2020-01-18 08:38:21 +00:00
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/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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2021-04-22 08:24:48 +00:00
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* SPDX-License-Identifier: BSD-2-Clause
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2020-01-18 08:38:21 +00:00
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*/
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2020-11-15 12:11:21 +00:00
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#include <AK/ByteBuffer.h>
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2020-03-22 18:07:02 +00:00
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#include <AK/FlyString.h>
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2020-09-22 11:27:40 +00:00
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#include <AK/Format.h>
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2020-03-08 11:34:33 +00:00
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#include <AK/Memory.h>
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2019-09-06 13:34:26 +00:00
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#include <AK/StdLibExtras.h>
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#include <AK/String.h>
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2020-03-23 12:45:10 +00:00
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#include <AK/StringView.h>
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2020-02-14 20:41:10 +00:00
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#include <AK/Vector.h>
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2018-10-10 09:53:07 +00:00
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namespace AK {
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2020-03-23 12:45:10 +00:00
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String::String(const StringView& view)
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{
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2021-04-16 23:18:39 +00:00
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m_impl = StringImpl::create(view.characters_without_null_termination(), view.length());
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2020-03-23 12:45:10 +00:00
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}
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2020-03-28 08:11:00 +00:00
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bool String::operator==(const FlyString& fly_string) const
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{
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return *this == String(fly_string.impl());
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}
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2018-10-10 09:53:07 +00:00
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bool String::operator==(const String& other) const
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{
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if (!m_impl)
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return !other.m_impl;
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if (!other.m_impl)
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return false;
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2020-10-05 15:15:49 +00:00
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return *m_impl == *other.m_impl;
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2018-10-10 09:53:07 +00:00
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}
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2019-08-24 20:28:42 +00:00
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bool String::operator==(const StringView& other) const
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{
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if (!m_impl)
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return !other.m_characters;
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if (!other.m_characters)
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return false;
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if (length() != other.length())
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return false;
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return !memcmp(characters(), other.characters_without_null_termination(), length());
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}
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2019-03-09 12:33:52 +00:00
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bool String::operator<(const String& other) const
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{
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if (!m_impl)
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return other.m_impl;
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if (!other.m_impl)
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return false;
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2019-03-09 13:24:34 +00:00
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return strcmp(characters(), other.characters()) < 0;
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2019-03-09 12:33:52 +00:00
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}
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2019-10-19 18:50:55 +00:00
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bool String::operator>(const String& other) const
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{
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if (!m_impl)
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return other.m_impl;
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if (!other.m_impl)
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return false;
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return strcmp(characters(), other.characters()) > 0;
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}
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2018-10-10 09:53:07 +00:00
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String String::empty()
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{
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2018-12-21 01:10:45 +00:00
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return StringImpl::the_empty_stringimpl();
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2018-10-10 09:53:07 +00:00
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}
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2020-08-25 14:23:18 +00:00
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bool String::copy_characters_to_buffer(char* buffer, size_t buffer_size) const
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{
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// We must fit at least the NUL-terminator.
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2021-02-23 19:42:32 +00:00
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VERIFY(buffer_size > 0);
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2020-08-25 14:23:18 +00:00
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size_t characters_to_copy = min(length(), buffer_size - 1);
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__builtin_memcpy(buffer, characters(), characters_to_copy);
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buffer[characters_to_copy] = 0;
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return characters_to_copy == length();
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}
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2018-12-21 01:10:45 +00:00
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String String::isolated_copy() const
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2018-10-26 07:54:29 +00:00
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{
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if (!m_impl)
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2019-05-28 09:53:16 +00:00
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return {};
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2018-10-26 07:54:29 +00:00
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if (!m_impl->length())
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return empty();
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char* buffer;
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2018-12-21 01:10:45 +00:00
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auto impl = StringImpl::create_uninitialized(length(), buffer);
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2018-10-26 07:54:29 +00:00
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memcpy(buffer, m_impl->characters(), m_impl->length());
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return String(move(*impl));
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}
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2020-12-10 17:57:56 +00:00
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String String::substring(size_t start) const
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{
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2021-02-23 19:42:32 +00:00
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VERIFY(m_impl);
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VERIFY(start <= length());
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2020-12-10 17:57:56 +00:00
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return { characters() + start, length() - start };
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}
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2019-12-09 16:45:40 +00:00
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String String::substring(size_t start, size_t length) const
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2018-10-16 09:42:39 +00:00
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{
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2019-03-08 13:08:15 +00:00
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if (!length)
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2020-07-26 03:09:33 +00:00
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return "";
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2021-02-23 19:42:32 +00:00
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VERIFY(m_impl);
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VERIFY(start + length <= m_impl->length());
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2018-10-16 09:42:39 +00:00
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// FIXME: This needs some input bounds checking.
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2019-04-16 00:39:16 +00:00
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return { characters() + start, length };
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}
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2019-12-09 16:45:40 +00:00
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StringView String::substring_view(size_t start, size_t length) const
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2019-04-16 00:39:16 +00:00
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{
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2021-02-23 19:42:32 +00:00
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VERIFY(m_impl);
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VERIFY(start + length <= m_impl->length());
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2019-04-16 00:39:16 +00:00
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// FIXME: This needs some input bounds checking.
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return { characters() + start, length };
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2018-10-16 09:42:39 +00:00
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}
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2020-12-01 22:11:20 +00:00
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StringView String::substring_view(size_t start) const
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{
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2021-02-23 19:42:32 +00:00
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VERIFY(m_impl);
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VERIFY(start <= length());
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2020-12-01 22:11:20 +00:00
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return { characters() + start, length() - start };
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}
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2020-01-22 14:17:27 +00:00
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Vector<String> String::split(char separator, bool keep_empty) const
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2019-06-04 08:13:07 +00:00
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{
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2020-01-22 14:17:27 +00:00
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return split_limit(separator, 0, keep_empty);
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2019-06-04 08:13:07 +00:00
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}
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2020-01-22 14:17:27 +00:00
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Vector<String> String::split_limit(char separator, size_t limit, bool keep_empty) const
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2018-10-10 09:53:07 +00:00
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{
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2018-12-21 01:10:45 +00:00
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if (is_empty())
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2019-05-28 09:53:16 +00:00
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return {};
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2018-10-10 09:53:07 +00:00
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2018-10-16 09:42:39 +00:00
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Vector<String> v;
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2019-12-09 16:45:40 +00:00
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size_t substart = 0;
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2020-03-01 11:35:09 +00:00
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for (size_t i = 0; i < length() && (v.size() + 1) != limit; ++i) {
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2018-10-16 09:42:39 +00:00
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char ch = characters()[i];
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2018-10-10 09:53:07 +00:00
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if (ch == separator) {
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2019-12-09 16:45:40 +00:00
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size_t sublen = i - substart;
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2020-01-22 14:17:27 +00:00
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if (sublen != 0 || keep_empty)
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2018-10-16 09:42:39 +00:00
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v.append(substring(substart, sublen));
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substart = i + 1;
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2018-10-10 09:53:07 +00:00
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}
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}
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2019-12-09 16:45:40 +00:00
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size_t taillen = length() - substart;
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2020-01-22 14:17:27 +00:00
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if (taillen != 0 || keep_empty)
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2018-10-16 09:42:39 +00:00
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v.append(substring(substart, taillen));
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return v;
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2018-10-10 09:53:07 +00:00
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}
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2019-09-20 21:43:37 +00:00
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Vector<StringView> String::split_view(const char separator, bool keep_empty) const
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2019-04-16 00:39:16 +00:00
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{
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if (is_empty())
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2019-05-28 09:53:16 +00:00
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return {};
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2019-04-16 00:39:16 +00:00
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Vector<StringView> v;
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2019-12-09 16:45:40 +00:00
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size_t substart = 0;
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for (size_t i = 0; i < length(); ++i) {
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2019-04-16 00:39:16 +00:00
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char ch = characters()[i];
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if (ch == separator) {
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2019-12-09 16:45:40 +00:00
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size_t sublen = i - substart;
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2019-09-20 21:43:37 +00:00
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if (sublen != 0 || keep_empty)
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2019-04-16 00:39:16 +00:00
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v.append(substring_view(substart, sublen));
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substart = i + 1;
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}
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}
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2019-12-09 16:45:40 +00:00
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size_t taillen = length() - substart;
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2019-09-20 21:43:37 +00:00
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if (taillen != 0 || keep_empty)
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2019-04-16 00:39:16 +00:00
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v.append(substring_view(substart, taillen));
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return v;
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}
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2018-12-21 01:10:45 +00:00
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ByteBuffer String::to_byte_buffer() const
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2018-10-10 09:53:07 +00:00
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{
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if (!m_impl)
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2021-01-10 23:29:28 +00:00
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return {};
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2019-07-03 19:17:35 +00:00
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return ByteBuffer::copy(reinterpret_cast<const u8*>(characters()), length());
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2018-10-10 09:53:07 +00:00
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}
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2020-12-10 13:17:30 +00:00
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template<typename T>
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Optional<T> String::to_int() const
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2019-04-18 23:05:59 +00:00
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{
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2020-12-10 13:17:30 +00:00
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return StringUtils::convert_to_int<T>(view());
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2019-04-18 23:05:59 +00:00
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}
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2020-12-10 13:17:30 +00:00
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template Optional<i8> String::to_int() const;
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template Optional<i16> String::to_int() const;
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template Optional<i32> String::to_int() const;
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template Optional<i64> String::to_int() const;
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template<typename T>
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Optional<T> String::to_uint() const
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2018-10-31 18:49:22 +00:00
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{
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2020-12-10 13:17:30 +00:00
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return StringUtils::convert_to_uint<T>(view());
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2018-10-31 18:49:22 +00:00
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}
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2020-12-10 13:17:30 +00:00
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template Optional<u8> String::to_uint() const;
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template Optional<u16> String::to_uint() const;
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template Optional<u32> String::to_uint() const;
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template Optional<u64> String::to_uint() const;
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2020-07-18 16:59:38 +00:00
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bool String::starts_with(const StringView& str, CaseSensitivity case_sensitivity) const
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2019-06-04 11:53:25 +00:00
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{
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2020-07-18 16:59:38 +00:00
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return StringUtils::starts_with(*this, str, case_sensitivity);
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2019-06-04 11:53:25 +00:00
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}
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2020-02-15 00:04:00 +00:00
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bool String::starts_with(char ch) const
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{
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if (is_empty())
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return false;
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return characters()[0] == ch;
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}
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2020-05-26 09:12:18 +00:00
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bool String::ends_with(const StringView& str, CaseSensitivity case_sensitivity) const
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2019-03-22 11:43:29 +00:00
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{
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2020-05-26 09:12:18 +00:00
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return StringUtils::ends_with(*this, str, case_sensitivity);
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2019-03-22 11:43:29 +00:00
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}
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2020-02-15 00:04:00 +00:00
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bool String::ends_with(char ch) const
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{
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if (is_empty())
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return false;
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return characters()[length() - 1] == ch;
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}
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2019-12-09 16:45:40 +00:00
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String String::repeated(char ch, size_t count)
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2019-04-25 20:56:09 +00:00
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{
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if (!count)
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return empty();
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char* buffer;
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auto impl = StringImpl::create_uninitialized(count, buffer);
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memset(buffer, ch, count);
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return *impl;
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}
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2021-04-30 21:31:53 +00:00
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String String::bijective_base_from(size_t value, unsigned base, StringView map)
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{
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if (map.is_null())
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map = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"sv;
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VERIFY(base >= 2 && base <= map.length());
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// The '8 bits per byte' assumption may need to go?
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Array<char, round_up_to_power_of_two(sizeof(size_t) * 8 + 1, 2)> buffer;
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size_t i = 0;
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do {
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buffer[i++] = map[value % base];
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value /= base;
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} while (value > 0);
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// NOTE: Weird as this may seem, the thing that comes after 'Z' is 'AA', which as a number would be '00'
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// to make this work, only the most significant digit has to be in a range of (1..25) as opposed to (0..25),
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// but only if it's not the only digit in the string.
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if (i > 1)
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--buffer[i - 1];
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for (size_t j = 0; j < i / 2; ++j)
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swap(buffer[j], buffer[i - j - 1]);
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return String { ReadonlyBytes(buffer.data(), i) };
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}
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2020-10-25 05:34:39 +00:00
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bool String::matches(const StringView& mask, Vector<MaskSpan>& mask_spans, CaseSensitivity case_sensitivity) const
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{
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return StringUtils::matches(*this, mask, case_sensitivity, &mask_spans);
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}
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2019-06-02 10:26:28 +00:00
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bool String::matches(const StringView& mask, CaseSensitivity case_sensitivity) const
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2019-05-26 18:36:16 +00:00
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{
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2020-02-26 07:25:24 +00:00
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return StringUtils::matches(*this, mask, case_sensitivity);
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2019-05-26 18:36:16 +00:00
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}
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2020-10-20 21:07:03 +00:00
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bool String::contains(const StringView& needle, CaseSensitivity case_sensitivity) const
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2019-10-28 17:47:48 +00:00
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{
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2020-10-20 21:07:03 +00:00
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return StringUtils::contains(*this, needle, case_sensitivity);
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2019-10-28 17:47:48 +00:00
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}
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2020-07-12 17:36:48 +00:00
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Optional<size_t> String::index_of(const String& needle, size_t start) const
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2020-04-13 16:23:19 +00:00
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{
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if (is_null() || needle.is_null())
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return {};
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const char* self_characters = characters();
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2020-07-12 17:36:48 +00:00
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const char* result = strstr(self_characters + start, needle.characters());
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2020-04-13 16:23:19 +00:00
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if (!result)
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|
return {};
|
|
|
|
return Optional<size_t> { result - self_characters };
|
|
|
|
}
|
|
|
|
|
2019-12-18 11:43:53 +00:00
|
|
|
bool String::equals_ignoring_case(const StringView& other) const
|
|
|
|
{
|
2020-03-22 12:07:45 +00:00
|
|
|
return StringUtils::equals_ignoring_case(view(), other);
|
2018-10-10 09:53:07 +00:00
|
|
|
}
|
2019-10-28 17:47:48 +00:00
|
|
|
|
2020-10-02 21:14:37 +00:00
|
|
|
int String::replace(const String& needle, const String& replacement, bool all_occurrences)
|
2020-04-01 19:27:39 +00:00
|
|
|
{
|
|
|
|
if (is_empty())
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
Vector<size_t> positions;
|
|
|
|
size_t start = 0, pos;
|
|
|
|
for (;;) {
|
|
|
|
const char* ptr = strstr(characters() + start, needle.characters());
|
|
|
|
if (!ptr)
|
|
|
|
break;
|
|
|
|
|
|
|
|
pos = ptr - characters();
|
|
|
|
positions.append(pos);
|
2020-10-02 21:14:37 +00:00
|
|
|
if (!all_occurrences)
|
2020-04-01 19:27:39 +00:00
|
|
|
break;
|
|
|
|
|
|
|
|
start = pos + 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!positions.size())
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
StringBuilder b;
|
|
|
|
size_t lastpos = 0;
|
|
|
|
for (auto& pos : positions) {
|
|
|
|
b.append(substring_view(lastpos, pos - lastpos));
|
|
|
|
b.append(replacement);
|
|
|
|
lastpos = pos + needle.length();
|
|
|
|
}
|
|
|
|
b.append(substring_view(lastpos, length() - lastpos));
|
|
|
|
m_impl = StringImpl::create(b.build().characters());
|
|
|
|
return positions.size();
|
|
|
|
}
|
|
|
|
|
2020-12-26 10:30:14 +00:00
|
|
|
String String::reverse() const
|
|
|
|
{
|
|
|
|
StringBuilder reversed_string;
|
|
|
|
for (size_t i = length(); i-- > 0;) {
|
|
|
|
reversed_string.append(characters()[i]);
|
|
|
|
}
|
|
|
|
return reversed_string.to_string();
|
|
|
|
}
|
|
|
|
|
2020-02-13 07:46:00 +00:00
|
|
|
String escape_html_entities(const StringView& html)
|
|
|
|
{
|
|
|
|
StringBuilder builder;
|
|
|
|
for (size_t i = 0; i < html.length(); ++i) {
|
|
|
|
if (html[i] == '<')
|
|
|
|
builder.append("<");
|
|
|
|
else if (html[i] == '>')
|
|
|
|
builder.append(">");
|
|
|
|
else if (html[i] == '&')
|
|
|
|
builder.append("&");
|
|
|
|
else
|
|
|
|
builder.append(html[i]);
|
|
|
|
}
|
|
|
|
return builder.to_string();
|
2019-12-18 11:43:53 +00:00
|
|
|
}
|
2019-12-30 13:52:04 +00:00
|
|
|
|
2020-03-22 18:07:02 +00:00
|
|
|
String::String(const FlyString& string)
|
|
|
|
: m_impl(string.impl())
|
|
|
|
{
|
|
|
|
}
|
|
|
|
|
|
|
|
String String::to_lowercase() const
|
|
|
|
{
|
|
|
|
if (!m_impl)
|
|
|
|
return {};
|
|
|
|
return m_impl->to_lowercase();
|
|
|
|
}
|
|
|
|
|
|
|
|
String String::to_uppercase() const
|
|
|
|
{
|
|
|
|
if (!m_impl)
|
|
|
|
return {};
|
|
|
|
return m_impl->to_uppercase();
|
|
|
|
}
|
|
|
|
|
2021-02-20 21:39:22 +00:00
|
|
|
String String::to_snakecase() const
|
|
|
|
{
|
|
|
|
return StringUtils::to_snakecase(*this);
|
|
|
|
}
|
|
|
|
|
2020-03-23 12:45:10 +00:00
|
|
|
bool operator<(const char* characters, const String& string)
|
|
|
|
{
|
|
|
|
if (!characters)
|
|
|
|
return !string.is_null();
|
|
|
|
|
|
|
|
if (string.is_null())
|
|
|
|
return false;
|
|
|
|
|
|
|
|
return __builtin_strcmp(characters, string.characters()) < 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
bool operator>=(const char* characters, const String& string)
|
|
|
|
{
|
|
|
|
return !(characters < string);
|
|
|
|
}
|
|
|
|
|
|
|
|
bool operator>(const char* characters, const String& string)
|
|
|
|
{
|
|
|
|
if (!characters)
|
|
|
|
return !string.is_null();
|
|
|
|
|
|
|
|
if (string.is_null())
|
|
|
|
return false;
|
|
|
|
|
|
|
|
return __builtin_strcmp(characters, string.characters()) > 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
bool operator<=(const char* characters, const String& string)
|
|
|
|
{
|
|
|
|
return !(characters > string);
|
|
|
|
}
|
|
|
|
|
|
|
|
bool String::operator==(const char* cstring) const
|
|
|
|
{
|
|
|
|
if (is_null())
|
|
|
|
return !cstring;
|
|
|
|
if (!cstring)
|
|
|
|
return false;
|
|
|
|
return !__builtin_strcmp(characters(), cstring);
|
|
|
|
}
|
|
|
|
|
|
|
|
StringView String::view() const
|
|
|
|
{
|
|
|
|
return { characters(), length() };
|
|
|
|
}
|
|
|
|
|
2020-09-23 11:21:18 +00:00
|
|
|
InputStream& operator>>(InputStream& stream, String& string)
|
|
|
|
{
|
|
|
|
StringBuilder builder;
|
|
|
|
|
|
|
|
for (;;) {
|
|
|
|
char next_char;
|
|
|
|
stream >> next_char;
|
|
|
|
|
|
|
|
if (stream.has_any_error()) {
|
|
|
|
stream.set_fatal_error();
|
|
|
|
string = nullptr;
|
|
|
|
return stream;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (next_char) {
|
|
|
|
builder.append(next_char);
|
|
|
|
} else {
|
|
|
|
string = builder.to_string();
|
|
|
|
return stream;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2020-10-02 13:21:30 +00:00
|
|
|
String String::vformatted(StringView fmtstr, TypeErasedFormatParams params)
|
2020-09-23 11:21:18 +00:00
|
|
|
{
|
|
|
|
StringBuilder builder;
|
2020-10-02 13:21:30 +00:00
|
|
|
vformat(builder, fmtstr, params);
|
2020-09-23 11:21:18 +00:00
|
|
|
return builder.to_string();
|
|
|
|
}
|
|
|
|
|
2021-01-12 19:58:45 +00:00
|
|
|
Optional<size_t> String::find(char c) const
|
|
|
|
{
|
|
|
|
return find(StringView { &c, 1 });
|
|
|
|
}
|
|
|
|
|
|
|
|
Optional<size_t> String::find(const StringView& view) const
|
|
|
|
{
|
|
|
|
return StringUtils::find(*this, view);
|
|
|
|
}
|
|
|
|
|
2020-02-13 07:46:00 +00:00
|
|
|
}
|