131 lines
4.2 KiB
C++
131 lines
4.2 KiB
C++
#include <luna/PathParser.h>
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#include <luna/String.h>
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#include <os/ArgumentParser.h>
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#include <os/Directory.h>
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#include <os/File.h>
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#include <os/FileSystem.h>
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#include <os/Prompt.h>
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using os::File;
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Result<void> copy_file(StringView source, StringView destination, bool verbose, bool interactive)
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{
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SharedPtr<File> source_file = TRY(os::File::open(source, File::ReadOnly));
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SharedPtr<File> destination_file;
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struct stat st;
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TRY(os::FileSystem::stat(source_file->fd(), st, true));
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umask(0);
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if (st.st_mode & S_IFDIR)
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{
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os::eprintln("cp: warning: -R not specified, skipping directory %s", source.chars());
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return {};
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}
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String path;
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if (os::FileSystem::is_directory(destination, true))
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{
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auto basename = TRY(PathParser::basename(source));
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path = TRY(PathParser::join_paths(destination, basename.view()));
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if (interactive && os::FileSystem::exists(path.view(), false))
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{
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auto prompt = TRY(String::format("cp: Overwrite %s with %s?"_sv, path.chars(), source.chars()));
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if (!os::conditional_prompt(prompt.view(), os::DefaultNo)) return {};
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}
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destination_file = TRY(File::open_or_create(path.view(), File::ReadWrite, st.st_mode & ~S_IFMT));
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}
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else
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{
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path = TRY(String::from_string_view(destination));
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if (interactive && os::FileSystem::exists(path.view(), false))
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{
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auto prompt = TRY(String::format("cp: Overwrite %s with %s?"_sv, path.chars(), source.chars()));
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if (!os::conditional_prompt(prompt.view(), os::DefaultNo)) return {};
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}
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destination_file = TRY(File::open_or_create(path.view(), File::ReadWrite, st.st_mode & ~S_IFMT));
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}
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if (verbose) os::eprintln("copying %s to %s", source.chars(), path.chars());
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auto buf = TRY(Buffer::create_sized(4096));
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while (1)
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{
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TRY(source_file->read(buf, 4096));
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if (buf.is_empty()) break;
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destination_file->write(buf);
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}
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return {};
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}
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Result<void> copy_tree(StringView source, StringView destination, bool verbose, bool interactive)
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{
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String path;
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if (!os::FileSystem::is_directory(source, true)) return copy_file(source, destination, verbose, interactive);
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if (os::FileSystem::is_directory(destination, true))
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{
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auto basename = TRY(PathParser::basename(source));
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path = TRY(PathParser::join_paths(destination, basename.view()));
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if (!os::FileSystem::exists(path.view(), false)) TRY(os::FileSystem::create_directory(path.view(), 0755));
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}
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else
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{
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path = TRY(String::from_string_view(destination));
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if (!os::FileSystem::exists(path.view(), false)) TRY(os::FileSystem::create_directory(path.view(), 0755));
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else
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{
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os::eprintln("cp: cannot overwrite non-directory '%s' with directory '%s'", path.chars(), source.chars());
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return {};
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}
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}
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auto dir = TRY(os::Directory::open(source));
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Vector<String> entries = TRY(dir->list_names(os::Directory::Filter::ParentAndBase));
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for (const auto& entry : entries)
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{
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auto subpath = TRY(PathParser::join_paths(source, entry.view()));
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TRY(copy_tree(subpath.view(), path.view(), verbose, interactive));
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}
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return {};
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}
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Result<int> luna_main(int argc, char** argv)
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{
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Vector<StringView> files;
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StringView destination;
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bool verbose { false };
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bool interactive { false };
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bool recursive { false };
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os::ArgumentParser parser;
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parser.add_description("Copy files or directories."_sv);
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parser.add_system_program_info("cp"_sv);
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parser.set_vector_argument(files, "files"_sv, true);
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parser.add_positional_argument(destination, "destination"_sv, true);
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parser.add_switch_argument(verbose, 'v', "verbose"_sv, "show more information"_sv);
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parser.add_switch_argument(interactive, 'i', "interactive"_sv, "prompt before overwriting existing files"_sv);
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parser.add_switch_argument(recursive, 'R', "recursive"_sv, "copy directories recursively"_sv);
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TRY(parser.parse(argc, argv));
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for (const auto& file : files)
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{
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if (recursive) TRY(copy_tree(file, destination, verbose, interactive));
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else
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TRY(copy_file(file, destination, verbose, interactive));
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}
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return 0;
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}
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