From 236963e7563be3e3f8220dac7bb4af446928e194 Mon Sep 17 00:00:00 2001 From: Ian Moffett Date: Mon, 24 Jun 2024 22:55:29 -0400 Subject: Clean out for expt Signed-off-by: Ian Moffett --- lib/libc/src/stdio/vsnprintf.c | 130 ----------------------------------------- 1 file changed, 130 deletions(-) delete mode 100644 lib/libc/src/stdio/vsnprintf.c (limited to 'lib/libc/src/stdio/vsnprintf.c') diff --git a/lib/libc/src/stdio/vsnprintf.c b/lib/libc/src/stdio/vsnprintf.c deleted file mode 100644 index 112ed1f..0000000 --- a/lib/libc/src/stdio/vsnprintf.c +++ /dev/null @@ -1,130 +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 -#include -#include - -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; -} - -static void -dec_to_str(int value, char *buf, size_t size, size_t *off) -{ - size_t i = 0; - uint8_t is_negative = 0; - uint8_t tmp; - char intbuf[4096]; - - if (value == 0) { - intbuf[i++] = '0'; - intbuf[i++] = '\0'; - printstr(buf, size, off, intbuf); - return; - } - - if (value < 0) { - /* Easier to handle positive numbers */ - value *= -1; - is_negative = 1; - } - - while (value > 0) { - intbuf[i++] = '0' + (value % 10); - value /= 10; - } - - if (is_negative) { - intbuf[i++] = '-'; - } - - intbuf[i--] = '\0'; - - /* Result is in reverse */ - for (int j = 0; j < i; ++j, --i) { - tmp = intbuf[j]; - intbuf[j] = intbuf[i]; - intbuf[i] = tmp; - } - - printstr(buf, size, off, intbuf); -} - -int -vsnprintf(char *s, size_t size, const char *fmt, va_list ap) -{ - size_t tmp_len, off = 0; - ssize_t num = 0; - char c, c1; - const char *tmp_str; - int tmp_num; - - while (off < (size - 1)) { - while (*fmt && *fmt != '%') { - printc(s, size, &off, *fmt++); - } - - if (*(fmt)++ == '\0' || off == size - 1) { - return off; - } - - c = *fmt++; - switch (c) { - case 'c': - c1 = (char)va_arg(ap, int); - printc(s, size, &off, c1); - break; - case 's': - tmp_str = va_arg(ap, const char *); - printstr(s, size, &off, tmp_str); - break; - case 'd': - tmp_num = va_arg(ap, int); - dec_to_str(tmp_num, s, size, &off); - break; - } - } - - return 0; -} -- cgit v1.2.3