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    1: /***************************************************************************
    2:  *                                  _   _ ____  _
    3:  *  Project                     ___| | | |  _ \| |
    4:  *                             / __| | | | |_) | |
    5:  *                            | (__| |_| |  _ <| |___
    6:  *                             \___|\___/|_| \_\_____|
    7:  *
    8:  * Copyright (C) 1998 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
    9:  *
   10:  * This software is licensed as described in the file COPYING, which
   11:  * you should have received as part of this distribution. The terms
   12:  * are also available at https://curl.haxx.se/docs/copyright.html.
   13:  *
   14:  * You may opt to use, copy, modify, merge, publish, distribute and/or sell
   15:  * copies of the Software, and permit persons to whom the Software is
   16:  * furnished to do so, under the terms of the COPYING file.
   17:  *
   18:  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
   19:  * KIND, either express or implied.
   20:  *
   21:  ***************************************************************************/
   22: 
   23: #include "curl_setup.h"
   24: 
   25: #ifndef CURL_DOES_CONVERSIONS
   26: 
   27: #undef _U
   28: #define _U (1<<0) /* upper case */
   29: #undef _L
   30: #define _L (1<<1) /* lower case */
   31: #undef _N
   32: #define _N (1<<2) /* decimal numerical digit */
   33: #undef _S
   34: #define _S (1<<3) /* space */
   35: #undef _P
   36: #define _P (1<<4) /* punctuation */
   37: #undef _C
   38: #define _C (1<<5) /* control */
   39: #undef _X
   40: #define _X (1<<6) /* hexadecimal letter */
   41: #undef _B
   42: #define _B (1<<7) /* blank */
   43: 
   44: static const unsigned char ascii[128] = {
   45:   _C,   _C,     _C,     _C,     _C,     _C,     _C,     _C,
   46:   _C,   _C|_S,  _C|_S,  _C|_S,  _C|_S,  _C|_S,  _C,     _C,
   47:   _C,   _C,     _C,     _C,     _C,     _C,     _C,     _C,
   48:   _C,   _C,     _C,     _C,     _C,     _C,     _C,     _C,
   49:   _S|_B, _P,    _P,     _P,     _P,     _P,     _P,     _P,
   50:   _P,   _P,     _P,     _P,     _P,     _P,     _P,     _P,
   51:   _N,   _N,     _N,     _N,     _N,     _N,     _N,     _N,
   52:   _N,   _N,     _P,     _P,     _P,     _P,     _P,     _P,
   53:   _P,   _U|_X,  _U|_X,  _U|_X,  _U|_X,  _U|_X,  _U|_X,  _U,
   54:   _U,   _U,     _U,     _U,     _U,     _U,     _U,     _U,
   55:   _U,   _U,     _U,     _U,     _U,     _U,     _U,     _U,
   56:   _U,   _U,     _U,     _P,     _P,     _P,     _P,     _P,
   57:   _P,   _L|_X,  _L|_X,  _L|_X,  _L|_X,  _L|_X,  _L|_X,  _L,
   58:   _L,   _L,     _L,     _L,     _L,     _L,     _L,     _L,
   59:   _L,   _L,     _L,     _L,     _L,     _L,     _L,     _L,
   60:   _L,   _L,     _L,     _P,     _P,     _P,     _P,     _C
   61: };
   62: 
   63: int Curl_isspace(int c)
   64: {
   65:   if((c < 0) || (c >= 0x80))
   66:     return FALSE;
   67:   return (ascii[c] & _S);
   68: }
   69: 
   70: int Curl_isdigit(int c)
   71: {
   72:   if((c < 0) || (c >= 0x80))
   73:     return FALSE;
   74:   return (ascii[c] & _N);
   75: }
   76: 
   77: int Curl_isalnum(int c)
   78: {
   79:   if((c < 0) || (c >= 0x80))
   80:     return FALSE;
   81:   return (ascii[c] & (_N|_U|_L));
   82: }
   83: 
   84: int Curl_isxdigit(int c)
   85: {
   86:   if((c < 0) || (c >= 0x80))
   87:     return FALSE;
   88:   return (ascii[c] & (_N|_X));
   89: }
   90: 
   91: int Curl_isgraph(int c)
   92: {
   93:   if((c < 0) || (c >= 0x80) || (c == ' '))
   94:     return FALSE;
   95:   return (ascii[c] & (_N|_X|_U|_L|_P|_S));
   96: }
   97: 
   98: int Curl_isprint(int c)
   99: {
  100:   if((c < 0) || (c >= 0x80))
  101:     return FALSE;
  102:   return (ascii[c] & (_N|_X|_U|_L|_P|_S));
  103: }
  104: 
  105: int Curl_isalpha(int c)
  106: {
  107:   if((c < 0) || (c >= 0x80))
  108:     return FALSE;
  109:   return (ascii[c] & (_U|_L));
  110: }
  111: 
  112: int Curl_isupper(int c)
  113: {
  114:   if((c < 0) || (c >= 0x80))
  115:     return FALSE;
  116:   return (ascii[c] & (_U));
  117: }
  118: 
  119: int Curl_islower(int c)
  120: {
  121:   if((c < 0) || (c >= 0x80))
  122:     return FALSE;
  123:   return (ascii[c] & (_L));
  124: }
  125: 
  126: int Curl_iscntrl(int c)
  127: {
  128:   if((c < 0) || (c >= 0x80))
  129:     return FALSE;
  130:   return (ascii[c] & (_C));
  131: }
  132: 
  133: #endif /* !CURL_DOES_CONVERSIONS */