1 // natString.cc - Implementation of java.lang.String native methods.
3 /* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004 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/String.h>
19 #include <java/lang/IndexOutOfBoundsException.h>
20 #include <java/lang/ArrayIndexOutOfBoundsException.h>
21 #include <java/lang/StringIndexOutOfBoundsException.h>
22 #include <java/lang/NullPointerException.h>
23 #include <java/lang/StringBuffer.h>
24 #include <java/io/ByteArrayOutputStream.h>
25 #include <java/io/OutputStreamWriter.h>
26 #include <java/io/ByteArrayInputStream.h>
27 #include <java/io/InputStreamReader.h>
28 #include <java/util/Locale.h>
29 #include <gnu/gcj/convert/UnicodeToBytes.h>
30 #include <gnu/gcj/convert/BytesToUnicode.h>
31 #include <gnu/gcj/runtime/StringBuffer.h>
34 static jstring
* strhash
= NULL
;
35 static int strhash_count
= 0; /* Number of slots used in strhash. */
36 static int strhash_size
= 0; /* Number of slots available in strhash.
37 * Assumed be power of 2! */
39 // Some defines used by toUpperCase / toLowerCase.
41 #define CAPITAL_S 0x0053
42 #define SMALL_I 0x0069
43 #define CAPITAL_I_WITH_DOT 0x0130
44 #define SMALL_DOTLESS_I 0x0131
45 #define CAPITAL_I 0x0049
47 #define DELETED_STRING ((jstring)(~0))
48 #define SET_STRING_IS_INTERNED(STR) /* nothing */
50 #define UNMASK_PTR(Ptr) (((unsigned long) (Ptr)) & ~0x01)
51 #define MASK_PTR(Ptr) (((unsigned long) (Ptr)) | 0x01)
52 #define PTR_MASKED(Ptr) (((unsigned long) (Ptr)) & 0x01)
54 /* Find a slot where the string with elements DATA, length LEN,
55 and hash HASH should go in the strhash table of interned strings. */
57 _Jv_StringFindSlot (jchar
* data
, jint len
, jint hash
)
59 JvSynchronize
sync (&java::lang::String::class$
);
61 int start_index
= hash
& (strhash_size
- 1);
62 int deleted_index
= -1;
64 int index
= start_index
;
65 /* step must be non-zero, and relatively prime with strhash_size. */
66 jint step
= (hash
^ (hash
>> 16)) | 1;
69 jstring
* ptr
= &strhash
[index
];
70 jstring value
= (jstring
) UNMASK_PTR (*ptr
);
73 if (deleted_index
>= 0)
74 return (&strhash
[deleted_index
]);
78 else if (*ptr
== DELETED_STRING
)
79 deleted_index
= index
;
80 else if (value
->length() == len
81 && memcmp(JvGetStringChars(value
), data
, 2*len
) == 0)
83 index
= (index
+ step
) & (strhash_size
- 1);
84 JvAssert (index
!= start_index
);
88 /* Calculate a hash code for the string starting at PTR at given LENGTH.
89 This uses the same formula as specified for java.lang.String.hash. */
92 hashChars (jchar
* ptr
, jint length
)
94 jchar
* limit
= ptr
+ length
;
96 // Updated specification from
97 // http://www.javasoft.com/docs/books/jls/clarify.html.
99 hash
= (31 * hash
) + *ptr
++;
104 java::lang::String::hashCode()
106 if (cachedHashCode
== 0)
107 cachedHashCode
= hashChars(JvGetStringChars(this), length());
108 return cachedHashCode
;
112 _Jv_StringGetSlot (jstring str
)
114 jchar
* data
= JvGetStringChars(str
);
115 int length
= str
->length();
116 return _Jv_StringFindSlot(data
, length
, hashChars (data
, length
));
122 JvSynchronize
sync (&java::lang::String::class$
);
127 strhash
= (jstring
*) _Jv_AllocBytes (strhash_size
* sizeof (jstring
));
128 memset (strhash
, 0, strhash_size
* sizeof (jstring
));
132 int i
= strhash_size
;
133 jstring
* ptr
= strhash
+ i
;
134 int nsize
= strhash_size
* 2;
135 jstring
*next
= (jstring
*) _Jv_AllocBytes (nsize
* sizeof (jstring
));
136 memset (next
, 0, nsize
* sizeof (jstring
));
141 if (*ptr
== NULL
|| *ptr
== DELETED_STRING
)
144 /* This is faster equivalent of
145 * *__JvGetInternSlot(*ptr) = *ptr; */
146 jstring val
= (jstring
) UNMASK_PTR (*ptr
);
147 jint hash
= val
->hashCode();
148 jint index
= hash
& (nsize
- 1);
149 jint step
= (hash
^ (hash
>> 16)) | 1;
152 if (next
[index
] == NULL
)
157 index
= (index
+ step
) & (nsize
- 1);
161 strhash_size
= nsize
;
167 java::lang::String::intern()
169 JvSynchronize
sync (&java::lang::String::class$
);
170 if (3 * strhash_count
>= 2 * strhash_size
)
172 jstring
* ptr
= _Jv_StringGetSlot(this);
173 if (*ptr
!= NULL
&& *ptr
!= DELETED_STRING
)
175 // See description in _Jv_FinalizeString() to understand this.
176 *ptr
= (jstring
) MASK_PTR (*ptr
);
177 return (jstring
) UNMASK_PTR (*ptr
);
179 jstring str
= (this->data
== this
181 : _Jv_NewString(JvGetStringChars(this), this->length()));
182 SET_STRING_IS_INTERNED(str
);
185 // When string is GC'd, clear the slot in the hash table.
186 _Jv_RegisterStringFinalizer (str
);
190 // The fake String finalizer. This is only used when the String has
191 // been intern()d. However, we must check this case, as it might be
192 // called by the Reference code for any String.
194 _Jv_FinalizeString (jobject obj
)
196 JvSynchronize
sync (&java::lang::String::class$
);
198 // We might not actually have intern()d any strings at all, if
199 // we're being called from Reference.
203 jstring str
= reinterpret_cast<jstring
> (obj
);
204 jstring
*ptr
= _Jv_StringGetSlot(str
);
205 if (*ptr
== NULL
|| *ptr
== DELETED_STRING
206 || (jobject
) UNMASK_PTR (*ptr
) != obj
)
209 // We assume the lowest bit of the pointer is free for our nefarious
210 // manipulations. What we do is set it to `0' (implicitly) when
211 // interning the String. If we subsequently re-intern the same
212 // String, then we set the bit. When finalizing, if the bit is set
213 // then we clear it and re-register the finalizer. We know this is
214 // a safe approach because both intern() and _Jv_FinalizeString()
215 // acquire the class lock; this bit can't be manipulated when the
216 // lock is not held. So if we are finalizing and the bit is clear
217 // then we know all references are gone and we can clear the entry
218 // in the hash table. The naive approach of simply clearing the
219 // pointer here fails in the case where a request to intern a new
220 // string with the same contents is made between the time the
221 // intern()d string is found to be unreachable and when the
222 // finalizer is actually run. In this case we could clear a pointer
223 // to a valid string, and future intern() calls for that particular
224 // value would spuriously fail.
225 if (PTR_MASKED (*ptr
))
227 *ptr
= (jstring
) UNMASK_PTR (*ptr
);
228 _Jv_RegisterStringFinalizer (obj
);
232 *ptr
= DELETED_STRING
;
238 _Jv_NewStringUTF (const char *bytes
)
240 int size
= strlen (bytes
);
241 unsigned char *p
= (unsigned char *) bytes
;
243 int length
= _Jv_strLengthUtf8 ((char *) p
, size
);
247 jstring jstr
= JvAllocString (length
);
248 jchar
*chrs
= JvGetStringChars (jstr
);
250 p
= (unsigned char *) bytes
;
251 unsigned char *limit
= p
+ size
;
253 *chrs
++ = UTF8_GET (p
, limit
);
259 _Jv_NewStringUtf8Const (Utf8Const
* str
)
264 unsigned char* data
= (unsigned char*) str
->data
;
265 unsigned char* limit
= data
+ str
->length
;
266 int length
= _Jv_strLengthUtf8(str
->data
, str
->length
);
268 if (length
<= (int) (sizeof(buffer
) / sizeof(jchar
)))
275 jstr
= JvAllocString(length
);
276 chrs
= JvGetStringChars(jstr
);
282 jchar ch
= UTF8_GET(data
, limit
);
283 hash
= (31 * hash
) + ch
;
288 JvSynchronize
sync (&java::lang::String::class$
);
289 if (3 * strhash_count
>= 2 * strhash_size
)
291 jstring
* ptr
= _Jv_StringFindSlot (chrs
, length
, hash
);
292 if (*ptr
!= NULL
&& *ptr
!= DELETED_STRING
)
293 return (jstring
) UNMASK_PTR (*ptr
);
297 jstr
= JvAllocString(length
);
298 chrs
= JvGetStringChars(jstr
);
299 memcpy (chrs
, buffer
, sizeof(jchar
)*length
);
301 jstr
->cachedHashCode
= hash
;
303 SET_STRING_IS_INTERNED(jstr
);
304 // When string is GC'd, clear the slot in the hash table. Note that
305 // we don't have to call _Jv_RegisterStringFinalizer here, as we
306 // know the new object cannot be referred to by a Reference.
307 _Jv_RegisterFinalizer ((void *) jstr
, _Jv_FinalizeString
);
312 _Jv_GetStringUTFLength (jstring string
)
315 jchar
*ptr
= JvGetStringChars (string
);
316 jsize i
= string
->length();
320 if (ch
> 0 && ch
<= 0x7F)
322 else if (ch
<= 0x7FF)
330 // Not sure this quite matches GetStringUTFRegion.
331 // null-termination of result? len? throw exception?
333 _Jv_GetStringUTFRegion (jstring str
, jsize start
, jsize len
, char *buf
)
335 jchar
*sptr
= JvGetStringChars (str
) + start
;
341 if (ch
> 0 && ch
<= 0x7F)
343 else if (ch
<= 0x7FF)
345 *dptr
++ = (char) (0xC0 + ((ch
>> 6) & 0x1F));
346 *dptr
++ = (char) (0x80 + (ch
& 0x3F));
350 *dptr
++ = (char) (0xE0 + ((ch
>> 12) & 0xF));
351 *dptr
++ = (char) (0x80 + ((ch
>> 6) & 0x3F));
352 *dptr
++ = (char) (0x80 + (ch
& 0x3F));
358 /* Put printed (decimal) representation of NUM in a buffer.
359 BUFEND marks the end of the buffer, which must be at least 11 jchars long.
360 Returns the COUNT of jchars written. The result is in
361 (BUFEND - COUNT) (inclusive) upto (BUFEND) (exclusive). */
364 _Jv_FormatInt (jchar
* bufend
, jint num
)
366 register jchar
* ptr
= bufend
;
374 // Must be MIN_VALUE, so handle this special case.
375 // FIXME use 'unsigned jint' for num.
385 *--ptr
= (jchar
) ((int) '0' + (num
% 10));
396 java::lang::String::valueOf (jint num
)
398 // Use an array large enough for "-2147483648"; i.e. 11 chars.
400 int i
= _Jv_FormatInt (buffer
+11, num
);
401 return _Jv_NewString (buffer
+11-i
, i
);
405 _Jv_NewString(const jchar
*chars
, jsize len
)
407 jstring str
= _Jv_AllocString(len
);
408 jchar
* data
= JvGetStringChars (str
);
415 _Jv_NewStringLatin1(const char *bytes
, jsize len
)
417 jstring str
= JvAllocString(len
);
418 jchar
* data
= JvGetStringChars (str
);
420 *data
++ = *(unsigned char*)bytes
++;
425 java::lang::String::init(jcharArray chars
, jint offset
, jint count
,
429 throw new NullPointerException
;
430 jsize data_size
= JvGetArrayLength (chars
);
431 if (offset
< 0 || count
< 0 || offset
+ count
< 0
432 || offset
+ count
> data_size
)
433 throw new ArrayIndexOutOfBoundsException
;
438 array
= JvNewCharArray(count
);
439 pdst
= elements (array
);
440 memcpy (pdst
, elements (chars
) + offset
, count
* sizeof (jchar
));
445 pdst
= &(elements(array
)[offset
]);
449 boffset
= (char *) pdst
- (char *) array
;
454 java::lang::String::init(jbyteArray ascii
, jint hibyte
, jint offset
,
458 throw new NullPointerException
;
459 jsize data_size
= JvGetArrayLength (ascii
);
460 if (offset
< 0 || count
< 0 || offset
+ count
< 0
461 || offset
+ count
> data_size
)
462 throw new ArrayIndexOutOfBoundsException
;
463 jcharArray array
= JvNewCharArray(count
);
464 jbyte
*psrc
= elements (ascii
) + offset
;
465 jchar
*pdst
= elements (array
);
467 boffset
= (char *) pdst
- (char *) array
;
469 hibyte
= (hibyte
& 0xff) << 8;
470 while (-- count
>= 0)
472 *pdst
++ = hibyte
| (*psrc
++ & 0xff);
477 java::lang::String::init (jbyteArray bytes
, jint offset
, jint count
,
481 throw new NullPointerException
;
482 jsize data_size
= JvGetArrayLength (bytes
);
483 if (offset
< 0 || count
< 0 || offset
+ count
< 0
484 || offset
+ count
> data_size
)
485 throw new ArrayIndexOutOfBoundsException
;
486 jcharArray array
= JvNewCharArray (count
);
487 gnu::gcj::convert::BytesToUnicode
*converter
488 = gnu::gcj::convert::BytesToUnicode::getDecoder(encoding
);
491 converter
->setInput(bytes
, offset
, offset
+count
);
492 while (converter
->inpos
< converter
->inlength
)
494 int done
= converter
->read(array
, outpos
, avail
);
497 jint new_size
= 2 * (outpos
+ avail
);
498 jcharArray new_array
= JvNewCharArray (new_size
);
499 memcpy (elements (new_array
), elements (array
),
500 outpos
* sizeof(jchar
));
502 avail
= new_size
- outpos
;
512 this->boffset
= (char *) elements (array
) - (char *) array
;
513 this->count
= outpos
;
517 java::lang::String::init (gnu::gcj::runtime::StringBuffer
*buffer
)
519 init (buffer
->value
, 0, buffer
->count
, true);
523 java::lang::String::equals(jobject anObject
)
525 if (anObject
== NULL
)
527 if (anObject
== this)
529 if (anObject
->getClass() != &java::lang::String::class$
)
531 jstring other
= (jstring
) anObject
;
532 if (count
!= other
->count
)
534 /* if both are interned, return false. */
536 jchar
*xptr
= JvGetStringChars (this);
537 jchar
*yptr
= JvGetStringChars (other
);
540 if (*xptr
++ != *yptr
++)
547 java::lang::String::contentEquals(java::lang::StringBuffer
* buffer
)
550 throw new NullPointerException
;
551 JvSynchronize
sync(buffer
);
552 if (count
!= buffer
->count
)
554 if (data
== buffer
->value
)
555 return true; // Possible if shared.
557 jchar
*xptr
= JvGetStringChars(this);
558 jchar
*yptr
= elements(buffer
->value
);
560 if (*xptr
++ != *yptr
++)
566 java::lang::String::charAt(jint i
)
568 if (i
< 0 || i
>= count
)
569 throw new java::lang::StringIndexOutOfBoundsException(i
);
570 return JvGetStringChars(this)[i
];
574 java::lang::String::getChars(jint srcBegin
, jint srcEnd
,
575 jcharArray dst
, jint dstBegin
)
577 jint dst_length
= JvGetArrayLength (dst
);
578 if (srcBegin
< 0 || srcBegin
> srcEnd
|| srcEnd
> count
)
579 throw new java::lang::StringIndexOutOfBoundsException
;
580 // The 2nd part of the test below is equivalent to
581 // dstBegin + (srcEnd-srcBegin) > dst_length
582 // except that it does not overflow.
583 if (dstBegin
< 0 || dstBegin
> dst_length
- (srcEnd
-srcBegin
))
584 throw new ArrayIndexOutOfBoundsException
;
585 jchar
*dPtr
= elements (dst
) + dstBegin
;
586 jchar
*sPtr
= JvGetStringChars (this) + srcBegin
;
587 jint i
= srcEnd
-srcBegin
;
593 java::lang::String::getBytes (jstring enc
)
595 jint todo
= length();
597 jbyteArray buffer
= JvNewByteArray(todo
);
600 gnu::gcj::convert::UnicodeToBytes
*converter
601 = gnu::gcj::convert::UnicodeToBytes::getEncoder(enc
);
602 while (todo
> 0 || converter
->havePendingBytes())
604 converter
->setOutput(buffer
, bufpos
);
605 int converted
= converter
->write(this, offset
, todo
, NULL
);
606 bufpos
= converter
->count
;
607 if (converted
== 0 && bufpos
== converter
->count
)
610 jbyteArray newbuffer
= JvNewByteArray(buflen
);
611 memcpy (elements (newbuffer
), elements (buffer
), bufpos
);
615 bufpos
= converter
->count
;
621 if (bufpos
== buflen
)
623 jbyteArray result
= JvNewByteArray(bufpos
);
624 memcpy (elements (result
), elements (buffer
), bufpos
);
629 java::lang::String::getBytes(jint srcBegin
, jint srcEnd
,
630 jbyteArray dst
, jint dstBegin
)
632 jint dst_length
= JvGetArrayLength (dst
);
633 if (srcBegin
< 0 || srcBegin
> srcEnd
|| srcEnd
> count
)
634 throw new java::lang::StringIndexOutOfBoundsException
;
635 // The 2nd part of the test below is equivalent to
636 // dstBegin + (srcEnd-srcBegin) > dst_length
637 // except that it does not overflow.
638 if (dstBegin
< 0 || dstBegin
> dst_length
- (srcEnd
-srcBegin
))
639 throw new ArrayIndexOutOfBoundsException
;
640 jbyte
*dPtr
= elements (dst
) + dstBegin
;
641 jchar
*sPtr
= JvGetStringChars (this) + srcBegin
;
642 jint i
= srcEnd
-srcBegin
;
644 *dPtr
++ = (jbyte
) *sPtr
++;
648 java::lang::String::toCharArray()
650 jcharArray array
= JvNewCharArray(count
);
651 jchar
*dPtr
= elements (array
);
652 jchar
*sPtr
= JvGetStringChars (this);
660 java::lang::String::equalsIgnoreCase (jstring anotherString
)
662 if (anotherString
== NULL
|| count
!= anotherString
->count
)
664 jchar
*tptr
= JvGetStringChars (this);
665 jchar
*optr
= JvGetStringChars (anotherString
);
672 && (java::lang::Character::toLowerCase (tch
)
673 != java::lang::Character::toLowerCase (och
))
674 && (java::lang::Character::toUpperCase (tch
)
675 != java::lang::Character::toUpperCase (och
)))
682 java::lang::String::regionMatches (jint toffset
,
683 jstring other
, jint ooffset
, jint len
)
685 if (toffset
< 0 || ooffset
< 0 || len
< 0
686 || toffset
> count
- len
687 || ooffset
> other
->count
- len
)
689 jchar
*tptr
= JvGetStringChars (this) + toffset
;
690 jchar
*optr
= JvGetStringChars (other
) + ooffset
;
694 if (*tptr
++ != *optr
++)
701 java::lang::String::compareTo (jstring anotherString
)
703 jchar
*tptr
= JvGetStringChars (this);
704 jchar
*optr
= JvGetStringChars (anotherString
);
705 jint tlen
= this->count
;
706 jint olen
= anotherString
->count
;
707 jint i
= tlen
> olen
? olen
: tlen
;
713 return (jint
) tch
- (jint
) och
;
719 java::lang::String::regionMatches (jboolean ignoreCase
, jint toffset
,
720 jstring other
, jint ooffset
, jint len
)
722 if (toffset
< 0 || ooffset
< 0 || len
< 0
723 || toffset
> count
- len
724 || ooffset
> other
->count
- len
)
726 jchar
*tptr
= JvGetStringChars (this) + toffset
;
727 jchar
*optr
= JvGetStringChars (other
) + ooffset
;
734 if ((java::lang::Character::toLowerCase (tch
)
735 != java::lang::Character::toLowerCase (och
))
736 && (java::lang::Character::toUpperCase (tch
)
737 != java::lang::Character::toUpperCase (och
)))
752 java::lang::String::startsWith (jstring prefix
, jint toffset
)
754 jint i
= prefix
->count
;
755 if (toffset
< 0 || toffset
> count
- i
)
757 jchar
*xptr
= JvGetStringChars (this) + toffset
;
758 jchar
*yptr
= JvGetStringChars (prefix
);
761 if (*xptr
++ != *yptr
++)
768 java::lang::String::indexOf (jint ch
, jint fromIndex
)
772 jchar
*ptr
= JvGetStringChars(this);
775 if (fromIndex
>= count
)
777 if (ptr
[fromIndex
] == ch
)
783 java::lang::String::indexOf (jstring s
, jint fromIndex
)
785 const jchar
*const xchars
= JvGetStringChars(s
);
786 const jchar
*const ychars
= JvGetStringChars(this) + fromIndex
;
788 const int xlength
= s
->length ();
789 const int ylength
= length () - fromIndex
;
794 while (i
< ylength
&& j
< xlength
)
796 if (xchars
[j
] != ychars
[i
])
806 return fromIndex
+ i
- xlength
;
812 java::lang::String::lastIndexOf (jint ch
, jint fromIndex
)
814 if (fromIndex
>= count
)
815 fromIndex
= count
- 1;
816 jchar
*ptr
= JvGetStringChars(this);
821 if (ptr
[fromIndex
] == ch
)
827 java::lang::String::substring (jint beginIndex
, jint endIndex
)
829 if (beginIndex
< 0 || endIndex
> count
|| beginIndex
> endIndex
)
830 throw new StringIndexOutOfBoundsException
;
831 if (beginIndex
== 0 && endIndex
== count
)
833 jint newCount
= endIndex
- beginIndex
;
834 if (newCount
<= 8) // Optimization, mainly for GC.
835 return JvNewString(JvGetStringChars(this) + beginIndex
, newCount
);
836 jstring s
= new String();
839 s
->boffset
= boffset
+ sizeof(jchar
) * beginIndex
;
844 java::lang::String::concat(jstring str
)
846 jint str_count
= str
->count
;
849 jstring result
= JvAllocString(count
+ str_count
);
850 jchar
*dstPtr
= JvGetStringChars(result
);
851 jchar
*srcPtr
= JvGetStringChars(this);
854 *dstPtr
++ = *srcPtr
++;
855 srcPtr
= JvGetStringChars(str
);
858 *dstPtr
++ = *srcPtr
++;
863 java::lang::String::replace (jchar oldChar
, jchar newChar
)
866 jchar
* chrs
= JvGetStringChars (this);
871 if (chrs
[i
] == oldChar
)
874 jstring result
= JvAllocString (count
);
875 jchar
*dPtr
= JvGetStringChars (result
);
876 for (int j
= 0; j
< i
; j
++)
878 for (; i
< count
; i
++)
889 java::lang::String::toLowerCase (java::util::Locale
*locale
)
892 jchar
* chrs
= JvGetStringChars(this);
895 bool handle_tr
= false;
898 String
*lang
= locale
->getLanguage ();
899 if (lang
->length () == 2
900 && lang
->charAt (0) == 't'
901 && lang
->charAt (1) == 'r')
909 jchar origChar
= chrs
[i
];
911 if (handle_tr
&& (origChar
== CAPITAL_I
912 || origChar
== CAPITAL_I_WITH_DOT
))
915 ch
= java::lang::Character::toLowerCase(origChar
);
919 jstring result
= JvAllocString(count
);
920 jchar
*dPtr
= JvGetStringChars (result
);
921 for (int j
= 0; j
< i
; j
++)
924 for (; i
< count
; i
++)
926 if (handle_tr
&& chrs
[i
] == CAPITAL_I
)
927 *dPtr
++ = SMALL_DOTLESS_I
;
928 else if (handle_tr
&& chrs
[i
] == CAPITAL_I_WITH_DOT
)
931 *dPtr
++ = java::lang::Character::toLowerCase(chrs
[i
]);
937 java::lang::String::toUpperCase (java::util::Locale
*locale
)
940 jchar
* chrs
= JvGetStringChars(this);
943 // When handling a specific locale there might be special rules.
944 // Currently all existing rules are simply handled inline, as there
945 // are only two and they are documented in the online 1.2 docs.
946 bool handle_esset
= locale
!= NULL
;
947 bool handle_tr
= false;
950 String
*lang
= locale
->getLanguage ();
951 if (lang
->length () == 2
952 && lang
->charAt (0) == 't'
953 && lang
->charAt (1) == 'r')
957 int new_count
= count
;
958 bool new_string
= false;
963 jchar origChar
= chrs
[i
];
965 if (handle_esset
&& origChar
== ESSET
)
970 else if (handle_tr
&& (origChar
== SMALL_I
971 || origChar
== SMALL_DOTLESS_I
))
975 ch
= java::lang::Character::toUpperCase(origChar
);
980 if (new_string
&& ! handle_esset
)
985 jstring result
= JvAllocString(new_count
);
986 jchar
*dPtr
= JvGetStringChars (result
);
987 for (i
= 0; i
< count
; i
++)
989 if (handle_esset
&& chrs
[i
] == ESSET
)
994 else if (handle_tr
&& chrs
[i
] == SMALL_I
)
995 *dPtr
++ = CAPITAL_I_WITH_DOT
;
996 else if (handle_tr
&& chrs
[i
] == SMALL_DOTLESS_I
)
999 *dPtr
++ = java::lang::Character::toUpperCase(chrs
[i
]);
1005 java::lang::String::trim ()
1007 jchar
* chrs
= JvGetStringChars(this);
1008 if (count
== 0 || (chrs
[0] > ' ' && chrs
[count
-1] > ' '))
1013 if (preTrim
== count
)
1014 return new String();
1015 if (chrs
[preTrim
] > ' ')
1018 jint endTrim
= count
;
1019 while (chrs
[endTrim
-1] <= ' ')
1021 return substring(preTrim
, endTrim
);
1025 java::lang::String::valueOf(jcharArray data
, jint offset
, jint count
)
1027 jint data_length
= JvGetArrayLength (data
);
1028 if (offset
< 0 || count
< 0 || offset
> data_length
- count
)
1029 throw new ArrayIndexOutOfBoundsException
;
1030 jstring result
= JvAllocString(count
);
1031 jchar
*sPtr
= elements (data
) + offset
;
1032 jchar
*dPtr
= JvGetStringChars(result
);
1033 while (--count
>= 0)
1039 java::lang::String::valueOf(jchar c
)
1041 jstring result
= JvAllocString(1);
1042 JvGetStringChars (result
)[0] = c
;