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https://github.com/jart/cosmopolitan.git
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6e6fc38935
Commit bc6c183 introduced a bunch of discrepancies between what files
look like in the repo and what clang-format says they should look like.
However, there were already a few discrepancies prior to that. Most of
these discrepancies seemed to be unintentional, but a few of them were
load-bearing (e.g., a #include that violated header ordering needing
something to have been #defined by a 'later' #include.)
I opted to take what I hope is a relatively smooth-brained approach: I
reverted the .clang-format change, ran clang-format on the whole repo,
reapplied the .clang-format change, reran clang-format again, and then
reverted the commit that contained the first run. Thus the full effect
of this PR should only be to apply the changed formatting rules to the
repo, and from skimming the results, this seems to be the case.
My work can be checked by applying the short, manual commits, and then
rerunning the command listed in the autogenerated commits (those whose
messages I have prefixed auto:) and seeing if your results agree.
It might be that the other diffs should be fixed at some point but I'm
leaving that aside for now.
fd '\.c(c|pp)?$' --print0| xargs -0 clang-format -i
107 lines
3.8 KiB
C
107 lines
3.8 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│ vi: set et ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi │
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2021 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/fmt/conv.h"
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#include "libc/stdckdint.h"
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#include "libc/str/str.h"
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#include "libc/sysv/errfuns.h"
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static int GetExponent(int c) {
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switch (c) {
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case '\0':
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case ' ':
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case '\t':
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return 0;
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case 'k':
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case 'K':
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return 1;
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case 'm':
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case 'M':
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return 2;
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case 'g':
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case 'G':
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return 3;
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case 't':
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case 'T':
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return 4;
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case 'p':
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case 'P':
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return 5;
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case 'e':
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case 'E':
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return 6;
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default:
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return -1;
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}
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}
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/**
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* Converts size string to long.
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*
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* The following unit suffixes may be used
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*
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* - `k` or `K` for kilo (multiply by 𝑏¹)
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* - `m` or `M` for mega (multiply by 𝑏²)
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* - `g` or `G` for giga (multiply by 𝑏³)
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* - `t` or `T` for tera (multiply by 𝑏⁴)
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* - `p` or `P` for peta (multiply by 𝑏⁵)
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* - `e` or `E` for exa (multiply by 𝑏⁶)
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*
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* If a permitted alpha character is supplied, then any additional
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* characters after it (e.g. kbit, Mibit, TiB) are ignored. Spaces
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* before the integer are ignored, and overflows will be detected.
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*
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* Negative numbers are permissible, as well as a leading `+` sign. To
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* tell the difference between an error return and `-1` you must clear
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* `errno` before calling and test whether it changed.
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*
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* @param s is non-null nul-terminated input string
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* @param b is multiplier which should be 1000 or 1024
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* @return size greater than or equal 0 or -1 on error
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* @error EINVAL if error is due to bad syntax
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* @error EOVERFLOW if error is due to overflow
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*/
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long sizetol(const char *s, long b) {
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long x;
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int c, e, d;
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do {
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c = *s++;
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} while (c == ' ' || c == '\t');
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d = c == '-' ? -1 : 1;
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if (c == '-' || c == '+')
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c = *s++;
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if (!isdigit(c)) {
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return einval();
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}
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x = 0;
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do {
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if (ckd_mul(&x, x, 10) || ckd_add(&x, x, (c - '0') * d)) {
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return eoverflow();
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}
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} while (isdigit((c = *s++)));
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if ((e = GetExponent(c)) == -1) {
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return einval();
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}
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while (e--) {
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if (ckd_mul(&x, x, b)) {
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return eoverflow();
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}
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}
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return x;
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}
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