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pape: Improve error handling during option handling and bitmap loading

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Improper options now return with an error, and bitmap loading is now
`TRY` instead of `MUST`
This commit is contained in:
James Puleo 2022-02-13 13:06:34 -05:00 • committed by Ali Mohammad Pur
parent e4c182d855
commit f7f14d52e0
1 changed files with 46 additions and 68 deletions
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114
Userland/Utilities/pape.cpp
View file

@ -14,86 +14,64 @@
#include <LibGUI/Desktop.h>
#include <LibMain/Main.h>
static int handle_show_all()
{
Core::DirIterator di("/res/wallpapers", Core::DirIterator::SkipDots);
if (di.has_error()) {
warnln("DirIterator: {}", di.error_string());
return 1;
}
while (di.has_next()) {
String name = di.next_path();
outln("{}", name);
}
return 0;
}
static int handle_show_current()
{
outln("{}", GUI::Desktop::the().wallpaper_path());
return 0;
}
static int handle_set_pape(const String& name)
{
StringBuilder builder;
builder.append("/res/wallpapers/");
builder.append(name);
String path = builder.to_string();
if (!GUI::Desktop::the().set_wallpaper(MUST(Gfx::Bitmap::try_load_from_file(path)), path)) {
warnln("pape: Failed to set wallpaper {}", path);
return 1;
}
return 0;
};
static int handle_set_random()
{
Vector<String> wallpapers;
Core::DirIterator di("/res/wallpapers", Core::DirIterator::SkipDots);
if (di.has_error()) {
warnln("DirIterator: {}", di.error_string());
return 1;
}
while (di.has_next()) {
wallpapers.append(di.next_full_path());
}
wallpapers.remove_all_matching([](const String& wallpaper) { return wallpaper == GUI::Desktop::the().wallpaper_path(); });
if (wallpapers.is_empty()) {
warnln("pape: No wallpapers found");
return 1;
}
auto& wallpaper = wallpapers.at(get_random_uniform(wallpapers.size()));
if (!GUI::Desktop::the().set_wallpaper(MUST(Gfx::Bitmap::try_load_from_file(wallpaper)), wallpaper)) {
warnln("pape: Failed to set wallpaper {}", wallpaper);
return 1;
}
return 0;
}
ErrorOr<int> serenity_main(Main::Arguments arguments)
{
bool show_all = false;
bool show_current = false;
bool set_random = false;
const char* name = nullptr;
String path;
Core::ArgsParser args_parser;
args_parser.add_option(show_all, "Show all wallpapers", "show-all", 'a');
args_parser.add_option(show_current, "Show current wallpaper", "show-current", 'c');
args_parser.add_option(set_random, "Set random wallpaper", "set-random", 'r');
args_parser.add_positional_argument(name, "Wallpaper to set", "name", Core::ArgsParser::Required::No);
args_parser.add_positional_argument(path, "Wallpaper to set", "path", Core::ArgsParser::Required::No);
args_parser.parse(arguments);
auto app = TRY(GUI::Application::try_create(arguments));
auto app = GUI::Application::construct(arguments);
if (show_all)
return handle_show_all();
else if (show_current)
return handle_show_current();
else if (set_random)
return handle_set_random();
if (show_all) {
Core::DirIterator wallpapers_directory_iterator("/res/wallpapers", Core::DirIterator::SkipDots);
if (wallpapers_directory_iterator.has_error())
return Error::from_string_literal("Unable to iterate /res/wallpapers directory");
return handle_set_pape(name);
while (wallpapers_directory_iterator.has_next()) {
auto name = wallpapers_directory_iterator.next_path();
outln("{}", name);
}
} else if (show_current) {
auto current_wallpaper_path = GUI::Desktop::the().wallpaper_path();
outln("{}", current_wallpaper_path);
} else if (set_random) {
Core::DirIterator wallpapers_directory_iterator("/res/wallpapers", Core::DirIterator::SkipDots);
if (wallpapers_directory_iterator.has_error())
return Error::from_string_literal("Unable to iterate /res/wallpapers directory");
Vector<String> wallpaper_paths;
auto current_wallpaper_path = GUI::Desktop::the().wallpaper_path();
while (wallpapers_directory_iterator.has_next()) {
auto next_full_path = wallpapers_directory_iterator.next_full_path();
if (next_full_path != current_wallpaper_path)
wallpaper_paths.append(move(next_full_path));
}
if (wallpaper_paths.is_empty())
return Error::from_string_literal("No wallpapers found");
auto& chosen_wallpaper_path = wallpaper_paths.at(get_random_uniform(wallpaper_paths.size()));
auto chosen_wallpaper_bitmap = TRY(Gfx::Bitmap::try_load_from_file(chosen_wallpaper_path));
if (!GUI::Desktop::the().set_wallpaper(chosen_wallpaper_bitmap, chosen_wallpaper_path))
return Error::from_string_literal("Failed to set wallpaper");
outln("Set wallpaper to {}", chosen_wallpaper_path);
} else {
if (path.is_null())
return Error::from_string_literal("Must provide a path to a wallpaper");
auto wallpaper_bitmap = TRY(Gfx::Bitmap::try_load_from_file(path));
if (!GUI::Desktop::the().set_wallpaper(wallpaper_bitmap, path))
return Error::from_string_literal("Failed to set wallpaper");
}
return 0;
}