1 // natString.cc - Implementation of java.lang.String native methods.
3 /* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 Free Software Foundation
5 This file is part of libgcj.
7 This software is copyrighted work licensed under the terms of the
8 Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
17 #include <java/lang/Character.h>
18 #include <java/lang/CharSequence.h>
19 #include <java/lang/String.h>
20 #include <java/lang/IndexOutOfBoundsException.h>
21 #include <java/lang/ArrayIndexOutOfBoundsException.h>
22 #include <java/lang/StringIndexOutOfBoundsException.h>
23 #include <java/lang/NullPointerException.h>
24 #include <java/lang/StringBuffer.h>
25 #include <java/io/ByteArrayOutputStream.h>
26 #include <java/io/OutputStreamWriter.h>
27 #include <java/io/ByteArrayInputStream.h>
28 #include <java/io/InputStreamReader.h>
29 #include <java/util/Locale.h>
30 #include <gnu/gcj/convert/UnicodeToBytes.h>
31 #include <gnu/gcj/convert/BytesToUnicode.h>
32 #include <gnu/gcj/runtime/StringBuffer.h>
35 static jstring
* strhash
= NULL
;
36 static int strhash_count
= 0; /* Number of slots used in strhash. */
37 static int strhash_size
= 0; /* Number of slots available in strhash.
38 * Assumed be power of 2! */
40 // Some defines used by toUpperCase / toLowerCase.
42 #define CAPITAL_S 0x0053
43 #define SMALL_I 0x0069
44 #define CAPITAL_I_WITH_DOT 0x0130
45 #define SMALL_DOTLESS_I 0x0131
46 #define CAPITAL_I 0x0049
48 #define DELETED_STRING ((jstring)(~0))
49 #define SET_STRING_IS_INTERNED(STR) /* nothing */
51 #define UNMASK_PTR(Ptr) (((unsigned long) (Ptr)) & ~0x01)
52 #define MASK_PTR(Ptr) (((unsigned long) (Ptr)) | 0x01)
53 #define PTR_MASKED(Ptr) (((unsigned long) (Ptr)) & 0x01)
55 /* Find a slot where the string with elements DATA, length LEN,
56 and hash HASH should go in the strhash table of interned strings. */
58 _Jv_StringFindSlot (jchar
* data
, jint len
, jint hash
)
60 JvSynchronize
sync (&java::lang::String::class$
);
62 int start_index
= hash
& (strhash_size
- 1);
63 int deleted_index
= -1;
65 int index
= start_index
;
66 /* step must be non-zero, and relatively prime with strhash_size. */
67 jint step
= (hash
^ (hash
>> 16)) | 1;
70 jstring
* ptr
= &strhash
[index
];
71 jstring value
= (jstring
) UNMASK_PTR (*ptr
);
74 if (deleted_index
>= 0)
75 return (&strhash
[deleted_index
]);
79 else if (*ptr
== DELETED_STRING
)
80 deleted_index
= index
;
81 else if (value
->length() == len
82 && memcmp(JvGetStringChars(value
), data
, 2*len
) == 0)
84 index
= (index
+ step
) & (strhash_size
- 1);
86 while (index
!= start_index
);
87 // Note that we can have INDEX == START_INDEX if the table has no
88 // NULL entries but does have DELETED_STRING entries.
89 JvAssert (deleted_index
>= 0);
90 return &strhash
[deleted_index
];
93 /* Calculate a hash code for the string starting at PTR at given LENGTH.
94 This uses the same formula as specified for java.lang.String.hash. */
97 hashChars (jchar
* ptr
, jint length
)
99 jchar
* limit
= ptr
+ length
;
101 // Updated specification from
102 // http://www.javasoft.com/docs/books/jls/clarify.html.
104 hash
= (31 * hash
) + *ptr
++;
109 java::lang::String::hashCode()
111 if (cachedHashCode
== 0)
112 cachedHashCode
= hashChars(JvGetStringChars(this), length());
113 return cachedHashCode
;
117 _Jv_StringGetSlot (jstring str
)
119 jchar
* data
= JvGetStringChars(str
);
120 int length
= str
->length();
121 return _Jv_StringFindSlot(data
, length
, hashChars (data
, length
));
127 JvSynchronize
sync (&java::lang::String::class$
);
132 strhash
= (jstring
*) _Jv_AllocBytes (strhash_size
* sizeof (jstring
));
136 int i
= strhash_size
;
137 jstring
* ptr
= strhash
+ i
;
138 int nsize
= strhash_size
* 2;
139 jstring
*next
= (jstring
*) _Jv_AllocBytes (nsize
* sizeof (jstring
));
144 if (*ptr
== NULL
|| *ptr
== DELETED_STRING
)
147 /* This is faster equivalent of
148 * *__JvGetInternSlot(*ptr) = *ptr; */
149 jstring val
= (jstring
) UNMASK_PTR (*ptr
);
150 jint hash
= val
->hashCode();
151 jint index
= hash
& (nsize
- 1);
152 jint step
= (hash
^ (hash
>> 16)) | 1;
155 if (next
[index
] == NULL
)
160 index
= (index
+ step
) & (nsize
- 1);
164 strhash_size
= nsize
;
170 java::lang::String::intern()
172 JvSynchronize
sync (&java::lang::String::class$
);
173 if (3 * strhash_count
>= 2 * strhash_size
)
175 jstring
* ptr
= _Jv_StringGetSlot(this);
176 if (*ptr
!= NULL
&& *ptr
!= DELETED_STRING
)
178 // See description in _Jv_FinalizeString() to understand this.
179 *ptr
= (jstring
) MASK_PTR (*ptr
);
180 return (jstring
) UNMASK_PTR (*ptr
);
182 jstring str
= (this->data
== this
184 : _Jv_NewString(JvGetStringChars(this), this->length()));
185 SET_STRING_IS_INTERNED(str
);
188 // When string is GC'd, clear the slot in the hash table.
189 _Jv_RegisterStringFinalizer (str
);
193 // The fake String finalizer. This is only used when the String has
194 // been intern()d. However, we must check this case, as it might be
195 // called by the Reference code for any String.
197 _Jv_FinalizeString (jobject obj
)
199 JvSynchronize
sync (&java::lang::String::class$
);
201 // We might not actually have intern()d any strings at all, if
202 // we're being called from Reference.
206 jstring str
= reinterpret_cast<jstring
> (obj
);
207 jstring
*ptr
= _Jv_StringGetSlot(str
);
208 if (*ptr
== NULL
|| *ptr
== DELETED_STRING
209 || (jobject
) UNMASK_PTR (*ptr
) != obj
)
212 // We assume the lowest bit of the pointer is free for our nefarious
213 // manipulations. What we do is set it to `0' (implicitly) when
214 // interning the String. If we subsequently re-intern the same
215 // String, then we set the bit. When finalizing, if the bit is set
216 // then we clear it and re-register the finalizer. We know this is
217 // a safe approach because both intern() and _Jv_FinalizeString()
218 // acquire the class lock; this bit can't be manipulated when the
219 // lock is not held. So if we are finalizing and the bit is clear
220 // then we know all references are gone and we can clear the entry
221 // in the hash table. The naive approach of simply clearing the
222 // pointer here fails in the case where a request to intern a new
223 // string with the same contents is made between the time the
224 // intern()d string is found to be unreachable and when the
225 // finalizer is actually run. In this case we could clear a pointer
226 // to a valid string, and future intern() calls for that particular
227 // value would spuriously fail.
228 if (PTR_MASKED (*ptr
))
230 *ptr
= (jstring
) UNMASK_PTR (*ptr
);
231 _Jv_RegisterStringFinalizer (obj
);
235 *ptr
= DELETED_STRING
;
241 _Jv_NewStringUTF (const char *bytes
)
243 int size
= strlen (bytes
);
244 unsigned char *p
= (unsigned char *) bytes
;
246 int length
= _Jv_strLengthUtf8 ((char *) p
, size
);
250 jstring jstr
= JvAllocString (length
);
251 jchar
*chrs
= JvGetStringChars (jstr
);
253 p
= (unsigned char *) bytes
;
254 unsigned char *limit
= p
+ size
;
256 *chrs
++ = UTF8_GET (p
, limit
);
262 _Jv_NewStringUtf8Const (Utf8Const
* str
)
267 unsigned char* data
= (unsigned char*) str
->data
;
268 unsigned char* limit
= data
+ str
->length
;
269 int length
= _Jv_strLengthUtf8(str
->data
, str
->length
);
271 if (length
<= (int) (sizeof(buffer
) / sizeof(jchar
)))
278 jstr
= JvAllocString(length
);
279 chrs
= JvGetStringChars(jstr
);
285 jchar ch
= UTF8_GET(data
, limit
);
286 hash
= (31 * hash
) + ch
;
291 JvSynchronize
sync (&java::lang::String::class$
);
292 if (3 * strhash_count
>= 2 * strhash_size
)
294 jstring
* ptr
= _Jv_StringFindSlot (chrs
, length
, hash
);
295 if (*ptr
!= NULL
&& *ptr
!= DELETED_STRING
)
296 return (jstring
) UNMASK_PTR (*ptr
);
300 jstr
= JvAllocString(length
);
301 chrs
= JvGetStringChars(jstr
);
302 memcpy (chrs
, buffer
, sizeof(jchar
)*length
);
304 jstr
->cachedHashCode
= hash
;
306 SET_STRING_IS_INTERNED(jstr
);
307 // When string is GC'd, clear the slot in the hash table. Note that
308 // we don't have to call _Jv_RegisterStringFinalizer here, as we
309 // know the new object cannot be referred to by a Reference.
310 _Jv_RegisterFinalizer ((void *) jstr
, _Jv_FinalizeString
);
315 _Jv_GetStringUTFLength (jstring string
)
318 jchar
*ptr
= JvGetStringChars (string
);
319 jsize i
= string
->length();
323 if (ch
> 0 && ch
<= 0x7F)
325 else if (ch
<= 0x7FF)
333 // Not sure this quite matches GetStringUTFRegion.
334 // null-termination of result? len? throw exception?
336 _Jv_GetStringUTFRegion (jstring str
, jsize start
, jsize len
, char *buf
)
338 jchar
*sptr
= JvGetStringChars (str
) + start
;
344 if (ch
> 0 && ch
<= 0x7F)
346 else if (ch
<= 0x7FF)
348 *dptr
++ = (char) (0xC0 + ((ch
>> 6) & 0x1F));
349 *dptr
++ = (char) (0x80 + (ch
& 0x3F));
353 *dptr
++ = (char) (0xE0 + ((ch
>> 12) & 0xF));
354 *dptr
++ = (char) (0x80 + ((ch
>> 6) & 0x3F));
355 *dptr
++ = (char) (0x80 + (ch
& 0x3F));
361 /* Put printed (decimal) representation of NUM in a buffer.
362 BUFEND marks the end of the buffer, which must be at least 11 jchars long.
363 Returns the COUNT of jchars written. The result is in
364 (BUFEND - COUNT) (inclusive) upto (BUFEND) (exclusive). */
367 _Jv_FormatInt (jchar
* bufend
, jint num
)
369 register jchar
* ptr
= bufend
;
377 // Must be MIN_VALUE, so handle this special case.
378 // FIXME use 'unsigned jint' for num.
388 *--ptr
= (jchar
) ((int) '0' + (num
% 10));
399 java::lang::String::valueOf (jint num
)
401 // Use an array large enough for "-2147483648"; i.e. 11 chars.
403 int i
= _Jv_FormatInt (buffer
+11, num
);
404 return _Jv_NewString (buffer
+11-i
, i
);
408 _Jv_NewString(const jchar
*chars
, jsize len
)
410 jstring str
= _Jv_AllocString(len
);
411 jchar
* data
= JvGetStringChars (str
);
418 _Jv_NewStringLatin1(const char *bytes
, jsize len
)
420 jstring str
= JvAllocString(len
);
421 jchar
* data
= JvGetStringChars (str
);
423 *data
++ = *(unsigned char*)bytes
++;
428 java::lang::String::init(jcharArray chars
, jint offset
, jint count
,
432 throw new NullPointerException
;
433 jsize data_size
= JvGetArrayLength (chars
);
434 if (offset
< 0 || count
< 0 || offset
+ count
< 0
435 || offset
+ count
> data_size
)
436 throw new ArrayIndexOutOfBoundsException
;
441 array
= JvNewCharArray(count
);
442 pdst
= elements (array
);
443 memcpy (pdst
, elements (chars
) + offset
, count
* sizeof (jchar
));
448 pdst
= &(elements(array
)[offset
]);
452 boffset
= (char *) pdst
- (char *) array
;
457 java::lang::String::init(jbyteArray ascii
, jint hibyte
, jint offset
,
461 throw new NullPointerException
;
462 jsize data_size
= JvGetArrayLength (ascii
);
463 if (offset
< 0 || count
< 0 || offset
+ count
< 0
464 || offset
+ count
> data_size
)
465 throw new ArrayIndexOutOfBoundsException
;
466 jcharArray array
= JvNewCharArray(count
);
467 jbyte
*psrc
= elements (ascii
) + offset
;
468 jchar
*pdst
= elements (array
);
470 boffset
= (char *) pdst
- (char *) array
;
472 hibyte
= (hibyte
& 0xff) << 8;
473 while (-- count
>= 0)
475 *pdst
++ = hibyte
| (*psrc
++ & 0xff);
480 java::lang::String::init (jbyteArray bytes
, jint offset
, jint count
,
484 throw new NullPointerException
;
485 jsize data_size
= JvGetArrayLength (bytes
);
486 if (offset
< 0 || count
< 0 || offset
+ count
< 0
487 || offset
+ count
> data_size
)
488 throw new ArrayIndexOutOfBoundsException
;
489 jcharArray array
= JvNewCharArray (count
);
490 gnu::gcj::convert::BytesToUnicode
*converter
491 = gnu::gcj::convert::BytesToUnicode::getDecoder(encoding
);
494 converter
->setInput(bytes
, offset
, offset
+count
);
495 while (converter
->inpos
< converter
->inlength
)
497 int done
= converter
->read(array
, outpos
, avail
);
500 jint new_size
= 2 * (outpos
+ avail
);
501 jcharArray new_array
= JvNewCharArray (new_size
);
502 memcpy (elements (new_array
), elements (array
),
503 outpos
* sizeof(jchar
));
505 avail
= new_size
- outpos
;
515 this->boffset
= (char *) elements (array
) - (char *) array
;
516 this->count
= outpos
;
520 java::lang::String::init (gnu::gcj::runtime::StringBuffer
*buffer
)
522 init (buffer
->value
, 0, buffer
->count
, true);
526 java::lang::String::equals(jobject anObject
)
528 if (anObject
== NULL
)
530 if (anObject
== this)
532 if (anObject
->getClass() != &java::lang::String::class$
)
534 jstring other
= (jstring
) anObject
;
535 if (count
!= other
->count
)
537 /* if both are interned, return false. */
539 jchar
*xptr
= JvGetStringChars (this);
540 jchar
*yptr
= JvGetStringChars (other
);
543 if (*xptr
++ != *yptr
++)
550 java::lang::String::contentEquals(java::lang::StringBuffer
* buffer
)
553 throw new NullPointerException
;
554 JvSynchronize
sync(buffer
);
555 if (count
!= buffer
->count
)
557 if (data
== buffer
->value
)
558 return true; // Possible if shared.
560 jchar
*xptr
= JvGetStringChars(this);
561 jchar
*yptr
= elements(buffer
->value
);
563 if (*xptr
++ != *yptr
++)
569 java::lang::String::contentEquals(java::lang::CharSequence
*seq
)
571 if (seq
->length() != count
)
573 jchar
*value
= JvGetStringChars(this);
574 for (int i
= 0; i
< count
; ++i
)
575 if (value
[i
] != seq
->charAt(i
))
581 java::lang::String::charAt(jint i
)
583 if (i
< 0 || i
>= count
)
584 throw new java::lang::StringIndexOutOfBoundsException(i
);
585 return JvGetStringChars(this)[i
];
589 java::lang::String::getChars(jint srcBegin
, jint srcEnd
,
590 jcharArray dst
, jint dstBegin
)
592 jint dst_length
= JvGetArrayLength (dst
);
593 if (srcBegin
< 0 || srcBegin
> srcEnd
|| srcEnd
> count
)
594 throw new java::lang::StringIndexOutOfBoundsException
;
595 // The 2nd part of the test below is equivalent to
596 // dstBegin + (srcEnd-srcBegin) > dst_length
597 // except that it does not overflow.
598 if (dstBegin
< 0 || dstBegin
> dst_length
- (srcEnd
-srcBegin
))
599 throw new ArrayIndexOutOfBoundsException
;
600 jchar
*dPtr
= elements (dst
) + dstBegin
;
601 jchar
*sPtr
= JvGetStringChars (this) + srcBegin
;
602 jint i
= srcEnd
-srcBegin
;
608 java::lang::String::getBytes (jstring enc
)
610 jint todo
= length();
612 jbyteArray buffer
= JvNewByteArray(todo
);
615 gnu::gcj::convert::UnicodeToBytes
*converter
616 = gnu::gcj::convert::UnicodeToBytes::getEncoder(enc
);
617 while (todo
> 0 || converter
->havePendingBytes())
619 converter
->setOutput(buffer
, bufpos
);
620 int converted
= converter
->write(this, offset
, todo
, NULL
);
621 bufpos
= converter
->count
;
622 if (converted
== 0 && bufpos
== converter
->count
)
625 jbyteArray newbuffer
= JvNewByteArray(buflen
);
626 memcpy (elements (newbuffer
), elements (buffer
), bufpos
);
630 bufpos
= converter
->count
;
636 if (bufpos
== buflen
)
638 jbyteArray result
= JvNewByteArray(bufpos
);
639 memcpy (elements (result
), elements (buffer
), bufpos
);
644 java::lang::String::getBytes(jint srcBegin
, jint srcEnd
,
645 jbyteArray dst
, jint dstBegin
)
647 jint dst_length
= JvGetArrayLength (dst
);
648 if (srcBegin
< 0 || srcBegin
> srcEnd
|| srcEnd
> count
)
649 throw new java::lang::StringIndexOutOfBoundsException
;
650 // The 2nd part of the test below is equivalent to
651 // dstBegin + (srcEnd-srcBegin) > dst_length
652 // except that it does not overflow.
653 if (dstBegin
< 0 || dstBegin
> dst_length
- (srcEnd
-srcBegin
))
654 throw new ArrayIndexOutOfBoundsException
;
655 jbyte
*dPtr
= elements (dst
) + dstBegin
;
656 jchar
*sPtr
= JvGetStringChars (this) + srcBegin
;
657 jint i
= srcEnd
-srcBegin
;
659 *dPtr
++ = (jbyte
) *sPtr
++;
663 java::lang::String::toCharArray()
665 jcharArray array
= JvNewCharArray(count
);
666 jchar
*dPtr
= elements (array
);
667 jchar
*sPtr
= JvGetStringChars (this);
675 java::lang::String::equalsIgnoreCase (jstring anotherString
)
677 if (anotherString
== NULL
|| count
!= anotherString
->count
)
679 jchar
*tptr
= JvGetStringChars (this);
680 jchar
*optr
= JvGetStringChars (anotherString
);
687 && (java::lang::Character::toLowerCase (tch
)
688 != java::lang::Character::toLowerCase (och
))
689 && (java::lang::Character::toUpperCase (tch
)
690 != java::lang::Character::toUpperCase (och
)))
697 java::lang::String::regionMatches (jint toffset
,
698 jstring other
, jint ooffset
, jint len
)
700 if (toffset
< 0 || ooffset
< 0 || len
< 0
701 || toffset
> count
- len
702 || ooffset
> other
->count
- len
)
704 jchar
*tptr
= JvGetStringChars (this) + toffset
;
705 jchar
*optr
= JvGetStringChars (other
) + ooffset
;
709 if (*tptr
++ != *optr
++)
716 java::lang::String::compareTo (jstring anotherString
)
718 jchar
*tptr
= JvGetStringChars (this);
719 jchar
*optr
= JvGetStringChars (anotherString
);
720 jint tlen
= this->count
;
721 jint olen
= anotherString
->count
;
722 jint i
= tlen
> olen
? olen
: tlen
;
728 return (jint
) tch
- (jint
) och
;
734 java::lang::String::regionMatches (jboolean ignoreCase
, jint toffset
,
735 jstring other
, jint ooffset
, jint len
)
737 if (toffset
< 0 || ooffset
< 0 || len
< 0
738 || toffset
> count
- len
739 || ooffset
> other
->count
- len
)
741 jchar
*tptr
= JvGetStringChars (this) + toffset
;
742 jchar
*optr
= JvGetStringChars (other
) + ooffset
;
749 if ((java::lang::Character::toLowerCase (tch
)
750 != java::lang::Character::toLowerCase (och
))
751 && (java::lang::Character::toUpperCase (tch
)
752 != java::lang::Character::toUpperCase (och
)))
767 java::lang::String::startsWith (jstring prefix
, jint toffset
)
769 jint i
= prefix
->count
;
770 if (toffset
< 0 || toffset
> count
- i
)
772 jchar
*xptr
= JvGetStringChars (this) + toffset
;
773 jchar
*yptr
= JvGetStringChars (prefix
);
776 if (*xptr
++ != *yptr
++)
783 java::lang::String::indexOf (jint ch
, jint fromIndex
)
787 jchar
*ptr
= JvGetStringChars(this);
790 if (fromIndex
>= count
)
792 if (ptr
[fromIndex
] == ch
)
798 java::lang::String::indexOf (jstring s
, jint fromIndex
)
800 const jchar
*const xchars
= JvGetStringChars(s
);
801 const jchar
*const ychars
= JvGetStringChars(this) + fromIndex
;
803 const int xlength
= s
->length ();
804 const int ylength
= length () - fromIndex
;
809 while (i
< ylength
&& j
< xlength
)
811 if (xchars
[j
] != ychars
[i
])
821 return fromIndex
+ i
- xlength
;
827 java::lang::String::lastIndexOf (jint ch
, jint fromIndex
)
829 if (fromIndex
>= count
)
830 fromIndex
= count
- 1;
831 jchar
*ptr
= JvGetStringChars(this);
836 if (ptr
[fromIndex
] == ch
)
842 java::lang::String::substring (jint beginIndex
, jint endIndex
)
844 if (beginIndex
< 0 || endIndex
> count
|| beginIndex
> endIndex
)
845 throw new StringIndexOutOfBoundsException
;
846 if (beginIndex
== 0 && endIndex
== count
)
848 jint newCount
= endIndex
- beginIndex
;
849 // For very small strings, just allocate a new one. For other
850 // substrings, allocate a new one unless the substring is over half
851 // of the original string.
852 if (newCount
<= 8 || newCount
< (count
>> 1))
853 return JvNewString(JvGetStringChars(this) + beginIndex
, newCount
);
854 jstring s
= new String();
857 s
->boffset
= boffset
+ sizeof(jchar
) * beginIndex
;
862 java::lang::String::concat(jstring str
)
864 jint str_count
= str
->count
;
867 jstring result
= JvAllocString(count
+ str_count
);
868 jchar
*dstPtr
= JvGetStringChars(result
);
869 jchar
*srcPtr
= JvGetStringChars(this);
872 *dstPtr
++ = *srcPtr
++;
873 srcPtr
= JvGetStringChars(str
);
876 *dstPtr
++ = *srcPtr
++;
881 java::lang::String::replace (jchar oldChar
, jchar newChar
)
884 jchar
* chrs
= JvGetStringChars (this);
889 if (chrs
[i
] == oldChar
)
892 jstring result
= JvAllocString (count
);
893 jchar
*dPtr
= JvGetStringChars (result
);
894 for (int j
= 0; j
< i
; j
++)
896 for (; i
< count
; i
++)
907 java::lang::String::toLowerCase (java::util::Locale
*locale
)
910 jchar
* chrs
= JvGetStringChars(this);
913 bool handle_tr
= false;
916 String
*lang
= locale
->getLanguage ();
917 if (lang
->length () == 2
918 && lang
->charAt (0) == 't'
919 && lang
->charAt (1) == 'r')
927 jchar origChar
= chrs
[i
];
929 if (handle_tr
&& (origChar
== CAPITAL_I
930 || origChar
== CAPITAL_I_WITH_DOT
))
933 ch
= java::lang::Character::toLowerCase(origChar
);
937 jstring result
= JvAllocString(count
);
938 jchar
*dPtr
= JvGetStringChars (result
);
939 for (int j
= 0; j
< i
; j
++)
942 for (; i
< count
; i
++)
944 if (handle_tr
&& chrs
[i
] == CAPITAL_I
)
945 *dPtr
++ = SMALL_DOTLESS_I
;
946 else if (handle_tr
&& chrs
[i
] == CAPITAL_I_WITH_DOT
)
949 *dPtr
++ = java::lang::Character::toLowerCase(chrs
[i
]);
955 java::lang::String::toUpperCase (java::util::Locale
*locale
)
958 jchar
* chrs
= JvGetStringChars(this);
961 // When handling a specific locale there might be special rules.
962 // Currently all existing rules are simply handled inline, as there
963 // are only two and they are documented in the online 1.2 docs.
964 bool handle_esset
= locale
!= NULL
;
965 bool handle_tr
= false;
968 String
*lang
= locale
->getLanguage ();
969 if (lang
->length () == 2
970 && lang
->charAt (0) == 't'
971 && lang
->charAt (1) == 'r')
975 int new_count
= count
;
976 bool new_string
= false;
981 jchar origChar
= chrs
[i
];
983 if (handle_esset
&& origChar
== ESSET
)
988 else if (handle_tr
&& (origChar
== SMALL_I
989 || origChar
== SMALL_DOTLESS_I
))
993 ch
= java::lang::Character::toUpperCase(origChar
);
998 if (new_string
&& ! handle_esset
)
1003 jstring result
= JvAllocString(new_count
);
1004 jchar
*dPtr
= JvGetStringChars (result
);
1005 for (i
= 0; i
< count
; i
++)
1007 if (handle_esset
&& chrs
[i
] == ESSET
)
1009 *dPtr
++ = CAPITAL_S
;
1010 *dPtr
++ = CAPITAL_S
;
1012 else if (handle_tr
&& chrs
[i
] == SMALL_I
)
1013 *dPtr
++ = CAPITAL_I_WITH_DOT
;
1014 else if (handle_tr
&& chrs
[i
] == SMALL_DOTLESS_I
)
1015 *dPtr
++ = CAPITAL_I
;
1017 *dPtr
++ = java::lang::Character::toUpperCase(chrs
[i
]);
1023 java::lang::String::trim ()
1025 jchar
* chrs
= JvGetStringChars(this);
1026 if (count
== 0 || (chrs
[0] > ' ' && chrs
[count
-1] > ' '))
1031 if (preTrim
== count
)
1032 return new String();
1033 if (chrs
[preTrim
] > ' ')
1036 jint endTrim
= count
;
1037 while (chrs
[endTrim
-1] <= ' ')
1039 return substring(preTrim
, endTrim
);
1043 java::lang::String::valueOf(jcharArray data
, jint offset
, jint count
)
1045 jint data_length
= JvGetArrayLength (data
);
1046 if (offset
< 0 || count
< 0 || offset
> data_length
- count
)
1047 throw new ArrayIndexOutOfBoundsException
;
1048 jstring result
= JvAllocString(count
);
1049 jchar
*sPtr
= elements (data
) + offset
;
1050 jchar
*dPtr
= JvGetStringChars(result
);
1051 while (--count
>= 0)
1057 java::lang::String::valueOf(jchar c
)
1059 jstring result
= JvAllocString(1);
1060 JvGetStringChars (result
)[0] = c
;