mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-12-02 12:30:31 +00:00
302 lines
8.7 KiB
C++
302 lines
8.7 KiB
C++
/*
|
|
* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <AK/AnyOf.h>
|
|
#include <AK/ByteBuffer.h>
|
|
#include <AK/Find.h>
|
|
#include <AK/Function.h>
|
|
#include <AK/StringBuilder.h>
|
|
#include <AK/StringView.h>
|
|
#include <AK/Vector.h>
|
|
|
|
#ifndef KERNEL
|
|
# include <AK/DeprecatedFlyString.h>
|
|
# include <AK/DeprecatedString.h>
|
|
# include <AK/FlyString.h>
|
|
# include <AK/String.h>
|
|
#endif
|
|
|
|
namespace AK {
|
|
|
|
#ifndef KERNEL
|
|
StringView::StringView(String const& string)
|
|
: m_characters(reinterpret_cast<char const*>(string.bytes().data()))
|
|
, m_length(string.bytes().size())
|
|
{
|
|
}
|
|
|
|
StringView::StringView(FlyString const& string)
|
|
: m_characters(reinterpret_cast<char const*>(string.bytes().data()))
|
|
, m_length(string.bytes().size())
|
|
{
|
|
}
|
|
|
|
StringView::StringView(DeprecatedString const& string)
|
|
: m_characters(string.characters())
|
|
, m_length(string.length())
|
|
{
|
|
}
|
|
|
|
StringView::StringView(DeprecatedFlyString const& string)
|
|
: m_characters(string.characters())
|
|
, m_length(string.length())
|
|
{
|
|
}
|
|
#endif
|
|
|
|
StringView::StringView(ByteBuffer const& buffer)
|
|
: m_characters((char const*)buffer.data())
|
|
, m_length(buffer.size())
|
|
{
|
|
}
|
|
|
|
Vector<StringView> StringView::split_view(char const separator, SplitBehavior split_behavior) const
|
|
{
|
|
StringView seperator_view { &separator, 1 };
|
|
return split_view(seperator_view, split_behavior);
|
|
}
|
|
|
|
Vector<StringView> StringView::split_view(StringView separator, SplitBehavior split_behavior) const
|
|
{
|
|
Vector<StringView> parts;
|
|
for_each_split_view(separator, split_behavior, [&](StringView view) {
|
|
parts.append(view);
|
|
});
|
|
return parts;
|
|
}
|
|
|
|
Vector<StringView> StringView::lines(bool consider_cr) const
|
|
{
|
|
if (is_empty())
|
|
return {};
|
|
|
|
if (!consider_cr)
|
|
return split_view('\n', SplitBehavior::KeepEmpty);
|
|
|
|
Vector<StringView> v;
|
|
size_t substart = 0;
|
|
bool last_ch_was_cr = false;
|
|
bool split_view = false;
|
|
for (size_t i = 0; i < length(); ++i) {
|
|
char ch = characters_without_null_termination()[i];
|
|
if (ch == '\n') {
|
|
split_view = true;
|
|
if (last_ch_was_cr) {
|
|
substart = i + 1;
|
|
split_view = false;
|
|
}
|
|
}
|
|
if (ch == '\r') {
|
|
split_view = true;
|
|
last_ch_was_cr = true;
|
|
} else {
|
|
last_ch_was_cr = false;
|
|
}
|
|
if (split_view) {
|
|
size_t sublen = i - substart;
|
|
v.append(substring_view(substart, sublen));
|
|
substart = i + 1;
|
|
}
|
|
split_view = false;
|
|
}
|
|
size_t taillen = length() - substart;
|
|
if (taillen != 0)
|
|
v.append(substring_view(substart, taillen));
|
|
return v;
|
|
}
|
|
|
|
bool StringView::starts_with(char ch) const
|
|
{
|
|
if (is_empty())
|
|
return false;
|
|
return ch == characters_without_null_termination()[0];
|
|
}
|
|
|
|
bool StringView::starts_with(StringView str, CaseSensitivity case_sensitivity) const
|
|
{
|
|
return StringUtils::starts_with(*this, str, case_sensitivity);
|
|
}
|
|
|
|
bool StringView::ends_with(char ch) const
|
|
{
|
|
if (is_empty())
|
|
return false;
|
|
return ch == characters_without_null_termination()[length() - 1];
|
|
}
|
|
|
|
bool StringView::ends_with(StringView str, CaseSensitivity case_sensitivity) const
|
|
{
|
|
return StringUtils::ends_with(*this, str, case_sensitivity);
|
|
}
|
|
|
|
bool StringView::matches(StringView mask, Vector<MaskSpan>& mask_spans, CaseSensitivity case_sensitivity) const
|
|
{
|
|
return StringUtils::matches(*this, mask, case_sensitivity, &mask_spans);
|
|
}
|
|
|
|
bool StringView::matches(StringView mask, CaseSensitivity case_sensitivity) const
|
|
{
|
|
return StringUtils::matches(*this, mask, case_sensitivity);
|
|
}
|
|
|
|
bool StringView::contains(char needle) const
|
|
{
|
|
for (char current : *this) {
|
|
if (current == needle)
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool StringView::contains(u32 needle) const
|
|
{
|
|
// A code point should be at most four UTF-8 bytes, which easily fits into StringBuilder's inline-buffer.
|
|
// Therefore, this will not allocate.
|
|
StringBuilder needle_builder;
|
|
auto result = needle_builder.try_append_code_point(needle);
|
|
if (result.is_error()) {
|
|
// The needle is invalid, therefore the string does not contain it.
|
|
return false;
|
|
}
|
|
|
|
return contains(needle_builder.string_view());
|
|
}
|
|
|
|
bool StringView::contains(StringView needle, CaseSensitivity case_sensitivity) const
|
|
{
|
|
return StringUtils::contains(*this, needle, case_sensitivity);
|
|
}
|
|
|
|
bool StringView::equals_ignoring_ascii_case(StringView other) const
|
|
{
|
|
return StringUtils::equals_ignoring_ascii_case(*this, other);
|
|
}
|
|
|
|
#ifndef KERNEL
|
|
DeprecatedString StringView::to_lowercase_string() const
|
|
{
|
|
return StringImpl::create_lowercased(characters_without_null_termination(), length());
|
|
}
|
|
|
|
DeprecatedString StringView::to_uppercase_string() const
|
|
{
|
|
return StringImpl::create_uppercased(characters_without_null_termination(), length());
|
|
}
|
|
|
|
DeprecatedString StringView::to_titlecase_string() const
|
|
{
|
|
return StringUtils::to_titlecase(*this);
|
|
}
|
|
#endif
|
|
|
|
StringView StringView::substring_view_starting_from_substring(StringView substring) const
|
|
{
|
|
char const* remaining_characters = substring.characters_without_null_termination();
|
|
VERIFY(remaining_characters >= m_characters);
|
|
VERIFY(remaining_characters <= m_characters + m_length);
|
|
size_t remaining_length = m_length - (remaining_characters - m_characters);
|
|
return { remaining_characters, remaining_length };
|
|
}
|
|
|
|
StringView StringView::substring_view_starting_after_substring(StringView substring) const
|
|
{
|
|
char const* remaining_characters = substring.characters_without_null_termination() + substring.length();
|
|
VERIFY(remaining_characters >= m_characters);
|
|
VERIFY(remaining_characters <= m_characters + m_length);
|
|
size_t remaining_length = m_length - (remaining_characters - m_characters);
|
|
return { remaining_characters, remaining_length };
|
|
}
|
|
|
|
bool StringView::copy_characters_to_buffer(char* buffer, size_t buffer_size) const
|
|
{
|
|
// We must fit at least the NUL-terminator.
|
|
VERIFY(buffer_size > 0);
|
|
|
|
size_t characters_to_copy = min(m_length, buffer_size - 1);
|
|
__builtin_memcpy(buffer, m_characters, characters_to_copy);
|
|
buffer[characters_to_copy] = 0;
|
|
|
|
return characters_to_copy == m_length;
|
|
}
|
|
|
|
template<typename T>
|
|
Optional<T> StringView::to_int() const
|
|
{
|
|
return StringUtils::convert_to_int<T>(*this);
|
|
}
|
|
|
|
template Optional<i8> StringView::to_int() const;
|
|
template Optional<i16> StringView::to_int() const;
|
|
template Optional<i32> StringView::to_int() const;
|
|
template Optional<long> StringView::to_int() const;
|
|
template Optional<long long> StringView::to_int() const;
|
|
|
|
template<typename T>
|
|
Optional<T> StringView::to_uint() const
|
|
{
|
|
return StringUtils::convert_to_uint<T>(*this);
|
|
}
|
|
|
|
template Optional<u8> StringView::to_uint() const;
|
|
template Optional<u16> StringView::to_uint() const;
|
|
template Optional<u32> StringView::to_uint() const;
|
|
template Optional<unsigned long> StringView::to_uint() const;
|
|
template Optional<unsigned long long> StringView::to_uint() const;
|
|
|
|
#ifndef KERNEL
|
|
Optional<double> StringView::to_double(TrimWhitespace trim_whitespace) const
|
|
{
|
|
return StringUtils::convert_to_floating_point<double>(*this, trim_whitespace);
|
|
}
|
|
|
|
Optional<float> StringView::to_float(TrimWhitespace trim_whitespace) const
|
|
{
|
|
return StringUtils::convert_to_floating_point<float>(*this, trim_whitespace);
|
|
}
|
|
|
|
bool StringView::operator==(DeprecatedString const& string) const
|
|
{
|
|
return *this == string.view();
|
|
}
|
|
|
|
DeprecatedString StringView::to_deprecated_string() const { return DeprecatedString { *this }; }
|
|
|
|
DeprecatedString StringView::replace(StringView needle, StringView replacement, ReplaceMode replace_mode) const
|
|
{
|
|
return StringUtils::replace(*this, needle, replacement, replace_mode);
|
|
}
|
|
#endif
|
|
|
|
Vector<size_t> StringView::find_all(StringView needle) const
|
|
{
|
|
return StringUtils::find_all(*this, needle);
|
|
}
|
|
|
|
Vector<StringView> StringView::split_view_if(Function<bool(char)> const& predicate, SplitBehavior split_behavior) const
|
|
{
|
|
if (is_empty())
|
|
return {};
|
|
|
|
Vector<StringView> v;
|
|
size_t substart = 0;
|
|
bool keep_empty = has_flag(split_behavior, SplitBehavior::KeepEmpty);
|
|
bool keep_separator = has_flag(split_behavior, SplitBehavior::KeepTrailingSeparator);
|
|
for (size_t i = 0; i < length(); ++i) {
|
|
char ch = characters_without_null_termination()[i];
|
|
if (predicate(ch)) {
|
|
size_t sublen = i - substart;
|
|
if (sublen != 0 || keep_empty)
|
|
v.append(substring_view(substart, keep_separator ? sublen + 1 : sublen));
|
|
substart = i + 1;
|
|
}
|
|
}
|
|
size_t taillen = length() - substart;
|
|
if (taillen != 0 || keep_empty)
|
|
v.append(substring_view(substart, taillen));
|
|
return v;
|
|
}
|
|
|
|
}
|