1 // Copyright (C) 2016 and later: Unicode, Inc. and others.
2 // License & terms of use: http://www.unicode.org/copyright.html
3 /********************************************************************
5 * Copyright (c) 2008-2011, International Business Machines Corporation and
6 * others. All Rights Reserved.
7 ********************************************************************/
11 // This file contains utility code for supporting UText in the regular expression engine.
14 #include "unicode/utf.h"
19 U_CFUNC UChar U_CALLCONV
20 uregex_utext_unescape_charAt(int32_t offset, void *ct) {
21 struct URegexUTextUnescapeCharContext *context = (struct URegexUTextUnescapeCharContext *)ct;
23 if (offset == context->lastOffset + 1) {
24 c = UTEXT_NEXT32(context->text);
25 context->lastOffset++;
26 } else if (offset == context->lastOffset) {
27 c = UTEXT_PREVIOUS32(context->text);
28 UTEXT_NEXT32(context->text);
30 utext_moveIndex32(context->text, offset - context->lastOffset - 1);
31 c = UTEXT_NEXT32(context->text);
32 context->lastOffset = offset;
35 // !!!: Doesn't handle characters outside BMP
43 U_CFUNC UChar U_CALLCONV
44 uregex_ucstr_unescape_charAt(int32_t offset, void *context) {
45 return ((UChar *)context)[offset];