Line data    Source code

       1             : // © 2016 and later: Unicode, Inc. and others.
       2             : // License & terms of use: http://www.unicode.org/copyright.html
       3             : /********************************************************************
       4             :  * COPYRIGHT:
       5             :  * Copyright (c) 2008-2011, International Business Machines Corporation and
       6             :  * others. All Rights Reserved.
       7             :  ********************************************************************/
       8             : //
       9             : //  file:  regextxt.cpp
      10             : //
      11             : //  This file contains utility code for supporting UText in the regular expression engine.
      12             : //
      13             : 
      14             : #include "unicode/utf.h"
      15             : #include "regextxt.h"
      16             : 
      17             : U_NAMESPACE_BEGIN
      18             : 
      19             : U_CFUNC UChar U_CALLCONV
      20           0 : uregex_utext_unescape_charAt(int32_t offset, void *ct) {
      21           0 :     struct URegexUTextUnescapeCharContext *context = (struct URegexUTextUnescapeCharContext *)ct;
      22             :     UChar32 c;
      23           0 :     if (offset == context->lastOffset + 1) {
      24           0 :         c = UTEXT_NEXT32(context->text);
      25           0 :         context->lastOffset++;
      26           0 :     } else if (offset == context->lastOffset) {
      27           0 :         c = UTEXT_PREVIOUS32(context->text);
      28           0 :         UTEXT_NEXT32(context->text);
      29             :     } else {
      30           0 :         utext_moveIndex32(context->text, offset - context->lastOffset - 1);
      31           0 :         c = UTEXT_NEXT32(context->text);
      32           0 :         context->lastOffset = offset;
      33             :     }
      34             : 
      35             :     // !!!: Doesn't handle characters outside BMP
      36           0 :     if (U_IS_BMP(c)) {
      37           0 :         return (UChar)c;
      38             :     } else {
      39           0 :         return 0;
      40             :     }
      41             : }
      42             : 
      43             : U_CFUNC UChar U_CALLCONV
      44           0 : uregex_ucstr_unescape_charAt(int32_t offset, void *context) {
      45           0 :     return ((UChar *)context)[offset];
      46             : }
      47             : 
      48             : U_NAMESPACE_END