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6e19ab2bbc
We have a new, improved string type coming up in AK (OOM aware, no null state), and while it's going to use UTF-8, the name UTF8String is a mouthful - so let's free up the String name by renaming the existing class. Making the old one have an annoying name will hopefully also help with quick adoption :^)
94 lines
3.5 KiB
C++
94 lines
3.5 KiB
C++
/*
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* Copyright (c) 2021, Ben Wiederhake <BenWiederhake.GitHub@gmx.de>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/HashMap.h>
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#include <AK/StringView.h>
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#include <AK/Vector.h>
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#include <LibCore/File.h>
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// Exit code is bitwise-or of these values:
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static constexpr auto EXIT_COLLISION = 0x1;
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static constexpr auto EXIT_ERROR = 0x2;
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int main(int argc, char** argv)
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{
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if (argc < 3) {
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warnln("Usage: {} path/to/some.ipc path/to/other.ipc [more ipc files ...]", argv[0]);
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return EXIT_ERROR;
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}
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// Read files, compute their hashes, ignore collisions for now.
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HashMap<u32, Vector<DeprecatedString>> inverse_hashes;
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bool had_errors = false;
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for (int file_index = 1; file_index < argc; ++file_index) {
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DeprecatedString filename(argv[file_index]);
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auto file_or_error = Core::File::open(filename, Core::OpenMode::ReadOnly);
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if (file_or_error.is_error()) {
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warnln("Error: Cannot open '{}': {}", filename, file_or_error.error());
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had_errors = true;
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continue; // next file
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}
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auto file = file_or_error.value();
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DeprecatedString endpoint_name;
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while (true) {
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DeprecatedString line = file->read_line();
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if (file->error() != 0 || line.is_null())
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break;
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if (!line.starts_with("endpoint "sv))
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continue;
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auto line_endpoint_name = line.substring("endpoint "sv.length());
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if (!endpoint_name.is_null()) {
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// Note: If there are three or more endpoints defined in a file, these errors will look a bit wonky.
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// However, that's fine, because it shouldn't happen in the first place.
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warnln("Error: Multiple endpoints in file '{}': Found {} and {}", filename, file->error());
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had_errors = true;
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continue; // next line
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}
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endpoint_name = line_endpoint_name;
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}
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if (file->error() != 0) {
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warnln("Error: Failed to read '{}': {}", filename, file->error());
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had_errors = true;
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continue; // next file
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}
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if (endpoint_name.is_null()) {
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// If this happens, this file probably needs to parse the endpoint name more carefully.
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warnln("Error: Could not detect endpoint name in file '{}'", filename);
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had_errors = true;
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continue; // next file
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}
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u32 hash = endpoint_name.hash();
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auto& files_with_hash = inverse_hashes.ensure(hash);
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files_with_hash.append(filename);
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}
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// Report any collisions
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bool had_collisions = false;
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for (auto const& specific_collisions : inverse_hashes) {
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if (specific_collisions.value.size() <= 1)
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continue;
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outln("Collision: Multiple endpoints use the magic number {}:", specific_collisions.key);
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for (auto const& colliding_file : specific_collisions.value) {
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outln("- {}", colliding_file);
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}
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had_collisions = true;
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}
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outln("Checked {} files, saw {} distinct magic numbers.", argc - 1, inverse_hashes.size());
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if (had_collisions)
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outln("Consider giving your new service a different name.");
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if (had_errors)
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warnln("Some errors were encountered. There may be endpoints with colliding magic numbers.");
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int exit_code = 0;
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if (had_collisions)
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exit_code |= EXIT_COLLISION;
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if (had_errors)
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exit_code |= EXIT_ERROR;
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return exit_code;
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}
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