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xml.cpp
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/*
* Copyright (c) 2022, Ali Mohammad Pur <[email protected]>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/LexicalPath.h>
#include <AK/Queue.h>
#include <LibCore/ArgsParser.h>
#include <LibCore/File.h>
#include <LibFileSystem/FileSystem.h>
#include <LibMain/Main.h>
#include <LibURL/Parser.h>
#include <LibURL/URL.h>
#include <LibXML/DOM/Document.h>
#include <LibXML/DOM/Node.h>
#include <LibXML/Parser/Parser.h>
static bool g_color = false;
static bool g_only_contents = false;
enum class ColorRole {
PITag,
PITarget,
PIData,
AttributeName,
Eq,
AttributeValue,
Tag,
Text,
Comment,
Reset,
Doctype,
Keyword,
};
static void color(ColorRole role)
{
if (!g_color)
return;
switch (role) {
case ColorRole::PITag:
case ColorRole::Doctype:
out("\x1b[{};{}m", 1, "38;5;223");
break;
case ColorRole::PITarget:
out("\x1b[{};{}m", 1, "38;5;23");
break;
case ColorRole::PIData:
out("\x1b[{};{}m", 1, "38;5;43");
break;
case ColorRole::AttributeName:
out("\x1b[38;5;27m");
break;
case ColorRole::Eq:
break;
case ColorRole::AttributeValue:
out("\x1b[38;5;46m");
break;
case ColorRole::Tag:
out("\x1b[{};{}m", 1, "38;5;220");
break;
case ColorRole::Text:
break;
case ColorRole::Comment:
out("\x1b[{};{}m", 3, "38;5;250");
break;
case ColorRole::Reset:
out("\x1b[0m");
break;
case ColorRole::Keyword:
out("\x1b[38;5;40m");
break;
}
}
static void dump(XML::Node const& node)
{
node.content.visit(
[](XML::Node::Text const& text) {
out("{}", text.builder.string_view());
},
[](XML::Node::Comment const& comment) {
color(ColorRole::Comment);
out("<!--{}-->", comment.text);
color(ColorRole::Reset);
},
[](XML::Node::Element const& element) {
color(ColorRole::Tag);
out("<{}", element.name);
color(ColorRole::Reset);
if (!element.attributes.is_empty()) {
for (auto& attribute : element.attributes) {
auto quote = attribute.value.contains('"') ? '\'' : '"';
color(ColorRole::AttributeName);
out(" {}", attribute.key);
color(ColorRole::Eq);
out("=");
color(ColorRole::AttributeValue);
out("{}{}{}", quote, attribute.value, quote);
color(ColorRole::Reset);
}
}
if (element.children.is_empty()) {
color(ColorRole::Tag);
out("/>");
color(ColorRole::Reset);
} else {
color(ColorRole::Tag);
out(">");
color(ColorRole::Reset);
for (auto& node : element.children)
dump(*node);
color(ColorRole::Tag);
out("</{}>", element.name);
color(ColorRole::Reset);
}
});
}
static void dump(XML::Document& document)
{
if (!g_only_contents) {
{
color(ColorRole::PITag);
out("<?");
color(ColorRole::Reset);
color(ColorRole::PITarget);
out("xml");
color(ColorRole::Reset);
color(ColorRole::PIData);
out(" version='{}'", document.version() == XML::Version::Version10 ? "1.0" : "1.1");
color(ColorRole::Reset);
color(ColorRole::PITag);
outln("?>");
}
for (auto& pi : document.processing_instructions()) {
color(ColorRole::PITag);
out("<?");
color(ColorRole::Reset);
color(ColorRole::PITarget);
out("{}", pi.key);
color(ColorRole::Reset);
if (!pi.value.is_empty()) {
color(ColorRole::PIData);
out(" {}", pi.value);
color(ColorRole::Reset);
}
color(ColorRole::PITag);
outln("?>");
}
if (auto maybe_doctype = document.doctype(); maybe_doctype.has_value()) {
auto& doctype = *maybe_doctype;
color(ColorRole::Doctype);
out("<!DOCTYPE ");
color(ColorRole::Tag);
out("{}", doctype.type);
if (!doctype.markup_declarations.is_empty()) {
color(ColorRole::Reset);
out(" [\n");
for (auto& entry : doctype.markup_declarations) {
entry.visit(
[&](XML::ElementDeclaration const& element) {
color(ColorRole::Doctype);
out(" <!ELEMENT ");
color(ColorRole::Tag);
out("{} ", element.type);
element.content_spec.visit(
[&](XML::ElementDeclaration::Empty const&) {
color(ColorRole::Keyword);
out("EMPTY");
},
[&](XML::ElementDeclaration::Any const&) {
color(ColorRole::Keyword);
out("ANY");
},
[&](XML::ElementDeclaration::Mixed const&) {
},
[&](XML::ElementDeclaration::Children const&) {
});
color(ColorRole::Doctype);
outln(">");
},
[&](XML::AttributeListDeclaration const& list) {
color(ColorRole::Doctype);
out(" <!ATTLIST ");
color(ColorRole::Tag);
out("{}", list.type);
for (auto& attribute : list.attributes) {
color(ColorRole::AttributeName);
out(" {} ", attribute.name);
color(ColorRole::Keyword);
attribute.type.visit(
[](XML::AttributeListDeclaration::StringType) {
out("CDATA");
},
[](XML::AttributeListDeclaration::TokenizedType type) {
switch (type) {
case XML::AttributeListDeclaration::TokenizedType::ID:
out("ID");
break;
case XML::AttributeListDeclaration::TokenizedType::IDRef:
out("IDREF");
break;
case XML::AttributeListDeclaration::TokenizedType::IDRefs:
out("IDREFS");
break;
case XML::AttributeListDeclaration::TokenizedType::Entity:
out("ENTITY");
break;
case XML::AttributeListDeclaration::TokenizedType::Entities:
out("ENTITIES");
break;
case XML::AttributeListDeclaration::TokenizedType::NMToken:
out("NMTOKEN");
break;
case XML::AttributeListDeclaration::TokenizedType::NMTokens:
out("NMTOKENS");
break;
}
},
[](XML::AttributeListDeclaration::NotationType const& type) {
out("NOTATION ");
color(ColorRole::Reset);
out("( ");
bool first = true;
for (auto& name : type.names) {
color(ColorRole::Reset);
if (first)
first = false;
else
out(" | ");
color(ColorRole::AttributeValue);
out("{}", name);
}
color(ColorRole::Reset);
out(" )");
},
[](XML::AttributeListDeclaration::Enumeration const& type) {
color(ColorRole::Reset);
out("( ");
bool first = true;
for (auto& name : type.tokens) {
color(ColorRole::Reset);
if (first)
first = false;
else
out(" | ");
color(ColorRole::AttributeValue);
out("{}", name);
}
color(ColorRole::Reset);
out(" )");
});
out(" ");
attribute.default_.visit(
[](XML::AttributeListDeclaration::Required) {
color(ColorRole::Keyword);
out("#REQUIRED");
},
[](XML::AttributeListDeclaration::Implied) {
color(ColorRole::Keyword);
out("#IMPLIED");
},
[](XML::AttributeListDeclaration::Fixed const& fixed) {
color(ColorRole::Keyword);
out("#FIXED ");
color(ColorRole::AttributeValue);
out("\"{}\"", fixed.value);
},
[](XML::AttributeListDeclaration::DefaultValue const& default_) {
color(ColorRole::AttributeValue);
out("\"{}\"", default_.value);
});
}
color(ColorRole::Doctype);
outln(">");
},
[&](XML::EntityDeclaration const& entity) {
color(ColorRole::Doctype);
out(" <!ENTITY ");
entity.visit(
[](XML::GEDeclaration const& declaration) {
color(ColorRole::Tag);
out("{} ", declaration.name);
declaration.definition.visit(
[](ByteString const& value) {
color(ColorRole::AttributeValue);
out("\"{}\"", value);
},
[](XML::EntityDefinition const& definition) {
if (definition.id.public_id.has_value()) {
color(ColorRole::Keyword);
out("PUBLIC ");
color(ColorRole::PITarget);
out("\"{}\" ", definition.id.public_id->public_literal);
} else {
color(ColorRole::Keyword);
out("SYSTEM ");
}
color(ColorRole::PITarget);
out("\"{}\" ", definition.id.system_id.system_literal);
if (definition.notation.has_value()) {
color(ColorRole::Keyword);
out(" NDATA ");
color(ColorRole::PITarget);
out("{}", *definition.notation);
}
});
color(ColorRole::Tag);
outln(">");
},
[](XML::PEDeclaration const& declaration) {
color(ColorRole::Tag);
out("{} ", declaration.name);
declaration.definition.visit(
[](ByteString const& value) {
color(ColorRole::AttributeValue);
out("\"{}\"", value);
},
[](XML::ExternalID const& id) {
if (id.public_id.has_value()) {
color(ColorRole::Keyword);
out("PUBLIC ");
color(ColorRole::PITarget);
out("\"{}\" ", id.public_id->public_literal);
} else {
color(ColorRole::Keyword);
out("SYSTEM ");
}
color(ColorRole::PITarget);
out("\"{}\"", id.system_id.system_literal);
});
color(ColorRole::Tag);
outln(">");
});
},
[&](XML::NotationDeclaration const&) {
});
}
color(ColorRole::Reset);
out("]");
}
color(ColorRole::Doctype);
outln(">");
}
}
dump(document.root());
}
static ByteString s_path;
static auto parse(StringView contents)
{
return XML::Parser {
contents,
{
.preserve_comments = true,
.resolve_external_resource = [&](XML::SystemID const& system_id, Optional<XML::PublicID> const&) -> ErrorOr<Variant<ByteString, Vector<XML::MarkupDeclaration>>> {
auto base = URL::create_with_file_scheme(s_path);
auto url = URL::Parser::basic_parse(system_id.system_literal, base);
if (!url.is_valid())
return Error::from_string_literal("Invalid URL");
if (url.scheme() != "file")
return Error::from_string_literal("NYI: Nonlocal entity");
auto file = TRY(Core::File::open(URL::percent_decode(url.serialize_path()), Core::File::OpenMode::Read));
return ByteString::copy(TRY(file->read_until_eof()));
},
},
};
}
enum class TestResult {
Passed,
Failed,
RunnerFailed,
};
static HashMap<ByteString, TestResult> s_test_results {};
static void do_run_tests(XML::Document& document)
{
auto& root = document.root().content.get<XML::Node::Element>();
VERIFY(root.name == "TESTSUITE");
Queue<XML::Node*> suites;
auto dump_cases = [&](auto& root) {
for (auto& node : root.children) {
auto element = node->content.template get_pointer<XML::Node::Element>();
if (!element)
continue;
if (element->name != "TESTCASES" && element->name != "TEST")
continue;
suites.enqueue(node);
}
};
dump_cases(root);
auto base_path = LexicalPath::dirname(s_path);
while (!suites.is_empty()) {
auto& node = *suites.dequeue();
auto& suite = node.content.get<XML::Node::Element>();
if (suite.name == "TESTCASES") {
dump_cases(suite);
continue;
}
if (suite.name == "TEST") {
Vector<StringView> bases;
for (auto* parent = node.parent; parent; parent = parent->parent) {
auto& attributes = parent->content.get<XML::Node::Element>().attributes;
auto it = attributes.find("xml:base");
if (it == attributes.end())
continue;
bases.append(it->value);
}
auto type = suite.attributes.find("TYPE")->value;
StringBuilder path_builder;
path_builder.append(base_path);
path_builder.append('/');
for (auto& entry : bases.in_reverse()) {
path_builder.append(entry);
path_builder.append('/');
}
auto test_base_path = path_builder.to_byte_string();
path_builder.append(suite.attributes.find("URI")->value);
auto url = URL::create_with_file_scheme(path_builder.string_view());
if (!url.is_valid()) {
warnln("Invalid URL {}", path_builder.string_view());
s_test_results.set(path_builder.string_view(), TestResult::RunnerFailed);
continue;
}
auto file_path = URL::percent_decode(url.serialize_path());
auto file_result = Core::File::open(file_path, Core::File::OpenMode::Read);
if (file_result.is_error()) {
warnln("Read error for {}: {}", file_path, file_result.error());
s_test_results.set(file_path, TestResult::RunnerFailed);
continue;
}
warnln("Running test {}", file_path);
auto contents = file_result.value()->read_until_eof();
if (contents.is_error()) {
warnln("Read error for {}: {}", file_path, contents.error());
s_test_results.set(file_path, TestResult::RunnerFailed);
continue;
}
auto parser = parse(contents.value());
auto doc_or_error = parser.parse();
if (doc_or_error.is_error()) {
if (type == "invalid" || type == "error" || type == "not-wf")
s_test_results.set(file_path, TestResult::Passed);
else
s_test_results.set(file_path, TestResult::Failed);
continue;
}
auto out = suite.attributes.find("OUTPUT");
if (out != suite.attributes.end()) {
auto out_path = LexicalPath::join(test_base_path, out->value).string();
auto file_result = Core::File::open(out_path, Core::File::OpenMode::Read);
if (file_result.is_error()) {
warnln("Read error for {}: {}", out_path, file_result.error());
s_test_results.set(file_path, TestResult::RunnerFailed);
continue;
}
auto contents = file_result.value()->read_until_eof();
if (contents.is_error()) {
warnln("Read error for {}: {}", out_path, contents.error());
s_test_results.set(file_path, TestResult::RunnerFailed);
continue;
}
auto parser = parse(contents.value());
auto out_doc_or_error = parser.parse();
if (out_doc_or_error.is_error()) {
warnln("Parse error for {}: {}", out_path, out_doc_or_error.error());
s_test_results.set(file_path, TestResult::RunnerFailed);
continue;
}
auto out_doc = out_doc_or_error.release_value();
if (out_doc.root() != doc_or_error.value().root()) {
s_test_results.set(file_path, TestResult::Failed);
continue;
}
}
if (type == "invalid" || type == "error" || type == "not-wf")
s_test_results.set(file_path, TestResult::Failed);
else
s_test_results.set(file_path, TestResult::Passed);
}
}
}
ErrorOr<int> serenity_main(Main::Arguments arguments)
{
StringView filename;
bool run_tests { false };
Core::ArgsParser parser;
parser.set_general_help("Parse and dump XML files");
parser.add_option(g_color, "Syntax highlight the output", "color", 'c');
parser.add_option(g_only_contents, "Only display markup and text", "only-contents", 'o');
parser.add_option(run_tests, "Run tests", "run-tests", 't');
parser.add_positional_argument(filename, "File to read from", "file");
parser.parse(arguments);
s_path = TRY(FileSystem::real_path(filename));
auto file = TRY(Core::File::open(s_path, Core::File::OpenMode::Read));
auto contents = TRY(file->read_until_eof());
auto xml_parser = parse(contents);
auto result = xml_parser.parse();
if (result.is_error()) {
if (xml_parser.parse_error_causes().is_empty()) {
warnln("{}", result.error());
} else {
warnln("{}; caused by:", result.error());
for (auto const& cause : xml_parser.parse_error_causes())
warnln(" {}", cause);
}
return 1;
}
auto doc = result.release_value();
if (run_tests) {
do_run_tests(doc);
size_t passed = 0;
size_t failed = 0;
size_t runner_error = 0;
size_t total = 0;
for (auto& entry : s_test_results) {
total++;
switch (entry.value) {
case TestResult::Passed:
passed++;
break;
case TestResult::Failed:
failed++;
break;
case TestResult::RunnerFailed:
runner_error++;
break;
}
}
outln("{} passed, {} failed, {} runner failed of {} tests run.", passed, failed, runner_error, total);
return 0;
}
dump(doc);
if (!g_only_contents)
outln();
return 0;
}