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AK+Format: Add new integer to string backend.

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I put this into the <AK/PrintfImplementation.h> header in the hope that
it could be re-used by the printf implementation. That would not be
super trivial though, so I am not doing that now.
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asynts 2020-09-26 15:26:00 +02:00 • committed by Andreas Kling
parent 8af67210cf
commit 2111fc5f63
2 changed files with 291 additions and 0 deletions
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AK/Tests/TestPrintf.cpp Normal file
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/*
* Copyright (c) 2020, the SerenityOS developers.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <AK/TestSuite.h>
#include <AK/PrintfImplementation.h>
#include <AK/StringBuilder.h>
TEST_CASE(format_unsigned_with_internal_implementation)
{
Array<u8, 128> buffer;
size_t used = 0;
used = PrintfImplementation::convert_unsigned_to_string(12341234, buffer, 10, false);
EXPECT_EQ(StringView { buffer.span().trim(used) }, "12341234");
used = PrintfImplementation::convert_unsigned_to_string(12341234, buffer, 16, false);
EXPECT_EQ(StringView { buffer.span().trim(used) }, "bc4ff2");
used = PrintfImplementation::convert_unsigned_to_string(12341234, buffer, 16, true);
EXPECT_EQ(StringView { buffer.span().trim(used) }, "BC4FF2");
used = PrintfImplementation::convert_unsigned_to_string(0, buffer, 10, true);
EXPECT_EQ(StringView { buffer.span().trim(used) }, "0");
used = PrintfImplementation::convert_unsigned_to_string(NumericLimits<u64>::max(), buffer, 10, true);
EXPECT_EQ(StringView { buffer.span().trim(used) }, "18446744073709551615");
}
TEST_CASE(format_unsigned_just_pass_through)
{
StringBuilder builder;
size_t used = 0;
builder.clear();
used = PrintfImplementation::convert_unsigned_to_string(12341234, builder);
EXPECT_EQ(used, 8u);
EXPECT_EQ(builder.to_string(), "12341234");
builder.clear();
used = PrintfImplementation::convert_unsigned_to_string(12341234, builder, 16);
EXPECT_EQ(used, 6u);
EXPECT_EQ(builder.to_string(), "bc4ff2");
builder.clear();
used = PrintfImplementation::convert_unsigned_to_string(12341234, builder, 16, false, true);
EXPECT_EQ(used, 6u);
EXPECT_EQ(builder.to_string(), "BC4FF2");
}
TEST_CASE(format_unsigned)
{
StringBuilder builder;
builder.clear();
PrintfImplementation::convert_unsigned_to_string(42, builder, 10, false, false, true, PrintfImplementation::Align::Right, 4, '*', PrintfImplementation::SignMode::OnlyIfNeeded);
EXPECT_EQ(builder.to_string(), "0042");
builder.clear();
PrintfImplementation::convert_unsigned_to_string(42, builder, 10, false, false, true, PrintfImplementation::Align::Left, 4, '*', PrintfImplementation::SignMode::OnlyIfNeeded);
EXPECT_EQ(builder.to_string(), "42**");
builder.clear();
PrintfImplementation::convert_unsigned_to_string(42, builder, 10, false, false, true, PrintfImplementation::Align::Center, 4, '*', PrintfImplementation::SignMode::OnlyIfNeeded);
EXPECT_EQ(builder.to_string(), "*42*");
builder.clear();
PrintfImplementation::convert_unsigned_to_string(42, builder, 10, false, false, true, PrintfImplementation::Align::Center, 9, '*', PrintfImplementation::SignMode::OnlyIfNeeded);
EXPECT_EQ(builder.to_string(), "***42****");
builder.clear();
PrintfImplementation::convert_unsigned_to_string(42, builder, 10, false, false, true, PrintfImplementation::Align::Center, 9, '*', PrintfImplementation::SignMode::Reserved);
EXPECT_EQ(builder.to_string(), "*** 42***");
builder.clear();
PrintfImplementation::convert_unsigned_to_string(42, builder, 10, false, false, true, PrintfImplementation::Align::Left, 4, '*', PrintfImplementation::SignMode::Always, true);
EXPECT_EQ(builder.to_string(), "-42*");
builder.clear();
PrintfImplementation::convert_unsigned_to_string(42, builder, 10, false, false, true, PrintfImplementation::Align::Center, 4, '*', PrintfImplementation::SignMode::Reserved, true);
EXPECT_EQ(builder.to_string(), "-42*");
builder.clear();
PrintfImplementation::convert_unsigned_to_string(42, builder, 10, false, false, true, PrintfImplementation::Align::Right, 4, '*', PrintfImplementation::SignMode::OnlyIfNeeded, true);
EXPECT_EQ(builder.to_string(), "-042");
builder.clear();
PrintfImplementation::convert_unsigned_to_string(32, builder, 16, true, false, true, PrintfImplementation::Align::Right, 8, '*', PrintfImplementation::SignMode::OnlyIfNeeded, true);
EXPECT_EQ(builder.to_string(), "-0x00020");
}
TEST_CASE(format_signed)
{
StringBuilder builder;
builder.clear();
PrintfImplementation::convert_signed_to_string(42, builder, 10, false, false, false, PrintfImplementation::Align::Right, 8, '/', PrintfImplementation::SignMode::OnlyIfNeeded);
EXPECT_EQ(builder.to_string(), "//////42");
}
TEST_MAIN(Printf)