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Why are command-line utilities stored in "apps"? And why are apps like "editor" or "terminal" top-level directories? Command-line utilities now go in "utils". GUI stuff now goes in "gui". This includes: libui -> gui/libui, wind -> gui/wind, GUI apps -> gui/apps, editor&terminal -> gui/apps... System services go in "system".
42 lines
1.2 KiB
C++
42 lines
1.2 KiB
C++
#include <luna/String.h>
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#include <os/ArgumentParser.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<int> luna_main(int argc, char** argv)
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{
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StringView pathname;
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os::ArgumentParser parser;
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parser.add_description("Edit a file using basic line-based shell editing."_sv);
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parser.add_system_program_info("edit"_sv);
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parser.add_positional_argument(pathname, "path"_sv, true);
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parser.parse(argc, argv);
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if (os::FileSystem::exists(pathname))
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{
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String prompt = TRY(String::format("File %s already exists. Overwrite?"_sv, pathname.chars()));
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bool overwrite = os::conditional_prompt(prompt.chars(), os::DefaultNo);
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if (!overwrite) return 0;
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}
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auto file = TRY(File::open_or_create(pathname, File::WriteOnly));
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auto input = File::standard_input();
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os::println("- Editing %s. Press Enter to start a new line, or Ctrl+D at the start of a line to save and exit. -",
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pathname.chars());
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while (1)
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{
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String line = TRY(input->read_line());
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if (line.is_empty()) break;
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TRY(file->write(line.view()));
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}
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return 0;
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}
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