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// Copyright Catch2 Authors
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE.txt or copy at
// https://www.boost.org/LICENSE_1_0.txt)
// SPDX-License-Identifier: BSL-1.0
#include <catch2/internal/catch_enforce.hpp>
#include <catch2/internal/catch_jsonwriter.hpp>
namespace Catch {
void JsonUtils::indent( std::ostream& os, std::uint64_t level ) {
for ( std::uint64_t i = 0; i < level; ++i ) {
os << " ";
}
}
void JsonUtils::appendCommaNewline( std::ostream& os,
bool& should_comma,
std::uint64_t level ) {
if ( should_comma ) { os << ','; }
should_comma = true;
os << '\n';
indent( os, level );
}
JsonObjectWriter::JsonObjectWriter( std::ostream& os ):
JsonObjectWriter{ os, 0 } {}
JsonObjectWriter::JsonObjectWriter( std::ostream& os,
std::uint64_t indent_level ):
m_os{ os }, m_indent_level{ indent_level } {
m_os << '{';
}
JsonObjectWriter::JsonObjectWriter( JsonObjectWriter&& source ) noexcept:
m_os{ source.m_os },
m_indent_level{ source.m_indent_level },
m_should_comma{ source.m_should_comma },
m_active{ source.m_active } {
source.m_active = false;
}
JsonObjectWriter::~JsonObjectWriter() {
if ( !m_active ) { return; }
m_os << '\n';
JsonUtils::indent( m_os, m_indent_level );
m_os << '}';
}
JsonValueWriter JsonObjectWriter::write( StringRef key ) {
JsonUtils::appendCommaNewline(
m_os, m_should_comma, m_indent_level + 1 );
m_os << '"' << key << "\": ";
return JsonValueWriter{ m_os, m_indent_level + 1 };
}
JsonArrayWriter::JsonArrayWriter( std::ostream& os ):
JsonArrayWriter{ os, 0 } {}
JsonArrayWriter::JsonArrayWriter( std::ostream& os,
std::uint64_t indent_level ):
m_os{ os }, m_indent_level{ indent_level } {
m_os << '[';
}
JsonArrayWriter::JsonArrayWriter( JsonArrayWriter&& source ) noexcept:
m_os{ source.m_os },
m_indent_level{ source.m_indent_level },
m_should_comma{ source.m_should_comma },
m_active{ source.m_active } {
source.m_active = false;
}
JsonArrayWriter::~JsonArrayWriter() {
if ( !m_active ) { return; }
m_os << '\n';
JsonUtils::indent( m_os, m_indent_level );
m_os << ']';
}
JsonObjectWriter JsonArrayWriter::writeObject() {
JsonUtils::appendCommaNewline(
m_os, m_should_comma, m_indent_level + 1 );
return JsonObjectWriter{ m_os, m_indent_level + 1 };
}
JsonArrayWriter JsonArrayWriter::writeArray() {
JsonUtils::appendCommaNewline(
m_os, m_should_comma, m_indent_level + 1 );
return JsonArrayWriter{ m_os, m_indent_level + 1 };
}
JsonArrayWriter& JsonArrayWriter::write( bool value ) {
return writeImpl( value );
}
JsonValueWriter::JsonValueWriter( std::ostream& os ):
JsonValueWriter{ os, 0 } {}
JsonValueWriter::JsonValueWriter( std::ostream& os,
std::uint64_t indent_level ):
m_os{ os }, m_indent_level{ indent_level } {}
JsonObjectWriter JsonValueWriter::writeObject() && {
return JsonObjectWriter{ m_os, m_indent_level };
}
JsonArrayWriter JsonValueWriter::writeArray() && {
return JsonArrayWriter{ m_os, m_indent_level };
}
void JsonValueWriter::write( Catch::StringRef value ) && {
writeImpl( value, true );
}
void JsonValueWriter::write( bool value ) && {
writeImpl( value ? "true"_sr : "false"_sr, false );
}
void JsonValueWriter::writeImpl( Catch::StringRef value, bool quote ) {
if ( quote ) { m_os << '"'; }
for (char c : value) {
// Escape list taken from https://www.json.org/json-en.html,
// string definition.
// Note that while forward slash _can_ be escaped, it does
// not have to be, if JSON is not further embedded somewhere
// where forward slash is meaningful.
if ( c == '"' ) {
m_os << "\\\"";
} else if ( c == '\\' ) {
m_os << "\\\\";
} else if ( c == '\b' ) {
m_os << "\\b";
} else if ( c == '\f' ) {
m_os << "\\f";
} else if ( c == '\n' ) {
m_os << "\\n";
} else if ( c == '\r' ) {
m_os << "\\r";
} else if ( c == '\t' ) {
m_os << "\\t";
} else {
m_os << c;
}
}
if ( quote ) { m_os << '"'; }
}
} // namespace Catch
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