1// Licensed to the .NET Foundation under one or more agreements.
2// The .NET Foundation licenses this file to you under the MIT license.
3// See the LICENSE file in the project root for more information.
4//
5
6#include <stdint.h>
7#include "icushim.h"
8
9const uint32_t AllowUnassigned = 0x1;
10const uint32_t UseStd3AsciiRules = 0x2;
11
12uint32_t GetOptions(uint32_t flags)
13{
14 // Using Nontransitional to Unicode and Check ContextJ to match the current behavior of .NET on Windows
15 uint32_t options = UIDNA_NONTRANSITIONAL_TO_UNICODE | UIDNA_CHECK_CONTEXTJ;
16
17 if ((flags & AllowUnassigned) == AllowUnassigned)
18 {
19 options |= UIDNA_ALLOW_UNASSIGNED;
20 }
21
22 if ((flags & UseStd3AsciiRules) == UseStd3AsciiRules)
23 {
24 options |= UIDNA_USE_STD3_RULES;
25 }
26
27 return options;
28}
29
30/*
31Function:
32ToASCII
33
34Used by System.Globalization.IdnMapping.GetAsciiCore to convert an Unicode
35domain name to ASCII
36
37Return values:
380: internal error during conversion.
39>0: the length of the converted string (not including the null terminator).
40*/
41extern "C" int32_t GlobalizationNative_ToAscii(
42 uint32_t flags, const UChar* lpSrc, int32_t cwSrcLength, UChar* lpDst, int32_t cwDstLength)
43{
44 UErrorCode err = U_ZERO_ERROR;
45 UIDNAInfo info = UIDNA_INFO_INITIALIZER;
46
47 UIDNA* pIdna = uidna_openUTS46(GetOptions(flags), &err);
48
49 int32_t asciiStrLen = uidna_nameToASCII(pIdna, lpSrc, cwSrcLength, lpDst, cwDstLength, &info, &err);
50
51 uidna_close(pIdna);
52
53 return ((U_SUCCESS(err) || (err == U_BUFFER_OVERFLOW_ERROR)) && (info.errors == 0)) ? asciiStrLen : 0;
54}
55
56/*
57Function:
58ToUnicode
59
60Used by System.Globalization.IdnMapping.GetUnicodeCore to convert an ASCII name
61to Unicode
62
63Return values:
640: internal error during conversion.
65>0: the length of the converted string (not including the null terminator).
66*/
67extern "C" int32_t GlobalizationNative_ToUnicode(
68 int32_t flags, const UChar* lpSrc, int32_t cwSrcLength, UChar* lpDst, int32_t cwDstLength)
69{
70 UErrorCode err = U_ZERO_ERROR;
71 UIDNAInfo info = UIDNA_INFO_INITIALIZER;
72
73 UIDNA* pIdna = uidna_openUTS46(GetOptions(flags), &err);
74
75 int32_t unicodeStrLen = uidna_nameToUnicode(pIdna, lpSrc, cwSrcLength, lpDst, cwDstLength, &info, &err);
76
77 uidna_close(pIdna);
78
79 return ((U_SUCCESS(err) || (err == U_BUFFER_OVERFLOW_ERROR)) && (info.errors == 0)) ? unicodeStrLen : 0;
80}
81