies the Uint32 size.
    */
    String(const Char16* str, Uint32 n);

    /** Initialize from a plain C-String:
    @param str Specifies the name of the String instance.
    API supports UTF8
    */
    String(const char* str);

    /** Initialize from the first n characters of a plain C-String:
    @param str Specifies the name of the String instance.
    @param u Specifies the Uint32 size.
    API supports UTF8
    */
    String(const char* str, Uint32 n);

    /** String destructor. 
    */
    ~String();

    /** Assign this string with str. For example,
	<pre>
	    String t1 = "abc";
	    String t2 = t1;
	</pre>
	String t2 is assigned the value of t1.
        @param str Specifies the name of the String to assign to another 
        String instance.
    */
    String& operator=(const String& str);

    /** Assign this string with String str.
        @param str String to assign.
        @return Returns the String.
        API supports UTF8
    */
    String& assign(const String& str);

    /** Assign this string with str.
    */
    String& assign(const Char16* str);

    /** Assign this string with first n characters of str.
    @param n REVIEWERS: Insert text here.
    @param str REVIEWERS: Insert text here.
    */
    String& assign(const Char16* str, Uint32 n);

    /** Assign this string with the plain C-String str.
    @param str REVIEWERS: Insert text here.
    API supports UTF8
    */
    String& assign(const char* str);

    /** Assign this string with first n characters of the plain C-String str.
    @param str REVIEWERS: Insert text here.
    @param n REVIEWERS: Insert text here.
    API supports UTF8
    */
    String& assign(const char* str, Uint32 n);

    /** Clear this string. After calling clear(), size() will return 0.
	<pre>
	    String test = "abc";
	    test.clear();
	</pre>
    */
    void clear();


    /** Reserves memory for capacity characters. Notice
        that this does not change the size of the string (size() returns
        what it did before).  If the capacity of the string is already
        greater or equal to the capacity argument, this method has no
        effect.  The capacity of a String object has no bearing on its
        external behavior.  The capacity of a String is set only for
        performance reasons.
	@param capacity Defines the capacity in characters to reserve.
    */
    void reserveCapacity(Uint32 capacity);

    /** Returns the length of the String object.
	@return Length of the String in characters. For example, 
	<pre>
	    String s = "abcd";
	    assert(s.size() == 4);
	</pre>
        returns a value of 4 for the length.
    */
    Uint32 size() const;

    /** Returns a pointer to the first character in the 
	null-terminated Char16 buffer of the String object.
	@return	Pointer to the first character of the String object. For example, 
    	<pre>
	    String test = "abc";
	    const Char16* q = test.getChar16Data();
	</pre>
        points to the first character in the String instance named test.
    */
    const Char16* getChar16Data() const;

    /** Create an 8-bit representation of this String object. For example,

        @return CString object that provides access to the UTF8 String
        representation.

	<pre>
	    String test = "abc";
            printf("test = %s\n", (const char*)test.getCString());

            NOTE:  Do not do the following:
            const char * p = (const char *)test.getCString();
            The pointer p will be invalid.  This is because
            the CString object is destructed, which deletes
            the heap space for p.
	</pre>
    */
    CString getCString() const;

    /** Returns the specified character of the String object.
	@param index Index of the character to access.
        @return Specified character of the String object.
	@exception IndexOutOfBoundsException If the index
	is outside the bounds of the String.
	<pre>
	    String test = "abc;
	    Char16 c = test[1];
	</pre>
    */
    Char16& operator[](Uint32 index);

    /** Returns the specified character of the String object (const version).
	@param index Index of the character to access.
        @return Specified character of the String object.
	@exception IndexOutOfBoundsException If the index
	is outside the bounds of the String.
    */
    const Char16 operator[](Uint32 index) const;

    /** Append the given character to this String.
	@param c Character to append.
	@return This String.
	<pre>
	    String test = "abc";
	    test.append(Char16('d'));
	    assert(test == "abcd");