1 // natString.cc - Implementation of java.lang.String native methods.
3 /* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 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);
85 while (index
!= start_index
);
86 // Note that we can have INDEX == START_INDEX if the table has no
87 // NULL entries but does have DELETED_STRING entries.
88 JvAssert (deleted_index
>= 0);
89 return &strhash
[deleted_index
];
92 /* Calculate a hash code for the string starting at PTR at given LENGTH.
93 This uses the same formula as specified for java.lang.String.hash. */
96 hashChars (jchar
* ptr
, jint length
)
98 jchar
* limit
= ptr
+ length
;
100 // Updated specification from
101 // http://www.javasoft.com/docs/books/jls/clarify.html.
103 hash
= (31 * hash
) + *ptr
++;
108 java::lang::String::hashCode()
110 if (cachedHashCode
== 0)
111 cachedHashCode
= hashChars(JvGetStringChars(this), length());
112 return cachedHashCode
;
116 _Jv_StringGetSlot (jstring str
)
118 jchar
* data
= JvGetStringChars(str
);
119 int length
= str
->length();
120 return _Jv_StringFindSlot(data
, length
, hashChars (data
, length
));
126 JvSynchronize
sync (&java::lang::String::class$
);
131 strhash
= (jstring
*) _Jv_AllocBytes (strhash_size
* sizeof (jstring
));
135 int i
= strhash_size
;
136 jstring
* ptr
= strhash
+ i
;
137 int nsize
= strhash_size
* 2;
138 jstring
*next
= (jstring
*) _Jv_AllocBytes (nsize
* sizeof (jstring
));
143 if (*ptr
== NULL
|| *ptr
== DELETED_STRING
)
146 /* This is faster equivalent of
147 * *__JvGetInternSlot(*ptr) = *ptr; */
148 jstring val
= (jstring
) UNMASK_PTR (*ptr
);
149 jint hash
= val
->hashCode();
150 jint index
= hash
& (nsize
- 1);
151 jint step
= (hash
^ (hash
>> 16)) | 1;
154 if (next
[index
] == NULL
)
159 index
= (index
+ step
) & (nsize
- 1);
163 strhash_size
= nsize
;
169 java::lang::String::intern()
171 JvSynchronize
sync (&java::lang::String::class$
);
172 if (3 * strhash_count
>= 2 * strhash_size
)
174 jstring
* ptr
= _Jv_StringGetSlot(this);
175 if (*ptr
!= NULL
&& *ptr
!= DELETED_STRING
)
177 // See description in _Jv_FinalizeString() to understand this.
178 *ptr
= (jstring
) MASK_PTR (*ptr
);
179 return (jstring
) UNMASK_PTR (*ptr
);
181 jstring str
= (this->data
== this
183 : _Jv_NewString(JvGetStringChars(this), this->length()));
184 SET_STRING_IS_INTERNED(str
);
187 // When string is GC'd, clear the slot in the hash table.
188 _Jv_RegisterStringFinalizer (str
);
192 // The fake String finalizer. This is only used when the String has
193 // been intern()d. However, we must check this case, as it might be
194 // called by the Reference code for any String.
196 _Jv_FinalizeString (jobject obj
)
198 JvSynchronize
sync (&java::lang::String::class$
);
200 // We might not actually have intern()d any strings at all, if
201 // we're being called from Reference.
205 jstring str
= reinterpret_cast<jstring
> (obj
);
206 jstring
*ptr
= _Jv_StringGetSlot(str
);
207 if (*ptr
== NULL
|| *ptr
== DELETED_STRING
208 || (jobject
) UNMASK_PTR (*ptr
) != obj
)
211 // We assume the lowest bit of the pointer is free for our nefarious
212 // manipulations. What we do is set it to `0' (implicitly) when
213 // interning the String. If we subsequently re-intern the same
214 // String, then we set the bit. When finalizing, if the bit is set
215 // then we clear it and re-register the finalizer. We know this is
216 // a safe approach because both intern() and _Jv_FinalizeString()
217 // acquire the class lock; this bit can't be manipulated when the
218 // lock is not held. So if we are finalizing and the bit is clear
219 // then we know all references are gone and we can clear the entry
220 // in the hash table. The naive approach of simply clearing the
221 // pointer here fails in the case where a request to intern a new
222 // string with the same contents is made between the time the
223 // intern()d string is found to be unreachable and when the
224 // finalizer is actually run. In this case we could clear a pointer
225 // to a valid string, and future intern() calls for that particular
226 // value would spuriously fail.
227 if (PTR_MASKED (*ptr
))
229 *ptr
= (jstring
) UNMASK_PTR (*ptr
);
230 _Jv_RegisterStringFinalizer (obj
);
234 *ptr
= DELETED_STRING
;
240 _Jv_NewStringUTF (const char *bytes
)
242 int size
= strlen (bytes
);
243 unsigned char *p
= (unsigned char *) bytes
;
245 int length
= _Jv_strLengthUtf8 ((char *) p
, size
);
249 jstring jstr
= JvAllocString (length
);
250 jchar
*chrs
= JvGetStringChars (jstr
);
252 p
= (unsigned char *) bytes
;
253 unsigned char *limit
= p
+ size
;
255 *chrs
++ = UTF8_GET (p
, limit
);
261 _Jv_NewStringUtf8Const (Utf8Const
* str
)
266 unsigned char* data
= (unsigned char*) str
->data
;
267 unsigned char* limit
= data
+ str
->length
;
268 int length
= _Jv_strLengthUtf8(str
->data
, str
->length
);
270 if (length
<= (int) (sizeof(buffer
) / sizeof(jchar
)))
277 jstr
= JvAllocString(length
);
278 chrs
= JvGetStringChars(jstr
);
284 jchar ch
= UTF8_GET(data
, limit
);
285 hash
= (31 * hash
) + ch
;
290 JvSynchronize
sync (&java::lang::String::class$
);
291 if (3 * strhash_count
>= 2 * strhash_size
)
293 jstring
* ptr
= _Jv_StringFindSlot (chrs
, length
, hash
);
294 if (*ptr
!= NULL
&& *ptr
!= DELETED_STRING
)
295 return (jstring
) UNMASK_PTR (*ptr
);
299 jstr
= JvAllocString(length
);
300 chrs
= JvGetStringChars(jstr
);
301 memcpy (chrs
, buffer
, sizeof(jchar
)*length
);
303 jstr
->cachedHashCode
= hash
;
305 SET_STRING_IS_INTERNED(jstr
);
306 // When string is GC'd, clear the slot in the hash table. Note that
307 // we don't have to call _Jv_RegisterStringFinalizer here, as we
308 // know the new object cannot be referred to by a Reference.
309 _Jv_RegisterFinalizer ((void *) jstr
, _Jv_FinalizeString
);
314 _Jv_GetStringUTFLength (jstring string
)
317 jchar
*ptr
= JvGetStringChars (string
);
318 jsize i
= string
->length();
322 if (ch
> 0 && ch
<= 0x7F)
324 else if (ch
<= 0x7FF)
332 // Not sure this quite matches GetStringUTFRegion.
333 // null-termination of result? len? throw exception?
335 _Jv_GetStringUTFRegion (jstring str
, jsize start
, jsize len
, char *buf
)
337 jchar
*sptr
= JvGetStringChars (str
) + start
;
343 if (ch
> 0 && ch
<= 0x7F)
345 else if (ch
<= 0x7FF)
347 *dptr
++ = (char) (0xC0 + ((ch
>> 6) & 0x1F));
348 *dptr
++ = (char) (0x80 + (ch
& 0x3F));
352 *dptr
++ = (char) (0xE0 + ((ch
>> 12) & 0xF));
353 *dptr
++ = (char) (0x80 + ((ch
>> 6) & 0x3F));
354 *dptr
++ = (char) (0x80 + (ch
& 0x3F));
360 /* Put printed (decimal) representation of NUM in a buffer.
361 BUFEND marks the end of the buffer, which must be at least 11 jchars long.
362 Returns the COUNT of jchars written. The result is in
363 (BUFEND - COUNT) (inclusive) upto (BUFEND) (exclusive). */
366 _Jv_FormatInt (jchar
* bufend
, jint num
)
368 register jchar
* ptr
= bufend
;
376 // Must be MIN_VALUE, so handle this special case.
377 // FIXME use 'unsigned jint' for num.
387 *--ptr
= (jchar
) ((int) '0' + (num
% 10));
398 java::lang::String::valueOf (jint num
)
400 // Use an array large enough for "-2147483648"; i.e. 11 chars.
402 int i
= _Jv_FormatInt (buffer
+11, num
);
403 return _Jv_NewString (buffer
+11-i
, i
);
407 _Jv_NewString(const jchar
*chars
, jsize len
)
409 jstring str
= _Jv_AllocString(len
);
410 jchar
* data
= JvGetStringChars (str
);
417 _Jv_NewStringLatin1(const char *bytes
, jsize len
)
419 jstring str
= JvAllocString(len
);
420 jchar
* data
= JvGetStringChars (str
);
422 *data
++ = *(unsigned char*)bytes
++;
427 java::lang::String::init(jcharArray chars
, jint offset
, jint count
,
431 throw new NullPointerException
;
432 jsize data_size
= JvGetArrayLength (chars
);
433 if (offset
< 0 || count
< 0 || offset
+ count
< 0
434 || offset
+ count
> data_size
)
435 throw new ArrayIndexOutOfBoundsException
;
440 array
= JvNewCharArray(count
);
441 pdst
= elements (array
);
442 memcpy (pdst
, elements (chars
) + offset
, count
* sizeof (jchar
));
447 pdst
= &(elements(array
)[offset
]);
451 boffset
= (char *) pdst
- (char *) array
;
456 java::lang::String::init(jbyteArray ascii
, jint hibyte
, jint offset
,
460 throw new NullPointerException
;
461 jsize data_size
= JvGetArrayLength (ascii
);
462 if (offset
< 0 || count
< 0 || offset
+ count
< 0
463 || offset
+ count
> data_size
)
464 throw new ArrayIndexOutOfBoundsException
;
465 jcharArray array
= JvNewCharArray(count
);
466 jbyte
*psrc
= elements (ascii
) + offset
;
467 jchar
*pdst
= elements (array
);
469 boffset
= (char *) pdst
- (char *) array
;
471 hibyte
= (hibyte
& 0xff) << 8;
472 while (-- count
>= 0)
474 *pdst
++ = hibyte
| (*psrc
++ & 0xff);
479 java::lang::String::init (jbyteArray bytes
, jint offset
, jint count
,
483 throw new NullPointerException
;
484 jsize data_size
= JvGetArrayLength (bytes
);
485 if (offset
< 0 || count
< 0 || offset
+ count
< 0
486 || offset
+ count
> data_size
)
487 throw new ArrayIndexOutOfBoundsException
;
488 jcharArray array
= JvNewCharArray (count
);
489 gnu::gcj::convert::BytesToUnicode
*converter
490 = gnu::gcj::convert::BytesToUnicode::getDecoder(encoding
);
493 converter
->setInput(bytes
, offset
, offset
+count
);
494 while (converter
->inpos
< converter
->inlength
)
496 int done
= converter
->read(array
, outpos
, avail
);
499 jint new_size
= 2 * (outpos
+ avail
);
500 jcharArray new_array
= JvNewCharArray (new_size
);
501 memcpy (elements (new_array
), elements (array
),
502 outpos
* sizeof(jchar
));
504 avail
= new_size
- outpos
;
514 this->boffset
= (char *) elements (array
) - (char *) array
;
515 this->count
= outpos
;
519 java::lang::String::init (gnu::gcj::runtime::StringBuffer
*buffer
)
521 init (buffer
->value
, 0, buffer
->count
, true);
525 java::lang::String::equals(jobject anObject
)
527 if (anObject
== NULL
)
529 if (anObject
== this)
531 if (anObject
->getClass() != &java::lang::String::class$
)
533 jstring other
= (jstring
) anObject
;
534 if (count
!= other
->count
)
536 /* if both are interned, return false. */
538 jchar
*xptr
= JvGetStringChars (this);
539 jchar
*yptr
= JvGetStringChars (other
);
542 if (*xptr
++ != *yptr
++)
549 java::lang::String::contentEquals(java::lang::StringBuffer
* buffer
)
552 throw new NullPointerException
;
553 JvSynchronize
sync(buffer
);
554 if (count
!= buffer
->count
)
556 if (data
== buffer
->value
)
557 return true; // Possible if shared.
559 jchar
*xptr
= JvGetStringChars(this);
560 jchar
*yptr
= elements(buffer
->value
);
562 if (*xptr
++ != *yptr
++)
568 java::lang::String::charAt(jint i
)
570 if (i
< 0 || i
>= count
)
571 throw new java::lang::StringIndexOutOfBoundsException(i
);
572 return JvGetStringChars(this)[i
];
576 java::lang::String::getChars(jint srcBegin
, jint srcEnd
,
577 jcharArray dst
, jint dstBegin
)
579 jint dst_length
= JvGetArrayLength (dst
);
580 if (srcBegin
< 0 || srcBegin
> srcEnd
|| srcEnd
> count
)
581 throw new java::lang::StringIndexOutOfBoundsException
;
582 // The 2nd part of the test below is equivalent to
583 // dstBegin + (srcEnd-srcBegin) > dst_length
584 // except that it does not overflow.
585 if (dstBegin
< 0 || dstBegin
> dst_length
- (srcEnd
-srcBegin
))
586 throw new ArrayIndexOutOfBoundsException
;
587 jchar
*dPtr
= elements (dst
) + dstBegin
;
588 jchar
*sPtr
= JvGetStringChars (this) + srcBegin
;
589 jint i
= srcEnd
-srcBegin
;
595 java::lang::String::getBytes (jstring enc
)
597 jint todo
= length();
599 jbyteArray buffer
= JvNewByteArray(todo
);
602 gnu::gcj::convert::UnicodeToBytes
*converter
603 = gnu::gcj::convert::UnicodeToBytes::getEncoder(enc
);
604 while (todo
> 0 || converter
->havePendingBytes())
606 converter
->setOutput(buffer
, bufpos
);
607 int converted
= converter
->write(this, offset
, todo
, NULL
);
608 bufpos
= converter
->count
;
609 if (converted
== 0 && bufpos
== converter
->count
)
612 jbyteArray newbuffer
= JvNewByteArray(buflen
);
613 memcpy (elements (newbuffer
), elements (buffer
), bufpos
);
617 bufpos
= converter
->count
;
623 if (bufpos
== buflen
)
625 jbyteArray result
= JvNewByteArray(bufpos
);
626 memcpy (elements (result
), elements (buffer
), bufpos
);
631 java::lang::String::getBytes(jint srcBegin
, jint srcEnd
,
632 jbyteArray dst
, jint dstBegin
)
634 jint dst_length
= JvGetArrayLength (dst
);
635 if (srcBegin
< 0 || srcBegin
> srcEnd
|| srcEnd
> count
)
636 throw new java::lang::StringIndexOutOfBoundsException
;
637 // The 2nd part of the test below is equivalent to
638 // dstBegin + (srcEnd-srcBegin) > dst_length
639 // except that it does not overflow.
640 if (dstBegin
< 0 || dstBegin
> dst_length
- (srcEnd
-srcBegin
))
641 throw new ArrayIndexOutOfBoundsException
;
642 jbyte
*dPtr
= elements (dst
) + dstBegin
;
643 jchar
*sPtr
= JvGetStringChars (this) + srcBegin
;
644 jint i
= srcEnd
-srcBegin
;
646 *dPtr
++ = (jbyte
) *sPtr
++;
650 java::lang::String::toCharArray()
652 jcharArray array
= JvNewCharArray(count
);
653 jchar
*dPtr
= elements (array
);
654 jchar
*sPtr
= JvGetStringChars (this);
662 java::lang::String::equalsIgnoreCase (jstring anotherString
)
664 if (anotherString
== NULL
|| count
!= anotherString
->count
)
666 jchar
*tptr
= JvGetStringChars (this);
667 jchar
*optr
= JvGetStringChars (anotherString
);
674 && (java::lang::Character::toLowerCase (tch
)
675 != java::lang::Character::toLowerCase (och
))
676 && (java::lang::Character::toUpperCase (tch
)
677 != java::lang::Character::toUpperCase (och
)))
684 java::lang::String::regionMatches (jint toffset
,
685 jstring other
, jint ooffset
, jint len
)
687 if (toffset
< 0 || ooffset
< 0 || len
< 0
688 || toffset
> count
- len
689 || ooffset
> other
->count
- len
)
691 jchar
*tptr
= JvGetStringChars (this) + toffset
;
692 jchar
*optr
= JvGetStringChars (other
) + ooffset
;
696 if (*tptr
++ != *optr
++)
703 java::lang::String::compareTo (jstring anotherString
)
705 jchar
*tptr
= JvGetStringChars (this);
706 jchar
*optr
= JvGetStringChars (anotherString
);
707 jint tlen
= this->count
;
708 jint olen
= anotherString
->count
;
709 jint i
= tlen
> olen
? olen
: tlen
;
715 return (jint
) tch
- (jint
) och
;
721 java::lang::String::regionMatches (jboolean ignoreCase
, jint toffset
,
722 jstring other
, jint ooffset
, jint len
)
724 if (toffset
< 0 || ooffset
< 0 || len
< 0
725 || toffset
> count
- len
726 || ooffset
> other
->count
- len
)
728 jchar
*tptr
= JvGetStringChars (this) + toffset
;
729 jchar
*optr
= JvGetStringChars (other
) + ooffset
;
736 if ((java::lang::Character::toLowerCase (tch
)
737 != java::lang::Character::toLowerCase (och
))
738 && (java::lang::Character::toUpperCase (tch
)
739 != java::lang::Character::toUpperCase (och
)))
754 java::lang::String::startsWith (jstring prefix
, jint toffset
)
756 jint i
= prefix
->count
;
757 if (toffset
< 0 || toffset
> count
- i
)
759 jchar
*xptr
= JvGetStringChars (this) + toffset
;
760 jchar
*yptr
= JvGetStringChars (prefix
);
763 if (*xptr
++ != *yptr
++)
770 java::lang::String::indexOf (jint ch
, jint fromIndex
)
774 jchar
*ptr
= JvGetStringChars(this);
777 if (fromIndex
>= count
)
779 if (ptr
[fromIndex
] == ch
)
785 java::lang::String::indexOf (jstring s
, jint fromIndex
)
787 const jchar
*const xchars
= JvGetStringChars(s
);
788 const jchar
*const ychars
= JvGetStringChars(this) + fromIndex
;
790 const int xlength
= s
->length ();
791 const int ylength
= length () - fromIndex
;
796 while (i
< ylength
&& j
< xlength
)
798 if (xchars
[j
] != ychars
[i
])
808 return fromIndex
+ i
- xlength
;
814 java::lang::String::lastIndexOf (jint ch
, jint fromIndex
)
816 if (fromIndex
>= count
)
817 fromIndex
= count
- 1;
818 jchar
*ptr
= JvGetStringChars(this);
823 if (ptr
[fromIndex
] == ch
)
829 java::lang::String::substring (jint beginIndex
, jint endIndex
)
831 if (beginIndex
< 0 || endIndex
> count
|| beginIndex
> endIndex
)
832 throw new StringIndexOutOfBoundsException
;
833 if (beginIndex
== 0 && endIndex
== count
)
835 jint newCount
= endIndex
- beginIndex
;
836 // For very small strings, just allocate a new one. For other
837 // substrings, allocate a new one unless the substring is over half
838 // of the original string.
839 if (newCount
<= 8 || newCount
< (count
>> 1))
840 return JvNewString(JvGetStringChars(this) + beginIndex
, newCount
);
841 jstring s
= new String();
844 s
->boffset
= boffset
+ sizeof(jchar
) * beginIndex
;
849 java::lang::String::concat(jstring str
)
851 jint str_count
= str
->count
;
854 jstring result
= JvAllocString(count
+ str_count
);
855 jchar
*dstPtr
= JvGetStringChars(result
);
856 jchar
*srcPtr
= JvGetStringChars(this);
859 *dstPtr
++ = *srcPtr
++;
860 srcPtr
= JvGetStringChars(str
);
863 *dstPtr
++ = *srcPtr
++;
868 java::lang::String::replace (jchar oldChar
, jchar newChar
)
871 jchar
* chrs
= JvGetStringChars (this);
876 if (chrs
[i
] == oldChar
)
879 jstring result
= JvAllocString (count
);
880 jchar
*dPtr
= JvGetStringChars (result
);
881 for (int j
= 0; j
< i
; j
++)
883 for (; i
< count
; i
++)
894 java::lang::String::toLowerCase (java::util::Locale
*locale
)
897 jchar
* chrs
= JvGetStringChars(this);
900 bool handle_tr
= false;
903 String
*lang
= locale
->getLanguage ();
904 if (lang
->length () == 2
905 && lang
->charAt (0) == 't'
906 && lang
->charAt (1) == 'r')
914 jchar origChar
= chrs
[i
];
916 if (handle_tr
&& (origChar
== CAPITAL_I
917 || origChar
== CAPITAL_I_WITH_DOT
))
920 ch
= java::lang::Character::toLowerCase(origChar
);
924 jstring result
= JvAllocString(count
);
925 jchar
*dPtr
= JvGetStringChars (result
);
926 for (int j
= 0; j
< i
; j
++)
929 for (; i
< count
; i
++)
931 if (handle_tr
&& chrs
[i
] == CAPITAL_I
)
932 *dPtr
++ = SMALL_DOTLESS_I
;
933 else if (handle_tr
&& chrs
[i
] == CAPITAL_I_WITH_DOT
)
936 *dPtr
++ = java::lang::Character::toLowerCase(chrs
[i
]);
942 java::lang::String::toUpperCase (java::util::Locale
*locale
)
945 jchar
* chrs
= JvGetStringChars(this);
948 // When handling a specific locale there might be special rules.
949 // Currently all existing rules are simply handled inline, as there
950 // are only two and they are documented in the online 1.2 docs.
951 bool handle_esset
= locale
!= NULL
;
952 bool handle_tr
= false;
955 String
*lang
= locale
->getLanguage ();
956 if (lang
->length () == 2
957 && lang
->charAt (0) == 't'
958 && lang
->charAt (1) == 'r')
962 int new_count
= count
;
963 bool new_string
= false;
968 jchar origChar
= chrs
[i
];
970 if (handle_esset
&& origChar
== ESSET
)
975 else if (handle_tr
&& (origChar
== SMALL_I
976 || origChar
== SMALL_DOTLESS_I
))
980 ch
= java::lang::Character::toUpperCase(origChar
);
985 if (new_string
&& ! handle_esset
)
990 jstring result
= JvAllocString(new_count
);
991 jchar
*dPtr
= JvGetStringChars (result
);
992 for (i
= 0; i
< count
; i
++)
994 if (handle_esset
&& chrs
[i
] == ESSET
)
999 else if (handle_tr
&& chrs
[i
] == SMALL_I
)
1000 *dPtr
++ = CAPITAL_I_WITH_DOT
;
1001 else if (handle_tr
&& chrs
[i
] == SMALL_DOTLESS_I
)
1002 *dPtr
++ = CAPITAL_I
;
1004 *dPtr
++ = java::lang::Character::toUpperCase(chrs
[i
]);
1010 java::lang::String::trim ()
1012 jchar
* chrs
= JvGetStringChars(this);
1013 if (count
== 0 || (chrs
[0] > ' ' && chrs
[count
-1] > ' '))
1018 if (preTrim
== count
)
1019 return new String();
1020 if (chrs
[preTrim
] > ' ')
1023 jint endTrim
= count
;
1024 while (chrs
[endTrim
-1] <= ' ')
1026 return substring(preTrim
, endTrim
);
1030 java::lang::String::valueOf(jcharArray data
, jint offset
, jint count
)
1032 jint data_length
= JvGetArrayLength (data
);
1033 if (offset
< 0 || count
< 0 || offset
> data_length
- count
)
1034 throw new ArrayIndexOutOfBoundsException
;
1035 jstring result
= JvAllocString(count
);
1036 jchar
*sPtr
= elements (data
) + offset
;
1037 jchar
*dPtr
= JvGetStringChars(result
);
1038 while (--count
>= 0)
1044 java::lang::String::valueOf(jchar c
)
1046 jstring result
= JvAllocString(1);
1047 JvGetStringChars (result
)[0] = c
;