IconUtils: add Apple Icon Image format support

Motivation: some Android NDKs do not have iconv.

CMakeLists.txt

@@ -2,6 +2,7 @@ cmake_minimum_required (VERSION 3.0...3.27)
 project (liberty C CXX)
 
 # Moar warnings
+set (CMAKE_CXX_STANDARD 11)
 if ("${CMAKE_C_COMPILER_ID}" MATCHES "GNU" OR CMAKE_COMPILER_IS_GNUCC)
 	# -Wunused-function is pretty annoying here, as everything is static
 	set (wdisabled "-Wno-unused-function")
@@ -104,6 +105,7 @@ else ()
 	add_executable (test-lxdrgen-cpp tests/lxdrgen.cpp
 		${lxdrgen_base}.cpp tools/lxdrgen-cpp-posix.cpp)
 endif ()
+target_link_libraries (test-lxdrgen-cpp ${common_libraries})
 target_include_directories (test-lxdrgen-cpp PUBLIC ${PROJECT_BINARY_DIR})
 add_test (NAME test-lxdrgen-cpp COMMAND test-lxdrgen-cpp)
 

README.adoc

@@ -45,8 +45,9 @@ lxdrgen-c.awk::
 	LibertyXDR backend that builds on top of the C pseudolibrary.
 
 lxdrgen-cpp.awk::
-lxdrgen-cpp-win32.cpp::
 lxdrgen-cpp-posix.cpp::
+lxdrgen-cpp-qt.cpp::
+lxdrgen-cpp-win32.cpp::
 	LibertyXDR backend for C++, primarily targeting Win32 and its wide strings.
 	Link the result together with one of the accompanied source files.
 

cmake/IconUtils.cmake

@@ -38,3 +38,47 @@ function (icon_for_win32 ico pngs pngs_raw)
 		DEPENDS ${pngs} ${pngs_raw}
 		COMMENT "Generating Windows program icon" VERBATIM)
 endfunction ()
+
+function (icon_to_iconset_size name svg size iconset outputs)
+	math (EXPR _size2x "${size} * 2")
+	set (_dimensions "${size}x${size}")
+	set (_png1x "${iconset}/icon_${_dimensions}.png")
+	set (_png2x "${iconset}/icon_${_dimensions}@2x.png")
+	set (${outputs} "${_png1x};${_png2x}" PARENT_SCOPE)
+
+	set (_find_program_REQUIRE)
+	if (NOT ${CMAKE_VERSION} VERSION_LESS 3.18.0)
+		set (_find_program_REQUIRE REQUIRED)
+	endif ()
+
+	find_program (rsvg_convert_EXECUTABLE rsvg-convert ${_find_program_REQUIRE})
+	add_custom_command (OUTPUT "${_png1x}" "${_png2x}"
+		COMMAND ${CMAKE_COMMAND} -E make_directory "${iconset}"
+		COMMAND ${rsvg_convert_EXECUTABLE} "--output=${_png1x}"
+			"--width=${size}" "--height=${size}" -- "${svg}"
+		COMMAND ${rsvg_convert_EXECUTABLE} "--output=${_png2x}"
+			"--width=${_size2x}" "--height=${_size2x}" -- "${svg}"
+		DEPENDS "${svg}"
+		COMMENT "Generating ${name} ${_dimensions} icons" VERBATIM)
+endfunction ()
+function (icon_to_icns svg output_basename output)
+	get_filename_component (_name "${output_basename}" NAME_WE)
+	set (_iconset "${PROJECT_BINARY_DIR}/${_name}.iconset")
+	set (_icon "${PROJECT_BINARY_DIR}/${output_basename}")
+	set (${output} "${_icon}" PARENT_SCOPE)
+
+	set (_icon_png_list)
+	foreach (_icon_size 16 32 128 256 512)
+		icon_to_iconset_size ("${_name}" "${svg}"
+			"${_icon_size}" "${_iconset}" _icon_pngs)
+		list (APPEND _icon_png_list ${_icon_pngs})
+	endforeach ()
+
+	# XXX: This will not normally work from within Nix.
+	add_custom_command (OUTPUT "${_icon}"
+		COMMAND iconutil -c icns -o "${_icon}" "${_iconset}"
+		DEPENDS ${_icon_png_list}
+		COMMENT "Generating ${_name} icon" VERBATIM)
+	set_source_files_properties ("${_icon}" PROPERTIES
+		MACOSX_PACKAGE_LOCATION Resources)
+endfunction ()

liberty-xui.c

@@ -205,8 +205,8 @@ static void
 line_editor_start (struct line_editor *self, char prompt)
 {
 	self->alloc = 16;
-	self->line = xcalloc (sizeof *self->line, self->alloc);
+	self->line = xcalloc (self->alloc, sizeof *self->line);
-	self->w = xcalloc (sizeof *self->w, self->alloc);
+	self->w = xcalloc (self->alloc, sizeof *self->w);
 	self->len = 0;
 	self->point = 0;
 	self->prompt = prompt;

liberty.c

@@ -316,7 +316,7 @@ xstrndup (const char *s, size_t n)
 #define ARRAY(type, name) type *name; size_t name ## _len, name ## _alloc;
 #define ARRAY_INIT_SIZED(a, n)                                                 \
 	BLOCK_START                                                                \
-		(a) = xcalloc (sizeof *(a), (a ## _alloc) = (n));                      \
+		(a) = xcalloc ((a ## _alloc) = (n), sizeof *(a));                      \
 		(a ## _len) = 0;                                                       \
 	BLOCK_END
 #define ARRAY_INIT(a) ARRAY_INIT_SIZED (a, 16)
@@ -398,7 +398,7 @@ strv_make (void)
 	struct strv self;
 	self.alloc = 4;
 	self.len = 0;
-	self.vector = xcalloc (sizeof *self.vector, self.alloc);
+	self.vector = xcalloc (self.alloc, sizeof *self.vector);
 	return self;
 }
 
@@ -4833,7 +4833,8 @@ config_item_write_kv_pair (struct config_writer *self,
 		str_append_printf (self->output,
 			"%s# %s\n", indent, value->schema->comment);
 
-	bool can_use_word = true;
+	char *end = NULL;
+	bool can_use_word = ((void) strtoll (key, &end, 10), end == key);
 	for (const char *p = key; *p; p++)
 		if (!config_tokenizer_is_word_char (*p))
 			can_use_word = false;

tests/liberty.c

@@ -636,7 +636,7 @@ test_config_validate_nonnegative
 	return false;
 }
 
-static struct config_schema g_config_test[] =
+static const struct config_schema g_config_test[] =
 {
 	{ .name      = "foo",
 	  .comment   = "baz",
@@ -647,7 +647,7 @@ static struct config_schema g_config_test[] =
 	  .type      = CONFIG_ITEM_INTEGER,
 	  .validate  = test_config_validate_nonnegative,
 	  .default_  = "1" },
-	{ .name      = "foobar",
+	{ .name      = "123",
 	  .type      = CONFIG_ITEM_STRING,
 	  .default_  = "\"qux\\x01`\" \"\"`a`" },
 	{}
@@ -676,10 +676,11 @@ test_config (void)
 	config_item_destroy (invalid);
 
 	hard_assert (!strcmp ("qux\001`a",
-		config_item_get (config.root, "top.foobar", NULL)->value.string.str));
+		config_item_get (config.root, "top.123", NULL)->value.string.str));
 
 	struct str s = str_make ();
 	config_item_write (config.root, true, &s);
+	print_debug ("%s", s.str);
 	struct config_item *parsed = config_item_parse (s.str, s.len, false, NULL);
 	hard_assert (parsed);
 	config_item_destroy (parsed);

tools/lxdrgen-cpp-qt.cpp

@@ -0,0 +1,23 @@
+// lxdrgen-cpp-qt.cpp: Qt support code for lxdrgen-cpp.awk.
+//
+// Copyright (c) 2024, Přemysl Eric Janouch <p@janouch.name>
+// SPDX-License-Identifier: 0BSD
+#include <QString>
+#include <string>
+
+namespace LibertyXDR {
+
+bool utf8_to_wstring(const uint8_t *utf8, size_t length, std::wstring &wide) {
+	QByteArrayView view(reinterpret_cast<const char *>(utf8), length);
+	if (!view.isValidUtf8())
+		return false;
+	wide = QString::fromUtf8(view).toStdWString();
+	return true;
+}
+
+bool wstring_to_utf8(const std::wstring &wide, std::string &utf8) {
+	utf8 = QString::fromStdWString(wide).toUtf8().toStdString();
+	return true;
+}
+
+} // namespace LibertyXDR

tools/lxdrgen-go.awk

@@ -1,6 +1,6 @@
 # lxdrgen-go.awk: Go backend for lxdrgen.awk.
 #
-# Copyright (c) 2022, Přemysl Eric Janouch <p@janouch.name>
+# Copyright (c) 2022 - 2024, Přemysl Eric Janouch <p@janouch.name>
 # SPDX-License-Identifier: 0BSD
 #
 # This backend also enables proxying to other endpoints using JSON.
@@ -145,7 +145,7 @@ function codegen_begin(    funcname) {
 	print "// " funcname " tries to serialize a string value,"
 	print "// appending it to the end of a byte stream."
 	print "func " funcname "(data []byte, s string) ([]byte, bool) {"
-	print "\tif len(s) > math.MaxUint32 {"
+	print "\tif int64(len(s)) > math.MaxUint32 {"
 	print "\t\treturn nil, false"
 	print "\t}"
 	print "\tdata = binary.BigEndian.AppendUint32(data, uint32(len(s)))"
@@ -301,9 +301,11 @@ function codegen_marshal(type, f,    marshal) {
 		"\t}\n"
 }
 
-function codegen_struct_field_marshal(d, cg,    camel, f, marshal) {
+function codegen_struct_field_marshal(d, cg, isaccessor,    camel, f, marshal) {
 	camel = snaketocamel(d["name"])
 	f = "s." camel
+	if (isaccessor)
+		f = f "()"
 	if (!d["isarray"]) {
 		append(cg, "marshal",
 			"\tb = append(b, `,\"" decapitalize(camel) "\":`...)\n" \
@@ -333,7 +335,7 @@ function codegen_struct_field_marshal(d, cg,    camel, f, marshal) {
 }
 
 function codegen_struct_field(d, cg,    camel, f, serialize, deserialize) {
-	codegen_struct_field_marshal(d, cg)
+	codegen_struct_field_marshal(d, cg, 0)
 
 	camel = snaketocamel(d["name"])
 	f = "s." camel
@@ -384,15 +386,11 @@ function codegen_struct_field(d, cg,    camel, f, serialize, deserialize) {
 	}
 }
 
-function codegen_struct_tag(d, cg,    camel, f) {
+function codegen_struct_tag(d, cg) {
-	codegen_struct_field_marshal(d, cg)
+	codegen_struct_field_marshal(d, cg, 1)
 
-	camel = snaketocamel(d["name"])
+	# Do not serialize or deserialize here,
-	f = "s." camel
+	# that is already done by the containing union.
-	append(cg, "fields", "\t" camel " " CodegenGoType[d["type"]] \
-		" `json:\"" decapitalize(camel) "\"`\n")
-	append(cg, "serialize", sprintf(CodegenSerialize[d["type"]], f))
-	# Do not deserialize here, that is already done by the containing union.
 }
 
 function codegen_struct(name, cg,    gotype) {
@@ -450,13 +448,18 @@ function codegen_union_struct(name, casename, cg, scg,     structname, init) {
 	structname = name snaketocamel(casename)
 	codegen_struct(structname, scg)
 
-	init = CodegenGoType[structname] "{" cg["tagname"] \
+	print "func (u *" CodegenGoType[structname] ") " cg["tagname"] "() " \
-		": " decapitalize(cg["tagname"]) "}"
+		CodegenGoType[cg["tagtype"]] " {"
+	print "\treturn " CodegenGoType[cg["tagtype"]] snaketocamel(casename)
+	print "}"
+	print ""
+
+	init = CodegenGoType[structname] "{}"
 	append(cg, "unmarshal",
 		"\tcase " CodegenGoType[cg["tagtype"]] snaketocamel(casename) ":\n" \
 		"\t\ts := " init "\n" \
 		"\t\terr = json.Unmarshal(data, &s)\n" \
-		"\t\tu.Interface = &s\n")
+		"\t\tu.Variant = &s\n")
 	append(cg, "serialize",
 		"\tcase *" CodegenGoType[structname] ":\n" \
 		indent(sprintf(CodegenSerialize[structname], "union")))
@@ -464,20 +467,23 @@ function codegen_union_struct(name, casename, cg, scg,     structname, init) {
 		"\tcase " CodegenGoType[cg["tagtype"]] snaketocamel(casename) ":\n" \
 		"\t\ts := " init "\n" \
 		indent(sprintf(CodegenDeserialize[structname], "s")) \
-		"\t\tu.Interface = &s\n")
+		"\t\tu.Variant = &s\n")
 }
 
 function codegen_union(name, cg, exhaustive,    gotype, tagvar) {
 	gotype = PrefixCamel name
+	# This must be a struct, so that UnmarshalJSON can create concrete types.
 	print "type " gotype " struct {"
-	print "\tInterface any"
+	print "\tVariant interface {"
+	print "\t\t" cg["tagname"] "() " CodegenGoType[cg["tagtype"]]
+	print "\t}"
 	print "}"
 	print ""
 
 	# This cannot be a pointer method, it wouldn't work recursively.
 	CodegenIsMarshaler[name] = 1
 	print "func (u " gotype ") MarshalJSON() ([]byte, error) {"
-	print "\treturn u.Interface.(json.Marshaler).MarshalJSON()"
+	print "\treturn u.Variant.(json.Marshaler).MarshalJSON()"
 	print "}"
 	print ""
 
@@ -499,13 +505,15 @@ function codegen_union(name, cg, exhaustive,    gotype, tagvar) {
 	print "}"
 	print ""
 
-	# XXX: Consider changing the interface into an AppendTo/ConsumeFrom one,
+	# XXX: Consider rather testing the type for having an AppendTo method,
-	# that would eliminate these type case switches entirely.
+	# which would eliminate this type case switch entirely.
-	# On the other hand, it would make it possible to send unsuitable structs.
 	print "func (u *" gotype ") AppendTo(data []byte) ([]byte, bool) {"
 	print "\tok := true"
-	print "\tswitch union := u.Interface.(type) {"
+	print sprintf(CodegenSerialize[cg["tagtype"]],
+		"u.Variant." cg["tagname"] "()") \
+		"\tswitch union := u.Variant.(type) {"
 	print cg["serialize"] "\tdefault:"
+	print "\t\t_ = union"
 	print "\t\treturn nil, false"
 	print "\t}"
 	print "\treturn data, ok"