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https://github.com/jart/cosmopolitan.git
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2c5e7ec547
Noticed because the settings they specified weren't getting picked up by editor sessions in those files.
111 lines
2.6 KiB
C++
111 lines
2.6 KiB
C++
// -*- mode:c++; indent-tabs-mode:nil; c-basic-offset:4; coding:utf-8 -*-
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// vi: set et ft=cpp ts=4 sts=4 sw=4 fenc=utf-8 :vi
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//
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// Copyright 2024 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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#include "string_view.h"
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#include <stdckdint.h>
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#include <string.h>
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#include "string.h"
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namespace ctl {
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size_t
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string_view::find(char ch, size_t pos) const noexcept
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{
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char* q;
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if (n && (q = (char*)memchr(p, ch, n)))
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return q - p;
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return npos;
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}
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size_t
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string_view::find(const string_view s, size_t pos) const noexcept
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{
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char* q;
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if (pos > n)
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__builtin_trap();
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if ((q = (char*)memmem(p + pos, n - pos, s.p, s.n)))
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return q - p;
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return npos;
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}
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string_view
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string_view::substr(size_t pos, size_t count) const noexcept
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{
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size_t last;
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if (pos > n)
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__builtin_trap();
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if (count > n - pos)
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count = n - pos;
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if (ckd_add(&last, pos, count))
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last = n;
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if (last > n)
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__builtin_trap();
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return string_view(p + pos, count);
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}
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bool
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string_view::operator==(const string_view s) const noexcept
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{
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if (n != s.n)
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return false;
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if (!n)
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return true;
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return !memcmp(p, s.p, n);
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}
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bool
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string_view::operator!=(const string_view s) const noexcept
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{
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if (n != s.n)
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return true;
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if (!n)
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return false;
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return !!memcmp(p, s.p, n);
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}
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bool
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string_view::contains(const string_view s) const noexcept
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{
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if (!s.n)
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return true;
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return !!memmem(p, n, s.p, s.n);
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}
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bool
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string_view::ends_with(const string_view s) const noexcept
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{
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if (n < s.n)
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return false;
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if (!s.n)
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return true;
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return !memcmp(p + n - s.n, s.p, s.n);
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}
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bool
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string_view::starts_with(const string_view s) const noexcept
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{
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if (n < s.n)
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return false;
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if (!s.n)
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return true;
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return !memcmp(p, s.p, s.n);
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}
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} // namespace ctl
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