mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-08-17 09:20:28 +03:00
1228 lines
41 KiB
C++
1228 lines
41 KiB
C++
/*
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* Copyright (c) 2020, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/CharacterTypes.h>
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#include <AK/Format.h>
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#include <AK/GenericLexer.h>
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#include <AK/IntegralMath.h>
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#include <AK/LexicalPath.h>
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#include <AK/String.h>
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#include <AK/StringBuilder.h>
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#include <AK/StringFloatingPointConversions.h>
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#include <math.h>
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#include <stdio.h>
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#include <string.h>
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#include <time.h>
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#if defined(AK_OS_SERENITY)
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# include <serenity.h>
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#endif
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#if defined(AK_OS_ANDROID)
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# include <android/log.h>
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#endif
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namespace AK {
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class FormatParser : public GenericLexer {
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public:
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struct FormatSpecifier {
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StringView flags;
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size_t index;
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};
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explicit FormatParser(StringView input);
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StringView consume_literal();
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bool consume_number(size_t& value);
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bool consume_specifier(FormatSpecifier& specifier);
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bool consume_replacement_field(size_t& index);
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};
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namespace {
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static constexpr size_t use_next_index = NumericLimits<size_t>::max();
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// The worst case is that we have the largest 64-bit value formatted as binary number, this would take
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// 65 bytes (85 bytes with separators). Choosing a larger power of two won't hurt and is a bit of mitigation against out-of-bounds accesses.
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static constexpr size_t convert_unsigned_to_string(u64 value, Array<u8, 128>& buffer, u8 base, bool upper_case, bool use_separator)
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{
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VERIFY(base >= 2 && base <= 16);
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constexpr char const* lowercase_lookup = "0123456789abcdef";
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constexpr char const* uppercase_lookup = "0123456789ABCDEF";
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if (value == 0) {
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buffer[0] = '0';
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return 1;
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}
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size_t used = 0;
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size_t digit_count = 0;
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while (value > 0) {
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if (upper_case)
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buffer[used++] = uppercase_lookup[value % base];
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else
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buffer[used++] = lowercase_lookup[value % base];
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digit_count++;
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value /= base;
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if (use_separator && value > 0 && digit_count % 3 == 0)
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buffer[used++] = ',';
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}
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for (size_t i = 0; i < used / 2; ++i)
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swap(buffer[i], buffer[used - i - 1]);
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return used;
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}
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ErrorOr<void> vformat_impl(TypeErasedFormatParams& params, FormatBuilder& builder, FormatParser& parser)
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{
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auto const literal = parser.consume_literal();
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TRY(builder.put_literal(literal));
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FormatParser::FormatSpecifier specifier;
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if (!parser.consume_specifier(specifier)) {
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VERIFY(parser.is_eof());
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return {};
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}
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if (specifier.index == use_next_index)
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specifier.index = params.take_next_index();
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auto& parameter = params.parameters().at(specifier.index);
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FormatParser argparser { specifier.flags };
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TRY(parameter.formatter(params, builder, argparser, parameter.value));
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TRY(vformat_impl(params, builder, parser));
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return {};
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}
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} // namespace AK::{anonymous}
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FormatParser::FormatParser(StringView input)
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: GenericLexer(input)
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{
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}
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StringView FormatParser::consume_literal()
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{
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auto const begin = tell();
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while (!is_eof()) {
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if (consume_specific("{{"sv))
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continue;
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if (consume_specific("}}"sv))
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continue;
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if (next_is(is_any_of("{}"sv)))
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return m_input.substring_view(begin, tell() - begin);
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consume();
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}
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return m_input.substring_view(begin);
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}
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bool FormatParser::consume_number(size_t& value)
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{
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value = 0;
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bool consumed_at_least_one = false;
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while (next_is(is_ascii_digit)) {
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value *= 10;
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value += parse_ascii_digit(consume());
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consumed_at_least_one = true;
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}
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return consumed_at_least_one;
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}
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bool FormatParser::consume_specifier(FormatSpecifier& specifier)
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{
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VERIFY(!next_is('}'));
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if (!consume_specific('{'))
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return false;
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if (!consume_number(specifier.index))
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specifier.index = use_next_index;
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if (consume_specific(':')) {
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auto const begin = tell();
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size_t level = 1;
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while (level > 0) {
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VERIFY(!is_eof());
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if (consume_specific('{')) {
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++level;
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continue;
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}
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if (consume_specific('}')) {
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--level;
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continue;
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}
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consume();
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}
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specifier.flags = m_input.substring_view(begin, tell() - begin - 1);
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} else {
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if (!consume_specific('}'))
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VERIFY_NOT_REACHED();
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specifier.flags = ""sv;
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}
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return true;
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}
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bool FormatParser::consume_replacement_field(size_t& index)
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{
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if (!consume_specific('{'))
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return false;
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if (!consume_number(index))
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index = use_next_index;
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if (!consume_specific('}'))
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VERIFY_NOT_REACHED();
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return true;
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}
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ErrorOr<void> FormatBuilder::put_padding(char fill, size_t amount)
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{
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for (size_t i = 0; i < amount; ++i)
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TRY(m_builder.try_append(fill));
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return {};
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}
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ErrorOr<void> FormatBuilder::put_literal(StringView value)
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{
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for (size_t i = 0; i < value.length(); ++i) {
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TRY(m_builder.try_append(value[i]));
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if (value[i] == '{' || value[i] == '}')
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++i;
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}
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return {};
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}
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ErrorOr<void> FormatBuilder::put_string(
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StringView value,
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Align align,
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size_t min_width,
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size_t max_width,
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char fill)
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{
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auto const used_by_string = min(max_width, value.length());
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auto const used_by_padding = max(min_width, used_by_string) - used_by_string;
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if (used_by_string < value.length())
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value = value.substring_view(0, used_by_string);
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if (align == Align::Left || align == Align::Default) {
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TRY(m_builder.try_append(value));
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TRY(put_padding(fill, used_by_padding));
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} else if (align == Align::Center) {
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auto const used_by_left_padding = used_by_padding / 2;
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auto const used_by_right_padding = ceil_div<size_t, size_t>(used_by_padding, 2);
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TRY(put_padding(fill, used_by_left_padding));
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TRY(m_builder.try_append(value));
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TRY(put_padding(fill, used_by_right_padding));
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} else if (align == Align::Right) {
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TRY(put_padding(fill, used_by_padding));
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TRY(m_builder.try_append(value));
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}
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return {};
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}
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ErrorOr<void> FormatBuilder::put_u64(
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u64 value,
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u8 base,
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bool prefix,
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bool upper_case,
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bool zero_pad,
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bool use_separator,
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Align align,
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size_t min_width,
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char fill,
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SignMode sign_mode,
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bool is_negative)
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{
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if (align == Align::Default)
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align = Align::Right;
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Array<u8, 128> buffer;
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auto const used_by_digits = convert_unsigned_to_string(value, buffer, base, upper_case, use_separator);
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size_t used_by_prefix = 0;
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if (align == Align::Right && zero_pad) {
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// We want ByteString::formatted("{:#08x}", 32) to produce '0x00000020' instead of '0x000020'. This
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// behavior differs from both fmtlib and printf, but is more intuitive.
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used_by_prefix = 0;
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} else {
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if (is_negative || sign_mode != SignMode::OnlyIfNeeded)
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used_by_prefix += 1;
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if (prefix) {
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if (base == 8)
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used_by_prefix += 1;
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else if (base == 16)
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used_by_prefix += 2;
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else if (base == 2)
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used_by_prefix += 2;
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}
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}
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auto const used_by_field = used_by_prefix + used_by_digits;
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auto const used_by_padding = max(used_by_field, min_width) - used_by_field;
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auto const put_prefix = [&]() -> ErrorOr<void> {
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if (is_negative)
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TRY(m_builder.try_append('-'));
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else if (sign_mode == SignMode::Always)
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TRY(m_builder.try_append('+'));
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else if (sign_mode == SignMode::Reserved)
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TRY(m_builder.try_append(' '));
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if (prefix) {
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if (base == 2) {
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if (upper_case)
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TRY(m_builder.try_append("0B"sv));
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else
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TRY(m_builder.try_append("0b"sv));
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} else if (base == 8) {
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TRY(m_builder.try_append("0"sv));
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} else if (base == 16) {
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if (upper_case)
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TRY(m_builder.try_append("0X"sv));
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else
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TRY(m_builder.try_append("0x"sv));
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}
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}
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return {};
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};
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auto const put_digits = [&]() -> ErrorOr<void> {
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for (size_t i = 0; i < used_by_digits; ++i)
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TRY(m_builder.try_append(buffer[i]));
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return {};
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};
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if (align == Align::Left) {
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auto const used_by_right_padding = used_by_padding;
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TRY(put_prefix());
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TRY(put_digits());
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TRY(put_padding(fill, used_by_right_padding));
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} else if (align == Align::Center) {
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auto const used_by_left_padding = used_by_padding / 2;
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auto const used_by_right_padding = ceil_div<size_t, size_t>(used_by_padding, 2);
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TRY(put_padding(fill, used_by_left_padding));
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TRY(put_prefix());
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TRY(put_digits());
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TRY(put_padding(fill, used_by_right_padding));
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} else if (align == Align::Right) {
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auto const used_by_left_padding = used_by_padding;
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if (zero_pad) {
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TRY(put_prefix());
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TRY(put_padding('0', used_by_left_padding));
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TRY(put_digits());
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} else {
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TRY(put_padding(fill, used_by_left_padding));
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TRY(put_prefix());
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TRY(put_digits());
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}
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}
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return {};
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}
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ErrorOr<void> FormatBuilder::put_i64(
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i64 value,
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u8 base,
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bool prefix,
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bool upper_case,
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bool zero_pad,
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bool use_separator,
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Align align,
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size_t min_width,
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char fill,
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SignMode sign_mode)
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{
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auto const is_negative = value < 0;
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u64 positive_value;
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if (value == NumericLimits<i64>::min()) {
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positive_value = static_cast<u64>(NumericLimits<i64>::max()) + 1;
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} else {
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positive_value = is_negative ? -value : value;
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}
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TRY(put_u64(positive_value, base, prefix, upper_case, zero_pad, use_separator, align, min_width, fill, sign_mode, is_negative));
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return {};
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}
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ErrorOr<void> FormatBuilder::put_fixed_point(
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bool is_negative,
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i64 integer_value,
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u64 fraction_value,
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u64 fraction_one,
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size_t precision,
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u8 base,
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bool upper_case,
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bool zero_pad,
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bool use_separator,
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Align align,
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size_t min_width,
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size_t fraction_max_width,
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char fill,
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SignMode sign_mode)
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{
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StringBuilder string_builder;
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FormatBuilder format_builder { string_builder };
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if (is_negative)
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integer_value = -integer_value;
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TRY(format_builder.put_u64(static_cast<u64>(integer_value), base, false, upper_case, false, use_separator, Align::Right, 0, ' ', sign_mode, is_negative));
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if (fraction_max_width && (zero_pad || fraction_value)) {
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// FIXME: This is a terrible approximation but doing it properly would be a lot of work. If someone is up for that, a good
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// place to start would be the following video from CppCon 2019:
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// https://youtu.be/4P_kbF0EbZM (Stephan T. Lavavej “Floating-Point <charconv>: Making Your Code 10x Faster With C++17's Final Boss”)
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if (is_negative && fraction_value)
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fraction_value = fraction_one - fraction_value;
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TRY(string_builder.try_append('.'));
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if (base == 10) {
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u64 scale = pow<u64>(5, precision);
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// FIXME: overflows (not before: fraction_value = (2^precision - 1) and precision >= 20) (use wider integer type)
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auto fraction = scale * fraction_value;
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TRY(format_builder.put_u64(fraction, base, false, upper_case, true, use_separator, Align::Right, precision));
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} else if (base == 16 || base == 8 || base == 2) {
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auto bits_per_character = log2(base);
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auto fraction = fraction_value << ((bits_per_character - (precision % bits_per_character)) % bits_per_character);
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TRY(format_builder.put_u64(fraction, base, false, upper_case, false, use_separator, Align::Right, precision / bits_per_character + (precision % bits_per_character != 0), '0'));
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} else {
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VERIFY_NOT_REACHED();
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}
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}
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auto formatted_string = string_builder.string_view();
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if (fraction_max_width && (zero_pad || fraction_value)) {
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auto point_index = formatted_string.find('.').value_or(0);
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if (!point_index)
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VERIFY_NOT_REACHED();
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if (auto formatted_length = (formatted_string.length() - point_index - 1); formatted_length > fraction_max_width) {
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formatted_string = formatted_string.substring_view(0, 1 + point_index + fraction_max_width);
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} else {
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string_builder.append_repeated('0', fraction_max_width - formatted_length);
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formatted_string = string_builder.string_view();
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}
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if (!zero_pad)
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formatted_string = formatted_string.trim("0"sv, TrimMode::Right);
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if (formatted_string.ends_with('.'))
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formatted_string = formatted_string.trim("."sv, TrimMode::Right);
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}
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TRY(put_string(formatted_string, align, min_width, NumericLimits<size_t>::max(), fill));
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return {};
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}
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static ErrorOr<void> round_up_digits(StringBuilder& digits_builder)
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{
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auto digits_buffer = TRY(digits_builder.to_byte_buffer());
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int current_position = digits_buffer.size() - 1;
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while (current_position >= 0) {
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if (digits_buffer[current_position] == '.') {
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--current_position;
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continue;
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}
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++digits_buffer[current_position];
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if (digits_buffer[current_position] <= '9')
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break;
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digits_buffer[current_position] = '0';
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--current_position;
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}
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digits_builder.clear();
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if (current_position < 0)
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TRY(digits_builder.try_append('1'));
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return digits_builder.try_append(digits_buffer);
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}
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ErrorOr<void> FormatBuilder::put_f64_with_precision(
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double value,
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u8 base,
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bool upper_case,
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bool zero_pad,
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bool use_separator,
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Align align,
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size_t min_width,
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size_t precision,
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char fill,
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SignMode sign_mode,
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RealNumberDisplayMode display_mode)
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{
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StringBuilder string_builder;
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FormatBuilder format_builder { string_builder };
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if (isnan(value) || isinf(value)) [[unlikely]] {
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if (value < 0.0)
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TRY(string_builder.try_append('-'));
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else if (sign_mode == SignMode::Always)
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TRY(string_builder.try_append('+'));
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else if (sign_mode == SignMode::Reserved)
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TRY(string_builder.try_append(' '));
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if (isnan(value))
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TRY(string_builder.try_append(upper_case ? "NAN"sv : "nan"sv));
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else
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TRY(string_builder.try_append(upper_case ? "INF"sv : "inf"sv));
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TRY(put_string(string_builder.string_view(), align, min_width, NumericLimits<size_t>::max(), fill));
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return {};
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}
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bool is_negative = value < 0.0;
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if (is_negative)
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value = -value;
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TRY(format_builder.put_u64(static_cast<u64>(value), base, false, upper_case, false, use_separator, Align::Right, 0, ' ', sign_mode, is_negative));
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value -= static_cast<i64>(value);
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|
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if (precision > 0) {
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// FIXME: This is a terrible approximation but doing it properly would be a lot of work. If someone is up for that, a good
|
|
// place to start would be the following video from CppCon 2019:
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// https://youtu.be/4P_kbF0EbZM (Stephan T. Lavavej “Floating-Point <charconv>: Making Your Code 10x Faster With C++17's Final Boss”)
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double epsilon = 0.5;
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if (!zero_pad && display_mode != RealNumberDisplayMode::FixedPoint) {
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for (size_t i = 0; i < precision; ++i)
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epsilon /= 10.0;
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}
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|
|
for (size_t digit = 0; digit < precision; ++digit) {
|
|
if (!zero_pad && display_mode != RealNumberDisplayMode::FixedPoint && value - static_cast<i64>(value) < epsilon)
|
|
break;
|
|
|
|
value *= 10.0;
|
|
epsilon *= 10.0;
|
|
|
|
if (value > NumericLimits<u32>::max())
|
|
value -= static_cast<u64>(value) - (static_cast<u64>(value) % 10);
|
|
|
|
if (digit == 0)
|
|
TRY(string_builder.try_append('.'));
|
|
|
|
TRY(string_builder.try_append('0' + (static_cast<u32>(value) % 10)));
|
|
}
|
|
}
|
|
|
|
// Round up if the following decimal is 5 or higher
|
|
if (static_cast<u64>(value * 10.0) % 10 >= 5)
|
|
TRY(round_up_digits(string_builder));
|
|
|
|
return put_string(string_builder.string_view(), align, min_width, NumericLimits<size_t>::max(), fill);
|
|
}
|
|
|
|
template<OneOf<f32, f64> T>
|
|
ErrorOr<void> FormatBuilder::put_f32_or_f64(
|
|
T value,
|
|
u8 base,
|
|
bool upper_case,
|
|
bool zero_pad,
|
|
bool use_separator,
|
|
Align align,
|
|
size_t min_width,
|
|
Optional<size_t> precision,
|
|
char fill,
|
|
SignMode sign_mode,
|
|
RealNumberDisplayMode display_mode)
|
|
{
|
|
if (precision.has_value() || base != 10)
|
|
return put_f64_with_precision(value, base, upper_case, zero_pad, use_separator, align, min_width, precision.value_or(6), fill, sign_mode, display_mode);
|
|
|
|
// No precision specified, so pick the best precision with roundtrip guarantees.
|
|
StringBuilder builder;
|
|
|
|
// Special cases: NaN, inf, -inf, 0 and -0.
|
|
auto const is_nan = isnan(value);
|
|
auto const is_inf = isinf(value);
|
|
auto const is_zero = value == static_cast<T>(0.0) || value == static_cast<T>(-0.0);
|
|
if (is_nan || is_inf || is_zero) {
|
|
if (value < 0)
|
|
TRY(builder.try_append('-'));
|
|
else if (sign_mode == SignMode::Always)
|
|
TRY(builder.try_append('+'));
|
|
else if (sign_mode == SignMode::Reserved)
|
|
TRY(builder.try_append(' '));
|
|
|
|
if (is_nan)
|
|
TRY(builder.try_append(upper_case ? "NAN"sv : "nan"sv));
|
|
else if (is_inf)
|
|
TRY(builder.try_append(upper_case ? "INF"sv : "inf"sv));
|
|
else
|
|
TRY(builder.try_append('0'));
|
|
|
|
return put_string(builder.string_view(), align, min_width, NumericLimits<size_t>::max(), fill);
|
|
}
|
|
|
|
auto const [sign, mantissa, exponent] = convert_floating_point_to_decimal_exponential_form(value);
|
|
|
|
auto convert_to_decimal_digits_array = [](auto x, auto& digits) -> size_t {
|
|
size_t length = 0;
|
|
for (; x; x /= 10)
|
|
digits[length++] = x % 10 | '0';
|
|
for (size_t i = 0; 2 * i + 1 < length; ++i)
|
|
swap(digits[i], digits[length - i - 1]);
|
|
return length;
|
|
};
|
|
|
|
Array<u8, 20> mantissa_digits;
|
|
auto mantissa_length = convert_to_decimal_digits_array(mantissa, mantissa_digits);
|
|
|
|
if (sign)
|
|
TRY(builder.try_append('-'));
|
|
else if (sign_mode == SignMode::Always)
|
|
TRY(builder.try_append('+'));
|
|
else if (sign_mode == SignMode::Reserved)
|
|
TRY(builder.try_append(' '));
|
|
|
|
auto const n = exponent + static_cast<i32>(mantissa_length);
|
|
auto const mantissa_text = StringView { mantissa_digits.span().slice(0, mantissa_length) };
|
|
size_t integral_part_end = 0;
|
|
// NOTE: Range from ECMA262, seems like an okay default.
|
|
if (n >= -5 && n <= 21) {
|
|
if (exponent >= 0) {
|
|
TRY(builder.try_append(mantissa_text));
|
|
TRY(builder.try_append_repeated('0', exponent));
|
|
integral_part_end = builder.length();
|
|
} else if (n > 0) {
|
|
TRY(builder.try_append(mantissa_text.substring_view(0, n)));
|
|
integral_part_end = builder.length();
|
|
TRY(builder.try_append('.'));
|
|
TRY(builder.try_append(mantissa_text.substring_view(n)));
|
|
} else {
|
|
TRY(builder.try_append("0."sv));
|
|
TRY(builder.try_append_repeated('0', -n));
|
|
TRY(builder.try_append(mantissa_text));
|
|
integral_part_end = 1;
|
|
}
|
|
} else {
|
|
auto const exponent_sign = n < 0 ? '-' : '+';
|
|
Array<u8, 5> exponent_digits;
|
|
auto const exponent_length = convert_to_decimal_digits_array(abs(n - 1), exponent_digits);
|
|
auto const exponent_text = StringView { exponent_digits.span().slice(0, exponent_length) };
|
|
integral_part_end = 1;
|
|
|
|
if (mantissa_length == 1) {
|
|
// <mantissa>e<exponent>
|
|
TRY(builder.try_append(mantissa_text));
|
|
TRY(builder.try_append('e'));
|
|
TRY(builder.try_append(exponent_sign));
|
|
TRY(builder.try_append(exponent_text));
|
|
} else {
|
|
// <mantissa>.<mantissa[1..]>e<exponent>
|
|
TRY(builder.try_append(mantissa_text.substring_view(0, 1)));
|
|
TRY(builder.try_append('.'));
|
|
TRY(builder.try_append(mantissa_text.substring_view(1)));
|
|
TRY(builder.try_append('e'));
|
|
TRY(builder.try_append(exponent_sign));
|
|
TRY(builder.try_append(exponent_text));
|
|
}
|
|
}
|
|
|
|
if (use_separator && integral_part_end > 3) {
|
|
// Go backwards from the end of the integral part, inserting commas every 3 consecutive digits.
|
|
StringBuilder separated_builder;
|
|
auto const string_view = builder.string_view();
|
|
for (size_t i = 0; i < integral_part_end; ++i) {
|
|
auto const index_from_end = integral_part_end - i - 1;
|
|
if (index_from_end > 0 && index_from_end != integral_part_end - 1 && index_from_end % 3 == 2)
|
|
TRY(separated_builder.try_append(','));
|
|
TRY(separated_builder.try_append(string_view[i]));
|
|
}
|
|
TRY(separated_builder.try_append(string_view.substring_view(integral_part_end)));
|
|
builder = move(separated_builder);
|
|
}
|
|
|
|
return put_string(builder.string_view(), align, min_width, NumericLimits<size_t>::max(), fill);
|
|
}
|
|
|
|
ErrorOr<void> FormatBuilder::put_f80(
|
|
long double value,
|
|
u8 base,
|
|
bool upper_case,
|
|
bool use_separator,
|
|
Align align,
|
|
size_t min_width,
|
|
size_t precision,
|
|
char fill,
|
|
SignMode sign_mode,
|
|
RealNumberDisplayMode display_mode)
|
|
{
|
|
StringBuilder string_builder;
|
|
FormatBuilder format_builder { string_builder };
|
|
|
|
if (isnan(value) || isinf(value)) [[unlikely]] {
|
|
if (value < 0.0l)
|
|
TRY(string_builder.try_append('-'));
|
|
else if (sign_mode == SignMode::Always)
|
|
TRY(string_builder.try_append('+'));
|
|
else if (sign_mode == SignMode::Reserved)
|
|
TRY(string_builder.try_append(' '));
|
|
|
|
if (isnan(value))
|
|
TRY(string_builder.try_append(upper_case ? "NAN"sv : "nan"sv));
|
|
else
|
|
TRY(string_builder.try_append(upper_case ? "INF"sv : "inf"sv));
|
|
TRY(put_string(string_builder.string_view(), align, min_width, NumericLimits<size_t>::max(), fill));
|
|
return {};
|
|
}
|
|
|
|
bool is_negative = value < 0.0l;
|
|
if (is_negative)
|
|
value = -value;
|
|
|
|
TRY(format_builder.put_u64(static_cast<u64>(value), base, false, upper_case, false, use_separator, Align::Right, 0, ' ', sign_mode, is_negative));
|
|
value -= static_cast<i64>(value);
|
|
|
|
if (precision > 0) {
|
|
// FIXME: This is a terrible approximation but doing it properly would be a lot of work. If someone is up for that, a good
|
|
// place to start would be the following video from CppCon 2019:
|
|
// https://youtu.be/4P_kbF0EbZM (Stephan T. Lavavej “Floating-Point <charconv>: Making Your Code 10x Faster With C++17's Final Boss”)
|
|
long double epsilon = 0.5l;
|
|
if (display_mode != RealNumberDisplayMode::FixedPoint) {
|
|
for (size_t i = 0; i < precision; ++i)
|
|
epsilon /= 10.0l;
|
|
}
|
|
|
|
for (size_t digit = 0; digit < precision; ++digit) {
|
|
if (display_mode != RealNumberDisplayMode::FixedPoint && value - static_cast<i64>(value) < epsilon)
|
|
break;
|
|
|
|
value *= 10.0l;
|
|
epsilon *= 10.0l;
|
|
|
|
if (value > NumericLimits<u32>::max())
|
|
value -= static_cast<u64>(value) - (static_cast<u64>(value) % 10);
|
|
|
|
if (digit == 0)
|
|
TRY(string_builder.try_append('.'));
|
|
|
|
TRY(string_builder.try_append('0' + (static_cast<u32>(value) % 10)));
|
|
}
|
|
}
|
|
|
|
// Round up if the following decimal is 5 or higher
|
|
if (static_cast<u64>(value * 10.0l) % 10 >= 5)
|
|
TRY(round_up_digits(string_builder));
|
|
|
|
TRY(put_string(string_builder.string_view(), align, min_width, NumericLimits<size_t>::max(), fill));
|
|
return {};
|
|
}
|
|
|
|
ErrorOr<void> FormatBuilder::put_hexdump(ReadonlyBytes bytes, size_t width, char fill)
|
|
{
|
|
auto put_char_view = [&](auto i) -> ErrorOr<void> {
|
|
TRY(put_padding(fill, 4));
|
|
for (size_t j = i - min(i, width); j < i; ++j) {
|
|
auto ch = bytes[j];
|
|
TRY(m_builder.try_append(ch >= 32 && ch <= 127 ? ch : '.')); // silly hack
|
|
}
|
|
return {};
|
|
};
|
|
|
|
for (size_t i = 0; i < bytes.size(); ++i) {
|
|
if (width > 0) {
|
|
if (i % width == 0 && i) {
|
|
TRY(put_char_view(i));
|
|
TRY(put_literal("\n"sv));
|
|
}
|
|
}
|
|
TRY(put_u64(bytes[i], 16, false, false, true, false, Align::Right, 2));
|
|
}
|
|
|
|
if (width > 0)
|
|
TRY(put_char_view(bytes.size()));
|
|
|
|
return {};
|
|
}
|
|
|
|
ErrorOr<void> vformat(StringBuilder& builder, StringView fmtstr, TypeErasedFormatParams& params)
|
|
{
|
|
FormatBuilder fmtbuilder { builder };
|
|
FormatParser parser { fmtstr };
|
|
|
|
TRY(vformat_impl(params, fmtbuilder, parser));
|
|
return {};
|
|
}
|
|
|
|
void StandardFormatter::parse(TypeErasedFormatParams& params, FormatParser& parser)
|
|
{
|
|
if ("<^>"sv.contains(parser.peek(1))) {
|
|
VERIFY(!parser.next_is(is_any_of("{}"sv)));
|
|
m_fill = parser.consume();
|
|
}
|
|
|
|
if (parser.consume_specific('<'))
|
|
m_align = FormatBuilder::Align::Left;
|
|
else if (parser.consume_specific('^'))
|
|
m_align = FormatBuilder::Align::Center;
|
|
else if (parser.consume_specific('>'))
|
|
m_align = FormatBuilder::Align::Right;
|
|
|
|
if (parser.consume_specific('-'))
|
|
m_sign_mode = FormatBuilder::SignMode::OnlyIfNeeded;
|
|
else if (parser.consume_specific('+'))
|
|
m_sign_mode = FormatBuilder::SignMode::Always;
|
|
else if (parser.consume_specific(' '))
|
|
m_sign_mode = FormatBuilder::SignMode::Reserved;
|
|
|
|
if (parser.consume_specific('#'))
|
|
m_alternative_form = true;
|
|
|
|
if (parser.consume_specific('\''))
|
|
m_use_separator = true;
|
|
|
|
if (parser.consume_specific('0'))
|
|
m_zero_pad = true;
|
|
|
|
if (size_t index = 0; parser.consume_replacement_field(index)) {
|
|
if (index == use_next_index)
|
|
index = params.take_next_index();
|
|
|
|
m_width = params.parameters().at(index).to_size();
|
|
} else if (size_t width = 0; parser.consume_number(width)) {
|
|
m_width = width;
|
|
}
|
|
|
|
if (parser.consume_specific('.')) {
|
|
if (size_t index = 0; parser.consume_replacement_field(index)) {
|
|
if (index == use_next_index)
|
|
index = params.take_next_index();
|
|
|
|
m_precision = params.parameters().at(index).to_size();
|
|
} else if (size_t precision = 0; parser.consume_number(precision)) {
|
|
m_precision = precision;
|
|
}
|
|
}
|
|
|
|
if (parser.consume_specific('b'))
|
|
m_mode = Mode::Binary;
|
|
else if (parser.consume_specific('B'))
|
|
m_mode = Mode::BinaryUppercase;
|
|
else if (parser.consume_specific('d'))
|
|
m_mode = Mode::Decimal;
|
|
else if (parser.consume_specific('o'))
|
|
m_mode = Mode::Octal;
|
|
else if (parser.consume_specific('x'))
|
|
m_mode = Mode::Hexadecimal;
|
|
else if (parser.consume_specific('X'))
|
|
m_mode = Mode::HexadecimalUppercase;
|
|
else if (parser.consume_specific('c'))
|
|
m_mode = Mode::Character;
|
|
else if (parser.consume_specific('s'))
|
|
m_mode = Mode::String;
|
|
else if (parser.consume_specific('p'))
|
|
m_mode = Mode::Pointer;
|
|
else if (parser.consume_specific('f'))
|
|
m_mode = Mode::FixedPoint;
|
|
else if (parser.consume_specific('a'))
|
|
m_mode = Mode::Hexfloat;
|
|
else if (parser.consume_specific('A'))
|
|
m_mode = Mode::HexfloatUppercase;
|
|
else if (parser.consume_specific("hex-dump"sv))
|
|
m_mode = Mode::HexDump;
|
|
|
|
if (!parser.is_eof())
|
|
dbgln("{} did not consume '{}'", __PRETTY_FUNCTION__, parser.remaining());
|
|
|
|
VERIFY(parser.is_eof());
|
|
}
|
|
|
|
ErrorOr<void> Formatter<StringView>::format(FormatBuilder& builder, StringView value)
|
|
{
|
|
if (m_sign_mode != FormatBuilder::SignMode::Default)
|
|
VERIFY_NOT_REACHED();
|
|
if (m_zero_pad)
|
|
VERIFY_NOT_REACHED();
|
|
if (m_mode != Mode::Default && m_mode != Mode::String && m_mode != Mode::Character && m_mode != Mode::HexDump)
|
|
VERIFY_NOT_REACHED();
|
|
|
|
m_width = m_width.value_or(0);
|
|
m_precision = m_precision.value_or(NumericLimits<size_t>::max());
|
|
|
|
if (m_mode == Mode::HexDump)
|
|
return builder.put_hexdump(value.bytes(), m_width.value(), m_fill);
|
|
return builder.put_string(value, m_align, m_width.value(), m_precision.value(), m_fill);
|
|
}
|
|
|
|
ErrorOr<void> Formatter<FormatString>::vformat(FormatBuilder& builder, StringView fmtstr, TypeErasedFormatParams& params)
|
|
{
|
|
StringBuilder string_builder;
|
|
TRY(AK::vformat(string_builder, fmtstr, params));
|
|
TRY(Formatter<StringView>::format(builder, string_builder.string_view()));
|
|
return {};
|
|
}
|
|
|
|
template<Integral T>
|
|
ErrorOr<void> Formatter<T>::format(FormatBuilder& builder, T value)
|
|
{
|
|
if (m_mode == Mode::Character) {
|
|
// FIXME: We just support ASCII for now, in the future maybe unicode?
|
|
// VERIFY(value >= 0 && value <= 127);
|
|
|
|
m_mode = Mode::String;
|
|
|
|
Formatter<StringView> formatter { *this };
|
|
return formatter.format(builder, StringView { reinterpret_cast<char const*>(&value), 1 });
|
|
}
|
|
|
|
if (m_precision.has_value())
|
|
VERIFY_NOT_REACHED();
|
|
|
|
if (m_mode == Mode::Pointer) {
|
|
if (m_sign_mode != FormatBuilder::SignMode::Default)
|
|
VERIFY_NOT_REACHED();
|
|
if (m_align != FormatBuilder::Align::Default)
|
|
VERIFY_NOT_REACHED();
|
|
if (m_alternative_form)
|
|
VERIFY_NOT_REACHED();
|
|
if (m_width.has_value())
|
|
VERIFY_NOT_REACHED();
|
|
|
|
m_mode = Mode::Hexadecimal;
|
|
m_alternative_form = true;
|
|
m_width = 2 * sizeof(void*);
|
|
m_zero_pad = true;
|
|
}
|
|
|
|
u8 base = 0;
|
|
bool upper_case = false;
|
|
if (m_mode == Mode::Binary) {
|
|
base = 2;
|
|
} else if (m_mode == Mode::BinaryUppercase) {
|
|
base = 2;
|
|
upper_case = true;
|
|
} else if (m_mode == Mode::Octal) {
|
|
base = 8;
|
|
} else if (m_mode == Mode::Decimal || m_mode == Mode::Default) {
|
|
base = 10;
|
|
} else if (m_mode == Mode::Hexadecimal) {
|
|
base = 16;
|
|
} else if (m_mode == Mode::HexadecimalUppercase) {
|
|
base = 16;
|
|
upper_case = true;
|
|
} else if (m_mode == Mode::HexDump) {
|
|
m_width = m_width.value_or(32);
|
|
return builder.put_hexdump({ &value, sizeof(value) }, m_width.value(), m_fill);
|
|
} else {
|
|
VERIFY_NOT_REACHED();
|
|
}
|
|
|
|
m_width = m_width.value_or(0);
|
|
|
|
if constexpr (IsSame<MakeUnsigned<T>, T>)
|
|
return builder.put_u64(value, base, m_alternative_form, upper_case, m_zero_pad, m_use_separator, m_align, m_width.value(), m_fill, m_sign_mode);
|
|
else
|
|
return builder.put_i64(value, base, m_alternative_form, upper_case, m_zero_pad, m_use_separator, m_align, m_width.value(), m_fill, m_sign_mode);
|
|
}
|
|
|
|
ErrorOr<void> Formatter<char>::format(FormatBuilder& builder, char value)
|
|
{
|
|
if (m_mode == Mode::Binary || m_mode == Mode::BinaryUppercase || m_mode == Mode::Decimal || m_mode == Mode::Octal || m_mode == Mode::Hexadecimal || m_mode == Mode::HexadecimalUppercase) {
|
|
// Trick: signed char != char. (Sometimes weird features are actually helpful.)
|
|
Formatter<signed char> formatter { *this };
|
|
return formatter.format(builder, static_cast<signed char>(value));
|
|
} else {
|
|
Formatter<StringView> formatter { *this };
|
|
return formatter.format(builder, { &value, 1 });
|
|
}
|
|
}
|
|
ErrorOr<void> Formatter<wchar_t>::format(FormatBuilder& builder, wchar_t value)
|
|
{
|
|
if (m_mode == Mode::Binary || m_mode == Mode::BinaryUppercase || m_mode == Mode::Decimal || m_mode == Mode::Octal || m_mode == Mode::Hexadecimal || m_mode == Mode::HexadecimalUppercase) {
|
|
Formatter<u32> formatter { *this };
|
|
return formatter.format(builder, static_cast<u32>(value));
|
|
} else {
|
|
StringBuilder codepoint;
|
|
codepoint.append_code_point(value);
|
|
|
|
Formatter<StringView> formatter { *this };
|
|
return formatter.format(builder, codepoint.string_view());
|
|
}
|
|
}
|
|
ErrorOr<void> Formatter<bool>::format(FormatBuilder& builder, bool value)
|
|
{
|
|
if (m_mode == Mode::Binary || m_mode == Mode::BinaryUppercase || m_mode == Mode::Decimal || m_mode == Mode::Octal || m_mode == Mode::Hexadecimal || m_mode == Mode::HexadecimalUppercase) {
|
|
Formatter<u8> formatter { *this };
|
|
return formatter.format(builder, static_cast<u8>(value));
|
|
} else if (m_mode == Mode::HexDump) {
|
|
return builder.put_hexdump({ &value, sizeof(value) }, m_width.value_or(32), m_fill);
|
|
} else {
|
|
Formatter<StringView> formatter { *this };
|
|
return formatter.format(builder, value ? "true"sv : "false"sv);
|
|
}
|
|
}
|
|
ErrorOr<void> Formatter<long double>::format(FormatBuilder& builder, long double value)
|
|
{
|
|
u8 base;
|
|
bool upper_case;
|
|
FormatBuilder::RealNumberDisplayMode real_number_display_mode = FormatBuilder::RealNumberDisplayMode::General;
|
|
if (m_mode == Mode::Default || m_mode == Mode::FixedPoint) {
|
|
base = 10;
|
|
upper_case = false;
|
|
if (m_mode == Mode::FixedPoint)
|
|
real_number_display_mode = FormatBuilder::RealNumberDisplayMode::FixedPoint;
|
|
} else if (m_mode == Mode::Hexfloat) {
|
|
base = 16;
|
|
upper_case = false;
|
|
} else if (m_mode == Mode::HexfloatUppercase) {
|
|
base = 16;
|
|
upper_case = true;
|
|
} else {
|
|
VERIFY_NOT_REACHED();
|
|
}
|
|
|
|
m_width = m_width.value_or(0);
|
|
m_precision = m_precision.value_or(6);
|
|
|
|
return builder.put_f80(value, base, upper_case, m_use_separator, m_align, m_width.value(), m_precision.value(), m_fill, m_sign_mode, real_number_display_mode);
|
|
}
|
|
|
|
ErrorOr<void> Formatter<double>::format(FormatBuilder& builder, double value)
|
|
{
|
|
u8 base;
|
|
bool upper_case;
|
|
FormatBuilder::RealNumberDisplayMode real_number_display_mode = FormatBuilder::RealNumberDisplayMode::General;
|
|
if (m_mode == Mode::Default || m_mode == Mode::FixedPoint) {
|
|
base = 10;
|
|
upper_case = false;
|
|
if (m_mode == Mode::FixedPoint)
|
|
real_number_display_mode = FormatBuilder::RealNumberDisplayMode::FixedPoint;
|
|
} else if (m_mode == Mode::Hexfloat) {
|
|
base = 16;
|
|
upper_case = false;
|
|
} else if (m_mode == Mode::HexfloatUppercase) {
|
|
base = 16;
|
|
upper_case = true;
|
|
} else {
|
|
VERIFY_NOT_REACHED();
|
|
}
|
|
|
|
m_width = m_width.value_or(0);
|
|
|
|
return builder.put_f32_or_f64(value, base, upper_case, m_zero_pad, m_use_separator, m_align, m_width.value(), m_precision, m_fill, m_sign_mode, real_number_display_mode);
|
|
}
|
|
|
|
ErrorOr<void> Formatter<float>::format(FormatBuilder& builder, float value)
|
|
{
|
|
u8 base;
|
|
bool upper_case;
|
|
FormatBuilder::RealNumberDisplayMode real_number_display_mode = FormatBuilder::RealNumberDisplayMode::General;
|
|
if (m_mode == Mode::Default || m_mode == Mode::FixedPoint) {
|
|
base = 10;
|
|
upper_case = false;
|
|
if (m_mode == Mode::FixedPoint)
|
|
real_number_display_mode = FormatBuilder::RealNumberDisplayMode::FixedPoint;
|
|
} else if (m_mode == Mode::Hexfloat) {
|
|
base = 16;
|
|
upper_case = false;
|
|
} else if (m_mode == Mode::HexfloatUppercase) {
|
|
base = 16;
|
|
upper_case = true;
|
|
} else {
|
|
VERIFY_NOT_REACHED();
|
|
}
|
|
|
|
m_width = m_width.value_or(0);
|
|
|
|
return builder.put_f32_or_f64(value, base, upper_case, m_zero_pad, m_use_separator, m_align, m_width.value(), m_precision, m_fill, m_sign_mode, real_number_display_mode);
|
|
}
|
|
|
|
template ErrorOr<void> FormatBuilder::put_f32_or_f64<float>(float, u8, bool, bool, bool, Align, size_t, Optional<size_t>, char, SignMode, RealNumberDisplayMode);
|
|
template ErrorOr<void> FormatBuilder::put_f32_or_f64<double>(double, u8, bool, bool, bool, Align, size_t, Optional<size_t>, char, SignMode, RealNumberDisplayMode);
|
|
|
|
void vout(FILE* file, StringView fmtstr, TypeErasedFormatParams& params, bool newline)
|
|
{
|
|
StringBuilder builder;
|
|
MUST(vformat(builder, fmtstr, params));
|
|
|
|
if (newline)
|
|
builder.append('\n');
|
|
|
|
auto const string = builder.string_view();
|
|
auto const retval = ::fwrite(string.characters_without_null_termination(), 1, string.length(), file);
|
|
if (static_cast<size_t>(retval) != string.length()) {
|
|
auto error = ferror(file);
|
|
dbgln("vout() failed ({} written out of {}), error was {} ({})", retval, string.length(), error, strerror(error));
|
|
}
|
|
}
|
|
|
|
#ifdef AK_OS_ANDROID
|
|
static char const* s_log_tag_name = "Serenity";
|
|
void set_log_tag_name(char const* tag_name)
|
|
{
|
|
static String s_log_tag_storage;
|
|
// NOTE: Make sure to copy the null terminator
|
|
s_log_tag_storage = MUST(String::from_utf8({ tag_name, strlen(tag_name) + 1 }));
|
|
s_log_tag_name = s_log_tag_storage.bytes_as_string_view().characters_without_null_termination();
|
|
}
|
|
|
|
void vout(LogLevel log_level, StringView fmtstr, TypeErasedFormatParams& params, bool newline)
|
|
{
|
|
StringBuilder builder;
|
|
MUST(vformat(builder, fmtstr, params));
|
|
|
|
if (newline)
|
|
builder.append('\n');
|
|
builder.append('\0');
|
|
|
|
auto const string = builder.string_view();
|
|
|
|
auto ndk_log_level = ANDROID_LOG_UNKNOWN;
|
|
switch (log_level) {
|
|
case LogLevel ::Debug:
|
|
ndk_log_level = ANDROID_LOG_DEBUG;
|
|
break;
|
|
case LogLevel ::Info:
|
|
ndk_log_level = ANDROID_LOG_INFO;
|
|
break;
|
|
case LogLevel::Warning:
|
|
ndk_log_level = ANDROID_LOG_WARN;
|
|
break;
|
|
}
|
|
|
|
__android_log_write(ndk_log_level, s_log_tag_name, string.characters_without_null_termination());
|
|
}
|
|
|
|
#endif
|
|
|
|
// FIXME: Deduplicate with Core::Process:get_name()
|
|
[[gnu::used]] static ByteString process_name_helper()
|
|
{
|
|
#if defined(AK_OS_SERENITY)
|
|
char buffer[BUFSIZ] = {};
|
|
int rc = get_process_name(buffer, BUFSIZ);
|
|
if (rc != 0)
|
|
return ByteString {};
|
|
return StringView { buffer, strlen(buffer) };
|
|
#elif defined(AK_LIBC_GLIBC) || (defined(AK_OS_LINUX) && !defined(AK_OS_ANDROID))
|
|
return StringView { program_invocation_name, strlen(program_invocation_name) };
|
|
#elif defined(AK_OS_BSD_GENERIC) || defined(AK_OS_HAIKU)
|
|
auto const* progname = getprogname();
|
|
return StringView { progname, strlen(progname) };
|
|
#else
|
|
// FIXME: Implement process_name_helper() for other platforms.
|
|
return StringView {};
|
|
#endif
|
|
}
|
|
|
|
static StringView process_name_for_logging()
|
|
{
|
|
// NOTE: We use AK::Format in the DynamicLoader and LibC, which cannot use thread-safe statics
|
|
// Also go to extraordinary lengths here to avoid strlen() on the process name every call to dbgln
|
|
static char process_name_buf[256] = {};
|
|
static StringView process_name;
|
|
static bool process_name_retrieved = false;
|
|
if (!process_name_retrieved) {
|
|
auto path = LexicalPath(process_name_helper());
|
|
process_name_retrieved = true;
|
|
(void)path.basename().copy_characters_to_buffer(process_name_buf, sizeof(process_name_buf));
|
|
process_name = { process_name_buf, strlen(process_name_buf) };
|
|
}
|
|
return process_name;
|
|
}
|
|
|
|
static bool is_debug_enabled = true;
|
|
|
|
void set_debug_enabled(bool value)
|
|
{
|
|
is_debug_enabled = value;
|
|
}
|
|
|
|
// On Serenity, dbgln goes to a non-stderr output
|
|
static bool is_rich_debug_enabled =
|
|
#if defined(AK_OS_SERENITY)
|
|
true;
|
|
#else
|
|
false;
|
|
#endif
|
|
|
|
void set_rich_debug_enabled(bool value)
|
|
{
|
|
is_rich_debug_enabled = value;
|
|
}
|
|
|
|
void vdbg(StringView fmtstr, TypeErasedFormatParams& params, bool newline)
|
|
{
|
|
if (!is_debug_enabled)
|
|
return;
|
|
|
|
StringBuilder builder;
|
|
|
|
if (is_rich_debug_enabled) {
|
|
#ifndef AK_OS_WINDOWS
|
|
auto process_name = process_name_for_logging();
|
|
if (!process_name.is_empty()) {
|
|
struct timespec ts = {};
|
|
clock_gettime(CLOCK_MONOTONIC_COARSE, &ts);
|
|
auto pid = getpid();
|
|
# if defined(AK_OS_SERENITY) || defined(AK_OS_LINUX)
|
|
// Linux and Serenity handle thread IDs as if they are related to process ids
|
|
auto tid = gettid();
|
|
if (pid == tid)
|
|
# endif
|
|
{
|
|
builder.appendff("{}.{:03} \033[33;1m{}({})\033[0m: ", ts.tv_sec, ts.tv_nsec / 1000000, process_name, pid);
|
|
}
|
|
# if defined(AK_OS_SERENITY) || defined(AK_OS_LINUX)
|
|
else {
|
|
builder.appendff("{}.{:03} \033[33;1m{}({}:{})\033[0m: ", ts.tv_sec, ts.tv_nsec / 1000000, process_name, pid, tid);
|
|
}
|
|
# endif
|
|
}
|
|
#endif
|
|
}
|
|
|
|
MUST(vformat(builder, fmtstr, params));
|
|
if (newline)
|
|
builder.append('\n');
|
|
#ifdef AK_OS_ANDROID
|
|
builder.append('\0');
|
|
#endif
|
|
auto const string = builder.string_view();
|
|
|
|
#ifdef AK_OS_ANDROID
|
|
__android_log_write(ANDROID_LOG_DEBUG, s_log_tag_name, string.characters_without_null_termination());
|
|
#else
|
|
[[maybe_unused]] auto rc = write(STDERR_FILENO, string.characters_without_null_termination(), string.length());
|
|
#endif
|
|
}
|
|
|
|
template struct Formatter<unsigned char, void>;
|
|
template struct Formatter<unsigned short, void>;
|
|
template struct Formatter<unsigned int, void>;
|
|
template struct Formatter<unsigned long, void>;
|
|
template struct Formatter<unsigned long long, void>;
|
|
template struct Formatter<short, void>;
|
|
template struct Formatter<int, void>;
|
|
template struct Formatter<long, void>;
|
|
template struct Formatter<long long, void>;
|
|
template struct Formatter<signed char, void>;
|
|
|
|
} // namespace AK
|