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Diffstat (limited to 'stand/efi/libefi/wchar.c')
-rw-r--r-- | stand/efi/libefi/wchar.c | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/stand/efi/libefi/wchar.c b/stand/efi/libefi/wchar.c new file mode 100644 index 0000000..d8d81ac --- /dev/null +++ b/stand/efi/libefi/wchar.c @@ -0,0 +1,73 @@ +/*- + * Copyright 2016 Netflix, Inc. All Rights Reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <efi.h> +#include <efilib.h> + +/* + * CHAR16 related functions moved from loader. + * Perhaps we should move those to libstand afterall, but they are + * needed only by UEFI. + */ + +int +wcscmp(CHAR16 *a, CHAR16 *b) +{ + + while (*a && *b && *a == *b) { + a++; + b++; + } + return *a - *b; +} + +/* + * cpy8to16 copies a traditional C string into a CHAR16 string and + * 0 terminates it. len is the size of *dst in bytes. + */ +void +cpy8to16(const char *src, CHAR16 *dst, size_t len) +{ + len <<= 1; /* Assume CHAR16 is 2 bytes */ + while (len > 0 && *src) { + *dst++ = *src++; + len--; + } + *dst++ = (CHAR16)0; +} + +void +cpy16to8(const CHAR16 *src, char *dst, size_t len) +{ + size_t i; + + for (i = 0; i < len && src[i]; i++) + dst[i] = (char)src[i]; + if (i < len) + dst[i] = '\0'; +} |