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Date
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alphaindex.h
26.52
KB
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2026-06-02 15:59
appendable.h
8.53
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2026-06-02 15:59
basictz.h
9.86
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2026-06-02 15:59
brkiter.h
27.81
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2026-06-02 15:59
bytestream.h
10.75
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2026-06-02 15:59
bytestrie.h
20.77
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2026-06-02 15:59
bytestriebuilder.h
7.46
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2026-06-02 15:59
calendar.h
105.88
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2026-06-02 15:59
caniter.h
7.44
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2026-06-02 15:59
casemap.h
25.33
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2026-06-02 15:59
char16ptr.h
7.22
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2026-06-02 15:59
chariter.h
24.06
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2026-06-02 15:59
choicfmt.h
23.97
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2026-06-02 15:59
coleitr.h
13.77
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2026-06-02 15:59
coll.h
56.26
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2026-06-02 15:59
compactdecimalformat.h
6.88
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2026-06-02 15:59
curramt.h
3.78
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2026-06-02 15:59
currpinf.h
7.3
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2026-06-02 15:59
currunit.h
4.02
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2026-06-02 15:59
datefmt.h
40.71
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2026-06-02 15:59
dbbi.h
1.19
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2026-06-02 15:59
dcfmtsym.h
20.61
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2026-06-02 15:59
decimfmt.h
87.57
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2026-06-02 15:59
docmain.h
7.21
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2026-06-02 15:59
dtfmtsym.h
38.21
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2026-06-02 15:59
dtintrv.h
3.84
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2026-06-02 15:59
dtitvfmt.h
49.27
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2026-06-02 15:59
dtitvinf.h
18.63
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2026-06-02 15:59
dtptngen.h
28.84
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2026-06-02 15:59
dtrule.h
8.69
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2026-06-02 15:59
edits.h
20.74
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2026-06-02 15:59
enumset.h
2.08
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2026-06-02 15:59
errorcode.h
4.84
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2026-06-02 15:59
fieldpos.h
8.7
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2026-06-02 15:59
filteredbrk.h
5.37
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2026-06-02 15:59
fmtable.h
24.43
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2026-06-02 15:59
format.h
12.5
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2026-06-02 15:59
formattedvalue.h
9.75
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2026-06-02 15:59
fpositer.h
3.03
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2026-06-02 15:59
gender.h
3.33
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2026-06-02 15:59
gregocal.h
31.88
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2026-06-02 15:59
icudataver.h
1.02
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2026-06-02 15:59
icuplug.h
11.83
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2026-06-02 15:59
idna.h
12.7
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2026-06-02 15:59
listformatter.h
8.79
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2026-06-02 15:59
localebuilder.h
11.08
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2026-06-02 15:59
localematcher.h
26.84
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2026-06-02 15:59
localpointer.h
19.36
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2026-06-02 15:59
locdspnm.h
7.12
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2026-06-02 15:59
locid.h
47.66
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2026-06-02 15:59
measfmt.h
11.42
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2026-06-02 15:59
measunit.h
104.97
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2026-06-02 15:59
measure.h
4.33
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2026-06-02 15:59
messagepattern.h
33.71
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2026-06-02 15:59
msgfmt.h
44.22
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2026-06-02 15:59
normalizer2.h
33.66
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2026-06-02 15:59
normlzr.h
30.95
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2026-06-02 15:59
nounit.h
2.25
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2026-06-02 15:59
numberformatter.h
94.15
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2026-06-02 15:59
numberrangeformatter.h
25.19
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2026-06-02 15:59
numfmt.h
49.84
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2026-06-02 15:59
numsys.h
7.33
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2026-06-02 15:59
parseerr.h
3.08
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2026-06-02 15:59
parsepos.h
5.57
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2026-06-02 15:59
platform.h
28.09
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2026-06-02 15:59
plurfmt.h
25.24
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2026-06-02 15:59
plurrule.h
20.82
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2026-06-02 15:59
ptypes.h
3.49
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2026-06-02 15:59
putil.h
6.32
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2026-06-02 15:59
rbbi.h
28.64
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2026-06-02 15:59
rbnf.h
48.85
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2026-06-02 15:59
rbtz.h
15.77
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2026-06-02 15:59
regex.h
84.36
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2026-06-02 15:59
region.h
9.18
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2026-06-02 15:59
reldatefmt.h
22.22
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2026-06-02 15:59
rep.h
9.37
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2026-06-02 15:59
resbund.h
18.08
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2026-06-02 15:59
schriter.h
6.36
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2026-06-02 15:59
scientificnumberformatter.h
6.43
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2026-06-02 15:59
search.h
22.22
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2026-06-02 15:59
selfmt.h
14.34
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2026-06-02 15:59
simpleformatter.h
12.59
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2026-06-02 15:59
simpletz.h
45.64
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2026-06-02 15:59
smpdtfmt.h
71.07
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2026-06-02 15:59
sortkey.h
11.18
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2026-06-02 15:59
std_string.h
1.05
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2026-06-02 15:59
strenum.h
9.92
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2026-06-02 15:59
stringoptions.h
5.79
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2026-06-02 15:59
stringpiece.h
10.05
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2026-06-02 15:59
stringtriebuilder.h
15.47
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2026-06-02 15:59
stsearch.h
21.41
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2026-06-02 15:59
symtable.h
4.27
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2026-06-02 15:59
tblcoll.h
36.92
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2026-06-02 15:59
timezone.h
43.81
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2026-06-02 15:59
tmunit.h
3.4
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2026-06-02 15:59
tmutamt.h
4.91
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2026-06-02 15:59
tmutfmt.h
7.42
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2026-06-02 15:59
translit.h
65.82
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2026-06-02 15:59
tzfmt.h
42.93
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2026-06-02 15:59
tznames.h
16.85
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2026-06-02 15:59
tzrule.h
35.6
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2026-06-02 15:59
tztrans.h
6.13
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2026-06-02 15:59
ubidi.h
89.61
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2026-06-02 15:59
ubiditransform.h
12.7
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2026-06-02 15:59
ubrk.h
24.43
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2026-06-02 15:59
ucal.h
60.68
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2026-06-02 15:59
ucasemap.h
15.21
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2026-06-02 15:59
ucat.h
5.35
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2026-06-02 15:59
uchar.h
144.64
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2026-06-02 15:59
ucharstrie.h
22.53
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2026-06-02 15:59
ucharstriebuilder.h
7.47
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2026-06-02 15:59
uchriter.h
13.42
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2026-06-02 15:59
uclean.h
11.2
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2026-06-02 15:59
ucnv.h
83.46
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ucnv_cb.h
6.58
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2026-06-02 15:59
ucnv_err.h
20.98
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2026-06-02 15:59
ucnvsel.h
6.19
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2026-06-02 15:59
ucol.h
61.95
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2026-06-02 15:59
ucoleitr.h
9.82
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2026-06-02 15:59
uconfig.h
12.07
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2026-06-02 15:59
ucpmap.h
5.53
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2026-06-02 15:59
ucptrie.h
22.5
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2026-06-02 15:59
ucsdet.h
14.69
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2026-06-02 15:59
ucurr.h
16.72
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2026-06-02 15:59
udat.h
62.4
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2026-06-02 15:59
udata.h
15.63
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2026-06-02 15:59
udateintervalformat.h
11.93
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2026-06-02 15:59
udatpg.h
30.18
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2026-06-02 15:59
udisplaycontext.h
5.94
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2026-06-02 15:59
uenum.h
7.79
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2026-06-02 15:59
ufieldpositer.h
4.41
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2026-06-02 15:59
uformattable.h
10.97
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2026-06-02 15:59
uformattedvalue.h
12.3
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2026-06-02 15:59
ugender.h
2.06
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2026-06-02 15:59
uidna.h
33.43
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2026-06-02 15:59
uiter.h
22.75
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2026-06-02 15:59
uldnames.h
10.48
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2026-06-02 15:59
ulistformatter.h
10.78
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2026-06-02 15:59
uloc.h
54.63
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ulocdata.h
11.3
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umachine.h
16.05
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umisc.h
1.33
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umsg.h
24.25
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umutablecptrie.h
8.29
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unifilt.h
4
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unifunct.h
4.05
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unimatch.h
6.1
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unirepl.h
3.38
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uniset.h
66.46
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unistr.h
170.53
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unorm.h
20.55
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unorm2.h
24.68
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unounclass.h
735
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unum.h
55.31
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unumberformatter.h
30.28
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unumberrangeformatter.h
15.37
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2026-06-02 15:59
unumsys.h
7.26
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uobject.h
10.68
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upluralrules.h
8.79
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uregex.h
71.99
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uregion.h
9.81
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ureldatefmt.h
17.04
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urename.h
135
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urep.h
5.38
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ures.h
36.54
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uscript.h
27.63
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usearch.h
39.21
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uset.h
44.29
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usetiter.h
9.68
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ushape.h
18
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uspoof.h
65.84
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usprep.h
8.19
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ustdio.h
38.56
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ustream.h
1.89
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ustring.h
72.36
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ustringtrie.h
3.15
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utext.h
58.08
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utf.h
7.87
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utf16.h
23.35
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utf32.h
763
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utf8.h
30.83
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utf_old.h
45.83
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utmscale.h
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utrace.h
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utrans.h
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utypes.h
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uvernum.h
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uversion.h
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vtzone.h
20.74
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2026-06-02 15:59
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// © 2016 and later: Unicode, Inc. and others. // License & terms of use: http://www.unicode.org/copyright.html /* ******************************************************************************* * Copyright (C) 2010-2012, International Business Machines * Corporation and others. All Rights Reserved. ******************************************************************************* * file name: idna.h * encoding: UTF-8 * tab size: 8 (not used) * indentation:4 * * created on: 2010mar05 * created by: Markus W. Scherer */ #ifndef __IDNA_H__ #define __IDNA_H__ /** * \file * \brief C++ API: Internationalizing Domain Names in Applications (IDNA) */ #include "unicode/utypes.h" #if U_SHOW_CPLUSPLUS_API #if !UCONFIG_NO_IDNA #include "unicode/bytestream.h" #include "unicode/stringpiece.h" #include "unicode/uidna.h" #include "unicode/unistr.h" U_NAMESPACE_BEGIN class IDNAInfo; /** * Abstract base class for IDNA processing. * See http://www.unicode.org/reports/tr46/ * and http://www.ietf.org/rfc/rfc3490.txt * * The IDNA class is not intended for public subclassing. * * This C++ API currently only implements UTS #46. * The uidna.h C API implements both UTS #46 (functions using UIDNA service object) * and IDNA2003 (functions that do not use a service object). * @stable ICU 4.6 */ class U_COMMON_API IDNA : public UObject { public: /** * Destructor. * @stable ICU 4.6 */ ~IDNA(); /** * Returns an IDNA instance which implements UTS #46. * Returns an unmodifiable instance, owned by the caller. * Cache it for multiple operations, and delete it when done. * The instance is thread-safe, that is, it can be used concurrently. * * UTS #46 defines Unicode IDNA Compatibility Processing, * updated to the latest version of Unicode and compatible with both * IDNA2003 and IDNA2008. * * The worker functions use transitional processing, including deviation mappings, * unless UIDNA_NONTRANSITIONAL_TO_ASCII or UIDNA_NONTRANSITIONAL_TO_UNICODE * is used in which case the deviation characters are passed through without change. * * Disallowed characters are mapped to U+FFFD. * * For available options see the uidna.h header. * Operations with the UTS #46 instance do not support the * UIDNA_ALLOW_UNASSIGNED option. * * By default, the UTS #46 implementation allows all ASCII characters (as valid or mapped). * When the UIDNA_USE_STD3_RULES option is used, ASCII characters other than * letters, digits, hyphen (LDH) and dot/full stop are disallowed and mapped to U+FFFD. * * @param options Bit set to modify the processing and error checking. * See option bit set values in uidna.h. * @param errorCode Standard ICU error code. Its input value must * pass the U_SUCCESS() test, or else the function returns * immediately. Check for U_FAILURE() on output or use with * function chaining. (See User Guide for details.) * @return the UTS #46 IDNA instance, if successful * @stable ICU 4.6 */ static IDNA * createUTS46Instance(uint32_t options, UErrorCode &errorCode); /** * Converts a single domain name label into its ASCII form for DNS lookup. * If any processing step fails, then info.hasErrors() will be true and * the result might not be an ASCII string. * The label might be modified according to the types of errors. * Labels with severe errors will be left in (or turned into) their Unicode form. * * The UErrorCode indicates an error only in exceptional cases, * such as a U_MEMORY_ALLOCATION_ERROR. * * @param label Input domain name label * @param dest Destination string object * @param info Output container of IDNA processing details. * @param errorCode Standard ICU error code. Its input value must * pass the U_SUCCESS() test, or else the function returns * immediately. Check for U_FAILURE() on output or use with * function chaining. (See User Guide for details.) * @return dest * @stable ICU 4.6 */ virtual UnicodeString & labelToASCII(const UnicodeString &label, UnicodeString &dest, IDNAInfo &info, UErrorCode &errorCode) const = 0; /** * Converts a single domain name label into its Unicode form for human-readable display. * If any processing step fails, then info.hasErrors() will be true. * The label might be modified according to the types of errors. * * The UErrorCode indicates an error only in exceptional cases, * such as a U_MEMORY_ALLOCATION_ERROR. * * @param label Input domain name label * @param dest Destination string object * @param info Output container of IDNA processing details. * @param errorCode Standard ICU error code. Its input value must * pass the U_SUCCESS() test, or else the function returns * immediately. Check for U_FAILURE() on output or use with * function chaining. (See User Guide for details.) * @return dest * @stable ICU 4.6 */ virtual UnicodeString & labelToUnicode(const UnicodeString &label, UnicodeString &dest, IDNAInfo &info, UErrorCode &errorCode) const = 0; /** * Converts a whole domain name into its ASCII form for DNS lookup. * If any processing step fails, then info.hasErrors() will be true and * the result might not be an ASCII string. * The domain name might be modified according to the types of errors. * Labels with severe errors will be left in (or turned into) their Unicode form. * * The UErrorCode indicates an error only in exceptional cases, * such as a U_MEMORY_ALLOCATION_ERROR. * * @param name Input domain name * @param dest Destination string object * @param info Output container of IDNA processing details. * @param errorCode Standard ICU error code. Its input value must * pass the U_SUCCESS() test, or else the function returns * immediately. Check for U_FAILURE() on output or use with * function chaining. (See User Guide for details.) * @return dest * @stable ICU 4.6 */ virtual UnicodeString & nameToASCII(const UnicodeString &name, UnicodeString &dest, IDNAInfo &info, UErrorCode &errorCode) const = 0; /** * Converts a whole domain name into its Unicode form for human-readable display. * If any processing step fails, then info.hasErrors() will be true. * The domain name might be modified according to the types of errors. * * The UErrorCode indicates an error only in exceptional cases, * such as a U_MEMORY_ALLOCATION_ERROR. * * @param name Input domain name * @param dest Destination string object * @param info Output container of IDNA processing details. * @param errorCode Standard ICU error code. Its input value must * pass the U_SUCCESS() test, or else the function returns * immediately. Check for U_FAILURE() on output or use with * function chaining. (See User Guide for details.) * @return dest * @stable ICU 4.6 */ virtual UnicodeString & nameToUnicode(const UnicodeString &name, UnicodeString &dest, IDNAInfo &info, UErrorCode &errorCode) const = 0; // UTF-8 versions of the processing methods ---------------------------- *** /** * Converts a single domain name label into its ASCII form for DNS lookup. * UTF-8 version of labelToASCII(), same behavior. * * @param label Input domain name label * @param dest Destination byte sink; Flush()ed if successful * @param info Output container of IDNA processing details. * @param errorCode Standard ICU error code. Its input value must * pass the U_SUCCESS() test, or else the function returns * immediately. Check for U_FAILURE() on output or use with * function chaining. (See User Guide for details.) * @return dest * @stable ICU 4.6 */ virtual void labelToASCII_UTF8(StringPiece label, ByteSink &dest, IDNAInfo &info, UErrorCode &errorCode) const; /** * Converts a single domain name label into its Unicode form for human-readable display. * UTF-8 version of labelToUnicode(), same behavior. * * @param label Input domain name label * @param dest Destination byte sink; Flush()ed if successful * @param info Output container of IDNA processing details. * @param errorCode Standard ICU error code. Its input value must * pass the U_SUCCESS() test, or else the function returns * immediately. Check for U_FAILURE() on output or use with * function chaining. (See User Guide for details.) * @return dest * @stable ICU 4.6 */ virtual void labelToUnicodeUTF8(StringPiece label, ByteSink &dest, IDNAInfo &info, UErrorCode &errorCode) const; /** * Converts a whole domain name into its ASCII form for DNS lookup. * UTF-8 version of nameToASCII(), same behavior. * * @param name Input domain name * @param dest Destination byte sink; Flush()ed if successful * @param info Output container of IDNA processing details. * @param errorCode Standard ICU error code. Its input value must * pass the U_SUCCESS() test, or else the function returns * immediately. Check for U_FAILURE() on output or use with * function chaining. (See User Guide for details.) * @return dest * @stable ICU 4.6 */ virtual void nameToASCII_UTF8(StringPiece name, ByteSink &dest, IDNAInfo &info, UErrorCode &errorCode) const; /** * Converts a whole domain name into its Unicode form for human-readable display. * UTF-8 version of nameToUnicode(), same behavior. * * @param name Input domain name * @param dest Destination byte sink; Flush()ed if successful * @param info Output container of IDNA processing details. * @param errorCode Standard ICU error code. Its input value must * pass the U_SUCCESS() test, or else the function returns * immediately. Check for U_FAILURE() on output or use with * function chaining. (See User Guide for details.) * @return dest * @stable ICU 4.6 */ virtual void nameToUnicodeUTF8(StringPiece name, ByteSink &dest, IDNAInfo &info, UErrorCode &errorCode) const; }; class UTS46; /** * Output container for IDNA processing errors. * The IDNAInfo class is not suitable for subclassing. * @stable ICU 4.6 */ class U_COMMON_API IDNAInfo : public UMemory { public: /** * Constructor for stack allocation. * @stable ICU 4.6 */ IDNAInfo() : errors(0), labelErrors(0), isTransDiff(false), isBiDi(false), isOkBiDi(true) {} /** * Were there IDNA processing errors? * @return true if there were processing errors * @stable ICU 4.6 */ UBool hasErrors() const { return errors!=0; } /** * Returns a bit set indicating IDNA processing errors. * See UIDNA_ERROR_... constants in uidna.h. * @return bit set of processing errors * @stable ICU 4.6 */ uint32_t getErrors() const { return errors; } /** * Returns true if transitional and nontransitional processing produce different results. * This is the case when the input label or domain name contains * one or more deviation characters outside a Punycode label (see UTS #46). * <ul> * <li>With nontransitional processing, such characters are * copied to the destination string. * <li>With transitional processing, such characters are * mapped (sharp s/sigma) or removed (joiner/nonjoiner). * </ul> * @return true if transitional and nontransitional processing produce different results * @stable ICU 4.6 */ UBool isTransitionalDifferent() const { return isTransDiff; } private: friend class UTS46; IDNAInfo(const IDNAInfo &other); // no copying IDNAInfo &operator=(const IDNAInfo &other); // no copying void reset() { errors=labelErrors=0; isTransDiff=false; isBiDi=false; isOkBiDi=true; } uint32_t errors, labelErrors; UBool isTransDiff; UBool isBiDi; UBool isOkBiDi; }; U_NAMESPACE_END #endif // UCONFIG_NO_IDNA #endif /* U_SHOW_CPLUSPLUS_API */ #endif // __IDNA_H__