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errno: Port to LibMain

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This commit is contained in:
Kenneth Myhra 2021-12-21 19:08:23 +01:00 committed by Andreas Kling
parent 2e0f53c25d
commit 8aafe6cd1f
Notes: sideshowbarker 2024-07-17 21:51:30 +09:00 
Author: https://github.com/kennethmyhra
Commit: https://github.com/SerenityOS/serenity/commit/8aafe6cd1fc
Pull-request: https://github.com/SerenityOS/serenity/pull/11415
2 changed files with 8 additions and 6 deletions
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1
Userland/Utilities/CMakeLists.txt
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@ -88,6 +88,7 @@ target_link_libraries(dmesg LibMain)
target_link_libraries(du LibMain)
target_link_libraries(echo LibMain)
target_link_libraries(env LibMain)
target_link_libraries(errno LibMain)
target_link_libraries(expr LibRegex LibMain)
target_link_libraries(fdtdump LibDeviceTree LibMain)
target_link_libraries(file LibGfx LibIPC LibCompress LibMain)

13
Userland/Utilities/errno.cpp
View File

@ -5,19 +5,20 @@
*/
#include <LibCore/ArgsParser.h>
#include <LibMain/Main.h>
#include <string.h>
int main(int argc, char** argv)
ErrorOr<int> serenity_main(Main::Arguments arguments)
{
bool list = false;
bool search = false;
const char* keyword = nullptr;
StringView keyword;
Core::ArgsParser args_parser;
args_parser.add_positional_argument(keyword, "Error number or string to search", "keyword", Core::ArgsParser::Required::No);
args_parser.add_option(list, "List all errno values", "list", 'l');
args_parser.add_option(search, "Search for error descriptions containing keyword", "search", 's');
args_parser.parse(argc, argv);
args_parser.parse(arguments);
if (list) {
for (int i = 0; i < sys_nerr; i++) {
@ -26,7 +27,7 @@ int main(int argc, char** argv)
return 0;
}
if (keyword == nullptr)
if (keyword.is_empty())
return 0;
if (search) {
@ -39,14 +40,14 @@ int main(int argc, char** argv)
return 0;
}
auto maybe_errno = StringView { keyword }.to_int();
auto maybe_errno = keyword.to_int();
if (!maybe_errno.has_value()) {
warnln("ERROR: Not understood: {}", keyword);
return 1;
}
auto error = String::formatted("{}", strerror(maybe_errno.value()));
if (error == "Unknown error") {
if (error == "Unknown error"sv) {
warnln("ERROR: Unknown errno: {}", keyword);
return 1;
}