AK: Use new format functions.

13 files changed, 74 insertions, 91 deletions

diff --git a/AK/Format.cpp b/AK/Format.cpp
index 45188c752b..3f0f725a2e 100644
--- a/AK/Format.cpp
+++ b/AK/Format.cpp
@@ -465,7 +465,7 @@ void StandardFormatter::parse(TypeErasedFormatParams& params, FormatParser& pars
         m_mode = Mode::Pointer;
 
     if (!parser.is_eof())
-        dbg() << __PRETTY_FUNCTION__ << " did not consume '" << parser.remaining() << "'";
+        dbgln("{} did not consume '{}'", __PRETTY_FUNCTION__, parser.remaining());
 
     ASSERT(parser.is_eof());
 }
diff --git a/AK/IPv4Address.h b/AK/IPv4Address.h
index 8beb3ba0e1..22da7c6578 100644
--- a/AK/IPv4Address.h
+++ b/AK/IPv4Address.h
@@ -68,7 +68,7 @@ public:
 
     String to_string() const
     {
-        return String::format("%u.%u.%u.%u", m_data[0], m_data[1], m_data[2], m_data[3]);
+        return String::formatted("{}.{}.{}.{}", m_data[0], m_data[1], m_data[2], m_data[3]);
     }
 
     static Optional<IPv4Address> from_string(const StringView& string)
diff --git a/AK/JsonObject.h b/AK/JsonObject.h
index 2fe396c026..0cdff4fa54 100644
--- a/AK/JsonObject.h
+++ b/AK/JsonObject.h
@@ -182,7 +182,7 @@ inline void JsonValue::serialize(Builder& builder) const
                 builder.append("\\\\");
                 break;
             default:
-                builder.appendf("%c", ch);
+                builder.append(ch);
             }
         }
         builder.append("\"");
@@ -202,16 +202,16 @@ inline void JsonValue::serialize(Builder& builder) const
         break;
 #endif
     case Type::Int32:
-        builder.appendf("%d", as_i32());
+        builder.appendff("{}", as_i32());
         break;
     case Type::Int64:
-        builder.appendf("%lld", as_i64());
+        builder.appendff("{}", as_i64());
         break;
     case Type::UnsignedInt32:
-        builder.appendf("%u", as_u32());
+        builder.appendff("{}", as_u32());
         break;
     case Type::UnsignedInt64:
-        builder.appendf("%llu", as_u64());
+        builder.appendff("{}", as_u64());
         break;
     case Type::Null:
         builder.append("null");
diff --git a/AK/MACAddress.h b/AK/MACAddress.h
index e511da23f1..dd0977ed8e 100644
--- a/AK/MACAddress.h
+++ b/AK/MACAddress.h
@@ -62,7 +62,7 @@ public:
 
     String to_string() const
     {
-        return String::format("%02x:%02x:%02x:%02x:%02x:%02x", m_data[0], m_data[1], m_data[2], m_data[3], m_data[4], m_data[5]);
+        return String::formatted("{:02x}:{:02x}:{:02x}:{:02x}:{:02x}:{:02x}", m_data[0], m_data[1], m_data[2], m_data[3], m_data[4], m_data[5]);
     }
 
     bool is_zero() const
diff --git a/AK/MappedFile.cpp b/AK/MappedFile.cpp
index 3224e68665..9153475e7a 100644
--- a/AK/MappedFile.cpp
+++ b/AK/MappedFile.cpp
@@ -57,7 +57,7 @@ MappedFile::MappedFile(const StringView& file_name)
     }
 
 #ifdef DEBUG_MAPPED_FILE
-    dbgprintf("MappedFile{%s} := { fd=%d, m_size=%zu, m_map=%p }\n", file_name.to_string().characters(), fd, m_size, m_map);
+    dbgln("MappedFile(\"{}\") := ( fd={}, m_size={}, m_map={} )", file_name, fd, m_size, m_map);
 #endif
 
     close(fd);
diff --git a/AK/NumberFormat.h b/AK/NumberFormat.h
index 0f172ed3bb..0d30ec88f3 100644
--- a/AK/NumberFormat.h
+++ b/AK/NumberFormat.h
@@ -35,13 +35,13 @@ namespace AK {
 static String number_string_with_one_decimal(u64 number, u32 unit, const char* suffix)
 {
     int decimal = (number % unit) * 10 / unit;
-    return String::format("%llu.%d %s", number / unit, decimal, suffix);
+    return String::formatted("{}.{} {}", number / unit, decimal, suffix);
 }
 
 static inline String human_readable_size(size_t size)
 {
     if (size < 1 * KiB)
-        return String::format("%zu B", size);
+        return String::formatted("{} B", size);
     if (size < 1 * MiB)
         return number_string_with_one_decimal(size, KiB, "KiB");
     if (size < 1 * GiB)
diff --git a/AK/PrintfImplementation.h b/AK/PrintfImplementation.h
index fc4179feef..d3d1545e62 100644
--- a/AK/PrintfImplementation.h
+++ b/AK/PrintfImplementation.h
@@ -401,7 +401,7 @@ struct PrintfImpl {
     }
     ALWAYS_INLINE int format_unrecognized(char format_op, const char* fmt, const ModifierState&, ArgumentListRefT) const
     {
-        dbg() << "printf_internal: Unimplemented format specifier " << format_op << " (fmt: " << fmt << ")";
+        dbgln("printf_internal: Unimplemented format specifier {} (fmt: {})", format_op, fmt);
         return 0;
     }
 
diff --git a/AK/SharedBuffer.cpp b/AK/SharedBuffer.cpp
index 61782fcb28..04229f595e 100644
--- a/AK/SharedBuffer.cpp
+++ b/AK/SharedBuffer.cpp
@@ -40,7 +40,7 @@
 
 static String shbuf_shm_name(int shbuf_id)
 {
-    return String::format("/serenity-shm:%d", shbuf_id);
+    return String::formatted("/serenity-shm:{}", shbuf_id);
 }
 
 #    endif
diff --git a/AK/StringImpl.cpp b/AK/StringImpl.cpp
index c07b9f3c9e..eae881764b 100644
--- a/AK/StringImpl.cpp
+++ b/AK/StringImpl.cpp
@@ -42,7 +42,7 @@ void dump_all_stringimpls()
 {
     unsigned i = 0;
     for (auto& it : *g_all_live_stringimpls) {
-        dbgprintf("%u: \"%s\"\n", i, (*it).characters());
+        dbgln("{}: \"{}\"", i, *it);
         ++i;
     }
 }
diff --git a/AK/TestSuite.h b/AK/TestSuite.h
index 1b2baa5852..f13b0a5fbf 100644
--- a/AK/TestSuite.h
+++ b/AK/TestSuite.h
@@ -28,34 +28,43 @@
 
 #define AK_TEST_SUITE
 
-#define ASSERT(x)                                                                                         \
-    do {                                                                                                  \
-        if (!(x))                                                                                         \
-            fprintf(stderr, "\033[31;1mFAIL\033[0m: %s:%d: ASSERT(%s) failed\n", __FILE__, __LINE__, #x); \
-    } while (false)
+extern "C" __attribute__((noreturn)) void abort() noexcept;
+
+namespace AK {
+
+template<typename... Parameters>
+void warnln(const char* fmtstr, const Parameters&...);
+
+}
 
-#define RELEASE_ASSERT(x)                                                                                         \
-    do {                                                                                                          \
-        if (!(x))                                                                                                 \
-            fprintf(stderr, "\033[31;1mFAIL\033[0m: %s:%d: RELEASE_ASSERT(%s) failed\n", __FILE__, __LINE__, #x); \
+using AK::warnln;
+
+#define ASSERT(x)                                                                                    \
+    do {                                                                                             \
+        if (!(x))                                                                                    \
+            ::AK::warnln("\033[31;1mFAIL\033[0m: {}:{}: ASSERT({}) failed", __FILE__, __LINE__, #x); \
     } while (false)
 
-#define ASSERT_NOT_REACHED()                                                                                \
-    do {                                                                                                    \
-        fprintf(stderr, "\033[31;1mFAIL\033[0m: %s:%d: ASSERT_NOT_REACHED() called\n", __FILE__, __LINE__); \
-        abort();                                                                                            \
+#define RELEASE_ASSERT(x)                                                                                    \
+    do {                                                                                                     \
+        if (!(x))                                                                                            \
+            ::AK::warnln("\033[31;1mFAIL\033[0m: {}:{}: RELEASE_ASSERT({}) failed", __FILE__, __LINE__, #x); \
     } while (false)
 
-#define TODO()                                                                                \
-    do {                                                                                      \
-        fprintf(stderr, "\033[31;1mFAIL\033[0m: %s:%d: TODO() called\n", __FILE__, __LINE__); \
-        abort();                                                                              \
+#define ASSERT_NOT_REACHED()                                                                           \
+    do {                                                                                               \
+        ::AK::warnln("\033[31;1mFAIL\033[0m: {}:{}: ASSERT_NOT_REACHED() called", __FILE__, __LINE__); \
+        ::abort();                                                                                     \
     } while (false)
 
-#include <stdio.h>
+#define TODO()                                                                                   \
+    do {                                                                                         \
+        ::AK::warnln(stderr, "\033[31;1mFAIL\033[0m: {}:{}: TODO() called", __FILE__, __LINE__); \
+        ::abort();                                                                               \
+    } while (false)
 
+#include <AK/Format.h>
 #include <AK/Function.h>
-#include <AK/LogStream.h>
 #include <AK/NonnullRefPtrVector.h>
 #include <AK/String.h>
 
@@ -159,12 +168,12 @@ void TestSuite::main(const String& suite_name, int argc, char** argv)
     const auto& matching_tests = find_cases(search_string, !do_benchmarks_only, !do_tests_only);
 
     if (do_list_cases) {
-        out() << "Available cases for " << suite_name << ":";
+        outln("Available cases for {}:", suite_name);
         for (const auto& test : matching_tests) {
-            out() << "    " << test.name();
+            outln("    {}", test.name());
         }
     } else {
-        out() << "Running " << matching_tests.size() << " cases out of " << m_cases.size() << ".";
+        outln("Running {} cases out of {}.", matching_tests.size(), m_cases.size());
 
         run(matching_tests);
     }
@@ -216,37 +225,13 @@ void TestSuite::run(const NonnullRefPtrVector<TestCase>& tests)
         }
     }
 
-    dbg() << "Finished " << test_count << " tests and " << benchmark_count << " benchmarks in " << global_timer.elapsed_milliseconds() << " ms ("
-          << m_testtime << " tests, " << m_benchtime << " benchmarks, " << (global_timer.elapsed_milliseconds() - (m_testtime + m_benchtime)) << " other)";
-}
-
-// Use SFINAE to print if we can.
-// This trick is good enough for TestSuite.h, but not flexible enough to be put into LogStream.h.
-template<typename Stream, typename LHS, typename RHS, typename = void>
-struct MaybeStream {
-    static const Stream& call(const Stream& stream, const LHS&, const RHS&)
-    {
-        return stream;
-    }
-};
-template<typename Stream, typename LHS, typename RHS>
-struct MaybeStream<Stream, LHS, RHS, AK::Void<decltype(*reinterpret_cast<const Stream*>(0) << "" << *reinterpret_cast<const LHS*>(0) << "" << *reinterpret_cast<const RHS*>(0) << "")>> {
-    static const Stream& call(const Stream& stream, const LHS& lhs, const RHS& rhs)
-    {
-        return stream << ": LHS=\"" << lhs << "\", RHS=\"" << rhs << "\"";
-    }
-};
-template<typename Stream, typename LHS, typename RHS>
-static const Stream& maybe_print_rhs_lhs(const Stream& stream, const LHS& lhs, const RHS& rhs)
-{
-    return MaybeStream<Stream, LHS, RHS>::call(stream, lhs, rhs);
-}
-template<typename Stream, typename LHS, typename RHS>
-static const Stream& force_print_rhs_lhs(const Stream& stream, const LHS& lhs, const RHS& rhs)
-{
-    using _ = decltype(*reinterpret_cast<const Stream*>(0) << "" << *reinterpret_cast<const LHS*>(0) << "" << *reinterpret_cast<const RHS*>(0) << "");
-    (void)sizeof(_);
-    return MaybeStream<Stream, LHS, RHS>::call(stream, lhs, rhs);
+    dbgln("Finished {} tests and {} benchmarks in {}ms ({}ms tests, {}ms benchmarks, {}ms other).",
+        test_count,
+        benchmark_count,
+        global_timer.elapsed_milliseconds(),
+        m_testtime,
+        m_benchtime,
+        global_timer.elapsed_milliseconds() - (m_testtime + m_benchtime));
 }
 
 }
@@ -292,26 +277,26 @@ using AK::TestSuite;
         TestSuite::release();                                       \
     }
 
-#define EXPECT_EQ(a, b)                                                                                                                              \
-    do {                                                                                                                                             \
-        auto lhs = (a);                                                                                                                              \
-        auto rhs = (b);                                                                                                                              \
-        if (lhs != rhs)                                                                                                                              \
-            AK::maybe_print_rhs_lhs(warn() << "\033[31;1mFAIL\033[0m: " __FILE__ ":" << __LINE__ << ": EXPECT_EQ(" #a ", " #b ") failed", lhs, rhs); \
+#define EXPECT_EQ(a, b)                                                                                                                                                                \
+    do {                                                                                                                                                                               \
+        auto lhs = (a);                                                                                                                                                                \
+        auto rhs = (b);                                                                                                                                                                \
+        if (lhs != rhs)                                                                                                                                                                \
+            warnln("\033[31;1mFAIL\033[0m: {}:{}: EXPECT_EQ({}, {}) failed with lhs={} and rhs={}", __FILE__, __LINE__, #a, #b, FormatIfSupported { lhs }, FormatIfSupported { rhs }); \
     } while (false)
 
 // If you're stuck and `EXPECT_EQ` seems to refuse to print anything useful,
 // try this: It'll spit out a nice compiler error telling you why it doesn't print.
-#define EXPECT_EQ_FORCE(a, b)                                                                                                                        \
-    do {                                                                                                                                             \
-        auto lhs = (a);                                                                                                                              \
-        auto rhs = (b);                                                                                                                              \
-        if (lhs != rhs)                                                                                                                              \
-            AK::force_print_rhs_lhs(warn() << "\033[31;1mFAIL\033[0m: " __FILE__ ":" << __LINE__ << ": EXPECT_EQ(" #a ", " #b ") failed", lhs, rhs); \
+#define EXPECT_EQ_FORCE(a, b)                                                                                                              \
+    do {                                                                                                                                   \
+        auto lhs = (a);                                                                                                                    \
+        auto rhs = (b);                                                                                                                    \
+        if (lhs != rhs)                                                                                                                    \
+            warnln("\033[31;1mFAIL\033[0m: {}:{}: EXPECT_EQ({}, {}) failed with lhs={} and rhs={}", __FILE__, __LINE__, #a, #b, lhs, rhs); \
     } while (false)
 
-#define EXPECT(x)                                                                                      \
-    do {                                                                                               \
-        if (!(x))                                                                                      \
-            warn() << "\033[31;1mFAIL\033[0m: " __FILE__ ":" << __LINE__ << ": EXPECT(" #x ") failed"; \
+#define EXPECT(x)                                                                              \
+    do {                                                                                       \
+        if (!(x))                                                                              \
+            warnln("\033[31;1mFAIL\033[0m: {}:{}: EXPECT({}) failed", __FILE__, __LINE__, #x); \
     } while (false)
diff --git a/AK/URL.cpp b/AK/URL.cpp
index 042bd16c17..1c42904264 100644
--- a/AK/URL.cpp
+++ b/AK/URL.cpp
@@ -306,7 +306,7 @@ URL URL::complete_url(const String& string) const
         return {};
 
     if (string.starts_with("//")) {
-        URL url(String::format("%s:%s", m_protocol.characters(), string.characters()));
+        URL url(String::formatted("{}:{}", m_protocol, string));
         if (url.is_valid())
             return url;
     }
diff --git a/AK/URLParser.cpp b/AK/URLParser.cpp
index 1329272106..1a00334466 100644
--- a/AK/URLParser.cpp
+++ b/AK/URLParser.cpp
@@ -96,7 +96,7 @@ String urlencode(const StringView& input)
     for (char ch : input) {
         if (in_userinfo_set((u8)ch)) {
             builder.append('%');
-            builder.appendf("%02X", (u8)ch);
+            builder.appendff("{:02X}", ch);
         } else {
             builder.append(ch);
         }
diff --git a/AK/Utf8View.cpp b/AK/Utf8View.cpp
index f94d11ac69..0cec7a2f5d 100644
--- a/AK/Utf8View.cpp
+++ b/AK/Utf8View.cpp
@@ -197,13 +197,11 @@ u32 Utf8CodepointIterator::operator*() const
     int code_point_length_in_bytes = 0;
 
     bool first_byte_makes_sense = decode_first_byte(m_ptr[0], code_point_length_in_bytes, code_point_value_so_far);
-    if (!first_byte_makes_sense) {
-        dbg() << "First byte doesn't make sense, bytes: " << StringView((const char*)m_ptr, m_length);
-    }
+    if (!first_byte_makes_sense)
+        dbgln("First byte doesn't make sense, bytes: {}", StringView { (const char*)m_ptr, (size_t)m_length });
     ASSERT(first_byte_makes_sense);
-    if (code_point_length_in_bytes > m_length) {
-        dbg() << "Not enough bytes (need " << code_point_length_in_bytes << ", have " << m_length << "), first byte is: " << m_ptr[0] << " " << (const char*)m_ptr;
-    }
+    if (code_point_length_in_bytes > m_length)
+        dbgln("Not enough bytes (need {}, have {}), first byte is: {:#02x}, '{}'", code_point_length_in_bytes, m_length, m_ptr[0], (const char*)m_ptr);
     ASSERT(code_point_length_in_bytes <= m_length);
 
     for (int offset = 1; offset < code_point_length_in_bytes; offset++) {