util/nvramtool/accessors/layout-common.c

   1 /*****************************************************************************\
   2  * layout_common.c
   3  *****************************************************************************
   4  *  This file is part of nvramtool, a utility for reading/writing coreboot
   5  *  parameters and displaying information from the coreboot table.
   6  *  For details, see https://coreboot.org/nvramtool.
   7  *
   8  *  Please also read the file DISCLAIMER which is included in this software
   9  *  distribution.
  10  *
  11  *  This program is free software; you can redistribute it and/or modify it
  12  *  under the terms of the GNU General Public License (as published by the
  13  *  Free Software Foundation) version 2, dated June 1991.
  14  *
  15  *  This program is distributed in the hope that it will be useful, but
  16  *  WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
  17  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the terms and
  18  *  conditions of the GNU General Public License for more details.
  19 \*****************************************************************************/
  20
  21 #include <ctype.h>
  22
  23 #include "layout-text.h"
  24
  25 static int is_ident_nondigit(int c)
  26 {
  27         int result;
  28         switch(c) {
  29         case 'A':       case 'B':       case 'C':       case 'D':
  30         case 'E':       case 'F':       case 'G':       case 'H':
  31         case 'I':       case 'J':       case 'K':       case 'L':
  32         case 'M':       case 'N':       case 'O':       case 'P':
  33         case 'Q':       case 'R':       case 'S':       case 'T':
  34         case 'U':       case 'V':       case 'W':       case 'X':
  35         case 'Y':       case 'Z':
  36         case 'a':       case 'b':       case 'c':       case 'd':
  37         case 'e':       case 'f':       case 'g':       case 'h':
  38         case 'i':       case 'j':       case 'k':       case 'l':
  39         case 'm':       case 'n':       case 'o':       case 'p':
  40         case 'q':       case 'r':       case 's':       case 't':
  41         case 'u':       case 'v':       case 'w':       case 'x':
  42         case 'y':       case 'z':
  43         case '_':
  44                 result = 1;
  45                 break;
  46         default:
  47                 result = 0;
  48                 break;
  49         }
  50         return result;
  51 }
  52
  53 int is_ident(char *str)
  54 {
  55         int result;
  56         int ch;
  57         ch = *str;
  58         result = 0;
  59         if (is_ident_nondigit(ch)) {
  60                 do {
  61                         str++;
  62                         ch = *str;
  63                 } while(ch && (is_ident_nondigit(ch) || (isdigit(ch))));
  64                 result = (ch == '\0');
  65         }
  66         return result;
  67 }