ucs2.h

   1 /*
   2  * shim - trivial UEFI first-stage bootloader
   3  *
   4  * Copyright 2013 Red Hat, Inc <pjones@redhat.com>
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * Redistributions of source code must retain the above copyright
  11  * notice, this list of conditions and the following disclaimer.
  12  *
  13  * Redistributions in binary form must reproduce the above copyright
  14  * notice, this list of conditions and the following disclaimer in the
  15  * documentation and/or other materials provided with the
  16  * distribution.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  21  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  22  * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
  23  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  24  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  25  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  27  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  29  * OF THE POSSIBILITY OF SUCH DAMAGE.
  30  *
  31  * Significant portions of this code are derived from Tianocore
  32  * (http://tianocore.sf.net) and are Copyright 2009-2012 Intel
  33  * Corporation.
  34  */
  35
  36 #ifndef SHIM_UCS2_H
  37 #define SHIM_UCS2_H
  38
  39 static inline INTN
  40 __attribute__((unused))
  41 StrCaseCmp(CHAR16 *s0, CHAR16 *s1)
  42 {
  43         CHAR16 c0, c1;
  44         while (1) {
  45                 if (*s0 == L'\0' || *s1 == L'\0')
  46                         return *s1 - *s0;
  47                 c0 = (*s0 >= L'a' && *s0 <= L'z') ? *s0 - 32 : *s0;
  48                 c1 = (*s1 >= L'a' && *s1 <= L'z') ? *s1 - 32 : *s1;
  49                 if (c0 != c1)
  50                         return c1 - c0;
  51                 s0++;
  52                 s1++;
  53         }
  54         return 0;
  55 }
  56
  57 static inline INTN
  58 __attribute__((unused))
  59 StrnCaseCmp(CHAR16 *s0, CHAR16 *s1, int n)
  60 {
  61         CHAR16 c0, c1;
  62         int x = 0;
  63         while (n > x++) {
  64                 if (*s0 == L'\0' || *s1 == L'\0')
  65                         return *s1 - *s0;
  66                 c0 = (*s0 >= L'a' && *s0 <= L'z') ? *s0 - 32 : *s0;
  67                 c1 = (*s1 >= L'a' && *s1 <= L'z') ? *s1 - 32 : *s1;
  68                 if (c0 != c1)
  69                         return c1 - c0;
  70                 s0++;
  71                 s1++;
  72         }
  73         return 0;
  74 }
  75
  76 static inline UINTN
  77 __attribute__((unused))
  78 StrCSpn(const CHAR16 *s, const CHAR16 *reject)
  79 {
  80         UINTN ret;
  81
  82         for (ret = 0; s[ret] != L'\0'; ret++) {
  83                 int i;
  84                 for (i = 0; reject[i] != L'\0'; i++) {
  85                         if (reject[i] == s[ret])
  86                                 return ret;
  87                 }
  88         }
  89         return ret;
  90 }
  91
  92 #endif /* SHIM_UCS2_H */