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aedb8470bd
The license statements in our source files were getting to be a giant mess, and mostly they all just say the same thing. I've switched most of it to SPDX labels, but left copyright statements in place (where they were not obviously incorrect copy-paste jobs that I did...). If there's some change here you don't think is valid, let me know and we can fix it up together. Signed-off-by: Peter Jones <pjones@redhat.com>
112 lines
2.0 KiB
C
112 lines
2.0 KiB
C
// SPDX-License-Identifier: BSD-2-Clause-Patent
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/*
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* ucs2.h - UCS-2 string functions
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* Copyright Red Hat, Inc
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* Copyright Peter Jones <pjones@redhat.com>
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*/
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#ifndef SHIM_UCS2_H
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#define SHIM_UCS2_H
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#include <stdbool.h>
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static inline INTN
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__attribute__((unused))
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StrCaseCmp(CHAR16 *s0, CHAR16 *s1)
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{
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CHAR16 c0, c1;
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while (1) {
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if (*s0 == L'\0' || *s1 == L'\0')
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return *s1 - *s0;
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c0 = (*s0 >= L'a' && *s0 <= L'z') ? *s0 - 32 : *s0;
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c1 = (*s1 >= L'a' && *s1 <= L'z') ? *s1 - 32 : *s1;
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if (c0 != c1)
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return c1 - c0;
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s0++;
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s1++;
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}
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return 0;
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}
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static inline INTN
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__attribute__((unused))
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StrnCaseCmp(CHAR16 *s0, CHAR16 *s1, int n)
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{
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CHAR16 c0, c1;
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int x = 0;
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while (n > x++) {
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if (*s0 == L'\0' || *s1 == L'\0')
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return *s1 - *s0;
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c0 = (*s0 >= L'a' && *s0 <= L'z') ? *s0 - 32 : *s0;
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c1 = (*s1 >= L'a' && *s1 <= L'z') ? *s1 - 32 : *s1;
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if (c0 != c1)
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return c1 - c0;
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s0++;
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s1++;
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}
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return 0;
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}
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static inline UINTN
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__attribute__((unused))
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StrCSpn(const CHAR16 *s, const CHAR16 *reject)
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{
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UINTN ret;
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for (ret = 0; s[ret] != L'\0'; ret++) {
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int i;
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for (i = 0; reject[i] != L'\0'; i++) {
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if (reject[i] == s[ret])
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return ret;
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}
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}
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return ret;
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}
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/*
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* Test if an entire buffer is nothing but NUL characters. This
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* implementation "gracefully" ignores the difference between the
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* UTF-8/ASCII 1-byte NUL and the UCS-2 2-byte NUL.
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*/
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static inline bool
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__attribute__((__unused__))
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is_all_nuls(UINT8 *data, UINTN data_size)
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{
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UINTN i;
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for (i = 0; i < data_size; i++) {
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if (data[i] != 0)
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return false;
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}
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return true;
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}
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static inline UINTN
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__attribute__((__unused__))
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count_ucs2_strings(UINT8 *data, UINTN data_size)
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{
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UINTN pos = 0;
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UINTN last_nul_pos = 0;
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UINTN num_nuls = 0;
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UINTN i;
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if (data_size % 2 != 0)
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return 0;
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for (i = pos; i < data_size; i++) {
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if (i % 2 != 0) {
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if (data[i] != 0)
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return 0;
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} else if (data[i] == 0) {
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last_nul_pos = i;
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num_nuls++;
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}
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pos = i;
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}
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if (num_nuls > 0 && last_nul_pos != pos - 1)
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return 0;
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return num_nuls;
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}
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#endif /* SHIM_UCS2_H */
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