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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 14:30:35 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 14:30:35 +0000 |
commit | 378c18e5f024ac5a8aef4cb40d7c9aa9633d144c (patch) | |
tree | 44dfb6ca500d32cabd450649b322a42e70a30683 /libuuid/src/unparse.c | |
parent | Initial commit. (diff) | |
download | util-linux-upstream.tar.xz util-linux-upstream.zip |
Adding upstream version 2.38.1.upstream/2.38.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | libuuid/src/unparse.c | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/libuuid/src/unparse.c b/libuuid/src/unparse.c new file mode 100644 index 0000000..ffeed2e --- /dev/null +++ b/libuuid/src/unparse.c @@ -0,0 +1,76 @@ +/* + * unparse.c -- convert a UUID to string + * + * Copyright (C) 1996, 1997 Theodore Ts'o. + * + * %Begin-Header% + * 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, and the entire permission notice in its entirety, + * including the disclaimer of warranties. + * 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. + * 3. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior + * written permission. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF + * WHICH ARE HEREBY DISCLAIMED. IN NO EVENT SHALL THE AUTHOR 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 NOT ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * %End-Header% + */ + +#include <stdio.h> +#include "c.h" + +#include "uuidP.h" + +static char const hexdigits_lower[16] = "0123456789abcdef"; +static char const hexdigits_upper[16] = "0123456789ABCDEF"; + +static void uuid_fmt(const uuid_t uuid, char *buf, char const *restrict fmt) +{ + char *p = buf; + int i; + + for (i = 0; i < 16; i++) { + if (i == 4 || i == 6 || i == 8 || i == 10) { + *p++ = '-'; + } + size_t tmp = uuid[i]; + *p++ = fmt[tmp >> 4]; + *p++ = fmt[tmp & 15]; + } + *p = '\0'; +} + +void uuid_unparse_lower(const uuid_t uu, char *out) +{ + uuid_fmt(uu, out, hexdigits_lower); +} + +void uuid_unparse_upper(const uuid_t uu, char *out) +{ + uuid_fmt(uu, out, hexdigits_upper); +} + +void uuid_unparse(const uuid_t uu, char *out) +{ +#ifdef UUID_UNPARSE_DEFAULT_UPPER + uuid_fmt(uu, out, hexdigits_upper); +#else + uuid_fmt(uu, out, hexdigits_lower); +#endif +} |