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scuffed-code/icu4c/source/common/unicode/unistr.h
Yves Arrouye c69c164be8 ICU-353 basic warnings cleanup (not touching object's memory layout). A 
basic build now compiles w/o a single warning on Linux. One with --enable-strict
is a different matter...

X-SVN-Rev: 1124
2000-04-13 23:00:43 +00:00

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/*
**********************************************************************
* Copyright (C) 1998-1999, International Business Machines
* Corporation and others. All Rights Reserved.
**********************************************************************
*
* File unistr.h
*
* Modification History:
*
* Date Name Description
* 09/25/98 stephen Creation.
* 11/11/98 stephen Changed per 11/9 code review.
* 04/20/99 stephen Overhauled per 4/16 code review.
* 11/18/99 aliu Made to inherit from Replaceable. Added method
* handleReplaceBetween(); other methods unchanged.
*******************************************************************************
*/
#ifndef UNISTR_H
#define UNISTR_H
#include <limits.h>
#include "unicode/utypes.h"
#include "unicode/unicode.h"
#include "unicode/ucnv.h"
#include "unicode/rep.h"
class Locale;
class UCharReference;
class UnicodeStringStreamer;
class UnicodeConverterCPP;
// for unistrm.h
class ostream;
U_COMMON_API ostream &operator<<(ostream& stream, const UnicodeString& s);
/**
* Unicode String literals in C++.
* Dependent on the platform properties, different UnicodeString
* constructors should be used to create a UnicodeString object from
* a string literal.
* The macros are defined for maximum performance.
* They work only for strings that contain "invariant characters", i.e.,
* only latin letters, digits, and some punctuation.
* See utypes.h for details.
*
* The string parameter must be a C string literal.
* The length of the string, not including the terminating
* <code>NUL</code>, must be specified as a constant.
* The U_STRING_DECL macro should be invoked exactly once for one
* such string variable before it is used.
*/
#if U_SIZEOF_WCHAR_T==U_SIZEOF_UCHAR && U_CHARSET_FAMILY==U_ASCII_FAMILY
# define UNICODE_STRING(cs, length) UnicodeString(TRUE, (UChar *)L ## cs, length)
#elif U_SIZEOF_UCHAR==1 && U_CHARSET_FAMILY==U_ASCII_FAMILY
# define UNICODE_STRING(cs, length) UnicodeString(TRUE, (UChar *)cs, length)
#else
# define UNICODE_STRING(cs, length) UnicodeString(cs, length, "")
#endif
/**
* UnicodeString is a concrete implementation of the abstract class Replaceable.
* It is a string class that stores Unicode characters directly and provides
* similar functionality as the Java string class.
*
* UnicodeString uses four storage models:
* <ol>
* <li>Short strings are normally stored inside the UnicodeString object itself.
* The object has fields for the "bookkeeping" and a small UChar array.
* When the object is copied, then the internal characters are copied
* into the destination object.</li>
* <li>Longer strings are normally stored in allocated memory.
* The allocated UChar array is preceeded by a reference counter.
* When the string object is copied, then the allocated buffer is shared by
* incrementing the reference counter.</li>
* <li>A UnicodeString can be constructed or setTo() such that it aliases a read-only
* buffer instead of copying the characters. In this case, the string object
* uses this aliased buffer for as long as it is not modified, and it will never
* attempt to modify or release the buffer. This has copy-on-write semantics:
* When the string object is modified, then the buffer contents is first copied
* into writeable memory (inside the object for short strings, or allocated
* buffer for longer strings). When a UnicodeString with a read-only alias
* is assigned to another UnicodeString, then both string objects will
* share the same read-only alias.</li>
* <li>A UnicodeString can be constructed or setTo() such that it aliases a writeable
* buffer instead of copying the characters. The difference from the above is that
* the string object will write through to this aliased buffer for write
* operations. Only when the capacity of the buffer is not sufficient is
* a new buffer allocated and the contents copied.
* An efficient way to get the string contents into the original buffer is
* to use the extract(..., UChar *dst, ...) function: It will only copy the
* string contents if the dst buffer is different from the buffer of the string
* object itself. If a string grows and shrinks during a sequence of operations,
* then it will not use the same buffer any more, but may fit into it again.
* When a UnicodeString with a writeable alias is assigned to another UnicodeString,
* then the contents is always copied. The destination string will not alias
* to the buffer that the source string aliases.</li>
* </ol>
*/
class U_COMMON_API UnicodeString : public Replaceable
{
public:
//========================================
// Read-only operations
//========================================
/* Comparison - bitwise only - for international comparison use collation */
/**
* Equality operator. Performs only bitwise comparison.
* @param text The UnicodeString to compare to this one.
* @return TRUE if <TT>text</TT> contains the same characters as this one,
* FALSE otherwise.
* @stable
*/
inline bool_t operator== (const UnicodeString& text) const;
/**
* Inequality operator. Performs only bitwise comparison.
* @param text The UnicodeString to compare to this one.
* @return FALSE if <TT>text</TT> contains the same characters as this one,
* TRUE otherwise.
* @stable
*/
inline bool_t operator!= (const UnicodeString& text) const;
/**
* Greater than operator. Performs only bitwise comparison.
* @param text The UnicodeString to compare to this one.
* @return TRUE if the characters in <TT>text</TT> are bitwise
* greater than the characters in this, FALSE otherwise
* @stable
*/
inline bool_t operator> (const UnicodeString& text) const;
/**
* Less than operator. Performs only bitwise comparison.
* @param text The UnicodeString to compare to this one.
* @return TRUE if the characters in <TT>text</TT> are bitwise
* less than the characters in this, FALSE otherwise
* @stable
*/
inline bool_t operator< (const UnicodeString& text) const;
/**
* Greater than or equal operator. Performs only bitwise comparison.
* @param text The UnicodeString to compare to this one.
* @return TRUE if the characters in <TT>text</TT> are bitwise
* greater than or equal to the characters in this, FALSE otherwise
* @stable
*/
inline bool_t operator>= (const UnicodeString& text) const;
/**
* Less than or equal operator. Performs only bitwise comparison.
* @param text The UnicodeString to compare to this one.
* @return TRUE if the characters in <TT>text</TT> are bitwise
* less than or equal to the characters in this, FALSE otherwise
* @stable
*/
inline bool_t operator<= (const UnicodeString& text) const;
/**
* Compare the characters bitwise in this UnicodeString to
* the characters in <TT>text</TT>.
* @param text The UnicodeString to compare to this one.
* @return The result of bitwise character comparison: 0 if <TT>text</TT>
* contains the same characters as this, -1 if the characters in
* <TT>text</TT> are bitwise less than the characters in this, +1 if the
* characters in <TT>text</TT> are bitwise greater than the characters
* in this.
* @stable
*/
inline int8_t compare(const UnicodeString& text) const;
/**
* Compare the characters bitwise in the range
* [<TT>start</TT>, <TT>start + length</TT>) with the characters
* in <TT>srcText</TT>
* @param start the offset at which the compare operation begins
* @param length the number of characters of text to compare.
* @param srcText the text to be compared
* @return The result of bitwise character comparison: 0 if <TT>text</TT>
* contains the same characters as this, -1 if the characters in
* <TT>text</TT> are bitwise less than the characters in this, +1 if the
* characters in <TT>text</TT> are bitwise greater than the characters
* in this.
* @stable
*/
inline int8_t compare(UTextOffset start,
int32_t length,
const UnicodeString& srcText) const;
/**
* Compare the characters bitwise in the range
* [<TT>start</TT>, <TT>start + length</TT>) with the characters
* in <TT>srcText</TT> in the range
* [<TT>srcStart</TT>, <TT>srcStart + srcLength</TT>).
* @param start the offset at which the compare operation begins
* @param length the number of characters in this to compare.
* @param srcText the text to be compared
* @param srcStart the offset into <TT>srcText</TT> to start comparison
* @param srcLength the number of characters in <TT>src</TT> to compare
* @return The result of bitwise character comparison: 0 if <TT>text</TT>
* contains the same characters as this, -1 if the characters in
* <TT>text</TT> are bitwise less than the characters in this, +1 if the
* characters in <TT>text</TT> are bitwise greater than the characters
* in this.
* @stable
*/
inline int8_t compare(UTextOffset start,
int32_t length,
const UnicodeString& srcText,
UTextOffset srcStart,
int32_t srcLength) const;
/**
* Compare the characters bitwise in this UnicodeString with the first
* <TT>srcLength</TT> characters in <TT>srcChars</TT>.
* @param srcChars The characters to compare to this UnicodeString.
* @param srcLength the number of characters in <TT>srcChars</TT> to compare
* @return The result of bitwise character comparison: 0 if <TT>text</TT>
* contains the same characters as this, -1 if the characters in
* <TT>text</TT> are bitwise less than the characters in this, +1 if the
* characters in <TT>text</TT> are bitwise greater than the characters
* in this.
* @stable
*/
inline int8_t compare(const UChar *srcChars,
int32_t srcLength) const;
/**
* Compare the characters bitwise in the range
* [<TT>start</TT>, <TT>start + length</TT>) with the first
* <TT>length</TT> characters in <TT>srcChars</TT>
* @param start the offset at which the compare operation begins
* @param length the number of characters to compare.
* @param srcChars the characters to be compared
* @return The result of bitwise character comparison: 0 if <TT>text</TT>
* contains the same characters as this, -1 if the characters in
* <TT>text</TT> are bitwise less than the characters in this, +1 if the
* characters in <TT>text</TT> are bitwise greater than the characters
* in this.
* @stable
*/
inline int8_t compare(UTextOffset start,
int32_t length,
const UChar *srcChars) const;
/**
* Compare the characters bitwise in the range
* [<TT>start</TT>, <TT>start + length</TT>) with the characters
* in <TT>srcChars</TT> in the range
* [<TT>srcStart</TT>, <TT>srcStart + srcLength</TT>).
* @param start the offset at which the compare operation begins
* @param length the number of characters in this to compare
* @param srcChars the characters to be compared
* @param srcStart the offset into <TT>srcChars</TT> to start comparison
* @param srcLength the number of characters in <TT>srcChars</TT> to compare
* @return The result of bitwise character comparison: 0 if <TT>text</TT>
* contains the same characters as this, -1 if the characters in
* <TT>text</TT> are bitwise less than the characters in this, +1 if the
* characters in <TT>text</TT> are bitwise greater than the characters
* in this.
* @stable
*/
inline int8_t compare(UTextOffset start,
int32_t length,
const UChar *srcChars,
UTextOffset srcStart,
int32_t srcLength) const;
/**
* Compare the characters bitwise in the range
* [<TT>start</TT>, <TT>limit</TT>) with the characters
* in <TT>srcText</TT> in the range
* [<TT>srcStart</TT>, <TT>srcLimit</TT>).
* @param start the offset at which the compare operation begins
* @param limit the offset immediately following the compare operation
* @param srcText the text to be compared
* @param srcStart the offset into <TT>srcText</TT> to start comparison
* @param srcLimit the offset into <TT>srcText</TT> to limit comparison
* @return The result of bitwise character comparison: 0 if <TT>text</TT>
* contains the same characters as this, -1 if the characters in
* <TT>text</TT> are bitwise less than the characters in this, +1 if the
* characters in <TT>text</TT> are bitwise greater than the characters
* in this.
* @stable
*/
inline int8_t compareBetween(UTextOffset start,
UTextOffset limit,
const UnicodeString& srcText,
UTextOffset srcStart,
UTextOffset srcLimit) const;
/**
* Determine if this starts with the characters in <TT>text</TT>
* @param text The text to match.
* @return TRUE if this starts with the characters in <TT>text</TT>,
* FALSE otherwise
* @stable
*/
inline bool_t startsWith(const UnicodeString& text) const;
/**
* Determine if this starts with the characters in <TT>srcText</TT>
* in the range [<TT>srcStart</TT>, <TT>srcStart + srcLength</TT>).
* @param srcText The text to match.
* @param srcStart the offset into <TT>srcText</TT> to start matching
* @param srcLength the number of characters in <TT>srcText</TT> to match
* @return TRUE if this starts with the characters in <TT>text</TT>,
* FALSE otherwise
* @stable
*/
inline bool_t startsWith(const UnicodeString& srcText,
UTextOffset srcStart,
int32_t srcLength) const;
/**
* Determine if this starts with the characters in <TT>srcChars</TT>
* @param srcChars The characters to match.
* @param srcLength the number of characters in <TT>srcChars</TT>
* @return TRUE if this starts with the characters in <TT>srcChars</TT>,
* FALSE otherwise
* @stable
*/
inline bool_t startsWith(const UChar *srcChars,
int32_t srcLength) const;
/**
* Determine if this ends with the characters in <TT>srcChars</TT>
* in the range [<TT>srcStart</TT>, <TT>srcStart + srcLength</TT>).
* @param srcChars The characters to match.
* @param srcStart the offset into <TT>srcText</TT> to start matching
* @param srcLength the number of characters in <TT>srcChars</TT> to match
* @return TRUE if this ends with the characters in <TT>srcChars</TT>,
FALSE otherwise
* @stable
*/
inline bool_t startsWith(const UChar *srcChars,
UTextOffset srcStart,
int32_t srcLength) const;
/**
* Determine if this ends with the characters in <TT>text</TT>
* @param text The text to match.
* @return TRUE if this ends with the characters in <TT>text</TT>,
* FALSE otherwise
* @stable
*/
inline bool_t endsWith(const UnicodeString& text) const;
/**
* Determine if this ends with the characters in <TT>srcText</TT>
* in the range [<TT>srcStart</TT>, <TT>srcStart + srcLength</TT>).
* @param srcText The text to match.
* @param srcStart the offset into <TT>srcText</TT> to start matching
* @param srcLength the number of characters in <TT>srcText</TT> to match
* @return TRUE if this ends with the characters in <TT>text</TT>,
* FALSE otherwise
* @stable
*/
inline bool_t endsWith(const UnicodeString& srcText,
UTextOffset srcStart,
int32_t srcLength) const;
/**
* Determine if this ends with the characters in <TT>srcChars</TT>
* @param srcChars The characters to match.
* @param srcLength the number of characters in <TT>srcChars</TT>
* @return TRUE if this ends with the characters in <TT>srcChars</TT>,
* FALSE otherwise
* @stable
*/
inline bool_t endsWith(const UChar *srcChars,
int32_t srcLength) const;
/**
* Determine if this ends with the characters in <TT>srcChars</TT>
* in the range [<TT>srcStart</TT>, <TT>srcStart + srcLength</TT>).
* @param srcChars The characters to match.
* @param srcStart the offset into <TT>srcText</TT> to start matching
* @param srcLength the number of characters in <TT>srcChars</TT> to match
* @return TRUE if this ends with the characters in <TT>srcChars</TT>,
* FALSE otherwise
* @stable
*/
inline bool_t endsWith(const UChar *srcChars,
UTextOffset srcStart,
int32_t srcLength) const;
/* Searching - bitwise only */
/**
* Locate in this the first occurrence of the characters in <TT>text</TT>,
* using bitwise comparison.
* @param text The text to search for.
* @return The offset into this of the start of <TT>text</TT>,
* or -1 if not found.
* @stable
*/
inline UTextOffset indexOf(const UnicodeString& text) const;
/**
* Locate in this the first occurrence of the characters in <TT>text</TT>
* starting at offset <TT>start</TT>, using bitwise comparison.
* @param text The text to search for.
* @param start The offset at which searching will start.
* @return The offset into this of the start of <TT>text</TT>,
* or -1 if not found.
* @stable
*/
inline UTextOffset indexOf(const UnicodeString& text,
UTextOffset start) const;
/**
* Locate in this the first occurrence in the range
* [<TT>start</TT>, <TT>start + length</TT>) of the characters
* in <TT>text</TT>, using bitwise comparison.
* @param text The text to search for.
* @param start The offset at which searching will start.
* @param length The number of characters to search
* @return The offset into this of the start of <TT>text</TT>,
* or -1 if not found.
* @stable
*/
inline UTextOffset indexOf(const UnicodeString& text,
UTextOffset start,
int32_t length) const;
/**
* Locate in this the first occurrence in the range
* [<TT>start</TT>, <TT>start + length</TT>) of the characters
* in <TT>srcText</TT> in the range
* [<TT>srcStart</TT>, <TT>srcStart + srcLength</TT>),
* using bitwise comparison.
* @param text The text to search for.
* @param srcStart the offset into <TT>srcText</TT> at which
* to start matching
* @param srcLength the number of characters in <TT>srcText</TT> to match
* @param start the offset into this at which to start matching
* @param length the number of characters in this to search
* @return The offset into this of the start of <TT>text</TT>,
* or -1 if not found.
* @stable
*/
inline UTextOffset indexOf(const UnicodeString& srcText,
UTextOffset srcStart,
int32_t srcLength,
UTextOffset start,
int32_t length) const;
/**
* Locate in this the first occurrence of the characters in
* <TT>srcChars</TT>
* starting at offset <TT>start</TT>, using bitwise comparison.
* @param srcChars The text to search for.
* @param srcLength the number of characters in <TT>srcChars</TT> to match
* @param start the offset into this at which to start matching
* @return The offset into this of the start of <TT>text</TT>,
* or -1 if not found.
* @stable
*/
inline UTextOffset indexOf(const UChar *srcChars,
int32_t srcLength,
UTextOffset start) const;
/**
* Locate in this the first occurrence in the range
* [<TT>start</TT>, <TT>start + length</TT>) of the characters
* in <TT>srcChars</TT>, using bitwise comparison.
* @param text The text to search for.
* @param srcLength the number of characters in <TT>srcChars</TT>
* @param start The offset at which searching will start.
* @param length The number of characters to search
* @return The offset into this of the start of <TT>srcChars</TT>,
* or -1 if not found.
* @stable
*/
inline UTextOffset indexOf(const UChar *srcChars,
int32_t srcLength,
UTextOffset start,
int32_t length) const;
/**
* Locate in this the first occurrence in the range
* [<TT>start</TT>, <TT>start + length</TT>) of the characters
* in <TT>srcChars</TT> in the range
* [<TT>srcStart</TT>, <TT>srcStart + srcLength</TT>),
* using bitwise comparison.
* @param srcChars The text to search for.
* @param srcStart the offset into <TT>srcChars</TT> at which
* to start matching
* @param srcLength the number of characters in <TT>srcChars</TT> to match
* @param start the offset into this at which to start matching
* @param length the number of characters in this to search
* @return The offset into this of the start of <TT>text</TT>,
* or -1 if not found.
* @stable
*/
UTextOffset indexOf(const UChar *srcChars,
UTextOffset srcStart,
int32_t srcLength,
UTextOffset start,
int32_t length) const;
/**
* Locate in this the first occurrence of the code unit <TT>c</TT>,
* using bitwise comparison.
* @param c The code unit to search for.
* @return The offset into this of <TT>c</TT>, or -1 if not found.
* @draft
*/
inline UTextOffset indexOf(UChar c) const;
/**
* Locate in this the first occurrence of the code point <TT>c</TT>,
* using bitwise comparison.
* @param c The code point to search for.
* @return The offset into this of <TT>c</TT>, or -1 if not found.
* @draft
*/
inline UTextOffset indexOf(UChar32 c) const;
/**
* Locate in this the first occurrence of the code unit <TT>c</TT>
* starting at offset <TT>start</TT>, using bitwise comparison.
* @param c The code unit to search for.
* @param start The offset at which searching will start.
* @return The offset into this of <TT>c</TT>, or -1 if not found.
* @draft
*/
inline UTextOffset indexOf(UChar c,
UTextOffset start) const;
/**
* Locate in this the first occurrence of the code point <TT>c</TT>
* starting at offset <TT>start</TT>, using bitwise comparison.
* @param c The code point to search for.
* @param start The offset at which searching will start.
* @return The offset into this of <TT>c</TT>, or -1 if not found.
* @draft
*/
inline UTextOffset indexOf(UChar32 c,
UTextOffset start) const;
/**
* Locate in this the first occurrence of the code unit <TT>c</TT>
* in the range [<TT>start</TT>, <TT>start + length</TT>),
* using bitwise comparison.
* @param c The code unit to search for.
* @param start the offset into this at which to start matching
* @param length the number of characters in this to search
* @return The offset into this of <TT>c</TT>, or -1 if not found.
* @draft
*/
inline UTextOffset indexOf(UChar c,
UTextOffset start,
int32_t length) const;
/**
* Locate in this the first occurrence of the code point <TT>c</TT>
* in the range [<TT>start</TT>, <TT>start + length</TT>),
* using bitwise comparison.
* @param c The code point to search for.
* @param start the offset into this at which to start matching
* @param length the number of characters in this to search
* @return The offset into this of <TT>c</TT>, or -1 if not found.
* @draft
*/
inline UTextOffset indexOf(UChar32 c,
UTextOffset start,
int32_t length) const;
/**
* Locate in this the last occurrence of the characters in <TT>text</TT>,
* using bitwise comparison.
* @param text The text to search for.
* @return The offset into this of the start of <TT>text</TT>,
* or -1 if not found.
* @stable
*/
inline UTextOffset lastIndexOf(const UnicodeString& text) const;
/**
* Locate in this the last occurrence of the characters in <TT>text</TT>
* starting at offset <TT>start</TT>, using bitwise comparison.
* @param text The text to search for.
* @param start The offset at which searching will start.
* @return The offset into this of the start of <TT>text</TT>,
* or -1 if not found.
* @stable
*/
inline UTextOffset lastIndexOf(const UnicodeString& text,
UTextOffset start) const;
/**
* Locate in this the last occurrence in the range
* [<TT>start</TT>, <TT>start + length</TT>) of the characters
* in <TT>text</TT>, using bitwise comparison.
* @param text The text to search for.
* @param start The offset at which searching will start.
* @param length The number of characters to search
* @return The offset into this of the start of <TT>text</TT>,
* or -1 if not found.
* @stable
*/
inline UTextOffset lastIndexOf(const UnicodeString& text,
UTextOffset start,
int32_t length) const;
/**
* Locate in this the last occurrence in the range
* [<TT>start</TT>, <TT>start + length</TT>) of the characters
* in <TT>srcText</TT> in the range
* [<TT>srcStart</TT>, <TT>srcStart + srcLength</TT>),
* using bitwise comparison.
* @param text The text to search for.
* @param srcStart the offset into <TT>srcText</TT> at which
* to start matching
* @param srcLength the number of characters in <TT>srcText</TT> to match
* @param start the offset into this at which to start matching
* @param length the number of characters in this to search
* @return The offset into this of the start of <TT>text</TT>,
* or -1 if not found.
* @stable
*/
inline UTextOffset lastIndexOf(const UnicodeString& srcText,
UTextOffset srcStart,
int32_t srcLength,
UTextOffset start,
int32_t length) const;
/**
* Locate in this the last occurrence of the characters in <TT>srcChars</TT>
* starting at offset <TT>start</TT>, using bitwise comparison.
* @param srcChars The text to search for.
* @param srcLength the number of characters in <TT>srcChars</TT> to match
* @param start the offset into this at which to start matching
* @return The offset into this of the start of <TT>text</TT>,
* or -1 if not found.
* @stable
*/
inline UTextOffset lastIndexOf(const UChar *srcChars,
int32_t srcLength,
UTextOffset start) const;
/**
* Locate in this the last occurrence in the range
* [<TT>start</TT>, <TT>start + length</TT>) of the characters
* in <TT>srcChars</TT>, using bitwise comparison.
* @param text The text to search for.
* @param srcLength the number of characters in <TT>srcChars</TT>
* @param start The offset at which searching will start.
* @param length The number of characters to search
* @return The offset into this of the start of <TT>srcChars</TT>,
* or -1 if not found.
* @stable
*/
inline UTextOffset lastIndexOf(const UChar *srcChars,
int32_t srcLength,
UTextOffset start,
int32_t length) const;
/**
* Locate in this the last occurrence in the range
* [<TT>start</TT>, <TT>start + length</TT>) of the characters
* in <TT>srcChars</TT> in the range
* [<TT>srcStart</TT>, <TT>srcStart + srcLength</TT>),
* using bitwise comparison.
* @param srcChars The text to search for.
* @param srcStart the offset into <TT>srcChars</TT> at which
* to start matching
* @param srcLength the number of characters in <TT>srcChars</TT> to match
* @param start the offset into this at which to start matching
* @param length the number of characters in this to search
* @return The offset into this of the start of <TT>text</TT>,
* or -1 if not found.
* @stable
*/
UTextOffset lastIndexOf(const UChar *srcChars,
UTextOffset srcStart,
int32_t srcLength,
UTextOffset start,
int32_t length) const;
/**
* Locate in this the last occurrence of the code unit <TT>c</TT>,
* using bitwise comparison.
* @param c The code unit to search for.
* @return The offset into this of <TT>c</TT>, or -1 if not found.
* @draft
*/
inline UTextOffset lastIndexOf(UChar c) const;
/**
* Locate in this the last occurrence of the code point <TT>c</TT>,
* using bitwise comparison.
* @param c The code point to search for.
* @return The offset into this of <TT>c</TT>, or -1 if not found.
* @draft
*/
inline UTextOffset lastIndexOf(UChar32 c) const;
/**
* Locate in this the last occurrence of the code unit <TT>c</TT>
* starting at offset <TT>start</TT>, using bitwise comparison.
* @param c The code unit to search for.
* @param start The offset at which searching will start.
* @return The offset into this of <TT>c</TT>, or -1 if not found.
* @draft
*/
inline UTextOffset lastIndexOf(UChar c,
UTextOffset start) const;
/**
* Locate in this the last occurrence of the code point <TT>c</TT>
* starting at offset <TT>start</TT>, using bitwise comparison.
* @param c The code point to search for.
* @param start The offset at which searching will start.
* @return The offset into this of <TT>c</TT>, or -1 if not found.
* @draft
*/
inline UTextOffset lastIndexOf(UChar32 c,
UTextOffset start) const;
/**
* Locate in this the last occurrence of the code unit <TT>c</TT>
* in the range [<TT>start</TT>, <TT>start + length</TT>),
* using bitwise comparison.
* @param c The code unit to search for.
* @param start the offset into this at which to start matching
* @param length the number of characters in this to search
* @return The offset into this of <TT>c</TT>, or -1 if not found.
* @draft
*/
inline UTextOffset lastIndexOf(UChar c,
UTextOffset start,
int32_t length) const;
/**
* Locate in this the last occurrence of the code point <TT>c</TT>
* in the range [<TT>start</TT>, <TT>start + length</TT>),
* using bitwise comparison.
* @param c The code point to search for.
* @param start the offset into this at which to start matching
* @param length the number of characters in this to search
* @return The offset into this of <TT>c</TT>, or -1 if not found.
* @draft
*/
inline UTextOffset lastIndexOf(UChar32 c,
UTextOffset start,
int32_t length) const;
/* Character access */
/**
* Return the code unit at offset <tt>offset</tt>.
* @param offset a valid offset into the text
* @returns the code unit at offset <tt>offset</tt>
* @draft
*/
inline UChar charAt(UTextOffset offset) const;
/**
* Return the code unit at offset <tt>offset</tt>.
* @param offset a valid offset into the text
* @returns the code unit at offset <tt>offset</tt>
* @draft
*/
inline UChar operator [] (UTextOffset offset) const;
/**
* Return the code point that contains the code unit
* at offset <tt>offset</tt>.
* @param offset a valid offset into the text
* that indicates the text offset of any of the code units
* that will be assembled into a code point (21-bit value) and returned
* @returns the code point of text at <tt>offset</tt>
* @draft
*/
inline UChar32 char32At(UTextOffset offset) const;
/**
* Adjust a random-access offset so that
* it points to the beginning of a Unicode character.
* The offset that is passed in points to
* any code unit of a code point,
* while the returned offset will point to the first code unit
* of the same code point.
* In UTF-16, if the input offset points to a second surrogate
* of a surrogate pair, then the returned offset will point
* to the first surrogate.
* @param offset a valid offset into one code point of the text
* @return offset of the first code unit of the same code point
*/
inline UTextOffset getCharStart(UTextOffset offset);
/**
* Adjust a random-access offset so that
* it points behind a Unicode character.
* The offset that is passed in points behind
* any code unit of a code point,
* while the returned offset will point behind the last code unit
* of the same code point.
* In UTF-16, if the input offset points behind the first surrogate
* (i.e., to the second surrogate)
* of a surrogate pair, then the returned offset will point
* behind the second surrogate (i.e., to the first surrogate).
* @param offset a valid offset after any code unit of a code point of the text
* @return offset of the first code unit after the same code point
*/
inline UTextOffset getCharLimit(UTextOffset offset);
/* Substring extraction */
/**
* Copy the characters in the range
* [<tt>start</tt>, <tt>start + length</tt>) into the array <tt>dst</tt>,
* beginning at <tt>dstStart</tt>.
* If the string aliases to <code>dst</code> itself as an external buffer,
* then extract() will not copy the contents.
*
* @param start offset of first character which will be copied into the array
* @param length the number of characters to extract
* @param dst array in which to copy characters. The length of <tt>dst</tt>
* must be at least (<tt>dstStart + length</tt>).
* @param dstStart the offset in <TT>dst</TT> where the first character
* will be extracted
* @stable
*/
inline void extract(UTextOffset start,
int32_t length,
UChar *dst,
UTextOffset dstStart = 0) const;
/**
* Copy the characters in the range
* [<tt>start</tt>, <tt>start + length</tt>) into the UnicodeString
* <tt>target</tt>.
* @param start offset of first character which will be copied
* @param length the number of characters to extract
* @param target UnicodeString into which to copy characters.
* @return A reference to <TT>target</TT>
* @stable
*/
inline void extract(UTextOffset start,
int32_t length,
UnicodeString& target) const;
/**
* Copy the characters in the range [<tt>start</tt>, <tt>limit</tt>)
* into the array <tt>dst</tt>, beginning at <tt>dstStart</tt>.
* @param start offset of first character which will be copied into the array
* @param limit offset immediately following the last character to be copied
* @param dst array in which to copy characters. The length of <tt>dst</tt>
* must be at least (<tt>dstStart + (limit - start)</tt>).
* @param dstStart the offset in <TT>dst</TT> where the first character
* will be extracted
* @stable
*/
inline void extractBetween(UTextOffset start,
UTextOffset limit,
UChar *dst,
UTextOffset dstStart = 0) const;
/**
* Copy the characters in the range [<tt>start</tt>, <tt>limit</tt>)
* into the UnicodeString <tt>target</tt>.
* @param start offset of first character which will be copied
* @param limit offset immediately following the last character to be copied
* @param target UnicodeString into which to copy characters.
* @return A reference to <TT>target</TT>
* @stable
*/
inline void extractBetween(UTextOffset start,
UTextOffset limit,
UnicodeString& target) const;
/**
* Copy the characters in the range
* [<tt>start</TT>, <tt>start + length</TT>) into an array of characters
* in a specified codepage.
* @param start offset of first character which will be copied
* @param length the number of characters to extract
* @param target the target buffer for extraction
* @param codepage the desired codepage for the characters. 0 has
* the special meaning of the default codepage
* If <code>codepage</code> is an empty string (<code>""</code>),
* then a simple conversion is performed on the codepage-invariant
* subset ("invariant characters") of the platform encoding. See utypes.h.
* @return the number of characters written to <TT>dst</TT>
* @stable
*/
int32_t extract(UTextOffset start,
int32_t length,
char *dst,
const char *codepage = 0) const;
/* Length operations */
/**
* Return the length of the UnicodeString object.
* The length is the number of characters in the text.
* @returns the length of the UnicodeString object
* @stable
*/
inline int32_t length(void) const;
/**
* Determine if this string is empty.
* @return TRUE if this string contains 0 characters, FALSE otherwise.
* @stable
*/
inline bool_t empty(void) const;
/* Other operations */
/**
* Generate a hash code for this object.
* @return The hash code of this UnicodeString.
* @stable
*/
inline int32_t hashCode(void) const;
/**
* Determine if this string is still valid.
* @return TRUE if the string is valid, FALSE otherwise
* @draft
*/
inline bool_t isBogus(void) const;
//========================================
// Write operations
//========================================
/* Assignment operations */
/**
* Assignment operator. Replace the characters in this UnicodeString
* with the characters from <TT>srcText</TT>.
* @param srcText The text containing the characters to replace
* @return a reference to this
* @stable
*/
UnicodeString& operator= (const UnicodeString& srcText);
/**
* Assignment operator. Replace the characters in this UnicodeString
* with the character <TT>ch</TT>.
* @param ch the character to replace
* @return a reference to this
* @draft
*/
inline UnicodeString& operator= (UChar ch);
/**
* Set the text in the UnicodeString object to the characters
* in <TT>srcText</TT> in the range
* [<TT>srcStart</TT>, <TT>srcStart + srcLength</TT>).
* <TT>srcText</TT> is not modified.
* @param srcText the source for the new characters
* @param srcStart the offset into <TT>srcText</TT> where new characters
* will be obtained
* @param srcLength the number of characters in <TT>srcText</TT> in the
* replace string.
* @return a reference to this
* @stable
*/
inline UnicodeString& setTo(const UnicodeString& srcText,
UTextOffset srcStart,
int32_t srcLength);
/**
* Set the text in the UnicodeString object to the characters in
* <TT>srcText</TT>.
* <TT>srcText</TT> is not modified.
* @param srcText the source for the new characters
* @return a reference to this
* @stable
*/
inline UnicodeString& setTo(const UnicodeString& srcText);
/**
* Set the characters in the UnicodeString object to the characters
* in <TT>srcChars</TT>. <TT>srcChars</TT> is not modified.
* @param srcChars the source for the new characters
* @param srcLength the number of Unicode characters in srcChars.
* @return a reference to this
* @stable
*/
inline UnicodeString& setTo(const UChar *srcChars,
int32_t srcLength);
/**
* Set the characters in the UnicodeString object to the character
* <TT>srcChar</TT>.
* @param srcChar the character which becomes the UnicodeString's character
* content
* @return a reference to this
* @draft
*/
UnicodeString& setTo(UChar srcChar);
/**
* Aliasing setTo() function, analogous to the readonly-aliasing UChar* constructor.
* The text will be used for the UnicodeString object, but
* it will not be released when the UnicodeString is destroyed.
* This has copy-on-write semantics:
* When the string is modified, then the buffer is first copied into
* newly allocated memory.
* The aliased buffer is never modified.
* In an assignment to another UnicodeString, the text will be aliased again,
* so that both strings then alias the same readonly-text.
*
* @param isTerminated specifies if <code>text</code> is <code>NUL</code>-terminated.
* This must be true if <code>textLength==-1</code>.
* @param text The characters to alias for the UnicodeString.
* @param textLength The number of Unicode characters in <code>text</code> to alias.
* If -1, then this constructor will determine the length
* by calling <code>u_strlen()</code>.
* @draft
*/
UnicodeString &setTo(bool_t isTerminated,
const UChar *text,
int32_t textLength);
/**
* Aliasing setTo() function, analogous to the writeable-aliasing UChar* constructor.
* The text will be used for the UnicodeString object, but
* it will not be released when the UnicodeString is destroyed.
* This has write-through semantics:
* For as long as the capacity of the buffer is sufficient, write operations
* will directly affect the buffer. When more capacity is necessary, then
* a new buffer will be allocated and the contents copied as with regularly
* constructed strings.
* In an assignment to another UnicodeString, the buffer will be copied.
* The extract(UChar *dst) function detects whether the dst pointer is the same
* as the string buffer itself and will in this case not copy the contents.
*
* @param buffer The characters to alias for the UnicodeString.
* @param buffLength The number of Unicode characters in <code>buffer</code> to alias.
* @param buffCapacity The size of <code>buffer</code> in UChars.
* @draft
*/
UnicodeString &setTo(UChar *buffer,
int32_t buffLength,
int32_t buffCapacity);
/**
* Set the character at the specified offset to the specified character.
* @param offset A valid offset into the text of the character to set
* @param ch The new character
* @return A reference to this
* @draft
*/
UnicodeString& setCharAt(UTextOffset offset,
UChar ch);
/* Append operations */
/**
* Append operator. Append the code unit <TT>ch</TT> to the UnicodeString
* object.
* @param ch the code unit to be appended
* @return a reference to this
* @draft
*/
inline UnicodeString& operator+= (UChar ch);
/**
* Append operator. Append the code point <TT>ch</TT> to the UnicodeString
* object.
* @param ch the code point to be appended
* @return a reference to this
* @draft
*/
inline UnicodeString& operator+= (UChar32 ch);
/**
* Append operator. Append the characters in <TT>srcText</TT> to the
* UnicodeString object at offset <TT>start</TT>. <TT>srcText</TT> is
* not modified.
* @param srcText the source for the new characters
* @return a reference to this
* @stable
*/
inline UnicodeString& operator+= (const UnicodeString& srcText);
/**
* Append the characters
* in <TT>srcText</TT> in the range
* [<TT>srcStart</TT>, <TT>srcStart + srcLength</TT>) to the
* UnicodeString object at offset <TT>start</TT>. <TT>srcText</TT>
* is not modified.
* @param srcText the source for the new characters
* @param srcStart the offset into <TT>srcText</TT> where new characters
* will be obtained
* @param srcLength the number of characters in <TT>srcText</TT> in
* the append string
* @return a reference to this
* @stable
*/
inline UnicodeString& append(const UnicodeString& srcText,
UTextOffset srcStart,
int32_t srcLength);
/**
* Append the characters in <TT>srcText</TT> to the UnicodeString object at
* offset <TT>start</TT>. <TT>srcText</TT> is not modified.
* @param srcText the source for the new characters
* @return a reference to this
* @stable
*/
inline UnicodeString& append(const UnicodeString& srcText);
/**
* Append the characters in <TT>srcChars</TT> in the range
* [<TT>srcStart</TT>, <TT>srcStart + srcLength</TT>) to the UnicodeString
* object at offset
* <TT>start</TT>. <TT>srcChars</TT> is not modified.
* @param srcChars the source for the new characters
* @param srcStart the offset into <TT>srcChars</TT> where new characters
* will be obtained
* @param srcLength the number of characters in <TT>srcChars</TT> in
* the append string
* @return a reference to this
* @stable
*/
inline UnicodeString& append(const UChar *srcChars,
UTextOffset srcStart,
int32_t srcLength);
/**
* Append the characters in <TT>srcChars</TT> to the UnicodeString object
* at offset <TT>start</TT>. <TT>srcChars</TT> is not modified.
* @param srcChars the source for the new characters
* @param srcLength the number of Unicode characters in <TT>srcChars</TT>
* @return a reference to this
* @stable
*/
inline UnicodeString& append(const UChar *srcChars,
int32_t srcLength);
/**
* Append the code unit <TT>srcChar</TT> to the UnicodeString object.
* @param srcChar the code unit to append
* @return a reference to this
* @draft
*/
inline UnicodeString& append(UChar srcChar);
/**
* Append the code point <TT>srcChar</TT> to the UnicodeString object.
* @param srcChar the code point to append
* @return a reference to this
* @draft
*/
inline UnicodeString& append(UChar32 srcChar);
/* Insert operations */
/**
* Insert the characters in <TT>srcText</TT> in the range
* [<TT>srcStart</TT>, <TT>srcStart + srcLength</TT>) into the UnicodeString
* object at offset <TT>start</TT>. <TT>srcText</TT> is not modified.
* @param start the offset where the insertion begins
* @param srcText the source for the new characters
* @param srcStart the offset into <TT>srcText</TT> where new characters
* will be obtained
* @param srcLength the number of characters in <TT>srcText</TT> in
* the insert string
* @return a reference to this
* @stable
*/
inline UnicodeString& insert(UTextOffset start,
const UnicodeString& srcText,
UTextOffset srcStart,
int32_t srcLength);
/**
* Insert the characters in <TT>srcText</TT> into the UnicodeString object
* at offset <TT>start</TT>. <TT>srcText</TT> is not modified.
* @param start the offset where the insertion begins
* @param srcText the source for the new characters
* @return a reference to this
* @stable
*/
inline UnicodeString& insert(UTextOffset start,
const UnicodeString& srcText);
/**
* Insert the characters in <TT>srcChars</TT> in the range
* [<TT>srcStart</TT>, <TT>srcStart + srcLength</TT>) into the UnicodeString
* object at offset <TT>start</TT>. <TT>srcChars</TT> is not modified.
* @param start the offset at which the insertion begins
* @param srcChars the source for the new characters
* @param srcStart the offset into <TT>srcChars</TT> where new characters
* will be obtained
* @param srcLength the number of characters in <TT>srcChars</TT>
* in the insert string
* @return a reference to this
* @stable
*/
inline UnicodeString& insert(UTextOffset start,
const UChar *srcChars,
UTextOffset srcStart,
int32_t srcLength);
/**
* Insert the characters in <TT>srcChars</TT> into the UnicodeString object
* at offset <TT>start</TT>. <TT>srcChars</TT> is not modified.
* @param start the offset where the insertion begins
* @param srcChars the source for the new characters
* @param srcLength the number of Unicode characters in srcChars.
* @return a reference to this
* @stable
*/
inline UnicodeString& insert(UTextOffset start,
const UChar *srcChars,
int32_t srcLength);
/**
* Insert the character <TT>srcChar</TT> into the UnicodeString object at
* offset <TT>start</TT>.
* @param start the offset at which the insertion occurs
* @param srcChar the character to insert
* @return a reference to this
* @draft
*/
inline UnicodeString& insert(UTextOffset start,
UChar srcChar);
/* Replace operations */
/**
* Replace the characters in the range
* [<TT>start</TT>, <TT>start + length</TT>) with the characters in
* <TT>srcText</TT> in the range
* [<TT>srcStart</TT>, <TT>srcStart + srcLength</TT>).
* <TT>srcText</TT> is not modified.
* @param start the offset at which the replace operation begins
* @param length the number of characters to replace. The character at
* <TT>start + length</TT> is not modified.
* @param srcText the source for the new characters
* @param srcStart the offset into <TT>srcText</TT> where new characters
* will be obtained
* @param srcLength the number of characters in <TT>srcText</TT> in
* the replace string
* @return a reference to this
* @stable
*/
UnicodeString& replace(UTextOffset start,
int32_t length,
const UnicodeString& srcText,
UTextOffset srcStart,
int32_t srcLength);
/**
* Replace the characters in the range
* [<TT>start</TT>, <TT>start + length</TT>)
* with the characters in <TT>srcText</TT>. <TT>srcText</TT> is
* not modified.
* @param start the offset at which the replace operation begins
* @param length the number of characters to replace. The character at
* <TT>start + length</TT> is not modified.
* @param srcText the source for the new characters
* @return a reference to this
* @stable
*/
UnicodeString& replace(UTextOffset start,
int32_t length,
const UnicodeString& srcText);
/**
* Replace the characters in the range
* [<TT>start</TT>, <TT>start + length</TT>) with the characters in
* <TT>srcChars</TT> in the range
* [<TT>srcStart</TT>, <TT>srcStart + srcLength</TT>). <TT>srcChars</TT>
* is not modified.
* @param start the offset at which the replace operation begins
* @param length the number of characters to replace. The character at
* <TT>start + length</TT> is not modified.
* @param srcChars the source for the new characters
* @param srcStart the offset into <TT>srcChars</TT> where new characters
* will be obtained
* @param srcLength the number of characters in <TT>srcChars</TT>
* in the replace string
* @return a reference to this
* @stable
*/
UnicodeString& replace(UTextOffset start,
int32_t length,
const UChar *srcChars,
UTextOffset srcStart,
int32_t srcLength);
/**
* Replace the characters in the range
* [<TT>start</TT>, <TT>start + length</TT>) with the characters in
* <TT>srcChars</TT>. <TT>srcChars</TT> is not modified.
* @param start the offset at which the replace operation begins
* @param length number of characters to replace. The character at
* <TT>start + length</TT> is not modified.
* @param srcChars the source for the new characters
* @param srcLength the number of Unicode characters in srcChars
* @return a reference to this
* @stable
*/
inline UnicodeString& replace(UTextOffset start,
int32_t length,
const UChar *srcChars,
int32_t srcLength);
/**
* Replace the characters in the range
* [<TT>start</TT>, <TT>start + length</TT>) with the character
* <TT>srcChar</TT>.
* @param start the offset at which the replace operation begins
* @param length the number of characters to replace. The character at
* <TT>start + length</TT> is not modified.
* @param srcChar the new character
* @return a reference to this
* @draft
*/
inline UnicodeString& replace(UTextOffset start,
int32_t length,
UChar srcChar);
/**
* Replace the characters in the range [<TT>start</TT>, <TT>limit</TT>)
* with the characters in <TT>srcText</TT>. <TT>srcText</TT> is not modified.
* @param start the offset at which the replace operation begins
* @param limit the offset immediately following the replace range
* @param srcText the source for the new characters
* @return a reference to this
* @stable
*/
inline UnicodeString& replaceBetween(UTextOffset start,
UTextOffset limit,
const UnicodeString& srcText);
/**
* Replace the characters in the range [<TT>start</TT>, <TT>limit</TT>)
* with the characters in <TT>srcText</TT> in the range
* [<TT>srcStart</TT>, <TT>srcLimit</TT>). <TT>srcText</TT> is not modified.
* @param start the offset at which the replace operation begins
* @param limit the offset immediately following the replace range
* @param srcText the source for the new characters
* @param srcStart the offset into <TT>srcChars</TT> where new characters
* will be obtained
* @param srcLimit the offset immediately following the range to copy
* in <TT>srcText</TT>
* @return a reference to this
* @stable
*/
inline UnicodeString& replaceBetween(UTextOffset start,
UTextOffset limit,
const UnicodeString& srcText,
UTextOffset srcStart,
UTextOffset srcLimit);
/**
* Replace a substring of this object with the given text.
* @param start the beginning index, inclusive; <code>0 <= start
* <= limit</code>.
* @param limit the ending index, exclusive; <code>start <= limit
* <= length()</code>.
* @param text the text to replace characters <code>start</code>
* to <code>limit - 1</code>
* @stable
*/
virtual void handleReplaceBetween(UTextOffset start,
UTextOffset limit,
const UnicodeString& text);
/* Search and replace operations */
/**
* Replace all occurrences of characters in oldText with the characters
* in newText
* @param oldText the text containing the search text
* @param newText the text containing the replacement text
* @return a reference to this
* @stable
*/
inline UnicodeString& findAndReplace(const UnicodeString& oldText,
const UnicodeString& newText);
/**
* Replace all occurrences of characters in oldText with characters
* in newText
* in the range [<TT>start</TT>, <TT>start + length</TT>).
* @param start the start of the range in which replace will performed
* @param length the length of the range in which replace will be performed
* @param oldText the text containing the search text
* @param newText the text containing the replacement text
* @return a reference to this
* @stable
*/
inline UnicodeString& findAndReplace(UTextOffset start,
int32_t length,
const UnicodeString& oldText,
const UnicodeString& newText);
/**
* Replace all occurrences of characters in oldText in the range
* [<TT>oldStart</TT>, <TT>oldStart + oldLength</TT>) with the characters
* in newText in the range
* [<TT>newStart</TT>, <TT>newStart + newLength</TT>)
* in the range [<TT>start</TT>, <TT>start + length</TT>).
* @param start the start of the range in which replace will performed
* @param length the length of the range in which replace will be performed
* @param oldText the text containing the search text
* @param oldStart the start of the search range in <TT>oldText</TT>
* @param oldLength the length of the search range in <TT>oldText</TT>
* @param newText the text containing the replacement text
* @param newStart the start of the replacement range in <TT>newText</TT>
* @param newLength the length of the replacement range in <TT>newText</TT>
* @return a reference to this
* @stable
*/
UnicodeString& findAndReplace(UTextOffset start,
int32_t length,
const UnicodeString& oldText,
UTextOffset oldStart,
int32_t oldLength,
const UnicodeString& newText,
UTextOffset newStart,
int32_t newLength);
/* Remove operations */
/**
* Remove all characters from the UnicodeString object.
* @return a reference to this
* @stable
*/
inline UnicodeString& remove(void);
/**
* Remove the characters in the range
* [<TT>start</TT>, <TT>start + length</TT>) from the UnicodeString object.
* @param start the offset of the first character to remove
* @param length the number of characters to remove
* @return a reference to this
* @stable
*/
inline UnicodeString& remove(UTextOffset start,
int32_t length = INT32_MAX);
/**
* Remove the characters in the range
* [<TT>start</TT>, <TT>limit</TT>) from the UnicodeString object.
* @param start the offset of the first character to remove
* @param limit the offset immediately following the range to remove
* @return a reference to this
* @stable
*/
inline UnicodeString& removeBetween(UTextOffset start,
UTextOffset limit = INT32_MAX);
/* Length operations */
/**
* Pad the start of this UnicodeString with the character <TT>padChar</TT>.
* If the length of this UnicodeString is less than targetLength,
* length() - targetLength copies of padChar will be added to the
* beginning of this UnicodeString.
* @param targetLength the desired length of the string
* @param padChar the character to use for padding. Defaults to
* space (U+0020)
* @return TRUE if the text was padded, FALSE otherwise.
* @draft
*/
bool_t padLeading(int32_t targetLength,
UChar padChar = 0x0020);
/**
* Pad the end of this UnicodeString with the character <TT>padChar</TT>.
* If the length of this UnicodeString is less than targetLength,
* length() - targetLength copies of padChar will be added to the
* end of this UnicodeString.
* @param targetLength the desired length of the string
* @param padChar the character to use for padding. Defaults to
* space (U+0020)
* @return TRUE if the text was padded, FALSE otherwise.
* @draft
*/
bool_t padTrailing(int32_t targetLength,
UChar padChar = 0x0020);
/**
* Truncate this UnicodeString to the <TT>targetLength</TT>.
* @param targetLength the desired length of this UnicodeString.
* @return TRUE if the text was truncated, FALSE otherwise
* @stable
*/
inline bool_t truncate(int32_t targetLength);
/**
* Trims leading and trailing whitespace from this UnicodeString.
* @return a reference to this
* @stable
*/
UnicodeString& trim(void);
/* Miscellaneous operations */
/**
* Reverse this UnicodeString in place.
* @return a reference to this
* @stable
*/
inline UnicodeString& reverse(void);
/**
* Reverse the range [<TT>start</TT>, <TT>start + length</TT>) in
* this UnicodeString.
* @param start the start of the range to reverse
* @param length the number of characters to to reverse
* @return a reference to this
* @stable
*/
inline UnicodeString& reverse(UTextOffset start,
int32_t length);
/**
* Convert the characters in this to UPPER CASE following the conventions of
* the default locale.
* @return A reference to this.
* @stable
*/
UnicodeString& toUpper(void);
/**
* Convert the characters in this to UPPER CASE following the conventions of
* a specific locale.
* @param locale The locale containing the conventions to use.
* @return A reference to this.
* @stable
*/
UnicodeString& toUpper(const Locale& locale);
/**
* Convert the characters in this to UPPER CASE following the conventions of
* the default.
* @return A reference to this.
* @stable
*/
UnicodeString& toLower(void);
/**
* Convert the characters in this to UPPER CASE following the conventions of
* a specific locale.
* @param locale The locale containing the conventions to use.
* @return A reference to this.
* @stable
*/
UnicodeString& toLower(const Locale& locale);
//========================================
// Constructors
//========================================
/**
* Dummy enumeration for the disambiguation of function signatures.
*/
enum ESignature {
kCodePoint
};
/** Construct an empty UnicodeString.
* @stable
*/
UnicodeString();
/**
* Construct a UnicodeString with capacity to hold <TT>capacity</TT> UChars
* @param capacity the number of UChars this UnicodeString should hold
* before a resize is necessary
* @stable
*/
UnicodeString(int32_t capacity);
/**
* Single UChar (code unit) constructor.
* @param ch the character to place in the UnicodeString
* @draft
*/
UnicodeString(UChar ch);
/**
* Single UChar32 (code point) constructor.
* @param ch the character to place in the UnicodeString
* @param sig is a dummy parameter that guarantees that this
* constructor can be distinguished from
* <code>UnicodeString(int32_t capacity)</code>
* on all platforms
* @draft
*
* Usage example:
* <pre>
* UChar32 c=0x104321;
* UnicodeString us(c, UnicodeString::kCodePoint);
* </pre>
*/
UnicodeString(UChar32 ch, ESignature sig);
/**
* UChar* constructor.
* @param text The characters to place in the UnicodeString. <TT>text</TT>
* must be NULL (U+0000) terminated.
* @stable
*/
UnicodeString(const UChar *text);
/**
* UChar* constructor.
* @param text The characters to place in the UnicodeString.
* @param textLength The number of Unicode characters in <TT>text</TT>
* to copy.
* @stable
*/
UnicodeString(const UChar *text,
int32_t textLength);
/**
* Readonly-aliasing UChar* constructor.
* The text will be used for the UnicodeString object, but
* it will not be released when the UnicodeString is destroyed.
* This has copy-on-write semantics:
* When the string is modified, then the buffer is first copied into
* newly allocated memory.
* The aliased buffer is never modified.
* In an assignment to another UnicodeString, the text will be aliased again,
* so that both strings then alias the same readonly-text.
*
* @param isTerminated specifies if <code>text</code> is <code>NUL</code>-terminated.
* This must be true if <code>textLength==-1</code>.
* @param text The characters to alias for the UnicodeString.
* @param textLength The number of Unicode characters in <code>text</code> to alias.
* If -1, then this constructor will determine the length
* by calling <code>u_strlen()</code>.
* @stable
*/
UnicodeString(bool_t isTerminated,
const UChar *text,
int32_t textLength);
/**
* Writeable-aliasing UChar* constructor.
* The text will be used for the UnicodeString object, but
* it will not be released when the UnicodeString is destroyed.
* This has write-through semantics:
* For as long as the capacity of the buffer is sufficient, write operations
* will directly affect the buffer. When more capacity is necessary, then
* a new buffer will be allocated and the contents copied as with regularly
* constructed strings.
* In an assignment to another UnicodeString, the buffer will be copied.
* The extract(UChar *dst) function detects whether the dst pointer is the same
* as the string buffer itself and will in this case not copy the contents.
*
* @param buffer The characters to alias for the UnicodeString.
* @param buffLength The number of Unicode characters in <code>buffer</code> to alias.
* @param buffCapacity The size of <code>buffer</code> in UChars.
* @draft
*/
UnicodeString(UChar *buffer, int32_t buffLength, int32_t buffCapacity);
/**
* char* constructor.
* @param codepageData an array of bytes, null-terminated
* @param codepage the encoding of <TT>codepageData</TT>. The special
* value 0 for <TT>codepage</TT> indicates that the text is in the
* platform's default codepage.
* If <code>codepage</code> is an empty string (<code>""</code>),
* then a simple conversion is performed on the codepage-invariant
* subset ("invariant characters") of the platform encoding. See utypes.h.
* @stable
*/
UnicodeString(const char *codepageData,
const char *codepage = 0);
/**
* char* constructor.
* @param codepageData an array of bytes.
* @param dataLength The number of bytes in <TT>codepageData</TT>.
* @param codepage the encoding of <TT>codepageData</TT>. The special
* value 0 for <TT>codepage</TT> indicates that the text is in the
* platform's default codepage.
* If <code>codepage</code> is an empty string (<code>""</code>),
* then a simple conversion is performed on the codepage-invariant
* subset ("invariant characters") of the platform encoding. See utypes.h.
* @stable
*/
UnicodeString(const char *codepageData,
int32_t dataLength,
const char *codepage = 0);
/**
* Copy constructor.
* @param that The UnicodeString object to copy.
* @stable
*/
UnicodeString(const UnicodeString& that);
/** Destructor.
* @stable
*/
~UnicodeString();
/* Miscellaneous operations */
/**
* Returns the number of display cells occupied by the range
* [<TT>start</TT>, <TT>length</TT>).
* This function is designed for Asian text and properly takes into account
* halfwidth and fullwidth variants of various CJK characters and the
* combining behavior of the Hangul Jamo characters (with some limitations;
* see documentation for Unicode::getCellWidth()).<BR>
* In order to avoid dealing with fractions, this function can either be
* construed to return twice the actual number of display cells or to
* treat a "cell" as the width of a halfwidth character rather than the
* width of a fullwidth character.
* @param start the start of the range
* @param length the number of characters to measure
* @param asian The <TT>asian</TT> parameter controls whether characters
* considered NEUTRAL by the Unicode class are treated as halfwidth or
* fullwidth here. If you set <TT>asian</TT> to FALSE, neutrals are
* treated as halfwidth, and this function returns a close approximation
* of how many Latin display cells the text will take up in a monospaced
* font.
* @return the number of display cells occupied by the specified substring.
* @stable
*/
int32_t numDisplayCells(UTextOffset start = 0,
int32_t length = INT32_MAX,
bool_t asian = TRUE) const;
UCharReference operator[] (UTextOffset pos);
//========================================
// Implementation methods
//========================================
private:
inline int8_t
doCompare(UTextOffset start,
int32_t length,
const UnicodeString& srcText,
UTextOffset srcStart,
int32_t srcLength) const;
int8_t doCompare(UTextOffset start,
int32_t length,
const UChar *srcChars,
UTextOffset srcStart,
int32_t srcLength) const;
UTextOffset doIndexOf(UChar c,
UTextOffset start,
int32_t length) const;
UTextOffset doLastIndexOf(UChar c,
UTextOffset start,
int32_t length) const;
void doExtract(UTextOffset start,
int32_t length,
UChar *dst,
UTextOffset dstStart) const;
inline void doExtract(UTextOffset start,
int32_t length,
UnicodeString& target) const;
inline UChar doCharAt(UTextOffset offset) const;
UnicodeString& doReplace(UTextOffset start,
int32_t length,
const UnicodeString& srcText,
UTextOffset srcStart,
int32_t srcLength);
UnicodeString& doReplace(UTextOffset start,
int32_t length,
const UChar *srcChars,
UTextOffset srcStart,
int32_t srcLength);
UnicodeString& doReverse(UTextOffset start,
int32_t length);
// calculate hash code
int32_t doHashCode(void) const;
// get pointer to start of array
inline UChar* getArrayStart(void);
inline const UChar* getArrayStart(void) const;
// get the "real" capacity of the array, adjusted for ref count
inline int32_t getCapacity(void) const;
// allocate the array; result may be fStackBuffer
// sets refCount to 1 if appropriate
// sets fArray, fCapacity, and fFlags
// returns boolean for success or failure
bool_t allocate(int32_t capacity);
// release the array if owned
inline void releaseArray();
// utility method to get around lack of exception handling
void setToBogus(void);
// Pin start and limit to acceptable values.
inline void pinIndices(UTextOffset& start,
int32_t& length) const;
/*
* Real constructor for converting from codepage data.
* It assumes that it is called with !fRefCounted.
*
* If <code>codepage==0</code>, then the default converter
* is used for the platform encoding.
* If <code>codepage</code> is an empty string (<code>""</code>),
* then a simple conversion is performed on the codepage-invariant
* subset ("invariant characters") of the platform encoding. See utypes.h.
*/
void doCodepageCreate(const char *codepageData,
int32_t dataLength,
const char *codepage);
/*
* This function is called when write access to the array
* is necessary.
*
* We need to make a copy of the array if
* the buffer is read-only, or
* the buffer is refCounted (shared), and refCount>1, or
* the buffer is too small.
*
* Return FALSE if memory could not be allocated.
*/
bool_t cloneArrayIfNeeded(int32_t newCapacity = -1,
int32_t growCapacity = -1,
bool_t doCopyArray = TRUE,
int32_t **pBufferToDelete = 0);
// ref counting
inline int32_t addRef(void);
inline int32_t removeRef(void);
inline int32_t refCount(void) const;
inline int32_t setRefCount(int32_t count);
// constants
enum {
#if UTF_SIZE==8
US_STACKBUF_SIZE=14, // Size of stack buffer for small strings
#elif UTF_SIZE==16
US_STACKBUF_SIZE=7, // Size of stack buffer for small strings
#else // UTF_SIZE==32
US_STACKBUF_SIZE=3, // Size of stack buffer for small strings
#endif
kInvalidUChar=0xffff, // invalid UChar index
kGrowSize=128, // grow size for this buffer
kInvalidHashCode=0, // invalid hash code
kEmptyHashCode=1, // hash code for empty string
// bit flag values for fFlags
kIsBogus=1, // this string is bogus, i.e., not valid
kUsingStackBuffer=2, // fArray==fStackBuffer
kRefCounted=4, // there is a refCount field before the characters in fArray
kBufferIsReadonly=8, // do not write to this buffer
// combined values for convenience
kShortString=kUsingStackBuffer,
kLongString=kRefCounted,
kReadonlyAlias=kBufferIsReadonly,
kWriteableAlias=0
};
// statics
// default converter cache
static UConverter* getDefaultConverter(UErrorCode& status);
static void releaseDefaultConverter(UConverter *converter);
static UConverter *fgDefaultConverter;
friend class UnicodeStringStreamer;
friend class UnicodeConverterCPP;
friend U_COMMON_API ostream &operator<<(ostream& stream, const UnicodeString& s);
friend class StringCharacterIterator;
/*
* The following are all the class fields that are stored
* in each UnicodeString object.
* Note that UnicodeString has virtual functions,
* therefore there is an implicit vtable pointer
* as the first real field.
* The fields should be aligned such that no padding is
* necessary, mostly by having larger types first.
* On 32-bit machines, the size should be 32 bytes,
* on 64-bit machines (8-byte pointers), it should be 40 bytes.
*/
// (implicit) *vtable;
UChar *fArray; // the Unicode data
int32_t fLength; // number characters in fArray
int32_t fCapacity; // sizeof fArray
uint16_t fFlags; // bit flags: see constants above
#if UTF_SIZE==32
uint16_t fPadding; // padding to align the fStackBuffer for UTF-32
#endif
UChar fStackBuffer [ US_STACKBUF_SIZE ]; // buffer for small strings
public:
//========================================
// Deprecated API
//========================================
/* size() -> length()
* @deprecated */
inline int32_t size(void) const;
// parameters reordered for consistency
/* @deprecated */
inline UnicodeString& findAndReplace(const UnicodeString& oldText,
const UnicodeString& newText,
UTextOffset start,
int32_t length);
/* @deprecated */
inline void* operator new(size_t size);
/* @deprecated */
inline void* operator new(size_t size, void *location);
/* @deprecated */
inline void operator delete(void *location);
//========================================
// Non-public API - will be removed!
//========================================
/* @deprecated */
const UChar* getUChars() const;
};
//========================================
// Array copying
//========================================
// Copy an array of UnicodeString OBJECTS (not pointers).
inline void
uprv_arrayCopy(const UnicodeString *src, UnicodeString *dst, int32_t count)
{ while(count-- > 0) *dst++ = *src++; }
inline void
uprv_arrayCopy(const UnicodeString *src, int32_t srcStart,
UnicodeString *dst, int32_t dstStart, int32_t count)
{ uprv_arrayCopy(src+srcStart, dst+dstStart, count); }
//========================================
// Inline members
//========================================
//========================================
// Read-only alias methods
//========================================
inline bool_t
UnicodeString::operator== (const UnicodeString& text) const
{
if(isBogus()) {
return text.isBogus();
} else {
return
!text.isBogus() &&
fLength == text.fLength &&
doCompare(0, fLength, text, 0, text.fLength) == 0;
}
}
inline bool_t
UnicodeString::operator!= (const UnicodeString& text) const
{ return (! operator==(text)); }
inline bool_t
UnicodeString::operator> (const UnicodeString& text) const
{ return doCompare(0, fLength, text, 0, text.fLength) == 1; }
inline bool_t
UnicodeString::operator< (const UnicodeString& text) const
{ return doCompare(0, fLength, text, 0, text.fLength) == -1; }
inline bool_t
UnicodeString::operator>= (const UnicodeString& text) const
{ return doCompare(0, fLength, text, 0, text.fLength) != -1; }
inline bool_t
UnicodeString::operator<= (const UnicodeString& text) const
{ return doCompare(0, fLength, text, 0, text.fLength) != 1; }
inline int8_t
UnicodeString::compare(const UnicodeString& text) const
{ return doCompare(0, fLength, text, 0, text.fLength); }
inline int8_t
UnicodeString::compare(UTextOffset start,
int32_t length,
const UnicodeString& srcText) const
{ return doCompare(start, length, srcText, 0, srcText.fLength); }
inline int8_t
UnicodeString::compare(const UChar *srcChars,
int32_t srcLength) const
{ return doCompare(0, fLength, srcChars, 0, srcLength); }
inline int8_t
UnicodeString::compare(UTextOffset start,
int32_t length,
const UnicodeString& srcText,
UTextOffset srcStart,
int32_t srcLength) const
{ return doCompare(start, length, srcText, srcStart, srcLength); }
inline int8_t
UnicodeString::compare(UTextOffset start,
int32_t length,
const UChar *srcChars) const
{ return doCompare(start, length, srcChars, 0, length); }
inline int8_t
UnicodeString::compare(UTextOffset start,
int32_t length,
const UChar *srcChars,
UTextOffset srcStart,
int32_t srcLength) const
{ return doCompare(start, length, srcChars, srcStart, srcLength); }
inline int8_t
UnicodeString::compareBetween(UTextOffset start,
UTextOffset limit,
const UnicodeString& srcText,
UTextOffset srcStart,
UTextOffset srcLimit) const
{ return doCompare(start, limit - start,
srcText, srcStart, srcLimit - srcStart); }
inline int8_t
UnicodeString::doCompare(UTextOffset start,
int32_t length,
const UnicodeString& srcText,
UTextOffset srcStart,
int32_t srcLength) const
{
const UChar *srcChars;
if(!srcText.isBogus()) {
srcText.pinIndices(srcStart, srcLength);
srcChars=srcText.getArrayStart();
} else {
srcChars=0;
}
return doCompare(start, length, srcChars, srcStart, srcLength);
}
inline UTextOffset
UnicodeString::indexOf(const UnicodeString& text) const
{ return indexOf(text, 0, text.fLength, 0, fLength); }
inline UTextOffset
UnicodeString::indexOf(const UnicodeString& text,
UTextOffset start) const
{ return indexOf(text, 0, text.fLength, start, fLength - start); }
inline UTextOffset
UnicodeString::indexOf(const UnicodeString& text,
UTextOffset start,
int32_t length) const
{ return indexOf(text, 0, text.fLength, start, length); }
inline UTextOffset
UnicodeString::indexOf(const UnicodeString& srcText,
UTextOffset srcStart,
int32_t srcLength,
UTextOffset start,
int32_t length) const
{
if(!srcText.isBogus()) {
srcText.pinIndices(srcStart, srcLength);
if(srcLength > 0) {
return indexOf(srcText.getArrayStart(), srcStart, srcLength, start, length);
}
}
return -1;
}
inline UTextOffset
UnicodeString::indexOf(const UChar *srcChars,
int32_t srcLength,
UTextOffset start) const
{ return indexOf(srcChars, 0, srcLength, start, fLength - start); }
inline UTextOffset
UnicodeString::indexOf(const UChar *srcChars,
int32_t srcLength,
UTextOffset start,
int32_t length) const
{ return indexOf(srcChars, 0, srcLength, start, length); }
inline UTextOffset
UnicodeString::indexOf(UChar c) const
{ return doIndexOf(c, 0, fLength); }
inline UTextOffset
UnicodeString::indexOf(UChar32 c) const {
if(!UTF_NEED_MULTIPLE_UCHAR(c)) {
return doIndexOf((UChar)c, 0, fLength);
} else {
UChar buffer[UTF_MAX_CHAR_LENGTH];
int32_t length = 0;
UTF_APPEND_CHAR_UNSAFE(buffer, length, c);
return indexOf(buffer, length, 0);
}
}
inline UTextOffset
UnicodeString::indexOf(UChar c,
UTextOffset start) const
{ return doIndexOf(c, start, fLength - start); }
inline UTextOffset
UnicodeString::indexOf(UChar32 c,
UTextOffset start) const {
if(!UTF_NEED_MULTIPLE_UCHAR(c)) {
return doIndexOf((UChar)c, start, fLength - start);
} else {
UChar buffer[UTF_MAX_CHAR_LENGTH];
int32_t length = 0;
UTF_APPEND_CHAR_UNSAFE(buffer, length, c);
return indexOf(buffer, length, start);
}
}
inline UTextOffset
UnicodeString::indexOf(UChar c,
UTextOffset start,
int32_t length) const
{ return doIndexOf(c, start, length); }
inline UTextOffset
UnicodeString::indexOf(UChar32 c,
UTextOffset start,
int32_t length) const {
if(!UTF_NEED_MULTIPLE_UCHAR(c)) {
return doIndexOf((UChar)c, start, length);
} else {
UChar buffer[UTF_MAX_CHAR_LENGTH];
int32_t cLength = 0;
UTF_APPEND_CHAR_UNSAFE(buffer, cLength, c);
return indexOf(buffer, cLength, start, length);
}
}
inline UTextOffset
UnicodeString::lastIndexOf(const UnicodeString& text) const
{ return lastIndexOf(text, 0, text.fLength, 0, fLength); }
inline UTextOffset
UnicodeString::lastIndexOf(const UnicodeString& text,
UTextOffset start) const
{ return lastIndexOf(text, 0, text.fLength, start, fLength - start); }
inline UTextOffset
UnicodeString::lastIndexOf(const UnicodeString& text,
UTextOffset start,
int32_t length) const
{ return lastIndexOf(text, 0, text.fLength, start, length); }
inline UTextOffset
UnicodeString::lastIndexOf(const UnicodeString& srcText,
UTextOffset srcStart,
int32_t srcLength,
UTextOffset start,
int32_t length) const
{
if(!srcText.isBogus()) {
srcText.pinIndices(srcStart, srcLength);
if(srcLength > 0) {
return lastIndexOf(srcText.getArrayStart(), srcStart, srcLength, start, length);
}
}
return -1;
}
inline UTextOffset
UnicodeString::lastIndexOf(const UChar *srcChars,
int32_t srcLength,
UTextOffset start) const
{ return lastIndexOf(srcChars, 0, srcLength, start, fLength - start); }
inline UTextOffset
UnicodeString::lastIndexOf(const UChar *srcChars,
int32_t srcLength,
UTextOffset start,
int32_t length) const
{ return lastIndexOf(srcChars, 0, srcLength, start, length); }
inline UTextOffset
UnicodeString::lastIndexOf(UChar c) const
{ return doLastIndexOf(c, 0, fLength); }
inline UTextOffset
UnicodeString::lastIndexOf(UChar32 c) const {
if(!UTF_NEED_MULTIPLE_UCHAR(c)) {
return doLastIndexOf((UChar)c, 0, fLength);
} else {
UChar buffer[UTF_MAX_CHAR_LENGTH];
int32_t count = 0;
UTF_APPEND_CHAR_UNSAFE(buffer, count, c);
return lastIndexOf(buffer, count, 0);
}
}
inline UTextOffset
UnicodeString::lastIndexOf(UChar c,
UTextOffset start) const
{ return doLastIndexOf(c, start, fLength - start); }
inline UTextOffset
UnicodeString::lastIndexOf(UChar32 c,
UTextOffset start) const {
if(!UTF_NEED_MULTIPLE_UCHAR(c)) {
return doLastIndexOf((UChar)c, start, fLength - start);
} else {
UChar buffer[UTF_MAX_CHAR_LENGTH];
int32_t count = 0;
UTF_APPEND_CHAR_UNSAFE(buffer, count, c);
return lastIndexOf(buffer, count, start);
}
}
inline UTextOffset
UnicodeString::lastIndexOf(UChar c,
UTextOffset start,
int32_t length) const
{ return doLastIndexOf(c, start, length); }
inline UTextOffset
UnicodeString::lastIndexOf(UChar32 c,
UTextOffset start,
int32_t length) const {
if(!UTF_NEED_MULTIPLE_UCHAR(c)) {
return doLastIndexOf((UChar)c, start, length);
} else {
UChar buffer[UTF_MAX_CHAR_LENGTH];
int32_t count = 0;
UTF_APPEND_CHAR_UNSAFE(buffer, count, c);
return lastIndexOf(buffer, count, start, length);
}
}
inline bool_t
UnicodeString::startsWith(const UnicodeString& text) const
{ return compare(0, text.fLength, text, 0, text.fLength) == 0; }
inline bool_t
UnicodeString::startsWith(const UnicodeString& srcText,
UTextOffset srcStart,
int32_t srcLength) const
{ return doCompare(0, srcLength, srcText, srcStart, srcLength) == 0; }
inline bool_t
UnicodeString::startsWith(const UChar *srcChars,
int32_t srcLength) const
{ return doCompare(0, srcLength, srcChars, 0, srcLength) == 0; }
inline bool_t
UnicodeString::startsWith(const UChar *srcChars,
UTextOffset srcStart,
int32_t srcLength) const
{ return doCompare(0, srcLength, srcChars, srcStart, srcLength) == 0;}
inline bool_t
UnicodeString::endsWith(const UnicodeString& text) const
{ return doCompare(fLength - text.fLength, text.fLength,
text, 0, text.fLength) == 0; }
inline bool_t
UnicodeString::endsWith(const UnicodeString& srcText,
UTextOffset srcStart,
int32_t srcLength) const
{ return doCompare(fLength - srcLength, srcLength,
srcText, srcStart, srcLength) == 0; }
inline bool_t
UnicodeString::endsWith(const UChar *srcChars,
int32_t srcLength) const
{ return doCompare(fLength - srcLength, srcLength,
srcChars, 0, srcLength) == 0; }
inline bool_t
UnicodeString::endsWith(const UChar *srcChars,
UTextOffset srcStart,
int32_t srcLength) const
{ return doCompare(fLength - srcLength, srcLength,
srcChars, srcStart, srcLength) == 0;}
//========================================
// replace
//========================================
inline UnicodeString&
UnicodeString::replace(UTextOffset start,
int32_t length,
const UnicodeString& srcText)
{ return doReplace(start, length, srcText, 0, srcText.fLength); }
inline UnicodeString&
UnicodeString::replace(UTextOffset start,
int32_t length,
const UnicodeString& srcText,
UTextOffset srcStart,
int32_t srcLength)
{ return doReplace(start, length, srcText, srcStart, srcLength); }
inline UnicodeString&
UnicodeString::replace(UTextOffset start,
int32_t length,
const UChar *srcChars,
int32_t srcLength)
{ return doReplace(start, length, srcChars, 0, srcLength); }
inline UnicodeString&
UnicodeString::replace(UTextOffset start,
int32_t length,
const UChar *srcChars,
UTextOffset srcStart,
int32_t srcLength)
{ return doReplace(start, length, srcChars, srcStart, srcLength); }
inline UnicodeString&
UnicodeString::replace(UTextOffset start,
int32_t length,
UChar srcChar)
{ return doReplace(start, length, &srcChar, 0, 1); }
inline UnicodeString&
UnicodeString::replaceBetween(UTextOffset start,
UTextOffset limit,
const UnicodeString& srcText)
{ return doReplace(start, limit - start, srcText, 0, srcText.fLength); }
inline UnicodeString&
UnicodeString::replaceBetween(UTextOffset start,
UTextOffset limit,
const UnicodeString& srcText,
UTextOffset srcStart,
UTextOffset srcLimit)
{ return doReplace(start, limit - start, srcText, srcStart, srcLimit - srcStart); }
inline UnicodeString&
UnicodeString::findAndReplace(const UnicodeString& oldText,
const UnicodeString& newText)
{ return findAndReplace(0, fLength, oldText, 0, oldText.fLength,
newText, 0, newText.fLength); }
inline UnicodeString&
UnicodeString::findAndReplace(UTextOffset start,
int32_t length,
const UnicodeString& oldText,
const UnicodeString& newText)
{ return findAndReplace(start, length, oldText, 0, oldText.fLength,
newText, 0, newText.fLength); }
// ============================
// extract
// ============================
inline void
UnicodeString::doExtract(UTextOffset start,
int32_t length,
UnicodeString& target) const
{ target.replace(0, target.fLength, *this, start, length); }
inline void
UnicodeString::extract(UTextOffset start,
int32_t length,
UChar *dst,
UTextOffset dstStart) const
{ doExtract(start, length, dst, dstStart); }
inline void
UnicodeString::extract(UTextOffset start,
int32_t length,
UnicodeString& target) const
{ doExtract(start, length, target); }
inline void
UnicodeString::extractBetween(UTextOffset start,
UTextOffset limit,
UChar *dst,
UTextOffset dstStart) const
{ doExtract(start, limit - start, dst, dstStart); }
inline void
UnicodeString::extractBetween(UTextOffset start,
UTextOffset limit,
UnicodeString& target) const
{ doExtract(start, limit - start, target); }
inline UChar
UnicodeString::doCharAt(UTextOffset offset) const
{
if((uint32_t)offset < (uint32_t)fLength) {
return fArray[offset];
} else {
return kInvalidUChar;
}
}
inline UChar
UnicodeString::charAt(UTextOffset offset) const
{ return doCharAt(offset); }
inline UChar
UnicodeString::operator[] (UTextOffset offset) const
{ return doCharAt(offset); }
inline UChar32
UnicodeString::char32At(UTextOffset offset) const
{
if((uint32_t)offset < (uint32_t)fLength) {
UChar32 c;
UTF_GET_CHAR(fArray, 0, offset, fLength, c);
return c;
} else {
return kInvalidUChar;
}
}
inline UTextOffset
UnicodeString::getCharStart(UTextOffset offset) {
if((uint32_t)offset < (uint32_t)fLength) {
UTF_SET_CHAR_START(fArray, 0, offset);
return offset;
} else {
return 0;
}
}
inline UTextOffset
UnicodeString::getCharLimit(UTextOffset offset) {
if((uint32_t)offset < (uint32_t)fLength) {
UTF_SET_CHAR_LIMIT(fArray, 0, offset, fLength);
return offset;
} else {
return fLength;
}
}
inline bool_t
UnicodeString::empty() const
{ return fLength == 0; }
//========================================
// Read-only implementation methods
//========================================
inline int32_t
UnicodeString::length() const
{ return fLength; }
inline int32_t
UnicodeString::hashCode() const
{ return doHashCode(); }
//========================================
// Write alias methods
//========================================
inline UnicodeString&
UnicodeString::operator= (UChar ch)
{ return doReplace(0, fLength, &ch, 0, 1); }
inline UnicodeString&
UnicodeString::setTo(const UnicodeString& srcText,
UTextOffset srcStart,
int32_t srcLength)
{ return doReplace(0, fLength, srcText, srcStart, srcLength); }
inline UnicodeString&
UnicodeString::setTo(const UnicodeString& srcText)
{ return doReplace(0, fLength, srcText, 0, srcText.fLength); }
inline UnicodeString&
UnicodeString::setTo(const UChar *srcChars,
int32_t srcLength)
{ return doReplace(0, fLength, srcChars, 0, srcLength); }
inline UnicodeString&
UnicodeString::setTo(UChar srcChar)
{ return doReplace(0, fLength, &srcChar, 0, 1); }
inline UnicodeString&
UnicodeString::operator+= (UChar ch)
{ return doReplace(fLength, 0, &ch, 0, 1); }
inline UnicodeString&
UnicodeString::operator+= (UChar32 ch) {
UChar buffer[UTF_MAX_CHAR_LENGTH];
int32_t length = 0;
UTF_APPEND_CHAR_UNSAFE(buffer, length, ch);
return doReplace(fLength, 0, buffer, 0, length);
}
inline UnicodeString&
UnicodeString::operator+= (const UnicodeString& srcText)
{ return doReplace(fLength, 0, srcText, 0, srcText.fLength); }
inline UnicodeString&
UnicodeString::append(const UnicodeString& srcText,
UTextOffset srcStart,
int32_t srcLength)
{ return doReplace(fLength, 0, srcText, srcStart, srcLength); }
inline UnicodeString&
UnicodeString::append(const UnicodeString& srcText)
{ return doReplace(fLength, 0, srcText, 0, srcText.fLength); }
inline UnicodeString&
UnicodeString::append(const UChar *srcChars,
UTextOffset srcStart,
int32_t srcLength)
{ return doReplace(fLength, 0, srcChars, srcStart, srcLength); }
inline UnicodeString&
UnicodeString::append(const UChar *srcChars,
int32_t srcLength)
{ return doReplace(fLength, 0, srcChars, 0, srcLength); }
inline UnicodeString&
UnicodeString::append(UChar srcChar)
{ return doReplace(fLength, 0, &srcChar, 0, 1); }
inline UnicodeString&
UnicodeString::append(UChar32 srcChar) {
UChar buffer[UTF_MAX_CHAR_LENGTH];
int32_t length = 0;
UTF_APPEND_CHAR_UNSAFE(buffer, length, srcChar);
return doReplace(fLength, 0, buffer, 0, length);
}
inline UnicodeString&
UnicodeString::insert(UTextOffset start,
const UnicodeString& srcText,
UTextOffset srcStart,
int32_t srcLength)
{ return doReplace(start, 0, srcText, srcStart, srcLength); }
inline UnicodeString&
UnicodeString::insert(UTextOffset start,
const UnicodeString& srcText)
{ return doReplace(start, 0, srcText, 0, srcText.fLength); }
inline UnicodeString&
UnicodeString::insert(UTextOffset start,
const UChar *srcChars,
UTextOffset srcStart,
int32_t srcLength)
{ return doReplace(start, 0, srcChars, srcStart, srcLength); }
inline UnicodeString&
UnicodeString::insert(UTextOffset start,
const UChar *srcChars,
int32_t srcLength)
{ return doReplace(start, 0, srcChars, 0, srcLength); }
inline UnicodeString&
UnicodeString::insert(UTextOffset start,
UChar srcChar)
{ return doReplace(start, 0, &srcChar, 0, 1); }
inline UnicodeString&
UnicodeString::remove(UTextOffset start,
int32_t length)
{ return doReplace(start, length, 0, 0, 0); }
inline UnicodeString&
UnicodeString::remove()
{ return doReplace(0, fLength, 0, 0, 0); }
inline UnicodeString&
UnicodeString::removeBetween(UTextOffset start,
UTextOffset limit)
{ return doReplace(start, limit - start, 0, 0, 0); }
inline bool_t
UnicodeString::truncate(int32_t targetLength)
{
if((uint32_t)targetLength < (uint32_t)fLength) {
fLength = targetLength;
return TRUE;
} else {
return FALSE;
}
}
inline UnicodeString&
UnicodeString::reverse()
{ return doReverse(0, fLength); }
inline UnicodeString&
UnicodeString::reverse(UTextOffset start,
int32_t length)
{ return doReverse(start, length); }
//========================================
// Write implementation methods
//========================================
inline bool_t
UnicodeString::isBogus() const
{ return fFlags & kIsBogus; }
//========================================
// Privates
//========================================
inline void
UnicodeString::pinIndices(UTextOffset& start,
int32_t& length) const
{
// pin indices
if(start < 0) {
start = 0;
} else if(start > fLength) {
start = fLength;
}
if(length < 0) {
length = 0;
} else if(length > (fLength - start)) {
length = (fLength - start);
}
}
inline UChar*
UnicodeString::getArrayStart()
{ return fArray; }
inline const UChar*
UnicodeString::getArrayStart() const
{ return fArray; }
inline int32_t
UnicodeString::getCapacity() const
{ return fCapacity; }
inline void
UnicodeString::releaseArray() {
if((fFlags & kRefCounted) && removeRef() == 0) {
delete [] ((int32_t *)fArray - 1);
}
}
inline int32_t
UnicodeString::addRef()
{ return ++*((int32_t *)fArray - 1); }
inline int32_t
UnicodeString::removeRef()
{ return --*((int32_t *)fArray - 1); }
inline int32_t
UnicodeString::refCount() const
{ return *((int32_t *)fArray - 1); }
inline int32_t
UnicodeString::setRefCount(int32_t count)
{ return (*((int32_t *)fArray - 1) = count); }
// deprecated API - remove later
inline int32_t
UnicodeString::size() const
{ return fLength; }
inline UnicodeString&
UnicodeString::findAndReplace(const UnicodeString& oldText,
const UnicodeString& newText,
UTextOffset start,
int32_t length)
{ return findAndReplace(start, length, oldText, newText); }
inline void*
UnicodeString::operator new(size_t size)
{ return ::operator new(size); }
inline void*
UnicodeString::operator new(size_t,
void *location)
{ return location; }
inline void
UnicodeString::operator delete(void *location)
{ ::operator delete(location); }
//========================================
// Static members
//========================================
//========================================
// class UCharReference
//========================================
class UCharReference
{
public:
UCharReference();
inline UCharReference(UnicodeString *string,
UTextOffset pos);
inline UCharReference(const UCharReference& that);
~UCharReference();
inline UCharReference& operator= (const UCharReference& that);
inline UCharReference& operator= (UChar c);
inline operator UChar();
private:
UnicodeString *fString;
UTextOffset fPos;
};
//========================================
// Inline members
//========================================
inline
UCharReference::UCharReference(UnicodeString *string,
UTextOffset pos)
: fString(string), fPos(pos)
{}
inline
UCharReference::UCharReference(const UCharReference& that)
{ this->operator=(that); }
inline
UCharReference::~UCharReference()
{}
inline UCharReference&
UCharReference::operator= (const UCharReference& that)
{ fString->setCharAt(fPos, that.fString->charAt(that.fPos)); return *this; }
inline UCharReference&
UCharReference::operator= (UChar c)
{ fString->setCharAt(fPos, c); return *this; }
inline
UCharReference::operator UChar()
{ return fString->charAt(fPos); }
#endif
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