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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148/****mbstok_s.c - Break string into tokens (MBCS)** Copyright (c) Microsoft Corporation. All rights reserved.**Purpose:* Break string into tokens (MBCS)********************************************************************************/#ifndef _MBCS #error This file should only be compiled with _MBCS defined#endif
#include <corecrt_internal_mbstring.h>#include <corecrt_internal_securecrt.h>
unsigned char * __cdecl _mbstok_s_l(unsigned char *_String, const unsigned char *_Control, unsigned char **_Context, _LOCALE_ARG_DECL){ unsigned char *token; const unsigned char *ctl; int dbc;
/* validation section */ _VALIDATE_POINTER_ERROR_RETURN(_Context, EINVAL, nullptr); _VALIDATE_POINTER_ERROR_RETURN(_Control, EINVAL, nullptr); _VALIDATE_CONDITION_ERROR_RETURN(_String != nullptr || *_Context != nullptr, EINVAL, nullptr);
_LOCALE_UPDATE; if (_LOCALE_SHORTCUT_TEST) { return (unsigned char*)strtok_s((char *)_String, (const char *)_Control, (char **)_Context); }
/* If string==nullptr, continue with previous string */ if (!_String) { _String = *_Context; }
/* Find beginning of token (skip over leading delimiters). Note that * there is no token iff this loop sets string to point to the terminal null. */ for ( ; *_String != 0; _String++) { for (ctl = _Control; *ctl != 0; ctl++) { if (_ISMBBLEAD(*ctl)) { if (ctl[1] == 0) { ctl++; _SET_MBCS_ERROR; break; } if (*ctl == *_String && ctl[1] == _String[1]) { break; } ctl++; } else { if (*ctl == *_String) { break; } } } if (*ctl == 0) { break; } if (_ISMBBLEAD(*_String)) { _String++; if (*_String == 0) { _SET_MBCS_ERROR; break; } } }
token = _String;
/* Find the end of the token. If it is not the end of the string, * put a null there. */ for ( ; *_String != 0; _String++) { for (ctl = _Control, dbc = 0; *ctl != 0; ctl++) { if (_ISMBBLEAD(*ctl)) { if (ctl[1] == 0) { ctl++; break; } if (ctl[0] == _String[0] && ctl[1] == _String[1]) { dbc = 1; break; } ctl++; } else { if (*ctl == *_String) { break; } } } if (*ctl != 0) { *_String++ = 0; if (dbc) { *_String++ = 0; } break; } if (_ISMBBLEAD(_String[0])) { if (_String[1] == 0) { *_String = 0; break; } _String++; } }
/* Update the context */ *_Context = _String;
/* Determine if a token has been found. */ if (token == _String) { return nullptr; } else { return token; }}
_REDIRECT_TO_L_VERSION_3(unsigned char *, _mbstok_s, unsigned char *, const unsigned char *, unsigned char **)