mirror of
https://github.com/RGBCube/serenity
synced 2025-10-31 20:32:44 +00:00
ed4c2f2f8e
This generally seems like a better name, especially if we somehow also need a better name for "read the entire buffer, but not the entire file" somewhere down the line.
75 lines
2.4 KiB
C++
75 lines
2.4 KiB
C++
/*
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* Copyright (c) 2021, Mustafa Quraish <mustafa@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibCore/ArgsParser.h>
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#include <LibCore/Stream.h>
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#include <LibCore/System.h>
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#include <LibDiff/Generator.h>
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#include <LibMain/Main.h>
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#include <unistd.h>
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ErrorOr<int> serenity_main(Main::Arguments arguments)
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{
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TRY(Core::System::pledge("stdio rpath"));
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Core::ArgsParser parser;
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DeprecatedString filename1;
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DeprecatedString filename2;
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parser.add_positional_argument(filename1, "First file to compare", "file1", Core::ArgsParser::Required::Yes);
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parser.add_positional_argument(filename2, "Second file to compare", "file2", Core::ArgsParser::Required::Yes);
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parser.parse(arguments);
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auto file1 = TRY(Core::Stream::File::open(filename1, Core::Stream::OpenMode::Read));
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auto file2 = TRY(Core::Stream::File::open(filename2, Core::Stream::OpenMode::Read));
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bool color_output = TRY(Core::System::isatty(STDOUT_FILENO));
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auto hunks = Diff::from_text(TRY(file1->read_until_eof()), TRY(file2->read_until_eof()));
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for (auto const& hunk : hunks) {
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auto original_start = hunk.original_start_line;
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auto target_start = hunk.target_start_line;
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auto num_added = hunk.added_lines.size();
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auto num_removed = hunk.removed_lines.size();
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StringBuilder sb;
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// Source line(s)
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sb.appendff("{}", original_start);
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if (num_removed > 1)
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sb.appendff(",{}", original_start + num_removed - 1);
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// Action
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if (num_added > 0 && num_removed > 0)
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sb.append('c');
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else if (num_added > 0)
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sb.append('a');
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else
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sb.append('d');
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// Target line(s)
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sb.appendff("{}", target_start);
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if (num_added > 1)
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sb.appendff(",{}", target_start + num_added - 1);
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outln("Hunk: {}", sb.build());
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for (auto const& line : hunk.removed_lines) {
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if (color_output)
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outln("\033[31;1m< {}\033[0m", line);
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else
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outln("< {}", line);
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}
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if (num_added > 0 && num_removed > 0)
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outln("---");
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for (auto const& line : hunk.added_lines) {
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if (color_output)
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outln("\033[32;1m> {}\033[0m", line);
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else
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outln("> {}", line);
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}
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}
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return hunks.is_empty() ? 0 : 1;
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}
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