include has been moved to unicode/ustream.h */
/**
* Constant to be used in the UnicodeString(char *, int32_t, EInvariant) constructor
* which constructs a Unicode string from an invariant-character char * string.
* About invariant characters see utypes.h.
* This constructor has no runtime dependency on conversion code and is
* therefore recommended over ones taking a charset name string
* (where the empty string "" indicates invariant-character conversion).
*
* @stable ICU 3.2
*/
#define US_INV icu::UnicodeString::kInvariant
/**
* 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
* For an overview of Unicode strings in C and C++ see the
* User Guide Strings chapter. In ICU, a Unicode string consists of 16-bit Unicode code units.
* A Unicode character may be stored with either one code unit
* (the most common case) or with a matched pair of special code units
* ("surrogates"). The data type for code units is UChar.
* For single-character handling, a Unicode character code point is a value
* in the range 0..0x10ffff. ICU uses the UChar32 type for code points. Indexes and offsets into and lengths of strings always count code units, not code points.
* This is the same as with multi-byte char* strings in traditional string handling.
* Operations on partial strings typically do not test for code point boundaries.
* If necessary, the user needs to take care of such boundaries by testing for the code unit
* values or by using functions like
* UnicodeString::getChar32Start() and UnicodeString::getChar32Limit()
* (or, in C, the equivalent macros U16_SET_CP_START() and U16_SET_CP_LIMIT(), see utf.h). UnicodeString uses several storage methods.
* String contents can be stored inside the UnicodeString object itself,
* in an allocated and shared buffer, or in an outside buffer that is "aliased".
* Most of this is done transparently, but careful aliasing in particular provides
* significant performance improvements.
* Also, the internal buffer is accessible via special functions.
* For details see the
* User Guide Strings chapter.NUL, 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.
* @stable ICU 2.0
*/
#if defined(U_DECLARE_UTF16)
# define UNICODE_STRING(cs, _length) icu::UnicodeString(TRUE, (const UChar *)U_DECLARE_UTF16(cs), _length)
#elif U_SIZEOF_WCHAR_T==U_SIZEOF_UCHAR && (U_CHARSET_FAMILY==U_ASCII_FAMILY || (U_SIZEOF_UCHAR == 2 && defined(U_WCHAR_IS_UTF16)))
# define UNICODE_STRING(cs, _length) icu::UnicodeString(TRUE, (const UChar *)L ## cs, _length)
#elif U_SIZEOF_UCHAR==1 && U_CHARSET_FAMILY==U_ASCII_FAMILY
# define UNICODE_STRING(cs, _length) icu::UnicodeString(TRUE, (const UChar *)cs, _length)
#else
# define UNICODE_STRING(cs, _length) icu::UnicodeString(cs, _length, US_INV)
#endif
/**
* 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 improved 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.
* @stable ICU 2.0
*/
#define UNICODE_STRING_SIMPLE(cs) UNICODE_STRING(cs, -1)
/**
* \def UNISTR_FROM_CHAR_EXPLICIT
* This can be defined to be empty or "explicit".
* If explicit, then the UnicodeString(UChar) and UnicodeString(UChar32)
* constructors are marked as explicit, preventing their inadvertent use.
* @draft ICU 49
*/
#ifndef UNISTR_FROM_CHAR_EXPLICIT
# if defined(U_COMBINED_IMPLEMENTATION) || defined(U_COMMON_IMPLEMENTATION) || defined(U_I18N_IMPLEMENTATION) || defined(U_IO_IMPLEMENTATION)
// Auto-"explicit" in ICU library code.
# define UNISTR_FROM_CHAR_EXPLICIT explicit
# else
// Empty by default for source code compatibility.
# define UNISTR_FROM_CHAR_EXPLICIT
# endif
#endif
/**
* \def UNISTR_FROM_STRING_EXPLICIT
* This can be defined to be empty or "explicit".
* If explicit, then the UnicodeString(const char *) and UnicodeString(const UChar *)
* constructors are marked as explicit, preventing their inadvertent use.
*
* In particular, this helps prevent accidentally depending on ICU conversion code
* by passing a string literal into an API with a const UnicodeString & parameter.
* @draft ICU 49
*/
#ifndef UNISTR_FROM_STRING_EXPLICIT
# if defined(U_COMBINED_IMPLEMENTATION) || defined(U_COMMON_IMPLEMENTATION) || defined(U_I18N_IMPLEMENTATION) || defined(U_IO_IMPLEMENTATION)
// Auto-"explicit" in ICU library code.
# define UNISTR_FROM_STRING_EXPLICIT explicit
# else
// Empty by default for source code compatibility.
# define UNISTR_FROM_STRING_EXPLICIT
# endif
#endif
/**
* UnicodeString is a string class that stores Unicode characters directly and provides
* similar functionality as the Java String and StringBuffer classes.
* It is a concrete implementation of the abstract class Replaceable (for transliteration).
*
* The UnicodeString class is not suitable for subclassing.
*
* text, FALSE otherwise
* @stable ICU 2.0
*/
inline UBool 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 this are bitwise
* less than the characters in text, FALSE otherwise
* @stable ICU 2.0
*/
inline UBool 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 this are bitwise
* greater than or equal to the characters in text, FALSE otherwise
* @stable ICU 2.0
*/
inline UBool 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 this are bitwise
* less than or equal to the characters in text, FALSE otherwise
* @stable ICU 2.0
*/
inline UBool operator<= (const UnicodeString& text) const;
/**
* Compare the characters bitwise in this UnicodeString to
* the characters in text.
* @param text The UnicodeString to compare to this one.
* @return The result of bitwise character comparison: 0 if this
* contains the same characters as text, -1 if the characters in
* this are bitwise less than the characters in text, +1 if the
* characters in this are bitwise greater than the characters
* in text.
* @stable ICU 2.0
*/
inline int8_t compare(const UnicodeString& text) const;
/**
* Compare the characters bitwise in the range
* [start, start + length) with the characters
* in text
* @param start the offset at which the compare operation begins
* @param length the number of characters of text to compare.
* @param text the other text to be compared against this string.
* @return The result of bitwise character comparison: 0 if this
* contains the same characters as text, -1 if the characters in
* this are bitwise less than the characters in text, +1 if the
* characters in this are bitwise greater than the characters
* in text.
* @stable ICU 2.0
*/
inline int8_t compare(int32_t start,
int32_t length,
const UnicodeString& text) const;
/**
* Compare the characters bitwise in the range
* [start, start + length) with the characters
* in srcText in the range
* [srcStart, srcStart + srcLength).
* @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 srcText to start comparison
* @param srcLength the number of characters in src to compare
* @return The result of bitwise character comparison: 0 if this
* contains the same characters as srcText, -1 if the characters in
* this are bitwise less than the characters in srcText, +1 if the
* characters in this are bitwise greater than the characters
* in srcText.
* @stable ICU 2.0
*/
inline int8_t compare(int32_t start,
int32_t length,
const UnicodeString& srcText,
int32_t srcStart,
int32_t srcLength) const;
/**
* Compare the characters bitwise in this UnicodeString with the first
* srcLength characters in srcChars.
* @param srcChars The characters to compare to this UnicodeString.
* @param srcLength the number of characters in srcChars to compare
* @return The result of bitwise character comparison: 0 if this
* contains the same characters as srcChars, -1 if the characters in
* this are bitwise less than the characters in srcChars, +1 if the
* characters in this are bitwise greater than the characters
* in srcChars.
* @stable ICU 2.0
*/
inline int8_t compare(const UChar *srcChars,
int32_t srcLength) const;
/**
* Compare the characters bitwise in the range
* [start, start + length) with the first
* length characters in srcChars
* @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 this
* contains the same characters as srcChars, -1 if the characters in
* this are bitwise less than the characters in srcChars, +1 if the
* characters in this are bitwise greater than the characters
* in srcChars.
* @stable ICU 2.0
*/
inline int8_t compare(int32_t start,
int32_t length,
const UChar *srcChars) const;
/**
* Compare the characters bitwise in the range
* [start, start + length) with the characters
* in srcChars in the range
* [srcStart, srcStart + srcLength).
* @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 srcChars to start comparison
* @param srcLength the number of characters in srcChars to compare
* @return The result of bitwise character comparison: 0 if this
* contains the same characters as srcChars, -1 if the characters in
* this are bitwise less than the characters in srcChars, +1 if the
* characters in this are bitwise greater than the characters
* in srcChars.
* @stable ICU 2.0
*/
inline int8_t compare(int32_t start,
int32_t length,
const UChar *srcChars,
int32_t srcStart,
int32_t srcLength) const;
/**
* Compare the characters bitwise in the range
* [start, limit) with the characters
* in srcText in the range
* [srcStart, srcLimit).
* @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 srcText to start comparison
* @param srcLimit the offset into srcText to limit comparison
* @return The result of bitwise character comparison: 0 if this
* contains the same characters as srcText, -1 if the characters in
* this are bitwise less than the characters in srcText, +1 if the
* characters in this are bitwise greater than the characters
* in srcText.
* @stable ICU 2.0
*/
inline int8_t compareBetween(int32_t start,
int32_t limit,
const UnicodeString& srcText,
int32_t srcStart,
int32_t srcLimit) const;
/**
* Compare two Unicode strings in code point order.
* The result may be different from the results of compare(), operator<, etc.
* if supplementary characters are present:
*
* In UTF-16, supplementary characters (with code points U+10000 and above) are
* stored with pairs of surrogate code units. These have values from 0xd800 to 0xdfff,
* which means that they compare as less than some other BMP characters like U+feff.
* This function compares Unicode strings in code point order.
* If either of the UTF-16 strings is malformed (i.e., it contains unpaired surrogates), then the result is not defined.
*
* @param text Another string to compare this one to.
* @return a negative/zero/positive integer corresponding to whether
* this string is less than/equal to/greater than the second one
* in code point order
* @stable ICU 2.0
*/
inline int8_t compareCodePointOrder(const UnicodeString& text) const;
/**
* Compare two Unicode strings in code point order.
* The result may be different from the results of compare(), operator<, etc.
* if supplementary characters are present:
*
* In UTF-16, supplementary characters (with code points U+10000 and above) are
* stored with pairs of surrogate code units. These have values from 0xd800 to 0xdfff,
* which means that they compare as less than some other BMP characters like U+feff.
* This function compares Unicode strings in code point order.
* If either of the UTF-16 strings is malformed (i.e., it contains unpaired surrogates), then the result is not defined.
*
* @param start The start offset in this string at which the compare operation begins.
* @param length The number of code units from this string to compare.
* @param srcText Another string to compare this one to.
* @return a negative/zero/positive integer corresponding to whether
* this string is less than/equal to/greater than the second one
* in code point order
* @stable ICU 2.0
*/
inline int8_t compareCodePointOrder(int32_t start,
int32_t length,
const UnicodeString& srcText) const;
/**
* Compare two Unicode strings in code point order.
* The result may be different from the results of compare(), operator<, etc.
* if supplementary characters are present:
*
* In UTF-16, supplementary characters (with code points U+10000 and above) are
* stored with pairs of surrogate code units. These have values from 0xd800 to 0xdfff,
* which means that they compare as less than some other BMP characters like U+feff.
* This function compares Unicode strings in code point order.
* If either of the UTF-16 strings is malformed (i.e., it contains unpaired surrogates), then the result is not defined.
*
* @param start The start offset in this string at which the compare operation begins.
* @param length The number of code units from this string to compare.
* @param srcText Another string to compare this one to.
* @param srcStart The start offset in that string at which the compare operation begins.
* @param srcLength The number of code units from that string to compare.
* @return a negative/zero/positive integer corresponding to whether
* this string is less than/equal to/greater than the second one
* in code point order
* @stable ICU 2.0
*/
inline int8_t compareCodePointOrder(int32_t start,
int32_t length,
const UnicodeString& srcText,
int32_t srcStart,
int32_t srcLength) const;
/**
* Compare two Unicode strings in code point order.
* The result may be different from the results of compare(), operator<, etc.
* if supplementary characters are present:
*
* In UTF-16, supplementary characters (with code points U+10000 and above) are
* stored with pairs of surrogate code units. These have values from 0xd800 to 0xdfff,
* which means that they compare as less than some other BMP characters like U+feff.
* This function compares Unicode strings in code point order.
* If either of the UTF-16 strings is malformed (i.e., it contains unpaired surrogates), then the result is not defined.
*
* @param srcChars A pointer to another string to compare this one to.
* @param srcLength The number of code units from that string to compare.
* @return a negative/zero/positive integer corresponding to whether
* this string is less than/equal to/greater than the second one
* in code point order
* @stable ICU 2.0
*/
inline int8_t compareCodePointOrder(const UChar *srcChars,
int32_t srcLength) const;
/**
* Compare two Unicode strings in code point order.
* The result may be different from the results of compare(), operator<, etc.
* if supplementary characters are present:
*
* In UTF-16, supplementary characters (with code points U+10000 and above) are
* stored with pairs of surrogate code units. These have values from 0xd800 to 0xdfff,
* which means that they compare as less than some other BMP characters like U+feff.
* This function compares Unicode strings in code point order.
* If either of the UTF-16 strings is malformed (i.e., it contains unpaired surrogates), then the result is not defined.
*
* @param start The start offset in this string at which the compare operation begins.
* @param length The number of code units from this string to compare.
* @param srcChars A pointer to another string to compare this one to.
* @return a negative/zero/positive integer corresponding to whether
* this string is less than/equal to/greater than the second one
* in code point order
* @stable ICU 2.0
*/
inline int8_t compareCodePointOrder(int32_t start,
int32_t length,
const UChar *srcChars) const;
/**
* Compare two Unicode strings in code point order.
* The result may be different from the results of compare(), operator<, etc.
* if supplementary characters are present:
*
* In UTF-16, supplementary characters (with code points U+10000 and above) are
* stored with pairs of surrogate code units. These have values from 0xd800 to 0xdfff,
* which means that they compare as less than some other BMP characters like U+feff.
* This function compares Unicode strings in code point order.
* If either of the UTF-16 strings is malformed (i.e., it contains unpaired surrogates), then the result is not defined.
*
* @param start The start offset in this string at which the compare operation begins.
* @param length The number of code units from this string to compare.
* @param srcChars A pointer to another string to compare this one to.
* @param srcStart The start offset in that string at which the compare operation begins.
* @param srcLength The number of code units from that string to compare.
* @return a negative/zero/positive integer corresponding to whether
* this string is less than/equal to/greater than the second one
* in code point order
* @stable ICU 2.0
*/
inline int8_t compareCodePointOrder(int32_t start,
int32_t length,
const UChar *srcChars,
int32_t srcStart,
int32_t srcLength) const;
/**
* Compare two Unicode strings in code point order.
* The result may be different from the results of compare(), operator<, etc.
* if supplementary characters are present:
*
* In UTF-16, supplementary characters (with code points U+10000 and above) are
* stored with pairs of surrogate code units. These have values from 0xd800 to 0xdfff,
* which means that they compare as less than some other BMP characters like U+feff.
* This function compares Unicode strings in code point order.
* If either of the UTF-16 strings is malformed (i.e., it contains unpaired surrogates), then the result is not defined.
*
* @param start The start offset in this string at which the compare operation begins.
* @param limit The offset after the last code unit from this string to compare.
* @param srcText Another string to compare this one to.
* @param srcStart The start offset in that string at which the compare operation begins.
* @param srcLimit The offset after the last code unit from that string to compare.
* @return a negative/zero/positive integer corresponding to whether
* this string is less than/equal to/greater than the second one
* in code point order
* @stable ICU 2.0
*/
inline int8_t compareCodePointOrderBetween(int32_t start,
int32_t limit,
const UnicodeString& srcText,
int32_t srcStart,
int32_t srcLimit) const;
/**
* Compare two strings case-insensitively using full case folding.
* This is equivalent to this->foldCase(options).compare(text.foldCase(options)).
*
* @param text Another string to compare this one to.
* @param options A bit set of options:
* - U_FOLD_CASE_DEFAULT or 0 is used for default options:
* Comparison in code unit order with default case folding.
*
* - U_COMPARE_CODE_POINT_ORDER
* Set to choose code point order instead of code unit order
* (see u_strCompare for details).
*
* - U_FOLD_CASE_EXCLUDE_SPECIAL_I
*
* @return A negative, zero, or positive integer indicating the comparison result.
* @stable ICU 2.0
*/
inline int8_t caseCompare(const UnicodeString& text, uint32_t options) const;
/**
* Compare two strings case-insensitively using full case folding.
* This is equivalent to this->foldCase(options).compare(srcText.foldCase(options)).
*
* @param start The start offset in this string at which the compare operation begins.
* @param length The number of code units from this string to compare.
* @param srcText Another string to compare this one to.
* @param options A bit set of options:
* - U_FOLD_CASE_DEFAULT or 0 is used for default options:
* Comparison in code unit order with default case folding.
*
* - U_COMPARE_CODE_POINT_ORDER
* Set to choose code point order instead of code unit order
* (see u_strCompare for details).
*
* - U_FOLD_CASE_EXCLUDE_SPECIAL_I
*
* @return A negative, zero, or positive integer indicating the comparison result.
* @stable ICU 2.0
*/
inline int8_t caseCompare(int32_t start,
int32_t length,
const UnicodeString& srcText,
uint32_t options) const;
/**
* Compare two strings case-insensitively using full case folding.
* This is equivalent to this->foldCase(options).compare(srcText.foldCase(options)).
*
* @param start The start offset in this string at which the compare operation begins.
* @param length The number of code units from this string to compare.
* @param srcText Another string to compare this one to.
* @param srcStart The start offset in that string at which the compare operation begins.
* @param srcLength The number of code units from that string to compare.
* @param options A bit set of options:
* - U_FOLD_CASE_DEFAULT or 0 is used for default options:
* Comparison in code unit order with default case folding.
*
* - U_COMPARE_CODE_POINT_ORDER
* Set to choose code point order instead of code unit order
* (see u_strCompare for details).
*
* - U_FOLD_CASE_EXCLUDE_SPECIAL_I
*
* @return A negative, zero, or positive integer indicating the comparison result.
* @stable ICU 2.0
*/
inline int8_t caseCompare(int32_t start,
int32_t length,
const UnicodeString& srcText,
int32_t srcStart,
int32_t srcLength,
uint32_t options) const;
/**
* Compare two strings case-insensitively using full case folding.
* This is equivalent to this->foldCase(options).compare(srcChars.foldCase(options)).
*
* @param srcChars A pointer to another string to compare this one to.
* @param srcLength The number of code units from that string to compare.
* @param options A bit set of options:
* - U_FOLD_CASE_DEFAULT or 0 is used for default options:
* Comparison in code unit order with default case folding.
*
* - U_COMPARE_CODE_POINT_ORDER
* Set to choose code point order instead of code unit order
* (see u_strCompare for details).
*
* - U_FOLD_CASE_EXCLUDE_SPECIAL_I
*
* @return A negative, zero, or positive integer indicating the comparison result.
* @stable ICU 2.0
*/
inline int8_t caseCompare(const UChar *srcChars,
int32_t srcLength,
uint32_t options) const;
/**
* Compare two strings case-insensitively using full case folding.
* This is equivalent to this->foldCase(options).compare(srcChars.foldCase(options)).
*
* @param start The start offset in this string at which the compare operation begins.
* @param length The number of code units from this string to compare.
* @param srcChars A pointer to another string to compare this one to.
* @param options A bit set of options:
* - U_FOLD_CASE_DEFAULT or 0 is used for default options:
* Comparison in code unit order with default case folding.
*
* - U_COMPARE_CODE_POINT_ORDER
* Set to choose code point order instead of code unit order
* (see u_strCompare for details).
*
* - U_FOLD_CASE_EXCLUDE_SPECIAL_I
*
* @return A negative, zero, or positive integer indicating the comparison result.
* @stable ICU 2.0
*/
inline int8_t caseCompare(int32_t start,
int32_t length,
const UChar *srcChars,
uint32_t options) const;
/**
* Compare two strings case-insensitively using full case folding.
* This is equivalent to this->foldCase(options).compare(srcChars.foldCase(options)).
*
* @param start The start offset in this string at which the compare operation begins.
* @param length The number of code units from this string to compare.
* @param srcChars A pointer to another string to compare this one to.
* @param srcStart The start offset in that string at which the compare operation begins.
* @param srcLength The number of code units from that string to compare.
* @param options A bit set of options:
* - U_FOLD_CASE_DEFAULT or 0 is used for default options:
* Comparison in code unit order with default case folding.
*
* - U_COMPARE_CODE_POINT_ORDER
* Set to choose code point order instead of code unit order
* (see u_strCompare for details).
*
* - U_FOLD_CASE_EXCLUDE_SPECIAL_I
*
* @return A negative, zero, or positive integer indicating the comparison result.
* @stable ICU 2.0
*/
inline int8_t caseCompare(int32_t start,
int32_t length,
const UChar *srcChars,
int32_t srcStart,
int32_t srcLength,
uint32_t options) const;
/**
* Compare two strings case-insensitively using full case folding.
* This is equivalent to this->foldCase(options).compareBetween(text.foldCase(options)).
*
* @param start The start offset in this string at which the compare operation begins.
* @param limit The offset after the last code unit from this string to compare.
* @param srcText Another string to compare this one to.
* @param srcStart The start offset in that string at which the compare operation begins.
* @param srcLimit The offset after the last code unit from that string to compare.
* @param options A bit set of options:
* - U_FOLD_CASE_DEFAULT or 0 is used for default options:
* Comparison in code unit order with default case folding.
*
* - U_COMPARE_CODE_POINT_ORDER
* Set to choose code point order instead of code unit order
* (see u_strCompare for details).
*
* - U_FOLD_CASE_EXCLUDE_SPECIAL_I
*
* @return A negative, zero, or positive integer indicating the comparison result.
* @stable ICU 2.0
*/
inline int8_t caseCompareBetween(int32_t start,
int32_t limit,
const UnicodeString& srcText,
int32_t srcStart,
int32_t srcLimit,
uint32_t options) const;
/**
* Determine if this starts with the characters in text
* @param text The text to match.
* @return TRUE if this starts with the characters in text,
* FALSE otherwise
* @stable ICU 2.0
*/
inline UBool startsWith(const UnicodeString& text) const;
/**
* Determine if this starts with the characters in srcText
* in the range [srcStart, srcStart + srcLength).
* @param srcText The text to match.
* @param srcStart the offset into srcText to start matching
* @param srcLength the number of characters in srcText to match
* @return TRUE if this starts with the characters in text,
* FALSE otherwise
* @stable ICU 2.0
*/
inline UBool startsWith(const UnicodeString& srcText,
int32_t srcStart,
int32_t srcLength) const;
/**
* Determine if this starts with the characters in srcChars
* @param srcChars The characters to match.
* @param srcLength the number of characters in srcChars
* @return TRUE if this starts with the characters in srcChars,
* FALSE otherwise
* @stable ICU 2.0
*/
inline UBool startsWith(const UChar *srcChars,
int32_t srcLength) const;
/**
* Determine if this ends with the characters in srcChars
* in the range [srcStart, srcStart + srcLength).
* @param srcChars The characters to match.
* @param srcStart the offset into srcText to start matching
* @param srcLength the number of characters in srcChars to match
* @return TRUE if this ends with the characters in srcChars, FALSE otherwise
* @stable ICU 2.0
*/
inline UBool startsWith(const UChar *srcChars,
int32_t srcStart,
int32_t srcLength) const;
/**
* Determine if this ends with the characters in text
* @param text The text to match.
* @return TRUE if this ends with the characters in text,
* FALSE otherwise
* @stable ICU 2.0
*/
inline UBool endsWith(const UnicodeString& text) const;
/**
* Determine if this ends with the characters in srcText
* in the range [srcStart, srcStart + srcLength).
* @param srcText The text to match.
* @param srcStart the offset into srcText to start matching
* @param srcLength the number of characters in srcText to match
* @return TRUE if this ends with the characters in text,
* FALSE otherwise
* @stable ICU 2.0
*/
inline UBool endsWith(const UnicodeString& srcText,
int32_t srcStart,
int32_t srcLength) const;
/**
* Determine if this ends with the characters in srcChars
* @param srcChars The characters to match.
* @param srcLength the number of characters in srcChars
* @return TRUE if this ends with the characters in srcChars,
* FALSE otherwise
* @stable ICU 2.0
*/
inline UBool endsWith(const UChar *srcChars,
int32_t srcLength) const;
/**
* Determine if this ends with the characters in srcChars
* in the range [srcStart, srcStart + srcLength).
* @param srcChars The characters to match.
* @param srcStart the offset into srcText to start matching
* @param srcLength the number of characters in srcChars to match
* @return TRUE if this ends with the characters in srcChars,
* FALSE otherwise
* @stable ICU 2.0
*/
inline UBool endsWith(const UChar *srcChars,
int32_t srcStart,
int32_t srcLength) const;
/* Searching - bitwise only */
/**
* Locate in this the first occurrence of the characters in text,
* using bitwise comparison.
* @param text The text to search for.
* @return The offset into this of the start of text,
* or -1 if not found.
* @stable ICU 2.0
*/
inline int32_t indexOf(const UnicodeString& text) const;
/**
* Locate in this the first occurrence of the characters in text
* starting at offset start, 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 text,
* or -1 if not found.
* @stable ICU 2.0
*/
inline int32_t indexOf(const UnicodeString& text,
int32_t start) const;
/**
* Locate in this the first occurrence in the range
* [start, start + length) of the characters
* in text, 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 text,
* or -1 if not found.
* @stable ICU 2.0
*/
inline int32_t indexOf(const UnicodeString& text,
int32_t start,
int32_t length) const;
/**
* Locate in this the first occurrence in the range
* [start, start + length) of the characters
* in srcText in the range
* [srcStart, srcStart + srcLength),
* using bitwise comparison.
* @param srcText The text to search for.
* @param srcStart the offset into srcText at which
* to start matching
* @param srcLength the number of characters in srcText 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 text,
* or -1 if not found.
* @stable ICU 2.0
*/
inline int32_t indexOf(const UnicodeString& srcText,
int32_t srcStart,
int32_t srcLength,
int32_t start,
int32_t length) const;
/**
* Locate in this the first occurrence of the characters in
* srcChars
* starting at offset start, using bitwise comparison.
* @param srcChars The text to search for.
* @param srcLength the number of characters in srcChars to match
* @param start the offset into this at which to start matching
* @return The offset into this of the start of text,
* or -1 if not found.
* @stable ICU 2.0
*/
inline int32_t indexOf(const UChar *srcChars,
int32_t srcLength,
int32_t start) const;
/**
* Locate in this the first occurrence in the range
* [start, start + length) of the characters
* in srcChars, using bitwise comparison.
* @param srcChars The text to search for.
* @param srcLength the number of characters in srcChars
* @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 srcChars,
* or -1 if not found.
* @stable ICU 2.0
*/
inline int32_t indexOf(const UChar *srcChars,
int32_t srcLength,
int32_t start,
int32_t length) const;
/**
* Locate in this the first occurrence in the range
* [start, start + length) of the characters
* in srcChars in the range
* [srcStart, srcStart + srcLength),
* using bitwise comparison.
* @param srcChars The text to search for.
* @param srcStart the offset into srcChars at which
* to start matching
* @param srcLength the number of characters in srcChars 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 text,
* or -1 if not found.
* @stable ICU 2.0
*/
int32_t indexOf(const UChar *srcChars,
int32_t srcStart,
int32_t srcLength,
int32_t start,
int32_t length) const;
/**
* Locate in this the first occurrence of the BMP code point c,
* using bitwise comparison.
* @param c The code unit to search for.
* @return The offset into this of c, or -1 if not found.
* @stable ICU 2.0
*/
inline int32_t indexOf(UChar c) const;
/**
* Locate in this the first occurrence of the code point c,
* using bitwise comparison.
*
* @param c The code point to search for.
* @return The offset into this of c, or -1 if not found.
* @stable ICU 2.0
*/
inline int32_t indexOf(UChar32 c) const;
/**
* Locate in this the first occurrence of the BMP code point c,
* starting at offset start, 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 c, or -1 if not found.
* @stable ICU 2.0
*/
inline int32_t indexOf(UChar c,
int32_t start) const;
/**
* Locate in this the first occurrence of the code point c
* starting at offset start, 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 c, or -1 if not found.
* @stable ICU 2.0
*/
inline int32_t indexOf(UChar32 c,
int32_t start) const;
/**
* Locate in this the first occurrence of the BMP code point c
* in the range [start, start + length),
* 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 c, or -1 if not found.
* @stable ICU 2.0
*/
inline int32_t indexOf(UChar c,
int32_t start,
int32_t length) const;
/**
* Locate in this the first occurrence of the code point c
* in the range [start, start + length),
* 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 c, or -1 if not found.
* @stable ICU 2.0
*/
inline int32_t indexOf(UChar32 c,
int32_t start,
int32_t length) const;
/**
* Locate in this the last occurrence of the characters in text,
* using bitwise comparison.
* @param text The text to search for.
* @return The offset into this of the start of text,
* or -1 if not found.
* @stable ICU 2.0
*/
inline int32_t lastIndexOf(const UnicodeString& text) const;
/**
* Locate in this the last occurrence of the characters in text
* starting at offset start, 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 text,
* or -1 if not found.
* @stable ICU 2.0
*/
inline int32_t lastIndexOf(const UnicodeString& text,
int32_t start) const;
/**
* Locate in this the last occurrence in the range
* [start, start + length) of the characters
* in text, 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 text,
* or -1 if not found.
* @stable ICU 2.0
*/
inline int32_t lastIndexOf(const UnicodeString& text,
int32_t start,
int32_t length) const;
/**
* Locate in this the last occurrence in the range
* [start, start + length) of the characters
* in srcText in the range
* [srcStart, srcStart + srcLength),
* using bitwise comparison.
* @param srcText The text to search for.
* @param srcStart the offset into srcText at which
* to start matching
* @param srcLength the number of characters in srcText 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 text,
* or -1 if not found.
* @stable ICU 2.0
*/
inline int32_t lastIndexOf(const UnicodeString& srcText,
int32_t srcStart,
int32_t srcLength,
int32_t start,
int32_t length) const;
/**
* Locate in this the last occurrence of the characters in srcChars
* starting at offset start, using bitwise comparison.
* @param srcChars The text to search for.
* @param srcLength the number of characters in srcChars to match
* @param start the offset into this at which to start matching
* @return The offset into this of the start of text,
* or -1 if not found.
* @stable ICU 2.0
*/
inline int32_t lastIndexOf(const UChar *srcChars,
int32_t srcLength,
int32_t start) const;
/**
* Locate in this the last occurrence in the range
* [start, start + length) of the characters
* in srcChars, using bitwise comparison.
* @param srcChars The text to search for.
* @param srcLength the number of characters in srcChars
* @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 srcChars,
* or -1 if not found.
* @stable ICU 2.0
*/
inline int32_t lastIndexOf(const UChar *srcChars,
int32_t srcLength,
int32_t start,
int32_t length) const;
/**
* Locate in this the last occurrence in the range
* [start, start + length) of the characters
* in srcChars in the range
* [srcStart, srcStart + srcLength),
* using bitwise comparison.
* @param srcChars The text to search for.
* @param srcStart the offset into srcChars at which
* to start matching
* @param srcLength the number of characters in srcChars 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 text,
* or -1 if not found.
* @stable ICU 2.0
*/
int32_t lastIndexOf(const UChar *srcChars,
int32_t srcStart,
int32_t srcLength,
int32_t start,
int32_t length) const;
/**
* Locate in this the last occurrence of the BMP code point c,
* using bitwise comparison.
* @param c The code unit to search for.
* @return The offset into this of c, or -1 if not found.
* @stable ICU 2.0
*/
inline int32_t lastIndexOf(UChar c) const;
/**
* Locate in this the last occurrence of the code point c,
* using bitwise comparison.
*
* @param c The code point to search for.
* @return The offset into this of c, or -1 if not found.
* @stable ICU 2.0
*/
inline int32_t lastIndexOf(UChar32 c) const;
/**
* Locate in this the last occurrence of the BMP code point c
* starting at offset start, 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 c, or -1 if not found.
* @stable ICU 2.0
*/
inline int32_t lastIndexOf(UChar c,
int32_t start) const;
/**
* Locate in this the last occurrence of the code point c
* starting at offset start, 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 c, or -1 if not found.
* @stable ICU 2.0
*/
inline int32_t lastIndexOf(UChar32 c,
int32_t start) const;
/**
* Locate in this the last occurrence of the BMP code point c
* in the range [start, start + length),
* 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 c, or -1 if not found.
* @stable ICU 2.0
*/
inline int32_t lastIndexOf(UChar c,
int32_t start,
int32_t length) const;
/**
* Locate in this the last occurrence of the code point c
* in the range [start, start + length),
* 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 c, or -1 if not found.
* @stable ICU 2.0
*/
inline int32_t lastIndexOf(UChar32 c,
int32_t start,
int32_t length) const;
/* Character access */
/**
* Return the code unit at offset offset.
* If the offset is not valid (0..length()-1) then U+ffff is returned.
* @param offset a valid offset into the text
* @return the code unit at offset offset
* or 0xffff if the offset is not valid for this string
* @stable ICU 2.0
*/
inline UChar charAt(int32_t offset) const;
/**
* Return the code unit at offset offset.
* If the offset is not valid (0..length()-1) then U+ffff is returned.
* @param offset a valid offset into the text
* @return the code unit at offset offset
* @stable ICU 2.0
*/
inline UChar operator[] (int32_t offset) const;
/**
* Return the code point that contains the code unit
* at offset offset.
* If the offset is not valid (0..length()-1) then U+ffff is returned.
* @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
* @return the code point of text at offset
* or 0xffff if the offset is not valid for this string
* @stable ICU 2.0
*/
UChar32 char32At(int32_t 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
* @see U16_SET_CP_START
* @stable ICU 2.0
*/
int32_t getChar32Start(int32_t offset) const;
/**
* 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
* @see U16_SET_CP_LIMIT
* @stable ICU 2.0
*/
int32_t getChar32Limit(int32_t offset) const;
/**
* Move the code unit index along the string by delta code points.
* Interpret the input index as a code unit-based offset into the string,
* move the index forward or backward by delta code points, and
* return the resulting index.
* The input index should point to the first code unit of a code point,
* if there is more than one.
*
* Both input and output indexes are code unit-based as for all
* string indexes/offsets in ICU (and other libraries, like MBCS char*).
* If delta<0 then the index is moved backward (toward the start of the string).
* If delta>0 then the index is moved forward (toward the end of the string).
*
* This behaves like CharacterIterator::move32(delta, kCurrent).
*
* Behavior for out-of-bounds indexes:
* moveIndex32 pins the input index to 0..length(), i.e.,
* if the input index<0 then it is pinned to 0;
* if it is index>length() then it is pinned to length().
* Afterwards, the index is moved by delta code points
* forward or backward,
* but no further backward than to 0 and no further forward than to length().
* The resulting index return value will be in between 0 and length(), inclusively.
*
* Examples:
*
* // s has code points 'a' U+10000 'b' U+10ffff U+2029
* UnicodeString s=UNICODE_STRING("a\\U00010000b\\U0010ffff\\u2029", 31).unescape();
*
* // initial index: position of U+10000
* int32_t index=1;
*
* // the following examples will all result in index==4, position of U+10ffff
*
* // skip 2 code points from some position in the string
* index=s.moveIndex32(index, 2); // skips U+10000 and 'b'
*
* // go to the 3rd code point from the start of s (0-based)
* index=s.moveIndex32(0, 3); // skips 'a', U+10000, and 'b'
*
* // go to the next-to-last code point of s
* index=s.moveIndex32(s.length(), -2); // backward-skips U+2029 and U+10ffff
*
*
* @param index input code unit index
* @param delta (signed) code point count to move the index forward or backward
* in the string
* @return the resulting code unit index
* @stable ICU 2.0
*/
int32_t moveIndex32(int32_t index, int32_t delta) const;
/* Substring extraction */
/**
* Copy the characters in the range
* [start, start + length) into the array dst,
* beginning at dstStart.
* If the string aliases to dst 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 dst
* must be at least (dstStart + length).
* @param dstStart the offset in dst where the first character
* will be extracted
* @stable ICU 2.0
*/
inline void extract(int32_t start,
int32_t length,
UChar *dst,
int32_t dstStart = 0) const;
/**
* Copy the contents of the string into dest.
* This is a convenience function that
* checks if there is enough space in dest,
* extracts the entire string if possible,
* and NUL-terminates dest if possible.
*
* If the string fits into dest but cannot be NUL-terminated
* (length()==destCapacity) then the error code is set to U_STRING_NOT_TERMINATED_WARNING.
* If the string itself does not fit into dest
* (length()>destCapacity) then the error code is set to U_BUFFER_OVERFLOW_ERROR.
*
* If the string aliases to dest itself as an external buffer,
* then extract() will not copy the contents.
*
* @param dest Destination string buffer.
* @param destCapacity Number of UChars available at dest.
* @param errorCode ICU error code.
* @return length()
* @stable ICU 2.0
*/
int32_t
extract(UChar *dest, int32_t destCapacity,
UErrorCode &errorCode) const;
/**
* Copy the characters in the range
* [start, start + length) into the UnicodeString
* target.
* @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 target
* @stable ICU 2.0
*/
inline void extract(int32_t start,
int32_t length,
UnicodeString& target) const;
/**
* Copy the characters in the range [start, limit)
* into the array dst, beginning at dstStart.
* @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 dst
* must be at least (dstStart + (limit - start)).
* @param dstStart the offset in dst where the first character
* will be extracted
* @stable ICU 2.0
*/
inline void extractBetween(int32_t start,
int32_t limit,
UChar *dst,
int32_t dstStart = 0) const;
/**
* Copy the characters in the range [start, limit)
* into the UnicodeString target. Replaceable API.
* @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 target
* @stable ICU 2.0
*/
virtual void extractBetween(int32_t start,
int32_t limit,
UnicodeString& target) const;
/**
* Copy the characters in the range
* [start, start + length) into an array of characters.
* All characters must be invariant (see utypes.h).
* Use US_INV as the last, signature-distinguishing parameter.
*
* This function does not write any more than targetLength
* characters but returns the length of the entire output string
* so that one can allocate a larger buffer and call the function again
* if necessary.
* The output string is NUL-terminated if possible.
*
* @param start offset of first character which will be copied
* @param startLength the number of characters to extract
* @param target the target buffer for extraction, can be NULL
* if targetLength is 0
* @param targetCapacity the length of the target buffer
* @param inv Signature-distinguishing paramater, use US_INV.
* @return the output string length, not including the terminating NUL
* @stable ICU 3.2
*/
int32_t extract(int32_t start,
int32_t startLength,
char *target,
int32_t targetCapacity,
enum EInvariant inv) const;
#if U_CHARSET_IS_UTF8 || !UCONFIG_NO_CONVERSION
/**
* Copy the characters in the range
* [start, start + length) into an array of characters
* in the platform's default codepage.
* This function does not write any more than targetLength
* characters but returns the length of the entire output string
* so that one can allocate a larger buffer and call the function again
* if necessary.
* The output string is NUL-terminated if possible.
*
* @param start offset of first character which will be copied
* @param startLength the number of characters to extract
* @param target the target buffer for extraction
* @param targetLength the length of the target buffer
* If target is NULL, then the number of bytes required for
* target is returned.
* @return the output string length, not including the terminating NUL
* @stable ICU 2.0
*/
int32_t extract(int32_t start,
int32_t startLength,
char *target,
uint32_t targetLength) const;
#endif
#if !UCONFIG_NO_CONVERSION
/**
* Copy the characters in the range
* [start, start + length) into an array of characters
* in a specified codepage.
* The output string is NUL-terminated.
*
* Recommendation: For invariant-character strings use
* extract(int32_t start, int32_t length, char *target, int32_t targetCapacity, enum EInvariant inv) const
* because it avoids object code dependencies of UnicodeString on
* the conversion code.
*
* @param start offset of first character which will be copied
* @param startLength 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 codepage is an empty string (""),
* then a simple conversion is performed on the codepage-invariant
* subset ("invariant characters") of the platform encoding. See utypes.h.
* If target is NULL, then the number of bytes required for
* target is returned. It is assumed that the target is big enough
* to fit all of the characters.
* @return the output string length, not including the terminating NUL
* @stable ICU 2.0
*/
inline int32_t extract(int32_t start,
int32_t startLength,
char *target,
const char *codepage = 0) const;
/**
* Copy the characters in the range
* [start, start + length) into an array of characters
* in a specified codepage.
* This function does not write any more than targetLength
* characters but returns the length of the entire output string
* so that one can allocate a larger buffer and call the function again
* if necessary.
* The output string is NUL-terminated if possible.
*
* Recommendation: For invariant-character strings use
* extract(int32_t start, int32_t length, char *target, int32_t targetCapacity, enum EInvariant inv) const
* because it avoids object code dependencies of UnicodeString on
* the conversion code.
*
* @param start offset of first character which will be copied
* @param startLength the number of characters to extract
* @param target the target buffer for extraction
* @param targetLength the length of the target buffer
* @param codepage the desired codepage for the characters. 0 has
* the special meaning of the default codepage
* If codepage is an empty string (""),
* then a simple conversion is performed on the codepage-invariant
* subset ("invariant characters") of the platform encoding. See utypes.h.
* If target is NULL, then the number of bytes required for
* target is returned.
* @return the output string length, not including the terminating NUL
* @stable ICU 2.0
*/
int32_t extract(int32_t start,
int32_t startLength,
char *target,
uint32_t targetLength,
const char *codepage) const;
/**
* Convert the UnicodeString into a codepage string using an existing UConverter.
* The output string is NUL-terminated if possible.
*
* This function avoids the overhead of opening and closing a converter if
* multiple strings are extracted.
*
* @param dest destination string buffer, can be NULL if destCapacity==0
* @param destCapacity the number of chars available at dest
* @param cnv the converter object to be used (ucnv_resetFromUnicode() will be called),
* or NULL for the default converter
* @param errorCode normal ICU error code
* @return the length of the output string, not counting the terminating NUL;
* if the length is greater than destCapacity, then the string will not fit
* and a buffer of the indicated length would need to be passed in
* @stable ICU 2.0
*/
int32_t extract(char *dest, int32_t destCapacity,
UConverter *cnv,
UErrorCode &errorCode) const;
#endif
/**
* Create a temporary substring for the specified range.
* Unlike the substring constructor and setTo() functions,
* the object returned here will be a read-only alias (using getBuffer())
* rather than copying the text.
* As a result, this substring operation is much faster but requires
* that the original string not be modified or deleted during the lifetime
* of the returned substring object.
* @param start offset of the first character visible in the substring
* @param length length of the substring
* @return a read-only alias UnicodeString object for the substring
* @stable ICU 4.4
*/
UnicodeString tempSubString(int32_t start=0, int32_t length=INT32_MAX) const;
/**
* Create a temporary substring for the specified range.
* Same as tempSubString(start, length) except that the substring range
* is specified as a (start, limit) pair (with an exclusive limit index)
* rather than a (start, length) pair.
* @param start offset of the first character visible in the substring
* @param limit offset immediately following the last character visible in the substring
* @return a read-only alias UnicodeString object for the substring
* @stable ICU 4.4
*/
inline UnicodeString tempSubStringBetween(int32_t start, int32_t limit=INT32_MAX) const;
/**
* Convert the UnicodeString to UTF-8 and write the result
* to a ByteSink. This is called by toUTF8String().
* Unpaired surrogates are replaced with U+FFFD.
* Calls u_strToUTF8WithSub().
*
* @param sink A ByteSink to which the UTF-8 version of the string is written.
* sink.Flush() is called at the end.
* @stable ICU 4.2
* @see toUTF8String
*/
void toUTF8(ByteSink &sink) const;
#if U_HAVE_STD_STRING
/**
* Convert the UnicodeString to UTF-8 and append the result
* to a standard string.
* Unpaired surrogates are replaced with U+FFFD.
* Calls toUTF8().
*
* @param result A standard string (or a compatible object)
* to which the UTF-8 version of the string is appended.
* @return The string object.
* @stable ICU 4.2
* @see toUTF8
*/
templatesrcText.
*
* This function works the same as the assignment operator
* for all strings except for ones that are readonly aliases.
*
* Starting with ICU 2.4, the assignment operator and the copy constructor
* allocate a new buffer and copy the buffer contents even for readonly aliases.
* This function implements the old, more efficient but less safe behavior
* of making this string also a readonly alias to the same buffer.
*
* The fastCopyFrom function must be used only if it is known that the lifetime of
* this UnicodeString does not exceed the lifetime of the aliased buffer
* including its contents, for example for strings from resource bundles
* or aliases to string constants.
*
* @param src The text containing the characters to replace.
* @return a reference to this
* @stable ICU 2.4
*/
UnicodeString &fastCopyFrom(const UnicodeString &src);
/**
* Assignment operator. Replace the characters in this UnicodeString
* with the code unit ch.
* @param ch the code unit to replace
* @return a reference to this
* @stable ICU 2.0
*/
inline UnicodeString& operator= (UChar ch);
/**
* Assignment operator. Replace the characters in this UnicodeString
* with the code point ch.
* @param ch the code point to replace
* @return a reference to this
* @stable ICU 2.0
*/
inline UnicodeString& operator= (UChar32 ch);
/**
* Set the text in the UnicodeString object to the characters
* in srcText in the range
* [srcStart, srcText.length()).
* srcText is not modified.
* @param srcText the source for the new characters
* @param srcStart the offset into srcText where new characters
* will be obtained
* @return a reference to this
* @stable ICU 2.2
*/
inline UnicodeString& setTo(const UnicodeString& srcText,
int32_t srcStart);
/**
* Set the text in the UnicodeString object to the characters
* in srcText in the range
* [srcStart, srcStart + srcLength).
* srcText is not modified.
* @param srcText the source for the new characters
* @param srcStart the offset into srcText where new characters
* will be obtained
* @param srcLength the number of characters in srcText in the
* replace string.
* @return a reference to this
* @stable ICU 2.0
*/
inline UnicodeString& setTo(const UnicodeString& srcText,
int32_t srcStart,
int32_t srcLength);
/**
* Set the text in the UnicodeString object to the characters in
* srcText.
* srcText is not modified.
* @param srcText the source for the new characters
* @return a reference to this
* @stable ICU 2.0
*/
inline UnicodeString& setTo(const UnicodeString& srcText);
/**
* Set the characters in the UnicodeString object to the characters
* in srcChars. srcChars 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 ICU 2.0
*/
inline UnicodeString& setTo(const UChar *srcChars,
int32_t srcLength);
/**
* Set the characters in the UnicodeString object to the code unit
* srcChar.
* @param srcChar the code unit which becomes the UnicodeString's character
* content
* @return a reference to this
* @stable ICU 2.0
*/
UnicodeString& setTo(UChar srcChar);
/**
* Set the characters in the UnicodeString object to the code point
* srcChar.
* @param srcChar the code point which becomes the UnicodeString's character
* content
* @return a reference to this
* @stable ICU 2.0
*/
UnicodeString& setTo(UChar32 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, when using the copy constructor
* or the assignment operator, the text will be copied.
* When using fastCopyFrom(), the text will be aliased again,
* so that both strings then alias the same readonly-text.
*
* @param isTerminated specifies if text is NUL-terminated.
* This must be true if textLength==-1.
* @param text The characters to alias for the UnicodeString.
* @param textLength The number of Unicode characters in text to alias.
* If -1, then this constructor will determine the length
* by calling u_strlen().
* @return a reference to this
* @stable ICU 2.0
*/
UnicodeString &setTo(UBool isTerminated,
const UChar *text,
int32_t textLength);
/**
* Aliasing setTo() function, analogous to the writable-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 buffer to alias.
* @param buffCapacity The size of buffer in UChars.
* @return a reference to this
* @stable ICU 2.0
*/
UnicodeString &setTo(UChar *buffer,
int32_t buffLength,
int32_t buffCapacity);
/**
* Make this UnicodeString object invalid.
* The string will test TRUE with isBogus().
*
* A bogus string has no value. It is different from an empty string.
* It can be used to indicate that no string value is available.
* getBuffer() and getTerminatedBuffer() return NULL, and
* length() returns 0.
*
* This utility function is used throughout the UnicodeString
* implementation to indicate that a UnicodeString operation failed,
* and may be used in other functions,
* especially but not exclusively when such functions do not
* take a UErrorCode for simplicity.
*
* The following methods, and no others, will clear a string object's bogus flag:
* - remove()
* - remove(0, INT32_MAX)
* - truncate(0)
* - operator=() (assignment operator)
* - setTo(...)
*
* The simplest ways to turn a bogus string into an empty one
* is to use the remove() function.
* Examples for other functions that are equivalent to "set to empty string":
* \code
* if(s.isBogus()) {
* s.remove(); // set to an empty string (remove all), or
* s.remove(0, INT32_MAX); // set to an empty string (remove all), or
* s.truncate(0); // set to an empty string (complete truncation), or
* s=UnicodeString(); // assign an empty string, or
* s.setTo((UChar32)-1); // set to a pseudo code point that is out of range, or
* static const UChar nul=0;
* s.setTo(&nul, 0); // set to an empty C Unicode string
* }
* \endcode
*
* @see isBogus()
* @stable ICU 2.0
*/
void setToBogus();
/**
* 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
* @stable ICU 2.0
*/
UnicodeString& setCharAt(int32_t offset,
UChar ch);
/* Append operations */
/**
* Append operator. Append the code unit ch to the UnicodeString
* object.
* @param ch the code unit to be appended
* @return a reference to this
* @stable ICU 2.0
*/
inline UnicodeString& operator+= (UChar ch);
/**
* Append operator. Append the code point ch to the UnicodeString
* object.
* @param ch the code point to be appended
* @return a reference to this
* @stable ICU 2.0
*/
inline UnicodeString& operator+= (UChar32 ch);
/**
* Append operator. Append the characters in srcText to the
* UnicodeString object. srcText is not modified.
* @param srcText the source for the new characters
* @return a reference to this
* @stable ICU 2.0
*/
inline UnicodeString& operator+= (const UnicodeString& srcText);
/**
* Append the characters
* in srcText in the range
* [srcStart, srcStart + srcLength) to the
* UnicodeString object at offset start. srcText
* is not modified.
* @param srcText the source for the new characters
* @param srcStart the offset into srcText where new characters
* will be obtained
* @param srcLength the number of characters in srcText in
* the append string
* @return a reference to this
* @stable ICU 2.0
*/
inline UnicodeString& append(const UnicodeString& srcText,
int32_t srcStart,
int32_t srcLength);
/**
* Append the characters in srcText to the UnicodeString object.
* srcText is not modified.
* @param srcText the source for the new characters
* @return a reference to this
* @stable ICU 2.0
*/
inline UnicodeString& append(const UnicodeString& srcText);
/**
* Append the characters in srcChars in the range
* [srcStart, srcStart + srcLength) to the UnicodeString
* object at offset
* start. srcChars is not modified.
* @param srcChars the source for the new characters
* @param srcStart the offset into srcChars where new characters
* will be obtained
* @param srcLength the number of characters in srcChars in
* the append string; can be -1 if srcChars is NUL-terminated
* @return a reference to this
* @stable ICU 2.0
*/
inline UnicodeString& append(const UChar *srcChars,
int32_t srcStart,
int32_t srcLength);
/**
* Append the characters in srcChars to the UnicodeString object
* at offset start. srcChars is not modified.
* @param srcChars the source for the new characters
* @param srcLength the number of Unicode characters in srcChars;
* can be -1 if srcChars is NUL-terminated
* @return a reference to this
* @stable ICU 2.0
*/
inline UnicodeString& append(const UChar *srcChars,
int32_t srcLength);
/**
* Append the code unit srcChar to the UnicodeString object.
* @param srcChar the code unit to append
* @return a reference to this
* @stable ICU 2.0
*/
inline UnicodeString& append(UChar srcChar);
/**
* Append the code point srcChar to the UnicodeString object.
* @param srcChar the code point to append
* @return a reference to this
* @stable ICU 2.0
*/
UnicodeString& append(UChar32 srcChar);
/* Insert operations */
/**
* Insert the characters in srcText in the range
* [srcStart, srcStart + srcLength) into the UnicodeString
* object at offset start. srcText is not modified.
* @param start the offset where the insertion begins
* @param srcText the source for the new characters
* @param srcStart the offset into srcText where new characters
* will be obtained
* @param srcLength the number of characters in srcText in
* the insert string
* @return a reference to this
* @stable ICU 2.0
*/
inline UnicodeString& insert(int32_t start,
const UnicodeString& srcText,
int32_t srcStart,
int32_t srcLength);
/**
* Insert the characters in srcText into the UnicodeString object
* at offset start. srcText 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 ICU 2.0
*/
inline UnicodeString& insert(int32_t start,
const UnicodeString& srcText);
/**
* Insert the characters in srcChars in the range
* [srcStart, srcStart + srcLength) into the UnicodeString
* object at offset start. srcChars 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 srcChars where new characters
* will be obtained
* @param srcLength the number of characters in srcChars
* in the insert string
* @return a reference to this
* @stable ICU 2.0
*/
inline UnicodeString& insert(int32_t start,
const UChar *srcChars,
int32_t srcStart,
int32_t srcLength);
/**
* Insert the characters in srcChars into the UnicodeString object
* at offset start. srcChars 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 ICU 2.0
*/
inline UnicodeString& insert(int32_t start,
const UChar *srcChars,
int32_t srcLength);
/**
* Insert the code unit srcChar into the UnicodeString object at
* offset start.
* @param start the offset at which the insertion occurs
* @param srcChar the code unit to insert
* @return a reference to this
* @stable ICU 2.0
*/
inline UnicodeString& insert(int32_t start,
UChar srcChar);
/**
* Insert the code point srcChar into the UnicodeString object at
* offset start.
* @param start the offset at which the insertion occurs
* @param srcChar the code point to insert
* @return a reference to this
* @stable ICU 2.0
*/
inline UnicodeString& insert(int32_t start,
UChar32 srcChar);
/* Replace operations */
/**
* Replace the characters in the range
* [start, start + length) with the characters in
* srcText in the range
* [srcStart, srcStart + srcLength).
* srcText is not modified.
* @param start the offset at which the replace operation begins
* @param length the number of characters to replace. The character at
* start + length is not modified.
* @param srcText the source for the new characters
* @param srcStart the offset into srcText where new characters
* will be obtained
* @param srcLength the number of characters in srcText in
* the replace string
* @return a reference to this
* @stable ICU 2.0
*/
UnicodeString& replace(int32_t start,
int32_t length,
const UnicodeString& srcText,
int32_t srcStart,
int32_t srcLength);
/**
* Replace the characters in the range
* [start, start + length)
* with the characters in srcText. srcText is
* not modified.
* @param start the offset at which the replace operation begins
* @param length the number of characters to replace. The character at
* start + length is not modified.
* @param srcText the source for the new characters
* @return a reference to this
* @stable ICU 2.0
*/
UnicodeString& replace(int32_t start,
int32_t length,
const UnicodeString& srcText);
/**
* Replace the characters in the range
* [start, start + length) with the characters in
* srcChars in the range
* [srcStart, srcStart + srcLength). srcChars
* is not modified.
* @param start the offset at which the replace operation begins
* @param length the number of characters to replace. The character at
* start + length is not modified.
* @param srcChars the source for the new characters
* @param srcStart the offset into srcChars where new characters
* will be obtained
* @param srcLength the number of characters in srcChars
* in the replace string
* @return a reference to this
* @stable ICU 2.0
*/
UnicodeString& replace(int32_t start,
int32_t length,
const UChar *srcChars,
int32_t srcStart,
int32_t srcLength);
/**
* Replace the characters in the range
* [start, start + length) with the characters in
* srcChars. srcChars is not modified.
* @param start the offset at which the replace operation begins
* @param length number of characters to replace. The character at
* start + length 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 ICU 2.0
*/
inline UnicodeString& replace(int32_t start,
int32_t length,
const UChar *srcChars,
int32_t srcLength);
/**
* Replace the characters in the range
* [start, start + length) with the code unit
* srcChar.
* @param start the offset at which the replace operation begins
* @param length the number of characters to replace. The character at
* start + length is not modified.
* @param srcChar the new code unit
* @return a reference to this
* @stable ICU 2.0
*/
inline UnicodeString& replace(int32_t start,
int32_t length,
UChar srcChar);
/**
* Replace the characters in the range
* [start, start + length) with the code point
* srcChar.
* @param start the offset at which the replace operation begins
* @param length the number of characters to replace. The character at
* start + length is not modified.
* @param srcChar the new code point
* @return a reference to this
* @stable ICU 2.0
*/
UnicodeString& replace(int32_t start, int32_t length, UChar32 srcChar);
/**
* Replace the characters in the range [start, limit)
* with the characters in srcText. srcText 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 ICU 2.0
*/
inline UnicodeString& replaceBetween(int32_t start,
int32_t limit,
const UnicodeString& srcText);
/**
* Replace the characters in the range [start, limit)
* with the characters in srcText in the range
* [srcStart, srcLimit). srcText 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 srcChars where new characters
* will be obtained
* @param srcLimit the offset immediately following the range to copy
* in srcText
* @return a reference to this
* @stable ICU 2.0
*/
inline UnicodeString& replaceBetween(int32_t start,
int32_t limit,
const UnicodeString& srcText,
int32_t srcStart,
int32_t srcLimit);
/**
* Replace a substring of this object with the given text.
* @param start the beginning index, inclusive; 0 <= start
* <= limit.
* @param limit the ending index, exclusive; start <= limit
* <= length().
* @param text the text to replace characters start
* to limit - 1
* @stable ICU 2.0
*/
virtual void handleReplaceBetween(int32_t start,
int32_t limit,
const UnicodeString& text);
/**
* Replaceable API
* @return TRUE if it has MetaData
* @stable ICU 2.4
*/
virtual UBool hasMetaData() const;
/**
* Copy a substring of this object, retaining attribute (out-of-band)
* information. This method is used to duplicate or reorder substrings.
* The destination index must not overlap the source range.
*
* @param start the beginning index, inclusive; 0 <= start <=
* limit.
* @param limit the ending index, exclusive; start <= limit <=
* length().
* @param dest the destination index. The characters from
* start..limit-1 will be copied to dest.
* Implementations of this method may assume that dest <= start ||
* dest >= limit.
* @stable ICU 2.0
*/
virtual void copy(int32_t start, int32_t limit, int32_t dest);
/* 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 ICU 2.0
*/
inline UnicodeString& findAndReplace(const UnicodeString& oldText,
const UnicodeString& newText);
/**
* Replace all occurrences of characters in oldText with characters
* in newText
* in the range [start, start + length).
* @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 ICU 2.0
*/
inline UnicodeString& findAndReplace(int32_t start,
int32_t length,
const UnicodeString& oldText,
const UnicodeString& newText);
/**
* Replace all occurrences of characters in oldText in the range
* [oldStart, oldStart + oldLength) with the characters
* in newText in the range
* [newStart, newStart + newLength)
* in the range [start, start + length).
* @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 oldText
* @param oldLength the length of the search range in oldText
* @param newText the text containing the replacement text
* @param newStart the start of the replacement range in newText
* @param newLength the length of the replacement range in newText
* @return a reference to this
* @stable ICU 2.0
*/
UnicodeString& findAndReplace(int32_t start,
int32_t length,
const UnicodeString& oldText,
int32_t oldStart,
int32_t oldLength,
const UnicodeString& newText,
int32_t newStart,
int32_t newLength);
/* Remove operations */
/**
* Remove all characters from the UnicodeString object.
* @return a reference to this
* @stable ICU 2.0
*/
inline UnicodeString& remove(void);
/**
* Remove the characters in the range
* [start, start + length) 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 ICU 2.0
*/
inline UnicodeString& remove(int32_t start,
int32_t length = (int32_t)INT32_MAX);
/**
* Remove the characters in the range
* [start, limit) 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 ICU 2.0
*/
inline UnicodeString& removeBetween(int32_t start,
int32_t limit = (int32_t)INT32_MAX);
/**
* Retain only the characters in the range
* [start, limit) from the UnicodeString object.
* Removes characters before start and at and after limit.
* @param start the offset of the first character to retain
* @param limit the offset immediately following the range to retain
* @return a reference to this
* @stable ICU 4.4
*/
inline UnicodeString &retainBetween(int32_t start, int32_t limit = INT32_MAX);
/* Length operations */
/**
* Pad the start of this UnicodeString with the character padChar.
* 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.
* @stable ICU 2.0
*/
UBool padLeading(int32_t targetLength,
UChar padChar = 0x0020);
/**
* Pad the end of this UnicodeString with the character padChar.
* 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.
* @stable ICU 2.0
*/
UBool padTrailing(int32_t targetLength,
UChar padChar = 0x0020);
/**
* Truncate this UnicodeString to the targetLength.
* @param targetLength the desired length of this UnicodeString.
* @return TRUE if the text was truncated, FALSE otherwise
* @stable ICU 2.0
*/
inline UBool truncate(int32_t targetLength);
/**
* Trims leading and trailing whitespace from this UnicodeString.
* @return a reference to this
* @stable ICU 2.0
*/
UnicodeString& trim(void);
/* Miscellaneous operations */
/**
* Reverse this UnicodeString in place.
* @return a reference to this
* @stable ICU 2.0
*/
inline UnicodeString& reverse(void);
/**
* Reverse the range [start, start + length) 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 ICU 2.0
*/
inline UnicodeString& reverse(int32_t 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 ICU 2.0
*/
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 ICU 2.0
*/
UnicodeString& toUpper(const Locale& locale);
/**
* Convert the characters in this to lower case following the conventions of
* the default locale.
* @return A reference to this.
* @stable ICU 2.0
*/
UnicodeString& toLower(void);
/**
* Convert the characters in this to lower case following the conventions of
* a specific locale.
* @param locale The locale containing the conventions to use.
* @return A reference to this.
* @stable ICU 2.0
*/
UnicodeString& toLower(const Locale& locale);
#if !UCONFIG_NO_BREAK_ITERATION
/**
* Titlecase this string, convenience function using the default locale.
*
* Casing is locale-dependent and context-sensitive.
* Titlecasing uses a break iterator to find the first characters of words
* that are to be titlecased. It titlecases those characters and lowercases
* all others.
*
* The titlecase break iterator can be provided to customize for arbitrary
* styles, using rules and dictionaries beyond the standard iterators.
* It may be more efficient to always provide an iterator to avoid
* opening and closing one for each string.
* The standard titlecase iterator for the root locale implements the
* algorithm of Unicode TR 21.
*
* This function uses only the setText(), first() and next() methods of the
* provided break iterator.
*
* @param titleIter A break iterator to find the first characters of words
* that are to be titlecased.
* If none is provided (0), then a standard titlecase
* break iterator is opened.
* Otherwise the provided iterator is set to the string's text.
* @return A reference to this.
* @stable ICU 2.1
*/
UnicodeString &toTitle(BreakIterator *titleIter);
/**
* Titlecase this string.
*
* Casing is locale-dependent and context-sensitive.
* Titlecasing uses a break iterator to find the first characters of words
* that are to be titlecased. It titlecases those characters and lowercases
* all others.
*
* The titlecase break iterator can be provided to customize for arbitrary
* styles, using rules and dictionaries beyond the standard iterators.
* It may be more efficient to always provide an iterator to avoid
* opening and closing one for each string.
* The standard titlecase iterator for the root locale implements the
* algorithm of Unicode TR 21.
*
* This function uses only the setText(), first() and next() methods of the
* provided break iterator.
*
* @param titleIter A break iterator to find the first characters of words
* that are to be titlecased.
* If none is provided (0), then a standard titlecase
* break iterator is opened.
* Otherwise the provided iterator is set to the string's text.
* @param locale The locale to consider.
* @return A reference to this.
* @stable ICU 2.1
*/
UnicodeString &toTitle(BreakIterator *titleIter, const Locale &locale);
/**
* Titlecase this string, with options.
*
* Casing is locale-dependent and context-sensitive.
* Titlecasing uses a break iterator to find the first characters of words
* that are to be titlecased. It titlecases those characters and lowercases
* all others. (This can be modified with options.)
*
* The titlecase break iterator can be provided to customize for arbitrary
* styles, using rules and dictionaries beyond the standard iterators.
* It may be more efficient to always provide an iterator to avoid
* opening and closing one for each string.
* The standard titlecase iterator for the root locale implements the
* algorithm of Unicode TR 21.
*
* This function uses only the setText(), first() and next() methods of the
* provided break iterator.
*
* @param titleIter A break iterator to find the first characters of words
* that are to be titlecased.
* If none is provided (0), then a standard titlecase
* break iterator is opened.
* Otherwise the provided iterator is set to the string's text.
* @param locale The locale to consider.
* @param options Options bit set, see ucasemap_open().
* @return A reference to this.
* @see U_TITLECASE_NO_LOWERCASE
* @see U_TITLECASE_NO_BREAK_ADJUSTMENT
* @see ucasemap_open
* @stable ICU 3.8
*/
UnicodeString &toTitle(BreakIterator *titleIter, const Locale &locale, uint32_t options);
#endif
/**
* Case-folds the characters in this string.
*
* Case-folding is locale-independent and not context-sensitive,
* but there is an option for whether to include or exclude mappings for dotted I
* and dotless i that are marked with 'T' in CaseFolding.txt.
*
* The result may be longer or shorter than the original.
*
* @param options Either U_FOLD_CASE_DEFAULT or U_FOLD_CASE_EXCLUDE_SPECIAL_I
* @return A reference to this.
* @stable ICU 2.0
*/
UnicodeString &foldCase(uint32_t options=0 /*U_FOLD_CASE_DEFAULT*/);
//========================================
// Access to the internal buffer
//========================================
/**
* Get a read/write pointer to the internal buffer.
* The buffer is guaranteed to be large enough for at least minCapacity UChars,
* writable, and is still owned by the UnicodeString object.
* Calls to getBuffer(minCapacity) must not be nested, and
* must be matched with calls to releaseBuffer(newLength).
* If the string buffer was read-only or shared,
* then it will be reallocated and copied.
*
* An attempted nested call will return 0, and will not further modify the
* state of the UnicodeString object.
* It also returns 0 if the string is bogus.
*
* The actual capacity of the string buffer may be larger than minCapacity.
* getCapacity() returns the actual capacity.
* For many operations, the full capacity should be used to avoid reallocations.
*
* While the buffer is "open" between getBuffer(minCapacity)
* and releaseBuffer(newLength), the following applies:
* - The string length is set to 0.
* - Any read API call on the UnicodeString object will behave like on a 0-length string.
* - Any write API call on the UnicodeString object is disallowed and will have no effect.
* - You can read from and write to the returned buffer.
* - The previous string contents will still be in the buffer;
* if you want to use it, then you need to call length() before getBuffer(minCapacity).
* If the length() was greater than minCapacity, then any contents after minCapacity
* may be lost.
* The buffer contents is not NUL-terminated by getBuffer().
* If length()-DUNISTR_FROM_CHAR_EXPLICIT=explicit
* on the compiler command line or similar.
* @param ch the character to place in the UnicodeString
* @stable ICU 2.0
*/
UNISTR_FROM_CHAR_EXPLICIT UnicodeString(UChar ch);
/**
* Single UChar32 (code point) constructor.
*
* It is recommended to mark this constructor "explicit" by
* -DUNISTR_FROM_CHAR_EXPLICIT=explicit
* on the compiler command line or similar.
* @param ch the character to place in the UnicodeString
* @stable ICU 2.0
*/
UNISTR_FROM_CHAR_EXPLICIT UnicodeString(UChar32 ch);
/**
* UChar* constructor.
*
* It is recommended to mark this constructor "explicit" by
* -DUNISTR_FROM_STRING_EXPLICIT=explicit
* on the compiler command line or similar.
* @param text The characters to place in the UnicodeString. text
* must be NULL (U+0000) terminated.
* @stable ICU 2.0
*/
UNISTR_FROM_STRING_EXPLICIT UnicodeString(const UChar *text);
/**
* UChar* constructor.
* @param text The characters to place in the UnicodeString.
* @param textLength The number of Unicode characters in text
* to copy.
* @stable ICU 2.0
*/
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, when using the copy constructor
* or the assignment operator, the text will be copied.
* When using fastCopyFrom(), the text will be aliased again,
* so that both strings then alias the same readonly-text.
*
* @param isTerminated specifies if text is NUL-terminated.
* This must be true if textLength==-1.
* @param text The characters to alias for the UnicodeString.
* @param textLength The number of Unicode characters in text to alias.
* If -1, then this constructor will determine the length
* by calling u_strlen().
* @stable ICU 2.0
*/
UnicodeString(UBool isTerminated,
const UChar *text,
int32_t textLength);
/**
* Writable-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 buffer to alias.
* @param buffCapacity The size of buffer in UChars.
* @stable ICU 2.0
*/
UnicodeString(UChar *buffer, int32_t buffLength, int32_t buffCapacity);
#if U_CHARSET_IS_UTF8 || !UCONFIG_NO_CONVERSION
/**
* char* constructor.
* Uses the default converter (and thus depends on the ICU conversion code)
* unless U_CHARSET_IS_UTF8 is set to 1.
*
* For ASCII (really "invariant character") strings it is more efficient to use
* the constructor that takes a US_INV (for its enum EInvariant).
* For ASCII (invariant-character) string literals, see UNICODE_STRING and
* UNICODE_STRING_SIMPLE.
*
* It is recommended to mark this constructor "explicit" by
* -DUNISTR_FROM_STRING_EXPLICIT=explicit
* on the compiler command line or similar.
* @param codepageData an array of bytes, null-terminated,
* in the platform's default codepage.
* @stable ICU 2.0
* @see UNICODE_STRING
* @see UNICODE_STRING_SIMPLE
*/
UNISTR_FROM_STRING_EXPLICIT UnicodeString(const char *codepageData);
/**
* char* constructor.
* Uses the default converter (and thus depends on the ICU conversion code)
* unless U_CHARSET_IS_UTF8 is set to 1.
* @param codepageData an array of bytes in the platform's default codepage.
* @param dataLength The number of bytes in codepageData.
* @stable ICU 2.0
*/
UnicodeString(const char *codepageData, int32_t dataLength);
#endif
#if !UCONFIG_NO_CONVERSION
/**
* char* constructor.
* @param codepageData an array of bytes, null-terminated
* @param codepage the encoding of codepageData. The special
* value 0 for codepage indicates that the text is in the
* platform's default codepage.
*
* If codepage is an empty string (""),
* then a simple conversion is performed on the codepage-invariant
* subset ("invariant characters") of the platform encoding. See utypes.h.
* Recommendation: For invariant-character strings use the constructor
* UnicodeString(const char *src, int32_t length, enum EInvariant inv)
* because it avoids object code dependencies of UnicodeString on
* the conversion code.
*
* @stable ICU 2.0
*/
UnicodeString(const char *codepageData, const char *codepage);
/**
* char* constructor.
* @param codepageData an array of bytes.
* @param dataLength The number of bytes in codepageData.
* @param codepage the encoding of codepageData. The special
* value 0 for codepage indicates that the text is in the
* platform's default codepage.
* If codepage is an empty string (""),
* then a simple conversion is performed on the codepage-invariant
* subset ("invariant characters") of the platform encoding. See utypes.h.
* Recommendation: For invariant-character strings use the constructor
* UnicodeString(const char *src, int32_t length, enum EInvariant inv)
* because it avoids object code dependencies of UnicodeString on
* the conversion code.
*
* @stable ICU 2.0
*/
UnicodeString(const char *codepageData, int32_t dataLength, const char *codepage);
/**
* char * / UConverter constructor.
* This constructor uses an existing UConverter object to
* convert the codepage string to Unicode and construct a UnicodeString
* from that.
*
* The converter is reset at first.
* If the error code indicates a failure before this constructor is called,
* or if an error occurs during conversion or construction,
* then the string will be bogus.
*
* This function avoids the overhead of opening and closing a converter if
* multiple strings are constructed.
*
* @param src input codepage string
* @param srcLength length of the input string, can be -1 for NUL-terminated strings
* @param cnv converter object (ucnv_resetToUnicode() will be called),
* can be NULL for the default converter
* @param errorCode normal ICU error code
* @stable ICU 2.0
*/
UnicodeString(
const char *src, int32_t srcLength,
UConverter *cnv,
UErrorCode &errorCode);
#endif
/**
* Constructs a Unicode string from an invariant-character char * string.
* About invariant characters see utypes.h.
* This constructor has no runtime dependency on conversion code and is
* therefore recommended over ones taking a charset name string
* (where the empty string "" indicates invariant-character conversion).
*
* Use the macro US_INV as the third, signature-distinguishing parameter.
*
* For example:
* \code
* void fn(const char *s) {
* UnicodeString ustr(s, -1, US_INV);
* // use ustr ...
* }
* \endcode
*
* @param src String using only invariant characters.
* @param length Length of src, or -1 if NUL-terminated.
* @param inv Signature-distinguishing paramater, use US_INV.
*
* @see US_INV
* @stable ICU 3.2
*/
UnicodeString(const char *src, int32_t length, enum EInvariant inv);
/**
* Copy constructor.
* @param that The UnicodeString object to copy.
* @stable ICU 2.0
*/
UnicodeString(const UnicodeString& that);
/**
* 'Substring' constructor from tail of source string.
* @param src The UnicodeString object to copy.
* @param srcStart The offset into src at which to start copying.
* @stable ICU 2.2
*/
UnicodeString(const UnicodeString& src, int32_t srcStart);
/**
* 'Substring' constructor from subrange of source string.
* @param src The UnicodeString object to copy.
* @param srcStart The offset into src at which to start copying.
* @param srcLength The number of characters from src to copy.
* @stable ICU 2.2
*/
UnicodeString(const UnicodeString& src, int32_t srcStart, int32_t srcLength);
/**
* Clone this object, an instance of a subclass of Replaceable.
* Clones can be used concurrently in multiple threads.
* If a subclass does not implement clone(), or if an error occurs,
* then NULL is returned.
* The clone functions in all subclasses return a pointer to a Replaceable
* because some compilers do not support covariant (same-as-this)
* return types; cast to the appropriate subclass if necessary.
* The caller must delete the clone.
*
* @return a clone of this object
*
* @see Replaceable::clone
* @see getDynamicClassID
* @stable ICU 2.6
*/
virtual Replaceable *clone() const;
/** Destructor.
* @stable ICU 2.0
*/
virtual ~UnicodeString();
/**
* Create a UnicodeString from a UTF-8 string.
* Illegal input is replaced with U+FFFD. Otherwise, errors result in a bogus string.
* Calls u_strFromUTF8WithSub().
*
* @param utf8 UTF-8 input string.
* Note that a StringPiece can be implicitly constructed
* from a std::string or a NUL-terminated const char * string.
* @return A UnicodeString with equivalent UTF-16 contents.
* @see toUTF8
* @see toUTF8String
* @stable ICU 4.2
*/
static UnicodeString fromUTF8(const StringPiece &utf8);
/**
* Create a UnicodeString from a UTF-32 string.
* Illegal input is replaced with U+FFFD. Otherwise, errors result in a bogus string.
* Calls u_strFromUTF32WithSub().
*
* @param utf32 UTF-32 input string. Must not be NULL.
* @param length Length of the input string, or -1 if NUL-terminated.
* @return A UnicodeString with equivalent UTF-16 contents.
* @see toUTF32
* @stable ICU 4.2
*/
static UnicodeString fromUTF32(const UChar32 *utf32, int32_t length);
/* Miscellaneous operations */
/**
* Unescape a string of characters and return a string containing
* the result. The following escape sequences are recognized:
*
* \\uhhhh 4 hex digits; h in [0-9A-Fa-f]
* \\Uhhhhhhhh 8 hex digits
* \\xhh 1-2 hex digits
* \\ooo 1-3 octal digits; o in [0-7]
* \\cX control-X; X is masked with 0x1F
*
* as well as the standard ANSI C escapes:
*
* \\a => U+0007, \\b => U+0008, \\t => U+0009, \\n => U+000A,
* \\v => U+000B, \\f => U+000C, \\r => U+000D, \\e => U+001B,
* \\" => U+0022, \\' => U+0027, \\? => U+003F, \\\\ => U+005C
*
* Anything else following a backslash is generically escaped. For
* example, "[a\\-z]" returns "[a-z]".
*
* If an escape sequence is ill-formed, this method returns an empty
* string. An example of an ill-formed sequence is "\\u" followed by
* fewer than 4 hex digits.
*
* This function is similar to u_unescape() but not identical to it.
* The latter takes a source char*, so it does escape recognition
* and also invariant conversion.
*
* @return a string with backslash escapes interpreted, or an
* empty string on error.
* @see UnicodeString#unescapeAt()
* @see u_unescape()
* @see u_unescapeAt()
* @stable ICU 2.0
*/
UnicodeString unescape() const;
/**
* Unescape a single escape sequence and return the represented
* character. See unescape() for a listing of the recognized escape
* sequences. The character at offset-1 is assumed (without
* checking) to be a backslash. If the escape sequence is
* ill-formed, or the offset is out of range, (UChar32)0xFFFFFFFF is
* returned.
*
* @param offset an input output parameter. On input, it is the
* offset into this string where the escape sequence is located,
* after the initial backslash. On output, it is advanced after the
* last character parsed. On error, it is not advanced at all.
* @return the character represented by the escape sequence at
* offset, or (UChar32)0xFFFFFFFF on error.
* @see UnicodeString#unescape()
* @see u_unescape()
* @see u_unescapeAt()
* @stable ICU 2.0
*/
UChar32 unescapeAt(int32_t &offset) const;
/**
* ICU "poor man's RTTI", returns a UClassID for this class.
*
* @stable ICU 2.2
*/
static UClassID U_EXPORT2 getStaticClassID();
/**
* ICU "poor man's RTTI", returns a UClassID for the actual class.
*
* @stable ICU 2.2
*/
virtual UClassID getDynamicClassID() const;
//========================================
// Implementation methods
//========================================
protected:
/**
* Implement Replaceable::getLength() (see jitterbug 1027).
* @stable ICU 2.4
*/
virtual int32_t getLength() const;
/**
* The change in Replaceable to use virtual getCharAt() allows
* UnicodeString::charAt() to be inline again (see jitterbug 709).
* @stable ICU 2.4
*/
virtual UChar getCharAt(int32_t offset) const;
/**
* The change in Replaceable to use virtual getChar32At() allows
* UnicodeString::char32At() to be inline again (see jitterbug 709).
* @stable ICU 2.4
*/
virtual UChar32 getChar32At(int32_t offset) const;
private:
// For char* constructors. Could be made public.
UnicodeString &setToUTF8(const StringPiece &utf8);
// For extract(char*).
// We could make a toUTF8(target, capacity, errorCode) public but not
// this version: New API will be cleaner if we make callers create substrings
// rather than having start+length on every method,
// and it should take a UErrorCode&.
int32_t
toUTF8(int32_t start, int32_t len,
char *target, int32_t capacity) const;
/**
* Internal string contents comparison, called by operator==.
* Requires: this & text not bogus and have same lengths.
*/
UBool doEquals(const UnicodeString &text, int32_t len) const;
inline int8_t
doCompare(int32_t start,
int32_t length,
const UnicodeString& srcText,
int32_t srcStart,
int32_t srcLength) const;
int8_t doCompare(int32_t start,
int32_t length,
const UChar *srcChars,
int32_t srcStart,
int32_t srcLength) const;
inline int8_t
doCompareCodePointOrder(int32_t start,
int32_t length,
const UnicodeString& srcText,
int32_t srcStart,
int32_t srcLength) const;
int8_t doCompareCodePointOrder(int32_t start,
int32_t length,
const UChar *srcChars,
int32_t srcStart,
int32_t srcLength) const;
inline int8_t
doCaseCompare(int32_t start,
int32_t length,
const UnicodeString &srcText,
int32_t srcStart,
int32_t srcLength,
uint32_t options) const;
int8_t
doCaseCompare(int32_t start,
int32_t length,
const UChar *srcChars,
int32_t srcStart,
int32_t srcLength,
uint32_t options) const;
int32_t doIndexOf(UChar c,
int32_t start,
int32_t length) const;
int32_t doIndexOf(UChar32 c,
int32_t start,
int32_t length) const;
int32_t doLastIndexOf(UChar c,
int32_t start,
int32_t length) const;
int32_t doLastIndexOf(UChar32 c,
int32_t start,
int32_t length) const;
void doExtract(int32_t start,
int32_t length,
UChar *dst,
int32_t dstStart) const;
inline void doExtract(int32_t start,
int32_t length,
UnicodeString& target) const;
inline UChar doCharAt(int32_t offset) const;
UnicodeString& doReplace(int32_t start,
int32_t length,
const UnicodeString& srcText,
int32_t srcStart,
int32_t srcLength);
UnicodeString& doReplace(int32_t start,
int32_t length,
const UChar *srcChars,
int32_t srcStart,
int32_t srcLength);
UnicodeString& doReverse(int32_t start,
int32_t length);
// calculate hash code
int32_t doHashCode(void) const;
// get pointer to start of array
// these do not check for kOpenGetBuffer, unlike the public getBuffer() function
inline UChar* getArrayStart(void);
inline const UChar* getArrayStart(void) const;
// A UnicodeString object (not necessarily its current buffer)
// is writable unless it isBogus() or it has an "open" getBuffer(minCapacity).
inline UBool isWritable() const;
// Is the current buffer writable?
inline UBool isBufferWritable() const;
// None of the following does releaseArray().
inline void setLength(int32_t len); // sets only fShortLength and fLength
inline void setToEmpty(); // sets fFlags=kShortString
inline void setArray(UChar *array, int32_t len, int32_t capacity); // does not set fFlags
// allocate the array; result may be fStackBuffer
// sets refCount to 1 if appropriate
// sets fArray, fCapacity, and fFlags
// returns boolean for success or failure
UBool allocate(int32_t capacity);
// release the array if owned
void releaseArray(void);
// turn a bogus string into an empty one
void unBogus();
// implements assigment operator, copy constructor, and fastCopyFrom()
UnicodeString ©From(const UnicodeString &src, UBool fastCopy=FALSE);
// Pin start and limit to acceptable values.
inline void pinIndex(int32_t& start) const;
inline void pinIndices(int32_t& start,
int32_t& length) const;
#if !UCONFIG_NO_CONVERSION
/* Internal extract() using UConverter. */
int32_t doExtract(int32_t start, int32_t length,
char *dest, int32_t destCapacity,
UConverter *cnv,
UErrorCode &errorCode) const;
/*
* Real constructor for converting from codepage data.
* It assumes that it is called with !fRefCounted.
*
* If codepage==0, then the default converter
* is used for the platform encoding.
* If codepage is an empty string (""),
* 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);
/*
* Worker function for creating a UnicodeString from
* a codepage string using a UConverter.
*/
void
doCodepageCreate(const char *codepageData,
int32_t dataLength,
UConverter *converter,
UErrorCode &status);
#endif
/*
* 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.
*/
UBool cloneArrayIfNeeded(int32_t newCapacity = -1,
int32_t growCapacity = -1,
UBool doCopyArray = TRUE,
int32_t **pBufferToDelete = 0,
UBool forceClone = FALSE);
/**
* Common function for UnicodeString case mappings.
* The stringCaseMapper has the same type UStringCaseMapper
* as in ustr_imp.h for ustrcase_map().
*/
UnicodeString &
caseMap(const UCaseMap *csm, UStringCaseMapper *stringCaseMapper);
// ref counting
void addRef(void);
int32_t removeRef(void);
int32_t refCount(void) const;
// constants
enum {
// Set the stack buffer size so that sizeof(UnicodeString) is,
// naturally (without padding), a multiple of sizeof(pointer).
US_STACKBUF_SIZE= sizeof(void *)==4 ? 13 : 15, // Size of stack buffer for short strings
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 or NULL
kUsingStackBuffer=2,// using fUnion.fStackBuffer instead of fUnion.fFields
kRefCounted=4, // there is a refCount field before the characters in fArray
kBufferIsReadonly=8,// do not write to this buffer
kOpenGetBuffer=16, // getBuffer(minCapacity) was called (is "open"),
// and releaseBuffer(newLength) must be called
// combined values for convenience
kShortString=kUsingStackBuffer,
kLongString=kRefCounted,
kReadonlyAlias=kBufferIsReadonly,
kWritableAlias=0
};
friend class StringThreadTest;
friend class UnicodeStringAppendable;
union StackBufferOrFields; // forward declaration necessary before friend declaration
friend union StackBufferOrFields; // make US_STACKBUF_SIZE visible inside fUnion
/*
* 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.
* On 32-bit machines, the size should be 32 bytes,
* on 64-bit machines (8-byte pointers), it should be 40 bytes.
*
* We use a hack to achieve this.
*
* With at least some compilers, each of the following is forced to
* a multiple of sizeof(pointer) [the largest field base unit here is a data pointer],
* rounded up with additional padding if the fields do not already fit that requirement:
* - sizeof(class UnicodeString)
* - offsetof(UnicodeString, fUnion)
* - sizeof(fUnion)
* - sizeof(fFields)
*
* In order to avoid padding, we make sizeof(fStackBuffer)=16 (=8 UChars)
* which is at least as large as sizeof(fFields) on 32-bit and 64-bit machines.
* (Padding at the end of fFields is ok:
* As long as there is no padding after fStackBuffer, it is not wasted space.)
*
* We further assume that the compiler does not reorder the fields,
* so that fRestOfStackBuffer (which holds a few more UChars) immediately follows after fUnion,
* with at most some padding (but no other field) in between.
* (Padding there would be wasted space, but functionally harmless.)
*
* We use a few more sizeof(pointer)'s chunks of space with
* fRestOfStackBuffer, fShortLength and fFlags,
* to get up exactly to the intended sizeof(UnicodeString).
*/
// (implicit) *vtable;
union StackBufferOrFields {
// fStackBuffer is used iff (fFlags&kUsingStackBuffer)
// else fFields is used
UChar fStackBuffer[8]; // buffer for short strings, together with fRestOfStackBuffer
struct {
UChar *fArray; // the Unicode data
int32_t fCapacity; // capacity of fArray (in UChars)
int32_t fLength; // number of characters in fArray if >127; else undefined
} fFields;
} fUnion;
UChar fRestOfStackBuffer[US_STACKBUF_SIZE-8];
int8_t fShortLength; // 0..127: length <0: real length is in fUnion.fFields.fLength
uint8_t fFlags; // bit flags: see constants above
};
/**
* Create a new UnicodeString with the concatenation of two others.
*
* @param s1 The first string to be copied to the new one.
* @param s2 The second string to be copied to the new one, after s1.
* @return UnicodeString(s1).append(s2)
* @stable ICU 2.8
*/
U_COMMON_API UnicodeString U_EXPORT2
operator+ (const UnicodeString &s1, const UnicodeString &s2);
//========================================
// Inline members
//========================================
//========================================
// Privates
//========================================
inline void
UnicodeString::pinIndex(int32_t& start) const
{
// pin index
if(start < 0) {
start = 0;
} else if(start > length()) {
start = length();
}
}
inline void
UnicodeString::pinIndices(int32_t& start,
int32_t& _length) const
{
// pin indices
int32_t len = length();
if(start < 0) {
start = 0;
} else if(start > len) {
start = len;
}
if(_length < 0) {
_length = 0;
} else if(_length > (len - start)) {
_length = (len - start);
}
}
inline UChar*
UnicodeString::getArrayStart()
{ return (fFlags&kUsingStackBuffer) ? fUnion.fStackBuffer : fUnion.fFields.fArray; }
inline const UChar*
UnicodeString::getArrayStart() const
{ return (fFlags&kUsingStackBuffer) ? fUnion.fStackBuffer : fUnion.fFields.fArray; }
//========================================
// Read-only implementation methods
//========================================
inline int32_t
UnicodeString::length() const
{ return fShortLength>=0 ? fShortLength : fUnion.fFields.fLength; }
inline int32_t
UnicodeString::getCapacity() const
{ return (fFlags&kUsingStackBuffer) ? US_STACKBUF_SIZE : fUnion.fFields.fCapacity; }
inline int32_t
UnicodeString::hashCode() const
{ return doHashCode(); }
inline UBool
UnicodeString::isBogus() const
{ return (UBool)(fFlags & kIsBogus); }
inline UBool
UnicodeString::isWritable() const
{ return (UBool)!(fFlags&(kOpenGetBuffer|kIsBogus)); }
inline UBool
UnicodeString::isBufferWritable() const
{
return (UBool)(
!(fFlags&(kOpenGetBuffer|kIsBogus|kBufferIsReadonly)) &&
(!(fFlags&kRefCounted) || refCount()==1));
}
inline const UChar *
UnicodeString::getBuffer() const {
if(fFlags&(kIsBogus|kOpenGetBuffer)) {
return 0;
} else if(fFlags&kUsingStackBuffer) {
return fUnion.fStackBuffer;
} else {
return fUnion.fFields.fArray;
}
}
//========================================
// Read-only alias methods
//========================================
inline int8_t
UnicodeString::doCompare(int32_t start,
int32_t thisLength,
const UnicodeString& srcText,
int32_t srcStart,
int32_t srcLength) const
{
if(srcText.isBogus()) {
return (int8_t)!isBogus(); // 0 if both are bogus, 1 otherwise
} else {
srcText.pinIndices(srcStart, srcLength);
return doCompare(start, thisLength, srcText.getArrayStart(), srcStart, srcLength);
}
}
inline UBool
UnicodeString::operator== (const UnicodeString& text) const
{
if(isBogus()) {
return text.isBogus();
} else {
int32_t len = length(), textLength = text.length();
return !text.isBogus() && len == textLength && doEquals(text, len);
}
}
inline UBool
UnicodeString::operator!= (const UnicodeString& text) const
{ return (! operator==(text)); }
inline UBool
UnicodeString::operator> (const UnicodeString& text) const
{ return doCompare(0, length(), text, 0, text.length()) == 1; }
inline UBool
UnicodeString::operator< (const UnicodeString& text) const
{ return doCompare(0, length(), text, 0, text.length()) == -1; }
inline UBool
UnicodeString::operator>= (const UnicodeString& text) const
{ return doCompare(0, length(), text, 0, text.length()) != -1; }
inline UBool
UnicodeString::operator<= (const UnicodeString& text) const
{ return doCompare(0, length(), text, 0, text.length()) != 1; }
inline int8_t
UnicodeString::compare(const UnicodeString& text) const
{ return doCompare(0, length(), text, 0, text.length()); }
inline int8_t
UnicodeString::compare(int32_t start,
int32_t _length,
const UnicodeString& srcText) const
{ return doCompare(start, _length, srcText, 0, srcText.length()); }
inline int8_t
UnicodeString::compare(const UChar *srcChars,
int32_t srcLength) const
{ return doCompare(0, length(), srcChars, 0, srcLength); }
inline int8_t
UnicodeString::compare(int32_t start,
int32_t _length,
const UnicodeString& srcText,
int32_t srcStart,
int32_t srcLength) const
{ return doCompare(start, _length, srcText, srcStart, srcLength); }
inline int8_t
UnicodeString::compare(int32_t start,
int32_t _length,
const UChar *srcChars) const
{ return doCompare(start, _length, srcChars, 0, _length); }
inline int8_t
UnicodeString::compare(int32_t start,
int32_t _length,
const UChar *srcChars,
int32_t srcStart,
int32_t srcLength) const
{ return doCompare(start, _length, srcChars, srcStart, srcLength); }
inline int8_t
UnicodeString::compareBetween(int32_t start,
int32_t limit,
const UnicodeString& srcText,
int32_t srcStart,
int32_t srcLimit) const
{ return doCompare(start, limit - start,
srcText, srcStart, srcLimit - srcStart); }
inline int8_t
UnicodeString::doCompareCodePointOrder(int32_t start,
int32_t thisLength,
const UnicodeString& srcText,
int32_t srcStart,
int32_t srcLength) const
{
if(srcText.isBogus()) {
return (int8_t)!isBogus(); // 0 if both are bogus, 1 otherwise
} else {
srcText.pinIndices(srcStart, srcLength);
return doCompareCodePointOrder(start, thisLength, srcText.getArrayStart(), srcStart, srcLength);
}
}
inline int8_t
UnicodeString::compareCodePointOrder(const UnicodeString& text) const
{ return doCompareCodePointOrder(0, length(), text, 0, text.length()); }
inline int8_t
UnicodeString::compareCodePointOrder(int32_t start,
int32_t _length,
const UnicodeString& srcText) const
{ return doCompareCodePointOrder(start, _length, srcText, 0, srcText.length()); }
inline int8_t
UnicodeString::compareCodePointOrder(const UChar *srcChars,
int32_t srcLength) const
{ return doCompareCodePointOrder(0, length(), srcChars, 0, srcLength); }
inline int8_t
UnicodeString::compareCodePointOrder(int32_t start,
int32_t _length,
const UnicodeString& srcText,
int32_t srcStart,
int32_t srcLength) const
{ return doCompareCodePointOrder(start, _length, srcText, srcStart, srcLength); }
inline int8_t
UnicodeString::compareCodePointOrder(int32_t start,
int32_t _length,
const UChar *srcChars) const
{ return doCompareCodePointOrder(start, _length, srcChars, 0, _length); }
inline int8_t
UnicodeString::compareCodePointOrder(int32_t start,
int32_t _length,
const UChar *srcChars,
int32_t srcStart,
int32_t srcLength) const
{ return doCompareCodePointOrder(start, _length, srcChars, srcStart, srcLength); }
inline int8_t
UnicodeString::compareCodePointOrderBetween(int32_t start,
int32_t limit,
const UnicodeString& srcText,
int32_t srcStart,
int32_t srcLimit) const
{ return doCompareCodePointOrder(start, limit - start,
srcText, srcStart, srcLimit - srcStart); }
inline int8_t
UnicodeString::doCaseCompare(int32_t start,
int32_t thisLength,
const UnicodeString &srcText,
int32_t srcStart,
int32_t srcLength,
uint32_t options) const
{
if(srcText.isBogus()) {
return (int8_t)!isBogus(); // 0 if both are bogus, 1 otherwise
} else {
srcText.pinIndices(srcStart, srcLength);
return doCaseCompare(start, thisLength, srcText.getArrayStart(), srcStart, srcLength, options);
}
}
inline int8_t
UnicodeString::caseCompare(const UnicodeString &text, uint32_t options) const {
return doCaseCompare(0, length(), text, 0, text.length(), options);
}
inline int8_t
UnicodeString::caseCompare(int32_t start,
int32_t _length,
const UnicodeString &srcText,
uint32_t options) const {
return doCaseCompare(start, _length, srcText, 0, srcText.length(), options);
}
inline int8_t
UnicodeString::caseCompare(const UChar *srcChars,
int32_t srcLength,
uint32_t options) const {
return doCaseCompare(0, length(), srcChars, 0, srcLength, options);
}
inline int8_t
UnicodeString::caseCompare(int32_t start,
int32_t _length,
const UnicodeString &srcText,
int32_t srcStart,
int32_t srcLength,
uint32_t options) const {
return doCaseCompare(start, _length, srcText, srcStart, srcLength, options);
}
inline int8_t
UnicodeString::caseCompare(int32_t start,
int32_t _length,
const UChar *srcChars,
uint32_t options) const {
return doCaseCompare(start, _length, srcChars, 0, _length, options);
}
inline int8_t
UnicodeString::caseCompare(int32_t start,
int32_t _length,
const UChar *srcChars,
int32_t srcStart,
int32_t srcLength,
uint32_t options) const {
return doCaseCompare(start, _length, srcChars, srcStart, srcLength, options);
}
inline int8_t
UnicodeString::caseCompareBetween(int32_t start,
int32_t limit,
const UnicodeString &srcText,
int32_t srcStart,
int32_t srcLimit,
uint32_t options) const {
return doCaseCompare(start, limit - start, srcText, srcStart, srcLimit - srcStart, options);
}
inline int32_t
UnicodeString::indexOf(const UnicodeString& srcText,
int32_t srcStart,
int32_t srcLength,
int32_t 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 int32_t
UnicodeString::indexOf(const UnicodeString& text) const
{ return indexOf(text, 0, text.length(), 0, length()); }
inline int32_t
UnicodeString::indexOf(const UnicodeString& text,
int32_t start) const {
pinIndex(start);
return indexOf(text, 0, text.length(), start, length() - start);
}
inline int32_t
UnicodeString::indexOf(const UnicodeString& text,
int32_t start,
int32_t _length) const
{ return indexOf(text, 0, text.length(), start, _length); }
inline int32_t
UnicodeString::indexOf(const UChar *srcChars,
int32_t srcLength,
int32_t start) const {
pinIndex(start);
return indexOf(srcChars, 0, srcLength, start, length() - start);
}
inline int32_t
UnicodeString::indexOf(const UChar *srcChars,
int32_t srcLength,
int32_t start,
int32_t _length) const
{ return indexOf(srcChars, 0, srcLength, start, _length); }
inline int32_t
UnicodeString::indexOf(UChar c,
int32_t start,
int32_t _length) const
{ return doIndexOf(c, start, _length); }
inline int32_t
UnicodeString::indexOf(UChar32 c,
int32_t start,
int32_t _length) const
{ return doIndexOf(c, start, _length); }
inline int32_t
UnicodeString::indexOf(UChar c) const
{ return doIndexOf(c, 0, length()); }
inline int32_t
UnicodeString::indexOf(UChar32 c) const
{ return indexOf(c, 0, length()); }
inline int32_t
UnicodeString::indexOf(UChar c,
int32_t start) const {
pinIndex(start);
return doIndexOf(c, start, length() - start);
}
inline int32_t
UnicodeString::indexOf(UChar32 c,
int32_t start) const {
pinIndex(start);
return indexOf(c, start, length() - start);
}
inline int32_t
UnicodeString::lastIndexOf(const UChar *srcChars,
int32_t srcLength,
int32_t start,
int32_t _length) const
{ return lastIndexOf(srcChars, 0, srcLength, start, _length); }
inline int32_t
UnicodeString::lastIndexOf(const UChar *srcChars,
int32_t srcLength,
int32_t start) const {
pinIndex(start);
return lastIndexOf(srcChars, 0, srcLength, start, length() - start);
}
inline int32_t
UnicodeString::lastIndexOf(const UnicodeString& srcText,
int32_t srcStart,
int32_t srcLength,
int32_t 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 int32_t
UnicodeString::lastIndexOf(const UnicodeString& text,
int32_t start,
int32_t _length) const
{ return lastIndexOf(text, 0, text.length(), start, _length); }
inline int32_t
UnicodeString::lastIndexOf(const UnicodeString& text,
int32_t start) const {
pinIndex(start);
return lastIndexOf(text, 0, text.length(), start, length() - start);
}
inline int32_t
UnicodeString::lastIndexOf(const UnicodeString& text) const
{ return lastIndexOf(text, 0, text.length(), 0, length()); }
inline int32_t
UnicodeString::lastIndexOf(UChar c,
int32_t start,
int32_t _length) const
{ return doLastIndexOf(c, start, _length); }
inline int32_t
UnicodeString::lastIndexOf(UChar32 c,
int32_t start,
int32_t _length) const {
return doLastIndexOf(c, start, _length);
}
inline int32_t
UnicodeString::lastIndexOf(UChar c) const
{ return doLastIndexOf(c, 0, length()); }
inline int32_t
UnicodeString::lastIndexOf(UChar32 c) const {
return lastIndexOf(c, 0, length());
}
inline int32_t
UnicodeString::lastIndexOf(UChar c,
int32_t start) const {
pinIndex(start);
return doLastIndexOf(c, start, length() - start);
}
inline int32_t
UnicodeString::lastIndexOf(UChar32 c,
int32_t start) const {
pinIndex(start);
return lastIndexOf(c, start, length() - start);
}
inline UBool
UnicodeString::startsWith(const UnicodeString& text) const
{ return compare(0, text.length(), text, 0, text.length()) == 0; }
inline UBool
UnicodeString::startsWith(const UnicodeString& srcText,
int32_t srcStart,
int32_t srcLength) const
{ return doCompare(0, srcLength, srcText, srcStart, srcLength) == 0; }
inline UBool
UnicodeString::startsWith(const UChar *srcChars, int32_t srcLength) const {
if(srcLength < 0) {
srcLength = u_strlen(srcChars);
}
return doCompare(0, srcLength, srcChars, 0, srcLength) == 0;
}
inline UBool
UnicodeString::startsWith(const UChar *srcChars, int32_t srcStart, int32_t srcLength) const {
if(srcLength < 0) {
srcLength = u_strlen(srcChars);
}
return doCompare(0, srcLength, srcChars, srcStart, srcLength) == 0;
}
inline UBool
UnicodeString::endsWith(const UnicodeString& text) const
{ return doCompare(length() - text.length(), text.length(),
text, 0, text.length()) == 0; }
inline UBool
UnicodeString::endsWith(const UnicodeString& srcText,
int32_t srcStart,
int32_t srcLength) const {
srcText.pinIndices(srcStart, srcLength);
return doCompare(length() - srcLength, srcLength,
srcText, srcStart, srcLength) == 0;
}
inline UBool
UnicodeString::endsWith(const UChar *srcChars,
int32_t srcLength) const {
if(srcLength < 0) {
srcLength = u_strlen(srcChars);
}
return doCompare(length() - srcLength, srcLength,
srcChars, 0, srcLength) == 0;
}
inline UBool
UnicodeString::endsWith(const UChar *srcChars,
int32_t srcStart,
int32_t srcLength) const {
if(srcLength < 0) {
srcLength = u_strlen(srcChars + srcStart);
}
return doCompare(length() - srcLength, srcLength,
srcChars, srcStart, srcLength) == 0;
}
//========================================
// replace
//========================================
inline UnicodeString&
UnicodeString::replace(int32_t start,
int32_t _length,
const UnicodeString& srcText)
{ return doReplace(start, _length, srcText, 0, srcText.length()); }
inline UnicodeString&
UnicodeString::replace(int32_t start,
int32_t _length,
const UnicodeString& srcText,
int32_t srcStart,
int32_t srcLength)
{ return doReplace(start, _length, srcText, srcStart, srcLength); }
inline UnicodeString&
UnicodeString::replace(int32_t start,
int32_t _length,
const UChar *srcChars,
int32_t srcLength)
{ return doReplace(start, _length, srcChars, 0, srcLength); }
inline UnicodeString&
UnicodeString::replace(int32_t start,
int32_t _length,
const UChar *srcChars,
int32_t srcStart,
int32_t srcLength)
{ return doReplace(start, _length, srcChars, srcStart, srcLength); }
inline UnicodeString&
UnicodeString::replace(int32_t start,
int32_t _length,
UChar srcChar)
{ return doReplace(start, _length, &srcChar, 0, 1); }
inline UnicodeString&
UnicodeString::replaceBetween(int32_t start,
int32_t limit,
const UnicodeString& srcText)
{ return doReplace(start, limit - start, srcText, 0, srcText.length()); }
inline UnicodeString&
UnicodeString::replaceBetween(int32_t start,
int32_t limit,
const UnicodeString& srcText,
int32_t srcStart,
int32_t srcLimit)
{ return doReplace(start, limit - start, srcText, srcStart, srcLimit - srcStart); }
inline UnicodeString&
UnicodeString::findAndReplace(const UnicodeString& oldText,
const UnicodeString& newText)
{ return findAndReplace(0, length(), oldText, 0, oldText.length(),
newText, 0, newText.length()); }
inline UnicodeString&
UnicodeString::findAndReplace(int32_t start,
int32_t _length,
const UnicodeString& oldText,
const UnicodeString& newText)
{ return findAndReplace(start, _length, oldText, 0, oldText.length(),
newText, 0, newText.length()); }
// ============================
// extract
// ============================
inline void
UnicodeString::doExtract(int32_t start,
int32_t _length,
UnicodeString& target) const
{ target.replace(0, target.length(), *this, start, _length); }
inline void
UnicodeString::extract(int32_t start,
int32_t _length,
UChar *target,
int32_t targetStart) const
{ doExtract(start, _length, target, targetStart); }
inline void
UnicodeString::extract(int32_t start,
int32_t _length,
UnicodeString& target) const
{ doExtract(start, _length, target); }
#if !UCONFIG_NO_CONVERSION
inline int32_t
UnicodeString::extract(int32_t start,
int32_t _length,
char *dst,
const char *codepage) const
{
// This dstSize value will be checked explicitly
return extract(start, _length, dst, dst!=0 ? 0xffffffff : 0, codepage);
}
#endif
inline void
UnicodeString::extractBetween(int32_t start,
int32_t limit,
UChar *dst,
int32_t dstStart) const {
pinIndex(start);
pinIndex(limit);
doExtract(start, limit - start, dst, dstStart);
}
inline UnicodeString
UnicodeString::tempSubStringBetween(int32_t start, int32_t limit) const {
return tempSubString(start, limit - start);
}
inline UChar
UnicodeString::doCharAt(int32_t offset) const
{
if((uint32_t)offset < (uint32_t)length()) {
return getArrayStart()[offset];
} else {
return kInvalidUChar;
}
}
inline UChar
UnicodeString::charAt(int32_t offset) const
{ return doCharAt(offset); }
inline UChar
UnicodeString::operator[] (int32_t offset) const
{ return doCharAt(offset); }
inline UBool
UnicodeString::isEmpty() const {
return fShortLength == 0;
}
//========================================
// Write implementation methods
//========================================
inline void
UnicodeString::setLength(int32_t len) {
if(len <= 127) {
fShortLength = (int8_t)len;
} else {
fShortLength = (int8_t)-1;
fUnion.fFields.fLength = len;
}
}
inline void
UnicodeString::setToEmpty() {
fShortLength = 0;
fFlags = kShortString;
}
inline void
UnicodeString::setArray(UChar *array, int32_t len, int32_t capacity) {
setLength(len);
fUnion.fFields.fArray = array;
fUnion.fFields.fCapacity = capacity;
}
inline const UChar *
UnicodeString::getTerminatedBuffer() {
if(!isWritable()) {
return 0;
} else {
UChar *array = getArrayStart();
int32_t len = length();
if(len < getCapacity() && ((fFlags&kRefCounted) == 0 || refCount() == 1)) {
/*
* kRefCounted: Do not write the NUL if the buffer is shared.
* That is mostly safe, except when the length of one copy was modified
* without copy-on-write, e.g., via truncate(newLength) or remove(void).
* Then the NUL would be written into the middle of another copy's string.
*/
if(!(fFlags&kBufferIsReadonly)) {
/*
* We must not write to a readonly buffer, but it is known to be
* NUL-terminated if len