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authorIan Moffett <ian@osmora.org>2024-06-24 22:55:29 -0400
committerIan Moffett <ian@osmora.org>2024-06-24 22:55:29 -0400
commit236963e7563be3e3f8220dac7bb4af446928e194 (patch)
treee521ea226db0345bbb3679fffe09d96254b7dc73 /sys/lib/string/vsnprintf.c
parent214eadc62b5578f76c98a38a28f8b3d80ac4d6ad (diff)
Clean out for expt
Signed-off-by: Ian Moffett <ian@osmora.org>
Diffstat (limited to 'sys/lib/string/vsnprintf.c')
-rw-r--r--sys/lib/string/vsnprintf.c139
1 files changed, 0 insertions, 139 deletions
diff --git a/sys/lib/string/vsnprintf.c b/sys/lib/string/vsnprintf.c
deleted file mode 100644
index b8a4faa..0000000
--- a/sys/lib/string/vsnprintf.c
+++ /dev/null
@@ -1,139 +0,0 @@
-/*
- * Copyright (c) 2023-2024 Ian Marco Moffett and the Osmora Team.
- * 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.
- * 3. Neither the name of Hyra nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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 <string.h>
-#include <stdarg.h>
-#include <sys/types.h>
-
-static inline void
-printc(char *buf, size_t size, size_t *off, char c)
-{
- if (*off < size - 1) {
- buf[(*off)++] = c;
- }
- buf[*off] = 0;
-}
-
-static void
-printstr(char *buf, size_t size, size_t *off, const char *s)
-{
- while (*off < size - 1 && *s != '\0') {
- buf[(*off)++] = *(s)++;
- }
- buf[*off] = 0;
-}
-
-int
-snprintf(char *s, size_t size, const char *fmt, ...)
-{
- va_list ap;
- int ret;
-
- va_start(ap, fmt);
- ret = vsnprintf(s, size, fmt, ap);
- va_end(ap);
- return ret;
-}
-
-int
-vsnprintf(char *s, size_t size, const char *fmt, va_list ap)
-{
- size_t tmp_len, num_len, off = 0;
- ssize_t num = 0;
- char c, c1, num_buf[256] = {0};
- const char *tmp_str;
- uint8_t pad_width = 0;
-
- while (off < (size - 1)) {
- while (*fmt && *fmt != '%') {
- printc(s, size, &off, *fmt++);
- }
- if (*(fmt)++ == '\0' || off == size - 1) {
- return off;
- }
-
- /*
- * Handle a case where we have "%0N". For example:
- * "%04d"
- */
- if (*fmt == '0') {
- ++fmt;
- while (*fmt >= '0' && *fmt <= '9') {
- pad_width = pad_width * 10 + (*fmt - '0');
- ++fmt;
- }
- }
-
- c = *fmt++;
- switch (c) {
- case 'c':
- c1 = (char )va_arg(ap, int);
- printc(s, size, &off, c1);
- break;
- case 'd':
- num = va_arg(ap, int);
- itoa(num, num_buf, 10);
-
- if (pad_width > 0) {
- num_len = strlen(num_buf);
- for (size_t i = num_len; i < pad_width; ++i)
- printc(s, size, &off, '0');
- }
- printstr(s, size, &off, num_buf);
- break;
- case 'p':
- num = va_arg(ap, uint64_t);
- itoa(num, num_buf, 16);
- tmp_len = strlen(num_buf);
- /*
- * Now we pad this.
- *
- * XXX TODO: This assumes 64-bits, should be
- * cleaned up.
- */
- for (size_t i = 0; i < 18 - tmp_len; ++i) {
- printc(s, size, &off, '0');
- }
- printstr(s, size, &off, num_buf + 2);
- break;
- case 'x':
- num = va_arg(ap, uint64_t);
- itoa(num, num_buf, 16);
- tmp_len = strlen(num_buf);
- printstr(s, size, &off, num_buf + 2);
- break;
- case 's':
- tmp_str = va_arg(ap, const char *);
- printstr(s, size, &off, tmp_str);
- break;
- }
- }
-
- return 0;
-}